高溫(wen)(wen)(wen)工(gong)(gong)業(ye)(ye)制(zhi)冷機(ji)(ji)(5 ~ 30 °C)這種制(zhi)冷機(ji)(ji)使(shi)用傳統的(de)(de)制(zhi)冷劑(ji)，將溫(wen)(wen)(wen)度(du)控制(zhi)在(zai)5 ~ 30 °C 之間。結果表明，在(zai)調(diao)整溫(wen)(wen)(wen)度(du)控制(zhi)范(fan)圍時(shi)，工(gong)(gong)業(ye)(ye)冷水機(ji)(ji)組的(de)(de)**溫(wen)(wen)(wen)度(du)設(she)定在(zai)5 °C，**溫(wen)(wen)(wen)度(du)設(she)定在(zai)30 °C，這是工(gong)(gong)業(ye)(ye)上應用最廣泛的(de)(de)溫(wen)(wen)(wen)度(du)控制(zhi)范(fan)圍。但(dan)在(zai)制(zhi)定工(gong)(gong)業(ye)(ye)冷水機(ji)(ji)組方案時(shi)，有些要求控制(zhi)在(zai)3 °C，需要提高和確(que)定。

中(zhong)溫(wen)工(gong)業(ye)(ye)冷(leng)水(shui)(shui)(shui)機(ji)組(0 ~ 15 °C)的(de)水(shui)(shui)(shui)在(zai)0 °C 時會結冰，這是(shi)大(da)多數人都能理解的(de)常識性問題。那么，如果工(gong)業(ye)(ye)冷(leng)水(shui)(shui)(shui)機(ji)組需(xu)要零度(du)以下的(de)低(di)溫(wen)冷(leng)凍液，是(shi)否可(ke)以實現呢？當然(ran)，答案是(shi)肯定(ding)的(de)。中(zhong)溫(wen)工(gong)業(ye)(ye)冷(leng)水(shui)(shui)(shui)機(ji)的(de)溫(wen)度(du)可(ke)設定(ding)在(zai)攝氏0度(du)至15度(du)，并可(ke)使用氯化(hua)鈣(鹽水(shui)(shui)(shui))或(huo)乙二醇水(shui)(shui)(shui)溶(rong)液作(zuo)為制(zhi)冷(leng)劑。

低溫(wen)工(gong)(gong)(gong)業(ye)冷(leng)(leng)水(shui)機(ji)(ji)組可提供 -15 ° C ~ -35 ° C 以下(xia)(xia)的低溫(wen)工(gong)(gong)(gong)業(ye)冷(leng)(leng)水(shui)機(ji)(ji)組。它通常用(yong)(yong)于(yu)(yu)化工(gong)(gong)(gong)和制藥行(xing)業(ye)，用(yong)(yong)于(yu)(yu)反應器中的物料冷(leng)(leng)卻(que)或(huo)(huo)物料冷(leng)(leng)凝回(hui)收(shou)。深(shen)低溫(wen)工(gong)(gong)(gong)業(ye)制冷(leng)(leng)機(ji)(ji)能(neng)夠提供 -35 °C 以下(xia)(xia)的低溫(wen)冷(leng)(leng)凍液的工(gong)(gong)(gong)業(ye)制冷(leng)(leng)機(ji)(ji)稱(cheng)為深(shen)低溫(wen)工(gong)(gong)(gong)業(ye)制冷(leng)(leng)機(ji)(ji)。采(cai)用(yong)(yong)二元(yuan)或(huo)(huo)三(san)元(yuan)復(fu)合(he)制冷(leng)(leng)系統，又稱(cheng)復(fu)合(he)式工(gong)(gong)(gong)業(ye)制冷(leng)(leng)機(ji)(ji)。因此，工(gong)(gong)(gong)業(ye)冷(leng)(leng)水(shui)機(ji)(ji)組的溫(wen)度控制范圍確實特別寬。