Stage separation theory (open access)

Stage separation theory

The theory and a mathematical treatment of various stage-type isotope separation methods are presented. (TFD)
Date: May 1, 1978
Creator: Von Halle, E.
Object Type: Report
System: The UNT Digital Library
Geothermal Loan Guaranty Program and its impact on geothermal exploration and development (open access)

Geothermal Loan Guaranty Program and its impact on geothermal exploration and development

The study showed that the Geothermal Loan Guaranty Program has had only a negligible effect on geothermal development and the response to the program was far less than expected. The streamlining of environmental regulations and leasing policies, and the granting of intangible drilling cost write-offs and depletion allowances to operators would have had a greater impact on geothermal energy development. The loan guaranty program did not promote the undertaking of any new projects that would not have been undertaken without it. The program only accelerated the pace for some development which might have commenced in the future. Included in the study are recommendations for improving the operation of the program thereby increasing its attractiveness to potential applicants.
Date: May 1978
Creator: Nasr, L.H.
Object Type: Report
System: The UNT Digital Library
Kaiser Engineers Railroad Tractive Effort Test, LOFT - A and M track (open access)

Kaiser Engineers Railroad Tractive Effort Test, LOFT - A and M track

This LTR contains the original results of the Railroad Locomotive Tractive Effort Test performed by Kaiser Engineers on July 29, 1965, using an existing 24-wheel 500-ton dolly and the existing shielded locomotive. The test was conducted to confirm calculations of the tractive effort required to move the LOFT dolly (MTA) through the four-rail high bay curve and the curve into the LOFT containment vessel.
Date: May 9, 1978
Creator: White, E.R.
Object Type: Report
System: The UNT Digital Library
Transition metal-graphite catalysts for production of light hydrocarbons from synthesis gas. Interim report, August 1, 1976-April 30, 1978 (open access)

Transition metal-graphite catalysts for production of light hydrocarbons from synthesis gas. Interim report, August 1, 1976-April 30, 1978

The unusual and potentially significant selectivity behaviors exhibited by iron- and, particularly, cobalt-graphite intercalates during CO hydrogenation warrant continued investigation, using a differential/integral flow-type reactor capable of operating at elevated reaction pressure, i.e., 0 to 300 psig. Such a system will enable further characterization of these catalysts to be made in at least three important, but heretofore unexamined, areas: this will permit the rapid acquisition of such important data as comparative turnover frequencies and apparent activation energies for CO conversion. The accuracy, convenience, and flexibility of the measurements will be greatly improved with a flow-type reaction system. Measurements of deactivation properties perforce require the use of a flow reactor and cannot be meaningfully made using a closed reaction system. Particular emphasis will be placed on establishing the effects of varying pretreatment conditions on activity/selectivity responses of the graphitic materials compared to their supported homologs. Additional information about catalyst coking properties and consequent mass balances will also be obtainable from such experiments. The most important information accessible by an elevated-pressure flow reactor are the comparative dependences of product selectivities on reaction pressure for both pairs of catalysts. In view of the already greater tendency of iron- and cobalt-graphite catalysts to produce …
Date: May 1978
Creator: Rosynek, Michael P.
Object Type: Report
System: The UNT Digital Library
Measurement of the total hemispherical emittance of copper and of spectrally selective surfaces. Report No. 2992 (open access)

Measurement of the total hemispherical emittance of copper and of spectrally selective surfaces. Report No. 2992

The transient calorimetric technique is used to measure the temperature dependence of the total hemispherical emittance of polished copper, solar selective thin films on copper and a solar selective thin film on a metal film on quartz. Experimental results on copper do not agree with the predictions of the Davisson and Weeks theory. A new theory of the emissivity of metals based on the Drude Free Electron model is developed and compared with the expermental data on copper. With no adjustable parameters, good agreement between this theory and experiment is obtained.
Date: May 1, 1978
Creator: Smalley, R.
Object Type: Report
System: The UNT Digital Library
TAN/LOFT 13. 8 kV, 2. 4 kV and 480 V relay and circuit breaker coordination study. Revision A (open access)

