Show that for a given Biot number, the approximate unaccomplished temperature change for a sphere given by

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Show that for a given Biot number, the approximate unaccomplished temperature change for a sphere given by Eq. (10.32) can be expressed as a function of Fo and Bi. Compare the values found from the equation for Bi= 0.5 and Bi= 1.0 with the values from Fig. 10.8.

Eq. 10.32

In T - T T - Ta -3Ut pcprm (10.32)

Fig. 10.8

1.0 0.8 =0 0.6 0.4 0.2 12 0.1 008 0.06 0.04 C.02 0.01 O 0.2 50 0.4 10 0.6 Fo= 0.8 at 5 Eq. (10.32) Bi 1.0 hr,

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Unit Operations Of Chemical Engineering

ISBN: 9780072848236

7th Edition

Authors: Warren McCabe, Julian Smith, Peter Harriott

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