The air of the room to be dried is drawn by the fan and transferred to an evaporator. There it is cooled below the dew point. During the cooling process the water is separated from the air, resulting in condensation. The separated water is gathered in a receptacle and evacuated through a tube.
The separated air is guided through the condensor which reheats the air to a temperature higher than the drawn air. The air is taken over the heating resistances and heated up if necessary.
The dry and warm air is sent back to the drying kiln where it can take up more humidity yielded by the product. This process results in a continuously decreasing humidity inside the kiln.
Drying by means of a heat pump = drying energy-conscious