Natural Convection Melting Influence on the Thermal Resistance of a Brick Partially Filled with Phase Change Material

The constant growth of urban agglomerations with the development transport networks requires optimal use energy and new ways storing it. Energy efficiency is becoming one main challenges modern engineering. phase change materials in construction expands possibilities accumulating solar energy, as well reducing consumption. In this study, we consider problem effect natural convection on heat transfer a building block containing material. Heat transfer, taking into account melting brick, was analyzed at various temperature differences. mathematical model formulated form time-dependent equations conjugate using non-dimensional stream function, vorticity, temperature. describing melting, convection, were solved finite difference method. Smoothing parameters used to describe transitions As result calculations, local characteristics mass points time obtained, changes profiles side surfaces. It shown that large volume melt, increases loss by more than 10%.