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Thermodynamic 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.ORCID iD: 0000-0002-4909-6643
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0001-6081-5736
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-4532-4530
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2015 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 160, p. 664-672Article in journal (Refereed) Published
Abstract [en]

This paper describes the investigation of a hybrid power production system from biomass and solar energy. This paper suggests integration through heat exchanger network as a useful approach to obtain the synergy between biomass and solar. Biomass is first gasified in a bubbling fluidized bed (BFB) gasifier, and then syngas is used in a gas turbine. Excess heat exists in this sub-system and concentrated solar thermal process (CSTP) while there is a demand of steam for generating gasifying agent. Steam Rankine cycle exploits the heat created by these thermal streams to generate power while satisfying the steam demands. Thermodynamic performance was analyzed by process modelling with a semi-kinetic model of BFB gasifier and pinch analyses. The composition and temperature of gasifying agent showed some effect on the overall efficiency of the system. Higher overall efficiency of the system was achieved at higher temperature and higher O2 fraction in the O2-steam mixture as gasifying agent. The increase in thermal input from CSTP had positive effect on overall efficiency of the hybrid system until thermal input from CSTP becomes dominant against thermal stream related to the gasifier and the gas turbine.

Place, publisher, year, edition, pages
2015. Vol. 160, p. 664-672
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-7381DOI: 10.1016/j.apenergy.2015.05.084Local ID: 5c15e41c-5a03-49f0-b32b-c9320a193e53OAI: oai:DiVA.org:ltu-7381DiVA: diva2:980270
Note
Validerad; 2016; Nivå 2; 20150615 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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