TWM468844U - Solar energy collector - Google Patents

Abstract

A solar energy collector comprises a solid body having a substantially planar solar energy absorbing collecting surface. The solid body has a first thickness at a center portion tapering to a second thickness at each of a pair of opposing edge portions defining a width of the body. A bore extends completely through the body along its length and is aligned along an axis at the center portion. A window transparent at most solar radiation in the visible spectrum and near UV to infrared-red solar energy wavelengths is disposed at a distance from the collecting surface, the window sealed around a periphery of the collecting surface to define a sealed nitrogen filled gap between the collecting surface and the bottom surface of the window. The solar energy collector is a major component of a large scale solar thermal power plant.

Description

Solar collector

This application is a continuation of the U.S. Patent Application Serial No. 13/251,937, filed on Oct. 18, 2011, which is incorporated herein by reference.

The present invention relates to the design of a dual source solar and thermal power generation, and more particularly to the design of a power plant with a solar collector and associated thermal power generation equipment, utilizing the proposed special solar collector, and with Vacuum or nitrogen-filled, auxiliary boiler/steam superheater and all thermal power generation systems.

Solar energy per minute directly on the surface of the Earth is equivalent to burning about 100,000,000 tons of coal per minute. The average solar energy on the Earth's surface is about 2 calories per minute per square centimeter, which is equivalent to 4423 BTU (British Thermal Units) per square foot per day. In each individual The solar energy received by the area will vary depending on the clouds in the air, the moisture in the atmosphere, the dust in the air, the location and season. For example, in the southwestern United States along the Colorado River from Las Vegas to Mexico, the solar energy per square foot is about 1880 BTU to 2000 BTU per square foot per day. These areas have more than 300 days of sunny day each year. From Las Vegas, along the Colorado River to the Mexican border, the area is approximately 60,000 square miles, with the highest potential solar energy. A rough estimate of the area, 20% of the total area, or approximately 12,000 square miles (approximately 7.68 million acres), can be used for solar collectors. The heat harvesting potential of this desert area can accommodate more than 200 solar power plants with more than 300 megawatts. The total power generation is sufficient to supply electricity demand on the West Coast and the Southwestern United States. Based on these power generation potentials, it is reasonable to build new transmission lines.

The world's oil supply period is only 60 years, nuclear fuel supply is only 80 years, and the remaining 80 years of natural gas reserves and more than 300 years of coal supply, so we should actively develop solar energy with broad potential. If you do this, there is no need to build more coal or nuclear power plants. This can solve the mining problems of the whole world and the refining challenges of uranium nuclear power fuels, and deal with and operate useless waste nuclear fuel, reduce the emission of additional carbon dioxide, reduce the impact of global warming and the environmental crisis. Can be solved.

The development of solar power technology is a new trend in the industry. A large amount of investment in many solar power projects has been planned and / or under construction. However, the results have been less than expected, and advances in solar power technology have been lower than expected. The return on invested capital is mostly lower than the original investment. Based on this, the electricity price from the fossil fuel power generation is lower than the electricity price from solar power generation. Many solar power plants have been abandoned during construction or short-term operations. In general, because the return on capital is lower than expected, bankers will hesitate to invest in solar power plant projects. This is a disadvantage to the ambition of humans to use solar power to generate electricity. A lot of solar energy is no longer a day after day. Being used continuously. This creation is based on overcoming these difficulties and provides a way to effectively use solar energy until the technology of solar power generation develops to a more efficient and practical use.

Solar photovoltaic technology has made great progress. The current conversion rate of solar energy is 12-15%. However, this is far lower than the efficiency of a nuclear power plant with a utilization rate of 35% or a thermal power plant with a utilization rate of 38%. Most of the energy of solar energy is not fully utilized. Another disadvantage is that the power generated in the system is a low direct current (DC) voltage and therefore not suitable for transmitting power to the user over long distances. Larger outputs require very high cost equipment for photovoltaic solar power systems, such as a 3 million watt power plant. Economic factors have hampered the factory and the utilization of solar energy is also low. To make matters worse, under the bombardment of ultraviolet (UV) radiation, those high-cost solar panels have gradually deteriorated before the investment capital is recovered. Therefore, photovoltaic power plants with high output are not commercially viable. Many factories have been established, built, and abandoned. These are all examples of the failure of economic activity.

