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

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874499

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

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1. Glenmont, NY
2. Pownal, VT
3. Simpsonville, SC
4. Cincinnati, OH
5. Lincoln City, OR

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.

• Research Organization: General Electric Co., Schenectady, NY (United States)
• DOE Contract Number: FC21-95MC31176
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 6402464
• OSTI ID: 874499
• Country of Publication: United States
• Language: English

Related Subjects

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/