engineering recuitment GATE ME 2023-24 Test Series Power Engineering Gas and Vapor Power Cycles Brayton Cycle
For the Brayton cycle, the maximum temperature in the cycle is limited to T3 by metallurgical conditions. The minimum temperature is set to T1 by the temperature of inlet air.
1
The optimum pressure ratio for fixed values of T1 and T3, for which work is maximum is given by \({\left( {\frac{{{T_3}}}{{{T_1}}}} \right)^{\frac{\gamma }{{2\left( {\gamma - 1} \right)}}}}\)
2
At that optimum pressure ratio, thermal efficiency of the brayton cycle is given by \(1 - \sqrt {\frac{{{T_3}}}{{{T_1}}}} \)
3
At that optimum pressure ratio, heat rejected during the brayton cycle is given by \(m{C_p}\left[ {\sqrt {{T_1}{T_3}} - {T_1}} \right]\)
4
The maximum work for fixed values of T1 and T3 is given by \(m{C_P}{\left[ {\sqrt {{T_1}} - \sqrt {{T_3}} } \right]^2}\)