CN116659915A - Heat exchanger performance test system with convenient flow, temperature and pressure adjustment - Google Patents

Heat exchanger performance test system with convenient flow, temperature and pressure adjustment Download PDF

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Publication number
CN116659915A
CN116659915A CN202310658944.7A CN202310658944A CN116659915A CN 116659915 A CN116659915 A CN 116659915A CN 202310658944 A CN202310658944 A CN 202310658944A CN 116659915 A CN116659915 A CN 116659915A
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China
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heat exchanger
temperature
condenser
tested
inlet
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CN202310658944.7A
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Inventor
朱松青
顾伟
关鸿耀
韩亚丽
许磊
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Nanjing Institute of Technology
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Nanjing Institute of Technology
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Priority to CN202310658944.7A priority Critical patent/CN116659915A/en
Publication of CN116659915A publication Critical patent/CN116659915A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/002—Thermal testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The application discloses a heat exchanger performance test system with convenient flow, temperature and pressure adjustment, which comprises a refrigerant supply system, a hot water circulation system and a cold water circulation system, wherein the refrigerant supply system and the hot water circulation system are coupled with an auxiliary condenser through a tested condenser, the refrigerant supply system is coupled with the cold water circulation system through an expansion valve and an auxiliary evaporator, and the hot water circulation system and the cold water circulation system are coupled through the tested heat exchanger.

