Exergetic analysis of solid oxide fuel cell and biomass gasification integration with heat pipes |
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| Authors: | L. Fryda K.D. Panopoulos J. Karl E. Kakaras |
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| Affiliation: | 1. Laboratory of Steam Boilers and Thermal Plants, School of Mechanical Engineering, Thermal Engineering Section, National Technical University of Athens, 9 Heroon Polytechniou Ave., Zografou 15780, Greece;2. Institute for Solid Fuels Technology and Applications, Centre for Research and Technology Hellas, 4th km N.R. Ptolemais-Kozani, P.O. Box 95, 50200 Ptolemais, Greece;3. Institute of Thermal Power Systems, Technical University of Munich, Boltzmannstrasse 15, 85747 Garching, Germany |
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| Abstract: | This paper presents an exergetic analysis of a combined heat and power (CHP) system, integrating a near-atmospheric solid oxide fuel cell (SOFC) with an allothermal biomass fluidised bed steam gasification process. The gasification heat requirement is supplied to the fluidised bed from the SOFC stack through high-temperature sodium heat pipes. The CHP system was modelled in AspenPlus™ software including sub-models for the gasification, SOFC, gas cleaning and heat pipes. For an average current density of 3000 A m−2 the proposed system would consume 90 kg h−1 biomass producing 170 kWe net power with a system exergetic efficiency of 36%, out of which 34% are electrical. |
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| Keywords: | Exergy SOFC Biomass Gasification AspenPlus&trade |
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