I've read through a couple pages of questions on here and the experience sounds awesome. One thing that's unclear to me though: is this a year round program? February 4th comes up as a date, so you guys take a break? I work seasonally in the masonry field so I'd like to come around January through February and maybe beyond if I feel like I'm learning a lot.
The other question I have is where exactly is this place?
So what would be a safer way to do this? I heard if you leave it open on both sides the heat will pull the water through the coil through convection like a still. I could at least use this to bring hot water slowly to a higher location for a hot shower?
I have this RMH, it's my first build and works alright. My house is entirely off grid and I haul water from another source. I am trying to get as close to hot water on demand as possible while also keeping it simple. I have a copper coil and I'm wondering if I should just wrap it around the outside and connect it to a foot pump, coiling up to the top where a spout would let it dribble out. I've also heard there are Danvers involved but I don't understand how. Thanks.
What is fly ash? Also realized I forgot to add the spacer like I planned! Gap was 5 inches. Put spacer in to make it 2.5 inches. Just put it together and works even better! Yay! Dimensions otherwise are 8 inch system 7x7 burn chamber 7.5 highx7. 35 feet of pipe after accounting for 3 elbows. I guess I'll let this run some more and see if I get buildup.
Greetings. I'm still in the process of adding more mass to my bench but my rocket seems to be working perfectly. The only concern I have is in my first inspection I noticed a black goop accumulating at the clean out at the vertical exhaust. I also put my hand in the final exhaust cap above my roof and there was some black soot accumulating. What could this be? Signs of a serious incomplete burn? The exhaust comes out warm but not hot. The exhaust is also dripping hard. Thanks!
Are clay bricks a no go? They are super heavy and it's what I have. How will they compare to concrete? I lined my stove with the clay bricks and I don't know what these lightweight gray bricks that were lining an old basement are but would they work? Thanks!
I know this set up looks ridiculous. There is a heat riser under the barrell and a mass. Aside from losing the double burn isn't this practical for burning huge logs of that's all you have? The smoke comes out cold but not as clean. Please share your thoughts.
Posting because my question is very relevant...
I just finished insulating my heat riser with ceramic fiber board. The dimensions were luckily quite close to my dense firebrick riser but I stabilized the boards together by pushing steel wire through them. There are some air gaps in the corners some possibly as big as a half inch, and as my riser isn't perfect there's a small air gap between the boards and brick. I know this is not optimal but will it still make a huge difference? Also I offset my barrel forward (so the chimney is more towards the back of the barrel) and removed the insulation on the back side in thought that the heat in the back but cooler air in the front (where my transition is) will help push the air towards to cooler part. Would this help me or hurt me and why or why not? I already set the barrel and forgot to take pick <.> Thanks!
Genius! Thank you! Is it necessary to be air tight to be sufficient? Tucking in all the corners in the odd spots to prevent hot air from escaping through the sides if that makes sense? And I should expect the metal to melt over time and the fiber will hold its place? Also I just realized will that fireplace steal a significant amount of heat if left unsealed?
Now looking into insulation there seems to be no simple solution to insulate the fire bricks... I'd like to use ceramic fiber but I can't think of a way to get it tight around the bricks. Rockwool doesn't look reliable either. What's the best option for my situation?
Thanks for the replies guys! The system is 8 inch. What do you mean it is appropriate that the barrell is 2 inches away? I'm going for more immediate heat for cooking since I live in Michigan in in a concrete house with lots of access to wood. The most I've ran the system is about 20 minutes so far. Maybe 2 good handfuls of wood. I haven't cooked on the barrell yet but it's too hot to touch lol. What factors effect the combustion efficiency? As far as insulation I will look into rock wool but I don't want to make the gap at the side of the barrell too narrow. How thick of rock wool will do the trick? And the side gap should be like 1 to 1.5 inches on each side of the barrell right? Thanks!
Greetings. After fiddling with my first RMH build after much research it (kind of) works! Perhaps my oder of operations is screwing me a little bit though. Anyways it draws mostly so far without exhausting above the same plane as the rest of the system once I vent outside. Now so far I'm at about 40 feet of pipe just to make it outside. Can I add 15 or 20 feet of vertical exhaust without consequence? I messed up in my burn tunnel dimensions also. It's 7 wide by 5 high and I know it should be taller rather than wider. Is it possible for my burn tunnel to be too short however? Also the smoke seems to be going where it should be but I noticed in someone else's thread they have an elbow to ease transition into the mass. Is this necessary? Also, as the outside of my fire brick heat riser heats up over time and (assumingly) matches the inside of the heat riser will this cause problems? Gracias!
Hello all. I'm attempting to make a cob "slip" to mortar together my bricks for a heat riser. I hear a 50 50 ratio is good. Some bricks cemented very well and some horribly. The ones that came apart had the texture of rough wet sand. I have a feeling I didn't have enough clay. I added pure balls of clay I found and it seems impossible to knead it into the mix, I can only make the clay into smaller and smaller pieces even after soaking it for a long time. In my area I seem to either have pure sand or pure clay. Should I dry the clay and pound it to dust or what should I do to incorporate it better and ultimately have a more effective mortar? Thanks!
I'm not sure if I understand your questions. The chimney is a foot and a half by just over 4 feet wide. Probably 20 feet tall. It seems structurally intact. I live in Detroit so it gets to be as low as -40 sometimes? The chimney is pretty built into the structure. I don't understand your last paragraph. It comes out maybe 1.5 feet to 2 feet outside. I think the whole system is straight brick but I couldn't say for sure. What do you mean by using the fireplace as part of the mass? If I exit outside can't I just put a wind cap around it? Is there a chance that venting into the chimney it might not be able to rise out the top? I just don't want it to sink back down and kill me. Having kickback out the feed tube is one thing, having it not make it out the chimney is another. It would be better functionally if I can vent out the wall because I could make a longer bench. Regardless aesthetics are of no concern. Thanks!
So I'm still a bit confused on whether to vent horizontal or vertically through chinney. My friend is telling me it won't come out hot enough to make it up the chimney and it might sink back down. He recommends running along the wall and punching out the wall near the window to keep all possible leaks contained. If venting out the chimney should I plug into the pipe sticking out and close the flue below it or just have an elbow facing up at fireplace level and open the flue? Thanks (:
I'm a bit confused on RMH exhaust. In a typical wood burning stove exhaust is vertical because the fire is hot and wants to rise. With RMH I'm under the impression that all the rise happens in the heat riser and this pushes the "cold" air in whatever direction, and must fight gravity possibly? So, aesthetics aside, should I keep the system horizontal and vent sideways or plug into the chimney and expect it to climb 20 or so feet more efficiently? Some explanation would be awesome also.
Hello all. Attempting first RMH build. Building the system out of brick. Due to material limitations some parts will be made of firebrick and some with concrete blocks. I'm wondering where the hottest points in an RMH would be so I make sure to use firebrick there. Thanks!