I made one like that using 4" square tubing and I use it to heat my three stall garage now. Mine is 32" long (bottom tube) with a 12" rise in the vertical tube and 20" in the horizontal top tube. I get over 10 hours with a 40 lb. bag of pellets running it wide open all day (or night) long.
Thanks, rronmar. I've actually moved on to a large mass heater you can see in another video. It could probably me made more efficiently, but the large one already heats my shop up to the 70's on a 25 degree day, so I don't really want it to be more efficient! : ) I'm currently working on a smaller one and am experimenting with it. Fun stuff to mess with and I've got lots of metal laying around.
I moved on to a different design many years ago and about three years ago I finally got to build a new shop with good insulation and don't use a pellet heater anymore. Sorry I'm not more help.
That's great Bob! I don't think you need more mass, what you need to heat air more efficiently is more surface area and more internal volume. Heat transfer is mainly about surface area and time(and turbulence). IF you have another propane tank, you could drill 1"-1 1/2" holes around the top and bottom and run pipes between the holes and weld the ends into the tank. Cut that upper horizontal back a few inches and Stand this tank upright on top of the lower horizontal tube and have the upper horizontal feed into the side of the tank. Put a exhaust pipe port on the top end of the tank to connect to your existing chimney pipe. You could also weld fins to the outside of the tank for even more surface area. The rapid flow from the 2 1/2" tube would hit that tank and slow way down to allow more time to transfer heat to the vertical pipes inside and the tank walls. The vertical pipes would act as individual chimneys pumping hot air into the room... A few twisted strips in the vertical tubes would help the room air remain turbulent in the pipes for better transfer to the room. I am working on a vertical burner that will feed a tripple pass stainles tube water coil to heat water. I have the burner working well, about to start building the water coils. No moving parts except the water pump to circulate the water. Building a new house with hydronic radiant floor heat so will need additional sources of hot water... Thanks for showing us your work...
Looks great, trying to build one similar to yours but having issues with the feed. Was wondering if you had a better view of your feed basket (where the pellets sit). Having problems with the flame coming up the hopper tube. Any help would be great, thanks.
my similar but much larger "pella-rocket" does not burn well on straight corn. but I got a 50/50 mix of corn an pellets burning nicely. again I made mine from 6" square tubing left over from the silo house build.
Hi, I wonder if you could provide some more information about this. a) what the dimensions of the tube are b)how much pellet this thing burns per hour (in pounds or kg), c) how did you fit that screen (that shows in 1:52) in the tube and what kind of material is it from? d) are you using some kind of fan to provide air in order to get such an intense flame? I am trying to make something similar, please answer asap if you can.
Do you have a sketch/blue print for it? I have a small greenhouse that I want to keep warm next winter. Using electric this year... but it is costing a lot of money. Thanks for the video.
Hey Bob that's an awesome stove design looks small enough and light enough for great portability. Just wondering how long does the pellets last, couple hours? just curious but great job! well done!
@@bobjosjor8307 Even though the camper would be insulated? In the video you mentioned that garage was not insulated. I would bet that insulation (even camper insulation) would make quite a difference in the area it can effectively heat.
phide01 No. I've since moved on for heating my shop. This type of design in this size would work well for something like a small goose blind or something. If I were you, I'd look at the Wiseway stove.
hastyheat.com has one but price jumped this year 200$...cylinderstoves.com sell a burner for 4400....hasty will sell just burner also $600...haven't compared them. Silverfire.us has a nice cabin oven with cascade pellet feeder.
For better heat transfer, surround the pipes and flue with aluminum snaplock duct pipe, and pack the space between with recycled aluminum foil, foil containers and plates, or crushed aluminum cans.
That's part of the magic of a these kinds of designs. The air intake is strong enough that the flame is drawn into the long tube and doesn't go up the feed chute.
But if and when there is burnback to the fuel hopper how do you recommend mitigation? Does it happen often from what condition? Not cleaning the grate enough? Details please.
Good work Bob, I have been checking these out on RUclips and am amazed at the efficiency. Great video. L
I made one like that using 4" square tubing and I use it to heat my three stall garage now. Mine is 32" long (bottom tube) with a 12" rise in the vertical tube and 20" in the horizontal top tube. I get over 10 hours with a 40 lb. bag of pellets running it wide open all day (or night) long.
Nice! I'm thinking of revisiting this design, if I can lay my hands on some 4" square tubing sometime.
Thanks, rronmar. I've actually moved on to a large mass heater you can see in another video. It could probably me made more efficiently, but the large one already heats my shop up to the 70's on a 25 degree day, so I don't really want it to be more efficient! : ) I'm currently working on a smaller one and am experimenting with it. Fun stuff to mess with and I've got lots of metal laying around.
I fiddled a little bit this morning with the draw and really have it cooking now. Boiling water on the top riser.
I made one to but whit 6 inchs tubing, the trouble a have is the fire get up in the upper pellets basket
I moved on to a different design many years ago and about three years ago I finally got to build a new shop with good insulation and don't use a pellet heater anymore. Sorry I'm not more help.
