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(jie)構為兩不等(deng)徑(jing)的(de)圓管(guan)(guan)同心相套,稱其為徑(jing)向(xiang)熱(re)(re)(re)管(guan)(guan),其熱(re)(re)(re)量(liang)傳(chuan)遞(di)(di)方向(xiang)為徑(jing)向(xiang)。當(dang)外管(guan)(guan)外側(ce)為高(gao)溫(wen)側(ce),內(nei)(nei)管(guan)(guan)內(nei)(nei)側(ce)為低溫(wen)側(ce)時,真空狀(zhuang)態(tai)的(de)套管(guan)(guan)間隙內(nei)(nei)熱(re)(re)(re)側(ce)工(gong)(gong)質(zhi)(zhi)受熱(re)(re)(re)汽(qi)化膨脹,與冷(leng)(leng)側(ce)工(gong)(gong)質(zhi)(zhi)形成(cheng)(cheng)高(gao)速對流并(bing)在冷(leng)(leng)側(ce)凝結(jie),即(ji)當(dang)熱(re)(re)(re)量(liang)傳(chuan)入熱(re)(re)(re)管(guan)(guan)的(de)外管(guan)(guan)時,工(gong)(gong)作(zuo)介質(zhi)(zhi)吸(xi)熱(re)(re)(re)蒸發,流向(xiang)冷(leng)(leng)側(ce),在那里介質(zhi)(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(bian)(bian)成(cheng)(cheng)液體(ti),然后返(fan)回(hui)熱(re)(re)(re)側(ce),如此反復循環,通過工(gong)(gong)質(zhi)(zhi)的(de)相變(bian)(bian)和傳(chuan)質(zhi)(zhi)實現熱(re)(re)(re)量(liang)的(de)高(gao)效傳(chuan)遞(di)(di)。