The Performance of Gas Turbine Heat Recovery System : Analysis of Part Load Performance

Abstract

A part load performance of gas turbine heat recovery system is analyzed from the standpoint of the second law of thermodynamics, using as the parameter a function of exergy. The characteristics of gas turbine at part load are estimated from the design point data and heat rate about some gas turbine. In this system, additional fuel supply to heat recovery boiler is made to meet the heat demand which exceeds the exhaust heat from gas turbine. The effect of additional fuel supply and the irreversible losses occurring in each process of the system are described.