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1

Modified Microgrid Concept for Rural Electrification in Africa | Open  

Open Energy Info (EERE)

Modified Microgrid Concept for Rural Electrification in Africa Modified Microgrid Concept for Rural Electrification in Africa Jump to: navigation, search Tool Summary Name: Modified Microgrid Concept for Rural Electrification in Africa Agency/Company /Organization: IEEE Sector: Energy Focus Area: Grid Assessment and Integration Topics: Co-benefits assessment, - Energy Access Resource Type: Technical report Website: ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1709540 UN Region: Eastern Africa, Middle Africa, Northern Africa, Southern Africa, Western Africa Language: English References: Modified Microgrid Concept for Rural Electrification in Africa[1] "With the population of 13.4% of the world and a land area of 15%, Africa has only 2% of the world's industrial capacity. Its per capita income is only 15% of the world average and only consumes 3% of world energy. Many

2

Advanced concepts for controlling energy surety microgrids.  

SciTech Connect

Today, researchers, engineers, and policy makers are seeking ways to meet the world's growing demand for energy while addressing critical issues such as energy security, reliability, and sustainability. Many believe that distributed generators operating within a microgrid have the potential to address most of these issues. Sandia National Laboratories has developed a concept called energy surety in which five of these 'surety elements' are simultaneously considered: energy security, reliability, sustainability, safety, and cost-effectiveness. The surety methodology leads to a new microgrid design that we call an energy surety microgrid (ESM). This paper discusses the unique control requirement needed to produce a microgrid system that has high levels of surety, describes the control system from the most fundamental level through a real-world example, and discusses our ideas and concepts for a complete system.

Menicucci, David F.; Ortiz-Moyet, Juan

2011-05-01T23:59:59.000Z

3

Integration of Distributed Energy The CERTS MicroGrid Concept  

E-Print Network (OSTI)

Integration of Distributed Energy Resources The CERTS MicroGrid Concept CALIFORNIA ENERGY are being challenged to maintain the reliability of the grid and support economic transfers of power Consortium for Electric Reliability Technology Solutions White Paper on Integration of Distributed Energy

4

Abstract Microgrids are a new concept for future energy dis-tribution systems that enable renewable energy integration and  

E-Print Network (OSTI)

distributed generators (DGs) that are usually integrated via power-electronic inverters. In order to enhance generators (DGs) has been significantly improved. Inverter-interfaced DGs can be flexibly deployed in power1 Abstract ­ Microgrids are a new concept for future energy dis- tribution systems that enable

Collins, Emmanuel

5

Microgrid Activities  

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

The Energy Department has a comprehensive portfolio of activities that focuses on the development and implementation of microgrids to further improve reliability and resiliency of the grid, help...

6

CERTS Microgrid Laboratory Test Bed  

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

CERTS Microgrid Laboratory Test Bed CERTS Microgrid Laboratory Test Bed Title CERTS Microgrid Laboratory Test Bed Publication Type Journal Article LBNL Report Number LBNL-3553E Year of Publication 2011 Authors Lasseter, Robert H., Joseph H. Eto, Ben Schenkman, John Stevens, Harry T. Volkommer, David Klapp, Ed Linton, Hector Hurtado, and Joyashree Roy Journal IEEE Transactions on Power Delivery Volume 26 Start Page 325 Issue 1 Date Published 01/2011 Keywords distributed energy resources (der) Abstract CERTS Microgrid concept captures the emerging potential of distributed generation using a system approach. CERTS views generation and associated loads as a subsystem or a "microgrid". The sources can operate in parallel to the grid or can operate in island, providing UPS services. The system can disconnect from the utility during large events (i.e. faults, voltage collapses), but may also intentionally disconnect when the quality of power from the grid falls below certain standards. CERTS Microgrid concepts were demonstrated at a full-scale test bed built near Columbus, Ohio and operated by American Electric Power. The testing fully confirmed earlier research that had been conducted initially through analytical simulations, then through laboratory emulations, and finally through factory acceptance testing of individual microgrid components. The islanding and resynchronization method met all Institute of Electrical and Electronics Engineers Standard 1547 and power quality requirements. The electrical protection system was able to distinguish between normal and faulted operation. The controls were found to be robust under all conditions, including difficult motor starts and high impedance faults. Keywords: CHP, UPS, distributed generation, intentional islanding, inverters, microgrid, CERTS, power vs. frequency droop, voltage droop.

7

Microgrid cyber security reference architecture.  

SciTech Connect

This document describes a microgrid cyber security reference architecture. First, we present a high-level concept of operations for a microgrid, including operational modes, necessary power actors, and the communication protocols typically employed. We then describe our motivation for designing a secure microgrid; in particular, we provide general network and industrial control system (ICS)-speci c vulnerabilities, a threat model, information assurance compliance concerns, and design criteria for a microgrid control system network. Our design approach addresses these concerns by segmenting the microgrid control system network into enclaves, grouping enclaves into functional domains, and describing actor communication using data exchange attributes. We describe cyber actors that can help mitigate potential vulnerabilities, in addition to performance bene ts and vulnerability mitigation that may be realized using this reference architecture. To illustrate our design approach, we present a notional a microgrid control system network implementation, including types of communica- tion occurring on that network, example data exchange attributes for actors in the network, an example of how the network can be segmented to create enclaves and functional domains, and how cyber actors can be used to enforce network segmentation and provide the neces- sary level of security. Finally, we describe areas of focus for the further development of the reference architecture.

Veitch, Cynthia K.; Henry, Jordan M.; Richardson, Bryan T.; Hart, Derek H.

2013-07-01T23:59:59.000Z

8

CERTS Microgrid Laboratory Test Bed  

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

Submitted to IEEE Transactions on Power Delivery Submitted to IEEE Transactions on Power Delivery Abstract--. CERTS Microgrid concept captures the emerging potential of distributed generation using a system approach. CERTS views generation and associated loads as a subsystem or a "microgrid". The sources can operate in parallel to the grid or can operate in island, providing UPS services. The system can disconnect from the utility during large events (i.e. faults, voltage collapses), but may also intentionally disconnect when the quality of power from the grid falls below certain standards. CERTS Microgrid concepts were demonstrated at a full-scale test bed built near Columbus, Ohio and operated by American Electric Power. The testing fully confirmed earlier research that had been conducted initially through analytical simulations,

9

Policies and demonstrations of micro-grids in China: A review  

Science Journals Connector (OSTI)

Abstract Micro-grids are effective concepts and systems to interface renewable and sustainable energy resources into utility, which has been paid significant attention. In this paper, the policies and demonstrations of micro-grids for researches and developments, as well as practical applications in China have been comprehensively reviewed. Many recent policies on renewable energy and micro-grids are summarized, which have been guiding and contributing the development of micro-grids in China. Additionally, the available micro-grids demonstrations in China are also introduced in detail. Finally, the emergency necessaries and trends of micro-grid applications in China have been concluded.

Zheng Zeng; Rongxiang Zhao; Huan Yang; Shengqing Tang

2014-01-01T23:59:59.000Z

10

NREL: Technology Deployment - Microgrid Design  

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

Microgrid Design Microgrid Design Photo of a microgrid test site at the National Wind Technology Center. NREL designs independent electrical generation and distribution systems called microgrids, which deliver energy that is reliable, economical, and sustainable. NREL experts work with military, government, industry, and other organizations that cannot afford to lose power to develop reliable and cost-effective microgrid systems. Expertise and Knowledge NREL offers microgrid technical expertise and project support that includes engineering, energy analysis and modeling, financial analysis, and energy management. Our comprehensive and innovative approach to microgrid design is called Continuously Optimized Reliable Energy (CORE) Microgrids. The CORE microgrid approach includes advantages such as:

11

CERTS Microgrid Laboratory Test Bed - PIER Final Project Report  

SciTech Connect

The objective of the CERTS Microgrid Laboratory Test Bed project was to enhance the ease of integrating small energy sources into a microgrid. The project accomplished this objective by developing and demonstrating three advanced techniques, collectively referred to as the CERTS Microgrid concept, that significantly reduce the level of custom field engineering needed to operate microgrids consisting of small generating sources. The techniques comprising the CERTS Microgrid concept are: 1) a method for effecting automatic and seamless transitions between grid-connected and islanded modes of operation; 2) an approach to electrical protection within the microgrid that does not depend on high fault currents; and 3) a method for microgrid control that achieves voltage and frequency stability under islanded conditions without requiring high-speed communications. The techniques were demonstrated at a full-scale test bed built near Columbus, Ohio and operated by American Electric Power. The testing fully confirmed earlier research that had been conducted initially through analytical simulations, then through laboratory emulations, and finally through factory acceptance testing of individual microgrid components. The islanding and resychronization method met all Institute of Electrical and Electronics Engineers 1547 and power quality requirements. The electrical protections system was able to distinguish between normal and faulted operation. The controls were found to be robust and under all conditions, including difficult motor starts. The results from these test are expected to lead to additional testing of enhancements to the basic techniques at the test bed to improve the business case for microgrid technologies, as well to field demonstrations involving microgrids that involve one or mroe of the CERTS Microgrid concepts.

Eto, Joseph H.; Eto, Joseph H.; Lasseter, Robert; Schenkman, Ben; Klapp, Dave; Linton, Ed; Hurtado, Hector; Roy, Jean; Lewis, Nancy Jo; Stevens, John; Volkommer, Harry

2008-07-25T23:59:59.000Z

12

Microgrid Activities | Department of Energy  

Energy Savers (EERE)

Microgrid(tm) Electricity Advisory Committee Technology Development Smart Grid Demand Response Federal Smart Grid Task Force Distributed Energy Microgrids Recovery Act...

13

Abstract -This paper presents the coordinated control of distributed energy storage systems (DESSs) in DC micro-grids.  

E-Print Network (OSTI)

) in DC micro-grids. In order to balance the state-of-charge (SoC) of each energy storage unit (ESU--Droop control; distributed energy storage system (DESS); DC micro-grids; state-of-charge (SoC) I. INTRODUCTION ith the objective to electrify remote areas and energy islands, the micro-grid concept is gaining more

Vasquez, Juan Carlos

14

Sandia National Laboratories: Microgrid  

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

Mesa del Sol, Microgrid, News, News & Events, Partnership, Photovoltaic, Renewable Energy, SMART Grid, Solar, Systems Analysis, Systems Engineering The Mesa del Sol...

15

Arnold Schwarzenegger CERTS MICROGRID  

E-Print Network (OSTI)

equipment operation ... 4.0 Procedures ­ CERTS Microgrid Test Bed Lockout/Tagout 5.0 Procedures ­ General 5

16

Expert energy management of a micro-grid considering wind energy uncertainty  

Science Journals Connector (OSTI)

Abstract Recently, the use of wind generation has rapidly increased in micro-grids. Due to the fluctuation of wind power, it is difficult to schedule wind turbines (WTs) with other distributed energy resources (DERs). In this paper, we propose an expert energy management system (EEMS) for optimal operation of \\{WTs\\} and other \\{DERs\\} in an interconnected micro-grid. The main purpose of the proposed EEMS is to find the optimal set points of \\{DERs\\} and storage devices, in such a way that the total operation cost and the net emission are simultaneously minimized. The EEMS consists of wind power forecasting module, smart energy storage system (ESS) module and optimization module. For optimal scheduling of WTs, the power forecasting module determines the possible available capacity of wind generation in the micro-grid. To do this, first, an artificial neural network (ANN) is used to forecast wind speed. Then, the obtaining results are used considering forecasting uncertainty by the probabilistic concept of confidence interval. To reduce the fluctuations of wind power generation and improve the micro-grid performances, a smart energy storage system (ESS) module is used. For optimal management of the ESS, the comprehensive mathematical model with practical constraints is extracted. Finally, an efficient modified Bacterial Foraging Optimization (MBFO) module is proposed to solve the multi-objective problem. An interactive fuzzy satisfying method is also used to simulate the trade-off between the conflicting objectives (cost and emission). To evaluate the proposed algorithm, the EEMS is applied to a typical micro-grid which consists of various DERs, smart ESS and electrical loads. The results show that the EEMS can effectively coordinate the power generation of \\{DERs\\} and ESS with respect to economic and environmental considerations.

Mehdi Motevasel; Ali Reza Seifi

2014-01-01T23:59:59.000Z

17

Progress and problems in micro-grid protection schemes  

Science Journals Connector (OSTI)

Abstract Globally, gradual depletion of fossil fuel resources, poor energy efficiency and environmental pollution are among the main problems faced in the conventional power system. This leads to a new trend of generating power locally by using Distributed Energy Resources (DERs) at distribution voltage level. The concept of micro-grid has appeared as an attractive alternative for integration of \\{DERs\\} in the distribution networks which has numerous advantages in terms of reliability and power quality. Despite the advantages, several challenges are still hindering the development of micro-grids. One of the challenges is micro-grid protection, and to resolve this, researchers have been working to develop different protection schemes. The objective of this study is to review previous research works on the existing protection strategies deployed in addressing micro-grid protection issues in both grid-connected and islanded mode of operation.

Sohrab Mirsaeidi; Dalila Mat Said; Mohd. Wazir Mustafa; Mohd. Hafiz Habibuddin; Kimia Ghaffari

2014-01-01T23:59:59.000Z

18

International Microgrid Assessment: Governance, INcentives, and Experience (IMAGINE)  

E-Print Network (OSTI)

Canadian Solar. The all DC micro-grid project will utilizeand control) Secure micro-grid generation & distribution (Installation Smart Micro-Grid Islanded Installation High

Marnay, Chris

2014-01-01T23:59:59.000Z

19

Photocatalytic performance of TiO2 thin films connected with Cu micro-grid  

Science Journals Connector (OSTI)

Aiming at reducing the recombination of photo-induced carriers in semiconductor photocatalytic process, we prepared TiO2...thin film with its surface modified by a connected Cu micro-grid via a microsphere lithog...

HaiLing Zhu; JunYing Zhang; TianMin Wang

2009-08-01T23:59:59.000Z

20

Microgrids for Rural Electrification  

E-Print Network (OSTI)

microgrids, electricity market design, institutional barriers, and socio-political aspects of technology adoption to inform sound policy and private decision making. Ranjit Deshmukh is a researcher- partment of Engineering and Public Policy. He is the Director of the Carnegie Mellon Electricity Industry

Note: This page contains sample records for the topic "modified microgrid concept" 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

Investigation on Control Issues in Power Converters for Advanced Micro-Grid Operations  

Science Journals Connector (OSTI)

This paper investigates a novel design concept, in which a hybrid power interface system (HPIS) is constructed to work smartly in various micro-grid (MG) operations. Some distributed generation (...

Tsao-Tsung Ma

2014-01-01T23:59:59.000Z

22

2012 Microgrid Workshop Summary Released  

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

The Department of Energy has released the summary report from the July 30-31, 2012 Microgrid Workshop presented by the Office of Electricity Delivery and Energy Reliability at the Illinois Institute of Technology in Chicago. The workshop was held in response to discussions at the preceding DOE Microgrid Workshop, held in August 2011, which called for sharing lessons learned and best practices for system integration from existing projects in the U.S. (including military microgrids) and internationally.

23

Why Two Grids Can Be Better Than One -How the CERTS Microgrid Evolved  

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

Why Two Grids Can Be Better Than One -How the CERTS Microgrid Why Two Grids Can Be Better Than One -How the CERTS Microgrid Evolved from Concept to Practice Why Two Grids Can Be Better Than One -How the CERTS Microgrid Evolved from Concept to Practice Congress, concerned about the reliability of national electricity transmission, turned to the U.S. Department of Energy (DOE) for guidance in the late 1990s. What started as a conversation about maximizing distributed generation to relieve stress on an overtaxed grid has evolved into on-the-ground applications. Proponents envision limitless industrial and commercial applications. Why Two Grids Can Be Better Than One -How the CERTS Microgrid Evolved from Concept to Practice More Documents & Publications Electricity Advisory Committee Meeting Presentations October 2011 -

24

Intelligent demand side energy management system for autonomous polygeneration microgrids  

Science Journals Connector (OSTI)

Autonomous polygeneration microgrids is a novel approach in addressing the needs of remote areas. These needs can include power, fuel for transportation in the form of hydrogen, potable water through desalination and space heating and cooling. This approach has been investigated technically and economically and has proved viable. Further research has taken place in the supervisory management of this topology using computational intelligence techniques like fuzzy logic, which has optimized the concept minimizing the sizes of the installed components. The optimal design of the system can meet, though, only the design principles and needs. In reality experience has shown that most autonomous power systems operate out of specifications very shortly after installation or after a couple of years new needs arise and it is not possible economic wise for the people to extend it. In these cases the microgrid would struggle to cover the increased needs and in the end fail, causing blackouts. A solution to this is partial load shedding in an intelligent manner. This paper presents a multi agent system for intelligent demand side management of the polygeneration microgrid topology which also includes grey prediction algorithms for better management. This approach can also be used for designing the optimal polygeneration microgrid for a given amount of an investment. The results show that the proposed intelligent demand side management system can address its design principles successfully and guaranty the most effective operation even in conditions near and over the limits of the design specification of the autonomous polygeneration microgrid.

George Kyriakarakos; Dimitrios D. Piromalis; Anastasios I. Dounis; Konstantinos G. Arvanitis; George Papadakis

2013-01-01T23:59:59.000Z

25

2012 Microgrid Workshop Report  

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

and Energy Reliability Smart Grid R&D Program Summary Report: 2012 DOE Microgrid Workshop July 30-31, 2012 Chicago, Illinois 2012 DOE Microgrid Workshop Report Page i Acknowledgment The U.S. Department of Energy (DOE) would like to acknowledge the support provided by the organizations represented on the workshop planning committee in developing the workshop process and sessions. The preparation of this workshop report was coordinated by Energy & Environmental Resources Group, LLC (E2RG). The report content is based on the workshop session discussions, with session summary descriptions taken from the report-out presentations by individual teams during the closing plenary. Contributions to this report by all workshop participants, via expressed viewpoints during the

26

Microgrids in active network managementPart I: Hierarchical control, energy storage, virtual power plants, and market participation  

Science Journals Connector (OSTI)

Abstract The microgrid concept has been closely investigated and implemented by numerous experts worldwide. The first part of this paper describes the principles of microgrid design, considering the operational concepts and requirements arising from participation in active network management. Over the last several years, efforts to standardize microgrids have been made, and it is in terms of these advances that the current paper proposes the application of IEC/ISO 62264 standards to microgrids and Virtual Power Plants, along with a comprehensive review of microgrids, including advanced control techniques, energy storage systems, and market participation in both island and grid-connection operation. Finally, control techniques and the principles of energy-storage systems are summarized in a comprehensive flowchart.

Omid Palizban; Kimmo Kauhaniemi; Josep M. Guerrero

2014-01-01T23:59:59.000Z

27

Influence of Metal (Au, Ag) Micro-Grid on the Photocatalytic Activity of TiO2 Film  

Science Journals Connector (OSTI)

In this paper, we prepared TiO2...thin film with the surface modified by a connected Au micro-grid via a microsphere lithography strategy, and the...2 film. The photocatalytic activity improved as Au loading incr...

Chao Cai; Junying Zhang; Feng Pan; Weiwei Zhang; Hailing Zhu

2008-06-01T23:59:59.000Z

28

Definition: Microgrids | Open Energy Information  

Open Energy Info (EERE)

Microgrids Microgrids Jump to: navigation, search Dictionary.png Microgrids A microgrid is an electrical system that includes multiple loads and distributed energy resources that can be operated in parallel with the broader utility grid or as an electrical island.[1] View on Wikipedia Wikipedia Definition View on Reegle Reegle Definition No reegle definition available, No reegle definition available., Distributed generation, also called on-site generation, dispersed generation, embedded generation, decentralized generation, decentralized energy or distributed energy, generates electricity from many small energy sources. Currently, industrial countries generate most of their electricity in large centralized facilities, such as fossil fuel nuclear or hydropower plants. These plants have excellent economies of scale, but usually

29

Dynamics and challenges of microgrids implementation  

E-Print Network (OSTI)

Microgrids have the capability of operating on an island mode as well as an integrated mode with the smart grid, depending on the requirement and objectives. Recently, microgrids projects have gained popularity both in ...

Sabhlok, Vikalp Pal

2013-01-01T23:59:59.000Z

30

State Estimation of the Micro-grid  

Science Journals Connector (OSTI)

For the goal of actual needs of power companies, this chapter develops a state estimation procedure of the micro-grid, using branch currents as state variables, ... In this chapter, an IEEE-33 nodes micro-grid is...

Jinling Lu; Guodong Zhu; Yuyang Miao

2014-01-01T23:59:59.000Z

31

Energy Security: Microgrid Planning and Design (Presentation)  

SciTech Connect

Energy Security: Microgrid Planning and Design presentation to be given at the 2012 WREF in Denver, CO.

Giraldez, J.

2012-05-01T23:59:59.000Z

32

Multi-Agent based Microgrid Coordinated Control  

Science Journals Connector (OSTI)

There are obvious advantages in collaborative work for the system based on the multi-agent technology. According to a concrete microgrid in this paper, multi-agent control system is designed based on the microgrid control goals. The structure of multi-agent microgrid control system and the specific functions of each agent are proposed, expounding the microgrid coordinated control strategies at the grid-connected and islanded state respectively. The model of microgrid based on the multi-agent is established in the MATLAB/SIMULINK. The simulation model has simulated the microgrid's characteristics of running operation performance both under the grid-connected and islanded situation. Simulation results show that multi-agent microgrid control system can fully satisfy the requirement of power balance control and inhibit frequency fluctuation under the two situation.

Zhou Xiaoyan; Liu Tianqi; Liu Xueping

2012-01-01T23:59:59.000Z

33

A Review of DC Micro-grid Protection  

Science Journals Connector (OSTI)

In this paper, an overview of DC micro-grid is described, which includes the status of DC micro-grid protection and its future development. The paper presents the key techniques of DC micro-grid protection. So fa...

Yuhong Xie; Jia Ning; Yanquan Huang

2013-01-01T23:59:59.000Z

34

Fault Diagnosis of Micro-grid Based on Petri Net  

Science Journals Connector (OSTI)

Micro-grid is the next generation of distribution system, ... 2010). This chapter analyzes the characteristics of Micro-grid and describes the typical form of Micro-grid. Considering the requirements of protectio...

Hongxia Wu; Guoming Yang; Ailing Zhang

2014-01-01T23:59:59.000Z

35

Distributed Generation Investment by a Microgrid Under Uncertainty  

E-Print Network (OSTI)

flexibility. The DG investment opportunity is similar to aDistributed Generation Investment by a Microgrid Under06 Distributed Generation Investment by a Microgrid Under

Siddiqui, Afzal; Marnay, Chris

2006-01-01T23:59:59.000Z

36

The Advanced Microgrid: Integration and Integration and Interoperabili...  

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

Advanced Microgrid: Integration and Integration and Interoperability (March 2014) This white paper provides a synopsis of many elements of microgrid component technologies and...

37

Distributed Generation Investment by a Microgrid Under Uncertainty  

E-Print Network (OSTI)

option on natural gas generation, which increases in valueL ABORATORY Distributed Generation Investment by a MicrogridORMMES06 Distributed Generation Investment by a Microgrid

Siddiqui, Afzal; Marnay, Chris

2006-01-01T23:59:59.000Z

38

The Advanced Microgrid: Integration and Integration and Interoperability (March 2014)  

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

This white paper provides a synopsis of many elements of microgrid component technologies and system configurations that can subsequently be used for an advanced microgrid development activity. The paper offers a compilation of microgrid status, advanced microgrid goals and requirements, new challenges and opportunities, tools for designs, and tools to strengthen infrastructure and standards activities.

39

Microgrid Workshop Report August 2011 | Department of Energy  

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

Microgrid Workshop Report August 2011 Microgrid Workshop Report August 2011 Microgrid Workshop Report August 2011 The U.S. Department of Energy (DOE) Office of Electricity Delivery and Energy Reliability (OE) held the Microgrid Workshop on August 30-31, 2011, in San Diego, California. The purpose of the workshop was to convene experts and practitioners to assist the DOE in identifying and prioritizing research and development (R&D) areas in the field of microgrids. The targets of the OE microgrid initiative are to develop commercial scale microgrid systems capable of reducing outage time of required loads by >98% while reducing emissions by >20% and improving system energy efficiencies by >20%, by 2020. Microgrid Workshop Report August 2011.pdf More Documents & Publications

40

Optimal Operation for Cogenerating System of Micro-grid Network  

Science Journals Connector (OSTI)

This paper presents a mathematical model for optimal operating cogeneration of Micro-Grid Network. The electrical and thermal energy production ... solution of Optimal operation for cogenerating system of micro-grid

Phil-Hun Cho; Hak-Man Kim; Myong-Chul Shin

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Web-Based Economic and Environmental Optimization of Microgrids  

E-Print Network (OSTI)

Our Contribution to Microgrids Technology research TestingEconomic & environmental technology selection Economic &Lai Environmental Energy Technologies Division January 20,

Stadler, Michael

2014-01-01T23:59:59.000Z

42

Analysis of electric vehicle interconnection with commercial building microgrids  

E-Print Network (OSTI)

energy costs, CO 2 emissions, or multiple objectives of providing services to a building microgrid produces technology neutral

Stadler, Michael

2011-01-01T23:59:59.000Z

43

DOD/NREL Model Integrates Vehicles, Renewables & Microgrid (Fact Sheet)  

SciTech Connect

Fact sheet on microgrid model created by the Electric Vehicle Grid Integration program at the Fort Carson Army facility.

Not Available

2011-02-01T23:59:59.000Z

44

2012 SG Peer Review - SDE&G Borrego Springs Microgrid - Tom Bialek, SDG&E  

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

Peer Review Meeting Peer Review Meeting SDG&E Borrego Springs Microgrid Demonstration Project Thomas Bialek, PhD, PE Principal Investigator June 8, 2012 December 2008 Borrego Springs Microgrid Demonstration Project Objective Life-cycle Funding ($K) Budget Period 1 FY2008 - FY2010 Budget Period 2 FY2011 - FY2013 Total DOE Funding $1,241 $6,237 $7,477 Technical Scope Conduct a pilot scale "proof-of concept" demonstration of how advanced information- based technologies and distributed energy resources (DER) may increase asset utilization and reliability of the power grid in support of the national agenda. Establish a microgrid demonstration to prove the effectiveness of integrating multiple DER technologies, energy storage, feeder automation system technologies, and outage management

45

2012 Microgrid Workshop Summary Released | Department of Energy  

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

2012 Microgrid Workshop Summary Released 2012 Microgrid Workshop Summary Released 2012 Microgrid Workshop Summary Released September 13, 2012 - 2:22pm Addthis The Department of Energy has released the summary report from the July 30-31, 2012 Microgrid Workshop presented by the Office of Electricity Delivery and Energy Reliability at the Illinois Institute of Technology in Chicago. The workshop was held in response to discussions at the preceding DOE Microgrid Workshop, held in August 2011, which called for sharing lessons learned and best practices for system integration from existing projects in the U.S. (including military microgrids) and internationally. In addition, the purpose of the workshop was to determine system integration gap areas in meeting the DOE program 2020 targets for microgrids and to define specific R&D activities for the needed, but unmet,

46

2012 DOE Microgrid Workshop Summary Report (September 2012) | Department of  

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

DOE Microgrid Workshop Summary Report (September 2012) DOE Microgrid Workshop Summary Report (September 2012) 2012 DOE Microgrid Workshop Summary Report (September 2012) The July 30-31, 2012 Microgrid Workshop was presented by the Office of Electricity Delivery and Energy Reliability at the Illinois Institute of Technology in Chicago. The workshop was held in response to discussions at the preceding DOE Microgrid Workshop, held in August 2011, which called for sharing lessons learned and best practices for system integration from existing projects in the U.S. (including military microgrids) and internationally. An additional purpose of the workshop was to determine system integration gap areas in meeting the DOE program 2020 targets for microgrids and to define specific R&D activities for the needed, but unmet, functional

47

Department of Mechanical Engineering Presents: "Towards Optimal Investment, Planning and Control of Microgrids"  

E-Print Network (OSTI)

on the optimal investment, planning, and control of distributed micro-grids. A micro-grid is characterized by its.University campuses and emerging advanced sustainable communities are examples of micro-grids. Our planning

Keaveny, Tony

48

Power Characteristics of a Fuel Cell Micro-grid with Wind Power Generation  

Science Journals Connector (OSTI)

A micro-grid technique is predicted to be effective with ... , when renewable energy is connected to a micro-grid, there is potential to reduce the amount ... discharge [21, 22, 91]. A micro-grid has an interconn...

2009-01-01T23:59:59.000Z

49

Grid Simulator for Power Quality Assessment of Micro-Grids  

E-Print Network (OSTI)

1 Grid Simulator for Power Quality Assessment of Micro-Grids Joaqu´in Eloy-Garc´iaa , Juan C-to-back to a 380 V three-phase grid and feeding a micro-grid composed of two inverter interfaced distributed of the simulator. Finally, a case study is presented by testing a micro-grid. Index Terms Grid Simulator, Power

Vasquez, Juan Carlos

50

The Advanced Microgrid: Integration and Integration and Interoperabili...  

Office of Environmental Management (EM)

standards activities. It complements workshop reports and information provided by OE's Smart Grid R&D Program and other microgrid conference proceedings. With their...

51

International Microgrid Assessment: Governance, INcentives, and Experience (IMAGINE)  

E-Print Network (OSTI)

microgrids 3. Match technology with end-use requirements 4.Ministry of Science and Technology, and National EnergyNew Energy and Industrial Technology Organization), Nippon

Marnay, Chris

2014-01-01T23:59:59.000Z

52

International Microgrid Assessment: Governance,INcentives, and Experience (IMAGINE)  

E-Print Network (OSTI)

Heat pumps Diesel gensets CHP Fuel cell Microturbines Hydroor microturbines, possibly in CHP systems. Many renewableas well as targets for CHP. Microgrids offer the abilities

Romankiewicz, John

2014-01-01T23:59:59.000Z

53

Your own energy "island"? ORNL microgrid could standardize small...  

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

Your own energy "island"? ORNL microgrid could standardize small, self-sustaining electric grids (hi-res image) When Department of Energy and Oak Ridge National Laboratory...

54

Microgrids in the Evolving Electricity Generation and Delivery Infrastructure  

E-Print Network (OSTI)

1. application of combined heat and power (CHP) technology,of microgrids, combined heat and power, heterogeneous PQR,reciprocating engines, combined heat and power technologies,

Marnay, Chris; Venkataramanan, Giri

2006-01-01T23:59:59.000Z

55

Distributed Generation Investment by a Microgrid Under Uncertainty  

E-Print Network (OSTI)

DG) and combined heat and power (CHP) applications matchedpower generation with combined heat and power applications,tax on microgrid combined heat and power adoption, Journal

Siddiqui, Afzal; Marnay, Chris

2006-01-01T23:59:59.000Z

56

Webinar Presentation: Energy Storage Solutions for Microgrids (November  

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

Presentation: Energy Storage Solutions for Microgrids Presentation: Energy Storage Solutions for Microgrids (November 2012) Webinar Presentation: Energy Storage Solutions for Microgrids (November 2012) On November 7, 2012, Clean Energy States Aliance (CESA) hosted a webinar with Connecticut DEEP in conjuction with Sandia National Lab and DOE on State and Federal Energy Storage Technology Partnership (ESTAP). The four guest speakers were Veronica Szczerkowski (CT DEEP), Imre Gyuk (DOE), Matt Lazarewicz (CESA consultant), and Dan Borneo (Sandia). The combined presentations are available below. Webinar Presentation: Energy Storage Solutions for Microgrids (November 2012) More Documents & Publications Energy Storage Systems 2012 Peer Review Presentations - Day 3, Session 1 Fact Sheet: Energy Storage Technology Advancement Partnership (October

57

Reliability of islanded microgrids with stochastic generation and prioritized load  

E-Print Network (OSTI)

The potential to improve distribution system reliability is a primary motivation behind the development and deployment of microgrids. Previous studies have illustrated substantial reliability benefits of dispatchable ...

Marden, Mirjana Milosevic

58

WindTurbineGenerator Introduction of the Renewable Micro-Grid Test-Bed  

E-Print Network (OSTI)

Introduction of the Renewable Micro-Grid Test-Bed Dr. Wenxin Liu Smart Micro-grid and Renewable Technology University Topology of the Overall Experimental Platform Photo of the Micro-grid Test-bed Overview of the Micro-grid Test-Bed Cubicle #1: Main & PV Simulator PV Simulator: 3kW, 0~200V, 18A Unidirectional

Johnson, Eric E.

59

Fabrication of phosphor micro-grids using proton beam lithography.  

SciTech Connect

A new nuclear microscopy technique called ion photon emission microscopy or IPEM was recently invented. IPEM allows analysis involving single ions, such as ion beam induced charge (IBIC) or single event upset (SEU) imaging using a slightly modified optical microscope. The spatial resolution of IPEM is currently limited to more than 10 {micro}m by the scattering and reflection of ion-induced photons, i.e. light blooming or spreading, in the ionoluminescent phosphor layer. We are developing a 'Microscopic Gridded Phosphor' (also called Black Matrix) where the phosphor nanocrystals are confined within the gaps of a micrometer scale opaque grid, which limits the amount of detrimental light blooming. MeV-energy proton beam lithography is ideally suited to lithographically form masks for the grid because of high aspect ratio, pattern density and sub-micron resolution of this technique. In brief, the fabrication of the grids was made in the following manner: (1) a MeV proton beam focused to 1.5-2 {micro}m directly fabricated a matrix of pillars in a 15 {micro}m thick SU-8 lithographic resist; (2) 7:1 aspect ratio pillars were then formed by developing the proton exposed area; (3) Ni (Au) was electrochemically deposited onto Cu-coated Si from a sulfamate bath (or buffered CN bath); (4) the SU-8 pillars were removed by chemical etching; finally (5) the metal micro-grid was freed from its substrate by etching the underlying Cu layer. Our proposed metal micro-grids promise an order-of-magnitude improvement in the resolution of IPEM.

