Abstract
The present work includes the investigation of the thermophysical properties of three salt-hydrates (Na 2 S 2 O 3 ·5H 2 O, Zn(NO 3 ) 2 ·6H 2 O and Ba(OH) 2 8H 2 O) as latent heat storage materials. Measurements with differential scanning calorimeter to obtain the phase transition enthalpy, the phase transition temperature, the degree of supercooling and the variation of the specific heat with temperature in solid and liquid phase were performed. The measured values agree within 2–3% of the values in the literature. These salt-hydrates are melting in the low temperature range 20–80°C. Hence, they may be used in solar space heating applications.
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