Efficient trapezoidal deflector type solar air collection heat-storing device
Technical field
The utility model relates to new energy development and utilizes the field, relates in particular to a kind of efficient trapezoidal deflector type solar air collection heat-storing device.Be mainly used in fields such as building and heating, agricultural product drying, desalinization, solar refrigeration.
Background technology
Solar energy air heat collector be solar energy at field key in application parts such as building and heating, agricultural product drying, desalinization and solar refrigerations, its subject matter that faces is how further to improve its collecting efficiency.At present, the solar energy air heat collector that generally uses has two kinds of plate, vacuum tube types.Flat plate collector mainly is made up of transparent cover plate, absorber plate, insulation shell three parts, and vacuum tube type mainly is made of inlet, outlet pipeline and several vacuum heat collection pipes that are set up in parallel.All there is the shortcoming of following three aspects in which kind of version no matter: the first, and the heat collector area of dissipation is big, the intensification path is short, causes the heat collector outlet temperature on the low side; The second, the hot-air in the heat collector is that nature flows, and circulation rate is slower, does not possess the outlet temperature regulatory function; The 3rd, heat collector does not possess the heat accumulation function yet, can not work under night or adverse weather condition.
The example of existing solar energy air heat collector as the utility model of number of patent application 88221059.9, is characterized as at transparent cover plate and is that the transparent honeycomb structure has been installed between the hot body, to reduce the heat loss of cover plate.The utility model of application number 200620022423.4 and for example, feature is has the air return flow line, has increased the path that air heats in heat collector.Above-mentioned patent working all has certain effect to the thermal efficiency that improves solar thermal collector, but their outlet temperature is lower, and the internal heat air circulation is slow excessively, does not also possess outlet temperature control and heat accumulation function.
The utility model content
1, technical problem to be solved:
The purpose of this utility model is the weak point at above-mentioned prior art existence, and a kind of efficient trapezoidal deflector type solar air collection heat-storing device that a kind of thermal loss is littler, once the circulation intensification is bigger, collecting efficiency is higher, outlet temperature is adjustable and have the heat accumulation function is provided.
2, technical scheme:
To achieve these goals, the utility model is achieved by following technical proposals.The utility model comprises transparent cover plate 2, outer heat-insulation layer 7, and outer heat-insulation layer 7 is made of adiabatic resin plate, it is characterized in that: also comprise economic benefits and social benefits heater composition and heat storage units; The economic benefits and social benefits heater comprises that first imitates the heater and the second effect heater; Be provided with the economic benefits and social benefits heater in the bottom of transparent cover plate 2, imitate the heater bottom second and be provided with heat storage units, transparent cover plate 2 is encapsulated in economic benefits and social benefits heater and heat storage units in the outer heat-insulation layer 7, is provided with air inlet 1 and air outlet 14 on outer heat-insulation layer 7.
It is vacuum heat collection pipe 3 that first of described economic benefits and social benefits heater is imitated heater, adopt the vacuum interlayer structure, skin is the high-boron-silicon glass pipe, the internal layer endothermic tube scribbles the copper tube of coating for selective absorption for the surface, the open at both ends of endothermic tube and the two ends of stretching out glass tube respectively, interface seals by seal; One end of endothermic tube is inserted on the adiabatic resin plate and links to each other with cold air air inlet 1, and the other end is inserted on the rectangle support 5 and links to each other with the first effect heater air outlet 12; Air outlet 12 is arranged on the rectangle support 5; The connecting portion of vacuum heat collection pipe and air inlet 1, rectangle support seals by seal.
It is trapezoidal absorber plate 4 that second of described economic benefits and social benefits heater is imitated heater, it is fixed on the bearing 10 that adiabatic resin plate stretches out outward, sealing between former and later two sides of trapezoidal absorber plate 4 and the outer heat-insulation layer 7, the side on the right side and rectangle support 5 sealings, the side on the left side and 7 blow-by of outer heat-insulation layer; First imitates heater and second imitates heater by shape support 5 UNICOMs, and first imitates heater air outlet 12 links by the rectangle support 5 and the second effect heater air inlet 11; Second imitates heater air inlet 11 is arranged on the rectangle support 5.
