Heat pump simulation test system and heat pump simulation laboratory

Abstract

The utility model discloses a kind of heat pump simulation test system and heat pump simulation laboratory, heat pump simulation test system includes the refrigerant circuit of evaporator inside;The inlet side and outlet side of the evaporator are connected with the refrigerant side inlet and refrigerant side outlet of multiple photo-thermal collectors parallelly respectively, and the water side inlet and water side outlet of all the photo-thermal collectors are communicated with water storage device;The refrigerant side inlet of all the photo-thermal collectors is matched with first throttling device setting.Therefore, the number of photo-thermal collector is flexibly adjusted by the opening and closing of first throttling device, so that the influence of the number change of photo-thermal collector on the overall performance of system is conveniently studied, without shutdown disassembly, shorten test cycle, reduce test cost, improve test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, and in particular to a heat pump simulation testing system and a heat pump simulation laboratory. Background Technology

[0002] In existing technologies, the solar thermal direct expansion-air source heat pump system, which combines photovoltaic thermal (PVT) technology and heat pump technology, has attracted widespread attention in the building energy supply field due to its high efficiency and energy-saving characteristics. However, the solar thermal collection of the solar thermal direct expansion-air source heat pump is instantaneous, and solar irradiance is intermittent and fluctuating. In actual operation, it is difficult to test and evaluate the system's performance under constant operating conditions. Therefore, it is difficult to test the performance of the solar thermal direct expansion-air source heat pump based on the actual light environment, and simulation testing systems are needed.

[0003] Traditional simulation testing systems rely heavily on on-site installation of solar thermal collectors, which are greatly affected by weather conditions and have long testing cycles. Furthermore, traditional simulation testing systems typically use a fixed number of solar thermal collectors, making it impossible to flexibly adjust the number of solar thermal collectors to study their impact on the overall system performance. Utility Model Content

[0004] This invention provides a heat pump simulation test system and a heat pump simulation laboratory to solve the problem that existing simulation test systems cannot flexibly adjust the number of solar thermal collectors.

[0005] The technical solution of this utility model is a heat pump simulation test system, which includes a refrigerant circuit containing an evaporator; the inlet side and outlet side of the evaporator are respectively connected in parallel to the refrigerant side inlet and refrigerant side outlet of multiple solar thermal collectors, and the water side inlet and water side outlet of all the solar thermal collectors are connected to a water storage device.

[0006] All of the aforementioned solar thermal collectors are equipped with a first throttling device at the refrigerant side inlet.

[0007] Furthermore, all of the solar thermal collectors are equipped with a fluid control device at their water-side inlet, which blocks or restricts the flow of water into the corresponding solar thermal collector.

[0008] Furthermore, a heating device is provided on the outlet side of the water storage device, which is used to heat the water flow temperature into all the solar thermal collectors.

[0009] Furthermore, a fluid flow device is matched to the inlet side of the water storage device, which is used to detect the flow rate of water flowing into the water storage device.

[0010] Furthermore, a water pump is matched to the outlet side of the water storage device.

[0011] Furthermore, all of the solar thermal collectors are equipped with a temperature detection device at the refrigerant side inlet, which is used to detect the temperature of the refrigerant flowing into the corresponding solar thermal collector.

[0012] Furthermore, the refrigerant circuit also includes a compressor, a condenser, and a second throttling device;

[0013] The compressor's discharge side is connected to the refrigerant inlet side of the condenser, the condenser's refrigerant outlet side is connected to the inlet side of the second throttling device, the second throttling device's outlet side is connected to the evaporator's inlet side, and the evaporator's outlet side is connected to the compressor's suction side.

[0014] Furthermore, the refrigerant circuit also includes a gas-liquid separator, the outlet side of which is connected to the suction side of the compressor, and the inlet side of which is connected to the outlet side of the evaporator and the refrigerant outlet of all the solar thermal collectors.

[0015] Furthermore, the solar thermal collector is a shell-and-tube heat exchanger or a coaxial heat exchanger.

