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Froid en dessous de 0 °C : refroidisseurs à adsorption utilisant de l’eau combinée à de l’éthylène glycol comme antigel.

Refrigeration below zero °C: Adsorption chillers using water with ethylene glycol as antifreeze.

Auteurs : SEILER J., HACKMANN J., LANZERATH F., et al.

Type d'article : Article, Article de la RIF

Résumé

Adsorption chilling with water as working fluid is environmentally friendly, but limited to cooling temperatures above 0°C. To expand the operational range of water based adsorption to and below the freezing point of water, we propose to add ethylene glycol as antifreezing agent to the evaporator. According to vapour liquid equilibrium data, ethylene glycol remains in the evaporator and thus should not be adsorbed. Therefore, only water is still serving as refrigerant. Experiments generating cooling power at 0°C demonstrate that the adsorption process works with ethylene glycol as anti-freezing agent. Furthermore, measured ethylene glycol concentrations in condenser and evaporator confirm that water serves as refrigerant. The experiments demonstrate the potential of adding anti-freezing agents to the evaporator to expand the application range of water based adsorption chillers.

Documents disponibles

Format PDF

Pages : 39-47

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 : Refrigeration below zero °C: Adsorption chillers using water with ethylene glycol as antifreeze.
  • Identifiant de la fiche : 30022283
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 77
  • Date d'édition : 05/2017
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2017.02.025

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