The material selection galvanized sheet of trapezoidal absorber plate 4, its sunny slope is coated with solar selective coat, and its coating material is selected for use and is NiCrO
xN
YOr TiO
YN
x
Described heat storage units is made up of rectangular metal cavity 13, and inside cavity is equipped with cylindrical heat storage can 6, is connected by augmentation of heat transfer fin with holes between the heat storage can 6, and heat storage can 6 is placed side by side between the base plate of rectangular metal cavity 13 and outer heat-insulation layer 7.
In the described heat storage can 6 the low temperature heat accumulating is arranged, the low temperature heat accumulating can be selected paraffin or sal glauberi for use.
Trapezoidal absorber plate 4, rectangular metal cavity 13 are divided into three airtight passages with whole heat collector; The topmost airtight passage is to have the transparent cover plate 2 of honeycomb and the airtight passage between the trapezoidal absorber plate 4; Middle airtight passage is the airtight passage between trapezoidal absorber plate 4 and the rectangular metal cavity 13; The foot airtight passage is the heat accumulation passage of rectangular metal cavity 13 inside; And the ratio of three channel thickness of upper, middle and lower is 2: 1: 2.
Transparent cover plate 2 is by transparent sunlight board and rectangle glass tube 15 are formed its inner honeycomb of formation in the middle of the sunlight board about rectangle glass tube 15 is positioned at up and down.
14 places are placed with blower fan 8 at air outlet.
3, beneficial effect:
Absorber plate of the present utility model adopts trapezium structure, can increase collector area on the one hand, make the air that enters heat collector produce disturbance, promote the heat exchange between air and the absorber plate, on the other hand, trapezoidal absorber plate is divided into two airtight heat tunnels along thickness direction with heat collector cavity, has prolonged to add hot path.
Cylindrical heat storage can of the present utility model, low-temperature phase-change material is equipped with in its inside, is connected by augmentation of heat transfer fin with holes between the cylindrical heat storage can.Can control the maximum temperature of trapezoidal absorber plate on the one hand, plate Wen Buhui heats up too high, dwindles the temperature difference of heat collector inside and external environment condition, thereby reduces thermal loss.On the other hand, heat accumulating can discharge heat accumulation under night or adverse weather condition, prolonged the service time of heat collector.
Description of drawings
Fig. 1 is for adorning structural representation of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
The B-B cutaway view of Fig. 3 Fig. 1;
Fig. 4 is that the C of Fig. 3 is to figure;
Fig. 5 is the honeycomb schematic diagram that the rectangle glass tube constitutes;
Fig. 6 is the structural representation of vacuum heat collection pipe in the utility model.
The specific embodiment
Shown in Fig. 1-6,1 is that air inlet, 2 is that transparent cover plate, 3 is that vacuum heat collection pipe, 4 is that trapezoidal absorber plate, 5 is that rectangle support, 6 is that cylindrical heat storage can, 7 is that outer heat-insulation layer, 8 is that blower fan, 9 is that rivet, 10 is that bearing, 11 is that the second effect heater air inlet, 12 is that the first effect heater air outlet, 13 is that rectangular metal cavity, 14 is that air outlet, 15 is the rectangle glass tube.
As Fig. 1, the utility model comprises outer heat-insulation layer 7, transparent cover plate 2, economic benefits and social benefits heater and heat storage units.
Outer heat-insulation layer 7 of the present utility model is made of adiabatic resin plate, double playing a supportive role.
As Fig. 1, Fig. 5, transparent cover plate 2 has the rectangle honeycomb, by transparent sunlight board and rectangle glass tube 15 are formed its inner honeycomb of formation in the middle of the sunlight board about rectangle glass tube 15 is positioned at up and down.
Be provided with the economic benefits and social benefits heater in the bottom of transparent cover plate 2, the economic benefits and social benefits heater comprises that first imitates the heater and the second effect heater.