[0016] This utility model also proposes a heat pump simulation laboratory, which is equipped with the heat pump simulation test system described above.

[0017] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0018] 1. This utility model flexibly adjusts the number of solar thermal collectors by opening and closing the first throttling device, thereby facilitating the study of the impact of changes in the number of solar thermal collectors on the overall performance of the system. It eliminates the need for downtime disassembly and assembly, shortens the testing cycle, reduces testing costs, and improves testing efficiency.

[0019] 2. This utility model controls the heat exchange state of the solar thermal collector by adjusting the water temperature on the water side entering the solar thermal collector, thereby characterizing the heat exchange state of the solar thermal collector under solar irradiation. It solves the pain point of traditional testing relying on outdoor sunlight and uncontrollable environment, so that the heat pump simulation test system can stably simulate the solar irradiation heat exchange state and realize the reproduction of various standard working conditions in a controllable environment such as a constant temperature laboratory. Attached Figure Description

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects and not to describe a particular order.

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the first heat pump simulation test system proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the fluid flow in the first heat pump simulation test system proposed in this utility model.

[0024] Figure 3 This is a schematic diagram of the second heat pump simulation test system proposed in this utility model;

[0025] Figure 4 This is a schematic diagram of fluid flow in the second heat pump simulation test system proposed in this utility model;

[0026] Figure 5 This is a logical schematic diagram of the heat pump simulation test system proposed in this utility model.

[0027] Figure label:

[0028] 10. Evaporator;

[0029] 20. Solar thermal collectors;

[0030] 201. First throttling device;

[0031] 202. Fluid control device; 203. Temperature detection device;

[0032] 30. Water storage device;

[0033] 301. Heating device; 302. Fluid flow device; 303. Water pump;

[0034] 40. Compressor;

[0035] 50. Condenser;

[0036] 60. Second throttling device;

[0037] 70. Gas-liquid separator. Detailed Implementation

[0038] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present utility model, and does not imply that every embodiment of the present utility model must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0039] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0040] In existing technologies, the solar thermal direct expansion-air source heat pump system, which combines photovoltaic thermal (PVT) technology and heat pump technology, has attracted widespread attention in the building energy supply field due to its high efficiency and energy-saving characteristics. However, the solar thermal collection of the solar thermal direct expansion-air source heat pump is instantaneous, and solar irradiance is intermittent and fluctuating. In actual operation, it is difficult to test and evaluate the system's performance under constant operating conditions. Therefore, it is difficult to test the performance of the solar thermal direct expansion-air source heat pump based on the actual light environment, and simulation testing systems are needed.

[0041] Traditional simulation testing systems rely heavily on on-site installation of solar thermal collectors, which are greatly affected by weather conditions. They also typically use a fixed number of solar thermal collectors, and testing different numbers of solar thermal collectors requires physical replacement of equipment. Each switch requires shutdown and disassembly, resulting in long testing cycles, high costs, and an inability to flexibly adjust the number of solar thermal collectors to study their impact on the overall system performance.

[0042] Therefore, in some embodiments, such as Figures 1-2 As shown, this utility model proposes a heat pump simulation test system that can flexibly adjust the number of solar thermal collectors, including a refrigerant circuit containing an evaporator 10; the inlet and outlet sides of the evaporator 10 are respectively connected in parallel to the refrigerant side inlet and refrigerant side outlet of multiple solar thermal collectors 20, and the water side inlet and water side outlet of all the solar thermal collectors 20 are connected to a water storage device 30.

[0043] A first throttling device 201 is arranged in a matching manner at the refrigerant side inlet of each of the photothermal collectors 20.

[0044] It should be noted that the first throttling device 201 proposed in this embodiment is exemplified by an electronic expansion valve. Of course, the first throttling device 201 can also be a capillary tube or other similar throttling structures; the selection of the first throttling device 201 should match the heat exchange capacity of the photothermal collector 20, and it is required to have no leakage, that is, the refrigerant does not flow after the first throttling device 201 is fully closed. And the refrigerant side inlets of a plurality of photothermal collectors 20 are connected in parallel to the inlet side of the evaporator 10, and the refrigerant side outlets of a plurality of photothermal collectors 20 are connected in parallel to the outlet side of the evaporator 10. The heat pump simulation test system proposed in this embodiment further comprises a main control unit, which is electrically connected with the first throttling device 201.

