CN216622235U

CN216622235U - Performance test platform for transcritical carbon dioxide heat exchanger

Info

Publication number: CN216622235U
Application number: CN202122712215.4U
Authority: CN
Inventors: 陈雪君; 王健; 顾子超; 李朱德; 杨润; 马杰
Original assignee: Jiangsu Jintong Lingguang Nuclear Energy Technology Co ltd
Current assignee: Jiangsu Jintong Lingguang Nuclear Energy Technology Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-05-27
Anticipated expiration: 2031-11-08

Abstract

The utility model relates to a performance test platform for a transcritical carbon dioxide heat exchanger, wherein the transcritical carbon dioxide heat exchanger comprises a gas side inlet, a gas side outlet, a water side inlet and a water side outlet, and the performance test platform comprises: starting a loop; the gas side loop comprises a gas side circulating pump, a main path regulating valve and a heater; the water side loop comprises a surface cooler and a water side circulating pump; the monitoring assembly comprises a gas side inlet thermometer, a gas side outlet thermometer, a water side inlet thermometer and a water side outlet thermometer, wherein the gas side inlet thermometer and the gas side outlet thermometer can monitor the carbon dioxide temperatures of a gas side inlet and a gas side outlet respectively, and the water side inlet thermometer and the water side outlet thermometer can monitor the working medium temperatures of a water side inlet and a water side outlet respectively; a control device; wherein the gas side loop further comprises a bypass regulating valve which is in fluid communication with the upstream pipeline of the gas side inlet and the downstream pipeline of the gas side outlet through the upstream and downstream end parts of the bypass regulating valve.

Description

Performance test platform for transcritical carbon dioxide heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a performance test platform for a trans-critical carbon dioxide heat exchanger.

Background

The carbon dioxide fluid becomes a heat transfer working medium which is concerned by the comprehensive advantages of environmental protection, economy, safety, excellent heat transfer characteristic and the like. Because of the low critical temperature of carbon dioxide, carbon dioxide cycles are typically run transcritical. The trans-critical circulation is that the suction pressure of the compressor is lower than the critical pressure, but the exhaust pressure is higher than the critical pressure, the heat exchange of the working medium at the high-pressure side is mainly completed by sensible heat exchange, and the heat exchange at the low-pressure side is mainly completed by latent heat. The transcritical carbon dioxide heat exchanger is an important part of a transcritical carbon dioxide cycle, and has a crucial influence on the efficiency of the cycle, but a performance test platform capable of accurately and reliably testing the transcritical carbon dioxide heat exchanger is still lacking.

Chinese patent publication No. CN111537253A discloses a performance test platform for a high-efficiency compact heat exchanger for water-carbon dioxide heat exchange, which simulates the working state of transcritical carbon dioxide by respectively providing a first loop system and a second loop system in fluid communication with the heat exchanger to test the performance of the heat exchanger. However, the performance experiment platform has the following defects: 1. the boiler is adopted to heat the carbon dioxide fluid, the temperature control precision of the carbon dioxide fluid and the cooling medium is low, and the working condition cannot be accurately simulated; 2. lack of necessary monitoring components, failure to provide accurate test data; 3. and the necessary safety guarantee components are lacked so as to ensure the personal safety of workers.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that a test platform capable of accurately and reliably testing the transcritical carbon dioxide heat exchanger is lacked, the utility model aims to provide a performance test platform for the transcritical carbon dioxide heat exchanger.

