INVESTIGATION AND IMPROVEMENT OF COMBINED CYCLE POWER PLANTS BY MODIFYING HEAT RECOVERY STEAM GENERATION SECTION

Date

2024-1

Author

Hassan, Munzir

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As the world's energy demand increases and shifts to more fuel-efficient production systems, the combined cycle power plants (CCPP) remain at the peak of thermal efficiency at 63.7%. So, any improvement will have considerable environmental and economic benefits. This study focuses on a power plant using a natural gas heavy-duty gas turbine thermodynamic optimizations will be conducted using MATLAB to model an essential device in the CCPP called a Heat recovery steam generator (HRSG), which recovers the heat from the exhaust gases of the turbine to generate steam for the steam cycle. The model was first validated by comparing its results with actual experimental results for the mentioned Gas turbine. The modeling tests add a new section in the HRSG to generate a fourth line of steam, which will be used to enhance the Brayton cycle by turbocharging or steam injection methods. The zero-dimensional (0 D) modeling found an increment of 4.6% in plant efficiency to reach 68.1% and generate additional power when using a turbocharging approach. Moreover, the evaluated results for several modified cycles are also presented in comparison with the existing studies.

Subject Keywords

Combined Cycle power plants, Energy, Efficiency, Heat Recovery Steam Generator (HRSG), Modified Gas Turbine cycles

URI

https://hdl.handle.net/11511/109430

Collections

Northern Cyprus Campus, Thesis