Partager

Document IIF

A probabilistic design approach for refrigerant charge and capillary tube selection in single-door refrigerators.

Auteurs : SENGER G. A., SILVEIRA A. S., HERMES C. J. L.

Type d'article : Article de la RIF

Résumé

This study advances a strategy for selecting refrigerant charge and capillary tube for single-door refrigerators on the grounds of probabilistic approach to design. An experimental methodology, including not only a charging station but also an operating protocol, is introduced for automatic refrigerant charging with an uncertainty of ±0.3 g, and expansion device modulation with ±7.4 % uncertainty in terms of an equivalent capillary tube diameter obtained by means of nitrogen flow characterization. A semi-empirical system simulation model, using refrigerant charge and capillary tube diameter as inputs, was put forward, being able to predict energy consumption within ±5 % error bounds for 50 out of 51 experimental runs. A model-based uncertainty analysis
suggests avoiding refrigerant charge and capillary tube combinations that result in a superheating degree below 3◦C due to the capillary tube diameter manufacturing tolerance. Experimental tests were conducted for mapping energy consumption at steady-state and on-off compressor operation for different combinations of expansion restriction and refrigerant charge. The results indicate that a combination of expansion restriction and refrigerant charge leading to an evaporator superheating from 2 to 4◦C minimizes energy consumption during both steadystate and on-off operations. Moreover, a method for automatic selecting the refrigerant charge and capillary tube is proposed.

Documents disponibles

Format PDF

Pages : 12 p.

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 : A probabilistic design approach for refrigerant charge and capillary tube selection in single-door refrigerators.
  • Identifiant de la fiche : 30034852
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 186
  • Date d'édition : 06/2026
  • DOI : http://dx.doi.org/https://doi.org/10.1016/j.ijrefrig.2026.106909

Liens


Voir d'autres articles du même numéro (27)
Voir la source

Indexation