Correlation and prediction of biodiesel density for extended ranges of temperature and pressure

Prieto, Nieves M.C.T.; Ferreira, A.G.M.; Portugal, António; Moreira, Rui; Santos, Jaime

doi:10.1016/j.fuel.2014.09.113

Cited by 41 publications

(51 citation statements)

References 64 publications

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“…These equations and their derivatives were inserted into Equation to obtain the thermal expansion coefficient for each value of meat extract concentration studied.

{ρ |}_{X} = f true(T true) = α_{0} + α_{1} T

Thermal expansion coefficients were also calculated as a function of temperature range and their behaviour concurs with Guignon et al and Prieto et al, i.e. β ‐values increased with increasing temperature at pressures close to atmospheric pressure.…”

Section: Resultssupporting

confidence: 79%

Density, thermal expansion coefficient, and rheological behaviour of meat extract under different temperatures and solids concentrations

Polachini

Betiol

Bastos³

et al. 2016

Can J Chem Eng

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Meat extract is a product with a high aggregated value obtained by concentrating cooking broth from meat products. To optimize project design and processing, we determined experimental values of the density and rheological behaviour of meat extract. We evaluated the influences of temperature and solids concentration on the studied parameters. Different concentrations and temperatures were selected based on the main processing steps, ranging from 0-60 g soluble solids /100 g solution and 2-98 8C. The model best fitted to density was derived and a thermodynamic relation was applied to calculate the thermal expansion coefficient. Meat extract density had a linear dependence on temperature and quadratic dependence on solids content, while the thermal expansion coefficient remained approximately constant at 5.33 Â 10 À4 m 3 Á m À3 Á K À1 . Concerning rheological analyses, meat extract had Newtonian behaviour from 1.5-20 g soluble solids /100 g solution at the temperature range studied. From 30-60 g soluble solids /100 g solution , the Power-Law model was better fitted to the data and the consistency coefficient and flow behaviour index could be calculated. Both parameters were sensitive to changes in temperature and concentration. Apparent viscosity increased with increasing the meat extract concentration and lowering the temperature. The dependence of rheological parameters on temperature was expressed through an Arrhenius-type equation.

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“…These equations and their derivatives were inserted into Equation to obtain the thermal expansion coefficient for each value of meat extract concentration studied.

{ρ |}_{X} = f true(T true) = α_{0} + α_{1} T

Section: Resultssupporting

confidence: 79%

Density, thermal expansion coefficient, and rheological behaviour of meat extract under different temperatures and solids concentrations

Polachini

Betiol

Bastos³

et al. 2016

Can J Chem Eng

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show abstract

“…This intersection was observed for many liquids and was described for the first time by Bridgman. 45 For the fatty acid methyl esters, Prieto et al 46 noted the same behavior for methyl linoleate biodiesel studied by Schedemann et al 47 and they found that the α p isotherms show an intersection point at p = 65 MPa with a value of (6.562 ± 0.011) × 10 −4 K −1 . This point means that α p was independent of the temperature at this pressure because it obeyed the condition ((∂α p /∂T) p = 0).…”

Section: Table 4 Obtained Parameters and Deviations For Density Corre...mentioning

confidence: 73%

High-Pressure Soybean Oil Biodiesel Density: Experimental Measurements, Correlation by Tait Equation, and Perturbed Chain SAFT (PC-SAFT) Modeling

