Thermodynamics Modelling And Performance Assessment Of Gas Turbine Power Plant
DOI:
https://doi.org/10.37628/jiegt.v1i1.110Abstract
In this study, thermodynamics modelling of gas turbine engine is performed based on thermodynamic relations. The thermodynamic model reveals that the influence of operating parameters including the compression ratio, turbine inlet temperature and ambient temperature has significant effect on the performance of gas turbine engine. Energy and exergy analyses were conducted to evaluate performance of the selected power plant and to assess the effect of operating parameters on energy loss and exergy destruction in the plant. Energy analysis shows that the turbine has the highest proportion of energy loss (31.98%) in the plant. The exergy analysis results reveal that the combustion chamber is the most exergy destructive component compared to other cycle components. In addition, it was found that increase in the gas turbine inlet temperature (GTIT) decreases the exergy destruction of this component. The effects of design parameters on exergy efficiency show that an increase in the compression ratio and TIT increase the total exergy efficiency of the cycle due to a rise in the output power of the turbine and a decrease in the combustion chamber losses. The overall exergetic efficiency of the plant decreased with increased ambient temperature. It was found that a 5 K rise in ambient temperature resulted in a 1.03% decrease in the overall exergetic efficiency of the plant. Based on the results of this research work, the possible economical methods and technologies to improve performance of the selected gas turbine power plant are suggested. Key words: Thermodynamics model, energy analysis, exergy analysis, ambient temperature, gas turbine engine, simulationReferences
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