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Expériences sur les conditions de changement de phase et la chaleur latente de changement de phase de solutions aqueuses de bromure de tétra-n-butylammonium.

[In Chinese. / En chinois.]

Auteurs : SUN Z., JIANG C., SUN L.

Type d'article : Article

Résumé

Tetra-n-butyl ammonium bromide (TBAB) aqueous solution can form semi-clathrate hydrate at suitable solution concentration and temperature of chilled water at atmosphere pressure. It is a potential solid-liquid phase change material for cold storage in air conditioning systems. The solid-liquid phase change conditions of TBAB aqueous solutions were experimentally measured using the test rig for hydrate formation. The experimental results show that the phase change temperature of the TBAB hydrate increased with the increase of the concentration of the TBAB aqueous solution when the solution concentration was less than 45%, but the increment of the phase change temperature decreased when the TBAB solution mass fraction exceeded 25%. The phase change temperature of the TBAB hydrate decreased with the increase in the concentration of the TBAB aqueous solution when the solution concentration was more than 45%. The phase change latent of the TBAB aqueous solution was measured using the DSC rig and the test result shows that the phase change latent was about 195.9 kJ/kg.

Documents disponibles

Format PDF

Pages : pp. 24-26

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

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

Détails

  • Titre original : [In Chinese. / En chinois.]
  • Identifiant de la fiche : 2010-0139
  • Langues : Chinois
  • Source : Journal of Refrigeration - vol. 30 - n. 129
  • Date d'édition : 10/2009

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