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首页> 外文期刊>Journal of natural gas science and engineering >Use of sophisticated heat exchanger simulation models for investigation of possible design and operational pitfalls in LNG processes
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Use of sophisticated heat exchanger simulation models for investigation of possible design and operational pitfalls in LNG processes

机译：使用复杂的换热器仿真模型调查LNG工艺中可能的设计和操作隐患

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The simulation rating programs S-FIN for PFHE and S-PLATE for PHE have been developed at SINTEF Energy Research. These tools can be incorporated in process simulation environments like PRO/II and Aspen HYSYS~R, and thus be used as an integrated part when doing process energy simulation and optimization.Static flow instabilities that can occur in heat exchangers used in cryogenic services are discussed.Examples on how to perform, and how to interpret, a Ledinegg instability analysis, are shown using the developed programs.With the well-known single mixed refrigerant process as a case study, a thermally valid plate-fin heat exchanger was designed that was subjected to Ledinegg instability. Remedies to avoid this and the effect on the process energy consumption are discussed. For the selected case, the compressor power increased by 14% going from an unstable to a stable design/operation.The examples show that detailed heat exchanger simulations should be performed as a part of process optimization.
机译：SINTEF Energy Research已开发了用于PFHE的仿真评级程序S-FIN和用于PHE的S-PLATE。这些工具可以集成到PRO / II和Aspen HYSYS〜R等过程仿真环境中，因此可以在进行过程能量仿真和优化时用作集成部分。讨论了低温服务热交换器中可能发生的静态流量不稳定性使用已开发的程序显示了有关执行Ledinegg不稳定性分析的方法和方法的示例。以众所周知的单一混合制冷剂工艺为案例研究，设计了一种热有效的板翅式热交换器遭受莱迪涅格不稳定。讨论了避免这种情况的补救措施以及对过程能耗的影响。对于选定的情况，从不稳定的设计/运行到稳定的设计/运行，压缩机的功率增加了14％。这些示例表明，应在过程优化中执行详细的热交换器模拟。

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