A heat engine operates by absorbing heat from saturated steam at 5 bar condensing completely to form a saturated liquid at a rate of 1.5 kg/s. The heat engine operates at 80% of the maximum theoretical efficiency. The heat engine rejects heat to an ambient reservoir at 30°C.
a) What is the thermal efficiency of the heat engine?
b) How much work is done by the heat engine?
c) How much heat is rejected to the ambient reservoir?
d) What is the total entropy change of the universe associated with this system?