Design optimisation of multi-stream plate fin heat exchangers with multiple fin types
Design optimisation of multi-stream plate fin heat exchangers with multiple fin types
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DOI：
10.1016/j.applthermaleng.2017.11.099
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发表时间：
2018-02
影响因子：
6.4
通讯作者：
Kunpeng Guo;N. Zhang;Robin Smith
中科院分区：
文献类型：
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作者：
Kunpeng Guo;N. Zhang;Robin Smith
对于多股流板翅式换热器的设计，需要考虑翅片类别和翅片类型的详细几何形状的最佳组合。由于多股流板翅片换热器设计问题的复杂性，现有技术的一个主要局限性是缺乏一种通用的设计方法，既能考虑混合匹配的翅片类型选择，又能同时施加约束以利用不同的翅片特性。在这项工作中，提出了一种新的设计方法，以考虑混合和匹配翅片类型的可能性。多股流板翅式混配式换热器被视为一个由两股流板翅式换热器组成的网络。将混合整数非线性规划(MINLP)模型转化为非线性规划(NLP)模型，并结合剩余几个二元变量的枚举法进行求解。目标是将总资本成本降至最低。通过实例研究验证了新提出的设计方法的有效性，并展示了混合匹配翅片类型组合在总体设计方法中的好处。
For multi-stream plate fin heat exchanger design, one needs to consider the optimal combination of fin categories and detailed geometries of fin types. Due to the complexity of the design problem for multi-stream plate fin heat exchangers, a major limitation of existing technology is the lack of a general design methodology that can consider mix-and-match fin type selection and imposed constraints simultaneously to take advantage of different fin characteristics. In this work, a new design method is proposed to consider the possibility of mix-and-match fin types. Multi-stream plate fin heat exchangers with mix-and-match fin types is considered as a network of two-stream plate fin heat exchangers. A mixed integer nonlinear programming (MINLP) model is converted into a nonlinear programming (NLP) model, and solved in combination of enumeration for a few remaining binary variables. The objective is to minimise the total capital cost. Case studies are carried out to validate the effectiveness of new proposed design methodology and demonstrate the benefits of mix-and-match fin type combinations in the overall design methodology.