高溫(wen)工業制冷(leng)機(ji)(ji)(5 ~ 30 °C)這(zhe)種制冷(leng)機(ji)(ji)使用傳統(tong)的制冷(leng)劑(ji)，將溫(wen)度控(kong)制在(zai)5 ~ 30 °C 之間。結果表(biao)明，在(zai)調整(zheng)溫(wen)度控(kong)制范圍時(shi)，工業冷(leng)水機(ji)(ji)組的**溫(wen)度設定(ding)在(zai)5 °C，**溫(wen)度設定(ding)在(zai)30 °C，這(zhe)是工業上應用最(zui)廣泛的溫(wen)度控(kong)制范圍。但在(zai)制定(ding)工業冷(leng)水機(ji)(ji)組方案時(shi)，有些要(yao)(yao)求(qiu)控(kong)制在(zai)3 °C，需要(yao)(yao)提(ti)高和確(que)定(ding)。

中溫(wen)工(gong)業冷(leng)水(shui)機(ji)(ji)組(0 ~ 15 °C)的水(shui)在(zai)0 °C 時(shi)會結(jie)冰，這是(shi)大多數人都能理(li)解的常識性問題(ti)。那么，如(ru)果工(gong)業冷(leng)水(shui)機(ji)(ji)組需(xu)要零度以(yi)(yi)下的低溫(wen)冷(leng)凍液(ye)，是(shi)否可以(yi)(yi)實(shi)現呢？當(dang)然，答案(an)是(shi)肯(ken)定的。中溫(wen)工(gong)業冷(leng)水(shui)機(ji)(ji)的溫(wen)度可設定在(zai)攝氏0度至15度，并可使用(yong)氯化(hua)鈣(鹽水(shui))或乙二醇水(shui)溶液(ye)作為(wei)制冷(leng)劑。

低(di)(di)溫(wen)工(gong)(gong)(gong)業(ye)(ye)冷(leng)(leng)(leng)水(shui)機組(zu)(zu)可(ke)提供 -15 ° C ~ -35 ° C 以下的低(di)(di)溫(wen)工(gong)(gong)(gong)業(ye)(ye)冷(leng)(leng)(leng)水(shui)機組(zu)(zu)。它(ta)通(tong)常(chang)用于化工(gong)(gong)(gong)和制(zhi)藥行(xing)業(ye)(ye)，用于反應(ying)器中的物(wu)料冷(leng)(leng)(leng)卻或(huo)物(wu)料冷(leng)(leng)(leng)凝(ning)回收。深低(di)(di)溫(wen)工(gong)(gong)(gong)業(ye)(ye)制(zhi)冷(leng)(leng)(leng)機能夠(gou)提供 -35 °C 以下的低(di)(di)溫(wen)冷(leng)(leng)(leng)凍液的工(gong)(gong)(gong)業(ye)(ye)制(zhi)冷(leng)(leng)(leng)機稱(cheng)為深低(di)(di)溫(wen)工(gong)(gong)(gong)業(ye)(ye)制(zhi)冷(leng)(leng)(leng)機。采用二元(yuan)或(huo)三元(yuan)復合(he)制(zhi)冷(leng)(leng)(leng)系統(tong)，又稱(cheng)復合(he)式工(gong)(gong)(gong)業(ye)(ye)制(zhi)冷(leng)(leng)(leng)機。因此，工(gong)(gong)(gong)業(ye)(ye)冷(leng)(leng)(leng)水(shui)機組(zu)(zu)的溫(wen)度控制(zhi)范圍確實特別(bie)寬(kuan)。