Rossi, Paolo (University of Padova and INFN, Padova, Italy); Antolak, Arlyn J.; Provencio, Paula Polyak; Doyle, Barney Lee; Malmqvist, Klas (Lund Institute of Technology, Lund, Sweden); Hearne, Sean Joseph; Nilsson, Christer (Lund Institute of Technology, Lund, Sweden); Kristiansson, Per (Lund Institute of Technology, Lund, Sweden); Wegden, Marie (Lund Institute of Technology, Lund, Sweden); Elfman, Mikael (Lund Institute of Technology, Lund, Sweden); Pallon, Jan (Lund Institute of Technology, Lund, Sweden); Auzelyte, Vaida (Lund Institute of Technology, Lund, Sweden)

2005-07-01T23:59:59.000Z

60

Randomized auction design for electricity markets between grids and microgrids  

Science Journals Connector (OSTI)

This work studies electricity markets between power grids and microgrids, an emerging paradigm of electric power generation and supply. It is among the first that addresses the economic challenges arising from such grid integration, and represents the ... Keywords: approximation algorithms, mechanism design, microgrids, power grid, unit commitment problem

Linquan Zhang; Zongpeng Li; Chuan Wu

2014-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Hybrid Renewable Energy Investment in Microgrid Hao Wang, Jianwei Huang  

E-Print Network (OSTI)

Hybrid Renewable Energy Investment in Microgrid Hao Wang, Jianwei Huang Network Communications: {haowang, jwhuang}@ie.cuhk.edu.hk Abstract--Both solar energy and wind energy are promising renewable the hybrid renewable energy investment in the microgrid. We jointly consider the investment and operation

Huang, Jianwei

62

Microgrids and Heterogeneous Power Quality and Reliability  

SciTech Connect

This paper describes two stylized alternative visions of how the power system might evolve to meet future requirements for the high quality electricity service that modern digital economies demand, a supergrids paradigm and a dispersed paradigm. Some of the economics of the dispersed vision are explored, and perspectives are presented on both the choice of homogeneous universal power quality upstream in the electricity supply chain and on the extremely heterogeneous requirements of end-use loads. It is argued that meeting the demanding requirements of sensitive loads by local provision of high quality power may be more cost effective than increasing the quality of universal homogeneous supply upstream in the legacy grid. Finally, the potential role of microgrids in delivering heterogeneous power quality is demonstrated by reference to two ongoing microgrid tests in the U.S. and Japan.

LaCommare, Kristina; Marnay, Chris

2007-10-01T23:59:59.000Z

63

Modeling of Diesel Combustion, Soot and NO Emissions Based on a Modified Eddy Dissipation Concept  

E-Print Network (OSTI)

and soot emissions modeling, computational diesel engine simulations, eddy dissipation concept #12 ignition, combustion, NOx and soot emissions over a wide range of operating conditions in a diesel engine simulations of physical and chemical processes within a diesel engine remain a challenge due to the many

Im, Hong G.

64

2012 SG Peer Review - Energy Surety, Microgrids - Mike Hightower, SNL  

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

Support of Renewable and Distributed Support of Renewable and Distributed System Integration and Microgrids Mike Hightower Sandia National Laboratories June 7, 2012 December 2008 Support RDSI and Microgrids Objective Life-cycle Funding Summary ($K) FY 09 to FY 11 FY12, authorized FY13, requested Out-year(s) ~$2000K $870K $1000K $1000K Technical Scope To address current shortcomings of power reliability and security, Sandia is investigating advanced microgrid approaches to locate more secure and robust distributed energy generation and storage sources near loads as a way to better manage power generation and to improve overall power reliability and security. Microgrids are equally applicable to military, industrial, and utility distribution applications. Sandia's microgrid research utilizes smart grid

65

Distributed Generation Investment by a Microgrid Under Uncertainty  

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

Distributed Generation Investment by a Microgrid Under Uncertainty Distributed Generation Investment by a Microgrid Under Uncertainty Speaker(s): Afzal Siddiqui Date: July 24, 2006 - 12:00pm Location: 90-3122 This study examines a California-based microgrid's decision to invest in a distributed generation (DG) unit that operates on natural gas. While the long-term natural gas generation cost is stochastc, we initially assume that the microgrid may purchase electricity at a fixed retail rate from its utility. Using the real options approach, we find natural gas generation cost thresholds that trigger DG investment. Furthermore, the consideration of operational flexibility by the microgrid accelerates DG investment, while the option to disconnect entirely from the utility is not attractive. By allowing the electricity price to be stochastic, we next determine an

66

Load Response Characteristics of a Fuel Cell Micro-grid with Control of the Number of Units  

Science Journals Connector (OSTI)

The micro-grid is expected to reduce the discharge of ... in an emergency [2123]. A micro-grid technique connects energy equipment, such as an ... cooperating piece of equipment. In forming a micro-grid, the coo...

2009-01-01T23:59:59.000Z

67

NREL: Technology Transfer - NREL Designing Microgrid to Back Up USAFA  

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

NREL Designing Microgrid to Back Up USAFA Critical Loads NREL Designing Microgrid to Back Up USAFA Critical Loads January 30, 2013 NREL grid and dispatchable power experts are helping the United States Air Force Academy (USAFA) in Colorado Springs, Colorado, develop a system to maintain power to critical loads when power is unavailable from the local utility. Under an agreement with USAFA and in collaboration with Colorado Springs Utilities, NREL will design a USAFA microgrid using its Continuously Optimized Reliable Energy (CORE) Microgrid Design process. The four-step CORE process evaluates existing reports, gathers data, analyzes designs, and monitors project implementation and installation. The data gathering and preliminary generation design evaluation phases are nearly complete. Generation options identified during the preliminary

68

NREL: Technology Deployment - NREL Designing Microgrid to Back Up USAFA  

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

NREL Designing Microgrid to Back Up USAFA Critical Loads NREL Designing Microgrid to Back Up USAFA Critical Loads January 30, 2013 NREL grid and dispatchable power experts are helping the United States Air Force Academy (USAFA) in Colorado Springs, Colorado, develop a system to maintain power to critical loads when power is unavailable from the local utility. Under an agreement with USAFA and in collaboration with Colorado Springs Utilities, NREL will design a USAFA microgrid using its Continuously Optimized Reliable Energy (CORE) Microgrid Design process. The four-step CORE process evaluates existing reports, gathers data, analyzes designs, and monitors project implementation and installation. The data gathering and preliminary generation design evaluation phases are nearly complete. Generation options identified during the preliminary

69

Effect of Heat and Electricity Storage and Reliability on Microgrid  

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

Effect of Heat and Electricity Storage and Reliability on Microgrid Effect of Heat and Electricity Storage and Reliability on Microgrid Viability: A Study of Commercial Buildings in California and New York States Title Effect of Heat and Electricity Storage and Reliability on Microgrid Viability: A Study of Commercial Buildings in California and New York States Publication Type Report Year of Publication 2009 Authors Stadler, Michael, Chris Marnay, Afzal S. Siddiqui, Judy Lai, Brian Coffey, and Hirohisa Aki Pagination 106 Date Published 03/2006 Publisher LBNL City Berkeley Keywords consortium for electric reliability technology solutions (certs), energy analysis and environmental impacts department Abstract Berkeley Lab has for several years been developing methods for selection of optimal microgrid systems, especially for commercial building applications, and applying these methods in the Distributed Energy Resources Customer Adoption Model (DER-CAM). This project began with 3 major goals:

70

Localizing Micro-grids Research for the SE Asian Region  

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

Localizing Micro-grids Research for the SE Asian Region Localizing Micro-grids Research for the SE Asian Region Speaker(s): Cheng-Guan (Michael) Quah Valerie Choy Date: December 3, 2010 - 12:00pm Location: 90-3122 This presentation discusses developments (and test-beds) of micro-grids and distributed generation systems that are on-going in Singapore and poses the question as to whether simpler versions of such systems would be applicable to meet the challenges of rural electrification and energy poverty particularly those of its closest neighbors. Southeast Asia is an ethnically and culturally diverse region comprising more than 10 nations where 160 million people still live without electricity. Off-grid electrification for rural village communities and eco-resorts using DG and micro-grid systems are conceivable but many technical, political, cultural

71

Adaptive load control of microgrids with non-dispatchable generation  

E-Print Network (OSTI)

Intelligent appliances have a great potential to provide energy storage and load shedding for power grids. Microgrids are simulated with high levels of wind energy penetration. Frequency-adaptive intelligent appliances are ...

Brokish, Kevin Martin

2009-01-01T23:59:59.000Z

72

CERTS Microgrid Laboratory Test Bed - PIER Final Project Report  

E-Print Network (OSTI)

of AEPSC. DTC Registered Procedure CERTS Microgrid Test PlanTarget Group: Assigned Procedure Review Date: 23 Feb. 2008document is to establish procedures for testing of the CERTS

Eto, Joseph H.

2008-01-01T23:59:59.000Z

73

Distributed Generation Investment by a Microgrid under Uncertainty++++ Afzal Siddiqui  

E-Print Network (OSTI)

1 Distributed Generation Investment by a Microgrid under Uncertainty++++ Afzal Siddiqui University's decision to invest in a distributed generation (DG) unit fuelled by natural gas. While the long. KEYWORDS. OR in Energy; Distributed Generation; Real Options; Optimal Investment. 1. INTRODUCTION

Guillas, Serge

74

Hardware simulation of diesel generator and microgrid stability  

E-Print Network (OSTI)

Over the last few years, people have begun to depend less on large power plants with extensive distribution systems, and more on local distributed generation sources. A microgrid, a local collection of distributed generators, ...

Zieve, Michael M

2012-01-01T23:59:59.000Z

75

Design and implementation of a microgrid-capable solar inverter  

E-Print Network (OSTI)

The notion of a practical microgrid -- a small, interconnected system of generators and loads that operates both synchronously with a larger, centralized grid and isolated from the grid, autonomously -- has grown popular ...

Darcey, Gavin M

2013-01-01T23:59:59.000Z

76

Distributed Generation Investment by a Microgrid under Uncertainty  

E-Print Network (OSTI)

power generation with combined heat and power applications.tax on microgrid combined heat and power adoption. JournalCHP Application Center. Combined heat and power in a dairy.

Siddiqui, Afzal

2008-01-01T23:59:59.000Z

77

Control Methods and Simulations of Micro-grid  

Science Journals Connector (OSTI)

The micro-grids control methods and simulations are presented...P/Q control is adopted. However, the control method is changed to U/f...control when it turns to the islanded mode. To demonstrate the operation of...

He-Jin Liu; Ke-Jun Li; Ying Sun; Zhen-Yu Zou; Yue Ma

2011-01-01T23:59:59.000Z

78

Renewable Energy Sources Optimization: A Micro-Grid Model Design  

Science Journals Connector (OSTI)

Abstract This paper analyzes the possibility to develop the simple micro-grid model in optimizing the utilization of local renewable energy for on-grid area. The proposed micro-grid model integrates the power plants driven by renewable energy sources employing micro hydro (MHP) and photovoltaic system (PV) which is connected to grid system. This model is analyzed using HOMER and MATLAB software. Based on the load profiles and the availability of water resources, the HOMER simulates the proposed micro-grid model with three options of MHP capacity. The simulation results show that the micro-grid model with the largest capacity MHP produced the lowest energy cost, greatest reduction of CO2 emission, and largest fraction of renewable energy. However, these result required the expensive initial capital cost. In addition, the PV power generation was always recommended with a minimum capacity. Hence, MATLAB results show the performances of the power plants with renewable energy sources were used maximally.

R. Nazir; H.D. Laksono; E.P. Waldi; E. Ekaputra; P. Coveria

2014-01-01T23:59:59.000Z

79

Microsoft Word - Microgrid Notice of Intent.docx  

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

Notice of Intent to Issue Notice of Intent to Issue Funding Opportunity Announcement No.: DE-FOA-0000997 Microgrid Research, Development, and Demonstration The Department of Energy's (DOE) National Energy Technology Laboratory (NETL) intends to issue, on behalf of the DOE Office of Electricity Delivery and Energy Reliability, a Funding Opportunity Announcement (FOA) entitled "Microgrid Research, Development, and Demonstration." The objective of this FOA is to solicit proposals for development and demonstration of commercial-scale microgrid systems having up to 10 megawatts (MW) of aggregated generation capacity. In addition, systems must be proposed that will aid the DOE Microgrid Program with meeting strategic targets by 2020, namely:  reducing outage time of critical loads by >98% at a cost comparable to non-

80

Economic and Emergency Operations of the Storage System in a Microgrid.  

E-Print Network (OSTI)

?? Storage system is one of the critical components of the microgrid. Storage system has broad applicability in short-term and long-term operations of microgrid. Storage (more)

Shaghayegh, Bahramirad

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Plug-and-play voltage and frequency control of islanded microgrids with meshed topology  

E-Print Network (OSTI)

decentralized control scheme for Islanded microGrids (ImGs) composed by the interconnection of Distributed microGrids (ImG) has received major attention. ImGs are self-sufficient micro grids composed of several

Ferrari-Trecate, Giancarlo

82

Voltage and frequency control of islanded microgrids: a plug-and-play approach  

E-Print Network (OSTI)

propose a new decentralized control scheme for Islanded microGrids (ImGs) composed by the interconnection. INTRODUCTION In recent years, research on Islanded microGrids (ImG) has received major attention. ImGs are self

Ferrari-Trecate, Giancarlo

83

Micro-grid Environmental Economic Dispatch Using Improved Linearly Decreasing Weight Particle Swarm Optimization  

Science Journals Connector (OSTI)

Comparing with large power grid, micro-grid is quite different in operation method, energy ... on the environmental economic dispatch of a simplified micro-grid which consists of photovoltaic generation, wind tur...

Gujing Han; Yunhong Xia; Wuzhi Min

2014-01-01T23:59:59.000Z

84

Unbalanced Three-Phase Power Flow Calculation Based on Newton Method for Micro-Grid  

Science Journals Connector (OSTI)

Because of the connection of distributed generation to energy complementary micro-grid, there are multi-supplying points and loop ... power flow calculation based on Newton method for micro-grid is presented, in ...

Jiang Guixiu; Shu Jie; Wu Zhifeng

2012-01-01T23:59:59.000Z

85

Micro-grids: Practical applications of grid technology to small distributed collaborations  

E-Print Network (OSTI)

Micro-Grids: Practical Applications of Grid Technology toof the normal use of the micro-grid we have been describing.Grid system that was used in the Matisse project. MEMS Technology Micro-

Lee, Jason R.

2001-01-01T23:59:59.000Z

86

Optimal Power Sharing for Microgrid with Multiple Distributed Generators  

Science Journals Connector (OSTI)

Abstract This paper describes the active power sharing of multiple distributed generators (DGs) in a microgrid. The operating modes of a microgrid are 1) a grid-connected mode and 2) an autonomous mode. During islanded operation, one DG unit should share its output power with other DG units in exact accordance with the load. Unit output power control (UPC) is introduced to control the active power of DGs. The viability of the proposed power control mode is simulated by MATLAB/SIMULINK.

V. Logeshwari; N. Chitra; A. Senthil Kumar; Josiah Munda

2013-01-01T23:59:59.000Z

87

Study on Smart Energy Storage Technology and Control Strategy in Micro-Grid  

Science Journals Connector (OSTI)

Energy storage technology is an indispensable support for reliable operation of micro-grid (MG). Various forms of energy storage...

Xing-guo Tan; Shan Lu

2012-01-01T23:59:59.000Z

88

An Automatic Load Sharing Approach for a DFIG Based Wind Generator in a Microgrid  

E-Print Network (OSTI)

An Automatic Load Sharing Approach for a DFIG Based Wind Generator in a Microgrid M. A. Barik and H generator. An automatic load sharing approach for a doubly-fed induction generator (DFIG) based wind is useful to manage the load variation of a microgrid. Index Terms--DFIG, load sharing, microgrid, pitch

Pota, Himanshu Roy

89

A Virtual Laboratory for Micro-Grid Information and Communication Infrastructures  

E-Print Network (OSTI)

1 A Virtual Laboratory for Micro-Grid Information and Communication Infrastructures James Weimer reliability. Within the micro-grid, this requires identifying and testing ICT infrastructures infrastructures for micro-grid deployment, this work introduces the Virtual Micro- Grid Laboratory (VMGL

Johansson, Karl Henrik

90

Photocatalytic activity of ZnO films with micro-grid structure  

Science Journals Connector (OSTI)

A layer of zinc oxide (ZnO) micro-grid was deposited on the surface of ZnO ... ZnO film and the regular arrangement of the micro-grid. The microgrid ZnO has a lower specular ... degradation experiments on methyle...

Chunzhi Li; Wenwen Wang; Junying Zhang

2009-09-01T23:59:59.000Z

91

Small-signal dynamic model of a micro-grid including conventional and electronically  

E-Print Network (OSTI)

Small-signal dynamic model of a micro-grid including conventional and electronically interfaced-signal modelling of a micro-grid system that includes conventional (rotating machine) and electronically interfaced deviations in the overall system model and provides a methodology for the analysis of autonomous micro-grid

Lehn, Peter W.

92

CARNEGIE MELLON UNIVERSITY Electric Power Micro-grids: Opportunities and Challenges  

E-Print Network (OSTI)

CARNEGIE MELLON UNIVERSITY Electric Power Micro-grids: Opportunities and Challenges for an Emerging;Electric Power Micro-grids: Barriers and opportunities for an emerging distributed energy architecture ii the value of DERs is the micro-grid architecture, which builds on conventional continuous-use DER

93

Preparation of Micro-grid for the Electron Microscopic Observation with High Magnification  

Science Journals Connector (OSTI)

......1958 letter LETTER Preparation of Micro-grid for the Electron Microscopic Observation...Japan L E T T E R Preparation of Micro-grid for the Electron Microscopic Observation...call this collodion net-work a micro-grid. Procedure of preparation (1......

S. Sakata

1958-01-01T23:59:59.000Z

94

International Journal of Innovations in Engineering and Technology (IJIET) Optimal Rural Microgrid Energy Management Using  

E-Print Network (OSTI)

Abstract-The microgrid concept is a natural evolution of distributed resources that may be used to serve energy to customers in areas where conventional power system approaches cannot satisfy the reliability needs. Microgrids[2] may also provide support to conventional power systems that are too constrained to meet the power demands of customers. This paper presents a case study of a remote village dependent on agriculture, with no grid extension. The remote village consists of 400 people and 200 cattle including poultries, bovines, swine etc. The latitude and longitude of the study area are 30 32 N and 76 39 E respectively. The proposed model consists of Photovoltaic (PV) array, wind energy subsystem, micro hydro, biogas fueled generator and battery storage sub-system. The final goal is to maximize energy output from distributed energy resources (DERs) by Optimization using HOMER. Performance of each component of the model will be evaluated and finally sensitivity analysis will be performed to optimize the system at different conditions.

unknown authors

95

DERIREC 22@Microgrid (Smart Grid Project) | Open Energy Information  

Open Energy Info (EERE)

DERIREC 22@Microgrid (Smart Grid Project) DERIREC 22@Microgrid (Smart Grid Project) Jump to: navigation, search Project Name DERIREC 22@Microgrid Country Spain Headquarters Location Barcelona, Spain Coordinates 41.387917°, 2.169919° 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":41.387917,"lon":2.169919,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

96

Multi-agent system for the operation of an integrated microgrid  

Science Journals Connector (OSTI)

Operation of modern power system has become a complex problem as its focus has shifted to implementing smart grid techniques and integrating distributed renewable energy sources. Integrated microgrid is an innovative control and management architecture at distribution network level where several microgrids are electrically interconnected with each other. This paper presents a multi-agent system (MAS) for the operation of an integrated microgrid. A hierarchical control scheme is used for maximizing the power production output of local distributed generators and optimizing power exchanges among the microgrids as well as power exchange between the main distribution system and the integrated microgrid. This scheme was implemented on the multi-agent system. Simulation studies carried out on the developed system demonstrate the effectiveness of the proposed multi-agent system for the operation of an integrated microgrid.

Thillainathan Logenthiran; Dipti Srinivasan

2012-01-01T23:59:59.000Z

97

Hierarchical Control and Management of Virtual Microgrids for Vehicle Electrification  

E-Print Network (OSTI)

of electrical power generation and delivery. A Smart Grid is an intelligent and automated energy grid and new types of loads such as plug-in (hybrid) electric vehicles (PEVs); (2) optimizing systemHierarchical Control and Management of Virtual Microgrids for Vehicle Electrification Feng Lina

Zhang, Hongwei

98

Technical Report for "Hybrid Renewable Energy Investment in Microgrid"  

E-Print Network (OSTI)

1 Technical Report for "Hybrid Renewable Energy Investment in Microgrid" Hao Wang, Jianwei Huang University of Hong Kong Email: {haowang, jwhuang}@ie.cuhk.edu.hk Abstract--Both solar energy and wind energy are promising renewable sources to meet the world's problem of energy shortage in the near future. In this paper

Huang, Jianwei

99

Sharing Renewable Energy in Smart Microgrids , Zhichuan Huang  

E-Print Network (OSTI)

Sharing Renewable Energy in Smart Microgrids Ting Zhu , Zhichuan Huang , Ankur Sharma , Jikui Su § Department of Computer Science, University of Massachusetts Amherst ABSTRACT Renewable energy harvested from the environment is an at- tractive option for providing green energy to homes. Unfor- tunately, the intermittent

Shenoy, Prashant

100

The Added Economic and Environmental Value of Solar Thermal Systems in Microgrids with Combined Heat and Power  

E-Print Network (OSTI)

with or without combined heat and power (CHP) and contributein Microgrids with Combined Heat and Power Chris Marnay,Microgrids with Combined Heat and Power 1 Chris Marnay a) ,

Marnay, Chris

2010-01-01T23:59:59.000Z

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


101

CO2 Discharged from a Compound Micro-grid of a Hydrogenation City Gas Engine and a Fuel Cell  

Science Journals Connector (OSTI)

The introduction to a urban area of a micro-grid has the following advantages: (a) The ... built; and (c) with an independent micro-grid, the scale of equipment for distributing electricity ... is expected to bec...

2009-01-01T23:59:59.000Z

102

A Framework for the Evaluation of the Cost and Benefits of Microgrids  

E-Print Network (OSTI)

networks," Electric Power Systems Research, vol. 79, no. 2,Microgrids," Electric Power Systems Research, vol. 80, no.resources," Electric Power Systems Research, vol. 77, no. 7,

Morris, Greg Young

2012-01-01T23:59:59.000Z

103

Wireless Communication for Controlling Microgrids: Co-simulation and Performance Evaluation  

SciTech Connect

A microgrid with wireless communication links for microgrid control has been designed and developed. The complete simulation model has been developed in MatLab SimuLink with seamless integration of the power subsystem and the communication subsystem. Unlike the conventional co-simulators that usually glue two existing simulators together by creating an interface, which has a steep learning curve, the proposed simulator is a compact single-unit model. Detailed modeling of the power subsystem and communication system is presented as well as the microgrid control architecture and strategies. The impact of different communication system performances on microgrid control has been studied and evaluated in the proposed simulator.

Mao, Rukun [ORNL] [ORNL; Xu, Yan [ORNL] [ORNL; Li, Huijuan [ORNL] [ORNL; Li, Husheng [ORNL] [ORNL

2013-01-01T23:59:59.000Z

104

A motor-generator and supercapacitor based system for microgrid frequency stabilization.  

E-Print Network (OSTI)

??This research introduces an energy storage system to deliver microgrid frequency response. A doubly-fed induction generator (DFIG) and a squirrel cage induction machine (SCIM) are (more)

Crispo, Richard F.

2013-01-01T23:59:59.000Z

105

Novel Approach for Calculation and Analysis of Eigenvalues and Eigenvectors in Microgrids: Preprint  

SciTech Connect

This paper proposes a novel approach based on matrix perturbation theory to calculate and analyze eigenvalues and eigenvectors in a microgrid system. Rigorous theoretical analysis to solve eigenvalues and the corresponding eigenvectors for a system under various perturbations caused by fluctuations of irradiance, wind speed, or loads is presented. A computational flowchart is proposed for the unified solution of eigenvalues and eigenvectors in microgrids, and the effectiveness of the matrix perturbation-based approach in microgrids is verified by numerical examples on a typical low-voltage microgrid network.

Li, Y.; Gao, W.; Muljadi, E.; Jiang, J.

2014-02-01T23:59:59.000Z

106

The Role of Microgrids in Helping to Advance the Nations Energy System  

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

Microgrids, which are localized grids that can disconnect from the traditional grid to operate autonomously and help mitigate grid disturbances to strengthen grid resilience, can play an important...

107

Energy Department Launches Microgrid Competition to Support Resiliency in Communities Across America  

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

WASHINGTON Today, the Energy Department launched the Microgrid 2014 MVP Challenge, a competition to support resiliency and adaptation in communities across America.

108

Presentation to the EAC - Microgrids and DoD Facilities - Jeffrey...  

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

security and simple DR Ex. Dahlgren, Ft. Detrick, Tinker 8 Microgrid Path Degree of grid integration Degree of technical complexity Island mode operation Grid-tied operation...

109

Equipment Plan of a Compound Interconnection Micro-grid Composed of Diesel Power Plants and a Fuel Cell  

Science Journals Connector (OSTI)

Installation of the fuel cell micro-grid in an urban area is the technology ... Generally, as for the introduction of a micro-grid in a city area, the following points ... fuel cell by connecting PEM-FC to a micro-grid

2009-01-01T23:59:59.000Z

110

Micro-Grids for Colonias (TX)  

SciTech Connect

This report describes the results of the final implementation and testing of a hybrid micro-grid system designed for off-grid applications in underserved Colonias along the Texas/Mexico border. The project is a federally funded follow-on to a project funded by the Texas State Energy Conservation Office in 2007 that developed and demonstrated initial prototype hybrid generation systems consisting of a proprietary energy storage technology, high efficiency charging and inverting systems, photovoltaic cells, a wind turbine, and bio-diesel generators. This combination of technologies provided continuous power to dwellings that are not grid connected, with a significant savings in fuel by allowing power generation at highly efficient operating conditions. The objective of this project was to complete development of the prototype systems and to finalize and engineering design; to install and operate the systems in the intended environment, and to evaluate the technical and economic effectiveness of the systems. The objectives of this project were met. This report documents the final design that was achieved and includes the engineering design documents for the system. The system operated as designed, with the system availability limited by maintenance requirements of the diesel gensets. Overall, the system achieved a 96% availability over the operation of the three deployed systems. Capital costs of the systems were dependent upon both the size of the generation system and the scope of the distribution grid, but, in this instance, the systems averaged $0.72/kWh delivered. This cost would decrease significantly as utilization of the system increased. The system with the highest utilization achieved a capitol cost amortized value of $0.34/kWh produced. The average amortized fuel and maintenance cost was $0.48/kWh which was dependent upon the amount of maintenance required by the diesel generator. Economically, the system is difficult to justify as an alternative to grid power. However, the operational costs are reasonable if grid power is unavailable, e.g. in a remote area or in a disaster recovery situation. In fact, avoided fuel costs for the smaller of the systems in use during this project would have a payback of the capital costs of that system in 2.3 years, far short of the effective system life.

Dean Schneider; Michael Martin; Renee Berry; Charles Moyer

2012-07-31T23:59:59.000Z

111

Demo Abstract: Toward Data-driven Demand-Response Optimization in a Campus Microgrid  

E-Print Network (OSTI)

Demo Abstract: Toward Data-driven Demand-Response Optimization in a Campus Microgrid Yogesh Simmhan-driven demand response optimization (DR) in the USC campus microgrid, as part of the Los An- geles Smart Grid of this project is to investigate techniques for demand-response optimization (DR) ­ cur- tailing the electricity

Prasanna, Viktor K.

112

Complementary Effect of Wind and Solar Energy Sources in a Microgrid  

E-Print Network (OSTI)

Complementary Effect of Wind and Solar Energy Sources in a Microgrid M. A. Barik, Student Member. Index Terms--Microgrid, renewable energy sources, reactive power mismatch, solar integration, voltage-mass energy, etc. Of them wind and solar energy is broadly used for their characteristics. This paper presents

Pota, Himanshu Roy

113

Demand Side Management for Wind Power Integration in Microgrid Using Dynamic Potential Game Theory  

E-Print Network (OSTI)

Demand Side Management for Wind Power Integration in Microgrid Using Dynamic Potential Game Theory the intermittency in wind power generation. Our focus is on an isolated microgrid with one wind turbine, one fast, Wind Power Integration, Markov Chain, Dynamic Potential Game Theory, Nash Equilibrium. I. INTRODUCTION

Huang, Jianwei

114

A Secure Energy Routing Mechanism for Sharing Renewable Energy in Smart Microgrid  

E-Print Network (OSTI)

A Secure Energy Routing Mechanism for Sharing Renewable Energy in Smart Microgrid Ting Zhu Sheng, Binghamton, NY, USA Abstract--Due to volatile and rising energy prices, smart microgrids appear and wind turbines on every house sharing renewable energy among houses. How to efficiently and optimally

Massachusetts at Amherst, University of

115

DECENTRALIZED VOLTAGE CONTROL TO MINIMIZE DISTRIBUTION LOSSES IN AN ISLANDED MICROGRID  

E-Print Network (OSTI)

power sources and energy storage systems such as batteries requires new power and voltage control-time voltage control algorithm that minimizes power losses for a microgrid supported by inverter based Microgrids can bring electricity power to rural communities or isolated military forward operation bases

Peng, Huei

116

Introduction to Distributed Generation and the CERTS Microgrid  

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

Introduction to Distributed Generation and the CERTS Microgrid Introduction to Distributed Generation and the CERTS Microgrid Speaker(s): Chris Marnay Date: December 3, 2002 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Kristina LaCommare This is a first in a series of at least 5 seminars around the winter break to survey Distributed Energy Resources (DER) research questions and various Berkeley capabilities available to address them. The electricity industry in industrialized countries may be about to reverse a century long trend towards ever larger scale, ever more centrally controlled power systems. The emergence of technologies that are competitive at small scales, close to loads, in large part because of the opportunities created to capture waste heat and locally control power quality might signal a radical

117

Microgrids in the Evolving Electricity Generation and DeliveryInfrastructure  

SciTech Connect

The legacy paradigm for electricity service in most of the electrified world today is based on the centralized generation-transmission-distribution infrastructure that evolved under a regulated environment. More recently, a quest for effective economic investments, responsive markets, and sensitivity to the availability of resources, has led to various degrees of deregulation and unbundling of services. In this context, a new paradigm is emerging wherein electricity generation is intimately embedded with the load in microgrids. Development and decay of the familiar macrogrid is discussed. Three salient features of microgrids are examined to suggest that cohabitation of micro and macro grids is desirable, and that overall energy efficiency can be increased, while power is delivered to loads at appropriate levels of quality.

Marnay, Chris; Venkataramanan, Giri

2006-02-01T23:59:59.000Z

118

Prospects for Microgrids in the Republic of South Africa  

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

Prospects for Microgrids in the Republic of South Africa Prospects for Microgrids in the Republic of South Africa Speaker(s): S.P. Chowdhury Sunetra Chowdhury Date: October 12, 2011 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Chris Marnay The South African utility Eskom is the main key player for the energy business in South Africa. Eskom owns the electricity networks and most of the electricity generation, transmission and distribution leading to monopolistic energy market in the country. The South African economy is quite strong in the African Continent and the energy demand has been growing very fast in the country. Most of the current energy mix is coming from coal fired thermal power stations in addition with a small fraction from nuclear as well as open cycle gas turbine and a bit of hydro power.

119

Performance of the Sendai Microgrid During the 2011 Earthquake and Tsunami  

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

Performance of the Sendai Microgrid During the 2011 Earthquake and Tsunami Performance of the Sendai Microgrid During the 2011 Earthquake and Tsunami Speaker(s): Keiichi Hirose Date: March 23, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Chris Marnay This seminar provides an overview of the Sendai Microgrid, and outlines its behavior during the earthquake and its aftermath. On March 11, 2011, an earthquake of unprecedented violence occurred in the Tohoku region, along Japan's Pacific Coast. The extremely intense vibrations severely damaged electric utility facilities, and the subsequent tsunami washed away many coastal towns and villages. The Sendai Microgrid at Tohoku Fukushi University, located northwest of downtown Sendai, had been built and demonstrated over the four years beginning in 2005. The Microgrid was

120

Microgrid Reliability Modeling and Battery Scheduling Using Stochastic  

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

Reliability Modeling and Battery Scheduling Using Stochastic Reliability Modeling and Battery Scheduling Using Stochastic Linear Programming Title Microgrid Reliability Modeling and Battery Scheduling Using Stochastic Linear Programming Publication Type Journal Article Refereed Designation Refereed LBNL Report Number LBNL-6309E Year of Publication 2013 Authors Cardoso, Gonçalo, Michael Stadler, Afzal S. Siddiqui, Chris Marnay, Nicholas DeForest, Ana Barbosa-Póvoa, and Paulo Ferrão Journal Journal of Electric Power Systems Research Volume 103 Pagination 61-69 Date Published 06/2013 Abstract This paper describes the introduction of stochastic linear programming into Operations DER-CAM, a tool used to obtain optimal operating schedules for a given microgrid under local economic and environmental conditions. This application follows previous work on optimal scheduling of a lithium-iron-phosphate battery given the output uncertainty of a 1 MW molten carbonate fuel cell. Both are in the Santa Rita Jail microgrid, located in Dublin, California. This fuel cell has proven unreliable, partially justifying the consideration of storage options. Several stochastic DER-CAM runs are executed to compare different scenarios to values obtained by a deterministic approach. Results indicate that using a stochastic approach provides a conservative yet more lucrative battery schedule. Lower expected energy bills result, given fuel cell outages, in potential savings exceeding 6%.

Note: This page contains sample records for the topic "modified microgrid concept" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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121

A Green Prison: The Santa Rita Jail Campus Microgrid  

SciTech Connect

A large microgrid project is nearing completion at Alameda Countys twenty-two-year-old 45 ha 4,000-inmate Santa Rita Jail, about 70 km east of San Francisco. Often described as a green prison, it has a considerable installed base of distributed energy resources (DER) including an eight-year old 1.2 MW PV array, a five-year old 1 MW fuel cell with heat recovery, and considerable efficiency investments. A current US$14 M expansion adds a 2 MW-4 MWh Li-ion battery, a static disconnect switch, and various controls upgrades. During grid blackouts, or when conditions favor it, the Jail can now disconnect from the grid and operate as an island, using the on-site resources described together with its back-up diesel generators. In other words, the Santa Rita Jail is a true microgrid, or ?grid, because it fills both requirements, i.e. it is a locally controlled system, and it can operate both grid connected and islanded. The batterys electronics includes Consortium for Electric Reliability Technology (CERTS) Microgrid technology. This enables the battery to maintain energy balance using droops without need for a fast control system.

