Exergy Analysis of Garri (1) Power Plant

Abstract

The objective of this research is to presents an engineering design and theoretical exergetic analysis of the GARRI 1 combined cycle power plant. Exergy analysis has been performed based on the first and second laws of thermodynamics for power generation system. Expressions involving the variables for specific power-output, thermal efficiency, exergy destruction in components of the combined cycle, second-law efficiency of the gas-turbine cycle, and second law efficiency of the steam power cycle have been derived, excel has been used for calculation. The results show the exergy analysis for a steam cycle system predicts the plant efficiency more precisely. To evaluate the energy utilization, 100% load for plant using two kinds of fuel light diesel oil and liquefied petroleum gas and 66% load light diesel oil have been analyzed, so the plant second law efficiency when using LPG is 64.35 % which is better than LDO with 64.04 %. The plant efficiency for partial load operation is 61.6% which is lower than full load operation.