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Note: This page contains sample records for the topic "high performance cold" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

DEVELOPMENT OF A HIGH PERFORMANCE COLD CLIMATE HEAT PUMP  

SciTech Connect (OSTI)

The primary goals of the proposed project were to develop, test, and evaluate a high performance and cost-effective vapor compression air-source heat pump for use in cold climate regions. Vapor compression heat pumps are a proven technology, and have been used for many years to meet heating requirements for buildings in residential, commercial, and industrial applications. However, in climate regions that experience very low outdoor ambient temperatures both the heating capacity and coefficient of performance (COP) of traditional air-source vapor compression heat pumps drops dramatically with a decrease in the outdoor air temperature. The efficiency of heat pumping equipment has improved substantially over the past 20 years; however, the efficiencies of the highest rated equipment on the market are approaching practical limits that cannot be surpassed without modifications to the basic cycle and possibly the use of additional hardware. In this report, three technologies to improve the efficiency of vapor compression systems are described. These are a) vapor injected compression, b) oil flooded compression and c) hybrid flow control of the evaporator. Compressor prototypes for both, oil flooded and vapor injected compression were developed by Emerson Climate Technologies. For the oil flooded compressor, the oil injection port location was optimized and an internal oil separator was added using several design iterations. After initial testing at Emerson Climate Technologies, further testing was done at Purdue University, and compressor models were developed. These models were then integrated into a system model to determine the achievable improvement of seasonal energy efficiency (SEER) for Minneapolis (Minnesota) climate. For the oil flooded compression, a 34% improvement in seasonal energy efficiency was found while a 21% improvement in seasonal energy efficiency ratio was found for the vapor injected compression. It was found that one benefit of both tested compression technologies is a lower discharge temperature, which allows for continued operation at lower ambient temperatures. A bin analysis of the vapor injected prototype cold climate heat pump predicts a 6% improvement in HSPF for Minneapolis. This improvement is mainly a result of the increased capacity of the system for active vapor injection. For the oil flooded system, a slightly larger performance improvement is predicted, in this case mostly caused by an increase in heating COP. Based on an economic analysis of these results, the maximum additional cost of the system changes, for the Minneapolis location, are $430 for the vapor injected system and $391 for the oil flooded system. These estimates assume that a 3-year simple payback period is accepted by the customer. For the hybrid flow control of evaporators, a new type of balancing valve was developed together with Emerson Climate technologies to reduce the cost of the control scheme. In contrast to conventional stepper motor valves, this valve requires less cables and can be driven by a cheaper output circuit on the control board. The correct valve size was determined in a dedicated test stand in several design iterations. The performance benefits of the hybrid control of the evaporator coil were determined for clean coil conditions as well as with partial blockage of the air inlet grille and under frosting conditions. For clean coil conditions, the benefits in terms of COP and capacity are negligible. However, significant benefits were noted for severely air-maldistributed operating conditions. For the H2-test, the maximum COP improvement of 17% along with a capacity improvement of nearly 40% was observed. Overall, the hybrid control scheme leads to a significant amount of performance improvement, if the air inlet conditions to the evaporator are maldistributed.

Horton, W. Travis [Purdue University] [Purdue University; Groll, Eckhard A. [Purdue University] [Purdue University; Braun, James E. [Purdue University] [Purdue University

2014-06-01T23:59:59.000Z

2

Performance House -- A Cold Climate Challenge Home  

SciTech Connect (OSTI)

Working with builder partners on a test homes allows for vetting of whole-house building strategies to eliminate any potential unintended consequences prior to implementing these solution packages on a production scale. To support this research, CARB partnered with Preferred Builders Inc. on a high-performance test home in Old Greenwich, CT. The philosophy and science behind the 2,700 ft2 'Performance House' was based on the premise that homes should be safe, healthy, comfortable, durable, efficient, and adapt with the homeowners. The technologies and strategies used in the 'Performance House' were not cutting-edge, but simply 'best practices practiced'. The focus was on simplicity in construction, maintenance, and operation. When seeking a 30% source energy savings targets over a comparable 2009 IECC code-built home in the cold climate zone, nearly all components of a home must be optimized. Careful planning and design are critical. To help builders and architects seeking to match the performance of this home, a step-by-step guide through the building shell components of DOE's Challenge Home are provided in a pictorial story book. The end result was a DOE Challenge Home that achieved a HERS Index Score of 20 (43 without PV, the minimum target was 55 for compliance). This home was also awarded the 2012 HOBI for Best Green Energy Efficient Home from the Home Builders & Remodelers Association of Connecticut.

Puttagunta, S.; Grab, J.; Williamson, J.

2013-08-01T23:59:59.000Z

3

High Flux Isotope Reactor cold neutron source reference design concept  

SciTech Connect (OSTI)

In February 1995, Oak Ridge National Laboratory`s (ORNL`s) deputy director formed a group to examine the need for upgrades to the High Flux Isotope Reactor (HFIR) system in light of the cancellation of the Advanced neutron Source Project. One of the major findings of this study was that there was an immediate need for the installation of a cold neutron source facility in the HFIR complex. In May 1995, a team was formed to examine the feasibility of retrofitting a liquid hydrogen (LH{sub 2}) cold source facility into an existing HFIR beam tube. The results of this feasibility study indicated that the most practical location for such a cold source was the HB-4 beam tube. This location provides a potential flux environment higher than the Institut Laue-Langevin (ILL) vertical cold source and maximizes the space available for a future cold neutron guide hall expansion. It was determined that this cold neutron beam would be comparable, in cold neutron brightness, to the best facilities in the world, and a decision was made to complete a preconceptual design study with the intention of proceeding with an activity to install a working LH{sub 2} cold source in the HFIR HB-4 beam tube. During the development of the reference design the liquid hydrogen concept was changed to a supercritical hydrogen system for a number of reasons. This report documents the reference supercritical hydrogen design and its performance. The cold source project has been divided into four phases: (1) preconceptual, (2) conceptual design and testing, (3) detailed design and procurement, and (4) installation and operation. This report marks the conclusion of the conceptual design phase and establishes the baseline reference concept.

Selby, D.L.; Lucas, A.T.; Hyman, C.R. [and others

1998-05-01T23:59:59.000Z

4

Cold-Start Performance and Emissions Behavior of Alcohol Fuels...  

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

Emissions Behavior of Alcohol Fuels in an SIDI Engine Using Transient Hardware-In-Loop Test Meth Cold-Start Performance and Emissions Behavior of Alcohol Fuels in an SIDI Engine...

5

High Efficiency Cold Climate Heat Pump  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground Hawaii CleanHeatinHigh Efficiency Cold Climate

6

Porous Pavement in Cold Climates Part: Performance and Cost  

E-Print Network [OSTI]

90 80 70 60 50 40 30 20 10 0 %RemovalEfficiency Porous Asphalt Pervious Concrete Retention Pond ` #12;17 Hydrrologic Performance of Porous Pavements Pervious Concrete (HSG-B)Porous Asphalt (HSG-C) #12;0 10 20 30 40Porous Pavement in Cold Climates Part: Performance and Cost Onondaga Environmental Institute 17

7

High flux isotope reactor cold source preconceptual design study report  

SciTech Connect (OSTI)

In February 1995, the deputy director of Oak Ridge National Laboratory (ORNL) formed a group to examine the need for upgrades to the High Flux Isotope Reactor (HFIR) system in light of the cancellation of the Advanced Neutron Source Project. One of the major findings of this study was that there was an immediate need for the installation of a cold neutron source facility in the HFIR complex. The anticipated cold source will consist of a cryogenic LH{sub 2} moderator plug, a cryogenic pump system, a refrigerator that uses helium gas as a refrigerant, a heat exchanger to interface the refrigerant with the hydrogen loop, liquid hydrogen transfer lines, a gas handling system that includes vacuum lines, and an instrumentation and control system to provide constant system status monitoring and to maintain system stability. The scope of this project includes the development, design, safety analysis, procurement/fabrication, testing, and installation of all of the components necessary to produce a working cold source within an existing HFIR beam tube. This project will also include those activities necessary to transport the cold neutron beam to the front face of the present HFIR beam room. The cold source project has been divided into four phases: (1) preconceptual, (2) conceptual design and research and development (R and D), (3) detailed design and procurement, and (4) installation and operation. This report marks the conclusion of the preconceptual phase and establishes the concept feasibility. The information presented includes the project scope, the preliminary design requirements, the preliminary cost and schedule, the preliminary performance data, and an outline of the various plans for completing the project.

Selby, D.L.; Bucholz, J.A.; Burnette, S.E. [and others

1995-12-01T23:59:59.000Z

8

High Performance Computing  

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

High Performance Computing High Performance Computing Providing world-class high performance computing capability that enables unsurpassed solutions to complex problems of...

9

High Performance Computing in  

E-Print Network [OSTI]

High Performance Computing in Bioinformatics Thomas Ludwig (t.ludwig@computer.org) Ruprecht PART I: High Performance Computing Thomas Ludwig PART II: HPC Computing in Bioinformatics Alexandros #12;© Thomas Ludwig, Alexandros Stamatakis, GCB'04 3 PART I High Performance Computing Introduction

Stamatakis, Alexandros

10

Commissioning for High Performance  

E-Print Network [OSTI]

, including energy efficiency, durability, life-cycle performance, and occupant productivity” • ASHRAE Guideline 32 - Sustainable High-Performance Operations and Maintenance A high-performance building “consistently delivers a highly productive environment... plumbing fixtures • Renewable energy sources such as photovoltaic (PV) systems • Building envelope: Design reviews and field testing • Indoor Air Quality (IAQ): Ventilation that meets or exceeds ASHRAE 62.1 • Natural lighting & light pollution • System...

Meline, K.

2013-01-01T23:59:59.000Z

11

.NET High Performance Computing.  

E-Print Network [OSTI]

?? Graphics Processing Units (GPUs) have been extensively applied in the High Performance Computing (HPC) community. HPC applications require additional special programming environments to improve… (more)

Ou, Hsuan-Hsiu

2012-01-01T23:59:59.000Z

12

High Performance New Construction  

E-Print Network [OSTI]

Funding for Efficient New Buildings through Integrated Project Delivery and High Performance Design-Build Case Study Rolling Plains New Medical Office Building Michael Flores McKinstry mflores@mckinstry.com 469-789-9920 1 ESL-KT-13-12-40 CATEE..., San Antonio, Texas Dec. 16-18 Objectives • Explain how High Performance Design Build / Integrated Project Delivery (HPDB/IPD) differs from alternative project delivery methods (and why it is usually better!) • Identify the key participants in High...

Flores, M.

2013-01-01T23:59:59.000Z

13

High performance systems  

SciTech Connect (OSTI)

This document provides a written compilation of the presentations and viewgraphs from the 1994 Conference on High Speed Computing given at the High Speed Computing Conference, {open_quotes}High Performance Systems,{close_quotes} held at Gleneden Beach, Oregon, on April 18 through 21, 1994.

Vigil, M.B. [comp.

1995-03-01T23:59:59.000Z

14

High Performance Computing  

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

view objects and processes in 3D. 13:01 Gary Grider, HPC Divison Leader The High Performance Computing (HPC) Division supports the Laboratory mission by managing world-class...

15

High Performance Sustainable Building  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Guide provides approaches for implementing the High Performance Sustainable Building (HPSB) requirements of DOE Order 413.3B, Program and Project Management for the Acquisition of Capital Assets. Cancels DOE G 413.3-6.

2011-11-09T23:59:59.000Z

16

Thermoelectrics Partnership: High Performance Thermoelectric...  

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

High Performance Thermoelectric Waste Heat Recovery System Based on Zintl Phase Materials with Embedded Nanoparticles Thermoelectrics Partnership: High Performance Thermoelectric...

17

High performance polymeric foams  

SciTech Connect (OSTI)

The aim of this work was to investigate the foamability of high-performance polymers (polyethersulfone, polyphenylsulfone, polyetherimide and polyethylenenaphtalate). Two different methods have been used to prepare the foam samples: high temperature expansion and two-stage batch process. The effects of processing parameters (saturation time and pressure, foaming temperature) on the densities and microcellular structures of these foams were analyzed by using scanning electron microscopy.

Gargiulo, M.; Sorrentino, L. [Institute for Composite and Biomedical Materials (IMCB)-CNR, P.le Tecchio 80, 80125 Naples (Italy); Iannace, S. [Institute for Composite and Biomedical Materials (IMCB)-CNR, P.le Tecchio 80, 80125 Naples (Italy) and Technological District on Polymeric and Composite Materials Engineering and Structures (IMAST), P.le E.Fermi 1, location Porto del Granatello, 80055 Portici (Naples)

2008-08-28T23:59:59.000Z

18

High Performance Sustainable Building  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The guide supports DOE O 413.3A and provides useful information on the incorporation of high performance sustainable building principles into building-related General Plant Projects and Institutional General Plant Projects at DOE sites. Canceled by DOE G 413.3-6A. Does not cancel other directives.

2008-06-20T23:59:59.000Z

19

High Performance Window Retrofit  

SciTech Connect (OSTI)

The US Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) and Traco partnered to develop high-performance windows for commercial building that are cost-effective. The main performance requirement for these windows was that they needed to have an R-value of at least 5 ft2 F h/Btu. This project seeks to quantify the potential energy savings from installing these windows in commercial buildings that are at least 20 years old. To this end, we are conducting evaluations at a two-story test facility that is representative of a commercial building from the 1980s, and are gathering measurements on the performance of its windows before and after double-pane, clear-glazed units are upgraded with R5 windows. Additionally, we will use these data to calibrate EnergyPlus models that we will allow us to extrapolate results to other climates. Findings from this project will provide empirical data on the benefits from high-performance windows, which will help promote their adoption in new and existing commercial buildings. This report describes the experimental setup, and includes some of the field and simulation results.

Shrestha, Som S [ORNL; Hun, Diana E [ORNL; Desjarlais, Andre Omer [ORNL

2013-12-01T23:59:59.000Z

20

High Performance Computing School COMSC  

E-Print Network [OSTI]

High Performance Computing School COMSC This module aims to provide the students with fundamental knowledge and understanding of techniques associated with High Performance Computing and its practical' skills in analysing and evaluating High Performance Computing and will be structured around

Martin, Ralph R.

Note: This page contains sample records for the topic "high performance cold" 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

High Performance Buildings Database  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

The High Performance Buildings Database is a shared resource for the building industry, a unique central repository of in-depth information and data on high-performance, green building projects across the United States and abroad. The database includes information on the energy use, environmental performance, design process, finances, and other aspects of each project. Members of the design and construction teams are listed, as are sources for additional information. In total, up to twelve screens of detailed information are provided for each project profile. Projects range in size from small single-family homes or tenant fit-outs within buildings to large commercial and institutional buildings and even entire campuses. The database is a data repository as well. A series of Web-based data-entry templates allows anyone to enter information about a building project into the database. Once a project has been submitted, each of the partner organizations can review the entry and choose whether or not to publish that particular project on its own Web site.

22

HIGH PERFORMANCE COMPUTING  

E-Print Network [OSTI]

This paper presents recent developments of high performance computing and networking techniques in the field of computer-aided multibody analysis and design. The authors describe the main achievements obtained in the development of a tool to aid in the design of new industrial mechanical systems by performing parallel parametric multibody simulations. The parallel software is composed of four main modules: two user-friendly interfaces to input the data and visualize the results, a simulation module, and a parallel manager module that is the main focus of this paper. The authors show that the implementation, using PVM, of simple and well-known ideas leads to efficient and flexible parallel software targeted for heterogeneous networks of nondedicated workstations, which is the parallel platform available in most mechanical design departments.

Ra Baldini; Luc Giraud; Javier G. Izaguirre; Jose M. Jimenez; Luis M. Matey; Sandra Baldini; Luc Giraud; Javier G. Izaguirre; Jose M. Jimenez; Luis M. Matey

23

High Performance Quantum Computing  

E-Print Network [OSTI]

The architecture scalability afforded by recent proposals of a large scale photonic based quantum computer, utilizing the theoretical developments of topological cluster states and the photonic chip, allows us to move on to a discussion of massively scaled Quantum Information Processing (QIP). In this letter we introduce the model for a secure and unsecured topological cluster mainframe. We consider the quantum analogue of High Performance Computing, where a dedicated server farm is utilized by many users to run algorithms and share quantum data. The scaling structure of photonics based topological cluster computing leads to an attractive future for server based QIP, where dedicated mainframes can be constructed and/or expanded to serve an increasingly hungry user base with the ideal resource for individual quantum information processing.

Simon J. Devitt; William J. Munro; Kae Nemoto

2008-10-14T23:59:59.000Z

24

High Performance Network Monitoring  

SciTech Connect (OSTI)

Network Monitoring requires a substantial use of data and error analysis to overcome issues with clusters. Zenoss and Splunk help to monitor system log messages that are reporting issues about the clusters to monitoring services. Infiniband infrastructure on a number of clusters upgraded to ibmon2. ibmon2 requires different filters to report errors to system administrators. Focus for this summer is to: (1) Implement ibmon2 filters on monitoring boxes to report system errors to system administrators using Zenoss and Splunk; (2) Modify and improve scripts for monitoring and administrative usage; (3) Learn more about networks including services and maintenance for high performance computing systems; and (4) Gain a life experience working with professionals under real world situations. Filters were created to account for clusters running ibmon2 v1.0.0-1 10 Filters currently implemented for ibmon2 using Python. Filters look for threshold of port counters. Over certain counts, filters report errors to on-call system administrators and modifies grid to show local host with issue.

Martinez, Jesse E [Los Alamos National Laboratory

2012-08-10T23:59:59.000Z

25

Performance House: A Cold Climate Challenge Home, Old Greenwich, Connecticut (Fact Sheet)  

SciTech Connect (OSTI)

By working with builder partners on test homes, researchers from the U.S. Department of Energy's Building America program can vet whole-house building strategies and avoid potential unintended consequences of implementing untested solution packages on a production scale. To support this research, Building America team Consortium for Advanced Residential Buildings (CARB) partnered with Preferred Builders Inc. on a high-performance test home in Old Greenwich, Connecticut. The philosophy and science behind the 2,700 ft2 "Performance House" was based on the premise that homes should be safe, healthy, comfortable, durable, efficient, and adaptable to the needs of homeowners. The technologies and strategies used in the "Performance House" were best practices rather than cutting edge, with a focus on simplicity in construction, maintenance, and operation. Achieving 30% source energy savings compared with a home built to the 2009 International Energy Conservation Code in the cold climate zone requires that nearly all components and systems be optimized. Careful planning and design are critical. The end result was a DOE Challenge Home that achieved a Home Energy Rating System (HERS) Index Score of 20 (43 without photovoltaics [PV]).

Not Available

2013-11-01T23:59:59.000Z

26

Performance evaluation approach for the supercritical helium cold circulators of ITER  

SciTech Connect (OSTI)

The ITER project design foresees Supercritical Helium (SHe) forced flow cooling for the main cryogenic components, namely, the superconducting (SC) magnets and cryopumps (CP). Therefore, cold circulators have been selected to provide the required SHe mass flow rate to cope with specific operating conditions and technical requirements. Considering the availability impacts of such machines, it has been decided to perform evaluation tests of the cold circulators at operating conditions prior to the series production in order to minimize the project technical risks. A proposal has been conceptualized, evaluated and simulated to perform representative tests of the full scale SHe cold circulators. The objectives of the performance tests include the validation of normal operating condition, transient and off-design operating modes as well as the efficiency measurement. A suitable process and instrumentation diagram of the test valve box (TVB) has been developed to implement the tests at the required thermodynamic conditions. The conceptual engineering design of the TVB has been developed along with the required thermal analysis for the normal operating conditions to support the performance evaluation of the SHe cold circulator.

Vaghela, H.; Sarkar, B.; Bhattacharya, R.; Kapoor, H. [ITER-India, Institute for Plasma Research, Near Indira Bridge, Bhat, Gandhinagar-382428 (India); Chalifour, M.; Chang, H.-S.; Serio, L. [ITER Organization, Route de Vinon sur Verdon - 13115 St Paul Lez Durance (France)

2014-01-29T23:59:59.000Z

27

High Performance Computing contributions to  

E-Print Network [OSTI]

High Performance Computing contributions to DoD Mission Success 2002 #12;Approved for public/C nanotube in a field emitter configuration #12;HIGH PERFORMANCE COMPUTING contributions tocontributions ­ SECTION 1 INTRODUCTION 1 Introduction 3 Overview of the High Performance Computing Modernization Program 3

28

New carbon cone nanotip for use in a highly coherent cold field emission electron microscope  

E-Print Network [OSTI]

1 New carbon cone nanotip for use in a highly coherent cold field emission electron Jeanne Marvig, BP 94347, TOULOUSE, Cedex 4, FRANCE Abstract A new cathode for cold-field emission gun using a pyrolytic carbon-cone supported onto a carbon nanotube as the electron emitting tip has been

Paris-Sud XI, Université de

29

Creating high performance enterprises  

E-Print Network [OSTI]

How do enterprises successfully conceive, design, deliver, and operate large-scale, engineered systems? These large-scale projects often involve high complexity, significant technical challenges, a large number of diverse ...

Stanke, Alexis K. (Alexis Kristen), 1977-

2006-01-01T23:59:59.000Z

30

High Performance Window Attachments  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground Hawaii CleanHeatinHighMetalEnergyMaterialsHigh

31

High Performance Home Cost Performance Trade-Offs: Production...  

Energy Savers [EERE]

High Performance Home Cost Performance Trade-Offs: Production Builders - Building America Top Innovation High Performance Home Cost Performance Trade-Offs: Production Builders -...

32

High-Performance Nanostructured Coating  

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

design utilizing a nanoparticle in dielectric matrix approach is used to achieve high optical performance. New refractory materials are used to either make or coat the...

33

High Performance Computing  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in the Madison SymmetricHigh Carbon|1-3, m

34

High Performance Sustainable Buildings  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in the Madison SymmetricHigh

35

The new cold neutron chopper spectrometer at the Spallation Neutron Source: Design and performance  

SciTech Connect (OSTI)

The design and performance of the new cold neutron chopper spectrometer (CNCS) at the Spallation Neutron Source in Oak Ridge are described. CNCS is a direct-geometry inelastic time-of-flight spectrometer, designed essentially to cover the same energy and momentum transfer ranges as IN5 at ILL, LET at ISIS, DCS at NIST, TOFTOF at FRM-II, AMATERAS at J-PARC, PHAROS at LANSCE, and NEAT at HZB, at similar energy resolution. Measured values of key figures such as neutron flux at sample position and energy resolution are compared between measurements and ray tracing Monte Carlo simulations, and good agreement (better than 20% of absolute numbers) has been achieved. The instrument performs very well in the cold and thermal neutron energy ranges, and promises to become a workhorse for the neutron scattering community for quasielastic and inelastic scattering experiments.

Ehlers, G.; Podlesnyak, A. A.; Niedziela, J. L.; Iverson, E. B. [Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Sokol, P. E. [Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)

2011-08-15T23:59:59.000Z

36

The new Cold Neutron Chopper Spectrometer at the Spallation Neutron Source -- Design and Performance  

SciTech Connect (OSTI)

The design and performance of the new cold neutron chopper spectrometer (CNCS) at the Spallation Neutron Source in Oak Ridge are described. CNCS is a direct-geometry inelastic time-of-flight spectrometer, designed essentially to cover the same energy and momentum transfer ranges as IN5 at ILL, LET at ISIS, DCS at NIST, TOFTOF at FRM-II, AMATERAS at J-PARC, PHAROS at LANSCE, and NEAT at HZB, at similar energy resolution. Measured values of key figures such as neutron flux at sample position and energy resolution are compared between measurements and ray tracing Monte Carlo simulations, and good agreement (better than 20% of absolute numbers) has been achieved. The instrument performs very well in the cold and thermal neutron energy ranges, and promises to become a workhorse for the neutron scattering community for quasielastic and inelastic scattering experiments.

Ehlers, Georg [ORNL; Podlesnyak, Andrey A [ORNL; Niedziela, Jennifer L [ORNL; Iverson, Erik B [ORNL; Sokol, Paul E [ORNL

2011-01-01T23:59:59.000Z

37

High Performance Networks for High Impact Science  

SciTech Connect (OSTI)

This workshop was the first major activity in developing a strategic plan for high-performance networking in the Office of Science. Held August 13 through 15, 2002, it brought together a selection of end users, especially representing the emerging, high-visibility initiatives, and network visionaries to identify opportunities and begin defining the path forward.

Scott, Mary A.; Bair, Raymond A.

2003-02-13T23:59:59.000Z

38

Computational biology and high performance computing  

E-Print Network [OSTI]

Biology and High Performance Computing Manfred Zorn, TeresaBiology and High Performance Computing Presenters: Manfred99-Portland High performance computing has become one of the

Shoichet, Brian

2011-01-01T23:59:59.000Z

39

High Performance Incentive Program (Kansas)  

Broader source: Energy.gov [DOE]

High Performance Incentive Program provides tax incentives to eligible employers that pay above-average wages and have a strong commitment to skills development for their workers. A substantial...

40

High Performance Outdoor Lighting Accelerator  

Broader source: Energy.gov [DOE]

Hosted by the U.S. Department of Energy (DOE)’s Weatherization and Intergovernmental Programs Office (WIPO), this webinar covered the expansion of the Better Buildings platform to include the newest initiative for the public sector: the High Performance Outdoor Lighting Accelerator (HPOLA).

Note: This page contains sample records for the topic "high performance cold" 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

High-Performance Nanostructured Coating  

Broader source: Energy.gov [DOE]

The High-Performance Nanostructured Coating fact sheet details a SunShot project led by a University of California, San Diego research team working to develop a new high-temperature spectrally selective coating for receiver surfaces. These receiver surfaces, used in concentrating solar power systems, rely on high-temperature SSCs to effectively absorb solar energy without emitting much blackbody radiation.The optical properties of the SSC directly determine the efficiency and maximum attainable temperature of solar receivers, which in turn influence the power-conversion efficiency and overall system cost.

42

High-Efficiency Commercial Cold Climate Heat Pump  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground Hawaii HIGH PERFORMANCEDOEDepartment ofEngines

43

High Efficiency, High Performance Clothes Dryer  

SciTech Connect (OSTI)

This program covered the development of two separate products; an electric heat pump clothes dryer and a modulating gas dryer. These development efforts were independent of one another and are presented in this report in two separate volumes. Volume 1 details the Heat Pump Dryer Development while Volume 2 details the Modulating Gas Dryer Development. In both product development efforts, the intent was to develop high efficiency, high performance designs that would be attractive to US consumers. Working with Whirlpool Corporation as our commercial partner, TIAX applied this approach of satisfying consumer needs throughout the Product Development Process for both dryer designs. Heat pump clothes dryers have been in existence for years, especially in Europe, but have not been able to penetrate the market. This has been especially true in the US market where no volume production heat pump dryers are available. The issue has typically been around two key areas: cost and performance. Cost is a given in that a heat pump clothes dryer has numerous additional components associated with it. While heat pump dryers have been able to achieve significant energy savings compared to standard electric resistance dryers (over 50% in some cases), designs to date have been hampered by excessively long dry times, a major market driver in the US. The development work done on the heat pump dryer over the course of this program led to a demonstration dryer that delivered the following performance characteristics: (1) 40-50% energy savings on large loads with 35 F lower fabric temperatures and similar dry times; (2) 10-30 F reduction in fabric temperature for delicate loads with up to 50% energy savings and 30-40% time savings; (3) Improved fabric temperature uniformity; and (4) Robust performance across a range of vent restrictions. For the gas dryer development, the concept developed was one of modulating the gas flow to the dryer throughout the dry cycle. Through heat modulation in a gas dryer, significant time and energy savings, combined with dramatically reduced fabric temperatures, was achieved in a cost-effective manner. The key design factor lay in developing a system that matches the heat input to the dryer with the fabrics ability to absorb it. The development work done on the modulating gas dryer over the course of this program led to a demonstration dryer that delivered the following performance characteristics: (1) Up to 25% reduction in energy consumption for small and medium loads; (2) Up to 35% time savings for large loads with 10-15% energy reduction and no adverse effect on cloth temperatures; (3) Reduced fabric temperatures, dry times and 18% energy reduction for delicate loads; and, (4) Robust performance across a range of vent restrictions.

Peter Pescatore; Phil Carbone

2005-03-31T23:59:59.000Z

44

Army High Performance Computing Research Center  

E-Print Network [OSTI]

Army High Performance Computing Research Center Applying advanced computational science research challenges http://me.stanford.edu/research/centers/ahpcrc #12;Army High Performance Computing challenges http://me.stanford.edu/research/centers/ahpcrc #12;Army High Performance Computing Research

Prinz, Friedrich B.

45

Building America Webinar: High Performance Space Conditioning...  

Energy Savers [EERE]

Webinar: High Performance Space Conditioning Systems, Part II - Compact Buried Ducts Building America Webinar: High Performance Space Conditioning Systems, Part II - Compact Buried...

46

High performance computing Igal G. Rasin  

E-Print Network [OSTI]

High performance computing Igal G. Rasin Department of Chemical Engineering, Technion Israel with different parallelization techniques and tools used in high performance computing (HPC). The tutorial

Adler, Joan

47

Building America Webinar: High Performance Enclosure Strategies...  

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

High Performance Enclosure Strategies: Part II, New Construction Building America Webinar: High Performance Enclosure Strategies: Part II, New Construction The webinar is the...

48

Guide for High-Performance Buildings Available  

SciTech Connect (OSTI)

This article is an overview of the new "Sustainable, High-Performance Operations and Maintenance" guidelines.

Bartlett, Rosemarie

2012-10-01T23:59:59.000Z

49

The High Performance Storage System  

SciTech Connect (OSTI)

The National Storage Laboratory (NSL) was organized to develop, demonstrate and commercialize technology for the storage system that will be the future repositories for our national information assets. Within the NSL four Department of Energy laboratories and IBM Federal System Company have pooled their resources to develop an entirely new High Performance Storage System (HPSS). The HPSS project concentrates on scalable parallel storage system for highly parallel computers as well as traditional supercomputers and workstation clusters. Concentrating on meeting the high end of storage system and data management requirements, HPSS is designed using network-connected storage devices to transfer data at rates of 100 million bytes per second and beyond. The resulting products will be portable to many vendor`s platforms. The three year project is targeted to be complete in 1995. This paper provides an overview of the requirements, design issues, and architecture of HPSS, as well as a description of the distributed, multi-organization industry and national laboratory HPSS project.

Coyne, R.A.; Hulen, H. [IBM Federal Systems Co., Houston, TX (United States); Watson, R. [Lawrence Livermore National Lab., CA (United States)

1993-09-01T23:59:59.000Z

50

Ground Source Heat Pump Sub-Slab Heat Exchange Loop Performance in a Cold Climate  

SciTech Connect (OSTI)

This report presents a cold-climate project that examines an alternative approach to ground source heat pump (GSHP) ground loop design. The innovative ground loop design is an attempt to reduce the installed cost of the ground loop heat exchange portion of the system by containing the entire ground loop within the excavated location beneath the basement slab. Prior to the installation and operation of the sub-slab heat exchanger, energy modeling using TRNSYS software and concurrent design efforts were performed to determine the size and orientation of the system. One key parameter in the design is the installation of the GSHP in a low-load home, which considerably reduces the needed capacity of the ground loop heat exchanger. This report analyzes data from two cooling seasons and one heating season. Upon completion of the monitoring phase, measurements revealed that the initial TRNSYS simulated horizontal sub-slab ground loop heat exchanger fluid temperatures and heat transfer rates differed from the measured values. To determine the cause of this discrepancy, an updated model was developed utilizing a new TRNSYS subroutine for simulating sub-slab heat exchangers. Measurements of fluid temperature, soil temperature, and heat transfer were used to validate the updated model.

Mittereder, N.; Poerschke, A.

2013-11-01T23:59:59.000Z

51

HIGH PERFORMANCE COMPUTING TODAY Jack Dongarra  

E-Print Network [OSTI]

1 HIGH PERFORMANCE COMPUTING TODAY Jack Dongarra Computer Science Department, University detailed and well-founded analysis of the state of high performance computing. This paper summarizes some of systems available for performing grid based computing. Keywords High performance computing, Parallel

Dongarra, Jack

52

Building America Webinar: High Performance Space Conditioning...  

Energy Savers [EERE]

Kohta Ueno, Building Science Corporation. Kohta will discuss BSC's research on ductless heat pumps versus mini-splits being used in high performance (high R value enclosurelow...

53

Building America Roadmap to High Performance Homes  

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

Technologies Office eere.energy.gov To Get to NZE Ready Homes... 1. High Efficiency - Thermal Enclosure ("Envelope") - Low-Load HVAC - Efficient Components 2. High Performance...

54

Building America Webinar: High Performance Space Conditioning...  

Energy Savers [EERE]

Strategies for Affordable Housing Building America Webinar: High Performance Space Conditioning Systems, Part II - Air Distribution Retrofit Strategies for Affordable...

55

Tutorial: High Performance Computing Igal G. Rasin  

E-Print Network [OSTI]

Tutorial: High Performance Computing Igal G. Rasin Department of Chemical Engineering Israel Computing 27 Nisan 5769 (21.04.2009) 1 / 18 #12;Motivation What is High Performance Computing? What for serial Computing? Igal G. Rasin (Technion) Tutorial: High Performance Computing 27 Nisan 5769 (21

Adler, Joan

56

College of Engineering High Performance Computing Cluster  

E-Print Network [OSTI]

College of Engineering High Performance Computing Cluster Policy and Procedures COE-HPC-01 and registered as requiring high performance computing; the course identification/registrations process the College High Performance Computing system will need register for system access by visiting http

Demirel, Melik C.

57

High performance fibers. Final report  

SciTech Connect (OSTI)

A two and a half year ONR/ARPA funded program to develop a low cost process for manufacture of a high strength/high modulus sigma/E boron nitride (BN) fiber was initiated on 7/1/90 and ended on 12/31/92. The preparation of high sigma/E BN fibers had been demonstrated in the late 1960's by the PI using a batch nitriding of B2O3 fiber with NH3 followed by stress graphitization at approx. 2000 deg C. Such fibers displayed values comparable to PAN based carbon fibers but the mechanicals were variable most likely because of redeposition of volatiles at 2000 deg C. In addition, the cost of the fibers was very high due to the need for many hours of nitriding necessary to convert the B2O3 fibers. The use of batch nitriding negated two possible cost advantages of this concept, namely, the ease of drawing very fine, multi-filament yarn of B2O3 and more importantly the very low cost of the starting materials.

Economy, J.

1994-01-01T23:59:59.000Z

58

423A HIGH-PERFORMANCE COMPUTING/NUMERICAL The International Journal of High Performance Computing Applications,  

E-Print Network [OSTI]

423A HIGH-PERFORMANCE COMPUTING/NUMERICAL The International Journal of High Performance Computing and barriers in the development of high-performance computing (HPC) algorithms and software. The activity has computing, numerical analy- sis, roadmap, applications and algorithms, software 1 The High-performance

Higham, Nicholas J.

59

[ HIGH PERFORMANCE BUILDING STANDARD] STATE OF MONTANA HIGH PERFORMANCE BUILDING STANDARDS  

E-Print Network [OSTI]

[ HIGH PERFORMANCE BUILDING STANDARD] PART 2 HPBS STATE OF MONTANA HIGH PERFORMANCE BUILDING. These High Performance Building Standards are promulgated to implement the directives established in SB 49 which amended Section 17-7-201, MCA. B. These High Performance Building Standards were adopted on June 1

Dyer, Bill

60

Cold vacuum drying proof of performance (first article testing) test results  

SciTech Connect (OSTI)

This report presents and details the test results of the first of a kind process referred to as Cold Vacuum Drying (CVD). The test results are compiled from several months of testing of the first process equipment skid and ancillary components to de-water and dry Multi-Canister Overpacks (MCO) filled with Spent Nuclear Fuel (SNF). The tests results provide design verifications, equipment validations, model validation data, and establish process parameters.

MCCRACKEN, K.J.

1999-06-23T23:59:59.000Z

Note: This page contains sample records for the topic "high performance cold" 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

AGILA: The Ateneo High Performance Computing System  

E-Print Network [OSTI]

A Beowulf cluster is a low-cost parallel high performance computing system that uses commodity hardware components such as personal computers and standard Ethernet adapters and switches and runs on freely available software such as Linux and LAM-MPI. In this paper the development of the AGILA HPCS, which stands for the Ateneo GigaflopsRange Performance, Linux OS, and Athlon Processors High Performance Computing System, is discussed including its hardware and software configurations and performance evaluation. Keywords High-performance computing, commodity cluster computing, parallel computing, Beowulf-class cluster 1.

Rafael Salda Na; Felix P. Muga Ii; Jerrold J. Garcia; William Emmanuel; S. Yu

2000-01-01T23:59:59.000Z

62

Summary Of Cold Crucible Vitrification Tests Results With Savannah River Site High Level Waste Surrogates  

SciTech Connect (OSTI)

The cold crucible inductive melting (CCIM) technology successfully applied for vitrification of low- and intermediate-level waste (LILW) at SIA Radon, Russia, was tested to be implemented for vitrification of high-level waste (HLW) stored at Savannah River Site, USA. Mixtures of Sludge Batch 2 (SB2) and 4 (SB4) waste surrogates and borosilicate frits as slurries were vitrified in bench- (236 mm inner diameter) and full-scale (418 mm inner diameter) cold crucibles. Various process conditions were tested and major process variables were determined. Melts were poured into 10L canisters and cooled to room temperature in air or in heat-insulated boxes by a regime similar to Canister Centerline Cooling (CCC) used at DWPF. The products with waste loading from ~40 to ~65 wt.% were investigated in details. The products contained 40 to 55 wt.% waste oxides were predominantly amorphous; at higher waste loadings (WL) spinel structure phases and nepheline were present. Normalized release values for Li, B, Na, and Si determined by PCT procedure remain lower than those from EA glass at waste loadings of up to 60 wt.%.

