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244
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3,393 Matching Results
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Behavior of temperature and concentration of shallow groundwater in the Raft River Geothermal Area
A moderate-temperature (140/sup 0/C) geothermal power plant demonstration, sponsored by the Department of Energy, is currently under development in South Central Idaho. Environmental concerns about the quality of the local shallow groundwater prompted a modeling study. Simulation results (1) suggest significant thermal and quality levels within the 30-year projected plant operation and (2) makes obvious the importance of understanding the interconnected hydraulic systems.
Date:
May 1, 1980
Creator:
Tang, D.H.; Goldman, D.; Martinez, J.A. & Lantz, R.B.
Object Type:
Article
System:
The UNT Digital Library
Bell Canyon Test (BCT): cement development report
The Borehole Plugging (BHP) materials development program which has been underway at WES under Sandia sponsorship for about five years is reviewed. Development testing data for candidate grout mixtures for the BCT plug are presented. Field batching, mixing, and placement operations are discussed. Data from field samples molded during the two plug placements include strength, expansion, compressional wave velocity, dynamic modulus, density, and porosity. Microstructure and composition are compared for grout samples at ages of a few weeks and one year.
Date:
May 1, 1980
Creator:
Gulick, C. W.; Boa, J. A., Jr. & Buck, A. D.
Object Type:
Article
System:
The UNT Digital Library
Best Estimate Method vs Evaluation Method: a comparison of two techniques in evaluating seismic analysis and design
The concept of how two techniques, Best Estimate Method and Evaluation Method, may be applied to the traditional seismic analysis and design of a nuclear power plant is introduced. Only the four links of the seismic analysis and design methodology chain (SMC) - seismic input, soil-structure interaction, major structural response, and subsystem response - are considered. The objective is to evaluate the compounding of conservatisms in the seismic analysis and design of nuclear power plants, to provide guidance for judgments in the SMC, and to concentrate the evaluation on that part of the seismic analysis and design which is familiar to the engineering community. An example applies the effects of three-dimensional excitations on a model of a nuclear power plant structure. The example demonstrates how conservatisms accrue by coupling two links in the SMC and comparing those results to the effects of one link alone. The utility of employing the Best Estimate Method vs the Evaluation Method is also demonstrated.
Date:
May 1, 1980
Creator:
Bumpus, S. E.; Johnson, J. J. & Smith, P. D.
Object Type:
Report
System:
The UNT Digital Library
Biaxial Creep-Fatigue Behavior of Materials For Solar Thermal Systems
Biaxial creep-fatigue data for Incoloy 800 and Type 316H stainless steel at elevated temperatures are presented. Tubular specimens were subjected to constant internal pressure and strain-controlled axial cycling with and without hold times in tension as well as in compression.
Date:
May 1980
Creator:
Majumdar, S.
Object Type:
Report
System:
The UNT Digital Library
[Big Spring Quadrangle: Average Record Data Listings]
Average record data listings taken during aerial gamma-ray and magnetic surveys of the Big Spring quadrangle in Texas.
Date:
May 1980
Creator:
Geodata International, Inc.
Object Type:
Dataset
System:
The UNT Digital Library
[Big Spring Quadrangle: Single Record Data Listings]
Single record data listings taken during aerial gamma-ray and magnetic surveys of the Big Spring quadrangle in Texas.
Date:
May 1980
Creator:
Geodata International, Inc.
Object Type:
Dataset
System:
The UNT Digital Library
Binary Phase Diagrams of Transition Elements
Chart issued by the U.S. National Bureau of Standards illustrating the systematic relationships between phase diagrams of transition elements. This chart includes color illustrations.
Date:
May 1980
Creator:
Waterstrat, Richard M.
