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503 Matching Results
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Future engineering needs of mirror fusion reactors
Fusion research has matured during the last decade and significant insight into the future program needs has emerged. While some will properly note that the crystal ball is cloudy, it is equally important to note that the shape and outline of our course is discernable. In this short summary paper, I will draw upon the National Mirror Program Plan for mirror projects and on available design studies of these projects to put the specific needs of the mirror program in perspective.
Date:
July 30, 1982
Creator:
Thomassen, K.I.
Object Type:
Article
System:
The UNT Digital Library
Ocean thermal energy. Quarterly report, April-June 1982
This quarterly report includes summaries of the following tasks: (1) OTEC pilot plant conceptual design review; (2) OTEC methanol; (3) management decision requirements for OTEC construction; (4) hybrid geothermal - OTEC (GEOTEC) power plant performance estimates; and (5) supervision of testing of pneumatic wave energy conversion system.
Date:
June 30, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
D7H-test results
Data were reduced from the voltage-time relations stored in files D7H001 to D7H090 on HP1000. The I-B calibration curve is included. The data base is shown and can be used by the 9845B. The data include the quench location, Q/sub 2/ layer 1 top, Q/sub 3/ layer 1 bottom and the quench current and its normalized value with respect to short sample, I/sub c/ = 4920A at 4.4 K, I/sub c/ = 6710 A at 1.8 K. The resistance (..cap omega../cm) was calculated using the propagation time according to the voltage change across the measured sections. The conductor potential length are L/sub 5/ /sub 9/ = 48.6 cm, L/sub 6/ /sub 10/ = 17.9 cm, L/sub 7/ /sub 11/ = 40.6 cm. The turn to turn velocity V/sub t/ was calculated dividing the nominal turn to turn distance (58 mil) by the propagation time (Trans. Time). The quench time T/sub q/ was measured from the time the resistive rise starts until the energy extraction system fires.
Date:
July 30, 1982
Creator:
Caspi, S.
Object Type:
Report
System:
The UNT Digital Library
Double-mode pulsation
Double mode pulsation is a very pervasive phenomenon in stars all over the Hertzsprung-Russell diagram. In order of increasing radius, examples are: ZZ Ceti stars, the sun, the delta Scuti stars, RR Lyrae variables, the ..beta.. Cephei variables and those related to them, Cepheids, and maybe even the Mira stars. These many modes have been interpreted as both radial and nonradial modes, but in many cases the actual mode has not been clearly identified. Yellow giants seem to be the most simple pulsators with a large majority of the RR Lyrae variables and Cepheids showing only one pulsation period. We limit this review to those very few cases for classical Cepheids and RR Lyrae variables which display two modes. For these we know many facts about these stars, but the actual cause of the pulsation in two modes simultaneously remains unknown.
Date:
July 30, 1982
Creator:
Cox, A. N.
Object Type:
Article
System:
The UNT Digital Library
Coal-oil mixture combustion program: injection into a blast furnace
A chemically stabilized coal-oil mixture (COM) was made and used as an auxiliary fuel in a blast furnace for 44 days. Approximately 485,000 gallons of COM were produced at an on-site COM plant. Composition was 47.9% coal, 47.6% No. 6 oil, 4.0% water, and 0.5% emulsifier. Average injection rates were 3.8 to 13.0 gpm during different periods of the trial. Coal handling equipment, mixing and processing equipment, pumps, piping, fuel lances, and instrumentation are discussed. The blast furnace performance during the trial is compared to a Base Period of injecting No. 6 oil. Blast furnace performance was satisfactory, with one pound of COM replacing one pound of coke or 0.8 pound of No. 6 oil. The production of COM and its usage in a blast furnace is economical and feasible.
Date:
April 30, 1982
Creator:
Jansto, S. G.; Mertdogan, A.; Marlin, L. A. & Beaucaire, V. D.
Object Type:
Report
System:
The UNT Digital Library
Imperial County geothermal development. Quarterly report, April 1-June 30, 1982
The activities of the Geothermal Office during the quarter are discussed, including: important geothermal events, geothermal waste disposal, a grant award by the California Energy Commission, the geothermal development meeting, and the current status of geothermal development in Imperial County. Activities of the Geothermal Planner are addressed, including permits, processing of EIR's, and other planning activities. Progress on the direct heat study is reported.
