@inproceedings{19556774b80244f9b66193c6fa148f45,
title = "Biomass fired hot air gas turbine with fluidized bed combustion",
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.",
keywords = "Biomass CHP, Hot air gas turbine, Immersed heat exchanger, Microturbine, Structured tube surface",
author = "G. Gallmetzer and M. Gaderer and F. Volz and F. Scheffler and H. Spliethoff and M. Gaderer and H. Spliethoff",
year = "2008",
language = "English",
isbn = "9783930400577",
series = "CFB 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{"}",
publisher = "TuTech Innovation GmbH",
booktitle = "CFB 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{"}",
note = "9th International Conference on Circulating Fluidized Beds, CFB 2008, in Conjunction with the 4th International VGB Workshop on Operating Experience with Fluidized Bed Firing Systems ; Conference date: 13-05-2008 Through 16-05-2008",
}