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Old Jan 3rd 2018, 6:10 pm   #31
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Default Re: Heating Options

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Originally Posted by MrBife View Post
Back boiler connected direct to UFH is no good as the temperature of the water is too high.


Carpets on top of UFH are not good as they stop the heat from warming the room.
Standard manifolds for hydronic radiant heat systems have a bypass thermostat; simple and reliable, it only lets hot water into the manifold to maintain the preset temperature. They're made to attach to standard boilers, which run at 60 + degrees.


Actually, you can have carpets; while not ideal from an engineering standpoint, they have less effect that you would expect. in practice, the carpet heats up and becomes the radiator. Our floors are 70% covered by carpets.

You can use parket flooring too; some types may be used with underfloor heat. You need a special underlayer that conducts heat.
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Old Jan 3rd 2018, 10:53 pm   #32
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Default Re: Heating Options

Sorry, I'm just exploring different concepts / ideas (and having fun) ....

The below ideas to be used as a boost for air con upstairs, as nice and simple solutions without any extra water circuits (especially inside flue), and no taking up of floors etc:

What about the flue of a wood/pellet etc burner that goes straight up through the downstairs ceiling to the room above, where it is encased in a box with an inlet air vent from room at bottom and heated room air outlet higher up (simple air-air heat exchanger)? Hot outlet at top is not ideal tho...

SO how about just a nice shiny exposed 'straight up and out' flue pipe (with a wire guard) going up through the downstairs ceiling and then up through the upstairs room and out through the roof (for radiant and convected heat in this case). I really like the 'minimalism' of this

Also, what about simple (closable) grills in lower ceiling / upper floor to allow hot room air to move upstairs? Again simple.

Any big cons, No-No's etc with those types of ideas?

Also, presumably if you extract too much heat from flue you can get problems with updraught and condensation too?

EDIT: There isnt actually hardly any loft space to insulate (sorry, Essex grammar there), just in the very apex, under 2m wide. The idea will be to affix foam insulation to the inside of the sloping roof ceilings. These are reinforced concrete (tiles on top, but not sure how much the tiles do in terms of rain protection given that its concrete underneath them).
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Last edited by Midgo; Jan 3rd 2018 at 10:59 pm.
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Old Jan 4th 2018, 6:47 am   #33
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Default Re: Heating Options

Quote:
Originally Posted by Midgo View Post
Sorry, I'm just exploring different concepts / ideas (and having fun) ....

The below ideas to be used as a boost for air con upstairs, as nice and simple solutions without any extra water circuits (especially inside flue), and no taking up of floors etc:

What about the flue of a wood/pellet etc burner that goes straight up through the downstairs ceiling to the room above, where it is encased in a box with an inlet air vent from room at bottom and heated room air outlet higher up (simple air-air heat exchanger)? Hot outlet at top is not ideal tho...

SO how about just a nice shiny exposed 'straight up and out' flue pipe (with a wire guard) going up through the downstairs ceiling and then up through the upstairs room and out through the roof (for radiant and convected heat in this case). I really like the 'minimalism' of this

Also, what about simple (closable) grills in lower ceiling / upper floor to allow hot room air to move upstairs? Again simple.

Any big cons, No-No's etc with those types of ideas?

Also, presumably if you extract too much heat from flue you can get problems with updraught and condensation too?

EDIT: There isnt actually hardly any loft space to insulate (sorry, Essex grammar there), just in the very apex, under 2m wide. The idea will be to affix foam insulation to the inside of the sloping roof ceilings. These are reinforced concrete (tiles on top, but not sure how much the tiles do in terms of rain protection given that its concrete underneath them).
We have a wood-burning stove in our sitting room which backs on to our bedroom in our old folks' bungalow. Our fitted wardrobe becomes one of the warmest rooms in the house when the stove has been on all evening. Open the wardrobe doors for more heat or take your warm clothes out in the morning and put them straight on!

Seriously though, make sure any heaters are fitted to interior walls, not external walls, and use flues to heat any upstairs bedroom where you can.
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Old Jan 4th 2018, 12:00 pm   #34
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Default Re: Heating Options

I have been warned about potential pitfalls of taking heat out of flu by a mate at home

I like the idea of a warm cupboard where I can hide from family life every now and then

I did not say that
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Old Jan 4th 2018, 1:33 pm   #35
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Default Re: Heating Options

If you cool the flu too much, you can lose the updraft; however, in practice this is pretty rare, unless you use a long water jacket.
The temp leaving the burner will be around 500C. at 100C, there will still be plenty of draft.

Some modern high efficiency burners extract more heat to the room and have a lower outlet temperature; they usually have fans and water based heat exchangers, double insulated flus, thick instruction books, and very high prices.

You can heat in any of those ways, the mild climate here means you rarely need much.
Thick insulation is good, but if you don't have the space, even 30mm will do the job.
Double glazed windows are good; here's a tip.
Most windows never get opened, so why spend the money on ones that open?
Half my windows are one piece of double glazing, set in a thin wooden frame attached to the concrete.
More light, looks better, less cost, easier to clean.
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