Akademik Veri Yönetim Sistemi
Applied Thermal Engineering, cilt.290, 2026 (SCI-Expanded, Scopus)
The growing impacts of global warming, together with the depletion of fossil fuels and increasing pressures on municipal waste management, have made renewable and waste to energy technologies more important than ever. In this context, this study examines a biogas-fueled, Brayton-based multigeneration system integrated with a proton exchange membrane electrolyzer to produce power, hydrogen, and useful heat simultaneously. In this regard, a parametric analysis was performed by creating a total of 10,800 designs for different operating parameters such as compression ratio, air humidity, power feeding rate, hydrogen feeding rate, excess air, and current density. The system was optimized through two different perspectives using mult-criteria decision-making analysis. For hydrogen generation aimed perspective, the power generation, hydrogen generation, heat generation, net present value, energy and exergy efficiency of the system are 581.55 kW, 0.000034 kmol/s, 10815.12 MJ/day, 2,19 US$, 45.39% and 51.28%, respectively. For power generation aimed perspective, the power generation, heat generation, net present value, energy and exergy efficiency of the system are 581.57 kW, 10815.13 MJ/day, 2,18 US$, 45.38% and 51.22%, respectively. Compared to a conventional biogas-fueled Brayton cycle, these values correspond to an improvement of 30.92% and 48.85% in energy and exergy efficiency, respectively.The end-of-combustion product temperature of the system was obtained as about 1209 K. Thanks to the obtained heat, it is possible to meet the hot water needs of the 575 residences in the summer months and to meet both the hot water and heating needs of the 286 residences in the winter months.