15
Pictures for illustrating purposes only
% RH1 inlet air
5
10
20
30
40
50
60
70
% RH2 outlet air
Minimum humidification distance « D » in m.
40
0.9
0.8
0.7
0.5
-
-
-
-
50
1.1
1
0.9
0.8
0.5
-
-
-
60
1.4
1.3
1.2
1
0.8
0.5
-
-
70
1.8
1.7
1.5
1.4
1.2
1
0.7
-
80
2.3
2.2
2.1
1.9
1.7
1.5
1.2
0.8
90
3.5
3.4
3.2
2.9
2.7
2.4
2.1
1.7
SERIES EHU-750 HUMIDIFIER
Installation - Step 3
Evaporation distance or vapor trail « D »
A certain length is required so that the steam coming out of the steam distribution pipe be
absorbed by the air. All along this length, descrided as the evaporation distance, the steam can still
be seen in the airflow as a mist which can condensate in water against any obstacle if placed within.
To prevent condensation, this evaporation distance should be calculated before positioning the
steam distribution pipe.
How to calculate the evaporation distance « D »
In order to determine the evaporation distance, the attached calculation table can be used :
HR1 = relative humidity of air before humidification in %.
HR2 = relative humidity of air after humidification in %.
D minimum humidification distance in meters (m).
This calculation table is to be used for temperatures between 20 and 25 °C. For lower
temperatures, please consult factory.
Minimal distances of humidification
The steam distribution pipes should be positioned as per the following indications and in
consideration of your Air Handling Unit. Please consider these distances as minimum
POSITIONING OF THE STEAM DISTRIBUTI0N PIPE
Before / after fan
before / after heater/filter
D
D
1.5 x D
5cm
2,5 x D before thin particule filter
