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1-MWE Heat Exchangers for OTEC Final Design Report

Description: The design of a 1 MWe OTEC heat exchanger is documented, including the designs of the evaporator and associated systems, condenser, instrumentation, and materials for corrosion/erosion control and fabrication processes. (LEW)
Date: June 19, 1980
Creator: Sprouse, A.M.
open access

3-D numerical analysis of a high-gain free-electron laser

Description: We present a novel approach to the 3-dimensional high-gain free- electron laser amplifier problem. The method allows us to write the laser field as an integral equation which can be efficiently and accurately evaluated on a small computer. The model is general enough to allow the inclusion of various initial electron beam distributions to study the gain reduction mechanism and its dependence on the physical parameters. 16 refs., 8 figs., 1 tab.
Date: October 19, 1988
Creator: Gallardo, J.C.
open access

Absolute measurement of neutron cross sections. Progress report

Description: The procedures and status of the absolute measurement of the neutron capture cross sections for /sup 115/In and /sup 232/Th are described. Work on the /sup 239/Pu fission fragment anisotropy and absolute measurement of the fast neutron fission cross section for /sup 233/U are briefly described. Progress in establishing the 14 MeV neutron measurements at the facility are discussed. (WHK)
Date: February 19, 1981
Creator: Knoll, G. F.
open access

Analysis of Rotary Bayonets and Piping

Description: This report quantifies certain characteristics of the rotary bayonets and associated platform piping on the DO detector. The Vacuum Jacketed 4-inch x 6-inch and 1.5-inch x 3-inch and the 4-inch and 6-inch vacuum pipe articulating jumpers are considered here. The values of greatest importance are the forces required at the bayonet moment arms given in Table II and the stresses summarized in Table III. The forces required should be noted and checked that they are acceptable to the problem. The ma… more
Date: August 19, 1988
Creator: Chess, K. & Wendlandt, J.
open access

Analytical theory of ion-temperature-gradient instability

Description: The relationship between the threshold values of ion-temperature-gradient instabilities and the temperature parameters of plasmas is investigated analytically in slab and toroidal geometries separately. It is found that the threshold values increase rapidly when the ion temperature becomes much higher than the electron temperature. The change of the threshold vaues with respect to the ion temperature is quite similar for both geometric models. This finding is consistent with PLT observations. F… more
Date: January 19, 1982
Creator: Guo, S.; Shen, J.; Chen, L. & Tsai, S.T.
open access

Austenitic stainless steels for cryogenic service

Description: Presently available information on austenitic Fe-Cr-Ni stainless steel plate, welds, and castings for service below 77 K are reviewed with the intent (1) of developing systematic relationships between mechanical properties, composition, microstructure, and processing, and (2) of assessing the adequacy of these data bases in the design, fabrication, and operation of engineering systems at 4 K.
Date: September 19, 1985
Creator: Dalder, E.N.C. & Juhas, M.C.
open access

Bibliography: injection technology applicable to geothermal utilization

Description: This bibliography cites 500 documents that may be helpful in planning, analysis, research, and development of the various aspects of injection technology in geothermal applications. These documents include results from government research; development, demonstration, and commercialization programs; selected references from the literature; symposia; references from various technical societies and installations; reference books; reviews; and other selected material. The cited references are from … more
Date: March 19, 1982
Creator: Darnell, A. J. & Eichelberger, R. L.
open access

Brayton-cycle heat-recovery system characterization program. Component test plan

Description: The critical components of the glass furnace subject to corrosion/erosion are: the valve gate and the valve seat bottom and sides which can also be subject to warpage causing subsequent leakage and the furnace flues (or ducting). The Brayton System will be added to the glass furnace just downstream of the reversal valve. Hence, the inlet air to the flues will no longer be at ambient temperature but at a higher level between 800 to 1000/sup 0/F. Also, the exhaust gas for the Brayton System is re… more
Date: January 19, 1981
open access

CaO interaction in the staged combustion of coal

Description: The LIMB (limestone injection multi-stage burner) process offers special potential for reducing NO/sub x/ and SO/sub x/ by at least 50 percent in coal combustion. This is to be accomplished by adding limestone with fuel and/or air in a low NO/sub x/ burner. This program has been directed to defining the chemistry and kinetics necessary to optimize sulfur capture in LIMB combustion. More specifically, this program has attempted to clarify the role of calcium sulfide in LIMB chemistry. When limes… more
Date: December 19, 1983
Creator: Levy, Arthur; Merryman, Earl L. & Rising, Bruce W.
open access

Caribbean Basin Initiative

Description: The Reagan Administration has proposed legislation which would seek to use trade and aid to promote political stability and economic growth in the Caribbean Basin region. Among other things, it would create a one-way free trade zone, where the small nations of the region would have an opportunity for export-led growth through duty-free access to the U.S. market. It would also provide $350 million in economic aid for 1982 to El Salvador and other Caribbean countries.
Date: September 19, 1983
Creator: Sanford, Jonathan E.
open access

Cascade geothermal drilling/corehole N-1

Description: Two core holes have been completed on the flanks of Newberry Volcano, Oregon. Core hole GEO N-1 has a heat flow of 180 mWm-2 reflecting subsurface temperature sufficient for commerical exploitation of geothermally generated electricity. GEO N-3, which has a heat flow of 86 mWm-2, is less encouraging. Considerable emphasis has been placed on the ''rain curtain'' effect with the hope that a detailed discussion of this phenomenon at two distinct localities will lead to a better understanding of th… more
Date: July 19, 1988
Creator: Swanberg, C.A.; Combs, J. (Geothermal Resources International, Inc., San Mateo, CA (USA)) & Walkey, W.C. (GEO Operator Corp., Bend, OR (USA))
open access

