Solar collector thermal performance test device

Abstract

This utility model discloses a solar collector thermal performance testing device, comprising: a test chamber, with cover plates rotatably mounted on both front sides via two stainless steel hinges, and multiple ventilation holes on the lower part of the inner wall on the right side; an LED solar simulator, fixedly installed on the top of the test chamber and connected to its interior; and a PLC controller, fixedly installed on the top left side of the test chamber. This utility model, through a series of structures, can accurately simulate the light intensity and ambient temperature under different regional and climatic conditions, thereby effectively and accurately reflecting the thermal performance changes of solar collectors under various operating conditions. This avoids significant deviations between test results and actual usage scenarios, facilitating the optimization and improvement of solar collector performance. Furthermore, it allows for convenient adjustment of the solar collector support platform's height according to different specifications of solar collectors, improving its flexibility and applicability.

Description

Technical Field

[0001] This utility model relates to the field of solar collector thermal performance testing technology, specifically to a solar collector thermal performance testing device. Background Technology

[0002] With the continuous development of solar energy utilization technology, solar collectors, as key equipment in solar energy utilization, directly affect the efficiency and reliability of solar energy utilization systems due to their thermal performance. Currently, existing testing equipment for evaluating the thermal performance of solar collectors has the following shortcomings:

[0003] The limited testing conditions make it difficult to accurately simulate the light intensity and ambient temperature under different regional and climatic conditions, resulting in significant deviations between the test results and actual usage scenarios. Furthermore, the test results fail to accurately reflect the changes in the thermal performance of solar collectors under various operating conditions, which is detrimental to the optimization and improvement of solar collector performance. In view of this, this application proposes a solar collector thermal performance testing device to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a testing device for the thermal performance of solar collectors to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a solar collector thermal performance testing device, comprising:

[0006] The test chamber has a cover plate mounted on both sides of the front side via two stainless steel hinges, and multiple ventilation holes are provided on the lower part of the inner wall on the right side.

[0007] The LED solar simulator is fixedly installed on the top of the test chamber and connected to its interior; the LED solar simulator is used to simulate different light intensities.

[0008] The PLC controller is fixedly installed on the top left side of the test chamber, and a temperature display is fixedly and electrically connected to its top.

[0009] The connecting flow temperature measuring components consist of two sets, which are respectively embedded and fixed on both sides of the test chamber and electrically connected to the PLC controller. The two sets of connecting flow temperature measuring components are used to connect to the inlet and outlet ends of the solar collector respectively, and are used to detect the inlet and outlet temperatures respectively, and transmit them to the PLC controller.

[0010] The hot air blower is embedded and fixed on the top left side of the test chamber and is electrically connected to the PLC controller;

[0011] The cold air blower is embedded and fixed on the top right side of the test chamber and is electrically connected to the PLC controller. The hot air blower and the cold air blower are located on the same side as each other and are located inside the test chamber.

[0012] The first temperature sensor is fixedly installed on the inner wall of the bottom of the test chamber and electrically connected to the PLC controller. The first temperature sensor is used to monitor the temperature inside the test chamber and transmit it to the PLC controller. The hot air fan and cold air fan are used to control the temperature inside the test chamber under the control of the PLC controller. The temperature display is used to display the temperature detected at three points under the control of the PLC controller.

[0013] A solar collector support platform is installed inside the test chamber;

[0014] The vertical guide lifting adjustment assembly is fixedly installed between the bottom of the solar collector support platform and the inner wall of the bottom of the test chamber, and is electrically connected to the PLC controller; the vertical guide lifting adjustment assembly is used to control the lifting and lowering adjustment of the solar collector support platform under the control of the PLC controller.

[0015] Preferably, the connecting flow temperature measuring assembly includes a connecting pipe, an explosion-proof hose, and a second temperature sensor. The two connecting pipes are respectively embedded and fixed on both sides of the test chamber, with the adjacent ends of the two connecting pipes extending into the test chamber. The second temperature sensor is fixedly installed on the top of the corresponding connecting pipe, with the detection end of the second temperature sensor extending into the corresponding connecting pipe. Both ends of the explosion-proof hose are provided with internal threaded connectors, and one end of the connecting pipe has an external thread that is screwed into the corresponding internal threaded connector. Both second temperature sensors are electrically connected to the PLC controller.

