Slightly OT, not fully an HVAC question, but I know you guys have the
answers! (Well, I hope so).
With relatively low pressure air (like hot air supply off a furnace)
there are major drops in pressure if you turn 90 degrees, even
smoothly... with every bend sucking up more of your flow.
What about with high pressures? If I have air coming out of a
compressor at 80-100psi, do 90 degree bends make much of a difference
in pressure? Or does the loss factor decrease as pressures are