大金中央空調制冷原理介紹。

液體汽化制冷是利用液體汽化時的吸熱、冷凝時的放熱效應來實現制冷的。液體汽化形成蒸汽。當液體（制冷工質）處在密閉的容器中時，此容器中除了液體及液體本身所產生的蒸汽外，不存在其他任何(he)氣(qi)體(ti)(ti)(ti)，液(ye)體(ti)(ti)(ti)和(he)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)將在某(mou)一(yi)壓力(li)下達到(dao)平(ping)衡(heng)，此(ci)時(shi)的(de)汽(qi)(qi)(qi)(qi)體(ti)(ti)(ti)稱為飽(bao)和(he)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)，壓力(li)稱為飽(bao)和(he)壓力(li)，溫(wen)(wen)度(du)稱為飽(bao)和(he)溫(wen)(wen)度(du)。平(ping)衡(heng)時(shi)液(ye)體(ti)(ti)(ti)不再(zai)汽(qi)(qi)(qi)(qi)化(hua)，這(zhe)時(shi)如果將一(yi)部(bu)分蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)從容(rong)(rong)器(qi)(qi)中(zhong)(zhong)抽走，液(ye)體(ti)(ti)(ti)必(bi)然要(yao)繼續汽(qi)(qi)(qi)(qi)化(hua)產生(sheng)一(yi)部(bu)分蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)來維持這(zhe)一(yi)平(ping)衡(heng)。 液(ye)體(ti)(ti)(ti)汽(qi)(qi)(qi)(qi)化(hua)時(shi)要(yao)吸收熱(re)量(liang)(liang)，此(ci)熱(re)量(liang)(liang)稱為汽(qi)(qi)(qi)(qi)化(hua)潛熱(re)。汽(qi)(qi)(qi)(qi)化(hua)潛熱(re)來自被冷卻(que)對象(xiang)，使(shi)(shi)被冷卻(que)對象(xiang)變冷。為了(le)使(shi)(shi)這(zhe)一(yi)過程連續進行(xing)，就必(bi)須(xu)從容(rong)(rong)器(qi)(qi)中(zhong)(zhong)不斷(duan)地抽走蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)，并使(shi)(shi)其(qi)凝(ning)(ning)(ning)結成液(ye)體(ti)(ti)(ti)后再(zai)回到(dao)容(rong)(rong)器(qi)(qi)中(zhong)(zhong)去(qu)。從容(rong)(rong)器(qi)(qi)中(zhong)(zhong)抽出的(de)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)如直接冷凝(ning)(ning)(ning)成蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)，則(ze)所需(xu)冷卻(que)介(jie)質的(de)溫(wen)(wen)度(du)比(bi)液(ye)體(ti)(ti)(ti)的(de)蒸(zheng)(zheng)(zheng)(zheng)(zheng)發溫(wen)(wen)度(du)還要(yao)低，我們(men)希望(wang)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)的(de)冷凝(ning)(ning)(ning)是在常溫(wen)(wen)下進行(xing)，因(yin)此(ci)需(xu)要(yao)將蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)的(de)壓力(li)提高(gao)到(dao)常溫(wen)(wen)下的(de)飽(bao)和(he)壓力(li)。

制(zhi)冷(leng)(leng)工質(zhi)將(jiang)在(zai)低(di)溫、低(di)壓下(xia)蒸(zheng)發(fa)，產生冷(leng)(leng)效應；并(bing)在(zai)常(chang)溫、高(gao)壓下(xia)冷(leng)(leng)凝(ning)，向周圍環境或(huo)冷(leng)(leng)卻介質(zhi)放出熱量。蒸(zheng)汽在(zai)常(chang)溫、高(gao)壓下(xia)冷(leng)(leng)凝(ning)后(hou)變為高(gao)壓液體，還(huan)需要將(jiang)其壓力降低(di)到蒸(zheng)發(fa)壓力后(hou)才能進入(ru)容器。