Another option is the solar thermal power station. This is a power plant that incorporates a solar collector and a small auxiliary boiler/steam superheater steam turbine generator. For low temperature steam turbines, in order to drive the turbine, a minimum steam temperature of 680 °F (360 °C) is required. This is an elusive goal for a single solar collector. Referring to Figure 5, including the auxiliary boiler/steam superheater, it provides additional heat above the collected solar heat. This will ensure that the turbine can operate stably for a long time. This setup can also be used to generate electricity on cloudy or rainy weather conditions.

Auxiliary boiler/steam superheater will need to burn a small amount of natural gas to supply about 20% of the required heat. The advantage is that it can continue to use a large amount of no-cost solar power.

The conversion rate of solar energy into electricity is estimated to be 300 megawatts (MW) too The Yangneng Power Plant requires approximately 600 acres. More than 200 such plants will provide 60,000 megawatts of output, such as sufficient power to fully supply the entire West Coast of the United States.

The three most important engineering considerations for solar farm power generation are: (1) harvesting solar energy, (2) maintaining harvested solar energy, and (3) using it.

First, the technical aspects necessary are how to collect and effectively absorb solar energy, and how to save the collected energy without loss.

Finally, the collected and preserved solar energy needs to be able to be used to generate electricity. In the present context, it has been proposed to use the collected solar thermal energy to heat water or other heating medium to approach a desired temperature level, for example, the final product, heated steam, may be sufficient to drive a turbine generator of a solar thermal power plant. The steam temperature sufficient to drive the turbine is estimated to be approximately 680 °F (360 °C).

Other important considerations are the overall cost of the plant and its ability to operate over the long term. The reasonableness of the cost in the factory and the long-term operation of the plant are necessary conditions, otherwise it will be an unrealistic capital investment. If equipment, labor and fuel costs are too high, it will not be feasible to build a solar thermal power station. Solar power plants that have had too many high capital investments have been abandoned because of the high cost, low efficiency, or efficient operation for a relatively short period of time. The economics and long-term effective operation of the plant are crucial to make the plant practical.

A solar collector comprising a solid body having a generally flat surface as a collection surface for absorbing solar energy. The thickness of the solid body from its central portion to its opposite edge portion The degree is tapered, the central portion has a first thickness, the edge portion has a second thickness, and a pair of opposing edge portions define the width of the body. A hole extends completely through the body along the length of the body, aligned with an axis of the central portion. A thin transparent window structure that selects solar wavelengths (eg, ultraviolet radiation) is disposed on the collection surface at a distance that is sealed around the collection surface to define a bottom between the collection surface and the window structure. A sealed vacuum gap between the surfaces, as an option, it is also possible to fill the gap with nitrogen instead of vacuum. The vacuum gap, rather than the air gap, prevents heat transfer from the collection surface to the bottom surface of the window structure due to air because the oxygen in the air has high thermal conductivity. The glass forming the window structure may have a thickness of 1/16 inch or less to maximize the penetration of solar radiation, and ordinary glass of 1/16 inch or less cannot withstand the atmospheric pressure, so the glass used should be tempered glass. To resist atmospheric pressure. Another way is to fill the gap with nitrogen instead of normal air. The advantage is that nitrogen can withstand atmospheric pressure and nitrogen is more stable and reliable than oxygen in suppressing temperature changes and reducing heat transfer because nitrogen is an inert gas.

In an exemplary embodiment, the first thickness at the central portion is approximately 2.5-3.0 inches, and the second thickness of the opposing edge portions may be approximately 0.25-0.5 inches, and the first thickness to the second thickness Gradually decreasing in a substantially linear manner. The drilled hole can have a diameter of about 2 inches. The thicker central portion of the body provides a more efficient heat sink effect and provides sufficient space for the holes to be placed completely inside the body. Another effect is to provide sufficient mechanical strength to withstand the pressure of water or liquid at high temperatures. One purpose of setting a pair of opposing edges to be thin is to save material to reduce cost.

The plane's absorbing solar collection surface is black, and black is the most efficient color for absorbing solar energy in the visible spectrum, as is the wavelength between the ultraviolet and infrared rays of solar radiation. this. The body can be formed using different techniques, one technique can be casting and the other technique can be by extrusion. The body can be made of metal, such as aluminum, which has high thermal conductivity and low cost in many metals. In some embodiments, the body is formed of aluminum and the planar solar absorbing collection surface can be black anodized aluminum or black. Black anodized aluminum overlaid on an aluminum body provides the most efficient solar absorption. In the window structure formed of transparent glass, energy carrying solar radiation between the wavelength of ultraviolet light and the wavelength of infrared light can pass through the transparent glass.

