A heat pump unit testing system and testing method

Abstract

The present application belongs to the field of heat pump unit testing, and particularly relates to a heat pump unit testing system and a testing method, comprising: a cold quantity testing system, a cold and heat quantity exchange system, a heat quantity testing system, a constant pressure system, a heat quantity adjusting system and a waste heat discharge system. The cold quantity testing system and the heat quantity testing system are used for measuring various performance parameters of the heat pump unit, the cold and heat quantity exchange system is used for exchanging the cold quantity and the heat quantity in the cold quantity testing system and the heat quantity testing system, the heat quantity adjusting system uses the residual heat which is not exchanged with the cold quantity to maintain its own temperature, uses the residual heat while ensuring that the measured heat pump unit is always in a starting state during testing, the constant pressure system is used for maintaining the required pressure of the pipeline in the heat quantity testing system, and the waste heat discharge system is used for discharging the residual heat which is not used in the testing system. The present application solves the problems of high investment and low universality of heat pump unit testing, and reduces the consumption of energy, the heat pollution and the protection of the environment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of heat pump unit testing, and particularly relates to a heat pump unit testing system and a testing method. BACKGROUND

[0002] Heat pump systems are applied in many industrial fields, and can provide an efficient solution when both cold and heat are needed in a process, and are an important means of industrial waste heat recovery and have broad development prospects.

[0003] Water source heat pump units and ground source heat pump units, which are common in heat pump systems, can utilize various industrial waste water, underground water, etc. as heat sources for heating or discharge heat to underground water, lakes, etc. for cooling as effective energy-saving means. Due to the outstanding advantages of these two types of heat pump units, people pay more and more attention to the performance of these two types of heat pump units, and whether for selection or for optimizing the performance of the unit, performance testing of the heat pump unit is needed. The current performance testing of the heat pump unit is often through external cold source or heat source testing equipment to adjust the actual situation of the heat pump unit and the required working condition for testing to test the heat pump unit.

[0004] However, in the actual testing process, the external testing equipment must be increased or decreased and functionally adjusted according to the specific situation of the heat pump unit and the testing each time, which has low universality, high investment and high operation cost, and there is also the problem of heat discharge to the surrounding environment and environmental pollution during testing. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide a heat pump unit testing system which can more conveniently, efficiently and widely carry out performance testing of water source / ground source heat pump units, and reduce heat pollution to the surrounding environment.

[0006] To achieve the above purpose, the present application adopts the following technical solutions:

[0007] A heat pump unit testing system, which comprises a cold quantity testing system I for testing the performance of the heat pump unit, a heat quantity testing system III, a waste heat discharge system VI for discharging excess heat in the testing system, and a cold-heat quantity exchange system II, one end of which is connected to the cold quantity testing system I and the other end of which is connected to the heat quantity testing system III, and the cold-heat quantity exchange system II is used to exchange all cold quantity in the cold quantity testing system I with heat quantity in the heat quantity testing system III.

[0008] Preferably, the cold quantity test system I comprises a chilled water circulation pipeline passing through the heat pump unit evaporator EV, a chilled water flow meter 12 and a chilled water pump 11 arranged on the chilled water inlet pipeline passing through the heat pump unit evaporator EV, the outlet of the chilled water pump 11 being in communication with the inlet of the chilled water flow meter 12, the temperature sensor T3 and the water pressure sensor P3 being arranged on the chilled water outlet pipeline close to the heat pump unit evaporator EV, the temperature sensor T4 and the water pressure sensor P4 being arranged on the chilled water inlet pipeline close to the heat pump unit evaporator EV; the heat quantity test system III comprises a cooling water circulation pipeline passing through the heat pump unit condenser CO, a cooling water flow meter 32 and a cooling water pump 31 arranged on the cooling water inlet pipeline passing through the heat pump unit condenser CO, the outlet of the cooling water pump 31 being in communication with the inlet of the cooling water flow meter 32, the temperature sensor T1 and the water pressure sensor P1 being arranged on the cooling water inlet pipeline close to the heat pump unit condenser CO, the temperature sensor T2 and the water pressure sensor P2 being arranged on the cooling water outlet pipeline close to the heat pump unit condenser CO; the heat quantity test system III is in communication with the waste heat discharge system VI through the heat quantity adjusting system V, the heat quantity adjusting system V being used to collect the remaining heat which fails to be exchanged in the cold heat quantity exchange system II and the cold quantity test system I, and to maintain the temperature of the heat quantity adjusting system V with part of the remaining heat, and the rest of the waste heat is discharged to the environment through the waste heat discharge system VI.

[0009] Preferably, the cold heat quantity exchange system II comprises a first heat exchanger 22, a chilled side heat exchange water pump 21 and a make-up water pump 23, the inlet of the chilled side heat exchange water pump 21 being in communication with the chilled water outlet pipeline passing through the heat pump unit evaporator EV, the outlet of the chilled side heat exchange water pump 21 being in communication with the secondary side inlet pipeline of the first heat exchanger 22, the secondary side outlet pipeline of the first heat exchanger 22 being in communication with the inlet of the chilled water pump 11; the inlet of the make-up water pump 23 being in communication with the cooling water outlet pipeline passing through the heat pump unit condenser CO, the outlet of the make-up water pump 23 being in communication with the primary side inlet pipeline of the first heat exchanger 22, the primary side outlet pipeline of the first heat exchanger 22 being in communication with the inlet of the cooling water pump 31;

[0010] Alternatively, the cold-heat exchange system II comprises a second temperature regulating valve 24, the second temperature regulating valve 24 comprises two water inlet ends and one water outlet end, the first water inlet end of the second temperature regulating valve 24 is connected with the cooling water outlet pipeline penetrating the condenser CO of the heat pump unit, the second water inlet end of the second temperature regulating valve 24 is connected with the chilled water outlet pipeline penetrating the evaporator EV of the heat pump unit, the water outlet end of the second temperature regulating valve 24 is connected with the chilled water inlet pipeline penetrating the evaporator EV of the heat pump unit, the water inlet end of the cooling water pump 31 is also connected between the second water inlet end of the second temperature regulating valve 24 and the chilled water outlet pipeline penetrating the evaporator EV of the heat pump unit; the second temperature regulating valve 24 mixes the water inlet of the first water inlet end and the second water inlet end and flows out from the water outlet end of the second temperature regulating valve 24.

[0011] Preferably, the heat regulating system V comprises a first water supplement pump 51a, a second heat exchanger 52, a cooling side heat exchange water pump 53, a constant temperature water tank 54, a first heat dissipation water pump 55a, a third heat exchanger 56 and pipelines, the water inlet end of the first water supplement pump 51a is connected with the cooling water outlet pipeline penetrating the condenser CO of the heat pump unit, the water outlet end of the first water supplement pump 51a is connected with the primary side water inlet pipeline of the second heat exchanger 52, the primary side water outlet pipeline of the second heat exchanger 52 is connected with the cooling water inlet pipeline of the water inlet end of the cooling water pump 31, the secondary side water inlet pipeline of the second heat exchanger 52 is connected with the water outlet end of the cooling side heat exchange water pump 53, the secondary side water outlet pipeline of the second heat exchanger 52 is connected with the first end water inlet pipeline of the constant temperature water tank 54, the water inlet end of the cooling side heat exchange water pump 53 is connected with the first end water outlet pipeline of the constant temperature water tank 54, the constant temperature water tank 54 is provided with a temperature sensor T6 and a heater 541, the second end water outlet pipeline of the constant temperature water tank 54 is connected with the water inlet end of the first heat dissipation water pump 55a, the water outlet end of the first heat dissipation water pump 55a is connected with the primary side water inlet pipeline of the third heat exchanger 56, the primary side water outlet pipeline of the third heat exchanger 56 is connected with the second end water inlet pipeline of the constant temperature water tank 54;

[0012] Alternatively, the heat regulating system V comprises a second water supplement pump 51b, a constant temperature water tank 54, a first heat dissipation water pump 55a, a third heat exchanger 56 and pipelines, the water inlet end of the second water supplement pump 51b is connected with the water outlet pipeline of the first end of the constant temperature water tank 54, the water outlet end of the second water supplement pump 51b is connected with the cooling water inlet pipeline of the water inlet end of the cooling water pump 31, the water inlet pipeline of the first end of the constant temperature water tank 54 is connected with the cooling water outlet pipeline passing through the condenser CO of the heat pump unit, the constant temperature water tank 54 is provided with a temperature sensor T6 and a heater 541, the water outlet pipeline of the second end of the constant temperature water tank 54 is connected with the water inlet end of the first heat dissipation water pump 55a, the water outlet end of the first heat dissipation water pump 55a is connected with the water inlet pipeline of the primary side of the third heat exchanger 56, and the water outlet pipeline of the primary side of the third heat exchanger 56 is connected with the water inlet pipeline of the second end of the constant temperature water tank 54;

[0013] The waste heat discharge system VI comprises a cooling tower water pump 61, a cooling tower 62 and pipelines, the water inlet pipeline of the cooling tower 62 is connected with the water outlet pipeline of the secondary side of the third heat exchanger 56, the water outlet pipeline of the cooling tower 62 is connected with the water inlet end of the cooling tower water pump 61, and the water outlet end of the cooling tower water pump 61 is connected with the water inlet pipeline of the secondary side of the third heat exchanger 56.

[0014] Preferably, the heat regulating system V comprises a second water supplement pump 51b, a constant temperature water tank 54, a second heat dissipation water pump 55b, a temperature sensor T5, a first temperature regulating valve 57 and pipelines, and the waste heat discharge system VI comprises a cooling tower 62 and pipelines; the water inlet end of the second water supplement pump 51b is connected with the water outlet pipeline of the first end of the constant temperature water tank 54, the water outlet end of the second water supplement pump 51b is connected with the cooling water inlet pipeline of the water inlet end of the cooling water pump 31, the water inlet pipeline of the first end of the constant temperature water tank 54 is connected with the cooling water outlet pipeline passing through the condenser CO of the heat pump unit, and the constant temperature water tank 54 is provided with a temperature sensor T6 and a heater 541; the first temperature regulating valve 57 comprises a first water inlet end, a second water inlet end and a water outlet end, the water outlet pipeline of the second end of the constant temperature water tank 54 is connected with the first water inlet end of the first temperature regulating valve 57, the water outlet end of the first temperature regulating valve 57 is connected with the water inlet end of the second heat dissipation water pump 55b, the water outlet end of the second heat dissipation water pump 55b is connected with the water inlet pipeline of the cooling tower 62, the temperature sensor T5 is arranged on the water inlet pipeline of the cooling tower 62 of the water outlet end of the second heat dissipation water pump 55b, the water outlet pipeline of the cooling tower 62 is connected with the second water inlet end of the first temperature regulating valve 57, and the water inlet pipeline of the second end of the constant temperature water tank 54 is connected between the second water inlet end of the first temperature regulating valve 57 and the water outlet pipeline of the cooling tower 62;

[0015] Or, the heat regulating system V includes a first water supplement pump 51a, a second heat exchanger 52, a cooling side heat exchange water pump 53, a constant temperature water tank 54, a second heat dissipation water pump 55b, a temperature sensor T5, a first temperature regulating valve 57 and pipelines, and the waste heat discharge system VI includes a cooling tower 62 and pipelines; the water inlet end of the first water supplement pump 51a is connected with a cooling water outlet pipeline penetrating through the condenser CO of the heat pump unit, the water outlet end of the first water supplement pump 51a is connected with a water inlet pipeline of the primary side of the second heat exchanger 52, the water outlet pipeline of the primary side of the second heat exchanger 52 is connected with a cooling water inlet pipeline of the water inlet end of the cooling water pump 31, the water inlet pipeline of the secondary side of the second heat exchanger 52 is connected with the water outlet end of the cooling side heat exchange water pump 53, the water outlet pipeline of the secondary side of the second heat exchanger 52 is connected with a water inlet pipeline of the first end of the constant temperature water tank 54, the water inlet end of the cooling side heat exchange water pump 53 is connected with a water outlet pipeline of the first end of the constant temperature water tank 54, and the constant temperature water tank 54 is provided with a temperature sensor T6 and a heater 541; the first temperature regulating valve 57 includes a first water inlet end and a second water inlet end and a water outlet end, the water outlet pipeline of the second end of the constant temperature water tank 54 is connected with the first water inlet end of the first temperature regulating valve 57, the water outlet end of the first temperature regulating valve 57 is connected with the water inlet end of the second heat dissipation water pump 55b, the water outlet end of the second heat dissipation water pump 55b is connected with a cooling tower 62 water inlet pipeline, the cooling tower 62 water inlet pipeline of the water outlet end of the second heat dissipation water pump 55b is provided with the temperature sensor T5, and the cooling tower 62 water outlet pipeline is connected with the second water inlet end of the first temperature regulating valve 57; and the water inlet pipeline of the second end of the constant temperature water tank 54 is connected between the second water inlet end of the first temperature regulating valve 57 and the cooling tower 62 water outlet pipeline.

