I'm about to embark on my first rocket heater build for my workshop at home, and have a couple of 'newbie' questions to ask, before i start! - Apologies in advance if they have been covered before
How much benefit is there to be gained from establishing a vortex in the riser pipe? ...and therefore is it worthwhile building the riser with a round pipe, rather than box section steel?
I'll be using an old gas bottle to construct it into - should the riser pipe be brought to within 2" of the top of the bottle dome? Would it be better to keep the dome, or replace with a flat lid?
I have limited options with regard to the chimney - the garage roof is asbestos, so it wont be possible to take the flue straight up from the back of the heater and through the roof. I could either take the pipe straight through the garage wall at floor level horizontally and make a 90 degree turn up the outside of the wall, or run the flue up the inside of the garage, and make an s bend through the wall just below roof height. - Are there pros and cons to either option, and which will exhaust the gasses better?
Thanks for any advice
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