Stability of sugar alcohols as PCM for thermal energy storage
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Sugar alcohols as phase change materials (PCM) are very promising due to their high storage capacity, safety and economic reasons.Their phase change temperatures make them suitable for medium temperature storage, which is needed for solar process heat or waste heat recovery applications. To guarantee a long PCM working lifetime they should be tested under a repeated number of freezing/melting cycles to check whether the thermophysical properties remain constant or not. The cycling stability of D-mannitol, myo-inositol and galactitol has been studied with DSC and the chemical stability with FT-IR.Myo-inositol shows a good cycling stability under the chosen measuring parameters.The cycling and chemical stability of D-mannitol up to 20 cycles can be achieved by controlling some parameters. The variable affecting it the most is the amount of oxygen in contact with it. Hence, in the storage unit this could be prevented with an inert or vacuum atmosphere.
Is part ofSolar Energy Materials & Solar Cells, 2014, vol. 126, p.125-134
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Thermal stability test of sugar alcohols as phase change materials for medium temperature energy storage application Solé, Aran; Neumann, Hannah; Niedermaier, Sophia; Cabeza, Luisa F.; Palomo, Elena (Elsevier, 2014)Sugar alcohols are potential phase change materials candidates as they present high phase change enthalpy values, are non-toxic and low cost products. Three promising sugar-alcohols were selected: D-mannitol, myo-inositol ...
Health hazard, cycling and thermal stability as key parameters when selecting a suitable phase change material (PCM) Miró, Laia; Barreneche Güerisoli, Camila; Ferrer, Gerard; Solé, Aran; Martorell, Ingrid; Cabeza, Luisa F. (Elsevier, 2016)From the literature review it was observed that there is no established methodology, neither a common pattern, when selecting a phase change material for a thermal energy storage application. Melting temperature and enthalpy ...
Ferrer, Gerard; Solé, Aran; Barreneche Güerisoli, Camila; Martorell, Ingrid; Cabeza, Luisa F. (Elsevier, 2015)In recent years, thermal energy storage (TES) systems using phase change materials (PCM) have been widely studied and developed to be applied as solar energy storage units for residential heating and cooling. These systems ...