Measurement of Thermal Diffusivity by Development of Simple Test RIG

Abstract

An experimental method of measuring thermal diffusivity of liquid samples has been developed. Now a days the transient techniques have achieved popularity over the conventional steady state methods because the transient technique requires much less precise alignment, dimensional knowledge, short measuring time and stability. Also, with the proliferation of modern computer based data acquisition systems, it is possible to design a strategy for accurately computing thermophysical properties from the measured temperature data. Hence, to find out thermophysical properties experimentally, in this paper a simple and reasonably accurate test rig has been developed and described. This can be fabricated with simple and basic equipments available almost everywhere.