JP2011077379A - Heat absorption and radiation system for solar cell panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat absorption and radiation system for a solar cell panel, capable of preventing degradation of the power generating efficiency caused by a rise in the temperature of the cell by cooling the solar cell panel, during a season where there is a large amount of solar radiation and temperature is high, without using a heat source which consumes a large quantity of power, such as a heat pump and a boiler, and using a simple construction, and allowing incidence of sunlight all the time into the solar cell panel, by heating the solar cell panel to melt deposited snow during a low-temperature season and a season of snowfall, moreover, restraining the temperature from changing with the passage of time, in a state without unevenness in the temperature distribution of the entire solar cell panel, and significantly increasing the electric power generation efficiency of solar power generation and stability of the electric power. <P>SOLUTION: The system includes a heat source pipe, a header pipe in which the heat source pipe is attached or inserted and a plurality of heat pipe branch pipes branched from the header pipe. A heat transfer plate is arranged on an upper surface of the heat pipe, and the solar cell panel is arranged on an upper surface of the heat transfer plate. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention prevents a decrease in power generation efficiency due to a rise in the temperature of a solar cell panel in a solar power generation device, and also prevents snow incident on the solar cell panel from being melted by melting snow accumulated on the solar cell panel. The present invention relates to a solar cell panel heat absorption / dissipation system in which power generation efficiency is remarkably improved.

In recent years, solar power generation that does not generate greenhouse gases during power generation and that can regenerate most of the constituent materials has attracted attention due to greenhouse gases and energy problems in the global environment. Sunlight itself is a semi-permanent energy resource, and solar power generation using this has a great social role, and demand is growing.
Conventionally, in a solar power generation device, a solar cell mainly composed of single crystal or polycrystalline silicon or a solar cell mainly composed of amorphous silicon (hereinafter abbreviated as a cell) has been used. However, the electromotive force of these cells varies depending on the cell base material, but generally has a drawback that the power generation efficiency decreases (thermal runaway) as the cell temperature increases. Due to this drawback, when the amount of solar radiation on the solar cell panel is large, the cell temperature rises and the power generation efficiency decreases, and it is difficult to always keep the power generation efficiency at the maximum.
In addition to the problem of reduced power generation efficiency due to the rise in cell temperature, the solar panel is snowed or the surface of the solar panel is frozen, especially in cold regions, and sunlight is blocked or the amount of incident sunlight is reduced. As a result, there is a problem that the amount of power generation becomes scarce. In addition, the work to remove snow and freezing on the solar panel may damage the solar panel, which is actually difficult, and the work itself is dangerous in a solar power generation system grounded at a high place. It was highly probable.
In order to solve these problems, (Patent Document 1) discloses a water-cooled solar cell panel in which the solar cell panel is installed on the surface of the sea, a lake, a marsh, or the like.
(Patent Document 2) discloses a photovoltaic power generation apparatus including a heat exchanger joined to a solar cell array, a pump that circulates a heat exchange medium in the heat exchanger, and a cooler that cools the heat exchange medium. Has been.
(Patent Document 3) includes a solar cell module, a heat collecting tube, an upper header tube for collecting and distributing a heat medium of the heat collecting tube, a low-temperature heat storage tank connected to the upper and lower header tubes, and the low temperature There is disclosed a roof snow-melting solar energy collecting device constituted by an auxiliary boiler connected to a heat storage tank.
(Patent Document 4) includes a solar cell panel, air blowing means for allowing air to flow through the solar cell panel, a heat pump circuit having a variable capacity compressor, and heat exchange with air that has passed through the solar cell panel. The solar heat utilization apparatus provided with the evaporator of the said heat pump circuit and the compression functional force variable control means is disclosed.

Japanese Utility Model Publication No.59-109161 JP-A-4-127582 JP-A-8-94189 JP 2003-50056

However, the above conventional technique has the following problems.
In (1) (Patent Document 1), there are problems that temperature spots are likely to occur, cooling capacity is weak, and snow melting is difficult.
In (2) (Patent Document 2), it is not possible to melt the snow that has accumulated on the solar panel simply by cooling the solar cell array with the heat medium whose temperature is adjusted by the cooler, and a large amount of power is required for the operation of the cooler. There is a problem that the photovoltaic power generation efficiency is reduced by the amount of power consumption.
(3) (Patent Document 3) has a problem that a heat pump is used or a boiler is used as an auxiliary heat source, so that a large amount of power is consumed and the photovoltaic power generation efficiency is reduced by the amount of power consumption. In addition, when the snow melts, the solar panel must be heated while suppressing an excessive temperature rise of the solar panel, and in that case, it is necessary to operate the heat pump in addition to the daytime, The problem is that if it is going to melt snow only during power generation during the day, it has to be set at a considerably high temperature, so that the power generation efficiency is lowered and eventually unsuitable for snow melting.
(4) In (Patent Document 4), since a heat pump is used as in (Patent Document 3), there is a problem that power is consumed and the photovoltaic power generation efficiency is reduced by the amount of the consumed power. In addition, since only the solar cell panel can be cooled, there is a problem that it cannot cope with a decrease in the amount of incident sunlight due to snow melting or freezing.

In these prior arts, it is difficult to make the temperature distribution of the entire solar panel uniform, and the power generation efficiency is different in each cell due to the generated temperature distribution spots, and it is equipped with a temperature adjustment mechanism by heat pump capacity control. However, there was a problem that it was difficult to set the optimum temperature. In addition, there is a problem that the power generation efficiency itself is not stable due to unevenness in the temperature distribution of the entire solar cell panel and unevenness in power generation efficiency due to the temperature change over time.
As a system for keeping the temperature of the solar battery panel of the solar power generation device constant, (a) the generated power is consumed in large quantities by using a heat pump, a boiler, etc., and the power generation efficiency is not lowered. When the panel is heated excessively by sunlight, it can be cooled, and when it snows, it can melt snow, preventing power generation efficiency from being reduced by heat and blocking sunlight, and (c) Temperature distribution of the entire solar panel The most ideal is that there are no spots, (d) the temperature change of the solar cell panel is stable over time, the power is stable over time, and (e) is easy to install. It is.
However, there is no such ideal in the prior art, and any system is not fully satisfactory in the end, and there is a strong demand for these improvements.

  The present invention satisfies the above-mentioned demands and further solves the above-mentioned problems, without using a heat source that consumes a large amount of power such as a heat pump or a boiler, and with a simple construction and a high solar radiation amount and a high temperature season In addition, the solar panel is cooled to prevent a decrease in power generation efficiency due to a rise in cell temperature, and solar heat is stored in the ground with heat pipes. The snow is then melted to ensure that sunlight is always incident on the solar panel, while preventing damage caused by snow accumulation, greatly reducing snow removal work, and maintaining the temperature distribution of the entire solar panel without any unevenness. The purpose of the present invention is to provide a solar cell panel heat sink / heat dissipating system that can keep the power generation constant and can significantly improve the power generation efficiency of solar power generation and the stability of power during power generation. That.

In order to solve the above-described problems, the solar cell panel heat absorbing / dissipating system of the present invention has the following configuration.
The solar cell panel heat absorbing / dissipating system according to claim 1 is a solar cell panel absorbing / dissipating system in which a heat pipe is disposed below or above a back cover of the solar cell panel, wherein the heat pipe is (a). A heat source pipe; (b) a header pipe in which the heat source pipe is disposed or provided; and (c) a plurality of heat pipe branch pipes branched from the header pipe.

With this configuration, the following operation can be obtained.
(1) When a heat medium is passed through the heat source pipe and the heat is transferred to the header pipe, the working fluid in the header pipe evaporates and absorbs a large amount of latent heat of evaporation from the heat source pipe. Condensation releases heat of condensation, and heat is transferred from the header pipe to the heat pipe branch pipe in a short time by the pressure gradient of the steam generated between the header pipe and each of the heat pipe branch pipe. The temperature difference from the heat pipe branch pipe can be almost eliminated.
(2) Since a plurality of heat pipe branch pipes are branched from the header pipe so as to cover the solar cell panel surface widely, even if the header pipe length is short, the wide area of the solar cell panel can be extended to the heat pipe branch pipe Because it can absorb and dissipate heat, the header tube can be shortened. For this reason, the length of the heat source tube penetrating or attached to the header tube can be shortened, the path of the heat source tube disposed in the solar cell panel is shortened, and the tube friction resistance is reduced. The pump to be sent needs only a small output, and the pump can be driven with little energy, so the running cost can be reduced, and the power consumption of the pump is extremely low. There is very little.
(3) Even if the solar cell panel is exposed to strong sunlight for a long time, the generated heat is transferred to the heat pipe arranged at the lower part of the solar cell panel, and then the heat pipe is transferred from the branch pipe to the header pipe. Heat is transferred so rapidly that there is no temperature difference between the pipe branch pipe and header pipe, and further, the heat is transferred to the heat medium in the heat source pipe, so the temperature of the entire solar panel is made uniform at a low temperature, and the power generation efficiency decreases due to thermal runaway Can be prevented.
(4) Even when snow accumulates on the solar cell panel, the heat of the heat medium in the heat source pipe is transferred to the header pipe, and the heat of the header pipe is so rapid that there is no temperature difference between the heat pipe branch pipe and the header pipe. Since the entire solar cell panel is heated from the heat pipe, the snow piled up on the solar cell panel can be melted and the incident sunlight is not blocked by the snow.
(5) Since the temperature variation of the entire solar cell panel can be eliminated, the temperature state of the solar cell panel can be correctly grasped, and the optimum temperature at the time of temperature adjustment can be easily set, and the power stability is excellent.
(6) When geothermal heat is used as the heat source, the heat of the solar panel in the summer is transferred to the heat medium in the heat source tube and stored as geothermal heat in the heat source. It can be used and consumes a minimum amount of energy to drive a pump that circulates the heat medium throughout the year, so that power generation efficiency can be maximized.
(7) The heat pipe can be placed directly on the upper part of the back cover (lower part of the cell) inside the solar panel, so it can exchange heat directly with the cell and significantly suppresses heat loss and temperature spots during heat absorption and release. In addition, the power generation efficiency of the entire solar cell panel can be stabilized, and the power generation efficiency over time can also be stabilized.
(8) When the heat pipe is arranged on the upper part of the back cover, the cooling energy needs to be the minimum necessary to adjust the cell temperature. The power generation efficiency can be maximized.
(9) When the heat pipe is disposed inside the solar cell panel, the thermal deterioration of the filler can be remarkably suppressed, and the durability of the solar cell panel can be improved.

