Ice, frost or frost build-up on heat exchangers is a persistent problem in the freezer and normal refrigeration sectors. Continuous icing consistently throws a wrench in operators' plans, as iced cold rooms are more inefficient. Ice buildup has two detrimental effects: First, it acts as an insulating layer between the heat exchanger and the airflow, and second, it blocks the flow path between the fins. Both effects lead to a significantly poorer thermodynamic efficiency of the system, which has to be compensated by increased power consumption. To avoid and combat this undesirable ice build-up, there are different defrosting methods to choose from, such as hot gas, or electric defrosting. But, basically, the defrosts in each system are pre-programmed either at specific times or over fixe ...