|
Post by drooster on Nov 15, 2016 13:07:41 GMT -8
Does anyone have results from old experiments where the riser is waisted : i.e. narrowed in the middle and splayed at both ends. Like a stretched cooling tower. I imagine it could possibly accelerate the gases and create extra draught, but would be happy to find out it does not, by experimental results.
|
|
|
Post by Dan (Upstate NY, USA) on Nov 16, 2016 1:57:09 GMT -8
Those are shaped like that for strength via less concrete. A continuously narrowing channel gives more draft.
|
|
|
Post by drooster on Nov 16, 2016 11:10:32 GMT -8
I'm hoping for comments about the results of experiments with waisted risers.
|
|
|
Post by Dan (Upstate NY, USA) on Nov 17, 2016 2:44:55 GMT -8
I think donkey made one that continuously narrowed and didn't see a increased draft effect.
|
|
|
Post by drooster on Nov 17, 2016 8:55:06 GMT -8
|
|