Abstract
Abstract - An experimental study was performed estimating COP(Coefficient of Performance) of air-conditioning cycle using inverter scroll compressor with and without Al 2 O 3 nano particle. All experiments were done for various compressor speeds from 1000∼4000 rpm and used the inverter controller called CANDY to change the compressor rpm. The air-conditioning cycle components in the apparatus were used as same with components of YF hybrid car. To estimate the COP, this study measured the temperature and pressure at inlets and outlets of compressor, condenser, and evaporator. And also measured the compressor input power using Powermeter. Through the experiments, the maximum error to estimate COP was shown about ±6.09% at 3500rpm. The COP of refrigeration cycle with Al 2 O 3 nano-particle was similar with that of the base cycle without nano-particle between 1000∼3000 rpm of the compressor speed. But, This study showed that the COP of the cycle with Al 2 O 3 over 3000 rpm of the compressor speed was higher than that of the base cycle due to the higher heat transfer rate increased in the evaporator from the higher oil flow rate inside the cycle as well known. Those results can be used the basic and fundamental data to design the air-conditioning cycle using inverter scroll compressor with Al
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