Dude was edgefinding with that tiny tip on round corners. I think you went above his skill level there.

That's very cool.. An improved version for better application

Dude you do realize he started the wood on fire somewhere else, then stuffed them in this unit.

@@MARS-GREENH0USE so? I am talking about the fire giving heat to the water.

Or fill it with steel wool.

Wow, thank you!

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If you would of used a copper coil 3/4 and used propane would of been a simple build /but you can also use wood fire

Glad you enjoyed it

only real engineers can do that, takes a5 year apprenticeship to learn, he's a great engineer.

Thank you very much!

Glad you enjoyed it.

Hey, thanks!

250 dollars plus 50 shipping, and every use you have to build a fire. Also it has to be in a location to allow the fire safely. When you can just buy an on demand water heater for 160 bucks. And put it under the sink or by the shower

Thank you 👍

Thank you very much 👍

It's the heater that creates the convection. Heat rises in the heat exchanger and rises to the top of the hot water unit as it cools in the unit it sinks to the bottom and repeats. Your method would require an electric pump. The way he has it plumbed is as old as hot water itself.

That’s something I asked my grandpa when he was working on his hot water tank. So I get where the intuition comes from :D His answer was that you WANT your water to be layered. Hot on top and cold in the bottom. That way you can extract hot water after a short time. Otherwise it would require the whole tank wich is constantly stirred by convection to heat up to your desired temperature which takes a lot more energy and time. Also the heat loss through the insulation of the tank is less when hot water is only at the top, because the hot water is touching less surface area until the whole tank is heated up. So the idea here is to heat the tank from top to bottom for better household usability rather than perfect mixing. Hope that makes sense :)

The guy is an extremely skilled draftsman and fabricator but the science is lacking. I came here to say the same thing about his 60C being just the water at the top. Also the lack of all around heat exchanger/surface area. @@no-expert it really depends what you want to do, if you want some hot water quickly, this setup will do that as your grandpa, but it won't heat the whole tank, at which point, why have such a big tank? Generally large tanks have 2 immersion heaters, the main one is in the bottom and ensures the whole tank reaches temperature, there's then a top "boost" heater for if you've run out or nearly run out of hot water, it'll quickly give you enough hot water for a shower etc. I'm going to assume the intention of this video was to show how quickly it could heat a whole tank and from there calculate it's power output, but he didn't do any of that sadly

@@trif55 science is there plain as day. Hot water rises in the heat exchanger and continues to the top of the tank. As it cools in the tank it sinks lower and lower and gets to go through the heat exchanger again. The bottom of the tank may only be 1 or 2 c lower than the top and the circulation will continue. The top of the heat exchanger has to be below the top of the tank. The science is heat rises cold sinks. It’s not hard to figure out. Every old farm house with a wood stove used this method of hot water for ever. The hot water unit is in the ceiling above the wood stove. The stove has a small water jacket in the fire wall. This is a very common method of hot water in the Aussie outback at shearer’s quarters and wool sheds where power supply is limited or non existent. We call these heaters a “donkey”. This method gives you an unlimited supply of hot water for a large family without the utilities cost. Haven’t you ever noticed that the cold mains water enters your water tank at the bottom and the hot water comes out the top and then to the tap.

@@stevenstart8728 yea I see what you mean, I know how hot water stratifies in an internally heated hot tank, that's cold inlet at the bottom and hot out the top obviously, but the "heating element" is always at the bottom, and I was basing my thoughts on how a liquid heating element, as in gas central heating system, with a storage tank, has the heat source at the bottom and I think the hot inlet for that is at the very bottom, but of course that's a pumped supply as well) I see now as long as the two bodies communicate freely and the stove/heater is the lowest point the cold water will flow down the lower pipe it and the hot exhausts into the top of the tank, basically flowing the opposite way to how I invisioned, which is why I thought the pipes would need to cross, so the hot water from the stove flows into the bottom of the tank, like central heating