A test device for photovoltaic and photo-thermal products

Abstract

The utility model provides a kind of photovoltaic photo-thermal product's experimental testing device, it can reliably simulate real environment, both can satisfy photo-thermal test, also can realize photoelectricity test alone, while can satisfy the mixed test of photo-thermal and photoelectricity, improve test efficiency.It includes: a test equipment, it includes top plate, four surrounding plates, bottom plate, test equipment is in closed state, forms closed space under test state;And fixed support, for placing the PVT product to be measured;Fixed support is arranged in test equipment, top plate is provided with a window in the direct upper side of fixed support, window is provided with high-transmittance glass, high-transmittance glass is provided with hernia lamp illumination system, hernia lamp illumination system is used to simulate sunlight;One air inlet, one air outlet are provided on the four surrounding plates of test equipment, air inlet is connected with air inlet pipeline, air outlet is connected with air outlet pipeline, air inlet pipeline is provided with frequency conversion fan.

Description

Technical Field

[0001] This utility model relates to the technical field of photovoltaic and photothermal technology, specifically to a testing device for photovoltaic and photothermal products. Background Technology

[0002] The performance of products manufactured using photovoltaic power generation, photoelectric conversion, and photothermal recovery and reuse needs to be tested using experimental testing equipment. Existing testing equipment either tests the heat collection separately, or it tests the photoelectric conversion or the photovoltaic power generation. Currently, there is no complete testing machine that can test photovoltaic, photothermal, and heat collection and reuse.

[0003] Therefore, there is an urgent need to develop an integrated testing device suitable for photovoltaic and solar thermal systems as well as heat collection and reuse, so that photovoltaic and solar thermal products can be fully and reliably tested. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a testing device for photovoltaic and photothermal products that can reliably simulate real-world environments. It can satisfy both photothermal and photoelectric testing, as well as mixed photothermal and photoelectric testing, thereby improving testing efficiency.

[0005] A testing device for photovoltaic and solar thermal products, characterized in that it comprises: A test device, which includes a top plate, four surrounding plates and a bottom plate, is in a closed state during the test, forming a closed space; And a mounting bracket, which is used to place the PVT product to be tested; The test equipment is equipped with a fixed support, and a window is provided on the top plate directly above the fixed support. The window is made of high-transparency glass, and a xenon lamp illumination system is provided on the high-transparency glass to simulate sunlight. The test equipment is provided with an air inlet and an air outlet on its four sides. The air inlet is connected to an air inlet pipe, and the air outlet is connected to an air outlet pipe. The air inlet pipe is equipped with a variable frequency fan. The test equipment is also equipped with a temperature control mechanism that simulates ambient temperature. The temperature control mechanism is used to adjust the temperature of the test equipment in real time so that the temperature inside the test equipment is a set constant temperature. The test equipment is equipped with a liquid fluid circulation detection device with a medium inlet and a medium outlet.

[0006] Its further features are: The test equipment is an environmental test chamber or test room. One side panel of the surrounding panel is equipped with a door with a sealing function. The bottom plate, the surrounding panels, and the top plate of the test equipment are all equipped with heat preservation function. The xenon lamp illumination system is obtained by arranging several groups of xenon lamps. The xenon lamp illumination system transmits light energy into the constant temperature test equipment through high-transmittance glass. The xenon lamps simulate the full spectrum of sunlight, including visible and invisible light, with wavelengths from 200 to 1400 nm. The liquid fluid circulation detection device includes an insulated pipe, a pressure sensor, a flow sensor, a velocity sensor, a drive pump, an automatic vent valve, and an expansion storage device. The expansion storage device is located on the periphery of the test equipment. The outlet of the expansion storage device is connected to the test equipment through a first insulated pipe. The first insulated pipe is equipped with a drive pump and a velocity sensor, and then has a medium inlet. The medium inlet is used to connect to the medium inlet of the PVT product to be tested. The first insulated pipe is also equipped with an automatic vent valve. The medium outlet of the second insulated pipe is connected to the medium outlet of the PVT product to be tested. The second insulated pipe integrates a flow sensor and a pressure sensor. The end of the second insulated pipe is connected to the outside of the test equipment and connected to the return port of the expansion storage device. The first insulated pipe is equipped with an inlet temperature sensor at the position corresponding to the medium inlet, and the second insulated pipe is equipped with an outlet temperature sensor at the position corresponding to the medium outlet, which facilitates accurate calculation of heat exchange energy. The drive pump is located on the outer periphery of the test equipment to ensure that the test equipment is not affected by excessive heat sources, thus ensuring that the test is conducted accurately and reliably. The air inlet and air outlet pipes are connected by transition pipes and test equipment to form a closed pipe structure. A variable frequency fan is installed in the area of ​​the air inlet pipe corresponding to the air inlet. The variable frequency fan blows air into the test equipment through the air inlet, which keeps the air volume in the entire space basically stable. This ensures that heat energy is not carried out of the test equipment due to air exchange, and that the energy in the entire test equipment can be reliably calculated. The air inlet and air outlet are located on opposite sides of the enclosure. A wind speed sensor is arranged at the air inlet corresponding to the inner side of the test equipment, which generates a controllable wind speed in the photovoltaic panel area of ​​the PVT to be tested. The temperature control mechanism with simulated ambient temperature is specifically an air conditioning heat pump system, which places the main unit on the periphery of the test equipment and the heat exchange part inside the test equipment, and the heat or cold generated by it can be reliably calculated. The test equipment is equipped with a temperature / humidity sensor, which transmits data to the outside via wireless or wired means. The experimental equipment is also equipped with a full-band radiometer / radiometer for real-time data monitoring.