  Here, as the heat pipe, a heat pipe branch pipe arranged on one side of a plurality of heat pipe branch pipes arranged substantially in parallel, a heat pipe branch pipe arranged on the left and right around the header pipe portion, heat It is possible to use a pipe having header pipes disposed on both sides of a pipe branch pipe.

  The header pipe and heat pipe branch pipe are made of copper, stainless steel, aluminum, magnesium, titanium, brass, silver, gold, or other metal, polycarbonate, ABS, polysulfone, polyetheretherketone, etc. , High-strength synthetic resins such as high-strength polyethylene, or those obtained by filling these synthetic resins with glass fibers, carbon black, carbon fibers, carbon nanotubes, or the like as fillers are used. There is no particular limitation as long as a degree of vacuum of about 1000 to 1/1000000 can be obtained.

In addition, when silicon ore is applied in the form of powder or fine powder on the surface, the heat exchange efficiency can be remarkably improved and the temperature spots of the entire heat pipe can be remarkably improved.
The silicon ore to be used may be a high-purity silicon having a silicon content of 80% or more, or a low-purity one that has been disposed of as a conventional powder or fine powder. Even a low-purity product can exhibit performance comparable to that of a high-purity product, so if a low-purity product is used, a heat pipe with excellent thermodynamic properties that can recycle waste materials at low cost can be obtained. it can. The coating amount of the silicon ore powder and fine powder is preferably 0.01% by weight to 30% by weight with respect to the total mass of the heat pipe.

  Pure, ammonia, carbonic acid, liquid nitrogen, mercury, alcohol, acetone, hydrogen peroxide, etc. can be used as the working fluid enclosed in the heat pipe branch pipe or header pipe, but HCFC-141b and 142b A non-freezing material such as HCFC solvent, HFC134a, etc., which does not freeze up to around −30 ° C. can be used.

  Normally, when the heat pipe is at a position where the heat radiation destination is lower than the high heat source, the heat of the high heat source cannot be transferred to the heat radiation destination. Therefore, the positional relationship of the heat pipes of the heat absorbing / dissipating system is completely different between the case where the temperature of the solar cell panel is lowered and the case where the solar cell panel is heated. However, by providing a wick having a predetermined thickness on all or part of the inner wall of the header pipe or the heat pipe branch pipe, heat exchange can be performed even when the heat radiation destination is lower than the high heat source. As the wick, sintered metal, wire mesh, metal fiber, glass fiber, and many thin grooves are used. By providing a wick, when the high heat source is at a position higher than the heat radiation destination, for example, when heating the solar cell panel, even when the header pipe is at a position higher than the heat pipe branch pipe, the heat pipe branch pipe The working fluid condensed in step (1) is returned to the header pipe using the capillary phenomenon, evaporated again, and sent to the heat pipe branch pipe again, thereby preventing dryout.

However, when the wick is used, the directivity of the heat transfer is lost and the operation is stabilized, but the output as the heat pipe may be weaker than when the wick is not used.
On the other hand, the heat pipe material itself has the ability to transfer heat, so even if the high heat source is located higher than the heat radiation destination, some heat exchange is performed, but metal etc. is used as the heat pipe material. By using it, the heat transfer efficiency from the high heat source at the high position to the heat radiation destination at the low position can be improved. In addition, if the surface of the heat pipe is coated with silicon ore powder or fine powder, the heat transfer efficiency can be remarkably improved, taking heat from a high heat source at a high position and releasing the heat to a heat sink at a low position. it can.

  Therefore, even when wicks are not used, heat can be absorbed in addition to heating the solar panel by using metal as the material of the heat pipe or by applying silicon ore powder or fine powder on the surface of the heat pipe. .

  Further, the heat pipe branch pipes can be arranged in parallel or non-parallel.

  In order to increase the heat transfer area to the solar cell panel, the header pipe and heat pipe branch pipe have a substantially rectangular shape and a substantially rectangular cross section perpendicular to the longitudinal direction of the header pipe and heat pipe branch pipe so that the upper surface is flat. It is preferable to form in a shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape. In addition, when using a header tube or heat pipe branch pipe with a substantially circular cross section, if a flat plate is fixed to the upper surface by welding or the like, as with the case of using a header pipe or heat pipe branch pipe with a flat upper surface, The heat transfer area to the battery panel can be expanded.

  The header pipe and the heat pipe branch pipe may be directly arranged at the lower part of the back cover of the solar cell panel, or may be arranged at intervals. When arranged with a space, an air layer is formed between the header tube or the heat pipe branch tube and the back cover, and the heat layer uniformly distributes the heat pipe heat to the entire solar panel. It becomes easy to be transmitted. However, when an air layer is formed, heat exchange with the heat pipe is hindered by the low heat transfer property of the air layer when the solar cell panel is cooled, but a heat transfer member is interposed between the heat pipe and the solar cell panel. If arranged, the heat of the solar cell panel can be absorbed. The heat transfer member is made of the same material as the heat transfer plate, the heat dispersion member described later, and the like, has a large heat transfer coefficient, and has a pillar shape such as a substantially rectangular shape or a square bar shape.

  In addition, by applying silicon ore powder and fine powder applied to the heat pipe to the back surface of the solar cell panel, the far infrared wavelength emitted by the solar cell panel and the far infrared wavelength absorbed by the heat pipe In agreement with this, an endothermic effect can be obtained even if an air layer is formed. If the wavelength of the far infrared ray emitted from the solar cell panel and the wavelength of the far infrared ray absorbed by the heat pipe match or approximate, a substance other than silicon ore can be applied. For example, a known far-infrared radiation paint can be used.

  Further, the heat pipe can be arranged inside the solar cell panel by arranging the heat pipe at the upper part of the back cover. In this case, since the heat pipe is provided at the lower part of the cell, the heat transfer with the cell is remarkably improved.

  As a material of the heat source tube, copper, stainless steel, aluminum, magnesium, titanium, or other metal, or synthetic resin such as polyethylene, polypropylene, ABS, polycarbonate, polysulfone, or polyetheretherketone is used.

  Well water, hot spring water, ground water, etc. that are heated by geothermal heat and maintained at a substantially constant water temperature throughout the year can be used as the heat medium that is introduced into the heat source pipe and heats the header pipe. Moreover, river water, waste water from factories and households, and tap water can also be used. Moreover, the antifreeze liquid etc. which were heated by geothermal heat, drainage, etc. can be used.

By introducing a heat medium using waste heat such as underground heat or wastewater into the heat source pipe, a heat source such as a boiler or a heat pump that heats the heat medium becomes unnecessary, reducing running costs and power consumption. And the efficiency of solar power generation can be improved.
The heat source pipe penetrates or is arranged in the header pipe, but is preferably penetrated. When the heat source pipe is penetrated through the header pipe, the heat of the heat medium is transferred to the working fluid of the heat pipe through the wall surface of the heat source pipe, but when the heat source pipe is arranged in the header pipe, the wall surface of the heat source pipe This is because heat is transferred to the working fluid of the heat pipe through the wall surface of the header pipe and some heat loss occurs.

The solar cell panel heat sink / heat dissipating system of the present invention can be introduced into a solar power generation system provided on a roof of a general house. In addition, it can be installed in a huge solar power generation system such as a solar power generation facility, and does not require a heat source such as a heat pump or a boiler, so it may consume energy such as electric power and reduce power generation efficiency. There is no. Moreover, it can respond also to a sunlight tracking type photovoltaic power generation system by using piping or a flexible tube which can deform | transform elastic materials, such as rubber | gum, for the heat source tube of a movable part.
Also, heat pumps and boilers can be used as an auxiliary heat source when there is a limit to temperature control with only underground heat, such as areas where the amount of solar radiation is high throughout the year and the temperature is high, or where ice and snow are closed throughout the year. There is a way to do it. Even in this case, since geothermal heat is used, the consumption of energy such as fuel can be significantly reduced as compared with the case where the temperature of the solar cell panel is adjusted only by a heat pump or a boiler.

  In JIS C 8918, solar cell panels are classified into three types: (α) filled type (β) super straight type (γ) substrate type, and each structure has a back cover, filler, cell, interface. It has a connector and a front cover, and has obtained mechanical strength from the module board. However, in the filling type, the front cover (glass plate) and the back cover also serve as the module substrate. In the super straight type, the front cover serves as the module substrate. In the substrate type, the back cover serves as the module substrate. Has gained strength.

  For the back cover, synthetic resin with excellent corrosion resistance, weather resistance, mechanical properties such as polyvinyl fluoride, and high thermal conductivity such as glass epoxy resin and aluminum plate, and excellent mechanical strength can be obtained. Resin, metal plate, etc. are used. Transparent resin such as ethylene vinyl acetate is used for the filler, and the front cover is excellent in mechanical strength such as white plate tempered glass, and further is light transmissive such as glass plate that does not scatter when broken or polyvinyl fluoride And a resin excellent in weather resistance.

The solar cell panel heat sink / heat dissipating system of the present invention can be directly or indirectly attached to the lower part (back surface) of the back cover common to all the structures of these solar cell panels via a heat transfer plate or a heat transfer member. .
When the solar panel is exposed to sunlight, the front cover, the filler, and the back cover are heated and the cell becomes hot, and the cell runs out of heat and the power generation efficiency decreases. The solar panel absorption and heat dissipation system of the present invention transfers the heat of the cell, front cover, filler, and back cover to the heat pipe through the back cover, and reduces the temperature of the solar panel to suppress thermal runaway. Improve power generation efficiency. In the event of snow accumulation, heat from the heat pipe is transmitted to the front cover through the back cover, and the snow accumulated on the top of the front cover is melted.

  The solar cell panel is framed by a frame made of rubber, metal, or the like. However, a metal plate with excellent heat transfer efficiency is disposed on the bottom or outer periphery (at least the bottom and side surfaces) of the solar cell panel, or the solar cell panel. It is also possible to increase the heat exchange efficiency between the solar cell panel and the heat pipe by using a material having good heat transfer efficiency such as metal for the frame itself.

