不同气候区中庭天窗性能对办公建筑能耗的影响

Impacts of atrium skylight performance on office building energy consumption in different climatic zones

以有中庭天窗的典型办公建筑为例,分析天窗面积比和工程中常用玻璃对不同气候分区中庭夏季太阳辐射得热、中庭空调冷热负荷及能耗、建筑能耗的影响。结果表明,天窗面积比和玻璃性能对中庭夏季太阳辐射得热、中庭空调冷热负荷及能耗的影响较大,而对整个建筑能耗的影响较小。与传热系数相比,遮阳系数对负荷、能耗的影响更大。建议设计时将天窗面积比控制在10%以下,同时应选择性能较好的玻璃,必要时应设置外遮阳。

Taking an office building with atrium skylight as an example, analyses the effect of area ratio of skylight to roof and behaviour of different types of glass commonly used on solar heat gain, cooling load, heating load and energy consumption of atria and energy consumption of buildings in different climatic zones in China. The results show that the effect of area ratio of skylight to roof and glass thermal performance on air conditioning load and energy consumption is more obvious for an atrium than for a whole building. Compared to that of the heat transfer coefficient, the effect of shading coefficient on air conditioning load and energy consumption is more notable. Suggests that the area ratio of skylight to roof should not be over 10 percent, choosing the glass with higher performance and using exterior shading if necessary.