Coal-water slurry spray characteristics of a positive displacement fuel injection system

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Journal of Engineering for Gas Turbines and Power; (United States)

DOI:https://doi.org/10.1115/1.2906621· OSTI ID:6907429

Seshadri, A K; Caton, J A; Kihm, K D ^[1]

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1. Dept. of Mechanical Engineering, Texas A and M Univ., College Station, TX (United States)

This paper reports on experiments that have been completed to characterize coal-water slurry sprays from a modified positive displacement fuel injection system of a diesel engine. The injection system includes an injection jerk pump driven by an electric motor, a specially designed diaphragm to separate the abrasive coal from the pump, and a single-hole fuel nozzle. The sprays were injected into a pressurized chamber equipped with windows. High speed movies and instantaneous fuel line pressures were obtained. For injection pressures of order 30 MPa or higher, the sprays were similar for coal-water slurry, diesel fuel, and water. The break-up time was not a function of coal loading for coal loadings up to 53 percent. Cone angles of the sprays were dependent on the operating conditions and fluid, as well as on the time and location of the measurement. For one set of cases studied, the time-averaged cone angle was 15.9 and 16.3 deg for coal-water slurry and diesel fuel, respectively.

• OSTI ID: 6907429
• Journal Information: Journal of Engineering for Gas Turbines and Power; (United States), Journal Name: Journal of Engineering for Gas Turbines and Power; (United States) Vol. 114:3; ISSN JETPEZ; ISSN 0742-4795
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
02 PETROLEUM
025000 -- Petroleum-- Combustion
33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
330603 -- Vehicle Design Factors-- Engine System
CARBONACEOUS MATERIALS
COAL
COMBUSTION CHAMBERS
COOLING
DESIGN
DIESEL ENGINES
DISPERSIONS
DUAL-FUEL ENGINES
ENERGY SOURCES
ENGINES
FOSSIL FUELS
FUEL INJECTION SYSTEMS
FUEL SLURRIES
FUEL SYSTEMS
FUELS
HEAT ENGINES
HYDROGEN COMPOUNDS
INTERNAL COMBUSTION ENGINES
MATERIALS
MIXTURES
NOZZLES
OXYGEN COMPOUNDS
SIZE
SLURRIES
SPRAY COOLING
SPRAYS
SUSPENSIONS
WATER