RT info:eu-repo/semantics/article
T1 A novel technique based in a cylindrical microwave resonator for high pressure phase equilibrium determination
A1 Susial Martín, Rodrigo
A1 Gómez Hernández, Ángel
A1 Lozano Martín, Daniel
A1 Campo Maldonado, Dolores del
A1 Martín González, María del Carmen
A1 Segovia Puras, José Juan
K1 Termodinámica
K1 Phase equilibria
K1 High pressure
K1 CO2
K1 CH4
K1 Cylindrical microwave resonator
K1 Equation of state
K1 Biogas
K1 2213.09 Equilibrios Termodinámico
K1 3322.05 Fuentes no Convencionales de Energía
AB The development of a novel technique based on a cylindrical microwave resonator for high pressure phase equilibrium determination is described. Electric permittivity or dielectric constant is a physical property that depends on temperature and pressure ε(p,T). Based on this property, a measuring technique consisting of a cylindrical resonant cavity that works in the microwave spectrum has been developed. Equilibrium data of fluid mixtures are measured at high pressure using a synthetic method, where phase transition is determined under isothermal conditions due to the change of the dielectric constant. This technique may be a more accurate alternative to conventional visual synthetic methods. The technique was validated measuring pure CO2, and phase behaviour was then determined for two binary mixtures [CO2 (0.6) + CH4 (0.4)] and [CO2 (0.4) + CH4 (0.6)], results for which are presented. These systems are interesting for the study of biogas–like mixtures. In addition, data were compared with the equation of state used for natural gas GERG-2008, and also, they were modelled using Peng-Robinson equation of state and Wong- Sandler mixing rules, which are widely employed in chemical industries and which give good results.
PB Elsevier
SN 0021-9614
YR 2019
FD 2019
LK http://uvadoc.uva.es/handle/10324/38622
UL http://uvadoc.uva.es/handle/10324/38622
LA eng
NO Journal of Chemical Thermodynamics, 2019, vol. 135, pp. 124-132.
NO Producción Científica
DS UVaDOC
RD 25-abr-2024