ddahlgren wrote:The only baffle is one that covers about half of the flue outlet but nothing that adds to the flow path of the flue. The only way to do the heated air would be down the outside as the firebox fills the whole stove. I would think even going outside the air would have to be a good deal warmer than what comes off the floor
A baffle that extends out should be more effective. A secondary air tube on the front lip of the baffle is a good spot. Don't forget you need access to clean that area.
I don't think heated primary air is such a concern. By the time it filters up the fire pot to the burning zone it will be pretty hot already.