A Comparison Of Packed-Bed Flow Topologies For High-Temperature Thermal Energy Storage Under Constrained Conditions - 2023/2024

The study “A Comparison of Packed-Bed Flow Topologies for High-Temperature Thermal Energy Storage Under Constrained Conditions” analyzes various packed-bed configurations for thermal energy storage in concentrated solar power plants. It compares conventional cylindrical, truncated conical, and a novel radial flow design, evaluating their performance under restricted operating conditions. The use of natural materials or industrial by-products as filler makes these systems economically attractive and sustainable.

Results show that the radial flow design can reduce thermal losses by up to 63% compared to traditional designs, although it presents limitations in power delivery duration due to thermocline dispersion. Conversely, conventional designs are up to 54% more cost-effective in terms of stored energy. Parametric analysis reveals that adjusting charge and discharge temperatures improves the utilization factor, while optimizing for lower costs and exergy losses enhances overall efficiency. In conclusion, each topology offers distinct advantages and trade-offs, and the choice depends on whether efficiency, cost, or operational stability is prioritized in high-temperature thermal storage applications.

Program: Article Editing, Translation and Review Call 2023

Project Duration: 12 months

Principal Investigator: José Miguel Cardemil Iglesias