| 復疊式低溫冷凍機制冷系統說明 |
| 來源：諾冰制冷 發布時間：2017-2-10 |
復疊低溫冷(leng)凍(dong)機是采用兩種以上(shang)制冷劑，在兩個(ge)以上(shang)的(de)系(xi)(xi)統(tong)(tong)(tong)內(nei)用換(huan)熱器（冷(leng)凝蒸發器）將(jiang)其(qi)組合在一(yi)起的(de)低(di)溫(wen)(wen)制(zhi)冷(leng)系(xi)(xi)統(tong)(tong)(tong)。對于二元復(fu)疊制(zhi)冷(leng)系(xi)(xi)統(tong)(tong)(tong)冷(leng)水機，由兩個(ge)單獨的(de)制(zhi)冷(leng)系(xi)(xi)統(tong)(tong)(tong)組成，一(yi)個(ge)是高溫(wen)(wen)系(xi)(xi)統(tong)(tong)(tong)，一(yi)個(ge)是低(di)溫(wen)(wen)系(xi)(xi)統(tong)(tong)(tong)。低(di)溫(wen)(wen)系(xi)(xi)統(tong)(tong)(tong)是用來(lai)冷(leng)卻環境(jing)實驗室(shi)，而高溫(wen)(wen)系(xi)(xi)統(tong)(tong)(tong)是用來(lai)冷(leng)卻低(di)溫(wen)(wen)系(xi)(xi)統(tong)(tong)(tong)排出(chu)氣體(ti)使之(zhi)在較低(di)溫(wen)(wen)度下凝結。這樣(yang)同樣(yang)達(da)到減(jian)小壓(ya)縮比提高輸(shu)氣系(xi)(xi)數的(de)目的(de)。
這種復疊低(di)溫冷凍(dong)機制(zhi)冷系統(tong)工業冷水(shui)機的(de)(de)優(you)點是采用適合于高溫系統(tong)的(de)(de)中(zhong)壓(ya)制(zhi)冷劑(ji)與適合低(di)溫系統(tong)的(de)(de)高壓(ya)制(zhi)冷劑(ji)。由于低(di)溫時(shi)高壓(ya)制(zhi)冷劑(ji)氣體(ti)的(de)(de)比容(rong)較中(zhong)壓(ya)制(zhi)冷劑(ji)的(de)(de)比容(rong)小得多(duo)，因此，在低(di)溫時(shi)同一(yi)型號的(de)(de)壓縮機作復疊(die)制(zhi)冷(leng)較雙(shuang)級(ji)壓縮制(zhi)冷(leng)的(de)制冷量大(da)數倍(bei)，選用復疊制冷(leng)系統(tong)(tong)冷(leng)水機可節約(yue)大(da)量投資及建筑面積(ji)。而且高壓(ya)(ya)制冷(leng)劑在低溫(wen)時吸入(ru)壓(ya)(ya)力大(da)于(yu)或(huo)接近于(yu)一個大(da)氣(qi)壓(ya)(ya)下(xia)工作，不會像雙級低溫(wen)系統(tong)(tong)那(nei)樣經常(chang)往系統(tong)(tong)滲入(ru)空(kong)氣(qi)。
曾經(jing)有工程師就用R13做(zuo)低溫級(ji)，R22做(zuo)高溫級(ji)的(de)(de)(de)二(er)元復(fu)疊(die)制冷(leng)系(xi)(xi)(xi)統作一(yi)比較(jiao)，相同(tong)冷(leng)量設備投(tou)資(zi)，雙(shuang)(shuang)級(ji)壓(ya)縮(suo)(suo)制冷(leng)系(xi)(xi)(xi)統冷(leng)水機是(shi)復(fu)疊(die)制冷(leng)系(xi)(xi)(xi)統冷(leng)水機的(de)(de)(de)三倍(bei)多(duo)。電(dian)動機安裝功率(lv)，雙(shuang)(shuang)級(ji)壓(ya)縮(suo)(suo)制冷(leng)系(xi)(xi)(xi)統是(shi)復(fu)疊(die)制冷(leng)系(xi)(xi)(xi)統的(de)(de)(de)二(er)倍(bei)多(duo)。由于雙(shuang)(shuang)級(ji)制冷(leng)系(xi)(xi)(xi)統的(de)(de)(de)壓(ya)縮(suo)(suo)機數量多(duo)，摩(mo)擦功率(lv)增加，因此雙(shuang)(shuang)級(ji)壓(ya)縮(suo)(suo)機的(de)(de)(de)能量消耗為(wei)復(fu)疊(die)制冷(leng)系(xi)(xi)(xi)統的(de)(de)(de)1.5倍(bei)以上。
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