Powered by Deep Web Technologies
Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Geek-Up[08.27.10] -- Geothermal Stores, Graphene Loops, Nozzle Technology  

Broader source: Energy.gov (indexed) [DOE]

Geek-Up[08.27.10] -- Geothermal Stores, Graphene Loops, Nozzle Geek-Up[08.27.10] -- Geothermal Stores, Graphene Loops, Nozzle Technology and the 1918 El Niño Geek-Up[08.27.10] -- Geothermal Stores, Graphene Loops, Nozzle Technology and the 1918 El Niño August 27, 2010 - 5:21pm Addthis Blue flame generated by natural gas. Blue flame generated by natural gas. Elizabeth Meckes Elizabeth Meckes Director of User Experience & Digital Technologies, Office of Public Affairs With the opening of a new IKEA in suburban Denver slated for fall 2011, Coloradans can expect more than affordable home furnishings: the Centennial store will be the first IKEA to be built with geothermal heating and cooling. The retailers have partnered with the National Renewable Energy Laboratory to study and demonstrate the advantages of a geothermal heating system. By

2

Geek-Up[08.27.10] -- Geothermal Stores, Graphene Loops, Nozzle Technology  

Broader source: Energy.gov (indexed) [DOE]

8.27.10] -- Geothermal Stores, Graphene Loops, Nozzle 8.27.10] -- Geothermal Stores, Graphene Loops, Nozzle Technology and the 1918 El Niño Geek-Up[08.27.10] -- Geothermal Stores, Graphene Loops, Nozzle Technology and the 1918 El Niño August 27, 2010 - 5:21pm Addthis Blue flame generated by natural gas. Blue flame generated by natural gas. Elizabeth Meckes Elizabeth Meckes Director of User Experience & Digital Technologies, Office of Public Affairs With the opening of a new IKEA in suburban Denver slated for fall 2011, Coloradans can expect more than affordable home furnishings: the Centennial store will be the first IKEA to be built with geothermal heating and cooling. The retailers have partnered with the National Renewable Energy Laboratory to study and demonstrate the advantages of a geothermal heating system. By

3

Geek-Up[08.27.10] -- Geothermal Stores, Graphene Loops, Nozzle...  

Broader source: Energy.gov (indexed) [DOE]

08.27.10 -- Geothermal Stores, Graphene Loops, Nozzle Technology and the 1918 El Nio Geek-Up08.27.10 -- Geothermal Stores, Graphene Loops, Nozzle Technology and the 1918 El...

4

Multi-nozzle array spray cooling for large area high power devices in a closed loop system  

Science Journals Connector (OSTI)

Abstract A prototype of a closed loop system was built to study multi-nozzle array spray cooling on high-power, large-area electronic devices. Fifty-four nozzles with an in-lined array of 9 6 were applied to spray cool a simulated 6U electronic card using R134a. Simple drainage concepts were introduced to assist the drainage of both liquid and vapour on the heated surface. The results indicated a promising prospect of using a multi-nozzle array on large-area power electronics cooling. 16kW heat was removed from the 6U card area by maintaining the mean surface temperature below 26.5 C . Heat transfer coefficient up to 2.8 10 4 W / m 2 K was obtained, and liquid usage fraction as high as 0.88 was achieved before CHF occurred. It was found that increasing nozzle pressure drop or flow rate enhanced heat transfer and gave better surface temperature uniformity. Chamber pressure significantly influenced mean surface temperature, but had no observable effects on surface temperature uniformity. The control of chamber pressure can maintain a constant temperature on the heated surface when heat load varied largely. The results also showed that the spray-to-spray interactions had inconspicuous effects on local surface temperatures but rather the distance from a location relative to the drainage outlets.

J.L. Xie; Y.B. Tan; T.N. Wong; F. Duan; K.C. Toh; K.F. Choo; P.K. Chan; Y.S. Chua

2014-01-01T23:59:59.000Z

5

Solid looping cycles: A new technology for coal conversion  

SciTech Connect (OSTI)

This article examines both oxygen looping cycles (otherwise known as chemical looping combustion), and lime-based CO{sub 2} looping cycles, where calcined limestone is used for in situ CO{sub 2} capture. There has been a rapid rise in the amount of research carried out recently, and both technologies are likely to see practical application in the near future. However, these technologies urgently require demonstration at the large pilot-plant level - in the case of chemical looping cycles for use with high-pressure syngas of the type likely to be produced by current coal gasification technologies and in the case of CO{sub 2} looping cycles both for combustion and gasification applications with coal. Both approaches have potential for application in schemes for H{sub 2} production, but these have not been considered here, although such applications will also inevitably follow in the medium to long term.

Anthony, E.J. [CANMET Energy Technology Centre Ottawa, Ottawa, ON (Canada). Natural Resources Canada

2008-03-19T23:59:59.000Z

6

NETL: Alstom's Chemical Looping Combustion Technology with CO2 Capture  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Alstom's Chemical Looping Combustion Technology with CO2 Capture for New and Existing Coal-Fired Power Plants Alstom's Chemical Looping Combustion Technology with CO2 Capture for New and Existing Coal-Fired Power Plants Project No.: DE-FE0009484 Alstom is advancing the development of Limestone Chemical Looping Combustion (LCL-C(tm)) technology. Chemical looping has no direct contact between air and fuel. The looping process usually utilizes oxygen from a metal carrier, but in this case, limestone is used. Economic evaluations will be made of four LCL-C plant configurations. The base configuration plant has already been completed and will be updated from previous reports. A second case will compare the effects of designing the reducer reactor using CFB sizing standards. A third case will investigate the effects of using a pressurized reducer reactor. Pressurizing the reducer reduces the reactor size and reduces the amount of compression required for the CO2 outlet gas stream. A fourth case will investigate the use of an advanced ultra-supercritical (USC) steam cycle. The advanced USC steam cycle should increase overall plant efficiency and lower the cost of electricity. Mass and energy balances will be done for each case. The four LCL-CTM cases will be compared against a supercritical pulverized coal-fired plant without CO2 capture.

7

Hybrid Combustion-Gasification Chemical Looping Coal Power Technology Development  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Gasification Gasification Technologies contacts Gary J. stiegel Gasification Technology Manager National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236 412-386-4499 gary.stiegel@netl.doe.gov Ronald Breault Project Manager National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507 304-285-4486 ronald.breault@netl.doe.gov Herbert E. andrus, Jr. Principal Investigator ALSTOM Power 2000 Day Hill Rd. Windsor, CT 06095 860-285-4770 herbert.e.andrus@power.alstom.com Hybrid Combustion-GasifiCation CHemiCal loopinG Coal power teCHnoloGy development Description Gasification technologies can provide a stable, affordable energy supply for the nation, while also providing high efficiencies and near zero pollutants. With coal

8

Coal-fueled diesel technology development: Nozzle development for coal-fueled diesel engines  

SciTech Connect (OSTI)

Direct injection of a micronized coal water mixture fuel into the combustion chambers of a diesel engine requires atomizing an abrasive slurry fuel with accurately sized orifices. Five injector orifice materials were evaluated: diamond compacts, chemical vapor deposited diamond tubes, thermally stabilized diamond, tungsten carbide with cobalt binder, and tungsten carbide with nickel binder with brazed and mechanically mounted orifice inserts. Nozzle bodies were fabricated of Armco 17-4 precipitation hardening stainless steel and Stellite 6B in order to withstand cyclic injection pressures and elevated temperatures. Based on a total of approximately 200 cylinder hours of engine operation with coal water mixture fuel diamond compacts were chosen for the orifice material.

Johnson, R.N.; Lee, M.; White, R.A.

1994-01-01T23:59:59.000Z

9

Nozzle development  

SciTech Connect (OSTI)

The objective of this program has been the development of experimental techniques and data processing procedures to allow for the characterization of multi-phase fuel nozzles using laboratory tests. Test results were to be used to produce a single value coefficient-of-performance that would predict the performance of the fuel nozzles independent of system application. Several different types of fuel nozzles capable of handling multi-phase fuels have been characterized for: (a) fuel flow rate versus delivery pressure, (b) fuel-air ratio throughout the fuel spray or plume and the effective cone angle of the injector, and (c) fuel drop- or particle-size distribution as a function of fluid properties. Fuel nozzles which have been characterized on both single-phase liquids and multi-phase liquid-solid slurries include a variable-film-thickness nozzle, a commercial coal-water slurry (CWS) nozzle, and four diesel injectors of different geometries (tested on single-phase fluids only). Multi-phase mixtures includes CWS with various coal loadings, surfactant concentrations, and stabilizer concentrations, as well as glass-bead water slurries with stabilizing additives. Single-phase fluids included glycerol-water mixtures to vary the viscosity over a range of 1 to 1500 cP, and alcohol-water mixtures to vary the surface tension from about 22 to 73 dyne/cm. In addition, tests were performed to characterize straight-tube gas-solid nozzles using two differences size distributions of glass beads in air. Standardized procedures have been developed for processing measurements of spray drop-size characteristics and the overall cross-section average drop or particle size. 43 refs., 60 figs., 7 tabs.

Dodge, F.T.; Dodge, L.G.; Johnson, J.E.

1989-06-01T23:59:59.000Z

10

NOZZLE FUZZY CONTROLLER OF AGRICULTURAL SPRAYING ROBOT AIMING  

E-Print Network [OSTI]

spraying system with machine-vision guidance and adjust able yaw nozzles was studied by Giles D the shortcomings of existing nozzle control system, such as the long regulation time, the higher overshoot and so was designed as a 2- inputs&1-output closed-loop system. The inputs are the distance from nozzle to crop row

11

Fuel nozzle assembly  

DOE Patents [OSTI]

A fuel nozzle assembly is provided. The assembly includes an outer nozzle body having a first end and a second end and at least one inner nozzle tube having a first end and a second end. One of the nozzle body or nozzle tube includes a fuel plenum and a fuel passage extending therefrom, while the other of the nozzle body or nozzle tube includes a fuel injection hole slidably aligned with the fuel passage to form a fuel flow path therebetween at an interface between the body and the tube. The nozzle body and the nozzle tube are fixed against relative movement at the first ends of the nozzle body and nozzle tube, enabling the fuel flow path to close at the interface due to thermal growth after a flame enters the nozzle tube.

Johnson, Thomas Edward (Greer, SC); Ziminsky, Willy Steve (Simpsonville, SC); Lacey, Benjamin Paul (Greer, SC); York, William David (Greer, SC); Stevenson, Christian Xavier (Inman, SC)

2011-08-30T23:59:59.000Z

12

Nozzle airfoil having movable nozzle ribs  

DOE Patents [OSTI]

A nozzle vane or airfoil structure is provided in which the nozzle ribs are connected to the side walls of the vane or airfoil in such a way that the ribs provide the requisite mechanical support between the concave side and convex side of the airfoil but are not locked in the radial direction of the assembly, longitudinally of the airfoil. The ribs may be bi-cast onto a preformed airfoil side wall structure or fastened to the airfoil by an interlocking slide connection and/or welding. By attaching the nozzle ribs to the nozzle airfoil metal in such a way that allows play longitudinally of the airfoil, the temperature difference induced radial thermal stresses at the nozzle airfoil/rib joint area are reduced while maintaining proper mechanical support of the nozzle side walls.

Yu, Yufeng Phillip (Greenville, SC); Itzel, Gary Michael (Greenville, SC)

2002-01-01T23:59:59.000Z

13

NETL: Alstom's Chemical Looping Combustion Technology with CO2 Capture  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oxy-Combustion CO2 Emissions Control Oxy-Combustion CO2 Emissions Control Commercialization of the Iron Based Coal Direct Chemical Looping Process for Power Production with in situ CO2 Capture Project No.: DE-FE0009761 CDLC Process Concept CDLC Process Concept (click to enlarge) Babcock & Wilcox Power Generation Group (B&W) is developing the coal direct chemical looping (CDCL) process. The CDCL process consists of a unique moving bed reactor - the reducer - where pulverized coal is fully converted using iron-based oxygen carriers. The oxygen carrier is reduced from Fe2O3 to FeO/Fe and the flue gas is a concentrated stream of CO2 that is available for storage or beneficial use. The reduced FeO/Fe is oxidized to Fe2O3 using air in the combustor, liberating heat to produce steam for a

14

Methane Steam Reforming Thermally Coupled with Fuel Combustion: Application of Chemical Looping Concept as a Novel Technology  

Science Journals Connector (OSTI)

Methane Steam Reforming Thermally Coupled with Fuel Combustion: Application of Chemical Looping Concept as a Novel Technology ... One of these new methods is chemical looping combustion (CLC). ... Experimental Study of Chemical-Looping Reforming in a Fixed-Bed Reactor: Performance Investigation of Different Oxygen Carriers on Al2O3 and TiO2 Support ...

Mohammad Reza Rahimpour; Marziyeh Hesami; Majid Saidi; Abdolhossein Jahanmiri; Mahdi Farniaei; Mohsen Abbasi

2013-03-14T23:59:59.000Z

15

Anchoring protein crystals to mounting loops with hydrogel using inkjet technology  

Science Journals Connector (OSTI)

A method to fix protein crystals to mounting loops with hydro-gel using inkjet technology has been developed. The method allows soaking of the mounted crystals in ligand-containing solution and assists in the design of an automated drug-screening pipeline.

Shinoda, A.

2014-10-16T23:59:59.000Z

16

Strategic Need for Multi-Purpose Thermal Hydraulic Loop for Support of Advanced Reactor Technologies  

SciTech Connect (OSTI)

This report presents a conceptual design for a new high-temperature multi fluid, multi loop test facility for the INL to support thermal hydraulic, materials, and thermal energy storage research for nuclear and nuclear-hybrid applications. In its initial configuration, the facility will include a high-temperature helium loop, a liquid salt loop, and a hot water/steam loop. The three loops will be thermally coupled through an intermediate heat exchanger (IHX) and a secondary heat exchanger (SHX). Research topics to be addressed with this facility include the characterization and performance evaluation of candidate compact heat exchangers such as printed circuit heat exchangers (PCHEs) at prototypical operating conditions, flow and heat transfer issues related to core thermal hydraulics in advanced helium-cooled and salt-cooled reactors, and evaluation of corrosion behavior of new cladding materials and accident-tolerant fuels for LWRs at prototypical conditions. Based on its relevance to advanced reactor systems, the new facility has been named the Advanced Reactor Technology Integral System Test (ARTIST) facility. Research performed in this facility will advance the state of the art and technology readiness level of high temperature intermediate heat exchangers (IHXs) for nuclear applications while establishing the INL as a center of excellence for the development and certification of this technology. The thermal energy storage capability will support research and demonstration activities related to process heat delivery for a variety of hybrid energy systems and grid stabilization strategies. Experimental results obtained from this research will assist in development of reliable predictive models for thermal hydraulic design and safety codes over the range of expected advanced reactor operating conditions. Proposed/existing IHX heat transfer and friction correlations and criteria will be assessed with information on materials compatibility and instrumentation needs. The experimental database will guide development of appropriate predictive methods and be available for code verification and validation (V&V) related to these systems.

James E. O'Brien; Piyush Sabharwall; Su-Jong Yoon; Gregory K. Housley

2014-09-01T23:59:59.000Z

17

Turbine nozzle/nozzle support structure  

DOE Patents [OSTI]

An axial flow turbine`s nozzle/nozzle support structure is described having a cantilevered nozzle outer structure including an outer shroud and airfoil vanes extending radially inwardly therefrom, an inner shroud radially adjacent the inner end of the airfoil vanes and cooperatively disposed relative to the outer shroud to provide an annular fluid flow path, an inner and an outer support ring respectively arranged radially inside the inner shroud and axially adjacent a portion of the outer shroud, and pins extending through such portion and into the outer support ring. The inner support ring or inner shroud has a groove therein bounded by end walls for receiving and being axially abuttable with a locating projection from the adjacent airfoil vane, inner shroud, or inner support ring. The nozzle outer structure may comprise segments each of which has a single protrusion which is axially engageable with the outer support ring or, alternatively, a first and second protrusion which are arcuately and axially separated and which include axial openings therein whereby first and second protrusions on respective, arcuately adjacent nozzle segments have axial openings therein which are alignable with connector openings in the outer support ring and within each of such aligned openings a pin is receivable. The inner shroud may, likewise, comprise segments which, when assembled in operating configuration, have a 360 degree expanse. 6 figs.

Boyd, G.L.; Shaffer, J.E.

1997-01-07T23:59:59.000Z

18

Turbine nozzle/nozzle support structure  

DOE Patents [OSTI]

An axial flow turbine's nozzle/nozzle support structure having a cantilevered nozzle outer structure including an outer shroud and airfoil vanes extending radially inwardly therefrom, an inner shroud radially adjacent the inner end of the airfoil vanes and cooperatively disposed relative to the outer shroud to provide an annular fluid flow path, an inner and an outer support ring respectively arranged radially inside the inner shroud and axially adjacent a portion of the outer shroud, and pins extending through such portion and into the outer support ring. The inner support ring or inner shroud has a groove therein bounded by end walls for receiving and being axially abuttable with a locating projection from the adjacent airfoil vane, inner shroud, or inner support ring. The nozzle outer structure may comprise segments each of which has a single protrusion which is axially engageable with the outer support ring or, alternatively, a first and second protrusion which are arcuately and axially separated and which include axial openings therein whereby first and second protrusions on respective, arcuately adjacent nozzle segments have axial openings therein which are alignable with connector openings in the outer support ring and within each of such aligned openings a pin is receivable. The inner shroud may, likewise, comprise segments which, when assembled in operating configuration, have a 360 degree expanse.

Boyd, Gary L. (Alpine, CA); Shaffer, James E. (Maitland, FL)

1996-01-01T23:59:59.000Z

19

Turbine nozzle/nozzle support structure  

DOE Patents [OSTI]

An axial flow turbine's nozzle/nozzle support structure having a cantilevered nozzle outer structure including an outer shroud and airfoil vanes extending radially inwardly therefrom, an inner shroud radially adjacent the inner end of the airfoil vanes and cooperatively disposed relative to the outer shroud to provide an annular fluid flow path, an inner and an outer support ring respectively arranged radially inside the inner shroud and axially adjacent a portion of the outer shroud, and pins extending through such portion and into the outer support ring. The inner support ring or inner shroud has a groove therein bounded by end walls for receiving and being axially abuttable with a locating projection from the adjacent airfoil vane, inner shroud, or inner support ring. The nozzle outer structure may comprise segments each of which has a single protrusion which is axially engageable with the outer support ring or, alternatively, a first and second protrusion which are arcuately and axially separated and which include axial openings therein whereby first and second protrusions on respective, arcuately adjacent nozzle segments have axial openings therein which are alignable with connector openings in the outer support ring and within each of such aligned openings a pin is receivable. The inner shroud may, likewise, comprise segments which, when assembled in operating configuration, have a 360 degree expanse.

Boyd, Gary L. (Alpine, CA); Shaffer, James E. (Maitland, FL)

1997-01-01T23:59:59.000Z

20

Turbine nozzle/nozzle support structure  

DOE Patents [OSTI]

An axial flow turbine`s nozzle/nozzle support structure is described having a cantilevered nozzle outer structure including an outer shroud and airfoil vanes extending radially inwardly therefrom, an inner shroud radially adjacent the inner end of the airfoil vanes and cooperatively disposed relative to the outer shroud to provide an annular fluid flow path, an inner and an outer support ring respectively arranged radially inside the inner shroud and axially adjacent a portion of the outer shroud, and pins extending through such portion and into the outer support ring. The inner support ring or inner shroud has a groove therein bounded by end walls for receiving and being axially abuttable with a locating projection from the adjacent airfoil vane, inner shroud, or inner support ring. The nozzle outer structure may comprise segments each of which has a single protrusion which is axially engageable with the outer support ring or, alternatively, a first and second protrusion which are arcuately and axially separated and which include axial openings therein whereby first and second protrusions on respective, arcuately adjacent nozzle segments have axial openings therein which are alignable with connector openings in the outer support ring and within each of such aligned openings a pin is receivable. The inner shroud may, likewise, comprise segments which, when assembled in operating configuration, have a 360 degree expanse. 6 figs.

Boyd, G.L.; Shaffer, J.E.

1996-09-10T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Turbine nozzle/nozzle support structure  

DOE Patents [OSTI]

An axial flow turbine's nozzle/nozzle support structure having a cantilevered nozzle outer structure including an outer shroud and airfoil vanes extending radially inwardly therefrom, an inner shroud radially adjacent the inner end of the airfoil vanes and cooperatively disposed relative to the outer shroud to provide an annular fluid flow path, an inner and an outer support ring respectively arranged radially inside the inner shroud and axially adjacent a portion of the outer shroud, and pins extending through such portion and into the outer support ring. The inner support ring or inner shroud has a groove therein bounded by end walls for receiving and being axially abuttable with a locating projection from the adjacent airfoil vane, inner shroud, or inner support ring. The nozzle outer structure may comprise segments each of which has a single protrusion which is axially engageable with the outer support ring or, alternatively, a first and second protrusion which are arcuately and axially separated and which include axial openings therein whereby first and second protrusions on respective, arcuately adjacent nozzle segments have axial openings therein which are alignable with connector openings in the outer support ring and within each of such aligned openings a pin is receivable. The inner shroud may, likewise, comprise segments which, when assembled in operating configuration, have a 360 degree expanse.

Boyd, Gary L. (Alpine, CA); Shaffer, James E. (Maitland, FL)

1995-01-01T23:59:59.000Z

22

Nozzle for a turbomachine  

DOE Patents [OSTI]

A turbomachine includes a compressor, a combustor operatively connected to the compressor, and an injection nozzle operatively connected to the combustor. The injection nozzle includes a main body having a first end section that extends to a second end section to define an inner flow path. The injection nozzle further includes an outlet arranged at the second end section of the main body, at least one passage that extends within the main body and is fluidly connected to the outlet, and at least one conduit extending between the inner flow path and the at least one passage.

Lacy, Benjamin Paul; Kraemer, Gilbert Otto; Yilmaz, Ertan; Melton, Patrick Benedict

2012-10-30T23:59:59.000Z

23

Ceramic Cerami Turbine Nozzle  

DOE Patents [OSTI]

A turbine nozzle vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The metallic components having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the turbine nozzle vane assembly. The turbine nozzle vane assembly includes an outer shroud and an inner shroud having a plurality of horizontally segmented vanes therebetween being positioned by a connecting member positioning segmented vanes in functional relationship one to another. The turbine nozzle vane assembly provides an economical, reliable and effective ceramic component having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the other component.

Boyd, Gary L. (Alpine, CA)

1997-04-01T23:59:59.000Z

24

Ceramic turbine nozzle  

DOE Patents [OSTI]

A turbine nozzle and shroud assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The metallic components have a preestablished rate of thermal expansion greater than the preestablished rate of thermal expansion of the turbine nozzle vane assembly. The turbine nozzle vane assembly includes a plurality of segmented vane defining a first vane segment and a second vane segment, each of the first and second vane segments having a vertical portion, and each of the first vane segments and the second vane segments being positioned in functional relationship one to another within a recess formed within an outer shroud and an inner shroud. The turbine nozzle and shroud assembly provides an economical, reliable and effective ceramic component having a preestablished rate of thermal expansion being less than the preestablished rate of thermal expansion of the other component. 4 figs.

Shaffer, J.E.; Norton, P.F.

1996-12-17T23:59:59.000Z

25

Ceramic turbine nozzle  

DOE Patents [OSTI]

A turbine nozzle and shroud assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The metallic components having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the turbine nozzle vane assembly. The turbine nozzle vane assembly includes a plurality of segmented vane defining a first vane segment and a second vane segment. Each of the first and second vane segments having a vertical portion. Each of the first vane segments and the second vane segments being positioned in functional relationship one to another within a recess formed within an outer shroud and an inner shroud. The turbine nozzle and shroud assembly provides an economical, reliable and effective ceramic component having a preestablished rate of thermal expansion being less than the preestablished rate of thermal expansion of the other component.

Shaffer, James E. (Maitland, FL); Norton, Paul F. (San Diego, CA)

1996-01-01T23:59:59.000Z

26

Metal atomization spray nozzle  

DOE Patents [OSTI]

A spray nozzle for a magnetohydrodynamic atomization apparatus has a feed passage for molten metal and a pair of spray electrodes mounted in the feed passage. The electrodes, diverging surfaces which define a nozzle throat and diverge at an acute angle from the throat. Current passes through molten metal when fed through the throat which creates the Lorentz force necessary to provide atomization of the molten metal. 6 figures.

Huxford, T.J.

1993-11-16T23:59:59.000Z

27

Atomizing nozzle and process  

DOE Patents [OSTI]

High pressure atomizing nozzle includes a high pressure gas manifold having a divergent expansion chamber between a gas inlet and arcuate manifold segment to minimize standing shock wave patterns in the manifold and thereby improve filling of the manifold with high pressure gas for improved melt atomization. The atomizing nozzle is especially useful in atomizing rare earth-transition metal alloys to form fine powder particles wherein a majority of the powder particles exhibit particle sizes having near-optimum magnetic properties.

Anderson, I.E.; Figliola, R.S.; Molnar, H.M.

1993-07-20T23:59:59.000Z

28

Turbine nozzle attachment system  

DOE Patents [OSTI]

A nozzle guide vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and is attached to conventional metallic components. The nozzle guide vane assembly includes a pair of legs extending radially outwardly from an outer shroud and a pair of mounting legs extending radially inwardly from an inner shroud. Each of the pair of legs and mounting legs have a pair of holes therein. A plurality of members attached to the gas turbine engine have a plurality of bores therein which axially align with corresponding ones of the pair of holes in the legs. A plurality of pins are positioned within the corresponding holes and bores radially positioning the nozzle guide vane assembly about a central axis of the gas turbine engine. 3 figs.

Norton, P.F.; Shaffer, J.E.

1995-10-24T23:59:59.000Z

29

Oil burner nozzle  

DOE Patents [OSTI]

An oil burner nozzle for use with liquid fuels and solid-containing liquid fuels. The nozzle comprises a fuel-carrying pipe, a barrel concentrically disposed about the pipe, and an outer sleeve retaining member for the barrel. An atomizing vapor passes along an axial passageway in the barrel, through a bore in the barrel and then along the outer surface of the front portion of the barrel. The atomizing vapor is directed by the outer sleeve across the path of the fuel as it emerges from the barrel. The fuel is atomized and may then be ignited.

Wright, Donald G. (Rockville Center, NY)

1982-01-01T23:59:59.000Z

30

Premixed direct injection nozzle  

DOE Patents [OSTI]

An injection nozzle having a main body portion with an outer peripheral wall is disclosed. The nozzle includes a plurality of fuel/air mixing tubes disposed within the main body portion and a fuel flow passage fluidly connected to the plurality of fuel/air mixing tubes. Fuel and air are partially premixed inside the plurality of the tubes. A second body portion, having an outer peripheral wall extending between a first end and an opposite second end, is connected to the main body portion. The partially premixed fuel and air mixture from the first body portion gets further mixed inside the second body portion. The second body portion converges from the first end toward said second end. The second body portion also includes cooling passages that extend along all the walls around the second body to provide thermal damage resistance for occasional flame flash back into the second body.

Zuo, Baifang (Simpsonville, SC); Johnson, Thomas Edward (Greer, SC); Lacy, Benjamin Paul (Greer, SC); Ziminsky, Willy Steve (Simpsonville, SC)

2011-02-15T23:59:59.000Z

31

Stability and Mixing Characterization of Industrial Lean Premixed Nozzles  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Mixing Characterization of and Mixing Characterization of Industrial Lean Premixed Nozzles * Unique research capabilities have been developed for the study of fuel mixing and combustion instabilities in lean premixed combustors. * These capabilities have been used to characterize the performance of industrial lean premixed nozzles for Solar Turbines, United Technologies and General Electric. * This information has been used by the gas turbine manufacturers to gain understanding and new insights for the development of stable low emissions lean premixed combustors. Cooling ring Solar Turbines Centaur 50 Nozzle Stainless steel exhaust Fused silica combustor Photo of Stable Flame Photo of Unstable Flame InAs Detector HeNe Laser (3.39 μm) InAs Detector Centaur 50 Nozzle Measurement of equivalence ratio

32

Injection nozzle for a turbomachine  

DOE Patents [OSTI]

A turbomachine includes a compressor, a combustor operatively connected to the compressor, an end cover mounted to the combustor, and an injection nozzle assembly operatively connected to the combustor. The injection nozzle assembly includes a first end portion that extends to a second end portion, and a plurality of tube elements provided at the second end portion. Each of the plurality of tube elements defining a fluid passage includes a body having a first end section that extends to a second end section. The second end section projects beyond the second end portion of the injection nozzle assembly.

Uhm, Jong Ho; Johnson, Thomas Edward; Kim, Kwanwoo

2012-09-11T23:59:59.000Z

33

Airfoil nozzle and shroud assembly  

DOE Patents [OSTI]

An airfoil and nozzle assembly including an outer shroud having a plurality of vane members attached to an inner surface and having a cantilevered end. The assembly further includes a inner shroud being formed by a plurality of segments. Each of the segments having a first end and a second end and having a recess positioned in each of the ends. The cantilevered end of the vane member being positioned in the recess. The airfoil and nozzle assembly being made from a material having a lower rate of thermal expansion than that of the components to which the airfoil and nozzle assembly is attached.

Shaffer, James E. (Maitland, FL); Norton, Paul F. (San Diego, CA)

1997-01-01T23:59:59.000Z

34

Airfoil nozzle and shroud assembly  

DOE Patents [OSTI]

An airfoil and nozzle assembly are disclosed including an outer shroud having a plurality of vane members attached to an inner surface and having a cantilevered end. The assembly further includes a inner shroud being formed by a plurality of segments. Each of the segments having a first end and a second end and having a recess positioned in each of the ends. The cantilevered end of the vane member being positioned in the recess. The airfoil and nozzle assembly being made from a material having a lower rate of thermal expansion than that of the components to which the airfoil and nozzle assembly is attached. 5 figs.

Shaffer, J.E.; Norton, P.F.

1997-06-03T23:59:59.000Z

35

Hook nozzle arrangement for supporting airfoil vanes  

DOE Patents [OSTI]

A gas turbine engine's nozzle structure includes a nozzle support ring, a plurality of shroud segments, and a plurality of airfoil vanes. The plurality of shroud segments are distributed around the nozzle support ring. Each airfoil vane is connected to a corresponding shroud segment so that the airfoil vanes are also distributed around the nozzle support ring. Each shroud segment has a hook engaging the nozzle support ring so that the shroud segments and corresponding airfoil vanes are supported by the nozzle support ring. The nozzle support ring, the shroud segments, and the airfoil vanes may be ceramic.

Shaffer, James E. (Maitland, FL); Norton, Paul F. (San Diego, CA)

1996-01-01T23:59:59.000Z

36

Thermal analysis for axisymmetric nozzles  

E-Print Network [OSTI]

~ ANALYSIS FOR AXISYMMETRIC NOZZLES A Theseus by Ronald Wil burn Holder Submitted *o the Graduate College of the Texas A&M Unrverszty in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE January 1&48 Ma, jor... Subdect: Mechanical Engxneering ~ ANALYSIS FOR AXISYMMETRIC NOZZLES A Thesis by Ronald Wrlburn Holder Approved as to style and content by: Chairman of Committee Member l I c'c I 1 L. (Head of Department) (Member) January 1ROR 11 ACKNOWLEDGMENTS...

Holder, Ronald Wilburn

2012-06-07T23:59:59.000Z

37

Chemical Looping Combustion  

Science Journals Connector (OSTI)

Chemical looping combustion (CLC) and looping cycles in general represent an important new ... technologies, which can be deployed for direct combustion as well as be used in gasification...2...stream suitable fo...

Edward John (Ben) Anthony

2012-01-01T23:59:59.000Z

38

Neutrino Factory Mercury Flow Loop  

E-Print Network [OSTI]

Neutrino Factory Mercury Flow Loop V. GravesV. Graves C. Caldwell IDS-NF Videoconference March 9, 2010 #12;Flow Loop Review · 1 cm dia nozzle, 20 m/s jet requires 1.57 liter/sec mercury flow (94 2 liter/min 24 9 gpm)mercury flow (94.2 liter/min, 24.9 gpm). · MERIT experiment showed that a pump

McDonald, Kirk

39

Fast flux locked loop  

DOE Patents [OSTI]

A flux locked loop for providing an electrical feedback signal, the flux locked loop employing radio-frequency components and technology to extend the flux modulation frequency and tracking loop bandwidth. The flux locked loop of the present invention has particularly useful application in read-out electronics for DC SQUID magnetic measurement systems, in which case the electrical signal output by the flux locked loop represents an unknown magnetic flux applied to the DC SQUID.

Ganther, Jr., Kenneth R. (Olathe, KS); Snapp, Lowell D. (Independence, MO)

2002-09-10T23:59:59.000Z

40

Development of Dual-Air-Assistant Atomizing Nozzle to Apply Aerosol-Sealing  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Development of Dual-Air-Assistant Atomizing Nozzle to Apply Aerosol-Sealing Development of Dual-Air-Assistant Atomizing Nozzle to Apply Aerosol-Sealing Technology in Air Duct Systems Speaker(s): Alan Ropers Date: July 8, 2002 - 12:00pm Location: Bldg. 90 An Aerosol-sealing Technology was developed by LBNL to seal leaks in Air Duct Systems (ADS). The firm AEROSEAL already commercializes this technology for residential ADS. The current goal of our research at the Laboratory is to apply this technology to large commercial ADS. That means to develop a new kind of injector called "Compact Injector". So far, the injector that is used is a nozzle from the Schlick-Dusen firm. Results in terms of sealing rate are satisfactory, but this nozzle quickly clogs up with sealant particles. There are two reasons for the clogging problem: the

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Closing the loop : improving technology transfer by learning from the past  

E-Print Network [OSTI]

Technology transfer is a significant challenge within the highly regulated pharmaceutical industry. While much focus is put on the logistics and strategy of the process, less attention has been paid to how to change the ...

Witinski, Paul (Paul F.)

2010-01-01T23:59:59.000Z

42

Nozzle for electric dispersion reactor  

DOE Patents [OSTI]

A nozzle for an electric dispersion reactor includes two concentric electrodes, the inner one of the two delivering disperse phase fluid into a continuous phase fluid. A potential difference generated by a voltage source creates a dispersing electric field at the end of the inner electrode.

Sisson, Warren G. (Oak Ridge, TN); Basaran, Osman A. (Oak Ridge, TN); Harris, Michael T. (Knoxville, TN)

1998-01-01T23:59:59.000Z

43

Nozzle for electric dispersion reactor  

DOE Patents [OSTI]

A nozzle for an electric dispersion reactor includes two concentric electrodes, the inner one of the two delivering disperse phase fluid into a continuous phase fluid. A potential difference generated by a voltage source creates a dispersing electric field at the end of the inner electrode. 4 figs.

Sisson, W.G.; Basaran, O.A.; Harris, M.T.

1998-04-14T23:59:59.000Z

44

Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling...  

Broader source: Energy.gov (indexed) [DOE]

Spray, Combustion, & Emission Modeling using KH-ACT Primary Breakup Model & Detailed Chemistry Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling using KH-ACT Primary...

45

A new true RMS-to-DC converter using up-down translinear loop in CMOS technology  

Science Journals Connector (OSTI)

In this paper a new true current-mode RMS-to-DC converter circuit based on a square-root-domain squarer/divider and simplified current-mode low pass filter is presented. The circuit is designed by employing up-down translinear loop and using of MOSFET ... Keywords: Converter, Current-mode, Low-pass filter, RMS-to-DC, Translinear loop

E. Farshidi; H. Asiaban

2012-03-01T23:59:59.000Z

46

Tanana Loop Tanana Loop  

E-Print Network [OSTI]

Cooperative Extension Service Hutchison Institute of Technology West Valley High School Constitution Hall 1

Wagner, Diane

47

flow_loop.indd  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

FLOW ASSURANCE TEST LOOP FLOW ASSURANCE TEST LOOP Objective O ver a decade ago, RMOTC began cooperatively building a full-scale facility to test new fl ow assurance technology, mainly in the areas of hydrates and paraffi ns. Today, RMOTC's test facility consists of fi ve individual loop sections, including chilling and heated pipe-in-pipe water sections, bare lines, and a mixing section. The facility was designed to represent typical deepwater production systems in order to simulate full-scale tests and apply the results to fl ow assurance fi eld applications and technology. The current facility design consists of a 6" x 3,600 maximum allowable operating pressure test pipeline in fi ve separate loops. The test loops begin and ter- minate at a central location just north

48

Turbine nozzle stage having thermocouple guide tube  

DOE Patents [OSTI]

A guide tube is fixed adjacent opposite ends in outer and inner covers of a nozzle stage segment. The guide tube is serpentine in shape between the outer and inner covers and extends through a nozzle vane. An insert is disposed in the nozzle vane and has apertures to accommodate serpentine portions of the guide tube. Cooling steam is also supplied through chambers of the insert on opposite sides of a central insert chamber containing the guide tube. The opposite ends of the guide tube are fixed to sleeves, in turn fixed to the outer and inner covers.

Schotsch, Margaret Jones (Greer, SC); Kirkpatrick, Francis Lawrence (late of Galway, NY); Lapine, Eric Michael (Northwood, NH)

2002-01-01T23:59:59.000Z

49

6/10/12 Ultrasonic nozzle promises better cleaning with less water 1/6www.gizmag.com/ultrasonic-water-cleaning-nozzle/20491/  

E-Print Network [OSTI]

. Because the nozzle works with cold water, energy that would otherwise go into the heating of water is also Google's Trekker brings Street View to hiking trails The biggest surprises of E3 2012 Tactus Technology.LifeIonizers.co.uk/Alkaline Restore pH and Neutralize Acidity In Your Body with Alkaline Water. Water System Cleaning

Sóbester, András

50

Modeling deposit formation in diesel injector nozzle  

E-Print Network [OSTI]

Formation of deposit in the diesel injector nozzle affects the injection behavior and hinders performance. Under running condition, deposit precursors are washed away by the ensuing injection. However, during the cool down ...

Sudhiesh Kumar, Chintoo

2009-01-01T23:59:59.000Z

51

Multidisciplinary Approach to Aerospike Nozzle Design  

Science Journals Connector (OSTI)

A model of a linear aerospike rocket nozzle that consists of coupled aerodynamic and structural analyses has been developed. A nonlinear computational fluid dynamics code is used to calculate the aerodynamic thrust, and a three-dimensional finite-element ...

Korte J. J.; Salas A. O.; Dunn H. J.; Alexandrov N.; Follett W.; Orient G.; Hadid A.

1997-02-01T23:59:59.000Z

52

Nozzle and shroud assembly mounting structure  

DOE Patents [OSTI]

The present nozzle and shroud assembly mounting structure configuration increases component life and reduces maintenance by reducing internal stress between the mounting structure having a preestablished rate of thermal expansion and the nozzle and shroud assembly having a preestablished rate of thermal expansion being less than that of the mounting structure. The mounting structure includes an outer sealing portion forming a cradling member in which an annular ring member is slidably positioned. The mounting structure further includes an inner mounting portion to which a hooked end of the nozzle and shroud assembly is attached. As the inner mounting portion expands and contracts, the nozzle and shroud assembly slidably moves within the outer sealing portion.

Faulder, Leslie J. (San Diego, CA); Frey, deceased, Gary A. (late of Seattle, WA); Nielsen, Engward W. (El Cajon, CA); Ridler, Kenneth J. (San Diego, CA)

1997-01-01T23:59:59.000Z

53

Low thermal stress ceramic turbine nozzle  

DOE Patents [OSTI]

A turbine nozzle vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The metallic components having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the turbine nozzle vane assembly. The turbine nozzle vane assembly includes an outer shroud and an inner shroud having a plurality of vanes therebetween. Each of the plurality of vanes have a device for heating and cooling a portion of each of the plurality of vanes. Furthermore, the inner shroud has a plurality of bosses attached thereto. A cylindrical member has a plurality of grooves formed therein and each of the plurality of bosses are positioned in corresponding ones of the plurality of grooves. The turbine nozzle vane assembly provides an economical, reliable and effective ceramic component having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the other component.

Glezer, Boris (Del Mar, CA); Bagheri, Hamid (San Diego, CA); Fierstein, Aaron R. (San Diego, CA)

1996-01-01T23:59:59.000Z

54

Nozzle and shroud assembly mounting structure  

DOE Patents [OSTI]

The present nozzle and shroud assembly mounting structure configuration increases component life and reduces maintenance by reducing internal stress between the mounting structure having a preestablished rate of thermal expansion and the nozzle and shroud assembly having a preestablished rate of thermal expansion being less than that of the mounting structure. The mounting structure includes an outer sealing portion forming a cradling member in which an annular ring member is slidably positioned. The mounting structure further includes an inner mounting portion to which a hooked end of the nozzle and shroud assembly is attached. As the inner mounting portion expands and contracts, the nozzle and shroud assembly slidably moves within the outer sealing portion. 3 figs.

Faulder, L.J.; Frey, G.A.; Nielsen, E.W.; Ridler, K.J.

1997-08-05T23:59:59.000Z

55

Drying characteristics of slot jet reattachment nozzle and comparison with a slot jet nozzle  

E-Print Network [OSTI]

the same flow power and flow exerted surface peak pressure. The same flow power results showed that +45[] and +20[] SJR nozzles performed better than the slot jet nozzle, while the 0[] SJR had drying characteristics similar to the slot jet. The slot jet...

Alam, Syed Aftab

2012-06-07T23:59:59.000Z

56

Nozzle assembly for an earth boring drill bit  

SciTech Connect (OSTI)

A nozzle assembly for an earth boring drill bit of the type adapted to receive drilling fluid under pressure and having a nozzle bore in the bottom thereof positioned closely adjacent the well bore bottom when the bit is in engagement therewith with the bore having inner and outer portions. The nozzle assembly comprises a generally cylindrical nozzle member of abrasion and erosion resistant material, selected from a plurality of such members, each being of the same outer diameter but having passaging therein of different cross-sectional area. The nozzle member is adapted to be fitted in the inner portion of the nozzle bore in sealing relationship therewith for forming a first seal for the nozzle assembly. The nozzle assembly further comprises a locknut, separate from the nozzle member, for detachbably securing the nozzle member in the nozzle bore, formed at least in part of an abrasion and erosion resistant material. The locknut has a threaded side wall engageable with the outer portion of the nozzle bore, and an aperture therethrough for enabling a stream of drilling fluid from the nozzle member to flow therethrough and being so configured in section as to receive a tool for turning the lockout to install it in and remove it from the nozzle bore.

Madigan, J. A.

1985-09-24T23:59:59.000Z

57

Vehicle Technologies Office Merit Review 2014: Integrated Vehicle Thermal Management Combining Fluid Loops in Electric Drive Vehicles  

Broader source: Energy.gov [DOE]

Presentation given by National Renewable Energy Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about...

58

Turbocharger with variable nozzle having vane sealing surfaces  

DOE Patents [OSTI]

A variable nozzle for a turbocharger includes a plurality of vanes rotatably mounted on a nozzle ring and disposed in a nozzle flow path defined between the nozzle ring and an opposite nozzle wall. Either or both of the faces of the nozzle ring and nozzle wall include(s) at least one step that defines sealing surfaces positioned to be substantially abutted by airfoil surfaces of the vanes in the closed position of the vanes and to be spaced from the airfoil surfaces in positions other than the closed position. This substantial abutment between the airfoil surfaces and the sealing surfaces serves to substantially prevent exhaust gas from leaking past the ends of the airfoil portions. At the same time, clearances between the nozzle ring face and the end faces of the airfoil portions can be sufficiently large to prevent binding of the vanes under all operating conditions.

Arnold, Philippe (Hennecourt, FR); Petitjean, Dominique (Julienrupt, FR); Ruquart, Anthony (Thaon les Vosges, FR); Dupont, Guillaume (Thaon les Vosges, FR); Jeckel, Denis (Thaon les Vosges, FR)

2011-11-15T23:59:59.000Z

59

Experience in the repair of steam generator auxiliary feedwater nozzle  

SciTech Connect (OSTI)

The auxiliary feedwater nozzle is quite often subjected to more thermal stress cycles and other loading mechanisms during their service life than the material was designed and fabricated for at the nozzle of the earlier steam generators in many nuclear plants. During plant operation, the auxiliary feedwater nozzle outlet is exposed to the hot steam from the generator side, while the auxiliary feedwater piping which contains subcooled water from the inlet often induces water hammer as a result of the steam-water mixing phenomena. The thermal cycles and the steam bubble collapse at the nozzle may cause cracking in the nozzle liner and interior surface of the nozzle, and subsequently results in structural damage to the steam generator. This presentation is intended to share the lessons learned from the evaluation of the nozzle condition and the subsequent modification and repair made to the auxiliary feedwater nozzle at the Palisades Nuclear Plant. Other nuclear plant owners may benefit from this experience.