Stefanovsky, Sergey; Marra, James; Lebedev, Vladimir

2014-01-13T23:59:59.000Z

63

Building America Webinar: High Performance Space Conditioning...  

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

II - Design Options for Locating Ducts within Conditioned Space Building America Webinar: High Performance Space Conditioning Systems, Part II - Design Options for Locating Ducts...

64

High Performance Green Schools Planning Grants  

Broader source: Energy.gov [DOE]

The Governor's Green Government Council of Pennsylvania provides an incentive for new schools to be built according to green building standards. High Performance Green Schools Planning Grants are...

65

Computational biology and high performance computing  

E-Print Network [OSTI]

Paper in Computational Biology The First Step Beyond theM . Glaeser, Mol. & Cell Biology, UCB and Life SciencesLBNL-44460 Computational Biology and High Performance

Shoichet, Brian

2011-01-01T23:59:59.000Z

66

High performance carbon nanocomposites for ultracapacitors  

DOE Patents [OSTI]

The present invention relates to composite electrodes for electrochemical devices, particularly to carbon nanotube composite electrodes for high performance electrochemical devices, such as ultracapacitors.

Lu, Wen

2012-10-02T23:59:59.000Z

67

High-Performance Computing at Los  

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

and back to the loosened semantics of key value stores," says Gary Grider, High Performance Computing division leader at Los Alamos. - 2 - Computer simulations overall are...

68

Method of making a high performance ultracapacitor  

DOE Patents [OSTI]

A high performance double layer capacitor having an electric double layer formed in the interface between activated carbon and an electrolyte is disclosed. The high performance double layer capacitor includes a pair of aluminum impregnated carbon composite electrodes having an evenly distributed and continuous path of aluminum impregnated within an activated carbon fiber preform saturated with a high performance electrolytic solution. The high performance double layer capacitor is capable of delivering at least 5 Wh/kg of useful energy at power ratings of at least 600 W/kg.

Farahmandi, C. Joseph (Auburn, AL); Dispennette, John M. (Auburn, AL)

2000-07-26T23:59:59.000Z

69

Building America Webinar: High Performance Enclosure Strategies...  

Energy Savers [EERE]

Webinar: High Performance Enclosure Strategies: Part II, New Construction - August 13, 2014 - Cladding Attachment Over Thick Exterior Rigid Insulation Building America Webinar:...

70

TAP Webinar: High Performance Outdoor Lighting Accelerator  

Broader source: Energy.gov [DOE]

Hosted by the Technical Assistance Program (TAP), this webinar will cover the recently announced expansion of the Better Buildings platform —the High Performance Outdoor Lighting Accelerator (HPOLA).

71

DOE High Performance Computing Operational Review  

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

Forward Private Sector Partnerships MANTISSA Home R & D HPCOR DOE High Performance Computing Operational Review (HPCOR) All logos Enabling Data-Driven Scientific...

72

High Performance Plastic DSSC | ANSER Center | Argonne-Northwestern...  

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

High Performance Plastic DSSC Home > Research > ANSER Research Highlights > High Performance Plastic DSSC...

73

Strategy Guideline: High Performance Residential Lighting  

SciTech Connect (OSTI)

The Strategy Guideline: High Performance Residential Lighting has been developed to provide a tool for the understanding and application of high performance lighting in the home. The high performance lighting strategies featured in this guide are drawn from recent advances in commercial lighting for application to typical spaces found in residential buildings. This guide offers strategies to greatly reduce lighting energy use through the application of high quality fluorescent and light emitting diode (LED) technologies. It is important to note that these strategies not only save energy in the home but also serve to satisfy the homeowner's expectations for high quality lighting.

Holton, J.

2012-02-01T23:59:59.000Z

74

HIGH-PERFORMANCE COATING MATERIALS  

SciTech Connect (OSTI)

Corrosion, erosion, oxidation, and fouling by scale deposits impose critical issues in selecting the metal components used at geothermal power plants operating at brine temperatures up to 300 C. Replacing these components is very costly and time consuming. Currently, components made of titanium alloy and stainless steel commonly are employed for dealing with these problems. However, another major consideration in using these metals is not only that they are considerably more expensive than carbon steel, but also the susceptibility of corrosion-preventing passive oxide layers that develop on their outermost surface sites to reactions with brine-induced scales, such as silicate, silica, and calcite. Such reactions lead to the formation of strong interfacial bonds between the scales and oxide layers, causing the accumulation of multiple layers of scales, and the impairment of the plant component's function and efficacy; furthermore, a substantial amount of time is entailed in removing them. This cleaning operation essential for reusing the components is one of the factors causing the increase in the plant's maintenance costs. If inexpensive carbon steel components could be coated and lined with cost-effective high-hydrothermal temperature stable, anti-corrosion, -oxidation, and -fouling materials, this would improve the power plant's economic factors by engendering a considerable reduction in capital investment, and a decrease in the costs of operations and maintenance through optimized maintenance schedules.

SUGAMA,T.

2007-01-01T23:59:59.000Z

75

AGILA: The Ateneo High Performance Computing System  

E-Print Network [OSTI]

A Beowulf cluster is a low-cost parallel high performance computing system that uses commodity hardware components such as personal computers and standard Ethernet adapters and switches and runs on freely available software such as Linux and LAM-MPI. In this paper the development of the AGILA HPCS, which stands for the Ateneo GigaflopsRange Performance, Linux OS, and Athlon Processors High Performance Computing System, is discussed including its hardware and software configurations and performance evaluation. Keywords High-performance computing, commodity cluster computing, parallel computing, Beowulf-class cluster 1. INTRODUCTION In the Philippines today, computing power in the range of gigaflops is not generally available for use in research and development. Conventional supercomputers or high performance computing systems are very expensive and are beyond the budgets of most university research groups especially in developing countries such as the Philippines. A lower cost option...

Rafael P. Saldańa; Felix P. Muga; II; Jerrold J. Garcia; William Emmanuel S. Yu; S. Yu

2000-01-01T23:59:59.000Z

76

ADVANCED HIGH PERFORMANCE SOLID WALL BLANKET CONCEPTS  

SciTech Connect (OSTI)

OAK A271 ADVANCED HIGH PERFORMANCE SOLID WALL BLANKET CONCEPTS. First wall and blanket (FW/blanket) design is a crucial element in the performance and acceptance of a fusion power plant. High temperature structural and breeding materials are needed for high thermal performance. A suitable combination of structural design with the selected materials is necessary for D-T fuel sufficiency. Whenever possible, low afterheat, low chemical reactivity and low activation materials are desired to achieve passive safety and minimize the amount of high-level waste. Of course the selected fusion FW/blanket design will have to match the operational scenarios of high performance plasma. The key characteristics of eight advanced high performance FW/blanket concepts are presented in this paper. Design configurations, performance characteristics, unique advantages and issues are summarized. All reviewed designs can satisfy most of the necessary design goals. For further development, in concert with the advancement in plasma control and scrape off layer physics, additional emphasis will be needed in the areas of first wall coating material selection, design of plasma stabilization coils, consideration of reactor startup and transient events. To validate the projected performance of the advanced FW/blanket concepts the critical element is the need for 14 MeV neutron irradiation facilities for the generation of necessary engineering design data and the prediction of FW/blanket components lifetime and availability.

WONG, CPC; MALANG, S; NISHIO, S; RAFFRAY, R; SAGARA, S

2002-04-01T23:59:59.000Z

77

Dinosaurs can fly -- High performance refining  

SciTech Connect (OSTI)

High performance refining requires that one develop a winning strategy based on a clear understanding of one`s position in one`s company`s value chain; one`s competitive position in the products markets one serves; and the most likely drivers and direction of future market forces. The author discussed all three points, then described measuring performance of the company. To become a true high performance refiner often involves redesigning the organization as well as the business processes. The author discusses such redesigning. The paper summarizes ten rules to follow to achieve high performance: listen to the market; optimize; organize around asset or area teams; trust the operators; stay flexible; source strategically; all maintenance is not equal; energy is not free; build project discipline; and measure and reward performance. The paper then discusses the constraints to the implementation of change.

Treat, J.E. [Booz-Allen and Hamilton, Inc., San Francisco, CA (United States)

1995-09-01T23:59:59.000Z

78

High performance computing: Clusters, constellations, MPPs, and future directions  

E-Print Network [OSTI]

and Jim Gray, “High Performance Computing: Crays, Clusters,The Marketplace of High-Performance Computing”, ParallelHigh Performance Computing Clusters, Constellations, MPPs,

Dongarra, Jack; Sterling, Thomas; Simon, Horst; Strohmaier, Erich

2003-01-01T23:59:59.000Z

79

High Performance Computing Data Center (Fact Sheet)  

SciTech Connect (OSTI)

This two-page fact sheet describes the new High Performance Computing Data Center in the ESIF and talks about some of the capabilities and unique features of the center.

Not Available

2014-08-01T23:59:59.000Z

80

High Performance Computing Data Center (Fact Sheet)  

SciTech Connect (OSTI)

This two-page fact sheet describes the new High Performance Computing Data Center being built in the ESIF and talks about some of the capabilities and unique features of the center.

Not Available

2012-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "high performance cold" 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

Design, Implementation and Performance of Exponential Integrators for High Performance Computing Applications  

E-Print Network [OSTI]

interest in high performance computing would help popularizeIntegrators for High Performance Computing Applications Aapplied mathematics, high performance computing and computer

Loffeld, John

2013-01-01T23:59:59.000Z

82

High Performance Computing in Accelerator Science: Past Successes. Future Challenges  

E-Print Network [OSTI]

High Performance Computing in Accelerator Science: PastAC02- 05CH11231. High Performance Computing in Accelerator

Ryne, R.

2013-01-01T23:59:59.000Z

83

Development of a High Performance Air Source Heat Pump for the US Market  

SciTech Connect (OSTI)

Heat pumps present a significant advantage over conventional residential heating technologies due to higher energy efficiencies and less dependence on imported oil. The US development of heat pumps dates back to the 1930 s with pilot units being commercially available in the 1950 s. Reliable and cost competitive units were available in the US market by the 1960 s. The 1973 oil embargo led to increased interest in heat pumps prompting significant research to improve performance, particularly for cold climate locations. Recent increasing concerns on building energy efficiency and environmental emissions have prompted a new wave of research in heat pump technology with special emphasis on reducing performance degradation at colder outdoor air temperatures. A summary of the advantages and limitations of several performance improvement options sought for the development of high performance air source heat pump systems for cold climate applications is the primary focus of this paper. Some recommendations for a high performance cold climate heat pump system design most suitable for the US market are presented.

Abdelaziz, Omar [ORNL] [ORNL; Shen, Bo [ORNL] [ORNL; Gao, Zhiming [ORNL] [ORNL; Baxter, Van D [ORNL] [ORNL; Iu, Ipseng [ORNL] [ORNL

2011-01-01T23:59:59.000Z

84

Performance analysis of memory hierachies in high performance systems  

SciTech Connect (OSTI)

This thesis studies memory bandwidth as a performance predictor of programs. The focus of this work is on computationally intensive programs. These programs are the most likely to access large amounts of data, stressing the memory system. Computationally intensive programs are also likely to use highly optimizing compilers to produce the fastest executables possible. Methods to reduce the amount of data traffic by increasing the average number of references to each item while it resides in the cache are explored. Increasing the average number of references to each cache item reduces the number of memory requests. Chapter 2 describes the DLX architecture. This is the architecture on which all the experiments were performed. Chapter 3 studies memory moves as a performance predictor for a group of application programs. Chapter 4 introduces a model to study the performance of programs in the presence of memory hierarchies. Chapter 5 explores some compiler optimizations that can help increase the references to each item while it resides in the cache.

Yogesh, A.

1993-07-01T23:59:59.000Z

85

Strategy Guideline: Partnering for High Performance Homes  

SciTech Connect (OSTI)

High performance houses require a high degree of coordination and have significant interdependencies between various systems in order to perform properly, meet customer expectations, and minimize risks for the builder. Responsibility for the key performance attributes is shared across the project team and can be well coordinated through advanced partnering strategies. For high performance homes, traditional partnerships need to be matured to the next level and be expanded to all members of the project team including trades, suppliers, manufacturers, HERS raters, designers, architects, and building officials as appropriate. In an environment where the builder is the only source of communication between trades and consultants and where relationships are, in general, adversarial as opposed to cooperative, the chances of any one building system to fail are greater. Furthermore, it is much harder for the builder to identify and capitalize on synergistic opportunities. Partnering can help bridge the cross-functional aspects of the systems approach and achieve performance-based criteria. Critical success factors for partnering include support from top management, mutual trust, effective and open communication, effective coordination around common goals, team building, appropriate use of an outside facilitator, a partnering charter progress toward common goals, an effective problem-solving process, long-term commitment, continuous improvement, and a positive experience for all involved.

Prahl, D.

2013-01-01T23:59:59.000Z

86

Project materials [Commercial High Performance Buildings Project  

SciTech Connect (OSTI)

The Consortium for High Performance Buildings (ChiPB) is an outgrowth of DOE'S Commercial Whole Buildings Roadmapping initiatives. It is a team-driven public/private partnership that seeks to enable and demonstrate the benefit of buildings that are designed, built and operated to be energy efficient, environmentally sustainable, superior quality, and cost effective.

None

2001-01-01T23:59:59.000Z

87

Debugging a high performance computing program  

DOE Patents [OSTI]

Methods, apparatus, and computer program products are disclosed for debugging a high performance computing program by gathering lists of addresses of calling instructions for a plurality of threads of execution of the program, assigning the threads to groups in dependence upon the addresses, and displaying the groups to identify defective threads.

Gooding, Thomas M.

2014-08-19T23:59:59.000Z

88

Debugging a high performance computing program  

SciTech Connect (OSTI)

Methods, apparatus, and computer program products are disclosed for debugging a high performance computing program by gathering lists of addresses of calling instructions for a plurality of threads of execution of the program, assigning the threads to groups in dependence upon the addresses, and displaying the groups to identify defective threads.

Gooding, Thomas M.

2013-08-20T23:59:59.000Z

89

High Performance Building Standards in State Buildings  

Broader source: Energy.gov [DOE]

In June 2008, the governor of Oklahoma signed [http://webserver1.lsb.state.ok.us/2007-08bills/HB/hb3394_enr.rtf HB 3394] requiring the state to develop a high-performance building certification...

90

High Performance Subgraph Mining in Molecular Compounds  

E-Print Network [OSTI]

High Performance Subgraph Mining in Molecular Compounds Giuseppe Di Fatta1,2 and Michael R data makes distributed graph mining techniques particularly relevant. In this paper, we present method has been evaluated on the well-known National Cancer Institute's HIV-screening dataset, where

Reiterer, Harald

91

NET-ZERO ENERGY HIGH PERFORMANCE  

E-Print Network [OSTI]

, University of Nebraska­Lincoln · Denise Kuehn, Manager, Demand Side and Sustainable Management, Omaha Public was that the largest potential for enhancing energy supplies in this country is making buildings more efficient. "-- Harvey Perlman, UNL Chancellor #12;Net-Zero Energy, High-Performance Green Buildings | 1 INTRODUCTION

Farritor, Shane

92

High Performance Commercial Fenestration Framing Systems  

SciTech Connect (OSTI)

A major objective of the U.S. Department of Energy is to have a zero energy commercial building by the year 2025. Windows have a major influence on the energy performance of the building envelope as they control over 55% of building energy load, and represent one important area where technologies can be developed to save energy. Aluminum framing systems are used in over 80% of commercial fenestration products (i.e. windows, curtain walls, store fronts, etc.). Aluminum framing systems are often required in commercial buildings because of their inherent good structural properties and long service life, which is required from commercial and architectural frames. At the same time, they are lightweight and durable, requiring very little maintenance, and offer design flexibility. An additional benefit of aluminum framing systems is their relatively low cost and easy manufacturability. Aluminum, being an easily recyclable material, also offers sustainable features. However, from energy efficiency point of view, aluminum frames have lower thermal performance due to the very high thermal conductivity of aluminum. Fenestration systems constructed of aluminum alloys therefore have lower performance in terms of being effective barrier to energy transfer (heat loss or gain). Despite the lower energy performance, aluminum is the choice material for commercial framing systems and dominates the commercial/architectural fenestration market because of the reasons mentioned above. In addition, there is no other cost effective and energy efficient replacement material available to take place of aluminum in the commercial/architectural market. Hence it is imperative to improve the performance of aluminum framing system to improve the energy performance of commercial fenestration system and in turn reduce the energy consumption of commercial building and achieve zero energy building by 2025. The objective of this project was to develop high performance, energy efficient commercial fenestration framing systems, by investigating new technologies that would improve the thermal performance of aluminum frames, while maintaining their structural and life-cycle performance. The project targeted an improvement of over 30% (whole window performance) over conventional commercial framing technology by improving the performance of commercial framing systems.

Mike Manteghi; Sneh Kumar; Joshua Early; Bhaskar Adusumalli

2010-01-31T23:59:59.000Z

93

The Study on Thermal Performance and Applicability of Energy-saving Wall Materials in Hot Summer and Cold Winter Zones  

E-Print Network [OSTI]

The hot summer and cold winter zone is a transition zone between the cold zone and hot zone, sweltering in summer and chilly in winter, of which climate is worse. In recent years, with people's raised requirements on indoor living environments...

Ren, W.; Lan, M.; Hao, Y.

2006-01-01T23:59:59.000Z

94

Presented by High-Performance Visualization of  

E-Print Network [OSTI]

;2 Managed by UT-Battelle for the U.S. Department of Energy Bhaduri_HPC_GIS_Viz_SC10 Geographic information-Battelle for the U.S. Department of Energy Bhaduri_HPC_GIS_Viz_SC10 GIS and high-performance computing: Incentives ­ Data mining and visual exploratory methods ­ Simulation models #12;4 Managed by UT-Battelle for the U.S

95

High Performance and Sustainable Buildings Guidance  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground Hawaii HIGH PERFORMANCE and SUSTAINABLE BUILDINGS

96

High-Efficiency Resonant RF Spin Rotator with Broad Phase Space Acceptance for Pulsed Polarized Cold Neutron Beams  

E-Print Network [OSTI]

We have developed a radio-frequency resonant spin rotator to reverse the neutron polarization in a 9.5 cm x 9.5 cm pulsed cold neutron beam with high efficiency over a broad cold neutron energy range. The effect of the spin reversal by the rotator on the neutron beam phase space is compared qualitatively to RF neutron spin flippers based on adiabatic fast passage. The spin rotator does not change the kinetic energy of the neutrons and leaves the neutron beam phase space unchanged to high precision. We discuss the design of the spin rotator and describe two types of transmission-based neutron spin-flip efficiency measurements where the neutron beam was both polarized and analyzed by optically-polarized 3He neutron spin filters. The efficiency of the spin rotator was measured to be 98.0+/-0.8% on resonance for neutron energies from 3.3 to 18.4 meV over the full phase space of the beam. As an example of the application of this device to an experiment we describe the integration of the RF spin rotator into an apparatus to search for the small parity-violating asymmetry A_gamma in polarized cold neutron capture on para-hydrogen by the NPDGamma collaboration at LANSCE.

P. -N. Seo; L. Barron-Palos; J. D. Bowman; T. E. Chupp; C. Crawford; M. Dabaghyan; M. Dawkins; S. J. Freedman; T. Gentile; M. T. Gericke; R. C. Gillis; G. L. Greene; F. W. Hersman; G. L. Jones; M. Kandes; S. Lamoreaux; B. Lauss; M. B. Leuschner; R. Mahurin; M. Mason; J. Mei; G. S. Mitchell; H. Nann; S. A. Page; S. I. Penttila; W. D. Ramsay; A. Salas Bacci; S. Santra; M. Sharma; T. B. Smith; W. M. Snow; W. S. Wilburn; H. Zhu

2007-10-15T23:59:59.000Z

97

Managing Stakeholder Requirements in High Performance Computing Procurement  

E-Print Network [OSTI]

Managing Stakeholder Requirements in High Performance Computing Procurement John Rooksby1 , Mark Department of Management, Lancaster University High Performance Computing (HPC) facilities are provided strategy can rigorously meet the demands of the potential users. 1 Introduction High Performance Computing

Sommerville, Ian

98

Middleware in Modern High Performance Computing System Architectures  

E-Print Network [OSTI]

Middleware in Modern High Performance Computing System Architectures Christian Engelmann, Hong Ong trend in modern high performance computing (HPC) system architectures employs "lean" compute nodes) continue to reside on compute nodes. Key words: High Performance Computing, Middleware, Lean Compute Node

Engelmann, Christian

99

Purchase of High Performance Computing (HPC) Central Compute Resources  

E-Print Network [OSTI]

Purchase of High Performance Computing (HPC) Central Compute Resources by Northwestern Researchers summarizes High Performance Computing (HPC) compute resources that faculty engaged in research may purchase of code on the Quest high performance computing system. The installation cycles for new

Shull, Kenneth R.

100

Halide and Oxy-Halide Eutectic Systems for High Performance High...  

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

High Performance High Temperature Heat Transfer Fluids Halide and Oxy-Halide Eutectic Systems for High Performance High Temperature Heat Transfer Fluids This document summarizes...

Note: This page contains sample records for the topic "high performance cold" 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

Possible Origin of Improved High Temperature Performance of Hydrotherm...  

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

Origin of Improved High Temperature Performance of Hydrothermally Aged CuBeta Zeolite Catalysts. Possible Origin of Improved High Temperature Performance of Hydrothermally Aged...

102

Federal Leadership in High Performance and Sustainable Buildings...  

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

leadership in the design, construction, and operation of High-Performance and Sustainable Buildings. Federal Leadership in High Performance and Sustainable Buildings...

103

USABC Development of Advanced High-Performance Batteries for...  

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

USABC Development of Advanced High-Performance Batteries for EV Applications USABC Development of Advanced High-Performance Batteries for EV Applications 2012 DOE Hydrogen and Fuel...

104

Energy Efficiency Opportunities in Federal High Performance Computing...  

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

Energy Efficiency Opportunities in Federal High Performance Computing Data Centers Energy Efficiency Opportunities in Federal High Performance Computing Data Centers Case study...

105

High-Performance Computing at Los Alamos announces milestone...  

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

High-Performance Computing announces milestone High-Performance Computing at Los Alamos announces milestone for keyvalue middleware Billion inserts-per-second data milestone...

106

John Shalf Gives Talk at San Francisco High Performance Computing...  

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

John Shalf Gives Talk at San Francisco High Performance Computing Meetup John Shalf Gives Talk at San Francisco High Performance Computing Meetup September 17, 2014 XBD200503 00083...

107

New rocket propellant and motor design offer high-performance...  

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

New rocket propellant and motor design offer high-performance and safety New rocket propellant and motor design offer high-performance and safety Scientists recently flight tested...

108

High-Performance Sustainable Building Design for New Construction...  

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

Buildings & Campuses High-Performance Sustainable Building Design for New Construction and Major Renovations High-Performance Sustainable Building Design for New...

109

Project Profile: High Performance Reduction/Oxidation Metal Oxides...  

Office of Environmental Management (EM)

High Performance ReductionOxidation Metal Oxides for Thermochemical Energy Storage Project Profile: High Performance ReductionOxidation Metal Oxides for Thermochemical Energy...

110

Webinar: ENERGY STAR Hot Water Systems for High Performance Homes...  

Energy Savers [EERE]

Webinar: ENERGY STAR Hot Water Systems for High Performance Homes Webinar: ENERGY STAR Hot Water Systems for High Performance Homes This presentation is from the Building America...

111

Building America Webinar: High-Performance Enclosure Strategies...  

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

Building America Webinar: High-Performance Enclosure Strategies, Part I: Unvented Roof Systems and Innovative Advanced Framing Strategies Building America Webinar: High-Performance...

112

Flexible Pillared Graphene-Paper Electrodes for High-Performance...  

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

Flexible Pillared Graphene-Paper Electrodes for High-Performance Electrochemical Supercapacitors. Flexible Pillared Graphene-Paper Electrodes for High-Performance Electrochemical...

113

Revisit of Energy Use and Technologies of High Performance Buildings  

E-Print Network [OSTI]

Revisit of Energy Use and Technologies of High PerformanceEnvironmental Energy Technologies Division May 2014 ThisRevisit of Energy Use and Technologies of High Performance

Li Ph.D., Cheng

2014-01-01T23:59:59.000Z

114

High Performance Without Increased Cost: Urbane Homes, Louisville...  

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

High Performance Without Increased Cost: Urbane Homes, Louisville, KY - Building America Top Innovation High Performance Without Increased Cost: Urbane Homes, Louisville, KY -...

115

The Technical and Economical Analysis of a Centralized Air-Conditioning System with Cold Storage Refrigeration in High-Rise Residential Buildings  

E-Print Network [OSTI]

In recent years, the application of a centralized air-conditioning system (CACS) with cold storage refrigeration in high-rise residential buildings has gradually increased. Due to the large difference between civil residential buildings...

Xiang, C.; Xie, G.

2006-01-01T23:59:59.000Z

116

DOE High Performance Concentrator PV Project  

SciTech Connect (OSTI)

Much in demand are next-generation photovoltaic (PV) technologies that can be used economically to make a large-scale impact on world electricity production. The U.S. Department of Energy (DOE) initiated the High-Performance Photovoltaic (HiPerf PV) Project to substantially increase the viability of PV for cost-competitive applications so that PV can contribute significantly to both our energy supply and environment. To accomplish such results, the National Center for Photovoltaics (NCPV) directs in-house and subcontracted research in high-performance polycrystalline thin-film and multijunction concentrator devices with the goal of enabling progress of high-efficiency technologies toward commercial-prototype products. We will describe the details of the subcontractor and in-house progress in exploring and accelerating pathways of III-V multijunction concentrator solar cells and systems toward their long-term goals. By 2020, we anticipate that this project will have demonstrated 33% system efficiency and a system price of $1.00/Wp for concentrator PV systems using III-V multijunction solar cells with efficiencies over 41%.

McConnell, R.; Symko-Davies, M.

2005-08-01T23:59:59.000Z

117

High performance robotic traverse of desert terrain.  

SciTech Connect (OSTI)

This report presents tentative innovations to enable unmanned vehicle guidance for a class of off-road traverse at sustained speeds greater than 30 miles per hour. Analyses and field trials suggest that even greater navigation speeds might be achieved. The performance calls for innovation in mapping, perception, planning and inertial-referenced stabilization of components, hosted aboard capable locomotion. The innovations are motivated by the challenge of autonomous ground vehicle traverse of 250 miles of desert terrain in less than 10 hours, averaging 30 miles per hour. GPS coverage is assumed to be available with localized blackouts. Terrain and vegetation are assumed to be akin to that of the Mojave Desert. This terrain is interlaced with networks of unimproved roads and trails, which are a key to achieving the high performance mapping, planning and navigation that is presented here.

Whittaker, William (Carnegie Mellon University, Pittsburgh, PA)

2004-09-01T23:59:59.000Z

118

Climate Modeling using High-Performance Computing  

SciTech Connect (OSTI)

The Center for Applied Scientific Computing (CASC) and the LLNL Climate and Carbon Science Group of Energy and Environment (E and E) are working together to improve predictions of future climate by applying the best available computational methods and computer resources to this problem. Over the last decade, researchers at the Lawrence Livermore National Laboratory (LLNL) have developed a number of climate models that provide state-of-the-art simulations on a wide variety of massively parallel computers. We are now developing and applying a second generation of high-performance climate models. Through the addition of relevant physical processes, we are developing an earth systems modeling capability as well.

Mirin, A A

2007-02-05T23:59:59.000Z

119

High Performance and Sustainable Buildings Guidance  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.ProgramJulietip sheetK-4In 2013 many| Department HIGH PERFORMANCE and

120

High Performance Piezoelectric Actuated Gimbal (HIERAX)  

SciTech Connect (OSTI)

This paper presents a 3-axis gimbal whose three rotational axes are actuated by a novel drive system: linear piezoelectric motors whose linear output is converted to rotation by using drive disks. Advantages of this technology are: fast response, high accelerations, dither-free actuation and backlash-free positioning. The gimbal was developed to house a laser range finder for the purpose of tracking and guiding unmanned aerial vehicles during landing maneuvers. The tilt axis was built and the test results indicate excellent performance that meets design specifications.

Charles Tschaggeny; Warren Jones; Eberhard Bamberg

2007-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "high performance cold" 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

High performance computing and numerical modelling  

E-Print Network [OSTI]

Numerical methods play an ever more important role in astrophysics. This is especially true in theoretical works, but of course, even in purely observational projects, data analysis without massive use of computational methods has become unthinkable. The key utility of computer simulations comes from their ability to solve complex systems of equations that are either intractable with analytic techniques or only amenable to highly approximative treatments. Simulations are best viewed as a powerful complement to analytic reasoning, and as the method of choice to model systems that feature enormous physical complexity such as star formation in evolving galaxies, the topic of this 43rd Saas Fee Advanced Course. The organizers asked me to lecture about high performance computing and numerical modelling in this winter school, and to specifically cover the basics of numerically treating gravity and hydrodynamics in the context of galaxy evolution. This is still a vast field, and I necessarily had to select a subset ...

,

2014-01-01T23:59:59.000Z

122

High-performance computing for airborne applications  

SciTech Connect (OSTI)

Recently, there has been attempts to move common satellite tasks to unmanned aerial vehicles (UAVs). UAVs are significantly cheaper to buy than satellites and easier to deploy on an as-needed basis. The more benign radiation environment also allows for an aggressive adoption of state-of-the-art commercial computational devices, which increases the amount of data that can be collected. There are a number of commercial computing devices currently available that are well-suited to high-performance computing. These devices range from specialized computational devices, such as field-programmable gate arrays (FPGAs) and digital signal processors (DSPs), to traditional computing platforms, such as microprocessors. Even though the radiation environment is relatively benign, these devices could be susceptible to single-event effects. In this paper, we will present radiation data for high-performance computing devices in a accelerated neutron environment. These devices include a multi-core digital signal processor, two field-programmable gate arrays, and a microprocessor. From these results, we found that all of these devices are suitable for many airplane environments without reliability problems.

Quinn, Heather M [Los Alamos National Laboratory; Manuzatto, Andrea [Los Alamos National Laboratory; Fairbanks, Tom [Los Alamos National Laboratory; Dallmann, Nicholas [Los Alamos National Laboratory; Desgeorges, Rose [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

123

CENTER FOR HIGH PERFORMANCE COMPUTING Overview of CHPC  

E-Print Network [OSTI]

CENTER FOR HIGH PERFORMANCE COMPUTING Overview of CHPC Julia Harrison, Associate Director Center for High Performance Computing julia.harrison@utah.edu Spring 2009 #12;CENTER FOR HIGH PERFORMANCE://www.chpc.utah.edu/docs/services.html 2/26/09 http://www.chpc.utah.edu Slide 3 #12;CENTER FOR HIGH PERFORMANCE COMPUTING Arches 2

Alvarado, Alejandro Sánchez

124

C++ programming techniques for High Performance Computing on systems with  

E-Print Network [OSTI]

C++ programming techniques for High Performance Computing on systems with non-uniform memory access (including NUMA) without sacrificing performance. ccNUMA In High Performance Computing (HPC), shared- memory

Fiebig, Peter

125

Integrating advanced facades into high performance buildings  

SciTech Connect (OSTI)

Glass is a remarkable material but its functionality is significantly enhanced when it is processed or altered to provide added intrinsic capabilities. The overall performance of glass elements in a building can be further enhanced when they are designed to be part of a complete facade system. Finally the facade system delivers the greatest performance to the building owner and occupants when it becomes an essential element of a fully integrated building design. This presentation examines the growing interest in incorporating advanced glazing elements into more comprehensive facade and building systems in a manner that increases comfort, productivity and amenity for occupants, reduces operating costs for building owners, and contributes to improving the health of the planet by reducing overall energy use and negative environmental impacts. We explore the role of glazing systems in dynamic and responsive facades that provide the following functionality: Enhanced sun protection and cooling load control while improving thermal comfort and providing most of the light needed with daylighting; Enhanced air quality and reduced cooling loads using natural ventilation schemes employing the facade as an active air control element; Reduced operating costs by minimizing lighting, cooling and heating energy use by optimizing the daylighting-thermal tradeoffs; Net positive contributions to the energy balance of the building using integrated photovoltaic systems; Improved indoor environments leading to enhanced occupant health, comfort and performance. In addressing these issues facade system solutions must, of course, respect the constraints of latitude, location, solar orientation, acoustics, earthquake and fire safety, etc. Since climate and occupant needs are dynamic variables, in a high performance building the facade solution have the capacity to respond and adapt to these variable exterior conditions and to changing occupant needs. This responsive performance capability can also offer solutions to building owners where reliable access to the electric grid is a challenge, in both less-developed countries and in industrialized countries where electric generating capacity has not kept pace with growth. We find that when properly designed and executed as part of a complete building solution, advanced facades can provide solutions to many of these challenges in building design today.

Selkowitz, Stephen E.

2001-05-01T23:59:59.000Z

126

High-performance, high-volume fly ash concrete  

SciTech Connect (OSTI)

This booklet offers the construction professional an in-depth description of the use of high-volume fly ash in concrete. Emphasis is placed on the need for increased utilization of coal-fired power plant byproducts in lieu of Portland cement materials to eliminate increased CO{sub 2} emissions during the production of cement. Also addressed is the dramatic increase in concrete performance with the use of 50+ percent fly ash volume. The booklet contains numerous color and black and white photos, charts of test results, mixtures and comparisons, and several HVFA case studies.

NONE

2008-01-15T23:59:59.000Z

127

High Temperature Oxidation Performance of Aluminide Coatings  

SciTech Connect (OSTI)

Aluminide coatings are of interest for many high temperature applications because of the possibility of improving the oxidation resistance of structural alloys by forming a protective external alumina scale. Steam and exhaust gas environments are of particular interest because alumina is less susceptible to the accelerated attack due to hydroxide formation observed for chromia- and silica-forming alloys and ceramics. For water vapor testing, one ferritic (Fe-9Cr-1Mo) and one austenitic alloy (304L) have been selected as substrate materials and CVD coatings have been used in order to have a well-controlled, high purity coating. It is anticipated that similar aluminide coatings could be made by a higher-volume, commercial process such as pack cementation. Previous work on this program has examined as-deposited coatings made by high and low Al activity CVD processes and the short-term performance of these coatings. The current work is focusing on the long term behavior in both diffusion tests16 and oxidation tests of the thicker, high Al activity coatings. For long-term coating durability, one area of concern has been the coefficient of thermal expansion (CTE) mismatch between coating and substrate. This difference could cause cracking or deformation that could reduce coating life. Corrosion testing using thermal cycling is of particular interest because of this potential problem and results are presented where a short exposure cycle (1h) severely degraded aluminide coatings on both types of substrates. To further study the potential role of aluminide coatings in fossil energy applications, several high creep strength Ni-base alloys were coated by CVD for testing in a high pressure (20atm) steam-CO{sub 2} environment for the ZEST (zero-emission steam turbine) program. Such alloys would be needed as structural and turbine materials in this concept. For Ni-base alloys, CVD produces a {approx}50{mu}m {beta}-NiAl outer layer with an underlying interdiffusion zone. Specimens of HR160, alloy 601 and alloy 230 were tested with and without coatings at 900 C and preliminary post-test characterization is reported.

Pint, Bruce A [ORNL; Zhang, Ying [Tennessee Technological University; Haynes, James A [ORNL; Wright, Ian G [ORNL

2004-01-01T23:59:59.000Z

128

Physics Analyses in the Design of the HFIR Cold Neutron Source  

SciTech Connect (OSTI)

Physics analyses have been performed to characterize the performance of the cold neutron source to be installed in the High Flux Isotope Reactor at the Oak Ridge National Laboratory in the near future. This paper provides a description of the physics models developed, and the resulting analyses that have been performed to support the design of the cold source. These analyses have provided important parametric performance information, such as cold neutron brightness down the beam tube and the various component heat loads, that have been used to develop the reference cold source concept.

Bucholz, J.A.

1999-09-27T23:59:59.000Z

129

Building America Webinar: High Performance Space Conditioning...  

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

EST The webinar will continue our series on strategies to improve the performance of HVAC systems for low load homes and home performance retrofits. Presenters and specific...

130

High performance internal reforming unit for high temperature fuel cells  

DOE Patents [OSTI]

A fuel reformer having an enclosure with first and second opposing surfaces, a sidewall connecting the first and second opposing surfaces and an inlet port and an outlet port in the sidewall. A plate assembly supporting a catalyst and baffles are also disposed in the enclosure. A main baffle extends into the enclosure from a point of the sidewall between the inlet and outlet ports. The main baffle cooperates with the enclosure and the plate assembly to establish a path for the flow of fuel gas through the reformer from the inlet port to the outlet port. At least a first directing baffle extends in the enclosure from one of the sidewall and the main baffle and cooperates with the plate assembly and the enclosure to alter the gas flow path. Desired graded catalyst loading pattern has been defined for optimized thermal management for the internal reforming high temperature fuel cells so as to achieve high cell performance.

