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Experimental study of a novel cold storage medium: tetra-butyl ammonium chloride hydrate.

Etude expérimentale d'un nouveau matériau d'accumulation thermique : l'hydrate de chlorure de tétrabutyle-ammonium.

Auteurs : XIE Y., WEI J., LIU D., et al.

Résumé

A novel quaternary ammonium salt-tetra butyl ammonium chloride (TBAC) is chosen to generate hydrate for cold storage, the influence of solution concentration, cycle time, and borax as nucleation agent on the hydrates formation characteristics are studied. The results show that the solution with mass concentration of 40% has more stable phase transition process, which is more suitable for air-conditioning cold storage system; Adding some nucleating agent such as borax in appropriate concentration to TBAC solution could decrease the phase transition temperature 2°C, and the super-cooling degree of crystallization could be decreased 2°C. After reaction cycle repeated for some times, the super-cooling degree is decreased 1.5°C without any change of phase transition temperature. The DSC test has shown that the tetra butyl ammonium chloride hydrate takes phase transition under the temperature of 10.41°C, with the latent heat of 197.707 kJ/kg.

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Pages : 2010-5

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Détails

  • Titre original : Experimental study of a novel cold storage medium: tetra-butyl ammonium chloride hydrate.
  • Identifiant de la fiche : 2010-1479
  • Langues : Anglais
  • Source : 9th Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: Sofia, Bulgaria, September 29-October 1, 2010.
  • Date d'édition : 01/09/2010

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