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 1 of 2.
Rakesh yadav said:
6 years ago
Draught producing mainly two types.
One is mechanical & second is natural. Mechanical draught is producing by using an induced fan which sucks flue gases take place in the chimney.
One is mechanical & second is natural. Mechanical draught is producing by using an induced fan which sucks flue gases take place in the chimney.
(3)
Rupesh patil said:
6 years ago
Boiler draught is defined as the small difference between the pressure of outside cold atmospheric air and that of gases within a furnace or chimney. The draught is necessary to force air through the fuel grate to help in proper combustion of fuel and to remove the products of combustion.
(3)
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)
Rn mahapatra said:
1 decade ago
I can't understand this kindly explain me that why the answer is d?
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.
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.
Shivram said:
9 years ago
Good @Saikumar.
Abdalah said:
9 years ago
I want know tube thickness size and long for boiler 3 ton per hours also plate thickness. Please describe it.
Nishu said:
9 years ago
The correct answer will be C.
Malaz said:
8 years ago
I can't understand. Please explain me that why the answer is D.
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