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   冷凍機在充分考慮上述幾方面身分以后，選擇冷水機，冷水機組時，還應(yīng)注意以下幾點：3．冷水機，冷水機組一般以選用2～4臺為好，中小型規(guī)模宜選用2臺，較大型可選用3臺，特大型可選用4臺。機組之間要考慮其互為備用和切換利用的可能性。同一機房內(nèi)可采用不同類型、不同容量的機組搭配的組合式方案，以節(jié)約能耗。并聯(lián)運行的機組中zui少應(yīng)選擇一臺自動化程度較高、調(diào)節(jié)機能較好、能保證部分負荷下能運行的機組。選擇渦旋式冷水機。

    選冷水機組時，宜優(yōu)先選用多機頭自動聯(lián)控的冷水機，冷水機組。4．對大型集中空調(diào)系統(tǒng)的冷源，宜選用結(jié)構(gòu)緊湊、占地面積小及緊縮機、電動機、冷凝器、蒸發(fā)器和自控元件等都組裝在同一框架上的冷水機，冷水機組。對小型全空氣調(diào)節(jié)系統(tǒng)，宜采用直接蒸發(fā)式緊縮冷凝機組。5．對有合適熱源出格是有余熱或廢熱等場所或電力貧乏的場所，宜采用接收式冷水機。

    選冷水機組時應(yīng)考慮其對環(huán)境的污染：一是噪聲與振動，要滿足四周環(huán)境的要求；二是制冷劑CFCs對大氣臭氧層的風(fēng)險程度和產(chǎn)生溫室效應(yīng)的大小，出格要注意CFCs的禁用時候表。在防止CFCs污染方向接收式冷水機，冷水機組有著較著的優(yōu)勢。7．電力驅(qū)動的制冷機的制冷系數(shù)COP比接收式制冷機的熱力系數(shù)高，前者為后者的二倍以上。詳細資料致電毛：   http://www.zjmowenji。。ｃｏｍ 

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能耗由低到高的挨次為：離心式冷水機，冷水機組、螺桿式冷水機，冷水機組、渦旋式冷水機，冷水機組、接收式冷水機