Journal
APPLIED THERMAL ENGINEERING
Volume 51, Issue 1-2, Pages 413-424Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2012.09.003
Keywords
Fogging; Hot day; Gas turbine; Heat recovery steam generator; Combined cycle power plant
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The present study deals with thermodynamic and thermo-economic analysis of simple combined cycle power plant (CCPP), incorporated with gas turbine (GT) blade cooling by means of bleeding of compressed air, and compressor inlet air cooling by means of fogging. This study has been carried out for five configurations, namely, simple gas turbine combined cycle using single pressure heat recovery steam generator (HRSG), that is, (SGTCC1P), simple gas turbine combined cycle using double pressure HRSG (SGTCC2P), simple gas turbine combined cycle using double pressure HRSG with reheat (SGTCC2PR), simple gas turbine combined cycle using triple pressure HRSG (SGTCC3P) and simple gas turbine combined cycle using triple pressure HRSG with reheat (SGTCC3PR), considering the hot day condition(HDC) at ambient temperature of 40 degrees C and relative humidity of 50%. The thermodynamic analysis has shown that SGTCC3P configuration of simple CCPP incur lowest operating cost per kWh power generation as determined in Fig. 19. This is obvious as evident in the Figs. 5, 6 and 9 of the thermodynamic analysis which show that for a given operating range of GTIT and C-pr, SGTCC3P configuration provides highest specific work and efficiency among all configurations. (C) 2012 Elsevier Ltd. All rights reserved.
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