Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/68990
Type: Artigo de periódico
Title: HYDROGEN FROM BIOMASS GAS STEAM REFORMING FOR LOW TEMPERATURE FUEL CELL: ENERGY AND EXERGY ANALYSIS
Author: Sordi, A
Silva, EP
Milanez, LF
Lobkov, DD
Souza, SNM
Abstract: This work presents a method to analyze hydrogen production by biomass gasification, as well as electric power generation in small scale fuel cells. The proposed methodology is the thermodynamic modeling of a reaction system for the conversion of methane and carbon monoxide (steam reforming), as well as the energy balance of gaseous flow purification in PSA (Pressure Swing Adsorption) is used with eight types of gasification gases in this study. The electric power is generated by electrochemical hydrogen conversion in fuel cell type PEMFC (Proton Exchange Membrane Fuel Cell). Energy and exergy analyses are applied to evaluate the performance of the system model. The simulation demonstrates that hydrogen production varies with the operation temperature of the reforming reactor and with the composition of the gas mixture. The maximum H(2) mole fraction (0.6-0.64 mol.mol(-1)) and exergetic efficiency of 91-92.5% for the reforming reactor are achieved when gas mixtures of higher quality such as: GGAS2, GGAS4 and GGAS5 are used. The use of those gas mixtures for electric power generation results in lower irreversibility and higher exergetic efficiency of 30-30.5%.
Subject: Hydrogen
Fuel cell
Gasification gas of biomass
Steam reforming
Thermodynamic analysis
Country: Brasil
Editor: Brazilian Soc Chemical Eng
Rights: aberto
Date Issue: 2009
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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