Wolf CRL Series Installation And Maintenance Instructions Manual page 41

Flow rate calculation
V k
= √Dp
w
V
in [m³/h] and Dp
CRL-1300 effective pressure
Δp = effective pressure
(symbolic representation)
CRL-2500 effective pressure
Δp = effective pressure
(symbolic representation)
3064361_201811
17 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.
in [Pa]
The doors must be closed to determine the correct flow rate. Guide the test
w
hoses over the test connectors towards the outside.
The fans used for the CRL-1300 have a k value of 76.
320.0
270.0
220.0
170.0
120.0
70.0
20.0
450
Δp [Pa]
[m³/h]
V
The fans used for the CRL-2500 have a k value of 77.
1110.0
1010.0
910.0
810.0
710.0
610.0
510.0
410.0
310.0
210.0
110.0
850
Δp [Pa]
[m³/h]
V
V = 76 x √Dp
w
550 650 750
Flow rate [m³/h]
43 62 85 111
500 600 700 800
V = 77 x √Dp
w
1050 1250 1450
Flow rate [m³/h]
137 204 285 379
900 1100 1300 1500 1700 1900 2100 2300 2500
850 950 1050 1150
140 173 209 249
900 1000 1100 1200 1300
1650 1850 2050 2250
487 609 744 892
w
1250 1350
293
2450 2650
1054
41