Chapter 9, Problem 9.28PP

Water at $10°C$ is flowing in the shell shown in Fig. 9.18 at the rate of $850L/min$. The shell is a $50$ mm OD $\times$

$1.5$ mm wall copper tube and the inside tubes are $15$ mm OD $\times$

   $1.2$ mm wall copper tubes, Compute the Reynolds number for the flow.