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 Trying to heat a 5,000 sqft log home with my rocket stove

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gadily
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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Sat Dec 12, 2015 12:29 am

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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Sat Dec 12, 2015 1:13 am

That's a cool rocket stove in the vid.

There is a lot of air holes. I guess it just takes it when it needs it?
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gadily
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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Sat Dec 12, 2015 2:32 am

well to me for the primary air if your doing the build like t2h id either run a side channel or an underneath channel of air instead of using the round tubing

something like this



t2h uses underneath side works fine ppotty uses underneath and firebox sides to heat the incoming air

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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Sat Dec 12, 2015 8:45 am

It is getting really tight with all the pipes. If anybody else builds one like this it should probably be wider.

I'm trying to get things ready to pour tonight!
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gadily
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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Sat Dec 12, 2015 9:54 pm

at that point id have considered a different approach or an adjust to my build than waste a pour

I do hope it comes out well for you
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Mon Dec 14, 2015 4:12 am

so far so good...



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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Mon Dec 14, 2015 8:59 am

The Crisco didn't work. Had to cut, pry and split it at the seam to get it out.

The refractory material held up great and I wasn't easy on it.



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gadily
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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Mon Dec 14, 2015 10:34 pm

looking great so far thanks for the info on the crisco not working and i still have to do my mold yet as havent done it yet as too cold to make it

I was on the lines of using thick cardboard then at least the centre could have been burnt out

I will see how mine goes on for taking centre out when i do it
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Tue Dec 15, 2015 4:09 am

Double vortex baby!

https://www.facebook.com/knute.irwin/videos/796849013776377/

edited to include pics : ( gadily )



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gadily
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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Tue Dec 15, 2015 10:14 pm

I would have thought it was a little early to be doing a pre fire of it just to run a little test to the formed cement

very nice looking there and also created with a very shallow V at the back

looks really well as the pics show you have got a double vortex within your riser tube

this build will look interesting on how it performs
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Tue Dec 15, 2015 11:56 pm

Just following the instructions.

The inside of the riser tube got up to 1400.

The outside 750.
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Tue Dec 15, 2015 11:57 pm

Took about an hour to get up to drafting temp.


Last edited by knute_gis on Wed Dec 16, 2015 12:13 am; edited 1 time in total
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Wed Dec 16, 2015 12:04 am

heres a vid with it up to temp and secondary air on

https://www.facebook.com/knute.irwin/videos/797278423733436/
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Wed Dec 16, 2015 12:08 am

I think the thought of creating a focal point from T2H has more to do with the double vortex. The V in the back just helps it along.
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gadily
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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Wed Dec 16, 2015 3:00 am

saying that i could see an advantage at the back as that would get superheated and could be used for an extra air supply introduced at either side of the v shape

it looks good and red hot down there i also see waves of heat coming up the sides and every now and again see a lick of fire coming up the inside of the riser more so near the end of the video
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Wed Dec 16, 2015 3:20 am

You would think so but the v would be about 800 when the wall across from it, just above the firebox hole is around 1400.
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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Thu Dec 17, 2015 2:16 am

That is pretty darn impressive, 1400 degrees just right at the sweet spot.
You can really see gasification taking place.
Really very nice.

My thoughts now since we are seeing more and more a move towards using refractory materials that consideration would be to forming the firebox and riser tube separately that can be joined and replaced as things wear our or burn out.
If you already considered this in your build and I missed that I apologize.

This really is exciting, this is something that can be easily adapted around the world no matter what your status is.
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Thu Dec 17, 2015 5:10 am

I'm sure having separate parts would be nice for mobility and replacing parts.

If my burn chamber needs replace and the riser tube is still usable, I'll just cut them apart.

I love having all the mass though. When I let it burn out it was still 400 degrees after an hour sitting outside on a windy evening.
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Thu Dec 17, 2015 7:35 am

What is a good temp for the top of the heat exchanger? I was hoping for 800f.
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gadily
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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Thu Dec 17, 2015 12:49 pm

ive been looking at making a former for them and the way i see it its either do ppottys way or splt the cast into 2 halfs

there is another way a riser tube and a burn box thats seperate and this is the way im going the burn box is easy to make the riser tube is not however can be split again so its 3 seperate parts to the build

making the former for the inside is not easy but i think ive come up with a way to do it so its expandable to different sizes

the problem is seperating the form from the mold ppottys is very ackward to do and i think ive solved it the outer shell is easy to do and should seperate easily
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Thu Dec 17, 2015 2:17 pm

If your using foam like I did for my horizontal tube, make sure to leave it hollow in the center. Wouldn't need to be big maybe an inch diameter.

There needs to be a passage to help the flame enter to burn it out. I got the front too hot too fast while trying to melt the foam.
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Fri Dec 18, 2015 12:49 pm

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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Sat Dec 19, 2015 5:30 am

I need to reduce my stove pipe to 5" from 6" to get it through my block wall.

Do u guys think it will still draft good?
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gadily
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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Sat Dec 19, 2015 6:40 am

yes it will be fine doing it that way just leave at 5" and not move it back up again

what happens is that you speed it up with going smaller but the same air is still being moved through the system
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knute_gis



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PostSubject: Re: Trying to heat a 5,000 sqft log home with my rocket stove   Sat Dec 19, 2015 6:53 am

Thank you
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Trying to heat a 5,000 sqft log home with my rocket stove
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