In many linear columns, the solar collectors are lined up.

Water, propylene glycol or liquid salts can be used as heat transfer materials in solar collectors.

When the water is heated to 212°F (100°C), it begins to boil and turn into steam. The amount of steam will increase and the pressure in the pipeline will increase. This is undesirable in the initial heating process. One of the ways to keep the water at a high temperature still liquid is to add a booster to the water piping system. This will give the water temperature and pressure a higher value before the water is converted to usable steam.

Although a dual-energy solar power plant would use an auxiliary boiler/steam superheater to burn a small amount of natural gas, making it not a 100% complete solar power plant, the ability to use 0% or 90% of solar energy would be a problem. According to the expected solar collector, the collector temperature can be as high as 300 °F when using conventional spacers. When vacuum technology is applied to the collector, the temperature will be as high as 500~600°F. Still, it is still below the required temperature of 680oF. In order to increase the temperature to the required 680oF, a natural gas heating boiler/steam superheater is necessary, otherwise the required conditions cannot be achieved. Auxiliary boiler steam superheaters are still needed for solar collectors filled with nitrogen.

It is a more difficult goal to achieve 680oF of steam using the expected solar collector alone. Please refer to Figure 5, including the auxiliary boiler/steam superheater, which supplies the heat of the collected solar energy. Extra heat outside, which will ensure long-term stable operation of the turbine. This setup can also be used to generate electricity on cloudy or rainy weather conditions.

Plant facilities include pipelines, pumps, heat exchangers, condensers, air separators, valves, turbine generator sets, water tanks and water storage tanks.

10‧‧‧Solar collectors or solar collectors

12‧‧‧ Subject

14‧‧‧Flat solar absorption surface

16‧‧‧Central Part

18‧‧‧A pair of opposite edge parts

20‧‧‧ hole

22‧‧‧ window structure

24‧‧‧ Sealed vacuum gap

26‧‧‧Frame

28‧‧‧Isolation

30‧‧‧Installation structure

32‧‧‧Upright support members

34‧‧‧ label

36‧‧‧Horizontal support members

38‧‧‧Vertical components

40‧‧‧Solar-driven power generation system

41‧‧‧Supercharged system

42‧‧‧ heat exchanger

44‧‧‧Primary line group

46‧‧‧heat transfer liquid circulation pump

48‧‧‧ storage tank

50‧‧‧First valve

52‧‧‧Secondary line group

54‧‧‧Steam superheater

56‧‧‧Steam heat exchange unit

58‧‧‧Water tank unit

60‧‧‧burning unit

62‧‧‧Steam turbine

64‧‧‧Generator

66‧‧‧Condensate pump

68‧‧‧Condenser

70‧‧‧ Feed pump

72‧‧‧Deaerator or air separator

80‧‧‧Solar power plant

82‧‧‧Array

84‧‧‧ Temperature sensor

86‧‧‧Second valve

88‧‧‧third valve

90‧‧‧ heat exchanger

91‧‧‧ Pressing device

92‧‧‧Circulating pump

94‧‧‧fourth valve

96‧‧‧ fifth valve

98‧‧‧Heat exchange liquid tank

100‧‧‧ sixth valve

104‧‧‧Superheater

106‧‧‧ Turbine

108‧‧‧Generator

110‧‧‧ pathway

Figure 1A is a schematic diagram showing a top view of an illustrative solar collector in the present creation.

Figure 1B is a cross-sectional view of a solar collector.

Figure 2 shows a way of installing a solar collector of the present invention.

Figure 3 is a schematic illustration of how a solar collector is used in a solar power plant, which may be a simplified cross section of a collector on a one mile long solar collector line, in accordance with the present teachings. Figure.

4 is a schematic diagram of a factory layout of a large-scale solar power plant according to the present creation.

The graph shown in Figure 5 shows the source of heat from various sources, namely solar energy, the increased heat in the collected heat by using vacuum technology to avoid heat loss, and the heat provided by the auxiliary boiler/steam superheater.

Those of ordinary skill in the art will appreciate that the following description of the present invention is by way of illustration only, and not limitation. Many modifications and variations are possible within the scope of the present invention for the skilled artisan.