[0045] In this way, when the heat pump simulation test system operates, the number m (m<n) of photothermal collectors 20 to be simulated is input first, and then according to m photothermal collectors 20, the main control unit closes the corresponding (m+1)th to nth first throttling devices 201, that is, only opens the first m first throttling devices 201, so that the purpose of flexibly adjusting the photothermal collectors 20 can be achieved by setting different values of m; then the refrigerant circuit is started, during which the first m first throttling devices 201 are dynamically adjusted according to the heat exchange of the photothermal collectors 20 and the state of the entire heat pump simulation test system, which can be used as the control strategy / parameter verification test of the heat pump simulation test system.

[0046] Therefore, the present utility model flexibly adjusts the number of photothermal collectors 20 through the opening and closing of the first throttling device 201, thereby facilitating the study of the influence of the number change of photothermal collectors 20 on the overall performance of the system. No shutdown and disassembly are required, which shortens the test cycle, reduces the test cost and improves the test efficiency.

[0047] And the photothermal collector 20 is a tubular heat exchanger or a double-pipe heat exchanger, which can control the heat exchange state of the photothermal collector 20 by adjusting the water temperature on the water side entering the photothermal collector 20, so as to characterize the heat exchange state of the photothermal collector 20 under solar irradiation, which solves the problem that traditional testing relies on outdoor illumination and the environment is uncontrollable, so that the heat pump simulation test system can stably simulate the heat exchange state of solar irradiation, and realize the reproduction of various standard working conditions in a controllable environment such as a constant temperature laboratory.

[0048] In some embodiments, in order to further flexibly adjust the number of photothermal collectors 20, such as Figures 3-4 shown, a fluid control device 202 is arranged in a matching manner at the water side inlet of each of the photothermal collectors 20, and the fluid control device 202 blocks or restricts water flow from entering the corresponding photothermal collector 20.

[0049] It should be noted that the fluid control device 202 provided in this embodiment is a ball valve, a stop valve or a butterfly valve. The fluid control device 202 is a valve assembly, the opening and closing action of which is linked with the operating state of the photo-thermal collector 20. The fluid control device 202 proposed in this embodiment is electrically connected to the main control unit respectively.

[0050] In this way, when the heat pump simulation test system operates, the number m (m<n) of photo-thermal collectors 20 to be simulated is input first, then according to m photo-thermal collectors 20, the main control unit closes the corresponding first throttle devices 201 from the (m+1)-th to the n-th, and closes the corresponding fluid control devices 202 from the (m+1)-th to the n-th, that is, only opens the first m first throttle devices 201 and the first m fluid control devices 202. In this way, the purpose of flexibly adjusting the number of photo-thermal collectors 20 is achieved by setting different values of m, thereby facilitating the study of the influence of the change in the number of photo-thermal collectors 20 on the overall performance of the system.

[0051] In some embodiments, as Figure 3 shown, an outlet side of the water storage device 30 is provided with a heating device 301 in a matching manner, and the heating device 301 is configured to heat the temperature of water flow entering the water side of all the photo-thermal collectors 20.

[0052] It should be noted that the heating device 301 proposed in this embodiment is illustrated by taking a PTC liquid heater as an example. Of course, the heating device 301 can also be an electric heating plate or other heating structures, which is not limited herein. And the heating device 301 proposed in this embodiment is electrically connected to the main control unit.

