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    A shock tube and modeling study on the autoignition properties of ammonia at intermediate temperatures

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    2018-PROCI-Manuscript-Bo Shu-revised_KM-BS AF.pdf
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    Type
    Article
    Authors
    Shu, B.
    Vallabhuni, S.K.
    He, X.
    Issayev, Gani
    Moshammer, K.
    Farooq, Aamir cc
    Fernandes, R.X.
    KAUST Department
    Chemical Kinetics & Laser Sensors Laboratory
    Clean Combustion Research Center
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    grant no. BAS/1/1300-01-01
    Date
    2018-08-08
    Online Publication Date
    2018-08-08
    Print Publication Date
    2018-08
    2019
    Permanent link to this record
    http://hdl.handle.net/10754/630474
    
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    Abstract
    Ammonia (NH3) has been considered as a promising alternative energy carrier for automobile engines and gas turbines due to its production from renewable sources using concepts such as power-to-gas. Knowledge of the combustion characteristics of NH3/air and the formation of pollutants, especially NOx and unburned NH3, at intermediate temperatures is crucially important to investigate. Detailed understanding of ammonia reaction mechanism is still lacking. The present study reports ignition delay times of NH3/air mixtures over a temperature range of 1100–1600 K, pressures of 20 and 40 bar, and equivalence ratios of 0.5, 1.0, and 2.0. The experimental results are compared to the literature mechanism of Mathieu and Petersen (2015) and reasonable agreement is observed. Detailed modeling for ammonia emissions is performed, and the NH3/air combustion is found to be potentially free from NOx and unburned NH3 at fuel-rich conditions.
    Citation
    Shu B, Vallabhuni SK, He X, Issayev G, Moshammer K, et al. (2018) A shock tube and modeling study on the autoignition properties of ammonia at intermediate temperatures. Proceedings of the Combustion Institute. Available: http://dx.doi.org/10.1016/j.proci.2018.07.074.
    Sponsors
    All ignition delay experiments were carried out at King Abdullah University of Science and Technology (KAUST) (grant no. BAS/1/1300-01-01). The funding for this work was provided by the Office of Sponsored Research at KAUST. Fruitful discussions with Dr. Arnas Lucassen (PTB) and Dr. Olivier Mathieu (Texas A&M) are gratefully acknowledged.
    Publisher
    Elsevier BV
    Journal
    Proceedings of the Combustion Institute
    DOI
    10.1016/j.proci.2018.07.074
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.proci.2018.07.074
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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