Marion Kaye wrote:I've seen quite a lot of stuff with complicated gizmos and lots of tubing, seemingly intended to get near boiling water out of a tap, and a lot of them seem to be doomed to failure as they are trying to use the hottest part of the fire, ignoring the fact that the presence of non pressurised water in that region is going to take so much heat out of the combustion that it's going to seriously reduce efficiency.
But I don't want boiling water. Just a warm bath.
Steve Harvey wrote:Those are cool designs, I like the more realistic one. Like the picture with the tub on the burn tunnel I would incorporate the tub as part of the thermal mass, and surround it in cob.
Julia Winter wrote:Satamax wants to have the tub on top of the bell, since that's the hottest part of the system.
Julia Winter wrote:Solar hot water is awesome. We had a system in Wisconsin, it filled all our needs at least 5 months of the year, and helped year round.
Something I'm thinking about is a cob hot tub.
Sue Rine wrote:Is a rmh for an outdoor bath perhaps overkill? We simply dug a hole in the ground on a small bank. The bsath fitted snugly in the hole. From the lower side of the bank we then dug under the middle of the bath, a pit to build a fire in and an escape route for the smoke at the back of the bath. I suppose you could say that that formed a more or less j shaped firebox with the bath as the top surface of the firebox. It heats the water to bath temperature pretty quickly. It's best to let the fire die down to embers before getting in the bath and essential to sit on a towel! It's lovely to have a bath that doesn't cool down while you're soaking. The embers are enough to keep the water at a good temperature.
chad Christopher wrote:I've imagined a cast tub, set and sealed with an air chamber around it. Kind of like the barrel around a stack in a rmh. Exhaust could pass around the underside of the tub and heat the water inside. A damper could direct the flow of exhaust from its normal mass storage, into the tub wall air - exhaust chamber. With a braised drain, there's no reason you couldn't drain it like a normal tub. The water could be preheated via another system. I have also wondered what a system would look like, if you passed water through a container of heated stone or sand, that drained into a tub.
Pia Jensen wrote:hmmm... there's a lot of black clay in an area I'm working, have to test that clay for heat stability (was considering clay oven, but not sure my clay is sufficient) and now this thread sparks my imagination in making a black clay bath ... somehow... I don't know what it entails in this moment... my intention is to move the black clay that blocks water from flowing down on this lot so, there will be a fair amount of black clay to be used somehow.
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September-October Homestead Skills Jamboree 2019https://permies.com/wiki/118704/permaculture-projects/September-October-Homestead-Skills-Jamboree