Development And Validation of A Simulation Model for Performance Optimization of An Integrated Biogas and Natural Gas Combined-Cycle Power Plant

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@article{1722800,
      author = {Enwere, C. E., Oreko, B. U},
      title = {Development And Validation of A Simulation Model for Performance Optimization of An Integrated Biogas and Natural Gas Combined-Cycle Power Plant},
      journal = {Iconic Research And Engineering Journals},
      year = {2026},
      volume = {10},
      number = {3},
      pages = {40-46},
      issn = {2456-8880},
      url = {https://www.irejournals.com/formatedpaper/1722800.pdf},
      abstract = {This study develops and validates a thermodynamic simulation model of an integrated biogas-natural gas combined-cycle gas turbine (CCGT) power plant. First-law mass and energy conservation principles were used to model the air compressor, combustion chamber, gas turbine, and heat recovery steam generator (HRSG), integrated into a unified system-level framework in Aspen HYSYS (v21.0.4) via a sequential modular, iterative approach. Validation against published GE LM2500+ operational data yielded errors below 1.6% across net power output, thermal efficiency, exhaust temperature, and HRSG steam production. Parametric analysis across biogas-natural gas blend ratios (0-100%) showed that a 50% biogas blend reduced thermal efficiency by 3.3% and power output by 11-12%, while cutting fossil-derived CO2 emissions by nearly 50%. Raising turbine inlet temperature from 1200 K to 1600 K substantially recovered this performance penalty. The validated model provides a practical decision-support tool for optimizing hybrid biogas-natural gas plant design, particularly in biomass-rich, gas-dependent economies such as Nigeria.},
      keywords = {biogas; natural gas; combined-cycle gas turbine; simulation; Aspen HYSYS; thermal efficiency; emissions; model validation},
      month = {September},
      doi = {https://doi.org/10.64388/IREV10I3-1722800}
  }