246 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Gas Injection"  
Results: 1 - 24 next
open access

Development of a Venturi Type Bubble Generator for Use in the Molten-Salt Reactor Xenon Removal System

Description: A venturi type bubble generator was developed for application in the xenon removal system proposed for a molten-salt breeder reactor. Gas injected into the high velocity liquid at the venturi throat is fromed into bubbles by the fluid turbulence in the diffuser cone. Tests were conducted using aqueous solutions to determine the various pressure drops of the bubble generator as a function of liquid and gas flow rates and to determine the bubble diameter produced. Empirical relationships were dev… more
Date: December 31, 1972
Creator: Gabbard, C. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental two-phase liquid-metal magnetohydrodynamic generator program. Annual report. [NaK-nitrogen generator]

Description: A new diverging-channel liquid-metal MHD generator with gas injection along the insulating walls was built and placed in operation in late 1974. This generator yielded nearly-constant liquid velocity along the channel for near-design conditions, as desired for best performance. Extensive measurements of the generator terminal and internal parameters were made over a range of gas and liquid flow rates, magnetic field strengths, and load resistance values. Data are given for generator efficiency … more
Date: November 1, 1976
Creator: Petrick, M; Fabris, G; Cole, R; Hantman, R; Pierson, E & Cutting, J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dow shale site tracer gas pressurization study. Final report. Appendix: energy from in situ processing of Antrim oil shale

Description: A series of tracer gas pressurization experiments were undertaken at the Dow shale site at Peck, Michigan. The study was conducted to evaluate flow communication between boreholes open to both the Antrim and False Antrim layers of the retort volume, determine permeability and porosity distributions within the retort volume, and to assess qualitatively the uniformity of the fracturing or rubblization within the retort volume. Results show that the system is non-uniform. Flow from Well No. 4 to t… more
Date: October 1, 1977
Creator: Peterson, E.W. & Lagus, P.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Growth of molten core debris pools in concrete. Progress report, March 1, 1977--November 30, 1977. [LMFBR]

Description: Experiments have been conducted using a volumetrically-heated pool with noncondensable gas injection at the boundaries to simulate the heat transfer processes taking place in molten core debris/concrete systems. Measurements of the upward, downward, and sideward heat transfer rates have been made over wide ranges of internal Rayleigh number (6.0 x 10/sup 5/ < Ra < 2.7 x 10/sup 9/), superficial gas velocity (0 < V/sub g/ < 2.5 cm/min), and pool aspect ratio (1.32 < W/L < 5.16).… more
Date: November 1, 1977
Creator: Abdel-Khalik, S I
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Western gas sands project status report

Description: The Western Gas Sands Project Plan, Project Implementation Plans, Project Plan Document FY 78 and the Quarterly Basin Activities Report are in various stages of preparation. Information gathering by the U.S. Geological Survey (USGS) of the initial data base for many of the project activities is continuing. Some base maps are complete and field investigations in the principal areas of interest are being conducted. Investigation of tight gas sands with scanning electron microscope, X-ray diffract… more
Date: December 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Removal of hydrogen sulfide from simulated geothermal brines by reaction with oxygen (II). Final report, July 1, 1977-December 31, 1978

Description: Air was injected into simulated geothermal brines to determine if the costs and hazards of the hydrogen sulfide oxidation process could be substantially reduced. Oxygen was injected into a two-phase flow of simulated geothermal brine. The data obtained was to identify: the optimum oxygen to hydrogen sulfide mole ratio to remove the H/sub 2/S and still avoid the corrosion problem resulting from excess oxygen, the effect of varying sulfide levels on the effectiveness of oxygen injection and the o… more
Date: January 1, 1978
Creator: Southard, R. W.; Wilson, J. S. & Bullard, G. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tertiary oil recovery: potential application and constraints

Description: The technology of tertiary oil recovery methods is described and potential economic and environmental constraints to future commercial application are identified. Oil recoverable by tertiary techniques represents a domestic resource of between 11- and 42-billion barrels. Estimates of additional oil supplies from tertiary methods by the year 2000 range from 1 to 8 million barrels per day, depending on the price of oil and the rate of technological development. The principal constraints to large-… more
Date: June 1, 1978
Creator: Geffen, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Western Gas Sands Project status report

Description: This edition of the WGSP status report summarizes September 1978 progress of the government-sponsored projects directed towards increasing gas production from the low-permeability gas sands of the western United States. Background information is provided in the September 1977 Status Report, NVO/0655-100. The Williston Basin Symposium was held in Billings, Montana, the 24th through the 27th of September 1978. The USGS continued work on characterization and assessment of the resource in the four … more
Date: October 31, 1978
Creator: Atkinson, C.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Langmuir probe measurements of the scrape-off plasma in ISX-A

