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1

Mercantile Buildings  

U.S. Energy Information Administration (EIA) Indexed Site

Mercantile Mercantile Characteristics by Activity... Mercantile Mercantile buildings are those used for the sale and display of goods other than food (buildings used for the sales of food are classified as food sales). This category includes enclosed malls and strip shopping centers. Basic Characteristics [ See also: Equipment | Activity Subcategories | Energy Use ] Mercantile Buildings... Almost half of all mercantile buildings were less than 5,000 square feet. Roughly two-thirds of mercantile buildings housed only one establishment. Another 20 percent housed between two and five establishments, and the remaining 12 percent housed six or more establishments. Tables: Buildings and Size Data by Basic Characteristics Establishment, Employment, and Age Data by Characteristics

2

Mercantile (Retail Other Than Mall) | Open Energy Information  

Open Energy Info (EERE)

Retail Other Than Mall) Retail Other Than Mall) Jump to: navigation, search Building Type Mercantile (Retail Other Than Mall) Definition Buildings used for the sale and display of goods other than food. Sub Categories retail store; beer, wine, or liquor store; rental center; dealership or showroom for vehicles or boats; studio/gallery References EIA CBECS Building Types [1] References ↑ EIA CBECS Building Types U.S. Energy Information Administration (Oct 2008) Retrieved from "http://en.openei.org/w/index.php?title=Mercantile_(Retail_Other_Than_Mall)&oldid=270108" Category: CBECS Building Types What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation:

3

Global Trends of CME Deflections Based on CME and Solar Parameters  

E-Print Network (OSTI)

Accurate space weather forecasting requires knowledge of the trajectory of coronal mass ejections (CMEs), including any deflections close to the Sun or through interplanetary space. Kay et al. 2013 introduced ForeCAT, a model of CME deflection resulting from the background solar magnetic field. For a magnetic field solution corresponding to Carrington Rotation (CR) 2029 (declining phase, April-May 2005), the majority of the CMEs deflected to the Heliospheric Current Sheet (HCS), the minimum in magnetic pressure on global scales. Most of the deflection occurred below 4 Rs. Here we extend ForeCAT to include a three dimensional description of the deflecting CME. We attempt to answer the following questions: a) Do all CMEs deflect to the magnetic minimum? and b) Does most deflection occur within the first few solar radii (~4 Rs)? Results for solar minimum and declining phase CMEs show that not every CME deflects to the magnetic minimum and that typically about half of the deflection occurs below 10 Rs. Slow, narr...

Kay, C; Evans, R M

2014-01-01T23:59:59.000Z

4

CME | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

CME CME Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events Publications Contact BES Home Centers CME Print Text Size: A A A RSS Feeds FeedbackShare Page Center for Molecular Electrocatalysis Director(s): R. Morris Bullock Lead Institution: Pacific Northwest National Laboratory Mission: To understand, design and develop molecular electrocatalysts for solar fuel production and use. Research Topics: catalysis (homogeneous), catalysis (heterogeneous), solar (fuels), bio-inspired, energy storage (including batteries and capacitors), hydrogen and fuel cells, charge transport, materials and chemistry by design, synthesis (novel materials) Materials Studied: MATERIALS: metal Experimental and Theoretical Methods: X-ray diffraction and scattering, density functional theory (DFT), quantum

5

ROTATION OF WHITE LIGHT CME STRUCTURES AS INFERRED FROM  

E-Print Network (OSTI)

field, and it could shed light on the problems related to connecting solar surface phenomenaROTATION OF WHITE LIGHT CME STRUCTURES AS INFERRED FROM LASCO CORONAGRAPH Vasyl Yurchyshyn Big Bear Solar Observatory 40386 North Shore Lane, Big Bear City, CA 92314 Valentyna Abramenko Big Bear Solar

6

Time series of a CME blasting out from the Sun  

E-Print Network (OSTI)

#12;Time series of a CME blasting out from the Sun Composite image of the Sun in UV light with the naked eye, the Sun seems static, placid, constant. From the ground, the only notice- able variations in the Sun are its location (where will it rise and set today?) and its color (will clouds cover

Christian, Eric

7

Crystal Structure of the Transcriptional Regulator CmeR From Campylobacter Jejuni  

SciTech Connect

The CmeABC multidrug efflux pump, which belongs to the resistance-nodulation-division (RND) family, recognizes and extrudes a broad range of antimicrobial agents and is essential for Campylobacter jejuni colonization of the animal intestinal tract by mediating the efflux of bile acids. The expression of CmeABC is controlled by the transcriptional regulator CmeR, whose open reading frame is located immediately upstream of the cmeABC operon. To understand the structural basis of CmeR regulation, we have determined the crystal structure of CmeR to 2.2 {angstrom} resolution, revealing a dimeric two-domain molecule with an entirely helical architecture similar to members of the TetR family of transcriptional regulators. Unlike the rest of the TetR regulators, CmeR has a large center-to-center distance (54 {angstrom}) between two N termini of the dimer, and a large flexible ligand-binding pocket in the C-terminal domain. Each monomer forms a 20 {angstrom} long tunnel-like cavity in the ligand-binding domain of CmeR and is occupied by a fortuitous ligand that is identified as glycerol. The binding of glycerol to CmeR induces a conformational state that is incompatible with target DNA. As glycerol has a chemical structure similar to that of potential ligands of CmeR, the structure obtained mimics the induced form of CmeR. These findings reveal novel structural features of a TetR family regulator, and provide new insight into the mechanisms of ligand binding and CmeR regulation.

Gu, R.; Su, C.-C.; Shi, F.; McDermott, G.; Zhang, Q.; Yu, E.W.

2009-06-01T23:59:59.000Z

8

Initiation of CME event observed on November 3, 2010: Multi-wavelength Perspective  

E-Print Network (OSTI)

One of the major unsolved problems in Solar Physics is that of CME initiation. In this paper, we have studied the initiation of a flare associated CME which occurred on 2010 November 03 using multi-wavelength observations recorded by Atmospheric Imaging Assembly (AIA) on board Solar Dynamics Observatory (SDO) and Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI). We report an observation of an inflow structure initially in 304~{\\AA} and in 1600~{\\AA} images, a few seconds later. This inflow strucure was detected as one of the legs of the CME. We also observed a non-thermal compact source concurrent and near co-spatial with the brightening and movement of the inflow structure. The appearance of this compact non-thermal source, brightening and movement of the inflow structure and the subsequent outward movement of the CME structure in the corona led us to conclude that the CME initiation was caused by magnetic reconnection.

Mulay, Sargam; Tripathi, Durgesh; Isobe, Hiroaki; Glesener, Lindsay

2014-01-01T23:59:59.000Z

9

Effects of the 5 October 1996 CME at 4.4 AU: Ulysses observations  

SciTech Connect

The authors present observations from Ulysses associated with a large coronal mass ejection (CME) that lifted off the west limb of the Sun on 5 October, 1996. The study focuses on the effects of the interplanetary counterpart of the CME on the energetic particle populations at the location of Ulysses, in particular the effect on the sequence of corotating enhancements that had been observed prior to its arrival. They conclude that, despite its large spatial extent, the CME caused no permanent deformation of the heliospheric current sheet.

Marsden, R.G.; Desai, M.I.; Sanderson, T.R. [Estec, Noordwijk (Netherlands). Space Science Dept. of ESA; Forsyth, R.J. [Imperial Coll., London (United Kingdom); Gosling, J.T. [Los Alamos National Lab., NM (United States)

1997-09-01T23:59:59.000Z

10

14CME Kinetic Energy and Mass Kinetic energy is the energy that a  

E-Print Network (OSTI)

14CME Kinetic Energy and Mass Kinetic energy is the energy that a body has by virtue of its mass the table by determining the value of the missing entries using the formula for Kinetic Energy. Problem 2: What is the minimum and maximum range for the observed kinetic energies for the 10 CMEs? The largest

11

A statistical study of the relationship between the sunspot number, maximum CME speed and  

E-Print Network (OSTI)

, J.P. Rozelot4 1 Big Bear Solar Observatory, Big Bear City, CA 92314 USA 2 NASA Goddard Space Flight correlated with the fine structures in the CME speed profile than that in the SSN data. 3) Similar, electric power, pipelines, etc. Numerous severe storms occur during the maximal phase

12

KL2/Catalyst Medical Research Investigator Training (CMeRIT) Request for Applications (RFA)  

E-Print Network (OSTI)

KL2/Catalyst Medical Research Investigator Training (CMeRIT) Request for Applications (RFA) Due Decisions Announced: Late September, 2014 Funding Start Date: October 1, 2014 II. Funding The KL2/Catalyst Harvard Catalyst will be tuition-free. Each awardee will also receive a small research support funding

Church, George M.

13

Register online at: cme.uchicago.edu Friday, April 5 Sunday, April 7, 2013  

E-Print Network (OSTI)

Register online at: cme.uchicago.edu Friday, April 5 ­ Sunday, April 7, 2013 THE UNIVERSITY. Please join us for an informative meeting and exceptional educational experience. Sincerely, Charles, obstetrics, critical care and chronic pain management services; 3. Utilize specific CPT codes to enhance

He, Chuan

14

Magnetic Interaction of a Super-CME with the Earth's Magnetosphere: Scenario for Young Earth  

E-Print Network (OSTI)

Solar eruptions, known as Coronal Mass Ejections (CMEs), are frequently observed on our Sun. Recent Kepler observations of superflares on G-type stars have implied that so called super-CMEs, possessing kinetic energies 10 times of the most powerful CME event ever observed on the Sun, could be produced with a frequency of 1 event per 800-2000 yr on solar-like slowly rotating stars. We have performed a 3D time-dependent global magnetohydrodynamic simulation of the magnetic interaction of such a CME cloud with the Earth's magnetosphere. We calculated the global structure of the perturbed magnetosphere and derive the latitude of the open-closed magnetic field boundary. We also estimated energy fluxes penetrating the Earth's ionosphere and discuss the consequences of energetic particle fluxes on biological systems on early Earth.

Airapetian, Vladimir S; Danchi, William

2014-01-01T23:59:59.000Z

15

Efficacy of an integrated continuing medical education (CME) and quality improvement (QI) program on radiation oncologist (RO) clinical practice  

SciTech Connect

Purpose: There has been little radiation oncologist (RO)-specific research in continuing medical education (CME) or quality improvement (QI) program efficacy. Our aim was to evaluate a CME/QI program for changes in RO behavior, performance, and adherence to department protocols/studies over the first 12 months of the program. Methods and Materials: The CME/QI program combined chart audit with feedback (C-AWF), simulation review AWF (SR-AWF), reminder checklists, and targeted CME tutorials. Between April 2003 and March 2004, management of 75 patients was evaluated by chart audit with feedback (C-AWF) and 178 patients via simulation review audit (SR-AWF) using a validated instrument. Scores were presented, and case management was discussed with individualized educational feedback. RO behavior and performance was compared over the first year of the program. Results: Comparing the first and second 6 months, there was a significant improvement in mean behavior (12.7-13.6 of 14, p = 0.0005) and RO performance (7.6-7.9 of 8, p = 0.018) scores. Protocol/study adherence significantly improved from 90.3% to 96.6% (p = 0.005). A total of 50 actions were generated, including the identification of learning needs to direct CME tutorials, the systematic change of suboptimal RO practice, and the alteration of deficient management of 3% of patients audited during the program. Conclusion: An integrated CME/QI program combining C-AWF, SR-AWF, QI reminders, and targeted CME tutorials effectively improved targeted RO behavior and performance over a 12-month period. There was a corresponding increase in departmental protocol and study adherence.

Leong, Cheng Nang [Department of Radiation Oncology, Cancer Institute, National University Hospital (Singapore) and Department of Radiation Oncology, Cancer Institute, Tan Tock Seng Hospital (Singapore)]. E-mail: Cheng_Nang_Leong@mail.nhg.com.sg; Shakespeare, Thomas Philip [Department of Radiation Oncology, Cancer Institute, National University Hospital (Singapore); North Coast Cancer Institute, Coffs Harbour (Australia); Mukherjee, Rahul K. [Department of Radiation Oncology, Cancer Institute, National University Hospital (Singapore); Department of Radiation Oncology, Cancer Institute, Tan Tock Seng Hospital (Singapore); Back, Michael F. [Department of Radiation Oncology, Cancer Institute, National University Hospital (Singapore); Department of Radiation Oncology, Cancer Institute, Tan Tock Seng Hospital (Singapore); Lee, Khai Mun [Department of Radiation Oncology, Cancer Institute, National University Hospital (Singapore); Department of Radiation Oncology, Cancer Institute, Tan Tock Seng Hospital (Singapore); Lu, Jiade Jay [Department of Radiation Oncology, Cancer Institute, National University Hospital (Singapore); Department of Radiation Oncology, Cancer Institute, Tan Tock Seng Hospital (Singapore); Wynne, Christopher J. [Department of Radiation Oncology, Cancer Institute, National University Hospital (Singapore); Lim, Keith [Department of Radiation Oncology, The Cancer Institute, National University Hospital (Singapore); Tang, Johann [Department of Radiation Oncology, Cancer Institute, National University Hospital (Singapore); Department of Radiation Oncology, Cancer Institute, Tan Tock Seng Hospital (Singapore); Zhang Xiaojian [Department of Radiation Oncology, Cancer Hospital, Fudan Hospital, Shanghai (China)

2006-12-01T23:59:59.000Z

16

In Situ Heating of the 2007 May 19 CME Ejecta Detected by Stereo/PLASTIC and ACE  

Science Journals Connector (OSTI)

In situ measurements of ion charge states can provide unique insight into the heating and evolution of coronal mass ejections (CMEs) when tested against realistic non-equilibrium ionization modeling. In this work, we investigate the representation of the CME magnetic field as an expanding spheromak configuration, where the plasma heating is prescribed by the choice of anomalous resistivity and the spheromak dynamics. We chose as a test case the 2007 May 19 CME observed by STEREO and ACE. The spheromak is an appealing physical model, because the location and degree of heating are fixed by the choice of anomalous resistivity and the spheromak expansion rate which we constrain with observations. This model can provide the heating required between 1.1R ? and Earth's orbit to produce charge states observed in the CME flux rope. However, this source of heating in the spheromak alone has difficulty accounting for the rapid heating to Fe8-Fe11+ at lower heights, as observed in STEREO EUVI due to the rapid radiative cooling that occurs at the high densities involved. Episodes of heating and cooling clearly unrelated to spheromak expansion are observed prior to the eruption, and presumably still play a role during the eruption itself. Spheromak heating is also not capable of reproducing the high Fe charge states (Fe16+ and higher) seen in situ exterior to the flux rope in this CME. Thus, while the spheromak configuration may be a valid model for the magnetic topology, other means of energization are still required to provide much of the rapid heating observed.

Cara E. Rakowski; J. Martin Laming; Maxim Lyutikov

2011-01-01T23:59:59.000Z

17

In Situ Heating of the 2007 May 19 CME Ejecta Detected by STEREO/PLASTIC and ACE  

E-Print Network (OSTI)

In situ measurements of ion charge states can provide unique insight into the heating and evolution of coronal mass ejections when tested against realistic non-equilibrium ionization modeling. In this work we investigate the representation of the CME magnetic field as an expanding spheromak configuration, where the plasma heating is prescribed by the choice of anomalous resistivity and the spheromak dynamics. We chose as a test case, the 19 May 2007 CME observed by STEREO and ACE. The spheromak is an appealing physical model, because the location and degree of heating is fixed by the choice of anomalous resistivity and the spheromak expansion rate which we constrain with observations. This model can provide the heating required between 1.1$R_{\\sun}$ and earth orbit to produce charge states observed in the CME flux rope. However this source of heating in the spheromak alone has difficulty accounting for the rapid heating to Fe$^{8 - 11+}$ at lower heights, as observed in STEREO EUVI due to the rapid radiative ...

Rakowski, Cara E; Lyutikov, Maxim

2011-01-01T23:59:59.000Z

18

Comparative Guide to DCE Marketing Services Tiers All live CME courses accredited by HMS DCE receive Base Marketing Services.1 These newly streamlined  

E-Print Network (OSTI)

Comparative Guide to DCE Marketing Services Tiers All live CME courses accredited by HMS DCE receive Base Marketing Services.1 These newly streamlined services offer Course Directors and Administrators a standardized, comprehensive and economical solution for email and print marketing. Strategic

Paulsson, Johan

19

Evolution of the 2012 July 12 CME from the Sun to the Earth: Data-Constrained Three-Dimensional MHD Simulations  

E-Print Network (OSTI)

The dynamic process of coronal mass ejections (CMEs) in the heliosphere provides us the key information for evaluating CMEs' geo-effectiveness and improving the accurate prediction of CME induced Shock Arrival Time (SAT) at the Earth. We present a data constrained three dimensional (3D) magnetohydrodynamic (MHD) simulation of the evolution of the CME in a realistic ambient solar wind for the July 12-16, 2012 event by using the 3D COIN-TVD MHD code. A detailed comparison of the kinematic evolution of the CME between the observations and the simulation is carried out, including the usage of the time-elongation maps from the perspectives of both Stereo A and Stereo B. In this case study, we find that our 3D COIN-TVD MHD model, with the magnetized plasma blob as the driver, is able to re-produce relatively well the real 3D nature of the CME in morphology and their evolution from the Sun to Earth. The simulation also provides a relatively satisfactory comparison with the in-situ plasma data from the Wind spacecraf...

Shen, Fang; Zhang, Jie; Hess, Phillip; Wang, Yuming; Feng, Xueshang; Cheng, Hongze; Yang, Yi

2015-01-01T23:59:59.000Z

20

Heat exchanger  

DOE Patents (OSTI)

A heat exchanger comparising a shell attached at its open end to one side of a tube sheet and a detachable head connected to the other side of said tube sheet. The head is divided into a first and second chamber in fluid communication with a nozzle inlet and nozzle outlet, respectively, formed in said tube sheet. A tube bundle is mounted within said shell and is provided with inlets and outlets formed in said tube sheet in communication with said first and second chambers, respectively.

Brackenbury, Phillip J. (Richland, WA)

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Heat exchanger  

DOE Patents (OSTI)

A heat exchanger comparising a shell attached at its open end to one side of a tube sheet and a detachable head connected to the other side of said tube sheet. The head is divided into a first and second chamber in fluid communication with a nozzle inlet and nozzle outlet, respectively, formed in said tube sheet. A tube bundle is mounted within said shell and is provided with inlets and outlets formed in said tube sheet in communication with said first and second chambers, respectively.

Brackenbury, P.J.

1983-12-08T23:59:59.000Z

22

Segmented heat exchanger  

DOE Patents (OSTI)

A segmented heat exchanger system for transferring heat energy from an exhaust fluid to a working fluid. The heat exchanger system may include a first heat exchanger for receiving incoming working fluid and the exhaust fluid. The working fluid and exhaust fluid may travel through at least a portion of the first heat exchanger in a parallel flow configuration. In addition, the heat exchanger system may include a second heat exchanger for receiving working fluid from the first heat exchanger and exhaust fluid from a third heat exchanger. The working fluid and exhaust fluid may travel through at least a portion of the second heat exchanger in a counter flow configuration. Furthermore, the heat exchanger system may include a third heat exchanger for receiving working fluid from the second heat exchanger and exhaust fluid from the first heat exchanger. The working fluid and exhaust fluid may travel through at least a portion of the third heat exchanger in a parallel flow configuration.

Baldwin, Darryl Dean (Lafayette, IN); Willi, Martin Leo (Dunlap, IL); Fiveland, Scott Byron (Metamara, IL); Timmons, Kristine Ann (Chillicothe, IL)

2010-12-14T23:59:59.000Z

23

Psychology on Exchange InternationalExchangeProgram  

E-Print Network (OSTI)

Psychology on Exchange InternationalExchangeProgram Psychology majors are welcome to apply Honours, you need to take into account the advice from the Department of Psychology (http://sydney.edu.au/ current_students/student_exchange/forms_downloads.shtml). Timing To meet Australian Psychology

Viglas, Anastasios

24

Woven heat exchanger  

DOE Patents (OSTI)

This invention relates to a heat exchanger for waste heat recovery from high temperature industrial exhaust streams. In a woven ceramic heat exchanger using the basic tube-in-shell design, each heat exchanger consisting of tube sheets and tube, is woven separately. Individual heat exchangers are assembled in cross-flow configuration. Each heat exchanger is woven from high temperature ceramic fiber, the warp is continuous from tube to tube sheet providing a smooth transition and unitized construction.

Piscitella, R.R.

1984-07-16T23:59:59.000Z

25

Architecture on Exchange InternationalExchangeProgram  

E-Print Network (OSTI)

. Previous students have attended: · McMaster University, Canada · Malmö University, Sweden · University of Leeds, United Kingdom · Northeastern University, USA · Purdue University, USA · University of California on page 2 5 International Office Study Abroad and Exchange Program Level 4, Jane Foss Russell Building (G

Viglas, Anastasios

26

Agriculture on Exchange InternationalExchangeProgram  

E-Print Network (OSTI)

-wide exchange destinations for Agriculture majors include: Canada....................McGill University, Faculty of Arts (AgEc only) (www.umanitoba.ca) United Kingdom.....University of Leeds, School of Earth and Environment (www.leeds.ac.uk) .................................University of Nottingham, School of Biosciences

Viglas, Anastasios

27

Wound tube heat exchanger  

DOE Patents (OSTI)

What is disclosed is a wound tube heat exchanger in which a plurality of tubes having flattened areas are held contiguous adjacent flattened areas of tubes by a plurality of windings to give a double walled heat exchanger. The plurality of windings serve as a plurality of effective force vectors holding the conduits contiguous heat conducting walls of another conduit and result in highly efficient heat transfer. The resulting heat exchange bundle is economical and can be coiled into the desired shape. Also disclosed are specific embodiments such as the one in which the tubes are expanded against their windings after being coiled to insure highly efficient heat transfer.

Ecker, Amir L. (Duncanville, TX)

1983-01-01T23:59:59.000Z

28

Anion exchange membrane  

DOE Patents (OSTI)

An anion exchange membrane and fuel cell incorporating the anion exchange membrane are detailed in which proazaphosphatrane and azaphosphatrane cations are covalently bonded to a sulfonated fluoropolymer support along with anionic counterions. A positive charge is dispersed in the aforementioned cations which are buried in the support to reduce the cation-anion interactions and increase the mobility of hydroxide ions, for example, across the membrane. The anion exchange membrane has the ability to operate at high temperatures and in highly alkaline environments with high conductivity and low resistance.

Verkade, John G; Wadhwa, Kuldeep; Kong, Xueqian; Schmidt-Rohr, Klaus

2013-05-07T23:59:59.000Z

29

Green Exchange | Open Energy Information  

Open Energy Info (EERE)

Exchange Place: New York, New York Zip: NY 10282 Product: String representation "The Green Excha ... es marketplace." is too long. References: Green Exchange1 This article is a...

30

Active microchannel heat exchanger  

DOE Patents (OSTI)

The present invention is an active microchannel heat exchanger with an active heat source and with microchannel architecture. The microchannel heat exchanger has (a) an exothermic reaction chamber; (b) an exhaust chamber; and (c) a heat exchanger chamber in thermal contact with the exhaust chamber, wherein (d) heat from the exothermic reaction chamber is convected by an exothermic reaction exhaust through the exhaust chamber and by conduction through a containment wall to the working fluid in the heat exchanger chamber thereby raising a temperature of the working fluid. The invention is particularly useful as a liquid fuel vaporizer and/or a steam generator for fuel cell power systems, and as a heat source for sustaining endothermic chemical reactions and initiating exothermic reactions.

Tonkovich, Anna Lee Y. (Pasco, WA) [Pasco, WA; Roberts, Gary L. (West Richland, WA) [West Richland, WA; Call, Charles J. (Pasco, WA) [Pasco, WA; Wegeng, Robert S. (Richland, WA) [Richland, WA; Wang, Yong (Richland, WA) [Richland, WA

2001-01-01T23:59:59.000Z

31

Technology Performance Exchange  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technology Performance Exchange Technology Performance Exchange TDM - Jason Koman (BTO) TDM - Dave Catarious (FEMP) William Livingood National Renewable Energy Laboratory William.Livingood@nrel.gov 303-384-7490 April 2, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem: Perceived fiscal risk associated with the installation of unfamiliar technologies impedes adoption rates for cost-effective, energy-saving products. Impact of Project: Enable end users to quickly and

32

Chemical exchange program analysis.  

SciTech Connect

As part of its EMS, Sandia performs an annual environmental aspects/impacts analysis. The purpose of this analysis is to identify the environmental aspects associated with Sandia's activities, products, and services and the potential environmental impacts associated with those aspects. Division and environmental programs established objectives and targets based on the environmental aspects associated with their operations. In 2007 the most significant aspect identified was Hazardous Materials (Use and Storage). The objective for Hazardous Materials (Use and Storage) was to improve chemical handling, storage, and on-site movement of hazardous materials. One of the targets supporting this objective was to develop an effective chemical exchange program, making a business case for it in FY07, and fully implementing a comprehensive chemical exchange program in FY08. A Chemical Exchange Program (CEP) team was formed to implement this target. The team consists of representatives from the Chemical Information System (CIS), Pollution Prevention (P2), the HWMF, Procurement and the Environmental Management System (EMS). The CEP Team performed benchmarking and conducted a life-cycle analysis of the current management of chemicals at SNL/NM and compared it to Chemical Exchange alternatives. Those alternatives are as follows: (1) Revive the 'Virtual' Chemical Exchange Program; (2) Re-implement a 'Physical' Chemical Exchange Program using a Chemical Information System; and (3) Transition to a Chemical Management Services System. The analysis and benchmarking study shows that the present management of chemicals at SNL/NM is significantly disjointed and a life-cycle or 'Cradle-to-Grave' approach to chemical management is needed. This approach must consider the purchasing and maintenance costs as well as the cost of ultimate disposal of the chemicals and materials. A chemical exchange is needed as a mechanism to re-apply chemicals on site. This will not only reduce the quantity of unneeded chemicals and the amount spent on new purchases, but will also avoid disposal costs. If SNL/NM were to realize a 5 percent reduction in chemical inventory and a 10 percent reduction in disposal of unused chemicals the total savings would be $189, 200 per year.

Waffelaert, Pascale

2007-09-01T23:59:59.000Z

33

Building Energy Data Exchange Specification Scoping Report |...  

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

Building Energy Data Exchange Specification Scoping Report Building Energy Data Exchange Specification Scoping Report The Building Energy Data Exchange Specification (BEDES),...

34

Thermoelectric heat exchange element  

DOE Patents (OSTI)

A thermoelectric heat exchange module includes a first substrate including a heat receptive side and a heat donative side and a series of undulatory pleats. The module may also include a thermoelectric material layer having a ZT value of 1.0 or more disposed on at least one of the heat receptive side and the heat donative side, and an electrical contact may be in electrical communication with the thermoelectric material layer.

Callas, James J. (Peoria, IL); Taher, Mahmoud A. (Peoria, IL)

2007-08-14T23:59:59.000Z

35

Heat exchanger-accumulator  

DOE Patents (OSTI)

What is disclosed is a heat exchanger-accumulator for vaporizing a refrigerant or the like, characterized by an upright pressure vessel having a top, bottom and side walls; an inlet conduit eccentrically and sealingly penetrating through the top; a tubular overflow chamber disposed within the vessel and sealingly connected with the bottom so as to define an annular outer volumetric chamber for receiving refrigerant; a heat transfer coil disposed in the outer volumetric chamber for vaporizing the liquid refrigerant that accumulates there; the heat transfer coil defining a passageway for circulating an externally supplied heat exchange fluid; transferring heat efficiently from the fluid; and freely allowing vaporized refrigerant to escape upwardly from the liquid refrigerant; and a refrigerant discharge conduit penetrating sealingly through the top and traversing substantially the length of the pressurized vessel downwardly and upwardly such that its inlet is near the top of the pressurized vessel so as to provide a means for transporting refrigerant vapor from the vessel. The refrigerant discharge conduit has metering orifices, or passageways, penetrating laterally through its walls near the bottom, communicating respectively interiorly and exteriorly of the overflow chamber for controllably carrying small amounts of liquid refrigerant and oil to the effluent stream of refrigerant gas.

Ecker, Amir L. (Dallas, TX)

1980-01-01T23:59:59.000Z

36

Ion exchange technology assessment report  

SciTech Connect

In the execution of its charter, the SRS Ion Exchange Technology Assessment Team has determined that ion exchange (IX) technology has evolved to the point where it should now be considered as a viable alternative to the SRS reference ITP/LW/PH process. The ion exchange media available today offer the ability to design ion exchange processing systems tailored to the unique physical and chemical properties of SRS soluble HLW's. The technical assessment of IX technology and its applicability to the processing of SRS soluble HLW has demonstrated that IX is unquestionably a viable technology. A task team was chartered to evaluate the technology of ion exchange and its potential for replacing the present In-Tank Precipitation and proposed Late Wash processes to remove Cs, Sr, and Pu from soluble salt solutions at the Savannah River Site. This report documents the ion exchange technology assessment and conclusions of the task team.

Duhn, E.F.

1992-01-01T23:59:59.000Z

37

Ion exchange technology assessment report  

SciTech Connect

In the execution of its charter, the SRS Ion Exchange Technology Assessment Team has determined that ion exchange (IX) technology has evolved to the point where it should now be considered as a viable alternative to the SRS reference ITP/LW/PH process. The ion exchange media available today offer the ability to design ion exchange processing systems tailored to the unique physical and chemical properties of SRS soluble HLW`s. The technical assessment of IX technology and its applicability to the processing of SRS soluble HLW has demonstrated that IX is unquestionably a viable technology. A task team was chartered to evaluate the technology of ion exchange and its potential for replacing the present In-Tank Precipitation and proposed Late Wash processes to remove Cs, Sr, and Pu from soluble salt solutions at the Savannah River Site. This report documents the ion exchange technology assessment and conclusions of the task team.

Duhn, E.F.

1992-12-31T23:59:59.000Z

38

basic exchange telecommunications radio service  

Science Journals Connector (OSTI)

A service that extends telecommunications service to rural, outlying, and remote...Common abbreviation BETRS. Note: In the basic exchange telecommunications radio service (BETRS), the (a)....

2001-01-01T23:59:59.000Z

39

A Challenging Solar Eruptive Event of 18 November 2003 and the Causes of the 20 November Geomagnetic Superstorm. III. Catastrophe of the Eruptive Filament in a Magnetic Null Point and Formation of an Opposite-Handedness CME  

E-Print Network (OSTI)

Our analysis in Papers I and II (Grechnev et al., 2014, Solar Phys. 289, 289 and 1279) of the 18 November 2003 solar event responsible for the 20 November geomagnetic superstorm has revealed a complex chain of eruptions. In particular, the eruptive filament encountered a topological discontinuity located near the solar disk center at a height of about 100 Mm, bifurcated, and transformed into a large cloud, which did not leave the Sun. Concurrently, an additional CME presumably erupted close to the bifurcation region. The conjectures about the responsibility of this compact CME for the superstorm and its disconnection from the Sun are confirmed in Paper IV (Grechnev et al., Solar Phys., submitted), which concludes about its probable spheromak-like structure. The present paper confirms the presence of a magnetic null point near the bifurcation region and addresses the origin of the magnetic helicity of the interplanetary magnetic clouds and their connection to the Sun. We find that the orientation of a magnetic...

Uralov, A M; Rudenko, G V; Myshyakov, I I; Chertok, I M; Filippov, B P; Slemzin, V A

2014-01-01T23:59:59.000Z

40

Neutron-Proton Exchange Demonstrated  

Science Journals Connector (OSTI)

Neutron-Proton Exchange Demonstrated ... EVIDENCE of the exchange of charge between protons and neutrons has recently been obtained from studies in the high power cyclotron, according to Ernest O. Lawrence, professor of physics at the University of California a* Berkeley. ...

1947-11-03T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Technology Performance Exchange (Fact Sheet)  

SciTech Connect

This fact sheet, 'The Technology Performance Exchange' will be presented at the ET Summit, held at the Pasadena Convention Center on October 15-17, 2012. The Technology Performance Exchange will be a centralized, Web-based portal for finding and sharing energy performance data for commercial building technologies.

Not Available

2012-10-01T23:59:59.000Z

42

Gas Exchange, Partial Pressure Gradients,  

E-Print Network (OSTI)

Gas Exchange, Partial Pressure Gradients, and the Oxygen Window Johnny E. Brian, Jr., M of circulatory and gas transport physiology, and the best place to start is with normobaric physiology. LIFE affect the precise gas exchange occurring in individual areas of the lungs and body tissues. To make

Riba Sagarra, Jaume

43

Modular heat exchanger  

DOE Patents (OSTI)

A shell and tube heat exchanger having a plurality of individually removable tube bundle modules. A lattice of structural steel forming rectangular openings therein is placed at each end of a cylindrical shell. Longitudinal structural members are placed in the shell between corners of the rectangular openings situated on opposite ends of the shell. Intermediate support members interconnect the longitudinal supports so as to increase the longitudinal supports rigidity. Rectangular parallelpiped tube bundle moldules occupy the space defined by the longitudinal supports and end supports and each include a rectangular tube sheet situated on each end of a plurality of tubes extending therethrough, a plurality of rectangular tube supports located between the tube sheets, and a tube bundle module stiffening structure disposed about the bundle's periphery and being attached to the tube sheets and tube supports. The corners of each tube bundle module have longitudinal framework members which are mateable with and supported by the longitudinal support members. Intermediate support members constitute several lattice, each of which is situate d in a plane between the end support members. The intermediate support members constituting the several lattice extend horizontally and vertically between longitudinal supports of adjacent tube module voids. An alternative embodiment for intermediate support members constitute a series of structural plates situated at the corners of the module voids and having recesses therein for receiving the respective longitudinal support members adjacent thereto, protrusions separating the recesses, and a plurality of struts situated between protrusions of adjacent structural plates.

Giardina, Angelo R. [Marple Township, Delaware County, PA

1981-03-03T23:59:59.000Z

44

Worldwide 'Power exchanges' | OpenEI Community  

Open Energy Info (EERE)

Indian government is attempting to set-up power exchang, where one can buysell electrical power (just like stock exchange). Please let me know: If power exchange exists in...

45

Heat exchanger with ceramic elements  

DOE Patents (OSTI)

An annular heat exchanger assembly includes a plurality of low thermal growth ceramic heat exchange members with inlet and exit flow ports on distinct faces. A mounting member locates each ceramic member in a near-annular array and seals the flow ports on the distinct faces into the separate flow paths of the heat exchanger. The mounting member adjusts for the temperature gradient in the assembly and the different coefficients of thermal expansion of the members of the assembly during all operating temperatures.

Corey, John A. (North Troy, NY)

1986-01-01T23:59:59.000Z

46

Energy Efficiency Exchange 2015 | Department of Energy  

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

Energy Efficiency Exchange 2015 Energy Efficiency Exchange 2015 As the nation's largest energy consumer, the federal government has a tremendous opportunity and clear...

47

Materials - Micro heat exchangers ... | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Materials - Micro heat exchangers ... Heat exchanger components fabricated with 3-D printing and analyzed with neutron imaging create a world of opportunities for electronic...

48

Integrated Module Heat Exchanger | Department of Energy  

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

Module Heat Exchanger Integrated Module Heat Exchanger 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting...

49

Better Buildings Residential Network Orientation Peer Exchange...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Better Buildings Residential Network Orientation Peer Exchange Webinar Better Buildings Residential Network Orientation Peer Exchange Webinar September 11, 2014 7:00PM to 8:3...

50

Grafted methylenediphosphonate ion exchange resins  

DOE Patents (OSTI)

An ion exchange resin is disclosed that is comprised of an insoluble copolymer onto which are grafted pendent groups that provide 1.0 to about 10 mmol/g dry weight phosphorous. The pendent groups have the formula ##STR1## wherein R is hydrogen, a cation or mixtures thereof; and R.sup.1 is hydrogen or an C.sub.1 -C.sub.2 alkyl group. The resin also contains zero to about 5 mmol/g dry weight of pendent aromatic sulfonate groups. Processes for making and using an ion exchange resin are also disclosed.

Trochimcznk, Andrzej W. (Knoxbille, TN); Gatrone, Ralph C. (Plymouth, PA); Alexandratos, Spiro (Knoxville, TN); Horwitz, E. Philip (Naperville, IL)

1997-01-01T23:59:59.000Z

51

Grafted methylenediphosphonate ion exchange resins  

DOE Patents (OSTI)

An ion exchange resin is disclosed that is comprised of an insoluble copolymer onto which are grafted pendent groups that provide 1.0 to about 10 mmol/g dry weight phosphorous. The pendent groups have the formula ##STR1## wherein R is hydrogen, a cation or mixtures thereof; and R.sup.1 is hydrogen or an C.sub.1 -C.sub.2 alkyl group. The resin also contains zero to about 5 mmol/g dry weight of pendent aromatic sulfonate groups. Processes for making and using an ion exchange-resin are also disclosed.

Trochimcznk, Andrzej W. (Knoxville, TN); Gatrone, Ralph C. (Plymouth, PA); Alexandratos, Spiro (Knoxville, TN); Horwitz, E. Philip (Naperville, IL)

1998-01-27T23:59:59.000Z

52

Softhard exchange-coupled layered structures with modulated exchange coupling  

E-Print Network (OSTI)

, Tuscaloosa, Alabama 35487-0209 Received 8 April 2003; accepted 28 June 2003 Magnetically soft/hard exchange-coupled for high performance permanent magnets in the past decades and much progress has been made in improving permanent mag- netic properties. A figure of merit of permanent magnetic materials is the maximum magnetic

Garmestani, Hamid

53

Morphology of Ion Exchange Membranes  

Science Journals Connector (OSTI)

......the HjO,- treatment of the ion exchange...and rinsed with water. After drying...Determined in sea water at 25 C by electrodialysis. Fig. 2. Neosepta...with deionized water, treated with...prepared by the treatment of the cation......

Yoshikazu HORI; Toru NAKATANI; Yukio MIZUTANI

1986-10-01T23:59:59.000Z

54

Primer on nuclear exchange models  

SciTech Connect

Basic physics is applied to nuclear force exchange models between two nations. Ultimately, this scenario approach can be used to try and answer the age old question of 'how much is enough?' This work is based on Chapter 2 of Physics of Societal Issues: Calculations on National Security, Environment and Energy (Springer, 2007 and 2014)

Hafemeister, David [Physics Department, Cal Poly University, San Luis Obispo, California (United States)

2014-05-09T23:59:59.000Z

55

Heat Exchanger Fouling- Prediction, Measurement and Mitigation  

E-Print Network (OSTI)

The U. S. Department of Energy (DOE), Office of Industrial Programs (OIP) sponsors the development of innovative heat exchange systems. Fouling is a major and persistent cost associated with most industrial heat exchangers and nationally wastes...

Peterson, G. R.

56

SPR - Historical Oil Sales and Exchanges | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

- Historical Oil Sales and Exchanges SPR - Historical Oil Sales and Exchanges SPR - Historical Oil Sales and Exchanges More Documents & Publications SPR Annual Reports to Congress...

57

Thermohydraulic Simulation of Heat Exchanger Networks  

Science Journals Connector (OSTI)

The determination of network temperatures is carried out together with the evaluation of flow rates and pressures along the network, considering head losses in heat exchangers and associated piping. ... The HEN responsible to distribute cooling water in an industrial unit is composed by three heat exchangers in parallel. ... However, the cooling water distribution among the three exchangers presents a considerable unbalance, where heat exchanger E-101 receives much less cooling water than the design specification. ...

Viviane B. G. Tavares; Eduardo M. Queiroz; Andre? L. H. Costa

2010-04-26T23:59:59.000Z

58

THE EXCHANGE RATE-INVESTMENT NEXUS AND EXCHANGE RATE INSTABILITY: ANOTHER REASON FOR `FEAR OF FLOATING'  

E-Print Network (OSTI)

THE EXCHANGE RATE-INVESTMENT NEXUS AND EXCHANGE RATE INSTABILITY: ANOTHER REASON FOR `FEAR repercussion comes through the reaction of firms to changed asset prices and the firms' decisions to invest: F31, F32 *Corresponding author 1 #12;THE EXCHANGE RATE-INVESTMENT NEXUS AND EXCHANGE RATE

Ahmad, Sajjad

59

EXCHANGE:  

Science Journals Connector (OSTI)

......Automatic Sampler A 7-page brochure describes the Shimadzu AOC-6, a syringe-type automatic sampler designed to automate...sampling, measurement, and injection, A system composed of an AOC-6 GC and an integrator provides completely automated GC. Features......

Exchange

1976-07-01T23:59:59.000Z

60

Ion exchange purification of scandium  

DOE Patents (OSTI)

An improvement in purification of scandium through ion exchange chromatography is disclosed in which the oxidation potential of the eluting solution is altered by the addition of potassium chlorate or ammonium chloride so that removal of contaminants is encouraged. The temperature, pH and concentration of the eluent HEDTA are controlled in order to maintain the scandium in the column while minimizing dilution of the scandium band. Recovery of scandium is improved by pumping dilute scandium over the column prior to stripping the scandium and precipitation. This eliminates the HEDTA ion and other monovalent cations contaminating the scandium band. This method maximizes recovery of scandium while maintaining purity. 2 figs.

Herchenroeder, L.A.; Burkholder, H.R.

1990-10-23T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

DHE (downhole heat exchangers). [Downhole Heat Exchangers (DHE)  

SciTech Connect

The use of downhole heat exchangers (DHE) for residential or commercial space and domestic water heating and other applications has several desirable features. Systems are nearly or completely passive -- that is, no or very little geothermal water or steam is produced from the well either reducing or completely eliminating surface environmental concerns and the need for disposal systems or injection wells. Initial cost of pumps and installation are eliminated or reduced along with pumping power costs and maintenance costs associated with pumping often corrosive geothermal fluids. Many residential and small commercial systems do not require circulating pumps because the density difference in the incoming and outgoing sides of the loop are sufficient to overcome circulating friction losses in the entire system. The major disadvantage of DHEs is their dependence on natural heat flow. In areas where geological conditions provide high permeability and a natural hydraulic gradient, DHEs can provide a substantial quantity of heat. A single 500-ft (152 m) well in Klamath Falls, Oregon, supplies over one megawatt thermal and output is apparently limited by the surface area of pipe that can be installed in the well bore. In contrast, DHEs used in conjunction with heat pumps may supply less than 8 KW from a well of similar depth. Here output is limited by conductive heat flow with perhaps a small contribution from convection near the well bore. The highest capacity DHE reported to date, in Turkey, supplies 6 MW thermal from an 820-ft (250 m) well. There were two main goals for this project. The first was to gather, disseminate and exchange internationally information on DHES. The second was to perform experiments that would provide insight into well bore/aquifer interaction and thereby provide more information on which to base DHE designs. 27 refs., 31 figs., 3 tabs.

Culver, G.

1990-11-01T23:59:59.000Z

62

Exchange Fluctuation Theorem for correlated quantum systems  

E-Print Network (OSTI)

We extend the Exchange Fluctuation Theorem for energy exchange between thermal quantum systems beyond the assumption of molecular chaos, and describe the non-equilibrium exchange dynamics of correlated quantum states. The relation quantifies how the tendency for systems to equilibrate is modified in high-correlation environments. Our results elucidate the role of measurement disturbance for such scenarios. We show a simple application by finding a semi-classical maximum work theorem in the presence of correlations.

