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Thermo-chemical energy conversion and storage. Final report
Research support for the cyclohexane/benzene heat pipe development program at Sandia Laboratories is reported. The apparent kinetics of the gas-phase catalytic dehydrogenation of cyclohexane to benzene in an internally recirculated (gradientless) reactor over the temperature range from 500 to 800/sup 0/F at 1 atm at various space velocities was studied. A kinetic model was developed based on a reversible mass-action rate expression and a catalyst effectiveness factor which is able to correlate both the conversion and reaction rate data very well over the temperature range 500 to 750/sup 0/F. The data taken at 800/sup 0/F appear to be qualitatively and quantitatively different than the data taken at the lower temperatures. It is not as yet clear, whether this can be attributed to a change in kinetic mechanism or some reversible alteration of the catalyst surface at the higher temperature. The formation of side products in this system over the same temperature range was also studied. Both the number and amount of side product(s) formed increases with increasing temperature and residence time. Over the temperature range from 500 to 600/sup 0/F the side products produced appear to be strongly related to the presence of low molecular weight unsaturated hydrocarbon impurities in …
Date:
September 1, 1978
Creator:
Ritter, A.B.; DeLancey, G.B.; Schneider, J. & Silla, H.
Object Type:
Report
System:
The UNT Digital Library
Hydrodynamic design loads for the OTEC cold water pipe
Ocean current and/or plant motion crossflows induce time dependent hydrodynamic loads on the OTEC cold water pipe due to vortex shedding. Design criteria were established for mean and fluctuating loads based on a review of the literature, analysis of test data acquired by SAI under a previous experimental program and an analytical extension of test results to higher Reynolds number. Baseline loads were specified for rigid cylinders in uniform flows. Modifications to the loads by current shear, stratification and cylinder motion, were investigated and final design criteria established. Limited structural response calculations were performed to demonstrate the use of the design criteria and to investigate briefly the possible structural response mode. Comparisons were made with alternate hydrodynamic loads, and recommendations were made for experimental verification.
Date:
September 1, 1978
Creator:
Hove, D.; Shih, W. & Albano, E.
Object Type:
Report
System:
The UNT Digital Library
Synthesis gas demonstration plant program, Phase I. Trade-off studies report IV, air quality control alternatives
For particulate removal systems four alternate methods were considered: wet venturi scrubbers, combination of multicyclonic mechanical dust collectors (MDC) and wet venturi scrubbers; electrostatic precipitators (ESP), and baghouses. For sulfur dioxide (SO/sub 2/) removal eleven alternate systems were considered: magnesia slurry scrubbing, sodium sulfite scrubbing (Wellman-Lord), ammonia (clear liquor), citrate, phosphate (Aqua-Claus), steam stripping, aqueous carbonate, ammonia (semi-dry), carbon sorption, copper oxide, and catalytic oxidation. On the basis of this investigation it is recommended that a 99.65 percent efficiency ESP/Wellman-Lord System be utilized for this project. The technical and economic bases for this recommendation are given. (LTN)
Date:
September 1, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Conventional combustion environmental assessment program
Fossil fuels have composed the largest segment of the nation's energy resources. This report discusses conventional methods of converting fossil fuels to usable forms of energy, associated with environmental penalties. The conventional combustion of fossil fuels has multimedia impacts which affect the air, land and water. 7 refs., 11 figs., 6 tabs.
Date:
September 1, 1978
Creator:
Ponder, W. H.; Kenkeremath, D. C. (Environmental Protection Agency, Research Triangle Park, NC (USA). Industrial Environmental Research Lab. & Mitre Corp., McLean, VA (USA). METREK Div.)