Marnay, Chris; DeForest, Nicholas; Lai, Judy

2012-01-22T23:59:59.000Z

122

2012 SG Peer Review - CERTS Microgrid Test Bed - Joe Eto, LBNL  

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

Peer Peer Review Meeting Peer Review Meeting The CERTS Microgrid Test Bed g Joe Eto Lawrence Berkeley National Laboratory 7 June 2012 The CERTS Microgrid Test Bed Objective To lower the cost and improve the performance of clusters of smaller distributed energy resources and loads when operated in an integrated manner when operated in an integrated manner, i.e., as microgrids Life-cycle Funding Summary ($K) Prior to FY12, FY13, Out-year(s) Technical Scope The CERTS Microgrid Test Bed is being expanded through the addition of new hardware elements: 1) a CERTS- compatible conventional synchronous generator ; 2) an FY 12 , authorized , requested y ( ) 2500K 1000K 1000K 2500K energy management system relying on software as a service (SaaS) for dispatch; 3) a commercially available, stand-alone

123

2012 SG Peer Review - Smart Inverter Controls and Microgrid Interoperation at DECC - Tom Rizy, ORNL  

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

g g Peer Review Meeting Smart Inverter Controls & Microgrid Interoperation at the Distributed Energy Communications & Controls (DECC) Lab ( ) D. Tom Rizy Oak Ridge National Laboratory (ORNL) June 7 th 2012 June 7 th , 2012 Smart Inverter (SI) Controls and Microgrid (MG) Interoperation Microgrid (MG) Interoperation Objectives * D l d SI l f l i l DECC Microgrid * Develop and test SI controls for multiple renewable/nonrenewable DER. * Develop MG controls and communication requirements for high penetration DER. * I l t MG t DECC L b Technical Scope * Implement MG at DECC Lab. * Transfer technology to industry. Life-cycle Funding Summary ($K) Prior to FY12 FY13 Out- Technical Scope * Develop advanced smart inverter control consisting of local droop (P-f, Q-V) control integrated with secondary closed

124

Toward data-driven demand-response optimization in a campus microgrid  

Science Journals Connector (OSTI)

We describe and demonstrate a prototype software architecture to support data-driven demand response optimization (DR) in the USC campus microgrid, as part of the Los Angeles Smart Grid Demonstration Project. The architecture includes a semantic ...

Yogesh Simmhan; Viktor Prasanna; Saima Aman; Sreedhar Natarajan; Wei Yin; Qunzhi Zhou

2011-11-01T23:59:59.000Z

125

A Framework for the Evaluation of the Cost and Benefits of Microgrids  

E-Print Network (OSTI)

tax on microgrid combined heat and power adoption," Journalas well as power (Combined Heat and PowerCHP) [4]. It hasand by providing Combined Heat and Power (CHP) [9],[16].

Morris, Greg Young

2012-01-01T23:59:59.000Z

126

Micro-grid operation of inverter based distributed generation with voltage and frequency dependent loads  

E-Print Network (OSTI)

Distribution systems are experiencing increasing penetration of distributed generation (DG). One attractive option is to use the available DG capacity during utility outages by forming planned micro-grids. Load sharing ...

Zeineldin, H. H.

127

Micro-grid energy dispatch optimization and predictive control algorithms; A UC Irvine case study  

Science Journals Connector (OSTI)

Abstract Distributed power and energy resources are now being used to meet the combined electric power, heating, and cooling demands of many buildings. The addition of on-site renewables and their accompanying intermittency and non-coincidence requires even greater dynamic performance from the distributed power and energy system. Load following generators, energy storage devices, and predictive energy management are increasingly important to achieve the simultaneous goals of increased efficiency, reduced emissions, and sustainable economics. This paper presents two optimization strategies for the dispatch of a multi-chiller cooling plant with cold-water thermal storage. The optimizations aim to reduce both costs and emissions while considering real operational constraints of a plant. The UC Irvine campus micro-grid operation between January 2009 and December 2013 serves as a case study for how improved utilization of energy storage can buffer demand transients, reduce costs and improve plant efficiency. A predictive control strategy which forecasts campus demands from weather predictions, optimizes the plant dispatch, and applies feedback control to modify the plant dispatch in real-time is compared to best-practices manual operation. The dispatch optimization and predictive control algorithms are shown to reduce annual utility bill costs by 12.0%, net energy costs by 3.61%, and improve energy efficiency by 1.56%.

Dustin McLarty; Carles Civit Sabate; Jack Brouwer; Faryar Jabbari

2015-01-01T23:59:59.000Z

128

Photovoltaic micro-grid in a remote village in India: Survey based identification of socio-economic and other characteristics affecting connectivity with micro-grid  

Science Journals Connector (OSTI)

Abstract Load prediction is an essential component of the planning process of decentralized electricity supply systems based on micro-grids. However, accurate demand forecasting is a challenging task particularly for rural electrification projects. In this paper, actual operational data of a PV based micro-grid system in Sagar Island of India are analyzed in order to understand the role of different factors affecting households' connectivity, their electricity consumption and potential demands, thereby proposing an approach for planning (and designing) a micro-grid based decentralized electricity supply system. The analysis shows that potential demands for electricity within (as well as outside of) the current reach of the micro-grid are high and future expansion of the system would be effective by taking a 'phased approach of rural electrification. The analysis also shows that households with certain socio-economic characteristics have higher probability for connecting with the micro-grid and the relationship can be used to predict additional load requirements in case of grid extensions. Few recommendations for enhancing the connectivity further are also included in the discussion section of the paper.

Toru Kobayakawa; Tara C. Kandpal

2014-01-01T23:59:59.000Z

129

To grate a liquid into tiny droplets by its impact on a hydrophobic micro-grid F. Lapierre, F. Zoueshtiagh, V. Thomy, and A. Merlen  

E-Print Network (OSTI)

To grate a liquid into tiny droplets by its impact on a hydrophobic micro-grid P. Brunet, F (Dated: November 30, 2009) We report on experiments of drop impacting a hydrophobic micro-grid

Brunet, Philippe

130

Lana'ai Hawaii: An Inside Look at the World's Most Advanced Renewable Energy MicroGrid  

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

This is a 47-slide presentation on the performance and operation of the microgrid on the island of Lanai with multi-megawatt solar PV generation.

131

The Added Economic and Environmental Value of Solar Thermal Systems in Microgrids with Combined Heat and Power  

E-Print Network (OSTI)

Environmental Value of Solar Thermal Systems in MicrogridsEnvironmental Value of Solar Thermal Systems in Microgridsa) ABSTRACT The addition of solar thermal and heat storage

Marnay, Chris

2010-01-01T23:59:59.000Z

132

Energy storage sizing for improved power supply availability during extreme events of a microgrid with renewable energy sources.  

E-Print Network (OSTI)

??A new Markov chain based energy storage model to evaluate the power supply availability of microgrids with renewable energy generation for critical loads is proposed. (more)

Song, Junseok

2012-01-01T23:59:59.000Z

133

Optimization of micro-grid system using MOPSO  

Science Journals Connector (OSTI)

Abstract Access to a reliable source of electricity is a basic need for any community as it can improve the living standards characterized via the improvement of healthcare, education, and the local economy at large. There are two key factors to consider when assessing the appropriateness of a micro-grid system, the cost-effectiveness of the system and the quality of service. The tradeoff between cost and reliability of the system is a major compromise in designing hybrid systems. In this way, optimization of a Hybrid Micro-Grid System (HMGS) is investigated. A hybrid wind/PV system with battery storage and diesel generator is used for this purpose. The power management algorithm is applied to the load, and the Multi-Objective Particle Swarm Optimization (MOPSO) method is used to find the best configuration of the system and for sizing the components. A set of recent hourly wind speed data from three meteorological stations in Iran, namely: Nahavand, Rafsanjan, and Khash, are selected and tested for the optimization of HMGS. Despite design complexity of the aforementioned systems, the results show that the MOPSO optimization model produces appropriate sizing of the components for each location. It is also suggested that the use of HMGS can be considered as a good alternative to promote electrification projects and enhance energy access within remote Iranian areas or other developing countries enjoying the same or similar climatic conditions.

Hanieh Borhanazad; Saad Mekhilef; Velappa Gounder Ganapathy; Mostafa Modiri-Delshad; Ali Mirtaheri

2014-01-01T23:59:59.000Z

134

Design and Performance of Solar Decathlon 2011 High-Penetration Microgrid: Preprint  

SciTech Connect

The U.S. Department of Energy Solar Decathlon challenges collegiate teams to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and attractive. The Solar Decathlon 2011 was held in Washington, D.C., from September 23 to October 2, 2011 . A high-penetration microgrid was designed, installed, and operated for the Solar Decathlon 2011 to grid-connect 19 highly energy-efficient, solar-powered competition houses to a single utility connection point. The capacity penetration of this microgrid (defined as maximum PV generation divided by maximum system load over a two-week period) was 74% based on 1-minute averaged data. Temporary, ground-laid conductors and electrical distribution equipment were installed to grid-connect the Solar Decathlon village, which included the houses as well as other electrical loads used by the event organizers. While 16 of the houses were connected to the 60 Hz microgrid, three houses from Belgium, China, and New Zealand were supplied with 50 Hz power. The design of the microgrid, including the connection of the houses powered by 50 Hz and a standby diesel generator, is discussed in this paper. In addition to the utility-supplied net energy meters at each house, a microgrid monitoring system was installed to measure and record energy consumption and PV energy production at 1-second intervals at each house. Bidirectional electronic voltage regulators were installed for groups of competition houses, which held the service voltage at each house to acceptable levels. The design and successful performance of this high-penetration microgrid is presented from the house, microgrid operator, and utility perspectives.

Stafford, B.; Coddington, M.; Butt, R.; Solomon, S.; Wiegand, G.; Wagner, C.; Gonzalez, B.

2012-04-01T23:59:59.000Z

135

Microsoft PowerPoint - DOD Microgrid 102513 SHORT.pptx  

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

Success Stories in DOE's Success Stories in DOE's ARRA Smart Grid Program Steve Bossart, Senior Energy Analyst Smart Grids & Microgrids for Government & Military Symposium October 24-25, 2013, Arlington, VA ‹#› Topics * OE ARRA Smart Grid Program * OE ARRA Smart Grid Progress * Case Studies/Success Stories * Life After ARRA Smart Grid ‹#› DOE OE ARRA Smart Grid Program ‹#› American Recovery and Reinvestment Act ($4.5B) * Smart Grid Investment Grants (99 projects) - $3.4 billion Federal; $4.7 billion private sector - > 800 PMUs covering almost 100% of transmission - ~ 8000 distribution automation circuits - > 15 million smart meters * Smart Grid Demonstration Projects (32 projects) - $685 million Federal; $1 billion private sector - 16 storage projects - 16 regional demonstrations

136

Microgrid Design, Development and Demonstration - Final Report for Phase I and Phase II  

SciTech Connect

This document constitutes GEs final report for the Microgrid Design, Development and Demonstration program for DOEs Office of Electricity Delivery and Energy Reliability, Award DE-FC02-05CH11349. It contains the final report for Phase I in Appendix I, and the results the work performed in Phase II. The program goal was to develop and demonstrate a Microgrid Energy Management (MEM) framework for a broad set of Microgrid applications that provides unified controls, protection, and energy management. This project contributed to the achievement of the U.S. Department of Energys Renewable and Distributed Systems Integration Program goals by developing a fully automated power delivery microgrid network that: - Reduces carbon emissions and emissions of other air pollutants through increased use of optimally dispatched renewable energy, - Increases asset use through integration of distributed systems, - Enhances reliability, security, and resiliency from microgrid applications in critical infrastructure protection, constrained areas of the electric grid, etc. - Improves system efficiency with on-site, distributed generation and improved economic efficiency through demand-side management.

Sumit Bose; Michael Krok

2011-02-08T23:59:59.000Z

137

An analytical literature review of the available techniques for the protection of micro-grids  

Science Journals Connector (OSTI)

Abstract During the last decade, besides the rapid increase in the penetration level of Distributed Generation (DG) units of micro-grids, the connection of micro-grids as a developed technology to the existing distribution networks has also attracted much attention. One of the major challenges associated with the protection of micro-grids is to devise a proper protection strategy that is effective in the grid-connected as well as the islanded mode of operation. In order to deal with the challenge, many researchers have recently proposed various techniques. The purpose of the current study is to provide a comprehensive review of the available protection techniques that are applied to address micro-grid protection issues in both grid-connected and islanded mode. The most up to date relevant options are described and categorized into specific clusters. A comparative analysis is carried out in which the advantages and disadvantages to each technique are assessed. Lastly, after the appraisement of the existing protection techniques, some conclusions and suggestions are put forward for the protection of micro-grids in the future.

Sohrab Mirsaeidi; Dalila Mat Said; Mohd. Wazir Mustafa; Mohd. Hafiz Habibuddin; Kimia Ghaffari

2014-01-01T23:59:59.000Z

138

Design of Micro-grid System Based on Renewable Power Generation Units  

E-Print Network (OSTI)

Abstract- Micro-grid system is currently a conceptual solution to fulfill the commitment of reliable power delivery for future power systems. Renewable power sources such as wind and hydro offer the best potential for emission free power for future micro-grid systems. This paper presents a micro-grid system based on wind and hydro power sources and addresses issues related to operation, control, and stability of the system. The micro-grid system investigated in this paper represents a case study in Newfoundland, Canada. It consists of a small hydro generation unit and a wind farm that contains nine variable- speed, double-fed induction generator based wind turbines. Using Matlab/Simulink, the system is modeled and simulated to identify the technical issues involved in the operation of a micro-grid system based on renewable power generation units. The operational modes, technical challenges and a brief outline of conceptual approaches to addressing some of the technical issues are presented for further investigation.

Dr. K. Ravich; M. Manasa; Mr. P. Yohan Babu; G. V. P. Anjaneyulu

139

Micro-Grids for Colonias (OE 14.09) Kick-Off Meeting  

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

Micro-Grids for Colonias Micro-Grids for Colonias A Technology Development/Transfer Project Presentation to the DOE 2010 Smart Grid Peer Review Dean Schneider, Ph.D., PE Texas Center for Applied Technology Texas Engineering Experiment Station The Texas A&M University System d-schneider@tamu.edu The Problem * They call it "Luz Verde" - Colonias: Communities along the US - Mexico border lacking one or more essential services: water, wastewater, or electricity - Usually illegally subdivided - Small to large acreages - Low socioeconomic opportunities The Problem * Texas Model Subdivision Rules are in place to prevent additional Colonia development * Many residents economically cannot meet requirement in the near term A Solution * Install temporary micro-grid systems designed to provide essential levels of

140

Stability analysis and reactive power compensation issue in a microgrid with a DFIG based WECS  

Science Journals Connector (OSTI)

Abstract This paper presents a novel methodology for compensating reactive power in a microgrid, having a DFIG based winddiesel system, to enhance the voltage stability of the hybrid system. UPFC as a FACTS device is proposed in order to improve the control of reactive power mismatch and the stability of the system. A small signal model of the winddiesel system, DFIG based wind turbine system, UPFC and the controllers are designed for the stability analysis. Further, the voltage variation and reactive power compensation is analysed with the incorporation of proposed ANFIS based UPFC controller. Simulations are performed in MATLAB environment for transient stability analysis in a winddiesel based microgrid with different wind power input and 2% step increase in load demand. Simulation results illustrate the efficiency and effectiveness of the proposed approach and its impact upon transient behaviour of the microgrid.

Asit Mohanty; Meera Viswavandya; Prakash K. Ray; Sandipan Patra

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Regional protection scheme designed for low-voltage micro-grids  

Science Journals Connector (OSTI)

Abstract No selective protection exists in the low-voltage level micro-grid integrated with DG presently. To deal with this problem, a new type of micro-grid protection scheme based on fault component is put forward. To implement this scheme, the micro-grid is divided into several regions, and each region is regarded as the target of protection. As a result, not only the scope of outage is decreased in accordance with the action of the protection, but the economic requirement of protection arrangement is met. Taking the negative sequence component as the basic characteristic quantity, a variety of asymmetric faults effectively can be identified successfully. Considering the adverse effects of unbalanced load and the switching of large capacity single phase load, a low-voltage supplement criterion is introduced. The effectiveness of this protection scheme is verified with EMTDC based simulation tests.

Xiangning Lin; Rui Zhang; Ning Tong; Xianshan Li; Ming Li; Dexian Yang

2015-01-01T23:59:59.000Z

142

August 22 ESTAP Webinar: A Solar Storage Microgrid for the Energy City of the Future  

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

On Friday, August 22, 2014 from 1 - 2 p.m. ET, Clean Energy State Alliance will host a webinar to discuss a project to build a solar plus storage microgrid located in Rutland, Vermont. OE is partnering with the State of Vermont Public Service, Green Mountain Power, and Dynapower on a resilience microgrid that will combine 2.5 MW of solar generation with 4MW of energy storage. Webinar speakers include OE's Imre Gyuk, Energy Storage Program Manager. The event is free but registration is required.

143

Smart microgrid operational planning considering multiple demand response programs  

Science Journals Connector (OSTI)

Microgrid (MG) is one of the important blocks in the future smart distribution systems. The scheduling pattern of MGs affects distribution system operation. Also the optimal scheduling of MGs will result in reliable and economical operation of distribution system. In this paper an operational planning model of a MG which considers multiple demand response programs is proposed. In the proposed approach all types of loads can participate in demand response programs which will be considered in either energy or reserve scheduling. Also the renewable distributed generation uncertainty is covered by reserve provided by both Distributed Generations (DGs) and responsive loads. The novelty of this paper is the demand side participation in energy and reserve scheduling simultaneously. Furthermore the energy and reserve scheduling is proposed for day-ahead and real-time. The proposed model was tested on a typical MG system and the results show that running demand response programs will reduce total operation cost of MG and cause more efficient use of resources.

Alireza Zakariazadeh; Shahram Jadid

2014-01-01T23:59:59.000Z

144

Self-triggered Communication Enabled Control of Distributed Generation in Microgrids  

E-Print Network (OSTI)

Tahir Member, IEEE Dept. of Elect. Eng. and Al-Khwarizmi Institute of Comp. Science University. System reliability for secondary control in microgrids can be improved by using a distributed cooperative control approach. For realizing the cooperative control of multiple DGs in smart-grid, a multi-agent based

Mazumder, Sudip K.

145

On Using Complex Event Processing for Dynamic Demand Response Optimization in Microgrid  

E-Print Network (OSTI)

On Using Complex Event Processing for Dynamic Demand Response Optimization in Microgrid Qunzhi Zhou is a key benefit of Smart Grids. However, existing demand response optimization (DR) programs fail. Demand response optimization (DR) is a cornerstone com- ponent of Smart Grids, and deals with managing

Prasanna, Viktor K.

146

Cost versus reliability sizing strategy for isolated photovoltaic micro-grids in the developing world  

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Abstract For many isolated regions in the developing world micro-grids which combine photovoltaic electricity generation and battery storage may represent the most reliable and least expensive form of energy service. Due to climate induced solar resource variations, achieving high reliability levels necessitates excess generation and storage capacity which can significantly increase the end consumer cost of energy. Due to severe financial limitations, many consumers in the developing world may prefer cost versus reliability trade-offs, as long as their basic energy needs are met. Defining reliability as the percent of electricity demand a grid can deliver, we utilize a time series energy balance algorithm at hourly resolution to create cost versus reliability curves of micro-grid performance. We then propose a micro-grid sizing strategy which enables designers with knowledge of local energy needs to determine the acceptability of potential micro-grids. Our strategy relies on visualizing simulation data at increasing levels of temporal resolution to determine where energy shortfalls occur and if they interfere with high priority energy demand. A case study is presented which utilizes the proposed methods. Results suggest that the methodology has the potential to reduce the cost of service while maintaining acceptable consumer reliability.

Mitchell Lee; Daniel Soto; Vijay Modi

2014-01-01T23:59:59.000Z

147

Renewable generation and demand response integration in micro-grids: development of a new energy management and control system  

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The aim of this research resides in the development of an energy management and control system to control a micro-grid based on the use of renewable generation and demand resources to introduce the application of...

Carlos lvarez-Bel; Guillermo Escriv-Escriv; Manuel Alczar-Ortega

2013-11-01T23:59:59.000Z

148

Microgrid dynamic response during the pre-planned and forced islanding processes involving DFIG and synchronous generators  

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Abstract In this article, some important issues associated to the dynamic response of a microgrid system are addressed. In particular, issues related to the pre-planned islanding mode of operation, load shedding, loss of one generator and the failure to shed an unforeseen connected load are studied. In this context, the dynamic behavior results of a Doubly-Fed Induction Generator (DFIG) and two other synchronous sources (a diesel and a small hydro-generator) within a microgrid, are presented. The overloading condition can occur due to causes ranging from poor load schedule, inadequate switching of circuits within the microgrid, illegal connection of load by some low voltage consumers, etc. In most of the simulated conditions the microgrid generators resumed their operation after clearing the disturbance. However, under some critical conditions, like in the case of a considerably large load connected, the microgrid was unable to return to the pre-fault condition and even failed while trying to gain stability for this new load condition. Because microgrid systems normally have low equivalent inertia, it was also observed that very little to practically no overload can be accepted by the generators.

Ricardo Leon Vasquez-Arnez; Dorel Soares Ramos; Tesoro Elena Del Carpio-Huayllas

2014-01-01T23:59:59.000Z

149

Decentralized demandsupply matching using community microgrids and consumer demand response: A scenario analysis  

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Abstract Developing countries constantly face the challenge of reliably matching electricity supply to increasing consumer demand. The traditional policy decisions of increasing supply and reducing demand centrally, by building new power plants and/or load shedding, have been insufficient. Locally installed microgrids along with consumer demand response can be suitable decentralized options to augment the centralized grid based systems and plug the demandsupply gap. The objectives of this paper are to: (1) develop a framework to identify the appropriate decentralized energy options for demandsupply matching within a community, and, (2) determine which of these options can suitably plug the existing demandsupply gap at varying levels of grid unavailability. A scenario analysis framework is developed to identify and assess the impact of different decentralized energy options at a community level and demonstrated for a typical urban residential community Vijayanagar, Bangalore in India. A combination of LPG based CHP microgrid and proactive demand response by the community is the appropriate option that enables the Vijayanagar community to meet its energy needs 24/7 in a reliable, cost-effective manner. The paper concludes with an enumeration of the barriers and feasible strategies for the implementation of community microgrids in India based on stakeholder inputs.

Kumudhini Ravindra; Parameshwar P. Iyer

2014-01-01T23:59:59.000Z

150

Power management of hybrid micro-grid system by a generic centralized supervisory control scheme  

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Abstract This paper presents a generic centralized supervisory control scheme for the power management of multiple power converters based hybrid micro-grid system. The system consists of wind generators, photovoltaic system, multiple parallel connected power converters, utility grid, ac and dc loads. Power management of the micro-grid is performed under two cases: grid mode and local mode. Central supervisory unit (CSU) generates command signal to ensure the power management during the two modes. In local mode, the dc loads in the acdc hybrid system can be controlled. In the case of grid mode operation, power flow between the utility grid and micro-grid is controlled. A novel feature of this paper is the incorporation of the multiple power converters. The generated command signal from the CSU can also control the operation of the multiple power converters in both grid and local modes. An additional feature is the incorporation of sodium sulfur battery energy storage system (NAS BESS) which is used to smooth the output power fluctuation of the wind farm. The effectiveness of the control scheme is also verified using real time load pattern. The simulation is performed in PSCAD/EMTDC.

Mir Nahidul Ambia; Ahmed Al-Durra; Cedric Caruana; S.M. Muyeen

2014-01-01T23:59:59.000Z

151

Vehicle to Micro-Grid: Leveraging Existing Assets for Reliable Energy Management (Poster), NREL (National Renewable Energy Laboratory)  

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to Micro-Grid: Leveraging Existing Assets for Reliable Energy Management to Micro-Grid: Leveraging Existing Assets for Reliable Energy Management Mike Simpson, Tony Markel, and Michael O'Keefe National Renewable Energy Laboratory INTRODUCTION OPPORTUNITY National Renewable Energy Laboratory Presented at the 4th International Conference on Integration of Renewable & Distributed Energy Resources, December 6-10 , 2010 * Albuquerque, New Mexico U.S. military bases, such as Fort Carson, are interested in opportunities to lower energy consumption and use renewable resources. l Electricity GCV Micro-Grid The Smith Electric Newton all-electric truck Fort Carson Photovoltaic Installation NREL PIX 17631 NREL PIX # 17394 Natural Gas Renewable Energy Truck Fleet Diesel Generators

152

The performance of a grid-tied microgrid with hydrogen storage and a hydrogen fuel cell stack  

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Abstract In a heat-power system, the use of distributed energy generation and storage not only improves systems efficiency and reliability but also reduce the emission. This paper is focused on the comprehensive performance evaluation of a grid-tied microgrid, which consists of a PV system, a hydrogen fuel cell stack, a PEM electrolyzer, and a hydrogen tank. Electricity and heat are generated in this system, to meet the local electric and heat demands. The surplus electricity can be stored as hydrogen, which is supplied to the fuel cell stack to generate heat and power as needed. The performance of the microgrid is comprehensively evaluated and is compared with another microgrid without a fuel cell stack. As a result, the emission and the service quality in the first system are higher than those in the second one. But they both have the same overall performance.

Linfeng Zhang; Jing Xiang

2014-01-01T23:59:59.000Z

153

Figure 1. Depiction of the BrainAGE concept. [Image modified from [1], with permission from Hogrefe Publishing, Bern.] (A) The model of healthy brain aging is trained with the chronological age and preprocessed structural MRI data of a training sample (le  

E-Print Network (OSTI)

Figure 1. Depiction of the BrainAGE concept. [Image modified from [1], with permission from Hogrefe Publishing, Bern.] (A) The model of healthy brain aging is trained with the chronological age important voxel locations that were used by the age regression model). Subsequently, the individual brain

Gaser, Christian

154

To grate a liquid into tiny droplets by its impact on a hydrophobic micro-grid  

E-Print Network (OSTI)

We report on experiments of drop impacting a hydrophobic micro-grid, of typical spacing a few tens of $\\mu$m. Above a threshold in impact speed, liquid emerges to the other side, forming micro-droplets of size about that of the grid holes. We propose a method to produce either a mono-disperse spray or a single tiny droplet of volume as small as a few picoliters corresponding to a volume division of the liquid drop by a factor of up to 10$^5$. We also discuss the discrepancy of the measured thresholds with that predicted by a balance between inertia and capillarity.

Brunet, P; Zoueshtiagh, F; Thomy, V; Merlen, A

2009-01-01T23:59:59.000Z

155

Integrated offering strategy for profit enhancement of distributed resources and demand response in microgrids considering system uncertainties  

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Abstract Due to the uncertain nature and limited predictability of wind and PV generated power, these resources participating in most of electricity markets are subject to significant deviation penalties during market settlements. In order to balance the unpredicted wind and PV power variations, system operators need to schedule additional reserves. This paper presents the optimal integrated participation model of wind and PV energy including demand response, storage devices, and dispatchable distributed generations in microgrids or virtual microgrids to increase their revenues in the intra-market. This market is considered 37h before the delivered time, so that the amount of the contracted energy could be updated to reduce the produced power deviation of microgrid. A stochastic programming approach is considered in the development of the proposed bidding strategies for microgrid producers and loads. The optimization model is characterized by making the analysis of several scenarios and simultaneously treating three kinds of uncertainty including wind and PV power, intra-market, and imbalance prices. In order to predict these uncertainty variables, a neuro-fuzzy based approach has been applied. Historic data are used to forecast future prices and wind and PV power production in the adjustment markets. Also, a probabilistic approach based on the error of forecasted and real historic data is considered for estimating the future IM and imbalance prices of wind and PV produced power. Further, a test case is applied to example the microgrid using the Spanish market rules during one week, month, and year period to illustrate the potential benefits of the proposed joint biding strategy. The simulations results, carried out by MATLAB/optimization toolbox.

H. Shayeghi; B. Sobhani

2014-01-01T23:59:59.000Z

156

The impact of large-scale distributed generation on power grid and microgrids  

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Abstract With the widespread application of distributed generation (DG), their utilization rate is increasingly higher and higher in the power system. This paper analyzes the static and transient impact of large-scale \\{DGs\\} integrated with the distribution network load models on the power grid. Studies of static voltage stability based on continuous power flow method have shown that a reasonable choice of DG's power grid position will help to improve the stability of the system. The transient simulation results show that these induction motors in the distribution network would make effect on the start-up and fault conditions, which may cause the instability of \\{DGs\\} and grid. The simulation results show that modeling of distributed generations and loads can help in-depth study of the microgrid stability and protection design.

Qian Ai; Xiaohong Wang; Xing He

2014-01-01T23:59:59.000Z

157

Optimal energy management of a micro-grid with renewable energy resources and demand response  

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With the introduction of smart energy grids and extensive penetration of renewable energy resources in distribution networks Micro-Grids (MGs) which are comprised of various alternative energy resources and Advanced Metering Infrastructure (AMI) systems for better implementation of DR programs are effectively employed. The design and development of Smart Energy Management Systems (SEMSs) for MGs are interesting and attractive research problems. In this paper a new SEMS architecture is presented to solve the multi-objective operation management and scheduling problem in a typical MG while considering different energy resource technologies Plug-in Hybrid Electric Vehicles (PHEVs) and DR programs. The energy management problem is formulated as a constrained mixed integer nonlinear multi-objective optimization problem in which the MG's total operating cost and net emissions must be minimized simultaneously. Three different optimization algorithms are used to solve the above mentioned problem and their outputs (Pareto optimal solutions) for the same problem are compared and analyzed.

M. Parvizimosaed; F. Farmani; A. Anvari-Moghaddam

2013-01-01T23:59:59.000Z

158

A Green Prison: The Santa Rita Jail Campus Microgrid Chris Marnay, Nicholas DeForest, and Judy Lai  

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A Green Prison: A Green Prison: The Santa Rita Jail Campus Microgrid Chris Marnay, Nicholas DeForest, and Judy Lai Environmental Energy Technologies Division January 22, 2012 http://eetd.lbl.gov/EA/EMP/emp-pubs.html presented in the Campus Microgrids Panel, 2012 IEEE PES General Meeting 22-26 Jul 2012, San Diego, CA USA This work described in this paper was funded by the Office of Electricity Delivery and Energy Reliability, Distribution System Integration Program of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. It also builds on work previously supported by the Consortium for Electric Reliability Technology Solutions with funding provided by the California Energy Commission, Public Interest Energy Research Program, under Work for Others

159

Three fault ride through controllers for wind systems running in isolated micro-grid and Effects of fault type on their performance: A review and comparative study  

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Abstract This paper presents survey about Fault Ride Through (FRT) techniques and controllers which employed with all wind generation system types. After presenting a comprehensive FRT survey, paper proposes three Fault Ride Through (FRT) controllers for keeping stability of Fixed Speed Wind Generation (FSWG) system serving in isolated Micro-Grid (MG). The first controller has been implemented by inserting Superconductor Fault Current Limiter (SFCL) in series with wind generator terminals during fault instant. The second proposed FRT controller is modifying the conventional Pitch Angle Controllers (PAC) to can spill and reduce high percentage of extracted mechanical wind power during and subsequent fault occurrence which in turns help stability improvement and restoration. Third FRT technique is performed by adapting the wind turbine gearbox ratio which forces the wind generation system to run far from the maximum power point. The best performance is obtained with the SFCL controller. Superior results are obtained when the three proposed FRT controllers are employed simultaneously. The three developed FRT controllers are simple, reliable and economical attractive. Effects of fault type on SFCL FRT controller performance are analyzed and investigated in details. The proposed SFCL FRT controller has been tested under single phase, double phase, phase to phase, and three phases to ground faults. Results display that the three phases to ground fault is the most severe type on SFCL FRT performance from stability point of view. On the other hand, double phase to ground fault is the most severe one from fluctuations and oscillations points of view. Parameters of the SFCL must be adjusted based on the three phases to ground fault. If the SFCL FRT controller is designed to can deal with three phases fault, it sure can deal with the other fault types successfully.

Rashad M. Kamel

2014-01-01T23:59:59.000Z

160

Bulk Power System Dynamics and Control -VII, August 19-24, 2007, Charleston, South Carolina, USA Dynamics of a Microgrid Supplied by Solid Oxide Fuel Cells1  

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. The results of an example in which two SOFC plants provide power to a microgrid are presented. The simulation1 Bulk Power System Dynamics and Control - VII, August 19-24, 2007, Charleston, South Carolina, USA, but is not concerned with the thermal dynamics. A DC-DC boost converter interfaces the SOFC stack to a DC bus, where

Hiskens, Ian A.

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161

This document is a preprint version of the final paper: M. Soshinskaya, W. H. J. Graus, J. M. Guerrero, and J. C. Vasquez, "Microgrids: experiences, barriers and success factors," Renewable and Sustainable Energy Reviews, 2014 Elsevier.  

E-Print Network (OSTI)

and Sustainable Energy Reviews, 2014 ­ Elsevier. Microgrids: experiences, barriers and success factors Mariya of Sustainable Development, Utrecht University, The Netherlands b Department of Energy Technology, Aalborg; Renewable Energy; Islanding; Distributed Generation; Energy Storage; Barriers Acronyms greenhouse gas (GHG

Vasquez, Juan Carlos

162

A new approach for optimal sizing of battery energy storage system for primary frequency control of islanded Microgrid  

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Abstract This paper presents a method for determining optimal size of a battery energy storage system (BESS) for primary frequency control of a Microgrid. A Microgrid is assumed to be portion of a low voltage distribution feeder including sources such as microturbine, diesel generator, fuel cell and photovoltaic system with slow response for frequency control. A BESS due to its very fast dynamic response can play an important role in restoring balance between supply and demand. In this paper, overloading capacity of the BESS is employed for fast handling of the primary frequency control of a MG. To achieve this purpose, by considering overloading characteristics and limitations of the state of charge (SOC) of battery, a control scheme of dc/ac converter for the BESS is developed. Based on this scheme, overloading capacity of the BESS and its permissible duration for participating in primary frequency control is determined. Simulation studies are carried out using PSCAD/EMTDC software package to evaluate the performance of the proposed control scheme.