Sania Jevtic; David Jennings; Terry Rudolph; Yuji Hirono; Shojun Nakayama; Mio Murao

2014-12-04T23:59:59.000Z

63

NETL's Energy Data eXchange  

ScienceCinema (OSTI)

A brief tour around NETL's Energy Data Exchange site, where researchers can upload data or look at data from another researcher.

None

2014-07-22T23:59:59.000Z

64

COMPACT HEAT EXCHANGERS FOR CONDENSATION APPLICATIONS: YESTERDAY...  

Office of Scientific and Technical Information (OSTI)

or allow other to do so, for U. S. Government purposes, i I ABSTRACT Compact heat exchangers are being increasinglyconsidered for condensationapplications in the...

65

Heat transfer and heat exchangers reference handbook  

SciTech Connect

The purpose of this handbook is to provide Rocky Flats personnel with an understanding of the basic concepts of heat transfer and the operation of heat exchangers.

Not Available

1991-01-15T23:59:59.000Z

66

"Heat Exchange Enhancing Insert" Inventors .--.. Andrei Khodak...  

NLE Websites -- All DOE Office Websites (Extended Search)

Heat Exchange Enhancing Insert" Inventors .--.. Andrei Khodak, Michael A. Jaworski A new shape of the heat enhancing insert is proposed. This device creates an impinging jet...

67

Technology Performance Exchange | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Performance Exchange Performance Exchange Technology Performance Exchange A collaboration between the U.S. Department of Energy's (DOE's) Federal Energy Management Program Office and the Building Technologies Office, the Technology Performance Exchange will establish a Web-based portal and accompanying database that allows technology suppliers to submit product performance data that private and public sector end users can use to make fact-based procurement decisions. Suppliers will populate the database with technologies that affect building activities, including construction, commissioning, maintenance, monitoring, equipment, and verification. This project will help the U.S. energy efficiency technology market by providing objective product performance data to building engineers and

68

Quality Assurance Exchange August 2012  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

With the help of dedicated quality With the help of dedicated quality professionals across the complex and beyond, I am pleased to announce that this issue of the Quality Assurance Exchange (QAE) newsletter focuses on hard hitting issues, as well as opportunities to explore abatement methods in regards to our quality assurance (QA) challenges. Within, you will find a brief discussion on the Department of Energy (DOE) Federal Quality Council and its Calendar Year 2011 accomplishments; an exploration of Safety Software QA activities including an overview of the annual meeting; an update on the Safety Software Communication Forum; and activities surrounding new and upcoming guides and systems. Also, you will get an inside look on the Differing Professional Opinions Process; read an exclusive interview

69

Building Energy Data Exchange Specification Scoping Report  

Energy.gov (U.S. Department of Energy (DOE))

Building Energy Data Exchange Specification Scoping Report. The Building Energy Data Exchange Specification (BEDES), developed by DOE, is a uniform format is intended to make it easier for external stakeholders to use DOE tools, streamline reporting for DOE programs, and help unlock the full utility of the data that the DOE collects.

70

Cryogenic heat exchanger with turbulent flows  

Science Journals Connector (OSTI)

An evaporator-type cryogenic heat exchanger is designed and built for introducing fluidsolid heat exchange phenomena to undergraduates in a practical and efficient way. The heat exchanger functions at liquid nitrogen temperature and enables cooling of N2and He gases from room temperatures. We present first the experimental results of various parameters which characterize the heat exchanger (efficiency, number of transfer units, heat exchange coefficient, etc) as a function of the mass flow rate of the gas to be cooled. An analysis of the NuRe diagram is also presented. All experiments were conducted with N2gas. The scope of this tool is readily extended to research purposes.

Jay Amrit; Christelle Douay; Francis Dubois; Grard Defresne

2012-01-01T23:59:59.000Z

71

Korea Power Exchange (KPX) | Open Energy Information  

Open Energy Info (EERE)

Exchange (KPX) Exchange (KPX) Jump to: navigation, search Logo: Korea Power Exchange (KPX) Name Korea Power Exchange (KPX) Agency/Company /Organization Argonne National Laboratory Sector Energy Focus Area Energy Efficiency Topics Background analysis Website http://www.dis.anl.gov/news/Ko Country South Korea Eastern Asia References http://www.dis.anl.gov/news/KoreaKpxIit.html Abstract In an agreement signed on March 26, 2007, Argonne National Laboratory and the Illinois Institute of Technology are joining with the Korea Power Exchange to establish a joint training program combining training and research at Argonne with formal academic education at IIT. Argonne-IIT Joint Graduate Program in Electricity Markets: In an agreement signed on March 26, 2007, Argonne National Laboratory and the Illinois

72

Industrial Plate Exchangers Heat Recovery and Fouling  

E-Print Network (OSTI)

by choosing a more suitable material of construction. Plate exchangers being economic on surface area are able to use materials such as stainless steels, titanium,hastelloy,incolloy etc.without excessive cost. Normally the more e~pensive the material... it to the plate exchanger which is easy to open and clean. During the late sixties the first plate heat exchangers were used for acid cooling direct. These had plates of Hastelloy C and gaskets of Viton rubber. These were generally restricted to an acid...

Cross, P. H.

1981-01-01T23:59:59.000Z

73

Electrically Controlled Anion Exchange Based on Polypyrrole and...  

NLE Websites -- All DOE Office Websites (Extended Search)

Controlled Anion Exchange Based on Polypyrrole and Carbon Nanotubes Nanocomposite for Perchlorate Removal . Electrically Controlled Anion Exchange Based on Polypyrrole and Carbon...

74

2012 National Trainers' Exchange for Department of Energy Safety...  

Office of Environmental Management (EM)

2012 National Trainers' Exchange for Department of Energy Safety and Health Trainers 2012 National Trainers' Exchange for Department of Energy Safety and Health Trainers Workshop...

75

Exploration Best Practices and the OpenEI Knowledge Exchange...  

Energy Savers (EERE)

Exchange Webinar Exploration Best Practices and the OpenEI Knowledge Exchange Webinar slide presentation by Katherine Young, Timothy Reber and Kermit Witherbee on April 11, 2012....

76

Journal Article: Gate-tunable exchange coupling between cobalt...  

Office of Scientific and Technical Information (OSTI)

Gate-tunable exchange coupling between cobalt clusters on graphene Citation Details Title: Gate-tunable exchange coupling between cobalt clusters on graphene Authors: Chen, Hua;...

77

Technology Performance Exchange - 2014 BTO Peer Review | Department...  

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

Technology Performance Exchange - 2014 BTO Peer Review Technology Performance Exchange - 2014 BTO Peer Review Project Objective This project's overall goal is to ensure that...

78

Heat Exchanger Design for Solar Gas-Turbine Power Plant.  

E-Print Network (OSTI)

?? The aim of this project is to select appropriate heat exchangers out of available gas-gas heat exchangers for used in a proposed power plant. (more)

Yakah, Noah

2012-01-01T23:59:59.000Z

79

Better Buildings Residential Network: Lessons Learned: Peer Exchange...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Network: Lessons Learned: Peer Exchange Calls Better Buildings Residential Network: Lessons Learned: Peer Exchange Calls Better Buildings Residential Network: Lessons Learned: Peer...

80

Energy Technology Data Exchange | Open Energy Information  

Open Energy Info (EERE)

Exchange Exchange Jump to: navigation, search Logo: Energy Technology Data Exchange Name Energy Technology Data Exchange Address P.O. Box 62 Place Oak Ridge, Tennessee Zip 37831 Year founded 1987 Phone number 865 576 1272 Coordinates 36.0103°, -84.2698° 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":36.0103,"lon":-84.2698,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Office of Waste Processing Technical Exchange  

NLE Websites -- All DOE Office Websites (Extended Search)

Agenda Hotel Register Contacts Event Media Speaker Information Home Agenda Hotel Register Contacts Event Media Speaker Information Home Environmental Management Waste Processing Technical Exchange 2010 in Atlanta, GA, November 16 - 18. Over the past eight years, personnel from the three sites, Savannah River/Hanford/Idaho along with others receiving funding from the Environmental Management Office of Waste Processing have met to exchange recent results of on-going field operations and technology development. The purpose of this exchange is to provide a forum for discussion of each Site's efforts to accelerate cleanup operations. Keys to success and lessons learned are openly exchanged in a manner to allow for open discussion between operations, engineering and scientists to accelerate transition of technologies from concepts to field implementation.

82

The MRSEC-Chile Exchange Jordan Weil  

E-Print Network (OSTI)

The MRSEC-Chile Exchange Program Jordan Weil Special Thanks to Professor Witten and Melva Smith #12 is: jordan.weil@colorado.edu Professor Witten's webpage: http://jfi.uchicago.edu/~tten/Chile/ #12;

Witten, Thomas A.

83

Condensing Heat Exchangers Optimize Steam Boilers  

E-Print Network (OSTI)

The development of fluorocarbon resin covered tubes has advanced to the point where full scale marketing in connection with condensing heat exchangers has begun. Field installations show simple paybacks of one to one and a half years with resulting...

Sullivan, B.; Sullivan, P. A.

1983-01-01T23:59:59.000Z

84

Antiferromagnetic domain size and exchange bias  

E-Print Network (OSTI)

Using neutron diffraction, we measured the sizes of antiferromagnetic domains in three ferromagnet/antiferromagnet bilayer samples as a function of the magnitude and sign of exchange bias, temperature, and antiferromagnet composition. Neutron...

Fitzsimmons, M. R.; Lederman, D.; Cheon, M.; Shi, H.; Olamit, J.; Roshchin, Igor V.; Schuller, Ivan K.

2008-01-01T23:59:59.000Z

85

Duality and ?N charge-exchange data  

Science Journals Connector (OSTI)

A previous analysis of ?-p charge-exchange data, using the two-component duality hypothesis and fixed-t dispersion relations, is updated to include recent polarization measurements and high-statistics differential cross sections.

R. C. E. Devenish and B. R. Martin

1974-07-01T23:59:59.000Z

86

EMU and Transatlantic Exchange Rate Stability  

Science Journals Connector (OSTI)

The macroeconomic debate about EMU has always focused on the costs and the benefits of suppressing exchange rates between the participating countries. These costs and benefits actually depend on whether the excha...

Agns Bnassy-Qur; Benot Mojon

2001-01-01T23:59:59.000Z

87

Adaptive systems for foreign exchange trading  

E-Print Network (OSTI)

, Cambridge, and Dr Mark Austin and Dr Stacy Williams, both of HSBC Global Markets, outline the results- niques in foreign exchange markets for a number of years. Over 18 months a joint project with HSBC Global

Fernandez, Thomas

88

Building Technologies Office: HVAC Optimized Heat Exchangers Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Optimized Heat Optimized Heat Exchangers Research Project to someone by E-mail Share Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Facebook Tweet about Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Twitter Bookmark Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Google Bookmark Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Delicious Rank Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Digg Find More places to share Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research Building Envelope Research

89

Building Technologies Office: Building Energy Data Exchange Specification  

NLE Websites -- All DOE Office Websites (Extended Search)

Building Energy Data Building Energy Data Exchange Specification to someone by E-mail Share Building Technologies Office: Building Energy Data Exchange Specification on Facebook Tweet about Building Technologies Office: Building Energy Data Exchange Specification on Twitter Bookmark Building Technologies Office: Building Energy Data Exchange Specification on Google Bookmark Building Technologies Office: Building Energy Data Exchange Specification on Delicious Rank Building Technologies Office: Building Energy Data Exchange Specification on Digg Find More places to share Building Technologies Office: Building Energy Data Exchange Specification on AddThis.com... About Take Action to Save Energy Activities 179d Tax Calculator Advanced Energy Design Guides Advanced Energy Retrofit Guides

90

Effects of ionizing radiation on modern ion exchange materials  

SciTech Connect

We review published studies of the effects of ionizing radiation on ion exchange materials, emphasizing those published in recent years. A brief overview is followed by a more detailed examination of recent developments. Our review includes styrene/divinylbenzene copolymers with cation-exchange or anion-exchange functional groups, polyvinylpyridine anion exchangers, chelating resins, multifunctional resins, and inorganic exchangers. In general, strong-acid cation exchange resins are more resistant to radiation than are strong-base anion exchange resins, and polyvinylpyridine resins are more resistant than polystyrene resins. Cross-linkage, salt form, moisture content, and the surrounding medium all affect the radiation stability of a specific exchanger. Inorganic exchangers usually, but not always, exhibit high radiation resistance. Liquid ion exchangers, which have been used so extensively in nuclear processing applications, also are included.

Marsh, S.F.; Pillay, K.K.S.

1993-10-01T23:59:59.000Z

91

Heat Exchangers for Solar Water Heating Systems | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Heat Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems May 30, 2012 - 3:40pm Addthis Image of a heat exchanger. | Photo from iStockphoto.com Image of a heat exchanger. | Photo from iStockphoto.com Solar water heating systems use heat exchangers to transfer solar energy absorbed in solar collectors to the liquid or air used to heat water or a space. Heat exchangers can be made of steel, copper, bronze, stainless steel, aluminum, or cast iron. Solar heating systems usually use copper, because it is a good thermal conductor and has greater resistance to corrosion. Types of Heat Exchangers Solar water heating systems use three types of heat exchangers: Liquid-to-liquid A liquid-to-liquid heat exchanger uses a heat-transfer fluid that

92

Charge exchange reaction by Reggeon exchange and W$^{+}$W$^{-}$-fusion  

E-Print Network (OSTI)

Charge exchange reactions at high energies are examined. The existing cross section data on the Reggeon induced reaction pp $\\rightarrow$ n + $\\Delta^{++}$ taken at the ZGS and ISR accelerators are extrapolated to the energies of the RHIC and LHC colliders. The interest in the charge exchange reaction induced by $W^{\\pm}$-fusion is presented, and the corresponding QCD-background is examined.

Schicker, R

2014-01-01T23:59:59.000Z

93

Nominal exchange rate pegging, escape clauses and targeting of the real exchange rate  

E-Print Network (OSTI)

We consider an economy under a fixed exchange rate system, but with bounds (a minimum level or a band) on the real exchange rate. The international price of the tradable good is characterized by the continuous arrival of shocks that change its level...

Gonzalez, Pablo

2006-08-16T23:59:59.000Z

94

Performance Assessment Community of Practice Technical Exchange  

NLE Websites -- All DOE Office Websites (Extended Search)

The Department of Energy is hosting a Technical Exchange at the Hanford Site on The Department of Energy is hosting a Technical Exchange at the Hanford Site on April 13-14, 2010. The Performance Assessment Community of Practice has been chartered to advise the Office of Environmental Management Tank Waste Corporate Board regarding performance assessments and performance assessment-like analyses, promote consistency in the preparation of performance assessments across the Department of Energy (DOE) complex, foster exchange of information among performance assessment practitioners, and develop appropriate guidance for performance assessments such that they are based on sound science and are defensible. The purpose of this technical exchange is to provide a venue for performance assessment and risk assessment practitioners, managers and regulators, and contributors to the Cementitious Barriers Partnership and Advanced Simulation Capability for Environmental Management project to share plans and experiences and share ideas for future performance assessment and risk assessment modeling. The technical exchange will include a combination of plenary presentations and discussions with breakout sessions for specific topics. Discussions will emphasize areas for improved consistency and solicit suggestions for future developments related to modeling tools. A breakout discussion session is also planned to address: DOE Order 435.1 Update, regulatory challenges for performance and risk assessment modeling, and other topical areas. Arrangements have also been made for a GoldSim modeling roundtable at the conclusion of the workshop for participants who are interested in sharing experiences related to the use of GoldSim for their simulations.

95

Definition: Heat exchanger | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Heat exchanger Jump to: navigation, search Dictionary.png Heat exchanger A device for transferring thermal energy (heat) from one fluid (liquid or gas) to another, when the two fluids are physically separated; such as a radiator.[1][2] View on Wikipedia Wikipedia Definition A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. The media may be separated by a solid wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power plants, chemical plants, petrochemical plants, petroleum refineries [bp, shell, sasol], natural gas processing, and sewage treatment. The classic example

96

Modeling particle deposition on HVAC heat exchangers  

SciTech Connect

Fouling of fin-and-tube heat exchangers by particle deposition leads to diminished effectiveness in supplying ventilation and air conditioning. This paper explores mechanisms that cause particle deposition on heat exchanger surfaces. We present a model that accounts for impaction, diffusion, gravitational settling, and turbulence. Simulation results suggest that some submicron particles deposit in the heat exchanger core, but do not cause significant performance impacts. Particles between 1 and 10 {micro}m deposit with probabilities ranging from 1-20% with fin edge impaction representing the dominant mechanism. Particles larger than 10 {micro}m deposit by impaction on refrigerant tubes, gravitational settling on fin corrugations, and mechanisms associated with turbulent airflow. The model results agree reasonably well with experimental data, but the deposition of larger particles at high velocities is underpredicted. Geometric factors, such as discontinuities in the fins, are hypothesized to be responsible for the discrepancy.

Siegel, J.A.; Nazaroff, W.W.

2002-01-01T23:59:59.000Z

97

Heat exchanger for coal gasification process  

DOE Patents (OSTI)

This invention provides a heat exchanger, particularly useful for systems requiring cooling of hot particulate solids, such as the separated fines from the product gas of a carbonaceous material gasification system. The invention allows effective cooling of a hot particulate in a particle stream (made up of hot particulate and a gas), using gravity as the motive source of the hot particulate. In a preferred form, the invention substitutes a tube structure for the single wall tube of a heat exchanger. The tube structure comprises a tube with a core disposed within, forming a cavity between the tube and the core, and vanes in the cavity which form a flow path through which the hot particulate falls. The outside of the tube is in contact with the cooling fluid of the heat exchanger.

Blasiole, George A. (Greensburg, PA)

1984-06-19T23:59:59.000Z

98

Natural Gas Weekly Update, Printer-Friendly Version  

Gasoline and Diesel Fuel Update (EIA)

Tuesday morning by the attacks on the World Trade Center (WTC) and the Pentagon. The New York Mercantile Exchange (NYMEX), located within four blocks of the WTC, closed almost...

99

Cheese Prices  

E-Print Network (OSTI)

Cheese prices are derived from the USDA Agricultural Marketing Service Market News, the National Agricultural Statistics Service, and the Chicago Mercantile Exchange. This publication explains the process of cheese pricing. It includes information...

Schwart Jr., Robert B.; Anderson, David P.; Knutson, Ronald D.

2003-08-25T23:59:59.000Z

100

This Week In Petroleum Printer-Friendly Version  

Gasoline and Diesel Fuel Update (EIA)

prices, the New York Mercantile Exchange (NYMEX) reported the largest ever one-day rise in crude oil futures prices totaling more than 4 per barrel. This situation clearly...

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Bifunctional anion-exchange resins with improved selectivity and exchange kinetics  

DOE Patents (OSTI)

Disclosed herein are a class of anion exchange resins containing two different exchange sites with improved selectivity and sorptive capability for chemical species in solution, such as heptavalent technetium (as pertechnetate anion, TcO.sub.4.sup.-). The resins are prepared by first reacting haloalkylated crosslinked copolymer beads with a large tertiary amine in a solvent in which the resin beads can swell, followed by reaction with a second, smaller, tertiary amine to more fully complete the functionalization of the resin. The resins have enhanced selectivity, capacity, and exchange kinetics.

Alexandratos, Spiro D. (Knoxville, TN); Brown, Gilbert M. (Knoxville, TN); Bonnesen, Peter V. (Knoxville, TN); Moyer, Bruce A. (Oak Ridge, TN)

2000-01-01T23:59:59.000Z

102

Plant physiology Stomatal movements and gas exchanges  

E-Print Network (OSTI)

medium, Triticum df had a better water-use efficiency than T300 and rye. On the contrary, in the nutrient solution, T300 had a better water-use efficiency than its parental species. Under water stress, water loss exchange were lower than in control plants. stomata / water-use efficiency / osmotic stress / triticale

Paris-Sud XI, Université de

103

Ion exchange polymers for anion separations  

DOE Patents (OSTI)

Anion exchange resins including at least two positively charged sites and a well-defined spacing between the positive sites are provided together with a process of removing anions or anionic metal complexes from aqueous solutions by use of such resins. The resins can be substituted poly(vinylpyridine) and substituted polystyrene.

Jarvinen, G.D.; Marsh, S.F.; Bartsch, R.A.

1997-09-23T23:59:59.000Z

104

Ion exchange polymers for anion separations  

DOE Patents (OSTI)

Anion exchange resins including at least two positively charged sites and a ell-defined spacing between the positive sites are provided together with a process of removing anions or anionic metal complexes from aqueous solutions by use of such resins. The resins can be substituted poly(vinylpyridine) and substituted polystyrene.

Jarvinen, Gordon D. (Los Alamos, NM); Marsh, S. Fredric (Los Alamos, NM); Bartsch, Richard A. (Lubbock, TX)

1997-01-01T23:59:59.000Z

105

COMMODITY PRICE VOLATILITY ACROSS EXCHANGE RATE REGIMES  

E-Print Network (OSTI)

1 COMMODITY PRICE VOLATILITY ACROSS EXCHANGE RATE REGIMES John T. Cuddington* and Hong Liang** March 10, 2003 ABSTRACT This paper documents a new "stylized fact" regarding the relative price 1880 to 1996, this key relative price among two categories of tradable goods is shown to exhibit

106

The Path Exchange Method for Hybrid LCA  

Science Journals Connector (OSTI)

The Path Exchange Method for Hybrid LCA ... A new Hybrid LCA method based on Structural Path Analysis is developed, which is less labor- and data-intensive than previous approaches. ... Hybrid techniques for Life-Cycle Assessment (LCA) provide a way of combining the accuracy of process analysis and the completeness of input?output analysis. ...

Manfred Lenzen; Robert Crawford

2009-09-24T23:59:59.000Z

107

MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS  

E-Print Network (OSTI)

LBNL-49339 MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS J.A. Siegel1,3 * and W.W. Nazaroff2 Department of Energy under contract DE-AC03-76SF00098. #12;MODELING PARTICLE DEPOSITION ON HVAC HEAT, such as discontinuities in the fins, are hypothesized to be responsible for the discrepancy. INDEX TERMS HVAC, Fouling

108

Pion double charge exchange and hadron dynamics  

SciTech Connect

This paper will review theoretical results to show how pion double charge exchange is contributing to our understanding of hadron dynamics in nuclei. The exploitation of the nucleus as a filter is shown to be essential in facilitating the comparison between theory and experiment. 23 refs., 3 figs., 2 tabs.

Johnson, M.B.

1991-01-01T23:59:59.000Z

109

Program Sustainability: Update on Revenue Strategies Peer Exchange...  

Office of Environmental Management (EM)

Program Sustainability: Update on Revenue Strategies Peer Exchange Call Program Sustainability: Update on Revenue Strategies Peer Exchange Call December 11, 2014 12:30PM to 2:0...

110

Energy Efficiency Exchange 2015 Schedule | Department of Energy  

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

Schedule Energy Efficiency Exchange 2015 Schedule The schedule for Energy Efficiency Exchange 2015 is available below. Monday, August 10, 2015 12 p.m.-5:30 p.m. Registration...

111

Quality Assurance Exchange June 2006, Volume 2 Issue 2 | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

June 2006, Volume 2 Issue 2 Quality Assurance Exchange June 2006, Volume 2 Issue 2 Quality Assurance Exchange June 2006, Volume 2 Issue 2 U.S. Department of Energy, Office of...

112

Kitchen Appliance Upgrades Improve Water Efficiency at DOD Exchange Facilities  

Energy.gov (U.S. Department of Energy (DOE))

Case study details the Exchange (formerly the Army and Air Force Exchange Service), which took a leadership role in kitchen appliance upgrades to improve water efficiency by integrating water efficiency concepts into the organization's overall sustainability plan and objectives.

113

Sandwhiched Orb/Grid Heat Exchanger | Princeton Plasma Physics...  

NLE Websites -- All DOE Office Websites (Extended Search)

Sandwhiched OrbGrid Heat Exchanger The design basis of the heat exchanger is that the most efficient geometrical shape to thermally stabilize during exposure to heat or to neutron...

114

Anion Exchange Membranes for Fuel Cells | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Anion Exchange Membranes for Fuel Cells Anion Exchange Membranes for Fuel Cells Presentation at the AMFC Workshop, May 8-9, 2011, Arlington, VA amfc110811herring.pdf More...

115

Better Buildings Residential Network: Lessons Learned: Peer Exchange Calls  

Energy.gov (U.S. Department of Energy (DOE))

Better Buildings Residential Network: Lessons Learned: Peer Exchange Calls, from the U.S. Department of Energy.

116

Porous solid ion exchange wafer for immobilizing biomolecules  

DOE Patents (OSTI)

A porous solid ion exchange wafer having a combination of a biomolecule capture-resin and an ion-exchange resin forming a charged capture resin within said wafer. Also disclosed is a porous solid ion exchange wafer having a combination of a biomolecule capture-resin and an ion-exchange resin forming a charged capture resin within said wafer containing a biomolecule with a tag. A separate bioreactor is also disclosed incorporating the wafer described above.

Arora, Michelle B. (Woodridge, IL); Hestekin, Jamie A. (Morton Grove, IL); Lin, YuPo J. (Naperville, IL); St. Martin, Edward J. (Libertyville, IL); Snyder, Seth W. (Lincolnwood, IL)

2007-12-11T23:59:59.000Z

117

Design and Development of a Plastic Film Heat Exchanger  

E-Print Network (OSTI)

of the PFHX technology in olving heat. exchange at any pressure other than'atmo pheric pressure. Atmospheric applications could ope ate with a simple remote level control basin. There are also many other potential appl ca tions of the PFHX technology...DESIGN AND DEVELOPMENT OF A PLASTIC FILM HEAT EXCHANGER Eric C. Guyer, Sc.D., David L. Brownell, and Martin K. Gollin Dynatech RID Company Cambridge, Massachusetts ABSTRACT A plastic film heat exchang.er (PFHX) utilizes the low cost...

Guyer, E. C.; Gollin, M. K.; Brownell, D. L.

118

Heat exchanger containing a component capable of discontinuous movement  

DOE Patents (OSTI)

Regenerative heat exchangers are described for transferring heat between hot and cold fluids. The heat exchangers have seal-leakage rates significantly less than those of conventional regenerative heat exchangers because the matrix is discontinuously moved and is releasably sealed while in a stationary position. Both rotary and modular heat exchangers are described. Also described are methods for transferring heat between a hot and cold fluid using the discontinuous movement of matrices.

Wilson, David Gordon (Winchester, MA)

2002-01-01T23:59:59.000Z

119

Heat exchanger containing a component capable of discontinuous movement  

DOE Patents (OSTI)

Regenerative heat exchangers are described for transferring heat between hot and cold fluids. The heat exchangers have seal-leakage rates significantly less than those of conventional regenerative heat exchangers because the matrix is discontinuously moved and is releasably sealed while in a stationary position. Both rotary and modular heat exchangers are described. Also described are methods for transferring heat between a hot and cold fluid using the discontinuous movement of matrices. 11 figures.

Wilson, D.G.

1993-11-09T23:59:59.000Z

120

Quality Assurance Exchange Setpebmer 2007, Volume 3 Issue 3  

Energy.gov (U.S. Department of Energy (DOE))

Quality Assurance Exchange Setpebmer 2007, Volume 3 Issue 3 U.S. Department of Energy Office of Corporate Safety Analysis

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Quality Assurance Exchange August 2007, Volume 3 Issue 2  

Energy.gov (U.S. Department of Energy (DOE))

Quality Assurance Exchange August 2007, Volume 3 Issue 2 U.S. Department of Energy Office of Corporate Safety Analysis

122

Quality Assurance Exchange January 2007, Volume 3 Issue 1  

Energy.gov (U.S. Department of Energy (DOE))

Quality Assurance Exchange January 2007, Volume 3 Issue 1 U.S. Department of Energy Office of Corporate Safety Analysis

123

QUALITY ASSURANCE EXCHANGE July 2005 Volume 1 Issue 1  

Energy.gov (U.S. Department of Energy (DOE))

QUALITY ASSURANCE EXCHANGE July 2005 Volume 1 Issue 1 US Department of Energy, Office of Quality Assurance Programs (EH-31)

124

A New Type Heat Exchanger for Coal Burning Boilers  

Science Journals Connector (OSTI)

To make the best of heat energy in the flue gas exhausted from a coal burning boiler, the design proposal for a new type of heat exchanger was put forward in the paper. Via the new type of heat exchanger, temperature of the flue gas can be decreased ... Keywords: waste heat utilization, energy conservation, special heat exchanger, economizer

Bingwen Zhang; Yingjin Zhang

2010-06-01T23:59:59.000Z

125

FOCUS: HYDROGEN EXCHANGE AND COVALENT MODIFICATION ACCOUNT AND PERSPECTIVE  

E-Print Network (OSTI)

hydrogen exchange behavior, understand the underlying chemistry and structural physics of hydrogen exchange-protected by their H-bonding interactions, they engage in continual ex- change with the hydrogens of solvent water of the underlying chemistry and structural phys- ics of protein HX processes. The study of protein hydrogen exchange

Englander, S. Walter

126

Heat exchanger support apparatus in a fluidized bed  

DOE Patents (OSTI)

A heat exchanger is mounted in the upper portion of a fluidized combusting bed for the control of the temperature of the bed. A support, made up of tubes, is extended from the perforated plate of the fluidized bed up to the heat exchanger. The tubular support framework for the heat exchanger has liquid circulated therethrough to prevent deterioration of the support.

Lawton, Carl W. (West Hartford, CT)

1982-01-01T23:59:59.000Z

127

Office of Waste Processing Technical Exchange  

NLE Websites -- All DOE Office Websites (Extended Search)

Event Media Links Event Media Links Session 1: Technical Exchange Opening Topic Speaker PDF Podcast S01-01 Welcome T. Michalske, SRNL N/A Podcast S01-03 Introductions G. Flowers, SRNS N/A Podcast S01-04 Opening Remarks I. Triay, DOE-EM Presentation PDF Podcast S01-05 Status of Waste Processing Technology Development S. Schneider, DOE-EM Presentation PDF Podcast S01-06 Hanford/SRS Tank Waste Path Forward K. Subramanian/ T. Sams, SRR/WRPS Presentation PDF Podcast S01-07 Fluidized Bed Steam Reformer Overview B. Mason, TTT Presentation PDF Podcast S01-08 Next Generation Cesium Solvent B.Moyer/S. Fink/M. Geeting, ORNL/SRNL/SRR Presentation PDF Podcast S01-09 Rotary Microfilter Development/Small Column Ion Exchange D. Herman/ R. Edwards, SRNL/SRR Presentation PDF Podcast Session 2: Increased Waste Loading - Improved Current Processing

128

Dealing with Uncertainties During Heat Exchanger Design  

E-Print Network (OSTI)

Technology Conference, Houston, TX, May 1-4, 2001 E2 Area = 100 m 2 cp= 35 kW/K El Area = 300 m 2 Figure 1. Simple Heat Exchanger Network CP = 30 kW/K CP= 55 kWIK Assume that exchangers EI (of heat transfer area 100 m 2 ) and E2 (of 300 m 2... .) are perfectly sized. Consequently, the cold stream leaving E I has a temperature of 277?C and that leaving E2 a temperature of 212?C. If a ten percent design margin had been added to each of these units (i.e. El now has 110 m 2 and E2 has 330 m 2...

Polley, G. T.; Pugh, S. J.

129

Multidimensional numerical modeling of heat exchangers. [LMFBR  

SciTech Connect

A comprehensive, multidimensional, thermal-hydraulic model is developed for the analysis of shell-and-tube heat exchangers for liquid-metal services. For the shellside fluid, the conservation equations of mass, momentum, and energy for continuum fluids are modified using the concept of porosity, surface permeability and distributed resistance to account for the blockage effects due to the presence of heat-transfer tubes, flow baffles/shrouds, the support plates, etc. On the tubeside, the heat-transfer tubes are connected in parallel between the inlet and outlet plenums, and tubeside flow distribution is calculated based on the plenum-to-plenum pressure difference being equal for all tubes. It is assumed that the fluid remains single-phase on the shell side and may undergo phase-change on the tube side, thereby simulating the conditions of Liquid Metal Fast Breeder Reactor (LMFBR) intermediate heat exchangers (IHX) and steam generators (SG).

Sha, W.T.; Yang, C.I.; Kao, T.T.; Cho, S.M.

1982-01-01T23:59:59.000Z

130

Optimizing PT Arun LNG main heat exchanger  

SciTech Connect

The capacity of a LNG liquefaction unit has been increased by upgrading the refrigeration system, without making changes to the main heat exchanger (MHE). It is interesting, that after all modifications were completed, a higher refrigerant circulation alone could not increase LNG production. However, by optimizing the refrigerant component ratio, the UA of the MHE increased and LNG production improved. This technical evaluation will provide recommendations and show how the evaluation of the internal temperature profile helped optimize the MHE operating conditions.

Irawan, B. [PT Arun NGL Co., Sumatra (Indonesia)

1995-12-01T23:59:59.000Z

131

Office of Waste Processing Technical Exchange  

NLE Websites -- All DOE Office Websites (Extended Search)

EM Waste Processing Technical Exchange 2010 Agenda EM Waste Processing Technical Exchange 2010 Agenda (Sponsored by EM Office of Waste Processing) November 16 - 18, 2010; Loews Hotel, Atlanta, GA 11/2/2010 Monday, November 15, 2010 5:00 - 7:00 pm Early Registration and Speaker Check-in *Light Refreshments Tuesday Morning, November 16, 2010 Session 1: Technical Exchange Opening (Chair: W. Wilmarth); Salon D Live Webcast Click the video icon to view Session 1 Live Webcast Submit Question Click the Question icon to submit a question. Time Topic Speaker 7:00 am Registration and Check-in 8:00 am S01-01 Welcome T. Michalske, SRNL 8:05 am S01-02 Opening Comments Y. Collazo, DOE-EM 8:15 am S01-03 Introductions G. Flowers, SRNS 8:20 am S01-04 Opening Remarks I. Triay, DOE-EM 8:45 am S01-05 Status of Waste Processing Technology Development

132

Novel silica-based ion exchange resin  

SciTech Connect

Eichrom`s highly successful Diphonixo resin resembles a conventional ion exchange resin in its use of sulfonic acid ligands on a styrene- divinylbenzene matrix. Diphonix resin exhibits rapid exchange kinetics that allow economical operation of ion exchange systems. Unlike conventional resins, Diphonix resin contains chelating ligands that are diphosphonic acid groups that recognize and remove the targeted metals and reject the more common elements such as sodium, calcium and magnesium. This latter property makes Diphonix ideal for many industrial scale applications, including those involving waste treatment. For treatment of low-level, transuranic (TRU) and high- level radioactive wastes, Diphonix`s polystyrene backbone hinders its application due to radiolytic stability of the carbon-hydrogen bonds and lack of compatibility with expected vitrification schemes. Polystyrene-based Diphonix is approximately 60% carbon- hydrogen. In response to an identified need within the Department of Energy for a resin with the positive attributes of Diphonix that also exhibits greater radiolytic stability and final waste form compatibility, Eichrom has successfully developed a new, silica-based resin version of Diphonix. Target application for this new resin is for use in environmental restoration and waste management situations involving the processing of low-level, transuranic and high-level radioactive wastes. The resin can also be used for processing liquid mixed waste (waste that contains low level radioactivity and hazardous constituents) including mixed wastes contaminated with organic compounds. Silica-based Diphonix is only 10% carbon-hydrogen, with the bulk of the matrix silica.

NONE

1997-11-01T23:59:59.000Z

133

Exact exchange in relativistic spin-density-functional theory: Exchange splitting versus spin-orbit coupling  

Science Journals Connector (OSTI)

Recently, the concept of the exact orbital-dependent exchange was introduced into relativistic spin-density-functional theory (RSDFT) within the collinear limit [D. Kdderitzsch et al., Phys. Rev. B 77, 045101 (2008)]. In this contribution we further expand this exact exchange (EXX) formalism by (i) extending the basic equations to the general noncollinear form of RSDFT and (ii) discussing in detail the solution of the coupled integral equations resulting from orbital-dependent functionals in the framework of RSDFT. The EXX scheme is then applied to open-shell atoms in order to study (i) the relative importance of exchange splitting and spin-orbit coupling, (ii) the consequences of the exact exchange for atomic hyperfine constants, and (iii) the relative stability of the 3dn?14s2 and 3dn4s1 configurations in case of the 3d transition-metal elements. In particular, it is demonstrated that the exact exchange, when combined with the orbital-dependent random-phase approximation for correlation, yields s-d-transfer energies which are clearly superior to the values obtained with conventional density functionals.

E. Engel, D. Kdderitzsch, and H. Ebert

2008-12-30T23:59:59.000Z

134

Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger  

NLE Websites -- All DOE Office Websites (Extended Search)

Radial Air Bearing Radial Air Bearing Heat Exchanger Research Project to someone by E-mail Share Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Facebook Tweet about Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Twitter Bookmark Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Google Bookmark Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Delicious Rank Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Digg Find More places to share Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE

135

HVAC Radial Air Bearing Heat Exchangers Research Project | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Radial Air Bearing Heat Exchangers Radial Air Bearing Heat Exchangers Research Project HVAC Radial Air Bearing Heat Exchangers Research Project The U.S. Department of Energy is currently conducting research into heating, ventilation, and air conditioning (HVAC) radial air bearing heat exchangers. Rotary air bearing heat exchanger technology simultaneously solves four long standing problems of conventional "fan-plus-finned-heat-sink" heat exchangers. Project Description This project seeks to design, fabricate, and test successive generations of prototype radial air bearing heat exchanger devices based on lessons learned and further insights into device optimization, computational fluid dynamic studies for parametric optimization and determination of scaling laws, and laboratory measurement of flow field and heat transfer

136

2012 National Trainers' Exchange for Department of Energy Safety and  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

National Trainers' Exchange for Department of Energy Safety National Trainers' Exchange for Department of Energy Safety and Health Trainers 2012 National Trainers' Exchange for Department of Energy Safety and Health Trainers Workshop Dates: May 7-8, 2012 The National Institute of Environmental Health Sciences Worker Education and Training Program (NIEHS WETP) hosted the first National Trainers' Exchange for Department of Energy (DOE) safety and health trainers on May 7-8, 2012 in Knoxville, TN. Over 100 participants attended the Trainers' Exchange to share and exchange best practices and techniques on how to create more effective and empowering training. The Conference was funded under its DOE Nuclear Worker Training Program. A trainers' exchange is designed for trainers to share best practices and new techniques through a series of workshops conducted by the trainers

137

Minutes of the 28th Annual Plutonium Sample Exchange Meeting. Part II: metal sample exchange  

SciTech Connect

Contents of this publication include the following list of participating laboratories; agenda; attendees; minutes of October 25 and 26 meeting; and handout materials supplied by speakers. The handout materials cover the following: statistics and reporting; plutonium - chemical assay 100% minus impurities; americium neptunium, uranium, carbon and iron data; emission spectroscopy data; plutonium metal sample exchange; the calorimetry sample exchange; chlorine determination in plutonium metal using phyrohydrolysis; spectrophotometric determination of 238-plutonium in oxide; plutonium measurement capabilities at the Savannah River Plant; and robotics in radiochemical laboratory.

Not Available

1984-01-01T23:59:59.000Z

138

Solidification of ion exchange resin wastes  

SciTech Connect

Solidification media investigated included portland type I, portland type III and high alumina cements, a proprietary gypsum-based polymer modified cement, and a vinyl ester-styrene thermosetting plastic. Samples formulated with hydraulic cement were analyzed to investigate the effects of resin type, resin loading, waste-to-cement ratio, and water-to-cement ratio. The solidification of cation resin wastes with portland cement was characterized by excessive swelling and cracking of waste forms, both after curing and during immersion testing. Mixed bed resin waste formulations were limited by their cation component. Additives to improve the mechanical properties of portland cement-ion exchange resin waste forms were evaluated. High alumina cement formulations dislayed a resistance to deterioration of mechanical integrity during immersion testing, thus providing a significant advantage over portland cements for the solidification of resin wastes. Properties of cement-ion exchange resin waste forms were examined. An experiment was conducted to study the leachability of /sup 137/Cs, /sup 85/Sr, and /sup 60/Co from resins modified in portland type III and high alumina cements. The cumulative /sup 137/Cs fraction release was at least an order of magnitude greater than that of either /sup 85/Sr or /sup 60/Co. Release rates of /sup 137/Cs in high alumina cement were greater than those in portland III cement by a factor of two.Compressive strength and leach testing were conducted for resin wastes solidified with polymer-modified gypsum based cement. /sup 137/Cs, /sup 85/Sr, and /sup 60/Co fraction releases were about one, two and three orders of magnitude higher, respectively, than in equivalent portland type III cement formulations. As much as 28.6 wt % dry ion exchange resin was successfully solidified using vinyl ester-styrene compared with a maximum of 25 wt % in both portland and gypsum-based cement.

Not Available

1982-08-01T23:59:59.000Z

139

Anion Exchange Membranes - Transport/Conductivity  

NLE Websites -- All DOE Office Websites (Extended Search)

Fundamental understanding Fundamental understanding * Driving membranes towards applications Anion Exchange Membranes - Transport/Conductivity High Priority * A need for a standard/available AEM (similar to Nafion in PEMs) * Define standard experimental conditions and protocols * A need for much more fundamental studies in transport mechanisms and mechanical properties * A need to develop much more new AEMs with alternative chemistries (new cation and backbone chemistries) Fundamental Studies * TRANSPORT * Conductivity (pure OH - hard to measure) * Water content, λ * Diffusion coefficients, NMR * Drag coefficients * Transference * Solubility * Fundamental transport mechanisms for anion and water transport * Computational Modeling * MORPHOLOGY/CHEMISTRY * Vibrational Spectroscopy: FTIR, Raman

140

Organosilicon ion-exchange and complexing adsorbents  

Science Journals Connector (OSTI)

Data on the ion-exchange and complexing organosilicon adsorbents published during the last 1012 years, including the results of systematic research of the authors, are summarized and analyzed. The following types of substances are considered: silicas with covalently grafted modifiers, silicas and aluminosilicates with non-covalently grafted modifiers and carbofunctional polyorganylsilsesquioxanes prepared by polycondensation of appropriate organosilicon monomers. Adsorbents of these types find extensive practical use, in particular, as analytical reagents for determination of metals in natural and artificial specimens, agents for isolation of valuable elements from industrial wastes and agents for removal of especially hazardous components from wastes and effluents. The bibliography includes 109 references.

N N Vlasova; E N Oborina; O Yu Grigoryeva; Mikhail G Voronkov

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Heat exchanger with auxiliary cooling system  

DOE Patents (OSTI)

A heat exchanger with an auxiliary cooling system capable of cooling a nuclear reactor should the normal cooling mechanism become inoperable. A cooling coil is disposed around vertical heat transfer tubes that carry secondary coolant therethrough and is located in a downward flow of primary coolant that passes in heat transfer relationship with both the cooling coil and the vertical heat transfer tubes. A third coolant is pumped through the cooling coil which absorbs heat from the primary coolant which increases the downward flow of the primary coolant thereby increasing the natural circulation of the primary coolant through the nuclear reactor.

