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  • 1
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    Materials considerations (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Materials problems are examined that may be encountered within a hydrogen energy system. Emphasis is placed on hydrogen embrittlement, corrosion, oxidation, and erosion. Other factors discussed include: degradation of mechanical properties of structural alloys, system reliability, and maintenance costs.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: JPL Hydrogen Tomorrow; 10 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Liquid-hydrogen boiloff reliquifier (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Device uses Joule-Thomson expansion and pressure-relief cooling of compressed and cooled boiloff hydrogen to condense portion of gas. System could be used with cryogens such as helium, nitrogen, and oxygen.
    Keywords: PHYSICAL SCIENCES
    Type: KSC-11021 , NASA Tech Briefs (ISSN 0145-319X); 2; 1; P. 3
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Zero gravity liquid transfer screen (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A liquid transfer device for use in a zero gravity environment, for transferring liquid from one container to another is described. The device includes a spiral shaped screen type member which is carried in the container for collecting the randomly dispersed liquid and transferring such to an exit port.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Potential structural material problems in a hydrogen energy system (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Potential structural material problems that may be encountered in the three components of a hydrogen energy system - production, transmission/storage, and utilization - were identified. Hydrogen embrittlement, corrosion, oxidation, and erosion may occur during the production of hydrogen. Hydrogen embrittlement is of major concern during both transmission and utilization of hydrogen. Specific materials research and development programs necessary to support a hydrogen energy system are described.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-X-71752 , E-8380
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Floating baffle to improve efficiency of liquid transfer from tanks (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A floating baffle is described which rides up and down on a vertical shaft over a drain in a tank as the liquid level within the tank varies. When the baffle is in the raised position, the liquid is allowed to flow out of the drain at an unrestricted rate. When the baffle is in the lowered position, pull-through of air or gas that is above the liquid is presented, which would interfere and reduce the flow of liquid from the tank.
    Keywords: MACHINE ELEMENTS AND PROCESSES
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Floating baffle to improve efficiency of liquid transfer from tanks (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: When liquid tank is full, baffle is held up against a stop on top of shaft to prevent restriction of flow from outlet. As tank is being emptied, baffle, floating on top of liquid surface, descends with liquid level toward outlet until it reaches its bottom stop. Baffle prevents gas pull-through until practically all liquid is emptied from tank.
    Keywords: MACHINERY
    Type: KSC-10639
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Geysering inhibitor pipe (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Smaller concentric pipe is welded to main pipe beginning above bottom of isolation valve and terminating in storage tank at top. There is continuous circulation of fluid which maintains fluid temperature below boiling temperature of liquid oxygen.
    Keywords: MACHINERY
    Type: KSC-10615
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Zero gravity shadow shield aligner (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Apparatus for aligning shadow shields and cryogenic storage tanks in outer space with the sun
    Keywords: SPACE VEHICLES
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Cryogenic recovery (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Because of the low boiling temperature of cryogenic propellants to be used on the Space Shuttle, loss of cryogens from boiloff could become very costly. This paper describes how this shuttle problem is being solved at Kennedy Space Center. Cryogenic losses are categorized relative to the particular cryogenic involved, the Space Shuttle servicing operation causing boiloff and the magnitude of the loss. The techniques under consideration are discussed in detail. These techniques include reclaiming the boiloff by reliquefaction, upgrading the reclaimed boiloff by purification, and interim boiloff storage in metal hydride prior to reprocessing. One of the reliquefaction processes discussed in detail utilizes the cooling effect of venting some of the liquid hydrogen boiloff to provide a simple hydrogen reliquefaction unit. Possible future applications of these cryogenics recovery techniques to industry and transportation systems using liquid hydrogen for energy storage and fuel are also discussed.
    Keywords: PROPELLANTS AND FUELS
    Type: Technology for the new horizon; Apr 07, 1976 - Apr 09, 1976; Cocoa Beach, FL
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Potential structural material problems in a hydrogen energy system (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Potential structural material problems that may be encountered in the three components of a hydrogen energy system - production, transmission/storage, and utilization - have been identified. Hydrogen embrittlement, corrosion, oxidation, and erosion may occur during the production of hydrogen. Hydrogen embrittlement is of major concern during both transmission and utilization of hydrogen. Specific materials research and development programs necessary to support a hydrogen energy system are described. An awareness of probable shortages of strategic materials has been maintained in these suggested programs.
    Keywords: METALLIC MATERIALS
    Type: World Hydrogen Energy Conference; Mar 01, 1976 - Mar 03, 1976; Miami Beach, FL
    Format: text
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    NASA TECHNICAL REPORTS
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