36 coupe said: (quoted from post at 04:44:11 12/11/09) Bends do not decrease the draft.Draft happens because of the difference in inside and outside temperatures.It takes a movment of air to make smoke rise.Dirty chimneys cause reduced draft.Going thru the side makes a much colder chimney.
Bends most certainly DO decrease draft. It's called friction, and bends, elbows, etc, effect flow in just about ANY fluid system, whether natural draft, forced air, or liquid or air piping. As for a "much colder chimmney" going through the side, it just depends on how high up you "go through the side." If you go out up near the roofline, it won't be much or any colder than if you went through the roof.
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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