Date:
June 30, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Cancer risks and neutron RBE's from Hiroshima and Nagasaki
The new radiation dose estimates for Hiroshima and Nagasaki are here combined with epidemiologic data from the A-bomb survivors and examined radiobiologically for compatability with other human and experimental data. The new doses show certain improvements over the original T65 doses. However, they suggest for chronic granulocytic leukemia, total malignancies, and chromosome aberrations, at neutron doses of 1 rad, RBEs in excess of 100, higher than expected from other findings. This and other indications suggest that either there are unrecognized systematic problems with the various radiobiological data, or the new doses are deficient in neutrons for Hiroshima, by a factor of about five. If in fact there were actually some 5-fold more dose from neutrons at Hiroshima than estimated by the new calculations, the RBEs would agree well with laboratory results, and other inconsistencies would largely disappear. Cancer risks are estimated for neutrons from the new doses and are compared with those estimated from radiobiologically reconciled doses (the new doses adjusted by adding approximately 5-fold more neutrons). The latter estimates appear more reasonable. For low-LET radiation, cancer risk estimates are altered very little by the new dose estimates for Nagasaki.
Date:
April 30, 1982
Creator:
Dobson, R.L. & Straume, T.
Object Type:
Article
System:
The UNT Digital Library
Educational demonstration program using draft detector to locate air infiltration. Final report
A program of education in air infiltration and weatherization is presented. Materials use and drawings of an air leak detector are included. Advertising materials used are also included. (MHR)
Date:
September 30, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Ocean thermal energy. Quarterly report, January-March 1982
This quarterly report summarizes work of the following tasks as of March 31, 1982: OTEC pilot plant conceptual design review; OTEC methanol; review of electrolyzer development programs and requirements; financial and legal considerations in OTEC implementation; potential Navy sites for GEOTEC systems; hybrid geothermal-OTEC power plants: single-cycle performance estimates; and supervision of testing of pneumatic wave energy conversion system.
Date:
March 30, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Optical pumping of hot phonons in GaAs
Optical pumping of hot LO phonons in GaAs has been studied as a function of the excitation photon frequency. The experimental results are in good agreement with a model calculation which includes both inter- and intra-valley electron-phonon scatterings. The GAMMA-L and GAMMA-X intervalley electron-phonon interactions in GaAs have been estimated.
Date:
June 30, 1982
Creator:
Collins, C.L. & Yu, P.Y.
Object Type:
Article
System:
The UNT Digital Library
Commingled uranium-tailings study. Volume I. Plan for stabilization and management of commingled uranium-mill tailings
This report, prepared in accordance with Section 213 of Public Law 96-540, presents a plan for a cooperative program to provide assistance in the stabilization and management of commingled uranium mill tailings. The report is organized in two volumes, a summary report (Volume I) and a companion technical report (Volume II). Contents of Volume I are: summary; background; amount and condition of the tailings; regulatory requirements; stabilization cost estimates; costsharing alternatives; administrative options and plan implementation; standards and regulations. The DOE recommends that the standards and regulations for tailings stabilization be relaxed and that any program of stabilization be limited to prevention of migration and erosion of the tailings and inadvertent exposure to them. The plan presented here shows the effort and costs that would be incurred if the government were to implement such a plan. The Department makes no recommendation as to the advisability of actually implementing legislation authorizing an assistance program, and stands ready to respond to comments on the plan by Congress, other government agencies, or interested parties.
Date:
June 30, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Characterization of the solid, airborne materials created by the interaction of UF/sub 6/ with atmospheric moisture in a contained volume
Several experiments have been performed in which UF/sub 6/ has been released into air under static conditions and contained in small release chambers (the largest was 8 cu ft) in order to characterize the solid product(s) created by reaction of the UF/sub 6/ with moisture in the air. Relative humidity of the air was varied, experiment to experiment, from < 2 to 100% and the amount of UF/sub 6/ released, experiment to experiment, varied from 5 to 230 mg. The releases were effected by rupture from internal pressure of the UF/sub 6/ containers (some were glass and some were metal) and the solids produced were collected and characterized by electron microscopy, X-ray diffraction, laser light scattering, and a cascaded impactor which used mass measurement to evaluate aerodynamic behavior. Various morphologies and several compounds, dependent upon conditions of release, were observed, i.e., particle size and degree of agglomeration were dependent upon the relative humidity of the air into which the UF/sub 6/ was released and the temperature of the UF/sub 6/ at time of release.
