A solar heat absorption structure and a solar thermal power generation device having the same

Abstract

The utility model relates to a solar thermal absorption structure and a solar thermal power generation device having the same, belonging to the technical field of new energy devices, including: a heat collecting tube and a transparent plate, a first packaging plate, a photovoltaic panel, a second packaging plate, a heat conducting plate and a heat collecting panel that are bonded and connected in sequence from top to bottom, and the heat collecting tube is bonded to the bottom surface of the heat collecting panel by a high thermal conductivity adhesive. The utility model utilizes the photovoltaic panel to efficiently absorb solar energy, and at the same time, utilizes the medium flowing in the heat collecting panel and the heat collecting tube to efficiently absorb solar thermal energy. On the one hand, it can simultaneously absorb solar energy and solar thermal energy to improve the solar energy absorption and conversion efficiency, and on the other hand, it can reduce the working temperature of the photovoltaic panel to prevent the temperature from being too high and reducing the light absorption efficiency of the photovoltaic panel.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy devices, and in particular to a solar light heat absorption structure. Background Art

[0002] With the rapid development of society, energy consumption has increased rapidly. As one of the three major areas of energy consumption, buildings are the main responsible area for carbon emissions. Using clean energy to power buildings and reducing carbon emissions caused by building energy consumption has become an important development direction in the future. The centralized heating and power supply of existing buildings are mostly achieved by burning coal. During the combustion of coal in boilers, a large amount of toxic and harmful pollutants such as carbon dioxide, sulfide, and nitrogen oxides will be produced, which has poor energy-saving and environmental protection performance.

[0003] In order to solve the above technical problems, solar energy is being widely promoted and applied. As a clean energy, solar energy has the advantages of wide distribution, low cost, and mature technology development, but it is also intermittent and volatile, and cannot meet the energy consumption needs of buildings at night and in extreme weather. Among solar energy utilization technologies, solar thermal utilization technology is mature and low-cost, but it is greatly affected by climatic conditions; solar photovoltaic utilization can convert solar energy into high-quality thermal energy, but the power generation efficiency of photovoltaic cells is affected by the temperature of the cell. When the temperature rises by 1°C, the power generation efficiency of photovoltaic cells will decrease by 0.3%-0.5%. As can be seen from the above, the solar energy utilization efficiency of a single solar photovoltaic power generation mechanism or a solar thermal collection mechanism is low. Therefore, how to use clean energy to build an efficient and stable cogeneration mechanism to ensure the building's demand for electricity and thermal energy is an urgent problem that technicians in this field need to solve.

[0004] In order to meet the energy needs of buildings, many research institutions have developed heating or power supply mechanisms using solar energy, but there are problems such as the mechanism is greatly affected by climate, unstable energy supply effect, and low mechanism efficiency. Patent ZL202222051612.6 discloses a "vacuum heat exchange PVT heating mechanism", which adopts self-circulation and uses the phase change of working fluid to extract the heat generated by photovoltaic modules during the power generation process, reduce the temperature of photovoltaic modules and produce hot water, but the mechanism lacks auxiliary heating devices and cannot adapt to areas with cold or changeable climates; Patent ZL202310763439.9 discloses an "air energy and solar heating mechanism", which reduces the energy consumption of the mechanism through the mutual cooperation between solar collector panels and air source heat pumps, uses air source heat pumps to assist in heating, shortens the time of hot water supply, and meets the user's rapid demand for hot water, but the solar collector mechanism of the mechanism only provides hot water for users, and the energy storage mechanism has only a single water tank, which is greatly affected by climate and cannot meet all the needs of users.

[0005] Therefore, how to design a solar thermal absorption and conversion system with high efficiency, stable solar thermal supply and able to meet the daily thermal and electrical energy needs of buildings is an urgent problem that needs to be solved by technical personnel in this field. Utility Model Content

[0006] The utility model provides a solar heat absorption structure, which solves the technical problems that the existing solar energy conversion efficiency is high, there are many unstable factors and it cannot meet the daily heat and electric energy required by buildings.

[0007] The utility model provides a technical solution to the above technical problems as follows: a solar thermal absorption structure, comprising: a heat collecting tube and a transparent plate, a first packaging plate, a photovoltaic panel, a second packaging plate, a heat conducting plate and a heat collecting plate bonded in sequence from top to bottom, wherein the heat collecting tube is bonded to the bottom surface of the heat collecting plate by a high thermal conductivity adhesive.

