Abstract
For the global warming solution, no-emission systems should be discussed for environment - friendly power stations. A closed cycle system was designed as the application of gas engine - gas turbine combined cycle and proposed as one of no-emission technologies. This system has the working fluid of CO_2-H_2O mixture and is expected to have a potential high performance as a future power system. In order to be free from fossil fuel, a wood derived gas fuel was utilized and the system performance was compared with the LNG firing system. Both of these systems have the thermal efficiency of around 60 %LHV, high enough with fuel flexibility.