The solar cell panel heat sink / heat dissipating system according to claim 2 is a solar cell panel heat sink / heat dissipating system in which a heat pipe plate is disposed below or above the back cover of the solar cell panel, wherein the heat pipe plate is (A) a flat plate in which a groove is formed; (b) a closing plate that closes the groove to form a cavity; and (c) a working fluid sealed in the cavity; and (d) the heat pipe. The plate has a structure in which a heat source tube is disposed or penetrated.
With this configuration, the following operation can be obtained.
(1) By forming a heat pipe into a plate shape and using the heat pipe plate, if a part of the heat pipe plate is heated and cooled, the entire heat pipe plate is rapidly heated and cooled, so that the solar cell The entire panel can be heated and cooled instantly, the snow piled up on the solar panel can be melted to prevent the incidence of sunlight and sufficient power can be generated during the day, and the cell can be cooled. Thus, it is possible to prevent thermal runaway of the cell and suppress a decrease in power generation efficiency.
(2) When the heat pipe plate is placed on the upper part of the back cover, the cooling energy needs to be the minimum necessary to adjust the cell temperature. The power generation efficiency can be maximized.
(3) When the heat pipe plate is disposed inside the solar cell panel, the thermal deterioration of the filler can be remarkably suppressed, and the durability of the solar cell panel can be improved.

  The heat pipe plate is a heat pipe formed in a plate shape, and if the heat source pipe is disposed on a part of the heat pipe plate such as the lower portion of the heat pipe plate, the entire heat pipe plate is instantly heated. Here, the flat plate, the blocking plate, the working fluid, and the heat source pipe are the same as those used in the heat pipe according to the first aspect, so that the description thereof is omitted. In addition, the above-described silicon ore powder and fine powder can be applied to the heat pipe plate to improve the thermodynamic characteristics. In addition, by providing a wick in the cavity inside the heat pipe plate as in the case of the heat pipe, it is possible to eliminate the directivity of heat transfer and stabilize the operation.

  The flat grooves can be provided one by one so as to be substantially parallel to each other, or can be formed by meandering one groove.

A solar cell panel heat absorption / dissipation system according to claim 3 is the solar cell panel according to claim 1 or 2, wherein the heat pipe or the heat pipe plate is coated with silicon ore powder or fine powder. have.
With this configuration, in addition to the effects obtained in claims 1 and 2, the following effects can be obtained.
(1) By applying silicon ore powder and fine powder to heat pipes and heat pipe plates, the direction of heat conduction of the heat pipes is lost, and excellent heat exchange capability with the solar cell panel can be exhibited. .

A solar cell panel heat absorbing / dissipating system according to claim 4 is the solar cell panel heat absorbing / dissipating system according to claim 1, wherein a heat transfer plate is disposed above the heat pipe or the heat pipe plate. It has the composition which is.
With this configuration, in addition to the actions obtained in claims 1 to 3, the following actions can be obtained.
(1) The temperature distribution of the entire solar panel can be made uniform and the variation in power generation of each cell inside the solar panel can be remarkably suppressed, and the temperature state of the solar panel can be accurately grasped and optimized. It is easy to set temperature and remarkably excellent in power stability during power generation.
(2) Even if the solar panel is exposed to strong sunlight for a long time, the generated heat is transferred to the heat transfer plate placed under the back cover without any unevenness in the temperature distribution of the entire panel. Heat is quickly transferred from the heat transfer plate to the heat pipe, and then the heat is transferred rapidly from the heat pipe branch pipe to the header pipe so that there is no temperature difference between the heat pipe branch pipe and the header pipe, and the heat medium in the heat source pipe Since the heat is transmitted to the solar cell panel, the temperature of the entire solar cell panel is made uniform at a low temperature, and a decrease in power generation efficiency due to thermal runaway can be prevented.
(3) Even if snow accumulates on the solar cell panel, the heat of the heat medium in the heat source pipe is transferred to the header pipe, and the heat of the header pipe is so rapid that there is no temperature difference between the heat pipe branch pipe and the header pipe. Snow is accumulated on the solar panel because it is transferred to the pipe and then quickly transferred from the heat pipe to the heat transfer plate, and then the heat transfer plate heats the entire solar panel through the back cover with no unevenness in the temperature distribution. The snow can be melted and the incident sunlight is not blocked by the snow.
(4) When a heat pipe is arranged on the upper part of the back cover and a heat transfer plate is arranged on the upper part of the heat pipe, the inside of the solar cell panel can be uniformly heated and cooled. It can prevent thermal runaway and suppress thermal deterioration of the filler, and can further melt snow.
(5) Since the heat transfer plate has the property that the heat given to a part is quickly dispersed throughout, the heat transfer plate is disposed above the heat pipe disposed above the back cover. In this case, the solar cell panel can be uniformly heated and cooled even if the structure of the heat pipe is simplified.

As the heat transfer plate, a metal plate such as copper having a high heat transfer rate or a far infrared radiation plate can be used.
As far-infrared radiation plates, carbon materials such as artificial graphite materials made from petroleum coke, etc., natural minerals such as carbon fiber, barley stone and amatite, carbon materials and natural minerals, carbon fibers and synthetic resin materials Composite, composite materials, etc. that are formed into a plate shape, the surface of these plates, or the surface of plates made of metal, etc., alumina, silica, zirconia, titania, magnesia and their composite oxides, silicon nitride, silicon carbide Such as ceramics such as silicon, carbide, silicon ore powder, coating film containing fine powder, sprayed film or the like can be used. Further, alumina, silica, zirconia, titania, magnesia, composite oxides thereof, ceramics such as silicon nitride and silicon carbide, silicon, and carbides formed in a plate shape can also be used.

The far-infrared radiation plate is excellent in thermal conductivity, and as soon as a part of the far-infrared radiation plate is warmed, heat can be dispersed throughout and radiate far-infrared rays. It is possible to absorb and dissipate heat with no temperature distribution.
The far-infrared radiation plate satisfies the characteristics that the far-infrared emissivity in the infrared absorption wavelength range of 2.5 to 7 μm is 50% or more, the thermal conductivity is 0.2 W / m · K or more, and the specific heat is 2100 J / kg · K or less. Preferably used. This is to develop a good snow melting property. In addition, a far-infrared emissivity is calculated | required by measuring a spectral emissivity. The specific heat is determined by a laser flash method. The thermal conductivity is obtained from the thermal diffusivity, specific heat and far infrared radiation plate density obtained by the laser flash method.
The far-infrared emissivity is particularly preferably 50% or more, preferably 80% or more at the absorption wavelength of water, particularly 2.66 μm, 2.73 μm, and 6.27 μm. This is because the vibration of water molecules is excited by far-infrared rays and snow melting properties increase.
The thermal conductivity is preferably 0.2 W / m · K or more, preferably 0.5 W / m · K or more. The reason is that when the heat conductivity is lower than 0.2 W / m · K, This is because the loss of heat energy supplied from the heat source tube increases, and the snow melting effect by the far-infrared radiation plate decreases.
If the specific heat exceeds 2100 J / kg · K, the far-infrared radiation plate has a large amount of heat storage, and it takes time for heat transfer and the snow melting effect is reduced, which is not preferable.

As a method of disposing the heat transfer plate at the lower part of the back cover, the heat transfer plate may be disposed directly on the entire lower part of the back cover, or an air layer is formed between the heat transfer plate and the back cover. As described above, a heat transfer plate may be disposed on the entire lower portion of the back cover with an interval therebetween. Moreover, you may arrange | position a heat exchanger plate in a part of lower part of a back cover at intervals so that an air layer may be formed between a heat exchanger plate and a solar cell panel.
When the heat transfer plate is placed directly under the back cover, the heat transfer plate directly radiates heat to the solar panel, but when an air layer is formed between the heat transfer plate and the back cover, the heat transfer plate The heat exchange between the plate and the solar cell panel is performed once through an air layer. The heat transfer plate is excellent in heat dissipation to the air, and air has the property of uniformly diffusing heat to the whole, so by combining the heat transfer plate and air, the heat transfer plate is only on a part of the lower part of the back cover. Even if it is disposed, the entire solar cell panel can be sufficiently warmed.

  However, when the solar cell panel absorbs heat, it is difficult to effectively transmit the temperature of the solar cell panel to the heat transfer plate due to the low heat transfer property of the air. A thermal member is disposed to absorb the heat of the solar cell panel. In addition, if a material that emits far-infrared rays having the same or approximate wavelength as that of the far-infrared rays emitted by the heat transfer plate is applied, the far-infrared rays generated due to the heat of the solar cell panel can be efficiently absorbed and the solar cell panel Can reduce the heat. For example, if silicon ore powder or fine powder is applied to the heat transfer plate and the lower part of the solar cell panel, even if the air layer has heat insulation, it effectively absorbs far infrared rays emitted by the solar cell panel. The heat transfer plate can absorb the heat of the entire solar cell panel. Other known far-infrared radiation paints can also be used.

  When a heat transfer plate is disposed on the upper portion of the heat pipe disposed on the upper portion of the back cover, the heat of the cell is transmitted to the heat pipe through the heat transfer plate at one end. Since the heat transfer plate quickly disperses the heat given to a part of the heat transfer plate, the heat transfer efficiency with the heat pipe can be improved, and thus the structure of the heat pipe can be simplified.

The solar cell panel heat absorbing / dissipating system according to claim 5 is the solar cell panel absorbing / dissipating system according to claim 1, wherein the back cover is formed of a heat transfer plate, and the lower portion of the heat transfer plate The heat pipe or the heat pipe plate is arranged.
With this configuration, in addition to the actions obtained in claims 1 to 3, the following actions can be obtained.
(1) By using a heat transfer plate as a back cover, it is possible to heat and cool the solar cell panel without temperature spots, and to improve the power generation efficiency of the solar cell panel and to set the optimum temperature more easily. The power generation efficiency can always be stabilized in the best condition.
(2) By using a heat transfer plate as the back cover, the heat exchange efficiency with the heat pipe is improved, the thermal runaway of the cell is remarkably suppressed, and further excellent snow melting ability can be secured.

The solar cell panel heat absorbing / dissipating system according to claim 6 is the solar cell panel absorbing / dissipating system according to any one of claims 1 to 5, wherein the header pipe and the heat pipe branch pipe are in the longitudinal direction. The cross section orthogonal to is formed in any one of a substantially rectangular shape, a substantially rectangular shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape, and the upper surface is flat and wide. .
With this configuration, in addition to the action obtained in any one of claims 1 to 5, the following action is obtained.
(1) The cross section of the header pipe and the heat pipe branch pipe is formed in any one of a substantially rectangular shape, a substantially rectangular shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape, and the upper surface (heat transfer surface) is flat. Therefore, the heat transfer surface between the header tube and the solar cell panel or heat transfer plate of the heat pipe branch tube can be increased, and the heat transfer efficiency with the solar cell panel can be increased.

