In this paper, cycle performance analysis of two-stage compression two-stage expansion refrigeration system using eco-friendly refrigerants is presented to offer the basic design data for the operating parameters of the system. Eco-friendly refrigerant R600a(Isobutane) for freon refrigerant R22 were used working fluids in this study. The coefficient of performance(COP) of R600a is about 5% greater than that of R22 two-stage compression refrigeration system in the range of evaporation temperature –30℃∼-60℃. The coefficient of performance of two-stage compression and two-stage expansion refrigeration system decreases with the increasing condensation temperature and superheating degree but increases with the increasing evaporation temperature, subcooling degree and mass flow rate ration of intercooler.
목차
ABSTRACT 1. 서론 2. 성능 분석 3. 본론 3.1 응축온도의 영향 3.2 증발온도의 영향 3.3 과냉각도의 영향 3.4 과열도의 영향 3.5 중각냉각기의 냉매유량 영향 4. 결론 References
키워드
성능계수친환경 냉매성능분석과냉각도과열도Coefficient of performanceEco-friendly refrigerantPerformance analysisSubcooling degreeSuperheating degree
저자
한기춘 [ Gi-Chun Han | Member, Department of Mechanical System Engineering, Graduate School, Tongmyong University in Pusan ]
구학근 [ Hak-Keun Ku | Member, Department of Refrigeration and Air-Conditioning Engineering, Tongmyong University in Pusan ]
Corresponding author