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.
References
[1]
Lee, S.W.; Tanaka, D.; Kusaka, J.; Daisho, Y. Effects of diesel fuel characteristics on spray and combustion in a diesel engine. JSAE Rev. 2002, 23, 407–414, doi:10.1016/S0389-4304(02)00221-7.
[2]
Yamaki, Y.; Mori, K.; Kohketsu, S.; Mori, K.; Kato, T. Heavy Duty Diesel Engine with Common Rail Type Fuel Injection Systems; Japanese Society of Automotive Engineers: Tokyo, Japan, 1995.
[3]
Riazi, M.R.; Al-Otaibi, G.N. Estimation of viscosity of liquid hydrocarbon systems. Fuel 2001, 80, 27–32, doi:10.1016/S0016-2361(00)00071-5.
[4]
Duncan, A.M.; Noorbahiyah, P.; Depcik, C.D.; Scurto, A.M.; Stagg-Williams, S.M. High-pressure viscosity of soybean-oil-based biodiesel blends with ultra-low sulfur diesel fuel. Energy Fuels 2012, 26, 7023–7036.
[5]
Duncan, A.M.; Ahosseini, A.; McHenry, R.; Depcik, C.D.; Stagg-Williams, S.M.; Scurto, A.M. High-pressure viscosity of biodiesel from Soybean, Canola, and Canola Oils. Energy Fuels 2010, 24, 5708–5716, doi:10.1021/ef100382f.
[6]
Park, N.A.; Irvine, T.F. The falling needle viscometer—A new technique for viscosity measurements. Warme Stoffubertrag 1984, 18, 201–206, doi:10.1007/BF01007130.
[7]
Harris, K.R.; Kanakubo, M.; Woolf, L.A. Temperature and pressure dependence of the viscosity of the ionic liquids 1-hexyl-3-methylimidazolium hexafluorophosphate and 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide. J. Chem. Eng. Data 2007, 52, 1080–1085, doi:10.1021/je700032n.
[8]
Davis, A.M.J.; Brenner, H. The falling-needle viscometer. Phys. Fluids 2001, 13, 3086–3088, doi:10.1063/1.1398537.
[9]
Isdale, J. Viscosity of Simple Liquids including Measurement and Prediction at Elevated Pressure. Ph.D. Thesis, University of Strathclyde, Glasgow, UK, 1976.
[10]
Kumagai, A.; Kawase, Y.; Yokoyama, C. Falling capillary tube viscometer suitable for liquids at high pressure. Rev. Sci. Instrum. 1998, 69, 1441–1445, doi:10.1063/1.1148778.
[11]
Vant, S.C. Investigation of Fluid Properties at Non-Ambient Conditions. Ph.D. Thesis, University of Strathclyde, Glasgow, UK, 2002.
Belonenko, V.N.; Troitsky, V.M.; Belyaev, Y.E.; Dymond, J.H.; Glen, N.F. Application of a micro-(p, V, T) apparatus for measurement of liquid densities at pressures up to 500 MPa. J. Chem. Thermodyn. 2000, 32, 1203–1219, doi:10.1006/jcht.1999.0604.
[14]
Lee, B.I.; Kesler, M.G. Generalized thermodynamic correlation based on 3-parameter corresponding states. AIChE J. 1975, 21, 510–527, doi:10.1002/aic.690210313.
[15]
Paton, J.M.; Schaschke, C.J. Viscosity measurement of biodiesel at high pressure with a falling sinker viscometer. Chem. Eng. Res. Des. 2009, 87, 1520–1526, doi:10.1016/j.cherd.2009.04.007.
[16]
Wehbeh, E.G.; Ui, T.J.; Hussey, R.G. End effects for the falling cylinder viscometer. Phys. Fluids A 1993, 5, 25–33, doi:10.1063/1.858781.
[17]
Huang, P.Y.; Feng, J. Wall effects on the flow of viscoelastic fluids around a circular-cylinder. J. Non-Newton. Fluid 1995, 60, 179–198, doi:10.1016/0377-0257(95)01394-2.
[18]
Lommatzsch, T.; Megharfi, M.; Mahe, E.; Devin, E. Conceptual study of an absolute falling-ball viscometer. Metrologia 2001, 38, 531–534, doi:10.1088/0026-1394/38/6/7.
[19]
Stalnaker, J.F.; Hussey, R.G. Wall effects on cylinder drag at low reynolds-number. Phys. Fluids 1979, 22, 603–613, doi:10.1063/1.862642.
[20]
Ristow, G.H. Wall correction factor for sinking cylinders in fluids. Phys. Rev. E 1997, 55, 2808–2813, doi:10.1103/PhysRevE.55.2808.
[21]
Park, N.A.; Irvine, T.F. Falling cylinder viscometer end correction factor. Rev. Sci. Instrum. 1995, 66, 3982–3984, doi:10.1063/1.1145404.
[22]
Schaschke, C.J.; Abid, S.; Fletcher, I.; Heslop, M.J. Evaluation of a falling sinker-type viscometer at high pressure using edible oil. J. Food Eng. 2008, 87, 51–58, doi:10.1016/j.jfoodeng.2007.09.032.
[23]
Gui, F.L.; Irvine, T.F. Theoretical and experimental-study of the falling cylinder viscometer. Int. J. Heat Mass Tran. 1994, 37, 41–50, doi:10.1016/0017-9310(94)90007-8.
