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


1

GROWDERS Demonstration of Grid Connected Electricity Systems...  

Open Energy Info (EERE)

GROWDERS Demonstration of Grid Connected Electricity Systems (Smart Grid Project) Jump to: navigation, search Project Name GROWDERS Demonstration of Grid Connected Electricity...

2

Utility Grid-Connected Distributed Power Systems  

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

Grid-Connected Distributed Power Systems National Solar Energy Conference ASES Solar 96 Asheville, NC April 1996 Donald E. OsbornDavid E. Collier Sacramento Municipal Utility...

3

GROWDERS Demonstration of Grid Connected Electricity Systems...  

Open Energy Info (EERE)

Jump to: navigation, search Project Name GROWDERS Demonstration of Grid Connected Electricity Systems Country Spain Coordinates 40.338169, -3.438721 Loading map......

4

Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric | Open  

Open Energy Info (EERE)

Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric Jump to: navigation, search Tool Summary Name: Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric Agency/Company /Organization: United States Agency for International Development Sector: Energy Resource Type: Training materials Website: www.energytoolbox.org/gcre/mod_4/index.shtml Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric Screenshot References: Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric[1] Logo: Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric GCREhydro.JPG References ↑ "Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric" Retrieved from "http://en.openei.org/w/index.php?title=Grid-Connected_Renewable_Energy_Generation_Toolkit-Hydroelectric&oldid=375082

5

Selective compensation of voltage harmonics in grid-connected microgrids  

E-Print Network (OSTI)

1 Selective compensation of voltage harmonics in grid-connected microgrids Mehdi Savaghebia , Juan is proposed for selective compensation of main voltage harmonics in a grid- connected microgrid. The aim level. Keywords Distributed Generator (DG); microgrid; grid-connected; voltage harmonics compensation. 1

Vasquez, Juan Carlos

6

Design of a single-phase grid-connected photovoltaic systems based on Fuzzy-PID controller  

Science Conference Proceedings (OSTI)

The output power of photovoltaic (PV) module varies with module temperature, solar isolation and 1oads changes etc. In order to control the output power of single-phase grid-connected PV system according to the output power PV arrays. In this paper a ... Keywords: DC/AC inverter, fuzzy-PID control, grid-connected, photovoltaic system

Fengwen Cao; Yiwang Wang

2009-09-01T23:59:59.000Z

7

Modeling Grid-Connected Hybrid Electric Vehicles Using ADVISOR  

DOE Green Energy (OSTI)

Presents an electric utility grid-connected energy management strategy for a parallel hybrid electric vehicle using ADVISOR, a modeling tool.

Markel, T.; Wipke, K.

2001-01-01T23:59:59.000Z

8

Case Studies of Grid-Connected Photovoltaic Systems, Vol. 1  

Science Conference Proceedings (OSTI)

This interim report documents a number of grid-connected photovoltaic (PV) case studies, covering a broad range of different system and project types.

2002-03-12T23:59:59.000Z

9

Grid-Connected Renewable Energy Generation Toolkit-Geothermal...  

Open Energy Info (EERE)

for International Development Sector: Energy Focus Area: Geothermal Resource Type: Training materials Website: www.energytoolbox.orggcremod3index.shtml Grid-Connected...

10

Grid-Connected Renewable Energy Systems | Department of Energy  

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

Grid-Connected Renewable Energy Systems Grid-Connected Renewable Energy Systems Grid-Connected Renewable Energy Systems July 2, 2012 - 8:21pm Addthis When connecting a home energy system to the electric grid, research and consider equipment required as well as your power provider’s requirements and agreements. | Photo courtesy of Solar Design Associates, Inc. When connecting a home energy system to the electric grid, research and consider equipment required as well as your power provider's requirements and agreements. | Photo courtesy of Solar Design Associates, Inc. What are the key facts? While renewable energy systems are capable of powering houses and small businesses without any connection to the electricity grid, many people prefer the advantages that grid-connection offers. Aside from the major small renewable energy system components, you

11

Grid Connected Photovoltaic Systems with SmartGrid functionality.  

E-Print Network (OSTI)

?? SummaryThis master?s thesis is focused on the design of grid connected PV power stage inverter. This inverter will be used for solar power application (more)

Massawe, Henry Benedict

2013-01-01T23:59:59.000Z

12

Extremely Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Extremely Low Temperature Extremely Low Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Extremely Low Temperature Dictionary.png Extremely Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid less than 100°C is considered to to be "extremely low temperature." Note: Sanyal classified fluids of these temperatures to be "non-electrical grade" in 2005, but electricity has since been generated from these

13

Understanding the Benefits of Dispersed Grid-Connected Photovoltaics: From Avoiding the Next Major Outage to Taming Wholesale Power Markets  

SciTech Connect

Thanks to new solar resource assessment techniques using cloud cover data available from geostationary satellites, it is apparent that grid-connected PV installations can serve to enhance electric grid reliability, preventing or hastening recovery from major power outages and serving to mitigate extreme price spikes in wholesale energy markets. (author)

Letendre, Steven E.; Perez, Richard

2006-07-15T23:59:59.000Z

14

Grid-Connected Renewables Program | Department of Energy  

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

Grid-Connected Renewables Program Grid-Connected Renewables Program Grid-Connected Renewables Program < Back Eligibility Commercial Industrial Institutional Local Government Nonprofit Schools State Government Savings Category Bioenergy Wind Buying & Making Electricity Maximum Rebate Not specified Program Info Funding Source New Jersey Societal Benefits Charge (public benefits fund) State New Jersey Program Type Performance-Based Incentive Rebate Amount Varies by project; solicitation lists recommended incentive levels 10-20% may be requested as an up-front grant Provider State of New Jersey Board of Public Utilities Note: The deadline for the most recent solicitation has passed and the information in this summary is specific to this closed program solicitation. The New Jersey Office of Clean Energy 2013-2014 Budget

15

GROWDERS Demonstration of Grid Connected Electricity Systems (Smart Grid  

Open Energy Info (EERE)

GROWDERS Demonstration of Grid Connected Electricity Systems (Smart Grid GROWDERS Demonstration of Grid Connected Electricity Systems (Smart Grid Project) Jump to: navigation, search Project Name GROWDERS Demonstration of Grid Connected Electricity Systems Country France Coordinates 46.134171°, 1.933594° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":46.134171,"lon":1.933594,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

16

Transatlantic Workshop on Electric Vehicles and Grid Connectivity |  

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

Transatlantic Workshop on Electric Vehicles and Grid Connectivity Transatlantic Workshop on Electric Vehicles and Grid Connectivity Transatlantic Workshop on Electric Vehicles and Grid Connectivity November 17, 2010 - 2:33pm Addthis On November 17, 2010, the United States and the European Union, under the auspices of the U.S.-EU Energy Council, invited equipment suppliers and manufacturers, utilities, policymakers, standards organizations, and government agencies to discuss mutually beneficial near-term actions to accelerate the introduction of electric vehicles to the market - with a particular focus on government policy and cooperative efforts to spur vehicle demonstration and deployment. For more information about the workshop, including participant presentations, click here. Addthis Related Articles Obama Administration Launches Competition for Three New Manufacturing

17

High Penetration, Grid Connected Photovoltaic Technology Codes and Standards: Preprint  

DOE Green Energy (OSTI)

This paper reports the interim status in identifying and reviewing photovoltaic (PV) codes and standards (C&S) and related electrical activities for grid-connected, high-penetration PV systems with a focus on U.S. electric utility distribution grid interconnection.

Basso, T. S.

2008-05-01T23:59:59.000Z

18

Case Studies of Grid-Connected Photovoltaic Systems, Vol. 2  

Science Conference Proceedings (OSTI)

The photovoltaic (PV) industry is growing rapidly, and PV power is likely to become an increasingly significant source of distributed generation as its cost declines over the next ten years. This report documents a number of grid-connected photovoltaic case studies covering a broad range of system configurations and project types. The report provides field experience useful to improve the design of future PV systems and identifies problems that need to be addressed to promote the integration of PV power ...

2003-03-25T23:59:59.000Z

19

Case Studies of Grid-Connected Photovoltaic Systems, Volume 3  

Science Conference Proceedings (OSTI)

The photovoltaics industry is growing rapidly, and photovoltaic (PV) power is likely to become an increasingly significant source of distributed generation as its cost declines over the next ten years. This report completes a series of three volumes documenting more than a dozen grid-connected PV case studies in all and covering a broad range of system configurations and project types. The report provides field experience useful to improve the design of future PV systems and identifies problems that need...

2004-03-30T23:59:59.000Z

20

Grid-Connected Renewable Energy Systems Case Studies | Open Energy  

Open Energy Info (EERE)

Grid-Connected Renewable Energy Systems Case Studies Grid-Connected Renewable Energy Systems Case Studies Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Grid-Connected Renewable Energy Systems Case Studies Agency/Company /Organization: World Bank Sector: Energy Topics: Market analysis, Co-benefits assessment, Background analysis Resource Type: Lessons learned/best practices, Case studies/examples Website: web.worldbank.org/WBSITE/EXTERNAL/TOPICS/EXTENERGY2/EXTRENENERGYTK/0,, Country: Uganda, Mexico, Turkey, Germany, Sri Lanka, China Eastern Africa, Central America, Western Asia, Western Europe, Southern Asia, Eastern Asia Coordinates: 1.373333°, 32.290275° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":1.373333,"lon":32.290275,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Grid-Connected Renewable Energy Generation Toolkit-Biomass | Open Energy  

Open Energy Info (EERE)

Grid-Connected Renewable Energy Generation Toolkit-Biomass Grid-Connected Renewable Energy Generation Toolkit-Biomass Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Grid-Connected Renewable Energy Generation Toolkit-Biomass Agency/Company /Organization: United States Agency for International Development Sector: Energy Focus Area: Biomass Resource Type: Training materials Website: www.energytoolbox.org/gcre/mod_2/index.shtml#update Grid-Connected Renewable Energy Generation Toolkit-Biomass Screenshot References: Grid-Connected Renewable Energy-Biomass[1] Logo: Grid-Connected Renewable Energy Generation Toolkit-Biomass Biomass Toolkit References ↑ "Grid-Connected Renewable Energy-Biomass" Retrieved from "http://en.openei.org/w/index.php?title=Grid-Connected_Renewable_Energy_Generation_Toolkit-Biomass&oldid=375080

22

Grid-Connected Renewable Energy Generation Toolkit-Wind | Open Energy  

Open Energy Info (EERE)

Grid-Connected Renewable Energy Generation Toolkit-Wind Grid-Connected Renewable Energy Generation Toolkit-Wind Jump to: navigation, search Tool Summary Name: Grid-Connected Renewable Energy Generation Toolkit-Wind Agency/Company /Organization: United States Agency for International Development Sector: Energy Focus Area: Wind Resource Type: Training materials Website: www.energytoolbox.org/gcre/mod_6/index.shtml Grid-Connected Renewable Energy Generation Toolkit-Wind Screenshot References: Grid-Connected Renewable Energy Generation Toolkit-Wind[1] Logo: Grid-Connected Renewable Energy Generation Toolkit-Wind GCREwind.JPG References ↑ "Grid-Connected Renewable Energy Generation Toolkit-Wind" Retrieved from "http://en.openei.org/w/index.php?title=Grid-Connected_Renewable_Energy_Generation_Toolkit-Wind&oldid=375084"

23

Grid-Connected Renewable Energy Generation Toolkit-Solar | Open Energy  

Open Energy Info (EERE)

Grid-Connected Renewable Energy Generation Toolkit-Solar Grid-Connected Renewable Energy Generation Toolkit-Solar Jump to: navigation, search Tool Summary Name: Grid-Connected Renewable Energy Generation Toolkit-Solar Agency/Company /Organization: United States Agency for International Development Sector: Energy Focus Area: Solar Resource Type: Training materials Website: www.energytoolbox.org/gcre/mod_5/index.shtml Grid-Connected Renewable Energy Generation Toolkit-Solar Screenshot References: Grid-Connected Renewable Energy Generation Toolkit-Solar[1] Logo: Grid-Connected Renewable Energy Generation Toolkit-Solar GCREsolar.JPG References ↑ "Grid-Connected Renewable Energy Generation Toolkit-Solar" Retrieved from "http://en.openei.org/w/index.php?title=Grid-Connected_Renewable_Energy_Generation_Toolkit-Solar&oldid=375083

24

Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced...  

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

You are here Home Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal System Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal...

25

Extreme Maximum Land Surface Temperatures  

Science Conference Proceedings (OSTI)

There are numerous reports in the literature of observations of land surface temperatures. Some of these, almost all made in situ, reveal maximum values in the 5070C range, with a few, made in desert regions, near 80C. Consideration of a ...

J. R. Garratt

1992-09-01T23:59:59.000Z

26

Subsystem engineering and development of grid-connected photovoltaic systems  

DOE Green Energy (OSTI)

The experience gained in fielding residential and intermediate sized photovoltaic application experiments is summarized. This experience is used to guide the engineering and development of array and power conditioning subsystems for grid-connected photovoltaic systems. A major consideration in this development effort is cost. Through innovative engineering, using a modular building block approach for the array subsystem, it is now possible to construct array fields, in moderate quantities, for about $52/m/sup 2/ excluding the photovoltaic modules. Similarly, results of power conditioning subsystem development indicate a projected cost of about $0.25/W/sub p/ for advanced units with conversion efficiencies in excess of 90%.

Burgess, E.L.; Post, H.N.; Key, T.S.

1982-01-01T23:59:59.000Z

27

GROWDERS Demonstration of Grid Connected Electricity Systems (Smart Grid  

Open Energy Info (EERE)

(Spain) (Spain) Jump to: navigation, search Project Name GROWDERS Demonstration of Grid Connected Electricity Systems Country Spain Coordinates 40.338169°, -3.438721° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.338169,"lon":-3.438721,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

28

Performance Parameters for Grid-Connected PV Systems  

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

National Renewable Energy Laboratory National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov Operated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy by Midwest Research Institute * Battelle Contract No. DE-AC36-99-GO10337 B. Marion, J. Adelstein, and K. Boyle National Renewable Energy Laboratory H. Hayden, B. Hammond, T. Fletcher, B. Canada, and D. Narang Arizona Public Service Co. D. Shugar, H. Wenger, A. Kimber, and L. Mitchell PowerLight Corporation G. Rich and T. Townsend First Solar Prepared for the 31 st IEEE Photovoltaics Specialists Conference and Exhibition Lake Buena Vista, Florida January 3-7, 2005 February 2005 * NREL/CP-520-37358 Performance Parameters for Grid-Connected PV Systems

29

Performance model for grid-connected photovoltaic inverters.  

SciTech Connect

This document provides an empirically based performance model for grid-connected photovoltaic inverters used for system performance (energy) modeling and for continuous monitoring of inverter performance during system operation. The versatility and accuracy of the model were validated for a variety of both residential and commercial size inverters. Default parameters for the model can be obtained from manufacturers specification sheets, and the accuracy of the model can be further refined using measurements from either well-instrumented field measurements in operational systems or using detailed measurements from a recognized testing laboratory. An initial database of inverter performance parameters was developed based on measurements conducted at Sandia National Laboratories and at laboratories supporting the solar programs of the California Energy Commission.

Boyson, William Earl; Galbraith, Gary M.; King, David L.; Gonzalez, Sigifredo

2007-09-01T23:59:59.000Z

30

Case study: Feasibility analysis of renewable energy supply systems in a small grid connected resort.  

E-Print Network (OSTI)

??This paper presents a case study on the feasibility of a small grid connected resort in the marine west coast climate of Canada to implement (more)

Robins, Jody

2009-01-01T23:59:59.000Z

31

EERE News: Nevada Deploys First U.S. Commercial, Grid-Connected...  

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

Subscribe RSS Feeds Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal System April 12, 2013 Photo of pipelines connected to a geothermal heating plant....

32

Storage Size Determination for Grid-Connected Photovoltaic Systems  

E-Print Network (OSTI)

In this paper, we study the problem of determining the size of battery storage used in grid-connected photovoltaic (PV) systems. In our setting, electricity is generated from PV and is used to supply the demand from loads. Excess electricity generated from the PV can be stored in a battery to be used later on, and electricity must be purchased from the electric grid if the PV generation and battery discharging cannot meet the demand. The objective is to minimize the electricity purchase from the electric grid while at the same time choosing an appropriate battery size. More specifically, we want to find a unique critical value (denoted as $E_{max}^c$) of the battery size such that the cost of electricity purchase remains the same if the battery size is larger than or equal to $E_{max}^c$, and the cost is strictly larger if the battery size is smaller than $E_{max}^c$. We propose an upper bound on $E_{max}^c$, and show that the upper bound is achievable for certain scenarios. For the case with ideal PV generat...

Ru, Yu; Martinez, Sonia

2011-01-01T23:59:59.000Z

33

Protection and Control for Grid Connected Photovoltaic Power Generation System Based on Instantaneous Power Theory  

Science Conference Proceedings (OSTI)

Reliable protection and reasonable control run an important role in grid connected PV power generation system. The detection and calculation of real and reactive power are the bases of many inverter resident passive and active islanding detection method ... Keywords: Distributed generation, photovoltaic system, grid connected, protection and control, power theory

Fei Wang; Chengcheng Zhang

2009-05-01T23:59:59.000Z

34

Performance Test Protocol for Evaluating Inverters Used in Grid-Connected  

E-Print Network (OSTI)

Performance Test Protocol for Evaluating Inverters Used in Grid-Connected Photovoltaic Systems....................................................................................................................................... 36 A1 Simplified Photovoltaic I-V Curve Model Inverters Used in Grid-Connected Photovoltaic Systems 1 Overview One measure of the maturity of an industry

35

Battery Sizing for Grid Connected PV Systems with Fixed Minimum Charging/Discharging Time  

E-Print Network (OSTI)

Battery Sizing for Grid Connected PV Systems with Fixed Minimum Charging/Discharging Time Yu Ru, Jan Kleissl, and Sonia Martinez Abstract-- In this paper, we study a battery sizing problem for grid-connected photovoltaic (PV) systems assuming that the battery charging/discharging limit scales linearly with its

Martínez, Sonia

36

Original article: Selective compensation of voltage harmonics in grid-connected microgrids  

Science Conference Proceedings (OSTI)

In this paper, a novel approach is proposed for selective compensation of main voltage harmonics in a grid-connected microgrid. The aim of compensation is to provide a high voltage quality at the point of common coupling (PCC). PCC voltage quality is ... Keywords: Distributed generator (DG), Grid-connected, Microgrid, Voltage harmonics compensation

Mehdi Savaghebi, Juan C. Vasquez, Alireza Jalilian, Josep M. Guerrero, Tzung-Lin Lee

2013-05-01T23:59:59.000Z

37

Simulation for Performance Analysis of Grid-Connected Induction Generators with Input Voltage Control  

Science Conference Proceedings (OSTI)

With the increasing application of wind energy, various technologies are developed for analyzing the performance of grid-connected induction generator (GIG) based wind energy conversion systems (WECSs). Input voltage control is one among them. In the ... Keywords: grid-connected induction generators (GIGs), wind energy conversion systems (WECSs), input voltage control, performance analysis, MATLAB

Farhad Ilahi Bakhsh, Shirazul Islam, Sayeed Ahmad

2013-04-01T23:59:59.000Z

38

Chile-GTZ Public Properties for Grid-connected Renewable Energy Projects |  

Open Energy Info (EERE)

Properties for Grid-connected Renewable Energy Projects Properties for Grid-connected Renewable Energy Projects Jump to: navigation, search Logo: Chile-GTZ Public Properties for Grid-connected Renewable Energy Projects Name Chile-GTZ Public Properties for Grid-connected Renewable Energy Projects Agency/Company /Organization GTZ on behalf of the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) Sector Energy Topics Background analysis Website http://www.gtz.de/en/themen/27 Program Start 2008 Program End 2011 Country Chile UN Region Latin America and the Caribbean References Public Properties for Grid-connected Renewable Energy Projects[1] GTZ is working with Chile with the following objective: "Sites on state-owned properties are identified, assessed and marketed to enable the

39

Observed Trends and Changes in Temperature Extremes over Argentina  

Science Conference Proceedings (OSTI)

In this note, changes in temperature extremes over a 40-yr period are analyzed, based on daily minimum and maximum temperatures over Argentina. Trend analysis was performed on seasonal means, standard deviations, and extremes (5th and 95th ...

Matilde Rusticucci; Mariana Barrucand

2004-10-01T23:59:59.000Z

40

Global Grid-Connected Hybrid-Electric Vehicle Project: Year-End Summary Report, November 2000  

Science Conference Proceedings (OSTI)

This interim report summarizes research conducted under the auspices of the Global Grid-Connected Hybrid Electric Vehicle Project, an EPRI initiative to promote the use of grid-connected electric technologies in heavy-duty applications. One study in the program evaluated the potential of converting a Ford E-350 or E-450 Super Duty chassis into a grid-connected hybrid electric vehicle airport shuttle bus and a Ford Explorer chassis into a dedicated electric vehicle delivery van. A second study analyzed ad...

2000-12-13T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Maine Deploys First U.S. Commercial, Grid-Connected Tidal Energy Project |  

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

Maine Deploys First U.S. Commercial, Grid-Connected Tidal Energy Maine Deploys First U.S. Commercial, Grid-Connected Tidal Energy Project Maine Deploys First U.S. Commercial, Grid-Connected Tidal Energy Project July 24, 2012 - 1:12pm Addthis NEWS MEDIA CONTACT (202) 586-4940 WASHINGTON -- Today, Energy Secretary Steven Chu recognized the nation's first commercial, grid-connected tidal energy project off the coast of Eastport, Maine. Leveraging a $10 million investment from the Energy Department, Ocean Renewable Power Company (ORPC) will deploy its first commercial tidal energy device into Cobscook Bay this summer. The project, which injected $14 million into the local economy and has supported more than 100 local and supply chain jobs, represents the first tidal energy project in the United States with long-term contracts to sell electricity

42

Mongolia-GTZ Energy Efficiency within the Grid-Connected Energy Supply |  

Open Energy Info (EERE)

within the Grid-Connected Energy Supply within the Grid-Connected Energy Supply Jump to: navigation, search Logo: Mongolia-GTZ Energy Efficiency within the Grid-Connected Energy Supply Name Mongolia-GTZ Energy Efficiency within the Grid-Connected Energy Supply Agency/Company /Organization Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH Partner German Federal Ministry for Economic Cooperation and Development (BMZ), Ministry of Fuel and Energy (MoFE) Sector Energy Topics Background analysis, Policies/deployment programs Website http://www.gtz.de/en/praxis/95 Program Start 2007 Program End 2010 Country Mongolia Eastern Asia References GTZ projects [1] GTZ is working with Mongolia on energy efficiency capacity development for institutions and the private sector. References

43

Maine Project Launches First Grid-Connected Offshore Wind Turbine in the  

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

Maine Project Launches First Grid-Connected Offshore Wind Turbine Maine Project Launches First Grid-Connected Offshore Wind Turbine in the U.S. Maine Project Launches First Grid-Connected Offshore Wind Turbine in the U.S. May 31, 2013 - 11:00am Addthis News Media Contact (202) 586-4940 WASHINGTON - The Energy Department today recognized the nation's first grid-connected offshore floating wind turbine prototype off the coast of Castine, Maine. Led by the University of Maine, this project represents the first concrete-composite floating platform wind turbine to be deployed in the world - strengthening American leadership in innovative clean energy technologies that diversify the nation's energy mix with more clean, domestic energy sources. "Developing America's vast renewable energy resources is an important part of the Energy Department's all-of-the-above strategy to pave the way

44

An economic analysis of grid-connected residential solar photovoltaic power systems  

E-Print Network (OSTI)

The question of the utility grid-connected residential market for photovoltaics is examined from a user-ownership perspective. The price is calculated at which the user would be economically indifferent between

Carpenter, Paul R.

45

Economics of grid-connected small wind turbines in the domestic market  

DOE Green Energy (OSTI)

Exploitation of certain niche markets for small wind turbines is one strategy that could help speed the commercialization of grid-connected small turbines. The authors review the world's turbine manufacturers, the utility grid-connected applications and selected niche markets for grid-connected small wind systems (0.1 to 100 kilowatts). Wind turbine installation and purchase are handled under three different payment scenarios: paid in full up front, paid through a second mortgage, or paid as part of a first mortgage. The authors used a simple payback method to compare these scenarios and analyze the costs and energy produced for three different U.S. small wind turbines. When there is a buy-down program for the small wind turbine combined with other financial factors such as net metering, tax exemptions, and tax credits, a strong market incentive is created for the use of grid-connected small wind turbines.

Forsyth, T.; Tu, P.; Gilbert, J.

2000-06-29T23:59:59.000Z

46

A Homogenized Historical Temperature Extreme Dataset for the United States  

Science Conference Proceedings (OSTI)

A subset of stations from the daily U.S. Historical Climatology Network (HCN) is used as a basis for a historical database of temperature extreme occurrence in the United States. The dataset focuses on daily temperature occurrences that exceed (...

Arthur T. DeGaetano; Robert J. Allen; Kevin P. Gallo

2002-09-01T23:59:59.000Z

47

Regional Analysis of Temperature Extremes: Spatial Analog for Climate Change?  

Science Conference Proceedings (OSTI)

The statistical theory of extreme values is applied to daily minimum and maximum temperature time series in the U.S. Midwest and Southeast. If the spatial pattern in the frequency of extreme temperature events can be explained simply by shifts in ...

Barbara G. Brown; Richard W. Katz

1995-01-01T23:59:59.000Z

48

A $5 Million Boost for Midsize Wind Turbines and Grid Connectivity |  

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

A $5 Million Boost for Midsize Wind Turbines and Grid Connectivity A $5 Million Boost for Midsize Wind Turbines and Grid Connectivity A $5 Million Boost for Midsize Wind Turbines and Grid Connectivity September 14, 2010 - 10:52am Addthis Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs What does this mean for me? With better forecasting, utilities can more reliably connect variable power sources such as wind energy with electricity grids, and can decrease their need for back-up energy sources such as natural gas and hydropower. Last week's Geek-Up talked about the Energy Department's Wind for Schools program and how it is helping schools use wind turbines to power their classrooms. Yesterday, U.S. Energy Secretary Steven Chu announced more than $5 million in funding to help bring wind-generated power to not only more

49

Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal  

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

Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal System Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal System April 12, 2013 - 12:00pm Addthis WASHINGTON -- As part of the Obama Administration's all-of-the-above energy strategy, the Energy Department today recognized the nation's first commercial enhanced geothermal system (EGS) project to supply electricity to the grid. Based in Churchill County, Nevada, Ormat Technologies' Desert Peak 2 EGS project has increased power output of its nearby operating geothermal field by nearly 38 percent - providing an additional 1.7 megawatts of power to the grid and validating this emerging clean energy technology. "Developing America's vast renewable energy resources sustainably is an

50

Plug and Play Distributed Power Systems for Smart-Grid Connected Building |  

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

Emerging Technologies » Plug and Play Distributed Power Systems Emerging Technologies » Plug and Play Distributed Power Systems for Smart-Grid Connected Building Plug and Play Distributed Power Systems for Smart-Grid Connected Building The U.S. Department of Energy (DOE) is currently conducting research into plug-and-play distributed power systems for smart- grid connected buildings. Project Description This project seeks to advance and demonstrate a plug-and-play building energy micro-grid concept for integrating energy storage, loads, and sources at the building level with the external utility grid. The micro-grid demonstration is expected to include the following: Diesel synchronous generator Energy storage device Otis regenerative elevator system representing building critical loads Smart interface with the utility grid

51

Analysis of Ultracapacitors for Use in a Grid-Connected Hybrid Electric Vehicle  

Science Conference Proceedings (OSTI)

This study assessed the benefits of combining the unique energy-storage capabilities of ultracapacitors with a grid-connected hybrid electric vehicle (HEV). Ultracapacitors reduce the peak power requirements of the power pack and could thus allow the use of alternate battery technologies with better cost and life cycle characteristics.

2002-10-30T23:59:59.000Z

52

Original Articles: Universal wind turbine working in grid-connected and island operating modes  

Science Conference Proceedings (OSTI)

In the future power system based on active distribution grid, allowing some portion to be disconnected, the concept of universal wind turbine systems may arise. This concept covers both grid-connected and island operations. This may happen if the voltage ... Keywords: Distributed generation, Droop control, Resynchronization, Wind power

Mario Rizo, Marco Liserre, Emilio Bueno, Francisco J. RodrGuez, Francisco Huerta

2013-05-01T23:59:59.000Z

53

Grid-Connected Marine Current Generation System Power Smoothing Control Using Supercapacitors  

E-Print Network (OSTI)

Grid-Connected Marine Current Generation System Power Smoothing Control Using Supercapacitors to reduce the fluctuation of generator power. In the second step, Supercapacitor (SC) Energy Storage System fluctuation, swell effect, power smoothing control, supercapacitor. I. [NTRODUCTION [n the recent years

Paris-Sud XI, Université de

54

Enhanced modeling and control of VSIs in microgrids operating in grid-connected mode  

Science Conference Proceedings (OSTI)

This paper focus on the influence of filter dynamics on the performance and stability of current control loops of three-phase, pulse-width modulation (PWM) voltage source inverters (VSIs) in grid-connected operating mode. The analysis considers the application ...

Leonardo Rese; Antonio Simoes Costa; Aguinaldo S. e Silva

2012-01-01T23:59:59.000Z

55

Remote performance check and automated failure identification for grid-connected PV systems  

E-Print Network (OSTI)

energy yield against an expected, simulated value. A PV simulation model, which employs inexpensiveRemote performance check and automated failure identification for grid-connected PV systems reliable operation of small systems up to 5 kWp. The detection and identification of a failure is strongly

Heinemann, Detlev

56

Multimodel Detection and Attribution of Extreme Temperature Changes  

Science Conference Proceedings (OSTI)

Recent studies have detected anthropogenic influences due to increases in greenhouse gases on extreme temperature changes during the latter half of the 20th century at global and regional scales. Most of the studies, however, were based on a ...

Seung-Ki Min; Xuebin Zhang; Francis Zwiers; Hideo Shiogama; Yu-Shiang Tung; Michael Wehner

57

Assessing the Reliability and Economics of Wide-Scale Grid-Connected  

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

Assessing the Reliability and Economics of Wide-Scale Grid-Connected Assessing the Reliability and Economics of Wide-Scale Grid-Connected Distributed Energy Generation with Application to Electric Power Systems Under Stress Speaker(s): Hisham Zerriffi Date: November 13, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Kristina LaCommare Electric power systems can be disrupted due to a variety of stress circumstances. These can range from constraints on the physical infrastructure as a result of under-capacity problems to deliberate attacks in times of conflict. Stress conditions can manifest themselves in a variety of ways and determining both the nature of the stress and the best mathematical representation of that stress in the model is complicated. This talk details a quantitative comparison of the reliability of an

58

MHK Projects/Evopod E35 35kW grid connected demonstrator | Open Energy  

Open Energy Info (EERE)

E35 35kW grid connected demonstrator E35 35kW grid connected demonstrator < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":55.3028,"lon":-5.59772,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

59

Four Federal Grid-Connected Photovoltaic Systems: Powering Our Nation's Capital with Solar  

DOE Green Energy (OSTI)

One of the fastest growing markets for photovoltaics (PV) is the urban sector. Municipal planners have discovered that PV systems operate favorably in their urban areas, and can be aesthetically integrated into the urban landscape. The federal government has a long history of using PV in a variety of applications, but until recently few applications have been in urban environments. During the last five years, four grid-connected PV systems have been installed on federally owned or federally leased facilities in the Washington, D.C. area: (1) Earth Day Park, (2) U.S. Department of Energy Headquarters, (3) the Pentagon, and (4) Federal Energy Regulatory Commission Headquarters. This paper reviews these four urban, grid-connected systems-particularly the issues of siting, permitting, and grid interconnection.

Plympton, P.; Kappaz, P.; Kroposki, B.; Stafford, B.; Thornton, J.

2001-04-16T23:59:59.000Z

60

MHK Projects/Evopod E1 1 10 scale grid connected demonstrator | Open Energy  

Open Energy Info (EERE)

Evopod E1 1 10 scale grid connected demonstrator Evopod E1 1 10 scale grid connected demonstrator < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":54.388,"lon":-5.566,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

EPRI-DOE Handbook Supplement of Energy Storage for Grid Connected Wind Generation Applications  

Science Conference Proceedings (OSTI)

To date, the use of energy storage systems to optimize wind power generation has been limited to small, off-grid rural or village power applications plus a few technology demonstration-scale battery storage projects for grid connected applications. However, recent developments in advanced energy storage technologies and other technical, economic, and social factors suggest a promising future for such energy storage applications. This Handbook Supplement provides an objective information resource on the l...

2004-12-15T23:59:59.000Z

62

Grid-connected and control of MPPT for wind power generation systems based on the SCIG  

Science Conference Proceedings (OSTI)

This paper adopts a main circuit structure with back-to-back PWM converter, in which generator-side using direct torque control method, and grid-side adopts three-phase VSR inner current decoupling control based feed forward control algorithms, and this ... Keywords: back-to-back, grid-connected, maximum power point tracking (MPPT), squirrel cage induction generator (SCIG), wind-turbine generation system

Yidong Chen; Yulin Yang; Liqiao Wang; Zhiyun Jia; Weiyang Wu

2010-03-01T23:59:59.000Z

63

Evolutionary programming versus artificial immune system in evolving neural network for grid-connected photovoltaic system output prediction  

Science Conference Proceedings (OSTI)

This paper presents the evolutionary neural networks for the prediction of energy output from a grid-connected photovoltaic (GCPV) system. Two evolutionary neural network (ENN) models have been proposed using evolutionary programming and artificial immune ... Keywords: artificial immune system (AIS) and prediction, artificial neural network (ANN), correlation coefficient (R), evolutionary programming (EP), grid-connected photovoltaic system (GCPV), multi-layer feedforward neural network (MLFNN), photovoltaic (PV)

Shahril Irwan Sulaiman; Titik Khawa Abdul Rahman; Ismail Musirin; Sulaiman Shaari

2011-06-01T23:59:59.000Z

64

Observed Changes in Return Values of Annual Temperature Extremes over Argentina  

Science Conference Proceedings (OSTI)

Extreme temperature events are one of the most studied extreme events since their occurrence has a huge impact on society. In this study, the frequency of occurrence of absolute extreme temperature events in Argentina is analyzed. Four annual ...

Matilde Rusticucci; Brbara Tencer

2008-11-01T23:59:59.000Z

65

PVUSA experience with power conversion for grid-connected photovoltaic systems  

DOE Green Energy (OSTI)

The Photovoltaics for Utility Scale Application (PVUSA) project was established to demonstrate photovoltaic (PV) systems in grid-connected utility applications. One of PVUSA`s key objectives is to evaluate the performance, reliability, and cost of the PV balance of system (BOS). Power conditioning units (PCUs) are the interface between the dc PV arrays and the ac utility lines, and have proved to be the most critical element in grid-connected PV systems. There are five different models of PCUs at PVUSA`s Davis and Kerman sites. This report describes the design, testing, performance characteristics, and maintenance history of each of these PCUs. PVUSA required PCUs in the power range 25 kW to 500 kW which could operate automatically and reliably under changing conditions of sunlight and changing conditions on the utility grid. Although a number of manufacturers can provide PCUs in this power range, none of these PCUs have been produced in sufficient quantity to allow refinement of a particular model into the highly reliable unit needed for long-term, unattended operation. Factory tests were useful but limited by the inability to test under full power and changing power conditions. The inability to completely test PCUs at the factory resulted in difficulty during startup, field testing, and subsequent operation. PVUSA has made significant progress in understanding the requirements for PCUs in grid-connected PV applications and improving field performance. This record of PVUSA`s experience with a variety of PCUs is intended to help utilities and their suppliers identify and retain the good performance characteristics of PCUs, and to make improvements where necessary to meet the needs of utilities.

Stolte, W.

1995-11-01T23:59:59.000Z

66

Agelidis, Inverter for Single-Phase Grid Connected Photovoltaic Systems An Overview, Power Electron  

E-Print Network (OSTI)

Abstract- An overview on recent developments and a summary of the state-of-the-art of inverter technology in Europe for single-phase grid-connected Photovoltaic (PV) systems for power levels up to 5 kW is provided in this paper. The information includes details not only on the topologies commercially available but also on the switching devices employed and the associated switching frequencies, efficiency, price trends and market share. Finally, the paper outlines issues associated with the development of relevant international industry standards affecting PV inverter technology. I.

Martina Calais; Johanna Myrzik; Ted Spoone; Vassilios G. Agelidis

2002-01-01T23:59:59.000Z

67

Smart Energy Management and Control for Fuel Cell Based Micro-Grid Connected Neighborhoods  

DOE Green Energy (OSTI)

Fuel cell power generation promises to be an efficient, pollution-free, reliable power source in both large scale and small scale, remote applications. DOE formed the Solid State Energy Conversion Alliance with the intention of breaking one of the last barriers remaining for cost effective fuel cell power generation. The Alliances goal is to produce a core solid-state fuel cell module at a cost of no more than $400 per kilowatt and ready for commercial application by 2010. With their inherently high, 60-70% conversion efficiencies, significantly reduced carbon dioxide emissions, and negligible emissions of other pollutants, fuel cells will be the obvious choice for a broad variety of commercial and residential applications when their cost effectiveness is improved. In a research program funded by the Department of Energy, the research team has been investigating smart fuel cell-operated residential micro-grid communities. This research has focused on using smart control systems in conjunction with fuel cell power plants, with the goal to reduce energy consumption, reduce demand peaks and still meet the energy requirements of any household in a micro-grid community environment. In Phases I and II, a SEMaC was developed and extended to a micro-grid community. In addition, an optimal configuration was determined for a single fuel cell power plant supplying power to a ten-home micro-grid community. In Phase III, the plan is to expand this work to fuel cell based micro-grid connected neighborhoods (mini-grid). The economic implications of hydrogen cogeneration will be investigated. These efforts are consistent with DOEs mission to decentralize domestic electric power generation and to accelerate the onset of the hydrogen economy. A major challenge facing the routine implementation and use of a fuel cell based mini-grid is the varying electrical demand of the individual micro-grids, and, therefore, analyzing these issues is vital. Efforts are needed to determine the most appropriate means of implementing micro-grids and the costs and processes involved with their extended operation. With the development and availability of fuel cell based stand-alone power plants, an electrical mini-grid, encompassing several connected residential neighborhoods, has become a viable concept. A primary objective of this project is to define the parameters of an economically efficient fuel cell based mini-grid. Since pure hydrogen is not economically available in sufficient quantities at the present time, the use of reforming technology to produce and store excess hydrogen will also be investigated. From a broader perspective, the factors that bear upon the feasibility of fuel cell based micro-grid connected neighborhoods are similar to those pertaining to the electrification of a small town with a localized power generating station containing several conventional generating units. In the conventional case, the town or locality would also be connected to the larger grid system of the utility company. Therefore, in the case of the fuel cell based micro-grid connected neighborhoods, this option should also be available. The objectives of this research project are: To demonstrate that smart energy management of a fuel cell based micro-grid connected neighborhood can be efficient and cost-effective;To define the most economical micro-grid configuration; and, To determine how residential micro-grid connected fuel cell(s) can contribute to America's hydrogen energy future.

Dr. Mohammad S. Alam

2006-03-15T23:59:59.000Z

68

Trends in Extreme Temperatures in Relation to Urbanization in the Twin Cities Metropolitan Area, Minnesota  

Science Conference Proceedings (OSTI)

The long-term trends in extreme summer season temperatures across the Twin Cities Metropolitan Area (TCMA) associated with urbanization are examined. To assess trends in extreme temperature data, maximum and minimum temperatures from 1975 to 2002 ...

Shouraseni Sen Roy; Fei Yuan

2009-03-01T23:59:59.000Z

69

Subseasonal and Interannual Temperature Variability in Relation to Extreme Temperature Occurrence over East Asia  

Science Conference Proceedings (OSTI)

This study investigates interannual variability in the frequency of occurrence of daily surface air temperature (SAT) extremes over East Asia in summer and winter between 1979 and 2009. We examine the dominant seasonal SAT patterns, as obtained ...

Hiroyuki Ito; Nathaniel C. Johnson; Shang-Ping Xie

70

PVWATTS Version 2 - Enhanced Spatial Resolution for Calculating Grid-Connected PV Performance: Preprint  

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

PVWATTS Version 2 - PVWATTS Version 2 - Enhanced Spatial Resolution for Calculating Grid-Connected PV Performance Preprint October 2001 * NREL/CP-560-30941 B. Marion, M. Anderberg, R. George, P. Gray-Hann, and D. Heimiller To be presented at the NCPV Program Review Meeting Lakewood, Colorado 14-17 October 2001 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute * * * * Battelle * * * * Bechtel Contract No. DE-AC36-99-GO10337 NOTICE The submitted manuscript has been offered by an employee of the Midwest Research Institute (MRI), a contractor of the US Government under Contract No. DE-AC36-99GO10337. Accordingly, the US Government and MRI retain a nonexclusive royalty-free license to publish or reproduce the published

71

Projected Tasman Sea extremes in sea surface temperature through the 21st Century  

Science Conference Proceedings (OSTI)

Ocean climate extremes have received little treatment in the literature, aside from coastal sea level and temperatures affecting coral bleaching. Further, it is notable that extremes, e.g., temperature and precipitation, are typically not well ...

Eric C. J. Oliver; Simon J. Wotherspoon; Matt A. Chamberlain; Neil J. Holbrook

72

Grid connection of wave power farm using an N-level cascaded H-bridge multilevel inverter  

Science Conference Proceedings (OSTI)

An N-level cascaded H-bridge multilevel inverter is proposed for grid connection of large wave power farms. The point-absorber wave energy converters are individually rectified and used as isolated DC-sources. The variable power characteristics of the ...

