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)(re)(re)器結構(gou)為(wei)兩不(bu)等徑的圓管(guan)(guan)(guan)同(tong)心相套(tao),稱其為(wei)徑向熱(re)(re)(re)管(guan)(guan)(guan),其熱(re)(re)(re)量傳(chuan)(chuan)遞方向為(wei)徑向。當(dang)外管(guan)(guan)(guan)外側為(wei)高溫側,內(nei)管(guan)(guan)(guan)內(nei)側為(wei)低溫側時,真空(kong)狀(zhuang)態的套(tao)管(guan)(guan)(guan)間隙內(nei)熱(re)(re)(re)側工(gong)質(zhi)受熱(re)(re)(re)汽(qi)化膨脹,與冷(leng)(leng)側工(gong)質(zhi)形(xing)成(cheng)高速對流(liu)并在(zai)冷(leng)(leng)側凝結,即當(dang)熱(re)(re)(re)量傳(chuan)(chuan)入(ru)熱(re)(re)(re)管(guan)(guan)(guan)的外管(guan)(guan)(guan)時,工(gong)作介質(zhi)吸熱(re)(re)(re)蒸發(fa),流(liu)向冷(leng)(leng)側,在(zai)那(nei)里介質(zhi)蒸汽(qi)被冷(leng)(leng)卻,釋放出汽(qi)化潛熱(re)(re)(re),冷(leng)(leng)凝變成(cheng)液體,然后返(fan)回熱(re)(re)(re)側,如此反(fan)復循環,通過工(gong)質(zhi)的相變和傳(chuan)(chuan)質(zhi)實現(xian)熱(re)(re)(re)量的高效(xiao)傳(chuan)(chuan)遞。