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dc.contributor.authorRøyset, Arne Karstein
dc.contributor.authorKolås, Tore
dc.contributor.authorJelle, Bjørn Petter
dc.date.accessioned2019-12-13T07:31:41Z
dc.date.available2019-12-13T07:31:41Z
dc.date.created2019-11-19T14:46:58Z
dc.date.issued2019
dc.identifier.citationEnergy and Buildings. 2019, 208 1-13.nb_NO
dc.identifier.issn0378-7788
dc.identifier.urihttp://hdl.handle.net/11250/2633049
dc.description.abstractBuilding integrated photovoltaics (BIPV) has attracted increased commercial interest in recent years due to a growing focus on efficient utilization of land area and local renewable energy generation. Aesthetic aspects must be considered when photovoltaic panels are applied as building elements. Colours can be added by reflecting some of the sunlight that otherwise could have been utilized for electricity generation. Reflectance spectra of commercial solar cell modules have been measured and analysed. Relative efficiency loss caused by the reflected solar radiation energy has been calculated. The calculated losses in efficiency based on measured spectra have been compared to model spectra with colour coordinates corresponding to RAL colours as well as more idealized monochromatic spectra. The analysis shows that the most important colour parameter affecting loss is the lightness. The second most important parameter is the hue of the colour, with green-yellow colours having the lowest loss, and pink colours resulting in the highest loss, when colours with the same lightness are compared. A Colour Performance Index (CPI) given by luminous reflectance divided by relative loss has been proposed as a figure of merit, thus allowing for a useful comparison of colours with different lightness.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleColoured Building Integrated Photovoltaics: Influence on Energy Efficiencynb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber1-13nb_NO
dc.source.volume208nb_NO
dc.source.journalEnergy and Buildingsnb_NO
dc.identifier.doi10.1016/j.enbuild.2019.109623
dc.identifier.cristin1749514
dc.relation.projectNorges forskningsråd: 257639nb_NO
dc.relation.projectNorges forskningsråd: 244031nb_NO
dc.description.localcode© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license. (http://creativecommons.org/licenses/by-nc-nd/4.0/)nb_NO
cristin.unitcode194,64,91,0
cristin.unitnameInstitutt for bygg- og miljøteknikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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