Date:
April 30, 1982
Creator:
Pickrell, P. W.
Object Type:
Report
System:
The UNT Digital Library
Thomson-scattering systems on TMX
This report summarizes the criteria and designs that were used for the two TMX Thomson-scattering systems. It describes the optical, mechanical, electronic, and computer analysis features of these installations. A brief discussion of general Thomson-scattering principles and sensitivity limits is given. Also included are some plasma electron temperature and density measurements from TMX that were obtained through the use of these systems.
Date:
January 30, 1982
Creator:
Goodman, R.K.; Clauser, J.F.; Frank, A.M.; Goerz, D.A. & Lang, D.D.
Object Type:
Report
System:
The UNT Digital Library
Feasibility of using geothermal water at Timberline Lodge
The report discusses the technical and economic feasibility of utilizing geothermal fluids as a heating source at the Timberline Lodge complex. No unsolvable technical problems were discovered.
Date:
March 30, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Low-temperature geothermal resource and stratigraphy of portions of Yakima County, Washington
The low-temperature geothermal resource of portions of Yakima County, south-central Washington, is defined by several least squares linear regression analyses of bottom-hole temperature and depth data. Intra-borehole flow prevents the use of borehole temperature gradients for geothermal resource assessment. Bottom-hole temperature and depth data were separated into fourteen well data groups based on geographic proximity, land slope azimuth, and position within the regional ground-water flow system. The regression analyses of these well data groups indicate that the projected land-surface temperature and geothermal gradient range from 10.6 to 14.0/sup 0/C and from 24.9 to 52.2/sup 0/C/km, respectively. The depth to the 20/sup 0/C isotherm ranges from 142 to 346m. The average projected land-surface temperature and geothermal gradient are approximately 11.3/sup 0/C and 43.0/sup 0/C/km, respectively. The average depth to the 20/sup 0/C isoterm is approximately 202m. The projected land-surface temperature appears to decrease and the depth to the 20/sup 0/C isotherm appears to increase as the land-surface elevation of the well dat group increases. Stratigraphic correlation diagrams developed from borehole geophysical and lithologic logs are given for localities within the lower Yakima, Black Rock, Moxee, Ahtanum, Cowiche, and Naches valleys. These correlation diagrams are combined with their respective borehole temperatue logs …
Date:
July 30, 1982
Creator:
Biggane, J.
Object Type:
Report
System:
The UNT Digital Library
ANL Micrometeorological Measurements of Particle Sulfur Deposition at the 1981 Dry Deposition Intercomparison Experiment.
The Dry Deposition Intercomparison Experiment conducted in September, 1981, was designed by the Illinois State Water Survey as a pilot effort to evaluate various methods of measuring pollutant dry deposition. A more extensive experiment was planned for June, 1982, when additional and improved techniques were to be implemented. The 1981 study focused on sulfate aerosol, while the 1982 experiment will consider a wider range of particulate substances and some gases. At issue is whether traditional monitoring methods using surrogate surfaces to collect dry deposition can routinely provide estimates in agreement with results from applications of intensive micrometeorological techniques. This report summarizes the micrometeorological data gathered in 1981 by Argonne National Laboratory.
Date:
June 30, 1982
Creator:
Wesely, M. L.; Cook, D. R. & Hart, R. L.
Object Type:
Report
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 74, No. 39, Ed. 1 Thursday, September 30, 1982
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
September 30, 1982
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 74, No. 52, Ed. 1 Thursday, December 30, 1982
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
December 30, 1982
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
Relationship of rock physics to geothermal energy technology. Final report, February 1, 1981-January 31, 1982
Separate abstracts were prepared for eight papers which comprise the bulk of this report. A short overview of the contract work is included. (MHR)
Date:
October 30, 1982
Creator:
Warren, N. & Coffey, N.