[0053] In this way, the main control unit can adjust the heating temperature of the heating device 301 by controlling the power of the heating device 301, thereby changing the temperature of the water flow passing through the heating device 301. Then, the temperature of the water flow on the water side of the photo-thermal collector 20 exchanges heat with the refrigerant on the refrigerant side of the photo-thermal collector 20, so as to control the phase change temperature of the refrigerant in the photo-thermal collector 20, so that the phase change temperature is consistent with the set temperature, thereby achieving the benchmarking of the refrigerant phase change temperature under outdoor illumination, facilitating the evaluation of the performance of the system under different working conditions, realizing the seamless linkage of "variable quantity test" and "control strategy optimization" on the same platform, providing an efficient verification path for system development, and improving the accuracy and repeatability of the test.

[0054] Of course, when multiple solar thermal collectors 20 are operating, there will be situations where the water temperature at the water-side inlet of the solar thermal collector 20 closer to the heating device 301 is high, while the water temperature at the water-side inlet of the solar thermal collector 20 farther from the heating device 301 is low. In this case, the main control unit can control the opening of the fluid control device 202 to achieve this. For example, the opening of the fluid control device 202 corresponding to the solar thermal collector 20 closer to the heating device 301 will be reduced, thereby reducing the incoming water flow and thus lowering the phase change temperature of the refrigerant in the solar thermal collector 20; the opening of the fluid control device 202 corresponding to the solar thermal collector 20 farther from the heating device 301 will be increased, thereby increasing the incoming water flow and thus raising the phase change temperature of the refrigerant in the solar thermal collector 20, thereby ensuring that the phase change temperature of the refrigerant in multiple solar thermal collectors 20 remains consistent.

[0055] In other embodiments, the heating device 301 is illustrated using an electric heating plate, which simulates the temperature change of the heat-absorbing surface of the solar thermal collector 20 by controlling the surface temperature of the electric heating plate. Water flows through the heat exchange channels on the surface of the electric heating plate, and the water temperature is controlled by adjusting the power of the electric heating plate, thereby controlling the heat exchange state of the solar thermal collector 20. This solution simplifies the composition and structure of the heating device 301, reduces system maintenance costs, and provides good temperature control accuracy, making it suitable for testing scenarios with high requirements for heating stability.

[0056] In some embodiments, such as Figure 3 As shown, a water pump 303 is matched to the outlet side of the water storage device 30, and the water pump 303 is electrically connected to the main control unit.

[0057] It should be noted that the water pump 303 proposed in this embodiment is a variable frequency water pump.

[0058] In this way, the main control unit can adjust the heating temperature of the heating device 301 by controlling the power of the heating device 301. Then, the main control unit can adjust the speed of the water pump 303 by controlling the frequency of the water pump 303, thereby further accurately changing the water flow temperature passing through the heating device 301. Then, the water flow temperature on the water side of the solar thermal collector 20 will exchange heat with the refrigerant on the refrigerant side of the solar thermal collector 20, thereby controlling the phase change temperature of the refrigerant in the solar thermal collector 20 to be consistent with the set temperature, thus achieving the refrigerant phase change temperature under outdoor sunlight. This realizes the seamless linkage between "variable quantity testing" and "control strategy optimization" on the same platform, providing an efficient verification path for system development and further improving the accuracy and repeatability of the test.

[0059] In some embodiments, such as Figure 3 As shown, a fluid flow device 302 is matched to the inlet side of the water storage device 30, and the fluid flow device 302 is used to detect the flow rate of water flowing into the water storage device 30.

[0060] It should be noted that the fluid flow device 302 proposed in this embodiment is preferably a liquid flow meter, and the fluid flow device 302 is electrically connected to the main control unit.

[0061] In this way, the fluid flow device 302 measures the volumetric flow rate of the cold water (e.g., m³ / h), and combined with the water temperature difference, the actual heat exchange Q0 can be calculated. Then, based on the actual heat exchange and the electrical power Q1 of the compressor 40 / water pump 303, the energy efficiency ratio (COP) can be calculated. This enables a comprehensive evaluation of system performance, such as COP, heating capacity, and power, providing a reliable basis for system optimization design and control strategy verification.

