北京市住宅建筑新风系统使用行为的季节性分析

Seasonal Analysis of Usage Behavior of Fresh Air System At Residential Buildings in Beijing

本研究以北京市11户安装了新风系统的家庭为研究对象,通过季节性分析方法研究新风系统的使用行为,考虑不同季节对使用行为的影响。研究通过对新风系统的日均开启时长进行分析,得到冬季使用时间最长(18.42 h),春季次之,夏季最短(12.64 h)。其次,在同一季节中,不同家庭的日均开启时长存在明显差异,研究结合了每个季节居民在室内时间和室外PM_(2.5)污染水平下室内PM_(2.5)的达标率,建议居民在春、夏、秋季平均每天运行新风系统8 h,冬季运行12 h。不同季节的新风系统开启概率随影响因素的变化也有所不同,而全年变化趋势则趋近于某一季节,掩盖了居民在其它季节新风系统使用习惯上的不同。因此,季节性分析方法相比全年性分析方法更能明显反映出使用行为的差异性。此外,室外PM_(2.5)浓度是居民开启新风系统的主要驱动因素,二者呈正相关。本研究有望为住宅新风系统使用行为的数据分析和能耗模拟提供有价值的参考依据,为提高室内空气品质和节能提供理论指导。

This study examined 11 households in Beijing with fresh air systems installed,employing seasonal analysis to investigate usage patterns while considering the impact of different climatic conditions across seasons.Analysis of daily fresh air system operating duration revealed that the longest usage duration occurred in winter(18.42 h),followed by spring,with summer being the shortest(12.64 h).There was variability within the same season among households.The study analyzed the time spent indoors during each season and the indoor PM_(2.5) standard fulfillment rate under outdoor PM_(2.5) pollution,and recommended that,residents should operate the system eight hours per day in spring,summer,and autumn,and 12 hours in winter.The probability of system activation differed significantly with changing influencing factors in different seasons,while the annual trend tended to match that of a specific season,hiding the differences in using fresh air system in other seasons.Seasonal analysis methods were more effective in highlighting usage behavior differences.Furthermore,the study found a positive correlation between outdoor PM_(2.5) concentrations and residents’activation of the fresh air system,with the former being the main driver of the latter.This study provides valuable insights for data analysis and energy consumption modeling related to residential ventilation system usage behavior,and aims to guide efforts aimed at improving indoor air quality and energy efficiency.