在(zai)探討(tao)這(zhe)個問題之前，我(wo)們(men)先做(zuo)個試驗(yan)(yan)。下邊我(wo)們(men)驗(yan)(yan)證(zheng)熱(re)氣(qi)(qi)(qi)(qi)流(liu)和(he)(he)煙(yan)(yan)(yan)塵(chen)的(de)(de)(de)(de)流(liu)動，在(zai)閑(xian)置廠房(fang)室(shi)(shi)(shi)內(nei)，我(wo)們(men)在(zai)室(shi)(shi)(shi)內(nei)地(di)面的(de)(de)(de)(de)四個角落位置點燃木(mu)柴，木(mu)柴引(yin)燃，并(bing)引(yin)發(fa)煙(yan)(yan)(yan)霧(wu)和(he)(he)火苗。煙(yan)(yan)(yan)霧(wu)和(he)(he)熱(re)氣(qi)(qi)(qi)(qi)幾(ji)乎(hu)垂直的(de)(de)(de)(de)上升，并(bing)匯(hui)集在(zai)屋(wu)脊(ji)處(chu)，此項實(shi)驗(yan)(yan)驗(yan)(yan)證(zheng)了熱(re)氣(qi)(qi)(qi)(qi)流(liu)和(he)(he)煙(yan)(yan)(yan)塵(chen)直線上升的(de)(de)(de)(de)原理。怎么使(shi)通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)在(zai)使(shi)用環境中發(fa)揮最大(da)(da)的(de)(de)(de)(de)性能呢？通(tong)(tong)(tong)(tong)(tong)(tong)過(guo)使(shi)用我(wo)們(men)發(fa)現熱(re)氣(qi)(qi)(qi)(qi)煙(yan)(yan)(yan)塵(chen)聚(ju)集在(zai)廠房(fang)屋(wu)脊(ji)處(chu)，在(zai)這(zhe)個位置預(yu)留通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)洞(dong)口是最佳的(de)(de)(de)(de)，所(suo)以說主脊(ji)式通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)能使(shi)通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)氣(qi)(qi)(qi)(qi)樓性能最大(da)(da)化(hua)。當然了，對于跨度較(jiao)大(da)(da)和(he)(he)數連跨的(de)(de)(de)(de)廠房(fang)，室(shi)(shi)(shi)內(nei)有較(jiao)多熱(re)源(yuan)和(he)(he)煙(yan)(yan)(yan)塵(chen)為了及時(shi)快速(su)排出熱(re)氣(qi)(qi)(qi)(qi)和(he)(he)煙(yan)(yan)(yan)塵(chen)，一般需要(yao)(yao)做(zuo)順坡(po)式縱向通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)。不過(guo)順坡(po)式通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)的(de)(de)(de)(de)侯口比主脊(ji)式氣(qi)(qi)(qi)(qi)樓要(yao)(yao)小。在(zai)實(shi)現通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)功能最大(da)(da)化(hua)的(de)(de)(de)(de)同時(shi)，還要(yao)(yao)對通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)的(de)(de)(de)(de)規格(ge)型(xing)(xing)號、材質材料、使(shi)用環境等進行(xing)綜合考(kao)量(liang)，即在(zai)一定(ding)時(shi)間內(nei)的(de)(de)(de)(de)通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)換氣(qi)(qi)(qi)(qi)量(liang)是決定(ding)通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)規格(ge)型(xing)(xing)號的(de)(de)(de)(de)關鍵。在(zai)這(zhe)一前提下，通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)預(yu)留洞(dong)口尺寸(cun)和(he)(he)通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)的(de)(de)(de)(de)外觀形狀及內(nei)部(bu)結構才能確定(ding)下來。現階(jie)段工業建筑在(zai)采(cai)用通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)型(xing)(xing)號規格(ge)方面一般由專業設(she)(she)計院進行(xing)甄選(xuan)設(she)(she)計，并(bing)有專業生產廠家進行(xing)天(tian)(tian)(tian)窗(chuang)(chuang)圖(tu)紙的(de)(de)(de)(de)二次深化(hua)，才能加工生產出合格(ge)的(de)(de)(de)(de)、有效的(de)(de)(de)(de)通(tong)(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)天(tian)(tian)(tian)窗(chuang)(chuang)產品(pin)。