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1,068 Matching Results
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Design study of a two-phase turbine bottoming cycle. Final report. [Therminol 66 heated in diesel exhaust]
The use of a biphase turbine system to recover waste heat from diesel engines was examined and found to have many favorable attributes. Among these were low rpm, high torque, low heat exchanger cost, and simplicity. Several candidate working fluid combinations were tested at temperatures of interest. The contact heat exchanger concept was substantiated by large scale experiment. The program includes subscale tests of key hardware components of a biphase turbine bottoming system. These are the two-phase nozzle, two-phase turbine, and direct contact heat exchanger. A comprehensive cost analysis was completed. A three-year program leading to a full-size system field demonstration has been planned. Progress in the first year of this program and the effort started on the second year program are reported.
Date:
June 15, 1979
Creator:
Studhalter, W R
Object Type:
Report
System:
The UNT Digital Library
Feasibility study of networks. Final report. [Feasibility of resource sharing via general-purpose computer networks]
From July, 1974, to December, 1979, the Laboratory for Nuclear Service (LNS) conducted a study of the feasibility of resource sharing via general - purpose computer networks. Originally, the study focused on methods of implementing an ARPAnet connection for LNS in collaboration with the MIT Information Processing Center (IPC). When it appeared that the most feasible solution for LNS was to access the ARPANET via the MIT Multics system, the investigation expanded to a consideration of the implementation of computer resource sharing via networks. Experiments were performed at various ERDA installations on the ARPANET in using the networks for offloading large calcuations and obtaining access to unique hardware and software. Performance statistics were collected and cost comparisons, made. Both the benefits and barriers of networking were analyzed. The value of electronic mail, teleconferencing, and other forms of computer-aided communication was also investigated. The study demonstrated that resource sharing via networks can provide small computer installations access to computer facilities not available on site. However, it is not adequate substitute for an on-site computer. There must be enough computing power locally to service the average load. Certain types of computations are not effectively done on the network. Use of the network …
Date:
December 15, 1979
Creator:
Campbell, E. J. & Kannel, M. S.
Object Type:
Report
System:
The UNT Digital Library
Liquid fuels production from biomass. Progress report No. 8, July 1-September 30, 1979
It was found that marine algae could be converted to higher aliphatic organic acids and that these acids could be readily removed from the fermentation broth by membrane or liquid-liquid extraction. It was then proposed to convert these higher organic acids to aliphatic hydrocarbons via Kolbe electrolysis, which may be used as a diesel fuel. A coenzyme M analogue, 2-bromoethanesulfonic acid has been shown to be an effective suppressor of methane in nonsterile anaerobic fermentation of cellulosic substrates. A tapered auger device has been designed and built which has been demonstrated on the bench to be effective for adding substrate and removing residue in a continuous manner from a fixed packed bed fermenter. A solvent extracter system using kerosene as the nonaqueous phase has been constructed and is currently in operation in series with the 300 liter fixed packed bed fermenter. The electrolytic oxidation of organic acids produced in the 300 liter fixed packed bed fermenter is operating with a favorable energy balance of 6/1 based on the applied potential. As stated earlier the liquid-liquid extractor system is operating in line with the 300 liter fixed packed bed fermentor. The other components of an integrated continuous system, the continuous feed …
Date:
October 15, 1979
Creator:
Sanderson, J.E.; Wise, D.L.; Levy, P.F. & Molyneaux, M.S.
Object Type:
Report
System:
The UNT Digital Library
Large scale copper vapor laser computer control system
High power pulse copper vapor laser systems consist of a master oscillator and numerous power amplifiers. Large systems used in laser isotope separation experiments require several automatic control systems. The rapid development of compact mini computers over the past several years has enabled the implementation of sophisticated computer controlled copper vapor laser systems. Present systems provide automatic time synchronization and input power stabilization. Future systems will incorporate semi-automatic start-up capabilities.
Date:
May 15, 1979
Creator:
LaChapell, M. J.; Spencer, L. W. & Coutts, G. W.
Object Type:
Article
System:
The UNT Digital Library
Relative Potential Hazards of Radioactive Waste in Various Water Systems
The potential hazard to man arising from the hypothetical release of radioactive spent fuel waste into various water systems has been evaluated. Radionuclide transport and human exposure were simulated for six water systems: a large Northwestern river, a small Northeastern river, a small Northwestern river, a large Central Region river, a lake with no outflow in an arid region, and an aquifer discharging directly into an ocean.
Date:
June 15, 1979
Creator:
Duffy, John J. & Mealy, Gregory L.
