TY - JOUR
T1 - Ignition delay measurements of light naphtha: A fully blended low octane fuel
AU - Javed, Tamour
AU - Nasir, Ehson Fawad
AU - Ahmed, Ahfaz
AU - Badra, Jihad
AU - Djebbi, Khalil
AU - Beshir, Mohamed
AU - Ji, Weiqi
AU - Sarathy, Mani
AU - Farooq, Aamir
N1 - KAUST Repository Item: Exported on 2020-04-23
Acknowledgements: The research reported in this work was supported by Saudi Aramco under the FUELCOM program and by King Abdullah University of Science and Technology (KAUST).
PY - 2016/6/15
Y1 - 2016/6/15
N2 - Light naphtha is a fully blended, low-octane (RON. = 64.5, MON. = 63.5), highly paraffinic (>. 90% paraffinic content) fuel, and is one of the first distillates obtained during the crude oil refining process. Light naphtha is an attractive low-cost fuel candidate for advanced low-temperature compression ignition engines where autoignition is the primary control mechanism. We measured ignition delay times for light naphtha in a shock tube and a rapid compression machine (RCM) over a broad range of temperatures (640-1250. K), pressures (20 and 40. bar) and equivalence ratios (0.5, 1 and 2). Ignition delay times were modeled using a two-component primary reference fuel (PRF) surrogate and a multi-component surrogate. Both surrogates adequately captured the measured ignition delay times of light naphtha under shock tube conditions. However, for low-temperature RCM conditions, simulations with the multi-component surrogate showed better agreement with experimental data. These simulated surrogate trends were confirmed by measuring the ignition delay times of the PRF and multi-component surrogates in the RCM at . P = 20. bar, . ϕ = 2. Detailed kinetic analyses were undertaken to ascertain the dependence of the surrogates' reactivity on their chemical composition. To the best of our knowledge, this is the first fundamental autoignition study on the reactivity of a low-octane fully blended fuel and the use of a suitably formulated multi-component surrogate to model its behavior.
AB - Light naphtha is a fully blended, low-octane (RON. = 64.5, MON. = 63.5), highly paraffinic (>. 90% paraffinic content) fuel, and is one of the first distillates obtained during the crude oil refining process. Light naphtha is an attractive low-cost fuel candidate for advanced low-temperature compression ignition engines where autoignition is the primary control mechanism. We measured ignition delay times for light naphtha in a shock tube and a rapid compression machine (RCM) over a broad range of temperatures (640-1250. K), pressures (20 and 40. bar) and equivalence ratios (0.5, 1 and 2). Ignition delay times were modeled using a two-component primary reference fuel (PRF) surrogate and a multi-component surrogate. Both surrogates adequately captured the measured ignition delay times of light naphtha under shock tube conditions. However, for low-temperature RCM conditions, simulations with the multi-component surrogate showed better agreement with experimental data. These simulated surrogate trends were confirmed by measuring the ignition delay times of the PRF and multi-component surrogates in the RCM at . P = 20. bar, . ϕ = 2. Detailed kinetic analyses were undertaken to ascertain the dependence of the surrogates' reactivity on their chemical composition. To the best of our knowledge, this is the first fundamental autoignition study on the reactivity of a low-octane fully blended fuel and the use of a suitably formulated multi-component surrogate to model its behavior.
UR - http://hdl.handle.net/10754/627026
UR - https://linkinghub.elsevier.com/retrieve/pii/S1540748916300438
UR - http://www.scopus.com/inward/record.url?scp=85006416157&partnerID=8YFLogxK
U2 - 10.1016/j.proci.2016.05.043
DO - 10.1016/j.proci.2016.05.043
M3 - Article
AN - SCOPUS:85006416157
SN - 1540-7489
VL - 36
SP - 315
EP - 322
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
IS - 1
ER -