[0016] Preferably, the heat test system III is further connected with a constant pressure system IV, the constant pressure system IV includes a constant pressure tank 41 and a communication pipeline, and the constant pressure tank 41 is used for constant pressure of the pipeline connected with the constant pressure tank 41; or the constant pressure system IV is a pressure regulating valve 42 and a water pressure sensor P5, the water pressure sensor P5 is arranged on the water inlet pipeline of the cooling water pump 31, the pressure regulating valve 42 adjusts the valve opening degree according to the water pressure sensor P5, and maintains the pressure in the pipeline connected with the pressure regulating valve 42 and the water pressure sensor P5.

[0017] The application further provides a heat pump unit test system test method, which can more efficiently and environmentally protectively complete the performance test of the heat pump unit.

[0018] S1, before the test, the cooling water circulation pipeline and the chilled water circulation pipeline of the heat test system III and the cold test system I are respectively inserted into the condenser and the evaporator of the measured heat pump unit, so that the heat regulating system V supplies heat to the heat test system III; S2, when the cooling water temperature in the heat test system III reaches the starting temperature t0, the measured heat pump unit starts, the heater 541 is turned off, and the heat regulating system V stops supplying heat to the heat test system III, and the test starts; S3, the constant pressure system IV performs constant pressure; S4, the cold test system I tests the refrigeration performance parameters of the evaporator EV of the heat pump unit under different working conditions, and the heat test system III tests the heat supply performance parameters of the condenser CO of the heat pump unit under different working conditions; S5, the cold and heat exchange system II exchanges the cold energy absorbed by the cold test system I and the heat absorbed by the heat test system III during the test; S6, the residual heat in the heat test system III which cannot be exchanged with the cold energy generated in the cold test system I in the cold and heat exchange system II to reach self-balance is brought into the heat regulating system V to provide the required heat of the heat regulating system V; S7, the waste heat which cannot be used by the heat regulating system V is brought into the waste heat discharge system VI and discharged to the environment.

[0019] Further preferably, the step S1 comprises the following steps: S111, inserting the chilled water circulation pipeline in the cold test system I into the refrigeration side of the evaporator EV of the heat pump unit, and inserting the cooling water circulation pipeline in the heat test system III into the heat supply side of the condenser CO of the heat pump unit; S112, starting the heater 541 of the constant temperature water tank 54 in the heat regulating system V to raise the water temperature in the constant temperature water tank 54; S113, transferring the heat in the constant temperature water tank 54 to the heat test system III;

[0020] The step S2 comprises the following steps: S211, when the cooling water inlet temperature t1 reaches the starting temperature t0 of the measured heat pump unit, the condenser CO of the heat pump unit starts to supply heat, and the evaporator EV of the heat pump unit starts to refrigerate; S212, controlling the start and stop of the heater 541 according to the cooling water inlet temperature t1: when t1≥t0, the heater 541 is turned off; when t1

[0021] The step S3 comprises the following steps: S311, directly setting the constant pressure tank 41 to a pressure value which makes the cooling water in the pipeline connected with the constant pressure tank 41 still liquid when the temperature exceeds 100℃;

[0022] Alternatively, the step S3 comprises the following steps: S321, adjusting the valve opening of the pressure regulating valve 42 according to the pressure value p5 measured by the water pressure sensor P5 to maintain the pressure of the pipeline in the heat test system III.

[0023] Step S4 includes the following steps: S411, according to different working conditions, the cold energy in the cold energy test system I is controlled by controlling the chilled water pump 11 to control the cold energy brought in by the chilled water circulating in and out of the evaporator EV of the heat pump unit, the water temperature of the chilled water flowing out of the evaporator EV of the heat pump unit is measured by the temperature sensor T3, the water temperature of the chilled water flowing into the evaporator EV of the heat pump unit is measured by the temperature sensor T4, the water pressure of the chilled water flowing out of the evaporator EV of the heat pump unit is measured by the water pressure sensor P3, the water pressure of the chilled water flowing into the evaporator EV of the heat pump unit is measured by the water pressure sensor P4, the water flow of the chilled water circulating in the evaporator EV of the heat pump unit is measured by the chilled water flow meter 12, and the generated cold energy of the evaporator EV of the heat pump unit is calculated by the formula: Q EV = C1p1q1(t4-t3), wherein C1 is the specific heat capacity of water at the arithmetic average temperature of t4 and t3, and p1 is the density of water at the arithmetic average temperature of t4 and t3; S412, according to different working conditions, the heat in the heat test system III is controlled by controlling the cooling water pump 31 to control the heat brought in by the cooling water circulating in and out of the condenser CO of the heat pump unit, the water temperature of the cooling water flowing out of the condenser CO of the heat pump unit is measured by the temperature sensor T2, the water temperature of the cooling water flowing into the condenser CO of the heat pump unit is measured by the temperature sensor T1, the water pressure of the cooling water flowing out of the condenser CO of the heat pump unit is measured by the water pressure sensor P2, the water pressure of the cooling water flowing into the condenser CO of the heat pump unit is measured by the water pressure sensor P1, the water flow of the cooling water circulating in the condenser CO of the heat pump unit is measured by the cooling water flow meter 32, and the generated heat of the condenser CO of the heat pump unit is calculated by the formula: Q CO = C2p2q2(t2-t1), wherein C2 is the specific heat capacity of water at the arithmetic average temperature of t2 and t1, and p2 is the density of water at the arithmetic average temperature of t2 and t1;

[0024] Further preferably, step S5 includes the following steps: S511, the cold energy in the cold energy test system I is brought into the secondary side of the first heat exchanger 22 by controlling the chilled water pump 21; S512, the corresponding heat in the heat test system III is brought into the primary side of the first heat exchanger 22 by controlling the water pump 23; S513, the cold energy and the heat in the first heat exchanger 22 are exchanged, all the cold energy in the cold energy test system I and most of the heat in the heat test system III reach self-balance in the exchange, and more than half of the heat in the heat test system is defined as most of the heat;

[0025] Or, step S5 includes the following steps: S541, the second temperature regulating valve 24 adjusts its valve opening degree according to the temperature t4 measured by the temperature sensor T4, so that the low-temperature chilled water flowing out of the cold load test system I mixes with the high-temperature water flowing into the cold load test system I, and then flows into the cold load test system I, a part of the low-temperature chilled water in the cold load test system I directly flows into the heat load test system III, so that all the cold energy in the cold load test system I and most of the heat energy in the heat load test system III reach self-balance in the exchange, and more than half of the heat energy in the heat load test system is defined as most of the heat energy;

[0026] Further preferably, steps S6 and S7 include the following steps:

[0027] S611, the remaining heat in the heat load test system III is brought into the primary side of the second heat exchanger 22 by frequency control of the first water supplement pump 51a; S612, the water in the constant-temperature water tank 54 is circulated through the secondary side of the second heat exchanger 22 by frequency control of the cooling-side heat exchange water pump 53, so as to bring the heat of the primary side of the second heat exchanger 22 into the constant-temperature water tank 54 and maintain the water temperature of the constant-temperature water tank 54; S613, the waste heat of the constant-temperature water tank 54 is brought into the primary side of the third heat exchanger 56 by frequency control of the first heat dissipation water pump 55a; S711, the waste heat of the primary side of the third heat exchanger 56 is brought into the cooling tower 62 through the cooling water circulating through the secondary side of the third heat exchanger 56 by frequency control of the cooling tower water pump 61; S712, the cooling tower 62 discharges the waste heat to the surrounding environment through evaporation heat dissipation.

[0028] Or, steps S6 and S7 include the following steps:

[0029] S621, the second water supplement pump 51b brings the constant-temperature water in the constant-temperature water tank 54 into the heat load test system III, mixes with the cooling water in the heat load test system III, is heated and warmed up after circulating through the heat pump condenser CO, and then flows back into the constant-temperature water tank 54; S622, the waste heat of the constant-temperature water tank 54 is brought into the primary side of the third heat exchanger 56 by frequency control of the first heat dissipation water pump 55a; S721, the waste heat of the primary side of the third heat exchanger 56 is brought into the cooling tower 62 through the cooling water circulating through the secondary side of the third heat exchanger 56 by frequency control of the cooling tower water pump 61; S722, the cooling tower 62 discharges the waste heat to the surrounding environment through evaporation heat dissipation.

[0030] Or, steps S6 and S7 include the following steps:

[0031] S631, the second water supplement pump 51b brings the constant temperature water in the constant temperature water tank 54 into the heat test system III, mixes with the cooling water in the heat test system III, is heated after the heat pump unit condenser CO, and then flows back into the constant temperature water tank 54; S632, the waste heat of the constant temperature water tank 54 is directly brought into the waste heat discharge system VI by the frequency conversion control second heat dissipation water pump 55b; S633, the first temperature regulating valve 57 mixes part of the low-temperature cooling water flowing out of the waste heat discharge system VI with the high-temperature cooling water flowing into the waste heat discharge system VI, to reduce the water temperature directly flowing into the waste heat discharge system VI; S731, the cooling water mixed by the first temperature regulating valve 57 directly brings the waste heat into the cooling tower 62, and is discharged to the surrounding environment.

[0032] The beneficial effects of the present application are:

[0033] (1) The heat and cold produced in the heat pump unit test are exchanged by the cold and heat exchange system of the present application, so as to achieve the self-balancing of the cold and heat in the system, effectively recycle and reuse the heat and cold produced in the test, and re-input the heat and cold into the test system, without additional heating and cooling to the cold and heat test systems, reducing the energy consumption and the waste heat discharged to the environment.

[0034] (2) When the measured heat pump unit stops working due to too low temperature, the heat regulating system of the present application supplies heat to the heat pump unit to start it; during the test, the heat regulating system of the present application also regulates the residual heat in the test system which cannot be self-balanced with the cold, and uses part of the residual heat to maintain the temperature of the heat regulating system itself, so as to ensure that the heat pump unit is always in the starting state during the test, the test process is more stable, the test data is more accurate, and the waste heat discharged to the environment is further reduced, and the operation cost is reduced.

[0035] (3) The constant pressure system of the present application makes the test object of the test system of the present application not only be the ordinary water source / ground source heat pump unit, but also be the high-temperature heat pump unit; the constant pressure system keeps the cooling water circulating in the heat test system in liquid state by pressurization, so as to avoid the vaporization of the cooling water circulating in the heat test system due to high temperature, and affect the test, the test object is more extensive, and the universality of the test system is high.

[0036] (4) The test system of the present application integrates multiple devices and pipelines into a whole, only needs to pass the cooling water circulating pipeline and the chilled water circulating pipeline of the heat test system and the cold test system of the present application through the condenser and the evaporator of the measured heat pump unit, to start the test, without the need of re-arranging the test equipment and performing function debugging according to different heat pump units, the operation is simple, and the investment cost is reduced.