Object Type:
Report
System:
The UNT Digital Library
TAAMM submunition project. Monthly progress report No. 8, July 1-31, 1979
Progress during July 1979 in the development of the TAAMM warhead is reported. The one gun test was unsuccessful due to the velocity augmentor misfiring. Analytical studies were performed to determine velocity augmentor optimization. Hardware for the optimum augmentor is being fabricated. The results of a series of shaped charge tests are reported. Some delay detonators have been obtained and will be tested. (LCL)
Date:
August 15, 1979
Creator:
Walker, F.E.
Object Type:
Report
System:
The UNT Digital Library
Regional Issue Identification and Assessment program (RIIA). Environmental impacts and issues of the EIA MID-MID scenario: Federal Region I (New England)
The impacts described here for 1985 and 1990 are based on a national energy projection 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 the official DOE national energy projections when this project was initiated, prior to the passage of the National Energy Act. Since the RIIA program is part of an ongoing review of the regional impact of energy policies, the next phase will examine the National Energy Act (NEA) and initiatives suggested by the President's second National Energy Plan. However, since coal utilization increases under the NEA, in general, impacts identified in the TRENDLONG Series C Scenario should provide a framework for the discussion of impacts by NEA. The environmental impacts discussed in this volume are for Federal Region I (Maine, Vermont, New Hampshire, Massachusetts, Rhode Island, and Connecticut). However, there are nine companion volumes, one for each of the other Federal Regions.
Date:
April 15, 1979
Creator:
Brainard, J. & Munson, J.S.
Object Type:
Report
System:
The UNT Digital Library
Interim implementation structure for development of performance criteria and test standards for photovoltaic systems
This document presents an implementation structure for the near-term development of performance criteria and test methods for photovoltaic (PV) materials, components, subsystems, and systems. The approach is designed to be responsive to the Photovoltaic Research, Development and Demonstration Act of 1978 (PL-95-590). The project is organized into four tasks: (1) establishment of performance criteria and the development of test methods; (2) development of laboratory accreditation/product certification guidelines; (3) development of validation methodologies; and (4) coordination of the quality assurance effort with consensus standards and code organizations. A schedule and milestones are presented for each task. The appendices provide a brief overview of standards and the standards development process. The philosophy behind this project is to develop industry- and user-established performance criteria, test methods, and accreditation procedures which may then be referred to independent consensus standards organizations for the preparation of consensus standards. The emphasis in execution of this approach will be to develop uniform, fair performance criteria and tests and to avoid rigid, prescriptive criteria. Photovoltaics is an emerging technology; criteria written now must be able to accommodate devices and techniques not yet developed.
Date:
November 15, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
District heating and cooling systems for communities through power plant retrofit and distribution network. Final report. Volume II. Appendices
This appendix presents tabulated data used for evaluating the feasibility of retrofitting thermal power plants in the Detroit area so as to provide heat for a district heating system. (LCL)
Date:
September 15, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Silicon preparation and purity from the reaction of sodium with silicon tetrafluoride and silicon tetrachloride: a thermochemical study
Thermochemical equilibrium computations for the preparation of silicon (Si) by the reaction between sodium (Na), either liquid or vapor, with silicon tetrafluoride (SiF/sub 4/) and silicon tetrachloride (SiCl/sub 4/) are presented. Computations indicate that SiF/sub 4/ reacts with either liquid or gaseous Na to produce temperatures sufficiently high to form molten Si. Liquid Na reacts with SiF/sub 4/ to produce substantially higher Si yields than does the free combustion reaction with Na vapor; however, the Na vapor/SiF/sub 4/ reaction, if temperature-constrained at the Si melting point, produces an expected Si yield close to 100%. A stoichiometric mixture of liquid Na and SiCl/sub 4/ vapor reacts to produce liquid Si, gaseous sodium chloride (NaCl), and a small concentration of Si subhalides. Gaseous Na, however, reacts with SiCl/sub 4/ to form entirely gaseous reaction products and a high yield of Si (liquid) but subhalide concentrations are greater than when liquid Na is used. The reactions of a number of impurity elements in Na, during the course of the Na-Si halide reaction, have been described. Of those considered, only calcium (Ca), magnesium (Mg), phosphorus (P), and strontium (Sr) are expected to co-exist to any extent in Na vapor and none is expected to …
Date:
April 15, 1979
Creator:
Rhein, R. A.
Object Type:
Report
System:
The UNT Digital Library
Purification of silicon by the silicon fluoride transport process. Thermochemical study
A computer-assisted thermochemical equilibrium analysis was conducted for the silicon transport reaction: Si(s) + SiF/sub 4/(g) = (intermediates) = Si(s) + SiF/sub 4/(g). The calculations indicated that a substantial transport rate should be possible at temperatures of 1700/sup 0/K and one atmosphere pressure. Computations were made to determine whether the elemental impurities present in metallurgical-grade silicon would transfer in this process. It was concluded that aluminum, chromium, copper, iron, manganese, molybdenum, nickel, vanadium, and zirconium would not transfer, but that boron, magnesium, phosphorus, and titanium would transfer.
