Chimneys are designed to pull air towards themselves and hence to remove smoke from the fire. I'd be very suprised if the draft was coming from the chimney.
I was thinking something similar.Chimneys are designed to pull air towards themselves and hence to remove smoke from the fire. I'd be very suprised if the draft was coming from the chimney.
Not quite. The hot air is at a higher pressure. The air pressure of the room is higher than that of outside. Cold air isn't coming down the chimney.I have no great knowledge of physics but... if the room is warm & hot air rises, and outside air is cold and falls, the warm air is sucking out the heat from the room as it rises whilst the cold air is drawn down to replace it.
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