[0037] (5) After connecting the heat pump unit to the test system, variables such as water flow rate can be flexibly adjusted to conduct tests under different operating conditions (such as cooling and heating), making the test content more comprehensive and the test efficiency higher.

[0038] (6) The heat transfer device in this invention can be an indirect heat transfer heat exchanger, and the heat loss during the heat transfer process makes the heat transfer process safer; the heat exchanger and the corresponding water pump can also be optimized and the pipeline can be directly connected to transfer heat by heat convection, and a temperature regulating valve can be set on the pipeline of the device that needs temperature protection to simplify the system, so as to improve the heat transfer efficiency while also taking into account safety and operating efficiency. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the first heat pump unit test system of the present invention;

[0040] Figure 2 This is a schematic diagram of the structure of the second type of heat pump unit test system of the present invention;

[0041] Figure 3 This is a schematic diagram of the third type of heat pump unit testing system of the present invention;

[0042] Figure 4 This is a schematic diagram of the fourth type of heat pump unit testing system of the present invention;

[0043] Figure 5 for Figure 1 A schematic diagram of the water flow direction in the heat testing system III and its surrounding connecting pipes;

[0044] Figure 6 for Figure 2 A schematic diagram of the water flow direction in the heat testing system III and its surrounding connecting pipes;

[0045] Figure 7 for Figure 3 Schematic diagram of water flow direction in the connecting pipeline between heat regulation system V and waste heat discharge system VI;

[0046] Figure 8 for Figure 4 Schematic diagram of water flow direction in the connecting pipes of cooling capacity testing system I and cooling and heat exchange system II;

[0047] Figure 9 For the present invention Figures 1-3 Schematic diagram of the corresponding heat pump unit test system module architecture;

[0048] Figure 10 For the present invention Figure 4 Schematic diagram of the corresponding heat pump unit test system module architecture;

[0049] The actual correspondence between the reference numerals and component names in this invention is as follows:

[0050] I - cold test system; II - cold and heat exchange system; III - heat test system; IV - constant pressure system; V - heat regulating system; VI - waste heat discharge system; 11, chilled water pump; 12, chilled water flow meter; 21, chilled side heat exchange water pump; 22, first heat exchanger; 23, water mixing pump; 24, second temperature regulating valve; 31, cooling water pump; 32, cooling water flow meter; 41, constant pressure tank; 42, pressure regulating valve; 51a, first water supplement pump; 51b, second water supplement pump; 52, second heat exchanger; 53, cooling side heat exchange water pump; 54, constant temperature water tank; 541, heater; 55a, first heat dissipation water pump; 55b, second heat dissipation water pump; 56, third heat exchanger; 57, first temperature regulating valve; 61, cooling tower water pump; 62, cooling tower; T1-T6 - temperature sensors; P1-P5 - water pressure sensors; CO - heat pump unit condenser; EV - heat pump unit evaporator; DETAILED DESCRIPTION

[0051] In order to make the technical scheme of the present application more clear and explicit, the present application is described below in connection with the drawings, and the technical features of the technical scheme of the present application obtained by equivalent replacement and routine inference by those skilled in the art without creative labor fall within the protection scope of the present application.

[0052] Example 1

[0053] The heat pump unit test system of the present application comprises the following subsystems: cold test system I, cold and heat exchange system II, heat test system III, constant pressure system IV, heat regulating system V, and waste heat discharge system VI.

[0054] The heat pump unit evaporator EV and the heat pump unit condenser CO of the heat pump unit to be tested are connected through the compressor in the heat pump unit, which is omitted in the drawing of the present application; and in order to make the drawing more clear, the evaporator EV and the condenser CO of the heat pump unit to be tested are separately listed; the heat pump unit to be tested is a water source heat pump unit or a ground source heat pump unit. Moreover, the electric energy driving the compressor of the heat pump unit to work is also converted into part of the heat produced by the heat pump unit condenser CO, so the heat produced by the heat pump unit condenser CO is greater than the cold produced by the heat pump unit evaporator EV during the operation of the present application.

[0055] The constitution of each subsystem in the present application is not unique, and the designer can select the connection according to the actual situation, and the specific constitution, connection mode and working process of each system are described below:

[0056] 1. Cold test system I

[0057] The cold test system I is used to measure various performance parameters of the heat pump unit evaporator EV.

[0058] The specific composition is as shown in Figure 1 Figure 2 , Figure 3 , Figure 4 The cold quantity test system I is same as Figure 1 . The cold quantity test system I comprises a chilled water pump 11, a chilled water flow meter 12, temperature sensors T3-T4, water pressure sensors P3-P4 and a chilled water circulation pipeline. The chilled water circulating in the chilled water circulation pipeline is an independent pipeline, and the chilled water circulation pipeline is arranged in the heat pump unit evaporator EV; the chilled water flowing through the heat pump unit evaporator EV absorbs the cold quantity generated by the heat pump unit evaporator EV, and carries the cold quantity back into the cold quantity test system I. The chilled water flow meter 12 is arranged on the chilled water inlet pipeline of the heat pump unit evaporator EV; the chilled water pump 11 is a variable frequency water pump, arranged on the chilled water inlet pipeline of the heat pump unit evaporator EV, and used for providing water circulation power in the cold quantity test system I, and the outlet of the chilled water pump 11 is connected with the inlet of the chilled water flow meter 12 in communication; the temperature sensor T3 and the water pressure sensor P3 are both arranged on the chilled water outlet pipeline close to the heat pump unit evaporator EV; the temperature sensor T4 and the water pressure sensor P4 are both arranged on the chilled water inlet pipeline close to the heat pump unit evaporator EV.

[0059] When the heat pump unit performance test is performed, the heat pump unit evaporator EV continuously generates cold quantity, and the chilled water flowing through the heat pump unit evaporator EV absorbs the cold quantity generated by the heat pump unit evaporator EV, that is, the temperature sensor T4 arranged on the chilled water inlet pipeline close to the heat pump unit evaporator EV measures the chilled water inlet temperature t4, and the water pressure sensor P4 measures the chilled water inlet water pressure p4; the temperature sensor T3 arranged on the chilled water outlet pipeline close to the heat pump unit evaporator EV measures the chilled water outlet temperature t3, and the water pressure sensor P3 measures the chilled water outlet water pressure p3; the chilled water flow meter 12 measures the chilled water flow q1; wherein t4>t3. The chilled water pump 11 is controlled by frequency conversion to control the cold quantity brought into the cold quantity test system I from the heat pump unit evaporator EV, and changing the values of the circulating chilled water flow q1 and the chilled water inlet and outlet water pressures p4 and p3 will indirectly change the values of the chilled water inlet and outlet temperatures t4 and t3, that is, the performance test of the heat pump unit evaporator EV under different conditions can be performed.

[0060] The calculation formula of the cold quantity generated by the heat pump unit evaporator EV is: Q EV =C1ρ1q1(t4-t3);

[0061] wherein, Q EV ​Q1 = C1 * ρ1 * (t4 + t3) / 2 * q1, where Q1 is the cooling capacity of the evaporator EV of the heat pump unit, C1 is the specific heat capacity of water at the arithmetic average of the temperatures t4 and t3, ρ1 is the density of water at the arithmetic average of the temperatures t4 and t3, q1 is the water flow rate measured by the chilled water flow meter 12, t3 is the temperature measured by the temperature sensor T3, and t4 is the temperature measured by the temperature sensor T4.

[0062] 2. Heat exchange system II

[0063] The heat exchange system II is used to exchange the cooling capacity absorbed by the cooling capacity test system I during the test and the heat absorbed by the heat test system III during the test. All the cooling capacity and most of the heat brought into the heat exchange system II reach self-balance, and there is no need to additionally provide a heating or refrigeration unit to maintain the stable operation of the cooling capacity test system I and the heat test system III. Here, "most of the heat" refers to the heat equal to the cooling capacity, and "most of the heat" refers to more than half of the heat in the heat test system III.

[0064] 2.1 Heat exchange system II with a first heat exchanger 22

[0065] As shown in Figure 1 , the heat exchange system II includes a chilled side heat exchange water pump 21, a first heat exchanger 22, a water mixing pump 23, and a heat exchange pipeline. In the system, the heat exchange pipeline includes a primary side pipeline and a secondary side pipeline of the first heat exchanger 22, and the two pipelines are independent and not connected to each other. Figure 2 、 Figure 3 The structure of the heat exchange system II in Figure 1 is the same as that in

[0066] The chilled water outlet pipeline passing through the evaporator EV of the heat pump unit is connected to the water inlet end of the chilled side heat exchange water pump 21, the water outlet end of the chilled side heat exchange water pump 21 is connected to the water inlet pipeline of the secondary side of the first heat exchanger 22, and the water outlet pipeline of the secondary side of the first heat exchanger 22 is connected to the water inlet end of the chilled water pump 11. The chilled side heat exchange water pump 21 is a variable frequency water pump, which is used to bring the cooling capacity of the cooling capacity test system I from the evaporator EV of the heat pump unit into the secondary side of the first heat exchanger 22.

[0067] The inlet of the water pump 23 is connected to the cooling water outlet pipe passing through the condenser CO of the heat pump unit, and the outlet of the water pump 23 is connected to the primary side inlet pipe of the first heat exchanger 22; the primary side outlet pipe of the first heat exchanger 22 is connected to the inlet pipe of the cooling water pump 31. The water pump 23 is a variable frequency water pump used to carry the heat brought by the heat testing system III from the condenser CO of the heat pump unit into the primary side of the first heat exchanger 22. The cooling capacity brought into the secondary side of the first heat exchanger 22 from the cooling capacity testing system I is controlled by the variable frequency control of the chilled side hot water pump 21, and the heat brought into the primary side of the first heat exchanger 22 from the heat testing system III is controlled by the variable frequency control of the water pump 23. Because the heat generated in the heat testing system III is more than the cooling capacity of the cooling capacity testing system I, all the cooling capacity of the cooling capacity testing system I and most of the heat of the heat testing system III are exchanged in the first heat exchanger 22, achieving a self-balance of heat and cold within the testing system of this invention.

[0068] 2.2 Heat and cold exchange system II with second temperature regulating valve 24

[0069] like Figure 4 As shown, the heat exchange system II includes a second temperature regulating valve 24, a first heat exchange pipeline, and a second heat exchange pipeline.

[0070] like Figure 8 As shown, the second temperature regulating valve 24 includes two inlet terminals, namely terminal A and terminal B2, and one outlet terminal AB2. The chilled water outlet pipe running through the evaporator EV of the heat pump unit is connected to terminal B2 of the second temperature regulating valve 24, and is also connected to branch B1. That is, the chilled water outlet pipe running through the evaporator EV of the heat pump unit is denoted as branch B. Branch B splits into two paths: one flows into branch B1, and the other flows into terminal B2. Branch B1 is connected to the cooling water inlet pipe running through the condenser CO terminal of the heat pump unit in the heat testing system III, and this section of the inlet pipe is located at the inlet terminal of the cooling water pump 31. The inlet pipe of cooling water pump 31 is also connected to the chilled water outlet pipe running through the evaporator EV of the heat pump unit; the cooling water outlet pipe running through the condenser CO of the heat pump unit is connected to end A of the second temperature regulating valve 24; end AB2 of the second temperature regulating valve 24 is connected to the chilled water inlet pipe running through the evaporator EV of the heat pump unit. The valve opening of the second temperature regulating valve 24 can mix the water inlet at end A and end B2 in different proportions before it flows out from end AB2, thus changing the outlet water temperature at end AB2. Specifically, the inlet water temperature at end A is higher than the inlet water temperature at end B2, the inlet water temperature at end B2 is higher than the inlet water temperature at end AB2, and the water temperature in end B is lower than the outlet water temperature at end AB2. The opening of the second temperature regulating valve 24 is adjusted according to the temperature t4 measured by temperature sensor T4, so that the water temperature flowing into the cooling capacity test system I is not too high, ensuring the normal operation of the evaporator EV of the heat pump unit.

