A technical and economic evaluation of oxygen-enriched combustion in diesel engines using water-emulsified fuels
The technical and economic feasibility of using oxygen-enriched air and low-grade fuels in diesel cogeneration systems is reported. The effects of oxygen enrichment, low-grade fuels, and water addition on the combustion process were studied using first principles of combustion theory; the effects of oxygen enrichment and water addition on diesel engine performance were analyzed with a computer model; air separation technologies were evaluated; the coupling of the oxygen plant to the diesel engine was studied; and the internal rate of return for several system options was determined. The greatest improvement in economic benefits is obtained primarily from fuel switching, and the optimal oxygen enrichment is the minimum that will enable medium- and high-speed diesel engines to use low-grade fuels. Two oxygen-enrichment technologies, selective membranes and pressure-swing adsorption, were identified as being both technically and economically feasible. Oxygen enrichment increases the power of the diesel engine by allowing an increased fueling rate, although increased pressures and temperatures may decrease engine life. Oxygen enrichment decreases CO, smoke, and particulate emissions from the engine but increases NO{sub x} emissions. However, the NO{sub x} emissions, pressures, and temperatures can be controlled by water addition and fuel-injection timing adjustments. 53 refs., 33 figs., 20 tabs.
- Research Organization:
- Argonne National Lab., IL (USA). Energy Systems Div.
- Sponsoring Organization:
- DOE/CE
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 7250636
- Report Number(s):
- ANL/ESD/TM-2; ON: DE90008095
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
DIESEL ENGINES
DESIGN
DIESEL FUELS
COMBUSTION KINETICS
ABSORPTION
AIR-WATER INTERACTIONS
ATOMIZATION
CAPITALIZED COST
CHEMICAL ANALYSIS
COMPARATIVE EVALUATIONS
COMPRESSION
COMPUTERIZED SIMULATION
ECONOMIC ANALYSIS
ENERGY EFFICIENCY
ENVIRONMENTAL EFFECTS
FEASIBILITY STUDIES
FLEXIBILITY
OXYGEN ENRICHMENT
TECHNOLOGY ASSESSMENT
THERMODYNAMICS
CHEMICAL REACTION KINETICS
COST
ECONOMICS
EFFICIENCY
ENGINES
ENRICHMENT
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
KINETICS
MECHANICAL PROPERTIES
PETROLEUM PRODUCTS
REACTION KINETICS
SIMULATION
TENSILE PROPERTIES
330102* - Internal Combustion Engines- Diesel
421000 - Engineering- Combustion Systems
990200 - Mathematics & Computers