【摘要】 介绍了带遮阳百叶的热通道玻璃幕墙的简单数学模型。该幕墙由外侧单层玻璃幕墙和内侧中空玻璃幕墙组成热通道,通道中内置遮阳百叶以减少太阳能透射得热。在夏热地区,空气在通道中被太阳辐射加热,处于自然通风状态之下。列出了稳态条件下系统的热平衡方程,通过线性矩阵求解了太阳辐射和外界环境温度分别改变时,两个玻璃和通道内两个空气层及百叶的平均温度。计算模拟表明,内置遮阳百叶的热通道幕墙的内层中空玻璃的外表面温度较传统单层幕墙的表面温度有明显降低;与无遮阳百叶的热通道幕墙相比,室内透射得热量有很大减少,传热系数也比中空玻璃和无遮阳百叶的热通道幕墙有显著降低。更多还原

【Abstract】 A simple mathematical model of thermal channel(double skin facades) glazing curtain wall with shading louver was proposed in this paper.Lateral single glass covers and median hollow glass form a channel with which the heated air could raise and flow by natural ventilation.Blinds are fixed in the cavity of the double skin facades which decrease the solar heats in hot summer zone.Steady heat transfer equations which were solved using a matrix-inversion solution procedure were set up to determine the boundary temperature at two glass cover and air average temperature and blind temperature in channel.Using a thermal network chart express the channel transferring procession.Satisfying data were obtained and the results indicated in summer double skin facades could cut down the temperature of curtain wall cover and lower gaining load by way of solar radiation.Compared with no fixing builds curtain,the curtain could notably lower transfer coefficient.更多还原