Autoignition Comparison of n-Dodecane/Benzene and n-Dodecane/Toluene Blends in a Constant Volume Combustion Chamber

Autoignition Comparison of n-Dodecane/Benzene and n-Dodecane/Toluene Blends in a Constant Volume Combustion Chamber
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正十二烷/苯和正十二烷/甲苯混合物在定容燃烧室中的自燃比较

DOI:
10.1021/acs.energyfuels.9b00451
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发表时间:
2019-05
期刊:
影响因子:
5.3
通讯作者:
Zhai Jiaqi
Zhai Jiaqi
中科院分区:
工程技术3区
文献类型:
--
作者:
Han Dong;Duan Yaozong;Zhai Jiaqi

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使用定容燃烧室设备测量正十二烷/苯和正十二烷/甲苯共混物的衍生十六烷值(DCN)。在883 K环境温度和20 bar环境压力条件下,研究了两组混合燃料的自燃行为,包括点火延迟(ID)和燃烧延迟(CD)时间、压力曲线以及放热速率。结果表明,正十二烷/苯共混物具有较低的DCN比的正十二烷/甲苯共混物给定的芳烃共混馏分。这两组燃料混合物表现出几乎相同的ID时标与低芳烃共混分数,但十二烷/甲苯共混物的ID变得更长时,芳烃共混分数上升到60%。正十二烷/甲苯共混物的CD在低芳烃共混分数下略短,并且这种差异在较高芳烃共混分数下变得更加明显。正十二烷/苯并二氮杂环丁烷
The derived cetane numbers (DCNs) of the n-dodecane/benzene and n-dodecane/toluene blends were measured using a constant volume combustion chamber facility. The autoignition behaviors of the two sets of fuel blends, including ignition delay (ID) and combustion delay (CD) times, pressure traces, as well as the heat release rates at the DCN determination conditions, that is, 883 K ambient temperature and 20 bar ambient pressure, were also characterized. The results revealed that the n-dodecane/benzene blends have lower DCNs than those of the n-dodecane/toluene blends given the aromatic blending fractions. The two sets of fuel blends exhibit almost the same ID timescales with low aromatic blending fractions, but the ID of the dodecane/toluene blend becomes longer when the aromatic blending fraction rises to 60%. The CDs of the n-dodecane/toluene blends are slightly shorter at low aromatic blending fractions, and this difference becomes more apparent at a higher aromatic blending fraction. The n-dodecane/benz...
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