Catalyst particles in the outer layer of a tubular reactor exchange heat with the wall by radiation

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Catalyst particles in the outer layer of a tubular reactor exchange heat with the wall by radiation as well as by convection 

(a) For 1/4-inch spherical catalyst beads at 390°C and a wall temperature of 380°C, what is the effective coefficient for radiant heat transfer? 

(b) Estimate the convective coefficient h using the correlation from Chap. 15: hD, kg = 0.5 1.94 Rep.33 (15.36)

Assume the gas has the properties of air and Rep = 500.

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Unit Operations Of Chemical Engineering

ISBN: 9780072848236

7th Edition

Authors: Warren McCabe, Julian Smith, Peter Harriott

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