[0007] With this invention, during testing, the PVT product to be tested is placed on a fixed support and a photovoltaic power tester is installed simultaneously. The entire test equipment is then sealed and maintained at a set temperature. A xenon lamp illumination system simulates natural light, which is projected onto the photovoltaic panels of the PVT product through high-transmittance glass. A variable frequency fan then generates natural wind, and corresponding sensors monitor wind speed, temperature, humidity, and irradiance (light intensity and irradiance) in real time. A liquid fluid circulation detection device completes the heat exchange process for the PVT product. This invention reliably simulates the real environment, satisfying both photothermal (heat collection efficiency) and photoelectric (photovoltaic conversion efficiency) tests, as well as mixed photothermal and photoelectric tests, thus improving testing efficiency. Attached Figure Description

[0008] Figure 1 This is a schematic block diagram of the structure of this utility model; The names corresponding to the serial numbers in the diagram are as follows: Test equipment 10, top plate 11, window 111, enclosure 12, bottom plate 13, air inlet 13, air outlet 14, fixed bracket 20, high-transparency glass 30, xenon lamp illumination system 40, air inlet duct 50, air outlet duct 60, variable frequency fan 70, temperature control mechanism simulating ambient temperature 80, main unit 81, heat exchange part 82, liquid fluid circulation detection device 90, pressure sensor 91, flow sensor 92, flow velocity sensor 93, drive pump 94, automatic exhaust valve 95, expansion storage device 96, first insulation pipe 97, second insulation pipe 98, PVT product 100, transition pipe 110; 1. Inlet temperature sensor; 2. Outlet temperature sensor; 3. Wind speed sensor; 4. Temperature / humidity sensor; 5. Full-band radiometer / radiometer; 6. Photovoltaic power meter. Detailed Implementation

[0009] A testing device for photovoltaic and solar thermal products, see Figure 1 It includes a test device 10 and a fixing bracket 20; A test device 10 includes a top plate 11, four surrounding plates 12, and a bottom plate 13. In practice, the test device has a three-dimensional space of about 6 cubic meters and is equipped with a door for placing and removing PVT products. The mounting bracket 20 is used to place the PVT product 100 to be tested; A fixed support 20 is arranged inside the test equipment 10. A window 111 is provided on the top plate 11 directly above the fixed support. The window 111 is provided with high-transparency glass 30. A xenon lamp illumination system 40 is provided on the high-transparency glass 30. The xenon lamp illumination system 40 is used to simulate sunlight. The test equipment 10 has an air inlet 13 and an air outlet 14 on the surrounding plate 12. The air inlet 13 is connected to an air inlet pipe 50, and the air outlet 14 is connected to an air outlet pipe 60. The air inlet pipe 50 is equipped with a variable frequency fan 70. The test equipment 10 is also equipped with a temperature control mechanism 80 that simulates ambient temperature. The temperature control mechanism 80 is used to adjust the temperature of the test equipment 10 in real time so that the temperature inside the test equipment 10 is a set constant temperature. The test equipment 10 is equipped with a liquid fluid circulation detection device 90, which has a medium inlet and a medium outlet.

[0010] In practice, the test equipment 10 is an environmental test chamber or test room. One side panel of the surrounding panel 12 is equipped with a door with a sealing function. The bottom plate 13, the surrounding panels 12, and the top plate 11 of the test equipment 10 all have heat preservation functions. When the space required for the test equipment 10 is not large, the test equipment can be made into an environmental test chamber, with its four sides of the surrounding panels 12, top panel 11, and bottom panel 13 made of insulated panels. When the experimental equipment requires a large space, the experimental equipment 10 is made into a laboratory. The bottom of the laboratory is dug into a pit and then an insulation layer is made with insulation material.