In order to achieve the above object, the present invention provides the following technical solutions: a performance test platform for a transcritical carbon dioxide heat exchanger, said transcritical carbon dioxide heat exchanger including a gas side inlet, a gas side outlet, a water side inlet and a water side outlet, said performance test platform comprising: a start-up circuit comprising a cylinder capable of providing carbon dioxide fluid and a plunger pump capable of raising the pressure of the carbon dioxide fluid, said plunger pump being located downstream of said cylinder; the gas side loop comprises a gas side circulating pump, a main path regulating valve and a heater, wherein a gas side inlet and a gas side outlet are communicated with the gas side loop through pipelines to form a circulating loop for flowing the carbon dioxide fluid, the gas side circulating pump can provide flowing power of the carbon dioxide fluid, and the heater can heat the carbon dioxide fluid; the water side loop comprises a water side first stop valve, a surface cooler and a water side circulating pump, wherein the water side inlet and the water side outlet are communicated with the water side loop through pipelines to form a circulating loop for the working medium water to flow, the water side circulating pump can provide the flowing power of the working medium water, and the surface cooler can cool the working medium water; the monitoring assembly comprises a gas side inlet thermometer, a gas side outlet thermometer, a water side inlet thermometer and a water side outlet thermometer, wherein the gas side inlet thermometer and the gas side outlet thermometer can monitor the temperature of carbon dioxide fluid at a gas side inlet and a gas side outlet respectively, and the water side inlet thermometer and the water side outlet thermometer can monitor the temperature of working medium water at a water side inlet and a water side outlet respectively; the control device is in signal connection with the monitoring assembly and can control each energy consumption component of the performance test platform to automatically operate; wherein the start-up circuit is in communication with the gas side circuit conduit, the gas side circuit further comprising a bypass regulating valve, the bypass regulating valve being in fluid communication with the upstream conduit of the gas side inlet and the downstream conduit of the gas side outlet through the upstream and downstream ends thereof to regulate the flow of the carbon dioxide fluid entering the gas side inlet.

Compared with the prior art, the test platform provided by the utility model has the following beneficial effects: 1. various working conditions are accurately simulated by adjusting the output power of each part such as a plunger pump, a water side circulating pump, a heater, a gas side circulating pump and the like, so that the performance of the cross-part carbon dioxide heat exchanger under different working conditions is comprehensively tested; 2. the monitoring assembly monitors and collects various operating parameters, and the heat exchange performance of the heat exchanger under different working conditions is accurately tested.

In the above technical solution, preferably, the gas-side circulation pump, the main path regulating valve and the heater are sequentially in pipe communication, the gas-side inlet is in pipe communication with the heater, and the gas-side outlet is in pipe communication with an inlet of the gas-side circulation pump.

In the above-described preferred embodiment, it is further preferred that an upstream end portion of the bypass control valve communicates with the outlet pipe of the gas-side circulation pump, and a downstream end portion of the bypass control valve communicates with the gas-side outlet pipe.

In the above-mentioned preferred embodiment, it is further preferred that the monitoring assembly further includes a gas-side flow meter, a heater inlet thermometer, a pressure gauge, and a differential pressure gauge, the gas-side flow meter and the heater inlet thermometer are both located between the main path regulating valve and the heater, the gas-side inlet thermometer and the pressure gauge are both located between the heater and the gas-side inlet, and the differential pressure gauge respectively communicates the gas-side inlet and the gas-side outlet through its two ends. It is further preferred that the gas-side flow meter is a mass flow meter. This preferred scheme is through setting up the gas side flowmeter that can detect mass flow, avoids responding to carbon dioxide gas and is heated the volume expansion behind the heater and volume flow changes and the measuring error who causes, guarantees that performance test platform's test knot is accurate.

In the above-described aspect, it is preferable that the water side first shutoff valve, the surface cooler, and the water side circulation pump are sequentially connected by a pipe, the water side inlet is connected to the water side circulation pump pipe, and the water side outlet is connected to the water side first shutoff valve pipe. Further preferably, the water side loop further comprises a water side second stop valve, and the water side second stop valve is arranged between the water side circulating pump and the water side inlet. Still further preferably, the monitoring assembly further includes a water side flow meter, the water side outlet thermometer is disposed between the water side first cut-off valve and the surface cooler, and the water side inlet thermometer and the water side flow meter are both disposed between the water side circulation pump and the water side second cut-off valve.

In the above technical solution, preferably, the start circuit further includes a start stop valve adjacent to a downstream of the plunger pump, the start stop valve is communicated with an inlet pipe of the gas-side circulation pump, and the control device is configured to adjust a valve opening degree of the start stop valve based on a pressure of the carbon dioxide fluid in the gas-side circuit.

