Combined cycle gas steam turbine power plants 3rd edition is a comprehensive overview of the combined cycle power plant from a thermodynamic technical and economic viewpoint this new edition gives readers the latest technological developments and practical examples from existing state of the art combined cycle plants. 40 ocombined cycle gas steam turbine power plants 3rdedition considerations it is generally better to burn the fuel directly in a modern gas turbine rather than in the hrsg because the temperature level at which heat is supplied to the process is higher gt versus st process in table 4 1. The combined cycle gas and steam turbine power plant presents three main pieces of equipment gas turbines steam turbines and heat recovery steam generator hrsg in case of hrsg failure the . Taken together withits simplicity and short start up time to full load the gas turbine is anattractive peak load machine steam power plants are more expensive than combined cycle powerplants a coal fired plant for example costs approximately two timesmore than a combined cycle plant with the same output