A power-generating Brayton cycle is shown in the figure below. The system is operating in a mountainous
Question:
A power-generating Brayton cycle is shown in the figure below. The system is operating in a mountainous region where the ambient temperature and pressure are 250 K and 85 kPa, respectively. The mass flow rate of air through the system is 200 kg/s. The system uses two compressors with pressure ratios of 6 and 4, respectively. The isentropic efficiency of each compressor is 90%. The air is cooled to 300 K in the heat exchanger between the compressors. The temperature at the combustor exit is 1500 K. The isentropic efficiency of the turbine is 75%. The system also includes a regenerative heat exchanger with an effectiveness of 80%. (a) Calculate the net power output, in kW, and the thermal efficiency, in %. (b) Draw the T-s diagram for the cycle and label the states.
College Algebra Graphs and Models
ISBN: 978-0321845405
5th edition
Authors: Marvin L. Bittinger, Judith A. Beecher, David J. Ellenbogen, Judith A. Penna