Theoretical and experimental analysis on the passive cooling effect of transpired solar collectors

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dc.authoridBokor, Balazs/0000-0002-7883-1440
dc.authorwosidKajtar, Laszlo/H-1541-2012
dc.authorwosidBokor, Balazs/AAY-2181-2020
dc.contributor.authorBokor, Balazs
dc.contributor.authorAkhan, Hacer
dc.contributor.authorEryener, Dogan
dc.contributor.authorKajtar, Laszlo
dc.date.accessioned2024-06-12T10:59:46Z
dc.date.available2024-06-12T10:59:46Z
dc.date.issued2017
dc.departmentTrakya Üniversitesien_US
dc.description.abstractThe present study provides results about the experimental performance of the transpired solar collector's passive cooling effect for the first time. In order to see the cooling performance of the transpired solar collector, a slope-adjustable experimental setup was built on the campus of Trakya University, Engineering Faculty, Edirne, Turkey. Solar radiation, ambient temperature, absorber temperature, cavity and back plate temperatures were monitored during summer period for different collector tilts. A physical and a mathematical model have been created to describe the heat transfer processes in the collector. The models were used to evaluate the measured data. It has been found that a natural airflow comes to be through the perforated plate, which acts similarly as in open-end double layer roofs. This airflow discharges the heat from the plenum decoupling the back plate from the exposed perforated plate. The temperature of the back plate, which represents the roof under the transpired collector, is significantly lower compared to that of the exposed roof on a typical sunny day. Similarly, the heat gain of the back plate is remarkably lower than the solar radiation received on the exposed roof. It has been found that the passive cooling effect of the transpired solar collector is increasing with rising intensity of radiation, as the heat transfer coefficient between the plenum and the back plate decreases with increasing solar radiation. Due to the natural character of the airflow in the plenum, wind heat losses are strongly dependent on the airflow's characteristics. Convective losses of the perforated plate have been defined by using two methods energy balance equations and a referenced heat loss correlation. (C) 2017 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipNational Talent Program of the Hungarian Human Capacities Fund; Trakya University Engineering Facultyen_US
dc.description.sponsorshipThis work has been funded by the National Talent Program of the Hungarian Human Capacities Fund. For the support that made a research semester at Trakya University possible, author B. Bokor would thereby like to give thanks to the Hungarian Ministry of Human Capacities. Also it has been supported by Trakya University Engineering Faculty and the location of experimental prototype at the faculty campus is provided by Trakya University Engineering Faculty.en_US
dc.identifier.doi10.1016/j.enbuild.2017.09.063
dc.identifier.endpage120en_US
dc.identifier.issn0378-7788
dc.identifier.issn1872-6178
dc.identifier.scopus2-s2.0-85030449660en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage109en_US
dc.identifier.urihttps://doi.org/10.1016/j.enbuild.2017.09.063
dc.identifier.urihttps://hdl.handle.net/20.500.14551/20575
dc.identifier.volume156en_US
dc.identifier.wosWOS:000416186600011en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofEnergy And Buildingsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDouble-Skin Roofen_US
dc.subjectTranspired Solar Collectoren_US
dc.subjectPassive Coolingen_US
dc.subjectSolar Gainen_US
dc.subjectSolar Cooling Load Reductionen_US
dc.subjectHeat-Transferen_US
dc.subjectThermal Performanceen_US
dc.subjectAir Heatersen_US
dc.subjectClear Skiesen_US
dc.subjectRoofen_US
dc.subjectTemperatureen_US
dc.subjectEmissivityen_US
dc.subjectCavityen_US
dc.titleTheoretical and experimental analysis on the passive cooling effect of transpired solar collectorsen_US
dc.typeArticleen_US

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