Water at $10\backslash$deg C is pumped from a lake as shown in Figure $1$C$.$ What would be maximum allowable value of h $($in Figure $2)$ if the liquid volumetric flowrate is $33\mathrm{.}9$ m$3/$h$,$ and the tube internal diameter is $10$cm$.$ The water vapour pressure in $10\backslash$deg C is $1228$Pa and water density is $999\mathrm{.}7$kg$/$m$3$ and viscosity $1\mathrm{.}110-3$ Pa$$s$.$ The tube roughness surface is e $=0\mathrm{.}045$ mm and friction loss coefficient for the entrance Kf $=1.$ Pressure outside is $1013$hPa.