Description

Heat exchanger performance test system with convenient flow, temperature and pressure adjustment
Technical Field
The application belongs to the technical field of refrigeration, and particularly relates to a heat exchanger performance test system with convenient flow, temperature and pressure adjustment.
Background
With the development of the air conditioning industry, the traditional one-to-one household air conditioner is replaced by a multi-connected air conditioner and a central air conditioning system with higher integration level and better energy saving benefit. The evaporator and the condenser are two important heat exchangers of the air-conditioning refrigeration system, and the performance of the two heat exchangers directly affects the performance of the whole refrigeration system. However, the air conditioner evaporator and the condenser have small heat exchange capacity and small refrigerant flow, so the performance test is difficult. The thermal performance experiment table on the market can only regulate the flow of the tested water-water heat exchanger, the condenser and the evaporator, but can not regulate the inlet pressure and the inlet temperature of the tested water-water heat exchanger, the condenser and the evaporator. The market equipment has poor openness, and the performance test experiment of the water-water heat exchanger, the condenser and the evaporator can not be carried out by the same equipment. More specifically, the drawbacks of the existing thermal performance test-bed are concentrated on the following three points:
(1) At present, the thermal performance test bed can only regulate inlet flow, but can not regulate fluorine road inlet pressure and water road crossing pressure of an evaporator and a condenser.
(2) At present, the thermal performance test bed can only regulate inlet flow, but can not regulate fluorine path inlet temperature and waterway inlet temperature of an evaporator and a condenser.
(3) The water-water heat exchanger, the condenser and the evaporator heat exchange experiment test platform in the market has poor openness, can only perform single experiment, has limited applicability, cannot be used for multiple purposes, and can be used for performing the experiments of the water-water heat exchanger, the condenser and the evaporator.
Disclosure of Invention
In order to solve the defects in the prior art, the application provides a heat exchanger performance test system with convenient flow, temperature and pressure adjustment, which can adjust the inlet flow, pressure and temperature of a water-water heat exchanger, a condenser and an evaporator to be tested so as to improve the test precision and can perform performance test experiments under various working conditions.
The technical scheme adopted by the application is as follows:
a heat exchanger performance test system with convenient flow, temperature and pressure adjustment comprises a refrigerant supply system, a hot water circulation system and a cold water circulation system;
the refrigerant supply system comprises a variable frequency compressor, an oil separator, a dry cooler, an auxiliary condenser, a subcooler, an expansion valve and an auxiliary evaporator, and the variable frequency compressor, the oil separator, the dry cooler, the auxiliary condenser, the subcooler, the expansion valve and the auxiliary evaporator are sequentially connected according to the flowing direction of the refrigerant to form a loop; the refrigerant recovery machine and the vacuum pump are respectively connected with the dry cooler and the variable frequency compressor; the detected condenser is connected with the auxiliary condenser in parallel; the detected evaporator is connected with the auxiliary evaporator in parallel;
the hot water circulation system comprises a hot water tank, a filter, a first variable-frequency water pump, an auxiliary condenser, a dry cooler, a second flowmeter and a tested heat exchanger, and the hot water circulation system is sequentially connected to form a loop; the hot water tank is also respectively connected with the water tank fan and the water tank electric heater in parallel;
the cold water circulation system comprises a cold water tank, a filter, a water tank electric heater, a fourth variable-frequency water pump, an auxiliary evaporator, an electric heater, a third flowmeter and a heat exchanger to be tested, and the cold water tank, the filter, the water tank electric heater, the fourth variable-frequency water pump, the auxiliary evaporator, the electric heater, the third flowmeter and the heat exchanger to be tested are sequentially connected to form a loop; the second variable-frequency water pump, the cooling water tower and the cold water tank are connected in series to form a loop; the cold water tank, the third variable-frequency water pump, the filter and the subcooler are sequentially connected in series to form a loop.
Further, the variable frequency compressor and the oil separator are connected in series with the oil storage barrel to form a loop.