Referring first to Figures 1A and 1 B, top and schematic cross-sectional views of solar collector 10 are shown, respectively, in accordance with some embodiments of the present teachings.

The solar collector 10 includes a solid body 12 having a generally flat collection surface 14 that absorbs solar energy. The body 12 is made of a highly efficient thermally conductive material, but should be sufficiently low to be viable in a power plant. The configuration of the planar solar absorption collecting surface 14 should be such as to maximize energy absorption. In some embodiments of the present creation, the color of the collection surface 14 is black. The body 12 can be made of a metal, such as aluminum. Body 12 can be formed using different fabrication techniques. One technique is to perform extrusion (or stamping), and if the cross-section of the body 12 along its entire length is uniform, extrusion is possible. Those skilled in the art will appreciate that other techniques such as casting may also be employed to form body 12. In some embodiments, the body 12 is formed of aluminum, and the planar solar absorption collecting surface 14 can be a black anodized plating or directly painted black to make it non-reflective or low reflective to a maximum Limit energy absorption. The black anodized aluminum coating is also a collection of hot aluminum sheets over the aluminum body to provide a highly efficient solar collection. The window structure 22 can be made of glass that is capable of transmitting most of the radiation of solar radiation, such as solar radiation from the visible region of the spectrum between ultraviolet light and infrared light, since they contain most of the energy of sunlight.

In an exemplary embodiment, the first thickness at the central portion of the body 12 can be It is about 2.5 to 3 inches and the second thickness of a pair of opposing edge portions of the body 12 can be about 0.25 to 0.5 inches. In one embodiment of the present creation, the first thickness to the second thickness are linearly decreasing. The thicker central portion of the body provides more efficient heat dissipation and provides sufficient space for the holes to be fully built into the body, and another function to provide sufficient mechanical strength to withstand the pressure of high temperature water or liquid from within the holes. Setting a thinner edge portion saves material and reduces costs. In some particular embodiments of the solar power plant, the body 12 can be prepared to have a suitable length. In one embodiment, body 12 has a width of about 2 feet, and those skilled in the art will appreciate that the length of any body that needs to be selected for installation will depend on practical considerations based on the particular application. In one embodiment, the length selected is about 8 feet, as will be appreciated by those skilled in the art, such as the weight of the collector, etc., which will affect the choice of length values.

The thickness of each of the edges of the solid body from its central portion 16 to its pair of opposing edge portions 18 is progressively smaller, the central portion 16 has a first thickness, the edge portion 18 has a second thickness, and the pair of edge portions 18 define The width of the body. A bore 20 extends along the length of the body and extends completely through the body, with the bore 20 aligned with the axis at the central portion 16. In use, the orifice 20 carries a heat carrier fluid, such as water, propylene glycol, liquid salts or other heat transfer fluids, for transferring the collected heat to where it is needed.

The window structure 22 is transparent to most of the energy carried by solar radiation, the wavelength range of which is typically between the ultraviolet light wavelength and the infrared light wavelength, with a distance between the window structure 22 and the collection surface 14 , about 1/4 inch. The window structure can be made of a glass material that is substantially transparent to most of the solar bandwidth selected. The window structure 22 seals around the collection surface and defines a vacuum gap between the collection surface 14 and the bottom surface of the window structure 22. In a particular embodiment, a window structure formed of glass has a thickness of approximately 1/16 inch or less. In order to most effectively transfer the solar bandwidth and to capture or retain heat inside the vacuum gap, and prevent the heat from dissipating into the surrounding atmosphere, if the aforementioned gap space is not vacuum, it is easy due to the convective movement of the air near the collector plate. Causes heat to dissipate into the surrounding atmosphere. Glass is a high density material compared to air. If the thickness of the glass exceeds 1/16 inch, the effect of solar radiation penetration is greatly weakened, making it less effective. In order to withstand atmospheric pressure, tempered glass may be used to form the window structure or the gap is filled with nitrogen to replace the vacuum environment. The window structure is enclosed in a frame 26. The configuration frame allows it to be easily snapped onto the body 12 for replacement. The frame should be heat-insulating, usually a good insulation material, preferably 92% or more to prevent heat from dissipating into the surrounding air. This makes it easier to raise the temperature of water or liquid to 680oF for power generation.

