Thermal Efficiency of the Combined (Binary) Cycle

The figure shows the scheme of a simplest ideal combined (binary) cycle, i.e. steam turbine (6-7) cycle with use of superheated water steam. At this plant the boiler (6-9) burner is replaced with gas turbine unit (Brayton cycle: 1-4) equipped with air compressor (1-2), combustion chamber (2-3), gas …

Combined Heat and Power Technology Fact Sheets Series

The gas temperature at the exit of the gas turbine: Specific enthalpy of gas leaving the gas turbine: Specific heat supplied to the combustion chamber: Specific work of the gas turbine Specific work of the air compressor Thermal efficiency of cycle gas turbine: Combined (binary) cycle Outlet gas pressure and specific enthalpy from the steam boiler