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Modelling the air cleaning performance of negative air ionisers in ventilated rooms

Noakes, C.J., Sleigh, P.A. and Beggs, C. (2007) Modelling the air cleaning performance of negative air ionisers in ventilated rooms. In: Proceedings of the 10th International Conference on Air Distribution in Rooms - Roomvent 2007. Roomvent 2007, 13-15 June 2007, Helsinki. , Helsinki . ISBN 978-952-99905-2-8

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Abstract

Negative air ionisers have seen increasing use as devices for improving indoor air quality, including some success in clinical environments for reducing the transmission of infection. This study uses a ventilation model and a CFD model to examine the physical effects of negative ionisers in indoor environments. The results demonstrate how the negative ion distribution and electric field due to an ioniser are influenced by both the room airflow and the ion generation rate. It is shown that ion concentrations greater than 1010 ions/m3 are necessary for the electrical effects to be significant. The effect on particles is also considered, with the results demonstrating that the ioniser will only increase the deposition of particles when the particle concentration is high enough to contribute to the space charge in the room.

Item Type: Proceedings Paper
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds)
The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds) > Inst for Pathogen Control Engineering (Leeds)
Depositing User: Ms Caroline Wilson
Date Deposited: 10 Feb 2009 18:07
Last Modified: 08 Feb 2013 17:06
Status: Published
URI: http://eprints.whiterose.ac.uk/id/eprint/7700

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