26
Fig. 3
View of the Lamborghini burner
Always use proper and good quality fuel (heating oil
or winter fuel is not a good choice). The use of a high
quality fuel is a guarantee of repeatability of the burn-
er’s operating performance (no need to periodically ad
-
just composition of the fuel / air mixture, and the fuel
nozzle does not tend to wear out so fast).
7 problem
Diagnosis
Prevention
Buzzing burner – characteristic vibrating noise, burner
assembly and boiler assembly are shaking in the reso-
nance (exhaust stream and jet pump inside the boiler).
Change burner / boiler working conditions:
•
Change the fuel (density, calorific value);
•
Different atmospheric pressure than in the original
adjustment location;
•
Different humidity of the air in the machine’s place
of operation.
When we have a reduction of density of the air, there is, at equal volume, a lower amount of oxygen, so to burn
the same amount of fuel, it is necessary a bigger air volume. Since there is no possibility of increasing the air flow
through the burner ventilation, it is necessary to reduce the amount of fuel to be burned down. Of course with this
setting there is a reduction in the actual thermal power of the burner.
Attention: The work fields on the entire documentation refer to tests with an air temperature of 15 °C and Altitude
of 0 m above sea level (slm).
To quantify this reduction refer to the table below where the correction factor fc is returned to the different oper
-
ating conditions:
28 When we have a reduction of density of the air, there is, at equal volume, a lower amount of oxygen, so to burn
the same amount of fuel, it is necessary a bigger air volume. Since there is no possibility of increasing the air flow
through the burner ventilation, it is necessary to reduce the amount of fuel to be burned down. Of course with this
setting there is a reduction in the actual thermal power of the burner.
Attention: The work fields on the entire documentation refer to tests with an air temperature of 15 °C and Altitude
of 0 m above sea level (slm).
To quantify this reduction refer to the table below where the correction factor fc is returned to the different oper
-
ating conditions:
• hearth input Qf = 1,259 kW
• pressure in combustion chamber Pcc = 6.2 mbar
• altitude installation: 1000 m slm
• Inlet air temperature: 50 °C
