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<p>This study examines the integration of solar thermal energy into a 300&#xa0;MW unit of a 1200&#xa0;MW coal-fired power plant to enhance efficiency and mitigate environmental impact. Parabolic Trough Collectors are used to harness solar energy, which is then utilized to preheat the boiler feedwater. This process reduces the need for extraction steam, allowing more steam to be used for power generation, thereby decreasing coal consumption and associated emissions. Pollutants from coal-fired plants—including sulfur oxides (SOx), nitrogen oxides (NOx), carbon oxides (COx), particulate matter, and heavy metals—pose significant health and environmental hazards. The proposed hybrid system offers a sustainable alternative that eliminates the need to replace coal infrastructure fully. Modeling and simulation of the proposed system are carried out using the System Advisory Model, Engineering Equation Solver, and MATLAB to analyze performance in both conventional and hybrid scenarios. Simulation results show that with a Parabolic Trough Collector field of 126,440 m<sup>2</sup>, approximately 88 tons of coal can be saved daily. In fuel-saving mode, the annual reductions in coal consumption and CO₂ emissions are approximately 32,236 tons and 67,696 tons, respectively. The economic analysis indicates a payback period of 8.7&#xa0;years using standard PTCs, which can be reduced to about 4.1&#xa0;years with advanced systems. The study presented in this article demonstrates that solar coal hybrid power generation is technically and economically feasible in the Indian climate. It offers a solution to reduce emissions and increase energy sustainability without entirely replacing current coal-based infrastructure.</p>

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Performance and emission assessment of a solar-assisted coal power plant using parabolic trough collectors in Indian conditions

  • 期刊论文

  • 发表日期：

    2025年11月20日

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  • Satish N. Ghorpade,
  • P. Goswami,
  • R. S. N. Sahai

摘要

This study examines the integration of solar thermal energy into a 300 MW unit of a 1200 MW coal-fired power plant to enhance efficiency and mitigate environmental impact. Parabolic Trough Collectors are used to harness solar energy, which is then utilized to preheat the boiler feedwater. This process reduces the need for extraction steam, allowing more steam to be used for power generation, thereby decreasing coal consumption and associated emissions. Pollutants from coal-fired plants—including sulfur oxides (SOx), nitrogen oxides (NOx), carbon oxides (COx), particulate matter, and heavy metals—pose significant health and environmental hazards. The proposed hybrid system offers a sustainable alternative that eliminates the need to replace coal infrastructure fully. Modeling and simulation of the proposed system are carried out using the System Advisory Model, Engineering Equation Solver, and MATLAB to analyze performance in both conventional and hybrid scenarios. Simulation results show that with a Parabolic Trough Collector field of 126,440 m2, approximately 88 tons of coal can be saved daily. In fuel-saving mode, the annual reductions in coal consumption and CO₂ emissions are approximately 32,236 tons and 67,696 tons, respectively. The economic analysis indicates a payback period of 8.7 years using standard PTCs, which can be reduced to about 4.1 years with advanced systems. The study presented in this article demonstrates that solar coal hybrid power generation is technically and economically feasible in the Indian climate. It offers a solution to reduce emissions and increase energy sustainability without entirely replacing current coal-based infrastructure.