Further, two ends of the detected condenser are connected with the auxiliary condenser in parallel through a three-way valve, the flow of the refrigerant inlet of the detected condenser is regulated through the three-way valve of the condenser inlet, and the pressure of the refrigerant inlet of the detected condenser is regulated through the variable frequency compressor.
Further, both ends of the detected evaporator are connected with the auxiliary evaporator in parallel through a three-way valve.
Further, the temperature of the cold water inlet of the heat exchanger to be measured is regulated by the electric heater, the flow of the cold water inlet of the heat exchanger to be measured is regulated by the stop valve of the cold water inlet of the heat exchanger to be measured, the temperature of the hot water inlet of the heat exchanger to be measured is regulated by the drier-cooler, and the flow of the hot water inlet of the heat exchanger to be measured is regulated by the stop valve of the hot water inlet of the heat exchanger to be measured.
Further, an electronic valve and a ball valve are arranged between the refrigerant recycling machine and the vacuum pump.
Further, a first flowmeter is arranged between the first variable-frequency water pump and the auxiliary condenser, a second flowmeter is arranged between the dry cooler and the measured heat exchanger, a third flowmeter is arranged between the measured heat exchanger and the electric heater, and a fourth flowmeter is arranged between the third variable-frequency water pump and the auxiliary evaporator.
Further, a stop valve is arranged among the first flowmeter, the first variable-frequency water pump, the dry cooler, the second flowmeter, the third flowmeter, the electric heater, the third variable-frequency water pump and the fourth flowmeter.
Further, the inlet and outlet pipelines of the heat exchanger at the side are provided with ball valves.
Further, the inlet and outlet pipelines of the auxiliary condenser, the quilt side heat exchanger and the auxiliary evaporator are respectively provided with a temperature measuring port and a pressure measuring port.
The application has the beneficial effects that:
(1) According to the heat exchanger performance test system with convenient flow, temperature and pressure adjustment, the pressure of the water inlet of the experimental element is adjusted by controlling the variable-frequency water pump; the defect that a test platform in the market can only adjust the flow of the hot water inlet of the heat exchanger and cannot control the pressure of the hot water inlet can be effectively overcome, and the system can realize multi-aspect research on the heat exchange efficiency of the heat exchanger.
(2) According to the heat exchanger performance test system with convenient flow, temperature and pressure adjustment, the temperature of the water inlet of the experimental element is adjusted by controlling the dry cooler, the electric heater, the water tank fan and the cooling water tower; the defect that the flow of the hot water inlet of the heat exchanger can be effectively adjusted by the test platform in the market, but the temperature of the hot water inlet cannot be controlled can be effectively overcome, and the system can realize multi-aspect research on the heat exchange efficiency of the heat exchanger.
(3) The heat exchanger performance test system with convenient flow, temperature and pressure adjustment provided by the application realizes the heat exchange experiment of the water-water heat exchanger, the condenser and the evaporator; the heat exchanger, the condensing heat exchanger and the boiling heat exchange experimental test platform in the market are poor in openness, single experiment can be usually only carried out, applicability is limited, and the heat exchanger and the boiling heat exchange experimental test platform cannot be used for multiple purposes.
Drawings
FIG. 1 is a schematic diagram of a heat exchanger performance test system according to the present application;
in the figure, a 1-variable frequency compressor, a 2-oil separator, a 3-oil storage barrel, a 4-dry cooler, a 5-refrigerant recovery machine, a 6-vacuum pump, a 7-detected condenser, an 8-auxiliary condenser, a 9-first variable frequency water pump, a 10-filter, an 11-dry cooler, a 12-first water tank electric heater, a 13-hot water tank, a 14-water tank fan, a 15-detected heat exchanger, a 16-electric heater, a 17-second variable frequency water pump, a 18-cooling water tower, a 19-cold water tank, a 20-third variable frequency water pump, a 21, a first filter, a 22, a second filter, a 23-subcooler, a 24-second water tank electric heater, a 25-fourth variable frequency water pump, a 26-auxiliary evaporator, a 27-expansion valve and a 28-detected evaporator, 29-check valve, 30, first electronic valve, 31, second electronic valve, 32, third electronic valve, 33, first three-way valve, 34, second three-way valve, 35, third three-way valve, 36, fourth three-way valve, 37, first stop valve, 38, second stop valve, 39, third stop valve, 40, fourth stop valve, 41, first ball valve, 42, second ball valve, 43, third ball valve, 44, fourth ball valve, 45, fifth ball valve, 46, sixth ball valve, 47, first mass flowmeter, 48, second mass flowmeter, 49, first flowmeter, 50, second flowmeter, 51, third flowmeter, 52, fourth flowmeter.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
