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UNT Libraries Government Documents Department
2,086
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853
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402
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41
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31
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28
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27
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22
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21
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15
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Collection
Office of Scientific & Technical Information Technical Reports
2,013
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609
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449
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329
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263
Tocker Foundation Grant
209
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62
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44
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38
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States
Year
Month
California solar data manual
Factors that determined the data contents of the manual are presented. Estimates of errors in the data are provided, and the impact of these errors on solar design is discussed. The state is divided into 15 solar zones of roughly similar solar radiation conditions, which are illustrated along with page references to the most relevant solar and climate data. A guide to the data tables and graphs is provided, which are displayed under solar, climate, and sky charts. A guide is given to simplified design methods to predict performance and cost of solar heating and cooling systems. (MHR)
Date:
January 1, 1978
Creator:
Berdahl, P.; Grether, D.; Martin, M. & Wahlig, M.
Object Type:
Report
System:
The UNT Digital Library
Industrial Low Btu Fuel Gas Demonstration Plant Program: Phase I. Quarterly and annual report, 19 September 1977-31 December 1977
A major problem which arose during the reporting period was that of the completion of the required environmental analysis in order not to impact Phase II of the program. This problem was addressed and a proposed solution was agreed to. A sole source procurement justification for Energy Impact Associates was prepared and submitted to DOE for approval. This sole source procurement will enable construction start as scheduled (8 months after start of Phase II) whereas a competitive procurement of this item would have delayed that start by 6 months and with an additional inflationary cost to the program in excess of $5,000,000. The design work on the Commercial Plant is proceeding essentially on schedule. No major problems are foreseen. A major problem to be faced in 1978 is the achievement of successful operating data from the pilot plant necessary to confirm a demonstration plant design. This data must be obtained at a pressure of 3 atmospheres and requires additional modifications to the existing plant as described in IGT's Interface Plan submitted in January.
Date:
January 1, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Liquid waste handling facilities for a conceptual LWR spent fuel reprocessing complex
The waste evaporator systems and the methods for evaporating the liquid wastes of various radioactivity levels are discussed. After the liquid wastes are evaporated and nitric acid is recovered the high-level liquid waste is incorporated into borosilicate glass and the intermediate-level liquid waste into concrete for final disposal. (LK)
Date:
January 1, 1978
Creator:
Witt, D.C. & Bradley, R.F.
Object Type:
Article
System:
The UNT Digital Library
Fabrication of a 180/sup 0/ electron scattering facility. Final report, January 2, 1975--January 1, 1978
A system of four dipole magnets to be used for 180/sup 0/ electron scattering studies at the 400 MeV William F. Bates Electron Linear Accelerator of Middleton, Massachusetts was constructed and tested. The first three magnets through which the incident beam passes have similar pole shapes and serve only as beam transport elements. The fourth magnet directs the incident beam onto a target, and also receives and deflects the backscattered electrons into a large magnetic spectrometer operating in an energy-loss mode. The system may be used for both elastic and inelastic electron scattering without moving the spectrometer. The incident beam and the post-target beam travel along the same line. Tests show that a constant solid angle is maintained for scattering regardless of the energy loss suffered by the electron in the target. A resolution inherent to the system of less than 2.5 x 10/sup -4/ was found.
Date:
January 1, 1978
Creator:
Peterson, G A
Object Type:
Report
System:
The UNT Digital Library
Fiber optics and microprocessors: a control-system solution for the laser-fusion environment
The use of fiber optics and microprocessors in a distributed computer control system for a 100-kJ CO/sub 2/ laser fusion facility is described. Gas-laser control systems must operate in an environment in which megavolt Marx circuits generate megampere discharges in the laser amplifiers, with attendant high electromagnetic fields. By linking the distributed controls with fiber optics the adverse effect of these fields on the hard-wired controls is mimimized, and the additional advantage of ground isolation gained. Fiber-optic subsystems and interfaces include low-error-rate digital communication links between computers; nanosecond timing and trigger links; fiber-optic parameter monitors with dc-to-10 MHz bandwidths; binary fiber-optic power control for valves, motors, and contactors; and binary fiber-optic status interfaces to monitor the system response to control outputs.
Date:
January 1, 1978
Creator:
Thuot, M.E.
