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  • ENERGY PRODUCTION AND CONVERSION  (673)
  • 1995-1999
  • 1980-1984
  • 1975-1979  (673)
  • 1925-1929
  • 1978  (673)
Collection
Keywords
Years
  • 1995-1999
  • 1980-1984
  • 1975-1979  (673)
  • 1925-1929
Year
  • 1
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    How much energy does energy cost? (1978)
    In:  CASI
    Details
    Publication Date: 2006-05-25
    Description: Estimating the energy cost of producing and delivering an energy product involves the quantitative determination of all relevant energy flows and the aggregation of these flows into meaningful indices of system performance. Five emerging energy technologies are subjected to energy analysis. The energy delivered by each is substantially greater than the energy consumed during construction and lifelong operation of the system. Net energy analysis can provide interesting and perhaps useful information regarding specific technologies, but it does not necessarily provide additional information essential to the making of decisions regarding those technologies.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Langley Res. Center Emerging Energy Alternatives for the Southeastern States; p 117-134
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  • 2
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    The impact of municipal refuse utilization on energy and our environment (1978)
    In:  CASI
    Details
    Publication Date: 2006-05-25
    Description: The incinerator/boiler configuration is stressed as the most reliable method of waste utilization. It is also pointed out that the high cost of refuse disposal and the ever increasing cost of energy, have made this method attractive. A plan is outlined for operating a waste utilization plant. Community participation is encouraged in investigating the feasibility of refuse to energy facilities in their area.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Emerging Energy Alternatives for the Southeastern States; p 95-116
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  • 3
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    Conservation as an alternative energy source (1978)
    In:  CASI
    Details
    Publication Date: 2006-05-25
    Description: A speech is given outlining the energy situation in the United States. It is warned that the existing energy situation cannot prevail and the time is fast running out for continued growth or even maintenance of present levels. Energy conservation measures are given as an aid to decrease U.S. energy consumption, which would allow more time to develop alternative sources of energy.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Langley Res. Center Emerging Energy Alternatives for the Southeastern States; p 87-94
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  • 4
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    Agricultural and industrial process heat (1978)
    In:  CASI
    Details
    Publication Date: 2006-05-25
    Description: The application of solar energy to agricultural and industrial process heat requirements is discussed. This energy end use sector has been the largest and it appears that solar energy can, when fully developed and commercialized, displace from three to eight or more quads of oil and natural gas in U.S. industry. This potential for fossil fuel displacement in the agricultural and industrial process heat area sector represents a possible savings of 1.4 to 3.8 million barrels of oil daily.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Langley Res. Center Emerging Energy Alternatives for the Southeastern States; p 59-86
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  • 5
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    Impact of novel energy sources: OTEC, wind, goethermal, biomass (1978)
    In:  CASI
    Details
    Publication Date: 2006-05-25
    Description: Alternate energy conversion methods such as ocean thermal energy conversion (OTEC), wind power, geothermal wells and biomass conversion are being explored, and re-examined in some cases, for commercial viability. At a time when United States fossil fuel and uranium resources are found to be insufficient to supply national needs into the twenty-first century, it is essential to broaden the base of feasible energy conversion technologies. The motivations for development of these four alternative energy forms are established. Primary technical aspects of OTEC, wind, geothermal and biomass energy conversion systems are described along with a discussion of relative advantages and disadvantages of the concepts. Finally, the sentiment is voiced that each of the four systems should be developed to the prototype stage and employed in the region of the country and in the sector of economy which is complimentary to the form of system output.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Langley Res. Center Emerging Energy Alternatives for Southeastern States; p 39-57
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  • 6
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    Wood energy-commercial applications (1978)
    In:  CASI
    Details
    Publication Date: 2006-05-25
    Description: Wood energy is being widely investigated in many areas of the country because of the many obvious benefits of wood fuel such as the low price per million Btus relative to coal, oil, and gas; the wide availability of noncommercial wood and the proven ability to harvest it; established technology which is reliable and free of pollution; renewable resources; better conservation for harvested land; and the potential for jobs creation. The Southeastern United States has a specific leadership role in wood energy based on its established forest products industry experience and the potential application of wood energy to other industries and institutions. Significant questions about the widespread usage of wood energy are being answered in demonstrations around the country as well as the Southeast in areas of wood storage and bulk handling; high capitalization costs for harvesting and combustion equipment; long term supply and demand contracts; and the economic feasibility of wood energy outside the forest products industry.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Langley Res. Center Emerging Energy Alternatives for the Southeastern States; p 27-38
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  • 7
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    Alternatives in solar energy (1978)
    In:  CASI
    Details
    Publication Date: 2006-05-25
    Description: Although solar energy has the potential of providing a significant source of clean and renewable energy for a variety of applications, it is expected to penetrate the nation's energy economy very slowly. The alternative solar energy technologies which employ direct collection and conversion of solar radiation as briefly described.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Langley Res. Center Emerging Energy Alternatives for the Southeastern States; p 19-25
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  • 8
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    An overview of the energy situation (1978)
    In:  CASI
    Details
    Publication Date: 2006-05-25
    Description: Beginning with a historical review of the domestic pattern of energy usage, the current dependence of the United States upon dwindling petroleum resources is examined. The possible limit of petroleum usage is discussed, and recent oil production trends are presented. Coupling these with projected analyses of OPEC oil productive capability in the early 1980's indicates a serious worldwide as well as American energy problem in the next decade. The need for conservation and rapid development of application of alternative energy resources is discussed including quantitative projections of significant conservation efforts as well as estimates of domestic alternative energy resource capabilities.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Langley Res. Center Emerging Energy Alternatives for the Sourtheastern States; p 7-18
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  • 9
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    IUE flight experience (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Nickel cadmium batteries were designed to provide an alternate booster energy source to the IUE satellite during eclipse periods. Data shows the spacecraft can operate over the three year design life and a five year design goal.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: 11th Ann. Battery Workshop; p 229-237
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  • 10
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    Single cell recongidioning test (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Reconditioning the voltage and current profiles, capacity discharge and current, and charge and discharge cycles are presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 171-181
