Abstract
The present study is aimed to investigate the oscillation effects on the frost formation and the liquid droplet solidification on a cold plate in atmospheric air flow. A microscopic image system is used to observe the structure of the frost layer, and an electrodynamic shaker is designed to oscillate the cold plate at various amplitudes ( D) and frequencies ( f). The physical parameters considered in this study include the velocity, temperature, and relative humidity of the air ( V, T a, and φ), as well as the surface temperature of the cold plate ( T w), which is varied by adjusting the cooling refrigerant temperature ( T ref). The ranges of the physical variables considered in this study are: 2⩽ V⩽8 m/s, 18⩽ T a⩽30 °C, 40%⩽ φ⩽70%, −18⩽ T ref (and T w)⩽0 °C, 40⩽D⩽100 μm, and 100⩽ f⩽200 Hz.
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