[0011] In practice, the xenon lamp illumination system 40 is obtained by arranging several groups of xenon lamps. The xenon lamp illumination system 40 transmits light energy into the constant temperature test equipment 10 through the high-transmittance glass 30. The xenon lamps simulate the full spectrum of sunlight, including visible and invisible light, with wavelengths from 200 to 1400 nm.

[0012] In specific implementation, the liquid fluid circulation detection device 90 includes an insulated pipe, a pressure sensor 91, a flow sensor 92, a velocity sensor 93, a drive pump 94, an automatic exhaust valve 95, and an expansion storage device 96. The expansion storage device 96 is located on the periphery of the test equipment 10. The outlet of the expansion storage device 96 is connected to the test equipment 10 through a first insulated pipe 97. The first insulated pipe 97 is equipped with a drive pump 94 and a velocity sensor 93, and then a medium inlet is provided. The medium inlet is used to connect to the medium inlet of the PVT product 100 to be tested. The first insulated pipe 97 is also equipped with an automatic exhaust valve 95. The medium outlet of the second insulated pipe 98 is connected to the medium outlet of the PVT product 100 to be tested. The second insulated pipe 98 integrates a flow sensor 92 and a pressure sensor 91. The end of the second insulated pipe 98 is connected to the outside of the test equipment 10 and connected to the return port of the expansion storage device 96. The first insulated pipe 97 is equipped with an inlet temperature sensor 1 at the position corresponding to the medium inlet, and the second insulated pipe 98 is equipped with an outlet temperature sensor 2 at the position corresponding to the medium outlet, which facilitates accurate calculation of heat exchange energy. The drive pump 94 is located on the outer periphery of the test equipment 10 to ensure that the test equipment 10 is not affected by too much heat source interference, and to ensure that the test is carried out accurately and reliably. The air inlet duct 50 and the air outlet duct 60 are connected by the transition duct 110 and the test equipment 10 to form a closed duct structure. The air inlet duct 50 is equipped with a variable frequency fan 70 in the area corresponding to the air inlet 13. The variable frequency fan 70 blows air into the test equipment 10 through the air inlet 13, which keeps the air volume in the entire space basically stable, so that the heat energy will not be carried out of the test equipment 10 due to air exchange, and ensures that the energy in the entire test equipment 10 can be reliably calculated. Air inlet 13 and air outlet 14 are located on the opposing enclosure 12. Air inlet 13 is equipped with a wind speed sensor 3 on the inner side of the test equipment 10, which generates a controllable wind speed in the photovoltaic panel area of ​​the PVT product 100 to be tested. The temperature control mechanism 80 that simulates ambient temperature is specifically an air conditioning heat pump system, which sets the main unit 81 on the periphery of the test equipment and places the heat exchange part 82 inside the test equipment 10. The heat or cold generated by it is reliably calculated. The test equipment 10 is equipped with a temperature / humidity sensor 4, which transmits data to the outside via wireless or wired means. The test equipment 10 is also equipped with a full-band radiometer / radiometer 5 for real-time data monitoring; It also includes a photovoltaic power tester 6.

[0013] In specific implementation, the high-transparency glass 30 is specifically ultra-white high-transparency glass; the variable frequency fan 70 is specifically a variable frequency fan with a wind speed sensor.

[0014] Its working principle is as follows: During testing, the PVT product 100 to be tested is placed on the fixed bracket 20, and the photovoltaic power tester 6 is installed simultaneously. Then, the entire test equipment 10 is sealed, and the entire test equipment 10 is maintained at a set temperature by the temperature control mechanism 80 that simulates the ambient temperature. Then, the xenon lamp illumination system 40 simulates natural light, and the light shines through the high-transmittance glass onto the photovoltaic panel of the PVT product 100 in the sealed space. Then, natural wind is generated by the variable frequency fan 70. The wind speed, temperature, humidity, and irradiance (light intensity, irradiance) are monitored in real time by corresponding sensors, and the system is monitored by liquid fluid circulation. The testing device 90 pairs of PVT products 100 complete the heat exchange operation. The liquid fluid circulation testing device is equipped with flow rate, velocity, outlet temperature, inlet temperature, and circulation pump to detect the speed, flow rate, and temperature of liquid flow and to calculate the temperature difference. The liquid fluid circulation testing device is equipped with an expansion storage device on the outside to adapt to the thermal expansion and contraction of the liquid temperature rise and to increase the heat collection and heat conduction liquid capacity when the heat collection is large. It can reliably simulate the real environment, which can meet the testing of photothermal (heat collection efficiency), can realize photoelectric (photoelectric conversion efficiency) testing alone, and can also meet the mixed testing of photothermal and photoelectric, thus improving the testing efficiency.

