Assessment of Maisotsenko combustion turbine cycle with compressor inlet cooler

Abstract

In this study a Maisotsenko combustion turbine cycle (MCTC) with compressor inlet cooling system is proposed and studied through energy exergy and exergoeconomic analysis methods. The present system consists of a Maisotsenko air cooler a compressor a turbine a generator a combustor and a compressed air saturator. The results show that an exergy efficiency of 58.27 % is higher than the corresponding energy efficiency of 51.55 % for the MCTC system due to the fact that the exergy content of the fuel fed into the combustion chamber is lower than its energy content. Also the maximum exergy destruction rates occur in the compressor and turbine with the values of 166.964 kW and 150.864 kW respectively. Furthermore the exergoeconomic results indicate that the highest exergetic cost factor defined as the destruction in the component per cost is determined to be 0.013148 kW/$ for the turbine while the Maisotsenko cycle air cooler has a minimum rate of 0.000006 kW/$. The better optimization of this component may be considered. It is concluded that Maisotsenko cycle systems can be effectively integrated to turbine cycle systems. Also energy exergy and exergoeconomic analyses give more useful information together about assessing the MCTC system and minimizing the thermodynamic inefficiencies. © 2017 Elsevier B.V. All rights reserved.