[0008] The beneficial effects of the utility model are: utilizing photovoltaic panels to efficiently absorb solar energy, and at the same time utilizing the medium flowing in the collector plates and collector tubes to efficiently absorb solar thermal energy, which can simultaneously absorb solar energy and solar thermal energy to improve the solar energy absorption and conversion efficiency, and can reduce the operating temperature of the photovoltaic panels on the other hand to prevent excessive temperature from reducing the light absorption efficiency of the photovoltaic panels.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the heat collecting tubes are arranged in an S shape.

[0011] The above further beneficial effects are: the S-shaped distribution of the heat collecting tube can expand the contact area between the circulating medium in the heat collecting tube and the heat collecting plate, improve the solar thermal energy absorption efficiency, and reduce the temperature effect on the performance of the photovoltaic panel and the heat conducting plate.

[0012] Furthermore, it also includes an insulation layer, the top surface of the insulation layer is provided with an insulation groove and the top surface corresponding to the outer peripheral side of the insulation groove is bonded to the bottom surface of the heat collecting plate; the heat collecting tube and the high thermal conductivity adhesive are both placed in the insulation groove.

[0013] A further beneficial effect of the above method is that placing the heat collecting tube and the high thermal conductivity adhesive in the thermal insulation groove can effectively prevent the ineffective diffusion of the medium heat in the heat collecting tube and improve the heat conversion rate.

[0014] In addition, a solar thermal power cogeneration device is provided, comprising the solar thermal absorption structure, an electric energy recovery mechanism and a heat energy recovery mechanism, wherein the electric energy recovery mechanism comprises an inverter and a battery, wherein the inverter and the battery are electrically connected, the inverter is electrically connected to the photovoltaic panel and the heat conduction plate respectively, and the battery is electrically connected to an external electrical load; the heat energy recovery mechanism comprises a hot water storage tank, a first circulation pump and a first valve, wherein the water inlet and the water outlet of the hot water storage tank are connected to the water outlet and the water inlet of the heat collection pipe respectively through a heat collection outlet pipe and a heat collection return pipe; the first circulation pump is installed on the heat collection outlet pipe; and the first valve is installed on the heat collection return pipe.

[0015] The above method has the following further beneficial effects: the electric energy converted by the photovoltaic panels and the heat conducting plates is first stored in the battery, and then the water in the heat storage tank is circulated and exchanged with the water in the heat collecting tube to absorb the heat energy, so that the solar energy and the solar heat energy can be recovered simultaneously, and the light absorption efficiency of the photovoltaic panels and the heat conducting plates can be avoided from being reduced due to excessively high temperature.

[0016] Furthermore, it also includes a domestic hot water supply mechanism, which includes a first three-way valve, an auxiliary water heater, a hot water supply pump and a first temperature sensor, the water inlet of the first three-way valve is connected to the water outlet of the hot water storage tank through a first hot water supply pipe; the water outlet and water inlet of the auxiliary water heater and the hot water supply pump are connected in series in sequence through a second hot water supply pipe, the water inlet of the auxiliary water heater is connected to the first water outlet of the first three-way valve through a third hot water supply pipe, and the water outlet of the hot water supply pump is connected to the water inlet of the domestic hot water supply end through a fourth hot water supply pipe; the first temperature sensor is fixed on the hot water storage tank and its sensing probe extends into the hot water storage tank.

[0017] The above method has the further beneficial effect of first using the sensing probe of the first temperature sensor to sense the water temperature in the heat storage tank, and then turning on or off the auxiliary water heater according to the pre-set hot water temperature, so as to provide hot water of different temperatures to meet the personalized needs of users.

[0018] Furthermore, it also includes a heating hot water supply mechanism, which includes a second three-way valve, a second valve, a second circulation pump, a third three-way valve and a third valve, the first water inlet of the second three-way valve is connected with the second water outlet of the first three-way valve through a first heating water pipe, and its water outlet is connected with the water inlet of the heating hot water supply end through a second heating water pipe; the second valve is installed on the first heating water pipe; the water inlet of the second circulation pump is connected with the water outlet of the heating hot water supply end through a first return water pipe; the water inlet of the third three-way valve is connected with the water outlet of the second circulation pump through a second return water pipe, and its first water outlet is connected with the return water port of the heat storage tank through a third return water pipe; the third valve is installed on the third return water pipe.

[0019] A further beneficial effect of the above-mentioned method is: the first temperature sensor is used to sense the temperature in the heat storage tank in real time. When the temperature in the heat storage tank meets the heating temperature requirement, the hot water in the heat storage tank is directly introduced into the heating terminal through the water inlet of the first three-way valve, the second water outlet of the first three-way valve, the first water inlet of the second three-way valve and the water outlet of the second three-way valve, thereby continuously providing hot water supply to the heating terminal.

