Coal-water slurry sprays from an electronically controlled accumulator fuel injection system: Break-up distances and times
- Texas A and M Univ., College Station, TX (United States). Dept. of Mechanical Engineering
Experiments have been completed to characterize coal-water slurry sprays from an electronically-controlled accumulator fuel injection system of a diesel engine. The sprays were injected into a pressurized chamber equipped with windows. High speed movies, fuel pressures and needle lifts were obtained as a function of time, orifice diameter, coal loading, gas density in the chamber, and accumulator fuel pressure. For the base conditions (50% (by man) coal loading, 0.4 mm diameter nozzle hole, coal-water slurry pressure of 82 MPa (12,000 psi), and a chamber density of 25 kg/m{sup 3}), the break-up time was 0.30 ms. An empirical correlation for spray tip penetration, break-up time and initial jet velocity was developed. For the conditions of this study, the spray tip penetration and initial jet velocity were 15% greater for coal-water slurry than for diesel fuel or water. Results of this study and the correlation are specific to the tested coal-water slurry and are not general for other coal-water slurry fuels.
- Research Organization:
- General Electric Co., Erie, PA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC21-88MC23174
- OSTI ID:
- 10137574
- Report Number(s):
- DOE/MC/23174-94/C0325; CONF-930392-3; ON: DE94008979; BR: AA0510000/AA5525000
- Resource Relation:
- Conference: 1993 joint Central States and Eastern sections of the Combustion Institute,New Orleans, LA (United States),15-17 Mar 1993; Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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