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# hw10 - function of axial position x mean inlet temperature...

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NCSU MAE310 H OMEWORK #10 Provide a clear concise solution for the proceeding convective heat transfer problems. 1. The surface of a 1.5-m long flat plate is maintained at 40°C, and water at a temperature of 4°C and a velocity of 0.6 m/s flows over the surface. (a)Using the film temperature T f for evaluation of the thermoproperties, calculate the heat transfer rate per unit width of the plate, q’. (b) Calculate the error in q’ that would be incurred in part (a) if the thermophysical properties of the water were evaluated at the free stream temperature and the same empirical correlations were used. 2. For fully-developed forced convection through a tube with a uniform wall heat flux q s ”, from a differential control volume, derive the mean temperature in the tube T(x) as a
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Unformatted text preview: function of axial position x, mean inlet temperature T mi , tube perimeter P, tube length L, mass flowrate m and specific heat c p . Clearly draw the differential control volume, labelling x, dx, x+dx, and all heat transfer rates. 3. For fully-developed forced convection through a tube with a uniform wall heat flux q s ”, from a differential control volume, derive the mean temperature in the tube T(x) as a function of axial position x, mean outlet temperature T mo , tube perimeter P, tube length L, mass flowrate m and specific heat c p . Clearly draw the differential control volume, labelling x, dx, x+dx, and all heat transfer rates....
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