[0020] Furthermore, the heating hot water supply mechanism also includes an air source heat pump, a fourth valve, a third circulation pump, a fifth valve and a sixth valve. The water inlet and outlet of the air source heat pump are connected with the water outlet and outlet of the heat storage tank respectively through the heat pump water inlet pipe and the heat pump water outlet pipe; the fourth valve is installed on the heat pump water inlet pipe; the third circulation pump is installed on the heat pump water outlet pipe; the second water inlet of the second three-way valve is connected with the water outlet of the air source heat pump through the third heating water pipe; the second water outlet of the third three-way valve is connected with the air source heat pump through the fourth reheating water pipe; the fifth valve is installed on the third heating water pipe; the sixth valve is installed on the fourth reheating water pipe.

[0021] A further beneficial effect of the above-mentioned method is: using the first temperature sensor to sense the temperature in the heat storage tank in real time, when the hot water temperature in the heat storage tank cannot meet the heating temperature requirement, turning on the air source heat pump, first passing the water in the heat storage tank into the air source heat pump, and then using the air source heat pump to increase the water temperature, thereby providing hot water that meets the temperature requirements for the heating supply end.

[0022] Furthermore, it also includes a second temperature sensor and a third temperature sensor, the second temperature sensor is fixed on the heat collection water outlet pipe and its sensing probe extends into the heat collection water outlet pipe; the third temperature sensor is fixed on the first warming water pipe and its sensing probe extends into the first warming water pipe.

[0023] Furthermore, it also includes a water replenishment mechanism, which includes a water replenishment tank, a filter and a water replenishment pump. The water replenishment tank, the filter, the water replenishment pump and the water outlet and water inlet of the hot water storage tank are connected in series in sequence through a water replenishment pipe.

[0024] A further beneficial effect of the above is that the water loss in the hot water storage tank can be continuously replenished by using the water replenishment tank, the filter and the water replenishment pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the internal structure of a solar heat absorption structure of the utility model;

[0026] Figure 2 The utility model discloses a solar energy combined heat and power device.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Collector tube, 2. Transparent plate, 3. First packaging plate, 4. Photovoltaic panel, 5. Second packaging plate, 6. Heat conducting plate, 7. Collector plate, 8. High thermal conductivity adhesive, 9. Insulation layer, 91. Insulation groove, 10. Inverter, 11. Battery, 12. Electric load, 13. Hot water storage tank, 14. First circulation pump, 15. First valve, 16. First three-way valve, 17. Auxiliary water heater, 18. Hot water supply pump, 19. First temperature sensor, 20. Life Hot water supply end, 21. second three-way valve, 22. second circulation pump, 23. third three-way valve, 24. heating hot water supply end, 25. air source heat pump, 26. second valve, 27. third circulation pump, 28. second temperature sensor, 29. third temperature sensor, 210. third valve, 211. fourth valve, 212. fifth valve, 213. sixth valve, 30. water supply tank, 31. filter, 32. water supply pump, 33. third valve. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] like Figure 1 As shown, a solar heat absorption structure includes: a heat collecting tube 1 and a transparent plate 2, a first packaging plate 3, a photovoltaic panel 4, a second packaging plate 5, a heat conducting plate 6 and a heat collecting plate 7 which are bonded in sequence from top to bottom. The heat collecting tube 1 is bonded to the bottom surface of the heat collecting plate 7 by a high thermal conductivity adhesive 8.

[0031] Specifically, the heat collecting tubes 1 are arranged in an S shape.

[0032] In some specific embodiments, an insulation layer 9 may also be included, the top surface of the insulation layer 9 is provided with an insulation groove 91 and the top surface of the outer peripheral side of the insulation groove 91 is bonded to the bottom surface of the heat collecting plate 7; the heat collecting tube 1 and the high thermal conductivity adhesive 8 are both placed in the insulation groove 91.

[0033] In addition, a solar thermal power cogeneration device is provided, including a solar heat absorption structure, an electric energy recovery mechanism and a heat energy recovery mechanism, the electric energy recovery mechanism includes an inverter 10 and a battery 11, the inverter 10 and the battery 11 are electrically connected, the inverter 10 is electrically connected to the photovoltaic panel 4 and the heat conducting plate 6 respectively, and the battery 11 is electrically connected to an external electrical load 12; the heat energy recovery mechanism includes a hot water storage tank 13, a first circulation pump 14 and a first valve 15, the water inlet and the water outlet of the hot water storage tank 13 are connected to the water outlet and the water inlet of the heat collecting pipe 1 through a heat collecting outlet pipe and a heat collecting return pipe respectively; the first circulation pump 14 is installed on the heat collecting outlet pipe; the first valve 15 is installed on the heat collecting return pipe.