Coleman, John H. (Salem Township, Westmoreland County, PA)

1980-01-01T23:59:59.000Z

142

Heat exchanger for a Stirling engine  

SciTech Connect

A heat exchanger is described for a Stirling engine comprising: a domed cylinder having a domed portion and a cylindrical portion. The domed cylinder serves as a high-temperature cylinder and a regenerator housing of the Stirling engine; a cylindrical inner liner which is coaxially disposed inside the domed cylinder and which divides the inside of the domed cylinder into an expansion space inside of the inner liner and a regenerator space between the outer surface of the inner liner and the inner surface of the cylindrical portion of the domed cylinder.

Fujiwara, M.; Nomaguchi, T.; Kazumoto, Y.; Tsuchino, K.; Kawajiri, K.; Hisamori, Y.

1987-05-05T23:59:59.000Z

143

IEA Energy Technology Data Exchange | Open Energy Information  

Open Energy Info (EERE)

IEA Energy Technology Data Exchange IEA Energy Technology Data Exchange Jump to: navigation, search Tool Summary Name: IEA Energy Technology Data Exchange Agency/Company /Organization: International Energy Agency Sector: Energy Topics: Technology characterizations Resource Type: Dataset Website: www.etde.org/ References: IEA Energy Technology Data Exchange[1] Mission "ETDE's mission is: "To provide governments, industry and the research community in the member countries with access to the widest range of information on energy research, science and technology and to increase dissemination of this information to developing countries."" References ↑ "IEA Energy Technology Data Exchange" Retrieved from "http://en.openei.org/w/index.php?title=IEA_Energy_Technology_Data_Exchange&oldid=32878

144

SPR Awards Exchange Contract to Shell Trading | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Awards Exchange Contract to Shell Trading Awards Exchange Contract to Shell Trading SPR Awards Exchange Contract to Shell Trading May 10, 2007 - 12:55pm Addthis Deliveries to Begin in August WASHINGTON, DC - The U.S. Department of Energy (DOE) today awarded a contract to Shell Trading for exchange of 8.7 million barrels of royalty oil produced from the Gulf Coast for crude oil meeting the quality specifications of the Strategic Petroleum Reserve (SPR). The exchange oil will be delivered to two SPR sites, West Hackberry, Louisiana and Bryan Mound, Texas. The offer submitted by Shell Trading represented the highest value of specification-grade oil for the Reserve. Deliveries are expected to begin in August 2007 at a modest rate of approximately 50,000 barrels per day for a period of six months. The contract terms apply royalty-in-kind exchange provisions that require

145

HVAC Optimized Heat Exchangers Research Project | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Optimized Heat Exchangers Research Optimized Heat Exchangers Research Project HVAC Optimized Heat Exchangers Research Project The U.S. Department of Energy is currently conducting research into heating, ventilation, and air conditioning (HVAC) optimized heat exchangers. The information generated in this study will demonstrate performance improvements that can be achieved through optimization of refrigerant circuitry for non-uniform inlet air distribution. The tubing circuitry on fin-tube heat exchangers used in residential space-conditioning systems is typically designed assuming uniform airflow through the finned passageways. However, the air flow in installed systems is highly non-uniform, resulting in mismatched refrigerant-air heat transfer that reduces the capacity of the heat exchanger and efficiency of

146

EPR Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide Free Radicals in Liquids 2. Extension to High Spin Exchange Frequencies and Inhomogeneously  

E-Print Network (OSTI)

EPR Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide Free Radicals in Liquids 2 for the EPR spectrum of a nitroxide free radical undergoing spin exchange in the slow exchange limit following

Bales, Barney

147

The Energy Impact of Industrial Recycling and Waste Exchange  

E-Print Network (OSTI)

THE ENERGY IMPACT OF INDUSTRIAL RECYCLING AND WASTE EXCHANGE W. CURTIS PHILLIPS, SYSTEMS ENGINEER/INDUSTRIAL PROJECT MANAGER, N.C. ENERGY DIVISION, RALEIGH, NC ABSTRACT Recycling and waste exchange, particularly in the industrial sector, has a... products from virgin materials. Process energy reduction possible by recycling is estimated to be as high is 95% for aluminum and 88% for plastics. Industrial waste exchange is facilit~ted by having an independent agency to publicize and coordinate...

Phillips, W. C.

148

Diffusion-Welded Microchannel Heat Exchanger for Industrial Processes  

SciTech Connect

The goal of next generation reactors is to increase energy ef?ciency in the production of electricity and provide high-temperature heat for industrial processes. The ef?cient transfer of energy for industrial applications depends on the ability to incorporate effective heat exchangers between the nuclear heat transport system and the industrial process. The need for ef?ciency, compactness, and safety challenge the boundaries of existing heat exchanger technology. Various studies have been performed in attempts to update the secondary heat exchanger that is downstream of the primary heat exchanger, mostly because its performance is strongly tied to the ability to employ more ef?cient industrial processes. Modern compact heat exchangers can provide high compactness, a measure of the ratio of surface area-to-volume of a heat exchange. The microchannel heat exchanger studied here is a plate-type, robust heat exchanger that combines compactness, low pressure drop, high effectiveness, and the ability to operate with a very large pressure differential between hot and cold sides. The plates are etched and thereafter joined by diffusion welding, resulting in extremely strong all-metal heat exchanger cores. After bonding, any number of core blocks can be welded together to provide the required ?ow capacity. This study explores the microchannel heat exchanger and draws conclusions about diffusion welding/bonding for joining heat exchanger plates, with both experimental and computational modeling, along with existing challenges and gaps. Also, presented is a thermal design method for determining overall design speci?cations for a microchannel printed circuit heat exchanger for both supercritical (24 MPa) and subcritical (17 MPa) Rankine power cycles.

Piyush Sabharwall; Denis E. Clark; Michael V. Glazoff; Michael G. McKellar; Ronald E. Mizia

2013-03-01T23:59:59.000Z

149

Heat exchanger and water tank arrangement for passive cooling system  

DOE Patents (OSTI)

A water storage tank in the coolant water loop of a nuclear reactor contains a tubular heat exchanger. The heat exchanger has tubesheets mounted to the tank connections so that the tubesheets and tubes may be readily inspected and repaired. Preferably, the tubes extend from the tubesheets on a square pitch and then on a rectangular pitch therebetween. Also, the heat exchanger is supported by a frame so that the tank wall is not required to support all of its weight.

Gillett, James E. (Greensburg, PA); Johnson, F. Thomas (Baldwin Boro, PA); Orr, Richard S. (Pittsburgh, PA); Schulz, Terry L. (Murrysville Boro, PA)

1993-01-01T23:59:59.000Z

150

Application of heat exchangers in BWR nuclear power stations  

SciTech Connect

Applications of heat exchangers, in typical BWR Nuclear Power Plant fluid systems, are described from a process standpoint. System schematics and lists of heat exchanger parameters are presented to aid in understanding the influence of the process on specific applications. These exchangers are constructed to meet special code, seismic, and quality assurance criteria. They have a variety of configurations, including both vertical and horizontal, and are of ''U'' tube or once-through design.

Hess, F.L.; Patti, F.J.

1982-01-01T23:59:59.000Z

151

The Energy Efficiency Exchange Website | Open Energy Information  

Open Energy Info (EERE)

The Energy Efficiency Exchange Website The Energy Efficiency Exchange Website Jump to: navigation, search Tool Summary LAUNCH TOOL Name: The Energy Efficiency Exchange Website Focus Area: Other Energy Efficiency Topics: Training Material Website: eex.gov.au/ Equivalent URI: cleanenergysolutions.org/content/energy-efficiency-exchange-website Language: English Policies: "Deployment Programs,Financial Incentives" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. DeploymentPrograms: Retrofits This online joint initiative of Australia's national, state, and territorial governments aims to support the development and implementation of energy management and energy efficiency strategies among medium to large businesses. The website accomplishes this by providing information from

152

Peer Exchange Calls Inspire New Lessons Learned Greatest Hits  

Energy.gov (U.S. Department of Energy (DOE))

A new Lessons Learned: Peer Exchange Calls resource summarizes top takeaways shared by Better Buildings Residential Network members, from tips to collaborating with utilities to cost-effective...

153

Neutron and gamma radiation effects in proton exchanged optical waveguides  

Science Journals Connector (OSTI)

The effect of neutron and gamma ray irradiations on the optical properties of proton exchanged Z-cut lithium niobate optical planar waveguides were investigated. The damage thresholds...

Passaro, Vittorio; Armenise, Mario

2002-01-01T23:59:59.000Z

154

Heavy metals removal from oil sludge using ion exchange textiles.  

E-Print Network (OSTI)

??In this research, ion exchange textiles were used for the first time for the removal of heavy metals from oil sludge. The target metals which (more)

Muslat, Ziyad

2005-01-01T23:59:59.000Z

155

Data exchange standards for computer-aided engineering and manufacturing  

Science Journals Connector (OSTI)

In this paper, we describe the data exchange standards used to transfer between CAD/CAM and finite element systems. The standards currently in most common use are: Initial Graphic Exchange Standard (IGES), and Autodesk Inc.'s DXF format. Two new standards, Product Definition Exchange Standards (PDES) and Standard for Exchange of Product Model Data (STEP) will be available soon. These two standards, which are intended to be functionally identical, will also be discussed. Several examples are given to show the translations from one CAD/CAM system to another. Several pitfalls and difficulties are illustrated in using these standards.

Aftab A. Mufti; Michael L. Morris; William B. Spencer

1990-01-01T23:59:59.000Z

156

Demonstration and Performance Monitoring of Foundation Heat Exchangers...  

Energy Savers (EERE)

for New and Existing Homes: Foundation Heat Exchanger, Oak Ridge, Tennessee Performance Analysis of Air-Source Variable Speed Heat Pumps and Various Electric Water Heating Options...

157

States Biomass/Clean Cities Information Exchange: Food and Fuel...  

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

Clean Cities Information Exchange: Food and Fuel At the August 7, 2008 joint quarterly Web conference of DOE's Biomass and Clean Cities programs, Roya Stanley (Iowa Office of...

158

Quality Assurance Exchange August 2009, Volume 5 Issue 2  

Energy.gov (U.S. Department of Energy (DOE))

Quality Assurance Exchange August 2009, Volume 5 Issue 2 U.S. Department of Energy Office of Quality Assurance Policy and Assistance

159

NEI Corporation Technology Promotes Efficiency in Heat Exchangers...  

Office of Science (SC) Website

More Information January 2013 NEI Corporation Technology Promotes Efficiency in Heat Exchangers NEI's SuperCondenser(tm) technology increases the energy efficiency of a...

160

Kitchen Appliance Upgrades Improve Water Efficiency at DOD Exchange...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Kitchen Appliance Upgrades Improve Water Efficiency at DOD Exchange Facilities: Best Management Practice Case Study 11: Commercial Kitchen Equipment (Brochure), Federal Energy...

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Technical Information Exchange on Pyrolysis Oil: Potential for...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

renewable heating oil substitution Technical Information Exchange on Pyrolysis Oil: Potential for a renewable heating oil substitution Two-day agenda from the workshop: Technical...

162

QUALITY ASSURANCE EXCHANGE December 2005 Volume 1 Issue 3  

Energy.gov (U.S. Department of Energy (DOE))

QUALITY ASSURANCE EXCHANGE December 2005 Volume 1 Issue 3 U.S. Department of Energy, Office of Corporate Performance Assessment Office of Quality Assurance Programs (EH-31)

163

Quality Assurance Exchange Winter 2010 Volume 6 Issue 1  

Energy.gov (U.S. Department of Energy (DOE))

Quality Assurance Exchange Winter 2010 Volume 6 Issue 1 U.S. Department of Energy Office of Quality Assurance Policy and Assistance

164

Quality Assurance Exchange October 2008 Volume 4 Issue 2  

Energy.gov (U.S. Department of Energy (DOE))

Quality Assurance Exchange October 2008 Volume 4 Issue 2 U.S. Department of Energy Office of Quality Assurance Policy and Assistance

165

Quality Assurance Exchange March 2006, Volume 2 Issue 1  

Energy.gov (U.S. Department of Energy (DOE))

Quality Assurance Exchange March 2006, Volume 2 Issue 1 U.S. Department of Energy, Office of Corporate Performance Assessment Office of Quality Assurance Programs (EH-31)

166

Controlling mercury spills in laboratories with a thermometer exchange program  

E-Print Network (OSTI)

and Verification of Thermometers. American Society forliquid-in-glass thermometers - general purpose laboratoryin Laboratories with A Thermometer Exchange Program Lawrence

McLouth, Lawrence D.

2002-01-01T23:59:59.000Z

167

Charge exchange recombination spectroscopy on fusion devices  

SciTech Connect

For fusion, obtaining reliable measurements of basic plasma parameters like ion and electron densities and temperatures is a primary goal. For theory, measurements are needed as a function of time and space to understand plasma transport and confinement with the ultimate goal of achieving economic nuclear fusion power. Electron profile measurements and plasma spectroscopy for the plasma ions are introduced. With the advent of Neutral Beam auxiliary plasma heating, Charge Exchange Recombination Spectroscopy provides accurate and time resolved measurements of the ions in large volume fusion devices. In acknowledgement of Nicol Peacock's role in the development of these techniques, still at the forefront of plasma fusion research, this paper describes the evolution of this diagnostic method.

Duval, B. P. [Centre de Recherches en Physique des Plasmas, EPFL, Lausanne (Switzerland)

2012-05-25T23:59:59.000Z

168

Microchannel Heat Exchangers with Carbon Dioxide  

SciTech Connect

The objective of the present study was to determine the performance of CO{sub 2} microchannel evaporators and gas coolers in operational conditions representing those of residential heat pumps. A set of breadboard prototype microchannel evaporators and gas coolers was developed and tested. The refrigerant in the heat exchangers followed a counter cross-flow path with respect to the airflow direction. The test conditions corresponded to the typical operating conditions of residential heat pumps. In addition, a second set of commercial microchannel evaporators and gas coolers was tested for a less comprehensive range of operating conditions. The test results were reduced and a comprehensive data analysis, including comparison with the previous studies in this field, was performed. Capacity and pressure drop of the evaporator and gas cooler for the range of parameters studied were analyzed and are documented in this report. A gas cooler performance prediction model based on non-dimensional parameters was also developed and results are discussed as well. In addition, in the present study, experiments were conducted to evaluate capacities and pressure drops for sub-critical CO{sub 2} flow boiling and transcritical CO{sub 2} gas cooling in microchannel heat exchangers. An extensive review of the literature failed to indicate any previous systematic study in this area, suggesting a lack of fundamental understanding of the phenomena and a lack of comprehensive data that would quantify the performance potential of CO{sub 2} microchannel heat exchangers for the application at hand. All experimental tests were successfully conducted with an energy balance within {+-}3%. The only exceptions to this were experiments at very low saturation temperatures (-23 C), where energy balances were as high as 10%. In the case of evaporators, it was found that a lower saturation temperature (especially when moisture condensation occurs) improves the overall heat transfer coefficient significantly. However, under such conditions, air side pressure drop also increases when moisture condensation occurs. An increase in airflow rate also increases the overall heat transfer coefficient. Air side pressure drop mainly depends on airflow rate. For the gas cooler, a significant portion of the heat transfer occurred in the first heat exchanger module on the refrigerant inlet side. The temperature and pressure of CO{sub 2} significantly affect the heat transfer and fluid flow characteristics due to some important properties (such as specific heat, density, and viscosity). In the transcritical region, performance of CO{sub 2} strongly depends on the operating temperature and pressure. Semi-empirical models were developed for predictions of CO{sub 2} evaporator and gas cooler system capacities. The evaporator model introduced two new factors to account for the effects of air-side moisture condensate and refrigerant outlet superheat. The model agreed with the experimental results within {+-}13%. The gas cooler model, based on non-dimensional parameters, successfully predicted the experimental results within {+-}20%. Recommendations for future work on this project include redesigning headers and/or introducing flow mixers to avoid flow mal-distribution problems, devising new defrosting techniques, and improving numerical models. These recommendations are described in more detail at the end of this report.

Zhao, Y.; Ohadi, M.M.; Radermacher, R.

2001-09-15T23:59:59.000Z

169

Electron exchange-correlation in quantum mechanics  

SciTech Connect

It is shown that Fermi-Dirac statistics is guaranteed by the Dirac current, from which spin-dependent quantum velocity fields and spin-dependent quantum trajectories can be inferred. Pauli's exclusion principle is demonstrated using the spin-dependent quantum trajectories. The Dirac current, unlike the Schroedinger current, is nonzero for stationary bound states due to the permanent magnetic moment of the electron. It is of order c{sup 0} in agreement with observation that Fermi-Dirac statistics is independent of electronic velocity. In summary the physical basis for exchange-correlation is found in Dirac's equation, although Schroedinger's equation may be used to evaluate the Dirac current in the nonrelativistic regime of electronic velocity.

Ritchie, B

2009-01-30T23:59:59.000Z

170

Exchange Polarization Effects in Hyperfine Structure  

Science Journals Connector (OSTI)

Exchange polarization of core electrons by outer unpaired electrons has been calculated for 10 different atomic configurations of Li, Na, K, F, Cl, Be, B, and N in the unrestricted Hartree-Fock (UHF) approximation. Numerical integration techniques were used and accurate conventional Hartree-Fock (HF) wave functions were also obtained for these configurations. The theory of atomic hyperfine structure in the UHF approximation is developed and the HF and UHF calculated values of the hyperfine coupling constants are compared with available experimental data. The importance of core polarization in solid state problems is briefly mentioned with particular attention to color centers. Finally, unsuccessful attempts to calculate core polarization by perturbation expansion methods are discussed.

D. A. Goodings

1961-09-01T23:59:59.000Z

171

TECHNICAL COMPARISON OF CANDIDATE ION EXCHANGE MEDIA FOR SMALL COLUMN ION EXCHANGE (SCIX) APPLICATIONS IN SUPPORT OF SUPPLEMENTAL LAW PRETREATMENT  

SciTech Connect

At-tank supplemental pretreatment including both filtration and small column ion exchange is currently under evaluation to facilitate salt waste retrieval and processing in the Hanford tank farms. Spherical resorcinol formaldehyde (sRF) resin is the baseline ion exchange resin for use in the Waste Treatment and Immobilization Plant (WTP). This document provides background and technical rationale to assist in determining whether spherical resorcinol formaldehyde (sRF) is also the appropriate ion exchange resin for supplemental LAW pretreatment processes and compares sRF with crystalline silicotitanate (CST) as potential supplemental pretreatment ion exchange media.

RAMSEY AA; THORSON MR

2010-12-28T23:59:59.000Z

172

Exchange-Spring Magnets: Nanocomposite Exchange-Spring Magnets for Motor and Generator Applications  

SciTech Connect

REACT Project: ANL will develop a cost-effective exchange-spring magnet to use in the electric motors of wind generators and EVs that uses no rare earth materials. This ANL exchange-spring magnet combines a hard magnetic outer shell with a soft magnetic inner corecoupling these together increases the performance (energy density and operating temperature). The hard and soft magnet composite particles would be created at the molecular level, followed by consolidation in a magnetic field. This process allows the particles to be oriented to maximize the magnetic properties of low-cost and abundant metals, eliminating the need for expensive imported rare earths. The ultimate goal of this project is to demonstrate this new type of magnet in a prototype electric motor.

None

2012-01-01T23:59:59.000Z

173

Modeling Multi-Metal Ion Exchange in Biosorption  

E-Print Network (OSTI)

, may serve as a means for purifying industrial wastewaters that contain toxic heavy metal ions heavy metals often through ion exchange. This biosorption can be used for purification of metalModeling Multi-Metal Ion Exchange in Biosorption S I L K E S C H I E W E R A N D B O H U M I L V O

Volesky, Bohumil

174

Walking in simulated reduced gravity: mechanical energy fluctuations and exchange  

E-Print Network (OSTI)

, such that the ratio of horizontal kinetic to gravitational potential energy fluctuations remained constant over a four cycle the kinetic and potential energy are exchanged such that the total external work required to lift to a point mass on massless rigid legs (2, 12, 29). The amount of exchange, often described as ``per- cent

Kram, Rodger

175

Secure password-based authenticated key exchange for web services  

Science Journals Connector (OSTI)

This paper discusses an implementation of an authenticated key-exchange method rendered on message primitives defined in the WS-Trust and WS-SecureConversation specifications. This IEEE-specified cryptographic method (AuthA) is proven-secure for password-based ... Keywords: authenticated key exchange, password, security, web services

Liang Fang; Samuel Meder; Olivier Chevassut; Frank Siebenlist

2004-10-01T23:59:59.000Z

176

Safety Peer Exchange for Tribal Governments Save the Date!  

E-Print Network (OSTI)

Safety Peer Exchange for Tribal Governments Save the Date! December 9 and 10, 2014 Please mark your calendars for the Tribal Road Safety Peer Exchange sponsored by the FHWA Office of Safety in cooperation safety. The draft agenda includes: DAY 1 ­ Tuesday December 9, 2014 (8am to 5pm) Presentations o Tribal

Hartman, Chris

177

Ion-exchange material and method of storing radioactive wastes  

DOE Patents (OSTI)

A new cation exchanger is a modified tobermorite containing aluminum isomorphously substituted for silicon and containing sodium or potassium. The exchanger is selective for lead, rubidium, cobalt, and cadmium and is selective for cesium over calcium or sodium. The tobermorites are compatible with cement and are useful for the long-term fixation and storage of radioactive nuclear wastes.

Komarneni, S.; Roy, D.M.

1983-10-31T23:59:59.000Z

178

Optimized Anion Exchange Membranes for Vanadium Redox Flow Batteries  

Science Journals Connector (OSTI)

vanadium redox flow battery; anion exchange membrane; ion exchange capacity; cycling performance; power density ... All electrochemical measurements were conducted using a fully automated redox flow battery testing system (Scribner 857 Redox Flow Cell System). ... Characteristics of a new all-vanadium redox flow battery ...

Dongyang Chen; Michael A. Hickner; Ertan Agar; E. Caglan Kumbur

2013-06-25T23:59:59.000Z

179

Deposition of Biological Aerosols on HVAC Heat Exchangers  

E-Print Network (OSTI)

LBNL-47669 Deposition of Biological Aerosols on HVAC Heat Exchangers Jeffrey Siegel and Iain Walker of Biological Aerosols on HVAC Heat Exchangers Jeffrey A. Siegel Iain S. Walker, Ph.D. ASHRAE Student Member that are found in commercial and residential HVAC systems of 1 - 6 m/s (200 - 1200 ft/min), particle diameters

180

Epoxy-crosslinked sulfonated poly (phenylene) copolymer proton exchange membranes  

DOE Patents (OSTI)

An epoxy-crosslinked sulfonated poly(phenylene) copolymer composition used as proton exchange membranes, methods of making the same, and their use as proton exchange membranes (PEM) in hydrogen fuel cells, direct methanol fuel cell, in electrode casting solutions and electrodes, and in sulfur dioxide electrolyzers. These improved membranes are tougher, have higher temperature capability, and lower SO.sub.2 crossover rates.

Hibbs, Michael (Albuquerque, NM); Fujimoto, Cy H. (Albuquerque, NM); Norman, Kirsten (Albuquerque, NM); Hickner, Michael A. (State College, PA)

2010-10-19T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

State Administration for Foreign Exchange | Open Energy Information  

Open Energy Info (EERE)

State Administration for Foreign Exchange State Administration for Foreign Exchange Jump to: navigation, search TODO: More information needed This article is a stub. You can help OpenEI by expanding it. China's State Administration For Foreign Exchange (SAFE) is also responsible for NGOs http://en.wikipedia.org/wiki/State_Administration_of_Foreign_Exchange http://www.csmonitor.com/World/Asia-Pacific/2010/0520/Law-chokes-Chinese-NGOs-foreign-funding Retrieved from "http://en.openei.org/w/index.php?title=State_Administration_for_Foreign_Exchange&oldid=306631" Categories: Articles with outstanding TODO tasks Stubs What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation:

182

Building Energy Data Exchange Specification (BEDES) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Commercial Buildings » Building Energy Data Exchange Specification Commercial Buildings » Building Energy Data Exchange Specification (BEDES) Building Energy Data Exchange Specification (BEDES) The Building Energy Data Exchange Specification (BEDES, pronounced "beads" or /bi:ds/) is designed to support analysis of the measured energy performance of commercial, multifamily, and residential buildings, by providing a common data format, definitions, and an exchange protocol for building characteristics, efficiency measures, and energy use. Challenge One of the primary challenges to expanding the building energy efficiency retrofit market is the lack of empirical data on the energy performance and physical and operational characteristics of commercial, multifamily, and residential buildings. This makes it difficult for building-level

183

Ocean - Data Publishing and Exchange | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Publishing and Exchange Publishing and Exchange Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov » Communities » Ocean Data Publishing and Exchange This section provides information on common mapping service and data encoding standards, data publishing considerations, and links to relevant data access and exchange ontologies and semantics. Common Mapping Standards Data Publishing Considerations Data Access and Exchange Common Mapping Standards Why Use Data Standards? Benefits Encourage internal and external interoperability Data can be leveraged beyond the initial intent for creation Increase system transparency Reduces design and development time Obstacles Many different kinds of standards Can often be complex to architect Initial learning curve to get started

184

Control Dewar Subcooler Heat Exchanger Calculations  

SciTech Connect

The calculations done to size the control dewar subcooler were done to obtain a sufficient subcooler size based on some conservative assumptions. The final subcooler design proposed in the design report will work even better because (1) It has more tubing length, and (2) will have already subcooled liquid at the inlet due to the transfer line design. The subcooler design described in the 'Design Report of the 2 Tesla Superconducting Solenoid for the Fermilab D0 Detector Upgrade' is the final design proposed. A short description of this design follows. The subcooler is constructed of 0.50-inch OD copper tubing with 1.0-inch diameter fins. It has ten and one half spirals at a 11.375-inch centerline diameter to provide 31 feet of tubing length. The liquid helium supply for the solenoid flows through the subcooler and then is expanded through a J-T valve. The subcooler spirals are immersed in the return two phase helium process stream. The return stream is directed over the finned tubing by an annulus created by a 10-inch pipe inside a 12-inch pipe. The transfer line from the refrigerator to the control dewar is constructed such that the liquid helium supply tube is in the refrigerator return stream, thereby subcooling the liquid up to the point where the u-tubes connect the transfer line to the control dewar. The subcooler within the control dewar will remove the heat picked up in the helium supply u-tube/bayonets. The attached subcooler/heat exchanger calculations were done neglecting any subcooling in the transfer line. All heat picked up in the transfer line from the refrigerator storage dewar to the control dewar is absorbed by the supply stream. The subcooler was sized such that the two phase supply fluid is subcooled at 1.7 atm pressure and when expanded through a JT valve to 1.45 atm pressure it is at a saturated liquid state. The calculations apply during steady state operation and at a flow rate of 16 g/s. The analysis of the heat exchanger was broken into two parts relating to the heat transfer mode taking place. The first part is considered the condensing part in which the helium supply stream is changed from two phase fluid to one phase liquid. The second part is the subcooling part where the liquid temperature is lowered, i.e.. subcooled. A summary of the calculations and results appears on the next page. The raw calculations follow the summary.

Rucinski, R.; /Fermilab

1993-10-04T23:59:59.000Z

185

Hydrotreater feed/effluent heat exchange  

SciTech Connect

This patent describes a hydrotreating process for catalytically hydrogenating a hydrocarbon stock. It comprises dividing the hydrocarbon stock into two portions comprising a major portion and a minor portion, mixing the major portion with hydrogen to form a major portion mixture at a first temperature, and passing the major portion mixture through a multiple pass tube furnace to yield a heated major portion mixture at a first reactor inlet temperature, passing the heated major portion mixture to a hydrogenation catalyst containing reactor, thereby hydrogenating and heating the major portion mixture by heat of reaction to a reactor outlet temperature, withdrawing a hot hydrogenated stock from the reactor at the reactor outlet temperature wherein the hot hydrogenated stock comprises the entire reactor effluent, mixing the minor portion with hydrogen to form a minor portion mixture at about the first temperature, heating the minor portion mixture by indirect heat exchange with the hot hydrogenated stock to a second reactor inlet temperature approximately equal to the first reactor inlet temperature and then passing the minor portion to the first hydrogenation catalyst containing reactor in the absence of additional heating, the minor portion in an amount sufficient to quench the hot hydrogenated stock to a third temperature approximately equal to the first reactor inlet temperature.

Steinberg, R.M.; Deshpande, V.A.

1991-08-13T23:59:59.000Z

186

Sodium-Copper Exchange on Wyoming Montmorillonite in Chloride, Perchlorate, Nitrate, and Sulfate Solutions  

E-Print Network (OSTI)

Sodium-Copper Exchange on Wyoming Montmorillonite in Chloride, Perchlorate, Nitrate, and Sulfate. The copper exchange capacity (CuEC) and Na-Cu exchange reactions on Wyoming montmo- rillonite were studied

Sparks, Donald L.

187

Chapter Three - Magnetic Exchange Phenomena Probed by Neutron Scattering  

Science Journals Connector (OSTI)

Abstract Neutron scattering techniques are powerful tools for investigation of magnetic materials and magnetic exchange interactions on the nanoscale. Owing to the weak interaction of the neutron, results are representative of the bulk and not only comprised of surface properties. Nevertheless, due to the high atomic and magnetic contrast, high interface sensitivity is easily achieved. This chapter will review the applicability of neutron scattering techniques to the investigation magnetic exchange interactions based on two examples, interlayer exchange coupling and exchange bias in metallic multilayers. PNR will be employed to study the magnetic state of a Cu0.94Mn0.06/Co multilayer showing a temperature-dependent coupling originating from the dilute magnetic impurities. Exchange bias within mono-stoichiometric FePt3 thin films based on chemical order modulation will be investigated with PNR and diffraction techniques to elucidate the magnetic ordering on nanometer and atomic length scales. During the individual discussion of the phenomena, both interlayer exchange coupling and exchange bias will be reviewed.

Thomas Saerbeck

2014-01-01T23:59:59.000Z

188

Inorganic ion exchange evaluation and design: Silicotitanate ion exchange waste conversion  

SciTech Connect

Ion exchange materials are being evaluated for removing Cs, SR from tank waste. Thermal conversion of a variety of compositions within the Cs{sub 2}O-TiO{sub 2}-SiO{sub 2} phase diagram yielded both glass and crystalline materials, some of which show low leach rates and negligible Cs losses during heat treatment. A new material, CsTiSi{sub 2}0{sub 6}, with a structure isomorphous to pollucite (CsAlSi{sub 2}0{sub 6}) has been identified. This material represents a new class of crystalline zeolite materials which contain large amounts of titanium. Direct conversion of Cs loaded silicotitanate ion exchangers to CsTiSi{sub 2}O{sub 6} is an excellent alternative to dissolving the Cs-loaded or Cs-eluted exchangers in borosilicate glass because: CsTiSi{sub 2}O{sub 6} is formed using a simple, one step heat treatment. The unique crystalline pollucite-like structure of CsTiSi{sub 2}O{sub 6} traps Cs, and exhibits extremely low Cs leach rates. CsTiSi{sub 2}O{sub 6} is converted to solid waste at a low processing temperature of 700 to 800 C (nominal melter operating temperatures are 1150 C). CsTiSi{sub 2}0{sub 6} concentrates the waste, thus generating lower volumes of expensive HLW. Cs losses due to volatilization during processing of CsTiSi{sub 2}O{sub 6} are extremely low.

Balmer, M.L.; Bunker, B.C.

1995-03-01T23:59:59.000Z

189

Health Insurance Exchanges Key Link in a Better-Value Chain  

Science Journals Connector (OSTI)

...even as they nod in agreement over the value of exchanges. So how does the ACA envision the function and mission of exchanges, and how do exchanges affect the organization of care? Simply put, an exchange sells insurance. If it does not enroll many people, it has failed at its core mission. Under the... How does the Patient Protection and Affordable Care Act envision the function and mission of exchanges, and how do exchanges affect the organization of care? Jon Kingsdale explains.

Kingsdale J.

2010-06-10T23:59:59.000Z

190

"Building Energy Data Exchange Specification"  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Building Energy Data Exchange Specification" Building Energy Data Exchange Specification" "Version 2.3" "application/vnd.ms-excel" "Overview:" "This document describes the DOE Building Energy Data Exchange Specification (BEDES). BEDES is designed to support analysis of the measured energy performance of commercial and residential buildings, with data fields for building characteristics, efficiency measures and energy use. BEDES defines and describes these data fields and their relationships. " "BEDES is used for the DOE Building Performance Database (BPD) as well as the Standard Energy Efficiency Disclosure (SEED) platform, as shown below. Note that SEED includes additional fields that are outside BPD scope (e.g. property address and auditor contact information)."

191

Heat exchanger and water tank arrangement for passive cooling system  

DOE Patents (OSTI)

A water storage tank in the coolant water loop of a nuclear reactor contains a tubular heat exchanger. The heat exchanger has tube sheets mounted to the tank connections so that the tube sheets and tubes may be readily inspected and repaired. Preferably, the tubes extend from the tube sheets on a square pitch and then on a rectangular pitch there between. Also, the heat exchanger is supported by a frame so that the tank wall is not required to support all of its weight. 6 figures.

Gillett, J.E.; Johnson, F.T.; Orr, R.S.; Schulz, T.L.

1993-11-30T23:59:59.000Z

192

System for exchanging tools and end effectors on a robot  

DOE Patents (OSTI)

A system and method for exchanging tools and end effectors on a robot permits exchange during a programmed task. The exchange mechanism is located off the robot, thus reducing the mass of the robot arm and permitting smaller robots to perform designated tasks. A simple spring/collet mechanism mounted on the robot is used which permits the engagement and disengagement of the tool or end effector without the need for a rotational orientation of the tool to the end effector/collet interface. As the tool changing system is not located on the robot arm no umbilical cords are located on robot.

Burry, David B. (Westminster, CO); Williams, Paul M. (Lafayette, CO)

1991-02-19T23:59:59.000Z

193

System for exchanging tools and end effectors on a robot  

DOE Patents (OSTI)

A system and method for exchanging tools and end effectors on a robot permits exchange during a programmed task. The exchange mechanism is located off the robot, thus reducing the mass of the robot arm and permitting smaller robots to perform designated tasks. A simple spring/collet mechanism mounted on the robot is used which permits the engagement and disengagement of the tool or end effector without the need for a rotational orientation of the tool to the end effector/collet interface. As the tool changing system is not located on the robot arm no umbilical cords are located on robot. 12 figures.

Burry, D.B.; Williams, P.M.

1991-02-19T23:59:59.000Z

194

Net?exchange analysis of the Earth greenhouse effect increase  

Science Journals Connector (OSTI)

In this paper we propose an analysis of the greenhouse effect on the basis of a net?exchange formulation for clear sky atmospheres. This formulation allows access to exchanges beetwen the differents elements of the atmosphere (gas layers the ground and space). When the greenhouse gas concentration increases we first use a simple configuration to analyse the variations of analytic monochromatic net exchange rates. The same type of analysis is then applied to the Earth atmosphere for a clear?sky middle latitude summer configuration with an increase in water vapour of 20% at all altitudes.

Nicolas Meilhac; Jean?Louis Dufresne; Vincent Eymet; Richard Fournier

2009-01-01T23:59:59.000Z

195

Heat exchanger for fuel cell power plant reformer  

DOE Patents (OSTI)

A heat exchanger uses the heat from processed fuel gas from a reformer for a fuel cell to superheat steam, to preheat raw fuel prior to entering the reformer and to heat a water-steam coolant mixture from the fuel cells. The processed fuel gas temperature is thus lowered to a level useful in the fuel cell reaction. The four temperature adjustments are accomplished in a single heat exchanger with only three heat transfer cores. The heat exchanger is preheated by circulating coolant and purge steam from the power section during startup of the latter.

Misage, Robert (Manchester, CT); Scheffler, Glenn W. (Tolland, CT); Setzer, Herbert J. (Ellington, CT); Margiott, Paul R. (Manchester, CT); Parenti, Jr., Edmund K. (Manchester, CT)

1988-01-01T23:59:59.000Z

196

E-Print Network 3.0 - anion-exchange resin technique Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

at Urbana-Champaign Collection: Chemistry 39 9 Treatment of Metal-Bearing Effluents: Removal and Summary: anions are called anion exchangers. The ion exchange function of a...

197

Ammonium Bicarbonate Transport in Anion Exchange Membranes for Salinity Gradient Energy  

Science Journals Connector (OSTI)

Ammonium Bicarbonate Transport in Anion Exchange Membranes for Salinity Gradient Energy ... Current status of ion exchange membranes for power generation from salinity gradients ...

Geoffrey M. Geise; Michael A. Hickner; Bruce E. Logan

2013-08-22T23:59:59.000Z

198

E-Print Network 3.0 - acidic ion exchange Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Gina M. Canfield,a Summary: and other zeolites tend to exchange hydronium ions from hydro- lyzed water or from acidic hydrated metal... Sodalite ion exchange in polyethylene...

199

Condensation in horizontal heat exchanger tubes  

SciTech Connect

Many innovative reactor concepts for Generation III nuclear power plants use passive safety equipment for residual heat removal. These systems use two phase natural circulation. Heat transfer to the coolant results in a density difference providing the driving head for the required mass flow. By balancing the pressure drop the system finds its operational mode. Therefore the systems depend on a strong link between heat transfer and pressure drop determining the mass flow through the system. In order to be able to analyze these kind of systems with the help of state of the art computer codes the implemented numerical models for heat transfer, pressure drop or two phase flow structure must be able to predict the system performance in a wide parameter range. Goal of the program is to optimize the numerical models and therefore the performance of computer codes analyzing passive systems. Within the project the heat transfer capacity of a heat exchanger tube will be investigated. Therefore the tube will be equipped with detectors, both temperature and pressure, in several directions perpendicular to the tube axis to be able to resolve the angular heat transfer. In parallel the flow structure of a two phase flow inside and along the tube will be detected with the help of x-ray tomography. The water cooling outside of the tube will be realized by forced convection. It will be possible to combine the flow structure measurement with an angular resolved heat transfer for a wide parameter range. The test rig is set up at the TOPLFOW facility at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), so that it will be possible to vary the pressure between 5 and 70 bar. The steam mass content will be varied between 0 and 100 percent. The results will be compared to the large scaled Emergency Condenser Tests performed at the INKA test facility in Karlstein (Germany). The paper will explain the test setup and the status of the project will be presented. (authors)

Leyer, S.; Zacharias, T.; Maisberger, F.; Lamm, M. [AREVA NP GmbH, Paul-Gossen-Strasse 100, Erlangen, 91052 (Germany); Vallee, C.; Beyer, M.; Hampel, U. [Helmholtz-Zentrum Dresden-Rossendorf e.V., Bautzner Landstrasse 400, Dresden, 01328 (Germany)

2012-07-01T23:59:59.000Z

200

Tc-99 Ion Exchange Resin Testing  

SciTech Connect

Pacific Northwest National Laboratory was contracted by CHPRC to evaluate the release of 99Tc from spent resin used to treat water from well 299-W15-765 and stored for several years. The key questions to be answered are: 1) does 99Tc readily release from the spent ion exchange resin after being in storage for several years; 2) if hot water stripping is used to remove the co-contaminant carbon tetrachloride, will 99Tc that has been sequestered by the resin be released; and 3) can spent resin be encapsulated into a cementitious waste form; if so, how much 99Tc would be released from the weathering of the monolith waste form? The results from the long term stability leach test results confirm that the resin is not releasing a significant amount of the sequestered 99Tc, evident by the less than 0.02% of the total 99Tc loaded being identified in the solution. Furthermore, it is possible that the measured 99Tc concentration is the result of 99Tc contained in the pore spaces of the resin. In addition to these results, analyses conducted to examine the impact of hot water on the release of 99Tc suggest that only a small percentage of the total is being released. This suggest that hot water stripping to remove carbon tetrachloride will not have a significant affect on the resins ability to hold-on to sequestered 99Tc. Finally, encapsulation of spent resin in a cementitious material may be a viable disposal option, but additional tests are needed to examine the extent of physical degradation caused by moisture loss and the effect this degradation process can have on the release of 99Tc.

Valenta, Michelle M.; Parker, Kent E.; Pierce, Eric M.

2010-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Isotope Transport and Exchange within the Coso Geothermal System | Open  

Open Energy Info (EERE)

Transport and Exchange within the Coso Geothermal System Transport and Exchange within the Coso Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Isotope Transport and Exchange within the Coso Geothermal System Details Activities (1) Areas (1) Regions (0) Abstract: We are investigating the plumbing of the Coso geothermal system and the nearby Coso Hot Springs using finite element models of single-phase, variable-density fluid flow, conductive- convective heat transfer, fluid-rock isotope exchange, and groundwater residence times. Using detailed seismic reflection data and geologic mapping, we constructed a regional crosssectional model that extends laterally from the Sierra Nevada to Wildhorse Mesa, west of the Argus Range. The base of the model terminates at the brittle-ductile transition zone. A sensitivity study was

202

Minutes from the Print and Mail Managers Exchange Forum Teleconferences |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Minutes from the Print and Mail Managers Exchange Forum Minutes from the Print and Mail Managers Exchange Forum Teleconferences Minutes from the Print and Mail Managers Exchange Forum Teleconferences Minutes from the Print and Mail Managers Exchange Forum Teleconferences. Contact the Office of Administrative Management and Support at (202) 586-4318 with any questions. Last updated 04/01/13 Minutes from the March 14, 2013 Printing and Mail Teleconference Minutes from the January 10, 2013 Printing and Mail Teleconference Minutes from the November 01, 2012 Printing and Mail Teleconference Minutes from the June 28, 2012 Printing and Mail Teleconference Minutes from the May 03, 2012 Printing and Mail Teleconference Minutes from the February 23, 2012 Printing and Mail Teleconference Minutes from the October 26, 2011 Printing and Mail Teleconference

203

Exergy Effectiveness Analysis of Three-Fluid Heat Exchanger  

Science Journals Connector (OSTI)

In this paper, exergy effectiveness is defined to describe the thermodynamic ... ratio of the inlet temperature of fluids on exergy effectiveness of three-fluid heat exchangers. Furthermore, the exergy effectiven...

Deng-Fang Ruan; Xiao-Feng Yuan

2010-08-01T23:59:59.000Z

204

Effect of non-uniform exchange field in ferromagnetic graphene  

E-Print Network (OSTI)

We have presented here the consequences of the non-uniform exchange field on the spin transport issues in spin chiral configuration of ferromagnetic graphene. Taking resort to the spin orbit coupling (SOC) term and non-uniform exchange coupling term we are successful to express the expression of Hall conductivity in terms of the exchange field and SOC parameters through the Kubo formula approach. However, for a specific configuration of the exchange parameter we have evaluated the Berry curvature of the system. We also have paid attention to the study of SU(2) gauge theory of ferromagnetic graphene. The generation of anti damping spin orbit torque in spin chiral magnetic graphene is also briefly discussed.

