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Modélisation 3D et numérique transitoire des processus d'ouverture et de fermeture de porte et leur influence sur la performance thermique des chambres froides.

3D and transient numerical modeling of door opening and closing processes and its influence on thermal performance of cold rooms.

Numéro : pap. n. 176

Auteurs : CARNEIRO R., GASPAR P. D., SILVA P. D.

Résumé

The need of rationalize energy consumption in agrifood industry has fasten the development of methodologies to improve the thermal and energy performances of cold rooms. This paper presents a 3D transient Computational Fluid Dynamics (CFD) modelling of a cold room to evaluate the air infiltration rate through sliding doors. A species transport model is used for modelling the tracer concentration decay technique. Numerical predictions indicate that air temperature difference between spaces affects the air infiltration. For this case study, the infiltration rate increases 0.012 m3 s-1 per K of air temperature difference. The knowledge about the evolution of air infiltration during door opening/closing times allows to draw some conclusions about its influence on the air conditions inside the cold room, as well as to suggest best practices and simple technical improvements that can minimize air infiltration, and consequently improve thermal performance and energy consumption rationalization.

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Pages : 8 p.

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  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : 3D and transient numerical modeling of door opening and closing processes and its influence on thermal performance of cold rooms.
  • Identifiant de la fiche : 30015343
  • Langues : Anglais
  • Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Date d'édition : 16/08/2015
  • DOI : http://dx.doi.org/10.18462/iir.icr.2015.0176

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