Provided below the body 12 is an insulation layer 28 disposed on the other surface opposite the collection surface 14 to prevent heat collected in the body 12 from dissipating into the surrounding air. The isolation layer 28 enhances the temperature of the body 12 and enhances the heat transfer efficiency of the solar energy by thermal insulation in the body 12. High quality insulation, preferably 92% or more, prevents heat from dissipating into the surrounding air. It is necessary to raise the temperature of water or liquid to a level of 680oF for power generation. The thickness of the barrier layer 28 depends on its configuration. Those skilled in the art will recognize that selecting the constituent materials of the isolation layer 28 requires consideration of the outdoor environment in which the solar collector 10 is located, including but not limited to factors such as heat, solar radiation, wind speed, rainfall, etc., numerous outdoor ratings. The insulation materials are suitable.

In one embodiment disclosed herein, the solar collector 12 has a black painted aluminum body that absorbs 95% of the incident solar energy and, therefore, is a particularly efficient solar energy collection system. Aluminum has high thermal conductivity and low cost, which is very cost effective and makes the system practical.

Referring to Fig. 2, in accordance with an exemplary manner of installing solar collector 10, solar collector 10 is mounted on a mounting structure 30 or a frame structure including upright support members 32. The support member 32 can be secured in concrete as noted by reference numeral 34, and the horizontal support member 36 is supported by the support member 32. The vertical member 38 extends upward from the horizontal support member 36 and is supported on the lower surface of the heat collector 10. Window structure 22 and isolation layer 28 are not shown in Figure 2 in order to avoid overcomplicating the illustration. Those skilled in the art will appreciate that upright support member 32, horizontal support member 36, vertical member 38 may be fabricated from a suitable material such as metal. In an array of such collectors, a pair of mounting structures 30 can be applied to each of the collectors 10. Although not required, the height of the support member is preferably about 4 feet for easy access and maintenance.

One of ordinary skill in the art will appreciate that the solar collector 10 illustrated in Figure 1 is movably mounted in one configuration to allow the solar collector 10 to track the movement of the sun and to absorb the planar solar energy collection surface. The orientation is oriented as orthogonal to the direction of solar radiation as possible. Such tracking methods and apparatus are well known in the art.

One of ordinary skill in the art will appreciate that the solar collector 10 of Figure 1 can also be used in applications other than power generation, such as heating domestic water, implementing home solar water heating, and commercial building heating systems. The solar collector 10 according to the present invention is shown in FIG.

According to the present creation, the solar collector 10 shown in Fig. 1 is most suitable for use in a power generation system. Figure 3 shows how solar collector 10 can be applied as an integral part of a solar power plant in accordance with the present creation.

The solar powered power generation system 40 includes a solar collector 10 as shown meaning. The solar collector 10 shown in the figures is a simplified cross-sectional view of a longer solar collector line. One of ordinary skill in the art will recognize that multiple solar collectors 10 can be configured in series to connect respective numbers of holes 20 of any number of solar collectors 10 through a conduit. The conduits for interconnecting the solar collectors 10 and connecting the solar collectors 10 to other components of the power generation system are covered by an isolation layer around them to maximize efficiency by reducing unnecessary heat losses.

The solar powered power generation system 40 includes a heat exchanger 42 for transferring heat in the heat transfer liquid circulating in the main circuit, the main circuit including the solar collector 10, the primary wire group 44 in the heat exchanger 42, Heat transfer liquid circulation pump 46. In a closed system, the pressure of the heat transfer liquid is such that the temperature of the liquid exceeds its boiling temperature at atmospheric pressure. Due to the high temperature, a pressurization system 41 is required to maintain the liquid in the liquid under pressure. The temperature of the heat transfer liquid can reach or exceed 680 °F (360 °C) between steaming. As previously mentioned, the heat transfer liquid can be water or other similar heat transfer liquid such as propylene glycol, liquid salts and the like. The storage tank 48 provides a heat transfer liquid that is replenished into the main circuit through the first valve 50 for compensating for the loss of the heat transfer liquid.

The heat exchanger 42 transfers heat collected from the primary wire group 44 to the secondary wire group 52 by the circulation of water. The heated water (e.g., to become steam) is supplied to a steam superheater 54, which is supplied with superheated steam by a steam section 56 in the steam superheater 54 to drive the power generating equipment. Steam superheater 54 is a low rating superheater that also includes a water section 58 and a burner section 60. The combustion unit 60 can drive the power plant during the night or cloudy period when the output energy converted by the collector 10 is not sufficient to drive the power generation system. In this case, it is used as an auxiliary boiler. Steam superheaters are known in the art and their design is conventional.