Chao, K.K.N. [Consumers Power Co., Jackson, MI (United States)

1996-12-01T23:59:59.000Z

60

Low thermal stress ceramic turbine nozzle  

DOE Patents [OSTI]

A turbine nozzle vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and is attached to conventional metallic components, the metallic components having a preestablished rate of thermal expansion greater than the preestablished rate of thermal expansion of the turbine nozzle vane assembly. The turbine nozzle vane assembly includes an outer shroud and an inner shroud having a plurality of vanes there between. Each of the plurality of vanes have a device for heating and cooling a portion of each of the plurality of vanes. Furthermore, the inner shroud has a plurality of bosses attached thereto. A cylindrical member has a plurality of grooves formed therein and each of the plurality of bosses are positioned in corresponding ones of the plurality of grooves. The turbine nozzle vane assembly provides an economical, reliable and effective ceramic component having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the other component. 4 figs.

Glezer, B.; Bagheri, H.; Fierstein, A.R.

1996-02-27T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Chemical Looping Air Separation Unit and Methods of Use  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Looping Air Separation Unit and Methods of Use Looping Air Separation Unit and Methods of Use Contact NETL Technology Transfer Group techtransfer@netl.doe.gov October 2012 Opportunity Research is currently active on the patent-pending technology "Chemical Looping Air Separation Unit and Methods of Use" that combines the best attributes of chemical looping and oxy-fuel combustion technologies. Following patent approval, the technology will be available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory. Significance * Combines chemical looping and oxy-fuel technologies * Separates oxygen from air at high efficiencies * Removes CO

62

Pressurizer with a mechanically attached surge nozzle thermal sleeve  

DOE Patents [OSTI]

A thermal sleeve is mechanically attached to the bore of a surge nozzle of a pressurizer for the primary circuit of a pressurized water reactor steam generating system. The thermal sleeve is attached with a series of keys and slots which maintain the thermal sleeve centered in the nozzle while permitting thermal growth and restricting flow between the sleeve and the interior wall of the nozzle.

Wepfer, Robert M

2014-03-25T23:59:59.000Z

63

Mounting apparatus for a nozzle guide vane assembly  

DOE Patents [OSTI]

The present invention provides a ceramic nozzle guide assembly with an apparatus for mounting it to a metal nozzle case that includes an intermediate ceramic mounting ring. The mounting ring includes a plurality of projections that are received within a plurality of receptacles formed in the nozzle case. The projections of the mounting ring are secured within the receptacles by a ceramic retainer that allows contact between the two components only along arcuate surfaces thus eliminating sliding contact between the components. 8 figs.

Boyd, G.L.; Shaffer, J.E.

1995-09-12T23:59:59.000Z

64

Mounting apparatus for a nozzle guide vane assembly  

DOE Patents [OSTI]

The present invention provides a ceramic nozzle guide assembly with an apparatus for mounting it to a metal nozzle case that includes an intermediate ceramic mounting ring. The mounting ring includes a plurality of projections that are received within a plurality of receptacles formed in the nozzle case. The projections of the mounting ring are secured within the receptacles by a ceramic retainer that allows contact between the two components only along arcuate surfaces thus eliminating sliding contact between the components.

Boyd, Gary L. (Alpine, CA); Shaffer, James E. (Maitland, FL)

1995-01-01T23:59:59.000Z

65

Two linear slot nozzle virtual impactors for concentration of bioaerosols  

E-Print Network [OSTI]

.008?). Optical and physical measurements were made of the nozzle dimensions in the critical region of the virtual impactor units. For the LSVI units the misalignment between the acceleration nozzle and the receiver nozzle was measured between 6 ? m (0....00025?) and 29 ? m (0.00114?). This represented a range of 2% to 10% misalignment relative to the acceleration nozzle width. The CSVI Unit 1 and 2 misalignments were measured to be 15 ? m (0.00061?) and 9 ? m (0.00036?), or 10% and 1.8% relative misalignment...

Haglund, John Steven

2005-02-17T23:59:59.000Z

66

Airfoil shape for a turbine nozzle  

DOE Patents [OSTI]

A first-stage nozzle vane includes an airfoil having a profile according to Table I. The annulus profile of the hot gas path is defined in conjunction with the airfoil profile and the profile of the inner and outer walls by the Cartesian coordinate values given in Tables I and II, respectively. The airfoil is a three-dimensional bowed design, both in the airfoil body and in the trailing edge. The airfoil is steam and air-cooled by flowing cooling mediums through cavities extending in the vane between inner and outer walls.

Burdgick, Steven Sebastian (Schenectady, NY); Patik, Joseph Francis (Cohoes, NY); Itzel, Gary Michael (Simpsonville, SC)

2002-01-01T23:59:59.000Z

67

Loop-to-loop coupling.  

SciTech Connect (OSTI)

This report estimates inductively-coupled energy to a low-impedance load in a loop-to-loop arrangement. Both analytical models and full-wave numerical simulations are used and the resulting fields, coupled powers and energies are compared. The energies are simply estimated from the coupled powers through approximations to the energy theorem. The transmitter loop is taken to be either a circular geometry or a rectangular-loop (stripline-type) geometry that was used in an experimental setup. Simple magnetic field models are constructed and used to estimate the mutual inductance to the receiving loop, which is taken to be circular with one or several turns. Circuit elements are estimated and used to determine the coupled current and power (an equivalent antenna picture is also given). These results are compared to an electromagnetic simulation of the transmitter geometry. Simple approximate relations are also given to estimate coupled energy from the power. The effect of additional loads in the form of attached leads, forming transmission lines, are considered. The results are summarized in a set of susceptibility-type curves. Finally, we also consider drives to the cables themselves and the resulting common-to-differential mode currents in the load.

Warne, Larry Kevin; Lucero, Larry Martin; Langston, William L.; Salazar, Robert Austin; Coleman, Phillip Dale; Basilio, Lorena I.; Bacon, Larry Donald

2012-05-01T23:59:59.000Z

68

Nanostructured Oxygen Carriers for Chemical Looping Combustion and Chemical Looping Hydrogen Production.  

E-Print Network [OSTI]

??Chemical looping combustion (CLC) is an emerging technology for clean energy-production. In CLC, an oxygen carrier is periodically oxidized with air and then reduced in (more)

Solunke, Rahul Dushyantrao

2011-01-01T23:59:59.000Z

69

Chemical Looping | Open Energy Information  

Open Energy Info (EERE)

Looping Looping Jump to: navigation, search Contents 1 Introduction 2 Process Description 3 Benefits 4 Oxygen Carriers 5 Multimedia 6 Patents 7 References 8 External Links Introduction Chemical looping or chemical looping combustion (CLC) is a novel technology that could provide the means to convert fossil fuels to electricity and provide carbon capture without significant efficiency or cost penalties. Chemical looping combustion is very similar to oxy-fuel combustion where there is no direct contact between air and fuel.[1] Oxygen is extracted from air, then the oxygen is reacted with the hydrocarbon fuel producing an exhaust gas composed of carbon dioxide and water vapor.[2] The water vapor is condensed out of the gas resulting in near 100% carbon dioxide stream that could be sequestered in the ground.

70

X-Ray Characterization of Diesel Sprays and the Effects of Nozzle...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Sprays and the Effects of Nozzle Geometry X-Ray Characterization of Diesel Sprays and the Effects of Nozzle Geometry 2004 Diesel Engine Emissions Reduction (DEER) Conference...

71

Development of a nozzle for underwater laser beam welds  

SciTech Connect (OSTI)

The present study describes the work carried out to develop a nozzle for the welding or treatment of surfaces of components underwater. Two different types of nozzles have been investigated: contactless and sealed. With the former a dry working zone could only be achieved at very high gas flow and at a maximum extension of 2--3mm. The nozzles based on the labyrinth sealing concept were capable of producing and maintaining a dry working zone with acceptable gas flow and an extension range of 4mm. In the development of this nozzle the following factors have been considered: number of rubber layers, included angle of the sealing, quantity, position and diameter of the gas outlets and the extension range. The underwater nozzle developed in the course of this work has been successfully tested in a simulated patch welding repair of a stainless steel pipe at 3m water depth.

Habenicht, I.; Santos, J.F. dos; Szelagowski, P. [GKSS Forschungszentrum Geesthacht GmbH (Germany); Franz, T. [Bremen Inst. for Applied Beam Technology (Germany)

1996-12-01T23:59:59.000Z

72

Comparison of heat transfer characteristics of axisymmetric and two dimensional reattachment jet nozzles to conventional jet impingement nozzles  

E-Print Network [OSTI]

characteristics of turbulent, submerged ILJ and RJR nozzles under constant fluid flow power and under matched peak pressure exerted on the impingement surface. Air was used as the working fluid. The RJR nozzles with exit angles of O[] and +45[] were found...

Narayanan, Vinod

2012-06-07T23:59:59.000Z

73

Technology Transfer: Available Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

test test Please refer to the list of technologies below for licensing and research collaboration availability. If you can't find the technology you're interested in, please contact us at TTD@lbl.gov. Energy ENERGY EFFICIENT TECHNOLOGIES Aerosol Sealing Aerosol Remote Sealing System Clog-free Atomizing and Spray Drying Nozzle Air-stable Nanomaterials for Efficient OLEDs Solvent Processed Nanotube Composites OLEDS with Air-stable Structured Electrodes APIs for Online Energy Saving Tools: Home Energy Saver and EnergyIQ Carbon Dioxide Capture at a Reduced Cost Dynamic Solar Glare Blocking System Electrochromic Device Controlled by Sunlight Electrochromic Windows with Multiple-Cavity Optical Bandpass Filter Electrochromic Window Technology Portfolio Universal Electrochromic Smart Window Coating

74

Natural Ores as Oxygen Carriers in Chemical Looping Combustion  

Science Journals Connector (OSTI)

Natural Ores as Oxygen Carriers in Chemical Looping Combustion ... Chemical looping combustion (CLC) is a combustion technology that utilizes oxygen from oxygen carriers (OC), such as metal oxides, instead of air to combust fuels. ...

Hanjing Tian; Ranjani Siriwardane; Thomas Simonyi; James Poston

2013-01-02T23:59:59.000Z

75

High Energy Absorption Top Nozzle For A Nuclaer Fuel Assembly  

DOE Patents [OSTI]

A high energy absorption top nozzle for a nuclear fuel assembly that employs an elongated upper tubular housing and an elongated lower tubular housing slidable within the upper tubular housing. The upper and lower housings are biased away from each other by a plurality of longitudinally extending springs that are restrained by a longitudinally moveable piston whose upward travel is limited within the upper housing. The energy imparted to the nozzle by a control rod scram is mostly absorbed by the springs and the hydraulic affect of the piston within the nozzle.

Sparrow, James A. (Irmo, SC); Aleshin, Yuriy (Columbia, SC); Slyeptsov, Aleksey (Columbia, SC)

2004-05-18T23:59:59.000Z

76

Chemical Looping for Combustion and Hydrogen Production  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ChemiCal looping for Combustion and ChemiCal looping for Combustion and hydrogen produCtion Objective The objective of this project is to determine the benefits of chemical looping technology used with coal to reduce CO 2 emissions. Background Chemical looping is a new method to convert coal or gasified coal to energy. In chemical looping, there is no direct contact between air and fuel. The chemical looping process utilizes oxygen from metal oxide oxygen carrier for fuel combustion, or for making hydrogen by "reducing" water. In combustion applications, the products of chemical looping are CO 2 and H 2 O. Thus, once the steam is condensed, a relatively pure stream of CO 2 is produced ready for sequestration. The production of a sequestration ready CO 2 stream does not require any additional separation units

77

Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

Looping Technology Description: Amine scrubbing carboncarbon capture using absorption technologies Calera process CO 2 sequestration in concrete curing technology Carbonate looping

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

78

Resistive MHD Simulations of Laminar Round Jets with Application to Magnetic Nozzle Flows  

E-Print Network [OSTI]

of simulating magnetic nozzle flows and other plasmas that cannot be easily replicated in ground facilities....

Araya, Daniel

2012-02-14T23:59:59.000Z

79

PJM Controller Testing with Prototypic PJM Nozzle Configuration  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) Office of River Protections Waste Treatment Plant (WTP) is being designed and built to pre-treat and then vitrify a large portion of the wastes in Hanfords 177 underground waste storage tanks. The WTP consists of three primary facilitiespretreatment, low-activity waste (LAW) vitrification, and high-level waste (HLW) vitrification. The pretreatment facility will receive waste piped from the Hanford tank farms and separate it into a high-volume, low-activity liquid stream stripped of most solids and radionuclides and a much smaller volume of HLW slurry containing most of the solids and most of the radioactivity. Many of the vessels in the pretreatment facility will contain pulse jet mixers (PJM) that will provide some or all of the mixing in the vessels. Pulse jet mixer technology was selected for use in black cell regions of the WTP, where maintenance cannot be performed once hot testing and operations commence. The PJMs have no moving mechanical parts that require maintenance. The vessels with the most concentrated slurries will also be mixed with air spargers and/or steady jets in addition to the mixing provided by the PJMs. Pulse jet mixers are susceptible to overblows that can generate large hydrodynamic forces, forces that can damage mixing vessels or their internal parts. The probability of an overblow increases if a PJM does not fill completely. The purpose of the testing performed for this report was to determine how reliable and repeatable the primary and safety (or backup) PJM control systems are at detecting drive overblows (DOB) and charge vessel full (CVF) conditions. Testing was performed on the ABB 800xA and Triconex control systems. The controllers operated an array of four PJMs installed in an approximately 13 ft diameter 15 ft tall tank located in the high bay of the Pacific Northwest National Laboratory (PNNL) 336 Building test facility. The PJMs were fitted with 4 inch diameter discharge nozzles representative of the nozzles to be used in the WTP. This work supplemented earlier controller tests done on PJMs with 2 inch nozzles (Bontha et al. 2007). Those earlier tests enabled the selection of appropriate pressure transmitters with associated piping and resulted in an alternate overblow detection algorithm that uses data from pressure transmitters mounted in a water flush line on the PJM airlines. Much of that earlier work was only qualitative, however, due to a data logger equipment failure that occurred during the 2007 testing. The objectives of the current work focused on providing quantitative determinations of the ability of the BNI controllers to detect DOB and CVF conditions. On both control systems, a DOB or CVF is indicated when the values of particular internal functions, called confidence values, cross predetermined thresholds. There are two types of confidence values; one based on a transformation of jet pump pair (JPP) drive and suction pressures, the other based on the pressure in the flush line. In the present testing, we collected confidence levels output from the ABB and Triconex controllers. These data were analyzed in terms of the true and noise confidence peaks generated during multiple cycles of DOB and CVF events. The distributions of peak and noise amplitudes were compared to see if thresholds could be set that would enable the detection of DOB and CVF events at high probabilities, while keeping false detections to low probabilities. Supporting data were also collected on PJM operation, including data on PJM pressures and levels, to provide direct experimental evidence of when PJMs were filling, full, driving, or overblowing.

Bontha, Jagannadha R.; Nigl, Franz; Weier, Dennis R.; Leigh, Richard J.; Johnson, Eric D.; Wilcox, Wayne A.; Pfund, David M.; Baumann, Aaron W.; Wang, Yeefoo

2009-08-21T23:59:59.000Z

80

Phasing Loops  

E-Print Network [OSTI]

of this work references minimalist composers and visual artist and composer Brian Eno. This thesis documents the research with analog and digital technologies, and the development of this installation....

Guinski, Rodrigo 1980-

2012-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

A study of the self-oscillating jet impingement nozzle  

E-Print Network [OSTI]

wave and flow fluctuations that need no external input. The new oscillating jet when used for impingement surface transport was labeled the Self-Oscillating Jet Impingement Nozzle. The objectives of this research were to characterize the gains in heat...

Chinnock, Paul Scott

1993-01-01T23:59:59.000Z

82

Multi-tube fuel nozzle with mixing features  

DOE Patents [OSTI]

A system includes a multi-tube fuel nozzle having an inlet plate and a plurality of tubes adjacent the inlet plate. The inlet plate includes a plurality of apertures, and each aperture includes an inlet feature. Each tube of the plurality of tubes is coupled to an aperture of the plurality of apertures. The multi-tube fuel nozzle includes a differential configuration of inlet features among the plurality of tubes.

Hughes, Michael John

2014-04-22T23:59:59.000Z

83

Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process Regenerable Mixed Copper-Iron-Inert Support Oxygen Carriers National Energy Technology Laboratory Contact NETL...

84

Chemical Looping Combustion Cold Flow Model commissioning and performance evaluation.  

E-Print Network [OSTI]

?? SINTEF and NTNU are planning to build a 150 kWth Chemical Looping Combustion (CLC) reactor system. This is new technology and the CLC reactor (more)

Tjstheim, Sindre

2010-01-01T23:59:59.000Z

85

Experimental characterization and chemical kinetics study of chemical looping combustion .  

E-Print Network [OSTI]

??Chemical looping combustion (CLC) is one of the most promising technologies to achieve carbon capture in fossil fuel power generation plants. A novel rotary-bed reactor (more)

Chen, Tianjiao, S.M. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

86

6/10/12 Revolutionary ultrasonic nozzle that will change the way water cleans 1/2www.sciencedaily.com/releases/2011/11/111109230559.htm  

E-Print Network [OSTI]

for technologies that improve our ability to clean while saving on our most important resources, water and energy6/10/12 Revolutionary ultrasonic nozzle that will change the way water cleans 1/2www.sciencedaily.com/releases/2011/11/111109230559.htm See Also: Matter & Energy Nature of Water Solar Energy Nuclear Energy Earth

Sóbester, András

87

An evolution of nozzle design: The low NOx burner experience at the Baldwin Power Station  

SciTech Connect (OSTI)

Illinois Power Company (IPC) installed low NO{sub x} burners on Baldwin Unit 3 in the Spring of 1994. Although the NO{sub x} reduction performance of these burners has been outstanding, IPC suffered catastrophic nozzle failure in the first 8 weeks of operation. The nozzles were then modified and later, replaced. Within 1 week of operation, 2 of the new nozzles also failed. This paper traces the development of the original nozzle, the influences-of other nozzle failures on its design, the determination of the cause of the original and subsequent failures, and the current state of the nozzles.

Forney, D.W. [Illinois Power Co., Decatur, IL (United States); Murray, D.G. [Rolls Royce Industrial Power, Inc., Atlanta, GA (United States); Beal, P.R. [Rolls-Royce Industrial Power, Inc., Derby (United Kingdom)

1996-01-01T23:59:59.000Z

88

Injector nozzle for molten salt destruction of energetic waste materials  

DOE Patents [OSTI]

An injector nozzle has been designed for safely injecting energetic waste materials, such as high explosives, propellants, and rocket fuels, into a molten salt reactor in a molten salt destruction process without premature detonation or back burn in the injection system. The energetic waste material is typically diluted to form a fluid fuel mixture that is injected rapidly into the reactor. A carrier gas used in the nozzle serves as a carrier for the fuel mixture, and further dilutes the energetic material and increases its injection velocity into the reactor. The injector nozzle is cooled to keep the fuel mixture below the decomposition temperature to prevent spontaneous detonation of the explosive materials before contact with the high-temperature molten salt bath.

Brummond, William A. (Livermore, CA); Upadhye, Ravindra S. (Pleasanton, CA)

1996-01-01T23:59:59.000Z

89

Closing the Loop over Wireless Networks:Closing the Loop over Wireless Networks: Fundamentals and Applications  

E-Print Network [OSTI]

Wireless Networks: Fundamentals and Applications Karl H. Johansson Electrical Engineering, Royal Institute4/9/2008 1 Closing the Loop over Wireless Networks:Closing the Loop over Wireless Networks: Fundamentals and Applications Karl H. Johansson Electrical Engineering, Royal Institute of Technology Stockholm

Johansson, Karl Henrik

90

Technolog  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Research in Research in Science and Technolog y Sandia pushes frontiers of knowledge to meet the nation's needs, today and tomorrow Sandia National Laboratories' fundamental science and technology research leads to greater understanding of how and why things work and is intrinsic to technological advances. Basic research that challenges scientific assumptions enables the nation to push scientific boundaries. Innovations and breakthroughs produced at Sandia allow it to tackle critical issues, from maintaining the safety, security and effectiveness of the nation's nuclear weapons and preventing domestic and interna- tional terrorism to finding innovative clean energy solutions, develop- ing cutting-edge nanotechnology and moving the latest advances to the marketplace. Sandia's expertise includes:

91

Code loops in both parities  

Science Journals Connector (OSTI)

We present equivalent definitions of code loops in any characteristic p?0. The most natural definition is via combinatorial polarization, but we also show how to realize code loops by linear codes and as a class of symplectic conjugacy ... Keywords: Characteristic form, Code loop, Combinatorial polarization, Conjugacy closed loop, Doubly even code, Even code loop, Kronecker product, Moufang loop, Odd code loop, Self-orthogonal code, Small Frattini loop, Symmetric associator, Symplectic loop

Ale Drpal; Petr Vojt?chovsk

2010-06-01T23:59:59.000Z

92

Revolutionary ultrasonic nozzle that will change the way water cleans  

E-Print Network [OSTI]

saving on our most important resources, water and energy." In recognition of their invention, ProfessorRevolutionary ultrasonic nozzle that will change the way water cleans ScienceDaily (Nov. 9, 2011 attachment for taps, which massively enhances the ability of water to clean. Currently, industry uses

Sóbester, András

93

Revolutionary ultrasonic nozzle that will change the way water cleans  

E-Print Network [OSTI]

resources, water and energy." In recognition of their invention, Professor Leighton and Dr Birkin were todayRevolutionary ultrasonic nozzle that will change the way water cleans This is Professor Leighton, which massively enhances the ability of water to clean. Currently, industry uses excessive water, power

Sóbester, András

94

Plasma detachment and momentum transfer in magnetic nozzles  

E-Print Network [OSTI]

Electric Propulsion and Plasma Dynamics Laboratory, Princeton University, Princeton, NJ, 08544 The naturePlasma detachment and momentum transfer in magnetic nozzles Justin M. Little and Edgar Y. Choueiri the interaction of the magnetic field induced by the currents in the plasma with the current in the applied field

Choueiri, Edgar

95

Coal Direct Chemical Looping (CDCL) Process Development  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Direct Chemical Looping (CDCL) Retrofit to Direct Chemical Looping (CDCL) Retrofit to Pulverized Coal Power Plants for In-Situ CO 2 Capture William G. Lowrie Department of Chemical & Biomolecular Engineering The Ohio State University Columbus, OH 43210 Award #: DE-NT0005289 PI: Liang-Shih Fan Presenter: Samuel Bayham Department of Chemical and Biomolecular Engineering The Ohio State University 2013 NETL CO2 Capture Technology Meeting July 11, 2013 Pittsburgh, PA Clean Coal Research Laboratory at The Ohio State University Sub-Pilot Scale Unit 250kW th Pilot Unit (Wilsonville, Alabama) Syngas Chemical Looping Coal-Direct Chemical Looping Cold Flow Model Sub-Pilot Scale Unit HPHT Slurry Bubble Column 120kW th Demonstration Unit Calcium Looping Process CCR Process Sub-Pilot Unit F-T Process

96

Turbine combustor with fuel nozzles having inner and outer fuel circuits  

DOE Patents [OSTI]

A combustor cap assembly for a turbine engine includes a combustor cap and a plurality of fuel nozzles mounted on the combustor cap. One or more of the fuel nozzles would include two separate fuel circuits which are individually controllable. The combustor cap assembly would be controlled so that individual fuel circuits of the fuel nozzles are operated or deliberately shut off to provide for physical separation between the flow of fuel delivered by adjacent fuel nozzles and/or so that adjacent fuel nozzles operate at different pressure differentials. Operating a combustor cap assembly in this fashion helps to reduce or eliminate the generation of undesirable and potentially harmful noise.

Uhm, Jong Ho; Johnson, Thomas Edward; Kim, Kwanwoo

2013-12-24T23:59:59.000Z

97

Design and performance of atomizing nozzles for spray calcination of high-level wastes  

SciTech Connect (OSTI)

A key aspect of high-level liquid-waste spray calcination is waste-feed atomization by using air atomizing nozzles. Atomization substantially increases the heat transfer area of the waste solution, which enhances rapid drying. Experience from the spray-calciner operations has demonstrated that nozzle flow conditions that produce 70-..mu.. median-volume-diameter or smaller spray droplets are required for small-scale spray calciners (drying capacity less than 80 L/h). For large-scale calciners (drying capacity greater than 300 L/h), nozzle flow conditions that produce 100-..mu.. median-volume-diameter or smaller spray droplets are required. Mass flow ratios of 0.2 to 0.4, depending on nozzle size, are required for proper operation of internal-mix atomizing nozzles. Both internal-mix and external-mix nozzles have been tested at PNL. Due to the lower airflow requirements and fewer large droplets produced, the internal-mix nozzle has been chosen for primary development in the spray calciner program at PNL. Several nozzle air-cap materials for internal-mix nozzles have been tested for wear resistance. Results show that nozzle air caps of stainless steel and Cer-vit (a machineable glass ceramic) are suceptible to rapid wear by abrasive slurries, whereas air caps of alumina and reaction-bonded silicon nitride show only slow wear. Longer-term testing is necessary to determine more accurately the actual frequency of nozzle replacement. Atomizing nozzle air caps of alumina are subject to fracture from thermal shock, whereas air caps of silicon nitride and Cer-vit are not. Fractured nozzles are held in place by the air-cap retaining ring and continue to atomize satisfactorily. Therefore, fractures caused by thermal shocking do not necessarily result in nozzle failure.

Miller, F.A.; Stout, L.A.

1981-05-01T23:59:59.000Z

98

Low NOx nozzle tip for a pulverized solid fuel furnace  

DOE Patents [OSTI]

A nozzle tip [100] for a pulverized solid fuel pipe nozzle [200] of a pulverized solid fuel-fired furnace includes: a primary air shroud [120] having an inlet [102] and an outlet [104], wherein the inlet [102] receives a fuel flow [230]; and a flow splitter [180] disposed within the primary air shroud [120], wherein the flow splitter disperses particles in the fuel flow [230] to the outlet [104] to provide a fuel flow jet which reduces NOx in the pulverized solid fuel-fired furnace. In alternative embodiments, the flow splitter [180] may be wedge shaped and extend partially or entirely across the outlet [104]. In another alternative embodiment, flow splitter [180] may be moved forward toward the inlet [102] to create a recessed design.

Donais, Richard E; Hellewell, Todd D; Lewis, Robert D; Richards, Galen H; Towle, David P

2014-04-22T23:59:59.000Z

99

Apparatus and method for a gas turbine nozzle  

DOE Patents [OSTI]

A nozzle includes an inlet, an outlet, and an axial centerline. A shroud surrounding the axial centerline extends from the inlet to the outlet and defines a circumference. The circumference proximate the inlet is greater than the circumference at a first point downstream of the inlet, and the circumference at the first point downstream of the inlet is less than the circumference at a second point downstream of the first point. A method for supplying a fuel through a nozzle directs a first airflow along a first path and a second airflow along a second path separate from the first path. The method further includes injecting the fuel into at least one of the first path or the second path and accelerating at least one of the first airflow or the second airflow.

Zuo, Baifang; Ziminsky, Willy Steve; Johnson, Thomas Edward; Intile, John Charles; Lacy, Benjamin Paul

2013-02-05T23:59:59.000Z

100

Dynamically balanced fuel nozzle and method of operation  

DOE Patents [OSTI]

An apparatus and method of operation designed to reduce undesirably high pressure oscillations in lean premix combustion systems burning hydrocarbon fuels are provided. Natural combustion and nozzle acoustics are employed to generate multiple fuel pockets which, when burned in the combustor, counteract the oscillations caused by variations in heat release in the combustor. A hybrid of active and passive control techniques, the apparatus and method eliminate combustion oscillations over a wide operating range, without the use of moving parts or electronics.

Richards, George A. (Morgantown, WV); Janus, Michael C. (Baltimore, MD); Robey, Edward H. (Westover, WV)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

6/10/12 Ultra-sonic nozzle to clean water! 1/2post.jagran.com/Ultrasonic-nozzle-to-clean-water-1321083681  

E-Print Network [OSTI]

that improve our ability to clean while saving on our most important resources, water and energy," Prof Tim6/10/12 Ultra-sonic nozzle to clean water! 1/2post.jagran.com/Ultrasonic-nozzle-to-clean to clean water! Posted on: 1 2 Nov 201 1 , 01 :1 1 PM Like Be the first of « Previous Next » London

Sóbester, András

102

Hybrid Combustion-Gasification Chemical Looping  

SciTech Connect (OSTI)

For the past several years Alstom Power Inc. (Alstom), a leading world-wide power system manufacturer and supplier, has been in the initial stages of developing an entirely new, ultra-clean, low cost, high efficiency power plant for the global power market. This new power plant concept is based on a hybrid combustion-gasification process utilizing high temperature chemical and thermal looping technology The process consists of the oxidation, reduction, carbonation, and calcination of calcium-based compounds, which chemically react with coal, biomass, or opportunity fuels in two chemical loops and one thermal loop. The chemical and thermal looping technology can be alternatively configured as (i) a combustion-based steam power plant with CO{sub 2} capture, (ii) a hybrid combustion-gasification process producing a syngas for gas turbines or fuel cells, or (iii) an integrated hybrid combustion-gasification process producing hydrogen for gas turbines, fuel cells or other hydrogen based applications while also producing a separate stream of CO{sub 2} for use or sequestration. In its most advanced configuration, this new concept offers the promise to become the technology link from today's Rankine cycle steam power plants to tomorrow's advanced energy plants. The objective of this work is to develop and verify the high temperature chemical and thermal looping process concept at a small-scale pilot facility in order to enable AL to design, construct and demonstrate a pre-commercial, prototype version of this advanced system. In support of this objective, Alstom and DOE started a multi-year program, under this contract. Before the contract started, in a preliminary phase (Phase 0) Alstom funded and built the required small-scale pilot facility (Process Development Unit, PDU) at its Power Plant Laboratories in Windsor, Connecticut. Construction was completed in calendar year 2003. The objective for Phase I was to develop the indirect combustion loop with CO{sub 2} separation, and also syngas production from coal with the calcium sulfide (CaS)/calcium sulfate (CaSO{sub 4}) loop utilizing the PDU facility. The results of Phase I were reported in Reference 1, 'Hybrid Combustion-Gasification Chemical Looping Coal Power Development Technology Development Phase I Report' The objective for Phase II was to develop the carbonate loop--lime (CaO)/calcium carbonate (CaCO{sub 3}) loop, integrate it with the gasification loop from Phase I, and ultimately demonstrate the feasibility of hydrogen production from the combined loops. The results of this program were reported in Reference 3, 'Hybrid Combustion-Gasification Chemical Looping Coal Power Development Technology Development Phase II Report'. The objective of Phase III is to operate the pilot plant to obtain enough engineering information to design a prototype of the commercial Chemical Looping concept. The activities include modifications to the Phase II Chemical Looping PDU, solids transportation studies, control and instrumentation studies and additional cold flow modeling. The deliverable is a report making recommendations for preliminary design guidelines for the prototype plant, results from the pilot plant testing and an update of the commercial plant economic estimates.

Herbert Andrus; Gregory Burns; John Chiu; Gregory Lijedahl; Peter Stromberg; Paul Thibeault

2009-01-07T23:59:59.000Z

103

Apparatus and methods for impingement cooling of a side wall of a turbine nozzle segment  

DOE Patents [OSTI]

A gas turbine nozzle segment has outer and inner bands and a vane therebetween. Each band includes a nozzle wall, a side wall, a cover and an impingement plate between the cover and the nozzle wall defining two cavities on opposite sides of the impingement plate. Cooling steam is supplied to one cavity for flow through apertures of the impingement plate to cool the nozzle wall. The side wall of the band and inturned flange define with the nozzle wall an undercut region. The impingement plate has a turned flange welded to the inturned flange. A backing plate overlies the turned flange and aligned apertures are formed through the backing plate and turned flange to direct and focus cooling flow onto the side wall of the nozzle segment.

Burdgick, Steven Sebastian (Schenectady, NY)

2002-01-01T23:59:59.000Z

104

Spray atomization characteristics of a GDI injector equipped with a group-hole nozzle  

Science Journals Connector (OSTI)

Abstract The main purpose of this paper is to analyze the spray characteristics of a group-hole nozzle in terms of spray behavior and atomization process in comparison to the characteristics of a single-hole nozzle as reference. Spray visualization and PDPA (phase Doppler particle analyzer) experiments were performed using a GDI adjustable injector, which can adopt a different type of nozzle at free spray conditions. By analyzing the spray development behavior and distribution of droplet velocity and diameter based on a time series, and comparing these results with that of a single-hole nozzle, the effects of the group-hole nozzle on the spray characteristics in a GDI injection were elucidated. Experimental results showed that the development processes of spray behavior from a group-hole nozzle were similar to that of the single-hole nozzle. Both the sprays had similar spray tip penetration and dispersion at the same stages of development. However, owing to the constant spray momentum from a spray interaction, the spray behavior from the group-hole nozzle seemed to be more stable than that of the single-hole nozzle. In terms of the averaged droplet size, the group-hole nozzle held an advantage over the single-hole nozzle in decreasing Sauter mean diameter (SMD) by approximately 2?m. In addition, in comparison to the spatial distribution of droplet diameter and velocity between them, it can be confirmed that the group-hole nozzle has strong effects on reduction in diameter as well as rapid dispersion of droplet due to active air entrainment. These atomization characteristics are considered as an important advantages for improving mixture formation in GDI engine.

Sanghoon Lee; Sungwook Park

2014-01-01T23:59:59.000Z

105

Duct injection technology prototype development: Nozzle development Subtask 4. 1, Atomizer specifications for duct injection technology  

SciTech Connect (OSTI)

Babcock Wilcox has conducted a program to identify atomizers appropriate for successful in-duct injection of humidification water and lime slurries. The purpose of this program was to identify and quantify atomizer spray and performance criteria that affect the operations and reliability of the in-duct SO{sub 2} removal process, and compare commercially available atomizers to these criteria.

Not Available

1992-02-01T23:59:59.000Z

106

Stress analysis of the HFIR HB-2 and HB-3 beam tube nozzles  

SciTech Connect (OSTI)

The results of three-dimensional linear elastic stress analyses of the HFIR HB-2 and HB-3 nozzles are presented in this report. Finite element models were developed using the PATRAN pre-processing code and translated into ABAQUS input file format. A scoping analysis using simple geometries with internal pressure loading was carried out to assess the capabilities of the ABAQUS/Standard code to calculate maximum principal stress distributions within cylinders with and without holes. These scoping calculations were also used to provide estimates for the variation in tangential stress around the rim of a nozzle using the superposition of published closed-form solutions for the stress around a hole in an infinite flat plate under uniaxial tension. From the results of the detailed finite element models, peak stress concentration factors (based on the maximum principal stresses in tension) were calculated to be 3.0 for the HB-2 nozzle and 2.8 for the HB-3 nozzle. Submodels for each nozzle were built to calculate the maximum principal stress distribution in the weldment region around the nozzle, where displacement boundary conditions for the submodels were automatically calculated by ABAQUS using the results of the global nozzle models. Maximum principal stresses are plotted and tabulated for eight positions around each nozzle and nozzle weldment.

Williams, P.T.

1998-08-01T23:59:59.000Z

107

Transonic throat flow in radial or nearly radial supersonic nozzles  

E-Print Network [OSTI]

general non- symmetric, inclined radial nozzle with n =2. 0, ( inward flow) 37 4 Mach number contours with n=0. 0 and Rc/D=1. 0 . . 42 5 Mach number contours with n=1. 0 and Rc/D=1. 0 6 Mach number contours with n=2. 0 and R /D=1. 0 7 Mach number... are taken as the irrotat ional ity condition U - VR ? 0 (6) and the gas dynamic equation 2 (U ? a')U + (V ? a )V + 2UVU ? = 0 2 2 va V z R R R where m=0 for planar flow and ~=1 for axisymmetric flow. The subscripts denote partial differentiation...

Carroll, Bruce Frederick

2012-06-07T23:59:59.000Z

108

Surge Nozzle NDE Specimen Mechanical Stress Improvement Analysis  

SciTech Connect (OSTI)

The purpose of this project was to perform a finite element analysis of a pressurized water reactor pressurizer surge nozzle mock-up to predict both the weld residual stresses created in its construction and the final stress state after the application of the Mechanical Stress Improvement Process (MSIP). Strain gages were applied to the inner diameter of the mock-up to record strain changes during the MSIP. These strain readings were used in an attempt to calculate the final stress state of the mock-up as well.

Fredette, Lee F.

2011-07-14T23:59:59.000Z

109

Pre-stressed/pre-compressed gas turbine nozzle  

DOE Patents [OSTI]

A method of increasing low cycle fatigue life of a turbine nozzle comprising a plurality of stationary airfoils extending between radially inner and outer ring segments comprising a) providing at least one radial passage in each of the plurality of airfoils; b) installing a rod in the radial passage extending between the radially inner and outer ring segments and fixing one end of the rod to one of the inner and outer rings; and c) pre-loading the rod to compress the airfoil between the inner and outer ring segments.

Jang, Hoyle (Schenectady, NY); Itzel, Gary Michael (Clifton Park, NY); Yu, Yufeng Phillip (Guilderland, NY)

2002-01-01T23:59:59.000Z

110

Sodium Plugging Test Loop - Nuclear Engineering Division (Argonne)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sodium Plugging Test Loop Sodium Plugging Test Loop Sodium Plugging Test Loop Overview Other Facilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Sodium Plugging Test Loop This experimental setup is part of the Global Nuclear Energy Partnership (GNEP) Advanced Fuel Cycle R&D work carried out at Argonne on advanced sodium component technology. Bookmark and Share For long range sodium technology research and development, employing supercritical CO2 Brayton cycle power conversion technology as an advanced balance of plant technology is being considered. The component that provides the interface between the sodium and supercritical CO2 is a compact heat exchanger known as a printed circuit heat exchanger (PCHE). This heat exchanger has very small coolant flow passages that may foul or

111

758-60 751-54 Tanana Loop  

E-Print Network [OSTI]

Service 308 Tanana Loop Hutchison Institute of Technology West Valley High School Constitution Hall Key Station, Yankovich Road Harper Building, 4280 Geist Road (Interior-Aleutians Campus) West Valley Plaza

Wagner, Diane

112

20 - Chemical looping combustion (CLC)  

Science Journals Connector (OSTI)

Abstract: Chemical-looping combustion (CLC) is a new combustion technology with inherent separation of the greenhouse gas CO2. The technology involves the use of a metal oxide as an oxygen carrier which transfers oxygen from combustion air to the fuel, and hence a direct contact between air and fuel is avoided. Two inter-connected fluidized beds, i.e. fuel reactor and air reactor, are used in the process. The outlet gas from the fuel reactor consists ideally of CO2 and H2O, and the latter is easily removed by condensation. This chapter presents the basic principles, gives an overview of oxygen-carrier materials and operational experiences, discusses the application to gaseous, liquid and solid fuels, and the use for combustion as well as for hydrogen production.

A. Lyngfelt

2013-01-01T23:59:59.000Z

113

Process modeling aspects of chemical-looping with oxygen uncoupling and chemical-looping combustion for solid fuels.  

E-Print Network [OSTI]

??Chemical-looping combustion (CLC) is one of the candidate technologies that is currently being explored to reduce the energy penalty associated with capturing CO2 from coal-fired (more)

Sahir, Asad Hasan

2013-01-01T23:59:59.000Z

114

E-Print Network 3.0 - advanced loop type Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Collection: Computer Technologies and Information Sciences 6 Removing Impediments to Loop Fusion through Code Transformations Summary: determinant of overall performance. Compilers...

115

Reducible Oxide Based Oxygen Carriers for Chemical Looping Combustion and Partial Oxidation of Methane.  

E-Print Network [OSTI]

??Chemical looping combustion (CLC) is a novel combustion technology that offers a highly efficient route towards clean combustion of fuel with inherent CO2 capture. In (more)

Bhavsar, Saurabh

2014-01-01T23:59:59.000Z

116

Two-phase fluid flow through nozzles and abrupt enlargements  

SciTech Connect (OSTI)

The behavior of a fluid undergoing a phase change from liquid to vapor while flowing through a duct is of interest to engineers in many practical situations. For the case of interest to us, geothermal hot water flowing through various channels (well bores, surface pipes, equipment, etc.) may reach its flash point and choke point under appropriate conditions. The proper design of energy conversion systems depends on the ability of the engineer to predict this behavior with an acceptable degree of accuracy. The present study was in part motivated by the task of designing the blow-down, two-phase fluid flow test facility at Brown University. In that facility, a refrigerant (dichlorotetrafluoroethane or R-114) is boosted to a selected stagnation state and allowed to flow through a nozzle orifice into a long straight tube. The operation relies on the fluid being choked at the inlet section, and under certain circumstances, at the downstream section as well. A simple schematic of the test section is shown. This paper treats the problem generically and analytically, making use of the basic laws of fluid mechanics and thermodynamics. Specific calculations have been performed using R-114 as the flowing medium. They attempt to identify and describe all possible flow conditions in and downstream of the nozzle for all possible stagnation conditions.

Olia, H.; Maeder, P.F.; DiPippo, R.; Dickinson, D.A.

1983-10-01T23:59:59.000Z

117

Apparatus for depositing hard coating in a nozzle orifice  

DOE Patents [OSTI]

The present invention is directed to a process for coating the interior surfaces of an orifice in a substrate that forms a slurry fuel injection nozzle. In a specific embodiment, the nozzle is part of a fuel injection system for metering a coal-water slurry into a large, medium-speed, multi-cylinder diesel engine. In order to retard erosion of the orifice, the substrate is placed in a chemical vapor deposition (CVD) reaction chamber. A reaction gas is passed into the chamber at a gas temperature below its reaction temperature and is directed through the orifice in the substrate. The gas reaction temperature is a temperature at and above which the reaction gas deposits as a coating, and the reaction gas is of a composition whereby improved resistance to erosion by flow of the particulates in the slurry fuel is imparted by the deposited coating. Only the portion of the substrate in proximity to the orifice to be coated is selectively heated to at least the gas reaction temperature for effecting coating of the orifice's interior surfaces by the vapor deposited coating formed from the reaction gas.

Flynn, Paul L. (Fairview, PA); Giammarise, Anthony W. (Erie, PA)

1995-01-01T23:59:59.000Z

118

Apparatus for depositing hard coating in a nozzle orifice  

DOE Patents [OSTI]

The present invention is directed to a process for coating the interior surfaces of an orifice in a substrate that forms a slurry fuel injection nozzle. In a specific embodiment, the nozzle is part of a fuel injection system for metering a coal-water slurry into a large, medium-speed, multi-cylinder diesel engine. In order to retard erosion of the orifice, the substrate is placed in a chemical vapor deposition (CVD) reaction chamber. A reaction gas is passed into the chamber at a gas temperature below its reaction temperature and is directed through the orifice in the substrate. The gas reaction temperature is a temperature at and above which the reaction gas deposits as a coating, and the reaction gas is of a composition whereby improved resistance to erosion by flow of the particulates in the slurry fuel is imparted by the deposited coating. Only the portion of the substrate in proximity to the orifice to be coated is selectively heated to at least the gas reaction temperature for effecting coating of the orifice`s interior surfaces by the vapor deposited coating formed from the reaction gas. 2 figs.

Flynn, P.L.; Giammarise, A.W.

1995-02-21T23:59:59.000Z

119

Process for depositing hard coating in a nozzle orifice  

DOE Patents [OSTI]

The present invention is directed to a process for coating the interior surfaces of an orifice in a substrate that forms a slurry fuel injection nozzle. In a specific embodiment, the nozzle is part of a fuel injection system for metering a coal-water slurry into a large, medium-speed, multi-cylinder diesel engine. In order to retard erosion of the orifice, the substrate is placed in a chemical vapor deposition (CVD) reaction chamber. A reaction gas is passed into the chamber at a gas temperature below its reaction temperature and is directed through the orifice in the substrate. The gas reaction temperature is a temperature at and above which the reaction gas deposits as a coating, and the reaction gas is of a composition whereby improved resistance toerosion by flow of the particulates in the slurry fuel is imparted by the deposited coating. Only the portion of the substrate in proximity to the orifice to be coated is selectively heated to at least the gas reaction temperature for effecting coating of the orifice's interior surfaces by the vapor deposited coating formed from the reaction gas.

Flynn, Paul L. (5139 Fox Park Dr., Fairview, PA 16415); Giammarise, Anthony W. (527 Lincoln Ave., Erie, PA 16505)

1991-01-01T23:59:59.000Z

120

Low-cost conversion of a coaxial nozzle arrangement into a stationary low-temperature attachment  

Science Journals Connector (OSTI)

An easily assembled stationary nozzle accessory designed for the Siemens/Nicolet LTII low-temperature device with standard coaxial nozzle arrangement is described. The attachment significantly improves the efficiency of the cooling device as well as the versatility of the diffractometer.

Kottke, T.

1996-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Development test report for the high pressure water jet system nozzles  

SciTech Connect (OSTI)

The high pressure water jet nozzle tests were conducted to identify optimum water pressure, water flow rate, nozzle orifice size and fixture configuration needed to effectively decontaminate empty fuel storage canisters in KE-Basin. This report gives the tests results and recommendations from the these tests.

Takasumi, D.S.

1995-09-28T23:59:59.000Z

122

Dry low NOx combustion system with pre-mixed direct-injection secondary fuel nozzle  

DOE Patents [OSTI]

A combustion system includes a first combustion chamber and a second combustion chamber. The second combustion chamber is positioned downstream of the first combustion chamber. The combustion system also includes a pre-mixed, direct-injection secondary fuel nozzle. The pre-mixed, direct-injection secondary fuel nozzle extends through the first combustion chamber into the second combustion chamber.

