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Caractéristiques de transfert de masse d'un matériau de dispersion pour la rectification d'ammoniac dans des systèmes frigorifiques à absorption à ammoniac/eau.

Mass transfer characteristics of a structured packing for ammonia rectification in ammonia-water absorption refrigeration systems.

Auteurs : SIERES J., FERNÁNDEZ-SEARA J.

Type d'article : Article, Article de la RIF

Résumé

In ammonia-water absorption refrigeration systems a purification process of the vapours produced in the generator is required. One type of equipment to carry out the purification process is a packed column. However, detailed experimental studies at the normal operating conditions found in ammonia-water absorption refrigeration systems have not been found. An experimental facility has been designed and built to study the ammonia-water rectification in packed columns. Experimental tests have been performed at the normal operating conditions found in the high-pressure stage of a small power ammonia-water absorption refrigeration system. In this paper, the experimental set-up is described and experimental results of the height equivalent to a theoretical plate (HETP) and the volumetric mass transfer coefficient of a rectifying section with the Sulzer BX packing are presented. The HETP values and the experimental mass transfer coefficients are compared with different data and correlations proposed in the literature; it has been found that the differences are appreciable.

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Format PDF

Pages : 58-67

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 : Mass transfer characteristics of a structured packing for ammonia rectification in ammonia-water absorption refrigeration systems.
  • Identifiant de la fiche : 2006-2898
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 1
  • Date d'édition : 01/2007

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