The steam output from the steam superheater 54 is supplied to the steam turbine 62 to drive the generator 64 to provide the power output of the power plant 40. The spent steam is sent to a condensate pump 66 and a condenser 68 and passed through a feed pump 70 to a deaerator 72, which are conventional in the art. The output of the degasser 72 is delivered to the secondary line set 52 of the heat exchanger 42 to complete the circulation of the secondary circuit.

The system in Figure 3 uses solar power to achieve a target efficiency of 50%. Under the same power output conditions, the cost of a solar power plant is expected to be less than 20% of the cost of a conventional coal-fired power plant. Considering the same power output, if the cost of a thermal power plant is lower than half the cost of a nuclear power plant, the cost of a solar power plant is 10% lower than that of a nuclear power plant. Because of the many regulatory constraints of nuclear power plants, the cycle of building a solar power plant is much shorter than the construction of a new nuclear power plant. This is a significant advantage, and saving fuel costs is another advantage.

Referring to Figure 4, there is shown another schematic diagram of a factory layout of a large solar power plant 80 in accordance with the present teachings.

The solar power plant 80 shown in FIG. 4 includes an array 82 formed of a plurality of solar collectors 10. Multiple solar collectors 10 can be placed on one continuous line, with the exception of corner turns. As mentioned earlier, the height can be about 4 feet, easy to access and maintain.

In order to generate electricity at 300 megawatts (MW), the total surface area of all of the collection faces 14 in array 82 should be about 300 acres, and the total area required for a typical power plant to perform a typical installation is about 600 acres.

The main circuit in solar power plant 80 includes an array 82, a temperature sensing The device 84, a second valve 86, a third valve 88, a primary line set (not shown) in the heat exchanger 90, a boosting device 91, a circulation pump 92 and a fourth valve 94. At system startup, whenever temperature sensor 84 indicates that the temperature of the heat exchange fluid in array 82 is below a set temperature value, third valve 88 is closed and fifth valve 96 is open, allowing heat exchange liquid to proceed in array 82. The cycle is reached until the set temperature value is reached, and at this point, the third valve 88 opens and the fifth valve closes. A heat exchange liquid tank 98 is passed through the sixth valve 100 for replenishing the lost heat exchange liquid. The function of the booster is to maintain the water or liquid still liquid when the temperature is above their boiling point.

During operation of the system, a secondary line set (not shown) of heat exchanger 90 provides steam to steam superheater 104, which has the same mode of operation as steam superheater 54 depicted in FIG. Steam is used to drive the turbine 106, which in turn drives the generator 108. The steam superheater is also used as an auxiliary boiler.

With 300 mu as an effective solar collection area, the entire power plant covers an area of about 600 acres. A 300 MW power plant requires about 3,600 gallons of cooling water per minute, but water can be recycled. A pool is provided for storing water.

The total amount of coal required for a 300 MW thermal power plant is around 150 tons per hour. According to the factory's 10-hour operation per day, such a factory consumes about 1,500 tons per day. The cost price is $50 per ton, and the average daily coal cost is around $75,000 per day. The annual coal cost is about $27,375,000. As a result, the cost of burning coal used in a 300 MW power plant can be saved by 90%, which is equivalent to $24,637,500 per year, and it is estimated that 10% of the currently used natural gas will be consumed. This assumption allows a 300 megawatt power plant to reduce the amount of carbon dioxide emitted into the atmosphere each year. To 1,500 tons × 90% × 365 days, equal to 492,750 tons.

While the embodiments and applications of the present invention have been shown and described, it will be apparent to those skilled in the Therefore, the scope of the appended claims should be construed as covering all changes and modifications of the true meaning and scope of the present invention. For example, a pressure relief valve may be added before and after the heat exchanger 90.

40‧‧‧Solar-driven power generation system

41‧‧‧Supercharged system

42‧‧‧ heat exchanger

44‧‧‧Primary line group

46‧‧‧heat transfer liquid circulation pump

48‧‧‧ storage tank

50‧‧‧First valve

52‧‧‧Secondary line group

54‧‧‧Steam superheater

56‧‧‧Steam heat exchange unit

58‧‧‧Water tank unit

60‧‧‧burning unit

62‧‧‧Steam turbine

64‧‧‧Generator

66‧‧‧Condensate pump

68‧‧‧Condenser

70‧‧‧ Feed pump

72‧‧‧Deaerator or air separator

Claims (18)

