KAGAKU KOGAKU RONBUNSHU
Online ISSN : 1349-9203
Print ISSN : 0386-216X
ISSN-L : 0386-216X
Materials Engineering and Interfacial Phenomena
Interrelation between Degree of Melting Point Depression and That of Latent Heat Decrease in the System of Calcium Chloride Hexahydrate
Yasuyuki Watanabe
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2017 Volume 43 Issue 4 Pages 306-312

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Abstract

With a view to controlling the melting point and extending the temperature range for practical application of calcium chloride hexahydrate as a latent heat storage material, an attempt was made in the previous study to derive an empirical equation for the melting point depression by soluble additives (Watanabe and Hirasawa, 2017). In the present study, the effect of the same nine additives on the latent heat of fusion (measured value, 182 kJ/kg) was examined. As in the case of melting point depression, the latent heat of fusion decreased with increasing amount of additive, and the effect of each additive could be expressed numerically by a simple empirical equation. Further, a constant numerical relationship was found between the melting point depression and the latent heat decrease, regardless of the type of additive.

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© 2017 The Society of Chemical Engineers, Japan
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