Question: Consider the elementary extruder we designed in class. Suppose we wish to produce 10 Kg/hr of a polymer density of 782 kg/m3 and viscosity of

Consider the elementary extruder we designed in class. Suppose we wish to produce 10 Kg/hr of a polymer density of 782 kg/m3 and viscosity of 30,000 Pa.s through a slit die with a gap of h = 2.5 mm, l/h = 30, and a width W= 1.5 m. The dimensions of the upstream channel are H = 20 mm and L = 0.75 m. (a) (30 points) Determine the equation that relates the power consumption to the extruder flow rate per unit width. (b) (10 points) Determine the flow rate per unit length q. (c) (10 points) What is the velocity of the moving wall? (d) (10 points) Find the pressure at the entrance of the die. (e) (10 points) Using the equation you determine in (a), calculate the power requirement for this operation.

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