Numerical and Experimental Investigation on Frost Formation on Cold Cylinders

This paper presents the results of a study to develop a fast calculation routine which enables the prediction of the frost layer growth and the deposition velocity in terms of the surface temperature of the cold body, the rate of flow of the humid air and the rate of flow heat transfer and mass transfer equation for the flow of wet air around a circular cylinder are formulated and solved and the results are presented in function of the surface temperature, mass flow rate of the humid air and the mass flow rate of the working fluid. In order to validate the model and the numerical predictions, an experimental rig is constructed and adequately instrumented. Experiments were realized and the results were composed with the numerical predictions to confirm the validity of the model. Keywords- Frost; Frost predictions, Frost thickness; modeling of frost; measurements of frost