Cooling systems for ultra-high temperature turbines.
This paper describes an introduction of research and development activities on steam cooling in gas turbines at elevated temperature of 1500 C and 1700 C level, partially including those on water cooling. Descriptions of a new cooling system that employs heat pipes are also made. From the view point of heat transfer, its promising applicability is shown with experimental data and engine performance numerical evaluation.
Yoshida
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Aircraft Propulsion Research Center, National Aerospace Laboratory 7-44-1 Jindaiji-higashi, Chofu, Tokyo 182-8522, Japan.