[0015] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0016] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A testing device for photovoltaic and solar thermal products, characterized in that, It includes: The testing equipment includes a top plate, four surrounding plates, and a bottom plate. Under testing conditions, the testing equipment is in a closed state, forming a closed space. And a mounting bracket, which is used to place the PVT product to be tested; The test equipment is equipped with a fixed support, and a window is provided on the top plate directly above the fixed support. The window is made of high-transparency glass, and a xenon lamp illumination system is provided on the high-transparency glass to simulate sunlight. The test equipment is provided with an air inlet and an air outlet on its four sides. The air inlet is connected to an air inlet pipe, and the air outlet is connected to an air outlet pipe. The air inlet pipe is equipped with a variable frequency fan. The test equipment is also equipped with a temperature control mechanism that simulates ambient temperature. The temperature control mechanism is used to adjust the temperature of the test equipment in real time so that the temperature inside the test equipment is a set constant temperature. The test equipment is equipped with a liquid fluid circulation detection device with a medium inlet and a medium outlet.

2. The testing device for photovoltaic and solar thermal products according to claim 1, characterized in that: The test equipment is an environmental test chamber or laboratory. One side panel of the surrounding wall is equipped with a door with a sealing function. The bottom plate, the surrounding wall, and the top plate of the test equipment are all equipped with heat preservation functions.

3. The testing device for photovoltaic and solar thermal products according to claim 1, characterized in that: The xenon lamp illumination system is obtained by arranging several groups of xenon lamps. The xenon lamp illumination system transmits light energy into the constant temperature test equipment through high-transmittance glass. The xenon lamps simulate the full spectrum of sunlight, including visible and invisible light, with wavelengths from 200 to 1400 nm.

4. The testing device for photovoltaic and solar thermal products according to claim 1, characterized in that: The liquid fluid circulation detection device includes an insulated pipe, a pressure sensor, a flow sensor, a velocity sensor, a drive pump, an automatic vent valve, and an expansion storage device. The expansion storage device is located on the periphery of the test equipment. The outlet of the expansion storage device is connected to the test equipment through a first insulated pipe. The first insulated pipe is equipped with a drive pump and a velocity sensor, and then has a medium inlet. The medium inlet is used to connect to the medium inlet of the PVT product to be tested. The first insulated pipe is also equipped with an automatic vent valve. The medium outlet of the second insulated pipe is connected to the medium outlet of the PVT product to be tested. The second insulated pipe integrates a flow sensor and a pressure sensor. The end of the second insulated pipe is connected to the outside of the test equipment and to the return port of the expansion storage device.

5. The testing device for photovoltaic and solar thermal products according to claim 4, characterized in that: The first insulated pipe is equipped with an inlet temperature sensor at the position corresponding to the medium inlet, and the second insulated pipe is equipped with an outlet temperature sensor at the position corresponding to the medium outlet.

6. The testing device for photovoltaic and solar thermal products according to claim 5, characterized in that: The drive pump is located on the outer periphery of the test equipment.

7. The testing device for photovoltaic and solar thermal products according to claim 1, characterized in that: The air inlet duct and air outlet duct are connected by a transition duct and the test equipment to form a closed duct structure. A variable frequency fan is installed in the area of ​​the air inlet duct corresponding to the air inlet, and the variable frequency fan blows air into the test equipment through the air inlet.

8. The testing device for photovoltaic and solar thermal products according to claim 7, characterized in that: The air inlet and air outlet are located on opposite sides of the enclosure, and a wind speed sensor is arranged at the air inlet corresponding to the inner side of the test equipment.

9. The testing device for photovoltaic and solar thermal products according to claim 1, characterized in that: The temperature control mechanism that simulates ambient temperature is specifically an air conditioning heat pump system, which places the main unit on the periphery of the test equipment and the heat exchange part inside the test equipment.

10. The testing device for photovoltaic and solar thermal products according to claim 1, characterized in that: The test equipment is equipped with a temperature / humidity sensor, which transmits data to the outside via wireless or wired means. The experimental equipment is also equipped with a full-band radiometer / radiation meter.

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