A Characteristics Study on the Visualization and Heat Transfer of the Frost Formation Structure Variation by Control Plate Surface Temperature

표면온도 제어에 의한 착상층 구조변화의 가시화 및 열전달 특성 연구

To control the frost formation, a temperature variation of the cooling plate and characteristics on hydrophilic and hydrophobic surfaces was attempted. As a temperature variation of the cooling plate, being closely related to the frost layer density of frost layer is found to be affected by the melting process inside the frost layer during the heating period. At characteristics on surface, completely different structures of frost are appeared in the initial stage of frost formation due to the difference in surface conditions, while those effects are vanished with time. It is found that the frost thickness, density and heat flux characteristics are closely associated with the frost structure.