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2nd Generation PFBC Systems R&D Phase 2 and Phase 3
No work was performed; the two remaining Multi Annular Swirl Burner test campaigns are on hold pending selection of a new test facility (replacement for the shut down UTSI burner test facility) and identification of associated testing costs. The Second-Generation PFB Combustion Plant conceptual design prepared in 1987 is being updated to reflect the benefit of pilot plant test data and the latest advances in gas turbine technology. The updated plant is being designed to operate with 95 percent sulfur capture and a single Siemens Westinghouse (SW) 501G gas turbine. Using carbonizer and gas turbine data generated by Foster Wheeler (FW) and SW respectively, Parsons Energy and Chemicals Group prepared preliminary plant heat and materials based on carbonizer operating temperatures of 1700 and 1800 F and found the former to yield the higher plant efficiency. As a result, 1700 F has been selected as the preferred operating condition for the carbonizer. The previous first cut plant heat and material balance was refined and it predicts a 47.7% plant efficiency (HHV) with a net power output of 421.1 MWe. The latter includes a plant auxiliary load estimated to be 23.5 MWe or 5.26% of the gross plant power and a transformer …
Date:
March 17, 2000
Creator:
Robertson, Archie
Object Type:
Report
System:
The UNT Digital Library
AC losses in conductors based on high {Tc} superconductors
In electrical power devices, ac losses from a superconductor is a primary factor which determines their usefulness as commercial power equipment. For this reason, extensive studies have been carried out on the losses of Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10}/Ag, [Bi(2223)/Ag], tapes. These studies were mostly limited to a single isolated tape. However, a conductor in a power device is surrounded by other conductors and the precise magnetic field distribution around it is very different from that for a single conductor carrying currents or in ac fields. Since the precise field distribution in and around a superconductor is critical in determining the losses, it is very important to measure and to understand the losses in Bi(2223)/Ag tapes which are surrounded by other tapes as in a power device. Taking this fact into consideration, recently the authors have studied ac losses in stacks of Bi(2223)/Ag tapes in parallel and perpendicular applied fields and shown that they can calculate the losses in these cases utilizing the critical state model if a number of appropriate factors about properties of the tape are taken into a consideration. However, in a power device such as a transformer, magnetic fields near the ends of a solenoid …
Date:
March 17, 2000
Creator:
Suenaga, M.
Object Type:
Report
System:
The UNT Digital Library
Advanced CAN (Controller Area Network) Tool
The CAN interface cards that are currently in use are PCMCIA based and use a microprocessor and CAN chip that are no longer in production. The long-term support of the SGT CAN interface is of concern due to this issue along with performance inadequacies and technical support. The CAN bus is at the heart of the SGT trailer. If the CAN bus in the SGT trailer cannot be maintained adequately, then the trailer itself cannot be maintained adequately. These concerns led to the need for a CRADA to help develop a new product that would be called the ''Gryphon'' CAN tool. FM and T provided manufacturing expertise along with design criteria to ensure SGT compatibility and long-term support. FM and T also provided resources for software support. Dearborn provided software and hardware design expertise to implement the necessary requirements. Both partners worked around heavy internal workloads to support completion of the project. This CRADA establishes a US source for an item that is very critical to support the SGT project. The Dearborn Group had the same goal to provide a US alternative to German suppliers. The Dearborn Group was also interested in developing a CAN product that has performance characteristics …
Date:
March 17, 2000
Creator:
Terry, D. J.
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 101, No. 3, Ed. 1 Friday, March 17, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 17, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baytown Sun (Baytown, Tex.), Vol. 78, No. 119, Ed. 1 Friday, March 17, 2000
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
March 17, 2000
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 95, No. 22, Ed. 1 Friday, March 17, 2000
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
March 17, 2000
Creator:
Keasling, Edna & Fierro, Jennifer
Object Type:
Newspaper
System:
The Portal to Texas History
Brady Standard and Heart O' Texas News (Brady, Tex.), Vol. 91, No. 25, Ed. 1 Friday, March 17, 2000
Weekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
March 17, 2000
Creator:
Stewart, James E.
