History of Technologies Depending on Pressure and Air Velocity by Dr. Leonhard E. Bernold Hanyang University Dasan Conference 2010 October 27-29, 2010
Presentation Outline 1)The Early Scientists 2) Happy Birthday 3) Alfred Beach 4)Capsule Pneumatic Mail 5)Pneumatic Material Conveying 6)Air Supported Conveying
Pneuma: Greek for the vital spirit; the soul Pneuma: Greek for the vital spirit; the soul. Pneumatics: Operated by air or by the pressure or exhaustion of air.
Hero of Alexandria (10 AD) Hero’s Magical Fountain
Leonardo Da Vinci 1452 ??? At 10 m No Water
Evangelista Torricelli, 1608 “We live at the bottom of an ocean of air!”
Blaise Pascal, 1623
Daniel Bernoulli, 1782
Happy 100 Year Birthday
Add the Cyclone and Robot
Pneumatic Subway New York, 1867 Alfred Beach
8” (20 cm) Capsule Pneumatic Mail New York
Pneumatic Material Conveying
Velocity - Pressure Loss - Energy
Reynolds = 4000
Material Feeding and Acceleration
Pulse/Plug Flow Pneumatic Conveying
Air Supported Conveyors
Pneumatic Inline Filtering
Is This Vacuum?
Thank You for Your Attention