戶外不銹鋼風管
尺寸計算
風管尺寸=風量/風速
風量=房(fang)間(jian)面積*房(fang)間(jian)高*換氣次數
例(li)子:風量4萬,風速9m/s,
得風管尺寸=40000/9/3600=1.23平方
1.23=1.5*0.82
所以 風(feng)管尺寸為1500*800 。
管道直徑設計計算步驟:
1、繪制通(tong)風或空(kong)調系(xi)統軸測(ce)圖,對各管段(duan)進行(xing)編號(hao),標注(zhu)長度和風量。管段(duan)長度一(yi)般按兩管件中心(xin)線長度計(ji)算,不扣除管件(如(ru)三通(tong),彎頭)本身的長度。
2、確定合理的(de)空氣速(su)流
風(feng)管(guan)內的(de)空(kong)(kong)氣流(liu)速對(dui)通風(feng)、空(kong)(kong)調系(xi)(xi)統(tong)(tong)(tong)的(de)經(jing)濟型有較(jiao)大(da)的(de)影響(xiang)。流(liu)速高,風(feng)管(guan)斷(duan)面(mian)(mian)小(xiao),材料耗(hao)用(yong)少(shao),建造費用(yong)小(xiao);但(dan)是(shi)系(xi)(xi)統(tong)(tong)(tong)的(de)阻(zu)力大(da),動(dong)力消耗(hao)增(zeng)大(da),運用(yong)費用(yong)增(zeng)加(jia)。對(dui)除塵(chen)系(xi)(xi)統(tong)(tong)(tong)會(hui)增(zeng)加(jia)設備和管(guan)道(dao)的(de)磨損,對(dui)空(kong)(kong)調系(xi)(xi)統(tong)(tong)(tong)會(hui)增(zeng)加(jia)噪聲。流(liu)速低(di)(di),阻(zu)力小(xiao),動(dong)力消耗(hao)少(shao);但(dan)是(shi)風(feng)管(guan)斷(duan)面(mian)(mian)大(da),材料和建造費用(yong)大(da),風(feng)管(guan)占用(yong)的(de)空(kong)(kong)間也增(zeng)大(da)。對(dui)除塵(chen)系(xi)(xi)統(tong)(tong)(tong)流(liu)速過低(di)(di)會(hui)使粉塵(chen)沉積堵塞管(guan)道(dao)。