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Aircrete Rocket Mass Heater Uses One Log for 13 Hours of Heat
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- Опубліковано 23 лют 2020
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About Dirtpatcheaven: Tiny house, tiny farm, tiny budget, huge life! Do it all with what you already have! Julianne shows you how!
#growfood #slowfood #vegetablegarden #wintergardening #homestead #dirtpatcheaven
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That's very impressive to heat that whole space all night in single digits temp - with just 3 quarter logs!! Fantastic
I am glad to see all the improvements and changes you are making around your homestead. It has been a while since you have made any videos about your animals though and I would love to see more about them. I think it was your animal videos that first brought me to your channel.
That's amazing. I like the rocks in the bench/bed idea. And running the flue pipes thru the rock bed pulls out a lot of heat.
Thank you, fair lady.
The 'morning after' temperature check was a great way to show the real-world effectiveness of this; because 'even though we've heard about its long-lasting heat': demonstrating it like that was of great benefit.
Love that you're working with Darwin on helping him to test and refine his design, and honestly documenting the process so we can follow along.
2:21 there is no energy inside the ice; Hence "energy does not dissipate OUT of..." ; It is true that breaking up a big ice cube into lots of smaller spieces increases the surface area which helps "to ABSORB energy and melt into water".
I wanted to type this, but I was too lazy haha. Thanks 🙂
I used insulated flue pipe OUTSIDE. Black liquid is history.
I also used a T flue at the base of the chimney, with a cap on the bottom, the center pushed out with a hole in the middle. It prevents the liquid from coming indoors.
This weeps liquid (outside) when the stove is running cool, just starting, or shutting down.
Wonderful build... looking forward to building my next stove.
yes, avoids condensation inside the inner pipe.
Very useful to see the rocket stove being taken apart and moved, amazing how light the main box and riser shroud are!
The condensate comes from heated moist air contacting the cool pipe in the bench. Same as when you come into a warm moist house with cold glasses on your face. They fog up. I use the same principal to dry the air coming from my shop air compressor. I run the hot compressed air through a cool condenser to remove moisture.
The 22 dislikes were the power companies.
i always wondered what became of you after little house on the prairie ended
All burning creates CO2, H2O and energy. As long as the smoke is over 100C or 212F the condensation does not happen. It happens in the cool chimney, so let the moisture drip outside by making a small hole for water to drip outside. Make the horizontal part of the chimney slightly crooked outwards to keep the liquid out.
the thermal conductivity and specific heat capacity of all common materials has been well known for a long time.... looks these up and spend an hour learning how to use then cab sane a lot of money and time on trial and error. Some amount of trial and error will always be useful though. FOr instance the voids in between the pebbles could be filled with sand or concrete fines , if filling the entire thing as a solid concrete or concrete fines could be superior to sand...... If one wanted to have a quick release from the thermal mass one might retain the voids and blow air through it for a time. Nice video!
Good stuff. FYI Ice absorbs energy to melt. If ice were to further dissipate energy, it would become colder.
First time seeing your rocket stove. Love it!
Well done video. I like building/playing with heaters as well as rocket stove hybrids in existing heaters. Its the way to go!.
LOVE 💖 LOVE 💖 LOVE 💖 your new stove.
We've been interested in a RMH for years, but had to do a cheater version (which I videoed) since we have a hardwood floor over a crawl space.
Your adventures with Darwin's stoves led us to his HoneyDo Carpenter channel and my hubby is so hooked on his designs. We're definitely interested in how this new model works out.
💥 Oh, and your water dripping issue - check the level on your exterior stove pipe. I had a similar issue on a wood stove in my home in Georgia. When we anchored the riser, it got pulled in towards the house too much and caused the horizontal to kick up outside. Smoke rises, but water flows down so you have opposing actions in that area. A small hole in the horizontal pipe (outside) will act as a weep hole so the drippage can go onto the ground (a dug out gravel area or a bucket helps).
Thanks for sharing another wonderful time with us.
Love and Prayers from Utah.
You are so kind to give me that insight. We are trying to get a cleanout for the base of the chimney outside to see if we can get that drip to drip outside.
@@dirtpatcheaven I'm not sure why you don't get creosote if the water is dripping down the chimney? Doesn't that mean your smoke is too cool - less than 212F - so it's condensing? These mass heater stoves confuse me - the Kang bed-stove Chinese heaters rely on the chimney being inside the house so that most of the chimney stays heated by the Kang bed-stove. thanks for sharing.