A heat exchanger performance test system with convenient flow, temperature and pressure adjustment comprises a refrigerant supply system, a hot water circulation system and a cold water circulation system.
The refrigerant supply system comprises a variable frequency compressor 1, an oil-liquid separator 2, a dry cooler 4, a first mass flowmeter 47, an auxiliary condenser 8, a subcooler 23, an expansion valve 27, a second mass flowmeter 48 and an auxiliary evaporator 26, and are sequentially connected according to the flowing direction of the refrigerant to form a loop; the oil storage barrel 3 is respectively connected with the variable frequency compressor 1 and the oil separator 2; the refrigerant recovery machine 5 and the vacuum pump 6 are respectively connected with the dry cooler 4 and the variable frequency compressor 1; the detected condenser 7 is connected with the auxiliary condenser 8 in parallel; the evaporator under test 28 is connected in parallel with the auxiliary evaporator 26.
The hot water circulation system comprises a hot water tank 13, a filter 10, a first variable-frequency water pump 9, a first flowmeter 49, an auxiliary condenser 8, a dry cooler 11, a second flowmeter 50 and a tested heat exchanger 15, and are sequentially connected to form a loop; the water tank fan 14 is connected with the hot water tank 13 in parallel; the water tank electric heater 12 is connected in parallel with the hot water tank 13.
The cold water circulation system comprises a cold water tank 19, a filter 22, a water tank electric heater 24, a variable-frequency water pump 25, a flowmeter 52, an auxiliary evaporator 26, an electric heater 16, a third flowmeter 51 and a measured heat exchanger 15, and are sequentially connected to form a loop; the second variable-frequency water pump 17, the cooling water tower 18 and the cold water tank 19 are connected in series to form a loop; the cold water tank 19, the third variable frequency water pump 20, the filter 21 and the subcooler 23 are sequentially connected in series to form a loop.
More specifically, one electronic valve, namely a first electronic valve 30 and a third electronic valve 32, is arranged between the dry cooler 4 and the refrigerant recovery machine 5, and between the refrigerant recovery machine 5 and the inverter compressor 1.
More specifically, a second electronic valve 31 and a first ball valve 41 are provided between the refrigerant recovering machine 5 and the vacuum pump 6.
More specifically, a second ball valve 42 is provided between the vacuum pump 6 and the inverter compressor 1.
More specifically, one three-way valve, namely a first three-way valve 33, a second three-way valve 34, a third three-way valve 35 and a fourth three-way valve 36, is arranged between the first mass flow meter 47 and the auxiliary condenser 8, between the auxiliary condenser 8 and the subcooler 23, between the second mass flow meter 48 and the auxiliary evaporator 26, and between the auxiliary evaporator 26 and the inverter compressor 1.
More specifically, one stop valve, namely a first stop valve 37, a second stop valve 38, a third stop valve 39 and a fourth stop valve 40, is arranged between the first flowmeter 49 and the first variable frequency water pump 9, between the main cooler 11 and the second flowmeter 50, between the third flowmeter 51 and the electric heater 16, and between the third variable frequency water pump 25 and the fourth flowmeter 52.
More specifically, the inlet and outlet pipes of the heat exchanger 15 at the side are respectively provided with a ball valve, namely a third ball valve 43, a fourth ball valve 44, a fifth ball valve 45 and a sixth ball valve 46.
More specifically, the inlet and outlet pipes of the auxiliary condenser 8, the heat exchanger 15 on the side and the auxiliary evaporator 26 are provided with a temperature measurement port and a pressure measurement port.
The test system tested the performance of the condenser, evaporator and water-water heat exchanger as follows:
(1) when the performance of the condenser is tested, the first three-way valve 33 at the inlet of the condenser to be tested and the second three-way valve 34 at the outlet of the condenser to be tested are closed, the waterway of the condenser to be tested 7 is connected by a pipe joint, and the fluorine path is connected by a flange, so that no air leakage and water leakage are ensured; the first ball valve 41 of the vacuum pump 6 and the first electronic valve 30 of the refrigerant recovery machine 5 are opened, and after the air therein is exhausted, the first ball valve 41 of the vacuum pump 6 and the first electronic valve 30 of the refrigerant recovery machine 5 are closed.