In the above technical solution, preferably, the gas-side circulation pump and the water-side circulation pump are both variable frequency pumps capable of adjusting output. The variable frequency pump is arranged to adjust the flow of the fluid, so that the stability and the accuracy of flow adjustment can be ensured, and the accuracy of a test result of the performance test platform is improved.

In the above technical solution, preferably, the testing platform further includes a vacuum stop valve and a vacuum pump, the vacuum stop valve is communicated with an outlet pipeline of the plunger pump, and the vacuum pump is communicated with the vacuum stop valve pipeline and is configured to be capable of pumping out the carbon dioxide fluid in the performance testing platform.

In the above technical solution, preferably, the test platform further includes a throttle stop valve and a throttle valve, the throttle stop valve is communicated with an inlet pipeline of the gas-side circulation pump, the throttle valve is communicated with the throttle stop valve pipeline, and the control device is configured to adjust a valve opening of the throttle stop valve based on a pressure of the carbon dioxide fluid in the gas-side loop.

In the above technical solution, preferably, the gas-side circuit further includes a relief valve, and the relief valve is configured to: when the pressure of the carbon dioxide fluid in the gas side loop is greater than the set pressure, the safety valve is automatically opened and the gas side loop is rapidly decompressed. The safety valve can be opened in time and outwards discharge the carbon dioxide fluid when the carbon dioxide fluid is higher than a certain pressure so as to ensure the personal safety of workers and avoid the damage of the performance test platform equipment.

Drawings

FIG. 1 is a performance testing platform for a transcritical carbon dioxide heat exchanger according to the present invention;

FIG. 2 is an enlarged view of the performance testing platform of FIG. 1 at A;

fig. 3 is a schematic wiring diagram of the control device provided by the present invention.

Detailed Description

To explain technical contents, structural features, achieved objects and effects of the present invention in detail, the technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a detailed description of various exemplary embodiments or implementations of the utility model. However, various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. Moreover, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the particular shapes, configurations and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

Further, spatially relative terms such as "below … …," "below … …," "below … …," "below," "above … …," "above," "… …," "higher," "side" (e.g., as in "side wall"), and the like, in this application, thus describe one element's relationship to another (other) element as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of above and below. Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. In the present application, "upstream" and "downstream" refer to "upstream" and "downstream" with respect to the flow direction of the fluid. For example: by "the plunger pump is located downstream of the gas cylinder" it is meant: the plunger pump is located downstream of the gas cylinder with respect to the direction of fluid flow.

In this application, "quick pressure release" means that the pipeline directly communicates with the external world, and the high-pressure fluid that is located the circulating line is under the processing of no throttle or step-down, discharges to the external world fast to reach the effect of the fluid pressure in the quick reduction circulating line. For example: the safety valve is opened to quickly release pressure to the air side loop. The term "means that when the safety valve is opened, the gas-side loop is in direct fluid communication with the outside, and the high-pressure fluid in the gas-side loop is directly discharged to the outside without throttling or pressure reduction, so that the pressure of the fluid in the gas-side loop is rapidly reduced.

In the present application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., "coupled" may be a fixed connection, a removable connection, or an integral part; may be directly connected or indirectly connected through an intermediate.

Referring to fig. 1-2, a performance testing platform 100 (arrows indicate fluid flow direction) for a transcritical carbon dioxide heat exchanger (hereinafter referred to as heat exchanger) provided by the present invention is shown, wherein the performance testing platform 100 includes a start-up loop, a gas-side loop, a water-side loop, a monitoring assembly, and a control device 7. As shown in fig. 3, the control device 7 is in signal connection with each energy consuming component of the performance testing platform 100 and configured to control each energy consuming component of the performance testing platform 100 to realize automatic operation of the performance testing platform 100.

The heat exchanger 6 is a double-medium heat exchanger, and the medium comprises carbon dioxide flowing on the gas side and working medium water flowing on the water side. As shown in fig. 2, the heat exchanger 6 includes a gas-side inlet 61, a gas-side outlet 62, a water-side inlet 63 and a water-side outlet 64, and the heat exchanger 6 further includes a gas-side passage (not shown) for communicating the gas-side inlet 61 with the gas-side outlet 62 and a water-side passage (not shown) for communicating the water-side inlet 63 with the water-side outlet 64, so that the two fluids can exchange heat in the heat exchanger 6. When testing, the temperature of the carbon dioxide fluid in the heat exchanger 6 is higher than that of the working medium water. In this embodiment, the heat exchange mode between the carbon dioxide fluid and the working fluid water in the heat exchanger 6 is reverse heat exchange, and in other embodiments, the heat exchange mode can be forward heat exchange.

