Question $2$

A power plant works on a binary vapour cycle and uses mercury and steam as the working substances. Saturated mercury vapour at $4\mathrm{.}5$ bar is supplied to the mercury turbine and it exhausts at $0\mathrm{.}04$ bar. The mercury condenser is used to generate saturated steam at $18$ bar which expands in the steam turbine to $0\mathrm{.}04$ bar. Assuming that all the processes are reversible and neglecting pump works, determine:

$($i$)$ The overall efficiency of the cycle

$($ii$)$ If $50,000kg$ of steam flows through the steam turbine, what is the flow of mercury through the mercury turbine?

$($iii$)$ The useful work done in the binary vapour cycle for the given steam flow.

Properties of mercury

$\backslash$table$[[\backslash$table$[[$Pressure$],[($bar$)]],\backslash$table$[[$Temp$.],[(C)$