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Title: Co-optima fuels combustion: A comprehensive experimental investigation of prenol isomers

Journal Article · · Fuel
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  1. Univ. of Central Florida, Orlando, FL (United States). Center for Advanced Turbomachinery and Energy Research (CATER), Mechanical and Aerospace Engineering Dept.
  2. The Public Authority for Applied Education and Training (Kuwait). Dept. of Automotive and Marine Engineering Technology, College of Technological Studies
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
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Carbon monoxide time-histories, ignition delay times, and laminar burning velocity measurements are reported for the oxidation of 3-methyl-2-buten-1-ol (prenol) and 3-methyl-3-buten-1-ol (isoprenol). These prenols are fuel candidates outlined by the U.S. Department of Energy’s Co-Optimization of Fuels and Engines (Co-Optima) program. The laminar burning velocity measurements were conducted for two fuels with synthetic air within a constant-volume spherical combustion chamber at initial conditions of 428 K and 1 atm for a range of equivalence ratios from 0.75 to 1.50. The laminar burning velocities of the two fuels were found to be similar, and the maximum value occurred at an equivalence ratio near 1.0. Carbon monoxide time-histories and ignition delay times were recorded behind reflected shockwaves in a double-diaphragm, heated shock tube over the temperature range 1269–1472 K near 9.4 atm with a mixture of 0.05% fuel/0.35% O2/99.6% Ar. Comparisons with predictions of a detailed chemical kinetic mechanism from the literature were provided. Current model predictions overpredicted both the ignition delay time and the max CO yield; however, the model captured the profile of CO formation well. Detailed uncertainty and sensitivity analyses were carried out to identify important reactions that need attention for accurate prediction of these fuel’s chemistry. Further investigation into the rate of C3H3 + O2 = CH2CO + HCO reaction was suggested based on current experiments. The experimental data and analysis presented here is critical in the development, validation and improvement of kinetic models of these promising Co-Optima fuels.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of Central Florida, Orlando, FL (United States); The Public Authority for Applied Education and Training (Kuwait)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC52-07NA27344; EE0007982
OSTI ID:
1575864
Alternate ID(s):
OSTI ID: 1544897; OSTI ID: 1763380
Report Number(s):
LLNL-JRNL-788092; 986153
Journal Information:
Fuel, Vol. 254, Issue C; ISSN 0016-2361
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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Linked Research (2)

Figures / Tables (22)

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Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
09 BIOMASS FUELS
Combustion
Biofuel
Shock tube
Flame speed
Chemical kinetics
Ignition