It would’ve been way better if you just made it like this instead of that. Next time try changing that piece to this piece and it’ll be much better, trust me

@PatrickRemington

22 күн бұрын

😂😂😂 right! I knew I should have changed that piece.

@David14A

21 күн бұрын

@@PatrickRemington The trust me part was absolutely necessary lol glad you realize your mistakes now though ✅😂😂

@rcjabroniyup4959

19 күн бұрын

Glad someone said it ! Haha

The round one used less wood and didn’t use a pump. One could argue that it was most efficient.

@ManByTechnicality

26 күн бұрын

As with most things in engineering, usually maximizing efficiency in one variable decreases efficiency in another. In this case, fuel efficiency vs. time efficiency.

@B30pt87

25 күн бұрын

I liked the round one best too. (Maybe I'm biased though because I'm better at welding round tube, and I'm planning on making a RMH.)

@gerardmoangodelrio7334

21 күн бұрын

thermally speaking,if the tube surface used where to be the same, the square one would be better because the tube is directly exposed to the heat making it easier for the heat to exchange between the water and the heated air.Whilst the round one, only part of the tube surface is in contact with the metal so the heat has to transfer from the heated air to the metal,conduct the heat through the metal and finally jump from te metal to the copper. Trapping the hot air around the tube with the insultaing tape helps on the efciency but the square one is defintely the winner here.

@gerardmoangodelrio7334

21 күн бұрын

also the square stove has a way bigger gap for the air to flow in,making it more eficient in burning fuel. Thats why it runs so fast out of wood. Although we could argue if that's beneficial for the exchange of heat. Maybe limiting the opening on the air gap to slow down the combustion would make it better.

@jonnytoast

2 күн бұрын

That's what I said. Pump is circulating and mixing the water in the bucket. Goes so far as weighing the wood to be equal then uses a pump in one and not the other.

+1 for weighing the wood for the test.

I was a pipe welder and an insulator. Wrap that in a removable blanket. It will be way more efficient

@jimdarhower4945

Ай бұрын

Did you weld those legs on…or was that Stevie Wonder? 🤔😬

@Wigington24

Ай бұрын

@@jimdarhower4945 no it was your mama Helen Keller

@CedarGroveOrganicFarm

Ай бұрын

I came here to say the same thing re: insulating blanket

@Wigington24

Ай бұрын

@@CedarGroveOrganicFarm 🌱🌞

@jimdarhower4945

29 күн бұрын

@ Wigington24 - ohhhh snap you got my ass good!!! You ever hear a good Hellen Keller joke?

In boilers, there is the phrase "Hot to hot, cold to cold". This refers to the optimum flow direction of water relative to combustion gasses. The coldest water should enter the stack and the hot water (or steam) should be withdrawn from a place alongside the fire. This makes sense, we can measure boiler effectiveness by exhaust gas temperature -- the cooler the exhaust, the more efficient the boiler. Obviously, cold water entering the stack will remove more heat from the gases than hot water will. The technical term is "counterflow circulation".

@PatrickRemington

Ай бұрын

Soo you’re saying I’m doing it right or no?

@53kenner

29 күн бұрын

If you are putting cold water in at the spot furthest from the fire, and taking hot water out at the spot closest to the fire, then you are doing it right.

@steverturnsk6190

29 күн бұрын

Yes you are correct. I am a retired steamship marine engineer. For the counter flows, you must have forced circulation. If you wish to have thermo-siphon with no pump, then the water needs to rise naturally. Simple, no electrical mechanical devices to depend upon. I made a monster one just like this out of a 4 foot tall oxygen cylinder, wrapped the coils around the bottle and then wrapped the cylinder/coil assembly in ceramic wool, then built an outside encasement with cement board. I used 50 feet of 3/4" copper tubing. It works great, although one must feed the wood (four 2" diameter pieces 18" long) every 40 minutes or so and it is tough to go outside in the rain or snow numerous times a night to keep it going. The water enters the recycled electric water heater (on 5 ft tall stilts) around 180 degrees F. All done using thermo-siphon.

@adandredestefano

28 күн бұрын

​@@steverturnsk6190have you considered using a sleeve of sand to act as a thermal battery around your copper coils? Once you get that heat into the sand it keeps the heat quiet well.

@michaelnorman5028

21 күн бұрын

​@@steverturnsk6190could simply extend the hopper and add chips or something that will progressively burn down with the long sticks

Patrick just nonchalantly called us all weak 😂

@Brianbri-nq3cc

Ай бұрын

RIGHT!😂😂😂💥

@urgaynknowit

Ай бұрын

Deadass

@dallasarnold8615

Ай бұрын

And then he says how heavy the tubing is filled with sand. Where did the strength go ?

