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Why the height of chimney is kept low in locomotive boiler?
A short chimney is provided on the smoke box to discharge hot gases from the smoke box into the atmosphere. The height of the chimney is kept low so that when the locomotive is passing through a tunnel or under a bridge, the chimney does not strike against the top.
Why chimney is used in a boiler?
A Chimney is a self standing structure for venting hot gases from a boiler to the outside atmosphere [1] and to disperse them at a considerable height.
What is a double chimney on a steam locomotive?
The simplest and easiest method to improve draughting is to have two blastpipes, each exhausting through a different orifice in a double chimney. This had two blastpipes, but each nozzle formed a cross-section of four circles joining in the centre, so that the steam emerged as four jets that met in the middle.
What is the purpose of a chimney?
Again, the main purpose of a chimney is to vent the products of combustion from your home. That function is crucial because the products of combustion contain hazardous and noxious gasses. One of the hazardous gasses your chimney needs to remove from your home is carbon monoxide.
Why are chimneys used?
The primary function of the chimney is to direct the smoke away from the stove and out of the house. However, this is not the only function of the stove, as it must also: Ensure that enough air is drawn into the stove for the fire to burn clean.
Why is a chimney provided in a boiler?
Mainly chimney is provided in boiler to provide natural draft. Even though force draft fan provided in addition with to make it more effective.The difference between atmospheric pressure and the pressure existing in the furnace or flue gas passage of a boiler is termed as draft.
How does a locomotive boiler work?
As the name suggests it is a locomotive boiler means it is movable so that we don’t need to fit chimney in it, the flow of air over the stack removed the flue gases due to the pressure difference between the grate and the outside.
Why do we use a stack instead of a chimney?
In this type of boiler we use the stack, instead of a chimney because as the name suggests it is a locomotive boiler means it is movable so that we don’t need to fit chimney in it, the flow of air over the stack removed the flue gases due to the pressure difference between the grate and the outside.