A friend with an off-grid cabin w/o a source of firewood showed me these (he liked not hauling out propane bottles). I showed him an RMH. We will see what he does next....
"You must be the change you want to see in the world." "First they ignore you, then they laugh at you, then they fight you, then you win." --Mahatma Gandhi
"Preach the Gospel always, and if necessary, use words." --Francis of Assisi.
"Family farms work when the whole family works the farm." -- Adam Klaus
Location: Lower Mainland British Columbia Canada Zone 8a/ Manchester Jamaica
posted 7 years ago
My rocket stove is setup to burn pellets, as chunk firewood is what is a pain to get, and to keep lit. I wanted my stove to run for at least 4 hours with no crackling and no failures that cause flames to run up the wood. Mind you I can't prove it runs totaly fan free has I have broken a rocket stove rule of minimal elbows as I run it back and forth across the dehydrating room 6 times. But I do via the outlet fan's sucktion have the options of running it at a steady 350f or I can shut the main air inlet and draw air through the pellets for a 500-600f gasification fire the design isn't terribly far off from the one in the video but I'm using larger tubes and can convert back to wood even though it drives me crazy. Around here fire wood is a novelty and not a source of fuel so unless you travel far out or can buy it in serious wood shed bulk I can't store more than 2 days continuous burns worth. A bag of pellets will last me 8 to 16 hours depending on how much pull I allow and how much i reduce the burn area.
If you can build a proper rocket stove and have the space I say go for it, mines made strickly out of high tempurature flue pipe and a barrel suspended off the ground and the heat tubes run under a deck filled with gravel. In the summer I run it without a fire into my greenhouse for cooling as the ground keeps the air cold.