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Air ion behavior in ventilated rooms

Fletcher, L.A., Noakes, C.J., Sleigh, P.A., Beggs, C.B. and Shepherd, S.J. (2008) Air ion behavior in ventilated rooms. Indoor and Built Environment, 17 (2). pp. 173-182. ISSN 1420-326X

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Air ionizers have seen increasing use as devices for improving indoor air quality, including applications designed to reduce the transmission of infection in healthcare environments. However, little attention has been given to understanding and quantifying the physical behavior of ions in indoor air. This study presents experimental data and a theoretical model to examine the factors that influence the concentration of ions in a ventilated room. The results demonstrate how, with an ionizer in operation, the ion concentration is governed by ion—ion interactions and electrical deposition at the walls, with the ventilation rate having a minimal influence. The results also demonstrate that an ion concentration > 1010 ions · m x3 is necessary for these electrical effects to be significant, which has implications for the suitability of an ionizer for a particular location.

Item Type: Article
Copyright, Publisher and Additional Information: Copyright © 2008 by International Society of the Built Environment. This is an author produced version of a paper published in 'Indoor and Built Environment'. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Negative, Air ionizer, Ventilation, Electrical deposition, Indoor Air
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds) > Inst for Pathogen Control Engineering (Leeds)
The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds)
Depositing User: Ms Caroline Wilson
Date Deposited: 16 Feb 2009 18:29
Last Modified: 15 Sep 2014 01:56
Published Version: http://dx.doi.org/10.1177/1420326X08089622
Status: Published
Publisher: SAGE Publications
Refereed: Yes
Identification Number: 10.1177/1420326X08089622
URI: http://eprints.whiterose.ac.uk/id/eprint/7785

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