Viscosity-composition-temperature data of HII 2 H 2 O solution at atmospheric pressure
Viscosity-composition-temperature data of HII 2 H 2 O solution at atmospheric pressure
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大气压下HII 2 H 2 O溶液的粘度-组成-温度数据
DOI：
10.1016/j.ijhydene.2018.10.080
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发表时间：
2018
影响因子：
7.2
通讯作者：
Jingming Xu
中科院分区：
文献类型：
--
作者：
Songzhe Chen;Ping Zhang;Laijun Wang;Jingming Xu
Hisingle键H_2O-单键I_2(HIX)溶液的基本物理化学数据对于大规模制氢的热化学分水碘硫循环具有重要意义。Hi、I2和H2O组成了一个高度非理想的溶液体系，其粘度和随组成/温度的变化对于流程图工作和相关的CFD研究是非常必要的。本工作对HIX的粘度进行了详细而系统的研究。测定了53个不同组成的HIX溶液在20~120C温度范围内的动态粘度，这些HIX溶液的HI/H2O摩尔比为1：4.337~1：11.979，HI/I2摩尔比为1：0~1：4.052。在本工作范围内，HIX的粘度在0.3710-3.9085 Mpa·S范围内变化，HIX溶液的粘度随着HI或I2含量的变化而变化很大。增加HI或I2浓度都会导致粘度的增加。当加热时，HIX的粘度大幅度下降，特别是在20-80℃的范围内。采用多项式回归建立粘度、组成和温度之间的关系模型。得到的近似二次多项式模型具有很好的精度，能够在±10%的偏差内再现大部分实验粘度。
Basic physico–chemical data of HIsingle bondH2Osingle bondI2(HIx) solution are very important for thermochemical water-splitting iodine-sulfur cycle aiming at large scale hydrogen production. HI, I2, and H2O make up a highly non-ideal solution system, whose viscosity and the variation with composition/temperature are very essential for the flowsheet work and related CFD research. Detailed and systematic studies on HIx's viscosity are conducted in this work. The dynamic viscosity values of 53 HIx samples with different compositions are measured at temperatures ranging from 20 to 120 °C. The HI/H2O molar ratio of these HIx solutions ranges from 1:4.337 to 1:11.979, while the HI/I2molar ratio from 1:0 to 1:4.052. In the range of this work, the HIx's viscosity value changes within 0.3710–3.9085 mPa‧s. HIx solution's viscosity varies dramatically when changing HI or I2contents. Increasing either HI or I2concentration will cause increase of viscosity. When heated, HIx's viscosity drops in a large scale, especially in the range of 20–80 °C. Polynomial regression is conducted to model the relationship among viscosity, composition and temperature. The obtained approximate quadratic polynomial model has good accuracy to reproduce most of the experimental viscosity values within a deviation of ±10%.