Object Type:
Poster
System:
The UNT Digital Library
Biological ramifications of the subseabed disposal of high-level nuclear waste
The primary goal of the US Subseabed Disposal Program (SDP) is to assess the technical and environmental feasibility of disposing of high-level nuclear waste in deep-sea sediments. The subseabed biology program is charged with assessing possible ecosystem effects of radionuclides as well as possible health effects to man from radionuclides which may be released in the deep sea and transported to the ocean surface. Current biological investigations are attempting to determine benthic community structure; benthic community metabolism; the biology of deep-sea mobile scavengers; the faunal composition of midwater nekton; rates of microbial processes; and the radiation sensitivity of deep-sea organisms. Existing models of the dispersal of radionuclides in the deep sea have not considered many of the possible biological mechanisms which may influence the movement of radionuclides. Therefore, a multi-compartment foodweb model is being developed which considers both biological and physical influences on radionuclide transport. This model will allow parametric studies to be made of the impact on the ocean environment and on man of potential releases of radionuclides.
Date:
May 1, 1980
Creator:
Gomez, L. S.; Hessler, R. R.; Jackson, D. W.; Marietta, M. G.; Smith, Jr., K. L.; Talbert, D. M. et al.
Object Type:
Report
System:
The UNT Digital Library
Cadmium sulfide-copper sulfide heterojunction cell research. Quarterly progress report, September 1, 1979-November 30, 1979
Development of the CdS/Cu/sub 2/S cell has focused on the planar junction design with an enhanced open circuit voltage. Various techniques have been tried in an attempt to improve the short circuit current. The maximum achieved is approx. 22 mA/cm/sup 2/ compared to approx. 25 mA/cm/sup 2/ for the traditional solution reaction cell. The highest efficiency achieved to data at open circuit voltages above 0.54 V is 8.26%. The conditions have been established for (CdZn)S deposition and composition to give open circuit voltages of 0.62 V. The influence of texturing on reflectivity has been established and some progress made in reducing the excessive intrusions previously noted in this material. The best efficiency achieved in actual sunlight testing was 8.04% at an open circuit voltage of 0.59 V. Further measurements on capacitance and photocapacitance are reported. Trial encapsulations using Electron Beam deposited glass and the results of attempts to deposit defect free coatings are described.
Date:
May 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Carbon dioxide for the recovery of crude oil: a literature search to June 30, 1979. Final report
Individual summaries and pertinent commentaries on each of the groups of references into which the literature on carbon dioxide for the recovery of crude oil has been classified are presented in this report. The major classifications are: physical models, laboratory studies, field tests, modelling, patents, and miscellaneous. A special summary that reviews and comments on field operations, fluid handling, and corrosion problems is also included. User's guide and subject categories for the CO/sub 2/ literature survey are given, followed by abstracts of the citations. It is concluded from this survey that the most significant deficiency in research on carbon dioxide flooding for the recovery of crude oil is the paucity of well controlled and interpreted field tests.
Date:
May 1, 1980
Creator:
Doscher, T.
Object Type:
Report
System:
The UNT Digital Library
Case studies of the legal and institutional obstacles and incentives to the development of small-scale hydroelectric power: Bull Run, Portland, Oregon
The National Conference of State Legislatures' Small-Scale Hydroelectric Policy Project is designed to assist selected state legislatures in looking at the benefits that a state can derive from the development of small-scale hydro, and in carrying out a review of state laws and regulations that affect the development of the state's small-scale hydro resources. The successful completion of the project should help establish state statutes and regulations that are consistent with the efficient development of small-scale hydro. As part of the project's work with state legislatures, seven case studies of small-scale hydro sites were conducted to provide a general analysis and overview of the significant problems and opportunities for the development of this energy resource. The case study approach was selected to expose the actual difficulties and advantages involved in developing a specific site. Such an examination of real development efforts will clearly reveal the important aspects about small-scale hydro development which could be improved by statutory or regulatory revision. Moreover, the case study format enables the formulation of generalized opportunities for promoting small-scale hydro based on specific development experiences. The case study for small-scale hydro power development at the City of Portland's water reserve in the Bull Run Forest …
Date:
May 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Case studies of the legal and institutional obstacles and incentives to the development of small-scale hydroelectric power: South Columbia Basin Irrigation District, Pasco, Washington
The case study concerns two modern human uses of the Columbia River - irrigation aimed at agricultural land reclamation and hydroelectric power. The Grand Coulee Dam has become synonomous with large-scale generation of hydroelectric power providing the Pacific Northwest with some of the least-expensive electricity in the United States. The Columbia Basin Project has created a half-million acres of farmland in Washington out of a spectacular and vast desert. The South Columbia River Basin Irrigation District is seeking to harness the energy present in the water which already runs through its canals, drains, and wasteways. The South District's development strategy is aimed toward reducing the costs its farmers pay for irrigation and raising the capital required to serve the remaining 550,000 acres originally planned as part of the Columbia Basin Project. The economic, institutional, and regulatory problems of harnessing the energy at site PEC 22.7, one of six sites proposed for development, are examined in this case study.
