This problem is designed to accompany Introductory Chemical Engineering Thermodynamics, Elliott and Lira, Prentice$-$Hall, $2012.$ Some of the hints reference parts of the textbook.

This modified Rankine power cycle involves three turbines, an open and a closed feed water preheater, a condenser, a boiler$/$superheater$,$ two pumps and a throttle. The schematic is shown above and in the the text book on page $206$ Figure $5\mathrm{.}6.$ In this problem, all of the turbines and the pump between streams $5$ and $6$ are considered reversible. You should be able to do balances around them if were not ideal however. There are $18$ parts to the problem shown one$-$at$-$a$-$time but many of the steps will not take very long to solve.

The pressures and temperatures are given are $P_1=10$MPa,$P_2=4$MPa,$P_3=2$MPa.$T_1=532C,T_8=216C,T_9=300C.$ Streams $m2,m3,$ and $m4go$ into the top of the respective preheater$/$condenser$.$ What is the enthalpy of Stream $10($kJ$/$kg$)?$