1,208 Matching Results

Search Results

Results: 1 - 24 next
open access

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
open access

Ranking energy-conservation measures to establish research priorities: synopsis of a workshop

Description: A workshop was convened to assist DOE's Technology Assessment Division in evaluating the need to prepare additional environmental- and social-impact assessments of different energy-conservation measures. Attendees participated in a decision-making exercise designed to rank 19 different energy-conservation measures according to their overall potential for achieving important national goals and their ease of implementation. The participants felt that the most-important ranking criteria dealt with… more
Date: May 2, 1979
Creator: Moskowitz, P.D.; Le, T.Q. & Pierce, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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
open access

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
open access

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
open access

Solar production of industrial process steam for the Lone Star Brewery. 80% review report

Description: The solar steam system for the Lone Star Brewery is described in detail. It consists of a roof-mounted parabolic trough collector field heating Monsanto's Therminol T-55 heat transfer fluid, a solar-fired boiler, a heat transfer fluid circulation pump, and all the associated piping. The comparison of various collectors and heat transfer fluids surveyed is reviewed. Also included are discussions of the system performance analysis, economic analysis, safety analysis, data collection, and environm… more
Date: May 15, 1979
Creator: Deffenbaugh, D. M.; Watkins, P. V.; Hugg, S. B.; Kulesz, J. J.; Decker, H. E. & Powell, R. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radian DART microcomputer system hardware documentation operation system description. DART II documentation

Description: This operator's manual for the DART II Data Acquisition, Reduction, and Transmission system is divided into the following sections: system capabilities and configuration; ways in which the microprocessor-based central processing unit communicates with the memory and peripheral devices; theory of operation for the system components; and a section of reference data including schematic diagrams, cable lists, device specification sheets and other detailed information. (GHT)
Date: May 23, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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
open access

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
open access

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
open access

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
open access

Near Term Hybrid Passenger Vehicle Development Program. Phase I, Final report. Appendix A: mission analysis and performance specification studies. Volume II. Appendices

Description: These appendices to the mission analysis report for the Near Term Hybrid Vehicle program contain data on passenger vehicle usage by purpose, trip length, travel speed, vehicle age, vehicle ownership and fuel economy, and US demographics. (LCL)
Date: May 18, 1979
Creator: Traversi, M. & Barbarek, L.A.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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
open access

X-ray zone plates fabricated using electron-beam and x-ray lithography

Description: Fresnel zone plate patterns, free of spherical abberation, with diameters of up to 0.63 mm and linewidths as small as 1000 A were fabricated on polyimide-membrane x-ray masks using scanning electron beam lithography Distortion of the electron beam scan raster was reduced to < 2500 A over a 2 mm x 2 mm field by applying deflection corrections, while viewing the distortion using a moire method. C/sub k/ x-ray lithography was used to replicate the zone plate pattern in thick PMMA over a 100 A thic… more
Date: May 1979
Creator: Shaver, D. C.; Flanders, D. C.; Ceglio, N. M. & Smith, H. I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

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
open access

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
captions transcript

[News Clip: Retirement]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 31, 1979, 6:00 p.m.
Duration: 58 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

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
open access

Decontamination methods

Description: This paper discusses decontamination methods for LWRs. Emphasis is on the chemical cleaning of primary systems and contaminated equipment and components. The equipment is composed primarily of stainless steel, Inconel, Zircaloy, and a few other materials. Variables affecting efficiency are discussed. 10 figures. (DLC)
Date: May 23, 1979
Creator: Perrigo, L. D. & Divine, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

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
open access

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
open access

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
open access

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
Back to Top of Screen