Influence of BladeCooling on the Efficiency of Humid Air Turbine

Authors : Jan SZARGUT, Janusz SKOREK, İreneusz SZCZYGİEL

Pages : 21-26

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Publication Date : 2000-03-01

Article Type : Research Paper

Abstract :The influence of an open system blade cooling on the efficiency of the humid air turbine has been analyzed. It has been assumed that three stages of the turbine are cooled by means of compressed air taken from the outlet of the compressor. The thermodynamic analysis showed, that the deleterious impact of blade cooling results mainly from the irreversibility of mixing of cooling air with the working fluid. The influence of the blade cooling on the optimum operational parameters of HAT turbine insert ignore into journalissuearticles values(compression ratio, excess air, air humidity and preheated air temperature); has been analyzed too. This paper was presented at the ECOS’99 Conference in Tokyo, June 8-10, 1999 
Keywords : gas turbine, cooling of blades, humid air turbine