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風冷式冷水機蒸發器的主要指標有哪幾個?

2024-03-09

無論是(shi)(shi)(shi)風冷(leng)(leng)(leng)(leng)式(shi)(shi)箱式(shi)(shi)冷(leng)(leng)(leng)(leng)水(shui)機(ji)(ji),風冷(leng)(leng)(leng)(leng)式(shi)(shi)螺桿式(shi)(shi)冷(leng)(leng)(leng)(leng)水(shui)機(ji)(ji),還是(shi)(shi)(shi)風冷(leng)(leng)(leng)(leng)式(shi)(shi)低溫(wen)冷(leng)(leng)(leng)(leng)水(shui)機(ji)(ji),都需要(yao)蒸發(fa)(fa)(fa)器(qi)。 蒸發(fa)(fa)(fa)器(qi)是(shi)(shi)(shi)風冷(leng)(leng)(leng)(leng)式(shi)(shi)冷(leng)(leng)(leng)(leng)水(shui)機(ji)(ji)組制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)系(xi)統(tong)的(de)四大部(bu)件之一,是(shi)(shi)(shi)提(ti)供其中液(ye)(ye)態制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)沸騰(teng)和蒸發(fa)(fa)(fa)的(de)部(bu)件或(huo)設備。由于蒸發(fa)(fa)(fa)是(shi)(shi)(shi)一個吸熱過程(cheng),蒸發(fa)(fa)(fa)器(qi)是(shi)(shi)(shi)風冷(leng)(leng)(leng)(leng)式(shi)(shi)冷(leng)(leng)(leng)(leng)水(shui)機(ji)(ji)組制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)系(xi)統(tong)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)能力和功(gong)能的(de)最終體(ti)(ti)現,包括家用空調的(de)室(shi)內機(ji)(ji),其主(zhu)要(yao)部(bu)件就(jiu)是(shi)(shi)(shi)蒸發(fa)(fa)(fa)器(qi)。事實上(shang),根(gen)據被冷(leng)(leng)(leng)(leng)卻(que)的(de)物體(ti)(ti)是(shi)(shi)(shi)空氣還是(shi)(shi)(shi)液(ye)(ye)體(ti)(ti),蒸發(fa)(fa)(fa)器(qi)通常被稱為空氣冷(leng)(leng)(leng)(leng)卻(que)器(qi)或(huo)液(ye)(ye)體(ti)(ti)冷(leng)(leng)(leng)(leng)卻(que)器(qi)。


衡量風冷(leng)式冷(leng)水機組蒸發器的(de)主要(yao)指標是傳(chuan)(chuan)熱系(xi)數(shu)(shu)和傳(chuan)(chuan)熱面。為提高蒸發器的(de)效率,首先應提高其(qi)傳(chuan)(chuan)熱系(xi)數(shu)(shu)。那么提高傳(chuan)(chuan)熱系(xi)數(shu)(shu)的(de)關(guan)鍵是提高制冷(leng)劑與傳(chuan)(chuan)熱管壁之間的(de)對流傳(chuan)(chuan)熱。


由于制冷劑沸騰時的(de)(de)表面(mian)傳(chuan)熱系(xi)(xi)數遠大于蒸(zheng)(zheng)汽(qi)與管壁的(de)(de)傳(chuan)熱系(xi)(xi)數,因此蒸(zheng)(zheng)發(fa)器內液體與管壁的(de)(de)接觸面(mian)要大,沸騰時產(chan)生的(de)(de)蒸(zheng)(zheng)汽(qi)應迅速出(chu)院。事實上,提(ti)高傳(chuan)熱系(xi)(xi)數是比較困難的(de)(de)。


當(dang)傳(chuan)熱(re)系數(shu)一定時,換熱(re)面(mian)的大(da)小決定了(le)蒸(zheng)(zheng)發(fa)器的蒸(zheng)(zheng)發(fa)能力(li)。增加傳(chuan)熱(re)管的數(shu)量和使用翅片(pian)管(翅片(pian)管)可以有(you)效(xiao)地增加傳(chuan)熱(re)面(mian),是提高蒸(zheng)(zheng)發(fa)能力(li)的常(chang)用措施。