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  • 11
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    Microprocessor controlled advanced battery management systems (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The advanced battery management system described uses the capabilities of an on-board microprocessor to: (1) monitor the state of the battery on a cell by cell basis; (2) compute the state of charge of each cell; (3) protect each cell from reversal; (4) prevent overcharge on each individual cell; and (5) control dual rate reconditioning to zero volts per cell.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 287-299
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  • 12
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    Tadiran-Plainview Electronics presentation (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Various environmental, mechanical, vibration, shock, etc., test were run on the manufacturer's lithium cells. The data obtained from these tests are graphically presented and briefly discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 531-538
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  • 13
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    High rate of reversal in Nicd cells (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Pressure response to reverse current, pressure decay after reversal, and discharge performance of nickel cadmium cells are presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 183-198
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  • 14
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    Tradeoff analysis with lithium cells (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Characteristic data, primarily on high rate lithium sulfur dioxide design (basically in the D and DD cell configuration), both before and after much exposure to environmental conditions are discussed. The environmental as opposed to signle cells. Discussion was generated among the Workshop participants and comments and questions are reported. Graphical representations of the test data are presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space FLight Center 11th Ann. Battery Workshop; p 475-487
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  • 15
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    Hazards of lithium thionyl chloride batteries (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Two different topics which only relate in that they are pertinent to lithium thionyl chloride battery safety are discussed. The first topic is a hazards analysis of a system (risk assessment), a formal approach that is used in nuclear engineering, predicting oil spills, etc. It is a formalized approach for obtaining assessment of the degree of risk associated with the use of any particular system. The second topic is a small piece of chemistry related to the explosions that can occur with lithium thionyl chloride systems. After the two topics are presented, a discussion is generated among the Workshop participants.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 449-458
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  • 16
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    Life test of NiH2 flight battery (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Life cycle tests being run on the 50 A lightweight nickel hydrogen flight battery are discussed and the preliminary results are presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 341-346
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  • 17
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    USAF nickel hydrogen cell (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Air Force activities in nickel hydrogen battery research were summarized. The latest developments for the past year were discussed and applications of the nickel hydrogen batteries were reviewed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 317-329
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  • 18
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    HCMM/SAGE test results (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The salient features of the nickel cadmium batteries used in the Heat Capacity Mapping Mission spacecraft and the SAGE satellite are presented. Life tests, battery profiles, and recommendations for structural improvement are reported.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: 11th Ann. Battery Workshop; p 271-285
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  • 19
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    NTS-2 battery after 1 year and 3 eclipse seasons (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The performance of the nickel hydrogen batteries on board the NTS-2 satellite was determined after being in orbit for several months. The effects of the eclipses were presented as well as the power loading operations.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 309-315
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  • 20
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    RCA Satcom in orbit: Reconditioning and flight experience (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The performance of the nickel cadmium batteries on the SATCOM in orbit, and the effects of aging and changes in temperature due to eclipses are described. A description of the battery reconditioning is presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 253-265
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  • 21
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    Standard cell data (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Performance tests of the mechanical designs of nickel cadmium cells are presented. The framework of the manufacturing and processing of these cells is described.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: 11th Ann. Battery Workshop; p 163-170
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  • 22
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    Synchronous orbit models (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The NASA guidelines for synchronous orbits are presented. Mathematical models are developed which encompass all test variables and systems engineering.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 149-154
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  • 23
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    Safety characteristics of the lithium SO2 system (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Extensive tests were conducted to quantitatively define the safety characteristics of high-rate SO2 multicell batteries under various discharge and temperature profiles, which closely simulated actual field-use conditions. The resulting behavior patters of the multicell batteries and the corrective action which can be implemented to minimize or prevent hazardous battery performance are briefly summarized.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 539-548
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  • 24
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    Life testing of Mallory cells (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Tests were performed to assess the effects of storage time, storage temperature, vibration, discharge rate and temperature, and capacity of high-rate, D size, lithium sulfur dioxide cells. Data from these tests are discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 489-497
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  • 25
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    Characteristics of Li-SOCl2 cells (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: A general discussion of the characteristics of Li-SOC12 cells is presented. Three different shaped cells were selected for study; prismatic, cylindrical, and disc. The characteristics of the cells were obtained through nondestructive and destructive testing which are discussed. Graphs are presented which represent the various parameters investigated. Workshop participant comments and questions are also included.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA Goddard Space FLight Center 11th Ann. Battery Workshop; p 465-474
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  • 26
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    Seal problems of lithium cells (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The problem of leakage through a seal in lithium cells is addressed. The use of ceramic and glass-to-metal seals is briefly discussed. Comments are presented from the Workshop participants.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 459-464
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  • 27
