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bihuanzhilengjizhilengshibingbucongwaibuyinrukongqi，zheyangkeyibimianduineibuzujiandewuranweihai。zhilengjitongguoneibudezhengfaqidaizoukongzhiguineidereliang，zaitongguolengningqidechuqikoujiangreliangshifang。
製(zhi)冷(leng)機(ji)可(ke)以(yi)在(zai)控(kong)製(zhi)櫃(gui)內(nei)所(suo)允(yun)許(xu)的(de)最(zui)高(gao)氣(qi)溫(wen)必(bi)須(xu)保(bao)持(chi)低(di)於(yu)外(wai)部(bu)環(huan)境(jing)溫(wen)度(du)時(shi)使(shi)用(yong)，使(shi)用(yong)製(zhi)冷(leng)機(ji)的(de)的(de)另(ling)一(yi)個(ge)原(yuan)因(yin)是(shi)製(zhi)冷(leng)機(ji)的(de)外(wai)部(bu)尺(chi)寸(cun)小(xiao)於(yu)相(xiang)同(tong)功(gong)率(lv)的(de)熱(re)交(jiao)換(huan)器(qi)。在(zai)很(hen)高(gao)的(de)溫(wen)度(du)下(xia)，或(huo)者(zhe)熱(re)負(fu)載(zai)要(yao)求(qiu)很(hen)高(gao)的(de)製(zhi)冷(leng)量(liang)時(shi)通(tong)常(chang)也(ye)使(shi)用(yong)製(zhi)冷(leng)機(ji)。盡(jin)管(guan)同(tong)非(fei)定(ding)製(zhi)空(kong)調(tiao)係(xi)統(tong)很(hen)相(xiang)似(si)，這(zhe)些(xie)專(zhuan)門(men)設(she)計(ji)的(de)製(zhi)冷(leng)係(xi)統(tong)還(hai)是(shi)有(you)些(xie)細(xi)微(wei)的(de)差(cha)別(bie)，為(wei)了(le)避(bi)免(mian)控(kong)製(zhi)櫃(gui)內(nei)的(de)組(zu)件(jian)受(shou)到(dao)熱(re)負(fu)荷(he)的(de)衝(chong)擊(ji)，通(tong)常(chang)會(hui)使(shi)用(yong)比(bi)非(fei)定(ding)製(zhi)空(kong)調(tiao)係(xi)統(tong)高(gao)的(de)蒸(zheng)發(fa)器(qi)溫(wen)度(du)，另(ling)一(yi)個(ge)非(fei)標(biao)準(zhun)化(hua)的(de)特(te)性(xing)是(shi)監(jian)測(ce)和(he)報(bao)告(gao)驅(qu)動(dong)程(cheng)序(xu)，它(ta)能(neng)保(bao)證(zheng)位(wei)於(yu)遠(yuan)端(duan)的(de)工(gong)作(zuo)人(ren)員(yuan)能(neng)獲(huo)得(de)熱(re)管(guan)理(li)係(xi)統(tong)的(de)運(yun)行(xing)信(xin)息(xi)以(yi)及(ji)了(le)解(jie)控(kong)製(zhi)櫃(gui)內(nei)的(de)運(yun)行(xing)狀(zhuang)態(tai)。雷(lei)子(zi)克(ke)公(gong)司(si)的(de)製(zhi)冷(leng)機(ji)設(she)計(ji)為(wei)可(ke)以(yi)運(yun)行(xing)在(zai)高(gao)於(yu)55℃環境溫度中（例如熱帶國家）
盡(jin)管(guan)蒸(zheng)發(fa)器(qi)能(neng)去(qu)除(chu)一(yi)些(xie)濕(shi)氣(qi)，但(dan)如(ru)果(guo)在(zai)維(wei)護(hu)時(shi)控(kong)製(zhi)櫃(gui)被(bei)打(da)開(kai)，要(yao)控(kong)製(zhi)控(kong)製(zhi)櫃(gui)內(nei)的(de)濕(shi)氣(qi)不(bu)是(shi)容(rong)易(yi)的(de)。控(kong)製(zhi)櫃(gui)內(nei)沒(mei)有(you)外(wai)部(bu)環(huan)境(jing)空(kong)氣(qi)的(de)滲(shen)透(tou)，當(dang)控(kong)製(zhi)櫃(gui)內(nei)的(de)溫(wen)度(du)升(sheng)高(gao)時(shi)，通(tong)常(chang)濕(shi)度(du)也(ye)相(xiang)對(dui)較(jiao)低(di)。閉(bi)環(huan)製(zhi)冷(leng)機(ji)可(ke)以(yi)很(hen)安(an)全(quan)地(di)安(an)裝(zhuang)於(yu)控(kong)製(zhi)櫃(gui)，控(kong)製(zhi)櫃(gui)的(de)防(fang)水(shui)和(he)防(fang)塵(chen)率(lv)必(bi)須(xu)穩(wen)定(ding)。
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