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Choosing When to Clean and How to Clean Biofilms in Heat Exchangers

机译：选择何时清洁以及如何清洁热交换器中的生物膜

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摘要

Biofouling in heat exchangers can be managed by regular cleaning. A mathematical framework for the optimization problem involved in selecting the best cleaning schedules for such units is presented that considers (ⅰ) an induction period associated with conditioning and colonization, which introduces complexity to the fouling kinetics, and (ⅱ) the existence of several outcomes from cleaning, depending on the choice of cleaning method. The problem is to decide how, when, and which exchanger to clean. A mixed integer nonlinear programming approach, based on the use of a logistic function to model fouling resistance-time dynamics, is shown to give tractable results. The methodology is illustrated with a case study involving a small network of three heat exchangers. An optimized solution based on a cost/performance analysis shows that the cleaning intervals and cleaning methods differ for each exchanger.
机译：热交换器中的生物污垢可以通过定期清洁进行管理。提出了针对此类设备选择最佳清洁时间表的最优化问题的数学框架，该框架考虑了（ⅰ）与调节和定植相关的诱导期，这给结垢动力学带来了复杂性，以及（ⅱ）存在几种结果清洁，具体取决于清洁方法的选择。问题在于决定如何，何时以及清洁哪个交换器。一种混合整数非线性规划方法，基于使用逻辑函数建模抗污垢时间动态模型，显示出易于处理的结果。通过涉及三个热交换器的小型网络的案例研究说明了该方法。基于成本/性能分析的优化解决方案表明，每个交换器的清洗间隔和清洗方法不同。

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  • 来源
    《Heat Transfer Engineering》 |2015年第8期|676-684|共9页
  • 作者

    THOMAS A. POGIATZIS; VASSILIS S. VASSILIADIS; FILIPE J. MERGULHAO; D. IAN WILSON;

  • 作者单位

    Department of Chemical Engineering and Biotechnology, New Museums Site, Pembroke Street, Cambridge, United Kingdom;

    Department of Chemical Engineering and Biotechnology, New Museums Site, Pembroke Street, Cambridge, United Kingdom;

    LEPABE-Department of Chemical Engineering, University of Porto, Porto, Portugal;

    Department of Chemical Engineering and Biotechnology, New Museums Site, Pembroke Street, Cambridge CB2 3RA, UK;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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