Analysis of thermophysical properties of chicken eggshell an alternative phase change material

Abstract

Phase change materials are substances that utilize their ability to change phases for latent heat storage. PCM for energy storage must meet the parameters of thermophysical properties. One commonly used material is calcium chloride hexahydrate, which can be applied to reduce electricity consumption associated with air conditioning regulation. Meanwhile, eggshell waste containing calcium has not been maximally utilized. In this study, calcium derived from eggshells was processed into calcium chloride hexahydrate, which could potentially be an alternative to PCM. The preliminary results to get the thermal analysis in the form of the T-History method were done using the heating and cooling process of PCM with reference liquid. Based on the experimental results, it was challenging to determine the phase change occurrence in the eggshell derived PCM due to its unique texture. Consequently, the T-history test could not provide conclusive findings. Although a thin liquid layer was observed at the top of the PCM, it remained uncertain whether it indicated the melting process. Therefore, this material needs to be explored for improved processing methods to establish its potential as a sustainable PCM candidate.