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What is the difference between premixed and diffusion flame?
Two main different combustion regime: diffusion flame is generated when fuel and oxidizer are provided separately and then mixes with each other and reacts in the mixing zone; while premixed flame is generated when fuel and oxidizer are totally mixed and goes to burning after ignition. The main difference is that premixed flame forms a propagating wave front and diffusion flame tends to be stable. Due to that, premixed flame is more sensitive to acoustics, i.e. flashback and blow-off. On the other hand, the mixing is a key factor for diffusion flame. If mixing is not enough, we suffers with high soot and unburnt hydrocarbon emissions. The flame thickness is different a lot, and premixed flame is much thinner. In terms of environment issue, NOx emission is relatively higher in premixed flame than in diffusion flame due to higher flame temperature. In application, safety is a main concern for premixed flame, so that stabilization is always applied in practice. Diffusion flame is more widely applied, especially on aircraft and power station.
What is the purpose of the tangential slots in an oil burner?
They are to adjust the air/fuel mixture.
Explain oxy- acetylene welding process?
Oxygen and acetylene tanks feed into your torch. When opened, the gases will mix in a chamber in the torch, then flow out of the torch tip. Using a spark lighter, they will ignite causing a flame. This flame can be adjusted to a neutral flame by moving the knobs on the tank regulators.
What is the correct draft for oil burner?
Oil burners are fan powered, the blower drives the exhaust gases away, not draft. Stack draft ,when measured will be a negative # when referenced to atmosphere. Oil burner gases are pushed out by the blower resulting in a positive stack pressure.
What are the 4 main sections of a turbine engine?
compressor section, diffuser section, burner section and turbine
How many layers does the flame have?
The hottest flame has an excess of oxygen and has two zones or cones. A lower-temperature flame, meanwhile, has three zones.
How many zones does and oxidising flame have?
10
How do you get a big flame with the Bunsen burner?
how do you make the flame on busen burner bigger
Is there a flame at the top of a Bunsen burner?
yes there is a flame at the top of a Bunsen burner. there are three different types light blue blue and yellow
What is the yellow flame used for in a Bunsen burner?
As a safety flame, keep it on this if the burner is not in use :)
What is the coolest flame a Bunsen burner produces?
The coolest flame on the Bunsen burner is the yellow-orange flame - approx. 300 0C.
What is the coolest portion of a Bunsen burner flame?
The coolest flame on the Bunsen burner is the yellow-orange flame - approx. 300 0C.
What is the coolest flame on a Bunsen burner?
yellow flame
How do you get a small flame on a Bunsen burner?
To get a small flame on a Bunsen burner, partially close the air hole at the base of the burner to restrict the amount of oxygen reaching the flame. Adjust the gas flow to a low setting before igniting the burner to achieve a small, consistent flame.
What is the color of a roaring flame on a Bunsen burner?
The roaring flame on a Bunsen burner is typically blue in color.
How cold can a Bunsen burner flame be?
A Bunsen burner flame can reach temperatures up to around 1,500 degrees Celsius (2,732 degrees Fahrenheit).
When is the safety flame used on a Bunsen burner?
The safety flame on a Bunsen burner is used when the burner is not in use to prevent accidental fires. It is a small, non-luminous flame that burns with a blue color and is created by adjusting the air hole on the burner.
