|제목(국문)||냉매 R1234yf 적용 자동차용 에어컨 Drop-in 성능 특성|
|제목(영문)||Performance Characteristics of a Drop-in System for a Mobile Air Conditioner Using Refrigerant R1234yf|
이호성 (H. S. Lee ,한국자동차부품연구원 ) ▷공저자네트워크등록하기
박차식 (Cha-Sik Park ,Department of Automotive Engineering, Hoseo University ) ▷공저자네트워크등록하기
In this study, the performance of mobile air conditioner(MAC) systems to which the refrigerants R134a and R1234yf were used was evaluated to compare the characteristic of automotive refrigeration cycles with refrigerant. The experimental setup of a MAC consists of an belt driven compressor, a condenser, an evaporator and a block type thermal expansion valve, The drop-in test on MAC were camed out under variable compressor speed from 800 to 2500 rpm. Performance test by using R1234yf and R134a in the same system revealed low the charge amountand mass flow rates for using R1234yf, that is, up to 10% and 17%, respectively. The compressor discharge temperature 01 R1234yf is 8 °C lower than that 01 R134a. The cooling capacity with R1234yf system decreased by 4~7% compared with R134a system. In addition, The COP of R1234yf system is lower 3~4% than that of R134a system.
|keyword||Alternative refrigerant(대체냉매), R1234yf(R1234yf), GWP(지구온난화지수), Mass flow rate(질량유량), COP(성능계수)|
|저널명||설비공학 논문집 ▷관련저널보기|