Heat transfer experiments were conducted with three (3) different target plate configurations: a baseline copper flat smooth plate, a copper plate model with copper pins and a copper plate model with Teflon pins, to determine average heat transfer coefficients on the flat and pin surfaces for application with different plate materials. For each target plate surface configuration, the heat transfer experiments were conducted with selected impingement orifice plate configurations and with selected spacing between the orifice plate and the heat transfer target plate. The heat transfer results for the baseline copper smooth flat plate were in good agreement with a well-recognized correlation for the flow regions used in the correlation. An analytical procedure, similar to that used by Metzger et al. for pin-fins in coolant channels, was developed to separate the average heat transfer coefficients on the flat and pin surfaces. The results with the copper pins showed modest increases of approximately 35 percent in heat transfer at lower Reynolds numbers, decreasing with increased Reynolds number. Application of the experimental results to an analysis for high-pressure engine conditions with modest thermal conductivity materials showed that the overall heat transfer coefficient can decrease with pin surfaces for some conditions, compared to flat plates.
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ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition
June 7–10, 1999
Indianapolis, Indiana, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7860-6
PROCEEDINGS PAPER
Impingement Cooling Experiments With Flat Plate and Pin Plate Target Surfaces
Rainer Hoecker,
Rainer Hoecker
ABB Corporate Research Ltd., Baden-Daettwil, Switzerland
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Bruce V. Johnson,
Bruce V. Johnson
ABB Corporate Research Ltd., Baden-Daettwil, Switzerland
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Josef Hausladen,
Josef Hausladen
KRONES AG, Neutraubling, Germany
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Matthias Rothbrust,
Matthias Rothbrust
ABB Power Generation Ltd., Baden, Switzerland
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Bernhard Weigand
Bernhard Weigand
ABB Power Generation Ltd., Baden, Switzerland
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Rainer Hoecker
ABB Corporate Research Ltd., Baden-Daettwil, Switzerland
Bruce V. Johnson
ABB Corporate Research Ltd., Baden-Daettwil, Switzerland
Josef Hausladen
KRONES AG, Neutraubling, Germany
Matthias Rothbrust
ABB Power Generation Ltd., Baden, Switzerland
Bernhard Weigand
ABB Power Generation Ltd., Baden, Switzerland
Paper No:
99-GT-252, V003T01A070; 8 pages
Published Online:
December 16, 2014
Citation
Hoecker, R, Johnson, BV, Hausladen, J, Rothbrust, M, & Weigand, B. "Impingement Cooling Experiments With Flat Plate and Pin Plate Target Surfaces." Proceedings of the ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration. Indianapolis, Indiana, USA. June 7–10, 1999. V003T01A070. ASME. https://doi.org/10.1115/99-GT-252
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