Ma, Zhiwen (Sandy Hook, CT); Venkataraman, Ramakrishnan (New Milford, CT); Novacco, Lawrence J. (Brookfield, CT)

2008-10-07T23:59:59.000Z

131

High-performance commercial building systems  

E-Print Network [OSTI]

IAQ, with possible improvements in attendance, health and learning in schools and performance and productivity

Selkowitz, Stephen

2003-01-01T23:59:59.000Z

132

Java for High Performance Computing Java HPC Codes  

E-Print Network [OSTI]

Motivation Java for High Performance Computing Java HPC Codes Performance Evaluation Conclusions Java for High Performance Computing: Myth or Reality? Guillermo LĂłpez Taboada Grupo de Arquitectura de LĂłpez Taboada Java for HPC: Myth or Reality? #12;Motivation Java for High Performance Computing Java HPC

Fraguela, Basilio B.

133

High-performance commercial building systems  

SciTech Connect (OSTI)

This report summarizes key technical accomplishments resulting from the three year PIER-funded R&D program, ''High Performance Commercial Building Systems'' (HPCBS). The program targets the commercial building sector in California, an end-use sector that accounts for about one-third of all California electricity consumption and an even larger fraction of peak demand, at a cost of over $10B/year. Commercial buildings also have a major impact on occupant health, comfort and productivity. Building design and operations practices that influence energy use are deeply engrained in a fragmented, risk-averse industry that is slow to change. Although California's aggressive standards efforts have resulted in new buildings designed to use less energy than those constructed 20 years ago, the actual savings realized are still well below technical and economic potentials. The broad goal of this program is to develop and deploy a set of energy-saving technologies, strategies, and techniques, and improve processes for designing, commissioning, and operating commercial buildings, while improving health, comfort, and performance of occupants, all in a manner consistent with sound economic investment practices. Results are to be broadly applicable to the commercial sector for different building sizes and types, e.g. offices and schools, for different classes of ownership, both public and private, and for owner-occupied as well as speculative buildings. The program aims to facilitate significant electricity use savings in the California commercial sector by 2015, while assuring that these savings are affordable and promote high quality indoor environments. The five linked technical program elements contain 14 projects with 41 distinct R&D tasks. Collectively they form a comprehensive Research, Development, and Demonstration (RD&D) program with the potential to capture large savings in the commercial building sector, providing significant economic benefits to building owners and health and performance benefits to occupants. At the same time this program can strengthen the growing energy efficiency industry in California by providing new jobs and growth opportunities for companies providing the technology, systems, software, design, and building services to the commercial sector. The broad objectives across all five program elements were: (1) To develop and deploy an integrated set of tools and techniques to support the design and operation of energy-efficient commercial buildings; (2) To develop open software specifications for a building data model that will support the interoperability of these tools throughout the building life-cycle; (3) To create new technology options (hardware and controls) for substantially reducing controllable lighting, envelope, and cooling loads in buildings; (4) To create and implement a new generation of diagnostic techniques so that commissioning and efficient building operations can be accomplished reliably and cost effectively and provide sustained energy savings; (5) To enhance the health, comfort and performance of building occupants. (6) To provide the information technology infrastructure for owners to minimize their energy costs and manage their energy information in a manner that creates added value for their buildings as the commercial sector transitions to an era of deregulated utility markets, distributed generation, and changing business practices. Our ultimate goal is for our R&D effort to have measurable market impact. This requires that the research tasks be carried out with a variety of connections to key market actors or trends so that they are recognized as relevant and useful and can be adopted by expected users. While some of this activity is directly integrated into our research tasks, the handoff from ''market-connected R&D'' to ''field deployment'' is still an art as well as a science and in many areas requires resources and a timeframe well beyond the scope of this PIER research program. The TAGs, PAC and other industry partners have assisted directly in this effort

Selkowitz, Stephen

2003-10-01T23:59:59.000Z

134

Project Profile: Development and Performance Evaluation of High...  

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

Development and Performance Evaluation of High Temperature Concrete for Thermal Energy Storage for Solar Power Generation Project Profile: Development and Performance Evaluation of...

135

Building America Webinar: High Performance Space Conditioning...  

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

3:00PM to 4:30PM EDT The webinar will focus on strategies to improve the performance of HVAC systems for low load homes and home performance retrofits. Presenters and specific...

136

Empirical Performance Analysis of High Performance Computing Benchmarks Across Variations in Cloud Computing.  

E-Print Network [OSTI]

??High Performance Computing (HPC) applications are data-intensive scientific software requiring significant CPU and data storage capabilities. Researchers have examined the performance of Amazon Elastic Compute… (more)

Mani, Sindhu

2012-01-01T23:59:59.000Z

137

Mitigating Performance Degradation of High-Energy Lithium-Ion...  

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

Mitigating Performance Degradation of High-Energy Lithium-Ion Cells Mitigating Performance Degradation of High-Energy Lithium-Ion Cells 2013 DOE Hydrogen and Fuel Cells Program and...

138

Geocomputation's future at the extremes: high performance computing and nanoclients  

E-Print Network [OSTI]

Geocomputation's future at the extremes: high performance computing and nanoclients K.C. Clarke; High performance computing; Tractability; Geocom- putation E-mail address: kclarke@geog.ucsb.edu (K

Clarke, Keith

139

M Sathia Narayanan MAE 609 High Performance Computing  

E-Print Network [OSTI]

M Sathia Narayanan 3401 2454 MAE 609 High Performance Computing M. Jones (instructor) Project . . . 27 Page 1 of 28 #12;M Sathia Narayanan 3401 2454 MAE 609 High Performance Computing M. Jones

Krovi, Venkat

140

Guiding Principles for Federal Leadership in High-Performance...  

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

and Sustainable Buildings Memorandum of Understanding and the Interagency Sustainability Working Group's High-Performance and Sustainable Buildings Guidance....

Note: This page contains sample records for the topic "high performance cold" 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

Software Reuse in High Performance Computing Shirley Browne  

E-Print Network [OSTI]

Software Reuse in High Performance Computing Shirley Browne University of Tennessee 107 Ayres Hall high performance computing architectures in the form of distributed memorymul- tiprocessors have become of programming applications to run on these machines. Economical use of high performance computing and subsequent

Hawick, Ken

142

Evaluating Parameter Sweep Workflows in High Performance Computing*  

E-Print Network [OSTI]

Evaluating Parameter Sweep Workflows in High Performance Computing* Fernando Chirigati1,# , VĂ­tor a large amount of tasks that are submitted to High Performance Computing (HPC) environments. Different, Parameter Sweep, High Performance Computing (HPC) 1. INTRODUCTION1 # Many scientific experiments are based

Paris-Sud XI, Université de

143

1High Performance Computing at Liberal Arts Colleges Workshop 3  

E-Print Network [OSTI]

1High Performance Computing at Liberal Arts Colleges ­ Workshop 3 11October 27, 2009 Experiences (?) #12;2High Performance Computing at Liberal Arts Colleges ­ Workshop 3 22 Acknowledgements Thanks to. October 27, 2009 #12;3High Performance Computing at Liberal Arts Colleges ­ Workshop 3 33October 27, 2009

Barr, Valerie

144

Software Reuse in High Performance Computing Shirley Browne  

E-Print Network [OSTI]

Software Reuse in High Performance Computing Shirley Browne University of Tennessee 107 Ayres Hall high performance computing architectures in the form of distributed memory mul­ tiprocessors have and cost of programming applications to run on these machines. Economical use of high performance computing

Dongarra, Jack

145

Applying High Performance Computing to Analyzing by Probabilistic Model Checking  

E-Print Network [OSTI]

Applying High Performance Computing to Analyzing by Probabilistic Model Checking Mobile Cellular on the use of high performance computing in order to analyze with the proba- bilistic model checker PRISM. The Figure Generation Script 22 2 #12;1. Introduction We report in this paper on the use of high performance

Schneider, Carsten

146

Universal High Performance Computing ---We Have Just Begun  

E-Print Network [OSTI]

Universal High Performance Computing --- We Have Just Begun Jerome A. Feldman April, 1994, and deployment. At present, high performance computing is entirely different. Although there have been some commercial factor. A prerequisite for Universal High Performance Computing (UHPC) is con­ vergence

California at Berkeley, University of

147

High Performance Computing with a Conservative Spectral Boltzmann Solver  

E-Print Network [OSTI]

High Performance Computing with a Conservative Spectral Boltzmann Solver Jeffrey R. Haack and Irene the structure of the collisional formulation for high performance computing environments. The locality in space on high performance computing resources. We also use the improved computational power of this method

148

Studying Code Development for High Performance Computing: The HPCS Program  

E-Print Network [OSTI]

Studying Code Development for High Performance Computing: The HPCS Program Jeff Carver1 , Sima at measuring the development time for programs written for high performance computers (HPC). Our goal. Introduction The development of High-Performance Computing (HPC) programs (codes) is crucial to progress

Basili, Victor R.

149

High Performance Computing (HPC) Central Storage Resources for Research Support  

E-Print Network [OSTI]

High Performance Computing (HPC) Central Storage Resources for Research Support Effective for FY. They also describe new applications and technologies related to research in high performance computing2011 Revised: March 7, 2011 Page 1 Information Technology Purpose This memo summarizes High Performance

Shahriar, Selim

150

High Performance www.rrze.uni-erlangen.de  

E-Print Network [OSTI]

High Performance Computing at RRZE 2008 HPCatRRZE www.rrze.uni-erlangen.de #12;G. Hager, T. Zeiser and G. Wellein: Concepts of High Performance Computing. In: Fehske et al. Lect. Notes Phys. 739, 681 Optimization Techniques for the Hitachi SR8000 architecture. In: A. Bode (Ed.) : High Performance Computing

Fiebig, Peter

151

Advanced Environments and Tools for High Performance Computing  

E-Print Network [OSTI]

Advanced Environments and Tools for High Performance Computing Problem-Solving Environments Environments and Tools for High Performance Computing. The conference was chaired by Professor D. W. Walker and managing distributed high performance comput- ing resources is important for a PSE to meet the requirements

Walker, David W.

152

High performance phenolic piping for oilfield applications  

SciTech Connect (OSTI)

The performance advantages of phenolic resins have been enticing for composites manufacturers and users for many years. The use of these materials has been limited, however, by the process, handling and assembly difficulties they present. This paper introduces an innovative modification which has allowed the development of a filament wound piping system for oilfield applications which previously had been beyond the performance envelope of fiberglass pipe. Improvement in temperature resistance and response to steam exposure, as compared to conventional epoxy products, are of particular benefit. Fabrication innovations are also included which can be used where impact resistance or fire performance are needed.

Folkers, J.L. [Ameron International, Burkburnett, TX (United States); Friedrich, R.S.; Fortune, M. [Ameron International, South Gate, CA (United States)

1997-08-01T23:59:59.000Z

153

High Performance Computing and Storage Requirements for Biological and Environmental Research Target 2017  

E-Print Network [OSTI]

Journal   of   High   Performance  Computing  Applications  and   high-­?performance   computing   is   critical   in  context   requires   High  Performance   Computing  (HPC)  

Gerber, Richard

2014-01-01T23:59:59.000Z

154

May 28, 2007 Middleware in Modern High Performance Computing System Architectures 1/20 Middleware in Modern High Performance  

E-Print Network [OSTI]

May 28, 2007 Middleware in Modern High Performance Computing System Architectures 1/20 Middleware in Modern High Performance Computing System Architectures Christian Engelmann1,2, Hong Ong1, Stephen L 28, 2007 Middleware in Modern High Performance Computing System Architectures 2/20 Talk Outline

Engelmann, Christian

155

PERFORMANCE-RELATED SPECIAL PROVISION FOR HIGH PERFORMANCE CONCRETE MIX DESIGNS FOR CONCRETE SUPERSTRUCTURE (Tollway)  

E-Print Network [OSTI]

PERFORMANCE-RELATED SPECIAL PROVISION FOR HIGH PERFORMANCE CONCRETE MIX DESIGNS FOR CONCRETE of designing and furnishing high performance portland cement concrete for special applications to the decks the Illinois Tollway with a methodology to assure high quality concrete with reduced shrinkage potential, while

156

Building America Best Practices Series, Volume 7.1 - High-Performance...  

Energy Savers [EERE]

Marine PA Pennsylvania Adams Cold PA Pennsylvania Allegheny Cold PA Pennsylvania Armstrong Cold PA Pennsylvania Beaver Cold PA Pennsylvania Bedford Cold PA Pennsylvania Berks...

157

Design and experimental testing of the performance of an outdoor LiBr/H{sub 2}O solar thermal absorption cooling system with a cold store  

SciTech Connect (OSTI)

A domestic-scale prototype experimental solar cooling system has been developed based on a LiBr/H{sub 2}O absorption system and tested during the 2007 summer and autumn months in Cardiff University, UK. The system consisted of a 12 m{sup 2} vacuum tube solar collector, a 4.5 kW LiBr/H{sub 2}O absorption chiller, a 1000 l cold storage tank and a 6 kW fan coil. The system performance, as well as the performances of the individual components in the system, were evaluated based on the physical measurements of the daily solar radiation, ambient temperature, inlet and outlet fluid temperatures, mass flow rates and electrical consumption by component. The average coefficient of thermal performance (COP) of the system was 0.58, based on the thermal cooling power output per unit of available thermal solar energy from the 12 m{sup 2} Thermomax DF100 vacuum tube collector on a hot sunny day with average peak insolation of 800 W/m{sup 2} (between 11 and 13.30 h) and ambient temperature of 24 C. The system produced an electrical COP of 3.6. Experimental results prove the feasibility of the new concept of cold store at this scale, with chilled water temperatures as low as 7.4 C, demonstrating its potential use in cooling domestic scale buildings. (author)

Agyenim, Francis; Knight, Ian; Rhodes, Michael [The Welsh School of Architecture, Bute Building, King Edward VII Avenue, Cardiff University, Cardiff, CF10 3NB Wales (United Kingdom)

2010-05-15T23:59:59.000Z

158

High-Performance Commercial Cold Climate Heat Pump | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergy Health and Productivity QuestionnaireSingle Emitter |

159

RAMCloud: Scalable High-Performance Storage  

E-Print Network [OSTI]

in the future: · Indexes? · Transactions? · Graphs? Goals: No impact on performance Minimum cost, energy! Main-memory DBs, again #12;5/31/11 2 DRAM in Storage Systems DRAM usage limited/specialized Clumsy of applications: Crowd-level collaboration Large-scale graph algorithms Real-time information

van Dyk, David

160

System Identification and Modelling of a High Performance Hydraulic Actuator  

E-Print Network [OSTI]

System Identification and Modelling of a High Performance Hydraulic Actuator Benoit Boulet, Laeeque with the experimental identification and modelling of the nonlinear dynamics ofa high performance hydraulic actuator. The actuator properties and performance are also discussed. 1 Introduction Hydraulic actuation used to be

Hayward, Vincent

Note: This page contains sample records for the topic "high performance cold" 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

High Performance Green LEDs by Homoepitaxial  

SciTech Connect (OSTI)

This work's objective was the development of processes to double or triple the light output power from green and deep green (525 - 555 nm) AlGaInN light emitting diode (LED) dies within 3 years in reference to the Lumileds Luxeon II. The project paid particular effort to all aspects of the internal generation efficiency of light. LEDs in this spectral region show the highest potential for significant performance boosts and enable the realization of phosphor-free white LEDs comprised by red-green-blue LED modules. Such modules will perform at and outperform the efficacy target projections for white-light LED systems in the Department of Energy's accelerated roadmap of the SSL initiative.

Wetzel, Christian; Schubert, E Fred

2009-11-22T23:59:59.000Z

162

A Survey of High Performance Schools  

E-Print Network [OSTI]

of Indoor Air Quality Problems in Schools: Summary of Scientific Reserach (No. ORNL/M-6633/R1). Oak Ridge, Tennessee: Oak Ridge National Laboratory. Becker, B. R. 1990. A Computational parametric Study of Elementary School Energy Use. ASHRAE.... Paper presented at the IAQ 96. Fischer, J., & Sand, J. 2005. Field Test and Performance Verification:Integrated Active Desiccant Rooftop Hybrid System Installed in a School (No. ORNL/SUB/01/4000025209). Oak Ridge, Tennessee: OAK RIDGE NATIONAL...

Im, P.; Haberl, J. S.

2006-01-01T23:59:59.000Z

163

HIGH-CURRENT COLD CATHODE FIELD EMISSION ARRAY FOR ELECTRON LENS APPLICATION  

SciTech Connect (OSTI)

During Phase I, the following goals were achieved: (1) design and fabrication of a novel, nano-dimensional CNT field emitter assembly for high current density application, with high durability; (2) fabrication of a ceramic based micro channel plate (MCP) and characterization of its secondary electron emission; and (3) characterizing the CNT/MCP cathode for high field emission and durability. As a result of these achievements, a relatively high current density of ~ 1.2 A/cm2 from a CNT cathode and single channel MCP were measured. The emission current was also extremely stable with a peak-to-peak variation of only 1.8%. The emission current could be further enhanced to meet requirements for electron lens applications by increasing the number of MCP channels. A calculation for maximum possible current density with a 1200 channel/cm2 MCP, placed over a cathode with 1200 uniformly functioning CNTs, would be ~1.46 kA/cm2, neglecting space charge limitations. Clearly this level of emission is far greater than what is needed for the electron lens application, but it does offer a highly comforting margin to account for sub-standard emitters and/or to allow the lesser challenge of building a cathode with fewer channels/cm2. A satisfactory goal for the electron lens application would be a controllable emission of 2-4 mA per channel in an ensemble of 800-1200 uniformly-functioning channels/cm2, and a cathode with overall area of about 1 cm2.

Hirshfield, Jay L

2012-12-28T23:59:59.000Z

164

High performance, close-spaced thermionic converters  

SciTech Connect (OSTI)

Near ideal performance in a Thermionic Energy Converter (TEC) can be obtained using extremely small (< 10 microns) interelectrode spacings. Previous efforts to build such converters have encountered engineering problems. A new type of converter, called SAVTEC (for Self-Adjusting, Versatile Thermionic Energy Converter) has been developed at Rasor Associates, Inc., as a practical way to achieve small spacings. It has been demonstrated to deliver improved performance over conventional, ignited-mode converters. A series of individual SAVTEC's have been built and tested. Two general configurations were built: in the first a single emitter support lead (0.25 mm wire) passes through a hole in the center of the collector, with the emitter being welded to it. In the second three smaller wires replace the center wire and are welded to the emitter perimeter. These converters have shown reliable, temperature controlled spacings of the emitter and collector. Reproducible spacing of 10 microns (0.4 mils) were achieved on several converters. This paper presents details of SAVTEC converter construction and performance, including volt-ampere curves.

Dick, R.S.; Britt, E.J.; Fitzpatrick, G.O.; McVey, J.B.

1983-08-01T23:59:59.000Z

165

High intensity performance of the Brookhaven AGS  

SciTech Connect (OSTI)

Experience and results from recent high intensity proton running periods of the Brookhaven AGS, during which a record intensity for a proton synchrotron of 6.3 x 10{sup 13} protons/pulse was reached, is presented. This high beam intensity allowed for the simultaneous operation of three high precision rare kaon decay experiments. The record beam intensities were achieved after the 1.5 GeV Booster was commissioned and a transition jump system, a powerful transverse damper, and an rf upgrade in the AGS were completed. Recently even higher intensity proton synchrotrons are studied for neutron spallation sources or proton driver for a muon collider. Implications of the experiences from the AGS to these proposals and also possible future upgrades for the AGS are discussed.

Brennan, J.M.; Roser, T.

1996-07-01T23:59:59.000Z

166

High Performance Window Attachments | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office0-72.pdfGeorge Waldmann GeorgeLogging| DepartmentScienceLouisiana |HighHigh

167

W(310) cold-field emission characteristics reflecting the vacuum states of an extreme high vacuum electron gun  

SciTech Connect (OSTI)

An extremely high vacuum cold-field electron emission (CFE) gun operating at pressures ranging from {approx}10{sup -8} Pa to {approx}10{sup -10} Pa was constructed. Only the CFE current emitting from W(310) surfaces revealed the existence of a 'stable region' with high current angular density just after tip flash heating. In the 'stable region,' the CFE current was damped very slowly. The presence of non-hydrogen gas eliminated this region from the plot. Improvement of the vacuum prolonged the 90% damping time of the CFE current from {approx}10 min to 800 min. The current angular density I{sup Prime} of CFE current was 60 and 250 {mu}A/sr in the 'stable region' for total CFE currents of 10 and 50 {mu}A, respectively. These results were about three times larger than I{sup Prime} when measured after the complete damping of the CFE current. The CFE gun generated bright scanning transmission electron microscopy images of a carbon nanotube at 30 kV.

Cho, Boklae; Shigeru, Kokubo [Hitachi High-Technologies Corporation 882, Ichige, Hitachinaka-shi, Ibaraki-ken 312-8504 (Japan); Oshima, Chuhei [Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26 Nishi-Waseda, Shinjuku-ku, Tokyo 169-0072 (Japan)

2013-01-15T23:59:59.000Z

168

High-performance commercial building facades  

SciTech Connect (OSTI)

This study focuses on advanced building facades that use daylighting, sun control, ventilation systems, and dynamic systems. A quick perusal of the leading architectural magazines, or a discussion in most architectural firms today will eventually lead to mention of some of the innovative new buildings that are being constructed with all-glass facades. Most of these buildings are appearing in Europe, although interestingly U.S. A/E firms often have a leading role in their design. This ''emerging technology'' of heavily glazed fagades is often associated with buildings whose design goals include energy efficiency, sustainability, and a ''green'' image. While there are a number of new books on the subject with impressive photos and drawings, there is little critical examination of the actual performance of such buildings, and a generally poor understanding as to whether they achieve their performance goals, or even what those goals might be. Even if the building ''works'' it is often dangerous to take a design solution from one climate and location and transport it to a new one without a good causal understanding of how the systems work. In addition, there is a wide range of existing and emerging glazing and fenestration technologies in use in these buildings, many of which break new ground with respect to innovative structural use of glass. It is unclear as to how well many of these designs would work as currently formulated in California locations dominated by intense sunlight and seismic events. Finally, the costs of these systems are higher than normal facades, but claims of energy and productivity savings are used to justify some of them. Once again these claims, while plausible, are largely unsupported. There have been major advances in glazing and facade technology over the past 30 years and we expect to see continued innovation and product development. It is critical in this process to be able to understand which performance goals are being met by current technology and design solutions, and which ones need further development and refinement. The primary goal of this study is to clarify the state-of-the-art of the performance of advanced building facades so that California building owners and designers can make informed decisions as to the value of these building concepts in meeting design goals for energy efficiency, ventilation, productivity and sustainability.

Lee, Eleanor; Selkowitz, Stephen; Bazjanac, Vladimir; Inkarojrit, Vorapat; Kohler, Christian

2002-06-01T23:59:59.000Z

169

Sandia National Laboratories: high-performance computing  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia,evaluatingfull moduleresourcesperform-ance computing

170

Compiler-based Memory Optimizations for High Performance Computing Systems.  

E-Print Network [OSTI]

??Parallelism has always been the primary method to achieve higher performance. To advance the computational capabilities of state-of-the-art high performance computing systems, we continue to… (more)

Kultursay, Emre

2013-01-01T23:59:59.000Z

171

High Performance Information Filtering on Many-core Processors  

E-Print Network [OSTI]

-purpose usage as application-coprocessors and are now widely used in high performance computing due to exceptional floating-point performance, memory bandwidth and power efficiency. GPU manufacturers have released API’s and programming models for application...

Tripathy, Aalap

2013-12-06T23:59:59.000Z

172

High performance ˛?˛Cf plasma desorption mass spectrometry  

E-Print Network [OSTI]

ABSTRACT . ACKNOWLEDGEMENT TABLE OF CONTENTS . tv LIST OF TABLES LIST OF FIGURES C~R I. INTRODUCTION tx xt A. A General Overview . 1. Particle-Induced Desorption 2. The Application of Cf PDMS in Analytical Chemistry 3. Time-of-Flight Mass... INTRODUCTION The method of 'Cf plasma desorption mass spectrometry (PDMS) is a mass spectrometric method pioneered in 1974 by Macfarlane and co-workers (1) at Texas A&M University. This method uses fission fragments (highly energetic atomic ions...

McIntire, Thomas Shane

1991-01-01T23:59:59.000Z

173

High Performance Thermal Interface Technology Overview  

E-Print Network [OSTI]

An overview on recent developments in thermal interfaces is given with a focus on a novel thermal interface technology that allows the formation of 2-3 times thinner bondlines with strongly improved thermal properties at lower assembly pressures. This is achieved using nested hierarchical surface channels to control the particle stacking with highly particle-filled materials. Reliability testing with thermal cycling has also demonstrated a decrease in thermal resistance after extended times with longer overall lifetime compared to a flat interface.

R. Linderman; T. Brunschwiler; B. Smith; B. Michel

2008-01-07T23:59:59.000Z

174

High Performance Thermal Interface Technology Overview  

E-Print Network [OSTI]

An overview on recent developments in thermal interfaces is given with a focus on a novel thermal interface technology that allows the formation of 2-3 times thinner bondlines with strongly improved thermal properties at lower assembly pressures. This is achieved using nested hierarchical surface channels to control the particle stacking with highly particle-filled materials. Reliability testing with thermal cycling has also demonstrated a decrease in thermal resistance after extended times with longer overall lifetime compared to a flat interface.

Linderman, R; Smith, B; Michel, B

2008-01-01T23:59:59.000Z

175

Overcoming Processing Cost Barriers of High-Performance Lithium...  

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

Office Merit Review 2014: Overcoming Processing Cost Barriers of High-Performance Lithium-Ion Battery Electrodes Vehicle Technologies Office Merit Review 2014:...

176

Memorandum of American High-Performance Buildings Coalition DOE...  

Energy Savers [EERE]

Leadership in High Performance and Sustainable Buildings Memorandum of Understanding Green Building Certification Systems Requirement for New Federal Buildings and Major...

177

Frontiers in Planetary and Stellar Magnetism through High-Performance...  

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

Hwang, project co-PI Frontiers in Planetary and Stellar Magnetism through High-Performance Computing PI Name: Jonathan Aurnou PI Email: aurnou@ucla.edu Institution: University...

178

Stretchable and High-Performance Supercapacitors with Crumpled Graphene Papers  

E-Print Network [OSTI]

Fabrication of unconventional energy storage devices with high stretchability and performance is challenging, but critical to practical operations of fully power-independent stretchable electronics. While supercapacitors ...

Zang, Jianfeng

179

High-Performance Home Technologies: Solar Thermal & Photovoltaic...  

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

in each of the volumes. High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems More Documents & Publications Building America Whole-House Solutions for...

180

Energy Design Guidelines for High Performance Schools: Hot and...  

Energy Savers [EERE]

Climates Energy Design Guidelines for High Performance Schools: Hot and Humid Climates School districts around the country are finding that the smart energy choices can help them...

Note: This page contains sample records for the topic "high performance cold" 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

64 _____________________________________Math & Computational Sciences Division High Performance Computing and Visualization  

E-Print Network [OSTI]

64 _____________________________________Math & Computational Sciences Division High Performance Computing and Visualization Research and Development in Visual Analysis Judith Devaney Terrence Griffin John

Perkins, Richard A.

182

Accelerating Predictive Simulation of IC Engines with High Performance...  

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

IC engines with high performance computing (ACE017) This presentation does not contain any proprietary, confidential, or otherwise restricted information K. Dean Edwards, C....

183

DOE Announces Webinars on High Performance Space Conditioning...  

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

18: Live Webinar on High Performance Space Conditioning Systems, Part II Webinar Sponsor: Building Technologies Office The Energy Department will present a live webinar titled...

184

A Review of High Occupancy Vehicle (HOV) Lane Performance and...  

Open Energy Info (EERE)

Occupancy Vehicle (HOV) Lane Performance and Policy Options in the United States: Final Report Jump to: navigation, search Tool Summary LAUNCH TOOL Name: A Review of High Occupancy...

185

SEE Action Series: High Performance Leasing Strategies for State...  

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

rating, and disclosure; retro- commissioning; high-performance leasing; strategic energy management programs * Model policy design guides: benchmarking, rating, and disclosure;...

186

Effect of memory access and caching on high performance computing.  

E-Print Network [OSTI]

??High-performance computing is often limited by memory access. As speeds increase, processors are often waiting on data transfers to and from memory. Classic memory controllers… (more)

Groening, James

2012-01-01T23:59:59.000Z

187

High performance Zintl phase TE materials with embedded nanoparticles...  

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

Materials with Embedded Particles Thermoelectrics Partnership: High Performance Thermoelectric Waste Heat Recovery System Based on Zintl Phase Materials with Embedded Nanoparticles...

188

High-Performance with Solar Electric Reduced Peak Demand: Premier...  

Energy Savers [EERE]

energy systems with high-performance homes and showing how they align with utility peak-demand reduction interests. In addition to substantial energy savings, solar electric home...

189

Overcoming Processing Cost Barriers of High-Performance Lithium...  

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

Cost Barriers of High-Performance Lithium-Ion Battery Electrodes 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer...

190

Affordable High Performance in Production Homes: Artistic Homes...  

Energy Savers [EERE]

Homes, Albuquerque, NM - Building America Top Innovation Photo of a home in New Mexico. Many builders remain resistant to adopting high-performance innovations based on...

191

High Performance Sustainable Building Design RM  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG | Department ofHTS Cable Projects HTSSeparationHelping to Finance3High

192

High Performance Computing Richard F. BARRETT  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in the Madison SymmetricHigh Carbon|1-3, mthe Role of

193

DOE High Performance Computing Operational Review  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to UserProduct: Crude OilPublicDNALost PasswordTechnicalHPCOR DOE High

194

High-Performance Computing at Los  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in thein the AssemblyHigh-Order Membrane

195

High Performance Computing Data Center Metering Protocol  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground Hawaii CleanHeatinHighMetal RemovalcostLouisiana

196

High Performance Valve Materials | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground Hawaii CleanHeatinHighMetalEnergyMaterials

197

Highly Integrated, High Performance, Imaging Detector Systems Using  

E-Print Network [OSTI]

performance - Susceptible to bulk radiation damage so radiation"soft" · CCDs are large capacitance devices so.3 volt) operation - Fast, digital readout - More radiation hard than CCDs · Strong commercial, biomedical Miniaturized imaging instruments Space telescopes - Spacecraft Star trackers Optical navigation Optical comm

Fossum, Eric R.

198

High Performance Interconnect System Design for Future Chip Multiprocessors  

E-Print Network [OSTI]

constraints of power and area, and provide ultra low latencies and high throughput. In this research, we explore different techniques to design high performance NOC. First, existing NOCs mostly use Dimension Order Routing (DOR) to determine the route taken...

Wang, Lei

2013-05-02T23:59:59.000Z

199

High-Performance Energy Applications and Systems  

SciTech Connect (OSTI)

The Paradyn project has a history of developing algorithms, techniques, and software that push the cutting edge of tool technology for high-end computing systems. Under this funding, we are working on a three-year agenda to make substantial new advances in support of new and emerging Petascale systems. The overall goal for this work is to address the steady increase in complexity of these petascale systems. Our work covers two key areas: (1) The analysis, instrumentation and control of binary programs. Work in this area falls under the general framework of the Dyninst API tool kits. (2) Infrastructure for building tools and applications at extreme scale. Work in this area falls under the general framework of the MRNet scalability framework. Note that work done under this funding is closely related to work done under a contemporaneous grant, “Foundational Tools for Petascale Computing”, SC0003922/FG02-10ER25940, UW PRJ27NU.

Miller, Barton

2014-05-19T23:59:59.000Z

200

Fundamental properties of monolithic bentonite buffer material formed by cold isostatic pressing for high-level radioactive waste repository  

SciTech Connect (OSTI)

The methods of fabrication, handling, and emplacement of engineered barriers used in a deep geological repository for high level radioactive waste should be planned as simply as possible from the engineering and economic viewpoints. Therefore, a new concept of a monolithic buffer material around a waste package have been proposed instead of the conventional concept with the use of small blocks, which would decrease the cost for buffer material. The monolithic buffer material is composed of two parts of highly compacted bentonite, a cup type body and a cover. As the forming method of the monolithic buffer material, compaction by the cold isostatic pressing process (CIP) has been employed. In this study, monolithic bentonite bodies with the diameter of about 333 mm and the height of about 455 mm (corresponding to the approx. 1/5 scale for the Japanese reference concept) were made by the CIP of bentonite powder. The dry densities: {rho}d of the bodies as a whole were measured and the small samples were cut from several locations to investigate the density distribution. The swelling pressure and hydraulic conductivity as function of the monolithic body density for CIP-formed specimens were also measured. High density ({rho}d: 1.4--2.0 Mg/m{sup 3}) and homogeneous monolithic bodies were formed by the CIP. The measured results of the swelling pressure (3--15 MPa) and hydraulic conductivity (0.5--1.4 x 10{sup {minus}13} m/s) of the specimens were almost the same as those for the uniaxial compacted bentonite in the literature. It is shown that the vacuum hoist system is an applicable handling method for emplacement of the monolithic bentonite.

Kawakami, S.; Yamanaka, Y.; Kato, K.; Asano, H.; Ueda, H.

1999-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "high performance cold" 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

Hot-and-Cold: Using Criticality in the Design of Energy-Efficient Caches Rajeev Balasubramonian  

E-Print Network [OSTI]

Hot-and-Cold: Using Criticality in the Design of Energy-Efficient Caches Rajeev Balasubramonian is designed to be highly energy-efficient (consuming 20% of the dynamic and leakage energy of the hot cache not in the critical path are serviced by a lower energy (and lower performance (cold)) cache bank. The resulting

Dwarkadas, Sandhya

202

Cold flow scaleup facility experimental results and comparison of performance at different bed configurations, Volume 1: Topical report, January--December 1983  

SciTech Connect (OSTI)

KRW Energy Systems Inc. is engaged in the continuing development of a pressurized, fluidized-bed gasification process at its Waltz Mill Site in Madison, Pennsylvania. The overall objective of the program is to demonstrate the viability of the KRW process for the environmentally acceptable production of low- and medium-BTU fuel gas from a variety of fossilized carbonaceous feedstocks for electric power generation, synthetic natural gas, chemical feedstocks and industrial fuels. This report presents analysis of the Cold Flow Scaleup Facility (CFSF) operations. Included is work performed on the 3-meter CFSF model using four different bed configurations to check correlations and scale-up criteria developed from studies conducted in small-scale cold flow units and those available in open literature. The 3-meter model permits full front-face viewing of the fluidized bed through a transparent plastic window and with its instrumentation allows detailed studies of jet behavior, bubble dynamics, solid circulation, gas mixing, and related phenomena important to the design of a large-scale gasifier. 87 refs., 95 figs., 56 tabs.

Schmidt, D.K.; Yang, W.C.; Ettehadieh, B.; Anestis, T.C.; Haldipur, G.B.; Kettering, E.; O'Rourke, R.E.; Weigle, D.

1988-12-01T23:59:59.000Z

203

High Performance Walls in Hot-Dry Climates  

SciTech Connect (OSTI)

High performance walls represent a high priority measure for moving the next generation of new homes to the Zero Net Energy performance level. The primary goal in improving wall thermal performance revolves around increasing the wall framing from 2x4 to 2x6, adding more cavity and exterior rigid insulation, achieving insulation installation criteria meeting ENERGY STAR's thermal bypass checklist, and reducing the amount of wood penetrating the wall cavity.

Hoeschele, M.; Springer, D.; Dakin, B.; German, A.

2015-01-01T23:59:59.000Z

204

Halide and Oxy-Halide Eutectic Systems for High Performance High...  

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

High Performance High Temperature Heat Transfer Fluids Award Number: DE-FOA-0005942 Report Date: 15 January 2013 PI: Peiwen (Perry) Li * Numerical simulation and combined DSCTGA...

205

Achieving "Green" Concrete Through The Use Of High Performance FiberThe Use Of High Performance Fiber  

E-Print Network [OSTI]

Achieving "Green" Concrete Through The Use Of High Performance FiberThe Use Of High Performance Fiber Reinforced Concrete ShihShih--Ho Chao,Ho Chao, Ph.DPh.D Assistant Professor, Department of Civil, 2008 #12;What is D rable Concrete?What is D rable Concrete?What is Durable Concrete?What is Durable

Chao, Shih-Ho

206

Cold moderators at ORNL  

SciTech Connect (OSTI)

The Advanced Neutron Source (ANS) cold moderators were not an 'Oak Ridge first', but would have been the largest both physically and in terms of cold neutron flux. Two cold moderators were planned each 410 mm in diameter and containing about 30L of liquid deuterium. They were to be completely independent of each other. A modular system design was used to provide greater reliability and serviceability. When the ANS was terminated, up–grading of the resident High Flux Isotope Reactor (HFIR) was examined and an initial study was made into the feasibility of adding a cold source. Because the ANS design was modular, it was possible to use many identical design features. Sub-cooled liquid at 4 bar abs was initially chosen for the HFIR design concept, but this was subsequently changed to 15 bar abs to operate above the critical pressure. As in the ANS, the hydrogen will operate at a constant pressure throughout the temperature range and a completely closed loop with secondary containment was adopted. The heat load of 2 kW made the heat flux comparable with that of the ANS. Subsequent studies into the construction of cryogenic moderators for the proposed new Synchrotron Neutron source indicated that again many of the same design concepts could be used. By connecting the two cold sources together in series, the total heat load of 2 kW is very close to that of the HFIR allowing a very similar supercritical hydrogen system to be configured. The two hydrogen moderators of the SNS provide a comparable heat load to the HFIR moderator. It is subsequently planned to connect the two in series and operate from a single cold loop system, once again using supercritical hydrogen. The spallation source also provided an opportunity to re-examine a cold pellet solid methane moderator operating at 20K.

