Enhanced heat transfer surface for cast-in-bump-covered cooling surfaces and methods of enhancing heat transfer
Abstract
An annular turbine shroud separates a hot gas path from a cooling plenum containing a cooling medium. Bumps are cast in the surface on the cooling side of the shroud. A surface coating overlies the cooling side surface of the shroud, including the bumps, and contains cooling enhancement material. The surface area ratio of the cooling side of the shroud with the bumps and coating is in excess of a surface area ratio of the cooling side surface with bumps without the coating to afford increased heat transfer across the element relative to the heat transfer across the element without the coating.
- Inventors:
-
- Glenmont, NY
- Pownal, VT
- Simpsonville, SC
- Cincinnati, OH
- Lincoln City, OR
- Issue Date:
- Research Org.:
- General Electric Co., Schenectady, NY (United States)
- OSTI Identifier:
- 874499
- Patent Number(s):
- 6402464
- Assignee:
- General Electric Company (Schenectady, NY)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- DOE Contract Number:
- FC21-95MC31176
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- enhanced; heat; transfer; surface; cast-in-bump-covered; cooling; surfaces; methods; enhancing; annular; turbine; shroud; separates; hot; gas; path; plenum; containing; medium; bumps; cast; coating; overlies; including; contains; enhancement; material; ratio; excess; afford; increased; element; heat transfer; hot gas; cooling medium; gas path; enhanced heat; /415/165/228/
Citation Formats
Chiu, Rong-Shi Paul, Hasz, Wayne Charles, Johnson, Robert Alan, Lee, Ching-Pang, and Abuaf, Nesim. Enhanced heat transfer surface for cast-in-bump-covered cooling surfaces and methods of enhancing heat transfer. United States: N. p., 2002.
Web.
Chiu, Rong-Shi Paul, Hasz, Wayne Charles, Johnson, Robert Alan, Lee, Ching-Pang, & Abuaf, Nesim. Enhanced heat transfer surface for cast-in-bump-covered cooling surfaces and methods of enhancing heat transfer. United States.
Chiu, Rong-Shi Paul, Hasz, Wayne Charles, Johnson, Robert Alan, Lee, Ching-Pang, and Abuaf, Nesim. Tue .
"Enhanced heat transfer surface for cast-in-bump-covered cooling surfaces and methods of enhancing heat transfer". United States. https://www.osti.gov/servlets/purl/874499.
@article{osti_874499,
title = {Enhanced heat transfer surface for cast-in-bump-covered cooling surfaces and methods of enhancing heat transfer},
author = {Chiu, Rong-Shi Paul and Hasz, Wayne Charles and Johnson, Robert Alan and Lee, Ching-Pang and Abuaf, Nesim},
abstractNote = {An annular turbine shroud separates a hot gas path from a cooling plenum containing a cooling medium. Bumps are cast in the surface on the cooling side of the shroud. A surface coating overlies the cooling side surface of the shroud, including the bumps, and contains cooling enhancement material. The surface area ratio of the cooling side of the shroud with the bumps and coating is in excess of a surface area ratio of the cooling side surface with bumps without the coating to afford increased heat transfer across the element relative to the heat transfer across the element without the coating.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}
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