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建立了可进行两股及多股流换热器动态特性试验研究的装置．对一．个两股流板翅式换热器施加流量按阶跃变化、进口温度按指数函数变化的时间域扰动信号，进行了动态试验．得到了换热器动态模型对流量扰动可接线性建模的扰动范围，确定了各股流体对进口温度扰动的响应延滞时间的计算公式．对换热器进行了一系列的动态特性测试，并获得其动态响应过程曲线．试验工况的传热单元数范围为０．６～３，雷诺数为２００～２０００，普朗特数为２～７．试验数据为建立完善的理论模型提供了可对比的依据．
A device that can test the dynamic characteristics of two-strand and multi-flow heat exchangers is established. To one. A two-flow plate-fin heat exchanger applied flow step by step, the inlet temperature changes exponentially in time domain disturbance signal, a dynamic test. Obtained the heat exchanger dynamic model of the flow disturbance can be connected linear modeling of the disturbance range, determine the various fluids on the inlet temperature disturbance response lag time calculation formula. A series of dynamic characteristics tests have been performed on the heat exchanger and their dynamic response curves have been obtained. The number of heat transfer units in the test conditions ranged from 0.6 to 3, Reynolds number was 200 to 2000, and Prandtl number was 2 to 7. The experimental data provide a comparative basis for the establishment of a sound theoretical model.