TAN/LOFT 13. 8 kV, 2. 4 kV and 480 V relay and circuit breaker coordination study. Revision A

The coordination study of 1972 performed by Mr. N.A. Williams of Kaiser Engineers (LTR 13 10-3) is examined and updated based upon 1977 loads. Present overcurrent relay settings are presented and evaluated for adequacy in terms of the updated short circuit analysis. Recommendations are made for new relay and trip device settings to improve coordination. Switchgear ratings are examined against available short circuit currents, and recommendations are made where applicable. Vital MCC-A and B are examined in detail to provide maximum continuity of service for every fault contingency. A recommendation is made to improve the reliability of these buses.
Date: May 2, 1978
Creator: Burnett, J.E.
Object Type: Report
System: The UNT Digital Library
Designing passive solar buildings to reduce temperature swings (open access)

Designing passive solar buildings to reduce temperature swings

Control of temperature swings is a major consideration in design of passive solar heated buildings - especially so as the designer seeks to achieve most of the building heat from the sun. Observations of temperature swings in several passive buildings are cited. Methods of temperature control are discussed, both by means of control intervention such as using of auxiliary backup heating, ventilation, and blowers, and by means of building design. The design approach is preferred as the main course with the intervention techniques used for fine tuning.
Date: May 1, 1978
Creator: Balcomb, D.
Object Type: Report
System: The UNT Digital Library
Understanding public perspectives on nuclear energy (open access)

Understanding public perspectives on nuclear energy

The levels of and underlying bases for public support, opposition, and ambivalence toward continued nuclear power development are reviewed. Data are presented on the public's general evaluations of nuclear power by indicating the extent of support and opposition, by discussing the interpretation of undecided responses, and by examining changes in public opinion over time. Differences in general attitudes toward nuclear energy related to demographic characteristics, including sex, age, education, income, and geographic region are examined. Bases for explaining public support of and opposition to nuclear power are discussed by identifying consistent patterns of attitudes among pronuclear individuals and among antinuclear individuals in the general public.
Date: May 1, 1978
Creator: Melber, B.D. & Rankin, W.L.
Object Type: Article
System: The UNT Digital Library
Hydrology and geochemistry of a Hawaiian geothermal system: HGP-A (open access)

Hydrology and geochemistry of a Hawaiian geothermal system: HGP-A

A water quality monitoring program of the Hawaii Geothermal Project well A (HGP-A) was conducted for downhole depth samples and continuous discharge samples in 1976 to 1977. The well water was slightly saline (about 5 to 10 percent ocean water) and nearly depleted of magnesium, but contained high concentrations of silica and sulfide. The chemical composition of the well water did not vary much with depth even though the sampling reached the well bottom (approximately 1768 m (5800 feet) below sea level). The well fluid temperature was higher than that of any Hawaii ground water; a maximum of 358/sup 0/C (676/sup 0/F) was recorded at the bottom of the well. The water was low in tritium but unexpectedly high in carbon-14 when compared with the surrounding ground water (sampled as cose as approx. 1609 km (1 mile) away). Mass balance calculations involving carbon and its isotopes are consistent with a model proposing that 13 percent of recharge is from sea water. During continuous flow tests, the total well yield was 83,400 lb of steam per hour, equivalent to approx. 150 gpm with 70 percent steam and the rest water. For most constituents measured, there was a one to three day …
Date: May 1, 1978
Creator: Kroopnick, P.M.; Buddemeier, R.W.; Thomas, D.; Lau, L.S. & Bills, D.
Object Type: Report
System: The UNT Digital Library
Investigation and Evaluation of Geopressured-Geothermal Wells; Detailed Reentry Prognosis for Geopressure-Geothermal Testing of Alice C. Plantation No. 2 Well (open access)

Investigation and Evaluation of Geopressured-Geothermal Wells; Detailed Reentry Prognosis for Geopressure-Geothermal Testing of Alice C. Plantation No. 2 Well

