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            暖通空調雜志社>期刊目次>2021年>第6期

            新風量對室內空氣微生物污染控制的影響研究

            Influence of outdoor air rate on indoor air microbial contamination control

            于丹[1] 許博文[1] 蔡志斌[2] 吳 璇[3]
            [1]北京建筑大學 [2]北京城建房地產開發有限公司 [3]北京建筑大學

            摘要:

            對設置新風系統的實際工程進行測試,考察了新風系統對室內空氣微生物的控制效果,并模擬了新風量對室內空氣微生物污染的影響。測試結果顯示,開啟新風系統1.5~2.0 h后,教室室內空氣中細菌濃度平均降低82.10%,真菌濃度平均降低86.64%。模擬結果顯示,隨著房間新風量的增大,房間內污染源、排風口及墻壁處氣溶膠污染狀況均得到明顯改善,人們工作區域的氣溶膠顆粒平均濃度由396 cfu/m3降低到109 cfu/m3,均為清潔水平,可見新風系統對室內氣溶膠顆粒的處理效果較好。

            關鍵詞:微生物污染,新風量,新風系統,控制效果,污染物分布

            Abstract:

            Tests the actual project of setting up outdoor air systems, investigates the control effect of outdoor air system on indoor air microorganism, and simulates the influence of outdoor air rate on indoor air microbial contamination. The test results show that, after the outdoor air system runs for 1.5 h to 2.0 h, the average concentration of bacteria and fungi in the indoor air decreases by 82.10% and 86.64%, respectively. The simulation results show that, with the increase of outdoor air rate, the aerosol pollution in the pollution source, the exhaust outlet and the wall of the room obviously decreases, and the average concentration of aerosol particles in people’s working areas decreases from 396 cfu/m3 to 109 cfu/m3, all at clean levels. Indicates that the outdoor air system has a better treatment effect on indoor aerosol particles.

            Keywords:microbialcontamination,outdoorairrate,outdoorairsystem,controleffect,pollutantdistribution

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