Preparation, characterization and thermal properties of fatty acid eutectics/bentonite/expanded graphite composites as novel form-stable thermal energy storage materials

The temperature curves of the CPCM3 and CPCM6 in melting and solidifying processes are shown. The heat storage time initiates from the same temperature (23 °C) and ends at the same melting temperature (72.5 °C). The interval starts from 70 °C and finishes at the same solidifying temperature (26.5 °C) in solidification period. The heat storage time of the CPCM3 and CPCM6 were 11 min and 8.7 min respectively. The heat release time of the CPCM3 and CPCM6 were respectively 68 min and 42 min108