Best Rocket Mass Heater.........I've built yet.
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- Опубликовано: 12 фев 2016
- Sorry for video quality, I am an amateur. This is a rocket mass heater experiment, still in experimental stage, I can run this anywhere from 400f top of barrel, to melt down 1200f or higher. Will upload another video of near melt down temps. Please ask any questions, or make suggestions. Thank you for viewing.
Wow. That looks like a really nice one you have there. Any way of you sharing your design. Im really impressed. Nice work.
Very clean job. It looks great
Nice design. I too would like to know more about how your pellet feeder system functions. Thanks for posting.
Very hard to describe, and i'm still making improvements. It is gravity feed, and the distance of the feeder to the barrel pre warms the pellets
Sounds Perfect! Nice Job!!!
Thanks!!
Yeah it really does have that same continuous droning roar and sound exactly as the space shuttle I watched take off from cape Canaveral...🚀.
And as good as the video is the thoughtful questions and feedback from the community at large have been equal.
Please continue to share the wealth of info friends...
That is cool! Would love to have the plans for that!
I like the gravel thermal mass and the realistic building methods. This is doable and easy to remove if remodeling a house. Looks like you nailed this one and I like the pellet feed. I'd love to build one of these but it would probably just be supplemental heat for my wood stove because of burn time and not being home to tend it.
Awesomesauce!!! Gitr done!
I like the way you situated the mass portion of the system. It seems to have a semi-modular vibe seeing as how you could create more mass as you extend the second half of the exhaust piping potentially anywhere in the space. At least it appears to have that capability.
Aaaaaesome! Well done ✔
That's a really nice one
Please tell me how you build the pellet feed system? Thanks
Very nice. Amzingly, mine is very similar to yours. I made a larger version of RUclipsr "zerofossilfuel." I also made a pellet basket similar to his too.
Like you, I also used block and crushed stone as mass, and am planning adding more flue to it since it still draws like crazy with 35 feet of flue.
Just yesterday I got my hottest burn using 3 inch long chunks of 1.5 to 2 inch diameter branches. They burned hotter than pellets.
Using a stack thermometer like you, on the side of the barrel, near the top, I buried the needle, it was about at 5 o'clock. The mass is heating the house 24 hours later.
I draw intake air from my small metal shop on the other side of the wall from the stove. When I want to heat the shop, I just open the door. This intake also draws fumes from the shop too, an added bonus.
Now, I've new ideas and a stack of 1/4 inch steel... Aren't rockets fun?
Rockets are a ton of fun. Looking forward to using water as mass soon myself. Longer exhaust will not likely slow down your draw
All or nothing..... I am going to find out soon about additional length. Presently building a batch box out of 1/4 inch plate to burn cord wood, drawing combustion air through the grate tubes. Need to mess with secondary air more too. Presently have a 3/4 inlet. I think it could handle a much larger one.
I've got that same thermometer and had the needle pointing around 5 o'clock, off the scale, burning sticks. This makes me wonder how long the barrel will last.
All or nothing.... Oops... told you already about the 5 o'clock thing... sorry for the redundant reply.
Yes... big adventure. All this fun... and heat too.
I watched zeros video. I like his heater. I might build my version of his. Do you have any videos?
Lovely dogs, God certainly knew what he was doing creating canines.
Poor dogs are really wanting to get up on the mass and enjoy the heat, but hate how uncomfortable the gravel is.
The beloved barrel....
Very slick and nice build. I have a basement that floods 6 inches every spring so this is not a option. I insulated my floor joists with R35 insulation. In your case you want the heat to migrate into your upstairs living space. In your case with your beautiful rocket stove thermal bench I would insulate the floor and the concrete walls. I want to build this up the mountain.
Great build! I'm curious what is your technique to control temperature of the burning surface. The rock bed is a nice touch as well.
Great design...whats the feed system for the pellets, a 40lb bag lasts how long; i might think of pea gravel over the rock...tell us dimensions you used...once again, awesome job
Красота!
how long do you let it burn like this in order to charge the thermal mass for the day? how is the pellet feed controlled? great setup.
A most impressive setup. I assume you can block the pellet feed when you've charged the mass.
Thanks very much. Very fine masonry job. Any more details?
Will build another soon with an in depth step by step. Thanks!
Very nice! Like the pellet option. Hope you'll share the specs.
Thank you, working on it
Very nice looking RMH. Please upload another video about the pellet feeder and your construction materials and dimensions. Also, what are your exhaust temps with the barrel at 800F?
There's a double back in my exhaust bench, exhaust temps are around 140F with the barrel at 800F, you can hold your hand on the exhaust
Nice ...is that your final seat?
do you show your deaign on how to? I would like to make one for to heat my pool.
I noticed the chimney is further away from regular rocket mass stoves. Are they not supposed to be near the main combustion chamber to induce good convection currents?
seems very interesting as a system and I always thought that the call for fresh air for the fireplace should come from the outside .. but how is it that the fire does not go up in the pellet tank ??
