Thermodynamic Efficiency and Integration Strategies in Solar-Powered Building Electrical Systems

In the context of the global energy crisis and environmental shifts, solar energy, recognized for its cleanliness and renewability, has increasingly captured attention in the application within the architectural sector.As a significant portion of energy consumption, the electrification of buildings and their transformation towards green systems are crucial for energy saving and emission reduction.With technological advancements, solar-powered building electrical systems have emerged as a focal point of research.The core issues affecting their widespread application are the system's thermodynamic efficiency and integration strategies.Despite advancements in solar cell efficiency and device-level optimization, there remains a deficiency in system-level thermodynamic analysis and integrated optimization, limiting the efficiency and practicality of solar energy in construction.This study initiates with an energy and exergy analysis to delve into the thermodynamic efficiency of solar-powered building electrical systems, clarifying the efficiency of energy conversion and the irreversibility losses.Building on these findings, strategies for system integration and operational optimization are proposed, aiming for a comprehensive optimization of solar systems through the establishment of targeted design and operational standards.This research not only provides a theoretical foundation for enhancing the energy efficiency of solar systems but also offers practical guidance for designing and managing efficient, sustainable building electrical systems.