EXERGY ANALYSIS OF COMBINED CYCLE POWER PLANT

Abstract

Combined cycle power plants (CCPPs) have an important role in power generation as we are presently facing shortage of power both during peak and off peak hours. To improve the performance of the plant, first it is necessary to find out the equipment/locations where the losses are more and the same can be rectified by more attention to those equipments. Seven cases of different configuration have been considered to study the change in exergy destruction with modification in cycle using computer program made in engineering equation solver (version 7.929). In the first configuration only compressor, combustor and gas turbine have been taken. One regenerative heat exchanger is added in 2nd configuration followed by addition of intercooler in 3rd case and one re-heater in 4th case. Keeping 4th case as base, WHRB, steam turbine and condenser is added in the 5th case followed by an addition of one regenerative feed heater in 6th case and two regenerative feed heaters in 7th case. The exha...