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  • ENERGY PRODUCTION AND CONVERSION  (375)
  • Organic Chemistry  (363)
  • 1975-1979  (544)
  • 1955-1959  (194)
  • 1
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    Evaluation of selected chemical processes for production of low-cost silicon phase 2. silicon material task, low-cost silicon solar array project (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Progress from October 1, 1977, through December 31, 1977, is reported in the design of the 50 MT/year experimental facility for the preparation of high purity silicon by the zinc vapor reduction of silicon tetrachloride in a fluidized bed of seed particles to form a free flowing granular product.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-CR-157073 , DOE/JPL-954339-78/9 , QPR-3
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Nuclear waste disposal in space (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Work on nuclear waste disposal in space conducted by the George C. Marshall Space Flight Center, National Aeronautics and Space Administration, and contractors are reported. From the aggregate studies, it is concluded that space disposal of nuclear waste is technically feasible.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TP-1225 , M-250
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Design, fabrication, testing and delivery of a solar collector (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A two phase program encompassing the redesign and fabrication of a solar collector which is low in cost and aesthetically appealing is described. Phase one work reviewed the current collector design and developed a low-cost design based on specific design/performance/cost requirements. Throughout this phase selected collector component materials were evaluated by testing and by considering cost, installation, maintainability and durability. The resultant collector design was composed of an absorber plate, insulation, frame, cover, desiccant and sealant. In Phase two, three collector prototypes were fabricated and evaluated for both nonthermal and thermal characteristics. Tests included static load tests of covers, burst pressure tests of absorber plates, and tests for optical characteristics of selective absorber plate coatings. The three prototype collectors were shipped to Marshall Space Flight Center for use in their solar heating and cooling test facility.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-CR-144265 , C8092-PR-012
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Introductory assessment of orbiting reflections for terrestrial power generation (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The use of orbiting mirrors for providing energy to ground conversion stations to produce electrical power is shown to be a viable, cost effective and environmentally sound alternative to satellite solar power stations and conventional power sources. This is accomplished with the use of very light weight metal coated polymeric films as mirrors which, after deployment at 800 km, are placed in operational orbit and controlled by solar radiation pressure. Relations are developed showing the influence of a number of parameters (mirror altitude, orbit inclination, period, mirror size and number, and atmospheric effects) on the reflected insolation that may be received by a ground spot as a function of location. Some attractive alternative uses of the reflection are briefly discussed as a beneficial adjuncts to the system.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-73230 , A-6996
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Orbiting mirrors for terrestrial energy supply (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A system of orbiting reflectors termed 'SOLARES' is proposed as a means of reducing the diurnal variation and increasing the average intensity of sunlight for terrestrial solar power systems. The paper discusses orbital considerations for the placement of the reflectors, insolation profiles, ground conversion options, costs, and environmental and social effects.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Radiation energy conversion in space; Conference; Jan 26, 1978 - Jan 28, 1978; Moffett Field, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    SOLARES - A new hope for solar energy (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A system of orbiting reflectors, SOLARES, has been studied as a possible means of reducing the diurnal variation and enhancing the average intensity of sunlight with a space system of minimum mass and complexity. The key impact that such a system makes on the economic viability of solar farming and other solar applications is demonstrated. The system is compatible with incremental implementation and continual expansion to meet the world's power needs. Key technology, environmental, and economic issues and payoffs are identified. SOLARES appears to be economically superior to other advanced, and even competitive with conventional, energy systems and could be scaled to completely abate our fossil fuel usage for power generation. Development of the terrestrial solar conversion technique, optimized for this new artificial source of solar radiation, yet remains.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Alternative energy sources; Miami International Conference; Dec 05, 1977 - Dec 07, 1977; Miami Beach, FL
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Space reflector technology and its system implications (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The technical feasibility of providing nearly continuous solar energy to a world-distributed set of conversion sites by means of a system of orbiting, large-area, low-areal-density reflecting structures is examined. Requisite mirror area to provide a chosen, year-averaged site intensity is shown. A modeled reflector structure, with suitable planarity and ability to meet operational torques and loads, is discussed. Typical spatial and temporal insolation profiles are presented. These determine the sizing of components and the output electric power from a baselined photovoltaic conversion system. Technical and economic challenges which, if met, would allow the system to provide a large fraction of future world energy needs at costs competitive to circa-1995 fossil and nuclear sources are discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: AIAA PAPER 79-0545 , American Institute of Aeronautics and Astronautics, Annual Meeting and Technical Display; Feb 06, 1979 - Feb 08, 1979; Washington, DC
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Enhanced solar energy options using earth-orbiting mirrors (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A system of orbiting space reflectors is described, analyzed, and shown to economically provide nearly continuous insolation to preselected ground sites, producing benefits hitherto lacking in conventional solar farms and leading to large reductions in energy costs for such installations. Free-flying planar mirrors of about 1 sq km are shown to be optimum and can be made at under 10 g/sq m of surface, thus minimizing material needs and space transportation costs. Models are developed for both the design of such mirrors and for the analysis of expected ground insolation as a function of orbital parameters, time, and site location. Various applications (agricultural, solar-electric production, weather enhancement, etc.) are described.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Intersociety Energy Conversion Engineering Conference; Aug 20, 1978 - Aug 25, 1978; San Diego, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Energy consumption program: A computer model simulating energy loads in buildings (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The JPL energy consumption computer program developed as a useful tool in the on-going building modification studies in the DSN energy conservation project is described. The program simulates building heating and cooling loads and computes thermal and electric energy consumption and cost. The accuracy of computations are not sacrificed, however, since the results lie within + or - 10 percent margin compared to those read from energy meters. The program is carefully structured to reduce both user's time and running cost by asking minimum information from the user and reducing many internal time-consuming computational loops. Many unique features were added to handle two-level electronics control rooms not found in any other program.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: The Deep Space Network; p 288-289
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Design considerations for the Tandem Junction Solar Cell (1979)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Structure and operation of the tandem junction cell (TJC) are described. The impact of using only back contacts is discussed. A model is presented which explains operation of the TJC in terms of transistor action. The model is applied to predict TJC performance as a function of physical parameters.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Lewis Res. Center Solar Cell High Efficiency and Radiation Damage, 1979; p 79-85
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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