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  • 1
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    Cogeneration Technology Alternatives Study (CTAS). Volume 1: Summary (1980)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Various advanced energy conversion systems that can use coal or coal-derived fuels for industrial cogeneration applications were compared to provide information needed by DOE to establish research and development funding priorities for advanced-technology systems that could significantly advance the use of coal or coal-derived fuels in industrial cogeneration. Steam turbines, diesel engines, open-cycle gas turbines, combined cycles, closed-cycle gas turbines, Stirling engines, phosphoric acid fuel cells, molten carbonate fuel cells, and thermionics were studied with technology advancements appropriate for the 1985-2000 time period. The various advanced systems were compared and evaluated for wide diversity of representative industrial plants on the basis of fuel energy savings, annual energy cost savings, emissions savings, and rate of return on investment as compared with purchasing electricity from a utility and providing process heat with an on-site boiler. Also included in the comparisons and evaluations are results extrapolated to the national level.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-81400 , DOE/NASA/1062-80/4 , E-312
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    A high-speed photographic system for flow visualization in a steam turbine (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A photographic system was designed to visualize the moisture flow in a steam turbine. Good performance of the system was verified using dry turbine mockups in which an aerosol spray simulated, in a rough way, the moisture flow in the turbine. Borescopes and fiber-optic light tubes were selected as the general instrumentation approach. High speed motion-picture photographs of the liquid flow over the stator blade surfaces were taken using stroboscopic lighting. Good visualization of the liquid flow was obtained. Still photographs of drops in flight were made using short duration flash sources. Drops with diameters as small as 30 micrometers (0.0012 in.) could be resolved. In addition, motion pictures of a spray of water simulating the spray off the rotor blades and shrouds were taken at normal framing rates. Specially constructed light tubes containing small tungsten-halogen lamps were used. Sixteen millimeter photography was used in all cases. Two potential problems resulting from the two-phase turbine flow (attenuation and scattering of light by the fog present and liquid accumulation on the borescope mirrors) were taken into account in the photographic system design but not evaluated experimentally.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TM-X-2763 , E-7279
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Analysis and selection of design conditions for a radioisotope Brayton-cycle space powerplant (1968)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Analysis and selection of design for plutonium 238 for Brayton cycle space powerplant
    Keywords: AUXILIARY SYSTEMS
    Type: NASA-TN-D-4600
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Study of a 300 kWe Rankine cycle advanced nuclear-electric space power system. (1969)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Systems analysis of Rankine cycle nuclear- electric potassium space power system using Li cooled fast reactor and high temperature turbine inlet
    Keywords: NUCLEAR ENGINEERING
    Type: AMERICAN INST. OF CHEMICAL ENGINEERS, INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE; Sep 22, 1969 - Sep 26, 1969; WASHINGTON, DC
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Isotope Brayton electric power system for the 500 to 2500 watt range (1972)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: An extensive study was conducted at the Lewis Research Center to evaluate an isotope Brayton electric power system for use in the 500 to 2500 W power range. Overall system simplicity was emphasized in order to reduce parasitic power losses and improve system reliability. Detailed parametric cycle analysis, conceptual component designs, and evaluation of system packaging were included. A single-loop system (gas) with six major components including one rotating unit was selected. Calculated net system efficiency varies from 23 to 28 percent over the power range.
    Keywords: NUCLEAR ENGINEERING
    Type: NASA-TM-X-68072 , Intersoc. Energy Conversion Eng. Conf.; Sep 25, 1972 - Sep 29, 1972; San Diego, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Investigation of the use of the lunar surface layer to store energy for generating power during the lunar night (1968)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Lunar surface layer considered to store solar energy for generating power during lunar night
    Keywords: AUXILIARY SYSTEMS
    Type: NASA-TM-X-1560
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Study of a 300-kilowatt Rankine-cycle advanced nuclear-electric space-power system (1969)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: System analysis of lithium-cooled Rankine cycle nuclear-electric space power unit
    Keywords: NUCLEAR ENGINEERING
    Type: NASA-TM-X-1919 , E-5135
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Design point characteristics of a 500 - 2500 watt isotope-Brayton power system (1972)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: An analytical study was conducted to investigate the potential performance characteristics of an isotope-Brayton space power system at electric power levels from 500 - 2500 watts. Utilization of the Pu(238) heat source, or capsule, was assumed. A single-loop system design concept was selected. The design concept and results of first-order trade-off studies of the effects of major system parameters on system performance are presented. Results of the study indicate the potential for high system efficiency and high specific power over the entire power range.
    Keywords: AUXILIARY SYSTEMS
    Type: NASA-TM-X-68137 , E-7138 , Propulsion Specialists Conf.; Nov 29, 1972 - Dec 01, 1972; New Orleans
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Design point characteristics of a 500 - 2500 watt isotope-Brayton power system. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: An analytical study was conducted to investigate the potential performance characteristics of an isotope-Brayton space power system at electric power levels from 500 to 2500 W. Utilization of the Pu 238 heat source, or capsule, being developed for the Multi-Hundred Watt Radioisotope Thermoelectric Generator was assumed. A single-loop system design concept was selected. The design concept and results of first-order tradeoff studies of the effects of major system parameters on system performance are presented. Results of the study indicate the potential for high system efficiency and high specific power over the entire power range.
    Keywords: AUXILIARY SYSTEMS
    Type: AIAA PAPER 72-1059 , Joint Propulsion Specialist Conference; Nov 29, 1972 - Dec 01, 1972; New Orleans, LA; US
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Isotope Brayton electric power system for the 500 to 2500 watt range. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: An extensive study was conducted at the Lewis Research Center to evaluate an isotope Brayton electric power system for use in the 500 to 2500 W power range. The study emphasized overall system simplicity in order to reduce parasitic power losses and improve system reliability. The study included detailed parametric cycle analysis, conceptual component designs, and evaluation of system packaging. The study has resulted in the selection of a single-loop system (gas) with six major components including one rotating unit. Calculated net system efficiency varies from 23 to 28% over the power range. The use of the Pu-238 heat source being developed for the Multi-Hundred-Watt Radioisotope Thermoelectric Generator program was assumed.
    Keywords: NUCLEAR ENGINEERING
    Type: Intersociety Energy Conversion Engineering Conference; Sep 25, 1972 - Sep 29, 1972; San Diego, CA
    Format: text
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    NASA TECHNICAL REPORTS
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