tommy south, hold yer hat. I did answer your questions. just not the way you wanted. Im 40, if it matters, and I have torn apart no less than a dozen mobile homes, and repaired various portions of several others besides. Have one that just went to salvage and another on the way in the
yard.
You can be offended, I wont tell ya what to do. heres my thoughts that
led to the short answer about chroming turds.
1) build and use a RMH within my home? (the home is very solid and very well insulated)
sure. you could. If you wanted to go through a lot more headache than necessary. the building styles are almost incompatible, making materials, joinery and sealing problematic. You'd have to remove walls and probably some floor- an RMH wont seat on the floor of an MH - it weights a several tons. frames of mobile homes Ive seen arent made for this weight, so it would require shoring or removal of floor. if you were talking >
ROCKET STOVE< and not a mass heater, that would be potentially doable, but you didnt say
rocket stove.
2) if I can do this could I vent it through my existing chimney so I would not have to create another exit hole from the interior?
Probably not. Id have to look at your specific design, best thing to do is take a bunch of measurements and read the book. your exhaust pipe length and rise are limited by the size of your burn assembly volume. Id wager the vertical exhaust after the heat transfer would not allow the exhaust out and you would loose significant draft if not just put the fire out. again,
rocket stove, a completely different story.
3) would some sort of RMH ; if able to build in my mobile home and use existing chimney to vent... would or could this heat most if not all the house?
it would not heat most of the house. it would even the heated period out, but if your current stove isnt doing it, the RMH wont, unless its HUGE. huge is more demolition and rebuild issues with incompatible materials. I suspect you lack insulation. Even Modern MH use r18 at best on stock in my area, region 7. what it will do is create nice warm pad or bench or floor area that has consistent warmth and low input. very nice for sleeping on, morning
coffee, etc. but its a local heat, radiant. youd have to have circulation to get it to the back rooms.
technical note:
cob weighs about 120#/sf. a cubic yard weighs @3240. most RHM use at least 2 yards material; Ive seen ones with 5. typical area is about 3-6sq/yards. if you can put 7500# on 50sf of your floor (or shore it so you can) you still have the mess of the construction in the home and the problem of venting through a wall if your vertical exhaust exhaust wont handle the flows.... again, Id consult the book and do the math.
all that considered, I'd suggest you to build a green house auxiliary heater with an RMH if your code situation allows. you could pipe the exhaust under the house in a exchanger, and seal it to uninsulated floor, thus heating up through the floor as well as through vents from the GH.
theres
alot of background info that you dont provide, and alot you dont have. I reckon I can say that cause Ive been doing this for about 20 years and im just starting to have a clue about those damn turds. Ive chromed a few myself.