Object Type:
Article
System:
The UNT Digital Library
Kinetics of the radiation-induced exchange reactions of H/sub 2/, D/sub 2/, and T/sub 2/: a review
Mixtures of H/sub 2/--T/sub 2/ or D/sub 2/--T/sub 2/ will exchange to produce HT or DT due to catalysis by the tritium ..beta.. particle. The kinetics of the reaction D/sub 2/ + T/sub 2/ = 2DT may play an important role in designing liquid or solid targets of D/sub 2/--DT--T/sub 2/ for implosion fusion, and distillation schemes for tritium cleanup systems in fusion reactors. Accordingly, we have critically reviewed the literature for information on the kinetics and mechanism of radiation-induced self-exchange reactions among the hydrogens. We found data for the reaction H/sub 2/ + T/sub 2/ = 2HT in the gas phase and developed a scheme based on these data to predict the halftime to equilibrium for any gaseous H/sub 2/ + T/sub 2/ mixture at ambient temperature with an accuracy of +-10 percent. The overall order of the H/sub 2/ + T/sub 2/ = 2HT reaction is 1.6 based on an initial rate treatment of the data. The most probable mechanism for radiation-induced self-exchange reaction is an ion-molecule chain mechanism.
Date:
January 6, 1978
Creator:
Pyper, J.W. & Briggs, C.K.
Object Type:
Report
System:
The UNT Digital Library
Introduction to albedo neutron dosimeters
The design, operation, calibration, and performance of albedo neutron dosimeters are discussed. An albedo neutron dosimeter is designed to measure the flux of thermal neutrons which leave the body when a person is exposed to fast energy neutrons. The fast neutrons are scattered and moderated in the body, and many have lost most of their initial energy and emerge as thermal neutrons. The albedo neutron dosimeter is designed to detect this flux of thermal neutrons by using a thermal neutron detector. This could be any type of thermal neutron detector but in practical applications lithium fluoride (LiF) thermoluminescence dosimeters (TLDs) are most frequently used. Various types of albedo neutron dosimeters are described. (WHK)
Date:
January 16, 1978
Creator:
Hankins, D.E.
Object Type:
Article
System:
The UNT Digital Library
Tapered fluidized-bed bioreactor: an improved device for continuous cultivation
The bioreactor concept utilizing a tapered fluidized bed has shown considerable promise for use in bioprocesses where the biological agents can be immobilized on a fluidizable solid phase, but the operating characteristics of such a reactor are not yet fully understood. A simple mathematical model (steady state, plug flow conditions) has been developed and tested with experimental data, and calculated values compare favorably with experimental values. A more complete and presumably more valid mathematical model incorporating void volume changes and particle size distribution is being developed.
Date:
January 1, 1978
Creator:
Pitt, Jr., W. W.; Hancher, C. W.; Scott, C. D. & Hsu, H. W.
Object Type:
Article
System:
The UNT Digital Library
Development and testing of shingle-type solar cell modules. Quarterly report No. 2
The details of a shingle module design which produces in excess of 97 watts/m/sup 2/ of module area at 1 kW/m/sup 2/ insolation and at 60/sup 0/C are reported. This selected design employs a tempered glass coverplate to provide the primary solar cell structural support. The use of the B.F. Goodrich FLEXSEAL roofing system as the outer skin of the shingle substrate provides a high confidence of achieving the 15 year service life goal. The fabrication and testing of a preproduction module of this design has demonstrated that this selected approach will meet the environmental testing requirements imposed by the contract. Attempts to fabricate a preproduction module of an alternative design, which embeds the solar cell assembly within a methyl methacrylate casting, proved unsuccessful.
Date:
January 5, 1978
Creator:
Shepard, N.F.
