Measurements of density and viscosity of 1-hexadecanol in the temperature range from (328.15 to 623.15) K at pressures up to 10 MPa

Fu, Yuanming; Meng, Xianyang; Liang, Xiaofei; Wu, Jiangtao

doi:10.1016/j.jct.2020.106263

Cited by 10 publications

(6 citation statements)

References 27 publications

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“…Figure 7b compares the α p values of water and the buffer solution with those of four representative C 16 OH/W and C 16 OH + C 20 OH/W emulsions. As can be observed, the isobaric thermal expansivity increases with the content of dispersed fatty alcohol, which agrees with the fact that cetyl alcohol has a higher expansivity (α p = 7-8•10 −4 K −1 at 343 K [81,91]) than water.…”

Section: Discussionsupporting

confidence: 84%

“…Slight differences (lower than 3%, within experimental uncertainty) were observed between the viscosities of the water and the phosphate buffer solution used as a continuous phase. A viscosity value of 8.19 mPa•s was measured for cetyl alcohol at 333.15 K, which agreed with data of 7.91 mPa•s reported by Fu et al [81]. Like the phosphate buffer solution and bulk cetyl alcohol, nanoemulsions containing 2-6 wt.% loadings of the dispersed phase are mainly Newtonian within the investigated shear rate.…”

Section: Dynamic Viscositiessupporting

confidence: 90%

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Development and Thermophysical Profile of Cetyl Alcohol-in-Water Nanoemulsions for Thermal Management

Cabaleiro

Losada‐Barreiro

Agresti

et al. 2021

Fluids

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This study focuses on the preparation, thermophysical and rheological characterization of phase change material nanoemulsions as latent functionally thermal fluids. Aqueous dispersions with fine droplets of cetyl alcohol (with a melting temperature at ~321 K) were prepared by means of a solvent-assisted method, combining ultrasonication with non-ionic and anionic emulsifiers. Eicosyl alcohol (melting at ~337 K) and hydrophobic silica nanoparticles were tested as nucleating agents. Droplet size studies through time and after freeze–thaw cycles confirmed the good stability of formulated nanoemulsions. Phase change analyses proved the effectiveness of eicosyl alcohol to reduce subcooling to a few Kelvin. Although phase change material emulsions exhibited thermal conductivities much larger than bulk cetyl alcohol (at least 60% higher when droplets are solid), reductions in this property reached 15% when compared to water. Samples mainly showed desirable Newtonian behavior (or slight shear thinning viscosities) and modifications in density around melting transition were lower than 1.2%. In the case of phase change material nanoemulsions with 8 wt.% content of dispersed phase, enhancements in the energy storage capacity overcome 20% (considering an operational temperature interval of 10 K around solid–liquid phase change). Formulated dispersions also showed good thermal reliability throughout 200 solidification–melting cycles.

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Section: Discussionsupporting

confidence: 84%

Section: Dynamic Viscositiessupporting

confidence: 90%

Development and Thermophysical Profile of Cetyl Alcohol-in-Water Nanoemulsions for Thermal Management

Cabaleiro

Losada‐Barreiro

Agresti

et al. 2021

Fluids

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“…The vacuum measurement was used to obtain the internal damping, while the wire radius and the density of the sinker were experimentally determined in toluene at T ref = 298.15 K and p ref = 0.1 MPa. The full calibration procedure and the final values of the parameters were presented in our previous work together with the uncertainty analysis . The relative combined expanded uncertainties of measurement with a confidence level of 0.95 ( k = 2) were estimated to be 0.26% for density and 2.1% for viscosity.…”

Section: Methodsmentioning

confidence: 99%

“…The full calibration procedure and the final values of the parameters were presented in our previous work together with the uncertainty analysis. 15 The relative combined expanded uncertainties of measurement with a confidence level of 0.95 (k = 2) were estimated to be 0.26% for density and 2.1% for viscosity.…”