Debashree Chowdhury; B. Basu

2015-02-16T23:59:59.000Z

205

A New Forecasting Model for USD/CNY Exchange Rate  

E-Print Network (OSTI)

This paper models the return series of USD/CNY exchange rate by considering the conditional mean and conditional volatility simultaneously. An index type functional-coefficient model is adopted to model the conditional ...

Cai, Zongwu; Chen, Linna; Fang, Ying

2012-09-18T23:59:59.000Z

206

Cation Exchange and A1 Mobilization in Soils  

Science Journals Connector (OSTI)

Predicting the equilibria of cations distributed between soil solutions and exchange sites is a classical soil chemistry problem. Interest in such cation distribution problems has been motivated by a need to i...

D. D. Richter; D. W. Johnson; K. H. Dai

1992-01-01T23:59:59.000Z

207

Hybridizing BPNN and Exponential Smoothing for Foreign Exchange Rate Prediction  

Science Journals Connector (OSTI)

A challenging task in financial market such as stock market and foreign exchange market is to predict the movement direction of financial markets so as to provide valuable decision information for investors (Lai ...

2007-01-01T23:59:59.000Z

208

Modeling of Heat Transfer in Geothermal Heat Exchangers  

E-Print Network (OSTI)

Ground-coupled heat pump (GCHP) systems have been gaining increasing popularity for space conditioning in residential and commercial buildings. The geothermal heat exchanger (GHE) is devised for extraction or injection of thermal energy from...

Cui, P.; Man, Y.; Fang, Z.

2006-01-01T23:59:59.000Z

209

Cryogenic Fluid Flow Heat Transfer in a Porous Heat Exchanger  

Science Journals Connector (OSTI)

The recent utilization of porous heat exchangers in various key industries has aroused considerable interest in the heat transfer and fluid dynamics processes in channel flows involving suction...1], suction with...

L. L. Vasiliev; G. I. Bobrova; S. K. Vinokurov

1978-01-01T23:59:59.000Z

210

Convective Heat Transfer and Fluid Dynamics in Heat Exchanger Applications  

Science Journals Connector (OSTI)

This article concerns the local structure of flow and temperature fields as well as overall heat transfer coefficients and pressure drops in flow passages of relevance for heat exchangers. Results from investi...

Bengt Sundn

1999-01-01T23:59:59.000Z

211

Fix photo here CSU Fullerton Exchange Program Application  

E-Print Network (OSTI)

Fix photo here CSU Fullerton Exchange Program Application Instructions: Don't abbreviate. Answer purposes (check one) CA resident Non-Resident F-1 Visa Student Any photo that shows your face well will do

de Lijser, Peter

212

Quality Assurance Exchange September 2005, Volume 1 Issue 2  

Energy.gov (U.S. Department of Energy (DOE))

Quality Assurance Exchange September 2005, Volume 1 Issue 2 U.S. Department of Energy, Off ice of Corporate Performance Assessment Off ice of Quality Assurance Programs (EH-31)

213

Migrant Remittances and Exchange Rate Regimes in the Developing World  

E-Print Network (OSTI)

This article argues that the international financial consequences of immigration exert a substantial influence on the choice of exchange rate regimes in the developing world. Over the past two decades, migrant remittances ...

Singer, David Andrew

214

Single- and double-charge exchange at low pion energies  

SciTech Connect

A review is given of pion single- and double-charge exchange reactions at incident energies of 25 to 65 MeV leading to isobaric analog states, and in the case of double-charge exchange leading to the ground state of the residual nucleus. The crucial role of the higher nuclear transparency at low pion energies for the analysis of the data in terms of single and double scattering is demonstrated. The large effects on double-charge exchange produced by the spatial correlations in nuclear wave functions are evident. The data on 1f{sub 7/2} nuclei at 35 MeV are used to establish the general validity of a shell-model-based two-amplitude model for these transitions. Recent measurements of the energy dependence between 25 and 65 MeV of double-charge exchange cross sections at forward angles are presented and discussed. 33 refs., 19 figs.

Baer, H.W.

1991-01-01T23:59:59.000Z

215

States Biomass/Clean Cities Information Exchange: Food and Fuel  

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

States BiomassClean Cities Information Exchange- Food and Fuel Roya Stanley, Director Iowa Office of Energy Independence August 7, 2008 2 History In 1915, 90 million acres of US...

216

Quality Assurance Exchange April 2009, Volume 5 Issue 1 | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5 Issue 1 Quality Assurance Exchange April 2009, Volume 5 Issue 1 U.S. Department of Energy Office of Quality Assurance Policy and Assistance IN THE SPOTLIGHT: GEORGE DETSIS,...

217

Cation and Anion Exchange Properties of Pillared Clays  

Science Journals Connector (OSTI)

Cation and anion pH dependent exchange processes on an Aluminium Pillared Clay (Al-PILC) and Zirconium Pillared Clay (Zr-PILC) were studied by titrating the PILCS with...

A. Dyer; T. Gallardo

1990-01-01T23:59:59.000Z

218

SECOND GENERATION REFORMS IN CHILE, POWER EXCHANGE MODEL. THE SOLUTION?  

E-Print Network (OSTI)

SECOND GENERATION REFORMS IN CHILE, POWER EXCHANGE MODEL. THE SOLUTION? David Watts Paulo Atienza to participate. Chile was the pioneer introducing this kind of reforms, through the application of a centralized

Catholic University of Chile (Universidad Católica de Chile)

219

Fabrication of Annealed Proton-Exchanged Waveguides for Vertical Integration  

E-Print Network (OSTI)

There is a drive for improving the surface uniformity of optical waveguide devices in the photonics lab. This report focuses on the exploration of annealed proton exchange (APE) waveguide fabrication on lithium niobate crystal as a method...

Webb, Jacob Douglas

2011-08-08T23:59:59.000Z

220

Condensing Heat Exchanger for Optimization of Energy Efficiency  

E-Print Network (OSTI)

out, rapid deterioration, due to acid corrosion, of the outlet duct and stack would result. With the development of the condensing heat exchanger, boiler efficiency can now exceed 90%. Approximately 1% gain in boiler efficiency can be expected...

Carrigan, J. F.; Johnson, D. W.; DiVitto, J. G.; Schulze, K. H.

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Electrical Control of Exchange Bias Mediated by Graphene  

E-Print Network (OSTI)

The role of graphene in mediating the exchange interaction is theoretically investigated when it is placed between two ferromagnetic dielectric materials. The calculation based on a tight-binding model illustrates that the magnetic interactions at the interfaces affect not only the graphene band structure but also the thermodynamic potential of the system. This induces an indirect exchange interaction between the magnetic layers that can be considered in term of an effective exchange bias field. The analysis clearly indicates a strong dependence of the effective exchange bias on the properties of the mediating layer, revealing an effective mechanism of electrical control even at room temperature. This dependence also results in qualitatively different characteristics for the cases involving mono- and bilayer graphene.

Y. G. Semenov; J. M. Zavada; K. W. Kim

2008-08-12T23:59:59.000Z

222

Reversible Guest Exchange Mechanisms in Supramolecular Host-GuestAssemblies  

SciTech Connect

Synthetic chemists have provided a wide array of supramolecular assemblies able to encapsulate guest molecules. The scope of this tutorial review focuses on supramolecular host molecules capable of reversibly encapsulating polyatomic guests. Much work has been done to determine the mechanism of guest encapsulation and guest release. This review covers common methods of monitoring and characterizing guest exchange such as NMR, UV-VIS, mass spectroscopy, electrochemistry, and calorimetry and also presents representative examples of guest exchange mechanisms. The guest exchange mechanisms of hemicarcerands, cucurbiturils, hydrogen-bonded assemblies, and metal-ligand assemblies are discussed. Special attention is given to systems which exhibit constrictive binding, a motif common in supramolecular guest exchange systems.

Pluth, Michael D.; Raymond, Kenneth N.

2006-09-01T23:59:59.000Z

223

Exchanges of Energy, Water and Carbon Dioxide Xuhui Lee (Yale...  

NLE Websites -- All DOE Office Websites (Extended Search)

esFmates of vegetaFon-air exchange and that the degree of bias is different for acFve (heat and water) and passive (CO 2 ) scalars. Horizontally Homogeneous Mesoscale Horizontal...

224

Microchannel crossflow fluid heat exchanger and method for its fabrication  

DOE Patents (OSTI)

A microchannel crossflow fluid heat exchanger and a method for its fabrication are disclosed. The heat exchanger is formed from a stack of thin metal sheets which are bonded together. The stack consists of alternating slotted and unslotted sheets. Each of the slotted sheets includes multiple parallel slots which form fluid flow channels when sandwiched between the unslotted sheets. Successive slotted sheets in the stack are rotated ninety degrees with respect to one another so as to form two sets of orthogonally extending fluid flow channels which are arranged in a crossflow configuration. The heat exchanger has a high surface to volume ratio, a small dead volume, a high heat transfer coefficient, and is suitable for use with fluids under high pressures. The heat exchanger has particular application in a Stirling engine that utilizes a liquid as the working substance. 9 figs.

Swift, G.W.; Migliori, A.; Wheatley, J.C.

1985-05-14T23:59:59.000Z

225

Microchannel crossflow fluid heat exchanger and method for its fabrication  

DOE Patents (OSTI)

A microchannel crossflow fluid heat exchanger and a method for its fabrication are disclosed. The heat exchanger is formed from a stack of thin metal sheets which are bonded together. The stack consists of alternating slotted and unslotted sheets. Each of the slotted sheets includes multiple parallel slots which form fluid flow channels when sandwiched between the unslotted sheets. Successive slotted sheets in the stack are rotated ninety degrees with respect to one another so as to form two sets of orthogonally extending fluid flow channels which are arranged in a crossflow configuration. The heat exchanger has a high surface to volume ratio, a small dead volume, a high heat transfer coefficient, and is suitable for use with fluids under high pressures. The heat exchanger has particular application in a Stirling engine that utilizes a liquid as the working substance.

Swift, G.W.; Migliori, A.; Wheatley, J.C.

1982-08-31T23:59:59.000Z

226

Technical Information Exchange on Pyrolysis Oil: Potential for...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Renewab;e Heating Oil Substation Fuel in New England Technical Information Exchange on Pyrolysis Oil: Potential for a Renewab;e Heating Oil Substation Fuel in New England This...

227

State and Local Peer Exchange | Department of Energy  

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

you can find listed below: Small group peer exchange through the Better Buildings Alliance project teams One-on-one peer matching Annual summit for state and local communities...

228

Heat Exchanger Network Targeting, Design and Analysis: The MIDAS Package  

E-Print Network (OSTI)

HEAT EXCHANGER NETWORK TARGETING, DESIGN AND ANALYSIS: THE MIDAS PACKAGE I. BARTON, D.H. JONES AND G.J. SMITH TENSA Services, Houston, Texas ICI PLC, Wilton England ABSTRACT Recent work to consolidate pinch-based procedures for targeting... was reduced to industrial practice by the U.K. major, ICI PLC. A wide range of pinch-based procedures have been developed for process energy efficiency applications. These incl~de heat exchanger network (HEN) design [2,3], distillation system...

Barton, I.; Jones, D. H.; Smith, G. J.

229

Automatic Tube Cleaning Systems for Condensers & Heat Exchangers  

E-Print Network (OSTI)

than 36 in. in diameter. Thus, mos of the ball systems are in fossil fuel, nuclear) cogeneration, and geothermal power plants. The temperature (maximum 220 0 F) and process limitations of the rubber ball material restrict the use of ball systems... of Heat Exchangers," Hydrocarbon Processing, pp. 25-27 (Jan. 1983) 7. Grande. M?? and K. SCIEah. "Automatic On-Line Mechanical Cleaning System for Condensers and Heat Exchangers," in EPRI Geothermal Conference and Yorkshop, Seminar Yorkbook (June 23...

Someah, K.

230

Cesium and Strontium Specific Exchangers for Nuclear Waste Effluent Remediation  

SciTech Connect

During the past 50 years, nuclear defense activities have produced large quantities of nuclear waste that now require safe and permanent disposal. The general procedure to be implemented involves the removal of cesium and strontium from the waste solutions for disposal in permanently vitrified media. This requires highly selective sorbents or ion exchangers. Further, at the high radiation doses present in the solution, organic exchangers or sequestrants are likely to decompose over time. Inorganic ion exchangers are resistant to radiation damage and can exhibit remarkably high selectivities. We have synthesized three families of tunnel-type ion exchangers. The crystal structures of these compounds as well as their protonated phases, coupled with ion exchange titrations, were determined and this information was used to develop an understanding of their ion exchange behavior. The ion exchange selectivities of these phases could be regulated by isomorphous replacement of the framework metals by larger or smaller radius metals. In the realm of layered compounds, we prepared alumina, silica, and zirconia pillared clays and sodium micas. The pillared clays yielded very high Kd values for Cs+ and were very effective in removing Cs+ from groundwaters. The sodium micas also had a high affinity for Cs+ but an even greater attraction for S42+. They also possess the property of trapping these ions permanently as the layers slowly decrease their interlayer distance as loading occurs. Sodium nonatitanate exhibited extremely high Kd values for Sr2+ in alkaline tank wastes and should be considered for removal of Sr2+ in such cases. For tank wastes containing complexing agents, we have found that adding Ca2+ to the solution releases the complexed Sr2+ which may then be removed with the CST exchanger.

A. Clearfield; A. I. Bortun; L. A. Bortun; E. A. Bhlume; P. Sylvester; G. M. Graziano

2000-09-01T23:59:59.000Z

231

Unambiguous exchange-correlation energy density Kieron Burke,a)  

E-Print Network (OSTI)

density approximation LDA , the conventional form is eXC unif (r) , the exchange-correlation energy the following definition of an energy density: eXC wave fn. r d3 r P r,r r r 2 r r 1 2 2 r,r s r,r r r , 2 whereUnambiguous exchange-correlation energy density Kieron Burke,a) Federico G. Cruz, and Kin-Chung Lam

Burke, Kieron

232

Fouling of carbon steel heat exchanger caused by iron bacteria  

SciTech Connect

A carbon steel heat exchanger installed in a reverse osmosis unit failed after 1 1/2 years from start-up as a result of tubes, lids, tube sheets, and connection pipes clogging from rust deposits. Chemical analysis of cooling water and scraped precipitates, as well laboratory screening of the deposits for bacteria, revealed that activity of iron-oxidizing bacteria present in cooling water could lead to heat exchanger blockage.

Starosvetsky, J.; Armon, R.; Starosvetsky, D. (Technion-Israel Inst. of Tech. (Israel)); Groysman, A.

1999-01-01T23:59:59.000Z

233

Origin of strong acidity in lanthanum-exchanged zeolites  

E-Print Network (OSTI)

of varying sizes, shapes and dimensions (8). The pore volume of zeolites is generally large, and can occupy, as in the case of zeolite Y, more than 50% of the crystal volume. Normally the zeolite channel system is filled with water and exchangeable cations... and size selectivity is characteristic of the molecular sieves (3, 5, 8, 9). The nonframework exchangable cations in the pore system can influence strongly both physical and chemical characteristics of the zeolite. In hydrated materials, these cations...

Carvajal Freese, Ralf R.

2012-06-07T23:59:59.000Z

234

Heat exchanger for reactor core and the like  

DOE Patents (OSTI)

A compact bayonet tube type heat exchanger which finds particular application as an auxiliary heat exchanger for transfer of heat from a reactor gas coolant to a secondary fluid medium. The heat exchanger is supported within a vertical cavity in a reactor vessel intersected by a reactor coolant passage at its upper end and having a reactor coolant return duct spaced below the inlet passage. The heat exchanger includes a plurality of relatively short length bayonet type heat exchange tube assemblies adapted to pass a secondary fluid medium therethrough and supported by primary and secondary tube sheets which are releasibly supported in a manner to facilitate removal and inspection of the bayonet tube assemblies from an access area below the heat exchanger. Inner and outer shrouds extend circumferentially of the tube assemblies and cause the reactor coolant to flow downwardly internally of the shrouds over the tube bundle and exit through the lower end of the inner shroud for passage to the return duct in the reactor vessel.

Kaufman, Jay S. (Del Mar, CA); Kissinger, John A. (Del Mar, CA)

1986-01-01T23:59:59.000Z

235

Desalination of brackish waters using ion-exchange media  

SciTech Connect

An environmentally friendly method and materials study for desalinating inland brackish waters (i.e., coal bed methane produced waters) using a set of ion-exchange materials is presented. This desalination process effectively removes anions and cations in separate steps with minimal caustic waste generation. The anion-exchange material, hydrotalcite (HTC), exhibits an ion-exchange capacity (IEC) of around 3 mequiv g{sup -1}. The cation-exchange material, an amorphous aluminosilicate permutite-like material, (Na{sub x}+2yAl{sub x}Si{sub 1}-xO{sub 2+y}), has an IEC of around to 2.5 mequiv g{sup -1}. These ion-exchange materials were studied and optimized because of their specific ion-exchange capacity for the ions of interest and their ability to function in the temperature and pH regions necessary for cost and energy effectiveness. Room temperature, minimum pressure column studies (once-pass through) on simulant brackish water (total dissolved solids (TDS) = 2222 ppm) resulted in water containing TDS = 25 ppm. A second once-pass through column study on actual produced water (TDS = similar to 11 000) with a high carbonate concentration used an additional lime softening step and resulted in a decreased TDS of 600 ppm.

Pless, J.D.; Philips, M.L.F.; Voigt, J.A.; Moore, D.; Axness, M.; Krumhansl, J.L.; Nenoff, T.M. [Sandia National Labs., Albuquerque, NM (United States)

2006-06-21T23:59:59.000Z

236

Desalination of brackish waters using ion exchange media.  

SciTech Connect

An environmentally friendly method and materials study for desalinating inland brackish waters (i.e., coal bed methane produced waters) using a set of ion-exchange materials is presented. This desalination process effectively removes anions and cations in separate steps with minimal caustic waste generation. The anion-exchange material, hydrotalcite (HTC), exhibits an ion-exchange capacity (IEC) of {approx} 3 mequiv g{sup -1}. The cation-exchange material, an amorphous aluminosilicate permutite-like material, (Na{sub x+2y}Al{sub x}Si{sub 1-x}O{sub 2+y}), has an IEC of {approx}2.5 mequiv g{sup -1}. These ion-exchange materials were studied and optimized because of their specific ion-exchange capacity for the ions of interest and their ability to function in the temperature and pH regions necessary for cost and energy effectiveness. Room temperature, minimum pressure column studies (once-pass through) on simulant brackish water (total dissolved solids (TDS) = 2222 ppm) resulted in water containing TDS = 25 ppm. A second once-pass through column study on actual produced water (TDS = {approx}11,000) with a high carbonate concentration used an additional lime softening step and resulted in a decreased TDS of 600 ppm.

Pless, Jason D.; Krumhansl, James Lee; Nenoff, Tina Maria; Voigt, James A.; Phillips, Mark L. F.; Axness, Marlene; Moore, Diana Lynn

2005-01-01T23:59:59.000Z

237

Multi-period design of heat exchanger networks  

Science Journals Connector (OSTI)

Heat exchanger networks are an integral part of chemical processes as they recover available heat and reduce utility consumption, thereby improving the overall economics of an industrial plant. This paper focuses on heat exchanger network design for multi-period operation wherein the operating conditions of a process may vary with time. A typical example is the hydrotreating process in petroleum refineries where the operators increase reactor temperature to compensate for catalyst deactivation. Superstructure based multi-period models for heat exchanger network design have been proposed previously employing deterministic optimisation algorithms, e.g. (Aaltola, 2002; Verheyen and Zhang, 2006). Stochastic optimisation algorithms have also been applied for the design of flexible heat exchanger networks recently (Ma et al., 2007, 2008). The present work develops an optimisation approach using simulated annealing for design of heat exchanger networks for multi-period operation. A comparison of the new optimisation approach with previous deterministic optimisation based design approaches is presented to illustrate the utilisation of simulated annealing in design of optimal heat exchanger network configurations for multi-period operation.

Muhammad Imran Ahmad; Nan Zhang; Megan Jobson; Lu Chen

2012-01-01T23:59:59.000Z

238

SILICON CARBIDE CERAMICS FOR COMPACT HEAT EXCHANGERS  

SciTech Connect

Silicon carbide (SiC) materials are prime candidates for high temperature heat exchangers for next generation nuclear reactors due to their refractory nature and high thermal conductivity at elevated temperatures. This research has focused on demonstrating the potential of liquid silicon infiltration (LSI) for making SiC to achieve this goal. The major advantage of this method over other ceramic processing techniques is the enhanced capability of making high dense, high purity SiC materials in complex net shapes. For successful formation of net shape SiC using LSI techniques, the carbon preform reactivity and pore structure must be controlled to allow the complete infiltration of the porous carbon structure which allows complete conversion of the carbon to SiC. We have established a procedure for achieving desirable carbon properties by using carbon precursors consisting of two readily available high purity organic materials, crystalline cellulose and phenolic resin. Phenolic resin yields a glassy carbon with low chemical reactivity and porosity while the cellulose carbon is highly reactive and porous. By adjusting the ratio of these two materials in the precursor mixtures, the properties of the carbons produced can be controlled. We have identified the most favorable carbon precursor composition to be a cellulose resin mass ratio of 6:4 for LSI formation of SiC. The optimum reaction conditions are a temperature of 1800 C, a pressure of 0.5 Torr of argon, and a time of 120 minutes. The fully dense net shape SiC material produced has a density of 2.96 g cm{sup -3} (about 92% of pure SiC) and a SiC volume fraction of over 0.82. Kinetics of the LSI SiC formation process was studied by optical microscopy and quantitative digital image analysis. This study identified six reaction stages and provided important understanding of the process. Although the thermal conductivity of pure SiC at elevated temperatures is very high, thermal conductivities of most commercial SiC materials are much lower due to phonon scattering by impurities (e.g., sintering aids located at the grain boundaries of these materials). The thermal conductivity of our SiC was determined using the laser flash method and it is 214 W/mK at 373 K and 64 W/mK at 1273 K. These values are very close to those of pure SiC and are much higher than those of SiC materials made by industrial processes. This SiC made by our LSI process meets the thermal properties required for use in high temperature heat exchanger. Cellulose and phenolic resin carbons lack the well-defined atomic structures associated with common carbon allotropes. Atomic-scale structure was studied using high resolution transmission electron microscopy (HRTEM), nitrogen gas adsorption and helium gas pycnometry. These studies revealed that cellulose carbon exhibits a very high degree of atomic disorder and angstrom-scale porosity. It has a density of only 93% of that of pure graphite, with primarily sp2 bonding character and a low concentration of graphene clusters. Phenolic resin carbon shows more structural order and substantially less angstrom-scale porosity. Its density is 98% of that of pure graphite, and Fourier transform analysis of its TEM micrographs has revealed high concentrations of sp3 diamond and sp2 graphene nano-clusters. This is the first time that diamond nano-clusters have been observed in carbons produced from phenolic resin. AC and DC electrical measurements were made to follow the thermal conversion of microcrystalline cellulose to carbon. This study identifies five regions of electrical conductivity that can be directly correlated to the chemical decomposition and microstructural evolution during carbonization. In Region I, a decrease in overall AC conductivity occurs due to the initial loss of the polar groups from cellulose molecules. In Region II, the AC conductivity starts to increase with heat treatment temperature due to the formation and growth of conducting carbon clusters. In Region III, a further increase of AC conductivity with increasing heat treatment temperature is obs

DR. DENNIS NAGLE; DR. DAJIE ZHANG

2009-03-26T23:59:59.000Z

239

2011 PERFORMANCE ASSESSMENT COMMUNITY OF PRACTICE TECHNICAL EXCHANGE - SUMMARY  

SciTech Connect

The Performance Assessment Community of Practice (PA CoP) was developed in 2008 to improve consistency and quality in the preparation of performance assessments (PAs) and risk assessments across the Department of Energy (DOE) Complex. The term, PA, is used to represent all of these modeling applications in this report. The PA CoP goals are to foster the exchange of information among PA practitioners and to share lessons learned from PAs conducted for DOE, commercial disposal facilities, and international entities. Technical exchanges and workshops are a cornerstone of PA CoP activities. Previous technical exchanges have addressed Engineered Barriers (2009 - http://www.cresp.org/education/workshops/pacop/), the Advanced Simulation Capability for Environmental Management and the Cementitious Barriers Partnership (2010 - http://srnl.doe.gov/copexchange/links.htm). Each technical exchange also includes summary presentations regarding activities at DOE, the Nuclear Regulatory Commission (NRC) and other organizations (e.g., International Atomic Energy Agency (IAEA)) as well as a number of presentations from selected sites to provide insight and perspective from on-going modeling activities. Through the deployment of PA Assistance Teams, the PA CoP has also been engaged in the development of new PAs across the DOE Complex. As a way of improving consistency in the preparation of new PAs, the teams provide technical advice and share experiences, noteworthy practices, and lessons learned from previous Low-Level Waste Disposal Facility Federal Review Group (LFRG) reviews. Teams have provided support for PAs at Hanford, Idaho, Paducah and Portsmouth. The third annual PA CoP Technical Exchange was held on May 25-26, 2011 in Atlanta, GA. The PA CoP Steering Committee Meeting held its first meeting on May 24 prior to the Technical Exchange. Decision making using models and software quality assurance were the topical emphasis for the exchange. A new feature at the 2011 technical exchange was the use of panel discussions to solicit feedback from regulators and practitioners. This report summarizes discussions and recommendations from the steering committee meeting and presentations and feedback obtained at the technical exchange. Appendix I includes the steering committee meeting agenda and Appendix II includes the agenda for the technical exchange and a screenshot of the presentations and video files that are available online.

Seitz, R.

2011-12-30T23:59:59.000Z

240

VONEX: A Novel Approach to Establishing Open Virtual Money Exchange Regime  

E-Print Network (OSTI)

VONEX: A Novel Approach to Establishing Open Virtual Money Exchange Regime Angelina Chow Department Establishing an open virtual money exchange regime is a novel idea but rarely discussed. This paper provides a pioneer research on virtual money exchange (VONEX) approach, aiming to facilitate the exchange of virtual

Guo, Jingzhi

Note: This page contains sample records for the topic "mercantile exchange cme" from the National Library of EnergyBeta (NLEBeta).
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241

Interpenetrating polymer network ion exchange membranes and method for preparing same  

DOE Patents (OSTI)

Interpenetrating polymer network ion exchange membranes include a microporous polymeric support film interpenetrated by an ion exchange polymer and are produced by absorbing and polymerizing monomers within the support film. The ion exchange polymer provides ion exchange ligands at the surface of and throughout the support film which have sufficient ligand mobility to extract and transport ions across the membrane.

Alexandratos, Spiro D. (Knoxville, TN); Danesi, Pier R. (Vienna, AT); Horwitz, E. Philip (Naperville, IL)

1989-01-01T23:59:59.000Z

242

Electricity Consumption of Pumps in Heat Exchanging Stations of DH Systems in China  

Science Journals Connector (OSTI)

This study analyzed the current electricity consumption of heating exchanging stations in China. By...

Lei Dong; JianJun Xia; Yi Jiang

2014-01-01T23:59:59.000Z

243

Gas exchange in terrestrial environments comes at the cost of evaporative water loss from respiratory surfaces.  

E-Print Network (OSTI)

3477 Gas exchange in terrestrial environments comes at the cost of evaporative water loss from of gas exchange, both within and among species (Lighton, 1998; Shelton and Appel, 2001; Chown, 2002). The classical pattern is that of discontinuous gas exchange, or discontinuous gas-exchange cycles (DGC; Lighton

Franz, Nico M.

244

Model based methodology development for energy recovery in flash heat exchange systems  

E-Print Network (OSTI)

Model based methodology development for energy recovery in flash heat exchange systems Problem of energy efficiency in process operations. Where heat exchange is required between two streams and where with a condensing heat exchanger can be used when heat exchange is required between two streams and where at least

McCarthy, John E.

245

Calorimetry exchange program quarterly data report, fourth quarter CY92  

SciTech Connect

The goals of the Calorimetry Sample Exchange Program are: (1) discuss measurement differences (2) review and improve analytical measurements and methods (3) discuss new measurement capabilities (4) provide data to DOE on measurement capabilities to evaluate shipper- receiver differences (5) provide characterized or standard materials as necessary for exchange participants (6) provide a measurement control program for plutonium analysis A sample Of PUO2 powder is available at each participating site for NDA measurement, including either or both calorimetry and high-resolution gamma-ray spectroscopy, the elements which are typically combined to provide a calorimetric assay of plutonium. The facilities measure the sample as frequently and to the level of precision which they desire, and then submit the data to the Exchange for analysis. The data report includes summary tables for each measurement and charts showing the performance of each laboratory. Comparisons are made to the accepted values for the exchange sample and to data previously reported by that laboratory. This information is presented, in the form of quarterly reports as this document provides and as annual reports, intended for use by Exchange participants in measurement control programs, or to indicate when bias corrections may be appropriate. No attempt, however, has been made to standardize methods or frequency of data collection, calibration, or operating procedures. Direct comparisons between laboratories may, therefore, be misleading since data have not been collected to the same precision or for the same time periods. A meeting of the participants of the Calorimetry Exchange is held annually at EG&G Mound Applied Technologies. The purposes of this meeting are to discuss measurement differences, problems, and new measurement capabilities, and to determine the additional activities needed to fulfill the goals of the Exchange.

Barnett, T.M.

1992-12-31T23:59:59.000Z

246

Localized model for systems with double-exchange coupling  

Science Journals Connector (OSTI)

Magnetic spins in crystals of mixed valence can simultaneously experience two kinds of coupling: the superexchange and the double exchange. The latter coupling, first invoked by Zener and further worked out by Anderson and Hasegawa, is mediated by additional electrons or holes introduced into the system. In the present paper an effective site-spins interaction Hamiltonian for double exchange is formulated. This Hamiltonian involves ascending powers of the bilinear interaction S?iS?j. The highest power is determined by the value of the site spin. Thus, for spin- the double exchange interaction looks like the ordinary Heisenberg-type coupling. Spin-1 Hamiltonian contains also a biquadratic coupling. Spin-32 includes a bicubic interaction, spin-2 a biquartic one, etc. It is argued that a localized description of systems with the double exchange is usually sufficient. The phase diagrams are entirely different from the one predicted by the semiclassical (large-spin) band theory proposed by de Gennes. The critical concentrations of the carriers are evaluated at T=0 K in the mean-field-theory approximation. An applied magnetic field is shown to have little influence on the strength of the double-exchange coupling. Spin configurations in the presence of the field are also discussed. Finally, a spin-wave theory for such systems is constructed.

M. Cieplak

1978-10-01T23:59:59.000Z

247

The many faces of ion-exchange resins  

SciTech Connect

Ion-exchange resins have been used commercially for over 60 years. Softening and demineralization of water for boiler feed and process use were then, and continue to be, the most familiar and widespread applications of ion-exchange resins throughout the chemical process industries (CPI). Several types of membrane-based technologies, such as electrodialysis, reverse osmosis and, more recently, electrodeionization are recognized as alternative methods for water treatment. Yet, modern versions of ion-exchange resins remain a major player in water treatment. In addition, these versatile materials can be found performing a wide range of tasks in both aqueous and nonaqueous environments. Some of these diverse applications include: acid or base catalysis; manufacture of high-purity solvents and reagent chemicals; separation of by-products of fermentation processes; deacidification of organic solvents; high-purity water production for semiconductor manufacture; recovery of valuable waste from dilute process effluents; controlled release of pharmaceutical products; and chromatography, both on the analytical and the industrial scale. The key to understanding the potential of ion-exchange resins is to look beyond their exchange and adsorptive characteristics, and to see their fundamental nature. In other words, it`s necessary to first consider them as spherical, particulate reactive polymers that perform chemical reactions.

McNutty, J.T. [Rohm and Haas Co., Philadelphia, PA (United States)

1997-06-01T23:59:59.000Z

248

Diffusional exchange of isotopes in a metal hydride sphere.  

SciTech Connect

This report describes the Spherical Particle Exchange Model (SPEM), which simulates exchange of one hydrogen isotope by another hydrogen isotope in a spherical metal hydride particle. This is one of the fundamental physical processes during isotope exchange in a bed of spherical metal particles and is thus one of the key components in any comprehensive physics-based model of exchange. There are two important physical processes in the model. One is the entropy of mixing between the two isotopes; the entropy of mixing is increased by having both isotopes randomly placed at interstitial sites on the lattice and thus impedes the exchange process. The other physical process is the elastic interaction between isotope atoms on the lattice. The elastic interaction is the cause for {beta}-phase formation and is independent of the isotope species. In this report the coupled diffusion equations for two isotopes in the {beta}-phase hydride are solved. A key concept is that the diffusion of one isotope depends not only on its concentration gradient, but also on the concentration gradient of the other isotope. Diffusion rate constants and the chemical potentials for deuterium and hydrogen in the {beta}-phase hydride are reviewed because these quantities are essential for an accurate model of the diffusion process. Finally, a summary of some of the predictions from the SPEM model are provided.

Wolfer, Wilhelm G.; Hamilton, John C.; James, Scott Carlton

2011-04-01T23:59:59.000Z

249

Ion exchange performance of commercial crystalline silicotitanates for cesium removal  

SciTech Connect

A new class of inorganic ion exchangers called crystalline silicotitanates (CST), invented by researchers at Sandia National Laboratories and Texas A&M University, has been commercialized in a joint Sandia-UOP effort. The original developmental materials exhibited high selectivity for the ion exchange of cesium, strontium, and several other radionuclides from highly alkaline solutions containing molar concentrations of Na{sup +}. The materials also showed excellent chemical and radiation stability. Together, the high selectivity and stability of the CSTs made them excellent candidates for treatment of solutions such as the Hanford tank supernates and other DOE radwastes. Sandia National Laboratories and UOP have teamed under a Cooperative Research and Development Agreement (CRADA) to develop CSTs in the powdered form and in an engineered form suitable for column ion exchange use. A continuous-flow, column ion exchange process is expected to be used to remove Cs and other radionuclides from the Hanford supernatant. The powder material invented by the Sandia and Texas A&M team consists of submicron-size particles. It is not designed for column ion exchange but may be used in other applications.

Braun, R.; Dangieri, T.J.; Fennelly, D.J. [and others

1996-03-01T23:59:59.000Z

250

DOE Hydrogen Analysis Repository: Cost Analysis of Proton Exchange Membrane  

NLE Websites -- All DOE Office Websites (Extended Search)

Cost Analysis of Proton Exchange Membrane Fuel Cell Systems for Cost Analysis of Proton Exchange Membrane Fuel Cell Systems for Transportation Project Summary Full Title: Cost Analysis of Proton Exchange Membrane (PEM) Fuel Cell Systems for Transportation Project ID: 196 Principal Investigator: Eric Carlson Keywords: Fuel cells, fuel cell vehicles (FCV), transportation, costs Purpose Assess the cost of an 80 kW direct hydrogen fuel cell system relative to the DOE 2005 target of $125/kW. The system includes the fuel cell stack and balance-of-plant (BOP) components for water, thermal, and fuel management, but not hydrogen storage. Performer Principal Investigator: Eric Carlson Organization: TIAX, LLC Address: 15 Acorn Park Cambridge, MA 02140-2328 Telephone: 617-498-5903 Email: carlson.e@tiaxllc.com Additional Performers: P. Kopf, TIAX, LLC; J. Sinha, TIAX, LLC; S. Sriramulu, TIAX, LLC

251

Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange  

Open Energy Info (EERE)

Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange on Openei Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange on Openei Abstract Though exploring for hydrothermal resources is not new, advances in exploration technologies and the pursuit of less visible resources have created a need to outline exploration best practices. This multi-year study outlines 21 geothermal exploration regions in the Western United States. These regions were developed based on the U.S. Geological Survey (USGS) physiographic regions, then adjusted to fit geothermal parameters such as differences in geologic regime, structure, heat source, surface effects

252

Microsoft Word - MS-OM-1185NEPAHeatExchanger.docx  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

MS-OM-1185 MS-OM-1185 Title: Hydrogen Peroxide Treatment of SPR Heat Exchangers BOA Description: Subcontractor shall provide all labor, supervision, materials, supplies, equipment, tools, and transportation required to treat the water side of the SPR heat exchangers. Work includes providing turnkey chemical injection equipment, chemical (hydrogen peroxide), chemical containment vessels, and fittings/piping/tubing required to connect the chemical injection equipment to the site heat exchangers. Subcontractor shall remove and clean all equipment and properly dispose of any waste materials after the work is completed. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do

253

Service Providers That Exchange Data with Portfolio Manager via Web  

NLE Websites -- All DOE Office Websites (Extended Search)

Service Providers That Exchange Data with Portfolio Manager via Service Providers That Exchange Data with Portfolio Manager via Web Services Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training Service Providers That Exchange Data with Portfolio Manager via Web Services The companies listed below use EPA's Portfolio Manager web services to deliver ENERGY STAR energy performance scores and metrics as part of their

254

Microsoft Word - EmergencyExchangeTemplatenedrevision10-clean.docx  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DEPARTMENT OF ENERGY DEPARTMENT OF ENERGY STRATEGIC PETROLEUM RESERVE (SPR) OIL EXCHANGE AGREEMENT DE-AC96-_________ This Exchange Agreement, entered into this ____ day of_____________, between the UNITED STATES OF AMERICA, acting by and through the Department of Energy, hereinafter referred to as the "GOVERNMENT" or "DOE" and_______________________, hereinafter referred to as the "Contractor." WITNESSETH: 1. AUTHORITY - That the Secretary of Energy, under the authority of the Department of Energy Organization Act (42 U.S.C. 7101 et seq.) and sections 159 and 160 of the Energy Policy and Conservation Act (42 U.S.C. 6239, 6240), having determined that the exchanging of crude oil will be advantageous to the Government and in the public interest, hereby enters into this agreement

255

May 7 - 8, 2012 NIEHS Trainer's Exchange - Final Report  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

National Trainers' Exchange for Department of National Trainers' Exchange for Department of Energy (DOE) Safety and Health Trainers Workshop Report May 7-8, 2012 Holiday Inn Knoxville Downtown World's Fair Park, Knoxville, TN 2 Table of Contents 3 Workshop Report 12 Attachment A- Workshop Agenda 14 Attachment B- Workshop Abstracts Photographs by Jim Remington, NIEHS Top: Sharon Beard, NIEHS. Bottom: Don Ellenberger, CPWR. 3 2012 National Trainers' Exchange for Department of Energy (DOE) Safety and Health Trainers BACKGROUND The National Defense Authorization Act for fiscal years 1992 and 1993 (42 USC 7274(d)) authorized the Secretary of Energy to make awards: "to provide training and education to persons who are or may be engaged in hazardous substance response or emergency response at DOE nuclear weapons facilities; and to develop response curricula

256

Technical Exchange and Cooperation Agreement between the Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technical Exchange and Cooperation Agreement between the Department Technical Exchange and Cooperation Agreement between the Department of Energy and the European Atomic Energy Community Technical Exchange and Cooperation Agreement between the Department of Energy and the European Atomic Energy Community The objective of this technical arrangement is to establish a framework for co-operation between the Parties in the field of nuclear-related technology research and development based upon mutual benefit. The co-operation is intended to occur in specific areas where the programs of the Parties complement one another as well as those in which comparability exists. 4.5.1.1.3.3_eu_agreement.pdf More Documents & Publications International_Agreements_January_2001_December_2004.pdf International Agreements Comments EM International Strategic Plan 2010-2015

257

Microsoft Word - Nano-sized Ion Exchange Particles.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

Reducing Ion Exchange Particles to Nano-Size Shows Big Potential Reducing Ion Exchange Particles to Nano-Size Shows Big Potential AIKEN, S.C. (January 30, 2012) - Sometimes bigger isn't better. Researchers at the U.S. Department of Energy's Savannah River National Laboratory have successfully shown that they can replace useful little particles of monosodium titanate (MST) with even tinier nano-sized particles, making them even more useful for a variety of applications. MST is an ion exchange material used to decontaminate radioactive and industrial wastewater solutions, and has been shown to be an effective way to deliver metals into living cells for some types of medical treatment. Typically, MST, and a modified form known as mMST developed by SRNL and Sandia National Laboratories, are in the form of fine powders, spherically-shaped particles about 1 to 10 microns in diameter

258

Large Scale Geothermal Exchange System for Residential, Office and Retail  

Open Energy Info (EERE)

Geothermal Exchange System for Residential, Office and Retail Geothermal Exchange System for Residential, Office and Retail Development Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Large Scale Geothermal Exchange System for Residential, Office and Retail Development 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 RiverHeath will be a new neighborhood, with residences, shops, restaurants, and offices. The design incorporates walking trails, community gardens, green roofs, and innovative stormwater controls. A major component of the project is our reliance on renewable energy. One legacy of the land's industrial past is an onsite hydro-electric facility which formerly powered the paper factories. The onsite hydro is being refurbished and will furnish 100% of the project's electricity demand.

259

Flow-induced vibration of component cooling water heat exchangers  

SciTech Connect

This paper presents an evaluation of flow-induced vibration problems of component cooling water heat exchangers in one of Taipower's nuclear power stations. Specifically, it describes flow-induced vibration phenomena, tests to identify the excitation mechanisms, measurement of response characteristics, analyses to predict tube response and wear, various design alterations, and modifications of the original design. Several unique features associated with the heat exchangers are demonstrated, including energy-trapping modes, existence of tube-support-plate (TSP)-inactive modes, and fluidelastic instability of TSP-active and -inactive modes. On the basis of this evaluation, the difficulties and future research needs for the evaluation of heat exchangers are identified. 11 refs., 19 figs., 3 tabs.

Yeh, Y.S.; Chen, S.S. (Taiwan Power Co., Taipei (Taiwan). Nuclear Engineering Dept.; Argonne National Lab., IL (USA))

1990-01-01T23:59:59.000Z

260

ION EXCHANGE PERFORMANCE OF TITANOSILICATES, GERMANATES AND CARBON NANOTUBES  

SciTech Connect

This report presents a summary of testing the affinity of titanosilicates (TSP), germanium-substituted titanosilicates (Ge-TSP) and multiwall carbon nanotubes (MWCNT) for lanthanide ions in dilute nitric acid solution. The K-TSP ion exchanger exhibited the highest affinity for lanthanides in dilute nitric acid solutions. The Ge-TSP ion exchanger shows promise as a material with high affinity, but additional tests are needed to confirm the preliminary results. The MWCNT exhibited much lower affinities than the K-TSP in dilute nitric acid solutions. However, the MWCNT are much more chemically stable to concentrated nitric acid solutions and, therefore, may candidates for ion exchange in more concentrated nitric acid solutions. This technical report serves as the deliverable documenting completion of the FY13 research milestone, M4FT-13SR0303061 measure actinide and lanthanide distribution values in nitric acid solutions with sodium and potassium titanosilicate materials.

Alsobrook, A.; Hobbs, D.

