Toolbox - Covalp

Energy

Cp	kJ/kg/K°
Density	kg/m³
Output	l/h
T° inlet	°C
T° outlet	°C

POWER	kW

1kcal/h=1.163Wh Cp water = 4.18 KJ.kg-1.K-1 1 Watt = 1 joule/s 1 Wh = 3600 J K° = C° + 273.16

Specific energy

Extruder speed	rpm
Max. extr. Speed	rpm
Torque	%
Nominal power	kW
Efficienty factor
Output	kg/h

Specific energy	kWh/kg

Speed Calculation

Line speed

m/min

% fluff

%

Ration MDO

Winder Width

mm

Layer	RPM max	kg/h max	g/cm³	µm
Sat 1
Sat 3
Core
Sat 4
Sat 2

	Speed	Output
Sat 1	rpm	kg/h
Sat 3	rpm	kg/h
Core	rpm	kg/h
Sat 4	rpm	kg/h
Sat 2	rpm	kg/h

Line ratio

CR speed

m/min

Stretch Ext CR

Die gap	mm
Die width	mm
Die throughput	kg/h
Melt density	g/cm³
CR speed	m/min

Extruder/CR stretching

Stretch TDO

Line speed

m/min

	Length	Width	Angle	Angle/prev
File 1	m	mm	°	°
File 2	m	mm	°	°
File 3	m	mm	°	°
File 4	m	mm	°	°
File 5	m	mm	°	°
File 6	m	mm	°	°
File 7	m	mm	°	°
File 8	m	mm	°	°
File 9	m	mm	°	°
File 10	m	mm	°	°
File 11	m	mm	°	°
File 12	m	mm	°	°
File 13	m	mm	°	°
File 14	m	mm	°	°
File 15	m	mm	°	°
File 16	m	mm	°	°
File 17	m	mm	°	°
File 18	m	mm	°	°
File 19	m	mm	°	°
File 20	m	mm	°	°
File 21	m	mm	°	°
File 22	m	mm	°	°
File 23	m	mm	°	°
File 24	m	mm	°	°

Stretching TD x

Relaxation

%

Time

s

Winder

Ø MAX	mm
Ø Core	mm
Thickness	µm
Width	mm
Density	%

Length Max	m

Length	m
Actual radius	mm

Calc. Density	%

PRS speed	m/min
Product density

Output winder	kg/h