This paper presents the ASHRAE transport properties model for moist air as a "real-gas mixture" employing a modification of the mixing model of Vesovic and Wakeham. It uses the latest research from the International Association for the Properties of Water and Steam (IAPWS), the International Union of Pure and Applied Chemistry (IUPAC), and the National Institute of Standards and Technology (NIST). The modification represents an improvement and consists in an adjustment of the underlying Vesovic-Wakeham model to experimental data in accordance with the composition of the mixture moist air. The model allows the calculation of viscosity and thermal conductivity in the validity range with total pressures from 0.01 kPa to 10 MPa, temperatures from −70 to 300 °C, and humidity ratios from 0 to 10 kg_w/kg_a. The model has been used to generate transport property tables for moist air and for H₂O at saturation states for the Psychrometrics Chapter in the 2021 ASHRAE Handbook Fundamentals. This work summarizes the results of the ASHRAE Research Project 1767 (RP-1767).

本文通过对Vesovic和Wakeham混合模型的修改，提出了ASHRAE湿空气作为“真实气体混合物”的传输特性模型。它使用了国际水和蒸汽特性协会（IAPWS），国际纯粹与应用化学联合会（IUPAC）和美国国家标准与技术研究院（NIST）的最新研究成果。修改表示一种改进，它包括根据混合湿空气的成分将基础Vesovic-Wakeham模型调整为实验数据。该模型可以在有效范围内计算粘度和导热系数，其中总压力为0.01 kPa至10 MPa，温度为-70至300°C，。该模型已被用于生成湿空气和饱和状态下的H ₂ O的传输特性表，以用于《 2021年ASHRAE手册基本原理》的“计量计量学”章节。这项工作总结了ASHRAE研究项目1767（RP-1767）的结果。