A study on effects of mass flow rate and compressor pressure ratio on gas turbine cycle performance

Ali Kamranpey

Abstract

Gas turbines are rotating machines that work based on the energy of gases from combustion. Each gas turbine includes a compressor to compress air, a combustion chamber to mix air with fuel and ignite it, and a turbine to convert the energy of the hot, compressed gases into mechanical energy. Gas turbines have many advantages over steam turbines, such as small volume, quick installation, quick start-up, easy operation and the possibility of using different fuels in them. For this reason, in the last twenty years, the production of this type of turbines has increased twenty times. Researchers have always tried to increase the efficiency of the gas turbine by studying the gas turbine cycle and its individual components and parameters. The purpose of this research is to investigate mass flow rate and compressor pressure ratio on gas turbine performance. The results showed that with the increase in mass flow rate, the net work of the cycle increases with a constant slope. Also, the results showed that the increase in the compressor pressure ratio has a direct effect on the work of the compressor, the work of the turbine and the net work of the cycle and causes them to increase, which is more intense at the beginning, but after a specific range it is less intense. In addition, the results showed that by increasing the compressor pressure ratio from 8 to 20, the gas turbine cycle efficiency increases from 40% to 60%. The results of this research lead to a better understanding of the effect of thermodynamic parameters on the gas turbine cycle and can help researchers to find optimal conditions.

A study on effects of mass flow rate and compressor pressure ratio on gas turbine cycle performance

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