Lucas, A. T.

1997-09-01T23:59:59.000Z

207

Halide and Oxy-halide Eutectic Systems for High Performance High...  

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

Q2 Halide and Oxy-Halide Eutectic Systems for High Performance High Temperature Heat Transfer Fluids Corrosion in Very High-Temperature Molten Salt for Next Generation CSP Systems...

208

Energy Performance and Comfort Level in High Rise and Highly Glazed Office Buildings  

E-Print Network [OSTI]

Thermal and visual comfort in buildings play a significant role on occupants' performance but on the other hand achieving energy savings and high comfort levels can be a quite difficult task especially in high rise buildings with highly glazed...

Bayraktar, M.; Perino, M.; Yilmaz, A. Z.

2010-01-01T23:59:59.000Z

209

HPGMG 1.0: A Benchmark for Ranking High Performance Computing Systems  

E-Print Network [OSTI]

for Ranking High Performance Computing Systems Mark F. Adamsmetric for ranking high performance computing systems. HPLmetric for ranking high performance computing systems. When

Adams, Mark

2014-01-01T23:59:59.000Z

210

Coordinated resource management for guaranteed high performance and efficient utilization in Lambda-Grids  

E-Print Network [OSTI]

Journal of High Performance Computing Applications, AugustConference on High Performance Computing and Communication (Conference on High Performance Computing and Networking (SC’

Taesombut, Nut

2007-01-01T23:59:59.000Z

211

On the user-scheduler relationship in high-performance computing  

E-Print Network [OSTI]

1.1. High-Performance Computing . . . . . . . . 1.2. ProblemJournal of High Performance Computing Applications, 19(4):IEEE Conference on High Performance Computing, Networking,

Lee, Cynthia Bailey

2009-01-01T23:59:59.000Z

212

NERSC 2011: High Performance Computing Facility Operational Assessment for the National Energy Research Scientific Computing Center  

E-Print Network [OSTI]

NERSC 2011 High Performance Computing Facility Operationalby providing high-performance computing, information, data,s deep knowledge of high performance computing to overcome

Antypas, Katie

2013-01-01T23:59:59.000Z

213

E-Print Network 3.0 - advanced high performance Sample Search...  

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

results for: advanced high performance Page: << < 1 2 3 4 5 > >> 1 Army High Performance Computing Research Center Summary: Army High Performance Computing Research Center...

214

High-Performance Organic Light-Emitting Diodes Using ITO  

E-Print Network [OSTI]

High-Performance Organic Light-Emitting Diodes Using ITO Anodes Grown on Plastic by Room,* Mark E. Madsen, Antonio DiVenere, and Seng-Tiong Ho Organic light-emitting diodes (OLEDs) fabricated

Ho, Seng-Tiong

215

Unravelling the Performance Degradation Mechanisms in High-voltage...  

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

Unravelling the Performance Degradation Mechanisms in High-voltage Lithium-ion Battery Composite Oxide Electrodes Apr 11 2014 02:00 PM - 03:00 PM Debasish Mohanty, ORNL, Oak Ridge...

216

Conductive Rigid Skeleton Supported Silicon as High-Performance...  

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

and technologies. Citation: Chen X, X Li, F Ding, W Xu, J Xiao, Y Cao, P Meduri, J Liu, GL Graff, and J Zhang.2012."Conductive Rigid Skeleton Supported Silicon as High-Performance...

217

Energy Star Helps Manufacturers To Achieve High Energy Performance  

E-Print Network [OSTI]

From personal electronic devices to homes and office buildings, ENERGY STAR® is a recognized symbol of high quality energy performance which enables consumers, home buyers, and businesses to make informed energy decisions. Now, the U...

Dutrow, E.; Hicks, T.

218

Design of wind turbines with Ultra-High Performance Concrete  

E-Print Network [OSTI]

Ultra-High Performance Concrete (UHPC) has proven an asset for bridge design as it significantly reduces costs. However, UHPC has not been applied yet to wind turbine technology. Design codes do not propose any recommendations ...

Jammes, François-Xavier

2009-01-01T23:59:59.000Z

219

Anne Arundel County- High Performance Dwelling Property Tax Credit  

Broader source: Energy.gov [DOE]

The state of Maryland permits local governments (Md Code: Property Tax § 9-242) to offer property tax credits for high performance buildings if they choose to do so. In October 2010 Anne Arundel...

220

High Performance Leasing Strategies for State and Local Governments  

Broader source: Energy.gov [DOE]

Presentation for the SEE Action Series: High Performance Leasing Strategies for State and Local Governments webinar, presented on January 26, 2013 as part of the U.S. Department of Energy's Technical Assistance Program (TAP).

Note: This page contains sample records for the topic "high performance cold" 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

High performance CMOS integrated circuits for optical receivers  

E-Print Network [OSTI]

Prasad Enjeti Head of Department, Costas Georghiades December 2006 Major Subject: Electrical Engineering iii ABSTRACT High Performance CMOS Integrated Circuits for Optical Receivers. (December 2006) MohammadReza SamadiBoroujeni, B...

SamadiBoroujeni, MohammadReza

2009-05-15T23:59:59.000Z

222

Accelerating Predictive Simulation of IC Engines with High Performance...  

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

IC engines with high performance computing (ACE017) K. Dean Edwards (PI), C. Stuart Daw, Wael R. Elwasif, Charles E. A. Finney, Sreekanth Pannala, Miroslav K. Stoyanov, Robert M....

223

High-Performance Building Requirements for State Buildings  

Broader source: Energy.gov [DOE]

In March 2008, South Dakota enacted legislation mandating the use of high-performance building standards in new state construction and renovations. This policy requires that new and renovated state...

224

High Performance Building Standards in New State Construction  

Broader source: Energy.gov [DOE]

In January 2008, New Jersey enacted legislation mandating the use of high performance green building standards in new state construction. The standard requires that new buildings larger than 15...

225

Ductility enhancement of high performance cementitious composites and structures  

E-Print Network [OSTI]

High performance cementitious composites (HP2C) are a new generation of fiber reinforced cementitious composites (FRCC) with substantial improvements in mechanical behavior. The most important development in these HP2C ...

Chuang, Eugene (Eugene Yu), 1975-

2002-01-01T23:59:59.000Z

226

Circuits for high-performance low-power VLSI logic  

E-Print Network [OSTI]

The demands of future computing, as well as the challenges of nanometer-era VLSI design, require new digital logic techniques and styles that are simultaneously high performance, energy efficient, and robust to noise and ...

Ma, Albert

2006-01-01T23:59:59.000Z

227

Howard County- High Performance and Green Building Property Tax Credits  

Broader source: Energy.gov [DOE]

The state of Maryland permits local governments (Md Code: Property Tax § 9-242) to offer property tax credits for high performance buildings and energy conservation devices (Md Code: Property Tax §...

228

Commissioning High Performance Residences in Hot, Humid Climates  

E-Print Network [OSTI]

Since 2001, the authors have engaged several builders in the Gainesville, FL area to build over 500 high performance new energy efficient homes in multiple sub divisions. The builders keep building to increased levels of energy efficiency. Each home...

Fonorow, K.; Chandra, S.; McIlvaine, J.; Colon, C.

2007-01-01T23:59:59.000Z

229

The High Performance Computing Juggling Act | Argonne Leadership...  

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

The High Performance Computing Juggling Act Event Sponsor: Mathematics and Computing Science Seminar Start Date: Feb 17 2015 - 11:00am BuildingRoom: Building 240Room 1404-1405...

230

Wood-Fiber/High-Density-Polyethylene Composites: Coupling Agent Performance  

E-Print Network [OSTI]

Wood-Fiber/High-Density-Polyethylene Composites: Coupling Agent Performance John Z. Lu,1 Qinglin Wu structure. As a coupling agent, mal- eated polyethylene (MAPE) had a better performance in WPC than oxidized polyethylene (OPE) and pure polyeth- ylene (PPE) because of its stronger interfacial bonding. A combination

231

A case study of industrial building energy performance in a cold climate region in a developing country  

E-Print Network [OSTI]

countries such as China have excessively high energy consumption, and the portion used by HVAC systems headings: Industrial facilities; Energy consumption; Air leakage; Condensation; Insulation; Temperature primary energy in China every year since 2006 (Xu, 2013; Wang et al., 2010). About50-55% of the energy

Chen, Qingyan "Yan"

232

Nitrogen modification of highly porous carbon for improved supercapacitor performance  

E-Print Network [OSTI]

Nitrogen modification of highly porous carbon for improved supercapacitor performance Stephanie L for supercapacitor applications. Surface modification increases the amount of nitrogen by four times when compared elements in highly porous carbon used for electric double-layer supercapacitors.1 These elements modify

Cao, Guozhong

233

Load Balancing using High Performance Computing Cluster Programming  

E-Print Network [OSTI]

High-performance computing has created a new approach to science. Modeling is now a viable and respected alternative to the more traditional experiential and theoretical approaches. High performance is a key issue in data mining or in image rendering. Traditional high performance clusters have proved their worth in a variety of uses from predicting the weather to industrial design, from molecular dynamics to astronomical modeling. A multicomputer configuration, or cluster, is a group of computers that work together. A cluster has three basic elements—a collection of individual computers, a network connecting those computers, and software that enables a computer to share work among the other computers via the network. Clusters are also playing a greater role in business. Advances in clustering technology have led to high-availability

unknown authors

234

Utilize Cementitious High Carbon Fly Ash (CHCFA) to Stabilize Cold In-Place Recycled (CIR) Asphalt Pavement as Base Coarse  

SciTech Connect (OSTI)

The purpose of this study was to evaluate the performance of cementitious high carbon fly ash (CHCFA) stabilized recycled asphalt pavement as a base course material in a real world setting. Three test road cells were built at MnROAD facility in Minnesota. These cells have the same asphalt surface layers, subbases, and subgrades, but three different base courses: conventional crushed aggregates, untreated recycled pavement materials (RPM), and CHCFA stabilized RPM materials. During and after the construction of the three cells, laboratory and field tests were carried out to characterize the material properties. The test results were used in the mechanistic-empirical pavement design guide (MEPDG) to predict the pavement performance. Based on the performance prediction, the life cycle analyses of cost, energy consumption, and greenhouse gasses were performed. The leaching impacts of these three types of base materials were compared. The laboratory and field tests showed that fly ash stabilized RPM had higher modulus than crushed aggregate and RPM did. Based on the MEPDG performance prediction, the service life of the Cell 79 containing fly ash stabilized RPM, is 23.5 years, which is about twice the service life (11 years) of the Cell 77 with RPM base, and about three times the service life (7.5 years) of the Cell 78 with crushed aggregate base. The life cycle analysis indicated that the usage of the fly ash stabilized RPM as the base of the flexible pavement can significantly reduce the life cycle cost, the energy consumption, the greenhouse gases emission. Concentrations of many trace elements, particularly those with relatively low water quality standards, diminish over time as water flows through the pavement profile. For many elements, concentrations below US water drinking water quality standards are attained at the bottom of the pavement profile within 2-4 pore volumes of flow.

Wen, Haifang; Li, Xiaojun; Edil, Tuncer; O'Donnell, Jonathan; Danda, Swapna

2011-02-05T23:59:59.000Z

235

High-Quality Microlenses and High-Performance Systems For Optical Microelectromechanical Systems  

E-Print Network [OSTI]

High-Quality Microlenses and High-Performance Systems For Optical Microelectromechanical Systems Paper Detailing Opportunities Abstract: Major opportunities exist for optical microelectromechanical systems (MEMS) and, despite recent economic setbacks for companies working in the field, concentrated

O'Brien, James F.

236

High voltage stability performance of a gamma ray detection device  

SciTech Connect (OSTI)

An industrial grade digital radiation survey meter device is currently being developed at Malaysian Nuclear Agency. This device used a cylindrical type Geiger Mueller (GM) which acts as a detector. GM detector operates at relatively high direct current voltages depend on the type of GM tube. This thin/thick walled cylindrical type of GM tube operates at 450-650 volts range. Proper value and stability performance of high voltage are important parameters to ensure that this device give a reliable radiation dose measurement. This paper will present an assessment of the stability and performance of the high voltage supply for radiation detector. The assessment is performed using System Identification tools box in MATLAB and mathematical statistics.

Abdullah, Nor Arymaswati; Lombigit, Lojius; Rahman, Nur Aira Abd [Technical Support Division, Malaysian Nuclear Agency, 43000 Kajang, Selangor (Malaysia)

2014-02-12T23:59:59.000Z

237

SIMS analysis of high-performance accelerator niobium  

SciTech Connect (OSTI)

Niobium is used to fabricate superconducting radio frequency accelerator modules because of its high critical temperature, high critical magnetic field, and easy formability. Recent experiments have shown a very significant improvement in performance (over 100%) after a high-temperature bake at 1400 degrees C for 3h. SIMS analysis of this material showed the oxygen profile was significantly deeper than the native oxide with a shape that is indicative of diffusion. Positive secondary ion mass spectra showed the presence of Ti with a depth profile similar to that of O. It is suspected that Ti is associated with the performance improvement. The source of Ti contamination in the anneal furnace has been identified, and a new furnace was constructed without Ti. Initial results from the new furnace do not show the yield improvement. Further analyses should determine the relationship of Ti to cavity performance.

Maheshwari, P. [NCSU; Stevie, F. A. [NCSU; Myneni, Ganapati Rao [JLAB; Rigsbee, J, M. [NCSU; Dhakal, Pashupati [JLAB; Ciovati, Gianluigi [JLAB; Griffis, D. P. [NCSU

2014-11-01T23:59:59.000Z

238

High temperature performance of scrap tire rubber modified asphalt concrete  

SciTech Connect (OSTI)

Wheel track rutting tests on mixes modified with 30 mesh, 80 mesh, and very fine colloidal crumb rubber particles show that a very significant improvement in performance occurs with a reduction in the rubber particle size. The SHRP binder test for rutting, which was originally developed for homogeneous systems only, does not predict the performance improvement for smaller rubber particles. If these new scrap rubber binder systems are to be used in pavements then rutting tests on the asphalt-aggregate mixture should be conducted in order to accurately predict high temperature performance.

Coomarasamy, A. [Ministry of Transportation, Downsview, Ontario (Canada); Manolis, S.; Hesp, S. [Queen`s Univ., Kingston, Ontario (Canada)

1996-12-31T23:59:59.000Z

239

High performance computing and communications: FY 1997 implementation plan  

SciTech Connect (OSTI)

The High Performance Computing and Communications (HPCC) Program was formally authorized by passage, with bipartisan support, of the High-Performance Computing Act of 1991, signed on December 9, 1991. The original Program, in which eight Federal agencies participated, has now grown to twelve agencies. This Plan provides a detailed description of the agencies` FY 1996 HPCC accomplishments and FY 1997 HPCC plans. Section 3 of this Plan provides an overview of the HPCC Program. Section 4 contains more detailed definitions of the Program Component Areas, with an emphasis on the overall directions and milestones planned for each PCA. Appendix A provides a detailed look at HPCC Program activities within each agency.

NONE

1996-12-01T23:59:59.000Z

240

WARPP -A Toolkit for Simulating High-Performance Parallel Scientific Codes  

E-Print Network [OSTI]

the High Performance Computing (HPC) community, including increasing levels of con- currency (threads, Simulation Keywords Application Performance Modelling, Simulation, High Performance Computing 1. INTRODUCTION

Jarvis, Stephen

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


241

Friday, May 21, 2010 High-Performance Electronics without the High Price  

E-Print Network [OSTI]

materials. Researchers have used the method to make high-performance image sensors, transistors, and solar exotic semiconductors brings down the cost of high- performance solar cells and microchips. By Katherine Bourzac Compared to silicon, semiconductors like gallium arsenide can be made into solar cells

Rogers, John A.

242

Motor: A Virtual Machine for High Performance Computing Wojtek Goscinski and David Abramson  

E-Print Network [OSTI]

Motor: A Virtual Machine for High Performance Computing Wojtek Goscinski and David Abramson {wojtek environments do not provide the necessary high performance computing abstractions required by e- Scientists, whilst retaining strong message passing performance. 1. Introduction High performance computing (HPC

Abramson, David

243

Optimizing Cooling Tower Performance Refrigeration Systems, Chemical Plants, and Power Plants All Have A Resource Quietly Awaiting Exploitation-Cold Water!!  

E-Print Network [OSTI]

requirements before a cooling tower is purchased. This relates to the volume of circulating water, hot water temperature on the tower, cold water discharge, and wet bulb temperature (consisting of ambient temperature and relative humidity). After the tower...

Burger, R.

244

Health Care Reform Challenge: Creating a High Performance Healthcare System  

E-Print Network [OSTI]

Health Care Reform Challenge: Creating a High Performance Healthcare System Tom Simmer, MD Chief;The Challenge of Reform: Accountable Care Organizations (ACO) · ACO's are provider organizations health care delivery Organized Systems of Care Population focus for primary care physicians, hospitals

Finley Jr., Russell L.

245

High-Performance Buildings – Value, Messaging, Financial and Policy Mechanisms  

SciTech Connect (OSTI)

At the request of the Pacific Northwest National Laboratory, an in-depth analysis of the rapidly evolving state of real estate investments, high-performance building technology, and interest in efficiency was conducted by HaydenTanner, LLC, for the U.S. Department of Energy (DOE) Building Technologies Program. The analysis objectives were • to evaluate the link between high-performance buildings and their market value • to identify core messaging to motivate owners, investors, financiers, and others in the real estate sector to appropriately value and deploy high-performance strategies and technologies across new and existing buildings • to summarize financial mechanisms that facilitate increased investment in these buildings. To meet these objectives, work consisted of a literature review of relevant writings, examination of existing and emergent financial and policy mechanisms, interviews with industry stakeholders, and an evaluation of the value implications through financial modeling. This report documents the analysis methodology and findings, conclusion and recommendations. Its intent is to support and inform the DOE Building Technologies Program on policy and program planning for the financing of high-performance new buildings and building retrofit projects.

McCabe, Molly

2011-02-22T23:59:59.000Z

246

Biofuels' Time of Transition Achieving high performance in a world  

E-Print Network [OSTI]

Biofuels' Time of Transition Achieving high performance in a world of increasing fuel diversity #12;2 Table of contents #12;3 Introduction Up close: Highlights of Accenture's first biofuels study An evolving biofuels industry 1 Consumer influence Guest commentary on land-use change In focus: The food

Kammen, Daniel M.

247

Toward Codesign in High Performance Computing Systems - 06386705...  

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

s f o r t h i s w o r k . 7 . R E F E R E N C E S 1 J . A n g e t a l . High Performance Computing: From Grids and Clouds to Exascale, c h a p t e r E x a s c a l e C o m p u...

248

System-Level Virtualization for High Performance Computing Geoffroy Vallee  

E-Print Network [OSTI]

System-Level Virtualization for High Performance Computing Geoffroy Vall´ee Oak Ridge National Laboratory Oak Ridge, TN 37830, USA valleegr@ornl.gov Thomas Naughton Oak Ridge National Laboratory Oak Ridge, TN 37830, USA naughtont@ornl.gov Christian Engelmann Oak Ridge National Laboratory Oak Ridge, TN

Engelmann, Christian

249

High Performance Commercial Building Systems William L. Carroll  

E-Print Network [OSTI]

Efficiency and Renewable Energy, Building Technologies Program of the U.S. Department of Energy underHigh Performance Commercial Building Systems William L. Carroll Ernest Orlando Lawrence Berkeley.2 ­ Retrofit Tools Task 2 HPBCS E2P2.2T3 LBNL - 57775 California Energy Commission Public Interest Energy

250

High Performance Circuits for Power Management and Millimeter Wave Applications  

E-Print Network [OSTI]

to achieve the required goals in terms of small silicon area and power consumption while at the same time achieve high performance. Four key building blocks in power management and a switchable harmonic mixer with pre-amplifier and poly-phase generator as a...

Amer, Ahmed 1979-

2012-01-23T23:59:59.000Z

251

HighPerformance Library Software for QR Factorization  

E-Print Network [OSTI]

factorization. Using recursion leads us to a natural way to choose the k­way aggregating Householder transform604e node. Keywords: Serial and parallel library software, QR factorization, recur­ sion, register utilize the memory hierarchy is the key to high performance on uniprocessors as well as on SMP systems

Elmroth, Erik

252

Highlighting High Performance: Blackstone Valley Regional Vocational Technical High School; Upton, Massachusetts  

SciTech Connect (OSTI)

This brochure describes the key high-performance building features of the Blackstone Valley High School. The brochure was paid for by the Massachusetts Technology Collaborative as part of their Green Schools Initiative. High-performance features described are daylighting and energy-efficient lighting, indoor air quality, solar energy, building envelope, heating and cooling systems, and water conservation. Energy cost savings are also discussed.

Not Available

2006-10-01T23:59:59.000Z

253

A secure communications infrastructure for high-performance distributed computing  

SciTech Connect (OSTI)

Applications that use high-speed networks to connect geographically distributed supercomputers, databases, and scientific instruments may operate over open networks and access valuable resources. Hence, they can require mechanisms for ensuring integrity and confidentially of communications and for authenticating both users and resources. Security solutions developed for traditional client-server applications do not provide direct support for the program structures, programming tools, and performance requirements encountered in these applications. The authors address these requirements via a security-enhanced version of the Nexus communication library; which they use to provide secure versions of parallel libraries and languages, including the Message Passing Interface. These tools permit a fine degree of control over what, where, and when security mechanisms are applied. In particular, a single application can mix secure and nonsecure communication, allowing the programmer to make fine-grained security/performance tradeoffs. The authors present performance results that quantify the performance of their infrastructure.

Foster, I.; Koenig, G.; Tuecke, S. [and others

1997-08-01T23:59:59.000Z

254

Graph 500 Performance on a Distributed-Memory Cluster REU Site: Interdisciplinary Program in High Performance Computing  

E-Print Network [OSTI]

traditional performance benchmarks for high- performance computers measure the speed of arithmetic operations benchmark is intended to rank high-performance computers based on speed of memory retrieval-memory cluster tara in the UMBC High Performance Computing Facility (www.umbc.edu/hpcf). The cluster tara has 82

Gobbert, Matthias K.

255

MSIM 795/895:MSIM 795/895: HIGH PERFORMANCE COMPUTING AND SIMULATIONHIGH PERFORMANCE COMPUTING AND SIMULATION  

E-Print Network [OSTI]

MSIM 795/895:MSIM 795/895: HIGH PERFORMANCE COMPUTING AND SIMULATIONHIGH PERFORMANCE COMPUTING://eng.odu.edu/msve COURSE DESCRIPTION Introduction to modern high performance computing platforms including top their research area. Project presentations are required. COURSE TOPICS 1. Overview of high-performance computing

256

MSIM 715/815:MSIM 715/815: HIGH PERFORMANCE COMPUTING AND SIMULATIONHIGH PERFORMANCE COMPUTING AND SIMULATION  

E-Print Network [OSTI]

MSIM 715/815:MSIM 715/815: HIGH PERFORMANCE COMPUTING AND SIMULATIONHIGH PERFORMANCE COMPUTING://www.odu.edu/msve COURSE DESCRIPTION Introduction to modern high performance comput- ing platforms including top-data for their research problems. Project presentations and reports are required. COURSE TOPICS 1. Overview of high-performance

257

June 8, 2007 Advanced Fault Tolerance Solutions for High Performance Computing  

E-Print Network [OSTI]

June 8, 2007 Advanced Fault Tolerance Solutions for High Performance Computing Workshop on Trends Tolerance Solutions for High Performance Computing Christian Engelmann Oak Ridge National Laboratory, Oak for High Performance Computing Workshop on Trends, Technologies and Collaborative Opportunities in High

Engelmann, Christian

258

Multijunction Photovoltaic Technologies for High-Performance Concentrators: Preprint  

SciTech Connect (OSTI)

Multijunction solar cells provide high-performance technology pathways leading to potentially low-cost electricity generated from concentrated sunlight. The National Center for Photovoltaics at the National Renewable Energy Laboratory has funded different III-V multijunction solar cell technologies and various solar concentration approaches. Within this group of projects, III-V solar cell efficiencies of 41% are close at hand and will likely be reported in these conference proceedings. Companies with well-developed solar concentrator structures foresee installed system costs of $3/watt--half of today's costs--within the next 2 to 5 years as these high-efficiency photovoltaic technologies are incorporated into their concentrator photovoltaic systems. These technology improvements are timely as new large-scale multi-megawatt markets, appropriate for high performance PV concentrators, open around the world.

McConnell, R.; Symko-Davies, M.

2006-05-01T23:59:59.000Z

259

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor is fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a ``notepad`` configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The notepad capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density. 5 figs.

Barbee, T.W. Jr.; Johnson, G.W.; O`Brien, D.W.

1995-05-09T23:59:59.000Z

260

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a "notepad" configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The "notepad" capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density.

Barbee, Jr., Troy W. (Palo Alto, CA); Johnson, Gary W. (Livermore, CA); O'Brien, Dennis W. (Livermore, CA)

1995-01-01T23:59:59.000Z

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


261

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor is described which is fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a ``notepad`` configuration composed of 200--300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The ``notepad`` capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density. 5 figs.

Barbee, T.W. Jr.; Johnson, G.W.; O`Brien, D.W.

1996-01-23T23:59:59.000Z

262

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a "notepad" configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The "notepad" capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density.

Barbee, Jr., Troy W. (Palo Alto, CA); Johnson, Gary W. (Livermore, CA); O'Brien, Dennis W. (Livermore, CA)

1996-01-01T23:59:59.000Z

263

High-Performance Computing for Advanced Smart Grid Applications  

SciTech Connect (OSTI)

The power grid is becoming far more complex as a result of the grid evolution meeting an information revolution. Due to the penetration of smart grid technologies, the grid is evolving as an unprecedented speed and the information infrastructure is fundamentally improved with a large number of smart meters and sensors that produce several orders of magnitude larger amounts of data. How to pull data in, perform analysis, and put information out in a real-time manner is a fundamental challenge in smart grid operation and planning. The future power grid requires high performance computing to be one of the foundational technologies in developing the algorithms and tools for the significantly increased complexity. New techniques and computational capabilities are required to meet the demands for higher reliability and better asset utilization, including advanced algorithms and computing hardware for large-scale modeling, simulation, and analysis. This chapter summarizes the computational challenges in smart grid and the need for high performance computing, and present examples of how high performance computing might be used for future smart grid operation and planning.

Huang, Zhenyu; Chen, Yousu

2012-07-06T23:59:59.000Z

264

High-performance computing centres use a great deal of electricity. In order to run its new com-  

E-Print Network [OSTI]

that with one pumping operation, cold water is supplied to two circuits to cool two types of systems. The cold- tural resource of Lake Lugano to cool its super- computers and the new building. A high as a small town. About a third of this electricity is used for cooling. If supercomputers are not constantly

265

High Performance Imaging Streak Camera for the National Ignition Facility  

SciTech Connect (OSTI)

An x-ray streak camera platform has been characterized and implemented for use at the National Ignition Facility. The camera has been modified to meet the experiment requirements of the National Ignition Campaign and to perform reliably in conditions that produce high EMI. A train of temporal UV timing markers has been added to the diagnostic in order to calibrate the temporal axis of the instrument and the detector efficiency of the streak camera was improved by using a CsI photocathode. The performance of the streak camera has been characterized and is summarized in this paper. The detector efficiency and cathode measurements are also presented.

Opachich, Y. P. [LLNL; Kalantar, D. [LLNL; MacPhee, A. [LLNL; Holder, J. [LLNL; Kimbrough, J. [LLNL; Bell, P. M. [LLNL; Bradley, D. [LLNL; Hatch, B. [LLNL; Brown, C. [LLNL; Landen, O. [LLNL; Perfect, B. H. [LLNL, HMC; Guidry, B. [LLNL; Mead, A. [NSTec; Charest, M. [NSTec; Palmer, N. [LLNL; Homoelle, D. [LLNL; Browning, D. [LLNL; Silbernagel, C. [NSTec; Brienza-Larsen, G. [NSTec; Griffin, M. [NSTec; Lee, J. J. [NSTec; Haugh, M. J. [NSTec

2012-12-01T23:59:59.000Z

266

NUCLEAR WASTE VITRIFICATION EFFICIENCY COLD CAP REACTIONS  

SciTech Connect (OSTI)

The cost and schedule of nuclear waste treatment and immobilization are greatly affected by the rate of glass production. Various factors influence the performance of a waste-glass melter. One of the most significant, and also one of the least understood, is the process of batch melting. Studies are being conducted to gain fundamental understanding of the batch reactions, particularly those that influence the rate of melting, and models are being developed to link batch makeup and melter operation to the melting rate. Batch melting takes place within the cold cap, i.e., a batch layer floating on the surface of molten glass. The conversion of batch to glass consists of various chemical reactions, phase transitions, and diffusion-controlled processes. These include water evaporation (slurry feed contains as high as 60% water), gas evolution, the melting of salts, the formation of borate melt, reactions of borate melt with molten salts and with amorphous oxides (Fe{sub 2}O{sub 3} and Al{sub 2}O{sub 3}), the formation of intermediate crystalline phases, the formation of a continuous glass-forming melt, the growth and collapse of primary foam, and the dissolution of residual solids. To this list we also need to add the formation of secondary foam that originates from molten glass but accumulates on the bottom of the cold cap. This study presents relevant data obtained for a high-level-waste melter feed and introduces a one-dimensional (1D) mathematical model of the cold cap as a step toward an advanced three-dimensional (3D) version for a complete model of the waste glass melter. The 1D model describes the batch-to-glass conversion within the cold cap as it progresses in a vertical direction. With constitutive equations and key parameters based on measured data, and simplified boundary conditions on the cold-cap interfaces with the glass melt and the plenum space of the melter, the model provides sensitivity analysis of the response of the cold cap to the batch makeup and melter conditions. The model demonstrates that batch foaming has a decisive influence on the rate of melting. Understanding the dynamics of the foam layer at the bottom of the cold cap and the heat transfer through it appears crucial for a reliable prediction of the rate of melting as a function of the melter-feed makeup and melter operation parameters. Although the study is focused on a batch for waste vitrification, the authors expect that the outcome will also be relevant for commercial glass melting.

KRUGER AA; HRMA PR; POKORNY R

2011-07-29T23:59:59.000Z

267

Revisit of Energy Use and Technologies of High Performance Buildings  

SciTech Connect (OSTI)

Energy consumed by buildings accounts for one third of the world?s total primary energy use. Associated with the conscious of energy savings in buildings, High Performance Buildings (HPBs) has surged across the world, with wide promotion and adoption of various performance rating and certification systems. It is valuable to look into the actual energy performance of HPBs and to understand their influencing factors. To shed some light on this topic, this paper conducted a series of portfolio analysis based on a database of 51 high performance office buildings across the world. Analyses showed that the actual site Energy Use Intensity (EUI) of the 51 buildings varied by a factor of up to 11, indicating a large scale of variation of the actual energy performance of the current HPBs. Further analysis of the correlation between EUI and climate elucidated ubiquitous phenomenon of EUI scatter throughout all climate zones, implying that the weather is not a decisive factor, although important, for the actual energy consumption of an individual building. On the building size via EUI, analysis disclosed that smaller buildings have a tendency to achieving lower energy use. Even so, the correlation is not absolute since some large buildings demonstrated low energy use while some small buildings performed opposite. Concerning the technologies, statistics indicated that the application of some technologies had correlations with some specific building size and climate characteristic. However, it was still hard to pinpoint a set of technologies which was directly correlative with a group of low EUI buildings. It is concluded that no a single factor essentially determines the actual energy performance of HPBs. To deliver energy-efficient buildings, an integrated design taking account of climate, technology, occupant behavior as well as operation and maintenance should be implemented.

Li , Cheng; Hong , Tianzhen

2014-03-30T23:59:59.000Z

268

Coal-fired high performance power generating system. Final report  

SciTech Connect (OSTI)

As a result of the investigations carried out during Phase 1 of the Engineering Development of Coal-Fired High-Performance Power Generation Systems (Combustion 2000), the UTRC-led Combustion 2000 Team is recommending the development of an advanced high performance power generation system (HIPPS) whose high efficiency and minimal pollutant emissions will enable the US to use its abundant coal resources to satisfy current and future demand for electric power. The high efficiency of the power plant, which is the key to minimizing the environmental impact of coal, can only be achieved using a modern gas turbine system. Minimization of emissions can be achieved by combustor design, and advanced air pollution control devices. The commercial plant design described herein is a combined cycle using either a frame-type gas turbine or an intercooled aeroderivative with clean air as the working fluid. The air is heated by a coal-fired high temperature advanced furnace (HITAF). The best performance from the cycle is achieved by using a modern aeroderivative gas turbine, such as the intercooled FT4000. A simplified schematic is shown. In the UTRC HIPPS, the conversion efficiency for the heavy frame gas turbine version will be 47.4% (HHV) compared to the approximately 35% that is achieved in conventional coal-fired plants. This cycle is based on a gas turbine operating at turbine inlet temperatures approaching 2,500 F. Using an aeroderivative type gas turbine, efficiencies of over 49% could be realized in advanced cycle configuration (Humid Air Turbine, or HAT). Performance of these power plants is given in a table.

NONE

1995-08-31T23:59:59.000Z

269

Optimizing performance per watt on GPUs in High Performance Computing: temperature, frequency and voltage effects  

E-Print Network [OSTI]

The magnitude of the real-time digital signal processing challenge attached to large radio astronomical antenna arrays motivates use of high performance computing (HPC) systems. The need for high power efficiency (performance per watt) at remote observatory sites parallels that in HPC broadly, where efficiency is an emerging critical metric. We investigate how the performance per watt of graphics processing units (GPUs) is affected by temperature, core clock frequency and voltage. Our results highlight how the underlying physical processes that govern transistor operation affect power efficiency. In particular, we show experimentally that GPU power consumption grows non-linearly with both temperature and supply voltage, as predicted by physical transistor models. We show lowering GPU supply voltage and increasing clock frequency while maintaining a low die temperature increases the power efficiency of an NVIDIA K20 GPU by up to 37-48% over default settings when running xGPU, a compute-bound code used in radio...

Price, D C; Barsdell, B R; Babich, R; Greenhill, L J

2014-01-01T23:59:59.000Z

270

PID Performance in the LHCb High Level Trigger  

E-Print Network [OSTI]

The LHCb High Level Trigger (HLT) incorporates RICH particle identification (PID) calculations that are designed to be faster than those used for the offline reconstruction, which is necessary due to the timing constraints imposed on the HLT. The performance of this faster calculation has been evaluated using $B^+ \\to \\overline{D}^0\\pi^+$ events recorded during 2011 data taking and compared against the performance of the offline calculation. The time taken to calculate PID information in the HLT has been measured both for the configuration used in Run 1, and for configurations approaching that used offline. Similar overall efficiency and misidentification performance is seen in the configurations used offline and in the HLT, though the raw values of PID variables can differ substantially for a given candidate.

Benson, S

2014-01-01T23:59:59.000Z

271

Materials integration issues for high performance fusion power systems.  

SciTech Connect (OSTI)

One of the primary requirements for the development of fusion as an energy source is the qualification of materials for the frost wall/blanket system that will provide high performance and exhibit favorable safety and environmental features. Both economic competitiveness and the environmental attractiveness of fusion will be strongly influenced by the materials constraints. A key aspect is the development of a compatible combination of materials for the various functions of structure, tritium breeding, coolant, neutron multiplication and other special requirements for a specific system. This paper presents an overview of key materials integration issues for high performance fusion power systems. Issues such as: chemical compatibility of structure and coolant, hydrogen/tritium interactions with the plasma facing/structure/breeder materials, thermomechanical constraints associated with coolant/structure, thermal-hydraulic requirements, and safety/environmental considerations from a systems viewpoint are presented. The major materials interactions for leading blanket concepts are discussed.

Smith, D. L.

1998-01-14T23:59:59.000Z

272

High performance computing and communications: FY 1996 implementation plan  

SciTech Connect (OSTI)

The High Performance Computing and Communications (HPCC) Program was formally authorized by passage of the High Performance Computing Act of 1991, signed on December 9, 1991. Twelve federal agencies, in collaboration with scientists and managers from US industry, universities, and research laboratories, have developed the Program to meet the challenges of advancing computing and associated communications technologies and practices. This plan provides a detailed description of the agencies` HPCC implementation plans for FY 1995 and FY 1996. This Implementation Plan contains three additional sections. Section 3 provides an overview of the HPCC Program definition and organization. Section 4 contains a breakdown of the five major components of the HPCC Program, with an emphasis on the overall directions and milestones planned for each one. Section 5 provides a detailed look at HPCC Program activities within each agency.

NONE

1995-05-16T23:59:59.000Z

273

Power Measurement for High Performance Computing: State of the Art  

SciTech Connect (OSTI)

Power utilization is a primary concern for high performance computing (HPC). Understanding it through physical measurements provides the critical first step to developing effective control techniques, yet obtaining power measurements remains an ad hoc process. In this paper, we survey popular measurement methods for HPC in terms of their measurement domains. We point out that the measurement process is slowly being standardized, and the real challenge lies in the real-time analysis of massive power data.

