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Design of a System using CPC Collectors to Collect Solar Energy and to Produce Industrial Process Steam

Description: A system has been designed to use CPC collectors to collect solar energy and to generate steam for industrial process heat purposes. The system is divided into two loops with the collectors in the collector loop to operate a pre-heater and the collectors in the boiler loop to heat water to elevated pressures and temperatures. A flash boiler is used to throttle the heated water to steam. Two types of CPC collectors are chosen. In the collector loop the CPC collectors are fitted with concentric t… more
Date: August 1979
Creator: Argonne National Laboratory. Solar Energy Group.
Item Type: Refine your search to only Report
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Design of a Tunable High-Q Superconducting Notch Filter

Description: The design of a tunable high-Q superconducting notch filter is presented. The filter is designed to be manufactured from high Tc superconductors (Nb3S, Nb3Ge) made by high-rate magnetron sputtering on sapphire substrates. The geometry of the various elements, holder materials for the cryostat, studies relating to the preparation of suitable high Tc materials, and the photo-etching procedures for the filter elements are discussed.
Date: October 1978
Creator: Falco, Charles M.; Kampwirth, R. T.; Pang, C. S. & Schuller, Ivan K.
Item Type: Refine your search to only Report
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Development and Demonstration of Compound Parabolic Concentrators for Solar Thermal Power Generation and Heating and Cooling Applications, Progress Report: July-December 1975

Description: Progress report describing the development of Compound Parabolic Concentrators (CPC). A tenfold concentrator with a cavity receiver was constructed and tested. The optical efficiency was very good (65 percent), but the thermal performance was degraded by heat losses of the cavity receiver. A summary of the results of subcontracts described in the previous progress report are presented, and the influence of these results on ANL programs is noted.
Date: 1977
Creator: Allen, John W.; Levitz, Norman M.; Rabl, Ari; Reed, Kent A.; Schertz, William W.; Thodos, George et al.
Item Type: Refine your search to only Report
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Development of a MK-II Loop to Simulate Reactor Hydraulic Conditions

Description: The Mk-IIC Integral Loop was modified to provide an in-pile experimental apparatus that would simulate the subassembly coolant flow rate and inlet pressure head of the Fast Test Reactor (FTR). There were two main design changes. First, the safety dump tanks were removed from the Mk-IIC loop and replaced by a second annular linear induction pump (ALIP). Second, a flow restricting orifice was sized so that the hydraulic requirements of prototypical test-section coolant velocity and pressure head … more
Date: January 1979
Creator: Page, R. J. & Robinson, L. E.
Item Type: Refine your search to only Report
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Di-n-Amyl-n-Amylphosphonate and Tricaprylmethylammonium Nitrate as Potential Extractants for Reprocessing Th-U Fuels

Description: Both 2F di-n-amyl-n-amylphosphonate in n-dodecane (DA(AP)-DD) and 0.77F tricaprylmethylammonium nitrate in Aromatic 100 (TCMA.NO/sub 3/-AR100) extract uranium and thorium into relatively concentrated organic solutions. Countercurrent-flow tests with each extractant have demonstrated effective uranium-thorium separations by selective stripping from the organic phase. Both extractants offer advantageous alternatives to tributylphosphate (Thorex) in reprocessing irradiated mixed ThO2-UO2 fuels. Fo… more
Date: September 1979
Creator: Diamond, H.
Item Type: Refine your search to only Report
open access

DISPL: a Software Package for One and Two Spatially Dimensioned Kinetics-Diffusion Problems

Description: DISPL is a software package for solving some second-order nonlinear systems of partial differential equations including parabolic, elliptic, hyperbolic, and some mixed types such as parabolic-elliptic equations. Fairly general nonlinear boundary conditions are allowed as well as interface conditions for problems in an inhomogeneous media. The spatial domain is one- or two-dimensional with Cartesian, cylindrical, or spherical (in one dimension only) geometry. The numerical method is based on the… more
Date: November 1978
Creator: Leaf, G. K.; Minkoff, M.; Byrne, G. D.; Sorensen, D.; Bleakney, T. & Saltzman, J.
Item Type: Refine your search to only Report
open access

Disposal of Radioactive Sodium Waste

Description: Operation of liquid-metal-cooled fast breeder reactors (LMFBRs) will result in production of various quantities of radioactive sodium waste. Two methods have been developed and tested on a small scale for converting this sodium waste to inert compounds suitable for disposal. The first method is direct oxidation of the sodium after dispersal in a silica matrix. The sodium is mixed with silica and oxidized in a rotary drum reactor. The product is suitable for making glass when other stabilizing c… more
Date: September 1978
Creator: McPheeters, C. C. & Wolson, R. D.
Item Type: Refine your search to only Report
open access

Domain and Surface Structures of Sodium Tungsten Bronzes, NaxWO₃ (0.4 [x [1)

Description: 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 t… more
Date: September 1978
Creator: Atoji, Masao
Item Type: Refine your search to only Report
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The Dynamic Response of Cracked Hexagonal Subassembly Ducts

Description: This report examines the dynamic elastic response of flawed and unflawed reactor subassembly ducts. A plane- strain finite-element analysis is presented for hexagonal ducts containing either internal corner cracks or external midflat cracks. Two geometric loading conditions are considered: uniform internal pressurization and point loads applied at opposite midflats. The time dependence of these loads was chosen as a Heaviside step function for the worst-case situation and as a triangular pulse … more
Date: April 1979
Creator: Glazik, J. L. & Petroski, H. J.
Item Type: Refine your search to only Report
open access

