在(zai)(zai)探討這(zhe)個(ge)(ge)問題之前，我(wo)(wo)們先做(zuo)個(ge)(ge)試驗(yan)。下邊我(wo)(wo)們驗(yan)證熱(re)(re)氣(qi)(qi)流和(he)(he)煙(yan)(yan)(yan)塵(chen)的(de)(de)流動，在(zai)(zai)閑置(zhi)廠房室(shi)內，我(wo)(wo)們在(zai)(zai)室(shi)內地面(mian)(mian)的(de)(de)四個(ge)(ge)角(jiao)落位(wei)置(zhi)點燃木(mu)柴(chai)，木(mu)柴(chai)引燃，并(bing)引發煙(yan)(yan)(yan)霧(wu)和(he)(he)火(huo)苗。煙(yan)(yan)(yan)霧(wu)和(he)(he)熱(re)(re)氣(qi)(qi)幾乎垂直的(de)(de)上(shang)升，并(bing)匯(hui)集(ji)在(zai)(zai)屋脊(ji)處(chu)，此項(xiang)實(shi)驗(yan)驗(yan)證了熱(re)(re)氣(qi)(qi)流和(he)(he)煙(yan)(yan)(yan)塵(chen)直線上(shang)升的(de)(de)原理。怎么使通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)在(zai)(zai)使用(yong)(yong)環境(jing)中發揮最(zui)(zui)大(da)的(de)(de)性(xing)(xing)能(neng)(neng)呢？通(tong)(tong)(tong)(tong)過使用(yong)(yong)我(wo)(wo)們發現熱(re)(re)氣(qi)(qi)煙(yan)(yan)(yan)塵(chen)聚(ju)集(ji)在(zai)(zai)廠房屋脊(ji)處(chu)，在(zai)(zai)這(zhe)個(ge)(ge)位(wei)置(zhi)預留通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)洞口是最(zui)(zui)佳的(de)(de)，所以說主(zhu)脊(ji)式通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)能(neng)(neng)使通(tong)(tong)(tong)(tong)風氣(qi)(qi)樓性(xing)(xing)能(neng)(neng)最(zui)(zui)大(da)化。當然(ran)了，對(dui)于跨度較(jiao)大(da)和(he)(he)數連跨的(de)(de)廠房，室(shi)內有較(jiao)多熱(re)(re)源和(he)(he)煙(yan)(yan)(yan)塵(chen)為了及(ji)時快速排出(chu)(chu)熱(re)(re)氣(qi)(qi)和(he)(he)煙(yan)(yan)(yan)塵(chen)，一(yi)(yi)般需要(yao)做(zuo)順坡(po)式縱向通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)。不過順坡(po)式通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)的(de)(de)侯口比主(zhu)脊(ji)式氣(qi)(qi)樓要(yao)小。在(zai)(zai)實(shi)現通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)功能(neng)(neng)最(zui)(zui)大(da)化的(de)(de)同時，還要(yao)對(dui)通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)的(de)(de)規(gui)格(ge)型號(hao)(hao)、材(cai)質材(cai)料(liao)、使用(yong)(yong)環境(jing)等進行(xing)綜合考量，即在(zai)(zai)一(yi)(yi)定時間內的(de)(de)通(tong)(tong)(tong)(tong)風換氣(qi)(qi)量是決定通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)規(gui)格(ge)型號(hao)(hao)的(de)(de)關鍵。在(zai)(zai)這(zhe)一(yi)(yi)前提(ti)下，通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)預留洞口尺寸和(he)(he)通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)的(de)(de)外觀(guan)形狀及(ji)內部結構才(cai)(cai)能(neng)(neng)確定下來(lai)。現階段(duan)工業建筑在(zai)(zai)采(cai)用(yong)(yong)通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)型號(hao)(hao)規(gui)格(ge)方面(mian)(mian)一(yi)(yi)般由專業設(she)計院進行(xing)甄選設(she)計，并(bing)有專業生(sheng)產廠家(jia)進行(xing)天窗(chuang)(chuang)圖紙的(de)(de)二次深化，才(cai)(cai)能(neng)(neng)加工生(sheng)產出(chu)(chu)合格(ge)的(de)(de)、有效的(de)(de)通(tong)(tong)(tong)(tong)風天窗(chuang)(chuang)產品。