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Construction and Testing of a Low-power Cryostat for MARS

Description: A low-power cryostat was designed and built for the Multi-sensor Airborne Radiation Survey (MARS) project for the purpose of housing a close-packed high-purity germanium (HPGe) detector array of 14 HPGe detectors. The power consumption of the cold mass in the cryostat was measured to be 4.07(11) watts, sufficient for 5.5 days of continuous operation using only 8 liters of liquid nitrogen. Temperatures throughout the cryostat were measured by platinum resistance temperature detectors. These meas… more
Date: October 1, 2007
Creator: Aalseth, Craig E.; Caggiano, Joseph A.; Day, Anthony R.; Fast, James E. & Fuller, Erin S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Heavy-Duty Emissions Control: Plasma-Facilitated vs Reformer-Assisted Lean NOx Catalysis

Description: Progress has been made in the control of combustion processes to limit the formation of environmentally harmful species, but lean burn vehicles, such as those powered by diesel engines used for the majority of commercial trucking and off-road applications, remain a major source of nitrogen oxides (NOx) and particulate matter (PM) emissions. Tighter control of the combustion process coupled with exhaust gas recirculation has brought emissions in line with 2004 targets worldwide. Additional modif… more
Date: August 24, 2003
Creator: Aardahl, C. L.; Rozmiarek, R. T.; Rappe, K. G.; Mendoza, D. P. & Park, P. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermal Treatment of Wastes in an Advanced Cyclonic Combustor

Description: IGT is developing an advanced waste combustion concept, based on cyclonic combustion principles, for application to a wide range of industrial wastes. In IGT's cyclonic combustor, a mixture of fuel and combustion air is fed tangentially at a relatively high velocity into a cylindrical chamber. The waste is injected either tangentially with the fuel or separately in a tangential, radial, or axial configuration. This approach provides high combustion intensity with internal recirculation of combu… more
Date: January 1, 1991
Creator: Abbasi, H. A.; Khinkis, M. J. & Kunc, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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An engineering and economic evaluation of the methane de-NOX{sup SM} technology

Description: The Institute of Gas Technology (IGT) and Ogden Martin Systems, Inc. (OMS) are conducting joint engineering and economic evaluation of IGT`s METHANE de-NOX{sup SM} technology for its application to new, as well as retrofit, municipal waste combustors (MWCs). It is anticipated that this new technology offers a technically and economically attractive alternative to existing selective noncatalytic reduction (SNCR) systems for new facilities, as well as in retrofit applications. Consequently, IGT a… more
Date: December 31, 1993
Creator: Abbasi, H. A.; Khinkis, M. J. & Scherrer, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of Natural Gas Injection Technology for NO Sub X Reduction From Municipal Waste Combustors

Description: Natural gas injection (NGI) technology for reducing NO{sub x} emissions from municipal waste combustors (MWCs) is being developed. The approach involves the injection of natural gas, together with recirculated flue gases (for mixing), above the grate to provide reducing combustion conditions that promote the destruction of NO{sub x} precursors, as well as NO{sub x}. Extensive development testing was subsequently carried out in a 2.5 {times} 10{sup 6} Btu/h (0.7 MWth) pilot-scale MWC firing actu… more
Date: January 1, 1991
Creator: Abbasi, H. A.; Khinkis, Mark J.; Penterson, Craig A.; Zone, F.; Dunnette, R.; Nakazato, K. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of natural gas reburning for control of NO sub x from municipal waste combustors

Description: The Gas Research Institute (GRI) and the Institute of Gas Technology (IGT), in cooperation with Riley Stoker Corporation (Riley), USA, and Takuma Company Ltd. (Takuma), Japan, have developed a gas reburn process for application to municipal waste combustors (MWCs). The reburn process is based on extensive full-scale MWC in-furnace characterization and furnace gas simulation experimental testing. The approach, based on the use of recirculated flue gas to inject and mix natural gas in the reburn … more
Date: January 1, 1991
Creator: Abbasi, H.; Tarman, P.B. (Institute of Gas Technology, Chicago, IL (United States)) & Linz, D.G. (Gas Research Inst., Chicago, IL (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Toxic vapor cloud impacts from accidental releases of anhydrous ammonia and nitrogen dioxide at the ICPP NO{sub x} Abatement Facility

