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CO2 compressor-expander performance testing system

A carbon dioxide and testing system technology, applied in the system field of the refrigeration technology field, can solve the problems such as the inability to control the two-stage intake air temperature of the compressor, the inability to realize the performance test of the carbon dioxide expander, and the complicated control.

Inactive Publication Date: 2006-10-11
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

Its disadvantages are: since the performance testing mechanism is based on the principle of hot gas bypass, the control of the suction and exhaust pressure is realized through the regulating valve, and the control is complicated
During the test of the two-stage CO2 compressor, without intercooling, it is impossible to control the inlet temperature of the two stages of the compressor
The high-pressure refrigerant discharged from the compressor is first throttled and decompressed to an intermediate pressure value, and the performance test of the carbon dioxide expander cannot be performed on the same test bench

Method used

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Embodiment Construction

[0009] As shown in Figure 1, the present invention includes: evaporator 1, intercooler 2, oil separator 3, air cooler 4, filter 5, electric heater 6, gas-liquid separator 7, cooling fan 8, expansion valve 9. Expansion valve 10 , electronic expansion valve 11 and mass flow meter 12 . The outlet of the electric heater 6 is connected to the inlet of the compressor 13 under test, the cooling fan 8 is fixedly installed on the front of the intercooler 2 through the outside, the inlet of the intercooler 2 is connected to the first-stage exhaust of the compressor 12 under test, and the outlet of the intercooler 2 It is connected with the two-stage inlet of the tested compressor 13, the refrigerant inlet of the oil separator 3 is connected with the two-stage exhaust port of the tested compressor 13, and the oil return port of the oil separator 3 is respectively connected with the first or second stage suction port of the tested compressor 13. The air port is connected, the inlet of the...

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Abstract

The invention discloses a test system for testing the property of carbon dioxide compressor-expander, belonging to the refrigerating technique. Wherein, the outlet of evaporator is connected to the inlet of gas-liquid separator; the outer part of cooling fan is fixed on the front surface of middle cooler; the middle cooler and oil separator are connected to the tested compressor; the inlet of gas cooler is connected to the outlet of coolant of oil separator; the outlet of gas cooler is connected to the inlet of quality flow meter and the inlet of electric expand valve; the outlet of quality flow meter is connected to the inlet of expand valve; the outlet of expand valve is connected to the inlet of tested expander; the outlet of evaporator is connected to the inlet of gas-liquid separator; the outlet of gas-liquid separator is connected to the inlet of electric heater; the outlet of electric heater is connected to the first-stage gas inlet of tested compressor. The invention has simple structure, lower cost, and flexible operation, which can be used to test the property of full-closed carbon dioxide compressor-expander.

Description

technical field [0001] The invention relates to a system in the technical field of refrigeration, in particular to a carbon dioxide compressor-expander performance testing system. Background technique [0002] At present, the research on carbon dioxide as an alternative refrigerant is one of the most active research directions in the field of refrigeration technology. Especially in the application fields of automotive air conditioner (MAC), environmental control unit (ECU) and heat pump water heater (HPWP), the application of carbon dioxide has attracted the attention of the industry and has increasingly shown its unique advantages. Among them, as the "heart" part of the refrigeration system, the development and development of the carbon dioxide compressor is very important, and its performance directly affects the overall performance and stability of the carbon dioxide system. On the other hand, considering the large throttling loss of the carbon dioxide system, the recove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
Inventor 杨军张利茅立华陈江平陆平
Owner SHANGHAI JIAO TONG UNIV
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