Hsu, Chung-Hsing [ORNL; Poole, Stephen W [ORNL

2011-01-01T23:59:59.000Z

274

GeoComputational Intelligence and High-Performance Geospatial Computing  

E-Print Network [OSTI]

Computation” as the innovative (or derived from other disciplines) computer-based geospatial modeling and analysis Contrasted against the traditional computer-supported spatial data analysis and geospatial modeling ? Openshaw (2000) also emphasized Computational Science..., Fractal Modelling, Visualization and Multimedia, Exploratory Data Analysis and Data Mining, etc. ?High-performance geospatial computing ANN-Urban-CA: an urban growth model ?Overview ? Combination of a Cellular Automata (CA) model, an Artificial Neural...

Guan, Qingfeng

2011-11-16T23:59:59.000Z

275

High Performance Computing: Needs and Application for Thailand  

E-Print Network [OSTI]

This paper presents the overview of High Performance Computing, the required components, and its applications. Current state of the HPC researches and facilities in Thailand has also been reviewed along with the HPC related research conducted in Kasetsart University. In summary, HPC is a technology that has an impact on Thailand competitiveness. Yet, much more qualifed man-power and broader recognition of the field are desparately needed.

Yuen Poovarawan Putchong; Putchong Uthayopas

1997-01-01T23:59:59.000Z

276

High-performance CFL downlights: The best and the brightest  

SciTech Connect (OSTI)

Downlight fixtures -- often referred to as ``recessed cans`` -- are among the most common lighting fixtures in commercial and residential settings. As such, they represent one of the most promising targets for improving lighting energy efficiency. The authors estimate that downlight fixtures account for more than one-fifth of the 2.8 billion incandescent lighting sockets in the US, and represent about 8 percent of total direct lighting energy use. Over 30 million new fixtures of this type are sold each year in the US. With existing and foreseeable technology, nearly two-thirds of the incandescent downlights in the US are candidates for retrofit or replacement with compact fluorescent lamps (CFLs) or fixtures. The remaining one-third, however, are unlikely to ever be replaceable with CFL technology because of constraints on light output, lighting quality, size, and cost-effectiveness of CFL alternatives. High performance downlight systems using compact fluorescent lamps and incorporating advanced optical, thermal, and ballast designs use up to 75 percent less energy than conventional incandescent downlight fixtures. Many CFL downlight fixtures, however, perform poorly. In this report, the authors explore ways in which various elements of fixture design influence performance. They also describe exemplary elements of high-performance designs, and evaluate several emerging or experimental technologies that promise to further improve efficiency.

Sardinsky, R.; Hawthorne, S.; Newcomb, J.

1993-12-31T23:59:59.000Z

277

A high-performance workflow system for subsurface simulation  

SciTech Connect (OSTI)

Subsurface modeling applications typically neglect uncertainty in the conceptual models, past or future scenarios, and attribute most or all uncertainty to errors in model parameters. In this contribution, uncertainty in technetium-99 transport in a heterogeneous, deep vadose zone is explored with respect to the conceptual model using a next generation user environment called Akuna. Akuna provides a range of tools to manage environmental modeling projects, from managing simulation data to visualizing results from high-performance computational simulators. Core toolsets accessible through the user interface include model setup, grid generation, parameter estimation, and uncertainty quantification. The BC Cribs site at Hanford in southeastern Washington State is used to demonstrate Akuna capabilities. At the BC Cribs site, conceptualization of the system is highly uncertain because only sparse information is available for the geologic conceptual model, the physical and chemical properties of the sediments, and the history of waste disposal operations. Using the Akuna toolset to perform an analysis of conservative solute transport, significant prediction uncertainty in simulated concentrations is demonstrated by conceptual model variation. This demonstrates that conceptual model uncertainty is an important consideration in sparse data environments such as BC Cribs. It is also demonstrated that Akuna and the underlying toolset provides an integrated modeling environment that streamlines model setup, parameter optimization, and uncertainty analyses for high-performance computing applications.

Freedman, Vicky L.; Chen, Xingyuan; Finsterle, Stefan A.; Freshley, Mark D.; Gorton, Ian; Gosink, Luke J.; Keating, Elizabeth; Lansing, Carina; Moeglein, William AM; Murray, Christopher J.; Pau, George Shu Heng; Porter, Ellen A.; Purohit, Sumit; Rockhold, Mark L.; Schuchardt, Karen L.; Sivaramakrishnan, Chandrika; Vesselinov, Velimir V.; Waichler, Scott R.

2014-02-14T23:59:59.000Z

278

High Performance Computing Education for Students in Computational Engineering  

E-Print Network [OSTI]

Numerical simulation using high performance computing has become a key technology for many scientific disciplines. Consequently, high performance computing courses constitute an essential component within the undergraduate and graduate programs in Computational Engineering at University of Erlangen-Nuremberg. These courses are also offered as optional courses in other degree programs, such as for majors in computer science. 1 The Erlangen Computational Engineering Program The courses in high performance computing at University of Erlangen-Nuremberg are primarily motivated by the the Computational Engineering (CE) program that has been initiated by the Department of Computer Science in 1997 as a prototype two-year postgraduate program leading to a Master degree. The corresponding undergraduate program has been started in 1999. Together these two programs are accepting approximately 30 new undergraduate students and 45 graduate students, annually. The traditional German university degree in the sciences and the engineering disciplines is the Diplom which corresponds approximately to the academic level of a Master degree in the US

Uwe Fabricius; Christoph Freundl; Harald Köstler; Ulrich Rüde; Uwe Fabricius; Christoph Freundl; Harald Köstler; Ulrich Rüde

279

Towards an Abstraction-Friendly Programming Model for High Productivity and High Performance Computing  

SciTech Connect (OSTI)

General purpose languages, such as C++, permit the construction of various high level abstractions to hide redundant, low level details and accelerate programming productivity. Example abstractions include functions, data structures, classes, templates and so on. However, the use of abstractions significantly impedes static code analyses and optimizations, including parallelization, applied to the abstractions complex implementations. As a result, there is a common perception that performance is inversely proportional to the level of abstraction. On the other hand, programming large scale, possibly heterogeneous high-performance computing systems is notoriously difficult and programmers are less likely to abandon the help from high level abstractions when solving real-world, complex problems. Therefore, the need for programming models balancing both programming productivity and execution performance has reached a new level of criticality. We are exploring a novel abstraction-friendly programming model in order to support high productivity and high performance computing. We believe that standard or domain-specific semantics associated with high level abstractions can be exploited to aid compiler analyses and optimizations, thus helping achieving high performance without losing high productivity. We encode representative abstractions and their useful semantics into an abstraction specification file. In the meantime, an accessible, source-to-source compiler infrastructure (the ROSE compiler) is used to facilitate recognizing high level abstractions and utilizing their semantics for more optimization opportunities. Our initial work has shown that recognizing abstractions and knowing their semantics within a compiler can dramatically extend the applicability of existing optimizations, including automatic parallelization. Moreover, a new set of optimizations have become possible within an abstraction-friendly and semantics-aware programming model. In the future, we will apply our programming model to more large scale applications. In particular, we plan to classify and formalize more high level abstractions and semantics which are relevant to high performance computing. We will also investigate better ways to allow language designers, library developers and programmers to communicate abstraction and semantics information with each other.

Liao, C; Quinlan, D; Panas, T

2009-10-06T23:59:59.000Z

280

Editorial for Advanced Theory and Practice for High Performance Computing and Communications Geoffrey Fox  

E-Print Network [OSTI]

Editorial for Advanced Theory and Practice for High Performance Computing and Communications Theory and Practice for High Performance Computing and Communications. I would like to thank Omer Rana International Conference on High Performance Computing and Communications (HPCC-09) http

Note: This page contains sample records for the topic "high performance cold" 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

June 4, 2007 Advanced Fault Tolerance Solutions for High Performance Computing  

E-Print Network [OSTI]

June 4, 2007 Advanced Fault Tolerance Solutions for High Performance Computing Workshop on Trends Tolerance Solutions for High Performance Computing Christian Engelmann Oak Ridge National Laboratory, Oak Solutions for High Performance Computing Workshop on Trends, Technologies and Collaborative Opportunities

Engelmann, Christian

282

High performance, high bandgap, lattice-mismatched, GaInP solar cells  

DOE Patents [OSTI]

High performance, high bandgap, lattice-mismatched, photovoltaic cells (10), both transparent and non-transparent to sub-bandgap light, are provided as devices for use alone or in combination with other cells in split spectrum apparatus or other applications.

Wanlass, Mark W.; Carapella, Jeffrey J.; Steiner, Myles A.

2014-07-08T23:59:59.000Z

283

Enhancements to High Temperature In-Pile Thermocouple Performance  

SciTech Connect (OSTI)

A joint University of Idaho (UI) and Idaho National Laboratory (INL) University Nuclear Research Initiative (UNERI) was to initiated to extend initial INL efforts to develop doped molybdenum/niobium alloy High Temperature Irradiation Resistant Thermocouples (HTIR-TCs). The overall objective of this UNERI was to develop recommendations for an optimized thermocouple design for high temperature, long duration, in-pile testing by expanding upon results from initial INL efforts. Tasks to quantify the impact of candidate enhancements, such as alternate alloys, alternate geometries, and alternate thermocouple fabrication techniques, on thermocouple performance were completed at INL's High Temperature Test Laboratory (HTTL), a state of the art facility equipped with specialized equipment and trained staff in the area of high temperature instrumentation development and evaluation. Key results of these evaluations, which are documented in this report, are as follows. The doped molybdenum and Nb-1%Zr, which were proposed in the initial INL HTIR-TC design, were found to retain ductility better than the developmental molybdenum-low niobium alloys and the niobium-low molybdenum alloys evaluated. Hence, the performance and lower cost of the commercially available KW-Mo makes a thermocouple containing KW-Mo and Nb-1%Zr the best option at this time. HTIR-TCs containing larger diameter wires offer the potential to increase HTIR-TC stability and reliability at higher temperatures. HTIR-TC heat treatment temperatures and times should be limited to not more than 100 C above the proposed operating temperatures and to durations of at least 4 to 5 hours. Preliminary investigations suggest that the performance of swaged and loose assembly HTIR-TC designs is similar. However, the swaged designs are less expensive and easier to construct. In addition to optimizing HTIR-TC performance, This UNERI project provided unique opportunities to several University of Idaho students, allowing them to become familiar with the techniques and equipment used for specialized high temperature instrumentation fabrication and evaluation and to author/coauthor several key conference papers and journal articles.

J.C. Crepeau; J.L. Rempe; J.E. Daw; D.L. Knudson: K.G. Condie; S.C. Wilkins

2008-03-31T23:59:59.000Z

284

Enhancements to High Temperature In-Pile Thermocouple Performance  

SciTech Connect (OSTI)

A joint University of Idaho (UI) and Idaho National Laboratory (INL) University Nuclear Research Initiative (UNERI) was to initiated to extend initial INL efforts to develop doped lybdenum/niobium alloy High Temperature Irradiation Resistant Thermocouples (HTIR-TCs). The overall objective of this UNERI was to develop recommendations for an optimized thermocouple design for high temperature, long duration, in-pile testing by expanding upon results from initial INL efforts. Tasks to quantify the impact of candidate enhancements, such as alternate alloys, alternate geometries, and alternate thermocouple fabrication techniques, on thermocouple performance were completed at INL's High Temperature Test Laboratory (HTTL), a state of the art facility equipped with specialized equipment and trained staff in the area of high temperature instrumentation development and evaluation. Key results of these evaluations, which are documented in this report, are as follows. The doped molybdenum and Nb-1%Zr, which were proposed in the initial INL HTIR-TC design, were found to retain ductility better than the developmental molybdenum-low niobium alloys and the niobium-low molybdenum alloys evaluated. Hence, the performance and lower cost of the commercially available KW-Mo makes a thermocouple containing KW-Mo and Nb-1%Zr the best option at this time. HTIR-TCs containing larger diameter wires offer the potential to increase HTIR-TC stability and reliability at higher temperatures. HTIR-TC heat treatment temperatures and times should be limited to not more than 100 °C above the proposed operating temperatures and to durations of at least 4 to 5 hours. Preliminary investigations suggest that the performance of swaged and loose assembly HTIR-TC designs is similar. However, the swaged designs are less expensive and easier to construct. In addition to optimizing HTIR-TC performance, This UNERI project provided unique opportunities to several University of Idaho students, allowing them to become familiar with the techniques and equipment used for specialized high temperature instrumentation fabrication and evaluation and to author/coauthor several key conference papers and journal articles.

J. C. Crepeau; J. L. Rempe; J. E. Daw; D. L. Knudson; K. G. Condie; S. C. Wilkins

2008-03-01T23:59:59.000Z

285

High-Performance Sustainable Building Design for New Construction and Major Renovations  

Broader source: Energy.gov [DOE]

New construction and major renovations to existing buildings offer Federal agencies opportunities to create sustainable high-performance buildings. High-performance buildings can incorporate energy...

286

E-Print Network 3.0 - amorphous metals high-performance Sample...  

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

Mathematics 4 Licensable Technologies Summary: and low-performance, low-cost amorphous film solar cells. n Potential for high efficiency, high-performance... Benefits: n...

287

U.S. Department of Energy High Performance and Sustainable Buildings...  

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

DOE's commitment to designing, building, operating, and maintaining high performance and sustainable buildings (HPSB). U.S. Department of Energy High Performance and Sustainable...

288

Finite-State Verification for High Performance Computing George S. Avrunin  

E-Print Network [OSTI]

Finite-State Verification for High Performance Computing George S. Avrunin Department (top500.org) reveals that high performance computing has become practically synonymous with parallel

Avrunin, George S.

289

High Performance Computing linear algorithms for two-phase flow in porous media  

E-Print Network [OSTI]

High Performance Computing linear algorithms for two-phase flow in porous media Robert Eymard High Performance Computing techniques. This implies to handle the difficult problem of solving

Paris-Sud XI, Université de

290

GOCE DATA ANALYSIS: REALIZATION OF THE INVARIANTS APPROACH IN A HIGH PERFORMANCE COMPUTING ENVIRONMENT  

E-Print Network [OSTI]

GOCE DATA ANALYSIS: REALIZATION OF THE INVARIANTS APPROACH IN A HIGH PERFORMANCE COMPUTING) implementation of the algorithms on high performance computing platforms. #12;2. INVARIANTS REPRESENTATION

Stuttgart, Universität

291

Performance of Nb3Sn Quadrupole Under High Stress  

SciTech Connect (OSTI)

Future upgrades of the Large Hadron Collider (LHC) will require large aperture and high gradient quadrupoles. Nb{sub 3}Sn is the most viable option for this application but is also known for its strain sensitivity. In high field magnets, with magnetic fields above 12 T, the Lorentz forces will generate mechanical stresses that may exceed 200 MPa in the windings. The existing measurements of critical current versus strain of Nb{sub 3}Sn strands or cables are not easily applicable to magnets. In order to investigate the impact of high mechanical stress on the quench performance, a series of tests was carried out within a LBNL/CERN collaboration using the magnet TQS03 (a LHC Accelerator Research Program (LARP) 1-meter long, 90-mm aperture Nb{sub 3}Sn quadrupole). The magnet was tested four times at CERN under various pre-stress conditions. The average mechanical compressive azimuthal pre-stress on the coil at 4.2 K ranged from 120 MPa to 200 MPa. This paper reports on the magnet performance during the four tests focusing on the relation between pre-stress conditions and the training plateau.

Felice, H.; Bajko, M.; Bingham, B.; Bordini, B.; Bottura, L.; Caspi, S.; Rijk, G. De; Dietderich, D.; Ferracin, P.; Giloux, C.; Godeke, A.; Hafalia, R.; Milanese, A.; Rossi, L.; Sabbi, G. L.

2010-08-01T23:59:59.000Z

292

A review of High Performance Computing foundations for scientists  

E-Print Network [OSTI]

The increase of existing computational capabilities has made simulation emerge as a third discipline of Science, lying midway between experimental and purely theoretical branches [1, 2]. Simulation enables the evaluation of quantities which otherwise would not be accessible, helps to improve experiments and provides new insights on systems which are analysed [3-6]. Knowing the fundamentals of computation can be very useful for scientists, for it can help them to improve the performance of their theoretical models and simulations. This review includes some technical essentials that can be useful to this end, and it is devised as a complement for researchers whose education is focused on scientific issues and not on technological respects. In this document we attempt to discuss the fundamentals of High Performance Computing (HPC) [7] in a way which is easy to understand without much previous background. We sketch the way standard computers and supercomputers work, as well as discuss distributed computing and di...

Ibáńez, Pablo García-Risueńo Pablo E

2012-01-01T23:59:59.000Z

293

High Performance Multivariate Visual Data Exploration for Extremely Large Data  

SciTech Connect (OSTI)

One of the central challenges in modern science is the need to quickly derive knowledge and understanding from large, complex collections of data. We present a new approach that deals with this challenge by combining and extending techniques from high performance visual data analysis and scientific data management. This approach is demonstrated within the context of gaining insight from complex, time-varying datasets produced by a laser wakefield accelerator simulation. Our approach leverages histogram-based parallel coordinates for both visual information display as well as a vehicle for guiding a data mining operation. Data extraction and subsetting are implemented with state-of-the-art index/query technology. This approach, while applied here to accelerator science, is generally applicable to a broad set of science applications, and is implemented in a production-quality visual data analysis infrastructure. We conduct a detailed performance analysis and demonstrate good scalability on a distributed memory Cray XT4 system.

Rubel, Oliver; Wu, Kesheng; Childs, Hank; Meredith, Jeremy; Geddes, Cameron G.R.; Cormier-Michel, Estelle; Ahern, Sean; Weber, Gunther H.; Messmer, Peter; Hagen, Hans; Hamann, Bernd; Bethel, E. Wes; Prabhat,

2008-08-22T23:59:59.000Z

294

Middleware in Modern High Performance Computing System Architectures  

SciTech Connect (OSTI)

A recent trend in modern high performance computing (HPC) system architectures employs ''lean'' compute nodes running a lightweight operating system (OS). Certain parts of the OS as well as other system software services are moved to service nodes in order to increase performance and scalability. This paper examines the impact of this HPC system architecture trend on HPC ''middleware'' software solutions, which traditionally equip HPC systems with advanced features, such as parallel and distributed programming models, appropriate system resource management mechanisms, remote application steering and user interaction techniques. Since the approach of keeping the compute node software stack small and simple is orthogonal to the middleware concept of adding missing OS features between OS and application, the role and architecture of middleware in modern HPC systems needs to be revisited. The result is a paradigm shift in HPC middleware design, where single middleware services are moved to service nodes, while runtime environments (RTEs) continue to reside on compute nodes.

Engelmann, Christian [ORNL; Ong, Hong Hoe [ORNL; Scott, Stephen L [ORNL

2007-01-01T23:59:59.000Z

295

Strategy Guideline: Advanced Construction Documentation Recommendations for High Performance Homes  

SciTech Connect (OSTI)

As whole house energy efficiency increases, new houses become less like conventional houses that were built in the past. New materials and new systems require greater coordination and communication between industry stakeholders. The Guideline for Construction Documents for High Performance Housing provides advice to address this need. The reader will be presented with four changes that are recommended to achieve improvements in energy efficiency, durability and health in Building America houses: create coordination drawings, improve specifications, improve detail drawings, and review drawings and prepare a Quality Control Plan.

Lukachko, A.; Gates, C.; Straube, J.

2011-12-01T23:59:59.000Z

296

Halide and Oxy-Halide Eutectic Systems for High-Performance,...  

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

and Oxy-Halide Eutectic Systems for High-Performance, High-Temperature Heat Transfer Fluids Halide and Oxy-Halide Eutectic Systems for High-Performance, High-Temperature Heat...

297

Spectroscopy of a cold strontium Rydberg gas  

E-Print Network [OSTI]

We present a study of a cold strontium Rydberg gas. The narrowband laser excitation of Rydberg states in the range n=20-80 from a 6~mK cloud of strontium atoms is detected using the spontaneous ionization of the Rydberg atoms. Using a high-resolution step-scanning technique, we perform detailed measurements of the Stark maps of selected Rydberg states. We find excellent agreement between the measured Stark maps and a numerical calculation based on an independent-electron model. Finally we show that excitation of the second valence electron can be used to probe the dynamics of the Rydberg gas with nanosecond temporal resolution via autoionization.

Millen, J; Corbett, G R; Potvliege, R M; Jones, M P A

2011-01-01T23:59:59.000Z

298

High performance transistors via aligned polyfluorene-sorted carbon nanotubes  

SciTech Connect (OSTI)

We evaluate the performance of exceptionally electronic-type sorted, semiconducting, aligned single-walled carbon nanotubes (s-SWCNTs) in field effect transistors (FETs). High on-conductance and high on/off conductance modulation are simultaneously achieved at channel lengths which are both shorter and longer than individual s-SWCNTs. The s-SWCNTs are isolated from heterogeneous mixtures using a polyfluorene-derivative as a selective agent and aligned on substrates via dose-controlled, floating evaporative self-assembly at densities of ?50 s-SWCNTs ?m{sup ?1}. At a channel length of 9??m the s-SWCNTs percolate to span the FET channel, and the on/off ratio and charge transport mobility are 2.2?×?10{sup 7} and 46?cm{sup 2}?V{sup ?1}?s{sup ?1}, respectively. At a channel length of 400?nm, a large fraction of the s-SWCNTs directly span the channel, and the on-conductance per width is 61??S??m{sup ?1} and the on/off ratio is 4?×?10{sup 5}. These results are considerably better than previous solution-processed FETs, which have suffered from poor on/off ratio due to spurious metallic nanotubes that bridge the channel. 4071 individual and small bundles of s-SWCNTs are tested in 400?nm channel length FETs, and all show semiconducting behavior, demonstrating the high fidelity of polyfluorenes as selective agents and the promise of assembling s-SWCNTs from solution to create high performance semiconductor electronic devices.

Brady, Gerald J.; Joo, Yongho; Singha Roy, Susmit; Gopalan, Padma; Arnold, Michael S., E-mail: msarnold@wisc.edu [Department of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Avenue, Madison, Wisconsin 53706 (United States)

2014-02-24T23:59:59.000Z

299

High Performance Computing Update, June 2009 1. A meeting was held with users and potential users of high performance computing systems in April and this  

E-Print Network [OSTI]

High Performance Computing Update, June 2009 1. A meeting was held with users and potential users of high performance computing systems in April and this considered a proposal from the Director and application "advice" and a core system to host and manage high performance computing nodes (or clusters

Sussex, University of

300

Experiments and Investigations for the Personal High Performance Computing  

E-Print Network [OSTI]

(PHPC) built on top of the 64-bit processing and clustering systems The motivation and objective for this paper is to demonstrate “Personal High Performance Computing (PHPC)”, which requires only a smaller number of computers, resources and space in the secure wireless home networking (WHN) environment. The PHPC is based on a cluster of the 64-bit AMD machines, which can achieve the following: (a) reducing CPU time by 10 %- 50 % for a single task; (b) minimizing the memory and hard-disk workload by 50%; (c) running 64-bit software applications successfully; (d) receiving up to 60 % better performance in multi-tasking performance; (e) executing fast, robust and accurate calculations, visualization and server-side applications on 32-bit and 64-bit Windows and Linux; (f) ensuring a secure working environment (g) storing a massive amount of data (12 TB, or 12,000 GB) for database and server applications; and (h) successfully integrating with other emerging technologies such as LAN/wireless networks and entertainment systems. 1.

unknown authors

Note: This page contains sample records for the topic "high performance cold" from the National Library of EnergyBeta (NLEBeta).
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301

Nuclear rockets: High-performance propulsion for Mars  

SciTech Connect (OSTI)

A new impetus to manned Mars exploration was introduced by President Bush in his Space Exploration Initiative. This has led, in turn, to a renewed interest in high-thrust nuclear thermal rocket propulsion (NTP). The purpose of this report is to give a brief tutorial introduction to NTP and provide a basic understanding of some of the technical issues in the realization of an operational NTP engine. Fundamental physical principles are outlined from which a variety of qualitative advantages of NTP over chemical propulsion systems derive, and quantitative performance comparisons are presented for illustrative Mars missions. Key technologies are described for a representative solid-core heat-exchanger class of engine, based on the extensive development work in the Rover and NERVA nuclear rocket programs (1955 to 1973). The most driving technology, fuel development, is discussed in some detail for these systems. Essential highlights are presented for the 19 full-scale reactor and engine tests performed in these programs. On the basis of these tests, the practicality of graphite-based nuclear rocket engines was established. Finally, several higher-performance advanced concepts are discussed. These have received considerable attention, but have not, as yet, developed enough credibility to receive large-scale development.

Watson, C.W.

1994-05-01T23:59:59.000Z

302

High Performance Fuel Desing for Next Generation Pressurized Water Reactors  

SciTech Connect (OSTI)

The use of internally and externally cooled annular fule rods for high power density Pressurized Water Reactors is assessed. The assessment included steady state and transient thermal conditions, neutronic and fuel management requirements, mechanical vibration issues, fuel performance issues, fuel fabrication methods and econmic assessment. The investigation was donducted by a team from MIT, Westinghouse, Gamma Engineering, Framatome ANP, and AECL. The analyses led to the conclusion that raising the power density by 50% may be possible with this advanced fuel. Even at the 150% power level, the fuel temperature would be a few hundred degrees lower than the current fuel temperatre. Significant economic and safety advantages can be obtained by using this fuel in new reactors. Switching to this type of fuel for existing reactors would yield safety advantages, but the economic return is dependent on the duration of plant shutdown to accommodate higher power production. The main feasiblity issue for the high power performance appears to be the potential for uneven splitting of heat flux between the inner and outer fuel surfaces due to premature closure of the outer fuel-cladding gap. This could be overcome by using a very narrow gap for the inner fuel surface and/or the spraying of a crushable zirconium oxide film at the fuel pellet outer surface. An alternative fuel manufacturing approach using vobropacking was also investigated but appears to yield lower than desirable fuel density.

Mujid S. Kazimi; Pavel Hejzlar

2006-01-31T23:59:59.000Z

303

High performance computing and communications: FY 1995 implementation plan  

SciTech Connect (OSTI)

The High Performance Computing and Communications (HPCC) Program was formally established following passage of the High Performance Computing Act of 1991 signed on December 9, 1991. Ten federal agencies in collaboration with scientists and managers from US industry, universities, and laboratories have developed the HPCC Program to meet the challenges of advancing computing and associated communications technologies and practices. This plan provides a detailed description of the agencies` HPCC implementation plans for FY 1994 and FY 1995. This Implementation Plan contains three additional sections. Section 3 provides an overview of the HPCC Program definition and organization. Section 4 contains a breakdown of the five major components of the HPCC Program, with an emphasis on the overall directions and milestones planned for each one. Section 5 provides a detailed look at HPCC Program activities within each agency. Although the Department of Education is an official HPCC agency, its current funding and reporting of crosscut activities goes through the Committee on Education and Health Resources, not the HPCC Program. For this reason the Implementation Plan covers nine HPCC agencies.

NONE

1994-04-01T23:59:59.000Z

304

International workshop on cold neutron sources  

SciTech Connect (OSTI)

The first meeting devoted to cold neutron sources was held at the Los Alamos National Laboratory on March 5--8, 1990. Cosponsored by Los Alamos and Oak Ridge National Laboratories, the meeting was organized as an International Workshop on Cold Neutron Sources and brought together experts in the field of cold-neutron-source design for reactors and spallation sources. Eighty-four people from seven countries attended. Because the meeting was the first of its kind in over forty years, much time was spent acquainting participants with past and planned activities at reactor and spallation facilities worldwide. As a result, the meeting had more of a conference flavor than one of a workshop. The general topics covered at the workshop included: Criteria for cold source design; neutronic predictions and performance; energy deposition and removal; engineering design, fabrication, and operation; material properties; radiation damage; instrumentation; safety; existing cold sources; and future cold sources.

Russell, G.J.; West, C.D. (comps.) (Los Alamos National Lab., NM (United States)) [comps.; Los Alamos National Lab., NM (United States)

1991-08-01T23:59:59.000Z

305

Thermal hydraulic performance testing of printed circuit heat exchangers in a high-temperature helium test facility  

SciTech Connect (OSTI)

In high-temperature gas-cooled reactors, such as a very high temperature reactor (VHTR), an intermediate heat exchanger (IHX) is required to efficiently transfer the core thermal output to a secondary fluid for electricity generation with an indirect power cycle and/or process heat applications. Currently, there is no proven high-temperature (750–800 °C or higher) compact heat exchanger technology for high-temperature reactor design concepts. In this study, printed circuit heat exchanger (PCHE), a potential IHX concept for high-temperature applications, has been investigated for their heat transfer and pressure drop characteristics under high operating temperatures and pressures. Two PCHEs, each having 10 hot and 10 cold plates with 12 channels (semicircular cross-section) in each plate are fabricated using Alloy 617 plates and tested for their performance in a high-temperature helium test facility (HTHF). The PCHE inlet temperature and pressure were varied from 85 to 390 °C/1.0–2.7 MPa for the cold side and 208–790 °C/1.0–2.7 MPa for the hot side, respectively, while the mass flow rate of helium was varied from 15 to 49 kg/h. This range of mass flow rates corresponds to PCHE channel Reynolds numbers of 950 to 4100 for the cold side and 900 to 3900 for the hot side (corresponding to the laminar and laminar-to-turbulent transition flow regimes). The obtained experimental data have been analyzed for the pressure drop and heat transfer characteristics of the heat transfer surface of the PCHEs and compared with the available models and correlations in the literature. In addition, a numerical treatment of hydrodynamically developing and hydrodynamically fully-developed laminar flow through a semicircular duct is presented. Relations developed for determining the hydrodynamic entrance length in a semicircular duct and the friction factor (or pressure drop) in the hydrodynamic entry length region for laminar flow through a semicircular duct are given. Various hydrodynamic entrance region parameters, such as incremental pressure drop number, apparent Fanning friction factor, and hydrodynamic entrance length in a semicircular duct have been numerically estimated.

Sai K. Mylavarapu; Xiaodong Sun; Richard E. Glosup; Richard N. Christensen; Michael W. Patterson

2014-04-01T23:59:59.000Z

306

A High Performance Computing Platform for Performing High-Volume Studies With Windows-based Power Grid Tools  

SciTech Connect (OSTI)

Serial Windows-based programs are widely used in power utilities. For applications that require high volume simulations, the single CPU runtime can be on the order of days or weeks. The lengthy runtime, along with the availability of low cost hardware, is leading utilities to seriously consider High Performance Computing (HPC) techniques. However, the vast majority of the HPC computers are still Linux-based and many HPC applications have been custom developed external to the core simulation engine without consideration for ease of use. This has created a technical gap for applying HPC-based tools to today’s power grid studies. To fill this gap and accelerate the acceptance and adoption of HPC for power grid applications, this paper presents a prototype of generic HPC platform for running Windows-based power grid programs on Linux-based HPC environment. The preliminary results show that the runtime can be reduced from weeks to hours to improve work efficiency.

Chen, Yousu; Huang, Zhenyu

2014-08-31T23:59:59.000Z

307

Optimizing Cooling Tower Performance- Refrigeration Systems, Chemical Plants, and Power Plants all Have A Resource Quietly Awaiting Exploitation-Cold Water!!  

E-Print Network [OSTI]

requirements before a cooling tower is purchased. This relates to the volume of circulatlng water, hot water temperature on the tower, cold water temperature discharge, and wet bulb temperature (consisting of ambient temperature and relative humidity... rather than a portion of it for water breakup and splash resulting in a net lower temperature. b. Water ~roughs or enclosed flumes in counterflow towers should be changed to a low-pressure spray piping system. c. Existing spray systems can...

Burger, R.

308

Indoor Air Quality in 24 California Residences Designed as High Performance Green Homes  

E-Print Network [OSTI]

buildings to climate change, concerns over the detrimental air quality impacts of high performance green

Less, Brennan

2012-01-01T23:59:59.000Z

309

High-performance scalable Information Service for the ATLAS experiment  

E-Print Network [OSTI]

The ATLAS experiment is being operated by highly distributed computing system which is constantly producing a lot of status information which is used to monitor the experiment operational conditions as well as to access the quality of the physics data being taken. For example the ATLAS High Level Trigger(HLT) algorithms are executed on the online computing farm consisting from about 1500 nodes. Each HLT algorithm is producing few thousands histograms, which have to be integrated over the whole farm and carefully analyzed in order to properly tune the event rejection. In order to handle such non-physics data the Information Service (IS) facility has been developed in the scope of the ATLAS TDAQ project. The IS provides high-performance scalable solution for information exchange in distributed environment. In the course of an ATLAS data taking session the IS handles about hundred gigabytes of information which is being constantly updated with the update interval varying from a second to few tens of seconds. IS ...

Kolos, S; The ATLAS collaboration; Hauser, R

2012-01-01T23:59:59.000Z

310

High Performance Building Facade Solutions PIER Final Project Report  

SciTech Connect (OSTI)

Building facades directly influence heating and cooling loads and indirectly influence lighting loads when daylighting is considered, and are therefore a major determinant of annual energy use and peak electric demand. Facades also significantly influence occupant comfort and satisfaction, making the design optimization challenge more complex than many other building systems.This work focused on addressing significant near-term opportunities to reduce energy use in California commercial building stock by a) targeting voluntary, design-based opportunities derived from the use of better design guidelines and tools, and b) developing and deploying more efficient glazings, shading systems, daylighting systems, facade systems and integrated controls. This two-year project, supported by the California Energy Commission PIER program and the US Department of Energy, initiated a collaborative effort between The Lawrence Berkeley National Laboratory (LBNL) and major stakeholders in the facades industry to develop, evaluate, and accelerate market deployment of emerging, high-performance, integrated facade solutions. The LBNL Windows Testbed Facility acted as the primary catalyst and mediator on both sides of the building industry supply-user business transaction by a) aiding component suppliers to create and optimize cost effective, integrated systems that work, and b) demonstrating and verifying to the owner, designer, and specifier community that these integrated systems reliably deliver required energy performance. An industry consortium was initiated amongst approximately seventy disparate stakeholders, who unlike the HVAC or lighting industry, has no single representative, multi-disciplinary body or organized means of communicating and collaborating. The consortium provided guidance on the project and more importantly, began to mutually work out and agree on the goals, criteria, and pathways needed to attain the ambitious net zero energy goals defined by California and the US.A collaborative test, monitoring, and reporting protocol was also formulated via the Windows Testbed Facility in collaboration with industry partners, transitioning industry to focus on the importance of expecting measured performance to consistently achieve design performance expectations. The facility enables accurate quantification of energy use, peak demand, and occupant comfort impacts of synergistic facade-lighting-HVAC systems on an apples-to-apples comparative basis and its data can be used to verify results from simulations. Emerging interior and exterior shading technologies were investigated as potential near-term, low-cost solutions with potential broad applicability in both new and retrofit construction. Commercially-available and prototype technologies were developed, tested, and evaluated. Full-scale, monitored field tests were conducted over solstice-to-solstice periods to thoroughly evaluate the technologies, uncover potential risks associated with an unknown, and quantify performance benefits. Exterior shading systems were found to yield net zero energy levels of performance in a sunny climate and significant reductions in summer peak demand. Automated interior shading systems were found to yield significant daylighting and comfort-related benefits.In support of an integrated design process, a PC-based commercial fenestration (COMFEN) software package, based on EnergyPlus, was developed that enables architects and engineers to quickly assess and compare the performance of innovative facade technologies in the early sketch or schematic design phase. This tool is publicly available for free and will continue to improve in terms of features and accuracy. Other work was conducted to develop simulation tools to model the performance of any arbitrary complex fenestration system such as common Venetian blinds, fabric roller shades as well as more exotic innovative facade systems such as optical louver systems.

Lee, Eleanor; Selkowitz, Stephen

2009-12-31T23:59:59.000Z

311

Figure and finish characterization of high performance metal mirrors  

SciTech Connect (OSTI)

Most metal mirrors currently used in synchrotron radiation (SR) beam lines to reflect soft x-rays are made of electroless nickel plate on an aluminum substrate. This material combination has allowed optical designers to incorporate exotic cylindrical aspheres into grazing incidence x-ray beam-handling systems by taking advantage of single-point diamond machining techniques. But the promise of high-quality electroless nickel surfaces has generally exceeded the performance. We will examine the evolution of electroless nickel surfaces through a study of the quality of mirrors delivered for use at the National Synchrotron Light Source over the past seven years. We have developed techniques to assess surface quality based on the measurement of surface roughness and figure errors with optical profiling instruments. It is instructive to see how the quality of the surface is related to the complexity of the machine operations required to produce it.

Takacs, P.Z. [Brookhaven National Lab., Upton, NY (United States); Church, E.L. [Army Armament Research and Development Command, Dover, NJ (United States)

1991-10-01T23:59:59.000Z

312

High Performance Computing - Power Application Programming Interface Specification.  

SciTech Connect (OSTI)

Measuring and controlling the power and energy consumption of high performance computing systems by various components in the software stack is an active research area [13, 3, 5, 10, 4, 21, 19, 16, 7, 17, 20, 18, 11, 1, 6, 14, 12]. Implementations in lower level software layers are beginning to emerge in some production systems, which is very welcome. To be most effective, a portable interface to measurement and control features would significantly facilitate participation by all levels of the software stack. We present a proposal for a standard power Application Programming Interface (API) that endeavors to cover the entire software space, from generic hardware interfaces to the input from the computer facility manager.

