Enhanced heat transfer surface for cast-in-bump-covered cooling surfaces and methods of enhancing heat transfer

Title: Enhanced heat transfer surface for cast-in-bump-covered cooling surfaces and methods of enhancing heat transfer

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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:

Chiu, Rong-Shi Paul ^[1]; Hasz, Wayne Charles ^[2]; Johnson, Robert Alan ^[3]; Lee, Ching-Pang ^[4]; Abuaf, Nesim ^[5]

Glenmont, NY
Pownal, VT
Simpsonville, SC
Cincinnati, OH
Lincoln City, OR

Publication Date:: 2002-01-01

Research Org.:: General Electric Co., Schenectady, NY (United States)

OSTI Identifier:: 874499

Patent Number(s):: US 6402464

Assignee:: General Electric Company (Schenectady, NY)

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.

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                    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.

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                    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.

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@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          = {},

  url          = {https://www.osti.gov/biblio/874499},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2002},

  month        = {1}

}

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