Question

An ideal gas-turbine cycle with two stages of compression and two stages of expansion has an overall pressure ratio of 8. Air enters each stage of the compressor at 300 k and each stage of the turbine at 1300 k. Determine the back work ratio and the thermal efficiency of this gas-turbine cycle, assuming (a) no regenerator and (b) an ideal regenerator with 100% effectivenes

Answer 1

b is the answer I think.

Answer 2

An ideal gas-turbine cycle with two stages of compression and two stages of expansion has an overall pressure ratio of 8. Air enters each stage of the compressor at 300 k and each stage of the turbine at 1300 k. Determine the back work ratio and the thermal efficiency of this gas-turbine cycle, assuming (a) no regenerator and

✔️(b) an ideal regenerator with 100% effectivenes