Section: Introductionmentioning

confidence: 95%

Density and Viscosity Measurements of 1-Dodecanol and 1,12-Dodecanediol at Temperatures of up to 573.15 K and Pressures of up to 10 MPa

Meng

Liang

et al. 2020

J. Chem. Eng. Data

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The density and viscosity of liquid 1-dodecanol and 1,12dodecanediol were reported, which were obtained simultaneously by using a vibrating-wire viscometer. The measurements were determined at temperatures from 298.15 to 573.15 K for 1-dodecanol and 373.15 to 573.15 K for 1,12dodecanediol and at pressures from 0.1 to 10 MPa. The combined expanded uncertainties (k = 2) of the reported data for density and viscosity were estimated to be 0.26% and 2.1%, respectively. The density and viscosity data obtained in this work were correlated with the Tait-type equation and Andrade−Tait equation, respectively. The average absolute percentage deviation of the density data from the correlations were 0.08% for 1-dodecanol and 0.06% for 1,12-dodecanediol, and the average absolute percentage deviation of the viscosity data from the correlations were 0.64% for 1-dodecanol and 0.67% for 1,12-dodecanediol. The correlations were also used to compare the present results with the available literature data. An acceptable agreement between the present results and the literature data was observed. Finally, the derived properties of isobaric expansibility and isothermal compressibility were derived based on the Tait-type equation of this work.

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“…Some high-temperature and high-pressure (HTHP) viscosity measurement methods have been validated, such as vibrating-wire, , rolling ball, dynamic light scattering, and capillary method. , By comparing these methods, the capillary method is found to be used most frequently. Viscosity measurements in HTHP conditions are considerably difficult and few data points are available.…”

Section: Introductionmentioning

confidence: 99%

Measurements and Predictive Models for the Viscosity of Coal-Based Kerosene at Temperatures up to 673 K and Pressures up to 40 MPa

Zhang

Liu²,

Feng

et al. 2022

J. Chem. Eng. Data

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A high-temperature and high-pressure dual-capillary viscometer was developed to measure the dynamic viscosity of liquid and supercritical coal-based kerosene in the temperature range of 299.6–678.8 K and pressure range of 0.3–40.4 MPa. The extended relative uncertainty of the measurement results ranged from 0.8–5% (confidence factor k = 2). Using the differential of the pressure drop across the capillary with flow rate in the viscosity derivation, rather than the pressure drop directly, gave better experimental precision. The measurement accuracy was validated using cyclohexane and toluene as standard fluids; the absolute average deviations (AADs) were 1.7% for cyclohexane at 0.3–20.0 MPa and 321.8–576.6 K and 2.0% for toluene at 0.3–40.6 MPa and 285.3–315.8 K. The effects of temperature and pressure on the viscosity of coal-based kerosene were investigated using four parameters: isobaric viscosity change rate, viscosity-temperature coefficient, isothermal viscosity change rate, and viscosity-pressure coefficient. It was found that the viscosity-temperature coefficient curves of coal-based kerosene intersect each other at different pressures, which are of great significance for the establishment of viscosity predictive models. Based on the characteristics of the kerosene η–T curve, we proposed a new modified Arrhenius–Andrade model and introduce the pressure term into the model. Compared with the modified VFT model and 10-parameter nonlinear surface model, the modified Arrhenius–Andrade model best fitted the experimental data with AAD of 1.6%.

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Measurements of density and viscosity of 1-hexadecanol in the temperature range from (328.15 to 623.15) K at pressures up to 10 MPa

Cited by 10 publications

References 27 publications

Development and Thermophysical Profile of Cetyl Alcohol-in-Water Nanoemulsions for Thermal Management

Development and Thermophysical Profile of Cetyl Alcohol-in-Water Nanoemulsions for Thermal Management

Density and Viscosity Measurements of 1-Dodecanol and 1,12-Dodecanediol at Temperatures of up to 573.15 K and Pressures of up to 10 MPa

Measurements and Predictive Models for the Viscosity of Coal-Based Kerosene at Temperatures up to 673 K and Pressures up to 40 MPa

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