Brooks Miller wrote:hi frank - thats awesome - looks like you've spent some time with sketchup!
Bradley Ruiz wrote:
the next step is to insulate the chimney to 1.5 in of the inside diameter of the burn barrel
barrel = 22in
insulated riser will be 18"
allen lumley wrote:Amos V. : You have built a Rocket Stove base with a Heat Riser that looks like it is only sized for a maximum 6'' sized horizontal pipe run thru your thermal battery.
If you have already gathered your 8'' pipe then we will have to rework your Rocket Stove Base. I feel a little guilty about the fact that you are in this mess, I started
the '' Rocket Stoves in green houses, a forum of our own '' and then went off line for most of March/April please let me know how far you have got on your build and
I will work with you to save all we can out of this growing season. Again let me say how sorry i am that you and a few other people were 'left in the lurch !'
You can contact me here, and I will give you all the time I can!
For the good of the Craft! be safe, keep warm! PYRO Logically Big AL - As always, your comments are solicited and are welcome A.L.
allen lumley wrote:Amos V. : My Family motto ought to be 'if it ain't broke don't fix it! I do not have any problem with anything I see now, what are the dimensions of your bricks!
I like the area that you left yourself for a clean out, but in order to slow the thermal syphoning of heat continuing after the fire goes out you want to be able to
seal it up to the same height as the top of the feed tube. If it is all one flat plain you should end up with little or no syphoning, and an easier way to cover it up
if there is some.
You have to treat your thermal mass stove pipe as an expendable form, that is why you see other builds with the entire trench packed with cob, it becomes the
tube through the ground and is the best heat transfer medium that we could have after concrete which is so permanent!
I will look at all the videos again if you find that you have a problem !
For the good of the Craft! Be safe, keep warm! PYRO Logically - Big AL - - As always, your comments are solicited, and welcome !
Amos Valenti wrote:Ok great. I will shoot a video of that area tomorrow. I tried to leave sufficient room for the exhaust to pass into the duct work. I will take some measurements during the video to provide as much information as possible. It is definitely 7x7 I was trying to keep the CSA consistent through the feed, burn tunnel, heat riser and exhaust. The exhaust has a slightly larger CSA than everything else.
allen lumley wrote:Amos V.: Now you've got me guessing! The gap between the top of the Heat Riser and the inside of the top end of the Barrel should be in the range of 2'' - 3''!
I think that you are cheating yourself of some of your Rocket effect, the rapid flow of gas that causes mixing and complete combustion! The easiest way to test
this is hook everything up and run it! A steel probe type thermometer should show you if you are truly getting the heat made by your rocket to the far corners
of your horizontal run. If you don't have a clue what type of probe ask your better 1/2, the old fashioned type stabbed into a big piece of meat ,or thanksgiving
turkey will do if given enough contact time !
Talking about special tools, we need to snip away at the horizontal stove pipe that pokes its way into the Rocket stove base. The entire top edge seen at 2:06, it
would be much better to have that part gone, and have a gentle sweeping transition from the bottom of the barrel into the start of your horizontal run. Rather than
tear everything apart, I want to suggest seeing if you can find, borrow, or buy a Coping saw, thats a hand tool that allows the blade to be set to cut forward or
sideways - you provide all the other angles, cut and remove or cut and fold up and then go in there with a Smooth batch of cob made with clay and fine sand, you
want the gases to sweep thru this area, and out the horizontal pipe, every bit of time you spend working on this will pay you dividends, It should be and stay as
smooth as finished sheet rock This is the last place that the fly ash from your fire can/will settle out ! and you should have planned for a large ash pit and a good
sized clean out at this prime location! If your rocket does not sound all that Rocket-y then I expect that you will get ash build-up there, especially if the walls are
not slick and smooth,with gentle turns !
Oh! and by the way you are teaching yourself a bad habit, the large end of your wood always gets loaded towards the bottom of the Feed Tube, following this rule
will generally prevent the wood being fed into the fire from wedging together and hanging up! This will equal no fire!
- - - ' Other than THAT ! Mrs. Lincoln', 'How did you like the play ? ' For the good of the Craft! B.S.,K.W.! PYRO Big AL Your comments solicited/welcome ! A.L.
allen lumley wrote: Amos V. just caught your comment on my location. If you Know your collages I'm near St. Lawrence Univ. and Clarkson. Paul Smiths' is over an hour away, but thats
because the roads don't go that way ! Hope to
hearsee your next post soon - with good news ! ! PYRO AL
Amos - there is the normal amount of stuff in my life - A LOT! If this note gets to you too late I'm sorry, let's just blame my T.B.I.!
If you find that I have not addressed/answered a specific question that you have asked, Just assume that I missed it!
Don't lower the Barrel raise the Heat Riser ! Let Me say that again, any time you have the chance and the materials, " Don't lower the Barrel raise the Heat Tube !''
This will increase the distance that you can 'push' the hot gases, and the amount of heat that you can deliver to the far reaches of Your Thermal Mass ! It could happen
that you start to raise the exhaust gas temps but we have plans for that !
For the good of the Craft! Be safe, keep warm! PYRO Logically Big AL - As always, your questions/comments are solicited and are welcome ! A. L.
Joseph Fields wrote:I know this is a little off topic. Does anyone have any kind of removable insulated hip walls in your greenhouse. I was thinking of filling some sandbags and building hip walls around the inside to keep the cold from creeping in at ground level. Then I recalled how much filling sandbags sucks and thought I would ask for advise. I was thinking wood chip filled bags would be a lot lighter to take down in summer time.