TY - JOUR
T1 - Viscosity Measurements of the H2-CO2, H2-CO2-CH4, and H2-H2O Mixtures and the H2-CO2-CH4-CO-H2O System at 280-924 K and 0.7-33.1 MPa with a Capillary Apparatus
AU - Cheng, Siyuan
AU - Shang, Fei
AU - Ma, Weigang
AU - Jin, Hui
AU - Sakoda, Naoya
AU - Zhang, Xing
AU - Guo, Liejin
N1 - Funding Information:
This work was supported by the National Key R&D Program of China (contract no. 2016YFB0600100). We thank Pengjun Mao and Weigang Zhou from the State Key Laboratory of Multiphase Flow in Power and Engineering, Xi'an Jiaotong University for the construction and maintenance of the capillary apparatus.
Funding Information:
This work was supported by the National Key R&D Program of China (contract no. 2016YFB0600100). We thank Pengjun Mao and Weigang Zhou from the State Key Laboratory of Multiphase Flow in Power and Engineering, Xi’an Jiaotong University for the construction and maintenance of the capillary apparatus.
Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/8/13
Y1 - 2020/8/13
N2 - The viscosity of hydrogen mixtures in the supercritical region of water is significant for the optimization of the gasification process of organic substances in supercritical water. In this work, a capillary apparatus was developed for measuring the viscosity of fluids and their mixtures at 279-980 K and up to 34 MPa. The viscosities of pure water, nitrogen, and hydrogen at 279-980 K and 0.5-31.0 MPa were measured, and the results were compared with the reference equations. Then, the viscosities of the H2-CO2 and H2-CO2-CH4 mixtures at 280-677 K and 0.7-33.1 MPa and of the H2-H2O mixtures and the H2-CO2-CH4-CO-H2O system at 720-924 K and 19.9-31.1 MPa were measured. The expanded relative uncertainty (k = 2) for the dynamic viscosity was estimated as 0.05. The viscosity data of the hydrogen mixtures were compared with those predicted using the equation of Wilke considering the nonideal gas effect. The absolute relative deviations between the calculated and experimental dynamic viscosities are less than 4.87%.
AB - The viscosity of hydrogen mixtures in the supercritical region of water is significant for the optimization of the gasification process of organic substances in supercritical water. In this work, a capillary apparatus was developed for measuring the viscosity of fluids and their mixtures at 279-980 K and up to 34 MPa. The viscosities of pure water, nitrogen, and hydrogen at 279-980 K and 0.5-31.0 MPa were measured, and the results were compared with the reference equations. Then, the viscosities of the H2-CO2 and H2-CO2-CH4 mixtures at 280-677 K and 0.7-33.1 MPa and of the H2-H2O mixtures and the H2-CO2-CH4-CO-H2O system at 720-924 K and 19.9-31.1 MPa were measured. The expanded relative uncertainty (k = 2) for the dynamic viscosity was estimated as 0.05. The viscosity data of the hydrogen mixtures were compared with those predicted using the equation of Wilke considering the nonideal gas effect. The absolute relative deviations between the calculated and experimental dynamic viscosities are less than 4.87%.
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U2 - 10.1021/acs.jced.0c00176
DO - 10.1021/acs.jced.0c00176
M3 - Article
AN - SCOPUS:85088037655
SN - 0021-9568
VL - 65
SP - 3834
EP - 3847
JO - Journal of Chemical and Engineering Data
JF - Journal of Chemical and Engineering Data
IS - 8
ER -