Experimental Evaluation Of The Frost Formation

Frost formation on an evaporator causes significant problems by decreasing inlet air flow. It is important for a precise prediction to understand the dominant factor of the frost formation. In this paper, the frost layer on the cold plate is experimentally obtained with different velocities while maintaining a surface temperature at -20 degrees Celsius. The mass and height of the frost layer is measured throughout the experiment. The frost mass rate depends strongly on the absolute humidity and inlet air velocity. The obtained frost density depends on the relative humidity and inlet air velocity. Results show that the effect of the inlet air velocity is minor in regions with high relative humidity.