The effect of temperature and pressure on thermodynamic properties of diesel and biodiesel fuels
The effect of temperature and pressure on thermodynamic properties of diesel and biodiesel fuels
复制标题
DOI：
10.1016/j.fuel.2010.11.015
复制
发表时间：
2011-03
期刊：
影响因子：
7.4
通讯作者：
R. Payri;F. J. Salvador;J. Gimeno;G. Bracho
中科院分区：
文献类型：
--
作者：
R. Payri;F. J. Salvador;J. Gimeno;G. Bracho
目前的工作集中在研究压力和温度对三个重要的热力学性质的影响：声速，压缩性和密度的常用柴油燃料。研究的样本燃料是常规柴油（Repsol Elite）、油菜甲酯（西班牙使用的典型生物柴油）和一种专门用于冬季（北极）的燃料。声速和密度是通过实验确定的。第三个属性，体积模量，已计算出其他两个。在较宽的温度（298<T/K<343）和压力（15<p/MPa<180）范围内进行了声速测量，这些温度和压力代表了柴油机喷射系统中使用的典型值。因此，一个特定的配置被耦合到高压注射系统，在这些极端条件下获得准确的测量。详细描述了该方法，并列出了所获得的结果，不确定度为0.3%。使用两种商用设备在宽温度范围（298<T/K<343）内进行了密度测量，获得了± 0.6%的总体不确定度。
The current work focuses on the study of the influence of pressure and temperature on three important thermodynamic properties: speed of sound, compressibility and density of common diesel fuels. The sample fuels studied were conventional diesel (Repsol Elite), Rape Methyl Ester (typical bio-diesel used in Spain) and a fuel used especially for winter season (Arctic). Speed of sound and densities has been determined experimentally. The third property, bulk modulus, has been calculated from the other two. Speed of sound measurements have been carried out in wide range of temperatures (298<T/K<343) and pressures (15<p/MPa<180), which represent the typical values used in injection systems for diesel engines. Hence, a particular configuration was coupled to the high-pressure injection system, obtaining accurate measurements at these extreme conditions. A detailed description of the method is presented; also, the obtained results are listed, with an uncertainty of ∼0.3%. Density measurements have been performed over a broad range of temperatures (298<T/K<343), using two commercial devices, obtaining an overall uncertainty of ∼0.6%.