【摘要】 本文介绍了两级压缩与复叠式制冷方式的特点 ,并在 - 6 0℃～ - 80℃的制冷范围内对这两种方式进行了详细的计算与比较 ,得出了在较低的蒸发温度下复叠式比两级压缩式具有更好的经济性的结论 ,同时从节能和增效的角度对这两种制冷方式的发展及应用提出了几点建议。更多还原

【Abstract】 This paper discusses the specialty of double-stage compression and cascade refrigerating system.It gives the calculate and compare of double-stage compression and cascade refrigerating system in the evaporate temperature of -60 ℃～-80 ℃.It draws a conclusion of that cascade refrigerating system is more economic than double-stage compression when used in low evaporate temperature.And this paper gives some advice on the use and develop of them on the base of energy saving and efficiency increasing.更多还原