why in gas stove pump has whole
see in pic whyyy????
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Answers
Answer:
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Explanation:
In a simple way any liquid fuel is difficult to burn completely because all the portions do not get sufficient oxygen hence incomplete combustion occurs which results in inefficiency and black soot formation.
As compared to that a gas can have a complete combustion if it is premixed with air/oxygen.
That is what is achieved here.
Kerosene is first converted to vapor and then mixed with air before the burning.
Now let us look at the function
The tank contains the kerosene and is also sealed.
You pump air through the pump and create a pocket of compressed air on top of the kerosene.
This kerosene goes through the pipe as liquid kereosene.
The trick is the pipe has a bend that goes over the flame before it ends in the jet nozzle.
So in this bend the kerosene is vaporized. Vapor kerosene comes out of the jet at a precisely defined speed.
The size of the nozzle hole is critical.
This vapor gets mixed with air by the venturi principle.
This forms a mixture which is the premix necessary for complete combustion.
Then it burns in to a blue flame which is typical of complete combustion.
There is such a thing as a flame speed for a given fuel and air mixture.
The vapor coming out should be moving faster than the flame speed, that is the purpose of the jet.
The flame separates from the nozzle and settles down at a a distance where the (slowed down) speed of the vapor / air mixture is equal to flame speed.