Evolution of Spanwise-Hole Blade Cooling in Industrial Combustion Turbines PUBLIC ACCESS

[+] Author Affiliations
G. L. Whidden, W. E. North

Westinghouse Electric Corporation, Orlando, FL

Paper No. 92-GT-397, pp. V004T10A024; 6 pages
  • ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration
  • Cologne, Germany, June 1–4, 1992
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7896-5
  • Copyright © 1992 by ASME


The evolution of the spanwise-hole blade cooling technique is described from its employment in the original blade cooling design of the late 1960’s to its current applications in modern industrial combustion turbines. Descriptions of the design, along with analytical and manufacturing advances which have enabled this technique to remain competitive at higher firing temperatures with the relatively complex designs are included. Verification of the spanwise cooling hole designs by means of pyrometer testing is also presented.

Copyright © 1992 by ASME
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