웨어러블 에어컨디셔너용 마이크로 채널 증발기 및 초소형 압축기 개발

This paper presents the development of micro channel evaporator and miniature compressor for wearable air-conditioner. Wearable air-conditioner is composed of micro channel evaporator, miniature compressor, condenser and expansion device. R134a was used as a refrigerant for the system. And cold water to cool down the heat generated from the body was produced at the evaporator. Channel depth and width of the micro channel evaporator were 330 ㎛ and 500 ㎛, respectively. And proto-type miniature rotary compressor was manufactured and adopted. Inlet temperature and mass flow-rate of water were selected as the experimental factors. And heat transfer rate, overall heat transfer coefficient and pressure drop of water side were taken as objective responses. Cooling capacity of miniature compressor was conducted by validation test.