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Life cycle assessment of wood pellets and wood split logs for residential heating.
Quinteiro, Paula; Tarelho, Luís; Marques, Pedro; Martín-Gamboa, Mario; Freire, Fausto; Arroja, Luís; Dias, Ana Cláudia.
Afiliação
  • Quinteiro P; Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal. Electronic address: p.sofia@ua.pt.
  • Tarelho L; Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
  • Marques P; ADAI-LAETA Department of Mechanical Engineering, University of Coimbra, 3030-788 Coimbra, Portugal.
  • Martín-Gamboa M; Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
  • Freire F; ADAI-LAETA Department of Mechanical Engineering, University of Coimbra, 3030-788 Coimbra, Portugal.
  • Arroja L; Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
  • Dias AC; Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
Sci Total Environ ; 689: 580-589, 2019 Nov 01.
Article em En | MEDLINE | ID: mdl-31279204
ABSTRACT
Wood-fuelled systems are commonly used all over the world for residential heating, and recently wood pellets have been replacing traditional firewood. This article presents an environmental life cycle assessment of five wood-based combustion systems for residential heating i) a pellet stove using maritime pine pellets; a wood stove using ii) eucalyptus (Eucalyptus globulus Labill.) and iii) maritime pine (Pinus pinaster Ait.) split logs; and a fireplace using iv) eucalyptus and v) maritime pine split logs. The functional unit is 1 MJ of thermal energy for residential heating. System boundaries include four stages (1) forest management; (2) pellet and wood split log production; (3) distribution; and (4) thermal energy generation. Environmental impacts were calculated for seven impact categories from the ReCiPe 2016 midpoint method, and a sensitivity analysis was performed using the Product Environmental Footprint (PEF) life cycle impact assessment method and modifying the distances travelled. Of the five heating systems analysed, the fireplace presents the worst performance for all the impact categories with the exception of freshwater eutrophication and marine eutrophication, when maritime pine split logs are burned in the fireplace. Comparing the pellet stove with the wood stove, neither system is better for all the impact categories analysed. Regarding sensitivity analysis, the use of an alternative characterisation method leads to similar trends in the results in comparison with those obtained from the ReCiPe method, while changes in transport distances do not affect the total impacts to a large extent.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: Sci Total Environ Ano de publicação: 2019 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: Sci Total Environ Ano de publicação: 2019 Tipo de documento: Article