Anyone know about electric underfloor heating. I am an electrician and
install quite a lot of systems, but I'm not convinced it can work as a main
source of heat, particularly in a conservatory. Does anyone have any
figures for heat loss rates in conservatories?
On Thu, 2 Dec 2010 11:20:07 -0000, "Stephen Biddle"
Where, Alaska or Georgia, London? What kind of floor? What's under the
floor? What insualtion under the floor? What insulation in the
building? What kind of glass? How much glass? (I assume when you say
conservatory, you are referring to what we call a 'gree house'...)
It's a double glazed extension on to a house in England floor is 4M x 4M
roof 3M high floor covering ceramic tiles with electric element underneath.
The element is set to 30C max. My concern is whether a ceramic tile with an
underside temperature of 30C can heat the air in the room to 23C with an
outside temperature of 0C ie temperature differential accros tile 7 and
inside to outside 23. Floor area 16 sq M outside surface about 52 sq M glass
has U factor 1.1
You need to know how many watts/sq meter also. Are you sure the U factor
is 1.1? I can't even find a listing for a double glazed window that
Just by comparison to my heated tile bathroom, I doubt it will heat
enough. I keep my tile at the same temperature (although it will go much
higher). The room is toasty warm but I have a small amount of forced air
heat and all the walls are R 17 with only a small window.
By comparison, your huge glass area only has a R value of 0.9 if the U
factor is correct. At best it would only be R 3 or so anyway.
Radiant heat works differently. You're not trying to heat just the
room air. It's a different heating mechanism. Easiest thing to do is
to contact a manufacturer and have them tell you what you need to heat
such a space to whatever comfort level you need (this is different
than what you might desire due to the different heating mechanism),
then compare that to what you have.
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