Topping cycle for coal-fueled electric power plants using the ceramic helical expander
Ceramic helical expanders are advocated as the work output element in a 2500/sup 0/F direct coal-fired Brayton topping cycle for central power station application. When combined with a standard steam electric power plant cycle, such a cycle could result in an overall thermal conversion efficiency in excess of 50 percent. The performance, coal tolerance, and system-development-time advantages of the ceramic helical expander approach are enumerated. A perspective on the choice of design and materials is provided. A preliminary consideration of physical properties, economic questions, and service experience has led us to a preference for the silicon nitride and silicon carbide family of materials. A program to confirm the performance and coal tolerance aspects of a ceramic helical expander system is planned.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7345948
- Report Number(s):
- UCRL-77905; CONF-751119-3
- Resource Relation:
- Conference: Symposium on environment and energy conservation, Denver, CO, USA, 3 Nov 1975
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BRAYTON CYCLE POWER SYSTEMS
PERFORMANCE
FOSSIL-FUEL POWER PLANTS
TOPPING CYCLES
HEAT ENGINES
MATERIALS
CERAMICS
COAL
COMBUSTION
DESIGN
HELICAL CONFIGURATION
SILICON CARBIDES
SILICON NITRIDES
CARBIDES
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CONFIGURATION
ENERGY SOURCES
ENGINES
FOSSIL FUELS
FUELS
NITRIDES
NITROGEN COMPOUNDS
OXIDATION
PNICTIDES
POWER PLANTS
SILICON COMPOUNDS
THERMAL POWER PLANTS
200102* - Fossil-Fueled Power Plants- Power Cycles