[0071] As Figure 4 shown, the heat and cold exchange system II no longer exchanges heat and cold through the first heat exchanger 22 which is not connected between the primary side and the secondary side, but through the second temperature regulating valve 24 and the heat exchange pipeline to directly exchange heat through heat convection. Compared with the heat and cold exchange system II with the first heat exchanger 22, the first heat exchanger 22, the refrigeration side heat exchange water pump 21 and the water mixing pump 23 are optimized, only the second temperature regulating valve 24 is added, the system structure is simplified, and the heat transfer efficiency between the heat quantity test system III and the cold quantity test system I is improved.

[0072] 3. Heat quantity test system III

[0073] The heat quantity test system III is used for measuring various performance parameters of the heat pump unit condenser CO.

[0074] As Figure 1 shown, Figure 2 , Figure 3 , Figure 4 The heat quantity test system III in the heat quantity test system III is the same as Figure 1 . The heat quantity test system III comprises a cooling water pump 31, a cooling water flow meter 32, temperature sensors T1-T2, water pressure sensors P1-P2 and a cooling water circulation pipeline.

[0075] The cooling water circulation pipeline circulates cooling water, which is an independent pipeline. The heat quantity test system III tests various heating performance parameters of the heat pump unit condenser CO through the cooling water circulation pipeline arranged in the heat pump unit condenser CO. The cooling water flowing through the heat pump unit condenser CO absorbs the heat generated by the heat pump unit condenser CO and carries the heat back to the heat quantity test system III. The cooling water flow meter 32 is arranged on the cooling water inlet pipeline of the heat pump unit condenser CO. The cooling water pump 31 is a variable frequency water pump and is also arranged on the cooling water inlet pipeline of the heat pump unit condenser CO, which is used to provide power for water circulation in the heat quantity test system III. The outlet of the cooling water pump 31 is connected to the inlet of the cooling water flow meter 32. The temperature sensor T1 and the water pressure sensor P1 are arranged on the cooling water inlet pipeline close to the heat pump unit condenser CO. The temperature sensor T2 and the water pressure sensor P2 are arranged on the cooling water outlet pipeline close to the heat pump unit condenser CO.

[0076] When the performance of the heat pump unit is tested, the heat pump unit condenser CO continuously generates heat, and the cooling water flowing through the heat pump unit condenser CO absorbs the heat generated by the heat pump unit condenser CO, that is, the temperature sensor T1 arranged on the cooling water inlet pipeline close to the heat pump unit condenser CO measures the cooling water inlet temperature t1, and the water pressure sensor P1 measures the cooling water inlet water pressure p1; the temperature sensor T2 arranged on the cooling water outlet pipeline close to the heat pump unit condenser CO measures the cooling water outlet temperature t2, and the water pressure sensor P2 measures the cooling water outlet water pressure p2; the cooling water flow meter 32 measures the circulating cooling water flow q2; wherein t2>t1 is necessarily true. The heat brought into the heat quantity test system III from the heat pump unit condenser CO is controlled by the frequency conversion control of the cooling water pump 31, the values of the cooling water flow q2 and the cooling water inlet and outlet water pressures p1 and p2 are changed, which will indirectly change the values of the cooling water inlet and outlet temperatures t1 and t2, that is, the performance of the heat pump unit condenser CO can be tested under different conditions.

[0077] The calculation formula of the heat generated by the heat pump unit condenser CO is: Q CO =C2ρ2q2(t2-t1)

[0078] Wherein, Q CO is the heat generated by the heat pump unit condenser CO, C2 is the specific heat capacity of water at the temperature corresponding to the arithmetic average of t2 and t1, ρ2 is the density of water at the temperature corresponding to the arithmetic average of t2 and t1, q2 is the water flow measured by the cooling water flow meter 32, t1 is the temperature measured by the temperature sensor T1, and t2 is the temperature measured by the temperature sensor T2.

[0079] 4. Constant pressure system IV

[0080] The constant pressure system IV performs constant pressure on the pipeline connected thereto, so as to ensure that the cooling water in the heat quantity test system III is still in liquid state when the temperature exceeds 100℃.

[0081] 4.1 Constant pressure system IV with constant pressure tank 41

[0082] As shown in Figure 1 , the constant pressure system IV includes a constant pressure tank 41 and a communication pipeline. The constant pressure tank 41 is connected to the cooling water circulation pipeline of the heat quantity test system III through the communication pipeline, specifically, the communication pipeline of the constant pressure tank 41 is connected to the water inlet end of the cooling water pump 31.

[0083] When performing performance tests on water-source high-temperature heat pump units, the maximum temperature of the cooling water in the heat testing system III may exceed 100°C. The vaporization pressure of the cooling water increases with the temperature rise. Therefore, to ensure the cooling water remains liquid even at temperatures exceeding 100°C, it needs to be pressurized. The heat pump unit testing system of this invention can directly set the pressure tank 41 to a high pressure value (greater than one standard atmosphere). This eliminates the need to continuously adjust the parameters of the pressure tank 41 for different high-temperature heat pump units due to varying vaporization pressures. Therefore, the testing system of this invention can also be used to test water-source / ground-source high-temperature heat pump units.

[0084] 4.2 Pressure Regulating System IV with Pressure Regulating Valve 42

[0085] like Figure 2 As shown, the constant pressure system IV includes a pressure regulating valve 42, a water pressure sensor P5, and connecting pipes. Figure 3 , Figure 4 The constant pressure system IV and Figure 2 same.

[0086] A water pressure sensor P5 is installed on the cooling water inlet pipe at the inlet end of the cooling water pump 31. The inlet end of the pressure regulating valve 42 is connected to the outlet end of the cooling water circulation pipe, and the outlet end of the pressure regulating valve 42 is connected to the first inlet pipe of the constant temperature water tank. The opening degree of the pressure regulating valve 42 is controlled according to the water pressure p5 measured by the water pressure sensor P5, so that the cooling water in the cooling water circulation pipe of the heat test system III remains liquid even when the temperature exceeds 100°C, and will not affect the test due to vaporization.

[0087] 5. Heat regulation system V

[0088] Before the heat pump unit performance test begins, the heat conditioning system V supplies heat to the heat testing system III, raising the temperature of the cooling water in the cooling water circulation pipes running through the CO of the heat pump unit's condenser. When the CO end of the heat pump unit's condenser reaches the start-up temperature of the heat pump unit under test, the heat pump unit starts, and simultaneously, the heat conditioning system V stops supplying heat to the heat testing system III, thus commencing the heat pump unit performance test. After the heat pump unit performance test begins, the waste heat in the heat testing system III that cannot be exchanged with the cooling capacity generated in the cooling capacity testing system I in the heat exchange system II to achieve self-balance will enter the heat conditioning system V. Part of this waste heat will be used to maintain the temperature of the heat conditioning system V, ensuring it is not lower than the temperature of the heat conditioning system V corresponding to the start-up temperature of the heat pump unit under test, thus keeping the heat pump unit under test in operation. The other part of the unwanted waste heat will be sent to the waste heat discharge system VI.

[0089] 5.1 Heat regulation system with second heat exchanger 52 and third heat exchanger 56 V

[0090] likeFigure 1 As shown, the heat regulating system V includes a first water supplement pump 51a, a second heat exchanger 52, a cooling side heat exchange water pump 53, a constant temperature water tank 54, a heater 541, a temperature sensor T6, a first heat dissipation water pump 55a, a third heat exchanger 56, and a circulating pipeline. The circulating pipeline in the system includes the primary side pipeline and the secondary side pipeline of the second heat exchanger 52, the primary side pipeline and the secondary side pipeline of the third heat exchanger 56, the first end water inlet and outlet pipeline of the constant temperature water tank 54, and the second end water inlet and outlet pipeline of the constant temperature water tank 54. The different side pipelines of the same heat exchanger are independent and not communicated with each other.

[0091] The water inlet end of the first water supplement pump 51a is connected with the cooling water outlet pipeline arranged in the condenser CO of the heat pump unit, and the water outlet end of the first water supplement pump 51a is connected with the primary side water inlet pipeline of the second heat exchanger 52. The first water supplement pump 51a is a variable frequency water pump, which is used to bring the residual heat in the heat test system III, which cannot be exchanged with the cold energy generated in the cold test system I in the cold and heat exchange system II to reach self-balancing, into the primary side of the second heat exchanger 52. The primary side water outlet pipeline of the second heat exchanger 52 is connected with the cooling water inlet pipeline of the water inlet end of the cooling water pump 31. The secondary side water inlet pipeline of the second heat exchanger 52 is connected with the water outlet end of the cooling side heat exchange water pump 53, and the secondary side water outlet pipeline of the second heat exchanger 52 is connected with the first end water inlet pipeline of the constant temperature water tank 54. The water inlet end of the cooling side heat exchange water pump 53 is connected with the first end water outlet pipeline of the constant temperature water tank 54, and the cooling side heat exchange water pump 53 is a variable frequency water pump, which is used to provide the power for circulating the water in the constant temperature water tank 54 between the constant temperature water tank 54 and the secondary side of the second heat exchanger 52. The residual heat exchanged from the primary side to the secondary side of the second heat exchanger 52 is brought into the constant temperature water tank 54, and the residual heat is used to maintain the temperature of the constant temperature water tank 54 at a constant value.

[0092] The heater 541 and the temperature sensor T6 are arranged in the constant temperature water tank 54, the second end water outlet pipeline of the constant temperature water tank 54 is connected with the water inlet end of the first heat dissipation water pump 55a, the water outlet end of the heat dissipation water pump 55 is connected with the primary side water inlet pipeline of the third heat exchanger 56, and the primary side water outlet pipeline of the third heat exchanger 56 is connected with the second end water inlet pipeline of the constant temperature water tank 54. The first heat dissipation water pump 55a is a variable frequency water pump, which is used to provide the power for circulating the water in the constant temperature water tank 54 between the constant temperature water tank 54 and the primary side of the third heat exchanger 56, and bring the waste heat of the constant temperature water tank 54 which is not used into the primary side of the third heat exchanger 56. The waste heat of the primary side of the third heat exchanger 56 is exchanged to the secondary side. The heater 541 is closed in the testing process of the heat pump unit testing system.

[0093] 5.2 Heat regulating system V with third heat exchanger 56

[0094] As Figure 2As shown, the heat regulation system V includes a second water supply pump 51b, a constant temperature water tank 54, a heater 541, a temperature sensor T6, a first cooling water pump 55a, a third heat exchanger 56, and circulation piping. The circulation piping in this system includes the primary and secondary side piping of the third heat exchanger 56, the inlet and outlet piping at the first end of the constant temperature water tank 54, and the inlet and outlet piping at the second end of the constant temperature water tank 54; the different side piping of the third heat exchanger 56 are independent and not interconnected.

[0095] The second water replenishment pump 51b is an industrial frequency water pump. Its inlet end is connected to the first outlet pipe of the constant temperature water tank 54, and its outlet end is connected to the cooling water inlet pipe of the cooling water pump 31. The cooling water outlet pipe running through the CO of the heat pump unit condenser is connected to the first inlet pipe of the constant temperature water tank 54. The second water replenishment pump 51b is used to provide power. During the test of the heat pump unit test system, the water in the constant temperature water tank 54 is brought into the heat test system III and mixed with the cooling water in the cooling water circulation pipe. After absorbing heat through the CO end of the heat pump unit condenser, the residual heat that cannot be exchanged with the cooling capacity test system I in the heat exchange system II to achieve self-balance is carried back to the constant temperature water tank 54 through water circulation. The residual heat is used to maintain the temperature of the constant temperature water tank 54 at a constant value.

