1733 Study on Evaporative Cooling System of Compressor for Micro Gas-turbine System

Abstract

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.