Before installing a line to transport tomato concentrate (a non-Newtonian fluid) between two stages of a process, the following data was obtained from pilot plant trails in which pressure drop was measured as a function of flow rate for different pipe diameters

Diameter (mm) Volumetric flow (L min-1) Pressure gradient (kPa m-1) 25 184.0 17.6 25 92.0 14.1 50 441.0 5.92 50 147.3 4.10 75 124.3 1.63

Determine the pressure drop required to transfer tomato concentrate along 25 m of 50 mm diameter pipe at a rate of 3.6 cu.m/h