In a steam power plant operating on an ideal Rankine cycle, superheated steam enters the turbine at
$3 \: MPa$ and $350^ \circ C$. The condenser pressure is $75$ $kPa$. The thermal efficiency of the cycle is
________ percent.
Given data:
For saturated liquid, at $P=75 \:kPa$, $h_f=384.39 \:kJ/kg$, $v_f$ = $0.001037$ $m^3/kg$, $s_f=1.213\: kJ/kg-K$
At $75 \: kPa$, $h_{fg}=2278.6 \: kJ/kg$, $s_{fg}=6.2434 \:kJ/kg-K$
At $P = 3 \: MPa$ and $T=350^\circ C$ (superheated steam), $h=3115.3 \: kJ/kg$, $s=6.7428 \: kJ/kg-K$