This Gruy Federal Type II-B, geopressured-geothermal (Geo) prospect was drilled as the Sun Oil Company, No. 2 Alice C. Plantation and is located in Section 2, Township 16-S, Range 10-E, St. mary Parish, Louisiana. The well site is 3,705.61 feet from U.S.C. and G.S. marker ''Foster''. The well site is located in a sugar cane field, and is accessible by approximately 2,500 feet of cane field road. The well was originally drilled to a depth of 19,000 feet and abandoned as a dry hole in December, 1963. The location is shown on the west central area of the USGS topographic sheet, 'North Bend'', Louisiana, in the Gruy Federal report, ''Investigation and Evaluation of Geopressured-Geothermal Wells, prospective Test Wells in the Texas and Louisiana Gulf Coast'', March 20, 1978.
Date: May 1, 1978
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Formerly utilized MED/AEC sites remedial action program: radiological survey of the former Linde Uranium Refinery, Tonawanda, New York. Final report (open access)

Formerly utilized MED/AEC sites remedial action program: radiological survey of the former Linde Uranium Refinery, Tonawanda, New York. Final report

The results of a radiological survey of the Linde Air Products Division of Union Carbide Corporation, Tonawanda, New York, are presented. During the period 1940 to 1948, this site was used for the separation of UO/sub 2/ from uranium ores and for the conversion of UO/sub 2/ to UF/sub 4/. Five buildings were involved in these operations. The survey included measurements of the following: residual alpha and beta-gamma contamination levels in these buildings; external gamma radiation levels at one meter above the surface in these buildings and outdoors throughout the Linde property; radon and radon daughter concentrations in the air in these buildings; uranium, radium, actinium, and thorium concentrations in soil samples taken both onsite and offsite; contamination in surface water on and near the site; and airborne concentrations of uranium, radium, and thorium in the building in which the separation process was carried out. Elevated concentrations of uranium, radium, and/or actinium were found in two of the buildings and outdoors in widely separated areas of the site. Alpha and beta-gamma contamination levels in some areas of the buildings were above limits set by current federal guidelines concerning the release of property for unrestricted use. Elevated external gamma radiation levels …
Date: May 1, 1978
Creator: Leggett, R. W.; Cottrell, W. D.; Burden, J. & Ryan, M. T.
Object Type: Report
System: The UNT Digital Library
26 - LMFBR flexible pipe joint development (open access)

26 - LMFBR flexible pipe joint development

Objective is the qualification of a PLBR-size primary loop flexible piping joint to the ASME Band PVC rules. Progress and activities are reported for: Class 1 flexible joint code approval support, engineering and design, material development, component testing, and manufacturing development. (DLC)
Date: May 1, 1978
Creator: Anderson, R.V.
Object Type: Report
System: The UNT Digital Library
Conceptual design considerations and neutronics of lithium fall laser fusion target chambers (open access)

Conceptual design considerations and neutronics of lithium fall laser fusion target chambers

Atomics International and Lawrence Livermore Laboratory are involved in the conceptual design of a laser fusion power plant incorporating the lithium fall target chamber. In this paper we discuss some of the more important design considerations for the target chamber and evaluate its nuclear performance. Sizing and configuration of the fall, hydraulic effects, and mechanical design considerations are addressed. The nuclear aspects examined include tritium breeding, energy deposition, and radiation damage.
Date: May 31, 1978
Creator: Meier, W. R. & Thomson, W. B.
Object Type: Article
System: The UNT Digital Library
Ocean thermal energy conversion (OTEC) power system development utilizing advanced, high-performance heat transfer techniques. Volume 1. Conceptual design report (open access)

Ocean thermal energy conversion (OTEC) power system development utilizing advanced, high-performance heat transfer techniques. Volume 1. Conceptual design report

The objective of this project is the development of a preliminary design for a full-sized, closed cycle, ammonia power system module for the 100 MWe OTEC Demonstration Plant. In turn, this Demonstration Plant is to demonstrate, by 1984, the operation and performance of an ocean thermal power plant having sufficiently advanced heat exchanger design to project economic viability for commercial utilization in the late 1980's and beyond. Included in this power system development are the preliminary designs for a proof-of-concept pilot plant and test article heat exchangers which are scaled in such a manner as to support a logically sequential, relatively low-cost development of the full-scale power system module. The conceptual designs are presented for the Demonstration Plant power module, the proof-of-concept pilot plant, and for a pair of test article heat exchangers. Costs associated with the design, development, fabrication, checkout, delivery, installation, and operation are included. The accompanying design and producibility studies on the full-scale power system module project the performance/economics for the commercial plant. This section of the report describes the full-size power system module, and summarizes the design parameters and associated costs for the Demonstration Plant module (prototype) and projects costs for commercial plants in production. The …
Date: May 12, 1978
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Sixth quarterly progress report, December 29, 1977-March 29, 1978 (open access)

Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Sixth quarterly progress report, December 29, 1977-March 29, 1978

Objectives are to assess the feasibility of macro-encapsulated PCM's for residential solar systems and to develop and evaluate such materials. Encapuslant materials under consideration are multilayer flexible plastic films, steel cans, and plastic bottls. Studies of the storage capability of CaCl/sub 2/ 6H/sub 2/O encapsulated in polyethylene bottles and Mg(NO/sub 3/)/sub 2/6H/sub 2/O/NH/sub 4/NO/sub 3/ eutectic, encapsulated in flexible plastic film packages.
Date: May 1, 1978
Creator: Lane, G. A.; Warner, G. L.; Hartwick, P. B. & Rossow, H. E.
Object Type: Report
System: The UNT Digital Library
Pennies a day: financing early deployment of photovoltaic utility applications through a user subsidy (open access)

Pennies a day: financing early deployment of photovoltaic utility applications through a user subsidy

Calculations indicate that the benefits of photovoltaic generation are unlikely to be soon realized unless the photovoltaic alternative is supported, as other energy technologies have been, by some sort of economic subsidy. This report describes the results of a preliminary investigation of one way of providing the required subsidy: simply allowing the utility company to recover the additional cost of photovoltaic generation through increases in charges to customers. As is shown, a very substantial early penetration of photovoltaic generation capacity into the generation mix of a utility system could be financed by quite modest increases in the annual electric bills of consumers. The analysis procedure used assumes a photovoltaic plant deployment rate and computes the total additional cost of electricity generation that would result from the deployment of the photovoltaic plants rather than of equivalent fossil-fuel plants. This additional annual cost is then apportioned, on a per kWh basis, among all utility customers, and the impact on the average residential customer's electric bill is determined.
Date: May 1, 1978
Creator: Siegel, B.
Object Type: Report
System: The UNT Digital Library
Overview of photovoltaic market studies (open access)

Overview of photovoltaic market studies

A summary of the results of recent studies sponsored by DOE and dealing with potential photovoltaic terrestrial solar energy systems markets is presented. Quantitative data developed by these studies are summarized to assist in planning test and applications programs and in estimating the level of photovoltaic system production capacity required to meet future market needs. Near-term (1976-1985) and mid-term (1986-2000) markets are discussed.
Date: May 1, 1978
Creator: Rattin, E. J.
Object Type: Report
System: The UNT Digital Library
Solar energy conversion: an analysis of impacts on desert ecosystems. Final report, June 1, 1977-December 31, 1977 (open access)

Solar energy conversion: an analysis of impacts on desert ecosystems. Final report, June 1, 1977-December 31, 1977

A research program is proposed to determine the response of desert ecosystems to the operation of various solar conversion systems. Existing solar powered irrigation pumping systems are described, as well as the 5 MW solar thermal test system at Albuquerque, the proposed 10 MW central receiver system at Barstow, and photovoltaic solar dispersed power systems. The theoretical ecological impacts of solar conversion system are described. Three major impact categories are discussed in detail: shading, wind deflection, and physical disturbance. Research needs necessary to evaluate biotic and abiotic changes in the desert ecosystem are delineated, and specific monitoring and manipulation programs for existing and proposed solar conversion sites are proposed.
Date: May 1, 1978
Creator: Patten, D.C.
Object Type: Report
System: The UNT Digital Library
Pacific Gas and Electric Company preliminary staff review, Geysers Unit 16 (open access)