Opening a first three-way valve 33 at the inlet of the condenser 7 to be tested and a second three-way valve 34 at the outlet; the refrigerant inlet temperature of the detected condenser 7 is regulated through the dry cooler 4, the refrigerant inlet flow of the detected condenser is regulated through the first three-way valve 33 of the condenser inlet, the refrigerant inlet pressure of the detected condenser is regulated through the variable frequency compressor 1, the water path inlet temperature of the detected condenser is regulated through the water tank electric heater 12 and the water tank fan 14, the hot water inlet flow of the detected condenser is regulated through the first stop valve 37 of the hot water inlet of the detected condenser 7, and the hot water inlet pressure of the detected condenser is regulated through the first variable frequency water pump 9. Until the working condition parameters of the detected condenser 8 meet the requirements and reach stability, recording and calculating the working condition parameters and performance parameters of the detected condenser 8 are started.
(2) When the performance of the evaporator is tested, the fourth three-way valve 36 at the inlet and the third three-way valve 35 at the outlet of the tested evaporator are closed, the waterway of the tested evaporator 28 is connected by a pipe joint, and the fluorine road is connected by a flange, so that the connection is ensured to be free from air leakage and water leakage; the second ball valve 42 of the vacuum pump and the third electronic valve 32 of the refrigerant recycling machine are opened, and after the air in the vacuum pump is emptied, the second ball valve 42 of the vacuum pump and the third electronic valve 32 of the refrigerant recycling machine are closed. The third three-way valve 35 of the detected evaporator inlet fourth three-way valve 36 and the outlet is opened, the refrigerant inlet temperature of the detected evaporator is regulated through the subcooler 23, the detected evaporator refrigerant inlet flow is regulated through the evaporator inlet fourth three-way valve 36, the detected evaporator refrigerant inlet pressure is regulated through the third variable frequency water pump 20, the detected evaporator waterway inlet temperature is regulated through the cooling water tower 18 and the water tank electric heater 24, the detected evaporator cold water inlet flow is regulated through the detected evaporator cold water inlet fourth stop valve 40, and the detected evaporator cold water inlet pressure is regulated through the fourth variable frequency water pump 25. Until the operating condition parameters of the measured evaporator 28 meet the requirements and reach stability, the operating condition parameters and performance parameters of the measured evaporator 28 are recorded and calculated.
(3) When the performance test of the heat exchanger is performed, a first three-way valve 33 of an inlet of the auxiliary condenser, a second three-way valve 34 of an outlet of the auxiliary condenser, a fourth three-way valve 36 of an inlet of the auxiliary evaporator and a third three-way valve 35 of an outlet of the auxiliary evaporator are opened; the sixth valve 46 of the cold water inlet of the heat exchanger to be tested, the fifth ball valve 45 of the cold water outlet, the third ball valve 43 of the hot water inlet and the fourth ball valve 44 of the hot water outlet are closed, the waterway interface of the heat exchanger to be tested 15 is connected by a pipe joint, the temperature of the cold water inlet of the heat exchanger to be tested is regulated by the electric heater 16, the flow rate of the cold water inlet of the heat exchanger to be tested is regulated by the third stop valve 39 of the cold water inlet of the heat exchanger to be tested, the temperature of the hot water inlet of the heat exchanger to be tested is regulated by the drier-cooler 11, and the flow rate of the hot water inlet of the heat exchanger to be tested is regulated by the second stop valve 38 of the hot water inlet of the heat exchanger to be tested. Until the working condition parameters of the heat exchanger 15 to be tested meet the requirements and reach stability, recording and calculating the working condition parameters and performance parameters of the heat exchanger 15 to be tested are started.
The above embodiments are merely for illustrating the design concept and features of the present application, and are intended to enable those skilled in the art to understand the content of the present application and implement the same, the scope of the present application is not limited to the above embodiments. Therefore, all equivalent changes or modifications according to the principles and design ideas of the present application are within the scope of the present application.