Description: A fixed double Langmuir probe was used to investigate the temporal behavior of the scrape-off plasma in the ISX-A tokamak. During gas puffing, the ion saturation current dropped rapidly to a very low level while the line average density showed a steady increase. This sudden transition was due mainly to a density change of more than a factor of five while the electron temperature remained relatively constant at approximately 10 eV. This behavior was easily observed at points away from the limite… more
Date: November 1, 1978
Creator: Namkung, W.; England, A. C. & Eldridge, O. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Time dependence of gases from plasma-wall interactions in ISX-A

Description: Numerous papers have been published concerning radiation damage and thermal properties of first walls in tokamak reactors. However vacuum properties are also important, particularly as regards the adsorption and release of gases during and immediately following tokamak discharges. We have studied the time evolution of working and impurity gases by means of a quadrupole mass spectrometer attached to the ISX-A tokamak. These results were compared with measurements in a similar (304L stainless ste… more
Date: January 1, 1979
Creator: Simpkins, J.E. & Colchin, R.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Western Gas Sands Project. Status report, 1 June--30 June 1979

Description: This edition of the WGSP status report summarizes June 1979 progress of government-sponsored projects directed toward increasing gas production from the low-permeability gas sands of the western United States. Background information is provided in the September 1977, status report, NVO/0655-100. Work by the USGS toward resource assessment in the four primary study areas continued. CK GeoEnergy started a core hole in Grand County, Utah. During June, projects of the National Laboratories and Ener… more
Date: January 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Regimes of operation in the Princeton Large Torus

Description: In the quest for optimum discharge conditions in the Princeton Large Torus (PLT), a variety of discharge regimes have been produced. These separate broadly into two main categories - those regimes with m greater than or equal to 2 oscillatory MHD instabilities and often hollow electron profiles for tungsten limiters, and those regimes for which the electron temperature is sufficiently peaked to support the internal sawtooth or near-sawtooth (m = 1) instability. The internal sawtooth regime is f… more
Date: October 1, 1979
Creator: Hosea, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Deuterium and tritium fueling in an ETF/INTOR plasma with divertor

Description: Fueling by pellets and neutral gas in the presence of a divertor is examined with a one-dimensional multispecies transport code. Deuterium, tritium, and alpha particles are treated as independent thermal species. With an efficiently operating divertor, it becomes impossible to maintain high plasma density (anti n approx. 10/sup 14/cm/sup -3/) with neutral gas fueling alone because of the high probability of the gas being ionized in the scrapeoff layer. Pellet fueling significantly reduces the p… more
Date: January 1, 1980
Creator: Houlberg, W.A.; Howe, H.C. & Attenberger, S.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development and field testing of a process for recovering heavy crude oil in the Carlyle pool-Allen County, Kansas using the Vapor Therm generator. Final report

Description: A Vapor Therm generator capable of producing steam and inert gases was built for conditions encountered in the Carlyle pool, and is capable of delivering heated gases at 900 psi and 700/sup 0/F. New wells were drilled in a five spot pattern with an inter-well distance of 208.7 ft. Logs and cores from these new wells were obtained and the subsurface reservoir was evaluated. Oil content of 1197 BSTO/Ac-Ft was encountered. This oil was 19.5/sup 0/ API with a viscosity of 1026 cps at 70/sup 0/F. Th… more
Date: September 1, 1980
Creator: Sperry, J.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Paris Valley Combination Thermal Drive Pilot Demonstration Test. Final report

Description: A wet combustion pilot within the Paris Valley Field, Monterey County, California was initiated in January, 1975 in order to determine the technical and economic feasibility of this enhanced recovery process within a sandstone reservoir having a very viscous crude. Cyclic steaming was also performed and evaluated. Due to the low oil production rates, which were not capable of offsetting the high operating costs, the pilot was terminated during March, 1979. Eighteen producing wells, five air inj… more
Date: September 1, 1980
Creator: Shipley, R.G. Jr.; Meldau, R.F. & White, P.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Plasma-gun fueling for tokamak reactors

Description: In light of the uncertain extrapolation of gas puffing for reactor fueling and certain limitations to pellet injection, the snowplow plasma gun has been studied as a fueling device. Based on current understanding of gun and plasma behavior a design is proposed, and its performance is predicted in a tokamak reactor environment.
Date: November 1, 1980
Creator: Ehst, D.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

