如何選擇排煙風機
根據廚房空間大小和排煙罩的布置情況選擇排煙風機所需要的風量排煙風機計算方法如(ru)下:1、 總體排(pai)風(feng)(feng)(feng)(feng)(feng)量、根(gen)據(ju)廚(chu)房(fang)空間(jian)、每小(xiao)(xiao)時(shi)換氣(qi)40-60次。例(li)如(ru)廚(chu)房(fang)總面(mian)積(ji)160平米,高(gao)度3米。則(ze)需要(yao)通(tong)風(feng)(feng)(feng)(feng)(feng)量為(wei)160X3X60=28800m3/h。 2、 局部根(gen)據(ju)廚(chu)房(fang)排(pai)煙罩迎(ying)風(feng)(feng)(feng)(feng)(feng)面(mian)(排(pai)煙罩周長(chang)減去靠墻(qiang)的長(chang)度),每秒(miao)(miao)風(feng)(feng)(feng)(feng)(feng)速(su)在(zai)0.5米左右。比如(ru)廚(chu)房(fang)排(pai)煙罩周長(chang)25米、其中靠墻(qiang)長(chang)度為(wei)10米。則(ze)需要(yao)通(tong)風(feng)(feng)(feng)(feng)(feng)量為(wei)3600X(25-10)X0.5= 27000m3/h.二:根(gen)據(ju)管(guan)(guan)道(dao)的情(qing)況計算風(feng)(feng)(feng)(feng)(feng)機(ji)所需要(yao)的靜(jing)壓:1、 根(gen)據(ju)風(feng)(feng)(feng)(feng)(feng)量和風(feng)(feng)(feng)(feng)(feng)速(su)(風(feng)(feng)(feng)(feng)(feng)速(su)10-15米/秒(miao)(miao)左右)確定風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)截(jie)面(mian)積(ji)。風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)寬高(gao)比例(li)最好不要(yao)超(chao)過2:1(以節省材料和減小(xiao)(xiao)風(feng)(feng)(feng)(feng)(feng)阻)。2、 根(gen)據(ju)風(feng)(feng)(feng)(feng)(feng)速(su)、風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)截(jie)面(mian)積(ji)、彎頭、變徑等情(qing)況走(zou)向計算出風(feng)(feng)(feng)(feng)(feng)阻(即風(feng)(feng)(feng)(feng)(feng)機(ji)所需要(yao)的靜(jing)壓)。三:根(gen)據(ju)計算得出的風(feng)(feng)(feng)(feng)(feng)量、靜(jing)壓。選擇(ze)適合的風(feng)(feng)(feng)(feng)(feng)機(ji)。
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德州凱億 2022 05 06 于
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