Abstract
The results of an experimental study of the melting rates of rods of ice, paraffin and Rilsan (polyamide 11) pressed against a spinning hot disk are reported. The observations are similar to those made with wood rods, the “fusion temperature” of which has been found close to 739 K. These results are in agreement with a theoretical study of the competition between the kinetics of thermal wood decomposition and heat transfer resistances inside and outside the wood. A second conclusion is that because of the heat fluxes that can be transferred in most of the experimental devices, it seems almost impossible to raise wood to temperatures greater than about 800 K; the direct experimental determination of wood pyrolysis reaction rate constants at temperatures above 800 K then appears impossible.
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