| Abstrakt: |
ABSTRACTIn this study, a simple and inexpensive T-hproperty measurement method was proposed for measuring the temperature and specific enthalpy of a flat plate phase change material (PCM) by cooling and heating it under adiabatic conditions on one side and 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 reducing the thickness of the sample installed in the equipment with low heat flux. The experimental results demonstrated that the T-hproperties can be measured under quasi-steady conditions of cooling and heating. In addition, the PCM, which was measured as the hysteresis occurring between cooling and heating using differential scanning calorimeter (DSC) measurements, was measured using this system. The results showed that the T-hcharacteristics 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 measure in the DSC results. Furthermore, it was confirmed that this equipment had sufficient measurement accuracy; accordingly, it was possible to measure the thermal properties of the PCM relatively accurately. |