Rickard Ekstrm, Mats Leijon

2013-01-01T23:59:59.000Z

73

Grid connected integrated community energy system. Phase II: final stage 2 report. Preliminary design of cogeneration plant  

SciTech Connect

The preliminary design of a dual-purpose power plant to be located on the University of Minnesota is described. This coal-fired plant will produce steam and electric power for a grid-connected Integrated Community Energy System. (LCL)

1978-03-22T23:59:59.000Z

74

Grid connected integrated community energy system. Phase II: final stage 2 report. Outline specifications of cogeneration plant; continued  

SciTech Connect

Specifications are presented for the electrical equipment, site preparation, building construction and mechanical systems for a dual-purpose power plant to be located on the University of Minnesota campus. This power plant will supply steam and electrical power to a grid-connected Integrated Community Energy System. (LCL)

1978-03-22T23:59:59.000Z

75

FORECAST OF ENSEMBLE POWER PRODUCTION BY GRID-CONNECTED PV SYSTEMS Elke Lorenz*, Detlev Heinemann*, Hashini Wickramarathne*, Hans Georg Beyer +  

E-Print Network (OSTI)

FORECAST OF ENSEMBLE POWER PRODUCTION BY GRID-CONNECTED PV SYSTEMS Elke Lorenz*, Detlev Heinemann will highly benefit from forecast information on the expected power production. This forecast information and evaluate an approach to forecast regional PV power production. The forecast quality was investigated

Heinemann, Detlev

76

Electricity storage for grid-connected household dwellings with PV panels  

SciTech Connect

Classically electricity storage for PV panels is mostly designed for stand-alone applications. In contrast, we focus in this article on houses connected to the grid with a small-scale storage to store a part of the solar power for postponed consumption within the day or the next days. In this way the house owner becomes less dependent on the grid and does only pay for the net shortage of his energy production. Local storage solutions pave the way for many new applications like omitting over-voltage of the line and bridging periods of power-line black-out. Since 2009 using self-consumption of PV energy is publicly encouraged in Germany, which can be realised by electric storage. This paper develops methods to determine the optimal storage size for grid-connected dwellings with PV panels. From measurements in houses we were able to establish calculation rules for sizing the storage. Two situations for electricity storage are covered: - the storage system is an optimum to cover most of the electricity needs; - it is an optimum for covering the peak power need of a dwelling. After these calculation rules a second step is needed to determine the size of the real battery. The article treats the aspects that should be taken into consideration before buying a specific battery like lead-acid and lithium-ion batteries. (author)

Mulder, Grietus; Six, Daan [Vlaamse Instelling voor Technologisch Onderzoek, Unit Energy Technology, Mol (Belgium); Ridder, Fjo De [Vrije Universiteit Brussel (Belgium)

2010-07-15T23:59:59.000Z

77

Multiobjective Particle Swarm Optimization for the optimal design of photovoltaic grid-connected systems  

Science Conference Proceedings (OSTI)

Particle Swarm Optimization (PSO) is a highly efficient evolutionary optimization algorithm. In this paper a multiobjective optimization algorithm based on PSO applied to the optimal design of photovoltaic grid-connected systems (PVGCSs) is presented. The proposed methodology intends to suggest the optimal number of system devices and the optimal PV module installation details, such that the economic and environmental benefits achieved during the system's operational lifetime period are both maximized. The objective function describing the economic benefit of the proposed optimization process is the lifetime system's total net profit which is calculated according to the method of the Net Present Value (NPV). The second objective function, which corresponds to the environmental benefit, equals to the pollutant gas emissions avoided due to the use of the PVGCS. The optimization's decision variables are the optimal number of the PV modules, the PV modules optimal tilt angle, the optimal placement of the PV modules within the available installation area and the optimal distribution of the PV modules among the DC/AC converters. (author)

Kornelakis, Aris [Technical University of Crete, Department of Electronic and Computer Engineering, Chania (Greece)

2010-12-15T23:59:59.000Z

78

Mitigation of Voltage and Current Harmonics in Grid-Connected Microgrids Savaghebi, Mehdi; Guerro, Josep M.; Jalilian, Alireza ; Quintero, Juan Carlos Vasquez  

E-Print Network (OSTI)

Mitigation of Voltage and Current Harmonics in Grid-Connected Microgrids Savaghebi, Mehdi; Guerro-Connected Microgrids. In Proceedings of the 21st IEEE International Symposium on Industrial Electronics (ISIE), 2012;Mitigation of Voltage and Current Harmonics in Grid-Connected Microgrids Mehdi Savaghebi1 , Josep M. Guerrero

Vasquez, Juan Carlos

79

Extreme Environment Silicon Carbide Hybrid Temperature & Pressure Optical Sensors  

SciTech Connect

This final report contains the main results from a 3-year program to further investigate the merits of SiC-based hybrid sensor designs for extreme environment measurements in gas turbines. The study is divided in three parts. Part 1 studies the material properties of SiC such as temporal response, refractive index change with temperature, and material thermal response reversibility. Sensor data from a combustion rig-test using this SiC sensor technology is analyzed and a robust distributed sensor network design is proposed. Part 2 of the study focuses on introducing redundancy in the sensor signal processing to provide improved temperature measurement robustness. In this regard, two distinct measurement methods emerge. A first method uses laser wavelength sensitivity of the SiC refractive index behavior and a second method that engages the Black-Body (BB) radiation of the SiC package. Part 3 of the program investigates a new way to measure pressure via a distance measurement technique that applies to hot objects including corrosive fluids.

Nabeel Riza

2010-09-01T23:59:59.000Z

80

Grid-connected integrated community energy system. Phase II, Stage 2, final report. Preliminary design pyrolysis facility. [Andco-Torrax system  

DOE Green Energy (OSTI)

The University of Minnesota is studying and planning a grid connected integrated community energy system to include disposal of wastes from health centers and utilizing the heat generated. The University of Minnesota has purchased the so called Southeast Generating Station from the Northern States Power Company. This plant contains two coal-fired boilers that will be retrofitted to burn low-sulfur Montana coal. Building modifications and additions will be made to support the components of the Andco-Torrax system and integrate the system with the rest of the plant. The Andco-Torrax system is a new high-temperature refuse-conversion process known technically as slagging pyrolysis. Although the pyrolysis of solid waste is a relatively new innovation, pyrolysis processes have been used for years by industry. This report covers the preliminary design and operation of the system. (MCW)

Not Available

1978-03-22T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Extremism  

Office of Scientific and Technical Information (OSTI)

i i LEFT-WING EXTREMISM: The Current Threat Prepared for U.S. Department of Energy Office of Safeguards and Security Washington, DC Prepared by Karl A. Seger, Ph.D. Center for Human Reliability Studies Oak Ridge Institute for Science and Education Oak Ridge, TN April 2001 ORISE 01-0439 i TABLE OF CONTENTS EXECUTIVE SUMMARY .............................................................................................ii I. LEFTIST EXTREMISM IS ALIVE AND WELL....................................................... 1 TERROR NETWORK U.S.A. ..................................................................................... 1 EXTREMISM ON THE LEFT AND RIGHT .............................................................. 3 THE THREAT.............................................................................................................

82

Extreme Precipitation and Temperature over the U.S. Pacific Northwest: A Comparison between Observations, Reanalysis Data, and Regional Models  

Science Conference Proceedings (OSTI)

Extreme precipitation and temperature indices in reanalysis data and regional climate models are compared to station observations. The regional models represent most indices of extreme temperature well. For extreme precipitation, finer grid ...

Valrie Dulire; Yongxin Zhang; Eric P. Salath Jr.

2011-04-01T23:59:59.000Z

83

Compatibility Study of Protective Relaying in a Grid-Connected Fuel Cell  

DOE Green Energy (OSTI)

A 200-kW fuel cell produced by International Fuel Cells (IFC), a United Technologies Company, began operation at the National Transportation Research Center (NTRC) in early June 2003. The NTRC is a joint Oak Ridge National laboratory (ORNL) and University of Tennessee research facility located in Knoxville, Tennessee. This research activity investigated the protective relaying functions of this fully commercialized fuel cell power plant, which uses ''synthesized'' protective relays. The project's goal is to characterize the compatibility between the fuel cell's interconnection protection system and the local distribution system or electric power system (EPS). ORNL, with assistance from the Electric Power Research Institute-Power Electronics Applications Center (EPRI-PEAC) in Knoxville, Tennessee, monitored and characterized the system compatibility over a period of 6 months. Distribution utility engineers are distrustful of or simply uncomfortable with the protective relaying and hardware provided as part of distributed generation (DG) plants. Part of this mistrust is due to the fact that utilities generally rely on hardware from certain manufacturers whose reliability is well established based on performance over many years or even decades. Another source of concern is the fact that fuel cells and other types of DG do not use conventional relays but, instead, the protective functions of conventional relays are simulated by digital circuits in the distributed generator's grid interface control unit. Furthermore, the testing and validation of internal protection circuits of DG are difficult to accomplish and can be changed by the vendor at any time. This study investigated and documented the safety and protective relaying present in the IFC fuel cell, collected data on the operation of the fuel cell, recorded event data during EPS disturbances, and assessed the compatibility of the synthesized protective circuits and the local distribution system. The project also addressed other important and timely issues. For instance, the study includes an evaluation of the effectiveness of the fuel cell's synthesized relay protection scheme relative to the recently issued IEEE 1547 interconnection standard. Together, these activities should serve to reduce the number of unknowns pertaining to unconventional protective circuits, to the benefit of DG manufacturers, vendors, prospective and current users of DG, and electricity suppliers/distributors. Although more grid-connect fuel cell interruptions were encountered in this study than originally anticipated, and the investigation and findings became quite complex, every effort was made to clearly summarize the interconnection causes and issues throughout the report and especially in the summary found in Sect. 4. ORNL's funding of this study is sponsored equally by (1) the Department of Energy's (DOE's) Office of Distributed Energy Resources and (2) the Distributed Generation Technologies program of the Tennessee Valley Authority (TVA).

Staunton, R.H.

2004-04-15T23:59:59.000Z

84

Avoiding Inhomogeneity in Percentile-Based Indices of Temperature Extremes  

Science Conference Proceedings (OSTI)

Using a Monte Carlo simulation, it is demonstrated that percentile-based temperature indices computed for climate change detection and monitoring may contain artificial discontinuities at the beginning and end of the period that is used for ...

Xuebin Zhang; Gabriele Hegerl; Francis W. Zwiers; Jesse Kenyon

2005-06-01T23:59:59.000Z

85

Extreme Cold Winter Temperatures in Europe under the Influence of North Atlantic Atmospheric Blocking  

Science Conference Proceedings (OSTI)

North Atlantic atmospheric blocking conditions explain part of the winter climate variability in Europe, being associated with anomalous cold winter temperatures. In this study, the generalized extreme value (GEV) distribution is fitted to monthly ...

Jana Sillmann; Mischa Croci-Maspoli; Malaak Kallache; Richard W. Katz

2011-11-01T23:59:59.000Z

86

Changes in the Frequency of Different Categories of Temperature Extremes in India  

Science Conference Proceedings (OSTI)

In the context of climate change and its impact on sectors like agriculture and health, it is important to examine the changes in the characteristics of temperature extremes of different intensities and duration. In this study, an India ...

S. K. Dash; Ashu Mamgain

2011-09-01T23:59:59.000Z

87

Comparison of Monthly Temperature Extremes Simulated by CMIP3 and CMIP5 Models  

Science Conference Proceedings (OSTI)

The extreme monthly-mean temperatures simulated by 28 models in the fifth phase of the Coupled Model Intercomparison Project (CMIP5) are evaluated and compared with those from 24 models in the third phase of the Coupled Model Intercomparison ...

Yao Yao; Yong Luo; Jianbin Huang; Zongci Zhao

2013-10-01T23:59:59.000Z

88

An Analysis of the Potential for Extreme Temperature Change Based on Observations and Model Simulations  

Science Conference Proceedings (OSTI)

The study analyzes observational climate data for JuneAugust 19772004 and simulations of current and future climate scenarios from a nested GCM/regional climate model system to assess the potential for extreme temperature change over the ...

Barry H. Lynn; Richard Healy; Leonard M. Druyan

2007-04-01T23:59:59.000Z

89

Characteristics of Daily and Extreme Temperatures over Canada  

Science Conference Proceedings (OSTI)

Recent studies have shown that, since 1900, mean annual temperature over southern Canada has increased by an average of 0.9C, with the largest warming during winter and early spring. Every season was associated with greater increases in minimum ...

B. R. Bonsal; X. Zhang; L. A. Vincent; W. D. Hogg

2001-05-01T23:59:59.000Z

90

Three-Phase Modular Cascaded H-Bridge Multilevel Inverter with Individual MPPT for Grid-Connected Photovoltaic Systems  

SciTech Connect

A three-phase modular cascaded H-bridge multilevel inverter for a grid-connected photovoltaic (PV) system is presented in this paper. To maximize the solar energy extraction of each PV string, an individual maximum power point tracking (MPPT) control scheme is applied, which allows the independent control of each dc-link voltage. PV mismatches may introduce unbalanced power supplied to the three-phase system. To solve this issue, a control scheme with modulation compensation is proposed. The three-phase modular cascaded multilevel inverter prototype has been built. Each H-bridge is connected to a 185 W solar panel. Simulation and experimental results are presented to validate the proposed ideas.

Xiao, Bailu [ORNL; Hang, Lijun [ORNL; Riley, Cameron [University of Tennessee, Knoxville (UTK); Tolbert, Leon M [ORNL; Ozpineci, Burak [ORNL

2013-01-01T23:59:59.000Z

91

Changes in the Observed Trends in Extreme Temperatures over China around 1990  

Science Conference Proceedings (OSTI)

Based on the daily temperature data from weather stations in China, linear trends of the seasonal mean and extreme temperatures in summer and winter are analyzed and compared for the periods of 196089 and 19902009. The results show prominent ...

Li Qi; Yuqing Wang

2012-08-01T23:59:59.000Z

92

A 24-h forecast of solar irradiance using artificial neural network: Application for performance prediction of a grid-connected PV plant at Trieste, Italy  

Science Conference Proceedings (OSTI)

Forecasting of solar irradiance is in general significant for planning the operations of power plants which convert renewable energies into electricity. In particular, the possibility to predict the solar irradiance (up to 24 h or even more) can became - with reference to the Grid Connected Photovoltaic Plants (GCPV) - fundamental in making power dispatching plans and - with reference to stand alone and hybrid systems - also a useful reference for improving the control algorithms of charge controllers. In this paper, a practical method for solar irradiance forecast using artificial neural network (ANN) is presented. The proposed Multilayer Perceptron MLP-model makes it possible to forecast the solar irradiance on a base of 24 h using the present values of the mean daily solar irradiance and air temperature. An experimental database of solar irradiance and air temperature data (from July 1st 2008 to May 23rd 2009 and from November 23rd 2009 to January 24th 2010) has been used. The database has been collected in Trieste (latitude 45 40'N, longitude 13 46'E), Italy. In order to check the generalization capability of the MLP-forecaster, a K-fold cross-validation was carried out. The results indicate that the proposed model performs well, while the correlation coefficient is in the range 98-99% for sunny days and 94-96% for cloudy days. As an application, the comparison between the forecasted one and the energy produced by the GCPV plant installed on the rooftop of the municipality of Trieste shows the goodness of the proposed model. (author)

Mellit, Adel [Department of Electronics, Faculty of Sciences and Technology, LAMEL, Jijel University, Ouled-aissa, P.O. Box 98, Jijel 18000 (Algeria); Pavan, Alessandro Massi [Department of Materials and Natural Resources, University of Trieste Via A. Valerio, 2 - 34127 Trieste (Italy)

2010-05-15T23:59:59.000Z

93

Sensitivity analysis for optimal sizing of a PV grid connected home G.WARKOZEK S.PLOIX* M.JACOMINO* F.WURTZ  

E-Print Network (OSTI)

integration of PV in the building...etc. · Energy market data. This information includes energy prices (sell of specified energy market (HSEM): I Sensitivity analysis for optimal sizing of a PV grid connected home G.WARKOZEK S.PLOIX* M.JACOMINO* F

Paris-Sud XI, Université de

94

Extreme Chromatography: Faster, Hotter, SmallerChapter 4 High-temperature Liquid Chromatography  

Science Conference Proceedings (OSTI)

Extreme Chromatography: Faster, Hotter, Smaller Chapter 4 High-temperature Liquid Chromatography Methods and Analyses eChapters Methods - Analyses Books A0E60F9889E91C3C140760EF7AE5F026 AOCS Press Downloadable pdf...

95

Grid-connected integrated community energy system. Phase II, Stage 1, final report. Conceptual design: pyrolysis and waste management systems  

DOE Green Energy (OSTI)

The University of Minnesota is studying and planning a grid-connected integrated community energy system to include disposal of wastes from health centers and utilizing the heat generated. Following initial definition of the 7-county metropolitan region for which the solid waste management system is to be planned, information is then necessary about the nature of the waste generated within this region. Estimates of the quantities generated, generation rates, and properties of the waste to be collected and disposed of are required in order to determine the appropriate size and capacity of the system. These estimates are designated and subsequently referred to as ''system input''. Institutional information is also necessary in designing the planned system, to be compatible with existing institutional operations and procedures, or to offer a minimum amount of problems to the participating institution in the region. Initial considerations of health care institutions generating solid waste within the defined region are made on a comprehensive basis without any attempt to select out or include feasible candidate institutions, or institutional categories. As the study progresses, various criteria are used in selecting potential candidate institutional categories and institutions within the 7-county region as offering the most feasible solid waste system input to be successfully developed into a centralized program; however, it is hoped that such a system if developed could be maintained for the entire 7-county region, and remain comprehensive to the entire health care industry. (MCW)

Not Available

1978-03-08T23:59:59.000Z

96

Development of a low-cost integrated 20-kW ac solar tracking sub- array for grid-connected PV power system applications. Phase 1, Annual technical report, 11 July 1995--31 July 1996  

DOE Green Energy (OSTI)

The overall goal of this effort is to reduce the installed cost of utility scale grid connected photovoltaic power systems. The focus of the effort is on ``BOS`` (Balance-Of-System) component manufacturing technology, which essentially involves all PV power system engineering, manufacturing, assembly and construction tasks from the receipt of a PV module to the deliver of grid connected electricity.

Stern, M.; West, R.; Fourer, G.; Whalen, W.; Van Loo, M.; Duran, G. [Utility Power Group, Chatsworth, CA (United States)

1997-06-01T23:59:59.000Z

97

The Impact of Increasing Summer Mean Temperatures on Extreme Maximum and Minimum Temperatures in Phoenix, Arizona  

Science Conference Proceedings (OSTI)

Over the past few decades, heat-island related temperature increases in Phoenix, Arizona have been similar to the temperature increases predicted in a number of greenhouse simulation experiments. In this investigation, we use the Phoenix climate ...

Robert C. Balling Jr.; Jon A. Skindlov; Daniel H. Phillips

1990-12-01T23:59:59.000Z

98

Extreme temperature robust optical sensor designs and fault-tolerant signal processing  

DOE Patents (OSTI)

Silicon Carbide (SiC) probe designs for extreme temperature and pressure sensing uses a single crystal SiC optical chip encased in a sintered SiC material probe. The SiC chip may be protected for high temperature only use or exposed for both temperature and pressure sensing. Hybrid signal processing techniques allow fault-tolerant extreme temperature sensing. Wavelength peak-to-peak (or null-to-null) collective spectrum spread measurement to detect wavelength peak/null shift measurement forms a coarse-fine temperature measurement using broadband spectrum monitoring. The SiC probe frontend acts as a stable emissivity Black-body radiator and monitoring the shift in radiation spectrum enables a pyrometer. This application combines all-SiC pyrometry with thick SiC etalon laser interferometry within a free-spectral range to form a coarse-fine temperature measurement sensor. RF notch filtering techniques improve the sensitivity of the temperature measurement where fine spectral shift or spectrum measurements are needed to deduce temperature.

Riza, Nabeel Agha (Oviedo, FL); Perez, Frank (Tujunga, CA)

2012-01-17T23:59:59.000Z

99

Electron heated target temperature measurements in petawatt laser experiments based on extreme ultraviolet imaging and spectroscopy  

Science Conference Proceedings (OSTI)

Three independent methods (extreme ultraviolet spectroscopy, imaging at 68 and 256 eV) have been used to measure planar target rear surface plasma temperature due to heating by hot electrons. The hot electrons are produced by ultraintense laser-plasma interactions using the 150 J, 0.5 ps Titan laser. Soft x-ray spectroscopy in the 50-400 eV region and imaging at the 68 and 256 eV photon energies give a planar deuterated carbon target rear surface pre-expansion temperature in the 125-150 eV range, with the rear plasma plume averaging a temperature approximately 74 eV.

Ma, T. [Department of Mechanical and Aerospace Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0417 (United States); Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, California 94550 (United States); Beg, F. N. [Department of Mechanical and Aerospace Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0417 (United States); MacPhee, A. G.; Chung, H.-K.; Key, M. H.; Mackinnon, A. J.; Patel, P. K.; Hatchett, S. [Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, California 94550 (United States); Akli, K. U.; Stephens, R. B. [General Atomics, San Diego, California 92186 (United States); Chen, C. D. [Plasma Science Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Freeman, R. R.; Link, A.; Offermann, D. T.; Ovchinnikov, V.; Van Woerkom, L. D. [College of Mathematical and Physical Sciences, The Ohio State University, 425 Stillman Hall, Columbus, Ohio 43210-1123 (United States)

2008-10-15T23:59:59.000Z

100

Grid-Connected Integrated Community Energy System. Phase II: detailed feasibility analysis and preliminary design. Final report, Stage 2  

SciTech Connect

The purpose of this study was to determine the economic and environmental feasibility of a Grid-Connected Integrated Community Energy System (ICES) based on a multifuel (gas, oil, treated solid wastes, and coal) design with which to serve any or all the institutions within the Louisiana Medical Complex in cooperation with the Health Education Authority of Louisiana (HEAL). In this context, a preliminary design is presented which consists of ICES plant description and engineering analyses. This demonstration system is capable of meeting 1982 system demands by providing 10,000 tons of air conditioning and, from a boiler plant with a high-pressure steam capacity of 200,000 lb/h, approximately 125,000 lb/h of 185 psig steam to the HEAL institutions, and at the same time generating up to 7600 kW of electrical power as byproduct energy. The plant will consist of multiple-fuel steam boilers, turbine generator, turbine driven chillers and necessary auxiliaries and ancillary systems. The preliminary design for these systems and for the building to house the central plant systems are presented along with equipment and instrumentation schedules and outline specifications for major components. Costs were updated to reflect revised data. The final preliminary cost estimate includes allowances for contingencies and escalation, as well as cost for the plant site and professional fees. This design is for a facility specifically with coal burning capability, recognizing that it is more capital-intensive than a gas/oil facility. In the opinion of the Louisiana Department of Natural Resources (DNR), the relatively modest allocations made for scrubbing and ash removal involve less than is implied in standard industry (EPRI) cost increments of over 30% for these duties. The preliminary environmental assessment is included. (LCL)

1978-11-01T23:59:59.000Z

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101

Climate Variability and the Frequency of Extreme Temperature Events for Nine Sites across Canada: Implications for Power Usage  

Science Conference Proceedings (OSTI)

To study the impact of incremental climatic warming on summer extreme temperature event frequency, the historical record of daily maximum June, July, and August temperatures was analyzed for nine sites across Canada. It was found that all of ...

Andrew F. Colombo; David Etkin; Bryan W. Karney

1999-08-01T23:59:59.000Z

102

Composite Materials under Extreme Radiation and Temperature Environments of the Next Generation Nuclear Reactors  

Science Conference Proceedings (OSTI)

In the nuclear energy renaissance, driven by fission reactor concepts utilizing very high temperatures and fast neutron spectra, materials with enhanced performance that exceeds are expected to play a central role. With the operating temperatures of the Generation III reactors bringing the classical reactor materials close to their performance limits there is an urgent need to develop and qualify new alloys and composites. Efforts have been focused on the intricate relations and the high demands placed on materials at the anticipated extreme states within the next generation fusion and fission reactors which combine high radiation fluxes, elevated temperatures and aggressive environments. While nuclear reactors have been in operation for several decades, the structural materials associated with the next generation options need to endure much higher temperatures (1200 C), higher neutron doses (tens of displacements per atom, dpa), and extremely corrosive environments, which are beyond the experience on materials accumulated to-date. The most important consideration is the performance and reliability of structural materials for both in-core and out-of-core functions. While there exists a great body of nuclear materials research and operating experience/performance from fission reactors where epithermal and thermal neutrons interact with materials and alter their physio-mechanical properties, a process that is well understood by now, there are no operating or even experimental facilities that will facilitate the extreme conditions of flux and temperature anticipated and thus provide insights into the behaviour of these well understood materials. Materials, however, still need to be developed and their interaction and damage potential or lifetime to be quantified for the next generation nuclear energy. Based on material development advances, composites, and in particular ceramic composites, seem to inherently possess properties suitable for key functions within the operating envelope of both fission and fusion reactors. In advanced fission reactors composite materials are being designed in an effort to extend the life and improve the reliability of fuel rod cladding as well as structural materials. Composites are being considered for use as core internals in the next generation of gas-cooled reactors. Further, next-generation plasma-fusion reactors, such as the International Thermonuclear Experimental Reactor (ITER) will rely on the capabilities of advanced composites to safely withstand extremely high neutron fluxes while providing superior thermal shock resistance.

Simos, N.

2011-05-01T23:59:59.000Z

103

TEMPERATURE AND EXTREME-ULTRAVIOLET INTENSITY IN A CORONAL PROMINENCE CAVITY AND STREAMER  

Science Conference Proceedings (OSTI)

We analyze the temperature and EUV line emission of a coronal cavity and surrounding streamer in terms of a morphological forward model. We use a series of iron line ratios observed with the Hinode Extreme-ultraviolet Imaging Spectrograph (EIS) on 2007 August 9 to constrain temperature as a function of altitude in a morphological forward model of the streamer and cavity. We also compare model predictions to the EIS EUV line intensities and polarized brightness (pB) data from the Mauna Loa Solar Observatory (MLSO) Mark 4 K-coronameter. This work builds on earlier analysis using the same model to determine geometry of and density in the same cavity and streamer. The fit to the data with altitude-dependent temperature profiles indicates that both the streamer and cavity have temperatures in the range 1.4-1.7 MK. However, the cavity exhibits substantial substructure such that the altitude-dependent temperature profile is not sufficient to completely model conditions in the cavity. Coronal prominence cavities are structured by magnetism so clues to this structure are to be found in their plasma properties. These temperature substructures are likely related to structures in the cavity magnetic field. Furthermore, we find that the model overestimates the EUV line intensities by a factor of 4-10, without overestimating pB. We discuss this difference in terms of filling factors and uncertainties in density diagnostics and elemental abundances.

Kucera, T. A. [NASA/GSFC, Code 671, Greenbelt, MD 20771 (United States); Gibson, S. E.; Schmit, D. J. [HAO/NCAR, P.O. Box 3000, Boulder, CO 80307-3000 (United States); Landi, E. [Department of Atmospheric, Oceanic and Space Science, Space Research Building, University of Michigan, 2455 Hayward St., Ann Arbor, MI 48109-2143 (United States); Tripathi, D. [Inter-University Centre for Astronomy and Astrophysics, Post Bag-4, Ganeshkhind, Pune University Campus, Pune 411 007 (India)

2012-09-20T23:59:59.000Z

104

Predicting the Impact of El Niño on Future Temperature Extremes | U.S. DOE  

Office of Science (SC) Website

Predicting the Impact of El Niño on Future Temperature Extremes Predicting the Impact of El Niño on Future Temperature Extremes Biological and Environmental Research (BER) BER Home About Research Facilities Science Highlights Searchable Archive of BER Highlights External link Benefits of BER Funding Opportunities Biological & Environmental Research Advisory Committee (BERAC) News & Resources Contact Information Biological and Environmental Research U.S. Department of Energy SC-23/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3251 F: (301) 903-5051 E: sc.ber@science.doe.gov More Information » October 2012 Predicting the Impact of El Niño on Future Temperature Extremes Accurate prediction of El Niño-Southern Oscillation is crucial for simulating extreme maximum temperature. Print Text Size: A A A

105

ENSO Influence on Intraseasonal Extreme Rainfall and Temperature Frequencies in the Contiguous United States: Implications for Long-Range Predictability  

Science Conference Proceedings (OSTI)

Potential ENSO-related predictability of wintertime daily extreme precipitation and temperature frequencies is investigated. This is done empirically using six decades of daily data at 168 stations distributed over the contiguous United States. ...

Alexander Gershunov

1998-12-01T23:59:59.000Z

106

The Role of Human Activity in the Recent Warming of Extremely Warm Daytime Temperatures  

Science Conference Proceedings (OSTI)

Formal detection and attribution analyses of changes in daily extremes give evidence of a significant human influence on the increasing severity of extremely warm nights and decreasing severity of extremely cold days and nights. This paper ...

Nikolaos Christidis; Peter A. Stott; Simon J. Brown

2011-04-01T23:59:59.000Z

107

Changes in 20th century extreme temperature and precipitation over the western United States based on observations and regional climate model simulations  

Science Conference Proceedings (OSTI)

Trends in extreme temperature and precipitation in two regional climate model simulations forced by two global climate models are compared with observed trends over the western United States. The observed temperature extremes show substantial and ...

Valrie Dulire; Yongxin Zhang; Eric P. Salath Jr.

108

NETL Extreme Drilling Laboratory Studies High Pressure High Temperature Drilling Phenomena  

SciTech Connect

The U.S. Department of Energys National Energy Technology Laboratory (NETL) established an Extreme Drilling Lab to engineer effective and efficient drilling technologies viable at depths greater than 20,000 feet. This paper details the challenges of ultra-deep drilling, documents reports of decreased drilling rates as a result of increasing fluid pressure and temperature, and describes NETLs Research and Development activities. NETL is invested in laboratory-scale physical simulation. Their physical simulator will have capability of circulating drilling fluids at 30,000 psi and 480 F around a single drill cutter. This simulator will not yet be operational by the planned conference dates; therefore, the results will be limited to identification of leading hypotheses of drilling phenomena and NETLs test plans to validate or refute such theories. Of particular interest to the Extreme Drilling Labs studies are the combinatorial effects of drilling fluid pressure, drilling fluid properties, rock properties, pore pressure, and drilling parameters, such as cutter rotational speed, weight on bit, and hydraulics associated with drilling fluid introduction to the rock-cutter interface. A detailed discussion of how each variable is controlled in a laboratory setting will be part of the conference paper and presentation.

Lyons, K.D.; Honeygan, S.; Moroz, T

2007-06-01T23:59:59.000Z

109

NETL Extreme Drilling Laboratory Studies High Pressure High Temperature Drilling Phenomena  

SciTech Connect

The U.S. Department of Energy's National Energy Technology Laboratory (NETL) established the Extreme Drilling Laboratory to engineer effective and efficient drilling technologies viable at depths greater than 20,000 ft. This paper details the challenges of ultradeep drilling, documents reports of decreased drilling rates as a result of increasing fluid pressure and temperature, and describes NETL's research and development activities. NETL is invested in laboratory-scale physical simulation. Its physical simulator will have capability of circulating drilling fluids at 30,000 psi and 480F around a single drill cutter. This simulator is not yet operational; therefore, the results will be limited to the identification of leading hypotheses of drilling phenomena and NETL's test plans to validate or refute such theories. Of particular interest to the Extreme Drilling Laboratory's studies are the combinatorial effects of drilling fluid pressure, drilling fluid properties, rock properties, pore pressure, and drilling parameters, such as cutter rotational speed, weight on bit, and hydraulics associated with drilling fluid introduction to the rock-cutter interface. A detailed discussion of how each variable is controlled in a laboratory setting will be part of the conference paper and presentation.

Lyons, K.D.; Honeygan, S.; Moroz, T.H.

2008-12-01T23:59:59.000Z

110

Are Temperature and Precipitation Extremes Increasing over the U.S. High Plains?  

Science Conference Proceedings (OSTI)

Large-scale environmental, social, and economic impacts of recent weather and climate extremes are raising questions about whether the frequency and intensity of these extremes have been increasing. Here, the authors evaluate trends in climate ...

Di Long; Bridget R. Scanlon; D. Nelun Fernando; Lei Meng; Steven M. Quiring

2012-12-01T23:59:59.000Z

111

Development of a low cost integrated 15 kW A.C. solar tracking sub-array for grid connected PV power system applications  

SciTech Connect

Utility Power Group has achieved a significant reduction in the installed cost of grid-connected PV systems. The two part technical approach focused on (1) The utilization of a large area factory assembled PV panel, and (2) The integration and packaging of all sub-array power conversion and control functions within a single factory produced enclosure. Eight engineering prototype 15kW ac single axis solar tracking sub-arrays were designed, fabricated, and installed at the Sacramento Municipal Utility District{close_quote}s Hedge Substation site in 1996 and are being evaluated for performance and reliability. A number of design enhancements will be implemented in 1997 and demonstrated by the field deployment and operation of over twenty advanced sub-array PV power systems. {copyright} {ital 1997 American Institute of Physics.}

Stern, M.; West, R.; Fourer, G.; Whalen, W.; Van Loo, M.; Duran, G. [Utility Power Group, 9410 G De Soto Avenue, Chatsworth, California 91311 (United States)

1997-02-01T23:59:59.000Z

112

Grid Connected Integrated Community Energy System. Volume 1. Summary and demonstration site description. Final report, Phase I, February 1, 1977-May 31, 1977  

SciTech Connect

The University of Minnesota and its partners - St. Mary's and Fairview hospitals, Augsburg College, Northern States Power Company, and possibly some small add-on customers - will develop the feasibility of a Grid-Connected Integrated Community Energy System utilizing cogeneration of electricity as a byproduct of steam in an educational, residential, hospital, and commercial community. An overview of the site is given. The geographical location, spatial data topographical data, and modes of transportation to and from the site are given. Environmental data (geology, surficial geology, regional watershed, trees, building shadows, climatological data, environmental quality data, and the microclimate) are discussed. The open space, outdoor use, and wildlife habitat are assessed. Information on the building sectors includes sector energy density, night time usage, building construction, steam adsorption air conditioning, electric air conditioning, and University Hospital air conditioning. The building sector energy profiles and the special service sectors are described. (MCW)

Soderberg, W.E.; O' Gara, J.C.; Reid, R.A.; Lewis, R.; Ervasti, M.; Pearce, J.

1977-06-01T23:59:59.000Z

113

Hinode/Extreme-Ultraviolet Imaging Spectrometer Observations of the Temperature Structure of the Quiet Corona  

E-Print Network (OSTI)

We present a Differential Emission Measure (DEM) analysis of the quiet solar corona on disk using data obtained by the Extreme-ultraviolet Imaging Spectrometer (EIS) on Hinode. We show that the expected quiet Sun DEM distribution can be recovered from judiciously selected lines, and that their average intensities can be reproduced to within 30%. We present a subset of these selected lines spanning the temperature range log T = 5.6 to 6.4 K that can be used to derive the DEM distribution reliably, including a subset of Iron lines that can be used to derive the DEM distribution free of the possibility of uncertainties in the elemental abundances. The subset can be used without the need for extensive measurements and the observed intensities can be reproduced to within the estimated uncertainty in the pre-launch calibration of EIS. Furthermore, using this subset, we also demonstrate that the quiet coronal DEM distribution can be recovered on size scales down to the spatial resolution of the instrument (1" pixels...

Brooks, David H; Williams, David R; Watanabe, Tetsuya

2009-01-01T23:59:59.000Z

114

Thin Films for Gas Sensing at Extreme Temperatures and in Harsh ...  

Science Conference Proceedings (OSTI)

Corrosion of Mild Steel in Extreme Oil and Gas Environments Corrosion ... Fluorescent Nanoparticle Tracers for Oil Exploration and Production Formation of...

115

HINODE/EXTREME-ULTRAVIOLET IMAGING SPECTROMETER OBSERVATIONS OF THE TEMPERATURE STRUCTURE OF THE QUIET CORONA  

Science Conference Proceedings (OSTI)

We present a differential emission measure (DEM) analysis of the quiet solar corona on disk using data obtained by the Extreme-ultraviolet Imaging Spectrometer (EIS) on Hinode. We show that the expected quiet-Sun DEM distribution can be recovered from judiciously selected lines, and that their average intensities can be reproduced to within 30%. We present a subset of these selected lines spanning the temperature range log T = 5.6-6.4 K that can be used to derive the DEM distribution reliably, including a subset of iron lines that can be used to derive the DEM distribution free of the possibility of uncertainties in the elemental abundances. The subset can be used without the need for extensive measurements, and the observed intensities can be reproduced to within the estimated uncertainty in the pre-launch calibration of EIS. Furthermore, using this subset, we also demonstrate that the quiet coronal DEM distribution can be recovered on size scales down to the spatial resolution of the instrument (1'' pixels). The subset will therefore be useful for studies of small-scale spatial inhomogeneities in the coronal temperature structure, for example, in addition to studies requiring multiple DEM derivations in space or time. We apply the subset to 45 quiet-Sun data sets taken in the period 2007 January to April, and show that although the absolute magnitude of the coronal DEM may scale with the amount of released energy, the shape of the distribution is very similar up to at least log T approx 6.2 K in all cases. This result is consistent with the view that the shape of the quiet-Sun DEM is mainly a function of the radiating and conducting properties of the plasma and is fairly insensitive to the location and rate of energy deposition. This universal DEM may be sensitive to other factors such as loop geometry, flows, and the heating mechanism, but if so they cannot vary significantly from quiet-Sun region to region.

Brooks, David H.; Warren, Harry P. [Space Science Division, Code 7673, Naval Research Laboratory, Washington, DC 20375 (United States); Williams, David R. [Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT (United Kingdom); Watanabe, Tetsuya, E-mail: dhbrooks@ssd5.nrl.navy.mi [National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588 (Japan)

2009-11-10T23:59:59.000Z

116

Influence of South Atlantic Sea Surface Temperatures on Rainfall Variability and Extremes over Southern Africa  

Science Conference Proceedings (OSTI)

It is generally agreed that changing climate variability, and the associated change in climate extremes, may have a greater impact on environmentally vulnerable regions than a changing mean. This research investigates rainfall variability, ...

C. J. R. Williams; D. R. Kniveton; R. Layberry

2008-12-01T23:59:59.000Z

117

Panel: Microgrid Research and Field Testing IEEE PES General Meeting, 24-28 June 2007, Tampa, FL 1 In general, a microgrid can operate in both the grid-connected  

E-Print Network (OSTI)

Panel: Microgrid Research and Field Testing IEEE PES General Meeting, 24-28 June 2007, Tampa, FL 1 Abstract In general, a microgrid can operate in both the grid-connected mode and the islanded mode where the microgrid is interfaced to the main power system by a fast semiconductor switch called static switch, (SS

118

Assessment of Reanalysis Daily Extreme Temperatures with Chinas Homogenized Historical Dataset during 19792001 Using Probability Density Functions  

Science Conference Proceedings (OSTI)

Using a recently homogenized observational daily maximum (TMAX) and minimum temperature (TMIN) dataset for China, the extreme temperatures from the 40-yr ECMWF Re-Analysis (ERA-40), the Japanese 25-year Reanalysis (JRA-25), the NCEP/Department of ...

Jiafu Mao; Xiaoying Shi; Lijuan Ma; Dale P. Kaiser; Qingxiang Li; Peter E. Thornton

2010-12-01T23:59:59.000Z

119

Grid connected integrated community energy system. Phase II: final state 2 report. Preliminary design waste management and institutional analysis  

SciTech Connect

The Preliminary Design of a Regional, Centralized Solid Waste Management System for the Twin Cities Metropolitan Region in Minnesota is presented. The concept has been developed for the sound environmental and safe disposal of solid waste generated from its health care industry, although some additional waste supplements are included as economic assistance in order to approach a competitive alternative to current health care solid waste disposal costs. The system design focuses on a 132 tons per day high-temperature, slagging pyrolysis system manufactured by Andco Incorporated, Andco-Torrax Division Design criteria are given. A Collection and Transportation System (CTS) has been planned for the movements of solid waste (General and Special) from the generating HHC facilities within a 10-mile waste-shed zone, for municipal solid waste from a local transfer station currently processing municipal solid waste, and for pyrolysis residue to final disposal. Each of these facilities is now considered as service contract operations. Approximately 15 vehicle trips per day are estimated as vehicle traffic delivering the refuse to the pyrolysis facility. Cost estimates for the CTS have been determined in conjunction with current municipal refuse haulers in the TCMR, and valued at the following: HHC General Solid Waste (HHC/GSW) at 6.00 $/T; HHC Special Solid Waste (HHC/SSW) at 20.00 $/T; Municipal Transfer at 4.00 to be paid the pyrolysis system as a drop charge. Special box-bag containers are to be required in handling the HHC/SSW at a cost of 30.19 $/T estimate. The total operating cost for the pyrolysis system has been estimated to be 13.73 $/T, with a steam credit of 11.70 $/T, to yield a net cost of 2.03 $/T. Capital cost has been estimated to be 7,700,800 dollars, 1978. A back-up facility capital investment of $163,000 dollars, 1978 has been estimated, which should be applied to the existing University of Minnesota incinerator.

1978-03-22T23:59:59.000Z

120

Linking high and low temperature plasticity in bulk metallic glasses: thermal activation, extreme value statistics and kinetic freezing  

E-Print Network (OSTI)

At temperatures well below their glass transition, the deformation properties of bulk metallic glasses are characterised by a sharp transition from elasticity to plasticity, a reproducible yield stress, and an approximately linear decrease of this stress with increasing temperature. In the present work it shown that when the well known properties of the under-cooled liquid regime, in terms of the underlying potential energy landscape, are assumed to be also valid at low temperature, a simple thermal activation model is able to reproduce the observed onset of macro-scopic yield. At these temperatures, the thermal accessibility of the complex potential energy landscape is drastically reduced, and the statistics of extreme value and the phenomenon of kinetic freezing become important, affecting the spatial heterogeneity of the irreversible structural transitions mediating the elastic-to-plastic transition. As the temperature increases and approaches the glass transition temperature, the theory is able to smoothly transit to the high temperature deformation regime where plasticity is known to be well described by thermally activated viscoplastic models.

