佛山市建筑围护结构对空调冷负荷的影响分析

Analysis of the effect of building envelope on air conditioning cooling load in Foshan

根据佛山地区的气候和建筑特点,通过计算机模拟,分析了围护结构的各种热工参数及窗墙比对空调冷负荷的影响,认为减小窗墙比和加强外窗性能应是佛山市建筑节能的重点,而加强外窗性能的关键在于提高外窗的遮阳系数,且一般建筑应以南北朝向为宜。与采用目前普通围护结构材料相比,窗墙比0.5的公共建筑,如果按节能标准限值设计,其围护结构冷负荷可以减少50%左右。

According to the characteristics of weather and buildings in Foshan area, through computer simulation, analyses the effects of the thermal parameters of envelopes and window-wall ratio on air conditioning cooling load. Considers that reducing the window-wall ratio and enforcing the performance of exterior window should be taken as the keystones to energy conservation of buildings in Foshan, and the key to enforcing the performance of exterior window is to improve the shading coefficient. The building orientation should be facing the south/north. The envelope cooling load of public buildings with a windowwall ratio of 0.5, designed according to the energy efficient standard, can be reduced by 50% compared with that constructed with ordinary envelope materials.