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Document IIF

Performance thermique d'un matériau à changement de phase granulaire et développement d'eutectiques à base d'hydrate de sel pour le conditionnement d'air.

Thermal performance of granular PCM and development of salt hydrate eutectics for air conditioning.

Numéro : pap. O11

Auteurs : PINNAU S., EFIMOVA A., MISCHKE M., et al.

Résumé

The granular phase change material (PCM) Rubitherm PK 6 has been investigated for the application of cold water supply in air conditioning systems. It is a compound of paraffin and a plastic matrix with granule sizes of about 5 mm. The PCM is used as a packed bed with water as heat transfer fluid. Experimental results show high performances compared to previous measurements with other macro scale encapsulations like spheres and plastic pouches. In addition a systematic search for binary and ternary eutectics of inorganic salts and salt hydrates with melting temperatures between 4 and 25°C has been performed by means of differential scanning calorimetry (DSC). Here, the ternary system of Zn(NO3)2-6 H2O, Mn(NO3)2-4 H2O and KNO3 with an melting temperature range 18-21°C is presented. Suitable nucleating and thickening agents have been found and tested to prevent the mixture from subcooling and phase separation.

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Pages : 8 p.

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Détails

  • Titre original : Thermal performance of granular PCM and development of salt hydrate eutectics for air conditioning.
  • Identifiant de la fiche : 30004984
  • Langues : Anglais
  • Source : 10th International Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: Kobe, Japan, July 29-August 1, 2012.
  • Date d'édition : 01/07/2012

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