Actual flow velocity:

Calculation of the Reynolds number:

Pipe resistance factor (smooth pipe can be assumed):

λ = (1,8 · lg Re – 1,5)–2 = (1,8 · lg 62401 – 1,5)–2 = 0,020

Pressure drop figures:

2 bends

ζ1  =2 · 0,09 = 0,18

 p. 211

1 Globe valve

ζ2  = 6,5

 p. 207

1 ball valve (50 % open)

ζ3  = 30

 p. 207

1 check valve

ζ4  = 15

 p. 213

1 vortex meter

ζ5  = 3

 p. 213

Σζ = ζ1 + ζ2 + ζ3 + ζ4 + ζ5 = 0,18 + 6,5 + 30 + 15 + 3 = 74,68

Pressure loss in the pipeline:



The task

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