• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy Conversion & Management >Proof of concept to recover thermal wastes from aluminum electrolysis cells using Stirling engines
【24h】

Proof of concept to recover thermal wastes from aluminum electrolysis cells using Stirling engines

机译：使用斯特林发动机从铝电解槽回收热废料的概念证明

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The production of aluminum is a low energy-efficient industrial process. In fact, almost half of its energy demand is lost under the form of heat along the production line. For this reason, aluminum producers are interested in improving energy efficiency of their smelters by recovering the thermal losses. It is well known that a significant loss of energy occurs across the sidewalls of the electrolysis cells. This paper proposes a proof of concepts where the sidewall thermal wastes are used to drive Low Temperature Differential (LTD) Stirling engines. To estimate the losses, a heat transfer study is implemented; heat conduction coupled with mixed convection and radiation is evaluated by using the OpenFOAM Computational Fluid Dynamic (CFD) software. Then, a parametric study is performed to analyse cell working conditions under which thermal wastes could be recovered. The heat flux and the temperature of the thermal wastes are used to judge the utilization of possible Stirling engine technologies. Two scenarios are studied: (i) a plane heat collector coupled to the radiative sidewall and (ii) a plane heat collector in direct thermal contact with the cell sidewall. It is demonstrated that the recovery of the wastes by radiation is technically feasible and it does not threaten the safety of the smelter; furthermore, the losses can power some Stirling engines given in the open literature. Therefore, the recovery of the radiative wastes and the further conversion by means of the Stirling engine is an interesting solution to improve the aluminium smelter energy efficiency.
机译：铝的生产是低能效的工业过程。实际上，其几乎一半的能源需求以生产线的热量形式损失。因此，铝生产商对通过回收热损失来提高冶炼厂的能效感兴趣。众所周知，在电解池的侧壁上会发生明显的能量损失。本文提出了一种概念证明，其中侧壁热废料用于驱动低温差动（LTD）斯特林发动机。为了估算损失，进行了传热研究。通过使用OpenFOAM计算流体动力学（CFD）软件评估与混合对流和辐射耦合的热传导。然后，进行参数研究以分析可回收热废料的电池工作条件。热废料的热通量和温度用于判断可能的斯特林发动机技术的利用率。研究了两种情况：（i）与辐射侧壁耦合的平面集热器，以及（ii）与电池侧壁直接热接触的平面集热器。事实证明，通过辐射回收废物在技术上是可行的，并且不会威胁到冶炼厂的安全。此外，这些损失可以为公开文献中提供的某些斯特林发动机提供动力。因此，利用斯特林发动机回收辐射废料并进一步转化是提高铝冶炼厂能效的有趣解决方案。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号