Mohammad Reza Aghamohammadi; Hajar Abdolahinia

2014-01-01T23:59:59.000Z

163

Regenerative air energy storage for remote winddiesel micro-grid communities  

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Abstract Remote communities beyond the reach of conventional electricity grids primarily rely on diesel generators (DG) to supply electricity. The systems in these communities are costly to operate because of the high price of transporting diesel to remote areas, and the low overall efficiencies caused by part-load operation of the DG. There is increasing interest to use wind energy converters (WEC) to supplement DG, thereby lowering the fuel consumption and operating costs. In order to use WEC to reduce the economic and environmental burden that DG have on remote communities, an energy storage system can be incorporated to buffer both generation and demand. This can avoid curtailment of the WEC, operate the DG at optimal efficiency, and reduce the necessary maximum installed generator capacities. Regenerative air energy storage (RAES) is a form of compressed air storage that is suitable for deployment in remote communities due to its ability to utilize waste heat from DG to boost the roundtrip efficiency of energy storage. This article presents a numerical model for a RAES system operating in a wind-diesel micro-grid. Simulations are run for varying WEC penetration levels and RAES energy capacities. The results show that in systems with WEC penetration less than 75%, increasing WEC capacity is more economic than adding a RAES system. Above penetration rates of 75%, the use of RAES achieves increased diesel savings with only slightly longer payback than simple wind-diesel systems. In the remote Canadian community case study, the optimal RAES system is 0.5MW and 1MWh with a WEC penetration rate of approximately 75%. A larger RAES results in further fuel savings, and thus environmental benefit, with only marginal increase in simple payback period.

Sebastian C. Manchester; Lukas G. Swan; Dominic Groulx

2014-01-01T23:59:59.000Z

164

Off-grid Solar PV Power for Humanitarian Action: From Emergency Communications to Refugee Camp Micro-grids  

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Abstract The need for new innovative technologies to support humanitarian action is evident today. Efficient and economic technologies properly deployed and integrated should mitigate some of the potential negative social effects of poor refugee camp infrastructure engineering. The body of the paper identifies off-grid solar Photovoltaic (PV) and solar PV hybrid packaged systems that are applicable to emergency relief activities, refugee camp activities and micro-grid development. The paper's concentration on off-grid power, the description of these engineered systems by humanitarian activity and the identification of the different engineered packaged solutions is aimed at stimulating a discussion to help scale more appropriate technologies for humanitarian action. The paper concludes with a discussion of present and future private sector business strategies to support scalability of this new and growing market.

Joseph Franceschi; Jaron Rothkop; Gabriel Miller

2014-01-01T23:59:59.000Z

165

An optimized co-ordinated approach for harmonic minimization of Doubly Fed Induction Generator connected micro-grid system  

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Abstract This paper illustrates the biogeography based optimization (BBO) based selected harmonic elimination technique for \\{DFIGs\\} connected to a micro-grid. The lower order harmonics are individually eliminated in each DFIG outputs but the higher order harmonics are eliminated in such a way that the harmonics generated by one source is eliminated by the other after generating the same order of harmonics in opposite phase. The switching angles are computed off-line and stored in microcontroller memory in the form of look-up tables for on line application. The excitation power for the inverters is obtained from a photovoltaic (PV) panel. Proper simulations are executed for the proposed theory and subsequently supported by investigational verifications. Both the simulation and experiments agree well with the analytical formulation. The total harmonic distortion (THD) in the output is found to be within the stipulated limit.

Krishna Sarker; Debashis Chatterjee; S.K. Goswami

2015-01-01T23:59:59.000Z

166

A stochastic programming approach for optimal microgrid economic operation under uncertainty using 2m?+?1 point estimate method  

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By increasing concern over climate change and the security of energy supplies wind power and photovoltaic are emerging as important sources of electrical energy throughout the world. The wind speed at a given location is continuously varying. There are changes in the annual mean wind speed from year to year (annual) changes with season (seasonal) with passing weather systems (synoptic) on a daily basis (diurnal) and from second to second (turbulence). Common sense tells us that irradiation varies regionally with the changing seasons and hourly with the daily variation of the sun's evaluation. This paper proposes a new method for optimal management of MicroGrids under uncertain environments. In this study the 2m?+?1 point estimate method is used to model the uncertainty in the load demands the market prices and the electric power generation of the wind farms and the photovoltaic systems. The Weibull Beta and normal distributions are used to handle the uncertain input variables in this study. Moreover a Self-Adaptive Bee Swarm Optimization algorithm is presented to achieve an optimal-operational planning with regard to the cost minimization. In the proposed framework four different moving patterns are suggested in order to make an adaptive and robust optimization algorithm for different problems with different fitness landscape. In the devised method each bee self-adaptively chooses one of the proposed moving patterns according to a probability model to update its position. The proposed probability model is based on the ability of each strategy to generate more optimal solutions in the past generations. The efficiency of the method is validated on a typical microgrid.

2013-01-01T23:59:59.000Z

167

An optimization model for regional micro-grid system management based on hybrid inexact stochastic-fuzzy chance-constrained programming  

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Abstract Micro-grid system management considering air pollutant control and carbon dioxide (CO2) mitigation is a challenging task, since many system parameters such as electric demand, resource availability, system cost as well as their interrelationships may appear uncertain. To reflect these uncertainties, effective inexact system-analysis methods are desired. In this study, a hybrid inexact stochastic-fuzzy chance-constrained programming (ITSFCCP) was developed for micro-grid system planning, and interval-parameter programming (IPP), two-stage stochastic programming (TSP) and fuzzy credibility constrained programming (FCCP) methods were integrated into a general framework to manage pollutants and CO2 emissions under uncertainties presented as interval values, fuzzy possibilistic and stochastic probabilities. Moreover, FCCP allowed satisfaction of system constraints at specified confidence level, leading to model solutions with the lowest system cost under acceptable risk magnitudes. The developed model was applied to a case of micro-grid system over a 24-h optimization horizon with a real time and dynamic air pollutant control, and total amount control for CO2 emission. Optimal generation dispatch strategies were derived under different assumptions for risk preferences and emission reduction goals. The obtained results indicated that stable intervals for the objective function and decision variables could be generated, which were useful for helping decision makers identify the desired electric power generation patterns, and CO2 emission reduction under complex uncertainties, and gain in-depth insights into the trade-offs between system economy and reliability.

L. Ji; D.X. Niu; M. Xu; G.H. Huang

2015-01-01T23:59:59.000Z

168

A Quasi-Feed-In-Tariff policy formulation in micro-grids: A bi-level multi-period approach  

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Abstract A Quasi-Feed-In-Tariff (QFIT) policy formulation is presented for micro-grids that integrates renewable energy generation considering Policy Makers? and Generation Companies? (GENCOs) objectives assuming a bi-level multi-period formulation that integrates physical characteristics of the power-grid. The upper-level problem corresponds to the PM, whereas the lower-level decisions are made by GENCOs. We consider that some \\{GENCOs\\} are green energy producers, while others are black energy producers. Policy makers incentivize green energy producers to generate energy through the payment of optimal time-varying subsidy price. The policy maker?s main objective is to maximize an overall social welfare that includes factors such as demand surplus, energy cost, renewable energy subsidy price, and environmental standards. The lower-level problem corresponding to the \\{GENCOs\\} is based on maximizing the players? profits. The proposed QFIT policy differs from the FIT policy in the sense that the subsidy price-based contracts offered to green energy producers dynamically change over time, depending on the physical properties of the grid, demand, and energy price fluctuations. The integrated problem solves for time-varying subsidy price and equilibrium energy quantities that optimize the system welfare under different grid and system conditions.

Ahmad F. Taha; Nadim A. Hachem; Jitesh H. Panchal

2014-01-01T23:59:59.000Z

169

Battery energy storage system for frequency support in microgrids and with enhanced control features for uninterruptible supply of local loads  

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Abstract This paper proposes a battery energy storage system (BESS) to support the frequency control process within microgrids (MG) with high penetration of renewable energy sources (RES). The solution includes features that enhance the systems stability and security of supply. The BESS can operate connected to MG or islanded and the transition between the two states is seamlessly coordinated by an original method. The BESS active power response is governed by an improved frequency controller on two layers, namely primary and secondary. It responds to frequency deviations by combining a conventional droop control method with a virtual inertia function to improve the systems stability. The proposed BESS may also compensate the power of the local loads, so that the MG frequency transients can be reduced and, depending on the remaining inverter capacity, voltage support in the point of common coupling with the MG may be provided. If the MG power quality degrades in terms of the voltage and frequency, the BESS and the local load are disconnected from the MG and continue operating islanded. The BESS is reconnected to the MG after a smoothly resynchronization of the local voltage with the MG, without disturbing the local loads supply. Simulation and experimental results assesses the proposed control solutions.

I. Serban; C. Marinescu

2014-01-01T23:59:59.000Z

170

Effect of wind generation system types on Micro-Grid (MG) fault performance during both standalone and grid connected modes  

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Abstract Recently, there are three wind generation (WG) system types. The first type is called Fixed Speed Wind Generation (FSWG) system, which employs squirrel cage induction generators. Double Fed Induction Generator (DFIG) is utilized in the second type. The third type is called Full Converter Wind Generation (FCWG) system, which is interfaced with Micro-Grid (MG) through a back to back converter. During fault occurrence, each WG has its performance and characteristics which are determined by the generator physical characteristics and the MG earthing system configuration. For some WG types, the fault current depends also on the control algorithm of the power converter. The main target of this paper is to investigate and estimate how the fault performance of MG during both standalone and grid-connected modes is influenced by the type of WG. It is found during standalone mode that the type of the employed WG has a dominant impact on the MG performance under fault disturbance. On the contrary, the type of the employed WG has a negligible effect on the MG fault performance during grid-connected mode. This is because the main grid contributes most of the fault current. Effects of earthing system type on MG performance are highlighted.

Rashad M. Kamel

2014-01-01T23:59:59.000Z

171

Building sustainable energy systems: Homeostatic control of grid-connected microgrids, as a means to reconcile power supply and energy demand response management  

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Abstract The issue of worldwide over consumption and squandering of electrical energy has resulted in what one might call an energy obesity problem in terms of energy intake and its expenditure. It is indeed something that must change if modern society is to become sustainable someday. This is to be realized in conjunction with adequate government policies and innovative strategies aimed at effectively integrating non-conventional renewable energies (NCRE), with thriftiness and energy efficiency (EE) the three pillars of energy sustainability (ES) in today?s electric power systems generation and distribution infrastructure. This ought to be done in a way that incorporates them jointly, as part of a comprehensive energy strategy to propitiate a wider penetration of distributed generation (DG) solutions. Departing from mainstream literature on the subject, this paper proposes such strategies for integrating hybrid micro-generation power systems to the grid through homeostatic control (HC), as a means to reconcile power supply and energy demand response management (EDRM). These strategies can be designed and implemented in the microgrid?s supervisory control system for the purpose of eliciting EE and thriftiness in consumers to build ES in the system. The theoretical model behind the HC strategies is presented and a numerical example is provided, using real electricity consumption data of a small rural community in Chile. Upon examining a particular set of criteria designed to control renewable power (RP) supply from a grid-tie microgrid to residential consumers, simulation results show that the model proves effective when testing such criteria for different power supply scenarios. Particularly revealing is the role of the energy storage system (ESS) the energy buffer in the HC strategies being proposed and the difference that it makes in eliciting thrifty, efficient energy consumption as a result of individual and collective efforts to ensure energy sustainability of the system as a whole.

Franco Fernando Yanine; Federico I. Caballero; Enzo E. Sauma; Felisa M. Crdova

2014-01-01T23:59:59.000Z

172

Stochastic scenario-based model and investigating size of battery energy storage and thermal energy storage for micro-grid  

Science Journals Connector (OSTI)

Abstract Energy storage systems (ESS) are designed to accumulate energy when production exceeds demand and to make it available at the users request. They can help match energy supply and demand, exploit the variable production of renewable energy sources (e.g. solar and wind), increase the overall efficiency of the energy system and reduce CO2 emissions. This paper presents a unit commitment formulation for micro-grid that includes a significant number of grid parallel PEM-Fuel Cell Power Plants (PEM-FCPPs) with ramping rate and minimum up and down time constraints. The aim of this problem is to determine the optimum size of energy storage devices like hydrogen, thermal energy and battery energy storages in order to schedule the committed units output power while satisfying practical constraints and electrical/thermal load demand over one day with 15min time step. In order to best use of multiple PEM-FCPPs, hydrogen storage management is carried out. Also, since the electrical and heat load demand are not synchronized, it could be useful to store the extra heat of PEM-FCPPs in the peak electrical load in order to satisfy delayed heat demands. Due to uncertainty nature of electrical/thermal load, photovoltaic and wind turbine output power and market price, a two-stage scenario-based stochastic programming model, where the first stage prescribes the here-and-now variables and the second stage determines the optima value of wait-and-see variables under cost minimization. Quantitative results show the usefulness and viability of the suggested approach.

Sirus Mohammadi; Ali Mohammadi

2014-01-01T23:59:59.000Z

173

revision:20090902 modified:20090903  

E-Print Network (OSTI)

871 revision:2009­09­02 modified:2009­09­03 A trichotomy of countable, stable, unsuperstable and DMS 0600940 and Israel Science Foundation Grant no. 242/03. Publica­ tion 871. 1 #12; 871 revision of formulas (see Definition 2.3). The origins of these 2 #12; 871 revision:2009­09­02 modified:2009

Shelah, Saharon

174

Severe traumatic brain injury management and clinical outcome using the Lund concept  

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Abstract This review covers the main principles of the Lund concept for treatment of severe traumatic brain injury. This is followed by a description of results of clinical studies in which this therapy or a modified version of the therapy has been used. Unlike other guidelines, which are based on meta-analytical approaches, important components of the Lund concept are based on physiological mechanisms for regulation of brain volume and brain perfusion and to reduce transcapillary plasma leakage and the need for plasma volume expanders. There have been nine non-randomized and two randomized outcome studies with the Lund concept or modified versions of the concept. The non-randomized studies indicated that the Lund concept is beneficial for outcome. The two randomized studies were small but showed better outcome in the groups of patients treated according to the modified principles of the Lund concept than in the groups given a more conventional treatment.

L.-O.D. Koskinen; M. Olivecrona; P.O. Grnde

2014-01-01T23:59:59.000Z

175

Effect of Heat and Electricity Storage and Reliability on Microgrid Viability: A Study of Commercial Buildings in California and New York States  

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

1334E-2009 1334E-2009 Effect of Heat and Electricity Storage and Reliability on Microgrid Viability: A Study of Commercial Buildings in California and New York States Michael Stadler, Chris Marnay, Afzal Siddiqui, Judy Lai, Brian Coffey, and Hirohisa Aki Environmental Energy Technologies Division Revised March 2009 http://eetd.lbl.gov/EA/EMP/emp-pubs.html The work described in this paper was funded by the Office of Electricity Delivery and Energy Reliability, Renewable and Distributed Systems Integration Program in the U.S. Department of Energy under Contract No. DE-AC02- 05CH11231. ERNEST ORLANDO LAWRENCE BERKELEY NATIONAL LABORATORY Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct

176

Integration of renewable energy in microgrids coordinated with demand response resources: Economic evaluation of a biomass gasification plant by Homer Simulator  

Science Journals Connector (OSTI)

Abstract This paper deals with how demand response can contribute to the better integration of renewable energy resources such as wind power, solar, small hydro, biomass and CHP. In particular, an economic evaluation performed by means of the micro-power optimization model HOMER Energy has been done, considering a micro-grid supplied by a biomass gasification power plant, operating isolated to the grid and in comparison with other generation technologies. Different scenarios have been simulated considering variations in the power production of the gasified biomass generator and different solutions to guarantee the balance generation/consumption are analyzed, demonstrating as using demand response resources is much more profitable than producing this energy by other conventional technologies by using fossil fuels.

Lina Montuori; Manuel Alczar-Ortega; Carlos lvarez-Bel; Alex Domijan

2014-01-01T23:59:59.000Z

177

Validated SCR Concept Development  

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

Validated SCR Concept Development 2007 DEER Conference, Detroit, MI Dr. Michael Traver, IAV Inc James Ireton, IAV Inc Dr. Lutz Krmer, IAV GmbH Jrgen Manns, IAV GmbH Poster...

178

Common tester platform concept.  

SciTech Connect

This report summarizes the results of a case study on the doctrine of a common tester platform, a concept of a standardized platform that can be applicable across the broad spectrum of testing requirements throughout the various stages of a weapons program, as well as across the various weapons programs. The common tester concept strives to define an affordable, next-generation design that will meet testing requirements with the flexibility to grow and expand; supporting the initial development stages of a weapons program through to the final production and surveillance stages. This report discusses a concept investing key leveraging technologies and operational concepts combined with prototype tester-development experiences and practical lessons learned gleaned from past weapons programs.

Hurst, Michael James

2008-05-01T23:59:59.000Z

179

Biodiversity Concepts and  

E-Print Network (OSTI)

Biodiversity Concepts and Measures Dr. Stacy Philpott Conservation Biology EEES 4750/5750/7750 #12;Biodiversity · What is biodiversity? · How much biodiversity is there? · Where is biodiversity found? · How do we measure biodiversity? · How do we collect and analyze biodiversity data? #12;Biodiversity · What

Gottgens, Hans

180

Concept of Operations: Essence  

SciTech Connect

This concept of operations is designed to give the reader a brief overview of the National Rural Electric Cooperative Associations Essence project and a description of the Essence device design. The data collected by the device, how the data are used, and how the data are protected are also discussed in this document.

Hutton, William J.

2014-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

revision:19960317 modified:19960317  

E-Print Network (OSTI)

restrict our­ self to certain concrete classes then we may be able to retain compactness. In this paper we375 revision:1996­03­17 modified:1996­03­17 Some Compact Logics ­ Results in ZFC Alan H. Mekler order logic is so strong that it fails to have nice model theoretic properties such as compactness

Shelah, Saharon

182

Separations innovative concepts: Project summary  

SciTech Connect

This project summary includes the results of 10 innovations that were funded under the US Department's Innovative Concept Programs. The concepts address innovations that can substantially reduce the energy used in industrial separations. Each paper describes the proposed concept, and discusses the concept's potential energy savings, market applications, technical feasibility, prior work and state of the art, and future development needs.

Lee, V.E. (ed.)

1988-05-01T23:59:59.000Z

183

Protein folding: concepts and perspectives  

Science Journals Connector (OSTI)

...In this review, the main concepts of protein folding, as deduced from both theoretical and experimental...

J. M. Yon

1997-07-01T23:59:59.000Z

184

Generation -IV Reactor Concepts  

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

Generation-IV Reactor Concepts Generation-IV Reactor Concepts Thomas H. Fanning Argonne National Laboratory 9700 South Cass Avenue Argonne, Illinois 60439, USA The Generation-IV International Forum (GIF) is a multi-national research and development (R&D) collaboration. The GIF pursues the development of advanced, next generation reactor technology with goals to improve: a) sustainability (effective fuel utilization and minimization of waste) b) economics (competitiveness with respect to other energy sources) c) safety and reliability (e.g., no need for offsite emergency response), and d) proliferation resistance and physical protection The GIF Technology Roadmap exercise selected six generic systems for further study: the Gas- cooled Fast Reactor (GFR), the Lead-cooled Fast Reactor (LFR), the Molten Salt Reactor (MSR),

185

Modified Faraday cup  

DOE Patents (OSTI)

A tomographic technique for measuring the current density distribution in electron beams using electron beam profile data acquired from a modified Faraday cup to create an image of the current density in high and low power beams is disclosed. The modified Faraday cup includes a narrow slit and is rotated by a stepper motor and can be moved in the x, y and z directions. The beam is swept across the slit perpendicular thereto and controlled by deflection coils, and the slit rotated such that waveforms are taken every few degrees from 0{degree} to 360{degree} and the waveforms are recorded by a digitizing storage oscilloscope. Two-dimensional and three-dimensional images of the current density distribution in the beam can be reconstructed by computer tomography from this information, providing quantitative information about the beam focus and alignment. 12 figs.

Elmer, J.W.; Teruya, A.T.; O`Brien, D.W.

1996-09-10T23:59:59.000Z

186

Modified Faraday cup  

DOE Patents (OSTI)

A tomographic technique for measuring the current density distribution in electron beams using electron beam profile data acquired from a modified Faraday cup to create an image of the current density in high and low power beams. The modified Faraday cup includes a narrow slit and is rotated by a stepper motor and can be moved in the x, y and z directions. The beam is swept across the slit perpendicular thereto and controlled by deflection coils, and the slit rotated such that waveforms are taken every few degrees form 0.degree. to 360.degree. and the waveforms are recorded by a digitizing storage oscilloscope. Two-din-tensional and three-dimensional images of the current density distribution in the beam can be reconstructed by computer tomography from this information, providing quantitative information about the beam focus and alignment.

Elmer, John W. (Pleasanton, CA); Teruya, Alan T. (Livermore, CA); O'Brien, Dennis W. (Livermore, CA)

1996-01-01T23:59:59.000Z

187

Viscosity in modified gravity  

E-Print Network (OSTI)

A bulk viscosity is introduced in the formalism of modified gravity. It is shown that, on the basis of a natural scaling law for the viscosity, a simple solution can be found for quantities such as the Hubble parameter and the energy density. These solutions may incorporate a viscosity-induced Big Rip singularity. By introducing a phase transition in the cosmic fluid, the future singularity can nevertheless in principle be avoided.

Iver Brevik

2012-11-12T23:59:59.000Z

188

Modified entropic force  

SciTech Connect

The theory of statistical thermodynamics tells us the equipartition law of energy does not hold in the limit of very low temperatures. It is found the Debye model is very successful in explaining the experimental results for most of the solid objects. Motivated by this fact, we modify the entropic force formula which is proposed very recently. Since the Unruh temperature is proportional to the strength of the gravitational field, so the modified entropic force formula is an extension of the Newtonian gravity to the weak field. On the contrary, general relativity extends Newtonian gravity to the strong field case. Corresponding to Debye temperature, there exists a Debye acceleration g{sub D}. It is found the Debye acceleration is g{sub D}=10{sup -15} N kg{sup -1}. This acceleration is very much smaller than the gravitational acceleration 10{sup -4} N kg{sup -1} which is felt by Neptune and the gravitational acceleration 10{sup -10} N kg{sup -1} felt by the Sun. Therefore, the modified entropic force can be very well approximated by the Newtonian gravity in the Solar System and in the Galaxy. With this Debye acceleration, we find the current cosmic speeding up can be explained without invoking any kind of dark energy.

Gao Changjun [National Astronomical Observatories, Chinese Academy of Sciences, Key Laboratory of Optical Astronomy, NAOC, CAS, Beijing, 100012 and Kavli Institute for Theoretical Physics China, CAS, Beijing 100190 (China)

2010-04-15T23:59:59.000Z

189

Sandia National Laboratories: Microgrid  

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

Their report will focus on system ... ECIS-Princeton Power Systems, Inc.: Demand Response Inverter On March 19, 2013, in DETL, Distribution Grid Integration,...

190

Sandia National Laboratories: Microgrid  

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

in successfully testing an application that can also be used for the civilian power grid. This demonstration and deployment work is consistent with the energy ... Mesa del...

191

Building Scale DC Microgrids  

E-Print Network (OSTI)

Efficiency and Renewable Energy, Building TechnologiesEfficiency and Renewable Energy, Building Technologies

Marnay, Chris

2013-01-01T23:59:59.000Z

192

Model selection for modified gravity  

Science Journals Connector (OSTI)

...the potential discovery space for modified...scales where dark energy dominates...attributed to a dark energy. However...significant discovery space that...the potential discovery space for modified...scales where dark energy dominates...

2011-01-01T23:59:59.000Z

193

Securities trading of concepts (STOC)  

E-Print Network (OSTI)

Identifying winning new product concepts can be a challenging process that requires insight into private consumer preferences. To measure consumer preferences for new product concepts, the authors apply a securities trading ...

Dahan, Ely

194

Advanced Concepts Breakout Group  

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

Workshop Workshop Advanced Concepts Working Group Facilitator: John J. Petrovic Scribe: Sherry Marin Advanced Storage Techniques/ Approaches in Priority Order 1. Crystalline Nanoporous Materials (15) 2. Polymer Microspheres (12) Self-Assembled Nanocomposites (12) 3. Advanced Hydrides (11) Metals - Organic (11) 4. BN Nanotubes (5) Hydrogenated Amorphous Carbon (5) 5. Mesoporous materials (4) Bulk Amorphous Materials (BAMs) (4) 6. Iron Hydrolysis (3) 7. Nanosize powders (2) 8. Metallic Hydrogen (1) Hydride Alcoholysis (1) Overarching R&D Questions for All Advanced Materials * Maximum storage capacity - theoretical model * Energy balance / life cycle analysis * Hydrogen absorption / desorption kinetics * Preliminary cost analysis - potential for low cost, high

195

Employing two novel mechanical fault ride through controllers for keeping stability of fixed speed wind generation systems hosted by standalone micro-grid  

Science Journals Connector (OSTI)

Abstract This paper proposes and designs two novels Fault Ride Through (FRT) controllers for maintaining Fixed Speed Wind Generation system (FSWGs) stability during fault events. The first technique has been implemented by increasing the wind turbine blade pitch angle with maximum possible rate to reduce the mechanical extracted wind power and consequently suppress wind generation system acceleration. The second FRT technique has been verified by adapting gear ratio of wind generation system to run far from optimum maximum power point and help FRT process. Effectiveness of the two proposed FRT techniques has been proven by accurate simulation of the most severe disturbance conditions. Also, Results indicated that second technique gives faster response than the first one. Without employing any FRT technique, \\{FSWGs\\} cannot keep its stability and the standalone Micro-Grid (MG) transfers to the blackout mode. Implementation the two FRT techniques requires no additional hardware. Only, control algorithms need little modification to deal with fault event and help FRT process. This fact makes the two proposed FRT techniques are simple, practical and highly economical attractive.

Rashad M. Kamel

2014-01-01T23:59:59.000Z

196

Modified clay sorbents  

DOE Patents (OSTI)

A novel modified clay sorbent and method of treating industrial effluents to remove trace pollutants, such as dioxins, biphenyls, and polyaromatics such as benzo(a)pyrene and pentachlorophenol. The novel clay sorbent has a composite structure in which the interlayer space of an expandable clay, such as smectite, is filled with polyvalent or multivalent inorganic cations which forces weaker surfactant cations to locate on the surface of the clay in such an orientation that the resulting composite is hydrophilic in nature. A specific example is cetylpyridinium-hydroxy aluminum-montmorillonite. In certain embodiments, a non-expanding clay, such as kaolinite, is used and surfactant cations are necessarily located on an external surface of the clay. A specific example is cetylpyridinium-kaolinite.

Fogler, H. Scott (Ann Arbor, MI); Srinivasan, Keeran R. (Livonia, MI)

1990-01-01T23:59:59.000Z

197

Polyoxometalate-Graphene Nanocomposite Modified Electrode for...  

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

Polyoxometalate-Graphene Nanocomposite Modified Electrode for Electrocatalytic Detection of Ascorbic Acid. Polyoxometalate-Graphene Nanocomposite Modified Electrode for...

198

Demoing the Modified TALON Robot  

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

A technician at Idaho National Laboratory demonstrates the modified TALON robot; which is being sent to assist emergency workers at Japan's Fukishima nuclear reactor.

199

A Centrality Detector Concept  

E-Print Network (OSTI)

The nucleus-nucleus impact parameter and collision geometry of a heavy ion collision are typically characterized by assigning a collision "centrality". In all present heavy ion experiments centrality is measured indirectly, by detecting the number of particles or the energy of the particles produced in the interactions, typically at high rapidity. Centrality parameters are associated to the measured detector response using the Glauber model. This approach suffers from systematic uncertainties related to the assumptions about the particle production mechanism and limitations of the Glauber model. In the collider based experiments there is a unique possibility to measure centrality parameters by registering spectator fragments remaining from the collision. This approach does not require model assumptions and relies on the fact that spectators and participants are related via the total number of nucleons in the colliding species. This article describes the concept of the centrality detector for heavy ion experiment, which measures the total mass number of all fragments by measuring their deflection in the magnetic field of the collider elements.

Sourav Tarafdar; Zvi Citron; Alexander Milov

2014-06-07T23:59:59.000Z

200

College Students GIS Spatial Concept Knowledge Assessed by Concept Maps  

E-Print Network (OSTI)

Projection ................................................................................................... 93 26 Result of the Kruskal-Wallis Test of a Full Set of Concepts ..................... 95 27 Result of the Kruskal-Wallis Test of a Set... Projection ................................................................................................... 93 26 Result of the Kruskal-Wallis Test of a Full Set of Concepts ..................... 95 27 Result of the Kruskal-Wallis Test of a Set...

Oda, Katsuhiko

2012-07-16T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Modified Theories of Gravity  

E-Print Network (OSTI)

The recent observational data in cosmology seem to indicate that the universe is currently expanding in an accelerated way. An intriguing interpretation of these data is that they may just be signalling that Einstein's General Relativity is not the correct description of gravity when we consider distances of the order of the present horizon of the universe. In this thesis we consider two models which modify General Relativity at very large distances, the Cascading DGP and the dRGT massive gravity, and investigate their phenomenological viability. We start with a general introduction to standard cosmology and we introduce the late time acceleration problem and the cosmological constant problem. We then provide a pedagogical introduction to the DGP model, of which the Cascading DGP is an extension, and to the dRGT massive gravity. Concerning the Cascading DGP, we show that the thin limit of the 4D brane inside the (already thin) 5D brane is well defined, at least for the class of configurations that we consider...

Sbis, Fulvio

2014-01-01T23:59:59.000Z

202

ADVANCED SULFUR CONTROL CONCEPTS  

SciTech Connect

Conventional sulfur removal in integrated gasification combined cycle (IGCC) power plants involves numerous steps: COS (carbonyl sulfide) hydrolysis, amine scrubbing/regeneration, Claus process, and tail-gas treatment. Advanced sulfur removal in IGCC systems involves typically the use of zinc oxide-based sorbents. The sulfides sorbent is regenerated using dilute air to produce a dilute SO{sub 2} (sulfur dioxide) tail gas. Under previous contracts the highly effective first generation Direct Sulfur Recovery Process (DSRP) for catalytic reduction of this SO{sub 2} tail gas to elemental sulfur was developed. This process is currently undergoing field-testing. In this project, advanced concepts were evaluated to reduce the number of unit operations in sulfur removal and recovery. Substantial effort was directed towards developing sorbents that could be directly regenerated to elemental sulfur in an Advanced Hot Gas Process (AHGP). Development of this process has been described in detail in Appendices A-F. RTI began the development of the Single-step Sulfur Recovery Process (SSRP) to eliminate the use of sorbents and multiple reactors in sulfur removal and recovery. This process showed promising preliminary results and thus further process development of AHGP was abandoned in favor of SSRP. The SSRP is a direct Claus process that consists of injecting SO{sub 2} directly into the quenched coal gas from a coal gasifier, and reacting the H{sub 2}S-SO{sub 2} mixture over a selective catalyst to both remove and recover sulfur in a single step. The process is conducted at gasifier pressure and 125 to 160 C. The proposed commercial embodiment of the SSRP involves a liquid phase of molten sulfur with dispersed catalyst in a slurry bubble-column reactor (SBCR).

Apostolos A. Nikolopoulos; Santosh K. Gangwal; William J. McMichael; Jeffrey W. Portzer

2003-01-01T23:59:59.000Z

203

Modified Theories of Gravity  

E-Print Network (OSTI)

The recent observational data in cosmology seem to indicate that the universe is currently expanding in an accelerated way. An intriguing interpretation of these data is that they may just be signalling that Einstein's General Relativity is not the correct description of gravity when we consider distances of the order of the present horizon of the universe. In this thesis we consider two models which modify General Relativity at very large distances, the Cascading DGP and the dRGT massive gravity, and investigate their phenomenological viability. We start with a general introduction to standard cosmology and we introduce the late time acceleration problem and the cosmological constant problem. We then provide a pedagogical introduction to the DGP model, of which the Cascading DGP is an extension, and to the dRGT massive gravity. Concerning the Cascading DGP, we show that the thin limit of the 4D brane inside the (already thin) 5D brane is well defined, at least for the class of configurations that we consider, and confirm that gravity is regularized in these set-ups. We give a geometrical interpretation of the presence of the critical tension, and comment on the difference between the results in the literature and our results, which we support with a numerical calculation. Regarding the dRGT massive gravity, we focus on the branch of solutions in which the Vainshtein mechanism can occur. We determine analytically the number and properties of local solutions which exist asymptotically on large scales (but still below the gravitational Compton wavelength), and of local (inner) solutions which exist on small scales. We characterize exactly the properties of global solutions in every point of the phase space, and characterize precisely in which regions the Vainshtein mechanism takes place. We also provide numerical solutions which confirm our analysis.

Fulvio Sbisa'

2014-07-09T23:59:59.000Z

204

OPERATING SYSTEM CONCEPTS Avi Silberschatz  

E-Print Network (OSTI)

OPERATING SYSTEM CONCEPTS Avi Silberschatz Department of Computer Sciences University of Texas & Peter Galvin CHAPTER 1: INTRODUCTION . What is an operating system? . Early Systems . Simple Batch Systems . Distributed Systems . Real­Time Systems Operating System Concepts, Addison­Wesley ? 1994

Schmidt, Douglas C.

205

2 IEEE TRANSACTIONS ON CIRCUIT THEORY, VOL. CT-16, NO. 1, BBBRUARY 1969 The Modified Circuit Matrix of an &Port  

E-Print Network (OSTI)

of an &Port Network and Its Applications KRISIINAIYAN THULASIRAMRN AND VEMPATI G. I Abstracf-Certain properties of the modified circuit matrix useful in the analysis and synthesis of n-port pseudoseries connection of n-port networks. The use- fulness of the concept of the modified circuit matrix

Thulsiraman, Krishnaiyan

206

Modified coal batch in coking  

Science Journals Connector (OSTI)

The influence of volatile products from low-metamorphic poorly clinkering G coal on plasticmass formation in rammed batch during coking is considered. An experimental batch of modified coke has been produced at P...