Zuo, Baifang; Johnson, Thomas; Ziminsky, Willy; Khan, Abdul

2013-12-17T23:59:59.000Z

123

Investigation of Cluster-Nozzle Concepts for Direct Injection Diesel Engines  

E-Print Network [OSTI]

Investigation of Cluster-Nozzle Concepts for Direct Injection Diesel Engines Von der Fakultät für Investigation of Cluster-Nozzle Concepts for Direct Injection Diesel Engines WICHTIG: D 82 überprüfen !!! #12" in Zusammenarbeit mit General Motors R&D and Strategic Planning, Warren, MI, USA durchgeführt. Ein Teil der Arbeit

Peters, Norbert

124

Alignment of molecules in gaseous transport: Alkali dimers in supersonic nozzle beams  

E-Print Network [OSTI]

Alignment of molecules in gaseous transport: Alkali dimers in supersonic nozzle beams M. P. SinhaO) + a.P lcosO), where 0 is the angle between the angular momentum vector J of the molecule and the beam direction. This method is applied to determine the alignment of Na2 molecules in a supersonic nozzle beam

Zare, Richard N.

125

Apparatus for impingement cooling a side wall adjacent an undercut region of a turbine nozzle segment  

DOE Patents [OSTI]

A gas turbine nozzle segment has outer and inner bands and vanes therebetween. Each band includes a side wall, a cover and an impingement plate between the cover and nozzle wall defining two cavities on opposite sides of the impingement plate. Cooling steam is supplied to one cavity for flow through apertures of the impingement plate to cool the nozzle wall. The side wall of the band and inturned flange define with the nozzle wall an undercut region. Slots are formed through the inturned flange along the nozzle side wall. A plate having through-apertures extending between opposite edges thereof is disposed in each slot, the slots and plates being angled such that the cooling medium exiting the apertures in the second cavity lie close to the side wall for focusing and targeting cooling medium onto the side wall.

Burdgick, Steven Sebastian (Schenectady, NY)

2002-01-01T23:59:59.000Z

126

Ultrasonic Phased Array Evaluation of Control Rod Drive Mechanism (CRDM) Nozzle Interference Fit and Weld Region  

SciTech Connect (OSTI)

In this investigation, non-destructive and destructive testing were used to evaluate potential boric acid leakage paths around an Alloy 600 CRDM penetration (Nozzle 63) from the North Anna Unit 2 reactor pressure vessel head that was removed from service in 2003. For this investigation, Nozzle 63 was examined using phased array ultrasonic testing. Prior to examining Nozzle 63, a CRDM penetration mockup with known notches and boric acid deposits was used to assess probe sensitivity, resolution and calibration. Following the non-destructive testing of Nozzle 63, the nozzle was destructively examined to visually assess the leak paths. These destructive and nondestructive results are compared and results are presented. The results of this investigation may be used by NRC to evaluate licensees volumetric leak path assessment methodologies and to support regulatory inspection requirements.

Cinson, Anthony D.; Crawford, Susan L.; MacFarlan, Paul J.; Mathews, Royce; Hanson, Brady D.; Diaz, Aaron A.

2011-10-01T23:59:59.000Z

127

Soot blower optimization; Part 1: Fundamental hydrodynamics of a soot blower nozzle and jet  

SciTech Connect (OSTI)

The fundamental hydrodynamics of soot blower nozzles and jets are examined. For currently available nozzles, a substantial fraction of the energy available in the steam jet is dissipated as the steam passes through a shock wave only a few jet diameters beyond the nozzle outlet. Only a small fraction of the initial energy is delivered to the heat-transfer surface for cleaning. Efforts to increase the delivered energy by raising the upstream steam pressure above the design condition produces a larger shock wave and only a small increase in delivered energy. Nozzle design should be changed to permit full expansion of the steam before it leaves the nozzle. This would eliminate the shock wave and substantially improve soot blower performance.

Jameel, M.I.; Cormack, D.E.; Tran, H. (Univ. of Toronto, Ontario (Canada). Dept. of Chemical Engineering and Applied Chemistry); Moskal, T.E. (Diamond Power Specialty Corp., Lancaster, OH (United States))

1994-05-01T23:59:59.000Z

128

Connecting PHP and PHP Loops  

E-Print Network [OSTI]

Connecting PHP and MySQL 1 #12;Outline · PHP Loops · PHPMyAdmin · Introducing SQL · Connecting Database from PHP · Exercises 2 #12;Loops · A loop statement is a control structure that repeatedly PHP supports the C style while loop ­ The body of the cycle

Graham, Nick

129

ADDITIONAL STRESS AND FRACTURE MECHANICS ANALYSES OF PRESSURIZED WATER REACTOR PRESSURE VESSEL NOZZLES  

SciTech Connect (OSTI)

In past years, the authors have undertaken various studies of nozzles in both boiling water reactors (BWRs) and pressurized water reactors (PWRs) located in the reactor pressure vessel (RPV) adjacent to the core beltline region. Those studies described stress and fracture mechanics analyses performed to assess various RPV nozzle geometries, which were selected based on their proximity to the core beltline region, i.e., those nozzle configurations that are located close enough to the core region such that they may receive sufficient fluence prior to end-of-life (EOL) to require evaluation of embrittlement as part of the RPV analyses associated with pressure-temperature (P-T) limits. In this paper, additional stress and fracture analyses are summarized that were performed for additional PWR nozzles with the following objectives: To expand the population of PWR nozzle configurations evaluated, which was limited in the previous work to just two nozzles (one inlet and one outlet nozzle). To model and understand differences in stress results obtained for an internal pressure load case using a two-dimensional (2-D) axi-symmetric finite element model (FEM) vs. a three-dimensional (3-D) FEM for these PWR nozzles. In particular, the ovalization (stress concentration) effect of two intersecting cylinders, which is typical of RPV nozzle configurations, was investigated. To investigate the applicability of previously recommended linear elastic fracture mechanics (LEFM) hand solutions for calculating the Mode I stress intensity factor for a postulated nozzle corner crack for pressure loading for these PWR nozzles. These analyses were performed to further expand earlier work completed to support potential revision and refinement of Title 10 to the U.S. Code of Federal Regulations (CFR), Part 50, Appendix G, Fracture Toughness Requirements, and are intended to supplement similar evaluation of nozzles presented at the 2008, 2009, and 2011 Pressure Vessels and Piping (PVP) Conferences. This work is also relevant to the ongoing efforts of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code, Section XI, Working Group on Operating Plant Criteria (WGOPC) efforts to incorporate nozzle fracture mechanics solutions into a revision to ASME B&PV Code, Section XI, Nonmandatory Appendix G.

Walter, Matthew [Structural Integrity Associates, Inc.; Yin, Shengjun [ORNL; Stevens, Gary [U.S. Nuclear Regulatory Commission; Sommerville, Daniel [Structural Integrity Associates, Inc.; Palm, Nathan [Westinghouse Electric Company, Cranberry Township, PA; Heinecke, Carol [Westinghouse Electric Company, Cranberry Township, PA

2012-01-01T23:59:59.000Z

130

High-temperature turbine technology program hot-gas path development test. Part II. Testing  

SciTech Connect (OSTI)

This topical report of the US Department of Energy High-Temperature Turbine Technology (DOE-HTTT) Phase II program presents the results of testing full-scale water-cooled first-stage and second-stage turbine nozzles at design temperature and pressure to verify that the designs are adequate for operation in a full-scale turbine environment. Low-cycle fatigue life of the nozzles was demonstrated by subjecting cascade assemblies to several hundred simulated startup/shutdown turbine cycles. This testing was accomplished in the Hot-Gas Path Development Test Stand (HGPDTS), which is capable of evaluating full-scale combustion and turbine nozzle components. A three-throat cascade of the first-stage turbine nozzle was successfully tested at a nozzle inlet gas temperature of 2630/sup 0/F and a nozzle inlet pressure of 11.3 atmospheres. In addition to steady-state operation at the design firing temperature, the nozzle cascade was exposed to a simulated startup/shutdown turbine cycle by varying the firing temperature. A total of 42 h at the design point and 617 thermal cycles were accumulated during the test periods. First-stage nozzle test results show that measured metal and coolant temperatures correspond well to the predicted design values. This nozzle design has been shown to be fully satisfactory for the application (2600/sup 0/F), with growth capability to 3000/sup 0/F firing temperature. A post-test metallurgical examination of sectioned portions of the tested nozzles shows a totally bonded structure, confirming the test results and attesting to the successful performance of water-cooled composite nozzle hardware.

Horner, M.W.

1982-03-01T23:59:59.000Z

131

Apparatus and methods for impingement cooling of an undercut region adjacent a side wall of a turbine nozzle segment  

DOE Patents [OSTI]

A gas turbine nozzle segment has outer and inner bands. Each band includes a side wall, a cover and an impingement plate between the cover and nozzle wall defining two cavities on opposite sides of the impingement plate. Cooling steam is supplied to one cavity for flow through apertures of the impingement plate to cool the nozzle wall. The side wall of the band and inturned flange define with the nozzle wall an undercut region. The inturned flange has a plurality of apertures for directing cooling steam to cool the side wall between adjacent nozzle segments.

Burdgick, Steven Sebastian (Schenectady, NY); Itzel, Gary Michael (Simpsonville, SC)

2001-01-01T23:59:59.000Z

132

Flame structure of wall-impinging diesel fuel sprays injected by group-hole nozzles  

SciTech Connect (OSTI)

This paper describes an investigation of the flame structure of wall-impinging diesel sprays injected by group-hole nozzles in a constant-volume combustion vessel at experimental conditions typical of a diesel engine. The particular emphasis was on the effect of the included angle between two orifices (0-15 deg. in current study) on the flame structure and combustion characteristics under various simulated engine load conditions. The laser absorption scattering (LAS) technique was applied to analyze the spray and mixture properties. Direct flame imaging and OH chemiluminescence imaging were utilized to quantify the ignition delay, flame geometrical parameters, and OH chemiluminescence intensity. The images show that the asymmetric flame structure emerges in wall-impinging group-hole nozzle sprays as larger included angle and higher engine load conditions are applied, which is consistent with the spray shape observed by LAS. Compared to the base nozzle, group-hole nozzles with large included angles yield higher overall OH chemiluminescence intensity, wider flame area, and greater proportion of high OH intensity, implying the better fuel/air mixing and improved combustion characteristics. The advantages of group-hole nozzle are more pronounced under high load conditions. Based on the results, the feasibility of group-hole nozzle for practical direct injection diesel engines is also discussed. It is concluded that the asymmetric flame structure of a group-hole nozzle spray is favorable to reduce soot formation over wide engine loads. However, the hole configuration of the group-hole nozzle should be carefully considered so as to achieve proper air utilization in the combustion chamber. Stoichiometric diesel combustion is another promising application of group-hole nozzle. (author)

Gao, Jian; Moon, Seoksu; Nishida, Keiya; Matsumoto, Yuhei [Department of Mechanical System Engineering, University of Hiroshima, Higashi-Hiroshima, 739-8527 (Japan); Zhang, Yuyin [Department of Mechanical Engineering, Tokyo Denki University, Tokyo, 101-8457 (Japan)

2009-06-15T23:59:59.000Z

133

Development of Computational Approaches for Simulation and Advanced Controls for Hybrid Combustion-Gasification Chemical Looping  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Computational Approaches Computational Approaches for Simulation and Advanced Controls for Hybrid Combustion-Gasification Chemical Looping Background The United States Department of Energy (DOE) National Energy Technology Laboratory (NETL) develops affordable and clean energy from coal and other fossil fuels to secure a sustainable energy economy. To further this mission, NETL funds research and development of advanced control technologies, including chemical looping (CL)

134

Novel Reactor Design for Solid Fuel Chemical Looping Combustion  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Novel Reactor Design for Solid Fuel Novel Reactor Design for Solid Fuel Chemical Looping Combustion Opportunity Research is active on the patent pending technology, titled "Apparatus and Method for Solid Fuel Chemical Looping Combustion." This technology is available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory. Overview The removal of CO2 from power plants is challenging because existing methods to separate CO2 from the gas mixture requires a significant fraction of the power plant output. Chemical-looping combustion (CLC) is a novel technology that utilizes a metal oxide oxygen carrier to transport oxygen to the fuel thereby avoiding direct contact between fuel and air. The use of CLC has the advantages of reducing the energy penalty while

135

NETL - Chemical Looping Reactor  

ScienceCinema (OSTI)

NETL's Chemical Looping Reactor unit is a high-temperature integrated CLC process with extensive instrumentation to improve computational simulations. A non-reacting test unit is also used to study solids flow at ambient temperature. The CLR unit circulates approximately 1,000 pounds per hour at temperatures around 1,800 degrees Fahrenheit.

None

2014-06-26T23:59:59.000Z

136

Characteristics of a Modified Bell Jar Nozzle Designed for CFB Boilers  

Science Journals Connector (OSTI)

One of the most important factors for trouble free operation of CFB boilers is the pressure drop of the ... with large-scale industrial circulating fluidized bed (CFB) boilers. The nozzle consists of a...

Z. M. Huang; H. R. Yang; Q. Liu; Y. Wang

2010-01-01T23:59:59.000Z

137

Acoustic characterization of sub-scale rocket nozzles. Brian W. Donald  

E-Print Network [OSTI]

solid and liquid propellant engines, but are more prolonged in the latter due to the longer time (up to 3 to 5 seconds) required for the turbine to produce the hydrodynamic head needed for the nozzle

Tinney, Charles E.

138

Method of controlling the side wall thickness of a turbine nozzle segment for improved cooling  

DOE Patents [OSTI]

A gas turbine nozzle segment has outer and inner bands and a vane extending therebetween. Each band has a side wall, a cover and an impingement plate between the cover and nozzle wall defining two cavities on opposite sides of the impingement plate. Cooling steam is supplied to one cavity for flow through apertures of the impingement plate to cool the nozzle wall. The side wall of the band has an inturned flange defining with the nozzle wall an undercut region. The outer surface of the side wall is provided with a step prior to welding the cover to the side wall. A thermal barrier coating is applied in the step and, after the cover is welded to the side wall, the side wall is finally machined to a controlled thickness removing all, some or none of the coating.

Burdgick, Steven Sebastian (Schenectady, NY)

2002-01-01T23:59:59.000Z

139

Optimization of Gas Nozzles Geometry in Dual-Fuel Burners of Power Stations  

Science Journals Connector (OSTI)

Thermal power required by boilers in steam power stations is supplied through gas or heavy oil fueled burners. Incorrect functioning ... in the boilers of Shazand 325MW power station in Arak. Gas-fueled nozzles ...

Ebrahim Moussavi Torshizi

2008-08-01T23:59:59.000Z

140

Catchment Efficiency for Novel Nozzle Designs Used In Laser Cladding And Alloying  

Science Journals Connector (OSTI)

This paper describes the laser alloying and cladding nozzles that are being investigated, with the objective of alloying and cladding in any direction and at any angle ... basis of this work, because without it,

S. Carty; I. Owen; W. M. Steen; B. Bastow

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Improve drilling efficiency with two nozzles and more weight-on-bit  

SciTech Connect (OSTI)

Field tests evaluated the performance of three-cone insert bits using only two nozzles sized from pressure measurements made at the rig to give maximum hydraulic impact. The tests were conducted on two rigs in California and three in Texas. Test techniques entailed finding a suitable formation that required two identical bits to drill through. The first bit was operated with three nozzles while the subsequent bit was operated with two nozzles. During the test the drilling parameters (such as weight-on-bit, rotary speed, nozzle flow area, pump pressure, circulation rate, and mud weight) were kept as constant as possible. Drilling rates of the two bits were then compared and analyzed with the aid of mud-logs, electric-logs, and drilling recorder information. The depth and the relative position of the formation were also carefully compared with offset well bit records.

Tsai, C.R.; Robinson, L.H.

1983-02-01T23:59:59.000Z

142

Imaging and PDA analysis of a GDI spray in the near-nozzle region  

Science Journals Connector (OSTI)

This paper describes a combined LDA, PDA and imaging analysis of the pressure swirl spray in the near-nozzle region of a GDI injector. This innovative approach in the use...

Graham Wigley; Martin Goodwin; Graham Pitcher; Damien Blondel

2004-04-01T23:59:59.000Z

143

ROTATIONAL AND VIBRATIONAL RAMAN SPECTROSCOPY FOR FLOW FROM AN UNDEREXPANDED JET NOZZLE  

E-Print Network [OSTI]

by examining the properties of Mach disks in the exhaust of an underexpanded nozzle. Benefits of this research can be applied to turbojets, ramjets, afterburners, and rockets to increase efficiency and overall thrust. Laser techniques have often been used...

Bayeh, Alexander

2008-08-19T23:59:59.000Z

144

Nuclear reactor fuel assembly duct-tube-to-inlet-nozzle attachment system  

DOE Patents [OSTI]

A reusable system for removably attaching the lower end 21 of a nuclear reactor fuel assembly duct tube to an upper end 11 of a nuclear reactor fuel assembly inlet nozzle. The duct tube's lower end 21 has sides terminating in locking tabs 22 which end in inwardly-extending flanges 23. The flanges 23 engage recesses 13 in the top section 12 of the inlet nozzle's upper end 11. A retaining collar 30 slides over the inlet nozzle's upper end 11 to restrain the flanges 23 in the recesses 13. A locking nut 40 has an inside threaded portion 41 which engages an outside threaded portion 15 of the inlet nozzle's upper end 11 to secure the retaining collar 30 against protrusions 24 on the duct tube's sides.

Christiansen, David W. (Kennewick, WA); Smith, Bob G. (Kennewick, WA)

1982-01-01T23:59:59.000Z

145

School of Applied Technology School of Applied Technology  

E-Print Network [OSTI]

School of Applied Technology School of Applied Technology Daniel F. and Ada L. Rice Campus Illinois Institute of Technology 201 E. Loop Road Wheaton, IL 60187 630.682.6000 www.iit.edu/applied tech/ Dean and Academic Director, Information Technology and Management Programs: C. Robert Carlson Director of Operations

Heller, Barbara

146

School of Applied Technology School of Applied Technology  

E-Print Network [OSTI]

School of Applied Technology School of Applied Technology Daniel F. and Ada L. Rice Campus Illinois Institute of Technology 201 E. Loop Road Wheaton, IL 60187 630.682.6000 www.iit.edu/applied tech/ Dean Technology and Management Programs: Mazin Safar Director, Marketing & Development: Scott Pfeiffer Director

Heller, Barbara

147

Operating temperature effects on nozzle coking in a cottonseed oil fueled diesel engine  

E-Print Network [OSTI]

OPERATING TEMPERATURE EFFECTS ON NOZZLE COKING IN A COTTONSEED OIL FUELED DIESEL ENGINE A Thesis CHARLES MICHAEL YARBROUGH Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degree cf... MASTER OF SCIENCE December 1984 Major Subject: Agricultural Engineering OPERATING TEMPERATURE EFFECTS ON NOZZLE CORING IN A COTTONSEED OIL FUELED DIESEL ENGINE A Thesis by CHARLES MICHAEL YARBROUGH Approved as to style and content by: ayne A. Le...

Yarbrough, Charles Michael

2012-06-07T23:59:59.000Z

148

7 - Loop Statements in Matlab  

Science Journals Connector (OSTI)

This chapter explains the construction of for and while loop statements in Matlab. Also, this chapter explains combining conditional statements with loop statements. Recursive functions are explained further in this chapter. This chapter contains two projects that enable readers to solve advanced problems using Matlab. Keywords Control flow, for and while loop statements, recursive functions, Conways Game of Life

Munther Gdeisat; Francis Lilley

2013-01-01T23:59:59.000Z

149

Resuspension of non-Newtonian slurries by submerged jet-nozzles  

SciTech Connect (OSTI)

Experiments were conducted to determine the fluid velocity required for resuspension and removal of the radioactive waste sludge, which is characterized as a non-Newtonian fluid, from the tanks at the Savannah river site (SRS) (Georgia, USA) to accelerate the closure of the tanks with high level waste (HLW). Five different non-Newtonian fluids, which simulated the actual waste characteristics, were used to investigate the resuspension of the slurries with a jet-nozzle mixer. The laboratory tests were conducted at different flow rates and jet-nozzle orientations in a cylindrical tank with 0.3-m diameter and 0.46 m in height. Resuspension of the slurries was achieved by the submerged jets produced by two horizontal discharge nozzles located under the liquid level and positioned at 180 from each other. The fluids exhibited Bingham plastic behavior; therefore, the mixing power depends not only on the Reynolds number but also on the yield stress and high shear viscosity. A similarity analysis was performed to determine the effective cleaning radius (ECR) of the jet. The mixing efficiency was evaluated by visual analysis of the images during the experiments conducted at three nozzle orientations at 0 , 45 , and 90 and two nozzle exit velocities of 2.33 m/s and 0.56 m/s. The centerline velocity decayed with the distance from the jet-nozzle. The experimental results were compared with other mixing models. (author)

Reshma, Reshma [Applied Research Center, Florida International University, Miami, FL 33174 (United States); Civil and Environmental Engineering Department, Florida International University, Engineering Center 3676, Miami, FL 33174 (United States); Daas, Mutaz; Srivastava, Rajiv [Applied Research Center, Florida International University, Miami, FL 33174 (United States); Tansel, Berrin [Civil and Environmental Engineering Department, Florida International University, Engineering Center 3676, Miami, FL 33174 (United States)

2007-07-15T23:59:59.000Z

150

COMPARISON OF NICKEL AND IRON-BASED OXYGEN CARRIERS SUPPORTED ON ALUMINA IN SYNGAS-FUELED CHEMICAL LOOPING COMBUSTION.  

E-Print Network [OSTI]

??Chemical looping is considered as a novel technology capable of resolving both energy and environmental problems in combustion process. The possibility of using oxides of (more)

Najjarpour Jabbary, Farzin

2014-01-01T23:59:59.000Z

151

Chemical Looping Combustion Kinetics  

SciTech Connect (OSTI)

One of the most promising methods of capturing CO{sub 2} emitted by coal-fired power plants for subsequent sequestration is chemical looping combustion (CLC). A powdered metal oxide such as NiO transfers oxygen directly to a fuel in a fuel reactor at high temperatures with no air present. Heat, water, and CO{sub 2} are released, and after H{sub 2}O condensation the CO{sub 2} (undiluted by N{sub 2}) is ready for sequestration, whereas the nickel metal is ready for reoxidation in the air reactor. In principle, these processes can be repeated endlessly with the original nickel metal/nickel oxide participating in a loop that admits fuel and rejects ash, heat, and water. Our project accumulated kinetic rate data at high temperatures and elevated pressures for the metal oxide reduction step and for the metal reoxidation step. These data will be used in computational modeling of CLC on the laboratory scale and presumably later on the plant scale. The oxygen carrier on which the research at Utah is focused is CuO/Cu{sub 2}O rather than nickel oxide because the copper system lends itself to use with solid fuels in an alternative to CLC called 'chemical looping with oxygen uncoupling' (CLOU).

Edward Eyring; Gabor Konya

2009-03-31T23:59:59.000Z

152

Cosmic String Loop Microlensing  

E-Print Network [OSTI]

Cosmic superstring loops within the galaxy microlens background point sources lying close to the observer-string line of sight. For suitable alignments, multiple paths coexist and the (achromatic) flux enhancement is a factor of two. We explore this unique type of lensing by numerically solving for geodesics that extend from source to observer as they pass near an oscillating string. We characterize the duration of the flux doubling and the scale of the image splitting. We probe and confirm the existence of a variety of fundamental effects predicted from previous analyses of the static infinite straight string: the deficit angle, the Kaiser-Stebbins effect, and the scale of the impact parameter required to produce microlensing. Our quantitative results for dynamical loops vary by O(1) factors with respect to estimates based on infinite straight strings for a given impact parameter. A number of new features are identified in the computed microlensing solutions. Our results suggest that optical microlensing can offer a new and potentially powerful methodology for searches for superstring loop relics of the inflationary era.

Jolyon K. Bloomfield; David F. Chernoff

2013-11-27T23:59:59.000Z

153

ADVANCED RECIPROCATING COMPRESSION TECHNOLOGY (ARCT)  

SciTech Connect (OSTI)

The U.S. natural gas pipeline industry is facing the twin challenges of increased flexibility and capacity expansion. To meet these challenges, the industry requires improved choices in gas compression to address new construction and enhancement of the currently installed infrastructure. The current fleet of installed reciprocating compression is primarily slow-speed integral machines. Most new reciprocating compression is and will be large, high-speed separable units. The major challenges with the fleet of slow-speed integral machines are: limited flexibility and a large range in performance. In an attempt to increase flexibility, many operators are choosing to single-act cylinders, which are causing reduced reliability and integrity. While the best performing units in the fleet exhibit thermal efficiencies between 90% and 92%, the low performers are running down to 50% with the mean at about 80%. The major cause for this large disparity is due to installation losses in the pulsation control system. In the better performers, the losses are about evenly split between installation losses and valve losses. The major challenges for high-speed machines are: cylinder nozzle pulsations, mechanical vibrations due to cylinder stretch, short valve life, and low thermal performance. To shift nozzle pulsation to higher orders, nozzles are shortened, and to dampen the amplitudes, orifices are added. The shortened nozzles result in mechanical coupling with the cylinder, thereby, causing increased vibration due to the cylinder stretch mode. Valve life is even shorter than for slow speeds and can be on the order of a few months. The thermal efficiency is 10% to 15% lower than slow-speed equipment with the best performance in the 75% to 80% range. The goal of this advanced reciprocating compression program is to develop the technology for both high speed and low speed compression that will expand unit flexibility, increase thermal efficiency, and increase reliability and integrity. Retrofit technologies that address the challenges of slow-speed integral compression are: (1) optimum turndown using a combination of speed and clearance with single-acting operation as a last resort; (2) if single-acting is required, implement infinite length nozzles to address nozzle pulsation and tunable side branch absorbers for 1x lateral pulsations; and (3) advanced valves, either the semi-active plate valve or the passive rotary valve, to extend valve life to three years with half the pressure drop. This next generation of slow-speed compression should attain 95% efficiency, a three-year valve life, and expanded turndown. New equipment technologies that address the challenges of large-horsepower, high-speed compression are: (1) optimum turndown with unit speed; (2) tapered nozzles to effectively reduce nozzle pulsation with half the pressure drop and minimization of mechanical cylinder stretch induced vibrations; (3) tunable side branch absorber or higher-order filter bottle to address lateral piping pulsations over the entire extended speed range with minimal pressure drop; and (4) semi-active plate valves or passive rotary valves to extend valve life with half the pressure drop. This next generation of large-horsepower, high-speed compression should attain 90% efficiency, a two-year valve life, 50% turndown, and less than 0.75 IPS vibration. This program has generated proof-of-concept technologies with the potential to meet these ambitious goals. Full development of these identified technologies is underway. The GMRC has committed to pursue the most promising enabling technologies for their industry.

Danny M. Deffenbaugh; Klaus Brun; Ralph E. Harris; J. Pete Harrell; Robert J. Mckee; J. Jeffrey Moore; Steven J. Svedeman; Anthony J. Smalley; Eugene L. Broerman; Robert A Hart; Marybeth G. Nored; Ryan S. Gernentz; Shane P. Siebenaler

2005-12-01T23:59:59.000Z

154

High temperature storage loop : final design report.  

SciTech Connect (OSTI)

A three year plan for thermal energy storage (TES) research was created at Sandia National Laboratories in the spring of 2012. This plan included a strategic goal of providing test capability for Sandia and for the nation in which to evaluate high temperature storage (>650%C2%B0C) technology. The plan was to scope, design, and build a flow loop that would be compatible with a multitude of high temperature heat transfer/storage fluids. The High Temperature Storage Loop (HTSL) would be reconfigurable so that it was useful for not only storage testing, but also for high temperature receiver testing and high efficiency power cycle testing as well. In that way, HTSL was part of a much larger strategy for Sandia to provide a research and testing platform that would be integral for the evaluation of individual technologies funded under the SunShot program. DOE's SunShot program seeks to reduce the price of solar technologies to 6/kWhr to be cost competitive with carbon-based fuels. The HTSL project sought to provide evaluation capability for these SunShot supported technologies. This report includes the scoping, design, and budgetary costing aspects of this effort

Gill, David Dennis; Kolb, William J.

2013-07-01T23:59:59.000Z

155

Swirling structure for mixing two concentric fluid flows at nozzle outlet  

DOE Patents [OSTI]

A nozzle device is described for causing two fluids to mix together. In particular, a spray nozzle comprises two hollow, concentric housings, an inner housing and an outer housing. The inner housing has a channel formed therethrough for a first fluid. Its outer surface cooperates with the interior surface of the outer housing to define the second channel for a second fluid. The outer surface of the inner housing and the inner surface of the outer housing each carry a plurality of vanes that interleave but do not touch, each vane of one housing being between two vanes of the other housing. The vanes are curved and the inner surface of the outer housing and the outer surface of the inner housing converge to narrow the second channel. The shape of second channel results in a swirling, accelerating second fluid that will impact the first fluid just past the end of the nozzle where mixing will take place.

Mensink, D.L.

1993-07-20T23:59:59.000Z

156

Study of deposit formation inside diesel injectors nozzles  

E-Print Network [OSTI]

Diesel engines are widely used in heavy duty transportation applications such as in trucks, buses and ships because of their reliability and high torque output. A key diesel technology is the injection system which is ...

Wang, YinChun, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

157

Dynamic PID loop control  

SciTech Connect (OSTI)

The Horizontal Test Stand (HTS) SRF Cavity and Cryomodule 1 (CM1) of eight 9-cell, 1.3GHz SRF cavities are operating at Fermilab. For the cryogenic control system, how to hold liquid level constant in the cryostat by regulation of its Joule-Thompson JT-valve is very important after cryostat cool down to 2.0 K. The 72-cell cryostat liquid level response generally takes a long time delay after regulating its JT-valve; therefore, typical PID control loop should result in some cryostat parameter oscillations. This paper presents a type of PID parameter self-optimal and Time-Delay control method used to reduce cryogenic system parameters oscillation.

Pei, L.; Klebaner, A.; Theilacker, J.; Soyars, W.; Martinez, A.; Bossert, R.; DeGraff, B.; Darve, C.; /Fermilab

2011-06-01T23:59:59.000Z

158

Approaching the Theoretical Limit of Diamagnetic-Induced Momentum in a Rapidly Diverging Magnetic Nozzle  

Science Journals Connector (OSTI)

Cross-field diffusion and plasma expansion in a rapidly diverging magnetic nozzle are controlled while maintaining constant plasma production in a contiguously attached radio frequency plasma source. It is demonstrated that the measured electron-diamagnetic-induced axial momentum increases with increasing magnetic field strength to approach the theoretical limit derived using an ideal nozzle approximation. The measured axial momentum exerted onto the axial and radial plasma source boundaries validate the prediction from a maximum electron pressure model on the back wall and from a zero net axial momentum model on the radial wall.

Kazunori Takahashi; Christine Charles; Rod W. Boswell

2013-05-08T23:59:59.000Z

159

Sodium loop framework structural analysis  

SciTech Connect (OSTI)

This document provides the structural analysis of the Sodium Loop framework in a drop condition. The drop is similar to the US Department of Transportation non-bulk, performance-oriented packaging (Packaging Group I) drop test. The drop height evaluated for the Sodium Loop framework is 5.9 ft.

Nguyen, P.M.

1995-06-06T23:59:59.000Z

160

Scaling of cosmic string loops  

E-Print Network [OSTI]

We study the spectrum of loops as a part of a complete network of cosmic strings in flat space-time. After a long transient regime, characterized by production of small loops at the scale of the initial conditions, it appears that a true scaling regime takes over. In the final regime the characteristic size of loops scales as $0.1 t$, and the production rate of small loops goes as $l^{-1.63}$. In the expanding universe, we expect similar behavior with perhaps a less negative index. For such indices, the distribution of loops existing at any given time goes as $l^{-5/2}$ in the radiation era and $l^{-2}$ in the matter era.

Vanchurin, V; Vilenkin, A; Olum, Ken D.; Vanchurin, Vitaly; Vilenkin, Alexander

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Jordan Loops Using Prover9/Mace4 to understand Jordan Loops  

E-Print Network [OSTI]

Jordan Loops Using Prover9/Mace4 to understand Jordan Loops Kyle Pula June 22nd, 2007 Kyle Pula Using Prover9/Mace4 to understand Jordan Loops #12;Jordan Loops Jordan Loops A loop is a set with binary) and x · e = e · x = x A Jordan loop is a commutative loop satisfying x2 y · x = x2 · yx (1) Kyle Pula

Veroff, Robert

162

New Developments in Closed Loop Combustion Control Using Flue Gas Analysis  

E-Print Network [OSTI]

New developments in closed loop combustion control are causing radical changes in the way combustion control systems are implemented. The recent availability of in line flue gas analyzers and microprocessor technology are teaming up to produce...

Nelson, R. L.

1981-01-01T23:59:59.000Z

163

Study on modification of Cu-based oxygen carrier for chemical looping combustion  

Science Journals Connector (OSTI)

Chemical looping combustion (CLC) is a promising technology for...2O4...spinel, formed after the first few redox cycles, which is responsible for promoting the thermal stability of the oxygen carriers. SEM result...

Hou-yin Zhao; Yan Cao; William Orndorff

2013-09-01T23:59:59.000Z

164

Separation of carbon dioxide with the use of chemical-looping combustion and gasification of fuels  

Science Journals Connector (OSTI)

Matters regarding using new technology for chemical-looping combustion of fuels for solving the problem of...2 (CO2 sequestration) are discussed. The primary results of investigations and possible schemes for imp...

G. A. Ryabov; O. M. Folomeev; D. S. Litun; D. A. Sankin

2009-06-01T23:59:59.000Z

165

Characteristics of the NiO/hexaaluminate for chemical looping combustion  

Science Journals Connector (OSTI)

Chemical looping combustion technology has drawn much attention due to...x formation and simple CO2...separation. The thermally stable oxygen carrier in the redox cycle at 1,0001,400 K is necessary for the chemical

Kwang Sup Song; Yong Seog Seo; Hyung Kee Yoon

2003-05-01T23:59:59.000Z

166

Rotary bed reactor for chemical-looping combustion with carbon capture  

E-Print Network [OSTI]

Chemical-looping combustion (CLC) is a novel and promising technology for power generation with inherent CO2 capture. Currently almost all the research has been focused on developing CLC based inter-connected fluidized bed ...

Zhao, Zhenlong

2012-01-01T23:59:59.000Z

167

THE JOURNAL OF CHEMICAL PHYSICS VOLUME 58, NUMBER 2 15 JANUARY 1973 Internal state distribution of alkali dimers in supersonic nozzle beams*  

E-Print Network [OSTI]

of alkali dimers in supersonic nozzle beams* M. P. Sinha, A. Schultzt, and R. N. Zare Department o the white light and laser-induced fluorescence excited in a nozzle beam of Na2 molecules, we have measured beams with various stagnation pressures (50-240 torr) of alkali metal and with nozzles of different

Zare, Richard N.

168

Consecutive Ion Activation for Top Down Mass Spectrometry:? Improved Protein Sequencing by Nozzle?Skimmer Dissociation  

Science Journals Connector (OSTI)

Mass spectra produced by nozzle?skimmer dissociation (NSD) have been little used in the past for structural characterization. NSD cannot be used on mass-separated ions (MS/MS), and for electrosprayed protein ions, previous NSD spectra showed backbone ...

Huili Zhai; Xuemei Han; Kathrin Breuker; Fred W. McLafferty

2005-08-20T23:59:59.000Z

169

LIQUID METAL ATOMIZATION USING CLOSE-COUPLED NOZZLES, 2 1 Copyright 2005 by Begell House, Inc.  

E-Print Network [OSTI]

particle size control and energy efficiency in this costly powder manufacturing process. INTRODUCTION to more effectively approach the problems of poor particle size control and low energy efficiency, bothLIQUID METAL ATOMIZATION USING CLOSE-COUPLED NOZZLES, 2 1 Copyright © 2005 by Begell House, Inc

Settles, Gary S.

170

Design and Simulation of a Passive-Scattering Nozzle in Proton Beam Radiotherapy  

E-Print Network [OSTI]

beam can be either a broad beam or a narrow beam. In this research, we mainly focused on the design and simulation of the broad beam produced by a passive double-scattering system in a treatment nozzle. The NEU codes package is a specialized design tool...

Guan, Fada

2010-07-14T23:59:59.000Z

171

Characterization and Optimization of a Powder Feed Nozzle for High Deposition Laser Cladding  

E-Print Network [OSTI]

175 Characterization and Optimization of a Powder Feed Nozzle for High Deposition Laser Cladding Abstract Laser cladding is a process for depositing corrosion resistant and wear resistant materials. With high deposition rate laser cladding, a powder mass is pre-placed in front of a scanned laser beam using

Omiecinski, Curtis

172

Divergence of a Propulsive Plasma Flow Expanding through a Magnetic Nozzle  

E-Print Network [OSTI]

Divergence of a Propulsive Plasma Flow Expanding through a Magnetic Nozzle IEPC-2009-260 Presented, September 20-24, 2009 Justin M. Little and Edgar Y. Choueiri Princeton University, Princeton, NJ, 08544, USA An analytical expression for the divergence angle of an energetic plasma exhaust plume emerging from

Choueiri, Edgar

173

Thermoelectric Power Generation System with Loop Thermosyphon...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Power Generation System with Loop Thermosyphon in Future High Efficiency Hybrid Vehicles Thermoelectric Power Generation System with Loop Thermosyphon in Future High Efficiency...

174

Experimental Program for the validation of the design of a 150KWth Chemical looping Combustion reactor system with main focus on the reactor flexibility and operability.  

E-Print Network [OSTI]

?? Chemical Looping Combustion is one of the most promising way to limit the CO2 release to the atmosphere among the other technologies for Carbon (more)

Ghorbaniyan, Masoud

2011-01-01T23:59:59.000Z

175

The characterisation of diesel nozzle flow using high speed imaging of elastic light scattering  

Science Journals Connector (OSTI)

Two identical, conventional six-hole, valve-covered orifice (VCO) diesel injectors have been modified in order to provide optical access to the region below the needle, and the nozzle-flow passages. This has been achieved through the removal of the metal tips, and their replacement with transparent acrylic tips of identical geometry. These two identical injectors were employed in order to offer comparability between the measurements. One of them had a dark, anodised inner surface at the base, while the other had a silvered inner surface at the base. Elastic scattering of incident white light from the internal cavitating flow inside the nozzle holes of the optically accessible diesel injector tips was captured on a high-speed electronic camera. The optical image data was obtained for three injector rail pressures ranging from 200bar to 400bar, and for five diesel fuels of varying density, viscosity, and distillation profile, in order to identify variations in cavitation flow behaviour inside the nozzle hole passages. A set of mean time-resolved diesel fuel flow images were obtained from 30 successive fuel injection pulses, for each operating condition, for each injector. The mean cavitation image occurring in the nozzle holes was converted to the mean proportion of nozzle hole area producing cavitation-induced optical scattering. The mean normalised area images were then analysed, and were able to demonstrate the anticipated inverse relationship between injected fuel mass and cavitation volume fraction (indicated by mean normalised area), and the effect of fuel viscosity and distillation profile on cavitation volume fraction (again indicated by mean normalised area).

R.D. Lockett; L. Liverani; D. Thaker; M. Jeshani; N.P. Tait

2013-01-01T23:59:59.000Z

176

Loop Quantum Gravity Phenomenology: Linking Loops to Observational Physics  

E-Print Network [OSTI]

Research during the last decade demonstrates that effects originating on the Planck scale are currently being tested in multiple observational contexts. In this review we discuss quantum gravity phenomenological models and their possible links to loop quantum gravity. Particle frameworks, including kinematic models, broken and deformed Poincar\\'e symmetry, non-commutative geometry, relative locality and generalized uncertainty principle, and field theory frameworks, including Lorentz violating operators in effective field theory and non-commutative field theory, are discussed. The arguments relating loop quantum gravity to models with modified dispersion relations are reviewed, as well as, arguments supporting the preservation of local Lorentz invariance. The phenomenology related to loop quantum cosmology is briefly reviewed, with a focus on possible effects that might be tested in the near future. As the discussion makes clear, there remains much interesting work to do in establishing the connection between the fundamental theory of loop quantum gravity and these specific phenomenological models, in determining observational consequences of the characteristic aspects of loop quantum gravity, and in further refining current observations. Open problems related to these developments are highlighted. characteristic aspects of loop quantum gravity, and in further refining current observations. Open problems related to these developments are highlighted.

Florian Girelli; Franz Hinterleitner; Seth A. Major

2012-12-13T23:59:59.000Z

177

Duct injection technology prototype development: Nozzle development Subtask 4.1, Atomizer specifications for duct injection technology. Topical report 8  

SciTech Connect (OSTI)

Babcock & Wilcox has conducted a program to identify atomizers appropriate for successful in-duct injection of humidification water and lime slurries. The purpose of this program was to identify and quantify atomizer spray and performance criteria that affect the operations and reliability of the in-duct SO{sub 2} removal process, and compare commercially available atomizers to these criteria.

Not Available

1992-02-01T23:59:59.000Z

178

Free loop spaces in topology and  

E-Print Network [OSTI]

Free loop spaces in topology and physics Kathryn Hess What is the space of free loops? Enumeration of geodesics Hochschild and cyclic homology Homological conformal field theories Free loop spaces in topology Meeting of the Edinburgh Mathematical Society Glasgow, 14 November 2008 #12;Free loop spaces in topology

Thévenaz, Jacques

179

Hybrid Vehicle Technology - Home  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

* Batteries * Batteries * Modeling * Testing Hydrogen & Fuel Cells Materials Modeling, Simulation & Software Plug-In Hybrid Electric Vehicles PSAT Smart Grid Student Competitions Technology Analysis Transportation Research and Analysis Computing Center Working With Argonne Contact TTRDC Hybrid Vehicle Technology revolutionize transportation Argonne's Research Argonne researchers are developing and testing various hybrid electric vehicles (HEVs) and their components to identify the technologies, configurations, and engine control strategies that provide the best combination of high fuel economy and low emissions. Vehicle Validation Argonne also serves as the lead laboratory for hardware-in-the-loop (HIL) and technology validation for the U.S. Department of Energy (DOE). HIL is a

180

Pomona Loop Baseline Performance Testing.PDF  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Pomona Loop Baseline Performance Testing Summary Pomona Loop Baseline Performance Testing Summary The U.S. Department of Energy's Field Operations Program sponsors the Urban and Freeway Pomona Loop range testing in Southern California. The testing is performed by one of the Program's testing partners, Southern California Edison. The vehicles are tested on local city streets (Urban Loop) and four highways (Freeway Loop). The Urban Loop is 19.3 miles long, ranging in elevation from 900 to 1500 feet, with approximately 50 stop signs and traffic lights. The Freeway Loop is 37.2 miles long, ranging in elevation from 700 to 1150 feet, and consists of four connected freeways shaped like a rectangle. When a vehicle is Pomona Loop tested, eight range tests are performed, with four tests on the Urban Loop and four on the Freeway Loop. The range tests are performed

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Conversion of coal to gasoline in one single synthesis loop  

SciTech Connect (OSTI)

The process scheme for the conversion of syngas to gasoline via methanol (MeOH) developed by Mobil consists in essence of two independent synthesis loops, a MeOH and a gasoline loop. The first is a conventional MeOH-plant which produces raw MeOH. The raw MeOH is evaporated into a second synthesis loop, the methanol to gasoline (MTG) synthesis. This scheme is already in commercial operation in New Zealand. The syngas is produced by steam reforming of natural gas. A further development of this technology based on integration of the two syntheses is demonstrated in the Topsoe-Integrated-Gasoline-Synthesis, TIGAS. The main difference between the two schemes is that in the TIGAS process, the two loops, the MeOH synthesis and the Mobil MTG-process, are integrated into one single synthesis loop without isolation of MeOH as an intermediate. This results in a simple flow scheme and, hence, in substantial savings in investments and energy consumption.

Topp-Jorgensen, J.; Rostrup-Nielsen, J.R.

1986-01-01T23:59:59.000Z

182

Cavitation regime detection through Proper Orthogonal Decomposition: dynamics analysis of the sheet cavity on a grooved convergent-divergent nozzle  

E-Print Network [OSTI]

in turbines and propellers is responsible for many issues like erosion, noise and vibrations. This two, like hydrofoils, convergent-divergent nozzles or on blades in turbines and propellers (Mejri et al

Paris-Sud XI, Université de

183

Failure Analysis of Nozzle Guide Vane of a Low Pressure Turbine in an Aero Gas Turbine Engine  

Science Journals Connector (OSTI)

Failure of low pressure turbine nozzle guide vane (NGV) in an aero gas turbine engine is analyzed to determine its root ... failure has caused extensive damages in low pressure turbine modules. Remedial measures ...