The starting circuit can provide carbon dioxide fluid which meets the test pressure for the gas side circuit and the heat exchanger 6, and comprises a gas cylinder 11, a plunger pump 12 and a starting stop valve 13 which are sequentially communicated through pipelines. The cylinder 11 is used to supply carbon dioxide fluid to the gas side loop and heat exchanger 6, and the plunger pump 12 is capable of raising the pressure of the carbon dioxide fluid from the cylinder to a test required pressure and delivering it to the gas side loop. Because the performance test platform during operation, carbon dioxide fluid is in the transcritical state of gas-liquid combination, compare in other types of pumps, the plunger pump can not only provide high enough pressure for carbon dioxide but also can alleviate the cavitation effect of the coexistent carbon dioxide of gas-liquid to the pump body effectively and thereby improve the life of the pump body. With reference to fig. 3, the start stop valve 13 is in signal connection with the control device 7, the control device 7 being configured to be able to control the valve opening of the start stop valve 13 based on the fluid pressure of the gas-side circuit.

The gas-side circuit includes a gas-side circulation pump 21, a main-path regulating valve 22, a gas-side shutoff valve 23, and a heater 24, which are sequentially in pipe communication. The inlet of the gas-side circulation pump 21 is communicated with the downstream port of the start stop valve 13 and can provide flowing power for the carbon dioxide fluid, and the gas-side circulation pump 21 in this case is a variable frequency pump to adjust the flow rate of the carbon dioxide fluid according to the test requirements. The main regulating valve 22 is an electric valve with adjustable opening degree, and the gas side stop valve 23 is used for blocking fluid communication in a gas side loop when the performance testing platform is stopped. The heater 24 is used to raise the temperature of the carbon dioxide fluid to the temperature required for the test.

The gas-side inlet 61 of the heat exchanger 6 communicates with the downstream port piping of the heater 24, and the gas-side outlet 62 of the heat exchanger 6 communicates with the inlet piping of the gas-side circulation pump 21. The gas side circulation pump 21, the main path regulating valve 22, the gas side stop valve 23, the heater 24 and the heat exchanger 6 form a circulation loop connected end to end and in fluid communication for circulating the carbon dioxide fluid inside. The gas-side circuit is provided with a bypass regulating valve 25, an upstream end portion of the bypass regulating valve 25 communicates with an outlet of the gas-side circulation pump 21, and a downstream end portion of the bypass regulating valve 25 communicates with a gas-side outlet 62 of the heat exchanger 6. The bypass control valve 25 is used to further control the flow rate of the carbon dioxide fluid entering the gas inlet 61 by the bypass control valve 25 when the gas-side circulation pump 21 cannot satisfy the fluid flow rate control function.

Referring to fig. 3, the monitoring assembly includes a plurality of sensors and is configured to monitor fluid parameters (including temperature, pressure and flow rate) of the performance testing platform, each sensor on the monitoring assembly is in signal connection with the control device 7 and is configured to send the monitored parameters to the control device 7, and the control device 7 is configured to control the automatic operation of the performance testing platform 100 based on the received parameters.

