Calculate the rate of heat transfer per square meter

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Question: Consider a journal bearing using the oil of Prob. Let the journal diameter be 7:6cm, the clearance be 0.025 ern, and the rpm be 3600. Neglecting end effects, and assuming no flow of oil into or mit of the system, calculate the temperature distribution in the oil film on the assumption that there is no heat transfer into the journal but that the bearing surface is maintained at 80°C. Calculate the rate of heat transfer per square meter of bearing surface. Assume no eccentricity, that is, no load on the bearing. How much power is needed to rotate the journal if the bearing is 10 cm long?

Problem: A lubricating oil flows through a long 0.6 cm inner-diameter tube at a mean velocity of 6 m/s. If the tube is effectively insulated, calculate and plot the temperature distribution, resulting from frictional heating, in terms of the pertinent parameters. Let the fluid properties be those of a typical engine oil at 100°C. Start with Equation.

Reference no: EM131512326

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