Pressure distribution around the thermal envelope - a parametric study of the impact from wind and temperature on contaminant transport within a building
Paper in proceeding, 2020
In many cases, measures to improve the air quality are taken without a thorough understanding of how it might affect the pressure distribution in the building. In this paper a numerical model is used to examine how different climate scenarios and different building configurations affect the leakage and contaminant transport in a building with a crawl space.
Results show that for leaky buildings the ventilation rate increases with increased wind and therefore the contaminant concentration decreases. The worst scenario in terms of high contaminant concentration is mild days with little wind. Also, when installing an exhaust fan in the crawl space with the purpose to prevent air from leaking from the crawl space to the classroom it is advisable to also consider the airtightness and the climate, not only the pressure difference across the floor.
contaminant transport
building pressure
pressure distribution
Author
Fredrik Domhagen
Chalmers, Architecture and Civil Engineering, Building Technology
Paula Wahlgren
Chalmers, Architecture and Civil Engineering, Building Technology
Carl-Eric Hagentoft
Chalmers, Architecture and Civil Engineering, Building Technology
E3S Web of Conferences
25550403 (ISSN) 22671242 (eISSN)
Vol. 172 11004Tallin, Estonia,
How to improve the indoor air quality in schools with a focus on contaminant transport from the building envelope accounting for the interaction with the ventilation system
Formas (2015-1589), 2016-01-01 -- 2019-12-31.
Driving Forces
Sustainable development
Areas of Advance
Building Futures (2010-2018)
Health Engineering
Subject Categories
Environmental Analysis and Construction Information Technology
Other Civil Engineering
Building Technologies
DOI
10.1051/e3sconf/202017211004