Accurate experimental (p, ρ, T) data of natural gas mixtures for the assessment of reference equations of state when dealing with hydrogen-enriched natural gas

The GERG-2008 equation of state is the approved ISO standard (ISO 20765-2) for the calculation of thermophysical properties of natural gas mixtures. The composition of natural gas can vary considerably due to the diversity of origin. Further diversification was generated by adding hydrogen, biogas,...

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Authors: Hernández Gómez, Roberto, Tuma, Dirk, Lozano Martín, Daniel, Chamorro Camazón, César Rubén
Format: article
Status:Draft version
Publication Date:2018
Country:España
Institution:Universidad de Valladolid
Repository:UVaDOC. Repositorio Documental de la Universidad de Valladolid
OAI Identifier:oai:uvadoc.uva.es:10324/64596
Online Access:https://doi.org/10.1016/j.ijhydene.2018.10.027
https://uvadoc.uva.es/handle/10324/64596
Access Level:Open access
Keyword:Hydrogen-enriched natural gas
Gravimetric preparation
Single-sinker densimeter
Reference equations of state
GERG-2008
AGA8-DC92
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spelling Accurate experimental (p, ρ, T) data of natural gas mixtures for the assessment of reference equations of state when dealing with hydrogen-enriched natural gasHernández Gómez, RobertoTuma, DirkLozano Martín, DanielChamorro Camazón, César RubénHydrogen-enriched natural gasGravimetric preparationSingle-sinker densimeterReference equations of stateGERG-2008AGA8-DC92The GERG-2008 equation of state is the approved ISO standard (ISO 20765-2) for the calculation of thermophysical properties of natural gas mixtures. The composition of natural gas can vary considerably due to the diversity of origin. Further diversification was generated by adding hydrogen, biogas, or other non-conventional energy gases. In this work, high-precision experimental (p, ρ, T) data for two gravimetrically prepared synthetic natural gas mixtures are reported. One mixture resembled a conventional natural gas of 11 components (11 M) with a nominal mixture composition (amount-of-substance fraction) of 0.8845 for methane as the matrix compound with the other compounds being 0.005 for oxygen, 0.04 for nitrogen, 0.015 for carbon dioxide, 0.04 for ethane, 0.01 for propane, 0.002 each for n- and isobutane, and ultimately 0.0005 each for isopentane, n-pentane, and n-hexane. The other mixture was a 13-component hydrogen-enriched natural gas with a low calorific value featuring a nominal composition of 0.7885 for methane, 0.03 for hydrogen, 0.005 for helium, 0.12 for nitrogen, 0.04 for carbon dioxide, 0.0075 for ethane, 0.003 for propane, 0.002 each for n- and isobutane, and 0.0005 each for neopentane, isopentane, n-pentane, and n-hexane. Density measurements were performed in an isothermal operational mode at temperatures between 260 and 350 K and at pressures up to 20 MPa by using a single-sinker densimeter with magnetic suspension coupling. The data were compared with the corresponding densities calculated from both GERG-2008 and AGA8-DC92 equations of state to test their performance on real mixtures. The average absolute deviation from GERG-2008 (AGA8-DC92) is 0.027% (0.078%) for 11 M and 0.095% (0.062%) for the 13-component H2-enriched mixture, respectively. The corresponding maximum relative deviation from GERG-2008 (AGA8-DC92) amounts to 0.095% (0.127%) for 11 M and 0.291% (0.193%) for the H2-enriched mixture.Support for this work came from the projects ‘Caracterizacion de gases energeticos sostenibles (biogas e hidrogeno), producidos con recursos renovables biomásicos y eólicos, para su incorporación a la red de gas natural’, ENE2017-88474-R, funded by the Spanish Government and ‘Revalorización de recursos renovables regionales biomásicos y eólicos para la producción de gases energéticos sostenibles (biogás e hidrógeno) y su incorporación en la red de gas natural’, VA035U16 and ‘UIC-114’ from the Junta de Castilla y León.Elsevier2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/draftapplication/pdfhttps://doi.org/10.1016/j.ijhydene.2018.10.027https://uvadoc.uva.es/handle/10324/64596reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolidinstname:Universidad de ValladolidEspañolhttps://www.sciencedirect.com/science/article/pii/S036031991833204X?via%3Dihub#kwrds0010info:eu-repo/semantics/openAccessoai:uvadoc.uva.es:10324/645962026-06-13T12:44:47Z
dc.title.none.fl_str_mv Accurate experimental (p, ρ, T) data of natural gas mixtures for the assessment of reference equations of state when dealing with hydrogen-enriched natural gas
title Accurate experimental (p, ρ, T) data of natural gas mixtures for the assessment of reference equations of state when dealing with hydrogen-enriched natural gas
