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  • 1
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    Hydrogen from renewable energy - Photovoltaic/water electrolysis as an exemplary approach (1984)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: A feasibility study has been conducted for a NASA Kennedy Space Center liquid hydrogen/liquid oxygen production facility using solar cell arrays as the power source for electrolysis. The 100 MW output of the facility would be split into 67.6 and 32 MW portions for electrolysis and liquefaction, respectively. The solar cell array would cover 1.65 sq miles, and would be made up of 249 modular 400-kW arrays. Hydrogen and oxygen are generated at either dispersed or centralized water electrolyzers. The yearly hydrogen output is projected to be 5.76 million lbs, with 8 times that much oxygen; these fuel volumes can support approximately 18 Space Shuttle launches/year.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Solar/hydrogen systems for the 1985-2000 time frame - A review and assessment (1982)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: A comprehensive state-of-the-art review of solar/hydrogen technologies has been conducted. From this, solar/hydrogen production systems which could be commercialized by the year 2000 have been characterized technically and economically. Incentives and disincentives for the early commercialization of four solar/hydrogen systems have been explored, conclusions drawn and recommendations made.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: International Journal of Hydrogen Energy; 7; 1, 19; 1982
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Hydrogen uses and demands through the year 2025 (1982)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The magnitude and markets for applications of hydrogen produced by water-splitting through thermal or electrolytic means are projected up to the year 2025. Uses are divided into energy and nonenergy categories, with U.S. synfuels programs accounting for 65% of the increased demand for hydrogen. Applications for transportation fuel, as a natural gas supplement, in fuel cells, in refinery and synfuels industries, for synthesizing chemicals, and for manufacturing semiconductors are summarized. Electrolytic processes are noted to be more suitable for smaller scale production, where use is on-site or local. An annual growth of 8.4-9.2% is foreseen in the energy sector and 3-3.6% in the nonenergy sector, with a total contribution to the primary energy uses of 12-13% by the year 2025. Hydrogen's negligible environmental impact and the ability to interface hydrogen systems with existing equipment are seen as factors encouraging hydrogen-use growth.
    Keywords: ECONOMICS AND COST ANALYSIS
    Type: Chemical Engineering Progress; Jan. 198
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    ON THE UTILITY OF THE MOON IN SPACE TRANSPORTATION- THE LUNATRON CONCEPT (1963)
    In:  Other Sources
    Details
    Publication Date: 2018-12-01
    Description: Limitations of non-jet-reaction device for vehicle velocity augmentation, called the lunar-surface- based electromagnetically powered rail-launch concept /lunatron/
    Keywords: SPACE RADIATION
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Integral coolant channels supply made by melt-out method (1964)
    In:  CASI
    Details
    Publication Date: 2019-05-11
    Description: Melt-out method of constructing strong, pressure-tight fluid coolant channels for chambers is accomplished by cementing pins to the surface and by depositing a melt-out material on the surface followed by two layers of epoxy-resin impregnated glass fibers. The structure is heated to melt out the low-melting alloy.
    Keywords: MECHANICS
    Type: MFS-91
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Engine-integrated secondary injection side- force generation for the hydrogen-fueled rocket engine (1962)
    In:  CASI
    Details
    Publication Date: 2019-05-21
    Description: Engine-integrated secondary injection side-force generation for hydrogen-fueled rocket engine
    Keywords: PROPELLANTS
    Type: NASA-TM-X-51919 , MTP-P&VE-P-62-10
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Study of Systems and Technology for Liquid Hydrogen Production Independent of Fossil Fuels (1983)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Based on Kennedy Space Center siting and logistics requirements and the nonfossil energy resources at the Center, a number of applicable technologies and system candidates for hydrogen production were identified and characterized. A two stage screening of these technologies in the light of specific criteria identified two leading candidates as nonfossil system approaches. Conceptual design and costing of two solar-operated, stand alone systems, one photovoltaic based on and the other involving the power tower approach reveals their technical feasibility as sited as KSC, and the potential for product cost competitiveness with conventional supply approaches in the 1990 to 1210 time period. Conventional water hydrolysis and hydrogen liquefaction subsystems are integrated with the solar subsystems.
    Keywords: PROPELLANTS AND FUELS
    Type: NASA-CR-173422 , NAS 1.26:173422
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Hydrogen-via-electricity concept. Critique report (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The hydrogen-via-electricity (HvE) concept is the prospective use of hydrogen fuel produced electrolytically from the electric utility grid as a means of responding to conventional fuels shortages. The two sets of comments and critiques of this concept solicited from the Government/Government contractor group and from the electric utility companies are presented.
    Keywords: PROPELLANTS AND FUELS
    Type: NASA-CR-164546 , DOE/CE-0005
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Solar/hydrogen systems assessment. Volume 1: Solar/hydrogen systems for the 1985 - 2000 time frame (1980)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Opportunities for commercialization of systems capable of producing hydrogen from solar energy were studied. The hydrogen product costs that might be achieved by the four selected candidate systems was compared with the pricing structure and practices of the commodity gas market. Subsequently, product cost and market price match was noted to exist in the small user sector of the hydrogen marketplace. Barriers to and historical time lags in, commercialization of new technologies are reviewed. Recommendations for development and demonstration programs designed to accelerate the commercialization of the candidate systems are presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-CR-163392 , JPL-9950-379
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    A preliminary systems-engineering study of an advanced nuclear-electrolytic hydrogen-production facility (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An advanced nuclear-electrolytic hydrogen-production facility concept was synthesized at a conceptual level with the objective of minimizing estimated hydrogen-production costs. The concept is a closely-integrated, fully-dedicated (only hydrogen energy is produced) system whose components and subsystems are predicted on ''1985 technology.'' The principal components are: (1) a high-temperature gas-cooled reactor (HTGR) operating a helium-Brayton/ammonia-Rankine binary cycle with a helium reactor-core exit temperature of 980 C, (2) acyclic d-c generators, (3) high-pressure, high-current-density electrolyzers based on solid-polymer electrolyte technology. Based on an assumed 3,000 MWt HTGR the facility is capable of producing 8.7 million std cu m/day of hydrogen at pipeline conditions, 6,900 kPa. Coproduct oxygen is also available at pipeline conditions at one-half this volume. It has further been shown that the incorporation of advanced technology provides an overall efficiency of about 43 percent, as compared with 25 percent for a contemporary nuclear-electric plant powering close-coupled contemporary industrial electrolyzers.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-CR-144230
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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