Development of a coal/water-slurry-fueled diesel engine for industrial cogeneration: Task 6. 0 Determination of accurate heat release diagrams and mechanical efficiency
Purpose of the program was to foster the long-range development of a coal/water slurry fuel-fired, slow-speed, two-stroke diesel engine for efficient and economical power generation in the 8 to 30 MW range for use in industrial cogeneration applications. This report contains the results of Task 6 of the program, a detailed analysis of heat release diagrams and determination of the mechanical efficiency for a single-cylinder, slow-speed diesel test engine when operated on coal/water slurry and diesel fuels. A digitized technique was utilized to determine the cylinder pressure history. The results of the program showed that the averages of previously reported thermal efficiency values for operation on coal/water slurry fuels were very accurate determinations. In addition, the slight differences in thermal efficiency between diesel and slurry operation are most likely related to changes in the mechanical efficiency resulting from degradation of the piston ring/cylinder liner interface rather than changes in combustion efficiency. Our previous prediction that, at 50% water content, the efficiency of a coal/water slurry engine is comparable to a diesel engine, has been confirmed experimentally and explained analytically.
- Research Organization:
- Thermo Electron Corp., Waltham, MA (USA). Energy Systems Div.
- DOE Contract Number:
- AC02-82CE40539
- OSTI ID:
- 6514011
- Report Number(s):
- DOE/CE/40539-05; ON: DE87009322
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
DIESEL ENGINES
PERFORMANCE TESTING
COAL
COGENERATION
DIESEL FUELS
EFFICIENCY
FUEL CONSUMPTION
FUEL SLURRIES
INDUSTRY
THERMAL EFFICIENCY
CARBONACEOUS MATERIALS
DEUS
DISPERSIONS
ENERGY CONSUMPTION
ENERGY SOURCES
ENERGY SYSTEMS
ENGINES
FOSSIL FUELS
FUELS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MATERIALS
MIXTURES
PETROLEUM PRODUCTS
POWER GENERATION
SLURRIES
STEAM GENERATION
SUSPENSIONS
TESTING
320304* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization