New Equations of State for Binary Hydrogen Mixtures Containing Methane, Nitrogen, Carbon Monoxide, and Carbon Dioxide

IF 4.4 2区工程技术 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of Physical and Chemical Reference Data Pub Date : 2021-03-01 DOI:10.1063/5.0040533

R. Beckmüller, M. Thol, I. Bell, E. Lemmon, R. Span

引用次数: 15

Abstract

New equations of state for the binary mixtures H2 + CH4, H2 + N2, H2 + CO2, and H2 + CO are presented. The results are part of an ongoing research project aiming at an improvement of the GERG-2008 model for the description of hydrogen-rich multicomponent mixtures. The equations are formulated in terms of the reduced Helmholtz energy and allow for the calculation of all thermodynamic properties over the entire fluid surface including the gas phase, liquid phase, supercritical region, and equilibrium states. The mathematical structure of the new mixture models corresponds to the form chosen for the reference model GERG-2008 of Kunz and Wagner [J. Chem. Eng. Data 57, 3032 (2012)]. In this way, the equations can be implemented into the existing framework of the GERG-2008 model. The ranges of validity of the new equations correspond to the normal and extended ranges of validity of the GERG-2008 model.

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含甲烷、氮、一氧化碳和二氧化碳的二元氢混合物的新状态方程

提出了新的二元混合物H2 + CH4、H2 + N2、H2 + CO2和H2 + CO的状态方程。这些结果是一个正在进行的研究项目的一部分，该项目旨在改进描述富氢多组分混合物的geg -2008模型。这些方程是用简化亥姆霍兹能量来表示的，可以计算整个流体表面的所有热力学性质，包括气相、液相、超临界区域和平衡状态。新混合模型的数学结构与Kunz和Wagner的参考模型geg -2008所选择的形式相对应[J]。化学。Eng。数据57,3032(2012)]。这样，方程就可以被实现到现有的geg -2008模型框架中。新方程的效度范围对应于geg -2008模型的正常效度范围和扩展效度范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Physical and Chemical Reference Data 化学-化学综合

CiteScore

6.90

自引率

11.60%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Physical and Chemical Reference Data (JPCRD) is published by AIP Publishing for the U.S. Department of Commerce National Institute of Standards and Technology (NIST). The journal provides critically evaluated physical and chemical property data, fully documented as to the original sources and the criteria used for evaluation, preferably with uncertainty analysis. Critical reviews may also be included if they document a reference database, review the data situation in a field, review reference-quality measurement techniques, or review data evaluation methods.