A. G. Starovoit; E. I. Malyi; M. S. Chemerinskii; M. A. Starovoit

2013-05-01T23:59:59.000Z

207

Prometheus Hot Leg Piping Concept  

SciTech Connect

The Naval Reactors Prime Contractor Team (NRPCT) recommended the development of a gas cooled reactor directly coupled to a Brayton energy conversion system as the Space Nuclear Power Plant (SNPP) for NASA's Project Prometheus. The section of piping between the reactor outlet and turbine inlet, designated as the hot leg piping, required unique design features to allow the use of a nickel superalloy rather than a refractory metal as the pressure boundary. The NRPCT evaluated a variety of hot leg piping concepts for performance relative to SNPP system parameters, manufacturability, material considerations, and comparison to past high temperature gas reactor (HTGR) practice. Manufacturability challenges and the impact of pressure drop and turbine entrance temperature reduction on cycle efficiency were discriminators between the piping concepts. This paper summarizes the NRPCT hot leg piping evaluation, presents the concept recommended, and summarizes developmental issues for the recommended concept.

Gribik, Anastasia M. [Bechtel Bettis, Inc., Bettis Atomic Power Laboratory, West Mifflin, PA 15122 (United States); DiLorenzo, Peter A. [KAPL, Inc., Knolls Atomic Power Laboratory, Schenectady, NY 12301 (United States)

2007-01-30T23:59:59.000Z

208

Modified Acyl-ACP desaturase  

DOE Patents (OSTI)

Disclosed is a method for modifying the chain length and double bond positional specificities of a soluble plant fatty acid desaturase. More specifically, the method involves modifying amino acid contact residues in the substrate binding channel of the soluble fatty acid desaturase which contact the fatty acid. Specifically disclosed is the modification of an acyl-ACP desaturase. Amino acid contact residues which lie within the substrate binding channel are identified, and subsequently replaced with different residues to effect the modification of activity.

Cahoon, Edgar B. (Shoreham, NY); Shanklin, John (Shoreham, NY); Lindqvist, Ylva (Jarfalla, SE); Schneider, Gunter (Jarfalla, SE)

1999-03-30T23:59:59.000Z

209

Modified acyl-ACP desaturase  

DOE Patents (OSTI)

Disclosed is a methods for modifying the chain length and double bond positional specificities of a soluble plant fatty acid desaturase. More specifically, the method involves modifying amino acid contact residues in the substrate binding channel of the soluble fatty acid desaturase which contact the fatty acid. Specifically disclosed is the modification of an acyl-ACP desaturase. Amino acid contact residues which lie within the substrate binding channel are identified, and subsequently replaced with different residues to effect the modification of activity.

Cahoon, Edgar B. (Shoreham, NY); Shanklin, John (Shoreham, NY); Lindgvist, Ylva (Jarfalla, SE); Schneider, Gunter (Jarfalla, SE)

1998-01-06T23:59:59.000Z

210

Modeling and simulation of electric propulsion concepts for a multimodal prototype demonstrator  

Science Journals Connector (OSTI)

The Office of Naval Research (ONR) is planning a prototype demonstration of a novel craft envisioned to have three modes of operation: Fuel-efficient, good sea keeping mode for open ocean transits High-speed, shallow water mode Amphibious ... Keywords: integrated power systems, microgrids, multimodal propulsion, naval electric power systems

J. Herbst; A. Gattozzi; J. Uglum; J. S. Chalfant; C. Chryssostomidis; J. Langston; M. Steurer; M. Andrus

2009-07-01T23:59:59.000Z

211

DIRECT LIQUEFACTION PROOF-OF-CONCEPT PROGRAM  

SciTech Connect

This report presents the results of the bench-scale work, Bench Run PB-09, HTI Run Number 227-106, conducted under the DOE Proof-of-Concept Option Program indirect coal liquefaction at Hydrocarbon Technologies Inc. in Lawrenceville, New Jersey. Bench Run PB-09 was conducted using two types of Chinese coal, Shenhua No.2 and Shenhua No.3, and had several goals. One goal was to study the liquefaction performance of Shenhua No.2 and Shenhua No.3 with respect to coal conversion and distillate production. Another goal of Bench Run PB-09 was to study the effect of different GelCatw formulations and loadings. At the same time, the space velocity and the temperature of the fmt reactor, K-1, were varied to optimize the liquefaction of the two Chinese coals. The promoter-modified HTI GelCat{trademark} catalyst was very effective in the direct liquefaction of coal with nearly 92% maf coal conversion with Shenhua No.3 and 93% maf coal conversion with 9 Shenhua No.2. Distillate yields (CQ-524 C)varied from 52-68% maf for Shenhua No.3 coal to 54-63% maf for Shenhua No.2 coal. The primary conclusion from Bench Run PB-09 is that Shenhua No.3 coal is superior to Shenhua No.2 coal in direct liquefaction due to its greater distillate production, although coal conversion is slightly lower and C{sub 1}-C{sub 3} light gas production is higher for Shenhua No.3. The new promoter modified GelCat{trademark} proved successful in converting the two 9 Chinese coals and, under some conditions, producing good distillate yields for a coal-only bench run. Run PB-09 demonstrated significantly better performance of China Shenhua coal using HTI's coal direct liquefaction technology and GelCat{trademark} catalyst than that obtained at China Coal Research Institute (CCRI, coal conversion 88% and distillate yield 61%).

A.G. Comolli; T.L.K. Lee; J. Hu; G. Popper; M.D. Elwell; J. Miller; D. Parfitt; P. Zhou

1999-12-30T23:59:59.000Z

212

Modified gravity and the CMB  

Science Journals Connector (OSTI)

We consider the effect of modified gravity on the peak structure of the cosmic microwave background (CMB) spectrum. We focus on simple models of modified gravity mediated by a massive scalar field coupled to both baryons and cold dark matter. This captures the features of chameleon, symmetron, dilaton, and f(R) models. We find that the CMB peaks can be affected in three independent ways provided the Compton radius of the massive scalar is not far-off the sound horizon at last scattering. When the coupling of the massive scalar to cold dark matter is large, the anomalous growth of the cold dark matter perturbation inside the Compton radius induces a change in the peak amplitudes. When the coupling to baryons is moderately large, the speed of sound is modified and the peaks shifted to higher momenta. Finally when both couplings are nonvanishing, a new contribution proportional to the Newton potential appears in the Sachs-Wolfe temperature and increases the peak amplitudes. We also show how, given any temporal evolution of the scalar field mass, one can engineer a corresponding modified gravity model of the chameleon type. This opens up the possibility of having independent constraints on modified gravity from the CMB peaks and large scale structures at low redshifts.

Philippe Brax and Anne-Christine Davis

2012-01-10T23:59:59.000Z

213

Energy Literacy: Essential Principles and Fundamental Concepts...  

Office of Environmental Management (EM)

Energy Literacy: Essential Principles and Fundamental Concepts for Energy Education Energy Literacy: Essential Principles and Fundamental Concepts for Energy Education News and...

214

The European Passive House Concept  

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

The European Passive House Concept The European Passive House Concept Speaker(s): Nabih Tahan Date: January 13, 2009 - 12:00pm Location: 90-3122 Nabih will describe the European Passive House concept and modern, home manufacturing methods in Austria. The Passive House is a European standard for a specific way to build a house that consumes very little energy, is comfortable and has a high indoor air quality. It is a cost effective method of building, where conventional heating systems are eliminated, and their cost is reinvested in super insulation, super air-tightness and heat recovery. Free heat generated from electrical and gas appliances and lighting is recycled through the heat recovery ventilator. This results in buildings that consume 80% to 90% less heating energy while constantly

215

Energy Concepts | Open Energy Information  

Open Energy Info (EERE)

Concepts Concepts Facility Energy Concepts Sector Wind energy Facility Type Small Scale Wind Facility Status In Service Location Hudson WI Coordinates 44.942933°, -92.701608° 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":44.942933,"lon":-92.701608,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

216

Modified acyl-ACP desaturase  

DOE Patents (OSTI)

Disclosed is a method for modifying the chain length and double bond positional specificities of a soluble plant fatty acid desaturase. More specifically, the method involves modifying amino acid contact residues in the substrate binding channel of the soluble fatty acid desaturase which contact the fatty acid. Specifically disclosed is the modification of an acyl-ACP desaturase. Amino acid contact residues which lie within the substrate binding channel are identified, and subsequently replaced with different residues to effect the modification of activity. 1 fig.

Cahoon, E.B.; Shanklin, J.; Lindgvist, Y.; Schneider, G.

1998-01-06T23:59:59.000Z

217

1 - Mobile Robots: General Concepts  

Science Journals Connector (OSTI)

This chapter presents the fundamental general concepts of mobile robots that can move from one place to another autonomously within a predefined workspace to achieve their desired goals. Specifically, the chapter (i) provides a list of the main historical landmarks of general robotics and mobile robots, (ii) discusses the locomotion issues of ground (wheeled, legged) mobile robots, (iii) investigates the wheel and drive types of mobile robots (nonholonomic, omnidirectional) and, (iv) introduces the concepts of mobile robot degree of mobility, degree of steerability, and maneuverability.

Spyros G. Tzafestas

2014-01-01T23:59:59.000Z

218

Resonant wave-particle interactions modified by intrinsic Alfvenic turbulence  

SciTech Connect

The concept of wave-particle interactions via resonance is well discussed in plasma physics. This paper shows that intrinsic Alfven waves can qualitatively modify the physics discussed in conventional linear plasma kinetic theories. It turns out that preexisting Alfven waves can affect particle motion along the ambient magnetic field and, moreover, the ensuing force field is periodic in time. As a result, the meaning of the usual Landau and cyclotron resonance conditions becomes questionable. It turns out that this effect leads us to find a new electromagnetic instability. In such a process intrinsic Alfven waves not only modify the unperturbed distribution function but also result in a different type of cyclotron resonance which is affected by the level of turbulence. This instability might enable us to better our understanding of the observed radio emission processes in the solar atmosphere.

Wu, C. S.; Lee, K. H. [Institute of Space Science, National Central University, Zhongli, Taiwan (China); Wang, C. B. [CAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei (China); Wu, D. J. [Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing (China)

2012-08-15T23:59:59.000Z

219

Investigation of Wind Turbine Rotor Concepts for Offshore Wind Farms  

Science Journals Connector (OSTI)

Current plans in offshore wind energy developments call for further reduction of cost of energy. In order to contribute to this goal, several wind turbine rotor concepts have been investigated. Assuming the future offshore wind turbines will operate only in the offshore wind farms, the rotor concepts are not only evaluated for their stand-alone performances and their potential in reducing the loads, but also for their performance in an offshore wind farm. In order to do that, the 10MW reference wind turbine designed in Innwind.EU project is chosen as baseline. Several rotor parameters have been modified and their influences are investigated for offshore wind turbine design purposes. This investigation is carried out as a conceptual parametrical study. All concepts are evaluated numerically with BOT (Blade optimisation tool) software in wind turbine level and with Farmflow software in wind farm level for two wind farm layouts. At the end, all these concepts are compared with each other in terms of their advantages and disadvantages.

zlem Ceyhan; Francesco Grasso

2014-01-01T23:59:59.000Z

220

Model selection for modified gravity  

Science Journals Connector (OSTI)

...achieved with the dark energy survey (DES,-[22...decisively distinguish dark energy from flat DGP-modified...galaxies in the survey. Pan-STARRS...to distinguish a dark energy model will depend...wide-field photometric surveys, using three-dimensional...

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Data Warehousing and Concepts, Methodologies,  

E-Print Network (OSTI)

, and outcomes of the utilization of data mining and warehousing technologies, such as algorithms, concept of the trademark or registered trademark. British Cataloguing in Publication Data A Cataloguing in Publication approach that allows us to build robust and adaptable web sys- tems by using a multi-agent approach

Camacho, David

222

Concept of Employment January 2004  

E-Print Network (OSTI)

US Marine Corps Concept Purpose ­ Depict the enhanced multi-mission capabilities of the Navy V-22;Planned Aircraft Allocation · Marine Corps: 360 Aircraft ·US Special Operations Command: 50 Aircraft #12 Fuel + Air Refueling · Multi-function or Weather Radar · 24 Crashworthy Passenger (troop) Seats · 6'x6

223

Data Mining: Concepts and Techniques  

E-Print Network (OSTI)

1 Data Mining: Concepts and Techniques (3rd ed.) -- Chapter 3 -- Jiawei Han, Micheline Kamber. All rights reserved. #12;2013/08/12 2 #12;33 Chapter 3: Data Preprocessing n Data Preprocessing: An Overview n Data Quality n Major Tasks in Data Preprocessing n Data Cleaning n Data Integration n Data

Geldenhuys, Jaco

224

Concurrent engineering: concept and practice  

Science Journals Connector (OSTI)

Just as quality was the key factor in the 1980's, speed to market through integrated product development is seen as the key to success in the 1990's. The concept of concurrent engineering (CE) has been developed as a practical way in which the new criterion may be met. This article looks at CE in concept and practice, starting with the new product criteria and the CE response. It then goes on to describe the component parts of CE, comprising the Purpose, Process, Technology and Human aspects. The advantages of CE are reviewed together with the key themes. Methods of establishing CE within a company are also discussed. Finally, the implications for the practicing engineer are reviewed.

I. Barclay; J. Poolton

1994-01-01T23:59:59.000Z

225

Bistatic SAR: Proof of Concept.  

SciTech Connect

Typical synthetic aperture RADAR (SAR) imaging employs a co-located RADAR transmitter and receiver. Bistatic SAR imaging separates the transmitter and receiver locations. A bistatic SAR configuration allows for the transmitter and receiver(s) to be in a variety of geometric alignments. Sandia National Laboratories (SNL) / New Mexico proposed the deployment of a ground-based RADAR receiver. This RADAR receiver was coupled with the capability of digitizing and recording the signal collected. SNL proposed the possibility of creating an image of targets the illuminating SAR observes. This document describes the developed hardware, software, bistatic SAR configuration, and its deployment to test the concept of a ground-based bistatic SAR. In the proof-of-concept experiments herein, the RADAR transmitter will be a commercial SAR satellite and the RADAR receiver will be deployed at ground level, observing and capturing RADAR ground/targets illuminated by the satellite system.

Yocky, David A.; Doren, Neall E.; Bacon, Terry A.; Wahl, Daniel E.; Eichel, Paul H.; Jakowatz, Charles V,; Delaplain, Gilbert G.; Dubbert, Dale F.; Tise, Bertice L.; White, Kyle R.

2014-10-01T23:59:59.000Z

226

The Enviro-Port concept  

E-Print Network (OSTI)

THE ENVIRO-PORT CONCEPT NILLIAM CARI f)cNL'TT Submitted to the Graduate Col1ege of Texas A8H University in par tial fulfillment of the requirement for the degree of NASTER QF SCI ENCE August 1977 major Subject: Civil Engineering THE ENV IRO...-PORT CONCEPT A Thesis ! IIt:I LIAf'I CARL [ilcNUTT fk')DPQv'~d Bs to 5 ' "1e 8':ld coA I:BA t. UlkP 3t'Pi, BP, 0t CotRrH t Q (He", iher 8P Cfj The Enviro-Port Complex. (August l977) Mi l liam C. McNutt, B. S. , Texas AEN Uni versi ty Chairman...

McNutt, William Carl

2012-06-07T23:59:59.000Z

227

CIRCULATING MOVING BED COMBUSTION PROOF OF CONCEPT  

SciTech Connect

Circulating Moving Bed (CMB) combustion technology has its roots in traditional circulating fluidized bed technology and involves a novel method of solid fuel combustion and heat transfer. CMB technology represents a step change in improved performance and cost relative to conventional PC and FBC boilers. The CMB heat exchanger preheats the energy cycle working fluid, steam or air, to the high temperature levels required in systems for advanced power generation. Unique features of the CMB are the reduction of the heat transfer surfaces by about 60% as a result of the enhanced heat transfer rates, flexibility of operation, and about 30% lower cost over existing technology. The CMB Phase I project ran from July 2001 through March 2003. Its objective was to continue development of the CMB technology with a series of proof of concept tests. The tests were conducted at a scale that provided design data for scale up to a demonstration plant. These objectives were met by conducting a series of experiments in ALSTOM Powers Multi-use Test Facility (MTF). The MTF was modified to operate under CMB conditions of commercial interest. The objective of the tests were to evaluate gas-to-solids heat transfer in the upper furnace, assess agglomeration in the high temperature CMB bubbling bed, and evaluate solids-to-tube heat transfer in the moving bed heat exchanger. The Phase I program results showed that there are still some significant technical uncertainties that needed to be resolved before the technology can be confidently scaled up for a successful demonstration plant design. Work remained in three primary areas: scale up of gas to solid heat transfer high temperature finned surface design the overall requirements of mechanical and process design. The CMB Phase II workscope built upon the results of Phase I and specifically addressed the remaining technical uncertainties. It included a scaled MTF heat transfer test to provide the necessary data to scale up gas-to-solids heat transfer. A stress test rig was built and tested to provide validation data for a stress model needed to support high temperature finned surface design. Additional cold flow model tests and MTF tests were conducted to address mechanical and process design issues. This information was then used to design and cost a commercial CMB design concept. Finally, the MBHE was reconfigured into a slice arrangement and tested for an extended duration at a commercial CFB plant.

Jukkola, Glen

2010-06-30T23:59:59.000Z

228

Generic repository design concepts and thermal analysis (FY11).  

SciTech Connect

Reference concepts for geologic disposal of used nuclear fuel and high-level radioactive waste in the U.S. are developed, including geologic settings and engineered barriers. Repository thermal analysis is demonstrated for a range of waste types from projected future, advanced nuclear fuel cycles. The results show significant differences among geologic media considered (clay/shale, crystalline rock, salt), and also that waste package size and waste loading must be limited to meet targeted maximum temperature values. In this study, the UFD R&D Campaign has developed a set of reference geologic disposal concepts for a range of waste types that could potentially be generated in advanced nuclear FCs. A disposal concept consists of three components: waste inventory, geologic setting, and concept of operations. Mature repository concepts have been developed in other countries for disposal of spent LWR fuel and HLW from reprocessing UNF, and these serve as starting points for developing this set. Additional design details and EBS concepts will be considered as the reference disposal concepts evolve. The waste inventory considered in this study includes: (1) direct disposal of SNF from the LWR fleet, including Gen III+ advanced LWRs being developed through the Nuclear Power 2010 Program, operating in a once-through cycle; (2) waste generated from reprocessing of LWR UOX UNF to recover U and Pu, and subsequent direct disposal of used Pu-MOX fuel (also used in LWRs) in a modified-open cycle; and (3) waste generated by continuous recycling of metal fuel from fast reactors operating in a TRU burner configuration, with additional TRU material input supplied from reprocessing of LWR UOX fuel. The geologic setting provides the natural barriers, and establishes the boundary conditions for performance of engineered barriers. The composition and physical properties of the host medium dictate design and construction approaches, and determine hydrologic and thermal responses of the disposal system. Clay/shale, salt, and crystalline rock media are selected as the basis for reference mined geologic disposal concepts in this study, consistent with advanced international repository programs, and previous investigations in the U.S. The U.S. pursued deep geologic disposal programs in crystalline rock, shale, salt, and volcanic rock in the years leading up to the Nuclear Waste Policy Act, or NWPA (Rechard et al. 2011). The 1987 NWPA amendment act focused the U.S. program on unsaturated, volcanic rock at the Yucca Mountain site, culminating in the 2008 license application. Additional work on unsaturated, crystalline rock settings (e.g., volcanic tuff) is not required to support this generic study. Reference disposal concepts are selected for the media listed above and for deep borehole disposal, drawing from recent work in the U.S. and internationally. The main features of the repository concepts are discussed in Section 4.5 and summarized in Table ES-1. Temperature histories at the waste package surface and a specified distance into the host rock are calculated for combinations of waste types and reference disposal concepts, specifying waste package emplacement modes. Target maximum waste package surface temperatures are identified, enabling a sensitivity study to inform the tradeoff between the quantity of waste per disposal package, and decay storage duration, with respect to peak temperature at the waste package surface. For surface storage duration on the order of 100 years or less, waste package sizes for direct disposal of SNF are effectively limited to 4-PWR configurations (or equivalent size and output). Thermal results are summarized, along with recommendations for follow-on work including adding additional reference concepts, verification and uncertainty analysis for thermal calculations, developing descriptions of surface facilities and other system details, and cost estimation to support system-level evaluations.

Howard, Robert (Oak Ridge National Laboratory, Oak Ridge, TN); Dupont, Mark (Savannah River Nuclear Solutions, Aiken, SC); Blink, James A. (Lawrence Livermore National Laboratory, Livermore, CA); Fratoni, Massimiliano (Lawrence Livermore National Laboratory, Livermore, CA); Greenberg, Harris (Lawrence Livermore National Laboratory, Livermore, CA); Carter, Joe (Savannah River Nuclear Solutions, Aiken, SC); Hardin, Ernest L.; Sutton, Mark A. (Lawrence Livermore National Laboratory, Livermore, CA)

2011-08-01T23:59:59.000Z

229

The Physical Concept of Truth [1931g  

Science Journals Connector (OSTI)

To make use of a philosophical concept in practical thinking is one thing, to render a pure and meaningful formulation of the concept quite another. Everyone faces the necessity of judging the truth of various as...

Maria Reichenbach; Robert S. Cohen

1978-01-01T23:59:59.000Z

230

Advanced fusion concepts: project summaries  

SciTech Connect

This report contains descriptions of the activities of all the projects supported by the Advanced Fusion Concepts Branch of the Office of Fusion Energy, US Department of Energy. These descriptions are project summaries of each of the individual projects, and contain the following: title, principle investigators, funding levels, purpose, approach, progress, plans, milestones, graduate students, graduates, other professional staff, and recent publications. Information is given for each of the following programs: (1) reverse-field pinch, (2) compact toroid, (3) alternate fuel/multipoles, (4) stellarator/torsatron, (5) linear magnetic fusion, (6) liners, and (7) Tormac. (MOW)

None

1980-12-01T23:59:59.000Z

231

Adhesives from modified soy protein  

DOE Patents (OSTI)

The, present invention provides useful adhesive compositions having similar adhesive properties to conventional UF and PPF resins. The compositions generally include a protein portion and modifying ingredient portion selected from the group consisting of carboxyl-containing compounds, aldehyde-containing compounds, epoxy group-containing compounds, and mixtures thereof. The composition is preferably prepared at a pH level at or near the isoelectric point of the protein. In other preferred forms, the adhesive composition includes a protein portion and a carboxyl-containing group portion.

Sun, Susan (Manhattan, KS); Wang, Donghai (Manhattan, KS); Zhong, Zhikai (Manhattan, KS); Yang, Guang (Shanghai, CN)

2008-08-26T23:59:59.000Z

232

Microgrid Equipment Selection and Control  

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

The U.S.-China Clean Energy Research Center (CERC) is a pioneering research and development (R&D) consortium bringing together governments, key policymakers, researchers, and industry to develop a long-term platform for sustainable U.S.-China joint R&D.

233

CERTS Microgrid Laboratory Test Bed  

E-Print Network (OSTI)

utility, allowing for demand-side management arrangements.resource planning, demand-side management, and building

Lasseter, R. H.

2010-01-01T23:59:59.000Z

234

CERTS Microgrid Laboratory Test Bed  

E-Print Network (OSTI)

distributed energy resources small power generatorsdistributed energy resources portfolio includes not only generators

ETO, J.

2010-01-01T23:59:59.000Z

235

CERTS Microgrid Laboratory Test Bed  

E-Print Network (OSTI)

integration. In combined-heat-and-power applications, thetested three combined-heat- and-power units to incorporate

Eto, Joe

2009-01-01T23:59:59.000Z

236

CERTS Microgrid Laboratory Test Bed  

E-Print Network (OSTI)

integration. In combined-heat-and-power applications, thetested three combined-heat- and-power units to incorporate

ETO, J.

2010-01-01T23:59:59.000Z

237

Rough Set Approximations in Formal Concept Analysis  

E-Print Network (OSTI)

Rough Set Approximations in Formal Concept Analysis Y.Y. Yao, Yaohua Chen Department of Computer}@cs.uregina.ca Abstract-- An important topic of rough set theory is the approximation of undefinable sets or concepts of approximation operators. In this paper, the notion of rough set approximations is introduced into formal concept

Yao, Yiyu

238

Statistical Decision Theory: Concepts, Methods and Applications  

E-Print Network (OSTI)

Statistical Decision Theory: Concepts, Methods and Applications (Special topics in Probabilistic Mazumder 950116380 #12;Part I: Decision Theory ­ Concepts and Methods 1 Part I: DECISION THEORY - Concepts and Methods Decision theory as the name would imply is concerned with the process of making decisions

Rosenthal, Jeffrey S.

239

Electrochemical Apparatus with Disposable and Modifiable Parts  

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

Electrochemical Apparatus with Disposable and Modifiable Parts Electrochemical Apparatus with Disposable and Modifiable Parts Electrochemical Apparatus with Disposable and Modifiable Parts The invention also includes electrochemical apparatus that can interface with optical instrumentation. If the working electrode is transparent, light from an optical fiber may be directed through the working electrode and into a cuvette. July 3, 2013 Electrochemical Apparatus with Disposable and Modifiable Parts Available for thumbnail of Feynman Center (505) 665-9090 Email Electrochemical Apparatus with Disposable and Modifiable Parts Applications: Electrochemical experiments in solution Electrochemical experiments on surfaces Bulk electrolysis experiments Fuel cells Corrosion studies Academic Labs Teaching and research Benefits: Incorporates disposable, commercially available cuvettes

240

Nevada Application Modify Water Right | Open Energy Information  

Open Energy Info (EERE)

Nevada Application Modify Water Right Jump to: navigation, search OpenEI Reference LibraryAdd to library Form: Nevada Application Modify Water Right Abstract Requires to modify...

Note: This page contains sample records for the topic "modified microgrid concept" 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

SUMMARY OF 2009 RHEOLOGY MODIFIER PROGRAM  

SciTech Connect

The overall objective of the EM-31 Rheological Modifiers and Wetting Agents program is to utilize commercially available rheology modifiers to increase the solids fraction of radioactive sludge based waste streams, resulting in an increase in throughput and decreasing the overall processing time. The program first investigates the impact of rheology modifiers on slurry simulants and then utilizes the most effective rheology modifiers on radioactive slurries. The work presented in this document covers the initial investigation of rheology modifier testing with simulants. This task is supported by both the Savannah River National Laboratory (SRNL) and Pacific Northwest National Laboratory (PNNL). The SRNL EM-31 task, for this year, was to investigate the use of rheology modifiers on simulant Defense Waste Processing Facility (DWPF) melter feeds. The task is to determine, based on the impact of the rheology modifier, if there are rheology modifiers that could reduce the water content of the slurry going to the DWPF melter, hence increasing the melt rate by decreasing the water loading. The rheology modifier in essence would allow a higher solids content slurry to have the same type of rheology or pumpability of a lower solids slurry. The modifiers selected in this report were determined based on previous modifiers used in high level waste melter feed simulants, on-going testing performed by counterparts at PNNL, and experiences gain through use of modifiers in other Department of Energy (DOE) processes such as grout processing. There were 12 rheology modifiers selected for testing, covering both organic and inorganic types and they were tested at four different concentrations for a given melter feed. Five different DWPF melter feeds were available and there was adequate material in one of the melter feeds to increase the solids concentration, resulting in a total of six simulants for testing. The mass of melter feed available in each simulant was not adequate for testing each rheology modifier, hence based on the changes in rheology for a given rheology modifier, rheology modifiers were either dropped or added between simulants. Three rheology modifiers were used on all simulants. The results from this testing indicate that citric acid or polycarboxylate based rheology modifiers are the most effective in reducing the yield stress, by as much as 70% at the higher rheology modifier additions and were effective on most of the tested simulants. These rheology modifiers are organic, hence the can also be used as reductants in melter operations. The most effective non-organic rheology modifiers, sodium metasilicate reduced the yield stress by 10%. It is recommended that both citric acid and commercially available polycarboxylate rheology modifiers be further investigated. Different molecular weight polycarboxylates and different types of polycarboxylates used in other industries must be considered. These polycarboxylates are extensively utilized in the cement, ceramic, and water treatment processes, hence readily available. Future work on DWPF melter feeds involving rheology modifiers should include, assuming the present method of processing sludge through DPWF does not change, is: (1) Investigate the use of polycarboxylate in various processes and procure polycarboxylates for testing. Limit rheology modifier selection and future testing between four and eight different types. (2) Test rheology modifiers on at least two different chemical types or bounding DWPF SME product simulants. Test to include the impact of boiling and the effectiveness in reducing water content via rheology versus weight percent curves. (3) Based on selected modifiers, perform testing on actual radioactive melter feed based on results from simulant testing.

Hansen, E.

2009-12-08T23:59:59.000Z

242

Method of modifying a surface  

DOE Patents (OSTI)

The present invention provides a surface modification method that provides beneficial changes in surface properties, can modify a surface to a greater depth than previous methods, and that is suitable for industrial application. The present method comprises applying a thin-film coating to a surface of a substrate, then subjecting the coated surface to an ion beam. The ion beam power pulse heats the coated surface, leading to alloying between the material in the coating and the material of the substrate. Rapid cooling of the alloyed layer after an ion beam pulse can lead to formation of metastable alloys and microstructures not accessible by conventional alloying methods or intense ion beam treatment of the substrate alone.

Renk, Timothy J. (Albuquerque, NM); Sorensen, Neil R. (Albuquerque, NM); Senft, Donna Cowell (Albuquerque, NM); Buchheit, Jr., Rudolph G. (Columbus, OH); Thompson, Michael O. (Ithaca, NY); Grabowski, Kenneth S. (Alexandria, VA)

2000-01-01T23:59:59.000Z

243

The Modified Embedded Atom Method  

SciTech Connect

Recent modifications have been made to generalize the Embedded Atom Method (EAM) to describe bonding in diverse materials. By including angular dependence of the electron density in an empirical way, the Modified Embedded Atom Method (MEAM) has been able to reproduce the basic energetic and structural properties of 45 elements. This method is ideally suited for examining the interfacial behavior of dissimilar materials. This paper explains in detail the derivation of the method, shows how the parameters of the MEAM are determined directly from experiment or first principles calculations, and examines the quality of the reproduction of the database. Materials with fcc, bcc, hcp, and diamond cubic crystal structure are discussed. A few simple examples of the application of the MEAM to surfaces and interfaces are presented. Calculations of pullout of a SiC fiber in a diamond matrix as a function of applied stress show non-uniform deformation of the fiber.

Baskes, M.I.

1994-08-01T23:59:59.000Z

244

Concept Testing and Development at the Raft River Geothermal...  

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

Concept Testing and Development at the Raft River Geothermal Field, Idaho Concept Testing and Development at the Raft River Geothermal Field, Idaho Concept Testing and Development...

245

ADVANCED DIRECT LIQUEFACTION CONCEPTS FOR PETC GENERIC UNITS  

SciTech Connect

The results of Laboratory and Bench-Scale experiments and supporting technical and economic assessments conducted under DOE Contract No. DE-AC22-91PC91040 is reported for the period July 1, 1998 to September 30, 1998. This contract is with the University of kentucky Research Foundation, which supports work with the University of Kentucky Center for Applied Energy Researc, CONSOL, Inc., LDP Associates, and Hydrocarbon Technologies, Inc. This work involves the introduction into the basic two-stage liquefaction process several novel concepts, which include dispersed lower-cost catalysts, coal cleaning by oil agglomeration, and distillate hydrotreating and dewaxing. This project has been modified to include an investigation into the production of value added materials from coal using liquefaction based technologies.

Adam J. Berkovich

2000-02-01T23:59:59.000Z

246

Optimization Online - Directed modified Cholesky factorizations and ...  

E-Print Network (OSTI)

This must holds with full mathematical rigor, although the computations are done in floating-point arithmetic. Similarly, a directed modified Cholesky factorization...

Ferenc Domes

247

Bangladesh-NAMA Concepts | Open Energy Information  

Open Energy Info (EERE)

Bangladesh-NAMA Concepts Bangladesh-NAMA Concepts (Redirected from NAMAs in Least Developed Countries) Jump to: navigation, search Name NAMA Concepts for Bangladesh Agency/Company /Organization International Institute for Sustainable Development (IISD) Sector Climate, Energy, Land Focus Area Non-renewable Energy, Agriculture, Buildings, Energy Efficiency, Forestry, Greenhouse Gas, Industry, Land Use, Transportation Topics Adaptation, Background analysis, Baseline projection, GHG inventory, Low emission development planning, Pathways analysis Program Start 2010 Program End 2013 Country Bangladesh Southern Asia References International Institute for Sustainable Development (IISD)[1] "This policy brief presents the results of a screening exercise to identify NAMA concepts for Bangladesh. Multiple government planning documents were

248

Advanced Combustion Concepts - Enabling Systems and Solutions...  

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

engine * Integration of proposed air path and HCCI combustion control strategies into ECU software * Prototype level 2 updates and proof of combustion concept for vehicle readiness...

249

Combustion Model for Engine Concept Development | Department...  

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

Combustion Model for Engine Concept Development Presentation shows how 1-cylinder testing, 3D combustion CFD and 1D gas exchange with an advanced combustion model are used...

250

THE CONCEPT OF ENERGY EFFICIENCY IN PRIMARY ...  

Science Journals Connector (OSTI)

NUMBER. 5. THE CONCEPT OF ENERGY EFFICIENCY. IN .... be equal to the energy fixed in the cube, ..... and the chlorophyll content of the algal cells will vary

2000-02-12T23:59:59.000Z

251

Mapping the neural architecture of concepts.  

E-Print Network (OSTI)

??How are concepts represented in the brain? When we hear the ringing of a bell, or watch a bell swinging back and forth, is there (more)

Man, Kingson

2015-01-01T23:59:59.000Z

252

novel-concepts | netl.doe.gov  

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

Program Goals & Targets Systems Analysis Regulatory Drivers Program Plan Capture Handbook Novel Concepts for the Compression of Large Volumes of Carbon Dioxide Project No.:...

253

Formal Concept Analysis Based on Rough Set Theory and a Construction Algorithm of Rough Concept Lattice  

Science Journals Connector (OSTI)

FCA(Formal Concept Analysis), which is accurate and complete in knowledge representation, is an effective tool for data analysis and knowledge discovery. A new lattice structure named RCL (Rough Concept Lattice) ...

