マイクロガスタービンを用いた水とエタノールの混合液滴噴射による性能解析

抄録

This study is related to water injection on a micro gas turbine engine. Water injection tests have been carried out for a CapstoneC30 micro gas turbine. According to experimental results, water injection tends to cause the decrease of combustion efficiency because water is unburnable fluid. The decrease of combustion efficiency leads to the reduction of power output. Therefore, it can be considered that ethanol is valid fluid because of its combustibility. Then, water-ethanol mixture injection tests have been conducted for a CapstoneC30 micro gas turbine. Ethanol content has been varied from 20% to 60%. The results of water-ethanol mixture injection tests have been compared with the results of water injection. A model has been developed to investigate the evaporation behavior of water-ethanol droplets under micro gas turbine environments. The variation of air temperature and droplet diameter along flow path have analyzed for the water-ethanol mixture injection in the Capstone C30 micro gas turbine.