The basic Principles of Pneumatic conveying stated by Great Alexander in 100 BC itself. In pre historical age Romans used Water supply pipelines and sewage disposable systems. Chinese conveyed Natural gas through Bamboo’s. These are the evidence for transporting physical objects in Pneumatic tubes.
Pneumatic conveying systems can be classified on different basis of consideration. These basis are listed below:
On average particle concentration (modes)
On air pressure (Types of systems)
On air supply arrangement
On solid feeder type
Of these, the first two are very important and often influence the choice of the specific design for a given material, loading and delivery condition and the distance to be covered.