Studies on Phase Change Characteristics of Binary Mixtures of Erythritol and MgCl_2・6H_2O

概要

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This study investigated a novel idea of combining an organic component erythritol with an inorganic component MgCl2·6H2O to prepare new PCMs suitable for domestic water heating. A DSC analysis indicated that mixtures containing less than 20 wt% MgCl2·6H2O have melting temperatures above 353 K and latent heat values greater than 120 kJ/kg. Thermal cycling of erythritol-based PCMs in test tubes showed good stability in terms of nucleation temperature. However, the erythritol-based PCMs were found to undergo supercooling of about 50 K below the melting temperature, similar to erythritol. An analysis of the distribution of the salt hydrate component in the solid phase in a scale-up experiment revealed the salt hydrate’s possibility of accumulating at the bottom of the unit. The effect of ultrasonic irradiation on prevention of component segregation was also demonstrated.
社団法人化学工学会の論文
2007-01-01