A regenerative-cycle stationary gas turbine has compressor and turbine isentropic efficiencies of 0.85 and 0.9, respectively, a re-generator effectiveness of 0.8, and a compressor pressure ratio of 5. Determine the work of the compressor and the turbine, the net work, the turbine and re-generator exit temperatures, and the thermal efficiency for 20 C ambient and 1200 C turbine inlet temperatures. Compare the efficiency of the cycle with the corresponding simple-cycle efficiency.