Object Type:
Report
System:
The UNT Digital Library
Ultrasonic inspection techniques for two weld closures proposed for RSSF waste storage casks
One method being considered for interim storage of high-level radioactive waste materials is to place these materials in large sealed stainless steel canisters and subsequently store these canisters in a second sealed steel storage cask. Weld procedures are proposed as the closure or seal for these vessels. Inspection of these closures to assure initial and long-term integrity of the closure welds presents a challenge to nondestructive testing. The environment is thermally (400 to 1000/sup 0/F) and radioactively (10/sup 5/ R/hr) hot necessitating remote inspection procedures. As a result of research work, ultrasonic test techniques were developed for inspecting the final weld closure of the waste cask. Special transducers, coupling techniques and fixturing were developed and demonstrated in a mockup test facility by remotely examining a 2-in. full penetration weld closure. The examination was performed at room ambient and at a temperature of 200/sup 0/F. Testing at the desired temperature of 400/sup 0/F was not completed due to a loss in transducer performance at temperatures in excess of 200/sup 0/F. Upon completion of the mockup test demonstration, the cask was subjected to a drop test. The ultrasonic results of the pre- and post-examination of two weld closures (the 2-in. full penetration …
Date:
January 1, 1978
Creator:
Doctor, S. R. & Morris, C. J.
Object Type:
Report
System:
The UNT Digital Library
Current control by a homopolar machine with moving brushes
The equation for TNS Doublet's E-coil circuit with moving brush homopolar machine is integrated in the flux of the homopolar for a monotonically increasing current function extending beyond the current reversal into the burn period. The results show that the moving brush feature is not useful for controlling the burn.
Date:
January 1, 1978
Creator:
Vogel, H.
Object Type:
Report
System:
The UNT Digital Library
Scope of Work for Evaluating the Mechanical Performance of EPR First Wall Coatings
An outline is presented for a proposed scope of work to evaluate the mechanical performance of candidate first wall coatings for a Tokamak-type fusion reactor. The goal of the overall program is to provide an adequate coating material and recoating process which can be manufactured by currently available vendors.
Date:
January 1, 1978
Creator:
Jones, W. B. & Van den Avyle, J. A.
Object Type:
Report
System:
The UNT Digital Library
Electron-beam fusion welding of beryllium
Ingot-sheet beryllium (Be) having three different chemistries and three different thicknesses was fusion-welded by the electron-beam process. Several different preheats were used to obtain 100% penetration and crack-free welds. Cracking susceptability was found to be related to aluminum (Al) content; the higher Al-content material was most susceptable. However, adequate preheat allowed full penetration and crack-free welds to be made in all materials tested. The effect of a post-weld heat treatment on the mechanical properties of these compositions was also determined. The heat treatment produced no significant effect on the ultimate tensile strength. However, the yield strength was decreased and the ductility was increased. These changes are attributed to the formation of AlFeBe/sub 4/ and FeBe/sub 11/.
Date:
January 1, 1978
Creator:
Campbell, R. P.; Dixon, R. D. & Liby, A. L.
Object Type:
Report
System:
The UNT Digital Library
Simple empirical method for estimating the performance of a passive solar heated building of the thermal storage wall type
Two methods are presented for estimating the annual solar heating performance of a building utilizing a passive thermal storage wall of the Trombe wall or water wall type with or without night insulation and with or without a reflector. The method is accurate to +-3% as compared with hour-by-hour computer simulations.
Date:
January 1, 1978
Creator:
Balcomb, J.D. & McFarland, R.D.
Object Type:
Article
System:
The UNT Digital Library
Preliminary report. Preliminary findings and views concerning the exemption of aviation gasoline from the Mandatory Petroleum Allocation and Price Regulations
Preliminary findings indicate that: the fuel is not in short supply; exemption will not have an adverse impact on supply of any other petroleum product subject to the Emergency Petroleum allocation Act of 1973; competition and market force are adequate; exemption will not result in inequitable prices; and exemption will not have adverse state or regional impacts or any other adverse impacts. Chapter II provides background information on the use, production, and distribution of aviation gasoline. Chapter III analyzes the historical interaction of supply, demand, and price, and explores the market structure for aviation gasoline during 1968 to 1976, prior to and during imposition of allocation and price controls. Chapter IV examines aviation gasoline supply, demand, price, and market structure impacts of exempting aviation gasoline from controls. In Chapter V, the potential economic impacts of exemption are evaluated. Chapter VI provides a final summary of the DOE's findings and views in support of its preliminary judgment that aviation gasoline should be exempted from allocation and price regulations. (MCW)
Date:
January 1, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Investigation of cooling coil corrosion in storage tanks for radioactive waste
The high frequency of cooling coil leaks observed in high-heat waste storage tanks soon after sludge removal operations is attributed to pitting, according to laboratory corrosion studies. Experiments show that the most likely series of events leading to coil leakage is (1) excessive dilution of basic nitrite in the supernate, (2) initiation of attack in crevices due to oxygen depletion cells, and (3) acceleration of the attack by sulfate dissolved from the sludge. When sludge was slurried with water, the interstitial liquid was diluted. Nitrite, the anodic inhibitor that prevented attack on coils and tanks in normal operation when its concentration was 0.5 to 3.0M, could accelerate attack when diluted to 10/sup -4/ to 10/sup -3/M. Attack was presumably initiated at oxygen depletion cells. The presence of sulfate, leached from the sludge, produced a conductive solution that could produce high current densities at the corroding steel surface. The proposed series of events leading to coil leakage agrees with the observations previously made on one leaking coil removed from Tank 2F after sludge removal in 1967. Examination revealed pitting that had originated on the outside of the coils. This pitting was attributed to oxygen depletion cells in coil crevices. To prevent …
Date:
January 1, 1978
Creator:
Ondrejcin, R.S.
