Centrifugal Compressors

$70$ bar, electric motor drive with gearbox, material of construction: steel power $30-7600kW$

$C=2060[kW{]}^{0\mathrm{.}8}$

Material factor: stainless steel $2\mathrm{.}5$

Other factors: pressure $[P\frac{\text{b}\text{a}\text{r}}{70}{]}^{0\mathrm{.}18}$

COSTS OF SERVICES AND RAW MATERIALS

$\backslash$table$[[$Cooling water,$0\mathrm{.}030$ per tonne$],[$Electricity$,40$ per MWh$],[$toluene$,200$ per tonne$],[$benzoic acid,$400$ per tonne$]]$

Shell and tube heat exchangers

carbon steel tubes and shell.

a$)A=2$ to $25m^2.$

$C=3800e^{0\mathrm{.}05A}$

b$)A>25m^2.$

$C=7900e^{0\mathrm{.}01A}$

Shell and tube material factor, $f.$

$f=a+(0\mathrm{.}01a{)}^b$

$\backslash$table$[[$shell$,$tube,$a,b$