کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6632632 | 1424952 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experiments and modeling of the autoignition of methyl pentanoate at low to intermediate temperatures and elevated pressures in a rapid compression machine
ترجمه فارسی عنوان
آزمایشات و مدل سازی خودکار انحلال پنتانوئات متیل در دماهای کم تا متوسط و فشار بالا در دستگاه فشرده سازی سریع
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کلمات کلیدی
سینتیک شیمیایی، دستگاه فشرده سازی سریع، خودمختاری، متیل استر، متیل ولئرتی، متیل پنتانوئید،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Methyl valerate (C6H12O2, methyl pentanoate) is a methyl ester and a relevant surrogate component for biodiesel. In this work, we present ignition delays of methyl valerate measured using a rapid compression machine at a range of engine-relevant temperature, pressure, and equivalence ratio conditions. The conditions we have studied include equivalence ratios (Ï) from 0.25 to 2.0, temperatures between 680â¯K and 1050â¯K, and pressures of 15â¯bar and 30â¯bar. The ignition delay data demonstrate a negative temperature coefficient region in the temperature range of 720-800â¯K for both Ï=2.0, 15â¯bar and Ï=1.0, 30â¯bar, with two-stage ignition apparent over the narrower temperature ranges of 720-760â¯K for 15â¯bar and 740-760â¯K at 30â¯bar. In addition, the experimental ignition delay data are compared with simulations using an existing chemical kinetic model from the literature. The simulations with the literature model under-predict the data by factors between 2 and 10 over the entire range of the experimental data. In addition, a new chemical kinetic model is developed using the Reaction Mechanism Generator (RMG) software. The agreement between the experimental data and the RMG model is also not satisfactory. To help determine the possible reasons for the disagreement, a path analysis of both models is completed. It is found that improvements to both the reaction pathways and thermodynamic properties are required. Further directions for future improvement of the methyl valerate model are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 212, 15 January 2018, Pages 479-486
Journal: Fuel - Volume 212, 15 January 2018, Pages 479-486
نویسندگان
Bryan W. Weber, Justin A. Bunnell, Kamal Kumar, Chih-Jen Sung,