@@voidisyinyangvoidisyinyang885 In a properly designed rocket stove there is insulation around the firebox and the heat riser so there is plenty of
time for the combustion to complete and the creosote to burn up. As the gases leave the top of the heat riser they descend through uninsulated sections where the heat can be stored, or radiated or heat exchanged before leaving as much cooler gases in a conventional chimney. The cooler the exhaust gas the more efficient the stove but the gases have to remain hotter than ambient temperature in order draw. If they get lower than boiling point of water then they have to handle condensation as well.
@@richardgray2706 thank you for reiterating the principles of the rocket mass heater stove. Why is the condensation then the color of creosote? They said there is "ash" in the chimney but not creosote. So it's just from the ash I guess? ash water? Not dark brown-black from creosote water?
@@voidisyinyangvoidisyinyang885 When I light my rocket stove, creosote builds up until the insulated portion is hot enough. Water condenses throughout the exhaust path and does make sludge with this creosote until it heats up enough to evaporate but I haven't seen anything like the mucky water in this video.
yes julie your condensing steam.
insulate the outside riser or shorten it .
or
if you want to stay on the ground,
replace the lower outside 90 with a "t" with a bottom cap and a 5/16 hole drilled in the cap ( so the condensed water doesnt go back inside and leak from the vertical joint;
it drips thru the hole in the cap outside)
now as you duct outside air to your stove you get to keep all the heat you make. 30% more efficient. ( no heated air used to support combustion. cold outside air supports burn)
be well and be warm!
I've just missed most of your video trying to find my smoke alarm that needs a new battery. 😤
no, pls don't shorten your chimney,that is the true engine of all stoves; insulate it and clean it looks to me like you have a creosote buildup from cold fires, make sure you are giving the stove sufficient air for it to free burn, as choking it off combustion creates creosote due to cool combustion temperatures, this is probably the result of improper use by your tenant as u described
I had a really hard time hearing this video, my sound was all the way up. Thank you though for taking your time do do this.
I am sorry. I was probably using my phone since it takes videos better in low light and the microphone on that one is AWFUL.
I had that black oil problem with one of my batch box stoves. I used a barrel with 3pipes opened to radiate heat. But I got gallons of black oil. I believe that the glavinzed pipes mixed with hot gases causing the creation of oil. Don't get that effect in brick tower, same firebox
Great stuff, thanks for sharing! I feel compelled to point out that if someone had been sleeping in there over night, it would have been even warmer when you checked the temperature in the morning than it was. How much warmer is a great question, but warmer nonetheless.
Can you explain your comment? Are you saying that a person breathing in the space would make it warmer than just the stove and heat bench?
@@dirtpatcheaven Yes. Humans produce a few hundred BTU each. Throw twenty people in there and you wouldn't need the heater.
Please replace the battery in your smoke detector!
When the chimney water settles / evaporates, is the residue more like creosote or ash? And is it only while the bench is warming, or the whole time the fire's running through the bench?
A question for Darwin, has he thought of making a 3 stage valve instead of the 2 stage? If there was one, it could be connected to the upper where the pipe comes out of the bench near the wall instead of the lower going into the bench. You could then set it to send heat up the chimney (open to the bench but not going through) , or going through the bench, or closing the chimney to ward off cold air coming down into bench or stove when not burning.
If your outside pipe is insulated you should not have that black water dripping problem. But if your outside pipe is insulated and too big the chimney temp will be too cool due to cold air exchanging with the hot air down your outside chimney pipe. If your outside pipe is too big just reduce the size of the exit opening at the top of your chimney , that will stop cold the exchange of the air traveling down your outside chimney pipe and problem solved . Try it . I really like the stove build and great demo video .
The whole chimney is insulated with no air pockets. It is poured aircrete in between the chimney walls.
Water is from condensation you can insulate the chimney outside
That's a good thought but I think it is actually super insulated.
Julie is right that in that it may simply be too long a pipe for the amount of heat left in the exhaust after it completes the bench run. Perhaps if she can get it out faster there will be less condensate.
I think they briefly measured the exhaust at less than 80 degrees Fahrenheit in this chimney and that wasn't as cold a day as this day and night was. Don't hold me to that as I watched that video a long time ago. It was a pretty low temp though. The weeping hole outside isn't a bad idea as posted by @Jaakko Laurila
. I have no experience with this but my guess is that it would be worth looking into if it could be done without messing things up.
@@WilliamAudette yep - good point. You gotta have some heat loss to stop creosote in the chimney - but isn't the chimney needed for negative pressure also? OH that's what the rocket rise does - so the draft isn't an issue if you make the chimney smaller? I don't know.