Because te chimney system of a rocket stove/heater creates a strong draw. Once fired the flame is literally burning sideways in the burn chamber. It's being sucked away from the pellet hopper, not towards it.
Nice and neat, I'm looking forward to building mine similar to yours. How much vertical rise before the exhaust exits the house? Could you terminate it out the basement wall? Is it 6 or 8 inch? Thanks
You really need to run it up above the house roof...because, if the wind changes direction, and blows against the side of the house with the exhaust pipe sticking out, the wind pressure created as the air tries to flow around the house can create backflow in the stove, choking it. It's inconvienent to run the pipe up that far, but it is what it is.
Nice clean build, do those rocks radiate the heat well? I'm currently working on a similar RMH as well but in my research I found out that pea gravel works better. Apparently larger rocks acts like an insulator due to a lack of heat transfer. What have you found?
I use large rocks, broken bits of concrete, gravel, and a must-have...Dirt. To properly connect all the bits of heat-retaining rock in the mass. Big rocks take longer to heat up but they take forever to cool off. If you just fill the bench with rocks, no dirt, there will be an awful lot of little air pockets in between the rocks, and you'll have poor thermal transfer between the pipe and the rocks. You want to fill in all that dead air space.
Seeing this pellet-feed system is neat, but i personally prefer using sticks and waste wood. But i'm poor, and don't want to BUY pellets.
Good observation. Could you use dirt only as your as your mass ? Thanks
Or even sand ?
I've noticed, is your heater built in a basement? If so, what affect is it having on the upstairs?
It looks like it is in your basement how well does the heat radiate to the rest of the house?
BAD ASS!!!! WHAT MAKES THE PELETS DROP???? IS IT JUST THE HEAT??
Gravity.
Thank you :)
Looks great! Bet it cuts the heating bill.
does the barrel top ever burn thru
Most mass heaters look like crap to me. This one actually looks great with the right angle brick mass. I like it a lot.
I am going to build one but I just dont trust a thin 55 gallon drum. The top (bottom of the drum) is deflecting that 800 degree flame. I know that the thinner drum will release heat quicker but if that thin sheet metal drum burns out it could be a disaster. I am going to use a 60 or 80 gallon air compressor tank that is easily 3 to 4 times thicker than a 55 gallon drum.
Can you please do a more in depth video explains how the pellet system works how does it drop, how much bags do you go through, ect..?
I'm working on it, thank you :)
All or nothing it's been a year without a reply.... Go figure... lol
Douglas Pohl ...but he replied 2 years ago and said “I’m working on it”...REALLY.. I loved the short video anyway, but it would be great if there’s was an updated video to follow. The channel will blowup with views. Well, I guess they don’t care about that... Views can equate to $$$ if they know how to setup their RUclips Cashflow... 🤭🧐😎🤪
@@douglaspohl1827 3 now ;)
@@gg-gn3re There are hundreds of Pellet Rocket Stoves and pellet grates on RUclips. Take a look... It's all there... But why would you even consider the investment of your time and materials... the engineering does not pencil... it's ridiculous because storing of heat in 'stone' like materials only holds 0.2 btu per pound. Said another way is you would need to burn 5 pounds of wood (5 lbs x 6,000 btu/lb) for every 6000 btu stored... You would need tons of stone mass to hold enough heat to be usefully between fires and would require a forest of firewood to burn. The pollution into our atmosphere begs you to stop. If you really want low cost consider a split heat pump. For every KWh of electricity you buy the heat PUMPS 2.5+ kWh of heat (1kWh = 3,412 btu) into your living space home. How many btu your room requires is a simple matter of how well insulated it is. Example: a room 10' x 10' x 6 walls = 1000 cu ft. or 600 sq ft. of surface area. Assume all walls have 4" of fiberglass insulation. (more is highly recommended) this space requires with outside temperature at 32F 3,200 btu/hour to maintain 72F inside. Google Home heat calculator based on location zone. Good luck.
A pellet stove?
What is the function of the black pipe poking out of the cob? How do you regulate the pellets? Nice looking RMH.
The black pipe is an exhaust inspection point. Can't call it a clean out, because there's never been any soot or ash in there, perfectly clean burn
Thanks.
It cannot be a 100% clean burn since wood products contain carbon which will deposit at the bottom of the burn chamber. I suspect the leftover deposits were moved into the dissipater as a fly ash, and perhaps some of it exited the chimney.
The carbon combines with oxygen and becomes CO2. That's the entire point of a Rocket Mass Heater......
How fast does it burn through a full hopper of pellets?
A hopper full of pellets? Are you burning constipated rabbits? Uncool, dude.
THAT is a REAL ROCKET sound . Perfect just needs a nice stainless steel barrel to accept the temperatures .
