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second bell alternative

 
pollinator
Posts: 384
Location: Victor, Montana; Zone 5b
118
hugelkultur forest garden food preservation
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Anyone experiment with increasing the horizontal flue run to say 14" on a short bench run rather than using a secondary bell? Basically the same thing, just thought I would see if anyone had done something like this. If you had an 8" system that ran six feet, switch to 14" ducting for a yard or so, then switched back, would it perform the same as with a bell? I've only ever built a standard 8" without any secondary bells so this it outside my experience.
 
gardener
Posts: 3241
Location: Southern alps, on the French side of the french /italian border 5000ft elevation
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Daniel Ray
pollinator
Posts: 384
Location: Victor, Montana; Zone 5b
118
hugelkultur forest garden food preservation
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Thanks for the link. I've seen the NYC Rocket Stove build in the forum before and is probably what made me think of using a larger diameter just recently, I just couldn't place where I had seen it or if I had dreamed it instead. Thanks again. I'll post photos if I build
 
Being a smart alec beats the alternative. This tiny ad knows what I'm talking about:
Rocket Mass Heater Plans - now free for a while
https://permies.com/goodies/7/rmhplans
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