Laros, James H.,; Kelly, Suzanne M.; Pedretti, Kevin; Grant, Ryan; Olivier, Stephen Lecler; Levenhagen, Michael J.; DeBonis, David

2014-08-01T23:59:59.000Z

313

Power/energy use cases for high performance computing.  

SciTech Connect (OSTI)

Power and Energy have been identified as a first order challenge for future extreme scale high performance computing (HPC) systems. In practice the breakthroughs will need to be provided by the hardware vendors. But to make the best use of the solutions in an HPC environment, it will likely require periodic tuning by facility operators and software components. This document describes the actions and interactions needed to maximize power resources. It strives to cover the entire operational space in which an HPC system occupies. The descriptions are presented as formal use cases, as documented in the Unified Modeling Language Specification [1]. The document is intended to provide a common understanding to the HPC community of the necessary management and control capabilities. Assuming a common understanding can be achieved, the next step will be to develop a set of Application Programing Interfaces (APIs) to which hardware vendors and software developers could utilize to steer power consumption.

Laros, James H.,; Kelly, Suzanne M; Hammond, Steven [National Renewable Energy Laboratory] [National Renewable Energy Laboratory; Elmore, Ryan; Munch, Kristin

2013-12-01T23:59:59.000Z

314

High-performance laser processing using manipulated ultrafast laser pulses  

SciTech Connect (OSTI)

We employ manipulated ultrafast laser pulses to realize microprocessing with high-performance. Efficient microwelding of glass substrates by irradiation by a double-pulse train of ultrafast laser pulses is demonstrated. The bonding strength of two photostructurable glass substrates welded by double-pulse irradiation was evaluated to be 22.9 MPa, which is approximately 22% greater than that of a sample prepared by conventional irradiation by a single pulse train. Additionally, the fabrication of hollow microfluidic channels with a circular cross-sectional shape embedded in fused silica is realized by spatiotemporally focusing the ultrafast laser beam. We show both theoretically and experimentally that the spatiotemporal focusing of ultrafast laser beam allows for the creation of a three-dimensionally symmetric spherical peak intensity distribution at the focal spot.

Sugioka, Koji; Cheng Ya; Xu Zhizhan; Hanada, Yasutaka; Midorikawa, Katsumi [RIKEN - Advanced Science Institute, Wako, Saitama 351-0198 (Japan); State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (China); RIKEN - Advanced Science Institute, Wako, Saitama 351-0198 (Japan)

2012-07-30T23:59:59.000Z

315

Commercial Building Partners Catalyze High Performance Buildings Across the Nation  

SciTech Connect (OSTI)

In 2008 the US Department of Energy (DOE) launched the Commercial Buildings Partnership (CBP) project to accelerate market adoption of commercially available energy saving technologies into the design process for new and upgraded commercial buildings. The CBP represents a unique collaboration between industry leaders and DOE to develop high performance buildings as a model for future construction and renovation. CBP was implemented in two stages. This paper focuses on lessons learned at Pacific Northwest National Laboratory (PNNL) in the first stage and discusses some partner insights from the second stage. In the first stage, PNNL and the National Renewable Energy Laboratory recruited CBP partners that own large portfolios of buildings. The labs provide assistance to the partners' design teams and make a business case for energy investments.

Baechler, Michael C.; Dillon, Heather E.; Bartlett, Rosemarie

2012-08-01T23:59:59.000Z

316

A compression scheme for radio data in high performance computing  

E-Print Network [OSTI]

We present a procedure for efficiently compressing astronomical radio data for high performance applications. Integrated, post-correlation data are first passed through a nearly lossless rounding step which compares the precision of the data to a generalized and calibration-independent form of the radiometer equation. This allows the precision of the data to be reduced in a way that has an insignificant impact on the data. The newly developed Bitshuffle lossless compression algorithm is subsequently applied. When the algorithm is used in conjunction with the HDF5 library and data format, data produced by the CHIME Pathfinder telescope is compressed to 28% of its original size and decompression throughputs in excess of 1 GB/s are obtained on a single core.

Masui, Kiyoshi; Connor, Liam; Deng, Meiling; Fandino, Mateus; Höfer, Carolin; Halpern, Mark; Hanna, David; Hincks, Adam D; Hinshaw, Gary; Parra, Juan Mena; Newburgh, Laura B; Shaw, J Richard; Vanderlinde, Keith

2015-01-01T23:59:59.000Z

317

High Performance Cathodes for Li-Air Batteries  

SciTech Connect (OSTI)

The overall objective of this project was to develop and fabricate a multifunctional cathode with high activities in acidic electrolytes for the oxygen reduction and evolution reactions for Li-air batteries. It should enable the development of Li-air batteries that operate on hybrid electrolytes, with acidic catholytes in particular. The use of hybrid electrolytes eliminates the problems of lithium reaction with water and of lithium oxide deposition in the cathode with sole organic electrolytes. The use of acid electrolytes can eliminate carbonate formation inside the cathode, making air breathing Li-air batteries viable. The tasks of the project were focused on developing hierarchical cathode structures and bifunctional catalysts. Development and testing of a prototype hybrid Li-air battery were also conducted. We succeeded in developing a hierarchical cathode structure and an effective bifunctional catalyst. We accomplished integrating the cathode with existing anode technologies and made a pouch prototype Li-air battery using sulfuric acid as catholyte. The battery cathodes contain a nanoscale multilayer structure made with carbon nanotubes and nanofibers. The structure was demonstrated to improve battery performance substantially. The bifunctional catalyst developed contains a conductive oxide support with ultra-low loading of platinum and iridium oxides. The work performed in this project has been documented in seven peer reviewed journal publications, five conference presentations, and filing of two U.S. patents. Technical details have been documented in the quarterly reports to DOE during the course of the project.

Xing, Yangchuan

2013-08-22T23:59:59.000Z

318

High-performance surface-micromachined inchworm actuator.  

SciTech Connect (OSTI)

This work demonstrates a polycrystalline silicon surface-micromachined inchworm actuator that exhibits high-performance characteristics such as large force ({+-}0.5 millinewtons), large velocity range (0 to {+-}4.4 mm/sec), large displacement range ({+-}100 microns), small step size ({+-}10, {+-}40 or {+-}100 nanometers), low power consumption (nanojoules per cycle), continuous bidirectional operation and relatively small area (600 x 200{micro}m{sup 2}). An in situ load spring calibrated on a logarithmic scale from micronewtons to millinewtons, optical microscopy and Michelson interferometry are used to characterize its performance. The actuator consists of a force-amplifying plate that spans two voltage-controlled clamps, and walking is achieved by appropriately sequencing signals to these three components. In the clamps, normal force is borne by equipotential rubbing counterfaces, enabling friction to be measured against load. Using different monolayer coatings, we show that the static coefficient of friction can be changed from 0.14 to 1.04, and that it is load-independent over a broad range. We further find that the static coefficient of friction does not accurately predict the force generated by the actuator and attribute this to nanometer-scale presliding tangential deflections.

Walraven, Jeremy Allen; Redmond, James Michael; Luck, David L.; Ashurst, William Robert; de Boer, Maarten Pieter; Maboudian, Roya (University of California at Berkeley, Berkeley, CA); Corwin, Alex David

2003-07-01T23:59:59.000Z

319

Calculating Energy Savings in High Performance Residential Buildings Programs: Preprint  

SciTech Connect (OSTI)

Accurate and meaningful energy savings calculations are essential for the evaluation of residential energy efficiency programs sponsored by the U.S. Department of Energy (DOE), such as the Building America Program (a public-private partnership designed to achieve significant energy savings in the residential building sector). The authors investigated the feasibility of applying existing performance analysis methodologies such as the Home Energy Rating System (HERS) and the International Energy Conservation Code (IECC) to the high performance houses constructed under Building America, which sometimes achieve whole-house energy savings in the 50-70% range. However, because Building America addresses all major end-use loads and because the technologies applied to Building America houses often exceed what is envisioned by energy codes and home-rating programs, the methodologies used in HERS and IECC have limited suitability, and a different approach was needed. The authors have researched these issues extensively over the past several years and developed a set of guidelines that draws upon work done by DOE's Energy Information Administration, the California Energy Commission, the International Code Council, RESNET, and other organizations that have developed similar methodologies to meet their needs. However, the final guidelines are tailored to provide accurate techniques for quantifying energy savings achieved by Building America to help policymakers assess the effectiveness of the program.

Hendron, B.; Rarrar-Nagy, S.; Anderson, R.; Judkoff, R.; Reeves, P.; Hancock, E.

2003-08-01T23:59:59.000Z

320

Building America Webinar: High Performance Space Conditioning Systems, Part II  

Broader source: Energy.gov [DOE]

The webinar on Nov. 18, 2014, continued the series on strategies to improve the performance of HVAC systems for low load homes and home performance retrofits.

Note: This page contains sample records for the topic "high performance cold" 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

Building America Webinar: High Performance Space Conditioning Systems, Part I  

Broader source: Energy.gov [DOE]

The webinar on Oct. 23, 2014 focused on strategies to improve the performance of HVAC systems for low load homes and home performance retrofits.

322

High performance gamma measurements of equipment retrieved from Hanford high-level nuclear waste tanks  

SciTech Connect (OSTI)

The cleanup of high level defense nuclear waste at the Hanford site presents several progressive challenges. Among these is the removal and disposal of various components from buried active waste tanks to allow new equipment insertion or hazards mitigation. A unique automated retrieval system at the tank provides for retrieval, high pressure washing, inventory measurement, and containment for disposal. Key to the inventory measurement is a three detector HPGe high performance gamma spectroscopy system capable of recovering data at up to 90% saturation (200,000 counts per second). Data recovery is based on a unique embedded electronic pulser and specialized software to report the inventory. Each of the detectors have different shielding specified through Monte Carlo simulation with the MCNP program. This shielding provides performance over a dynamic range of eight orders of magnitude. System description, calibration issues and operational experiences are discussed.

Troyer, G.L.

1997-03-17T23:59:59.000Z

323

Fibrous Fillers to Manufacture Ultra High Ash/Performance Paper  

SciTech Connect (OSTI)

The paper industry is one of the largest users of energy and emitters of CO2 in the US manufacturing industry. In addition to that, it is facing tremendous financial pressure due to lower cost imports. The fine paper industry has shrunk from 15 million tons per year production to 10 million tons per year in the last 5 years. This has resulted in mill closures and job loses. The AF&PA and the DOE formed a program called Agenda 2020 to help in funding to develop breakthrough technologies to provide help in meeting these challenges. The objectives of this project were to optimize and scale-up Fibrous Fillers technology, ready for commercial deployment and to develop ultra high ash/high performance paper using Fibrous Fillers. The goal was to reduce energy consumption, carbon footprint, and cost of manufacturing paper and related industries. GRI International (GRI) has been able to demonstrate the techno - economic feasibility and economic advantages of using its various products in both handsheets as well as in commercial paper mills. GRI has also been able to develop sophisticated models that demonstrate the effect of combinations of GRI's fillers at multiple filler levels. GRI has also been able to develop, optimize, and successfully scale-up new products for use in commercial paper mills.

Dr. VIjay K. Mathur

2009-04-30T23:59:59.000Z

324

Functionalized Materials From Elastomers to High Performance Thermoplastics  

SciTech Connect (OSTI)

Synthesis and incorporation of functionalized materials continues to generate significant research interest in academia and in industry. If chosen correctly, a functional group when incorporated into a polymer can deliver enhanced properties, such as adhesion, water solubility, thermal stability, etc. The utility of these new materials has been demonstrated in drug-delivery systems, coatings, membranes and compatibilizers. Two approaches exist to functionalize a material. The desired moiety can be added to the monomer either before or after polymerization. The polymers used range from low glass transition temperature elastomers to high glass transition temperature, high performance materials. One industrial example of the first approach is the synthesis of Teflon(reg. sign). Poly(tetrafluoroethylene) (PTFE or Teflon(reg. sign)) is synthesized from tetrafluoroethylene, a functionalized monomer. The resulting material has significant property differences from the parent, poly(ethylene). Due to the fluorine in the polymer, PTFE has excellent solvent and heat resistance, a low surface energy and a low coefficient of friction. This allows the material to be used in high temperature applications where the surface needs to be nonabrasive and nonstick. This material has a wide spread use in the cooking industry because it allows for ease of cooking and cleaning as a nonstick coating on cookware. One of the best examples of the second approach, functionalization after polymerization, is the vulcanization process used to make tires. Natural rubber (from the Hevea brasiliensis) has a very low glass transition temperature, is very tacky and would not be useful to make tires without synthetic alteration. Goodyear's invention was the vulcanization of polyisoprene by crosslinking the material with sulfur to create a rubber that was tough enough to withstand the elements of weather and road conditions. Due to the development of polymerization techniques to make cis-polyisoprene, natural rubber is no longer needed for the manufacturing of tires, but vulcanization is still utilized.

Laura Ann Salazar

2003-05-31T23:59:59.000Z

325

Distribution System Voltage Performance Analysis for High-Penetration Photovoltaics  

SciTech Connect (OSTI)

This report examines the performance of commonly used distribution voltage regulation methods under reverse power flow.

Liu, E.; Bebic, J.

2008-02-01T23:59:59.000Z

326

Java in the High Performance Computing Arena: Research, Practice and Experience  

E-Print Network [OSTI]

Java in the High Performance Computing Arena: Research, Practice and Experience Guillermo L interest in Java for High Performance Computing (HPC) is based on the appealing features of this language in HPC. Keywords: Java, High Performance Computing, Performance Evaluation, Multi-core Architectures

Fraguela, Basilio B.

327

Generalized Test Plan for the Vitrification of Simulated High-Level -Waste Calcine in the Idaho National Laboratory‘s Bench -Scale Cold Crucible Induction Melter  

SciTech Connect (OSTI)

This Preliminary Idaho National Laboratory (INL) Test Plan outlines the chronological steps required to initially evaluate the validity of vitrifying INL surrogate (cold) High-Level-Waste (HLW) solid particulate calcine in INL's Cold Crucible Induction Melter (CCIM). Its documentation and publication satisfies interim milestone WP-413-INL-01 of the DOE-EM (via the Office of River Protection) sponsored work package, WP 4.1.3, entitled 'Improved Vitrification' The primary goal of the proposed CCIM testing is to initiate efforts to identify an efficient and effective back-up and risk adverse technology for treating the actual HLW calcine stored at the INL. The calcine's treatment must be completed by 2035 as dictated by a State of Idaho Consent Order. A final report on this surrogate/calcine test in the CCIM will be issued in May 2012-pending next fiscal year funding In particular the plan provides; (1) distinct test objectives, (2) a description of the purpose and scope of planned university contracted pre-screening tests required to optimize the CCIM glass/surrogate calcine formulation, (3) a listing of necessary CCIM equipment modifications and corresponding work control document changes necessary to feed a solid particulate to the CCIM, (4) a description of the class of calcine that will be represented by the surrogate, and (5) a tentative tabulation of the anticipated CCIM testing conditions, testing parameters, sampling requirements and analytical tests. Key FY -11 milestones associated with this CCIM testing effort are also provided. The CCIM test run is scheduled to be conducted in February of 2012 and will involve testing with a surrogate HLW calcine representative of only 13% of the 4,000 m3 of 'hot' calcine residing in 6 INL Bin Sets. The remaining classes of calcine will have to be eventually tested in the CCIM if an operational scale CCIM is to be a feasible option for the actual INL HLW calcine. This remaining calcine's make-up is HLW containing relatively high concentrations of zirconium and aluminum, representative of the cladding material of the reprocessed fuel that generated the calcine. A separate study to define the CCIM testing needs of these other calcine classifications in currently being prepared under a separate work package (WP-0) and will be provided as a milestone report at the end of this fiscal year.

Vince Maio

2011-08-01T23:59:59.000Z

328

Development and Implementation of 3-D, High Speed Capacitance Tomography for Imaging Large-Scale, Cold-Flow Circulating Fluidized Bed  

SciTech Connect (OSTI)

A detailed understanding of multiphase flow behavior inside a Circulating Fluidized Bed (CFB) requires a 3-D technique capable of visualizing the flow field in real-time. Electrical Capacitance Volume Tomography (ECVT) is a newly developed technique that can provide such measurements. The attractiveness of the technique is in its low profile sensors, fast imaging speed and scalability to different section sizes, low operating cost, and safety. Moreover, the flexibility of ECVT sensors enable them to be designed around virtually any geometry, rendering them suitable to be used for measurement of solid flows in exit regions of the CFB. Tech4Imaging LLC has worked under contract with the U.S. Department of Energyâ??s National Energy Technology Laboratory (DOE NETL) to develop an ECVT system for cold flow visualization and install it on a 12 inch ID circulating fluidized bed. The objective of this project was to help advance multi-phase flow science through implementation of an ECVT system on a cold flow model at DOE NETL. This project has responded to multi-phase community and industry needs of developing a tool that can be used to develop flow models, validate computational fluid dynamics simulations, provide detailed real-time feedback of process variables, and provide a comprehensive understating of multi-phase flow behavior. In this project, a complete ECVT system was successfully developed after considering different potential electronics and sensor designs. The system was tested at various flow conditions and with different materials, yielding real-time images of flow interaction in a gas-solid flow system. The system was installed on a 12 inch ID CFB of the US Department of Energy, Morgantown Labs. Technical and economic assessment of Scale-up and Commercialization of ECVT was also conducted. Experiments conducted with larger sensors in conditions similar to industrial settings are very promising. ECVT has also the potential to be developed for imaging multi-phase flow systems in high temperature and high pressure conditions, typical in many industrial applications.

Qussai Marashdeh

2012-09-30T23:59:59.000Z

329

The performance of Lagrangian perturbation schemes at high resolution  

E-Print Network [OSTI]

We present high--spatial resolution studies of the density field as predicted by Lagrangian perturbation approximations up to the third order. The first--order approximation is equivalent to the ``Zel'dovich approximation'' for the type of initial data analyzed. The study is performed for two simple models which allow studying of typical features of the clustering process in the early non--linear regime. We calculate the initial perturbation potentials as solutions of Poisson equations algebraically, and automate this calculation for a given initial random density field. The presented models may also be useful for other questions addressed to Lagrangian perturbation solutions and for the comparison of different approximation schemes. In an accompanying paper we investigate a detailed comparison with various N--body integrators using these models (Karakatsanis \\& Buchert 1995). Results of the present paper include the following: 1. The collapse is accelerated significantly by the higher--order corrections confirming previous results by Moutarde \\etal (1991); 2. the spatial structure of the density patterns predicted by the ``Zel'dovich approximation'' differs much from those predicted by the second-- and third--order Lagrangian approximations; 3. Second--order effects amount to internal substructures such as ``second generation'' --pancakes, --filaments and --clusters, as are also observed in N--body simulations; 4. The third--order effect gives rise to substructuring of the secondary mass--shells. The hierarchy of shell--crossing singularities that form features small high--density clumps at the intersections of caustics which we interprete as gravitational fragmentation.

Thomas Buchert; Georgios Karakatsanis; Robert Klaffl; Peter Schiller

1995-10-25T23:59:59.000Z

330

High Performance Computing Modeling Advances Accelerator Science for High Energy Physics  

SciTech Connect (OSTI)

The development and optimization of particle accelerators are essential for advancing our understanding of the properties of matter, energy, space and time. Particle accelerators are complex devices whose behavior involves many physical effects on multiple scales. Therefore, advanced computational tools utilizing high-performance computing (HPC) are essential for accurately modeling them. In the past decade, the DOE SciDAC program has produced such accelerator-modeling tools, which have beem employed to tackle some of the most difficult accelerator science problems. In this article we discuss the Synergia beam-dynamics framework and its applications to high-intensity particle accelerator physics. Synergia is an accelerator simulation package capable of handling the entire spectrum of beam dynamics simulations. We present the design principles, key physical and numerical models in Synergia and its performance on HPC platforms. Finally, we present the results of Synergia applications for the Fermilab proton source upgrade, known as the Proton Improvement Plan (PIP).

Amundson, James; Macridin, Alexandru; Spentzouris, Panagiotis

2014-04-29T23:59:59.000Z

331

Building America Webinar: High Performance Space Conditioning Systems, Part I  

Broader source: Energy.gov [DOE]

The webinar will focus on strategies to improve the performance of HVAC systems for low load homes and home performance retrofits. Presenters and specific topics for this webinar will be:

332

Building America Webinar: High Performance Space Conditioning Systems, Part II  

Broader source: Energy.gov [DOE]

The webinar will continue our series on strategies to improve the performance of HVAC systems for low load homes and home performance retrofits. Presenters and specific topics for this webinar...

333

Configurable Virtualized System Environments for High Performance Computing  

SciTech Connect (OSTI)

Existing challenges for current terascale high performance computing (HPC) systems are increasingly hampering the development and deployment efforts of system software and scientific applications for next-generation petascale systems. The expected rapid system upgrade interval toward petascale scientific computing demands an incremental strategy for the development and deployment of legacy and new large-scale scientific applications that avoids excessive porting. Furthermore, system software developers as well as scientific application developers require access to large-scale testbed environments in order to test individual solutions at scale. This paper proposes to address these issues at the system software level through the development of a virtualized system environment (VSE) for scientific computing. The proposed VSE approach enables ''plug-and-play'' supercomputing through desktop-to-cluster-to-petaflop computer system-level virtualization based on recent advances in hypervisor virtualization technologies. This paper describes the VSE system architecture in detail, discusses needed tools for VSE system management and configuration, and presents respective VSE use case scenarios.

Engelmann, Christian [ORNL; Scott, Stephen L [ORNL; Ong, Hong Hoe [ORNL; Vallee, Geoffroy R [ORNL; Naughton, III, Thomas J [ORNL

2007-01-01T23:59:59.000Z

334

High-Performance Secure Database Access Technologies for HEP Grids  

SciTech Connect (OSTI)

The Large Hadron Collider (LHC) at the CERN Laboratory will become the largest scientific instrument in the world when it starts operations in 2007. Large Scale Analysis Computer Systems (computational grids) are required to extract rare signals of new physics from petabytes of LHC detector data. In addition to file-based event data, LHC data processing applications require access to large amounts of data in relational databases: detector conditions, calibrations, etc. U.S. high energy physicists demand efficient performance of grid computing applications in LHC physics research where world-wide remote participation is vital to their success. To empower physicists with data-intensive analysis capabilities a whole hyperinfrastructure of distributed databases cross-cuts a multi-tier hierarchy of computational grids. The crosscutting allows separation of concerns across both the global environment of a federation of computational grids and the local environment of a physicist’s computer used for analysis. Very few efforts are on-going in the area of database and grid integration research. Most of these are outside of the U.S. and rely on traditional approaches to secure database access via an extraneous security layer separate from the database system core, preventing efficient data transfers. Our findings are shared by the Database Access and Integration Services Working Group of the Global Grid Forum, who states that "Research and development activities relating to the Grid have generally focused on applications where data is stored in files. However, in many scientific and commercial domains, database management systems have a central role in data storage, access, organization, authorization, etc, for numerous applications.” There is a clear opportunity for a technological breakthrough, requiring innovative steps to provide high-performance secure database access technologies for grid computing. We believe that an innovative database architecture where the secure authorization is pushed into the database engine will eliminate inefficient data transfer bottlenecks. Furthermore, traditionally separated database and security layers provide an extra vulnerability, leaving a weak clear-text password authorization as the only protection on the database core systems. Due to the legacy limitations of the systems’ security models, the allowed passwords often can not even comply with the DOE password guideline requirements. We see an opportunity for the tight integration of the secure authorization layer with the database server engine resulting in both improved performance and improved security. Phase I has focused on the development of a proof-of-concept prototype using Argonne National Laboratory’s (ANL) Argonne Tandem-Linac Accelerator System (ATLAS) project as a test scenario. By developing a grid-security enabled version of the ATLAS project’s current relation database solution, MySQL, PIOCON Technologies aims to offer a more efficient solution to secure database access.

Matthew Vranicar; John Weicher

2006-04-17T23:59:59.000Z

335

Revisit of Energy Use and Technologies of High Performance Buildings  

E-Print Network [OSTI]

Energy performance of LEED for new construction buildings:New Buildings Institute.New Buildings Institute. 2013. Buildings database, http://

Li Ph.D., Cheng

2014-01-01T23:59:59.000Z

336

High performance distributed simulation for interactive simulated vascular reconstruction  

E-Print Network [OSTI]

performance. 1 Introduction Interactive simulation environments are dynamic systems that combine simula- tion.1 Performance of interactive simulation environments The most important factor in the performance of a dynamic dynamic simulation environment. 1 1 2 2 3 visualization rendering simulation time rendering delay

Amsterdam, Universiteit van

337

Providing Green SLAs in High Performance Computing Clouds  

E-Print Network [OSTI]

Abstract—Demand for clean products and services is increasing as society is becoming increasingly aware of climate change. In response, many enterprises are setting explicit sustainability goals and implementing initiatives to reduce carbon emissions. Quantification and disclosure of such goals and initiatives have become important marketing tools. As enterprises and individuals shift their workloads to the cloud, this drive toward quantification and disclosure will lead to demand for quantifiable green cloud services. Thus, we argue that cloud providers should offer a new class of green services, in addition to existing (energy-sourceoblivious) services. This new class would provide clients with explicit service-level agreements (which we call Green SLAs) for the percentage of renewable energy used to run their workloads. In this paper, we first propose an approach for High Performance Computing cloud providers to offer such a Green SLA service. Specifically, each client job specifies a Green SLA, which is the minimum percentage of green energy that must be used to run the job. The provider earns a premium for meeting the Green SLA, but is penalized if it accepts the job but violates the Green SLA. We then propose (1) a power distribution and control infrastructure that uses a small amount of hardware to support Green SLAs, (2) an optimization-based framework for scheduling jobs and power sources that maximizes provider profits while respecting Green SLAs, and (3) two scheduling policies based on the framework. We evaluate our framework and policies extensively through simulations. Our main results show the tradeoffs between our policies, and their advantages over simpler greedy heuristics. We conclude that a Green SLA service that uses our policies would enable the provider to attract environmentally conscious clients, especially those who require strict guarantees on their use of green energy. I.

Md. E. Haque; Kien Le; Íńigo Goiri; Ricardo Bianchini; Thu D. Nguyen

338

Cold isopressing method  

DOE Patents [OSTI]

A cold isopressing method in which two or more layers of material are formed within an isopressing mold. One of the layers consists of a tape-cast film. The layers are isopressed within the isopressing mold, thereby to laminate the layers and to compact the tape-cast film. The isopressing mold can be of cylindrical configuration with the layers being coaxial cylindrical layers. The materials used in forming the layers can contain green ceramic materials and the resultant structure can be fired and sintered as necessary and in accordance with known methods to produce a finished composite, ceramic structure. Further, such green ceramic materials can be of the type that are capable of conducting hydrogen or oxygen ions at high temperature with the object of utilizing the finished composite ceramic structure as a ceramic membrane element.

Chen, Jack C. (Getzville, NY); Stawisuck, Valerie M. (North Tonawanda, NY); Prasad, Ravi (East Amherst, NY)

2003-01-01T23:59:59.000Z

339

NREL Provides Guidance to Improve Thermal Comfort in High-Performance Homes (Fact Sheet)  

SciTech Connect (OSTI)

This technical highlight describes NREL research to develop recommendations on HVAC system design and operating conditions to achieve optimal thermal comfort in high-performance homes. Researchers at the National Renewable Energy Laboratory (NREL) have developed recommendations to help residential heating, cooling, and ventilation (HVAC) designers select optimal supply inlet size and system operating conditions to maintain good thermal comfort in low heating and cooling load homes. This can be achieved by using high sidewall supply air jets to create proper combinations of air temperature and air motion in the occupied zone of the conditioned space. The design of air distribution systems for low-load homes is an integral part of residential system research and development in systems integration. As American homes become more energy efficient, space conditioning systems will be downsized. The downsizing will reach the point where the air flow volumes required to meet the remaining heating and cooling loads may be too small to maintain uniform room air mixing, which can affect thermal comfort. NREL researchers performed a detailed study evaluating the performance of high sidewall supply air jets over a wide range of parameters including supply air temperature, supply air velocity, and supply inlet size. They found that in heating mode, low and intermediate supply temperatures of 95 F (308 K) and 105 F (314 K) maintained acceptable comfort levels at lower fan powers than can be achieved at 120 F (322 K) supply temperatures. For the high supply temperature of 120 F (322 K), higher fan powers (supply velocities) were required to overcome buoyancy effects and reach a good mixing in the room. In cooling mode, a supply temperature of 55 F (286 K) provided acceptable comfort levels. A small supply inlet of 8-in. (0.2 m) x 1-in. (0.025 m) is recommended in both heating and cooling modes. Computational fluid dynamics was used to model heat transfer and airflow in the room. The technique consists of using the model output to determine how well the supply air mixes with the room air. Thermal comfort is evaluated by determining the Air Diffusion Performance Index (ADPI). The level of comfort is evaluated by monitoring air temperature and air velocity in more than 600,000 control volumes that make up the occupied zone of a single room. The room has an acceptable comfort level when more than 70% of the control volumes meet the comfort criteria on both air temperature and air velocity. Figure 1 illustrates the plots of acceptable draft temperature, which is between -3 (-1.7) and 2 F (1.1 K) for two supply velocities of 394 fpm (2 m/s) (a) and 788 fpm (4 m/s) (b) when the room was supplied by 55 F (286 K) air. The plots show the distribution at selected cross-sections along the room. Colored regions on each cross-section are considered comfortable (blue regions are on the cold side and red regions are on the warm side). Regions of acceptable draft temperature are larger at low velocity and decrease as the velocity increases. As a result, the supply velocity of 394 fpm (2 m/s) provided higher comfort level than the supply velocity of 788 fpm (4 m/s). Work is in progress at NREL to extend this research to evaluate additional configurations and to integrate this system into a whole-house context.

Not Available

2012-01-01T23:59:59.000Z

340

Project Profile: Maintenance-Free Stirling Engine for High-Performance...  

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

Maintenance-Free Stirling Engine for High-Performance Dish CSP Project Profile: Maintenance-Free Stirling Engine for High-Performance Dish CSP Image of a prototype 30-kW Stirling...

Note: This page contains sample records for the topic "high performance cold" 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

A Facile Approach Using MgCl2 to Formulate High Performance Mg2...  

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

Using MgCl2 to Formulate High Performance Mg2+ Electrolytes for Rechargeable Mg Batteries. A Facile Approach Using MgCl2 to Formulate High Performance Mg2+ Electrolytes for...

342

Multi-scale problems, high performance computing and hybrid numerical methods  

E-Print Network [OSTI]

Multi-scale problems, high performance computing and hybrid numerical methods G. Balarac, G of High Performance Computing G. Balarac LEGI, CNRS and Universit´e de Grenoble, BP 53, 38041 Grenoble

Cottet, Georges-Henri

343

Multi-scale problems, high performance computing and hybrid numerical methods  

E-Print Network [OSTI]

Multi-scale problems, high performance computing and hybrid numerical methods G. Balarac, G of High Performance Computing (HPC) is not anymore restricted to academia and scientific grand challenges

Paris-Sud XI, Université de

344

A scalable silicon photonic chip-scale optical switch for high performance computing systems  

E-Print Network [OSTI]

A scalable silicon photonic chip-scale optical switch for high performance computing systems-scale optical switch for scalable interconnect network in high performance computing systems. The proposed

Yoo, S. J. Ben

345

Participation by Columbia Researchers in Shared Central High Performance Computing (HPC) Resources  

E-Print Network [OSTI]

) to create a shared central high performance computing (HPC) cluster, ColumbiaParticipation by Columbia Researchers in Shared Central High Performance Computing (HPC) Resources Shared Research Computing Policy Advisory Committee (SRCPAC) Chair, Professor

Champagne, Frances A.

346

Investigating the Mobility of Light Autonomous Tracked Vehicles Using a High Performance Computing  

E-Print Network [OSTI]

Investigating the Mobility of Light Autonomous Tracked Vehicles Using a High Performance Computing limiting the scope and impact of high performance computing (HPC). This scenario is rapidly changing due

347

Building America Best Practices Series, Volume 7.1 - High-Performance...  

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

Series, Volume 7.1 - High-Performance Home Technologies: Guide to Determining Climate Regions by County Building America Best Practices Series, Volume 7.1 - High-Performance Home...

348

High Performance Building Facade Solutions PIER Final Project Report  

E-Print Network [OSTI]

Subject responses to electrochromic windows. Energy andhttp://windows.lbl.gov/comm_perf/Electrochromic/refs/LBNL_energy performance of electrochromic windows controlled for

Lee, Eleanor

2011-01-01T23:59:59.000Z

349

High Performance Building Facade Solutions PIER Final Project Report  

E-Print Network [OSTI]

compare systems and understand energy trade- offs for façadecompare systems and understand energy trade- offs for façadeoptimize energy-demand-daylight-comfort performance trade-

Lee, Eleanor

2011-01-01T23:59:59.000Z

350

Rebuilding It Better: Greensburg, Kansas, High Performance Buildings...  

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

2007-May 2009 From Tragedy to Triumph: Rebuilding Greensburg, Kansas To Be a 100% Renewable Energy City: Preprint Data Preparation Process for the Buildings Performance Database...

351

Webinar: High Performance Enclosure Strategies: Part I. Existing Homes  

Broader source: Energy.gov [DOE]

The webinar will focus on specific Building America projects that have studied technical solutions to retrofit building enclosures to improve energy and durability performance. Presenters will...

352

Flourescent Pigments for High-Performance Cool Roofing and Facades...  

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

class of dark-colored pigments for cool metal roof and faade coatings that incorporate near-infrared fluorescence and reflectance to improve energy performance. Image: PPG...

353

High Performance, Low Cost Hydrogen Generation from Renewable...  

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

Performance, Low Cost Hydrogen Generation from Renewable Energy 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer...

354

Approaches To Crisis Prevention In Lean Product Development By High Performance Teams And Through Risk Management  

E-Print Network [OSTI]

This thesis investigates crisis prevention in lean product development, focusing on high performance teams and risk management methods.

Oehmen, Josef

355

Performance and Reliability of Bonded Interfaces for High-Temperature Packaging (Presentation)  

SciTech Connect (OSTI)

This presentation reviews the status of the performance and reliability of bonded interfaces for high-temperature packaging.

Devoto, D.

2014-06-01T23:59:59.000Z

356

Handbook for Planning and Conducting Charrettes for High-Performance Projects: Second Edition  

SciTech Connect (OSTI)

This handbook furnishes guidance for planning and conducting a high-performance building charrette, sometimes called a "greening charrette."

Lindsay, G.; Todd, J. A.; Hayter, S. J.; Ellis, P. G.

2009-09-01T23:59:59.000Z

357

High performance computing and the simplex method Julian Hall, Qi Huangfu and Edmund Smith  

E-Print Network [OSTI]

High performance computing and the simplex method Julian Hall, Qi Huangfu and Edmund Smith School of Mathematics University of Edinburgh 12th April 2011 High performance computing and the simplex method #12;The... ... but methods for all three depend on it! High performance computing and the simplex method 1 #12;Overview · LP

Hall, Julian

358

Third International Workshop on Software Engineering for High Performance Computing (HPC) Applications  

E-Print Network [OSTI]

Third International Workshop on Software Engineering for High Performance Computing (HPC, and financial modeling. The TOP500 website (http://www.top500.org) lists the top 500 high performance computing to define new ways of measuring high performance computing systems that take into account not only the low

Carver, Jeffrey C.

359

For Immediate Release AUB to develop its high performance computing capacities in the  

E-Print Network [OSTI]

For Immediate Release AUB to develop its high performance computing capacities in the service steps to become a high performance computing center that will be able to process massive amounts thousands of servers. According to Wikipedia, supercomputers, or high performance computing, play

Shihadeh, Alan

360

Modeling and Simulation Environment for Photonic Interconnection Networks in High Performance Computing  

E-Print Network [OSTI]

at the scale of high performance computer clusters and warehouse scale data centers, system level simulations and results for rack scale photonic interconnection networks for high performance computing. Keywords: optical to the newsworthy power consumption [3], latency [4] and bandwidth challenges [5] of high performance computing (HPC

Bergman, Keren

Note: This page contains sample records for the topic "high performance cold" 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

Judging the Impact of Conference and Journal Publications in High Performance Computing  

E-Print Network [OSTI]

Judging the Impact of Conference and Journal Publications in High Performance Computing dimensions that count most, conferences are superior. This is particularly true in high performance computing and are never published in journals. The area of high performance computing is broad, and we divide venues

Zhou, Yuanyuan

362

High Performance Computing in the Life/Medical SciencesVirginiaBioinformaticsInstitute  

E-Print Network [OSTI]

High Performance Computing in the Life/Medical SciencesVirginiaBioinformaticsInstitute 2 week in high performance computing and data intensive computing 4. basic knowledge of relational databases (i Program Dates: July 17 - 25 Application deadline is March 30, 2012 High Performance Computing in the Life

Virginia Tech

363

10 January 2009 PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING High Performance Computing in Remote Sensing  

E-Print Network [OSTI]

10 January 2009 PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING High Performance Computing in Remote Book ReviewBook Review High Performance Computing in Remote Sensing introduces the most recent advances in the incorporation of the high-performance computing (HPC) paradigm in remote sensing missions. Eighteen well

Plaza, Antonio J.

