基于光谱分束聚光光伏热与双级有机朗肯循环集成系统的㶲与能量参数评估

Abstract As fossil energy reserves diminish and environmental concerns grow, there is increasing interest in solar-based combined heating and power systems. The organic Rankine cycle is a promising technology for efficiently converting heat from concentrated photovoltaic thermal systems into power. This study hypothesizes integrating a spectral beam splitting concentrated photovoltaic thermal system with the recent organic Rankine cycle advancements, the two-stage organic Rankine cycle, noted for its straightforward architecture and enhanced power outputs to optimize solar energy utilization for both electricity generation and thermal power. The aim is to explore the influence of key design factors on each subsystem’s performance using EES and MATLAB, assessing the integrated system under various atmospheric conditions. The model’s accuracy was confirmed by comparing the results of the two sub-systems to previously published data. The findings indicate that the total electrical efficiency increases from 8.98 % to 16.94 % as solar irradiance rises from 600 W/m 2 to 1000 W/m 2 , leading to an overall efficiency improvement of 57.94 %. The integrated system can produce 2.14 kWh/day/m 2 of electrical power and 6.17 kWh/day/m 2 of thermal power, achieving a heat-to-power ratio of approximately 2.83, comparable to conventional systems. The research will yield actionable insights that can be utilized to enhance the design and performance of the system.