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<p>This study presents a comprehensive thermal analysis of a solar-assisted gas turbine power plant. The central concept involves integrating parabolic trough collector (PTC) modules upstream of the combustion chamber to reduce naphtha fuel consumption and enhance the system's overall sustainability and efficiency. The analysis begins with the standalone gas turbine system and then progresses to a combined configuration with the solar collectors. A parametric investigation is conducted, with particular focus on pressure losses. Results indicate that the optimal &#xa0;electrical&#xa0;efficiency is achieved at a pressure ratio of 7 to 9 with 20 collectors, 6 to 8 with 40 collectors, and 5 to 7 with 60 collectors&#xa0;in series,&#xa0;regardless of the number of collectors arranged in parallel. Additionally, the system yields a maximum electrical output of approximately in the range of&#xa0;16.5&#xa0;MW&#xa0;to 17 MW at a pressure ratio of 5 to 7&#xa0;for 40 or&#xa0;60 or&#xa0;80 collectors in parallel regardless of the number of collectors arranged in series . The study demonstrates that incorporating solar collectors before the combustion chamber can lead to fuel savings of up to 50%, with only a 2% reduction in electricity production. Finally, a multi-objective optimization approach, based on the Pareto front methodology, is employed to identify the optimal configuration of the solar collector field and pressure ratio for maximizing the performance of the solar-assisted gas turbine power plant.</p>

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Thermal analysis and multi-objective optimization of a naphtha–residual fuel gas-based solar-assisted gas turbine power plant

  • 期刊论文

  • 发表日期：

    2025年11月21日

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  • Swastik Acharya,
  • Sankalp Arpit

摘要

This study presents a comprehensive thermal analysis of a solar-assisted gas turbine power plant. The central concept involves integrating parabolic trough collector (PTC) modules upstream of the combustion chamber to reduce naphtha fuel consumption and enhance the system's overall sustainability and efficiency. The analysis begins with the standalone gas turbine system and then progresses to a combined configuration with the solar collectors. A parametric investigation is conducted, with particular focus on pressure losses. Results indicate that the optimal  electrical efficiency is achieved at a pressure ratio of 7 to 9 with 20 collectors, 6 to 8 with 40 collectors, and 5 to 7 with 60 collectors in series, regardless of the number of collectors arranged in parallel. Additionally, the system yields a maximum electrical output of approximately in the range of 16.5 MW to 17 MW at a pressure ratio of 5 to 7 for 40 or 60 or 80 collectors in parallel regardless of the number of collectors arranged in series . The study demonstrates that incorporating solar collectors before the combustion chamber can lead to fuel savings of up to 50%, with only a 2% reduction in electricity production. Finally, a multi-objective optimization approach, based on the Pareto front methodology, is employed to identify the optimal configuration of the solar collector field and pressure ratio for maximizing the performance of the solar-assisted gas turbine power plant.