Effects of <i>iso</i>-octane/ethanol blend ratios on the observance of negative temperature coefficient behavior within the Ignition Quality Tester [electronic resource]
Iqt;Iso-Octane;Ethanol;Ignition;Ntc;Fuel Blends.
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| Online Access: |
Online Access (via OSTI) |
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| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Office of the Assistant Secretary of Energy Efficiency and Renewable Energy ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2016.
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| Subjects: |
MARC
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| 245 | 0 | 0 | |a Effects of <i>iso</i>-octane/ethanol blend ratios on the observance of negative temperature coefficient behavior within the Ignition Quality Tester |h [electronic resource] |
| 260 | |a Washington, D.C. : |b United States. Office of the Assistant Secretary of Energy Efficiency and Renewable Energy ; |a Oak Ridge, Tenn. : |b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, |c 2016. | ||
| 300 | |a p. 82-90 : |b digital, PDF file. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
| 337 | |a computer |b c |2 rdamedia. | ||
| 338 | |a online resource |b cr |2 rdacarrier. | ||
| 500 | |a Published through SciTech Connect. | ||
| 500 | |a 08/21/2016. | ||
| 500 | |a "nrel/ja--5400-66816" | ||
| 500 | |a Fuel 186 ISSN 0016-2361 AM. | ||
| 500 | |a Gregory E. Bogin, Jr.; Jon Luecke; Matthew A. Ratcliff; Eric Osecky; Bradley T. Zigler. | ||
| 520 | 3 | |a Here, an ignition delay study investigating the reduction in low temperature heat release (LTHR) and negative temperature coefficient (NTC) region with increasing ethanol concentration in binary blends of ethanol/isooctane was conducted in the Ignition Quality Tester (IQT). The IQT is advantageous for studying multi-component fuels such as <i>iso</i>-octane/ethanol which are difficult to study at lower temperatures covering the NTC region in traditional systems (e.g., shock tubes, rapid compression machines, etc.). The high octane numbers and concomitant long ignition delay times of ethanol and <i>iso</i>-octane are ideal for study in the IQT allowing the system to reach a quasi-homogeneous mixture; allowing the effect of fuel chemistry on ignition delay to be investigated with minimal impact from the fuel spray due to the relatively long ignition times. NTC behavior from <i>iso</i>-octane/ethanol blends was observed for the first time using an IQT. Temperature sweeps of iso-octane/ethanol volumetric blends (100/0, 90/10, 80/20, 50/50, and 0/100) were conducted from 623 to 993 K at 0.5, 1.0 and 1.5 MPa and global equivalence ratios ranging from 0.7 to 1.0. Ignition of the iso-octane/ethanol blends in the IQT was also modeled using a 0-D homogeneous batch reactor model. Significant observations include: (1) NTC behavior was observed for ethanol/<i>iso</i>-octane fuel blends up to 20% ethanol. (2) Ethanol produced shorter ignition delay times than <i>iso</i>-octane in the high temperature region. (3) The initial increase in ethanol from 0% to 10% had a lesser impact on ignition delay than increasing ethanol from 10% to 20%. (4) The 0-D model predicts that at 0.5 and 1.0 MPa ethanol produces the shortest ignition time in the high-temperature regime, as seen experimentally. | |
| 520 | 0 | |a Iqt;Iso-Octane;Ethanol;Ignition;Ntc;Fuel Blends. | |
| 536 | |b AC36-08GO28308. | ||
| 650 | 7 | |a Biomass Fuels. |2 edbsc. | |
| 710 | 2 | |a National Renewable Energy Laboratory (U.S.). |4 res. | |
| 710 | 1 | |a United States. |b Office of the Assistant Secretary of Energy Efficiency and Renewable Energy. |4 spn. | |
| 710 | 1 | |a United States. |b Department of Energy. |b Office of Energy Efficiency and Renewable Energy. |4 spn. | |
| 710 | 1 | |a United States. |b Department of Energy. |b Office of Scientific and Technical Information. |4 dst. | |
| 856 | 4 | 0 | |u http://www.osti.gov/scitech/biblio/1329461 |z Online Access (via OSTI) |
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| 952 | f | f | |p Can circulate |a University of Colorado Boulder |b Online |c Online |d Online |e E 1.99:nrel/ja--5400-66816 |h Superintendent of Documents classification |i web |n 1 |