Density and viscosity measurement of diesel fuels at combined high pressure and elevated temperature

Carl Schaschke*, Isobel Fletcher, Norman Glen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)
2 Downloads (Pure)

Abstract

We report the measurement of the viscosity and density of various diesel fuels, obtained from British refineries, at elevated pressures up to 500 MPa and temperatures in the range 298 K to 373 K. The measurement and prediction procedures of fluid properties under high pressure conditions is of increasing interest in many processes and systems including enhanced oil recovery, automotive engine fuel injection, braking, and hydraulic systems. Accurate data and understanding of the fluid characteristic in terms of pressure, volume and temperature is required particularly where the fluid is composed of a complex mixture or blend of aliphatic or aromatic hydrocarbons. In this study, high pressure viscosity data was obtained using a thermostatically-controlled falling sinker-type high pressure viscometer to provide reproducible and reliable viscosity data based on terminal velocity sinker fall times. This was supported with density measurements using a micro-pVT device. Both high-pressure devices were additionally capable of illustrating the freezing points of the hydrocarbon mixtures. This work has, thus, provided data that can extend the application of mixtures of commercially available fuels and to test the validity of available predictive density and viscosity models. This included a Tait-style equation for fluid compressibility prediction. For complex diesel fuel compositions, which have many unidentified components, the approach illustrates the need to apply appropriate correlations, which require accurate knowledge or prediction of thermodynamic properties.

Original languageEnglish
Pages (from-to)30-48
Number of pages19
JournalProcesses
Volume1
Issue number2
DOIs
Publication statusPublished - 19 Jul 2013

Keywords

  • high pressure
  • diesel fuel
  • falling sinker viscometer
  • viscosity measurement

ASJC Scopus subject areas

  • Bioengineering
  • Chemical Engineering (miscellaneous)
  • Process Chemistry and Technology

Fingerprint

Dive into the research topics of 'Density and viscosity measurement of diesel fuels at combined high pressure and elevated temperature'. Together they form a unique fingerprint.

Cite this