Biomass fired hot air gas turbine with fluidized bed combustion

G. Gallmetzer, M. Gaderer, F. Volz, F. Scheffler, H. Spliethoff, M. Gaderer, H. Spliethoff

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

Abstract

The prevailing demand for decentralized energy supply out of renewable energy sources, such as biomass, requires small scale Combined Heat and Power (CHP) technologies. Current developments at the TU Munich comprise the Biomass fired Hot Air Gas Turbine (BioHGT), a fluidized bed wood combustor with integrated high temperature heat exchanger for indirect firing of microturbines at 100 kWel. The present work comprises a cycle proposal, allowing electrical efficiencies in the range of 30%. Simulation results showed, that enhanced heat exchanger tubes with structured tube walls allow higher heat flux without an increase in pumping power up to a PEC ratio of 3.5 compared with smooth tubes. The heat flux density within the fluidized bed was found to be a function of tube spacing and type of structure. Experiments showed shading of heat transfer area on axially knurled tubes. Literature data on the influence of the horizontal pitch could be confirmed. A novel ceramic corrosion protection layer was tested in a fluidized bed combustor for coating of freeboard air preheater tubes with no signs of damage in short period tests.

OriginalspracheEnglisch
TitelCFB 2008 - Proceedings of the 9th Int. Conference on Circulating Fluidized Beds, in Conjunction with the 4th International VGB Workshop "Operating Experience with Fluidized Bed Firing Systems"
Herausgeber (Verlag)TuTech Innovation GmbH
ISBN (Print)9783930400577
PublikationsstatusVeröffentlicht - 2008
Veranstaltung9th International Conference on Circulating Fluidized Beds, CFB 2008, in Conjunction with the 4th International VGB Workshop on Operating Experience with Fluidized Bed Firing Systems - Hamburg, Deutschland
Dauer: 13 Mai 200816 Mai 2008

Publikationsreihe

NameCFB 2008 - Proceedings of the 9th Int. Conference on Circulating Fluidized Beds, in Conjunction with the 4th International VGB Workshop "Operating Experience with Fluidized Bed Firing Systems"

Konferenz

Konferenz9th International Conference on Circulating Fluidized Beds, CFB 2008, in Conjunction with the 4th International VGB Workshop on Operating Experience with Fluidized Bed Firing Systems
Land/GebietDeutschland
OrtHamburg
Zeitraum13/05/0816/05/08

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