Engineering, 12.03.2020 22:21, Pmedellin27
In a manufacturing process, long aluminum rods of square cross section with d = 25 mm are cooled from an initial temperature of Ti = 400°C. Which configuration in the sketch should be used to minimize the time needed for the rods to reach a safe‐to‐handle temperature of 60°C when exposed to air in cross flow at V = 8 m/s, T[infinity] = 30°C? What is the required cooling time for the preferred configuration? The emissivity of the rods is ε = 0.10 and the surroundings temperature is Tsur = 20°C.
Answers: 1
Engineering, 03.07.2019 14:10, volleyballfun24
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
Answers: 3
Engineering, 04.07.2019 19:10, lexie223
Acircular aluminum shaft mounted in a journal is shown. the symmetric clearance gap between the shaft and journal is filled with sae 10w-30 oil at t 30°c. the shaft is caused to turn by the attached mass and cord. develop and solve a differential equation for the angular speed of the shaft as a function of time.
Answers: 2
Engineering, 04.07.2019 19:20, amandaaarmentaa
Acircular pipe of 30mm outside diameter is placed in an airstream at 30 c and latm pressure. the air moves in cross flow over the pipe at 20 m/s, while the outer surface of the pipe is maintained at 110 c. what is the drag force exerted on the pipe per unit length? what is the rate of heat transfer from the pipe per unit length?
Answers: 1
In a manufacturing process, long aluminum rods of square cross section with d = 25 mm are cooled fro...
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