hello, great info here. thanks everyone! but: I have searched this and several other forums, watched every youtube i can find in RMH, and still have a few questions.
first, I see every heat vent/heat exchanger tube assembly advised to to be round to facilitate laminar air flow. In this publication
http://bioenergylists.org/stovesdoc/apro/Heat/Heating%20Stoves%20LO-RES.pdf put out by Aprovecho they say a wide flat rectangle tube works better, as it forces the hot air to "scrub" against the surfaces thus transfering more heat. has this idea been modified since this publication came out? (I could not see a date on it anywhere)
As to heat transfer, would it make sense to add a bunch metal fins to the ouside of the heat tubes that radiate out into the mass matrix? this is common on radiators and such, and seems like it would be easy to do and add to the heat transfer into the mass
I am looking to build a RMH in a 200 sqft tiny house. since 6" pipe construction seems to be the smallest that anyone recommends, would this just blow me out of the house when it is burning? It seems to be a very big heater for a tiny house. Can anyone comment on how small of a space is reasonable with a RMH? (maybe I should just light a candle!
Also, since floor space is at a premium for the heated bench, how short of an exhaust run can be built and accomplish adequate heat transfer so the exhaust flue is as cool as it can be and still function? (I know if the exhaust gases are too hot, it means I am wasting fuel...) I see limits to long length mentioned, but I have not seen comments as to how short is too short...)
(If the answers to these Qs are in "the book", please know I am ordering it, but since these questions dont seem to be raised anywhere I thought I would toss them out here
thanks,
kyle
