Thermodynamic Analysis of Combined Cycle Power Plant Fired with Ammonia

Ammonia is a perspective carbon-free fuel that can be used in gas turbines.In this paper, the concept of ammonia fed combined cycle power plant (CCPP) with chemically recuperated gas turbine (CRGT) is provided.The effect of operating parameters such as temperature, pressure and pressure ratio on the efficiency of combined cycle power plant is determined.The comparative analysis of CCPP with traditional gas turbine and chemically recuperated gas turbine is provided.The results of the thermodynamic analysis show that efficiency of CCPP with CRGT is significantly higher (up to 5.5%) than efficiency of CCPP with a conventional gas turbine without thermochemical exhaust heat recuperation.The ratio between the work output from steam turbine and gas turbine is determined to show that in CCPP with CRGT the higher amount of heat is used in gas turbine cycle.This ratio is 2-7% higher than for CCPP with simple gas turbine without exhaust heat recuperation.