engleski

Experimental Benchmark for High Temperature Latent Energy Storage Modeling

High-temperature latent heat storages are considered one of the best technologies for a large-scale energy storage and could play significant role in development of the 100% renewable energy systems. Despite number of advantages, its commercial application is limited by its main drawback – very low thermal conductivity of phase change material (PCM).In this work, both numerical and experimental approach is used to develop, implement and validate numerical model of high temperature phase change. Model can be used for accurate and robust analysis of the high temperature latent heat energy storages. It is based on the finite volume approach and enthalpy-porosity method for modeling of the phase change. Conjugate heat transfer between heat-exchanger and PCM is implicitly modeled.Experimental setup for both direct melting front propagation acquisition and temperature measurements during the high temperature melting (sodium nitrate) inside the large storage was developed. By using three distinct experiments numerical model was successfully validated.

Visokotemperaturni spremnici latentne topline ; Numerički model, Validacija

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