In a thermal power plant : Why the Deaerator is placed at
height and mostly at 15.5mtr?
Answers were Sorted based on User's Feedback
Answer / him295
so as to net positive suction head( NPSH) for the boiler
feed pump(BFP) in conjucture with booster pump
Is This Answer Correct ? | 105 Yes | 9 No |
Answer / dineshsingh
for net positive suction head for feed pump
Is This Answer Correct ? | 57 Yes | 8 No |
Answer / khaled lamary
By putting the dearator at heigt we guarantee vapor doesn't
form at the suction area of feed water pumps so cavetation
phenomenun in the impellers can be prevented.
Is This Answer Correct ? | 24 Yes | 4 No |
Answer / nisarg
Deaerator at height not only provides Available suction head at boiler feed pump at higher side than required NPSH but also makes re-circulation valve discharge to remain in liquid state and not the gaseous state. because feed water temperature to the BFP (and also the temperature after the throttling in ARC valve) is lower than the saturation temperature of the return line of re-circulation to deaerator.
Is This Answer Correct ? | 15 Yes | 3 No |
Answer / rahul varma
By putting deaerator at height, vapour doesn't form at the suction area of feed water pumps so cavitation phenomenon in the impeller can be prevented.
also to provide NPSH.
Is This Answer Correct ? | 3 Yes | 1 No |
Answer / deepen mallick
Vapour Pressure being one of the important constituent for determining NPSHA as opposed to NPSHR
Is This Answer Correct ? | 2 Yes | 1 No |
Answer / hasan ahtesham
It is use to increase pressure of water from dearator, n if
we will not use it then due to temperature above 100 degree,
if pressure falls then there will be phase change.
Booster Pumps are used in applications where the normal
system pressure is low and needs to be increased...
Is This Answer Correct ? | 9 Yes | 9 No |
Answer / ashish gupta
because heater intend for use with lp exhaust steam as the feed outlet temp is united such that an even suction is mentained
Is This Answer Correct ? | 0 Yes | 4 No |
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