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离心式制冷压缩机最早是在本世纪20年代为空调目的而制造的,目前已广泛应用于各种低温和空调装置中,而且逐渐从大容量向中小容量发展。已生产过的离心式制冷压缩机的吸入蒸气容积流量从108至54000m~3/h,转速从1800至90000rpm。但由于容积流最太小时,转速必须设计得很高才能得到合理的流动效率,而容积流量太大时又受到尺寸限制,所以实用中常以压缩机最后一级叶轮出口处的蒸气容积流量800—1000m~3/h 作为下限而以吸入容积流量54900m~3/h 作为上限。图1.是一些常用制冷剂的离心式制冷压缩机在各种蒸发温度下的最
Centrifugal refrigeration compressors were first manufactured for air-conditioning purposes in the 1920s and are now widely used in a variety of low-temperature and air-conditioning units and have evolved from large to medium capacity. Has produced centrifugal refrigeration compressor suction steam volume flow from 108 to 54000m ~ 3 / h, speed from 1800 to 90000rpm. However, due to the volume flow is too small, the speed must be designed to get a high flow rate in order to get a reasonable flow efficiency, and volumetric volume is too large and subject to size constraints, so practical often compressor outlet flow at the last stage of the steam volume flow 800- 1000m ~ 3 / h as the lower limit and the suction volume flow 54900m ~ 3 / h as the upper limit. Figure 1. is the most common of refrigerants in centrifugal refrigeration compressors at various evaporation temperatures