A small gas turbine needs a good recuperator to achieve high efficiency. It is desirable that this recuperator be small in size, light in weight, and low cost. Laminar flow theory is used to show the effect of heat transfer surface selection, passage size, and flow length. A comparative study was then made of counterflow recuperators using heat transfer test data from published sources to show how these variables apply to a typical design. One group of surfaces with simple flow passages, smooth, straight, and constant cross-section, followed laminar flow theory quite closely. A second group of more complicated surfaces deviated considerably from laminar flow theory. For a given performance, both groups show that as flow length is reduced, along with the corresponding passage size, the flow volume and surface area decreases. The corresponding material weight and cost also decrease. There are practical limitations on how far this can go.
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ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference
June 16–19, 2003
Atlanta, Georgia, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
0-7918-3686-X
PROCEEDINGS PAPER
Laminar Flow Theory as a Guide to Compact Recuperator Design
William I. Chapman
William I. Chapman
Williams International Company, LLC, Walled Lake, MI
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William I. Chapman
Williams International Company, LLC, Walled Lake, MI
Paper No:
GT2003-38087, pp. 677-684; 8 pages
Published Online:
February 4, 2009
Citation
Chapman, WI. "Laminar Flow Theory as a Guide to Compact Recuperator Design." Proceedings of the ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. Volume 3: Turbo Expo 2003. Atlanta, Georgia, USA. June 16–19, 2003. pp. 677-684. ASME. https://doi.org/10.1115/GT2003-38087
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