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The EnPot system was developed over many years of research and plant trials at the Light Metals Research Centre. It uses patented Shell Heat ExchangersHeat exchangers, the airflow through which can be changed to insulate or cool the pot shell, allowing pot heat balanceHeat balance to match varying input conditions. This means the power supply to the smelterSmelter can be flexible by more than ± 20%. This has great benefits for stability of power grids, which are rapidly changing around the world. Supplying this demand side response can create value for the smelterSmelter or allow increased production and capacity creep. This paper features a recent application of the technology on large 440 kA pots, with a detailed investigation into pot dynamics and control, heat balanceHeat balance, and resulting temperatures. The effect of a large sudden change in input power and the measured responses inform how potlines can be best modulated in future.

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Smelter Power Modulation and Heat Balance for High Amperage Aluminium Reduction Cells

  • 会议论文

  • 发表日期：

    2026年

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  • Nick B. Depree,
  • Cui Xizhong,
  • Zhang Wenmu,
  • Yashuang Gao,
  • Mark P. Taylor

摘要

The EnPot system was developed over many years of research and plant trials at the Light Metals Research Centre. It uses patented Shell Heat ExchangersHeat exchangers, the airflow through which can be changed to insulate or cool the pot shell, allowing pot heat balanceHeat balance to match varying input conditions. This means the power supply to the smelterSmelter can be flexible by more than ± 20%. This has great benefits for stability of power grids, which are rapidly changing around the world. Supplying this demand side response can create value for the smelterSmelter or allow increased production and capacity creep. This paper features a recent application of the technology on large 440 kA pots, with a detailed investigation into pot dynamics and control, heat balanceHeat balance, and resulting temperatures. The effect of a large sudden change in input power and the measured responses inform how potlines can be best modulated in future.