30

16 x 2.0

20 x 2.0

25 x 2.5

32 x 3.0

40 x 4.0

R

v

R

v

R

v

R

v

R

v

V

.

l/s

hPa/m

m/s

hPa/m

m/s

hPa/m

m/s

hPa/m

m/s

hPa/m

m/s

3.10

3.20

3.30

3.40

3.50

3.60

3.70

3.80

3.90

4.00

dove:

V = Portata

R = Perdite di carico continue in hPa/m

v = Velocità in m/s

–

–

–

–

–

–

–

–

44.73

3.85

–

–

–

–

–

–

–

–

47.40

3.98

–

–

–

–

–

–

–

–

50.15

4.10

–

–

–

–

–

–

–

–

52.98

4.23

–

–

–

–

–

–

–

–

55.87

4.35

–

–

–

–

–

–

–

–

58.84

4.48

–

–

–

–

–

–

–

–

61.88

4.60

–

–

–

–

–

–

–

–

65.00

4.72

–

–

–

–

–

–

–

–

68.18

4.85

–

–

–

–

–

–

–

–

71.44

4.97

d’acqua in l/s