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re: circulating solar heat
23 mar 1999
dave gower wrote:
>the normal setup for forced air is both outlet and inlet ducts in the
>floor. this is fine when the heat source is the furnace, but for
>circulating solar heat not so fine, because the warm air will simply sit
>on the ceiling while the cold air scoots along the floor.
would the location of the heat source be that important? why wouldn't
the warm air from the furnace decide to go sit on the ceiling too?
>so you need powerful ceiling fans to drive the warm air down towards
>the registers.
ceiling fans aren't that powerful. grainger's $140 110w 4f424 56"
diameter reversible fan moves 27,500 cfm, equivalent to about 28
20" window box fans. how much airflow do we need?
nick
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