[0096] The heater 541 and temperature sensor T6 installed in the constant temperature water tank 54, as well as the connection method of the first cooling water pump 55a, the third heat exchanger 56 and the circulation pipeline connected to the second end of the constant temperature water tank 54, are the same as the heat regulation system V with the second heat exchanger 52 and the third heat exchanger 56 in 5.1, and will not be described again here.

[0097] Compared to the heat regulation system V with a second heat exchanger 52 and a third heat exchanger 56 in 5.1, the heat regulation system V with a third heat exchanger 56 no longer exchanges heat through the second heat exchanger 52, which is not connected between the primary and secondary sides, and correspondingly, the cooling side hot water pump 53 is also removed; instead, the constant temperature water tank 54 and the heat test system III are directly connected, and the first water supply pump 51a is adjusted to the second water supply pump 51b, and heat exchange is carried out through thermal convection, which simplifies the system structure and improves the heat exchange efficiency.

[0098] 5.3 Heat regulation system with first temperature regulating valve 57 V

[0099] like Figure 3 or Figure 4 As shown, the heat regulation system V includes a second water supply pump 51b, a constant temperature water tank 54, a heater 541, a temperature sensor T6, a second cooling water pump 55b, a temperature sensor T5, a first temperature regulating valve 57, and a circulation pipeline.

[0100] The connection mode between the first end water inlet and outlet pipeline of the constant temperature water tank 54 and the heat test system III and the internal setting of the constant temperature water tank 54 are the same as those of the heat adjusting system V with the third heat exchanger 56 in 5.2, and thus will not be described herein again.

[0101] As shown in Figure 7 Fig. 5, the first temperature adjusting valve 57 comprises two water inlet ends, i.e. the A end and the B2 end, and one water outlet end, i.e. the AB2 end. The second end water outlet pipeline of the constant temperature water tank 54 is connected with the A end of the first temperature adjusting valve 57, and the B2 end of the first temperature adjusting valve 57 is connected with the water inlet pipeline of the second end of the constant temperature water tank 54, which are both connected with the water outlet pipeline of the cooling tower 62, i.e. the second water inlet end of the constant temperature water tank 54 is recorded as the B1 end, and the water outlet pipeline of the cooling water pump 62 is recorded as the B pipeline, which is branched into two branches, one of which flows into the B2 end, and the other of which flows into the B1 end. The valve opening degree of the first temperature adjusting valve 57 can mix the water inlet of the A end and the water inlet of the B2 end in different proportions and then flow out from the AB2 end, so as to achieve the purpose of changing the water outlet temperature of the AB2 end. The temperature of the A end is higher than that of the AB2 end, and the temperature of the AB2 end is higher than that of the B end. The AB2 end of the first temperature adjusting valve 57 is connected with the water inlet end of the second heat dissipation water pump 55b, and the water outlet end of the second heat dissipation water pump 55b is connected with the water inlet pipeline of the cooling tower 62 in the waste heat discharge system VI. The second heat dissipation water pump 55b is a variable frequency water pump, which is used to provide power for circulating the water in the constant temperature water tank 54 between the constant temperature water tank 54 and the cooling tower 62. The temperature sensor T5 is arranged on the water inlet pipeline between the second heat dissipation water pump 55b and the cooling tower 62, and is used to detect the water temperature flowing into the cooling tower 62. The water temperature detected by the temperature sensor T5 is recorded as t5, and the valve opening degree of the first temperature adjusting valve 57 is adjusted according to the size of t5, so as to ensure that t5 < 55℃, and the water temperature directly flowing into the cooling tower 62 will not be too high.

[0102] Compared with the heat adjusting system V with the third heat exchanger 56 in 5.2, the heat adjusting system V with the first temperature adjusting valve 57 optimizes the third heat exchanger 56, further simplifies the system, and improves the heat transfer efficiency of the waste heat from the constant temperature water tank 54 to the cooling tower 62. At the same time, the first temperature adjusting valve 57 and the temperature sensor T5 are additionally arranged, the valve opening degree of the first temperature adjusting valve 57 is adjusted according to the water temperature t5 detected by the temperature sensor T5, so that the water inlet temperature of the cooling tower 62 will not be too high while the heat transfer is efficient, and the heat dissipation effect and safe operation of the cooling tower 62 are ensured.

[0103] 5.4 Heat adjusting system V with the second heat exchanger 52 and the first temperature adjusting valve 57

[0104] The heat regulating system V includes a first water supplement pump 51a, a second heat exchanger 52, a cooling side heat exchange water pump 53, a constant temperature water tank 54, a heater 541, a temperature sensor T6, a second heat dissipation water pump 55b, a temperature sensor T5, a first temperature regulating valve 57 and a circulation pipeline. The heat regulating system V is not shown in the figure.

[0105] The heater 541 and the temperature sensor T6 arranged inside the constant temperature water tank 54 of the heat regulating system V with the second heat exchanger 52 and the first temperature regulating valve 57, and the structure and connection mode between the first end water inlet and outlet pipeline of the constant temperature water tank 54 and the heat testing system III are the same as those of the heat regulating system V with the second heat exchanger 52 and the third heat exchanger 56 in 5.1; the structure and connection mode between the second end water inlet and outlet pipeline of the constant temperature water tank 54 and the second heat dissipation water pump 55b, the temperature sensor T5 and the first temperature regulating valve 57 are the same as those of the heat regulating system V with the first temperature regulating valve 57 in 5.3, which are not described herein again.

[0106] 6. Waste heat discharge system VI

[0107] The waste heat discharge system VI is used for discharging the waste heat not needed by the heat regulating system V to the surrounding environment.

[0108] 6.1 Waste heat discharge system VI connected with the third heat exchanger 56

[0109] As shown in Figure 1 or Figure 2 , the waste heat discharge system VI includes a cooling tower water pump 61, a cooling tower 62 and a circulation pipeline.

[0110] The water inlet pipeline of the cooling tower 62 is connected with the water outlet pipeline of the secondary side of the third heat exchanger 56, the water outlet pipeline of the cooling tower 62 is connected with the water inlet end of the cooling tower water pump 61, and the water outlet end of the cooling tower water pump 61 is connected with the water inlet pipeline of the secondary side of the third heat exchanger 56. The cooling tower water pump 61 is a variable frequency water pump, which is used for providing water circulation power. The cooling tower water pump 61 is controlled by frequency conversion, so that the cooling water is circulated between the secondary side of the third heat exchanger 56 and the cooling tower 62. The waste heat transferred from the primary side of the third heat exchanger 56 to the secondary side is brought into the cooling tower 62, and then is evaporated and dissipated by the cooling tower 62 to discharge the waste heat to the surrounding environment. The temperature t6 measured by the temperature sensor T6 in the constant temperature water tank 54 is maintained at a constant value.

[0111] 6.2 Waste heat discharge system VI connected with the first temperature regulating valve 57

[0112] As shown in Figure 3 or Figure 4 , the waste heat discharge system VI only includes the cooling tower 62 and the circulation pipeline.

[0113] The water inlet end of the second heat dissipation water pump 55b is connected with the water outlet end of the first temperature regulating valve 57, the water outlet end of the second heat dissipation water pump 55b is connected with the water inlet pipeline of the cooling tower 62, and a temperature sensor T5 is arranged on the pipeline between the first temperature regulating valve 57 and the cooling tower 62. The water outlet pipeline of the cooling tower 62 is connected with the B2 end of the first temperature regulating valve 57 and the second water inlet pipeline of the constant temperature water tank 54.

[0114] The second heat dissipation water pump 55b is a variable frequency water pump, which is used to provide power for circulating water in the constant temperature water tank 54 between the constant temperature water tank 54 and the cooling tower 62. By controlling the second heat dissipation water pump 55b through frequency conversion, the waste heat of the constant temperature water tank 54 is directly brought into the cooling tower 62, and then the waste heat is dissipated through evaporation of the cooling tower 62, so that the temperature t6 measured by the temperature sensor T6 in the constant temperature water tank 54 is maintained at a constant value.

[0115] The selection and connection of different structural subsystems in the heat pump unit test system will make the embodiments slightly different. Since the different structures in each subsystem and the connection modes between part of the subsystems have been described in detail above, only the connection between the subsystems not described above and the implementation modes are described below:

[0116] Before the performance test of the heat pump unit, the cooling water circulation pipeline of the heat test system III is arranged in the condenser CO of the heat pump unit, and the chilled water circulation pipeline of the cold test system I is arranged in the evaporator EV of the heat pump unit. The heater 541 in the constant temperature water tank 54 starts heating, so that the water temperature t6 measured by the temperature sensor T6 in the constant temperature water tank 54 continuously rises. The heat in the constant temperature water tank 54 is transferred to the heat test system III, that is, the heat regulating system V supplies heat to the heat test system III, so that the cooling water in the cooling water circulation pipeline arranged in the condenser CO of the heat pump unit is heated. When the temperature t1 measured by the temperature sensor T1 arranged on the cooling water inlet pipeline close to the condenser CO of the heat pump unit reaches the starting temperature t0 of the heat pump unit to be tested, the heat pump unit to be tested starts to work. At this time, t6 is the constant temperature that the constant temperature water tank 54 needs to maintain; once the heat pump unit to be tested starts to work, the heater 541 immediately stops heating, and t1≥t0 during the process.

[0117] As Figure 1 When the cold and heat exchange system II with the first heat exchanger 22, the constant pressure system IV with the constant pressure tank 41, and the heat regulating system V with the second heat exchanger 52 and the third heat exchanger 56 or the heat regulating system V with the second heat exchanger 52 and the first temperature regulating valve 57 are connected: in order to make the water flow direction in each pipeline more clear, as Figure 5As shown, the primary side outlet of the second heat exchanger 52 is marked as end A, and the outlet of the cooling water circulation pipe passing through the condenser CO of the heat pump unit is marked as end C. The cooling water flowing out from end C is divided into two branches, denoted as branch C1 and branch C2 respectively. The cooling water in branch C1 flows into the primary side inlet pipe of the second heat exchanger 52 connected to it. After heat exchange and cooling, the cooling water flows out from the primary side outlet pipe of the second heat exchanger 52 and flows to end A. The cooling water in branch C2 flows into the primary side inlet pipe of the first heat exchanger 22 connected to it, flows through the water mixing pump 23, and the cooling water flowing out from the primary side outlet pipe of the first heat exchanger 22 after heat exchange and cooling is denoted as branch B. The cooling water in branch B flows into the cooling water inlet pipe connected to it. The cooling water in branch B mixes with the cooling water flowing out from end A and flows into the inlet of the cooling water pump 31. The cooling water flowing out from the outlet of the cooling water pump 31 is denoted as branch AB. The water temperature in branch C1 is higher than that flowing out from end A, the water temperature in branch B is lower than that in branch C2, and the water temperature flowing out from end C is higher than that in branches A and B. The pressure regulating tank 41 is connected to the cooling water inlet pipe between end A and branch B, and is also connected to the inlet of the cooling water pump 31. Because the heat testing system III exchanges heat with the heat exchange system II and the heat regulation system V through indirect heat exchange via the first heat exchanger 22 and the second heat exchanger 52, the pressure regulating system IV is used to independently regulate the pressure of the heat testing system III, enabling the heat pump unit testing system of this invention to perform performance testing on high-temperature heat pump units.

[0118] When the heat exchange system II with the second temperature regulating valve 24, the pressure regulating system IV with the pressure regulating tank 41, and the heat regulating system V with the second heat exchanger 52 and the third heat exchanger 56 or the heat regulating system V with the second heat exchanger 52 and the first temperature regulating valve 57 are connected (this connection method is not shown in the figure), the pressure regulating system IV, except for regulating the pressure of the heat testing system III, has similar connections and implementation methods between other corresponding subsystems as described above, and will not be repeated here.

