To increase the heat capacity in lightweight construction materials, a phase change material (PCM) can be introduced to building\nelements. A thermally activated building system (TABS) with graphite/PCM concrete hollow core slab is suggested as an energy efficient\ntechnology to shift and reduce the peak thermal load in buildings. An evaluation of heat storage and dissipation\ncharacteristics of TABS in graphite/PCM concrete has been conducted using dynamic simulations, but empirical validation is\nnecessary to acceptably predict the thermal behavior of graphite/PCM concrete. This study aimed to validate the thermal behavior\nof graphite/PCM concrete through a three-dimensional transient heat transfer simulation.The simulation results were compared to\nexperimental results from previous studies of concrete and graphite/PCM concrete.The overall thermal behavior for both materials\nwas found to be similar to experiment results. Limitations in the simulation modeling, which included determination of the indoor\nheat transfer coefficient, assumption of constant thermal conductivity with temperature, and assumption of specimen homogeneity,\nled to slight differences between the measured and simulated results.
Loading....