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Title: Contributing to accurate high pressure viscosity measurements: Vibrating wire viscometer and falling body viscometer techniques
Authors: Zambrano, Johnny R.
Sobrino, Manuel
Martín, M. Carmen
Villamañán, Miguel A.
Issue Date: 2016
Publisher: Elsevier
Description: Producción Científica
Citation: Journal of Chemical Thermodynamics, january 2016, vol. 96, p. 104–116
Abstract: Two new techniques for measuring viscosities at high pressure have been implemented at the TERMOCAL laboratory in order to obtain accurate values of thermophysical properties such as viscosity, especially at high pressures. A vibrating-wire viscometer has been developed to accurately measure viscosities over the working ranges T = (283.15 to 423.15) K and p = (0.1 to 140) MPa. The setup of the equipment includes calibration with toluene and its validation with n-dodecane. A falling body viscometer able to measure viscosities at T = (253.15 to 523.15) K and p = (0.1 to 140) MPa is also presented in this work. Results of calibration with toluene and its verification with n-heptane and n-dodecane are reported. The detailed uncertainty budgets for both techniques are included in this work. Moreover, the paper studies the compatibility of the results obtained using both techniques according to their corresponding uncertainties in order to obtain reliable data. New viscosity measurements of 1,2,4-trimethylbenzene and 2,2,4-trimethylpentane have been performed and included in the paper.
Keywords: Termodinámica
Classification: Viscosity
Falling-body viscometer
Vibrating-wire viscometer
ISSN: 0021-9614
Peer Review: SI
DOI: 10.1016/j.jct.2015.12.021
Sponsor: Ministerio de Educación (Spanish Government) for his FPU scholarship for doctoral studies
Consejería de Educación de la JCyL for project VA295U14
Language: eng
Rights: info:eu-repo/semantics/embargoedAccess
Appears in Collections:DEP46 - Artículos de revista

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