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摘 要： 在自复叠制冷循环中，经过大量的实验测试，发现在实验中存在气液分离器液体温度偏低、蒸发器换热系数过小以及蒸发器制冷量过小，但仍能循环等特殊的现象，这些现象较难解释。针对这些现象和实验数据，进行了详细的描述，并给出了初步的分析与推测。 关键词： 自复叠实验 特殊现象 分析 The discussion of special phenomena in auto-cascade refrigeration cycle test Wu Xiao Liu Jinping Xu Xiongwen Guo Lingbing School of Electric Power, South China University of Technology , Guangzhou 510640,，Guangdong，China； Abstract ：Based on a lot of experiments in the auto-cascade refrigerate system, some special phenomena could not be explained easily. Such as the temperature of liquid is lower than that of mixing refrigerants in the gas-liquid separator, the heat transfer coefficient of evaporator is very much smaller than normal results. The cooling capacity of evaporator is very small, but mixing refrigerants still circulate in auto-cascade refrigeration cycle. These phenomena and the corresponding experimental data were described detailed, primary analysis were proposed. Keywords ：auto-cascade experiment special phenomena analysis