Geometric optimization of a phase-change energy storage operating with a PV micro-installation
DOI:
https://doi.org/10.36119/15.2022.7-8.3Keywords:
phase-change material energy storage, computational fluid dynamics, photovoltaic micro-installation, enthalpy-porosity modelAbstract
Currently, efforts are being made to increase the share of renewable energy sources in Poland’s energy mix. Energy storages, both electric and thermal, can help to overcome the disadvantages of these energy sources. A latent heat store designed to cooperate with a photovoltaic micro-installation and a cooling system was selected for testing. A numerical model of the heat storage was made and a series of numerical calculations of the charging and discharging of the heat accumulator was carried out for different geometries of the phase change medium. The processes of solidification and melting were modelled using an enthalpy-porosity approach. The obtained results were illustrated on the summary characteristics. It is shown that the shape of the phase change medium has a significant effect on the dynamics of the phase change process.
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