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Development and Experimental Study of Smart Solar Assisted Yogurt Processing Unit for Decentralized Dairy Value Chain

dc.date.accessioned2022-07-22T11:23:16Z
dc.date.available2022-07-22T11:23:16Z
dc.date.issued2022-04-04
dc.identifierdoi:10.17170/kobra-202207226502
dc.identifier.urihttp://hdl.handle.net/123456789/14012
dc.descriptionGefördert durch den Publikationsfonds der Universität Kassel
dc.language.isoeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectyogurt processingeng
dc.subjectsolar energyeng
dc.subjectsolar-based heating and coolingeng
dc.subjectthermal analysiseng
dc.subject.ddc630
dc.titleDevelopment and Experimental Study of Smart Solar Assisted Yogurt Processing Unit for Decentralized Dairy Value Chaineng
dc.typeAufsatz
dcterms.abstractYogurt production at the farm level is important for adding value to milk. In this study, a solar-assisted yogurt processing unit capable of performing the three processes of heating, fermentation, and cooling in a single unit was developed. It consisted of a circular chamber surrounded by a coil for heating by a solar vacuum tube collector and a pillow plate for cooling by a solar PV-powered chiller unit. Experiments were performed using 50, 40 and 30 L of raw milk under a constant water circulation rate of 50 L per minute for heating followed by a cooling process under 36, 18 and 6 rpm of stirrer speeds. The heat absorption rates of the milk were 5.48–0.31, 4.75–0.16 and 4.14–0.24 kW, and the heat removal rates from water ranged from 6.28–0.49, 5.58–0.49 and 4.88–0.69 kW for 50, 40 and 30 L of milk volume, respectively. The overall heat transfer efficiency was above 80% during the heating process. A stirring speed of 18 rpm was found to be optimal in terms of cooling speed and consistency of the yogurt. The total energy consumed was calculated to be 6.732, 5.559 and 4.207 kWh for a 50, 40 and 30 L batch capacity, respectively. The study offers a sustainable energy solution for the decentralized processing of raw milk, particularly in remote areas of the developing countries where access to electricity is limited.eng
dcterms.accessRightsopen access
dcterms.creatorHusnain, Syed Nabeel
dcterms.creatorAmjad, Waseem
dcterms.creatorMunir, Anjum
dcterms.creatorHensel, Oliver
dc.relation.doidoi:10.3390/su14074285
dc.subject.swdMilchverarbeitungger
dc.subject.swdMilchproduktger
dc.subject.swdJoghurtherstellungger
dc.subject.swdSolartechnikger
dc.subject.swdWertschöpfungger
dc.type.versionpublishedVersion
dcterms.source.identifiereissn:2071-1050
dcterms.source.issueIssue 7
dcterms.source.journalSustainabilityeng
dcterms.source.volumeVolume 14
kup.iskupfalse
dcterms.source.articlenumber4285


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