Oil with inlet mean-flow temperature of 20C flows through a heated tube 25m long at a rate of 0.5kg/s. The tube wall temperature is uniform at 150C and the diameter is 0.05m.
a) Determine the flow regime for the flow (laminar or turbulent). Is the flow hydraulically FD or thermally FD?
b) Determine the outlet mean-flow temperature. (Ans. 35C)
c) Determine the total heat-transfer to the oil. (Ans. q=15,980W)