Hi, neat stuff.
So how many Sq ft is that cabin?
And how cold was it outside average over this time period?
I just find it hard to believe that 3/4 of a log can give out enough BTU to heat that space for that long of time unless it's super insulated.
It's a mass flow. Btu added minus loss.
3/4 of a log doesn't have very many BTU's.
???
Hello from Spain Great job thanks 😃
You have blessed my life! Thank you for sharing with me. 🤗
I was trying to figure out which smoke and carbon monoxide alarm was chirping in my house. Couldn’t find it. Then you mentioned that it was yours. Lol.
Thank you for sharing. I love your family.
Years ago had wood stove in bus did same thing
Just subscribed. TY love what your doing in fact I'm trying to do the same thing, I mean RMH, animals and greenhouses.
Are their plans for specifics for this RMH build?
I'd like to see Darwin do some comparative experiments using Zeolite sand for thermal absorption. Adding water to it should help with heat transfer due to its properties & can add humidity to the air. Studies done by the Germans show that Zeolite has superior thermal heat retention & transfer properties.
more expensive, the really amazing thing about zeolite is not it's specific heat (simple heat storage capacity), but,rather, it's latent heat of adsorption. Similar to phase change latent heat, but not at the normal gas to liquid/liquid to solid temps. As it absorbs (desiccant) humidity... it gets very hot. then once it is "saturated" you then expend energy heating it to dry it out again for the next cycle. A use case: during a solar day use your panels energy to dry (recharge) the zeolite) then when you need to release the heat at night blow humid air through the zeolite mass then use that exothermically heated air. Some Bosch dishwashers do this on a small scale at the end of the cycle.
Water is the best simple and cheap way to store heat and move heat around. Have you ever experiment with water and rocket stove?
Wow - I never thought about paper clogging up the chimney duct. I have a baffle on my stove - so I don't think paper has been sucked up.
i'm surprised the constriction in the venturi didn't act as a baffle.
@@TheKlink "In a batchrocket there is an obstruction, smaller than anywhere in the system and in spite of that these stoves are burning extremely well.
Namely the detail that is known as the port, which is 70% of the chimney's cross section area.... The design is using the phenomenon of "pressure drop through an orifice" (Bernoulli's theorem) to add secondary air in order to create an afterburner function. Development of this system has been done using a Testo gas analyzer throughout.
Presumably, there could be some debate whether this port is an obstruction or rather a restriction. The difference between those terms is not christal clear to me, English isn't my first language.
regards, Peter"
In case of accidental fire, reach through the flames to access the fire extinguisher, Good Planning
all country people have to say i'm going to go ahead and.. do this...
instead of i'm going to do this....
Very strange 😳! And very neat 😃👍👍🇺🇸🇺🇸🇺🇸!
LOL! Good take on this project!
Julie, thank you for sharing and creating this content while Darwin is working to complete his content. I am sure it helps keep the excitement up around his work while he grinds through the less fun portions of the Portable Mass Heater Rocket Stove Documentation (LOL, I don't know that I have that name right!) at HoneyDoCarpenter. We already knew you were a great person, and an entertaining instructional UA-camr with a wonderful family, but you are also being a awesome friend. Thank you for sharing this content.
The scientist in me loves that you guys thought to place the Portable Stove into Tiny Home into the same bench the prior one was it. It'll be a great Control for the experiment. I also like the idea of trying out the pebbles/stones over the sand. I am a little unclear though what the advantage of one over the other is going to be. It'll be fun to hear your observations!
My guess is that the result will be more airflow will work it's way through the pebbles than the sand with might make for faster convection of radiant heat from the sides of the Shroud. I am not sure though which filler has a greater balancing affect on heating your space from the Shroud portion itself. I am guessing there will be a lower mass to density ratio which would create a higher propagation of near term heating. Saying it another way, I think you'll feel warmer sooner. =) Let us know if that happens. ;)
Thanks again, my family enjoys your channel and we too live in Idaho but in the SW.
Hey! Your comment made my day!
Great show...and I would love to see your smiling face a bit more Julie....I see Darwin every saturday....lolol
Hello.... Your co warner dont make an alarm... It says the batteries are low... You have to replace new batteries and then you have silence... I would go crazy with that...
An alarm would be sound like.... Whowhowhowhowho. . Not bic....... Bic....bic.... This is the control sound for low battery
Can you heat a house with this?
Any build plans please.
I don't think he has them done.
