Abstract
In this study, a simple and inexpensive T-h property measurement method was proposed for measuring the temperature and specific enthalpy of a flat plate PCM by cooling and heating it under adiabatic conditions on one side and a constant heat flux from the opposite side. Experiments were conducted by choosing the temperature on the adiabatic side, which is less affected by the heat transfer surface, as the representative temperature of the PCM, and thinning the thickness of the sample installed in the equipment with low heat flux. The experimental results showed that the T-h properties could be measured under quasi-steady conditions of cooling and heating of the PCM. In addition, the PCM, which is measured as the hysteresis occurring between cooling and heating in DSC measurements, was measured using this system. The results showed that the T-h properties of cooling and heating were almost identical, except for the supercooling phenomenon, and that it is possible to measure supercooling and its cancellation phenomenon, which is difficult to observe in DSC result.
