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Matériau à changement de phase composite innovant à base de dodécane-hexadécane et de graphite expansé pour les applications de stockage à froid à températures négatives.

Innovative dodecane-hexadecane/expanded graphite composite phase change material for sub-zero cold storage applications.

Auteurs : ZHOU Z., MO S., LI Q., FU K., JIA L., CHEN Y.

Type d'article : Article de la RIF

Résumé

Utilization of phase change materials (PCMs) for cold energy storage has garnered increasing attention. This study focuses on the development of a composite PCM by integrating a novel eutectic dodecane-hexadecane (DD-HD) PCM into expanded graphite (EG), to cater to the demands of sub-zero cold energy storage applications, such as cold chain logistics. The study identified the optimal mass ratio of DD-HD as 80:20. A series of DD-HD/EG composites were fabricated through a combination of high-speed emulsification and physical adsorption methods. The adsorption capacity of EG for the eutectic PCM mixture was evaluated by examining the impact of EG fraction on the leakage of the composite PCM, revealing that the optimum EG fraction is 10 wt%. The composite PCM displayed a sub-zero phase change temperature of -12.09 ℃, a high melting enthalpy of 178.75 kJ/kg, and a high thermal conductivity of 5.18 W/(m•K). The thermal conductivity of the composite was enhanced by 22.52 times compared to the base PCM. Thermogravimetric analysis indicated that the decomposition temperature of DD-HD/EG was significantly higher than that of the base PCM. The composite demonstrated outstanding thermal reliability, as evidenced by thermal cycle tests. With its impressive thermal characteristics, this composite shows great potential for various cold energy storage applications.

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Format PDF

Pages : 98-107

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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Détails

  • Titre original : Innovative dodecane-hexadecane/expanded graphite composite phase change material for sub-zero cold storage applications.
  • Identifiant de la fiche : 30032595
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 166
  • Date d'édition : 10/2024
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2024.07.003

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