摘要测定了九台工业除尘器的部分效率，包括三台筒式除尘器、四台袋式除尘器和两台静电除尘器。除尘器在实验室中受到了4%碳酸钙粉末的挑战。7米质量中值直径，在不同浓度水平下的几何标准偏差为1.9。最近开发的一种新型除尘和测量系统使用了实时光学粒子计数器，用于测量收集器的上游和下游粉尘浓度。使用“品质因数”质量因数对这些收集器的性能进行了比较。 在实验室测试条件下，筒式过滤器的性能最佳，收集效率超过99.999%。所有试验装置的下游质量浓度均低于NIOSH/OSHA的总质量限值10 mg/m3，呼吸质量限值5 mg/m3。这表明所有测试的装置都符合在理想实验室条件下以再循环模式运行的必要规范，并对类似的除尘器进行了现场测试。现场测试结果显示，由于运行参数、粉尘类型和维护方面的差异，差异较大。这表明在再循环应用中，使用二次过滤器和/或安装下游粉尘监测器是一种谨慎的措施。 引文:ASHRAE Transactions，第95卷，pt。1989年，温哥华

ABSTRACT. The fractional efficiencies of nine industrial dust collectors, including three cartridge filters, four baghouse filters, and two electrostatic precipitators, have been determined. The dust collectors were challenged in the laboratory by a calcium carbonate powder of 4. 7 ~m mass median diameter with a geometric standard deviation of 1.9 at various concentration levels. A recently developed novel sarnpling and measuring system involving the use of a real-time optical particle counter was used to mea= sure the upstream and downstream dust concentrations of the collectors. The performance of these collectors has been compared using a "figure of merit" quafity factor. Under laboratory test conditions, the cartridge filters gave the best performance, with collection efficiency exceeding 99.999%. The downstream mass concentrations for all the units tested were below the NIOSH/OSHA limits of 10 mg/m3for total mass and 5 mg/m3for respirable mass. This indicates that all units tested meet the necessary codes for operating at recirculating mode under ideal laboratory conditions° Field tests of similar dust collectors were performed. The field test results showed considerably more variation due to the difference in operating parameters, dust types, and maintenance. This suggests that the use of a secondary filter and/or installing a downstream dust rnonitor is a prudent measure in recirculation applications.