Particle concentrations and sizes in an air-conditioned office with normal efficiency air filtration of University
the indoor and outdoor particle number concentrations of different size ranges (0.3-0.5μm, 0.5-1.0μm, 1.0-3.0μm, 3.0-5.0μm, and ≥10.0μm) were measured in an airconditioned office without tobacco smoking and fresh air. The total mass efficiency of the normal filter installed in the air handing system was measured and calculated to below the 9%, which is much smaller than the efficiency of the filters specified by ASHRAE. Experiments further revealed that the larger particles have the higher filtration efficiency, so the ratios of the concentration of the indoor to outdoor (I/O) decreased with the particles increased. And for the ranges of particle size measured (> 0.3 μm), the indoor particle number concentrations were considerably less than that in outdoor. But for the ratios of I/O, there is a sharp down before the 2.0μm and then a slightly decline.
Yuesheng Fan Pengfei Si Angui Li Bao Bai Xiangwei Zhao
Post-doctoral mobile research station of CivilEngineeringXi’an Univ.of Arch.& Tech.Xi’an 710055,Chin School of Envir.and Muni.Eng.Xi’an Univ.of Arch.& Tech.Xi’an 710055,China
国际会议
成都
英文
1-3
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）