Akademik Veri Yönetim Sistemi
Journal of Thermal Analysis and Calorimetry, 2025 (SCI-Expanded, Scopus)
In response to the increasing demand for energy efficiency and sustainability in marine applications, this study presents the design and thermodynamic analysis of a combined-cogeneration power plant integrated with an LM2500 gas turbine-powered naval ship. The proposed system aims to enhance operational efficiency, minimize fuel consumption, and reduce carbon emissions by leveraging waste heat recovery from the gas turbine exhaust. A comprehensive energy analysis is conducted to evaluate system performance under varying compressor pressure ratios (11.4–18.1) and steam extraction ratios. The results indicate that as the compressor pressure ratio increases, both net power output and overall system efficiency improve significantly, reaching a maximum of 23,233 kW and 60.28%, respectively. In addition, exergy analysis was conducted, revealing that the overall exergy efficiency of the proposed system is up to 0.419 with rising compressor pressure ratios, indicating reduced irreversibility and improved utilization of the fuel’s available energy potential. However, fuel savings and emission reductions exhibit a decreasing trend at higher pressure ratios, highlighting the diminishing returns in energy conservation. The system achieves a maximum fuel savings of 552.009 kg h–1, a cost reduction of 684.492 USD h–1, and a CO2 emission reduction of 1749.871 kg h–1 at an optimal pressure ratio of 11.4. Furthermore, the obtained results are compared with data taken from naval surface ships, demonstrating strong agreement and validating the effectiveness of the proposed system. These findings underscore the effectiveness of combined-cogeneration cycles in naval propulsion systems, offering a promising pathway for enhancing sustainability, fuel economy, and mission endurance in marine operations.