Measurement and Analysis of PM2.5 in Passive Residential Building during Winter in Severe Cold Region
Mechanical ventilation system is a-dopted in a passive residential building in severe cold area,resulting in high air tightness in the building.In order to gain a deeper understanding of the indoor par-ticulate matter concentration level,intermittent field tests were conducted on the PM2.5 mass concentration of 8 households in the passive residential building in winter,and continuous field tests were conducted on the PM2.5 mass concentration of 2 typical households.The results show that in households without obvious particulate matter sources indoors,the indoor PM2.5 pollution level is mainly affected by outdoor PM2.5,and the correlation coefficient between indoor and out-door PM2.5 mass concentration is greater than 0.78.When indoor personnel cook or smoke,the correlation between indoor and outdoor PM2.5 mass concentration is very weak,and the I/O ratio of PM2.5 mass concen-tration in the living room and kitchen is greater than 4.The indoor PM2.5 mass concentration in the passive residential building is lower than that in ordinary ener-gy-saving buildings.
passive residential buildingfine particulate matterwintersevere cold region
万方数据
维普
