戶外不銹鋼風管
尺寸計算
風管尺寸=風量/風速
風量(liang)=房間面積*房間高(gao)*換氣次數(shu)
例子(zi):風量4萬,風速(su)9m/s,
得(de)風(feng)管尺(chi)寸=40000/9/3600=1.23平(ping)方
1.23=1.5*0.82
所以 風管尺寸為(wei)1500*800 。
管道直徑設計計算步驟:
1、繪制通風或空(kong)調系統軸測圖,對各管(guan)段(duan)進行編(bian)號,標注(zhu)長(chang)度(du)和(he)風量。管(guan)段(duan)長(chang)度(du)一(yi)般按(an)兩管(guan)件中心線長(chang)度(du)計算(suan),不扣除(chu)管(guan)件(如三通,彎頭)本(ben)身的長(chang)度(du)。
2、確定合理的空氣速流
風(feng)(feng)管(guan)內的空氣流速(su)對(dui)通風(feng)(feng)、空調(diao)(diao)系(xi)(xi)統(tong)的經濟(ji)型有較(jiao)大的影響。流速(su)高,風(feng)(feng)管(guan)斷面小,材(cai)料耗(hao)用(yong)(yong)(yong)少(shao),建(jian)造費用(yong)(yong)(yong)小;但是(shi)系(xi)(xi)統(tong)的阻力(li)(li)大,動力(li)(li)消耗(hao)增(zeng)(zeng)大,運(yun)用(yong)(yong)(yong)費用(yong)(yong)(yong)增(zeng)(zeng)加(jia)。對(dui)除(chu)塵系(xi)(xi)統(tong)會(hui)(hui)增(zeng)(zeng)加(jia)設備和(he)(he)管(guan)道(dao)的磨損,對(dui)空調(diao)(diao)系(xi)(xi)統(tong)會(hui)(hui)增(zeng)(zeng)加(jia)噪(zao)聲。流速(su)低,阻力(li)(li)小,動力(li)(li)消耗(hao)少(shao);但是(shi)風(feng)(feng)管(guan)斷面大,材(cai)料和(he)(he)建(jian)造費用(yong)(yong)(yong)大,風(feng)(feng)管(guan)占(zhan)用(yong)(yong)(yong)的空間也增(zeng)(zeng)大。對(dui)除(chu)塵系(xi)(xi)統(tong)流速(su)過低會(hui)(hui)使粉(fen)塵沉(chen)積堵塞管(guan)道(dao)。