[0062] In order to further accurately determine whether the refrigerant phase change temperature in the solar thermal collector 20 is consistent with the set temperature, such as... Figure 3 As shown, all of the solar thermal collectors 20 are equipped with a temperature detection device 203 at the refrigerant side inlet. The temperature detection device 203 is used to detect the temperature of the refrigerant flowing into the corresponding solar thermal collector 20.

[0063] It should be noted that the temperature detection device 203 is electrically connected to the main control unit. The main control unit can adjust the opening and closing of the fluid control device 202 according to the refrigerant temperature detected by the temperature detection device 203, thereby dynamically adjusting the water inlet flow.

[0064] The main control unit can also be equipped with an intelligent control module, which uses a PLC or embedded controller to perform closed-loop control on the opening and closing of the first throttling device 201 and the fluid control device 202, the speed of the water pump 303 and the power of the heating device 301. Then, the main control unit collects parameters such as the refrigerant temperature at the refrigerant inlet of the solar thermal collector 20 and the water flow rate into the water storage device 30. Combined with preset control strategies (such as PID control, fuzzy control, etc.), it realizes automatic adjustment of the heat exchange state of the solar thermal collector 20, achieves zero downtime and second-level switching, improves testing efficiency, and enhances the automation level of the testing process and the stability of the test results.

[0065] In some embodiments, to ensure the stable operation of the heat pump simulation test system, such as Figure 3 As shown, the refrigerant circuit also includes a compressor 40, a condenser 50, and a second throttling device 60;

[0066] The discharge side of the compressor 40 is connected to the refrigerant inlet side of the condenser 50, the refrigerant outlet side of the condenser 50 is connected to the inlet side of the second throttling device 60, the outlet side of the second throttling device 60 is connected to the inlet side of the evaporator 10, and the outlet side of the evaporator 10 is connected to the suction side of the compressor 40.

[0067] Wherein, the refrigerant circuit further comprises a gas-liquid separator 70, an outlet side of the gas-liquid separator 70 is connected to a suction side of the compressor 40, and an inlet side of the gas-liquid separator 70 is connected to an outlet side of the evaporator 10 and refrigerant-side outlets of all the photothermal collectors 20 respectively.

[0068] Thus, when the number of working photothermal collectors 20 is small, the gas-liquid separator 70 can collect excess liquid refrigerant, stabilize the system pressure, prevent liquid refrigerant from entering the cylinder of the compressor 40, and avoid mechanical impact (liquid hammer) caused by incompressibility of liquid; it can also prevent liquid refrigerant from diluting the refrigeration oil in the crankcase of the compressor 40, and maintain the viscosity and lubricating effect of the lubricating oil.

[0069] In some embodiments, the present invention further provides a heat pump simulation laboratory, wherein the heat pump simulation laboratory is installed with the above heat pump simulation test system.

[0070] It should be noted that the heat pump simulation test system provided in this embodiment simulates a direct-expansion photothermal-air source heat pump system.

[0071] Wherein, the compressor 40, the condenser 50, the second throttling device 60, the evaporator 10, the refrigerant side of the photothermal collectors 20, and the gas-liquid separator 70 form the direct-expansion photothermal-air source heat pump part, which are connected via refrigerant flow paths; the heat exchange capacity of a single photothermal collector 20 is preferably a nominal heat exchange capacity (such as STC condition: ambient temperature 25°C, irradiance 1000W / m 2 etc.). The water storage device 30, the fluid control devices 202, the heating device 301, the fluid flow device 302 and the water pump 303 form the heat simulation part for placing the photothermal collectors 20, which are connected via water flow paths.

[0072] Thus, when the heat pump simulation test system operates, as shown in Figure 5 first input the number m of photothermal collectors 20 (m < n) to be simulated in the heat pump simulation test system, the set refrigerant temperature at the refrigerant-side inlets of the photothermal collectors 20, and the set water flow rate of the fluid flow device 302.

[0073] Then, according to the m photothermal collectors 20, the main control unit closes the corresponding (m+1)-th to n-th first throttling devices 201, and closes the corresponding (m+1)-th to n-th fluid control devices 202, that is, only opens the first m first throttling devices 201 and the first m fluid control devices 202, so that the purpose of flexibly adjusting the number of photothermal collectors 20 can be achieved by setting different values of m.

