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Une pompe à chaleur au sein d'un processus de cristallisation à contre-courant.

A heat pump in a counter-current crystallization process.

Auteurs : HARAHSHEH A. M. al-

Type d'article : Article, Étude de cas

Résumé

Recently, industrial heat pumps are being used as important heat recovery equipment that can facilitate energy savings in various chemical processes, like distillation, evaporation, and absorption. One of the prospective processes for the use of heat pumps is in various crystallization processes, where usually two different cooling and heating zones are present. The paper presents a study of the possibility to reduce the consumption of energy in a counter-current crystallization process, which is usually used to separate organic compounds from their mixture, by introducing a heat pump with external medium (refrigeration cycle) to the process. A focus is made on a refrigeration cycle in which ammonia is used as the refrigerant. A calculation for the proposed heat pump is performed and a dimensionless energy saving factor is introduced. The saving factor assumes the value of zero for conventional systems. An economic analysis is made and a noticeable saving in energy ranging from 34 to 45% was obtained. The effect of the feed temperature and the concentration on the obtained saving energy factor were investigated.

Détails

  • Titre original : A heat pump in a counter-current crystallization process.
  • Identifiant de la fiche : 2005-2827
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 25 - n. 4
  • Date d'édition : 03/2005

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