Examinations of steady status and analysis of dynamic experiments have been conducted on band - tube evaporator and parallel - flow condenser using r134a refrigerant . the steady examination show that the model error was under the allowable error , the inlet mass and enthalpy disturb experiments indicate that the subsection model , be good at reflecting the change of parameters of the heat exchanger , accord with the basic principle of thermodynamics theory and the actual work status . hence , the subsection simulation model research has important benefits both on theory and engineering application 在进行仿真试验时,以使用r134a作制冷剂的管带式蒸发器和平行流式冷凝器为对象,完成了稳态仿真计算、试验和动态仿真分析,稳态计算结果和试验数据对比表明,其误差在允许范围内;进口质量和焓值的扰动试验结果表明:本文所建的区段式换热器仿真模型,能很好的反映换热器性能参数的动态变化,与系统热动力学理论和冷凝器、蒸发器的实际工作过程基本一致。