夜间通风在不同气候条件下的适用性

Applicability of night ventilation under different climatic conditions

近年来,夜间通风作为一种被动式降温手段受到越来越多的关注。为了研究夜间通风在中国不同气候条件下的节能效果,选取北京、上海、广州分别作为寒冷地区、夏热冬冷地区以及夏热冬暖地区的代表城市,使用建筑能耗模拟软件Energyplus建立一个办公建筑模型,分别在使用和未使用夜间通风的情况下计算出3个城市建筑在供冷季各月的供冷能耗和总能耗,通过对比,分析夜间通风的节能效果。研究结果表明,在相同的月份,夜间通风的效果会随着城市纬度的增加而增大,但对于整个供冷季,即便是在低纬度的夏热冬暖地区,夜间通风也具有显著的节能效果。

In the recent years,as a passive cooling method,night ventilation is getting more and more attention.To investigate the effectiveness of night ventilation under different climatic conditions in China,Beijing、Shanghai and Guangzhou were selected as the representatives of cold region、hot-summer and coldwinter region and hot-summer and warm-winter region respectively.The building energy simulation tool Energyplus was used to model an office building and calculate the cooling energy and total energy consumption of the building with and without night ventilation in the three cities.The energy-saving effect of night ventilation was analyzed by comparison.The results show that in the same month,the effectiveness of night ventilation is improved as the latitude is increased.For the whole cooling period,even if in hot-summer and warm-winter region,night ventilation can achieve distinct energy-saving effect.