(Solved): An air compressor and regenerative heat exchanger in a gas turbine system operating at steady stat ...

An air compressor and regenerative heat exchanger in a gas turbine system operating at steady state are shown below. Air flows from the compressor through the regenerator, and a separate stream of air passes though the regenerator in counterflow. Operating data are provided on the figure. Stray heat transfer to the surroundings and kinetic and potential energy effects can be neglected. The compressor power input is \( 6750 \mathrm{~kW} \). Determine (a) the mass flow rate of air entering the compressor, in \( \mathrm{kg} / \mathrm{s} \), (b) the temperature of the air exiting the regenerator at state 5 , in K, (c) the rates of entropy production in the compressor, in \( \mathrm{kW} / \mathrm{K} \), (d) the rates of entropy production in the regenerator, in \( \mathrm{kW} / \mathrm{K} \).