Regarding the circulation problem, you might want to look at the 'ecofan': http://www.ecofan.co.uk/woodstove-ecofans.html http://www.ecofan.co.uk/woodstove-eco

Regarding the circulation problem, you might want to look at the 'ecofan': http://www.ecofan.co.uk/woodstove-ecofans.html http://www.ecofan.co.uk/woodstove-ecofans.html It's a heatsink with a peltier sandwiched in the middle that drives a fan. Works pretty well for wood burners. Also it's just fun to get electrical energy from your stove :)