2013-04-24T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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261

Data Exchange (Smart Grid Project) | Open Energy Information  

Open Energy Info (EERE)

Exchange (Smart Grid Project) Exchange (Smart Grid Project) Jump to: navigation, search Project Name Data Exchange Country United Kingdom Coordinates 55.378052°, -3.435973° 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":55.378052,"lon":-3.435973,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

262

Technical Exchange and Cooperation Agreement between the Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technical Exchange and Cooperation Agreement between the Department Technical Exchange and Cooperation Agreement between the Department of Energy and the European Atomic Energy Community Technical Exchange and Cooperation Agreement between the Department of Energy and the European Atomic Energy Community The objective of this technical arrangement is to establish a framework for co-operation between the Parties in the field of nuclear-related technology research and development based upon mutual benefit. The co-operation is intended to occur in specific areas where the programs of the Parties complement one another as well as those in which comparability exists. 4.5.1.1.3.3_eu_agreement.pdf More Documents & Publications International_Agreements_January_2001_December_2004.pdf International Agreements Comments Scanned_Agreement.pdf

263

CME THEORY AND MODELS Report of Working Group D  

E-Print Network (OSTI)

and School of Physics, North-West University, Potchefstroom, South Africa 8Imperial College, Space contemporary models are highlighted. Two of these focus on how energy stored in the coronal magnetic field can corona into the advectively dominated solar wind. The section on evolution and propagation presents two

California at Berkeley, University of

264

Evaluation of fluid bed heat exchanger optimization parameters. Final report  

SciTech Connect

Uncertainty in the relationship of specific bed material properties to gas-side heat transfer in fluidized beds has inhibited the search for optimum bed materials and has led to over-conservative assumptions in the design of fluid bed heat exchangers. An experimental program was carried out to isolate the effects of particle density, thermal conductivity, and heat capacitance upon fluid bed heat transfer. A total of 31 tests were run with 18 different bed material loads on 12 material types; particle size variations were tested on several material types. The conceptual design of a fluidized bed evaporator unit was completed for a diesel exhaust heat recovery system. The evaporator heat transfer surface area was substantially reduced while the physical dimensions of the unit increased. Despite the overall increase in unit size, the overall cost was reduced. A study of relative economics associated with bed material selection was conducted. For the fluidized bed evaporator, it was found that zircon sand was the best choice among materials tested in this program, and that the selection of bed material substantially influences the overall system costs. The optimized fluid bed heat exchanger has an estimated cost 19% below a fin augmented tubular heat exchanger; 31% below a commercial design fluid bed heat exchanger; and 50% below a conventional plain tube heat exchanger. The comparisons being made for a 9.6 x 10/sup 6/ Btu/h waste heat boiler. The fluidized bed approach potentially has other advantages such as resistance to fouling. It is recommended that a study be conducted to develop a systematic selection of bed materials for fluidized bed heat exchanger applications, based upon findings of the study reported herein.

Not Available

1980-03-01T23:59:59.000Z

265

Materials, Turbomachinery and Heat Exchangers for Supercritical CO2 Systems  

SciTech Connect

The objective of this project is to produce the necessary data to evaluate the performance of the supercritical carbon dioxide cycle. The activities include a study of materials compatibility of various alloys at high temperatures, the heat transfer and pressure drop in compact heat exchanger units, and turbomachinery issues, primarily leakage rates through dynamic seals. This experimental work will serve as a test bed for model development and design calculations, and will help define further tests necessary to develop high-efficiency power conversion cycles for use on a variety of reactor designs, including the sodium fast reactor (SFR) and very high-temperature gas reactor (VHTR). The research will be broken into three separate tasks. The first task deals with the analysis of materials related to the high-temperature S-CO{sub 2} Brayton cycle. The most taxing materials issues with regard to the cycle are associated with the high temperatures in the reactor side heat exchanger and in the high-temperature turbine. The system could experience pressures as high as 20MPa and temperatures as high as 650C. The second task deals with optimization of the heat exchangers required by the S-CO{sub 2} cycle; the S-CO{sub 2} flow passages in these heat exchangers are required whether the cycle is coupled with a VHTR or an SFR. At least three heat exchangers will be required: the pre-cooler before compression, the recuperator, and the heat exchanger that interfaces with the reactor coolant. Each of these heat exchangers is unique and must be optimized separately. The most challenging heat exchanger is likely the pre-cooler, as there is only about a 40C temperature change but it operates close to the CO{sub 2} critical point, therefore inducing substantial changes in properties. The proposed research will focus on this most challenging component. The third task examines seal leakage through various dynamic seal designs under the conditions expected in the S-CO{sub 2} cycle, including supercritical, choked, and two-phase flow conditions.

Mark Anderson; Greg Nellis; Michael Corradini

2012-10-19T23:59:59.000Z

266

Supercritical Carbon Dioxide Turbo-Expander and Heat Exchangers  

Energy.gov (U.S. Department of Energy (DOE))

This fact sheet describes a supercritical carbon dioxide turbo-expander and heat exchangers project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by the Southwest Research Institute, is working to develop a megawatt-scale s-CO2 hot-gas turbo-expander optimized for the highly transient solar power plant profile. The team is also working to optimize novel printed circuit heat exchangers for s-CO2 applications to drastically reduce their manufacturing costs.

267

Brane-Bulk energy exchange and agegraphic dark energy  

E-Print Network (OSTI)

We consider the agegraphic models of dark energy in a braneworld scenario with brane-bulk energy exchange. We assume that the adiabatic equation for the dark matter is satisfied while it is violated for the agegraphic dark energy due to the energy exchange between the brane and the bulk. Our study shows that with the brane-bulk interaction, the equation of state parameter of agegraphic dark energy on the brane, $w_D$, can have a transition from normal state where $w_D >-1 $ to the phantom regime where $w_D energy always satisfies $w^{\\mathrm{eff}}_D\\geq-1$.

Ahmad Sheykhi

2010-02-06T23:59:59.000Z

268

Radiation effects on a zeolite ion exchanger and a pollucite  

SciTech Connect

Cation exchange capacity and selective Cs and Sr ion sorption measurements were found to be too insensitive to detect radiation effects on irradiated Ionsiv-IE-95 zeolite. However, leaching the zeolite while under ..gamma..-irradiation caused a modest increase in the desorption of exchangeable ions. Gamma-irradiation and subsequent leaching of a natural pollucite also slightly enhanced the leachability of this material. The increased desorption of ions from the zeolite and the enhanced leachability of the pollucite are apparently caused by a decrease in pH due to the generation of acidic species during irradiation.

Komarneni, S.; Palau, G.L.; Pillay, K.K.S.

1983-01-01T23:59:59.000Z

269

DOE/ANL/HTRI heat exchanger tube vibration data bank  

SciTech Connect

Development of a new heat exchanger tube vibration data bank at Argonne National Laboratory is described. Comprehensive case histories on heat exchangers that have experienced tube-vibration problems and units that have been trouble-free are accumulated and this information is rendered available for evaluation, improvement, and development of vibration-prediction methods and design guidelines. Discussions include difficulties in generating a data bank, data form development, and solicitation efforts. Also included are 15 case histories upon which the data bank will be built. As new case histories are received, they will be assembled and published as addenda to this report.

Halle, H.; Chenoweth, J.M.; Wambsganss, M.W.

1980-02-01T23:59:59.000Z

270

Method and solvent composition for regenerating an ion exchange resin  

DOE Patents (OSTI)

A method and composition for removing perchlorate from a highly selective ion exchange resin is disclosed. The disclosed approach comprises treating the resin in a solution of super critical or liquid carbon dioxide and one or more quaternary ammonium chloride surfactant compounds.

Even, William R. (Livermore, CA); Irvin, David J. (Livermore, CA); Irvin, Jennifer A. (Livermore, CA); Tarver, Edward E. (Livermore, CA); Brown, Gilbert M. (Knoxville, TN); Wang, James C. F. (Livermore, CA)

2002-01-01T23:59:59.000Z

271

GEA Heat Exchangers GEA Searle Cooler and Condensing Unit Ranges  

E-Print Network (OSTI)

have high efficiency EC fans as standard across the range. All our commercial unit coolers have whiteUnits GEA Searle Condensing Units are supplied as standard to a high specification with a complete controlGEA Heat Exchangers GEA Searle Cooler and Condensing Unit Ranges Top-level engineering solutions

Frandsen, Søren

272

Electron exchange between two electrodes mediated by two electroactive adsorbates  

E-Print Network (OSTI)

Electron exchange between two electrodes mediated by two electroactive adsorbates W. Schmickler for the case in which the coupling between the two adsorbates is weak and determines the overall rate, in practice between one working and one reference electrode. Functionalized adsorbates attached

Prentiss, Mara

273

CP-violating electron-nucleon interactions from leptoquark exchange  

Science Journals Connector (OSTI)

We investigate the CP-violating electron-quark interactions arising from the exchange of spin-1 and spin-0 leptoquarks coupled to the first fermion family and deduce the bounds on the CP-violating products of the effective leptoquark-fermion coupling constants from experimental limits on CP-violating electron-nucleon interactions.

Peter Herczeg

2003-12-17T23:59:59.000Z

274

Using an Emittance Exchanger as a Bunch Compressor  

SciTech Connect

An Emittance EXchanger (EEX), like a chicane, can be used for bunch compression. However, it offers a unique characteristic: the R56 term in an EEX vanishes, which decouples the final longitudinal position from the particles' energies, thereby suppressing the microbunch instability and providing a great deal of flexibility in tailoring the final particle longitudinal phase space

Carlsten, Bruce E. [Los Alamos National Laboratory; Bishofberger, Kip A. [Los Alamos National Laboratory; Duffy, Leanne D. [Los Alamos National Laboratory; Russell, Steven J. [Los Alamos National Laboratory; Yampolsky, Nikolai A. [Los Alamos National Laboratory

2011-01-01T23:59:59.000Z

275

Energy Consumption in Coded Queues for Wireless Information Exchange  

E-Print Network (OSTI)

Energy Consumption in Coded Queues for Wireless Information Exchange Jasper Goseling, Richard J customers. We use this relation to ob- tain bounds on the energy consumption in a wireless information, for example, from the observations in [3] that using network coding can reduce the energy consumption

Boucherie, Richard J.

276

Authenticated group Diffie-Hellman key exchange: theory and practice  

SciTech Connect

Authenticated two-party Diffie-Hellman key exchange allows two principals A and B, communicating over a public network, and each holding a pair of matching public/private keys to agree on a session key. Protocols designed to deal with this problem ensure A (B resp.)that no other principals aside from B (A resp.) can learn any information about this value. These protocols additionally often ensure A and B that their respective partner has actually computed the shared secret value. A natural extension to the above cryptographic protocol problem is to consider a pool of principals agreeing on a session key. Over the years several papers have extended the two-party Diffie-Hellman key exchange to the multi-party setting but no formal treatments were carried out till recently. In light of recent developments in the formalization of the authenticated two-party Diffie-Hellman key exchange we have in this thesis laid out the authenticated group Diffie-Hellman key exchange on firmer foundations.

Chevassut, Olivier

2002-10-03T23:59:59.000Z

277

Heat Transfer Characteristics of a Generalized Divided Flow Heat Exchanger  

E-Print Network (OSTI)

The concept of a "Divided-flow" heat exchanger is generalized by locating the shell inlet (or outlet) nozzle off-center such that the two shell sub-streams are unequal and traverse unequal flow paths. The governing equations for heat transfer...

Singh, K. P.

1979-01-01T23:59:59.000Z

278

CO adsorption on ion-exchanged Ru zeolite catalysts  

SciTech Connect

CO adsorption on ion-exchanged Ru zeolite catalysts, studied by IR spectroscopy, revealed the existence of three types of ruthenium which adsorbed the carbon monoxide into three different states. The ruthenium types were atomically or highly dispersed ruthenium, ruthenium clusters which formed ruthenium carbonyl, and larger (> 1 nm) particles, probably on the outer zeolite surfaces.

Goodwin, J.G. (Univ. of Pittsburgh); Naccache, G.

1980-08-01T23:59:59.000Z

279

Copper Removal from A-01 Outfall by Ion Exchange  

SciTech Connect

Chelex100, a commercially available ion exchange resin, has been identified in this study as having a significant affinity for copper and zinc in the A-01 outfall water. Removal of copper and zinc from A-01 outfall water will ensure that the outfall meets the state of South Carolina's limit on these heavy metals.

Oji, L.N.

1999-02-17T23:59:59.000Z

280

Finned Tube With Vortex Generators For A Heat Exchanger.  

DOE Patents (OSTI)

A system for and method of manufacturing a finned tube for a heat exchanger is disclosed herein. A continuous fin strip is provided with at least one pair of vortex generators. A tube is rotated and linearly displaced while the continuous fin strip with vortex generators is spirally wrapped around the tube.

Sohal, Monohar S. (Idaho Falls, ID); O'Brien, James E. (Idaho Falls, ID)

2004-09-14T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

SAFETY TRIP REPORT ON US-JAPAN EXCHANGE PROGRAM  

E-Print Network (OSTI)

SAFETY TRIP REPORT ON US-JAPAN EXCHANGE PROGRAM (FuY 2007) #12;Report on the 12th Meeting of the Joint Working Group of the U.S.-Japan Coordinating Committee of Fusion Energy on Safety in Inter-Institutional Collaborations (U.S.-Japan Safety Monitoring Program) Meeting in Japan, March 9-22, 2008 #12;A. PURPOSE

Princeton Plasma Physics Laboratory

282

Ion Exchange Membrane Cathodes for Scalable Microbial Fuel Cells  

Science Journals Connector (OSTI)

Ion Exchange Membrane Cathodes for Scalable Microbial Fuel Cells ... The optimum amount of graphite fibers needed for these brush electrodes has not yet been optimized, and the cathode remains the greatest challenge for MFC designs. ... Different catalyst locations (inside versus outside) and loadings, specific surface areas, and solution chemistry (solution conductivity) were examined to optimize performance. ...

Yi Zuo; Shaoan Cheng; Bruce E. Logan

2008-08-13T23:59:59.000Z

283

Communication Lineshapes of spin exchange broadened EPR spectra  

E-Print Network (OSTI)

Communication Lineshapes of spin exchange broadened EPR spectra Miroslav Peric* and Barney L. Bales- termination of EPR parameters even though they are accessible using conventional approaches, (2) increased) access to EPR parameters otherwise not readily ob- tainable. Item (1) has two aspects. First, each

Bales, Barney

284

Dynamers: Polyacylhydrazone reversible covalent polymers, component exchange, and constitutional diversity  

Science Journals Connector (OSTI)

...UV-visible absorption spectra of P1C (?), P2C (?), and C () in DMSO. (b) UV-visible...reaction at 75C in DMSO for 12 h giving P2C.(Inset) Rate of dialdehyde exchange...found: C 61.97, H 4.62, N 18.76. P2C. To isoterephthalic carboxylic acid dihydrazide...

Williams G. Skene; Jean-Marie P. Lehn

2004-01-01T23:59:59.000Z

285

ORIGINAL PAPER Impacts of ocean acidification on respiratory gas exchange  

E-Print Network (OSTI)

ORIGINAL PAPER Impacts of ocean acidification on respiratory gas exchange and acid­base balance / Revised: 11 April 2012 / Accepted: 14 April 2012 ? Springer-Verlag 2012 Abstract The oceanic carbonate Gill HCO3 - uptake Introduction The earth's oceanic carbonate system (partial pressure of CO2, p

Grosell, Martin

286

The Trilemma in History: Tradeoffs among Exchange Rates,  

E-Print Network (OSTI)

up. This is the trilemma. If monetary policy activism (3) is taken to mean the ability to drive local the objective. Despite the clarity and simplicity of this prediction, one is surprised by the frequency an indicator variable, should the exchange rate regime be classified by it

Sadoulet, Elisabeth

287

VT Exchange Program in South Africa University of  

E-Print Network (OSTI)

VT Exchange Program in South Africa University of the Free State Jim McKenna jamckenn@vt.edu http://www.ufs.ac.za/ #12;Republic of South Africa South African Provinces Fly into Bloemfontein in the Free State #12;Kruger National Park #12;Travels in South Africa Cape Town & Stellenbosch #12;

Buehrer, R. Michael

288

APPLICATION INSTRUCTIONS FOR THE UNIVERSITY UTRECHT (UU) EXCHANGE PROGRAM  

E-Print Network (OSTI)

APPLICATION INSTRUCTIONS FOR THE UNIVERSITY UTRECHT (UU) EXCHANGE PROGRAM 1. Complete pages 1 and 2 in to Binghamton's Office of International Programs. Do not send anything directly to University Utrecht. Note and there is time to make the arrangements with University Utrecht. There is a $25 late application fee. 9/14/12 #12

Suzuki, Masatsugu

289

Department of Industrial Engineering Spring 2011 African Climate Exchange II  

E-Print Network (OSTI)

PENNSTATE Department of Industrial Engineering Spring 2011 African Climate Exchange II Overview Mr. Combining with a Mechanical Engineering team in Spring 2011, the goal was to work with the M.E. team while Engineering team to establish a facility around the Injera machine that was previously built in Fall 2010

Demirel, Melik C.

290

Surface Exchange and Bulk Diffusivity of LSCF as SOFC Cathode: Electrical Conductivity Relaxation and Isotope Exchange Characterizations  

SciTech Connect

The oxygen diffusion coefficient (D) and surface exchange coefficient (k) of a typical SOFC cathode material, La{sub 0.6}Sr{sub 0.4}Co{sub 0.2}Fe{sub 0.8}O{sub 3-?} (LSCF) were characterized by both electrical conductivity relaxation (ECR) and oxygen isotope exchange (IE) methods. Conductivity relaxation experiments were conducted at 800C for small step changes in partial pressure of oxygen (P{sub O{sub 2}} ), both decreasing and increasing, from 0.02 atm to 0.20 atm. The results revealed P{sub O{sub 2}} dependent hysteresis with the reduction process requiring more equilibration time than oxidation. Analysis of the experimental data indicated that the surface exchange coefficient is a function of the final oxygen partial pressure in an isothermal system. In addition, both forward and backward oxygen reduction reaction constants, which are vital for the fundamental understanding of SOFC cathode reaction mechanisms, are investigated based on the relationship between surface exchange coefficient and P{sub O{sub 2}} . The direct comparisons between the results from both ECR and IE were presented and the possible experimental errors in both methods were discussed.

Li, Yihong; Gerdes, Kirk; Horita, Teruhisa; Liu, Xingbo

2013-05-05T23:59:59.000Z

291

Heat Exchanger Monitoring and Its Application to Cleaning and Antifoulant Use  

E-Print Network (OSTI)

of heat exchanger monitoring, the development of an optimum cleaning strategy and the use of antifoulants. This paper presents a brief overview of the heat exchanger monitoring procedure, and through examples, it shows the incentives of monitoring...

Garcia, E.; Leach, S. H.; VanNostrand, W. L.

1983-01-01T23:59:59.000Z

292

Characteristics of fluid flow and heat transfer in a fluidized heat exchanger with circulating solid particles  

Science Journals Connector (OSTI)

The commercial viability of heat exchanger is mainly dependent on its long- ... loss and degrades the thermal performance of a heat exchanger. An experimental study was performed to investigate the characteristic...

Soo Whan Ahn; ByungChang Lee; WonCheol Kim; Myung- Whan Bae

2002-09-01T23:59:59.000Z

293

Heat transfer effectiveness of three-fluid separated heat pipe exchanger  

Science Journals Connector (OSTI)

A heat transfer model for three-fluid separated heat pipe exchanger was analyzed, and the temperature transfer matrix for general three-fluid separated heat exchanger working in parallel-flow or counter- ... It w...

Chengming Shi; Yang Wang; Ying Yang; Quan Liao

2011-02-01T23:59:59.000Z

294

Essays in Applied Macroeconomics: Asymmetric Price Adjustment, Exchange Rate and Treatment Effect  

E-Print Network (OSTI)

in weekly retail gasoline prices Chapter III discusses the relationship between fiscal deficit and exchange rate. Economic theory predicts that fiscal deficits can significantly affect real exchange rate movements, but existing empirical evidence reports...

Gu, Jingping

2009-05-15T23:59:59.000Z

295

E-Print Network 3.0 - air-sea gas exchange Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

127 1 Problem Set 3: MAE 127 Summary: and 3 look at the problem of estimating air-sea CO2 gas exchange. The gas transfer velocity defining air-sea... CO2 exchange is a function...

296

Hydrogen Bonding, H-D Exchange, and Molecular Mobility in Thin...  

NLE Websites -- All DOE Office Websites (Extended Search)

Bonding, H-D Exchange, and Molecular Mobility in Thin Water Films on TiO2(110). Hydrogen Bonding, H-D Exchange, and Molecular Mobility in Thin Water Films on TiO2(110). Abstract:...

297

Investigating the Use of Ion Exchange Resins for Processing Biodiesel Feedstocks  

E-Print Network (OSTI)

Ion exchange resins, commonly used in water treatment, demonstrate promise for the production of biodiesel from biomass feedstocks. The goal of this presented PhD research is to investigate novel uses of ion exchange resins for processing biodiesel...

Jamal, Yousuf 1973-

2012-11-27T23:59:59.000Z

298

Ran's C-terminal, Basic Patch, and Nucleotide Exchange Mechanisms in Light of a Canonical  

E-Print Network (OSTI)

Ran's C-terminal, Basic Patch, and Nucleotide Exchange Mechanisms in Light of a Canonical Structure's basic patch and C-terminal switch to nucleotide exchange and effector binding. Other core components

Liu, Jun

299

Reducing Ventilation Energy Demand by Using Air-to-Earth Heat Exchangers  

Science Journals Connector (OSTI)

Air-to-Earth heat exchangers (earth tubes) utilize the fact that the temperature in the ground is relatively constant during the year. By letting the air travel through an air-to-earth heat exchanger before re...

Hans Havtun; Caroline Trnqvist

2013-01-01T23:59:59.000Z

300

Impact of a Health Information Exchange on Resource Use and Medicare-Allowable Reimbursements at 11 Emergency Departments in a Midsized City  

E-Print Network (OSTI)

EC, et al. Health information exchange reduces repeatedal. Primer in health information Res. 2013;2(1):21. exchange12. Halamka JD. Health information exchange for emergency

Saef, Steven H.; Melvin, Cathy L.; Carr, Christine M.

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Liquid Salt Heat Exchanger Technology for VHTR Based Applications  

SciTech Connect

The objective of this research is to evaluate performance of liquid salt fluids for use as a heat carrier for transferring high-temperature process heat from the very high-temperature reactor (VHTR) to chemical process plants. Currently, helium is being considered as the heat transfer fluid; however, the tube size requirements and the power associated with pumping helium may not be economical. Recent work on liquid salts has shown tremendous potential to transport high-temperature heat efficiently at low pressures over long distances. This project has two broad objectives: To investigate the compatibility of Incoloy 617 and coated and uncoated SiC ceramic composite with MgCl2-KCl molten salt to determine component lifetimes and aid in the design of heat exchangers and piping; and, To conduct the necessary research on the development of metallic and ceramic heat exchangers, which are needed for both the helium-to-salt side and salt-to-process side, with the goal of making these heat exchangers technologically viable. The research will consist of three separate tasks. The first task deals with material compatibility issues with liquid salt and the development of techniques for on-line measurement of corrosion products, which can be used to measure material loss in heat exchangers. Researchers will examine static corrosion of candidate materials in specific high-temperature heat transfer salt systems and develop an in situ electrochemical probe to measure metallic species concentrations dissolved in the liquid salt. The second task deals with the design of both the intermediate and process side heat exchanger systems. Researchers will optimize heat exchanger design and study issues related to corrosion, fabrication, and thermal stresses using commercial and in-house codes. The third task focuses integral testing of flowing liquid salts in a heat transfer/materials loop to determine potential issues of using the salts and to capture realistic behavior of the salts in a small scale prototype system. This includes investigations of plugging issues, heat transfer, pressure drop, and the corrosion and erosion of materials in the flowing system.

Mark Anderson; Kumar Sridhara; Todd Allen; Per Peterson

2012-10-11T23:59:59.000Z

302

A laboratory exercise using a physical model for demonstrating countercurrent heat exchange  

E-Print Network (OSTI)

was wrapped in insulation (a soft closed cell foam such asfoam before the entire exchanger was wrapped in insulation.

Loudon, Catherine; Davis-Berg, Elizabeth C; Botz, Jason T

2012-01-01T23:59:59.000Z

303

Metrics for the cost of proprietary information exchange languages in intelligent systems  

Science Journals Connector (OSTI)

The increasing number of intelligent software components is accompanied by an increasing number of proprietary information exchange languages between components. One of the challenges for the smart technology worker is to achieve intelligent system component ... Keywords: information, information exchange languages, information exchange standards, intelligent system components, intelligent systems, interoperability, interoperability cost metrics, interoperability costs, interoperability metrics, interoperability risk metrics, metrics, proprietary exchange languages, return on investment, standard languages, standards

John Horst; Nathan Hartman; George Wong

2010-09-01T23:59:59.000Z

304

Mercury Exchange Program Summary: The Office of Research Safety (ORS) proudly presents  

E-Print Network (OSTI)

Mercury Exchange Program Summary: The Office of Research Safety (ORS) proudly presents the Mercury Exchange Program. This is a great program that enables laboratories to exchange their intact mercury thermometers, manometers, and other mercury-containing devices for non-mercury devices at no cost. The key

Duchowski, Andrew T.

305

Model-driven rule-based mediation in XML data exchange  

Science Journals Connector (OSTI)

XML data exchange has become ubiquitous in Business to Business (B2B) collaborations. Automating as much as possible the exchange of XML data between enterprise systems is a key requirement for ensuring agile interoperability and scalability in B2B collaborations. ... Keywords: XML data exchange, data mediation, semantic mapping

Yongxin Liao; Dumitru Roman; Arne J. Berre

2010-10-01T23:59:59.000Z

306

Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean  

E-Print Network (OSTI)

Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation and ocean. Stocker (2008), Modeled natural and excess radiocarbon: Sensitivities to the gas exchange formulation descriptions of the air-sea gas exchange the models produce similar column inventories for excess 14 C among

Fischlin, Andreas

307

PROTON EXCHANGE MEMBRANE FUEL CELL OPERATION AND DEGRADATION IN SHORT-CIRCUIT  

E-Print Network (OSTI)

PROTON EXCHANGE MEMBRANE FUEL CELL OPERATION AND DEGRADATION IN SHORT-CIRCUIT R.E. Silvaa, b, d , F exchange membrane fuel cells, short circuit, degradation mechanism, electrochemical impedance spectroscopy an electrical short circuit of a proton exchange membrane fuel cell stack. The physical quantities in the fuel

Boyer, Edmond

308

How patterns support computer-mediated exchange of knowledge-in-use  

Science Journals Connector (OSTI)

In times of knowledge exchange across geographical and temporal borders, the question arises as to how not only explicit or factual knowledge can be exchanged over distance, but also knowledge-in-use, with its high amount of tacit knowledge. This article ... Keywords: Computer-mediated, Knowledge exchange, Knowledge-in-use, Patterns, Schema theory

Franziska Bokhorst; Johannes Moskaliuk; Ulrike Cress

2014-02-01T23:59:59.000Z

309

Fabrication of Annealed Proton-Exchanged Waveguides Vertically Integrated with Chalcogenide Waveguides  

E-Print Network (OSTI)

...................................................... 25 B.1. Soft Proton Exchange .................................................... 25 B.2. Proton Exchange in Benzoic Acid Vapor ...................... 25 B.3. Annealed Proton Exchange ........................................... 26 B... Page C.2. Anneal Depth Model ..................................................... 30 C.3. Bidimensional Hydrogen Concentration Model ............ 32 C.4. Mode Profile Simulations .............................................. 35...

Macik, Dwayne

2012-10-19T23:59:59.000Z

310

ANSI Summary of US-China Exchange on EV Standardization  

NLE Websites -- All DOE Office Websites (Extended Search)

ANSI Summary of US-China Exchange on EV ANSI Summary of US-China Exchange on EV Standardization Presented by: Jim McCabe Senior Director, Standards Facilitation American National Standards Institute US.-China Electric Vehicles and Battery Technology Workshop August 23, 2012 ANSI EVSP Roadmap | US-China EV and Battery Technology Workshop Background - Why the Need for a U.S. Standardization Roadmap for EVs?  Many U.S. based standards developing organizations (SDOs) produce globally relevant standards following an open, consensus-based process (SAE, UL, NFPA, IEEE, and others)  A standardization roadmap would . . . Maximize coordination among SDOs and provide guidance on standards participation and progress  Enable the U.S. to speak more coherently with international partners

311

Secure password-based authenticated key exchange for web services  

SciTech Connect

This paper discusses an implementation of an authenticated key-exchange method rendered on message primitives defined in the WS-Trust and WS-SecureConversation specifications. This IEEE-specified cryptographic method (AuthA) is proven-secure for password-based authentication and key exchange, while the WS-Trust and WS-Secure Conversation are emerging Web Services Security specifications that extend the WS-Security specification. A prototype of the presented protocol is integrated in the WSRF-compliant Globus Toolkit V4. Further hardening of the implementation is expected to result in a version that will be shipped with future Globus Toolkit releases. This could help to address the current unavailability of decent shared-secret-based authentication options in the Web Services and Grid world. Future work will be to integrate One-Time-Password (OTP) features in the authentication protocol.

Liang, Fang; Meder, Samuel; Chevassut, Olivier; Siebenlist, Frank

2004-11-22T23:59:59.000Z

312

Ion exchange phase transitions in "doped" water--filled channels  

E-Print Network (OSTI)

Ion transport through narrow water--filled channels is impeded by a high electrostatic barrier. The latter originates from the large ratio of the dielectric constants of the water and a surrounding media. We show that ``doping'', i.e. immobile charges attached to the walls of the channel, substantially reduces the barrier. This explains why most of the biological ion channels are ``doped''. We show that at rather generic conditions the channels may undergo ion exchange phase transitions (typically of the first order). Upon such a transition a finite latent concentration of ions may either enter or leave the channel, or be exchanged between the ions of different valences. We discuss possible implications of these transitions for the Ca-vs.-Na selectivity of biological Ca channels. We also show that transport of divalent Ca ions is assisted by their fractionalization into two separate excitations.

J. Zhang; A. Kamenev; B. I. Shklovskii

2005-10-12T23:59:59.000Z

313

Measuring and Modeling Component and Whole-System Carbon Exchange  

SciTech Connect

We measured ecosystem/atmospheric carbon exchange through a range of methods covering a range of scales. We measured carbon (C) pool and flux for a number of previously poorly quantified ecosystems, developed measurement and modeling methods, and applied these to substantially increase the accuracy and reduce uncertainty in ecosystem/atmospheric C exchange at a range of scales. It appears most upland forests are weak to strong carbon sinks, and status depends largely on disturbance history and age. Net flux from wetland ecosystems appears to be from weak sinks to moderate sources of C to the atmosphere. We found limited evidence for a positive feedback of warming/drying to increased ecosystem C emissions. We further developed multi-source integration and modeling methods, including multiple towers, to scale estimates to landscapes and larger regions.

Paul Bolstad

2006-11-01T23:59:59.000Z

314

Exchange rate effect on carbon credit price via energy markets  

Science Journals Connector (OSTI)

Abstract This paper examines the impact of currency exchange rates on the carbon market. We scrutinize this effect through the European Union Emission Trading Scheme (EU-ETS), which primarily uses two substitutable fossil energy inputs for the generation of electricity: coal and natural gas. The European coal market is directly driven by global coal markets that are denominated in USD, whereas, natural gas is mainly imported from Russia and is denominated in Euros. The impulse response functions of a Structural Vector Autoregression (SVAR) model demonstratethat a shock in the Euro/USD exchange rate can be transmitted through the channel of energy substitution between coal and natural gas, and influence on the carbon credit market.

Jongmin Yu; Mindy L. Mallory

2014-01-01T23:59:59.000Z

315

Nuclear Saturation with In-Medium Meson Exchange Interactions  

SciTech Connect

We show that the assumption of dropping meson masses together with conventional many-body effects, implemented in the relativistic Dirac-Brueckner formalism, explains nuclear saturation. We use a microscopic model for correlated 2{pi} exchange and include the standard many-body effects on the in-medium pion propagation, which initially increase the attractive nucleon-nucleon (NN ) potential with density. For the vector meson exchanges in both the {pi}{pi} and NN sector, we assume Brown-Rho scaling which{emdash}in concert with {open_quotes}chiral{close_quotes} {pi}{pi} contact interactions{emdash}reduces the attraction at higher densities. {copyright} {ital 1999} {ital The American Physical Society}

Rapp, R.; Durso, J.W.; Brown, G.E. [Department of Physics, SUNY at Stony Brook, Stony Brook, New York 11794-3800 (United States)] [Department of Physics, SUNY at Stony Brook, Stony Brook, New York 11794-3800 (United States); Machleidt, R. [Department of Physics, University of Idaho, Moscow, Idaho 83844 (United States)] [Department of Physics, University of Idaho, Moscow, Idaho 83844 (United States); Durso, J.W. [Physics Department, Mount Holyoke College, South Hadley, Massachusetts 01075 (United States)] [Physics Department, Mount Holyoke College, South Hadley, Massachusetts 01075 (United States)

1999-03-01T23:59:59.000Z

316

Nominal and Real Effective Exchange Rate for Bosnia and Herzegovina  

Science Journals Connector (OSTI)

This paper is presenting the overview of theoretic approach to Real Effective Exchange Rate (REER) and Nominal Effective Exchange Rate (NEER) indicators calculation for Bosnia and Herzegovina. Special attention is dedicated to statistical difficulties in calculation and still limited implementation of this approach in Bosnia and Herzegovina. NEER and REER indices are indicators by themselves that BH has to work a lot to improve its competitiveness position. It is a widely known statement that a country's competitiveness improves when the relative price of its tradable goods declines. BH mostly trade with its raw materials, which are mostly natural wealth of the county like wood, coal and aluminium, so this cannot be a long-term and permanent solution for the country.

Sandra Hlivnjak

2009-01-01T23:59:59.000Z

317

Oscillating flow in a stirling engine heat exchanger  

Science Journals Connector (OSTI)

Three heat exchangers exist in modern Stirling engines: a heater, a cooler, and a regenerator. Here a study that deals principally with tubular heaters and coolers is carried out. The calculation procedure for the oscillating flow heat transfer is presented. Literature sources are studied to find the most suitable correlations by comparing them to each other and to the classical turbulent flow correlations encountered in the literature. The enhancement of heat transfer by means of a few circumferential slots inside the tubes and the pressure losses of oscillatory flow are discussed. Non-circular cross-section conduits with rectangular and triangular cross-sections are investigated and compared to the smooth circular tubes. The increment of the performance of an idealised Stirling engine with slotted heat exchanger tubes is compared to the case with smooth ones. The ratio of the gain in the shaft power and pumping losses is 2.22. The Carnot efficiency increment is 2.7%.

M. Kuosa; K. Saari; A. Kankkunen; T.-M. Tveit

2012-01-01T23:59:59.000Z

318

Exchange coupling in metals as understood then and now  

SciTech Connect

The first US magnetism conference occurred in 1952 and featured an invited session on exchange coupling in metals with Zener, Slater, Wohlfarth and Van Vleck speaking. All were concerned with intra- and interatomic exchange with Zener discussing coupling via conduction electron polarization while Wohlfarth and Slater were preoccupied with itinerant ferromagnetism. Van Vleck verbalized the Hubbard Hamiltonian (prior to its derivation). That meeting may be viewed as the ultimate discussion of magnetism prior to modern day computation and many of the ideas expressed there underlie our computational activities today. Solutions of the Hubbard Hamiltonian and electronic structure calculations, as applied to magnetism, come to mind. We will concentrate on the latter here, since solving the Hubbard Hamiltonian will be of great concern elsewhere in this meeting, and we will attempt to juxtapose current findings with some of the thoughts of that pioneering meeting. 30 refs., 5 figs.

Watson, R.E. (Brookhaven National Lab., Upton, NY (USA))

1989-01-01T23:59:59.000Z

319

Formation of Cooper pairs as a consequence of exchange interaction  

E-Print Network (OSTI)

Pairing of two electrons with antiparallel spins may lead to energy minimization of each of the paired electrons. Thus the exchange interaction causes a bond between two valence electrons in a crystal. This can be proved analyzing the energy of each valence electron in the field of the one-valent metallic crystal on assumption that all other kinds of magnetic spin ordering in the crystal are negligible.

Dolgopolov, Stanislav

2015-01-01T23:59:59.000Z

320

Essays on Real Exchange Rates and Theoretical Monetary Aggregation  

E-Print Network (OSTI)

of Philosophy Committee members William A. Barnett, Chairperson Shu Wu John Keating Jianbo Zhang Yaozhong Hu Date defended: April 1, 2014 The Dissertation Committee for Mingming Zheng certifies that this is the approved version of the following dissertation...Essays on Real Exchange Rates and Theoretical Monetary Aggregation By Mingming Zheng Submitted to the Department of Economics and the Graduate Faculty of the University of Kansas in partial fulfillment of the requirements for the degree of Doctor...

Zheng, Mingming

2014-05-31T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Electrodeposition of microparticles on polarized ion exchange membranes  

SciTech Connect

The use of ion exchange membranes to extract microparticles from an aqueous solution is considered. The efficiency of removing negatively charged aerosil particles depends substantially on the nature of the membrane located at the anode. It has been established that besides an increase in the electric field intensity the principal factor ensuring an increase in the efficiency of purifying a solution by electrodeposition of microparticles on a membrane surface is a reduction in the flowrate relative to the membrane surface.

Verbich, S.V.; Ponomarev, M.I.; Grebenyuk, V.D.; Dukhin, S.S.

1986-11-01T23:59:59.000Z

322

Process Heat Exchanger Options for Fluoride Salt High Temperature Reactor  

SciTech Connect

The work reported herein is a significant intermediate step in reaching the final goal of commercial-scale deployment and usage of molten salt as the heat transport medium for process heat applications. The primary purpose of this study is to aid in the development and selection of the required heat exchanger for power production and process heat application, which would support large-scale deployment.

Piyush Sabharwall; Eung Soo Kim; Michael McKellar; Nolan Anderson

2011-04-01T23:59:59.000Z

323

Intergroup Differences and Its Impact on Professional Exchanges  

E-Print Network (OSTI)

Torres Gwendolyn Webb-Hasan Robin Autenrieth Head of Department, Fredrick M. Nafukho August 2012 Major Subject: Educational Administration iii ABSTRACT Intergroup Differences and Its Impact on Professional Exchanges. (August 2012) Eddie Muzquiz.... Torres, Dr. Autenrieth, and Dr. Webb-Hasan, for their guidance and support throughout the course of this research. I would also like to thank Rose Narvaez, my colleague and friend, for her support and for all of the time that we spent together working...

Rodriguez, Eddie

2012-10-19T23:59:59.000Z

324

Ion-Exchange Membranes in the Chemical Process Industry  

Science Journals Connector (OSTI)

Other applications of ion-exchange membranes are still in an early state of their development, such as the redox flow battery. ... (40) More recently, interest in electrodialysis as a flow battery has increased and will be briefly discussed in the following. ... One is based on a reversal of regular electrodialysis and is referred to as concentration flow battery,(40) and the other is based on reversal of electrodialysis with bipolar membranes and is referred to as neutralization flow battery. ...

Heiner Strathmann; Andrej Grabowski; Gerhart Eigenberger

2013-03-13T23:59:59.000Z

325

Formation of Cooper pairs as a consequence of exchange interaction  

E-Print Network (OSTI)

Pairing of two electrons with antiparallel spins may lead to energy minimization of each of the paired electrons. Thus the exchange interaction causes a bond between two valence electrons in a crystal. This can be proved analyzing the energy of each valence electron in the field of the one-valent metallic crystal on assumption that all other kinds of magnetic spin ordering in the crystal are negligible.

Stanislav Dolgopolov

2015-01-15T23:59:59.000Z

326

A Zero Emission Mechanical Seal with Integral Micro Heat Exchanger  

E-Print Network (OSTI)

/689,406) with an internal heat exchanger within the body of the mating ring that channels a coolant toward the interface to effectively cool the seal faces. The coolant may be either liquid or gas, such as instrument air. This research is in part supported by a...An Industrial Zero Emission Seal with Improved Heat Transfer Characteristics Michael Khonsari Dow Chemical Endowed Chair in Rotating Machinery and Professor Center for Rotating Machinery Department of Mechanical Engineering Louisiana State...

Khonsari, M.

2005-01-01T23:59:59.000Z

327

Fouling of HVAC fin and tube heat exchangers  

SciTech Connect

Fin and tube heat exchangers are used widely in residential, commercial and industrial HVAC applications. Invariably, indoor and outdoor air contaminants foul these heat exchangers. This fouling can cause decreased capacity and efficiency of the HVAC equipment as well as indoor air quality problems related to microbiological growth. This paper describes laboratory studies to investigate the mechanisms that cause fouling. The laboratory experiments involve subjecting a 4.7 fins/cm (12 fins/inch) fin and tube heat exchanger to an air stream that contains monodisperse particles. Air velocities ranging from 1.5-5.2 m/s (295 ft/min-1024 ft/min) and particle sizes from 1--8.6 {micro}m are used. The measured fraction of particles that deposit as well as information about the location of the deposited material indicate that particles greater than about 1 {micro}m contribute to fouling. These experimental results are used to validate a scaling analysis that describes the relative importance of several deposition mechanisms including impaction, Brownian diffusion, turbophoresis, thermophoresis, diffusiophoresis, and gravitational settling. The analysis is extended to apply to different fin spacings and particle sizes typical of those found in indoor air.

Siegel, Jeffrey; Carey, Van P.

2001-07-01T23:59:59.000Z

328

Electron assisted neutron exchange process in solid state environment  

E-Print Network (OSTI)

Electron assisted neutron exchange process in solid state environment is investigated. It is shown that if a metal is irradiated with free electrons then the $e+$ $_{Z}^{A_{1}}X+$ $_{Z}^{A_{2}}X\\rightarrow e^{\\prime }+$ $% _{Z}^{A_{1}-1}X+$ $_{Z}^{A_{2}+1}X+\\Delta $ electron assisted neutron exchange process has measurable probability even in the case of slow electrons of energy much less than the reaction energy $\\Delta $. The transition probability per unit time, the cross section of the process and the yield in an irradiated sample are determined in the Weisskopf and long wavelength approximations and in the single particle shell model. Numerical data for the $e+$ $_{28}^{A_{1}}Ni+$ $_{28}^{A_{2}}Ni\\rightarrow e^{\\prime }+ $ $_{28}^{A_{1}+1}Ni+$ $_{28}^{A_{2}-1}Ni+\\Delta $ and the $e+$ $% _{46}^{A_{1}}Pd+$ $_{46}^{A_{2}}Pd\\rightarrow e^{\\prime }+$ $% _{46}^{A_{1}+1}Pd+$ $_{46}^{A_{2}-1}Pd+\\Delta $ electron assisted neutron exchange reactions are also presented.

Pter Klmn; Tams Keszthelyi

2013-12-19T23:59:59.000Z

329

Energy exchange between two orthogonally polarized waves by cascading of two quasi-phase-matched quadratic processes  

Science Journals Connector (OSTI)

We demonstrate energy exchange between two orthogonally polarized optical waves as a consequence of a two-color multistep parametric interaction. The energy exchange results from...