P. M. Derlet; R. Maa

2013-02-19T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

On the relationship of soil moisture and extreme temperatures in East China  

Science Conference Proceedings (OSTI)

Soil moisture conditions affect energy partitioning between sensible and latent heat fluxes, resulting in a change in surface temperatures. In this study, relationship between antecedent soil moisture conditions (as indicated by the 6-month ...

Lei Meng; Yanjun Shen

122

On the Extreme Variability and Change of Cold-Season Temperatures in Northwest Canada  

Science Conference Proceedings (OSTI)

The Mackenzie River basin (MRB) in northwestern Canada is a climatologically important region that exerts significant influences on the weather and climate of North America. The region exhibits the largest cold-season temperature variability in ...

Kit K. Szeto

2008-01-01T23:59:59.000Z

123

X-ray scattering intensities of water at extreme pressure and temperature  

DOE Green Energy (OSTI)

We have calculated the coherent x-ray scattering intensity of several phases of water at 1500 and 2000 K under high pressure, using ab initio Density Functional Theory (DFT). Our calculations span the molecular liquid, ice VII, and superionic solid phases, including the recently predicted symmetrically hydrogen bonded region of the superionic phase. We show that wide angle x-ray scattering intensity could be used to determine phase boundaries between these high pressure phases, and we compare the results for ice VII and superionic water. We compute simulated spectra and provide new atomic scattering form factors for water at extreme conditions, which take into account frequently neglected changes in ionic charge and electron delocalization. We show that our modifed atomic form factors allow for a nearly exact comaprison to the total x-ray scattering intensities calculated from DFT. Finally, we analyze the effect our new form factors have on determination of the oxygen-oxygen radial distribution function.

Goldman, N; Fried, L E

2007-01-03T23:59:59.000Z

124

Measurements of electron and proton heating temperatures from extreme-ultraviolet light images at 68 eV in petawatt laser experiments  

Science Conference Proceedings (OSTI)

A 68 eV extreme-ultraviolet light imaging diagnostic measures short pulse isochoric heating by electrons and protons in petawatt laser experiments. Temperatures are deduced from the absolute intensities and comparison with modeling using a radiation hydrodynamics code.

Gu Peimin; Zhang, B.; Key, M. H.; Hatchett, S. P.; Barbee, T.; Freeman, R. R.; Akli, K.; Hey, D.; King, J. A.; Mackinnon, A. J.; Snavely, R. A.; Stephens, R. B. [College of Mathematical and Physical Sciences, Ohio State University, 425 Stillman Hall, Columbus, Ohio 43210-1123 (United States); Department of Applied Science, University of California-Davis, Davis, California 95616 (United States); Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550 (United States); College of Mathematical and Physical Sciences, Ohio State University, 425 Stillman Hall, Columbus, Ohio 43210-1123 (United States); Department of Applied Science, University of California-Davis, Davis, California 95616 (United States); University of California-San Diego, La Jolla, California 92093 (United States); Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550 (United States); General Atomics, San Diego, California 92186 (United States)

2006-11-15T23:59:59.000Z

125

Ultra low friction carbon/carbon composites for extreme temperature applications  

DOE Patents (OSTI)

A carbon/carbon composite in which a carbon matrix containing a controlled amount of boron or a boron compound is reinforced with carbon fiber exhibits a low coefficient of friction, i.e., on the order of 0.04 to 0.1 at temperatures up to 600.degree. C., which is one of the lowest frictional coefficients for any type of carbonaceous material, including graphite, glassy carbon, diamond, diamond-like carbon and other forms of carbon material. The high degree of slipperiness of the carbon composite renders it particularly adapted for limiting friction and wear at elevated temperatures such as in seals, bearings, shafts, and flexible joints

Erdemir, Ali (Naperville, IL); Busch, Donald E. (Hinsdale, IL); Fenske, George R. (Downers Grove, IL); Lee, Sam (Gardena, CA); Shepherd, Gary (Los Alamitos, CA); Pruett, Gary J. (Cypress, CA)

2001-01-01T23:59:59.000Z

126

Formation Mechanisms of the Extreme High Surface Air Temperature of 40.9C Observed in the Tokyo Metropolitan Area: Considerations of Dynamic Foehn and Foehnlike Wind  

Science Conference Proceedings (OSTI)

A record-breaking high surface air temperature in Japan of 40.9C was observed on 16 August 2007 in Kumagaya, located 60 km northwest of central Tokyo. In this study, the formation mechanisms of this extreme high temperature event are ...

Yuya Takane; Hiroyuki Kusaka

2011-09-01T23:59:59.000Z

127

Weather Extremes  

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

Extremes Extremes Nature Bulletin No. 45 December 15, 1945 Forest Preserve District of Cook County Clayton F. Smith, President Roberts Mann, Superintendent of Conservation WEATHER EXTREMES Chicago lies in a temperate zone. We are fortunate. The lowest temperature recorded here since the establishment of the Weather Bureau in 1870 was -- 23 F on Dec. 24, 1872. The lowest records elsewhere in the United States are--66 F at Riverside Ranger Station, Yellowstone Park, Wyoming, on Feb. 9, 1933; and -- 78 F at Fort Yukon, Alaska, on Jan. 14, 1934. The lowest record anywhere on earth is 90 F at Verkhoyansk, Siberia, Feb. 5 and 7, 1892. The greatest snowfall recorded in Chicago in one 24-hour period was 14.9 inches on Jan. 30, 1939; but 19.2 inches fell between 1:10 a.m. on March 24 and 8:33 p.m. on March 26, 1930.

128

Contribution of Land Use Changes to Near-Surface Air Temperatures during Recent Summer Extreme Heat Events in the Phoenix Metropolitan Area  

Science Conference Proceedings (OSTI)

The impact of 19732005 land useland cover (LULC) changes on near-surface air temperatures during four recent summer extreme heat events (EHEs) are investigated for the arid Phoenix, Arizona, metropolitan area using the Weather Research and ...

Susanne Grossman-Clarke; Joseph A. Zehnder; Thomas Loridan; C. Sue B. Grimmond

2010-08-01T23:59:59.000Z

129

Trends in Total and Extreme South American Rainfall in 19602000 and Links with Sea Surface Temperature  

Science Conference Proceedings (OSTI)

A weeklong workshop in Brazil in August 2004 provided the opportunity for 28 scientists from southern South America to examine daily rainfall observations to determine changes in both total and extreme rainfall. Twelve annual indices of daily ...

M. R. Haylock; T. C. Peterson; L. M. Alves; T. Ambrizzi; Y. M. T. Anunciao; J. Baez; V. R. Barros; M. A. Berlato; M. Bidegain; G. Coronel; V. Corradi; V. J. Garcia; A. M. Grimm; D. Karoly; J. A. Marengo; M. B. Marino; D. F. Moncunill; D. Nechet; J. Quintana; E. Rebello; M. Rusticucci; J. L. Santos; I. Trebejo; L. A. Vincent

2006-04-01T23:59:59.000Z

130

Determination of electron-heated temperatures of petawatt laser-irradiated foil targets with 256 and 68 eV extreme ultraviolet imaging  

Science Conference Proceedings (OSTI)

Measurements of plasma temperature at the rear surface of foil targets due to heating by hot electrons, which were produced in short pulse high intensity laser matter interactions using the 150 J, 0.5 ps Titan laser, are reported. Extreme ultraviolet (XUV) imaging at 256 and 68 eV energies is used to determine spatially resolved target rear surface temperature patterns by comparing absolute intensities to radiation hydrodynamic modeling. XUV mirrors at these two energies were absolutely calibrated at the Advanced Light Source at the Lawrence Berkeley Laboratory. Temperatures deduced from both imagers are validated against each other within the range of 75-225 eV.

Ma, T. [University of California-San Diego, La Jolla, California 92093 (United States); Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); MacPhee, A. G.; Key, M. H.; Hatchett, S. P.; Barbee, T. W.; Mackinnon, A. J.; Patel, P. K. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Akli, K. U.; Stephens, R. B. [General Atomics, San Diego, California 92186 (United States); Chen, C. D. [Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Freeman, R. R.; Link, A.; Offermann, D. T.; Ovchinnikov, V.; Van Woerkom, L. D. [Ohio State University, Columbus, Ohio (United States); King, J. A.; Beg, F. N. [University of California-San Diego, La Jolla, California 92093 (United States); Zhang, B. [University of California-Davis, Davis, California 95616 (United States)

2008-09-15T23:59:59.000Z

131

Addressing the Impact of Temperature Extremes on Large Format Li-Ion Batteries for Vehicle Applications (Presentation)  

SciTech Connect

This presentation discusses the effects of temperature on large format lithium-ion batteries in electric drive vehicles.

Pesaran, A.; Santhanagopalan, S.; Kim, G. H.

2013-05-01T23:59:59.000Z

132

World Meteorological Organization Assessment of the Purported World Record 58C Temperature Extreme at El Azizia, Libya (13 September 1922)  

Science Conference Proceedings (OSTI)

On 13 September 1922, a temperature of 58C (136.4F) was purportedly recorded at El Azizia (approximately 40 km south-southwest of Tripoli) in what is now modern-day Libya. That temperature record of 58C has been cited by numerous world-record sources ...

Khalid I. El Fadli; Randall S. Cerveny; Christopher C. Burt; Philip Eden; David Parker; Manola Brunet; Thomas C. Peterson; Gianpaolo Mordacchini; Vinicio Pelino; Pierre Bessemoulin; Jos Luis Stella; Fatima Driouech; M. M Abdel Wahab; Matthew B. Pace

2013-02-01T23:59:59.000Z

133

Synthesis of super-dense phase of aluminum under extreme pressure and temperature conditions created by femtosecond laser pulses in sapphire  

SciTech Connect

We describe synthesis of a new super-dense phase of aluminum under extreme pressure and temperature conditions created by laser-induced microexplosions in sapphire. Micro explosions in sub-micrometer sized regions of sapphire were induced by tightly-focused femtosecond laser pulses with a temporal length of {approx} 100 fs and an energy of {approx} 100 nJ. Fast, explosive expansion of photogenerated high-density plasma created strong heating and pressure transients with peak temperature and pressure of {approx} 105 K and 10 TPa, respectively. Partial decomposition of sapphire in the shock-compressed sapphire led to formation of nanocrystalline bcc-Al phase, which is different from ambient fcc-Al phase, and was permanently preserved by fast quenching. The existence of super-dense bcc-Al phase was confirmed using X-ray diffraction technique. This is the first observation of bcc-Al phase, which so far has been only predicted theoretically, and a demonstration that laser-induced micro explosions technique enables simple, safe and cost-efficient access to extreme pressures and temperatures without the tediousness typical to traditional techniques that use diamond anvil cells, gas guns, explosives, or megajoule-class lasers.

Mizeikis, Vygantas; Vailionis, Arturas; Gamaly, Eugene G.; Yang, Wenge; Rode, Andrei V.; Juodkazis, Saulius (Swinburne); (Shizuoka); (Stanford); (CIW); (ANU)

2012-06-26T23:59:59.000Z

134

Dependence of Extreme Daily Maximum Temperatures on Antecedent Soil Moisture in the Contiguous United States during Summer  

Science Conference Proceedings (OSTI)

The paper presents an analysis of the dependence of summertime daily maximum temperature on antecedent soil moisture using daily surface observations from a selection of stations in the contiguous United States and daily time series of soil ...

Imke Durre; John M. Wallace; Dennis P. Lettenmaier

2000-07-01T23:59:59.000Z

135

Electron-Heated Target Temperature Measurements in Petawatt Laser Experiments Based on Extreme Ultraviolet Imaging and Spectroscopy  

Science Conference Proceedings (OSTI)

Three independent methods (XUV spectroscopy, imaging at 68 eV and 256 eV) have been used to measure planar target rear surface plasma temperature due to heating by hot electrons. The hot electrons are produced by ultra-intense laser plasma interactions using the 150 J, 0.5 ps Titan laser. Soft x-ray spectroscopy in the 50-400 eV region and imaging at the 68 eV and 256 eV photon energies were used to determine the rear surface temperature of planar CD targets. Temperatures were found to be in the 60-150 eV range, with good agreement between the three diagnostics.

Ma, T; Beg, F; Macphee, A; Chung, H; Key, M; Mackinnon, A; Patel, P; Hatchett, S; Akli, K; Stephens, R; Chen, C; Freeman, R; Link, A; Offermann, D; Ovchinnikov, V; VanWoerkom, L; Zhang, B

2008-05-02T23:59:59.000Z

136

Nanocrystalline and Nanotwinned Metals under Extreme Environment  

Science Conference Proceedings (OSTI)

The applicability of nanostructured metals under extreme environment (high temperature, ... of Transport Phenomena for Enhanced Oil Recovery Applications .

137

Extreme MPG  

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

Extreme MPG Extreme MPG World Record Fuel Efficiency Link to video of Pac Car Link to Pac Car Animation Pac II vehicle and team The PAC-Car II set a new world record in fuel efficient driving during the Shell Eco-marathon in Ladoux (France) on June 26, 2005. Running on hydrogen, the PAC-Car II achieved a fuel economy of 12,665 miles per gallon gasoline equivalent (MPGe)! Most Efficient EPA-Certified Vehicles* Current Model Year 2013 Chevrolet Volt 2014 Chevrolet Volt City 63 Hwy 61 Comb 62 Fuel Type: Gas/Electricity Gasoline - All Years 2000 Honda Insight 2000 Honda Insight City 49 Hwy 61 Comb 53 Fuel Type: Gasoline All Fuels - All Years 2013 Scion iQ EV 2013 Scion iQ EV City 138 Hwy 105 Comb 121 Fuel Type: Electricity *Based on Combined MPG rating. Current Model Year excludes pure EVs.

138

Long-Term Trends in Air Temperature Distribution and Extremes, Growing Degree?Days, and Spring and Fall Frosts for Climate Impact Assessments on Agricultural Practices in Nebraska  

Science Conference Proceedings (OSTI)

Air temperature influences agricultural practices and production outcomes, making detailed quantifications of temperature changes necessary for potential positive and negative effects on agricultural management practices to be exploited or ...

Kari E. Skaggs; Suat Irmak

2012-11-01T23:59:59.000Z

139

Mineralogy under extreme conditions  

Science Conference Proceedings (OSTI)

We have performed measurements of minerals based on the synchrotron source for single crystal and powder X-ray diffraction, inelastic scattering, spectroscopy and radiography by using diamond anvil cells. We investigated the properties of iron (Fe), iron-magnesium oxides (Fe, Mg)O, silica(SiO{sub 2}), iron-magnesium silicates (Fe, Mg)SiO{sub 3} under simulated high pressure-high temperature extreme conditions of the Earth's crust, upper mantle, low mantle, core-mantle boundary, outer core, and inner core. The results provide a new window on the investigation of the mineral properties at Earth's conditions.

Shu, Jinfu (CIW)

2012-02-07T23:59:59.000Z

140

Extreme Value Techniques  

Science Conference Proceedings (OSTI)

... "Recent approaches to extreme value estimation with application to wind speeds. Part II: prediction of extreme winds." Proceedings of the First ...

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Short-Term Climate Extremes: Prediction Skill and Predictability  

Science Conference Proceedings (OSTI)

Forecasts for extremes in short-term climate (monthly means) are examined to understand the current prediction capability and potential predictability. This study focuses on 2-m surface temperature and precipitation extremes over North and South ...

Emily J. Becker; Huug van den Dool; Malaquias Pea

2013-01-01T23:59:59.000Z

142

Estimation of electron temperature and density of the decay plasma in a laser-assisted discharge plasma extreme ultraviolet source by using a modified Stark broadening method  

Science Conference Proceedings (OSTI)

In order to investigate the plasma expansion behaviors and the electrical recovery process after the maximum implosion in our tin fueled laser-assisted discharge plasma (LDP) 13.5 nm EUV source, we developed and evaluated a cost-efficient spectroscopic method to determine the electron temperature T{sub e} and density n{sub e} simultaneously, by using Stark broadenings of two Sn II isolated lines (5s{sup 2}4f{sup 2}F{sup o}{sub 5/2} - 5s{sup 2}5d{sup 2}D{sub 3/2} 558.9 nm and 5s{sup 2}6d{sup 2}D{sub 5/2} - 5s{sup 2}6p{sup 2}P{sup o}{sub 3/2} 556.2 nm) spontaneously emitted from the plasma. The spatial-resolved evolutions of T{sub e} and n{sub e} of the expansion plasma over 50 to 900 ns after the maximum implosion were obtained using this modified Stark broadening method. According to the different n{sub e} decay characteristics along the Z-pinch axis, the expansion velocity of the electrons was estimated as {approx}1.2 x 10{sup 4} ms{sup -1} from the plasma shell between the electrodes towards the cathode and the anode. The decay time constant of n{sub e} was measured as 183 {+-} 24 ns. Based on the theories of plasma adiabatic expansion and electron-impact ionization, the minimum time-span that electrical recovery between the electrodes needs in order to guarantee the next succeeding regular EUV-emitting discharge was estimated to be 70.5 {mu}s. Therefore, the maximum repetition rate of our LDP EUV source is {approx}14 kHz, which enables the output to reach 125 W/(2{pi}sr).

Zhu Qiushi; Muto, Takahiro; Yamada, Junzaburo; Kishi, Nozomu; Watanabe, Masato; Okino, Akitoshi; Horioka, Kazuhiko; Hotta, Eiki [Department of Energy Sciences, Tokyo Institute of Technology, Yokohama (Japan)

2011-12-15T23:59:59.000Z

143

Extreme Scale Visual Analytics  

Science Conference Proceedings (OSTI)

Extreme-scale visual analytics (VA) is about applying VA to extreme-scale data. The articles in this special issue examine advances related to extreme-scale VA problems, their analytical and computational challenges, and their real-world applications.

Wong, Pak C.; Shen, Han-Wei; Pascucci, Valerio

2012-05-08T23:59:59.000Z

144

Prospects for grid-connected solar PV in Kenya  

E-Print Network (OSTI)

Kenya's electric power system is heavily reliant on hydropower, leaving it vulnerable during recurring droughts. Supply shortfalls are currently met through the use of expensive leased diesel generation. Therefore, plans ...

Rose, Amy Michelle

2013-01-01T23:59:59.000Z

145

On-Road Results from Charging Infrastructure and Grid Connected...  

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

and reduce the nation's dependence on foreign oil * Multi-program DOE laboratory * * Nuclear Energy Nuclear Energy * Fossil, Biomass, Wind, Geothermal and Hydropower Energy *...

146

ARRA Grid-Connected Vehicles Transportation Electrification Demonstrat...  

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

Projects, and INL Data Collection Projects, and INL Data Collection Support Clean Cities 2010 Coordinator Leadership Retreat - Rapid City, S.D. Leadership Retreat Rapid...

147

Grid Connected Wind Power in China: Renewable Energy in China  

DOE Green Energy (OSTI)

Fact sheet describes China's use of wind energy, policy and market development programs, financing, research and development, and information resources.

Not Available

2004-04-01T23:59:59.000Z

148

Storage Size Determination for Grid-Connected Photovoltaic Systems  

E-Print Network (OSTI)

and upper bounds on Cc ref, and introduce an efficient algorithm for calculating its value; these results greenhouse gas emissions due to fossil fuels and the liberalization of the electricity market have led in zero-energy buildings and residential homes, or iv) power arbitrage under time-of-use electricity

Martínez, Sonia

149

Grid-Connected Renewables Program (New Jersey) | Open Energy...  

Open Energy Info (EERE)

Sector Commercial, Industrial, Institutional, Local Government, Nonprofit, Schools, State Government Eligible Technologies Anaerobic Digestion, Biomass, Landfill Gas, Wind,...

150

Microsoft PowerPoint - LIPA Considerations for Grid Connection...  

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

of the f d t l f fundamental frequency. 1 Interconnection Complications Experienced Inverter manufacturers could not guarantee SGF could disconnect from the LIPA system within...

151

Controlling of grid connected photovoltaic lighting system with fuzzy logic  

SciTech Connect

In this study, DC electrical energy produced by photovoltaic panels is converted to AC electrical energy and an indoor area is illuminated using this energy. System is controlled by fuzzy logic algorithm controller designed with 16 rules. Energy is supplied from accumulator which is charged by photovoltaic panels if its energy would be sufficient otherwise it is supplied from grid. During the 1-week usage period at the semester time, 1.968 kWh energy is used from grid but designed system used 0.542 kWh energy from photovoltaic panels at the experiments. Energy saving is determined by calculations and measurements for one education year period (9 months) 70.848 kWh. (author)

Saglam, Safak; Ekren, Nazmi; Erdal, Hasan [Technical Education Faculty, Marmara University, Istanbul 34722 (Turkey)

2010-02-15T23:59:59.000Z

152

First Commercial, Grid-Connected, Hydrokinetic Tidal Energy Project...  

Office of Science (SC) Website

Image courtesy of Ocean Renewable Power Company ORPC's TidGen(tm) turbine generator unit. R&D Opportunity Advanced water power technologies include devices capable of extracting...

153

EERE News: Maine Project Launches First Grid-Connected Offshore...  

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

to be deployed in the world-strengthening American leadership in innovative clean energy technologies that diversify the nation's energy mix with more clean, domestic energy...

154

Transatlantic Workshop on Electric Vehicles and Grid Connectivity...  

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

Union, under the auspices of the U.S.-EU Energy Council, invited equipment suppliers and manufacturers, utilities, policymakers, standards organizations, and government agencies...

155

Advanced Instrumentation for Extreme Environments  

Science Conference Proceedings (OSTI)

The Department of Energy (DOE) Office of Nuclear Energy (NE) is pursuing embedded instrumentation and controls (I&C) technology for next generation nuclear power generation applications. Embedded systems encompass a wide range of configurations and technologies; we define embedding in this instance as the integration of the sensors and the control system design into the component design using a systems engineering process. Embedded I&C systems are often an essential part of developing new capabilities, improving reliability, enhancing performance, and reducing operational costs. The new intrinsically safe, more efficient, and cost effective reactor technologies (Next Generation Nuclear Plant and Small Modular Reactors) require the development and application of new I&C technologies. These new designs raise extreme environmental challenges such as high temperatures (over 700 C) and material compatibility (e.g., molten salts). The desired reliability and functionality requires measurements in these extreme conditions including high radiation environments which were not previously monitored in real time. The DOE/NE Nuclear Energy Enabling Technologies (NEET) program currently has several projects investigating I&C technologies necessary to make these reactor designs realizable. The project described in this paper has the specific goal of investigating embedded I&C with the following objectives: 1.Explore and quantify the potential gains from embedded I&C improved reliability, increased performance, and reduced cost 2.Identify practical control, sensing, and measurement techniques for the extreme environments found in high-temperature reactors 3.Design and fabricate a functional prototype high-temperature cooling pump for molten salts represents target demonstration of improved performance, reliability, and widespread usage There are many engineering challenges in the design of a high-temperature liquid salt cooling pump. The pump and motor are in direct contact with molten fluoride salt at 700 C (1,292 F) as part of a reactor cooling loop. The motor-pump combination during normal operation would be red-hot (Figure 1). This environment challenges every facet of the design including seals, wiring, magnetic materials, and sensors. In this paper, we discuss the challenges of sensor design in extreme environments and specifically the sensor design for a high-temperature fluoride salt coolant pump. This pump will be used as a test-bed for embedded I&C development and validation in extreme environments.

Melin, Alexander M [ORNL; Kisner, Roger [ORNL; Fugate, David L [ORNL

2013-01-01T23:59:59.000Z

156

Climate, extreme heat, and electricity demand in California  

E-Print Network (OSTI)

warming and electricity demand: A study of California.Extreme Heat, and Electricity Demand in California Norman L.high temperature and electricity demand for air-conditioned

Miller, N.L.

2008-01-01T23:59:59.000Z

157

Attributing Changes in the Risk of Extreme Weather and Climate...  

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

many locations around the planet, including the tropics to support analyses of changes in tropical cyclone statistics, as well as extremes of temperature and precipitation. We aim...

158

Extreme Computing | Argonne National Laboratory  

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

Extreme Computing Extreme Computing Petascale computing and the emerging era of exascale computing pose numerous challenges, both from the underlying hardware architectures and the...

159

Climate, Extreme Heat, and Electricity Demand in California  

Science Conference Proceedings (OSTI)

Over the twenty-first century, the frequency of extreme-heat events for major cities in heavily air conditioned California is projected to increase rapidly. Extreme heat is defined here as the temperature threshold for the 90th-percentile ...

Norman L. Miller; Katharine Hayhoe; Jiming Jin; Maximilian Auffhammer

2008-06-01T23:59:59.000Z

160

Generating multivariate extreme value distributions  

E-Print Network (OSTI)

We define in a probabilistic way a parametric family of multivariate extreme value distributions. We derive its copula, which is a mixture of several complete dependent copulas and total independent copulas, and the bivariate tail dependence and extremal coefficients. Based on the obtained results for these coefficients, we propose a method to built multivariate extreme value distributions with prescribed tail/extremal coefficients. We illustrate the results with examples of simulation of these distributions.

Ferreira, Helena

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Extreme Ultraviolet Lithography (EUVL) Portfolio  

Abstract Fees; Passivating Overcoat Bilayer for Multilayer Reflective Coatings for Extreme Ultraviolet (EUV) Lithography. 5,958,605. A passivating overcoat bilayer is ...

162

CFT Duals for Extreme Black Holes  

E-Print Network (OSTI)

It is argued that the general four-dimensional extremal Kerr-Newman-AdS-dS black hole is holographically dual to a (chiral half of a) two-dimensional CFT, generalizing an argument given recently for the special case of extremal Kerr. Specifically, the asymptotic symmetries of the near-horizon region of the general extremal black hole are shown to be generated by a Virasoro algebra. Semiclassical formulae are derived for the central charge and temperature of the dual CFT as functions of the cosmological constant, Newton's constant and the black hole charges and spin. We then show, assuming the Cardy formula, that the microscopic entropy of the dual CFT precisely reproduces the macroscopic Bekenstein-Hawking area law. This CFT description becomes singular in the extreme Reissner-Nordstrom limit where the black hole has no spin. At this point a second dual CFT description is proposed in which the global part of the U(1) gauge symmetry is promoted to a Virasoro algebra. This second description is also found to re...

Hartman, Thomas; Nishioka, Tatsuma; Strominger, Andrew

2009-01-01T23:59:59.000Z

163

CFT Duals for Extreme Black Holes  

E-Print Network (OSTI)

It is argued that the general four-dimensional extremal Kerr-Newman-AdS-dS black hole is holographically dual to a (chiral half of a) two-dimensional CFT, generalizing an argument given recently for the special case of extremal Kerr. Specifically, the asymptotic symmetries of the near-horizon region of the general extremal black hole are shown to be generated by a Virasoro algebra. Semiclassical formulae are derived for the central charge and temperature of the dual CFT as functions of the cosmological constant, Newton's constant and the black hole charges and spin. We then show, assuming the Cardy formula, that the microscopic entropy of the dual CFT precisely reproduces the macroscopic Bekenstein-Hawking area law. This CFT description becomes singular in the extreme Reissner-Nordstrom limit where the black hole has no spin. At this point a second dual CFT description is proposed in which the global part of the U(1) gauge symmetry is promoted to a Virasoro algebra. This second description is also found to reproduce the area law. Various further generalizations including higher dimensions are discussed.

Thomas Hartman; Keiju Murata; Tatsuma Nishioka; Andrew Strominger

2008-11-26T23:59:59.000Z

164

Extreme Winds and Wind Effects on Structures  

Science Conference Proceedings (OSTI)

Extreme Winds and Wind Effects on Structures. The Engineering ... section. I. Extreme Winds: ... II. Wind Effects on Buildings. Database ...

2013-01-17T23:59:59.000Z

165

Global Warming and Extreme Weather  

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

Global Warming and Extreme Weather Global Warming and Extreme Weather Speaker(s): Michael Wehner Date: November 28, 2006 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Surabi Menon Extreme weather events can have serious impacts on human and ecological systems. Changes in the magnitude and frequency of extreme weather associated with changes in the mean climate are likely the most serious consequence of human induced global warming. Understanding what the future portends is vital if society hopes to adapt to the very different world that awaits. In this talk, we will exploit simple extreme value theory to make predictions about the late 21st century climate. Current work on the relationship between global warming and the hurricane cycle will also be presented. The bottom line is that events that are considered rare today

166

Impacts of High Resolution Extreme Events on U.S. Energy Demand and CO{sub 2} Emissions in the 21st Century  

SciTech Connect

Progress is reported in these areas: Validation of temperature and precipitation extremes; Time of emergence of severe heat stress in the United States; Quantifying the effects of temperature extremes on energy demand and carbon dioxide emissions.

Diffenbaugh, Noah [Stanford University

2013-06-21T23:59:59.000Z

167

Extremal graphs without 4-cycles  

Science Conference Proceedings (OSTI)

We prove an upper bound for the number of edges a C"4-free graph on q^2+q vertices can contain for q even. This upper bound is achieved whenever there is an orthogonal polarity graph of a plane of even order q. Keywords: Extremal graph, Polarity, Projective plane

Frank A. Firke, Peter M. Kosek, Evan D. Nash, Jason Williford

2013-05-01T23:59:59.000Z

168

Protection Against Ionizing Radiation in Extreme Radiation ...  

Science Conference Proceedings (OSTI)

Protection Against Ionizing Radiation in Extreme Radiation-resistant Microorganisms. ... Elucidated radiation protection by intracellular halides. ...

2013-05-01T23:59:59.000Z

169

Accuracy of modelled extremes of temperature and climate change  

E-Print Network (OSTI)

, for example, Good practice guides (Carbon Trust), Applications Manual CIBSE (1999), The CHP QA standard (CHP

Watson, Andrew

170

Studying Materials Under Extreme Pressure  

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

Studying Materials Under Extreme Pressure Studying Materials Under Extreme Pressure Coupling undulator radiation from Advanced Photon Source (APS) beamlines 3-ID and 13-ID to nuclear resonant inelastic scattering techniques, researchers have determined the phonon density of states for iron under pressures up to 153 gigapascals, equivalent to those found at the Earth's core. Image of the Earth's core. Although indirect measurements and theory have, since the early 1950s, produced an informed picture of the structure and composition of the materials that make up the core of the Earth, direct proof and the answers to some intriguing questions remain unanswered. Previously, ultrahigh-pressure experiments using nuclear resonant inelastic scattering have been difficult to carry out due the tiny samples required.

171

Climate, extreme heat, and electricity demand in California  

SciTech Connect

Climate projections from three atmosphere-ocean climate models with a range of low to mid-high temperature sensitivity forced by the Intergovernmental Panel for Climate Change SRES higher, middle, and lower emission scenarios indicate that, over the 21st century, extreme heat events for major cities in heavily air-conditioned California will increase rapidly. These increases in temperature extremes are projected to exceed the rate of increase in mean temperature, along with increased variance. Extreme heat is defined here as the 90 percent exceedance probability (T90) of the local warmest summer days under the current climate. The number of extreme heat days in Los Angeles, where T90 is currently 95 F (32 C), may increase from 12 days to as many as 96 days per year by 2100, implying current-day heat wave conditions may last for the entire summer, with earlier onset. Overall, projected increases in extreme heat under the higher A1fi emission scenario by 2070-2099 tend to be 20-30 percent higher than those projected under the lower B1 emission scenario, ranging from approximately double the historical number of days for inland California cities (e.g. Sacramento and Fresno), up to four times for previously temperate coastal cities (e.g. Los Angeles, San Diego). These findings, combined with observed relationships between high temperature and electricity demand for air-conditioned regions, suggest potential shortfalls in transmission and supply during T90 peak electricity demand periods. When the projected extreme heat and peak demand for electricity are mapped onto current availability, maintaining technology and population constant only for demand side calculations, we find the potential for electricity deficits as high as 17 percent. Similar increases in extreme heat days are suggested for other locations across the U.S. southwest, as well as for developing nations with rapidly increasing electricity demands. Electricity response to recent extreme heat events, such as the July 2006 heat wave in California, suggests that peak electricity demand will challenge current supply, as well as future planned supply capacities when population and income growth are taken into account.

Miller, N.L.; Hayhoe, K.; Jin, J.; Auffhammer, M.

2008-04-01T23:59:59.000Z

172

Environmental impacts of large-scale grid-connected ground-mounted PV installations  

E-Print Network (OSTI)

,6]. They highlighted the photovoltaic potential for a low carbon energy supply and the environmental benefits of PV comparison of energy supply options. 21st European Photovoltaic Solar Energy Conference. 2006. [8] IEA European Photovoltaic Energy Conference. 2008. [12] D. Beloin-Saint-Pierre, I. Blanc, J. Payet, P. Jacquin

173

Grid-connected Solar Electric Systems: The Earthscan Expert Handbook for Planning, Design and Installation  

Science Conference Proceedings (OSTI)

Solar electricity or photovoltaics (PV) is the world's fastest growing energy technology. It can be used on a wide variety of scales, from single dwellings to utility-scale solar farms providing power for whole communities. It can be integrated into ...

Geoff Stapleton; Susan Neill

2012-01-01T23:59:59.000Z

174

Investigations of grid-connected wind power system : low voltage ride through and power quality issues.  

E-Print Network (OSTI)

??This thesis presents an investigation on system architecture, control and analysis of wind turbine generators to improve grid integration performance. First of all, the main (more)

Zhang, Shao.

2011-01-01T23:59:59.000Z

175

Appropriate storage for high-penetration grid-connected photovoltaic plants A.A. Solomon a  

E-Print Network (OSTI)

% of the annual load requirements could have been achieved, albeit at the cost of having to dump approximately 5 be derived by detailed consideration of the three-way mutual interactions among storage, demand profile

Kammen, Daniel M.

176

MODULAR MULTI-LEVEL CONVERTER BASED HVDC SYSTEM FOR GRID CONNECTION OF OFFSHORE WIND  

E-Print Network (OSTI)

Control and Protection of Wind Power Plants with VSC-HVDC Connection By Sanjay K Chaudhary. VSC-HVDC cable transmission is a favourable option for a large and remote offshore wind power plant of a potential wind power plant with VSC-HVDC connection to the onshore grid. The test system is modelled

Chaudhary, Sanjay

177

Reactive power control of grid-connected wind farm based on adaptive dynamic programming  

E-Print Network (OSTI)

of wind farm with doubly fed induction generators (DFIG). Specifically, we investigate the on-cage induction generator, permanent magnet synchronous generator and doubly fed induction generator (DFIG). DFIG of DFIG are high efficiency, flexible control and low investment. The stator of DFIG is directly connected

He, Haibo

178

Power control of a wind farm with active stall wind turbines and AC grid connection  

E-Print Network (OSTI)

turbines with AC connection. The control of other wind farm concepts such as wind farms with DFIG wind

179

Simulation and Experimental Analysis of Grid-Connected Doubly-Fed Induction Generators  

Science Conference Proceedings (OSTI)

With the increase of wind generation penetration in power systems, it becomes more and more important to study its impact on power systems characteristics. The accurate dynamic modeling of wind plants is critical for the grid planning and operating studies. ... Keywords: doubly fed induction generator (DFIG), short-circuit test, model validation, transient stability

Guo Jiayang; Yu Xiao; Wu Tao; Chang Xianrong; Li Shanying; Liu Hui; Sun Yu

2010-06-01T23:59:59.000Z

180

REDUCING MISMATCH LOSSES IN GRID-CONNECTED RESIDENTIAL BIPV ARRAYS USING ACTIVE POWER CONVERSION COMPONENTS  

E-Print Network (OSTI)

/Simulink© environment for each topology using a 3 kWp rooftop-type plant. Simulation results show that a considerable amount of additional solar generated energy can be grid-fed using alternative plant layouts. 1 occur due to nearby buildings, trees, antennas or chimneys, which are usually inherent to the solar

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Dynamic Analysis of a Grid-Connected Wind Electric Generator with Embedded Static VAR Compensator  

Science Conference Proceedings (OSTI)

This paper describes modeling and simulation of Wind Electric Generator (WEG) comprising a pitch controlled Horizontal Axis Wind Turbine (HAWT) coupled to squirrel cage induction generator through a gear. The generic issue of VAR drain from the grid ... Keywords: Wind turbine, induction generator, two mass model - drive train, SVC, wind electric generator dynamics

Vishnuvardhanan V.; Sasi K. Kottayil

2009-12-01T23:59:59.000Z

182

Power Smoothing Control in a Grid-Connected Marine Current Turbine System for Compensating  

E-Print Network (OSTI)

of generator power. In the second step, Super-capacitor (SC) Energy Storage System (ESS) is added to compensate, supercapacitor. NOMENCLATURE ESS Energy storage system MCT Marine current turbine MPPT Maximum power point tracking PMSG Permanent-magnet synchronous generator SoC State of charge SC Supercapacitor , , Magnitude

Brest, Université de

183

Control of Solar Photovoltaic (PhV) Power Generation In Grid-connected and Islanded Microgrids.  

E-Print Network (OSTI)

??With the ever increasing electricity demand, fast depletion of fossil fuel and the growing trend towards renewable energy resources, the integration of green distributed energy (more)

Adhikari, Sarina

2013-01-01T23:59:59.000Z

184

New EIA data show total grid-connected photovoltaic solar capacity ...  

U.S. Energy Information Administration (EIA)

Using new information, EIA combines data on utility-scale solar photovoltaic (PV) capacity with customer-sited PV capacity, as reported in the graphic.

185

Design and implementation of a low cost grid-connected 10 kw hydro power system.  

E-Print Network (OSTI)

??ENGLISH ABSTRACT: The world is increasingly being faced with the challenge of effectively exploiting available renewable energy resources, not only to meet an ever growing (more)

Lombard, Adriaan Cornelius Johannes

2010-01-01T23:59:59.000Z

186

Homeowners Guide to Financing a Grid-Connected Solar Electric System (Brochure)  

SciTech Connect

This guide provides an overview of the financing options that may be available to homeowners who are considering installing a solar electric system on their house.

Not Available

2010-10-01T23:59:59.000Z

187

Assessing the Reliability and Economics of Wide-Scale Grid-Connected...  

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

at Carnegie Mellon University as well as a graduate researcher in the Carnegie Mellon Electricity Industry Center. He has a B.A. in Physics (with minors in Political Science...

188

Grid-connected integrated community energy system. Phase II, Stage 2, final report. Executive summary  

DOE Green Energy (OSTI)

The University of Minnesota Grid-ICES was divided into four identifiable programs in order to study the feasibility of each of the parts of the ICES independently. The total program involves cogeneration, fuel conversion, fuel substitution, and energy conservation by system change. This Phase II report substantiates the theory that the Basic Grid ICES is not only energy-effective, but it will become cost effective as unit operating costs adjust to supply and demand in the 1980's. The Basic Program involves the cogeneration of steam and electricity. The University of Minnesota has been following an orderly process of converting its Central Heating Plant from gas-oil to 100% coal since 1973. The first step in the transition is complete. The University is presently 100% on coal, and will begin the second step, the test burning of low Btu Western coal during the spring, summer, and fall, and high Btu Eastern coal during the high thermal winter period. The final step to 100% Western coal is planned to be completed by 1980. In conjunction with the final step a retired Northern States Power generating plant has been purchased and is in the process of being retrofitted for topping the existing plant steam output during the winter months. The Basic Plan of ICES involves the add-on work and expense of installing additional boiler capacity at Southeast Steam and non-condensing electric generating capability. This will permit the simultaneous generation of electricity and heat dependent upon the thermal requirements of the heating and cooling system in University buildings. This volume presents an overview of the Community and the ICES. (MCW)

Not Available

1978-03-22T23:59:59.000Z

189

Emerging Technology and Architecture Approaches for Plug-in Electric Vehicles to Smart Grid Connectivity  

Science Conference Proceedings (OSTI)

This report provides an overview of the latest advances in technologies evolving to facilitate plug-in electric vehicles (PEVs) to Smart Grid integration. It reiterates applicable requirements based on fundamental principles as well as provides a status on the evolving relevant standards space. Multiple technological approaches are presented, compared, and contrasted; and an update on the status of each is provided. The document concludes with early recommendations for utility and automotive industry pra...

2011-12-21T23:59:59.000Z

190

Estimating the maximum potential revenue for grid connected electricity storage : arbitrage and regulation.  

Science Conference Proceedings (OSTI)

The valuation of an electricity storage device is based on the expected future cash ow generated by the device. Two potential sources of income for an electricity storage system are energy arbitrage and participation in the frequency regulation market. Energy arbitrage refers to purchasing (stor- ing) energy when electricity prices are low, and selling (discharging) energy when electricity prices are high. Frequency regulation is an ancillary service geared towards maintaining system frequency, and is typically procured by the independent system operator in some type of market. This paper outlines the calculations required to estimate the maximum potential revenue from participating in these two activities. First, a mathematical model is presented for the state of charge as a function of the storage device parameters and the quantities of electricity purchased/sold as well as the quantities o ered into the regulation market. Using this mathematical model, we present a linear programming optimization approach to calculating the maximum potential revenue from an elec- tricity storage device. The calculation of the maximum potential revenue is critical in developing an upper bound on the value of storage, as a benchmark for evaluating potential trading strate- gies, and a tool for capital nance risk assessment. Then, we use historical California Independent System Operator (CAISO) data from 2010-2011 to evaluate the maximum potential revenue from the Tehachapi wind energy storage project, an American Recovery and Reinvestment Act of 2009 (ARRA) energy storage demonstration project. We investigate the maximum potential revenue from two di erent scenarios: arbitrage only and arbitrage combined with the regulation market. Our analysis shows that participation in the regulation market produces four times the revenue compared to arbitrage in the CAISO market using 2010 and 2011 data. Then we evaluate several trading strategies to illustrate how they compare to the maximum potential revenue benchmark. We conclude with a sensitivity analysis with respect to key parameters.

