RT info:eu-repo/semantics/article
T1 Impact of hydrogen addition, up to 20 % (mol/mol), on the thermodynamic (p, ρ, T) properties of a reference high-calorific natural gas mixture with significant ethane and propane content
A1 Lozano Martín, Daniel
A1 Kipphardt, Heinrich
A1 Khanipour, Peyman
A1 Tuma, Dirk
A1 Horrillo Güemes, Alfonso Jesús
A1 Chamorro Camazón, César Rubén
K1 Hydrogen-enriched natural gas
K1 Gravimetric preparation
K1 Single-sinker densimeter
K1 High-pressure density
K1 Isothermal compressibility
K1 Reference equations of state
AB Injecting hydrogen into the natural gas grid supports gradual decarbonization. To check the accuracy of equations of state for hydrogen-enriched natural gas mixtures, precise density data from well-characterized reference mixtures are essential. In a prior study, we provided experimental measurements for a natural gas constituted mainly of methane and for two derived hydrogen-enriched mixtures. In the present study, being the second and final part of our investigation, density measurements for a high-calorific natural gas with significant ethane and propane content, along with two hydrogen-enriched variants (10 and 20 mol-% hydrogen) are provided. The mixtures are gravimetrically prepared following ISO 6142-1. Density measurements, conducted with a singlesinker densimeter at temperatures from (260–350) K and pressures up to 20 MPa, are compared with three equations of state: AGA8-DC92, GERG-2008, and an improved GERG-2008. Results indicate that all models perform better for methane-dominant mixtures than for those containing heavier hydrocarbons.
PB Elsevier
SN 0360-3199
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/75859
UL https://uvadoc.uva.es/handle/10324/75859
LA eng
NO International Journal of Hydrogen Energy, 2025, vol. 140, p. 256-271.
NO Producción Científica
DS UVaDOC
RD 04-jun-2025