  Here, if the cross section perpendicular to the longitudinal direction of the header pipe and the heat pipe branch pipe is made into a substantially rectangular shape or a substantially rectangular shape, the four outer peripheral surfaces of the header pipe and the heat pipe branch pipe can be flattened. When a heat dispersion member made of aluminum or the like that conveys heat from the pipe is fitted between the heat pipe branch pipes, the side surface of the heat distribution member and the side wall of the heat pipe branch pipe are brought into surface contact to widen the contact area. The heat exchange efficiency with the heat dispersion member can be increased. Moreover, since the bottom face of the header pipe and the heat pipe branch pipe is also formed flat, it can be stably installed in the solar power generation system, and is excellent in workability and preferable.

  Moreover, it can be set as the structure which the both ends of each of the heat pipe branch pipe connected to each of the two header pipes arrange | positioned at intervals. In this case, if a heat medium is passed through the heat source pipe of the header pipe to transfer the heat to the header pipe, the heat is released by the transfer of latent heat accompanying the evaporation of the working fluid in the header pipe and the condensation in the heat pipe branch pipe. Since heat transfer is performed in each of the two header tubes, the temperature variation of the heat pipe can be further reduced, and the temperature of the entire solar cell panel can be made uniform with no unevenness in the temperature distribution. it can.

A solar cell panel heat absorbing / dissipating system according to claim 7 is the solar cell panel absorbing / dissipating system according to any one of claims 1 to 6, wherein an upper surface of the heat pipe branch pipe and the header pipe is provided. The heat dissipating member is provided so as to be flush with or slightly lower than the upper surface and provided with a heat dissipating member disposed between the heat pipe branch pipes.
With this configuration, in addition to the action obtained in any one of claims 1 to 6, the following action can be obtained.
(1) Since the upper surface is formed to be flush with or slightly lower than the upper surfaces of the heat pipe branch pipe and the header pipe, and the heat dispersion member is disposed between the heat pipe branch pipes, the heat pipe branch pipe and the header pipe Thus, heat can be reliably transferred to the solar cell panel, cell, or heat transfer plate over the entire upper surface of the heat dispersion member.
(2) The side surface of the heat dispersion member and the side wall of the heat pipe branch pipe or header pipe can be brought into contact with each other to transfer heat from the heat pipe to the heat dispersion member to widen the heat absorbing / dissipating area. The temperature spot of each cell inside the battery panel can be reduced.
(3) Since the top surfaces of the heat pipe branch and header tubes and the top surface of the heat dissipating member are substantially flush, the heat pipe and the heat dissipating member can be handled like a planar panel, Since the battery panel can be supported by the entire surface of the heat pipe and the heat dispersion member, the solar battery panel can be prevented from being deformed or cracked by the weight of snow.

  Here, as the heat dispersion member, one made of copper, stainless steel, aluminum, magnesium, titanium, or other metal, or mortar, concrete, or other inorganic material is used. In particular, those made of metal such as copper, stainless steel, aluminum, magnesium, titanium, etc., and those coated with silicon ore as powder or fine powder are preferable because of their high thermal conductivity.

  The heat dispersion member is formed so that the upper surface thereof is flush with or slightly lower than the upper surfaces of the heat pipe branch pipe and the header pipe. Specifically, the upper surface of the heat dispersion member and the heat pipe branch pipe and the header pipe The difference from the height of the upper surface is 0 to 1 mm, preferably 0 to 0.5 mm. As the height difference becomes larger than 0.5 mm, the solar panel deforms at the edge of the heat pipe branch pipe and header pipe due to the weight of snow due to the step between the heat pipe branch pipe and header pipe and the heat dispersion member. There is a tendency for the holes to open easily. Since this tendency will become remarkable when it becomes larger than 1 mm, it is not especially preferable.

The solar cell panel heat absorption / dissipation system according to claim 8 is the solar cell panel heat absorption / dissipation system according to any one of claims 1 to 7, wherein the ground is connected to the heat pipe and the heat source tube. And a loop pipe for circulating the antifreeze collected from the hole formed therein.
With this configuration, in addition to the action obtained in any one of claims 1 to 7, the following action can be obtained.
(1) Since the temperature of the antifreeze is kept constant at about 13 ° C with geothermal heat at a stable temperature of about 15-17 ° C throughout the year about 10-50m underground, this antifreeze is circulated through the heat source pipe. In addition, the temperature of the solar cell panel can be made constant and used for cooling the solar cell panel and melting snow with accumulated snow, and does not require special energy for heating or cooling the antifreeze liquid of the heat medium, and is excellent in safety and energy saving.
(2) Since the temperature of geothermal heat is stable throughout the year, there is no change in temperature of the solar panel over time, power generation efficiency is stabilized over time, and power during power generation is remarkably stabilized.
(3) During snowfall, there is no need to cool or heat solar panels while melting a large amount of power like a heat pump, and it is not necessary to melt snow, and the pump is driven by using a stable heat source of underground heat. The solar panel can be easily cooled and melted with a small amount of electricity.
(4) Since the geothermal heat maintains a stable temperature, it is possible to prevent the antifreeze liquid from freezing inside the heat source pipe or the like even when the pump for circulating the antifreeze liquid is stopped.
(5) The solar panel heat can be stored underground as a heat source during periods of high solar radiation, and the stored heat can be reused as a heat source for melting snow in winter. Since a heat source that consumes a large amount of electric power is not required, it is excellent in energy saving.

  Here, various underground heat collecting elements can be used to collect heat from the hole formed in the ground. For example, a pipe filled with a heat medium is arranged in a casing driven to about 10 to 50 m underground. It is possible to use an underground heat exchanger formed by a bore hole, a spiral pipe, or the like. As the borehole, any of those conventionally used for collecting geothermal heat, such as a double pipe type and a U-shaped pipe type, can be used.

  The temperature of geothermal heat is stable throughout the year, and since heat is dispersed only about 50 cm per year in the ground, heat storage is high, and heat in the summer can be stored underground and reused in the winter. it can. By doing so, it can be sufficiently used as a heat absorption source or a heat radiation source without using a heat pump or a boiler, and is excellent in energy saving. As geothermal heat, not only the heat in the soil but also the groundwater and well water are stabilized by the geothermal heat, and can be fully utilized.

  The pipe in the borehole or the underground heat exchanger and the heat source pipe can be connected by the forward pipe and the return pipe covered with the heat insulating material to form a loop pipe. When a simple pump is installed in the loop piping, the antifreeze can be easily circulated from the borehole to the solar panel heat absorption / radiation system with a small head.

In the heat source tube, water containing an antifreeze such as ethylene glycol, propylene glycol, or potassium acetate aqueous solution or a surfactant is circulated as a heat medium.
When water containing a surfactant is used, the turbulent flow is reduced and the heat exchange capacity is lowered, but the friction between the heat source pipe and the liquid is reduced, and the flow rate is improved by about 20 to 30%. Since the improvement of the heat exchange capability by the improvement of the flow rate is greater than the improvement of the heat exchange capability by the turbulent flow, the heat exchange capability can be further improved by using a surfactant.

The solar cell panel heat absorbing / dissipating system according to claim 9 is the solar cell panel heat absorbing / dissipating system according to claim 8, and has a configuration in which a closed expansion tank is connected to the loop pipe. .
With this configuration, in addition to the operation obtained in the eighth aspect, the following operation can be obtained.
(1) Since the expansion tank buffers the volume change caused by the thermal expansion / contraction of the antifreeze liquid filled in the loop pipe, the loop pipe is filled with the antifreeze liquid. Can be circulated to the solar panel heat absorption / dissipation system.

According to the solar cell panel heat absorbing / dissipating system of the present invention configured as described above, the following effects can be obtained.
According to invention of Claim 1, it has the following effects.
(1) If there is a slight temperature difference, a large amount of heat can move between the header pipe and the heat pipe branch pipe in a short time, and the temperature difference between the header pipe and the heat pipe branch pipe becomes almost zero. As a result, the temperature variation of the entire solar panel can be eliminated to stabilize the power generation efficiency, the solar panel can absorb and dissipate heat, suppress thermal runaway, and further melt snow. A system can be provided.
(2) Snow that has fallen on the solar panel can be melted and removed immediately with heat from the heat pipe branch pipe and header pipe, and it has excellent snow removal performance and prevents the incidence of sunlight from being blocked by snow. It is possible to provide a solar cell panel heat sink / heat dissipating system capable of more sustainable and stable solar power generation.
(3) When the temperature of the solar cell panel rises, the heat pipe branch tube and the header tube immediately absorb heat, and the solar cell panel heat absorption / dissipation system that can cool the solar cell panel and suppress the reduction in power generation efficiency of the cell. Can be provided.
(4) Since a plurality of heat pipe branch pipes are branched from the header pipe, the length of the heat source pipe penetrating or attached to the header pipe can be shortened, and the heat source pipe disposed in the solar cell panel Since the path of the pipe becomes shorter and the pipe friction resistance becomes smaller, the pump that sends the heat medium needs only a small output, the pump drive requires little energy, the running cost is low, and the power consumption of the pump itself is extremely low In addition, it is possible to provide a solar cell panel heat sink / heat dissipating system that does not cause a decrease in photovoltaic power generation efficiency due to a large amount of power consumed by driving a heat source such as a heat pump.
(5) When underground heat is used as a heat source, the solar panel absorption and release heat that can store the temperature of the solar panel in the ground in the summer and melt snow using the heat stored in the ground in the winter A system can be provided.
(6) When the heat pipe is installed on the upper part of the back cover, the cooling energy needs to be the minimum necessary to adjust the cell temperature. It is possible to provide a solar cell panel heat absorbing / dissipating system capable of maximizing the power generation efficiency of the solar cell panel.
(7) When a heat pipe is disposed inside the solar cell panel, the thermal deterioration of the filler can be remarkably suppressed, and a solar cell panel heat absorption / dissipation system that improves the durability of the solar cell panel can be provided. .