Johnston, Benjamin F; Dekker, Peter; Saltiel, Solomon M; Kivshar, Yuri S; Withford, Michael J

2007-01-01T23:59:59.000Z

330

Secondary heat exchanger design and comparison for advanced high temperature reactor  

SciTech Connect

Next generation nuclear reactors such as the advanced high temperature reactor (AHTR) are designed to increase energy efficiency in the production of electricity and provide high temperature heat for industrial processes. The efficient transfer of energy for industrial applications depends on the ability to incorporate effective heat exchangers between the nuclear heat transport system and the industrial process heat transport system. This study considers two different types of heat exchangers - helical coiled heat exchanger and printed circuit heat exchanger - as possible options for the AHTR secondary heat exchangers with distributed load analysis and comparison. Comparison is provided for all different cases along with challenges and recommendations. (authors)

Sabharwall, P. [Idaho National Laboratory, Idaho Falls, ID 83415-3860 (United States); Kim, E. S. [Seoul National Univ., P.O. Box 1625, Idaho Falls, ID 83415-3860 (United States); Siahpush, A.; McKellar, M.; Patterson, M. [Idaho National Laboratory, Idaho Falls, ID 83415-3860 (United States)

2012-07-01T23:59:59.000Z

331

Quality Assurance Exchange August 2009, Volume 5 Issue 2 | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Quality Assurance Exchange August 2009, Volume 5 Issue 2 Quality Assurance Exchange August 2009, Volume 5 Issue 2 Quality Assurance Exchange August 2009, Volume 5 Issue 2 Quality Assurance Exchange August 2009, Volume 5 Issue 2 U.S. Department of Energy Office of Quality Assurance Policy and Assistance I hope that you are finding the QA Exchange a welcome addition to your inbox. The Office of Quality Assurance Policy and Assistance (HS-23) is striving to make the content of this newsletter timely and full of useful information. Inside this issue of the QA Exchange we focus on the stimulus package and its effects on government work. Quality Assurance Exchange August 2009, Volume 5 Issue 2 More Documents & Publications Technical Standards Newsletter - December 1997 2010 U.S. Smart Grid Vendor Ecosystem Report on the companies and market

332

You can use a mobile device to access your Exchange account. On this page you will find the settings ActiveSync/Exchange to set up your Windows mobile devices.  

E-Print Network (OSTI)

Overview: You can use a mobile device to access your Exchange account. On this page you will find the settings ActiveSync/Exchange to set up your Windows mobile devices. If you set up an Exchange and task data! Use these settings to access your Exchange e-mail on a Windows mobile device: Username

Qiu, Weigang

333

You can use a mobile device to access your Exchange account. On this page you will find the settings ActiveSync/Exchange to set up your Blackberry mobile devices.  

E-Print Network (OSTI)

Overview: You can use a mobile device to access your Exchange account. On this page you will find the settings ActiveSync/Exchange to set up your Blackberry mobile devices. If you set up an Exchange and task data! Use these settings to access your Exchange e-mail on a Blackberry mobile device: Username

Qiu, Weigang

334

You can use a mobile device to access your Exchange account. On this page you will find the settings ActiveSync/Exchange to set up your Apple mobile devices.  

E-Print Network (OSTI)

Overview: You can use a mobile device to access your Exchange account. On this page you will find the settings ActiveSync/Exchange to set up your Apple mobile devices. If you set up an Exchange and task data! Use these settings to access your Exchange e-mail on an Apple mobile device: Username

Qiu, Weigang

335

Flexible, reusable fiberglass insulation tailored to fit valves, heat exchangers  

SciTech Connect

About 120,000 bbl/day of crude oil are refined into gasoline at the Marathon Petroleum refinery in Robinson, IL. Built in the early part of the century, the Robinson refinery has been continually updated and modernized in response to improving technology. To control heat loss on some of the unusually shaped and previously uninsulated process equipment, Marathon engineering personnel initiated a program to systematically evaluate and insulate these pieces of equipment. Primarily, over 500 valves and heat exchanger heads were losing heat which had been estimated to cost hundreds of thousands of dollars per year. The plant performed on-site evaluations of several types of removable insulation covers. The primary differences and deciding factors were in construction detail - particularly in the fasteners. Marathon chose lace-up fastening insulation covers because plant evaluation found them to be the best. Also the manufacturer agreed to provide tailor-made covers for all of the valves and heat exchanger heads. Service from the manufacturer through an insulation contractor located in Robinson was also a plus. The local contractor, working in conjunction with the manufacturer, conducted an in-plant survey that confirmed the already mentioned heat loss cost in the $100,000s range. It was also determined that an equipment temperature somewhere between 150 and 200/sup 0/F was the lowest temperature at which to economically install insulation. Marathon has been pleased with the performance of the insulation covers which reduce heat loss and, as an incidental benefit, provide personnel safety from hot surfaces. An important benefit has been the removability and reusability of the insulation, particularly advantageous on valves and heat exchangers the require frequent access.

Gockenbach, L.G.; Singleton, D.; Toy, D.A.

1986-06-01T23:59:59.000Z

336

Enabling Detailed Energy Analyses via the Technology Performance Exchange: Preprint  

SciTech Connect

One of the key tenets to increasing adoption of energy efficiency solutions in the built environment is improving confidence in energy performance. Current industry practices make extensive use of predictive modeling, often via the use of sophisticated hourly or sub-hourly energy simulation programs, to account for site-specific parameters (e.g., climate zone, hours of operation, and space type) and arrive at a performance estimate. While such methods are highly precise, they invariably provide less than ideal accuracy due to a lack of high-quality, foundational energy performance input data. The Technology Performance Exchange was constructed to allow the transparent sharing of foundational, product-specific energy performance data, and leverages significant, external engineering efforts and a modular architecture to efficiently identify and codify the minimum information necessary to accurately predict product energy performance. This strongly-typed database resource represents a novel solution to a difficult and established problem. One of the most exciting benefits is the way in which the Technology Performance Exchange's application programming interface has been leveraged to integrate contributed foundational data into the Building Component Library. Via a series of scripts, data is automatically translated and parsed into the Building Component Library in a format that is immediately usable to the energy modeling community. This paper (1) presents a high-level overview of the project drivers and the structure of the Technology Performance Exchange; (2) offers a detailed examination of how technologies are incorporated and translated into powerful energy modeling code snippets; and (3) examines several benefits of this robust workflow.

Studer, D.; Fleming, K.; Lee, E.; Livingood, W.

2014-08-01T23:59:59.000Z

337

Ion Exchange Testing with SRF Resin FY2012  

SciTech Connect

Ion exchange using spherical resorcinol-formaldehyde (SRF) resin has been selected by the U.S. Department of Energys Office of River Protection (DOE-ORP) for use in the Pretreatment Facility (PTF) of the Hanford Tank Waste Treatment and Immobilization Plant (WTP) and for potential application in at-tank deployment. Numerous studies have shown SRF resin to be effective for removing 137Cs from a wide variety of actual and simulated tank waste supernatants (Adamson et al. 2006; Blanchard et al. 2008; Burgeson et al. 2004; Duignan and Nash 2009; Fiskum et al. 2006a; Fiskum et al. 2006b; Fiskum et al. 2006c; Fiskum et al. 2007; Hassan and Adu-Wusu 2003; King et al. 2004; Nash et al. 2006). Prior work at the Pacific Northwest National Laboratory (PNNL) has focused primarily on the loading behavior for 4 to 6 M Na solutions at 25 to 45C. Recent proposed changes to the WTP ion exchange process baseline indicate that loading may include a broader range of sodium molarities (0.1 to 8 M) and higher temperatures (50C) to alleviate post-filtration precipitation issues. This report discusses ion exchange loading kinetics testing activities performed in accordance with Test Plan TP-WTPSP-002, Rev. 3.0 , which was prepared and approved in response to the Test Specification 24590 PTF-TSP-RT-09-002, Rev. 0 (Lehrman 2010) and Test Exception 24590 PTF TEF RT-11-00003, Rev. 0 (Meehan 2011). This testing focused on column tests evaluating the impact of elevated temperature on resin degradation over an extended period of time and batch contacts evaluating the impact on Cs loading over a broad range of sodium concentrations (0.1 to 5 M). These changes may be required to alleviate post-filtration precipitation issues and broaden the data range of SRF resin loading under the conditions expected with the new equipment and process changes.

Russell, Renee L.; Rinehart, Donald E.; Peterson, Reid A.

2013-06-11T23:59:59.000Z

338

Ion Exchange Testing with SRF Resin FY 2012  

SciTech Connect

Ion exchange using spherical resorcinol-formaldehyde (SRF) resin has been selected by the U.S. Department of Energys Office of River Protection (DOE-ORP) for use in the Pretreatment Facility (PTF) of the Hanford Tank Waste Treatment and Immobilization Plant (WTP) and for potential application in at-tank deployment. Numerous studies have shown SRF resin to be effective for removing 137Cs from a wide variety of actual and simulated tank waste supernatants (Adamson et al. 2006; Blanchard et al. 2008; Burgeson et al. 2004; Duignan and Nash 2009; Fiskum et al. 2006a; Fiskum et al. 2006b; Fiskum et al. 2006c; Fiskum et al. 2007; Hassan and Adu-Wusu 2003; King et al. 2004; Nash et al. 2006). Prior work at the Pacific Northwest National Laboratory (PNNL) has focused primarily on the loading behavior for 4 to 6 M Na solutions at 25 to 45C. Recent proposed changes to the WTP ion exchange process baseline indicate that loading may include a broader range of sodium molarities (0.1 to 8 M) and higher temperatures (50C) to alleviate post-filtration precipitation issues. This report discusses ion exchange loading kinetics testing activities performed in accordance with Test Plan TP-WTPSP-002, Rev. 3.01, which was prepared and approved in response to the Test Specification 24590-PTF-TSP-RT-09-002, Rev. 0 (Lehrman 2010) and Test Exception 24590-PTF-TEF-RT-11-00003, Rev. 0 (Meehan 2011). This testing focused on column tests evaluating the impact of elevated temperature on resin degradation over an extended period of time and batch contacts evaluating the impact on Cs loading over a broad range of sodium concentrations (0.1 to 5 M). These changes may be required to alleviate post-filtration precipitation issues and broaden the data range of SRF resin loading under the conditions expected with the new equipment and process changes.

Russell, Renee L.; Rinehart, Donald E.; Peterson, Reid A.

2014-07-02T23:59:59.000Z

339

Anion-exchange resin-based desulfurization process. Final report  

SciTech Connect

The following investigations were performed: (1) batch mode screening of eleven(11) commercially available resins and selection of three candidate resins for further evaluation in a fixed-bed setup. (2) Process variables study using three candidate resins in the fixed-bed setup and selection of the ``best`` resin for process economics development. (3) Exhaustion efficiency and solution concentration were found to be inversely related necessitating a trade-off between the resin cost versus the cost of evaporation/concentration of ensuing effluents. (4) Higher concentration of the HCO{sub 3}{sup {minus}} form of active sites over less active CO{sub 3}{sup 2{minus}} form of sites in the resin was believed to be the main reason for the observed increase in the equilibrium capacity of the resin at an elevated static CO{sub 2}-pressure. This Increase in capacity was found to level off around 80--120 psig range. The increase in CO{sub 2}-pressure, however, did not appear to affect the overall ion-exchange kinetics. (5) In the fixed-bed mode, the solution concentration was found to affect the equilibrium capacity of candidate resins. Their relationship was well satisfied by the Langmuir type non-linear equilibrium isotherm. Alternatively, the effect of solution concentration on overall ion-exchange kinetics varied from resin to resin. (6) Product inhibition effect on the resin was observed as an initial increase followed by a significant decrease in the resin`s equilibrium capacity for SO{sub 4}{sup 2{minus}} as the HCO{sub 3}{sup {minus}}/SO{sub 4}{sup 2{minus}} molar ratio in the solution was increased from 0 to 1.0. This ratio, however, did not affect the overall ion-exchange kinetics.

Sheth, A C; Dharmapurikar, R; Strevel, S D

1994-01-01T23:59:59.000Z

340

Sludge, fuel degradation and reducing fouling on heat exchangers  

SciTech Connect

Brookhaven National Laboratory, under contract to the US Department of Energy, operates an oil heat research primarily to lower energy consumption in the 12 million oil heated homes in the US. The program objectives include: Improve steady state efficiency of oil heating equipment, Improve seasonal efficiencies, Eliminate or minimize factors which tend to degrade system performance. This paper provides an overview of the status of three specific projects which fall under the above objectives. This includes our fuel quality project, oil appliance venting and a project addressing efficiency degradation due to soot fouling of heat exchangers.

Butcher, T.; Litzke, Wai Lin; Krajewski, R.; Celebi, Y.

1992-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Purification Or Organic Acids Using Anion Exchange Chromatography.  

DOE Patents (OSTI)

Disclosed is a cost-effective method for purifying and acidifying carboxylic acids, including organic acids and amino acids. The method involves removing impurities by allowing the anionic form of the carboxylic acid to bind to an anion exchange column and washing the column. The carboxylic anion is displaced as carboxylic acid by washing the resin with a strong inorganic anion. This method is effective in removing organic carboxylic acids and amino acids from a variety of industrial sources, including fermentation broths, hydrolysates, and waste streams.

Ponnampalam; Elankovan (Okemos, MI)

2001-09-04T23:59:59.000Z

342

Random?exchange Ising model with spatially correlated disorder  

Science Journals Connector (OSTI)

The pair correlation functiong(r r?) is derived in the mean?field approximation for a random?exchange Ising ferromagnet with long?range spatial correlations in the disorder. The static structure factor S(q) describing the intensity of scatteredelectromagnetic radiation or neutrons is then calculated. The inadequacy of a mean?field treatment is demonstrated and the physical aspects of renormalization are discussed. From a pedagogical perspective this problem offers a contemporary application of a number of techniques typically encountered in an advanced undergraduate or first?year graduate course in mathematical physics and can be used at that level to introduce the concept of renormalization

Erik K. Hobbie

1996-01-01T23:59:59.000Z

343

Cooking a Cuban Ajiaco: The Columbian Exchange in a Stewpot  

E-Print Network (OSTI)

. Cooking a Cuban Ajiaco: The Columbian Exchange in a Stewpot Gregory T. Cushman University of Kansas [Images added by WHB] Ajiaco is a multiethnic stew popular in many parts of Latin America and the Caribbean. The Cuban version of this highly-adaptable dish... suburbs of Nashville, Tennessee, where I grew up, I can now purchase all the ingredients for a Cuban ajiaco at a large, but otherwise unexception- al supermarket located just down the street from President Andrew Jacksons former plantation home. Cooking...

Cushman, Gregory T.

2006-01-01T23:59:59.000Z

344

Heat Pump Cycle with Solution Circuit and Internal Heat Exchange  

E-Print Network (OSTI)

-stage cycle, the heat transfer area required on the refrigerant side will increase by 10~ compared to the ammonia cycl e. CONCLUSIONS The hea t p1llllp cycl e employ ing one sol ut ion circuit and absorber/de sorber heat exchange has a more sophisticated... when a two-stage version fed into the same compressor. While ammonia of this cycl e is used. In this paper. another evaporate s out of an ammonia-water sol ution on C version of such cycles will be discussed which the composition. X. of this solution...

Radermacher, R.

345

A Plastic-Core Compact Heat Exchanger for Energy Conservation  

E-Print Network (OSTI)

is 10 er cost compared to one with a metallic core, but it as the potential of contamination from mOisfre contained in air. All of these heat exchangers su fer from fouling by dust and particulates wile condensation of moisture leads to corrosion... maximum temperature does not exceed 340 K (150?F) while polypropylene is recommended for use up to 370 K (200?F). Fouling of the transfer surfaces has the negative effect of increasing the resistance to heat flow that leads to deterioration...

Lazaridis, A.; Rafailidis, E.

346

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

347

Aging management guideline for commercial nuclear power plants - heat exchangers  

SciTech Connect

This Aging Management Guideline (AMG) describes recommended methods for effective detection and mitigation of age-related degradation mechanisms in commercial nuclear power plant heat exchangers important to license renewal. The intent of this AMG is to assist plant maintenance and operations personnel in maximizing the safe, useful life of these components. It also supports the documentation of effective aging management programs required under the License Renewal Rule 10 CFR 54. This AMG is presented in a manner that allows personnel responsible for performance analysis and maintenance to compare their plant-specific aging mechanisms (expected or already experienced) and aging management program activities to the more generic results and recommendations presented herein.

Booker, S.; Lehnert, D.; Daavettila, N.; Palop, E.

1994-06-01T23:59:59.000Z

348

MULTIPLE POLLUTANT REMOVAL USING THE CONDENSING HEAT EXCHANGER  

SciTech Connect

The Integrated Flue Gas Treatment (IFGT) system is a new concept whereby a Teflon covered condensing heat exchanger is adapted to remove certain flue gas constituents, both particulate and gaseous, while recovering low level heat. The pollutant removal performance and durability of this device is the subject of a USDOE sponsored program to develop this technology. The program was conducted under contract to the United States Department of Energy?s Fossil Energy Technology Center (DOE-FETC) and was supported by the Ohio Coal Development Office (OCDO) within the Ohio Department of Development, the Electric Power Research Institute?s Environmental Control Technology Center (EPRI-ECTC) and Babcock and Wilcox - a McDermott Company (B&W). This report covers the results of the first phase of this program. This Phase I project has been a two year effort. Phase I includes two experimental tasks. One task dealt principally with the pollutant removal capabilities of the IFGT at a scale of about 1.2MWt. The other task studied the durability of the Teflon covering to withstand the rigors of abrasive wear by fly ash emitted as a result of coal combustion. The pollutant removal characteristics of the IFGT system were measured over a wide range of operating conditions. The coals tested included high, medium and low-sulfur coals. The flue gas pollutants studied included ammonia, hydrogen chloride, hydrogen fluoride, particulate, sulfur dioxide, gas phase and particle phase mercury and gas phase and particle phase trace elements. The particulate removal efficiency and size distribution was investigated. These test results demonstrated that the IFGT system is an effective device for both acid gas absorption and fine particulate collection. Although soda ash was shown to be the most effective reagent for acid gas absorption, comparative cost analyses suggested that magnesium enhanced lime was the most promising avenue for future study. The durability of the Teflon covered heat exchanger tubes was studied on a pilot-scale single- stage condensing heat exchanger (CHX ). This device was operated under typical coal-fired flue gas conditions on a continuous basis for a period of approximately 10 months. Data from the test indicate that virtually no decrease in Teflon thickness was observed for the coating on the first two rows of heat exchanger tubes, even at high inlet particulate loadings. Evidence of wear was present only at the microscopic level, and even then was very minor in severity.

B.J. JANKURA; G.A. KUDLAC; R.T. BAILEY

1998-06-01T23:59:59.000Z

349

HYDROGEN ISOTOPE RECOVERY USING PROTON EXCHANGE MEMBRANE ELECTROLYSIS OF WATER  

SciTech Connect

A critical component of tritium glovebox operations is the recovery of high value tritium from the water vapor in the glove box atmosphere. One proposed method to improve existing tritium recovery systems is to replace the disposable hot magnesium beds used to separate the hydrogen and oxygen in water with continuous use Proton Exchange Membrane Electrolyzers (PEMEs). This study examines radiation exposure to the membrane of a PEME and examines the sizing difference that would be needed if the electrolyzer were operated with a cathode water vapor feed instead of an anode liquid water feed.

Fox, E; Scott Greenway, S; Amy Ekechukwu, A

2007-08-27T23:59:59.000Z

350

Thermal self-oscillations in radiative heat exchange  

E-Print Network (OSTI)

We report the effect of relaxation-type self-induced temperature oscillations in the system of two parallel plates of SiO$_2$ and VO$_2$ which exchange heat by thermal radiation in vacuum. The nonlinear feedback in the self-oscillating system is provided by metal-insulator transition in VO$_2$. Using the method of fluctuational electrodynamics we show that under the action of external laser of a constant power, the temperature of VO$_2$ plate oscillates around its phase transition value.

Dyakov, Sergey; Yan, Min; Qiu, Min

2014-01-01T23:59:59.000Z

351

Secondary Heat Exchanger Design and Comparison for Advanced High Temperature Reactor  

SciTech Connect

The goals of next generation nuclear reactors, such as the high temperature gas-cooled reactor and advance high temperature reactor (AHTR), are to increase energy efficiency in the production of electricity and provide high temperature heat for industrial processes. The efficient transfer of energy for industrial applications depends on the ability to incorporate effective heat exchangers between the nuclear heat transport system and the industrial process heat transport system. The need for efficiency, compactness, and safety challenge the boundaries of existing heat exchanger technology, giving rise to the following study. Various studies have been performed in attempts to update the secondary heat exchanger that is downstream of the primary heat exchanger, mostly because its performance is strongly tied to the ability to employ more efficient conversion cycles, such as the Rankine super critical and subcritical cycles. This study considers two different types of heat exchangershelical coiled heat exchanger and printed circuit heat exchangeras possible options for the AHTR secondary heat exchangers with the following three different options: (1) A single heat exchanger transfers all the heat (3,400 MW(t)) from the intermediate heat transfer loop to the power conversion system or process plants; (2) Two heat exchangers share heat to transfer total heat of 3,400 MW(t) from the intermediate heat transfer loop to the power conversion system or process plants, each exchanger transfers 1,700 MW(t) with a parallel configuration; and (3) Three heat exchangers share heat to transfer total heat of 3,400 MW(t) from the intermediate heat transfer loop to the power conversion system or process plants. Each heat exchanger transfers 1,130 MW(t) with a parallel configuration. A preliminary cost comparison will be provided for all different cases along with challenges and recommendations.

Piyush Sabharwall; Ali Siahpush; Michael McKellar; Michael Patterson; Eung Soo Kim

2012-06-01T23:59:59.000Z

352

Application Protocol, Initial Graphics Exchange Specification (IGES), Layered Electrical Product  

SciTech Connect

An application protocol is an information systems engineering view of a specific product The view represents an agreement on the generic activities needed to design and fabricate the product the agreement on the information needed to support those activities, and the specific constructs of a product data standard for use in transferring some or all of the information required. This application protocol describes the data for electrical and electronic products in terms of a product description standard called the Initial Graphics Exchange Specification (IGES). More specifically, the Layered Electrical Product IGES Application Protocol (AP) specifies the mechanisms for defining and exchanging computer-models and their associated data for those products which have been designed in two dimensional geometry so as to be produced as a series of layers in IGES format The AP defines the appropriateness of the data items for describing the geometry of the various parts of a product (shape and location), the connectivity, and the processing and material characteristics. Excluded is the behavioral requirements which the product was intended to satisfy, except as those requirements have been recorded as design rules or product testing requirements.

O`Connell, L.J. [ed.

1994-12-01T23:59:59.000Z

353

Integrated heat exchanger design for a cryogenic storage tank  

SciTech Connect

Field demonstrations of liquid hydrogen technology will be undertaken for the proliferation of advanced methods and applications in the use of cryofuels. Advancements in the use of cryofuels for transportation on Earth, from Earth, or in space are envisioned for automobiles, aircraft, rockets, and spacecraft. These advancements rely on practical ways of storage, transfer, and handling of liquid hydrogen. Focusing on storage, an integrated heat exchanger system has been designed for incorporation with an existing storage tank and a reverse Brayton cycle helium refrigerator of capacity 850 watts at 20 K. The storage tank is a 125,000-liter capacity horizontal cylindrical tank, with vacuum jacket and multilayer insulation, and a small 0.6-meter diameter manway opening. Addressed are the specific design challenges associated with the small opening, complete modularity, pressure systems re-certification for lower temperature and pressure service associated with hydrogen densification, and a large 8:1 length-to-diameter ratio for distribution of the cryogenic refrigeration. The approach, problem solving, and system design and analysis for integrated heat exchanger are detailed and discussed. Implications for future space launch facilities are also identified. The objective of the field demonstration will be to test various zero-loss and densified cryofuel handling concepts for future transportation applications.

Fesmire, J. E.; Bonner, T.; Oliveira, J. M.; Johnson, W. L.; Notardonato, W. U. [NASA Kennedy Space Center, Cryogenics Test Laboratory, NE-F6, KSC, FL 32899 (United States); Tomsik, T. M. [NASA Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135 (United States); Conyers, H. J. [NASA Stennis Space Center, Building 3225, SSC, MS 39529 (United States)

2014-01-29T23:59:59.000Z

354

Integrated heat exchanger design for a cryogenic storage tank  

Science Journals Connector (OSTI)

Field demonstrations of liquid hydrogen technology will be undertaken for the proliferation of advanced methods and applications in the use of cryofuels. Advancements in the use of cryofuels for transportation on Earth from Earth or in space are envisioned for automobiles aircraft rockets and spacecraft. These advancements rely on practical ways of storage transfer and handling of liquid hydrogen. Focusing on storage an integrated heat exchanger system has been designed for incorporation with an existing storage tank and a reverse Brayton cycle helium refrigerator of capacity 850 watts at 20 K. The storage tank is a 125 000-liter capacity horizontal cylindrical tank with vacuum jacket and multilayer insulation and a small 0.6-meter diameter manway opening. Addressed are the specific design challenges associated with the small opening complete modularity pressure systems re-certification for lower temperature and pressure service associated with hydrogen densification and a large 8:1 length-to-diameter ratio for distribution of the cryogenic refrigeration. The approach problem solving and system design and analysis for integrated heat exchanger are detailed and discussed. Implications for future space launch facilities are also identified. The objective of the field demonstration will be to test various zero-loss and densified cryofuel handling concepts for future transportation applications.

2014-01-01T23:59:59.000Z

355

Novel Power Electronics Three-Dimensional Heat Exchanger: Preprint  

SciTech Connect

Electric drive systems for vehicle propulsion enable technologies critical to meeting challenges for energy, environmental, and economic security. Enabling cost-effective electric drive systems requires reductions in inverter power semiconductor area. As critical components of the electric drive system are made smaller, heat removal becomes an increasing challenge. In this paper, we demonstrate an integrated approach to the design of thermal management systems for power semiconductors that matches the passive thermal resistance of the packaging with the active convective cooling performance of the heat exchanger. The heat exchanger concept builds on existing semiconductor thermal management improvements described in literature and patents, which include improved bonded interface materials, direct cooling of the semiconductor packages, and double-sided cooling. The key difference in the described concept is the achievement of high heat transfer performance with less aggressive cooling techniques by optimizing the passive and active heat transfer paths. An extruded aluminum design was selected because of its lower tooling cost, higher performance, and scalability in comparison to cast aluminum. Results demonstrated a heat flux improvement of a factor of two, and a package heat density improvement over 30%, which achieved the thermal performance targets.

Bennion, K.; Cousineau, J.; Lustbader, J.; Narumanchi, S.

2014-08-01T23:59:59.000Z

356

Quality Assurance Exchange March 2011, Volume 7 Issue 1 | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Quality Assurance Exchange March 2011, Volume 7 Issue 1 Quality Assurance Exchange March 2011, Volume 7 Issue 1 Quality Assurance Exchange March 2011, Volume 7 Issue 1 Quality Software Development and Success Through Project Management and Six Sigma Background The following article discusses the Idaho National Laboratory's Advanced Mixed Waste Treatment Project (AMWTP) process improvements in facility availability and cost avoidance through an improved software management process. This information is very positive and highlights a Department of Energy (DOE) project that simultaneously improved quality, reduced project costs, and regained schedule. Quality Assurance Exchange March 2011 More Documents & Publications Quality Assurance Exchange August 2011, Volume 7 Issue 2 QUALITY ASSURANCE EXCHANGE December 2005 Volume 1 Issue 3

357

Heat exchanger optimization for geothermal district heating systems: A fuel saving approach  

Science Journals Connector (OSTI)

One of the most commonly used heating devices in geothermal systems is the heat exchanger. The output conditions of heat exchangers are based on several parameters. The heat transfer area is one of the most important parameters for heat exchangers in terms of economics. Although there are a lot of methods to optimize heat exchangers, the method described here is a fairly easy approach. In this paper, a counter flow heat exchanger of geothermal district heating system is considered and optimum design values, which provide maximum annual net profit, for the considered heating system are found according to fuel savings. Performance of the heat exchanger is also calculated. In the analysis, since some values are affected by local conditions, Turkey's conditions are considered.

Ahmet Dagdas

2007-01-01T23:59:59.000Z

358

1 Beware the Middleman: Empirical Analysis of Bitcoin-Exchange Risk  

E-Print Network (OSTI)

Abstract. Bitcoin has enjoyed wider adoption than any previous crypto-currency; yet its success has also attracted the attention of fraudsters who have taken advantage of operational insecurity and transaction irreversibility. We study the risk investors face from Bitcoin exchanges, which convert between Bitcoins and hard currency. We examine the track record of 40 Bitcoin exchanges established over the past three years, and find that 18 have since closed, with customer account balances often wiped out. Fraudsters are sometimes to blame, but not always. Using a proportional hazards model, we find that an exchanges transaction volume indicates whether or not it is likely to close. Less popular exchanges are more likely to be shut than popular ones. We also present a logistic regression showing that popular exchanges are more likely to suffer a security breach.

Tyler Moore; Nicolas Christin

359

Estimation of Volatility The values of the parameters r, t, St, T, and K used to price a call op-  

E-Print Network (OSTI)

is the price of light sweet crude oil futures traded on the New York Mercantile Exchange (NYMEX), basedChapter 7 Estimation of Volatility The values of the parameters r, t, St, T, and K used to price in the stock price model dSt St = µdt + dBt. A natural estimator for the trend parameter µ can be written as ^µ

Privault, Nicolas

360

High Performance Catalytic Heat Exchanger for SOFC Systems - FuelCell Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Catalytic Heat Catalytic Heat Exchanger for SOFC Systems-FuelCell Energy Background In a typical solid oxide fuel cell (SOFC) power generation system, hot (~900 °C) effluent gas from a catalytic combustor serves as the heat source within a high-temperature heat exchanger, preheating incoming fresh air for the SOFC's cathode. The catalytic combustor and the cathode air heat exchanger together represent the largest opportunity for cost

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Applications of the Strong Heat Transformation by Pulse Flow in the Shell and Tube Heat Exchanger  

E-Print Network (OSTI)

when it was located in the downstream, which also weakened heat exchange[5-8], (4)pulse flow might enhance or weaken heat exchange that lied on flow parameter[9-11]. This article made use of FLUENT software to numerical Simulate round... exchange[12]. When adapted FLUENT software, we considered the model was slender tube which had a large gap between length and scale, so we could use double precision solver; In the numerical simulation, the pressure interpolation selected standard...

Chen, Y.; Zhao, J.

2006-01-01T23:59:59.000Z

362

Analysis of a high-temperature heat exchanger for an externally-fired micro gas turbine  

Science Journals Connector (OSTI)

Abstract The externally-fired gas turbine (EFGT) can convert fuels such as coal, biomass, biomass gasification gas and solar energy into electricity and heat. The combination of this technology with biomass gasification gas represents an interesting option for gasification, for which it has been difficult to find a conversion technology. In this system, the heat exchanger deals with the contaminants of biomass derived gas instead of the turbine itself. However, these contaminants can build a deposit layer in the heat exchanger that can affect its performance. The heat exchanger is important in externally fired gas turbines since the turbine inlet temperature is directly dependent on its performance. Several studies on heat exchangers for externally fired gas turbines have been carried out. However, very few detailed studies were found comparing the performance of heat exchangers for externally fired gas turbines considering the effect of deposit materials on the surfaces. In this regard, this work compares the performance of a corrugated plate heat exchanger and a two-tube-passes shell and tube heat exchanger considering the effect of thickness of deposit material with different thermal conductivities on pressure drop and effectiveness. The results show that the effectiveness of the corrugated plate heat exchanger is more influenced at larger thicknesses of deposit materials than the two-tube-passes shell and tube heat exchanger. There is an exponential increase in the pressure drop of the plate heat exchanger while a monotonic increase of pressure drop is seen for the shell and tube heat exchanger. The increase in the thickness of the deposit material has two effects. On one hand, it increases the resistance to heat transfer and on the other hand, it reduces the through flow area increasing the velocity and hence the heat transfer coefficient. Additionally, the effectiveness of the heat exchangers had a stronger influence on the power output than the pressure drop.

Fabiola Baina; Anders Malmquist; Lucio Alejo; Bjrn Palm; Torsten H. Fransson

2015-01-01T23:59:59.000Z

363

Exchange-induced splitting of exciton energy levels in quantum wires  

Science Journals Connector (OSTI)

Effects of the electron-hole exchange interaction on excitons in one-dimensional quantum wires are studied theoretically by performing a simplified calculation with a scaling argument. It is shown that the exchange parameters are drastically enhanced in narrow quantum wires compared to the bulk values. As expected, the variation of the exchange-induced splitting as a function of the wire size has the same qualitative behavior as those in comparable two-dimensional quantum wells but with much higher magnitudes.

Y. Chen

1990-05-15T23:59:59.000Z

364

Ion exchange resins. (Latest citations from the US Patent bibliographic file with exemplary claims). Published Search  

SciTech Connect

The bibliography contains citations concerning preparation, regeneration, and applications of ion exchange resins. Applications include water and waste treatment; food processing; chemical recovery, separation, purification, and catalysis; desalination; and ore treatment and recovery. Methods are included for the processing of spent ion exchange resins and for protecting ion exchange resins from oxidation and chemical degradation. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1994-04-01T23:59:59.000Z

365

Test of (?, A2) Exchange Degeneracy, Duality, and Evidence for Secondary Trajectories Obtained From (KN,KN) Charge-Exchange Reactions  

Science Journals Connector (OSTI)

An analysis of the difference between the charge-exchange reactions K+n?K0p and K-p?K0n over the momentum range 1-5.5 GeV/c provides strong evidence for exchange degeneracy of the (?, A2) trajectories and shows the importance of the exchange of secondary trajectories. The energy dependence of this difference is shown to be inconsistent with simple cut models. A new test of the duality principle is proposed and appears to be in good agreement with the present data.

D. Cline, J. Matos, and D. D. Reeder

1969-12-01T23:59:59.000Z

366

Small Column Ion Exchange at Savannah River Site Technology Readiness Assessment Report  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Small Column Ion Exchange Technology at Small Column Ion Exchange Technology at Savannah River Site U.S. Department of Energy Office of Environmental Management Office of Technology Innovation and Development Technology Readiness Assessment Report November 2011 U.S. DOE-EM Office of Technology Innovation and Development November 11, 2011 Small Column Ion Exchange Program Technology Readiness Assessment Page 2 of 112 This page intentionally left blank November 11, 2011 U.S. DOE-EM Office of Technology Innovation and Development Small Column Ion Exchange Program Technology Readiness Assessment Page 3 of 112 APPROVALS ________________________ _ Harry D. Harmon Date

367

Experimental Studies on Coherent Synchrotron Radiation at an Emittance Exchange Beamline  

SciTech Connect

One of the goals of the Fermilab A0 photoinjector is to experimentally investigate the transverse to longitudinal emittance exchange (EEX) principle. Coherent synchrotron radiation in the emittance exchange line could limit the performance of the emittance exchanger at short bunch lengths. In this paper, we present experimental and simulation studies of the coherent synchrotron radiation (CSR) in the emittance exchange line at the A0 photoinjector. We report on time-resolved CSR studies using a skew-quadrupole technique. We also demonstrate the advantages of running the EEX with an energy chirped beam.

Thangaraj, J.C.T.; Thurman-Keup, R.; Ruan, J.; Johnson, A.S.; Lumpkin, A.H.; Santucci, J.; /Fermilab

2012-04-01T23:59:59.000Z

368

Experimental Study of Coherent Synchrotron Radiation in the Emittance Exchange Line at the A0-Photoinjector  

SciTech Connect

Next generation accelerators will require a high current, low emittance beam with a low energy spread. Such accelerators will employ advanced beam conditioning systems such as emittance exchangers to manipulate high brightness beams. One of the goals of the Fermilab A0 photoinjector is to investigate the transverse to longitudinal emittance exchange principle. Coherent synchrotron radiation could limit high current operation of the emittance exchanger. In this paper, we report on the preliminary experimental and simulation study of the coherent synchroton radiation (CSR) in the emittance exchange line at the A0 photoinjector.

Thangaraj, Jayakar C. T.; Thurman-Keup, R.; Johnson, A.; Lumpkin, A. H.; Edwards, H.; Ruan, J.; Santucci, J.; Sun, Y. E.; Church, M. [Fermi National Accelerator Labaratory, Batavia, IL, 60510 (United States); Piot, P. [Fermi National Accelerator Labaratory, Batavia, IL, 60510 (United States); Department of Physics, DeKalb, IL, 60115 (United States)

2010-11-04T23:59:59.000Z

369

Building America Technology Solutions for New and Existing Homes: Foundation Heat Exchanger, Oak Ridge, Tennessee  

Energy.gov (U.S. Department of Energy (DOE))

This case study introduces the foundation heat exchanger that can significantly reduce the cost of the ground source heat pump (GHSP).

370

Facilitation of protein 3-D structure determination using enhanced peptide amide deuterium exchange mass spectrometry (DXMS)  

E-Print Network (OSTI)

hydrophobic interaction in protein folding. Proc Natl Acad1999;28:1-27. 15. Protein Folding, Dynamics, and StructuralHydrogen exchange and protein folding. Curr. Opin. Struct.

Pantazatos, Dennis Peter

2006-01-01T23:59:59.000Z

371

E-Print Network 3.0 - anion-exchange chromatography prior Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

temperature. 2 12;Table 2. Buffers for Anion-Exchange... and biochemistry and their removal from biological samples. Chromatography Pre-Runs Prior to loading the sample......

372

Technical Information Exchange on Pyrolysis Oil: Potential for a renewable heating oil substitution  

Energy.gov (U.S. Department of Energy (DOE))

Two-day agenda from the workshop: Technical Information Exchange on Pyrolysis Oil: Potential for a renewable heating oil substitution fuel in New England.

373

Methods of analysis modified size exchange chromatography method for analysis of heavy oil residues  

Science Journals Connector (OSTI)

A modified size exchange chromatography method is used to obtain molecular weight distributions, average molecular weight, and other characteristics of heavy oil residues: coal asphalt, petroleum asphalt, vacu...

Changming Zhang; Adnan Alhajji

2012-09-01T23:59:59.000Z

374

Oxygen-Isotope Exchange between CO2 and Solid Ti18O2  

Science Journals Connector (OSTI)

Oxygen-Isotope Exchange between CO2 and Solid Ti18O2 ... Analysis of the isotopic composition of the gases produced has revealed ... ...

Svatopluk Civis?; Martin Ferus; Pavel Kuba?t; Marke?ta Zukalova?; Ladislav Kavan

2011-05-17T23:59:59.000Z

375

E-Print Network 3.0 - ab initio exchange Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

for: ab initio exchange Page: << < 1 2 3 4 5 > >> 1 imageslogoetsf Introduction Electron Energy Loss Spectroscopy Applications: Nanotubes and Graphene Perspectives Summary: n Vext...

376

Optimal Participation of DR Aggregators in Day-Ahead Energy and Demand Response Exchange Markets  

Science Journals Connector (OSTI)

Aggregating the Demand Response (DR) is approved as an effective ... transmission system operator, distributors, and retailers in Demand Response eXchange (DRX) market, in addition to...

Ehsan Heydarian-Forushani

2014-01-01T23:59:59.000Z

377

Proton Exchange Membrane Fuel Cells for Electrical Power Generation On-Board Commercial Airplanes  

Energy.gov (U.S. Department of Energy (DOE))

This report is an initial investigation of the use of proton exchange membrane (PEM) fuel cells on-board commercial aircraft.

378

Identification and Characterization of Near-Term Direct Hydrogen Proton Exchange Membrane Fuel Cell Markets  

Energy.gov (U.S. Department of Energy (DOE))

This document provides information about near-term markets (such as for forklifts and telecommunications) for proton exchange membrane fuel cells.

379

A model for improvement of water heating heat exchanger designs for residential heat pump water heaters.  

E-Print Network (OSTI)

??Heat pump water heaters are a promising technology to reduce energy use and greenhouse gas emissions. A key component is the water heating heat exchanger. (more)

Weerawoot, Arunwattana

2010-01-01T23:59:59.000Z

380

December 11-12, 2014- Technical Exchange Meeting- Las Vegas, Nevada  

Energy.gov (U.S. Department of Energy (DOE))

Technical Exchange Meeting, December 11-12, 2014 with optional tour of the Nevada National Security Site on December 10, 2014, Las Vegas

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Optimal Capacity Investment, and Pricing Across International Markets Under Exchange Rate Uncertainty and Duopoly Competition.  

E-Print Network (OSTI)

??In this dissertation we investigate joint optimal capacity investment, pricing and production decisions for a multinational manufacturer who faces exchange rate uncertainties. We consider a (more)

Ahmed, Anas A.

2010-01-01T23:59:59.000Z

382

Experimental investigation of plastic finned-tube heat exchangers, with emphasis on material thermal conductivity  

SciTech Connect

In this paper, two modified types of polypropylene (PP) with high thermal conductivity up to 2.3 W/m K and 16.5 W/m K are used to manufacture the finned-tube heat exchangers, which are prospected to be used in liquid desiccant air conditioning, heat recovery, water source heat pump, sea water desalination, etc. A third plastic heat exchanger is also manufactured with ordinary PP for validation and comparison. Experiments are carried out to determine the thermal performance of the plastic heat exchangers. It is found that the plastic finned-tube heat exchanger with thermal conductivity of 16.5 W/m K can achieve overall heat transfer coefficient of 34 W/m{sup 2} K. The experimental results are compared with calculation and they agree well with each other. Finally, the effect of material thermal conductivity on heat exchanger thermal performance is studied in detail. The results show that there is a threshold value of material thermal conductivity. Below this value improving thermal conductivity can considerably improve the heat exchanger performance while over this value improving thermal conductivity contributes very little to performance enhancement. For the finned-tube heat exchanger designed in this paper, when the plastic thermal conductivity can reach over 15 W/m K, it can achieve more than 95% of the titanium heat exchanger performance and 84% of the aluminum or copper heat exchanger performance with the same dimension. (author)

Chen, Lin; Li, Zhen; Guo, Zeng-Yuan [Department of Engineering Mechanics, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084 (China)

2009-07-15T23:59:59.000Z

383

Financial liberalisation and the capital structure of firms listed on the Johannesburg stock exchange.  

E-Print Network (OSTI)

??This thesis examines the impact of financial liberalisation on the capital structure of non-financial firms listed on the Johannesburg Stock Exchange (JSE). The research hypotheses (more)

Chipeta, Chimwemwe

2012-01-01T23:59:59.000Z

384

E-Print Network 3.0 - active heat exchange Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

typical of those sold before 1978, at 8C outdoor air temperature... .2, an additional 43% loss. Heat losses observed at the compressorheat exchangers, a necessary condition... COP...

385

Dynamic characteristics of a commercial Proton Exchange Membrane (PEM) fuel cell.  

E-Print Network (OSTI)

??Fast growing application of Proton Exchange Membrane (PEM) Fuel Cell in automotive industries, has brought the necessity of conducting research on automotive aspects of the (more)

Toutounchian, Hamid

2008-01-01T23:59:59.000Z

386

An Investigation and Characterization of Metal Foam Filled Double-Pipe Heat Exchangers.  