R. K. Mishra; Johney Thomas; K. Srinivasan

2014-10-01T23:59:59.000Z

184

Apparatus and method for mixing fuel in a gas turbine nozzle  

DOE Patents [OSTI]

A nozzle includes a fuel plenum and an air plenum downstream of the fuel plenum. A primary fuel channel includes an inlet in fluid communication with the fuel plenum and a primary air port in fluid communication with the air plenum. Secondary fuel channels radially outward of the primary fuel channel include a secondary fuel port in fluid communication with the fuel plenum. A shroud circumferentially surrounds the secondary fuel channels. A method for mixing fuel and air in a nozzle prior to combustion includes flowing fuel to a fuel plenum and flowing air to an air plenum downstream of the fuel plenum. The method further includes injecting fuel from the fuel plenum through a primary fuel passage, injecting fuel from the fuel plenum through secondary fuel passages, and injecting air from the air plenum through the primary fuel passage.

Johnson, Thomas Edward; Ziminsky, Willy Steve; Berry, Jonathan Dwight

2014-08-12T23:59:59.000Z

185

Simplified configuration for the combustor of an oil burner using a low pressure, high flow air-atomizing nozzle  

DOE Patents [OSTI]

The invention relates to clean burning of fuel oil with air. More specifically, to a fuel burning combustion head using a low-pressure, high air flow atomizing nozzle so that there will be a complete combustion of oil resulting in a minimum emission of pollutants. The improved fuel burner uses a low pressure air atomizing nozzle that does not result in the use of additional compressors or the introduction of pressurized gases downstream, nor does it require a complex design. Inventors:

Butcher, Thomas A. (Port Jefferson, NY); Celebi, Yusuf (Middle Island, NY); Fisher, Leonard (Colrain, MA)

2000-09-15T23:59:59.000Z

186

Chemical Looping Combustion of Biomass/Coal with Natural Iron Ore as Oxygen Carrier in a Continuous Reactor  

Science Journals Connector (OSTI)

Chemical Looping Combustion of Biomass/Coal with Natural Iron Ore as Oxygen Carrier in a Continuous Reactor ... Chemical looping combustion (CLC) is a new innovative technology with inherent separation of CO2 without energy penalty. ... Experiments on chemical looping combustion of biomass/coal were conducted in a 1 kWth continuous reactor, and an Australia iron ore was selected as oxygen carrier. ...

Haiming Gu; Laihong Shen; Jun Xiao; Siwen Zhang; Tao Song

2010-12-21T23:59:59.000Z

187

Thermodynamics in Loop Quantum Cosmology  

E-Print Network [OSTI]

Loop quantum cosmology (LQC) is very powerful to deal with the behavior of early universe. And the effective loop quantum cosmology gives a successful description of the universe in the semiclassical region. We consider the apparent horizon of the Friedmann-Robertson-Walker universe as a thermodynamical system and investigate the thermodynamics of LQC in the semiclassical region. The effective density and effective pressure in the modified Friedmann equation from LQC not only determine the evolution of the universe in LQC scenario but are actually also found to be the thermodynamic quantities. This result comes from the energy definition in cosmology (the Misner-Sharp gravitational energy) and is consistent with thermodynamic laws. We prove that within the framework of loop quantum cosmology, the elementary equation of equilibrium thermodynamics is still valid.

Li-Fang Li; Jian-Yang Zhu

2008-12-18T23:59:59.000Z

188

High flow rate nozzle system with production of uniform size droplets  

DOE Patents [OSTI]

Method steps for production of substantially uniform size droplets from a flow of liquid include forming the flow of liquid, periodically modulating the momentum of the flow of liquid in the flow direction at controlled frequency, generating a cross flow direction component of momentum and modulation of the cross flow momentum of liquid at substantially the same frequency and phase as the modulation of flow direction momentum, and spraying the so formed modulated flow through a first nozzle outlet to form a desired spray configuration. A second modulated flow through a second nozzle outlet is formed according to the same steps, and the first and second modulated flows impinge upon each other generating a liquid sheet. Nozzle apparatus for modulating each flow includes rotating valving plates interposed in the annular flow of liquid. The plates are formed with radial slots. Rotation of the rotating plates is separably controlled at differential angular velocities for a selected modulating frequency to achieve the target droplet size and production rate for a given flow. The counter rotating plates are spaced to achieve a desired amplitude of modulation in the flow direction, and the angular velocity of the downstream rotating plate is controlled to achieve the desired amplitude of modulation of momentum in the cross flow direction. Amplitude of modulation is set according to liquid viscosity.

Stockel, Ivar H. (Bangor, ME)

1990-01-01T23:59:59.000Z

189

Simulation of three-dimensional shear flow around a nozzle-afterbody at high speeds  

SciTech Connect (OSTI)

In this paper, turbulent shear flows at supersonic and hypersonic speeds around a nozzle-afterbody are simulated. The three-dimensional, Reynolds-averaged Navier-Stokes equations are solved by a finite-volume and implicit method. The convective and the pressure terms are differenced by an upwind-biased algorithm. The effect of turbulence is incorporated by a modified Baldwin-Lomax eddy viscosity model. The success of the standard Baldwin-Lomax model for this flow type is shown by comparing it to a laminar case. These modifications made to the model are also shown to improve flow prediction when compared to the standard Baldwin-Lomax model. These modifications to the model reflect the effects of high compressibility, multiple walls, vortices near walls, and turbulent memory effects in the shear layer. This numerically simulated complex flowfield includes a supersonic duct flow, a hypersonic flow over an external double corner, a flow through a non-axisymmetric, internal-external nozzle, and a three-dimensional shear layer. The specific application is for the flow around the nozzle-afterbody of a generic hypersonic vehicle powered by a scramjet engine. The computed pressure distributions compared favorably with the experimentally obtained surface and off-surface flow surveys.

Baysal, O.; Hoffman, W.B. (Mechanical Engineering and Mechanics Dept., Old Dominion Univ., Norfolk, VA (United States))

1992-06-01T23:59:59.000Z

190

High flow rate nozzle system with production of uniform size droplets  

DOE Patents [OSTI]

Method steps for production of substantially uniform size droplets from a flow of liquid include forming the flow of liquid, periodically modulating the momentum of the flow of liquid in the flow direction at controlled frequency, generating a cross flow direction component of momentum and modulation of the cross flow momentum of liquid at substantially the same frequency and phase as the modulation of flow direction momentum, and spraying the so formed modulated flow through a first nozzle outlet to form a desired spray configuration. A second modulated flow through a second nozzle outlet is formed according to the same steps, and the first and second modulated flows impinge upon each other generating a liquid sheet. Nozzle apparatus for modulating each flow includes rotating valving plates interposed in the annular flow of liquid. The plates are formed with radial slots. Rotation of the rotating plates is separably controlled at differential angular velocities for a selected modulating frequency to achieve the target droplet size and production rate for a given flow. The counter rotating plates are spaced to achieve a desired amplitude of modulation in the flow direction, and the angular velocity of the downstream rotating plate is controlled to achieve the desired amplitude of modulation of momentum in the cross flow direction. Amplitude of modulation is set according to liquid viscosity. 5 figs.

Stockel, I.H.

1990-10-16T23:59:59.000Z

191

Copper-Decorated Hematite as an Oxygen Carrier for in Situ Gasification Chemical Looping Combustion of Coal  

Science Journals Connector (OSTI)

Copper-Decorated Hematite as an Oxygen Carrier for in Situ Gasification Chemical Looping Combustion of Coal ... State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074 Hubei, Peoples Republic of China ... Iron ore is a cheap and nontoxic oxygen carrier in chemical looping combustion (CLC) systems. ...

Weijing Yang; Haibo Zhao; Jinchen Ma; Daofeng Mei; Chuguang Zheng

2014-05-12T23:59:59.000Z

192

Parallel MATLAB: Parallel For Loops  

E-Print Network [OSTI]

Parallel MATLAB: Parallel For Loops John Burkardt (FSU) Gene Cliff (AOE/ICAM - ecliff Research Computing ICAM: Interdisciplinary Center for Applied Mathematics 1 / 69 #12;MATLAB Parallel Example ODE SWEEP Example FMINCON Example Conclusion 2 / 69 #12;INTRO: Parallel MATLAB Parallel MATLAB

Crawford, T. Daniel

193

DURABILITY OF VERY LOW CAPACITY PRESSURE ATOMIZED FUEL NOZZLES USED WITH LOW FIRING RATE RESIDENTIAL OIL BURNERS.  

SciTech Connect (OSTI)

Brookhaven National Laboratory (BNL), working for the United States Department of Energy (DOE), has conducted a preliminary evaluation of the potential of very low fuel input capacity Simplex type pressure atomizing nozzles for use with oil burners designed for residential boilers, furnaces and water heaters. These nozzles under suitable conditions can be sufficiently reliable to enable new heating system designs. This would allow for the design of heating appliances that match the smaller load demands of energy efficient homes built with modern components and architectural systems designed to minimize energy use. When heating systems are installed with excessive capacity, oversized by three to four times the load, the result is a loss of up to ten percent as compared to the rated appliance efficiency. The use of low capacity nozzles in systems designed to closely match the load can thereby result in significant energy savings. BNL investigated the limitations of low flow rate nozzles and designed long-term experiments to see if ways could be determined that would be beneficial to long-term operation at low input capacities without failures. In order to maximize the potential for success the best possible industry practices available were employed. Low flow rate nozzles primarily fail by blockage or partial blockage of internal fuel flow passages inside the nozzle. To prevent any contaminants from entering the nozzle BNL investigated the geometry and critical dimensions and the current sate of the art of fuel filter design. Based on this investigation it was concluded that the best available filters should be more than capable of filtering contaminants from the fuel prior to entering the oil burner itself. This position was indeed validated based on the long-term trials conducted under this study no evidence resulted to change our position. It is highly recommended that these filters rated at 10 microns and with large filter capacity (surface area), should be used with all oil burner installations. The other possible failure mode had been attributed to fuel degradation and this became the main focus of the evaluation. The degradation of fuel usually occurs faster under higher temperature conditions. To preclude this as much as possible controls that provided for a post-purge of combustion airflow after burner shut down were selected. This provided a short period of time where the burner's combustion air blower continues to operate after the flame has gone out. This tends to cool the nozzle and in turn the fuel inside the small flow pathways inside the nozzle components. This study concludes that the use of low capacity nozzles is possible but only when the temperature and thermal mass environment of the combustion chamber result in a relatively ''cool'' condition. This was accomplished in one long-term experiment that essentially operated for a full heating season equivalent with no evidence of nozzle plugging or failure. The nozzle body surface temperature was kept at or below 150 F during the duration of the trial. On the other hand, a second system was studied that ended in a partial nozzle blockage and a system failure. In this ''hot environment'' system the nozzle body temperature reached 210 F. This occurred at close to a full heating season equivalent, yet it still would have resulted in a no-heat complaint by the homeowner.

MCDONALD,R.J.

2007-05-01T23:59:59.000Z

194

CNCC Craig Campus Geothermal Program: 82-well closed loop GHP well field to  

Open Energy Info (EERE)

CNCC Craig Campus Geothermal Program: 82-well closed loop GHP well field to CNCC Craig Campus Geothermal Program: 82-well closed loop GHP well field to provide geothermal energy as a common utility for a new community college campus. Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title CNCC Craig Campus Geothermal Program: 82-well closed loop GHP well field to provide geothermal energy as a common utility for a new community college campus. Project Type / Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type / Topic 2 Topic Area 1: Technology Demonstration Projects Project Description This "geothermal central plant" concept will provide ground source loop energy as a utility to be shared by the academic and residential buildings on the soon-to-be-constructed campus.

195

Detecting and escaping infinite loops using Bolt  

E-Print Network [OSTI]

In this thesis we present Bolt, a novel system for escaping infinite loops. If a user suspects that an executing program is stuck in an infinite loop, the user can use the Bolt user interface, which attaches to the running ...

Kling, Michael (Michael W.)

2012-01-01T23:59:59.000Z

196

Video looping of human cyclic motion  

E-Print Network [OSTI]

In this thesis, a system called Video Looping is developed to analyze human cyclic motions. Video Looping allows users to extract human cyclic motion from a given video sequence. This system analyzes similarities from a large amount of live footage...

Choi, Hye Mee

2004-09-30T23:59:59.000Z

197

Effects of Steam and CO2 in the Fluidizing Gas when Using Bituminous Coal in Chemical-Looping Combustion  

Science Journals Connector (OSTI)

Chemical-looping combustion (CLC) is a combustion technology where an oxygen carrier is used to transfer oxygen from the combustion air to the fuel in order to...2 is inherently separated from the flue gases with...

H. Leion; A. Lyngfelt; T. Mattisson

2010-01-01T23:59:59.000Z

198

Syngas-fueled, chemical-looping combustion-based power plant lay-out for clean energy generation  

Science Journals Connector (OSTI)

Of the various clean combustion technologies with carbon capture and sequestration (CCS) possibilities, chemical-looping combustion (CLC) promises to be an efficient...2 compression to 110bar to facilitate CCS.

R. J. Basavaraj; S. Jayanti

2014-05-01T23:59:59.000Z

199

Chemical looping combustion of high-sulfur coal with NiFe2O4-combined oxygen carrier  

Science Journals Connector (OSTI)

Chemical looping combustion (CLC) of coal has gained increasing attention as a novel combustion technology for its attractive advantage in the...2. In relative to the single metal oxide-based oxygen carrier (OC),...

Baowen Wang; Gan Xiao; Xiaoyong Song

2014-12-01T23:59:59.000Z

200

Evaluation of CuAl2O4 as an Oxygen Carrier in Chemical-Looping Combustion  

Science Journals Connector (OSTI)

Evaluation of CuAl2O4 as an Oxygen Carrier in Chemical-Looping Combustion ... Department of Chemical and Biological Engineering, Division of Environmental Inorganic Chemistry, Chalmers University of Technology, SE-412 96 Gteborg, Sweden ...

Mehdi Arjmand; Abdul-Majeed Azad; Henrik Leion; Tobias Mattisson; Anders Lyngfelt

2012-10-03T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Rotary bed reactor for chemical-looping combustion with carbon capture ; Rotary bed reactor for CLC with carbon capture .  

E-Print Network [OSTI]

??Chemical-looping combustion (CLC) is a novel and promising technology for power generation with inherent CO2 capture. Currently almost all the research has been focused on (more)

Zhao, Zhenlong

2012-01-01T23:59:59.000Z

202

Scalable boson-sampling with time-bin encoding using a loop-based architecture  

E-Print Network [OSTI]

We present an architecture for arbitrarily scalable boson-sampling using two nested fiber loops. The architecture has fixed experimental complexity, irrespective of the size of the desired interferometer, whose scale is limited only by fiber and switch loss rates. The architecture employs time-bin encoding, whereby the incident photons form a pulse train, which enters the loops. Dynamically controlled loop coupling ratios allow the construction of the arbitrary linear optics interferometers required for boson-sampling. The architecture employs only a single point of interference and may thus be easier to stabilize than other approaches. The scheme has polynomial complexity and could be realized using demonstrated present-day technologies.

Keith R. Motes; Alexei Gilchrist; Jonathan P. Dowling; Peter P. Rohde

2014-03-17T23:59:59.000Z

203

Hard thermal loops in static external fields  

E-Print Network [OSTI]

We study, in the imaginary-time formalism, the high temperature behavior of n-point thermal loops in static Yang-Mills and gravitational fields. We show that in this regime, any hard thermal loop gives the same leading contribution as the one obtained by evaluating the loop at zero external energies and momenta.

J. Frenkel; S. H. Pereira; N. Takahashi

2009-02-04T23:59:59.000Z

204

Hard thermal loops in static external fields  

SciTech Connect (OSTI)

We examine, in the imaginary-time formalism, the high temperature behavior of n-point thermal loops in static Yang-Mills and gravitational fields. We show that in this regime, any hard thermal loop gives the same leading contribution as the one obtained by evaluating the loop integral at zero external energies and momenta.

Frenkel, J.; Takahashi, N. [Universidade de Sao Paulo, Instituto de Fisica Rua do Matao, Travessa R, 187-05508-090 Cidade Universitaria, Sao Paulo, SP (Brazil); Pereira, S. H. [Universidade de Sao Paulo, Instituto de Astronomia, Geofisica e Ciencias Atmosfericas Rua do Matao, 1226-05508-090 Cidade Universitaria, Sao Paulo, SP (Brazil)

2009-04-15T23:59:59.000Z

205

Development of procedure for and results from calculated study of thermal state of turbine first-stage nozzle vanes and efficiency of their convective-film air cooling  

Science Journals Connector (OSTI)

Information on the development of a comprehensive procedure for calculating a nozzle vane with convective-film cooling and on its hydraulic, thermal, and strength characteristics is presented.

K. D. Andreev; A. V. Lipin; V. G. Polishchuk; N. P. Sokolov

2009-07-01T23:59:59.000Z

206

Grain boundary loops in graphene  

Science Journals Connector (OSTI)

Topological defects can affect the physical properties of graphene in unexpected ways. Harnessing their influence may lead to enhanced control of both material strength and electrical properties. Here we present a class of topological defects in graphene composed of a rotating sequence of dislocations that close on themselves, forming grain boundary loops that either conserve the number of atoms in the hexagonal lattice or accommodate vacancy or interstitial reconstruction, while leaving no unsatisfied bonds. One grain boundary loop is observed as a flower pattern in scanning tunneling microscopy studies of epitaxial graphene grown on SiC(0001). We show that the flower defect has the lowest energy per dislocation core of any known topological defect in graphene, providing a natural explanation for its growth via the coalescence of mobile dislocations.

Eric Cockayne; Gregory M. Rutter; Nathan P. Guisinger; Jason N. Crain; Phillip N. First; Joseph A. Stroscio

2011-05-12T23:59:59.000Z

207

Modeling Plasma Flow in a Magnetic Nozzle with the Lattice-Boltzmann Method  

E-Print Network [OSTI]

and is important in boundary layer analysis under the effects of magnetic fields [6]. 2B l N u??= 0 0 B LH ???= Plasma detachment mechanics Magnetic nozzles must accelerate plasma to high velocities while also inducing detachment of the plasma particles... Permeability k Boltzmann?s Constant r Radial Distance E Electric Field B Magnetic Field n Plasma Particle Density v,u Velocity Components vA Alfv?n Velocity rL Larmor Radius ?F Fluid Relaxation Time ?B Magnetic Field...

Ebersohn, Frans Hendrik

2010-07-14T23:59:59.000Z

208

Dimpled/grooved face on a fuel injection nozzle body for flame stabilization and related method  

DOE Patents [OSTI]

A fuel injection head for a fuel nozzle used in a gas turbine combustor includes a substantially hollow body formed with an upstream end face, a downstream end face and a peripheral wall extending therebetween. A plurality of pre-mix tubes or passages extend axially through the hollow body with inlets at the upstream end face and outlets at the downstream end face. An exterior surface of the downstream end face is formed with three-dimensional surface features that increase a total surface area of the exterior surface as compared to a substantially flat, planar downstream end face.

Uhm, Jong Ho; Johnson, Thomas Edward; Kim, Kwanwoo; Zuo, Baifang

2013-08-20T23:59:59.000Z

209

Oscillation damping of chiral string loops  

E-Print Network [OSTI]

Chiral cosmic string loop tends to the stationary (vorton) configuration due to the energy loss into the gravitational and electromagnetic radiation. We describe the asymptotic behaviour of near stationary chiral loops and their fading to vortons. General limits on the gravitational and electromagnetic energy losses by near stationary chiral loops are found. For these loops we estimate the oscillation damping time. We present solvable examples of gravitational radiation energy loss by some chiral loop configurations. The analytical dependence of string energy with time is found in the case of the chiral ring with small amplitude radial oscillations.

Eugeny Babichev; Vyacheslav Dokuchaev

2002-04-26T23:59:59.000Z

210

Apparatus and process for depositing hard coating in a nozzle orifice  

DOE Patents [OSTI]

The present invention is directed to a process for coating the interior surfaces of an orifice in a substrate that forms a slurry fuel injection nozzle. In a specific embodiment, the nozzle is part of a fuel injection system for metering a coal-water slurry into a large, medium-speed, multi-cylinder diesel engine. In order to retard erosion of the orifice, the substrate is placed in a chemical vapor deposition (CVD) reaction chamber. A reaction gas is passed into the chamber at a gas temperature below its reaction temperature and is directed through the orifice in the substrate. The gas reaction temperature is a temperature at and above which the reaction gas deposits as a coating, and the reaction gas is of a composition whereby improved resistance to erosion by flow of the particulates in the slurry fuel is imparted by the deposited coating. Only the portion of the substrate in proximity to the orifice to be coated is selectively heated to at least the gas reaction temperature for effecting coating of the orifice's interior surfaces by the vapor deposited coating formed from the reaction gas.

Flynn, Paul L. (Fairview, PA); Giammarise, Anthony W. (Erie, PA)

1994-01-01T23:59:59.000Z

211

Fast valve and nozzle for gas-puff operation of dense plasma focus  

Science Journals Connector (OSTI)

A simple and reliable valve and nozzle system for a very fast injection of gas has been designed and constructed for its use in gas-puff mode of dense plasma focus experiments. It delivers a very quick rise time: 55 ? s . The pressure measured in our setup at a distance of 15 mm from the nozzle output is about 0.285 mbar with a plenum pressure of 3 bars (absolute). The time between the valve aperture and pressure front arrival is 360 ? s . This result comes up as an average of about a hundred measurements. The energy input is 95 J (270 V on a 3000 ? F capacitor bank). The typical dimensions of the valve are 52 mm in diameter and 80 mm in length. The entire volume of the valve is then very small. The relative low pressure and voltage operation are significant advantages of this development. The performance of the valve satisfactorily fulfills the objectives of gas-puff plasma focus operation.

Mara M. Milanese; Jorge O. Pouzo; Osvaldo D. Cortzar; Roberto L. Moroso

2006-01-01T23:59:59.000Z

212

Commercial Vehicle Classification System using Advanced Inductive Loop Technology  

E-Print Network [OSTI]

Platform Enclosed Van Drop Frame Van 40' Container 20' Container Auto Transport Chemical /Platform Enclosed Van Drop Frame Van 40' Container 20' Container Auto Transport Chemical /Platform Image source: http://www.overbilttrailers.com T7 Auto Transport Image source: http://www.trailersforless.com T3 Enclosed Van Image source: http://www.scientificbrake.com T8 Chemical/

Tok, Yeow Chern Andre

2008-01-01T23:59:59.000Z

213

Battery Hardware in the Loop  

Broader source: Energy.gov [DOE]

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

214

6/10/12 Revolutionary ultrasonic nozzle changes the way water cleans 1/5www.londonpressservice.org.uk/lps/tradeindustry/item/298440.html  

E-Print Network [OSTI]

that improve our ability to clean while saving on our most important resources, water and energy6/10/12 Revolutionary ultrasonic nozzle changes the way water cleans 1/5www.londonpressservice.org.uk/lps/tradeindustry/item/298440.html Revolutionary ultrasonic nozzle changes the way water cleans 02 May 2012 by Brian Bell

Sóbester, András

215

Proceedings of the 8th National Thermal Spray Conference Sept. 11-15 1995 Houston, Texas THE INFLUENCE OF NOZZLE DESIGN ON HVOF SPRAY PARTICLE VELOCITY AND  

E-Print Network [OSTI]

THE INFLUENCE OF NOZZLE DESIGN ON HVOF SPRAY PARTICLE VELOCITY AND TEMPERATURE C.M. Hackett and G.S. Settles of HVOF nozzle gas dynamics on spray particle velocity and temperature, which are expected to influence. In addition, HVOF spray particle acceleration and heating are numerically modeled, and these results

Settles, Gary S.

216

Wilson loop and contour shapes  

Science Journals Connector (OSTI)

By computing the Wilson loop expectation value W[C] in the two-dimensional Schwinger model on R1S1, we show that nonleading terms depend on the shape of the contours both on R1R1 and R1S1. We also find that the rhombic contour and triangular contour lead to the same static potentials both on R1R1 and R1S1. The binding energy is also affected by the choice of contour shapes on the R1S1 model. This indicates that the model on R1S1 deserves more study.

W. F. Kao

1990-12-15T23:59:59.000Z

217

Scaling Solution for Small Cosmic String Loops  

Science Journals Connector (OSTI)

The equation governing the time evolution of the number density of loops in a cosmic string network is a detailed balance determined by energy conservation. We solve this equation with the inclusion of the gravitational radiation effect, which causes the loops to shrink (and eventually decay) as time elapses. The solution approaches a scaling regime in which the total energy density in loops remains finite, converging both in the infrared and in the ultraviolet.

Jorge V. Rocha

2008-02-21T23:59:59.000Z

218

Cosmic string loops, large and small  

Science Journals Connector (OSTI)

We extend our earlier model of the small-scale structure of cosmic string networks through an improved treatment of the separation of long and short scales. We find that the production of small loops (at the gravitational radiation scale) is a robust feature of string networks, in addition to a population of loops near the horizon scale. We obtain quantitative agreement with the scaling of loop production functions as found in simulations by two groups.

Florian Dubath; Joseph Polchinski; Jorge V. Rocha

2008-06-23T23:59:59.000Z

219

The conformal loop ensemble nesting field  

E-Print Network [OSTI]

The conformal loop ensemble CLE$_\\kappa$ with parameter $8/3 nesting field. We generalize this result by assigning i.i.d. weights to the loops, and we treat an alternate notion of convergence to the nesting field in the case where the weight distribution has mean zero. We also establish estimates for moments of the number of CLE loops surrounding two given points.

Jason Miller; Samuel S. Watson; David B. Wilson

2014-12-21T23:59:59.000Z

220

Chemical Looping Combustion Reactions and Systems  

SciTech Connect (OSTI)

Chemical Looping Combustion (CLC) is one promising fuel-combustion technology, which can facilitate economic CO2 capture in coal-fired power plants. It employs the oxidation/reduction characteristics of a metal, or oxygen carrier, and its oxide, the oxidizing gas (typically air) and the fuel source may be kept separate. This work focused on two classes of oxygen carrier, one that merely undergoes a change in oxidation state, such as Fe3O4/Fe2O3 and one that is converted from its higher to its lower oxidation state by the release of oxygen on heating, i.e., CuO/Cu2O. This topical report discusses the results of four complementary efforts: (1) the development of process and economic models to optimize important design considerations, such as oxygen carrier circulation rate, temperature, residence time; (2) the development of high-performance simulation capabilities for fluidized beds and the collection, parameter identification, and preliminary verification/uncertainty quantification (3) the exploration of operating characteristics in the laboratory-scale bubbling bed reactor, with a focus on the oxygen carrier performance, including reactivity, oxygen carrying capacity, attrition resistance, resistance to deactivation, cost and availability (4) the identification of mechanisms and rates for the copper, cuprous oxide, and cupric oxide system using thermogravimetric analysis.

Sarofim, Adel; Lighty, JoAnn; Smith, Philip; Whitty, Kevin; Eyring, Edward; Sahir, Asad; Alvarez, Milo; Hradisky, Michael; Clayton, Chris; Konya, Gabor; Baracki, Richard; Kelly, Kerry

2011-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Wilson loop dependence on the contour shape  

Science Journals Connector (OSTI)

By computing exactly the Wilson loop expectation value for two-dimensional quantum electrodynamics, we show that the nonleading terms depend drastically on the shape of the contour.

H. A. Falomir, R. E. Gamboa Sarav, and F. A. Schaposnik

1982-01-15T23:59:59.000Z

222

ENGINEERING TECHNOLOGY Engineering Technology  

E-Print Network [OSTI]

, Mechatronics Technology, and Renewable Energy Technology. Career Opportunities Graduates of four: business administration, wind farm management, aircraft maintenance, tooling production, quality and safety or selected program track focus. Transfer students must talk to their advisor about transferring their courses

223

ENGINEERING TECHNOLOGY Engineering Technology  

E-Print Network [OSTI]

: business administration, energy management, wind farm management, automation and controls, aircraft, Mechatronics Technology, and Renewable Energy Technology. Career Opportunities Graduates of four students must talk to their advisor about transferring their courses over for WSU credit. Laboratory

224

Building Technologies Office: Emerging Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Emerging Technologies Emerging Technologies Printable Version Share this resource Send a link to Building Technologies Office: Emerging Technologies to someone by E-mail Share Building Technologies Office: Emerging Technologies on Facebook Tweet about Building Technologies Office: Emerging Technologies on Twitter Bookmark Building Technologies Office: Emerging Technologies on Google Bookmark Building Technologies Office: Emerging Technologies on Delicious Rank Building Technologies Office: Emerging Technologies on Digg Find More places to share Building Technologies Office: Emerging Technologies on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Technology Research, Standards, & Codes Popular Links Success Stories Previous Next Lighten Energy Loads with System Design.

225

Loop calculus for lattice gauge theories  

Science Journals Connector (OSTI)

Hamiltonian calculations are performed using a loop-labeled basis where the full set of identities for the SU(N) gauge models has been incorporated. The loops are classified as clusterlike structures and the eigenvalue problem leads to a linear set of finite-difference equations easily amenable to numerical treatment. Encouraging results are reported for SU(2) at spatial dimension 2.

Rodolfo Gambini; Lorenzo Leal; Antoni Trias

1989-05-15T23:59:59.000Z

226

Chemical Looping Combustion Reactions and Systems  

SciTech Connect (OSTI)

Chemical Looping Combustion (CLC) is one promising fuel-combustion technology, which can facilitate economic CO{sub 2} capture in coal-fired power plants. It employs the oxidation/reduction characteristics of a metal, or oxygen carrier, and its oxide, the oxidizing gas (typically air) and the fuel source may be kept separate. This topical report discusses the results of four complementary efforts: (5.1) the development of process and economic models to optimize important design considerations, such as oxygen carrier circulation rate, temperature, residence time; (5.2) the development of high-performance simulation capabilities for fluidized beds and the collection, parameter identification, and preliminary verification/uncertainty quantification; (5.3) the exploration of operating characteristics in the laboratoryscale bubbling bed reactor, with a focus on the oxygen carrier performance, including reactivity, oxygen carrying capacity, attrition resistance, resistance to deactivation, cost and availability; and (5.4) the identification of kinetic data for copper-based oxygen carriers as well as the development and analysis of supported copper oxygen carrier material. Subtask 5.1 focused on the development of kinetic expressions for the Chemical Looping with Oxygen Uncoupling (CLOU) process and validating them with reported literature data. The kinetic expressions were incorporated into a process model for determination of reactor size and oxygen carrier circulation for the CLOU process using ASPEN PLUS. An ASPEN PLUS process model was also developed using literature data for the CLC process employing an iron-based oxygen carrier, and the results of the process model have been utilized to perform a relative economic comparison. In Subtask 5.2, the investigators studied the trade-off between modeling approaches and available simulations tools. They quantified uncertainty in the high-performance computing (HPC) simulation tools for CLC bed applications. Furthermore, they performed a sensitivity analysis for velocity, height and polydispersity and compared results against literature data for experimental studies of CLC beds with no reaction. Finally, they present an optimization space using simple non-reactive configurations. In Subtask 5.3, through a series of experimental studies, behavior of a variety of oxygen carriers with different loadings and manufacturing techniques was evaluated under both oxidizing and reducing conditions. The influences of temperature, degree of carrier conversion and thermodynamic driving force resulting from the difference between equilibrium and system O{sub 2} partial pressures were evaluated through several experimental campaigns, and generalized models accounting for these influences were developed to describe oxidation and oxygen release. Conversion of three solid fuels with widely ranging reactivities was studied in a small fluidized bed system, and all but the least reactive fuel (petcoke) were rapidly converted by oxygen liberated from the CLOU carrier. Attrition propensity of a variety of carriers was also studied, and the carriers produced by freeze granulation or impregnation of preformed substrates displayed the lowest rates of attrition. Subtask 5.4 focused on gathering kinetic data for a copper-based oxygen carrier to assist with modeling of a functioning chemical looping reactor. The kinetics team was also responsible for the development and analysis of supported copper oxygen carrier material.

Sarofim, Adel; Lighty, JoAnn; Smith, Philip; Whitty, Kevin; Eyring, Edward; Sahir, Asad; Alvarez, Milo; Hradisky, Michael; Clayton, Chris; Konya, Gabor; Baracki, Richard; Kelly, Kerry

2014-03-01T23:59:59.000Z

227

Computational fluid dynamic simulations of chemical looping fuel reactors utilizing gaseous fuels  

SciTech Connect (OSTI)

A computational fluid dynamic(CFD) model for the fuel reactor of chemical looping combustion technology has been developed,withspecialfocusonaccuratelyrepresentingtheheterogeneous chemicalreactions.Acontinuumtwo-fluidmodelwasusedtodescribeboththegasandsolidphases. Detailedsub-modelstoaccountforfluidparticleandparticleparticleinteractionforceswerealso incorporated.Twoexperimentalcaseswereanalyzedinthisstudy(Son andKim,2006; Mattisonetal., 2001). SimulationswerecarriedouttotestthecapabilityoftheCFDmodeltocapturechangesinoutletgas concentrationswithchangesinnumberofparameterssuchassuperficialvelocity,metaloxide concentration,reactortemperature,etc.Fortheexperimentsof Mattissonetal.(2001), detailedtime varyingoutletconcentrationvalueswerecompared,anditwasfoundthatCFDsimulationsprovideda reasonablematchwiththisdata.

Mahalatkar, K.; Kuhlman, J.; Huckaby, E.D.; O'Brien, T.

2011-01-01T23:59:59.000Z

228

Single-loop controllers bring boilers in line  

SciTech Connect (OSTI)

The boiler process seems simple. Some type of fuel is burned in the presence of air, forming heat and combustion gases. The heat is then absorbed by the boiler drum and transferred to the water inside. The heated water changes to steam and is exhausted, which spins an electrical turbine that produces electricity, and exhausts lower pressure steam for condensing in the process. Although this process seems simple, anything could go wrong at any time. The flame could go out, the fuel could run low, or the drum could get dirty. Let`s take a look at how to avoid these problems. The first step is to take accurate measurements. Typically, these measurements include flow, pressure, conductivity, temperature, stack analysis, and a level or two. Ambient conditions can affect performance of each measuring device, so be sure to consider the hot, drafty conditions of boiler houses when selecting/installing devices. The second step is to bring the measurement signals back to the control room. Use two-wire, loop-powered devices to transmit all signals except the stack analysis signals. Two-wire, loop-powered technology increases reliability, lowers installation costs, and eliminates ground loops. Signal conditioning takes place at the microcontroller input points. Signal conditioning is done to provide a linear, overall loop response to the controller. It also simplified measurement. Examining four types of input signal characterization will help explain the signal conditioning process. The first signal is a zero-based pressure signal with a linear characteristic. The second is a temperature measurement made by a thermocouple whose output is nonlinear. Next is a flow measurement made with a conventional d/p cell and orifice plate. It needs a square root characterization. Last is a combustion air flow measurement from the pressure drop across part of the boiler or preheater. This flow measurement is quite tricky because of a large deviation from the simple square root relationship.

Harrelson, D.; Piechota, B.

1995-08-01T23:59:59.000Z

229

E-Print Network 3.0 - arbitrary control loop Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

5 > >> 1 Optimizing Nested Loops with Loop Distribution and Loop Fusion Department of Computer Science and Engineering Summary: . Mckinley. Loop distribution with arbitrary control...

230

Reactivity of a CaSO4-oxygen carrier in chemical-looping combustion of methane in a fixed bed reactor  

Science Journals Connector (OSTI)

Chemical-looping combustion (CLC) is a promising technology for the combustion of gas or solid fuel with efficient...2. A reactivity study of CaSO4 oxygen carrier in CLC of methane was conducted in a laboratory s...

Qilei Song; Rui Xiao; Zhongyi Deng; Laihong Shen

2009-03-01T23:59:59.000Z

231

Effective direct chemical looping coal combustion with bi-metallic FeCu oxygen carriers studied using TG-MS techniques  

Science Journals Connector (OSTI)

This paper contains the results of research on a promising combustion technology known as chemical looping combustion (CLC). The noteworthy advantage of CLC...2 stream can be obtained after water condensation wit...

Ewelina Ksepko; Grzegorz ?abojko

2014-07-01T23:59:59.000Z

232

IKEA's New Store in Colorado to Feature Geothermal System | Department...  

Broader source: Energy.gov (indexed) [DOE]

Articles Blue flame generated by natural gas. Geek-Up08.27.10 -- Geothermal Stores, Graphene Loops, Nozzle Technology and the 1918 El Nio Geothermal Heating and Cooling Systems...

233

The Impact of Information Technologies on Air Transportation  

E-Print Network [OSTI]

The Air Transportation System and several key subsystems including the Aircraft, Airline, and Air Traffic Management are modeled as interacting control loops. The impact of Information Technologies on each of these subsystems ...

Hansman, R. John

234

Ultra-High Pressure Driver and Nozzle Survivability in the RDHWT/MARIAH II Hypersonic Wind Tunnel  

SciTech Connect (OSTI)

An ultra-high pressure device provides a high enthalpy (> 2500 kJ/kg), low entropy (< 5 kJ/kg-K) air source for the RDHWT/MARIAH II Program Medium Scale Hypersonic Wind Tunnel. The design uses stagnation conditions of 2300 MPa (330,000 Psi) and 750 K (900 F) in a radial configuration of intensifiers around an axial manifold to deliver pure air at 100 kg/s mass flow rates for run times suitable for aerodynamic, combustion, and test and evaluation applications. Helium injection upstream of the nozzle throat reduces the throat wall recovery temperature to about 1200 K and reduces the oxygen concentration at the nozzle wall.

Costantino, M.; Brown, G.; Raman, K.; Miles, R.; Felderman, J.

2000-06-02T23:59:59.000Z

235

Modulation of DNA loop lifetimes by the free energy of loop formation  

E-Print Network [OSTI]

Storage and retrieval of the genetic information in cells is a dynamic process that requires the DNA to undergo dramatic structural rearrangements. DNA looping is a prominent example of such a structural rearrangement that is essential for transcriptional regulation in both prokaryotes and eukaryotes, and the speed of such regulations affects the fitness of individuals. Here, we examine the in vitro looping dynamics of the classic Lac repressor gene-regulatory motif. We show that both loop association and loop dissociation at the DNA-repressor junctions depend on the elastic deformation of the DNA and protein, and that both looping and unlooping rates approximately scale with the looping J factor, which reflects the system's deformation free energy. We explain this observation by transition state theory and model the DNA-protein complex as an effective worm-like chain with twist. We introduce a finite protein-DNA binding interaction length, in competition with the characteristic DNA deformation length scale, ...

Chen, Yi-Ju; Mulligan, Peter; Spakowitz, Andrew J; Phillips, Rob

2015-01-01T23:59:59.000Z

236

Detecting and escaping infinite loops with jolt  

E-Print Network [OSTI]

Infinite loops can make applications unresponsive. Potential problems include lost work or output, denied access to application functionality, and a lack of responses to urgent events. We present Jolt, a novel system for ...

Carbin, Michael James

237

FCH Optical Phase-Locked Loop  

E-Print Network [OSTI]

¦ î ¤ ü ? ø Ð Ð ú ¸ ? í ® FCH Optical Phase- Locked Loop? ? û ³ è Optimization of Optica1 Phase

Choi, Woo-Young

238

Illusory spirals and loops in crystal growth  

Science Journals Connector (OSTI)

...spirals and loops in crystal growth 10.1073/pnas.1311637110 Alexander G. Shtukenberg Zina Zhu Zhihua An Misha Bhandari Pengcheng Song Bart Kahr Michael D. Ward Molecular Design Institute and Department of Chemistry, New York University, New York...

Alexander G. Shtukenberg; Zina Zhu; Zhihua An; Misha Bhandari; Pengcheng Song; Bart Kahr; Michael D. Ward

2013-01-01T23:59:59.000Z

239

Hysteresis loop area of the Ising model  

Science Journals Connector (OSTI)

The hysteresis of the Ising model in a spatially homogeneous ac field is studied using both mean-field calculations and two-dimensional Monte Carlo simulations. The frequency dispersion and the temperature dependence of the hysteresis loop area are studied in relation to the dynamic symmetry loss. The dynamic mechanisms may be different when the hysteresis loops are symmetric or asymmetric, and they can lead to a double-peak frequency dispersion and qualitatively different temperature dependence.

Han Zhu; Shuai Dong; J.-M. Liu

2004-10-12T23:59:59.000Z

240

From Inductance Loops to Vehicle Trajectories  

E-Print Network [OSTI]

to Vehicle Trajectories ­ p.2/19 #12;Birmingham Box motorway system 000000 111111 00 0000 11 1111 J4 J5 J6-identification for e.g. incident detection) From Inductance Loops to Vehicle Trajectories ­ p.8/19 #12;6 sites ? 20sFrom Inductance Loops to Vehicle Trajectories R. Eddie Wilson, University of Bristol EPSRC Advanced

Bertini, Robert L.

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Quantum Kinematics of Bosonic Vortex Loops  

SciTech Connect (OSTI)

Poisson structure for vortex filaments (loops and arcs) in 2D ideal incompressible fluid is analyzed in detail. Canonical coordinates and momenta on coadjoint orbits of the area-preserving diffeomorphism group, associated with such vortices, are found. The quantum space of states in the simplest case of ''bosonic'' vortex loops is built within a geometric quantization approach to the description of a quantum fluid. Fock-like structure and non-local creation and annihilation operators of quantum vortex filaments are introduced.

Goldin, G.A.; Owczarek, R.; Sharp, D.H.

1999-05-06T23:59:59.000Z

242

Physical characteristics of gliding arc discharge plasma generated in a laval nozzle  

SciTech Connect (OSTI)

The dynamic behavior of gliding arc discharge generated in a Laval nozzle has been investigated by electrical diagnostics and a high-speed camera. The results show that the voltage waveform keeps the initial shape as the gas flow rate is small, while it becomes less stable with increasing flow rate. During the first half of a cycle, the voltage rises and after that it decreases. In nitrogen and oxygen, the break down voltage for the arc is between 3.3 and 5.5 kV, while it is between 3.3-7.5 kV in air. The waveform of current I remains almost stable; and for nitrogen and oxygen, the maximum value of current I is between 0.28 and 0.46 A. With increasing flow rate, the power consumption in air first increases and then decreases; it remains in the range of 110-217 W, and gradually increases in nitrogen and oxygen. The power consumption in oxygen is lower than that in nitrogen; the input of the energy density decreases with increasing flow rate for all the three gases. The development of the arc is tracked and recorded by a high-speed camera. The cycle is stable at 10 ms for flow rates up to 1 m{sup 3} h{sup -1}. At a higher flow rate, the cycle becomes unstable.

Lu, S. Y.; Sun, X. M.; Li, X. D.; Yan, J. H. [State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027 (China); Du, C. M. [School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275 (China)

2012-07-15T23:59:59.000Z

243

Prefilming twin-fluid nozzle assisted precipitation method for preparing nanocrystalline HNS and its characterization  

Science Journals Connector (OSTI)

The ultra-fine HNS (2,2?,4,4?,6,6?-hexanitrostilbene) with desired properties is needed for military and civilian applications because of its reliable threshold energy to short impulse shock waves and its excellent thermal and shock stability. This paper reports on prefilming twin-fluid nozzle assisted precipitation (PTFN-P) to obtain ultra-fine HNS explosive with high specific surface area (SSA), high purity, and narrow particle size distribution. The properties of ultra-fine HNS have been confirmed by SEM, BET, HPLC, XRD, DSC and TGA-SDTA. SEM photograph revealed that the PTFN-P process offers ellipsoid crystalline morphology with particle size of 90150nm. The BET and Langmuir SSA of nanocrystalline HNS with purity of 99.44wt.% were determined to be 19.28m2/g and 29.26m2/g, respectively. The XRD peaks of nanocrystalline HNS seemed to have similar diffraction angles as those of synthesized HNS, and the weakening of peak strength was observed apparently. DSC results of the nanocrystalline HNS showed that the exothermic decomposing at the temperature range of 323398C. Furthermore, HNS samples were submitted to impact and small scale gap test and the results indicated that nanocrystalline HNS is less sensitive than synthesized HNS (50?m) to impact and shock stimuli.

JingYu Wang; Hao Huang; Wen Zheng Xu; Yu Ruo Zhang; Bin Lu; Rui Zheng Xie; Peiyong Wang; Ni Yun

2009-01-01T23:59:59.000Z

244

Process For Controlling Flow Rate Of Viscous Materials Including Use Of Nozzle With Changeable Openings  

DOE Patents [OSTI]

Apparatus and a method for controlling the flow rate of viscous materials through a nozzle includes an apertured main body and an apertured end cap coupled together and having an elongated, linear flow channel extending the length thereof. An end of the main body is disposed within the end cap and includes a plurality of elongated slots concentrically disposed about and aligned with the flow channel. A generally flat cam plate having a center aperture is disposed between the main body and end cap and is rotatable about the flow channel. A plurality of flow control vane assemblies are concentrically disposed about the flow channel and are coupled to the cam plate. Each vane assembly includes a vane element disposed adjacent the end of the flow channel. Rotation of the cam plate in a first direction causes a corresponding rotation of each of the vane elements for positioning the individual vane elements over the aperture in the end cap blocking flow through the flow channel, while rotation in an opposite direction removes the vane elements from the aperture and positions them about the flow channel in a nested configuration in the full open position, with a continuous range of vane element positions available between the full open and closed positions.