[0119] like Figure 2 When the heat exchange system II with the first heat exchanger 22, the constant pressure system IV with the pressure regulating valve 42, and the heat regulation system V with the third heat exchanger 56 or the heat regulation system V with the first temperature regulating valve 57 are connected: to make the water flow direction in each pipeline clearer, such as Figure 6As shown, the outlet end of the second water supplement pump 51b is marked as A end, and its inlet end is connected with the first end outlet pipeline of the constant temperature water tank 54, that is, the water in the first end outlet pipeline of the constant temperature water tank 54 flows out from the A end; the outlet end of the cooling water circulation pipeline passing through the condenser CO of the heat pump unit is marked as C end, the cooling water flowing out from the C end is divided into two branches, marked as C1 branch and C2 branch respectively, the cooling water in the C1 branch flows into the first end inlet pipeline of the constant temperature water tank 54, and then flows into the constant temperature water tank 54 after passing through the pressure regulating valve 42 arranged on the first end inlet pipeline of the constant temperature water tank 54; the cooling water in the C2 branch flows into the first heat exchanger 22 one-side inlet pipeline connected therewith, and then flows through the water supplement pump 23, and then flows out from the first heat exchanger 22 one-side outlet pipeline, and the cooling water is marked as B road; the cooling water of the B road flows into the cooling water inlet pipeline connected therewith; after the cooling water of the B road mixes with the cooling water flowing out from the A end, the mixed cooling water flows through the water pressure sensor P5, and then flows into the inlet end of the cooling water pump 31; the cooling water flowing out from the outlet end of the cooling water pump 31 is marked as AB road. The water temperature of the C end is higher than that of the AB road, the water temperature of the C1 branch is higher than that of the A end, and the water temperature of the B road is lower than that of the C2 branch. The water pressure sensor P5 is used for testing the water pressure of the inlet end of the cooling water pump 31, the pressure regulating valve 42 is arranged between the heat testing system III and the heat regulating system V, and the cooling and heat exchanging system II of the connection mode is indirectly exchanged through the first heat exchanger 22, so that the constant pressure system IV not only performs constant pressure on the heat testing system III, but also at least affects the pressure of the heat regulating system V. However, the role of the constant pressure system IV is still to enable the heat pump unit testing system of the application to test the performance of the high-temperature heat pump unit.

[0120] When the cooling and heat exchanging system II with the second temperature regulating valve 24, the constant pressure system IV with the pressure regulating valve 42, and the heat regulating system V with the third heat exchanger 56 or the heat regulating system V with the first temperature regulating valve 57 are connected (the connection mode is not shown in the figure), the constant pressure system IV not only performs constant pressure on the heat testing system III, but also has similar connection and implementation mode between other corresponding subsystems as the above connection mode, which will not be described here.

[0121] As Figure 1 and Figure 2 When the heat regulating system V with the third heat exchanger 56 or the heat regulating system V with the second heat exchanger 52 and the third heat exchanger 56, and the waste heat discharge system VI connected with the third heat exchanger 56 are connected, the specific connection and implementation mode has been described in the structure part of each subsystem, which will not be described here.

[0122] As Figure 3When a heat regulation system V with a first temperature regulating valve 57 or a heat regulation system V with a second heat exchanger 52 and a first temperature regulating valve 57 is connected to a waste heat discharge system VI connected to the first temperature regulating valve 57: Figure 4 This section connects to Figure 3 Similarly, to make the water flow direction in each pipe clearer, such as Figure 7 As shown above, the heat regulation system with first temperature regulating valve 57 has been described in detail in section 5.3 above, and will not be repeated here.

[0123] like Figure 4 When the cooling capacity testing system I, the heat exchange system II with a second temperature regulating valve 24, the heat testing system III, and the constant pressure system IV with a pressure regulating valve 42 are connected: to make the water flow direction in each pipeline clearer, such as Figure 8 As shown above, the description of the heat exchange system II with the second temperature regulating valve 24 has been described in detail in section 2.2 above, and will not be repeated here. It is only emphasized that: the cooling water outlet pipe that runs through the condenser CO of the heat pump unit is connected to end A of the second temperature regulating valve 24, that is, the water inlet of end A of the second temperature regulating valve 24 comes from the cooling water outlet that runs through the condenser CO of the heat pump unit; the outlet of the second makeup water pump 51b is connected between the cooling water inlet pipe of the B1 branch and the cooling water inlet pipe of the cooling water pump 31, that is, the water flowing out of the B1 branch mixes with the water flowing out of the outlet of the second makeup water pump 51b and flows into the inlet of the cooling water pump 31, and then flows out from the outlet of the cooling water pump 31 and enters the cooling water inlet pipe that runs through the condenser CO of the heat pump unit.

[0124] When the cooling capacity testing system I, the heat exchange system II with the second temperature regulating valve 24, the heat testing system III, and the pressure-regulating system IV with the pressure-regulating tank 41 are connected (not shown in the figure), the difference from the connection method described in the previous paragraph is that the pressure-regulating tank 41 is connected between the B1 branch and the cooling water inlet pipe of the cooling water pump 31. The pressure-regulating tank 41 only regulates the pressure of the pipe connected to it. The water in the pipe connected to the cooling water pump 31 will all flow into the cooling water pump 31 inlet, mix, and then flow out from the cooling water pump 31 outlet. Other parts will not be described in detail.

[0125] The above are as follows Figures 1-3 The schematic diagram of the heat pump unit test system module architecture corresponding to the connection method is as follows: Figure 9 As shown; Figure 4 The schematic diagram of the heat pump unit test system module architecture corresponding to the connection method is as follows: Figure 10The heat pump unit test system of the present application integrates multiple devices and pipelines into a whole, and only needs to pass the cooling water circulation pipeline and the chilled water circulation pipeline of the heat test system III and the cold test system I through the condenser and the evaporator of the measured heat pump unit to complete the test preparation, without the need to re-arrange the test equipment and perform function debugging according to different heat pump units, so that the operation is simple and the early-stage investment is reduced. The test system can test the water source or ground source heat pump unit under different working conditions, such as refrigeration, heating, flexible adjustment of water flow rate and the like, has high universality, and the test content is more comprehensive. Without the need to disassemble and assemble the external test equipment of the measured heat pump unit multiple times, the test system can be connected with the measured heat pump unit once to perform different working condition tests, so that the test efficiency is high. The performance of the water source / ground source high-temperature heat pump unit can be tested through the pressurizing effect of the constant pressure system IV. The heat generated in the test is effectively recycled by the heat exchange system II and the heat regulation system V, that is, the heat originally directly discharged to the environment is re-injected into the test system to maintain the operation of the test system, and only the remaining waste heat is discharged to the surrounding environment, so that the additional heating or refrigeration of the test system is reduced, the energy is saved, and the heat pollution to the surrounding environment is greatly reduced. In the heat exchange system II and the heat regulation system V of the present application, not only heat exchangers can be used for heat exchange, but also heat can be directly transferred through the thermal convection of the temperature regulating valve, so that the system is simplified, the heat transfer efficiency is higher, and the safety is ensured.

[0126] Embodiment 2

[0127] The test method of the heat pump unit test system of the present application is described in correspondence with the first heat pump unit test system of the present application and Figures 1-4 Embodiment 1. Figure 1 The specific steps are as follows:

[0128] S1, before the test starts, the cooling water circulation pipeline and the chilled water circulation pipeline of the heat test system III and the cold test system I are passed through the condenser and the evaporator of the measured heat pump unit respectively, so that the heat regulation system V supplies heat to the heat test system III;

[0129] S111, the chilled water circulation pipeline of the cold test system I is passed through the heat pump unit evaporator EV, and the cooling water circulation pipeline of the heat test system III is passed through the heat pump unit condenser CO; S112, the heater 541 is started to increase the water temperature in the constant temperature water tank 54; S113, the heat in the constant temperature water tank 54 is brought into the heat test system III;

[0130] S2, when the cooling water temperature in the heat test system III reaches the starting temperature t0, the measured heat pump unit is started, the heater 541 is turned off, the heat regulation system V stops supplying heat to the heat test system III, and the test starts:

[0131] S211, when the temperature sensor T1 measured cooling water inlet temperature t1 reaches the measured heat pump unit start temperature t0, the heat pump unit condenser CO starts heating, and the heat pump unit evaporator EV starts refrigeration; S212, according to the cooling water inlet temperature t1 control heater 541 start-stop: when t1≥t0, the heater 541 is closed; when t1

[0132] S3, the constant pressure system IV carries out constant pressure:

[0133] S311, directly set the constant pressure tank 41 to the following pressure value: the pressure value makes the cooling water in the pipeline connected with the constant pressure tank 41 still liquid when it exceeds 100℃;

[0134] S4, the cold quantity test system I tests the refrigeration performance parameters of the heat pump unit evaporator EV under different working conditions, and the heat quantity test system III tests the heat supply performance parameters of the heat pump unit condenser CO under different working conditions:

[0135] S411, according to different working conditions, the frequency conversion control refrigerated water pump 11 is used to control the circulating refrigerated water into and out of the heat pump unit evaporator EV to bring the cold quantity into the cold quantity test system I, the temperature sensor T3 measures the water temperature t3 of the refrigerated water flowing out of the heat pump unit evaporator EV, the temperature sensor T4 measures the water temperature t4 of the refrigerated water flowing into the heat pump unit evaporator EV, the water pressure sensor P3 measures the water pressure p3 of the refrigerated water flowing out of the heat pump unit evaporator EV, the water pressure sensor P4 measures the water pressure p4 of the refrigerated water flowing into the heat pump unit evaporator EV, and the refrigerated water flow meter 12 measures the water flow q1 of the refrigerated water circulating in the heat pump unit evaporator EV, and the generated cold quantity of the heat pump unit evaporator EV is calculated by the formula: Q EV =C1ρ1q1(t4-t3), wherein C1 is the specific heat capacity of water at the arithmetic average value of t4 and t3, and ρ1 is the density of water at the arithmetic average value of t4 and t3;

[0136] S412, according to different working conditions, the heat brought into the heat test system III by the cooling water pump 31 is controlled by frequency conversion, the temperature sensor T2 measures the water temperature t2 of the cooling water flowing out of the heat pump unit condenser CO, the temperature sensor T1 measures the water temperature t1 of the cooling water flowing into the heat pump unit condenser CO, the water pressure sensor P2 measures the water pressure p2 of the cooling water flowing out of the heat pump unit condenser CO, the water pressure sensor P1 measures the water pressure p1 of the cooling water flowing into the heat pump unit condenser CO, and the cooling water flow meter 32 measures the water flow q2 of the cooling water circulating in the heat pump unit condenser CO, and the heat generated by the heat pump unit condenser CO is calculated by the formula: Q CO =C2ρ2q2(t2-t1), wherein C2 is the specific heat capacity of water at the arithmetic average temperature of t2 and t1, and ρ2 is the density of water at the arithmetic average temperature of t2 and t1;

[0137] S5, the cold heat exchange system II exchanges the cold energy absorbed by the cold test system I during the test and the heat absorbed by the heat test system III during the test:

[0138] S511, the cold energy in the cold test system I is brought into the secondary side of the first heat exchanger 22 by frequency conversion control of the refrigeration side heat exchange water pump 21; S512, the corresponding heat in the heat test system III is brought into the primary side of the first heat exchanger 22 by frequency conversion control of the water pump 23; S513, the cold energy and the heat in the first heat exchanger 22 are exchanged, all the cold energy in the cold test system I and most of the heat in the heat test system III reach self-balancing in the exchange, and more than half of the heat in the heat test system is defined as most of the heat;

[0139] S6, the residual heat in the heat test system III that cannot be exchanged with the cold energy generated in the cold test system I in the cold heat exchange system II to reach self-balancing is brought into the heat regulation system V to provide the heat required by the heat regulation system V:

[0140] S611, the residual heat in the heat test system III is brought into the primary side of the second heat exchanger 22 by frequency conversion control of the first water pump 51a; S612, the water in the constant temperature water tank 54 is circulated through the secondary side of the second heat exchanger 22 by frequency conversion control of the cooling side heat exchange water pump 53 to bring the heat on the primary side of the second heat exchanger 22 into the constant temperature water tank 54 to maintain the water temperature of the constant temperature water tank 54; S613, the waste heat not used by the constant temperature water tank 54 is brought into the primary side of the third heat exchanger 56 by frequency conversion control of the first heat dissipation water pump 55a;

[0141] S7, the waste heat not used by the heat regulation system V is brought into the waste heat discharge system VI and discharged to the environment:

[0142] S711, the waste heat of the primary side of the third heat exchanger 56 is brought into the cooling tower 62 through the circulating cooling water of the secondary side of the third heat exchanger 56 by frequency control of the cooling tower water pump 61; S712, the cooling tower 62 discharges the waste heat to the ambient environment through evaporation heat dissipation.

