Predicting Speed of Sound in Fatty Acid Alkyl Esters and Biodiesels at High Pressure

Daridon, Jean-Luc

doi:10.1021/acs.iecr.2c01438

Cited by 7 publications

(14 citation statements)

References 52 publications

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“…Recently, Daridon , reported a new method to predict the speed of sound in both pure fatty acid alkyl esters and biodiesel fuels. They proposed where c is the speed of sound, x i and M i are the mole fraction and molar weight of ester i in the biodiesel, γ = 0.975, and cM γ, i is a Murnaghan-type equation where p ∼/MPa = p – 0.1 and parameters A , B , and C are functions of temperature. , …”

Section: Resultsmentioning

confidence: 99%

“…Recently, Daridon 42,43 reported a new method to predict the speed of sound in both pure fatty acid alkyl esters and biodiesel fuels. They proposed 43…”

Section: Speed Of Sound In Biodieselmentioning

confidence: 99%

“…) C (10) where p∼/MPa = p − and parameters A, B, and C are functions of temperature. 42,43 Following the detailed discussion about the dependence on p and T of speed of sound in biodiesel, in Figure 8, the experimental and calculated data for the speed of sound (c) is presented as a function of the temperature for the pressures studied. As usual, c decreases as T increases and an increase with p is observed.…”

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confidence: 99%

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Pressure Effect on the Speed of Sound of Waste Cooking Oil Biodiesel

et al. 2022

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The knowledge of speed of sound for biodiesel mixed with diesel at high pressures and in a wide range of temperatures is important for optimizing the injection process in diesel engine operation. The experimental speed of sound data in the literature about biodiesel is scarce. For that reason, the authors tried to evaluate the influence of temperature and pressure on the speed of sound of used cooking oil biodiesel (UCO) over the temperature range of 303−343 K and pressure varying from atmospheric up to 25 MPa. For that purpose, an acoustic cell with two ultrasonic probes working in through-transmission was used for speed of sound measurement. The uncertainty for the measurements was estimated as 1.4 m•s −1 . New measurements for 1-butanol, used as a calibration test substance, are reported with good agreement with literature data, with 0.2% differences. Correlations for the speed of sound for 1-butanol and biodiesel were developed for pressure and temperature ranges with accuracy better than the measurement uncertainty. A very recent predictive method for the speed of sound of biodiesel was tested with the data of this work, resulting in average percent deviations of only 0.12%. Differences in the speed of sound between biodiesel and diesel are presented and discussed.

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Section: Resultsmentioning

confidence: 99%

“…Recently, Daridon 42,43 reported a new method to predict the speed of sound in both pure fatty acid alkyl esters and biodiesel fuels. They proposed 43…”

Section: Speed Of Sound In Biodieselmentioning

confidence: 99%

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confidence: 99%

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Pressure Effect on the Speed of Sound of Waste Cooking Oil Biodiesel

et al. 2022

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“…Pure component properties form the basis of mixture properties, of which pure components are typically a special case, and the article by Gupta et al 58 describes the development of databases and correlations for this purpose and the article by Daridon is also along these lines. 61 Huber et al 62 describe the REFPROP EOS for reference quality properties of high volume chemicals and Alsaifi and Elliott describe a methodology to avoid artifacts in noncubic EOSs. 63 Articles by Lira et al, 46 Lira et al, 48 Fouad et al, 64 and Elliott 65 describe recent developments regarding Wertheim association theory.…”

Section: Introductionmentioning

confidence: 99%

Current Practices and Continuing Needs in Thermophysical Properties for the Chemical Industry

Gupta

Elliott

Anderko

et al. 2023

Ind. Eng. Chem. Res.

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The status of thermophysical property needs of the chemical industry is reviewed and updated relative to similar observations from 20 years ago. The paper is informed by a series of symposia held over several years in conjunction with the American Institute of Chemical Engineers (AIChE) national meetings. Experiences of the authors are also incorporated, including a discussion of the state of the art in this area, as well as references to several of the articles included in a recent special issue of Ind. Eng. Chem. Res. (2022, volume 61, issue 42) devoted to the subject. In general, the trend is toward more rigorous molecular methods but ingrained empirical methods tend to hold on for extended times by adding increasingly sophisticated multiparameter correlations. There is also a tendency for research in newer methods to end prematurely with anecdotal proofs of principle, undermining their ability to supersede tried and true methods. Significant gaps exist in experimental data, for the development of estimation methods and validation of models besides a general need for technical knowledge development. Although progress is clear, some of the goals articulated 20 years ago remain to be achieved, even as new needs are identified in estimation. modeling, and measurements. One possible solution, to close experimental data gaps and to provide a continuous stream of trained personnel, is to establish multidisciplinary research centers of excellence in this important methodology.

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“…Using the experimental results of speed of sound as a function of temperature and pressure and the recent equation proposed by Daridon,33 an equation model was proposed to represent the behavior of speed of sound as function of temperature, pressure, and composition of the isobutanol and biodiesel mixtures.…”

Section: Introductionmentioning

confidence: 99%

Influence of Pressure and Temperature in the Speed of Sound of Isobutanol + Biodiesel Mixtures

et al. 2023

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Given the speed of sound as one of the most important property affecting the performance and characteristics of compression ignition engines (CI), the present work aimed to study the influence of temperature and pressure on the speed of sound of waste cooking oil biodiesel mixed with isobutanol. Speed of sound data of such mixtures have been measured over the entire composition range at temperatures from 303 to 333 K and pressures from 0.1 to 25 MPa, with a combined uncertainty of 1.4 m s–1, using an acoustical cell developed for that purpose. The sound speed data of biodiesel, isobutanol, and of each isobutanol + biodiesel mixture were correlated using polynomial equations, resulting in average absolute relative deviations usually less than 0.08%. The speed of sound of the studied mixtures was successfully correlated with an equation proposed recently for biodiesel which was found to be appropriate to describe the data in the pressure, temperature, and composition ranges with an AARD % = 0.2.

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Predicting Speed of Sound in Fatty Acid Alkyl Esters and Biodiesels at High Pressure

Cited by 7 publications

References 52 publications

Pressure Effect on the Speed of Sound of Waste Cooking Oil Biodiesel

Pressure Effect on the Speed of Sound of Waste Cooking Oil Biodiesel

Current Practices and Continuing Needs in Thermophysical Properties for the Chemical Industry

Influence of Pressure and Temperature in the Speed of Sound of Isobutanol + Biodiesel Mixtures

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