Description: This report evaluates potential atmospheric and human health impacts that may result from accidental releases of anhydrous ammonia and nitrogen dioxide at the Idaho Chemical Processing Plant (ICPP) NO{sub x} Abatement Facility. Excess process gas releases are evaluated using a traditional Gaussian puff model. Dense two-phase aerosol releases from an 18,000 gallon liquefied ammonia storage tank and a 6,000 gallon tanker truck accident are evaluated using the refined vapor dispersion model, SLAB.… more
Date: April 1, 1992
Creator: Abbott, M. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Toxic vapor cloud impacts from accidental releases of anhydrous ammonia and nitrogen dioxide at the ICPP NO sub x Abatement Facility

Description: This report evaluates potential atmospheric and human health impacts that may result from accidental releases of anhydrous ammonia and nitrogen dioxide at the Idaho Chemical Processing Plant (ICPP) NO{sub x} Abatement Facility. Excess process gas releases are evaluated using a traditional Gaussian puff model. Dense two-phase aerosol releases from an 18,000 gallon liquefied ammonia storage tank and a 6,000 gallon tanker truck accident are evaluated using the refined vapor dispersion model, SLAB.… more
Date: April 1, 1992
Creator: Abbott, M.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The role of catalyst precursor anions in coal gasification

Description: The aims of the proposed project are to enrich our understanding of the roles of various aqueous soluble catalyst precursor anions on the surface electrical properties of coal and to ascertain the influence of the surface charge on the adsorption, dispersion, and activities of calcium and potassium. These goals will be achieved by impregnating a demineralized North Dakota lignite (PSOC 1482) with calcium or potassium catalyst precursors containing acetate (CH[sub 3]COO[sup [minus]]), chloride (… more
Date: January 1, 1992
Creator: Abotsi, G.M.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The role of catalyst precursor anions in coal gasification

Description: The aims of the proposed project are to enrich our understanding of the roles of various aqueous soluble catalyst precursor anions on the surface electrical properties of coal and to ascertain the influence of the surface charge on the adsorption, dispersion, and activities of calcium and potassium. These goals will be achieved by impregnating a lignite and its demineralized derivative with calcium or potassium catalyst precursors containing acetate (CH{sub 3}COO{minus}), chloride (Cl{minus}), … more
Date: January 1, 1992
Creator: Abotsi, G.M.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A model approach to highly dispersing catalytic materials in coal for gasification

Description: This project seeks to develop a technique, based on coal surface properties, for highly dispersing catalysts in coal for gasification and to investigate the potential of using potassium carbonate and calcium acetate mixtures as catalysts for coal gasification. The lower cost and higher catalytic activity of the latter compound will produce economic benefits by reducing the amount of K[sub 2]CO[sub 3] required for high coal char reactivities. As was shown in previous reports, coal loading with p… more
Date: January 1, 1992
Creator: Abotsi, G.M.K. & Bota, K.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A novel approach to highly dispersing catalytic materials in coal for gasification

Description: This project seeks to develop a technique, based on coal surface properties, for highly dispersing catalysts in coal for gasification and to investigate the potential of using potassium carbonate and calcium acetate mixtures as catalysts for coal gasification. The work is focused on the elucidation of coal-catalyst precursor interactions in solution and the variables which control the adsorption and dispersion of coal gasification metal catalysts. In order to optimize coal-metal ion interaction… more
Date: January 1, 1990
Creator: Abotsi, G.M.K. & Bota, K.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Scientific Report

Description: Viscosities of water, nitrogen and carbon dioxide have been measured at elevated pressures and temperatures in the diamond-anvil cell. A strong correlation between viscosity and entropy has been confirmed.
Date: June 26, 2009
Creator: Abramson, Evan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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NEUTRON TISSUE DOSE AT LARGE DISTANCES FROM AN ELEVATED UNSHIELDED REACTOR

Description: The neutron tissue dose at large distances from a fission source was studied by using a water-filled phantom and four different detectors: a BF/sub 3/ counter, a polyethylenelined ethylene-filled proportional counter, indium foils, and nuclear emulsions. The source of fission neutrons was the ORNL Health Physics Research Reactor which was attached to a hoist which was in turn installed on a 1530-foot tower. The reactor could be operated at any elevation from 27 to 1500 ft. The phantom studies w… more
Date: March 11, 1963
Creator: Aceto, H. Jr.; Pick, M.A. & Stephens, L.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Comprehensive Study of Surface Chemistry for Application to Engine NOx Aftertreatment

