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Challenges in developing a moisture metric to assess air change rates

Ahmed, J; Altamirano, H; Rovas, D; Mawditt, I; (2021) Challenges in developing a moisture metric to assess air change rates. In: (Proceedings) 1st International Conference on Moisture in Buildings 2021 (ICMB21). ScienceOpen (In press). Green open access

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Abstract

Air change rates are difficult to measure in naturally ventilated buildings. There is incentive to develop alternative techniques to measure air change rates. Using a moisture metric is a possibility, but this is challenging as it requires the ability to quantify processes that affect the moisture balance in a room. This paper consolidates literature about how the moisture balance can be understood in field studies in terms of moisture generation, moisture buffering, and ventilation. Moisture generation rates have been reported in literature with some disparity. Moisture buffering is difficult to account for due to the complexity of the process in real buildings. Ventilation can be measured using tracer gas techniques, but these often provide a ‘snapshot’ of the air change rate which varies both spatially and temporally in buildings. However, a promising approach has been identified whereby moisture and ventilation conditions are examined over a longer period of time i.e. weeks.

Type: Proceedings paper
Title: Challenges in developing a moisture metric to assess air change rates
Event: 1st International Conference on Moisture in Buildings 2021 (ICMB21)
Open access status: An open access version is available from UCL Discovery
DOI: 10.14293/icmb210003
Publisher version: http://doi.org/10.14293/icmb210003
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/10128424
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