an Entity references as follows:
The Cheng cycle is a thermodynamic cycle which uses a combination of two working fluids, one gas and one steam. It can therefore be considered a combination of the Brayton cycle and the Rankine cycle. It was named for Dr. Dah Yu Cheng. A fully Cheng Cycle design Gas/Steam two fluid flow turbine can achieve a theoretical thermal efficiency of 60% matching or even exceeding many traditional Combined Cycle Gas Turbines that keep the steam Rankine Cycle and gas Brayton Cycle as separate loops.