Thailand has been used the R-32 refrigerant in air conditioner since 2016,while it has high global warming potentials(GWP = 675).A propane refrigerant(R-290)is introduced as a newly alternative refrigerant,due to the global issue on refrigerant substitution for friendly environment.It has GWP of 4,which is 169 times lower than R-32.In this study,the theoretical energy efficiency was analysed under the Thailand's conditions at the saturated evaporation temperature of 10°C and the saturated condensation temperature of 47°C.However,the propane is highly flammable;therefore,the safety must be considered.The results showed that the coefficient of performance of propane was 5.54,which was 7% higher than R-32.The wall type air conditioner with propane refrigerant would be safe from fire if it was installed at a height higher than 1.8 m above the floor level and the floor area was larger than 17 and 23 m~2 for air conditioner cooling capacity of 3375 W and 5000 W,respectively.
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机译：自2016年以来，泰国已在空调中使用R-32制冷剂，而它具有高全球变暖潜力（GWP = 675）.A丙烷制冷剂（R-290）被引入新替代的制冷剂，因为全球问题用于友好环境的制冷剂替代。它的GWP为4，比R-32低169倍。在本研究中，在泰国的饱和蒸发温度为10°C和饱和冷凝温度下分析了理论能效。 of 47℃，丙烷非常易燃;因此，必须考虑安全性。结果表明，丙烷的性能系数为5.54，比R-32高7％。墙壁式空调丙烷制冷剂如果在楼层高于1.8米的高度高于1.8米的高度上，丙烷制冷剂将分别为1775W和5000W的空调冷却能力分别大于17和23 m〜2。
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