南墙太阳能得热量关于室内外温度的回归分析

摘要

The heat transfer process of building envelope with solar radiation was simulated by employing numerical simulations and influences of the average temperature difference between indoor and outdoor and consecutive-sunny-days on the solar heat gain of building south walls were analyzed.The results show that if the average temperature difference between indoor and outdoor is lower and the days of consecutively sunshine are shorter,the daily practical absorption rate of solar radiation on the south walls will be higher.Finally,considering the factors of the average temperature difference between indoor and outdoor and consecutive-sunny-days,the regression equations of the daily practical absorption rate of solar radiation on the south walls are fitted by the fitting method.And thus it determines the daily practical absorption of solar radiation on the south walls and provides a theoretical basis for improving the precision of calculation on heat load.%采用数值模拟的方法对太阳辐射作用下建筑南墙的传热过程进行模拟,分析室内外平均温差和持续日照天数对南墙太阳能得热量的影响.结果表明,室内外平均温差越小,持续日照天数越少,南墙太阳能每日实际吸收率越大.最后采用拟合的方法得出南墙太阳能每日实际吸收率与室内外平均温差和持续日照天数的回归方程,从而确定墙体每日实际吸收的太阳能,为提高负荷计算精度提供了理论依据.