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DaveBell
Moderator
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# Posted: 12 Jan 2018 08:16pm
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I found this video of a wood stove heating and circulating hot water by natural convection. I was always curious if this would work - no pumps needed. He put together a prototype to prove the concept. One could run insulated pipe to the rear of a cabin and heat a bedroom. I think if I did this I would use connectors so I could change parts such as twice as many coils around the stove pipe. One improvement I would make is an insulating cover around the coil and insulating all the hot side delivery pipe. Has anyone ever seen a complete engineering guide to wood stove hot water heating?
https://www.youtube.com/watch?v=QTP3EFSjPtM
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DaveBell
Moderator
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# Posted: 12 Jan 2018 08:21pm
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http://www.woodheat.org/heating-water-with-a-wood-stove.html
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FishHog
Member
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# Posted: 12 Jan 2018 09:41pm
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I've thought about it and love the idea, but the thought of an air lock and an overpressure explosion of hot steam has always made me think its not worth it. I'm sure with a proper setup and safety features it can be done safely but worth thinking through and putting in proper protection.
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Gary O
Member
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# Posted: 12 Jan 2018 11:45pm
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Seen that before
seems alotta whoop dee doo
we just put a pot on the stove
pour water
wait a few minutes
pour hot water
so far, so good
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darz5150
Member
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# Posted: 13 Jan 2018 12:25am
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Quoting: Gary O we just put a pot on the stove pour water wait a few minutes pour hot water
You described our first off grid, on demand water heater. Except ours was voice activated.
My wife would say, " Hey, we need some hot water!"
I would say, " Yes Dear!"
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Gary O
Member
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# Posted: 13 Jan 2018 02:07am
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Quoting: darz5150 I would say, " Yes Dear!"
I'm taking notes
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creeky
Member
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# Posted: 13 Jan 2018 03:46pm
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Note paper makes a great fire starter too. Probably why the gf rarely comes out to the camp. Hmmm.
I gather snow. Put it on the woodstove. And always have hot water ready. Great when you come in from the cold with frozen fingers.
I have looked yearningly at some of those woodstove water boilers. But the pot wins out. Easy to fill. Already own it.
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rockies
Member
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# Posted: 13 Jan 2018 06:45pm
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I think Dave is more interested in the concept of using the heated water to heat a room rather than making hot water for tea.
Usually the amount of heat from a hot water connection to a wood stove isn't sufficient to heat an entire room. A better bet would be using one of the new low emissions outdoor wood fired boilers. This will allow you to heat multiple buildings and also have separate piping for showers, sinks, cooking and cleaning.
http://biomassmagazine.com/articles/10746/warming-up-to-outdoor-wood-heaters
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Ontario lakeside
Member
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# Posted: 13 Jan 2018 10:18pm
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we also use the pot on stove method, added benefit is adding humidity to the cabin makes it feel warmer.
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Gary O
Member
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# Posted: 13 Jan 2018 10:31pm - Edited by: Gary O
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Quoting: rockies A better bet would be using one of the new low emissions outdoor wood fired boilers.
Ah yes
the gasifier
we already have wunna those
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snobdds
Member
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# Posted: 14 Jan 2018 01:12am
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Where's is it, I don't see anything?
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Bret
Member
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# Posted: 14 Jan 2018 07:14am
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What's the best kind of potty to put on the stove for tea?
Cast iron, stainless etc.
Bret
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Kamn
Member
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# Posted: 14 Jan 2018 09:34am
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Aluminum
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Jebediah
Member
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# Posted: 20 Jan 2018 05:11pm
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I have a Waterford cook stove that has the water box built in and the piping runs upstairs to the hot water tank. There is also 2 solar heater panels outside ground mounted each is 4x8 which also feeds into a preheater tank. I haven't used the system yet as everything is written in German and I'm changing the location of the wood stove. I did read that its not a good idea to use the stove if there's no water in the tank inside the fire box as a very hot fire can cause damage to the welds....
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silverwaterlady
Member
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# Posted: 20 Jan 2018 06:00pm
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Bret:
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Bret
Member
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# Posted: 21 Jan 2018 02:29pm
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That's a great idea. Thanks for sharing SWL
Bret
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silverwaterlady
Member
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# Posted: 21 Jan 2018 03:52pm
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YW. 
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