A gas turbine power plant operates on a simple Brayton cycle with air as the working fluid having a pressure ratio of 8. The compressor efficiency is 80% and its inlet conditions are 100 kPa and 300 K with a mass flow rate of 25 kg/s. The turbine efficiency is 85% and its inlet temperature is 1400 K. Heat is rejected to the surroundings at a rate of 8000 kW. Using Gas Turbine Simulator RIA (linked from left margin) determine
(a) The net power output,
(b) The thermal efficiency (ηth), and
(c) The back work ratio.