Imperial College London
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Dr Saif Z. S. Al Ghafri

Faculty of Engineering, Department of Chemical Engineering

Honorary Research Fellow
 
 
 
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Contact

 

+44 (0)20 7594 1227saif.al-ghafri06

 
 
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Location

 

231ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Dhakal:2021:10.1007/s10765-021-02917-7,
author = {Dhakal, S and Tay, WJ and Al, Ghafri SZS and Rowland, D and Mullins, SP and May, EF and Trusler, JPM and Stanwix, PL},
doi = {10.1007/s10765-021-02917-7},
journal = {International Journal of Thermophysics},
pages = {1--40},
title = {Thermodynamic properties of liquid toluene from speed-of-sound measurements at temperatures from 283.15 K to 473.15 K and at pressures up to 390 MPa},
url = {http://dx.doi.org/10.1007/s10765-021-02917-7},
volume = {42},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We report the speeds of sound in liquid toluene (methylbenzene) measured using double-path pulse-echo apparatus independently at The University of Western Australia (UWA) and Imperial College London (ICL). The UWA data were measured at temperatures between (306 and 423) K and at pressures up to 65 MPa with standard uncertainties of between (0.02 and 0.04)%. At ICL, measurements were made at temperatures between (283.15 and 473.15) K and at pressures up to 390 MPa with standard uncertainty of 0.06%. By means of thermodynamic integration, the measured sound-speed data were combined with initial density and isobaric heat capacity values obtained from extrapolated experimental data to derive a comprehensive set of thermodynamic properties of liquid toluene over the full measurement range. Extensive uncertainty analysis was performed by studying the response of derived properties to constant and dynamic perturbations of the sound-speed surface, as well as the initial density and heat capacity values. The relative expanded uncertainties at 95% confidence of derived density, isobaric heat capacity, isobaric expansivity, isochoric heat capacity, isothermal compressibility, isentropic compressibility, thermal pressure coefficient and internal pressure were estimated to be (0.2, 2.2, 1.0, 2.6, 0.6, 0.2, 1.0 and 2.7)%, respectively. Due to their low uncertainty, these data and derived properties should be well suited for developing a new and improved fundamental Helmholtz equation of state for toluene.
AU  - Dhakal,S
AU  - Tay,WJ
AU  - Al,Ghafri SZS
AU  - Rowland,D
AU  - Mullins,SP
AU  - May,EF
AU  - Trusler,JPM
AU  - Stanwix,PL
DO  - 10.1007/s10765-021-02917-7
EP  - 40
PY  - 2021///
SN  - 0195-928X
SP  - 1
TI  - Thermodynamic properties of liquid toluene from speed-of-sound measurements at temperatures from 283.15 K to 473.15 K and at pressures up to 390 MPa
T2  - International Journal of Thermophysics
UR  - http://dx.doi.org/10.1007/s10765-021-02917-7
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000700392200001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://link.springer.com/article/10.1007%2Fs10765-021-02917-7
UR  - http://hdl.handle.net/10044/1/94112
VL  - 42
ER  -
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