• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Fluid flow and mass transfer in an industrial-scale hollow fiber membrane contactor scaled up with small elements
【24h】

Fluid flow and mass transfer in an industrial-scale hollow fiber membrane contactor scaled up with small elements

机译：工业规模的中空纤维膜接触器中的流体流动和传质，按小元素放大

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

Current gas/liquid membrane contactors are classified into tubular hollow fiber contactors and tube-shell cross flow hollow fiber contactors. They are usually built with a closed and integrated structure, which reduces the maintainability of the contactor and makes the scaling-up of the contactor inconvenient. In this paper, a novel gas/liquid hollow fiber membrane contactor is proposed. It is consisted of many changeable and standard small contactors (elements), in which the fibers are randomly packed. These randomly packed small elements are then serially and orderly arranged to form the scaled up contactor for industrial applications. A two-dimensional predictive model is proposed to study the performance of the contactor, which is validated by air humidification experiments. The effects of inter-elements and intra-element flow maldistributions are investigated. Correlations are proposed to estimate the performance of the contactor from the parameters of the elements. It is found that for the contactors built with elements of high packing densities (0.5), the inter-elements effect is dominant for flow maldistribution, but for contactors built with elements of low packing densities (0.35), the collaborative effect of inter-elements and intra-element is dominant. It could maximally decrease the average air side Sherwood numbers by about 83%, with a pressure drop reduction of about 50%. The scaled up contactor has a comparable performance to the small elements when the elements are optimized, which shows the good scalability of this novel contactor. (C) 2018 Elsevier Ltd. All rights reserved.
机译：当前的气/液膜接触器分为管状中空纤维接触器和管壳错流中空纤维接触器。它们通常以封闭且一体的结构来构造，这降低了接触器的可维护性并且使接触器的按比例放大不方便。本文提出了一种新型的气/液中空纤维膜接触器。它由许多可变且标准的小型接触器（元件）组成，其中纤维随机堆积。然后将这些随机包装的小元件依次有序排列，以形成用于工业应用的按比例放大的接触器。提出了一种二维预测模型来研究接触器的性能，并通过空气加湿实验对其进行了验证。研究了元素间和元素内流动不均的影响。提出了相关性以根据元件的参数来估算接触器的性能。结果发现，对于堆积密度高（0.5）的接触器，内部元素效应是流量分布不均的主导因素；对于堆积密度低（0.35）的接触器，其内部元素协同效应元素内占主导。它可以最大程度地降低空气侧平均舍伍德数约83％，而压降下降约50％。当元件被优化时，按比例放大的接触器具有与小型元件相当的性能，这表明了这种新型接触器的良好可扩展性。 （C）2018 Elsevier Ltd.保留所有权利。

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