[0143] As Figure 2 The second heat pump unit test system, the test method specific steps are different from the test method of the second heat pump unit test system as follows:

[0144] S321, the pressure regulating valve 42 adjusts the valve opening according to the pressure value p5 measured by the water pressure sensor P5, and maintains the pressure of the pipeline in the heat test system III;

[0145] S621, the second water supplement pump 51b brings the constant temperature water in the constant temperature water tank 54 into the heat test system III, mixes with the cooling water in the heat test system III, and then flows back into the constant temperature water tank 54 after being heated and warmed by the heat pump condenser CO; S622, the waste heat of the constant temperature water tank 54 is brought into the primary side of the third heat exchanger 56 by frequency control of the first heat dissipation water pump 55a.

[0146] As Figure 3 The third heat pump unit test system, the test method specific steps are different from the test method of the second heat pump unit test system as follows:

[0147] S631, the second water supplement pump 51b brings the constant temperature water in the constant temperature water tank 54 into the heat test system III, mixes with the cooling water in the heat test system III, and then flows back into the constant temperature water tank 54 after being heated and warmed by the heat pump condenser CO; S632, the waste heat of the constant temperature water tank 54 is directly brought into the waste heat discharge system VI by frequency control of the second heat dissipation water pump 55b; S633, the first temperature regulating valve 57 mixes part of the low-temperature cooling water flowing out of the waste heat discharge system VI with the high-temperature cooling water flowing into the waste heat discharge system VI, to reduce the water temperature directly flowing into the waste heat discharge system VI;

[0148] S731, the cooling water mixed by the first temperature regulating valve 57 directly brings the waste heat into the cooling tower 62 and discharges it to the ambient environment.

[0149] As Figure 4 The fourth heat pump unit test system, the test method specific steps are different from the test method of the third heat pump unit test system as follows:

[0150] S341, the pressure regulating valve 42 adjusts its valve opening according to the pressure value p5 measured by the water pressure sensor P5, so as to maintain the pressure of the pipeline in the heat test system III, the cold test system I and the cold-heat exchange system II;

[0151] S541, the second temperature regulating valve 24 adjusts its valve opening according to the temperature value t4 measured by the temperature sensor T4, so as to make the low-temperature chilled water flowing out of the cold test system I mix with the high-temperature water flowing into the cold test system I, and then flow into the cold test system I, and a part of the low-temperature chilled water in the cold test system I directly flows into the heat test system III, so that all the cold energy in the cold test system I and most of the heat energy in the heat test system III reach self-balance in the exchange, and more than half of the heat energy in the heat test system III is defined as the most heat energy.

[0152] The technologies, shapes and structural parts not described in detail in the present application are all known technologies. The decomposition and / or recombination of each component or each step in the embodiments of the present application should be considered as equivalent solutions of the present application, and should fall within the protection scope of the present application.

