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<p>消防排煙風(fēng)機通常是施工的主要防排煙系統，為了保證市民的生命安全和生活質(zhì)量，高層建筑需要安裝消防排煙風(fēng)機，由于部分規劃建設人員對防排煙系統的結構、功能和作用認識不足，對標準認識不充分，往往導致規劃建設中出現問(wèn)題。這里包頭通風(fēng)管道廠(chǎng)家就做一個(gè)簡(jiǎn)短的介紹。</p><p><br/></p><p>機械加壓送風(fēng)供給和防排煙系統所需的余壓難以產(chǎn)生，機械防排煙系統的排煙效果不明顯。出風(fēng)口風(fēng)量、余壓、排風(fēng)機風(fēng)量不符合標準要求的情況比較普遍，過(guò)程中的一些風(fēng)速幾乎為零，造成這種現象的原因比較復雜，特別是在以下幾個(gè)方面。</p><p><br/></p><p>排煙風(fēng)機選型錯誤，根據標準要求，經(jīng)核算確認防煙樓梯間及前室、公共前室及消防電梯間前室機械加壓送風(fēng)供應量，核算值與準則價(jià)值不一致的，以?xún)烧咧休^高者為準。</p><p><br/></p><p>有些方案直接按標準規定的值確定，往往導致所選風(fēng)機風(fēng)量、風(fēng)壓太小達不到要求；有些方案選擇通風(fēng)和機械排煙合用系統，但設計未按規劃要求選用雙速風(fēng)機；部分單位未按規劃風(fēng)機型號訂貨，購買(mǎi)性能標準較低的風(fēng)機，導致風(fēng)機風(fēng)量嚴重不足。</p><p><br/></p><p>多次設置抽油煙機機械加壓送風(fēng)體系和天然抽油煙機系統，建設一類(lèi)50米以上公共建筑和100米以上住宅建筑，應根據高標準的要求建立機械加壓送風(fēng)體系，部分工程在上述部位采用自然排煙，導致火災情況，當機械加壓送風(fēng)體系與自然排煙窗同時(shí)開(kāi)啟時(shí)，防煙樓梯間很難產(chǎn)生正壓，不能達到控煙目的。</p><p><br/></p> </div> <div id="pbrzjn3" class="prevNext"> <p class="prev"><上一條：<a 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