It is intended to design a heat exchanger for the crude oil with the following design specifications

$\backslash$table$[[$Fluid$,$Crude Oil,City Water$],[$Inlet temperature $C,102,21],[$Outlet Temperature,$65,-],[$Total Mass Flowrate $k\frac{g}{s},65,45],[\backslash$table$[[$Maximum Pressure$],[$Losses Pa$]],$Shell side $60000,$Tube side $45000]]$

A shell and tube heat exchanger with possible of $2$ for $4$ tube passes shall be considered. The shell diameter ID is considered to be $36$ inches with baffle spacing of $275$ mm $.$ Tubes are $\frac{3}{4}"$ OD $18$ BWG $($Birmingham Wire Gage of tube with their specifications shall be considered$).$ Calculations shall include overall heat exchanges length for both clean and fouled surfaces as well as Tube side velocity for both $1-2$ and $1-4$ arrangements, Overall heat transfer coefficients for clean and fouled surfaces. Pressure drops, pumping power necessary. Allowable maximum pressure drops are as given, $60$ kPa and $45$ kPa on shell side and tube side respectively.