first build rocket burner

  1. gaz1

    gaz1 Forum Supporter

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    ive chosen the design i want to use and also the heat output of the system

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    a simple build which will also be dual fuel logs and also sawdust combining 2 different builds with output of 800 degrees F

    im using stainless steel 120x120mm 3mm 304 box and 100mm 2mm 304 round pipe for the internal burn sections ive looked at the wire needed for the mig 308Lsi is easy enough to get but 309 is proving to be much harder to aquire rods i can aquire for arc welder

    im wanting to change from stainless steel to mild steel for the door seal and also to fasten the door onto the frame as the frame will be welded to the gas bottle
     
  2. gaz1

    gaz1 Forum Supporter

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    its time i updated this to what it is now

    materials used 4" stainless steel tube and 120mm x 120mm stainless steel square tube

    ive tested 2 types of ways of burning
    ive used only stainless steel 304 for all internals as they get alot of heat inside of them

    https://www.dropbox.com/s/akusdzsbe36h5s1/VIDEO0015.3gp 7th test gained the clean burn inside of the vortex tube

    my way

    https://www.dropbox.com/s/k0m7b1i6kpmv59x/VIDEO0010.3gp 4th test to gain clean burn

    ive then retested this once welded up

    without secondary air
    https://www.dropbox.com/s/fgo6suymzjzxoaz/VID 00014-20140316-1404.3GP

    adjusting the secondary air pipe to find the sweet spot

    https://www.dropbox.com/s/66et2kaw2wbzm9r/VIDEO0019.3gp

    im further on now as ive added a burn box to the front of the tube also in stainless steel

    with the burn box i choose 9" x 9" stainless steel as im wantin gto load it and walk away while it burns away estimated time to burn down to coals is 3-4 hrs
     
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    smoggyrich likes this.
  3. gaz1

    gaz1 Forum Supporter

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    run out of gas had to wait for a new bottle

    airwash system for glass top or just steel blank being made up

    2nd pick is unwelded setup 3rd pic welded on top too 5mm steel scrap bars

    nearly complete just need door and air spinners for sides considering and ash box underneath and the chimney exhaust pipe
     
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  4. Shox Dr

    Shox Dr Chief Engineer to Carlos Fandango

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    Looks to be an interesting build, any reason why the pipe is not central?
     
  5. gaz1

    gaz1 Forum Supporter

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    the pipe should have been central but when i first welded it for testing it ended up offside which was a shame didnt look offside while testing it but when leveled inside the bottle it was offside from centre

    however dosnt make a difference to the heat output of between 700f too 900f+
     
  6. gaz1

    gaz1 Forum Supporter

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    the reason why its off centre is to create a vortex inside the 4" pipe the vortex also mixes secondary air which inturn burns the gasses given off from the slow burning wood conserving wood usage best way to explain it is it burns a 1/4 of a cord of wood per cord usage

    the pipe is leaning to the right though when i was welding it up it was slightly off the other pipe i have welded is straight though
     
  7. gaz1

    gaz1 Forum Supporter

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    had to change this the size of the bottle vs the air inside to move was too much and the system stalled out and put fire out every time however it would be fine if used with a smaller outside diameter bottle

    new size is 30"/34" high

    i understand alot dont like outside links but these are to a secure drop box account so you can view on video on there

    sorry it goes upside down
    https://www.dropbox.com/s/av6jpjqew3wacfz/20140607_212922.mp4

    https://www.dropbox.com/s/gwoem3ajmpd3nhe/20140607_213902.mp4

    https://www.dropbox.com/s/8hkduthyuy5ryhp/20140607_214350.mp4

    decided to fill it up even thoe using normal safety glass

    https://www.dropbox.com/s/gh3ad52ic58gckk/20140607_215100.mp4

    ive had it that hot the top was melting the paint off and back of it was going black with heat the exhaust pipe was red hot to the touch
     
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  8. gaz1

    gaz1 Forum Supporter

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  9. gaz1

    gaz1 Forum Supporter

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    update to the above built system i also have to redo some of the links above as i moved the links

    this is a side ways test of the dyno v last night wind speed at 00.20 i reckon 10/15 mph

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    this is last nights test 40 mins total time
    https://www.dropbox.com/s/hpcf68nc2rnha8q/20140820_003906.mp4

