sorry for 2 parts..but wanted to say..we may be able to cut down on copper, make a smaller portable unit , i have made some with coils..coils high,coils low etc..but unlike conventional low efficiency stoves/fires etc..a rocket stove has killer Temps F right at the fuel air margin..like a forge...need a compact water jacket or coil at that point 1200f plus..would prob be on demand boil or near.peace.
@CheapEnergyIdeas Coil placement is very important. I chose the position right below the tip of the cone of the reburn flame on mine. To keep the exhaust as clean as possible, I wanted to be sure I wasnt taking heat from the riser tube. Within a minute of starting, there is no smoke coming out of the furnace, and the water is already hot enough to kick the blower in the house on. It would be a killer boiler if I put the coils in the riser tube.
@theairgunman ..nice ..yeah..i'm building a mini tester..trying to place the coil @ coals..just like a forge..white hot coals at the fuel /air burn point in a more true pipe rocket where u get a higher velocity jet burn/forge effect...seeing how i've been melting pipes i figured i wouldnt need a coil anywhere else if i could get my high heat from there... i'll make a vid if i find a way..but i really like your setup man..peace.
nice!..workin on mine , before i build the full blown ver..i like your "dual plane" something i wanted to pass on to u..in my tinkering with designs i noticed reg wood stoves run around 300-500F inside , rocket stoves tend to run around the same to a tad higher in the reburn of the pipe..but in a RS at the point where the air meets the fuel a blow furnace effect creates temps in excess of 1200F.i melted an aluminum pipe..we need to firgure best layout of water coils there! peace.
that sounds awesome you rock....just wondering where is all that copper tubing...is wrapped around the exhaust flue? Is it wrapped inside the insulated riser?
@boricuamoreno61378 The insulated heat riser forms a L shape, making a total length of 4 feet. The copper coils are placed above the insulated portion and in effect form the exhaust flue within the concrete blocks. The reasoning behind this configuration is to allow complete combustion before the exhaust is cooled by the coils, thus preventing creosote and promoting clean exhaust.
@boricuamoreno61378 For better efficiency, I could probably use another 60 foot of the 3/8". I was going to video the build step by step, but I dont have much spare time, so I couldnt do both. I do have some pics somewhere, I'll try to get some more info on this up here some time.
@highwaylizard I think I do, on a SD card from my old cell phone. I'll see about uploading it to my website and send you a PM with the link to it in a couple days.
@boricuamoreno61378 I actually used both. The cool water return feeds at the top into the 3/8" 60 foot long coil to preheat. That then goes to a 1/2" 55 foot long coil to finish heating to be piped to the heat exchanger.
Great set up. Wish I had that going at my place right now. Will check our your other vids and subscribe. I was told romans even had these horizontal chambers that carried heat under the house to chimney on other side. I really like these ideas. I am getting ready before long to build an emergency use rocket stove. I have materials collected. Glad I ran across you vid. Thanks for sharing it with us.
@19stoney64 Thanks, it is nice to burn small amounts of wood and stay warm instead of using a lot of electricity. Good luck with your build, these things are a lot of fun to play around with.
@Boyntonstu Thanks. It doesnt get very hot, just enough to take a lot of the water out of the wood. Most of what appears to be smoke is actually steam. The nice thing is that it uses heat that would be normally wasted to pre season the wood. This allows me to stretch my seasoned wood by adding one green stick to two seasoned ones. Theoretically, any water that makes it into the burn chamber will react with the coals to produce hydrogen and carbon mono/dioxide :)
sorry for 2 parts..but wanted to say..we may be able to cut down on copper, make a smaller portable unit , i have made some with coils..coils high,coils low etc..but unlike conventional low efficiency stoves/fires etc..a rocket stove has killer Temps F right at the fuel air margin..like a forge...need a compact water jacket or coil at that point 1200f plus..would prob be on demand boil or near.peace.