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    US Army lithium cell applications (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The how, why and where the Army is applying lithium batteries are addressed. The Army is committing its efforts to the utilization of lithium batteries in new equipment that will be going into the field possibly from FY-80 and thereafter. The Army's philosophy is to guide their users and the equipment designers, to use battery packs are opposed to singel cells. After a detailed description of the battery types that are being considered, a discussion is presented in which questions and comments are exchanged among the Workshop participants.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space FLight Center, 11th Ann. Battery Workshop; p 441-448
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  • 28
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    Common pressure vessel battery performance (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Performance tests run on two common pressure vessel type nickel hydrogen batteries are described and the results presented. The study included: (1) charge retention tests, (2) synchronous eclipse season cycling tests, and (3) temperature differential tests.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 361-370
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  • 29
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    NASA lithium cell applications (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The advantages of lithium systems are described and a general summary of their application in present and future NASA programs is presented. Benefits of the lithium systems include an increased payload weight and an increased cost effectiveness to the customer. This also allows for more flexibility in the design of future space transportation systems.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 395-410
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  • 30
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    Silver hydrogen voltage/pressure performance (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: High pressure tests were run on silver hydrogen cells in order to determine: (1) the self discharge characteristics at 1000 and 2000 psig; (2) the state of charge parameters; and (3) the trickle charge rates. These results were then compared with pressure test results from a nickel hydrogen cell.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 383-391
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  • 31
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    Configuration analysis of nickel hydrogen cell (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The significance of various stack configurations and components on the cycle life for nickel hydrogen cells for synchronous orbit used was evaluated. Failure modes of electrolyte management and 02 management were solved by modifications in the reservoir, the wick, and/or the stack configuration.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 347-359
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  • 32
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    Acceptance test data on Hughes-USAF lightweight nickel hydrogen cells (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Cell capacity, stabilization cycling, and failure analysis data on 50 A hour lightweight nickel hydrogen cells is presented and discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 331-340
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  • 33
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    Parallel battery test results (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The effects of disabling and enabling the charger on one of two batteries that are operating in a parallel mode are discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: 11th Ann. Battery Workshop; p 201-211
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  • 34
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    Hughes/GE improved NiCd cell design (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Synchronous orbit and elliptical orbit life tests are used to make improvements in cell design for spacecraft application. The test increased the electrolyte volume and the surface area in cells to reduce the current density on charge and discharge.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 155-162
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  • 35
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    Data analysis for the accelerated test (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Test variables discussed graphically include the effects of: (1) ambient temperature; (2) depth of the discharge; (3) discharge rate; (4) percent of recgargel (5) KOH concentration; (6) KOH volume; (7) charge rate and (8) negative per charge.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 110-117
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  • 36
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    Ceramic-metal seals for advanced battery systems (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The search for materials which are electrochemically compatible with the lithium sulfur and sodium sulfur systems is discussed. The use liquid or braze alloys, titanium hydrite coatings, and tungsten yttria for bonding beryllium with ceramic is examined.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 87-100
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  • 37
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    Comparison of cells with Pellon 2503 and 2505 separator (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Unlike the 2505 nonwoven nylon separator material which has fibers in a random direction, the 2503 material has fibers oriented all in one direction. Properties of the two materials discussed include density, porosity, absorptivity, electrolyte retention, capacity, and charge voltage pressure. With only 1,000 test cycles completed, it is not possible to determine whether 2503 is a suitable substitute.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: 11th Ann. Battery Workshop; p 57-63
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  • 38
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    Accelerated test program at Crane (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Statistical analysis of work performed, the present status, and the future plans of the program are summarized.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 103-109
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  • 39
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    Characterization of degraded nickel cadmium cells (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Various cells were cycled until degradation and then tested to determine the electrochemical characterization of the cells with regard to charge control. A constant voltage charged to a temperature-biased voltage, using up to an 8-voltage limit was used for the evaluation. Graphs show severe discharge voltage degradation with cycling and periodic capacity discharge; voltage extremes for cells with and without periodic capacity discharges; voltage extremes for cells with high rate discharge; voltage-temperature levels used for charge control; end of charge current and discharge voltage for 5 percent DOD cycling; cell capacity following 5 percent DOD cycling; and the end of discharge voltage and typical charge current profiles for the 20 percent DOD cycling.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 65-74
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  • 40
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    Lightweight porous plastic plaque (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The porosity and platability of various materials were investigated to determine a suitable substrate for nickel-plated electrodes. Immersion, ultrasonics, and flow-through plating techniques were tried using nonproprietary formulations, and proprietary phosphide and boride baths. Modifications to the selected material include variations in formulation and treatment, carbon loading to increase conductivity, and the incorporation of a grid. Problems to be solved relate to determining conductivities and porosities as a function of amount of nickel plated on the plastics; loading; charge and discharge curves of electrodes at different current densities; cell performance; and long-term degradation of electrodes.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 31-42
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  • 41
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    Accelerated test modeling (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Cycle life regression model, cycle life prediction model, and acceleration factors are discussed. A method was presented to: (1) select a mathematical model; (2) determine model coefficients using accelerated test data; (3) test model fit of the accelerated test data; and (4) predict normal packs.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 119-133