364

A Multi-core High Performance Computing Framework for Probabilistic Solutions of  

E-Print Network [OSTI]

1 A Multi-core High Performance Computing Framework for Probabilistic Solutions of Distribution. In this paper we developed a generally applicable high performance computing framework for Monte Carlo--Distribution systems, high performance comput- ing, Monte Carlo simulation, probabilistic load flow, renewable energy

Franchetti, Franz

365

PRESENT AND FUTURE OF HIGH PERFORMANCE COMPUTING Trends, Challenges, and Opportunities  

E-Print Network [OSTI]

PRESENT AND FUTURE OF HIGH PERFORMANCE COMPUTING Trends, Challenges, and Opportunities November 17 laboratories of the HPC facilities and resources. First, the EPFL high performance computing facilities of Modeling and Simulation through High Performance Computing. Leading research activities of various groups

Ceragioli, Francesca

366

Event Services for High Performance Computing Greg Eisenhauer Fabian E. Bustamante Karsten Schwan  

E-Print Network [OSTI]

Event Services for High Performance Computing Greg Eisenhauer Fabi´an E. Bustamante Karsten Schwan,fabianb,schwang@cc.gatech.edu Abstract The Internet and the Grid are changing the face of high performance computing. Rather than tightly computing has been a strong fo- cus of research in high performance computing. This has resulted

Kuzmanovic, Aleksandar

367

High Performance Computing Environment P.G.Senapathy Centre for Computing Resources,  

E-Print Network [OSTI]

High Performance Computing Environment P.G.Senapathy Centre for Computing Resources, Computer Centre, IIT Madras. User id Requisition Form for High Performance Computing on Virgo Super Cluster.iitm.ac.in for information on High Performance Computing Environment. Email your suggestions/problems to hpce@iitm.ac.in. 11

Krishnapura, Nagendra

368

UNIVERSITY OF SOUTHERN CALIFORNIA CSCI 653 (High Performance Computing and Simulations) : Fall 2013  

E-Print Network [OSTI]

UNIVERSITY OF SOUTHERN CALIFORNIA CSCI 653 (High Performance Computing and Simulations) : Fall 2013 Performance Computing and Simulations). My PhD work is in the area of resiliency for future Exascale High. 2 DESCRIPTION OF AN HPCS APPLICATION Simulation of Large Scale High Performance Computing System

Southern California, University of

369

MAUI HIGH PERFORMANCE COMPUTING CENTER 550 Lipoa Parkway, Kihei-Maui, HI 96753  

E-Print Network [OSTI]

MAUI HIGH PERFORMANCE COMPUTING CENTER i 550 Lipoa Parkway, Kihei-Maui, HI 96753 (808) 879-5077 · Fax: (808) 879-5018 E-mail: info@mhpcc.hpc.mil URL: www.mhpcc.hpc.mil MAUI HIGH PERFORMANCE COMPUTING This is the fourteenth annual edition of Maui High Performance Computing Center's (MHPCC) Application Briefs which

Olsen, Stephen L.

370

High Performance Computing (HPC) Survey 1. Choose the category that best describes you  

E-Print Network [OSTI]

High Performance Computing (HPC) Survey 1. Choose the category that best describes you Response on your (home or work) computer to access the High Performance Computing Facilities (HPC) - (tick all High Performance Computing (HPC) Facilities? Response Percent Response Count Daily 26.7% 23 Weekly 27

Martin, Stephen John

371

A Pilot Study to Evaluate Development Effort for High Performance Computing  

E-Print Network [OSTI]

1 A Pilot Study to Evaluate Development Effort for High Performance Computing Victor Basili1 the development time for programs written for high performance computers (HPC). To attack this relatively novel students in a graduate level High Performance Computing class at the University of Maryland. We collected

Basili, Victor R.

372

1st International Workshop on High Performance Computing, Networking and Analytics for the Power Grid  

E-Print Network [OSTI]

1st International Workshop on High Performance Computing, Networking and Analytics for the Power Transient Stability" #12;1st International Workshop on High Performance Computing, Networking and Analytics (University of Vermont). "Developing a Dynamic Model of Cascading Failure for High Performance Computing using

373

An AWGR based Low-Latency Optical Switch for Data Centers and High Performance Computing Systems  

E-Print Network [OSTI]

i An AWGR based Low-Latency Optical Switch for Data Centers and High Performance Computing Systems based optical switch for data centers and high performance computing systems that builds upon several for Data Centers and High Performance Computing Systems ..i ABSTRACT .....................................

Kolner, Brian H.

374

ViperVM: a Runtime System for Parallel Functional High-Performance Computing on Heterogeneous Architectures  

E-Print Network [OSTI]

.henry@labri.fr Abstract The current trend in high-performance computing is to use het- erogeneous architectures (i-performance computer design has shifted from high-frequency multi-core architectures to heterogeneous archi- tecturesViperVM: a Runtime System for Parallel Functional High-Performance Computing on Heterogeneous

Paris-Sud XI, Université de

375

High-Performance Sorbents for Carbon Dioxide Capture from Air  

SciTech Connect (OSTI)

This project has focused on capture of CO{sub 2} from ambient air (“air capture”). If this process is technically and economically feasible, it could potentially contribute to net reduction of CO{sub 2} emissions in ways that are complementary to better developed techniques for CO{sub 2} from concentrated point sources. We focused on cyclic adsorption processes for CO{sub 2} capture from air in which the entire cycle is performed at moderate temperatures. The project involved both experimental studies of sorbent materials and process level modeling of cyclic air capture processes. In our experimental work, a series of amine-functionalized silica adsorbents were prepared and characterized to determine the impact of molecular architecture on CO{sub 2} capture. Some key findings were: • Amine functionalized silicas can be prepared with high enough CO{sub 2} capacities under ambient conditions to merit consideration for use in air capture processes. • Primary amines are better candidates for CO{sub 2} capture than secondary or tertiary amines, both in terms of amine efficiency for CO{sub 2} adsorption and enhanced water affinity. • Mechanistic understanding of degradation of these materials can enable control of molecular architecture to significantly improve material stability. Our process modeling work provided the first publically available cost and energy estimates for cyclic adsorption processes for air capture of CO{sub 2}. Some key findings were: • Cycles based on diurnal ambient heating and cooling cannot yield useful purities or amounts of captured CO{sub 2}. • Cycles based on steam desorption at 110 oC can yield CO{sub 2} purities of ~88%. • The energy requirements for cycles using steam desorption are dominated by needs for thermal input, which results in lower costs than energy input in the form of electricity. Cyclic processes with operational costs of less than $100 tCO{sub 2}-net were described, and these results point to process and material improvements that could substantially reduce these costs. The most critical conclusions from our work are that (i) CO{sub 2} capture from ambient air using moderate temperature cyclic adsorption processes is technically feasible and (ii) the operational costs of realistic versions of these processes are moderate enough to encourage future development of this technology. Because of the very modest net investment that has been made in R&D associated with this approach from all sources worldwide (relative to the massive public and private investment that has been made in technologies for CO{sub 2} from concentrated point sources), our results strongly suggest that continued development of air capture is justified.

Sholl, David; Jones, Christopher

2013-03-13T23:59:59.000Z

376

Development and Performance Evaluation of High Temperature Concrete for Thermal Energy Storage for Solar Power Generation  

SciTech Connect (OSTI)

Thermal energy can be stored by the mechanism of sensible or latent heat or heat from chemical reactions. Sensible heat is the means of storing energy by increasing the temperature of the solid or liquid. Since the concrete as media cost per kWhthermal is $1, this seems to be a very economical material to be used as a TES. This research is focused on extending the concrete TES system for higher temperatures (500 Ă?ÂşC to 600 Ă?ÂşC) and increasing the heat transfer performance using novel construction techniques. To store heat at high temperature special concretes are developed and tested for its performance. The storage capacity costs of the developed concrete is in the range of $0.91-$3.02/kWhthermal Two different storage methods are investigated. In the first one heat is transported using molten slat through a stainless steel tube and heat is transported into concrete block through diffusion. The cost of the system is higher than the targeted DOE goal of $15/kWhthermal The increase in cost of the system is due to stainless steel tube to transfer the heat from molten salt to the concrete blocks.The other method is a one-tank thermocline system in which both the hot and cold fluid occupy the same tank resulting in reduced storage tank volume. In this model, heated molten salt enters the top of the tank which contains a packed bed of quartzite rock and silica sand as the thermal energy storage (TES) medium. The single-tank storage system uses about half the salt that is required by the two-tank system for a required storage capacity. This amounts to a significant reduction in the cost of the storage system. The single tank alternative has also been proven to be cheaper than the option which uses large concrete modules with embedded heat exchangers. Using computer models optimum dimensions are determined to have an round trip efficiency of 84%. Additionally, the cost of the structured concrete thermocline configuration provides the TES capacity cost of $33.80$/kWhthermal compared with $30.04/kWhthermal for a packed-bed thermocline (PBTC) configuration and $46.11/kWhthermal for a two-tank liquid configuration.

R. Panneer Selvam, Micah Hale and Matt strasser

2013-03-31T23:59:59.000Z

377

High Performance Building Facade Solutions PIER Final Project Report  

E-Print Network [OSTI]

to attain the ambitious net zero energy goals defined bywere found to yield net zero energy levels of performance inA/ E teams to reach net zero energy goals by enabling use of

Lee, Eleanor

2011-01-01T23:59:59.000Z

378

Home Performance with Energy Star High Efficiency Measure Incentive (HEMI)  

Broader source: Energy.gov [DOE]

The New York State Research and Development Authority (NYSERDA) offers an incentive for homeowners of 1-4 homes that participate in the Home Performance with Energy Star program. The program...

379

Techniques of High Performance Reservoir Simulation for Unconventional Challenges  

E-Print Network [OSTI]

The quest to improve the performance of reservoir simulators has been evolving with the newly encountered challenges of modeling more complex recovery mechanisms and related phenomena. Reservoir subsidence, fracturing and fault reactivation etc...

Wang, Yuhe

2013-12-05T23:59:59.000Z

380

Moisture and Structural Analysis for High Performance Hybrid Wall Assemblies  

SciTech Connect (OSTI)

This report describes the work conducted by the Building Science Corporation (BSC) Building America Research Team's 'Energy Efficient Housing Research Partnerships' project. Based on past experience in the Building America program, they have found that combinations of materials and approaches---in other words, systems--usually provide optimum performance. No single manufacturer typically provides all of the components for an assembly, nor has the specific understanding of all the individual components necessary for optimum performance.

Grin, A.; Lstiburek, J.

2012-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "high performance cold" 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

Building America Top Innovations 2013 Profile ? High-Performance...  

Energy Savers [EERE]

in Federal rulemaking procedures. This work also documented the high duct system static pressure problem endemic to the majority of residential HVAC systems. It has led to...

382

DOE Announces Webinars on High Performance Space Conditioning...  

Energy Savers [EERE]

typically required. You can also watch archived webinars and browse previously aired videos, slides, and transcripts. Upcoming Webinars October 23: Live Webinar on High...

383

SIMS analysis of high-performance accelerator niobium | OSTI...  

Office of Scientific and Technical Information (OSTI)

accelerator niobium Re-direct Destination: Niobium is used to fabricate superconducting radio frequency accelerator modules because of its high critical temperature,...

384

Evaluating Performance, Power, and Cooling in High Performance Computing (HPC) Data Centers  

SciTech Connect (OSTI)

This chapter explores current research focused on developing our understanding of the interrelationships involved with HPC performance and energy management. The first section explores data center instrumentation, measurement, and performance analysis techniques, followed by a section focusing on work in data center thermal management and resource allocation. This is followed by an exploration of emerging techniques to identify application behavioral attributes that can provide clues and advice to HPC resource and energy management systems for the purpose of balancing HPC performance and energy efficiency.

Evans, Jeffrey; Sandeep, Gupta; Karavanic, Karen; Marquez, Andres; Varsamopoulos, Girogios

2012-01-24T23:59:59.000Z

385

A High-Performance Storage System for the LHCb Experiment  

E-Print Network [OSTI]

This document describes the architecture of the LHCb storage system, and discusses the key criteria which formed the basis of the evaluation of the system. The configuration of the current solution and its capabilities are also described, accompanied by performance figures.

Suman Cherukuwada, Sai

2007-01-01T23:59:59.000Z

386

Key Elements of and Materials Performance Targets for Highly  

E-Print Network [OSTI]

and Technology, Hřgskoleringen 7A, NO-7491 Trondheim, Norway Abstract The thermal performance of windows of the transmission losses though the building envelope, even if their area fraction of the envelope is far less. The reason for this can be found by comparing the thermal transmittance (U-factor) of windows to the U

387

"Exploring damage management of high performance metallic alloys in critical  

E-Print Network [OSTI]

corrosion, hydrogen embrittlement and elevated temperature; adversely affect the performance of structures Embrittlement Safe, durable, and economic containment of hydrogen in energy systems is challenging because H2, broadly attributed to hydrogen embrittlement, and introduces complex time-cycle dependent cracking

Acton, Scott

388

High performance batteries with carbon nanomaterials and ionic liquids  

DOE Patents [OSTI]

The present invention is directed to lithium-ion batteries in general and more particularly to lithium-ion batteries based on aligned graphene ribbon anodes, V.sub.2O.sub.5 graphene ribbon composite cathodes, and ionic liquid electrolytes. The lithium-ion batteries have excellent performance metrics of cell voltages, energy densities, and power densities.

Lu, Wen (Littleton, CO)

2012-08-07T23:59:59.000Z

389

Structural Engineering Seminar Series Ultra-High Performance Concrete Construction  

E-Print Network [OSTI]

performance and resistance against environmental degradation. UHPC is defined as a concrete fiber composite for Our Future Infrastructure? by Kay Wille, PhD Assistant Professor, Civil and Environmental Engineering and conference proceedings. It has been used in various forms in structural and architectural elements, as a bond

Kamat, Vineet R.

390

Enhanced High Temperature Performance of NOx Storage/Reduction...  

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

1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation ace026peden2011o.pdf More Documents & Publications Enhanced High...

391

Transmission System Performance Analysis for High-Penetration Photovoltaics  

SciTech Connect (OSTI)

This study is an assessment of the potential impact of high levels of penetration of photovoltaic (PV) generation on transmission systems. The effort used stability simulations of a transmission system with different levels of PV generation and load.

Achilles, S.; Schramm, S.; Bebic, J.

2008-02-01T23:59:59.000Z

392

On the use of high performance annular fuel in PWRs  

E-Print Network [OSTI]

Recently, MIT's Center for Advanced Nuclear Energy Systems developed a new high burnup annular fuel that features both internal and external cooling. Implementation of this fuel design in current pressurized water reactors ...

Feng, Bo, Ph. D. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

393

18 INTERNATIONAL CONFERENCE ON HIGH PERFORMANCE COMPUTING (HIPC 2011)  

E-Print Network [OSTI]

of the conference, 4 workshops will be hosted on Sunday, December 18, 2011. > Workshop on Energy Efficient High the state of-the-art in HPC platforms and technologies, for discussing best practices and for exchanging

Choudhary, Alok

394

Performance Assessment of Pressurized Stairs in High Rise Buildings   

E-Print Network [OSTI]

Pressurized stair cases are an important part of the fire safety strategy of high rise buildings. Long egress times are compensated by creating safe environments within egress staircases allowing the displacement time ...

Bellido, Carlos; Quiroz, Antonio; Panizo, Alfonso; Torero, Jose L

2008-12-17T23:59:59.000Z

395

Reduced Call-Backs with High Performance Production Builders...  

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

lowest call-back rate of any community he had worked on. He credited the third-party HERS inspections and testing for keeping the quality of work high and catching problems...

396

Development of a Beowulf-Class High Performance Computing System for Computational Science Applications  

E-Print Network [OSTI]

Using Beowulf cluster computing technology, the Ateneo High Performance Computing Group has developed a high performance computing system consisting of eight compute nodes. Called the AGILA HPCS this Beowulf cluster computer is designed for computational science applications. In this paper, we present the motivation for the AGILA HPCS and some results on its performance evaluation.

Rafael Saldańa; Jerrold Garcia; Felix Muga Ii; William Yu

2001-01-01T23:59:59.000Z

397

Cogeneration and community design: performance based model for optimization of the design of U.S. residential communities utilizing cogeneration systems in cold climates  

E-Print Network [OSTI]

typology, 5) envelope and building systems' efficiencies, 6) renewable energy utilization, 7) cogeneration system type, 8) size, and 9) operation strategy. Based on this, combinations of design characteristics achieving an optimum system performance were...

Rashed Ali Atta, Hazem Mohamed

2009-06-02T23:59:59.000Z

398

Reliable High Performance Peta- and Exa-Scale Computing  

SciTech Connect (OSTI)

As supercomputers become larger and more powerful, they are growing increasingly complex. This is reflected both in the exponentially increasing numbers of components in HPC systems (LLNL is currently installing the 1.6 million core Sequoia system) as well as the wide variety of software and hardware components that a typical system includes. At this scale it becomes infeasible to make each component sufficiently reliable to prevent regular faults somewhere in the system or to account for all possible cross-component interactions. The resulting faults and instability cause HPC applications to crash, perform sub-optimally or even produce erroneous results. As supercomputers continue to approach Exascale performance and full system reliability becomes prohibitively expensive, we will require novel techniques to bridge the gap between the lower reliability provided by hardware systems and users unchanging need for consistent performance and reliable results. Previous research on HPC system reliability has developed various techniques for tolerating and detecting various types of faults. However, these techniques have seen very limited real applicability because of our poor understanding of how real systems are affected by complex faults such as soft fault-induced bit flips or performance degradations. Prior work on such techniques has had very limited practical utility because it has generally focused on analyzing the behavior of entire software/hardware systems both during normal operation and in the face of faults. Because such behaviors are extremely complex, such studies have only produced coarse behavioral models of limited sets of software/hardware system stacks. Since this provides little insight into the many different system stacks and applications used in practice, this work has had little real-world impact. My project addresses this problem by developing a modular methodology to analyze the behavior of applications and systems during both normal and faulty operation. By synthesizing models of individual components into a whole-system behavior models my work is making it possible to automatically understand the behavior of arbitrary real-world systems to enable them to tolerate a wide range of system faults. My project is following a multi-pronged research strategy. Section II discusses my work on modeling the behavior of existing applications and systems. Section II.A discusses resilience in the face of soft faults and Section II.B looks at techniques to tolerate performance faults. Finally Section III presents an alternative approach that studies how a system should be designed from the ground up to make resilience natural and easy.

Bronevetsky, G

2012-04-02T23:59:59.000Z

399

High-performance computer system installed at Los Alamos National  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr FlickrGuidedCH2MLLC High-Rate, High-Capacityand Modeling

400

High Performance and Sustainable Buildings Guidance | Department of Energy  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG | Department ofHTS Cable Projects HTSSeparationHelping to Finance3HighHigh

Note: This page contains sample records for the topic "high performance cold" 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

MICMIC--GPU:GPU: Hi hHi h P f C tiP f C tiHighHigh--Performance ComputingPerformance Computing  

E-Print Network [OSTI]

MICMIC--GPU:GPU: Hi hHi h P f C tiP f C tiHighHigh--Performance ComputingPerformance Computing 2011 but wait, there is more to this..... #12;Amdahl's LawAmdahl's Law Governs theoretical speedupp p P Medical Imaging 2011 MIC-GPU 5 Amdahl's LawAmdahl's Law Governs theoretical speedupp p P P P P S )1( 1

Mueller, Klaus

402

High-Performance Architectures for Embedded Memory Systems  

E-Print Network [OSTI]

for parallel systems ­ optimized for technical and/or commercial workloads ­ SIMD multimedia extensions (VIS (image/video processing) · Small size, battery operated devices · Media processing functions for continuous media data-types ­ fine-grain parallelism ­ coarse-grain parallelism ­ high-instruction reference

Kozyrakis, Christos

403

High Performance VCSEL-based Sensors for Use with UAVs  

E-Print Network [OSTI]

are not well understood Aneja et al. 2008 #12;Fracking and Methane Emissions · Less CO2 emissions than battles against fracking · Local media published levels of 10-20 ppm well facility well homes #12;Methane emissions at fracking site are high ­ Overall levels of 3-4 ppm ­ No strong height dependence ­ Large plumes

Petta, Jason

404

High Performance Batteries Based on Hybrid Magnesium and Lithium Chemistry  

SciTech Connect (OSTI)

Magnesium and lithium (Mg/Li) hybrid batteries that combine Mg and Li electrochemistry, consisting of a Mg anode, a lithium-intercalation cathode and a dual-salt electrolyte with both Mg2+ and Li+ ions, were constructed and examined in this work. Our results show that hybrid (Mg/Li) batteries were able to combine the advantages of Li-ion and Mg batteries, and delivered outstanding rate performance (83% for capacities at 15C and 0.1C) and superior cyclic stability (~5% fade after 3000 cycles).

Cheng, Yingwen; Shao, Yuyan; Zhang, Jiguang; Sprenkle, Vincent L.; Liu, Jun; Li, Guosheng

2014-01-01T23:59:59.000Z

405

Buildings Energy Data Book: 9.4 High Performance Buildings  

Buildings Energy Data Book [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data CenterEnergyAuthorization for(EV) Road UserNatural12 Building Performance31

406

Sandia National Laboratories: high-perform-ance computing  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia,evaluatingfull moduleresourcesperform-ance computing New

407

An integrated performance model for high temperature gas cooled reactor coated particle fuel  

E-Print Network [OSTI]

The performance of coated fuel particles is essential for the development and deployment of High Temperature Gas Reactor (HTGR) systems for future power generation. Fuel performance modeling is indispensable for understanding ...

Wang, Jing, 1976-

2004-01-01T23:59:59.000Z

408

RAPID for high-performance computing systems: architecture and performance evaluation  

E-Print Network [OSTI]

Karanth Kodi and Ahmed Louri The limited bandwidth and the increase in power dissipation at longer power consump- tion, and enhances scalability. We also present two cost-effective design alternatives RAPID architecture and compare it to several electrical HPCS interconnects. Based on the performance

Louri, Ahmed

409

Controlling the Ratchet Effect for Cold Atoms  

E-Print Network [OSTI]

Low-order quantum resonances manifested by directed currents have been realized with cold atoms. Here we show that by increasing the strength of an experimentally achievable delta-kicking ratchet potential, quantum resonances of a very high order may naturally emerge and can induce larger ratchet currents than low-order resonances, with the underlying classical limit being fully chaotic. The results offer a means of controlling quantum transport of cold atoms.

Anatole Kenfack; Jiangbin Gong; Arjendu K. Pattanayak

2007-11-27T23:59:59.000Z

410

Economics of high performance steam systems (HPSS) cogeneration: A handbook  

SciTech Connect (OSTI)

This guidebook aims to farther industry's knowledge of HPSS and their potential benefits. It is also intended to provide industrial end-users with a basis for judging the merits of HPSS under various site-specific conditions by outlining the economics of HPSS and conventional cogeneration systems compared to boilers under representative sets of industrial process conditions. Electric utility companies have experimented with steam pressures in the range of 5,000 psig and temperatures up to 1,200[degrees]F, but generally have remained with more conservative throttle conditions of 2,400 psig, 1,000[degrees]F to improve reliability. Most industrial applications have used steam throttle conditions below 900 psig and 900[degrees]F. Yet thermodynamic analysis shows that in a steam turbine generator, the amount of electricity generated per pound of steam increases as the inlet steam temperature and pressure are increased. Furthermore, the incremental electricity that is generated by raising the steam temperature and pressure is produced in a highly efficient manner. Efforts in this direction explain why, recently, some industrial projects have been built with steam turbine inlet turbine conditions of 1,500 psig and above. The HPSS concept goes one step further: It is based on a high-temperature steam generator capable of producing 1,500[degrees]F superheated steam and a high-speed steam turbine-generator. By utilizing the HPSS system as a topping'' system, high-pressure steam can be expanded from 1,500[degrees]F to the traditional temperatures used by industry.

Not Available

1992-06-01T23:59:59.000Z

411

Economics of high performance steam systems (HPSS) cogeneration: A handbook  

SciTech Connect (OSTI)

This guidebook aims to farther industry`s knowledge of HPSS and their potential benefits. It is also intended to provide industrial end-users with a basis for judging the merits of HPSS under various site-specific conditions by outlining the economics of HPSS and conventional cogeneration systems compared to boilers under representative sets of industrial process conditions. Electric utility companies have experimented with steam pressures in the range of 5,000 psig and temperatures up to 1,200{degrees}F, but generally have remained with more conservative throttle conditions of 2,400 psig, 1,000{degrees}F to improve reliability. Most industrial applications have used steam throttle conditions below 900 psig and 900{degrees}F. Yet thermodynamic analysis shows that in a steam turbine generator, the amount of electricity generated per pound of steam increases as the inlet steam temperature and pressure are increased. Furthermore, the incremental electricity that is generated by raising the steam temperature and pressure is produced in a highly efficient manner. Efforts in this direction explain why, recently, some industrial projects have been built with steam turbine inlet turbine conditions of 1,500 psig and above. The HPSS concept goes one step further: It is based on a high-temperature steam generator capable of producing 1,500{degrees}F superheated steam and a high-speed steam turbine-generator. By utilizing the HPSS system as a ``topping`` system, high-pressure steam can be expanded from 1,500{degrees}F to the traditional temperatures used by industry.

Not Available

1992-06-01T23:59:59.000Z

412

Performance of ALICE pixel prototypes in high energy beams  

E-Print Network [OSTI]

The two innermost layers of the ALICE inner tracking system are instrumented with silicon pixel detectors. Single chip assembly prototypes of the ALICE pixels have been tested in high energy particle beams at the CERN SPS. Detection efficiency and spatial precision have been studied as a function of the threshold and the track incidence angle. The experimental method, data analysis and main results are presented.

D. Elia

2005-12-20T23:59:59.000Z

413

Machine Learning Techniques for High Performance Engine Calibration  

E-Print Network [OSTI]

in pressure, due to Bernoulli's Principle, would draw fuel from jets, or orifices in the carburetor. The larger the pressure drop, the more fuel would mix with the airstream. While this is a rather simple system, it does not add precisely measured amounts... to accurately model the behavior of complex systems such as internal combustion engines [11]. It claims to utilize “newly developed statistical learning procedures” [11] that lead to a high model accuracy. However, the cost to license this software puts...

Van Horn, Adam Kenton

2014-05-31T23:59:59.000Z

414

Development of Alternative and Durable High Performance Cathode Supporst  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat Pump Models |Conduct, Parent Companya new highModeling Capabilities for

415

Development of Alternative and Durable High Performance Cathode Supports  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat Pump Models |Conduct, Parent Companya new highModeling Capabilities forfor PEM

416

High performance Zintl phase TE materials with embedded nanoparticles |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground Hawaii HIGH PERFORMANCEDOE Biomass Program2

417

Generalized Portable SHMEM Library for High Performance Computing  

SciTech Connect (OSTI)

This dissertation describes the efforts to design and implement the Generalized Portable SHMEM library, GPSHMEM, as well as supplementary tools. There are two major components of the GPSHMEM project: the GPSHMEM library itself and the Fortran 77 source-to-source translator. The rest of this thesis is divided into two parts. Part I introduces the shared memory model and the distributed shared memory model. It explains the motivation behind GPSHMEM and presents its functionality and performance results. Part II is entirely devoted to the Fortran 77 translator call fgpp. The need for such a tool is demonstrated, functionality goals are stated, and the design issues are presented along with the development of the solutions.

Krzysztof Parzyszek

2003-08-05T23:59:59.000Z

418

High performance control of harmonic instability from HVDC link system  

SciTech Connect (OSTI)

This paper investigates the usefulness of novel control method for HVDC link system which suffers from severe condition of low order harmonic. This control scheme is used the feedforward control method which is directly controlled dc current at dc link system. The studies of this paper are aimed to improving the dynamic response of HVdc link system in disturbances such as faults. To achieve those objectives, digital time domain simulations are employed by the electro magnetic transient program for dc system (EMTDC). This method results in stable recovery from faults at both rectifier and inverter terminal busbars for a HVdc system that is inherently unstable. It has been found to be robust and control performance has been enhanced.

Min, W.K.; Yoo, M.H. [Korea Electric Power Research Inst., Taejeon (Korea, Republic of)

1995-12-31T23:59:59.000Z

419

Building America Webinar: High Performance Enclosure Strategies: Part II, New Construction  

Broader source: Energy.gov [DOE]

The webinar is the second in the series on designing and constructing high performance building enclosures, and will focus on effective strategies to address moisture and thermal needs.

420

High Performance Computational Biology: A Distributed computing Perspective (2010 JGI/ANL HPC Workshop)  

ScienceCinema (OSTI)

David Konerding from Google, Inc. gives a presentation on "High Performance Computational Biology: A Distributed Computing Perspective" at the JGI/Argonne HPC Workshop on January 26, 2010.

Konerding, David [Google, Inc

2011-06-08T23:59:59.000Z

Note: This page contains sample records for the topic "high performance cold" 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

E-Print Network 3.0 - alternative high-performance material-based...  

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

; Biotechnology 3 February 13, 2008 Virtualized Environments for the Harness High Performance Computing Workbench 117 Virtualized Environments for the Harness Summary: February...

422

E-Print Network 3.0 - anion exchange high-performance Sample...  

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

Sawicka,, Piotr Skurski,*,, and Jack Simons Summary: by the Center for High Performance Computing at the University of Utah and the Academic Computer Center in Gdan... found...

423

High Performance Computing at TJNAF| U.S. DOE Office of Science...  

Office of Science (SC) Website

More Information Applications of Nuclear Science Archives High Performance Computing at TJNAF Print Text Size: A A A FeedbackShare Page Application...

424

Funding Opportunity Webinar – Building America Industry Partnerships for High Performance Housing Innovations  

Broader source: Energy.gov [DOE]

This webinar provides an overview of the “Building America Industry Partnerships for High Performance Housing Innovations” Funding Opportunity Announcement, DE-FOA-0001117.

425

Funding Opportunity Webinar – Building America Industry Partnerships for High Performance Housing Innovations (Text Version)  

Broader source: Energy.gov [DOE]

Below is the text version of the Funding Opportunity Webinar, Building America Industry Partnerships for High Performance Housing Innovations, presented in November 2014.

426

Smith-Waterman Sequence Alignment For Massively Parallel High-Performance Computing Architectures.  

E-Print Network [OSTI]

?? This research addresses one of the most often used tools in bioinformatics, sequence alignment. The increasing growth and complexity of high-performance computing as well… (more)

Steinfadt, Shannon Irene

2010-01-01T23:59:59.000Z

427

Time Division Multiplexing of Network Access by Security Groups in High Performance Computing Environments.  

E-Print Network [OSTI]

??It is commonly known that High Performance Computing (HPC) systems are most frequently used by multiple users for batch job, parallel computations. Less well known,… (more)

Ferguson, Joshua

2013-01-01T23:59:59.000Z

428

High Performance Computing Based Methods for Simulation and Optimisation of Flow Problems.  

E-Print Network [OSTI]

??The thesis is concerned with the study of methods in high-performance computing for simulation and optimisation of flow problems that occur in the framework of… (more)

Bockelmann, Hendryk

2010-01-01T23:59:59.000Z

429

Measuring and tuning energy efficiency on large scale high performance computing platforms.  

E-Print Network [OSTI]

??Recognition of the importance of power in the field of High Performance Computing, whether it be as an obstacle, expense or design consideration, has never… (more)

Laros, James Howard III

2012-01-01T23:59:59.000Z

430

Theory and practice of dynamic voltage/frequency scaling in the high performance computing environment.  

E-Print Network [OSTI]

?? This dissertation provides a comprehensive overview of the theory and practice of Dynamic Voltage/Frequency Scaling (DVFS) in the High Performance Computing (HPC) environment. We… (more)

Rountree, Barry Louis

2010-01-01T23:59:59.000Z

431

Model-driven Memory Optimizations for High Performance Computing: From Caches to I/o.  

E-Print Network [OSTI]

??High performance systems are quickly evolving to keep pace with application demands, and we observe greater complexity in system design at all scales. Parallelism, in… (more)

Frasca, Michael

2012-01-01T23:59:59.000Z

432

Alternative High-Performance Motors with Non-Rare Earth Materials...  

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

Alternative High-Performance Motors with Non-Rare Earth Materials 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer...

433

Scalable, Low-Cost, High Performance IPM Motor for Hybrid Vehicles...  

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

Scalable, Low-Cost, High Performance IPM Motor for Hybrid Vehicles 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer...

434

High performance static latches with complete single event upset immunity  

DOE Patents [OSTI]

An asymmetric response latch providing immunity to single event upset without loss of speed. The latch has cross-coupled inverters having a hardened logic state and a soft state, wherein the logic state of the first inverter can only be changed when the voltage on the coupling node of that inverter is low and the logic state of the second inverter can only be changed when the coupling of that inverter is high. One of more of the asymmetric response latches may be configured into a memory cell having complete immunity, which protects information rather than logic states.

Corbett, Wayne T. (Albuquerque, NM); Weaver, Harry T. (Albuquerque, NM)

1994-01-01T23:59:59.000Z

435

Process of making cryogenically cooled high thermal performance crystal optics  

DOE Patents [OSTI]

A method is disclosed for constructing a cooled optic wherein one or more cavities are milled, drilled or formed using casting or ultrasound laser machining techniques in a single crystal base and filled with porous material having high thermal conductivity at cryogenic temperatures. A non-machined strain-free single crystal can be bonded to the base to produce superior optics. During operation of the cooled optic, N[sub 2] is pumped through the porous material at a sub-cooled cryogenic inlet temperature and with sufficient system pressure to prevent the fluid bulk temperature from reaching saturation. 7 figs.

Kuzay, T.M.

1992-06-23T23:59:59.000Z

436

High performance static latches with complete single event upset immunity  

DOE Patents [OSTI]

An asymmetric response latch providing immunity to single event upset without loss of speed is described. The latch has cross-coupled inverters having a hardened logic state and a soft state, wherein the logic state of the first inverter can only be changed when the voltage on the coupling node of that inverter is low and the logic state of the second inverter can only be changed when the coupling of that inverter is high. One of more of the asymmetric response latches may be configured into a memory cell having complete immunity, which protects information rather than logic states. 5 figures.

Corbett, W.T.; Weaver, H.T.

1994-04-26T23:59:59.000Z

437

Process of making cryogenically cooled high thermal performance crystal optics  

DOE Patents [OSTI]

A method for constructing a cooled optic wherein one or more cavities are milled, drilled or formed using casting or ultrasound laser machining techniques in a single crystal base and filled with porous material having high thermal conductivity at cryogenic temperatures. A non-machined strain-free single crystal can be bonded to the base to produce superior optics. During operation of the cooled optic, N.sub.2 is pumped through the porous material at a sub-cooled cryogenic inlet temperature and with sufficient system pressure to prevent the fluid bulk temperature from reaching saturation.

Kuzay, Tuncer M. (Naperville, IL)

1992-01-01T23:59:59.000Z

438

High Performance Sustainable Building Design RM | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.ProgramJulietip sheetK-4In 2013 many| Department of4EnergyBuildingThe High

439

High Performance Computing at the Oak Ridge Leadership Computing Facility  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in the Madison SymmetricHigh Carbon|1-3, mthe Role

440

High Performance OLEDs with Air-stable Nanostructured Electrodes - Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in the Madison SymmetricHigh Carbon|1-3,

Note: This page contains sample records for the topic "high performance cold" 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

High Performance Sustainable Building - DOE Directives, Delegations, and  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in the Madison SymmetricHigh Carbon|1-3,Lithium

442

High Power Performance Lithium Ion Battery - Energy Innovation Portal  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in the Madison SymmetricHighPerformancng DavidEnergy

443

Natural Refrigerant High-Performance Heat Pump for Commercial Applications  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office0-72.pdfGeorgeDoesn't32Department U.S.NationalNatural GasHighEnergy1-93 July

444

High-Performance, Superparamagnetic, Nanoparticle-Based Heavy Metal  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in thein the AssemblyHigh-Order MembraneSiteSorbents

445

Money for Research, Not for Energy Bills: Finding Energy and Cost Savings in High Performance Computer Facility Designs  

E-Print Network [OSTI]

Journal of High Performance Computing Applications 22 (2).is both a model of high-performance computing and a showcaseAbstract High-performance computing facilities in the United

Sartor, Dale

2011-01-01T23:59:59.000Z

446

High-performance parallel interface to synchronous optical network gateway  

DOE Patents [OSTI]

Disclosed is a system of sending and receiving gateways interconnects high speed data interfaces, e.g., HIPPI interfaces, through fiber optic links, e.g., a SONET network. An electronic stripe distributor distributes bytes of data from a first interface at the sending gateway onto parallel fiber optics of the fiber optic link to form transmitted data. An electronic stripe collector receives the transmitted data on the parallel fiber optics and reforms the data into a format effective for input to a second interface at the receiving gateway. Preferably, an error correcting syndrome is constructed at the sending gateway and sent with a data frame so that transmission errors can be detected and corrected in a real-time basis. Since the high speed data interface operates faster than any of the fiber optic links the transmission rate must be adapted to match the available number of fiber optic links so the sending and receiving gateways monitor the availability of fiber links and adjust the data throughput accordingly. In another aspect, the receiving gateway must have sufficient available buffer capacity to accept an incoming data frame. A credit-based flow control system provides for continuously updating the sending gateway on the available buffer capacity at the receiving gateway. 7 figs.

St. John, W.B.; DuBois, D.H.

