Abstract— The present study was made to evaluate the performance of Braysson cycle. Braysson cycle is a hybrid gas turbine, combination of Brayton cycle and Ericsson cycle. The hybrid gas turbine is proposed based on the Brayton cycle at high temperature heat addition and low temperature heat rejection at Ericsson cycle. The performance was evaluated in terms of thermal efficiency, exergy losses and specific power output.
Energy and exergy analysis was carried out on Braysson cycle and Brayton cycle. The analytical formula was derived for energy efficiency, specific power output, exergy losses of each component, and the exergy efficiency. The influence of various parameters on the performance of the Braysson cycle and Brayton cycle were analyzed. The analysis was carried …show more content…
First law efficiency of Braysson cycle and Brayton cycle at temperature ratio 3.0 varying with pressure ratio is analyzed by fig.1.The efficiency of Braysson cycle is greater than Brayton cycle because in Braysson cycle utilizing the hot exhaust gasses from Brayton cycle are expanded in bottom cycle (Ericsson cycle). The first law efficiency of cycle with methane as working fluid is having high efficiency compared to all other working fluids. Since first law efficiency is a function of temperature ratio and value of ratio of specific heats (γ).
Second law efficiency Fig.2 Second law efficiency of Braysson cycle and Brayton cycle at temperature ratio 3.0 varying with pressure ratio. Fig.3 Second law efficiency of Braysson cycle and Brayton cycle at pressure ratio3.0 varying with temperature
Energy and exergy analysis was carried out on Braysson cycle and Brayton cycle. The analytical formula was derived for energy efficiency, specific power output, exergy losses of each component, and the exergy efficiency. The influence of various parameters on the performance of the Braysson cycle and Brayton cycle were analyzed. The analysis was carried …show more content…
First law efficiency of Braysson cycle and Brayton cycle at temperature ratio 3.0 varying with pressure ratio is analyzed by fig.1.The efficiency of Braysson cycle is greater than Brayton cycle because in Braysson cycle utilizing the hot exhaust gasses from Brayton cycle are expanded in bottom cycle (Ericsson cycle). The first law efficiency of cycle with methane as working fluid is having high efficiency compared to all other working fluids. Since first law efficiency is a function of temperature ratio and value of ratio of specific heats (γ).
Second law efficiency Fig.2 Second law efficiency of Braysson cycle and Brayton cycle at temperature ratio 3.0 varying with pressure ratio. Fig.3 Second law efficiency of Braysson cycle and Brayton cycle at pressure ratio3.0 varying with temperature