EBR-2 Fisson-Product-Source Test No. 1

Description: A fission-product source (FPS) was irradiated in EBR-II to provide data for calibrating the facility's fuel-element rupture detector (FERD), which is a delayed-neutron monitor, and germanium-lithium argon-scanning system (GLASS), a fission-gas-activity monitor. A metal alloy source, Ni-3.2 wt.% uranium, provided quantitative recoil release of the fission-product nuclides. The source alloy, in tubular form, was irradiated as core-region segments of 18 capsules in the FPS subassembly. The irradia… more
Date: August 1978
Creator: Strain, R. V.; Fogle, G. L.; Thresh, H. R.; Heinrich, R. R.; Freyer, R. M.; So, B. Y. C. et al.
Item Type: Refine your search to only Report
open access

EBR-II Environmental Instrumented Subassembly XX08 : Engineering and Assembly

Description: Subassembly XX08 is a fueled and instrumented subassembly designed primarily for an ongoing program to investigate the thermal-hydraulic core environment within EBR-II under normal and off-normal plant operating conditions. XX08 contains 58-xenon-tagged, EBR-II Mark-II driver-fuel elements. The Mark-II fuel is expected to provide XX08 with an irradiation lifetime three times as great as that attained with its predecessor, XX07, i.e., a 9 versus 2.9% burnup. A burnup of 9 at.% is equivalent to a… more
Date: May 1978
Creator: Smaardyk, A.; Filewicz, E. C.; Longnecker, A. A.; Poloncsik, J.; Tokar, J. V.; Walker, D. E. et al.
Item Type: Refine your search to only Report
open access

An Econometric Model of Intraurban Location of Emitters and Receptors of Industrial Air Pollution

Description: An econometric model of air pollution for an intraurban location (the Chicago area) is constructed and estimated. The model treats employment and population as simultaneously determined. Exogenous variables are selected to represent transportation infrastructure investments resulting primarily from federal and state decisions. The exogenous variables account for the relative services provided by highways, commuter railroads, rail rapid transit, waterways, and airports. The employment location e… more
Date: February 1977
Creator: Santini, Danilo J. & Braid, R.
Item Type: Refine your search to only Report
open access

Effects of Cyclic Stains on Transport Properties of a Superconducting Composite : Phase I, Degradation of Electrical Conductivity in Copper at 4.2 K

Description: The effects of cyclic strains at 4.2 K on the electrical resistivity of copper have been investigated as Phase I of a program to determine the overall effects on monolithic superconducting composites. This work is a direct application to the design of large superconducting magnets that are subject to several different modes of cyclic strain during assembly and normal operations.
Date: August 1977
Creator: Fisher, E. S.; Kim, S. H.; Linz, R. J. & Turner, A. P. L.
Item Type: Refine your search to only Report
open access

Effects of Environment on the Low-Cycle Fatigue Behavior of Type 304 Stainless Steel

Description: The low-cycle fatigue behavior of Type 304 stainless steel has been investigated at 593 degrees C in a dynamic vacuum of better than 1.3 x 10⁻⁶ Pa (10⁻⁸ torr). The results concerning the effects of strain range, strain rate and tensile hold time on fatigue life are presented and compared with results of similar tests performed in air and sodium environments. Under continuous symmetrical cycling, fatigue life is significantly longer in vacuum than in air; in the low strain range regime, the effe… more
Date: December 1979
Creator: Argonne National Laboratory. Materials Science Division.
Item Type: Refine your search to only Report
open access

Effects of Possible Compression Loading of EBR-II Subassemblies Due to Irradiation-Induced Swelling and Changes in Reactor Environment

Description: A condition of compression loading could possibly occur to a subassembly as a result of large length changes to irradiation-induced swelling and thermal expansion. The effects of axial compression loading on EBR-II experimental and driver-fuel subassemblies were evaluated. Compression tests that were performed on the slotted top fixture of a subassembly showed that a force of 2100 lb at 900 degrees F would close the slot enough so that the core-gripper blade would not fit into the slot. Such a … more
Date: August 1975
Creator: Longua, K. J.; Flinn, J. E.; Koenig, J. F. & Walters, L. C.
Item Type: Refine your search to only Report
open access

Efficacy of the EBR-II FERD System as an Automatic Trip Device

Description: This report discusses the effectiveness of the EBR-II fuel-element-rupture-detector (FERD) system which detects delayed-neutron-emitting fission products. It is demonstrated that FERD provides no reactor or public protection for loss-of-flow or transient-overpower fault events that affect the whole core; such protection is provided by other systems.
Date: August 1977
Creator: Fryer, R. M.; Dean, E. M.; Lambert, J. D. B. & Reyes, L. A.
Item Type: Refine your search to only Report
open access

Efficient Numerical Scheme Based on the Method of Characteristics Applicable to Two-Dimensional Fluid Transients

Description: Two-step explicit numerical procedures based on the method of characteristics are presented. These procedures use four bicharacteristics equally spaced on the Mach cone. The velocity components are first obtained for the entire field by use of known initial data. Pressure is calculated in the second step in which the advanced velocity data are used. Nowhere in these procedures is an iterative scheme required. A linearized set of hyperbolic differential equations describing two-dimensional trans… more
Date: December 1977
Creator: Valentin, Richard A.
Item Type: Refine your search to only Report
open access

Energy Level Structure and Transition Probabilities in the Spectra of the Trivalent Lanthanides in LaF₃

Description: Two types of correlations with experimental results are reported. For even-f-electron systems, a center of gravity was computed based on the energies of the observed states, and calculated optimized sets of atomic energy level parameters. For odd-electron systems complete crystal field calculations were performed in which parameters of both the atomic and crystal-field parts of the interaction were adjusted to experimental data. The result is a set of eigenvectors for all the ionic states in ea… more
Date: 1978
Creator: Carnall, W. T.; Crosswhite, H. M. & Crosswhite, H. M.
Item Type: Refine your search to only Report
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