The combustion characteristics of a coal-water slurry spray were examined under diesel engine conditions. A two-stage combustion process was used to simulate the diesel engine conditions in a constant-volume combustion bomb. The combustion characteristics investigated were ignition delay, ignition site, combustion development, combustion duration, and combustion completeness. The results show that the ignition delay of the coal-water slurry fuel is temperature and pressure dependent. Also, the coal slurry ignition delay is approximately a factor of five longer and the energy release rate is significantly slower in comparison to the ignition delay and energy release rate for conventional No. 2 diesel fuel. The combustion of the slurry spray was incomplete for all test conditions due to the impingement and the adherence of the coal slurry on the wall. This fundamental testing provides insight into engine design parameters which must be considered if coal-water slurry is to be used in practice.
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October 1986
Research Papers
The Autoignition and Combustion of Coal-Water Slurry Under Simulated Diesel Engine Conditions
D. L. Siebers,
D. L. Siebers
Combustion Applications Division, Sandia National Laboratories, Livermore, CA 94550
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T. M. Dyer
T. M. Dyer
Combustion Applications Division, Sandia National Laboratories, Livermore, CA 94550
Search for other works by this author on:
D. L. Siebers
Combustion Applications Division, Sandia National Laboratories, Livermore, CA 94550
T. M. Dyer
Combustion Applications Division, Sandia National Laboratories, Livermore, CA 94550
J. Eng. Gas Turbines Power. Oct 1986, 108(4): 654-660 (7 pages)
Published Online: October 1, 1986
Article history
Received:
November 19, 1984
Online:
October 15, 2009
Citation
Siebers, D. L., and Dyer, T. M. (October 1, 1986). "The Autoignition and Combustion of Coal-Water Slurry Under Simulated Diesel Engine Conditions." ASME. J. Eng. Gas Turbines Power. October 1986; 108(4): 654–660. https://doi.org/10.1115/1.3239961
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