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Measured and predicted energy use and indoor climate before and after a major renovation of an apartment building in Sweden
Division of Energy Systems, Department of Management and Engineering, Linköping University, Linköping, Sweden.
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för bygg- energi- och miljöteknik, Energisystem. Division of Energy Systems, Department of Management and Engineering, Linköping University, Linköping, Sweden.ORCID-id: 0000-0003-3472-4210
Division of Energy Systems, Department of Management and Engineering, Linköping University, Linköping, Sweden.
2017 (engelsk)Inngår i: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 146, s. 98-110Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This article presents a case study of a renovated Swedish apartment building with a common design built in 1961. The aim is to present numerical predictions, validation and evaluation of energy use and indoor climate for the building before and after renovation. Comprehensive field measurements were carried out before and after the renovation to be used as input data in the building energy simulation tool IDA ICE and for validation of model results. Indoor temperature is predicted with maximum standard deviation of 0.4 °C during winter. Annual heat demand is in good agreement with measurements. The building had an annual climate normalized district heat demand of 99.0 MWh before renovation and 55.4 MWh after, resulting in a 44% reduction. A slight under-prediction of the saving potential is noted, since the indoor air temperature has increased after the renovation. The results also show that assumptions of user behavior have significant impact on the energy-saving potential, and that choice of renovation measures, such as level of insulation, and efficiency of the ventilation heat recovery system need careful consideration. Choice of system boundaries also has a major effect on climate and resource impact from selected renovation measures. 

sted, utgiver, år, opplag, sider
Elsevier Ltd , 2017. Vol. 146, s. 98-110
Emneord [en]
Building energy simulation, C02 emissions, Energy use, Field measurements, Multi-family buildings, Primary energy, Renovation, Validation, Apartment houses, Behavioral research, Energy conservation, Waste heat, Waste heat utilization, Building energy simulations, Field measurement, Primary energies, Buildings
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Identifikatorer
URN: urn:nbn:se:hig:diva-24319DOI: 10.1016/j.enbuild.2017.04.042ISI: 000403122200010Scopus ID: 2-s2.0-85018265523OAI: oai:DiVA.org:hig-24319DiVA, id: diva2:1110901
Forskningsfinansiär
Swedish Research Council FormasTilgjengelig fra: 2017-06-16 Laget: 2017-06-16 Sist oppdatert: 2018-03-13bibliografisk kontrollert

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