"氨(an)(an)"作為(wei)一種低(di)價的(de)制(zhi)冷(leng)(leng)(leng)劑(ji)被普遍應用在淺談超低(di)溫冷(leng)(leng)(leng)庫載(zai)冷(leng)(leng)(leng)劑(ji)間(jian)接制(zhi)冷(leng)(leng)(leng)系統及食品速凍等行(xing)業，但是氨(an)(an)具有毒性和(he)刺激(ji)性氣息，遇明(ming)火會發作爆(bao)炸，一旦泄(xie)露(lu)會形成嚴重(zhong)的(de)人身傷亡事故，同時淺談超低(di)溫冷(leng)(leng)(leng)庫載(zai)冷(leng)(leng)(leng)劑(ji)間(jian)接制(zhi)冷(leng)(leng)(leng)系統主要建立在人口密集的(de)市場(chang)區域(yu)。2013年吉林省和(he)上海市發生的(de)兩起特大液氨(an)(an)泄(xie)露(lu)事故，引(yin)起了制(zhi)冷(leng)(leng)(leng)行(xing)業的(de)廣泛關注。載(zai)冷(leng)(leng)(leng)劑(ji)間(jian)接制(zhi)冷(leng)(leng)(leng)系統有效解(jie)決了這個問題。

  間接制冷：載冷劑與制冷劑進行低溫傳熱，低溫的載冷劑被泵加壓輸送到淺談超低溫冷庫載冷(leng)(leng)(leng)(leng)劑(ji)間接(jie)(jie)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)系統(tong)間內循(xun)環，從而(er)達(da)到冷(leng)(leng)(leng)(leng)凍(dong)冷(leng)(leng)(leng)(leng)藏的(de)(de)(de)作用(yong)。在(zai)直接(jie)(jie)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)不易應用(yong)的(de)(de)(de)位置或者(zhe)不可運用(yong)直接(jie)(jie)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)的(de)(de)(de)特殊環境中(zhong)(zhong)，常常用(yong)載冷(leng)(leng)(leng)(leng)劑(ji)替代(dai)直接(jie)(jie)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)用(yong)來冷(leng)(leng)(leng)(leng)卻被冷(leng)(leng)(leng)(leng)卻物體(ti)(如(ru)：中(zhong)(zhong)央(yang)空調系統(tong)、冰蓄冷(leng)(leng)(leng)(leng)系統(tong)等)。載冷(leng)(leng)(leng)(leng)劑(ji)：一種以(yi)間接(jie)(jie)冷(leng)(leng)(leng)(leng)卻方式(shi)工作的(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)裝置中(zhong)(zhong)，將被冷(leng)(leng)(leng)(leng)卻物體(ti)的(de)(de)(de)熱量傳給(gei)正在(zai)蒸發(fa)的(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)的(de)(de)(de)物質(如(ru)：鹽水、乙二醇、水、冰河冷(leng)(leng)(leng)(leng)媒)。制(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)氨優良(liang)的(de)(de)(de)物性參數是首選，同時我們目(mu)的(de)(de)(de)也是減(jian)少氨的(de)(de)(de)充注(zhu)量，故選擇(ze)氨壓縮機。

