Thermophysical properties of hydrogen mixtures relevant for the development of the hydrogen economy: Review of available experimental data and thermodynamic models

TL;DR

This review compiles experimental data and thermodynamic models for hydrogen mixtures, highlighting key gaps in data coverage crucial for advancing hydrogen energy systems.

Contribution

It provides a comprehensive survey of existing experimental and theoretical data on hydrogen mixtures, identifying critical gaps for industrial applications.

Findings

Identified key data gaps in temperature, pressure, and composition ranges.

Reviewed available thermodynamic models for hydrogen mixtures.

Highlighted the importance of accurate data for hydrogen system design.

Abstract

The accurate knowledge of the thermophysical and thermodynamic properties of pure hydrogen and hydrogen mixtures plays an important role in the design and operation of many processes involved in hydrogen production, transport, storage, and use. These data are needed for the development of theoretical models necessary for the introduction of hydrogen as a promising energy carrier in the near future. A literature survey on both the available experimental data and the theoretical models associated with the thermodynamic properties of hydrogen mixtures, within the operational ranges of industrial interest for composition, temperature, and pressure, is presented in this work. Considering the available experimental data and the requirements for the design and operation of hydrogen systems, the most relevant gaps in temperature, pressure and composition are identified.