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<p>This study investigates waste heat recovery in an industrial setting using the ORC to generate electricity. The ORC system, using different organic fluids (R1234yf, R423A, R450A, R515A, and R161), converts low-temperature waste heat (averaging 120&#xa0;°C) into electrical energy. Analysis shows that increasing both temperature and pressure ratio enhances power output and exergy efficiency across all fluids, with R1234yf, R423A, and R515A yielding higher efficiencies. However, R161 demonstrates lower efficiency and higher exergy destruction, making it less suitable for effective energy recovery. The study also evaluates economic and sustainability aspects, revealing that higher waste heat temperatures and pressure ratios reduce electricity generation costs, with R1234yf and R515A emerging as cost-effective choices. R515A achieves the highest exergy sustainability index (ESI), whereas R161 scores lower, indicating reduced sustainability. A Taguchi analysis highlights waste heat temperature and pressure ratio as primary factors affecting system performance, with fluid type and turbine efficiency showing limited impact. The findings support ORC as a valuable solution for sustainable energy recovery from low-grade industrial waste heat, emphasizing the importance of optimal temperature and pressure management for enhanced efficiency.</p>

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Evaluation of thermodynamic analysis of low-temperature operating organic Rankine cycle (ORC) system using Taguchi method

  • 期刊论文

  • 发表日期：

    2026年1月7日

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  • Sertac Samed Seyitoglu

摘要

This study investigates waste heat recovery in an industrial setting using the ORC to generate electricity. The ORC system, using different organic fluids (R1234yf, R423A, R450A, R515A, and R161), converts low-temperature waste heat (averaging 120 °C) into electrical energy. Analysis shows that increasing both temperature and pressure ratio enhances power output and exergy efficiency across all fluids, with R1234yf, R423A, and R515A yielding higher efficiencies. However, R161 demonstrates lower efficiency and higher exergy destruction, making it less suitable for effective energy recovery. The study also evaluates economic and sustainability aspects, revealing that higher waste heat temperatures and pressure ratios reduce electricity generation costs, with R1234yf and R515A emerging as cost-effective choices. R515A achieves the highest exergy sustainability index (ESI), whereas R161 scores lower, indicating reduced sustainability. A Taguchi analysis highlights waste heat temperature and pressure ratio as primary factors affecting system performance, with fluid type and turbine efficiency showing limited impact. The findings support ORC as a valuable solution for sustainable energy recovery from low-grade industrial waste heat, emphasizing the importance of optimal temperature and pressure management for enhanced efficiency.