According to invention of Claim 2, it has the following effects.
(1) By using a heat pipe plate in which a heat pipe is formed in a plate shape, if a part of the heat pipe plate is heated and cooled, the entire heat pipe plate is rapidly heated and cooled, so that the solar cell panel The entire system can be heated and cooled instantly, and the snow piled up on the solar panel can be melted to prevent the incidence of sunlight and sufficient power can be generated during the day. It is possible to provide a solar panel heat absorption / dissipation system that prevents thermal runaway of cells and suppresses a decrease in power generation efficiency.
(2) When the heat pipe plate is placed on the upper part of the back cover, the cooling energy needs to be the minimum necessary to adjust the cell temperature. In addition, it is possible to provide a solar cell panel heat sink / heat dissipating system that can maximize power generation efficiency.
(3) When a heat pipe plate is disposed inside a solar cell panel, it is possible to remarkably suppress the thermal deterioration of the filler, and to provide a solar cell panel heat absorption / dissipation system that improves the durability of the solar cell panel. it can.
(2) When geothermal heat is used as a heat source, solar panel absorption and heat dissipation that can store the temperature of the solar panel in the ground in the summer and melt snow using the heat stored in the ground in the winter A system can be provided.

According to invention of Claim 3, in addition to the effect of Claim 1 and 2, it has the following effects.
(1) By applying silicon ore powder or fine powder to the heat pipe and heat pipe plate, the heat conduction direction of the heat pipe is lost, and the solar cell panel has excellent heat exchange capability with the solar cell panel. A heat dissipation system can be provided.

According to invention of Claim 4, in addition to the effect of Claims 1 thru | or 3, it has the following effects.
(1) Even if the solar panel is exposed to strong sunlight for a long time, the generated heat is transferred to the heat transfer plate arranged under the back cover without any unevenness in the temperature distribution of the entire panel. Heat is quickly transferred from the heat transfer plate to the heat pipe, and then the heat is transferred rapidly from the heat pipe branch pipe to the header pipe so that there is no temperature difference between the heat pipe branch pipe and the header pipe, and the heat medium in the heat source pipe Since the heat is transmitted to the solar panel, the temperature of the entire solar panel is made uniform at a low temperature, and it is possible to prevent a decrease in power generation efficiency due to thermal runaway, and furthermore, the temperature of each cell in the solar panel becomes constant over time. Since the temperature can be stabilized, it is possible to provide a solar cell panel heat absorption / dissipation system capable of remarkably stabilizing the power generation of the solar cell panel.
(2) Even if snow accumulates on the solar cell panel, the heat of the heat medium in the heat source pipe is transferred to the header pipe, and the heat of the header pipe is so rapid that there is no temperature difference between the heat pipe branch pipe and the header pipe. It is transmitted to the pipe, and further quickly transferred from the heat pipe to the heat transfer plate, and then the heat transfer plate heats the entire solar cell panel through the back sheet, so that the snow accumulated on the solar cell panel can be melted, Since the incident of light is not blocked by snow, more sustainable power generation is possible, and since there is no unevenness in the temperature distribution of the entire solar panel, the temperature state of the solar panel can be accurately grasped and the optimum temperature is set. It is easy to provide a solar cell panel heat absorption / dissipation system capable of remarkably stabilizing power generation.
(4) When a heat pipe is arranged on the upper part of the back cover and a heat transfer plate is arranged on the upper part of the heat pipe, the inside of the solar cell panel can be uniformly heated and cooled. It is possible to provide a solar panel absorption and radiation system capable of preventing thermal runaway and suppressing thermal deterioration of the filler and further capable of melting snow.
(5) Since the heat transfer plate has the property that the heat given to a part is quickly dispersed throughout, the heat transfer plate is disposed above the heat pipe disposed above the back cover. In this case, it is possible to provide a solar cell panel heat sink / heat dissipating system capable of uniformly heating and cooling the solar cell panel even if the structure of the heat pipe is simplified.

According to the invention described in claim 5, in addition to the effects of claims 1 to 3, the following effects are provided.
(1) Heating / cooling is possible without any temperature spots inside the solar panel, improving the power generation efficiency of the solar panel, and there are no temperature spots in each cell, making it easy to set the optimum temperature. It is possible to provide a solar cell panel heat sink / heat dissipating system capable of always stabilizing the efficiency in the best state.
(2) It is possible to provide a solar panel absorption and radiation system that can improve the heat exchange efficiency with the heat pipe, remarkably suppress the thermal runaway of the cell, and ensure an excellent snow melting ability.

According to invention of Claim 6, in addition to the effect of any one of Claims 1 thru | or 5, it has the following effects.
(1) The cross section of the header pipe and the heat pipe branch pipe is formed in any one of a substantially rectangular shape, a substantially rectangular shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape, and the upper surface (heat transfer surface) is flat. Since the heat transfer surface between the header tube and the heat pipe branch solar cell panel or heat transfer plate can be enlarged, the solar cell having excellent heat transfer efficiency with the solar cell panel A panel heat sink / heat dissipating system can be provided.

According to invention of Claim 7, in addition to the effect of any one of Claims 1 thru | or 6, it has the following effects.
(1) Since the upper surface is formed to be flush with or slightly lower than the upper surfaces of the heat pipe branch pipe and the header pipe, and the heat dispersion member is disposed between the heat pipe branch pipes, the heat pipe branch pipe and the header pipe It is possible to provide a solar cell panel heat sink / heat dissipating system capable of reliably transferring heat to the solar cell panel, cell, or heat transfer plate over the entire upper surface of the heat dispersion member.
(2) The side surface of the heat dispersion member and the side wall of the heat pipe branch pipe or header pipe can be brought into contact with each other to transfer heat from the heat pipe to the heat dispersion member to widen the heat absorbing / dissipating area. It is possible to provide a solar battery panel heat sink / heat dissipating system capable of reducing the temperature spot of each cell inside the battery panel.
(3) Since the top surfaces of the heat pipe branch and header tubes and the top surface of the heat dissipating member are substantially flush, the heat pipe and the heat dissipating member can be handled like a planar panel, Since the battery panel can be supported by the entire surface of the heat pipe and the heat dissipating member, it is possible to provide a solar cell panel heat absorption / dissipation system that can prevent the solar cell panel from being deformed or cracked by the weight of snow.

According to the invention described in claim 8, in addition to the effects of claims 1 and 3 to 7, the following effects are provided.
(1) The temperature of the heat pipes and solar panel using the geothermal heat, which is stable throughout the year, is stable over time, and the power generated during power generation is remarkably stable. It is possible to provide a solar cell panel heat absorption / dissipation system that can be used for melting snow and does not require special energy for heating or cooling the antifreeze liquid of the heat medium and is safe and excellent in energy saving.
(3) During snowfall, there is no need to cool down the solar panel or melt snow while continuing to consume a large amount of power unlike a heat pump, and it is a little enough to drive the pump by using a stable heat source of underground heat. It is possible to provide a solar cell panel heat sink / heat dissipating system that can easily cool and melt snow with electric power alone.
(4) A solar panel heat absorbing / dissipating system capable of preventing the antifreeze liquid from freezing inside the heat source pipe or the like even when the pump that circulates the antifreeze liquid stops because the geothermal heat maintains a stable temperature. Can be provided.
(5) The solar panel heat can be stored underground as a heat source during periods of high solar radiation, and the stored heat can be reused as a heat source for melting snow in winter. Since a heat source that consumes a large amount of electric power is not required, a solar panel absorption and radiation system that excels in energy saving can be provided.

According to the invention described in claim 9, in addition to the effect of any one of claims 1 and 3 to 9, the following effect is obtained.
(1) Since the expansion tank buffers the volume change caused by the thermal expansion / contraction of the antifreeze liquid filled in the loop pipe, the loop pipe is filled with the antifreeze liquid. Can be circulated to the solar cell panel heat sink / heat dissipating system.

The partially broken perspective view which shows the structure which introduced the solar cell panel absorption-and-dissipation system in Embodiment 1 into the solar cell panel of the photovoltaic power generation system installed in the roof of a house Plan view of heat pipe of solar cell panel heat sink / heat dissipating system in Embodiment 1 Sectional drawing of the principal part in the AA line of FIG. (A) Schematic back side perspective view of heat dispersion member of solar cell panel heat absorbing / dissipating system of modified example (b) Cross-sectional view of main part taken along line BB of modified example The top view of the heat pipe of the solar cell panel absorption-and-radiation system in Embodiment 2 (A) Plan view of heat pipe of solar cell panel heat absorption / dissipation system in Embodiment 3 (b) Schematic diagram of main part cross-section along line CC in FIG. 6 (a) The top view of the heat pipe of the solar cell panel absorption-and-radiation system in Embodiment 4 The partially broken perspective view which shows the structure which introduce | transduced the solar cell panel absorption-and-radiation system in Embodiment 5 into the solar cell panel of a solar tracking type solar power generation system Plan view of heat pipe of solar cell panel heat absorption / dissipation system in Embodiment 5 Plan view of heat pipe of solar cell panel heat sink / heat dissipating system in Embodiment 6

Hereinafter, the present invention will be specifically described by way of examples. The present invention is not limited to these examples.
(Embodiment 1)
FIG. 1 is a partially broken perspective view showing a structure in which a solar cell panel heat absorbing / dissipating system according to Embodiment 1 is introduced to a solar cell panel of a solar power generation system installed on a roof of a house, and FIG. 3 is a plan view of a heat pipe of the solar cell panel heat absorbing / dissipating system in FIG. 3, FIG. 3 is a cross-sectional view of the main part taken along line AA of FIG. 1, and FIG. It is a model perspective view of a heat-distribution member, (b) is principal part sectional drawing in the BB line of a modification.

