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 rough but it works

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maddmacc

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PostSubject: Re: rough but it works   Sat Jan 17, 2015 6:31 am

Hi Trying2Hard
minor correction if i may : )
" even like Jet lee when he was making movies, but he was nothing like his father "

Jet Lee is actually Jet Li
http://www.biography.com/people/jet-li-241077

Brandon Lee was the famous son of Bruce lee.
Bruce also has a living daughter, Shannon
http://en.wikipedia.org/wiki/Shannon_Lee

As I say, I am a fanatic fan : )
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maddmacc

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PostSubject: Re: rough but it works   Sat Jan 17, 2015 6:33 am

As to the stove build,
I should be getting more done this weekend,
Also m I like your tip on the chicken wire around the riser bricks, for more stability.

Cheers
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T2H
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PostSubject: Re: rough but it works   Sat Jan 17, 2015 12:51 pm

Ya, I realized later I screwed up.

Brandon Lee was on the mind but Jet Li came out:>)
Bruce Lee is taking time out in a graveyard about forty minutes from me.

Man you and Loz......ppotty1, and a few others got me wanting to try my hand at some refractory work.

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maddmacc

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PostSubject: Re: rough but it works   Tue Jan 20, 2015 8:01 am

Just been looking at refractory cast-able mix also, but maybe later:

Any hoo, latest update , and yes the camera is in correct format now " Doh "


Also just cut the " fire pit " bricks and added an XPM base for ash to drop through.
More vids to come : )


Last edited by maddmacc on Tue Jan 20, 2015 8:02 am; edited 1 time in total (Reason for editing : typo)
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maddmacc

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PostSubject: Re: rough but it works   Tue Jan 20, 2015 8:07 am

Also note
That the bottom rim, where I added the thin metal banding to guide the top to the bottom, is such a fine fit, I am not going to add the " Fire rope " as I don't think I will need it.
However I am going to seal that edge with the high temperature " Duct Tape " used in home furnace duct work etc.

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gadily
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PostSubject: Re: rough but it works   Tue Jan 20, 2015 8:36 am

very nice

im having to watch this since i posted what i said as ive never seen this done

query would it be better making a metal frame underneath the lavarock than the bricks as i believe it would help matters with the flow through of air through the lavarock

come to think of it will you have enough flow past the bricks

or should i shut my mouth and wait and see the results as im more curious about the build your doing
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maddmacc

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PostSubject: Re: rough but it works   Tue Jan 20, 2015 9:10 am

hi gadily,
All comments are welcome.

The lava rocks do sit in a complete metal XPM basket, its just not visible on the video,

My concern about the flow also, but due to the fact I used the larger size firebricks for the " bottom half ", don't think I can do any better , but maybe use brick disk on my angle grinder and trim the edges of the brick.

Another option could be to raise the bracket, after all it is just sitting there.
I already have an idea about that also, 4 small " L " shaped brackets, screwed to the riser tube upside down, with the basket sitting on them.

So maybe halfway up the riser tube

Would maybe help the flow.
Soon see

Cheers


Last edited by maddmacc on Tue Jan 20, 2015 9:16 am; edited 2 times in total (Reason for editing : more)
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PostSubject: Re: rough but it works   Tue Jan 20, 2015 10:53 am

id use an L shaped bracket from the base only needs lifting 2 " high to give a good flow underneath the basket

or sort of hanger basket brackets that is strengthened to support the basket i wouldnt screw to the vortex tube

also the brick id cut the outer corners off than cut the back of the brick
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PostSubject: Re: rough but it works   Tue Jan 20, 2015 12:43 pm

It will be interesting to see how this performs over time.
I am really interested in how the lava rock effects the drafting.

If this works, the lava rock may be something to consider as a filtration, good idea man.

If it does work well, it should filter out a lot of the ash, but that may create an issue with clogging.
If that happens, you may get away with adding some kind of mechanism to shake up the lava rock and shake loose any particles as it clogs.
That way you will not have to do maintenance cleaning too often.

I had to clean my system about every three or four weeks, had a great deal of ash build up in the bottom of the tank in mine.
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PostSubject: Re: rough but it works   Tue Jan 20, 2015 1:35 pm

I plan doing the same to these bricks as I did inside the riser, as Gadily points out, I will only be trimming off the corners.

And yes maybe only raising the basket a couple of inches may suffice,
I do have a few feet of sturdy perforated angle iron, could make a small frame to lift basket .

Also I dont wont to make it top heavy, which I doubt would happen as these bigger bricks weigh quite a bit, plus the tank bottom and the metal frame etc.

As to clogging,  well never even thought about that, but cleaning would be a breeze, as the tank top, lifts off in seconds, exposing the guts to a shop vac maybe.

But if the burn is clean as I expect, maybe very little ash.
I also think this now to be a " Multi Fuel " device .

Wood, Pellets.
Propane and house gas, as per part my earlier post " However, here is something esle I played with,
Weed Dragon - Propane Torch,

Light it, turn up the valve to get a good flame,
Insert into burn chamber horizontally,

worked frigging great, even though I did not have the tank on yet, it helped cure the furnace cement
which seals the firebrick joints, and did give me some heat in my cold garage"



I have run a  test burn with the modified  " Weed Dragon - Propane Torch "
and I stood on my workbench , 5 feet higher than the top of the riser, and man It was bloody hot.


See this quick vids



Last edited by maddmacc on Sat Jan 24, 2015 12:48 pm; edited 2 times in total (Reason for editing : added 2nd vid)
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PostSubject: Re: rough but it works   Tue Jan 20, 2015 2:25 pm

One other idea would be if you could ignite remaining smoke and gazes at the lava rock basket if you supply a bit of air. The lava rock as to be hot but since it is at the base of the riser tube, I suppose it will be very hot indeed...
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PostSubject: Re: rough but it works   Tue Jan 20, 2015 3:02 pm

Maybe going to need a glass door , to see whats happening after the Lava rock basket.

