CAJ | 학술논문

建立了基于闪发蒸汽冷却技术及 R134a 为工质的高温空调器数学模型，分析并比较了 R22单级压缩、R22闪发蒸汽冷却和 R134a 单级压缩制冷系统在不同室外气温度下系统冷凝压力、压缩机排气温度、制冷量、耗功和性能系数。结果表明，相同工况下 R134a 制冷系统的冷凝压力和排气温度最低，制冷量较小，较 R22制冷系统适宜于环境温度50℃以上工况。当环境温度介于42～50℃时，闪发蒸汽冷却技术可有效降低以 R22为工质的空调压缩机的排气温度，提高系统制冷量和性能系数，但冷凝压力和耗功略有升高。
건립료기우섬발증기냉각기술급 R134a 위공질적고온공조기수학모형，분석병비교료 R22단급압축、R22섬발증기냉각화 R134a 단급압축제랭계통재불동실외기온도하계통냉응압력、압축궤배기온도、제랭량、모공화성능계수。결과표명，상동공황하 R134a 제랭계통적냉응압력화배기온도최저，제랭량교소，교 R22제랭계통괄의우배경온도50℃이상공황。당배경온도개우42～50℃시，섬발증기냉각기술가유효강저이 R22위공질적공조압축궤적배기온도，제고계통제랭량화성능계수，단냉응압력화모공략유승고。
Mathematical model of the high temperature air-conditioner based on flash evaporative cooling technology and using R134a as refrigerant were developed.Condensing pressure,compressor’s discharge temperature and input power,refrigerating ca-pacity and coefficient of performance (COP)of refrigeration systems including refrigeration system with R134a as refrigerant,sin-gle stage compression refrigeration system with R22 as refrigerant and flash evaporative cooling technology based refrigeration sys-tem also using R22 as refrigerant were analyzed.Results showed that refrigeration system using R134a as refrigerant had the lowest condensing pressure,compressor discharge temperature and refrigerating capacity when three refrigeration systems worked in same condition,and this system was more suitable for the condition that environment temperature was higher than 50℃.Compared with single stage compression refrigeration system with R22 as refrigerant,flash evaporative cooling technology could effectively reduce the compressor discharge temperature and improve the refrigeration system’s capacity and COP with slightly higher power con-sumption and condensing pressure when the environment temperature was between 42 ~50 ℃.