按電量表計算；

　　未(wei)單獨(du)安裝電量表時(shi)，可按下列公(gong)式估算：

　　耗(hao)電(dian)(dian)量=1.73*平均電(dian)(dian)壓*平均功率因數*開機小(xiao)時/1000（kW·h）

　　為了(le)簡化計(ji)算(suan)，壓(ya)(ya)縮機(ji)(ji)耗電(dian)量可用下列公式計(ji)算(suan)：壓(ya)(ya)縮機(ji)(ji)耗電(dian)量=壓(ya)(ya)縮機(ji)(ji)分(fen)(fen)配(pei)積(ji)數*功率分(fen)(fen)配(pei)系數（kW·h）.制冷設備壓(ya)(ya)縮機(ji)(ji)分(fen)(fen)配(pei)積(ji)數=壓(ya)(ya)縮機(ji)(ji)平均耗用電(dian)量*開(kai)機(ji)(ji)小（A·h）功率分(fen)(fen)配(pei)系數=壓(ya)(ya)縮機(ji)(ji)總耗電(dian)量/各(ge)壓(ya)(ya)縮機(ji)(ji)分(fen)(fen)配(pei)積(ji)數合計(ji)數（kW/A）。

　　冷(leng)庫制冷(leng)設備生(sheng)產冷(leng)量必須(xu)耗電(dian)，電(dian)力是(shi)冷(leng)庫成本的主要(yao)部分。節約用電(dian)。既降低了(le)生(sheng)產成本，有(you)提高了(le)經濟效益(yi)，對改善經濟管(guan)理,提高冷(leng)藏企業的管(guan)理水平有(you)很重要(yao)的意義。

　　單(dan)位產(chan)品(pin)耗電(dian)(dian)量(liang)是將(jiang)冷(leng)(leng)(leng)(leng)(leng)庫內制冷(leng)(leng)(leng)(leng)(leng)用電(dian)(dian)和冷(leng)(leng)(leng)(leng)(leng)庫風機(ji)有電(dian)(dian)分配(pei)于各種冷(leng)(leng)(leng)(leng)(leng)凍品(pin)和冷(leng)(leng)(leng)(leng)(leng)藏(zang)品(pin)中(zhong)(zhong)，其(qi)中(zhong)(zhong).制冷(leng)(leng)(leng)(leng)(leng)設備用電(dian)(dian)包(bao)括(kuo)壓(ya)縮機(ji)和其(qi)他(ta)用電(dian)(dian)（如氨泵.水泵用電(dian)(dian)等），凍結間(jian)(jian)風機(ji)耗電(dian)(dian)由(you)冷(leng)(leng)(leng)(leng)(leng)凍品(pin)負擔(dan)，冷(leng)(leng)(leng)(leng)(leng)卻物(wu)冷(leng)(leng)(leng)(leng)(leng)藏(zang)間(jian)(jian)風機(ji)耗電(dian)(dian)由(you)冷(leng)(leng)(leng)(leng)(leng)卻冷(leng)(leng)(leng)(leng)(leng)產(chan)品(pin)負擔(dan)。雅(ya)俗(su)家耗電(dian)(dian)按(an)單(dan)位冷(leng)(leng)(leng)(leng)(leng)量(liang)耗電(dian)(dian)計算，其(qi)他(ta)用電(dian)(dian)也可按(an)冷(leng)(leng)(leng)(leng)(leng)間(jian)(jian)耗電(dian)(dian)量(liang)比列進行(xing)分配(pei)。

