The Proflute rotor can be used to reduce the moisture content in supply air to areas subject to air conditioning. When this is accomplished without adding any energy for reactivation it is called passive dehumidification.
The rotor is placed after the cooling coil in the AC-system, picking up moisture from the almost saturated fresh- or return air before it is blown into the area. To reactivate the rotor, the warmer exhaust air from the same area, passes the other sector of the rotor, which rotates slowly between the two sectors. Both airflows are of nearly the same size and blown through each half of the desiccant rotor.
Passive dehumidification will lower the necessary power of the AC-system, and less post-heating will be needed to make the supply air blown into the area comfortable. As a result, both the running cost and the investment for the AC-system, will be reduced.
Passive dehumidification is often incorporated in AC-systems for office buildings, hotels, schools, hospitals, and storage rooms. It is also used in HVAC-systems serving rooms where so called chilled beams have been built in.
Dry air storage
Hospital operating rooms
Chilled beam HVAC systems