Object Type:
Newspaper
System:
The Portal to Texas History
Calculational Benchmark Problems for VVER-1000 Mixed Oxide Fuel Cycle
Standard problems were created to test the ability of American and Russian computational methods and data regarding the analysis of the storage and handling of Russian pressurized water reactor (VVER) mixed oxide fuel. Criticality safety and radiation shielding problems were analyzed. Analysis of American and Russian multiplication factors for fresh fuel storage for low-enriched uranium (UOX), weapons- (MOX-W) and reactor-grade (MOX-R) MOX differ by less than 2% for all variations of water density. For shielding calculations for fresh fuel, the ORNL results for the neutron source differ from the Russian results by less than 1% for UOX and MOX-R and by approximately 3% for MOX-W. For shielding calculations for fresh fuel assemblies, neutron dose rates at the surface of the assemblies differ from the Russian results by 5% to 9%; the level of agreement for gamma dose varies depending on the type of fuel, with UOX differing by the largest amount. The use of different gamma group structures and instantaneous versus asymptotic decay assumptions also complicate the comparison. For the calculation of dose rates from spent fuel in a shipping cask, the neutron source for UOX after 3-year cooling is within 1% and for MOX-W within 5% of one of …
Date:
March 17, 2000
Creator:
Emmett, M.B.
Object Type:
Report
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 105, No. 22, Ed. 1 Friday, March 17, 2000
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
March 17, 2000
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Dallas Voice (Dallas, Tex.), Vol. 16, No. 46, Ed. 1 Friday, March 17, 2000
Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date:
March 17, 2000
Creator:
Vercher, Dennis
Object Type:
Newspaper
System:
The UNT Digital Library
Development of the 2-MV injector for HIF
The 2-MV Injector consists of a 17-cm-diameter surface ionization source, an extraction diode, and an electrostatic quadrupole (ESQ) accelerator, with maximum current of 0.8 A of potassium beam at 2 MeV. Previous performance of the Injector produced a beam with adequate current and emittance but with a hollow profile at the end of the ESQ section. We have examined the profile of the beam as it leaves the diode. The measured nonuniform beam density distribution qualitatively agrees with EGUN simulation. Implications for emittance growth in the post acceleration and transport phase will be investigated.
Date:
March 17, 2000
Creator:
Bieniosek, F. M.; Kwan, J. W.; Henestroza, E. & Kim, C.
Object Type:
Article
System:
The UNT Digital Library
Enrique: A case study of a gifted computer user
The author has been investigating the affective and intellectual views that gifted children have about computers. These studies have used various methodological approaches in order to develop a broad perspective on the issues involved in this topic. The author has used survey instruments (Sesko, 1998) and interview techniques (Sesko, 1999) to capture both statistical and narrative data. The objective of this study is to explore in depth the interactions that one student has with the machine and its applications. The driver for this and the previous studies was the paucity of research in the area of gifted and talented children and their involvement with what has become the primary intellectual tool of the century (Turkel, 1984). The second reason is that it has been posited that the intellectual characteristics of gifted children should enable those who are interested in computers to achieve a high level of proficiency with either computer applications or programming. Further, the ability to learn things at a young age should allow gifted children who use computers to develop a large variety of computer-based activities. The author has shown evidence to support these ideas in previous work. Finally, as Hausman (1985) claims, facilities with computers should allow …
Date:
March 17, 2000
Creator:
Sesko, S C
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Friday, March 17, 2000
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 17, 2000
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Funeral Program for Joseph Alfred Brown, March 17, 2000]
Funeral program for Joseph Alfred Brown, born May 28, 1915 and died March 13, 2000. The funeral was held Friday, March 17, 2000 at Second Baptist Church, officiated by Rev. Robert L. Jemerson. Funeral arrangements were made through Lewis Funeral Home and he was buried in Fort Sam Houston National Cemetery near San Antonio, Texas.
Date:
March 17, 2000
Creator:
unknown
Object Type:
Pamphlet
System:
The Portal to Texas History
Grandview Tribune (Grandview, Tex.), Vol. 105, No. 31, Ed. 1 Friday, March 17, 2000
Weekly newspaper from Grandview, Texas that includes local, state, and national news along with advertising.
Date:
March 17, 2000
Creator:
Bosher, Casey & Marten, Donna K.
Object Type:
Newspaper
System:
The Portal to Texas History
The Heavy Ion Fusion Program in the USA
The U.S. Department of Energy has established a new, larger inertial fusion energy program. To manage program growth, we have developed a new inertial fusion energy research and we have established a Virtual National Laboratory for Heavy Ion Fusion. There has been significant technical progress. Improvements in target design have reduced the predicted energy requirements by approximately a factor of two. There have also been important experiments on chamber dynamics and other inertial fusion technologies. The accelerator program has completed a number of small-scale experiments. Experiments with driver-scale beams are being designed -- including experiments with driver-scale ion sources and injectors. Finally we are developing the technologies needed to build a major research facility known as the Integrated Research Experiment (IRE)
Date:
March 17, 2000
Creator:
Bangerter, R.O.
