Comparison of the diffuse fraction of daily and monthly global radiation for Izmir, Turkey

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dc.contributor.authorUlgen, K
dc.contributor.authorHepbasli, A
dc.date.accessioned2019-10-27T18:39:06Z
dc.date.available2019-10-27T18:39:06Z
dc.date.issued2003
dc.departmentEge Üniversitesien_US
dc.description.abstractIn this study, empirical correlations were developed to establish a relationship between the daily diffuse fraction (K-d) and the daily clearness index (K-T) for the city of Izmir in Turkey. Hourly global and diffuse radiation measurements on a horizontal surface were performed in the Solar-Meteorological Station of the Solar Energy Institute in Ege University over a 5 year period from 1994 to 1998. The present models were then compared to the 16 models available in the literature in terms of the widely used statistical indicators, namely, correlation coefficient (R-2), main percentage error (MPE), main bias error (MBE), root main square error (RMSE), and the t-statistic (t-stat) combining the last 2 errors. It may be concluded that the present models predict the values of Kd as a function of KT for Izmir better than other available models, while all the models tested appear to be location-independent models for diffuse radiation predictions, at least for Izmir.en_US
dc.identifier.doi10.1080/00908310390212444
dc.identifier.endpage649en_US
dc.identifier.issn0090-8312
dc.identifier.issn0090-8312en_US
dc.identifier.issue7en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage637en_US
dc.identifier.urihttps://doi.org/10.1080/00908310390212444
dc.identifier.urihttps://hdl.handle.net/11454/36716
dc.identifier.volume25en_US
dc.identifier.wosWOS:000183312900002en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Incen_US
dc.relation.ispartofEnergy Sourcesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectclearness indexen_US
dc.subjectdiffuse fractionen_US
dc.subjectexperimental measurementsen_US
dc.subjectglobal and diffuse radiationen_US
dc.subjectsolar energy systemen_US
dc.subjectsolar radiationen_US
dc.subjectstatistical indicatorsen_US
dc.subjectIzmir (Turkey)en_US
dc.titleComparison of the diffuse fraction of daily and monthly global radiation for Izmir, Turkeyen_US
dc.typeArticleen_US

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