Byrne, Raymond Harry; Silva Monroy, Cesar Augusto.

2012-12-01T23:59:59.000Z

191

Developement of a digitally controlled low power single phase inverter for grid connected solar panel.  

E-Print Network (OSTI)

?? The work consists in developing a power conversion unit for solar panel connected to the grid. This unit will be a single phase inverter (more)

Marguet, Raphael

2010-01-01T23:59:59.000Z

192

Modeling, simulation, and analysis of grid connected dish-stirling solar power plants .  

E-Print Network (OSTI)

??The percentage of renewable energy within the global electric power generation portfolio is expected to increase rapidly over the next few decades due to increasing (more)

Howard, Dustin F.

2010-01-01T23:59:59.000Z

193

Impact Assessment and Modeling of Grid Connected Loads and Power Supplies  

Science Conference Proceedings (OSTI)

This report contains results of preliminary testing of six light-emitting diode (LED) roadway and area light fixtures from six manufacturers. These fixtures were subjected to a series of tests to determine general specifications, emissions profile, immunity to voltage distortion and sags, and immunity to voltage surges.

2011-12-21T23:59:59.000Z

194

Meeting the New CARB ZEV Mandate Requirements: Grid-Connected Hybrids and City EVs  

E-Print Network (OSTI)

= -60 mphtop speed Battery capacity ~113-1/2of full BEVbatteries -8 4 kW- hr capacity e-com Battery Pack Locationetc Battery Endof Lde (EEL)wasdefined as 80% capacity for

Burke, Andrew

2001-01-01T23:59:59.000Z

195

GAP analysis towards a design qualification standard development for grid-connected photovoltaic inverters.  

SciTech Connect

A dedicated design qualification standard for PV inverters does not exist. Development of a well-accepted design qualification standard, specifically for PV inverters will significantly improve the reliability and performance of inverters. The existing standards for PV inverters such as ANSI/UL 1741 and IEC 62109-1 primarily focus on safety of PV inverters. The IEC 62093 discusses inverter qualification but it includes all the BOS components. There are other general standards for distributed generators including the IEEE 1547 series of standards which cover major concerns like utility integration but they are not dedicated to PV inverters and are not written from a design qualification point of view. In this paper some of the potential requirements for a design qualification standard for PV inverters are addressed. The missing links in existing PV inverter related standards are identified and with the IEC 62093 as a guideline, the possible inclusions in the framework for a dedicated design qualification standard of PV inverter are discussed. Some of the key missing links are related to electric stress tests. Hence, a method to adapt the existing surge withstand test standards for use in design qualification standard of PV inverter is presented.

Tamizhmani, Govindasamy (Arizona State University, Tempe, AZ); Granata, Jennifer E.; Maracas, George (Arizona State University, Tempe, AZ); Ayyanar, Raja (Arizona State University, Tempe, AZ); Marinella, Matthew; Venkataramanan, Sai Balasubramanian Alampoondi (Arizona State University, Tempe, AZ)

2011-06-01T23:59:59.000Z

196

Evolutionary algorithms for the design of grid-connected PV-systems  

Science Conference Proceedings (OSTI)

The sale of electric energy generated by photovoltaic (PV) plants has attracted much attention in recent years. The installation of PV plants aims to obtain the maximum benefit of captured solar energy. The current methodologies for planning the design ... Keywords: Differential evolution, Evolutionary algorithms, Numerical optimization, Photovoltaic plants

Daniel Gmez-Lorente; Isaac Triguero; Consolacin Gil; A. Espn Estrella

2012-07-01T23:59:59.000Z

197

Utility Grid-Connected Distributed Power Systems National Solar Energy Conference  

E-Print Network (OSTI)

OF THE PROPOSED REGULATION REPEAL: UCF-8.002 Solar Thermal Collector and PV Module Testing Standards. (1) The Testing and Standards Program shall apply to solar thermal collectors and PV modules submitted for testing thermal collectors or PV modules in Florida. (3) The criteria for testing the performance of solar thermal

198

Performance of a grid connected residential photovoltaic system with energy storage  

DOE Green Energy (OSTI)

In 1995, Salt River Project (SRP), a public power utility located in Phoenix, Arizona, collaborated with the Electric Power Research Institute (EPRI) and Sandia National Laboratories (Sandia) to initiate a photovoltaic (PV) power system with battery energy storage to match PV output with residential customer peak energy demand periods. The PV power system, a 2.4kW PV array with 25.2kWh of energy storage, was designed and installed by Southwest Technology Development Institute (SWTDI) at an SRP-owned facility, known as the Chandler Research House during August 1995. This paper presents an overview of the system design, operation and performance. 3 refs., 2 figs., 2 tabs.

Palomino, G.E. [SRP, Phoenix, AZ (United States); Wiles, J. [Southwest Technology Development Institute, Las Cruces, NM (United States); Stevens, J. [Sandia National Labs., Albuquerque, NM (United States); Goodman, F. [EPRI, Palo Alto, CA (United States)

1997-11-01T23:59:59.000Z

199

Computer simulation of the operations of utility grid connected photovoltaic power plants  

Science Conference Proceedings (OSTI)

In order to evaluate the commercial viability of photovoltaic power systems it is necessary to have reliable estimates and descriptions of the supply of electricity generated by the solar technology, the demand for that electricity, and the market application. ...

Chester S. Borden

1980-05-01T23:59:59.000Z

200

Optimal control of a grid-connected hybrid electrical energy storage system for homes  

Science Conference Proceedings (OSTI)

Integrating residential photovoltaic (PV) power generation and electrical energy storage (EES) systems into the Smart Grid is an effective way of utilizing renewable power and reducing the consumption of fossil fuels. This has become a particularly interesting ... Keywords: hybrid electrical energy storage system, optimal control, smart grid

Yanzhi Wang, Xue Lin, Massoud Pedram, Sangyoung Park, Naehyuck Chang

2013-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Meeting the New CARB ZEV Mandate Requirements: Grid-Connected Hybrids and City EVs  

E-Print Network (OSTI)

Three User Groups: Homebased Users, Workbased Commuters, andK MODEL CARLINK I: USER GROUPS Homebased Users: Vehicle) $Ira Permanent Service, Several Homebased Users Would Sell

Burke, Andrew

2001-01-01T23:59:59.000Z

202

EERE News: Maine Deploys First U.S. Commercial, Grid-Connected...  

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

in this innovative clean energy technology and diversify the nation's energy mix. "Developing America's vast renewable energy resources is an important part of President...

203

Theoretical efficiency and asymptotic cost of grid-connected photovoltaic systems  

Science Conference Proceedings (OSTI)

Photovoltaics (PV) are regarded as a clean source energy technology and their use has expanded dramatically in recent years for both commercial and residential sectors. Learning curve studies show that PV modules have experienced very rapid reductions ...

Yan Yang; Eric Williams

2009-05-01T23:59:59.000Z

204

Grid-connectivity of remote isolated islandsA proposition in Indian context  

Science Conference Proceedings (OSTI)

This paper has analyzed the cases of Moushuni Island at Sundarban of 24 Parganas South of West Bengal

Aurobi Das; V. Balakrishnan

2012-01-01T23:59:59.000Z

205

Moderate Temperature | Open Energy Information  

Open Energy Info (EERE)

Moderate Temperature Moderate Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Moderate Temperature Dictionary.png Moderate Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 190°C and 230°C is considered by Sanyal to be "moderate temperature." "The next higher resource temperature limit is chosen as 230°C, which is lower than the minimum initial resource temperature encountered in

206

Advanced Materials and Processes for Extreme Environments  

Science Conference Proceedings (OSTI)

Symposium, Advanced Materials and Reservoir Engineering for Extreme Oil & Gas Environments. Presentation Title, Advanced Materials and Processes for...

207

Accelerator Mass Spectrometry: Extreme Sensitivity in Biological ...  

THE LLNL TECHNOLOGY COMPANY PRODUCT 24 Partnering Today: Technology Transfer Highlights Accelerator Mass Spectrometry: Extreme Sensitivity in Biological Research

208

Extreme Winds and Wind Effects on Structures  

Science Conference Proceedings (OSTI)

Extreme Winds and Wind Effects on Structures. Description/Summary: The Building and Fire Research Laboratory has an ...

2010-10-04T23:59:59.000Z

209

Evolution & Ecology In Extreme Environments  

E-Print Network (OSTI)

Desiccation is a problem Body temperature can increase by 30 C · Aerodynamic forces are minimal Predators free? 32 #12;Solar Irradiance IR Convection Conduction Evaporation 33 #12;The heat-budget model takes into account: · Solar irradiance · Air temperature · Tidal height · Wave swash · Wind speed · and Sea

210

Mid-Twenty-First-Century Changes in Extreme Events over Northern and Tropical Africa  

Science Conference Proceedings (OSTI)

Changes in rainfall and temperature extremes are predicted by many global climate models as a response to greenhouse gas increases, and such changes will have significant environmental and social impacts. A regional climate model is used to ...

Edward K. Vizy; Kerry H. Cook

2012-09-01T23:59:59.000Z

211

Evaluation of IRIs Seasonal Climate Forecasts for the Extreme 15% Tails  

Science Conference Proceedings (OSTI)

This paper evaluates the quality of real-time seasonal probabilistic forecasts of the extreme 15% tails of the climatological distribution of temperature and precipitation issued by the International Research Institute for Climate and Society (IRI)...

Anthony G. Barnston; Simon J. Mason

2011-08-01T23:59:59.000Z

212

Simulated Links between Deforestation and Extreme Cold Events in South America  

Science Conference Proceedings (OSTI)

Many modeling studies have indicated that deforestation will increase the average annual temperature in the Amazon. However, few studies have investigated the potential for deforestation to change the frequency and intensity of extreme events. ...

David Medvigy; Robert L. Walko; Roni Avissar

2012-06-01T23:59:59.000Z

213

Preface to Symposium: Matter at Extreme Conditions: Theory and Application  

DOE Green Energy (OSTI)

The subject of ''Matter at Extreme Conditions'' encompasses a wide range of phenomena the thrust of which is to address the physical and chemical behaviors of materials exposed to ''abnormal'' conditions of high pressures, temperature extremes, or external fields. Recent advances in theoretical methodologies and first principle computational studies have predicted unusual properties and unraveled a few surprises when matter is subjected to such strains: a reversed and anomalous Doppler effects in shocked periodic media, the possible existence of low temperature liquid metallic state of hydrogen, and a superionic phase of water at high temperature and pressure. A unified approach from quantum mechanical principles allows for exploring such diverse and disparate subjects as ultracold plasmas in a strong magnetic field, and the dynamic aspects of Bose-Einstein condensates. These topics, which are aptly presented in this symposium, are but a few examples of interesting discoveries and methodologies in this active and exciting area of research. The development of reactive force fields from quantum mechanical principles for use in conjunction with molecular dynamics provide us with an invaluable tool for large-scale simulations to study the chemical transformations and decomposition products of complex organic systems at extreme conditions. Simulations implementing classical fields can provide an unprecedented access to the short time scales of chemical events that occur in dense fluids at high-temperature, and for the study of atomic clusters under strong laser pulses.

Manaa, M R

2005-07-20T23:59:59.000Z

214

Thermal disconnect for high-temperature batteries  

DOE Patents (OSTI)

A new type of high temperature thermal disconnect has been developed to protect electrical and mechanical equipment from damage caused by operation at extreme temperatures. These thermal disconnects allow continuous operation at temperatures ranging from 250.degree. C. to 450.degree. C., while rapidly terminating operation at temperatures 50.degree. C. to 150.degree. C. higher than the continuous operating temperature.

Jungst, Rudolph George (Albuquerque, NM); Armijo, James Rudolph (Albuquerque, NM); Frear, Darrel Richard (Austin, TX)

2000-01-01T23:59:59.000Z

215

High Temperature | Open Energy Information  

Open Energy Info (EERE)

Temperature Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: High Temperature Dictionary.png High Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 230°C and 300°C is considered by Sanyal to be "high temperature." "Above a temperature level of 230°C, the reservoir would be expected to become two-phase at some point during exploitation. The next higher

216

Granular gases under extreme driving  

E-Print Network (OSTI)

We study inelastic gases in two dimensions using event-driven molecular dynamics simulations. Our focus is the nature of the stationary state attained by rare injection of large amounts of energy to balance the dissipation due to collisions. We find that under such extreme driving, with the injection rate much smaller than the collision rate, the velocity distribution has a power-law high energy tail. The numerically measured exponent characterizing this tail is in excellent agreement with predictions of kinetic theory over a wide range of system parameters. We conclude that driving by rare but powerful energy injection leads to a well-mixed gas and constitutes an alternative mechanism for agitating granular matter. In this distinct nonequilibrium steady-state, energy cascades from large to small scales. Our simulations also show that when the injection rate is comparable with the collision rate, the velocity distribution has a stretched exponential tail.

W. Kang; J. Machta; E. Ben-Naim

2010-02-04T23:59:59.000Z

217

Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Temperature Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Low Temperature Dictionary.png Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 150°C and 190°C is considered by Sanyal to be "low temperature." "The mobile fluid phase in these reservoirs is liquid water. A number of commercial power projects have been operated over the last two decades

218

Announcing the Argonne Training Program on Extreme-Scale Computing...  

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

Announcing the Argonne Training Program on Extreme-Scale Computing Argonne Training Program on Extreme-Scale Computing Providing Extreme-Scale Supercomputing Training for...

219

Extreme Associated Functions: Optimally Linking Local Extremes to Large-scale Atmospheric Circulation Structures  

E-Print Network (OSTI)

We present a new statistical method to optimally link local weather extremes to large-scale atmospheric circulation structures. The method is illustrated using July-August daily mean temperature at 2m height (T2m) time-series over the Netherlands and 500 hPa geopotential height (Z500) time-series over the Euroatlantic region of the ECMWF reanalysis dataset (ERA40). The method identifies patterns in the Z500 time-series that optimally describe, in a precise mathematical sense, the relationship with local warm extremes in the Netherlands. Two patterns are identified; the most important one corresponds to a blocking high pressure system leading to subsidence and calm, dry and sunny conditions over the Netherlands. The second one corresponds to a rare, easterly flow regime bringing warm, dry air into the region. The patterns are robust; they are also identified in shorter subsamples of the total dataset. The method is generally applicable and might prove useful in evaluating the performance of climate models in s...

Panja, Debabrata

2007-01-01T23:59:59.000Z

220

Extremely Hazardous Substances Risk Management Act (Delaware)  

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

This act lays out provisions for local governments to implement regulations and standards for the management of extremely hazardous substances, which are defined and categorized as follows:

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Extreme Ultraviolet Variability Experiment (EVE) Multiple EUV ...  

Science Conference Proceedings (OSTI)

and the Extreme ultraviolet SpectroPhotometer (ESP). The radiometric ... the calibration of the ESP instrument is addressed by Didkovsky et al. (Solar Phys.

222

Extreme Value Analysis of Heart Beat Fluctuations  

Science Conference Proceedings (OSTI)

We have performed an extreme value analysis of the heart beat fluctuations. We have analyzed 24?h ECG time series: by considering both

C. Pennetta; S. Conte

2009-01-01T23:59:59.000Z

223

DISASTER POLICY Including Extreme Emergent Situations (EES)  

E-Print Network (OSTI)

on the ACGME website with information relating to the ACGME response to the disaster. 3. The University-specific Program Requirements. Defined Responsibilities Following the Declaration of a Disaster or Extreme EmergentPage 123 DISASTER POLICY Including Extreme Emergent Situations (EES) The University of Connecticut

Oliver, Douglas L.

224

Complex Plasma Research Under Extreme Conditions  

Science Conference Proceedings (OSTI)

Complex plasma research under extreme conditions is described. The extreme conditions include low-dimensionality for self-organized structures of dust particles, dust magnetization in high magnetic field, criticality in phase transition, and cryogenic environment for Coulomb crystals and dust dynamics.

Ishihara, Osamu [Faculty of Engineering, Yokohama National University 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501 (Japan)

2008-09-07T23:59:59.000Z

225

Information Causality and Extremal Tripartite Correlations  

E-Print Network (OSTI)

We study the principle of information causality for the set of extremal correlations in the tripartite scenario. We show that all but one nonlocal extremal correlations in this scenario violate information causality. This undetected correlation is shown to satisfy any bipartite physical principle.

Yang, Tzyh Haur; Almeida, Mafalda; Teo, Colin; Scarani, Valerio

2011-01-01T23:59:59.000Z

226

Building Energy Software Tools Directory: EXTREMES  

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

EXTREMES EXTREMES EXTREMES logo. Synthesizes extreme, but statistically possible, hot, cold or average sequences of hourly weather data for periods of up to one week for a specified month and for 329 locations in North America, with the capability of modifying or expanding the data for greater flexibility. Such data are needed in the design of building heating and cooling systems, particularly systems which utilize some form of energy storage. Screen Shots Keywords extreme weather, weather sequences, simulation, energy calculation Validation/Testing N/A Expertise Required Student or engineer of HVAC system design. Low level of computer literacy required. Users Worldwide distribution. Useful for U.S. and Canada locations Audience Researchers, Students, Engineers and Architects

227

Extreme wave impinging and overtopping  

E-Print Network (OSTI)

This investigates the velocity fields of a plunging breaking wave impinging on a structure through measurements in a two-dimensional wave tank. As the wave breaks and overtops the structure, so-called green water is generated. The flow becomes multi-phased and chaotic as a highly aerated region is formed in the flow in the vicinity of the structure while water runs up onto the structure. In this study, particle image velocimetry (PIV) was employed to measure the velocity field of the water dominant region. For measurements of an aerated region that cannot be measured by PIV, a new measurement method called bubble image velocimetry (BIV) was developed. The principle and setup of the BIV method were introduced and validated. Mean and turbulence properties were obtained through ensemble averaging repeated tests measured by both methods. The dominant and maximum velocity of the breaking wave and associated green water are discussed for the three distinct phases of the impingement-runup-overtopping sequence. The distribution of the green water velocity along the top of the structure has a nonlinear profile and the maximum velocity occurs near the front of the fast moving water. Using the measured data and applying dimensional analysis, a similarity profile for the green water flow on top of the structure was obtained, and a prediction equation was formulated. The dam breaking solution used for the green water prediction was examined with determining initial water depth based on the experiment conditions. Comparison between measurements, the prediction equation, and the dam breaking flow was made. The prediction equation and the dam break flow with appropriate initial water depth may be used to predict the green water velocity caused by extreme waves in a hurricane. To demonstrate the aeration of the breaking wave and overtopping water, void fraction was also investigated. There is strong aeration in the region of overtopping water front generated by a plunging breaker. Void fraction of overtopping water was measured using a fiber optic reflectometer (FOR). The measured velocity and void fraction were also used to estimate flow rate and water volume of overtopping water.

Ryu, Yong Uk

2006-08-01T23:59:59.000Z

228

Extreme Scale Computing, Co-design  

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

Extreme Scale Computing, Co-design Extreme Scale Computing, Co-design Extreme Scale Computing, Co-design Computational co-design may facilitate revolutionary designs in the next generation of supercomputers. Get Expertise Tim Germann Physics and Chemistry of Materials Email Allen McPherson Energy and Infrastructure Analysis Email Turab Lookman Physics and Condensed Matter and Complex Systems Email Computational co-design involves developing the interacting components of a computational system as a whole. Informing system design, ensuring productive and efficient code Project Description To address the increasingly complex problems of the modern world, scientists at Los Alamos are pushing the scale of computing to the extreme, forming partnerships with other national laboratories and industry to

229

Measures of Economic Impacts of Weather Extremes  

Science Conference Proceedings (OSTI)

One of the primary driving forces behind weather research and development has been the losses caused by weather extremes. Unfortunately, available loss values have been more qualitative than quantitative. There has never been a concerted, ...

Stanley D. Changnon

2003-09-01T23:59:59.000Z

230

Extreme Rainfall Events in the Hawaiian Islands  

Science Conference Proceedings (OSTI)

Heavy rainfall and the associated floods occur frequently in the Hawaiian Islands and have caused huge economic losses as well as social problems. Extreme rainfall events in this study are defined by three different methods based on 1) the mean ...

Pao-Shin Chu; Xin Zhao; Ying Ruan; Melodie Grubbs

2009-03-01T23:59:59.000Z

231

Jordan Algebras and Extremal Black Holes  

E-Print Network (OSTI)

We review various properties of the exceptional Euclidean Jordan algebra of degree three. Euclidean Jordan algebras of degree three and their corresponding Freudenthal triple systems were recently shown to be intimately related to extremal black holes in N=2, d=4 homogeneous supergravities. Using a novel type of eigenvalue problem with eigenmatrix solutions, we elucidate the rich matrix geometry underlying the exceptional N=2, d=4 homogeneous supergravity and explore the relations to extremal black holes.

Michael Rios

2007-03-27T23:59:59.000Z

232

Modeling Northern Hemisphere Summer Heat Extreme Changes and Their Uncertainties Using a Physics Ensemble of Climate Sensitivity Experiments  

Science Conference Proceedings (OSTI)

Changes in extreme daily temperature events are examined using a perturbed physics ensemble of global model simulations under present-day and doubled CO2 climates where ensemble members differ in their representation of various physical ...

Robin T. Clark; Simon J. Brown; James M. Murphy

2006-09-01T23:59:59.000Z

233

Changes in the Extremes in an Ensemble of Transient Climate Simulations with a Coupled AtmosphereOcean GCM  

Science Conference Proceedings (OSTI)

The extremes of surface temperature, precipitation, and wind speed and their changes under projected changes in radiative forcing are examined in an ensemble of three transient climate change simulations for the years 19002100 conducted with the ...

Viatcheslav V. Kharin; Francis W. Zwiers

2000-11-01T23:59:59.000Z

234

Low-Frequency Signals in Midtropospheric Submonthly Temperature Variance  

Science Conference Proceedings (OSTI)

Low-frequency signals in the daily variability of temperature in the midtroposphere are investigated, thereby complementing published studies of changes in day-to-day temperature variability and in extreme weather events at the surface. The ...

Haig Iskenderian; Richard D. Rosen

2000-07-01T23:59:59.000Z

235

Some Considerations Relevant to Computing Average Hemispheric Temperature Anomalies  

Science Conference Proceedings (OSTI)

Three data bases of gridded surface temperature anomalies were used to assess the sensitivity of the average estimated Northern Hemisphere (NH) temperature anomaly to: 1) extreme gridpoint values and 2) zonal band contributions. Over the last 100 ...

S. L. Grotch

1987-07-01T23:59:59.000Z

236

Artificial neural networks for automated year-round temperature prediction  

Science Conference Proceedings (OSTI)

Crops and livestock in most of the southeastern United States are susceptible to potential losses due to extreme cold and heat. However, given suitable warning, agricultural and horticultural producers can mitigate the damage of extreme temperature events. ... Keywords: Artificial intelligence, Frost protection, Fruit crops, Neural network, Temperature prediction, Vegetable crops

Brian A. Smith; Gerrit Hoogenboom; Ronald W. McClendon

2009-08-01T23:59:59.000Z

237

SLAC National Accelerator Laboratory - Sharper Images for Extreme...  

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

Sharper Images for Extreme LCLS Experiments By Glenn Roberts Jr. April 17, 2013 PHOTO: Researchers working with MEC instruments The Matter in Extreme Conditions (MEC) station at...

238

Extreme Scale Computing, Co-design  

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

Extreme Scale Computing, Co-design Extreme Scale Computing, Co-design Informing system design, ensuring productive and efficient code Project Description To address the increasingly complex problems of the modern world, scientists at Los Alamos are pushing the scale of computing to the extreme, forming partnerships with other national laboratories and industry to develop supercomputers that can achieve "exaflop" speeds-that is, a quintillion (a million trillion) calculations per second. To put such speed in perspective, it is equivalent to 50 million laptops all working together at the same time. Researchers are also developing the interacting components of a computational system as a whole. This approach, known as computational co-design, may facilitate revolutionary designs in the next generation of supercomputers.

239

Extreme Computing Software | Argonne National Laboratory  

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

Extreme Computing Software Extreme Computing Software Argonne's Mathematics and Computer Science Division is exploring new approaches to systems software, fault tolerance, and innovative programming models for next-generation computers. Software for extreme computing includes: ADLB (Asynchronous Dynamic Load Balancing) is an MPI-based software library designed to help rapidly build scalable parallel programs. It provides a master/worker system with a put/get API for task descriptions, thus allowing workers to add work dynamically to the system. The library has been used as an execution engine for complicated applications such as Green's function Monte Carlo and higher level "many-task" programming models. Aesop is a high-productivity programming language designed for highly concurent services.

240

Fiber optic temperature sensor  

SciTech Connect

Our fiber optic temperature measurement sensor and system is a major improvement over methods currently in use in most industrial processes, and it delivers all of the attributes required simplicity, accuracy, and cost efficiency-to help improve all of these processes. Because temperature is a basic physical attribute of nearly every industrial and commercial process, our system can eventually result in significant improvements in nearly every industrial and commercial process. Many finished goods, and the materials that go into them, are critically dependent on the temperature. The better the temperature measurement, the better quality the goods will be and the more economically they can be produced. The production and transmission of energy requires the monitoring of temperature in motors, circuit breakers, power generating plants, and transmission line equipment. The more reliable and robust the methods for measuring these temperature, the more available, stable, and affordable the supply of energy will become. The world is increasingly realizing the threats to health and safety of toxic or otherwise undesirable by products of the industrial economy in the environment. Cleanup of such contamination often depends on techniques that require the constant monitoring of temperature in extremely hazardous environments, which can damage most conventional temperature sensors and which are dangerous for operating personnel. Our system makes such monitoring safer and more economical.

Rabold, D.

1995-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Statistics of Extreme Waves in Random Media  

E-Print Network (OSTI)

Waves traveling through random media exhibit random focusing that leads to extremely high wave intensities even in the absence of nonlinearities. Although such extreme events are present in a wide variety of physical systems and the statistics of the highest waves is important for their analysis and forecast, it remains poorly understood in particular in the regime where the waves are highest. We suggest a new approach that greatly simplifies the mathematical analysis and calculate the scaling and the distribution of the highest waves valid for a wide range of parameters.

Jakob J. Metzger; Ragnar Fleischmann; Theo Geisel

2013-11-18T23:59:59.000Z

242

Investigating Extreme Ultraviolet Lithography Mask Defects  

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

Investigating Extreme Investigating Extreme Ultraviolet Lithography Mask Defects Investigating Extreme Ultraviolet Lithography Mask Defects Print Wednesday, 28 July 2010 00:00 Since the 1970s, the semiconductor industry has strived to shrink the cost and size of circuit patterns printed onto computer chips in accordance with Moore's law, doubling the number of transistors on a computer's central processing unit (CPU) every two years. The introduction of extreme ultraviolet (EUV) lithography, printing chips using 13-nm-wavelength light, opens the way to future generations of smaller, faster, and cheaper semiconductors. EUV lithography relies on specialized lenses made of curved mirrors with reflective coatings called multilayers to print patterns with high resolution. One special flat mirror called a mask is particularly sensitive to even the smallest imperfections. To better detect and characterize mask defects, scientists at Berkeley Lab worked with SEMATECH, an international semiconductor industry consortium, to create a unique Fresnel zone-plate microscope on Advanced Light Source Beamline 11.3.2 called the SEMATECH Berkeley Actinic Inspection Tool (AIT).

243

Technological change: educating for extreme collaboration  

Science Conference Proceedings (OSTI)

This paper considers pedagogical strategies and techniques in design for attaining sustained innovation collaboratively, in order to assist in the New Product Design process and enhance opportunities for creating truly innovative products. The authors ... Keywords: collaborative working, design education, design innovation, design teams, extreme collaboration, multidisciplinary design, technological change

Vasilije Kokotovich; Tom Barker

2010-09-01T23:59:59.000Z

244

Ultra High Temperature | Open Energy Information  

Open Energy Info (EERE)

Ultra High Temperature Ultra High Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Ultra High Temperature Dictionary.png Ultra High Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid greater than 300°C is considered by Sanyal to be "ultra high temperature". "Such reservoirs are characterized by rapid development of steam saturation in the reservoir and steam fraction in the mobile fluid phase upon

245

Very Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Very Low Temperature Very Low Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Very Low Temperature Dictionary.png Very Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 100°C and 150°C is considered by Sanyal to be "very low temperature." "The mobile fluid phase in these reservoirs is liquid water. Very few power projects have been developed in the U.S. based on geothermal resources in

246

Catalytic Rare Earth Nanostructure Coatings for Extreme ...  

Science Conference Proceedings (OSTI)

... relation to corrosion resistance under sour environment at high pressure and temperature. ... of Transport Phenomena for Enhanced Oil Recovery Applications .

247

Category:Sanyal Temperature Classification | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Sanyal Temperature Classification Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Category:Sanyal Temperature Classification Geothermalpower.jpg Looking for the Sanyal Temperature Classification page? For detailed information on Sanyal Temperature Classification, click here. Pages in category "Sanyal Temperature Classification" The following 7 pages are in this category, out of 7 total. E Extremely Low Temperature H High Temperature L Low Temperature M Moderate Temperature S Steam Field U Ultra High Temperature V Very Low Temperature Retrieved from

248

LANL | Physics | Hydrodynamic Material Instabilities at extremes  

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

Understanding hydrodynamic material instabilities at extremes Understanding hydrodynamic material instabilities at extremes The National Nuclear Security Administration science-based stockpile stewardship program funds research that will improve critical physics-based dynamic materials models. Los Alamos National Laboratory and Lawrence Livermore National Laboratory, as nuclear weapon design laboratories, are mandated to predict the reliability and durability of the nuclear weapons stockpile. This is done using state-of-the-art supercomputers and computer codes. It is also important to have state-of-the-art physics models in these codes. Los Alamos has theory experts in dynamic materials, thus creating powerful working groups when combined with experimental experts in Physics Division and elsewhere. Key to the science-based stockpile stewardship program is making

249

Extremal Quantum Correlations and Cryptographic Security  

E-Print Network (OSTI)

We investigate fundamental properties of device independent security in quantum cryptography and show a one-to-one correspondence between extremal and secure probability distributions. This allows us to give a characterization of security in algebraic terms. We apply the method to common examples for two-party as well as multi-party setups and present a scheme for verifying the security of correlations with two parties, two measurement settings, and two outcomes.

Franz, T; Werner, R F

2010-01-01T23:59:59.000Z

250

Investigating Extreme Ultraviolet Lithography Mask Defects  

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

Investigating Extreme Ultraviolet Lithography Mask Defects Print Investigating Extreme Ultraviolet Lithography Mask Defects Print Since the 1970s, the semiconductor industry has strived to shrink the cost and size of circuit patterns printed onto computer chips in accordance with Moore's law, doubling the number of transistors on a computer's central processing unit (CPU) every two years. The introduction of extreme ultraviolet (EUV) lithography, printing chips using 13-nm-wavelength light, opens the way to future generations of smaller, faster, and cheaper semiconductors. EUV lithography relies on specialized lenses made of curved mirrors with reflective coatings called multilayers to print patterns with high resolution. One special flat mirror called a mask is particularly sensitive to even the smallest imperfections. To better detect and characterize mask defects, scientists at Berkeley Lab worked with SEMATECH, an international semiconductor industry consortium, to create a unique Fresnel zone-plate microscope on Advanced Light Source Beamline 11.3.2 called the SEMATECH Berkeley Actinic Inspection Tool (AIT).

251

Investigating Extreme Ultraviolet Lithography Mask Defects  

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

Investigating Extreme Ultraviolet Lithography Mask Defects Print Investigating Extreme Ultraviolet Lithography Mask Defects Print Since the 1970s, the semiconductor industry has strived to shrink the cost and size of circuit patterns printed onto computer chips in accordance with Moore's law, doubling the number of transistors on a computer's central processing unit (CPU) every two years. The introduction of extreme ultraviolet (EUV) lithography, printing chips using 13-nm-wavelength light, opens the way to future generations of smaller, faster, and cheaper semiconductors. EUV lithography relies on specialized lenses made of curved mirrors with reflective coatings called multilayers to print patterns with high resolution. One special flat mirror called a mask is particularly sensitive to even the smallest imperfections. To better detect and characterize mask defects, scientists at Berkeley Lab worked with SEMATECH, an international semiconductor industry consortium, to create a unique Fresnel zone-plate microscope on Advanced Light Source Beamline 11.3.2 called the SEMATECH Berkeley Actinic Inspection Tool (AIT).

252

Chiral gravity, log gravity, and extremal CFT  

Science Conference Proceedings (OSTI)

We show that the linearization of all exact solutions of classical chiral gravity around the AdS{sub 3} vacuum have positive energy. Nonchiral and negative-energy solutions of the linearized equations are infrared divergent at second order, and so are removed from the spectrum. In other words, chirality is confined and the equations of motion have linearization instabilities. We prove that the only stationary, axially symmetric solutions of chiral gravity are BTZ black holes, which have positive energy. It is further shown that classical log gravity--the theory with logarithmically relaxed boundary conditions--has finite asymptotic symmetry generators but is not chiral and hence may be dual at the quantum level to a logarithmic conformal field theories (CFT). Moreover we show that log gravity contains chiral gravity within it as a decoupled charge superselection sector. We formally evaluate the Euclidean sum over geometries of chiral gravity and show that it gives precisely the holomorphic extremal CFT partition function. The modular invariance and integrality of the expansion coefficients of this partition function are consistent with the existence of an exact quantum theory of chiral gravity. We argue that the problem of quantizing chiral gravity is the holographic dual of the problem of constructing an extremal CFT, while quantizing log gravity is dual to the problem of constructing a logarithmic extremal CFT.

Maloney, Alexander [Physics Department, McGill University, Montreal, QC H3A 2T8 (Canada); Song Wei [Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190 (China); Center for the Fundamental Laws of Nature Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts 02138 (United States); Strominger, Andrew [Center for the Fundamental Laws of Nature Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts 02138 (United States)

2010-03-15T23:59:59.000Z

253

Chiral Gravity, Log Gravity and Extremal CFT  

E-Print Network (OSTI)

We show that the linearization of all exact solutions of classical chiral gravity around the AdS3 vacuum have positive energy. Non-chiral and negative-energy solutions of the linearized equations are infrared divergent at second order, and so are removed from the spectrum. In other words, chirality is confined and the equations of motion have linearization instabilities. We prove that the only stationary, axially symmetric solutions of chiral gravity are BTZ black holes, which have positive energy. It is further shown that classical log gravity-- the theory with logarithmically relaxed boundary conditions --has finite asymptotic symmetry generators but is not chiral and hence may be dual at the quantum level to a logarithmic CFT. Moreover we show that log gravity contains chiral gravity within it as a decoupled charge superselection sector. We normally evaluate the Euclidean sum over geometries of chiral gravity and show that it gives precisely the holomorphic extremal CFT partition function. The modular invariance and integrality of the expansion coefficients of this partition function are consistent with the existence of an exact quantum theory of chiral gravity. We argue that the problem of quantizing chiral gravity is the holographic dual of the problem of constructing an extremal CFT, while quantizing log gravity is dual to the problem of constructing a logarithmic extremal CFT.

Alexander Maloney; Wei Song; Andrew Strominger

2009-03-26T23:59:59.000Z

254

OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY  

E-Print Network (OSTI)

one year's worth of hourly site & time-specific data including electrical demand PV and off-shore wind is based upon the analysis of one year worth of hourly data ­ 2010 -- including New York City's electrical demand, distributed PV generation, and off- shore wind generation. PV and wind generation data

Perez, Richard R.

255

The inverter is a major component of photovoltaic (PV) systems either autonomous or grid connected. It affects the  

E-Print Network (OSTI)

Solar Power ........................1 1.1 Global Installed PV Capacity ........................................................................................................................................18 2 Industry Trends, Photovoltaic and Concentrating Solar Power ...........................21 2.1 PV.3.4.5 Quality Assurance and Certification for Solar PV Installation.................46 2.3.5 References

Oregon, University of

256

Abstract--This paper focuses on reviewing grid connection of large offshore wind farms (OWFs) employing current state-of-  

E-Print Network (OSTI)

1 High Voltage DC Transmission 2 1.0 Introduction Interconnecting HVDC within an AC system requires on use of switching devices collectively referred to in the HVDC community as valves. Valves may be non. Fig. 1 There have been three types of devices for implementing HVDC converter circuits: mercury

Bak, Claus Leth

257

A Generalized Class of Stationary Frame-Current Controllers for Grid-Connected ACDC Converters  

E-Print Network (OSTI)

Within power systems, high-power pulsewidth-modulated ac-dc converters are used in flexible ac transmission systems controllers and for interfacing renewable energy sources to the grid. These converters traditionally ...

Hwang, J. George

258

Study of a Family of Buck-Boost Converter with Tapped Inductor for Grid-Connected Photovoltaic Systems  

Science Conference Proceedings (OSTI)

Among the photovoltaic (PV) systems, the ones interconnected to the electric system have presented a greater growth in the developed countries. In order to transform the generated DC energy in AC energy ready to be delivered to a grid, the concept of ... Keywords: Buck boost converter, ac module, tapped inductor

Juan C. Yris; Jorge H. Calleja; Abraham C. Sanchez; Leobardo H. Gonzalez

2010-09-01T23:59:59.000Z

259

Grid-connected Integrated Community Energy System. Preliminary report, Phase II, August 9--November 8, 1977. [Clark Univ. , Worcester  

SciTech Connect

Clark University in the New England area represents an attractive site for demonstration of cogeneration. In Phase I of the program, the team reported: that the system of choice is a diesel generator sized at about Clark's peak electric demand; it should burn No. 6 fuel oil; the system can run at nearly full capacity the year round, sell 40 percent of its output, and receive backup as needed from Massachusetts Electric Company; the system should deliver a rate of return of 15 to 20 percent; and there appear to be no institutional or environmental problems. An update on a number of issues that were incompletely resolved in the Phase I report is provided. In Section 2 additional documentation on institutional issues involved in the proposed demonstration plant is provided. In Section 3 a preliminary design analysis that clearly defines the choice of engine and provides revised operating data in light of additional load profile studies is provided. In particular, it is found that: a Sulzer No. 6-oil-burning 1405-kW diesel is the system of choice; the engine should be housed in a separate building in close proximity to the existing central boiler and steam distribution points; and as a result of detailed summer load studies, the engine as specified can be operated with higher capacity factors than anticipated in Phase I. In Section 4 a revised cost estimate using information developed in Sections 2 and 3 is given. No significant change in net cash flow was found, and there was an internal rate of return of 15 percent. The overall conclusion is therefore that, though some details have changed, the Clark demonstration project continues to appear highly attractive. (MCW)

1977-01-01T23:59:59.000Z

260

Very Large-Scale Deployment of Grid-Connected Solar Photovoltaics in the United States: Challenges and Opportunities; Preprint  

SciTech Connect

This paper analyzes the potential for solar photovoltaics (PV) to be deployed on a very large scale and provide a large fraction of a system's electricity. It explicitly examines how the hourly availability of PV interacts with the limited flexibility of traditional electricity generation plants. The authors found that, under high penetration levels and existing grid-operation procedures and rules, the system will have excess PV generation during certain periods of the year. This excess PV generation results in increased costs, which can increase dramatically when PV provides on the order of 10%-15% of total electricity demand in systems that are heavily dependent on inflexible baseload steam plants. Measures to increase penetration of PV are also discussed, including increased system flexibility, increased dispatchable load, and energy storage.

Denholm, P.; Margolis, R.

2006-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Study of Various Types of Faults with Neuro Fuzzy Controlled SSSC and STATCOM in Stabilization of Grid Connected Wind Generator  

Science Conference Proceedings (OSTI)

When wind farm is integrated to the power system, it has stability problem. Fixed speed induction generators require reactive power to maintain air gap flux. Reactive power equipments like Static Synchronous Compensator (STATCOM) and Static Synchronous ... Keywords: wind farm, grid, Induction generator (IG), STATCOM, SSSC, reactive power compensation, Neuro fuzzy controller (NFC), various types of faults

Rohi Kachroo; H. S. Dalvi

2012-11-01T23:59:59.000Z

262

Utility Scale Wind Turbines on a Grid Connected Island Mohit Dua, Anthony L. Rogers, James F. Manwell,  

E-Print Network (OSTI)

of such a crane to the island is not feasible. Valmont's Wind Energy Structure [2] addresses this problem in the definition of renewable energy precludes the development of wind energy in the state. Both Maine. The levelized cost of electricity purchased was calculated for the present case (no wind energy) and with wind

Massachusetts at Amherst, University of

263

Grid-Connected Inverter Anti-Islanding Test Results for General Electric Inverter-Based Interconnection Technology  

SciTech Connect

This report covers testing of General Electric-proposed anti-islanding schemes. The objectives were to: (1) Validate the effectiveness of the proposed anti-islanding schemes; (2) Conduct parametric evaluation of the schemes with respect to control settings and load conditions, including controller gains, load power levels, and load quality factors; and (3) Examine the ability of the distributed resource to ride through a low-voltage condition on the utility grid.

Ye, Z.; Dame, M.; Kroposki, B.

2005-01-01T23:59:59.000Z

264

Very Large-Scale Deployment of Grid-Connected Solar Photovoltaics in the United States: Challenges and Opportunities; Preprint  

DOE Green Energy (OSTI)

This paper analyzes the potential for solar photovoltaics (PV) to be deployed on a very large scale and provide a large fraction of a system's electricity. It explicitly examines how the hourly availability of PV interacts with the limited flexibility of traditional electricity generation plants. The authors found that, under high penetration levels and existing grid-operation procedures and rules, the system will have excess PV generation during certain periods of the year. This excess PV generation results in increased costs, which can increase dramatically when PV provides on the order of 10%-15% of total electricity demand in systems that are heavily dependent on inflexible baseload steam plants. Measures to increase penetration of PV are also discussed, including increased system flexibility, increased dispatchable load, and energy storage.

Denholm, P.; Margolis, R.