E-Print Network (OSTI)

??The effect of using metal foams in double-pipe heat exchangers is investigated in this work. The advantages and drawbacks of using metal foams in these (more)

Chen, Xi

2014-01-01T23:59:59.000Z

387

Bio-engineered gas diffusion electrodes (GDEs) for proton exchange membrane fuel cells (PEMFCs).  

E-Print Network (OSTI)

??The current cost and finite nature of Platinum Group Metals (PGM) is a barrier to the successful commercialisation of Proton Exchange Membrane Fuel Cells (PEMFCs). (more)

Courtney, James Matthew

2011-01-01T23:59:59.000Z

388

Resolving Conformational and Rotameric Exchange in Spin-Labeled Proteins Using Saturation Recovery EPR  

E-Print Network (OSTI)

Using Saturation Recovery EPR Michael D. Bridges Ka lma nparamagnetic resonance (EPR) spectra can arise either fromgive rise to multicomponent EPR spectra; rota- mer exchange

Bridges, Michael D.; Hideg, Klmn; Hubbell, Wayne L.

2010-01-01T23:59:59.000Z

389

E-Print Network 3.0 - anion exchange sorption Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

sorption Search Powered by Explorit Topic List Advanced Search Sample search results for: anion exchange sorption Page: << < 1 2 3 4 5 > >> 1 Sorption of arsenic by...

390

Exploration Best Practices and the OpenEI Knowledge Exchange Webinar  

Energy.gov (U.S. Department of Energy (DOE))

Exploration Best Practices and the OpenEI Knowledge Exchange Webinar slide presentation by Katherine Young, Timothy Reber and Kermit Witherbee on April 11, 2012.

391

Plutonium metal standards exchange program for actinide measurement quality assurance (20012007)  

Science Journals Connector (OSTI)

Plutonium metal exchange programs operated by the Rocky Flats Plant were conducted from 19561989 to ... of methods and results for plutonium, uranium, neptunium, and americium, measurements.

Lav Tandon; Kevin Kuhn; Diana Decker

2009-11-01T23:59:59.000Z

392

E-Print Network 3.0 - anion exchange separation Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

its cation. Thus far... exchange, but SO4 22 is not affected. As selective ... Source: Smith, Bradley D. - Department of Chemistry and Biochemistry, University of Notre Dame...

393

Advanced Heat/Mass Exchanger Technology for Geothermal and solar Renewable Energy Systems  

Energy.gov (U.S. Department of Energy (DOE))

Advanced Heat/Mass Exchanger Technology for Geothermal and solar Renewable Energy Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

394

Development of Design Criteria for Fluid Induced Structural Vibrations in Steam Generators and Heat Exchangers  

SciTech Connect

Flow-induced vibration in heat exchangers has been a major cause of concern in the nuclear industry for several decades. Many incidents of failure of heat exchangers due to apparent flow-induced vibration have been reported through the USNRC incident reporting system. Almost all heat exchangers have to deal with this problem during their operation. The phenomenon has been studied since the 1970s and the database of experimental studies on flow-induced vibration is constantly updated with new findings and improved design criteria for heat exchangers.

Uvan Catton; Vijay K. Dhir; Deepanjan Mitra; Omar Alquaddoomi; Pierangelo Adinolfi

2004-04-06T23:59:59.000Z

395

Continuation of Studies on Development of ODS Heat Exchanger Tubing  

SciTech Connect

The Department of Energy (DOE), National Energy Technology Center (NETL), has initiated a strategic plan for the development of advanced technologies needed to design and build fossil fuel plants with very high efficiency and environmental performance. These plants, referred to as 'Vision 21' and FutureGen programs by DOE, will produce electricity, chemicals, fuels, or a combination of these products, and possibly secondary products such as steam/heat for industrial use. MA956 is a prime candidate material being considered for a high temperature heat exchanger in the 'Vision 21' and FutureGen programs. This material is an oxide dispersion strengthened (ODS) alloy; however, there are some gaps in the data required to commit to the use of these alloys in a full-size plant. To fill the technology gaps for commercial production and use of the material for 'Advanced Power Generation Systems' this project has performed development activity to significant increase in circumferential strength of MA956 as compared to currently available material, investigated bonding technologies for bonding tube-to-tube joints through joining development, and performed tensile, creep and fire-side corrosion tests to validate the use and fabrication processes of MA956 to heat exchanger tubing applications. Development activities within this projected has demonstrated increased circumferential strength of MA956 tubes through flow form processing. Of the six fabrication technologies for bonding tube-to-tube joints, inertia friction welding (IFW) and flash butt welding (FBW) were identified as processes for joining MA956 tubes. Tensile, creep, and fire-side corrosion test data were generated for both base metal and weld joints. The data can be used for design of future systems employing MA956. Based upon the positive development activities, two test probes were designed and fabricated for field exposure testing at 1204 C ({approx}2200 F) flue gas. The probes contained tube portions with FBW and IFW welded MA956. Field testing of the probes and remaining heat exchanger design activity will be performed by Oak Ridge National Laboratory under DOE Contract DE-AC05-00OR22725.

Lawrence Brown; David Workman; Bimal Kad; Gaylord Smith; Archie Robertson; Ian Wright

2008-04-15T23:59:59.000Z

396

SWPF/SDIP Presentation for EM-21 Technical Exchange  

NLE Websites -- All DOE Office Websites (Extended Search)

Salt Waste Processing at SRS Salt Waste Processing at SRS May 20, 2009 Bill Van Pelt Liquid Waste Project Engineering Washington Savannah River Company Presentation for the 2009 EM-21 Technology Exchange Denver, CO * Describe SRS preparations for Salt Waste Processing - Salt Waste Processing Facility (SWPF) * Parsons Infrastructure and Technology - Salt Disposition Integration (SDI) * Washington Savannah River Company (WSRC) * Dispositioning radioactive salt and supernate into final waste forms significantly reduces risk at SRS * SWPF and SDI position SRS Liquid Waste to support EM goals of closing both non-compliant and compliant waste tanks 2 Purpose 3 SRS Tank Farm Operations Evaporator Feed Tank Concentrate Receipt Tank Overheads (to Effluent Treatment Facility) Saltcake Evaporator System

397

DOE Office of Waste Processing Technical Exchange - Agenda  

NLE Websites -- All DOE Office Websites (Extended Search)

June 1, 2009 June 1, 2009 Agenda Hotel Information Registration Presentation Guidelines Poster Guidelines Webcast Waiver Contacts Home Waste Processing Technical Exchange Agenda (Version 1.1) Pre-Registration: Monday, May 18, 5:00p - 7:00p Organizer/Session Chair: Blocker (early registration & speaker check-in) Day 1: Tuesday, May 19 Registration - 7:00a - 8:00a Session One - Opening Session Two - Waste Retrieval and Closure 1 Session Three - Waste Form Development Day 2: Wednesday, May 20 Session Four - Pretreatment 1 Session Five - Facility Readiness and Start-up Session Six - Pretreatment 2 Session Seven - Waste Retrieval and Closure 2 Session Eight - Poster Presentations Day 3: Thursday, May 21 Session Nine - Regulatory Activity and Performance Assessment Session Ten - Waste Storage and Tank Farm Operational Improvements

398

Scalable replica-exchange framework for Wang Landau sampling  

SciTech Connect

We investigate a generic, parallel replica-exchange framework for Monte Carlo simulations based on the Wang Landau method. To demonstrate its advantages and general applicability for massively parallel simulations of complex systems, we apply it to lattice spin models, the self-assembly process in amphiphilic solutions, and the adsorption of molecules on surfaces. While of general, current interest, the latter phenomena are challenging to study computationally because of multiple structural transitions occurring over a broad temperature range. We show how the parallel framework facilitates simulations of such processes and, without any loss of accuracy or precision, gives a significant speedup and allows for the study of much larger systems and much wider temperature ranges than possible with single-walker methods.

Vogel, Thomas [University of Georgia, Athens, GA; Li, Ying Wai [ORNL; Wuest, Thomas [Swiss Federal Research Institute, Switzerland; Landau, David P [University of Georgia, Athens, GA

2014-01-01T23:59:59.000Z

399

Electrodialysis-ion exchange for the separation of dissolved salts  

SciTech Connect

The Department of Energy generates and stores a significant quantity of low level, high level, and mixed wastes. As some of the DOE facilities are decontaminated and decommissioned, additional and possibly different forms of wastes will be generated. A significant portion of these wastes are aqueous streams containing acids, bases, and salts, or are wet solids containing inorganic salts. Some of these wastes are quite dilute solutions, whereas others contain large quantities of nitrates either in the form of dissolved salts or acids. Many of the wastes are also contaminated with heavy metals, radioactive products, or organics. Some of these wastes are in storage because a satisfactory treatment and disposal processes have not been developed. This report describes the process of electrodialysis-ion exchange (EDIX) for treating aqueous wastes streams consisting of nitrates, sodium, organics, heavy metals, and radioactive species.

Baroch, C.J.; Grant, P.J.

1995-12-31T23:59:59.000Z

400

Locating PHEV Exchange Stations in V2G  

E-Print Network (OSTI)

Plug-in hybrid electric vehicles (PHEVs) are an environmentally friendly technology that is expected to rapidly penetrate the transportation system. Renewable energy sources such as wind and solar have received considerable attention as clean power options for future generation expansion. However, these sources are intermittent and increase the uncertainty in the ability to generate power. The deployment of PHEVs in a vehicle-to-grid (V2G) system provide a potential mechanism for reducing the variability of renewable energy sources. For example, PHEV supporting infrastructures like battery exchange stations that provide battery service to PHEV customers could be used as storage devices to stabilize the grid when renewable energy production is fluctuating. In this paper, we study how to best site these stations in terms of how they can support both the transportation system and the power grid. To model this problem we develop a two-stage stochastic program to optimally locate the stations prior to the realizat...

Pan, Feng; Berscheid, Alan; Izraelevitz, David

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Electrically switched cesium ion exchange. FY 1996 annual report  

SciTech Connect

An electrochemical method for metal ion separations, called Electrically Switched Ion Exchange, is described. Direct oxidation and reduction of an electroactive film attached to an electrode surface is used to load and unload the film with alkali metal cations. The electroactive films under investigation are Ni hexacyanoferrates, which are deposited on the surface by applying an anodic potential to a Ni electrode in a solution containing the ferricyanide anion. Reported film preparation procedures were modified to produce films with improved capacity and stability. Electrochemical behavior of the derivatized electrodes were investigated using cyclic voltammetry and chronocoulometry. The films show selectivity for Cs in concentrated sodium solutions. Raman spectroscopy was used to monitor changes in oxidation state of the film and imaging experiments have demonstrated that the redox reactions are spatially homogenous across the film. Requirements for a bench scale unit were identified.

Lilga, M.A.; Orth, R.J.; Sukamto, J.P.H. [Pacific Northwest National Lab., Richland, WA (United States); Schwartz, D.T.; Haight, S.M. [Washington Univ., Seattle, WA (United States); Genders, D. [Electrosynthesis Co., Inc., Cheektowaga, NY (United States)

1996-12-01T23:59:59.000Z

402

The hierarchical permutation of shuffle-exchange networks  

E-Print Network (OSTI)

j. moving S(i) to node j ancl S(j) Lo no&le i. bit iotste right(b) shifts thc bits of the binary nunrber b right, onc pia&. c, moving Lhe leasL significant bit into the most signift icant bit position. I hr rill andi means thc opc ration is pcrforn... exchange(S(i). S(i-l)); S(i) rank: ? hit rotate right(S(i) tank); S(u(i)) = S(i); end IQI", for j:= m to lvg21V-I do S(u(i)): ? Sl'i); S(i) &lest: ? bit rotate left(S(i) dest); end for all no&1c: end; (procedure) In thc followi?g proc?eh&re Perm...

Chen, Shyh-Ching

1992-01-01T23:59:59.000Z

403

Energy-exchange stochastic models for non-equilibrium  

E-Print Network (OSTI)

Non-equilibrium steady states are subject to intense investigations but still poorly understood. For instance, the derivation of Fourier law in Hamiltonian systems is a problem that still poses several obstacles. In order to investigate non-equilibrium systems, stochastic models of energy-exchange have been introduced and they have been used to identify universal properties of non-equilibrium. In these notes, after a brief review of the problem of anomalous transport in 1-dimensional Hamiltonian systems, some boundary-driven interacting random systems are considered and the "duality approach" to their rigorous mathematical treatment is reviewed. Duality theory, of which a brief introduction is given, is a powerful technique to deal with Markov processes and interacting particle systems. The content of these notes is mainly based on the papers [10, 11, 12].

Chiara Franceschini; Cristian Giardina

2014-10-14T23:59:59.000Z

404

Revised Thermal Analysis of LANL Ion Exchange Column  

SciTech Connect

This document updates a previous calculation of the temperature distributions in a Los Alamos National Laboratory (LANL) ion exchange column.1 LANL operates two laboratory-scale anion exchange columns, in series, to extract Pu-238 from nitric acid solutions. The Defense Nuclear Facilities Safety Board has requested an updated analysis to calculate maximum temperatures for higher resin loading capacities obtained with a new formulation of the Reillex HPQ anion exchange resin. The increased resin loading capacity will not exceed 118 g plutonium per L of resin bed. Calculations were requested for normal operation of the resin bed at the minimum allowable solution feed rate of 30 mL/min and after an interruption of flow at the end of the feed stage, when one of the columns is fully loaded. The object of the analysis is to demonstrate that the decay heat from the Pu-238 will not cause resin bed temperatures to increase to a level where the resin significantly degrades. At low temperatures, resin bed temperatures increase primarily due to decay heat. At {approx}70 C a Low Temperature Exotherm (LTE) resulting from the reaction between 8-12 M HNO{sub 3} and the resin has been observed. The LTE has been attributed to an irreversible oxidation of pendant ethyl benzene groups at the termini of the resin polymer chains by nitric acid. The ethyl benzene groups are converted to benzoic acid moities. The resin can be treated to permanently remove the LTE by heating a resin suspension in 8M HNO{sub 3} for 30-45 minutes. No degradation of the resin performance is observed after the LTE removal treatment. In fact, heating the resin in boiling ({approx}115-120 C) 12 M HNO{sub 3} for 3 hr displays thermal stability analogous to resin that has been treated to remove the LTE. The analysis is based on a previous study of the SRS Frames Waste Recovery (FWR) column, performed in support of the Pu-238 production campaign for NASA's Cassini mission. In that study, temperature transients following an interruption of flow to the column were calculated. The transient calculations were terminated after the maximum resin bed temperature reached the Technical Standard of 60 C, which was set to prevent significant resin degradation. The LANL column differs from the FWR column in that it has a significantly smaller radius, 3.73 cm nominal versus approximately 28 cm. It follows that natural convection removes heat much more effectively from the LANL column, so that the column may reach thermal equilibrium. Consequently, the calculations for a flow interruption were extended until an approach to thermal equilibrium was observed. The LANL ion exchange process also uses a different resin than was used in the FWR column. The LANL column uses Reillex HPQ{trademark} resin, which is more resistant to attack by nitric acid than the Ionac 641{trademark} resin used in the FWR column. Heat generation from the resin oxidation reaction with nitric acid is neglected in this analysis since LANL will be treating the resin to remove the LTE prior to loading the resin in the columns. Calculations were performed using a finite difference computer code, which incorporates models for absorption and elution of plutonium and for forced and natural convection within the resin bed. Calculations for normal column operation during loading were performed using an initial temperature and a feed temperature equal to the ambient air temperature. The model for the normal flow calculations did not include natural convection within the resin bed. The no flow calculations were started with the temperature and concentration profiles at the end of the loading stage, when there would be a maximum amount of plutonium either adsorbed on the resin or in the feed solution in the column.

Laurinat, J

2006-04-11T23:59:59.000Z

405

Optically pumped spin-exchange polarized-electron source  

Science Journals Connector (OSTI)

We describe the operation of a prototype polarized-electron source. Rubidium vapor, contained in a cell, is optically pumped in the presence of a buffer gas. Unpolarized electrons from a tungsten filament are injected into the cell and extracted after undergoing spin exchange with the Rb atoms. We compare the performance of the source when different buffer gases are used. We measure a decrease in electron polarization as their injection energy increases, but find an unexpected regime at higher injection energies yielding increased electron polarization accompanied by a 40-fold increase in current, suggesting the production of slow secondary electrons in the target cell. With ethylene, we have measured electron currents of 4 ?A simultaneously with electron polarizations of 24%. This work offers the promise of a simple, benchtop, turnkey source of polarized electrons.

M. Pirbhai; J. Knepper; E. T. Litaker; D. Tupa; T. J. Gay

2013-12-31T23:59:59.000Z

406

Asymmetric Magnetization Reversal in Exchange-Biased Hysteresis Loops  

SciTech Connect

Polarized neutron reflectometry is used to probe the in-plane projection of the net-magnetization vector M(vector sign) of polycrystalline Fe films exchange coupled to twinned (110) MnF{sub 2} or FeF{sub 2} antiferromagnetic (AF) layers. The magnetization reversal mechanism depends upon the orientation of the cooling field with respect to the twinned microstructure of the AF, and whether the applied field is increased to (or decreased from) a positive saturating field; i.e., the magnetization reversal is asymmetric. The reversal of the sample magnetization from one saturated state to the other occurs via either domain wall motion or magnetization rotation on opposite sides of the same hysteresis loop. (c) 2000 The American Physical Society.

Fitzsimmons, M. R.; Yashar, P.; Leighton, C.; Schuller, Ivan K.; Nogues, J.; Majkrzak, C. F.; Dura, J. A.

2000-04-24T23:59:59.000Z

407

Coarse grained NN potential with Chiral Two Pion Exchange  

E-Print Network (OSTI)

We determine the chiral constants of the Nucleon-Nucleon Two Pion Exchange potential deduced from Chiral Perturbation Theory. By using a coarse grained representation of the short distance interactions with 30 parameters, the Partial Wave Analysis fit gives chi^2/dof = 1.1 to a mutually consistent set of 6713 data previously built from all published proton-proton and neutron proton scattering data from 1950 till 2013 with LAB energy below 350 MeV. We obtain (c1, c3, c4)=(-0.41+- 1.08,-4.66+- 0.60, 4.31+- 0.17)/GeV with an almost 100% anti-correlation between c1 and c3. We also provide the errors in the short distance parameters and propagate them to the deuteron properties and low partial waves phase shifts.

R. Navarro Perez; J. E. Amaro; E. Ruiz Arriola

2014-02-10T23:59:59.000Z

408

Advanced proton-exchange materials for energy efficient fuel cells.  

SciTech Connect

The ''Advanced Proton-Exchange Materials for Energy Efficient Fuel Cells'' Laboratory Directed Research and Development (LDRD) project began in October 2002 and ended in September 2005. This LDRD was funded by the Energy Efficiency and Renewable Energy strategic business unit. The purpose of this LDRD was to initiate the fundamental research necessary for the development of a novel proton-exchange membranes (PEM) to overcome the material and performance limitations of the ''state of the art'' Nafion that is used in both hydrogen and methanol fuel cells. An atomistic modeling effort was added to this LDRD in order to establish a frame work between predicted morphology and observed PEM morphology in order to relate it to fuel cell performance. Significant progress was made in the area of PEM material design, development, and demonstration during this LDRD. A fundamental understanding involving the role of the structure of the PEM material as a function of sulfonic acid content, polymer topology, chemical composition, molecular weight, and electrode electrolyte ink development was demonstrated during this LDRD. PEM materials based upon random and block polyimides, polybenzimidazoles, and polyphenylenes were created and evaluated for improvements in proton conductivity, reduced swelling, reduced O{sub 2} and H{sub 2} permeability, and increased thermal stability. Results from this work reveal that the family of polyphenylenes potentially solves several technical challenges associated with obtaining a high temperature PEM membrane. Fuel cell relevant properties such as high proton conductivity (>120 mS/cm), good thermal stability, and mechanical robustness were demonstrated during this LDRD. This report summarizes the technical accomplishments and results of this LDRD.

Fujimoto, Cy H.; Grest, Gary Stephen; Hickner, Michael A.; Cornelius, Christopher James; Staiger, Chad Lynn; Hibbs, Michael R.

2005-12-01T23:59:59.000Z

409

Iodine Loading of NO Aged Silver Exchanged Mordenite  

SciTech Connect

In an off-gas treatment system for used nuclear fuel processing, a solid sorbent will typically be exposed to a gas stream for months at a time. This gas stream may be at elevated temperature and could contain water vapor, gaseous nitrogen oxides (NO{sub x}), nitric acid vapors, and a variety of other constituents. For this reason, it is important to evaluate the effects of long-term exposure, or aging, on proposed sorbents. Silver exchanged mordenite (AgZ) is being studied at Oak Ridge National Laboratory (ORNL) to determine its iodine sorption capacity after long term exposure to increasingly more complex chemical environments. Studies previously conducted at ORNL investigated the effects of aging reduced silver exchanged mordenite (Ag{sup 0}Z) in dry air, moist air, and NO2. This study investigated the effects of extended exposure to nitric oxide (NO) gas on the iodine capture performance of Ag{sup 0}Z. A deep bed of Ag{sup 0}Z was aged in a 1% nitric oxide (NO) air stream, and portions of the bed were removed at pre-determined intervals. After being removed from the NO stream, each sample was loaded with iodine in a thin bed configuration. These samples were analyzed by neutron activation analysis (NAA) to quantify the iodine content in the sample. Samples were removed at one week and one month. A 78% decrease in sample capacity was seen after one week of exposure, with no further decrease observed after 1 month of aging. The observed loss in capacity is larger in magnitude than previous studies exposing Ag{sup 0}Z to dry air, moist air, or NO2 gas. The aging study was terminated after one month and repeated; this successfully demonstrated the reproducibility of the results.

Patton, K. K. [ORNL; Bruffey, S. H. [ORNL; Jubin, J. T. [ORNL; Walker, Jr., J. F. [ORNL

2014-09-30T23:59:59.000Z

410

DEVELOPMENT OF NOVEL ELECTROCATALYSTS FOR PROTON EXCHANGE MEMBRANE FUEL CELLS  

SciTech Connect

Fuel cells are electrochemical devices that convert the available chemical free energy directly into electrical energy, without going through heat exchange process. Of all different types of fuel cells, the Proton Exchange Membrane Fuel Cell (PEMFC) is one of the most promising power sources for stand-alone utility and electric vehicle applications. Platinum (Pt) Catalyst is used for both fuel and air electrodes in PEMFCs. However, carbon monoxide (CO) contamination of H{sub 2} greatly affects electro catalysts used at the anode of PEMFCs and decreases cell performance. The irreversible poisoning of the anode can occur even in CO concentrations as low as few parts per million (ppm). In this work, we have synthesized several novel elctrocatalysts (Pt/C, Pt/Ru/C, Pt/Mo/C, Pt/Ir and Pt/Ru/Mo) for PEMFCs. These catalysts have been tested for CO tolerance in the H{sub 2}/air fuel cell, using CO concentrations in the H{sub 2} fuel that varies from 10 to 100 ppm. The performance of the electrodes was evaluated by determining the cell potential against current density. The effects of catalyst composition and electrode film preparation method on the performance of PEM fuel cell were also studied. It was found that at 70 C and 3.5 atm pressure at the cathode, Pt-alloy catalyst (10 wt% Pt/Ru/C, 20 wt% Pt/Mo/C) were more CO tolerant than the 20 wt% Pt/C catalyst alone. It was also observed that spraying method was better than the brushing technique for the preparation of electrode film.

Shamsuddin Ilias

2003-04-24T23:59:59.000Z

411

EPR Line Shifts and Line Shape Changes due to Spin Exchange of Nitroxide Free Radicals in Liquids: 6. Separating Line Broadening due to Spin Exchange and Dipolar Interactions  

E-Print Network (OSTI)

EPR Line Shifts and Line Shape Changes due to Spin Exchange of Nitroxide Free Radicals in Liquids 23, 2008; ReVised Manuscript ReceiVed: January 12, 2009 EPR spectra of perdeuterated 2

Bales, Barney

412

A review of "Sick Economies: Drama, Mercantilism, and Disease in Shakespeares England." by Jonathan Gil Harris  

E-Print Network (OSTI)

of Venice, Harris says, ?In what might seem like an unholy marriage of the Eurovision Song Contest and The Love Connection, Portia is both the M.C. and the prize?? This book offers great insight into the Renaissance dis- courses of the body, the emergence...

Byron Nelson

2005-01-01T23:59:59.000Z

413

Gradient-corrected exchange potential with the correct asymptotic behavior and the corresponding exchange-energy functional obtained from the virial theorem  

Science Journals Connector (OSTI)

In density-functional theory (DFT), Perdew, Parr, Levy, and Balduz [Phys. Rev. Lett. 49, 1691 (1982)] have shown that for all the electronic systems, the energy of the highest occupied molecular orbital (HOMO) is equal to the negative of the ionization potential. This equality is not recovered within the different approximations of the exchange-correlation functional proposed in the literature. The main reason is that the exchange-correlation potentials of various functionals used in DFT calculations decay rapidly to zero whereas they should exhibit a Coulombic asymptotic -1/r behavior. In this work we propose a gradient-corrected (GC) exchange potential with a correct asymptotic -1/r form for large values of r. The energy of the HOMO calculated with this potential is improved compared to the local-density approximation (LDA) and to the GC functionals widely used in the DFT. Our HOMO eigenvalues are compared to the optimized-potential-model eigenvalues which are the exact values for the exchange-only potential. Using the fact that the LDA satisfies the virial theorem, the exchange energy corresponding to this GC exchange potential can be calculated under a simple assumption.

A. Lembarki; F. Rogemond; H. Chermette

1995-11-01T23:59:59.000Z

414

The Cost of Heat Exchanger Fouling in the U. S. Industries  

E-Print Network (OSTI)

by using a fouling factor in the design which results in additional capital cost of the heat exchanger. As fouling deposits build up in a heat exchanger, its performance will start to deteriorate and less energy will be transferred through the unit. A plot...

Rebello, W. J.; Richlen, S. L.; Childs, F.

415

Water softening by single-bowl ion exchange filter efficiency estimate and improvement  

E-Print Network (OSTI)

The article presents results of experimental investigations of the water softener in a laboratory installation of uninterruptible countercurrent ion exchange filter, which has a movable layer of ion exchange material. The installation provides for two simultaneous processes: counter ion sorption and regeneration of the sorbent with the processing capability of the sorbent in the regeneration zone by ultrasonic radiation.

Kostygin, V A; Kochetov, G M; Tugay, A M; Vashchenko, V N

2014-01-01T23:59:59.000Z

416

Deep-Sea Research I 53 (2006) 684688 Experimental evaluation of the isotopic exchange equilibrium  

E-Print Network (OSTI)

on the ion-exchange separation of boron isotopes. Bulletin of Chemical Society of Japan 50, 158­163]. Since strengths. r 2006 Elsevier Ltd. All rights reserved. Keywords: Boron isotopes; Boron isotopic exchange. Introduction The boron isotopic composition of marine carbonates constitutes a promising tracer of the paleo

Kaufman, Alan Jay

417

Reduced impact logging minimally alters tropical rainforest carbon and energy exchange  

Science Journals Connector (OSTI)

...land-atmosphere gas and energy exchange have not been...carbon, water, and energy exchange. Two sites...of Santarem, Para, Brazil (Fig. S1): km 67...for the Environment and Renewable Resources. Parallel measurements...climate: carbon and energy fluxes, net carbon storage, soil moisture...

Scott D. Miller; Michael L. Goulden; Lucy R. Hutyra; Michael Keller; Scott R. Saleska; Steven C. Wofsy; Adelaine Michela Silva Figueira; Humberto R. da Rocha; Plinio B. de Camargo

2011-01-01T23:59:59.000Z

418

Nanoparticle-crosslinked hydrogels as a class of efficient materials for separation and ion exchange  

E-Print Network (OSTI)

dye from a mixture of cationic and anionic dyes. These ion-exchange properties are driven the gel matrix. A comparison of the nanostructured gel with a typical cation-exchange resin (polystyrene the shrinking property of NIPA gels when heated. Additionally, we demonstrate the disassembly of Laponite

Raghavan, Srinivasa

419

Explosive shock processing of Pr2Fe14B/ Fe exchange-coupled nanocomposite bulk magnets  

E-Print Network (OSTI)

Explosive shock processing of Pr2Fe14B/ ­Fe exchange-coupled nanocomposite bulk magnets Z.Q. Jin between neigh- boring magnetic phases.1,2 The prerequisite for effective exchange coupling is a small are usually used to produce single-phase microcrystalline permanent magnets, are not favored in making bulk

Liu, J. Ping

420

Feasibility Study of Secondary Heat Exchanger Concepts for the Advanced High Temperature Reactor  

SciTech Connect

The work reported herein represents a significant step in the preliminary design of heat exchanger options (material options, thermal design, selection and evaluation methodology with existing challenges). The primary purpose of this study is to aid in the development and selection of the required heat exchanger for power production using either a subcritical or supercritical Rankine cycle.

Piyush Sabharwall

2011-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

The Phylogenetic Indian Buffet Process: A Non-Exchangeable Nonparametric Prior for Latent Features  

E-Print Network (OSTI)

The Phylogenetic Indian Buffet Process: A Non-Exchangeable Nonparametric Prior for Latent Features- exchangeable prior for a class of nonparametric latent feature models. Our point of departure is the In- dian. In this stochastic process--the Phylogenetic Indian Buffet Process (pIBP)--the probability that a diner chooses

Jordan, Michael I.

422

Exchange-correlation energy and the phase diagram of Si D. Alfe`1,2  

E-Print Network (OSTI)

Exchange-correlation energy and the phase diagram of Si D. Alfe`1,2 and M. J. Gillan2 1 Earth exchange-correlation energy, underpredict the melting temperature by 20 %. We present new first number s : 64.70.Dv, 81.30.Dz, 71.15.Pd The long-standing ambition of calculating phase diagrams from

Alfè, Dario

423

Towards an XML-based Data Exchange Mechanism for the Portuguese SMEs  

E-Print Network (OSTI)

business messages effectively. However, EDI technology still remains to be introduced in SMEs and (if1 Towards an XML-based Data Exchange Mechanism for the Portuguese SMEs Miguel Mira da Silva IST to be used by SMEs to exchange business messages. Although it seems a simple task, EDI has faced many

da Silva, Alberto Rodrigues

424

2012 National Trainers Exchange for Department of Energy Safety and Health Trainers  

Energy.gov (U.S. Department of Energy (DOE))

A trainers' exchange is designed for trainers to share best practices and new techniques through a series of workshops conducted by the trainers themselves. The goals are to meet and share ideas about how to create more effective and empowering training, improve training skills, and exchange best practices and techniques. Workshop Dates: May 78, 2012

425

Sister chromatid exchange test detection of toxin-induced damage in cultured fish  

E-Print Network (OSTI)

Sister chromatid exchange test detection of toxin-induced damage in cultured fish J Lobillo JV Animals; Toulouse-Auzeville, 10-13 July 1990) sister chromatid exchange (SCE) / genotoxicity / fish the effects of these wastes on the autochthonous cultured and wild fish species of the Southern Atlantic off

Paris-Sud XI, Université de

426

Numerical computation of 3D heat transfer in complex parallel convective exchangers using generalized Graetz modes  

E-Print Network (OSTI)

Numerical computation of 3D heat transfer in complex parallel convective exchangers using insights into the most con- tributing structure to exchanges and transfers. Several examples of heat, whilst many other can be found in a recent review [12]. As quoted in [12] conjugate heat transfer

Paris-Sud XI, Université de

427

Effects of winglets to augment tube wall heat transfer in louvered fin heat exchangers  

E-Print Network (OSTI)

Effects of winglets to augment tube wall heat transfer in louvered fin heat exchangers Paul A transfer along the tube wall of the compact heat exchanger through the use of winglets placed of attack, aspect ratio, direction, and shape, were all evaluated based on heat transfer augmentation

Thole, Karen A.

428

Error Analysis of Heat Transfer for Finned-Tube Heat-Exchanger Text-Board  

E-Print Network (OSTI)

In order to reduce the measurement error of heat transfer in water and air side for finned-tube heat-exchanger as little as possible, and design a heat-exchanger test-board measurement system economically, based on the principle of test-board system...

Chen, Y.; Zhang, J.

2006-01-01T23:59:59.000Z

429

CORRELATING EVAPORATION HEAT TRANSFER COEFFICIENT OF REFRIGERANT R-134a IN A PLATE HEAT EXCHANGER  

E-Print Network (OSTI)

1 CORRELATING EVAPORATION HEAT TRANSFER COEFFICIENT OF REFRIGERANT R-134a IN A PLATE HEAT EXCHANGER for evaporation heat transfer coefficient of refrigerant R-134a flowing in a plate heat exchanger. Correlation schemes proposed by Yan and Lin (1999b) for modeling the heat transfer coefficient in both a single- phase

Kandlikar, Satish

430

Application of Neural Network approach for Proton Exchange Membrane fuel cell systems  

Science Journals Connector (OSTI)

Artificial Intelligence (AI) techniques, particularly the Neural Networks (NNs), are recently having significant impact on power electronics. In a Proton Exchange Membrane (PEM) fuel cell system, there is a strong relationship between the available ... Keywords: NNC, PEM fuel cells, dynamic modelling, neural network controllers, neural networks, output variables, performance modelling, power electronics, proton exchange membrane

Mustapha Hatti; Mustapha Tioursi

2009-01-01T23:59:59.000Z

431

Scientific data exchange: a schema for HDF5-based storage of raw and analyzed data  

Science Journals Connector (OSTI)

Data Exchange, a simple data model designed to interface, or `exchange', data among different instruments and to enable sharing of data analysis tools, is presented. Its successful application to a variety of X-ray techniques, including tomography, fluorescence spectroscopy, fluorescence tomography and photon correlation spectroscopy, is described.

De Carlo, F.

2014-10-04T23:59:59.000Z

432

Condensing heat exchanger systems for residential/commercial furnaces and boilers. Phase IV  

SciTech Connect

The development of condensing heat exchanger systems is studied. In the work reported here, the focus is on the corrosion resistance of materials to condensate produced by gas-fired heating equipment, and the characterization of the spatial variation of condensation corrosivity in condensing heat exchangers.

Razgaitis, R.; Payer, J.H.; Talbert, S.G.; Hindin, B.; White, E.L.; Locklin, D.W.; Cudnik, R.A.; Stickford, G.H.

1985-10-01T23:59:59.000Z

433

Development of an spFRET method to measure structure changes in ion exchange proteins  

E-Print Network (OSTI)

transporter, major facilitator superfamily, membrane transport, membrane transporter, OxlT, single molecule, spFRET, transport protein. Tightly coupled ion exchangers, such as the AE anion exchange systems only take place at an appreciable rate if a suitable substrate ion is bound to the transport site

Novotny, Lukas

434

Conformational Analysis of Disordered Proteins Using H/D Exchange Mass Spectrometry  

E-Print Network (OSTI)

Conformational Analysis of Disordered Proteins Using H/D Exchange Mass Spectrometry By Copyright 2013 Theodore Robert Keppel Submitted to the graduate degree program in Chemistry and the Graduate Faculty of the University of Kansas...: Conformational Analysis of Disordered Proteins Using H/D Exchange Mass Spectrometry ______________________________ Chairperson David Weis Date Approved: 02/01/2013 iii Abstract Intrinsically disordered proteins (IDPs...

Keppel, Theodore Robert

2013-05-31T23:59:59.000Z

435

An interoperable XML encoding for the exchange of Spatial OLAP data cubes in SOA environments  

E-Print Network (OSTI)

An interoperable XML encoding for the exchange of Spatial OLAP data cubes in SOA environments addresses the exchange of complete SOLAP data cubes (comprising both spatial and descriptive data data cubes, containing both spatial and de- scriptive data and metadata. It enables the delivery

436

Fouling of HVAC Fin and Tube Heat Exchangers Jeffrey Siegel and Van P. Carey  

E-Print Network (OSTI)

Fouling of heat exchangers used in heating, ventilating, and air conditioning (HVAC) systems is important contributor to overall energy use and peak electric demand. Furthermore, the location of heat exchangers in HVAC systems means that if bioaerosols containing bacteria, fungi, and viruses deposit on heat

437

Ion exchange resins. (Latest citations from the EI Compendex*plus database). Published Search  

SciTech Connect

The bibliography contains citations concerning preparation, properties, and applications of ion exchange resins. Applications include water and waste treatment, chemical recovery, separation, purification, catalysis, desalination, and ore treatment. Regeneration and disposal of ion exchange resins are also covered. (Contains 250 citations and includes a subject term index and title list.)

NONE

1995-01-01T23:59:59.000Z

438

Ion exchange resins. (Latest citations from the EI Compendex*plus database). Published Search  

SciTech Connect

The bibliography contains citations concerning preparation, properties, and applications of ion exchange resins. Applications include water and waste treatment, chemical recovery, separation, purification, catalysis, desalination, and ore treatment. Regeneration and disposal of ion exchange resins are also covered. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

NONE

1996-01-01T23:59:59.000Z

439

Ion exchange resins. (Latest citations from the EI Compendex*plus database). Published Search  

SciTech Connect

The bibliography contains citations concerning preparation, properties, and applications of ion exchange resins. Applications include water and waste treatment, chemical recovery, separation, purification, catalysis, desalination, and ore treatment. Regeneration and disposal of ion exchange resins are also covered. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1993-12-01T23:59:59.000Z

440

Predicting the net carbon exchanges of crop rotations in Europe with an agro-ecosystem model  

E-Print Network (OSTI)

Predicting the net carbon exchanges of crop rotations in Europe with an agro-ecosystem model S.Lehuger@art.admin.ch. Fax: (+41) 44 377 72 01. Phone: (+41) 44 377 75 13. hal-00414342,version2-1Sep2010 #12;Abstract Carbon and measuring land-atmosphere carbon exchanges from arable lands are important tasks to predict the influence

Boyer, Edmond

Note: This page contains sample records for the topic "mercantile exchange cme" 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

NAO influence on net sea ice production and exchanges in the Arctic region: a numerical study  

E-Print Network (OSTI)

ice cover suppresses the development of thermal insulation during the ice formation processNAO influence on net sea ice production and exchanges in the Arctic region: a numerical study Aixue The variability of net sea ice production and sea ice exchange between the Arctic and its adjacent seas

Hu, Aixue

442

NAO influence on net sea ice production and exchanges in the Arctic region  

E-Print Network (OSTI)

suppresses the development of thermal insulation during the ice formation process. The North AtlanticNAO influence on net sea ice production and exchanges in the Arctic region Aixue Hu National Center of the net sea ice production and the sea ice exchanges between the Arctic and its adjacent seas are studied

Hu, Aixue

443

Oligoacetic Acid Characterization by Isocratic and Linear Salt Gradient Anion-Exchange Chromatography  

Science Journals Connector (OSTI)

......ion-exchange Gibbs free energy (Gexchange) was calcu...constant increment in the energy of exchange for the addition...as the increment per car- boxylic acid group...oligomers provided an alternative and convenient method...calculation of the Gibbs free energy of adsorption for biomolecules......

Hong Li; Costas S. Patrickios

2001-03-01T23:59:59.000Z

444

Eligibility for Medi-Cal and the Health Insurance Exchange in California under  

E-Print Network (OSTI)

Eligibility for Medi-Cal and the Health Insurance Exchange in California under the Affordable Care) will expand access to coverage and make health care more affordable for low- and middle-income Californians version of "Eligibility for Medi-Cal and the Health Insurance Exchange in California under Federal Health

Kammen, Daniel M.

445

Charge-exchange collisions in interpenetrating laser-produced magnesium plasmas  

E-Print Network (OSTI)

Charge-exchange collisions in interpenetrating laser-produced magnesium plasmas S.S. HARILAL,1 C charge-exchange collisions between highly charged Mg ions in colliding laser-produced magnesium plasmas magnesium plasmas. 1. INTRODUCTION Several applications of laser-produced plasmas involve an experimental

Harilal, S. S.

446

Comparative studies on authentication and key exchange methods for 802.11 wireless LAN  

Science Journals Connector (OSTI)

IEEE 802.11 wireless LAN has become one of the hot topics on the design and development of network access technologies. In particular, its authentication and key exchange (AKE) aspects, which form a vital building block for modern security mechanisms, ... Keywords: Authentication, Confidentiality, Key exchange, Security, WLAN

Jun Lei, Xiaoming Fu, Dieter Hogrefe, Jianrong Tan

2007-08-01T23:59:59.000Z

447

Hydrogen exchange studies of protein structure Tanya M Raschke and Susan Marqusee*  

E-Print Network (OSTI)

80 Hydrogen exchange studies of protein structure Tanya M Raschke and Susan Marqusee* Hydrogen partially folded ensembles present at equilibrium. Analysis of hydrogen exchange mechanisms has revealed intrinsicexchangerate kobs observedexchangerate NH amide hydrogen AGHx free energy of the opening reaction Introduction

Raschke, Tanya M.

448

Proton Exchange Membrane Fuel Cell degradation prediction based on Adaptive Neuro Fuzzy Inference Systems  

E-Print Network (OSTI)

Proton Exchange Membrane Fuel Cell degradation prediction based on Adaptive Neuro Fuzzy Inference online XX XX XXXX Keywords: Proton Exchange Membrane fuel cell degradation, Prognostic and Health nominal operating condition of a PEM fuel cell stack. It proposes a methodology based on Adaptive Neuro

Paris-Sud XI, Université de

449

Sea surface exchanges of momentum, heat, and freshwater determined by satellite remote sensing  

E-Print Network (OSTI)

1 Sea surface exchanges of momentum, heat, and freshwater determined by satellite remote sensing Freshwater flux Latent heat flux Longwave radiation Satellite remote sensing Sea surface flux estimation Sensible heat flux Shortwave radiation Surface wind fields 2 #12;Sea surface exchanges of momentum, heat

Yu, Lisan

450

Extended-soft-core NN potentials in momentum space. I. Pseudoscalar-pseudoscalar exchange potentials  

Science Journals Connector (OSTI)

A momentum-space representation is derived for the Nijmegen extended-soft-core interactions. The partial wave projection of this representation is carried through, in principle for two-meson exchange in general. Explicit results for the momentum-space partial wave NN potentials from PS-PS exchange are given.

Th. A. Rijken; H. Polinder; J. Nagata

2002-10-29T23:59:59.000Z

451

Airway Gas Exchange and Exhaled Biomarkers Steven C. George*1,2  

E-Print Network (OSTI)

Airway Gas Exchange and Exhaled Biomarkers Steven C. George*1,2 and Michael P. Hlastala3,4 ABSTRACT. However, despite a significantly smaller surface area, and thicker barrier separating the gas phase from the blood when compared to the alveolar region, the airway tree can participate in gas exchange under

George, Steven C.

452

Oxygen isotopic exchange: A useful tool for characterizing oxygen conducting oxides  

E-Print Network (OSTI)

Oxygen isotopic exchange: A useful tool for characterizing oxygen conducting oxides Bassat J we obtain in both cases data concerning the oxygen diffusion in the bulk and the oxygen exchange with regards to the oxygen reduction reaction. Detailed experimental and analytical processes are given

Paris-Sud XI, Université de

453

15N2 formation and fast oxygen isotope exchange during pulsed...  

NLE Websites -- All DOE Office Websites (Extended Search)

N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOxCeO2. 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOx...

