I was introduced to the conecpt of the RMH about a month ago, love it, and know that I'm going to build one. Somehow.
Details: I'm in in a multifamily rental, can't make any mods to the house, have access to the basement, 2 floors of living space, and a walk up attic. There is a masonry fireplace, with a hearth that's supported by concrete block all the way to a footing in the basement (that's right, they have an 8 ft tall wall of CMU bumped out of the wall under the hearth, I have no idea what kind of load it will support, but it's go to be better than regular joists).
I'm going to work on an RMH in a detached shed until I deem it ready to trial in the house.
I just purchased and read Ianto's book, it's fantastic. I'll probably pick up the 4 dvd set next.
A few questions to get me started (I'm just getting started, so sorry if these questions have been asked before, I did search around before posting):
Whatever I come up with needs to be removable and not too heavy, so maybe a small version of Paul's pebble filled mass?
Satamax Antone wrote:Michael, as i often say.
If you don't want the weight, look into big metal bells. They can be of any size and shape, and don't weight much.
My workshop heater is a batch rocket in a 500L water tank.
You can also look at Peterberg stacked barrels one. "near pish easy to make"
Horizontal batch rocket made out of insulating firebricks don't weight much. You can do most of the core dry stacked. And bell wise they can cope with 60sqf 6M² of internal surface area (isa) for a six incher. You can find some home heating fuel or tractor fuel tanks which instead of round can be square/rectangular, and a 1000l, common in europe are usualy quite near the required isa. Square type can have bricks, concrete blocks, cobble stones, pavers or whatnot, dry stacked on top and on the sides for a little mass. I advise to butt the back of the tank against a massonry wall. And for less weight also for quick heat, leave the front bare.
About bells http://www.stove.ru/index.php?lng=1&rs=16
One absolute must read about horizontal rockets http://donkey32.proboards.com/thread/511/adventures-horizontal-feed
Some of my latest drawings.
One thread where you can see Peter van den Berg workshop heater, and a drawing i did for a guy. http://donkey32.proboards.com/thread/951/shop-rocket-heater
my workshop heater. http://donkey32.proboards.com/thread/849/green-machine-inch-tube-help
Nearly all of this can be done with a J tube too. Tho, they're too finicky for my taste.
If you have a hearth, there's zilion solution where you don't need much more mass.