Object Type:
Article
System:
The UNT Digital Library
Impacts of the national energy programme on solar economics
The National Energy Plan (NEP) sets as a goal the use of solar energy in two and a half million homes in 1985. A key provision of the NEP (as well as congressional alternatives) provides for the subsidization of solar equipment. The extent to which these subsidies (income tax credits) might offset the impact of continued energy-price control is examined. Regional prices and availability of conventional energy sources (oil, gas, and electricity) were compiled to obtain a current and consistent set of energy prices by state and energy type. These prices are converted into equivalent terms ($/10/sup 6/ Btu) that account for combustion and heat-generation efficiencies. Projections of conventional-fuel price increases (or decreases) are made under both the NEP scenario and a projected scenario where all wellhead price controls are removed on natural gas and crude oil production. The economic feasibility (life-cycle cost basis) of solar energy for residential space heating and domestic hot water is examined on a state-by-state basis. Solar-system costs are developed for each state by fraction of Btu heating load provided. The total number of homes, projected energy savings, and sensitivity to heating loads, alternative energy costs, and prices are included in the analysis.
Date:
January 1, 1978
Creator:
Ben-David, S.; Noll, S.; Roach, F. & Schulze, W.
Object Type:
Article
System:
The UNT Digital Library
Preliminary economic evaluation of a process for the production of fuel grade ethanol by enzymatic hydrolysis of an agricultural waste
This study concerns the preliminary economic feasibility of a process for converting agricultural waste (wheat straw) to fuel grade ethanol through enzymatic hydrolysis. A preliminary design for the process was developed on the basis of research concepts described in the literature. The base case design is for a 25 million gal/yr plant for 95 vol % ethanol from wheat straw. The preliminary design included material and energy balances and major equipment specifications and sizing, which in turn were used for estimating the required capital investment. Estimates of process operating costs and required selling prices were based on typical industrial conditions. The sensitivity of product ethanol cost to changes in key operating variables was determined in order to indicate where future process improvements are needed and more R and D effort is warranted. (JGB)
Date:
January 1, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
NO/sub 2/ levels in diesel exhaust
The safe operation of diesel-powered equipment in underground mines is predicated on there being sufficient ventilation to dilute the exhaust such that none of the toxicants in the dilute mixture exceed allowable levels. In order to determine the ventilation requirement for an engine, it is necessary to measure levels of the various toxicants in the exhaust. Measurements in the past typically either have excluded nitrogen dioxide or have not provided information on nitrogen dioxide specifically. Primarily this exclusion has resulted from lack of a fast, on-line analytical method. Development of the chemiluminescence analyzer appears now to provide the requisite capability; this instrument has been demonstrated to yield valid information for nitrogen dioxide levels and has been applied in a series of experiments conducted at the Department of Energy's Bartlesville (Okla.) Energy Research Center (BERC). Measurements of nitrogen dioxide in the exhaust from several diesel engines operated over wide ranges in speed and load were made as part of BERC's cooperative program with the U. S. Bureau of Mines. Results of these experiments indicate that nitrogen dioxide concentrations vary from less than 10% to approximately 30% of the total oxides of nitrogen. The nitrogen dioxide fraction was maximum at light load …
Date:
January 1, 1978
Creator:
Marshall, W.F.
