内、外循环空气净化系统理论模型构建与性能对比分析  

Theoretical model and performance comparison of inner and outer circulation air purification system

作　　者：沈志鹏[1] 尚闽 王晋琳[1] 郑祥[1] 程荣[1] 

机构地区：[1]中国人民大学环境学院,北京100872

出　　处：《环境工程学报》2017年第8期4634-4640,共7页Chinese Journal of Environmental Engineering

基　　金：中央高校建设世界一流大学(学科)和特色发展引导专项资金资助项目

摘　　要：室内空气污染对人类健康的影响日益受到关注,目前空气净化系统作为室内空气污染最有效的控制方式,逐渐受到人们的青睐。针对市场上常见的空气净化器和新风净化机这2种空气净化系统,为探究2种系统净化方式的异同,分别构建了内循环、外循环净化理论模型,实际实验验证模型具有正确性。应用模型对影响两系统净化效果的因素进行分析,结果表明,相同条件下,空气净化器对PM_(2.5)去除效率高于新风净化机,且均随着风量、一次通过净化效率、时间的增大而升高,随着房间体积的增大而降低,新风净化机存在最佳建筑物换气次数。室外PM_(2.5)浓度不影响2种空气净化系统对PM_(2.5)的去除率,但随着室外浓度增大,室内PM_(2.5)剩余浓度升高。The effects of indoor air pollution on human health have caused increasing concern in recent years and generated high interest for air purification systems. In this study,the inner and outer circulation theoretical models were designed for indoor air purifiers and outdoor-air ventilators,respectively. The factors influencing the purifying effects of the two systems were analyzed. The results showed that the indoor air purifiers had a higher PM（2.5） removal rate than the outdoor-air ventilators under the same conditions. Both removal rates increased with air volume,primary purification efficiency,and time,and decreased with the volume of the room. The optimum building ventilation frequency was determined for outdoor-air ventilators. Outdoor PM（2.5） concentrations did not affect the PM（2.5） removal rate of the two air purification systems,but the residual concentration of indoor PM（2.5） increased with the outdoor PM（2.5） concentrations.

关 键 词：空气净化器 新风净化机 理论模型 PM2.5去除率 

分 类 号：X513[环境科学与工程—环境工程]