• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Cooling technology institute annual conference >THERMAL PERFORMANCE OF COOLING TOWER FILLS - EXPERIMENTAL INVESTIGATION
【24h】

THERMAL PERFORMANCE OF COOLING TOWER FILLS - EXPERIMENTAL INVESTIGATION

机译：冷却塔填料的热性能-实验研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The majority of the 15 coal fired power stations operated by Eskom, South Africa's power utility, are cooled by means of natural draft wet cooling towers. In these cooling towers asbestos cement is used as material for the fill packing and water distribution piping. Eskom has committed to phase out all asbestos material in next few years, which will greatly impact the operation of a significant amount of cooling towers built with asbestos materials. The question arises as to what materials and fill types are best suited to replace the asbestos cement fill which will have adequate, but also sustained thermal performance given the cooling water chemistry at these power stations. Presently fill performance characteristics are provided by the fill manufacturer, which is generally tested in-house, in proprietary test facilities. This makes comparison between fills from different suppliers difficult. Furthermore, there is limited published information available regarding the testing standards of cooling tower fill media and the effect of test facility design / configurations. The counter flow fill test facility at the Department of Mechanical and Mechatronic Engineering of Stellenbosch University, South Africa, is a well-known independent test facility. The fill test facility has been used for research and commercial testing, including various fill performance tests for Eskom, since 1988. The paper will focus on the development of Eskom's new standardized fill test facility with which various fill materials can be tested and compared, using the Stellenbosch University test facility as a basis. Details regarding the fill performance testing methodology, using the Merkel theory as analysis basis, for the standardized test facility are also presented. Finally, the test results of a reference fill are presented in terms of the air-side pressure drop and thermal performance as obtained from tests performed in both test facilities.
机译：南非电力公司埃斯科姆（Eskom）运营的15个燃煤电站中的大多数都通过自然通风湿式冷却塔进行冷却。在这些冷却塔中，石棉水泥用作填充填料和水分配管道的材料。 Eskom承诺在未来几年内逐步淘汰所有石棉材料，这将极大地影响使用石棉材料建造的大量冷却塔的运行。出现了一个问题，即哪种材料和填充物类型最适合替代石棉水泥填充物，考虑到这些电站的冷却水化学性质，它们将具有足够但持续的热性能。目前，灌装性能特征是由灌装制造商提供的，通常在内部的专有测试设施中对其进行测试。这使得不同供应商的填充物之间的比较变得困难。此外，关于冷却塔填充介质的测试标准以及测试设施设计/配置的影响的可用公开信息有限。南非斯泰伦博斯大学机械与机电工程系的逆流填充测试设备是著名的独立测试设备。自1988年以来，填充测试设备已用于研究和商业测试，包括Eskom的各种填充性能测试。本文将重点研究Eskom新型标准化填充测试设备的开发，可以使用该设备对各种填充材料进行测试和比较。以斯泰伦博斯大学的测试设施为基础。还介绍了使用默克尔理论作为分析基础的，用于标准化测试设备的填充性能测试方法的详细信息。最后，参考充气的测试结果以空气侧的压降和热性能表示，这是从两个测试设施中进行的测试得出的。

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