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科学通报  2011 

换热器优化设计的最小火积耗散方法

, PP. 869-873

Keywords: 火积耗散,管壳式换热器,优化设计

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Abstract:

以水-水换热的平衡逆流换热器为例,把火积耗散理论应用于换热器的优化设计.在一定的假设条件下,得到了换热器的最佳长径比的解析表达式;在给定换热面积或换热管体积的约束条件下,获得了最佳质量速度和最小火积耗散率的解析表达式.这些结果表明,为了减少换热器中的不可逆耗散,在允许的条件下应尽量增大换热面积,降低流速.

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