Description: This work focuses on developing a scientific understanding of the processes associated with NO{sub x} trap operation. NO{sub x} traps are the most advanced technology for achieving future emissions standards with diesel engines. Successful development of NO{sub x} traps will allow widespread use of diesel engines in light-duty vehicles, reducing oil imports by as much as 60%. Diesel engines have a high efficiency and low maintenance that makes them the ideal choice for transportation applicatio… more
Date: February 19, 2004
Creator: Aceves, S M; Piggot, T; Pitz, W; Mundy, C; Kuo, W & Havstad, M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analysis of experimental hydrogen engine data and hydrogen vehicle performance and emissions simulation

Description: This paper reports the engine and vehicle simulation and analysis done at Lawrence Livermore (LLNL) as a part of a joint optimized hydrogen engine development effort. Project participants are: Sandia National Laboratory, California (SNLC), responsible for experimental evaluation; Los Alamos National Laboratory (LANL), responsible for detailed fluid mechanics engine evaluations, and the University of Miami, responsible for engine friction reduction. Fuel cells are considered as the ideal power s… more
Date: September 1996
Creator: Aceves, S. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Lean-burn hydrogen spark-ignited engines: the mechanical equivalent to the fuel cell

Description: Fuel cells are considered as the ideal power source for future vehicles, due to their high efficiency and low emissions. However, extensive use of fuel cells in light-duty vehicles is likely to be years away, due to their high manufacturing cost. Hydrogen-fueled, spark-ignited, homogeneous-charge engines offer a near-term alternative to fuel cells. Hydrogen in a spark-ignited engine can be burned at very low equivalence ratios, so that NO[sub x] emissions can be reduced to less than 10 ppm with… more
Date: October 1, 1996
Creator: Aceves, S. M. & Smith, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analysis of Homogeneous Charge Compression Ignition (HCCI) Engines for Cogeneration Applications

Description: This paper presents an evaluation of the applicability of Homogeneous Charge Compression Ignition Engines (HCCI) for small-scale cogeneration (less than 1 MWe) in comparison to five previously analyzed prime movers. The five comparator prime movers include stoichiometric spark-ignited (SI) engines, lean burn SI engines, diesel engines, microturbines and fuel cells. The investigated option, HCCI engines, is a relatively new type of engine that has some fundamental differences with respect to oth… more
Date: April 30, 2004
Creator: Aceves, S; Martinez-Frias, J & Reistad, G
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Utilization of low-quality natural gas: A current assessment. Final report

Description: The objective of this report is to evaluate the low quality natural gas (LQNG) resource base, current utilization of LQNG, and environmental issues relative to its use, to review processes for upgrading LQNG to pipeline quality, and to make recommendations of research needs to improve the potential for LQNG utilization. LQNG is gas from any reservoir which contains amounts of nonhydrocarbon gases sufficient to lower the heating value or other properties of the gas below commercial, pipeline sta… more
Date: January 1, 1993
Creator: Acheson, W. P.; Hackworth, J. H.; Kasper, S. & McIlvried, H. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Power generation systems for NOx reduction. CRADA final report for CRADA Number Y-1292-0111

Description: The Cooperative Research and Development Agreement (CRADA) No. Y1292-0111, between Allison Gas Turbine Division of General Motors Corporation and Lockheed Martin Energy Systems, under contract to the US Department of Energy, is entitled ``Power Generation Systems for NOx Reduction``. The objective of this effort was to design, develop, and demonstrate an integrated turbine genset suitable for high efficiency power generation requirements. The result of this effort would have been prototype gene… more
Date: April 30, 1996
Creator: Adams, D.J. & Berenyi, S.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Turbine-generator set development for power generation

Description: The goal of this effort was to design, develop, and demonstrate an integrated turbine genset suitable for the power generation requirements of a hybrid automotive propulsion system. The result of this effort would have been prototype generator hardware including controllers for testing and evaluation by Allison Engine Company. The generator would have been coupled to a suitably sized and configured gas turbine engine, which would operate on a laboratory load bank. This effort could lead to exte… more
Date: April 15, 1997
Creator: Adams, D.J. & Berenyi, S.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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LX-13 component development scale up evaluation

Description: The intermediate phase oif the continuous PETN process development has been completed. After the initial development oif the process on a small scale, the intermediate step was to determine if the process will scale up to a production lot size and still maintain adequate performance. Preliminary data indicate that this process is feasible on a production scale. Three 18-kg lots (production size) showed good repeatable performance, firing on all tracks while maintaining acceptable extrudability.
Date: October 1, 1976
Creator: Adams, J. C.; Osborn, A. G. & Stallings, T. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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