Parametric Simulation of Combined Cycle Power Pant: A Case Study

Authors : T. SRİNİVAS, B. V. REDDY, A. V. S. S. K. S. GUPTA

Pages : 29-36

View : 12 | Download : 9

Publication Date : 2011-02-01

Article Type : Research Paper

Abstract :In this work a thermodynamic evaluation has been carried out on an existing actual combined cycle plant insert ignore into journalissuearticles values(LANCO power plant); having a triple pressure heat recovery steam generator insert ignore into journalissuearticles values(HRSG);. In this case study, an attempt has been made to improve the efficiency of the plant through a parametric study using a thermodynamic model. The compressor pressure ratio is evaluated from the terminal temperature difference at HRSG inlet instead of an initial regular fixation. The low pressure insert ignore into journalissuearticles values(LP); and the intermediate pressure insert ignore into journalissuearticles values(IP); in HRSG also evaluated from local flue gas temperatures with minimum temperature difference in heaters without initial fixation. The optimized results obtained at high pressures insert ignore into journalissuearticles values(HP); of 90 and 200 bar are compared with the design results of the plant. The optimum pressures obtained for deaerator, LP and IP heaters at 200 bar of HP pressure are 3.7, 8.3 and 26.5 bar respectively.
Keywords : Combined cycle, pinch point, thermodynamic analysis, triple pressure