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  • 42
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    Dynamics of cell degradation (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The use of chemical and physical data as a supplement to linear regression models in the prediction of cell failure is discussed. Principal factors to be considered are the positive thickness and weight, and the negative thickness. A model for cell degradation and failure in accelerated life test cells is presented and predictions based on a teardown analysis are included.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 75-85
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  • 43
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    Applications and safety data (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: A general overview of activities involving lithium batteries, which shows the various applications and data that were performed for numerous industry and government sponsors is presented. Brief discussions on electrochemical criteria selection, and typical storage and performance data obtained from three systems being developed are presented. Current safety work being done on high-rate, D, SO2 cells is also discussed. Three chemistries were developed and are discussed: lithium vanadium pentoxide, lithium sulfur dioxide, and lithium thionyl chloride. Storage, performance and safety data are graphically presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 511-530
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  • 44
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    Large cells and their performance (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Some of the large primary cells presently made, ranging from 2,000 to 10,000 ampere-hours are discussed. Performance data obtained on a 2,000 ampere-hour cell are graphically presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 499-503
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  • 45
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    NASA's lithium cell technology program (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Briefly outlined are the activities of the various research centers involved in the NASA program. Graphs are presented for: (1) the initial results on SOCl2 decomposition rate; (2) effect of rate on output of Li-SOCl2 cells; (3) comparison of high and low rate Li-SOCl2 cells; and (4) effect of temperature on output of Li-SOCl2 cells. Abusive test results and a description of secondary lithium cells are also presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 431-440
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  • 46
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    Silver hydrogen batteries (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The feasibility of silver hydrogen batteries was investigated. Cell configurations and cell cycling were discussed. Energy density was found to be 65 to 100 watt hours per kilogram. Electrolyte management was considered critical to the cell's performance. Factors of electrolyte management which were particularly important were: (1) the nature of the separator system, and (2) the amount of electrolyte.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 371-381
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  • 47
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    US Navy lithium cell applications (1978)
    In:  CASI
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    Publication Date: 2006-01-12
    Description: Applications of lithium systems that are already in the fleet are discussed. The approach that the Navy is taking in the control of the introduction of lithium batteries into the fleet is also discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop 411-420 (SEE N79-28669 19-44)
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  • 48
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    Air Force electrochemical impregnation process results (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The status of the Air Force Electrochemical program was reviewed. The performance characteristics of the system was attributed to the use of an electrochemical impregnation process. The electrode improvements, the prototype equipment designs, and the actual construction of a production facility are discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 303-308
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  • 49
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    Synopsis of Viking flight data (1978)
    In:  CASI
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    Publication Date: 2006-01-12
    Description: The temporary failure of the data collection hardware along with the fifty percent degradation on the batteries in lander 1 were discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 249-251
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  • 50
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    Canadian Technology Satellite, an update (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: An update on the performance of the nickel cadmium batteries on the Communications Technology Satellite is presented. The wattage and capacity during the winter and summer solstices are pointed out.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 267-269
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  • 51
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    Viking flight data after 24 months on Mars surface (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: An update of the Viking landers after two years of operation is presented along with an evaluation of the battery system aboard the spacecrafts which supplied them with an alternate booster energy source.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 239-247
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  • 52
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    Safety and abuse testing (1978)
    In:  CASI
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    Publication Date: 2006-01-12
    Description: A series of abuse tests on large lithium thionyl chloride cells was initiated. Performance data obtained in testing rectangular 2,000 and 10,000 ampere-hour cells are discussed and graphically presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 505-510
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  • 53
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    Nonlinear prediction modeling for accelerated testing (1978)
    In:  CASI
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    Publication Date: 2006-01-12
    Description: Empirical equation derived from cycles-to-failure, temperature cells, and prediction of normal packs are presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 135-147
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  • 54
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    Cell design and manufacturing changes during the past decade (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Eight of the most important changes that occurred in the GE 12 AH cell over the past ten years, which are currently being used are evaluated, and a systematic approach to compare their relative merits is presented. Typical positive thickness, typical negative thickness, positive loading, negative loading, final KOH quantity, and precharge as adjustment are shown for the control cell, and the following variables: Teflon treatment; silver treatment; light loading; no PQ treatment; polypropylene separator; the A.K. 1968 plate design no PQ, old elec process, no decarb process and the A.K. 1968 plate design, no PQ, present aerospace processes. The acceptance test cell voltage and cell pressure performance and capacity test results are included.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: 11th Ann. Battery Workshop; p 49-56
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  • 55
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    Voltage/temperature charge characteristics (1978)
    In:  CASI
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    Publication Date: 2006-01-12
    Description: A series of nickel cadmium batteries were tested to determine the effects of boltages and various temperatures on the charge discharge ratios and the recharge percentage. It was concluded that the selection of a proper temperature should consider the satellite orbit characteristics, the cell operating characteristics, the battery operating temperature range, and the final taper charge current.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 213-228
