Abstract
The paper presents thermodynamic analysis of the gas-steam unit of the 65
MWe combined heat and power station. Numerical analyses of the station was
performed for the nominal operation conditions determining the Brayton and
combined cycle. Furthermore, steam utilization for the gas turbine
propulsion in the Cheng cycle was analysed. In the considered
modernization, steam generated in the heat recovery steam generator unit
is directed into the gas turbine combustion chamber, resulting in the
Brayton cycle power increase. Computational flow mechanics codes were used
in the analysis of the thermodynamic and operational parameters of the
unit.
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