The output and generating efficiency of gas turbine reduces with the increase of ambient temperature

which can be solved through cooling the inlet gas.On this basis

this paper proposed a novel inlet gas cooling method

which uses an ejector refrigeration system driven by the exhaust gas heat from the microgas turbine.Calculation results show that

this system is available to reduce the inlet gas temperature and improve the performance of gas turbine in a high temperature and high humidity ambient.In Shanghai region

the output power of the gas turbine can be increased by about 15.3% during a typical summer day.Correspondingly

the relative increase in power generation efficiency is up to 7.0%to 9.4%.This research can provide the references for design and operation of the micro gas turbine inlet air cooling system.