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The number of passes

The pipe number

So the heat exchange area of nominal value/calculation

Tube side channel cross-sectional area of tube side flow velocity of 0.5 m/SEC when traffic m/hr

Nominal pressure

The pipe length (m)

Phi 25 x 2.5

1500

2000

3000

4000

6000

Phi 25 x 2

159

1

14

1.51.62

22.17

33.27

0.0044 /
0.0049

7.92 /
8.82

0.25

219

1

26

3/3.00

4/4.02

6/6.06

8/8.1

0.0082 /
0.0090

14.76 /
16.20

0.6

2

26

3/3.00

4/4.02

6/6.06

8/8.81

0.0041 /
0.0045

7.38 /
8.01

1.0

273

1

44

5/5.08

7/5.18

10/10.26

14/13.72

21/20.63

0.0138 /
0.0152

24.84 /
27.36

1.6

2

40

5/4.62

6/6.19

9/9.33

12/12.47

19/18.76

0.0063 /
0.0069

11.24 /
12.42

2.5

325

1

60

7/6.93

9/9.28

14/14.00

19/18.71

28/28.13

0.0188 /
0.0208

33.84 /
37.44

0.6

2

56

6/6.47

9/8.66

13/13.05

17/17.46

36/26.26

0.0088 /
0.0097

15.84 /
17.46

1.0