I want to to use your idea. But hook it to a grill for a smoker. Wish I could see how u built the inside of tube
That's great Bob! I don't think you need more mass, what you need to heat air more efficiently is more surface area and more internal volume. Heat transfer is mainly about surface area and time(and turbulence). IF you have another propane tank, you could drill 1"-1 1/2" holes around the top and bottom and run pipes between the holes and weld the ends into the tank. Cut that upper horizontal back a few inches and Stand this tank upright on top of the lower horizontal tube and have the upper horizontal feed into the side of the tank. Put a exhaust pipe port on the top end of the tank to connect to your existing chimney pipe. You could also weld fins to the outside of the tank for even more surface area. The rapid flow from the 2 1/2" tube would hit that tank and slow way down to allow more time to transfer heat to the vertical pipes inside and the tank walls. The vertical pipes would act as individual chimneys pumping hot air into the room... A few twisted strips in the vertical tubes would help the room air remain turbulent in the pipes for better transfer to the room. I am working on a vertical burner that will feed a tripple pass stainles tube water coil to heat water. I have the burner working well, about to start building the water coils. No moving parts except the water pump to circulate the water. Building a new house with hydronic radiant floor heat so will need additional sources of hot water... Thanks for showing us your work...
I didn't catch it in the videos, have you measured how many pounds of pellets it burns for a given time period? Thanks.
Looks great, trying to build one similar to yours but having issues with the feed. Was wondering if you had a better view of your feed basket (where the pellets sit). Having problems with the flame coming up the hopper tube. Any help would be great, thanks.
I was wondering how well corn kernels work in this type of heater.
my similar but much larger "pella-rocket" does not burn well on straight corn. but I got a 50/50 mix of corn an pellets burning nicely. again I made mine from 6" square tubing left over from the silo house build.
How much in material .
Nice job. Can you show how you made the net inside the burner?
Thanks
Hi, I wonder if you could provide some more information about this.
a) what the dimensions of the tube are
b)how much pellet this thing burns per hour (in pounds or kg),
c) how did you fit that screen (that shows in 1:52) in the tube and what kind of material is it from?
d) are you using some kind of fan to provide air in order to get such an intense flame?
I am trying to make something similar, please answer asap if you can.
That is a nice big hopper. Does it ever clog up? I want to use my everlast welder to make a pellet stove to heat my workshop.
Do you have a sketch/blue print for it? I have a small greenhouse that I want to keep warm next winter. Using electric this year... but it is costing a lot of money. Thanks for the video.
Great job !
Hi Bob, looking for your larger stove you mentioned in the comments below. I too live in Neb and would like to come and look at it if possible.
Does it produce carbonmonoxide plan to build for my shed but afraid of the toxic gas or do i need it vent
Awesome idea sir,
Do you have a diagram available so I can build one similar to yours?
Need a diagram of the burn chamber if you have one.
Thank you.
what effect do you think that fan blowing on stove had to do with heating the water?
Could you forward plans for this stove? Looking for something this small. Thanks
any chance you could post plans for this? Very interesting design that I want to adapt into something else.
What kinds of temperatures do you get off it? & Would this be considered a rocket stove?
Hey Bob that's an awesome stove design looks small enough and light enough for great portability. Just wondering how long does the pellets last, couple hours? just curious but great job! well done!
Will you help me build one! Please!
Sorry about the audio level. I filmed it and stitched it together with my iPad and couldn't find any way to amplify or normalize the audio.
Do you think this would heat a 40' 3 slide camper?
No. Maybe a 10'10' goose blind or something like that, but no way it puts out enough for a 40' camper.
Bob Josjor ok thanks
@@bobjosjor8307 Even though the camper would be insulated? In the video you mentioned that garage was not insulated. I would bet that insulation (even camper insulation) would make quite a difference in the area it can effectively heat.
I think you need to answer people's questions😉
Would you start selling these? I'm looking for something like the for a small mountain cabin
phide01 No. I've since moved on for heating my shop. This type of design in this size would work well for something like a small goose blind or something. If I were you, I'd look at the Wiseway stove.
hastyheat.com has one but price jumped this year 200$...cylinderstoves.com sell a burner for 4400....hasty will sell just burner also $600...haven't compared them. Silverfire.us has a nice cabin oven with cascade pellet feeder.
For better heat transfer, surround the pipes and flue with aluminum snaplock duct pipe, and pack the space between with recycled aluminum foil, foil containers and plates, or crushed aluminum cans.
You got to be kidding... increase the heat? Melting alumimum happens at 1221F... this stove is very likely to exceed that on many occasions.
How do the pellets in the feed not catch on fire bob
That's part of the magic of a these kinds of designs. The air intake is strong enough that the flame is drawn into the long tube and doesn't go up the feed chute.
But if and when there is burnback to the fuel hopper how do you recommend mitigation? Does it happen often from what condition? Not cleaning the grate enough? Details please.
Imagine dripping just a small amount of waste oil into the pellets at the bottom of the hopper :)