Object Type:
Report
System:
The UNT Digital Library
Performance testing of super Fe magnet
A summary is given of the data obtained during the testing of a proof of principle iron-dominated low field and cost, high efficiency dipole. The magnet was tested for performance with the design field of 2.0T.
Date:
June 30, 1982
Creator:
McInturff, A.D.
Object Type:
Report
System:
The UNT Digital Library
Short and long-term tests of elastomers with hot hostile fluids. Environmental Compatibility Test Program final report
Equipment manufacturers and elastomer houses were called to find the best currently available high-temperature elastomers. Tensile specimens of 46 such compounds were immersion tested for five days in six 190C fluids of interest: isobutane, brine, ASTM No. 1 oil, ASTM No. 3 oil, Pacer DHT-185M synthetic oil, and Chevron Cylinder Grade 460X oil. The best eight were selected based upon the least change in mechanical properties. These eight were then simultaneously tested (a) by immersion in five 190C fluids for six months and (b) as 0-rings for 46 hours at 190C, 230C, and 265C (accelerated ageing) in three fluids and at a differential pressure of 21 MPa. Based upon these 0-ring tests, four compounds were selected for testing as 0-rings in three 204C fluids at 21 MPa differential pressure. The data were evaluated and conclusions were drawn. Conclusions and recommendations are provided. There was immersion testing of primarily L'Garde compounds in brine and CL3 mineral oil for 6 months at 190C. L'Garde had formulated several compounds specifically for 260C brine, and their applicability to a specific problem was assessed early in the program.
Date:
December 30, 1982
Creator:
Friese, G.J.
Object Type:
Report
System:
The UNT Digital Library
Shape memory alloy seals for geothermal applications. Final report. Report ESG-82-14
A novel temperature-actuated seal for geothermal applications is under development. This program uses the shape memory property of nickel-titanium (Nitinol) alloys to achieve an improved seal in geothermal downhole pumps. Nitinol flange face seals and pump shaft seals have been designed, fabricated, and tested. It has been demonstrated that the shape memory effect of Nitinol alloys can be utilized to activate and maintain a leaktight seal in geothermal environments.
Date:
July 30, 1982
Creator:
Friske, Warren H. & Schwartzbart, Harry
Object Type:
Report
System:
The UNT Digital Library
Energy-conserving perennial agriculture for marginal land in southern Appalachia. Final technical report
USDA economists predict the end of surplus farm production in the US within this decade. More and more marginal land will be cropped to provide feed for the growing world population and to produce energy. Much of this potential cropland in Southern Appalachia is poorly suited to annual crops, such as corn. Perennial crops are much better suited to steep, rocky, and wet sites. Research was undertaken on the theoretical potentials of perennial species with high predicted yields of protein, carbohydrates, or oils. Several candidate staple perennial crops for marginal land in Southern Appalachia were identified, and estimates were made of their yields, energy input requirements, and general suitabilities. Cropping systems incorporating honeylocust, persimmon, mulberry, jujube, and beech were compared with corn cropping systems. It appears that these candidate staple perennials show distinct advantages for energy conservation and environmental preservation. Detailed economic analyses must await actual demonstration trials, but preliminary indications for ethanol conversion systems with honeylocust are encouraging. It is suggested that short-term loans to farmers undertaking this new type of agriculture would be appropriate to solve cash-flow problems.
Date:
January 30, 1982
Creator:
Williams, G.
Object Type:
Report
System:
The UNT Digital Library
Electric-car range extension through hybrid modification. Final report
A gasohol powered generator set has been installed on a 1210 pound electrically powered Citicar. A power supply has been designed to convert the alternating current of the generator to run the car at a level of 36 vdc maximum. This is less than the 48 vdc used by the Citicar battery pack but which greatly exceeds the ratings on the 3.5 hp General Electric motor. Tests were done to see the minimum stepping voltage to give smooth acceleration and this was found to be 18 vdc. Tests with the generator-power supply set showed a level path consumption of 35 to 40 mpg. Switching between the generator and battery supplies is accomplished manually. The conclusion is that hybridization can be accomplished fairly reasonably but much needs to be done on the development of the electric car itself and particularly battery systems.
Date:
June 30, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library