Whole House Particle Removal and Clean Air Delivery Rates for In-Duct and Portable Ventilation Systems
Whole House Particle Removal and Clean Air Delivery Rates for In-Duct and Portable Ventilation Systems
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DOI：
10.3155/1047-3289.58.11.1474
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发表时间：
2008-11-01
影响因子：
2.7
通讯作者：
Spengler, John D.
中科院分区：
文献类型：
--
作者：
Macintosh, David L.;Myatt, Theodore A.;Spengler, John D.
描述了一种用于确定整个房屋颗粒去除和归因于中央和便携式通风/空气净化系统的清洁空气输送率的新方法。该方法用于表征四个风管空气净化器和两个便携式空气净化器在全仪器化测试家中运行期间的总颗粒去除率和空气净化器特定颗粒去除率。在没有操作中央风扇或室内空气净化器的情况下，操作管道和便携式空气净化器通常会增加颗粒去除率。在5英寸管道作业期间，对0.3 ~ 0.5 μ m颗粒的去除率为1.5小时（-1）。与没有过滤器的空气处理机运行时的基准速度0小时（-1）相比，管道静电空气净化器的折叠介质过滤速度为7.2小时（-1）。空气动力学直径小于2.5 μ m的总颗粒物（PM2.5）质量浓度的去除率在基线条件下为0.5小时（-1），在三个便携式离子空气净化器运行时为0.5小时（-1），在管道1-in时为1小时（-1）。介质过滤器，2.4小时（-1）为单个高效微粒捕获（HEPA）便携式空气净化器，4.6小时（-1）为一个管内5英寸。介质过滤器，在五个便携式HEPA过滤器运行期间，4.7小时（-1），6.1小时（-1）用于传统的管道内电子空气净化器，7.5小时（-1）用于高效的管道内静电空气净化器。与中央通风系统内的损失无关，空气净化器对PM2.5的相应全屋洁净空气输送率从传统介质过滤器的2 m(3)/min到高效导风静电装置的32 m(3)/min不等。除了便携式离子空气净化器外，这里考虑的设备在室内比基线沉积率增加了颗粒去除。
A novel method for determining whole house particle removal and clean air delivery rates attributable to central and portable ventilation/air cleaning systems is described. The method is used to characterize total and air-cleaner-specific particle removal rates during operation of four in-duct air cleaners and two portable air-cleaning devices in a fully instrumented test home. Operation of in-duct and portable air cleaners typically increased particle removal rates over the baseline rates determined in the absence of operating a central fan or an indoor air cleaner. Removal rates of 0.3- to 0.5-mu m particles ranged from 1.5 hr(-1) during operation of an in-duct, 5-in. pleated media filter to 7.2 hr(-1) for an in-duct electrostatic air cleaner in comparison to a baseline rate of 0 hr(-1) when the air handler was operating without a filter. Removal rates for total particulate matter less than 2.5 mu m in aerodynamic diameter (PM2.5) mass concentrations were 0.5 hr(-1) under baseline conditions, 0.5 hr(-1) during operation of three portable ionic air cleaners, 1 hr(-1) for an in-duct 1-in. media filter, 2.4 hr(-1) for a single high-efficiency particle arrestance (HEPA) portable air cleaner, 4.6 hr(-1) for an in-duct 5-in. media filter, 4.7 hr(-1) during operation of five portable HEPA filters, 6.1 hr(-1) for a conventional in-duct electronic air cleaner, and 7.5 hr(-1) for a high efficiency in-duct electrostatic air cleaner. Corresponding whole house clean air delivery rates for PM2.5 attributable to the air cleaner independent of losses within the central ventilation system ranged from 2 m(3)/min for the conventional media filter to 32 m(3)/min for the high efficiency in-duct electrostatic device. Except for the portable ionic air cleaner, the devices considered here increased particle removal indoors over baseline deposition rates.