The cross section of a long cylindrical fuel element in a

Chapter , Problem 3.97

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The cross section of a long cylindrical fuel element in a nuclear reactor is shown. Energy generation occurs uniformly in the thorium fuel rod, which is of diameter D 25 mm and is wrapped in a thin aluminum cladding (a) It is proposed that, under steady-state conditions, the system operates with a generation rate of q . 7 108 W/m3 and cooling system characteristics of T 95 C and h 7000 W/m2 K. Is this proposal satisfactory? (b) Explore the effect of variations in q . and h by plotting temperature distributions T(r) for a range of parameter values. Suggest an envelope of acceptable operating conditions.

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