In this study, a numerical method is presented which allows the resolution of heat transfer equation for phase change material (PCM) wall where conduction and radiation heat transfer modes are involved. The method provides the temperature distribution in the medium and liquid-solid interface position.
The results obtained with this model are comparable to the experimental results using paraffin wax. The numerical results are slightly higher than that of experiment in the melt-front propagation, because of the assumption that neglect the back-reflection in liquid-solid interface and transmit into the solid phase.
The experimental result showed the phonomenon of inter-radiative heating in solid and back-melting. The absorptivity of solid surface was increased with the crganol red coloration about 1.6 times as large as that of white paraffin wax.