ANNEX 8 COEFFICIENTS OF LOCAL RESISTANCE AND FLOWS OF NODES OF HEATING DEVICES

Knot sketch

d1

d2

d3

Coefficient of local resistance x when moving water

The value of the coefficient of leakage a at the speed of water in the riser V , m / s

top down

down up

0.1

0.2

0.3

0.4 and more

15

20

25

15

15

20

15

15

15

2.8

4.6

6.1

5.1

6.1

11.0

0.52

0.45

0.26

0.46

0.42

0.20

0.43

0.39

0.18

0.43

0.37

0.18

15

20

25

15

15

20

20

20

20

1.2

2.9

2.1

10.2

7,8

15.7

0.6

0.6

0.45

0.45

0.45

0.30

0.42

0.42

0.26

0.42

0.42

0.25

15

20

25

32

15

15

20

25

20

20

20

20

1.2

1.9

2.0

2.6

-

-

-

-

0.2

0.35

-

-

0.14

0.23

0.32

0.36

0.12

0.19

0.27

0.28

0.12

0.18

0.27

0.24