尽管蒸汽压缩制冷系统中的制冷剂总是含有一些润滑油，制冷行业对管内强化传热的使用表现出越来越大的兴趣，但还没有研究油对强化管内两相传热和压降的影响。这种知识的缺乏导致了目前的研究。文献综述强调了油对光滑管内蒸发和冷凝的影响，以及强化管内纯制冷剂蒸发和冷凝的影响。 还回顾了有关冷冻油混合物性质的论文；冷媒油混合物的池沸腾、蒸汽空间冷凝和绝热输送；以及过去关于光滑管和强化管中纯制冷剂和冷冻油混合物的传热和压降的关联式。

Although the refrigerant in vapor compression refrigeration systems always contains some lubricating oil, and the refrigeration industry shows a growing interest in the use ofin-tube heat transfer augmentation, there has been no research into the effects of oil on the two-phase heat transfer and pressure drop inside augmented tubes. This lack of knowledge has led to the current research.A review of the literature emphasized the effects of oil on evaporation and condensation inside smooth tubes and pure refrigerant evaporation and condensation inside augmented tubes. Also reviewed were papers dealing with properties of refrigerant-oil mixtures; pool boiling, vapor space condensation, and adiabatic transport of refrigerant-oil mixtures; and past correlations for heat transfer and pressure drop of pure refrigerant and refrigerant-oil mixtures in smooth and augmented tubes.