Bulk Modulus of Compressibility of Diesel/Biodiesel/HVO Blends

被引:29
|
作者
Lapuerta, Magin [1 ]
Agudelo, John R. [2 ]
Prorok, Matthew [3 ]
Boehman, Andre L. [3 ]
机构
[1] Univ Castilla La Mancha, Escuela Tecn Super Ingn Ind, E-13071 Ciudad Real, Spain
[2] Univ Antioquia, Fac Ingn, Medellin, Colombia
[3] Penn State Univ, Dept Energy & Mineral Engn, EMS Energy Inst, University Pk, PA 16802 USA
关键词
ALTERNATIVE DIESEL; VEGETABLE-OIL; NOX EMISSIONS; BIODIESEL; PRESSURE; FUELS; TEMPERATURE; LIQUIDS; IMPACT;
D O I
10.1021/ef201608g
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The isothermal bulk modulus of compressibility is, together with viscosity, and density, one of the properties affecting diesel injection processes. This property was measured by means of a specific apparatus that compresses a fuel sample in a high-pressure closed bottom capillary tube (a pycnometer) and by observing the height change in the column of fluid as pressure is increased over a range of pressures from 3 to 33 MPa. The bulk modulus of a conventional diesel fuel, a soybean oil derived biodiesel, and a hydrotreated soybean oil diesel fuel, together with that of their ternary blends, was measured. Water served as the calibration fluid, and measurements were made at 38 degrees C. All the fuels tested displayed substantially lower isothermal bulk modulus than water. There are observed differences between these fuel samples, with biodiesel displaying much lower compressibility than both the conventional diesel fuel and the hydrotreated oil. Although most of the blends showed bulk modulus values proportional to their volume fractions, some nonlinear effects were found when diesel fuel was involved in the blends, and particularly, a synergistic effect was found in blends with diesel and hydrotreated oil. An optimized correlation has been obtained to predict bulk modulus from the volume proportions of the three fuels tested.
引用
收藏
页码:1336 / 1343
页数:8
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