Ellingson, William A. (Naperville, IL); Forster, George A. (Westmont, IL)

1999-11-02T23:59:59.000Z

245

Chemical Looping for Pre-combustion CO2 Capture Performance and Cost Analysis  

Science Journals Connector (OSTI)

Abstract The objective of this paper is to compare the two technologies chemical looping combustion (CLC) for inherent CO2-capture, and Calcium looping-based (CaL) CO2-capture when applied to a coal-based IGCC power plant, in terms of system efficiency, overall plant efficiency, CO2-capture percentage and cost. It was found that a CLC-based CO2 capture system is more efficient than a CaL-based CO2 capture system. However, both the chemical looping processes lead to higher efficiencies than a conventional solvent-based pre-combustion CO2 capture. The capital cost and cost of electricity of the CLC-based CO2- capture power plant were also found to be lower than a conventional pre-combustion CO2-capture for an IGCC power plant.

Hari C. Mantripragada; Edward S. Rubin

2013-01-01T23:59:59.000Z

246

Chapter 7 - Chemical-looping processes for fuel-flexible combustion and fuel production  

Science Journals Connector (OSTI)

Abstract Chemical-Looping Combustion (CLC) is a rapidly emerging technology for clean combustion of fossil and renewable fuels. In CLC, the combustion of a fuel is broken down into two, spatially separated steps: The oxidation of fuel in contact with an oxygen carrier (typically a metal oxide), and the subsequent reoxidation of the carrier with air. CLC thus produces sequestration-ready CO2 streams with only minor efficiency penalties for CO2 capture. While recent interest in chemical looping was almost exclusively focused on combustion, the underlying reaction engineering principle forms a flexible platform for fuel conversion with a long history in chemical engineering. This chapter gives a brief review of the status of chemical-looping processes for fuel conversion, focused predominantly on reforming and partial oxidation of fossil and renewable fuels and on the impact of fuel composition on combustion.

Saurabh Bhavsar; Michelle Najera; Amey More; Gtz Veser

2014-01-01T23:59:59.000Z

247

USING MODEL CHECKING TO DERIVE LOOP BOUNDS OF GENERAL LOOPS WITHIN ANSI-C APPLICATIONS FOR  

E-Print Network [OSTI]

USING MODEL CHECKING TO DERIVE LOOP BOUNDS OF GENERAL LOOPS WITHIN ANSI-C APPLICATIONS for applications written in ANSI-C. The described method uses a model checker and a binary search algorithm with little pro- gramming effort for applications written in ANSI-C. The performance is probably inferior

248

Towards LHC phenomenology at the loop level: A new method for one-loop amplitudes  

E-Print Network [OSTI]

A precise understanding of LHC phenomenology requires the inclusion of one-loop corrections for multi-particle final states. In this talk we describe a semi-numerical method to compute one-loop amplitudes with many external particles and present first applications.

T. Binoth; M. Ciccolini; G. Heinrich

2006-01-30T23:59:59.000Z

249

Chemical Looping Combustion System-Fuel Reactor Modeling  

SciTech Connect (OSTI)

Chemical looping combustion (CLC) is a process in which an oxygen carrier is used for fuel combustion instead of air or pure oxygen as shown in the figure below. The combustion is split into air and fuel reactors where the oxidation of the oxygen carrier and the reduction of the oxidized metal occur respectively. The CLC system provides a sequestration-ready CO2 stream with no additional energy required for separation. This major advantage places combustion looping at the leading edge of a possible shift in strict control of CO2 emissions from power plants. Research in this novel technology has been focused in three distinct areas: techno-economic evaluations, integration of the system into power plant concepts, and experimental development of oxygen carrier metals such as Fe, Ni, Mn, Cu, and Ca. Our recent thorough literature review shows that multiphase fluid dynamics modeling for CLC is not available in the open literature. Here, we have modified the MFIX code to model fluid dynamic in the fuel reactor. A computer generated movie of our simulation shows bubble behavior consistent with experimental observations.

Gamwo, I.K.; Jung, J. (ANL); Anderson, R.R.; Soong, Y.

2007-04-01T23:59:59.000Z

250

Dry dilution refrigerator with 4He-1K-loop  

E-Print Network [OSTI]

In this article we summarize experimental work on cryogen-free 3He/4He dilution refrigerators which, in addition to the dilution refrigeration circuit, are equipped with a 4He-1K-stage. This type of DR becomes worth considering when high cooling capacities are needed at T ~ 1 K to cool cold amplifiers and heat sink cables. In our application, the motivation for the construction of this type of cryostat was to do experiments on superconducting quantum circuits for quantum information technology and quantum simulations. In other work, DRs with 1K-stage were proposed for astro-physical cryostats. For neutron scattering research, a top-loading cryogen-free DR with 1K-stage was built which was equipped with a standard commercial dilution refrigeration insert. Cooling powers of up to 100 mW have been reached with our 1K-stage, but higher refrigeration powers were achieved with more powerful pulse tube cryocoolers and higher 4He circulation rates in the 1K-loop. Several different versions of a 1K-loop have been test...

Uhlig, Kurt

2014-01-01T23:59:59.000Z

251

Model based Open-loop Correction of Heliostat Tracking Errors  

Science Journals Connector (OSTI)

Abstract The heliostat field is by far the most expensive part of a typical Central Receiver (CR) plant. To achieve high conversion efficiencies, heliostats with very high tracking accuracy are needed, but errors are introduced due to manufacturing-, installation- and alignment tolerances as well control system granularity. Mechanical error profiles are unique for every heliostat and cause tracking errors that vary over the course of days and seasons and therefore cannot be corrected by once-off angle offset corrections. Developments in microcontroller technology drives decentralization of CR control systems. Powerful open-loop error correction algorithms can run on low cost heliostat local controllers, enabling high tracking accuracy from lower cost heliostats with reduced tolerances. A prototype array of 18 heliostats, each 1 ft2 in size, was constructed to validate the field control system functionality and final tracking accuracy. Tests were conducted at SU's solar laboratory with an 18m tower and heliostat slant ranges of around 40 m. Prototype experiments indicate a daily open-loop RMS normal vector tracking error below 1 mrad. Strong correlation exists between successive days residual error curves, indicating that further model refinements may be possible, including frequency spectrum analysis (using FFT) to identify and correct for mechanism-specific periodic drivetrain errors.

K. Malan; P. Gauch

2014-01-01T23:59:59.000Z

252

Technology Transfer: Available Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Please refer to the list of technologies below for licensing and research Please refer to the list of technologies below for licensing and research collaboration availability. If you can't find the technology you're interested in, please contact us at TTD@lbl.gov. Biotechnology and Medicine DIAGNOSTICS AND THERAPEUTICS CANCER CANCER PROGNOSTICS 14-3-3 Sigma as a Biomarker of Basal Breast Cancer ANXA9: A Therapeutic Target and Predictive Marker for Early Detection of Aggressive Breast Cancer Biomarkers for Predicting Breast Cancer Patient Response to PARP Inhibitors Breast Cancer Recurrence Risk Analysis Using Selected Gene Expression Comprehensive Prognostic Markers and Therapeutic Targets for Drug-Resistant Breast Cancers Diagnostic Test to Personalize Therapy Using Platinum-based Anticancer Drugs Early Detection of Metastatic Cancer Progenitor Cells

253

Technology Transfer: Available Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Software and Information Technologies Software and Information Technologies Algorithm for Correcting Detector Nonlinearites Chatelet: More Accurate Modeling for Oil, Gas or Geothermal Well Production Collective Memory Transfers for Multi-Core Processors Energy Efficiency Software EnergyPlus:Energy Simulation Software for Buildings Tools, Guides and Software to Support the Design and Operation of Energy Efficient Buildings Flexible Bandwidth Reservations for Data Transfer Genomic and Proteomic Software LABELIT - Software for Macromolecular Diffraction Data Processing PHENIX - Software for Computational Crystallography Vista/AVID: Visualization and Allignment Software for Comparative Genomics Geophysical Software Accurate Identification, Imaging, and Monitoring of Fluid Saturated Underground Reservoirs

254

Torus knot polynomials and susy Wilson loops  

E-Print Network [OSTI]

We give, using an explicit expression obtained in [V. Jones, Ann. of Math. 126, 335 (1987)], a basic hypergeometric representation of the HOMFLY polynomial of $(n,m)$ torus knots, and present a number of equivalent expressions, all related by Heine's transformations. Using this result the $(m,n)\\leftrightarrow (n,m)$ symmetry and the leading polynomial at large $N$ are explicit. We show the latter to be the Wilson loop of 2d Yang-Mills theory on the plane. In addition, after taking one winding to infinity, it becomes the Wilson loop in the zero instanton sector of the 2d Yang-Mills theory, which is known to give averages of Wilson loops in $\\mathcal{N}$=4 SYM theory. We also give, using matrix models, an interpretation of the HOMFLY polynomial and the corresponding Jones-Rosso representation in terms of $q$-harmonic oscillators.

Georgios Giasemidis; Miguel Tierz

2014-01-31T23:59:59.000Z

255

Torus knot polynomials and susy Wilson loops  

E-Print Network [OSTI]

We give, using an explicit expression obtained in [V. Jones, Ann. of Math. 126, 335 (1987)], a basic hypergeometric representation of the HOMFLY polynomial of $(n,m)$ torus knots, and present a number of equivalent expressions, all related by Heine's transformations. Using this result the $(m,n)\\leftrightarrow (n,m)$ symmetry and the leading polynomial at large $N$ are explicit. We show the latter to be the Wilson loop of 2d Yang-Mills theory on the plane. In addition, after taking one winding to infinity, it becomes the Wilson loop in the zero instanton sector of the 2d Yang-Mills theory, which is known to give averages of Wilson loops in $\\mathcal{N}$=4 SYM theory. We also give, using matrix models, an interpretation of the HOMFLY polynomial and the corresponding Jones-Rosso representation in terms of $q$-harmonic oscillators.

Giasemidis, Georgios

2014-01-01T23:59:59.000Z

256

Bimetallic Fe-Ni Oxygen Carriers for Chemical Looping Combustion  

SciTech Connect (OSTI)

The relative abundance, low cost, and low toxicity of iron make Fe-based oxygen carriers of great interest for chemical looping combustion (CLC), an emerging technology for clean and efficient combustion of fossil and renewable fuels. However, Fe also shows much lower reactivity than other metals (such as Ni and Cu). Here, we demonstrate strong improvement of Fe-based carriers by alloying the metal phase with Ni. Through a combination of carrier synthesis and characterization with thermogravimetric and fixed-bed reactor studies, we demonstrate that the addition of Ni results in a significant enhancement in activity as well as an increase in selectivity for total oxidation. Furthermore, comparing alumina and ceria as support materials highlights the fact that reducible supports can result in a strong increase in oxygen carrier utilization.

Bhavsar, Saurabh; Veser, Goetz

2013-11-06T23:59:59.000Z

257

Loop quantum gravity - a short review  

E-Print Network [OSTI]

In this article we review the foundations and the present status of loop quantum gravity. It is short and relatively non-technical, the emphasis is on the ideas, and the flavor of the techniques. In particular, we describe the kinematical quantization and the implementation of the Hamilton constraint, as well as the quantum theory of black hole horizons, semiclassical states, and matter propagation. Spin foam models and loop quantum cosmology are mentioned only in passing, as these will be covered in separate reviews to be published alongside this one.

Sahlmann, Hanno

2010-01-01T23:59:59.000Z

258

Non-standard loop quantum cosmology  

E-Print Network [OSTI]

We present results concerning the nature of the cosmological big bounce(BB) transition within the loop geometry underlying loop quantum cosmology (LQC). Our canonical quantization method is an alternative to the standard LQC. An evolution parameter we use has clear interpretation both at classical and quantum levels. The physical volume operator has discrete spectrum which is bounded from below. The minimum gap in the spectrum defines a quantum of the volume. The spectra of operators are parametrized by a free parameter to be determined.

Wlodzimierz Piechocki

2010-01-19T23:59:59.000Z

259

Automation of one-loop QCD corrections  

E-Print Network [OSTI]

We present the complete automation of the computation of one-loop QCD corrections, including UV renormalization, to an arbitrary scattering process in the Standard Model. This is achieved by embedding the OPP integrand reduction technique, as implemented in CutTools, into the MadGraph framework. By interfacing the tool so constructed, which we dub MadLoop, with MadFKS, the fully automatic computation of any infrared-safe observable at the next-to-leading order in QCD is attained. We demonstrate the flexibility and the reach of our method by calculating the production rates for a variety of processes at the 7 TeV LHC.

Valentin Hirschi; Rikkert Frederix; Stefano Frixione; Maria Vittoria Garzelli; Fabio Maltoni; Roberto Pittau

2011-03-03T23:59:59.000Z

260

Review of industry efforts to manage pressurized water reactor feedwater nozzle, piping, and feedring cracking and wall thinning  

SciTech Connect (OSTI)

This report presents a review of nuclear industry efforts to manage thermal fatigue, flow-accelerated corrosion, and water hammer damage to pressurized water reactor (PWR) feedwater nozzles, piping, and feedrings. The review includes an evaluation of design modifications, operating procedure changes, augmented inspection and monitoring programs, and mitigation, repair and replacement activities. Four actions were taken: (a) review of field experience to identify trends of operating events, (b) review of technical literature, (c) visits to PWR plants and a PWR vendor, and (d) solicitation of information from 8 other countries. Assessment of field experience is that licensees have apparently taken sufficient action to minimize feedwater nozzle cracking caused by thermal fatigue and wall thinning of J-tubes and feedwater piping. Specific industry actions to minimize the wall-thinning in feedrings and thermal sleeves were not found, but visual inspection and necessary repairs are being performed. Assessment of field experience indicates that licensees have taken sufficient action to minimize steam generator water hammer in both top-feed and preheat steam generators. Industry efforts to minimize multiple check valve failures that have allowed backflow of steam from a steam generator and have played a major role in several steam generator water hammer events were not evaluated. A major finding of this review is that analysis, inspection, monitoring, mitigation, and replacement techniques have been developed for managing thermal fatigue and flow-accelerated corrosion damage to feedwater nozzles, piping, and feedrings. Adequate training and appropriate applications of these techniques would ensure effective management of this damage.

Shah, V.N.; Ware, A.G.; Porter, A.M.

1997-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Emerging Technologies  

Broader source: Energy.gov [DOE]

The Emerging Technologies (ET) Program of the Building Technologies Office (BTO) supports applied research and development (R&D) for technologies, systems, and models that contribute to building energy consumption.

262

Floating Refrigerant Loop Based on R-134a Refrigerant Cooling of High-Heat Flux Electronics  

SciTech Connect (OSTI)

The Oak Ridge National Laboratory (ORNL) Power Electronics and Electric Machinery Research Center (PEEMRC) have been developing technologies to address the thermal issues associated with hybrid vehicles. Removal of the heat generated from electrical losses in traction motors and their associated power electronics is essential for the reliable operation of motors and power electronics. As part of a larger thermal control project, which includes shrinking inverter size and direct cooling of electronics, ORNL has developed U.S. Patent No. 6,772,603 B2, ''Methods and Apparatus for Thermal Management of Vehicle Systems and Components'' [1], and patent pending, ''Floating Loop System for Cooling Integrated Motors and Inverters Using Hot Liquid Refrigerant'' [2]. The floating-loop system provides a large coefficient of performance (COP) for hybrid-drive component cooling. This loop (based on R-134a) is integrated with a vehicle's existing air-conditioning (AC) condenser, which dissipates waste heat to the ambient air. Because the temperature requirements for cooling of power electronics and electric machines are not as low as that required for passenger compartment air, this adjoining loop can operate on the high-pressure side of the existing AC system. This arrangement also allows the floating loop to run without the need for the compressor and only needs a small pump to move the liquid refrigerant. For the design to be viable, the loop must not adversely affect the existing system. The loop should also provide a high COP, a flat-temperature profile, and low-pressure drop. To date, the floating-loop test prototype has successfully removed 2 kW of heat load in a 9 kW automobile passenger AC system with and without the automotive AC system running. The COP for the tested floating-loop system ranges from 40-45, as compared to a typical AC system COP of about 2-4. The estimated required waste-heat load for future hybrid applications is 5.5 kW and the existing system could be easily scaleable for this larger load.

Lowe, K.T.

2005-10-07T23:59:59.000Z

263

Technology Transfer  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Technology Transfer Since 1974, the Federal Laboratory Consortium (FLC) Award for Excellence in Technology Transfer has recognized scientists and engineers at federal government...

264

Tools & Technologies  

Broader source: Energy.gov [DOE]

Weprovide leadership for transforming workforce development through the power of technology. It develops corporate educational technology policy and enables the use of learning tools and...

265

Technology Transfer: Available Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ion Sources and Beam Technologies Ion Sources and Beam Technologies GENERATORS AND DETECTORS Compact, Safe and Energy Efficient Neutron Generator Fast Pulsed Neutron Generator High Energy Gamma Generator Lithium-Drifted Silicon Detector with Segmented Contacts Low Power, High Energy Gamma Ray Detector Calibration Device Nested Type Coaxial Neutron Generator Neutron and Proton Generators: Cylindrical Neutron Generator with Nested Option, IB-1764 Neutron-based System for Nondestructive Imaging, IB-1794 Mini Neutron Tube, IB-1793a Ultra-short Ion and Neutron Pulse Production, IB-1707 Mini Neutron Generator, IB-1793b Compact Spherical Neutron Generator, IB-1675 Plasma-Driven Neutron/Gamma Generators Portable, Low-cost Gamma Source for Active Interrogation ION SOURCES WITH ANTENNAS External Antenna for Ion Sources

266

Wilson-Loop Symmetry Breaking Reexamined  

E-Print Network [OSTI]

The splitting in energy of gauge field vacua on the non-simply connected space $S^3/Z_2$ is reconsidered. We show the calculation to the one-loop level for a Yang-Mills vector with a ghost field. We confirm our previous result and give a solution to the question posed by Freire, Rom\\~ao and Barroso.

Atsushi Nakamula; Kiyoshi Shiraishi

2014-11-25T23:59:59.000Z

267

Parallel MATLAB at VT: Parallel For Loops  

E-Print Network [OSTI]

Parallel MATLAB at VT: Parallel For Loops John Burkardt (FSU) Gene Cliff (AOE/ICAM - ecliff Research Computing ICAM: Interdisciplinary Center for Applied Mathematics 1 / 72 #12;MATLAB Parallel Example ODE SWEEP Example FMINCON Example Conclusion 2 / 72 #12;INTRO: Parallel MATLAB Parallel MATLAB

Crawford, T. Daniel

268

Parallel MATLAB at VT: Parallel For Loops  

E-Print Network [OSTI]

Parallel MATLAB at VT: Parallel For Loops John Burkardt (FSU) Gene Cliff (AOE/ICAM - ecliff Research Computing ICAM: Interdisciplinary Center for Applied Mathematics 1 / 71 #12;MATLAB Parallel Example ODE SWEEP Example FMINCON Example Conclusion 2 / 71 #12;INTRO: Parallel MATLAB Parallel MATLAB

Crawford, T. Daniel

269

Parallel MATLAB at VT: Parallel For Loops  

E-Print Network [OSTI]

Parallel MATLAB at VT: Parallel For Loops John Burkardt (FSU) Gene Cliff (AOE/ICAM - ecliff Research Computing ICAM: Interdisciplinary Center for Applied Mathematics 1 / 56 #12;Matlab Parallel ODE SWEEP Example MD Example Conclusion 2 / 56 #12;INTRO: Parallel Matlab In a previous lecture we

Crawford, T. Daniel

270

Free Steiner Loops Smile Markovski, Ana Sokolova  

E-Print Network [OSTI]

Free Steiner Loops Smile Markovski, Ana Sokolova Faculty of Sciences and Mathematics, Institute and finite sloops. Two constructions of free objects in the variety of sloops are pre­ sented in this paper. They both allow recursive construction of a free sloop with a free base X, provided that X is recursively

Sokolova, Ana

271

One Loop Renormalization of Fermilab Fermions  

E-Print Network [OSTI]

We discuss the current status of our automatic perturbation theory program as applied to Fermilab Fermions. We give an overview of our methods, a discussion of tree level matching, and one loop results for the coefficients of the higher dimension kinetic operators.

Matthew Nobes; Howard Trottier

2002-09-02T23:59:59.000Z

272

Closed-loop control of a SCR system using a NOx sensor cross-sensitive to NH3  

E-Print Network [OSTI]

Closed-loop control of a SCR system using a NOx sensor cross-sensitive to NH3 A.Bonfils , Y. Creff for an automotive selective catalytic reduction (SCR) system, for which the feedback is based on a NOx sensor the variety of en- countered technologies, selective catalytic reduction (SCR) is one of the most appealing

273

A Voltage Controlled Oscillator for a Phase-Locked Loop Frequency Synthesizer in a Silicon-on-Sapphire Process  

E-Print Network [OSTI]

in a Low-Temperature Co-fired Ceramic (LTCC) Multi-Chip Module. The integrated circuit technology chosen for the Phase-Locked Loop Frequency Synthesizer portion of the telemetry transmitter was a 0.25 um CMOS process that utilizes a sapphire substrate...

Garrison, Sean Michael

2009-05-22T23:59:59.000Z

274

Exploration Technologies Technology Needs Assessment  

Broader source: Energy.gov [DOE]

The Exploration Technologies Needs Assessment is a critical component of ongoing technology roadmapping efforts, and will be used to guide the program's research and development.

275

Loop simulation capability for sodium-cooled systems  

E-Print Network [OSTI]

A one-dimensional loop simulation capability has been implemented in the thermal-hydraulic analysis code, THERMIT-4E. This code had been used to simulate and investigate flow in test sections of experimental sodium loops ...

Adekugbe, Oluwole A.

1984-01-01T23:59:59.000Z

276

Chemical looping combustion of coal in interconnected fluidized beds  

Science Journals Connector (OSTI)

Chemical looping combustion is the indirect combustion by use of oxygen carrier. It can...2...capture in power generating processes. In this paper, chemical looping combustion of coal in interconnected fluidized ...

LaiHong Shen; Min Zheng; Jun Xiao; Hui Zhang

2007-04-01T23:59:59.000Z

277

Prediction of short loops in intrinsically disordered proteins  

Science Journals Connector (OSTI)

A new possibility of predicting short disordered regions (loops) at a small window ... As demonstrated with the example of three G proteins, FoldUnfold predicted almost all existing loops at ... to determine the ...

E. I. Deryusheva; O. V. Galzitskaya; I. N. Serdyuk

2008-12-01T23:59:59.000Z

278

Thalamocortical Loops and Information Processing 2427 Thalamocortical Dysrhythmia  

E-Print Network [OSTI]

T Thalamocortical Loops and Information Processing 2427 Thalamocortical Dysrhythmia Synonyms TCD) the production of low-threshold calcium spike bursts by deinactiva- tion of calcium T-channels, discharging. Corticothalamic and Thalamocortical Interactions Thalamocortical Loops and Information Processing S. MURRAY

Sherman, S. Murray

279

DOE/NETL ADVANCED COMBUSTION SYSTEMS: CHEMICAL LOOPING SUMMARY  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

-OSU-Coal%20Direct%20Chem%20Looping.pdf. Fan, L.-S., "Chemical Looping Systems for Fossil Energy Conversions," John Wiley & Sons, Inc., Hoboken, NJ, USA, October 2010. http:...

280

Breakout Session: Getting in the Loop: PV Hardware Recycling...  

Broader source: Energy.gov (indexed) [DOE]

Getting in the Loop: PV Hardware Recycling and Sustainability Breakout Session: Getting in the Loop: PV Hardware Recycling and Sustainability May 21, 2014 6:30PM to 7:30PM PDT...

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Energy Technologies  

Broader source: Energy.gov [DOE]

Best practices, project resources, and other tools on energy efficiency and renewable energy technologies.

282

A Destructive Validation of NDE Responses of Service-Induced PWSCC Found in North Anna 2 Control Rod Drive Nozzle 31  

SciTech Connect (OSTI)

Studies conducted at the Pacific Northwest National Laboratory (PNNL) in Richland, Washington focused on assessing the effectiveness of nondestructive examination (NDE) techniques for inspecting control rod drive mechanism (CRDM) nozzles and J-groove weldments. The primary objective of this work is to provide information to the United States Nuclear Regulatory Commission (NRC) on the effectiveness of NDE methods as related to the in-service inspection of CRDM nozzles and J-groove weldments, and to enhance the knowledge base of primary water stress corrosion cracking (PWSCC) through destructive characterization of the CRDM assemblies.

Cumblidge, Stephen E.; Doctor, Steven R.; Schuster, George J.; Harris, Robert V.; Crawford, Susan L.; Seffens, Rob J.; Toloczko, Mychailo B.; Bruemmer, Stephen M.; Moyer, C.

2009-07-01T23:59:59.000Z

283

Open versus closed loop capacity equilibria in electricity markets ...  

E-Print Network [OSTI]

ity expansion problem in liberalized electricity markets. The first is an open loop equilibrium model, where generation companies simultaneously choose.

2012-05-06T23:59:59.000Z

284

HEMISPHERIC CENTER FOR ENVIRONMENTAL TECHNOLOGY  

SciTech Connect (OSTI)

FIU-HCET participated in an ICT meeting at Mound during the second week of December and presented a brief videotape of the testing of the Robotic Climber technology. During this meeting, FIU-HCET proposed the TechXtract technology for possible testing at Mound and agreed to develop a five-page proposal for review by team members. FIU-HCET provided assistance to Bartlett Inc. and General Lasertronics Corporation in developing a proposal for a Program Opportunity Notice (PON). The proposal was submitted by these companies on January 5, 1999. The search for new equipment dismantlement technologies is continuing. The following vendors have responded to requests for demonstration: LUMONICS, Laser Solutions technology; CRYO-BEAM, Cryogenic cutting technology; Waterjet Technology Association, Waterjet Cutting technology; and DIAJET, Waterjet Cutting technology. Based on the tasks done in FY98, FIU-HCET is working closely with Numatec Hanford Corporation (NHC) and Pacific Northwest National Laboratory (PNNL) to revise the plan and scope of work of the pipeline plugging project in FY99, which involves activities of lab-scale flow loop experiments and a large-scale demonstration test bed.

M.A. Ebadian

1999-01-31T23:59:59.000Z

285

O(d,d) invariance at two and three loops  

Science Journals Connector (OSTI)

We show that in a two-dimensional ? model whose fields only depend on one target space coordinate, the O(d,d) invariance of the conformal invariance conditions observed at one loop is preserved at two loops (in the general case with torsion) and at three loops (in the case without torsion).

I. Jack and S. Parsons

2000-06-20T23:59:59.000Z

286

REFINED RFP LOOP VOLTAGE CALCULATION J.C. Sprott  

E-Print Network [OSTI]

is the stored magnetic energy, Up is the plasma energy, and 'E is the global energy confinement time, which-of-merit for RFP devices is the loop voltage. Low loop voltage implies high plasma temperature and long energy is smallest if the loop is as close to the outside of the shell and as far from the primary windings

Sprott, Julien Clinton

287

Molecular Cell R-Loop Formation Is a Distinctive Characteristic  

E-Print Network [OSTI]

Molecular Cell Article R-Loop Formation Is a Distinctive Characteristic of Unmethylated Human Cp of GC skew leads to the formation of long R loop structures. Furthermore, we show that GC skew and R, we provide evidence that R loop formation protects from DNMT3B1, the primary de novo DNA

Chédin, Frédéric

288

Nested Loop Algorithm for Parallel Model Based Iterative Reconstruction  

E-Print Network [OSTI]

Nested Loop Algorithm for Parallel Model Based Iterative Reconstruction Zhou Yu, Lin Fu, Debashish. In this paper, we propose a fast converging simultaneous-update algorithm using a nested loop structure tomography, iterative reconstruction, nested loop, preconditioner. I. INTRODUCTION Recent applications

289

Structure of an RNA Hairpin Loop with a 5-CGUUUCG-3 Loop Motif by Heteronuclear NMR Spectroscopy and Distance Geometry  

Science Journals Connector (OSTI)

Structural features of a 19-nucleotide RNA hairpin loop (5-GGCGUACGUUUCGUACGCC-3), a loop motif which occurs in eukaryotic 18S rRNA, have been derived using multidimensional heteronuclear NMR spectroscopy in combination with local conformational ...

Christian Sich; Oliver Ohlenschlger; Ramadurai Ramachandran; Matthias Grlach; Larry R. Brown

1997-11-18T23:59:59.000Z

290

Stress-driven thermohaline loops Shaoyu Yuana  

E-Print Network [OSTI]

, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 Carl Wunsch Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139. Such models have applications in solar-heated water systems, nuclear reactors, and geother- mal energy systems

Wunsch, Carl

291

Chalmers University of Technology INFNGNING AV KOLDIOXID MED  

E-Print Network [OSTI]

Chalmers University of Technology INF?NGNING AV KOLDIOXID MED KEMCYKLISK F?RBR?NNING Chemical-Looping förbränning respiration ~2 000 000 000 f.Kr förbränning ~500 000 f.Kr. bränslecell 1839 chemical-looping Combustion (CLC) Anders Lyngfelt Chalmers Göteborg Chalmers Energidag 14 december 2012 #12;Chalmers

Lemurell, Stefan

292

Evaluation of Calcium Looping as Carbon Capture Option for Combustion and Gasification Power Plants  

Science Journals Connector (OSTI)

Abstract Power generation is one of the industrial sectors with major contribution to greenhouse gas emissions (especially CO2). For climate change mitigation, a special attention is given to the reduction of CO2 emissions by applying capture and storage techniques in which CO2 is captured from energy-intensive processes and then stored in suitable safe geologic locations. Carbon capture and storage (CCS) technologies are expected to play a significant role in the coming decades for curbing the greenhouse gas emissions and to ensure a sustainable development of power generation and other energy-intensive industrial sectors (e.g. cement, metallurgy, petro-chemical etc.). Among various carbon capture options, chemical looping systems are very promising options for intrinsically capture CO2 with lower cost and energy penalties. This paper evaluates calcium looping process as a promising carbon capture option to be applied in the most important coal- based power generation technologies. Combustion technology (Pulverized Fuel - PF) operated in both sub-critical and super- critical steam conditions were evaluated. Also, the gasification technology using an oxygen-blown entrained-flow gasifier was evaluated. As benchmark options, the same power generation technologies were evaluated without CCS. The power plant case studies investigated in the paper produces around 545 560 MW net power with at least 90% carbon capture rate. The modeling and simulation of the whole power generation schemes produced the input data for quantitative technical and environmental evaluations of power plants with carbon capture (similar power plant concept without CCS was used as reference for comparison). Mass and energy integration tools were used to assess the integration aspects of calcium looping unit into the whole power plant design, to optimize the overall efficiency and to evaluate the main sources of energy penalty for carbon capture.

Calin-Cristian Cormos; Letitia Petrescu

2014-01-01T23:59:59.000Z

293

Applications of solar reforming technology  

SciTech Connect (OSTI)

Research in recent years has demonstrated the efficient use of solar thermal energy for driving endothermic chemical reforming reactions in which hydrocarbons are reacted to form synthesis gas (syngas). Closed-loop reforming/methanation systems can be used for storage and transport of process heat and for short-term storage for peaking power generation. Open-loop systems can be used for direct fuel production; for production of syngas feedstock for further processing to specialty chemicals and plastics and bulk ammonia, hydrogen, and liquid fuels; and directly for industrial processes such as iron ore reduction. In addition, reforming of organic chemical wastes and hazardous materials can be accomplished using the high-efficiency destruction capabilities of steam reforming. To help identify the most promising areas for future development of this technology, we discuss in this paper the economics and market potential of these applications.

Spiewak, I. [Weizmann Inst. of Science, Rehovoth (Israel); Tyner, C.E. [Sandia National Labs., Albuquerque, NM (United States); Langnickel, U. [Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V. (DLR), Koeln (Germany)

1993-11-01T23:59:59.000Z

294

Factorized soft graviton theorems at loop level  

E-Print Network [OSTI]

We analyze the low-energy behavior of scattering amplitudes involving gravitons at loop level in four dimensions. The single-graviton soft limit is controlled by soft operators which have been argued to separate into a factorized piece and a non-factorizing infrared divergent contribution. In this note we show that the soft operators responsible for the factorized contributions are strongly constrained by gauge and Poincare invariance under the assumption of a local structure. We show that the leading and subleading orders in the soft-momentum expansion can not receive radiative corrections. The first radiative correction occurs for the sub-subleading soft graviton operator and is one-loop exact. It depends on only two undetermined coefficients which should reflect the field content of the theory under consideration.

Broedel, Johannes; Plefka, Jan; Rosso, Matteo

2014-01-01T23:59:59.000Z

295

Loop Gas Model for Open Strings  

E-Print Network [OSTI]

The open string with one-dimensional target space is formulated in terms of an SOS, or loop gas, model on a random surface. We solve an integral equation for the loop amplitude with Dirichlet and Neumann boundary conditions imposed on different pieces of its boundary. The result is used to calculate the mean values of order and disorder operators, to construct the string propagator and find its spectrum of excitations. The latter is not sensible neither to the string tension $\\L$ nor to the mass $\\mu$ of the ``quarks'' at the ends of the string. As in the case of closed strings, the SOS formulation allows to construct a Feynman diagram technique for the string interaction amplitudes.

V. Kazakov; I. Kostov

1992-05-18T23:59:59.000Z

296

Chemical Looping Reforming for H2, CO and Syngas Production  

SciTech Connect (OSTI)

We demonstrate that the extension of CLC onto oxidants beyond air opens new, highly efficient pathways for production of ultra-pure hydrogen, activation of CO{sub 2} via reduction to CO, and are currently working on production of syngas using nanocomposite Fe-BHA. CLR hold great potential due to fuel flexibility and CO{sub 2} capture. Chemical Looping Combustion (CLC) is a novel clean combustion technology which offers an elegant and highly efficient route for fossil fuel combustion. In CLC, combustion of a fuel is broken down into two spatially separated steps. In the reducer, the oxygen carrier (typically a metal) supplies the stoichiometric oxygen required for fuel combustion. In the oxidizer, the oxygen-depleted carrier is then re-oxidized with air. After condensation of steam from the effluent of the reducer, a high-pressure, high-purity sequestration-ready CO{sub 2} stream is obtained. In the present study, we apply the CLC principle to the production of high-purity H{sub 2}, CO, and syngas streams by replacing air with steam and/or CO{sub 2} as oxidant, respectively. Using H{sub 2}O as oxidant, pure hydrogen streams can be obtained. Similarly, using CO{sub 2} as oxidant, CO is obtained, thus opening an efficient route for CO{sub 2} utilization. Using steam and CO{sub 2} mixtures for carrier oxidation should thus allow production of syngas with adjustable CO:H{sub 2} ratios. Overall, these processes result in Chemical Looping Reforming (CLR), i.e. the net overall reaction is the steam and/or dry reforming of the respective fuel.

Bhavsar,Saurabh; Najera,Michelle; Solunke,Rahul; Veser,Gtz

2001-06-06T23:59:59.000Z

297

A fault tolerant computer system using an all-digital phase-locked loop and pipelined voters  

E-Print Network [OSTI]

A FAULT TOLERANT COMPUTER SYSTEM USING AN ALL-DIGITAL PHASE-LOCKED LOOP AND PIPELINED VOTERS A Thesis by AARON OSBORNE Approved as to style and content by: Karan Watson (Co-Chair of Committee) Jyh-Cham Liu (Co-Chair of Committ~ Hosame Abu...-Amara (Member) Norm Gri old (Memb r) A. D. Patton Head of Department) December 1992 ABSTRACT A Fault Tolerant Computer System Using an All-Digital Phase-Locked Loop and Pipelined Voters. (December 1992) Aaron Osborne, B. S. , Michigan Technological...

Osborne, Aaron

2012-06-07T23:59:59.000Z

298

Novel New Oxygen Carriers for Chemical Looping Combustion of Solid Fuels  

Science Journals Connector (OSTI)

Novel New Oxygen Carriers for Chemical Looping Combustion of Solid Fuels ... A loop of chem. ... Energy Combust. ...

Yueying Fan; Ranjani Siriwardane

2014-02-21T23:59:59.000Z

299

An investigation of synthetic fuel production via chemical looping  

SciTech Connect (OSTI)

Producing liquid hydrocarbon fuels with a reduced greenhouse gas emissions profile would ease the transition to a carbon-neutral energy sector with the transportation industry being the immediate beneficiary followed by the power industry. Revolutionary solutions in transportation, such as electricity and hydrogen, depend on the deployment of carbon capture and storage technologies and/or renewable energy systems. Additionally, high oil prices may increase the development of unconventional sources, such as tar sands, that have a higher emissions profile. One process that is gaining interest is a system for producing reduced carbon fuels though chemical looping technologies. An investigation of the implications of such a process using methane and carbon dioxide that is reformed to yield methanol has been done. An important aspect of the investigation is the use of off-the-shelf technologies to achieve the results. The ability of the process to yield reduced emissions fuels depends on the source for the feed and process heat. For the range of conditions considered, the emissions profile of methanol produced in this method varies from 0.475 to 1.645 moles carbon dioxide per mole methanol. The thermal load can be provided by methane, coal or carbon neutral (biogas). The upper bound can be lowered to 0.750 by applying CCS and/or using nonfossil heat sources for the reforming. The process provides an initial pathway to incorporate CO{sub 2} into fuels independent of electrolytic hydrogen or developments in other sectors of the economy. 22 refs., 1 fig., 3 tabs.

Frank Zeman; Marco Castaldi [Columbia University, New York, NY (United States). Department of Earth and Environmental Engineering

2008-04-15T23:59:59.000Z

300

Technology Roadmaps  

Broader source: Energy.gov [DOE]

Thispage contains links to DOE's Technology Roadmaps, multi-year plans outlining solid-state lighting goals, research and development initiatives aimed at accelerating technology advances and...

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Technology Development  

Science Journals Connector (OSTI)

In presenting this chapter on technology development, it must be stated that attempts to make an up-to-date technology survey are restricted, unfortunately, by the proprietary nature of recent advances, detail...

B. E. Conway

1999-01-01T23:59:59.000Z

302

MHK Technologies/CETO Wave Energy Technology | Open Energy Information  

Open Energy Info (EERE)

Wave Energy Technology Wave Energy Technology < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage CETO Wave Energy Technology.png Technology Profile Primary Organization Carnegie Wave Energy Limited Project(s) where this technology is utilized *MHK Projects/CETO La Reunion *MHK Projects/CETO3 Garden Island *MHK Projects/Perth Wave Energy Project PWEP Technology Resource Click here Wave Technology Type Click here Point Absorber Technology Readiness Level Click here TRL 7/8: Open Water System Testing & Demonstration & Operation Technology Description The CETO system distinguishes itself from other wave energy devices by operating out of sight and being anchored to the ocean floor. Each CETO unit consists of a pump unit moored to the ocean floor and connected to a submerged Buoyant Actuator via a tether. The Buoyant Actuator moves in an orbital motion, in harmony with the wave, capturing the power of the passing waves. The Buoyant Actuator is connected to a tether (marine rope) that creates a vertical upward force which actuates the seabed mounted piston pump. This force pressurises fluid in the CETO system. The high pressure fluid is then sent ashore via a subsea pipeline. Onshore the fluid passes through a standard hydroelectric turbine to generate zero-emission electricity and/or through a reverse osmosis plant to directly create zero-emission desalinated water (replacing greenhouse gas emitting electrically driven pumps usually required for such plants). The fluid is then re-circulated at low-pressure to the CETO units offshore creating a closed-loop system. The generation capacity of CETO projects is scalable. To increase the project capacity additional units can be added offshore and connected back to a larger power house onshore.

303

Investigation of the failure in GRI`s pipeline simulation facility flow loop. Final report, October 1995-May 1996  

SciTech Connect (OSTI)

The GRI Pipeline Simulation Facility contains a 4700-foot-long loop of 24-inch-diameter pipe which can be used to simulate conditions in a natural gas pipeline. The flow loop is designed to support research, development, and demonstrations of in-line inspection technologies and equipment. A prototype magnetic flux leakage device was being propelled through the loop using compressed air as the pressurizing medium. Through a sequence of events, a fire initiated and the components of the pig train (magnetizer, instrumentation canister, and pusher pit) began to burn. The pig train travelled another 450-feet as the fire progressed forward to other components. At this point, the pig train stopped, and the pipeline became overheated and ruptured.

Vieth, P.H.; Maxey, W.A.; Mesloh, R.E.; Kiefner, J.F.; Williams, G.M.

1996-05-01T23:59:59.000Z

304

Department of Engineering Technology Technology Education  

E-Print Network [OSTI]

Department of Engineering Technology Technology Education A Teacher Education Program New Jersey Institute of Technology #12;WHAT WILL YOU LEARN? Technology teachers teach problem-based learning utilizing math, science and technology principles. Technological studies involve students: · Designing

Bieber, Michael

305

Energy Conversion Advanced Heat Transport Loop and Power Cycle  

SciTech Connect (OSTI)

The Department of Energy and the Idaho National Laboratory are developing a Next Generation Nuclear Plant (NGNP) to serve as a demonstration of state-of-the-art nuclear technology. The purpose of the demonstration is two fold 1) efficient low cost energy generation and 2) hydrogen production. Although a next generation plant could be developed as a single-purpose facility, early designs are expected to be dual-purpose. While hydrogen production and advanced energy cycles are still in its early stages of development, research towards coupling a high temperature reactor, electrical generation and hydrogen production is under way. Many aspects of the NGNP must be researched and developed in order to make recommendations on the final design of the plant. Parameters such as working conditions, cycle components, working fluids, and power conversion unit configurations must be understood. Three configurations of the power conversion unit were demonstrated in this study. A three-shaft design with 3 turbines and 4 compressors, a combined cycle with a Brayton top cycle and a Rankine bottoming cycle, and a reheated cycle with 3 stages of reheat were investigated. An intermediate heat transport loop for transporting process heat to a High Temperature Steam Electrolysis (HTSE) hydrogen production plant was used. Helium, CO2, and an 80% nitrogen, 20% helium mixture (by weight) were studied to determine the best working fluid in terms cycle efficiency and development cost. In each of these configurations the relative component size were estimated for the different working fluids. The relative size of the turbomachinery was measured by comparing the power input/output of the component. For heat exchangers the volume was computed and compared. Parametric studies away from the baseline values of the three-shaft and combined cycles were performed to determine the effect of varying conditions in the cycle. This gives some insight into the sensitivity of these cycles to various operating conditions as well as trade offs between efficiency and capital cost. Prametric studies were carried out on reactor outlet temperature, mass flow, pressure, and turbine cooling. Recommendations on the optimal working fluid for each configuration were made. A steady state model comparison was made with a Closed Brayton Cycle (CBC) power conversion system developed at Sandia National Laboratory (SNL). A preliminary model of the CBC was developed in HYSYS for comparison. Temperature and pressure ratio curves for the Capstone turbine and compressor developed at SNL were implemented into the HYSYS model. A comparison between the HYSYS model and SNL loop demonstrated power output predicted by HYSYS was much larger than that in the experiment. This was due to a lack of a model for the electrical alternator which was used to measure the power from the SNL loop. Further comparisons of the HYSYS model and the CBC data are recommended. Engineering analyses were performed for several configurations of the intermediate heat transport loop that transfers heat from the nuclear reactor to the hydrogen production plant. The analyses evaluated parallel and concentric piping arrangements and two different working fluids, including helium and a liquid salt. The thermal-hydraulic analyses determined the size and insulation requirements for the hot and cold leg pipes in the different configurations. Economic analyses were performed to estimate the cost of the va

Oh, C. H.

2006-08-01T23:59:59.000Z

306

Vehicle Technologies Office: Power Electronics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Power Electronics Power Electronics The power electronics activity focuses on research and development (R&D) for flexible, integrated, modular power electronics for power conditioning and control, including a power switch stage capable of running a variety of motors and loads. Efforts are underway to reduce overall system costs for these vehicles through the elimination of additional cooling loops to keep the power electronics within their safe operation ranges. These challenges are being met within the program through research in: Silicon carbide and Gallium Nitride semiconductors, which can be operated at much higher temperatures than current silicon semiconductors; Packaging innovations for higher temperature operation; Improved thermal control technologies; and

307

Thermoelectric power generator with intermediate loop  

DOE Patents [OSTI]

A thermoelectric power generator is disclosed for use to generate electrical power from heat, typically waste heat. An intermediate heat transfer loop forms a part of the system to permit added control and adjustability in the system. This allows the thermoelectric power generator to more effectively and efficiently generate power in the face of dynamically varying temperatures and heat flux conditions, such as where the heat source is the exhaust of an automobile, or any other heat source with dynamic temperature and heat flux conditions.

Bell, Lon E; Crane, Douglas Todd

2013-05-21T23:59:59.000Z

308

Thermoelectric power generator with intermediate loop  

DOE Patents [OSTI]

A thermoelectric power generator is disclosed for use to generate electrical power from heat, typically waste heat. An intermediate heat transfer loop forms a part of the system to permit added control and adjustability in the system. This allows the thermoelectric power generator to more effectively and efficiently generate power in the face of dynamically varying temperatures and heat flux conditions, such as where the heat source is the exhaust of an automobile, or any other heat source with dynamic temperature and heat flux conditions.