[0016] Preferably, the vertical guide lifting adjustment assembly includes four outer tubes, four inner rods, an electric telescopic rod, a laser rangefinder sensor, and a reference plate. The four outer tubes are rectangularly and fixedly connected to the bottom inner wall of the test chamber. The four inner rods are rectangularly and fixedly connected to the bottom of the solar collector support platform. The inner rods are slidably sleeved inside the corresponding outer tubes. The electric telescopic rod is fixedly installed on the bottom inner wall of the test chamber, and its extended end is fixedly connected to the bottom of the solar collector support platform. The reference plate is fixedly connected to the bottom of the solar collector support platform. The laser rangefinder sensor is located below the reference plate and is fixedly connected to the bottom inner wall of the test chamber. Both the electric telescopic rod and the laser rangefinder sensor are electrically connected to the PLC controller.

[0017] Preferably, a rectangular through hole is provided on the inner wall of the top of the test chamber, and the irradiation end of the LED solar simulator is located inside the rectangular through hole.

[0018] Preferably, a first magnet is embedded and fixed on the rear top of the cover plate, and two second magnets are embedded and fixed on the front top of the test chamber. The front side of the second magnet is attracted to the rear side of the corresponding first magnet, and a U-shaped handle is fixedly connected to the front side of the cover plate.

[0019] Preferably, stainless steel filters are fixedly installed on both sides of the hot air blower and both sides of the cold air blower.

[0020] Preferably, an anti-slip pad is adhered and fixed to the top of the solar collector support platform.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. By using the set test chamber, solar collector support platform, connecting flow temperature measuring components, PLC controller and temperature display, the temperature values ​​of the inlet and outlet are detected and displayed respectively. Personnel can judge the performance of the solar collector by observing the temperature difference between the inlet and outlet and making corresponding calculations.

[0023] 2. By combining the set PLC controller, first temperature sensor, hot air blower, cold air blower, PLC controller and LED solar simulator, it can accurately simulate the light intensity and ambient temperature under different regions and climate conditions. It can effectively and accurately reflect the thermal performance changes of solar collectors under various operating conditions, avoid the phenomenon of large deviation between test results and actual use scenarios, and promote the optimization and improvement of solar collector performance.

[0024] 3. By combining the solar collector support platform and the vertical guide lifting and adjustment components, the distance of the solar collector support platform can be easily adjusted according to different specifications of solar collectors, so as to ensure that the distance between it and the LED solar simulator is within the required distance, thereby improving the flexibility and applicability of use.

[0025] This invention, through a series of structures, can accurately simulate the light intensity and ambient temperature under different regions and climate conditions. This effectively and accurately reflects the changes in the thermal performance of solar collectors under various operating conditions, avoiding significant deviations between test results and actual usage scenarios. It facilitates the optimization and improvement of solar collector performance and allows for convenient adjustment of the solar collector support platform according to different specifications, improving its flexibility and applicability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the solar collector thermal performance testing device proposed in this utility model;

[0027] Figure 2 This is a cross-sectional structural schematic diagram of the solar collector thermal performance testing device proposed in this utility model;

[0028] Figure 3 This is a right-side structural schematic diagram of the solar collector thermal performance testing device proposed in this utility model.

[0029] In the diagram: 1. Test chamber; 101. Cover plate; 102. Vent hole; 103. Rectangular through hole; 2. LED solar simulator; 3. PLC controller; 301. Temperature display; 302. Hot air blower; 303. Cold air blower; 304. First temperature sensor; 4. Connecting pipe; 401. Explosion-proof hose; 402. Internal threaded connector; 403. Second temperature sensor; 5. Solar collector support platform; 501. Electric telescopic rod; 502. Outer pipe; 503. Inner rod; 504. Laser rangefinder sensor; 505. Reference plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1 to 3 As shown, the solar collector thermal performance testing device proposed in this embodiment includes:

[0032] The test chamber 1 has a cover plate 101 mounted on both sides of its front side via two stainless steel hinges, and multiple ventilation holes 102 are provided on the lower part of its right inner wall.