  1 to 3, reference numeral 1 denotes a solar cell panel heat sink / heat dissipating system attached on the roof 21 of the house 20, 2 denotes a solar battery panel disposed on the solar cell panel heat sink / heat dissipating system 1, and 3 denotes a solar battery panel. 2 is a heat pipe disposed under the back cover (not shown), 4 is a heat pipe disposed under the heat transfer plate and filled with an antifreeze working fluid that does not freeze up to around -30 ° C. 5, 5 are two header pipes arranged substantially in parallel, 6 is a metal fiber wick provided on the inner wall, and both ends communicate with each of the two header pipes 5, 5 and are arranged substantially in parallel. A plurality of heat pipe branch pipes, 7a a flow-side heat source pipe, 7b a return-side heat source pipe, 8 a connection pipe connecting the flow-side heat source pipe 7a and the return-side heat source pipe 7b, and 9 a heat pipe 4 and 4 joints connected to the flow-side heat source pipe 7a and the return-side heat source pipe 7b, 0 is a connecting pipe connecting the heat-feeding side heat source pipe 7a and the return-side heat source pipe 7b of the heat pipes 4 and 4 connected to the joint 9 in parallel, and 11 is between the heat pipe branch pipes 6 and the header pipes 5, 5. 5 is a heat dissipating member that fills the space 5, 22 a is a plywood, made of aluminum or the like, and is a base material on which the heat pipe 4 is placed on the upper surface of the roof 21, and 22 b is a heat pipe A fixing member 22c for fixing the position is a frame that surrounds the periphery of the solar cell panel 2 and the solar cell panel heat absorbing / dissipating system 1.

  12 is a borehole of an underground heat collecting element formed in the ground, 13 is a casing driven to a depth of about 10 to 50 m underground, 14 is a double pipe or U-shaped pipe disposed in the casing, etc. The geothermal pipe 15a is covered with a heat insulating material (not shown) and is connected to the geothermal pipe 14 and the feed side heat source pipe 7a to form a loop pipe, and 15b is covered with a heat insulating material (not shown) and the geothermal pipe 14 and the return side. A return pipe connected to the heat source pipe 7b to form a loop pipe, 16 is a pump disposed in the forward pipe 15a forming the loop pipe, 17 is a branch pipe branched from the return pipe 15b, and 18 is a branch pipe 17 at the bottom. It is a closed expansion tank in which a heat medium is accommodated on the branch pipe 17 side by a diaphragm or the like not shown. In the feed side heat source pipe 7a, the return side heat source pipe 7b, the connecting pipe 8, the connecting pipe 10, the geothermal pipe 14 in the bore hole 12, the forward pipe 15a, the return pipe 15b, and the pump 16, ethylene glycol, propylene glycol, An antifreeze heat medium (antifreeze) such as an aqueous potassium acetate solution is filled, and the heat medium filled in the heat source pipe 7, connecting pipe 8, connecting pipe 10, geothermal pipe 14, forward pipe 15, and pump 16 is filled. The volume change accompanying expansion / contraction is buffered by the heat medium in the expansion tank 18.

  In this Embodiment 1, the cross section orthogonal to the longitudinal direction of the header pipe | tube 5 and the heat pipe branch pipe 6 is formed in the same magnitude | size of a rectangular shape. The feed-side heat source pipe 7a and the return-side heat source pipe 7b are penetrated along the longitudinal direction of the header pipe 5, and both end portions of the header pipe 5 are outer peripheral walls of the feed-side heat source pipe 7a and the return-side heat source pipe 7b. It is sealed with. Reference numeral 8 denotes a connecting pipe for connecting the ends of the flow-side heat source pipe 7a and the return-side heat source pipe 7b.

In the first embodiment, the heat pipe 4 is arranged such that the header pipe 5 is arranged in parallel to the gradient direction of the solar cell panel 2 and the heat pipe branch pipe 6 is substantially orthogonal to the gradient direction of the solar cell panel 2. Has been.
In addition, the heat pipe branch pipe 6 can be arrange | positioned so that the angle with respect to the gradient direction of the solar cell panel 2 may be in the range of 60-90 degrees, preferably 70-90 degrees. As a result, the snowmelt water melted by the heat of the heat pipe branch pipe 6 flows in a planar shape on the solar cell panel 2, so that only the snow around the heat pipe branch pipe 6 melts to form a snow cave. It is possible to prevent the surrounding snow from remaining on the solar cell panel and becoming unable to remove snow.

  In FIG. 4, 19 is a modified example of the heat dissipating member 11, 19a is a heat transfer part of a thin heat dissipating member made of metal such as aluminum, and one surface is open, and 19b is glass wool or rock wool. It is a heat insulating material that is formed of inorganic fiber such as urethane foam, synthetic resin such as foamed polystyrene, fiber such as wood fiber, and the like and fitted in the opening of the heat dispersion member 19a. The heat dispersion member 19a can be arranged in place of the heat dispersion member 11 with the opening fitted with the heat insulating material 19b on the roof 21 side and the flat surface on the solar cell panel 2 side. Since the heat dispersion member 19 of the modification is formed in a thin box shape, the weight can be reduced, and since the heat insulating material 19b is fitted in the opening, heat radiation to the roof 21 can be reduced. Can reduce heat loss.

About the solar cell panel heat absorption / radiation system in Embodiment 1 of this invention comprised as mentioned above, the usage method is demonstrated below.
First, in the case of snow melting, the heat medium in the geothermal pipe 14 of the bore hole 12 is heated to about 13 ° C. by underground heat of about 15 to 17 ° C. The heating medium (antifreeze) in the heated geothermal pipe 14 drives the pump 16 disposed in the outgoing pipe 15a, and the flow side of the heat pipe 4 installed in the solar cell panel 2 from the outgoing pipe 15a. It introduces into the heat source pipe 7a. The heat medium is introduced from the flow-side heat source pipe 7 a, descends in the inclination direction of the solar cell panel 2 at the return-side heat source pipe 7 b facing through the connection pipe 8, and passes through the joint 9 and the connection pipe 10 to be adjacent heat. The pipe 4 enters from the feed-side heat source pipe 7a, passes through the connecting pipe 8 and goes down the opposite return-side heat source pipe 7b, passes through the return pipe 15b and is returned to the geothermal pipe 14 in the borehole 12 to circulate in the loop pipe. To do. Since the condensed working fluid in the heat pipe 4 is likely to flow down due to gravity in the inclination direction of the solar cell panel 2 of the header tube 5, the heat held by the heat medium is first obtained by heating one header tube 5 with the heat medium. Is provided to one header pipe 5 so that the working fluid in the header pipe 5 evaporates toward the heat pipe branch pipe 6 and the other header pipe 5. The working fluid vapor diffuses in the heat pipe branch pipe 6 and condenses to release condensation heat, and radiates heat to the heat dispersion member 11 and the back cover of the solar cell panel 2 through the pipe wall of the heat pipe branch pipe 6. The heat radiated to the back cover is transferred to the filler and the cell, and then transferred to the front cover. The heat medium that has flowed through the feed-side heat source pipe 7a of one header pipe 5 then enters the return-side heat source pipe 7b of the other header pipe 5, and evaporates the working fluid in the other header pipe 5. This operation is repeated, the heat exchanged and condensed working fluid is returned to the header tube 5 and dissipates heat to the snow accumulated on the surface of the solar cell panel 2 to melt the snow.

  In snow melting, the snow accumulated in the solar cell panel 2 above the high-temperature heat pipe branch pipe 6 and the header pipe 5 is first melted, and the snow melt water flows on the surface of the solar cell panel along the roof gradient. The lower surface of the snow surrounded by the pipe branch pipes 6 and 6 and the header pipes 5 and 5 is melted by the snow melting water, and the snow that has finally accumulated on the solar cell panel 2 can be removed.

  When the solar cell panel 2 is cooled at a time when the solar cell panel 2 rises due to a large amount of solar radiation such as summer, the heat of the solar cell panel 2 is transferred to the heat transfer plate 3 through the back cover, Next, it is transmitted to the heat dispersion member 11 and the heat pipe branch pipe 6. Then, the working fluid in the heat pipe branch pipe 6 absorbs the heat transmitted to the heat pipe branch pipe 6 and evaporates, and evaporates toward both header pipes 5 by capillary action. As a result, the heat retained by the working fluid is applied to both header tubes 5. After the working fluid vapor reaches the header pipe 5 and condenses and releases condensation heat, the heat in the header pipe 5 is radiated to the flow-side heat source pipe 7a and the return-side heat source pipe 7b. On the other hand, the working fluid condensed in the header pipe 5 flows into the heat pipe branch pipe 6 by capillarity, takes the heat of the solar cell panel 2 again, and evaporates toward the header pipe 5. Then, the heat of the header pipe 5 is carried into the ground by the heat medium passing through the flow-side heat source pipe 7a and the return-side heat source pipe 7b, and again becomes a low-temperature heat medium through the geothermal pipe 14 to the header pipe 5. While being sent, heat is stored in the ground around the borehole 12.

Here, in the first embodiment, the case where the heat dispersion member 11 is separately installed on the base material 22 has been described. However, the base material 22 and the heat dispersion member 11 are made of metal such as aluminum or synthetic resin. In some cases, the header pipe 5 and the heat pipe branch pipe 6 of the heat pipe 4 are fitted into a hollow formed integrally with concrete or the like. Thereby, the effect | action that workability can be improved is acquired.
In addition, the antifreeze liquid flowing in the loop pipe can be heated by using exhaust heat such as remaining hot water in a bath or waste water from a factory or home. In this case, a jacket is provided in the outgoing pipe 15a downstream of the pump 16, and the waste water is introduced into the jacket, and the heat exchange between the exhaust heat such as waste water in the jacket and the antifreeze liquid is performed through the pipe wall of the outgoing pipe 15a. Heat the antifreeze with the waste heat of the waste water. As a result, the temperature of the antifreeze liquid can be temporarily raised, and the snow on the solar cell panel 2 can be melted by the exhaust heat, so that the exhaust heat can be effectively used.

