Paper presented at the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.
Nowadays the Integrated Solar Combined Cycle Power Plants (ISCCPPs) have an important role in efficient power generation especially at desert areas. Thermodynamic cycle development and integration are among the possible ways to enhance performance of power plants. In this study attempt will be made to investigate the effect caused by GT inlet Fogging to ISCCPP based on the average ambient condition. Recovery of HRSG blow down concerning cool down, as input to GT Inlet fogging will present as economic idea to enhance efficiency of overall cycle. Moreover, Exergy and performance of plant calculated to shows irreversibility of each part of Solar Combined Cycle including Compressor, GT, HRSG, Solar field and ST with different effectiveness of inlet fogging system. The Yazd 467 MW ISCCPP that located at desert area on Iran has been selected as large-scale applications study. The results show that the most exergy destruction in the ISCCPP occurs in the combustion chamber, HRSG, collectors, turbine, and solar field due to its high irreversibility