常规㶲与先进㶲分析在一种耦合太阳能制氢与燃料电池集成的新型冷热电联产系统中的应用

Abstract With worsening global energy shortages and environmental pollution, there is an urgent requirement for efficient and clean energy systems to address these issues. This study aims to develop a high-performance combined cooling, heating, and power system by integrating multiple advanced technologies to improve energy efficiency and reduce environmental impact. This study integrates a spectrum-splitting solar photovoltaic/thermal hybrid system, methane dry reforming for hydrogen production, and a solid oxide fuel cell-gas turbine hybrid power generation system to achieve excellent thermodynamic performance. The study creates thermodynamic models for each component of the system, uses Aspen Plus for simulation to obtain thermodynamic parameters of all material and energy flows, and performs a comprehensive evaluation using both conventional and advanced exergy analyses. The results show that the system achieved an energy efficiency of 73.54 % with an electricity generation of 1.320 MW (accounting for 45.82 % of the total energy output); the conventional exergy efficiency was 37.62 %, with significant exergy destruction in photovoltaic cells (54.17 %), dual-effect lithium bromide-water absorption refrigeration system (65.71 %), solar collectors (37.16 %), and solid oxide fuel cells (35.63 %); advanced exergy analysis indicated that 14.28 % of the total losses were avoidable, among which the dual-effect LiBr-H 2 O absorption refrigeration system and solid oxide fuel cells had substantial avoidable endogenous exergy destruction (0.273 MW and 0.131 MW, respectively), making them key optimization targets. The study demonstrates that advanced exergy analysis was more effective than conventional methods in identifying avoidable exergy losses, establishing optimization hierarchies, and revealing improvement potentials, providing useful references for the optimization of integrated energy systems.