Claims (10)

1. The heat exchanger performance test system with convenient flow, temperature and pressure adjustment is characterized by comprising a refrigerant supply system, a hot water circulation system and a cold water circulation system;
the refrigerant supply system comprises a variable frequency compressor (1), an oil-liquid separator (2), a dry cooler (4), an auxiliary condenser (8), a subcooler (23), an expansion valve (27) and an auxiliary evaporator (26), and the variable frequency compressor, the oil-liquid separator and the auxiliary condenser are sequentially connected according to the flowing direction of a refrigerant to form a loop; the refrigerant recovery machine (5) and the vacuum pump (6) are respectively connected with the dry cooler (4) and the variable frequency compressor (1); the detected condenser (7) is connected with the auxiliary condenser (8) in parallel; the detected evaporator (28) is connected with the auxiliary evaporator (26) in parallel;
the hot water circulation system comprises a hot water tank (13), a filter (10), a first variable-frequency water pump (9), an auxiliary condenser (8), a dry cooler (11), a second flowmeter (50) and a tested heat exchanger (15), and are sequentially connected to form a loop; the hot water tank (13) is also respectively connected with the water tank fan (14) and the water tank electric heater (12) in parallel;
the cold water circulation system comprises a cold water tank (19), a filter (22), a water tank electric heater (24), a fourth variable-frequency water pump (25), an auxiliary evaporator (26), an electric heater (16), a third flowmeter (51) and a tested heat exchanger (15), and are sequentially connected to form a loop; the second variable-frequency water pump (17), the cooling water tower (18) and the cold water tank (19) are connected in series to form a loop; the cold water tank (19), the third variable-frequency water pump (20), the filter (21) and the subcooler (23) are sequentially connected in series to form a loop.
2. The heat exchanger performance test system with convenient flow, temperature and pressure adjustment according to claim 1, wherein the variable frequency compressor (1) and the oil separator (2) are connected in series with the oil storage barrel (3) to form a loop.
3. The heat exchanger performance test system with convenient flow, temperature and pressure adjustment according to claim 1, wherein both ends of the detected condenser (7) are connected with the auxiliary condenser (8) in parallel through three-way valves, the refrigerant inlet flow of the detected condenser (7) is adjusted through the three-way valve of the condenser inlet, and the refrigerant inlet pressure of the detected condenser is adjusted through the variable frequency compressor (1).
4. A heat exchanger performance test system with convenient flow, temperature and pressure regulation as claimed in claim 1, wherein both ends of the evaporator (28) under test are connected in parallel with the auxiliary evaporator (26) through three-way valves.
5. The heat exchanger performance test system with convenient flow, temperature and pressure adjustment according to claim 1, wherein the temperature of the cold water inlet of the heat exchanger (15) to be tested is adjusted by the electric heater (16), the flow of the cold water inlet of the heat exchanger to be tested is adjusted by the stop valve of the cold water inlet of the heat exchanger (15) to be tested, the temperature of the hot water inlet of the heat exchanger to be tested is adjusted by the dry cooler (11), and the flow of the hot water inlet of the heat exchanger to be tested is adjusted by the stop valve of the hot water inlet of the heat exchanger to be tested.
6. Heat exchanger performance test system with convenient flow, temperature and pressure regulation according to any one of claims 1-5, characterized in that an electronic valve and a ball valve are arranged between the refrigerant recovery machine (5) and the vacuum pump (6).
7. The heat exchanger performance test system with convenient flow, temperature and pressure adjustment according to claim 6, wherein a first flowmeter (49) is arranged between the first variable-frequency water pump (9) and the auxiliary condenser (8), a second flowmeter (50) is arranged between the dry cooler (11) and the heat exchanger (15) to be tested, a third flowmeter (51) is arranged between the heat exchanger (15) to be tested and the electric heater 16, and a fourth flowmeter (52) is arranged between the third variable-frequency water pump (25) and the auxiliary evaporator 26.
8. The heat exchanger performance test system with convenient flow, temperature and pressure adjustment according to claim 7, wherein a stop valve is arranged between the first flow meter (49) and the first variable frequency water pump (9), between the dry cooler (11) and the second flow meter (50), between the third flow meter (51) and the electric heater (16), and between the third variable frequency water pump (25) and the fourth flow meter (52).
9. The heat exchanger performance test system with convenient flow, temperature and pressure adjustment according to claim 6, wherein the inlet and outlet pipelines of the heat exchanger (15) at the side are provided with ball valves.
10. The heat exchanger performance test system with convenient flow, temperature and pressure adjustment according to claim 6, wherein the inlet and outlet pipes of the auxiliary condenser (8), the heat exchanger (15) on the side and the auxiliary evaporator (26) are provided with a temperature measuring port and a pressure measuring port.
CN202310658944.7A 2023-06-05 2023-06-05 Heat exchanger performance test system with convenient flow, temperature and pressure adjustment Pending CN116659915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310658944.7A CN116659915A (en) 2023-06-05 2023-06-05 Heat exchanger performance test system with convenient flow, temperature and pressure adjustment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310658944.7A CN116659915A (en) 2023-06-05 2023-06-05 Heat exchanger performance test system with convenient flow, temperature and pressure adjustment

Publications (1)

Publication Number Publication Date
CN116659915A true CN116659915A (en) 2023-08-29

Family

ID=87716818

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310658944.7A Pending CN116659915A (en) 2023-06-05 2023-06-05 Heat exchanger performance test system with convenient flow, temperature and pressure adjustment

Country Status (1)

Country Link
CN (1) CN116659915A (en)

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