Qin- heat input rate (energy per unit time) m= mass flow rate (mass per unit time)
W- Mechanical power used by or provided to the system (energy per unit time)
h- Thermodynamic efficiency of the process (power used for turbine per heat input, unit less).
The thermodynamic efficiency of the cycle as the ratio of net power output to heat input.
Wnet = (Wturbine -Wpump )or (Qin -Qout )
h=Wnet / Qin