Aitbelale¹,

Chhiti²,

Alaoui³

et al. 2019

J. Chem. Eng. Data

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Biodiesel can easily become the crucial solution for environmental problems. The high production rate of soybean oil has been the subject of several research works to transform it into biodiesel. Knowledge of the thermodynamic properties of soybean oil biodiesel (SOB) such as densities and coefficients of expansivity and compressibility play an important role in the understanding of the intermolecular interactions between the different molecules, which in turn have an impact on fuel quality. The difficulty in measuring the thermodynamic properties of biodiesel is because they are complex structures and high-molecular-weight components. The experimental density (136 points) for SOB, as a pseudopure component, at several temperatures (298.15–393.15 K) and pressures up to 140 MPa is reported. An Anton Paar vibrating tube densimeter, calibrated with an uncertainty of ±0.7 kg m–3, was used to perform these measurements. To determine the chemical fatty acid methyl ester composition, SOB was analyzed by CHNS analysis, 1H NMR, 13C NMR, and gas chromatography–mass spectrometry and, then, the density experimental data were correlated by the Tait and perturbed chain-statistical associating fluid theory (PC-SAFT) equations of state (EoS). The experimental data were compared with correlated data, resulting in absolute average deviation (AAD = 0.01%), maximum deviation (MD = 0.03%), average deviation (Bias = −9.88 × 10–7%), and standard deviation (σ = 1.18 × 10–4 g cm–3) for the empirical Tait equation. Concerning PC-SAFT EoS, the density was reasonably correlated with AAD = 0.063%. On the other hand, isothermal compressibility, κ T , and isobaric thermal expansivity, α p , were derived from the Tait equation. The same behavior is observed for κ T and α p , consistent with the expected one. The isobaric thermal expansivity, α p , presents a crossing point at nearly 35 MPa, in agreement with what had been observed by other authors.

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“…The densities of biodiesels at various temperatures are given in Table 2. As shown in this table, the density of various biodiesels was in the ranges of 894.6-832.5, 875.9-821.5, 893.3-831.4, and 884-837.2 kg/m 3 for soybean [18], palm [19], rapeseed [18], and cottonseed oils [22], respectively. The density of biodiesel, q b (g/cm 3 ) can be calculated using the following equation [24]:…”

Section: Densitymentioning

confidence: 89%

Review of Experimental and Computational Studies on Spray, Combustion, Performance, and Emission Characteristics of Biodiesel Fueled Engines

Ágarwal

Park

Dhar

et al. 2018

Journal of Energy Resources Technology

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Biodiesel has emerged as a suitable alternative to mineral diesel in compression ignition (CI) engines in order to ensure global energy security and to reduce engine out emissions in near future. Biodiesel derived from various feedstocks available worldwide fits well in the current fuel supply arrangement for transport sector. However, biodiesel as an alternative transportation fuel has been extensively investigated because of differences in its important fuel properties compared with baseline mineral diesel. Since fuel properties greatly influence spray development, combustion, and emission formation in internal combustion (IC) engines, a number of experimental and computational studies on biodiesel usage in CI engines have been performed to determine its brake thermal efficiency (BTE), gaseous emissions, durability, etc., by various researchers using variety of engines and feedstocks. In the present paper, a critical review of the effect of biodiesel's fuel properties on engine performance, emissions, and combustion characteristics in existing diesel engines vis-a-vis conventional diesel has been undertaken. In addition, the progress and advances of numerical modeling involving biodiesel are also reviewed to determine the effect of fuel properties on spray evolution and development of reaction mechanisms for biodiesel combustion simulations. Fuel properties are discussed in two categories: physical and chemical properties, which are key parameters affecting spray and combustion processes. Subsequent sections review spray, combustion, emissions, and performance characteristics of biodiesels under various engine operation conditions. In the last section of this review paper, numerical modeling of biodiesel covering recent numerical models and schemes to understand the behavior of biodiesel combustion and pollutants formation is included. This review paper comprehensively summarizes biodiesel fuel's (BDFs) spray, combustion, and emission characteristics using experimental and numerical approaches. Limitations and scope for future studies are discussed in each section.

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Correlation and prediction of biodiesel density for extended ranges of temperature and pressure

Cited by 41 publications

References 64 publications

Density, thermal expansion coefficient, and rheological behaviour of meat extract under different temperatures and solids concentrations

Density, thermal expansion coefficient, and rheological behaviour of meat extract under different temperatures and solids concentrations

High-Pressure Soybean Oil Biodiesel Density: Experimental Measurements, Correlation by Tait Equation, and Perturbed Chain SAFT (PC-SAFT) Modeling

Review of Experimental and Computational Studies on Spray, Combustion, Performance, and Emission Characteristics of Biodiesel Fueled Engines

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