Haifeng Yang

2011-01-01T23:59:59.000Z

254

Concept Relations in a Multilingual Thesaurus  

Science Journals Connector (OSTI)

...ARTICLE Concept Relations in a Multilingual Thesaurus Joel J. Lloyd 1 1 American Geological...geology lexicons multilingual objectives Thesaurus GeoRef, Copyright 2004, American Geological...1974 Concept Relations in a Multilingual Thesaurus Lloyd Joel J. Author 152 GLGYBA Geology...

255

Rough Set Approximations in Formal Concept Analysis  

E-Print Network (OSTI)

Rough Set Approximations in Formal Concept Analysis Yiyu Yao and Yaohua Chen Department of Computer}@cs.uregina.ca Abstract. A basic notion shared by rough set analysis and formal concept anal- ysis is the definability to each other based on defin- ability. In this paper, the notion of rough set approximations is introduced

Yao, Yiyu

256

AOC-posets: a scalable alternative to Concept Lattices for Relational Concept Analysis  

E-Print Network (OSTI)

AOC-posets: a scalable alternative to Concept Lattices for Relational Concept Analysis Xavier the latter but also an increase in complexity. Besides, in numerous applications of FCA, AOC-posets are used rather than lattices in order to reduce combinatorial problems. An AOC-poset is a subset of the concept

Paris-Sud XI, Université de

257

Review Of Rheology Modifiers For Hanford Waste  

SciTech Connect

As part of Savannah River National Laboratory (SRNL)'s strategic development scope for the Department of Energy - Office of River Protection (DOE-ORP) Hanford Tank Waste Treatment and Immobilization Plant (WTP) waste feed acceptance and product qualification scope, the SRNL has been requested to recommend candidate rheology modifiers to be evaluated to adjust slurry properties in the Hanford Tank Farm. SRNL has performed extensive testing of rheology modifiers for use with Defense Waste Processing Facility (DWPF) simulated melter feed - a high undissolved solids (UDS) mixture of simulated Savannah River Site (SRS) Tank Farm sludge, nitric and formic acids, and glass frit. A much smaller set of evaluations with Hanford simulated waste have also been completed. This report summarizes past work and recommends modifiers for further evaluation with Hanford simulated wastes followed by verification with actual waste samples. Based on the review of available data, a few compounds/systems appear to hold the most promise. For all types of evaluated simulated wastes (caustic Handford tank waste and DWPF processing samples with pH ranging from slightly acidic to slightly caustic), polyacrylic acid had positive impacts on rheology. Citric acid also showed improvement in yield stress on a wide variety of samples. It is recommended that both polyacrylic acid and citric acid be further evaluated as rheology modifiers for Hanford waste. These materials are weak organic acids with the following potential issues: The acidic nature of the modifiers may impact waste pH, if added in very large doses. If pH is significantly reduced by the modifier addition, dissolution of UDS and increased corrosion of tanks, piping, pumps, and other process equipment could occur. Smaller shifts in pH could reduce aluminum solubility, which would be expected to increase the yield stress of the sludge. Therefore, it is expected that use of an acidic modifier would be limited to concentrations that do not appreciably change the pH of the waste; Organics are typically reductants and could impact glass REDOX if not accounted for in the reductant addition calculations; Stability of the modifiers in a caustic, radioactive environment is not known, but some of the modifiers tested were specifically designed to withstand caustic conditions; These acids will add to the total organic carbon content of the wastes. Radiolytic decomposition of the acids could result in organic and hydrogen gas generation. These potential impacts must be addressed in future studies with simulants representative of real waste and finally with tests using actual waste based on the rheology differences seen between SRS simulants and actual waste. The only non-organic modifier evaluated was sodium metasilicate. Further evaluation of this modifier is recommended if a reducing modifier is a concern.

Pareizs, J. M.

2013-09-30T23:59:59.000Z

258

Deep Offshore and New Foundation Concepts  

Science Journals Connector (OSTI)

Abstract As the offshore wind power sector moves to deeper waters, new foundation concepts are being developed. The European Wind Energy Association (EWEA) has created a task force under its Offshore Wind Industry Group, to look specifically at the issues revolving around the development of deep offshore and new foundation concepts. Within this paper a comprehensive presentation of state-of-the-art concepts and their maturity is provided. In addition the main technical, economic and political challenges are discussed and recommendations are provided to accommodate the sustainable development of the deep offshore wind sector in Europe.

Arapogianni Athanasia; Anne Benedicte Genachte

2013-01-01T23:59:59.000Z

259

Test particle motion in modified gravity theories  

E-Print Network (OSTI)

We derive the equations of motion of an electrically neutral test particle for modified gravity theories in which the covariant divergence of the ordinary matter energy-momentum tensor dose not vanish (i.e. $\

Mahmood Roshan

2013-02-05T23:59:59.000Z

260

DNV Global Energy Concepts | Open Energy Information  

Open Energy Info (EERE)

DNV Global Energy Concepts DNV Global Energy Concepts Jump to: navigation, search Name DNV Global Energy Concepts Place Seattle, Washington Zip 98101 Sector Services Product Global Energy Concepts LLC (GEC) is a multi-discipline engineering and technology consulting firm providing services to clients involved in the energy industry. Coordinates 47.60356°, -122.329439° 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":47.60356,"lon":-122.329439,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "modified microgrid concept" 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

The Mars Atmospheric Constellation Observatory (MACO) Concept  

Science Journals Connector (OSTI)

The Mars Atmospheric Constellation Observatory (MACO) represents an innovative approach...2, and dust cycles together with the energy and momentum budgets. The mission concept is based on a constellation of satel...

E. R. Kursinski; W. Folkner; C. Zuffada

2004-01-01T23:59:59.000Z

262

Tarski's Conception of Logic1 Solomon Feferman  

E-Print Network (OSTI)

1 Tarski's Conception of Logic1 Solomon Feferman In its widest scope, Tarski thought the aims program in Logic and Methodology. In his letter to the dean urging its creation, Tarski was already able

Feferman, Solomon

263

The Power-to-Gas Concept  

Science Journals Connector (OSTI)

This chapter gives an overview of the technological fundamentals of the Power-to-Gas concept. After a general introduction to the ... itself, efficiencies and synergy potentials of the Power-to-Gas technology are...

Markus Lehner; Robert Tichler

2014-01-01T23:59:59.000Z

264

Energy Concepts Corporation | Open Energy Information  

Open Energy Info (EERE)

Name: Energy Concepts Corporation Address: HC68 Box11AA Place: Sapello, New Mexico Zip: 87745 Product: Renewable energy products and services Phone Number: 1-877-SOLAR13...

265

"Amartya Sen's Misleading Conception of Utilitarianism"  

E-Print Network (OSTI)

Amartya Sens misleading conception of utilitarianismParis, France) Abstract : Amartya Sen has become one of theSen 1979, p. 367). Amartya Sen thus first presented his

Benicourt, Emmanuelle

2008-01-01T23:59:59.000Z

266

Inherent safety concepts in nuclear power reactors  

Science Journals Connector (OSTI)

Different inherent safety concepts being considered in fast and thermal reactors are presented after outlining the basic goals of nuclear reactor safety, the defence in depth philosophy to achieve these goal...

O M Pal Singh; R Shankar Singh

1989-06-01T23:59:59.000Z

267

Meteorological Network Expansion Using Information Decay Concept  

Science Journals Connector (OSTI)

A generalized network design methodology was developed by using the basic entropy concept introduced by Shannon in communication engineering. In order to select potential sites for meteorological network expansion purposes, the meteorological ...

Tahir Husain; Mustafa A. Ukayli; Hasin U. Khan

1986-03-01T23:59:59.000Z

268

The concept of a sustainable agriculture  

E-Print Network (OSTI)

The concept of a sustainable agriculture varies much with writers: some see it as the preservation of agricultural resources or as the reduction of agricultural contamination of the environment or both. Other authors focus on economic viability...

Kriewaldt, David Mark

2012-06-07T23:59:59.000Z

269

FINGERPRINTING SOILS A PROOF OF CONCEPT  

E-Print Network (OSTI)

as UNDERGRADUATE RESEARCH SCHOLAR A Senior Scholars Thesis by CATHERINE KOBYLINSKI FINGERPRINTING SOILS ? A PROOF OF CONCEPT Approved by: Research Advisor: Cristine Morgan Director for Honors and Undergraduate Research: Sumana Datta Major... iii ABSTRACT Fingerprinting Soils - A Proof of Concept. (April 2011) Catherine Kobylinski Department of Plant Pathology and Microbiology Texas A&M University Research Advisor: Dr. Cristine Morgan Department of Soil and Crop Sciences...

Kobylinski, Catherine

2011-05-06T23:59:59.000Z

270

SLUDGE TREATMENT PROJECT COST COMPARISON BETWEEN HYDRAULIC LOADING AND SMALL CANISTER LOADING CONCEPTS  

SciTech Connect

The Sludge Treatment Project (STP) is considering two different concepts for the retrieval, loading, transport and interim storage of the K Basin sludge. The two design concepts under consideration are: (1) Hydraulic Loading Concept - In the hydraulic loading concept, the sludge is retrieved from the Engineered Containers directly into the Sludge Transport and Storage Container (STSC) while located in the STS cask in the modified KW Basin Annex. The sludge is loaded via a series of transfer, settle, decant, and filtration return steps until the STSC sludge transportation limits are met. The STSC is then transported to T Plant and placed in storage arrays in the T Plant canyon cells for interim storage. (2) Small Canister Concept - In the small canister concept, the sludge is transferred from the Engineered Containers (ECs) into a settling vessel. After settling and decanting, the sludge is loaded underwater into small canisters. The small canisters are then transferred to the existing Fuel Transport System (FTS) where they are loaded underwater into the FTS Shielded Transfer Cask (STC). The STC is raised from the basin and placed into the Cask Transfer Overpack (CTO), loaded onto the trailer in the KW Basin Annex for transport to T Plant. At T Plant, the CTO is removed from the transport trailer and placed on the canyon deck. The CTO and STC are opened and the small canisters are removed using the canyon crane and placed into an STSC. The STSC is closed, and placed in storage arrays in the T Plant canyon cells for interim storage. The purpose of the cost estimate is to provide a comparison of the two concepts described.

GEUTHER J; CONRAD EA; RHOADARMER D

2009-08-24T23:59:59.000Z

271

Glucose oxidase-graphene-chitosan modified electrode for direct...  

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

oxidase-graphene-chitosan modified electrode for direct electrochemistry and glucose sensing. Glucose oxidase-graphene-chitosan modified electrode for direct electrochemistry and...

272

Radar Testbed Characterization for Evaluation of Modulated Scatterer Concepts  

E-Print Network (OSTI)

The following research explores the concepts of communication-embedded radar with an emphasis on radar operation and modulated scatterer concepts. Once firmly established the concept of communication via radar backscatter ...

Casper, Matt

2010-05-27T23:59:59.000Z

273

Sustainable Energy Concepts: A Sustainable energy concept for Safari Resort Beekse Bergen:.  

E-Print Network (OSTI)

??Research to sustainable energy concepts with a holiday resort as case study. Near the safaripark a new holiday resort will be built. The missing natrual (more)

Vons, G.J.

2011-01-01T23:59:59.000Z

274

Solar Energy Grid Integration Systems-Advanced Concepts | Department...  

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

Systems Integration Solar Energy Grid Integration Systems-Advanced Concepts Solar Energy Grid Integration Systems-Advanced Concepts On September 1, 2011, DOE announced 25.9...

275

Unified Resolve 2014: A Proof of Concept for Radiological Support...  

Office of Environmental Management (EM)

Unified Resolve 2014: A Proof of Concept for Radiological Support to Incident Commanders Unified Resolve 2014: A Proof of Concept for Radiological Support to Incident Commanders...

276

Concept Testing and Development at the Raft River Geothermal...  

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

Concept Testing and Development at the Raft River Geothermal Field, Idaho Concept Testing and Development at the Raft River Geothermal Field, Idaho DOE 2010 Geothermal Technologies...

277

Improved Engine Design Concepts Using the Second Law of Thermodynamics...  

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

Design Concepts Using the Second Law of Thermodynamics Improved Engine Design Concepts Using the Second Law of Thermodynamics Presentation from the U.S. DOE Office of Vehicle...

278

Advanced Materials and Concepts for Portable Power Fuel Cells...  

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

Advanced Materials and Concepts for Portable Power Fuel Cells Advanced Materials and Concepts for Portable Power Fuel Cells These slides were presented at the 2010 New Fuel Cell...

279

Introduction to DMFCs - Advanced Materials and Concepts for Portable...  

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

DMFCs - Advanced Materials and Concepts for Portable Power Fuel Cells Introduction to DMFCs - Advanced Materials and Concepts for Portable Power Fuel Cells Presentation by Piotr...

280

The system architecting process for a solar power satellite concept.  

E-Print Network (OSTI)

??This thesis discusses the system architecting process for a Solar Power Satellite (SPS) concept.The heuristic approach allows a spectrum of concepts to be narrowed to (more)

Bidwell, Joseph Grady

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Plants having modified response to ethylene  

DOE Patents (OSTI)

The invention includes transformed plants having at least one cell transformed with a modified ETR nucleic acid. Such plants have a phenotype characterized by a decrease in the response of at least one transformed plant cell to ethylene as compared to a plant not containing the transformed plant cell. Tissue and/or temporal specificity for expression of the modified ETR nucleic acid is controlled by selecting appropriate expression regulation sequences to target the location and/or time of expression of the transformed nucleic acid. The plants are made by transforming at least one plant cell with an appropriate modified ETR nucleic acid, regenerating plants from one or more of the transformed plant cells and selecting at least one plant having the desired phenotype. 31 figs.

Meyerowitz, E.M.; Chang, C.; Bleecker, A.B.

1997-11-18T23:59:59.000Z

282

Plants having modified response to ethylene  

DOE Patents (OSTI)

The invention includes transformed plants having at least one cell transformed with a modified ETR nucleic acid. Such plants have a phenotype characterized by a decrease in the response of at least one transformed plant cell to ethylene as compared to a plant not containing the transformed plant cell. Tissue and/or temporal specificity for expression of the modified ETR nucleic acid is controlled by selecting appropriate expression regulation sequences to target the location and/or time of expression of the transformed nucleic acid. The plants are made by transforming at least one plant cell with an appropriate modified ETR nucleic acid, regenerating plants from one or more of the transformed plant cells and selecting at least one plant having the desired phenotype.

Meyerowitz, Elliot M. (Pasadena, CA); Chang, Caren (Pasadena, CA); Bleecker, Anthony B. (Madison, WI)

1998-01-01T23:59:59.000Z

283

Plants having modified response to ethylene  

DOE Patents (OSTI)

The invention includes transformed plants having at least one cell transformed with a modified ETR nucleic acid. Such plants have a phenotype characterized by a decrease in the response of at least one transformed plant cell to ethylene as compared to a plant not containing the transformed plant cell. Tissue and/or temporal specificity for expression of the modified ETR nucleic acid is controlled by selecting appropriate expression regulation sequences to target the location and/or time of expression of the transformed nucleic acid. The plants are made by transforming at least one plant cell with an appropriate modified ETR nucleic acid, regenerating plants from one or more of the transformed plant cells and selecting at least one plant having the desired phenotype.

Meyerowitz, Elliott M. (Pasadena, CA); Chang, Caren (Pasadena, CA); Bleecker, Anthony B. (Madison, WI)

1997-01-01T23:59:59.000Z

284

Viridian Concepts Ltd | Open Energy Information  

Open Energy Info (EERE)

Viridian Concepts Ltd Viridian Concepts Ltd Jump to: navigation, search Name Viridian Concepts Ltd Place Cambridge, United Kingdom Zip SG8 5NT Sector Solar Product Developing a low-cost solar thermal panel for household use. Coordinates 43.003745°, -89.017499° 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":43.003745,"lon":-89.017499,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

285

Concept:Utility Companies | Open Energy Information  

Open Energy Info (EERE)

Utility Companies Utility Companies Jump to: navigation, search Description of concept "Utility Companies"RDF feed [[Category:Utility Companies]] [[EiaUtilityId::+]] Contents: Top - 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Pages of concept "Utility Companies" Showing 200 pages belonging to that concept. (previous 200) (next 200) 4 4-County Electric Power Assn A A & N Electric Coop A & N Electric Coop (Virginia) AEP Generating Company AEP Texas Central Company AEP Texas North Company AES Eastern Energy LP AGC Division of APG Inc AP Holdings LLC AP Holdings LLC (New York) APN Starfirst, L.P. APN Starfirst, L.P. (Illinois) APN Starfirst, L.P. (Ohio) APN Starfirst, L.P. (Texas) APNA Energy ARCO Products Co-Watson Accent Energy Holdings, LLC Accent Energy Holdings, LLC (New York)

286

Renewable Energy Project Development: Advanced Concept Topics  

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

Concept Topics Concept Topics An Introduction to Risk, Tribal Roles, and Support Policies in the Renewable Energy Project Development Process Course Outline What we will cover...  About the DOE Office of Indian Energy Education Initiative  Concepts and Policies for Understanding Renewable Energy Projects on Tribal Lands - Risk and Uncertainty - Tribal Project Roles - Policies and Incentives  Additional Information and Resources 2 Introduction The U.S. Department of Energy (DOE) Office of Indian Energy Policy and Programs is responsible for assisting Tribes with energy planning and development, infrastructure, energy costs, and electrification of Indian lands and homes. As part of this commitment and on behalf of DOE, the Office of Indian Energy is leading education

287

Integrated international safeguards concepts for fuel reprocessing  

SciTech Connect

This report is the fourth in a series of efforts by the Los Alamos National Laboratory and Sandia National Laboratories, Albuquerque, to identify problems and propose solutions for international safeguarding of light-water reactor spent-fuel reprocessing plants. Problem areas for international safeguards were identified in a previous Problem Statement (LA-7551-MS/SAND79-0108). Accounting concepts that could be verified internationally were presented in a subsequent study (LA-8042). Concepts for containment/surveillance were presented, conceptual designs were developed, and the effectiveness of these designs was evaluated in a companion study (SAND80-0160). The report discusses the coordination of nuclear materials accounting and containment/surveillance concepts in an effort to define an effective integrated safeguards system. The Allied-General Nuclear Services fuels reprocessing plant at Barnwell, South Carolina, was used as the reference facility.

Hakkila, E.A.; Gutmacher, R.G.; Markin, J.T.; Shipley, J.P.; Whitty, W.J.; Camp, A.L.; Cameron, C.P.; Bleck, M.E.; Ellwein, L.B.

1981-12-01T23:59:59.000Z

288

Electrochemical apparatus comprising modified disposable rectangular cuvette  

DOE Patents (OSTI)

Electrochemical apparatus includes a disposable rectangular cuvette modified with at least one hole through a side and/or the bottom. Apparatus may include more than one cuvette, which in practice is a disposable rectangular glass or plastic cuvette modified by drilling the hole(s) through. The apparatus include two plates and some means of fastening one plate to the other. The apparatus may be interfaced with a fiber optic or microscope objective, and a spectrometer for spectroscopic studies. The apparatus are suitable for a variety of electrochemical experiments, including surface electrochemistry, bulk electrolysis, and flow cell experiments.

Dattelbaum, Andrew M; Gupta, Gautam; Morris, David E

2013-09-10T23:59:59.000Z

289

Modified discrete random walk with absorption  

E-Print Network (OSTI)

We obtain expected number of arrivals, probability of arrival, absorption probabilities and expected time before absorption for a modified discrete random walk on the (sub)set of integers. In a [pqrs] random walk the particle can move one step forward or backward, stay for a moment in the same state or it can be absorbed immediately in the current state. M[pqrs] is a modified version, where probabilities on both sides of a multiple function barrier M are of different [pqrs] type.

Theo van Uem

2009-03-02T23:59:59.000Z

290

The Path to Fusion Energy for Concepts Currently at the Concept Exploration Level  

E-Print Network (OSTI)

confinement concepts · Spheromak · FRC Concepts operating in a very different parameter space · Magnetized") · Electrostatic confinement · Others #12;EBH 1/13/03 Development plan for toroidal confinement ­ spheromak Status of spheromaks This wide range of reactor visions offers opportunities for a better reactor, but the development

291

Bangladesh-NAMA Concepts | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Bangladesh-NAMA Concepts Jump to: navigation, search Name NAMA Concepts for Bangladesh Agency/Company /Organization International Institute for Sustainable Development (IISD) Sector Climate, Energy, Land Focus Area Non-renewable Energy, Agriculture, Buildings, Energy Efficiency, Forestry, Greenhouse Gas, Industry, Land Use, Transportation Topics Adaptation, Background analysis, Baseline projection, GHG inventory, Low emission development planning, Pathways analysis Program Start 2010 Program End 2013 Country Bangladesh Southern Asia References International Institute for Sustainable Development (IISD)[1]

292

Industrial Fellowship in Logistics Apply the tools of logistics science to analyze, modify or rebuild the logistics system of an industry-leader  

E-Print Network (OSTI)

Industrial Fellowship in Logistics Project Apply the tools of logistics science to analyze, modify or rebuild the logistics system of an industry-leader automotive supplier company. Understand the logistics of logistics network, and investigate and quantify potential savings. Design the concept of a computerized

Lee, Chi-Guhn

293

Cosmological Acceleration: Dark Energy or Modified Gravity?  

E-Print Network (OSTI)

We review the evidence for recently accelerating cosmological expansion or "dark energy", either a negative pressure constituent in General Relativity (Dark Energy) or modified gravity (Dark Gravity), without any Dark Energy constituent. If constituent Dark Energy does not exist, so that our universe is now dominated by pressure-free matter, Einstein gravity must be modified at low curvature. The vacuum symmetry of any Robertson-Walker universe then characterizes Dark Gravity as low- or high-curvature modifications of Einstein gravity. The dynamics of either kind of "dark energy" cannot be derived from the homogeneous expansion alone, but requires also observing the growth of inhomogeneities. Present and projected observations are all consistent with a small fine tuned cosmological constant, with nearly static Dark Energy, or with gravity modified at cosmological scales. The growth of cosmological fluctuations will potentially distinguish static "dark energy" from dynamic "dark energy" with equation of state $w(z)$ either changing rapidly or tracking the background matter. But to cosmologically distinguish $\\Lambda$CDM from modified gravity will require a weak lensing shear survey more ambitious than any now projected. Dvali-Gabadadze-Porrati modifications of Einstein gravity may also be detected in refined bservations in the solar system or at the intermediate Vainstein scale. Dark Energy's epicyclic character, failure to explain the original Cosmic Coincidence ("Why now?") without fine tuning, inaccessibility to laboratory or solar system tests, along with braneworld theories, now motivate future precision solar system, Vainstein-scale and cosmological-scale studies of Dark Gravity.

Sidney Bludman

2006-05-08T23:59:59.000Z

294

Maryland Global Initiatives Corporation Request to Modify  

E-Print Network (OSTI)

Maryland Global Initiatives Corporation Request to Modify Payment Authorization Agreement (PAA an existing PAA with this MGIC site: 2. The chartstring funding the existing PAA is: Project ID Owner Dept): Terminate the PAA as of (date): Change in scope of work for site (attach) Other change (describe) 4

Weber, David J.

295

Supplemental Data The Arabidopsis Chromatin-Modifying  

E-Print Network (OSTI)

-1 45S siR Nucleolar dot observed: Dispersed nuclear signal: No signal: # nuclei observed 100 0 0 n = 75 = 62 0 9 91 n = 72 0 29 71 n = 76 5S siR Nucleolar dot observed: Dispersed nuclear signal: No signal1 Supplemental Data The Arabidopsis Chromatin-Modifying Nuclear siRNA Pathway Involves a Nucleolar

Jacobsen, Steve

296

Lorentz Invariance Violation in Modified Gravity  

E-Print Network (OSTI)

We consider an environmentally dependent violation of Lorentz invariance in scalar-tensor models of modified gravity where General Relativity is retrieved locally thanks to a screening mechanism. We find that fermions have a modified dispersion relation and would go faster than light in an anisotropic and space-dependent way along the scalar field lines of force. Phenomenologically, these models are tightly restricted by the amount of Cerenkov radiation emitted by the superluminal particles, a constraint which is only satisfied by chameleons. Measuring the speed of neutrinos emitted radially from the surface of the earth and observed on the other side of the earth would probe the scalar field profile of modified gravity models in dense environments. We argue that the test of the equivalence principle provided by the Lunar ranging experiment implies that a deviation from the speed of light, for natural values of the coupling scale between the scalar field and fermions, would be below detectable levels, unless gravity is modified by camouflaged chameleons where the field normalisation is environmentally dependent.

Philippe Brax

2012-02-03T23:59:59.000Z

297

Conception Wind Project | Open Energy Information  

Open Energy Info (EERE)

Conception Wind Project Conception Wind Project Jump to: navigation, search Name Conception Wind Project Facility Conception Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Wind Capital Group/John Deere Capital Developer Wind Capital Group/John Deere Capital Energy Purchaser Associated Electric Cooperative Location Nodaway County MO Coordinates 40.246984°, -94.675376° 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":40.246984,"lon":-94.675376,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

298

Exergy as vital concept of environmental education  

Science Journals Connector (OSTI)

Exergy is a well-established concept in engineering, but the real world processes involving energy and matter need to be linked to the environmental engineering education. The living nature and the human engineering actions can not anymore be separated ... Keywords: electric transportation, energy, engineering education, environment, exergy, induction motor

Cornelia Aida Bulucea; Doru Adrian Nicola; Gheorghe Manolea; Constantin Brandusa; Daniel Cristian Cismaru; Andreea Brandusa

2008-07-01T23:59:59.000Z

299

State and Transition Modeling History & Current Concepts  

E-Print Network (OSTI)

management input · Friedel(1991) concentrated on thresholds ­ "...compatible with state and transition theoryState and Transition Modeling History & Current Concepts Tamzen K. Stringham Oregon State vegetation change #12;· Non-equilibrium Models (States, Transitions and Thresholds) ­ Encompass Range

300

Michael Gronceski Mission Concept Review (MCR),  

E-Print Network (OSTI)

on a plan to address the issues and concerns in the review board's report. d) Agreement exists on a plan review and the review board(s) have been resolved, or a timely plan exists to resolve the issues. gMichael Gronceski 1/31/2013 #12;#12; Mission Concept Review (MCR), System Requirements Review (SRR

Rhoads, James

Note: This page contains sample records for the topic "modified microgrid concept" 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

Emerging Concepts of Pharmaceutical Research Funding  

E-Print Network (OSTI)

and the pharmaceutical industry to foster development of products that are highly beneficial for a larger partEmerging Concepts of Pharmaceutical Research Funding For a More Sustainable Society March 18th 2014 drawback is the lack of motivation to develop products targeted towards regions outside industrialized

Moeller, Ralf

302

Novel Stack Concepts: Patterned Aligned Carbon Nanotubes  

E-Print Network (OSTI)

Novel Stack Concepts: Patterned Aligned Carbon Nanotubes as Electrodes in MEAs Di-Jia Liu proprietary or confidential information #12;Objective To develop a novel aligned carbon nanotube (ACNT/mass transport and thermal conductivity through patterned nanotubes with micrometer-dimension flowfield

303

CLEAN POWER ... FROM CONCEPT TO PRODUCTION  

E-Print Network (OSTI)

CLEAN POWER ... FROM CONCEPT TO PRODUCTION Manufacturing for the Hydrogen EconomyManufacturing for the Hydrogen Economy Status & Direction for Onboard Hydrogen Storage Andy Abele Quantum Fuel Systems information. #12;Hydrogen Storage ­ It's More Than a Tank Hydrogen storage systems on H2 vehicles must

304

New Concepts in Wind Power Forecasting Models  

E-Print Network (OSTI)

New Concepts in Wind Power Forecasting Models Vladimiro Miranda, Ricardo Bessa, João Gama, Guenter to the training of mappers such as neural networks to perform wind power prediction as a function of wind for more accurate short term wind power forecasting models has led to solid and impressive development

Kemner, Ken

305

Fundamental Concepts of Dependability Algirdas Avizienis  

E-Print Network (OSTI)

is the system property that integrates such attributes as reliability, availability, safety, security a satellite constellation, an airplane, a nuclear plant, or a radiation therapy device, or to maintain was the introduction of the coverage concept by Bouricius, Carter and #12;2 Schneider 3. Seminal work on software fault

Newcastle upon Tyne, University of

306

Fundamental Concepts of Dependability Algirdas Aviz ienis  

E-Print Network (OSTI)

is the system property that integrates such attributes as reliability, availability, safety, security a satellite constellation, an airplane, a nuclear plant, or a radiation therapy device, or to maintain was the introduction of the coverage concept by Bouricius, Carter and #12;2 Schneider 3 . Seminal work on software

Garlan, David

307

K. L. Ekinci Statistical Mechanical Concepts  

E-Print Network (OSTI)

/22 Probability and Statistics 3 1/27-1/29 Probability and Statistics 4 2/3-2/5 Review of Thermodynamics First LawK. L. Ekinci ME516 1 ME516 Statistical Mechanical Concepts MW 12-2 ENG 202 Instructor: Kamil Ekinci ENG 408 3-8670; ekinci@bu.edu Recommended Books: 1-Introduction to Modern Statistical Mechanics

Lin, Xi

308

TICS modelling : Conception of questionnaire Sylvie Damy  

E-Print Network (OSTI)

TICS modelling : Conception of questionnaire Sylvie Damy Associate professor in Computer Science Techniques ­ 16 Route de Gray- F-25030 Besançon cedex Introduction Within the framework of the action "TICS. The modelling of the "Territorial Intelligence Community Systems", or TICS is useful to transcribe

Paris-Sud XI, Université de

309

Function-based, biologically inspired concept generation  

Science Journals Connector (OSTI)

The natural world provides numerous cases for inspiration in engineering design. Biological organisms, phenomena, and strategies, which we refer to as biological systems, provide a rich set of analogies. These systems provide insight into sustainable ... Keywords: Biologically Inspired, Concept Generation, Engineering Design, Function-Based Design

Jacquelyn k. s. Nagel; Robert l. Nagel; Robert b. Stone; Daniel a. Mcadams

2010-11-01T23:59:59.000Z

310

CONCEPTS FOR TEACHING OPTOELECTRONIC CIRCUITS AND SYSTEMS  

E-Print Network (OSTI)

CONCEPTS FOR TEACHING OPTOELECTRONIC CIRCUITS AND SYSTEMS Smail TEDJINI, Benoit PANNETIER, Laurent.Lastname@esisar.inpg.fr Keywords : Optoelectronic devices, optical signals, communication systems, modeling, simulation, CAD and design of optical communication and optoelectronic systems is now necessary for the engineers

Boyer, Edmond

311

Utility Ontology Development with Formal Concept Analysis  

E-Print Network (OSTI)

Utility Ontology Development with Formal Concept Analysis Gaihua Fu and Anthony G Cohn School for the development of ontologies in the utility infrastructure domain. It arises from a practical industrial problem consideration of interoperability with other utility information systems. The proposed approach is based

Leeds, University of

312

A new sensor concept for simultaneous measurement of pressure, temperature and thickness of plate structures using modified wave propagation theory  

E-Print Network (OSTI)

-Acousto Photonic Non-Destructive Evaluation (TAP-NDE) is employed to remotely initiate and acquire interrogating ultrasonic waves. Parameters including pressure, temperature and plate thickness are determined through exploring the dispersion features...

Lo, Tzu-Wei

2005-11-01T23:59:59.000Z

313

Abstract-A hybrid cascaded multilevel inverter application for renewable energy resources including a reconfiguration  

E-Print Network (OSTI)

be achieved by using the microgrid concept as discussed in [2]. Data center or telecommunication buildings an alternative topology of hybrid cascaded multilevel inverter applied to a low voltage dc microgrid, micro-turbine, wind turbine and fuel cell put forward many promising applications with high efficiency

Tolbert, Leon M.

314

Effect of modifying host oil on coprocessing  

SciTech Connect

Petroleum is rich in aliphatic and naphthenic compounds, but usually contains relatively few aromatic or hydroaromatic compounds. This paper will explore ways in which petroleum resids (1000{degrees}F+) can be modified to improve them as coprocessing media with coal. Modifications of the resid include (1) hydrogenation with iron and molybdenum-based catalysts, (2) mild hydrogenation with dicobalt octacarbonyl (CO{sub 2}(CO){sub 8}) to convert any aromatics in the resid to hydroaromatics, (3) addition of certain polynuclear aromatic compounds that are excellent hydrogen shuttlers, and (4) catalytic hydrocracking of the resid. The untreated resid and modified oils were evaluated in thermal and catalytic coprocessing experiments. Measures for evaluating coprocessing performance include the fraction of coal converted to M soluble products and the yield of distillable oil, as measured using simulated distillation.

Hajdu, P.E.; Tierney, J.W.; Wender, I. [Univ. of Pittsburgh, PA (United States)

1995-12-01T23:59:59.000Z

315

Anomalous diffusion modifies solar neutrino fluxes  

E-Print Network (OSTI)

Density and temperature conditions in the solar core suggest that the microscopic diffusion of electrons and ions could be nonstandard: diffusion and friction coefficients are energy dependent, collisions are not two-body processes and retain memory beyond the single scattering event. A direct consequence of nonstandard diffusion is that the equilibrium energy distribution of particles departs from the Maxwellian one (tails goes to zero more slowly or faster than exponentially) modifying the reaction rates. This effect is qualitatively different from temperature and/or composition modification: small changes in the number of particles in the distribution tails can strongly modify the rates without affecting bulk properties, such as the sound speed or hydrostatic equilibrium, which depend on the mean values from the distribution. This mechanism can considerably increase the range of predictions for the neutrino fluxes allowed by the current experimental values (cross sections and solar properties) and can be u...

