A gas turbine power plant consisting of high pressure (HP) and low pressure (LP) compressors and turbines is shown in the figure. The HP and LP turbines drive the HP and LP compressors, respectively....

A gas turbine power plant consisting of high pressure (HP) and low pressure (LP) compressors and turbines is shown in the figure. The HP and LP turbines drive the HP and LP compressors, respectively. a) Place letters “a” through “j” on the accompanying
T-s
diagram and b) use the given data to find the net work and the cycle thermal efficiency. Data:
T_a

= 20 C,
T_f

= 850 C, (r_P
)_C1
= (r_P
)_C2
= 4,


_c

= 80%,


_t

= 85%, and the heat exchanger effectiveness is 75%.