Object Type:
Report
System:
The UNT Digital Library
RLPORINC: the RELAP4/MOD5 interface to ORINC
The Oak Ridge Inverse code, ORINC, calculates the temperature distribution in an electric core pin from internal temperatures and the conditions in the surrounding environment. While the internal temperatures can be obtained from thermocouples in the Thermal Hydraulic Test Facility, the needed environmental conditions cannot be determined as directly from experimental data. However, this information can be determined from a modified version of the Reactor Linearized Analysis Program, RELAP. In particular, the IBM form of RELAP/MOD5 UPDATE2, as released by the Idaho National Engineering Laboratory, was modified to save the proper information in a convenient format. This document describes this RELAP-to-ORINC interface version of RELAP4 which has been named RLPORINC.
Date:
January 10, 1978
Creator:
Cliff, S.B.
Object Type:
Report
System:
The UNT Digital Library
Analysis of a neutron scattering and gamma-ray production integral and experiment on silicon dioxide for neutron energies from 1 to 15 MeV
Monte Carlo calculations were made to analyze the results of an integral experiment with a sample of SiO/sub 2/ to determine the adequacy of ENDF/B-IV neutron scattering and gamma-ray production cross-section data for silicon and oxygen. The experimental results analyzed included energy-dependent NE-213 detector neutron and gamma-ray count rates at a scattering angle of 90 deg and pulse-height spectra for scattered neutrons and gamma rays. The experiments were carried out with the ORELA 1- to 20-MeV pulsed neutron source. The pulse-height data were unfolded to generate secondary neutron and gamma-ray spectra at 90 deg as a function of incident neutron energy. Multigroup Monte Carlo calculations using the MORSE code and ENDF/B-IV cross sections were made to analyze all reported results. No outstanding discrepancies between calculated and measured responses were found on the neutron data below 12 MeV. Possible discrepancies in the inelastic scattering data above 12 MeV are indicated. This is consistent with a previous analysis of an oxygen experiment. A more detailed analysis will have to be performed before any definite conclusions can be drawn from these comparisons.
Date:
January 1, 1978
Creator:
Cramer, S. N. & Oblow, E. M.
Object Type:
Report
System:
The UNT Digital Library
Germanium detector system for the detection of transuranics at low-activity concentrations in soil. [/sup 241/Am, /sup 240/Pu, /sup 239/Pu, /sup 238/U, /sup 232/Th]
A photon spectroscopy system is described which is designed for the detection of plutonium and /sup 241/Am in soil samples with a minimum turnaround time. Quantification is based upon the 60-keV gamma emitted in /sup 241/Am decay and upon the uranium L x-rays (energies from 13 to 22 keV) emitted by plutonium isotopes during alpha decay. The detector is a single-crystal, intrinsic-germanium-planar detector with a surface area of 21 cm/sup 2/. Sensitivity is increased by incorporating a detector window with a larger than normal surface area. This optimized window size was established by Monte Carlo calculations. For small, Petri-dish samples, detection limits at the 3 sigma level for a 4-hr counting time are better than 4 pCi/g for plutonium and better than 0.05 pCi/g for /sup 241/Am. The specifications, performance, and cost of the system are discussed.
Date:
January 1, 1978
Creator:
West, L.; Umbarger, C.J. & Dempsey, T.
Object Type:
Article
System:
The UNT Digital Library
Process for cleaning and removal of sulfur compounds from low Btu gases. Quarterly summary report, October--December 1977
Problems which occurred in the startup of the remodelled process development unit are described. The extraction section of the plant performed well with sulfur recoveries exceeding the design value of 95%. (LTN)
Date:
January 1, 1978
Creator:
Moore, R. H.; Ham, D. G.; Mitchell, D. H.; Robertus, R. J. & Stegen, G. E.
Object Type:
Report
System:
The UNT Digital Library
Geothermal environmental seminar-'78
Thirty-seven papers are included. Two were abstracted for EDB previously. Abstracts were prepared for the remaining thirty-five. (MHR)
Date:
January 1, 1978
Creator:
Tucker, F. L. & Tanner, L. R.
Object Type:
Article
System:
The UNT Digital Library