[0034] In some specific embodiments, a domestic hot water supply mechanism may also be included, which includes a first three-way valve 16, an auxiliary water heater 17, a hot water supply pump 18 and a first temperature sensor 19. The water inlet of the first three-way valve 16 is connected to the water outlet of the hot water storage tank 13 through a first hot water supply pipe; the water outlets and water inlets of the auxiliary water heater 17 and the hot water supply pump 18 are connected in series in sequence through a second hot water supply pipe, the water inlet of the auxiliary water heater 17 is connected to the first water outlet of the first three-way valve 16 through a third hot water supply pipe, and the water outlet of the hot water supply pump 18 is connected to the water inlet of the domestic hot water supply end 20 through a fourth hot water supply pipe; the first temperature sensor 19 is fixed on the hot water storage tank 13 and its sensing probe extends into the hot water storage tank 13.

[0035] In some specific embodiments, a heating hot water supply mechanism may also be included, and the heating hot water supply mechanism includes a second three-way valve 21, a second valve 26, a second circulation pump 22, a third three-way valve 23 and a third valve 210, wherein the first water inlet of the second three-way valve 21 is connected to the second water outlet of the first three-way valve 16 through the first heating water pipe, and its water outlet is connected to the water inlet of the heating hot water supply end 24 through the second heating water pipe; the second valve 26 is installed on the first heating water pipe; the water inlet of the second circulation pump 22 is connected to the water outlet of the heating hot water supply end 24 through the first reheating water pipe; the water inlet of the third three-way valve 23 is connected to the water outlet of the second circulation pump 22 through the second reheating water pipe, and its first water outlet is connected to the return water port of the heat storage tank 13 through the third reheating water pipe; the third valve 210 is installed on the third reheating water pipe.

[0036] In some specific embodiments, the heating hot water supply mechanism may also include an air source heat pump 25, a fourth valve 211, a third circulation pump 27, a fifth valve 212 and a sixth valve 213. The water inlet and outlet of the air source heat pump 25 are connected to the water outlet and outlet of the heat storage tank 13 respectively through the heat pump water inlet pipe and the heat pump water outlet pipe; the fourth valve 211 is installed on the heat pump water inlet pipe; the third circulation pump 27 is installed on the heat pump water outlet pipe; the second water inlet of the second three-way valve 21 is connected to the water outlet of the air source heat pump 25 through the third heating water pipe; the second water outlet of the third three-way valve 23 is connected to the air source heat pump 25 through the fourth reheating water pipe; the fifth valve 212 is installed on the third heating water pipe; the sixth valve 213 is installed on the fourth reheating water pipe.

[0037] In some specific embodiments, a second temperature sensor 28 and a third temperature sensor 29 may also be included. The second temperature sensor 28 is fixed on the heat collection outlet pipe and its sensing probe extends into the heat collection outlet pipe; the third temperature sensor 29 is fixed on the first reheating water pipe and its sensing probe extends into the first reheating water pipe.

[0038] In some specific embodiments, a water replenishment mechanism may also be included, which includes a water replenishment tank 30, a filter 31 and a water replenishment pump 32. The water outlet and water inlet of the water replenishment tank 30, the filter 31, the water replenishment pump 32 and the hot water storage tank 13 are connected in series in sequence through a water replenishment pipe.

[0039] In some specific embodiments, the water replenishment mechanism may further include a third valve 33 , which is installed on the water replenishment pipe between the water replenishment tank 30 and the filter 31 .

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solar heat absorption structure, characterized in that: include: A heat collecting tube (1) and a transparent plate (2), a first packaging plate (3), a photovoltaic panel (4), a second packaging plate (5), a heat conducting plate (6) and a heat collecting plate (7) which are bonded in sequence from top to bottom, wherein the heat collecting tube (1) is bonded to the bottom surface of the heat collecting plate (7) by a high thermal conductivity adhesive (8).

2. A solar heat absorption structure according to claim 1, characterized in that: The heat collecting tubes (1) are arranged in an S shape.

3. A solar heat absorption structure according to claim 1, characterized in that: It also includes a heat-insulating layer (9), the top surface of the heat-insulating layer (9) is provided with a heat-insulating groove (91), and the top surface corresponding to the outer peripheral side of the heat-insulating groove (91) is bonded to the bottom surface of the heat-collecting plate (7); the heat-collecting tube (1) and the high thermal conductivity adhesive (8) are both placed in the heat-insulating groove (91).

