Effect of porosity and grain size on heat storage coefficient of marble powder

In the literature [1-3] one finds very little importance attached to knowledge of the HSC of various materials. The heat storage coefficient characterizes a medium from the viewpoint of its heat storage ability. If we consider a section of the medium, then some of the heat entering is retained by it and the rest is transferred to subsequent layers. When the steady state is reached no heat is retained and all is transferred to the subsequent layers. It can be seen that during the transient state the heat retained by a particular layer is a function of its heat storage coefficient. It is well known that knowledge of the HSC is necessary in calculating the heat accumulating capability of a medium when in a transient state. A detailed account of the usefulness of knowledge of β is given in literature [4,5]. In terms of heat flow, it may be defined as the amount of flux flowing under unit temperature difference at an instant of 1/ π seconds. Its unit is 21 1/2 J mK s −− − or 21 1/2