jophysx
Burning Hunk
As you say, the top of the chimney is blocked off in a standard install, so hot air won't be flowing up and out the chimney. However if there is no blockoff plate at the bottom, hot air generated by the stove will convect up into the chimney space. That heat will be lost to the masonry and flow by conduction to the outside world (unless the chimney is entirely interior to the house). A blockoff plate at the bottom will reduce the rate of heat loss up into the chimney.I understand the part about heating the chimney but how does it get out to mother nature if the TOP of the chimney is sealed?
(Not arguing, trying to learn.)
-Jim