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Mélanges eutectiques d’hydrates de sel pour des applications de stockage d’énergie thermique à température proche de celle de l’air ambiant.

Salt hydrate eutectic mixtures for near-ambient thermal energy storage applications.

Numéro : 2512

Auteurs : AKAMO D., TURNAOGLU T., LACLAIR T. J., GLUESENKAMP K. R., GOSWANI M., RIOS O., HIRSCHEY J.

Résumé

In this work, we synthesized and characterized Na2SO4.10H2O – Na2CO3.10H2O eutectic salt hydrate phase change material (PCM) using Differential Scanning Calorimetry (DSC), Attenuated total reflectance infrared spectroscopy (ATR-IR), and X-ray Diffraction (XRD) techniques. The eutectic point of the PCM mixture was predicted based on binary eutectic effect and ion exchange theory. The XRD and ATR-IR results indicate that the eutectic PCM mixture was formed based on only physical mixing without chemical interaction. Moreover, DSC results showed that the eutectic concentration is 50wt% Na2SO4.10H2O – 50wt% Na2CO3.10H2O with melting temperature of 25.18°C and melting enthalpy of 187.46 J/g. Also, 78% of melting enthalpy was recoverable after 10 melt/freeze cycles. This eutectic mixture has the potential to be used in building thermal comfort applications.

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Pages : 9 p.

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Détails

  • Titre original : Salt hydrate eutectic mixtures for near-ambient thermal energy storage applications.
  • Identifiant de la fiche : 30030760
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 2022

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