COMBUSTION CHARACTERISTICS, MECHANICAL EFFICIENCY AND THERMODYNAMICS OF A COAL/WATER SLURRY FIRED SLOW SPEED, TWO STROKE DIESEL ENGINE DETERMINED FROM A DIGITIZED CYLINDER PRESSURE MEASURING TECHNIQUE

Previous tests performed in the Sulzer single cylinder, slow speed, two-stroke diesel engine test facility have shown that coal/water slurry fuels can be successfully combusted with thermal efficiencies approximately equal to those obtained with diesel No. 2 fuel oil. The combustion characteristics, mechanical efficiency, and thermodynamics of this engine were investigated further by means of a digitized technique to obtain very accurate cylinder pressure histories in this test facility using coal/water slurry fuel and diesel No. 2 fuel oil. Analyses of the heat release diagrams showed some differences between the two fuels that were not significant enough to affect engine thermal efficiency. Remarkably, the heat release diagrams showed that the slurry fuel was combusted in a time period slightly shorter than conventional diesel fuel oil. The mechanical efficiency of the engine was also found to be slightly lower when fired on slurry fuel than when fired with diesel/fuel. Additional thermodynamic analysis confirmed the validity of previous fuel consumption data on coal/water slurry fuels and provided additional insight into the role slurry water plays in the thermodynamics of the diesel cycle.

Media Info

  • Features: References;
  • Pagination: 19p.

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Filing Info

  • Accession Number: 00660637
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM