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dc.contributor.authorBrastein, Ole Magnus
dc.contributor.authorPerera, Degurunnehalage Wathsala U.
dc.contributor.authorPfeiffer, Carlos Fernando
dc.contributor.authorSkeie, Nils-Olav
dc.identifier.citationEnergy and Buildings. 2018, 169, 58-68.nb_NO
dc.descriptionThis article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. This version is licensed under CC-BY-NC-ND.nb_NO
dc.description.abstractGood models for building thermal behaviour are an important part of developing building energy management systems that are capable of reducing energy consumption for space heating through model predictive control. A popular approach to modelling the temperature variations of buildings is grey-box models based on lumped parameter thermal networks. By creating simplified models and calibrating their parameters from measurement data, the resulting model is both accurate and shows good generalisation capabilities. Often, parameters of such models are assumed to be a combination of different physical attributes of the building, hence they have some physical interpretation. In this paper, we investigate the dispersion of parameter estimates by use of randomisation. We show that there is significant dispersion in the parameter estimates when using randomised initial conditions for a numerical optimisation algorithm. Further, we claim that in order to assign a physical interpretation to grey-box model parameters, we require the estimated parameters to converge independently of the initial conditions and different datasets. Despite the dispersion of estimated parameters, the prediction capability of calibrated grey-box models is demonstrated by validating the models on independent data. This shows that the models are usable in a model predictive control system.nb_NO
dc.description.abstractParameter estimation for grey-box models of building thermal behaviournb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.titleParameter estimation for grey-box models of building thermal behaviournb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.journalEnergy and Buildingsnb_NO
cristin.unitnameInstitutt for elektro, IT og kybernetikk

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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal