之前还没有关于冷冻油混合物局部传热系数的研究。描述了一项研究，以获得R12和150 SUS环烷油混合物在微细管内蒸发期间的局部传热系数，并将结果与无油条件下的结果进行比较。描述了实验方案。介绍并讨论结果。研究发现，一般而言，与纯制冷剂情况相比，在大多数质量范围内，除低质量外，添加机油会显著恶化局部传热性能。关键词:传热系数、热流、制冷剂、R12、润滑剂、混合物、油、传热液、管道、蒸发、粘度、性能、变质、空调、制冷、蒸发器、比较。引用: 研讨会，ASHRAE Transactions 1993，第99卷，pt。1.

No previous study has been found on the local heat transfer coefficients with refrigerant-oil mixtures. Describes a study to obtain local heat transfer coefficients during evaporation of mixtures of R12 and 150 SUS naphthenic oil inside a microfin tube and to compare the results with the results of the oil-free condition. Describes the experimental programme. Presents and discusses the results. Finds that in general, compared to the pure refrigerant case, the addition of oil dramatically deteriorates the local heat transfer performance for most of the quality range, except at low quality.KEYWORDS: heat transfer coefficient, heat flow, refrigerants, R12, lubricants, mixtures, oils, heat transfer fluids, tubes, evaporation, viscosity, performance, deteriorating, air conditioning, refrigeration, evaporators, comparing.