It's been two years since build, how many cords of wood under what outside conditions? Do you know your living space R-values? What has been rebuilt or revised etc? Where is heat being used in living space - above or next to this space? Thanks! WHY IS IT EVERYONE SHOWS A BUILD BUT DOES NOT REPORT AFTER USING WITH ANY DATA? DISAPPOINTED? A ROCKET STOVE DOES NOT GET MORE HEAT FROM WOOD THAN A REGULAR COMMERCIAL WOOD STOVE... ITS WHAT "YOU" DO WITH THE HEAT THAT COUNTS... UP THE EXHAUST PIPE OR RUN THE EXHAUST THROUGH A MASONRY MASS ONLY CAPTURES 0.2 BTU/LB IN MASONRY. ONLY 400 BTUs PER TON FOR MASONRY MEANS YOU NEED LOTS OF MASONRY AND SPACE... and don't forget you have to keep the masonry charged with heat else you have to start over burning hundreds of pounds of wood for several days to charge you mass back up with heat. iTS NOT WHAT ITS CRACKED UP TO BE... FUN DIY PROJECT BUT REMEMBER YOU ARE PLAYING WITH FIRE. LOG SOME REAL WORLD USE DATA AND SHARE IT PLEASE. Second video same day is here: ruclips.net/video/FczF74qDvUE/видео.html
Didn't hear anything. Was that on purpose?
Very nice, but I urge you to replace the galvanized pipe. It's toxic when heated, and you're certainly heating it!
with the temoerature RMH:s works around the toxicity of galvanized material is none. As they explain you can hold your hand on the exhaust, there's no way toxic material should be released from the pipes.
With RMH's, the firebrick-lined burn tunnel and heat riser (inside the drum) run between 1500-2000*F, burning ALL the smoke. As the flame leaves the top of the heat riser, into the drum, the expanding gasses cool down quite a bit. Bottom of drum/ ash plenum temps run around 400-500*F. As the clean exhaust gasses flow through the pipe inside the mass, the mass leaches out most of that heat. Exhaust stack temperatures usually are only 90-140*F, usually requiring that you insulate the pipe outside the building, just to keep the exhaust warm enough that it will continue to rise up and out.
You can put your hand on the exhaust stack without burning yourself. I can usually put my face on the chimney outside, and sniffing the exhaust gasses coming out of the 'chimney' i can smell ZERO woodsmoke, just warm air. With a normal heat-wasting wood stove you would be right, using single-wall galvanized duct for the chimney would be suicide. But with these RMH's, it is perfectly safe. The metal would have to be glowing hot to outgass zinc fumes.
www.permsteading.com/viewtopic.php?f=6&t=632
If the galvanization comes off (which it does; you can see it after awhile), the toxic elements have come off. By definition, that is what happened. If it came off, it came off. Into the air that people breathe. What's the big deal, assholes? Just use the proper stovepipe.
Kube Dog once the heat leaves the barrel it is not hot enough to burn the galvanized pipe. The exhaust after the barrel is only about the same heat as the exhaust of a forced hot air gas furnace and those are galvanized. The heat or the air passing through is mostly vapor. The regular steal stove pipe is then subject to rust and rot.
Kube Dog also the real people that have to be concerned about galvanized poisoning is welders. Welders ( I was a cert welder for 25 + years). Generally welders who when welding galvanized metal are subject to large amounts of these poisonous fumes. The affects of poisoning are flu like symptoms and you will feel like you have a very bad flu. However after a few days you do get better. Welders will drink milk to combat this sickness. There also are no long term complications form such poisoning. The whitish powder is the contaminant. It is the same substance lifeguards put on their noses. The minuscule amount of dust or fumes if any from where this guy uses galvanized pipe will hardly make anyone sick. So, please stop with the fear tactic and the name calling. This guy built a very nice heater.
Speak. Tell us more about it
Nice job, but consider (if possible) taking in air from outside.
You're essentially taking hot interior air, and shooting it out the exhaust.
Not if it gets captured in the mass.
ChasingTruth TakingFlak Consider perhaps, but Paul Wheaton on www.permies.com the frontier in rocket mass technology, is cool to the use of exterior air intake. He suggests that the quality of the air in the room takes precedent over the air in the firebox. So what you're giving up in efficiency (not much per his testing) you're making up in more important indoor air quality...I'm with Paul on this one
I thought that also. RMH works better with inside make up air.
lets say outside air temp is 0, inside air is 100, and exhaust is also 100. For every cubic foot of 100 degree air that exhausts, 1 cubic foot of 0 degree air must leak into the building. This makes using outside air a better choice. What are the downfalls to using outside air other than complexity in design?
I completely agree, if for no other reason that I like to leave oxygen in the room, lol
Can any
One make a mass rocket stove with anything other then a barrel ... Lol
Do you know why they have a "color commentator" for football games on TV? That's why you need a voice dialog to help clarify "how to" in your clips, which now rate a 3 out of 10.
Man what a draw....!
love it except that UGLY ASS barrel
Didn't show step by step. This is just bragging.