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Fan Convectors vs. Bench heaters in Churches – impact on air velocities
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Building science - installation technology. (Indoor environment)ORCID iD: 0000-0002-0337-8004
Högskolan på Gotland, Institutionen för kultur, energi och miljö.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, BMG Laboratory. University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, BMG Laboratory.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, BMG Laboratory. University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, BMG Laboratory. University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, BMG Laboratory.
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2011 (English)In: EEHB 2011: Conference on Energy Efficiency in Historic Buildings / [ed] Tor Broström & Lisa Nilsen, Visby: Gotland University Press, 2011Conference paper, Published paper (Refereed)
Abstract [en]

Air movements in churches affect the deposition rate of airborne particles on surfaces, and hence influence soiling of valuable artifacts of different kinds. Sooting from candles and the thermal comfort of people is also affected by indoor air velocities. In an experimental field study, two different heating systems were compared regarding their effect on room air velocities in a church: air-to-air heat pumps with indoor fan convectors vs. a combination of bench heaters and radiators. Hot-sphere and 3-D sonic anemometers were used to record air velocities in the church. Strong buoyant air flows were found both in the supply air flow path of the heat pumps and above the bench heaters, but the air velocities were rather low outside of these air currents. A ~25 cm thick downdraught air flow was found along walls and windows, with a magnitude that was similar at both heating systems and much larger than the outdoor air infiltration rate.

Place, publisher, year, edition, pages
Visby: Gotland University Press, 2011.
Keywords [en]
Churches, Air velocities, Heating system, Heat pump, Surface soiling
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:hig:diva-8760ISBN: 978-91-86343-11-8 (print)OAI: oai:DiVA.org:hig-8760DiVA, id: diva2:414059
Conference
EEHB 2011 : Conference on Energy Efficiency in Historic Buildings. Visby. Sweden.
Projects
Church projectAvailable from: 2011-05-02 Created: 2011-05-02 Last updated: 2018-03-13Bibliographically approved

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Mattsson, MagnusLinden, ElisabetLindström, SvanteSandberg, Mats

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