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<p>The reliable operation and longevity of electrical panels depend on effective thermal management. While common solutions like open-cycle fans provide cooling, they leave internal components vulnerable to dust and other contaminants. To address this, we developed a novel closed-cycle system that combines a U-shaped duct, an internal fan, and a strategic array of thermosiphons. This integrated design creates a self-contained airflow that actively extracts heat while fully sealing the panel from the external environment. Through both experimental testing and CFD analysis, we show that this hybrid solution achieves a remarkably even temperature profile and eliminates dangerous hot spots. Crucially, the system reduces the peak equipment temperature from 117&#xa0;°C to just 42&#xa0;°C, ensuring all components operate safely within the manufacturer’s limits. This thermal control extends equipment lifetime by up to 23 times for critical components, providing a robust, energy-efficient solution ready for industrial application.</p>

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A hybrid air-thermosiphon cooling system for thermal management of sealed electrical panels

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月5日

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  • Vahid Abdi,
  • Jafar Jamaati,
  • Farzad Veysi

摘要

The reliable operation and longevity of electrical panels depend on effective thermal management. While common solutions like open-cycle fans provide cooling, they leave internal components vulnerable to dust and other contaminants. To address this, we developed a novel closed-cycle system that combines a U-shaped duct, an internal fan, and a strategic array of thermosiphons. This integrated design creates a self-contained airflow that actively extracts heat while fully sealing the panel from the external environment. Through both experimental testing and CFD analysis, we show that this hybrid solution achieves a remarkably even temperature profile and eliminates dangerous hot spots. Crucially, the system reduces the peak equipment temperature from 117 °C to just 42 °C, ensuring all components operate safely within the manufacturer’s limits. This thermal control extends equipment lifetime by up to 23 times for critical components, providing a robust, energy-efficient solution ready for industrial application.