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Experiments on Expansion and Superheat Processes of a Co 2 Cycle Using Microchannel Evaporator
Experiments on expansion and superheat processes of a transcritical CO2 air conditioning system were done. In this study, the cross-sectional area of the expansion valve reduces from 8.195 to 0.091mm2, the cooler pressure increases and the evaporator pressure decreases; the pressure difference between cooler and evaporator increases. Besides, the power input of compressor increases as decreasing the crosssectional area.It is also observed that...
25 p hcmute 01/06/2018 541 2
Từ khóa: Experiment, CO 2 refrigerant, expansion, superheat, evaporator, microchannel
An Experiment on a CO Air Conditioning System with Copper Heat Exchangers 2
This paper presented an experiment on a CO air conditioning system with copper heat exchangers. In this study, the compressor and cooler were tested with hydraulic method to determine the deformed and torn temperatures. The results show that conventional compressor is not suitable for using high pressure, due to the COP of cycle is very low (0.5 only). With CO2 compressor, the cycle can achieved COP of 3.07 at the evaporative temperature of...
7 p hcmute 01/06/2018 495 2
Từ khóa: air conditioning system, heat exchanger, cooler, evaporator, CO refrigerant. 2
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