Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 159, Issue -, Pages 560-569Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2016.10.009
Keywords
Thermal energy storage; PCM; Sugar alcohols; Characterization
Funding
- European Community's Seventh Framework Programme [296006]
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Sugar alcohols (SA) are attractive phase change materials (PCM) for thermal energy storage applications at low to-medium temperatures (70-180 degrees C). Five pure sugar alcohols (xylitol, adonitol, L-arabitol, erythritol, D-mannitol) and three eutectic blends (eythritol/xylitol, L-arabitol/erythritol, L-arabitol/xylitol) are investigated in this paper. Experimental characterization of such materials as PCMs is provided. This encompasses the measurement of their melting point and latent heat of fusion, as well as the experimental determination of all key physical properties (specific heat, thermal conductivity, thermal diffusivity, density, viscosity) as a function of the temperature. The performances of the studied materials are compared to those of most currently used PCMs (paraffin waxes, salt hydrates etc.) in the field of thermal energy storage. The most significant applications, including solar seasonal energy storage, are also discussed.
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