严寒地区SiO2气凝胶玻璃窗传热分析

Heat Transfer Analysis Of SiO2 Aerogel Glass Window In Severe Cold Area

中文关键词: 二氧化硅气凝胶  中空玻璃  传热特性  建筑能耗

英文关键词: silica aerogel  hollow glass window  heat transfer performance  energy consumption

中文摘要:

      建立了二氧化硅（SiO2）气凝胶中空玻璃窗传热数值模型，采用有限体积法分析了二氧化硅气凝胶厚度和位置对严寒地区玻璃窗传热的影响。结果表明：二氧化硅气凝胶厚度增加，能够提高玻璃窗内表面温度，降低其热流密度。二氧化硅气凝胶厚度为20 mm时，玻璃窗内表面热流密度为67.5W·m-2。二氧化硅气凝胶位于室内侧能够更有效地减少建筑能耗，其总能耗为60120 W。

英文摘要:

      A numerical model for heat transfer of silica aerogel coupled hollow glass triple glazing was established. The effects of thickness and position of silica aerogel on heat transfer of glass windows in severe cold area were analyzed by finite volume method.The results showed that the surface temperature increased and the heat flow density decreased with the rise of the thickness of silica aerogel. When the thickness of silica aerogel is 20 mm, the heat flow density of the inner surface of the glass window is 67.5 W•m-2. Silica aerogel located on the inside of the room could more effectively reduce building energy consumption, and the total energy consumption was 60120 W.