Numerical study on photovoltaic/thermal systems with extended surfaces

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dc.contributor.authorKalkan, Cem
dc.contributor.authorEzan, Mehmet Akif
dc.contributor.authorDuquette, Jean
dc.contributor.authorBalaman, Sebnem Yilmaz
dc.contributor.authorYilanci, Ahmet
dc.date.accessioned2019-10-27T09:42:17Z
dc.date.available2019-10-27T09:42:17Z
dc.date.issued2019
dc.departmentEge Üniversitesien_US
dc.description.abstractThe current study presents a novel and straightforward approach for simulating photovoltaic/thermal (PV/T) systems using the commercial computational fluid dynamics (CFD) solver ANSYS-FLUENT. Instead of resolving the natural convection within the air gap between the PV and the glass cover, the effective thermal conductivity approach is implemented. Moreover, the solar radiation incident on the PV layer is directly included in the energy equation of the PV domain to evaluate the resultant power output and heat generation. The validity of these implications is proven by comparing predicted data with experimental data from the literature. Comparative results reveal a root-mean-square error of 7% and 2% for the PV temperature and the outlet air temperature, respectively. A comprehensive numerical analysis is also conducted for a PV/T system with and without finned surfaces. In the parametric study, the impacts of varying a number of design parameters, operating conditions, and weather data over a wide range are assessed. Results reveal that channel height and air velocity have the greatest impact on the overall efficiency and outlet air temperature of a PV/T system. An optimization study is also conducted using the response surface methodology to obtain optimal values of design parameters and operating conditions for this system. The highest overall efficiencies and outlet air temperatures are achieved in PV/T systems comprising narrow channel geometries, regardless of the operating conditions or weather data considered. Optimal conditions are achieved for a collector with a collector length of 1.5 m, a channel height of 1 cm, and an air velocity of 2.3 m/s. For the optimal design, overall efficiency and outlet temperature values are evaluated as 53.4% and 310.9 K, respectively. Sensitivity analyses also observe the impact of adding fins to the air channel, and it is concluded that the addition of fins improves the overall efficiency of the PV/T system by up to 19%. However, adding fins does not significantly affect the outlet air temperature; nor does it improve the overall efficiency of the PV/T system beyond a critical channel height.en_US
dc.identifier.doi10.1002/er.4477
dc.identifier.endpage5229en_US
dc.identifier.issn0363-907X
dc.identifier.issn1099-114X
dc.identifier.issn0363-907Xen_US
dc.identifier.issn1099-114Xen_US
dc.identifier.issue10en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage5213en_US
dc.identifier.urihttps://doi.org/10.1002/er.4477
dc.identifier.urihttps://hdl.handle.net/11454/28749
dc.identifier.volume43en_US
dc.identifier.wosWOS:000477014400008en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.relation.ispartofInternational Journal of Energy Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCFDen_US
dc.subjectfinned channelen_US
dc.subjectoptimizationen_US
dc.subjectPVen_US
dc.subjectT systemen_US
dc.titleNumerical study on photovoltaic/thermal systems with extended surfacesen_US
dc.typeArticleen_US

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