A fuel rod of a PWR consists of about 320 solid fuel pellets inside a zircaloy cladding. Use the specified data to plot the distribution of temperature in the fuel rod. The temperature distribution should include the fuel region, the gap region, the cladding region, and end at the bulk coolant for two cases of low and high lin- ear heat generation rates. Data: D_Fuel = 0.96 cm, D_inside Clad = 0.985 cm, D_outside Clad = 1.12 cm, k_fuel = 1.73 W/m C, k_clad = 5.2 W/m-C, T_water = 300 C, 4Low = 5 kW/ft %3D %D (164 W/cm), and d'_High = 15 kW/ft (492 W/cm). The heat transfer coefficient from the fuel rod to bulk coolant is 34 kW/m².

C. The heat transfer coefficient in the gap region is 5.7 kW/m².C for the low and is 11.4 kW/m²-C for the high linear heat generation rate.

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Solution However fast a falling BWR control blade or an ejecting PWR control rod is moving the nuclear reaction will reach immediate criticality very quickly From that point on the rate of power growt... View the full answer