Integration of Thermochemical Energy Storage with Solar Thermal Systems for Long-duration Applications
Keywords:
Energy density, Long-duration storage, Renewable energy integration, Seasonal storage, Solar thermal systems, Sorption storage, Thermochemical energy storage (TCES)Abstract
The intermittency of solar energy presents a major challenge for its large-scale and continuous utilization. Thermochemical energy storage (TCES) offers a promising pathway for long-duration energy storage due to its high energy density and near-zero heat loss over extended periods. This research investigates the integration of TCES with solar thermal systems, focusing on system design, material selection, and performance optimization for long-duration applications. A conceptual integrated system model is developed, incorporating solar collectors, thermochemical reactors, and energy recovery units. Simulation and analytical results demonstrate that TCES systems can achieve energy densities 2–10 times higher than conventional latent or sensible heat storage systems, with storage durations extending from days to seasonal scales. The study highlights key challenges, including reaction kinetics, heat and mass transfer limitations, and material degradation. The findings provide insights into enhancing system efficiency and reliability, positioning TCES as a critical technology for future renewable energy systems.