The monitoring assembly includes a gas side flow meter 41, a heater inlet thermometer 42, a gas side inlet thermometer 43, a gas side pressure gauge 44, a gas side outlet thermometer 46, and a differential pressure gauge 45 disposed on the gas side loop. The gas-side flow meter 41 is disposed between the main path regulating valve 22 and the gas-side stop valve 23 and can monitor the flow rate of the carbon dioxide fluid in the gas-side loop, in this embodiment, the gas-side flow meter 41 is a mass flow meter to avoid the volume flow rate change of the carbon dioxide fluid heated by the heater 24 from causing the error of the test result. A heater inlet thermometer 42 is provided between the gas-side cut-off valve 23 and the heater 24 to monitor the inlet temperature of the heater 24. The gas-side inlet thermometer 43 and the gas-side pressure gauge 44 are disposed between the heater 24 and the gas-side inlet 61, and are configured to monitor the temperature and the pressure of the carbon dioxide fluid at the gas-side inlet 61 (i.e., at the outlet of the heater 24), respectively, wherein it is also possible to determine whether the heater 24 is abnormal, such as internal leakage of the heater 24 (excessive temperature difference), fouling of the heat exchange pipes (insufficient temperature difference), and the like, by the temperature difference between the heater inlet thermometer 42 and the gas-side inlet thermometer 43. The differential pressure gauge 45 is in fluid communication with the gas-side inlet 61 and the gas-side outlet 62 of the heat exchanger 6 through both ends thereof, respectively, to monitor the pressure difference before and after the carbon dioxide fluid passes through the heat exchanger 6.

The water side loop is pre-stored with working medium water and comprises a water side first stop valve 31, a surface air cooler 32, a water side circulating pump 33 and a water side second stop valve 34 which are sequentially communicated through pipelines, the surface air cooler 32 is used for reducing the temperature of the working medium water to the temperature required by the test, and the water side circulating pump 33 is used for providing flowing power of the working medium water. The water side first stop valve 31 and the water side second stop valve 34 are respectively in pipe communication with the water side outlet 64 and the water side inlet 63, so that the components of the water side loop can be conveniently isolated and maintained. The heat exchanger 6 and the water side loop form a circulation loop for the working medium water to circularly flow.

The monitoring assembly also includes a water side flow meter 49, a water side outlet thermometer 47 and a water side inlet thermometer 48 disposed on the water side loop. A water side outlet thermometer 47 is located between the water side first stop valve 31 and the surface cooler 32 and is configured to monitor the temperature of the working fluid water at the water side outlet 64, and a water side inlet thermometer 48 and a water side flow meter 49 are both located between the water side circulation pump 33 and the water side second stop valve 34 and are configured to monitor the temperature and flow rate of the working fluid water at the water side inlet 63, respectively.

The performance testing platform 100 is also provided with a vacuum pump 52, a throttle valve 54, and a relief valve 26. The vacuum pump 52 is in fluid communication with the downstream end of the plunger pump 12 through a vacuum pump throttle valve 51 and is configured to draw off carbon dioxide fluid in the start-up circuit and the gas-side circuit, and the vacuum pump shut-off valve 51 is configured to block the start-up circuit from fluid communication with the vacuum pump 52 to prevent carbon dioxide fluid in the start-up circuit from leaking out of the performance testing platform 100 through the vacuum pump 52.

The throttle valve 54 is in fluid communication with the upstream end of the air side circulation pump 21 through a throttle cut-off valve 53, and the throttle cut-off valve 53 is configured to block fluid communication between the air side circuit and the throttle valve 54 to prevent carbon dioxide fluid in the air side circuit from flowing out of the performance test platform 100 through the throttle valve 54. The throttle valve 54 is configured to: when the throttle cut-off valve 53 is in an open state, the carbon dioxide fluid in the gas-side circuit is throttled and depressurized and then discharged to the outside, so that the high-pressure fluid is prevented from injuring surrounding equipment or workers.

A relief valve 26 is provided on the gas-side circuit between the main circuit shutoff valve 23 and the heater 24, a relief pressure being pre-stored in the relief valve 26 and configured to: when the fluid pressure in the air-side loop is higher than the safety pressure, the safety valve 26 automatically opens and rapidly releases the pressure to the outside, so as to prevent the high-pressure fluid from harming the personal safety of the working personnel and causing damage to the performance testing platform 100. The safety valve 26 in this embodiment is a mechanical safety valve.