Object Type:
Report
System:
The UNT Digital Library
Effects of a flexible definition of new source performance standards for utility boilers firing anthracite coal
The primary constraints and incentives affecting the viability of increased anthracite production for use as a utility boiler fuel are related to: (1) inherent advantages and disadvantages of anthracite versus bituminous coal, (2) geographical considerations, and (3) the existing and future state and federal regulatory framework. Anthracite is inherently low in sulfur content (a nominal 0.7% versus 2.0% for bituminous coal) and thus is capable of providing energy in a more environmentally beneficial manner than alternative coal resources. In addition, anthracite is characterized by a higher energy output (5% higher per pound) than bituminous coal. On the other hand, anthracite is difficult to mine because of its hardness and the geological environment where it occurs, and thus incurs an initial cost disadvantage relative to alternative fuels. Anthracite has a higher ignition and burning temperature than bituminous coal and thus requires more costly boilers. Additionally, anthracite requires more costly particulate-removal systems than does bituminous and is somewhat more costly to tranport by rail. A potential major negative factor is the variability of sulfur content within anthracite deposits. The geographic location of the anthracite region creates a number of economic and environmental advantages that influence the viability of increased anthracite production. Anthracite …
Date:
September 1, 1978
Creator:
Buckley, B; DeFieux, R; Holzheimer, R; Lowenthal, S; Murphy, B & Watson, J
Object Type:
Report
System:
The UNT Digital Library
NO/sub x/ emissions from Hanford nuclear fuels reprocessing plants
Operation of the existing Hanford nuclear fuel reprocessing facilities will increase the release of nitrogen oxides (NO/sub x/) to the atmosphere over present emission rates. Stack emissions from two reprocessing facilities, one waste storage facility and two coal burning power plants will contain increased concentrations of NO/sub x/. The opacity of the reprocessing facilities' emissions is predicted to periodically exceed the State and local opacity limit of twenty percent. Past measurements failed to detect differences in the ambient air NO/sub x/ concentration with and without reprocessing plant operations. Since the facilities are not presently operating, increases in the non-occupational ambient air NO/sub x/ concentration were predicted from theoretical diffusion models. Based on the calculations, the annual average ambient air NO/sub x/ concentration will increase from the present level of less than 0.004 ppM to less than 0.006 ppM at the Hanford site boundaries. The national standard for the annual mean ambient air NO/sub 2/ concentration is 0.05 ppM. Therefore, the non-occupational ambient air NO/sub x/ concentration will not be increased to significant levels by reprocessing operations in the Hanford 200 Areas.
Date:
September 15, 1978
Creator:
Pajunen, A. L. & Dirkes, R. L.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0408.0053]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Oklahoma State Fair 1978-1979"
Date:
September 25, 1978
Creator:
Vahlberg, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0408.0062]
Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "Oklahoma State Fair 1978-1979"
Date:
September 24, 1978
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0408.0045]
Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma State Fair 1978-1979"
Date:
September 29, 1978
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
BASEMENT BOX 66.0374
Photograph taken during daylight of a house destroyed by fire. Caption: "Stand stark against the sky Sunday after a Saturday night fire destroyed this home at 11117 N Leaning Elm and took the life of Mrs. Ida J. Green, wife of Joseph J. Green."
Date:
September 16, 1978
Creator:
Traverse, Cliff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0408.0043]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Oklahoma State Fair 1978-1979"
Date:
September 15, 1978
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0408.0061]
Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "Oklahoma State Fair 1978-1979"
Date:
September 22, 1978
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0408.0038]
Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma State Fair 1978-1979"
Date:
September 21, 1978
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0408.0054]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Oklahoma State Fair 1978-1979"
Date:
September 22, 1978
Creator:
Reed, Monty
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0408.0059]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Oklahoma State Fair 1978-1979"
Date:
September 22, 1978
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0100.0432]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Nine-year-old Jerry Myers tries out the steering on a go-kart to be awarded to the Boy Scout or Cub Scout selling the most tickets to this year's Scout-O-Rama, while Scout official Jerry Gamble and 15-year-old Pat Russell look on."
Date:
September 22, 1978
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Domain and Surface Structures of Sodium Tungsten Bronzes, NaxWO₃ (0.4 [x [1)
The domain and surface structures of metallic sodium tungsten bronzes, NaxWO₃, 0.4 < x < 1, were studied using optical microscopy, supplemented by chemical methods, photoelectron spectroscopy, electron microscopy, etc. The birefringent, multidomain structure of the bronze is exhibited by a sodium-deficient, epitaxial surface film and hence is not, as reported elsewhere, a bulk property. The film can be synthesized by anodic electrolysis in alkaline solution and can exist only epitaxially with the substrate. It is chemically inert, translucent, and often laminated to a multilayered film. The film domain is hypersensitive to lateral stress and to thermal change, and appears to be modulated by minute structural changes of the substrate. This epitaxial modulation of the film is strikingly large at the phase transitions of the substrate induced by slightly different tiltings of the oxygen octahedra. The domain-wall movement is often slow enough to be visible, and that by thermal effect is occasionally accompanied by an audible, high-pitched, snapping sound.
