【摘要】 通过对同一台冷冻箱的不同制冷剂循环系统的反复测试 ,从制冷循环的多个参量分析中给出了替代制冷剂R6 0 0a/R2 90的实际循环效果 ,非共沸混合制冷剂作为中小型制冷装置中的直接替代物 ,能够满足原系统的温度、压力要求 ,其充注量仅为R12的 35 %～ 4 0 %。更多还原

【Abstract】 Through repetitive experiment to different refrigerant circulatory system on one refrigerator, the actually cycle effect of the replacement refrigerant R600 a/R290 has been given from many parameters analysis of refrigerant cycle. As direct replacement in medium-size and small-size refrigerating plant, NARM can meet original system’s demand on temperature and pressure. Its charging amount is 35%～40% as much as that of R12.更多还原