Reference Correlation of the Viscosity of Cyclohexane from the Triple Point to 700 K and up to 110 MPa

Abstract

19.12.14 KB. Ok to add published version to spiral, AIP polic

Reference Correlation of the Viscosity of meta-Xylene from 273 to 673 K and up to 200 MPa

“…14 Recently the work has been extended to cyclic and aromatic hydrocarbons. [15][16][17][18] The present study is a continuation of this effort. The aim of this work is to critically assess the data available in the literature, and provide a correlation for the viscosity of meta-xylene that is valid over a wide range of temperature and pressure, covering the vapor, liquid, and supercritical fluid states.…”

Viscosities of Liquid Cyclohexane and Decane at Temperatures between (303 and 598) K and Pressures up to 4 MPa Measured in a Dual-Capillary Viscometer

“…From these deviations, we can also conclude that the experimental data are internally consistent to within the estimate experimental uncertainty. Equation (16) Figure 7, we compare the new results with data from the literature [13][14][15][16][17][18][19] at pressures up to 10 MPa as deviations from the correlation of Tariq et al 1 Our results agree well with the majority of the experimental data reported in the literature; however, the data of Rajagapol et al 17 at temperatures below 400 K and those of Grachev et al 19 to constrain the behavior of their correlation in the liquid state at temperatures above 441 K and those data are systematically higher than ours at temperatures above 450 K. Figure 8 compares our new results with data from the literature 13,14,[20][21][22][23][24][25][26][27][28][29] at pressure up to 10 MPa as deviations from the correlation of Huber et al 2,3 At temperatures up to 500 K, our new data agree with the correlation to within about ±1 %, which is the stated uncertainty of the correlation for the saturated liquid. At higher temperatures, the deviations are somewhat dependent upon pressure and span the interval (-3 to -6) %.…”

“…The first term in square brackets in equation (15) (15) were estimated from the correlations of Tariq et al 1 for cyclohexane and Huber et al 2,3 for decane and it was found that the effects of the temperature and pressure uncertainties contributed less than 0.8 % to ur(rη). The standard relative uncertainties ur(rη) are shown in Figure 5 for both fluids.…”

“…The corrected data were analyzed to obtain the relevant slope (dΔp/dQ), where Q was the volumetric flow rate at the pump, and the viscosity ratios were then evaluated from equation (12). The experimental viscosity ratios for cyclohexane and decane are given in Tables 2 and 3, together with absolute viscosities obtained using values of η(T0, p) from Tariq et al 1 for cyclohexane and from Huber et al 2,3 for decane.…”

“…Recently, Tariq et al 1 critically assessed the available experimental data for the viscosity of cyclohexane and provided a new reference correlation covering a wide range of temperatures (from the triple point to 700 K) and pressures (up to 110 MPa). The authors reported that in 186 papers containing 1427 data points for the viscosity of cyclohexane, the vast majority (165 papers, 504 data points) pertained to atmospheric pressure and near-ambient temperatures.…”