Characterization of coffee husk as domestic and industrial fuel for coffee growing areas

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dc.contributor.authorAbraha, Abraha Misghina
dc.date.accessioned2019-11-16T08:20:00Z
dc.date.accessioned2020-01-07T14:42:27Z
dc.date.available2019-11-16T08:20:00Z
dc.date.available2020-01-07T14:42:27Z
dc.date.issued2011
dc.descriptionAvailable in print form, East Africana Collection, Dr. Wilbert Chagula Library, Class mark (THS EAF TP360.A27)en_US
dc.description.abstractMost of the population of Ethiopia, like that of other Sub-Saharan African countries, depend on traditional biomass for cooking and have no access to electricity. Fossil fuel costs are very high as Ethiopia is land locked. There are large amounts of coffee husks in coffee growing areas which are left unused. In most cases, they are either left in the fields or disposed by burning in open air and this causes severe environmental problems. A comprehensive study was carried out on three representative coffee growing sites of the country: West Harargie zone, Gede’o zone and Jimma zone to analyze the utilization of these coffee husks for domestic and industrial fuel applications in coffee growing areas. Survey shows that the average annual coffee husk production of the sites is: 14,000 MT for West Harargie, 18,955 MT for Gede’o and 28, 310 MT for Jimma. The minimum average LHV was found to be 16.4 MJ/kg for coffee husk (dry process) and 17.4MJ/kg for coffee husk (wet process). In general, coffee husk was found to have better thermo-chemical properties compared to other agro-residues, especially calorific value. Technological analysis shows that the suitable technologies to utilize coffee husks for fuel in coffee growing areas are gasifier stove for domestic applications and in-house consumption electricity generation for coffee hulleries via gasification. Economic and environmental analysis using RETScreen Software shows that the selected technologies are viable to be undertaken. Therefore, utilizing coffee husk for fuel using modern thermo-chemical conversion technologies has to be considered in coffee growing areasen_US
dc.identifier.citationAbraha, A. M. (2011) Characterization of coffee husk as domestic and industrial fuel for coffee growing areas, Master dissertation, University of Dar es Salaam, Dar es Salaamen_US
dc.identifier.urihttp://localhost:8080/xmlui/handle/123456789/661
dc.language.isoenen_US
dc.publisherUnversity of Dar es Salaamen_US
dc.subjectRenewable energy sourcesen_US
dc.subjectAgricultural wastes as fuleen_US
dc.subjectCoffee husken_US
dc.subjectDomestic fuelen_US
dc.subjectIndustrial fuelen_US
dc.subjectCoffee growing areasen_US
dc.titleCharacterization of coffee husk as domestic and industrial fuel for coffee growing areasen_US
dc.typeThesisen_US
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