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Novel method for measuring induction rates

Ruponen, M. and Tinker, J.A. (2007) Novel method for measuring induction rates. In: Proceedings of the 10th International Conference on Air Distribution in Rooms. Roomvent 2007, June 13-15, 2007, Helsinki, Finland. REHVA , Helsinki, Finland . ISBN 978-952-99898-1-2

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Abstract

This paper introduces a new technique for measuring induction ratios for different nozzle and combined flow geometries. The measurement technique only requires a single point velocity measurement in the secondary air inflow and a static pressure measurement in the primary air chamber. The design if the device allows the induction ratio to be determined for different primary air nozzle arrangements with different geometries for combined air discharge outlets. Experimentally measured data is compared with theoretical values. Four different sized circular nozzles with different outlet geometries were used to supply primary air into the device. The outlet geometries consisted of circular, slot and a rectangular shape. The results showed that the outlet geometry has very little or no effect on the induction ratio. The most important parameter in the induction ratio is the area ratio of the nozzle and the outlet.

Item Type: Proceedings Paper
Copyright, Publisher and Additional Information:
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds)
Depositing User: Ms Caroline Wilson
Date Deposited: 17 Feb 2009 17:49
Last Modified: 08 Feb 2013 17:06
Status: Published
Publisher: REHVA
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/7819

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