Compute the average heat transfer coefficient hc for 10°C water flowing at 4 m/s in a long, 2.5-cm-ID pipe (surface temperature 40°C) by three different equations and compare your results. Also determine the pressure drop per meter length of pipe.
GIVEN
Water flowing through a pipe
Water temperature (Tb) = 10°C
Water velocity (V) = 4 m/s
Inside diameter of pipe (D) = 2.5 cm = 0.025 m
Pipe surface temperature (Ts) = 40°C
ASSUMPTIONS
Steady state
Uniform and constant wall surface temperature
Pipe wall is smooth
Fully developed flow (L/D >60)
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November 24, 2011

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