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Screening criteria for ILs used in NH3 based absorption heat pump systems.

Critères de sélection des liquides ioniques utilisés dans les systèmes de pompe à chaleur à absorption au NH3.

Numéro : pap. 2285

Auteurs : WANG M., INFANTE FERREIRA C. A.

Résumé

This paper describes a properties-optimization work for the working fluids in NH3 / ionic liquid (ILs) based singleeffect absorption heat pumps. The optimum parameters of the IL can be used as criteria in screening task-specified ILs, which play the role of absorbents, in absorption heat pumps. First, a 8-parameter thermodynamic model to calculate performances of a single-effect absorption heat pump cycle was proposed, which is based on the non-random two-liquid (NRTL) activity coefficient model for the vapor pressure and a linear function for the heat capacity. Then, experimental data on the vapor-liquid equilibrium (VLE) of solutions and heat capacities of the pure ILs were reviewed and fitted to obtain ranges of those parameters. Within certain limits, the values of parameters were optimized in the following step using the above proposed mode. The objective is a maximum system performance. The optimized ILs have low molecular weights, low specific heats and have high absorption capabilities.

Documents disponibles

Format PDF

Pages : 9

Disponible

  • Prix public

    15 €

  • Prix membre*

    11,25 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Screening criteria for ILs used in NH3 based absorption heat pump systems.
  • Identifiant de la fiche : 30018806
  • Langues : Anglais
  • Source : 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 11/07/2016

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