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Caractéristiques de performance d'un système de conditionnement d’air résidentiel avec régulation du sous-refroidissement.

Performance characteristics of a residential air conditioning system with subcooling control.

Numéro : pap. n. 1135

Auteurs : KIMURA DE CARVALHO B. Y., HRNJAK P.

Résumé

Superheat control of refrigerant flow using thermostatic expansion valves (TEV) has been widely employed in residential air conditioning and heat pump (RAC&HP). Subcooling control is an alternative for refrigerant flow metering focusing on maximizing COP/HPF or capacity. An electronic expansion valve (EEV) adjusts subcooling while an accumulator prevents liquid return. The paper provides an experimental analysis on the performance of a RAC system with subcooling control. Performance of the system was evaluated at different conditions, at nominal charge. Superheat and subcooling control are compared. Refrigerant charge was also optimized at a single condition for both superheat and subcooling control. Results show a 10.1% increase in COP using subcooling control for indoor/outdoor temperatures of 20°C/40°C. Subcooling control provides a balance between the increase in specific compression work and the increase in specific refrigerating effect.

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Pages : 8

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    20 €

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Détails

  • Titre original : Performance characteristics of a residential air conditioning system with subcooling control.
  • Identifiant de la fiche : 30026781
  • Langues : Anglais
  • Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Date d'édition : 24/08/2019
  • DOI : http://dx.doi.org/10.18462/iir.icr.2019.1135

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