Date:
May 1, 1980
Creator:
Schwartz, L.
Object Type:
Report
System:
The UNT Digital Library
Catalytic biomass liquefaction. Quarterly report, January-March 1980
Progress during the quarter in the chemical characterization of the products of wood liquefaction is reported. The liquefaction of hydrolyzed slurries in a tubular reactor bomb system is described. The solvolytic depolymerization of wood is compared to the hydrolysis process. Results of a few illustrative runs are pesented. The characterization and flow properties of concentrated slurries are discussed. Progress on the construction of biomass continuous liquefaction unit is described.
Date:
May 1, 1980
Creator:
Ergun, S.; Djafar, R.; Figueroa, C.; Karatas, C.; Schaleger, L.; Seth, M. et al.
Object Type:
Report
System:
The UNT Digital Library
CENTRAL NUCLEAR COLLISIONS: THE PAST AND THE FUTURE
In the last few years the reaction mechanism of heavy-ion collisions at beam energies of 0.1- 2 GeV/nucleon has been extensively studied from both the theoretical and experimental points of view. In the first part of this paper, the current understanding of the reaction mechanism is reviewed. In the second part, a few pieces of data that suggest the existence of a collective mode created in central collisions are described. In the last part, future topics that we are trying to explore are discussed.
Date:
May 1, 1980
Creator:
Nagamiya, Shoji
Object Type:
Article
System:
The UNT Digital Library
Central receiver solar thermal power system, Phase 1: CDRL Item 2, pilot plant preliminary design report. Volume VII. Pilot plant cost and commercial plant cost and performance
Detailed cost and performance data for the proposed tower focus pilot plant and commercial plant are given. The baseline central receiver concept defined by the MDAC team consists of the following features: (A) an external receiver mounted on a tower, and located in a 360/sup 0/ array of sun-tracking heliostats which comprise the collector subsystem. (B) feedwater from the electrical power generation subsystem is pumped through a riser to the receiver, where the feedwater is converted to superheated steam in a single pass through the tubes of the receiver panels. (C) The steam from the receiver is routed through a downcomer to the ground and introduced to a turbine directly for expansion and generation of electricity, and/or to a thermal storage subsystem, where the steam is condensed in charging heat exchangers to heat a dual-medium oil and rock thermal storage unit (TSU). (D) Extended operation after daylight hours is facilitated by discharging the TSU to generate steam for feeding the admission port of the turbine. (E) Overall control of the system is provided by a master control unit, which handles the interactions between subsystems that take place during startup, shutdown, and transitions between operating modes. (WHK)
Date:
May 1, 1980
Creator:
Hallet, Jr., R. W. & Gervais, R. L.
