Exergy and Energy Analysis of 150 MW Gas Turbine Unit: A Case Study

Abstract

A study of the energy and exergy analysis of a 150 MW gas turbine plant was performed using Dataflow sheet Kirkuk unit. Applying the first and second law of thermodynamics across each component of the unit to determine losses have been used. The results showed that the first law efficiency in the compressor, combustion chamber, turbine, and exhaust gases was 93.34%, 85.52%, 94.11%, and 42.32%, respectively. The results were represented by the Sankei diagram, while the second law efficiency in the compressor, combustion chamber, turbine, exhaust gases were 93.3%, 89.52%, 95.57%, and 82.34%, respectively. The outcome of exergy analysis was represented by a Grasmann diagram while the energy analysis was represented by a Sankey diagram.The total thermal efficiency of the unit was 33.069%, while the exergy efficiency was 32.397%.