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Biomass Article.pdf - Tribal Energy Program: Biomass Energy...

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U.S. Department of Energy - Energy Efficiency and Renewable EnergyTribal Energy ProgramBiomass Energy - BiopowerBiopower (biomass power) is electricity produced from plant materials and animalproducts. Biomass fuels include residues from the wood and paper productsindustries, residues from food production and processing, trees and grasses grownspecifically as energy crops, and gaseous fuels produced from solid biomass, animalwastes, and landfills.Biopower technologies convert renewable biomass fuels into electricity (and heat)using modern boilers, gasifiers, turbines, generators, and fuel cells.Credit: Daniel PeckCredit: Warren GretzWood chips made from energy crops, such as hybrid willows (above left), provideraw material for a new gasifier at the McNeil Generating Station (above right), a50-MW wood-fired power plant located in Burlington, Vermont.Direct Combustion and CofiringBiomass can be converted into electricity in one of several processes. The majorityof biomass electricity is generated today using a steam cycle, as shown in Diagram1. In this process, biomass is burned in a boiler to make steam. The steam thenturns a turbine, which is connected to a generator that produces electricity.Diagram 1: In a direct combustion system, processed biomass is the boiler fuelthat produces steam to operate a steam turbine and generator to make electricity.Biomass can also be burned with coal in a boiler (in a conventional power plant) toproduce steam and electricity. Cofiring biomass with coal is an affordable way forutilities to obtain some of the environmental benefits of using renewable energy.GasificationSolid biomass can be converted into a fuel gas in a gasifier such as the one shown inDiagram 2. In this method, sand (at about 1,500°F) surrounds the biomass andTribal Energy Program: Biomass Energy - Biopower...

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Term
Fall
Professor
NoProfessor
Tags
Internal combustion engine, Coal, Electricity generation, Biopower

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