    12 mins to get it going to temp then noticed the unit was glowing red underneath had no door on for quick loading put door on then inserted door seal on door as still not glued yet total time for this roughly 18 mins before video started

    video shows unit was glowing red hot

    these are the numbers of temps between flat and horizontal of the dyno v system

    places ,flat , side ,underneath side
    sa ,350c , 350c ,361c
    front ,280c , 300c ,140c
    3/4 ,149c , 167c ,141c
    chimney ,114c , 276c ,286c
    center ,207c , 268c ,265c
    join sa front ,290c , 349c

    from my readings there is a temp difference between how the model is situated
     
  10. gaz1

    gaz1 Forum Supporter

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    ive updated on some of the links as some of the links no longer work on site

    post 2

    https://www.dropbox.com/s/nlcj5e4b7vuce09/VIDEO0015.3gp?dl=0 7th test gained the clean burn inside of the vortex tube

    my way

    https://www.dropbox.com/s/mkvq8yq8pn41xnt/VIDEO0010.3gp?dl=0 4th test to gain clean burn

    ive then retested this once welded up

    without secondary air
    https://www.dropbox.com/s/pyasiztu7bg3i5k/VID 00014-20140316-1404.3GP?dl=0

    adjusting the secondary air pipe to find the sweet spot

    https://www.dropbox.com/s/n0ux2080zm2175n/VIDEO0019.3gp?dl=0
     
  11. gaz1

    gaz1 Forum Supporter

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    Location:
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    this is a multi way version of a firebox this is an updraft and downdraft wood stove

    i have learnt a few things with building this version of heater

    how to light it
    where best to place the secondary air
    the heat output from the system
    and its length has a good deal with its output

    if i was going to build a 3 way version i would consider a good few changes to its design but the design is simple and simple to use
    however it is possible to make a fire burner stove into a 3 way system and extremely viable for usages
    ive had this version at 1000f and its hot even with welding gloves on ive had a few burnt fingers with the heat from it

    downdraft position




    updraft position



     
  12. gaz1

    gaz1 Forum Supporter

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  13. gaz1

    gaz1 Forum Supporter

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    as im on a new build of the rocket stove by using perlight and refractory cement heres the pics of the new forms that ive just cemented up tonight

    used material
    25 kg of perlite then a full bag of refractory cement

    for these 2 cores ones a 4 1/2" internal x 27" high the other is 16" high x 3 1/2" internal

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    did it go wrong when you didnt want it to do,

    yes it did had to do a quick repair to both sides as both sides split open on me

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    hope it comes out ok but waiting to see now if they do or dont as once you start to mix it you cannot stop for nothing as it soon starts to go off

    started at 7.00pm was finished by 9.30pm including the repair to it
     
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  14. gaz1

    gaz1 Forum Supporter

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    stripped down now after 40 hrs has passed here is both cores so you can see them total cost about 35.00 to make both casts with perlite 1/4 bag and refractory dense cement 1700C i got

    small core 16" high x 5 1/2" wide

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    secondary air inlet

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    big core 29" high

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    as you can see this was made using 4" round guttering also very easy to split from the main form

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    total size is 4 1/2" vortex as the internal wood split ot out further made it easier to seperate the material as its really flexiable
     
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  15. gaz1

    gaz1 Forum Supporter

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    a small prefire not enough to crack the newly made cement but just enough to test the vortex on the system

    blow lamp there just to aid while high winds are around whilst lighting the tunnel area to the vortex tube

    small one
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    big one

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    now its allow it to dry slowly but can be speeded up by using another rocket heater i have

    its a week for it to dry out normally after dry out time should be like this

     
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  16. gaz1

    gaz1 Forum Supporter

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    right these are the last pics until the units are built up for both of these systems I have kept them within this thread and didnt want to post them all over the site

    ive provided how they have been built and the information that is needed to build these type of wood stoves all depends on your mix that you want to use a 1 to 1 ratio or a 2 to 1 ratio of refractory cement and perite mix I used dense 1700c
     
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  17. gaz1

    gaz1 Forum Supporter

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    Location:
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    this is a smaller build rocket stove ive built it due to that im being cooked out of my 11' x 9' shed

    im installing extra air pipes so it can be heated much better but also have changed the firebox into a bigger one with an ash pan collection

    this is 3/4 built using gasless wire and still needs a clean off to it

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  18. bigegg

    bigegg I drink and I know things. Its what I do.

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    That lamp post would make a lovely chimberley
     
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  19. gaz1

    gaz1 Forum Supporter

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    the videos for the above stove

    the chimney is clean burn ive now named the rocket stove turbo rockets stove 2 as is an update to t2h turbo rocket system with firebox and a bigger heat exchanger

    it does hit 1000F on start up of system and then settles out at around 800F does go lower if i lower the preheated air input into system

    this system will heat an area of 11ft x 9ft x 8ft high no insulation on building but can heat a much bigger area just as it stands with the tubes inserted it can heat a much bigger area than this as its really warm in the building

    both videos are 22 mins long

    part 1



    part 2



    9pm come in checked at 11.20pm temperatue still at 72F degres no fire inside of the firebox using pinewood to burn 6x2" beams
     
    Last edited: Dec 2, 2016
    ukracer likes this.
  20. ukracer Forum Supporter

    Does it work better with the big grey pipe at the back? ;)
     
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