[0074] Then the compressor 40 is driven to work. During this period, the first m first throttling devices 201 are dynamically adjusted according to the heat exchange of the solar thermal collector 20 and the overall system status. This can be used as a pump simulation test system control strategy / parameter verification test.

[0075] During system operation, the actual refrigerant temperature at the refrigerant inlet of the solar thermal collector 20 and the actual water flow rate detected by the fluid flow device 302 are collected. The power of the heating device 301 is dynamically adjusted to make the actual refrigerant temperature reach the set refrigerant temperature, so as to control the phase change temperature of the refrigerant in the solar thermal collector 20. The speed of the water pump 303 is adjusted to make the actual water flow rate reach the set water flow rate, so as to facilitate the calculation of the heat collection of the solar thermal collector 20.

[0076] Finally, the heat pump heating performance data (COP, heating capacity, power / power consumption, etc.) is collected. After the system stabilizes, the heating performance of different numbers of solar thermal collectors 20 and different control strategies / parameters is evaluated to guide the development and promotion of solar thermal direct expansion-air source heat pump systems.

[0077] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this 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 specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A heat pump simulation test system, comprising a refrigerant circuit containing an evaporator (10); characterized in that, The evaporator (10) is connected in parallel to the refrigerant side inlet and refrigerant side outlet of multiple solar thermal collectors (20), and the water side inlet and water side outlet of all the solar thermal collectors (20) are connected to the water storage device (30). All of the aforementioned solar thermal collectors (20) are equipped with a first throttling device (201) at the refrigerant side inlet.

2. The heat pump simulation test system according to claim 1, characterized in that, All of the solar thermal collectors (20) are equipped with a fluid control device (202) at their water-side inlets. The fluid control device (202) blocks or restricts the flow of water into the corresponding solar thermal collector (20).

3. The heat pump simulation test system according to claim 1 or 2, characterized in that, A heating device (301) is provided on the outlet side of the water storage device (30), and the heating device (301) is used to heat the water flow temperature on the water side flowing into all the solar thermal collectors (20).

4. The heat pump simulation test system according to claim 1 or 2, characterized in that, A fluid flow device (302) is matched to the inlet side of the water storage device (30), and the fluid flow device (302) is used to detect the flow rate of water flowing into the water storage device (30).

5. The heat pump simulation test system according to claim 1 or 2, characterized in that, A water pump (303) is matched to the outlet side of the water storage device (30).

6. The heat pump simulation test system according to claim 1 or 2, characterized in that, All of the solar thermal collectors (20) are equipped with a temperature detection device (203) at the refrigerant side inlet. The temperature detection device (203) is used to detect the temperature of the refrigerant flowing into the corresponding solar thermal collector (20).

7. The heat pump simulation test system according to claim 1 or 2, characterized in that, The refrigerant circuit also includes a compressor (40), a condenser (50), and a second throttling device (60). The exhaust side of the compressor (40) is connected to the refrigerant inlet side of the condenser (50), the refrigerant outlet side of the condenser (50) is connected to the inlet side of the second throttling device (60), the outlet side of the second throttling device (60) is connected to the inlet side of the evaporator (10), and the outlet side of the evaporator (10) is connected to the suction side of the compressor (40).

8. The heat pump simulation test system according to claim 7, characterized in that, The refrigerant circuit also includes a gas-liquid separator (70), the outlet side of which is connected to the suction side of the compressor (40), and the inlet side of which is connected to the outlet side of the evaporator (10) and the refrigerant side outlet of all the solar thermal collectors (20).

9. The heat pump simulation test system according to claim 1 or 2, characterized in that, The solar thermal collector (20) is a shell-and-tube heat exchanger or a coaxial heat exchanger.

10. A heat pump simulation laboratory, characterized in that, The heat pump simulation laboratory is equipped with the heat pump simulation test system as described in any one of claims 1 to 9.

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