Gas ramp dimensioning for gas burners
dreizler A 3001 E - 18.12.2015 | A 2047 - 1.14 | EN - 07.07.2014
99
31 Gas ramp dimensioning for gas burners
A gas ramp is dimensioned according to its
–
Supply pressure
–
Burner capacity (throughput)
–
Flow speed
NOTICE:
A flow speed at higher pressure losses of >30m/s must not be surpassed.
31.1 The gas ramp nominal width
The nominal width of the gas ramp depends on the available gas pressure connection P
E
(gas flow pres-
sure during operation).
P
E
= Gas flow pressure at burner inlet
P
Head
= Required head pressure in burner for reaching full burner load
P
Gas ramp
= Pressure loss in the gas ramp
P
Combustion chamber
= Boiler combustion chamber pressure
31.2 The required head pressure
For dreizler
®
gas power burners, specific head pressure values must be adhered to, see diagrams 1 - 6
below.
Pressure loss of the gas ramp can be calculated depending on natural gas throughput and nominal width
of the gas ramp as shown in the following diagrams 1 - 6. Also the boiler combustion chamber pressure
must be taken into consideration.
P
E
= P
Head
+
P
Gas ramp
+ P
Combustion chamber
Burner size
Capacity range
Head pressure
121, 201, 301, 601.1, 601
< 1.2 MW
12 mbar
1001F1, 1001,1501
> 1,2 MW < 1,8 MW
18 mbar
1501F1
> 2 MW
25 mbar
2001
> 2,5 MW
30 mbar
1001F2
< 2,0 MW
40 mbar
3001, 5001.1F1, 5001.1, 5001.2
> 3,0 MW < 4,2 MW
50 mbar
1501F2
> 3.0 MW
60 mbar
5001. 5001.3, 5001.4, 10001.1,
10003.1, 10003.2
> 4,8 MW < 10,5 MW
75 mbar
5001.1F2
> 5,3 MW
100 mbar
10001.2
> 10,0 MW
90 mbar
10003.3, 10003.4, 10003.5,
10003.6
> 13,5 MW < 30 MW
130 mbar
