Question $2.$ Refer to the shell$-$and$-$tube heat exchanger shown in question $1.$ The outer tube has an OD of $\frac{7}{8}$ in and the OD of the inner tube is $\frac{1}{2}in.$ Both tubes are standard steel tubes with $0\mathrm{.}049-$in wall thicknesses. The inside tube carries $4\mathrm{.}75ga\frac{l}{m}in$ of water at $200F$ and the shell carries $30\mathrm{.}0ga\frac{l}{m}in$ of ethylene glycol at $77F$ to carry heat away from the water. Compute the Reynolds number for the flow in both the tube and the shell. $(10$ Marks$)$