Wolf CRL-iD-1300 Installation And Maintenance Instructions Manual page 33

Flow rate calculation
CRL-1300 effective pressure
Δp = effective pressure
(symbolic representation)
CRL-2500 effective pressure
Δp = effective pressure
(symbolic representation)
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16. Commissioning
The flow rate is calculated using the effective pressure method. This involves
comparing the static pressure upstream of the inlet nozzle with the static
pressure in the inlet nozzle.
The flow rate can be calculated from the effective pressure Δp
(differential pressure of the two static pressures) using the following equation.
The doors must be closed to determine the correct flow rate. Route the test
hoses through the unit floor to the outside when conducting the test.
The fans used for the CRL-1300 ave a k value of 76.
1000
V = 76 x √Dp
800
600
400
200
0
1500
Δp [Pa] 43 62
[m³/h] 500 600
V
The fans used for the CRL-2500 ave a k value of 77.
1200
V = 77 x √Dp
1000
800
600
400
200
0
700 1000
Δp [Pa] 137 204
[m³/h] 900 1100
V
w
2000 2500
Flow rate [m³/h]
85 111 140 173
700 800 900 1000
w
1300 1600 1900
Flow rate [m³/h]
285 379 487 609
1300 1500 1700 1900 2100 2300 2500
w
3000 3500
209 249 293
1100 1200 1300
2200 2500 2800
744 892 1054
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