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Title: 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:
 [1];  [2];  [3];  [4];  [5]
  1. (Glenmont, NY)
  2. (Pownal, VT)
  3. (Simpsonville, SC)
  4. (Cincinnati, OH)
  5. (Lincoln City, OR)
Publication Date:
Research Org.:
General Electric Company (Schenectady, NY)
OSTI Identifier:
874499
Patent Number(s):
US 6402464
Assignee:
General Electric Company (Schenectady, NY) NETL
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}
}

Patent:

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