Material & Speed Per position

Feed Sliver Linear Density ktex

Yarn Count Ne

Delivery Speed m/min

Machine Efficiency %

Spinning Positions no.

Nozzle Air Compressed air

Nozzle Pressure (gauge) MPa

Reference Pressure of Rated Flow MPa

Rated Air per Position Nm³/h

Machine Production

— kg/h

All positions at the stated delivery speed and efficiency

Draft, Output & Air

Total Draft (sliver → yarn): — ×
Yarn Linear Density: — tex
Production per Position: — kg/h
Air Consumption: — Nm³/h
Specific Air per kg Yarn: — Nm³/kg

Rated air figures are quoted at a specific nozzle pressure; comparing two machines at different pressures without normalising is how vortex air budgets get missed.

Vortex (Air-Jet) Spinning Delivery Speed & Draft Modeler — free, with the formula and a worked example, at Textile School.