Dr Skip <drskip <at> gmail.com> writes:

> I think this is being over-thunked! If not by the window, say on the
> other side, you'd have a room that was 50 degrees on one side by the
> window (even more leakage in the old days), and 80 degrees + (F) on the
> other! Grandma certainly would not have put up with that! She'd tell you
> you'd catch a cold right in the living room... ;)

And yet ... that's exactly the way things work if all you have is a fireplace or
a simple electric radiator to heat the room with ... Now start thinking about
energy recovery: put a slow windmill between the hot and the cold parts of the
room and use it to charge your cell phone battery ... ;-)

Peter P.



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