Optimal configuration design for plate heat exchangers
Optimal configuration design for plate heat exchangers
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DOI：
10.1016/j.ijheatmasstransfer.2004.06.002
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发表时间：
2004-10
影响因子：
5.2
通讯作者：
J. A. Gut;J. M. Pinto
中科院分区：
文献类型：
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作者：
J. A. Gut;J. M. Pinto
提出了一种筛选板式换热器最优结构的方法。优化问题被制定为传热面积的最小化，受到通道的数量，压降，流速和热效率，以及交换器的热和水力模型的约束。该配置由六个参数定义，其如下：通道数量、每侧上的通过数量、流体位置、进料相对位置和通道流的类型。所提出的方法依赖于一个结构化的搜索过程中的约束连续应用，以消除不可行的和次优的解决方案。该方法还可以用于枚举问题的可行域，因此可以使用任何目标函数。实例表明，筛选方法是能够成功地确定一组最佳的配置与交换器的评价数量非常少。与穷举法相比，需要大约5%的压降和速度计算以及1%的热模拟。一个优化的例子，详细的灵敏度分析，说明筛选方法的应用和性能。
A screening method is presented for selecting optimal configurations for plate heat exchangers. The optimization problem is formulated as the minimization of the heat transfer area, subject to constraints on the number of channels, pressure drops, flow velocities and thermal effectiveness, as well as the exchanger thermal and hydraulic models. The configuration is defined by six parameters, which are as follows: number of channels, numbers of passes on each side, fluid locations, feed relative location and type of channel flow. The proposed method relies on a structured search procedure where the constraints are successively applied to eliminate infeasible and sub-optimal solutions. The method can be also used for enumerating the feasible region of the problem; thus any objective function can be used. Examples show that the screening method is able to successfully determine the set of optimal configurations with a very reduced number of exchanger evaluations. Approximately 5% of the pressure drop and velocity calculations and 1% of the thermal simulations are required when compared to an exhaustive enumeration procedure. An optimization example is presented with a detailed sensitivity analysis that illustrates the application and performance of the screening method.