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boiler circulation pump

boiler circulation pump

boiler circulation pump

(OP)
hi all
pls help me to understand this.

in power plant, why do we need to put a boiler circulation pump to boiler ? what is the use of it? boiler produce steam @ 200deg (c), h= 700m, Q = 50cu.m/hr.

thanks

RE: boiler circulation pump

Is it not reinjecting the spent steam condensate back into the boiler?

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RE: boiler circulation pump

It is a waste of energy to try to move the condensate back to the boiler using the steam's pressure. Makes the heating loop extremely inefficient

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RE: boiler circulation pump

I suspect there's a language translation issue, and pumposervicio is referring to a boiler feed pump, as opposed to a circulator.  

RE: boiler circulation pump

It's difficult to know  what this circulation pump will do without looking at the drwaing showing where is attached. Generaly in boilers with natural circulation ( where the movwement of water/steam mixture in  boiler tubes is acheived by the means of different water  S.G. at the bottom/top of the boiler),
sometimes certain portions of tubing suffer from overheating - hence need to add "circulation pump"
Critical boilers ( where SG of steam vs. S.G. of water is similar)  need to use this pump(s) to circulate water/steam mixture through the boiler( not your case).

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