Claims

1. A testing method of a heat pump unit testing system, applied to a heat pump unit testing system, the testing system comprising a cooling capacity testing system (I) for testing the performance of a heat pump unit, a heating capacity testing system (III) and a waste heat discharge system (VI) for discharging excess heat in the discharge testing system, characterized in that: The cold-heat exchange system (II) is communicated with the cold quantity test system (I) at one end and communicated with the heat quantity test system (III) at the other end, and is used for exchanging all cold quantity in the cold quantity test system (I) with heat in the heat quantity test system (III); The cold quantity test system (I) comprises a chilled water circulation pipeline penetrating the heat pump unit evaporator EV, a chilled water flow meter (12) and a chilled water pump (11) arranged on a chilled water inlet pipeline penetrating the heat pump unit evaporator EV, a temperature sensor T3 and a water pressure sensor P3 arranged on a chilled water outlet pipeline close to the heat pump unit evaporator EV, and a temperature sensor T4 and a water pressure sensor P4 arranged on a chilled water inlet pipeline close to the heat pump unit evaporator EV. The heat quantity test system (III) comprises a cooling water circulation pipeline penetrating the heat pump unit condenser CO, a cooling water flow meter (32) and a cooling water pump (31) arranged on a cooling water inlet pipeline penetrating the heat pump unit condenser CO, a temperature sensor T1 and a water pressure sensor P1 arranged on a cooling water inlet pipeline close to the heat pump unit condenser CO, and a temperature sensor T2 and a water pressure sensor P2 arranged on a cooling water outlet pipeline close to the heat pump unit condenser CO. The heat quantity test system (III) is communicated with the waste heat discharge system (VI) through a heat adjusting system (V), the heat adjusting system (V) is used for collecting the remaining heat which is unable to be exchanged in the cold quantity test system (I) and the heat quantity test system (III) and maintaining the temperature of the heat adjusting system (V) by using part of the remaining heat, and the rest of the waste heat is discharged to the environment through the waste heat discharge system (VI). The cold-heat exchange system (II) comprises a first heat exchanger (22), a chilled side heat exchange water pump (21) and a water mixing pump (23), the chilled side heat exchange water pump (21) is communicated with a chilled water outlet pipeline penetrating the heat pump unit evaporator EV at an inlet end, the chilled side heat exchange water pump (21) is communicated with a second side inlet pipeline of the first heat exchanger (22) at an outlet end, and the second side outlet pipeline of the first heat exchanger (22) is communicated with an inlet end of the chilled water pump (11); the water mixing pump (23) is communicated with a cooling water outlet pipeline penetrating the heat pump unit condenser CO at an inlet end, an outlet end of the water mixing pump (23) is communicated with a first side inlet pipeline of the first heat exchanger (22), and the first side outlet pipeline of the first heat exchanger (22) is communicated with an inlet end of the cooling water pump (31). Or, the cold heat exchange system (II) includes a second temperature regulating valve (24), the second temperature regulating valve (24) includes two water inlet ends and a water outlet end, the first water inlet end of the second temperature regulating valve (24) is communicated with the cooling water outlet pipeline penetrating the heat pump unit condenser CO, the second water inlet end of the second temperature regulating valve (24) is communicated with the chilled water outlet pipeline penetrating the heat pump unit evaporator EV, the water outlet end of the second temperature regulating valve (24) is communicated with the chilled water inlet pipeline penetrating the heat pump unit evaporator EV, the water inlet end of the cooling water pump (31) is also communicated between the second water inlet end of the second temperature regulating valve (24) and the chilled water outlet pipeline penetrating the heat pump unit evaporator EV; The second temperature regulating valve (24) mixes the water inlet of the first water inlet end and the second water inlet end and flows out from the water outlet end of the second temperature regulating valve (24); The heat regulating system (V) includes a first water supplement pump (51a), a second heat exchanger (52), a cooling side heat exchange water pump (53), a constant temperature water tank (54), a first heat dissipation water pump (55a), a third heat exchanger (56) and a pipeline, the water inlet end of the first water supplement pump (51a) is communicated with the cooling water outlet pipeline penetrating the heat pump unit condenser CO, the water outlet end of the first water supplement pump (51a) is communicated with the primary side water inlet pipeline of the second heat exchanger (52), the primary side water outlet pipeline of the second heat exchanger (52) is communicated with the cooling water inlet pipeline of the water inlet end of the cooling water pump (31), the secondary side water inlet pipeline of the second heat exchanger (52) is communicated with the water outlet end of the cooling side heat exchange water pump (53), the secondary side water outlet pipeline of the second heat exchanger (52) is communicated with the first end water inlet pipeline of the constant temperature water tank (54), the water inlet end of the cooling side heat exchange water pump (53) is communicated with the first end water outlet pipeline of the constant temperature water tank (54), the constant temperature water tank (54) is provided with a temperature sensor T6 and a heater (541), the second end water outlet pipeline of the constant temperature water tank (54) is communicated with the water inlet end of the first heat dissipation water pump (55a), the water outlet end of the first heat dissipation water pump (55a) is communicated with the primary side water inlet pipeline of the third heat exchanger (56), the primary side water outlet pipeline of the third heat exchanger (56) is communicated with the second end water inlet pipeline of the constant temperature water tank (54); Alternatively, the heat regulating system (V) comprises a second water supplement pump (51b), a constant temperature water tank (54), a first heat dissipation water pump (55a), a third heat exchanger (56) and pipelines, the water inlet end of the second water supplement pump (51b) is connected with the water outlet pipeline of the first end of the constant temperature water tank (54), the water outlet end of the second water supplement pump (51b) is connected with the cooling water inlet pipeline of the water inlet end of the cooling water pump (31), the water inlet pipeline of the first end of the constant temperature water tank (54) is connected with the cooling water outlet pipeline passing through the condenser CO of the heat pump unit, the constant temperature water tank (54) is provided with a temperature sensor T6 and a heater (541), the water outlet pipeline of the second end of the constant temperature water tank (54) is connected with the water inlet end of the first heat dissipation water pump (55a), the water outlet end of the first heat dissipation water pump (55a) is connected with the water inlet pipeline of the primary side of the third heat exchanger (56), and the water outlet pipeline of the primary side of the third heat exchanger (56) is connected with the water inlet pipeline of the second end of the constant temperature water tank (54); The waste heat discharge system (VI) comprises a cooling tower water pump (61), a cooling tower (62) and pipelines, the water inlet pipeline of the cooling tower (62) is connected with the water outlet pipeline of the secondary side of the third heat exchanger (56), the water outlet pipeline of the cooling tower (62) is connected with the water inlet end of the cooling tower water pump (61), and the water outlet end of the cooling tower water pump (61) is connected with the water inlet pipeline of the secondary side of the third heat exchanger (56). Or, the heat regulating system (V) comprises a second water supplement pump (51b), a constant temperature water tank (54), a second heat dissipation water pump (55b), a temperature sensor T5, a first temperature regulating valve (57) and pipelines, and the waste heat discharging system (VI) comprises a cooling tower (62) and pipelines; the water inlet end of the second water supplement pump (51b) is connected with the water outlet pipeline of the first end of the constant temperature water tank (54), the water outlet end of the second water supplement pump (51b) is connected with the cooling water inlet pipeline of the water inlet end of the cooling water pump (31), the water inlet pipeline of the first end of the constant temperature water tank (54) is connected with the cooling water outlet pipeline passing through the condenser CO of the heat pump unit, and the constant temperature water tank (54) is provided with a temperature sensor T6 and a heater (541); the first temperature regulating valve (57) comprises a first water inlet end, a second water inlet end and a water outlet end, the water outlet pipeline of the second end of the constant temperature water tank (54) is connected with the first water inlet end of the first temperature regulating valve (57), the water outlet end of the first temperature regulating valve (57) is connected with the water inlet end of the second heat dissipation water pump (55b), the water outlet end of the second heat dissipation water pump (55b) is connected with the cooling tower (62) water inlet pipeline, the cooling tower (62) water inlet pipeline of the water outlet end of the second heat dissipation water pump (55b) is provided with the temperature sensor T5, the water outlet pipeline of the cooling tower (62) is connected with the second water inlet end of the first temperature regulating valve (57), and the water inlet pipeline of the second end of the constant temperature water tank (54) is connected between the second water inlet end of the first temperature regulating valve (57) and the water outlet pipeline of the cooling tower (62); Or, the heat regulation system (V) includes a first water supplement pump (51a), a second heat exchanger (52), a cooling side heat exchange water pump (53), a constant temperature water tank (54), a second heat dissipation water pump (55b), a temperature sensor T5, a first temperature regulation valve (57), and pipelines, and the waste heat discharge system (VI) includes a cooling tower (62) and pipelines; the water inlet end of the first water supplement pump (51a) is connected with a cooling water outlet pipeline penetrating the condenser CO of the heat pump unit, the water outlet end of the first water supplement pump (51a) is connected with a water inlet pipeline of the primary side of the second heat exchanger (52), the water outlet pipeline of the primary side of the second heat exchanger (52) is connected with a cooling water inlet pipeline of the water inlet end of the cooling water pump (31), the water inlet pipeline of the secondary side of the second heat exchanger (52) is connected with the water outlet end of the cooling side heat exchange water pump (53), the water outlet pipeline of the secondary side of the second heat exchanger (52) is connected with a water inlet pipeline of the first end of the constant temperature water tank (54), the water inlet end of the cooling side heat exchange water pump (53) is connected with a water outlet pipeline of the first end of the constant temperature water tank (54), and the constant temperature water tank (54) is provided with a temperature sensor T6 and a heater (541); the first temperature regulation valve (57) includes a first water inlet end and a second water inlet end and a water outlet end, the water outlet pipeline of the second end of the constant temperature water tank (54) is connected with the first water inlet end of the first temperature regulation valve (57), the water outlet end of the first temperature regulation valve (57) is connected with the water inlet end of the second heat dissipation water pump (55b), the water outlet end of the second heat dissipation water pump (55b) is connected with a water inlet pipeline of the cooling tower (62), the temperature sensor T5 is arranged on the water inlet pipeline of the cooling tower (62) of the water outlet end of the second heat dissipation water pump (55b), and the water outlet pipeline of the cooling tower (62) is connected with the second water inlet end of the first temperature regulation valve (57); the water inlet pipeline of the second end of the constant temperature water tank (54) is connected between the second water inlet end of the first temperature regulation valve (57) and the water outlet pipeline of the cooling tower (62); Or, the heat test system (III) is also connected with a constant pressure system (IV), and the constant pressure system (IV) includes a constant pressure tank (41) and a communication pipeline, and the constant pressure tank (41) is used for constant pressure of the pipeline connected with the constant pressure tank (41); Or the constant pressure system (IV) is a pressure regulating valve (42) and a water pressure sensor P5, the water pressure sensor P5 is arranged on the water inlet pipeline of the cooling water pump (31), the pressure regulating valve (42) adjusts the valve opening degree according to the water pressure sensor P5, and maintains the pressure in the pipeline connected with the pressure regulating valve (42) and the water pressure sensor P5; The test method includes the following contents: S1, before the test starts, the cooling water circulation pipeline and the refrigeration water circulation pipeline of the heat test system (III) and the cold test system (I) are respectively penetrated in the condenser and the evaporator of the heat pump unit to be tested, so that the heat regulation system (V) supplies heat to the heat test system (III); S2, when the temperature of cooling water in the heat test system (III) reaches the starting temperature t0, the heat pump unit to be tested starts, the heater (541) is turned off, and the heat regulating system (V) stops supplying heat to the heat test system (III), and the test begins; S3, the constant pressure system (IV) performs constant pressure; S4, the cold test system (I) tests the refrigeration performance parameters of the heat pump unit evaporator EV under different working conditions, and the heat test system (III) tests the performance parameters of the heat pump unit condenser CO under different working conditions; S5, the cold heat exchange system (II) exchanges the cold energy absorbed by the cold test system (I) during the test and the heat absorbed by the heat test system (III) during the test; S6, the residual heat in the heat test system (III) that cannot be exchanged with the cold energy generated in the cold test system (I) in the cold heat exchange system (II) to reach self-balance is brought into the heat regulating system (V) to provide the heat required by the heat regulating system (V); S7, the waste heat that cannot be used by the heat regulating system (V) is brought into the waste heat discharge system (VI) to be discharged to the environment; Step S1 includes the following steps: S111, the chilled water circulation pipeline in the cold test system (I) is arranged through the refrigeration side of the heat pump unit evaporator EV, and the cooling water circulation pipeline in the heat test system (III) is arranged through the heat supply side of the heat pump unit condenser CO; S112, the heater (541) of the constant temperature water tank (54) in the heat regulating system (V) is started to raise the water temperature in the constant temperature water tank (54); S113, the heat in the constant temperature water tank (54) is transferred to the heat test system (III); Step S2 includes the following steps: S211, when the cooling water inlet temperature t1 reaches the starting temperature t0 of the heat pump unit to be tested, the heat pump unit condenser CO starts to supply heat, and the heat pump unit evaporator EV starts to refrigerate; S212, the heater (541) is controlled to start and stop according to the cooling water inlet temperature t1: when t1≥t0, the heater (541) is turned off; when t1 Step S3 includes the following steps: S311, the constant pressure tank (41) is directly set to a pressure value that makes the cooling water in the pipeline connected with the constant pressure tank (41) still liquid when the temperature exceeds 100℃; Alternatively, step S3 includes the following steps: S321, the pressure regulating valve (42) adjusts the valve opening according to the pressure value p5 measured by the water pressure sensor P5 to maintain the pressure of the pipeline in the heat test system (III); Step S4 includes the following steps: S411, according to different working conditions, through the variable frequency control of the chilled water pump (11) to control the cold quantity of the chilled water circulating in and out of the heat pump unit evaporator EV into the cold quantity test system (I), the temperature sensor T3 measures the water temperature of the chilled water flowing out of the heat pump unit evaporator EV as t3, the temperature sensor T4 measures the water temperature of the chilled water flowing into the heat pump unit evaporator EV as t4, the water pressure sensor P3 measures the water pressure of the chilled water flowing out of the heat pump unit evaporator EV as p3, the water pressure sensor P4 measures the water pressure of the chilled water flowing into the heat pump unit evaporator EV as p4, the chilled water flow meter (12) measures the water flow of the chilled water circulating in the heat pump unit evaporator EV as q1, and the generated cold quantity of the heat pump unit evaporator EV is calculated by the formula: Q EV =C1ρ1q1(t4-t3), wherein C1 is the specific heat capacity of water at the arithmetic average temperature of t4 and t3, and ρ1 is the density of water at the arithmetic average temperature of t4 and t3. S412, according to different working conditions, through the variable frequency control cooling water pump (31) to control the circulating into and out of the heat pump unit condenser CO cooling water into the heat test system (III) heat, temperature sensor T2 measured cooling water out of the heat pump unit condenser CO water temperature t2, temperature sensor T1 measured cooling water into the heat pump unit condenser CO water temperature t1, water pressure sensor P2 measured cooling water out of the heat pump unit condenser CO water pressure p2, water pressure sensor P1 measured cooling water into the heat pump unit condenser CO water pressure p1, cooling water flow meter 32 measured cooling water circulation in the heat pump unit condenser CO water flow q2, the heat generated by the heat pump unit condenser CO is calculated by the formula: Q CO =C2ρ2q2(t2-t1), wherein C2 is the arithmetic mean of t2 and t1 corresponding to the temperature of the specific heat capacity of water, ρ2 is the arithmetic mean of t2 and t1 corresponding to the temperature of the density of water; Step S5 includes the following steps: S511, the cold quantity in the cold quantity test system (I) is brought into the secondary side of the first heat exchanger (22) by controlling the refrigeration side heat exchange water pump (21) through frequency conversion; S512, the corresponding heat quantity in the heat quantity test system (III) is brought into the primary side of the first heat exchanger (22) by controlling the water mixing pump (23) through frequency conversion; S513, the cold quantity and the heat quantity exchange in the first heat exchanger (22), all cold quantities in the cold quantity test system (I) and most of the heat quantities in the heat quantity test system (III) reach self-balancing in the exchange, and more than half of the heat quantities in the heat quantity test system are defined as most of the heat quantities; Alternatively, step S5 includes the following steps: S541, the second temperature adjusting valve (24) adjusts the valve opening degree according to the temperature t4 measured by the temperature sensor T4, so that part of the low-temperature chilled water in the cold quantity test system (I) is mixed with the high-temperature water flowing into the cold quantity test system (I) and then flows into the cold quantity test system (I), and part of the low-temperature chilled water in the cold quantity test system (I) directly flows into the heat quantity test system (III), so that all cold quantities in the cold quantity test system (I) and most of the heat quantities in the heat quantity test system (III) reach self-balancing in the exchange, and more than half of the heat quantities in the heat quantity test system are defined as most of the heat quantities; Steps S6 and S7 include the following steps: S611, the residual heat in the heat quantity test system (III) is brought into the primary side of the second heat exchanger (22) by controlling the first water supplementing pump (51a) through frequency conversion; S612, the water in the constant-temperature water tank (54) is circulated through the secondary side of the second heat exchanger (22) by controlling the cooling side heat exchange water pump (53) through frequency conversion, so as to bring the heat quantity in the primary side of the second heat exchanger (22) into the constant-temperature water tank (54) and maintain the water temperature of the constant-temperature water tank (54); S613, the waste heat not used by the constant-temperature water tank (54) is brought into the primary side of the third heat exchanger (56) by controlling the first heat dissipation water pump (55a) through frequency conversion; S711, the waste heat in the primary side of the third heat exchanger (56) is brought into the cooling tower (62) through the cooling water circulating through the secondary side of the third heat exchanger (56) by controlling the cooling tower water pump (61) through frequency conversion; S712, the cooling tower (62) discharges the waste heat to the surrounding environment through evaporation heat dissipation; Alternatively, steps S6 and S7 include the following steps: S621, the constant-temperature water in the constant-temperature water tank (54) is brought into the heat quantity test system (III) by the second water supplementing pump (51b), mixed with the cooling water in the heat quantity test system (III), heated and warmed up after passing through the heat pump unit condenser CO, and then flows back into the constant-temperature water tank (54); S622, the waste heat not used by the constant-temperature water tank (54) is brought into the primary side of the third heat exchanger (56) by controlling the first heat dissipation water pump (55a) through frequency conversion; S721, the waste heat in the primary side of the third heat exchanger (56) is brought into the cooling tower (62) through the cooling water circulating through the secondary side of the third heat exchanger (56) by controlling the cooling tower water pump (61) through frequency conversion; S722, the cooling tower (62) discharges the waste heat to the surrounding environment through evaporation heat dissipation; Alternatively, steps S6 and S7 include the following steps: S631, the second water supplement pump (51b) brings the constant temperature water in the constant temperature water tank (54) into the heat test system (III), mixes with the cooling water in the heat test system (III), and then is heated by the heat pump unit condenser CO, and flows back into the constant temperature water tank (54); S632, the second heat dissipation water pump (55b) is controlled by frequency conversion to directly bring the waste heat of the constant temperature water tank (54) into the waste heat discharge system (VI); S633, the first temperature regulating valve (57) mixes part of the low-temperature cooling water flowing out of the waste heat discharge system (VI) with the high-temperature cooling water flowing into the waste heat discharge system (VI), so as to reduce the water temperature directly flowing into the waste heat discharge system (VI); S731, the cooling water mixed by the first temperature regulating valve (57) directly brings the waste heat into the cooling tower (62) and discharges to the surrounding environment.

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