Seasonal Analysis of Usage Behavior of Fresh Air System At Residential Buildings in Beijing
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 PM2.5 standard fulfillment rate under outdoor PM2.5 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 PM2.5 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.
residential buildingsfresh air systemusage behaviorinfluence factorsseasonal analysis
NETL
NSTL
万方数据
