WIT Press


Modelling Of Frost Formation Over A Flat Plate

Price

Free (open access)

Paper DOI

10.2495/HT960461

Volume

12

Pages

10

Published

1996

Size

826 kb

Author(s)

K.A.R. Ismail & C.S. Salinas

Abstract

This paper models the frost formation process on a cold surface exposed to warm moist air flow. The model employs a one dimensional transient formulation based upon the local volume averaging technique. This model enables predicting the frost temperature, density and thickness distribution along the plate as well as the void fraction. Available experimental data was used to validate the model. Also numerical experiments were realized to establish the best initial values of the diffusivity and initial radius of the ice crystals. 1 Introduction Thermal processes in which heat is transfered to or from a cold surface are important in a variety of applications in refrigeration, compressores blades, heat pumps and heat recovery systems, etc. As the frost layer grows, the convective heat transfer is affected in part because the insulating e

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