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Example:
Desired humidification output: 110 kg/h
Operating pressure, p = 2 bar
The le ngth an d number of steam lances is d etermined b y the
duct dimensions. See Section 9 "Steam Lances".
Result:
Follow the operating pressure line until the de sired humidifica-
tion output in kg/h is reached.
Run a verical line upwards from this point until it intersect s the
plotted cu rve. The first interse cted curve in dicates the steam
lance code and its minimum length.
Now run a horizontal line to the left and read of f the minimum
Kv-Wert of the inst allation on the vertical axis. The minimum
Kvs-Value for selcting the control valve is K
v
=5,2 m³/h + 10% =
K
vs
=5,7 m³/h. If this value is not present in table 6.4 then it is
recommended to take the next higher value.
If the customer has not specified something else,
then it is
always calculated whether the desired output can be achieved
with the Type 20. In this case a Type 20 separator and a steam
lance of at least code 3 is necessary. Always check whether this
result is con sistent with the result s from Section 9 "S team
Lances."
Note:
The following 4 graphs show Kvs -Values determination.
Separator Typ 20 for only one l ance
Lance Code
110kg/h Steam output kg/h
Pressure
In bar g
Kv-value
from v alve
Summary of Contents for DDS20
Page 1: ...Steam Injection Humidifiers DDS for existing steam nets DDS ENZ DDS EN Manual...
Page 55: ......
Page 56: ...12 2004...
