3- Consider a tube wall temperature at uniform 100C. Air with a mean velocity of 5m/s...

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3- Consider a tube wall temperature at uniform 100C. Air with a mean velocity of 5m/s and an inlet temperature of 30C and pressure of 1-atm flow inside the tube with inside diameter is 5 cm. Assume that the flow and temperature distributions across the tube are fully developed, calculate (a) the heat transfer coefficient, (b) the length of the tube if the outlet mean temperature of the airstream is 95C, and (c) temperature variation of air along the tube and draw it d) the flow and thermal entrance lengths. Is the assumption of fully developed flow and heat transfer justified? 30 3- Consider a tube wall temperature at uniform 100C. Air with a mean velocity of 5m/s and an inlet temperature of 30C and pressure of 1-atm flow inside the tube with inside diameter is 5 cm. Assume that the flow and temperature distributions across the tube are fully developed, calculate (a) the heat transfer coefficient, (b) the length of the tube if the outlet mean temperature of the airstream is 95C, and (c) temperature variation of air along the tube and draw it d) the flow and thermal entrance lengths. Is the assumption of fully developed flow and heat transfer justified? 30