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Wood stove combustion air retrofits: a low cost way to increase energy savings in dwellings
Danish Building Research Institute, Aalborg University, Copenhagen, Denmark; Centre for Environmental and Marine Studies, University of Aveiro, Campus Universitário de Santiago, Portugal. (Thermochemical Energy Conversion Laboratory)ORCID iD: 0000-0002-6521-4160
(Centre of Environment and Marine Studies (University of Aveiro))ORCID iD: 0000-0002-4279-3569
(Centre of Environment and Marine Studies (University of Aveiro))ORCID iD: 0000-0003-0385-5621
(Danish Building Research Institute)ORCID iD: 0000-0002-7112-6474
2018 (English)In: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 164, p. 140-152Article in journal (Refereed) Published
Abstract [en]

In Europe, wood-fired stoves remain as major renewable household heating and emission sources. This study focused on improving the performance of a wood stove (natural draft) traditionally used in Portugal by the adoption of alternative combustion air retrofits. Additionally, the performance of a new pellet stove (forced-air) was determined to investigate the highest achievable goal for solid-fuel stoves. In the wood stove, an outer chimney component was installed around the existing chimney to allow the vertical admission of outdoor air that was preheated before entering the combustion chamber. This measure increased the thermal efficiency of the wood stove from 62% to up to 79%. Another component was used to administrate secondary air to the wood stove reducing the carbon monoxide emissions by 39% to 2808 mg Nm−3. The two retrofits enhanced a more stable heat release from the wood stove, which reached a thermal efficiency 11% lower than that achieved by the pellet stove. This research suggests that retrofitting stoves with chimney components that allow the admission of combustion air can substantially increase energy savings in dwellings. Further efforts should focus on improving the interplay between the outdoor air and secondary air admission to achieve higher emission reductions at low-cost.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 164, p. 140-152
Keywords [en]
Wood stoves, chimney components, combustion air admission, energy performance, thermal efficiency, emission reductions
National Category
Energy Systems Environmental Management
Research subject
biology, Environmental Science
Identifiers
URN: urn:nbn:se:umu:diva-148315DOI: 10.1016/j.enbuild.2018.01.002ISI: 000428492700013OAI: oai:DiVA.org:umu-148315DiVA, id: diva2:1212658
Projects
AIRUSE – Testing and development of air quality mitigation measures in Southern Europe, LIFE 11 ENV/ES/000584Available from: 2018-06-03 Created: 2018-06-03 Last updated: 2018-11-23Bibliographically approved

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Carvalho, Ricardo

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Carvalho, RicardoVicente, EstelaTarelho, LuísJensen, Ole Michael
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