Abstract
Numerous studies have recently focused on the utilization of abundant natural rocks as sensible heat storage materials in packed bed systems. However, there is limited knowledge on the use of mining by-products as filler material, and their applicability has yet to be thoroughly investigated. The focus of this research paper is to investigate the potential of a selected mining by-product known as "Porcellanite" as filler materials in a packed bed storage system. Several techniques were used to characterize this rock. Its structure and morphology were also determined, as well as its thermophysical and mechanical properties. Temperature variation’s effect on thermal capacity and thermal conductivity was also investigated. The thermal stability of rocks was also tested using thermogravimetric analysis up to 400°C. Obtained results prove the potential of the "Porcellanite" rocks" as storage material.
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