Oliver Gruesser

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since Jan 21, 2016
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hugelkultur tiny house
Mittagong, NSW, Australia
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Recent posts by Oliver Gruesser

and sorry yes i was meaning just to post on this thread.
2 years ago
Hi Glen
So you don't think the insulated space with the coil in my sketch isn't grunty enough to heat the hot water?
2 years ago
Hi
What about this thought (attached image)
It is thermosiphoning, mains cold water feeds into header tank which also functions for relief of pressure and expansion.

The copper coil should be encased with very good insulation, like 150mm cellulose, where the box can be made out of sheet metal or 2 different sized barrels upside down to achieve a cavity to fill insulation.
So the copper coil has lots of surface area within a confined well insulated space to exchange the heat to water. Looks alright? Shall i have a go?

So i have regarded the expansion and pressure regulation with the header tank (not my idea, this is common old methods) that also maintains cold water delivery at all times with the float from mains pressure.

So no explosion danger!

Regarding taking energy away from the required operational heat level of the rocket,
i think by absorbing energy just from the top of barrel, it might work.
I don't think wrapping the whole barrel with a "wet jacket" will work. As you mentioned in this thread before, the rocket will struggle maintaining its temperature to be efficient.

[On conventional "slow combustion heaters" they put "wet backs" inside the firebox. Yes mad. Then the more cluey ones install another loop on top of the loop between wetback and header tank with a temp sensor and switch to determine circulation through wetback ONLY starts at a set min temperature, i think 50 celsius. Therefore the fire is not constantly hit with colder water and thus less creosote is produced.
Of course slow combustion heaters are a big compromise anyhow.]



Let me know if someone can point me out something...
Cheers
Oli
2 years ago
Hi
I want to put out a concept for Hot Water heating adding to an RMH. Therefore not compromising having a whole other unit just for Hot Water heating, if that makes sense.
It is thermosiphoning, mains cold water goes into header tank which also functions for relief of pressure and expansion.
The copper coil should be encased with very good insulation, like 150mm cellulose, where the box can be made out of sheet metal or 2 different sized barrels upside down to achieve a cavity to fill insulation.
So the copper coil has lots of surface area within a confined well insulated space to exchange the heat to water. Looks alright? Shall i have a go?
Let me know if you can point me out something...
Cheers
Oli
2 years ago
Hi there, here i built one of the rocketstove.com plan. What differs to the plan is the combustion chamber, i changed it to a j- tube from a l- tube and more added refract. 50mm fire tiles.
I wanted one mobile (tractor with pallet attachment) but still be able to bake for small cottage industry (30 to 50 loafs a week).
One big factor was not to have to preheat a mass for 6 hours or so. This one can be maintained at 220-230 Degree Celsius with heat up phase between 1.5- 2.5 hours depending what desired temp and season. So it is very good for Bread but not ideal for Pizza, which is fine for us. I used glass wool for insulation, next time i would use refractory i think. I could add some, but it works for the situation now. Very pleasing seeing bread coming out after quit a bit of work and about 800 AUD. I knew it won't be too cheap but it will stick around for a while.
3 years ago
Hi there, i am currently very interested to find a solution regarding bypassing the mass. I would like to hook on to DANNY MARKLEYS question, what experiences have been made at what exact point the bypass been installed.
I am not sure if i have understood it right, does the 8 inch Cabin RMH pdf from Wisners include details of bypass points, perhaps in the 1/2 Barrel manifold??
3 years ago