Performance comparison and entropy generation of simple gas turbine with hybrid power cycle

Abstract

Traditional gas turbines are utilized to generate electricity, however, there is a need for alternate power cycle arrangements because of their low efficiency and high emissions. The use of a hybrid configuration may address this. To increase efficiency and lower emissions, a high-temperature fuel cell is integrated with a conventional gas turbine during hybridization. The electrochemical model of the fuel cell is confirmed with the published work at 1023 K. In the end, it was found that in both layouts, the combustion chamber produces the most entropy. Additionally, it has been shown that the components' departure temperatures affect how much entropy is generated. The thermal efficiency of the hybrid cycle is 61.46 % at pressure ratio 4 and turbine inlet temperature 1250 K, and exergy efficiency is 57.98 %.