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Small Cabin Forum / Useful Links and Resources / Convert any Wood Stove to a Water Heater
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rockies
Member
# Posted: 17 Feb 2017 20:50
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http://www.hilkoil.com/

Found this site.

darz5150
Member
# Posted: 17 Feb 2017 21:04 - Edited by: darz5150
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https://www.youtube.com/watch?v=5IRLVCJ1olA
I've seen this done around a single wall stove pipe.

MtnDon
Member
# Posted: 17 Feb 2017 21:10
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Just remember with all these sort of ideas... you need to keep the water moving fast enough to avoid formation of steam.

bldginsp
Member
# Posted: 17 Feb 2017 21:38
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Any installation of this sort should have a temperature/pressure relief valve incorporated into the plumbing. Lead the discharge from this outside the house, or at least a good distance from the stove. If the valve does go off, it will be spewing so much steam and hot water that you won't be able to approach the stove to shut things off if the discharge is close by.

darz5150
Member
# Posted: 17 Feb 2017 22:04
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The type I have seen wasn't pressurized. The guy had a 5 gallon metal container on a heavy duty shelf by the stove pipe. He had a spigot on the container. Worked just like a percolator coffee pot. It sucked water off the bottom and burped it out the top.

darz5150
Member
# Posted: 17 Feb 2017 22:38
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This is another type. I have this one for the wood stove in my tool shed. It clamps on the stove pipe. It holds 2 quarts.
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51Qrt3GbDeL._SL1000_.jpg


hijlehhw
Member
# Posted: 21 Feb 2017 07:29
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As someone who holds a Chief boiler license, always makes me nervous when people talk about doing things like this. I am all for being resourceful and diy, but it can be very dangerous in this instance. Do some serious research on how to appropriately set something like this up, might even take a look at boiler code basics to get an idea of the risks.

In addition to having a PRV/PSV (pressure relief valve), this should be checked regularly (including those on your hot water heater), there is also an additional challenges of water chemistry, if you have hard water etc. it will build up deposits in the coil or in your pot/container etc at best reducing flow and at worst, causing failure.

Keep in mind that water expands in volume 1700x when flashing to steam and that is the power you are potentially dealing with when designing these types of systems. I think it can be a great idea if done right, I've just seen many instances where people didn't have a clue what they were doing and it made the hair on the back of my neck stand up, huge potentially for explosion.

bldginsp
Member
# Posted: 21 Feb 2017 08:55
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There are numerous ways that an 'open' system can become a 'closed' system, then the pressure builds up....

Take Old Faithful, for example. It's just an open hole in the ground, but the water coming in from above the bottom of the hole closes it off, at least, until the pressure from below builds up to a certain point...you could say that it has its own pressure release valve...

As soon as you introduce piping to a boiler you create the potential for a similar situation. Pressure release valves are cheap.

Cowracer
Member
# Posted: 21 Feb 2017 10:35
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Quoting: rockies
http://www.hilkoil.com/Found this site.



Nice idea, but Good Lord, someone tell them to hire a professional web designer. What is this? 1992 on GeoCities?

Tim

rockies
Member
# Posted: 21 Feb 2017 22:10
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Darz5150: What is the make and model of your water heater?

darz5150
Member
# Posted: 21 Feb 2017 22:21
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@rockies
It came with the stove. Got it on amazon. Just search TMS military tent stove. They are about $90 bucks now.

rockies
Member
# Posted: 21 Feb 2017 23:26
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http://www.ebay.com/itm/Stainless-Steel-Outdoor-Water-Kettle-for-Wood-Military-Campin g-Stove-Flue-Pipe-/400692352328

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