[0033] LED solar simulator 2 is fixedly installed on the top of test chamber 1 and connected to its interior; LED solar simulator 2 is used to simulate different light intensities;

[0034] The PLC controller 3 is fixedly installed on the top left side of the test chamber 1, and a temperature display 301 is fixedly connected to its top.

[0035] The connecting flow temperature measuring components consist of two sets, which are respectively embedded and fixed on both sides of the test chamber 1 and electrically connected to the PLC controller 3. The two sets of connecting flow temperature measuring components are used to connect to the inlet and outlet ends of the solar collector respectively, and are used to detect the inlet end temperature and the outlet end temperature respectively, and transmit them to the PLC controller 3.

[0036] The hot air blower 302 is embedded and fixed on the top left side of the test chamber 1 and is electrically connected to the PLC controller 3;

[0037] The air cooler 303 is embedded and fixed on the top right side of the test chamber 1 and is electrically connected to the PLC controller 3. The hot air blower 302 and the air cooler 303 are both outlets on the side closest to each other and are located inside the test chamber 1. The test chamber 1 has first mounting holes on both sides, and the hot air blower 302 and the air cooler 303 are respectively fixedly installed in the corresponding first mounting holes.

[0038] The first temperature sensor 304 is fixedly installed on the inner wall of the bottom of the test chamber 1 and electrically connected to the PLC controller 3. The first temperature sensor 304 is used to monitor the temperature inside the test chamber 1 and transmit it to the PLC controller 3. The hot air fan 302 and the cold air fan 303 are used to control the temperature inside the test chamber 1 under the control of the PLC controller 3. The temperature display 301 is used to display the temperature detected at three points under the control of the PLC controller 3.

[0039] The solar collector support platform 5 is installed inside the test chamber 1;

[0040] The vertical guide lifting adjustment assembly is fixedly installed between the bottom of the solar collector support platform 5 and the bottom inner wall of the test chamber 1, and is electrically connected to the PLC controller 3; the vertical guide lifting adjustment assembly is used to control the lifting and lowering adjustment of the solar collector support platform 5 under the control of the PLC controller 3.

[0041] In this embodiment, a rectangular through hole 103 is provided on the inner wall of the top of the test chamber 1, and the irradiation end of the LED solar simulator 2 is located in the rectangular through hole 103; a first magnet is embedded and fixed on the top rear side of the cover plate 101, and two second magnets are embedded and fixed on the top front side of the test chamber 1. The front side of the second magnet is attracted to the rear side of the corresponding first magnet. A U-shaped handle is fixedly connected to the front side of the cover plate 101, which has the effect of magnetically fixing the cover plate 101; stainless steel filters are fixedly installed on both sides of the hot air blower 302 and both sides of the cold air blower 303; and an anti-slip pad is glued and fixed to the top of the solar collector support platform 5.

[0042] Furthermore, such as Figure 1 and 2 As shown, the connecting flow temperature measuring assembly includes a connecting pipe 4, an explosion-proof hose 401, and a second temperature sensor 403. The two connecting pipes 4 are respectively embedded and fixed on both sides of the test chamber 1. The near ends of the two connecting pipes 4 extend into the test chamber 1. The second temperature sensor 403 is fixedly installed on the top of the corresponding connecting pipe 4. The detection end of the second temperature sensor 403 extends into the corresponding connecting pipe 4. Both ends of the explosion-proof hose 401 are provided with internal threaded connectors 402. One end of the connecting pipe 4 has an external thread on the outside and is threadedly screwed into the corresponding internal threaded connector 402. Both second temperature sensors 403 are electrically connected to the PLC controller 3.

