自然通风对办公室内气溶胶的影响

Effect of Natural Ventilation on Office Aerosol

办公室间歇开窗自然通风可降低室内颗粒物和微生物的浓度。用TIS公司的气溶胶自动分析仪和FA-1型空气微生物采样器对样品测定结果表明,上午9:00室外大气颗粒物浓度高于室内,不宜开窗;10:30左右,室内颗粒物浓度增高,开窗自然通风效果好。自然通风能有效降低室内存在颗粒物散发量较大的污染源引起的颗粒物浓度和室内微生物浓度。需要注意的是自然通风的气流组织,以避免气流扰动而引起室内扬尘。

Intermittent natural ventilation in office could reduce the concentration of particulate matter and microbe. Taking aerosol automatic analyser of TST company and air microbe sampler of FA-1 type to determine the sample. The result showed that at 9:00am, concentration of air particulate matter outdoor was higher than indoor, not fit for open window, at 10:30 concentration of particulate matter increased, it is effective to open the window. Natural ventilation could effectively reduce indoor pollution sources which emitting particulate matter and microbe. But attention should be paid for organizing natural ventilation air flow for avoiding air flow disturbing in order to cause indoor fly ash.