(p,ρ,T,x) and viscosity measurements of {x1n-heptane+(1−x1)n-octane} mixtures at high temperatures and high pressures

Viscosity measurements of hydrocarbon fuel at temperatures from (303.2 to 513.2)K and pressures up to 5.1MPa using a two-capillary viscometer

“…All data points are within ±1.50 % error band and 20 data points could be within ±1.00 % error band. Further, different mass ratio mixtures of n-heptane and n-octane were tested and compared with viscosity values reported in literature [10] as shown in Table 5.The excellent agreement confirms the accuracy of the viscometer for binary mixtures, which illustrating that the two-capillary viscometer could be applied to the multi-component mixtures measurement.…”

“…Some viscosity measurement methods have been proposed, such as rolling ball viscometer [5], falling-body viscometer [6][7], vibrating wire-viscometer [8][9], capillary tube viscometer [10][11][12] and so on [13][14][15][16]. Most researches were conducted on the pure compounds [5,8,[10][11][12]14] and binary mixtures [6-7, 10, 16].…”

“…Most researches were conducted on the pure compounds [5,8,[10][11][12]14] and binary mixtures [6-7, 10, 16]. And data were concentrated at low temperature and different pressures.…”

High-pressure densities and derived volumetric properties (excess, apparent, and partial molar volumes) of binary mixtures of {methanol (1)+[BMIM][BF4] (2)}

“…At concentrations close to that of the pure components (dilute mixture), the uncertainty in the V E m reached up to 15% and more. This large uncertainty in the derived values of the excess molar volume is due to a small difference between V mix and V id (dV E m ffi ðV mix À V id Þ À1 , see references [50,51]). Figure 6 also compares our present results with the data reported by Zafarani-Moattar and Shekaari [10][11][12] and Iglesias-Oter et al [13] at atmospheric pressure and at two selected isotherms.…”

A new semi‐empirical equation for compressed liquid densities of n‐alkanes

“…Figure 8. Relative deviations between experimental data sets for n-Heptane [11,[25][26][27][28][29][30][31][32] and values calculated from the new model. Values calculated from the equations by Span and Wagner [11] and by Cibulka et al [13] are plotted for comparison.…”