Solid heat-energy graph

In Fig.1.1, is shown as a function of T/e where the Einstein temperature 0g is an abbreviation for hw /kg is zero at T = 0 and rises asymptotically to the Dulong-Petit value 3R when T >>0. For high temperatures, therefore, quantization is unimportant and the specific heat has the same value as if each degree of freedom of the system had energy kgT/2 at lower temperatures, however, there is a pronounced deviation from the law of equipar-tition. According to PAIS [1.4], Fig.1.1 is the first graph dealing with the quantum theory of solids. 

The effect of wall thermal conductivity is pronounced at high inlet velocities, where increased efficiency is observed in the case of high solid thermal conductivity, as seen in Fig. 5.5 pertaining to U-m = 3.7 m/s. In this graph, axial profiles of the energy heat balance terms in the solid are provided in terms of all modeled heat transfer modes heat generated via reactions on the surface, heat convected to the... 

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