[TheForge] a lot of unimpressive BS

[Dann Johnson]

I see a chimney as a siphon hose.  Once the  air is flowing / drafting up, 
then the system tends to continue working. But like a siphon hose,   the 
system  often has to be primed a little.

Hot air rises (tends to be displaced upwards), but  air currents can do 
weird things.

There can be too much "noise"  ventilation, call it "cross ventilation" in 
a shop building  so that the hot smokey air is "sucked" (displaced)  AWAY 
from the chimney. I think that most on this list  understood the 
explanation that  Tom Troszak made about  the physics of air displacement / 
replacement air.   I am certain that Dave Brown did.

RE: Tom  Troszak's Pearls.    I  have been  verbally eviscerated a few 
times, even on this list.  Isn't all learning is a combination of pain and 
pleasure.

Oink Oink.  I was an Iowa Hog farmer <g>

Dann Johnson