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This study analyses the melting time and liquid fraction during melting of carboxylic (COOH) group functionalized Graphene-based paraffin wax (PW) Phase Change Material (PCM) inside a thermal energy storage system (TESS) both experimentally and numerically (using Ansys Workbench 15.0 academic version). Its performance in terms of time taken for melting during charging/melting analysis is compared numerically and experimentally which leads to a good conformance and validates this research. The average error in the melting times of experimental and numerical result is found to be 1.9 %, 2.0 % and 2.6 % for three different flowrates which shows a very good agreement between experimental and numerical simulation results.
Nagar et al. (Sat,) studied this question.