Condair Esco

3.2 Connection unit and ceramic rotary-disk control valve
Steam connection unit Esco 20
Valve admission pressure p1 (bar)
Valve size
Humidification capacity m D [kg/hr]
Selection diagram for dimensioning the
connection unit Esco 20 with the corresponding
valve size.
Steam connection unit Esco 30
Valve admission pressure p1 (bar)
Valve size
Selection diagram for dimensioning the
connection unit Esco 30 with the corresponding
valve size.
• Connection unit Esco 10, 20 and 30
• Ceramic rotary-disk control valve
Characteristic curve for 18 different valve sizes, depending on humidification
capacity and steam pressure
Example:
– Required humidification capacity: 100 kg/hr
– Available steam pressure: 1.5 bar
The intersection of the two “search lines” for the connection unit is located
in the Esco 10 diagram between the characteristic curves 10/7 and
10/8.
– Esco 10 with valve size 10/7 provides 76 kg/hr
– Esco 10 with valve size 10/8 provides 120 kg/hr
The HVAC engineer will select one of the two possible valves:
a) the Esco 10-10/7, if it is permissible for the “comfort” humidification
to be somewhat lower, in favour of optimal controllability during
the remainder of the operating time.
b) the Esco 10-10/8, if the humidity requirements were calculated
rather tightly, or if a certain application in process technology
requires the max. steam capacity.
With the rotary control valve actuator CA 150, the steam output can
be limited to the actual system requirement. Without this limitation, the
steam boiler output must be dimensioned to correspond with the max.
steam capacity of the ceramic rotary-disk control valve.
Note:
The computer dimensioning program will always select the larger valve
size.
Steam connection unit Esco 10
Valve size
Humidification capacity m D [kg/hr] Humidification capacity m D [kg/hr]
Valve admission pressure p1 (bar)
Selection diagram for dimensioning the connection unit Esco 10 with the corresponding
valve size.
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