| Zugriffsnummer | 43324 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Autoignition properties of Liquefied Natural Gas (LNG): an experimental and modeling study |
| Autor(in); Institution |
Vallabhuni, Sonal K.; 3.3, Physikalische Chemie, PTB-Braunschweig
Shu, Bo; 3.3, Physikalische Chemie, PTB-Braunschweig
Moshammer, Kai; 3.3, Physikalische Chemie, PTB-Braunschweig
Fernandes, Ravi X.; 3.3, Physikalische Chemie, PTB-Braunschweig
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| Quelle/Jahr | Proceedings of the 9th European Combustion Meeting:(2019), 1 - 6 |
| Konferenzangaben | 9th European Combustion Meeting, Lisboa, 14-17, April, 2019, Portugal |
| Zusammenfassung | Liquefied natural gas (LNG) is an important world energy resource and gains increasing attention. There are currently a number of ongoing measurement strategies looking into quality specification of LNG. However, no standard methodology has been established. In this context, it is essential to understand the autoignition properties of natural gas for its application in gas engines. It is important to develop a method for the determination of the methane number (MN), including a correlation of the methane number with LNG composition, where the methane number is a key parameter related to the knocking performance of natural gas, LNG and related fuels, and thus to their autoignition chemistry. This study aims to aid in developing an experimental validation program for the calculation of the methane number (MN) from the LNG composition by detailed understanding its autoignition kinetics. Experiments were performed in a shock tube and rapid compression machine (RCM). The ignition delay times of selected LNG type mixtures containing the species CH4/C2H6/C3H8/n-C4H10/i-C4H10/n-C5H12/i-C5H12/N2 were studied in the temperature range between 750 and 1800 K. A reduced kinetic model was developed based on literature mechanisms to validate the ignition delay experiments and for use in 0-D engine simulations to validate the methane number (MN). |
| Themenbereich der Metrologie | Metrologie in der Chemie und Stoffeigenschaften |