重污染天气下教室内新风净化系统使用效果评价研究  

Evaluation of the fresh air purification system in the classroom under heavy pollution weather

作　　者：杜航 王彦文 崔亮亮[2] 方建龙[1] 孙庆华[1] 杜艳君[1] 张迎建 仲宇 黄子浩 张文静 彭秀苗[2] 张扬[2] 李湉湉[1] Du Hang;Wang Yanwen;Cui Liangliang;Fang Jianlong;Sun Qinghua;Du Yanjun;Zhang Yingjian;Zhong Yu;Huang Zihao;Zhang Wenjing;Peng Xiumiao;Zhang Yang;Li Tiantian(China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental′Health,Chinese Center for Disease Control and Prevention,Beijing 100021,China;Institute of Environmental Health,Jinan Municipal Center for Disease Control and Prevention,Jinan 250021,China)

机构地区：[1]中国疾病预防控制中心环境与人群健康重点实验室中国疾病预防控制中心环境与健康相关产品安全所,北京100021 [2]济南市疾病预防控制中心环境健康所,250021

出　　处：《中华预防医学杂志》2021年第8期995-998,共4页Chinese Journal of Preventive Medicine

基　　金：国家自然科学基金(41907367,41907368,21906156)。

摘　　要：于2019年12月9—10日,选取山东省济南市某小学教学楼三层的两个相同面积的教室作为研究现场,评估新风净化系统对室内PM_(2.5)水平的改善效果,探讨新风系统运行的最优时长,以及影响新风净化系统改善室内空气质量的主要因素。新风净化系统运行期间,教室内PM_(2.5)浓度相比室外PM_(2.5)浓度平均降低48.1%~61.5%。运行2 h左右,室内PM_(2.5)浓度降低至比较稳定的浓度水平。多重线性回归模型和混合效应模型结果均显示,新风净化系统运行时长、课间学生活动、室内温度、室内相对湿度以及室外PM_(2.5)浓度是影响室内颗粒物去除率的重要因素。在新风量和室内面积一定的情况下,关闭门窗,适当延长新风净化系统运行时间,一定程度上可以改善教室内空气质量水平,保障学生的身体健康。Evaluate the effect of the fresh air purification system on the improvement of indoor PM_(2.5) levels in a primary school classroom in Jinan City,Shandong Province.Our purpose is to explore the optimal operating time of the fresh air system and the main factors that affect the fresh air purification system to improve indoor air quality.From December 9,2019 to December 10,2019,two classrooms of the same area on the third floor of a primary school building in Jinan City,Shandong Province were selected as monitoring points.During the operation of the fresh air purification system,the PM_(2.5) concentration in the classroom is reduced by an average of 48.1%-61.5%compared to the outdoor PM_(2.5) concentration.After running for about 2 hours,the indoor PM_(2.5) concentration decreased to a relatively stable concentration level.The operating time of the fresh air purification system,student activities between classes,indoor temperature,indoor relative humidity,and outdoor PM_(2.5) concentration are important factors that affect the indoor particulate removal rate.In the case of a certain amount of fresh air and indoor area,closing doors and windows and appropriately extending the operation time of the fresh air purification system can improve the air quality in the classroom to a certain extent and protect the health of students.

关 键 词：颗粒物 空气污染 室内 净化 新风净化系统 I/O值 

分 类 号：X51[环境科学与工程—环境工程] TU834[建筑科学—供热、供燃气、通风及空调工程]