I have a question , what's the best way to determine how clean my stove is burning ? The only tool I have is an IR gun. I built (modified) my stove to accommodate my wood source which is narrow strips just under four foot long. The average thickness is around 3/4x1-1/8", with extremes from paper thin( the bomb for fire starting) to strips that I must rip in half to fit the feed tube. For now my wood source is green with a lot of moisture, but the heater has no problem reaching over 1000 F on top of the heat exchanger. One thing that's come as a big surprise, secondary air doesn't give a temperature increase unless I have the feed tube completely full . So for now I'm not using it. I light a tunnel fire and once the heat exchanger reaches 500+ F, I close my tunnel door and open the feed tube to fill it with wood. Once I close the feed tube , the temps will steadily climb to 900+F . I get around two hours before the heat exchanger drops below 600 F, then I refuel. It's nice that I can leave and come back hours later and simply drop in some thin strips of wood and the stove will fire right off again from the coal bed under the feed tube. I haven't had any issues with back flash when opening feed tube to refuel. I do have creosote in the feed tube, but no issues with that. I have been amazed that I can reduce primary air and still maintain 900F heat exchanger and have 180F Exiting the heat exchanger . I built A really nice transition coming from the heat exchanger to the flue pipe . It's 8" in height and tapers out 18" to receive a 7" pipe. I have 18' of pipe inside the shop to extract as much heat as possible. The stack going through the roof is a 5" double wall pipe. So my pipe starts out 8", then seven, then 6", then 5". Thanks to everyone for all the shared information because that made my stove build so much more successful.
Thank you Matthew, I appreciate the reply back . I have watched your YouTube stove videos many times and got a lot of good info there. My riser is still metal, but I lined it with duraboard. I think I'm ready to try and build a new stove with a refractory riser and burn chamber. It's so cold here in Kentucky, I'm having to run the stove full bore because of condensate in the exhaust stack.
Did you take pictures of your barrel-to-flue transition?
I built the feed tube long enough to hold the wood (as is from the pallet mill) without having to cut it. I get around three thousand pound bundle for seven dollars.The feed tube is roughly the same height as my riser tube. 48" riser and 50" feed tube. I have noticed when I get the feed pipe loaded with a good hardwood like hickory and red oak the temperature on the exchanger will reach over 1000f. But at this point the expanding air slows the draft down to where the feed tube wants to overcome the the riser if I open the lid to the feed tube. It's no problem because I don't refuel until I hear the stove start cooling down as it's running out of fuel. I will try and post some photos, bare with me because I'm a total novice at this.
Smokeout do you use a p-channel? I wonder if this would help the burn at all. You may need to cover it at start up but I believe it would help greatly once you have good draw established. Might take some creative adapting for such a tall feed tube, which is interesting to have.
kkp: Mercedes: Benches don't get real hot. In fact, they are rather cool compared to other areas. You shouldn't need a mix like you described
Jun 7, 2018 18:10:52 GMT -8
maartenmartens: beste Peter, ik heb je eergisteren een mail gestuurd via het contact formulier op je website , heb je die goed ontvangen ? mvg Maarten Martens, architect - geobioloog (mail betreffende de bouw van onze eigen RMH)
Jun 20, 2018 13:21:57 GMT -8
martinm: any one here with info \ experience with heat (from a mass heater) distribution with ducts throughout two storey house ?
Sept 8, 2018 22:58:52 GMT -8
padica: Good morning, this is a wonderful subject, please someone can help me with the theme of double and triple combustion, how it is achieved, theory and design, thank you
Sept 15, 2018 7:13:40 GMT -8
wiscojames: I'm afraid you won't get a response to such a vague question - I suggest reading through some of the threads related to your questions before asking for an explanation. People will be very generous with their knowledge if your question is more specific.
Sept 18, 2018 4:48:00 GMT -8
daniel: in my experience as I am working now on something of that nature, I have thought of making a heat exchanger and distributing the heat through vents using a slower fan. Now after a few years I realize that mass heaters give out primarily radiant heat, for
Nov 30, 2018 12:48:38 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place...
Dec 16, 2018 18:10:49 GMT -8
vesuvius: High Temperature Glass options,
Jan 4, 2019 16:28:17 GMT -8
vesuvius: Do any of you have experience with using the glass from home oven doors on a rocket stove? I'd like to have a viewing port on my stove but don't want to fork out for new ceramic glass. Any thought as to whether it would take the heat of a rocket stove?
Jan 4, 2019 16:30:40 GMT -8
yaya: you dont need the blowair for that temp..
Jan 13, 2019 16:43:57 GMT -8
flybywire: Glass window from an old washing machine is designed to take high temps. Cheap solution to your need.
Jan 27, 2019 0:10:58 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place to have a discussion... it is for short announcements
Feb 7, 2019 0:11:23 GMT -8
coastalrocketeer: you won’t likely get replies to questions here, and it is not a spot that makes holding an ongoing discussion possible...
Feb 7, 2019 0:12:22 GMT -8
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me!
Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING.
Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money?
Aug 20, 2019 18:41:48 GMT -8
mannytheseacow: michaelegan: download AutoCAD student version for free... import .SKP
Aug 23, 2019 13:33:44 GMT -8
topbaza: hi everyone, been searching all over net and this is were i need to be i think!!
Sept 28, 2019 6:16:25 GMT -8