  目(mu)前(qian)，氨(an)制(zhi)(zhi)冷(leng)(leng)壓(ya)(ya)縮機(ji)(ji)多(duo)為(wei)活(huo)塞式(shi)和螺桿式(shi)制(zhi)(zhi)冷(leng)(leng)壓(ya)(ya)縮機(ji)(ji)。前(qian)者出(chu)現較(jiao)早，使(shi)用(yong)(yong)廣泛，其優點在于(yu)：使(shi)用(yong)(yong)方(fang)便(bian)、運行可靠、管(guan)理經(jing)驗成熟，冷(leng)(leng)量(liang)(liang)范圍大、單(dan)位制(zhi)(zhi)冷(leng)(leng)量(liang)(liang)耗電量(liang)(liang)較(jiao)低，加工(gong)較(jiao)簡單(dan)，造價較(jiao)為(wei)低廉;其缺(que)(que)點是壓(ya)(ya)縮機(ji)(ji)體積(ji)大、耗金屬多(duo)、占地(di)面(mian)積(ji)大，易(yi)(yi)損(sun)部件(jian)多(duo)，維護費(fei)用(yong)(yong)高(gao)(gao)，單(dan)機(ji)(ji)產量(liang)(liang)不(bu)能(neng)太大，能(neng)量(liang)(liang)無級調節(jie)比較(jiao)困難。而(er)(er)螺桿式(shi)壓(ya)(ya)縮機(ji)(ji)的結構(gou)簡單(dan)、體積(ji)小、易(yi)(yi)損(sun)部件(jian)少、重(zhong)量(liang)(liang)輕，振(zhen)動(dong)小，容積(ji)效率(lv)高(gao)(gao)、對濕壓(ya)(ya)縮不(bu)敏感，能(neng)實現無級調節(jie);其缺(que)(que)點是單(dan)位冷(leng)(leng)量(liang)(liang)耗電比活(huo)塞式(shi)稍高(gao)(gao)，噴油(you)冷(leng)(leng)卻使(shi)潤滑油(you)系(xi)(xi)統(tong)(tong)復雜而(er)(er)龐(pang)大，耗油(you)高(gao)(gao)，噪聲大，螺桿的加工(gong)精度要求高(gao)(gao)。相對而(er)(er)言，因螺桿式(shi)壓(ya)(ya)縮機(ji)(ji)能(neng)方(fang)便(bian)地(di)控制(zhi)(zhi)排氣(qi)溫度，在氨(an)制(zhi)(zhi)冷(leng)(leng)系(xi)(xi)統(tong)(tong)中將(jiang)優于(yu)活(huo)塞式(shi)。采用(yong)(yong)直接制(zhi)(zhi)冷(leng)(leng)系(xi)(xi)統(tong)(tong)，制(zhi)(zhi)冷(leng)(leng)劑(ji)輸送至蒸(zheng)發(fa)器進行制(zhi)(zhi)冷(leng)(leng)所經(jing)管(guan)路(lu)大多(duo)較(jiao)長，管(guan)道冷(leng)(leng)量(liang)(liang)損(sun)失大，制(zhi)(zhi)冷(leng)(leng)劑(ji)壓(ya)(ya)降(jiang)與過熱度都(dou)較(jiao)大，壓(ya)(ya)縮機(ji)(ji)輸氣(qi)系(xi)(xi)數降(jiang)低，嚴重(zhong)影響壓(ya)(ya)縮機(ji)(ji)效率(lv)。采用(yong)(yong)冰河冷(leng)(leng)媒間接制(zhi)(zhi)冷(leng)(leng)系(xi)(xi)統(tong)(tong)，集(ji)中安裝制(zhi)(zhi)冷(leng)(leng)系(xi)(xi)統(tong)(tong)設備(bei)，壓(ya)(ya)縮機(ji)(ji)與蒸(zheng)發(fa)器距離較(jiao)小，制(zhi)(zhi)冷(leng)(leng)劑(ji)無需遠(yuan)距離輸送，其壓(ya)(ya)降(jiang)與過熱度小，壓(ya)(ya)縮機(ji)(ji)效率(lv)高(gao)(gao)。

  淺談(tan)超低溫(wen)(wen)冷(leng)(leng)庫載冷(leng)(leng)劑(ji)間(jian)(jian)接(jie)(jie)制冷(leng)(leng)系(xi)統(tong)(tong)載冷(leng)(leng)劑(ji)制冷(leng)(leng)系(xi)統(tong)(tong)相比(bi)制冷(leng)(leng)存在很(hen)多優勢，減少氨的充注量，降低生產(chan)安全(quan)(quan)風險，有(you)效的保障人身安全(quan)(quan)。間(jian)(jian)接(jie)(jie)制冷(leng)(leng)只有(you)載冷(leng)(leng)劑(ji)進入淺談(tan)超低溫(wen)(wen)冷(leng)(leng)庫載冷(leng)(leng)劑(ji)間(jian)(jian)接(jie)(jie)制冷(leng)(leng)系(xi)統(tong)(tong)車間(jian)(jian)，常(chang)壓循環，維(wei)修維(wei)護簡單、工業用電波(bo)峰波(bo)谷蓄(xu)冷(leng)(leng)、回收壓縮機熱量融霜、氨庫可實現不停產(chan)改造。