Cascade geothermal drilling/corehole N-3

Description: Two core holes have been completed on the flanks of Newberry Volcano, Oregon. Core holes GEO N-1 has a heat flow of 180 mWm-2 reflecting subsurface temperature sufficient for commercial exploitation of geothermally generated electricity. GEO N-3, which has a heat flow of 86 mWm-2, is less encouraging. Considerable emphasis has been placed on the rain curtain'' effect with the hope that a detailed discussion of this phenomenon at two distinct localities will lead to a better understanding of the… more
Date: July 19, 1988
Creator: Swanberg, C.A.
open access

China-U.S. Trade

Description: The improved political relationship between the United States and the People's Republic of China (P.R.C.), initiated by the Nixon Administration and furthered by the Carter Administration's decision to establish diplomatic relations, has spurred a rapid increase in Sino-U.S. trade. While still small relative to overall U.S. foreign trade, the volume of trade represents an abrupt shift from the no-trade policy that had been pursued since 1950. Despite the rapid expansion, outstanding issues rema… more
Date: November 19, 1981
Creator: Holliday, George D. & Hardt, John P.
open access

Collective accelerator using field-reversed plasma rings

Description: This note discusses the possibility of magnetically accelerating the plasma rings. At low-to-moderate ring kinetic energy, application to heating, fueling, and efficient current drive of conventional fusion reactors appears possible. At high ring kinetic energy, applications to inertial-confinement fusion through pellet heating and to transuranic element synthesis appear possible. The rings may be considered to be a self-linking flux bundle having net helicity. From an accelerator point of view… more
Date: September 19, 1981
Creator: Hartman, C. W.
open access

Consequences of toroidal effects in lower hybrid heating of tokamaks

Description: The lower hybrid slow wave tends to follow magnetic field lines. Therefore, a generalization of Snell's Law modifies the wave length along the magnetic field as the wave moves inward from an exciter through regions of varying magnetic field strength. Predicting the consequences requires a numerical treatment, which has been developed in recent years by several authors. This paper searches for some general statements on the problem by analyzing many particular cases, without allowing for scatter… more
Date: January 19, 1982
Creator: Bernabei, S. & Ignat, D. W.
open access

Continued investigations into techniques producing selective chemical reactions on surfaces and target spheres and related studies. Final report

Description: This report describes efforts leading to the development and characterization of a compact ion source and optical transfer system producing relatively high current density ion beams. The ion source and beam transfer system represent a major advance in the state of the art in that high current densities at low kinetic energies have been achieved for high molecular weight polyatomic ions. Indeed, the ion beams produced display ion abundance patterns typical of simple low energy electron impact io… more
Date: February 19, 1982
Creator: Denton, M.B.
open access

Cooling concept integration. Phase I final technical report, October 1, 1979-July 31, 1981. [For pre-engineered metal buildings]

Description: Before specific test prototypes were developed, six potential evaporative roof cooling configurations with alternative storage and heat transfer mechanisms were examined, and preliminary cost estimates were made. Each system uses a wet roof system which sprays or floods the roof, allowing evaporative heat transfer to the environment. Finite difference thermal network methods were used for the evaluation of the systems. Detailed results including charts of the hourly heat flows during particular… more
Date: August 19, 1981
Creator: Fraker, H.; Glennie, W. & Snyder, M.K.
open access

The coupling of stimulated Raman and Brillouin scattering in a plasma

Description: The observation of an anti-Stokes satellite in the spectrum of light backscattered from a CO{sub 2} laser plasma is reported. Its origin is found to be Thomson scattering of the incident light from a counterpropagating mode-coupled plasma wave. The parent electron and ion waves in the mode-coupling process were driven by stimulated Raman and Brillouin backscattering. The parent and daughter plasma waves were detected by ruby laser Thomson scattering. A computer simulation modeling the experimen… more
Date: September 19, 1988
Creator: Umstadter, D.; Mori, W.B. & Joshi, C. (Lawrence Livermore National Lab., CA (USA))
open access

D0 CC Cryostat Test Cooldown - Cooldown Time

Description: The D0 CC Cryostat is to be cold tested with LN{sub 2}. Calculations show that the time required for the 12.5 ton stainless steel inner vessel to reach equilibrium is around 5 hours if the vessel is cooled by introducing liquid into a nozzle at the bottom. The heat transfer calculations contain many assumptions. As a result, the vessel will be cooled by spraying LN{sub 2} through a nozzle at the vessel top, providing as fast a cooldown as desired. Although calculations of the bottom-fill cooldo… more
Date: August 19, 1987
Creator: Fuerst, J. D.
open access

Demonstration of in-tank sludge processing: Part 2, Effect of processing on radionuclides

Description: The scope and cost of the Defense Waste Processing Facility have been significantly reduced by adding in-tank sludge processing to the process flowsheet. A demonstration of in-tank processing was recently completed and the achievement of the major goals described in a previous memo. This memo describes the effect of in-tank sludge processing on the radionuclides in the waste. This memo will also identify those areas that will require further work both before and during the next scheduled in-tan… more
Date: October 19, 1983
Creator: Eibling, R. E. & Hamm, B. A.
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