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Numerical simulation of glass doors defogging in refrigerated display cabinets.

Author(s) : D'AGARO P., CROCE G., CORTELLA G.

Summary

A numerical procedure for the simulation of fogging and defogging phenomena is presented and has been applied to the prediction of the demisting process on the glass door in a refrigerated closed display cabinet. The simulation involves the solution of the airflow along the glass both inside and outside the refrigerated cabinet, the evaluation of the unsteady conduction through the multi-glazed door and the modelling of the heat and mass transfer within the thin water layer on the fogged surface. Thus a suite of routines for the unsteady simulation of the water layer evolution is coupled with CFD solvers and the codes are iterated simultaneously to reproduce the physical transient before, during and after the door opening. Both activated and deactivated configurations of the electric heaters inside the glass are considered and the simulation results are compared to the experimental ones.

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Pages: 2005-3

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Details

  • Original title: Numerical simulation of glass doors defogging in refrigerated display cabinets.
  • Record ID : 2006-0796
  • Languages: English
  • Source: Commercial Refrigeration. Thermophysical Properties and Transfer Processes of Refrigerants. Proceedings of the IIR International Conferences.
  • Publication date: 2005/08/30

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