User Manual

62
Remarks of Siemens
This section outlines how Siemens interprets the functions and processing functions according
to EN 15232-1:2017.
13) Precondition for dew point control is an air humidifier (air washer) with a humidification efficiency
of at least 95 %, by that practically reaching a fully saturated air condition. By controlling to the
temperature of this saturated air the humidity content is also fixed. The required control
infrastructure for it is relatively small. This solution is only suitable in cases where the air that
has been cooled down to the dew point will be reheated in the room by internal (excessive)
heat. If this is not the case, a direct humidity control should be implemented in air conditioning
systems for efficiency reasons.
14) With spray humidification much lower humidification efficiency than for a dew point humidifier is
sufficient. Therefore a less costly device can be utilized. Important is that this device can be
controlled within a sufficiently large range.