套管式換熱器是一種交換熱能的設備，在制冷、石化、化工、新能源 行業中廣泛的使用。換熱(re)器結(jie)構為兩不(bu)等徑的圓管(guan)(guan)(guan)同心相套(tao)(tao),稱其為徑向(xiang)熱(re)管(guan)(guan)(guan),其熱(re)量(liang)傳(chuan)(chuan)遞(di)方向(xiang)為徑向(xiang)。當(dang)外(wai)(wai)管(guan)(guan)(guan)外(wai)(wai)側(ce)(ce)(ce)(ce)為高(gao)(gao)溫側(ce)(ce)(ce)(ce),內管(guan)(guan)(guan)內側(ce)(ce)(ce)(ce)為低溫側(ce)(ce)(ce)(ce)時,真空狀態(tai)的套(tao)(tao)管(guan)(guan)(guan)間隙內熱(re)側(ce)(ce)(ce)(ce)工(gong)質(zhi)(zhi)受熱(re)汽(qi)化膨脹(zhang),與冷側(ce)(ce)(ce)(ce)工(gong)質(zhi)(zhi)形成(cheng)高(gao)(gao)速(su)對流(liu)并在冷側(ce)(ce)(ce)(ce)凝結(jie),即當(dang)熱(re)量(liang)傳(chuan)(chuan)入(ru)熱(re)管(guan)(guan)(guan)的外(wai)(wai)管(guan)(guan)(guan)時,工(gong)作介(jie)質(zhi)(zhi)吸熱(re)蒸發,流(liu)向(xiang)冷側(ce)(ce)(ce)(ce),在那里介(jie)質(zhi)(zhi)蒸汽(qi)被冷卻,釋放出汽(qi)化潛熱(re),冷凝變(bian)成(cheng)液體,然后返(fan)回熱(re)側(ce)(ce)(ce)(ce),如此反(fan)復循環,通過工(gong)質(zhi)(zhi)的相變(bian)和傳(chuan)(chuan)質(zhi)(zhi)實現熱(re)量(liang)的高(gao)(gao)效傳(chuan)(chuan)遞(di)。