Satamax Antone wrote:This will not work. At the T the gasses will take the path of least resistance.
Satamax Antone wrote:A wood stove, even some of the most efficient tulikivi are nowhere near as efficient as a rocket stove.
Satamax Antone wrote:I haven't read all of what Allen wrote, but he usualy warns people that, a rocket stove elswhere than in the part of the house you're living in is a chore, rather than a pleasant wood fire.
Satamax Antone wrote:May be a batch box would be more suited. At Donkey's site, one of the participants was calculating the heat output of a batch rocket, and in half an hour, it outputs enough to raise 55gallons of water, only 8 degrees celcius. So, that means if you start at 20C°, and want to near boiling point, you'd be burning wood for about 5 hours, and you'd have put about 200kg in there.
Satamax Antone wrote: When you say you don't want heat to be lost to the outside world, if your house is realy well insulated, and you have room and muneys, you could look into seasonal heat storage.
allen lumley wrote:. . . the latent heat of evaporation, which with your present wood stove is lost to you, when the temp of the high temp exhaust falls below 212 dF, it is because theHigh temp exhaust gases have
given up that latent heat and because we have been given that boon /gift we have to del with the water vapor
There are two kinds of efficiency, combustion and heat transfer efficiency. When the stove is very hot and roaring, the combustion efficiency is high. So the particulates and CO are burned as well. But at the same time the end temp will inevitably rise because of the higher rate of heat production, lowering the heat transfer efficiency.
And to make the picture complete, overall efficiency is the combustion efficiency multiplied by the transfer efficiency. For example, when the comb. eff. is 90% and transfer eff. is 80%, overall eff. is 72%. The other way around, when combustion is 85% and transfer 95% you'll get 80.75% as overall. That last one is ridicously high by the way, I have seen that figure only a couple of times during the years testing all my experimental stoves.
And oh yes, the excess air is another factor which do influence the numbers a great deal.