Thermal properties and reliabilities of myristic acid–paraffin wax binary eutectic mixture as a phase change material for solar energy storage
2022; Royal Society of Chemistry; Volume: 12; Issue: 20 Linguagem: Inglês
10.1039/d1ra09238c
ISSN2046-2069
AutoresZhixuan Fan, Yunchao Zhao, Xuying Liu, Yu Shi, Dahua Jiang,
Tópico(s)Adsorption and Cooling Systems
ResumoIn this work, a myristic acid (MA)-paraffin wax (PW) binary eutectic phase change material (PCM) was prepared by a melt-solution blending method. The eutectic point of the MA-PW binary system was determined to be 62 wt% MA-38 wt% PW using a cooling curve. In addition, the phase transition properties and thermal stability of MA-PW binary eutectic PCM were investigated by differential scanning calorimetry (DSC) and thermogravimetry (TG) analysis. The melting temperature and latent heat as well as starting temperature of decomposition for MA-PW binary eutectic PCM were 41.99 °C, 171.43 J g-1 and 137.86 °C, respectively. Besides, analysis of the chemical and crystal structures of MA, PW and MA-PW revealed no chemical reaction between MA and PW to produce a new molecular structure and no change in the crystal structure. Finally, MA-PW binary eutectic PCM still has good thermal properties and chemical stability after 500 cold-hot cycles.
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