Pacific Gas and Electric Company preliminary staff review, Geysers Unit 16

The existing documentation on the Geysers Unit 16 and Geysers to Lakeville transmission line projects is reviewed and data deficiencies and areas requiring clarification for filing a Notice of Intention on these projects are identified. (MHR)
Date: May 2, 1978
Creator: unknown
Object Type: Book
System: The UNT Digital Library
Impact of the proposed Atikokan electric generating facility on the wet deposition of sulfur in the Boundary Waters Canoe Area (open access)

Impact of the proposed Atikokan electric generating facility on the wet deposition of sulfur in the Boundary Waters Canoe Area

The major impact of the Atikokan Power Plant on the Boundary Waters Canoe Area (BWCA) during precipitation will be related to the increased deposition of acidic sulfate which has been transformed during transit from the SO/sub 2/ source at Atikokan. The BWCA faces an equally serious impact due to the increased washout of SO/sub 2/ which, once in the surface waters, is likely to convert to an acidic sulfate. Both experimental data and theoretical models suggest that the wet deposition of sulfate from Atikokan will be seasonally dependent and will be related to features such as storm type, precipitation rate and concentration of sulfate being drawn into the storms. The concentration of SO/sub 4/ being drawn into the storms is dependent upon the rate of SO/sub 2/ conversion to sulfate during the transit from the source. Approximately 6 h will be required for emissions from Atikokan to reach the BWCA. During this time 10% or more of the SO/sub 2/ can be converted to SO/sub 4/. The highest wet deposition of sulfate is expected in the summer when summertime convective showers can remove 20 to 30 times the sulfate mass removed by wintertime snowstorms with the same precipitation intensity and …
Date: May 1, 1978
Creator: Scott, B. C.
Object Type: Report
System: The UNT Digital Library
Cyclotron Laboratory Experimental Nuclear Science Program, June 1, 1976--June 30, 1977. [Summaries of research activities at Univ. of Maryland] (open access)

Cyclotron Laboratory Experimental Nuclear Science Program, June 1, 1976--June 30, 1977. [Summaries of research activities at Univ. of Maryland]

Experimental research on nuclear reactions is summarized. A list of publications is included. (JFP)
Date: May 1, 1978
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Determination of bulk diffusion lengths for angle-lapped semiconductor material via the scanning electron microscope: a theoretical analysis (open access)

Determination of bulk diffusion lengths for angle-lapped semiconductor material via the scanning electron microscope: a theoretical analysis

A standard procedure for the determintion of the minority carrier diffusion length by means of a scanning electron microscope (SEM) consists in scanning across an angle-lapped surface of a P--N junction and measuring the resultant short circuit current I/sub sc/ as a function of beam position. A detailed analysis of the I/sub sc/ originating from this configuration is presented. It is found that, for a point source excitation, the I/sub sc/ depends very simply on x, the variable distance between the surfce and the junction edge. The expression for the I/sub sc/ of a planar junction device is well known. If d, the constant distance between the plane of the surface of the semiconductor and the junction edge in the expression for the I/sub sc/ of a planar junction is merely replaced by x, the variable distance of the corresponding angle-lapped junction, an expression results which is correct to within a small fraction of a percent as long as the angle between the surfaces, 2 theta/sub 1/, is amaller than 10/sup 0/.
Date: May 31, 1978
Creator: von Roos, O.
Object Type: Report
System: The UNT Digital Library
Reactor coolant pumps generator and flywheel seismic analysis (open access)

Reactor coolant pumps generator and flywheel seismic analysis

The LOFT Primary System Motor Generator Set was analyzed for sliding and overturning during a seismic event. The assembly is located in TAN 650, Room B239, and is satisfactory against seismic loading.
Date: May 12, 1978
Creator: Singh, J. N. & Kuehster, C. J.
Object Type: Report
System: The UNT Digital Library
Evaluation of the feasibility, economic impact, and effectiveness of underground nuclear power plants. Final technical report (open access)

Evaluation of the feasibility, economic impact, and effectiveness of underground nuclear power plants. Final technical report

Information on underground nuclear power plants is presented concerning underground nuclear power plant concepts; public health impacts; technical feasibility of underground concepts; economic impacts of underground construction; and evaluation of related issues.
Date: May 1, 1978
Creator: unknown
Object Type: Report
System: The UNT Digital Library