Enter the pounds per hour, specific heat, and temperature change in the barrel to calculate the extruder power required.
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Extruder Power Formula
The following formula is used to calculate the power required by an extruder.
EP = .00053* mdot * c * T
- Where EP is the extruder power (horsepower, hp)
- mdot is the output (lbs /hr)
- c is the specific heat (BTU/hr-F)
- T is the change in temperature (F)
To calculate the extruder power, multiply output, by the specific heat, then multiply that result by the temperature rise.
What is Extruder Power?
Definition:
Extruder power is a measure of the total energy per unit time that an extruder needs to be supplied with in order to properly run.
How to calculate Extruder Power?
Example Problem:
The following example outlines how to calculate an extruder power requirement.
First, determine the output/mass flow rate. In this example, the output is 1000 lbs/hr.
Next, determine the specific heat of the material. This extruder material has a specific heat of .55 BTU/hr-f.
Next, determine the temperature change within the extruder. In this case, the change in temperature if 400F.
Finally, calculate the extruder power using the formula above:
EP = .00053* mdot * c * T
EP = .00053* 1000 * .55 * 400
EP = 116.6 hp