I guess initially, I can just remove the lower exhaust outlet to see whats coming out.
will give temperature readings when I get done and do the real test burns.

only a weekend warrior, so no updates until then.


Last edited by maddmacc on Thu Jan 22, 2015 6:19 am; edited 1 time in total (Reason for editing : weekender)
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PostSubject: Re: rough but it works   Sat Jan 24, 2015 7:48 am

Stabilizer,
I have decided that I should add a riser stabilizer of sorts, basically to prevent movement of the riser when I need to move the stove from build location to permanent location.

I know zerofossilfuel added a kind of band that connect to his riser and just about touches the inside of his tank.

Here is what I am thinking on doing.
( not my photo, remember my riser is brick , inside a 8 " stove pipe )


I will drill large enough hole for the screw to clear, weld nuts to the outside of my tank,  add screws with second nut for locking, , My screws will be turned only by hand just until they touch the sizer on all sides, then I will use a lock nut on the out side to stop any more screw movement

Thoughts


Last edited by maddmacc on Sat Jan 24, 2015 8:34 am; edited 2 times in total (Reason for editing : pipe)
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PostSubject: Re: rough but it works   Sat Jan 31, 2015 9:02 am

Back in town this weekend, so I should get more work done on the RS.
problem again is the -21 C ( -5.80 F) this weekend,
ah well , incentive to get the heater going eh : )
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PostSubject: Re: rough but it works   Wed Feb 04, 2015 5:07 am

More updates : )


Notes:
Firstly, it is -21 C ( -5.8000ºF ) outside brrrrrrr
When running on propane, I get a higher temp, than just running on wood
450 F = 232.22ºC ( on wood )
525 F = 273.89ºC ( on Propane )
we can easily see that the propane burner is a good clean almost blue flame, as the wood burn is still a bit orange,  I need to get the secondary air system installed better.
As you see in the videos I have a temporary 2ndary air " Pipe " .
I am looking at taking the tank off again, cutting directly into the lower end of where the riser sits ( below the basket ) into the side of the burn chamber fire brick.
Inserting the secondary air in there, and bringing it out through the lower part of the tank, at least there it will also get preheated.

Nice wood crackling sound , reminds me of the old fireplace days back in Scotland when I was a wee boy
More to come


Last edited by maddmacc on Wed Feb 04, 2015 5:15 am; edited 2 times in total (Reason for editing : crackling)
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PostSubject: Re: rough but it works   Wed Feb 04, 2015 5:11 am

" Obviously "

Man we don't realize the little idiosyncrasies we all have , well Obviously
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PostSubject: Re: rough but it works   Wed Feb 04, 2015 6:03 am

well done and thanks a priviledge to see it as well even with the lava rock installed

one thing get that secondary air as hot as possible and also do the same with your primary air

as gary and ppotty has found out as these bring further improvements in the heat stages of the system
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PostSubject: Re: rough but it works   Wed Feb 04, 2015 9:15 am

Thanks Gadily
I totally agree,
There is space under the burn chamber and in the bottom part of the tank.
So adding the feed for the primary and secondary should not be to difficult.

I also have another Idea in mind for secondary air ,
copper pipe, maybe about 1 inch diameter, wrapped around the outside of the riser, I have seen some videos where the builder used this for heating water, so why not heat the air intake instead.
or ever as well as the water , maybe 2 pipes ???? ( getting way ahead of myself )

Cheers
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PostSubject: Re: rough but it works   Wed Feb 04, 2015 11:08 am

maddmacc wrote:










Newest design concept


Congrats!!!
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PostSubject: Re: rough but it works   Wed Feb 04, 2015 2:01 pm

Very nice experiment. You show us that lava rocks can be used in rocket stove heaters...
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PostSubject: Re: rough but it works   Sat Feb 07, 2015 6:26 am

update
Its warming up around here , going to be +11 C ( 51.8ºF )tomorrow: Yipee
Will manage to get even more work done, on Secondary air mods, Ash pit and surround, and build a pellet basket.
Infrared thermometer gun is dead, waiting on new one , should be here next week, better temperature readings to come

Cheers all
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maddmacc

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PostSubject: Re: rough but it works   Wed Feb 11, 2015 3:42 am

Latest updates on build:


Added simple secondary Air inlet.
Using 1 inch black gas pipe, with outlet holes that sit in the riser area, to reignite any unburnt gasses/smoke
Man check out the best temperatures near the end of the video.

Nice and toasty, maybe I should get the garage insulated , keep this nice heat in.

Ash pan is made, will weld it in this weekend, Large burn box to be made as soon as I find some free steel.
More to come
Thanks Guys.
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maddmacc

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PostSubject: Re: rough but it works   Wed Feb 11, 2015 4:04 am

Best Temprature so far in this build:
886.2 F
474.56 °C

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PostSubject: Re: rough but it works   Wed Feb 11, 2015 4:40 am

query as you dont fully explain

but where is your tubing situated at ?

is it inside the vortex tube or is it within the secondary air chamber

im just waiting until you get the firebox chamber built and using wood but please do test on each build you may decide to change something else before final build of it
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PostSubject: Re: rough but it works   Wed Feb 11, 2015 7:20 am

The " Tube " ( the end with the holes drilled ) sits partly in the riser, the base of it is in the fire chamber, the input end comes up and out of the feed area, ( where I load the wood )

Let me knock up a drawing.
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