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  • 56
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    Chemical analysis of positive and negative plates, a survey (1978)
    In:  CASI
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    Publication Date: 2006-01-12
    Description: Regular arrays of 1 inch discs cut from chemically impregnated positive and negative plates were sent to various contractors and government organizations for chemical analysis in order to determine whether there is consistency in analysis. Techniques used included NASA procedures as specified, variations, wet chemical techniques, and atomic absorption. The weight, thickness of disc, and active material quantity as measured by four respondents are discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: 11th Ann. Battery Workshop; p 43-48
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  • 57
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    Lightweight electrodes (1978)
    In:  CASI
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    Publication Date: 2006-01-12
    Description: The fabrication of a lightweight composite nickel hydroxide electrode based on nickel-coated graphite is described and its effect on the load to failure and electrical resistivity of nickel cadmium and nickel zinc systems was evaluated. The use pure lead in lead acid batteries for submarines is also discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 17-30
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  • 58
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    Energy consumption program: A computer model simulating energy loads in buildings (1978)
    In:  Other Sources
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    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
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  • 59
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    Cogeneration power systems (1978)
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    Publication Date: 2011-08-17
    Description: Cogeneration is defined as the combination of electrical generation and process heat for more efficient use of fuel. Comparisons of energy utilization in conventional electric power plants and cogeneration electric power plants are presented. Characteristics of various cogeneration systems are also presented. Systems are analyzed for use in utility systems and industrial systems. Economic and cost analysis are reviewed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Proc. of the Alternate Energy Systems Seminar; p 68-96
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  • 60
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    ECAS Phase I fuel cell results (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: This paper summarizes and discusses the fuel cell system results of Phase I of the Energy Conversion Alternatives Study (ECAS). Ten advanced electric powerplant systems for central-station baseload generation using coal were studied by NASA in ECAS. Three types of low-temperature fuel cells (solid polymer electrolyte, SPE, aqueous alkaline, and phosphoric acid) and two types of high-temperature fuel cells (molten carbonate, MC, and zirconia solid electrolyte, SE) were studied. The results indicate that (1) overall efficiency increases with fuel cell temperature, and (2) scale-up in powerplant size can produce a significant reduction in cost of electricity (COE) only when it is accompanied by utilization of waste fuel cell heat through a steam bottoming cycle and/or integration with a gasifier. For low-temperature fuel cell systems, the use of hydrogen results in the highest efficiency and lowest COE. In spite of higher efficiencies, because of higher fuel cell replacement costs integrated SE systems have higher projected COEs than do integrated MC systems. Present data indicate that life can be projected to over 30,000 hr for MC fuel cells, but data are not yet sufficient for similarly projecting SE fuel cell life expectancy.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Journal of Energy; 2; Jan
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  • 61
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    Control of wind turbine generators connected to power systems (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: A unique simulation model based on a Mode-O wind turbine is developed for simulating both speed and power control. An analytical representation for a wind turbine that employs blade pitch angle feedback control is presented, and a mathematical model is formulated. For Mode-O serving as a practical case study, results of a computer simulation of the model as applied to the problems of synchronization and dynamic stability are provided. It is shown that the speed and output of a wind turbine can be satisfactorily controlled within reasonable limits by employing the existing blade pitch control system under specified conditions. For power control, an additional excitation control is required so that the terminal voltage, output power factor, and armature current can be held within narrow limits. As a result, the variation of torque angle is limited even if speed control is not implemented simultaneously with power control. Design features of the ERDA/NASA 100-kW Mode-O wind turbine are included.
    Keywords: ENERGY PRODUCTION AND CONVERSION
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  • 62
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    Theory and applications for optimization of every part of a photovoltaic system (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: A general method is presented for quantitatively optimizing the design of every part and fabrication step of an entire photovoltaic system, based on the criterion of minimum cost/Watt for the system output power. It is shown that no element or process step can be optimized properly by considering only its own cost and performance. Moreover, a fractional performance loss at any fabrication step within the cell or array produces the same fractional increase in the cost/Watt of the entire array, but not of the full system. One general equation is found to be capable of optimizing all parts of a system, although the cell and array steps are basically different from the power-handling elements. Applications of this analysis are given to show (1) when Si wafers should be cut to increase their packing fraction; and (2) what the optimum dimensions for solar cell metallizations are. The optimum shadow fraction of the fine grid is shown to be independent of metal cost and resistivity as well as cell size. The optimum thicknesses of both the fine grid and the bus bar are substantially greater than the values in general use, and the total array cost has a major effect on these values. By analogy, this analysis is adaptable to other solar energy systems.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Solar Energy; 21; 2, 19; 1978
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    The advanced thermionic converter with microwave power as an auxiliary ionization source (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: In the search for auxiliary sources of ionization for the advanced thermionic converter plasma, as required for terrestial applications, the use of externally applied microwave power is considered. The present work is part of the advanced model thermionic converter development research currently performed at the laboratory for Power and Environmental Studies at SUNY Buffalo. Microwave power in the frequency range 1-3 GHz is used to externally pump a thermionic converter and the results are compared to the theoretical model proposed by Lam (1976) in describing the thermionic converter plasma. The electron temperature of the plasma is found to be raised considerably by effective microwave heating which results in the disappearance of the double sheath ordinarily erected in front of the emitter. The experimental data agree satisfactorily with theory in the low current region.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Energy Conversion; 18; 3, 19; 1978
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  • 64
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    A graphical approach to the efficiency of flat-plate collectors (1978)
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    Publication Date: 2011-08-17
    Description: A nomogram is described which can be used to determine the thermal performance of flat plate solar collectors, resulting in two performance factors: the net absorptance and the net heat loss coefficient. The nomogram takes into account angle of incidence, collector slope, absorber plate design, insulating materials, thicknesses, optical properties of absorbing surfaces and glazing materials, and flow factors. A case example is given to illustrate the use of the nomogram.
