| 제목 |
자동차용 CO2 에어컨 시스템 열교환기 성능 특성에 관한 실험적 연구 |
| 분야 |
열유체 및 공조시스템(HVAC) |
| 언어 |
Korean |
| 저자 |
김성철(자동차부품연구원), 원종필(자동차부품연구원), 이동혁(자동차부품연구원) |
| Key Words |
Evaporator(증발기), Gas cooler(가스냉각기), Internal heat exchanger(내부 열교환기), CO2(이산화탄소), Cooling capacity(냉방 용량), Heat rejection(열방출) |
| 초록 |
The performance characteristics of heat exchangers which consist of a gas cooler, an evaporator and an internal heat exchanger have been investigated at various operating conditions of CO2 air conditioning system by experiments. The heat exchangers were designed for use in the vehicle CO2 air conditioning system, when considering the characteristics of heat transfer and high pressure as CO2 refrigerant. This paper studied the performance of heat exchangers at various compressor speeds and expansion valve openings, and quantified the heat transfer rates and pressure drops. Heat transfer rates at the gas cooler and the evaporator were 6.9 kW and 5.2 kW, respectively, when the compressor speed was 4000 rpm and refrigerant vapor quality at the evaporator outlet was 0.98. Therefore, this paper carried out that the heat exchangers were analyzed to achieve superior performance for the vehicle transcritical CO2 cycle. |
| 원문(PDF) |
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