You should use the template to present your answers to the following questions:

$1.$ With your individual data, calculate y$1$D$,$ D$,$ W$,$ xW$,$ Tt$,$ Tb$,$ Pp$,$ Tp and CV$.$

$2.$ Recalculate the output values from Question $1$ when your QB value changes by i$)+40\%,$

ii$)+70\%,$ iii$)-30\%$

$3.$ Recalculate the output values from Question $1$ when your x$1$F value changes by i$)+0\mathrm{.}2,$

ii$)-0\mathrm{.}2$

$4.$ Recalculate the output values from Question $1$ when your q value changes by i$)+0\mathrm{.}5,$

ii$)-0\mathrm{.}5$

$5.$ Recalculate the output values from Question $1$ when your reflux ratio, R is changed to

i$)7,$ ii$)10,$ iii$)$ it$$s minimum at your QB value

$6.$ Recalculate the output values from Question $1$ when the column pressure, PC changes

by i$)+7$ bar, ii$)3$ bar

$7.$ Calculate the minimum column pressure, PC needed to allow the feed flowrate, F to

increase by $130\%,$ and the corresponding change in column conditions.

$8.$ Calculate the pressure and temperature set$-$points Pp and Tt to give y$1$D $=0\mathrm{.}80$ and x$1$W

$=0\mathrm{.}25,$ and the corresponding reflux ratio.

Hints and tips:

$1.$ Calculating u and $$ You can calculate these parameters based on an average

temperature within the column, taken as the average of the pure component boiling points

at the column pressure.

$2.$ Calculating CV $$ The density of water can be assumed to be $1000$ kg$/$m$3$ at the reference

conditions for the flow coefficient equation.

$3.$ Calculating Tt and Tb $$ These temperatures can be estimated based on the bubble point of

the liquid at the appropriate stage.

$4.$ Calculating Tp and Pp $$ Assume that the propane refrigerant is at the same temperature as

the two$-$phase mixture in the condenser. The Antoine equation constants for propane are:

A $=6\mathrm{.}803,$ B $=804\mathrm{.}0,$ C $=247\mathrm{.}04($p$*$ in mmHg$,$ T in oC$)$

$5.$ You may get two solutions to Question $8.$ Either can be presented as your answer.