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首页> 外文期刊>International Journal of Heat Exchangers >Plate Fin Heat Exchanger Network Retrofit Procedure
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Plate Fin Heat Exchanger Network Retrofit Procedure

机译：板翅式换热器网络改造程序

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摘要

The paper describes a retrofit procedure for plate fin heat exchanger networks. The advantages of compact heat exchangers over the industry's workhorse, shell-and-tube exchangers, make them an attractive option when carrying out process plant design. The economic benefits of their application are tangible already at the unit level, but they can be even more effective at the overall network level. However, the lack of systematic design methods and virtually no published retrofit methods for compact heat exchanger networks impede the wider use of this type of technology. As to retrofit methods, the need for them becomes even more obvious if we bear in mind that the vast majority of projects currently being carried out deal with retrofit of existing plants, rather than grassroots design cases. The retrofit procedure gains insights from a grassroots design method that has recently been developed and applies a retrofit matrix approach to obtain volume distribution for new operating conditions. The procedure applies two sets of heat transfer conditions for existing and additional volumes. New volume heat transfer conditions are optimised during the procedure, so there is no need to use pre-assumed coefficients, as it is the case with previous design and retrofit methods. The procedure also takes into account pressure drop considerations.
机译：本文介绍了板翅式换热器网络的改造程序。紧凑型换热器优于行业主力，管壳式换热器，使其在进行加工厂设计时成为有吸引力的选择。应用它们的经济利益已经在单位级别上体现出来了，但是它们在整个网络级别上甚至更加有效。但是，由于缺乏系统的设计方法，而且几乎没有已发布的紧凑型换热器网络改造方法，阻碍了这种技术的广泛应用。关于改造方法，如果我们牢记当前正在执行的绝大多数项目都涉及现有工厂的改造，而不是基层设计案例，那么对改造方法的需求就变得更加明显。改造程序从最近开发的基层设计方法中获得了见识，并采用了改造矩阵方法来获得新运行条件下的体积分布。该程序对现有和其他体积应用了两组传热条件。在此过程中，优化了新的体积传热条件，因此无需使用预先设定的系数，就像以前的设计和改造方法一样。该程序还考虑了压降因素。

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