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    Selling solar energy as a cash crop (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The paper considers solar energy equipment which, besides supplying energy for farmstead needs, would convert excess energy to a transportable form to sell to a power company. It is suggested that a concentrating two-axis tracking spheroidal collector would cost as little as $5/sq ft if mass produced. The proposed system uses 7854 sq ft of collector area (set in about one acre of land), and the cost payback is estimated.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Agricultural Engineering; 59; Mar. 197
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  • 66
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    Recovery of shallow junction GaAs solar cells damaged by electron irradiation (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Solar cells operated in space are subject to degradation from electron and proton radiation damage. It has been found that for deep junction p-GaAlAs/p-GaAs solar cells some of the electron radiation damage is removed by annealing the cells at 200 C. The reported investigation shows that shallow junction p-GaAlAs/p-GaAs/n-GaAs heteroface solar cells irradiated with 1 MeV electrons show a more complete recovery of short-circuit current than do the deep junction cells. The heteroface p-GaAlAs/p-GaAs/n-GaAs solar cells studied were fabricated using the etch-back epitaxy process.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Electrochemical Society; vol. 125
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    A Schottky-barrier solar cell on sliced polycrystalline GaAs (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Antireflecting-metal-oxide-semiconductor (AMOS) technology has been applied to sliced wafers of polycrystalline GaAs having grain sizes of about 100 microns. Simulated AM1 sunlight efficiencies up to 14% were obtained, and studies using the scanning electron microscope showed that grain boundaries have a minimal effect on short-circuit current density. However, current-voltage characteristics show some influence on open-circuit voltage.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Applied Physics Letters; 33; Sept. 1
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  • 68
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    CO2 laser-driven Stirling engine (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: A 100-W Beale free-piston Stirling engine was powered remotely by a CO2 laser for long periods of time. The engine ran on both continuous-wave and pulse laser input. The working fluid was helium doped with small quantities of sulfur hexafluoride, SF6. The CO2 radiation was absorbed by the vibrational modes of the sulfur hexafluoride, which in turn transferred the energy to the helium to drive the engine. Electrical energy was obtained from a linear alternator attached to the piston of the engine. Engine pressures, volumes, and temperatures were measured to determine engine performance. It was found that the pulse radiation mode was more efficient than the continuous-wave mode. An analysis of the engine heat consumption indicated that heat losses around the cylinder and the window used to transmit the beam into the engine accounted for nearly half the energy input. The overall efficiency, that is, electrical output to laser input, was approximately 0.75%. However, this experiment was not designed for high efficiency but only to demonstrate the concept of a laser-driven engine. Based on this experiment, the engine could be modified to achieve efficiencies of perhaps 25-30%.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Journal of Energy; 2; July-Aug
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  • 69
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    The solar power satellite concept - A space program perspective (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The Space Shuttle will reduce the cost of transportation to space from thousands of dollars per pound to hundreds of dollars per pound. Studies of future systems indicate that these costs may be further reduced to tens of dollars per pound by using large space freighters, which would be required to build solar power satellites. It is pointed out that the Space Shuttle will provide a versatile tool in the 1980's to support the exploration of the solar power satellite concept as well as other space programs of the future. Three apparently different applications, related to materials processing in space, advanced satellite communications, and solar power satellites, have a number of common requirements. These include the need for large solar power arrays in space and/or the need to construct large systems in space. Consequently, a space program which includes development of the techniques for large power supplies and structural systems provides the basis for selecting and implementing any or all of these promising applications.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Journal of Energy; 2; July-Aug
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  • 70
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    Irradiance for skew rays incident upon a trough-like solar collector of arbitrary shape (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Solar Energy; 20; 1, 19; 1978
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  • 71
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    System considerations (1978)
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    Publication Date: 2011-08-17
    Description: Closing remarks and a general summary of the Alternative Energy Systems Seminar are presented. It was concluded from the seminar that the DOE programs described were focused on trying to make a commercial market develop for the various systems. The question addressed is how this is going to happen. To address this question, social, economical, political and technical aspects are considered with major emphasis placed on systems engineering to provide low cost efficient systems.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Proc. of the Alternate Energy Systems Seminar; p 171-177
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  • 72
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    Wind energy systems (1978)
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    Description: A discussion on wind energy systems involved with the DOE wind energy program is presented. Some of the problems associated with wind energy systems are discussed. The cost, efficiency, and structural design of wind energy systems are analyzed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Proc. of the Alternate Energy Systems Seminar; p 150-170
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  • 73
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    Solar heating and cooling (1978)
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    Publication Date: 2011-08-17
    Description: To emphasize energy conservation and low cost energy, the systems of solar heating and cooling are analyzed and compared with fossil fuel systems. The application of solar heating and cooling systems for industrial and domestic use are discussed. Topics of discussion include: solar collectors; space heating; pools and spas; domestic hot water; industrial heat less than 200 F; space cooling; industrial steam; and initial systems cost. A question and answer period is generated which closes out the discussion.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Proc. of the Alternate Energy Systems Seminar; p 126-149
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  • 74
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    Solar photovoltaic systems (1978)
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    Publication Date: 2011-08-17
    Description: The Department of Energy's photovoltaic program is outlined. The main objective of the program is the development of low cost reliable terrestrial photovoltaic systems. A second objective is to foster widespread use of the system in residential, industrial and commercial application. The system is reviewed by examining each component; silicon solar cell, silicon solar cell modules, advanced development modules and power systems. Cost and applications of the system are discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Proc. of the Alternate Energy Systems Seminar; p 5-42
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  • 75
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    Solar thermal systems (1978)
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    Publication Date: 2011-08-17
    Description: A system is described for producing electricity with the use of conventional machinery, but with the elimination of conventional fuels, through the use of sun energy. The economics of the system is presented by comparing solar thermal units with more conventional systems. Several applications of the solar thermal system are presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Proc. of the Alternate Energy Systems Seminar; p 97-125
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  • 76
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    Geothermal systems (1978)
