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What is the range of Reynolds number(Re) for small particles in the fluidization bed?

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+2 votes
in Fluidization Engineering by (102k points)
What is the range of Reynolds number(Re) for small particles in the fluidization bed?

(a) Re < 20

(b) Re > 20

(c) Re > 1000

(d) 20 > Re < 1000

I have been asked this question during an interview.

My doubt is from Minimum Fluidizing Velocity in section Fluidization and Mapping of Regimes of Fluidization Engineering

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Best answer
The correct option is (c) Re > 1000

Explanation: Since larger particles require large velocity of gas to lift the particles, hence the Re is large.

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