ABSTRACT

Thermal diffusivity of eutectic formed in aqueous alkali chloride solutions (NaCl, KCl, RbCl and CsCl) was determined by temperature wave analysis (TWA) during the freezing thawing process of aqueous alkali chloride solution. An obvious change of thermal diffusivity in freezing thawing processes of eutectic was observed with the super-cooling phenomena for each alkali chloride solute. The rate of thermal diffusivity decrease during the eutectic melting in comparison to the total decrease from the solid to the liquid state was observed larger than that of the heat of fusion measured by DSC, especially in the dilute concentration. It was confirmed that thermal diffusivity was sensitively influenced by the highly structure of the coexistence of eutectic crystallization and ice.

Compounds

#	Formula	Name
1	ClCs	cesium chloride
2	H2O	water
3	ClNa	sodium chloride
4	ClK	potassium chloride
5	ClRb	rubidium chloride

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Phase	Method	#Points
POMD	1 2	Eutectic temperature, K ; Crystal - 1	Crystal - 1 Crystal - 2 Liquid Air at 1 atmosphere	DIROBS	1
POMD	3 2	Eutectic temperature, K ; Crystal of intercomponent compound 1	Crystal of intercomponent compound 1 Crystal - 2 Liquid Air at 1 atmosphere	DIROBS	1
POMD	4 2	Eutectic temperature, K ; Crystal - 4	Crystal - 4 Crystal - 2 Liquid Air at 1 atmosphere	DIROBS	1
POMD	2 5	Eutectic temperature, K ; Crystal - 2	Crystal - 2 Crystal - 5 Liquid Air at 1 atmosphere	DIROBS	1

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Thermal diffusivity of eutectic of alkali chloride and ice in the freezing thawing process by temperature wave analysis

Chen, N. J., Morikawa, J., Kishi, A., Hashimoto, T.

ABSTRACT