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<p>In underground mining, ventilation systems account for a significant portion of total power consumption. In this study, axial fans have been considered a primary target for energy-saving strategies. Affinity laws have been applied to analyze the energy-saving potential of axial fan speed reduction in underground mining ventilation systems. Real-time data monitoring was conducted to assess fan performance, energy consumption, and mechanical behaviour. Mathematical models were developed to evaluate the effects of speed reduction on mechanical wear, bearing life, and motor longevity. The results demonstrate that reducing fan speed by 10 and 50% save approximately 30.59 and 97.03&#xa0;kW of power respectively and annual savings range from Rs 368,456 to Rs 2,337,453, depending on operational hours. Additionally, reducing fan speed improves mechanical wear performance, nearly doubles bearing life at 20% speed reduction, and significantly extends motor lifespan. By reducing fan speed using VFDs, substantial energy savings, improved equipment longevity, and lower operational costs can be achieved, contributing to both economic and environmental goals in mining operations. </p>

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Maximizing energy savings in coal mines industrial ventilation: strategies and analysis for power reduction

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年4月30日

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  • Mohd Ahtesham Hussain Siddiqui,
  • Piush Raj,
  • Samshad Ansari,
  • Biplab Das,
  • Ramesh P. Sah,
  • Saurabh Dewangan

摘要

In underground mining, ventilation systems account for a significant portion of total power consumption. In this study, axial fans have been considered a primary target for energy-saving strategies. Affinity laws have been applied to analyze the energy-saving potential of axial fan speed reduction in underground mining ventilation systems. Real-time data monitoring was conducted to assess fan performance, energy consumption, and mechanical behaviour. Mathematical models were developed to evaluate the effects of speed reduction on mechanical wear, bearing life, and motor longevity. The results demonstrate that reducing fan speed by 10 and 50% save approximately 30.59 and 97.03 kW of power respectively and annual savings range from Rs 368,456 to Rs 2,337,453, depending on operational hours. Additionally, reducing fan speed improves mechanical wear performance, nearly doubles bearing life at 20% speed reduction, and significantly extends motor lifespan. By reducing fan speed using VFDs, substantial energy savings, improved equipment longevity, and lower operational costs can be achieved, contributing to both economic and environmental goals in mining operations.