围合式建筑布局形式冬季的附加节能效应

Additional Energy-Saving Effect of an Enclosed Building in Winter

相对于行列式建筑布局形式,围合式建筑内部庭院空间的空气环境受外界环境影响较小,建筑物附近局部空间的空气温度介于大气与室内空气之间并且气流速度较小,这将使得供暖建筑的热损失减小,从而产生相应的附加节能效应.通过对全围合建筑内部庭院空气温度进行实测,分析了其温度分布特征,利用数值模拟计算方法给出了不同围合程度建筑布局的附加节能效率,实测和模拟结果均显示了围合式布局可能带来的附加节能效果.

Compared with the layouts of an isolated building or a regularly aligned building cluster, the air environment in the courtyard of an enclosed building or building block is less affected by the external environment, the local temperature in the internal space is between the atmosphere and indoor air temperatures, and the flow velocity in the space is relatively low, thus reduce the heat loss of enclosed buildings, resulting in an additional energy-saving benefit. The variation of air temperature in the courtyard was monitored continuously in an enclosed building during the typical time periods of winter and summer, respectively. The temperature distribution feature in the space of the enclosed building was analyzed and the additional energy-saving efficiencies of different enclosed levels of building layouts were discussed by numerical simulation. Both of the test data and the numerical results show that enclosed layouts would result in the additional effect of building energy-saving.