本研究旨利用R-152a冷媒替代R-134a作為汽車用冷氣機之替代品，藉以提昇其性能。性能測試於室內條件(乾球溫度為27±1°C，濕球溫度19±0.5°C)，不同冷凝條件溫度（35±1°C、36±1°C、37±1°C、38±1°C、39±1°C及40±1°C）及不同壓縮機轉速(1000rpm、1400rpm、1800rpm、2200rom、2600rpm、3000rpm)進行性能測試。結果顯示，R-152a冷媒替代R-134a作為汽車用冷氣機，在冷凝器入口端高壓壓力降低9.72%-16.12%，壓縮機排氣溫度方面升高了2.214%-11.954%，性能係數(COP)提升了2.829%-37.495%， 能源效率比(EER)值提升了1.299%-34.678%，可用能效率值(ɛ)提升了7.258%-25.806%，可用能係數(EPC)提升了4.717%-22.727%。

This study aims to replace R-134a with R-152a as an alternative refrigerant to the mobile air conditioning system, and improve it’s performance. The performance testing was fixed the same indoor conditions (dry bulb temperature is 27±1°C wet bulb temperature is 19±0.5°C), six different condenser temperature (35±1°C 36±1°C, 37±1°C, 38±1°C, 39±1°C, 40±1°C) and six different compressor speeds. According to the result, it showed that using R-152a as a refrigerant has better effect in R-134a. In the performance testing, the condenser pressure reduced 9.72%-16.12%, the discharge temperature increased 2.214%-11.954%, COP improved 2.829%-37.495%, EER improved 1.299%-34.678%, exergy efficiency (ɛ) improved 7.258%-25.806%，exergetic performance coefficient (EPC) improved 4.717%-22.727% in the R-152a mobile air conditioning system.

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