Kaniadakis, G; Lissia, M; Quarati, P

1998-01-01T23:59:59.000Z

316

Intramolecular ET Rates in Modified Ferrocytochromes c  

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

Intramolecular Electron-Transfer Rates on Driving Force, pH, Intramolecular Electron-Transfer Rates on Driving Force, pH, and Temperature in Ammineruthenium-Modified Ferrocytochromes c James F. Wishart, Ji Sun, Myung Cho, Chang Su, and Stephan S. Isied J. Phys. Chem. B 101, 687-693 (1997) [Find paper at ACS Publications] or use ACS Articles on Request Abstract: Several ruthenium ammine complexes were used to modify horse-heart cytochrome c at histidine-33, creating a series of (NH3)4(L)Ru-Cyt c derivatives (L = H2O/OH-, ammonia, 4-ethylpyridine, 3,5-lutidine, pyridine, isonicotinamide, N-methylpyrazinium) with a wide range of driving forces for Fe-to-Ru electron transfer (-DG° = -0.125 to +0.46 eV). Electron-transfer rates and activation parameters were measured by pulse radiolysis using azide or carbonate radicals. The driving-force dependence

317

Alternative Concepts and Technology | Open Energy Information  

Open Energy Info (EERE)

and Technology and Technology Jump to: navigation, search Logo: Alternative Concepts and Technology Name Alternative Concepts and Technology Place Orlando, Florida Sector Solar Product solar power, water catchments, organic gardening Year founded 2007 Website http://www.alternativeconcepts Coordinates 28.5383355°, -81.3792365° 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":28.5383355,"lon":-81.3792365,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

318

Operations monitoring concept. Consolidated Fuel Reprocessing Program  

SciTech Connect

Operations monitoring is a safeguards concept which could be applied in future fuel cycle facilities to significantly enhance the effectiveness of an integrated safeguards system. In general, a variety of operations monitoring techniques could be developed for both international and domestic safeguards application. The goal of this presentation is to describe specific examples of operations monitoring techniques as may be applied in a fuel reprocessing facility. The operations monitoring concept involves monitoring certain in-plant equipment, personnel, and materials to detect conditions indicative of the diversion of nuclear material. An operations monitoring subsystem should be designed to monitor operations only to the extent necessary to achieve specified safeguards objectives; there is no intent to monitor all operations in the facility. The objectives of the operations monitoring subsystem include: verification of reported data; detection of undeclared uses of equipment; and alerting the inspector to potential diversion activities. 1 fig.

Kerr, H.T.

1985-01-01T23:59:59.000Z

319

Testing Modified Gravity with Gravitational Wave Astronomy  

E-Print Network (OSTI)

The emergent area of gravitational wave astronomy promises to provide revolutionary discoveries in the areas of astrophysics, cosmology, and fundamental physics. One of the most exciting possibilities is to use gravitational-wave observations to test alternative theories of gravity. In this contribution we describe how to use observations of extreme-mass-ratio inspirals by the future Laser Interferometer Space Antenna to test a particular class of theories: Chern-Simons modified gravity.

Carlos F. Sopuerta; Nicolas Yunes

2010-10-01T23:59:59.000Z

320

Characterization of electrochemically modified polycrystalline platinum surfaces  

SciTech Connect

The characterization of electrochemically modified polycrystalline platinum surfaces has been accomplished through the use of four major electrochemical techniques. These were chronoamperometry, chronopotentiommetry, cyclic voltammetry, and linear sweep voltammetry. A systematic study on the under-potential deposition of several transition metals has been performed. The most interesting of these were: Ag, Cu, Cd, and Pb. It was determined, by subjecting the platinum electrode surface to a single potential scan between {minus}0.24 and +1.25 V{sub SCE} while stirring the solution, that the electrocatalytic activity would be regenerated. As a consequence of this study, a much simpler method for producing ultra high purity water from acidic permanganate has been developed. This method results in water that surpasses the water produced by pyrocatalytic distillation. It has also been seen that the wettability of polycrystalline platinum surfaces is greatly dependent on the quantity of oxide present. Oxide-free platinum is hydrophobic and gives a contact angle in the range of 55 to 62 degrees. We have also modified polycrystalline platinum surface with the electrically conducting polymer poly-{rho}-phenylene. This polymer is very stable in dilute sulfuric acid solutions, even under applied oxidative potentials. It is also highly resistant to electrochemical hydrogenation. The wettability of the polymer modified platinum surface is severely dependent on the choice of supporting electrolyte chosen for the electrochemical polymerization. Tetraethylammonium tetrafluoroborate produces a film that is as hydrophobic as Teflon, whereas tetraethylammonium perchlorate produces a film that is more hydrophilic than oxide-free platinum.

Krebs, L.C.; Ishida, Takanobu.

1991-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Unified description of screened modified gravity  

Science Journals Connector (OSTI)

We consider modified gravity models driven by a scalar field whose effects are screened in high density regions due to the presence of nonlinearities in its interaction potential and/or its coupling to matter. Our approach covers chameleon, f(R) gravity, dilaton and symmetron models and allows a unified description of all these theories. We find that the dynamics of modified gravity are entirely captured by the time variation of the scalar field mass and its coupling to matter evaluated at the cosmological minimum of its effective potential, where the scalar field has sat since an epoch prior to big bang nucleosynthesis. This new parametrization of modified gravity allows one to reconstruct the potential and coupling to matter and therefore to analyze the full dynamics of the models, from the scale dependent growth of structures at the linear level to nonlinear effects requiring N-body simulations. This procedure is illustrated with explicit examples of reconstruction for chameleon, dilaton, f(R) and symmetron models.

Philippe Brax; Anne-Christine Davis; Baojiu Li; Hans A. Winther

2012-08-08T23:59:59.000Z

322

Rheological Modifier Testing with DWPF Process Slurries  

SciTech Connect

Rheological modification agents were tested on simulated SRAT and SME products to determine if a suitable agent could be found for the DWPF process slurries. The agents tested were dispersants that lower the rheological properties of slurries by preventing agglomerization. Dolapix CE64, an ethylene glycol, and Disperse-Ayd W28, a polyacrylate, were the most effective dispersants tested. Further evaluation and testing should be performed on Dolapix CE64 and Disperse-Ayd W28 to determine if implementation is possible in DWPF. The initial phase of future work will include optimization of the rheology modifier by the Illinois Institute of Technology (IIT) and development of a maximum concentration limit for the rheology modifiers. IIT has been commissioned to evaluate the properties of these chemicals to determine if the chemical makeup can be optimized to enhance the properties of these modifiers. An initial concentration limit based upon the DWPF flammability limit and other constraints should be calculated to determine the potential downstream impacts.

MICHAEL, STONE

2004-02-01T23:59:59.000Z

323

N-soliton solutions to the modified Boussinesq equation  

Science Journals Connector (OSTI)

Searching for exact solutions to nonlinear evolution equations is a very important and interesting work in nonlinear science. In this paper, the modified Boussinesq equation is derived from the modified Gel ... ...

Qiong Li ? ?; Tie-cheng Xia ???

2009-12-01T23:59:59.000Z

324

Modified Van der Waals theory of fluid interfaces  

Science Journals Connector (OSTI)

A modified version of the Van der Waals theory of fluid interfaces is presented. The modified theory is shown to retain the qualitative simplicity of the original theory while yielding a much more quantitative description of fluid properties.

Vito Bongiorno and H. Ted Davis

1975-11-01T23:59:59.000Z

325

Testing of the Modified Anomalous Diffraction Approximation with...  

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

y mix and mix regarding the P-D power laws is analogous to this procedure. Testing of Modified ADA Modified ADA has already been tested with regard to SD extinction...

326

Direct liquefaction proof-of-concept program. Topical report  

SciTech Connect

This report presents the results of work conducted under the DOE Proof-of-Concept Program in direct coal liquefaction at Hydrocarbon Technologies, Inc. in Lawrenceville, New Jersey, from February 1994 through April 1995. The work includes modifications to HRI`s existing 3 ton per day Process Development Unit (PDU) and completion of the second PDU run (POC Run 2) under the Program. The 45-day POC Run 2 demonstrated scale up of the Catalytic Two-Stage Liquefaction (CTSL Process) for a subbituminous Wyoming Black Thunder Mine coal to produce distillate liquid products at a rate of up to 4 barrels per ton of moisture-ash-free coal. The combined processing of organic hydrocarbon wastes, such as waste plastics and used tire rubber, with coal was also successfully demonstrated during the last nine days of operations of Run POC-02. Prior to the first PDU run (POC-01) in this program, a major effort was made to modify the PDU to improve reliability and to provide the flexibility to operate in several alternative modes. The Kerr McGee Rose-SR{sup SM} unit from Wilsonville, Alabama, was redesigned and installed next to the U.S. Filter installation to allow a comparison of the two solids removal systems. The 45-day CTSL Wyoming Black Thunder Mine coal demonstration run achieved several milestones in the effort to further reduce the cost of liquid fuels from coal. The primary objective of PDU Run POC-02 was to scale-up the CTSL extinction recycle process for subbituminous coal to produce a total distillate product using an in-line fixed-bed hydrotreater. Of major concern was whether calcium-carbon deposits would occur in the system as has happened in other low rank coal conversion processes. An additional objective of major importance was to study the co-liquefaction of plastics with coal and waste tire rubber with coal.

Comolli, A.G.; Lee, L.K.; Pradhan, V.R. [and others

1996-12-01T23:59:59.000Z

327

Advanced Reactor Concepts Technical Review Panel Report | Department of  

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

Advanced Reactor Concepts Technical Review Panel Report Advanced Reactor Concepts Technical Review Panel Report Advanced Reactor Concepts Technical Review Panel Report This report documents the establishment of a technical review process and the findings of the Advanced Reactor Concepts (ARC) Technical Review Panel (TRP).1 The intent of the process is to identify R&D needs for viable advanced reactor concepts in order to inform DOE-NE R&D investment decisions. A goal of the process is to facilitate greater engagement between DOE and industry. The process involved establishing evaluation criteria, conducting a pilot review, soliciting concept inputs from industry entities, reviewing the concepts by TRP members and compiling the results. The eight concepts received from industry spanned a range of reactor types

328

Implementation of an organic rankine cycle in a biorefinery concept:.  

E-Print Network (OSTI)

??A bio-refinery concept was defined with the Aspen software. This bio-refinery concept turns water hyacinth into furfural and syngas. Biomass undergoes a hydrolysis at 180C (more)

Chognot, E.

2013-01-01T23:59:59.000Z

329

Application of Cooling Concepts to European Office Buildings  

Science Journals Connector (OSTI)

Plant Model and Cooling Concepts.... Five different cooling concepts are applied in order to cool the office building (Fig.7.3). All of them allow for free ventilation by opening windows. Four con...

Doreen E. Kalz; Jens Pfafferott

2014-01-01T23:59:59.000Z

330

Simulator Evaluation of Airborne Information for Lateral Spacing (AILS) Concept  

Science Journals Connector (OSTI)

The Airborne Information for Lateral Spacing (AILS) concept is designed to support independent parallel approach operations to runways spaced as close as 2500 ft. This report describes the AILS operational concept and the results of a ground-based flight ...

Abbott Terence S.; Elliott Dawn M.

2001-03-01T23:59:59.000Z

331

Efficiency in Health Care, Concepts of  

Science Journals Connector (OSTI)

Abstract This article gives an introduction to efficiency concepts as they are defined and measured in the field of health economics. The terms, technical efficiency, production efficiency, and allocative efficiency are defined. As efficiency is not ensured by market forces (due to health care market imperfections), there is a need for efficiency measurement. The reader is introduced to instruments for measuring efficiency: productivity analysis, cost-effectiveness analysis, and cost benefit analysis. The strengths and weaknesses of the methods are briefly discussed. This article should be seen as an introduction to subsequent articles on efficiency analysis, economic evaluation, and normative frameworks.

D. Gyrd-Hansen

2014-01-01T23:59:59.000Z

332

ATAC Process Proof of Concept Final Report  

SciTech Connect

Researchers at INL with funding from the Department of Energys Office of Electricity Delivery and Energy Reliability (DOE-OE) evaluated a novel approach for near real-time consumption of threat intelligence. Demonstration testing in an industry environment supported the development of this new process to assist the electric sector in securing their critical networks. This report provides the reader with an understanding of the methods used during this proof of concept project. The processes and templates were further advanced with an industry partner during an onsite assessment. This report concludes with lessons learned and a roadmap for final development of these materials for use by industry.

Bri Rolston; Sarah Freeman

2014-03-01T23:59:59.000Z

333

Evaluation of polyethylene-modified asphalt blends  

E-Print Network (OSTI)

Table 1. Viscosity of components of bitumens and polyolefins (after reference 3). Page 13 Table 2, Aging indices of modified and unmodified asphalts (Samples were aged at 140 'F at 20 atm. of pressure . . 24 Table 3. Table 4. Table 5. Viscosity... in poises as a function of time of aging for selected asphalts (Samples were aged at 140'F at room pressure). Comparison of mixture properties at optimum binder content as determined by the Marshall mixture design methodology (river gravel mixture and a...

Consuegra Granger, Fernando

1990-01-01T23:59:59.000Z

334

Chemically modified carbonic anhydrases useful in carbon capture systems  

SciTech Connect

The present disclosure relates to chemically modified carbonic anhydrase polypeptides and soluble compositions, homogenous liquid formulations comprising them. The chemically modified carbonic anhydrase polypeptides have improved properties relative to the same carbonic anhydrase polypeptide that is not chemically modified including the improved properties of increased activity and/or stability in the presence of amine compounds, ammonia, or carbonate ion. The present disclosure also provides methods of preparing the chemically modified polypeptides and methods of using the chemically modified polypeptides for accelerating the absorption of carbon dioxide from a gas stream into a solution as well as for the release of the absorbed carbon dioxide for further treatment and/or sequestering.

Novick, Scott; Alvizo, Oscar

2013-01-15T23:59:59.000Z

335

Chemically modified carbonic anhydrases useful in carbon capture systems  

DOE Patents (OSTI)

The present disclosure relates to chemically modified carbonic anhydrase polypeptides and soluble compositions, homogenous liquid formulations comprising them. The chemically modified carbonic anhydrase polypeptides have improved properties relative to the same carbonic anhydrase polypeptide that is not chemically modified including the improved properties of increased activity and/or stability in the presence of amine compounds, ammonia, or carbonate ion. The present disclosure also provides methods of preparing the chemically modified polypeptides and methods of using the chemically modified polypeptides for accelerating the absorption of carbon dioxide from a gas stream into a solution as well as for the release of the absorbed carbon dioxide for further treatment and/or sequestering.

Novick, Scott J; Alvizo, Oscar

2013-10-29T23:59:59.000Z

336

Clean Power Concepts | Open Energy Information  

Open Energy Info (EERE)

Clean Power Concepts Clean Power Concepts Place Vancouver, British Columbia, Canada Zip V6B 1G1 Sector Hydro, Solar, Wind energy Product Clean Power aims to be a one-stop shop for retail, business-to-business and e-commerce sales of wind, solar, and hydroelectric generators. The company plans to open its first retail branch in western Canada in June. Coordinates 49.26044°, -123.114034° 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":49.26044,"lon":-123.114034,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

337

ASME Material Challenges for Advanced Reactor Concepts  

SciTech Connect

This study presents the material Challenges associated with Advanced Reactor Concept (ARC) such as the Advanced High Temperature Reactor (AHTR). ACR are the next generation concepts focusing on power production and providing thermal energy for industrial applications. The efficient transfer of energy for industrial applications depends on the ability to incorporate cost-effective heat exchangers between the nuclear heat transport system and industrial process heat transport system. The heat exchanger required for AHTR is subjected to a unique set of conditions that bring with them several design challenges not encountered in standard heat exchangers. The corrosive molten salts, especially at higher temperatures, require materials throughout the system to avoid corrosion, and adverse high-temperature effects such as creep. Given the very high steam generator pressure of the supercritical steam cycle, it is anticipated that water tube and molten salt shell steam generators heat exchanger will be used. In this paper, the ASME Section III and the American Society of Mechanical Engineers (ASME) Section VIII requirements (acceptance criteria) are discussed. Also, the ASME material acceptance criteria (ASME Section II, Part D) for high temperature environment are presented. Finally, lack of ASME acceptance criteria for thermal design and analysis are discussed.

Piyush Sabharwall; Ali Siahpush

2013-07-01T23:59:59.000Z

338

Advanced Gasifier Pilot Plant Concept Definition  

SciTech Connect

This report presents results from definition of a preferred commercial-scale advanced gasifier configuration and concept definition for a gasification pilot plant incorporating those preferred technologies. The preferred commercial gasifier configuration was established based on Cost Of Electricity estimates for an IGCC. Based on the gasifier configuration trade study results, a compact plug flow gasifier, with a dry solids pump, rapid-mix injector, CMC liner insert and partial quench system was selected as the preferred configuration. Preliminary systems analysis results indicate that this configuration could provide cost of product savings for electricity and hydrogen ranging from 15%-20% relative to existing gasifier technologies. This cost of product improvement draws upon the efficiency of the dry feed, rapid mix injector technology, low capital cost compact gasifier, and >99% gasifier availability due to long life injector and gasifier liner, with short replacement time. A pilot plant concept incorporating the technologies associated with the preferred configuration was defined, along with cost and schedule estimates for design, installation, and test operations. It was estimated that a 16,300 kg/day (18 TPD) pilot plant gasifier incorporating the advanced gasification technology and demonstrating 1,000 hours of hot-fire operation could be accomplished over a period of 33 months with a budget of $25.6 M.

Steve Fusselman; Alan Darby; Fred Widman

2005-08-31T23:59:59.000Z

339

An intelligent, onboard signal processing payload concept  

SciTech Connect

Our approach to onboard processing will enable a quicker return and improved quality of processed data from small, remote-sensing satellites. We describe an intelligent payload concept which processes RF lightning signal data onboard the spacecraft in a power-aware manner. Presently, onboard processing is severely curtailed due to the conventional management of limited resources and power-unaware payload designs. Delays of days to weeks are commonly experienced before raw data is received, processed into a human-usable format, and finally transmitted to the end-user. We enable this resource-critical technology of onboard processing through the concept of Algorithm Power Modulation (APM). APM is a decision process used to execute a specific software algorithm, from a suite of possible algorithms, to make the best use of the available power. The suite of software algorithms chosen for our application is intended to reduce the probability of false alarms through postprocessing. Each algorithm however also has a cost in energy usage. A heuristic decision tree procedure is used which selects an algorithm based on the available power, time allocated, algorithm priority, and algorithm performance. We demonstrate our approach to power-aware onboard processing through a preliminary software simulation.

Shriver, P. M. (Patrick M.); Harikumar, J. (Jayashree); Briles, S. C. (Scott C.); Gokhale, M. (Maya)

2003-01-01T23:59:59.000Z

340

MODIFIED GRAVITY SPINS UP GALACTIC HALOS  

SciTech Connect

We investigate the effect of modified gravity on the specific angular momentum of galactic halos by analyzing the halo catalogs at z = 0 from high-resolution N-body simulations for a f(R) gravity model that meets the solar-system constraint. It is shown that the galactic halos in the f(R) gravity model tend to acquire significantly higher specific angular momentum than those in the standard {Lambda}CDM model. The largest difference in the specific angular momentum distribution between these two models occurs for the case of isolated galactic halos with mass less than 10{sup 11} h {sup -1} M {sub Sun }, which are likely least shielded by the chameleon screening mechanism. As the specific angular momentum of galactic halos is rather insensitive to other cosmological parameters, it can in principle be an independent discriminator of modified gravity. We speculate a possibility of using the relative abundance of low surface brightness galaxies (LSBGs) as a test of general relativity given that the formation of the LSBGs occurs in fast spinning dark halos.

Lee, Jounghun [Astronomy Program, Department of Physics and Astronomy, FPRD, Seoul National University, Seoul 151-747 (Korea, Republic of)] [Astronomy Program, Department of Physics and Astronomy, FPRD, Seoul National University, Seoul 151-747 (Korea, Republic of); Zhao, Gong-Bo [National Astronomy Observatories, Chinese Academy of Science, Beijing 100012 (China)] [National Astronomy Observatories, Chinese Academy of Science, Beijing 100012 (China); Li, Baojiu [Institute of Computational Cosmology, Department of Physics, Durham University, Durham DH1 3LE (United Kingdom)] [Institute of Computational Cosmology, Department of Physics, Durham University, Durham DH1 3LE (United Kingdom); Koyama, Kazuya, E-mail: jounghun@astro.snu.ac.kr [Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 3FX (United Kingdom)] [Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 3FX (United Kingdom)

2013-01-20T23:59:59.000Z

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


341

A Modified Efficiency Equation of Solar Collectors  

Science Journals Connector (OSTI)

Abstract This paper describes the derivation of a modified equation for solar collector efficiency that is expressed using the heating load term instead of the inlet fluid temperature term from the currently used linear collector efficiency equation. The parameters in the modified equation are estimated using test data measured for 14 days. In evaluation of the equation's validity, the calculated daily collector efficiency agrees well with the measured daily collector efficiency, with a correlation coefficient of 0.9110. The equation is also be expressed in another form by including the term for the shape of the hot water storage tank in the solar heating system. Collector efficiencies with parametric changes are calculated with the estimated parameters and compared with different global solar irradiance on solar collectors, daily average ambient temperature and heating loads per collector area. It would be necessary to estimate the parameters for better performance of the efficiency equation with more data from long-term system simulations at various operating conditions.

Kyoung-ho Lee; Nam-choon Baek

2014-01-01T23:59:59.000Z

342

Anomalous diffusion modifies solar neutrino fluxes  

E-Print Network (OSTI)

Density and temperature conditions in the solar core suggest that the microscopic diffusion of electrons and ions could be nonstandard: Diffusion and friction coefficients are energy dependent, collisions are not two-body processes and retain memory beyond the single scattering event. A direct consequence of nonstandard diffusion is that the equilibrium energy distribution of particles departs from the Maxwellian one (tails goes to zero more slowly or faster than exponentially) modifying the reaction rates. This effect is qualitatively different from temperature and/or composition modification: Small changes in the number of particles in the distribution tails can strongly modify the rates without affecting bulk properties, such as the sound speed or hydrostatic equilibrium, which depend on the mean values from the distribution. This mechanism can considerably increase the range of predictions for the neutrino fluxes allowed by the current experimental values (cross sections and solar properties) and can be used to reduce the discrepancy between these predictions and the solar neutrino experiments.

G. Kaniadakis; A. Lavagno; M. Lissia; P. Quarati

1997-10-16T23:59:59.000Z

343

Boron modified molybdenum silicide and products  

DOE Patents (OSTI)

A boron-modified molybdenum silicide material is disclosed having the composition comprising about 80 to about 90 weight % Mo, about 10 to about 20 weight % Si, and about 0.1 to about 2 weight % B and a multiphase microstructure including Mo{sub 5}Si{sub 3} phase as at least one microstructural component effective to impart good high temperature creep resistance. The boron-modified molybdenum silicide material is fabricated into such products as electrical components, such as resistors and interconnects, that exhibit oxidation resistance to withstand high temperatures in service in air as a result of electrical power dissipation, electrical resistance heating elements that can withstand high temperatures in service in air and other oxygen-bearing atmospheres and can span greater distances than MoSi{sub 2} heating elements due to improved creep resistance, and high temperature structural members and other fabricated components that can withstand high temperatures in service in air or other oxygen-bearing atmospheres while retaining creep resistance associated with Mo{sub 5}Si{sub 3} for structural integrity. 7 figs.

Meyer, M.K.; Akinc, M.

1999-02-02T23:59:59.000Z

344

Boron modified molybdenum silicide and products  

DOE Patents (OSTI)

A boron-modified molybdenum silicide material having the composition comprising about 80 to about 90 weight % Mo, about 10 to about 20 weight % Si, and about 0.1 to about 2 weight % B and a multiphase microstructure including Mo.sub.5 Si.sub.3 phase as at least one microstructural component effective to impart good high temperature creep resistance. The boron-modified molybdenum silicide material is fabricated into such products as electrical components, such as resistors and interconnects, that exhibit oxidation resistance to withstand high temperatures in service in air as a result of electrical power dissipation, electrical resistance heating elements that can withstand high temperatures in service in air and other oxygen-bearing atmospheres and can span greater distances than MoSi.sub.2 heating elements due to improved creep resistance, and high temperature structural members and other fabricated components that can withstand high temperatures in service in air or other oxygen-bearing atmospheres while retaining creep resistance associated with Mo.sub.5 Si.sub.3 for structural integrity.

Meyer, Mitchell K. (Idaho Falls, ID); Akinc, Mufit (Ames, IA)

1999-02-02T23:59:59.000Z

345

Applying Innovation System Concept in Agricultural Research for  

Open Energy Info (EERE)

Applying Innovation System Concept in Agricultural Research for Applying Innovation System Concept in Agricultural Research for Development: A learning module Jump to: navigation, search Tool Summary Name: Applying Innovation System Concept in Agricultural Research for Development: A learning module Agency/Company /Organization: International Livestock Research Institute Sector: Land Focus Area: Agriculture Topics: Policies/deployment programs Resource Type: Training materials Website: mahider.ilri.org/bitstream/10568/167/1/Innovation_System_Agric_LM.pdf Applying Innovation System Concept in Agricultural Research for Development: A learning module Screenshot References: Applying Innovation System Concept in Agricultural Research for Development: A learning module[1] Preface "Sustained agricultural growth requires, among others, increased

346

Range of blanket concepts from near term solutions to advanced concepts  

E-Print Network (OSTI)

a considerable development risk. Therefore, the selection of blanket concepts depends on the overall strategy which can be operated safely, with minimum impact on the environment, and at an acceptable cost to the environment, and; Á/ can generate electricity at acceptable costs. The evaluation of whether or not and how

Raffray, A. René

347

Integrated Concepts and Research Corporation ICRC | Open Energy Information  

Open Energy Info (EERE)

Integrated Concepts and Research Corporation ICRC Integrated Concepts and Research Corporation ICRC Jump to: navigation, search Name Integrated Concepts and Research Corporation (ICRC) Place Madison Heights, Michigan Zip 48071 Sector Services Product Engineering and technical services company. References Integrated Concepts and Research Corporation (ICRC)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Integrated Concepts and Research Corporation (ICRC) is a company located in Madison Heights, Michigan . References ↑ "Integrated Concepts and Research Corporation (ICRC)" Retrieved from "http://en.openei.org/w/index.php?title=Integrated_Concepts_and_Research_Corporation_ICRC&oldid=347003"

348

Tribal Renewable Energy Advanced Course: Project Development Concepts |  

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

Concepts Concepts Tribal Renewable Energy Advanced Course: Project Development Concepts Watch the DOE Office of Indian Energy renewable energy course entitled "Tribal Renewable Energy Project Development: Advanced Concept Topics" by clicking on the .swf file below. You can also download a PDF of the PowerPoint slides. This course provides in-depth information on project development concepts for renewable energy projects on tribal lands, including: Risk and uncertainty Tribal project roles Policies and incentives See the full list of DOE Office of Indian Energy educational webinars and provide your feedback on the National Training & Education Resource (NTER) website. Renewable Energy Project Development: Advanced Concept Topics repd_project_development_concepts_lowder.swf

349

Energy Star Concepts for Highway Vehicles  

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

37 37 Energy Star Concepts for Highway Vehicles June 2003 David L. Greene Oak Ridge National Laboratory Robert C. Gibson The University of Tennessee K. G. Duleep Energy and Environmental Analysis, Inc. DOCUMENT AVAILABILITY Reports produced after January 1, 1996, are generally available free via the U.S. Department of Energy (DOE) Information Bridge: Web site: http://www.osti.gov/bridge Reports produced before January 1, 1996, may be purchased by members of the public from the following source: National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 Telephone: 703-605-6000 (1-800-553-6847) TDD: 703-487-4639 Fax: 703-605-6900 E-mail: info@ntis.fedworld.gov Web site: http://www.ntis.gov/support/ordernowabout.htm

350

Fast Track nuclear thermal propulsion concept  

Science Journals Connector (OSTI)

The objective of the Space Exploration Initiative (America at the Threshold... 1991) is the exploration of Mars by man in the second decade of the 21st century. The NASA Fast Track approach (NASA?LeRC Presentation 1992) could accelerate the manned exploration of Mars to 2007. NERVA?derived nuclear propulsion represents a viable near?term technology approach to accomplish the accelerated schedule. Key milestones in the progression to the manned Mars mission are (1) demonstration of TRL?6 for the man?rateable system by 1999 (2) a robotic lunar mission by 2000 (3) the first cargo mission to Mars by 2005 and (4) the piloted Mars mission in 2007. The Rocketdyne?Westinghouse concept for nuclear thermal propulsion to achieve these milestones combines the nuclear reactor technology of the Rover/NERVA programs and the state?of?the?art hardware designs from hydrogen?fueled rocket engine successes like the Space Shuttle Main Engine (SSME).

Richard A. Johnson; Herbert R. Zweig; Martin H. Cooper; Jack Wett Jr.

1993-01-01T23:59:59.000Z

351

Fast Track'' nuclear thermal propulsion concept  

SciTech Connect

The objective of the Space Exploration Initiative ( America at the Threshold...,'' 1991) is the exploration of Mars by man in the second decade of the 21st century. The NASA Fast Track'' approach (NASA-LeRC Presentation, 1992) could accelerate the manned exploration of Mars to 2007. NERVA-derived nuclear propulsion represents a viable near-term technology approach to accomplish the accelerated schedule. Key milestones in the progression to the manned Mars mission are (1) demonstration of TRL-6 for the man-rateable system by 1999, (2) a robotic lunar mission by 2000, (3) the first cargo mission to Mars by 2005, and (4) the piloted Mars mission in 2007. The Rocketdyne-Westinghouse concept for nuclear thermal propulsion to achieve these milestones combines the nuclear reactor technology of the Rover/NERVA programs and the state-of-the-art hardware designs from hydrogen-fueled rocket engine successes like the Space Shuttle Main Engine (SSME).

Johnson, R.A.; Zweig, H.R. (Rocketdyne Division, Rockwell International Corporation, 6633 Canoga Avenue, P.O. Box 7922, Canoga Park, California 91309-7922 (United States)); Cooper, M.H.; Wett, J. Jr. (Westinghouse Electric Corporation, Post Office Box 158, Madison, Pennsylvania 15663 (United States))

1993-01-10T23:59:59.000Z

352

Values and the quantum conception of man  

SciTech Connect

Classical mechanics is based upon a mechanical picture of nature that is fundamentally incorrect. It has been replaced at the basic level by a radically different theory: quantum mechanics. This change entails an enormous shift in one`s basic conception of nature, one that can profoundly alter the scientific image of man himself. Self-image is the foundation of values, and the replacement of the mechanistic self-image derived from classical mechanics by one concordant with quantum mechanics may provide the foundation of a moral order better suited to today`s times, a self-image that endows human life with meaning, responsibility, and a deeper linkage to nature as a whole.

Stapp, H.P.

1995-06-01T23:59:59.000Z

353

Direct liquefaction proof-of-concept program  

SciTech Connect

The POC Bench Option Project (PB-Series) is geared to evaluate different novel processing concepts in catalytic direct coal liquefaction and coprocessing of organic wastes such as plastics, heavy resids, waste oils, and ligno-cellulose wastes with coal. The new ideas being explored in this program include using novel dispersed slurry catalysts and combinations of dispersed and supported catalysts (hybrid mode), and coprocessing of coal with waste plastics, low quality resids, waste oils, and ligno-cellulosic wastes, etc. The primary objective of bench run PB-07 was to study the impact of dispersed catalyst composition and loading upon the direct liquefaction performance of a high volatile bituminous Illinois No. 6 coal. The run was carried out for 20 operating days (including the four days used for the production of O-6 bottoms material for West Virginia University), spanning over five process conditions. Results are reported.

Comolli, A.G.; Zhou, P.Z.; Lee, T.L.K.; Hu, J.; Karolkiewicz, W.F.; Popper, G.

1997-12-01T23:59:59.000Z

354

EXPLORATORY RESEARCH ON NOVEL COAL LIQUEFACTION CONCEPT  

SciTech Connect

Task 4 experimental testing was continued. Six first-stage one-liter autoclave tests were made at reduced severity conditions. A device to reduce the in-line filter diameter proved difficult to use and resulted in little usable filtration data. Its use was discontinued. The second-stage reactor system was overhauled and used to process Wilsonville Run 263J resid. Resid conversion and yields were commensurate with expected results. The economic and engineering evaluation of the Novel Concept process, based on Task 2 and Task 3 experimental data, was begun. The design of a conceptual commercial plant was completed. The economic and engineering evaluation illuminated components of the process operating and capital cost estimates which, if appropriately altered, could significantly reduce the cost of product (gasoline) from the process. This provided direction for the Task 4 experimental program.

S.D. Brandes; R.A. Winschel

1997-02-26T23:59:59.000Z

355

New Concepts For High Power ICRF Antennas  

SciTech Connect

This paper presents new concepts for Ion Cyclotron Heating antennas based on cascaded sequences of tuned radiating structures. It is shown that, in large arrays, such as the ones proposed for fusion reactors applications, these schemes offer, in principle, a number of desirable features, such as operation at power density significantly higher than currently adopted systems, at equal maximum voltage and array geometry, simple mechanical layout, suitable for water cooling, a compact impedance tuning system, passive decoupling of the array elements, single ended or balanced feed from two power sources. The antenna layout also allows the remote, real time measurement of the complex impedance of the radiating elements and the detection, location, and measurement of the complex admittance of arcs occurring anywhere in the structure, as discussed in [1].

Bosia, G. [Department of Physics University of Turin (Italy)

2011-12-23T23:59:59.000Z

356

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network (OSTI)

test systems, Renewable and Sustainable Energy Reviews, 15,a review, Renewable and Sustainable Energy Reviews, 15, pp.survey, Renewable and Sustainable Energy Reviews. Bossart,

Marnay, Chris

2014-01-01T23:59:59.000Z

357

Sandia National Laboratories: Building a Microgrid  

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

cold thermal storage. "All will interconnect with our building through a control room and building management system," Barrera said. A number of Japanese companies are...

