Melt Stream Heat to remove

Line Throughput kg/h

Melt Temperature °C

Solidification Temperature °C

Polymer Specific Heat kJ/kg·K

Quench Air Cabinet

Air Inlet Temperature °C

Air Outlet Temperature °C

Air Specific Heat kJ/kg·K

Air Density kg/m³

Quench Face Area m²

Threadline Geometry

Quench Zone Length m

Take-up Speed m/min

Quench Air Required

— m³/h

To carry the melt heat away at the stated temperature rise

Heat & Motion

Heat to Remove: — kW
Air Mass Flow: — kg/s
Quench Face Velocity: — m/s
Filament Residence Time: — s
Average Cooling Rate: — °C/s

Sensible heat only — the heat of crystallisation is additional and matters for polymers that crystallise strongly on the threadline. Cross-flow quench cabinets typically run in the region of 0.2 to 0.5 m/s at the face; a figure well above that is usually a sign the cabinet is under-sized rather than the process being fast.

Extrusion Quench Airflow & Cooling Rate Calculator — free, with the formula and a worked example, at Textile School.