کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1279409 | 1497653 | 2008 | 7 صفحه PDF | دانلود رایگان |
Determination of electric properties at the different steps of biodiesel (BD) production contributes to a better understanding of the influence of the variables. Measurements of complex permittivity and conductivity make possible to survey efficiently the diverse steps of the industrial-scale production process, from the conditioning of the raw material to the quality control of the final product. Moreover, electrical measurements are “non-destructive” and require relatively small sample volumes.In this work, complex permittivity spectra of BD and DF from 20 Hz to 20 MHz are presented. Experimental data were taken in a range of temperatures from 25 to 75 °C, measured with an accuracy of ±0.1∘C.The measuring system used in this work requires a sample volume of 25cm3 and gives the real part of permittivity (ε′ε′) with an accuracy better than 1%. Dielectric loss (tgδ) can be measured between 10-210-2 and 102102.
Journal: International Journal of Hydrogen Energy - Volume 33, Issue 13, July 2008, Pages 3531–3537