As described above, since the solar cell panel heat absorption / dissipation system according to Embodiment 1 of the present invention is configured, the following operation is obtained.
(1) Both end portions of the heat pipe branch pipe 6 communicate with each of the two header pipes 5, 5 disposed substantially in parallel, and the heat medium is a heat-feeding side heat source pipe of one header pipe 5. 7a is sent to the return side heat source pipe 7b of the other header pipe 5 to evaporate the working fluid in both header pipes 5, so that the working fluid in the header pipe 5 evaporates and the heat pipe branch pipe 6 Since heat is released by the transfer of latent heat accompanying condensation in each of the two header tubes 5 and 5, temperature spots on the heat pipe 4 can be reduced, and thermal runaway is excellent, and solar cells The snow facing the panel 2 can be melted without any spots.
(2) The snow that has fallen on the solar cell panel 2 installed on the roof 21 of the house 20 is immediately melted by the heat of the heat pipe branch pipe 6 and the header pipe 5 and divided into blocks, before being compacted. Because it slides down from the solar panel 2 in a soft state, it can safely slide down the roof snow without causing injuries to pedestrians who have hindered human walking and driving. It can be removed and has excellent snow removal performance.
(3) Since the header pipe 5 and the heat pipe branch pipe 6 have a rectangular cross section, the four outer peripheral surfaces of the header pipe 5 and the heat pipe branch pipe 6 can be flattened. The heat transfer area can be increased. Further, the heat dispersion member 11 made of aluminum or the like is fitted between the heat pipe branch pipes 6 so that the side surfaces of the heat dispersion member 11 and the side walls of the heat pipe branch pipe 6 and the header pipe 5 are brought into surface contact. The contact area can be widened, the heat exchange efficiency can be increased, and thermal runaway can be more effectively suppressed and the snow melting ability can be improved. Further, since the bottom surfaces of the header pipe 5 and the heat pipe branch pipe 6 are formed flat, the header pipe 5 and the heat pipe branch pipe 6 can be stably installed on the base material 22 and have excellent workability.
(4) The heat distribution member is formed between the heat pipe branch pipes 6, 6 and the header pipes 5, 5 so that the upper surface is flush with or slightly lower than the upper surfaces of the heat pipe branch pipe 6 and the header pipe 5. 11 and the heat transfer plate 3, heat transfer between the heat pipe branch pipe 6 and the header pipe 5 and the solar cell panel 2 can be ensured.
(5) The side surface of the heat dissipating member 11 and the side wall of the heat pipe branch pipe 6 or the header pipe 5 are brought into contact with each other to transmit heat of the heat pipe branch pipe 6 or the header pipe 5 to the heat dispersal member 11 so that the heat absorbing and radiating area is increased. Further, since the heat transfer plate 3 is provided, the thermal runaway of the solar cell panel 2 can be suppressed, and the unevenness of the temperature distribution can be remarkably reduced to significantly improve the power stability during power generation.
(6) Since the upper surfaces of the heat pipe branch pipe 6 and the header pipe 5 and the upper surface of the heat dissipating member 11 are formed substantially flush with each other, the solar cell panel 2 can be supported on the entire surface of the heat pipe 4 and the heat dispersal member 11. Therefore, it can prevent that the solar cell panel 2 deform | transforms with the weight of snow. Further, the solar cell panel 2, the heat pipe branch pipe 6, the header pipe 5, the heat distribution member 11, and the heat transfer plate 3 come into close contact with each other by the weight of snow accumulated on the solar cell panel 2, and heat transfer. The snow will be melted without fail.
(7) Since the heat pipe branch pipe 6 is provided with a wick on the inner wall, the heat exchange directivity is lost, the operation is stable, and the solar cell panel 2 can be absorbed in addition to the heat, and can absorb and release heat. Since the temperature distribution of the solar cell panel 2 is stable and the temperature distribution is stable over time, it is possible to suppress a decrease in power generation efficiency due to thermal runaway and to be extremely excellent in power stability during power generation. .

(Embodiment 2)
FIG. 5 is a plan view of a heat pipe of the solar cell panel heat sink / heat dissipating system in the second embodiment. In addition, the same thing as Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits description.
In the figure, 4a is a heat pipe of the solar cell panel heat absorption / dissipation system in the second embodiment, 6a is a plurality of heat pipe branches provided with metal fiber wicks on the inner wall and one end communicating with the header pipe 5 and substantially parallel to each other. A pipe 7 ′ is a return flow heat source pipe that is formed in the header pipe 5 to have the same thickness as that of the header pipe 5.

  In the heat pipe 4a of the solar cell panel heat absorbing / dissipating system in Embodiment 2 configured as described above, the header pipe 5 is arranged along the gradient direction of the solar battery panel 2, and the heat pipe branch pipe 6a is the solar battery panel. It is arranged so as to be substantially orthogonal to the gradient direction of No. 2, and is constructed in the same manner as in the first embodiment.

As described above, since the heat pipe 4a of the solar cell panel heat absorbing / dissipating system according to Embodiment 2 of the present invention is configured, the following operation is obtained.
(1) Since one end of the heat pipe branch pipe 6a communicates with one header pipe 5 and can be made compact, the circulation path of the heat medium can be simplified when the solar cell panel 2 is small. Can be increased.
(2) Since the heat return pipe 7 'for return flow is formed to have substantially the same thickness as the header pipe 5, the heat medium and the solar cell panel 2 are connected through the wall of the heat source pipe 7' for return flow. Can be directly heat-exchanged and snow melting efficiency can be improved.
(3) Since the wick is provided inside the heat pipe branch pipe 6a, the direction of heat exchange is lost and the operation is stabilized.

(Embodiment 3)
FIG. 6A is a plan view of a heat pipe of the solar cell panel absorption / dissipation system according to Embodiment 3, and FIG. 6B is a schematic cross-sectional view of an essential part of the CC line in FIG. In addition, the same thing as Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits description.
In the figure, 4b is a heat pipe of the solar cell panel heat absorption / dissipation system in Embodiment 3, 6b is a coating layer 6 'coated with silicon ore powder and fine powder on its surface, and one end communicates with the header tube 5 A plurality of heat pipe branch pipes 6c arranged substantially in parallel, 6c is a pressure equalizing pipe communicating with the other end of the heat pipe branch pipe 6b, 7 is a feed side heat source pipe 7a and a return side heat source pipe in the first embodiment. Similarly to 7b, a heat source pipe of a return flow is formed in which a heat medium is sent inside and penetrates in the longitudinal direction of the header pipe 5.

  In the heat pipe 4b of the solar cell panel heat absorbing / dissipating system in Embodiment 3 configured as described above, the header pipe 3 is arranged along the gradient direction of the solar battery panel 2, and the heat pipe branch pipe 6b is the solar battery panel. It is arranged so as to be substantially orthogonal to the gradient direction of No. 2, and is constructed in the same manner as in the first embodiment.

As described above, since the heat pipe 4b of the solar cell panel heat sink / heat dissipating system according to Embodiment 3 of the present invention is configured, the following operation is obtained.
(1) Since one end of the heat pipe branch pipe 6b communicates with one header pipe 5 and can be made compact, the circulation path of the heat medium can be simplified when the solar cell panel 2 is small. Can be increased.
(2) Since the pressure equalizing pipe 6c communicates with the other end of the heat pipe branch pipe 6b, the pressure in the heat pipe branch pipe 6b can be made uniform and temperature spots can be reduced.
(3) Since the surface of the heat pipe branch pipe 6b has a coating layer of silicon ore powder and fine powder, it can not only heat the solar battery panel but also cool it, and suppress the thermal runaway of the cell. In addition, it is possible to prevent snow accumulation and freezing on the solar cell panel and to melt snow.

(Embodiment 4)
FIG. 7 is a plan view of a heat pipe of the solar cell panel heat absorbing / dissipating system in the fourth embodiment. In addition, the thing similar to Embodiment 1 thru | or 3 attaches | subjects the same code | symbol, and abbreviate | omits description.
In the figure, 4c is a heat pipe of the solar cell panel heat absorption / dissipation system in Embodiment 4, 6d is provided with a wick such as metal fiber on the inner wall, further coated with fine powder of silicon ore on the surface and one end communicating with the header tube 3 And a plurality of heat pipe branch pipes arranged substantially in parallel.

  In the heat pipe 4c of the solar cell panel heat sink / heat dissipating system in Embodiment 4 configured as described above, the header pipe 5 is arranged along the gradient direction of the solar battery panel 2, and the heat pipe branch pipe 6d is the solar battery panel. It is arranged so as to be substantially orthogonal to the gradient direction of No. 2, and is constructed in the same manner as in the first embodiment.

As mentioned above, since the heat pipe of the solar cell panel heat absorption / dissipation system in Embodiment 4 of this invention is comprised, the following effects are acquired.
(1) Since one end of the heat pipe branch pipe 6b communicates with one header pipe 5 and can be made compact, the circulation path of the heat medium can be simplified when the solar cell panel 2 is small. Can be increased.
(2) Since the heat pipe branch pipe 6d extends from the header pipe 5 to the left and right and communicates with each other, heat exchange with a large area of the solar cell panel is possible with one header pipe.
(3) Since a wick such as a metal fiber is provided on the inner wall of the heat pipe branch pipe 6d, and the surface is coated with silicon ore powder or fine powder, the direction of heat exchange is lost and the operation is stabilized. , Heat exchange capacity is increased.

(Embodiment 5)
FIG. 8 is a partially broken perspective view showing a structure in which the solar cell panel heat sink / heat dissipating system in the fifth embodiment is introduced into the solar cell panel of the solar light tracking type solar power generation system, and FIG. 9 is the sun in the fifth embodiment. It is a top view of the heat pipe of a battery panel absorption-and-radiation system. Components similar to those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  8 and 9, reference numeral 33 denotes a solar tracking power generation system, 34 denotes a support portion of the solar tracking power generation system 33, 1a denotes a solar battery panel heat absorption / dissipation system attached to the solar tracking solar power generation system 33, and 23. Is a solar cell panel of the solar cell panel heat absorbing / dissipating system 1a, 24 is a heat transfer plate disposed below a back cover (not shown) of the solar cell panel 23, 25 is a heat pipe disposed below the heat transfer plate, In FIG. 9, 26 and 26 are two header pipes arranged substantially in parallel, 27 is a metal fiber wick provided on the inner wall, and both end portions communicate with each of the two header pipes 26 and 26 and are substantially parallel. A plurality of arranged heat pipe branch pipes, 28a is a feed-side heat source pipe, 28b is a return-side heat source pipe, 29 is a connection pipe that connects between the feed-side heat source pipe 28a and the return-side heat source pipe 28b, 30 Is a heat pie 25, 25 are connected to the feed-side heat source pipe 28a and the return-side heat source pipe 28b, 31 is connected to the joint 30 and the heat-pipe 25, 25 is connected to the feed-side heat source pipe 28a and the return-side side. A connection pipe 32 connecting the heat source pipes 28b is a heat dispersion member (FIG. 8) that fills the space between the heat pipe branch pipes 27 and the header pipes 26.

  In the present embodiment, the sections perpendicular to the longitudinal direction of the header pipe 26 and the heat pipe branch pipe 27 are formed in the same rectangular shape. The feed-side heat source pipe 28a and the return-side heat source pipe 28b are penetrated along the longitudinal direction of the header pipe 26, and both end portions of the header pipe 26 are outer peripheral walls of the feed-side heat source pipe 28a and the return-side heat source pipe 28b. It is sealed with.

