L20在家用空调器中替代R22的理论分析

发布时间：2018-01-25 13:19

  本文关键词： L 非共沸制冷剂 单位质量制冷量 单位容积制冷量 CO减排率　出处：《低温与超导》2017年03期 　论文类型：期刊论文

【摘要】：L20制冷剂是基于HFO制冷剂R1234ze(E)开发出的新型低GWP非共沸制冷剂,用于替代R22。其组成成分为R32、R152a和R1234ze(E),ODP值为0,GWP值为295。对其热物理性质、制冷循环理论计算以及替代R22时CO2减排率进行了分析。结果表明,除了有较大的滑移温度以外,L20和R22有相似的饱和蒸气压力-温度曲线,其导热系数高于R22;在空调标准工况下其单位质量制冷量为R22的115%,单位容积制冷量与R22的基本一致;压缩机排气温度比R22低2.2℃。在替代R22时,可减少86%的CO2排放量。
[Abstract]:L20 refrigerant is a new low GWP non-azeotropic refrigerant based on HFO refrigerant R1234zeE. it is used to replace R22.The composition of L20 refrigerant is R32. The ODP values of R152a and R1234zegna are 0 and GWP is 295. The theoretical calculation of the refrigeration cycle and the analysis of the CO2 emission reduction rate in place of R22 show that there are similar saturated vapor pressure-temperature curves between L20 and R22 except for the larger slip temperature. Its thermal conductivity is higher than that of R22; The refrigerating capacity per unit mass is 115% of R22 under the standard condition of air conditioning, and the unit volume refrigerating capacity is basically the same as that of R22. Compressor exhaust temperature is 2. 2 鈩，

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