@spencerfranklin4780

Ай бұрын

“ I am very strong not sure if you’ll be able to do this” as if he’s talking to a bunch of women😂😂😂😂

@mattedwards4533

28 күн бұрын

In my case calling me weak he is right!

From the Pacific Northwest, Can't wait to have Hot water to take a shower while camping this year. My family thanks you, without any idea how hot H2O came to camp this summer!!! lol

"He's strong... and blows good" You got the job

Nice builds!! I probably would have used a pump on both to get a fair comparison. great for a small hot tub or clawfoot bathtub with a view!

One thing I noticed after building several wood burning water heater is when you put the copper coil inside the stove it will get charred on the outside skin of the coil in turn insulating the water from the heat enough to be frustrating as the water can escape the heat enough to stay Luke warm! When using propane burner inside with inside coil the results were much better as it doesn't accumulate the black crust when using wood!

If you add a plain loose metal sheet into the flue, it'll help with efficiency. The metal sheet/plate heats up, and radiates the energy from the gasses in the middle of the flow onto the the coils. Might not be a ton, but I've heard that gas water heaters do that to get a few more percent efficiency. Also, if you're using a pump, you might do cross-flow on the coils. Cold water into the top and warm water out of the bottom. The thermal gradient is more efficient that way. Kind of interesting - the same principle is used in some fish gills - the unoxygenated blood is fed into the last gills first, where the water has already had some of the oxygen pulled out. The result is that the fish can "breathe" a lot more efficiently and even to lower concentrations of oxygen where they might not survive otherwise.

Some pipe wrap on the outlet (hot) hose would help retain some of that heat. Those open hoses are acting like radiators. In fact, leave enough copper to run all the way to the storage tank, and wrap that. Honestly, I'm waiting for the video where you get the water hot enough the hose melts. Great videos man, thank you!

I'm so glad to find this video to test which is more efficient. I knew the square one with a built-in coil inside would heat up faster. That was my first initial guess before you started the stoves. I would pass it on to my friends who want to heat up the outdoor tub. This would do it! Thanks!

@bobert405

Ай бұрын

The square one is definitely more efficient but not just because of the direct heat also because smaller diameter copper pipe

@mattnbin

Ай бұрын

I am sure the pump on that one would make a big difference in heat up time.

Excellent workmanship , simplicity of design, and 100% on functionality in off-the-grid living.

"I am very strong" lol calm down Pat. Good build.

I would DEFINITELY have shoved the hose from my air compressor into the pipe to clear the sand XD That sounds like fun lol. Such a cool project!

If you ran the test again, could you run the pump with the new stove as I think that it probably reduced the time needed to heat the water by a fair emount. I'd be really interested in the results 🤔 Thanks for another cool project 😊👍👍👍👍

Awesome build, here are some suggestions for a version 3.0: - smaller copper pipe diameter, but a way longer pipe, may help with faster heating, since smaller volume of water inside per surface area of coil touching the stove wall. Ideally the copper would be wound all the way up the chimney, to maximize surface contact and therefore heat exchange. In a theoretical perfectly efficient system, this would mean that the stove exhaust gases and the water exiting the coil would be at the same temperature. - Some kind of heat transfer substance (similar to thermal paste between computer chips and heat sinks) between the copper coil and the stove wall would be great, since the contact of the round tubing on the flat wall is basically minimized by the geometry of the round tube (only tangentially touching). Building an additional outer wall around the copper tubing and filling it up with fine sand (or maybe even filling it with lead?) should work. This will increase warm-up time for the stove itself, because it's just more mass to heat up, but should increase overall efficiency. - square copper tubing may also work, since it would increase contact surface with the stove wall.

I’ve seen a number of rocket stoves come out in the last few years and my biggest thought has been application. Appreciate the idea.

😮 Wow ! That's a genius water heater, your very good men, professional very creative ! Congratulations 💥

Kudos to you sir, for working so well with that 'tricky to work', but neat looking round tubing. Bravo! 🔥🚀

Great job, love the round tubing variation on this concept!

I like that you experiment and improve designs

"I'm really strong" Internet arm wrestle challenge if i ever heard one. 😅 Awesome video, I'll be using this for my outdoor shower! Cheers!

Dude just went "i am very strong" lmao

@PatrickRemington

Ай бұрын

I got jokes..

Great video! Yes the first one will perform faster with that pump since you're creating a recirculating pump essentially so less energy to heat up the water because the warm water is moving more through out the system faster as utilizing less energy.

@AmericanTank08

Ай бұрын

Also not to mention the pipe size diameter does help with not needing as much heat time as well as the length of the pipe. I feel this experiment would be great in a fixtures class for plumbing trade schools

You have convinced me to buy a welder.

@PatrickRemington

Ай бұрын

Yes!!

Nice build!

This looks cool!

Nice work!

Great idea to have a water heater.

Great little project!! TYVM

"He saw the Foam, and was in his zone" that one shoe guy

great idea

Awesome Build!