[0043] In this embodiment, the test chamber 1 has a second mounting hole on both sides, and the inner side of the second mounting hole is fixedly connected to the outer side of the corresponding connecting pipe 4.

[0044] In this implementation scheme, the connecting pipe 4, the explosion-proof hose 401, and the second temperature sensor 403 work together. The two internally threaded connectors 402 located on the inner side are used to connect to the inlet and outlet of the solar collector, respectively. The connecting pipe 4 on the left side is used to connect to an external input pipe for liquid or gas medium to enter, and the connecting pipe 4 on the right side is used for the medium flowing out of the solar collector. The two second temperature sensors 403 are used to detect the temperature value at the inlet and the temperature value at the outlet, respectively, and convert them into standard electrical signals and transmit them to the PLC controller 3. The PLC controller 3 converts the received standard electrical signals into actual temperature values ​​through analog-to-digital conversion and transmits them to the temperature display 301 for display. Personnel can judge the performance of the solar collector by observing the temperature difference between the inlet and outlet and making corresponding calculations.

[0045] Furthermore, such as Figure 2 As shown, the vertical guide lifting adjustment assembly includes four outer tubes 502, four inner rods 503, an electric telescopic rod 501, a laser rangefinder sensor 504, and a reference plate 505. The four outer tubes 502 are rectangularly and fixedly connected to the bottom inner wall of the test chamber 1. The four inner rods 503 are rectangularly and fixedly connected to the bottom of the solar collector support platform 5. The inner rods 503 are slidably sleeved inside the corresponding outer tubes 502. The electric telescopic rod 501 is fixedly installed on the bottom inner wall of the test chamber 1. The extended end of the electric telescopic rod 501 is fixedly connected to the bottom of the solar collector support platform 5. The reference plate 505 is fixedly connected to the bottom of the solar collector support platform 5. The laser rangefinder sensor 504 is located below the reference plate 505 and is fixedly connected to the bottom inner wall of the test chamber 1. Both the electric telescopic rod 501 and the laser rangefinder sensor 504 are electrically connected to the PLC controller 3.

[0046] In this implementation scheme, four outer tubes 502, four inner rods 503, an electric telescopic rod 501, a laser rangefinder 504, and a reference plate 505 work together. The PLC controller 3 pre-sets the spacing values ​​corresponding to different specifications of solar collectors. After the solar collector is placed on top of the solar collector support platform 5, the operator runs the program sequence number corresponding to the spacing value using the PLC controller 3. The PLC controller 3 controls the electric telescopic rod 501 to start and drive the solar collector support platform 5 to rise and fall. The solar collector support platform 5 drives the four inner rods 503 to slide vertically within their respective outer tubes 502. The solar collector support platform 5 drives the reference plate 505 to rise and fall. The laser rangefinder 504 detects the distance between itself and the reference plate 505, converts it into a standard electrical signal, and transmits it to the PLC controller 3. The PLC controller 3 converts the received standard electrical signal into an actual spacing value through analog-to-digital conversion. When the set spacing value is reached, the PLC controller 3 controls the electric telescopic rod 501 to automatically close, achieving convenient adjustment of the distance of the solar collector support platform 5 according to different specifications of solar collectors.

[0047] It should be noted that the PLC controller 3 preferably adopts a Siemens S7-200SMART programmable controller with an integrated analog input module, which can receive the standard electrical signals output by the first temperature sensor 304 and the second temperature sensor 403, and convert them into actual temperature values ​​through the integrated analog-to-digital conversion function; the first temperature sensor 304 and the second temperature sensor 403 are preferably Pt100 platinum resistance temperature sensors.

[0048] The preferred LED solar simulator is model 7IS0503A. This solar simulator is a solar light simulation light source for scientific research and various experimental sites. After spectral fitting, light mixing and homogenization, it forms a solar simulator that meets the requirements of Class 3A and can simulate different light intensities.

[0049] The electrical connection between the hot air blower 302, the cold air blower 303, and the electric telescopic rod 501 and the PLC controller 3 is achieved through wires and servo drivers. The preferred servo driver is the Siemens V90 servo driver, which is a commonly used driver for controlling motors and electric actuators in conjunction with Siemens programmable controllers, and meets the requirements of the programmable controller to directly control the hot air blower 302, the cold air blower 303, and the electric telescopic rod 501.