454

A Simple Control Scheme for Near-optimal Operation of Parallel Heat Exchanger Systems  

E-Print Network (OSTI)

. In the chemical and process industries, large amounts of energy can be saved by using heat recovery in heat exchanger networks, which transfer energy in form of heat Corresponding author: email: skoge@ntnu.no, phone exchanger networks for saving energy and costs has led to a large body of research, and most

Skogestad, Sigurd

455

Modeling bronchial circulation with application to soluble gas exchange: description and sensitivity analysis  

E-Print Network (OSTI)

Modeling bronchial circulation with application to soluble gas exchange: description into an existing model that describes the simul- taneous exchange of heat, water, and a soluble gas in the airways and represents an avenue to understanding the ex- change process. The soluble gas used in the model simulations

George, Steven C.

456

Heat energy Q: -energy exchanged between systems if they have a different temperature  

E-Print Network (OSTI)

About heat Heat energy Q: - energy exchanged between systems if they have a different temperature - heat flows from higher to lower temperature - without temperature difference, no heat is exchanged If a system is receiving or releasing heat, then this heat is called a) Sensible heat, if the system changes

Boyd, Sylke

457

Taint-Exchange: a Generic System for Cross-process and Cross-host Taint Tracking  

E-Print Network (OSTI)

Taint-Exchange: a Generic System for Cross-process and Cross-host Taint Tracking Angeliki Zavou also utilized to track data across processes and hosts to shed light on the interaction of distributed components, but also for security purposes. This paper presents Taint-Exchange, a generic cross- process

Yang, Junfeng

458

LAMES MINCES (4 partie) :RESONANCE, EFFETS DE SURFACE-MAGNETIC CONTROL OF EXCHANGE TORQUES  

E-Print Network (OSTI)

the value of Vziii. It should therefore be possible to vary the effective exchange constant of certain.0 Exchange-coupled TE inhomogeneous eigen- waves. -Recently, Morgenthaler [I] pointed out starting point is consideration of the eigenwaves in a semi-infinite ferromagnet. Following Auld [3

Paris-Sud XI, Université de

459

Role of Cation-Water Disorder during Cation Exchange in Small-Pore Zeolite  

NLE Websites -- All DOE Office Websites (Extended Search)

Role of Cation-Water Disorder during Cation Exchange in Small-Pore Zeolite Role of Cation-Water Disorder during Cation Exchange in Small-Pore Zeolite Sodium Natrolite Thursday, October 31, 2013 Structural changes leading to disordering of the cation-water arrangement within the pores of zeolite natrolite while exchanging sodium (Na+) with potassium (K+) have been investigated using x-ray diffraction (XRD) and oxygen K-edge x-ray absorption spectroscopy (XAS). cation in zeolite sodium natrolite fig1 Figure 1) Artistic representation of the natrolite channel, which opens progressively as a function of the exchanging cation's size. The small golf ball represents ordered sodium cations in a closed elliptical channel, whereas the large baseball represents a disordered cesium cation in an open circular channel. The most fundamental chemical property of zeolites is ion exchange. A

460

Depth Profile of Uncompensated Spins in an Exchange-Bias System  

NLE Websites -- All DOE Office Websites (Extended Search)

Depth Profile of Uncompensated Spins in an Exchange-Bias System Print Depth Profile of Uncompensated Spins in an Exchange-Bias System Print The phenomenon known as exchange bias at the interface between a ferromagnet and an antiferromagnet is currently a subject of intense research because of its applications in the magnetic recording and read-head industries. An international collaboration headed by researchers from the University of California, San Diego, has used resonant x-ray scattering and polarized-neutron reflectometry to determine the depth-dependent magnetization in an exchange-biased sample. These results provide atomic-level insights into the mechanism of exchange bias, specifically the involvement of mutual interactions between two kinds of uncompensated spins in the antiferromagnet and spins in the ferromagnet.

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Depth Profile of Uncompensated Spins in an Exchange-Bias System  

NLE Websites -- All DOE Office Websites (Extended Search)

Depth Profile of Uncompensated Depth Profile of Uncompensated Spins in an Exchange-Bias System Depth Profile of Uncompensated Spins in an Exchange-Bias System Print Wednesday, 25 January 2006 00:00 The phenomenon known as exchange bias at the interface between a ferromagnet and an antiferromagnet is currently a subject of intense research because of its applications in the magnetic recording and read-head industries. An international collaboration headed by researchers from the University of California, San Diego, has used resonant x-ray scattering and polarized-neutron reflectometry to determine the depth-dependent magnetization in an exchange-biased sample. These results provide atomic-level insights into the mechanism of exchange bias, specifically the involvement of mutual interactions between two kinds of uncompensated spins in the antiferromagnet and spins in the ferromagnet.

462

Quality Assurance Exchange September 2005, Volume 1 Issue 2 | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Quality Assurance Exchange September 2005, Volume 1 Issue 2 Quality Assurance Exchange September 2005, Volume 1 Issue 2 Quality Assurance Exchange September 2005, Volume 1 Issue 2 Quality Assurance Exchange September 2005, Volume 1 Issue 2 U.S. Department of Energy, Off ice of Corporate Performance Assessment Off ice of Quality Assurance Programs (EH-31) IN THE SPOTLIGHT: INTERVIEW WITH CHIP LAGDON Acting Chief of Nuclear Safety Energy, Science and Environment In a recent interview, Chip Lagdon, Acting Chief of Nuclear Safety for Energy, Science and Environment (ESE) briefly discussed the role of the Central Technical Authority (CTA) and his role in the new organization. In addition, he highlighted the challenges for and the benefits to DOE as a result of the recently issued DOE Order 414.1C, Quality Assurance. Quality Assurance Exchange September 2005, Volume 1 Issue 2

463

Depth Profile of Uncompensated Spins in an Exchange-Bias System  

NLE Websites -- All DOE Office Websites (Extended Search)

Depth Profile of Uncompensated Spins in an Exchange-Bias System Print Depth Profile of Uncompensated Spins in an Exchange-Bias System Print The phenomenon known as exchange bias at the interface between a ferromagnet and an antiferromagnet is currently a subject of intense research because of its applications in the magnetic recording and read-head industries. An international collaboration headed by researchers from the University of California, San Diego, has used resonant x-ray scattering and polarized-neutron reflectometry to determine the depth-dependent magnetization in an exchange-biased sample. These results provide atomic-level insights into the mechanism of exchange bias, specifically the involvement of mutual interactions between two kinds of uncompensated spins in the antiferromagnet and spins in the ferromagnet.

464

Ion Exchange Media for Reduction of Liquid Radwaste in Commercial Power Plants  

SciTech Connect

Ion exchange resins currently make up as much as one-half of all radioactive waste generated by commercial nuclear power plants. A major challenge is reduction of the quantity of ion exchange media requiring disposal. Although the amount of spent ion exchange resins disposed has decreased year after year, a new urgency has arisen with the pending closure of a major disposal site in 2008. This paper explores whether ion exchange resins also can be used to potentially reduce radioactive liquid waste volumes and / or limit them to Class A wastes only. Source term reduction and minimization of manpower exposure to radioactivity are other important goals. Specialty ion exchange products may help to achieve source term reduction of certain radionuclides. Some established operations, data, and process concepts are presented to address these critical issues encountered in liquid radwaste management. (authors)

Yarnell, P.A. [Graver Technologies, LLC, Glasgow, DE (United Kingdom); Tavares, A. [Graver Technologies, LLC, Newark, NJ (United States)

2008-07-01T23:59:59.000Z

465

Treating Coulomb exchange contributions in relativistic mean field calculations: why and how  

E-Print Network (OSTI)

The energy density functional (EDF) method is very widely used in nuclear physics, and among the various existing functionals those based on the relativistic Hartree (RH) approximation are very popular because the exchange contributions (Fock terms) are numerically rather onerous to calculate. Although it is possible to somehow 'mock up' the effects of meson-induced exchange terms by adjusting the meson-nucleon couplings, the lack of Coulomb exchange contributions hampers the accuracy of predictions. In this note, we show that the Coulomb exchange effects can be easily included with a good accuracy in a perturbative approach. Therefore, it would be desirable for future relativistic EDF models to incorporate Coulomb exchange effects, at least to some order of perturbation.

Nguyen Van Giai; Haozhao Liang; Huai-Qiang Gu; Wenhui Long; Jie Meng

2014-05-15T23:59:59.000Z

466

Intermediate-Scale Ion Exchange Removal of Cesium and Technetium from Hanford Tank 241-AN-102  

SciTech Connect

Ion exchange tests have been completed at the Savannah River Technology Center for British Nuclear Fuels Limited, Inc. as part of the Hanford River Protection Project. Radioactive cesium and technetium (pertechnetate form only) were removed by ion exchange from a sample of Envelope C salt solution from Hanford Tank 241-AN-102 (sample volume: approximately 17 L at 4.8 M Na plus). The original sample was diluted and subjected to strontium/transuranics (Sr/TRU) precipitation and filtration processes before ion exchange processing was performed. Batch contact and column tests for the ion exchange removal of cesium and technetium were then completed on the Sr/TRU-decontaminated product. Previous ion exchange tests were conducted on a smaller portion (0.5 L) of the Tank 241-AN-102 supernate sample, which had been similarly pretreated, and the results were reported in a separate document.

King, W.D.

2001-02-15T23:59:59.000Z

467

Intermediate-Scale Ion Exchange Removal of Cesium and Technetium from Hanford Tank 241-AN-102  

SciTech Connect

Ion exchange tests have been completed at the Savannah River Technology Center for British Nuclear Fuels Limited, Inc. as part of the Hanford River Protection Project. Radioactive cesium and technetium (pertechnetate form only) were removed by ion exchange from a sample of Envelope C salt solution from Hanford Tank 241-AN-102 (sample volume: approximately 18 L at 4.8 M Na plus). The original sample was diluted and subjected to strontium/transuranics (Sr/TRU) precipitation and filtration processes before ion exchange processing was performed. Batch contact and column tests for the ion exchange removal of cesium and technetium were then completed on the Sr/TRU-decontaminated product. Previous ion exchange tests were conducted on a smaller portion (0.5 L) of the Tank 241-AN-102 supernate sample, which had been similarly pretreated, and the results were reported in a separate document.

King, W.D.

2001-09-10T23:59:59.000Z

468

Test results of a Stirling engine utilizing heat exchanger modules with an integral heat pipe  

SciTech Connect

The Heat Pipe Stirling Engine (HP-1000), a free-piston Stirling engine incorporating three heat exchanger modules, each having a sodium filled heat pipe, has been tested at the NASA-Lewis Research Center as part of the Civil Space Technology Initiative (CSTI). The heat exchanger modules were designed to reduce the number of potential flow leak paths in the heat exchanger assembly and incorporate a heat pipe as the link between the heat source and the engine. An existing RE-1000 free-piston Stirling engine was modified to operate using the heat exchanger modules. This paper describes heat exchanger module and engine performance during baseline testing. Condenser temperature profiles, brake power, and efficiency are presented and discussed.

Skupinski, R.C.; Tower, L.K.; Madi, F.J.; Brusk, K.D.

1993-04-01T23:59:59.000Z

469

Denitration of Rocky Flats Ion-Exchange Resins: Recommendation of Denitration Processes, October 19, 1995  

SciTech Connect

Resin denitration via anion-exchange is an implementable process that can effectively mitigate the hazards associated with stored resins in which the bulk of the nitrate consists of an "exchangeable nitrate" ionically bound to the cationic sites of the anion-exchange resins. Salicylate has been selected as the exchange anion of choice because of its superior selectivity for the Rocky Flats resins and its unique potential for comprehensive recovery and recycle. This report outlines a single recommended resin denigration procedure that is reasonably independent of the resin composition and the current stored form. This procedure is not optimized but rather seeks to `over-treat' the resins so that a single procedure works for the variety of stored resins. The recommended treatment with sodium salicylate reduces resins by 95-99+% the measured exothermic behavior of the ion-exchange.

Jacob Espinoza; Mary Barr; Wayne Smith

1998-12-01T23:59:59.000Z

470

Controlled interface profile in SmCo/Fe exchange-spring magnets Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439  

E-Print Network (OSTI)

-spring permanent magnets enhances the exchange coupling effectiveness without modifying the local composition are complementary or even mutually exclusive. Exchange-spring nanocomposite magnets1,2 consist of exchange coupled of the exchange-spring magnets. For example, interfacial condi- tions influence the exchange coupling

Liu, J. Ping

471

Development of high-temperature heat exchanger for hydrogen combustion turbine system  

SciTech Connect

New Rankine Cycle and Topping Regenerative Cycle are representative 500MW power generation systems for a hydrogen combustion turbine (HCT). The energy efficiency based on HHV of these is expected to be over 60% because the inlet temperature of turbine can be increased to 1,970K. These systems comprise various heat exchangers. Especially, the development of high temperature heat exchanger dealing with the high temperature and pressure steam is very important to realize the hydrogen combustion turbine system. The high-temperature heat exchanger of New Rankine Cycle is a supercritical heat recovery steam generator operating at pressure of 36MPa. This heat exchanger is heated by steam at temperature of 1,390K. On the other hand, Topping Regenerative Cycle has two high-temperature heat exchangers. One is a regenerator operating at pressure of 37MPa. The other is a regenerator operating at pressure of 5MPa. Both regenerators are heated by steam at temperature of 1,030K. The following are the principal development subject of high-temperature heat exchanger: (1) Improving the heat transfer characteristics to achieve the compact heat exchanger, and (2) Planning the heat exchanger structure suitable for the high thermal stress. To improve a heat transfer characteristic of the high-temperature heat exchangers, a parameter survey is conducted to optimize a tube arrangement and a fin configuration on tube outside and/or inside. The heat transfer areas are minimized through using the tubes with an extended heat transfer surface on both sides of a tube. Structural integrity is also estimated by conducting a structural analysis for the critical parts of the high-temperature heat exchangers.

Takakuwa, Akihiro; Mochida, Yoshio

1999-07-01T23:59:59.000Z

472

THERMAL MODELING OF ION EXCHANGE COLUMNS WITH SPHERICAL RF RESIN  

SciTech Connect

Models have been developed to simulate the thermal performance of RF columns fully loaded with radioactive cesium. Temperature distributions and maximum temperatures across the column were calculated during Small Column Ion Exchange (SCIX) process upset conditions with a focus on implementation at Hanford. A two-dimensional computational modeling approach was taken to include conservative, bounding estimates for key parameters such that the results will provide the maximum centerline temperatures achievable under the design configurations using a feed composition known to promote high cesium loading on RF. The current full-scale design for the SCIX system includes a central cooling tube, and one objective of these calculations was to examine its elimination to simplify the design. Results confirmed that a column design without a central cooling tube is feasible for RF, allowing for the possibility of significant design simplifications if it can be assumed that the columns are always filled with liquid. With active cooling through the four outer tubes, the maximum column diameter expected to maintain the temperature below the assumed media and safety limits is 26 inches, which is comparable to the current design diameter. Additional analysis was conducted to predict the maximum column temperatures for the previously unevaluated accident scenario involving inadvertent drainage of liquid from a cesium-saturated column, with retention of the ion exchange media and cesium in the column. As expected, much higher maximum temperatures are observed in this case due to the poor heat transfer properties of air versus liquid. For this hypothetical accident scenario involving inadvertent and complete drainage of liquid from a cesium-saturated column, the modeling results indicate that the maximum temperature within a 28 inch diameter RF column with external cooling is expected to exceed 250 C within 2 days, while the maximum temperature of a 12 inch column is maintained below 100 C. In addition, the calculation results demonstrate that the cooling tube system external to an air-filled column is not highly effective at reducing the maximum temperature, but the baseline design using a central cooling tube inside the column provides sufficient cooling to maintain the maximum temperature near the assumed safety limit.

Lee, S.; King, W.

2009-12-30T23:59:59.000Z

473

On the Exchange Properties of the Neutron-Proton Interaction  

Science Journals Connector (OSTI)

To determine the exchange properties of the neutron-proton interaction, the existing knowledge of the neutron-proton force in states of even parity, gained from the properties of the deuteron ground state and low energy scattering experiments, must be supplemented by information concerning the interaction in odd parity states, information which can be obtained only by observations on high energy neutron-proton scattering and deuteron photo-disintegration by energetic ?-rays. Calculations have been performed for three types of interactions with the purpose of testing the sensitivity of such experiments to variations of the exchange operator dependence of the interaction. These interactions are analogous, in isotopic spin dependence, to the potentials predicted by three forms of current mesotron theory: (I) "Symmetrical" (II) "Charged" (III) "Neutral." With the interaction in even parity states described by rectangular well potentials with constants adjusted to fit the binding energy and quadripole moment of the deuteron, and the cross section for slow neutron-proton scattering, each of these three potentials makes a definite prediction concerning the interaction in odd parity states. The scattering calculations were performed for a neutron energy of 15.3 Mev. The results for total cross sections and angular distributions in the center of mass system are as follows: {(I)?,=0.62110-24cm2,?(?)?(1-0.080cos ?+0.077cos2 ?)}{(II)?,=0.66610-24cm2,?(?)?(1+0.126cos ?+0.042cos2 ?)}{(III)?,=0.98310-24cm2,?(?)?(1+0.932cos ?+0.457cos2 ?).}The energy of the Li+H ?-rays (??=17.5 MeV) was adopted for the computations on photo-disintegration. The three theories under discussion predict the following electric dipole total cross sections and angular distributions {(I)?,=0.76810-27cm2,?(?)?(sin2?+0.015)}{(II)?,=0.72310-27cm2,?(?)?(sin2?+0.077)}{(III)?,=0.37610-27cm2,?(?)?(sin2?+0.36).} Calculations have also been performed for the small cross sections arising from magnetic dipole and electric quadripole absorption. The spherically symmetrical term in the electric dipole angular distribution is a consequence of the noncentral forces invoked to explain the deuteron quadripole moment. High energy photo-disintegration angular measurements thus constitute the most sensitive test of both the isotopic spin dependence of the neutron-proton interaction and the existence of noncentral forces.

William Rarita and Julian Schwinger

1941-04-01T23:59:59.000Z

474

Potassium-Calcium Exchange in a Multireactive Soil System: II. Thermodynamics1 P. M. JARDINE ANDD. L. SPARKS2  

E-Print Network (OSTI)

ions and sup- ports the hypothesis of the multireactive natureof the soil. Although K was selectively energy of ex- change, enthalpy of exchange, entropy of exchange. Jardine, P.M., and D.L. Sparks. 1984

Sparks, Donald L.

475

Erosion of heat exchanger tubes in fluidized beds  

SciTech Connect

This final report describes the activities of the 3-year project entitled Erosion of Heat Exchanger Tubes In Fluidized Beds.'' which was completed at the end of 1990. Project accomplishments include the collection of a substantial body of wear data In a 24in. [times] 24in. fluidized bed, comparative wear results In a 6in. [times] 6in. fluidized bed, the development of a dragometer and the collection of a comprehensive set of drag force data in the 24in. [times] 24in. bed, Fast Fourier Transform (FFT) analysis of bubble probe data to establish dominant bubble frequencies in the 24in. [times] 24in. bed, the use of a heat flux gauge for measurement of heat transfer coefficients in the 24in. [times] 24in. bed and the modeling of the tube wear in the 24in. [times] 24in. bed. Analysis of the wear data from the 24in. square bed indicates that tube wear increases with increase in superficial velocity, and with increase in tube height. The latter effect is a result of the tubes higher up in the bed seeing greater movement of dense phase than tubes lower down In the bed. In addition, tube wear was found to decrease with increase in particle size, for constant superficial velocity. Three models of tube wear were formulated and provided acceptable prediction of wear when compared with the experimental data.

Johnson, E.K.; Flemmer, R.L.C.

1991-01-01T23:59:59.000Z

476

Deposition of biological aerosols on HVAC heat exchangers  

SciTech Connect

Many biologically active materials are transported as bioaerosols 1-10 {micro}m in diameter. These particles can deposit on cooling and heating coils and lead to serious indoor air quality problems. This paper investigates several of the mechanisms that lead to aerosol deposition on fin and tube heat exchangers. A model has been developed that incorporates the effects of several deposition mechanisms, including impaction, Brownian and turbulent diffusion, turbophoresis, thermophoresis, diffusiophoresis, and gravitational settling. The model is applied to a typical range of air velocities that are found in commercial and residential HVAC systems 1 - 6 m/s (200 - 1200 ft/min), particle diameters from 1 - 8 {micro}m, and fin spacings from 3.2 - 7.9 fins/cm (8 - 16 fins/inch or FPI). The results from the model are compared to results from an experimental apparatus that directly measures deposition on a 4.7 fins/cm (12 FPI) coil. The model agrees reasonably well with this measured data and suggests that cooling coils are an important sink for biological aerosols and consequently a potential source of indoor air quality problems.

Siegel, Jeffrey; Walker, Ian

2001-09-01T23:59:59.000Z

477

Interfacial Water-Transport Effects in Proton-Exchange Membranes  

SciTech Connect

It is well known that the proton-exchange membrane is perhaps the most critical component of a polymer-electrolyte fuel cell. Typical membranes, such as Nafion(R), require hydration to conduct efficiently and are instrumental in cell water management. Recently, evidence has been shown that these membranes might have different interfacial morphology and transport properties than in the bulk. In this paper, experimental data combined with theoretical simulations will be presented that explore the existence and impact of interfacial resistance on water transport for Nafion(R) 21x membranes. A mass-transfer coefficient for the interfacial resistance is calculated from experimental data using different permeation cells. This coefficient is shown to depend exponentially on relative humidity or water activity. The interfacial resistance does not seem to exist for liquid/membrane or membrane/membrane interfaces. The effect of the interfacial resistance is to flatten the water-content profiles within the membrane during operation. Under typical operating conditions, the resistance is on par with the water-transport resistance of the bulk membrane. Thus, the interfacial resistance can be dominant especially in thin, dry membranes and can affect overall fuel-cell performance.

Kienitz, Brian; Yamada, Haruhiko; Nonoyama, Nobuaki; Weber, Adam

2009-11-19T23:59:59.000Z

478

DEVELOPMENT OF NOVEL ELECTROCATALYSTS FOR PROTON EXCHANGE MEMBRANE FUEL CELLS  

SciTech Connect

The Proton Exchange Membrane Fuel Cell (PEMFC) is one of the most promising power sources for stand-alone utility and electric vehicle applications. Platinum (Pt) Catalyst is used for both fuel and air electrodes in PEMFCs. However, carbon monoxide (CO) contamination of H{sub 2} greatly affects electro catalysts used at the anode of PEMFCs and decreases cell performance. The irreversible poisoning of the anode can occur even in CO concentrations as low as few parts per million (ppm). In this work, we have synthesized several novel elctrocatalysts (Pt/C, Pt/Ru/C, Pt/Mo/C, Pt/Ir and Pt/Ru/Mo) for PEMFCs. These catalysts have been tested for CO tolerance in the H{sub 2}/air fuel cell, using CO concentrations in the H{sub 2} fuel that varies from 10 to 100 ppm. The performance of the electrodes was evaluated by determining the cell potential against current density. The effects of catalyst composition and electrode film preparation method on the performance of PEM fuel cell were also studied. It was found that at 70 C and 3.5 atm pressure at the cathode, Pt-alloy catalyst (10 wt% Pt/Ru/C, 20 wt% Pt/Mo/C) were more CO tolerant than the 20 wt% Pt/C catalyst alone. It was also observed that spraying method was better than the brushing technique for the preparation of electrode film.

Shamsuddin Ilias

2002-06-11T23:59:59.000Z

479

DEVELOPMENT OF NOVEL ELECTROCATALYST FOR PROTON EXCHANGE MEMBRANE FUEL CELLS  

SciTech Connect

Proton-exchange membrane fuel cell (PEMFC) is one of the strongest contenders as a power source for space & electric vehicle applications. Platinum catalyst is used for both fuel and air electrodes in PEMFCs. CO contamination of H{sub 2} greatly affects electrocatalysts used at the anode of polymer electrolyte fuel cells and decrease the cell performance. Pt-Ru catalyst had been recognized to alleviate this problem by showing better tolerance to CO poisoning than only Pt catalyst. This irreversible poisoning of the anode can be happened even in concentrations as little as a few ppm, and therefore, require expensive scrubbing to reduce the contaminant concentration to acceptable level. In order to commercialize this environmentally sound source of energy/power system, development of suitable impurity tolerant catalyst is needed. This project will develop novel electrocatalysts for the PEMFCs and demonstrate the feasibility of a H{sub 2}/O{sub 2} fuel cell base on these materials. This project, if successful, will reduce the costs due to reduce Pt catalyst loading or use non-precious metals. It will increase the PEM fuel cell performance by increasing catalyst tolerance to methanol oxidation intermediate products (CO) and fuel impurities (H{sub 2}S), which will generate substantial interest for commercialization of the PEM fuel cell technology.

Shamsuddin Ilias

2000-01-19T23:59:59.000Z

480

Heat exchanger materials for fluidized bed coal combustors  

SciTech Connect

The 4500-h test in the FluiDyne AFBC tells us three things: (1) ferritic and austenitic superheater alloys perform well to approximately 590/sup 0/C (1100/sup 0/F), (2) high-temperature alloys can perform well at approximately 870/sup 0/C (1600/sup 0/F), and (3) they also may fail miserably at approximately 870/sup 0/C (1600/sup 0/F). Additional studies are clearly needed to develop a fundamental understanding of corrosion mechanisms in AFBC and to determine the envelope of safe operating conditions, which will depend upon alloy sensitivity, the oxygen and sulfur activities, and the many parameters that affect mixing and homogeneity within an operating AFBC. Ultimately long-term tests for periods to 20,000 h will be needed to assure the operability of in-bed heat exchanger and structural materials for the anticipated lifetime of a plant. Good design and well-controlled operations will yield good material performance in AFBC. The key to reliable material usage is operation within the safe envelope. Results from the present experiment suggest that this envelope is large for utility steam systems but smaller for high-temperature tubes and uncooled components in AFBC.

Godfrey, T G; Copper, R H; DeVan, J H; Drake, K R

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mercantile exchange cme" 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

Determination of Method Detection Limits for Trace 232-Thorium and 238-Uranium in Copper using Ion Exchange and ICPMS  

SciTech Connect

Determination of Method Detection Limits for Trace 232-Thorium and 238-Uranium in Copper using Ion Exchange and ICPMS

Hoppe, Eric W.; LaFerriere, Brian D.; Maiti, Tapas C.; Soin, Aleksandr

2014-04-15T23:59:59.000Z

482

Numerical Study on Crossflow Printed Circuit Heat Exchanger for Advanced Small Modular Reactors  

SciTech Connect

Various fluids such as water, gases (helium), molten salts (FLiNaK, FLiBe) and liquid metal (sodium) are used as a coolant of advanced small modular reactors (SMRs). The printed circuit heat exchanger (PCHE) has been adopted as the intermediate and/or secondary heat exchanger of SMR systems because this heat exchanger is compact and effective. The size and cost of PCHE can be changed by the coolant type of each SMR. In this study, the crossflow PCHE analysis code for advanced small modular reactor has been developed for the thermal design and cost estimation of the heat exchanger. The analytical solution of single pass, both unmixed fluids crossflow heat exchanger model was employed to calculate a two dimensional temperature profile of a crossflow PCHE. The analytical solution of crossflow heat exchanger was simply implemented by using built in function of the MATLAB program. The effect of fluid property uncertainty on the calculation results was evaluated. In addition, the effect of heat transfer correlations on the calculated temperature profile was analyzed by taking into account possible combinations of primary and secondary coolants in the SMR systems. Size and cost of heat exchanger were evaluated for the given temperature requirement of each SMR.

Su-Jong Yoon [Idaho National Laboratory (INL), Idaho Falls, ID (United States); Piyush Sabharwall [Idaho National Laboratory (INL), Idaho Falls, ID (United States); Eung-Soo Kim [Seoul National Univ., Seoul (Korea, Republic of)

2014-03-01T23:59:59.000Z

483

Assessment of commercially available ion exchange materials for cesium removal from highly alkaline wastes  

SciTech Connect

Approximately 61 million gallons of nuclear waste generated in plutonium production, radionuclide removal campaigns, and research and development activities is stored on the Department of Energy`s Hanford Site, near Richland, Washington. Although the pretreatment process and disposal requirements are still being defined, most pretreatment scenarios include removal of cesium from the aqueous streams. In many cases, after cesium is removed, the dissolved salt cakes and supernates can be disposed of as LLW. Ion exchange has been a leading candidate for this separation. Ion exchange systems have the advantage of simplicity of equipment and operation and provide many theoretical stages in a small space. The organic ion exchange material Duolite{trademark} CS-100 has been selected as the baseline exchanger for conceptual design of the Initial Pretreatment Module (IPM). Use of CS-100 was chosen because it is considered a conservative, technologically feasible approach. During FY 96, final resin down-selection will occur for IPM Title 1 design. Alternate ion exchange materials for cesium exchange will be considered at that time. The purpose of this report is to conduct a search for commercially available ion exchange materials which could potentially replace CS-100. This report will provide where possible a comparison of these resin in their ability to remove low concentrations of cesium from highly alkaline solutions. Materials which show promise can be studied further, while less encouraging resins can be eliminated from consideration.

Brooks, K.P.; Kim, A.Y.; Kurath, D.E.

1996-04-01T23:59:59.000Z

484

Exchange interaction between the triplet exciton and the localized spin in copper-phthalocyanine  

E-Print Network (OSTI)

Triplet excitonic state in the organic molecule may arise from a singlet excitation and the following inter-system crossing. Especially for a spin-bearing molecule, an exchange interaction between the triplet exciton and the original spin on the molecule can be expected. In this paper, such exchange interaction in copper-phthalocyanine (CuPc, spin-$\\frac{1}{2}$) was investigated from first-principles by using density-functional theory within a variety of approximations to the exchange correlation, ranging from local-density approximation to long-range corrected hybrid-exchange functional. The magnitude of the computed exchange interaction is in the order of meV with the minimum value (1.5 meV, ferromagnetic) given by the long-range corrected hybrid-exchange functional CAM-B3LYP. This exchange interaction can therefore give rise to a spin coherence with an oscillation period in the order of picoseconds, which is much shorter than the triplet lifetime in CuPc (typically tens of nanoseconds). This implies that it might be possible to manipulate the localised spin on Cu experimentally using optical excitation and inter-system crossing well before the triplet state disappears.

Wei Wu

2014-06-11T23:59:59.000Z

485

Kitchen Appliance Upgrades Improve Water Efficiency at DOD Exchange Facilities: Best Management Practice Case Study #11: Commercial Kitchen Equipment (Brochure)  

SciTech Connect

The Exchange, formerly the Army and Air Force Exchange Service (AAFES), is a joint military activity and the U.S. Department of Defense?s (DOD) oldest and largest retailer. The Exchange is taking a leadership role in water efficiency improvements in their commercial kitchens by integrating water efficiency concepts into the organization?s overall sustainability plan and objectives.

Not Available

2011-09-01T23:59:59.000Z

486

Measurements of air-sea gas exchange at high wind speeds in the Southern Ocean: Implications for global parameterizations  

E-Print Network (OSTI)

August 2006. [1] The SOLAS Air-Sea Gas Exchange (SAGE) Experiment was conducted in the western Pacific of air-sea gas exchange. Globally, the dominant control of air-sea gas exchange is turbulent energy as the primary source of energy for the atmospheric and oceanic molecular boundary layers have been derived from

Ho, David

487

Influence of energy exchange of electrons and ions on the long-wavelength thermal instability in magnetized astrophysical objects  

Science Journals Connector (OSTI)

......research-article Papers Influence of energy exchange of electrons and ions...are different and include the energy exchange in thermal equations...Vazquez-Semadeni Gazol 2002; Audit Hennebelle 2005; Stiele, Lesch...does not take into account an energy exchange between species in......

Anatoly K. Nekrasov

2012-01-01T23:59:59.000Z

488

Chem 115Lithium-Halogen ExchangeMyers RLi + R'X RX + R'Li  

E-Print Network (OSTI)

Chem 115Lithium-Halogen ExchangeMyers RLi + R'X RX + R'Li Lithium-halogen exchange reactions are essentially inert. 2 t-BuLi t-BuI + RLi t-BuLi isobutene + isobutane + LiI Lithium-halogen exchange reactions, and lithium iodide. H OEtBr H H OEtLi H1.1 eq n-BuLi Et2O, !80 °C Lau, K. S.; Schlosser, M. J. Org. Chem. 1978

489

Multiple pollutant removal using the condensing heat exchanger. Task 3, Long term testing at the ECTC  

SciTech Connect

The objective of this task is to demonstrate long term operation of a condensing heat exchanger for coal-fired conditions. A small condensing heat exchanger will be installed at the Environmental Control Technology Center in Barker, New York. It will be installed downstream of the flue gas particulate removal system. The test will determine the amount of wear, if any, on the Teflon{trademark} covered internals of the heat exchanger. Visual inspection and measurements will be obtained for the Teflon{trademark} covered tubes during the test. The material wear study will conducted over a one year calendar period, and the CHX equipment will be operated to the fullest extent allowable.

Schulze, K.H.

1996-01-01T23:59:59.000Z

490

Anisotropic exchange coupling in diluted magnetic semiconductors: Ab initio spin-density functional theory  

Science Journals Connector (OSTI)

A different scheme to calculate the exchange tensor J?ij describing in a phenomenological way the anisotropic exchange coupling of two moments in a magnetically ordered system is presented. The ab initio approach is based on spin-polarized relativistic multiple-scattering theory within the framework of spin-density functional theory. The scheme is applied to ferromagnetic CrTe as well as the diluted magnetic semiconductor system Ga1?xMnxAs. In the latter case the results show that there is a noticeable anisotropy in the exchange coupling present, although not as pronounced as those suggested in recent theoretical investigations.

H. Ebert and S. Mankovsky

2009-01-26T23:59:59.000Z

491

Heat exchanger design considerations for high temperature gas-cooled reactor (HTGR) plants  

SciTech Connect

Various aspects of the high-temperature heat exchanger conceptual designs for the gas turbine (HTGR-GT) and process heat (HTGR-PH) plants are discussed. Topics include technology background, heat exchanger types, surface geometry, thermal sizing, performance, material selection, mechanical design, fabrication, and the systems-related impact of installation and integration of the units in the prestressed concrete reactor vessel. The impact of future technology developments, such as the utilization of nonmetallic materials and advanced heat exchanger surface geometries and methods of construction, is also discussed.

McDonald, C.F.; Vrable, D.L.; Van Hagan, T.H.; King, J.H.; Spring, A.H.

1980-02-01T23:59:59.000Z

492

Derivation of equations describing a heat exchanger reactor and their solution using a computer  

E-Print Network (OSTI)

DERIVATION OF EQUATIONS DESCRIBING A HEAT EXCHANGER REACTOR AND THEIR SOLUTION USING A COMPUTER A Thesis By William Smith McLaughlin, Jr. i January 1956 DERIVATION OF EQUATIONS DESCRIBING A HEAT EXCHANGER REACTOR AND THEIR SOIUTION USING...]ect: Chemical Engineering DERIVATION OF EQUATIONS DESCRIBING A HEAT EXCHANGER REACTOR AND THEIR SOLUTION USING A COMPUTER A Thesis William Smith McLaughlin, Jr. Approved as to style and content by ha xnan o omm ee L)BRARY j A AA COLLEGE OF TEXAS...

McLaughlin, William Smith

2012-06-07T23:59:59.000Z

493

Quantifying exchange coupling in f-ion pairs using the diamagnetic substitution method  

SciTech Connect

One of the challenges in the chemistry of actinide and lanthanide (f-ion) is quantifying exchange coupling between f-ions. While qualitative information about exchange coupling may be readily obtained using the diamagnetic substitution approach, obtaining quantitative information is much more difficult. This article describes how exchange coupling may be quantified using the susceptibility of a magnetically isolated analog, as in the diamagnetic substitution approach, along with the anisotropy of the ground state as determined by EPR spectroscopy. Several examples are used to illustrate and test this approach.

Lukens, Wayne W.; Walter, Marc D.

2010-04-01T23:59:59.000Z

494

Origin and control of magnetic exchange coupling in between focused electron beam deposited cobalt nanostructures  

SciTech Connect

We demonstrate the existence and control of inter-particle magnetic exchange coupling in densely packed nanostructures fabricated by focused electron beam induced deposition. With Xe beam post-processing, we have achieved the controlled reduction and eventual elimination of the parasitic halo-like cobalt deposits formed in the proximity of intended nanostructures, which are the identified source of the magnetic exchange coupling. The elimination of the halo-mediated exchange coupling is demonstrated by magnetic measurements using Kerr microscopy on Co pillar arrays. Electron microscopy studies allowed us to identify the mechanisms underlying this process and to verify the efficiency and opportunities of the described nano-scale fabrication approach.

Nikulina, E.; Idigoras, O.; Porro, J. M.; Berger, A. [CIC nanoGUNE Consolider, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian (Spain)] [CIC nanoGUNE Consolider, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian (Spain); Vavassori, P.; Chuvilin, A. [CIC nanoGUNE Consolider, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian (Spain) [CIC nanoGUNE Consolider, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian (Spain); Ikerbasque, Basque Foundation for Science, Alameda Urquijo 36-5, 48011 Bilbao (Spain)

2013-09-16T23:59:59.000Z

495

Knowledge Exchange records from 01/04/2013 08/07/2013 CATEGORY 15 -Media: includes webinars, podcasts, DVDs, videos, press  

E-Print Network (OSTI)

Knowledge Exchange records from 01/04/2013 ­ 08/07/2013 CATEGORY 15 - Media: includes webinars Main subject: SUSTAINABLE MANAGEMENT Subjects: KNOWLEDGE EXCHANGE EVENTS; SUSTAINABLE MANAGEMENT

496

DIRECT CONTACT HEAT EXCHANGER 10 kW POWER LOOP. SECTION 1: EXECUTIVE SUMMARY. SECTION 2: TEST SERIES NO. 1. SECTION 3; TEST SERIES NO. 2  

E-Print Network (OSTI)

Heat Exchangers to Geothermal Power Production Cycles",Heat Exchanger to Geothermal Power Production Cycles",4057702. o m SUMMARY The geothermal power loop was modified

Engineering, Barber-Nicholas

2011-01-01T23:59:59.000Z

497

DEVELOPMENT OF NOVEL ELECTROCATALYSTS FOR PROTON EXCHANGE MEMBRANE FUEL CELLS  

SciTech Connect

Proton Exchange Membrane Fuel Cell (PEMFC) is one of the most promising power sources for space and electric vehicle applications. Platinum (Pt) catalyst is used for both fuel and air electrodes in PEMFCs. The carbon monoxide (CO) contamination of H{sub 2} greatly affects electrocatalysts used at the anode of PEMFCs and decrease the cell performance. This irreversible poisoning of the anode can happen even in CO concentrations as low as few ppm, and therefore, require expensive scrubbing of the H{sub 2}-fuel to reduce the contaminant concentration to acceptable level. In order to commercialize this environmentally sound source of energy/power system, development of suitable CO-tolerant catalyst is needed. In this work, we have synthesized several novel electrocatalysts (Pt/C, Pt/Ru/C Pt/Mo/C, Pt/Ir and Pt/Ru/Mo) for PEMFCs. These catalysts have been tested for CO tolerance in the H{sub 2}/air fuel cell. The concentration of CO in the H{sub 2} fuel varied from 10 ppm to 100 ppm. The performance of the electrodes was evaluated by determining the cell potential against current density. The effect of temperature, catalyst compositions, and electrode film preparation methods on the performance of PEM fuel cell has also been studied. It was found that at 70 C and 3.5 atm pressure at the cathode, Pt-alloy catalysts (10 wt % Pt/Ru/C, 20 wt % Pt/Mo/C) were more CO-tolerant than 20 wt % Pt catalyst alone. It was also observed that spraying method is better for the preparation of electrode film than the brushing technique. Some of these results are summarized in this report.

Shamsuddin Ilias

2001-07-06T23:59:59.000Z

498

Removal of Pu238 from Neptunium Solution by Anion Exchange  

SciTech Connect

A new anion flowsheet for use in HB-Line was tested in the lab with Reillex{trademark} HPQ for removal of Pu{sup 238} contamination from Np. Significant rejection of Pu{sup 238} was observed by washing with 6 to 12 bed volumes (BV) of reductive wash containing reduced nitric acid concentration along with both ferrous sulfamate (FS) and hydrazine. A shortened-height column was utilized in these tests to match changes in the plant equipment. Lab experiments scaled to plant batch sizes of 1500 to 2200 g Np were observed with modest losses for up-flow washing. Down-flow washing was observed to have high losses. The following are recommended conditions for removing Pu{sup 238} from Np solutions by anion exchange in HB-Line: (1) Feed conditions: Up-flow 6.4-8 M HNO{sub 3}, 0.02 M hydrazine, 0.05 M excess FS, less than 5 days storage of solution after FS addition. (2) Reductive Wash conditions: Up-flow 6-12 BV of 6.4 M HNO{sub 3}, 0.05 M FS, 0.05 M hydrazine. 1.8 mL/min/cm{sup 2} flowrate. (3) Decontamination Wash conditions: Up-flow 1-2 BV of 6.4-8 M HNO{sub 3}, no FS, no hydrazine. (4) Elution conditions: Down-flow 0.17 M HNO{sub 3}, 0.05 M hydrazine, no FS.

KYSER, EDWARD

2003-12-01T23:59:59.000Z

499

Quality Assurance Exchange August 2011, Volume 7 Issue 2 | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Quality Assurance Exchange August 2011, Volume 7 Issue 2 Quality Assurance Exchange August 2011, Volume 7 Issue 2 Quality Assurance Exchange August 2011, Volume 7 Issue 2 Quality Assurance Order Revised As part of the Department of Energy's (DOE's) Office of Health, Safety and Security (HSS) Directives reform initiative, DOE issued a revision to DOE Order (O) 414.1C,Quality Assurance on April 25, 2011. The DOE Quality Council, DOE Departmental Elements, Site Offices, and contractors participated in the review and update ofthe Order. DOE O 414.1D does not impose any new requirements, however, its content was streamlined; existing requirements and responsibilities were clarified; andthe sections were reorganized to reduce redundancy. Quality Assurance Exchange August 2011 Vol 7 Issue 2 More Documents & Publications

500

Quality Assurance Exchange August 2007, Volume 3 Issue 2 | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

August 2007, Volume 3 Issue 2 August 2007, Volume 3 Issue 2 Quality Assurance Exchange August 2007, Volume 3 Issue 2 Quality Assurance Exchange August 2007, Volume 3 Issue 2 U.S. Department of Energy Office of Corporate Safety Analysis EM INITIATES QA EVALUATION PLAN In response to Secretary Bodman's memorandum "Improving Quality Assurance" (April 2006), and in an effort to improve quality assurance issues within line item construction and operational projects, the Office of Environmental Management (EM) has developed a QA Initiative Evaluation Plan. Quality Assurance Exchange August 2007, Volume 3 Issue 2 More Documents & Publications QUALITY ASSURANCE EXCHANGE December 2005 Volume 1 Issue 3 DOE G 414.1-4, Safety Software Guide for Use with 10 CFR 830 Subpart A, Quality Assurance Requirements, and DOE O 414.1C, Quality Assurance