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Small Cabin Forum / Off-Grid Living / Wood stove hot water heat
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DaveBell
Member
# Posted: 12 Jan 2018 20:16
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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

DaveBell
Member
# Posted: 12 Jan 2018 20:21
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http://www.woodheat.org/heating-water-with-a-wood-stove.html

FishHog
Member
# Posted: 12 Jan 2018 21:41
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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.

Gary O
Member
# Posted: 12 Jan 2018 23:45
Reply 


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

darz5150
Member
# Posted: 13 Jan 2018 00:25
Reply 


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!"

Gary O
Member
# Posted: 13 Jan 2018 02:07
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Quoting: darz5150
I would say, " Yes Dear!"

I'm taking notes

creeky
Member
# Posted: 13 Jan 2018 15:46
Reply 


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.

rockies
Member
# Posted: 13 Jan 2018 18:45
Reply 


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

Ontario lakeside
Member
# Posted: 13 Jan 2018 22:18
Reply 


we also use the pot on stove method, added benefit is adding humidity to the cabin makes it feel warmer.

Gary O
Member
# Posted: 13 Jan 2018 22:31 - Edited by: Gary O
Reply 


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


snobdds
Member
# Posted: 14 Jan 2018 01:12
Reply 


Where's is it, I don't see anything?

Bret
Member
# Posted: 14 Jan 2018 07:14
Reply 


What's the best kind of potty to put on the stove for tea?
Cast iron, stainless etc.
Bret

Kamn
Member
# Posted: 14 Jan 2018 09:34
Reply 


Aluminum

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