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Development and evaluation of die and container materials. Final report

Description: Specific compositions of high purity silicon aluminum oxynitride (Sialon) and silicon beryllium oxynitride (Sibeon) solid solutions are shown to be promising refractory materials for handling and manipulating solar grade silicon into silicon ribbon. Well controlled processing schedules were developed for fabricating high purity Sialon and Sibeon materials. Essentially the impurity content of the hot pressed ceramics was due only to impurities from the original starting powders. A ceramic shapin… more
Date: May 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical Vapor Deposition of Refractory Metal Reflectors for Spectrally Selective Solar Absorbers. Annual Report, May 1, 1978-April 30, 1979

Description: Three methods are described to fabricate by chemical vapor deposition (CVD) molybdenum films which rival conventional mirror materials in their infrared reflectance. With an absolute reflectance of 97.4% at 10 ..mu..m, these Super Molybdenum films reflect better than any other molybdenum film previously reported. When deposited in the presence of oxygen, films of a reduced reflectance over the solar emission range result. If passivated and antireflected by a Si/sub 3/N/sub 4/ layer, such Black … more
Date: May 1, 1979
Creator: Seraphin, B. O. & Carver, G. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental test of resonant absorption theory. Final report, January 1, 1978-December 31, 1979

Description: This experimental research has probed the nature of resonant absorption (RA) of laser light by laser-produced plasmas. The plasmas were created by optical breakdown of a shockfront produced in an electrothermal shock tube. This procedure allows the density structure of the plasma, and in particular, the orientation of the plasma critical-density surface, to be reproducibly formed from one shot to the next. Thus, for the first time, RA has been controllably and reproducibly studied in isolation … more
Date: May 1, 1979
Creator: Yablonovitch, E
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Study of hydrogen-powered versus battery-powered automobiles

Description: A study conducted to compare the technological status and the resultant potential vehicle characteristics for hydrogen- and battery-powered automobiles that could be produced from 1985 to 2000 is documented in 3 volumes. The primary objectives of the study were: the assessments of applicable energy storage and propulsion technology for the two basic vehicle types (applied to four-passenger cars); a rigorous comparison of vehicle weight, size, and usefulness versus design range; and an investiga… more
Date: May 1, 1979
Creator: Donnelly, J.J. Jr.; Greayer, W.C.; Nichols, R.J. & Escher, W.J.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geology of the Cove Fort-Sulphurdale KGRA

Description: The Cove Fort-Sulphurdale Known Geothermal Resource Area (KGRA) is located on the northwestern margin of the Marysvale volcanic field in southwestern Utah. The geology of the KGRA is dominated by lava flows and ash-flow tuffs of late Oligocene to mid-Miocene age that were deposited on faulted sedimentary rocks of Paleozoic to Mesozoic age. The geothermal system of the Cove Fort-Sulphurdale KGRA is structurally controlled by normal faults. High-angle faults control fluid flow within the geotherm… more
Date: May 1, 1979
Creator: Moore, J. N. & Samberg, S. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SOLSTEP: a computer model for predicting the thermodynamic and economic performance of solar thermal power plants

Description: A thermodynamic and economic performance analysis code, SOLSTEP, was developed to facilitate the evaluation of solar thermal power plant designs. The code conducts a time step simulation of the plant thermodynamic performance using actual recorded meteorological and insolation data. Each analysis case provides capacity factor and levelized energy cost results for several plant configurations using various combinations of collector field size and storage capacity. The code has been used to analy… more
Date: May 1, 1979
Creator: Bird, S. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Determination of in-situ thermal properties of Stripa granite from temperature measurements in the full-scale heater experiments: method and preliminary results. Technical information report No. 24

Description: The in-situ thermal conductivity and thermal diffusivity of a granite rock mass at the Stripa mine, Sweden, have been extracted from the first 70 days of temperature data for the 5 kW full-scale heater experiment by means of least-squares fit to a finite-line source solution. Thermal conductivity and thermal diffusivity have been determined to be 3.69 W/(m-/sup 0/C) and 1.84 x 10/sup -6/ m/sup 2//s, respectively, at an average rock temperature of 23/sup 0/C (the average value of the actual temp… more
Date: May 1, 1979
Creator: Jeffry, J.A.; Chan, T.; Cook, N.G.W. & Witherspoon, P.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Powerplant productivity improvement study: policy analysis and incentive assessment. Final report

