柜式離心(xin)風機選(xuan)用要點：

1. 離心風機風(feng)(feng)(feng)(feng)機(ji)箱(xiang)選(xuan)用控制參數為(wei)風(feng)(feng)(feng)(feng)量(liang)、全壓(ya)(ya)(ya)、效率、噪(zao)聲以及(ji)電機(ji)功率等。有離心式和軸流式。2. 通(tong)(tong)(tong)風(feng)(feng)(feng)(feng)機(ji)由(you)于設置了風(feng)(feng)(feng)(feng)機(ji)箱(xiang)，有利于消聲。3. 通(tong)(tong)(tong)風(feng)(feng)(feng)(feng)機(ji)選(xuan)型時，應考慮離心風(feng)(feng)(feng)(feng)機(ji)使(shi)用環境系(xi)統(tong)的(de)(de)(de)(de)漏風(feng)(feng)(feng)(feng)損失、計算誤差(cha)，以及(ji)通(tong)(tong)(tong)風(feng)(feng)(feng)(feng)機(ji)實(shi)際風(feng)(feng)(feng)(feng)量(liang)、風(feng)(feng)(feng)(feng)壓(ya)(ya)(ya)的(de)(de)(de)(de)負偏差(cha)，一般采(cai)用風(feng)(feng)(feng)(feng)量(liang)為(wei)1.05～1.1，風(feng)(feng)(feng)(feng)壓(ya)(ya)(ya)為(wei)1.10～1.15 的(de)(de)(de)(de)安(an)全系(xi)數。但(dan)也不采(cai)用過大(da)，以防止通(tong)(tong)(tong)風(feng)(feng)(feng)(feng)機(ji)長期處在(zai)低效率區運行。4. 注意管網阻力特(te)性與(yu)通(tong)(tong)(tong)風(feng)(feng)(feng)(feng)機(ji)特(te)性的(de)(de)(de)(de)匹配(pei)關系(xi)。為(wei)使(shi)通(tong)(tong)(tong)風(feng)(feng)(feng)(feng)機(ji)能穩定(ding)運行，應使(shi)通(tong)(tong)(tong)風(feng)(feng)(feng)(feng)機(ji)在(zai)其最高效率點附近工作(zuo), 通(tong)(tong)(tong)風(feng)(feng)(feng)(feng)機(ji)的(de)(de)(de)(de)工作(zuo)點位于性能曲線中全壓(ya)(ya)(ya)峰(feng)值點的(de)(de)(de)(de)右(you)側(ce)(ce)（即大(da)風(feng)(feng)(feng)(feng)量(liang)側(ce)(ce)，且一般位于全壓(ya)(ya)(ya)峰(feng)值的(de)(de)(de)(de)80%）。

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德州凱(kai)億  2022 04 30  于

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