I miss Darwin! I miss Mrs. honeydew! I hope they are OK!
They are doing well. I miss them too.
So have yall gave up on a homestead in OK? That is a neat little stove.
Love the hat
How much of a "good" seal is the sand? It must leak somewhat as the sand will leak air.. ;)
Wow, awesome!
where is that "water" coming from?
Example ..... sand on the beach is hot,you can not stand on. The Sun clouds over and the sand is cool in a matter of minutes.
Maybe more like, the bench horizontal: vertical chimney ratio is poor. The more horizontal feet of pipe, the more vertical pipe there needs to be, to draw harder, to keep the air moving thru the bench, is what I’ve seen. If you shorten the vertical pipe, it might cause the airflow thru the bench to stall, or even reverse.
But, you know how windows get condensate?
Ours used to do that, especially when outside temps started changing, in spring, & again in summer. But, when we insulated the old single-pane aluminum windows, by installing a matching recycled window as a storm window, with 3” airspace between them, no more condensate.
That dripping goo looks like a condensate, from temp difference not been enough to either burn that residue, or, carry it up and out. And, the goo is maybe, denser than water, so lingers.
Had you tried insulating all that single wall pipe, to see if it solves the goo collecting & dripping there?
It is full insulated with aircrete.
..*fall, not summer!..
@@dirtpatcheaven Goodness! That is a mystery problem! Did you say, it started when the renter burned waste & plastic in the stove? Yet it continues? Could it be something else? (Could joke about ghostly ectoplasm here…😝)(that might require Other measures !)
Maybe coal would avoid the condensate issue?
So now you’re back in your big house and renting the cabin?
Does this guy make and sell these? Seems to me it would be a great business with light weight freight, so not expensive to ship. I want one of these, exactly the same size you have. . I already have a foamcreat machine. Paid a fortune for it 2 years ago. It's still in the box. Called a Little Dragon.
He is currently writing a book I mean he is making a PDF on everything needed to build one of these stoves you will get blueprints materials needed he's charging $250 for the PDF it is not done yet but he has sent out the first couple chapters to the people who have prepaid.
1000th like. 💓
Yea, must be transatlantic thing, I prefer to set a fire, go to sleep and know I can easily start it up in the morning using the coals
Wtf is that thing she was sitting on with the wheel spinning?
She is spinning wool from her sheep/lambs. Loosely the cycle is shear, clean, spin, bundle, sale/make clothing/items.
Aircrete doesn't seem like a very efficient thermal battery due to the lack of density and insulative quality of the air.
With my 31 years on a paid fire dept we went to many of these hippy fires. Listen to that woman coughing..
Very nice . :))
Ahhhh, I want one of these sooo bad!!! But I don't think I can make it. Maybe I can find someone I could pay to build it from the plans
I am in Missouri. I could build two instead of one. How close are you?
Tring tring ☝️
ESTO ya a sido probado y no funciona para calentar una casa. Si la caja de fuego no es grande no calentara lo suficiente la estufa. Si no usas ladrillo refractario con ladrillo comunes no podrás mantener el calor lo suficiente para que sea agradable y no mueran de frió los habitantes de la casa y recuerda que debes ir al bosque cortar esa leña, apilarla y debe estar seca para el invierno. Gastos de combustible para la sierra ,camioneta,tiempo libre, distancia del bosque, mas el gas de la soldador igual a gas propano o piso radiante evolución. Suerte
Great video. That is not gasification just fyi.
Too cool:)
Did Darwin's heater, heat your home before removal? what are you heating your home with now ?
@Yar Nunya your thoughts are appreciated, but the questions was and is for Julie or darwin
today it's been 3 weeks and you have not gotten an answer I am not Darwin I am not Julie but in a previous video that you julie did she said that her thousand square foot basement was heated in the seventies somewhere and the thousand square foot upstairs was in the 60s from that stove.
Please put a battery in your smoke detector.
Please just replace the battery in that smoke detector. I couldn't finish watching the video
That water thing is weird
😯👍👍👍👌
Nice video but you really need to invest in a mic can't hear what you're saying most of the time
Oh, the cinematography needs to improve. The shacking, back and forth. I am about to vomit !
IT WOULD HELP IF YOU KNEW HOW TO EXPLAIN THINGS..............
I am sure it would. I am in this video living off grid and filming while doing that can get tricky as far as how much time I had to go into things before my next chores comes up.
Where did the black water come from that was in the bowls?
The 22 dislikes were the power companies.
Crystal Davis ha ha ha well said. 😁
Or fire alarm!🥴