elco VGL 06.1200 DP, Руководство пользователя

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29 06/2011 - Art. Nr. 13 018 118C
Overview
Gas valve selection
N.B.:
•
The pressure loss specified in the table
is to be added to the combustion
chamber pressure of the boiler in mbar
with the rated load.
•
The calculated gas flow pressure is to be
complied with at the gas valve inlet. To
calculate the gas flow pressures required
at the transfer station it is also necessary
to take into account the pressure loss of
the gas supply from the transfer station
to the gas valve inlet incl. all valves
contained therein (cut-out valves, com-
pensator, gas counter, TAS, additional
filter, etc.).
•
The operating point of the system must
be within the permissible working range
of the burner.
Example: VGL 06.2100 DP
•
System data:
–
Gas type: natural gas E
–
Required burner power: 1600 kW
–
Combustion chamber pressure with boiler rated load: 3 mbar
–
Gas flow pressure at transfer station with boiler rated load: 30 mbar
–
Gas supply pressure loss with boiler rated load: 1 mbar
•
Selected gas valve: VGD40.065
•
Checking the selection:
–
Gas pressure loss from gas valve (from table): 25 mbar
–
Combustion chamber pressure: 3 mbar
–
Gas supply pressure loss 1 mbar
–
Total 29 mbar
–
Hence: gas flow pressure at transfer station: 30 mbar > 29 mbar
ð
Selection of VGD40.065 correct.
VGL 06.1200
DP
Burner
power
(kW)
MBVEF
412 MBVEF
420 VGD20
Rp2 VGD40
DN65 MBVEF
420 VGD20
Rp2 VGD40
DN65 MBVEF
412 MBVEF
420
Natural gas E Hi = 10.365 kWh/m
3
Natural gas LL Hi = 8.83 kWh/m
3
Propane gas
Hi=25.89kWh/m³
Gas pressure loss (from gas valve inlet)
800
18 15 15 15 21 15 15 15 15
900
23 18 15 15 27 19 15 17 15
950
26 20 15 15 30 21 16 19 15
1000
29 22 16 15 33 23 17 21 15
1100
35 27 19 15 40 28 21 25 15
1200
41 32 23 17 48 33 25 30 15
VGL
06.2100 DP
Burner
power
(kW)
MBVEF
420 VGD20
Rp2 VGD40
DN65 VGD40
DN80
MBVEF
420 VGD20
Rp2 VGD40
DN65 MBVEF
420
Natural gas E Hi = 10.365 kWh/m
3
Natural gas LL Hi = 8.83 kWh/m
3
Propane gas
Hi=25.89kWh/m³
Gas pressure loss (from gas valve inlet)
1100
23 17 15
15
33 25 15 15
1150
25 18 15
15
36 27 15 15
1200
27 20 15
15
40 29 17 15
1250
30 22 15
15
43 32 18 15
1300
32 23 17
15
47 34 20 15
1400
37 27 19
15
54 40 23 15
1500
43 31 22
16
62 46 26 15
1600
49 35 25
18
71 52 30 17
1700
55 40 28
20
80 59 33 20
1800
62 45 32
22
89 66 37 22
1900
69 50 35
25
100 74 42 25
2000
76 55 39
28
- 82 46 27
2100
84 61 43
30
- 90 51 30
EN
VGL 06.1600
DP
Burner
power
(kW)
MBVEF
412 MBVEF
420 VGD20
Rp2 VGD40
DN65 VGD40
DN80
MBVEF
420 VGD20
Rp2 VGD40
DN65 MBVEF
412 MBVEF
420
Natural gas E Hi = 10.365 kWh/m
3
Natural gas LL Hi = 8.83 kWh/m
3
Propane gas
Hi=25.89kWh/m³
Gas pressure loss (from gas valve inlet)
800 18 15 15 15 15 21 15 15 15 15
900 23 18 15 15 15 27 19 15 17 15
950 26 20 15 15 15 30 21 16 19 15
1000 29 22 16 15 15 33 23 17 21 15
1100 35 27 19 15 15 40 28 21 25 15
1200 41 32 23 17 15 48 33 25 30 15
1300 - 37 26 20 15 56 39 29 - 17
1400 - 43 31 23 17 65 45 34 - 20
1500 - 50 35 26 20 74 52 39 - 23
1600 - 57 40 30 22 85 59 44 - 26