In a simple Brayton cycle, the pressure ratio is 8, and temperatures at the entrance of the compressor and turbine are 300 K and 1400 K, respectively. Both compressor and gas turbine have isentropic efficiencies equal to 0.8. For the gas, assume a constant value of cp (specific heat at constant pressure) equal to 1 kJ/kgK and a ratio of specific heat as 1.4. Neglect changes in kinetic and potential energies.
The thermal efficiency of the cycle in percentage (%) is
24.8
Compressor outlet is 300+(543.43−300)/0.8=604.29 K. Turbine isentropic outlet is 1400/8^(0.4/1.4)=772.86 K, and actual turbine work is 0.8(1400−772.86)=501.71 kJ/kg. Net work is about 197.42 and heat input 795.71 kJ/kg, giving efficiency about 24.8%.
Important Questions from Brayton Cycle
Which of the following cycles is not a reversible cycle?
A. Carnot
B. Ericsson
C. Stirling
D. Joule
Stirling and Ericsson cycle are
Ericsson cycle consists of the following four processes
In Brayton cycle, heat addition is a________.
Brayton cycle is an air standard cycle for
