Walter Venables wrote:
[color=blue]
> I know this has been asked before but I can't find it anywhere.
>
> What is the difference between room temperature and the temp
> of the fermenting wert?[/color]

What is the difference between the inside and outside temperatures
of you abode? It depends on the activity of your furnace, wood
stove, etc. and upon the quality of your insulation.

In the case of fermenting wort, the conversion of sugar into
alcohol generates internal heat to the wort.