Numerical simulation of a parabolic trough collector containing a novel parabolic reflector with varying focal length

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dc.authorid0000-0001-9970-1111en_US
dc.contributor.authorKülahlı, Mehmet Canalp
dc.contributor.authorAkbulut Özen, Songül
dc.contributor.authorEtemoglu, Akin Burak
dc.date.accessioned2021-03-20T20:12:29Z
dc.date.available2021-03-20T20:12:29Z
dc.date.issued2019
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractIn this study, a novel parabolic reflector for a Parabolic Trough Collector (PTC) is presented. The reflector contains a varying focal length in lengthwise direction while still maintaining a fixed focal line. Due to this geometry, heat flux around the absorber not only varies circumferentially but also axially. A new geometric design parameter is defined which is the ratio of focal length at the ends, and the effects of it on the thermal behavior are investigated numerically. To represent the heat flux realistically a method is presented by employing a custom code to construct the novel reflector in SolTrace (a ray tracing software), and heat flux profile around the absorber is calculated. This flux is applied to a Computational Fluid Dynamics (CFD) model as a source term and simulations are realized. The coupled model is validated with the experimental results regarding the LS-2 module. Besides the parametric analyses about geometric factor, flow rate optimization analyses are also. As a result of the parametric analyses, a 0.21% rise is achieved for thermal efficiency and a 0.63% increase is achieved for net energy gain as a result of the flow rate optimization study.en_US
dc.identifier.doi10.1016/j.applthermaleng.2019.114210en_US
dc.identifier.issn1359-4311
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttp://doi.org/10.1016/j.applthermaleng.2019.114210
dc.identifier.urihttps://hdl.handle.net/20.500.12885/579
dc.identifier.volume161en_US
dc.identifier.wosWOS:000488887200086en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorKülahlı, Mehmet Canalp
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofApplied Thermal Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectParabolic trough collectoren_US
dc.subjectVarying focal lengthen_US
dc.subjectAxial non-uniform heat fluxen_US
dc.subjectNumerical simulationsen_US
dc.subjectThermal performanceen_US
dc.titleNumerical simulation of a parabolic trough collector containing a novel parabolic reflector with varying focal lengthen_US
dc.typeArticleen_US

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