You again! 
chapeau
These graphs I mentioned were not "scientific" ones, just simple pictorial indications of how heat gradient (supposedly) varied between 1) Ideal circs. 2) rads 3) UFH , so no detail about room conditions etc.
I tried to post one, but it wouldn't stick for some reason.

But you will soon be disappointed if you think you can easily keep your conservatory warm in the winter. IMO.
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