Bel,; Lon E. (Altadena, CA); Crane, Douglas Todd (Pasadena, CA)

2009-10-27T23:59:59.000Z

309

DOE-Supported Project Advances Clean Coal, Carbon Capture Technology |  

Broader source: Energy.gov (indexed) [DOE]

DOE-Supported Project Advances Clean Coal, Carbon Capture DOE-Supported Project Advances Clean Coal, Carbon Capture Technology DOE-Supported Project Advances Clean Coal, Carbon Capture Technology January 29, 2013 - 12:00pm Addthis Washington, DC - Researchers at The Ohio State University (OSU) have successfully completed more than 200 hours of continuous operation of their patented Coal-Direct Chemical Looping (CDCL) technology - a one-step process to produce both electric power and high-purity carbon dioxide (CO2). The test, led by OSU Professor Liang-Shih Fan, represents the longest integrated operation of chemical looping technology anywhere in the world to date. The test was conducted at OSU's 25 kilowatt thermal (kWt) CDCL combustion sub-pilot unit under the auspices of DOE's Carbon Capture Program, which is developing innovative environmental control technologies to foster the

310

DOE-Supported Project Advances Clean Coal, Carbon Capture Technology |  

Broader source: Energy.gov (indexed) [DOE]

DOE-Supported Project Advances Clean Coal, Carbon Capture DOE-Supported Project Advances Clean Coal, Carbon Capture Technology DOE-Supported Project Advances Clean Coal, Carbon Capture Technology January 29, 2013 - 12:00pm Addthis Washington, DC - Researchers at The Ohio State University (OSU) have successfully completed more than 200 hours of continuous operation of their patented Coal-Direct Chemical Looping (CDCL) technology - a one-step process to produce both electric power and high-purity carbon dioxide (CO2). The test, led by OSU Professor Liang-Shih Fan, represents the longest integrated operation of chemical looping technology anywhere in the world to date. The test was conducted at OSU's 25 kilowatt thermal (kWt) CDCL combustion sub-pilot unit under the auspices of DOE's Carbon Capture Program, which is developing innovative environmental control technologies to foster the

311

Available Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

6 News Stories (and older) 6 News Stories (and older) 12.21.2005___________________________________________________________________ Genzyme acquires gene therapy technology invented at Berkeley Lab. Read more here. 07.19.2005 _________________________________________________________________ Symyx, a start up company using Berkeley Lab combinatorial chemistry technology licensed by the Technology Transfer Department and developed by Peter Schultz and colleagues in the Materials Sciences Division, will be honored with Frost & Sullivan's 2005 Technology Leadership Award at their Excellence in Emerging Technologies Awards Banquet for developing enabling technologies and methods to aid better, faster and more efficient R&D. Read more here. 07.11.2005 _________________________________________________________________ Nanosys, Inc., a Berkeley Lab startup, is among the solar nanotech companies investors along Sand Hill Road in Menlo Park hope that thinking small will translate into big profits. Read more here.

312

A STATE VARIABLE DESCRIPTION OF THE RHIC RF CONTROL LOOPS.  

SciTech Connect (OSTI)

The beam transfer function changes during the RHIC ramp. The response of the RF control loops changes as a result. A state-variable description of the beam and the RF control loops was developed. This description was used to generate a set of feedback matrices that keeps the response of the RF control loops constant during the ramp. This paper describes the state-variable description and its use in determining the K matrices.

SCHULTHEISS,C.; BRENNAN,J.M.

2002-06-02T23:59:59.000Z

313

Mercury Release and Speciation in Chemical Looping Combustion of Coal  

Science Journals Connector (OSTI)

Mercury Release and Speciation in Chemical Looping Combustion of Coal ... In the in situ Gasification Chemical Looping Combustion of coal (iG-CLC), the fuel is gasified in situ in the fuel reactor and gasification products are converted to CO2 and H2O by reaction with the oxygen carrier. ... This work is the first study on mercury release in Chemical Looping Combustion of coal. ...

T. Mendiara; M. T. Izquierdo; A. Abad; P. Gayn; F. Garca-Labiano; L. F. de Diego; J. Adnez

2014-03-06T23:59:59.000Z

314

Alstom's Chemical Looping Combustion Prototype for CO{sub 2} Capture from Existing Pulverized Coal-Fired Power Plants  

SciTech Connect (OSTI)

Alstoms Limestone Chemical Looping (LCL) process has the potential to capture CO{sub 2} from new and existing coal-fired power plants while maintaining high plant power generation efficiency. This new power plant concept is based on a hybrid combustion- gasification process utilizing high temperature chemical and thermal looping technology. This process could also be potentially configured as a hybrid combustion-gasification process producing a syngas or hydrogen for various applications while also producing a separate stream of CO{sub 2} for use or sequestration. The targets set for this technology is to capture over 90% of the total carbon in the coal at cost of electricity which is less than 20% greater than Conventional PC or CFB units. Previous work with bench scale test and a 65 kWt Process Development Unit Development (PDU) has validated the chemistry required for the chemical looping process and provided for the investigation of the solids transport mechanisms and design requirements. The objective of this project is to continue development of the combustion option of chemical looping (LCL-C) by designing, building and testing a 3 MWt prototype facility. The prototype includes all of the equipment that is required to operate the chemical looping plant in a fully integrated manner with all major systems in service. Data from the design, construction, and testing will be used to characterize environmental performance, identify and address technical risks, reassess commercial plant economics, and develop design information for a demonstration plant planned to follow the proposed Prototype. A cold flow model of the prototype will be used to predict operating conditions for the prototype and help in operator training. Operation of the prototype will provide operator experience with this new technology and performance data of the LCL-C process, which will be applied to the commercial design and economics and plan for a future demonstration plant.

Andrus, Herbert; Chiu, John; Edberg, Carl; Thibeault, Paul; Turek, David

2012-09-30T23:59:59.000Z

315

Aspen Plus simulations of fluidised beds for chemical looping combustion  

Science Journals Connector (OSTI)

Abstract Chemical Looping Combustion (CLC) is a technology able to generate energy whilst managing CO2 emissions. A system composed by two interconnected fluidised beds is often used in CLC: the two fluidised beds are employed for carrying out the oxidation and reduction reactions of the metal oxide employed as oxygen carrier. In this work, a model to implement fluidised bed systems in Aspen Plus is presented. Depending on the hydrodynamic regimes, two different models are considered: one of the two fluidised beds, called the fuel reactor, is modelled according to the two-phase theory (i.e. emulsion and bubble phase) whilst the other bed, called the air reactor, is assumed to operate in the fast fluidisation regime. Kinetic equations for heterogeneous gas/solid reactions are also considered in the model. Simulation tests for each fluidised bed are carried out, and comparisons are made with experimental data from the literature. A comparison with the largely used Gibbs reactor model is carried out showing the advantages of using the models developed here. In addition, the net heat duty of the whole process is calculated and the role of the main variables that affect the process is investigated.

Rosario Porrazzo; Graeme White; Raffaella Ocone

2014-01-01T23:59:59.000Z

316

Natural Ores as Oxygen Carriers in Chemical Looping Combustion  

SciTech Connect (OSTI)

Chemical looping combustion (CLC) is a combustion technology that utilizes oxygen from oxygen carriers (OC), such as metal oxides, instead of air to combust fuels. The use of natural minerals as oxygen carriers has advantages, such as lower cost and availability. Eight materials, based on copper or iron oxides, were selected for screening tests of CLC processes using coal and methane as fuels. Thermogravimetric experiments and bench-scale fixed-bed reactor tests were conducted to investigate the oxygen transfer capacity, reaction kinetics, and stability during cyclic reduction/oxidation reaction. Most natural minerals showed lower combustion capacity than pure CuO/Fe{sub 2}O{sub 3} due to low-concentrations of active oxide species in minerals. In coal CLC, chryscolla (Cu-based), magnetite, and limonite (Fe-based) demonstrated better reaction performances than other materials. The addition of steam improved the coal CLC performance when using natural ores because of the steam gasification of coal and the subsequent reaction of gaseous fuels with active oxide species in the natural ores. In methane CLC, chryscolla, hematite, and limonite demonstrated excellent reactivity and stability in 50-cycle thermogravimetric analysis tests. Fe{sub 2}O{sub 3}-based ores possess greater oxygen utilization but require an activation period before achieving full performance in methane CLC. Particle agglomeration issues associated with the application of natural ores in CLC processes were also studied by scanning electron microscopy (SEM).

Tian, Hanjing; Siriwardane, Ranjani; Simonyi, Thomas; Poston, James

2013-08-01T23:59:59.000Z

317

Fuel Technologies  

Broader source: Energy.gov [DOE]

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

318

Layering Technologies  

Science Journals Connector (OSTI)

Planar technology requires that thin layers of materials be formed and patterned sequentially, commencing with a flat rigid substrate. The key aspects of each layer are its Thi...

Ivor Brodie; Julius J. Muray

1992-01-01T23:59:59.000Z

319

Spin and orbital magnetization loops obtained using magnetic Compton scattering  

SciTech Connect (OSTI)

We present an application of magnetic Compton scattering (MCS) to decompose a total magnetization loop into spin and orbital magnetization contributions. A spin magnetization loop of SmAl{sub 2} was measured by recording the intensity of magnetic Compton scattering as a function of applied magnetic field. Comparing the spin magnetization loop with the total magnetization one measured by a vibrating sample magnetometer, the orbital magnetization loop was obtained. The data display an anti-coupled behavior between the spin and orbital magnetizations and confirm that the orbital part dominates the magnetization.

Itou, M.; Sakurai, Y. [Japan Synchrotron Radiation Research Institute, SPring-8, Hyogo 679-5198 (Japan)] [Japan Synchrotron Radiation Research Institute, SPring-8, Hyogo 679-5198 (Japan); Koizumi, A. [Graduate School of Materials Science, University of Hyogo, Hyogo 678-1297 (Japan)] [Graduate School of Materials Science, University of Hyogo, Hyogo 678-1297 (Japan)

2013-02-25T23:59:59.000Z

320

Exhaust Aftertreatment and Low Pressure Loop EGR Applied to an...  

Broader source: Energy.gov (indexed) [DOE]

Loop EGR Applied to an Off-Highway Engine Project Director- Kirby Baumgard John Deere Power Systems DOE Project Officer- Steve Cooke Subcontract with Michigan Tech August 21...

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Concept development of rotating bed chemical looping combustion reactor:.  

E-Print Network [OSTI]

??In this research a new rotary chemical looping combustion (CLC) reactor was developed which is suitable for larger scales and solves some of the issues (more)

Hermans, C.W.M.

2013-01-01T23:59:59.000Z

322

Chemical-Looping Combustion With Gaseous Fuels: Thermodynamic Parametric Modeling  

Science Journals Connector (OSTI)

This communication reports the thermodynamic equilibrium analysis of the reactions involved in a chemical-looping combustion (CLC) process using methane, ethane and ... energy minimization technique determining t...

Mohammad M. Hossain

2014-05-01T23:59:59.000Z

323

Glass Technology  

Science Journals Connector (OSTI)

... WE have received from the Department of Glass Technology, University of Sheffield, a copy of vol. ii. of Experimental Researches ... that department. The papers included have already appeared in the Journal of the Society of Glass Technology. They range over a somewhat wide field of the ...

1920-08-23T23:59:59.000Z

324

Decomposition Based Solution Approaches for Multi-product Closed-Loop Supply Chain Network Design Models  

E-Print Network [OSTI]

to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Co-Chairs of Committee, S?la C?etinkaya Halit ?Uster Committee Members, Elif Ak?cal? Brett Peters Jennifer L....E., PSG College of Technology, Coimbatore, India; M.S., Texas A&M University Co?Chairs of Advisory Committee: Dr. S?la C?etinkaya Dr. Halit ?Uster Closed-loop supply chain (CLSC) management provides opportunity for cost savings through the integration...

Easwaran, Gopalakrishnan

2010-01-16T23:59:59.000Z

325

NREL: Technology Deployment - Technology Acceleration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

assistance to federal and private industry to help address market barriers to sustainable energy technologies. Learn more about NREL's work in the following areas:...

326

A model of the generation and transport of ozone in high-tension nozzle driven corona inside a novel diode  

SciTech Connect (OSTI)

The genesis and transport of ozone (O{sub 3}) are investigated in a novel plasma diode and described in this paper. The innovative cathode (K) of this axial symmetric diode which operated at the high voltage ({phi}{sub 0}), has a large number of sharpened nozzles located on different radial planes of its central tubular-mast and is encircled by the anode (A). The nozzles played the dual role of oxygen (O{sub 2}) injection as well as creation of high electric field (E) in the A-K gap, enabled the formation of a cold corona. Electrons in the corona under the influence of E moved towards anode, collided with O{sub 2} and created the O radicals. O in turn joined the free O{sub 2} and formed O{sub 3}. The evolution of O{sub 3} here is modeled in various O{sub 2} pressure (P), electron density (n{sub e}), and temperature (T) in terms of the major reaction modes involving e, O, O{sub 2}, and O{sub 3}. Typical steady state O{sub 3} density attained so in P {approx} bar, n{sub e}{approx} 10{sup 15} m{sup -3} and T{approx} 300 K is over 10{sup 25} m{sup -3} and that of O lower {approx}10{sup 20} m{sup -3}. Both the O and O{sub 3} densities increased with an enhanced n{sub e} of avalanche multiplications in corona. O{sub 3} increased also with a higher P but the temporal O reversed in trend midway and reduced with P towards the steady state. A sharp decline in diode resistance with smaller A-K gap induced finite discharge current and led to the undesired heating of corona. It is shown that the O{sub 3} density reduced with the temperature rise but O density reduced with the T rise up to 500 K and then rose modestly with the further T increase.

Vijayan, T.; Patil, Jagadish G. [Pillai's Institute of Information Technology, Engineering, Media Studies and Research (PIIT), Dr. K. M. Vasudevan Pillai's Campus, Sector 16, New Panvel, Navi Mumbai 410206 (India)

2012-12-15T23:59:59.000Z

327

Vehicle Technologies Office: Vehicle Technologies Office Recognizes  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Vehicle Technologies Vehicle Technologies Office Recognizes Outstanding Researchers to someone by E-mail Share Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on Facebook Tweet about Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on Twitter Bookmark Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on Google Bookmark Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on Delicious Rank Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on Digg Find More places to share Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on AddThis.com...

328

Vehicle Technologies Office: Graduate Automotive Technology Education  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Deployment Deployment Site Map Printable Version Share this resource Send a link to Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) to someone by E-mail Share Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on Facebook Tweet about Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on Twitter Bookmark Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on Google Bookmark Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on Delicious Rank Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on Digg Find More places to share Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on AddThis.com...

329

Building Technologies Office: Emerging Technologies Activities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Emerging Technologies Emerging Technologies Activities to someone by E-mail Share Building Technologies Office: Emerging Technologies Activities on Facebook Tweet about Building Technologies Office: Emerging Technologies Activities on Twitter Bookmark Building Technologies Office: Emerging Technologies Activities on Google Bookmark Building Technologies Office: Emerging Technologies Activities on Delicious Rank Building Technologies Office: Emerging Technologies Activities on Digg Find More places to share Building Technologies Office: Emerging Technologies Activities on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research Building Envelope Research Windows, Skylights, & Doors Research Space Heating & Cooling Research Water Heating Research

330

Geothermal Loop Experimental Facility. Final report  

SciTech Connect (OSTI)

Research at the Geothermal Loop Experimental Facility was successfully concluded in September 1979. In 13,000 hours of operation over a three and one half year period, the nominal 10 megawatt electrical equivalent GLEF provided the opportunity to identify problems in working with highly saline geothermal fluids and to develop solutions that could be applied to a commercial geothermal power plant producing electricity. A seven and one half year period beginning in April 1972, with early well flow testing and ending in September 1979, with the completion of extensive facility and reservoir operations is covered. During this period, the facility was designed, constructed and operated in several configurations. A comprehensive reference document, addressing or referencing documentation of all the key areas investigated is presented.

Not Available

1980-04-01T23:59:59.000Z

331

Massive Nonplanar Two-Loop Maximal Unitarity  

E-Print Network [OSTI]

We explore maximal unitarity for nonplanar two-loop integrals with up to four massive external legs. In this framework, the amplitude is reduced to a basis of master integrals whose coefficients are extracted from maximal cuts. The hepta-cut of the nonplanar double box defines a nodal algebraic curve associated with a multiply pinched genus-3 Riemann surface. All possible configurations of external masses are covered by two distinct topological pictures in which the curve decomposes into either six or eight Riemann spheres. The procedure relies on consistency equations based on vanishing of integrals of total derivatives and Levi-Civita contractions. Our analysis indicates that these constraints are governed by the global structure of the maximal cut. Lastly, we present an algorithm for computing generalized cuts of massive integrals with higher powers of propagators based on the Bezoutian matrix method.

Mads Sogaard; Yang Zhang

2014-06-19T23:59:59.000Z

332

SIMPLE, FULLY FEATURED BOILER LOOP MODELLING  

E-Print Network [OSTI]

The performance of hot water space heating systems for mild to warm temperate climates is dominated by the efficiency of boiler operation at low load (i.e. below 25 % of nameplate capacity). This efficiency is influenced by a number of effects that are poorly represented in common modelling approaches, including static thermal losses from the boiler and distribution system, changes in burner efficiency at different firing rates, thermal inertia in the boiler loop and the effects of cyclic operation. In this paper, a simple model that includes these loss mechanisms is developed. An example from an actual project is used to demonstrate that addressing the full range of low-load efficiency effects can increase predicted boiler gas consumption substantially relative to standard simulation approaches.

Erica Kenna; Paul Bannister

333

Novel, Magnetically Fluidized-Bed Reactor Development for the Looping Process: Coal to Hydrogen Production Research and Development  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Novel, Magnetically Fluidized-Bed Novel, Magnetically Fluidized-Bed Reactor Development for the Looping Process: Coal to Hydrogen Production Research and Development Background The U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) is committed to improving methods for co-producing power and chemicals, fuels, and hydrogen (H2). Gasification is a process by which fuels such as coal can be used to produce synthesis gas (syngas), a mixture of H2, carbon monoxide (CO), and carbon

334

Affine Nested Loop Programs and their Binary Parameterized Dataflow Graph Counterparts  

E-Print Network [OSTI]

Affine Nested Loop Programs and their Binary Parameterized Dataflow Graph Counterparts Ed F Parameterized static affine nested loop programs can be automatically converted to input-output equivalent Kahn affine nested loop programs which are nested loop programs in which the loop boundaries, the conditions

Bhattacharyya, Shuvra S.

335

Tiling Imperfectly-nested Loop Nests Nawaaz Ahmed, Nikolay Mateev and Keshav Pingali,  

E-Print Network [OSTI]

Tiling Imperfectly-nested Loop Nests Nawaaz Ahmed, Nikolay Mateev and Keshav Pingali, Department the effect of interleaving iterations of these loops. Tiling of perfectly-nested loop nests (which are loop nests in which all assignment statements are contained in the innermost loop) is well understood

Pingali, Keshav K.

336

Levels and loops: the future of artificial intelligence and neuroscience  

Science Journals Connector (OSTI)

...with the perceptual-motor loop of a robot in a...sensory perceptions and motor actions in an environment...perception, on sensory^motor coordinate systems...Levels and loops: the future ofarti cial intelligence...which relativity and quantum mechanics are our best...

1999-01-01T23:59:59.000Z

337

Intercommutation of Z-boson string loops violates baryon number  

Science Journals Connector (OSTI)

We show that delinking of Z-boson string loops changes the helicity and thus violates baryon number. The key point is that an unlinked vortex loop cannot be twisted. The helicity of an eventual magnetic twist when averaged in time is zero.

Jacek Dziarmaga

1995-07-15T23:59:59.000Z

338

Analysis of heat transfer in unlooped and looped pulsating  

E-Print Network [OSTI]

Analysis of heat transfer in unlooped and looped pulsating heat pipes M.B. Sha®i and A. Faghri of Mechnical Engineering, New Mexico State University, Las Cruces, USA Keywords Heat transfer, Condensation, Tubing Abstract An advanced heat transfer model for both unlooped and looped Pulsating Heat Pipes (PHPs

Zhang, Yuwen

339

Thermodynamic Analysis of Alternative Approaches to Chemical Looping Combustion  

Science Journals Connector (OSTI)

Thermodynamic Analysis of Alternative Approaches to Chemical Looping Combustion ... Because H2 and syngas have similar combustion irreversibilities, when reforming is done optimally (with TR close to 650 K), iso-octane can be combusted with the same efficiency as that of preheated, isothermal H2 combustion. ... A loop of chem. ...

V. Kalyana Chakravarthy; C. Stuart Daw; Josh A. Pihl

2011-01-19T23:59:59.000Z

340

Exploring the Energy Landscapes of Flexible Molecular Loops using  

E-Print Network [OSTI]

in Dynamical Systems and also applied to Robotics, provide efficient algorithms to trace out implicitly defined molecular loops. These tools produce an atlas composed by coordinated charts that parametrize the conformational space. The atlas captures the structure of this space, which determines the motion of the loop

Porta, Josep M.

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Robust Multi-loop Airborne SLAM in Unknown Wind Environments  

E-Print Network [OSTI]

Robust Multi-loop Airborne SLAM in Unknown Wind Environments Jonghyuk Kim Department of Engineering for Autonomous Systems University of Sydney, Australia Email: salah@acfr.usyd.edu.au Abstract-- This paper presents a robust multi-loop airborne SLAM structure which also augments wind information. The air velocity

Kim, Jonghyuk "Jon"

342

Loop Effects in AdS/CFT and Beyond  

Science Journals Connector (OSTI)

......Loop Effects in AdS/CFT and Beyond 37 at the classical level, it does break conformal invariance at the level of the propa- gator. Anticipating slightly, we see that there should be a one-loop contribution to the supergravity action which similarly breaks......

Steven S. Gubser

2003-06-01T23:59:59.000Z

343

The nested simple conformal loop ensembles in the Riemann sphere  

E-Print Network [OSTI]

Simple conformal loop ensembles (CLE) are a class of random collection of simple non-intersecting loops that are of particular interest in the study of conformally invariant systems. Among other things related to these CLEs, we prove the invariance in distribution of their nested "full-plane" versions under the inversion $z \\mapsto 1/z$.

Antti Kemppainen; Wendelin Werner

2014-05-23T23:59:59.000Z

344

Building Technologies Office: Emerging Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Creating the Next Generation of Energy Efficient Technology Creating the Next Generation of Energy Efficient Technology The Emerging Technologies team partners with national laboratories, industry, and universities to advance research, development, and commercialization of energy efficient and cost effective building technologies. These partnerships help foster American ingenuity to develop cutting-edge technologies that have less than 5 years to market readiness, and contribute to the goal to reduce energy consumption by at least 50%. Sandia Cooler's innovative, compact design combines a fan and a finned metal heat sink into a single element, efficiently transferring heat in microelectronics and reducing energy use. Supporting Innovative Research to Help Reduce Energy Use and Advance Manufacturing Learn More

345

Control and optimization system and method for chemical looping processes  

DOE Patents [OSTI]

A control system for optimizing a chemical loop system includes one or more sensors for measuring one or more parameters in a chemical loop. The sensors are disposed on or in a conduit positioned in the chemical loop. The sensors generate one or more data signals representative of an amount of solids in the conduit. The control system includes a data acquisition system in communication with the sensors and a controller in communication with the data acquisition system. The data acquisition system receives the data signals and the controller generates the control signals. The controller is in communication with one or more valves positioned in the chemical loop. The valves are configured to regulate a flow of the solids through the chemical loop.

Lou, Xinsheng; Joshi, Abhinaya; Lei, Hao

2014-06-24T23:59:59.000Z

346

Effects of inflation on a cosmic string loop population  

SciTech Connect (OSTI)

We study the evolution of simple cosmic string loop solutions in an inflationary universe. We show, for the particular case of circular loops, that periodic solutions do exist in a de Sitter universe, below a critical loop radius R{sub c}H=1/2. On the other hand, larger loops freeze in comoving coordinates, and we explicitly show that they can survive more e-foldings of inflation than pointlike objects. We discuss the implications of these findings for the survival of realistic cosmic string loops during inflation and for the general characteristics of post-inflationary cosmic string networks. We also consider the analogous solutions for domain walls, in which case the critical radius is R{sub c}H=2/3.

Avelino, P. P. [Centro de Fisica do Porto, Rua do Campo Alegre 687, 4169-007 Porto (Portugal); Departamento de Fisica da Faculdade de Ciencias da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto (Portugal); Martins, C. J. A. P. [Centro de Fisica do Porto, Rua do Campo Alegre 687, 4169-007 Porto (Portugal); Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom); Shellard, E. P. S. [Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom)

2007-10-15T23:59:59.000Z

347

MHK Technologies/Ocean Current Linear Turbine | Open Energy Information  

Open Energy Info (EERE)

Linear Turbine Linear Turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Ocean Current Linear Turbine.jpg Technology Profile Primary Organization Ocean Energy Company LLC Technology Type Click here Seabed mooring system Technology Readiness Level Click here TRL 5 6 System Integration and Technology Laboratory Demonstration Technology Description Endless cable loop with parachutes spliced to cable which moored in an ocean current pulls the cable through rotors which in turn power conventional electricity generators See US Patent 3 887 817 Additional patent pending Technology Dimensions Device Testing Date Submitted 30:08.6 << Return to the MHK database homepage Retrieved from "http://en.openei.org/w/index.php?title=MHK_Technologies/Ocean_Current_Linear_Turbine&oldid=681618"

348

Closed-loop control of anesthesia in children 1 Robust closed-loop control of induction and  

E-Print Network [OSTI]

: During closed-loop control, a drug infusion is continually adjusted according to a measure of clinical. Remifentanil was administered as a bolus (0.5 g/kg), followed by continuous infusion (0.03 g/kg/min). The propofol infusion was closed-loop controlled throughout induction and maintenance of anesthesia, using

349

Technology Analysis  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

* Heavy Vehicle Technologies * Heavy Vehicle Technologies * Multi-Path Transportation Futures * Idling Studies * EDrive Vehicle Monthly Sales Transportation Research and Analysis Computing Center Working With Argonne Contact TTRDC Technology Analysis truck Heavy vehicle techologies are one subject of study. Research Reducing Greenhouse Gas Emissions from U.S. Transportation Heavy Vehicle Technologies Multi-Path Transportation Futures Study Idling Studies Light Duty Electric Drive Vehicles Monthly Sales Updates Lithium-Ion Battery Recycling and Life Cycle Analysis Reports Propane Vehicles: Status, Challenges, and Opportunities (pdf; 525 kB) Natural Gas Vehicles: Status, Barriers, and Opportunities (pdf; 696 kB) Regulatory Influences That Will Likely Affect Success of Plug-in Hybrid and Battery Electric Vehicles (pdf; 1.02 MB)

350

Coal Technology  

Science Journals Connector (OSTI)

Several large demonstrations of FBC technology for electrical power generation have proven ... -MW(e) atmospheric pressure circulating fluidized-bed boiler at the ColoradoUte Electric Association's...14 ...

2003-01-01T23:59:59.000Z

351

An algorithm for automatic detection of loop indices for communication overlapping  

Science Journals Connector (OSTI)

This paper presents a compiler algorithm that automatically detects the appropriate loop indices of a given nested loop and applies loop interchange and tiling in order to overlap communication with computatio...

Kazuaki Ishizaki; Hideaki Komatsu; Toshio Nakatani

1997-01-01T23:59:59.000Z

352

Categorical Exclusion Determinations: National Energy Technology Laboratory  

Broader source: Energy.gov (indexed) [DOE]

August 14, 2013 August 14, 2013 CX-010787: Categorical Exclusion Determination Fire Loop Soil Excavation CX(s) Applied: B3.1, B6.1 Date: 08/14/2013 Location(s): Oregon Offices(s): National Energy Technology Laboratory August 14, 2013 CX-010786: Categorical Exclusion Determination North Central Texas Alternative Fuel and Advanced Technology Investments CX(s) Applied: B5.23 Date: 08/14/2013 Location(s): Texas Offices(s): National Energy Technology Laboratory August 14, 2013 CX-010791: Categorical Exclusion Determination Gulf of Mexico Miocene Carbon Dioxide (CO2) Site Characterization Mega Transect CX(s) Applied: A9, A11 Date: 08/14/2013 Location(s): Texas Offices(s): National Energy Technology Laboratory August 14, 2013 CX-010792: Categorical Exclusion Determination Gulf of Mexico Miocene Carbon Dioxide (CO2) Site Characterization Mega

353

Sacramento Area Technology Alliance | Open Energy Information  

Open Energy Info (EERE)

Sacramento Area Technology Alliance Sacramento Area Technology Alliance Jump to: navigation, search Logo: Sacramento Area Technology Alliance Name Sacramento Area Technology Alliance Address 5022 Bailey Loop Place McClellan, California Zip 95652 Region Bay Area Coordinates 38.657365°, -121.390278° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.657365,"lon":-121.390278,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

354

Boosted Fast Flux Loop Final Report  

SciTech Connect (OSTI)

The Boosted Fast Flux Loop (BFFL) project was initiated to determine basic feasibility of designing, constructing, and installing in a host irradiation facility, an experimental vehicle that can replicate with reasonable fidelity the fast-flux test environment needed for fuels and materials irradiation testing for advanced reactor concepts. Originally called the Gas Test Loop (GTL) project, the activity included (1) determination of requirements that must be met for the GTL to be responsive to potential users, (2) a survey of nuclear facilities that may successfully host the GTL, (3) conceptualizing designs for hardware that can support the needed environments for neutron flux intensity and energy spectrum, atmosphere, flow, etc. needed by the experimenters, and (4) examining other aspects of such a system, such as waste generation and disposal, environmental concerns, needs for additional infrastructure, and requirements for interfacing with the host facility. A revised project plan included requesting an interim decision, termed CD-1A, that had objectives of' establishing the site for the project at the Advanced Test Reactor (ATR) at the Idaho National Laboratory (INL), deferring the CD 1 application, and authorizing a research program that would resolve the most pressing technical questions regarding GTL feasibility, including issues relating to the use of booster fuel in the ATR. Major research tasks were (1) hydraulic testing to establish flow conditions through the booster fuel, (2) mini-plate irradiation tests and post-irradiation examination to alleviate concerns over corrosion at the high heat fluxes planned, (3) development and demonstration of booster fuel fabrication techniques, and (4) a review of the impact of the GTL on the ATR safety basis. A revised cooling concept for the apparatus was conceptualized, which resulted in renaming the project to the BFFL. Before the subsequent CD-1 approval request could be made, a decision was made in April 2006 that further funding for the project would be suspended. Remaining funds have been used to prepare and irradiate mini-plates of the proposed booster fuel. The current baseline design is for a set of three test positions inside an in-pile tube with a thermal neutron absorber and heat sink made of aluminum mixed with hafnium. Operating the ATR at power levels needed to achieve the required fast flux will result in an estimated increase in ATR fuel consumption between 15 and 20% above present rates and a reduction in the time between fuel replacements. Preliminary safety analyses conducted have indicted safe operation of the ATR with the GTL under normal, abnormal, and postulated accident conditions. More comprehensive analyses are needed.

Boosted Fast Flux Loop Project Staff

2009-09-01T23:59:59.000Z

355

PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program  

E-Print Network [OSTI]

PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program publication is funded by the Division to them in California. TECHNOLOGY TRANSFER PROGRAM MAY 2011, VOL. 3, NO. 1 California's Transition

California at Berkeley, University of

356

Double-winding Wilson loops and monopole confinement mechanisms  

E-Print Network [OSTI]

We consider "double-winding" Wilson loops in SU(2) gauge theory. These are contours which wind once around a loop $C_1$ and once around a loop $C_2$, where the two co-planar loops share one point in common, and where $C_1$ lies entirely in (or is displaced slightly from) the minimal area of $C_2$. We discuss the expectation value of such double-winding loops in abelian confinement pictures, where the spatial distribution of confining abelian fields is controlled by either a monopole Coulomb gas, a caloron ensemble, or a dual abelian Higgs model, and argue that in such models an exponential falloff in the sum of areas $A_1+A_2$ is expected. In contrast, in a center vortex model of confinement, the behavior is an exponential falloff in the difference of areas $A_2-A_1$. We compute such double-winding loops by lattice Monte Carlo simulation, and find that the area law falloff follows a difference-in-areas law. The conclusion is that even if confining gluonic field fluctuations are, in some gauge, mainly abelian in character, the spatial distribution of those abelian fields cannot be the distribution predicted by the simple monopole gas, caloron ensemble, or dual abelian Higgs actions, which have been used in the past to explain the area law falloff of Wilson loops.

Jeff Greensite; Roman Hllwieser

2014-11-19T23:59:59.000Z

357

Instability of single-phase natural circulation under multiple loops  

SciTech Connect (OSTI)

Natural circulation loop passively conveys heat from heat sources to heat sinks without mechanical pump. Various plants have natural circulation systems, e.g., solar heaters, Light Water Reactor (LWR) and Liquid Metal Fast Breeder Reactor (LMFBR). The core of LMFBR is cooled by forced convection of single-phase liquid sodium in normal operation. After the accident, the decay heat of the core is designed to be cooled by the natural circulation of the liquid sodium. The natural circulation cooling is very important from a viewpoint of passive safety concept. Here, the natural circulation in single loop system had been studied by many researchers. In a multiple loop system, the instability of natural circulation was more complicated because of the interaction between the loops. In this study, the effects of the multiple loop on the natural circulation instability were investigated numerically. The multiple loops system with one heating tube and two cooling tubes were evaluated. The one-dimensional energy and momentum equations were solved using Finite Difference Method. The flow regimes of the instability were evaluated with varying the heat flux. In multiple loop system, the observed flow was classified into five regimes including chaotic regime. The flow regimes were qualitatively explained by the stability of the attractor in the phase space.

Satoh, A.; Okamoto, K.; Madarame, H. [Univ. of Tokyo, Tokai, Ibaraki (Japan). Nuclear Engineering Research Lab.

1996-08-01T23:59:59.000Z

358

Program permits fast solution to pipeline loop requirements  

SciTech Connect (OSTI)

A program developed for the HP-41CV hand-held calculator can provide pipeline engineers with a quick and easy means for determining loop requirements on existing gas-transmission pipelines. Adding pipe in parallel to an existing pipeline, referred to as looping, is necessary to insure that with a given flow rate, the gas will arrive at a certain point on the pipeline with a pressure equal to or greater than the minimum required pressure. The automatic loop program calculates loop by first determining the total number of segments which require looping within the section of pipeline being evaluated. A section of pipe is usually the pipeline between compressor stations and is divided into segments by either receipt or delivery points along the pipeline. The number of segments which require looping is found by adding loop to individual segments until the final pressure (i.e., the pressure at the point of interest downstream on the pipeline) is equal to or greater than the specified design pressure.

Bierman, G.D.

1983-10-31T23:59:59.000Z

359

Laser photon statistics in the feedback loop  

E-Print Network [OSTI]

A mere correspondence between the electron statistics and the photon one vanishes in the feedback loop (FBL). It means that the direct photodetection, supplying us with the electron statistics, does not provide us with a wished information about the laser photon statistics. For getting this information we should think up another measurement procedure, and we in the article suggest applying the three-level laser as a auxiliary measuring device. This laser has impressive property, namely, its photon statistics survive information about the initial photon statistics of the laser which excites coherently the three-level medium. Thus, if we choose the laser in the FBL as exciting the three-level laser, then we have an possibility to evaluate its initial photon statistics by means of direct detecting the three-level laser emission. Finally, this approach allows us to conclude the feedback is not capable of creating a regularity in the laser light beam. Contrary, the final photon fluctuations turn out to be always even bigger. The mentioned above feature of the three-level laser takes place only for the strong interaction between the lasers (exciting and excited). It means the initial state of the exciting laser is changed dramatically, so our measurement procedure can not be identified with some non-demolition one.

T. Yu. Golubeva; Yu. M. Golubev

2005-04-23T23:59:59.000Z

360

An investigation of steam production in chemical-looping combustion (CLC) and chemical-looping with oxygen uncoupling (CLOU) for solid fuels  

Science Journals Connector (OSTI)

Abstract Chemical-looping combustion (CLC) and chemical-looping with oxygen uncoupling (CLOU) are being actively explored as solid fuel combustion technologies that have the potential to facilitate CO2 capture. While CLC and CLOU have similarities operationally, there are some key differences. In particular, the CLC process requires a coal gasification step where coal is first broken down into a syngas with the use of steam or CO2. The resulting syngas is then oxidized with the metal oxide to release energy. In the CLOU process the metal oxide releases oxygen that combusts the solid fuel, resulting in a lower residence time, as the coal gasification reactions are avoided. The CLC and CLOU systems were modeled with ASPEN Plus at a 10 \\{MWth\\} scale, and the process streams were analyzed by ASPEN Energy Analyzer to determine the amount of industrial process steam that could be generated from CLC or CLOU. Both the air and fuel reactor were analyzed as two circulating fluidized beds, with metal oxide circulating between the two reactors. The air reactor, where metal oxide is oxidized, was fluidized with air. The fuel reactor, where the metal oxide is reduced, was fluidized with steam for CLC and recirculated CO2 for CLOU. It was identified that the CLOU process had the potential to produce more steam, approximately 7920kg/hr, as compared to CLC (6910kg/hr).

J.K. Dansie; A.H. Sahir; M.A. Hamilton; J.S. Lighty

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Folding of a DNA Hairpin Loop Structure in Explicit SolventUsingRepli...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Folding of a DNA Hairpin Loop Structure in Explicit Solvent UsingReplica-Exchange Molecular Dynamics Simulations. Folding of a DNA Hairpin Loop Structure in Explicit Solvent...

362

Direct-contact closed-loop heat exchanger  

DOE Patents [OSTI]

A high temperature heat exchanger is disclosed which has a closed loop and a heat transfer liquid within the loop, the closed loop having a first horizontal channel with inlet and outlet means for providing direct contact of a first fluid at a first temperature with the heat transfer liquid, a second horizontal channel with inlet and outlet means for providing direct contact of a second fluid at a second temperature with the heat transfer liquid, and means for circulating the heat transfer liquid.

Berry, G.F.; Minkov, V.; Petrick, M.

1981-11-02T23:59:59.000Z

363

Model-guided empirical tuning of loop fusion  

Science Journals Connector (OSTI)

Loop fusion is recognised as an effective transformation for improving memory hierarchy performance. However, unconstrained loop fusion can lead to poor performance because of increased register pressure and cache conflict misses. In this paper, we present a cache-conscious analytical model for profitable loop fusion. We use this model to tune fusion parameters for different architectures through empirical search. Experiments on four different platforms for a set of applications show significant speedup over fully optimised code generated by state-of-the-art commercial compilers.

Apan Qasem; Ken Kennedy

2008-01-01T23:59:59.000Z

364

Bimetallic FeNi Oxygen Carriers for Chemical Looping Combustion  

Science Journals Connector (OSTI)

(2-4) In CLC (schematic in Figure 1), a fuel is combusted in a fuel reactor (reducer) in contact with an oxygen carrier (typically a metal oxide). ... After combustion of the fuel, the reduced metal is then transferred to the air reactor (oxidizer) where it is reoxidized by air, and then circulated back to the reducer to close the material loop. ... Son, S. R.; Kim, S. D.Chemical-looping combustion with NiO and Fe2O3 in a thermobalance and circulating fluidized bed reactor with double loops Ind. Eng. ...

Saurabh Bhavsar; Gtz Veser

2013-05-20T23:59:59.000Z

365

The circular loop antenna over a lossy dielectric slab  

E-Print Network [OSTI]

interfaces. The method of moments is employed to solve the resulting 1ntegral equations for the current distribut1on on the loop. With the current distribution determined, the input impedance and input admit- tance are calculated. The electromagnetic f1... of the current density can be neglected. For the loop antenna, the surface current density can be written as (2. 3a) where $' = cos(4 - $') f + sin(4 - 4 ')p (2. 3b) In developing an integral equation to represent the loop, the observation point is located...

Overly, Michael Robert

2012-06-07T23:59:59.000Z

366

Technology Transfer  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Energy Efficiency & Renewable and Energy - Commercialization Energy Efficiency & Renewable and Energy - Commercialization Deployment SBIR/STTR - Small Business Innovation Research and Small Business Technology Transfer USEFUL LINKS Contract Opportunities: FBO.gov FedConnect.net Grant Opportunities DOE Organization Chart Association of University Technology Managers (AUTM) Federal Laboratory Consortium (FLC) Feedback Contact us about Tech Transfer: Mary.McManmon@science.doe.gov Mary McManmon, 202-586-3509 link to Adobe PDF Reader link to Adobe Flash player Licensing Guide and Sample License The Technology Transfer Working Group (TTWG), made up of representatives from each DOE Laboratory and Facility, recently created a Licensing Guide and Sample License [762-KB PDF]. The Guide will serve to provide a general understanding of typical contract terms and provisions to help reduce both

367

Technology Application Centers: Facilitating Technology Transfer  

E-Print Network [OSTI]

transfer plus technology application. A&C Enercom has learned from experience that technology deployment will not occur unless utilities achieve both technology transfer (e.g, the dissemination of information) and technology application (e.g., the direct...

Kuhel, G. J.

368

NETL: 2013 Conference Proceedings - 2013 NETL CO2 Capture Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2013 NETL CO2 Capture Technology Meeting 2013 NETL CO2 Capture Technology Meeting July 8-11, 2013 Previous Proceedings 2012: NETL CO2 Capture Technology Meeting 2011: NETL CO2 Capture Technology Meeting 2010: NETL CO2 Capture Technology Meeting 2009: Annual NETL CO2 Capture Technology for Existing Plants R&D Meeting Proceedings of the 2013 NETL CO2 Capture Technology Meeting Table of Contents Presentations Monday, July 8 Opening/Overview Post-Combustion Sorbent-Based Capture Tuesday, July 9 Post-Combustion Solvent-Based Capture CO2 Compression Wednesday, July 10 Post-Combustion Membrane-Based Capture Pre-Combustion Capture Projects Thursday, July 11 ARPA-E Capture Projects System Studies and Modeling Oxy-Combustion and Chemical Looping Posters PRESENTATIONS Monday, July 8, 2013 Opening/Overview Introduction [PDF-MB]

369

Manufacturing technology  

SciTech Connect (OSTI)

The specific goals of the Manufacturing Technology thrust area are to develop an understanding of fundamental fabrication processes, to construct general purpose process models that will have wide applicability, to document our findings and models in journals, to transfer technology to LLNL programs, industry, and colleagues, and to develop continuing relationships with industrial and academic communities to advance our collective understanding of fabrication processes. Advances in four projects are described here, namely Design of a Precision Saw for Manufacturing, Deposition of Boron Nitride Films via PVD, Manufacturing and Coating by Kinetic Energy Metallization, and Magnet Design and Application.

Blaedel, K.L.

1997-02-01T23:59:59.000Z

370

FEMP/NTDP Technology Focus New Technology  

E-Print Network [OSTI]

FEMP/NTDP Technology Focus New Technology Demonstration Program Technology Focus FEMPFederal Energy Management Program Trends in Energy Management Technology: BCS Integration Technologies ­ Open Communications into a complete EMCIS. The first article [1] covered enabling technologies for emerging energy management systems

371

MnFe Oxides with Support of MgAl2O4, CeO2, ZrO2 and Y2O3ZrO2 for Chemical-Looping Combustion and Chemical-Looping with Oxygen Uncoupling  

Science Journals Connector (OSTI)

Department of Environmental Inorganic Chemistry, Chalmers University of Technology, S-412 96 Gteborg, Sweden ... Shen, L.; Wu, J.; Gao, Z.; Xiao, J.Reactivity deterioration of NiO/Al2O3 oxygen carrier for chemical looping combustion of coal in a 10 kWth reactor Combust. ...

Golnar Azimi; Henrik Leion; Tobias Mattisson; Magnus Rydn; Frans Snijkers; Anders Lyngfelt

2014-06-03T23:59:59.000Z

372

High Spatial Resolution Observations of Loops in the Solar Corona  

E-Print Network [OSTI]

Understanding how the solar corona is structured is of fundamental importance to determining how the Sun's upper atmosphere is heated to high temperatures. Recent spectroscopic studies have suggested that an instrument with a spatial resolution of 200km or better is necessary to resolve coronal loops. The High Resolution Coronal Imager (Hi-C) achieved this performance on a rocket flight in July 2012. We use Hi-C data to measure the Gaussian widths of 91 loops observed in the solar corona and find a distribution that peaks at about 270km. We also use Atmospheric Imaging Assembly (AIA) data for a subset of 79 of these loops and find that their temperature distributions are narrow. These observations provide further evidence that loops in the solar corona are structured at a scale of several hundred kilometers, well above the spatial scale of proposed physical mechanisms.

Brooks, David H; Ugarte-Urra, Ignacio; Winebarger, Amy R

2013-01-01T23:59:59.000Z

373

HIGH SPATIAL RESOLUTION OBSERVATIONS OF LOOPS IN THE SOLAR CORONA  

SciTech Connect (OSTI)

Understanding how the solar corona is structured is of fundamental importance to determine how the Sun's upper atmosphere is heated to high temperatures. Recent spectroscopic studies have suggested that an instrument with a spatial resolution of 200 km or better is necessary to resolve coronal loops. The High Resolution Coronal Imager (Hi-C) achieved this performance on a rocket flight in 2012 July. We use Hi-C data to measure the Gaussian widths of 91 loops observed in the solar corona and find a distribution that peaks at about 270 km. We also use Atmospheric Imaging Assembly data for a subset of these loops and find temperature distributions that are generally very narrow. These observations provide further evidence that loops in the solar corona are often structured at a scale of several hundred kilometers, well above the spatial scale of many proposed physical mechanisms.

