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Etude expérimentale sur un échangeur de chaleur en matière plastique appliqué aux refroidisseurs de liquide à absorption au bromure de lithium.

The experimental investigation on the plastic heat exchanger applied in lithium bromide-water absorption chillers.

Auteurs : ZHANG X. B., HU Y. C., YU Z. T., et al.

Résumé

In lithium bromide-water absorption chillers, the use of metal heat exchangers induces corrosion, fouling and higher cost compares with metal devices. Taking this into consideration, a novel thin-walled and small diameter PTFE (polytetrafluoroethylene) plastic heat exchanger has been developed instead of the conventional metal devices in lithium bromide-water absorption chillers in this paper. A prototype of single-effect lithium bromide-water absorption chiller has been designed. And a series of performances of the sample prototype have been tested, and the concerned factors affecting the refrigeration performance of lithium bromide-water absorption chillers have been investigated. The experimental results indicate that the PTFE heat exchangers have a good performance in lithium bromide-water absorption chillers and can impair corrosion. The maximum COP, 0.236, is attained when the flux of chilled water is 560 l/h, while the maximum COP, 0.228, is attained as the flux of cooling water in condenser is 560 l/h.

Détails

  • Titre original : The experimental investigation on the plastic heat exchanger applied in lithium bromide-water absorption chillers.
  • Identifiant de la fiche : 2008-2114
  • Langues : Anglais
  • Source : Cryogenics and refrigeration. Proceedings of ICCR'2008.
  • Date d'édition : 05/04/2008

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