A novel method for determining air infiltration for mechanically ventilated buildings is presented in this paper. It consists of a model that uses size-resolved particle concentrations of the outdoor, filtered supply, and exhaust air as input. Based on these continuously measured concentrations, the infiltration rate can be inferred by fitting the experimentally obtained indoor concentrations with theoretically calculated values. The approach was validated by continuous long-term field measurements made over a four-month period. The results show that infiltration rates could be reliably estimated using this method and that the calculated infiltration rates were clearly dependent on the wind speed.
Bibliographical noteFunding Information: Funding was provided by two projects belonging to the European Union’s Seventh Framework Programme: EDEN (End-user driven Demo for cbrNe), Grant Agreement ID: 313077, and PANDHUB (Prevention and Management of High Threat Pathogen Incidents in Transport Hubs), Grant Agreement ID: 607433.
Open Access: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.
Publisher copyright: © 2019 The Author(s). Published with license by Taylor & Francis Group, LLC.
Citation: Kulmala, Ilpo, et al. "A novel method for determining infiltration of mechanically ventilated buildings." Science and Technology for the Built Environment 26.2 (2020): 250-256.