bob mctaggart

Al! Thank you sir, for the in depth answer. I've added a few pictures for clarity.

I now wish I'd done more research on the heat riser before building, as mine is cemented together and proved impossible to disassemble... Oh well, I suppose I'll have to build another.

The yurt is about one hour outside of Vancouver, BC.

In terms of having a 6" ID and 12" OD = 3" clay and verm gap on the heat riser, this sounds good to me, my question is, where might I find caps for the top and bottom? At least in my location, those kinds of transitions are both hard to find and excessively expensive. My very simple system cost over $500, and that was after shopping around at 4 different stores. The 6" to 8" cap was the only one they carried, and those alone cost me over $100. The local stores don't even carry 12" C vent, only 6" and 8". Your advice for sourcing materials is appreciated.

I am also concerned that the system won't have enough length to sufficiently dissipate the heat before exiting the yurt; hopefully this won't be the case, as insulated pipe is $125 per 18" locally.

Hey permies,

I'm moving into a 20' yurt, and currently building a rocket stove / RMH, and I have two main questions: is it overkill, and how do I make it safe?

A bit about the heater: 6" C vent pipe throughout, 18" riser inside a 55gal steel drum, 8" pipe on the riser and the gap is filled with compressed vermiculite (no clay).

From the barrel the pipe goes into a 4' long bench filled with (from the ground up) cement board, vermiculite, and river stones, loops back around, then goes up an 8' chimney and exits the yurt through the roof.

Under the barrel I'm planning on putting cement board and bricks, and behind it between the barrel and the lattice, more cement board.

I'm hesitant to encase the barrel in cob for a two reasons: clay is inaccessible (the yurt is way up a mountain, making clay impractical to transport, and no clay is readily available on site), and I may need to take the yurt down at some point in the next few years for one reason or another, and the cob would make that impractical.

Is the heater likely to be safe in the configuration I've described?

The second question I have is, maybe this is overkill for heating a 314sqft space? The walls are insulated with aerofoil, and the floor is insulated with 3" foam board enclosed in plastic.

Your expertise and experience are appreciated, thanks.

Thanks John, so am I correct in my understanding that 66 ft. of head would produce a reasonable amount of pressure?

Hey permies,

I have a yurt off the grid on a mountain, and I'm wondering what the formula is for calculating psi based on drop.

In other words, how far up the mountain do I need to put my rainwater collector to get normal tap pressure in my yurt?

Thanks!