CUED Publications database

A simplified mathematical approach for modelling stack ventilation in multi-compartment buildings

Acred, A and Hunt, GR (2014) A simplified mathematical approach for modelling stack ventilation in multi-compartment buildings. Building and Environment, 71. pp. 121-130. ISSN 0360-1323

Full text not available from this repository.

Abstract

A simple mathematical model of stack ventilation flows in multi-compartment buildings is developed with a view to providing an intuitive understanding of the physical processes governing the movement of air and heat through naturally ventilated buildings. Rules of thumb for preliminary design can be ascertained from a qualitative examination of the governing equations of flow, which elucidate the relationships between 'core' variables - flow rates, air temperatures, heat inputs and building geometry. The model is applied to an example three-storey office building with an inlet plenum and atrium. An examination of the governing equations of flow is used to predict the behaviour of steady flows and to provide a number of preliminary design suggestions. It is shown that control of ventilation flows must be shared between all ventilation openings within the building in order to minimise the disparity in flow rates between storeys, and ensure adequate fresh air supply rates for all occupants. © 2013 Elsevier Ltd.

Item Type: Article
Uncontrolled Keywords: Atrium Multi-storey buildings Multizone Natural ventilation Solar chimney Stack effect
Subjects: UNSPECIFIED
Divisions: Div A > Fluid Mechanics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:59
Last Modified: 08 Dec 2014 02:16
DOI: 10.1016/j.buildenv.2013.09.004