Find the cycle efficiency for the cycle in Problem 9.41.

Data from Problem 9.41.

A power plant for a polar expedition uses ammonia and the boiler exit is 80◦C, 1000 kPa, and the condenser operates at −15◦C. A single open FWH operates at 400 kPa with an exit state of saturated liquid. Find the mass fraction extracted in the turbine.