Engineering, 11.02.2020 23:28 bre2795

A spent nuclear fuel (p-18,000 kg/m3, c-350 J/(kg-K), k-25 W/(m-K)) cylinder with length of 200 mm and diameter of 20 mm dissipates 2 kW of heat and is initially submerged in water at 20 C with convection heat transfer coefficient of 500 W/(m2K). If the water flow is accidentally lost the fuel is exposed to air at 20°C but with convection heat transfer coefficient of 50

(a) What is the steady-state surface temperature of the fuel in water?
(b) What is the steady-state surface temperature of the fuel in air?
(c) How long after water cooling is lost wl i take for the fuel to reach 1°C below its steady- state value in air?

Answers: 2

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A spent nuclear fuel (p-18,000 kg/m3, c-350 J/(kg-K), k-25 W/(m-K)) cylinder with length of 200 mm a...