Gas Side Pressure Drop - Riello DR 32 SE FGR Installation, Use And Maintenance Instructions

3.8

Gas side pressure drop

• Gas pressure on the basis of the maximum output developed
by the burner is given by the curves in Fig. 4.
• It represents the pressure drop in the combustion head.
– Natural gas G 20 -
– N.C.V. = 10 kWh/Nm3
The curves were taken in the following conditions:
Combustion head pressure drop
Butterfly valve pressure drop (with valve completely open)
20188797
Technical description of the burner
Pb (Burner output)
Pb (Burner output)
10 GB
• pressure measured at the test point on the pressure switch
downstream from the gas butterfly valve;
• combustion chamber at 0 mbar;
The pressure drop of the completely open butterfly valve is given
in Fig. 5.
[kW]
20198107
[kW]
20198100
Fig. 4
Fig. 5