You can put in two vents; one as high as you can, and a second as low as
you can. Hot solarium air will rise and move into the colder space on
the other side, while at the same time drawing air in from the bottom
vent. This is as passive as you can get. If you want to augment it, you
could put a solar powered exhaust fan at the top vent to force the issue.
My parents had a "Wilkening Fireplace" that worked on this principle,
and they heated the whole house in Minnesota with it.
bp
<part15sbs{at}gmail{dot}com>
On 11/4/2020 9:54 AM, Robert Andrews wrote:
Hi folks,
I have a solarium attached to an unheated house and there is a
bathroom window about 3x3' between them open. Does anyone have any
magic tricks up their sleeves to move the warm solarium heat into the
house without using power? The temp difference the other day was 106
in the solarium and 55 in the house.
Best,
Robert
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