2006-04-01T23:59:59.000Z

265

Ultrahigh Energy Neutrals from Extreme Magnetic Flares  

E-Print Network (OSTI)

It is shown that bulk acceleration during reconnection of extremely strong magnetic fields near compact objects can accelerate ions to Lorentz factors of $\\sim 10^2 \\sigma^{3/5}$ under general conditions, where $\\sigma$, the magnetic energy per current-carrying proton rest energy, can approach $10^{15}$. For magnetar-type fields, neutrons and neutrinos can be generated at potentially detectable levels via hadron polarization. Ultrahigh energy photons can also be emitted and escorted from the high field region by Poynting flux.

David Eichler

2003-03-20T23:59:59.000Z

266

Extremal Quantum Correlations and Cryptographic Security  

E-Print Network (OSTI)

We investigate a fundamental property of device independent security in quantum cryptography by characterizing probability distributions which are necessarily independent of the measurement results of any eavesdropper. We show that probability distributions that are secure in this sense are exactly the extremal quantum probability distributions. This allows us to give a characterization of security in algebraic terms. We apply the method to common examples for two-party as well as multi-party setups and present a scheme for verifying security of probability distributions with two parties, two measurement settings, and two outcomes.

T. Franz; F. Furrer; R. F. Werner

2010-10-06T23:59:59.000Z

267

A Probability Model for Verifying Deterministic Forecasts of Extreme Events  

Science Conference Proceedings (OSTI)

This article proposes a method for verifying deterministic forecasts of rare, extreme events defined by exceedance above a high threshold. A probability model for the joint distribution of forecasts and observations, and based on extreme-value ...

Christopher A. T. Ferro

2007-10-01T23:59:59.000Z

268

The Extreme Benchmark Suite : measuring high-performance embedded systems  

E-Print Network (OSTI)

The Extreme Benchmark Suite (XBS) is designed to support performance measurement of highly parallel "extreme" processors, many of which are designed to replace custom hardware implementations. XBS is designed to avoid many ...

Gerding, Steven (Steven Bradley)

2005-01-01T23:59:59.000Z

269

Predicting Extreme Phases of the Indian Summer Monsoon  

Science Conference Proceedings (OSTI)

Extreme active and break phases of the Indian summer monsoon (ISM) often bring about devastating floods and severe draughts. Here it is shown that these extreme phases exhibit distinctive precursory circulation conditions in both the tropics and ...

Qinghua Ding; Bin Wang

2009-01-01T23:59:59.000Z

270

Charged black holes from near extremal black holes  

E-Print Network (OSTI)

We recover the properties of a wide class of far from extremal charged black branes from the properties of near extremal black branes, generalizing the results of Danielsson, Guijosa and Kruczenski.

Gilad Lifschytz

2004-05-06T23:59:59.000Z

271

Climatology Models for Extreme Hurricane Winds near the United States  

Science Conference Proceedings (OSTI)

The rarity of severe coastal hurricanes implies that empirical estimates of extreme wind speed return levels will be unreliable. Here climatology models derived from extreme value theory are estimated using data from the best-track [Hurricane ...

Thomas H. Jagger; James B. Elsner

2006-07-01T23:59:59.000Z

272

Impacts of Extreme Weather Events on Transmission and Distribution Systems  

Science Conference Proceedings (OSTI)

Extreme weather encompasses weather phenomena that are especially severe, unseasonal, or at the extremes of historical distributions. Extreme weather events, such as Hurricane Katrina, for example, have resulted in widespread damage to the power infrastructure and caused severe outages, which affected millions of customers. This report discusses the impacts of extreme weather events on power systems and synthesizes utility experiences, lessons learned from different storms occurring around the globe, and...

2010-11-30T23:59:59.000Z

273

High Strength Nickel Alloys for Extreme Oil and Gas Environments  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2013 TMS Annual Meeting & Exhibition. Symposium , Advanced Materials and Reservoir Engineering for Extreme Oil & Gas...

274

Corrosion of Mild Steel in Extreme Oil and Gas Environments  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2013 TMS Annual Meeting & Exhibition. Symposium , Advanced Materials and Reservoir Engineering for Extreme Oil & Gas...

275

New Texas wholesale power market weathers extreme cold ...  

U.S. Energy Information Administration (EIA)

... Monthly Quarterly Coal Report Monthly Energy Review Residential Energy ... Solar Energy in Brief. What's ... major test during the extreme ...

276

Constructive hidden nodes selection of extreme learning machine for regression  

Science Conference Proceedings (OSTI)

In this paper, we attempt to address the architectural design of ELM regressor by applying a constructive method on the basis of ELM algorithm. After the nonlinearities of ELM network are fixed by randomly generating the parameters, the network will ... Keywords: Constructive method, Error-minimized extreme learning machine, Extreme learning machine, Incremental extreme learning machine

Yuan Lan; Yeng Chai Soh; Guang-Bin Huang

2010-10-01T23:59:59.000Z

277

Extremely high frequency RF effects on electronics.  

SciTech Connect

The objective of this work was to understand the fundamental physics of extremely high frequency RF effects on electronics. To accomplish this objective, we produced models, conducted simulations, and performed measurements to identify the mechanisms of effects as frequency increases into the millimeter-wave regime. Our purpose was to answer the questions, 'What are the tradeoffs between coupling, transmission losses, and device responses as frequency increases?', and, 'How high in frequency do effects on electronic systems continue to occur?' Using full wave electromagnetics codes and a transmission-line/circuit code, we investigated how extremely high-frequency RF propagates on wires and printed circuit board traces. We investigated both field-to-wire coupling and direct illumination of printed circuit boards to determine the significant mechanisms for inducing currents at device terminals. We measured coupling to wires and attenuation along wires for comparison to the simulations, looking at plane-wave coupling as it launches modes onto single and multiconductor structures. We simulated the response of discrete and integrated circuit semiconductor devices to those high-frequency currents and voltages, using SGFramework, the open-source General-purpose Semiconductor Simulator (gss), and Sandia's Charon semiconductor device physics codes. This report documents our findings.

Loubriel, Guillermo Manuel; Vigliano, David; Coleman, Phillip Dale; Williams, Jeffery Thomas; Wouters, Gregg A.; Bacon, Larry Donald; Mar, Alan

2012-01-01T23:59:59.000Z

278

NETL: News Release - Data Acquisition Processor Fills Gap for Extreme  

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

9, 2010 9, 2010 Data Acquisition Processor Fills Gap for Extreme Down-hole Conditions Honeywell Develops Unique Reprogrammable High Temperature Device Morgantown, WV - Honeywell International, Inc. has developed a Reconfigurable Processor for Data Acquisition (RPDA) - a reprogrammable, multi-functional device that can operate at temperatures up to 250oC (482oF). The system is housed in a rugged package suitable for deep down-hole oil and natural gas logging and measurement-while-drilling (MWD) operations, and permanent wellbore installation applications. The project was funded through a cooperative agreement with the National Energy Technology Laboratory (NETL) under the Office of Fossil Energy's Oil and Natural Gas Program. Deep wells are generally defined as having a true vertical depth (TVD) greater than 15,000 feet, while ultra-deep wells are deeper than 25,000 feet TVD. Potential recoverable natural gas and oil resources from deep formations are significant, and deep wells tend to produce at much higher daily rates than conventional shallower wells.

279

Radiance Temperature  

Science Conference Proceedings (OSTI)

... Temperature using Detectors Calibrated for Absolute Spectral Power Response, HW ... A Third Generation Water Bath Based Blackbody Source, JB ...

2013-06-27T23:59:59.000Z

280

Deinococcus geothermalis: The Pool of Extreme Radiation Resistance Genes Shrinks  

SciTech Connect

Bacteria of the genus Deinococcus are extremely resistant to ionizing radiation (IR), ultraviolet light (UV) and desiccation. The mesophile Deinococcus radiodurans was the first member of this group whose genome was completely sequenced. Analysis of the genome sequence of D. radiodurans, however, failed to identify unique DNA repair systems. To further delineate the genes underlying the resistance phenotypes, we report the whole-genome sequence of a second Deinococcus species, the thermophile Deinococcus geothermalis, which at itsoptimal growth temperature is as resistant to IR, UV and desiccation as D. radiodurans, and a comparative analysis of the two Deinococcus genomes. Many D. radiodurans genes previously implicated in resistance, but for which no sensitive phenotype was observed upon disruption, are absent in D. geothermalis. In contrast, most D. radiodurans genes whose mutants displayed a radiation-sensitive phenotype in D. radiodurans are conserved in D. geothermalis. Supporting the existence of a Deinococcus radiation response regulon, a common palindromic DNA motif was identified in a conserved set of genes associated with resistance, and a dedicated transcriptional regulator was predicted. We present the case that these two species evolved essentially the same diverse set of gene families, and that the extreme stress-resistance phenotypes of the Deinococcus lineage emerged progressively by amassing cell-cleaning systems from different sources, but not by acquisition of novel DNA repair systems. Our reconstruction of the genomic evolution of the Deinococcus-Thermus phylum indicates that the corresponding set of enzymes proliferated mainly in the common ancestor of Deinococcus. Results of the comparative analysis weaken the arguments for a role of higher-order chromosome alignment structures in resistance; more clearly define and substantially revise downward the number of uncharacterized genes that might participate in DNA repair and contribute to resistance; and strengthen the case for a role in survival of systems involved in manganese and iron homeostasis.

Makarova, Kira S.; Omelchenko, Marina V.; Gaidamakova, Elena K.; Matrosova, Vera Y.; Vasilenko, Alexander; Zhai, Min; Lapidus, Alla; Copeland, Alex; Kim, Edwin; Land, Miriam; Mavrommatis, Konstantinos; Pitluck, Samuel; Richardson, Paul M.; Detter, Chris; Brettin, Thomas; Saunders, Elizabeth; Lai, Barry; Ravel, Bruce; Kemner, Kenneth M.; Wolf, Yuri I.; Sorokin, Alexander; Gerasimova, Anna V.; Gelfand, Mikhail S.; Fredrickson, James K.; Koonin, Eugene V.; Daly, Michael J.

2007-07-24T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Left-Wing Extremism: The Current Threat  

SciTech Connect

Left-wing extremism is ''alive and well'' both in the US and internationally. Although the current domestic terrorist threat within the U. S. is focused on right-wing extremists, left-wing extremists are also active and have several objectives. Leftist extremists also pose an espionage threat to U.S. interests. While the threat to the U.S. government from leftist extremists has decreased in the past decade, it has not disappeared. There are individuals and organizations within the U.S. who maintain the same ideology that resulted in the growth of left-wing terrorism in this country in the 1970s and 1980s. Some of the leaders from that era are still communicating from Cuba with their followers in the U.S., and new leaders and groups are emerging.

Karl A. Seger

2001-04-30T23:59:59.000Z

282

Extreme-UV electrical discharge source  

DOE Patents (OSTI)

An extreme ultraviolet and soft x-ray radiation electric capillary discharge source that includes a boron nitride housing defining a capillary bore that is positioned between two electrodes one of which is connected to a source of electric potential can generate a high EUV and soft x-ray radiation flux from the capillary bore outlet with minimal debris. The electrode that is positioned adjacent the capillary bore outlet is typically grounded. Pyrolytic boron nitride, highly oriented pyrolytic boron nitride, and cubic boron nitride are particularly suited. The boron nitride capillary bore can be configured as an insert that is encased in an exterior housing that is constructed of a thermally conductive material. Positioning the ground electrode sufficiently close to the capillary bore outlet also reduces bore erosion.

Fornaciari, Neal R. (Tracey, CA); Nygren, Richard E. (Los Ranchos de Albuquerque, NM); Ulrickson, Michael A. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

283

Holography at an Extremal De Sitter Horizon  

E-Print Network (OSTI)

Rotating maximal black holes in four-dimensional de Sitter space, for which the outer event horizon coincides with the cosmological horizon, have an infinite near-horizon region described by the rotating Nariai metric. We show that the asymptotic symmetry group at the spacelike future boundary of the near-horizon region contains a Virasoro algebra with a real, positive central charge. This is evidence that quantum gravity in a rotating Nariai background is dual to a two-dimensional Euclidean conformal field theory. These results are related to the Kerr/CFT correspondence for extremal black holes, but have two key differences: one of the black hole event horizons has been traded for the cosmological horizon, and the near-horizon geometry is a fiber over dS_2 rather than AdS_2.

Dionysios Anninos; Thomas Hartman

2009-10-23T23:59:59.000Z

284

Holography at an Extremal De Sitter Horizon  

E-Print Network (OSTI)

Rotating maximal black holes in four-dimensional de Sitter space, for which the outer event horizon coincides with the cosmological horizon, have an infinite near-horizon region described by the rotating Nariai metric. We show that the asymptotic symmetry group at the spacelike future boundary of the near-horizon region contains a Virasoro algebra with a real, positive central charge. This is evidence that quantum gravity in a rotating Nariai background is dual to a two-dimensional Euclidean conformal field theory. These results are related to the Kerr/CFT correspondence for extremal black holes, but have two key differences: one of the black hole event horizons has been traded for the cosmological horizon, and the near-horizon geometry is a fiber over dS_2 rather than AdS_2.

Anninos, Dionysios

2009-01-01T23:59:59.000Z

285

Extreme overbalance perforating improves well performance  

Science Conference Proceedings (OSTI)

The application of extreme overbalance perforating, by Oryx Energy Co., is consistently outperforming the unpredictable, tubing-conveyed, underbalance perforating method which is generally accepted as the industry standard. Successful results reported from more than 60 Oryx Energy wells, applying this technology, support this claim. Oryx began this project in 1990 to address the less-than-predictable performance of underbalanced perforating. The goal was to improve the initial completion efficiency, translating it into higher profits resulting from earlier product sales. This article presents the concept, mechanics, procedures, potential applications and results of perforating using overpressured well bores. The procedure can also be used in wells with existing perforations if an overpressured surge is used. This article highlights some of the case histories that have used these techniques.

Dees, J.M.; Handren, P.J. [Oryx Energy Co., Dallas, TX (United States)

1994-01-01T23:59:59.000Z

286

A Road Map to Extreme High Vacuum  

DOE Green Energy (OSTI)

Ultimate pressure of a well-designed vacuum system very much depends on pretreatments, processing and the procedures [1,2]. Until now much attention has been paid in minimizing hydrogen outgassing from the chamber material. However, procedures and processing deserves further scrutiny than hitherto given so far. For reducing the gas load, high sensitivity helium leak detection techniques with sensitivities better than 1 10-12 Torr l/sec need to be used. Effects that are induced by vacuum instrumentation need to be reduced in order to obtain accurate pressure measurements. This presentation will discuss: clean assembly procedures, metal sponges for cryosorption pumping of hydrogen to extreme high vacuum, low cost surface diffusion barriers for reducing the hydrogen gas load, cascade pumping, sensitive helium leak detection techniques and the use of modified extractor and residual gas analyzers. Further, alternative back up pumping systems based on active NEGs [3] for turbo molecular pumps will be presented.

Ganapati Rao Myneni

2007-06-20T23:59:59.000Z

287

SPLIDHOM: A Method for Homogenization of Daily Temperature Observations  

Science Conference Proceedings (OSTI)

One major concern of climate change is the possible rise of temperature extreme events, in terms of occurrence and intensity. To study this phenomenon, reliable daily series are required, for instance to compute daily-based indices: high-order ...

Olivier Mestre; Christine Gruber; Clmentine Prieur; Henri Caussinus; Sylvie Jourdain

2011-11-01T23:59:59.000Z

288

Adaptive extremal optimization by detrended fluctuation analysis  

SciTech Connect

Global optimization is one of the key challenges in computational physics as several problems, e.g. protein structure prediction, the low-energy landscape of atomic clusters, detection of community structures in networks, or model-parameter fitting can be formulated as global optimization problems. Extremal optimization (EO) has become in recent years one particular, successful approach to the global optimization problem. As with almost all other global optimization approaches, EO is driven by an internal dynamics that depends crucially on one or more parameters. Recently, the existence of an optimal scheme for this internal parameter of EO was proven, so as to maximize the performance of the algorithm. However, this proof was not constructive, that is, one cannot use it to deduce the optimal parameter itself a priori. In this study we analyze the dynamics of EO for a test problem (spin glasses). Based on the results we propose an online measure of the performance of EO and a way to use this insight to reformulate the EO algorithm in order to construct optimal values of the internal parameter online without any input by the user. This approach will ultimately allow us to make EO parameter free and thus its application in general global optimization problems much more efficient.

Hamacher, K. [Bioinformatics and Theoretical Biology Group, Technical University Darmstadt, Schnittspahnstr. 10, 64287 Darmstadt (Germany)], E-mail: hamacher@bio.tu-darmstadt.de

2007-12-10T23:59:59.000Z

289

Reflective masks for extreme ultraviolet lithography  

SciTech Connect

Extreme ultraviolet lithographic masks are made by patterning multilayer reflective coatings with high normal incidence reflectivity. Masks can be patterned by depositing a patterned absorber layer above the coating or by etching the pattern directly into the coating itself. Electromagnetic simulations showed that absorber-overlayer masks have superior imaging characteristics over etched masks (less sensitive to incident angles and pattern profiles). In an EUVL absorber overlayer mask, defects can occur in the mask substrate, reflective coating, and absorber pattern. Electromagnetic simulations showed that substrate defects cause the most severe image degradation. A printability study of substrate defects for absorber overlayer masks showed that printability of 25 nm high substrate defects are comparable to defects in optical lithography. Simulations also indicated that the manner in which the defects are covered by multilayer reflective coatings can affect printability. Coverage profiles that result in large lateral spreading of defect geometries amplify the printability of the defects by increasing their effective sizes. Coverage profiles of Mo/Si coatings deposited above defects were studied by atomic force microscopy and TEM. Results showed that lateral spread of defect geometry is proportional to height. Undercut at defect also increases the lateral spread. Reductions in defect heights were observed for 0.15 {mu}m wide defect lines. A long-term study of Mo/Si coating reflectivity revealed that Mo/Si coatings with Mo as the top layer suffer significant reductions in reflectivity over time due to oxidation.

Nguyen, Khanh Bao

1994-05-01T23:59:59.000Z

290

Mesoscale predictability of an extreme warm-season precipitation event  

E-Print Network (OSTI)

During the period of June 29 through July 6, 2002, an extreme precipitation event occurred over Texas, resulting in catastrophic flooding. Operational forecasts performed poorly, neither predicting the copious amounts of rain nor its longevity. The Penn State University/NCAR Mesoscale Model version 5 (MM5) was used to conduct predictability experiments, which follow closely to the research conducted by Zhang et al. A control simulation initialized at 00Z 1 July is established over a 30-km grid. First, practical predictability experiments are performed by exploring the impacts due to different lead-times, resolution dependence, and different physics parameterizations. Second, intrinsic predictability is investigated by inducing a random temperature perturbation in the initial conditions, followed by numerous simulations with various perturbed initializations. Similar results to those found by Zhang et al. were discovered here: the prominent initial error growth is associated with moist processes leading to convection. Eventually these errors grow from the convective scale to sub-synoptic scale, essentially below 1000 kilometers. This indicates that as the forecast time extends further beyond initialization, the resulting errors will impact forecasts of larger-scale features such as differences in the positioning and intensity of positive PV anomalies and distribution of precipitation from the control simulation.

Odins, Andrew Michael

2004-12-01T23:59:59.000Z

291

Kinetic Simulations of Fusion Energy Dynamics at the Extreme...  

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

Kinetic Simulations of Fusion Energy Dynamics at the Extreme Scale PI Name: William Tang PI Email: tang@pppl.gov Institution: Princeton Plasma Physics Laboratory Allocation...

292

Professor and Director of the Fusion Science Center of Extreme...  

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

Professor and Director of the Fusion Science Center of Extreme States of Matter and Fast Ignition, University of Rochester | National Nuclear Security Administration Our Mission...

293

Regularity of the extremal solutions in a Gelfand system problem  

E-Print Network (OSTI)

We examine a Gelfand type system and show the extremal solutions are bounded provided we are close enough to the scalar case.

Cowan, Craig

2010-01-01T23:59:59.000Z

294

Extreme Wind Speed Data Sets: Texas Tech/CSU  

Science Conference Proceedings (OSTI)

... B-indicates a beacon tower exposure. ... 93839 Memphis TN 4 3 1968 123 107 WIND SPEEDS GREATER ... [ SED Home | Extreme Winds Home | Data ...

2013-09-27T23:59:59.000Z

295

ORNL analysis predicts losses from extreme weather damage could...  

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

ORNL analysis predicts losses from extreme weather damage could double by 2050 Researcher tackles unprecedented county-by-county economic loss forecast Research in impacts,...

296

Special Report: Graphics Processing Units Speed Results in Extreme...  

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

Special Report: Graphics Processing Units Speed Results in Extreme-Scale Supercomputers American Fusion News Category: U.S. Universities Link: Special Report: Graphics Processing...

297

Climate, extreme heat, and electricity demand in California  

E-Print Network (OSTI)

projected extreme heat and peak demand for electricity areadequately kept up with peak demand, and electricity supplytrend in aggregate peak demand in California is expected to

Miller, N.L.

2008-01-01T23:59:59.000Z

298

LDRD symposium focuses on materials in extremes, big data, and...  

National Nuclear Security Administration (NNSA)

symposium focuses on materials in extremes, big data, and energy use impacts | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation...

299

Gas flow behavior in extremely low permeability rock  

Science Conference Proceedings (OSTI)

This paper presents a numerical model and modeling study of gas flow through extremely low permeability unconventional reservoirs. In contrast to conventional reservoirs

Yu-Shu Wu; Cong Wang

2012-01-01T23:59:59.000Z

300

Extreme Chromatography: Faster, Hotter, SmallerChapter 3 Chiral Separations  

Science Conference Proceedings (OSTI)

Extreme Chromatography: Faster, Hotter, Smaller Chapter 3 Chiral Separations Methods and Analyses eChapters Methods - Analyses Books Downloadable pdf of Chapter 3 Chiral Separations from ...

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


301

Preservation of an extreme transient geotherm in the Raft River...  

Open Energy Info (EERE)

transient geotherm in the Raft River detachment shear zone Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Preservation of an extreme transient...

302

A New HadGEM3-A-Based System for Attribution of Weather- and Climate-Related Extreme Events  

Science Conference Proceedings (OSTI)

A new system for attribution of weather and climate extreme events has been developed based on the atmospheric component of the latest Hadley Centre model. The model is run with either observational data of sea surface temperature and sea ice or ...

Nikolaos Christidis; Peter A. Stott; Adam A. Scaife; Alberto Arribas; Gareth S. Jones; Dan Copsey; Jeff R. Knight; Warren J. Tennant

2013-05-01T23:59:59.000Z

303

Photon Sciences Worksheet 05-02 Extreme Conditions Extreme Environments Diff.  

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

5-02 Extreme Conditions 5-02 Extreme Conditions Extreme Environments Diff. Resources Available - BE Mid 2012 Mid 2014 Mid 2016 Beamline X-ray Source Total Total Total NSLS 1.16 1.16 0 X17B2 Wiggler 0.33 0.33 0 X17B3 Wiggler 0.33 0.33 0 X17C Wiggler 0.5 0.5 0 APS 5.4 6.1 6.1 3-ID Bend 0 0 0 11-ID-B Undulator 0.1 0.1 0.1 11-ID-C Undulator 0.1 0.1 0.1 13-BM-D a Bend 0.4 0.4 0.4 CAT 13-ID-D a Undulator 0.3 1 1 CAT 16-BM-B b Bend 1 1 1 CAT 16-BM-D b Bend 1 1 1 CAT 16-ID-B b Undulator 1 1 1 CAT 16-ID-D Undulator 1 1 1 CAT 13-BM-C Bend 0.5 0.5 0.5 CAT ALS 1 1 1 12.2.2 Superbend 1 1 1 SSRL 0 0 0 NSLS-II 0 0 0.3 XPD c Dampingwiggler 0 0 0.3 Project Funded and under construction in NSLS-II Project - Available 2015 4DE Wiggler 0 0 0 TEC Undulator 0 0 0 Totals 7.56 8.26 7.4 Diamond Anvil Cell (DAC) only Large Volume Press (LVP) only DAC & LVP BE - Beamline equivalent - 1 BE is a station running the full operating schedule of the facility. Typically 5000 Hrs/yr

304

Odds Ratio Forecasts Increase Precautionary Action for Extreme Weather Events  

Science Conference Proceedings (OSTI)

What is the best way to communicate the risk of rare but extreme weather to the public? One suggestion is to communicate the relative risk of extreme weather in the form of odds ratios; but, to the authors knowledge, this suggestion has never ...

Jared LeClerc; Susan Joslyn

2012-10-01T23:59:59.000Z

305

Free Extreme Values Gerard Ben Arous and Dan Virgil Voiculescu  

E-Print Network (OSTI)

Free Extreme Values Gerard Ben Arous and Dan Virgil Voiculescu New York University and University at Berkeley Berkeley, CA 94720-3840 E-mail:dvv@math.berkeley.edu Abstract: Free probability analogues- sification of freely max-stable laws and their domains of attraction, using "free extremal convolutions

Ben Arous, Gérard

306

Extreme water state produced by underwater wire-array electrical explosion  

SciTech Connect

The generation of an extreme water state (130 GPa, 5000 K, and 3.4 g/cm{sup 3}) which is characterized as dense plasma at the axis of a converging shock wave is reported. A 4 kJ pulse generator was used to explode a 40 Cu-wire array, generating a cylindrical shock wave. The measured shock wave trajectory and energy deposited into the water flow were used in hydrodynamic simulations coupled with the equation of state to determine the water parameters. The temperature estimated using the emission data of water in the vicinity of the implosion axis agrees with the simulation results, indicating shock wave symmetry in such extreme conditions.

Fedotov-Gefen, A.; Efimov, S.; Gilburd, L.; Gleizer, S.; Bazalitsky, G.; Gurovich, V. Tz.; Krasik, Ya. E. [Department of Physics, Technion, 32000 Haifa (Israel)

2010-05-31T23:59:59.000Z

307

TRENDS: TEMPERATURE  

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

Historical Isotopic Temperature Record from the Vostok Ice Core Historical Isotopic Temperature Record from the Vostok Ice Core Graphics Digital Data J.R. Petit, D. Raynaud, and C. Lorius Laboratoire de Glaciogie et Géophysique de l'Environnement, CNRS, Saint Martin d'Hères Cedex, France J. Jouzel and G. Delaygue Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA/CNRS, L'Orme des Merisiers, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France N.I. Barkov Arctic and Antarctic Research Institute, Beringa Street 38, 199397 St. Petersburg, Russia V.M. Kotlyakov Institute of Geography, Staromonetny, per 29, Moscow 109017, Russia DOI: 10.3334/CDIAC/cli.006 Period of Record 420,000 years BP-present Methods Because isotopic fractions of the heavier oxygen-18 (18O) and deuterium (D) in snowfall are temperature-dependent and a strong spatial correlation

308

Revisiting the Statewide Climate Extremes for the United States: Evaluating Existing Extremes, Archived Data, and New Observations  

Science Conference Proceedings (OSTI)

New all-time extreme climate records have been set in several states over the past few years. These records highlighted a need to review the existing statewide climate extremes tables maintained by the NOAA National Climatic Data Center (NCDC). Also, ...

Karsten A. Shein; Dennis P. Todey; F. Adnan Akyuz; James R. Angel; Timothy M. Kearns; James L. Zdrojewski

2013-03-01T23:59:59.000Z

309

Observed Trends in Indices of Daily Temperature Extremes in South America 19602000  

Science Conference Proceedings (OSTI)

A workshop on enhancing climate change indices in South America was held in Macei, Brazil, in August 2004. Scientists from eight southern countries brought daily climatological data from their region for a meticulous assessment of data quality ...

L. A. Vincent; T. C. Peterson; V. R. Barros; M. B. Marino; M. Rusticucci; G. Carrasco; E. Ramirez; L. M. Alves; T. Ambrizzi; M. A. Berlato; A. M. Grimm; J. A. Marengo; L. Molion; D. F. Moncunill; E. Rebello; Y. M. T. Anunciao; J. Quintana; J. L. Santos; J. Baez; G. Coronel; J. Garcia; I. Trebejo; M. Bidegain; M. R. Haylock; D. Karoly

2005-12-01T23:59:59.000Z

310

Observations of upper-extremity skin temperature and corresponding overall-body thermal sensations and comfort  

E-Print Network (OSTI)

body heating and cooling, Journal of Thermal Biology 2004;after local cooling was supplied, overall thermal comfortstate, thermal sensation, and comfort in the cooling region.

Wang, Danni; Zhang, H. Ph.D; Arens, Edward A; Huizenga, C

2007-01-01T23:59:59.000Z

311

Microsoft Word - Extreme Electron Correlation in the Strange Metal Phase of High  

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

October 2011 October 2011 An exemplary fit of ARPES data using the ECFL theory. In this fit, the very wide energy of the data are fit including the rising background, thanks to the "caparison factor" of the ECFL theory. Extreme Electron Correlation in the Strange Metal Phase of High- temperature Superconductors High-temperature superconductors are known for their "strange metal phase," which presents a rich but strange set of phenomena that challenge understanding. A requirement for building a correct theoretical model of high temperature superconductors is that this strange metallic phase be explained first. One of the defining characteristics of the strange metal phase is the anomalous line shapes measured by angle resolved photoelectron

312

Temperature measurements of shock-compressed deuterium  

DOE Green Energy (OSTI)

The authors measured the temperatures of single and double-shocked D{sub 2} and H{sub 2} up to 85 GPa (0.85 Mbar) and 5,200 K. While single shock temperatures, at pressures to 23 GPa, agree well with previous models, the double shock temperatures are as much as 40% lower than predicted. This is believed to be caused by molecular dissociation, and a new model of the hydrogen EOS at extreme conditions has been developed which correctly predicts their observations. These data and model have important implications for programs which use condensed-phase hydrogen in implosion systems.

Holmes, N.C.; Ross, M.; Nellis, W.J.

1994-11-01T23:59:59.000Z

313

Former Assistant Secretary Shares Experiences Leading EM: 'Extremely  

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

'Extremely Rewarding' Former Assistant Secretary Shares Experiences Leading EM: 'Extremely Rewarding' September 30, 2013 - 10:25am Addthis Dr. Inés Triay said serving as EM Assistant Secretary was challenging and extremely rewarding. Dr. Inés Triay said serving as EM Assistant Secretary was challenging and extremely rewarding. In an occasional EM Update series, we feature interviews with former EM Assistant Secretaries to reflect on their achievements and challenges in the Cold War cleanup and to discuss endeavors in life after EM. Before serving as EM's Assistant Secretary in 2009 - leading the largest, most diverse and most technically complex environmental cleanup program in the world - Dr. Inés Triay was the cleanup program's Principal Deputy Assistant Secretary, Chief Operations Officer, Deputy

314

'Extreme Makeover: Home Edition' Builds Efficiently | Department of Energy  

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

'Extreme Makeover: Home Edition' Builds Efficiently 'Extreme Makeover: Home Edition' Builds Efficiently 'Extreme Makeover: Home Edition' Builds Efficiently February 12, 2010 - 9:30am Addthis Joshua DeLung You may recall this post on Energy Empowers, which previewed an upcoming episode of ABC's "Extreme Makeover: Home Edition" where the U.S. Department of Energy collaborated with builders to incorporate energy-efficiency and renewable energy technologies at The Fishing School, one of two such collaborative projects in an episode that was set to air during a special 2010 Valentine's Day episode, featuring filmmaker Tyler Perry as a guest. The episode aired and told the story of energy efficiency changing the lives of some very special mentors and of America's youth. Additionally, Clean Skies News covered the builds. Here's its first video

315

Extreme thermophiles: moving beyond single-enzyme biocatalysis  

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

COCHE-51; NO. OF PAGES 10 COCHE-51; NO. OF PAGES 10 Please cite this article in press as: Frock AD, Kelly RM. Extreme thermophiles: moving beyond single-enzyme biocatalysis, Curr Opin Chem Eng (2012), http://dx.doi.org/10.1016/ j.coche.2012.07.003 Available online at www.sciencedirect.com Extreme thermophiles: moving beyond single-enzyme biocatalysis Andrew D Frock and Robert M Kelly Extremely thermophilic microorganisms have been sources of thermostable and thermoactive enzymes for over 30 years. However, information and insights gained from genome sequences, in conjunction with new tools for molecular genetics, have opened up exciting new possibilities for biotechnological opportunities based on extreme thermophiles that go beyond single-step biotransformations. Although the pace for discovering novel microorganisms has slowed over

316

Atomistic simulations of chemomechanical processes in nanomaterials under extreme environments  

E-Print Network (OSTI)

The complex chemomechanical behavior of nanomaterials under extreme thermal and mechanical environments is of interest for a range of basic science and defense applications. By the limitation of experimental approaches for ...

Cho, Hansohl

2009-01-01T23:59:59.000Z

317

The 1993 Midwest Extreme Precipitation in Historical and Probabilistic Perspective  

Science Conference Proceedings (OSTI)

Extreme rainfall amounts that resulted in severe flooding during the spring and summer of 1993 along the Missouri and Mississippi Rivers are examined from a historical and probabilistic viewpoint. Long-term average precipitation amounts and the ...

Nathaniel B. Guttman; J. R. M. Hosking; James R. Wallis

1994-10-01T23:59:59.000Z

318

SUMMARY OF REVISED TORNADO, HURRICANE AND EXTREME STRAIGHT WIND...  

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

@ E A R T H L I N K . N E T SUMMARY OF REVISED TORNADO, HURRICANE AND EXTREME STRAIGHT WIND CHARACTERISTICS AT NUCLEAR FACILITY SITES Categorization of Natural Hazard Phenomenon...

319

Characterizing and Modeling Temporal and Spatial Trends in Rainfall Extremes  

Science Conference Proceedings (OSTI)

A hierarchical spatial model for daily rainfall extremes that characterizes their temporal variation due to interannual climatic forcing as well as their spatial pattern is proposed. The model treats the parameters of at-site probability ...

Santosh K. Aryal; Bryson C. Bates; Edward P. Campbell; Yun Li; Mark J. Palmer; Neil R. Viney

2009-02-01T23:59:59.000Z

320

Monitoring and Understanding Trends in Extreme Storms: State of Knowledge  

Science Conference Proceedings (OSTI)

The state of knowledge regarding trends and an understanding of their causes is presented for a specific subset of extreme weather and climate types. For severe convective storms (tornadoes, hailstorms, and severe thunderstorms), differences in time and ...

Kenneth E. Kunkel; Thomas R. Karl; Harold Brooks; James Kossin; Jay H. Lawrimore; Derek Arndt; Lance Bosart; David Changnon; Susan L. Cutter; Nolan Doesken; Kerry Emanuel; Pavel Ya. Groisman; Richard W. Katz; Thomas Knutson; James O'Brien; Christopher J. Paciorek; Thomas C. Peterson; Kelly Redmond; David Robinson; Jeff Trapp; Russell Vose; Scott Weaver; Michael Wehner; Klaus Wolter; Donald Wuebbles

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Long-Term Statistics and Extreme Waves of Sea Storms  

Science Conference Proceedings (OSTI)

A stochastic model of sea storms for describing long-term statistics of extreme wave events is presented. The formulation generalizes Boccottis equivalent triangular storm model by describing an actual storm history in the form of a generic ...

Francesco Fedele; Felice Arena

2010-05-01T23:59:59.000Z

322

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

323

Explaining Extreme Events of 2011 from a Climate Perspective  

Science Conference Proceedings (OSTI)

Attribution of extreme events shortly after their occurrence stretches the current state-of-theart of climate change assessment. To help foster the growth of this science, this article illustrates some approaches to answering questions about the role of ...

Thomas C. Peterson; Peter A. Stott; Stephanie Herring

2012-07-01T23:59:59.000Z

324

Regional Extreme Monthly Precipitation Simulated by NARCCAP RCMs  

Science Conference Proceedings (OSTI)

This paper analyzes the ability of the North American Regional Climate Change Assessment Program (NARCCAP) ensemble of regional climate models to simulate extreme monthly precipitation and its supporting circulation for regions of North America, ...

William J. Gutowski Jr.; Raymond W. Arritt; Sho Kawazoe; David M. Flory; Eugene S. Takle; Sbastien Biner; Daniel Caya; Richard G. Jones; Ren Laprise; L. Ruby Leung; Linda O. Mearns; Wilfran Moufouma-Okia; Ana M. B. Nunes; Yun Qian; John O. Roads; Lisa C. Sloan; Mark A. Snyder

2010-12-01T23:59:59.000Z

325

Mesoscale Predictability of an Extreme Warm-Season Precipitation Event  

Science Conference Proceedings (OSTI)

A mesoscale model is used to investigate the mesoscale predictability of an extreme precipitation event over central Texas on 29 June 2002 that lasted through 7 July 2002. Both the intrinsic and practical aspects of warm-season predictability, ...

Fuqing Zhang; Andrew M. Odins; John W. Nielsen-Gammon

2006-04-01T23:59:59.000Z

326

A Climatological Measure of Extreme Snowdrift Loading on Building Roofs  

Science Conference Proceedings (OSTI)

A physical model of snow transport and deposition is used in combination with historical climatological data to derive a climatological measure of extreme snowdrift loads on building roofs. The snowdrift metric used relies on hourly wind speed, ...

Arthur T. DeGaetano; Michael J. O'Rourke

2004-01-01T23:59:59.000Z

327

Global Estimates of Extreme Wind Speed and Wave Height  

Science Conference Proceedings (OSTI)

A long-term dataset of satellite altimeter measurements of significant wave height and wind speed, spanning 23 years, is analyzed to determine extreme values corresponding to a 100-yr return period. The analysis considers the suitability of both ...

J. Vinoth; I. R. Young

2011-03-01T23:59:59.000Z

328

Observations of Gamma-Ray Bursts at Extreme Energies  

E-Print Network (OSTI)

of Gamma-Ray Bursts . . . . . . . . . . . . . Redshift-CRUZ OBSERVATIONS OF GAMMA-RAY BURSTS AT EXTREME ENERGIES ADedication xix Acknowledgments xx 1 Gamma-Ray Bursts 1.1

Aune, Taylor

2012-01-01T23:59:59.000Z

329

Extreme Flood Response: The June 2008 Flooding in Iowa  

Science Conference Proceedings (OSTI)

We examine the hydroclimatology, hydrometeorology and hydrology of extreme floods through analyses that center on the June 2008 flooding in Iowa. The most striking feature of the June 2008 flooding was the flood peak of the Cedar River at Cedar ...

James A. Smith; Mary Lynn Baeck; Gabriele Villarini; Daniel B. Wright; Witold Krajewski

330

Canadian RCM Projected Changes to Extreme Precipitation Characteristics over Canada  

Science Conference Proceedings (OSTI)

Changes to the intensity and frequency of hydroclimatic extremes can have significant impacts on sectors associated with water resources, and therefore it is relevant to assess their vulnerabilities in a changing climate. This study focuses on the ...

B. Mladjic; L. Sushama; M. N. Khaliq; R. Laprise; D. Caya; R. Roy

2011-05-01T23:59:59.000Z

331

Particle production in matter at extreme conditions  

E-Print Network (OSTI)

We study particle production and its density evolution and equilibration in hot dense medium. One type of hot dense medium, which we study, is hadronic gas produced at quark gluon plasma hadronization in heavy ions collisions in SPS, RHIC and LHC experiments. We study hadron production at non-equilibrium quark gluon plasma hadronization and their evolution in thermal hadronic gas phase. We use non-equilibrium hadronization as the initial condition in the study of hadronic kinetic phase. During this time period some hadronic resonances can be produced in lighter hadrons fusion. Production of resonances is dominant over decay if there is non-equilibrium excess of decay products. Within this model we explain apparently contradictory experimental results reported in RHIC experiments: Sigma(1385) yield is enhanced while Lambda(1520) yield is suppressed compared to the statistical hadronization model expectation obtained without kinetic phase. We also predict Delta(1232) enhancement. The second type of plasma medium we consider is the relativistic electron positron photon plasma drop. This plasma is expected to be produced in decay of supercritical field created in ultrashort laser pulse. We study at what conditions this plasma drop is opaque for photons and therefore may reach thermal and chemical equilibrium. Further we consider muon and pion production in this plasma also as a diagnostic tool. Finally all these theoretical developments can be applied to begin a study of particles evolution in early universe in temperatures domain from QGP hadronization (160 MeV) to nucleosynthesis (0.1 MeV). The first results on pion equilibration are presented here.

Inga Kuznetsova

2009-09-02T23:59:59.000Z

332

Negative ion source with low temperature transverse divergence optical system  

DOE Patents (OSTI)

A negative ion source is provided which has extremely low transverse divergence as a result of a unique ion focusing system in which the focal line of an ion beam emanating from an elongated, concave converter surface is outside of the ion exit slit of the source and the path of the exiting ions. The beam source operates with a minimum ion temperature which makes possible a sharply focused (extremely low transverse divergence) ribbon like negative ion beam.

Whealton, J.H.; Stirling, W.L.

1985-03-04T23:59:59.000Z

333

The development of an index for the proximal upper extremity  

E-Print Network (OSTI)

Analysis techniques specific to the proximal upper extremity have historically been overlooked in the field of ergonomics. This research effort provides a methodology that will allow the ergonomics practitioner to analyze a job and predict whether or not that job exposes workers to increased risk of proximal upper extremity disorders. Literature from the fields of physiology, biomechanics, and epidemiology was assimilated in order to understand the theories of pathogenesis of disorders in the rotator cuff and to identify the risk factors associated with proximal upper extremity disorders. A retrospective epidemiological study was conducted to identify job task variables that may contribute to the occurrence of proximal upper extremity disorders. Two proximal upper extremity constructs were proposed: a fatigue-based model and a compressive load-based model. The constructs incorporated lessons learned from the literature and results from the epidemiological study. Validation of the models was performed using data from the epidemiological study. It was determined that the fatigue-based model was a good predictor of proximal upper extremity disorders.

