Charging performance Heat storage 2 Phase change materials 2 Porosity 2 Thermal conductivity 2 Alumina 1 Aluminum oxide 1 Charging period 1 Charging periods 1 Copper oxides 1 Energy 1 Energy-transport 1 Fins 1 Fins (heat exchange) 1 Fourier numbers 1 Heat conduction 1 Heat transfer media 1 Heat-conducting vertical partition 1 Heat-conducting vertical partitions 1 In-buildings 1 Innovative heat transfer 1 LHTES system 1 Latent heat 1 Latent heat storage system 1 Latent heat thermal energy storage systems 1 Melting behavior 1 Melting performance 1 Melting performance/charging performance 1 Metal foam 1 Metal foams 1