全(quan)(quan)面(mian)通(tong)(tong)風(feng)(feng)可(ke)以(yi)利用(yong)(yong)機(ji)械通(tong)(tong)風(feng)(feng)來實(shi)現(xian)，也可(ke)以(yi)利用(yong)(yong)自然通(tong)(tong)風(feng)(feng)來實(shi)現(xian)。按系統持(chi)征(zheng)不(bu)同(tong)，全(quan)(quan)面(mian)通(tong)(tong)風(feng)(feng)可(ke)分(fen)為(wei)全(quan)(quan)面(mian)送風(feng)(feng)，全(quan)(quan)面(mian)排(pai)(pai)風(feng)(feng)和(he)全(quan)(quan)面(mian)送、排(pai)(pai)風(feng)(feng)三類(lei)。按作(zuo)用(yong)(yong)機(ji)理不(bu)同(tong)，全(quan)(quan)面(mian)通(tong)(tong)風(feng)(feng)可(ke)分(fen)為(wei)稀(xi)釋通(tong)(tong)風(feng)(feng)和(he)置換通(tong)(tong)風(feng)(feng)兩類(lei)。

1、稀釋通風

稀釋通風又稱混合通風，即送人比(bi)室內(nei)污染物(wu)濃度(du)低的空(kong)氣與室內(nei)空(kong)氣混合，以此降低室內(nei)污染物(wu)的濃度(du)，達到衛生標難。

2、置換通風  在置換通風系統中(zhong)，新鮮冷空氣(qi)由房(fang)間底(di)部(bu)以很低的(de)(de)速度(du)(0.03-0.59t/s)送人(ren)，送風溫差僅為2-4Y。送入的(de)(de)新鮮空氣(qi)因密度(du)大而(er)像水一樣彌漫整(zheng)個房(fang)間的(de)(de)底(di)部(bu)，熱源引(yin)起的(de)(de)熱對流(liu)(liu)氣(qi)流(liu)(liu)使室(shi)內產生垂直的(de)(de)溫度(du)禪度(du)，氣(qi)流(liu)(liu)緩慢上(shang)升，脫離工作區，將余熱和(he)污(wu)染物推向房(fang)間頂部(bu)，由設(she)在(zai)頂棚上(shang)或(huo)房(fang)間頂部(bu)的(de)(de)排風口(kou)直接排出(chu)。

內空氣(qi)近似活塞狀流動(dong)，使(shi)污染物隨空氣(qi)流動(dong)從(cong)房(fang)間頂部排出，工(gong)作區(qu)基本(ben)處于(yu)送入(ru)空氣(qi)中，即工(gong)作區(qu)污染物濃(nong)度(du)(du)約等于(yu)送人空氣(qi)的(de)(de)濃(nong)度(du)(du)，這(zhe)是置換通(tong)風與傳統的(de)(de)稀釋(shi)全面通(tong)風的(de)(de)區(qu)別(bie)，顯然置換通(tong)風的(de)(de)通(tong)風效果比稀釋(shi)通(tong)風好(hao)得多。

局(ju)部(bu)(bu)通(tong)風(feng)就是利用局(ju)部(bu)(bu)氣(qi)(qi)流，使局(ju)部(bu)(bu)地點不受有(you)害(hai)物(wu)的污(wu)染(ran)，造成(cheng)良好的空(kong)氣(qi)(qi)環(huan)境。局(ju)部(bu)(bu)通(tong)風(feng)系統分為局(ju)部(bu)(bu)送風(feng)和局(ju)部(bu)(bu)排(pai)風(feng)兩大(da)類。局(ju)部(bu)(bu)排(pai)風(feng)是將(jiang)污(wu)染(ran)物(wu)就地捕集、凈化(hua)后排(pai)放至室外。局(ju)部(bu)(bu)送風(feng)是將(jiang)經(jing)過處理的、合(he)乎(hu)要求(qiu)的空(kong)氣(qi)(qi)送到局(ju)部(bu)(bu)工(gong)作(zuo)(zuo)地點，以保(bao)(bao)證局(ju)部(bu)(bu)區域(yu)的空(kong)氣(qi)(qi)條件。局(ju)部(bu)(bu)通(tong)風(feng)方式作(zuo)(zuo)為保(bao)(bao)證工(gong)作(zuo)(zuo)和生活環(huan)境空(kong)氣(qi)(qi)品質、防止(zhi)室內環(huan)境污(wu)染(ran)的技術措施應(ying)優先考慮。