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Primary energy implications of ventilation heat recovery in residential buildings
Mittuniversitetet, Institutionen för teknik och hållbar utveckling.ORCID-id: 0000-0002-5220-3454
Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för teknik, TEK. Mittuniversitetet, Institutionen för teknik och hållbar utveckling. (SBER)
Mittuniversitetet, Institutionen för teknik och hållbar utveckling. (SBER)
2011 (engelsk)Inngår i: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 43, nr 7, s. 1566-1572Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this study, we analyze the impact of ventilation heat recovery (VHR) on the operation primary energy use in residential buildings. We calculate the operation primary energy use of a case-study apartment building built to conventional and passive house standard, both with and without VHR, and using different end-use heating systems including electric resistance heating, bedrock heat pump and district heating based on combined heat and power (CHP) production. VHR increases the electrical energy used for ventilation and reduces the heat energy used for space heating. Significantly greater primary energy savings is achieved when VHR is used in resistance heated buildings than in district heated buildings. For district heated buildings the primary energy savings are small. VHR systems can give substantial final energy reduction, but the primary energy benefit depends strongly on the type of heat supply system, and also on the amount of electricity used for VHR and the airtightness of buildings. This study shows the importance of considering the interactions between heat supply systems and VHR systems to reduce primary energy use in buildings.

sted, utgiver, år, opplag, sider
2011. Vol. 43, nr 7, s. 1566-1572
Emneord [en]
Mechanical ventilation; Heat recovery; Heat supply systems; Electric resistance heating; Heat pump; District heating; CHP plant; Primary energy
HSV kategori
Forskningsprogram
Teknik, Byggteknik
Identifikatorer
URN: urn:nbn:se:lnu:diva-18946DOI: 10.1016/j.enbuild.2011.02.019ISI: 000292231600008Scopus ID: 2-s2.0-79956354126OAI: oai:DiVA.org:lnu-18946DiVA, id: diva2:528767
Tilgjengelig fra: 2012-05-28 Laget: 2012-05-28 Sist oppdatert: 2020-05-20bibliografisk kontrollert

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