7.4 - Dimensioning of the Dilution Water Valve
M2041/5en
SBT-2400 Appendix
65
©BTG 2006
7.4 Dimensioning of the Dilution Water Valve
Calculation of dilution water quantity – Q
Required data:
Production [t/h] = P
Uncontrolled consistency [%] = C1
Desired controlled consistency [%] = C2
7.4.1
Calculation Formula for Dilution Water Flow:
Example:
Production = 8 t/h
Uncontrolled consistency = 3%
Desired controlled consistency = 2.5%
7.4.2
Dimensioning of the Dilution Water Valve
Calculation formula for the capacity factor K
v
.
NOTE!
C
v
= K
v
x 1.155
= Capacity factor (m³/h)
= Quantity of liquid (m³/h)
= Density of liquid (kg/m³)
= Pressure drop across the control valve (bar)
P
100 C1
C2
–
(
)
×
C1
C2
×
---------------------------------------------
Q
=
m
3
/h
Q
8
100 3
2,5
–
(
)
×
3
2,5
×
----------------------------------------
800
0,5
×
7,5
----------------------
53,3
=
=
=
m
3
/h
K
v
ρ
1000
Δ
p
×
-------------------------
Q
=
K
v
Q
ρ
Δ
p