Date:
April 15, 1979
Creator:
Rhein, R. A.
Object Type:
Report
System:
The UNT Digital Library
Passive solar calculation methods. Interim report
This report is the first in a series and details the results accomplished under the following tasks: (1) evaluation of existing passive solar calculation methods, (2) BLAST/DOE-1 program interface and comparison with BR-202, and (3) development of analytic relationships between the thermal balance and weighting factor techniques. The various methods available for use in thermal load analysis are presented with detailed informaton on algorithms used in the thermal balance and weighting factor techniques. (MOW)
Date:
April 15, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Preliminary designs for OTEC Stationkeeping Subsystems (SKSS). Summary report
This summary report presents a condensation of the designs as developed from requirements and concept selection to preliminary design. The study consists of the following six tasks: (1) Design requirements: establish design environmental conditions and criteria. Develop methodology to both assess SKSS reliability and performance, and minimize life cycle costs. (2) Conceptual design: develop at least two SKSS conceptual designs for both barge and spar platform (eight in all). Consider commercial plant SKSS, verify feasibility, define problem areas, estimate life cycle cost. Develop deployment, operation and maintenance scenarios. Recommend an SKSS concept for each platform. (3) Preliminary design; prepare preliminary designs for two SKSS concepts selected by NOAA/DOE. Optimize the designs, provide deployment and retrieval procedures, support requirements, evaute reliability and performance. Assess effects of watch circle and water depth variation. (4) Development and testing recommendations: recommend programs required to confirm design assumptions and performance predictions, including material and component development, and soils investigation. Estimate cost and schedule required to perform these programs. (5) Cost-time analysis: develop a detailed cost and schedule for the acquisition, transportation, deployment, inspection, maintenance, spares, replacement and salvage for the SKSS designs. (6) Commercial plant SKSS recommendations: assess applicability of designs to commercial plant SKSS. …
Date:
February 15, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Passive solar calculation methods. Final report
An analytical treatment related to the generation of space specific weighting factors is presented using a recursion relationship which employs a heat balance of both the outside and inside surface. After which the multizone problem is discussed, the analysis of which is facilitated through the use of the calculated weighting factors. The use of frequency domain methods is detailed such that the amplitude ratio and phase shift characteristics for a sinusoidal excitation are derived for the thermal load resulting from radiation heat gain/loss and space air temperature fluctuations. The results of a parametric study related to variable floor properties, radiation distributions and space sizes are presented. The weighting factors generated for each perturbation were used to define the expected differences in space response characteristics. Additional studies made using methods available for use in calculating thermal loads without the program peculiar aspects inherent in the first comparison. The Appendix, in addition to containing the tabulated results of the parametric study, also includes a specific discussion for each of the tasks outlined within the statement of work.
Date:
June 15, 1979
Creator:
Cumali, Z. O.; Sezgen, A. O. & Sullivan, R.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0255.0610]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mary Helm....not defeated yet."
Date:
January 15, 1979
Creator:
Reed, Monty
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0334.0471]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "More than 40 professional athletes and entertainers, including Bob Hope and Jonathan Winters, will participate in the Bud Wilkinson-Barry Switzer Swing for Sight Golf Tournament Monday."
Date:
May 15, 1979
Creator:
Vahlberg, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0256.0125]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
October 15, 1979
Creator:
Beuhner, Jeff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0307B.0151]
Photograph used for a story in the Oklahoma Times newspaper.
Date:
October 15, 1979
Creator:
Beuhner, Jeff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0350.0078]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Lake Ponca recedes from docks after failing to share state's summer rains."
Date:
August 15, 1979
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0260.0138]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Construction work continues on the Roger Lane interchange in Lawton."
Date:
May 15, 1979
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0258.0417]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Dr. Lee Hicks, Central State University theatre director, has been awarded the Gold Medallion Award of Excellence by the American College Theatre Festival, Southwest Region, held recently in Fort Worth."
Date:
March 15, 1979
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Utterbackia imbecillis, Specimen #1286
One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; tan external coloring; no external sculpturing. Collected in the Colorado basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.
Date:
June 15, 1979
Creator:
Britton, Joseph; Brush, Sam & La Grove, M.
Object Type:
Specimen
System:
The UNT Digital Library
[Photograph 2012.201.B0553.0745]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Bringing fresh ice water to hospital is just one duty performed by Candy Stripers like Zarah Hoen....."
Date:
June 15, 1979
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0246.0577]
Photograph used for a story in the Oklahoma Times newspaper.
Date:
February 15, 1979
Creator:
Tullous, Don
Object Type:
Photograph
System:
The Gateway to Oklahoma History