蒸(zheng)發器(qi)是冷水(shui)機組四大部(bu)件的重要組成(cheng)部(bu)分。低溫(wen)液體通過(guo)(guo)蒸(zheng)發器(qi)與外部(bu)空氣(qi)交換熱(re)(re)量(liang)，蒸(zheng)發吸(xi)收熱(re)(re)量(liang)，達到(dao)冷凍效果(guo)。蒸(zheng)發器(qi)種類繁多，操作方便，廣泛應用于化工(gong)、電子、食品(pin)、塑料(liao)、印刷、制(zhi)藥(yao)等行業。蒸(zheng)發操作使生(sheng)(sheng)產設備在生(sheng)(sheng)產過(guo)(guo)程(cheng)中降低溫(wen)度，防止過(guo)(guo)熱(re)(re)、故障和對生(sheng)(sheng)產的影響。那么，如(ru)何選(xuan)擇合適(shi)的蒸(zheng)發器(qi)在生(sheng)(sheng)產冷水(shui)機組？

1.水(shui)箱浸沒(mei)式(shi)蒸發(fa)器(qi)用于(yu)非揮(hui)發(fa)性冷(leng)(leng)卻(que)劑的(de)開式(shi)循環系(xi)統(tong)。例如(ru)，在(zai)鹽(yan)水(shui)制(zhi)冰罐的(de)制(zhi)冰過(guo)程中(zhong)，如(ru)果不(bu)能采用封閉循環系(xi)統(tong)，這種蒸發(fa)器(qi)是**可(ke)以接受的(de)類型。水(shui)箱浸沒(mei)式(shi)蒸發(fa)器(qi)也可(ke)用于(yu)鹽(yan)水(shui)冷(leng)(leng)卻(que)或冷(leng)(leng)凍袋裝食品及集中(zhong)式(shi)噴(pen)淋(lin)空(kong)調制(zhi)冷(leng)(leng)機制(zhi)冷(leng)(leng)系(xi)統(tong)。鹽(yan)水(shui)對黑色(se)金屬(shu)的(de)腐蝕十分嚴重(zhong)。當它(ta)接觸到(dao)空(kong)氣，它(ta)的(de)腐蝕更強烈。

因此，如果(guo)生產(chan)工(gong)藝允(yun)許，應盡可能使用(yong)封閉循(xun)環(huan)(huan)(huan)。對于波動性(xing)較大的制(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)循(xun)環(huan)(huan)(huan)系統，應采用(yong)閉式(shi)(shi)(shi)(shi)循(xun)環(huan)(huan)(huan)。在這兩種情況下，臥(wo)式(shi)(shi)(shi)(shi)管殼式(shi)(shi)(shi)(shi)蒸發(fa)器(qi)是冷(leng)(leng)(leng)水機組的**選(xuan)擇。工(gong)業(ye)冷(leng)(leng)(leng)水機組采用(yong)水箱(xiang)浸(jin)沒(mei)式(shi)(shi)(shi)(shi)蒸發(fa)器(qi)或管殼式(shi)(shi)(shi)(shi)蒸發(fa)器(qi)時，制(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)的工(gong)作(zuo)溫(wen)度(du)比制(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)蒸發(fa)器(qi)的工(gong)作(zuo)溫(wen)度(du)高(gao)5 °C 左(zuo)右，制(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)的凝固(gu)點比制(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)的蒸發(fa)溫(wen)度(du)低(di)5 ~ 8 °C (水箱(xiang)浸(jin)沒(mei)式(shi)(shi)(shi)(shi)蒸發(fa)器(qi)為(wei)5 ~ 6 °C，管殼式(shi)(shi)(shi)(shi)蒸發(fa)器(qi)為(wei)6 ~ 8 °C)。冷(leng)(leng)(leng)卻(que)管和空氣(qi)冷(leng)(leng)(leng)卻(que)器(qi)的選(xuan)擇: 用(yong)于冷(leng)(leng)(leng)藏，空氣(qi)冷(leng)(leng)(leng)卻(que)