$9\mathrm{.}47$ Repeat Problem $9\mathrm{.}41,$ but assume a closed FWH

instead of an open FWH$.$ A single pump is used

to pump the water leaving the condenser up to the

boiler pressure of $3\mathrm{.}0$ MPa $.$ Condensate from the

FWH is drained through a trap to the condenser.

$-->9\mathrm{.}41$ Consider an ideal steam regenerative cycle in

which steam enters the turbine at $3\mathrm{.}0$MPa,$400\backslash$deg C

and exhausts to the condenser at $10$ kPa $.$ Steam is

extracted from the turbine at $0\mathrm{.}8$ MPa for an open

FWH$.$ The feedwater leaves the heater as saturated

liquid. The appropriate pumps are used for the wa$-$

ter leaving the condenser and the FWH$.$ Calculate

the thermal efficiency of the cycle and the specific

net work.