Viessmann VITOSOL SERIES Technical Manual page 127

Information regarding design and operation
Flow rate Flow velocity in m/s
(total collector area)
Pipe dimension
l/h l/min DN 10
Dimensions
12 x 1
350 5.83
400 6.67
450 7.50
500 8.33
600 10.00
700 11.67
800 13.33
900 15.00
1000 16.67
1500 25.00
2000 33.33
2500 41.67
3000 50.00
Recommended pipe dimension
Pressure drop of the pipework
For water:glycol mixtures at temperatures higher than 50 °C.
Flow rate Pressure drop per m pipe length (including valves) in mbar/m
(total collector area)
Pipe dimension
l/h DN 10
Dimensions
12 x 1
100
125
150
175
200
225
250
275
300
325
350
375
400
425
450
475
500
525
550
575
600
625
650
675
700
725
750
775
800
825
850
875
900
925
950
VITOSOL
(cont.)
DN 13 DN 16
15 x 1 18 x 1
— 0.73 0.48
— 0.84 0.55
— 0.94 0.62
— — 0.69
— — 0.83
— — 0.97
— — —
— — —
— — —
— — —
— — —
— — —
— — —
DN 13 DN 16
15 x 1 18 x 1
4.6
6.8
9.4
12.2
15.4 4.4
18.4 5.4
22.6 6.6
26.8 7.3
9.0
10.4
11.8
13.2
14.8
16.4
18.2
20.0
22.0
DN 20 DN 25 DN 32
22 x 1 28 x 1.5 35 x 1.5
0.31 —
0.35 0.23
0.40 0.25
0.44 0.28
0.53 0.34
0.62 0.40
0.71 0.45
0.80 0.51
— 0.57
— 0.85
— 1.13
— —
— —
DN 20
22 x 1
2.4
2.8
3.4
3.8
4.4
5.0
5.6
6.2
6.8
7.4
8.2
8.8
9.6
10.4
11.6
DN 40
42 x 1.5
0.11 —
0.13 0.09
0.14 0.10
0.16 0.12
0.19 0.14
0.22 0.16
0.25 0.19
0.28 0.21
0.31 0.23
0.47 0.35
0.63 0.46
079 0.58
0.94 0.70
DN 25
28 x 1.5
12
2.0
2.2
2.4
2.6
2.8
3.0
3.4
3.6
3.8
4.2
4.4
4.8
5.0 1.8
5.4 1.9
5.8 2.0
6.0 2.2
6.4 2.3
6.8 2.4
7.2 2.5
7.6 2.6
8.0 2.8
8.4 2.9
8.8 3.0
VIESMANN
127