This research is focused on the experimental measurement of the thermal conductivity of CF₃I and the subsequent development of empirical models, which are integral to engineering system design calculations. CF₃I is identified as a potential key component in the formulation of future refrigerant mixtures, owing to its non-explosive nature, low toxicity, and minimal contribution to ozone layer depletion and global warming. Its applicability is further reinforced by its advantageous thermodynamic properties, including a low boiling point and a high critical temperature, making it a vital constituent in refrigerant mixtures. The study employs the well-established transient hot-wire method to measure the thermal conductivity of CF₃I in both its liquid and vapor phases. This method is characterized by the sequential arrangement of two platinum wires which are linked in parallel to nullify any impacts from axial heat conduction. Experimental data were methodically gathered across a range of temperatures, spanning from 311 K to 374 K for the liquid phase and from 312 K to 394 K for the vapor phase, under varying pressures from 1.5 MPa to 4.0 MPa and 0.5 MPa to 3.0 MPa, respectively. The combined uncertainties associated with these measurements were meticulously calculated, amounting to 1.8% for the liquid phase and 2.0% for the vapor phase. Furthermore, the research advanced to the development of thermal conductivity models for CF₃I, employing both the Extended Corresponding States method and the modified Residual Entropy Scaling method. These models effectively encapsulate the empirical findings, fitting within the established uncertainty limits with reasonable extrapolating behavior. Critically, these models are expected to play a pivotal role in predicting the thermal conductivity of refrigerant mixtures that incorporate CF₃I as a component, marking a significant contribution to the field of refrigerant technology.

_{本研究的重点是CF 3} I导热系数的实验测量以及随后的经验模型的开发，这些模型是工程系统设计计算中不可或缺的一部分。 CF ₃ I 因其非爆炸性、低毒性以及对臭氧层消耗和全球变暖的影响最小而被认为是未来制冷剂混合物配方中的潜在关键成分。其有利的热力学特性（包括低沸点和高临界温度）进一步增强了其适用性，使其成为制冷剂混合物的重要组成部分。该研究采用成熟的瞬态热线法来测量 CF ₃ I 在液相和气相的导热系数。该方法的特点是按顺序排列两根平行连接的铂丝，以消除轴向热传导的影响。实验数据是在从 311 K 到 374 K（液相）和 312 K 到 394 K（气相）的温度范围内，在 1.5 MPa 到 4.0 MPa 和 0.5 MPa 到 3.0 MPa 的不同压力下系统收集的。分别。与这些测量相关的综合不确定性经过仔细计算，液相为 1.8%，气相为 2.0%。此外，该研究还采用扩展对应态法和改进的残余熵标度法开发了 CF ₃ I 的热导率模型。这些模型有效地概括了经验发现，通过合理的外推行为拟合既定的不确定性限制。至关重要的是，这些模型预计将在预测以 CF ₃ I 作为组分的制冷剂混合物的导热率方面发挥关键作用，这标志着对制冷剂技术领域的重大贡献。