  In the fifth embodiment, the heat pipe 25 is arranged so that the header pipe 26 is substantially orthogonal to the gradient direction of the solar cell panel 23, and the heat pipe branch pipe 27 is substantially parallel to the gradient direction of the solar cell panel 23. It is arranged to be.

  The solar tracking power generation system 33 is a solar power generation system that tracks the movement of the sun by automatically adjusting the rotation angle in the horizontal direction and the angle in the vertical direction (elevation angle) with respect to the ground surface, and obtains the most incident light amount is there. Since this solar tracking power generation system 33 includes a movable part, the forward pipe 15a and the return pipe 15b located at the movable part are made of a deformable material such as an elastic material such as resin or rubber, or a flexible pipe. .

  Regarding the solar cell panel heat sink / heat dissipating system according to the fifth embodiment of the present invention configured as described above, the method of use is the same as that of the first embodiment.

As mentioned above, since the solar cell panel heat absorption / radiation system in Embodiment 5 of this invention is comprised, the following effects | actions are acquired.
(1) Both ends of the heat pipe branch pipe 27 communicate with each of the two header pipes 26, 26 disposed substantially parallel to each other, and the heat medium is a heat source on the flow side of the one header pipe 26. Since the pipe 28a flows to the return side heat source pipe 28b of the other header pipe 26 and the working fluid in both the header pipes 26 is evaporated, the working fluid in the header pipe 26 is evaporated and condensed in the heat pipe branch pipe 27. The release of heat due to the transfer of latent heat is performed in each of the two header pipes 26, 26, the temperature spots of the heat pipe 27 can be reduced, and the solar panel 23 and the temperature distribution are free of spots. By exchanging heat in a state, it is possible to effectively suppress the thermal runaway of the cell to suppress a decrease in power generation efficiency, and further melt snow that has accumulated snow without any spots.
(2) The snow that has fallen on the solar cell panel 23 is immediately melted by the heat of the heat pipe branch pipe 27 and the header pipe 26 and divided into blocks, and the solar battery is in a soft state before being compacted. Since it slides down from the panel 23, it can be removed by sliding down the snow safely without causing injury to pedestrians who have hindered human walking and driving. .
(3) Since the header pipe 26 and the heat pipe branch pipe 27 have a rectangular cross section, the four outer peripheral surfaces of the header pipe 26 and the heat pipe branch pipe 27 can be flattened. The heat transfer area can be increased. Further, the heat dispersion member 32 made of aluminum or the like is fitted between the heat pipe branch pipes 27 so that the side surfaces of the heat dispersion member 32 and the side walls of the heat pipe branch pipe 27 and the header pipe 26 are brought into surface contact. The contact area can be increased and the heat exchange efficiency can be increased. Further, since the bottom surfaces of the header pipe 26 and the heat pipe branch pipe 27 are formed flat, the header pipe 26 and the heat pipe branch pipe 27 can be stably installed on the base material 33 and have excellent workability.
(4) A heat dispersion member having an upper surface formed flush with or slightly lower than the upper surfaces of the heat pipe branch pipe 27 and the header pipe 26 and disposed between the heat pipe branch pipes 27 and 27 and the header pipes 26 and 26. 32 and the heat transfer plate 24, the heat transfer between the heat pipe branch pipe 27 and the header pipe 26 and the solar battery panel 23 can be ensured, and the thermal runaway of the cells in the solar battery panel can be prevented. Prevents the reduction of power generation efficiency and prevents snow melting.
(5) The side surface of the heat dispersion member 32 and the side wall of the heat pipe branch pipe 27 and the header pipe 26 are brought into contact with each other, and heat of the heat pipe branch pipe 27 and the header pipe 26 is transmitted to the heat dispersion member 32 to increase the heat absorption and radiation area. Further, since the heat transfer plate 24 is provided, the temperature variation of the solar cell panel 23 is remarkably reduced, the electromotive force of each cell inside the solar cell panel is made constant, and the power stability is remarkably improved. be able to.
(6) Since the upper surfaces of the heat pipe branch pipe 27 and the header pipe 26 and the upper surface of the heat dispersion member 32 are formed substantially flush, the solar cell panel 23 can be supported by the entire surface of the heat pipe 25 and the heat dispersion member 32. Therefore, it can prevent that the solar cell panel 23 deform | transforms with the weight of snow. Further, the solar battery panel 23, the heat pipe branch pipe 27, the header pipe 26, the heat dissipating member 32, and the heat transfer plate 24 come into close contact with each other by the weight of snow accumulated on the solar battery panel 23, thereby transferring heat. The snow will be melted without fail.
(7) Since the heat pipe branch pipe 27 is provided with a wick on the inner wall, the heat exchange directivity is lost, the operation is stable, and the heat absorption and radiation are excellent, so there is no uneven temperature distribution of the solar cell panel 23 over time. Since the temperature is stable, the power generation of each cell inside the solar cell panel is unified, and the power generation of the cell becomes constant over time, so that the power stability during power generation is remarkably excellent.

(Embodiment 6)
FIG. 10 is a plan view of a heat pipe of the solar cell panel heat absorbing / dissipating system in the sixth embodiment. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 5, and description is abbreviate | omitted.
In the figure, 25a is a metal heat pipe, 37a is a forward pipe, and 37b is a return pipe.

  In the heat pipe 25a of the solar cell panel heat absorbing / dissipating system in the sixth embodiment configured as described above, the header pipe 26 is arranged substantially orthogonal to the gradient direction of the solar battery panel 23, and the heat pipe branch pipe 27 is solar. The battery panel 23 is disposed substantially parallel to the gradient direction and is constructed in the same manner as in the fifth embodiment.

As described above, since the heat pipe 25a of the solar cell panel heat sink / heat dissipating system in the sixth embodiment of the present invention is configured, the following actions are obtained in addition to the actions of the fifth embodiment.
(1) Since the heat medium of the same temperature uniformly spreads over the entire header tube, the uneven temperature distribution of the entire solar cell panel can be remarkably suppressed, and there is no temperature unevenness of each heat pipe 15a. The electromotive force of the cells in the panel is unified, the power stability during power generation is excellent, and since geothermal heat is used, the temperature is stable over time, and the power during power generation is stable over time. ing.
(2) Since the heat pipe is made of metal, the solar cell panel can be cooled as well as heated, and thermal runaway can be suppressed, snow accumulation and freezing can be prevented, and snow can be melted.

  Without using heat sources such as heat pumps and boilers that consume a large amount of power, and with simple construction, the solar panel is cooled during high temperatures and high temperatures to prevent a decrease in power generation efficiency due to an increase in cell temperature. In the low temperature and snowy seasons, it is possible to heat the solar panel and melt the snow that has accumulated, so that sunlight can be always incident on the solar panel. It is possible to provide a solar panel heat absorption / dissipation system that can maintain a constant temperature over time with no unevenness in distribution and can significantly improve the power generation efficiency and power stability of solar power generation. .

DESCRIPTION OF SYMBOLS 1, 1a Solar cell panel absorption-and-dissipation system 2, 23 Solar cell panel 3, 24 Heat-transfer plate 4, 4a, 4b, 4c, 25, 25a Heat pipe 5, 26 Header pipe 6, 6a, 6b, 6d, 27 Heat pipe Branch pipe 6c Pressure equalizing pipe 6 'Coating layer 7a, 28a Feeding side heat source pipe 7b, 28b Returning side heat source pipe 7, 7' Returning heat source pipe 8, 29 Connecting pipe 9, 30 Joint 10, 31 Connecting pipe 11a , 32 Heat distribution member 12 Bore hole 13 Casing 14 Geothermal pipes 15a, 37a Outward pipe 15b, 37b Return pipe 16 Pump 17 Branch pipe 18 Expansion tank 19 Modified heat distribution member 19a Heat transfer section 19b of modified heat distribution member Heat insulation material 20 of example heat dispersion member House 21 Roof 22a Base material 22b Fixing member 22c Frame 31a Liquid supply side connection pipe 31b Return flow side connection pipe 33 Solar tracking type power generation Stem 34 support section

Claims (9)

A solar cell panel absorption / dissipation system in which a heat pipe is disposed below or above the back cover of the solar cell panel, wherein the heat pipe is (a) a heat source tube,
(B) a header pipe in which the heat source pipe is disposed or provided;
(C) A solar panel absorbing and radiating system comprising a plurality of heat pipe branch pipes branched from the header pipe. A solar cell panel absorption / dissipation system in which a heat pipe plate is disposed on the lower or upper portion of the back cover of the solar cell panel, wherein the heat pipe plate is
(A) a flat plate in which a groove is formed;
(B) a closing plate that closes the groove to form a cavity;
(C) a working fluid enclosed in the cavity,
(D) A solar cell panel heat sink / heat dissipating system, wherein a heat source pipe is disposed or provided in the heat pipe plate. 3. The solar cell panel heat absorbing / dissipating system according to claim 1, wherein silicon ore powder or fine powder is applied to the heat pipe or the heat pipe plate. 4. The solar panel absorption and radiation system according to claim 1, wherein a heat transfer plate is disposed on the heat pipe or the heat pipe plate. 4. The solar panel absorption and radiation system according to claim 1, wherein the back cover is made of a heat transfer plate, and the heat pipe or the heat pipe plate is arranged below the heat transfer plate. The header pipe and the heat pipe branch pipe have a cross-section orthogonal to the longitudinal direction formed in any one of a substantially rectangular shape, a substantially rectangular shape, a substantially triangular shape, a substantially oval shape, and a substantially semicircular shape. The solar cell panel heat absorbing / dissipating system according to claim 1, wherein the solar cell panel is formed flat. The upper surface of the heat pipe branch pipe and the header pipe is formed to be flush with or slightly lower than the upper surface of the heat pipe branch pipe and includes a heat dispersion member disposed between the heat pipe branch pipes. The solar cell panel heat absorption and dissipation system according to any one of 1 to 6. The heat pipe or the heat pipe plate, and a loop pipe that circulates the antifreeze collected from a hole portion that is connected to the heat source pipe and formed in the ground. The solar cell panel absorption-and-radiation system as described in any one of them. The solar cell panel heat-absorbing / dissipating system according to claim 8, wherein a sealed expansion tank is connected to the loop pipe.

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