Testing method of thermal performance of partial phase change refrigeration compressor

A technology for refrigeration compressors and testing methods, which is applied in the testing of machine/structural components, pump testing, liquid variable capacity machinery, etc. Effect

Inactive Publication Date: 2010-06-02
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these test methods contain many components and are expensive

Method used

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  • Testing method of thermal performance of partial phase change refrigeration compressor
  • Testing method of thermal performance of partial phase change refrigeration compressor
  • Testing method of thermal performance of partial phase change refrigeration compressor

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Embodiment

[0019] A hermetic centrifugal refrigeration compressor 1 was tested by using the test method provided by the present invention, and the refrigerant was RC318. The evaporating temperature of compressor 1 is 5°C, the condensation temperature is 55°C, and the inlet parameters of refrigeration compressor 1 after driving are pressure P3=0.156MPa and temperature T3=10°C. Such as figure 2 As shown, after being compressed by the compressor 1, the high-pressure and high-temperature gas enters the cooling stage for cooling by the condenser 2, and the cooling water in the condenser 2 cools the high-pressure and high-temperature gas into a high-pressure liquid, and the outlet pressure of the cooled high-pressure liquid is P1=0.739MPa , the temperature is T1=50°C, the high-pressure liquid is decompressed through the expansion valve 3 of the throttling and decompression link, so that its pressure is a low-pressure two-phase fluid of P2=0.156Mpa. Injection device 4, then the low-temperatur...

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Abstract

The invention discloses a testing method of the thermal performance of a partial phase change refrigeration compressor. High-temperature high-pressure gas at the outlet of the refrigeration compressor is cooled by a cooling link to form high-pressure liquid which is further cooled into low-pressure low-temperature two-phase liquid by a throttling pressure-reduction link; gas separated from the two-phase liquid after a gas-liquid separating / charging link enters the compressor inlet; if the parameters of the gas at the compressor inlet satisfy the testing requirement values of the compressor, the performance parameters of the refrigeration compressor are calculated by the degrees of supercooling and superheat through a pressure-enthalpy chart of a refrigeration working medium; and if the parameters of the gas at the compressor inlet do not satisfy the testing requirement values of the compressor, the parameters of the cooling link and the throttling pressure-reduction link are adjusted until the inlet parameters of the refrigeration compressor satisfy the testing requirements. The testing method has simple flows, is convenient to adjust and has low cost by adopting less parts.

Description

technical field [0001] The invention belongs to the technical field of thermal performance measurement of refrigeration compressors. It specifically relates to the thermal performance test method of some phase-change refrigeration compressors. Background technique [0002] The refrigeration compressor is the core component of the vapor compression refrigeration device. In order to obtain the performance parameters of the compressor, it is necessary to conduct a thermal performance test. For the thermal performance test methods of refrigeration compressors, there are many test methods recommended by ISO917-1987, such as the second refrigerant quantity heater method, the flooded refrigerant quantity heater method, the dry refrigerant quantity heater method, and the suction pipe test method. Refrigerant gas flowmeter method, refrigerant liquid flowmeter method, water-cooled condenser calorimeter method, refrigerant gas cooling method and compressor discharge pipe calorimeter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00G01M19/00G01M99/00
Inventor 张兴娟袁修干高峰
Owner BEIHANG UNIV
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