Walline, Erin Kurusz

2003-05-01T23:59:59.000Z

334

Extremal Horizons with Reduced Symmetry: Hyperscaling Violation, Stripes, and a Classification for the Homogeneous Case  

E-Print Network (OSTI)

Classifying the zero-temperature ground states of quantum field theories with finite charge density is a very interesting problem. Via holography, this problem is mapped to the classification of extremal charged black brane geometries with anti-de Sitter asymptotics. In a recent paper [1], we proposed a Bianchi classification of the extremal near-horizon geometries in five dimensions, in the case where they are homogeneous but, in general, anisotropic. Here, we extend our study in two directions: we show that Bianchi attractors can lead to new phases, and generalize the classification of homogeneous phases in a way suggested by holography. In the first direction, we show that hyperscaling violation can naturally be incorporated into the Bianchi horizons. We also find analytical examples of "striped" horizons. In the second direction, we propose a more complete classification of homogeneous horizon geometries where the natural mathematics involves real four-algebras with three dimensional sub-algebras. This gives rise to a richer set of possible near-horizon geometries, where the holographic radial direction is non-trivially intertwined with field theory spatial coordinates. We find examples of several of the new types in systems consisting of reasonably simple matter sectors coupled to gravity, while arguing that others are forbidden by the Null Energy Condition. Extremal horizons in four dimensions governed by three-algebras or four-algebras are also discussed.

Norihiro Iizuka; Shamit Kachru; Nilay Kundu; Prithvi Narayan; Nilanjan Sircar; Sandip P. Trivedi; Huajia Wang

2012-12-10T23:59:59.000Z

335

Beamline Temperatures  

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

Temperatures Temperatures Energy: 3.0000 GeV Current: 493.2242 mA Date: 11-Jan-2014 21:40:00 Beamline Temperatures Energy 3.0000 GeV Current 493.2 mA 11-Jan-2014 21:40:00 LN:MainTankLevel 124.4 in LN:MainTankPress 56.9 psi SPEAR-BL:B120HeFlow 15.4 l/min SPEAR-BL:B131HeFlow 22.2 l/min BL 4 BL02:LCW 0.0 ℃ BL02:M0_LCW 31.5 ℃ BL 4-1 BL04-1:BasePlate -14.0 ℃ BL04-1:Bottom1 46.0 ℃ BL04-1:Bottom2 47.0 ℃ BL04-1:Lower 32.0 ℃ BL04-1:Moly 46.0 ℃ BL04-1:ChinGuard1 31.0 ℃ BL04-1:ChinGuard2 31.0 ℃ BL04-1:FirstXtalA -167.0 ℃ BL04-1:FirstXtalB -172.0 ℃ BL04-1:Pad1 31.0 ℃ BL04-1:Pad2 31.0 ℃ BL04-1:SecondXtalA -177.0 ℃ BL04-1:SecondXtalB -175.0 ℃ BL 4-2 BL04-2:BasePlate -14.0 ℃ BL04-2:Bottom1 24.0 ℃ BL04-2:Bottom2 25.0 ℃

336

Development of Polybenzimidazole-Based High-Temperature Membrane and Electrode Assemblies for Stationary and Automotive Applications  

Science Conference Proceedings (OSTI)

The program began on August 1, 2003 and ended on July 31, 2007. The goal of the project was to optimize a high-temperature polybenzimidazole (PBI) membrane to meet the performance, durability, and cost targets required for stationary fuel cell applications. These targets were identified in the Fuel Cell section (3.4) of DOEs Hydrogen, Fuel Cells and Infrastructure Technologies Program Multi-Year Research, Development and Demonstration Plan. A membrane that operates at high temperatures is important to the fuel cell industry because it is insensitive to carbon monoxide (a poison to low-temperature fuel cells), and does not require complex water management strategies. Together, these two benefits greatly simplify the fuel cell system. As a result, the high-temperature fuel cell system realizes a cost benefit as the number of components is reduced by nearly 30%. There is also an inherent reliability benefit as components such as humidifiers and pumps for water management are unnecessary. Furthermore, combined heat and power (CHP) systems may be the best solution for a commercial, grid-connected, stationary product that must offer a cost benefit to the end user. For a low-temperature system, the quality of the heat supplied is insufficient to meet consumer needs and comfort requirements, so peak heaters or supplemental boilers are required. The higher operating temperature of PBI technology allows the fuel cell to meet the heat and comfort demand without the additional equipment. Plug Power, working with the Rensselaer Polytechnic Institute (RPI) Polymer Science Laboratory, made significant advances in optimizing the PBI membrane material for operation at temperatures greater than 160oC with a lifetime of 40,000 hours. Supporting hardware such as flow field plates and a novel sealing concept were explored to yield the lower-cost stack assembly and corresponding manufacturing process. Additional work was conducted on acid loss, flow field design and cathode electrode development. Membranes and MEAs were supplied by team member BASF Fuel Cell (formerly PEMEAS), a manufacturer of polymer and fiber. Additional subcontractors Entegris, the University of South Carolina (USC) Fuel Cell Center, and RPIs Fuel Cell Center conducted activities with regard to stack sealing, acid modeling, and electrode development.

Vogel, John A.

2008-09-03T23:59:59.000Z

337

Mapping the Hazard of Extreme Rainfall by Peaks over Threshold Extreme Value Analysis and Spatial Regression Techniques  

Science Conference Proceedings (OSTI)

The occurrence of rainfalls of high magnitude constitutes a primary natural hazard in many parts of the world, and the elaboration of maps showing the hazard of extreme rainfalls has great theoretical and practical interest. In this work a ...

Santiago Beguera; Sergio M. Vicente-Serrano

2006-01-01T23:59:59.000Z

338

Predicted 21st century changes in seasonal extreme precipitation events in the parallel climate model  

E-Print Network (OSTI)

series suitable for extreme event analysis at climate modelother forms of extreme event analysis are not enabled byThe study of extreme events is the analysis of the tails of

Wehner, Michael F.

2004-01-01T23:59:59.000Z

339

Thermoelectric refrigerator having improved temperature stabilization means  

DOE Patents (OSTI)

A control system for thermoelectric refrigerators is disclosed. The thermoelectric refrigerator includes at least one thermoelectric element that undergoes a first order change at a predetermined critical temperature. The element functions as a thermoelectric refrigerator element above the critical temperature, but discontinuously ceases to function as a thermoelectric refrigerator element below the critical temperature. One example of such an arrangement includes thermoelectric refrigerator elements which are superconductors. The transition temperature of one of the superconductor elements is selected as the temperature control point of the refrigerator. When the refrigerator attempts to cool below the point, the metals become superconductors losing their ability to perform as a thermoelectric refrigerator. An extremely accurate, first-order control is realized.

Falco, Charles M. (Woodridge, IL)

1982-01-01T23:59:59.000Z

340

SER Temperature Coefficient  

SciTech Connect

Experimentally determine the overall isothermal temperature coefficient of the SER up to the design operating temperatures.

Johnson, J.L.

1959-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Supercomputers: Extreme Computing at the National Labs | Department of  

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

Supercomputers: Extreme Computing at the National Labs Supercomputers: Extreme Computing at the National Labs Supercomputers: Extreme Computing at the National Labs September 4, 2013 - 1:08pm Addthis Titan 1 of 5 Titan Oak Ridge National Laboratory's Titan has a theoretical peak performance of more than 20 petaflops, or more than 20 quadrillion calculations per second. This will enable researchers across the scientific arena, from materials to climate change to astrophysics, to acquire unparalleled accuracy in their simulations and achieve research breakthroughs more rapidly than ever before. Titan is currently the second fastest supercomputer in the world. Image: Courtesy of Oak Ridge National Laboratory. Sequoia 2 of 5 Sequoia Sequoia is a 20 petaflop, that is 20 quadrillion floating point operations per second, IBM BlueGene/Q system at Lawrence Livermore National

342

Intensification of hot extremes in the United States  

SciTech Connect

Governments are currently considering policies that will limit greenhouse gas concentrations, including negotiation of an international treaty to replace the expiring Kyoto Protocol. Existing mitigation targets have arisen primarily from political negotiations, and the ability of such policies to avoid dangerous impacts is still uncertain. Using a large suite of climate model experiments, we find that substantial intensification of hot extremes could occur within the next 3 decades, below the 2 C global warming target currently being considered by policy makers. We also find that the intensification of hot extremes is associated with a shift towards more anticyclonic atmospheric circulation during the warm season, along with warm-season drying over much of the U.S. The possibility that intensification of hot extremes could result from relatively small increases in greenhouse gas concentrations suggests that constraining global warming to 2 C may not be sufficient to avoid dangerous climate change.

Diffenbaugh, Noah [Stanford University; Ashfaq, Moetasim [ORNL

2010-01-01T23:59:59.000Z

343

Controllable Gaussian-qubit interface for extremal quantum state engineering  

E-Print Network (OSTI)

We study state engineering through bilinear interactions between two remote qubits and two-mode Gaussian light fields. The attainable two-qubit states span the entire physically allowed region in the entanglement-versus-global-purity plane. Two-mode Gaussian states with maximal entanglement at fixed global and marginal entropies produce maximally entangled two-qubit states in the corresponding entropic diagram. We show that a small set of parameters characterizing extremally entangled two-mode Gaussian states is sufficient to control the engineering of extremally entangled two-qubit states, which can be realized in realistic matter-light scenarios.

G. Adesso; S. Campbell; F. Illuminati; M. Paternostro

2010-03-11T23:59:59.000Z

344

Extreme high-head portables provide more pumping options  

SciTech Connect

Three years ago, Godwin Pumps, one of the largest manufacturers of portable pumps, introduced its Extreme Duty High Lift (HL) series of pumps and more mines are finding unique applications for these pumps. The Extreme HL series is a range single-stage Dri-Prime pumps with heads up to 600 feet and flows up to 5,000 gallons per minute. The American Coal Co.'s Galatia mine, an underground longwall mine in southern Illinois, used an HL 160 to replace a multiple-staged centrifugal pump. It provided Galatia with 1,500 gpm at 465 ft. 3 photos.

Fiscor, S.

2006-10-15T23:59:59.000Z

345

TECA: A Parallel Toolkit for Extreme Climate Analysis  

SciTech Connect

We present TECA, a parallel toolkit for detecting extreme events in large climate datasets. Modern climate datasets expose parallelism across a number of dimensions: spatial locations, timesteps and ensemble members. We design TECA to exploit these modes of parallelism and demonstrate a prototype implementation for detecting and tracking three classes of extreme events: tropical cyclones, extra-tropical cyclones and atmospheric rivers. We process a modern TB-sized CAM5 simulation dataset with TECA, and demonstrate good runtime performance for the three case studies.

Prabhat, Mr; Ruebel, Oliver; Byna, Surendra; Wu, Kesheng; Li, Fuyu; Wehner, Michael; Bethel, E. Wes

2012-03-12T23:59:59.000Z

346

Top Ten Challenges in Extreme-Scale Visual Analytics  

Science Conference Proceedings (OSTI)

In the current special issue of IEEE Computer Graphics and Applications (CG&A), researchers share their research and development (R&D) findings and results on applying visual analytics to extreme-scale data. Having surveyed the special issue articles and other related R&D efforts in the area, we have identified what we consider to be the top challenges of extreme-scale visual analytics. To cater to the diverse readership of CG&A, our discussion evaluates challenges in all areas of the field, including algorithms, hardware, software, engineering, and social issues.

Wong, Pak C.; Shen, Han-Wei; Johnson, Christopher R.; Chen, Chaomei; Ross, Rob

2012-05-08T23:59:59.000Z

347

Mechanisms Controlling Variability of the Interhemispheric Sea Surface Temperature Gradient in the Tropical Atlantic  

Science Conference Proceedings (OSTI)

The seasonal evolution of sea surface temperature (SST) fields in the tropical Atlantic is explored for composites of extremely STRONG and WEAK northward SST gradients, because these are known to control the basinwide pressure gradient, latitude ...

Richard G. Wagner

1996-09-01T23:59:59.000Z

348

Hourly Rainfall Changes in Response to Surface Air Temperature over Eastern Contiguous China  

Science Conference Proceedings (OSTI)

In this study, late-summer rainfall over eastern contiguous China is classified according to hourly intensity and the changes of moderate, intense, and extreme precipitation in response to variation of surface air temperature are analyzed. The e-...

Rucong Yu; Jian Li

2012-10-01T23:59:59.000Z

349

Summer Drought Patterns in Canada and the Relationship toGlobal Sea Surface Temperatures  

Science Conference Proceedings (OSTI)

Canadian summer (JuneAugust) Palmer Drought Severity Index (PDSI) variations and winter (December February) global sea surface temperature (SST) variations are examined for the 63-yr period of 19402002. Extreme wet and dry Canadian summers are ...

Amir Shabbar; Walter Skinner

2004-07-01T23:59:59.000Z

350

Method for generating extreme ultraviolet with mather-type plasma accelerators for use in Extreme Ultraviolet Lithography  

DOE Patents (OSTI)

A device and method for generating extremely short-wave ultraviolet electromagnetic wave uses two intersecting plasma beams generated by two plasma accelerators. The intersection of the two plasma beams emits electromagnetic radiation and in particular radiation in the extreme ultraviolet wavelength. In the preferred orientation two axially aligned counter streaming plasmas collide to produce an intense source of electromagnetic radiation at the 13.5 nm wavelength. The Mather type plasma accelerators can utilize tin, or lithium covered electrodes. Tin, lithium or xenon can be used as the photon emitting gas source.

Hassanein, Ahmed (Bolingbrook, IL); Konkashbaev, Isak (Bolingbrook, IL)

2006-10-03T23:59:59.000Z

351

Extreme conditions during multibubble cavitation: Sonoluminescence as a spectroscopic probe  

E-Print Network (OSTI)

Cavitation MBSL Plasma a b s t r a c t We review recent work on the use of sonoluminescence (SL) to probe to $9000 K. The effective pressure during MBSL is $300 bar, based on atomic line shifts. Given nanosecond in a liquid, which can create extreme conditions in localized, short- lived hot spots. During the past few

Zimmerman, Steven C.

352

A new method for estimating extreme rainfall probabilities  

Science Conference Proceedings (OSTI)

As part of an EPRI-funded research program, the Yankee Atomic Electric Company developed a new method for estimating probabilities of extreme rainfall. It can be used, along with other techniques, to improve the estimation of probable maximum precipitation values for specific basins or regions.

Harper, G.A.; O'Hara, T.F. (Yankee Atomic Electric Company, Bolton, MA (United States)); Morris, D.I. (Electric Power Research Institute, Palo Alto, CA (United States))

1994-02-01T23:59:59.000Z

353

On the design of experiments to study extreme field limits  

SciTech Connect

We propose experiments on the collision of high intensity electromagnetic pulses with electron bunches and on the collision of multiple electromagnetic pulses for studying extreme field limits in the nonlinear interaction of electromagnetic waves. The effects of nonlinear QED will be revealed in these laser plasma experiments.

Bulanov, S. S.; Chen, M.; Schroeder, C. B.; Esarey, E.; Leemans, W. P.; Bulanov, S. V.; Esirkepov, T. Zh.; Kando, M.; Koga, J. K.; Zhidkov, A. G.; Chen, P.; Mur, V. D.; Narozhny, N. B.; Popov, V. S.; Thomas, A. G. R.; Korn, G. [University of California, Berkeley, California 94720 (United States); Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States) and University of California, Berkeley, California 94720 (United States); Kansai Photon Science Institute, JAEA, Kizugawa, Kyoto 619-0215 (Japan); Osaka University, Osaka 565-0871 (Japan); Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei 10617, Taiwan (China); Moscow Engineering Physics Institute (State University), Moscow 115409 (Russian Federation); Institute of Theoretical and Experimental Physics, Moscow 117218 (Russian Federation); University of Michigan, Ann Arbor, Michigan 48103 (United States); Max-Planck-Institut fur Quantenoptik, Garching 85748 (Germany) and ELI Beamline Facility, Institute of Physics, Czech Academy of Sciences, Prague 18221 (Czech Republic)

2012-12-21T23:59:59.000Z

354

Probability Models for Annual Extreme Water-Equivalent Ground Snow  

Science Conference Proceedings (OSTI)

A statistical analysis of annual extreme water-equivalents of ground snow (reported as inches of water) measured up through the winter of 197980 at 76 weather stations in the northeast quadrant of the United States is presented. The analysis ...

Bruce Ellingwood; Robert K. Redfield

1984-06-01T23:59:59.000Z

355

Rule-Based prediction of rare extreme values  

Science Conference Proceedings (OSTI)

This paper describes a rule learning method that obtains models biased towards a particular class of regression tasks. These tasks have as main distinguishing feature the fact that the main goal is to be accurate at predicting rare extreme values of ...

Rita Ribeiro; Lus Torgo

2006-10-01T23:59:59.000Z

356

An extreme-distance approach to multiple criteria ranking  

Science Conference Proceedings (OSTI)

A distance approach based on extreme points, or predefined ideal and anti-ideal points, is proposed to improve on the TOPSIS (Technique for Order Performance [or Ordered Preference] by Similarity to Ideal Solution) method of multiple criteria ranking. ... Keywords: Comparative study, Distance-based ranking, Multiple criteria decision analysis, Multiple criteria ranking, TOPSIS

Ye Chen; D. Marc Kilgour; Keith W. Hipel

2011-03-01T23:59:59.000Z

357

ENSO and Extreme Rainfall Events in South America  

Science Conference Proceedings (OSTI)

The influence of the opposite phases of ENSO on the frequency of extreme rainfall events over South America is analyzed for each month of the ENSO cycle on the basis of a large set of daily station rainfall data and compared with the influence of ...

Alice M. Grimm; Renata G. Tedeschi

2009-04-01T23:59:59.000Z

358

Causal Analysis of the Unanticipated Extremity Exposure at HFEF  

SciTech Connect

This report covers the unintended extremity exposure to an operator while handling a metallurgical mount sample of irradiated fuel following an off-scale high beta radiation reading of the sample. The decision was made to continue working after the meter indicated high off-scale by the HPT Supervisor, which resulted in the operator at the next operation being exposed.

David E. James; Charles R. Posegate; Thomas P. Zahn; Alan G. Wagner

2011-11-01T23:59:59.000Z

359

Laura Roach Islamic Extremism: Undermining a Fundamentalist Movement in Indonesia  

E-Print Network (OSTI)

Laura Roach Islamic Extremism: Undermining a Fundamentalist Movement in Indonesia College: COLSA, Major: EREC Freshman Editor: Stephanie Weiner #12;I. Problem Indonesia has the largest Muslim population, Indonesia is not an Islamic state; it is the third largest democracy in the world.1 Unsurprisingly

New Hampshire, University of

360

Estimation of Extreme Wind Speeds with Very Long Return Periods  

Science Conference Proceedings (OSTI)

Long series of hourly mean wind speeds and the maximum hourly 3-s gust are simulated for four sites in the British Isles in order to investigate methods for the determination of extreme wind speed events. The simulation is performed using a one-...

M. D. G. Dukes; J. P. Palutikof

1995-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

A tree augmented classifier based on Extreme Imprecise Dirichlet Model  

Science Conference Proceedings (OSTI)

We present TANC, a TAN classifier (tree-augmented naive) based on imprecise probabilities. TANC models prior near-ignorance via the Extreme Imprecise Dirichlet Model (EDM). A first contribution of this paper is the experimental comparison between EDM ... Keywords: Classification, Classifier, Imprecise Dirichlet Model, Naive credal, TANC

G. Corani; C. P. de Campos

2010-11-01T23:59:59.000Z

362

A Nonstationary Extreme Value Analysis for the Assessment of Changes in Extreme Annual Wind Speed over the Gulf of St. Lawrence, Canada  

Science Conference Proceedings (OSTI)

Changes in the extreme annual wind speed in and around the Gulf of St. Lawrence (Canada) were investigated through a nonstationary extreme value analysis of the annual maximum 10-m wind speed obtained from the North American Regional Reanalysis (...

Y. Hundecha; A. St-Hilaire; T. B. M. J. Ouarda; S. El Adlouni; P. Gachon

2008-11-01T23:59:59.000Z

363

CDIAC Temperature Data Sets  

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

Temperature CDIAC Climate Holdings Containing Temperature Data Global Data Sets Data Set Name Investigators Data TypeFormat Period of Record NASA GISS Surface Temperature...

364

High Temperatures & Electricity Demand  

E-Print Network (OSTI)

High Temperatures & Electricity Demand An Assessment of Supply Adequacy in California Trends.......................................................................................................1 HIGH TEMPERATURES AND ELECTRICITY DEMAND.....................................................................................................................7 SECTION I: HIGH TEMPERATURES AND ELECTRICITY DEMAND ..........................9 BACKGROUND

365

Physics of Extreme Gravitomagnetic and Gravity-Like Fields for Novel Space Propulsion and Energy Generation  

E-Print Network (OSTI)

In 2006 Tajmar et al. reported on the measurements of extreme gravitomagnetic fields from small Nb rings at cryogenic temperatures that are about 18 orders of magnitude larger than gravitomagnetic fields obtained from GR (general relativity). Cifuolini in 2004 and the NASA-Stanford Gravity Probe-B experiment in 2007 confirmed the Lense-Thirring effect as predicted by GR (gravitomagnetic fields generated by a rotating massive body, i.e. Earth) within some 10%. In 2007 gravitomagnetic fields generated by a rotating cryogenic lead disk were measured by Graham et al. Though these measurements were not conclusive (the accuracy of the laser gyrometer was not sufficient to produce a standard deviation small enough) their experiment seems to have seen the same phenomenon reported earlier by Tajmar et al., termed parity violation. This means that gravitomagnetic fields produced by the cryogenic rotating ring or disk vary substantially and change sign for clockwise and counter-clockwise directions of rotation. The experimental situation therefore occurs to be contradictory. On the one hand GR has been confirmed while at the same time, there seems to be experimental evidence for the existence of extreme gravitomagnetic fields that cannot be generated by the movement of large masses. If these experiments can be confirmed, they give a clear indication for the existence of additional gravitational fields of non-Newtonian nature. As was shown by the GP-B experiment, measuring gravitomagnetic fields from GR poses extreme difficulties. Therefore a novel physical mechanism should exist for the generation of gravity-like fields, which might also provide the key to gravitational engineering similar to electromagnetic technology.

Jochem Hauser; Walter Drscher

2011-04-16T23:59:59.000Z

366

Response of precipitation extremes to idealized global warming in an aqua-planet climate model: Towards robust projection across different horizontal resolutions  

Science Conference Proceedings (OSTI)

Current climate models produce quite heterogeneous projections for the responses of precipitation extremes to future climate change. To help understand the range of projections from multimodel ensembles, a series of idealized 'aquaplanet' Atmospheric General Circulation Model (AGCM) runs have been performed with the Community Atmosphere Model CAM3. These runs have been analysed to identify the effects of horizontal resolution on precipitation extreme projections under two simple global warming scenarios. We adopt the aquaplanet framework for our simulations to remove any sensitivity to the spatial resolution of external inputs and to focus on the roles of model physics and dynamics. Results show that a uniform increase of sea surface temperature (SST) and an increase of low-to-high latitude SST gradient both lead to increase of precipitation and precipitation extremes for most latitudes. The perturbed SSTs generally have stronger impacts on precipitation extremes than on mean precipitation. Horizontal model resolution strongly affects the global warming signals in the extreme precipitation in tropical and subtropical regions but not in high latitude regions. This study illustrates that the effects of horizontal resolution have to be taken into account to develop more robust projections of precipitation extremes.

Li, F.; Collins, W.D.; Wehner, M.F.; Williamson, D.L.; Olson, J.G.

2011-04-15T23:59:59.000Z

367

GOES Satellite Data Maps Areas of Extreme Cold in Colorado  

Science Conference Proceedings (OSTI)

Geostationary Operational Environmental Satellite (GOES) enhanced infrared (IR) imagery depicted very cold temperatures over Colorado on the morning of 8 December 1978. The situation was unusual because skies were clear and the cold temperatures ...

Robert A. Maddox; David W. Reynolds

1980-01-01T23:59:59.000Z

368

Microsoft Word - Achieving Extreme Efficiency cvr.doc  

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

01E 01E Achieving Extreme Efficiency: How to get the job done when energy is extremely expensive and scarce Rich Brown, Louis-Benoit Desroches, Karina Garbesi and Alan Meier Environmental Energy Technologies Division June 2012 To be presented at the 2012 ACEEE Summer Study on Energy Efficiency in Buildings, Asilomar, CA, August 2012, and to be published in the Proceedings of the 2012 ACEEE Summer Study on Energy Efficiency in Buildings, in Asilomar, CA. August 2012 DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes

369

The Extreme Benchmark Suite: Measuring High-Performance Embedded Systems  

E-Print Network (OSTI)

The Extreme Benchmark Suite (XBS) is designed to support performance measurement of highly parallel extreme processors, many of which are designed to replace custom hardware implementations. XBS is designed to avoid many of the problems that occur when using existing benchmark suites with nonstandard and experimental architectures. In particular, XBS is intended to provide a fair comparison of a wide range of architectures, from general-purpose processors to hard-wired ASIC implementations. XBS has a clean modular structure to reduce porting effort, and is designed to be usable with slow cycle-accurate simulators. This work presents the motivation for the creation of XBS and describes in detail the XBS framework. Several benchmarks implemented with this framework are discussed, and these benchmarks are used to compare a standard platform, an experimental architecture, and custom

Steven Gerding; Krste Asanovi?

2005-01-01T23:59:59.000Z

370

Top Ten Interaction Challenges in Extreme-Scale Visual Analytics  

Science Conference Proceedings (OSTI)

The chapter presents ten selected user interfaces and interaction challenges in extreme-scale visual analytics. The study of visual analytics is often referred to as 'the science of analytical reasoning facilitated by interactive visual interfaces' in the literature. The discussion focuses on the issues of applying visual analytics technologies to extreme-scale scientific and non-scientific data ranging from petabyte to exabyte in sizes. The ten challenges are: in situ interactive analysis, user-driven data reduction, scalability and multi-level hierarchy, representation of evidence and uncertainty, heterogeneous data fusion, data summarization and triage for interactive query, analytics of temporally evolving features, the human bottleneck, design and engineering development, and the Renaissance of conventional wisdom. The discussion addresses concerns that arise from different areas of hardware, software, computation, algorithms, and human factors. The chapter also evaluates the likelihood of success in meeting these challenges in the near future.

Wong, Pak C.; Shen, Han-Wei; Chen, Chaomei

2012-05-31T23:59:59.000Z

371

Impacts of Extreme Weather on Power Systems and Components  

Science Conference Proceedings (OSTI)

Heat storm events resulted in an abnormally high rate of failure among small distribution transformers across California in 2006 and 2007. Hurricanes, such as Katrina and Ike, also resulted in widespread damage to the power infrastructure and caused severe outages, which affected millions of customers for days. The costs of such events, and other extreme weather conditions, amounted to hundreds of millions of dollars in damages and brought heavy scrutiny from public officials and regulatory bodies. This ...

2009-12-23T23:59:59.000Z

372

Extremely long hard bursts observed by Konus-Wind  

SciTech Connect

We report the observations of the prompt emission of the extremely long hard burst, GRB 060814B, discovered by Konus-Wind and localized by the IPN. The observations reveal a smooth, hard, {approx}40-min long pulse followed by weaker emission seen several hours after the burst onset. We also present the Konus-Wind data on similar burst, GRB 971208, localized by BATSE/IPN. And finally we discuss the different possible origins of these unusual events.

Pal'shin, V.; Aptekar, R.; Frederiks, D.; Golenetskii, S.; Il'inskii, V.; Mazets, E.; Oleynik, P.; Ulanov, M. [Ioffe Physical-Technical Institute of the Russian Academy of Sciences, St. Petersburg, 194021 (Russian Federation); Yamaoka, K. [Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1, Fuchinobe, Sagamihara 229-8558 (Japan); Ohno, M. [Department of Physical Sciences, School of Science, Hiroshima University 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Hurley, K. [Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA 94720-7450 (United States); Sakamoto, T. [Goddard Space Flight Center, NASA, Greenbelt, MD 20771 (United States); Mitrofanov, I. G.; Golovin, D.; Lirvak, M. L.; Sanin, A. B. [Institute for Space Research, Profsojuznaja 84/32, Moscow 117997 (Russian Federation); Boynton, W.; Fellows, C.; Harshman, K.; Shinohara, C. [Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721 (United States)] (and others)

2008-05-22T23:59:59.000Z

373

The alliance for computing at the extreme scale.  

SciTech Connect

Los Alamos and Sandia National Laboratories have formed a new high performance computing center, the Alliance for Computing at the Extreme Scale (ACES). The two labs will jointly architect, develop, procure and operate capability systems for DOE's Advanced Simulation and Computing Program. This presentation will discuss a petascale production capability system, Cielo, that will be deployed in late 2010, and a new partnership with Cray on advanced interconnect technologies.

Ang, James Alfred; Dosanjh, Sudip Singh; Doerfler, Douglas W.; Hemmert, Karl Scott; Vigil, Manuel (Los Alamos National Laboratory, Los Alamos, NM); Koch, Ken (Los Alamos National Laboratory, Los Alamos, NM); Morrison, John (Los Alamos National Laboratory, Los Alamos, NM)

2010-05-01T23:59:59.000Z

374

Diffractive element in extreme-UV lithography condenser  

DOE Patents (OSTI)

Condensers having a mirror with a diffraction grating in projection lithography using extreme ultra-violet significantly enhances critical dimension control. The diffraction grating has the effect of smoothing the illumination at the camera's entrance pupil with minimum light loss. Modeling suggests that critical dimension control for 100 nm features can be improved from 3 nm to less than about 0.5 nm.

Sweatt, William C. (Albuquerque, NM); Ray-Chaudhuri, Avijit (Livermore, CA)

2001-01-01T23:59:59.000Z

375

Diffractive element in extreme-UV lithography condenser  

DOE Patents (OSTI)

Condensers having a mirror with a diffraction grating in projection lithography using extreme ultra-violet significantly enhances critical dimension control. The diffraction grating has the effect of smoothing the illumination at the camera's entrance pupil with minimum light loss. Modeling suggests that critical dimension control for 100 nm features can be improved from 3 nm to less than about 0.5 nm.

Sweatt, William C. (Albuquerque, NM); Ray-Chaudhurl, Avijit K. (Livermore, CA)

2000-01-01T23:59:59.000Z

376

Cluster beam targets for laser plasma extreme ultraviolet and soft x-ray sources  

DOE Patents (OSTI)

Method and apparatus for producing extreme ultraviolet (EUV) and soft x-ray radiation from an ultra-low debris plasma source are disclosed. Targets are produced by the free jet expansion of various gases through a temperature controlled nozzle to form molecular clusters. These target clusters are subsequently irradiated with commercially available lasers of moderate intensity (10{sup 11}--10{sup 12} watts/cm{sup 2}) to produce a plasma radiating in the region of 0.5 to 100 nanometers. By appropriate adjustment of the experimental conditions the laser focus can be moved 10--30 mm from the nozzle thereby eliminating debris produced by plasma erosion of the nozzle. 5 figs.

Kublak, G.D.; Richardson, M.C.

1996-11-19T23:59:59.000Z

377

Cluster beam targets for laser plasma extreme ultraviolet and soft x-ray sources  

DOE Patents (OSTI)

Method and apparatus for producing extreme ultra violet (EUV) and soft x-ray radiation from an ultra-low debris plasma source are disclosed. Targets are produced by the free jet expansion of various gases through a temperature controlled nozzle to form molecular clusters. These target clusters are subsequently irradiated with commercially available lasers of moderate intensity (10.sup.11 -10.sup.12 watts/cm.sup.2) to produce a plasma radiating in the region of 0.5 to 100 nanometers. By appropriate adjustment of the experimental conditions the laser focus can be moved 10-30 mm from the nozzle thereby eliminating debris produced by plasma erosion of the nozzle.

Kublak, Glenn D. (124 Turquoise Way, Livermore, Alameda County, CA 94550); Richardson, Martin C. (CREOL

1996-01-01T23:59:59.000Z

378

Investigations into High Temperature Components and Packaging  

SciTech Connect

The purpose of this report is to document the work that was performed at the Oak Ridge National Laboratory (ORNL) in support of the development of high temperature power electronics and components with monies remaining from the Semikron High Temperature Inverter Project managed by the National Energy Technology Laboratory (NETL). High temperature electronic components are needed to allow inverters to operate in more extreme operating conditions as required in advanced traction drive applications. The trend to try to eliminate secondary cooling loops and utilize the internal combustion (IC) cooling system, which operates with approximately 105 C water/ethylene glycol coolant at the output of the radiator, is necessary to further reduce vehicle costs and weight. The activity documented in this report includes development and testing of high temperature components, activities in support of high temperature testing, an assessment of several component packaging methods, and how elevated operating temperatures would impact their reliability. This report is organized with testing of new high temperature capacitors in Section 2 and testing of new 150 C junction temperature trench insulated gate bipolar transistor (IGBTs) in Section 3. Section 4 addresses some operational OPAL-GT information, which was necessary for developing module level tests. Section 5 summarizes calibration of equipment needed for the high temperature testing. Section 6 details some additional work that was funded on silicon carbide (SiC) device testing for high temperature use, and Section 7 is the complete text of a report funded from this effort summarizing packaging methods and their reliability issues for use in high temperature power electronics. Components were tested to evaluate the performance characteristics of the component at different operating temperatures. The temperature of the component is determined by the ambient temperature (i.e., temperature surrounding the device) plus the temperature increase inside the device due the internal heat that is generated due to conduction and switching losses. Capacitors and high current switches that are reliable and meet performance specifications over an increased temperature range are necessary to realize electronics needed for hybrid-electric vehicles (HEVs), fuel cell (FC) and plug-in HEVs (PHEVs). In addition to individual component level testing, it is necessary to evaluate and perform long term module level testing to ascertain the effects of high temperature operation on power electronics.

Marlino, L.D.; Seiber, L.E.; Scudiere, M.B.; M.S. Chinthavali, M.S.; McCluskey, F.P.

2007-12-31T23:59:59.000Z

379

Transposed critical temperature Rankine thermodynamic cycle  

DOE Green Energy (OSTI)

The transposed critical temperature (TPCT) is shown to be an extremely important thermodynamic property in the selection of the working fluid and turbine states for optimized geothermal power plants operating on a closed organic (binary) Rankine cycle. When the optimum working fluid composition and process states are determined for given source and sink conditions (7 parameter optimization), turbine inlet states are found to be consistently adjacent to the low pressure side of the working fluids' TPCT line on pressure-enthalpy coordinates. Although the TPCT concepts herein may find numerous future applications in high temperature, advanced cycles for fossil or nuclear fired steam power plants and in supercritical organic Rankine heat recovery bottoming cycles for Diesel engines, this discussion is limited to moderate temperature (150 to 250/sup 0/C) closed simple organic Rankine cycle geothermal power plants. Conceptual design calculations pertinent to the first geothermal binary cycle Demonstration Plant are included.

Pope, W.L.; Doyle, P.A.

1980-04-01T23:59:59.000Z

380

Development of a low-cost integrated 20-kW-AC solar tracking subarray for grid-connected PV power system applications. Final technical report  

DOE Green Energy (OSTI)

This report chronicles Utility Power Group's (UPG) successful two-year Photovoltaic Manufacturing Technology (PVMaT) Phase 4A1 work effort which began in July, 1995. During this period, UPG completed design, fabrication, testing and demonstration of a modular and fully integrated 15-kW-ac, solar tracking PV power system sub-array. The two key and innovative components which were developed are a Modular Panel which optimizes factory assembly of PV modules into a large area, field-deployable, structurally-integrated PV panel, and an Integrated Power Processing Unit which combines all dc and ac power collection, conversion and control functions within a single, field-deployable structurally-integrated electrical enclosure. These two key sub-array elements, when combined with a number of other electrical, mechanical, and structural components, create a low-cost and high-performance PV power system. This system, or sub-array, can be deployed in individual units, or paralleled with any number of other sub-arrays, to construct multi-megawatt P fields. 21 figs.

Stern, M.; Duran, G.; Fourer, G.; Mackamul, K.; Whalen, W.; Loo, M. van; West, R. [Utility Power Group, Chatsworth, CA (US)

1998-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Grid-connected integrated community energy system. Phase II, Stage 1, final report. Conceptual design, demand and fuel projections and cost analysis  

DOE Green Energy (OSTI)

The Phase I Report, Grid ICES, presented the broad alternatives and implications for development of an energy system satisfying thermal demand with the co-generation of electric power, all predicated on the use of solid fuels. Participants of the system are the University of Minnesota, operator and primary thermal user, and Northern States Power Company, primary electrical user; with St. Mary's Hospital, Fairview Hospital, and Augsburg College as Add-on Customers for the thermal service (Option I). Included for consideration are the Options of (II) solid waste disposal by the Pyrolysis Method, with heat recovery, and (III) conversion of a portion of the thermal system from steam to hot water distribution to increase co-generation capability and as a demonstration system for future expansion. This report presents the conceptual design of the energy system and each Option, with the economic implications identified so that selection of the final system can be made. Draft outline of the Environmental Assessment for the project is submitted as a separate report.

Not Available

1978-03-08T23:59:59.000Z

382

Trenton ICES: demonstration of a grid-connected integrated community energy system. Phase II. Volumes 1 and 2. Preliminary design of ICES system and analysis of community ownership  

SciTech Connect

Preliminary design and evaluation for the system has been carried out. The findings of this study are: (1) it is technically feasible, utilizing commercially available hardware; (2) under utility ownership and operation, it will not be economically competitive with conventional alternatives for heating and cooling buildings (analysis contained in companion report under separate cover); (3) under utility ownership and operation, no restrictions have been identified that would prevent the project from proceeding; (4) under community ownership, preliminary analysis indicates that thermal energy produced by Trenton ICES will be approximately 12 percent less expensive than thermal energy produced by oil-fired boilers; and (5) a review and update of institutional analyses performed during Phase 2 has identified no factors that would preclude community ownership and operation of the Trenton ICES. The background data produced for the analysis of the Trenton ICES based on utility ownership and operation can, in large part, be used as the bases for a detailed analysis of community ownership.

1978-03-22T23:59:59.000Z

383

Novel anti-islanding detection method and maximum power tracking algorithm for grid connected photovoltaic systems with interleaved dc/dc converters  

Science Conference Proceedings (OSTI)

Photovoltaic (PV) energy, which has proven to be environmentally friendly and sustainable compared to traditional energy sources, has gained widespread attention in recent years. The grid-tied PV energy conversion system has become a preferred choice ...

Ahmad Yafaoui

2012-01-01T23:59:59.000Z

384

Scientific aspects of hydraulic engineering in the Extreme North  

SciTech Connect

Information relative to participation of the B. E. Vedeneev All-Russian Scientific-Research Institute of Hydraulic Engineering (VNIIG im. B. E. Vedeneeva) in the solution of problems of scientific verification of the design, construction, and operation of water-development works in regions of the Extreme North are presented. Basic characteristics of changes in the technical condition of high rock-and-earthfill dams, and the conditions under which their safety is ensured for long-term service in these regions are examined.

Panov, S. I.; Krivonogova, N. F.

2012-03-15T23:59:59.000Z

385

Low-cost method for producing extreme ultraviolet lithography optics  

DOE Patents (OSTI)

Spherical and non-spherical optical elements produced by standard optical figuring and polishing techniques are extremely expensive. Such surfaces can be cheaply produced by diamond turning; however, the roughness in the diamond turned surface prevent their use for EUV lithography. These ripples are smoothed with a coating of polyimide before applying a 60 period Mo/Si multilayer to reflect a wavelength of 134 .ANG. and have obtained peak reflectivities close to 63%. The savings in cost are about a factor of 100.

Folta, James A. (Livermore, CA); Montcalm, Claude (Fort Collins, CO); Taylor, John S. (Livermore, CA); Spiller, Eberhard A. (Mt. Kisco, NY)

2003-11-21T23:59:59.000Z

386

Global Distribution of Extreme Precipitation and High-Impact Landslides in 2010 Relative to Previous Years  

Science Conference Proceedings (OSTI)

It is well known that extreme or prolonged rainfall is the dominant trigger of landslides worldwide. While research has evaluated the spatiotemporal distribution of extreme rainfall and landslides at local or regional scales using in situ data, ...

Dalia Kirschbaum; Robert Adler; David Adler; Christa Peters-Lidard; George Huffman

2012-10-01T23:59:59.000Z

387

Global Precipitation Extremes Associated with Diurnally Varying Low-Level Jets  

Science Conference Proceedings (OSTI)

Extreme rainfall events have important societal impacts: for example, by causing flooding, replenishing reservoirs, and affecting agricultural yields. Previous literature has documented linkages between rainfall extremes and nocturnal low-level ...

Andrew J. Monaghan; Daran L. Rife; James O. Pinto; Christopher A. Davis; John R. Hannan

2010-10-01T23:59:59.000Z

388

Extreme Rainfall in the Mediterranean: What Can We Learn from Observations?  

Science Conference Proceedings (OSTI)

Flash floods induced by extreme rainfall events represent one of the most life-threatening phenomena in the Mediterranean. While their catastrophic ground effects are well documented by postevent surveys, the extreme rainfall events that generate ...

N. Rebora; L. Molini; E. Casella; A. Comellas; E. Fiori; F. Pignone; F. Siccardi; F. Silvestro; S. Tanelli; A. Parodi

2013-06-01T23:59:59.000Z

389

Developing Synoptic Analogs for Extreme Mass Balance Conditions on Queen Elizabeth Island Ice Caps  

Science Conference Proceedings (OSTI)

Detailed synoptic and climate analyses were undertaken for summer seasons during which extreme mass balance conditions were recorded on glaciers in the Queen Elizabeth Islands in high Arctic Canada. Three types of mass balance extremes were ...

Bea Taylor Alt

1987-12-01T23:59:59.000Z

390

Use of Normalized Anomaly Fields to Anticipate Extreme Rainfall in the Mountains of Northern California  

Science Conference Proceedings (OSTI)

Extreme rainfall events contribute a large portion of wintertime precipitation to northern California. The motivations of this paper were to study the observed differences in the patterns between extreme and more commonly occurring lighter ...

