本文選題：建筑外窗　切入點：氣密性　出處：《土木建筑與環(huán)境工程》2017年06期

【摘要】：采用壓差法測量了天津大學(xué)校園內(nèi)5種典型的常用建筑外窗的氣密性,這5種窗戶分別是PVC單層窗、PVC雙層窗、鋁合金平開窗、鋁合金推拉窗以及鋁合金上懸上懸窗,每類窗戶測量3組,測量壓差控制在0~60Pa之間。通過測量結(jié)果分析了窗框材料、開關(guān)窗形式、使用時間以及窗戶所處環(huán)境對窗戶氣密性的影響。最終,當壓差為5Pa時,前4種窗戶的漏風(fēng)量分布在10~20m3/h之間,而鋁合金上懸上懸窗的漏風(fēng)量則在35~40m3/h之間,漏風(fēng)量比較大。窗戶的滲漏系數(shù)C與窗戶氣密性存在較大關(guān)系,壓力指數(shù)n基本分布與0.5~0.6之間,受氣密性影響小。再根據(jù)標準GB/T 7106—2008計算了所測外窗的氣密性,通過計算,PVC雙層窗的氣密性最好,平均為5.17m3/h·m2;鋁合金上懸上懸窗的氣密性最差,平均為17.9m3/h·m2。通過對實驗的可重復(fù)性進行測量,發(fā)現(xiàn)經(jīng)過測量得出低壓段(≤10Pa)的漏風(fēng)量受環(huán)境影響較大,高壓段(≥15Pa)較小;每兩次重復(fù)性測試的時間間隔為1周,每兩組重復(fù)測量之間的誤差都小于15%,實驗可重復(fù)。
[Abstract]:The air tightness of five typical common building windows in Tianjin University was measured by pressure difference method. The five windows are PVC single layer window, aluminum alloy flat window, aluminum alloy sliding window and aluminum alloy overhanging window. The measurement pressure difference is controlled between 0~60Pa and three groups of window measurements. The effects of window frame material, window form, service time and window environment on window airtightness are analyzed through the measurement results. Finally, when the pressure difference is 5Pa, the effect of the pressure difference on the airtightness of the window is analyzed. The air leakage of the first four windows is between 10~20m3/h, while the air leakage of the aluminum alloy overhanging window is between 35~40m3/h and large. The leakage coefficient C of the window is closely related to the air tightness of the window, and the pressure index n is between 0.5 and 0.6. According to the standard GB/T 7106-2008, the air tightness of the outer window is calculated. The air tightness of the double layer window is the best, with an average of 5.17m3/h m2, and the air tightness of the aluminum alloy hanging window is the worst. The average is 17.9m3/h m2. By measuring the repeatability of the experiment, it is found that the air leakage in the low pressure section (鈮，

本文編號：1683384