Engineering, 06.03.2020 02:49, haldridge19
Consider an engine cover that is made with two layers of metal plates. The inner layer is stainless steel (k1 = 14 W/m*k) with a thickness of 10 mm, and the outer layer is aluminum (k2 = 237 W/m*K) with a thickness of 5 mm. Both metal plates have a surface roughness of about 23 micrometers. The aluminum plate is attached on the stainless steel plate by screws that exert an average pressure of 20 MPa at the interface. The inside stainless steel surface of the cover is exposed to heat from the engine with a convection heat transfer coefficient of 10 W/m^2*K at an ambient temperature of150 degrees C. The outside aluminum surface is exposed to a convection heat transfer coefficient of 25 W/m^2*K at an ambient temperature of 40 degrees C. Determine the heat flux through the engine cover.
Answers: 2
Engineering, 04.07.2019 18:10, niicoleassssssf
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
Engineering, 04.07.2019 18:10, keigleyhannah30
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
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