In a thermal power plant : Why the Deaerator is placed at height and mostly at

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In a thermal power plant : Why the Deaerator is placed at
height and mostly at 15.5mtr?

Question Posted / bmohanta34

9 Answers
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In a thermal power plant : Why the Deaerator is placed at height and mostly at 15.5mtr?..

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

In a thermal power plant : Why the Deaerator is placed at height and mostly at 15.5mtr?..

Answer / dineshsingh

for net positive suction head for feed pump

Is This Answer Correct ?

57 Yes

8 No

In a thermal power plant : Why the Deaerator is placed at height and mostly at 15.5mtr?..

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

In a thermal power plant : Why the Deaerator is placed at height and mostly at 15.5mtr?..

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

In a thermal power plant : Why the Deaerator is placed at height and mostly at 15.5mtr?..

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

In a thermal power plant : Why the Deaerator is placed at height and mostly at 15.5mtr?..

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

In a thermal power plant : Why the Deaerator is placed at height and mostly at 15.5mtr?..

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

In a thermal power plant : Why the Deaerator is placed at height and mostly at 15.5mtr?..

Answer / arun

for creating pressure difference

Is This Answer Correct ?

10 Yes

13 No

In a thermal power plant : Why the Deaerator is placed at height and mostly at 15.5mtr?..

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