Norman W. Junker; Richard H. Grumm; Robert Hart; Lance F. Bosart; Katherine M. Bell; Frank J. Pereira

2008-06-01T23:59:59.000Z

391

Differential Adaptive Capacity to Extreme Heat: A Phoenix, Arizona, Case Study  

Science Conference Proceedings (OSTI)

Climate change is projected to increase the number of days producing excessive heat across the southwestern United States, increasing population exposure to extreme heat events. Extreme heat is currently the main cause of weather-related mortality ...

Mary H. Hayden; Hannah Brenkert-Smith; Olga V. Wilhelmi

2011-10-01T23:59:59.000Z

392

CO2 Sensitivity of Extreme Climate Events in the Western United States  

Science Conference Proceedings (OSTI)

Based upon trends in observed climate, extreme events are thought to be increasing in frequency and/or magnitude. This change in extreme events is attributed to enhancement of the hydrologic cycle caused by increased greenhouse gas ...

Jason L. Bell; Lisa C. Sloan

2006-07-01T23:59:59.000Z

393

Methods for Exploring Spatial and Temporal Variability of Extreme Events in Climate Data  

Science Conference Proceedings (OSTI)

This study presents various statistical methods for exploring and summarizing spatial extremal properties in large gridpoint datasets. Extremal properties are inferred from the subset of gridpoint values that exceed sufficiently high, time-...

C. A. S. Coelho; C. A. T. Ferro; D. B. Stephenson; D. J. Steinskog

2008-05-01T23:59:59.000Z

394

Tests of the Generalized Pareto Distribution for Predicting Extreme Wind Speeds  

Science Conference Proceedings (OSTI)

Extreme wind speed predictions are often based on statistical analysis of site measurements of annual maxima, using one of the Generalized Extreme Value (GEV) distributions. An alternative method applies one of the Generalized Pareto ...

B. B. Brabson; J. P. Palutikof

2000-09-01T23:59:59.000Z

395

Expected Structure of Extreme Waves in a Gaussian Sea. Part I: Theory and SWADE Buoy Measurements  

Science Conference Proceedings (OSTI)

This paper is concerned with the expected configuration in space and time surrounding extremely high crests in a random wave field, or, equivalently, the mean configuration averaged over realizations of extreme events. A simple, approximate ...

O. M. Phillips; Daifang Gu; Mark Donelan

1993-05-01T23:59:59.000Z

396

Bayesian Changepoint Analysis for Extreme Events (Typhoons, Heavy Rainfall, and Heat Waves): An RJMCMC Approach  

Science Conference Proceedings (OSTI)

A hierarchical Bayesian framework is developed to identify multiple abrupt regime shifts in an extreme event series. Specifically, extreme events are modeled as a Poisson process with a gamma-distributed rate. Multiple candidate hypotheses are ...

Xin Zhao; Pao-Shin Chu

2010-03-01T23:59:59.000Z

397

Characterizing the Variability and Extremes of the Stratospheric Polar Vortices Using 2D Moment Analysis  

Science Conference Proceedings (OSTI)

The mean state, variability, and extreme variability of the stratospheric polar vortices, with an emphasis on the Northern Hemisphere (NH) vortex, are examined using two-dimensional moment analysis and extreme value theory (EVT). The use of ...

Daniel M. Mitchell; Andrew J. Charlton-Perez; Lesley J. Gray

2011-06-01T23:59:59.000Z

398

Distribution of Extreme Winds in the Bonneville Power Administration Service Area  

Science Conference Proceedings (OSTI)

Annual extreme 1 min wind speeds at 78 Pacific Northwest locations were analyzed using the Fisher-Tippet type II extreme value function. From computed mean recurrence intervals, we could easily determine the wind speed likely to recur in a ...

J. William Wantz; Robert E. Sinclair

1981-12-01T23:59:59.000Z

399

How Do You Stay Warm While Saving Money and Energy in Extreme...  

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

Stay Warm While Saving Money and Energy in Extreme Weather? How Do You Stay Warm While Saving Money and Energy in Extreme Weather? February 3, 2011 - 6:30am Addthis Many states are...

400

Basic Research Needs for Materials Under Extreme Environments. Report of the Basic Energy Sciences Workshop on Materials Under Extreme Environments, June 11-13, 2007  

SciTech Connect

To evaluate the potential for developing revolutionary new materials that will meet demanding future energy requirements that expose materials to environmental extremes.

Wadsworth, J.; Crabtree, G. W.; Hemley, R. J.; Falcone, R.; Robertson, I.; Stringer, J.; Tortorelli, P.; Gray, G. T.; Nicol, M.; Lehr, J.; Tozer, S. W.; Diaz de la Rubia, T.; Fitzsimmons, T.; Vetrano, J. S.; Ashton, C. L.; Kitts, S.; Landson, C.; Campbell, B.; Gruzalski, G.; Stevens, D.

2008-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

VARIABILITY OF THE INFRARED EXCESS OF EXTREME DEBRIS DISKS  

SciTech Connect

Debris disks with extremely large infrared excesses (fractional luminosities >10{sup -2}) are rare. Those with ages between 30 and 130 Myr are of interest because their evolution has progressed well beyond that of protoplanetary disks (which dissipate with a timescale of order 3 Myr), yet they represent a period when dynamical models suggest that terrestrial planet building may still be progressing through large, violent collisions that could yield large amounts of debris and large infrared excesses. For example, our Moon was formed through a violent collision of two large protoplanets during this age range. We report two disks around the solar-like stars ID8 and HD 23514 in this age range where the 24 {mu}m infrared excesses vary on timescales of a few years, even though the stars are not variable in the optical. Variations this rapid are difficult to understand if the debris is produced by collisional cascades, as it is for most debris disks. It is possible that the debris in these two systems arises in part from condensates from silicate-rich vapor produced in a series of violent collisions among relatively large bodies. If their evolution is rapid, the rate of detection of extreme excesses would indicate that major collisions may be relatively common in this age range.

Meng, Huan Y. A.; Rieke, George H. [Department of Planetary Sciences, Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721 (United States); Su, Kate Y. L.; Rujopakarn, Wiphu [Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States); Ivanov, Valentin D. [European Southern Observatory, Ave. Alonso de Cordova 3107, Casilla 19, Santiago, 19001 (Chile); Vanzi, Leonardo [Department of Electrical Engineering and Center of Astro Engineering, Pontificia Universidad Catolica de Chile, Ave. Vicuna Mackenna 4860, Santiago (Chile)

2012-05-20T23:59:59.000Z

402

Characterization and Impact of Extreme Forecast Errors on Power Systems  

SciTech Connect

Extreme events in the electrical power system, caused by the load and wind forecasting errors, can impact the power system infrastructure via two main avenues. The first avenue is a sudden and significant power unbalance exceeding reasonable operating reserve capacity. The second is a sudden increase of power flows on the system critical paths causing transmission violations. The challenge in managing these system unbalances is more significant for a standalone balancing area operation. The consolidation of balancing authorities into a single balancing area can offset the operating reserve problem but this strategy enhances incremental power flows on the transmission interfaces, potentially leading to more unpredictable transmission congestion. This paper evaluates the expectancy of occurrence of tail events due to forecast error extremes using California ISO and BPA data. Having this type of information, independent system operators and operating utilities could be better prepared to address the tail events by exploring alternative reserve options such as: wide area control coordination, new operating proce-dures and remedial actions.

Heydt, Gerald T.; Vittal, Vijay; Malhara, Sunita V.; Makarov, Yuri V.; Zhou, Ning; Etingov, Pavel V.

2011-12-15T23:59:59.000Z

403

Recent Advances in Regional Climate System Modeling and ClimateChange Analyses of Extreme Heat  

Science Conference Proceedings (OSTI)

During the period May 2003 to May 2004, there were two CEC/PIER funded primary research activities by the Atmosphere and Ocean Sciences Group/Earth Science Division at LBNL. These activities are the implementation and testing of the National Center for Atmospheric Research Community Land Model (CLM) into MM5, and the analysis of extreme heat days under a new set of climate simulations. The new version of MM5,MM5-CLM, has been tested for a 90 day snowmelt period in the northwestern U.S. Results show that this new code upgrade, as compared to the MM5-NOAH, has improved snowmelt, temperature, and precipitation when compared to observations. These are due in part to a subgrid scheme,advanced snow processes, and advanced vegetation. The climate change analysis is the upper and lower IPCC Special Report on Emission Scenarios, representing fossil fuel intensive and energy conserving future emission scenarios, and medium and low sensitivity Global Climate Models. Results indicate that California cities will see increases in the number of heat wave and temperature threshold days from two to six times.These results may be viewed as potential outcomes based on today's decisions on emissions.

Miller, Norman L.

2004-09-24T23:59:59.000Z

404

Method for Synthesizing Extremeley High Temperature Melting Materials  

DOE Patents (OSTI)

The invention relates to a method of synthesizing high-temperature melting materials. More specifically the invention relates to a containerless method of synthesizing very high temperature melting materials such as borides, carbides and transition-metal, lanthanide and actinide oxides, using an Aerodynamic Levitator and a laser. The object of the invention is to provide a method for synthesizing extremely high-temperature melting materials that are otherwise difficult to produce, without the use of containers, allowing the manipulation of the phase (amorphous/crystalline/metastable) and permitting changes of the environment such as different gaseous compositions.

Saboungi, Marie-Louise and Glorieux, Benoit

2005-11-22T23:59:59.000Z

405

Cooled, temperature controlled electrometer  

DOE Patents (OSTI)

A cooled, temperature controlled electrometer for the measurement of small currents. The device employs a thermal transfer system to remove heat from the electrometer circuit and its environment and dissipate it to the external environment by means of a heat sink. The operation of the thermal transfer system is governed by a temperature regulation circuit which activates the thermal transfer system when the temperature of the electrometer circuit and its environment exceeds a level previously inputted to the external variable temperature control circuit. The variable temperature control circuit functions as subpart of the temperature control circuit. To provide temperature stability and uniformity, the electrometer circuit is enclosed by an insulated housing.

Morgan, John P. (Idaho Falls, ID)

1992-01-01T23:59:59.000Z

406

Calculation of Extreme Wave Loads on Coastal Highway Bridges  

E-Print Network (OSTI)

Coastal bridges are exposed to severe wave, current and wind forces during a hurricane. Most coastal bridges are not designed to resist wave loads in such extreme situations, and there are no existing analytical methods to calculate wave loads on coastal highway bridges. This study focuses on developing a new scheme to estimate the extreme wave loads on bridges for designing purpose. In order to do this, a 2D wave velocity potential model (2D Model) is set up for the deterministic analysis of wave force on bridge decks. 2D Model is a linear wave model, which has the capability of calculating wave velocity potential components in time domain based on wave parameters such as wave height, wave period and water depth, and complex structural geometries. 2D Model has Laplace equation as general equation. The free surface boundary, incoming and outgoing wave boundary conditions are linearized, decomposed first, and then solved by the finite difference method. Maximum wave forces results calculated by the linear 2D Model are compared with results from CFD software Flow3D that is using Navier Stokes theory up to the 5th order; and 2D Model is validated by comparing results with experiment data. A case study is conducted for calculating extreme wave forces on I-10 Bridge across Escambia Bay, Florida during Hurricane Ivan in September 2004.SWAN model is adapted to investigate the parameters of wave heights and wave periods around bridge sites. SWAN model has the capability of predicting or hindcasting significant wave heights and wave periods as long as the domain and input parameters are given. The predicted significant wave heights are compared with measurements by Buoy Station 42039 and 42040 nearest to Escambia Bay. A new prediction equation of maximum uplift wave forces on bridge decks is developed in terms of wave height, wave period, water depth, bridge width, water clearance and over top water load. To develop the equations, the relationship is investigated between maximum uplift wave forces and wave parameters, water clearance, green water effects and bridge width. 2D Model is used for up to 1886 cases with difference parameters. Flow3D model is adopted to determine coefficients of water clearance and green water effects, which cannot be calculated by 2D Model.

Meng, Bo

2008-12-01T23:59:59.000Z

407

High temperature furnace  

DOE Patents (OSTI)

A high temperature furnace for use above 2000.degree.C is provided that features fast initial heating and low power consumption at the operating temperature. The cathode is initially heated by joule heating followed by electron emission heating at the operating temperature. The cathode is designed for routine large temperature excursions without being subjected to high thermal stresses. A further characteristic of the device is the elimination of any ceramic components from the high temperature zone of the furnace.

Borkowski, Casimer J. (Oak Ridge, TN)

1976-08-03T23:59:59.000Z

408

Decision support for improvisation in response to extreme events: Learning from the response to the 2001 World Trade Center attack  

Science Conference Proceedings (OSTI)

Extreme events such as natural or technological disasters challenge society's capabilities for planning and response. While advanced technologies and modeling techniques continue to expand how society can limit and manage extreme events, flexibility ... Keywords: Emergency response, Extreme events, Improvisation

David Mendona

2007-04-01T23:59:59.000Z

409

ACTIVE REGION MOSS: DOPPLER SHIFTS FROM HINODE/EXTREME-ULTRAVIOLET IMAGING SPECTROMETER OBSERVATIONS  

Science Conference Proceedings (OSTI)

Studying the Doppler shifts and the temperature dependence of Doppler shifts in moss regions can help us understand the heating processes in the core of the active regions. In this paper, we have used an active region observation recorded by the Extreme-ultraviolet Imaging Spectrometer (EIS) on board Hinode on 2007 December 12 to measure the Doppler shifts in the moss regions. We have distinguished the moss regions from the rest of the active region by defining a low-density cutoff as derived by Tripathi et al. in 2010. We have carried out a very careful analysis of the EIS wavelength calibration based on the method described by Young et al. in 2012. For spectral lines having maximum sensitivity between log T = 5.85 and log T = 6.25 K, we find that the velocity distribution peaks at around 0 km s{sup -1} with an estimated error of 4-5 km s{sup -1}. The width of the distribution decreases with temperature. The mean of the distribution shows a blueshift which increases with increasing temperature and the distribution also shows asymmetries toward blueshift. Comparing these results with observables predicted from different coronal heating models, we find that these results are consistent with both steady and impulsive heating scenarios. However, the fact that there are a significant number of pixels showing velocity amplitudes that exceed the uncertainty of 5 km s{sup -1} is suggestive of impulsive heating. Clearly, further observational constraints are needed to distinguish between these two heating scenarios.

Tripathi, Durgesh [Inter-University Centre for Astronomy and Astrophysics, Pune University Campus, Pune 411007 (India); Mason, Helen E. [Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom); Klimchuk, James A. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2012-07-01T23:59:59.000Z

410

Size-Related Behavior of Anatase Nanocrystals under Extreme Pressure |  

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

Boron-Based Compounds Trick a Biomedical Protein Boron-Based Compounds Trick a Biomedical Protein A Targeted Cancer Treatment using Nanomaterials When Roots Follow the Path of Least Resistance Perfecting Catalytic Arrays A Stable Open Framework with Wide Open Spaces Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Size-Related Behavior of Anatase Nanocrystals under Extreme Pressure SEPTEMBER 27, 2009 Bookmark and Share Left: A polyhedral representation of the anatase TiO2 crystal structure. Right: Simplified relative cell parameter plots. The smoothly varying curves (+ diamond symbols) represent gold that was used as the pressure standard. The circles represent the 6-nm anatase. From the near vacuum of outer space to the intense pressure at a planet's

411

Extremal black attractors in 8D maximal supergravity  

SciTech Connect

Motivated by the new higher D-supergravity solutions on intersecting attractors obtained by Ferrara et al. in [Phys. Rev. D 79, 065031 (2009)], we focus in this paper on 8D maximal supergravity with moduli space (SL(3,R)/SO(3))x(SL(2,R)/SO(2)) and study explicitly the attractor mechanism for various configurations of extremal black p-branes (antibranes) with the typical near horizon geometries AdS{sub p+2}xS{sup m}xT{sup 6-p-m} and p=0, 1, 2, 3, 4; 2{<=}m{<=}6. Interpretations in terms of wrapped M2 and M5 branes of the 11D M-theory on 3-torus are also given.

Drissi, L. B [INANOTECH, Institute of Nanomaterials and Nanotechnology (Morocco); Hassani, F. Z; Jehjouh, H. [Lab/UFR-High Energy Physics, Faculty of Science, Rabat (Morocco) and GNPHE; Groupement National de Physique des Hautes Energies (Morocco); Saidi, E. H [INANOTECH, Institute of Nanomaterials and Nanotechnology (Morocco) and Lab/UFR-High Energy Physics; Faculty of Science, Rabat (Morocco); GNPHE, Groupement National de Physique des Hautes Energies (Morocco)

2010-05-15T23:59:59.000Z

412

THE EXTREME-ULTRAVIOLET EMISSION FROM SUN-GRAZING COMETS  

SciTech Connect

The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory has observed two Sun-grazing comets as they passed through the solar atmosphere. Both passages resulted in a measurable enhancement of extreme-ultraviolet (EUV) radiance in several of the AIA bandpasses. We explain this EUV emission by considering the evolution of the cometary atmosphere as it interacts with the ambient solar atmosphere. Molecules in the comet rapidly sublimate as it approaches the Sun. They are then photodissociated by the solar radiation field to create atomic species. Subsequent ionization of these atoms produces a higher abundance of ions than normally present in the corona and results in EUV emission in the wavelength ranges of the AIA telescope passbands.

Bryans, P. [ADNET Systems Inc., NASA Goddard Space Flight Center, Code 671, Greenbelt, MD 20771 (United States); Pesnell, W. D. [NASA Goddard Space Flight Center, Code 671, Greenbelt, MD 20771 (United States)

2012-11-20T23:59:59.000Z

413

APPROACH TO EXTREME-SCALE SIMULATION OF NOVEL ARCHITECTURES  

SciTech Connect

We outline an approach for simulating computing architectures applicable to extreme-scale systems (thousands of processors) and to advanced, novel architectural configurations. We believe that simulation is the predictive tool of choice for evaluating the performance of such systems. Our component-based design allows for the seamless assembly of architectures from representations of workload, processor, network interface, switches, etc., with disparate resolutions into an integrated simulation model. This accommodates different case studies that may require different levels of fidelity in various parts of a system. Our initial prototype, comprising low-fidelity models of workload and network, aims to model at least 4096 computational nodes in a fat-tree network. It supports studies of simulation performance and scaling rather than the properties of the simulated system themselves. Future work will allow more realistic simulation and visualization of ASCI-like workloads on very large machines.

Alexander, F. J. (Francis J.); Berkbigler, K. P. (Kathryn P.); Booker, G. (Graham)

2001-01-01T23:59:59.000Z

414

Amplitude variations on the Extreme Adaptive Optics testbed  

Science Conference Proceedings (OSTI)

High-contrast adaptive optics systems, such as those needed to image extrasolar planets, are known to require excellent wavefront control and diffraction suppression. At the Laboratory for Adaptive Optics on the Extreme Adaptive Optics testbed, we have already demonstrated wavefront control of better than 1 nm rms within controllable spatial frequencies. Corresponding contrast measurements, however, are limited by amplitude variations, including those introduced by the micro-electrical-mechanical-systems (MEMS) deformable mirror. Results from experimental measurements and wave optic simulations of amplitude variations on the ExAO testbed are presented. We find systematic intensity variations of about 2% rms, and intensity variations with the MEMS to be 6%. Some errors are introduced by phase and amplitude mixing because the MEMS is not conjugate to the pupil, but independent measurements of MEMS reflectivity suggest that some error is introduced by small non-uniformities in the reflectivity.

Evans, J; Thomas, S; Dillon, D; Gavel, D; Phillion, D; Macintosh, B

2007-08-14T23:59:59.000Z

415

Mid-Infrared Instrumentation for the European Extremely Large Telescope  

E-Print Network (OSTI)

MIDIR is the proposed thermal/mid-IR imager and spectrograph for the European Extremely Large Telescope (E-ELT). It will cover the wavelength range of 3 to at least 20 microns. Designed for diffraction-limited performance over the entire wavelength range, MIDIR will require an adaptive optics system; a cryogenically cooled system could offer optimal performance in the IR, and this is a critical aspect of the instrument design. We present here an overview of the project, including a discussion of MIDIR's science goals and a comparison with other infrared (IR) facilities planned in the next decade; top level requirements derived from these goals are outlined. We describe the optical and mechanical design work carried out in the context of a conceptual design study, and discuss some important issues to emerge from this work, related to the design, operation and calibration of the instrument. The impact of telescope optical design choices on the requirements for the MIDIR instrument is demonstrated.

S. Kendrew; B. Brandl; R. Lenzen; L. Venema; H. U. Kufl; G. Finger; A. Glasse; R. Stuik

2007-08-23T23:59:59.000Z

416

FRONTIER SYNCHROTRON INFRARED SPECTROSCOPY BEAMLINE UNDER EXTREME CONDITIONS (FIS)  

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

FRONTIER SYNCHROTRON INFRARED SPECTROSCOPY FRONTIER SYNCHROTRON INFRARED SPECTROSCOPY BEAMLINE UNDER EXTREME CONDITIONS (FIS) Proposal Team: L. Carr 1 , D. Dolan 2 , R. Hemley 3 , S. Jacobson 4 , S. Karato 5 , Z. Liu 3 , W. Panero 6 , M. Pravica 7 , and T. Zhou 8 1 Brookhaven National Laboratory, 2 Sandia National Laboratories, 3 Carnegie Institution of Washington, 4 Northwestern University, 5 Yale University, 6 Ohio State University, 7 University of Nevada, 8 New Jersey Institute of Technology TECHNIQUES AND CAPABILITIES APPLICATIONS SPECIFIC PROJECTS / ADDITIONAL INFORMATION * TECHNIQUE(S): Fourier transform infrared spectroscopy; Raman and visible spectroscopy; Diamond anvil cell techniques for static high pressure; Gas-gun launchers for dynamic compression; Cryogenic techniques combined with DACs;

417

Enzymatic temperature change indicator  

DOE Patents (OSTI)

A temperature change indicator is described which is composed of an enzyme and a substrate for that enzyme suspended in a solid organic solvent or mixture of solvents as a support medium. The organic solvent or solvents are chosen so as to melt at a specific temperature or in a specific temperature range. When the temperature of the indicator is elevated above the chosen, or critical temperature, the solid organic solvent support will melt, and the enzymatic reaction will occur, producing a visually detectable product which is stable to further temperature variation.

Klibanov, Alexander M. (Newton, MA); Dordick, Jonathan S. (Iowa City, IA)

1989-01-21T23:59:59.000Z

418

Numerical methods for particle simulations at extreme densities and temperatures: Weighted particles, relativistic collisions and reduced currents  

Science Conference Proceedings (OSTI)

We present a fully relativistic energy-conserving binary collision model for particle simulations with large density scale plasmas. Our model deals with collisions between weighted particles of arbitrary species, conserving energy perfectly in each collision ... Keywords: Binary collision, PIC, Weighted particles

Y. Sentoku; A. J. Kemp

2008-07-01T23:59:59.000Z

419

Yeast and Temperature  

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

Yeast and Temperature Yeast and Temperature Name: Alyssaaum Location: N/A Country: N/A Date: N/A Question: How does temperature affect yeast? Replies: Dear Alyssa, At low temperatures (0-10 C) yeast will not grow, but not die either. At temperatures 10-37 C yeast will grow and multiply, faster at higher temperatures with an optimal growth at 30 or 37 C (that depends on the species). At higher temperature the cells become stressed, meaning that their content becomes damaged and which can be repaired to some degree. At high temperatures (>50 C) the cells die. The bacteria can survive freezing under certain conditions. When baking bread all yeast dies during the process. Dr. Trudy Wassenaar yeast is a unique type of fungi that grows quickly by rapid cell division. It grows best at about 100 degrees fahrenheit, colder will cause it to go dormant, much warmer could kill it

420

Climatic Temperature Normals  

Science Conference Proceedings (OSTI)

The published 195180 daily normals of maximum and minimum temperatures were prepared by interpolating between average monthly values. This study compares the published normal and 30-yr average daily temperatures in the eastern half of the United ...

Nathaniel B. Guttman; Marc S. Plantico

1987-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" from the National Library of EnergyBeta (NLEBeta).
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421

Hygrometry with Temperature Stabilization  

Science Conference Proceedings (OSTI)

A method is presented for stabilizing the temperature of air to allow the use of temperature-sensitive, humidity sensors for direct determination of an invariant humidity characteristic such as specific humidity and/or its fluctuations. Problems ...

Krzysztof E. Haman; Andrzej M. Makulski

1985-12-01T23:59:59.000Z

422

Temperature Variability over Africa  

Science Conference Proceedings (OSTI)

The variation of near-surface air temperature anomalies in Africa between 1979 and 2010 is investigated primarily using Microwave Sounding Unit (MSU) total lower-tropospheric temperature data from the Remote Sensing Systems (RSS) and the ...

Jennifer M. Collins

2011-07-01T23:59:59.000Z

423

Fish and Temperature  

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

Fish and Temperature Name: Christopher Location: NA Country: NA Date: NA Question: Dear Sirs, I am doing a project on a sand tiger shark and i was wondering if temperature...

424

Thermoelectric refrigerator having improved temperature-stabilization means  

DOE Patents (OSTI)

A control system for thermoelectric refrigerators is disclosed. The thermoelectric refrigerator includes at least one thermoelectric element that undergoes a first order change at a predetermined critical temperature. The element functions as a thermoelectric refrigerator element above the critical temperature but discontinuously ceases to function as a thermoelectric refrigerator element below the critical temperature. One example of such an arrangement includes thermoelectric refrigerator elements which are superconductors. The transition temperature of one of the superconductor elements is selected as the temperature control point of the refrigerator. When the refrigerator attempts to cool below the point, the metals become superconductors losing their ability to perform as a thermoelectric refrigerator. An extremely accurate, first-order control is realized.

Falco, C.M.

1981-07-29T23:59:59.000Z

425

Anisotropic Curie Temperature Materials  

Science Conference Proceedings (OSTI)

Symposium, Magnetic Materials for Energy Applications -III. Presentation Title, Anisotropic Curie Temperature Materials. Author(s), Harsh Deep Chopra, Jason...

426

Temperature profile detector  

DOE Patents (OSTI)

Temperature profiles at elevated temperature conditions are monitored by use of an elongated device having two conductors spaced by the minimum distance required to normally maintain an open circuit between them. The melting point of one conductor is selected at the elevated temperature being detected, while the melting point of the other is higher. As the preselected temperature is reached, liquid metal will flow between the conductors, creating short circuits which are detectable as to location.

Tokarz, Richard D. (West Richland, WA)

1983-01-01T23:59:59.000Z

427

Temperature-profile detector  

DOE Patents (OSTI)

Temperature profiles at elevated temperature conditions are monitored by use of an elongated device having two conductors spaced by the minimum distance required to normally maintain an open circuit between them. The melting point of one conductor is selected at the elevated temperature being detected, while the melting point of the other is higher. As the preselected temperature is reached, liquid metal will flow between the conductors creating short circuits which are detectable as to location.

Not Available

1981-01-29T23:59:59.000Z

428

Temperature discovery search  

Science Conference Proceedings (OSTI)

Temperature Discovery Search (TDS) is a new minimax-based game tree search method designed to compute or approximate the temperature of a combinatorial game. TDS is based on the concept of an enriched environment, where a combinatorial game G ... Keywords: ?? algorithm, amazons, combinatorial games, go, temperature discovery search

Martin Mller; Markus Enzenberger; Jonathan Schaeffer

2004-07-01T23:59:59.000Z

429

High temperature sensor  

DOE Patents (OSTI)

A high temperature sensor includes a pair of electrical conductors separated by a mass of electrical insulating material. The insulating material has a measurable resistivity within the sensor that changes in relation to the temperature of the insulating material within a high temperature range (1,000 to 2,000 K.). When required, the sensor can be encased within a ceramic protective coating.

Tokarz, Richard D. (West Richland, WA)

1982-01-01T23:59:59.000Z

430

Winter Morning Air Temperature  

Science Conference Proceedings (OSTI)

Results of temperature measurements, which may be applied to inference of winter temperatures in data-sparse areas, are presented. The morning air temperatures during three winters were measured at 80 places in a 10 km 30 km area along the ...

A. Hogan; M. Ferrick

1997-01-01T23:59:59.000Z

431

ExM: System Support for Extreme-Scale, Many-Task Applications | Argonne  

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

ExM: System Support for Extreme-Scale, Many-Task Applications ExM: System Support for Extreme-Scale, Many-Task Applications ExM: System Support for Extreme-Scale, Many-Task Applications ExM (Exascale Many-task) focuses on a novel stack of system services that will enable a broader range of applications to be easily developed and efficiently executed on extreme-scale platforms. The ExM middleware stack supports a highly parallel, functional data model that exposes and automates the many levels of execution needed to efficiently leverage extreme-scale computing systems for complex, many-task applications. The goal of the ExM project is to achieve the technical advances required to execute many-task applications efficiently, reliably, and easily on petascale and exascale computers. In this way, extreme-scale computing will

432

BAL QSOs and Extreme UFOs: the Eddington connection  

E-Print Network (OSTI)

We suggest a common physical origin connecting the fast, highly ionized winds (UFOs) seen in nearby AGN, and the slower and less ionized winds of BAL QSOs. The primary difference is the mass loss rate in the wind, which is ultimately determined by the rate at which mass is fed towards the central supermassive black hole (SMBH) on large scales. This is below the Eddington accretion rate in most UFOs, and slightly super-Eddington in extreme UFOs such as PG1211+143, but ranges up to $\\sim 10-50$ times this in BAL QSOs. For UFOs this implies black hole accretion rates and wind mass loss rates which are at most comparable to Eddington, giving fast, highly-ionized winds. In contrast BAL QSO black holes have mildly super-Eddington accretion rates, and drive winds whose mass loss rates are significantly super-Eddington, and so are slower and less ionized. This picture correctly predicts the velocities and ionization states of the observed winds, including the recently-discovered one in SDSS J1106+1939. We suggest tha...

Zubovas, Kastytis

2013-01-01T23:59:59.000Z

433

Chemistry of H2O and HF Under Extreme Conditions  

DOE Green Energy (OSTI)

The predicted high pressure superionic phases of water and HF are investigated via ab initio molecular dynamics. These phases could potentially be achieved through either static compression with heating or through shock compression. We study water at densities of 2.0-3.0 g/cc (34-115 GPa) along the 2000K isotherm.We find that extremely rapid (superionic) diffusion of protons occurs in a fluid phase at pressures between 34 and 58 GPa. A transition to a stable body-centered cubic (bcc) O lattice with superionic proton conductivity is observed between 70 and 75 GPa, a much higher pressure than suggested in prior work. We find that all molecular species at pressures greater than 75 GPa are too short lived to be classified as bound states. Up to 95 GPa, we find a solid superionic phase characterized by covalent O-H bonding. Above 95 GPa, a transient network phase is found characterized by symmetric O-H hydrogen bonding with nearly 50% covalent character. Ab initio molecular dynamics simulations of HF were conducted at densities of 1.8-4.0 g/cc along the 900 K isotherm. According to our simulations, a unique form of (symmetric) hydrogen bonding could play a significant role in superionic conduction. Our work shows that superionic phases could be more prevalent in hydrogen bonded systems than previously thought, such as HCl and HBr.

Fried, L; Goldman, N; Kuo, I W; Mundy, C

2005-11-28T23:59:59.000Z

434

Challenges in optics for Extremely Large Telescope instrumentation  

E-Print Network (OSTI)

We describe and summarize the optical challenges for future instrumentation for Extremely Large Telescopes (ELTs). Knowing the complex instrumental requirements is crucial for the successful design of 30-60m aperture telescopes. After all, the success of ELTs will heavily rely on its instrumentation and this, in turn, will depend on the ability to produce large and ultra-precise optical components like light-weight mirrors, aspheric lenses, segmented filters, and large gratings. New materials and manufacturing processes are currently under study, both at research institutes and in industry. In the present paper, we report on its progress with particular emphasize on volume-phase-holographic gratings, photochromic materials, sintered silicon-carbide mirrors, ion-beam figuring, ultra-precision surfaces, and free-form optics. All are promising technologies opening new degrees of freedom to optical designers. New optronic-mechanical systems will enable efficient use of the very large focal planes. We also provide exploratory descriptions of "old" and "new" optical technologies together with suggestions to instrument designers to overcome some of the challenges placed by ELT instrumentation.

P. Span; F. M. Zerbi; C. J. Norrie; C. R. Cunningham; K. G. Strassmeier; A. Bianco; P. A. Blanche; M. Bougoin; M. Ghigo; P. Hartmann; L. Zago; E. Atad-Ettedgui; B. Delabre; H. Dekker; M. Melozzi; B. Snyders; R. Takke; D. D. Walker

2006-03-28T23:59:59.000Z

435

Sources for Low Energy Extreme of Ion Implantation  

SciTech Connect

A joint research and development effort focusing on the design of steady state, intense ion sources has been in progress for the past four and a half years. The ultimate goal is to meet the two, energy extreme range needs of mega-electron-volt and 100's of electron-volt ion implanters. This endeavor has resulted in record steady state output currents of higher charge state Antimony and Phosphorous ions: P{sup 2+}(8.6 pmA), P{sup 3+}(1.9 pmA), and P{sup 4+}(0.12 pmA) and 16.2, 7.6, 3.3, and 2.2 pmA of Sb{sup 3+} Sb{sup 4+}, Sb{sup 5+}, and Sb{sup 6+} respectively. During the past year the effort was channeled towards low energy implantation, for which the effort involved molecular ions and a novel plasmaless/gasless deceleration method. To date, 3 emA of positive Decaborane ions were extracted at 14 keV and a smaller current of negative Decaborane ions were also extracted. Additionally, a Boron fraction of over 70% was extracted from a Bernas-Calutron ion source.

Hershcovitch, A.; Johnson, B. M. [Brookhaven National Laboratory, Upton, New York 11973 (United States); Batalin, V. A.; Kolomiets, A. A.; Kropachev, G. N.; Kuibeda, R. P.; Kulevoy, T. V.; Pershin, V. I.; Petrenko, S. V.; Rudskoy, I.; Seleznev, D. N. [Institute for Theoretical and Experimental Physics, Moscow (Russian Federation); Bugaev, A. S.; Gushenets, V. I.; Oks, E. M.; Yushkov, G. Yu. [High Current Electronics Institute Russian Academy of Sciences, Tomsk, 634055 (Russian Federation); Masunov, E. S.; Polozov, S. M. [Moscow Engineering Physics Institute, Kashirskoe sh. 31, Moscow, 115409 (Russian Federation); Poole, H. J. [PVI, Oxnard, California 93031-5023 (United States); Storozhenko, P. A. [State Research Institute for Chemistry and Technology of Organoelement Compounds 38, sh. Entuziastov, Moscow, 111123 (Russian Federation); Svarovski, A. Ya. [Siberian Divisions of Russian National Research Center 'A.A. Bochvara Scientific Research Institute for Inorganic Materials', Seversk, 636070 (Russian Federation)

2008-11-03T23:59:59.000Z

436

ION SOURCES FOR ENERGY EXTREMES OF ION IMPLANTATION.  

SciTech Connect

For the past four years a joint research and development effort designed to develop steady state, intense ion sources has been in progress with the ultimate goal to develop ion sources and techniques, which meet the two energy extreme range needs of mega-electron-volt and 100's of electron-volt ion implanters. This endeavor has already resulted in record steady state output currents of high charge state of Antimony and Phosphorous ions: P{sup 2+} (8.6 pmA), P{sup 3+} (1.9 pmA), and P{sup 4+} (0.12 pmA) and 16.2, 7.6, 3.3, and 2.2 pmA of Sb{sup 3+} Sb{sup 4+}, Sb{sup 5+}, and Sb{sup 6+} respectively. For low energy ion implantation our efforts involve molecular ions and a novel plasmaless/gasless deceleration method. To date, 1 emA of positive Decaborane ions were extracted at 10 keV and smaller currents of negative Decaborane ions were also extracted. Additionally, Boron current fraction of over 70% was extracted from a Bemas-Calutron ion source, which represents a factor of 3.5 improvement over currently employed ion sources.

HERSCHCOVITCH,A.; JOHNSON, B.M.; BATALIN, V.A.; KROPACHEV, G.N.; KUIBEDA, R.P.; KULEVOY, T.V.; KOLOMIETS, A.A.; PERSHIN, V.I.; PETRENKO, S.V.; RUDSKOY, I.; SELEZNEV, D.N.; BUGAEV, A.S.; GUSHENETS, V.I.; LITOVKO, I.V.; OKS, E.M.; YUSHKOV, G. YU.; MASEUNOV, E.S.; POLOZOV, S.M.; POOLE, H.J.; STOROZHENKO, P.A.; SVAROVSKI, YA.

2007-08-26T23:59:59.000Z

437

Generation of extreme state of water by spherical wire array underwater electrical explosion  

SciTech Connect

The results of the first experiments on the underwater electrical explosion of a spherical wire array generating a converging strong shock wave are reported. Using a moderate pulse power generator with a stored energy of {<=}6 kJ and discharge current of {<=}500 kA with a rise-time of {approx}300 ns, explosions of Cu and Al wire arrays of different diameters and with a different number and diameter of wires were tested. Electrical, optical, and destruction diagnostics were used to determine the energy deposited into the array, the time-of-flight of the shock wave to the origin of the implosion, and the parameters of water at that location. The experimental and numerical simulation results indicate that the convergence of the shock wave leads to the formation of an extreme state of water in the vicinity of the implosion origin that is characterized by pressure, temperature, and compression factors of (2 {+-} 0.2) Multiplication-Sign 10{sup 12} Pa, 8 {+-} 0.5 eV, and 7 {+-} 0.5, respectively.

Antonov, O.; Gilburd, L.; Efimov, S.; Bazalitski, G.; Gurovich, V. Tz.; Krasik, Ya. E. [Physics Department, Technion, Haifa 3200 (Israel)

2012-10-15T23:59:59.000Z

438

Temperature compensated photovoltaic array  

DOE Patents (OSTI)

A temperature compensated photovoltaic module (20) comprised of a series of solar cells (22) having a thermally activated switch (24) connected in parallel with several of the cells (22). The photovoltaic module (20) is adapted to charge conventional batteries having a temperature coefficient (TC) differing from the temperature coefficient (TC) of the module (20). The calibration temperatures of the switches (24) are chosen whereby the colder the ambient temperature for the module (20), the more switches that are on and form a closed circuit to short the associated solar cells (22). By shorting some of the solar cells (22) as the ambient temperature decreases, the battery being charged by the module (20) is not excessively overcharged at lower temperatures. PV module (20) is an integrated solution that is reliable and inexpensive.

Mosher, Dan Michael (Plano, TX)

1997-11-18T23:59:59.000Z

439

Temperature compensated photovoltaic array  

DOE Patents (OSTI)

A temperature compensated photovoltaic module comprises a series of solar cells having a thermally activated switch connected in parallel with several of the cells. The photovoltaic module is adapted to charge conventional batteries having a temperature coefficient differing from the temperature coefficient of the module. The calibration temperatures of the switches are chosen whereby the colder the ambient temperature for the module, the more switches that are on and form a closed circuit to short the associated solar cells. By shorting some of the solar cells as the ambient temperature decreases, the battery being charged by the module is not excessively overcharged at lower temperatures. PV module is an integrated solution that is reliable and inexpensive. 2 figs.

Mosher, D.M.

1997-11-18T23:59:59.000Z

440

Climate Change, High-Temperature Stress, Rice Productivity, and Water Use in Eastern China: A New Superensemble-Based Probabilistic Projection  

Science Conference Proceedings (OSTI)

The impact of climate change on rice productivity in China remains highly uncertain because of uncertainties from climate change scenarios, parameterizations of biophysical processes, and extreme temperature stress in crop models. Here, the Model ...

Fulu Tao; Zhao Zhang

2013-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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-temperature alloys for high-power thermionic systems  

DOE Green Energy (OSTI)

The need for structural materials with useful strength above 1600 k has stimulated interest in refractory-metal alloys. Tungsten possesses an extreme high modulus of elasticity as well as the highest melting temperature among metals, and hence is being considered as one of the most promising candidate materials for high temperature structural applications such as space nuclear power systems. This report is divided into three chapters covering the following: (1) the processing of tungsten base alloys; (2) the tensile properties of tungsten base alloys; and (3) creep behavior of tungsten base alloys. Separate abstracts were prepared for each chapter. (SC)

Shin, Kwang S.; Jacobson, D.L.; D'cruz, L.; Luo, Anhua; Chen, Bor-Ling.

1990-08-01T23:59:59.000Z

442

Automatic temperature control  

Science Conference Proceedings (OSTI)

An automatic temperature control system is described for maintaining a preset temperature in an enclosed space in a building, comprising: heating and cooling means for conditioning the air in the enclosed space to maintain the preset temperature; exterior thermostat means outside the building for sensing ambient exterior temperature levels; interior thermostat means in the enclosed space, preset to the preset temperature to be maintained and connected with the heating and cooling means to energize the means for heating or cooling, as appropriate, when the preset temperature is reached; means defining a heat sink containing a volume of air heated by solar radiation, the volume of the heat sink being such that the temperature level therein is not affected by minor or temporary ambient temperature fluctuations; and heat sink thermostat means in the heat sink sensing the temperature in the heat sink, the heat sink thermostat means being connected in tandem with the exterior thermostat means and operative with the exterior thermostat means to switch the interior thermostat means to either a first readiness state for heating or a second readiness state for cooling, depending upon which mode is indicated by both the exterior and heat sink thermostat means, whereby the system automatically switches between heating and cooling, as required, in response to a comparison of exterior and heat sink temperatures.

Sheridan, J.P.