CheapEnergyIdeas 1 month ago
@CheapEnergyIdeas Coil placement is very important. I chose the position right below the tip of the cone of the reburn flame on mine. To keep the exhaust as clean as possible, I wanted to be sure I wasnt taking heat from the riser tube. Within a minute of starting, there is no smoke coming out of the furnace, and the water is already hot enough to kick the blower in the house on. It would be a killer boiler if I put the coils in the riser tube.
theairgunman 1 month ago
@theairgunman ..nice ..yeah..i'm building a mini tester..trying to place the coil @ coals..just like a forge..white hot coals at the fuel /air burn point in a more true pipe rocket where u get a higher velocity jet burn/forge effect...seeing how i've been melting pipes i figured i wouldnt need a coil anywhere else if i could get my high heat from there... i'll make a vid if i find a way..but i really like your setup man..peace.
CheapEnergyIdeas 1 month ago
nice!..workin on mine , before i build the full blown ver..i like your "dual plane" something i wanted to pass on to u..in my tinkering with designs i noticed reg wood stoves run around 300-500F inside , rocket stoves tend to run around the same to a tad higher in the reburn of the pipe..but in a RS at the point where the air meets the fuel a blow furnace effect creates temps in excess of 1200F.i melted an aluminum pipe..we need to firgure best layout of water coils there! peace.
CheapEnergyIdeas 1 month ago
that sounds awesome you rock....just wondering where is all that copper tubing...is wrapped around the exhaust flue? Is it wrapped inside the insulated riser?
boricuamoreno61378 1 month ago
@boricuamoreno61378 The insulated heat riser forms a L shape, making a total length of 4 feet. The copper coils are placed above the insulated portion and in effect form the exhaust flue within the concrete blocks. The reasoning behind this configuration is to allow complete combustion before the exhaust is cooled by the coils, thus preventing creosote and promoting clean exhaust.
theairgunman 1 month ago
wow that is way more than I thought.....I wish you had some type of plans or layout of your step by step build....
boricuamoreno61378 1 month ago
@boricuamoreno61378 For better efficiency, I could probably use another 60 foot of the 3/8". I was going to video the build step by step, but I dont have much spare time, so I couldnt do both. I do have some pics somewhere, I'll try to get some more info on this up here some time.
theairgunman 1 month ago
Do you have any pictures of the copper tubing that you installed in the flue?
highwaylizard 1 month ago
@highwaylizard I think I do, on a SD card from my old cell phone. I'll see about uploading it to my website and send you a PM with the link to it in a couple days.
theairgunman 1 month ago
How large is your copper tubing 3/8 in, 1/2 in? Trying a similar setup. will post when started
boricuamoreno61378 1 month ago
@boricuamoreno61378 I actually used both. The cool water return feeds at the top into the 3/8" 60 foot long coil to preheat. That then goes to a 1/2" 55 foot long coil to finish heating to be piped to the heat exchanger.
theairgunman 1 month ago
great stove
crsbt 2 months ago
Great set up. Wish I had that going at my place right now. Will check our your other vids and subscribe. I was told romans even had these horizontal chambers that carried heat under the house to chimney on other side. I really like these ideas. I am getting ready before long to build an emergency use rocket stove. I have materials collected. Glad I ran across you vid. Thanks for sharing it with us.
19stoney64 2 months ago
@19stoney64 Thanks, it is nice to burn small amounts of wood and stay warm instead of using a lot of electricity. Good luck with your build, these things are a lot of fun to play around with.
theairgunman 2 months ago
That's a great idea, a ready made damper would do the trick!
theairgunman 2 months ago
I am impressed that the white paper label has not darkened by heat.
Cool system!
I can visualize a rotating slide valve feed mechanism similar to a cd/dvd turntable in 3D.
It would act like the cylinder on a revolver. Cover-drop feed: cover-drop feed, etc
Four 'cartridges' should be adequate for 8 hours of burn.
Boyntonstu 2 months ago
@Boyntonstu Thanks. It doesnt get very hot, just enough to take a lot of the water out of the wood. Most of what appears to be smoke is actually steam. The nice thing is that it uses heat that would be normally wasted to pre season the wood. This allows me to stretch my seasoned wood by adding one green stick to two seasoned ones. Theoretically, any water that makes it into the burn chamber will react with the coals to produce hydrogen and carbon mono/dioxide :)
theairgunman 2 months ago
@theairgunman Thinking about auto feed:
Install a butterfly choke instead of a cap.
Open the flap and feed wood is a manner similar to a vending machine.
Each 'candy' is a bundle of 24" firewood.
Boyntonstu 2 months ago