1996-12-03T23:59:59.000Z

447

MATERIALS INTEGRATION FOR HIGH- PERFORMANCE PHOTOVOLTAICS BY WAFER BONDING  

E-Print Network [OSTI]

No thesis is an individual endeavor, and this thesis would not have been possible without the assistance of my collaborators and advisor and would have been unendurable without the support of my coworkers, friends, and family. I apologize in advance to anyone whom I might omit in this brief acknowledgement, but it is late and I am running out of time! In the summer of 2000, Harry Atwater agreed to allow me to transfer to his group from the chemical engineering department. I was discouraged and doubtful about my future at Caltech and in graduate school in general. Since giving me that chance he has been a great advisor with no shortage of encouragement or ideas. I am never sure if this is by design, but Harry has managed to inspire me to work hard and has given me countless ideas to pursue while always allowing me to feel that I have nearly complete freedom to pursue experiments that are interesting to me. While in Harry’s group I had the good fortune to work closely with two post-doctoral scholars, Chang-Geun Ahn and Anna Fontcuberta i Morral. Chang-Geun was extremely helpful in getting the Ge/Si bonding project going and in optical and electrical characterization experiments. Anna was tough to work with because her energy level is so darned high, but she has also been very supportive and her high energy approach to research has pushed me to work

James Michael Zahler; James Michael Zahler

2005-01-01T23:59:59.000Z

448

High-performance parallel interface to synchronous optical network gateway  

DOE Patents [OSTI]

A system of sending and receiving gateways interconnects high speed data interfaces, e.g., HIPPI interfaces, through fiber optic links, e.g., a SONET network. An electronic stripe distributor distributes bytes of data from a first interface at the sending gateway onto parallel fiber optics of the fiber optic link to form transmitted data. An electronic stripe collector receives the transmitted data on the parallel fiber optics and reforms the data into a format effective for input to a second interface at the receiving gateway. Preferably, an error correcting syndrome is constructed at the sending gateway and sent with a data frame so that transmission errors can be detected and corrected in a real-time basis. Since the high speed data interface operates faster than any of the fiber optic links the transmission rate must be adapted to match the available number of fiber optic links so the sending and receiving gateways monitor the availability of fiber links and adjust the data throughput accordingly. In another aspect, the receiving gateway must have sufficient available buffer capacity to accept an incoming data frame. A credit-based flow control system provides for continuously updating the sending gateway on the available buffer capacity at the receiving gateway.

St. John, Wallace B. (Los Alamos, NM); DuBois, David H. (Los Alamos, NM)

1996-01-01T23:59:59.000Z

449

High performance tunnel injection quantum dot comb laser  

SciTech Connect (OSTI)

A high-speed multiwavelength quantum dot comb laser, grown by molecular beam epitaxy, is demonstrated. The device is characterized with a 75.9 nm (full width at half maximum) and a 91.4 nm (DELTA{sub -15dB}) wide lasing spectrum. There are 105 and 185 simultaneously emitted longitudinal modes with a maximum channel intensity nonuniformity of less than 3 dB in the spectral range of 1231-1252 nm and 1274-1311 nm, respectively, for a laser with 1040 mum cavity length. The channel spacing can be tuned with cavity length and remains invariant in the temperature range of 300-323 K. The small signal modulation bandwidth is 7.5 GHz.

Lee, C.-S.; Guo Wei; Basu, Debashish; Bhattacharya, Pallab [Department of Electrical Engineering and Computer Science, Solid State Electronics Laboratory, University of Michigan, Ann Arbor, Michigan 48109-2122 (United States)

2010-03-08T23:59:59.000Z

450

Performance of a high efficiency advanced coal combustor  

SciTech Connect (OSTI)

Under contract from DOE-PETC, Combustion Engineering, Inc. undertook the lead-role in a multi-task R D program aimed at development of a new burner system for coal-based fuels; the goal was that this burner system should be capable of being retrofitted in oil- or gas-fired industrial boilers, or usable in new units. In the first phase of this program a high efficiency advanced coal combustor was designed jointly by CE and MIT. Its burner is of the multiannular design with a fixed shrouded swirler in the center immediately surrounding the atomizer gun to provide the primary act,'' and three further annuli for the supply of the secondary air.'' The degree of rotation (swirl) in the secondary air is variable. The split of the combustion air into primary and secondary air flows serves the purpose of flame stabilization and combustion staging, the latter to reduce NO{sub x} formation.

Toqan, M.A.; Paloposki, T.; Yu, T.; Teare, J.D.; Beer, J.M. (Massachusetts Inst. of Tech., Cambridge, MA (United States))

1989-12-01T23:59:59.000Z

451

High performance x-ray anti-scatter grid  

DOE Patents [OSTI]

Disclosed are an x-ray anti-scatter grid for x-ray imaging, particularly for screening mammography, and method for fabricating same, x-rays incident along a direct path pass through a grid composed of a plurality of parallel or crossed openings, microchannels, grooves, or slots etched in a substrate, such as silicon, having the walls of the microchannels or slots coated with a high opacity material, such as gold, while x-rays incident at angels with respect to the slots of the grid, arising from scatter, are blocked. The thickness of the substrate is dependent on the specific application of the grid, whereby a substrate of the grid for mammography would be thinner than one for chest radiology. Instead of coating the walls of the slots, such could be filed with an appropriate liquid, such as mercury. 4 Figs.

Logan, C.M.

1995-05-23T23:59:59.000Z

452

High performance x-ray anti-scatter grid  

DOE Patents [OSTI]

An x-ray anti-scatter grid for x-ray imaging, particularly for screening mammography, and method for fabricating same, x-rays incident along a direct path pass through a grid composed of a plurality of parallel or crossed openings, microchannels, grooves, or slots etched in a substrate, such as silicon, having the walls of the microchannels or slots coated with a high opacity material, such as gold, while x-rays incident at angels with respect to the slots of the grid, arising from scatter, are blocked. The thickness of the substrate is dependent on the specific application of the grid, whereby a substrate of the grid for mammography would be thinner than one for chest radiology. Instead of coating the walls of the slots, such could be filed with an appropriate liquid, such as mercury.

Logan, Clinton M. (Pleasanton, CA)

1995-01-01T23:59:59.000Z

453

Assessment of cold-climate environmental research priorities  

SciTech Connect (OSTI)

The Environmental Protection Agency (EPA) has consistently recognized that cold regions pose unique environmental problems. This report sets forth the conceptual framework and research plans for several high priority research areas. It provides the fundamental basis for implementation of the EPA Cold-Climate Environmental Research Program. This three- to five-year program encompasses both short- and long-term research of high relevance to the EPA and to the cold regions that it serves.

States, J.B.

1983-04-01T23:59:59.000Z

454

Tech-X Corporation has accessed the high performance computing (HPC) facilities at the Science and Technology Facilities Council's (STFC)  

E-Print Network [OSTI]

Tech-X Corporation has accessed the high performance computing (HPC) facilities at the Science high performance computing (HPC) and simulation technology. A research collaboratory in association

Zharkova, Valentina V.

455

A Comparative Study of Stochastic Unit Commitment and Security-Constrained Unit Commitment Using High Performance Computing  

E-Print Network [OSTI]

High Performance Computing Anthony Papavasiliou and Shmuel S. Oren Abstract-- The large decomposition. The proposed algorithms are implemented in a high performance computing environment

Oren, Shmuel S.

456

COLD STORAGE DESIGN REFRIGERATION EQUIPMENT  

E-Print Network [OSTI]

COLD STORAGE DESIGN AND REFRIGERATION EQUIPMENT REFRIGERATION OF FISH - PART 1 \\ "..\\- ,,, T I (Section 1), and F. Bruce Sanford (Section 1) Table of Contents Pages Section 1 - Cold Storage Design to be Considered in the Freezing and Cold Storage of Fishery Products - Preparing, Freezing, and Cold Storage

457

High Performance, Low Cost Hydrogen Generation from Renewable Energy  

SciTech Connect (OSTI)

Renewable hydrogen from proton exchange membrane (PEM) electrolysis is gaining strong interest in Europe, especially in Germany where wind penetration is already at critical levels for grid stability. For this application as well as biogas conversion and vehicle fueling, megawatt (MW) scale electrolysis is required. Proton has established a technology roadmap to achieve the necessary cost reductions and manufacturing scale up to maintain U.S. competitiveness in these markets. This project represents a highly successful example of the potential for cost reduction in PEM electrolysis, and provides the initial stack design and manufacturing development for Proton’s MW scale product launch. The majority of the program focused on the bipolar assembly, from electrochemical modeling to subscale stack development through prototyping and manufacturing qualification for a large active area cell platform. Feasibility for an advanced membrane electrode assembly (MEA) with 50% reduction in catalyst loading was also demonstrated. Based on the progress in this program and other parallel efforts, H2A analysis shows the status of PEM electrolysis technology dropping below $3.50/kg production costs, exceeding the 2015 target.

Ayers, Katherine [Proton OnSite] [Proton OnSite; Dalton, Luke [Proton OnSite] [Proton OnSite; Roemer, Andy [Proton OnSite] [Proton OnSite; Carter, Blake [Proton OnSite] [Proton OnSite; Niedzwiecki, Mike [Proton OnSite] [Proton OnSite; Manco, Judith [Proton OnSite] [Proton OnSite; Anderson, Everett [Proton OnSite] [Proton OnSite; Capuano, Chris [Proton OnSite] [Proton OnSite; Wang, Chao-Yang [Penn State University] [Penn State University; Zhao, Wei [Penn State University] [Penn State University

2014-02-05T23:59:59.000Z

458

Method for improving performance of highly stressed electrical insulating structures  

DOE Patents [OSTI]

Removing the electrical field from the internal volume of high-voltage structures; e.g., bushings, connectors, capacitors, and cables. The electrical field is removed from inherently weak regions of the interconnect, such as between the center conductor and the solid dielectric, and places it in the primary insulation. This is accomplished by providing a conductive surface on the inside surface of the principal solid dielectric insulator surrounding the center conductor and connects the center conductor to this conductive surface. The advantage of removing the electric fields from the weaker dielectric region to a stronger area improves reliability, increases component life and operating levels, reduces noise and losses, and allows for a smaller compact design. This electric field control approach is currently possible on many existing products at a modest cost. Several techniques are available to provide the level of electric field control needed. Choosing the optimum technique depends on material, size, and surface accessibility. The simplest deposition method uses a standard electroless plating technique, but other metalization techniques include vapor and energetic deposition, plasma spraying, conductive painting, and other controlled coating methods.

Wilson, Michael J. (Modesto, CA); Goerz, David A. (Brentwood, CA)

2002-01-01T23:59:59.000Z

459

Bio-Engineering High Performance Microbial Strains for MEOR  

SciTech Connect (OSTI)

The main objectives of this three-year research project are: (1) to employ the latest advances in genetics and bioengineering, especially Directed Protein Evolution technology, to improve the effectiveness of the microbial enhanced oil recovery (MEOR) process. (2) to improve the surfactant activity and the thermal stability of bio-surfactant systems for MEOR; and (3) to develop improved laboratory methods and tools that screen quickly candidate bio-systems for EOR. Biosurfactants have been receiving increasing attention as Enhanced Oil Recovery (EOR) agents because of their unique properties (i.e., mild production conditions, lower toxicity, and higher biodegradability) compared to their synthetic chemical counterparts. Rhamnolipid as a potent natural biosurfactant has a wide range of potential applications, including EOR and bioremediation. During the three-year of the project period, we have successfully cloned the genes involved in the rhamnolipid bio-synthesis. And by using the Transposon containing Rhamnosyltransferase gene rhlAB, we engineered the new mutant strains P. aeruginosa PEER02 and E. coli TnERAB so they can produce rhamnolipid biosurfactans. We were able to produce rhamnolipds in both P. aeroginosa PAO1-RhlA- strain and P. fluorescens ATCC15453 strain, with the increase of 55 to 175 fold in rhamnolipid production comparing with wild type bacteria strain. We have also completed the first round direct evolution studies using Error-prone PCR technique and have constructed the library of RhlAB-containing Transposon to express mutant gene in heterologous hosts. Several methods, such as colorimetric agar plate assay, colorimetric spectrophotometer assay, bioactive assay and oil spreading assay have been established to detect and screen rhamnolipid production. Our engineered P. aeruginosa PEER02 strain can produce rhamnolipids with different carbon sources as substrate. Interfacial tension analysis (IFT) showed that different rhamnolipids from different substrates gave different performance. Those rhamnolipids with plant oil as substrate showed as low an IFT as 0.05mN/m in the buffer solution with pH5.0 and 2% NaCl. Core flooding tests showed that rhamnolipids produced by our engineered bacteria are effective agents for EOR. At 250ppm rhamnolipid concentration from P. aeruginosa PEER02, 42% of the remaining oil after waterflood was recovered. These results were therefore significant towards considering the exploration of the studied rhamnolipids as EOR agents.

Xiangdong Fang; Qinghong Wang; Patrick Shuler

2007-12-30T23:59:59.000Z

460

Synthesis of new high performance lubricants and solid lubricants  

SciTech Connect (OSTI)

In our second year of funding we began the testing phase of a number of new classes of lubricants. Three different testing collaborations have already begun and a fourth one is In the works with Dr. Stephen Hsu of the National Institute of Standards and Technology. Dr. Hsu also plans to test some of the same materials for us that Shell Development is studying. With Dr. Bill Jones of NASA, we are studying the effects of branching an high temperature lubricant properties in perfluoropolyethers, Initially Bill Jones is comparing the lubrication and physical properties of perfluorotetraglyme and the following two spherical perfluoropolyethers, Note that one contains a fluorocarbon chain and the other one contains a fluorocarbon ether chain. The synthesis of these was reported in the last progress report. With Professor Patricia Thiel of Iowa State University, we are working on studies of perfluoromethylene oxide ethers and have prepared a series of four of these polyethers to study in collaboration with her research group. These perfluoromethylene oxide ethers have the best low temperature properties of any known lubricants. Thiel's group is studying their interactions with metals under extreme conditions. Thirdly, we have also begun an Interaction with W. August Birke of Shell Development Company in Houston for whom we have already prepared samples of the chlorine-substituted fluorocarbon polyether lubricants whose structures appear on page 54 of our research proposal. Each of these four structures is thought to have potential as lubricant additives to motor oils. We also have underway syntheses of other fluorine-containing branched ether lubricants. These new materials which are also promising as antifriction additives for motor oils appear ahead of the perfluoro additives as Appendix I to the progress report. Additionally for Birke and Shell Development we have at their request prepared the novel compound perfluoro salicylic acid. This synthesis was suggested by the Shell staff who thought that esters of perfluoro salicylic acid might be an excellent antifriction additive for motor oil fuels. One of the best additives currently used in motor oils is the hydrocarbon ester of salicylic acid.

Lagow, Richard J.

1993-04-08T23:59:59.000Z

Note: This page contains sample records for the topic "high performance cold" 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

Facile synthesis of Li2Spolypyrrole composite structures for high-performance Li2S cathodes  

E-Print Network [OSTI]

Facile synthesis of Li2S­polypyrrole composite structures for high-performance Li2S cathodes Zhi demon- strate facile, in situ synthesis of Li2S­polypyrrole composites for use as high-performance Li2S polysulfides during cycling. Poly- pyrrole, being a conducting polymer, also helps to facilitate elec- tronic

Cui, Yi

462

Optimizing Matrix Multiply using PHiPAC: a Portable, HighPerformance, ANSI C Coding Methodology  

E-Print Network [OSTI]

Optimizing Matrix Multiply using PHiPAC: a Portable, High­Performance, ANSI C Coding Methodology Je Portable, High­Performance, ANSI C #PHiPAC, pro­ nounced #fee­pack''#. Second, rather than code by hand, we

Bilmes, Jeff

463

OpenMSI: A High-Performance Web-Based Platform for Mass Spectrometry Imaging  

E-Print Network [OSTI]

OpenMSI: A High-Performance Web-Based Platform for Mass Spectrometry Imaging Oliver RĂĽbel, AnnetteMSI: A High-Performance Web-Based Platform for Mass Spectrometry Imaging Oliver Rubel,* Annette Greiner. Acknowledgements: This work was supported by and used resources of the National Energy Research Scientific

464

Characterization of At-species in simple and biological media by high performance  

E-Print Network [OSTI]

Characterization of At- species in simple and biological media by high performance anion exchange detection system, may be an alternative way to study its chemistry. In this research work, High Performance indicates the existence of negative ion, astatide At- . The methodology was successfully applied

Boyer, Edmond

465

Graphenesponges as high-performance low-cost anodes for microbial fuel Xing Xie,ab  

E-Print Network [OSTI]

Graphene­sponges as high-performance low-cost anodes for microbial fuel cells Xing Xie,ab Guihua Yu February 2012 DOI: 10.1039/c2ee03583a A high-performance microbial fuel cell (MFC) anode was con- structed. Microbial fuel cells (MFCs) harness the metabolism of exoelec- trogens, microorganisms that mediate

Cui, Yi

466

Durability Assessment of an Arch Dam using Inverse Analysis with Neural Networks and High Performance Computing.  

E-Print Network [OSTI]

the viscoelastic parameters; 3D FEM analysis using High Performance Computing (parallel and vector features) to run Performance Computing. E. M. R. Fairbairn, E. Goulart, A. L. G. A. Coutinho, N. F. F. Ebecken COPPEDurability Assessment of an Arch Dam using Inverse Analysis with Neural Networks and High

Coutinho, Alvaro L. G. A.

467

Physical Design for Reduced Delay Uncertainty in High Performance Clock Distribution Networks  

E-Print Network [OSTI]

531 Physical Design for Reduced Delay Uncertainty in High Performance Clock Distribution Networks, the design of a clock distribution network represents one of the most challenging tasks in the integrated in the design of a high performance clock distribution network [1]. The uncertainty of the clock signal delay

Friedman, Eby G.

468

PowerPack: Energy Profiling and Analysis of High-Performance Systems and Applications  

E-Print Network [OSTI]

-based nodes, and then provide in-depth analyses of the energy consumption of parallel applications on clusters and energy are primary concerns in modern high- performance computing system design. Operational costs power and energy consumption in high-performance systems, including each component's electrical

469

The Preliminary Design of Papyrus: A System for High Performance, Distributed Data Mining  

E-Print Network [OSTI]

The Preliminary Design of Papyrus: A System for High Performance, Distributed Data Mining over. Ramu, B. Malhi and A. Turinsky, The Preliminary Design of Papyrus: A Sys- tem for High Performance the storage and data management services for the data sets being mined. Compute-clusters provide the compute

Grossman, Robert

470

ENERGY-EFFICIENT RESOURCE MANAGEMENT FOR HIGH-PERFORMANCE COMPUTING PLATFORMS  

E-Print Network [OSTI]

ENERGY-EFFICIENT RESOURCE MANAGEMENT FOR HIGH-PERFORMANCE COMPUTING PLATFORMS Except where School Engineering #12;ENERGY-EFFICIENT RESOURCE MANAGEMENT FOR HIGH-PERFORMANCE COMPUTING PLATFORMS of the Requirements for the Degree of Doctor of Philosophy Auburn, Alabama August 9, 2008 #12;iii ENERGY-EFFICIENT

Qin, Xiao

471

An advanced thermionic theory for development of high performance thermionic energy conversion diodes  

SciTech Connect (OSTI)

Methods for improving the performance of thermionic energy conversion diodes have been studied and successfully applied. However, puzzling anomalies and inaccurate predictions have impeded the development of high performance thermionic energy converters. An inconsistency was recently found in the conventional approach for predicting net thermionic currents in energy conversion diodes; the observed inconsistency may be a primary source of predictive inaccuracies. The conventional method for predicting net currents in vacuum energy conversion diodes can be expressed by J = J{sub E} {minus} J{sub C} . Here J is the net currently density, and J{sub E} and J{sub C} are the emitter and collector emission current densities, respectively. The parameters J{sub E} and J{sub C} are obtained using the basic form of the Richardson-Dushman equation. This review found that the conventional method can conflict with the second law of thermodynamics for some operational conditions. The conflict was traced to an inconsistency in the treatment of electron reflection at the electrode surface. Quantum symmetry rules require that surfaces reflecting internal electrons (from within the electrode) must also reflect external electrons (from the opposite electrode). However, the standard method accounts only for internal electron reflection. The error caused by this inconsistency can be important because significant electron reflection has been reported for electrode materials in the energy range important for thermionic energy conversion. A simple derivation has yielded a revised formulation that properly accounts for electron reflection. The revised equation is given by, J = {tau}(J{sub E} {minus} {Gamma}J{sub C}). Several alternative formulations have been developed to compute the values of {tau} and {Gamma}. The parameters {tau} and {Gamma} can be computed using average reflection (or transmission) parameters for both electrodes, or the parameters can be computed using the energy and angle dependent scattering kernels for both electrodes. Operating temperatures and voltages are also used in the computation of {tau} and {Gamma}. The revised formulations show that even a cold collector can significantly impact net current, and when reflection is absent for both electrodes, the revised equation reduces to the original equation. Predictions using the revised equation were compared to predictions using the conventional approach and to predictions using an alternative (incorrect) method. For the alternative method, all reflection effects are included as an adjustment to the work function. The results of this comparison suggest that large errors are possible when the revised equations are not used. Discrepancies due to improper treatment of reflection are most likely to be observed when reflection effects are large and comparisons with measurements are made for conditions basically different from those used to fit equation parameters. In conclusion, conventional methods for predicting net thermionic current densities do not correctly account for electron reflection. The improper treatment of reflection may cause significant predictive errors. A revised formulation has been developed for vacuum energy conversion diodes to properly account for electron reflection. Future plans include validation experiments, an extension of the theory to include other types of diodes, and investigations of reflection mechanisms.

Marshall, A.C.

1998-07-01T23:59:59.000Z

472

Toward a Performance/Resilience Tool for Hardware/Software Co-Design of High-Performance Computing Systems  

SciTech Connect (OSTI)

xSim is a simulation-based performance investigation toolkit that permits running high-performance computing (HPC) applications in a controlled environment with millions of concurrent execution threads, while observing application performance in a simulated extreme-scale system for hardware/software co-design. The presented work details newly developed features for xSim that permit the injection of MPI process failures, the propagation/detection/notification of such failures within the simulation, and their handling using application-level checkpoint/restart. These new capabilities enable the observation of application behavior and performance under failure within a simulated future-generation HPC system using the most common fault handling technique.

Engelmann, Christian [ORNL] [ORNL; Naughton, III, Thomas J [ORNL

2013-01-01T23:59:59.000Z

473

Design and first cold test of BNL superconducting 112 MHz QWR for electron gun applications  

SciTech Connect (OSTI)

Brookhaven National Laboratory and Niowave, Inc. have designed, fabricated, and performed the first cold test of a superconducting 112 MHz quarter-wave resonator (QWR) for electron gun experiments. The first cold test of the QWR cryomodule has been completed at Niowave. The paper discusses the cryomodule design, presents the cold test results, and outline plans to upgrade the cryomodule for future experiments. A quarter-wave resonator concept of superconducting RF (SRF) electron gun was proposed at BNL for electron cooling ion/proton beams at RHIC. QWRs can be made sufficiently compact even at low RF frequencies (long wavelengths). The long wavelength allows to produce long electron bunches, thus minimizing space charge effects and enabling high bunch charge. Also, such guns should be suitable for experiments requiring high average current electron beams. A 112 MHz QWR gun was designed, fabricated, and cold-tested in collaboration between BNL and Niowave. This is the lowest frequency SRF gun ever tested successfully. In this paper we describe the gun design and fabrication, present the cold test results, and outline plans for the cryomodule upgrade for future experiments.

Belomestnykh, S.; Ben-Zvi, I.; Boulware, C.H.; Chang, X.; Grimm, T.L.; Siegel, B.; Than, R.; Winowski, M.

2011-03-28T23:59:59.000Z

474

Technical Exchange on Improved Design and Performance of High Level Waste Melters - Final Report  

SciTech Connect (OSTI)

SIA Radon is responsible for management of low- and intermediate-level radioactive waste (LILW) produced in Central Russia. In cooperation with Minatom organizations Radon carries out R and D programs on treatment of simulated high level waste (HLW) as well. Radon scientists deal with a study of materials for LILW, HLW, and Nuclear Power Plants (NPP) wastes immobilization, and development and testing of processes and technologies for waste treatment and disposal. Radon is mostly experienced in LILW vitrification. This experience can be carried over to HLW vitrification especially in field of melting systems. The melter chosen as a basic unit for the vitrification plant is a cold crucible. Later on Radon experience in LILW vitrification as well as our results on simulated HLW vitrification are briefly described.

SK Sundaram; ML Elliott; D Bickford

1999-11-19T23:59:59.000Z

475

Energy-Performance-Based Design-Build Process: Strategies for Procuring High-Performance Buildings on Typical Construction Budgets: Preprint  

SciTech Connect (OSTI)

NREL experienced a significant increase in employees and facilities on our 327-acre main campus in Golden, Colorado over the past five years. To support this growth, researchers developed and demonstrated a new building acquisition method that successfully integrates energy efficiency requirements into the design-build requests for proposals and contracts. We piloted this energy performance based design-build process with our first new construction project in 2008. We have since replicated and evolved the process for large office buildings, a smart grid research laboratory, a supercomputer, a parking structure, and a cafeteria. Each project incorporated aggressive efficiency strategies using contractual energy use requirements in the design-build contracts, all on typical construction budgets. We have found that when energy efficiency is a core project requirement as defined at the beginning of a project, innovative design-build teams can integrate the most cost effective and high performance efficiency strategies on typical construction budgets. When the design-build contract includes measurable energy requirements and is set up to incentivize design-build teams to focus on achieving high performance in actual operations, owners can now expect their facilities to perform. As NREL completed the new construction in 2013, we have documented our best practices in training materials and a how-to guide so that other owners and owner's representatives can replicate our successes and learn from our experiences in attaining market viable, world-class energy performance in the built environment.

Scheib, J.; Pless, S.; Torcellini, P.

2014-08-01T23:59:59.000Z

476

Cold Climates Heat Pump Design Optimization  

SciTech Connect (OSTI)

Heat pumps provide an efficient heating method; however they suffer from sever capacity and performance degradation at low ambient conditions. This has deterred market penetration in cold climates. There is a continuing effort to find an efficient air source cold climate heat pump that maintains acceptable capacity and performance at low ambient conditions. Systematic optimization techniques provide a reliable approach for the design of such systems. This paper presents a step-by-step approach for the design optimization of cold climate heat pumps. We first start by describing the optimization problem: objective function, constraints, and design space. Then we illustrate how to perform this design optimization using an open source publically available optimization toolbox. The response of the heat pump design was evaluated using a validated component based vapor compression model. This model was treated as a black box model within the optimization framework. Optimum designs for different system configurations are presented. These optimum results were further analyzed to understand the performance tradeoff and selection criteria. The paper ends with a discussion on the use of systematic optimization for the cold climate heat pump design.

Abdelaziz, Omar [ORNL] [ORNL; Shen, Bo [ORNL] [ORNL

2012-01-01T23:59:59.000Z

477

IEA HPP Annex 41 Cold Climate Heat  

E-Print Network [OSTI]

of Air-Source Heat Pumps Van D. Baxter Oak Ridge National Laboratory European Heat Pump Summit Nuremberg ­ Cold Climate Heat Pumps Improving low ambient temperature performance of air-source heat pumps as having large number of hours with OD temperature -7 °C (19 °F). Air-source heat pumps (ASHP

Oak Ridge National Laboratory

478

Practices and Processes of Leading High Performance Home Builders in the Upper Midwest  

SciTech Connect (OSTI)

The NorthernSTAR Building America Partnership team proposed this study to gain insight into the business, sales, and construction processes of successful high performance builders. The knowledge gained by understanding the high performance strategies used by individual builders, as well as the process each followed to move from traditional builder to high performance builder, will be beneficial in proposing more in-depth research to yield specific action items to assist the industry at large transform to high performance new home construction. This investigation identified the best practices of three successful high performance builders in the upper Midwest. In-depth field analysis of the performance levels of their homes, their business models, and their strategies for market acceptance were explored. All three builders commonly seek ENERGY STAR certification on their homes and implement strategies that would allow them to meet the requirements for the Building America Builders Challenge program. Their desire for continuous improvement, willingness to seek outside assistance, and ambition to be leaders in their field are common themes. Problem solving to overcome challenges was accepted as part of doing business. It was concluded that crossing the gap from code-based building to high performance based building was a natural evolution for these leading builders.

Von Thoma, E.; Ojczyk, C.

2012-12-01T23:59:59.000Z

479

Absolute atomic oxygen and nitrogen densities in radio-frequency driven atmospheric pressure cold plasmas: Synchrotron vacuum ultra-violet high-resolution Fourier-transform absorption measurements  

SciTech Connect (OSTI)

Reactive atomic species play a key role in emerging cold atmospheric pressure plasma applications, in particular, in plasma medicine. Absolute densities of atomic oxygen and atomic nitrogen were measured in a radio-frequency driven non-equilibrium plasma operated at atmospheric pressure using vacuum ultra-violet (VUV) absorption spectroscopy. The experiment was conducted on the DESIRS synchrotron beamline using a unique VUV Fourier-transform spectrometer. Measurements were carried out in plasmas operated in helium with air-like N{sub 2}/O{sub 2} (4:1) admixtures. A maximum in the O-atom concentration of (9.1 {+-} 0.7) Multiplication-Sign 10{sup 20} m{sup -3} was found at admixtures of 0.35 vol. %, while the N-atom concentration exhibits a maximum of (5.7 {+-} 0.4) Multiplication-Sign 10{sup 19} m{sup -3} at 0.1 vol. %.

Niemi, K.; O'Connell, D.; Gans, T. [York Plasma Institute, Department of Physics, University of York, York YO10 5DD (United Kingdom); Oliveira, N. de; Joyeux, D.; Nahon, L. [Synchrotron Soleil, l'Orme des Merisiers, St. Aubin BP 48, 91192 Gif sur Yvette Cedex (France); Booth, J. P. [Laboratoire de Physique des Plasmas-CNRS, Ecole Polytechnique, 91128 Palaiseau (France)

2013-07-15T23:59:59.000Z

480

Simulations of electron-cloud heat load for the cold arcs of the CERN Large Hadron Collider and its high-luminosity upgrade scenarios  

E-Print Network [OSTI]

The heat load generated by an electron cloud in the cold arcs of the Large Hadron Collider (LHC) is a concern for operation near and beyond nominal beam current. We report the results of simulation studies, with updated secondary- emission models, which examine the severity of the electron heat load over a range of possible operation parameters, both for the nominal LHC and for various luminosity-upgrade scenarios, such as the so-called ‘‘full crab crossing’’ and ‘‘early separation’’ schemes, the ‘‘large Piwinski angle’’ scheme, and a variant of the latter providing ‘‘compatibility’’ with the (upgraded) LHCb experiment. The variable parameters considered are the maximum secondary-emission yield, the number of particles per bunch, and the spacing between bunches. In addition, the dependence of the heat load on the longitudinal bunch profile is investigated.

Maury Cuna, H; Zimmermann, F

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high performance cold" 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

High Performance Fuel Design for Next Generation PWRs 2nd Annual Report  

E-Print Network [OSTI]

The overall objective of this NERI project is to examine the potential for a high performance advanced fuel design for Pressurized Water Reactors (PWRs), which would accommodate a substantial increase of core power density ...

Ballinger, Ronald G.

482

Green Buildings and High Performance for Sustainability in the Urban Zones of Contemporary Arab City  

E-Print Network [OSTI]

the control of the climate exchange and in the same time the high-performance of sustainability. The final study how we realize the sustainable urban development with the green buildings in the Arab cities....

Ahmed, K. A.; Bakier, Z. A.

483

Vehicle Technologies Office Merit Review 2014: High Performance DC Bus Film Capacitor  

Broader source: Energy.gov [DOE]

Presentation given by GE Global Research at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about high performance DC bus...

484

Studies of Perovskite Materials for High-Performance Storage Media, Piezoelectric, and Solar Energy Conversion Devices  

E-Print Network [OSTI]

Studies of Perovskite Materials for High-Performance Storage Media, Piezoelectric, and Solar Energy of applications, such as sensing, data storage, and energy conversion. For example, perovskite solid solutions

Rappe, Andrew M.

485

Building America Webinar: High Performance Enclosure Strategies: Part II, New Construction  

Broader source: Energy.gov [DOE]

Date/Time:  August 13, 2014; 3:00-4:30 PM EDTDescription: The webinar is the second in the series on designing and constructing high performance building enclosures, and will focus on effective...

486

A High-Performance Optoelectronic Interconnect Router: Using Increased Bandwidth to Enable Latency Reduction  

E-Print Network [OSTI]

D R A FT 1 A High-Performance Optoelectronic Interconnect Router: Using Increased Bandwidth optoelectronic interconnection network router capable of supplying and efficiently utilizing higher bandwidth routing, interconnection network, latency hiding/reduction techniques, optoelectronic router. 1

Pinkston, Timothy M.

487

What are the Best HVAC Solutions for Low-Load, High Performance Homes?"  

Broader source: Energy.gov [DOE]

This presentation was given at the Summer 2012 DOE Building America meeting on July 26, 2012, and addressed the question ŤWhat are the best HVAC solutions for low-load, high performance homes?"

488

Highly Energy and Performance Efficient Embedded Computing through Approximately Correct Arithmetic  

E-Print Network [OSTI]

) a mathematically rigorous foundation characterizing a trade- off between energy consumed and the quality. (ii) Techniques which trade off energy for quality of solution. These are typi- callyHighly Energy and Performance Efficient Embedded Computing through Approximately Correct Arithmetic

489

Origins of Analysis Methods in Energy Simulation Programs Used for High Performance Commercial Buildings  

E-Print Network [OSTI]

Current designs of high performance buildings utilize hourly building energy simulations of complex, interacting systems. Such simulations need to quantify the benefits of numerous features including: thermal mass, HVAC systems and, in some cases...

Oh, Sukjoon

2013-08-19T23:59:59.000Z

490

Improved Heat Transfer and Performance of High Intensity Combustion Systems for Reformer Furnace Applications  

E-Print Network [OSTI]

and should enable substantial capital cost savings in new furnace applications. Recent performance improvements established from tests of high intensity combustion systems are described along with advances made in the analytical prediction of design...

Williams, F. D. M.; Kondratas, H. M.

1983-01-01T23:59:59.000Z

491

High Performance Fuel Design for Next Generation PWRs: 11th Quarterly Report  

E-Print Network [OSTI]

I. Technical Narrative: The overall objective of this NERI project is to examine the potential for a high performance advanced fuel for Pressurized Water Reactors (PWRs), which would accommodate a substantial increase of ...

Kazimi, Mujid S.

492

Pedestal structure and stability in high-performance plasmas on Alcator C-Mod  

E-Print Network [OSTI]

High-performance operation in tokamaks is characterized by the formation of a pedestal, a region of suppressed transport and steep gradients in density, temperature, and pressure near the plasma edge. The pedestal height ...

Walk, John Reel, Jr

2014-01-01T23:59:59.000Z

493

Vehicle Technologies Office Merit Review 2013: Accelerating Predictive Simulation of IC Engines with High Performance Computing  

Broader source: Energy.gov [DOE]

Presentation given by Oak Ridge National Laboratory at the 2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting about simulating internal combustion engines using high performance computing.

494

High Performance Computing for Sequence Analysis (2010 JGI/ANL HPC Workshop)  

SciTech Connect (OSTI)

Chris Oehmen of the Pacific Northwest National Laboratory gives a presentation on "High Performance Computing for Sequence Analysis" at the JGI/Argonne HPC Workshop on January 25, 2010.

Oehmen, Chris [PNNL] [PNNL

2010-01-25T23:59:59.000Z

495

CAVERNsoft G2: A Toolkit for High Performance Tele-Immersive Collaboration  

E-Print Network [OSTI]

Chicago, IL 60607, USA 1 312 996 3002 cavern@evl.uic.edu ABSTRACT This paper describes the design, networking, database management, collaboration and high performance computing. CAVERN, the CAVE Research

Johnson, Andrew

496

Thermal properties of granular silica aerogel for high-performance insulation systems  

E-Print Network [OSTI]

Based on mounting evidence in support of anthropogenic global climate change, there is an urgency for developments in high-performance building techniques and technologies. New construction projects provide substantial ...

Neugebauer, Adam (Adam Halbert)

2013-01-01T23:59:59.000Z

497

Principal-agent alignment and relational incentive contracts in high-performance service operations  

E-Print Network [OSTI]

This thesis focuses on the creation of a high-performance service operations organization. As organizations increasingly compete on service quality, increased attention has been given to measuring, tracking, and improving ...

Doss, Ryan Garrett

2014-01-01T23:59:59.000Z

498

Workshop on programming languages for high performance computing (HPCWPL): final report.  

SciTech Connect (OSTI)

This report summarizes the deliberations and conclusions of the Workshop on Programming Languages for High Performance Computing (HPCWPL) held at the Sandia CSRI facility in Albuquerque, NM on December 12-13, 2006.

Murphy, Richard C.

2007-05-01T23:59:59.000Z

499

E-Print Network 3.0 - actuators alternative high-performance...  

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

1 2 3 4 5 > >> 1 HIERARCHICAL ACTUATORS Dryver Huston1 Summary: , VT 05495 ABSTRACT Mechanical actuators are integral parts of many high-performance systems. Presently... could be...

500

Guest Editorial for Special Issue on High-Performance Multichip Interconnections  

E-Print Network [OSTI]

The ten papers in this special issue focus on high-performance multichip interconnections. The papers span novel transmitter and receiver equalization and data-recovery architectures, channel architecture organizations, ...

Stojanovic, Vladimir Marko