The working principle of the performance testing platform 100 is explained as follows: the control device 7 starts the vacuum pump 52 and the vacuum pump stop valve 51 to vacuumize the start loop and the air side loop, so as to prevent air from mixing in the performance testing platform 100 and affecting the testing result. Thereafter, the gas cylinder 11 is manually opened, the control device 7 simultaneously opens the start stop valve 13, the main path regulating valve 22, the main path stop valve 23, and the plunger pump 12, the plunger pump 12 raises the pressure of the carbon dioxide fluid from the gas cylinder 11 and feeds the fluid to the gas-side circuit, and when the fluid pressure in the gas-side circuit reaches the pressure required for the performance test, the control device 7 stops the plunger pump 12 and closes the start stop valve 13.

Subsequently, the control device 7 starts the water side circulating pump 33, the gas side circulating pump 21, the heater 24 and the surface cooler 32, and the control device 7 adjusts the temperature of the carbon dioxide fluid entering the gas side inlet 61 by adjusting the power of the heater 24; adjusting the mass flow rate of the carbon dioxide fluid entering the gas-side inlet 61 by adjusting the opening degrees of the gas-side circulation pump 21, the main path adjusting valve 22, and the bypass adjusting valve 25, respectively; the flow rate and temperature of the working fluid at the water side inlet 63 are adjusted by adjusting the power of the surface air cooler 32, and the flow rate of the working fluid at the water side inlet 63 is adjusted by adjusting the output of the water side circulating pump 33. During this period, if the pressure of the carbon dioxide fluid in the gas-side circuit is lower than the pressure required for the test, the control device 7 activates the plunger pump 12 and activates the cut-off valve 13 to replenish the gas-side circuit with the carbon dioxide fluid.

After the fluid parameters (including temperature, pressure and flow) at the gas-side inlet 61 and the water-side inlet 63 meet the requirements required by the test, the control device 7 records the fluid parameters at the gas-side outlet 62 and the water-side outlet 64 and calculates the heat exchange performance of the heat exchanger 6 under the working condition. Thereafter, the test platform 100 performs a performance test or a shutdown for the next condition.

When the test platform 100 is stopped, the control device 7 turns off the heater 24, and after the temperature of the carbon dioxide fluid in the air-side loop is reduced to room temperature, turns off the air-side circulating pump 21 and the water-side circulating pump 33, and opens the throttle valve 54 and the throttle stop valve 53 to empty the carbon dioxide fluid in the air-side loop.

The foregoing shows and describes the general principles, principal features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the foregoing description only for the purpose of illustrating the principles of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims, specification, and equivalents thereof.

Claims

1. A performance test platform for a transcritical carbon dioxide heat exchanger, the transcritical carbon dioxide heat exchanger (6) comprising a gas side inlet (61), a gas side outlet (62), a water side inlet (63) and a water side outlet (64), the performance test platform (100) comprising:

a start-up circuit comprising a cylinder (11) capable of supplying carbon dioxide fluid and a plunger pump (12) capable of raising the pressure of the carbon dioxide fluid, said plunger pump (12) being located downstream of said cylinder (11);

the gas side loop comprises a gas side circulating pump (21), a main path regulating valve (22) and a heater (24), wherein the gas side inlet (61) and the gas side outlet (62) are communicated with the gas side loop through pipelines and form a circulating loop for flowing the carbon dioxide fluid, the gas side circulating pump (21) can provide flowing power of the carbon dioxide fluid, and the heater (24) can heat the carbon dioxide fluid;

the water side loop comprises a water side first stop valve (31), a surface air cooler (32) and a water side circulating pump (33), the water side inlet (63) and the water side outlet (64) are communicated with the water side loop through pipelines and form a circulating loop for working medium water to flow, the water side circulating pump (33) can provide flowing power of the working medium water, and the surface air cooler (32) can cool the working medium water;

a monitoring assembly comprising a gas side inlet thermometer (43), a gas side outlet thermometer (46), a water side inlet thermometer (48) and a water side outlet thermometer (47), said gas side inlet thermometer (43) and said gas side outlet thermometer (46) being capable of monitoring the temperature of carbon dioxide fluid at said gas side inlet (61) and said gas side outlet (62), respectively, said water side inlet thermometer (48) and said water side outlet thermometer (47) being capable of monitoring the temperature of working fluid at said water side inlet (63) and said water side outlet (64), respectively;

the control device (7) is in signal connection with the monitoring assembly and can control each energy consumption component of the performance testing platform (100) to automatically operate;

wherein the start-up circuit is in communication with the gas side circuit conduit, the gas side circuit further comprising a bypass regulating valve (25), the bypass regulating valve (25) being in fluid communication with an upstream conduit of the gas side inlet (61) and a downstream conduit of the gas side outlet (62) through upstream and downstream ends thereof to regulate a flow rate of the carbon dioxide fluid entering the gas side inlet (61).