1986-07-22T23:59:59.000Z

443

NEW SOLAR EXTREME-ULTRAVIOLET IRRADIANCE OBSERVATIONS DURING FLARES  

Science Conference Proceedings (OSTI)

New solar extreme-ultraviolet (EUV) irradiance observations from the NASA Solar Dynamics Observatory (SDO) EUV Variability Experiment provide full coverage in the EUV range from 0.1 to 106 nm and continuously at a cadence of 10 s for spectra at 0.1 nm resolution and even faster, 0.25 s, for six EUV bands. These observations can be decomposed into four distinct characteristics during flares. First, the emissions that dominate during the flare's impulsive phase are the transition region emissions, such as the He II 30.4 nm. Second, the hot coronal emissions above 5 MK dominate during the gradual phase and are highly correlated with the GOES X-ray. A third flare characteristic in the EUV is coronal dimming, seen best in the cool corona, such as the Fe IX 17.1 nm. As the post-flare loops reconnect and cool, many of the EUV coronal emissions peak a few minutes after the GOES X-ray peak. One interesting variation of the post-eruptive loop reconnection is that warm coronal emissions (e.g., Fe XVI 33.5 nm) sometimes exhibit a second large peak separated from the primary flare event by many minutes to hours, with EUV emission originating not from the original flare site and its immediate vicinity, but rather from a volume of higher loops. We refer to this second peak as the EUV late phase. The characterization of many flares during the SDO mission is provided, including quantification of the spectral irradiance from the EUV late phase that cannot be inferred from GOES X-ray diagnostics.

Woods, Thomas N.; Hock, Rachel; Eparvier, Frank; Jones, Andrew R. [Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303 (United States); Chamberlin, Phillip C.; Klimchuk, James A. [NASA Goddard Space Flight Center, Solar Physics Laboratory, Greenbelt, MD 20771 (United States); Didkovsky, Leonid; Judge, Darrell [Space Sciences Center, University of Southern California, Los Angeles, CA 90089 (United States); Mariska, John; Warren, Harry [Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States); Schrijver, Carolus J. [Lockheed Martin Solar and Astrophysics Laboratory, Palo Alto, CA 94304 (United States); Webb, David F. [Institute for Scientific Research, Boston College, Chestnut Hill, MA 02467 (United States); Bailey, Scott [Electrical and Computer Engineering Department, Virginia Tech, Blacksburg, VA 24061 (United States); Tobiska, W. Kent, E-mail: tom.woods@lasp.colorado.edu [Space Environment Technologies, Pacific Palisades, CA 90272 (United States)

2011-10-01T23:59:59.000Z

444

Detection of Coherent Structures in Extreme-Scale Simulations  

Science Conference Proceedings (OSTI)

The analysis of coherent structures is a common problem in many scientific domains ranging from astrophysics to combustion, fusion, and materials science. The data from three-dimensional simulations are analyzed to detect the structures, extract statistics on them, and track them over time to gain insights into the phenomenon being modeled. This analysis is typically done off-line, using data that have been written out by the simulations. However, the move towards extreme scale architectures, with multi-core processors and graphical processing units, will affect how such analysis is done as it is unlikely that the systems will support the I/O bandwidth required for off-line analysis. Moving the analysis in-situ is a solution only if we know a priori what analysis will be done, as well as the algorithms used and their parameter settings. Even then, we need to ensure that this will not substantially increase the memory requirements or the data movement as the former will be limited and the latter will be expensive. In the Exa-DM project, a collaboration between Lawrence Livermore National Laboratory and University of Minnesota, we are exploring ways in which we can address the conflicting demands of coherent structure analysis of simulation data and the architecture of modern parallel systems, while enabling scientific discovery at the exascale. In this paper, we describe our work in two areas: the in situ implementation of an existing algorithm for coherent structure analysis and the use of graph-based techniques to efficiently compress the data.

Kamath, C; Iverson, J; Kirk, R; Karypis, G

2012-03-24T23:59:59.000Z

445

Electrode configuration for extreme-UV electrical discharge source  

DOE Patents (OSTI)

It has been demonstrated that debris generation within an electric capillary discharge source, for generating extreme ultraviolet and soft x-ray, is dependent on the magnitude and profile of the electric field that is established along the surfaces of the electrodes. An electrode shape that results in uniform electric field strength along its surface has been developed to minimize sputtering and debris generation. The electric discharge plasma source includes: (a) a body that defines a circular capillary bore that has a proximal end and a distal end; (b) a back electrode positioned around and adjacent to the distal end of the capillary bore wherein the back electrode has a channel that is in communication with the distal end and that is defined by a non-uniform inner surface which exhibits a first region which is convex, a second region which is concave, and a third region which is convex wherein the regions are viewed outwardly from the inner surface of the channel that is adjacent the distal end of the capillary bore so that the first region is closest to the distal end; (c) a front electrode positioned around and adjacent to the proximal end of the capillary bore wherein the front electrode has an opening that is communication with the proximal end and that is defined by a non-uniform inner surface which exhibits a first region which is convex, a second region which is substantially linear, and third region which is convex wherein the regions are viewed outwardly from the inner surface of the opening that is adjacent the proximal end of the capillary bore so that the first region is closest to the proximal end; and (d) a source of electric potential that is connected across the front and back electrodes.

Spence, Paul Andrew (Pleasanton, CA); Fornaciari, Neal Robert (Tracey, CA); Chang, Jim Jihchyun (San Ramon, CA)

2002-01-01T23:59:59.000Z

446

Daily Temperature Lag  

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

Daily Temperature Lag Daily Temperature Lag Name: Shyammayi Status: teacher Grade: K-2 Country: Mauritius Date: Summer 2011 Question: At what time of the day is the temperature hottest? At what time of the day is the temperature coldest? Replies: In general, the hottest part of the day is late afternoon. The sun has passed its peak in the sky but still heats the Earth up until very late in the afternoon. The lowest temperatures are around dawn. Earth has had all night to get rid of the day's heat by radiating it into space. After sunrise, temperatures begin to climb. This can be changed by local storms, sea breezes or mountain breezes and even monsoon winds. Hope this helps. R. W. "Bob" Avakian Instructor Arts and Sciences/CRC Oklahoma State Univ. Inst. of Technology Shyammayi

447

Automatic temperature adjustment apparatus  

DOE Patents (OSTI)

An apparatus for increasing the efficiency of a conventional central space heating system is disclosed. The temperature of a fluid heating medium is adjusted based on a measurement of the external temperature, and a system parameter. The system parameter is periodically modified based on a closed loop process that monitors the operation of the heating system. This closed loop process provides a heating medium temperature value that is very near the optimum for energy efficiency.

Chaplin, James E. (66 Overlook Rd., Bloomingdale, NJ 07403)

1985-01-01T23:59:59.000Z

448

High-temperature sensor  

DOE Patents (OSTI)

A high temperature sensor is described which includes a pair of electrical conductors separated by a mass of electrical insulating material. The insulating material has a measurable resistivity within the sensor that changes in relation to the temperature of the insulating material within a high temperature range (1000 to 2000/sup 0/K). When required, the sensor can be encased within a ceramic protective coating.

Not Available

1981-01-29T23:59:59.000Z

449

High temperature refrigerator  

SciTech Connect

A high temperature magnetic refrigerator which uses a Stirling-like cycle in which rotating magnetic working material is heated in zero field and adiabatically magnetized, cooled in high field, then adiabatically demagnetized. During this cycle said working material is in heat exchange with a pumped fluid which absorbs heat from a low temperature heat source and deposits heat in a high temperature reservoir. The magnetic refrigeration cycle operates at an efficiency 70% of Carnot.

Steyert, Jr., William A. (Los Alamos, NM)

1978-01-01T23:59:59.000Z

450

Surface Temperature of IGUs  

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

117 117 Surface Temperatures of Insulated Glazing Units: Infrared Thermography Laboratory Measurements Brent T. Griffith, Daniel Türler, and Dariush Arasteh Building Technologies Program Environmental Energy Technologies Division Lawrence Berkeley National Laboratory University of California Berkeley, CA 94720 USA Fax: 510-486-6046, email: D_Arasteh@lbl.gov Abstract Data are presented for the distribution of surface temperatures on the warm-side surface of seven different insulated glazing units. Surface temperatures are measured using infrared thermography and an external referencing technique. This technique allows detailed mapping of surface temperatures that is non-intrusive. The glazings were placed between warm and cold environmental chambers that were operated at conditions

451

External vs. body temperature  

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

External vs. body temperature External vs. body temperature Name: jacqui Location: N/A Country: N/A Date: N/A Question: If one's internal body temperature is approximately 98.6, WHY when the external temperature is 98.6 do we feel hot? Since both temperatures are "balanced", shouldn't we feel comfortable? I am assuming here that humidity levels are controlled, and play no factor in the external temperature. Replies: First of all, skin temperature is lower than 98.6F; 98.6F is internal body temperature, so air at 98.6F is hotter than skin. But more important, it is the nervous system, and the cells in your skin that your brain uses to detect temperature that determine whether you "feel" hot or not, not whether the air is hotter than your skin. These are set so that you feel hot when the air is actually colder than your skin. Why? They are probably set to make you feel hot whenever the air is warm enough so that your body has some trouble getting rid of the excess heat it produces through metabolism. This insures that you take some actions to help your body cool off. Like drinking cool water, or reducing exercise

452

Low temperature cryoprobe  

DOE Patents (OSTI)

A portable, hand held probe usable within a small confine to produce a point source of nitrogen or helium at a relatively constant temperature of 77 degrees Kelvin.

Sungaila, Zenon F. (Orland Park, IL)

1989-01-01T23:59:59.000Z

453

High Temperature Corrosion  

Science Conference Proceedings (OSTI)

Oct 18, 2010 ... Protective Coatings for Corrosion Resistance at High Temperatures: Vilupanur Ravi1; Thuan Nguyen1; Alexander Ly1; Kameron Harmon1;...

454

Extreme learning machine based wind speed estimation and sensorless control for wind turbine power generation system  

Science Conference Proceedings (OSTI)

This paper proposes a precise real-time wind speed estimation method and sensorless control for variable-speed variable-pitch wind turbine power generation system (WTPGS). The wind speed estimation is realized by a nonlinear input-output mapping extreme ... Keywords: Extreme learning machine, Sensorless control, Wind speed estimation, Wind turbine power generation system

Si Wu; Youyi Wang; Shijie Cheng

2013-02-01T23:59:59.000Z

455

Unstructured mesh partition improvement for implicit finite element at extreme scale  

Science Conference Proceedings (OSTI)

Parallel simulations at extreme scale require that the mesh is distributed across a large number of processors with equal work load and minimum inter-part communications. A number of algorithms have been developed to meet these goals and graph/hypergraph-based ... Keywords: Extreme scale, Finite element, Partition improvement, Unstructured mesh

Min Zhou; Onkar Sahni; Ting Xie; Mark S. Shephard; Kenneth E. Jansen

2012-03-01T23:59:59.000Z

456

Memory-conscious collective I/O for extreme scale HPC systems  

Science Conference Proceedings (OSTI)

Upcoming extreme scale platforms are expected to have millions of nodes with hundreds to thousands of small cores for each node. The continuing decrease in memory capacity per core and the increasing disparity between core count and off-chip memory bandwidth ... Keywords: collective I/O, extreme scale system, high performance computing, many-core architecture, parallel I/O

Yin Lu, Yong Chen, Yu Zhuang, Rajeev Thakur

2013-06-01T23:59:59.000Z

457

Extremes of the Indian summer monsoon rainfall, ENSO and equatorial Indian Ocean oscillation  

E-Print Network (OSTI)

Extremes of the Indian summer monsoon rainfall, ENSO and equatorial Indian Ocean oscillation Monsoon Rainfall (ISMR) are linked to El Nin~o and Southern Oscillation (ENSO). We show that large), Extremes of the Indian summer monsoon rainfall, ENSO and equatorial Indian Ocean oscillation, Geophys. Res

Gadgil, Siddhartha

458

Extreme Daily Rainfall Events and Their Impact on Ensemble Forecasts of the Indian Monsoon  

Science Conference Proceedings (OSTI)

The Indian summer monsoon rainfall is the net result of an ensemble of synoptic disturbances, many of which are extremely intense. Sporadic systems often bring extreme amounts of rain over only a few days, which can have sizable impacts on the ...

D. B. Stephenson; K. Rupa Kumar; F. J. Doblas-Reyes; J-F. Royer; F. Chauvin; S. Pezzulli

1999-09-01T23:59:59.000Z

459

Changes in the Extremes of the Climate Simulated by CCC GCM2 under CO2 Doubling  

Science Conference Proceedings (OSTI)

Changes due to CO2 doubling in the extremes of the surface climate as simulated by the second-generation circulation model of the Canadian Centre for Climate Modelling and Analysis are studied in two 20-yr equilibrium simulations. Extreme values ...

Francis W. Zwiers; Viatcheslav V. Kharin

1998-09-01T23:59:59.000Z

460

Organization and Environmental Properties of Extreme-Rain-Producing Mesoscale Convective Systems  

Science Conference Proceedings (OSTI)

This study examines the radar-indicated structures and other features of extreme rain events in the United States over a 3-yr period. A rainfall event is defined as extreme when the 24-h precipitation total at one or more stations surpasses the ...

Russ S. Schumacher; Richard H. Johnson

2005-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "temperature extremes grid-connected" 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

Discovery of extreme events-related communities in contrasting groups of physical system networks  

Science Conference Proceedings (OSTI)

The latent behavior of a physical system that can exhibit extreme events such as hurricanes or rainfalls, is complex. Recently, a very promising means for studying complex systems has emerged through the concept of complex networks. Networks representing ... Keywords: Community detection, Comparative analysis, Complex network analysis, Extreme event prediction, Network motif detection, Spatio-temporal data mining

Zhengzhang Chen; William Hendrix; Hang Guan; Isaac K. Tetteh; Alok Choudhary; Fredrick Semazzi; Nagiza F. Samatova

2013-09-01T23:59:59.000Z

462

Long-Term Trends in Extreme Precipitation Events over the Conterminous United States and Canada  

Science Conference Proceedings (OSTI)

This paper describes the results of an analysis of trends in short duration (17 days) extreme precipitation events that have a recurrence interval of 1 yr or longer for stations in the United States and Canada. This definition of extreme ...

Kenneth E. Kunkel; Karen Andsager; David R. Easterling

1999-08-01T23:59:59.000Z

463

How Do You Stay Warm While Saving Money and Energy in Extreme Weather? |  

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

How Do You Stay Warm While Saving Money and Energy in Extreme How Do You Stay Warm While Saving Money and Energy in Extreme Weather? How Do You Stay Warm While Saving Money and Energy in Extreme Weather? February 3, 2011 - 6:30am Addthis Many states are getting extreme weather this week, with deep freezes, huge blizzards, and ice storms causing various problems across the country. Such weather can cause us to use energy a bit differently to stay warm and keep things running. Depending on where you are, you may be keeping the faucet dripping (so pipes don't freeze), your furnace might be working overtime in the cold, or you may be spending extra time warming up your car. In extreme conditions, it's important to be safe and take your own home and needs into account when taking these extra measures, while still considering your energy use and costs. For example, are your pipes in a

464

How Do You Stay Warm While Saving Money and Energy in Extreme Weather? |  

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

Warm While Saving Money and Energy in Extreme Warm While Saving Money and Energy in Extreme Weather? How Do You Stay Warm While Saving Money and Energy in Extreme Weather? February 3, 2011 - 6:30am Addthis Many states are getting extreme weather this week, with deep freezes, huge blizzards, and ice storms causing various problems across the country. Such weather can cause us to use energy a bit differently to stay warm and keep things running. Depending on where you are, you may be keeping the faucet dripping (so pipes don't freeze), your furnace might be working overtime in the cold, or you may be spending extra time warming up your car. In extreme conditions, it's important to be safe and take your own home and needs into account when taking these extra measures, while still considering your energy use and costs. For example, are your pipes in a

465

PROMINENCE PLASMA DIAGNOSTICS THROUGH EXTREME-ULTRAVIOLET ABSORPTION  

SciTech Connect

In this paper, we introduce a new diagnostic technique that uses EUV and UV absorption to determine the electron temperature and column emission measure, as well as the He/H relative abundance of the absorbing plasma. If a realistic assumption on the geometry of the latter can be made and a spectral code such as CHIANTI is used, then this technique can also yield the absorbing plasma hydrogen and electron density. This technique capitalizes on the absorption properties of hydrogen and helium at different wavelength ranges and temperature regimes. Several cases where this technique can be successfully applied are described. This technique works best when the absorbing plasma is hotter than 15,000 K. We demonstrate this technique on AIA observations of plasma absorption during a coronal mass ejection eruption. This technique can be easily applied to existing observations of prominences and cold plasmas in the Sun from almost all space missions devoted to the study of the solar atmosphere, which we list.

Landi, E. [Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109 (United States); Reale, F. [Dipartimento di Fisica e Chimica, Universita di Palermo, Piazza del Parlamento 1, I-90134 Palermo (Italy)

2013-07-20T23:59:59.000Z

466

Electrolysis High Temperature Hydrogen  

INL has developed a high-temperature process the utilizes solid oxide fuel cells that are operated in the electrolytic mode. The first process includes combining a high-temperature heat source (e.g. nuclear reactor) with a hydrogen production facility ...

467

Temperature stratified turbine compressors  

SciTech Connect

A method and apparatus for improving the efficiency of a compressor of a gas turbine engine is disclosed. The inlet gas entering the compressor is stratified into two portions of different temperatures. The higher temperature gas is introduced adjacent the outer tipe of the compressor blades to reduce the relative Mach number of the flow at the area.

Earnest, E.R.; Passinos, B.

1979-01-09T23:59:59.000Z

468

Matter in Extreme Conditions Instrument - Conceptual Design Report  

Science Conference Proceedings (OSTI)

The SLAC National Accelerator Laboratory (SLAC), in collaboration with Argonne National Laboratory (ANL), Lawrence Livermore National Laboratory (LLNL), and the University of California at Los Angeles (UCLA), is constructing a Free-Electron Laser (FEL) research facility. The FEL has already met its performance goals in the wavelength range 1.5 nm - 0.15 nm. This facility, the Linac Coherent Light Source (LCLS), utilizes the SLAC 2-Mile Linear Accelerator (linac) and will produce sub-picosecond pulses of short wavelength X-rays with very high peak brightness and almost complete transverse coherence. The final one-third of the SLAC linac is used as the source of electrons for the LCLS. The high energy electrons are transported across the SLAC Research Yard, into a tunnel which houses a long undulator. In passing through the undulator, the electrons are bunched by the force of their own synchrotron radiation and produce an intense, monochromatic, spatially coherent beam of X-rays. By varying the electron energy, the FEL X-ray wavelength is tunable from 1.5 nm to 0.15 nm. The LCLS includes two experimental halls as well as X-ray optics and infrastructure necessary to create a facility that can be developed for research in a variety of disciplines such as atomic physics, materials science, plasma physics and biosciences. This Conceptual Design Report, the authors believe, confirms the feasibility of designing and constructing an X-ray instrument in order to exploit the unique scientific capability of LCLS by creating extreme conditions and study the behavior of plasma under those controlled conditions. This instrument will address the Office of Science, Fusion Energy Sciences, mission objective related to study of Plasma and Warm Dense Matter as described in the report titled LCLS, the First Experiments, prepared by the LCLS Scientific Advisory Committee (SAC) in September 2000. The technical objective of the LCLS Matter in Extreme Conditions (MEC) Instrument project is to design, build, and install at the LCLS an X-ray instrument that will complement the initial instrument suite included in the LCLS construction and the LUSI Major Item of Equipment (MIE) Instruments. As the science programs advance and new technological challenges appear, instrumentation must be developed and ready to conquer these new opportunities. The MEC concept has been developed in close consultation with the scientific community through a series of workshops team meetings and focused reviews. In particular, the MEC instrument has been identified as meeting one of the most urgent needs of the scientific community based on the advice of the LCLS Scientific Advisory Committee (SAC) in response to an open call for letters of intent (LOI) from the breadth of the scientific community. The primary purpose of the MEC instrument is to create High Energy Density (HED) matter and measure its physical properties. There are three primary elements of the MEC instrument: (A) Optical laser drivers that will create HED states by irradiation in several ways and provide diagnostics capability; (B) The LCLS x-ray free electron laser, which will provide the unique capability to create, probe and selectively pump HED states; and, (C) A suite of diagnostic devices required to observe the evolution of the HED state. These elements when combined in the MEC instrument meet the 'Mission Need' as defined in CD-0. For the purposes of the description we separate the types of experiments to be performed into three categories: (1) High pressure: Here we are interested in the generation of high pressure using the optical lasers to irradiate a surface that ablates and drives a pressure wave into a sample, similar to a piston. The pressures that can be reached exceed 1 Mbar and the properties of interest are for example, the reflectivity, conductivity, opacity as well as the changes driven by the pressure wave on, e.g., condensed matter structure. These phenomena will be studied by means of diffraction measurements, measurements of the pressure wave characteristics, in situ probing by

Boyce, R.F.; Boyce, R.M.; Haller, G.; Hastings, J.B.; Hays, G.; Lee, H.J.; /SLAC; Lee, R.W.; /LLNL, Livermore; Nagler, B.; /Rutherford; Scharfenstein, M.; Marsh, D.; White, W.E.; /SLAC

2009-12-09T23:59:59.000Z

469

High Temperature ESP Monitoring  

SciTech Connect

The objective of the High Temperature ESP Monitoring project was to develop a downhole monitoring system to be used in wells with bottom hole well temperatures up to 300C for measuring motor temperature, formation pressure, and formation temperature. These measurements are used to monitor the health of the ESP motor, to track the downhole operating conditions, and to optimize the pump operation. A 220 C based High Temperature ESP Monitoring system was commercially released for sale with Schlumberger ESP motors April of 2011 and a 250 C system with will be commercially released at the end of Q2 2011. The measurement system is now fully qualified, except for the sensor, at 300 C.

Jack Booker; Brindesh Dhruva

2011-06-20T23:59:59.000Z

470

New Phases of Hydrogen-Bonded Systems at Extreme Conditions  

DOE Green Energy (OSTI)

We study the behavior of hydrogen-bonded systems under high-pressure and temperature. First principle calculations of formic acid under isotropic pressure up to 70 GPa reveal the existence of a polymerization phase at around 20 GPa, in support of recent IR, Raman, and XRD experiments. In this phase, covalent bonding develops between molecules of the same chain through symmetrization of hydrogen bonds. We also performed molecular dynamics simulations of water at pressures up to 115 GPa and 2000 K. Along this isotherm, we are able to define three different phases. We observe a molecular fluid phase with superionic diffusion of the hydrogens for pressure 34 GPa to 58 GPa. We report a transformation to a phase dominated by transient networks of symmetric O-H hydrogen bonds at 95-115 GPa. As in formic acid, the network can be attributed to the symmetrization of the hydrogen bond, similar to the ice VII to ice X transition.

Manaa, M R; Goldman, N; Fried, L E

2006-10-23T23:59:59.000Z

471

Extreme solid state refrigeration using nanostructured Bi-Te alloys.  

SciTech Connect

Materials are desperately needed for cryogenic solid state refrigeration. We have investigated nanostructured Bi-Te alloys for their potential use in Ettingshausen refrigeration to liquid nitrogen temperatures. These alloys form alternating layers of Bi{sub 2} and Bi{sub 2}Te{sub 3} blocks in equilibrium. The composition Bi{sub 4}Te{sub 3} was identified as having the greatest potential for having a high Ettingshausen figure of merit. Both single crystal and polycrystalline forms of this material were synthesized. After evaluating the Ettingshausen figure of merit for a large, high quality polycrystal, we simulated the limits of practical refrigeration in this material from 200 to 77 K using a simple device model. The band structure was also computed and compared to experiments. We discuss the crystal growth, transport physics, and practical refrigeration potential of Bi-Te alloys.

Lima Sharma, Ana L. (San Jose State University, San Jose, CA); Spataru, Dan Catalin; Medlin, Douglas L.; Sharma, Peter Anand; Morales, Alfredo Martin

2009-09-01T23:59:59.000Z

472

Fever and Body Temperature  

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

Fever and Body Temperature Fever and Body Temperature Name: Ying Location: N/A Country: N/A Date: N/A Question: Hi, I have a few questions that I want to ask you: Why does your body chose to raise its temperature when you have a fever? Replies: Most bacteria and viruses that live in your body grow best at body temperature. They don't grow very well when the temperature is raised. When there are bacteria in your body they give off chemicals that signal white blood cells to come to try to eat them and also affect an area in your brain called the hypothalamus. This part of the brain controls alot of the automatic functions in your body and is also the site of your body's "thermostat". When the chemicals from the bacteria circulate through the hypothalamus it sets the body's temperature higher. This is called a fever. Your body kind of tries to "sweat out" the bacteria and kill them with a higher temperature. Some scientists question whether trying to bring down a fever is the best thing to do. If it isn't too high, some believe we should just let it work

473

Maintaining body temperature  

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

Maintaining body temperature Maintaining body temperature Name: Jeff Location: N/A Country: N/A Date: N/A Question: What keeps the human body at a constant temperature of 98.6? Replies: Maintaining body temperature is very complex. It also takes a lot of energy. About 80% of the energy from the food you eat goes to maintaining body temperature. Basically, the chemical reactions of metabolism of stored food, especially fats, generate heat as a by product. This heat warms the body. The brain reads temperature and controls to some extent the rate of this metabolism. There are also many other mechanisms triggered by the brain to keep the core of your body warm, even if the periphery (skin) is cold. Blood vessels to the fingers and toes constrict, so that the cold air doesn't cool the blood too much, so that cooled blood doesn't cool down the heart and brain when it returns. In severe cases, your body will sacrifice a finger or a toe to keep you from dying of cold core temperature (frostbite: it saves your life!). Also the brain can order a lot of muscles to contract rapidly. This generates a lot of heat quickly, a response called shivering. There's much more to this exciting field of research.

474

REALIZING PRESSURE, TEMPERATURE, AND LENGTH ...  

Science Conference Proceedings (OSTI)

... The basic concept behind the proposed apparatus is illustrated in ... at room temperature, requiring realization of thermodynamic temperature near 23 ...

2013-07-10T23:59:59.000Z

475

High Temperature, high pressure equation of state density correlations and viscosity correlations  

Science Conference Proceedings (OSTI)

Global increase in oil demand and depleting reserves has derived a need to find new oil resources. To find these untapped reservoirs, oil companies are exploring various remote and harsh locations such as deep waters in Gulf of Mexico, remote arctic regions, unexplored deep deserts, etc. Further, the depth of new oil/gas wells being drilled has increased considerably to tap these new resources. With the increase in the well depth, the bottomhole temperature and pressure are also increasing to extreme values (i.e. up to 500 F and 35,000 psi). The density and viscosity of natural gas and crude oil at reservoir conditions are critical fundamental properties required for accurate assessment of the amount of recoverable petroleum within a reservoir and the modeling of the flow of these fluids within the porous media. These properties are also used to design appropriate drilling and production equipment such as blow out preventers, risers, etc. With the present state of art, there is no accurate database for these fluid properties at extreme conditions. As we have begun to expand this experimental database it has become apparent that there are neither equations of state for density or transport models for viscosity that can be used to predict these fundamental properties of multi-component hydrocarbon mixtures over a wide range of temperature and pressure. Presently, oil companies are using correlations based on lower temperature and pressure databases that exhibit an unsatisfactory predictive capability at extreme conditions (e.g. as great as {+-} 50%). From the perspective of these oil companies that are committed to safely producing these resources, accurately predicting flow rates, and assuring the integrity of the flow, the absence of an extensive experimental database at extreme conditions and models capable of predicting these properties over an extremely wide range of temperature and pressure (including extreme conditions) makes their task even more daunting.

Tapriyal, D.; Enick, R.; McHugh, M.; Gamwo, I.; Morreale, B.

2012-07-31T23:59:59.000Z

476

Intensity, duration, and frequency of precipitation extremes under 21st-century warming scenarios  

Science Conference Proceedings (OSTI)

Recent research on the projection of precipitation extremes has either focused on conceptual physical mechanisms that generate heavy precipitation or rigorous statistical methods that extrapolate tail behavior. However, informing both climate prediction and impact assessment requires concurrent physically and statistically oriented analysis. A combined examination of climate model simulations and observation-based reanalysis data sets suggests more intense and frequent precipitation extremes under 21st-century warming scenarios. Utilization of statistical extreme value theory and resampling-based uncertainty quantification combined with consideration of the Clausius-Clapeyron relationship reveals consistently intensifying trends for precipitation extremes at a global-average scale. However, regional and decadal analyses reveal specific discrepancies in the physical mechanisms governing precipitation extremes, as well as their statistical trends, especially in the tropics. The intensifying trend of precipitation extremes has quantifiable impacts on intensity-duration-frequency curves, which in turn have direct implications for hydraulic engineering design and water-resources management. The larger uncertainties at regional and decadal scales suggest the need for caution during regional-scale adaptation or preparedness decisions. Future research needs to explore the possibility of uncertainty reduction through higher resolution global climate models, statistical or dynamical downscaling, as well as improved understanding of precipitation extremes processes.

Kao, Shih-Chieh [ORNL; Ganguly, Auroop R [ORNL

2011-01-01T23:59:59.000Z

477

High Temperature Capacitor Development  

Science Conference Proceedings (OSTI)

The absence of high-temperature electronics is an obstacle to the development of untapped energy resources (deep oil, gas and geothermal). US natural gas consumption is projected to grow from 22 trillion cubic feet per year (tcf) in 1999 to 34 tcf in 2020. Cumulatively this is 607 tcf of consumption by 2020, while recoverable reserves using current technology are 177 tcf. A significant portion of this shortfall may be met by tapping deep gas reservoirs. Tapping these reservoirs represents a significant technical challenge. At these depths, temperatures and pressures are very high and may require penetrating very hard rock. Logistics of supporting 6.1 km (20,000 ft) drill strings and the drilling processes are complex and expensive. At these depths up to 50% of the total drilling cost may be in the last 10% of the well depth. Thus, as wells go deeper it is increasingly important that drillers are able to monitor conditions down-hole such as temperature, pressure, heading, etc. Commercial off-the-shelf electronics are not specified to meet these operating conditions. This is due to problems associated with all aspects of the electronics including the resistors and capacitors. With respect to capacitors, increasing temperature often significantly changes capacitance because of the strong temperature dependence of the dielectric constant. Higher temperatures also affect the equivalent series resistance (ESR). High-temperature capacitors usually have low capacitance values because of these dielectric effects and because packages are kept small to prevent mechanical breakage caused by thermal stresses. Electrolytic capacitors do not operate at temperatures above 150oC due to dielectric breakdown. The development of high-temperature capacitors to be used in a high-pressure high-temperature (HPHT) drilling environment was investigated. These capacitors were based on a previously developed high-voltage hybridized capacitor developed at Giner, Inc. in conjunction with a unique high-temperature electrolyte developed during the course of the program. During this program the feasibility of operating a high voltage hybridized capacitor at 230oC was demonstrated. Capacitor specifications were established in conjunction with potential capacitor users. A method to allow for capacitor operation at both ambient and elevated temperatures was demonstrated. The program was terminated prior to moving into Phase II due to a lack of cost-sharing funds.

John Kosek

2009-06-30T23:59:59.000Z

478

ARM - Measurement - Atmospheric temperature  

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

temperature temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric temperature The temperature indicated by a thermometer exposed to the air in a place sheltered from direct solar radiation. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AERI : Atmospheric Emitted Radiance Interferometer SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

479

ARM - Measurement - Virtual temperature  

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

govMeasurementsVirtual temperature govMeasurementsVirtual temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Virtual temperature The virtual temperature Tv = T(1 + rv/{epsilon}), where rv is the mixing ratio, and {epsilon} is the ratio of the gas constants of air and water vapor ( 0.622). Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems MWRP : Microwave Radiometer Profiler RWP : Radar Wind Profiler

480

Low temperature cryoprobe  

DOE Patents (OSTI)

A portable, hand held probe usable within a small confine to produce a point source of nitrogen or helium at a relatively constant temperatures of 77 degrees Kelvin, is discussed. 3 figs.

Sungaila, Z.F.

1988-04-12T23:59:59.000Z

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481

Temperature | Open Energy Information  

Open Energy Info (EERE)

Showing 7 properties using this type. A Property:AvgGeoFluidTemp C Property:Combustion Intake Air Temperature F Property:FirstWellTemp G Property:GeofluidTemp M...

482

Complete Urban Surface Temperatures  

Science Conference Proceedings (OSTI)

An observation program using ground and airborne thermal infrared radiometers is used to estimate the surface temperature of urban areas, taking into account the total active surface area. The authors call this the complete urban surface ...

J. A. Voogt; T. R. Oke

1997-09-01T23:59:59.000Z

483

Temperature-aware microarchitecture  

Science Conference Proceedings (OSTI)

With power density and hence cooling costs rising exponentially, processor packaging can no longer be designed for the worst case, and there is an urgent need for runtime processor-level techniques that can regulate operating temperature when the package's ...

Kevin Skadron; Mircea R. Stan; Wei Huang; Sivakumar Velusamy; Karthik Sankaranarayanan; David Tarjan

2003-06-01T23:59:59.000Z

484

Transformation of the hadronic and subhadronic substances under extreme conditions  

E-Print Network (OSTI)

Very dense and/or hot hadronic substance (e.g. the one with energy density greatly exceeding that of a normal nucleus) transforms itself into a subhadronic substance which obeys macroscopic classical physics, in particular suffers phase transitions. The most popular Single Phase Transition Model (SPTM) assumes that the new phase is the Quark Gluon Plasma (QGP) consisting of deconfined, chiral symmetric, pointlike "current" quarks q and gluons g of Quantum Chromodynamics (QCD). This paper is devoted to another, Double Phase Transition Model (DPTM) according to which hadronic substance (H) and QGP transform one into another via an intermediate phase consisting of deconfined constituent massive quarks Q which for brevity sake we call also equivalently valons (Q, valonic phase) with broken chiral symmetry (plus pions as Goldstone particles). I. e. we consider the phase transformation chain H-Q-QGP instead of usually assumed H-QGP. The phase transition H-Q is the Hagedorn one and corresponds to the Hagedorn temperature. Connection with the relativistic heavy ion collision is discussed. H-Q transformation may take place even at low (e.g. Dubna) energies.

E. L. Feinberg

1997-01-16T23:59:59.000Z

485

Secretary Chu to Appear This Sunday on ABC's Extreme Makeover: Home Edition  

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

Chu to Appear This Sunday on ABC's Extreme Makeover: Home Chu to Appear This Sunday on ABC's Extreme Makeover: Home Edition Secretary Chu to Appear This Sunday on ABC's Extreme Makeover: Home Edition February 12, 2010 - 12:00am Addthis Washington - This Sunday, February 14th, Energy Secretary Steven Chu will appear on the show Extreme Makeover: Home Edition. The Department of Energy and Oak Ridge National Laboratory worked with the builders to offer technical assistance as they designed and built a super high efficiency home and a neighborhood learning center in the Washington, D.C area. The builders used the latest "green" technologies, including an insulated concrete form foundation, triple-layer insulated windows, hybrid electric water heaters and a geothermal heat pump, compact fluorescent lighting, and

486

'Science on Saturday' lecture examines the extreme X-ray universe  

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

Printer-friendly NASA's NuSTAR spacecraft. "The Extreme X-ray Universe: Discovery Science with NASA's NuSTAR Mission," by Lab scientists Michael Pivovaroff and Bill Craig, and...

487

Extreme Events and the General Circulation: Observations and Stochastic Model Dynamics  

Science Conference Proceedings (OSTI)

This study explores the dynamical role of non-Gaussian potential vorticity variability (extreme events) in the zonally averaged circulation of the atmosphere within a stochastic framework. First the zonally averaged skewness and kurtosis patterns ...

Philip Sura; Maxime Perron

2010-09-01T23:59:59.000Z

488

Monitoring and Understanding Changes in Extremes: Extratropical Storms, Winds, and Waves  

Science Conference Proceedings (OSTI)

This scientific assessment examines changes in three climate extremes (extratropical storms, winds, and waves), with an emphasis on U.S. coastal regions during the cold season. There is moderate evidence of an increase in both extratropical storm ...

Russell S. Vose; Scott Applequist; Mark A. Bourassa; Sara C. Pryor; Rebecca J. Barthelmie; Brian Blanton; Peter D. Bromirski; Harold E. Brooks; Arthur T. DeGaetano; Randall M. Dole; David R. Easterling; Robert E. Jensen; Thomas R. Karl; Richard W. Katz; Katherine Klink; Michael C. Kruk; Kenneth E. Kunkel; Michael C. MacCracken; Thomas C. Peterson; Karsten Shein; Bridget R. Thomas; John E. Walsh; Xiaolan L. Wang; Michael F. Wehner; Donald J. Wuebbles; Robert S. Young

489

Mesoscale Processes Contributing to Extreme Rainfall in a Midlatitude Warm-Season Flash Flood  

Science Conference Proceedings (OSTI)

Observations and numerical simulations are used to investigate the atmospheric processes that led to extreme rainfall and resultant destructive flash flooding in eastern Missouri on 67 May 2000. In this event, a quasi-stationary mesoscale ...

Russ S. Schumacher; Richard H. Johnson

2008-10-01T23:59:59.000Z

490

Changes of Extreme Wave Heights in Northern Hemisphere Oceans and Related Atmospheric Circulation Regimes  

Science Conference Proceedings (OSTI)

This study assesses trends in seasonal extremes (90- and 99-percentiles) of Significant Wave Height (SWH) in the North Atlantic and the North Pacific, as simulated in a 40-yr global wave hindcast using the National Centers for Environmental ...

Xiaolan L. Wang; Val R. Swail

2001-05-01T23:59:59.000Z

491

How Well Do Large-Scale Models Reproduce Regional Hydrological Extremes in Europe?  

Science Conference Proceedings (OSTI)

This paper presents a new methodology for assessing the ability of gridded hydrological models to reproduce large-scale hydrological high and low flow events (as a proxy for hydrological extremes) as described by catalogues of historical droughts [...

Christel Prudhomme; Simon Parry; Jamie Hannaford; Douglas B. Clark; Stefan Hagemann; Frank Voss

2011-12-01T23:59:59.000Z

492

The Hydrometeorological Environment of Extreme Rainstorms in the Southern Plains of the United States  

Science Conference Proceedings (OSTI)

Convective storms are commonplace in the southern plains of the United States. Occasionally, convective storms produce extreme rainfall accumulations, causing streams and rivers to flood. In this paper, we examine the hydrometeorological ...

A. Allen Bradley; James A. Smith

1994-12-01T23:59:59.000Z

493

The Southern Oscillation in the Australian Region. Part I: Anomalies at the Extremes of the Oscillation  

Science Conference Proceedings (OSTI)

The response of the tropospheric circulation over Australia and the southwest Pacific to extremes of the Southern Oscillation is documented using correlation, regression, and compositing techniques applied to seasonal means of rawinsonde station ...

Wasyl Drosdowsky; Mark Williams

1991-06-01T23:59:59.000Z

494

Projected Changes in Mean and Extreme Precipitation in Africa under Global Warming. Part II: East Africa  

Science Conference Proceedings (OSTI)

Probable changes in mean and extreme precipitation in East Africa are estimated from general circulation models (GCMs) prepared for the Intergovernmental Panel on Climate Change Fourth Assessment Report (AR4). Bayesian statistics are used to ...

Mxolisi E. Shongwe; Geert Jan van Oldenborgh; Bart van den Hurk; Maarten van Aalst

2011-07-01T23:59:59.000Z

495

Effects of Recent Weather Extremes on the Insurance Industry: Major Implications for the Atmospheric Sciences  

Science Conference Proceedings (OSTI)

Frequent and extremely damaging severe weather conditions in the United States during 199194 caused $40 billion in insured losses, creating major impacts and eliciting diverse responses in the weather insurance industry. Population, one reason ...

Stanley A. Changnon; David Changnon; E. Ray Fosse; Donald C. Hoganson; Richard J. Roth Sr.; James M. Totsch

1997-03-01T23:59:59.000Z

496

Long-Term Temporal Variation of Extreme Rainfall Events in Australia: 19102006  

Science Conference Proceedings (OSTI)

The temporal variability of the frequency of short-duration extreme precipitation events in Australia for the period 19102006 is examined using the high-quality rainfall dataset identified by the Bureau of Meteorology, Australia, for 189 ...

Guobin Fu; Neil R. Viney; Stephen P. Charles; Jianrong Liu

2010-08-01T23:59:59.000Z

497

Extreme rainfall intensities and long-term rainfall risk from tropical cyclones  

E-Print Network (OSTI)

We develop a methodology for the frequency of extreme rainfall intensities caused by tropical cyclones (TCs) in coastal areas. The mean rainfall field associated with a TC with maximum tangential wind speed Vmax, radius ...

Langousis, Andreas, 1981-

2009-01-01T23:59:59.000Z

498

Combining eXtreme Programming with ISO 9000:2000 to Improve Nigerian Software Development Processes.  

E-Print Network (OSTI)

??The aim of this research work is to study how eXtreme programming could be combined with ISO 9000:2000 standards to improve Nigerian software development processes. (more)

Erharuyi, Edison

2007-01-01T23:59:59.000Z

499

Dynamical Structure of Extreme Floods in the U.S. Midwest and the United Kingdom  

Science Conference Proceedings (OSTI)

Twenty extreme spring floods that occurred in the Ohio basin between 1901 and 2008, identified from daily river discharge data, are investigated and compared to the April 2011 Ohio River flood event. Composites of synoptic fields for the flood ...

Jennifer Nakamura; Upmanu Lall; Yochanan Kushnir; Andrew W. Robertson; Richard Seager

2013-04-01T23:59:59.000Z

500

Increasing Trend of Synoptic Activity and Its Relationship with Extreme Rain Events over Central India  

Science Conference Proceedings (OSTI)

The nature of the increasing frequency of extreme rainfall events (ERE) in central India is investigated by relating their occurrence to synoptic activity. Using a long record of the paths and intensities of monsoon synoptic disturbances, a ...

R. S. Ajayamohan; William J. Merryfield; Viatcheslav V. Kharin

2010-02-01T23:59:59.000Z