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Préparation et performance d'un PCM composite hydrate de TBAB/SiO2 stabilisé pour le stockage d'énergie froide.

Preparation and performance of form-stable TBAB hydrate/SiO2 composite PCM for cold energy storage.

Auteurs : ZOU T., FU W., LIANG X., et al.

Type d'article : Article, Article de la RIF

Résumé

Combining cold energy storage using phase change materials (PCMs) with cooling system used in air conditioner can make notable improvement in energy conservation. In this research, 40% tetra-n-butyl ammonium bromide (TBAB) solution as cold energy medium was preferred due to its appropriate phase change temperature (11.81°C) and high latent heat (211.9?J g-1). Additionally, Na2HPO4·12H2O as nucleating agent could minimize its supercooling degree, with the enhanced crystallization behavior confirmed by optical microscope. A form-stable TBAB hydrate/fumed silica (SiO2) composite PCM was prepared and characterized. The results indicated that the composite PCM containing 30% SiO2 possessed large latent heat (134.0?J g-1), low supercooling degree (2.01°C) and excellent form-stable performance without any liquid leakage above melting temperature (8.33°C). Besides, the composite PCM exhibited an outstanding chemical compatibility, thermal reliability and thermal insulation performance. Considering its desirable properties, TBAB hydrate/SiO2 composite PCM has great potential for cold energy storage.

Documents disponibles

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Pages : 117-124

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Preparation and performance of form-stable TBAB hydrate/SiO2 composite PCM for cold energy storage.
  • Identifiant de la fiche : 30025739
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 101
  • Date d'édition : 05/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.02.020

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