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Comparative thermal analyses of solar milk pasteurizers integrated with solar concentrator and evacuated tube collector

dc.date.accessioned2022-08-26T11:14:07Z
dc.date.available2022-08-26T11:14:07Z
dc.date.issued2022
dc.identifierdoi:10.17170/kobra-202208266766
dc.identifier.urihttp://hdl.handle.net/123456789/14105
dc.description.sponsorshipGefördert durch den Publikationsfonds der Universität Kasselger
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectsolar milk pasteurizationeng
dc.subjectevacuated tube collectoreng
dc.subjectparaboloidal concentratoreng
dc.subjectsteam receivereng
dc.subjectthermal analyseseng
dc.subjectmilk processing at off grid locationseng
dc.subject.ddc630
dc.titleComparative thermal analyses of solar milk pasteurizers integrated with solar concentrator and evacuated tube collectoreng
dc.typeAufsatz
dcterms.abstractSolar-based milk pasteurization enables decentralized maintenance of milk in remote areas of developing countries like Pakistan. Two innovative and efficient medium temperature range solar techniques; solar concentrator (SC) and evacuated tube collectors (ETC) were employed and compared based on theoretical and experimental analyses for an expedient and effective milk pasteurization. The detailed thermal analyses of both techniques were conducted to investigate the useful energy and losses during pasteurization. The available energy was estimated to be 8.11 and 5.63 kWh at the aperture areas of SC, ETC, respectively. Theoretically, it was also evident that SC, ETC require 4.68 and 4.22 kWh, respectively for a temperature difference of 35–40 °C during pasteurization for the designed milk batch size. However, under practical conditions, heat energy consumed for the milk pasteurization system coupled with SC, ETC was recoded to be 3.56 kWh and 3.91 kWh respectively; this value lies from 3.78–4.32 kWh to pasteurize 100-liters of milk for a temperature difference of 35–40 °C. The predicted value of efficiency for SC, ETC was found to be 57.71 and 74.88% respectively. The efficiency values under field conditions for SC, ETC were found to be 54 and 71.41% respectively. Generally, both systems performed exceptionally however, ETC outperforms SC theoretically and practically attributing to significantly reduced optical and thermal losses. This study concluded that ETC is efficient, simpler in design, stable, compact and cost-effective which provides an excellent opportunity for decentralized milk pasteurization.eng
dcterms.accessRightsopen access
dcterms.creatorKhan, Khawar Saeed
dcterms.creatorLatif, Yasir
dcterms.creatorMunir, Anjum
dcterms.creatorHensel, Oliver
dc.relation.doidoi:10.1016/j.egyr.2022.06.001
dc.subject.swdPakistanger
dc.subject.swdPasteurisierenger
dc.subject.swdNachhaltigkeitger
dc.subject.swdSolartechnikger
dc.subject.swdEnergieeffizienzger
dc.subject.swdMilchwirtschaftger
dc.subject.swdKostensenkungger
dc.subject.swdMilchversorgungger
dc.subject.swdErneuerbare Energienger
dc.subject.swdThermoanalyseger
dc.subject.swdSupply Chain Managementeng
dc.type.versionpublishedVersion
dcterms.source.identifiereissn:2352-4847
dcterms.source.journalEnergy Reportseng
dcterms.source.pageinfo7917-7930
dcterms.source.volumeVolume 8
kup.iskupfalse


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