Brooks, David H.; Ugarte-Urra, Ignacio [College of Science, George Mason University, 4400 University Drive, Fairfax, VA 22030 (United States); Warren, Harry P. [Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States); Winebarger, Amy R. [NASA Marshall Space Flight Center, ZP 13, Huntsville, AL 35812 (United States)

2013-08-01T23:59:59.000Z

374

Progress of energy system with chemical-looping combustion  

Science Journals Connector (OSTI)

Chemical-looping combustion with zero energy penalty of CO2...separation is a significant breakthrough in resolving energy and environment problems for power generation systems. This paper summarizes the research...

HongGuang Jin; Hui Hong; Tao Han

2009-03-01T23:59:59.000Z

375

Local gauge-invariant generators for Wilson loops  

Science Journals Connector (OSTI)

A complete and irreducible set of gauge-invariant local generators for Wilson loops in a pure Yang-Mills theory is constructed. A few comments are made about their relevance in quantum theory in the 1N approximation scheme.

M. Azam

1989-11-15T23:59:59.000Z

376

How are Feynman graphs resumed by the Loop Vertex Expansion?  

E-Print Network [OSTI]

The purpose of this short letter is to clarify which set of pieces of Feynman graphs are resummed in a Loop Vertex Expansion, and to formulate a conjecture on the $\\phi^4$ theory in non-integer dimension.

Vincent Rivasseau; Zhituo Wang

2010-06-23T23:59:59.000Z

377

Building Energy Software Tools Directory: Ground Loop Design  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ground Loop Design Ground Loop Design Ground Loop Design logo Ground Loop Design is a versatile ground source heat pump system design program that helps the trained geothermal HVAC designer/engineer size equipment, determine the correct lengths of bore or pipe required for commercial projects, optimize the piping configuration for balanced flow and optimal heat transfer, and calculate the annual and lifetime energy/operating/emissions costs associated with the design. The modular program enhances design productivity and permits flexibility in the designing process and customization based on designer preferences. It also has an English/metric conversion engine and is available in many languages, providing applicability to the widest range of equipment and customers. Screen Shots

378

(Environmental technology)  

SciTech Connect (OSTI)

The traveler participated in a conference on environmental technology in Paris, sponsored by the US Embassy-Paris, US Environmental Protection Agency (EPA), the French Environmental Ministry, and others. The traveler sat on a panel for environmental aspects of energy technology and made a presentation on the potential contributions of Oak Ridge National Laboratory (ORNL) to a planned French-American Environmental Technologies Institute in Chattanooga, Tennessee, and Evry, France. This institute would provide opportunities for international cooperation on environmental issues and technology transfer related to environmental protection, monitoring, and restoration at US Department of Energy (DOE) facilities. The traveler also attended the Fourth International Conference on Environmental Contamination in Barcelona. Conference topics included environmental chemistry, land disposal of wastes, treatment of toxic wastes, micropollutants, trace organics, artificial radionuclides in the environment, and the use biomonitoring and biosystems for environmental assessment. The traveler presented a paper on The Fate of Radionuclides in Sewage Sludge Applied to Land.'' Those findings corresponded well with results from studies addressing the fate of fallout radionuclides from the Chernobyl nuclear accident. There was an exchange of new information on a number of topics of interest to DOE waste management and environmental restoration needs.

Boston, H.L.

1990-10-12T23:59:59.000Z

379

COMMERCIALIZING TECHNOLOGIES &  

E-Print Network [OSTI]

measurement." Dan Gillings President Applied Technology Associates NMSBA reduced my manufacturing costs by 20 a patent for a revolutionary new, even more shock absorbent mouthguard they will manufacture from material including a new additive. 2 Animated Talking Toys Heilbron Associates had acquired rights to a fiber optic

380

Loop quantum cosmology in 2+1 dimension  

E-Print Network [OSTI]

As a first step to generalize the structure of loop quantum cosmology to the theories with the spacetime dimension other than four, the isotropic model of loop quantum cosmology in 2+1 dimension is studied in this paper. We find that the classical big bang singularity is again replaced by a quantum bounce in the model. The similarities and differences between the 2+1 dimensional model and the 3+1 dimensional one are also discussed.

Xiangdong Zhang

2014-11-19T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Vacuum Technology  

SciTech Connect (OSTI)

The environmental condition called vacuum is created any time the pressure of a gas is reduced compared to atmospheric pressure. On earth we typically create a vacuum by connecting a pump capable of moving gas to a relatively leak free vessel. Through operation of the gas pump the number of gas molecules per unit volume is decreased within the vessel. As soon as one creates a vacuum natural forces (in this case entropy) work to restore equilibrium pressure; the practical effect of this is that gas molecules attempt to enter the evacuated space by any means possible. It is useful to think of vacuum in terms of a gas at a pressure below atmospheric pressure. In even the best vacuum vessels ever created there are approximately 3,500,000 molecules of gas per cubic meter of volume remaining inside the vessel. The lowest pressure environment known is in interstellar space where there are approximately four molecules of gas per cubic meter. Researchers are currently developing vacuum technology components (pumps, gauges, valves, etc.) using micro electro mechanical systems (MEMS) technology. Miniature vacuum components and systems will open the possibility for significant savings in energy cost and will open the doors to advances in electronics, manufacturing and semiconductor fabrication. In conclusion, an understanding of the basic principles of vacuum technology as presented in this summary is essential for the successful execution of all projects that involve vacuum technology. Using the principles described above, a practitioner of vacuum technology can design a vacuum system that will achieve the project requirements.

Biltoft, P J

2004-10-15T23:59:59.000Z

382

Periodic gravitational waves from small cosmic string loops  

Science Journals Connector (OSTI)

We consider a population of small, high-velocity cosmic string loops. We assume the typical length of these loops is determined by the gravitational radiation scale and use the results of Polchinski and Rocha which pointed out their highly relativistic nature. A study of the gravitational wave emission from such a population is carried out. The large Lorentz boost involved causes the lowest harmonics of the loops to fall within the frequency band of the Laser Interferometer Gravitational Wave Observatory detector. Because of this feature the gravitational waves emitted by such loops can be detected in a periodic search rather than in burst or stochastic analysis. It is shown that, for interesting values of the string tension (10-10?G??10-8), the detector can observe loops at reasonably high redshifts and that detection is, in principle, possible. We compute the number of expected observations produced by such a process. For a 10h search we find that this number is of order O(10-4). This is a consequence of the low effective number density of the loops traveling along the line of sight. However, small probabilities of reconnection and longer observation times can improve the result.

Florian Dubath and Jorge V. Rocha

2007-07-02T23:59:59.000Z

383

Double-winding Wilson loops and monopole confinement mechanisms  

E-Print Network [OSTI]

We consider "double-winding" Wilson loops in SU(2) gauge theory. These are contours which wind once around a loop $C_1$ and once around a loop $C_2$, where the two co-planar loops share one point in common, and where $C_1$ lies entirely in (or is displaced slightly from) the minimal area of $C_2$. We discuss the expectation value of such double-winding loops in abelian confinement pictures, where the spatial distribution of confining abelian fields is controlled by either a monopole Coulomb gas, a caloron ensemble, or a dual abelian Higgs model, and argue that in such models an exponential falloff in the sum of areas $A_1+A_2$ is expected. In contrast, in a center vortex model of confinement, the behavior is an exponential falloff in the difference of areas $A_2-A_1$. We compute such double-winding loops by lattice Monte Carlo simulation, and find that the area law falloff follows a difference-in-areas law. The conclusion is that even if confining gluonic field fluctuations are, in some gauge, mainly abelian ...

Greensite, Jeff

2014-01-01T23:59:59.000Z

384

Wilson loops to 20th order numerical stochastic perturbation theory  

Science Journals Connector (OSTI)

We calculate perturbative contributions of Wilson loops of various sizes up to order 20 in SU(3) pure lattice gauge theory at different lattice sizes for the Wilson gauge action using the technique of numerical stochastic perturbation theory. This allows us to investigate the perturbative series for various Wilson loops at high orders of the perturbation theory. We observe differences in the behavior of the series as a function of the loop order n. Up to n=20 we do not find evidence for the factorial growth of the expansion coefficients often assumed to characterize an asymptotic series. Based on the actually observed behavior we sum the series in a model parametrized by hypergeometric functions. For Wilson loops of moderate sizes the summed series in boosted perturbation theory reach stable plateaus for moderate perturbative order already. The coefficients in the boosted series become much more stable in the result of smoothing the coefficients of the original series effected by the hypergeometric model. We introduce generalized ratios of Wilson loops of different sizes. Together with the corresponding Wilson loops from standard MonteCarlo measurements they enable us to assess their nonperturbative parts.

R. Horsley; G. Hotzel; E.-M. Ilgenfritz; R. Millo; H. Perlt; P. E. L. Rakow; Y. Nakamura; G. Schierholz; A. Schiller

2012-09-06T23:59:59.000Z

385

Australian Science and Technology with Relevance to Beamed Energy Propulsion  

SciTech Connect (OSTI)

Although Australia has no Beamed Energy Propulsion programs at the present time, it is accomplishing significant scientific and technological activity that is of potential relevance to Beamed Energy Propulsion (BEP). These activities include: continual upgrading and enhancement of the Woomera Test Facility, Which is ideal for development and test of high power laser or microwave systems and the flight vehicles they would propel; collaborative development and test, with the US and UK of hypersonic missiles that embody many features needed by beam-propelled flight vehicles; hypersonic air breathing propulsion systems that embody inlet-engine-nozzle features needed for beam-riding agility by air breathing craft; and research on specially conditioned EM fields that could reduce beamed energy lost during atmospheric propagation.

Froning, H. David Jr [PO Box 180, Gumeracha SA 5233 (Australia)

2008-04-28T23:59:59.000Z

386

Supersonic Technology for CO2 Capture: A High Efficiency Inertial CO2 Extraction System  

SciTech Connect (OSTI)

IMPACCT Project: Researchers at ATK and ACENT Laboratories are developing a device that relies on aerospace wind-tunnel technologies to turn CO2 into a condensed solid for collection and capture. ATKs design incorporates a special nozzle that converges and diverges to expand flue gas, thereby cooling it off and turning the CO2 into solid particles which are removed from the system by a cyclonic separator. This technology is mechanically simple, contains no moving parts and generates no chemical waste, making it inexpensive to construct and operate, readily scalable, and easily integrated into existing facilities. The increase in the cost to coal-fired power plants associated with introduction of this system would be 50% less than current technologies.

None

2010-07-01T23:59:59.000Z

387

Daemen Alternative Energy/Geothermal Technologies Demonstration Program Erie County  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

US DOE Geothermal Program US DOE Geothermal Program eere.energy.gov Public Service of Colorado Ponnequin Wind Farm Geothermal Technologies Program 2010 Peer Review Daemen Alternative Energy/Geothermal Technologies Demonstration Program Erie County Robert C. Beiswanger, Jr. Daemen College May 20, 2010 This presentation does not contain any proprietary confidential, or otherwise restricted information. Insert photo of your choice 2 | US DOE Geothermal Program eere.energy.gov DAEMEN COLLEGE Open Loop, Geo-exchange System Geothermal Technologies Program 2010 Peer Review May 20, 2010 3 | US DOE Geothermal Program eere.energy.gov DAEMEN COLLEGE Open Loop, Geo-exchange System Principal Investigators Robert C. Beiswanger Jr. Vice President for Business Affairs and Treasurer Dr. Edwin G. Clausen Vice President for Academic Affairs and Dean of the College

388

A study of the augmented Lagrangian method for open loop and closed loop constrained multibody dynamic systems  

E-Print Network [OSTI]

The primary objective of this thesis is to study the augmented Lagrangian method for open and closed loop constrained multibody dynamic systems. Much research has been carried out for the performance of the augmented Lagrangian formulation for open...

Webb, Glenn Viktor

2012-06-07T23:59:59.000Z

389

Three-loop on-shell charge renormalization without integration: \\(\\Lambda _{QED}^{\\overline {MS} } \\) to four loops  

Science Journals Connector (OSTI)

Using algebraic methods, we find the three-loop relation between the bare and physical couplings of one-flavourD-dimensional QED, in terms of ? functions and a singleF 32 series, whose expansion n...

D. J. Broadhurst

1992-01-01T23:59:59.000Z

390

Carbon capture and storage (CCS) technologies and economic investment opportunities in the UK  

Science Journals Connector (OSTI)

This article reviews the role played by carbon and capture (CCS) technologies in order to facilitate the transition to low-carbon emitting technologies in the medium-term. More precisely, we address the following central questions: how will the development of CCS technologies impact energy policies in order to yield to sustainable energy solutions? At what costs will pollution reductions be achieved? And most importantly, which CCS technologies will turn out to offer the most effective and efficient solution to handle the challenge of the increased demand for energy within the context of the climate change? We critically assess the technology readiness levels of various CCS technologies post-combustion capture, pre-combustion capture, amine scrubbing, oxyfuel, integrated gasification combined cycle, calcium looping and chemical looping based on the best available evidence to date.

Julien Chevallier

2010-01-01T23:59:59.000Z

391

Loop Recreation for Thread-Level Speculation Lin Gao, Lian Li and Jingling Xue  

E-Print Network [OSTI]

Loop Recreation for Thread-Level Speculation Lin Gao, Lian Li and Jingling Xue University of New. This paper presents a novel compiler tech- nique, called loop recreation, to transform a loop into a prologue the concept by giving an algorithm for find- ing an optimal loop recreation with respect to a simple

Xue, Jingling

392

A loop of SU(2) gauge fields stable under the Yang-Mills flow  

E-Print Network [OSTI]

A loop of SU(2) gauge fields stable under the Yang-Mills flow Daniel Friedan Department of Physics The gradient flow of the Yang-Mills action acts pointwise on closed loops of gauge fields. We construct in perturbations of the loop. The stable loop might play a role in physics as a classical winding mode

Friedan, Daniel

393

Evaluation of Novel Ceria-Supported Metal Oxides As Oxygen Carriers for Chemical-Looping Combustion  

E-Print Network [OSTI]

Evaluation of Novel Ceria-Supported Metal Oxides As Oxygen Carriers for Chemical-Looping Combustion and examined as oxygen carrier materials for chemical-looping combustion (CLC). Unlike conventional support agglomeration. 1. INTRODUCTION 1.1. Chemical-Looping Combustion. Chemical-looping combustion (CLC

Azad, Abdul-Majeed

394

An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control  

Broader source: Energy.gov [DOE]

Describes glow plug with integrated pressure sensor for closed-loop control of diesel engine combustion

395

Theory and Algorithms for Software Pipelining with Minimal Cost on Nested Loops  

E-Print Network [OSTI]

Theory and Algorithms for Software Pipelining with Minimal Cost on Nested Loops Qingfeng Zhuge. However, little research has been done for the software pipelining problem on nested loops. The existing software pipelining techniques for single loops can only explore the innermost loop parallelism of a nested

Sha, Edwin

396

TECHNOLOGY TRANSFER  

Broader source: Energy.gov (indexed) [DOE]

404-NOV. 1, 2000 404-NOV. 1, 2000 TECHNOLOGY TRANSFER COMMERCIALIZATION ACT OF 2000 VerDate 11-MAY-2000 04:52 Nov 16, 2000 Jkt 089139 PO 00000 Frm 00001 Fmt 6579 Sfmt 6579 E:\PUBLAW\PUBL404.106 APPS27 PsN: PUBL404 114 STAT. 1742 PUBLIC LAW 106-404-NOV. 1, 2000 Public Law 106-404 106th Congress An Act To improve the ability of Federal agencies to license federally owned inventions. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, SECTION 1. SHORT TITLE. This Act may be cited as the ''Technology Transfer Commer- cialization Act of 2000''. SEC. 2. FINDINGS. The Congress finds that- (1) the importance of linking our unparalleled network of over 700 Federal laboratories and our Nation's universities with United States industry continues to hold great promise

397

Use of Multiple Reheat Helium Brayton Cycles to Eliminate the Intermediate Heat Transfer Loop for Advanced Loop Type SFRs  

SciTech Connect (OSTI)

The sodium intermediate heat transfer loop is used in existing sodium cooled fast reactor (SFR) plant design as a necessary safety measure to separate the radioactive primary loop sodium from the water of the steam Rankine power cycle. However, the intermediate heat transfer loop significantly increases the SFR plant cost and decreases the plant reliability due to the relatively high possibility of sodium leakage. A previous study shows that helium Brayton cycles with multiple reheat and intercooling for SFRs with reactor outlet temperature in the range of 510C to 650C can achieve thermal efficiencies comparable to or higher than steam cycles or recently proposed supercritical CO2 cycles. Use of inert helium as the power conversion working fluid provides major advantages over steam or CO2 by removing the requirement for safety systems to prevent and mitigate the sodium-water or sodium-CO2 reactions. A helium Brayton cycle power conversion system therefore makes the elimination of the intermediate heat transfer loop possible. This paper presents a pre-conceptual design of multiple reheat helium Brayton cycle for an advanced loop type SFR. This design widely refers the new horizontal shaft distributed PBMR helium power conversion design features. For a loop type SFR with reactor outlet temperature 550C, the design achieves 42.4% thermal efficiency with favorable power density comparing with high temperature gas cooled reactors.

Haihua Zhao; Hongbin Zhang; Samuel E. Bays

2009-05-01T23:59:59.000Z

398

Emerging technologies  

SciTech Connect (OSTI)

The mission of the Emerging Technologies thrust area at Lawrence Livermore National Laboratory is to help individuals establish technology areas that have national and commercial impact, and are outside the scope of the existing thrust areas. We continue to encourage innovative ideas that bring quality results to existing programs. We also take as our mission the encouragement of investment in new technology areas that are important to the economic competitiveness of this nation. In fiscal year 1992, we have focused on nine projects, summarized in this report: (1) Tire, Accident, Handling, and Roadway Safety; (2) EXTRANSYT: An Expert System for Advanced Traffic Management; (3) Odin: A High-Power, Underwater, Acoustic Transmitter for Surveillance Applications; (4) Passive Seismic Reservoir Monitoring: Signal Processing Innovations; (5) Paste Extrudable Explosive Aft Charge for Multi-Stage Munitions; (6) A Continuum Model for Reinforced Concrete at High Pressures and Strain Rates: Interim Report; (7) Benchmarking of the Criticality Evaluation Code COG; (8) Fast Algorithm for Large-Scale Consensus DNA Sequence Assembly; and (9) Using Electrical Heating to Enhance the Extraction of Volatile Organic Compounds from Soil.

Lu, Shin-yee

1993-03-01T23:59:59.000Z

399

Ca0.9Mn0.5Ti0.5O3??: A Suitable Oxygen Carrier Material for Fixed-Bed Chemical Looping Combustion under Syngas Conditions  

Science Journals Connector (OSTI)

Ca0.9Mn0.5Ti0.5O3??: A Suitable Oxygen Carrier Material for Fixed-Bed Chemical Looping Combustion under Syngas Conditions ... Power generation using chemical looping combustion (CLC) technology has emerged as a promising CO2-capture-based alternative to conventional technology. ... Because of the high oxidation enthalpy, Ca0.9Mn0.5Ti0.5O3?? does not give full combustion of the syngas; still 95% conversion is achieved. ...

Mehdi Pishahang; Yngve Larring; Michael McCann; Rune Bredesen

2014-06-06T23:59:59.000Z

400

Binary nucleation rates for ethanol/water mixtures in supersonic Laval nozzles: Analyses by the first and second nucleation theorems  

SciTech Connect (OSTI)

We performed pressure trace measurements and small angle x-ray scattering measurements to determine the vapor-liquid nucleation rates of EtOH/H{sub 2}O mixtures including pure EtOH and pure H{sub 2}O in two supersonic Laval nozzles with different expansion rates. The nucleation rates varied from 0.9 10{sup 17} to 16 10{sup 17} cm{sup ?3} s{sup ?1} over the temperature range of 210 K to 230 K, EtOH activity range of 0 to 11.6, and H{sub 2}O activity range of 0 to 124. The first and second nucleation theorems were applied to the nucleation rates to estimate the sizes, compositions, and excess energies of the critical clusters. The critical clusters contained from 4 to 15 molecules for pure H{sub 2}O and EtOH/H{sub 2}O clusters, and from 16 to 23 molecules for pure EtOH clusters. Comparing the excess energies of the pure H{sub 2}O critical clusters with the results of a quantum-chemistry calculation suggested that the pre-factor of the theoretical nucleation rate is almost constant regardless of the monomer concentration. One possible explanation for this result is that cooling of the critical clusters limits the nucleation rate under the highly supersaturated conditions. The results of the analyses also yielded the relation between the surface energy and the composition of the critical clusters, where the latter are predicted to consist only of surface molecules. Applying this relationship to the EtOH/H{sub 2}O bulk liquid mixtures, we estimated the EtOH mole fraction in the surface layer and found it is higher than that derived from the surface tension based on the Gibbs adsorption equation when the EtOH mole fraction in the liquid is higher than about 0.2 mol/mol. This discrepancy was attributed to the existence of the EtOH depletion layer just below the surface layer of the liquid.

Tanimura, Shinobu; Pathak, Harshad [William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 West 19th Av., Columbus, Ohio 43210 (United States)] [William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 West 19th Av., Columbus, Ohio 43210 (United States); Wyslouzil, Barbara E. [William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 West 19th Av., Columbus, Ohio 43210 (United States) [William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 West 19th Av., Columbus, Ohio 43210 (United States); Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210 (United States)

2013-11-07T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Building Technologies Office: About Emerging Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Emerging Technologies Emerging Technologies The Emerging Technologies team funds the research and development of cost-effective, energy-efficient building technologies within five years of commercialization. Learn more about the: Key Technologies Benefits Results Key Technologies Specific technologies pursued within the Emerging Technologies team include: Lighting: advanced solid-state lighting systems, including core technology research and development, manufacturing R&D, and market development Heating, ventilation, and air conditioning (HVAC): heat pumps, heat exchangers, and working fluids Building Envelope: highly insulating and dynamic windows, cool roofs, building thermal insulation, façades, daylighting, and fenestration Water Heating: heat pump water heaters and solar water heaters

402

Operational Results of a Closed Brayton Cycle Test-Loop  

SciTech Connect (OSTI)

A number of space and terrestrial power system designs plan to use nuclear reactors that are coupled to Closed-loop Brayton Cycle (CBC) systems to generate electrical power. Because very little experience exists regarding the operational behavior of these systems, Sandia National Laboratories (through its Laboratory Directed Research and Development program) is developing a closed-loop test bed that can be used to determine the operational behavior of these systems and to validate models for these systems. Sandia has contracted Barber-Nichols Corporation to design, fabricate, and assemble a Closed-loop Brayton Cycle (CBC) system. This system was developed by modifying commercially available hardware. It uses a 30 kWe Capstone C-30 gas-turbine unit (www.capstoneturbine.com) with a modified housing that permits the attachment of an electrical heater and a water cooled chiller that are connected to the turbo-machinery in a closed loop. The test-loop reuses the Capstone turbine, compressor, and alternator. The Capstone system's nominal operating point is 1150 K turbine inlet temperature at 96,000 rpm. The annular recuperator and portions of the Capstone control system (inverter) and starter system are also reused. The rotational speed of the turbo-machinery is controlled either by adjusting the alternator load by either using the electrical grid or a separate load bank. This report describes the test-loop hardware SBL-30 (Sandia Brayton Loop-30kWe). Also presented are results of early testing and modeling of the unit. The SBL-30 hardware is currently configured with a heater that is limited to 80 kWth with a maximum outlet temperature of {approx}1000 K.

Wright, Steven A.; Lipinski, Ronald J.; Brown, Nicholas [Sandia National Laboratories, Org 6872 MS-1146, PO Box 5800 Albuquerque, New Mexico 87185 (United States); Fuller, Robert; Nichols, Kenneth [Barber Nichols 6325 W 55th Ave., Arvada, Colorado 80002 (United States)

2005-02-06T23:59:59.000Z

403

Multiphase CFD-based models for chemical looping combustion process: Fuel reactor modeling  

SciTech Connect (OSTI)

Chemical looping combustion (CLC) is a flameless two-step fuel combustion that produces a pure CO2 stream, ready for compression and sequestration. The process is composed of two interconnected fluidized bed reactors. The air reactor which is a conventional circulating fluidized bed and the fuel reactor which is a bubbling fluidized bed. The basic principle is to avoid the direct contact of air and fuel during the combustion by introducing a highly-reactive metal particle, referred to as oxygen carrier, to transport oxygen from the air to the fuel. In the process, the products from combustion are kept separated from the rest of the flue gases namely nitrogen and excess oxygen. This process eliminates the energy intensive step to separate the CO2 from nitrogen-rich flue gas that reduce the thermal efficiency. Fundamental knowledge of multiphase reactive fluid dynamic behavior of the gassolid flow is essential for the optimization and operation of a chemical looping combustor. Our recent thorough literature review shows that multiphase CFD-based models have not been adapted to chemical looping combustion processes in the open literature. In this study, we have developed the reaction kinetics model of the fuel reactor and implemented the kinetic model into a multiphase hydrodynamic model, MFIX, developed earlier at the National Energy Technology Laboratory. Simulated fuel reactor flows revealed high weight fraction of unburned methane fuel in the flue gas along with CO2 and H2O. This behavior implies high fuel loss at the exit of the reactor and indicates the necessity to increase the residence time, say by decreasing the fuel flow rate, or to recirculate the unburned methane after condensing and removing CO2.

Jung, Jonghwun (ANL); Gamwo, I.K.

2008-04-21T23:59:59.000Z

404

Use of coal as fuel for chemical-looping combustion with Ni-based oxygen carrier  

SciTech Connect (OSTI)

Chemical-looping combustion is an indirect combustion technology with inherent separation of the greenhouse gas CO{sub 2}. The feasibility of using NiO as an oxygen carrier during chemical-looping combustion of coal has been investigated experimentally at 800-960{degree}C in the present work. The experiments were carried out in a fluidized bed, where the steam acted as the gasification-fluidization medium. Coal gasification and the reaction of oxygen carrier with the water gas take place simultaneously in the reactor. The oxygen carrier particles exhibit high reactivity above 900{degree}C, and the dry basis concentration of CO{sub 2} in the exit gas of the reactor is nearly 95%. The flue gas composition as a function of the reactor temperature and cyclic reduction number is discussed. At 800-960{degree}C, the dry basis concentration of CO{sub 2} in the flue gas presents a monotonously increasing trend, whereas the dry basis concentration of CO, H{sub 2}, and CH{sub 4} decreases monotonously. The concentrations of CO{sub 2}, CO, H{sub 2}, and CH{sub 4} in the flue gas as a function of cyclic reduction number present a para-curve characteristic at 900{degree}C. With the increase of cyclic reduction number, the dry basis concentration of CO{sub 2} decreases remarkably, while the dry basis concentrations of CO, H{sub 2}, and CH{sub 4} increase rapidly. Moreover, the peak value of H{sub 2} concentration is less than that of CO. The performance of the NiO-based oxygen carriers was also evaluated using an X-ray diffractometer and a scanning electron microscope to characterize the solid residues of oxygen carrier. The results indicate that NiO is one of the suitable oxygen carriers for chemical-looping combustion of coal.

Gao, Z.P.; Shen, L.H.; Xiao, J.; Qing, C.J.; Song, Q.L. [Southeast University, Nanjing (China). Thermoenergy Engineering Research Institute

2008-12-15T23:59:59.000Z

405

Manufacturing Science and Technology: Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Meso-Machining Meso-Machining PDF format (182 kb) Sandia's Micro-Electro Discharge Machine (Micro-EDM) (above). On the upper right inset is the Micro-EDM electode in copper that was made with the LIGA (electroforming) process. On the lower right inset is a screen fabricated into .006 inch kovar sheet using the Micro-EDM electrode. The walls of the screen are .002 inch wide by .006 inch deep. Meso-machining technologies being developed at Sandia National Laboratories will help manufacturers improve a variety of production processes, tools, and components. Meso-machining will benefit the aerospace, automotive, biomedical, and defense industries by creating feature sizes from the 1 to 50 micron range. Sandia's Manufacturing Science and Technology Center is developing the

406

Manufacturing Science and Technology: Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LTCC multi-chip module LTCC multi-chip module A high density LTCC multi-chip module Electronic Packaging PDF format (150 kb) The Electronic Packaging technologies in the Thin Film, Vacuum, & Packaging Department are a resource for all aspects of microelectronic packaging. From design and layout to fabrication of prototype samples, the staff offers partners the opportunity for concurrent engineering and development of a variety of electronic packaging concepts. This includes assistance in selecting the most appropriate technology for manufacturing, analysis of performance characteristics and development of new and unique processes. Capabilities: Network Fabrication Low Temperature Co-Fired Ceramic (LTCC) Thick Film Thin Film Packaging and Assembly Chip Level Packaging MEMs Packaging

407

Investigation of gasification chemical looping combustion combined cycle performance  

SciTech Connect (OSTI)

A novel combined cycle based on coal gasification and chemical looping combustion (CLC) offers a possibility of both high net power efficiency and separation of the greenhouse gas CO{sub 2}. The technique involves the use of a metal oxide as an oxygen carrier, which transfers oxygen from the combustion air to the fuel, and the avoidance of direct contact between fuel and combustion air. The fuel gas is oxidized by an oxygen carrier, an oxygen-containing compound, in the fuel reactor. The oxygen carrier in this study is NiO. The reduced oxygen carrier, Ni, in the fuel reactor is regenerated by the air in the air reactor. In this way, fuel and air are never mixed, and the fuel oxidation products CO{sub 2} and water vapor leave the system undiluted by air. All that is needed to get an almost pure CO{sub 2} product is to condense the water vapor and to remove the liquid water. When the technique is combined with gas turbine and heat recovery steam generation technology, a new type of combined cycle is formed which gives a possibility of obtaining high net power efficiency and CO{sub 2} separation. The performance of the combined cycle is simulated using the ASPEN software tool in this paper. The influence of the water/coal ratio on the gasification and the influence of the CLC process parameters such as the air reactor temperature, the turbine inlet supplementary firing, and the pressure ratio of the compressor on the system performance are discussed. Results show that, assuming an air reactor temperature of 1200{sup o}C, a gasification temperature of 1100 {sup o}C, and a turbine inlet temperature after supplementary firing of 1350{sup o}C, the system has the potential to achieve a thermal efficiency of 44.4% (low heating value), and the CO{sub 2} emission is 70.1 g/(kW h), 90.1% of the CO{sub 2} captured. 22 refs., 7 figs., 6 tabs.

Wenguo Xiang; Sha Wang; Tengteng Di [Southeast University, Nanjing (China). Key Laboratory of Clean Coal Power Generation and Combustion Technology of the Ministry of Education

2008-03-15T23:59:59.000Z

408

Advances in energy-transfer technology  

SciTech Connect (OSTI)

This paper discusses the technology of drying and curing inks, coatings and adhesives which is changing rapidly as converters and manufacturers strive to comply with regulations governing airborne emissions as well as discharge of liquid and solid wastes. Compliance with these regulations will become more difficult in the coming decade as the Clean Air Act's increasingly stringent limitations on emissions of volatile organic compounds are implemented to support the intentions of the Montreal protocol. Many of the customary solvents are being eliminated, and the volume of production for many others will be severely reduced. For some companies, the switch to the new materials means updating or replacing antiquated hot-air drying systems with high-velocity impingement ovens with higher temperature capabilities. Probably the least-expansive alternative to replacing the entire oven is to retrofit the installation with infrared (IR) energy in the form of separate predryers or postheaters or, in some cases, to install auxiliary IR heaters between the hot-air nozzles within the oven.

Terpstra, L. (Glenro, Inc., Paterson, NJ (US))

1992-06-01T23:59:59.000Z

409

Profiles of heating in turbulent coronal magnetic loops  

E-Print Network [OSTI]

Context: The location of coronal heating in magnetic loops has been the subject of a long-lasting controversy: does it occur mostly at the loop footpoints, at the top, is it random, or is the average profile uniform? Aims: We try to address this question in model loops with MHD turbulence and a profile of density and/or magnetic field along the loop. Methods: We use the ShellAtm MHD turbulent heating model described in Buchlin & Velli (2006), with a static mass density stratification obtained by the HydRad model (Bradshaw & Mason 2003). This assumes the absence of any flow or heat conduction subsequent to the dynamic heating. Results: The average profile of heating is quasi-uniform, unless there is an expansion of the flux tube (non-uniform axial magnetic field) or the variation of the kinetic and magnetic diffusion coefficients with temperature is taken into account: in the first case the heating is enhanced at footpoints, whereas in the second case it is enhanced where the dominant diffusion coefficient is enhanced. Conclusions: These simulations shed light on the consequences on heating profiles of the complex interactions between physical effects involved in a non-uniform turbulent coronal loop.

E. Buchlin; P. J. Cargill; S. J. Bradshaw; M. Velli

2007-02-28T23:59:59.000Z

410

The role of radiative reabsorption on the electron energy distribution functions in H{sub 2}/He plasma expansion through a tapered nozzle  

SciTech Connect (OSTI)

A collisional-radiative model for the H{sub 2}/He plasma, coupled to a Boltzmann solver for the free electron kinetics is used to investigate the non-equilibrium conditions created in the expansion of an high-temperature plasma flow through a converging-diverging nozzle, starting from the steady state composition at T{sub 0}=10?000?K and p{sub 0}=1?atm in the reservoir. It is shown that the plasma optical thickness plays a major role on the evolution of macroscopic quantities and internal distributions along the nozzle axis. Structured electron energy distribution functions, characterized by long plateaux and humps, are created due to superelastic collisions of cold electrons and electronically excited atomic hydrogen. The magnitudes of the plateaux are orders of magnitude higher in an optically thick plasma compared with a thin plasma, while the electron-electron collisions play a role in smoothing the peaks created by superelastic collisions between cold electrons and H(n>2)

D'Ammando, Giuliano, E-mail: g.dammando@chimica.uniba.it; Capitelli, Mario, E-mail: mario.capitelli@ba.imip.cnr.it [Dipartimento di Chimica, Universit di Bari, Via Orabona 4, 70125 Bari (Italy); CNR-IMIP, Via Amendola 122/D, 70126 Bari (Italy); Esposito, Fabrizio, E-mail: fabrizio.esposito@ba.imip.cnr.it; Laricchiuta, Annarita, E-mail: annarita.laricchiuta@ba.imip.cnr.it; Pietanza, Lucia D., E-mail: daniela.pietanza@ba.imip.cnr.it; Colonna, Gianpiero, E-mail: gianpiero.colonna@ba.imip.cnr.it [CNR-IMIP, Via Amendola 122/D, 70126 Bari (Italy)

2014-09-15T23:59:59.000Z

411

TECHNOLOGY LICENSE APPLICATION Office of Technology Transfer  

E-Print Network [OSTI]

Page 1 TECHNOLOGY LICENSE APPLICATION Office of Technology Transfer UT-Battelle, LLC (UT. One of the functions of UT-BATTELLE's Office of Technology Transfer is to negotiate license agreements

Pennycook, Steve

412

Integrating desulfurization with CO{sub 2}-capture in chemical-looping combustion  

SciTech Connect (OSTI)

Chemical looping combustion (CLC) is an emerging technology for clean combustion. We have previously demonstrated that the embedding of metal nanoparticles into a nanostructured ceramic matrix can result in unusually active and sinter-resistant nanocomposite oxygen carrier materials for CLC which maintain high reactivity and high-temperature stability even when sulfur contaminated fuels are used in CLC. Here, we propose a novel process scheme for in situ desulfurization of syngas with simultaneous CO{sub 2}-capture in chemical looping combustion by using these robust nanocomposite oxygen carriers simultaneously as sulfur-capture materials. We found that a nanocomposite Cu-BHA carrier can indeed strongly reduce the H{sub 2}S concentration in the fuel reactor effluent. However, during the process the support matrix is also sulfidized and takes part in the redox process of CLC. This results in SO{sub 2} production during the reduction of the oxygen carrier and thus limits the degree of desulfurization attainable with this kind of carrier. Nevertheless, the results suggest that simultaneous desulfurization and CO{sub 2} capture in CLC is feasible with Cu as oxygen carrier as long as appropriate carrier support materials are chosen, and could result in a novel, strongly intensified process for low-emission, high efficiency combustion of sulfur contaminated fuel streams.

Solunke, Rahul; Veser, Goetz

2011-02-01T23:59:59.000Z

413

Power Generating Stationary Engines Nox Control: A Closed Loop Control Technology  

Broader source: Energy.gov [DOE]

Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010.

414

Hydrogen Technologies Group  

SciTech Connect (OSTI)

The Hydrogen Technologies Group at the National Renewable Energy Laboratory advances the Hydrogen Technologies and Systems Center's mission by researching a variety of hydrogen technologies.

Not Available

2008-03-01T23:59:59.000Z

415

Information Technology and Libraries  

E-Print Network [OSTI]

Sue Chesley Perry 196 INFORMATION TECHNOLOGY AND LIBRARIES |LITA - Library & Information Technology Association). Two of the 190 INFORMATION TECHNOLOGY AND LIBRARIES |

Hubble, Ann; Murphy, Deborah A.; Perry, Susan Chesley

2011-01-01T23:59:59.000Z

416

Technology Transfer: Success Stories: Licensed Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Licensed Technologies Licensed Technologies Here are some of our licensees and the technologies they are commercializing; see our Start-Up Company page for more of our technology licenses. Company (Licensee) Technology Life Technologies Corp. Cell lines for breast cancer research Bristol Myers Squibb; Novartis; Plexxikon Inc.; Wyeth Research; GlaxoSmithKline; Johnson & Johnson; Boehringer Ingelheim Pharmaceuticals, Inc.; Genzyme Software for automated macromolecular crystallography Shell International Exploration and Production; ConnocoPhillips Company; StatOil ASA; Schlumburger Technology Corportation; BHP Billiton Ltd.; Chevron Energy Technology Company; EniTecnologie S.p.A. Geo-Hydrophysical modeling software Microsoft Home Energy Saver software distribution Kalinex Colorimetric bioassay

417

Vehicle Technologies Office: 2008 Advanced Vehicle Technology...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

8 Advanced Vehicle Technology Analysis and Evaluation Activities and Heavy Vehicle Systems Optimization Program Annual Progress Report Vehicle Technologies Office: 2008 Advanced...

418

Vehicle Technologies Office: 2009 Advanced Vehicle Technology...  

Office of Environmental Management (EM)

Vehicle Technologies Office: 2009 Advanced Vehicle Technology Analysis and Evaluation Activities and Heavy Vehicle Systems Optimization Program Annual Progress Report Vehicle...

419

Belgium east loop active network management (Smart Grid Project) | Open  

Open Energy Info (EERE)

Belgium east loop active network management (Smart Grid Project) Belgium east loop active network management (Smart Grid Project) Jump to: navigation, search Project Name Belgium east loop active network management Country Belgium Coordinates 50.148746°, 4.086914° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":50.148746,"lon":4.086914,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

420

Energy Savings Calculator for Commercial Boilers: Closed Loop, Space  

Broader source: Energy.gov (indexed) [DOE]

Savings Calculator for Commercial Boilers: Closed Loop, Savings Calculator for Commercial Boilers: Closed Loop, Space Heating Applications Only Energy Savings Calculator for Commercial Boilers: Closed Loop, Space Heating Applications Only October 8, 2013 - 2:23pm Addthis This cost calculator is a screening tool that estimates a product's lifetime energy cost savings at various efficiency levels. Learn more about the base model and other assumptions. Project Type Is this a new installation or a replacement? New Replacement What is the deliverable fluid type? Water Steam What fuel is used? Gas Oil How many boilers will you purchase? unit(s) Performance Factors Existing What is the capacity of the existing boiler? MBtu/hr* What is the thermal efficiency of the existing boiler? % Et New What is the capacity of the new boiler?

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Loop-induced Neutrino Masses: A Case Study  

E-Print Network [OSTI]

We study the cocktail model in which the Majorana neutrino masses are generated by the so-called "cocktail" three-loop diagrams with the dark matter particle running in the loops. In particular, we give the correct analytic expressions of the neutrino masses in the model by the detailed calculation of the cocktail diagrams. Based on the reliable numerical calculation of the loop integrals, we explore the parameter space which can give the correct orders of neutrino masses while satisfying other experimental constraints, such as those from the neutrinoless double beta decay, low-energy lepton flavor violation processes, electroweak precision tests, and collider searches. As a result, the large couplings and the large mass difference between the two singly-charged (neutral) scalars are required.

Geng, Chao-Qiang; Tsai, Lu-Hsing

2014-01-01T23:59:59.000Z

422

Automated One-Loop Calculations with GoSam  

E-Print Network [OSTI]

We present the program package GoSam which is designed for the automated calculation of one-loop amplitudes for multi-particle processes in renormalisable quantum field theories. The amplitudes, which are generated in terms of Feynman diagrams, can be reduced using either D-dimensional integrand-level decomposition or tensor reduction. GoSam can be used to calculate one-loop QCD and/or electroweak corrections to Standard Model processes and offers the flexibility to link model files for theories Beyond the Standard Model. A standard interface to programs calculating real radiation is also implemented. We demonstrate the flexibility of the program by presenting examples of processes with up to six external legs attached to the loop.

Gavin Cullen; Nicolas Greiner; Gudrun Heinrich; Gionata Luisoni; Pierpaolo Mastrolia; Giovanni Ossola; Thomas Reiter; Francesco Tramontano

2011-11-08T23:59:59.000Z

423

Heat Integration of the Water-Gas Shift Reaction System for Carbon Sequestration Ready IGCC Process with Chemical Looping  

SciTech Connect (OSTI)

Integrated gasification combined cycle (IGCC) technology has been considered as an important alternative for efficient power systems that can reduce fuel consumption and CO2 emissions. One of the technological schemes combines water-gas shift reaction and chemical-looping combustion as post gasification techniques in order to produce sequestration-ready CO2 and potentially reduce the size of the gas turbine. However, these schemes have not been energetically integrated and process synthesis techniques can be applied to obtain an optimal flowsheet. This work studies the heat exchange network synthesis (HENS) for the water-gas shift reaction train employing a set of alternative designs provided by Aspen energy analyzer (AEA) and combined in a process superstructure that was simulated in Aspen Plus (AP). This approach allows a rigorous evaluation of the alternative designs and their combinations avoiding all the AEA simplifications (linearized models of heat exchangers). A CAPE-OPEN compliant capability which makes use of a MINLP algorithm for sequential modular simulators was employed to obtain a heat exchange network that provided a cost of energy that was 27% lower than the base case. Highly influential parameters for the pos gasification technologies (i.e. CO/steam ratio, gasifier temperature and pressure) were calculated to obtain the minimum cost of energy while chemical looping parameters (oxidation and reduction temperature) were ensured to be satisfied.

Juan M. Salazara; Stephen E. Zitney; Urmila M. Diwekara

2010-01-01T23:59:59.000Z

424

Sodium Loop Safety Facility W-2 experiment fuel pin rupture detection system. [LMFBR  

SciTech Connect (OSTI)

The objective of the Sodium Loop Safety Facility (SLSF) W-2 experiment is to characterize the combined effects of a preconditioned full-length fuel column and slow transient overpower (TOP) conditions on breeder reactor (BR) fuel pin cladding failures. The W-2 experiment will meet this objective by providing data in two technological areas: (1) time and location of cladding failure, and (2) early post-failure test fuel behavior. The test involves a seven pin, prototypic full-length fast test reactor (FTR) fuel pin bundle which will be subjected to a simulated unprotected 5 cents/s reactivity transient overpower event. The outer six pins will provide the necessary prototypic thermal-hydraulic environment for the center pin.

Hoffman, M.A.; Kirchner, T.L.; Meyers, S.C.

1980-05-01T23:59:59.000Z

425

THERMAL STRUCTURE OF CORONAL LOOPS AS SEEN WITH NORIKURA CORONAGRAPH  

SciTech Connect (OSTI)

The thermal structure of a coronal loop, both along and across the loop, is vital in determining the exact plasma heating mechanism. High-resolution spectroscopic observations of the off-limb corona were made using the 25 cm Norikura coronagraph, located at Norikura, Japan. Observations on a number of days were made simultaneously in four forbidden iron emission lines, namely, the [Fe XI] 7892 A line, the [Fe XIII] 10747 A and 10798 A lines, and the [Fe XIV] 5303 A line and on some days made only in the [Fe XI] 7892 A and [Fe X] 6374 A lines. Using temperature sensitive emission line ratios [Fe XIV] 5303 A/[Fe XIII] 10747 A and [Fe XI] 7892 A/[Fe X] 6374 A, we compute the electron temperatures along 18 different loop structures observed on different days. We find a significant negative temperature gradient in all of the structures observed in Fe XIV and Fe XIII and a positive temperature gradient in the structures observed in Fe XI and Fe X. Combining these results with the previous investigations by Singh and his collaborators, we infer that the loop tops, in general, appear hotter when observed in colder lines and colder when observed in relatively hotter lines as compared to their coronal foot points. We suggest that this contrasting trend observed in the temperature variation along the loop structures can be explained by a gradual interaction of different temperature plasma. The exact mechanism responsible for this interaction must be investigated further and has the potential to constrain loop heating models.

