Scaling 3-36KW microturbines

Head, Adam Joseph and Visser, W. P. J. (2012). Scaling 3-36KW microturbines. In: Proceedings of ASME Turbo Expo 2012: GT2012. ASME Turbo Expo 2012: Power for Land, Sea and Air, Copenhagen, Denmark, (609-618). 11-15 June 2012. doi:10.1115/GT2012-68685

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Author Head, Adam Joseph
Visser, W. P. J.
Title of paper Scaling 3-36KW microturbines
Conference name ASME Turbo Expo 2012: Power for Land, Sea and Air
Conference location Copenhagen, Denmark
Conference dates 11-15 June 2012
Proceedings title Proceedings of ASME Turbo Expo 2012: GT2012
Place of Publication New York, NY, USA
Publisher American Society of Mechanical Engineers (ASME)
Publication Year 2012
Sub-type Fully published paper
DOI 10.1115/GT2012-68685
Open Access Status
ISBN 9780791844717
Volume 5
Start page 609
End page 618
Total pages 9
Collection year 2013
Language eng
Abstract/Summary Microturbine performance and losses are strongly dependent on scale, especially at very small sizes. As a consequence, prediction of these scale effects is important within the framework of conceptual design and sizing studies where the power output is varied in order to optimize the application in which the microturbine is integrated. The scale effects can be addressed for the individual gas path and mechanical components which include turbomachinery, ducting, bearings, recuperators, combustors etc. Absolute prediction of efficiencies at the initial design stage, or at any other stage, is difficult, and the designer usually relies upon empirical loss models and correlations. Using both empirical and physical analysis, these relations can be extended to include size as a variable providing a means to predict changes of losses relative to a known reference case. This paper describes the results from an analysis of size-related loss mechanisms in small turbomachinery derived from turbochargers. A microturbine cycle performance analysis is presented in order to illuminate how these effects influence efficiency at varying design power levels. In addition, geometric size and weight relations are derived for prediction of physical dimensions as a function of design power. A case study is presented scaling microturbine concepts in the range of 10-36kW for an electric vehicle range extender application.
Keyword Range extender
Size effects
Scale relations
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Paper GT2012-68685

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Created: Wed, 19 Dec 2012, 15:29:28 EST by Rose Clements on behalf of School of Mechanical and Mining Engineering