$9\mathrm{.}32$ Find the cycle efficiency for the cycle in Problem $9\mathrm{.}31.$

where Problem $9\mathrm{.}31$ is: A power plant for a polar expedition uses ammonia and the boiler exit is $\backslash (80^\{\backslash$circ$\}\backslash$mathrm$\{$C$\},1000\backslash$mathrm$\{$kPa$\}\backslash )$ and the condenser operates at $\backslash (-15^\{\backslash$circ$\}\backslash$mathrm$\{$C$\}\backslash ).$ A single open "feed water" heater operates at $400$ kPa with an exit state of saturated liquid.

Note: Draw the system's configuration with corresponding state's number and the T$-$s diagram.