Analysis Of A Coffee Husk Fired Cogeneration Plant For Sheka Zone Coffee Processing Industries

Abstract

Nowadays Our Energy Needs Have Grown Exponentially Corresponding With Human Population Growth And Technological Advancement. Energy Consumption Linked To Non-Renewable Resources Contributes To Greenhouse Gas Emissions And Enhances Resource Depletion. Therefore, In This Work The Thermal Analysis Of A Coffee Husk Fired Cogeneration Plant For Sheka Zone Coffee Processing Industries Has Been Presented. In This Context The Use Of Coffee Husk Has Been Widely Studied As An Alternative Energy Source In Order To Cover The Heat And Power Demand Of The Coffee Processing Industries In The Zone. The Analysis Use Combustion Of Coffee Husk And Solid Fuel Fired Boiler Technologies To Transform Coffee Husks Into Electrical And Heat Energy (Chp) Considering Its Physical And Chemical Properties Based On The Selected Design Parameters Operating Steam Pressure Of 10 Bar With The Average Fuel Consumption Rate Of 1000 Kg/H Which Is Calculated From The Collected Data Of The Zone And Combustion Chamber Which Utilizes Fluidized Combustion System. The Plant Is Analyzed For Thermal Utilization Of Coffee Husk In Coffee Processing Industries In Sheka Zone. The Average Generation Of The Husk Per 100 Kg Of Dry Coffee Cherry Was Considered In Order To Assess The Availability Of The Husk. The Data Were Collected From Sheka Zone Agricultural And Natural Resource Development Department, Yeki Woreda Agricultural And Natural Resource Development Office And From The Coffee Processing Industries. Calculation Of Calorific Value Of The Husk To Determine The Heat Contents Was Carried Out Using Bomb Calorimeter In The Laboratory Of Geological Survey Of Ethiopian. The Calorific Values Obtained From This Analysis Were 18.98 Mj/Kg. The Maximum Temperature Of The Furnace Attained From The Energy Balance Based On This Value Inside The Combustion Chamber Was 1489 ??? And The Amount Of Air Required Per Kg Of Coffee Husk Was 5.45 Kg. The Paper Also Included The Design Calculation Of The Steam Generator Which Provides Steam With A Maximum Temperature Of 518 ??? To The Steam Turbine. In Addition, The Thesis Discussed The Selected Rotary Type Dryer Design Based On The Collected And Literature Data And The Calculation Of The Cogeneration Plant Energy Analysis Using The Rankin Thermodynamic Cycle.