螺(luo)桿風冷式工(gong)業冷凍(dong)機是怎樣(yang)工(gong)作的呢？該(gai)怎樣(yang)選(xuan)用呢？下面就為大(da)家(jia)介紹(shao)。

　　螺(luo)(luo)桿(gan)風冷(leng)(leng)(leng)(leng)式(shi)工業冷(leng)(leng)(leng)(leng)凍(dong)機(ji)因其關鍵部件(jian)-壓(ya)(ya)(ya)(ya)(ya)縮機(ji)采(cai)用螺(luo)(luo)桿(gan)式(shi)故名(ming)螺(luo)(luo)桿(gan)風冷(leng)(leng)(leng)(leng)式(shi)工業冷(leng)(leng)(leng)(leng)凍(dong)機(ji)，機(ji)組由由蒸(zheng)發器出來的(de)(de)狀態(tai)(tai)為的(de)(de)氣體冷(leng)(leng)(leng)(leng)媒(mei);經(jing)壓(ya)(ya)(ya)(ya)(ya)縮機(ji)絕熱(re)壓(ya)(ya)(ya)(ya)(ya)縮以(yi)后，變(bian)(bian)成(cheng)高溫高壓(ya)(ya)(ya)(ya)(ya)狀態(tai)(tai)。被壓(ya)(ya)(ya)(ya)(ya)縮后的(de)(de)氣體冷(leng)(leng)(leng)(leng)媒(mei)，在冷(leng)(leng)(leng)(leng)凝器中(zhong)，等壓(ya)(ya)(ya)(ya)(ya)冷(leng)(leng)(leng)(leng)卻(que)冷(leng)(leng)(leng)(leng)凝，經(jing)冷(leng)(leng)(leng)(leng)凝后變(bian)(bian)化成(cheng)液(ye)態(tai)(tai)冷(leng)(leng)(leng)(leng)媒(mei)，再(zai)經(jing)節流閥膨脹到低壓(ya)(ya)(ya)(ya)(ya)，變(bian)(bian)成(cheng)氣液(ye)混合物(wu)。其中(zhong)低溫低壓(ya)(ya)(ya)(ya)(ya)下的(de)(de)液(ye)態(tai)(tai)冷(leng)(leng)(leng)(leng)媒(mei)，在蒸(zheng)發器中(zhong)吸收被冷(leng)(leng)(leng)(leng)物(wu)質的(de)(de)熱(re)量，重新(xin)變(bian)(bian)成(cheng)氣態(tai)(tai)冷(leng)(leng)(leng)(leng)媒(mei)。氣態(tai)(tai)冷(leng)(leng)(leng)(leng)媒(mei)經(jing)管道(dao)重新(xin)進入(ru)壓(ya)(ya)(ya)(ya)(ya)縮機(ji)，開始新(xin)的(de)(de)循環。這就是冷(leng)(leng)(leng)(leng)凍(dong)循環的(de)(de)四個過程。也是螺(luo)(luo)桿(gan)風冷(leng)(leng)(leng)(leng)式(shi)工業冷(leng)(leng)(leng)(leng)凍(dong)機(ji)的(de)(de)主要工作原理。

　　產品選用要點：

　　螺桿風冷(leng)(leng)式工業冷(leng)(leng)凍機組的主要控制參(can)數(shu)為制冷(leng)(leng)性能系數(shu)，額定制冷(leng)(leng)量(liang)，輸入(ru)功率以及制冷(leng)(leng)劑類型等。

　　選用(yong)螺桿(gan)風冷(leng)式工業(ye)(ye)冷(leng)凍機(ji)(ji)組時，優先考(kao)慮(lv)性能(neng)系(xi)數(shu)值較高的機(ji)(ji)組。同時，在設計選用(yong)時應考(kao)慮(lv)螺桿(gan)風冷(leng)式工業(ye)(ye)冷(leng)凍機(ji)(ji)組負荷的調(diao)節(jie)范(fan)圍。多機(ji)(ji)頭螺桿(gan)風冷(leng)式工業(ye)(ye)冷(leng)凍機(ji)(ji)組部分(fen)負荷性能(neng)優良，可根據實(shi)際情況選用(yong)。

　　選用螺桿(gan)風冷(leng)(leng)式工業冷(leng)(leng)凍(dong)機(ji)組時，應注意(yi)名義(yi)工況的條件。螺桿(gan)風冷(leng)(leng)式工業冷(leng)(leng)凍(dong)機(ji)組的實際產(chan)冷(leng)(leng)量與下列因(yin)素有關：

　　冷水(shui)(shui)出水(shui)(shui)溫度(du)和流量; 冷卻水(shui)(shui)的進(jin)水(shui)(shui)溫度(du)、流量以及(ji)污垢系數(shu)。

選用螺(luo)桿風冷(leng)式工(gong)業冷(leng)凍(dong)機組(zu)時，應注(zhu)意該(gai)型號(hao)機組(zu)的正常(chang)工(gong)作范(fan)圍，主(zhu)要是(shi)主(zhu)電機的電流限值是(shi)名義(yi)工(gong)況下的軸功率的電流值。