spellingShingle Accurate experimental (p, ρ, T) data of natural gas mixtures for the assessment of reference equations of state when dealing with hydrogen-enriched natural gas
Hernández Gómez, Roberto
Hydrogen-enriched natural gas
Gravimetric preparation
Single-sinker densimeter
Reference equations of state
GERG-2008
AGA8-DC92
title_short Accurate experimental (p, ρ, T) data of natural gas mixtures for the assessment of reference equations of state when dealing with hydrogen-enriched natural gas
title_full Accurate experimental (p, ρ, T) data of natural gas mixtures for the assessment of reference equations of state when dealing with hydrogen-enriched natural gas
title_fullStr Accurate experimental (p, ρ, T) data of natural gas mixtures for the assessment of reference equations of state when dealing with hydrogen-enriched natural gas
title_full_unstemmed Accurate experimental (p, ρ, T) data of natural gas mixtures for the assessment of reference equations of state when dealing with hydrogen-enriched natural gas
title_sort Accurate experimental (p, ρ, T) data of natural gas mixtures for the assessment of reference equations of state when dealing with hydrogen-enriched natural gas
dc.creator.none.fl_str_mv Hernández Gómez, Roberto
Tuma, Dirk
Lozano Martín, Daniel
Chamorro Camazón, César Rubén
author Hernández Gómez, Roberto
author_facet Hernández Gómez, Roberto
Tuma, Dirk
Lozano Martín, Daniel
Chamorro Camazón, César Rubén
author_role author
author2 Tuma, Dirk
Lozano Martín, Daniel
Chamorro Camazón, César Rubén
author2_role author
author
author
dc.subject.none.fl_str_mv Hydrogen-enriched natural gas
Gravimetric preparation
Single-sinker densimeter
Reference equations of state
GERG-2008
AGA8-DC92
topic Hydrogen-enriched natural gas
Gravimetric preparation
Single-sinker densimeter
Reference equations of state
GERG-2008
AGA8-DC92
description The GERG-2008 equation of state is the approved ISO standard (ISO 20765-2) for the calculation of thermophysical properties of natural gas mixtures. The composition of natural gas can vary considerably due to the diversity of origin. Further diversification was generated by adding hydrogen, biogas, or other non-conventional energy gases. In this work, high-precision experimental (p, ρ, T) data for two gravimetrically prepared synthetic natural gas mixtures are reported. One mixture resembled a conventional natural gas of 11 components (11 M) with a nominal mixture composition (amount-of-substance fraction) of 0.8845 for methane as the matrix compound with the other compounds being 0.005 for oxygen, 0.04 for nitrogen, 0.015 for carbon dioxide, 0.04 for ethane, 0.01 for propane, 0.002 each for n- and isobutane, and ultimately 0.0005 each for isopentane, n-pentane, and n-hexane. The other mixture was a 13-component hydrogen-enriched natural gas with a low calorific value featuring a nominal composition of 0.7885 for methane, 0.03 for hydrogen, 0.005 for helium, 0.12 for nitrogen, 0.04 for carbon dioxide, 0.0075 for ethane, 0.003 for propane, 0.002 each for n- and isobutane, and 0.0005 each for neopentane, isopentane, n-pentane, and n-hexane. Density measurements were performed in an isothermal operational mode at temperatures between 260 and 350 K and at pressures up to 20 MPa by using a single-sinker densimeter with magnetic suspension coupling. The data were compared with the corresponding densities calculated from both GERG-2008 and AGA8-DC92 equations of state to test their performance on real mixtures. The average absolute deviation from GERG-2008 (AGA8-DC92) is 0.027% (0.078%) for 11 M and 0.095% (0.062%) for the 13-component H2-enriched mixture, respectively. The corresponding maximum relative deviation from GERG-2008 (AGA8-DC92) amounts to 0.095% (0.127%) for 11 M and 0.291% (0.193%) for the H2-enriched mixture.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/draft
format article
status_str draft
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.ijhydene.2018.10.027
https://uvadoc.uva.es/handle/10324/64596
url https://doi.org/10.1016/j.ijhydene.2018.10.027
https://uvadoc.uva.es/handle/10324/64596
dc.language.none.fl_str_mv Español
language_invalid_str_mv Español
dc.relation.none.fl_str_mv https://www.sciencedirect.com/science/article/pii/S036031991833204X?via%3Dihub#kwrds0010
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolid
instname:Universidad de Valladolid
instname_str Universidad de Valladolid
reponame_str UVaDOC. Repositorio Documental de la Universidad de Valladolid
collection UVaDOC. Repositorio Documental de la Universidad de Valladolid
repository.name.fl_str_mv
repository.mail.fl_str_mv
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