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    Description: Several tasks of JPL related to geothermal energy are discussed. The major task is the procurement and test and evaluation of a helical screw drive (wellhead unit). A general review of geothermal energy systems is given. The presentation focuses attention on geothermal reservoirs in California, with graphs and charts to support the discussion. Included are discussions on cost analysis, systems maintenance, and a comparison of geothermal and conventional heating and cooling systems.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Proc. of the Alternate Energy Systems Seminar; p 43-67
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  • 77
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    Diffusion lengths in amphoteric GaAs heteroface solar cells (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Minority-carrier diffusion lengths in amphoteric GaAs:Si were investigated. Electron and hole diffusion lengths in p- and n-type, respectively, were determined to be 13 microns and 7 microns. Preliminary efficiency measurements on heteroface structures based on amphoteric GaAs:Si p-n junctions indicated that these devices should make excellent solar cells.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Applied Physics Letters; 32; Mar. 15
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  • 78
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    A simple theory of back surface field /BSF/ solar cells (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: A theory of an n-p-p/+/ junction is developed, entirely based on Shockley's depletion layer approximation. Under the further assumption of uniform doping the electrical characteristics of solar cells as a function of all relevant parameters (cell thickness, diffusion lengths, etc.) can quickly be ascertained with a minimum of computer time. Two effects contribute to the superior performance of a BSF cell (n-p-p/+/ junction) as compared to an ordinary solar cell (n-p junction). The sharing of the applied voltage among the two junctions (the n-p and the p-p/+/ junction) decreases the dark current and the reflection of minority carriers by the builtin electron field of the p-p/+/ junction increases the short-circuit current. The theory predicts an increase in the open-circuit voltage (Voc) with a decrease in cell thickness. Although the short-circuit current decreases at the same time, the efficiency of the cell is virtually unaltered in going from a thickness of 200 microns to a thickness of 50 microns. The importance of this fact for space missions where large power-to-weight ratios are required is obvious.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Journal of Applied Physics; 49; June 197
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  • 79
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    Comparative radiation resistance calculation for graded- and constant-composition n Al/x/Ga/1-x/As-p Al/z/Ga/1-z/As solar cells (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The performance and radiation resistance of a new double-graded-band-gap solar cell are theoretically determined. The performance of this device is similar to that of the single-graded-band-gap cell. The power-conversion efficiencies of both graded-band-gap structures are shown to be less sensitive to minority-carrier lifetime degradation than a similar constant-composition heteroface cell.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Journal of Applied Physics; 49; June 197
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  • 80
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    High temperature thermal energy storage, including a discussion of TES integrated into power plants (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Storage temperatures of 260 C and above are considered. Basic considerations concerning energy thermal storage are discussed, taking into account general aspects of thermal energy storage, thermal energy storage integrated into power plants, thermal storage techniques and technical considerations, and economic considerations. A description of system concepts is provided, giving attention to a survey of proposed concepts, storage in unpressurized fluids, water storage in pressurized containers, the use of an underground lined cavern for water storage, a submerged thin insulated steel shell under the ocean containing pressurized water, gas passage through solid blocks, a rock bed with liquid heat transport fluid, hollow steel ingots, heat storage in concrete or sand, sand in a fluidized bed, sand poured over pipes, a thermal energy storage heat exchanger, pipes or spheres filled with phase change materials (PCM), macroencapsulated PCM with heat pipe concept for transport fluid, solid PCM removed from heat transfer pipes by moving scrapers, and the direct contact between PCM and transport fluid.
    Keywords: ENERGY PRODUCTION AND CONVERSION
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  • 81
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    Continuous extrusion of coal (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: A feeding method for use with bituminous coals that exhibit plasticity at elevated temperatures is described and demonstrated on a small screw extruder previously used to extrude polyethylene. A metered feed of coal heated to a temperature just below that of incipient caking (approximately 450 C) is used. Modifications to the extruder consisting of ceramic band heaters, auxiliary cooling coils on the thrust bearing and special quick opening dies are detailed. Coals successfully extruded include high volatile A bituminous coals, high volatile B bituminous coals, a high volatile C bituminous coal and a coal with high ash content. The computer program, EXTRUD, used to simulate the extruder is described. Predicted power consumption exhibits 30% scatter, which is explained by the sensitivity of the coal friction coefficient to temperature profiles. Detailed analysis reveals some discrepancies in the program that need to be resolved.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Chemical Engineering Progress; Aug. 197
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  • 82
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    Emitter current suppression in a high-low-junction emitter solar cell using an oxide-charge-induced electron accumulation layer (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Applied Physics Letters; 33; July 15
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  • 83
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    Catalytic hydrosolvation process converts coal to low-sulfur liquid fuel (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Development of the catalytic hydrosolvation process for converting coal to low-sulfur fuel oil is described in this paper. Coal impregnated with catalyst was slurried with oil, and the mixture was hydrogenated at a temperature of 475 C, and 30 min residence time under 3600 psi pressure. A ton of coal yielded 3.5 bbl of fuel oil containing 0.2% sulfur, with naphtha and C1-C4 hydrocarbon gases as byproducts. A preliminary economic evaluation of the process indicated potential for further development.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Energy Sources; 3; 3-4,; 1978
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  • 84
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    Characteristics of a typical village in the solar belt of the developing countries of Asia, Africa, and Latin America (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The economic development of a typical village is presented. The village requirements, basic energy needs of the village, and financing of rural electrification programs are discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: OAO Corp. Proc. of the US DOE Photovoltaics Technol. Develop. and Appl. Program Rev.; p 1-269 - 1-283
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  • 85
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    Photovoltaics and environmental impact considerations (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: An analysis and description is presented for the proposed Airport Solar Photovoltaic Concentrator Project. The environmental effects and potential impacts of the test facilities are discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: OAO Corp. Proc. of the US DOE Photovoltaics Technol. Develop. and Appl. Program Rev.; p 1-225 - 1-267
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  • 86
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    Photovoltaic research and development status (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The goals of the Photovoltaic R&D Program are to develop thin film semiconductor and novel photovoltaic conversion concepts, and to demonstrate the feasibility of producing these cells for a price of $100 - $300 per peak electric output (in 1975) by FY1985. The approaches that are used to determine which research should be funded are formal solicitations, an innovative concepts program which will be launched in FY79, and the review of unsolicited proposals.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: OAO Corp. Proc. of the US DOE Photovoltaics Technol. Develop. and Appl. Program Rev.; p 1-211 - 1-223
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  • 87
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    DOE photovoltaic tests and applications project (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The installation date, system and location, and solar arrays are tabulated.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: OAO Corp. Proc. of the US DOE Photovoltaics Technol. Develop. and Appl. Program Rev.; p 1-166 - 1-179
