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Old 11-09-2020, 02:27 PM   #7 (permalink)
freebeard
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Quote:
It would be a simple matter to have a fully ducted and sealed system that draws air from the bottom and sends it around through the top.
Exactly describes my friend's fireplace. I've helped them pull the sheet metal insert and re-grout the firebrick, twice.

Quote:
Originally Posted by Piotrsko
Better heat transfer efficiency will occur if you slow flow through the system a bit.
I suggested a manifold. It could be a cap across the full width with a single fan at each end. This would slow the airflow and stop reversion.
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