摘要
Abstract
To study the influence of night ventilation on energy consumption of ultra-low energy buildings in cold regions.Taking an office building in Liaoning province as an example,an analysis model was established based on DeST software to systematically analyze the changes of indoor temperature,cooling load and energy consumption of refrigeration system under different ventilation conditions.The results show that both room temperature and building cooling load decrease with the increase of ventilation times,and decrease with the increase of ventilation time.The best ventilation period in June is from 22:00 to 8:00 the next day,and the ventilation frequency is 6 times/h;The best ventilation period in July is from 22:00 to 7:00 the next day,and the ventilation frequency is 5 times/h;The best ventilation period in August is from 23:00 to 7:00 the next day,and the ventilation frequency is 7 times/h;The best ventilation period in September is from 22:00 to 8:00 the next day,and the ventilation frequency is 3 times/h;Under the optimal ventilation condition,the building energy saving rate in July was the smallest,which was 11.7%,and in September it was the largest,which was 37.5%.关键词
严寒地区/超低能耗建筑/夜间通风/能耗分析Key words
Cold region/Ultra-low energy consumption buildings/Night ventilation/Energy consumption analysis分类
建筑与水利