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  • 88
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    Solar photovoltaic field tests and applications project (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Technical credibility of solar cell power systems is presented. The reduction costs for photovoltaic power systems is discussed. Field tests in the residential demand sector were conducted.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: OAO Corp. Proc. of the US DOE Photovoltaics Technol. Develop. and Appl. Program Rev.; p 1-181 - 1-194
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  • 89
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    Status of the DOE photovoltaic concentrator development project (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Photovoltaic concentrator technology resulting in low cost, long-life photovoltaic arrays at a price of less than $0.50 per peak watt by 1986 was developed. Concentrator concepts are identified which have the highest potential for low-cost long life by supporting concept development and evaluation, improving solar array manufacturing technology and by increasing solar array production capacity and quantity.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: OAO Corp. Proc. of the US DOE Photovoltaics Technol. Develop. and Appl. Program Rev.; p 1-139 - 1-165
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  • 90
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    LSA engineering status (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Module engineering activities, environmental testing in research and development, and module requirement generation are discussed in the solar array project.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: OAO Corp. Proc. of the US DOE Photovoltaics Technol. Develop. and Appl. Program Rev.; p 1-122 - 1-131
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  • 91
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    Low-cost solar array project (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Technology development and technical feasibility are reviewed. Process and materials candidates to meet project goals were investigated. Integration of technical development with cost estimates is discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: OAO Corp. Proc. of the US DOE Photovoltaics Technol. Develop. and Appl. Program Rev.; p 1-93 - 1-121
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  • 92
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    A summary of systems definition project activities (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Design information and subsystem requirement definition to the overall program is presented. Application analysis and conceptual design for the wide variety of systems, system tradeoff studies and engineering design for the more promising application types, and the identification of the technology status and requirements for major subsystems and components are described. The residential design and analysis contracts, hybrid photovoltaic/solar thermal electric conversion contract, and development of prototype combined photovoltaic/thermal flat-plate collectors were studied.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: OAO Corp. Proc. of the US DOE Photovoltaics Technol. Develop. and Appl. Program Rev.; p 1-23 - 1-91
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  • 93
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    Planning and analysis for development of photovoltaic energy conversion systems (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The project areas discussed include: (1) demand and decision analysis; (2) market analysis; (3) institutional analysis; (4) social cost analysis; and (5) performance and standard analysis.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: OAO Corp. Proc. of the US DOE Photovoltaics Technol. Develop. and Appl. Program Rev.; p 1-16 - 1-22
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  • 94
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    Photovoltaic mission analysis (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Photovoltaic analysis was used to support the planning, development, and guidance of the National Photovoltaic program. The analysis identified and evaluated: (1) photovoltaic applications likely to have major energy impact; (2) appropriate strategies for stimulating the growth of photovoltaic markets; and (3) critical issues, define scope of subsequent examinations.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: OAO Corp. Proc. of the US DOE Photovoltaics Technol. Develop. and Appl. Program Rev.; p 1-1 - 1-15
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  • 95
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    Research of low cost wind generator rotors (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A feasibility program determined that it would be possible to significantly reduce the cost of manufacturing wind generator rotors by making them of cast urethane. Several high modulus urethanes which were structurally tested were developed. A section of rotor was also cast and tested showing the excellent aerodynamic surface which results. A design analysis indicated that a cost reduction of almost ten to one can be achieved with a small weight increase to achieve the same structural integrity as expected of current rotor systems.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Lewis Res. Center Wind Turbine Structural Dyn.; p 257-260
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  • 96
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    Methods of attenuating wind turbine ac generator output variations (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Wind speed variation, tower blockage and structural and inertial factors produce unsteady torque in wind turbines. Methods for modifying the turbine torque so that steady torque is delivered to the coupled ac generator are discussed. The method that may evolve will be influenced by the power use that develops and the trade-offs of cost, weight and complexity.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Wind Turbine Structural Dyn.; p 179-186
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  • 97
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    Plans for wind energy system simulation (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A digital computer code and a special purpose hybrid computer, were introduced. The digital computer program, the Root Perturbation Method or RPM, is an implementation of the classic floquet procedure which circumvents numerical problems associated with the extraction of Floquet roots. The hybrid computer, the Wind Energy System Time domain simulator (WEST), yields real time loads and deformation information essential to design and system stability investigations.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Lewis Res. Center Wind Turbine Structural Dyn.; p 261-264
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  • 98
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    The UMass wind furnace blade design (1978)
    In:  Other Sources
    Details
    Publication Date: 2016-06-07
    Description: A brief description of the wind furnace concept is presented along with some preliminary performance data. Particular emphasis is placed on the design, construction, and manufacturing procedure for the 32.5 foot diameter GRP blades.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Lewis Res. Center Wind Turbine Structural Dyn.; p 265-268
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  • 99
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    Fixed pitch wind turbines (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Wind turbines designed for fixed pitch operation offer potential reductions in the cost of the machine by eliminating many costly components. It was shown that a rotor can be designed which produces the same energy annually as Mod-0 but which regulates its power automatically by progressively stalling the blades as wind speed increases. Effects of blade twist, taper, root cutout, and airfoil shape on performance are discussed as well as various starting technqiues.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Wind Turbine Structural Dyn.; p 243-254
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  • 100
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    Effects of rotor location, coning, and tilt on critical loads in large wind turbines (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Several large (1500 kW) horizontal rotor configurations were analyzed to determine the effects on dynamic loads of upwind downwind rotor locations, coned and radial blade positions, and tilted and horizontal rotor axis positions. Loads were calculated for a range of wind velocities at three locations in the structure: (1) the blade shank; (2) the hub shaft; and (3) the yaw drive. Blade axis coning and rotor axis tilt were found to have minor effects on loads. However, locating the rotor upwind of the tower significantly reduced loads at all locations analyzed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Wind Turbine Structural Dyn.; p 227-236
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