DB125: Lesson 3 - Wort Clarification Technology and Process Control SAQ: Suggested Response - Q5

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This lesson provides the opportunity for you to test yourself on the material covered in Lesson 2 (Wort Clarification Technology and Process Control) and determine the level to which you have attained the expected outcomes.

Suggested Response - Q5

**Your centrifuge operates at 6000 rpm and has a bowl with a radius of 0.6 m. Given the data below what is the settling velocity of this trub particle?

d = diameter of the trub particle = 0.008 m

ρ = trub particle density =1150 kg/m³

L = wort density = 1040 kg/m³

n = wort viscosity = 0.00125 kg/m.s

Response:

To calculate the settling velocity, we need to use the Stokes law equation:

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We need to calculate angular velocity (ω) from the rpm using this equation:

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We can now input all our figures into the Stokes law equation:

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Lesson 3 - Wort Clarification Technology and Process Control SAQ

Suggested Response - Q5

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