Measurement and prediction of speeds of sound of fatty acid ethyl esters and ethylic biodiesels
Measurement and prediction of speeds of sound of fatty acid ethyl esters and ethylic biodiesels
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DOI：
10.1016/j.fuel.2013.02.041
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发表时间：
2013-06
期刊：
影响因子：
7.4
通讯作者：
Samuel V. D. Freitas;Â. Santos;M. L. Moita;L. A. Follegatti-Romero;T. P. V. B. Dias;A. Meirelles;J. Daridon;Á. Lima;J. Coutinho
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文献类型：
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作者：
Samuel V. D. Freitas;Â. Santos;M. L. Moita;L. A. Follegatti-Romero;T. P. V. B. Dias;A. Meirelles;J. Daridon;Á. Lima;J. Coutinho
脂肪酸酯的声速提供了关于生物柴油喷射特性的重要信息，并且能够估计生物柴油的许多其他重要性质。然而，脂肪酸酯的实验声速非常少。本工作提供了在大气压和293.15 - 343.15K温度范围内测量的九种脂肪酸乙酯和四种乙基生物柴油的声速的新数据。这些新的数据被用来评估的Wada的基团贡献的方法来预测生物柴油的声速的能力。它在这里示出，该模型提供了很好的描述的实验数据，与整体平均相对偏差（OARDs）为0.25%的乙酯和0.45%和0.59%之间的生物柴油。
Speed of sound of fatty esters provides important information about biodiesel injection characteristics and enables the estimation of many other important properties of biodiesels. Nevertheless, the experimental speeds of sound of fatty esters are very scant. This work provides new data on speed of sound for nine fatty acid ethyl esters and four ethylic biodiesels, measured at atmospheric pressure and temperatures ranging from 293.15 to 343.15K. These new data is used to evaluate the ability of the Wada’s group contribution method to predict the biodiesel speed of sound. It is here shown that this model provides excellent description of the experimental data, with overall average relative deviations (OARDs) of 0.25% for the ethyl esters and between 0.45% and 0.59% for the biodiesels.