Design and experimental testing of a radial packed bed for thermal energy storage using copper slugs as the storage medium - 2024/2024

This study presents an innovative approach to thermal energy storage for high-temperature applications. The system is based on a radial packed-bed configuration, which improves airflow distribution and reduces pressure losses compared to axial designs. Copper slugs are used as the storage medium due to their high thermal conductivity and heat transfer capacity. Experimental tests show fast charging and discharging times, with a more defined and stable thermocline.

The radial design allows for better volume utilization and greater energy transfer efficiency. Additionally, the geometry promotes temperature uniformity within the bed, reducing thermal gradients that affect system durability. The results confirm the viability of this configuration for concentrated solar power plants and energy backup systems. In conclusion, the use of copper in a radial packed bed represents an efficient, compact, and robust alternative for high-density thermal energy storage.

Program: FONDEF

Project Duration: 24 months

Principal Investigator: José Miguel Cardemil Iglesias