Proposal and fundamental demonstration of chemical gas turbine system

A new concept of a gas turbine/steam turbine combined cycle system. referre d to as the ''Chemical Gas Turbine" system, is proposed in order to raise t he total thermal efficiency of existing systems. The characteristics of thi s system are a combustor operating under fuel rich conditions, and C/C comp osites material adopted for fabrication of the turbine blade. This system c onsists mainly of two gas turbines and a steam turbine, and has advantages that exergy loss and total NOx products are decreased by means of fuel-rich combustion. The purpose of this work is to demonstrate the advantage of the chemical ga s turbine system. and the thermal efficiency of this system and total NOx p roducts are simulated. Besides, we convert a commercial small-scale gas tur bine into the micro chemical gas turbine, and develop combustor for fuel ri ch combustion of methane-air and related equipment. After that, we examine the fundamental working characteristics of the assembled system. The result s show th feasibility of such a chemical gas turbine system.