crazy ideas?

[morpho]

Hi again everyone.

So the building code guy's put the brakes on my house design.
I can't build the rubble trench foundation I wanted. ...so that changes everything!
They have actually forced me into the position that I will have to build on a substandard foundation...but...because it's in the code book....it's ok.
They will actually let me do a slab on grade without any rebar etc. simply because the footprint is so small. (not that I won't use rebar!...but it is stupid they will let me slop concrete on the ground and call it a foundation, but an 7' deep rubble trench foundation is a no go!)

Sorry! I digress.

How many 90 degree turns can you put in an 8" rockets horizontal run?
How many horizontal benches could you run from a single stove?
Do you think the stove would still operate if the horizontal run briefly left the building and entered another building? Like 3 feet underground or in a very insulated exterior box.

If you haven't guessed it by now I am possibly being forced to split the house into two separate sections so I can still get the square footage and not have to build a Very expensive 6' frost wall...but I'm still trying to figure out how to heat the whole thing with one rocket. Possible?
Any other solutions?

[Donkey]

There is a limit to how far you can push benches, elbows, Etc.
I just don't know exactly what the limit is. I don't know that it's ever been quantified.
As a general rule, I would say that one bench/wall/etc/ is enough with 2-180's or 4-90's..

The only way to know for sure, is build a test model, run out the pipe and try it.
Don't forget to post your results!!

Oh, since the building dept. dorked you over the foundation, how are they going to react to the stove?

[morpho]

Rocket Stove?...what Rocket Stove? This will be an add on after "The Man" has come and gone.

[Donkey]

Jun 27, 2010 8:42:51 GMT -8 morpho said:

Rocket Stove?...what Rocket Stove? This will be an add on after "The Man" has come and gone.

K, gotcha.

I've seen a six inch rocket fire an L-shaped 32 foot run w/4 90 deg. elbows. It's about the limit for THAT design, (Ianto Evens standard, from the book) though I can think of a couple features that might extend it somewhat.
An eight incher should be expected to do a little better...

Still, gotta build a mock-up and try it first. Just remember that only the first several feet (or so) will be getting most of the useful heat and the final exhaust needs to be hot enough to carry up and out. If you drop below the condensation point you will need to provide drain(s) for liquid water to leave the system conveniently. Drop much below that and the system will be unstable and more prone to wind problems, smoking and back-fire.
Ernie and Erica double the pipes back to the beginning and steal heat off the barrel for the vertical chimney. I think this is a GRAND idea and plan to make it a standard feature of my stoves.

[morpho]

I wonder if I simply put the rocket and bench in the main living space and put a air intake above the top of the stove and ran ducting to the other space using a little DC fan, The second space is only 12'x12' and shouldn't take much to heat up.
Might be worth a try.
I don't think I'll have it in me when all this is done to start experimenting with multi bench doomahickies with heat recovery units built in that will also heat my water and take the dog for a walk.

hmmmmm?
water heating...
NO!
Foundation first...rocket later!

Thanks again everyone.