戶外不銹鋼風管
尺寸計算
風管尺寸=風量/風速
風量=房間(jian)面積(ji)*房間(jian)高*換氣次數
例子(zi):風(feng)量4萬,風(feng)速9m/s,
得風(feng)管尺寸=40000/9/3600=1.23平方
1.23=1.5*0.82
所(suo)以 風管(guan)尺(chi)寸為1500*800 。
管道直徑設計計算步驟:
1、繪制通風或空調系統(tong)軸測圖,對各管(guan)(guan)段進行(xing)編號,標注長(chang)(chang)度和風量。管(guan)(guan)段長(chang)(chang)度一般按兩管(guan)(guan)件(jian)中心(xin)線長(chang)(chang)度計算,不扣除管(guan)(guan)件(jian)(如(ru)三通,彎頭)本(ben)身的長(chang)(chang)度。
2、確(que)定合理的空氣速流
風管(guan)內的(de)(de)空(kong)(kong)氣流(liu)速對通風、空(kong)(kong)調系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)(de)經濟型有較(jiao)大的(de)(de)影響(xiang)。流(liu)速高,風管(guan)斷面小,材料耗(hao)用(yong)少(shao),建造(zao)費用(yong)小;但是系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)(de)阻力(li)大,動力(li)消(xiao)(xiao)耗(hao)增(zeng)大,運用(yong)費用(yong)增(zeng)加(jia)。對除(chu)塵(chen)系(xi)(xi)(xi)統(tong)(tong)(tong)會增(zeng)加(jia)設備和管(guan)道(dao)的(de)(de)磨損,對空(kong)(kong)調系(xi)(xi)(xi)統(tong)(tong)(tong)會增(zeng)加(jia)噪聲。流(liu)速低(di),阻力(li)小,動力(li)消(xiao)(xiao)耗(hao)少(shao);但是風管(guan)斷面大,材料和建造(zao)費用(yong)大,風管(guan)占用(yong)的(de)(de)空(kong)(kong)間也增(zeng)大。對除(chu)塵(chen)系(xi)(xi)(xi)統(tong)(tong)(tong)流(liu)速過低(di)會使粉塵(chen)沉積堵塞管(guan)道(dao)。