One-dimensional magnetohydrodynamic calculations of a hydrogen-gas puff

Description: A one-dimensional Lagrangian calculation of the implosion of a hydrogen gas puff is presented. At maximum compression, 60% of the mass is located in a density spike .5 mm off the axis with a half width of 40 ..mu..m. The temperature on axis reaches 200 eV.
Date: April 20, 1981
Creator: Maxon, S. & Nielsen, P.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Central helium density measurements in PLT

Description: The central helium density in PLT has been deduced from measurements of the ratio of d-/sup 3/He to d-d fusion reactions during deuterium neutral beam injection. The inward transport time for /sup 3/He puffed at the edge plasma was 10 ..-->.. 30 msec. The decay time of the central /sup 3/He density increased with electron density, varying from 0.3 sec to greater than 1.0 sec over the density range of (1 ..-->.. 5) x 10/sup 13/ cm/sup -3/.
Date: July 1, 1981
Creator: Chrien, R. E.; Eubank, H. P.; Meade, D. M. & Strachan, J. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of neutral-beam injection and gas puffing on deuterium and impurity levels in the scrapeoff layer of ISX-B

Description: Plasma-material interactions in the scrapeoff region of a tokamak have important effects on the overall performance of the machine. In order to prudently select the most-appropriate materials for walls, limiters, and armor plate, it is necessary to characterize the plasma that interacts with these surfaces and to understand what effect different modes of operation of the tokamak have on plasma characteristics. We have made a series of measurements on the ISX tokamak using deposition-probe techn… more
Date: October 1, 1981
Creator: Zuhr, R. A.; Roberto, J. B. & Withrow, S. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Radiated energy and impurity density changes during intensive hydrogen influx in the PLT tokamak

Description: During a discharge a puff of hydrogen is admitted, sufficient to more than triple the plasma density, and the resulting changes in various plasma parameters are determined. The absolute densities of various wall and limiter (carbon) materials are found to decrease by a substantial fraction, probably as a result of lowered peripheral temperature. The radiation pattern deduced from spectroscopically determined plasma composition is in good quantitative agreement with direct bolometric measurement… more
Date: December 1, 1981
Creator: Hinnov, E.; Hosea, J.; Hsuan, H.; Jobes, F.; Meservey, E.; Schmidt, G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tracer experiments in Eastern Devonian shale

Description: For the purpose of characterizing the properties of the Eastern Devonian gas shale, a seven-day tracer experiment was carried out in August of 1981 by the Los Alamos National Laboratory as part of the DOE's Offset-Well Test. Two wells had been drilled in a Columbia Gas Company field in southeastern Ohio, each with a downhole separation of approximately 120 feet from an existing production well. The isoceles triangle formed by the three wells had an apex angle of approximately 110 degrees. About… more
Date: January 1, 1982
Creator: Cook, Thomas L.; Brown, Lee F. & Meadows, Wayne R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Density rise experiment on PLT

Description: The evolution of the density profile in PLT during intense gas puffing is documented and analyzed. Measurements of the spectrum of low energy edge neutrals and of the change in central neutral density indicate that charge-exchange processes alone cannot account for the central density rise. The transient density profile changes can be reproduced numerically by a diffusivity of approx. 10/sup 4/ cm/sup 2//s, and a spatially averaged inward flow of 10/sup 3/ cm/s. These transport coefficients are… more
Date: May 1, 1982
Creator: Strachan, J.D.; Bretz, N. & Mazzucato, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gas-fueling studies in the PDX tokamak

Description: The characteristics of gas-fueling of high power discharges in the PDX tokamak have been investigated using gas-flow, neutral pressure, plasma density, and H..cap alpha.. emission measurements. The efficiency of gas-fueling was measured for various plasma configurations by comparison of the measured gas-influx rates to the particle exhaust rates inferred from particle decay time measurements. We observe that the fueling efficiency decreases significantly with increasing plasma density as the io… more
Date: August 1, 1982
Creator: Dylla, H. F.; Blanchard, W. R.; Budny, R.; Fonck, R. J.; Owens, D. K. & Schmidt, G. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fusion-reactor plasmas with polarized nuclei. II

Description: New techniques of bulk polarization could be used to fuel a reactor with polarized hydrogenic atoms, so as to form a plasma of polarized nuclei. Theoretical calculations indicate that, once the nuclei of the plasma are polarized in some preferred state, they can maintain this state with a probability near 100% during their lifetime in the reactor, including possible recycling. There are a number of practical advantages to be gained from the use of polarized plasma in a fusion reactor. The nucle… more
Date: November 1, 1982
Creator: Kulsrud, R. M.; Furth, H. P.; Valeo, E. J.; Budny, R. V.; Jassby, D. L.; Micklich, B. J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen