CUED Publications database

Natural ventilationwith gradually actuated vents

Hunt, GR and Allgayer, DM (2006) Natural ventilationwith gradually actuated vents. HB 2006 - Healthy Buildings: Creating a Healthy Indoor Environment for People, Proceedings, 4. pp. 263-268.

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Abstract

The transient natural ventilation of an enclosure through vents whose areas vary linearly with time is modelled theoretically. Both displacement and mixing flows are examined and analytical solutions developed. Predictions are presented for the ventilation of a typical office building and compared to existing constant vent area model predictions based on openings of the same average area. The predictions suggest that if the average vent areas are equal in the timedependent and constant area models, the overall time required to ventilate the enclosure is not affected. However, the rate at which heat is removed from the enclosure depends on the initial opening areas and the expansion rates/durations.

Item Type: Article
Uncontrolled Keywords: Actuated vents Buoyancy-driven flows Natural ventilation
Subjects: UNSPECIFIED
Divisions: Div A > Fluid Mechanics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:19
Last Modified: 08 Dec 2014 02:31
DOI: