Assessing the performance of portable gas-phase air cleaners and implications for their use in buildings

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dc.contributor.authorXiang, Yiming
dc.contributor.authorAmada, Kanta
dc.contributor.authorMishra, Asit Kumar
dc.contributor.authorTanabe, Shin ichi
dc.contributor.authorFang, Lei
dc.contributor.authorWargocki, Pawel
dc.contributor.funderEnergy Technology Development and Demonstration Programme (EUDP) Denmark, 64018–0599
dc.contributor.funderBjarne Saxhofs Foundation (Denmark)
dc.contributor.funderHorizon 2020, 101034345
dc.date.accessioned2026-04-30T11:50:10Z
dc.date.available2026-04-30T11:50:10Z
dc.date.issued2025-11-01
dc.description.abstractWe examined the performance of two different brands of gas-phase air cleaners using Proton Transfer Reaction Time-of-Flight Mass Spectrometry (PTR-ToF-MS) measurements; both air cleaners used activated carbon filters. The measurements were made in a typical office with furnishing and two occupants. The air cleaners were examined under multiple airflow settings and with different numbers of active units. The distinct non-negligible 44 mass-to-charge ratio (m/z) signals for ions representing various organic compounds or their fragments were identified by PTR-ToF-MS. Operation of air cleaners consistently reduced the magnitude of twenty-two of them. We analysed the decay of the m/z signals to characterize the performance of air cleaners in terms of their pollutant removal effect. We observed that it was different for the different m/z signals, suggesting different removal efficiencies for various compounds or their fragments. Removal efficiency decreased with higher airflow rates through the air cleaners though the rate of clean air delivered by them was higher. Our results document that describing the performance of gas-phase air cleaners must include reporting of removal effects for different organic compounds along with the clean air delivery rate. Alternatively, target compounds can be identified and their removal efficiencies reported together with the air cleaning effect. The present work describes the methodological approach that can guide the revision of current practice and standards for evaluating the performance of gas-phase air cleaners. More studies using this methodological framework can lead towards greater adoption and use of gas-phase air cleaners in sustainable and healthy buildings.en
dc.description.sponsorshipBjarne Saxhofs Foundation (Denmark) and by The Energy Technology Development and Demonstration Program, EUDP (Denmark), grant number 64018–0599, which provided support to IEA Annex 78. European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant agreement no. 101034345.
dc.description.versionPublished Version
dc.format.extent14
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid116152
dc.identifier.authororcidXiang, Yiming
dc.identifier.authororcidAmada, Kanta
dc.identifier.authororcidMishra, Asit Kumar§0000-0001-6489-6895
dc.identifier.authororcidTanabe, Shin ichi
dc.identifier.authororcidFang, Lei
dc.identifier.authororcidWargocki, Pawel
dc.identifier.citationXiang, Y, Amada, K, Mishra, A K, Tanabe, S I, Fang, L & Wargocki, P 2025, 'Assessing the performance of portable gas-phase air cleaners and implications for their use in buildings', Energy and Buildings, vol. 346, 116152, pp. 1-14. https://doi.org/10.1016/j.enbuild.2025.116152
dc.identifier.doi10.1016/j.enbuild.2025.116152
dc.identifier.endpage14
dc.identifier.issn0378-7788
dc.identifier.journaltitleEnergy and Buildings
dc.identifier.otherORCID: /0000-0001-6489-6895/work/213415925
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/18714
dc.identifier.volume346
dc.language.isoen
dc.publisherElsevier B.V.
dc.relation.urihttps://www.scopus.com/pages/publications/105011095462
dc.rights© 2025, The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ ).
dc.rights.accessrightsopen access
dc.rights.licensenameAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.statusPeer reviewed
dc.subjectChemical analyses
dc.subjectGas-phase air cleaning
dc.subjectIndoor air quality
dc.subjectPTR-ToF-MS
dc.subjectVentilation
dc.subject[PublicHealth]
dc.titleAssessing the performance of portable gas-phase air cleaners and implications for their use in buildingsen
dc.typeArticle (peer-reviewed)
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