A gas turbine engine operates on the Brayton Cycle. Air enters the compressor at 290 K, 100 kPa, the pressure ratio across the compressor is 5:1 and the maximum air temperature is 1200 K.
(a) Iftheengineisusedinanelectricpowergenerationstation,howmuchwork(perkgofair)is available to drive the generator? What is the thermal efficiency of the engine?
(b) If the engine is used to power a jet aircraft, at what pressure would the air leave the turbine? If the air leaving the turbine is expanded to 100 kPa in an adiabatic nozzle, at what velocity will the air leave the nozzle?