Flowrate quantification of the pumped-air stream from a 63mm diameter centrifugal wheel atomiser

Comparison of Pumped Air Characteristics From a Rotary Atomizer With Three Types of Wheels

“…The power drawn by the atomizer motor was consumed in three principal ways: 7 1. Frictional losses in motor and driver parts (train gears and bearings), W f ; 2.…”

“…Dried particles deposited on wheel will over dry and can constitute a source of product contamination and potential ignition for fire and explosions 6 . Pumped air stream, which possesses a large amount of radial momentum, can significantly affect dryer flow pattern in pilot plants in diameter up to 2 m 7 …”

“…In this method, the power consumed for liquid shearing in upper and lower surfaces of wheel was neglected by the centrifugal pumping action. Stafford et al described a more explicit way to estimate the flow rate 7 . The atomization mechanisms are still not fully understood because it is a chaotic event.…”

“…Dried particles deposited on wheel will over dry and can constitute a source of product contamination and potential ignition for fire and explosions. 6 Pumped air stream, which possesses a large amount of radial momentum, can significantly affect dryer flow pattern in pilot plants in diameter up to 2 m. 7 To numerically simulate dryer flow field using computational fluid dynamics (CFD), it is essential to include pumped air stream as a mass flow inlet boundary condition. 8 Computational fluid dynamics methods have become a powerful tool due to their computational advances and have been used to study spray dryers.…”

“…Stafford et al described a more explicit way to estimate the flow rate. 7 The atomization mechanisms are still not fully understood because it is a chaotic event. Much of the uncertainty results from the experimental difficulties involved.…”