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Fluides actifs à faible GWP pour les systèmes réversibles de pompes à chaleur à haute température et de cycle organique de Rankine (PACHT/ORC).

Low GWP working fluids for reversible systems of high temperature heat pump and organic Rankine cycle (HTHP/ORC).

Numéro : pap. 1210

Auteurs : PERIS PÉREZ B., NAVARRO-ESBRÍ J., MOLÉS F., et al.

Résumé

Communication présentée sous forme de poster lors de la conférence. An innovative measure to recover low-grade waste heat is a reversible system based on a High Temperature Heat Pump (HTHP) and an Organic Rankine Cycle (ORC). This system can produce useful thermal energy and, in periods with no thermal demand, produce electricity. This study analyzes the influence of several working fluids (HFC-245fa, ammonia, isobutane, and HFO-1336mzz-Z) over the system using a theoretical model in basic and IHX cycles of HTHP/ORC architectures. The model has been optimized to use the more appropriate built-in ratio and the IHX effectiveness. Firstly, the built-in results highlight scroll and screw technologies as the most appropriate for the compressor-expander component and ammonia as the working fluid that requires minor size. Secondly, IHX effectiveness can be maximized for all the cases studied except for ammonia at lower evaporating temperatures. Finally, HFO-1336mzz-Z is the working fluid that leads to higher performance operating in both modes (net electrical efficiency for ORC and COP for HTHP).

Documents disponibles

Format PDF

Pages : 8

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 : Low GWP working fluids for reversible systems of high temperature heat pump and organic Rankine cycle (HTHP/ORC).
  • Identifiant de la fiche : 30023757
  • Langues : Anglais
  • Source : 13th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
  • Date d'édition : 18/06/2018
  • DOI : http://dx.doi.org/10.18462/iir.gl.2018.1210

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