PREMANT district heating pipe

Pressure drop chart

PRE 6.200

Water temperature 80 °C

Surface roughness e = 0.045 mm

(1 mmWS = 9.81 Pa)

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344.4 mm 312.7 mm

(DN 350)

(DN 300)

263.0 mm

(DN 250)

210.1 mm

(DN 200)

200

300

500

1000

2000 3000

Q·860

m ̇ =

Flowrateinkg/h

m ̇ ≈

∆ T

Q =

P

o

w

e r r

e q u i r

e m e n t i n k W

∆T =

Temperature difference, VL(flow)/RL(return) in °C

160.3 mm

(DN 150)

132.5 mm

(DN 125)

107.1 mm

(DN 100)

82.5 mm

(DN 80)

70.3 mm

(DN 65)

54.5 mm

(DN 50)

43.1 mm

(DN 40)

37.2 mm

(DN 32)

29.1 mm

(DN 25)

21.6 mm

(DN 20)

50

100

5

10

20

30

50

100

200

300

500

mmWS/m

Pressure loss ∆p

5000 Pa/m

23.5.2023 BGP

Subject to technical changes

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