Preliminary design of a cryogenic thermoelectric generator.

Preliminary design of a cryogenic thermoelectric generator.

Date: May 2007
Creator: Sivapurapu, Sai Vinay Kumar
Description: A cryogenic thermoelectric generator is proposed to increase the efficiency of a vehicle propulsion system that uses liquid nitrogen as its fuel. The proposed design captures some of the heat required for vaporizing or initial heating of the liquid nitrogen to produce electricity. The thermoelectric generator uses pressurized liquid nitrogen as its cold reservoir and ambient air as the high-temperature reservoir to generate power. This study concentrated on the selection of thermoelectric materials whose properties would result in the highest efficiency over the operating temperature range and on estimating the initial size of the generator. The preliminary selection of materials is based upon their figure of merit at the operating temperatures. The results of this preliminary design investigation of the cryogenic thermoelectric generator indicate that sufficient additional energy can be used to increase overall efficiency of the thermodynamic cycle of a vehicle propulsion system.
Contributing Partner: UNT Libraries
Feminist Design Methodology: Considering the Case of Maria Kipp

Feminist Design Methodology: Considering the Case of Maria Kipp

Date: December 2003
Creator: Lawrence, Anne
Description: This thesis uses the work and career of the textile designer Maria Kipp to stage a prolegomena concerning how to write about a female designer active during the middle of the twentieth century. How can design historians incorporate new methodologies in the writing of design history? This thesis explores the current literature of feminist design history for solutions to the potential problems of the traditional biography and applies these to the work and career of Kipp. It generates questions concerning the application of methodologies, specifically looking at a biographical methodology and new methodologies proposed by feminist design historians. Feminist writers encourage scholarship on unknown designers, while also they call for a different kind of writing and methodology. The goal of this thesis is to examine how these new histories are written and in what ways they might inspire the writing of Kipp into design history.
Contributing Partner: UNT Libraries
Preliminary design and estimate of capital and operating costs for a production scale application of laser decontamination technology

Preliminary design and estimate of capital and operating costs for a production scale application of laser decontamination technology

Date: August 6, 1994
Creator: Pang, Ho-ming & Edelson, M.C.
Description: The application of laser ablation technology to the decontamination of radioactive metals, particularly the surfaces of equipment, is discussed. Included is information related to the design, capital and operating costs, and effectiveness of laser ablation technology, based on commercial excimer and Nd:YAG lasers, for the decontamination of production scale equipment.
Contributing Partner: UNT Libraries Government Documents Department
The LCLS X-Ray FEL at SLAC

The LCLS X-Ray FEL at SLAC

Date: February 9, 1999
Creator: Cornacchia, Massimo
Description: The design status and R and D plan of a 1.5 Angstrom SASE-FEL at SLAC, called the Linac Coherent Light Source (LCLS), are described. The LCLS utilizes one third of the SLAC linac for the acceleration of electrons to about 15 GeV. The FEL radiation is produced in a long undulator and is directed to an experimental area for its utilization. The LCLS is designed to produce 300 fsec long radiation pulses at the wavelength of 1.5 Angstrom with 9 GW peak power. This radiation has much higher brightness and coherence, as well as shorter pulses, than present 3rd generation sources. It is shown that such leap in performance is now within reach, and is made possible by the advances in the physics and technology of photo-injectors, linear accelerators, insertion devices and free-electron lasers.
Contributing Partner: UNT Libraries Government Documents Department
Plasma gate switch experiment on Pegasus II

Plasma gate switch experiment on Pegasus II

Date: September 1, 1995
Creator: Wysocki, F.J.; Benage, J.F. Jr. & Shlachter, J.S.
Description: The plasma gate switch is a novel technique for producing a long conduction time vacuum opening switch. The switch consists of an aluminum foil which connects the cathode to the anode in a coaxial geometry. The foil is designed so that the maximum axial acceleration is in the center of the foil and that at the appropriate time, the center opens up and magnetic flux is carried down the gun to the load region. The switch is designed to minimize the amount of mass transported into the load region. We have completed the first experimental test of this design and present results from the test. These results indicate there were some asymmetry problems in the construction of the switch but that otherwise the switch performed as expected.
Contributing Partner: UNT Libraries Government Documents Department
The magnet system of the Relativistic Heavy Ion Collider (RHIC)

The magnet system of the Relativistic Heavy Ion Collider (RHIC)

Date: July 1, 1995
Creator: Greene, A.; Anerella, M. & Cozzolino, J.
Description: The Relativistic Heavy Ion Collider now under construction at Brookhaven National Laboratory (BNL) is a colliding ring accelerator to be completed in 1999. Through collisions of heavy ions it is hoped to observe the creation of matter at extremely high temperatures and densities, similar to what may have occurred in the original ``Big Bang.`` The collider rings will consist of 1740 superconducting magnet elements. Some of elements are being manufactured by industrial partners (Northrop Grumman and Everson Electric). Others are being constructed or assembled at BNL. A description is given of the magnet designs, the plan for manufacturing and test results. In the manufacturing of the magnets, emphasis has been placed on uniformity of their performance and on quality. Results so far indicate that this emphasis has been very successful.
Contributing Partner: UNT Libraries Government Documents Department
LANSCE beam current limiter

LANSCE beam current limiter

Date: June 1, 1996
Creator: Gallegos, F.R.
Description: The Radiation Security System (RSS) at the Los Alamos Neutron Science Center (LANSCE) provides personnel protection from prompt radiation due to accelerated beam. Active instrumentation, such as the Beam Current Limiter, is a component of the RSS. The current limiter is designed to limit the average current in a beam line below a specific level, thus minimizing the maximum current available for a beam spill accident. The beam current limiter is a self-contained, electrically isolated toroidal beam transformer which continuously monitors beam current. It is designed as fail-safe instrumentation. The design philosophy, hardware design, operation, and limitations of the device are described.
Contributing Partner: UNT Libraries Government Documents Department
TPX: Contractor preliminary design review. Volume 2, PF systems engineering

TPX: Contractor preliminary design review. Volume 2, PF systems engineering

Date: July 28, 1995
Creator: Calvin, H.A.
Description: This system development specification covers the Poloidal Field (PF) Magnet System, WBS 14 in the Princeton Plasma Physics Laboratory TPX Program to build a tokamak fusion reactor. This specification establishes the performance, design, development and test requirements of the PF Magnet System.
Contributing Partner: UNT Libraries Government Documents Department
HIPPI: What is it, where did it come from, and where is it going?

HIPPI: What is it, where did it come from, and where is it going?

Date: May 1, 1996
Creator: Tolmie, D.
Description: The first commercial High-Performance Parallel Interface (HIPPI) equipment was delivered in 1988, and HIPPI is the current interface of choice for supercomputers and other high end equipment. HIPPI currently supports data rates of 800 and 1600 Mbit/s. The evolution of HIPPI will be described, including some of the design choices made, describing where the author feels each came from, and the strengths and weaknesses of each. The HIPPI standards committee is now working on a new physical layer interface supporting data transfer rates of 6. 4 Gbit/s, an increase of eight times the current common HIPPI rate. The design objectives will be discussed, and the new interface will be described.
Contributing Partner: UNT Libraries Government Documents Department
Advanced gas turbine systems research quarterly report, July-- September 1995

Advanced gas turbine systems research quarterly report, July-- September 1995

Date: October 1, 1995
Creator: unknown
Description: Major accomplishments and reports issued during the quarter are reported.
Contributing Partner: UNT Libraries Government Documents Department
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