住宅新风系统过滤器内微生物污染水平与影响因素  

Microbial contamination levels and influencing factors in filters for residential outdoor air systems

作　　者：李艳菊[1] 张雅冰 王宇[1] Li Yanju;Zhang Yabing;Wang Yu(Tianjin University of Chengjian,Tianjin)

机构地区：[1]天津城建大学,天津

出　　处：《暖通空调》2025年第3期105-110,共6页Heating Ventilating & Air Conditioning

基　　金：天津市科技计划项目(编号:19YFZCSN01120)。

摘　　要：选取寒冷地区不同居住建筑的4个新风系统,对其粗效、中效、高中效过滤器内的细菌和真菌污染水平进行了检测,分析了温湿度、空气质量指数(AQI)对过滤器内细菌和真菌浓度的影响,对室外微生物浓度与空气中污染因子建立了回归模型。结果显示:粗效过滤器内微生物浓度范围为10^(4)~10^(10)CFU/m^(3);中效和高中效过滤器内细菌浓度范围为10^(2)~10^(7)CFU/m^(3),真菌浓度范围为10^(-1)~10^(6)CFU/m^(3);过滤器内微生物浓度与温湿度、空气质量指数呈正相关性;室外微生物浓度与NO_(2)、O_(3)、SO_(2)浓度均呈正相关性,O3浓度影响最大;被测试过滤器中主要存在的真菌有曲霉属、青霉属等。In this paper,four outdoor air systems of different residential buildings in cold zone are selected to detect the bacterial and fungal contamination levels in their primary,medium,and high and medium efficiency filters.The effects of temperature,humidity,and air quality index(AQI)on the bacterial and fungal concentration in the filters are analysed.A regression model is established between outdoor microbial concentrations and air pollution factors.The results show that the microbial concentration in the primary efficiency filter ranges from 10^(4) to 10^(10) CFU/m^(3).The bacterial concentration in the medium and high and medium efficiency filters ranges from 10^(2) to 10^(7) CFU/m^(3),and the fungal concentration ranges from 10^(-1) to 10^(6) CFU/m^(3).The microbial concentration in the filters is positively correlated with temperature,humidity,and air quality index.The outdoor microbial concentration is positively correlated with the concentrations of NO_(2),O_(3),and SO_(2),and the impact of O_(3) concentration is the greatest.The main fungi existing in the tested filter include Aspergillus,Penicillium,etc.

关 键 词：新风系统 过滤器 微生物污染 细菌 真菌 浓度 空气质量指数 影响因素 

分 类 号：X51[环境科学与工程—环境工程] TU83[建筑科学—供热、供燃气、通风及空调工程]