Air Particle Measurement

This digital document is an article from Journal of the Air & Waste Management Association, published by Air and Waste Management Association on August 1, 2010. The length of the article is 7235 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.Citation DetailsTitle: An analysis of field-aged diesel particulate filter performance: particle emissions before, during, and after regeneration.(TECHNICAL PAPER)(Report)Author: Teresa L. BaronePublication: Journal of the Air & Waste Management Association (Magazine/Journal)Date: August 1, 2010Publisher: Air and Waste Management AssociationVolume: 60 Issue: 8 Page: 968(9)Article Type: ReportDistributed by Gale, a part of Cengage Learning

Published on: 2010-08-01 Released on: 2010-09-14 Format: HTML Binding: Digital 25 pages

Excerpt. © Reprinted by permission. All rights reserved. ABSTRACT A field-aged, passive diesel particulate filter (DPF) used in a school bus retrofit program was evaluated for emissions of particle mass and number concentration before, during, and after regeneration. For the particle mass measurements, filter samples were collected for gravimetric analysis with a partial flow sampling system, which sampled proportionally to the exhaust flow. A condensation particle counter and scanning mobility particle sizer measured total number concentration and number-size distributions, respectively. The results of the evaluation show that the number concentration emissions decreased as the DPF became loaded with soot. However, after soot removal by regeneration, the number concentration emissions were approximately 20 times greater, which suggests the importance of the soot layer in helping to trap particles...

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