Renewable energy-based daytime/nighttime electric power and heating/cooling production using a novel framework of supercritical Brayton cycle, Organic Rankine Cycle, parabolic trough solar collector, and biomass

This research proposes an energy analysis of a novel hybrid system combining the Organic Rankine Cycle (ORC), Supercritical Brayton Cycle (SBC), Parabolic Trough Solar Collectors (PTC), and Biomass. The system is designed to generate both electric power and heating using only renewable energy sources, operating efficiently during both daytime and nighttime. Solar energy is harnessed by the PTC during the day, while biogas provides backup energy during the night. The system’s configuration includes a Heat Recovery Steam Generator (HRSG) unit, which transfers exhaust heat from the SBC to the ORC. A detailed sensitivity analysis is conducted to evaluate the impact of key parameters, such as pressure ratio, turbine isentropic efficiency, and temperature at the source, on the system's performance. The results indicate that the first law efficiency of the system is approximately 43 %, with a total power generation of around 120 kW. The findings highlight the system’s potential for providing sustainable energy solutions by efficiently combining solar and biomass resources for power generation and heating, marking a significant advancement in hybrid renewable energy systems.