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Abstract
This article is devoted to the study of air curtains applied to reduce the refrigerated chambers heat gains. The proposed strategy is based on the numerical simulation of air curtains by means of computational fluid dynamics (CFD) using RANS modeling and their corresponding experimental validation. Further work on the reduction of the detailed numerical results into overall energetic parameters is also presented. Unsteady three-dimensional numerical parametric studies are carried out, simulating the process of refrigerated chamber sudden door opening. The numerical solutions are verified and the influence of the turbulence model used is also investigated. The studies are centered on the influence of air curtain location, the air suction combination, and both the air discharge velocity and the discharge angle.
This research work has been financially supported by the Ministerio de Educación y Ciencia, Secretaria de Estado de Universidad e Investigación, Spain, (Ref. ENE2006-14247/ALT) and by the European Community (Craft EFROST project, contract No. COOP-CT-2004-513106).
Notes
∗Angle positive towards cold side.