Preliminary study of a novel defrosting method for air source heat pumps based on superhydrophobic fin

摘要: Abstract Current defrosting methods for air source heat pumps always implement in the frost layer growth period. As a result, heating performance decays because of growth, and large amounts energy time are consumed to melt layer. Moreover, cycle is interrupted when starts, which leads discontinuous heating. Frost forms grows on surfaces embryos form initial stage frosting process. If removed timely, process can be cut off. Thus, comprehensive method, combines surface characteristic superhydrophobic fin high-speed hot airflow, proposed this paper. Its mechanism realization analyzed, preliminary experiments performed verify its feasibility. When airflow acts surface, most instantaneously blown away by due weak adhesion surface. Only few small remain on evaporated quickly 3.5 s. Preliminary results indicate that novel method feasible avoid disadvantages current methods.