Experimental analysis of frost formation with the presence of an electric field on fin and tube evaporator

This paper deals with an experimental study carried out to investigate the influence of DC electric fields on the performance of a fin and tube evaporator under frosting conditions. Several experiments are carried out measuring frost mass, air-side pressure drop and cooling capacity for different applied voltage, air velocity and evaporation temperature. Results show that the electric field reduces the frost mass and air-side pressure drop whereas it increases the cooling capacity. Finally, with a superimposed electric field, the overall energy consumption of the refrigerating unit reduces when referred to the same refrigerating effect.

► Frost formation on finned evaporator with electric field is experimentally studied. ► Frost mass reduction, air side pressure drop and cooling capacity are measured. ► Air side pressure drop reduction and cooling capacity increase are found. ► Overall electrical energy consumption reduces due to electric field influence.