4. A solar heat and power cogeneration device, characterized in that: It comprises the solar thermal absorption structure, electric energy recovery mechanism and heat energy recovery mechanism as described in any one of claims 1 to 3, the electric energy recovery mechanism comprises an inverter (10) and a battery (11), the inverter (10) and the battery (11) are electrically connected, the inverter (10) is electrically connected to the photovoltaic panel (4) and the heat conducting plate (6) respectively, and the battery (11) is electrically connected to an external electrical load (12); the heat energy recovery mechanism comprises a hot water storage tank (13), a first circulation pump (14) and a first valve (15), the water inlet and the water outlet of the hot water storage tank (13) are connected to the water outlet and the water inlet of the heat collecting pipe (1) respectively through a heat collecting outlet pipe and a heat collecting return pipe; the first circulation pump (14) is installed on the heat collecting outlet pipe; the first valve (15) is installed on the heat collecting return pipe.

5. A solar thermal power cogeneration device according to claim 4, characterized in that: The invention also comprises a domestic hot water supply mechanism, which comprises a first three-way valve (16), an auxiliary water heater (17), a hot water supply pump (18) and a first temperature sensor (19); the water inlet of the first three-way valve (16) is connected to the water outlet of the hot water storage tank (13) through a first hot water supply pipe; the water outlet and water inlet of the auxiliary water heater (17) and the hot water supply pump (18) are connected in series in sequence through a second hot water supply pipe; the water inlet of the auxiliary water heater (17) is connected to the first water outlet of the first three-way valve (16) through a third hot water supply pipe; the water outlet of the hot water supply pump (18) is connected to the water inlet of the domestic hot water supply end (20) through a fourth hot water supply pipe; and the first temperature sensor (19) is fixed on the hot water storage tank (13) and its sensing probe extends into the hot water storage tank (13).

6. A solar thermal power cogeneration device according to claim 5, characterized in that: The invention also comprises a heating hot water supply mechanism, which comprises a second three-way valve (21), a second valve (26), a second circulation pump (22), a third three-way valve (23) and a third valve (210), wherein the first water inlet of the second three-way valve (21) is connected to the second water outlet of the first three-way valve (16) through a first heating water pipe, and the water outlet thereof is connected to the water inlet of the heating hot water supply end (24) through a second heating water pipe; the second valve (26) is installed on the first heating water pipe; the water inlet of the second circulation pump (22) is connected to the water outlet of the heating hot water supply end (24) through a first reheating water pipe; the water inlet of the third three-way valve (23) is connected to the water outlet of the second circulation pump (22) through a second reheating water pipe, and the first water outlet thereof is connected to the water return port of the hot water storage tank (13) through a third reheating water pipe; and the third valve (210) is installed on the third reheating water pipe.

7. A solar thermal power cogeneration device according to claim 6, characterized in that: The heating hot water supply mechanism also includes an air source heat pump (25), a fourth valve (211), a third circulation pump (27), a fifth valve (212) and a sixth valve (213); the water inlet and the water outlet of the air source heat pump (25) are respectively connected to the water outlet and the water outlet of the heat storage tank (13) through a heat pump water inlet pipe and a heat pump water outlet pipe; the fourth valve (211) is installed on the heat pump water inlet pipe; the third circulation pump (27) is installed on the heat pump water outlet pipe; the second water inlet of the second three-way valve (21) is connected to the water outlet of the air source heat pump (25) through a third heating water pipe; the second water outlet of the third three-way valve (23) is connected to the air source heat pump (25) through a fourth reheating water pipe; the fifth valve (212) is installed on the third heating water pipe; and the sixth valve (213) is installed on the fourth reheating water pipe.

8. A solar thermal power cogeneration device according to claim 7, characterized in that: It also includes a second temperature sensor (28) and a third temperature sensor (29), wherein the second temperature sensor (28) is fixed on the heat collection water outlet pipe and its sensing probe extends into the heat collection water outlet pipe; and the third temperature sensor (29) is fixed on the first reheating water pipe and its sensing probe extends into the first reheating water pipe.

9. A solar thermal power cogeneration device according to claim 4, characterized in that: It also comprises a water replenishment mechanism, which comprises a water replenishment tank (30), a filter (31) and a water replenishment pump (32), wherein the water outlet and water inlet of the water replenishment tank (30), the filter (31), the water replenishment pump (32) and the hot water storage tank (13) are connected in series in sequence through a water replenishment pipe.

10. A solar thermal power cogeneration device according to claim 9, characterized in that: The water replenishment mechanism further comprises a third valve (33), and the third valve (33) is installed on the water replenishment pipe between the water replenishment tank (30) and the filter (31).

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