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Enquête sur l’utilisation de chlorure de strontium composite conducteur thermique innovant pour les machines de refroidissement à sorption à l’ammoniac.

Investigation on innovative thermal conductive composite strontium chloride for ammonia sorption refrigeration.

Auteurs : JIANG L., WANG R. Z., LU Y. J., et al.

Type d'article : Article, Article de la RIF

Résumé

A novel composite strontium chloride (SrCl2) is developed with porous material of expanded natural graphite (ENG) and nanoparticle of carbon coated nickel (Ni@C) as the additives. Thermo-physical properties such as thermal diffusivity, thermal conductivity and permeability are investigated and analyzed. The highest thermal diffusivity could reach 6.2?mm2·s-1. Correspondingly the highest thermal conductivity is 4.03 W?·?m-1?·?K-1, which is about 20 times higher than that of granular SrCl2. Permeability of novel composite SrCl2 ranges from 1.31?×?10-9 m2 to 1.07?×?10-13 m2. Moreover, samples with Ni@C have better sorption performance in ammonia than those without Ni@C due to the improved heat and mass transfer performance. Ammonia sorption quantities of novel composite SrCl2 range from 0.39?kg·kg-1 to 0.67?kg·kg-1 when evaporation temperature varies from -15?°C to 15?°C. The addition of ENG and Ni@C shows great potentials for sorption refrigeration by adjusting the concentration swing.

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Pages : 157-166

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Détails

  • Titre original : Investigation on innovative thermal conductive composite strontium chloride for ammonia sorption refrigeration.
  • Identifiant de la fiche : 30022806
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 85
  • Date d'édition : 01/2018
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2017.09.020

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