Object Type:
Report
System:
The UNT Digital Library
Ceramic heat recuperators for industrial heat recovery
Results are presented from a continuing program whose purpose is to demonstrate the technical and economic feasibility of using ceramic heat recuperators for industrial heat recovery. The information presented can be used by engineers in industry to evaluate their specific furnace applications and to estimate the technical requirements and economic benefits from the use of ceramic heat recuperators. Chapter 2 presents methods that can be used to estimate the amount of energy savings by recuperation. Chapter 3 gives a brief background in heat exchanger design theory so that the reader can understand the procedures involved in designing and sizing heat exchangers for a given application. The specific GTE core design and the recuperator fabrication, housing and installation are discussed in Chapter 4. The demonstration project results are presented in Chapter 5. Each demonstration is described and the results, economics and problem areas discussed. The Appendices provide details that will allow the engineer in industry to select a core, size a heat exchanger, calculate the performance, determine energy saved and estimate the economics of using a ceramic recuperator for a specific industrial application. (LCL)
Date:
May 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Cesium diffusion in graphite
Experiments on diffusion of /sup 137/Cs in five types of graphite were performed. The document provides a completion of the report that was started and includes a presentation of all of the diffusion data, previously unpublished. Except for data on mass transfer of /sup 137/Cs in the Hawker-Siddeley graphite, analyses of experimental results were initiated but not completed. The mass transfer process of cesium in HS-1-1 graphite at 600 to 1000/sup 0/C in a helium atmosphere is essentially pure diffusion wherein values of (E/epsilon) and ..delta..E of the equation D/epsilon = (D/epsilon)/sub 0/ exp (-..delta..E/RT) are about 4 x 10/sup -2/ cm/sup 2//s and 30 kcal/mole, respectively.
Date:
May 1, 1980
Creator:
Evans, R. B., III; Davis, W., Jr. & Sutton, A. L., Jr.
Object Type:
Report
System:
The UNT Digital Library
Challis 1° x 2° NTMS Areas, Idaho
Log histogram for Challis 1° x 2° NTMS Areas, Idaho
Date:
May 1980
Creator:
Thayer, Paul A. & Cook, J. R.
Object Type:
Dataset
System:
The UNT Digital Library
Challis 1° x 2° NTMS Areas, Idaho: Data Report
Graphs for Challis 1° x 2° NTMS Areas, Idaho: Data Report
Date:
May 1980
Creator:
Thayer, Paul A. & Cook, J. R.
Object Type:
Dataset
System:
The UNT Digital Library
Challis 1° x 2° NTMS Areas, Idaho: Data Report
Graphs for Challis 1° x 2° NTMS Areas, Idaho: Data Report
Date:
May 1980
Creator:
Thayer, Paul A. & Cook, J. R.
Object Type:
Dataset
System:
The UNT Digital Library
Challis 1° x 2° NTMS Areas, Idaho: Data Report
The following data report presents results of ground water and stream sediment reconnaissance in the Challis quadrangle, Idaho, where 1428 sediment samples were collected.
Date:
May 1980
Creator:
Thayer, Paul A. & Cook, J. R.
Object Type:
Report
System:
The UNT Digital Library
Challis 1° x 2° NTMS Areas, Idaho: Data Report
Graphs for Challis 1° x 2° NTMS Areas, Idaho: Data Report
Date:
May 1980
Creator:
Thayer, Paul A. & Cook, J. R.
Object Type:
Dataset
System:
The UNT Digital Library
Challis 1° x 2° NTMS Areas, Idaho: Data Report
Graphs for Challis 1° x 2° NTMS Areas, Idaho: Data Report
Date:
May 1980
Creator:
Thayer, Paul A. & Cook, J. R.
Object Type:
Dataset
System:
The UNT Digital Library
Challis 1° x 2° NTMS Areas, Idaho: Data Report
Graphs made for Challis 1° x 2° NTMS Areas, Idaho: Data Report
Date:
May 1980
Creator:
Thayer, Paul A. & Cook, J. R.
Object Type:
Dataset
System:
The UNT Digital Library