Mechanical Engineering - Steam Boilers and Engines - Discussion
Discussion Forum : Steam Boilers and Engines - Section 1 (Q.No. 1)
1.
The object of producing draught in a boiler is
Discussion:
14 comments Page 2 of 2.
Saikumar said:
1 decade ago
A fuel-heated boiler must provide air to oxidize its fuel. Early boilers provided this stream of air, or drought, through the natural action of convection in a chimney connected to the exhaust of the combustion chamber.
Since the heated flue gas is less dense than the ambient air surrounding the boiler, the flue gas rises in the chimney, pulling denser, fresh air into the combustion chamber.
Since the heated flue gas is less dense than the ambient air surrounding the boiler, the flue gas rises in the chimney, pulling denser, fresh air into the combustion chamber.
(1)
A.N Sanjrani said:
1 decade ago
I think in process of combustion; drought means from suction to exhaust as in a first step air and fuel ratio is sucked and then after power accomplishment, from exhaust all flue gases were leave the chimney.
BEERESH said:
1 decade ago
Draught means partial pressure between atom to the chimney. Sufficient air to be needed for complete combustion, after combustion elve gas to be exhaust. So we have balance the pressure.
Rn mahapatra said:
1 decade ago
I can't understand this kindly explain me that why the answer is d?
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