Consider an ideal turbine power cycle with 2 stages of compression and 2 stages of expansion. Each turbine and each compressor have the pressure ratio of 8:1. The pressure at the entrance of first compressor is 100kpa. The temperature entering each compressor is 20  and the temperature entering in each turbine is 1100. An ideal regenerator is incorporated into the cycle. Determine the compressor work, turbine work and thermal efficiency of the cycle.