Indirect Convective Solar Drying Process of Pineapples as Part of Circular Economy Strategy

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dc.contributor.authorAzouma, Yaovi Ouézoucs
dc.contributor.authorDrigalski, Lynncs
dc.contributor.authorJegla, Zdeněkcs
dc.contributor.authorReppich, Marcuscs
dc.contributor.authorTurek, Vojtěchcs
dc.contributor.authorWeiß, Maximiliancs
dc.coverage.issue15cs
dc.coverage.volume12cs
dc.date.accessioned2020-08-04T11:03:26Z
dc.date.available2020-08-04T11:03:26Z
dc.date.issued2019-07-24cs
dc.description.abstractThis study investigates the industrial-scale application of a simple convective solar drying process of pineapples as part of a circular economy strategy for developing countries. A renewable energy concept is presented, which follows the circular economy aims by effectively employing a simple system for biogas production and a two-stage drying system. Both these systems meet the requirements for implementation in the specific conditions of developing countries, of which Togo, where pineapple is a major crop, is taken as an example. With respect to earlier findings available in the literature, the paper focuses on the solar drying process, which is critical to the proposed strategy. A portable solar dryer working in indirect heating mode was built and later also modified to enhance its performance. Three main factors influencing the convective drying process, namely, drying time (270 min, 480 min), solar radiation intensity (650 W/m2, 1100 W/m2), and slice thickness (6–8 mm, 12–14 mm), were considered. The statistical Design of Experiments (DOE) method was applied to reduce the number and scope of experiments. In the best case, the moisture content was reduced from 87.3 wt % in fresh samples to 29.4 wt % in dried samples, which did not meet the quality requirements for dried fruit. An additional conventional post-solar drying procedure would, therefore, still be necessary. Nonetheless, the results show that in the case of pineapple drying the consumption of fossil fuels can be decreased significantly if convective solar pre-drying is employed.en
dc.formattextcs
dc.format.extent1-18cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationENERGIES. 2019, vol. 12, issue 15, p. 1-18.en
dc.identifier.doi10.3390/en12152841cs
dc.identifier.issn1996-1073cs
dc.identifier.other157807cs
dc.identifier.urihttp://hdl.handle.net/11012/188956
dc.language.isoencs
dc.publisherMDPI AGcs
dc.relation.ispartofENERGIEScs
dc.relation.urihttps://www.mdpi.com/1996-1073/12/15/2841cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1073/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectdryingen
dc.subjectsolar energyen
dc.subjectsustainable processingen
dc.subjectenergy efficiencyen
dc.titleIndirect Convective Solar Drying Process of Pineapples as Part of Circular Economy Strategyen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-157807en
sync.item.dbtypeVAVen
sync.item.insts2020.08.04 13:03:26en
sync.item.modts2020.08.04 12:43:51en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav procesního inženýrstvícs
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