Date:
September 1978
Creator:
Atoji, Masao
Object Type:
Report
System:
The UNT Digital Library
Tritium and Hydrogen Transport in LMFBR Systems: EBR-II, CRBR, and FFTF
A tritium and hydrogen transport model has been employed to simulate concentration profiles, tritium losses to auxiliary containment systems, and cold trap burdens for EBR-II, CRBR, and FFTF. Experimental data from EBR-II were found to correlate well with calculated tritium and hydrogen profiles. A major change relative to previous transport models, namely, the inhibiting effect of oxide coatings on tritium permeation through reactor structural surfaces, has been incorporated into the current model. Tritium release rates to auxiliary systems where oxide barrier effects were included were predicted to be approximately two orders of magnitude lower than those for the reference case where structural surfaces were assumed to be totally oxide-free. Tritium releases during operation of large LMFBRs are expected to present essentially no hazard to the environment.
Date:
September 1978
Creator:
Renner, T. A. & McPheeters, C. C.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of Ceramic Refractories for Slagging Gasifiers : Summary of Progress to Date
Commercial refractories were tested for up to 500 h in both basic and acidic slags. The slag compositions typify those expected in slagging coal gasifiers. The slag temperatures ranged up to 1600 degrees C. Compositions tested have included silicon carbides, chrome-alumina-magnesia spinels, and alumina and magnesia-based refractories with various amounts of chromia and silica. In some tests, the cold faces were water cooled. With water cooling, the silicon carbides showed virtually no attack after 500 h. In the absence of water cooling, the chrome-alumina-magnesia spinels were the most resistant to slag attack but were subject to thermal-shock cracking. Alumina-chrome refractories performed well in acid slags when water cooled, are probably more stable than silicon carbide in coal-gasification atmospheres, and, in the form of ramming mixes, showed excellent thermal-shock resistances. Plans for future testing are described.
Date:
September 1978
Creator:
Kennedy, C. R.; Swaroop, R.; Jones, D. J.; Fousek, R. J.; Poeppel, R. B. & Stahl, D.
Object Type:
Report
System:
The UNT Digital Library
PTAC: a Computer Program for Pressure-Transient Analysis, Including the Effects of Cavitation
PTAC was developed to predict pressure transients in nuclear-power-plant piping systems in which the possibility of cavitation must be considered. The program performs linear or nonlinear fluid-hammer calculations, using a fixed-grid method-of-characteristics solution procedure. In addition to pipe friction and elasticity, the program can treat a variety of flow components, pipe junctions, and boundary conditions, including arbitrary pressure sources and a sodium/water reaction. Essential features of transient cavitation are modeled by a modified column-separation technique. Comparisons of calculated results with available experimental data, for a simple piping arrangement, show good agreement and provide validation of the computational cavitation model. Calculations for a variety of piping networks, containing either liquid sodium or water, demonstrate the versatility of PTAC and clearly show that neglecting cavitation leads to erroneous predictions of pressure-time histories.
Date:
September 1978
Creator:
Kot, C. A. & Youngdahl, C. K.
Object Type:
Report
System:
The UNT Digital Library
[Coaches' Film: North Texas State University vs. Mississippi, 1978]
Partial footage of the 1978 football game between North Texas State University and Mississippi State in Dallas, Texas, at the cowboys stadium, shot for coaching purposes. The game was held on September 9th, 1978 and the final score was 5-17, Mississippi.
Date:
September 9, 1978
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
[Coaches' Film: North Texas State University vs. UT Arlington, 1978]
Partial footage of the 1978 football game between North Texas State University and UT Arlington in Denton, Texas, shot for coaching purposes. The game was held on September 9th, 1978 and the final score was 28-23, North Texas.
Date:
September 16, 1978
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
[Coaches' Film: North Texas State University vs. New Mexico, 1978]
Partial footage of the 1978 football game between North Texas State University and New Mexico State in Las Cruces, New Mexico, shot for coaching purposes. The game was held on September 23rd, 1978 and the final score was 22-21, North Texas.
Date:
September 23, 1978
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
[Coaches' Film: North Texas State University vs. Oklahoma State, 1978]
Partial footage of the 1978 football game between North Texas State University and Oklahoma State in Denton, Texas, shot for coaching purposes. The game was held on September 30th, 1978 and the final score was 12-7, North Texas.
Date:
September 30, 1978
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library