Engineering, 24.11.2020 21:00 kalialee2424
Uniform internal heat generation at 3.50 × 107 W/m3 is occurring in a cylindrical nuclear reactor fuel rod of 40-mm diameter, and under steady-state conditions the temperature distribution is of the form , where is in degrees Celsius and r is in meters, while 800 °C and -2.917 × 105 °C/m2. The fuel rod properties are 30 W/m·K, 1100 kg/m3, and 800 J/kg·K.
1. Find the steady state temperature gradient at the outer surface of the rod, in °C/m. eC/m dr
2. What is the steady state rate of heat transfer at the outer surface, in W/m? W/m
3. What is the steady state rate of heat transfer at the centerline, in W/m? q(0)= W/m Step 4 =0 sec),
4. What is the temperature at the centerline, in °C?
Answers: 2
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Engineering, 04.07.2019 19:20
At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2
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Engineering, 04.07.2019 19:20
Apure substance is a)-mixture of various chemical elements or compounds b)-substance that has a fixed chemical composition throughout c)-mixture that is homogeneous (such as air) d)-all the answers
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Uniform internal heat generation at 3.50 × 107 W/m3 is occurring in a cylindrical nuclear reactor...
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