冷(leng)(leng)卻塔是用(yong)水(shui)作(zuo)為(wei)循環冷(leng)(leng)卻劑，從一系(xi)統中(zhong)吸(xi)收熱(re)(re)(re)量(liang)排放至大氣(qi)中(zhong)，以降低(di)水(shui)溫的裝(zhuang)置(zhi)；其(qi)冷(leng)(leng)是利(li)用(yong)水(shui)與空氣(qi)流動(dong)接觸后進(jin)行冷(leng)(leng)熱(re)(re)(re)交換產生(sheng)(sheng)蒸(zheng)(zheng)汽，蒸(zheng)(zheng)汽揮(hui)發(fa)帶(dai)走熱(re)(re)(re)量(liang)達到蒸(zheng)(zheng)發(fa)散(san)熱(re)(re)(re)、對(dui)流傳(chuan)熱(re)(re)(re)和輻射傳(chuan)熱(re)(re)(re)等(deng)原理來散(san)去工(gong)業(ye)上(shang)或制冷(leng)(leng)空調中(zhong)產生(sheng)(sheng)的余(yu)熱(re)(re)(re)來降低(di)水(shui)溫的蒸(zheng)(zheng)發(fa)散(san)熱(re)(re)(re)裝(zhuang)置(zhi)，以保證系(xi)統的正常(chang)運行，裝(zhuang)置(zhi)一般為(wei)桶狀，故名為(wei)冷(leng)(leng)卻塔。冷(leng)(leng)卻塔是集空氣(qi)動(dong)力(li)學、熱(re)(re)(re)力(li)學、流體學、化學、生(sheng)(sheng)物(wu)化學、材料學、靜、動(dong)態(tai)結構力(li)學，加工(gong)技術等(deng)多種學科為(wei)一體的綜合產物(wu)。