Chapter 8, Problem 8.48P

Consider pressurized liquid water flowing at $m=0.\text{1kg}/\text{s}$ in a circular tube of diameter $D=0.\text{1m}$ and length $L=\text{ 6m}$ .

(a) If the water enters at $T_{m,i}=500$ K and the surface temperature of the tube is $T_s=510$ K. determine the water outlet temperature $T_{m,o}$ .

(b) If the water enters at $T_{m,i}=300$ K and the surface temperature of the tube is $T_s=310$ K. determine the water outlet temperature $T_{m,o}$ .

(c) If the water enters at $T_{m,i}=300$ K and the surface temperature of the tube is $T_s=647$ K. discuss whether the flow is laminar or turbulent.