Harnessing Coconut Shell Carbon Micro Particles For Enhanced Optical Absorbance And Sustainable Energy Storage In Organic Phase Change Materials

Abstract

Initiation of heat energy absorb, and release depends on the surrounding temperature and phase transition temperature of PCM. Nevertheless, the commonly hindered practical issue of PCMs is poor optical absorbance, fluctuation in energy storage and low thermal conductance. The current research aimed to assess the chemical constancy, improve the optical absorbance, decrease the optical transmittance & to analyse the variation in melting enthalpy of organic PCM functioning at 50 degrees C via dispersion of coconut shell biochar-based carbon micro particles (CSCMPs). The synthesized CSCMPs are dispersed within the PCM matrix at weight fraction of 0.2%, 0.4%, 0.6%, 0.8% and 1.0% via meltingblending-sonication process. The developed composite organic PCMs are analysed with a series of material characterization experiments by employing Fourier Transform Infra-Red spectroscopy (FTIR), Ultraviolet visible spectroscopy (UV-Vis), and differential scanning calorimeter (DSC). Results ensure, chemical stability, improved optical absorbance by 63.6%, decreased optical transmissibility by 64.3%; and surge in energy storage ability from 158.2 J/g to 190.1 J/g. The findings also provide valuables information towards design and improvement of composite PCM materials for various thermal regulation application from buildings to electronic devices