Evaluation of Mass Accommodation Coefficients of Water over a Wide Temperature Range and Determination of Diffusion Coefficient of Water in Nitrogen
Evaluation of Mass Accommodation Coefficients of Water over a Wide Temperature Range and Determination of Diffusion Coefficient of Water in Nitrogen
复制标题
宽温度范围内水的质量调节系数的评估和水在氮中扩散系数的测定
DOI：
10.1007/s10765-021-02795-z
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发表时间：
2021
影响因子：
2.2
通讯作者：
Zhi
中科院分区：
文献类型：
--
作者：
Yongyang Su;Wenliang Wang;W. Wang;Li;Xiaopan Shen;Jiang Xu;Zhi
水在氮气中的扩散系数 (Dvg) 是一个关键的热物理参数。然而，广泛使用的Dvg经验参数化仅适用于273 K至373 K的温度范围。在过冷范围内，报道的Dvg实验值稀疏，并且Dvg随温度变化的方式与经验方程和最近报道的第一性原理计算不同。在本文中，在给定温度（包括过冷范围）下的 Dvg 值是利用良好控制条件下氮气流中单个水滴的蒸发动力学来确定的。利用能够描述单个水滴快速蒸发/冷凝过程的KVH模型，并仔细评估热物理/动力学参数。通过回顾冰、类液层冰、过冷水、普通水和热水的质量调节系数（αM）的文献值，发现OriginPro®提出的Slogistic1函数可以很好地描述αM的温度依赖性。然后，通过改变 Dvg，从 KVH 模型预测单个水滴的半径与时间曲线，然后与电动天平记录的实验曲线进行比较。将最佳一致性对应的Dvg试验值作为其实验值。通过审查和回归拟合所有可用的实验数据，提出了 Dvg 的改进表达。在 248 K 至 600 K 温度范围内，精度评估为±±4%。
Diffusion coefficient of water in nitrogen (Dvg) is a critical thermophysical parameter. However, the widely used empirical parametrizations of Dvg are only applicable in the temperature range from 273 K to 373 K. In the supercooled range, the reported experimental values of Dvg is sparse, and Dvg varies with temperature in a way different from the empirical equations and the recently reported first-principles calculation. In this paper, Dvg values at given temperatures, including in the supercooled range, were determined using the evaporation kinetics of individual water droplets in nitrogen flow under well-controlled conditions. The KVH model capable of describing the rapid evaporation/condensation process of an individual water droplet was utilized, and the thermophysical/kinetic parameters were evaluated carefully. Through reviewing the literature values of mass accommodation coefficient (αM) for ice, ice with liquid-like layer, supercooled water, normal water, and hot water, it is observed that the Slogistic1 function presented by OriginPro® could describe the temperature dependence of αM well. Then, the radius vs. time curve of an individual water droplet was predicted from the KVH model by varying Dvg and then compared with the experimental curve recorded by the Electrodynamic Balance. The trial value of Dvg corresponding to the best agreement was treated as its experimental value. By reviewing and regression fitting of all available experimental data, an improved expression of Dvg is proposed. The accuracy is evaluated to be ± 4 % in the temperature range of 248 K to 600 K.
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DOI：
10.1021/jp310070y
发表时间：
2012-10
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
P. Varilly;D. Chandler
通讯作者：
P. Varilly;D. Chandler
DOI：
10.1021/acs.jpca.6b04194
发表时间：
2016-06
期刊：
The journal of physical chemistry. A
影响因子：
--
作者：
G. Rovelli;R. E. H. Miles;J. Reid;S. Clegg
通讯作者：
G. Rovelli;R. E. H. Miles;J. Reid;S. Clegg
影响因子：
3.3
作者：
Cotterell, Michael I.;Mason, Bernard J.;Reid, Jonathan P.
通讯作者：
Reid, Jonathan P.
限制气溶胶直接强迫的不确定性
影响因子：
5.2
作者：
Watson-Parris D
通讯作者：
Watson-Parris D