In this research, the primary emphasis is placed on conducting experimental viscosity measurements of CF₃I and subsequently developing empirical models using the obtained data to facilitate engineering system design calculations. Recognized for its non-explosive, low toxicity characteristics, and negligible contributions to ozone depletion and global warming, CF₃I is identified as a promising candidate of a component for next-generation refrigerant mixtures. This potential arises from its advantageous thermodynamic properties, including a low boiling point and high critical temperature, making it a noteworthy component in refrigerant mixtures. The research employs the tandem capillary tube method to measure the viscosity of CF₃I in both liquid and vapor phases. This approach, involving the series arrangement of two capillary tubes, is designed to neutralize the effects of the tubes, facilitating accurate viscosity measurement. Experimental data were collected at temperatures between 333 K and 374 K for the liquid phase and 333 K to 394 K for the vapor phase, under pressures ranging from 1.0 MPa to 4.0 MPa. Expanded uncertainties associated with these measurements were 2.22 % and 2.32 % for the liquid and vapor phases, respectively. Furthermore, the collected data were used to develop viscosity models for CF₃I using the Extended Corresponding States and the modified Residual Entropy Scaling methods, effectively encapsulating the experimental findings within the calculated uncertainty limits. These models will also be useful for predicting the viscosity of any mixture refrigerant where CF₃I is a constituent component.

在这项研究中，主要重点是进行 CF ₃ I 的实验粘度测量，并随后使用获得的数据开发经验模型，以促进工程系统设计计算。 CF ₃ I因其非爆炸性、低毒性的特性以及对臭氧消耗和全球变暖的影响可以忽略不计，被认为是下一代制冷剂混合物的有前途的候选成分。这种潜力源于其有利的热力学特性，包括低沸点和高临界温度，使其成为制冷剂混合物中值得注意的成分。该研究采用串联毛细管法测量CF ₃ I在液相和气相中的粘度。这种方法涉及两个毛细管的串联布置，旨在抵消毛细管的影响，从而促进精确的粘度测量。实验数据是在 333 K 至 374 K 的液相温度和 333 K 至 394 K 的气相温度、1.0 MPa 至 4.0 MPa 的压力下收集的。与这些测量相关的扩展不确定度对于液相和气相分别为 2.22% 和 2.32%。此外，收集的数据用于使用扩展对应态和改进的残余熵标度方法开发 CF _{3 I 的粘度模型，有效地将实验结果封装在计算的不确定性限制内。这些模型还可用于预测以 CF 3} I 为组成成分的任何混合物制冷剂的粘度。