Topping cycle for coal-fueled electric power plants using the ceramic helical expander

Conference · Thu May 20 04:00:00 EDT 1976

OSTI ID:7345948

Myers, B; Landingham, R; Mohr, P; Taylor, R

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
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200102* -- Fossil-Fueled Power Plants-- Power Cycles
BRAYTON CYCLE POWER SYSTEMS
CARBIDES
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CERAMICS
CHEMICAL REACTIONS
COAL
COMBUSTION
CONFIGURATION
DESIGN
ENERGY SOURCES
ENGINES
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
HEAT ENGINES
HELICAL CONFIGURATION
MATERIALS
NITRIDES
NITROGEN COMPOUNDS
OXIDATION
PERFORMANCE
PNICTIDES
POWER PLANTS
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES
THERMAL POWER PLANTS
TOPPING CYCLES