Abstract: The optimal design for multi-stream plate-fin heat exchanger with differential model was investigated. An effective method for the passage arrangement was presented, together with the corresponding calculation program. With this program, many conditions with different initial lengths and slice thicknesses were calculated. From the calculation results,the initial length almost had no effect on the final divergent length, but the slice thickness had great influence on the final result. A numerical example shows the feasibility and effectiveness of the proposed method.

Key words:

多股流板翅式换热器, 微分计算模型, 通道排列, 数值研究

摘要： 采用微分计算模型对多股流板翅式换热器的优化设计问题进行了研究，提供了一种有效的通道排列方法，并编制出了相应的计算程序.利用该程序，对不同初始长度和不同片厚的多种情况进行了计算.计算结果发现，换热器初始长度对最终的收敛长度没有影响，但片厚对计算结果的影响较大.通过一个数值计算实例验证了上述方法的可行性和有效性.

关键词:

多股流板翅式换热器, 微分计算模型, 通道排列, 数值研究