Adiabatic method
Determination of specific thermal capacities depending on the temperature

The principle behind the method of measuring thermal capacities by adiabatic calorimetry, i.e. without heat exchange with the external environment, was described by M. Diot, [R 2 970] des Techniques de l'Ingénieur. This technique can be used relatively easily for a temperature range from ambient to 150°C. Above this temperature, the difficulties are considerable, and only equipment developed in research laboratories is used. As far as adiabatic methods are concerned, the difficulties arise from the fact that a calorimeter...