前言 随着世界性的能源短缺,必然对各种热设备的性能设计的要求愈来愈高。例如,对于叉流换热器的热分析,过去总是假定来流进口温度是均匀的以便于分析和计算。实际上,来流温度的不均匀对叉流换热器的热性能是有影响的,在某些情况下,此影响是不能忽略的。如Bentwich分析了多通道逆流式换热器进口温度不均匀对有效度的影响。Chiou以单程、两边均不混合叉流换热器为例,沿用与来流温度均匀时相同的概念 Preface With the global energy shortage, the performance design requirements of various thermal equipment are bound to be higher and higher. For example, for the thermal analysis of a cross-flow heat exchanger, it was always assumed in the past that the inlet inlet temperature was uniform for analysis and calculation. In fact, the non-uniform temperature of the incoming stream has an impact on the thermal performance of the cross-flow heat exchanger, which in some cases can not be ignored. Bentwich, for example, analyzed the effect of inhomogeneous inlet temperature of multi-channel countercurrent heat exchangers on the validity. Chiou takes the one-way, cross-flow heat exchanger on both sides as an example, following the same concept as when the temperature of the incoming stream is uniform