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Document IIF

Taille et adéquation du capteur-évaporateur pour des pompes à chaleur solaires à détente directe utilisant des frigorigènes alternatifs potentiels.

Size and match of the collector-evaporator for direct-expansion solar assisted heat pumps using potential alternative refrigerants.

Auteurs : MA J., ZHU X., FAN H., SU J., LU Y., ZHANG Z.

Type d'article : Article de la RIF

Résumé

The design of solar-assisted heat pumps (DX-SAHPs) plays a crucial role in their effectiveness and stability. However, little study was conducted on the design of DX-SAHPs using potential alternative refrigerants. Even traditional refrigerants are being phased out due to their harmful impact on the environment. The primary design goal of a DX-SAHP is to establish the collector-evaporator area. Employing the thermodynamic analysis method, this study examined the collector-evaporator area for DX-SAHPs using potential alternative refrigerants and R410a under various design conditions. Additionally, a comprehensive investigation into how the collector-evaporator structural parameters affect the collector-evaporator area for DX-SAHPs was conducted. The results showed that: (1) an increase of solar radiation intensity by 100 reduces the required collector-evaporator area by at least 9.55 %. If the wind speed exceeds 4 m·s-1, an increase of wind speed by 1 increases the required collector-evaporator area by at least 14.53 % (2) Refrigerants with transcritical cycles have much larger collector-evaporator areas than refrigerants with subcritical cycles. (3) For the same design conditions, there is a minimal difference in area between the thermal and photovoltaic/thermal (PV/T) collector-evaporators, as well as between the copper and aluminum collector-evaporators. (4) It is feasible to reduce the collector-evaporator area by increasing the plate thickness and lowering the tube pitch of the collector-evaporator. However, the potential is limited.

Documents disponibles

Format PDF

Pages : 253-266

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 : Size and match of the collector-evaporator for direct-expansion solar assisted heat pumps using potential alternative refrigerants.
  • Identifiant de la fiche : 30033558
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 171
  • Date d'édition : 03/2025
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2024.12.002

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