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Performance of a Hybrid Power Generation System Using Biomass Gasification and Concentrated Solar Thermal Processes
Department of Environmental Science and Technology, Tokyo Institute of Technology, Yokohama.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
Department of Environmental Science and Technology, Tokyo Institute of Technology, Yokohama.
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology.
2014 (English)In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 61, 2149–2153- p.Article in journal (Refereed)
Abstract [en]

A hybrid power generation system using biomass gasification and concentrated solar thermal processes (CSTP) was proposed. We analysed the system performance of a combined cycle with a bubbling fluidized bed gasifier (BFG) using CO2-H2O-O2 mixture and CSTP using molten salt. BFG was simulated by a semi-kinetic model, applying a continuously stirred tank reactor (CSTR) model for the bed behaviour and a plug flow reactor (PFR) model for the freeboard reactions. Operating conditions of the plant and heat exchanger network were optimized separately. The current paper shows the effects of gasifying agents and heat input from CSTP on system efficiency among examined parameters. Pure steam at the molar ratio of steam to carbon in biomass around 0.5 was optimum gasifying agent in this system. By increasing heat input from CSTP, marginal efficiency of biomass-to-electricity was enhanced by 6.2-6.5% (from 39.9 ∼41.2% to 46.1∼47.5%).

Place, publisher, year, edition, pages
2014. Vol. 61, 2149–2153- p.
Research subject
Energy Engineering
URN: urn:nbn:se:ltu:diva-35906DOI: 10.1016/j.egypro.2014.12.097Local ID: aa35023f-5bd6-4140-a71e-b2688b6ab7d1OAI: diva2:1009160
International Conference on Applied Energy : 30/05/2014 - 02/06/2014
Validerad; 2015; Nivå 1; 20150113 (andbra); Konferensartikel i tidskriftAvailable from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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Umeki, Kentaro
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