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低辐射能玻璃窗的节能研究摘要 建立了低辐射能玻璃窗的物理传热模型,计算并分析反映窗户性能的两个参数:传热系数U和太阳得热系数SHGC,着重讨论了低辐射能玻璃窗的这两个参数的特点和影响因素,找出了其节能的机理。通过负荷模拟,研究了低辐射能窗户对空调能耗的影响,并在模拟结果的基础上,对我国4种典型气候下最适宜使用的低辐射能玻璃窗进行了分析。 关键词 低辐射能窗;低辐射;节能Abstract A model of heat transfer through low-E windows is developed. The two most important performance parameters-overall heat transfer coefficient (U value) and Solar Heat Gain Coefficient (SHGC) are calculated and analyzed. The factors that influence the two parameters of low-E windows are discussed and the mechanism of why low- E windows can save building energy is discussed. It also gives an example of the simulation of the impact of low-E windows on air-conditioning and heating energy cost in four typical climates in China. Based on the results of the simulation, the most eligible class of low-E windows is proposed for each climate for the best energy saving effect.
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