Built a pool heater like this using one of my older forges.

Fascinating work... keep making the content for us to enjoy...

Nice build.

This is a great project Pat. Really clever. I live off grid in a tent here in the outer suburbs of Melbourne Australia and i dont have any heating apart from a small fire and a butane gas stove to cook on so showers aint happening. I just either use bottled water and shower gel and chux wipes to lather up or make a solution of household disinfectant and water then use a spray bottle and paper to wash myself down. Definitely the shower gel is a better option rather than poisonous disinfectant on my body but your rocket stove is awesome and very clever. My other problem is carrying bittled water is not easy. Ive done myself injury and had a mild heart attack in February 2024 on an extremely hot day. It was around 38- 39 degrees Celsius so thats above 100 degrees fahrenheit. Your stove is awesome, you got my subscription 👍👌

Great stuff....thanks!

Prettiest rocket stove, them there are fighting words 👍

Love it! 👍🏼

Good stuff.

07:50 I like the pop sound of the welder in these time-lapses. Kind of soothing. 🤙🏽

Awesome stove I will be making one!

Very cool, I would build one of these for sure...

Been waiting for this one

Great work

Cool stuff. If you mess with this a lot, you can buy a combustion analyzer and make an intake that you can meter to get the burn as efficient as possible, maybe some baffles in the chimney or a cap, to slow the draft and use a small pump like you did on the square stove. I would bet you could get the ice water to 120 In half the time! Thanks for the content!

Epic video!!

Thats amazing!

Love to see this kind of ingenuity, I use this same principle in refrigerant recovery. A 1/2” copper coil covered w/3/4” clear tubing submerged into a 5 gallon bucket of water, 3/4” tube attached to a submersible pump (pump circulates water through clear tubing over copper tubing) the other end near the top of bucket. Copper line used as refrigerant in/out. For faster recovery fill bucket w/ice. Refrigerant likes to migrate to the coldest area, by circulating cold water over the copper tubing, thus rejecting heat to the ice water you have created a condenser, and can quickly move refrigerant.

Hi from Croatia! Good job!

The first stove has roughly twice the air intake. And an electric pump. It runs lean and has electric assistance. It's awesome. I like the other slow burning stove that doesn't need any outside help. I see you opened the bottom vent, and it worked better. I want to see a rematch.

Ferrule not feral my friend. It's a good idea for you to be doing this and to have made this video because if the grid collapses we have to have clean water but having hot water to wash things and to bathe with it's almost a necessity in itself

sed the same exhaust tape on my still's coils! Love this Idea!

Awesome build

@PatrickRemington

Ай бұрын

Thank you!

subscribing and adding your project to my apocalypse survival skills.

keep those pipes in place to tack 'em up with some good magnets.

Very interesting!

Great video, really enjoy your work!

@PatrickRemington

Ай бұрын

Thank you!

wow, first american to say soldering instead of the generic sawdering, worthy of me subscribing

@PatrickRemington

26 күн бұрын

We I’m glad you weren’t here when i kept saying aluminum excrusion the entire video instead of extrusion. Got roasted for that one 😂

@paulhare662

24 күн бұрын

@@PatrickRemington aluMINIum

i love big magnets for welding pipe on a table

Thx

Great video. Going to watch the other square tube one now.

@PatrickRemington

Ай бұрын

Thank you! I hope you enjoy it!

Love it

thats a nice stove. you should also flip it around and test the round one with the pump to see the actual increase in speed.

Damn great job!🧐👍👍👍👍👍👍👍👍

I’m sure there are already tons of comments but if your pumping one through the heat exchanger and the other relying on thermal flow , the pumped one will work way better and because it’s using absorbing more heat faster you’ll have to feed it more. Cool video though.

Thanks for sharing

Ok... You got my attention. ... 😁 That's a brilliant simple design that looks great. What more could ya ask for?

That's the smartest looking design I've seen extent!!!! Outstanding young🌱 man 👏!!!!! Mine heat's a 150 gallon hot 🥵 tub in an hour maybe 70 minutes except a little taller and it's a six inch diameter version but one could easily say the look like twins!!!! No pump nessesary water 💧💦 in at the bottom and the heat rise's it up in the top!!!!

Very. Cool😊😊😊

Now try in addition to put the water in a big pot on top of the stove.

Nice! You always make the best stuff. By the way; stable ice water that is completely mixed and the ice is only slowly melting, the water is at 32°F (0°C) with only adjustments for how far your pressure altitude is away from standard sea level pressure of 29.92" Hg. Any remaining ice that remains in the bucket is negative thermal mass that has to be heated. You should have added ice to each bucket, let it stabilize and then remove all the ice, and had the same volume/weight of water, and it would have been at the same temperature and thermal mass for adding heat energy. Good test otherwise.

