Engineering, 22.10.2019 23:00 keiryporthillo
Uniform internal heat generation at q˙ = 5.00 × 107 w/m3 is occurring in a cylindrical nuclear reactor fuel rod of 43-mm diameter, and under steady-state conditions the temperature distribution is of the form t(r)=a+br2 , where t is in degrees celsius and r is in meters, while a= 800 °c and b= -4.167 × 105 °c/m2. the fuel rod properties are k= 30 w/m·k, rho= 1100 kg/m3, and cp= 800 j/kg·k. what is the rate of heat transfer per unit length of the rod at r = 0 (the centerline) and at r = 25 mm (the surface)? if the reactor power level is suddenly increased to q2 = 108 w/m3, what is the initial time rate of temperature change at r = 0 and r = 25 mm?
Answers: 3
Engineering, 04.07.2019 18:10
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Answers: 1
Engineering, 04.07.2019 18:20
Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.
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Engineering, 06.07.2019 03:20
An air-conditioning system consists of a heating section and an evaporative cooler. air enters the heating section at 10°c and 70 percent relative humidity at a rate of 30m^3/min, and it leaves the evaporative cooler at 20°c and 60 percent relatively humidity. if the air conditioning system operates at a total pressure of 98 kpa, determine (a) the temperature and relative humidity of the air when it leaves the heating section, (b) the rate of heat transfer in the heating section, and (c) the rate of water added to air in the evaporative cooler
Answers: 2
Uniform internal heat generation at q˙ = 5.00 × 107 w/m3 is occurring in a cylindrical nuclear reac...
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