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研究了强制对流条件下，非共沸混合工质Ｒ１１／Ｒ１１３在三排水平直列光滑管及花瓣形翅片管束外的冷凝传热。实验结果表明：花瓣形翅片管由于具有特殊的三维翅片结构，既能激发流动的蒸气产生强烈地湍流，减小其气膜热阻，又能充分发挥冷凝液表面张力的作用，减少其液膜热阻，从而显著地强化了非共沸混合工质在管束外的冷凝传热。在相同热流率下，其管束平均冷凝传热系数是光滑管管束的３～５倍。
Condensation heat transfer of non-azeotropic mixtures R11 / R113 in three rows of horizontal smooth tubes and petal-shaped finned tube bundles under forced convection conditions was studied. The experimental results show that, as a result of the special three-dimensional fin structure, the petal-shaped finned tube can not only stimulate the flowing steam to generate strong turbulence, reduce the thermal resistance of the film, but also fully exert the surface tension of the condensate to reduce its Liquid film thermal resistance, which significantly enhanced the non-azeotropic mixed refrigerant outside the tube bundle condensation heat transfer. Under the same heat flow rate, the average condensation heat transfer coefficient of the bundle is 3 to 5 times that of the smooth tube bundle.