Investigation of Thermofluid Processes in a PCM Based Thermal Storage Module
Abstract
Latent heat thermal energy storage systems can capture and store solar thermal energy, enhancing the reliability of solar energy by facilitating a continuous and consistent energy supply. However, phase change materials used in these systems suffer from low thermal conductivities making it difficult to achieve suitable charging and discharging rates. The present research investigated this issue using computational and experimental approaches to improve the design of a thermal storage module through heat transfer enhancement. Various heat transfer enhancements including a finned honeycomb structure, and metal wool were incorporated into a thermal storage module to analyze their effect on charging and discharging rates. The findings revealed that a finned aluminum honeycomb structure was the most effective in enhancing the overall module performance as it promoted natural convection within small, localized cells which was determined to be extremely effective. The results presented in this study contribute to a deeper understanding of the optimal design for thermal storage modules.