The packed bed of length $3m$ and filled up to $=0\mathrm{.}70$ with spherical particles with an

effective diameter of $4mm.$ The column is connected to $4-$in diameter smooth piping.

a$)$ If a volume flow rate of $0\mathrm{.}2f\frac{t^3}{s}$ of alcohol $(=789k\frac{g}{m^3},=1\mathrm{.}19{10}^{-3}$Pas $)$ is fed to

the column, what is total head loss for the entire piping system? $(30$ points$)$

b$)$ If we where required to determine the pressure drop in the system, is it okay to neglect the

effects of gravity? Substantiate your answer with calculations. $(5$ points$)$