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Semi-empirical evaluation of HCFO-1224yd(z) as a replacement for HFC-245fa in high temperature heat pumps.

Évaluation semi-empirique du HCFO-1224yd(Z) en remplacement du HFC-245fa dans les pompes à chaleur à haute température.

Résumé

This paper investigates a promising low-GWP refrigerant HCFO-1224yd(Z) as an alternative replacement for HFC-245fa in high temperature heat pumps. A comprehensive thermophysical properties analysis was realised along with thermodynamic modelling of a single stage cycle with Internal Heat Exchanger (IHX) and semi-empirical drop-in test replacement. The heat source temperature was fixed in 80 ºC, whereas the heat sink temperature was varied from 110 to 140 ºC to cover a wide range of industrial applications. The theoretical and semi-empirical results illustrate that the heating capacity of HCFO-1224yd(Z) becomes around 8.9% lower than HFC-245fa. However, the higher suction density of HCFO-1224yd(Z) compared to the reference fluid can compensate this phenomenon, reducing the compressor power consumption. Hence, HCFO-1224yd(Z) presents a COP increase up to 4.5% compared to the reference fluid. At heat sink temperature of 140 ºC, HCFO-1224yd(Z) shows a COP of 2.33, whereas HFC-245fa has a value of 2.23. Therefore, HCFO-1224yd(Z) can be used as an alternative to HFC-245fa in high temperature heat pumps due to its proper thermophysical and environmental properties.

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 : Semi-empirical evaluation of HCFO-1224yd(z) as a replacement for HFC-245fa in high temperature heat pumps.
  • Identifiant de la fiche : 30027645
  • Langues : Anglais
  • Sujet : Alternatives aux HFC
  • Source : IIR Rankine Conference 2020.
  • Date d'édition : 31/07/2020
  • DOI : http://dx.doi.org/10.18462/iir.rankine.2020.1117

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