r717
r717-
The temperature glide of zeotropic refrigerant mixture of R744 / R717 was studied .
研究了非共沸环保混合制冷剂（R744/R717）的温度滑移。
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The design of a - 40 ℃ freezer using zeotropic refrigerant mixture of R744 / R717 was carried out .
完成了采用非共沸环保混合制冷剂（R744/R717）-40℃低温冷柜的仿真与优化设计。
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It is shown that the - 40 ℃ freezer using zeotropic refrigerant mixture of R744 / R717 has high COP of 0.71 while keeping the compressing ratio less than 8 . It is a promising refrigeration system .
结果表明：采用非共沸环保混合制冷剂（R744/R717）-40℃低温冷柜自然复叠制冷系统在保持压缩比小于8的同时能获得COP值高达0.71，是一个有发展前途的制冷系统。