It has been proved by computation and experimental verification that the mixture of R290,R152a, R600a having larger unit mass refrigerating capacity and unit mass output work is an ideal working medium for the reverse Brayton cycle.

• 计算及实验验证表明由R2 90、R1 5 2a、R6 0 0a组成的混合物具有较大的单位质量制冷量和单位质量输出功 ,是逆向布莱顿循环较理想的制冷工质。