Table 1 Testing results of the untreated pipes.

From: Application of a hydrophobic coating to a pressurized pipe and its effect on energy losses and fluid flow profile

Test

PVC90

PVC63

Flow (l/s)

Re

hf (mm)

f

Flow (l/s)

Re

hf (mm)

f

1

1.53

2.31E+04

4.5

0.0257

0.47

1.02E+04

3.0

0.0305

2

1.97

2.98E+04

7.0

0.0240

0.83

1.79E+04

8.0

0.0261

3

2.44

3.69E+04

10.0

0.0223

1.17

2.51E+04

14.5

0.0241

4

2.72

4.11E+04

12.0

0.0216

1.56

3.35E+04

24.5

0.0229

5

3.06

4.62E+04

15.0

0.0215

1.83

3.94E+04

32.5

0.0219

6

3.42

5.16E+04

18.0

0.0206

2.00

4.30E+04

38.0

0.0215

7

3.71

5.60E+04

21.0

0.0204

2.39

5.14E+04

52.0

0.0206

8

4.03

6.09E+04

24.5

0.0202

2.58

5.56E+04

60.0

0.0204

9

4.69

7.09E+04

32.0

0.0194

2.89

6.22E+04

73.5

0.0199

10

5.22

7.89E+04

38.5

0.0189

3.17

6.81E+04

86.5

0.0195

11

    

3.44

7.41E+04

100.5

0.0192

12

    

3.81

8.19E+04

120.0

0.0188

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