Research Progress of Evaporator Surface Frost Suppression Technology

Abstract

Frosting of the evaporator leads to the increase of its thermal resistance and the reduction of system COP, which affects the safe use and efficient operation of air source heat pump. This paper summarizes the common evaporator frost suppression methods researched by scholars at home and abroad, and classifies the frost suppression methods into four categories: changing the temperature of the evaporator, changing the temperature of the evaporator, and changing the temperature of the evaporator. This paper summarizes the common evaporator frost suppression methods researched by scholars at home and abroad, and classifies the frost suppression methods into four categories: changing the inlet air parameter of the evaporator, modifying the surface of the evaporator, optimizing the structure and design of the evaporator and applying an external electromagnetic field to the evaporator, and overviews the progress of the research on the four frost suppression methods and makes an outlook to provide references and proposals for the further development of evaporator frost suppression technology of the air source heat pumps.