For more than a decade up to now there is an ongoing interest in small gas turbines downsized to micro-scale. With their high energy density they offer a great potential as a substitute for today’s unwieldy accumulators, found in a variety of applications like laptops, small tools etc. But micro-scale gas turbines could not only be used for generating electricity, they could also produce thrust for powering small unmanned aerial vehicles (UAVs) or similar devices. Beneath all the great design challenges with the rotating parts of the turbomachinery at this small scale, another crucial item is in fact the combustion chamber needed for a safe and reliable operation. With the so called regular micromix burning principle for hydrogen successfully downscaled in an initial combustion chamber prototype of 10 kW energy output, this paper describes a new design attempt aimed at the integration possibilities in a μ-scale gas turbine. For manufacturing the combustion chamber completely out of stainless steel components, a recuperative wall cooling was introduced to keep the temperatures in an acceptable range. Also a new way of an integrated ignition was developed. The detailed description of the prototype’s design is followed by an in depth report about the test results. The experimental investigations comprise a set of mass flow variations, coupled with a variation of the equivalence ratio for each mass flow at different inlet temperatures and pressures. With the data obtained by an exhaust gas analysis, a full characterisation concerning combustion efficiency and stability of the prototype chamber is possible. Furthermore the data show a full compliance with the expected operating requirements of the designated μ-scale gas turbine.
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ASME Turbo Expo 2010: Power for Land, Sea, and Air
June 14–18, 2010
Glasgow, UK
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4400-7
PROCEEDINGS PAPER
Design and Testing of a Micromix Combustor With Recuperative Wall Cooling for a Hydrogen Fuelled μ-Scale Gas Turbine Available to Purchase
A. E. Robinson,
A. E. Robinson
Rolls-Royce Deutschland Ltd & Co KG, Oberursel, Germany
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H. H.-W. Funke,
H. H.-W. Funke
Aachen University of Applied Sciences, Aachen, Germany
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P. Hendrick,
P. Hendrick
Universite´ Libre de Bruxelles, Brussels, Belgium
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R. Wagemakers
R. Wagemakers
Royal Military Academy, Brussels, Belgium
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A. E. Robinson
Rolls-Royce Deutschland Ltd & Co KG, Oberursel, Germany
H. H.-W. Funke
Aachen University of Applied Sciences, Aachen, Germany
P. Hendrick
Universite´ Libre de Bruxelles, Brussels, Belgium
R. Wagemakers
Royal Military Academy, Brussels, Belgium
Paper No:
GT2010-23453, pp. 587-596; 10 pages
Published Online:
December 22, 2010
Citation
Robinson, AE, Funke, HH, Hendrick, P, & Wagemakers, R. "Design and Testing of a Micromix Combustor With Recuperative Wall Cooling for a Hydrogen Fuelled μ-Scale Gas Turbine." Proceedings of the ASME Turbo Expo 2010: Power for Land, Sea, and Air. Volume 5: Industrial and Cogeneration; Microturbines and Small Turbomachinery; Oil and Gas Applications; Wind Turbine Technology. Glasgow, UK. June 14–18, 2010. pp. 587-596. ASME. https://doi.org/10.1115/GT2010-23453
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