EXPERIMENTAL STUDY OF PACKED BED OF STONES AT HIGH TEMPERATURE USING COPPER SLAG AS STORAGE MATERIAL
DOI:
https://doi.org/10.59627/cbens.2022.1241Keywords:
Thermal storage, Experimental study, Rock packed bed, Copper slagAbstract
Thermal energy storage has been shown to be highly beneficial when coupled to solar process heat and power generation systems. Currently, it is used in concentrated power plants using molten salt as storage material, but this technology has considerable drawbacks, as it can affect plant performance. Packed-bed storage using air as heat transfer fluid has been shown to be a competitive alternative, especially when industrial waste materials are used, allowing high storage performance. This study considers an experimental setup of a horizontal tank filled with copper slags, operating within the medium to high-temperature range, in a charge-discharge cycle. The results show that the high thermal capacity of the slags induces a high thermal inertia and energy density of the storage tank, without any inconvenience associated with the high thermal gradients.
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