2. The performance testing platform of claim 1, wherein the air side circulation pump (21), the main circuit regulating valve (22) and the heater (24) are in sequential pipe communication, the air side inlet (61) is in pipe communication with the heater (24), and the air side outlet (62) is in pipe communication with an inlet of the air side circulation pump (21).

3. Performance test platform according to claim 2, characterized in that the upstream end of the bypass regulating valve (25) is in communication with the outlet conduit of the gas side circulation pump (21) and the downstream end of the bypass regulating valve (25) is in communication with the gas side outlet (62) conduit.

4. The capability test platform of claim 2, wherein the monitoring assembly further comprises a gas side flow meter (41), a heater inlet thermometer (42), a pressure gauge (44) and a differential pressure gauge (45), wherein the gas side flow meter (41) and the heater inlet thermometer (42) are both located between the main path regulating valve (22) and the heater (24), the gas side inlet thermometer (43) and the pressure gauge (44) are both located between the heater (24) and the gas side inlet (61), and the differential pressure gauge (45) respectively communicates the gas side inlet (61) and the gas side outlet (62) through two ends thereof.

5. The performance testing platform of claim 4, wherein the gas side flow meter (41) is a mass flow meter.

6. The performance test platform of claim 1, wherein the water side first cut-off valve (31), the surface cooler (32) and the water side circulation pump (33) are sequentially connected by a pipeline, the water side inlet (63) is connected by a pipeline with the water side circulation pump (33), and the water side outlet (64) is connected by a pipeline with the water side first cut-off valve (31).

7. The performance testing platform of claim 6, wherein the water side circuit further comprises a second water side stop valve (34), the second water side stop valve (34) being disposed between the water side circulation pump (33) and the water side inlet (63).

8. The performance testing platform of claim 7, wherein the monitoring assembly further comprises a water side flow meter (49), the water side outlet thermometer (47) is disposed between the water side first shut-off valve (31) and the surface cooler (32), and the water side inlet thermometer (48) and the water side flow meter (49) are both disposed between the water side circulation pump (33) and the water side second shut-off valve (34).

9. The performance testing platform according to claim 1, wherein the start-up circuit further comprises a start-up stop valve (13) adjacent downstream of the plunger pump (12), the start-up stop valve (13) being in communication with an inlet conduit of the gas-side circulation pump (21), the control device (7) being configured to adjust a valve opening of the start-up stop valve (13) based on a pressure of the carbon dioxide fluid in the gas-side circuit.

10. The performance testing platform of claim 1, wherein the air side circulating pump (21) and the water side circulating pump (33) are variable frequency pumps capable of adjusting their output.

11. The performance testing platform of claim 1, further comprising a vacuum shut-off valve (51) and a vacuum pump (52), wherein the vacuum shut-off valve (51) is in communication with an outlet conduit of the plunger pump (12), and the vacuum pump (52) is in communication with the vacuum shut-off valve (51) and is configured to draw carbon dioxide fluid from the performance testing platform (100).

12. The performance test platform according to claim 1, further comprising a throttle cut-off valve (53) and a throttle valve (54), wherein the throttle cut-off valve (53) is in communication with an inlet pipe of the gas-side circulation pump (21), the throttle valve (54) is in communication with the throttle cut-off valve (53), and the control device (7) is configured to adjust a valve opening of the throttle cut-off valve (53) based on a pressure of the carbon dioxide fluid in the gas-side circuit.

13. The performance testing platform of claim 1, wherein the gas-side circuit further comprises a relief valve (26), the relief valve (26) configured to: when the pressure of the carbon dioxide fluid in the gas side loop is larger than the set pressure, the safety valve (26) is automatically opened and rapidly releases the pressure of the gas side loop.