Prasad, S. Krishna; Singh, Jagdev [Indian Institute of Astrophysics, II Block, Koramangala, Bangalore 560 034 (India); Ichimoto, K., E-mail: krishna@iiap.res.in [Kwasan and Hida Observatories, Kyoto University, Yamashina-ku, Kyoto 607-8417 (Japan)

2013-03-10T23:59:59.000Z

426

Manufacturing Science and Technology: Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Thin Films Thin Films PDF format (189 kb) Multi Layer Thin Films Multi Layer Thin Films Planetary Sputtering SystemsPlanetary Sputtering Systems Planetary Sputtering Systems The Thin Film laboratory within Manufacturing Science & Technology provides a variety of vapor deposition processes and facilities for cooperative research and development. Available capabilities include electron beam evaporation, sputter deposition, reactive deposition processes, atomic layer deposition (ALD) and specialized techniques such as focused ion beam induced chemical vapor deposition. Equipment can be reconfigured for prototyping or it can be dedicated to long-term research, development and manufacturing. Most sputter and evaporative deposition systems are capable of depositing multiple materials.

427

Manufacturing Science and Technology: Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Molding, Thermoforming & Compounding Molding, Thermoforming & Compounding PDF format (89 kb) The Manufacturing Science & Technology Center helps customers choose the best materials and techniques for their product by providing a variety of conformal coatings, thermoforming, and compounding materials using established or custom designed processes. The department provides consulting services for injection molding and rubber compounding projects. Capabilities: Thermoforming: Processing thermoplastics such as polycarbonate, polymethyl methacrylate, polypropylene polystyrene, and ABS; producing holding trays, protective caps, and custom covers Injection Molding Consultation: Designing your part to be injection molded, helping you choose the best material for your application, and supporting your interface with injection molding companies

428

Loop calculus in statistical physics and information science  

Science Journals Connector (OSTI)

Considering a discrete and finite statistical model of a general position we introduce an exact expression for the partition function in terms of a finite series. The leading term in the series is the Bethe-Peierls (belief propagation) (BP) contribution; the rest are expressed as loop contributions on the factor graph and calculated directly using the BP solution. The series unveils a small parameter that often makes the BP approximation so successful. Applications of the loop calculus in statistical physics and information science are discussed.

Michael Chertkov and Vladimir Y. Chernyak

2006-06-01T23:59:59.000Z

429

Automated one-loop calculations with GoSam  

E-Print Network [OSTI]

In this talk, the program package GOSAM is presented, which can be used for the automated calculation of one-loop amplitudes for multi-particle processes. The integrands are generated in terms of Feynman diagrams and can be reduced by d-dimensional integrand-level decomposition, or tensor reduction, or a combination of both. Through various examples we show that GOSAM can produce one-loop amplitudes for both QCD and electroweak theory; model files for theories Beyond the Standard Model can be linked as well.

G. Cullen; N. Greiner; G. Heinrich; G. Luisoni; P. Mastrolia; G. Ossola; T. Reiter; F. Tramontano

2012-01-13T23:59:59.000Z

430

Investigation of Gasification Chemical Looping Combustion Combined Cycle Performance  

Science Journals Connector (OSTI)

Combining CLC with a gas turbine combined cycle offers a novel power generation technique with high efficiency and CO2 separation. ... Here, we have developed looping materials based on the integration of NiO, as solid reactants, with a composite metal oxide of NiAl2O4, as a binder, leading to a significant role in improving reaction rate, conversion, and regenerability in cyclic reaction in this combustor, compared with the other materials. ... Chemical looping combustion for combined cycles with CO2 capture. ...

Wenguo Xiang; Sha Wang; Tengteng Di

2008-02-19T23:59:59.000Z

431

Technology Name  

Broader source: Energy.gov (indexed) [DOE]

Development Development DE-EM0000598 D&D KM-IT For the deployment of Information Technology for D&D knowledge management Page 1 of 2 Florida International University Florida D&D Knowledge Management Information Tool Challenge Deactivation and decommissioning (D&D) work is a high priority across the DOE Complex. The D&D community associated with the various DOE sites has gained extensive knowledge and experience over the years. To prevent the D&D knowledge and expertise from being lost over time an approach is needed to capture and maintain this valuable information in a universally available and easily usable system. Technical Solution The D&D KM-IT serves as a centralized repository

432

CSIR TECHNOLOGY AWARDS -2013  

E-Print Network [OSTI]

CSIR TECHNOLOGY AWARDS - 2013 GUIDELINES & PROFORMAE FOR NOMINATIONS Planning and Performance 2013 #12;CSIR TECHNOLOGY AWARDS BRIEF DETAILS ,,CSIR Technology Awards were instituted in 1990 to encourage multi-disciplinary in- house team efforts and external interaction for technology development

Jayaram, Bhyravabotla

433

Lab Visits on DOE Technology Roadmap and the Technology Advisory...  

Office of Environmental Management (EM)

DOE Technology Roadmap and the Technology Advisory Board OCIO Technology Summit: High Performance Computing Lab Visits on DOE Technology Roadmap and the Technology Advisory Board...

434

INL Technology Transfer  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Technology Transfer Through collaboration with industry partners, INL's Technology Deployment office makes available to American agencies and international organizations unique...

435

Energy Technology Solutions  

Broader source: Energy.gov [DOE]

Public-private partnerships transforming industry and list of commercialized technologies, knowledge-based results, and promising technologies

436

California Institute of Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

California Institute of Technology o Ivan Celanovic, Principal Research Scientist, Massachusetts Institute of Technology o Geoffrey Kinsey, Director, Photovoltaic...

437

Technology Validation Fact Sheet  

Broader source: Energy.gov [DOE]

Fact sheet produced by the Fuel Cell Technologies Office describing hydrogen and fuel cell technology validation efforts.

438

PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program  

E-Print Network [OSTI]

PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program publication is funded by the Division of asphalt pavements. TECHNOLOGY TRANSFER PROGRAM JULY 2010, VOL. 2, NO. 1 Warm Mix Asphalt Hits the Road, and California LTAP Field Engineer, Technology Transfer Program, Institute of Transportation Studies, UC Berkeley

California at Berkeley, University of

439

PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program  

E-Print Network [OSTI]

PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program publication is funded by the Division solve the very serious problem of waste tire disposal. TECHNOLOGY TRANSFER PROGRAM SEPTEMBER 2009, VOL, University of California Pavement Research Center, and California LTAP Field Engineer, Technology Transfer

California at Berkeley, University of

440

Venus Technology Plan Venus Technology Plan  

E-Print Network [OSTI]

Venus Technology Plan May 2014 #12; ii Venus Technology Plan At the Venus Exploration a Roadmap for Venus Exploration (RVE) that is consistent with VEXAG priorities as well as Planetary Decadal Survey priorities, and (3) develop a Technology Plan for future Venus missions (after a Technology

Rathbun, Julie A.

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Recovery Act: Novel Oxygen Carriers for Coal-fueled Chemical Looping  

SciTech Connect (OSTI)

Chemical Looping Combustion (CLC) could totally negate the necessity of pure oxygen by using oxygen carriers for purification of CO{sub 2} stream during combustion. It splits the single fuel combustion reaction into two linked reactions using oxygen carriers. The two linked reactions are the oxidation of oxygen carriers in the air reactor using air, and the reduction of oxygen carriers in the fuel reactor using fuels (i.e. coal). Generally metal/metal oxides are used as oxygen carriers and operated in a cyclic mode. Chemical looping combustion significantly improves the energy conversion efficiency, in terms of the electricity generation, because it improves the reversibility of the fuel combustion process through two linked parallel processes, compared to the conventional combustion process, which is operated far away from its thermo-equilibrium. Under the current carbon-constraint environment, it has been a promising carbon capture technology in terms of fuel combustion for power generation. Its disadvantage is that it is less mature in terms of technological commercialization. In this DOE-funded project, accomplishment is made by developing a series of advanced copper-based oxygen carriers, with properties of the higher oxygen-transfer capability, a favorable thermodynamics to generate high purity of CO{sub 2}, the higher reactivity, the attrition-resistance, the thermal stability in red-ox cycles and the achievement of the auto-thermal heat balance. This will be achieved into three phases in three consecutive years. The selected oxygen carriers with final-determined formula were tested in a scaled-up 10kW coal-fueled chemical looping combustion facility. This scaled-up evaluation tests (2-day, 8-hour per day) indicated that, there was no tendency of agglomeration of copper-based oxygen carriers. Only trace-amount of coke or carbon deposits on the copper-based oxygen carriers in the fuel reactor. There was also no evidence to show the sulphidization of oxygen carriers in the system by using the high-sulfur-laden asphalt fuels. In all, the scaled-up test in 10 kW CLC facility demonstrated that the preparation method of copper-based oxygen carrier not only help to maintain its good reactivity, also largely minimize its agglomeration tendency.

Pan, Wei-Ping; Cao, Yan

2012-11-30T23:59:59.000Z

442

LOCA with consequential or delayed LOOP accidents: Unique issues, plant vulnerability, and CDF contributions  

SciTech Connect (OSTI)

A loss-of-coolant accident (LOCA) can cause a loss-of-offsite power (LOOP) wherein the LOOP is usually delayed by few seconds or longer. Such an accident is called LOCA with consequential LOOP, or LOCA with delayed LOOP (here, abbreviated as LOCA/LOOP). This paper analyzes the unique conditions that are associated with a LOCA/LOOP, presents a model, and quantifies its contribution to core damage frequency (CDF). The results show that the CDF contribution can be a dominant contributor to risk for certain plant designs, although boiling water reactors (BWRs) are less vulnerable than pressurized water reactors (PWRs).

Martinez-Guridi, G.; Samanta, P.; Chu, L.; Yang, J.

1998-08-01T23:59:59.000Z

443

NREL: Technology Transfer - Technology Partnership Agreements  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Technology Partnership Agreements Technology Partnership Agreements Through technology partnership agreements, NREL provides partners with technical support to help commercialize and deploy energy technologies and products. We do not fund any projects under a technology partnership agreement. The partner provides the necessary resources and covers our costs of providing technical services. NREL does provide funding opportunities through competitively placed contracts. For more information, see our business opportunities. Process The technology partnership agreement process basically includes 11 steps. See the NREL Technology Partnership Agreement Process flowchart. We are committed to working through these steps in a timely manner. Experience suggests that the fastest means to reach an agreement is through

444

HEMISPHERIC CENTER FOR ENVIRONMENTAL TECHNOLOGY  

SciTech Connect (OSTI)

The Online Measurement of Decontamination project team received a commitment for a demonstration in May from the Sacramento (California) Municipal Utility District (SMUD) Rancho Seco site. Since this site is a member of the DOE Commercial Utilities Consortium, the demonstration will fulfill the DOE and commercial technology demonstration requirements. Discussion on deployment of the Integrated Vertical and Overhead Decontamination (IVOD) System at Rancho Seco was conducted; date for deployment tentatively scheduled for early spring. Based upon fictional requirements from SRS for a shiny monitor in a high-level waste tank, FIU-HCET developed and delivered a draft slurry monitor design and draft test plan. Experiments measuring slurry settling time for SRS slurry simulant at 10 wt% have been completed on FIU-HCET'S flow loop with SRS dip. The completed design package of the test mockup for evaluating Non-Intrusive Location of Buried Items Technologies was sent to Fluor Fernald and the Operating Engineers National Hazmat Program for review. Comments are due at the end of January. Preliminary experiments to determine size distribution of aerosols generated during metal cutting were performed. A 1/4-inch-thick iron plate was cut using a plasma arc torch, and the size distribution of airborne particles was measured using a multistage impactor. Per request of DOE-Ohio, FIU-HCET participated in a weeklong value engineering study for the characterization, decontamination, and dismantlement of their critical path facility.

M.A. Ebadian

2000-01-31T23:59:59.000Z

445

NETL: 2011 Conference Proceedings - 2011 NETL CO2 Capture Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2011 NETL CO2 Capture Technology Meeting 2011 NETL CO2 Capture Technology Meeting August 22 - 26, 2011 Previous Proceedings 2009: Annual NETL CO2 Capture Technology for Existing Plants R&D Meeting 2010: 2010 NETL CO2 Capture Technology Meeting Proceedings of the 2011 NETL CO2 Capture Technology Meeting Table of Contents Presentations Monday, August 22 Opening/Overview Post-combustion Sorbent-Based Capture Post-combustion Membrane-Based Capture Tuesday, August 23 Post-combustion Solvent-Based Capture ARPA-E Capture Projects Wednesday, August 24 Oxy-Combustion and Oxygen Production Chemical Looping Process CO2 Compression Thursday, August 25 FutureGen 2.0, CCPI and ICCS Demonstration Projects System Studies and Modeling Pre-Combustion Capture Projects Friday, August 26 Pre-combustion Capture Projects Posters

446

NREL: Hydrogen and Fuel Cells Research - Fuel Cell and Hydrogen Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Fuel Cell and Hydrogen Technology Validation Fuel Cell and Hydrogen Technology Validation Previous Next Pause/Resume Animated Map Correlates Fuel Cell Usage for Backup Power with Grid Outages Snapshot graphic of a U.S. map that shows the location and operational status of backup power fuel cells systems as well as the location of grid outages. Learn how NREL developed the time-lapse geographical visualization map or view the animation, which covers January 2010 to August 2013. Learning Demonstration Validates Hydrogen Fuel Cell Vehicles and Infrastructure in a Real-World Setting Two icons depict a fuel cell car (left) and hydrogen infrastructure (right). The cars icon is a drawing of a car with a water droplet at the gas tank. The infrastructure icon is a drawing of a hydrogen fueling nozzle. NREL analyzed seven years of real-world validation data, validated key DOE

447

New and Underutilized Technology: Commercial Ground Source Heat Pumps |  

Broader source: Energy.gov (indexed) [DOE]

Commercial Ground Source Heat Commercial Ground Source Heat Pumps New and Underutilized Technology: Commercial Ground Source Heat Pumps October 8, 2013 - 2:59pm Addthis The following information outlines key deployment considerations for commercial ground source heat pumps within the Federal sector. Benefits Commercial ground source heat pumps are ground source heat pump with loops that feed multiple packaged heat pumps and a single ground source water loop. Unit capacity is typically 1-10 tons and may be utilized in an array of multiple units to serve a large load. Application Condensing boilers are appropriate for housing, service, office, and research and development applications. Key Factors for Deployment FEMP has made great progress with commercial ground source heat pump technology deployment within the Federal sector. Primary barriers deal with

448

Gas Foil Bearing Technology Advancements for Closed Brayton Cycle Turbines  

Science Journals Connector (OSTI)

Closed Brayton Cycle (CBC) turbine systems are under consideration for future space electric power generation. CBC turbines convert thermal energy from a nuclear reactor or other heat source to electrical power using a closed?loop cycle. The operating fluid in the closed?loop is commonly a high pressure inert gas mixture that cannot tolerate contamination. One source of potential contamination in a system such as this is the lubricant used in the turbomachine bearings. Gas Foil Bearings (GFB) represent a bearing technology that eliminates the possibility of contamination by using the working fluid as the lubricant. Thus foil bearings are well suited to application in space power CBC turbine systems. NASA Glenn Research Center is actively researching GFB technology for use in these CBC power turbines. A power loss model has been developed and the effects of very high ambient pressure start?up torque and misalignment have been observed and are reported here.

Samuel A. Howard; Robert J. Bruckner; Christopher DellaCorte; Kevin C. Radil

2007-01-01T23:59:59.000Z

449

Manufacturing Science and Technology: Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sol-Gel Glasses Sol-Gel Glasses PDF format (74 kb) Sol Gel Sol Gel Coating with Sol-Gel Glasses Coating with Sol-Gel Glasses The Manufacturing Science & Technology Center conducts process development and scale-up of ceramic and glass materials prepared by the sol-gel process. Sol-gel processing uses solutions prepared at low temperature rather than high temperature powder processing to make materials with controlled properties. A precursor sol-gel solution (sol) is either poured into a mold and allowed to gel or is diluted and applied to a substrate by spinning, dipping, spraying, electrophoresis, inkjet printing or roll coating. Controlled drying of the wet gel results in either a ceramic or glass bulk part or a thin film on a glass, plastic, ceramic or metal substrate.

450

Manufacturing Science and Technology: Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ion Beam Manufacture Ion Beam Manufacture PDF format (113 kb) Example sine wave FIB sputtered into initially planar Si substrate Example sine wave FIB sputtered into initially planar Si substrate Sandia Manufacturing Science & Technology's Focused Ion Beam (FIB) laboratory provides an opportunity for research, development and prototyping. Currently, our scientists are developing methods for ion beam sculpting microscale tools, components and devices. This includes shaping of specialty tools such as end-mills, turning tools and indenters. Many of these have been used in ultra-precision machining DOE applications. Additionally, staff are developing the capability to ion mill geometrically-complex features and substrates. This includes the ability to sputter predetermined curved shapes of various symmetries and

451

Manufacturing Science and Technology: Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

3 foot diameter cyanate ester / fiberglass laminated antenna 3 foot diameter cyanate ester / fiberglass laminated antenna 3 foot diameter cyanate ester / fiberglass laminated antenna Composites PDF format (145 kb) Polymer composite materials are composed of fibers in an organic matrix and can be useful in applications that require a high strength-to-weight ratio. Sandia's MS&T staff will work with you from part design, through mold and tooling design, and on through fabrication. The department is capable of fabricating small and large complex parts and will help you choose the most economical technique for your composite needs. Capabilities: The Center has a comprehensive program on the mechanical engineering design, tooling and fixturing, lay-out, complete processing of the composite structure, and technology transfer of composite structures for a

452

Manufacturing Science and Technology: Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Laser Engineered Net Shaping(tm) Laser Engineered Net Shaping(tm) PDF format (140 kb) picture of processing blade Processing Blade Sandia National Laboratories has developed a new technology to fabricate three-dimensional metallic components directly from CAD solid models. This process, called Laser Engineered Net ShapingT (LENS®), exhibits enormous potential to revolutionize the way in which metal parts, such as complex prototypes, tooling, and small-lot production items, are produced. The process fabricates metal parts directly from the Computer Aided Design (CAD) solid models using a metal powder injected into a molten pool created by a focused, high-powered laser beam. Simultaneously, the substrate on which the deposition is occurring is scanned under the beam/powder interaction zone to fabricate the desired

453

Magnetic phase diagram of small superconducting two-loop networks  

E-Print Network [OSTI]

The critical magnetic behaviour of simple superconducting micro-networks is illustrat- ed by discussing several properties of super- conducting micro-networks [1-3], see also [4]. This theoretical activity has beenL-277 Magnetic phase diagram of small superconducting two-loop networks J. Riess Centre de

Paris-Sud XI, Université de

454

Intersections of loops and the AndersenMattesReshetikhin algebra  

Science Journals Connector (OSTI)

......that and have the same base point and such that lifts to a straight line r2...homotopic as arcs with fixed end points. Now one considers four possible cases of signs...the 8-gon enumerate the four intersection points between the loops b1 and......

Patricia Cahn; Vladimir Chernov

2013-06-01T23:59:59.000Z

455

Two-loop pinch technique in the electroweak sector  

Science Journals Connector (OSTI)

The generalization of the two-loop pinch technique to the electroweak sector of the standard model is presented. We restrict ourselves to the case of conserved external currents, and provide a detailed analysis of both the charged and neutral sectors. The crucial ingredient for this construction is the identification of the parts discarded during the pinching procedure with well-defined contributions to the Slavnov-Taylor identity satisfied by the off-shell one-loop gauge-boson vertices; the latter are nested inside the conventional two-loop self-energies. It is shown by resorting to a set of powerful identities that the two-loop effective pinch technique self-energies coincide with the corresponding ones computed in the background Feynman gauge. The aforementioned identities are derived in the context of the Batalin-Vilkovisky formalism, a fact which enables the individual treatment of the self-energies of the photon and the Z boson. Some possible phenomenological applications are briefly discussed.

Daniele Binosi and Joannis Papavassiliou

2002-10-29T23:59:59.000Z

456

STRING LOOPS IN BACKGROUND FIELDS Scott Alan Yost  

E-Print Network [OSTI]

excellent collaborators. They have made my stay at Princeton very productive and enjoyable. I thank E. LiebSTRING LOOPS IN BACKGROUND FIELDS Scott Alan Yost A dissertation presented to the faculty formalism. ii #12;Acknowledgements I would like to thank my advisor, Chiara Nappi, for her support, advice

Yost, Scott

457

A Knowledge Management Support Environment based on Dual Loop Model  

E-Print Network [OSTI]

A Knowledge Management Support Environment based on Dual Loop Model Mitsuru Ikeda, Yusuke Hayashi individuals and organizations be properly understood and support learning for knowledge inheritance, and encourage the creation, the spreading and inheriting of new knowledge. This paper presents an framework

Mizoguchi, Riichiro

458

Molecular Loops in the Galactic Center: Evidence for Magnetic Flotation  

Science Journals Connector (OSTI)

...Fig. 2. Velocity-galactic longitude diagram toward loops 1 and 2 in J = 1 to 0 12 CO 2.6-mm (color...like a circle in the position-velocity diagram instead of the linear features we...Nondimensional magneto-hydrodynamic (MHD) equations are solved numerically with...

Yasuo Fukui; Hiroaki Yamamoto; Motosuji Fujishita; Natsuko Kudo; Kazufumi Torii; Satoshi Nozawa; Kunio Takahashi; Ryoji Matsumoto; Mami Machida; Akiko Kawamura; Yoshinori Yonekura; Norikazu Mizuno; Toshikazu Onishi; Akira Mizuno

2006-10-06T23:59:59.000Z

459

Convenient Fitness Routes for the SU Community North Campus Loop  

E-Print Network [OSTI]

the Archbold-Flanagan entrance, take Sims Drive to Euclid Ave. to the Lancaster Ave. or Westcott St. intersections and back. Distances: 1.18 miles to Lancaster and back; 1.80 miles to Westcott St. and back. to Barry Park, loop Barry Park (using Meadowbrook Dr., Broad St., and Westcott St.) and then head back

Mather, Patrick T.

460

On Achieving Balanced Power Consumption in Software Pipelined Loops #  

E-Print Network [OSTI]

. The benchmarks are executed on the Wattch power simulator. In comparison to the original (powerOn Achieving Balanced Power Consumption in Software Pipelined Loops # Hongbo Yang Dept of ECE Univ@capsl.udel.edu ABSTRACT While a significant body of work in compilers has been de­ voted to reducing energy consumption

Gao, Guang R.

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

An evaluation of inductance loop detectors for speed measurement accuracy  

E-Print Network [OSTI]

. The lag time from the presence of a vehicle at an inductance loop to the actual detection of a vehicle varies. As the lag time varies so does the accuracy of speed measurement. Vehicle size, vehicle speed, detector type, detector sensitivity...

Cronin, Brian Patrick

2012-06-07T23:59:59.000Z

462

A Scheme-Based Closed-Loop Anesthesia System  

Science Journals Connector (OSTI)

Many aspects of modern medicine, including the administration of anesthetic agents during general surgery, remain unautomated and reliant on the vigilance of the attending clinicians. In other fields where failures can have catastrophic consequences, ... Keywords: Scheme, anesthesia, application programming, closed-loop control, cross-platform development, functional programming, medical systems

C. L. Petersen, M. Grges, J. M. Ansermino, G. A. Dumont

2014-08-01T23:59:59.000Z

463

A Random Loop Model for Long Polymers Manfred Bohn  

E-Print Network [OSTI]

the disorder of loops (i.e., bead-bead interactions) is equivalent to the average over an adequate ensemble organisms, as they are permanently altered by enzymes and protein complexes. We present a new polymer model a general expression for the thermal ensemble average of the squared physical distance between two arbitrary

Heermann, Dieter W.

464

Automation of Multi-leg One-loop virtual Amplitudes  

E-Print Network [OSTI]

In the last few years, much progress has been made in the computation of one-loop virtual matrix elements for processes involving many external particles. In this contribution the methods that have enabled this recent progress are briefly reviewed with a focus on their computing and automation aspects.

D. Maitre

2010-06-29T23:59:59.000Z

465

Polyakov loop, Hadron Resonance Gas Model and Thermodynamics of QCD  

E-Print Network [OSTI]

We summarize recent results on the hadron resonance gas description of QCD. In particular, we apply this approach to describe the equation of state and the vacuum expectation value of the Polyakov loop in several representations. Ambiguities related to exactly which states should be included are discussed.

E. Megias; E. Ruiz Arriola; L. L. Salcedo

2013-10-11T23:59:59.000Z

466

A new closed loop control method for HVDC transmission  

SciTech Connect (OSTI)

The paper presents a new closed loop control method which uses information locally available at each converter station and combines and coordinates control possibilities with the objective of improving the dynamic behavior during fault recoveries and disturbances around the operating points.

Karlecik-Maier, F. [Siemens AG, Erlangen (Germany)] [Siemens AG, Erlangen (Germany)

1996-10-01T23:59:59.000Z

467

Experimental Study of Chemical-Looping Reforming in a Fixed-Bed Reactor: Performance Investigation of Different Oxygen Carriers on Al2O3 and TiO2 Support  

Science Journals Connector (OSTI)

E. Karimi , H. R. Forutan , M. Saidi , M. R. Rahimpour *, and A. Shariati ... Rahimpour, M. R.; Hesami, M.; Saidi, M.; Jahanmiri, A.; Farniaei, M.; Abbasi, M.Methane steam reforming thermally coupled with fuel combustion: Application of chemical looping concept as a novel technology Energy Fuels 2013, 27 ( 4) 2351 2362 ... Rahimpour, Mohammad Reza; Hesami, Marziyeh; Saidi, Majid; Jahanmiri, Abdolhossein; Farniaei, Mahdi; Abbasi, Mohsen ...

E. Karimi; H. R. Forutan; M. Saidi; M. R. Rahimpour; A. Shariati

2014-03-26T23:59:59.000Z

468

Categorical Exclusion Determinations: National Energy Technology Laboratory  

Broader source: Energy.gov (indexed) [DOE]

3, 2011 3, 2011 CX-006156: Categorical Exclusion Determination Utility Metering Installation: B3, B14, B36 CX(s) Applied: B1.15, B2.2 Date: 07/13/2011 Location(s): Morgantown, West Virginia Office(s): Fossil Energy, National Energy Technology Laboratory July 13, 2011 CX-006155: Categorical Exclusion Determination Wisconsin Clean Transportation Program/City of Milwaukee Compressed Natural Gas Infrastructure Project CX(s) Applied: B5.1 Date: 07/13/2011 Location(s): Milwaukee, Wisconsin Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory July 13, 2011 CX-006154: Categorical Exclusion Determination Recovery State Energy Program - Renewable Energy Incentives - Spencer Residence Open Loop Heat Pump System CX(s) Applied: B5.1 Date: 07/13/2011

469

(Fuel, fission product, and graphite technology)  

SciTech Connect (OSTI)

Travel to the Forschungszentrum (KFA) -- Juelich described in this report was for the purpose of participating in the annual meeting of subprogram managers for the US/DOE Umbrella Agreement for Fuel, Fission Product, and Graphite Technology. At this meeting the highlights of the cooperative exchange were reviewed for the time period June 1989 through June 1990. The program continues to contribute technology in an effective way for both countries. Revision 15 of the Subprogram Plan will be issued as a result of the meeting. There was interest expressed by KFA management in the level of support received from the NPR program and in potential participation in the COMEDIE loop experiment being conducted at the CEA.

Stansfield, O.M.

1990-07-25T23:59:59.000Z

470

Lab 3: Fading Lab This lab introduces for loops and while loops through control of LEDs, piezo buzzers, and  

E-Print Network [OSTI]

the same actions with the two loops. Materials 1) Arduino Uno 2) MakeBlock Shield 3) 1 ? LED 4) 1 ? 220 on top of the Arduino. This device provides simple phone cord connections (RJ25) between ports SOURCE BEFORE CHECKING WITH TAs). Supplying too much power and wrong connections can damage the Arduino

Wedeward, Kevin

471

Some Alkali Metal Corrosion Effects in a Rankine Cycle Test Loop  

Science Journals Connector (OSTI)

A two-loop lithium-boiling potassium facility was constructed and tested at the Jet Propulsion Laboratory to simulate the major elements and working fluids of a two-loop, nuclear, turbo-plant concept of intere...

Wayne M. Phillips

1970-01-01T23:59:59.000Z

472

Extreme ultra-violet emission from coronal loop structures. Technical report  

SciTech Connect (OSTI)

We calculate the XUV line and broad-band emission from a model active-region loop. The spectrum is found to be sensitive to both the coronal heating rate and to the loop geometry.

Tucker, W.H.

1980-07-01T23:59:59.000Z

473

Modeling of Chemical Looping Combustion of Methane Using a Ni-Based Oxygen Carrier  

Science Journals Connector (OSTI)

Modeling of Chemical Looping Combustion of Methane Using a Ni-Based Oxygen Carrier ... The FR and loop seal are both bubbling fluidized beds. ... Industrial & Engineering Chemistry Research (2010), 49 (21), 10200-10211 CODEN: IECRED; ISSN:0888-5885. ...

Ahmed Bougamra; Lu Huilin

2014-03-31T23:59:59.000Z

474

SU(2) Lattice Gauge Theory- Local Dynamics on Non-intersecting Electric flux Loops  

E-Print Network [OSTI]

We use Schwinger Bosons as prepotentials for lattice gauge theory to de?ne local linking oper- ators and calculate their action on linking states for 2 + 1 dimensional SU(2) lattice gauge theory. We develop a diagrammatic technique and associate a set of (lattice Feynman) rules to compute the entire loop dynamics diagrammatically. The physical loop space is shown to contain only non- intersecting loop con?gurations after solving the Mandelstam constraint. The smallest plaquette loops are contained in the physical loop space and other con?gurations are generated by the action of a set of fusion operators on this basic loop states enabling one to charaterize any arbitrary loop by the basic plaquette together with the fusion variables. Consequently, the full Kogut-Susskind Hamiltonian and the dynamics of all possible non-intersecting physical loops are formulated in terms of these fusion variables.

Ramesh Anishetty; Indrakshi Raychowdhury

2014-11-12T23:59:59.000Z

475

Ninja: Automated Integrand Reduction via Laurent Expansion for One-Loop Amplitudes  

E-Print Network [OSTI]

We present the public C++ library Ninja, which implements the Integrand Reduction via Laurent Expansion method for the computation of one-loop integrals. The algorithm is suited for applications to complex one-loop processes.

Tiziano Peraro

2014-03-05T23:59:59.000Z

476

Theory and design of a simple tunable Sagnac loop filter for multiwavelength fiber lasers  

Science Journals Connector (OSTI)

We present a novel design for a Sagnac loop filter (SLF) whose periodic output spectrum can be fully controlled by cascading a small-birefringence loop (SBL) with a high-birefringence...

Mirza, Mohammad Aleem; Stewart, George

2008-01-01T23:59:59.000Z

477

Simultaneous recognition of HIV-1 TAR RNA bulge and loop sequences...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

recognition of HIV-1 TAR RNA bulge and loop sequences by cyclic peptide mimics of Tat protein. Simultaneous recognition of HIV-1 TAR RNA bulge and loop sequences by cyclic peptide...

478

Development of a Water Loop Simulation at the Texas A&M University Main Campus  

E-Print Network [OSTI]

A computer simulation model is an economic and convenient tool to perform analysis of chilled water loop. The primary objective of this paper is developing procedure for simulating and optimizing chilled water loop with computer simulation model. A...

Xue, H.; Deng, S.; Claridge, D. E.; Liu, M.

2000-01-01T23:59:59.000Z

479

Closed-loop auditory-based representation for robust speech recognition  

E-Print Network [OSTI]

A closed-loop auditory based speech feature extraction algorithm is presented to address the problem of unseen noise for robust speech recognition. This closed-loop model is inspired by the possible role of the medial ...

Lee, Chia-ying, S.M. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

480

Control-Based Modeling and Simulation of the Chemical-Looping Combustion Process  

Science Journals Connector (OSTI)

The system consists of two fluidized-bed reactors connected through loop seals. ... Son, S. R.; Kim, S. D. Chemical-Looping Combustion with NiO and Fe2O3 in a Thermobalance and Circulating Fluidized Bed Reactor with Double Loops Ind. Eng. ... Garcia-Labiano, F.; de Diego, L.; Adanez, J.; Abad, A.; Gayan, P. Temperature variations in the oxygen carrier particles Turing their reduction and oxidation in a Chemicals-looping combustin system Chem. ...

S. Balaji; Jovan Ilic; B. Erik Ydstie; Bruce H. Krogh

2010-04-13T23:59:59.000Z

Note: This page contains sample records for the topic "loops nozzle technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Investigation of a Canadian Ilmenite as an Oxygen Carrier for Chemical Looping Combustion  

Science Journals Connector (OSTI)

CLC uses an oxygen carrier (OC), usually a metal oxide, to provide oxygen for combusting fuel without the presence of nitrogen from air. ... Chemical-Looping Combustion with NiO and Fe2O3 in a Thermobalance and Circulating Fluidized Bed Reactor with Double Loops ... Application of Fe2O3-Al2O3 Composite Particles as Solid Looping Material of the Chemical-Loop Combustor ...

Fang Liu; Yi Zhang; Liangyong Chen; Dali Qian; James K. Neathery; Saito Kozo; Kunlei Liu

2013-09-23T23:59:59.000Z

482

Development of Iron Oxide Carriers for Chemical Looping Combustion Using Sol?Gel  

Science Journals Connector (OSTI)

Development of Iron Oxide Carriers for Chemical Looping Combustion Using Sol?Gel ... Industrial & Engineering Chemistry Research (2008), 47 (6), 1747-1754 CODEN: IECRED; ISSN:0888-5885. ... Ishida, M.; Takeshita, K.; Suzuki, K.; Ohba, T. Application of FeO?AlO composite particles as solid looping material of the chemical-loop combustor Energy Fuels 2005, 19, 2514 2518 ...

A. M. Kierzkowska; C. D. Bohn; S. A. Scott; J. P. Cleeton; J. S. Dennis; C. R. Mller

2010-04-30T23:59:59.000Z

483

An inverse correlation between loop length and stability in a four-helix-bundle protein  

E-Print Network [OSTI]

their intrinsic func- tionality upon their new environmental context: the calcium-binding activity of a loop has the molten globule behavior of apo- - lactalbumin in the absence of calcium [18]. Conversely, loops have beenAn inverse correlation between loop length and stability in a four-helix-bundle protein Athena D

Mochrie, Simon

484

Host Range and Variability of Calcium Binding by Surface Loops in the Capsids of Canine and  

E-Print Network [OSTI]

Host Range and Variability of Calcium Binding by Surface Loops in the Capsids of Canine and Feline, consisting of residues 359 to 375 of the capsid protein. This loop binds a divalent calcium ion in FPV and in the presence or absence of Ca2 . The largest structural difference was found to occur in a ¯exible surface loop

Rossmann, Michael G.

485

Comprehensive computational model of single-and dual-loop optoelectronic  

E-Print Network [OSTI]

Comprehensive computational model of single- and dual-loop optoelectronic oscillators describe a comprehensive computational model for single- loop and dual-loop optoelectronic oscillators amplifiers and oscillators; (230.0250) Optoelectronics; (230.4910) Oscillators. References and links 1. X. S

Horowitz, Moshe

486

Model Free Closed-Loop Flow Control ERCAN ATAM, LIONEL MATHELIN, LAURENT CORDIER  

E-Print Network [OSTI]

Model Free Closed-Loop Flow Control ERCAN ATAM, LIONEL MATHELIN, LAURENT CORDIER *CNRS- Mathelin-Cordier (LIMSI-CNRS,IP') Model Free Closed-Loop Flow Control ECCOMAS'12 1 / 21 #12;Outline 1 and some future work Atam- Mathelin-Cordier (LIMSI-CNRS,IP') Model Free Closed-Loop Flow Control ECCOMAS'12

Mathelin, Lionel

487

Effective SU(2) Polyakov Loop Theories with Heavy Quarks on the Lattice  

E-Print Network [OSTI]

We compare SU(2) Polyakov loop models with different effective actions with data from full two-color QCD simulations around and above the critical temperature. We then apply the effective theories at finite temperature and density to extract quantities like Polyakov loop correlators, effective Polyakov loop potentials and baryon density.

Philipp Scior; David Scheffler; Dominik Smith; Lorenz von Smekal

2014-12-22T23:59:59.000Z

488

Capture of vacancies by extrinsic dislocation loops in silicon S. B. Herner,a)  

E-Print Network [OSTI]

Capture of vacancies by extrinsic dislocation loops in silicon S. B. Herner,a) H.-J. Gossmann, F. H of vacancies in Si by a band of extrinsic dislocation loops has been observed in Sb doping superlattices of vacancies, which enhances the diffusion of Sb spikes located between the surface and loop band

Florida, University of

489

Vacancy clustering and prismatic dislocation loop formation in aluminum Vikram Gavini  

E-Print Network [OSTI]

Vacancy clustering and prismatic dislocation loop formation in aluminum Vikram Gavini Department vacancy clusters with smaller and smaller energy. Further, the results show that a seven vacancy cluster that vacancy clustering leads to prismatic loop, and that these loops can be stable at extremely small sizes

Bhattacharya, Kaushik

490

Synthesizing Transformations for Locality Enhancement of Imperfectly-nested Loop Nests  

E-Print Network [OSTI]

Synthesizing Transformations for Locality Enhancement of Imperfectly-nested Loop Nests Nawaaz Ahmed in imperfectly-nested loops. The key idea is to em- bed the iteration space of every statement in a loop nest into a spe- cial iteration space called the product space. The product space can be viewed as a perfectly-nested

Pingali, Keshav K.

491

NETL Technologies Recognized for Technology Development, Transfer |  

Broader source: Energy.gov (indexed) [DOE]

Recognized for Technology Development, Transfer Recognized for Technology Development, Transfer NETL Technologies Recognized for Technology Development, Transfer October 25, 2013 - 1:31pm Addthis Did you know? The Federal Laboratory Consortium for Technology Transfer is the nationwide network of federal laboratories that provides the forum to develop strategies and opportunities for linking laboratory mission technologies and expertise with the marketplace. In consonance with the Federal Technology Transfer Act of 1986 and related federal policy, the mission of the FLC is to promote and facilitate the rapid movement of federal laboratory research results and technologies into the mainstream of the U.S. economy. Learn more about the FLC. A great invention that sits on a shelf, gathering dust, benefits no one.

492

NREL: Technology Transfer - Technologies Available for Licensing  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Technologies Available for Licensing Technologies Available for Licensing Photo of NREL scientist in the NREL Hydrogen Lab. NREL's scientists and engineers develop award-winning technologies available for licensing. NREL scientists and engineers produce breakthrough and award-winning renewable energy and energy efficiency technologies that are available for licensing. We have many licensing opportunities for NREL-developed technologies, including our featured LED technologies. To see all our technologies available for licensing, visit the EERE Innovation Portal and search for NREL. Learn about our licensing agreement process. Contact For more information about licensing NREL-developed technologies, contact Eric Payne, 303-275-3166. Ombuds NREL strives to quickly resolve any issue or concern you may have regarding

493

APPENDIX B: CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS PRE-COMBUSTION SOLVENTS  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS PRE-COMBUSTION SOLVENTS PRE-COMBUSTION SORBENTS PRE-COMBUSTION MEMBRANES POST-COMBUSTION SOLVENTS POST-COMBUSTION SORBENTS POST-COMBUSTION MEMBRANES OXY-COMBUSTION OXYGEN PRODUCTION CHEMICAL LOOPING ADVANCED COMPRESSION R&D COLLABORATIONS B-1 APPENDIX B: CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS APPENDIX B: CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS NATIONAL ENERGY TECHNOLOGY LABORATORY PRE-COMBUSTION SOLVENTS B-6 SRI International - CO 2 Capture Using AC-ABC Processt B-7 PRE-COMBUSTION SORBENTS B-14 TDA Research - CO 2 Capture for Low-Rank Coal IGCC Systems B-15 URS Group - Sorbent Development for WGS B-18 Air Products and Chemicals - Advanced Acid Gas Separation B-24 Ohio State University-Department of Chemical Engineering - Calcium Looping for Hydrogen Production B-33

494

Fujita LaboratoryTokyo Instituteof Technology Tokyo Instituteof Technology  

E-Print Network [OSTI]

Fujita LaboratoryTokyo Instituteof Technology Tokyo Instituteof Technology Fujita LaboratoryTokyo Institute of Technology Tokyo Institute of Technology 231 #12;Fujita LaboratoryTokyo Instituteof Technology Tokyo Instituteof Technology 2 IT #12;Fujita LaboratoryTokyo Instituteof

495

Microsoft Word - DOE Report on OSU Looping final.doc  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

December 2007 December 2007 DOE/NETL-2008/1307 Independent Assessment of the Potential of Chemical-Looping in the Context of a Fischer-Tropsch Plant Chemical-Looping Process in a Coal-to-Liquids Configuration Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name,

496

Magnetic Bianchi I Universe in Loop Quantum Cosmology  

E-Print Network [OSTI]

We examine the dynamical consequences of homogeneous cosmological magnetic fields in the framework of loop quantum cosmology. We show that a big-bounce occurs in a collapsing magnetized Bianchi I universe, thus extending the known cases of singularity-avoidance. Previous work has shown that perfect fluid Bianchi I universes in loop quantum cosmology avoid the singularity via a bounce. The fluid has zero anisotropic stress, and the shear anisotropy in this case is conserved through the bounce. By contrast, the magnetic field has nonzero anisotropic stress, and shear anisotropy is not conserved through the bounce. After the bounce, the universe enters a classical phase. The addition of a dust fluid does not change these results qualitatively.

Roy Maartens; Kevin Vandersloot

2008-12-10T23:59:59.000Z

497

Magnetic and electric screening masses from Polyakov-loop correlations  

E-Print Network [OSTI]

Screening properties of the quark gluon plasma are studied from Polyakov-loop correlation in lattice QCD simulations with two flavors of improved Wilson quarks at temperatures $T/\\Tpc \\simeq 1$--4 where $\\Tpc$ is the pseudocritical temperature. Using the Euclidean-time reflection symmetry and the charge conjugation symmetry, we introduce various types of Polyakov-loop correlation functions and extract screening masses in magnetic and electric sectors. We find that the temperature dependence of the screening masses are well described by the weak coupling expansion. We also find that a ratio of the screening masses in the electric sector to the magnetic sector shows qualitative agreement with a prediction from the dimensionally-reduced effective field theory and the N=4 supersymmetric Yang-Mills theory at $1.3 < T/\\Tpc < 3$.

Y. Maezawa; S. Aoki; S. Ejiri; T. Hatsuda; N. Ishii; K. Kanaya; N. Ukita; T. Umeda

2008-11-04T23:59:59.000Z

498

CFD model for the simulation of chemical looping combustion  

Science Journals Connector (OSTI)

Abstract A chemical looping combustion (CLC) system uses a metal oxide solid carrier to combust a source of fuel in isolation from the source of oxygen which produces an exhaust gas of primarily carbon dioxide and water. In this work, a full three-dimensional model of a chemical looping combustion system was developed to simulate the particlefluid hydrodynamics, thermal characteristics, and reaction efficiency of the CLC system using coal particles as a fuel source. Multiple heterogeneous and homogenous reactions are considered in the CLC model including the oxidation and reduction reactions of the metal oxide carrier and gasification reactions. Within each coal particle, the temperature-dependent devolatilization, moisture release, and particle swelling effects are included. Modeling results showing fluidization regimes, circulation rate, reactor efficiencies, and temperature profiles are presented to demonstrate the utility of the model.

James M. Parker

2014-01-01T23:59:59.000Z

499

Instanton calculus and loop operator in supersymmetric gauge theory  

Science Journals Connector (OSTI)

We compute the one-point function of the glueball loop operator in the maximally confining phase of supersymmetric gauge theory using instanton calculus. In the maximally confining phase the residual symmetry is the diagonal U(1) subgroup and the localization formula implies that the chiral correlation functions are the sum of the contributions from each fixed point labeled by the Young diagram. The summation can be performed exactly by operator formalism of free fermions, which is also featured in the equivariant Gromov-Witten theory of P1. By taking the Laplace transformation of the glueball loop operator, we find an exact agreement with the previous results for the generating function (resolvent) of the glueball one-point functions.

Hiroaki Kanno and Sanefumi Moriyama

2008-06-02T23:59:59.000Z

500

Effect of charmed meson loops on charmonium transitions  

Science Journals Connector (OSTI)

The effects of intermediate charmed mesons on charmonium transitions with the emission of one pion or eta are studied systematically. Based on a nonrelativistic effective field theory we show that charmed meson loops are enhanced compared to the corresponding tree-level contributions for transitions between two S-wave charmonia as well as for transitions between two P-wave charmonia. On the contrary, for the transitions between one S-wave and one P-wave charmonium state, the loops need to be analyzed case by case and often appear to be suppressed. The relation to and possible implications for an effective Lagrangian approach are also discussed. This study at the same time provides a cross-check for the numerical evaluations.

Feng-Kun Guo; C. Hanhart; Gang Li; Ulf-G. Meiner; Qiang Zhao

2011-02-11T23:59:59.000Z