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A modification of a traditional Ethiopian maize store for solar powered ambient drying to reduce post-harvest losses

dc.date.accessioned2020-09-09T10:03:23Z
dc.date.available2020-09-09T10:03:23Z
dc.date.issued2020-07-14
dc.identifierdoi:10.17170/kobra-202009091751
dc.identifier.urihttp://hdl.handle.net/123456789/11791
dc.description.sponsorshipGefördert durch den Publikationsfonds der Universität Kasselger
dc.language.isoengeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectengineeringeng
dc.subjectphotovoltaicseng
dc.subjectrenewable energyeng
dc.subject.ddc620
dc.subject.ddc630
dc.titleA modification of a traditional Ethiopian maize store for solar powered ambient drying to reduce post-harvest losseseng
dc.typeAufsatz
dcterms.abstractA gombisa is a traditional Ethiopian structure widely used for maize storage over several months. It lacks adequate ventilation for timely moisture removal, which promotes mold development and aflatoxin production. In this study, a traditional gombisa was compared to one modified by installing a solar powered fan to provide forced ambient air ventilation during daytime. Approximately 900 kg of moist ear maize were loaded into each structure and samples from selected locations were weighed periodically to monitor moisture loss. Temperature and relative humidity of ambient air and inside the maize bulk were continuously recorded. Significantly faster drying was achieved in the modified gombisa, where drying occurred from bottom to top. In the traditional store, drying was much faster at the surface, with drying rate declining sharply with increasing depth in the bulk due to more limited air exchange. Relative humidity in the bulk center of the traditional structure remained above 90% for more than 4 weeks while in the modified gombisa it decreased progressively from the beginning of the trial. The results are promising and the modifications simple to implement, with the potential to effectively reduce post-harvest losses of maize. Field tests in Ethiopia are recommended.eng
dcterms.accessRightsopen access
dcterms.creatorRomán, Franz
dcterms.creatorGarbaba, Chemeda Abedeta
dcterms.creatorSchellert, Christian
dcterms.creatorHensel, Oliver
dc.relation.doidoi:10.1038/s41598-020-68485-2
dc.subject.swdMaisger
dc.subject.swdLagerungger
dc.subject.swdEntfeuchtenger
dc.subject.swdSonnenenergieger
dc.subject.swdVentilatorger
dc.subject.swdÄthiopienger
dc.type.versionpublishedVersion
dcterms.source.identifierISSN 2045-2322
dcterms.source.journalScientific reportseng
dcterms.source.pageinfo11588
dcterms.source.volume10
kup.iskupfalse


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