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Characterization of Four Diesel Fuel Surrogates by the Advanced Distillation Curve Method.

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Area of Science:

  • Chemical Engineering
  • Combustion Science
  • Alternative Fuels

Background:

  • Accurate thermophysical properties of surrogate fuels are crucial for alternative fuel development and engine optimization.
  • Surrogate fuels aim to mimic authentic refinery streams for research and development.

Purpose of the Study:

  • To characterize four diesel fuel surrogates using the advanced distillation curve (ADC) method.
  • To determine the composition and enthalpy of combustion in various distillate fractions of these surrogates.
  • To assess the similarity of surrogate volatility to target diesel fuel and other alternative diesel fuels.

Main Methods:

  • Formulation of four diesel fuel surrogates using a reliable procedure.
  • Characterization via the advanced distillation curve (ADC) method.
  • Analysis of composition and enthalpy of combustion across distillate fractions.

Main Results:

  • The volatility characteristics of the four surrogates were found to be similar to target diesel fuel and other prototype alternative diesel fuels.
  • The number of components in a surrogate influenced its volatility profile resemblance to diesel fuel.
  • The four-component surrogate (V0a) showed the most dissimilarity in initial boiling point and volatility curve shape compared to diesel fuel.

Conclusions:

  • Minimizing surrogate components simplifies modeling but requires caution to prevent oversimplification.
  • The study provides data for structure-property relationships and developing equations of state for fuel mixtures.
  • Careful surrogate formulation is essential for accurate representation of diesel fuel properties.