Abstract
The use of hydrogen (H2) as a substitute for fossil fuel, which accounts for the majority of the world’s energy, is environmentally the most benign option for the reduction of CO2 emissions. This will require gigawatt-scale storage systems and as such, H2 storage in porous rocks in the subsurface will be required. Accurate estimation of the thermodynamic and transport properties of H2 mixed with other gases found within the storage system is therefore essential for the efficient design for the processes involved in this system chain. In this study, we used the established and regarded GERG-2008 Equation of State (EoS) and SuperTRAPP model to predict the thermo-physical properties of H2 mixed with CH4, N2, CO2, and a typical natural gas from the North-Sea. The data covers a wide range of mole fraction of H2 (10–90 Mole%), pressures (0.01–100 MPa), and temperatures (200–500 K) with high accuracy and precision. Moreover, to increase ease of access to the data, a user-friendly software (H2Themobank) is developed and made publicly available.
Highlights
Background & SummaryTo meet the Paris Agreement climate targets, global carbon emissions need to reach net-zero by 20501
Hydrogen-rich town gas mixtures have been stored in geological formations since the 1970’s9 and currently, over 1,000,000 m3 of hydrogen is stored in underground salt caverns[10,11]
Several types of gas have been successfully stored in geological formations, such as natural gas, compressed air and CO2
Summary
Background & SummaryTo meet the Paris Agreement climate targets, global carbon emissions need to reach net-zero by 20501. The established and well regarded GERG-2008 EoS46 was used to predict phase behaviour and density of gas mixtures relevant to hydrogen storage, covering the thermodynamic properties of gas phase, liquid phase and supercritical regions.
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