As Fig. 2, the first effect heater is a vacuum heat collection pipe 3, adopts the vacuum interlayer structure, skin is the high-boron-silicon glass pipe, the internal layer endothermic tube is the surperficial copper tube that scribbles coating for selective absorption, the open at both ends of endothermic tube and the two ends of stretching out glass tube respectively, and interface seals by seal; One end of endothermic tube be inserted on the adiabatic resin plate be arranged on outer heat-insulation layer 7 on cold air air inlet 1 link to each other, the other end is inserted on the rectangle support 5 with first and imitates heater air outlet 12 and link to each other; Vacuum heat collection pipe 3 seals by seal with the connecting portion of air inlet 1, rectangle support 5.
As Fig. 1, Fig. 2, Fig. 3, the second effect heater is trapezoidal absorber plate 4, be fixed on the bearing 10 that adiabatic resin plate stretches out outward by rivet 9, the material selection galvanized sheet of trapezoidal absorber plate 4, its sunny slope is coated with solar selective coat, coating material can be selected for use and be NiCrOxNY, TiOYNx etc., sealing (as shown in Figure 3) between former and later two sides of trapezoidal absorber plate 4 and the outer heat-insulation layer 7, the side on the right side and rectangle support 5 sealings, the side on the left side and outer heat-insulation layer 7 blow-by (as shown in Figure 1).
First imitates heater and second imitates heater by rectangle support 5 UNICOMs, and first imitates heater air outlet 12 links by the rectangle support 5 and the second effect heater air inlet 11.Rectangle support 5 is also played a supporting role.
Imitate the heater bottom second and be provided with heat storage units.
Heat storage units is made up of rectangular metal cavity 13, in rectangular metal cavity 13 inside cylindrical heat storage can 6 is housed, the low temperature heat accumulating is arranged in the heat storage can 6, the low temperature heat accumulating can be selected paraffin or sal glauberi for use, connected by augmentation of heat transfer fin with holes between the heat storage can 6, heat storage can 6 is placed side by side between the base plate of rectangular metal cavity 13 and outer heat-insulation layer 7.
Air inlet 1 and air outlet 14 are positioned at heat-insulation layer 7 the same sides, and air inlet 1 is positioned at apart from 1/5 place, external insulation layer 7 top, and air outlet 14 is positioned at apart from 1/5 place, external insulation layer 7 bottom.The second effect heater air inlet 11 is positioned at apart from 2/5 place, rectangle support 5 tops, the first effect heater air outlet 12 is positioned at apart from 1/5 place, rectangle support 5 tops.
14 places are placed with blower fan 8 at air outlet, and its power supply is provided by solar panel.Be mainly used in and quicken flowing of the interior hot-air of heat collector, regulate outlet air temperature, and hot-air is transported to required place.
Transparent cover plate 2 is encapsulated in economic benefits and social benefits heater and heat storage units in the outer heat-insulation layer 7.
Trapezoidal absorber plate 4, rectangular metal cavity 13, the utility model is divided into three airtight passages, the topmost airtight passage is the airtight passage that has between the transparent cover plate 2 trapezoidal absorber plates 4 of honeycomb, middle airtight passage is the airtight passage between trapezoidal absorber plate 4 and the rectangular metal cavity 13, the foot airtight passage is the heat accumulation passage of rectangular metal cavity 13 inside, and the ratio of three channel thickness of upper, middle and lower is 2: 1: 2.
The running of air in the utility model is as follows: cold air enters vacuum heat collection pipe 3 by air inlet 1 and carries out the heating first time, after air after the intensification enters rectangle support 5 from the first effect heater air outlet 12, the opaco air flow channel that enters between trapezoidal absorber plate 4 and the rectangular metal cavity 13 after the sunny slope air flow channel that enters trapezoidal absorber plate 4 by the second effect heater air inlet 11 carries out heating for the second time again heats for the third time, gas after the heating enters air outlet 14 after entering cylindrical heat storage can 6 heat exchange of heat storage units, is delivered to the place that needs hot-air after being sucked by blower fan 8.
The utility model can increase and decrease the quantity of vacuum heat collection pipe according to actual conditions, also can regulate the temperature in exit according to actual needs, the heat that is stored in the heat collector can be at needs with being to discharge, need be with the place of solar heat air thereby go for the solar heating, solar energy drying of different situations and other.