Abstract

Frost growth on heat exchanger fins under freezer operating conditions reduces the heat rate and increases the airflow pressure drop across heat exchangers.

In this paper, a numerical model is presented to predict the height of frost growing on the heat exchanger fins under freezer operating conditions where the frost is treated as a porous media and includes coupling with heat conduction in the fins. The simulation results are compared to the experimental data for frost height measured using a specially designed laser scanning system. The frost height data on two-dimensional fins agree well with the simulation results and are generally within the experimental uncertainty.

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