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Priority school building programme: an investigation into predicted occupant comfort during the heating season in naturally ventilated classrooms

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conference contribution
posted on 22.03.2016, 13:48 by Eftychia SpentzouEftychia Spentzou, C.R. Iddon, Matthew Grove, Malcolm CookMalcolm Cook
Natural ventilation solutions can provide sufficient outside air to maintain adequate indoor air quality (IAQ), which can improve occupants’ performance in classrooms and provide reductions in energy consumption for space conditioning. In this study, the effect of cool outside air and the vent opening configurations on IAQ and occupant thermal comfort in naturally ventilated classrooms during the heating season was examined. Dynamic and steady state computer simulations were performed to investigate the internal conditions of a naturally ventilated classroom, designed to meet the requirements of the Priority Schools Building Programme (PSBP) Output Specification. The modelled designs considered natural cross ventilation airflow through high-level top hung-out or bottom hung-in openings, and a stack (atrium). Dynamic thermal modelling results indicate that adequate IAQ and occupant thermal comfort could be achieved using natural ventilation. However, the CFD simulation results predicted occupant discomfort due to draughts in the regions close to the openings. Bottom hung-in vents reduced draught impact and the study also suggests moving occupants away from the draught zones to minimise the effect of discomfort draughts on occupant comfort. The air velocity and airflow patterns in the classrooms were influenced by the shape, size, location of internal openings, and the flowrate through the openings. This could be controlled by introduction of new openings with lower airflow rates through each opening.

History

School

  • Architecture, Building and Civil Engineering

Published in

CLIMA2016 12TH REHVA World Congress

Citation

SPENTZOU, E. ...et al., 2016. Priority school building programme: an investigation into predicted occupant comfort during the heating season in naturally ventilated classrooms. Presented at the 12TH REHVA World Congress (CLIMA2016), Aalborg, Denmark, May 22-25th.

Publisher

© The Authors. Published by REHVA

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

05/03/2016

Publication date

2016

Notes

This is a conference paper.

Language

en

Location

Aalborg, Denmark