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首页> 外文会议>9th International Conference on Indoor Air Quality and Climate Vol.2, Jun 30-Jul 5, 2002, Monterey, California >FILTER EFFICIENCY OF SELECTED HVAC FILTERS
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FILTER EFFICIENCY OF SELECTED HVAC FILTERS

机译：选定的HVAC过滤器的过滤效率

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摘要

Air quality begins with good engineering air handling system (HVAC) controls. Air handler filters should remove the major particulate matter from incoming ambient air. A study of various NIOSH air handler bag filters was conducted to determine their filter efficiency against submicrometer particles (0.03-0.4 micrometers), since submicrometer particles are the most penetrating. Aerosol penetration measurements show an extremely large range of filter efficiency. New filter aerosol penetration ranged from less than one percent to greater than ten percent with penetration depending on flow rate, media surface area, and challenge agent particle size and state (liquid versus solid). Exposed filters (from air handler) showed a significant increase in submicrometer particle filter penetration and a shift in most penetrating aerosol particle size toward the larger particle size range. Both mechanical and electrostatic filters are used in HVAC applications. The electrostatic filters showed significant filter efficiency reduction over the filter's expected service lifetime.
机译：空气质量始于良好的工程空气处理系统（HVAC）控制。空气处理机过滤器应清除进入的周围空气中的主要颗粒物。由于亚微米颗粒的渗透性最强，因此对各种NIOSH空气处理袋式过滤器进行了研究，以确定它们对亚微米颗粒（0.03-0.4微米）的过滤效率。气溶胶渗透率测量显示出很大的过滤器效率范围。新的过滤器气溶胶渗透率范围从小于1％到大于10％，渗透率取决于流速，介质表面积以及挑战剂的粒径和状态（液体与固体）。暴露的过滤器（来自空气处理机）显示出亚微米级颗粒过滤器的渗透率显着增加，并且大多数穿透性气溶胶粒径向更大的粒径范围转移。机械和静电过滤器均用于HVAC应用。在过滤器的预期使用寿命内，静电过滤器的过滤效率明显降低。

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