冷冻机在充分考虑上述几方面身分以后，选择冷水机，冷水机组时，还应注意以下几点：3．冷水机，冷水机组一般以选用2～4台为好，中小型规模宜选用2台，较大型可选用3台，特大型可选用4台。机组之间要考虑其互为备用和切换利用的可能性。同一机房内可采用不同类型、不同容量的机组搭配的组合式方案，以节约能耗。并联运行的机组中zui少应选择一台自动化程度较高、调节机能较好、能保证部分负荷下能运行的机组。选择涡旋式冷水机。

    选冷水机组时，宜优先选用多机头自动联控的冷水机，冷水机组。4．对大型集中空调系统的冷源，宜选用结构紧凑、占地面积小及紧缩机、电动机、冷凝器、蒸发器和自控元件等都组装在同一框架上的冷水机，冷水机组。对小型全空气调节系统，宜采用直接蒸发式紧缩冷凝机组。5．对有合适热源出格是有余热或废热等场所或电力贫乏的场所，宜采用接收式冷水机。

    选冷水机组时应考虑其对环境的污染：一是噪声与振动，要满足四周环境的要求；二是制冷剂CFCs对大气臭氧层的风险程度和产生温室效应的大小，出格要注意CFCs的禁用时候表。在防止CFCs污染方向接收式冷水机，冷水机组有着较着的优势。7．电力驱动的制冷机的制冷系数COP比接收式制冷机的热力系数高，前者为后者的二倍以上。详细资料致电毛：   http://www.zjmowenji。。ｃｏｍ 

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能耗由低到高的挨次为：离心式冷水机，冷水机组、螺杆式冷水机，冷水机组、涡旋式冷水机，冷水机组、接收式冷水机