I JUST NEED PROCEDURE.TABLE $16\mathrm{.}2$

TABLE $16\mathrm{.}3$

TABLE $16\mathrm{.}4$

Temperatures, enthalpies, and flow rates for Example $16\mathrm{.}3$

A forced circulation triple effect evaporator is fed with $60000$ Ib$/$h of a $10\%$ caustic soda solution at a temperature of $180\backslash$deg F$.$ The concentrated solution will contain $50\%$ NaOH. The concentrated solution will contain $50\%$ NaOH. Saturated water vapor at $50$ abs is used as the heating steam, and the condensing temperature of the steam from the third effect will be $100$ order of effects is II$,$ III, I. Radiation and subcooling of the condensate are negligible. The coefficients

Ibf $/$in$\mathrm{.}2$

$\backslash$deg F$.$ The

The global coefficients Ibf $/$in$\mathrm{.}2\backslash$deg F$.$ The overall coefficients corrected for boiling point rise are given in Table $16\mathrm{.}2.$

a$)$ The heating surface required in each effect, assuming that the surfaces are equal in all of them; b$)$ The heating surface required in each effect, assuming that the surfaces are equal in all of them.

that the surface areas are equal in all of them;

b$)$ The consumption of heating steam, and

c$)$ The economy of such steam.

THE ANSWERS ARE

$($a$)$ Area per effect: $719$ft$2(66\mathrm{.}8$ m$2)$

$($b$)$ Steam consumption: $19,370$ lb$/$h $(8786$ kg$/$h$)$

$($c$)$ Economy: $48,000/19,370=2\mathrm{.}48$