Description: Policy options that the Illinois Commerce Commission might adopt in order to promote improved power plant productivity for existing units in Illinois are identified and analyzed. These policy options would generally involve either removing existing disincentives and/or adding direct incentives through the regulatory process. The following activities are reported: in-depth review of existing theoretical and empirical literature in the areas of power plant reliability, regulatory utility efficien… more
Date: May 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Rock bed storage with heat pump. Final report

Description: The study, Rock Bed Storage with Heat Pump, established the feasibility of mating a heat pump to a rock bed storage to effect optimal performance at the lowest cost in single family residences. The operating characteristics of off-the-shelf components of heat pump/rock bed storage systems were studied, and the results were used to formulate configurations of representative systems. These systems were modeled and subsequently analyzed using the TRNSYS computer program and a life cycle cost analy… more
Date: May 1, 1979
Creator: Remmers, H.E. & Mills, G.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Study of partial penetration in a two-layered aquifer. I. Analytical solution

Description: An analytic solution is presented to the problem of transient flow to a partially penetrating well that is open in either layer of finite thickness in a two-layered system. Crossflow is permitted at the interface between the two layers. Closed form solutions have been obtained which can easily be evaluated numerically. Simplified forms of the solutions for small and large values of time have been developed from the main solution. It has also been shown that the solution reduces to the case of s… more
Date: May 1, 1979
Creator: Javandel, I. & Witherspoon, P.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Data handbook for the National Solar Energy Demonstration Program. Preliminary issue

Description: This preliminary document provides information in a matrix format which lists technical and programmatic data concerning the various project sites selected for the National Solar Energy Demonstration Program. It incorporates into one handbook the commercial, residential and other demonstration projects which are now a part of the national program. It can be used as a reference source for technical and research purposes on a state-by-state basis.
Date: May 1, 1979
Creator: Christensen, D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Survey mirrors and lenses and their required surface accuracy. Semiannual technical progress report, September 15, 1978-April 15, 1979

Description: Since the beginning of widespread research and development for solar energy, a major concern has been the effect of optical and surface quality of collector materials on collector performance and the changes in these properties due to environmental conditions. In many instances, this type of data has not been compiled. When data is available on surface quality, mirror or lens optical characteristics, surface deformations due to stress and other errors, it is difficult to quantify the effect the… more
Date: May 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Detailed conceptual design of a high temperature glass pH electrode for geothermal applications. Final report, Task I

Description: A modification of the planar electrode technology yielded prototype glass pH electrodes that can withstand the minimum test conditions of 250/sup 0/C and 5000 psi in an aqueous synthetic geothermal brine. Electrodes of this design can be made in volume at reasonable cost. In addition, an electrode holder has been designed and prototypes fabricated to permit laboratory testing in simulated geothermal brines of downhole conditions.
Date: May 1, 1979
Creator: Gray, D.N. & Breno, P.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of latent heat on frost penetration in moist soil

Description: Substantial differences have been found between measured and computed heat losses from a large in-ground thermal storage tank used for annual cycle heat storage. One suspected source of error in the computation was the neglect of the latent heat effects in the moist soil and efforts have been made to examine these. One of these effects, that was due to freezing and thawing of the soil moisture is discussed, and the results of some simulations of the effect in a numerical model are presented.
Date: May 1, 1979
Creator: Hopper, F. C. & McClenahan, J. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Near source tracers at Hanford. [Krypton-85]

Description: Atmospheric tracer techniques are reviewed, with emphasis on the Hanford inert gas krypton-85 field technique. This technique is considerably more sophisticated than the visible and particulate tracer techniques. The krypton technique develops histories of concentration at up to 128 field locations; the particulate techniques generate only bulk time integrated samples. The krypton dispersal technique permits release of either a plume or a true puff; the particulate techniques permit continuous … more
Date: May 1, 1979
Creator: Nickola, P. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Status of Pilgrim springs

Description: Information on the resource includes the following: historical background, geological reconnaissance, resistivity, seismic refraction, magnetic profiling, microseismic background, temperature measurement, and chemical analysis. A planned geothermal exploration and an agricultural demonstration program are described. (MHR)
Date: May 1, 1979
Creator: Kirkwood, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Spermatogonial stem cell renewal following irradiation

