Alumina 1 Aluminum oxide 1 Charging performance 1 Copper oxides 1 Fins 1 Fins (heat exchange) 1 Fourier numbers 1 Heat storage 1 LHTES system 1 Latent heat 1 Latent heat storage system 1 Latent heat thermal energy storage systems Melting behavior 1 Melting performance 1 Melting performance/charging performance 1 Metal foam 1 Metal foams 1 Metal nanoparticles 1 Metals 1 Nano PCM 1 Nano phase change material 1 Nano-phase change 1 Natural convection 1 PCM 1 Phase change materials 1 Porosity 1 Storage (materials) 1 Temperature distribution 1 Thermal conductivity 1 Volume fraction 1