Condensation from flue
- Thread starter hagi
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ive highlighted your errors, if you cant see than your obviously clueless. You have not the first clue about science, boilers, heating or plumbing so do everyone a favour and f%$$ off.
One plumber in an empty room could start a fight. With two or three, it's better than TV 
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It's no good being abusive to hide your stupidity. No-one else is supporting your astonishing dopiness. Bet you're starting to feel a bit lonely eh? Worra plonka.
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namsag
Your wrong joe a gas boiler and system should be set up to a certain flow and return temp and as it gets hot it will carry on condensing and you will continue to see the steam because it doesnt go past the point that the flue gases condense
unlike a car that gets that hot it passes the point at which the exhaust fumes can be seen in condensed form
unlike a car that gets that hot it passes the point at which the exhaust fumes can be seen in condensed form
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It's all down to the temperature that water vapour can remain as water vapour. Whether it is in a cold car exhaust or a condensing boiler the principle is the same. The vapour reaches a point when it is no-longer able to remain as a vapour - and so condenses. In a cold car exhaust you see a plume of water droplets expelled into the air and water dribbles out the end. Exactly the same thing occurs in a condensing boiler.
In a hot exhaust it doesn't reach that critical temperature and is then expelled as a gas. In an old boiler a very similar thing occurs.
It's schoolboy physics.
In a hot exhaust it doesn't reach that critical temperature and is then expelled as a gas. In an old boiler a very similar thing occurs.
It's schoolboy physics.
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namsag
Yes its school boy physics . But you said it was like a car exhaust.
That was a very poor example to give as the temp of that is not controlled like a condensing boiler which is set up to a certain temp range to continue to condense and be visible
That was a very poor example to give as the temp of that is not controlled like a condensing boiler which is set up to a certain temp range to continue to condense and be visible
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But the OP wanted to know why a condensing boiler was different in plume output to an earlier non-condenser.
In this regard the exhaust explanation is entirely accurate. It's all to do with temperature and a few other things (Boyle's Law).
In this regard the exhaust explanation is entirely accurate. It's all to do with temperature and a few other things (Boyle's Law).
I think joe's explanation to a novice, is a decent enought answer, at least it allows you to grasp the idea, explained in the simplest of terms.
(Sorry Forum )
(Sorry Forum
)
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namsag
Really easy to get the exact answer of what condensing boilers are about and the physics behind them
www.google.co.uk
www.google.co.uk
you had the answer before joe opened his gob. Just ignore everything after gavindas last post.
But if the boiler is condensing, all the water vapour in the flue gasses are turned into water, which exits via the condensor pipe into the drain. So steam coming out of the flue pipe would suggest that the boiler is not condensing.
The way of confirming this is see how the amount of "steam" varies with the return temperature of the boiler.
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