Rocky Massengale

Thank You Sir
Did you see the picture? I was concerned with the additional distance from Riser being an issue, that is the reason for the question, but also for that possibility to build it later, as I realize that the Batch box is a greater undertaking vs the J tube !

Also, this is the 1st time seeing this post and have not seen any conversations regarding external air intakes as of yet !

Thanks

Meni,

This sounds feasible to me, but am a newbie at this RMH stuff and am just in the process of getting all my ducks in a row before I build one. The need for air at the intake is guaranteed and i have been thinking about that due to the configuration/location of my particular system. i have been contemplating feeding the air from outside to get that negative pressure inside, as you have discussed here and because I haven't begun my build yet. i  think that am inclined to at least make an attempt of implementing (at least for testing sake) an external air supply, I feel that is a worthwhile attempt at alleviating that issue. My concern is that the flame needs to stay near the RMH burn tunnel, not from a distance as my design is centered in the lower part of the cabin, therefore the air supply is all I am interested in, it is not my intention to be able to "feed" the fire from outside, just provide the air. I think that is a much needed investigation to determine if that helps with maintaining heat containment inside !

By the Way, am glad someone else has had the same thought !

Thanks for the "Re-enforcement"  of my thoughts on the subject !

Funny Cartoon, but askin a Question, is my mind is never a wasted Breath, all fabrication of RMH is subject to modification and having the ability to improve is never Wrong, if feasible !

Might not always need the Batch Box, just a early J tube use to take the chill off ! Batch box could be a later undergone project in the future, just askin about functionality ?

Gerry,

Just an idea for consideration, Feasibility Not Documented anywhere that I can find, but seems doable if system is in operation and draw is acquired via Feed Tube, Then after a continual draw is acquired switch to batch opening for a larger load in the Batch Box ? have you seen this application attempted ? Did you see the other pics sent earlier /

Has anyone ever attempted to install a batch Boc at the end of a J tube, so that once Rocket Stove is fired an d running, you close off the feed tunnel and open the end of the heat tunnel which is connected to a batch Box and then fed from there ?

By the way, Gerry, I have revised the J tube to be an 8" while maintaining a 6" chimney, I don't remember ever telling you that the riser enclosure is not a barrel, but is a 36" long piece of 24" Schedule 20 SS Pipe instead of a barrel, I just have to devise a way to make top removable and provide it with a good seal so that I can access the inside during off season for cleaning and inspection. Once in progress of building the RMH I may shorten burn tunnel some to get closer to 24" but as of right now in (the drawing Stage) it shows that it is 26 1/2" long.

Thank you Gerry for explaining your reasoning, and of course on the documenting and obtaining Photos of the build, would definitely like having input while construction is in progress, due to the type of materials used and getting feedback for most proficient method for next steps will be appreciated and incorporated to ensure I am advancing to the ultimate goal of heating the cabin home as efficiently as possible. I have many ideas about using this RMH build for water heating and am planning on using the water heated in the system I have designed for our Air Conditioning system without a compressor. Using the well water which is an Artesian well (puts out about a gal a minute since drilled 7 years ago) temperature of water is 58 Degrees which I will  be using to cool the cabin in summer time while using the warmed/heated water thru the same coil in the winter for heating. I have ductwork from pre-insulated pvc pipe to distribute air throughout the cabin already design with a small blower 9800 cfm) in supply plenum to circulate this cool/warm air. We are building this in an area that is totally off grid as we are surrounded by National Forest and Wilderness, therefore totally off grid and have 2 solar systems both 12kw with 54 solar panels + 2 wind turbines to collect power even when the skies are not cooperating due to clouds or darkness. This place has been a Science Project from the beginning and will be a mechanical, ecological wonder of self containment once completed. My water system is a project in itself with the way my cold/hot water system is maintained with pumps for each side (Hot/Cold), with pressure switches, flow meters, which control pumps maintaining pressure and when they come on and shut off for pressure throughout the cabin for showers, lavatories, toilets, etc... I expect the entire place once complete will be interesting, one of my friends, said "You could probably sell tickets for tours", but that'll never happen, due to the fact that, where we are, deep in the woods, I relish the solitude, peace n quiet ! Our cabin has no bath tubs just showers, but my wife asked "what if I want to take a bath ?"  i told her I would build a bath house separated from the house with a wood stove so she to indulge herself in private, so my friend (mentioned earlier)  was using an antique tub to water his cows, so I traded him a very large SS tub 28" wide x 30" Deep x 80" Long for it and I had the tub redone for her, so with the antique stove and tub for the bath house she is gonna be in a private heaven !  We already have an outside shower built for showers outside in the summer built from SS n Cedar, I hook up the SS warming tank (close to the pump house) with a pump, so we can use the sun warmed water to shower with at the end of the day before retiring for the days work and dinner. pictures below of a few of the items mentioned !  

First, the original question was asked, the 1st line States :   I read this criteria online, What is the prime target Dimension? Then the info online was posted about 6" and 8" Risers. i was attempting to get a definitive answer, seems as though someone responded and said that some folks has put an entire barrel atop 1st barrel to accommodate the heating of an area, while also stating that if you wanted to be able to cook or have a hotspot for warming put the barrel top to the minimum distance. Surmising that different applications of the system entirely determine this distance. Therefore, I looked online to obtain criteria and then posted that on my question post about the distance. Does that explain how and why the answer was shown at the bottom of the post ?