@PatrickRemington

Ай бұрын

Oh man.. I don’t think we are on the same level 😂😂 but I’m willing to learn! Thanks for the info!

LOL ...re inventing the WHEEL ... good job

@PatrickRemington

24 күн бұрын

More like seeing what I can learn from building the wheel myself

Pump works best because heat conduction is best when temperature difference is greatest and pump ensures this difference by replacing hot with cold quickly. Nice build.

Cool 😎 video

nice work

@PatrickRemington

Ай бұрын

Thank you!

I can confirm. This is working. Been messing around with it around 4 months ago. Managed to warm up the water by 60C.

Nicelydone

Good show

@PatrickRemington

27 күн бұрын

Thanks man, I appreciate it

thanks good video

It would be interesting to try this to do auto feed with wood pellets. It would also be interesting to see where the stall point is.

you got a steampunk-esque rocket stove/water heater. I like it

Next step is definitely a round tube, same size, with internal copper piping. if it's a 4" pipe, I would wrap your tubing around a 2.5" pipe to form it, suspend it in the center of the vent chamber, then weld the pipe sections together. But I do agree with the tripod build. With 3 legs, you can't have one leg off the ground.

Seriously I'd weld the two smaller pieces first and grind, but nice first welds there. I'd prefer slow and steady with less fuel used overall so round would be the go for me, maybe coils inside like the square since they'd coil up nice and snuggly inside. You'd have to cut a slot near the base to pull up the pipe unless you were a magician with tools to grab the end out of a hole, but a slot would suffice, it may even be a good small permanent vent if you didn't weld back in a piece. Great video, I also like old huge gas cylinders.... ;)

Its been around for years had one as a bath and shower heater in the 50s and it had been in the house from the 20s

I have always wondered why people put the inlet and outlet of the bucket of a thermosiphon at different levels. You could put both at the bottom or send the hot water into the bottom of the bucket. As long as the hot water coming out of the rocket stove continues upwards it will cycle. The pressure in the whole system is the same as it acts as one column of water.

It was good point to add 3 legs not 4 ,its always more stable on the ground specially when ground is not flat

Love the design, i would love to see a very portable version of this. Perhaps in the future I will experiment with a back packing collapsible rocket stove with the coil inside. But if you beat me too it I would thoroughly enjoy that video. Cool work!

@PatrickRemington

Ай бұрын

This is about as portable as it's getting honestly. Collapsible and copper coils don't really go together.

Nice stove ... I'd like to build one of those for a pool heater. BTW ... Nice bucket ... My aunt went to M.S.U. to get her Bachelor's and Master's in Agriculture.

Nice

Hi Patrick, My design uses the coil as the lower part of chimney. Just solder the gaps, or put it inside the tube.

Cool !!!

Áwesome stoves

A couple of observations I'd like to offer: The square tubing one has a shorter flue than the cylinder one, so it wasn't an exact comparison. Also, you would have a more efficient burn if you had a longer flue, and the copper on the upper part of the flue. I think the reason that you were getting an inefficient burn (as seen from the smoke) was because the temperature of the burn chamber was being cooled down with water. You could also try introducing secondary air, but that's a separate experiment

@astrobreaux

Ай бұрын

too many coils in too tight of a space, cools off the chimney and creates and erratic smokey burn. the chimney needs to be about 3 times what it is to function. anyone that took physics should remember that heating water doesn't happen fast and a rocket stove is just a fuel hungry, wasteful excuse for a heat source. unless you're trying to get rid of a lot of wood fast. it only takes three complete wraps spiraling up to allow smoke to spiral past any cold spot created and allow the heated water to rise as fast as possible. the other issue with too many coils is the excessive resistance created internal can split the tubing, steam burning anyone near it.

@ogi22

Ай бұрын

That's exactly what I thought. First thing - round flutes. Good burn and draft requires a round chinmey to minimise vortexes. Second thing - temperature in the burn chamber must be high. Really high to burn completly. That's why a lot of such constructions have that part insulated. Third thing - "afterburner" - additional air intake where gasses are burnt. Especially heated air, where air ducts take heat from the flute and make the burn much more efficient. And then, you can start draining energy from burned gasses. Basically you put coils where there is no flame.

@jeffcameron7853

Ай бұрын

@@astrobreaux I am needing to heat water the most efficient way, so you're saying only three wraps of the water coil?

Put a steel wrap around the copper pipe. Use hinge and wing nuts.

Can also wrap the copper tubing around a section of pipe a hair smaller than the pipe in your finished rocket stove. The copper will then have a tighter fit around your permanent stove.

Firstly, props for building these. Do they smoke? I wonder if you slid the copper coil up the chimney some you might actually get more energy out. Could be that cooling the combustion chamber would reduce combustion efficiency. I'd be interested if that changes the power output, up or down.