基于有限元分析的真空玻璃传热性能数值模拟研究

摘要/Abstract

摘要： 真空玻璃是具有优异保温、隔热、降噪性能的新型绿色建筑材料。本研究运用COMSOL Multiphysics 5.6软件建立了相关物理模型,探究不同规格真空玻璃的性能差异及不同玻璃在节能建筑中的应用情况。结果表明:500 mm×500 mm规格的真空玻璃的保温性能强于200 mm×200 mm及100 mm×100 mm规格的真空玻璃。随着真空玻璃规格的增大,真空腔体积变大,导致边缘密封层占整个真空玻璃表面面积百分比减小,边缘密封层的传热对真空玻璃的传热影响减少,真空玻璃的保温性能因而得到增强。节能建筑中使用真空玻璃替换普通平板玻璃和中空玻璃可以达到更好的节能效果。建筑物在冬季使用真空玻璃7 d时室内平均温度比使用平板玻璃高出3.91 K,比中空玻璃高出2.25 K。

关键词: 真空玻璃, 传热性能, 隔热, 保温, 节能建筑, 有限元模拟, COMSOL Multiphysics

Abstract: Vacuum glazing is a new type of green building material with great heat preservation, thermal insulation and noise reduction performance. COMSOL Multiphysics 5.6 was utilized to establish the physics models to explore the performance of vacuum glazing with different specifications and simulate the application of different glasses in energy-saving buildings in this study. The results show that the thermal insulation performance of vacuum glazing with size of 500 mm × 500 mm is better than that of 200 mm × 200 mm and 100 mm × 100 mm. With the size increasing, the area of the vacuum gap becomes larger, whereas the edge sealing layer occupies a smaller percentage of the surface area of the whole vacuum glazing. Therefore, the effect of the edge sealing layer on the heat transfer of the vacuum glazing is reduced, and the thermal insulation performance of vacuum glazing is enhanced. A better energy-saving effects can be achieved using vacuum glazing replacing ordinary flat glass and insulating glass in energy-saving buildings. The average indoor temperature of energy-saving buildings using vacuum glazing for 7 d in winter is 3.91 K higher than that of using flat glass, and 2.25 K higher than that of using insulating glass.

Key words: vacuum glazing, heat transfer performance, thermal insulation, heat preservation, energy-saving building, finite element analysis, COMSOL Multiphysics

中图分类号:

TQ171.1

李宏, 李璟玮, 陈鹏, 俞昊天, 熊德华. 基于有限元分析的真空玻璃传热性能数值模拟研究[J]. 硅酸盐通报, 2022, 41(4): 1148-1156.

LI Hong, LI Jingwei, CHEN Peng, YU Haotian, XIONG Dehua. Numerical Simulation of Heat Transfer Performance of Vacuum Glazing Based on Finite Element Analysis[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(4): 1148-1156.

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