Answer to Question #316340 in Mechanical Engineering for Thomas

Question

Air goes through a Brayton cycle gas turbine, entering the compressor at 21 C and 107 kPa. When it reaches the turbine inlet, the air is at 884 C and 1.36 MPa. What is the net change in specific enthalpy of the working fluid after going through the compressor and heat addition processes? You may assume that the specific heat capacity c. is a constant 1.005 kJkg 1-K throughout the whole cycle. Give your answer in kJ-kg^-1 to one decimal place.

Answer 1

The Brayton cycle is a thermodynamic cycle that describes the operation of certain heat engines that have air or some other gas as their working fluid. The original Brayton engines used a piston compressor and piston expander, but modern gas turbine engines and airbreathing jet engines also follow the Brayton cycle.