[0050] Regarding power supply, given that the solar collector thermal performance test site is an indoor testing environment similar to a production plant, the power supply measures are sufficient and the conditions are met. All electrical components of this device are connected to the on-site mains power and are connected to the power input interfaces of each device through conventional power distribution devices such as circuit breakers, contactors, and power modules (not marked in the figure), forming a complete power supply circuit. This power supply scheme is a conventional power distribution method for industrial equipment and is a mature and well-known technical means, so it will not be described in detail here.

[0051] The method of using this embodiment is as follows: When using the solar collector thermal performance testing device, place the solar collector on the top of the solar collector support platform 5, connect the two internal threaded joints 402 on the inner side to the inlet and outlet of the solar collector respectively, the connecting pipe 4 on the left is used to connect to the external input pipe for liquid or gas medium to enter, and the connecting pipe 4 on the right is used for the medium flowing out of the solar collector, and the two second temperature sensors 403 are used to detect the temperature value at the inlet and the temperature value at the outlet respectively, convert them into standard electrical signals and transmit them to the PLC controller 3, the PLC controller 3 converts the received standard electrical signals into actual temperature values ​​through analog-to-digital conversion and transmits them to the temperature display 301 for display, and the personnel judge the performance of the solar collector by observing the temperature difference at the inlet and outlet positions and making corresponding calculations.

[0052] When simulating performance at different temperatures, the PLC controller 3 is used to preset the corresponding temperature values ​​for starting the hot air blower 302 and the cold air blower 303. The first temperature sensor 304 detects the temperature inside the test chamber 1, converts it into a standard electrical signal, and transmits it to the PLC controller 3. The PLC controller 3 converts the received standard electrical signal into an actual temperature value through analog-to-digital conversion and transmits it to the temperature display 301 for display. When this temperature value is lower than the preset temperature value, the PLC controller 3 controls the hot air blower 302 to turn on, blowing hot air into the test chamber 1 for heating until the preset value is reached and then turning it off. When the preset value is reached, the PLC controller 3 controls the air cooler 303 to turn on, blowing hot air into the test chamber 1 for cooling, accurately simulating the temperature environment of different regions. When simulating the light intensity, the personnel directly adjust the LED solar simulator 2 accordingly to simulate different light intensities. This achieves the effect of conveniently and accurately simulating the light intensity and ambient temperature under different regions and climate conditions. It can effectively and accurately reflect the thermal performance changes of solar collectors under various operating conditions, avoiding the phenomenon that the test results deviate greatly from the actual use scenario, which is conducive to promoting the performance optimization and improvement of solar collectors.

