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Title: Integration of biogas in the natural gas grid: thermodynamic characterization of a biogas-like mixture
Authors: Hernández-Gómez, Roberto
Fernández-Vicente, Teresa
Martín González, María del Carmen
Mondéjar, María Engracia
Chamorro, Cesar
Issue Date: 2015
Publisher: Elsevier
Description: Producción Científica
Citation: J. Chem. Thermodynamics 84 (2015) 60–66
Abstract: The composition of biogas may vary significantly due to the diversity of production sources, making essential to have a detailed knowledge of their thermophysical properties in order to develop and validate methods for the estimation of density, heat capacity and calorific value of biogas and biomethane. In this work the thermodynamic behavior of a synthetic biogas-like mixture, composed by methane (50%), carbon dioxide (35%), nitrogen (10%) and carbon monoxide (5%), is studied through accurate (p,ρ,T) experimental data obtained by using a single sinker densimeter with magnetic suspension coupling. The mixture was prepared by the gravimetric method at the Spanish National Metrology Institute (Centro Español de Metrología, CEM) and the accurate density measurements have been performed in the temperature range from (275 to 400) K and pressures up to 20 MPa. This work is part of the research project ‘Metrology for Biogas’ supported by the European Metrology Research Program. Experimental data are compared with the densities calculated with the GERG-2008 equation of state. Deviation between experimental and estimated densities is within a ±0.2% band at all temperatures, except at the lower temperature, 275 K, and pressures from (6 to 15) MPa, which shows a higher deviation.
Keywords: Termodinámica
Classification: biogas
thermodynamic characterization
single sinker densimeter
GERG 2008
ISSN: 0021-9614
Peer Review: SI
DOI: 10.1016/j.jct.2014.12.02834
Sponsor: MEC ENE2013-47812-R
Junta de Castilla y León VA391A12-1
European Metrology Research Program ENG54
Language: eng
Rights: info:eu-repo/semantics/openAccess
Appears in Collections:DEP46 - Artículos de revista

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