Description: The spermatogonial cell renewal system can maintain function and a steady level of cell population for relatively long periods of continuous low-level irradiation indicating that there does not appear to be a serious accumulation, over many generations, of damage affecting proliferation. Provided the dose-rate is quite low, there is an effective selective removal of damaged cells with almost complete repair of cellular nonlethal damage. At dose-rates greater than 2 rad/day, spermatogonia are ve… more
Date: May 1, 1979
Creator: Fabrikant, Jacob I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Data handbook for the National Solar Energy Demonstration Program

Description: This preliminary document provides information in a matrix format which lists technical and programmatic data concerning the various project sites selected for the National Solar Energy Demonstration Program. It incorporates into one handbook the commercial, residential, and other demonstration projects which are now a part of the national program. It can be used as a reference source for technical and research purposes on a state-by-state basis.
Date: May 1, 1979
Creator: Christensen, D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of polycrystal GaAs solar cells. Quarterly technical progress report No. 1, January 15-April 30, 1979

Description: The objective of this program is to develop a thin film GaAs solar cell technology with the potential of yielding cells with 12 to 15% efficiency and to develop thin film growth techniques which are compatible with the low cost production goal of $500/kW-peak. Progress is reported on a study of junction formation in large grain polycrystal GaAs; characterization of the electronic properties of polycrystal GaAs grown by MBE on low cost foreign substrates; optimizing the structure of AlGaAs-GaAs … more
Date: May 1, 1979
Creator: Miller, D. L.; Cohen, M. J.; Harris, Jr., J. S.; Ballantyne, J.; Hoyte, A. & Stefanakos, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Regional Issue Identification and Assessment program (RIIA). Environmental impacts and issues of the EIA MID-MID scenario: Federal Region III (mid-Atlantic)

Description: The EIA MID-MID scenario generally reinforces existing environmental concerns in the mid-Atlantic region. This results in part from the emphasis on existing rather than new energy technologies. The widespread public opposition to nuclear power in the region is likely to impede realization of the nuclear goals of the scenario. About 50% improvement in sulfur oxides air quality is projected for the region (all states), based on emissions reductions both within the region and in neighboring region… more
Date: May 1, 1979
Creator: Brainard, J. & Lipfert, F.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of Open-Cycle, Coal-Fired MHD Generators. Ninth-Tenth Quarterly Technical Progress Report, July 1, 1978-April 30, 1979

Description: The successful design of full-scale open-cycle, coal-fired MHD generators for baseload electrical production requires a detailed understanding of the plasma chemical and plasma dynamic characteristics of anticipated combustor and channel fluids. This report documents progress in efforts to model negative ion formation and slag condensation effects on core flow conductivity, to improve the ability to sample and characterize laboratory produced coal combustion plasmas, and to measure mechanisms a… more
Date: May 1, 1979
Creator: Kolb, C. E.; Wormhoudt, J.; Yousefian, V.; Cheng, W.; Bien, F.; Martinez-Sanchez, M. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Regional Issue Identification and Assessment program (RIIA). Environmental impacts and issues of the EIA MID-MID scenario: Federal Region II (New York and New Jersey)

Description: The impacts described for 1985 and 1990 are based on a national energy projection (scenario) which assumes medium energy demand and fuel supply through 1990 but does not incorporate the policies of the National Energy Act (NEA). This scenario, referred to as the Projection Series C or the TRENDLONG MID-MID scenario, is one of six possible energy futures developed by the DOE Energy Information Administration for the Department's 1977 Annual Report to Congress. It was chosen as representative of … more
Date: May 1, 1979
Creator: Brainard, J. & Munson, J.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cross classification of census data for use in estimating residential heating demands

Description: This report documents the procedures and assumptions used to cross classify 1970 census data for use in estimating residential heating demands on a small areal basis. The major results for all census tracts and minor civil divisions in the US comprise (1) counts of occupied dwelling units by building size, by type of space heat equipment, and by space heat fuel type; (2) counts of occupied dwelling units by building size and by water heat fuel type; and (3) the percentage distribution of occupi… more
Date: May 1, 1979
Creator: Tessmer, R.G. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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