A solar collector comprising: a) a solid body having a length having a flat solar absorbing collection surface from a central portion of the solid body having a first thickness to a pair of opposing edge portions having a second thickness Each edge of the edge is gradually reduced in thickness, the pair of opposite edge portions defining the width of the body, the second thickness being smaller than the first thickness; b) one extending along the length of the body and extending completely through the body a hole in the body aligned with an axis at the central portion, wherein the hole is seamless to prevent leakage through the heat transfer liquid disposed through the hole of the solid body; c) The transparent glass window structure of the solar wavelength can be disposed at a distance from the collecting surface, and the window structure is sealed near the periphery of the collecting surface to define a closed gap space between the collecting surface and the bottom surface of the window structure, wherein the gap The space is filled with nitrogen to minimize heat transfer from the collection surface to the glazing structure, thereby reducing dissipation from the glass surface to the atmosphere Heat. The solar collector according to claim 1, wherein the solar collector is applied to a thermal power plant built on a land of 600 mu and having an output of less than 300 MW (megawatt), wherein the solar energy is occupied. The area of 600 acres of land is 1880 BTU or more per square foot per minute in summer. The solar collector of claim 1, wherein the flat solar absorption collecting surface is painted black or covered with a black anodized aluminum coating. According to the solar collector of claim 1, wherein the solar energy collection The collector is prepared by a press molding or casting method. The solar collector of claim 1, wherein the body of the solar collector is formed of metal aluminum. The solar collector of claim 1, wherein the window structure is made of glass, and an ultraviolet wavelength having energy or other wavelength of sunlight is transmitted through the glass. The solar collector of claim 1, wherein the window structure has a thickness of at most 1/16 of an inch to maximize the passage of sunlight. The solar collector of claim 1, wherein the first thickness in the central portion is between 2.5 and 3.0 inches. The solar collector of claim 1, wherein the second thickness of the pair of opposing edge portions is between 0.25 and 0.5 inches. The solar collector of claim 1, wherein the thickness value gradually decreases linearly from the first thickness to the second thickness. The solar collector of claim 1, wherein the gap space between the glazing structure and the bottom heat collecting aluminum plate is vacuumed, and the space is limited to 1/4 inch to achieve the best. Solar absorption effect. The solar collector of claim 1, wherein the body of the solar collector is sealed from the three sides with a high-efficiency insulating material having at least 92 in addition to the top of the glazing structure. % does not lose efficiency. The solar energy collector according to claim 1, wherein the solar thermal power plant system using the solar collector further comprises: a solar collector, an insulated pipe system, a water pump system, a heat exchanger, a supercharging device, and an auxiliary boiler. / Steam superheater, deaerator, condensing system and turbine generator system. The solar collector of claim 13, wherein the first thickness at the central portion is between 2.5 and 3.0 inches. The solar collector of claim 13, wherein the second thickness at a pair of opposing edge portions is between 0.25 and 0.5 ft. The solar collector of claim 13, wherein the thickness value from the first thickness to the second thickness is gradually decreasing linearly. The solar collector according to claim 13, wherein the gap space between the glazing structure and the bottom heat collecting aluminum plate is vacuum, and the gap width of the space is limited to 1/4 inch to achieve the best. Solar absorption effect. The solar collector according to claim 13, wherein the solar collector is applied to a thermal power plant built on a land of 600 mu and having an output of less than 300 MW (megawatt), wherein the solar power plant The area of 600 acres of land is 1880 BTU or more per square foot per minute in summer; the flat solar absorption collection surface is painted black or covered by a black anodized aluminum coating; the solar collector is compression molded Or a casting method; the body of the solar collector is made of metal aluminum; the window structure is made of glass, and the energy of ultraviolet wavelength or other wavelength of sunlight can pass through the glass; the thickness of the glass window structure is up to 1/16 inch. Or thinner to maximize the passage of sunlight; the first thickness at the central portion is between 2.5 and 3.0 inches; and the second thickness at the opposite edge portion is between 0.25 and 0.5 inches. The thickness value from the first thickness to the second thickness gradually decreases linearly; the gap between the glazing structure and the bottom collector aluminum plate The space is vacuum, the gap width of this space is limited to 1/4 inch to achieve the best solar absorption effect; in addition to the top of the glazing structure, the main body of the solar collector is sealed with high-efficiency insulation material from three sides. The insulation material has at least retained heat 92% does not lose efficiency.