Elektrogas VMR Series - Gas Flow Chart and Selection; Flow Chart Explanation; Formula for Gas Conversion

ELEKTROGAS – TECHNICAL MANUAL
6-13
AIRGAS
VkV ⋅=
1
0.1 0.5 0.3 0.4 0.2 0.6 0.7 0.8
1 5 2 3 4
10
6 7 8
0.2
50 30 40 20
100
60 70 80
200
0.2
0.3
0.2
0.3
0.3
0.4
0.4
0.5
0.6
0.5
0.4
0.7
0.8
0.8
0.7
0.6
0.5
0.7
0.6
0.8
1
1
DN 125
DN 80
DN 65
DN 100
DN 150
1
100
80
108
3
2
2
2
3
4
3
5
4
7
6
6
5
4
6
7
5
8
7
8
10
30
10
20
20
20
30
40
30
60
50
60
50
40
40
50
70
60
70
80
800
200
100
80
70
100
200
300
400
500
600
300
200
400
500
300
400
500
600
700
700
800
1000
600
800
700
1000
1000
2000
5000
4000
3000
2000
2000
4000
3000
3000
5000
4000
5 2 3 4
10
8 7 6
50 20 40 30 80 70 60
100 200 300 800 700
1000 2000
5000
Rp 1/2-OTN
Rp 3/8-OTN
Rp 1½
Rp 1/2
Rp 3/8
Rp 1
Rp 3/4
Rp 1¼
Rp 2
Air
dP [mmH O]
2
dP [mbar]
V [Nm³/h]
0.1
0.3
0.2
0.6
0.5
0.4
0.7
0.8
1
2
4
3
8
7
5
6
10
3000
60
30
20
50
40
100
70
80
200
800
400
300
700
500
600
1000
2000
Natural gas Town gas LPG
Rp 1/4-OTN
Gas flow chart
(Pressure drop)
Fig. 4
Formula of conversion
from air to other gases Tab. 3
15°C, 1013 mbar, dry
Gas type Specific gravity
ρ
[Kg/m³]
GAS
.
k
ρ
251
=
Air 1,25 1,00
Natural gas 0,80 1,25
Town gas 0,57 1,48
LPG 2,08 0,77