Geometric optimization of a phase-change energy storage operating with a PV micro-installation
author:
DOMINIKA PORWISIAK, ZIEMOWIT MALECHA
ORCID ID:
0000-0003-0340-2227, 0000-0001-8560-760X
No:
7-8/2021 Instal p. 29-32
DOI:
DOI 10.36119/15.2022.7-8.3
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.
Keywords:
About Authors:
BEng Dominika Porwisiak https://orcid.org/0000-0003-0340-2227, DSc Ziemowit Malecha https://orcid.org/0000-0001-8560-760X –
Wroclaw University of Science and Technology, Department of Cryogenics and Aerospace Engineering, Wroclaw, Poland. Corresponding author: ziemowit.malecha@pwr.edu.pl