　　1.制冷(leng)(leng)(leng)設(she)(she)備(bei)運(yun)行(xing)時(shi)間(jian)(jian)(jian)的(de)計算為使(shi)室溫維持(chi)或降級到(dao)一(yi)定的(de)溫度，制冷(leng)(leng)(leng)設(she)(she)備(bei)必須運(yun)行(xing)的(de)時(shi)間(jian)(jian)(jian)稱為運(yun)行(xing)時(shi)間(jian)(jian)(jian)。用于(yu)計算的(de)時(shi)間(jian)(jian)(jian)為24h，設(she)(she)備(bei)容(rong)量(liang)(liang)(liang)以(yi)每小時(shi)的(de)Btu(Btu是(shi)能(neng)量(liang)(liang)(liang)的(de)單位(wei)名稱：1英(ying)熱單位(wei)=1Btu=0.252千卡=1054.85焦耳）標定，因此(ci)，24h乘以(yi)Btu/h就得(de)到(dao)制冷(leng)(leng)(leng)設(she)(she)備(bei)的(de)一(yi)般容(rong)量(liang)(liang)(liang)。（但大部(bu)分設(she)(she)備(bei)基(ji)本(ben)(ben)上(shang)根本(ben)(ben)不(bu)需(xu)(xu)(xu)要運(yun)行(xing)24h，融霜相對也需(xu)(xu)(xu)消耗一(yi)些(xie)時(shi)間(jian)(jian)(jian)和能(neng)源，但是(shi)相對較少(shao)，所(suo)以(yi)要將24h內總(zong)的(de)負(fu)荷除以(yi)需(xu)(xu)(xu)要運(yun)行(xing)時(shi)間(jian)(jian)(jian)）使(shi)用下列公式能(neng)較快地(di)確定制冷(leng)(leng)(leng)設(she)(she)備(bei)容(rong)量(liang)(liang)(liang)：需(xu)(xu)(xu)要的(de)設(she)(she)備(bei)容(rong)量(liang)(liang)(liang)：Btu/h=在24h總(zong)的(de)冷(leng)(leng)(leng)負(fu)荷/需(xu)(xu)(xu)要的(de)運(yun)行(xing)時(shi)間(jian)(jian)(jian)。

　　2.壓(ya)(ya)縮(suo)(suo)機(ji)(ji)(ji)(ji)耗(hao)電(dian)量(liang)(liang)(liang)的計(ji)算(suan)壓(ya)(ya)縮(suo)(suo)機(ji)(ji)(ji)(ji)單獨安(an)裝電(dian)量(liang)(liang)(liang)表(biao)時，按電(dian)量(liang)(liang)(liang)表(biao)計(ji)算(suan)；未單獨安(an)裝電(dian)量(liang)(liang)(liang)表(biao)時，可(ke)按下列(lie)公(gong)式估算(suan)：耗(hao)電(dian)量(liang)(liang)(liang)=1.73*平(ping)均(jun)(jun)電(dian)壓(ya)(ya)*平(ping)均(jun)(jun)功率因數(shu)*開機(ji)(ji)(ji)(ji)小時/1000（kW·h）為了簡化計(ji)算(suan)，壓(ya)(ya)縮(suo)(suo)機(ji)(ji)(ji)(ji)耗(hao)電(dian)量(liang)(liang)(liang)可(ke)用下列(lie)公(gong)式計(ji)算(suan)：壓(ya)(ya)縮(suo)(suo)機(ji)(ji)(ji)(ji)耗(hao)電(dian)量(liang)(liang)(liang)=壓(ya)(ya)縮(suo)(suo)機(ji)(ji)(ji)(ji)分配積(ji)數(shu)*功率分配系(xi)數(shu)（kW·h）.制冷設備(bei)壓(ya)(ya)縮(suo)(suo)機(ji)(ji)(ji)(ji)分配積(ji)數(shu)=壓(ya)(ya)縮(suo)(suo)機(ji)(ji)(ji)(ji)平(ping)均(jun)(jun)耗(hao)用電(dian)量(liang)(liang)(liang)*開機(ji)(ji)(ji)(ji)小（A·h）功率分配系(xi)數(shu)=壓(ya)(ya)縮(suo)(suo)機(ji)(ji)(ji)(ji)總耗(hao)電(dian)量(liang)(liang)(liang)/各壓(ya)(ya)縮(suo)(suo)機(ji)(ji)(ji)(ji)分配積(ji)數(shu)合計(ji)數(shu)（kW/A）。