Effect of the Pressue Ratio in Gas Turbine for Power Generation: An Exergy and Thermodynamic Analysis

Abstract

This article presents the study of cycle efficiency, exegetical efficiency net work and exergy destroyed by components with the assistance of Power Cycle V.2.0 software, an academic program focused on the practical development of the learning of the power cycles whose language was developed in MATLAB. For the Brayton cycle case,the case studies were based on the behavior of the net work and the efficiency of the cycle with respect to pressure variation at different temperatures, In the same way, the exergy that destroys each component at different pressure ratios was studied, and finally, the exegetical and cycle efficiency at various ratios of pressure and temperature at the turbine inlet was analyzed. From these cases, it was obtained that the thermal efficiency increases as the pressure ratio and the temperature of the turbine inlet increases. This efficiency improves by approximately 12% compared to the initial conditions. On the other hand, a maximum net workload occurs when the pressure ratio is 10 and the temperature is at 1500 K. In addition, the turbine and the compressor were the most energy-destroying components in most cases.