Trev Ortex

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since Oct 04, 2015
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Recent posts by Trev Ortex

This thread describes a J type rocket where the flu goes down from a 8" to 5" before it exits the house:
http://donkey32.proboards.com/thread/2439/tell-burning-clean
1 year ago

Nice oven, Ernie. Isn't it the same as a Russian Stove but in miniature?

3 years ago

James Fleming wrote:I am curious as to why the barrel is not wrapped in thermal mass (i.e. 3-6" of cob) although that would slow the initial radient heating of the room, wouldn't that provide a longer, more even heating of the room?



Yes but what about instant heat when you're room is cold. In a traditional masonry stove it takes about an hour before the heat makes it through the mass and starts heating the room, the drum gives it straight away and the mass stores it for the long run, so you have the best of both.
3 years ago
I'm guessing this is the result of the volume of the pipe verses the internal surface area? I know from Hydro-Electrics that below a certain size pipe the frictional losses quickly add up to 100% and nothing can be gained.
4 years ago
I've been wondering the same thing. I remember reading somewhere (on the Donkey32 Proboards Rocket Stove forum) that they only really work down to 3 inch, but I cant find where I read it now and there doesn't seem to be any other mention of it. I was thinking of building a scale model 2 inch batchbox rocket out of clay to see how it behaved. Sure would make experimenting a lot easier.
4 years ago