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你知道南京鑫鼎通風管道的通風原則嗎

發布時間:2019-02-17 11:38 瀏覽次數:1606

全(quan)(quan)面(mian)通(tong)(tong)(tong)風(feng)(feng)可(ke)以(yi)利用機械(xie)通(tong)(tong)(tong)風(feng)(feng)來實(shi)現(xian),也可(ke)以(yi)利用自然通(tong)(tong)(tong)風(feng)(feng)來實(shi)現(xian)o按(an)系統(tong)持征不(bu)同,全(quan)(quan)面(mian)通(tong)(tong)(tong)風(feng)(feng)可(ke)分為全(quan)(quan)面(mian)送(song)風(feng)(feng),全(quan)(quan)面(mian)排風(feng)(feng)和全(quan)(quan)面(mian)送(song)、排風(feng)(feng)三類。按(an)作用機理不(bu)同,全(quan)(quan)面(mian)通(tong)(tong)(tong)風(feng)(feng)可(ke)分為稀釋通(tong)(tong)(tong)風(feng)(feng)和置換通(tong)(tong)(tong)風(feng)(feng)兩類。

(1)稀(xi)釋(shi)通風(feng)稀(xi)釋(shi)通風(feng)又(you)稱混合通風(feng),即送人(ren)比室內(nei)污(wu)染(ran)物濃度低的(de)空氣(qi)與室內(nei)空氣(qi)混合,以此降低室內(nei)污(wu)染(ran)物的(de)濃度,達到衛生(sheng)標難.

(2)置換通風在置換通風系統中,新鮮冷空氣由房間(jian)底部(bu)以很(hen)低(di)的速度(du)(o.03o.59t/s)送人,送風溫差僅為24Y。送入的新鮮空氣因(yin)密(mi)度(du)大而像水一樣彌漫整個(ge)房間(jian)的底部(bu),熱(re)源(yuan)引起(qi)的熱(re)對流氣流使室內產(chan)生垂直(zhi)的溫度(du)禪度(du),氣流緩慢上(shang)升,脫(tuo)離(li)工作區,將余熱(re)和污染物推向(xiang)房間(jian)頂部(bu),最后由設在頂棚上(shang)或房間(jian)頂部(bu)的排(pai)風口直(zhi)接(jie)排(pai)出。

室內空(kong)(kong)氣(qi)近似活(huo)塞狀流動(dong).使污(wu)(wu)染(ran)物隨空(kong)(kong)氣(qi)流動(dong)從房間頂部排出,工作(zuo)區(qu)基本處于送入空(kong)(kong)氣(qi)中,即工作(zuo)區(qu)污(wu)(wu)染(ran)物濃度(du)約等于送人空(kong)(kong)氣(qi)的(de)濃度(du),這是置換通風與傳(chuan)統的(de)稀釋全(quan)面通風的(de)最大區(qu)別。顯(xian)然(ran)置換通風的(de)通風效(xiao)果比(bi)稀釋通風好得多。

2.局部(bu)通風

局(ju)部通風就(jiu)是利用局(ju)部氣流,使(shi)局(ju)部地點(dian)不受有害物(wu)的污染,造成良好的空氣環境。

局(ju)(ju)部(bu)(bu)(bu)通風系統分為局(ju)(ju)部(bu)(bu)(bu)送(song)風和(he)局(ju)(ju)部(bu)(bu)(bu)排風兩大類。局(ju)(ju)部(bu)(bu)(bu)排風是(shi)將污染(ran)物就地捕集、凈化后排放至室外。局(ju)(ju)部(bu)(bu)(bu)送(song)風是(shi)將經過(guo)處理的、合(he)乎要求的空氣(qi)送(song)到局(ju)(ju)部(bu)(bu)(bu)工作地點(dian),以保證局(ju)(ju)部(bu)(bu)(bu)區域的空氣(qi)條件。

局部通風(feng)方(fang)式作(zuo)為保證工(gong)作(zuo)和生活環境空氣品質、防止室內環境污(wu)染(ran)的技術措施應(ying)優先考慮(lv)。