[0053] The PLC controller 3 is pre-set with different spacing values ​​for solar collectors of different specifications. After the solar collector is placed on top of the solar collector support platform 5, the operator runs the program number corresponding to the spacing value using the PLC controller 3. The PLC controller 3 controls the electric telescopic rod 501 to start and drive the solar collector support platform 5 to rise and fall. The solar collector support platform 5 drives the four inner rods 503 to slide vertically within the corresponding outer tubes 502. The solar collector support platform 5 drives the reference plate 505 to rise and fall. The laser distance sensor 504 detects the distance between itself and the reference plate 505, converts it into a standard electrical signal, and transmits it to the PLC controller 3. The PLC controller 3 converts the received standard electrical signal into the actual spacing value through analog-to-digital conversion. When the set spacing value is reached, the PLC controller 3 controls the electric telescopic rod 501 to automatically close. This allows for convenient adjustment of the distance of the solar collector support platform 5 according to different specifications of solar collectors, ensuring that the distance between it and the LED solar simulator 2 is within the required distance, thus improving the flexibility and applicability of use.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A solar collector thermal performance testing device, comprising a test chamber (1), characterized in that: include: The test chamber (1) has a cover plate (101) mounted on both sides of its front side via two stainless steel hinges, and multiple ventilation holes (102) are provided on the lower part of its right inner wall. LED solar simulator (2) is fixedly installed on the top of the test chamber (1) and connected to its interior; The PLC controller (3) is fixedly installed on the top left side of the test chamber (1), and a temperature display (301) is fixedly connected to its top. Connect the current-pass temperature measurement component, which consists of two sets and is respectively embedded and fixed on both sides of the test chamber (1), and electrically connected to the PLC controller (3); The hot air blower (302) is embedded and fixed on the top left side of the test chamber (1) and electrically connected to the PLC controller (3); The air cooler (303) is embedded and fixed on the top right side of the test chamber (1) and electrically connected to the PLC controller (3). The hot air blower (302) and the air cooler (303) are located on the same side of the test chamber (1) and have outlets on the same side. The first temperature sensor (304) is fixedly installed on the inner wall of the bottom of the test chamber (1) and electrically connected to the PLC controller (3); A solar collector support platform (5) is installed inside the test chamber (1); The vertical guide lifting adjustment assembly is fixedly installed between the bottom of the solar collector support platform (5) and the bottom inner wall of the test chamber (1), and is electrically connected to the PLC controller (3).

2. The solar collector thermal performance testing device according to claim 1, characterized in that: The connecting flow temperature measurement assembly includes a connecting pipe (4), an explosion-proof hose (401), and a second temperature sensor (403). The two connecting pipes (4) are respectively embedded and fixed on both sides of the test chamber (1). The two connecting pipes (4) extend into the test chamber (1) at their closest ends. The second temperature sensor (403) is fixedly installed on the top of the corresponding connecting pipe (4). The detection end of the second temperature sensor (403) extends into the corresponding connecting pipe (4). Both ends of the explosion-proof hose (401) are provided with internal threaded connectors (402). One end of the connecting pipe (4) has an external thread on its outer side and is threadedly connected to the corresponding internal threaded connector (402). Both second temperature sensors (403) are electrically connected to the PLC controller (3).

3. The solar collector thermal performance testing device according to claim 1, characterized in that: The vertical guide lifting adjustment assembly includes four outer tubes (502), four inner rods (503), an electric telescopic rod (501), a laser rangefinder sensor (504), and a reference plate (505). The four outer tubes (502) are rectangularly and fixedly connected to the bottom inner wall of the test chamber (1). The four inner rods (503) are rectangularly and fixedly connected to the bottom of the solar collector support platform (5). The inner rods (503) are slidably sleeved inside the corresponding outer tubes (502). The electric telescopic rod (501) is fixedly... The electric telescopic rod (501) is fixedly installed on the bottom inner wall of the test chamber (1). The extended end of the electric telescopic rod (501) is fixedly connected to the bottom of the solar collector support platform (5). The reference plate (505) is fixedly connected to the bottom of the solar collector support platform (5). The laser range sensor (504) is located below the reference plate (505) and is fixedly connected to the bottom inner wall of the test chamber (1). The electric telescopic rod (501) and the laser range sensor (504) are both electrically connected to the PLC controller (3).

4. The solar collector thermal performance testing device according to claim 1, characterized in that: A rectangular through hole (103) is provided on the inner wall of the top of the test chamber (1), and the irradiation end of the LED solar simulator (2) is located in the rectangular through hole (103).

5. The solar collector thermal performance testing device according to claim 1, characterized in that: The top rear side of the cover plate (101) is fitted with a first magnet, and the top front side of the test chamber (1) is fitted with two second magnets. The front side of the second magnet is attracted to the rear side of the corresponding first magnet. The front side of the cover plate (101) is fixedly connected with a U-shaped handle.

6. The solar collector thermal performance testing device according to claim 1, characterized in that: Stainless steel filters are fixedly installed on both sides of the hot air blower (302) and both sides of the cold air blower (303).

7. The solar collector thermal performance testing device according to claim 1, characterized in that: The top of the solar collector support platform (5) is glued and fixed with an anti-slip pad.

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