1733 マイクロガスタービン用遠心圧縮機における水噴霧冷却効果の解析(S19-7 流体機械に関連した流動現象とその解析・計測(7)流体機械に関連した諸問題,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

抄録

The injection of water droplets is one of the most effective ways to improve the performance of gas turbine systems. This cooling method has been applied to large-scale gas turbine systems and been expected as a powerful technology for improving the efficiency also of micro gas turbine (MGT) systems. The present study aims at establishing a water injection cooling system for the flow in the centrifugal compressor installed in MGT system. This paper provides a method of utilizing ultrasonic humidifier to produce and introduce fine water droplets into the impeller, and evaluates the validity of the proposed cooling method for improving the compressor performance, by conducting a series of experiments.