Object Type:
Article
System:
The UNT Digital Library
The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 205, No. 10, Ed. 1 Friday, March 17, 2000
Weekly newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.
Date:
March 17, 2000
Creator:
Keys, Scott & Lamb, Bill
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 43, No. 28, Ed. 1 Friday, March 17, 2000
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
March 17, 2000
Creator:
Lynch, Mary Louise
Object Type:
Newspaper
System:
The Portal to Texas History
Improved framing and ductwork lower energy costs, McStain Enterprises - Longmont, CO: Building America Project summary fact sheet
McStain Enterprises' new cottage-style homes built under the U.S. Department of Energy's Building America program are designed to greatly reduce energy costs and improve indoor air quality for their customers in Longmont, Colorado. In addition, energy-efficient features in the homes provide owners with greater durability and value, allow some buyers to qualify for special energy-efficient mortgages, and can result in higher resale values. Features include improved building envelope and air distribution systems, high-efficiency heating and cooling systems, improved indoor air quality, and Green Builder concepts from Colorado's Green Builder Program.
Date:
March 17, 2000
Creator:
Hendron, B.
Object Type:
Book
System:
The UNT Digital Library
In Situ Redox Manipulation of Subsurface Sediments from Fort Lewis, Washington: Iron Reduction and TCE Dechlorination Mechanisms
The feasibility of chemically treating sediments from the Ft. Lewis, Washington, Logistics Center to develop a permeable barrier for dechlorination of TCE was investigated in a series of laboratory experiments.
Date:
March 17, 2000
Creator:
Szecsody, James E.; Fruchter, Jonathan S.; Sklarew, Deborah S. & Evans, John C.
Object Type:
Report
System:
The UNT Digital Library
In Situ Redox Manipulation of Subsurface Sediments from Fort Lewis, Washington: Iron Reduction and TCE Dechlorination Mechanisms
The feasibility of chemically treating sediments from the Ft. Lewis, Washington, Logistics Center to develop a permeable barrier for dechlorination of TCE was investigated in a series of laboratory experiments.
Date:
March 17, 2000
Creator:
Szecsody, J. E.; Fruchter, J. S.; Sklarew, D. S. & Evans, J. C.
Object Type:
Report
System:
The UNT Digital Library
Intense ion beam propagation in a reactor sized chamber
The authors consider the physics of the ballistic transport of intense ion beams in a heavy ion fusion reactor chamber filled with low pressure FLIBE gas. The authors consider first a single beam envelope model and show via a simple case that emittance growth is an issue in the chamber as well as in the accelerator. They develop a model for the neutralization of beam space-charge by the electrons produced by gas ionization by the beam and derive an expression for the evolution of the neutralization factor as the beam propagates into the chamber. They then extend the envelope model from a one species beam to a beam of ions of several charge states by considering the entire beam as a set of subbeams (one for each charge state) each described with coupled envelope equation. The fully electromagnetic PIC code BPIC was used to investigate the behavior in greater detail. A parametric study of the sensitivity of the final spot radius at the target versus the ion beam stripping and gas ionization cross-sections (which are characterized by large uncertainties) shows that, in the studied regime (Hylife-II parameters), the accessible window of cross-sections for ballistic transport in the chamber through neutral …
Date:
March 17, 2000
Creator:
Vay, J. L. & Deutsch, C.
Object Type:
Article
System:
The UNT Digital Library
Invert Effective Thermal Conductivity Calculation
The objective of this calculation is to evaluate the temperature-dependent effective thermal conductivities of a repository-emplaced invert steel set and surrounding ballast material. The scope of this calculation analyzes a ballast-material thermal conductivity range of 0.10 to 0.70 W/m {center_dot} K, a transverse beam spacing range of 0.75 to 1.50 meters, and beam compositions of A 516 carbon steel and plain carbon steel. Results from this calculation are intended to support calculations that identify waste package and repository thermal characteristics for Site Recommendation (SR). This calculation was developed by Waste Package Department (WPD) under Office of Civilian Radioactive Waste Management (OCRWM) procedure AP-3.12Q, Revision 1, ICN 0, Calculations.
Date:
March 17, 2000
Creator:
Anderson, M. J.; Wade, H. M. & Mitchell, T. L.
Object Type:
Report
System:
The UNT Digital Library
The Message, Volume 36, March 17, 2000
Newsletter of Congregation Beth Yeshurun in Houston, including news and events, upcoming services, member announcements, editorials, and other information of interest to congregants.
Date:
March 17, 2000
Creator:
Congregation Beth Yeshurun (Houston, Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History