I once went under the boiler maker's warranty and found a DIY UFH system.
Trouble was they had no idea how to do it and had laid about 110 m of 10 mm copper tube in carefully cut out plywood and then tiled all over it before testing it.
Not surprisingly the heat loss of the copper tube meant that the temperature of the UFH tube was already at room temperature after only a few metres[/QUOTE]
I don't think so some how.
Not surprisingly to who? Those first few metres must have been literally red hot to dissipate around 2kw of heat in that short distance! And the steam in the pipes must have been pretty much stationary.Trouble was they had no idea how to do it and had laid about 110 m of 10 mm copper tube in carefully cut out plywood and then tiled all over it before testing it.
Not surprisingly the heat loss of the copper tube meant that the temperature of the UFH tube was already at room temperature after only a few metres. There was no easy to solve the problem apart from a completely new installation.
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