对于翅片管传热性能试验，管外气体的对流换热系数一般可通过分离法获得。通常采用的分离方法将翅片热阻视为常数，且不计翅片与基管之间的接触热阻。该文介绍了改进的分离方法，考虑了接触热阻及翅片热阻的变化，通过实例计算，显示了改进的分离方法的具体应用。表１ 参４ For the finned tube heat transfer performance test, the convective heat transfer coefficient of the gas outside the tube can generally be obtained by the separation method. The commonly used separation method considers the thermal resistance of the fin as a constant and does not consider the thermal contact resistance between the fin and the base tube. This paper introduces an improved separation method, taking into account the thermal contact resistance and the thermal resistance of the fin. The practical application of the improved separation method is demonstrated through an example calculation. Table 1 reference 4