The humidifier ROTO-FLUE has higher capacity, better efficiency
and lower pressure drop than any comparable product

Pioneering Humidifier

Radscan Intervex have further developed the well-known Ljungströms air pre-heater to become a highly efficient enthalpy exchanger, which compliments the condenser RECO-FLUE.

The flue gases after the RECO-FLUE are saturated by water vapour. As the heat- exchanger body for ROTO-FLUE, with its very large contact surface rotates between the flue gases and the combustion air, it will transfer both sensible heat and moisture from the flue gases to the combustion air.

Rotary Humidifier

Efficient transfer of heat and moisturet

The heat exchanger body of the ROTO-FLUE is constructed from thin lamellas made of Polypropylene, which make up rectangular channels only a few millimetres wide. This gives a very large heat transfer surface per volume unit, typically 20,000-30,000 m2 for a rotor with a diameter of 4 m. As a result of this, and the fact that flue gases and air pass through the rotor in opposite directions, an efficient enthalpy transfer with little volume is ensured.

The channels for air and flue gases are designed so that the flow through the rotor is done within the laminar flow range, whereby the pressure drop over ROTO-FLUE stays low.

Tight construction without risk of flue gas leakage

The air and flue gas passages are separated by a special sealing strip, which at prevailing pressure conditions in the ROTO-FLUE, efficiently prevents flue gases to enter into the combustion air. The casing seal is designed as a water lock, which practically eliminates the risk of leakage

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