358

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network (OSTI)

Environmental Energy Technologies Division Lawrence Berkeley18 Recommendation 3: Match technology to end-use31 Illinois Institute of Technology Project (a perfect power

Marnay, Chris

2014-01-01T23:59:59.000Z

359

International Microgrid Assessment: Governance, Incentives, and Experience  

E-Print Network (OSTI)

Marnay Environmental Energy Technologies Division, Lawrencedemand response payments Technology R&D funding; Land ofpayments using policy and technology Figure 2. Overview of

Zhou, Nan

2014-01-01T23:59:59.000Z

360

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network (OSTI)

Future in Telligent power grids: Analysis of the vision inof common coupling Figure 3: Power grid, from generation towas part of the Regional Power Grid with Renewable Energy

Marnay, Chris

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network (OSTI)

energy resources, such as small hydro, wind, biomass, andSolar PV Biomass Wind Small hydro Figure 6: Chinas feed-in

Marnay, Chris

2014-01-01T23:59:59.000Z

362

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network (OSTI)

Chinas current feed-in tariff policies encourages theof tariff, if not a feed-in tariff)? The opportunities forhome to a specific feed-in tariff policy for distributed

Marnay, Chris

2014-01-01T23:59:59.000Z

363

International Microgrid Assessment: Governance, Incentives, and Experience  

E-Print Network (OSTI)

Policy Lower costs; RPS, CHP, DG targets; Electricityon renewable energy and CHP (Chevron Energy Solutions), andcontrol system, now CHP Secrets of success: Involvement and

Zhou, Nan

2014-01-01T23:59:59.000Z

364

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network (OSTI)

19 Recommendation 4: Integrate energy functions: CHP and4: Integrate energy functions: CHP and CCHP Demands forand power technologies (CHP) as well as combined cooling,

Marnay, Chris

2014-01-01T23:59:59.000Z

365

International Microgrid Assessment: Governance, Incentives, and Experience  

E-Print Network (OSTI)

Technologies used: fuel cell, gas gensets, batteries, solarTechnologies used: Iron-phosphate battery, fuel cell, back up diesel generators, solar

Zhou, Nan

2014-01-01T23:59:59.000Z

366

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network (OSTI)

MW gas turbines, one 3 MW steam turbine, a 1.2 MW solar PVMW gas turbines, one 3 MW steam turbine, and a 1.2 MW solar-

Marnay, Chris

2014-01-01T23:59:59.000Z

367

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network (OSTI)

resources, (such as distributed generators, storage devices,distributed energy resources (DER) to the grid, specifying standard interconnection, operating, and metering requirements for DER generators.

Marnay, Chris

2014-01-01T23:59:59.000Z

368

AC-DC Microgrid Optimal Power Flow.  

E-Print Network (OSTI)

??Electricity market deregulation has opened the door for novel electricity production schemes within the existing central production paradigm that dominates the electricity power industry. The (more)

Duggal, Inderjeet (Author)

2012-01-01T23:59:59.000Z

369

How Microgrids Work | Department of Energy  

Office of Environmental Management (EM)

National Wind Technology Center in Colorado. | Photo courtesy of the National Renewable Energy Lab. Allison Lantero Allison Lantero Digital Content Specialist, Office of Public...

370

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network (OSTI)

in meeting its renewable energy goals in a cost effective4: Cost sharing of Department of Energys Renewable andrenewable energy on a large scale with acceptable cost and

Marnay, Chris

2014-01-01T23:59:59.000Z

371

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network (OSTI)

some policies for smaller scale solar PV projects, such aspolicies that encourage the development of renewable energy resources, such as small hydro, wind, biomass, and solar

Marnay, Chris

2014-01-01T23:59:59.000Z

372

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network (OSTI)

include: high reliability distribution system, intelligentlocal distribution grid (with 99.9% reliability) is enoughReliability Efficiency Clean energy Local control Energy security Technology providers Transmission and distribution

Marnay, Chris

2014-01-01T23:59:59.000Z

373

Sandia National Laboratories: advanced microgrid system  

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

Doppler Velocimeter EC Top Publications A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study Nonlinear Time-Domain...

374

Auxiliary fields representation for modified gravity models  

SciTech Connect

We consider tensor-multiscalar representations for several types of modified gravity actions. The first example is the theory with the action representing an arbitrary smooth function of the scalar curvature R and {open_square}R, the integrand of the Gauss-Bonnet term and the square of the Weyl tensor. We present a simple procedure leading to an equivalent theory of a space-time metric and four auxiliary scalars and especially discuss the calibration of a cosmological constant and the condition of the existence of de Sitter-like solutions in the case of an empty universe. The condition for obtaining a smaller number of independent scalar fields is derived. The second example is the Eddington-like gravity action. In this case we show, in particular, the equivalence of the theory to general relativity with the cosmological constant term, with or without use of the first-order formalism, and also discuss some possible generalizations.

Rodrigues, Davi C.; Salles, Filipe de O; Shapiro, Ilya L.; Starobinsky, Alexei A. [Departamento de Fisica, CCE, Universidade Federal do Espirito Santo, 29075-910, Vitoria, ES (Brazil); Departamento de Fisica, ICE, Universidade Federal de Juiz de Fora, 36036-330, MG (Brazil); Landau Institute for Theoretical Physics, Moscow, 119334 (Russian Federation); RESCEU, Graduate School of Science, University of Tokyo, Tokyo 113-0033 (Japan)

2011-04-15T23:59:59.000Z

375

Dynamical friction in modified Newtonian dynamics  

E-Print Network (OSTI)

We have tested a previous analytical estimate of the dynamical friction timescale in Modified Newtonian Dynamics (MOND) with fully non-linear N-body simulations. The simulations confirm that the dynamical friction timescale is significantly shorter in MOND than in equivalent Newtonian systems, i.e. systems with the same phase-space distribution of baryons and additional dark matter. An apparent conflict between this result and the long timescales determined for bars to slow and mergers to be completed in previous N-body simulations of MOND systems is explained. The confirmation of the short dynamical-friction timescale in MOND underlines the challenge that the Fornax dwarf spheroidal poses to the viability of MOND.

C. Nipoti; L. Ciotti; J. Binney; P. Londrillo

2008-02-08T23:59:59.000Z

376

Validation, Proof-of-Concept, and Postaudit of the Groundwater Flow and Transport Model of the Project Shoal Area  

SciTech Connect

The groundwater flow and radionuclide transport model characterizing the Shoal underground nuclear test has been accepted by the State of Nevada Division of Environmental Protection. According to the Federal Facility Agreement and Consent Order (FFACO) between DOE and the State of Nevada, the next steps in the closure process for the site are then model validation (or postaudit), the proof-of-concept, and the long-term monitoring stage. This report addresses the development of the validation strategy for the Shoal model, needed for preparing the subsurface Corrective Action Decision Document-Corrective Action Plan and the development of the proof-of-concept tools needed during the five-year monitoring/validation period. The approach builds on a previous model, but is adapted and modified to the site-specific conditions and challenges of the Shoal site.

Ahmed Hassan

2004-09-01T23:59:59.000Z

377

State of the practice: Design and construction of asphalt paving materials with crumb-rubber modifier. Final report  

SciTech Connect

The document is a comprehensive overview of the terminology, processes, products, and applications of crumb rubber modifier (CRM) technology. The technology includes any use of scrap tire rubber in asphalt paving materials. In general, CRM technology can be divided into two categories--the wet process and the dry process. When CRM is incorporated into an asphalt paving material, it will modify the properties of the binder (asphalt rubber) and/or act as a rubber aggregate (rubber modified hot mix asphalt). The five concepts for using CRM discussed in the report are McDonald, PlusRide, generic dry, chunk rubber asphalt concrete, and continuous blending asphalt rubber. There are two principal unresolved engineering issues related to the use of CRM in asphalt paving materials. On the national level, the ability to recycle asphalt paving mixes containing CRM has not been demonstrated. At the State and local levels, these modified asphalt mixes must be field evaluated to establish expected levels of performance. The appendices provide guidelines for material specifications, mix design, and construction specifications. An experimental work plan for monitoring performance and a stack emission testing program are also included.

Heitzman, M.A.

1992-05-01T23:59:59.000Z

378

Improving a Pre-Combustion CCS Concept in Gas Turbine Combined Cycle for CHP Production  

Science Journals Connector (OSTI)

Abstract This paper describes modifications to improve the feasibility of a pre-combustion CCS concept for a gas turbine combined cycle. A natural gas-fired greenfield combined heat and power (CHP) plant equipped with pre-combustion capture was used as a base case, for which various improvement options were identified, assessed and selected. The base case was modified using the selected improvement options, after which the investment costs were re-evaluated. The results showed that the investment cost can be reduced with 8% by excluding the pre-reformer and the low temperature water-gas-shift reactor from the reforming process. The exclusion of the pre-reformer did not affect the performance of the plant, but the exclusion of the low temperature water-gas-shift reactor led to higher CO2 emissions.

Marjut S. Suomalainen; Antti Arasto; Sebastian Teir; Sari Siitonen

2013-01-01T23:59:59.000Z

379

Superconducting switch concept applied to superconducting undulator phase-error correction  

SciTech Connect

Superconducting undulator (SCU) technology has the potential to significantly enhance the performance of synchrotron radiation sources for storage ring and FEL applications. Since 2002, our team at Lawrence Berkeley National Laboratory has been performing R and D on superconducting undulators, including the fabrication of three Nb{sub 3}Sn prototypes. We have demonstrated experimentally the possibility to provide the prototype with trim coils that could be used for phase error correction. The research effort that we report here demonstrates the possibility to add degrees of freedom to the field correction provided by these coils in a cryogenic environment. By means of bridge of superconducting switches, we can modify the current direction through a trim coil. Here we describe the design of the experimental bridge we fabricated, the results we obtained and finally the generalized concept one could plan to apply to correct the phase errors with trim coils connected to a network of superconducting bridges.

Madur, A.; Trillaud, F.; Dietderich, D.; Marks, S.; Prestemon, S.; Schlueter, R. [LBNL, 1 Cyclotron Road, BERKELEY, CA, 94720 (United States)

2010-06-23T23:59:59.000Z

380

Non-Noether symmetries of the modified Boussinesq equations  

Science Journals Connector (OSTI)

We investigate a one-parameter non-Noether symmetry group of the modified Boussinesq equations and show that this symmetry naturally...

G. Chavchanidze

2009-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Further comparisons between the conventional and the modified Schwarzschild objectives  

Science Journals Connector (OSTI)

The performance of the modified Schwarzschild objective configuration in comparison with the ordinary ... tolerances of the two configurations to lateral and mirrors axial misalignments. Also, the nonconcentric

S. Bollanti; P. Di Lazzaro; F. Flora; L. Mezi; D. Murra; A. Torre

2008-04-01T23:59:59.000Z

382

Generalized second law in the modified theory of gravity  

SciTech Connect

In the context of modified theory of gravity [f(R) gravity], we try to study the conditions needed for validity of the generalized second law.

Mohseni Sadjadi, H. [Department of Physics, University of Tehran, P.O. Box 14395-547, Tehran 14399-55961 (Iran, Islamic Republic of)

2007-11-15T23:59:59.000Z

383

Model test and simulation of modified spar type floating offshore wind turbine with three catenary mooring lines  

Science Journals Connector (OSTI)

Korea is a peninsula which is surrounded by the Yellow Sea (shallow sea) the southern sea and the East Sea (deep sea). These circumstances always make us consider that a platform could have good motion performances in both shallow and deep seas. In this paper the typical spar type platform of the Offshore Code Comparison Collaboration Hywind Floating Offshore Wind Turbine (FOWT) has been modified and a new concept FOWT platform is suggested for both seas. Its motion performances are evaluated by both 1:80 scale model tests and full scale numerical simulations.

2014-01-01T23:59:59.000Z

384

Renewable Energy Concepts Solar Inc REC Solar | Open Energy Information  

Open Energy Info (EERE)

Concepts Solar Inc REC Solar Concepts Solar Inc REC Solar Jump to: navigation, search Name Renewable Energy Concepts Solar Inc (REC Solar) Place San Luis Obispo, California Zip 93401 Sector Solar Product US-based solar system installer, specialising in grid-tied installation and servicing mainly California, Colorado, and New Jersey. Not in any way affiliated with Norwegian integrated PV manufacturer REC, which has a division called REC Solar. References Renewable Energy Concepts Solar Inc (REC Solar)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Renewable Energy Concepts Solar Inc (REC Solar) is a company located in San Luis Obispo, California . References ↑ "Renewable Energy Concepts Solar Inc (REC Solar)"

385

Repository Reference Disposal Concepts and Thermal Load Management Analysis  

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

Repository Reference Disposal Concepts and Thermal Load Management Repository Reference Disposal Concepts and Thermal Load Management Analysis Repository Reference Disposal Concepts and Thermal Load Management Analysis A disposal concept consists of three parts: waste inventory (7 waste types examined), geologic setting (e.g., clay/shale, salt, crystalline, other sedimentary), and the engineering concept of operations (range of generic operational concepts examined). Two major categories for waste package emplacement modes are identified: 1) "open" where extended ventilation can remove heat for many years following waste emplacement underground; and 2) "enclosed" modes for clay/shale and salt media where waste packages are emplaced in direct or close contact with natural or engineered materials which may have temperature limits that constrain thermal

386

Concept:U.S. National Software Tools | Open Energy Information  

Open Energy Info (EERE)

Concept Concept Edit History Facebook icon Twitter icon » Concept:U.S. National Software Tools Jump to: navigation, search Description of concept "U.S. National Software Tools"RDF feed [[Category:Tools]] [[Developer.IsDOELab::true]] Pages of concept "U.S. National Software Tools" Showing 190 pages belonging to that concept. A A Policymaker's Guide to Feed-In Tariff Policy Design Advanced Process Engineering Co-Simulator (APECS) Africa - Technical Potential of Solar Energy to Address Energy Poverty and Avoid GHG Emissions Alternative Fuel and Advanced Technology Vehicles Pilot Program Emissions Benefit Tool Alternative Fuels and Advanced Vehicles Data Center - Codes and Standards Resources Alternative Fuels and Advanced Vehicles Data Center - Federal and State Incentives and Laws Database

387

Repository Reference Disposal Concepts and Thermal Load Management Analysis  

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

Repository Reference Disposal Concepts and Thermal Load Management Repository Reference Disposal Concepts and Thermal Load Management Analysis Repository Reference Disposal Concepts and Thermal Load Management Analysis A disposal concept consists of three parts: waste inventory (7 waste types examined), geologic setting (e.g., clay/shale, salt, crystalline, other sedimentary), and the engineering concept of operations (range of generic operational concepts examined). Two major categories for waste package emplacement modes are identified: 1) "open" where extended ventilation can remove heat for many years following waste emplacement underground; and 2) "enclosed" modes for clay/shale and salt media where waste packages are emplaced in direct or close contact with natural or engineered materials which may have temperature limits that constrain thermal

388

Equipment concepts for dry intercask transfer of spent fuel  

SciTech Connect

This report documents the results of a study of preconceptual design and analysis of four intercask transfer concepts. The four concepts are: a large shielded cylindrical turntable that contains an integral fuel handling machine (turntable concept); a shielded fuel handling machine under which shipping and storage casks are moved horizontally (shuttle concept); a small hot cell containing equipment for transferring fuel between shipping and storage casks (that enter and leave the cell on carts) in a bifurcated trench (trench concept); and a large hot cell, shielded by an earthen berm, that houses equipment for handling fuel between casks that enter and leave the cell on a single cart (igloo concept). The casks considered in this study are most of the transport casks currently operable in the USA, and the storage casks designated REA-2023 and GNS Castor-V. Exclusive of basic services assumed to be provided at the host site, the design and capital costs are estimated to range from $9 to $13 million. The portion of capital costs for portable equipment (for potential later use at another site) was estimated to range from 70% to 98%, depending on the concept. Increasing portability from a range of 70 to 90% to 98% adds $2 to 4 million to the capital costs. Operating costs are estimated at about $2 million/year for all concepts. Implementation times range from about 18 months for the more conventional systems to 40 months for the more unique systems. Times and costs for relocation to another site are 10 to 14 months and about $1 million, plus shipping costs and costs of new construction at the new site. All concepts have estimated capacities for fuel transfer at least equal to the criterion set for this study. Only the hot cell concepts have capability for recanning or repair of canisters. Some development is believed to be required for the turntable and shuttle concepts, but none for the other two concepts.

Schneider, K.J.

1983-07-01T23:59:59.000Z

389

Power Supply Concept for Mobile Robots in Bionic Assembly System  

Science Journals Connector (OSTI)

Abstract This paper presents a concept for autonomous energy supply for mobile robots in Bionic Assembly System (BAS). The main idea of this concept is battery swapping and charging station for mobile robots. Emphasis was placed on simplicity, safety and efficiency. Main focuses of this paper are detailed description of operation, battery charging process with implemented battery management system (BMS), mobile robot requirements and its implementation into the existing BAS concept.

Miroslav Puskaric; Ilya Kukushkin; Damir Haskovic

2014-01-01T23:59:59.000Z

390

Emergency Management Concepts, Existing Guidance, and Changes | Department  

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

Emergency Management Concepts, Existing Guidance, and Changes Emergency Management Concepts, Existing Guidance, and Changes Emergency Management Concepts, Existing Guidance, and Changes Wednesday, September 19 Presenter: David Freshwater, Emergency Management Specialist, Office of Emergency Management, National Nuclear Security Administration Topics Covered: Emergency Management is last line of defense - have to consider when safety controls fail Longstanding consideration and analysis of "beyond design basis" Since 1991, Emergency Planning Hazards Assessments have analyzed a spectrum of events ◦ Low consequence/High probability ◦ High consequence/Low probability Have not had a "firm" upper bound Emergency Management Concepts, Existing Guidance, and Changes More Documents & Publications Summary of Emergency Management Results from Pilot Evaluations

391

Ultrafast Carrier RelaxationProcesses in Advanced Concept Solar Cells  

Science Journals Connector (OSTI)

We discuss short time carrier relaxation in advanced concept solar cells conditions using ensemble Monte Carlo (EMC) simulation coupled with rate equation and thermodynamic models, to...

Goodnick, Stephen M; Honsberg, Christiana; Zou, Yongjie

392

Cancer Risk among Children Born after Assisted Conception  

Science Journals Connector (OSTI)

...of 26,692 children born after assisted conception in Sweden between 1982 and 2005. A total of 47 cancers (excluding histiocytosis) were observed in this cohort, which had a higher risk of childhood cancer than did children conceived without assisted conception during the same period (odds ratio after... In a large study using registry data from Britain, overall cancer incidence was not increased among children born after assisted conception. Assisted conception was associated with an increased risk of hepatoblastoma and rhabdomyosarcoma, but the absolute risks were small.

Williams C.L.; Bunch K.J.; Stiller C.A.

2013-11-07T23:59:59.000Z

393

Concept for Reducing Hall Thruster Chamber Wall Erosion with...  

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

Concept for Reducing Hall Thruster Chamber Wall Erosion with Lithium Vapor Shielding. Hall thrusters have been established as a compact and reliable means for satellite...

394

Development of a low swirl injector concept for gas turbines  

E-Print Network (OSTI)

Injector Concept for Gas Turbines Robert K. Cheng * , Scottconcept for ultra- low NO x gas turbines. Low-swirl flamevirtually every industrial gas turbine manufacturer to meet

Cheng, R.K.; Fable, S.A.; Schmidt, D.; Arellano, L.; Smith, K.O.

2000-01-01T23:59:59.000Z

395

Concept Testing and Development at the Raft River Geothermal...  

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

3 4.1.2 Concept Testing and Development at the Raft River Geothermal Field, Idaho Presentation Number: 007 Investigator: Moore, Joseph (University of Utah) Objectives: Develop and...

396

High Temperature Superconductor Cable Concepts for Fusion Magnets.  

E-Print Network (OSTI)

??Three concepts of high temperature superconductor cables carrying kA currents (RACC, CORC and TSTC) are investigated, optimized and evaluated in the scope of their applicability (more)

Barth, Christian

2013-01-01T23:59:59.000Z

397

Chapter 5: Basic Concepts for Clean Energy Unsecured Lending...  

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

Funds revfinalv3ch05basicconceptsdec9.pdf More Documents & Publications Path to Self-Sustainability Chapter 5. Basic Concepts for Clean Energy Unsecured Lending and Loan Loss...

398

Tribal Renewable Energy Advanced Course: Project Financing Concepts  

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

Watch the DOE Office of Indian Energy's advanced renewable energy course entitled "Tribal Renewable Energy Project Development: Advanced Financing Concepts" by clicking on the .swf link below. You...

399

Concept for Management of the Future Electricity System (Smart...  

Open Energy Info (EERE)

Management of the Future Electricity System (Smart Grid Project) Jump to: navigation, search Project Name Concept for Management of the Future Electricity System Country Denmark...

400

Therapeutic alliance : exploration of the construct validity of the concept.  

E-Print Network (OSTI)

??between therapeutic alliance and outcome at end of treatment; still, there is a lack of coherent theory regarding the concept and lack of agreement on (more)

Lindgren, Annika

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Investigation of 9Be from nonlocalized clustering concept  

E-Print Network (OSTI)

The nonlocalized aspect of clustering, which is a new concept for self-conjugate nuclei, is extended for the investigation of the N{\

Mengjiao Lyu; Zhongzhou Ren; Bo Zhou; Yasuro Funaki; Hisashi Horiuchi; Gerd Rpke; Peter Schuck; Akihiro Tohsaki; Chang Xu; Taiichi Yamada

2014-08-22T23:59:59.000Z

402

Growth factor parametrization and modified gravity  

SciTech Connect

The growth rate of matter perturbation and the expansion rate of the Universe can be used to distinguish modified gravity and dark energy models in explaining the cosmic acceleration. The growth rate is parametrized by the growth index {gamma}. We discuss the dependence of {gamma} on the matter energy density {omega} and its current value {omega}{sub 0} for a more accurate approximation of the growth factor. The observational data, including the data of the growth rate, are used to fit different models. The data strongly disfavor the Dvali-Gabadadze-Porrati model. For the dark energy model with a constant equation of state, we find that {omega}{sub 0}=0.27{+-}0.02 and w=-0.97{+-}0.09. For the {lambda}CDM model, we find that {gamma}=0.64{sub -0.15}{sup +0.17}. For the Dvali-Gabadadze-Porrati model, we find that {gamma}=0.55{sub -0.13}{sup +0.14}.

Gong Yungui [College of Mathematics and Physics, Chongqing University of Posts and Telecommunications, Chongqing 400065 (China)

2008-12-15T23:59:59.000Z

403

RESEARCH ARTICLE Seed bank persistence of genetically modified canola  

E-Print Network (OSTI)

RESEARCH ARTICLE Seed bank persistence of genetically modified canola in California Douglas J-Verlag 2012 Abstract Introduction Canola, which is genetically modified (GM) for tolerance to glyphosate, has of glyphosate. Methods Volunteer from dormant canola seeds produced thousands of plants per hectare

California at Davis, University of

404

A modified LandauDevonshire thermodynamic potential for strontium titanate  

E-Print Network (OSTI)

A modified Landau­Devonshire thermodynamic potential for strontium titanate G. Sheng, Y. L. Li, J Landau­Devonshire thermodynamic potential for strontium titanate G. Sheng,1,a Y. L. Li,2 J. X. Zhang,1,b of the Landau energy coefficients and report a modified thermodynamic potential for bulk strontium titanate

Chen, Long-Qing

405

EXTENSION OF THE TRANSMISSION LINE THEORY APPLICATION WITH MODIFIED  

E-Print Network (OSTI)

1 EXTENSION OF THE TRANSMISSION LINE THEORY APPLICATION WITH MODIFIED ENHANCED PER introduces a modified enhanced transmission-line theory to account for higher-order modes while using a standard transmission line equation solver or equivalently a Baum, Liu and Tesche (BLT) equation solver

Paris-Sud XI, Université de

406

SURFACE CHARACTERIZATION OF CHEMICALLY MODIFIED WOOD: DYNAMIC WETTABILITY1  

E-Print Network (OSTI)

SURFACE CHARACTERIZATION OF CHEMICALLY MODIFIED WOOD: DYNAMIC WETTABILITY1 John Z. Lu* Postdoctoral-3015 [a maleated polypropylene (MAPP) copolymer with a high molecular weight]-treated wood surface the dynamic wettability of wood surfaces modified with different coupling agents. Keywords: Chemical

407

Concept Acquisition: How to get something from nothing Dan Ryder, UNC Chapel Hill  

E-Print Network (OSTI)

get concepts from something that's not concepts. Suppose we get concepts from other concepts, that is the goal of a blank slate, we need to show that it's possible to derive concepts from something thatConcept Acquisition: How to get something from nothing Dan Ryder, UNC ­ Chapel Hill [Blank overhead

Ryder, Dan

408

Submisso de Trabalho Completo INTRODUCTION TO SAFETY MANAGEMENT CONCEPTS  

E-Print Network (OSTI)

concept of training, education and communication for a proactive and generative safety culture. 1Submissão de Trabalho Completo INTRODUCTION TO SAFETY MANAGEMENT CONCEPTS WITH FOCUS ON AIRLINE replaced by internal company Quality Management Systems (QMS). Safety has to be managed to avoid a leak

Berlin,Technische Universität

409

A Concept of Sustainable Use of Natural Resources  

E-Print Network (OSTI)

A Concept of Sustainable Use of Natural Resources in Regional Development Contexts Sustainable;Sustainable Regional Development in Rural Africa Part III A Concept of Sustainable Use of Natural Resources;Citation Wiesmann U. 2008. Sustainable Regional Development in Rural Africa, Part III: A Con- cept

Richner, Heinz

410

Photovoltaic Pumping Systems A Comparison of Two Concepts  

E-Print Network (OSTI)

Photovoltaic Pumping Systems A Comparison of Two Concepts Hans Bloos, Markus Genthner, Detlev of Oldenburg two different concepts of photovoltaic pumping subsystems available on the market were Photovoltaic pumping (PVP) has established itself as a water lifting technique for remote areas in sun

Heinemann, Detlev

411

Assessment of Learning Outcomes Using a Mathematical Reasoning Concept Inventory  

E-Print Network (OSTI)

Assessment of Learning Outcomes Using a Mathematical Reasoning Concept Inventory Svetlana V Using a Mathematical Reasoning Concept Inventory Svetlana V. Drachova-Strang Jason O. Hallstrom Rich Pak@denison.edu ABSTRACT Undergraduate CS students need to learn analytical reasoning skills to develop high quality

Hallstrom, Jason

412

Assessment of Learning Outcomes Using a Mathematical Reasoning Concept Inventory  

E-Print Network (OSTI)

Assessment of Learning Outcomes Using a Mathematical Reasoning Concept Inventory Svetlana Drachova Reasoning Concept Inventory Svetlana V. Drachova Jason O. Hallstrom Murali Sitaraman Clemson University analytical reasoning skills to develop high quality software and to understand why the software they develop

Hallstrom, Jason

413

Project management process ontologies: a proof of concept  

E-Print Network (OSTI)

to be familiar. #12;A large number of written procedures incurs the risk that project progress is slowed becauseProject management process ontologies: a proof of concept Robert T. Hughes Department of Computing of representing project management processes as ontologies. The proof of concept is the creation of a prototype

Winstanley, Graham

414

A System for Epigenetic Concept Development through Autonomous Associative Learning  

E-Print Network (OSTI)

. A concept is an abstract and compact representation of information from multiple sources. This paper environment, to develop an internal sensor that measures the semi-concrete concept of distance traveled that is not necessarily in the self-reflective domain, greatly widening the pool of cognitive systems. This work

Grabowski, Laura M. - Department of Computer Science, University of Texas

415

Advance Reactor Concepts Technical Review Panel Public Report  

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

The Office of Nuclear Energy supports research and development for advanced reactor technologies. This report documents the results of the 2014 Technical Review Panel (TRP) review of seven advanced reactor concepts. The intent of the process was to identify R&D needs for advanced reactor concepts in order to inform Department of Energy (DOE) Office of Nuclear Energy R&D investment decisions.

416

Database System Concepts, 5th Ed. Silberschatz, Korth and Sudarshan  

E-Print Network (OSTI)

Overall Structure History of Database Systems #12;©Silberschatz, Korth and Sudarshan1.3Database SystemDatabase System Concepts, 5th Ed. ©Silberschatz, Korth and Sudarshan See www, Korth and Sudarshan1.2Database System Concepts - 5th Edition, May 23, 2005 Chapter 1: Introduction

Dragan, Feodor F.

417

Supporting Creative Concept Generation by Engineering Students with Biomimetic Design  

E-Print Network (OSTI)

Supporting Creative Concept Generation by Engineering Students with Biomimetic Design Hyunmin the analogical transfer tools we developed affected engineering students in generating creative concepts. We of Mechanical and Industrial Engineering, University of Toronto 5 King's College Road, Toronto, ON, M5S 3G8

Shu, Lily H.

418

ROUGH SET APPROXIMATIONS: A CONCEPT ANALYSIS POINT OF VIEW  

E-Print Network (OSTI)

ROUGH SET APPROXIMATIONS: A CONCEPT ANALYSIS POINT OF VIEW Yiyu Yao University of Regina, Regina and content of data, definable concepts, lower and upper ap- proximations, rough set approximations Contents 1. Conclusion Bibliography Biographical Sketches Summary Rough set theory was proposed by Pawlak for analyzing

Yao, Yiyu

419

Concept integration of document databases using different indexing languages  

Science Journals Connector (OSTI)

An integrated information retrieval system generally contains multiple databases that are inconsistent in terms of their content and indexing. This paper proposes a rough set-based transfer (RST) model for integration of the concepts of document databases ... Keywords: Compatibility, Concept integration, Document database, Indexing language, Rough set theory

Xueying Zhang

2006-01-01T23:59:59.000Z

420

ARR/April 8, 2008 Magnetic Intervention Dump Concepts  

E-Print Network (OSTI)

for us in designing a liquid Pb dump at bottom New Inverted Martini Glass Cusp Concept (From B. Robson) #12;ARR/April 8, 2008 5 Better to Use Inverted Burgundy Glass Concept (if possible) to Prevent Direct for clean-up - Separate coolant for power removal (e.g. Pb-17Li) · Different liquid Pb configurations

Raffray, A. René

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


421

Statistics of modifier distributions in mixed network glasses  

Science Journals Connector (OSTI)

The constituents of any network glass can be broadly classified as either network formers or network modifiers. Network formers such as SiO2 Al2O3 B2O3 P2O5 etc. provide the backbone of the glass network and are the primary source of its rigid constraints. Network modifiers play a supporting role such as charge stabilization of the network formers or alteration of the network topology through rupture of bridging bonds and introduction of floppy modes. The specific role of the modifiers depends on which network formers are present in the glass and the relative free energies of modifier interactions with each type of network former site. This variation of free energy with modifier speciation is responsible for the so-called mixed network former effect i.e. the nonlinear scaling of property values in glasses having fixed modifier concentration but a varying ratio of network formers. In this paper a general theoretical framework is presented describing the statistical mechanics of modifier speciation in mixed network glasses. The model provides a natural explanation for the mixed network former effect and also accounts for the impact of thermal history and relaxation on glass network topology.

John C. Mauro

2013-01-01T23:59:59.000Z

422

Modified Accelerated Cost-Recovery System (MACRS) + Bonus Depreciation  

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

Modified Accelerated Cost-Recovery System (MACRS) + Bonus Modified Accelerated Cost-Recovery System (MACRS) + Bonus Depreciation (2008-2012) Modified Accelerated Cost-Recovery System (MACRS) + Bonus Depreciation (2008-2012) < Back Eligibility Agricultural Commercial Industrial Savings Category Bioenergy Commercial Heating & Cooling Manufacturing Buying & Making Electricity Alternative Fuel Vehicles Hydrogen & Fuel Cells Wind Water Solar Heating & Cooling Heating Water Heating Program Info Start Date 1986 Program Type Corporate Depreciation Provider U.S. Internal Revenue Service Under the federal Modified Accelerated Cost-Recovery System (MACRS), businesses may recover investments in certain property through depreciation deductions. The MACRS establishes a set of class lives for various types of property, ranging from three to 50 years, over which the property may be

423

Amperometric Biosensors Based on Carbon Paste Electrodes Modified...  

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

Modified with Nanostructured Mixed-valence Manganese Oxides and Glucose Oxidase."Nanomedicine 1(2):130-135. Authors: X Cui G Liu Y Lin Capabilities: Spectroscopy and Diffraction...

424

Impact fracture behavior of model system modified polypropylene  

E-Print Network (OSTI)

The morphology and impact properties of polypropylene copolymer blends modified with talc and/or ethylene-propylene (EPR) or ethylene-octene (EOR) rubber were studied. Izod impact, instrumented Charpy impact, and high speed single...

Estrada, Albert Jesse

2012-06-07T23:59:59.000Z

425

Modifying Nanotubes Chemistry and Electronics of Carbon Nanotubes  

E-Print Network (OSTI)

Modifying Nanotubes Chemistry and Electronics of Carbon Nanotubes Go Together Ernesto Joselevich* Keywords: chemical reactivity · electronic structure · molecular electronics · nanotechnology · nanotubes yield mixtures of metallic and semi- conducting nanotubes, extensive re- search has been devoted

Joselevich, Ernesto

426

LARYNGEAL ADJUSTMENTS IN STUTTERING: MODIFIED REACTION PARhDIGM*  

E-Print Network (OSTI)

LARYNGEAL ADJUSTMENTS IN STUTTERING: MODIFIED REACTION PARhDIGM* Hirohide Yoshioka+ and Anders UHqvist++ A GLOTTOGRAPHIC OBSERVATION USING A Abstract. An experimental paradigm for studying stuttering and dysfluent utterances. These findings suggest that stuttering is linked to a temporal disruption

427

Testing and Comparing the Modified Anomalous Diffraction Approximation  

Science Journals Connector (OSTI)

The modified anomalous diffraction approximation (MADA) is used to predict absorption and extinction in water and ice clouds, but it does not predict the scattering phase function or asymmetry parameter g. In conjunction with g parameterizations, ...

David L. Mitchell; Anthony J. Baran; W. P. Arnott; C. Schmitt

2006-11-01T23:59:59.000Z

428

TR-031 Ecology March 2004 A modified timber cruise  

E-Print Network (OSTI)

TR-031 Ecology March 2004 A modified timber cruise for the inventory of dead wood in Coastal-751-7001 Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife 2004 Research Section, Coast Forest Region, BCMOF Research Disciplines: Ecology ~ Geology

429

The transatlantic rift in genetically modified food policy  

Science Journals Connector (OSTI)

The regulatory structures underlying United States and European Union policies regarding genetically modified (GM) food and crops are fundamentally different. The US regulates GM foods and crops as end product...

Celina Ramjou

2007-10-01T23:59:59.000Z

430

Minor Actinide Transmutation Potential of Modified PROMETHEUS Fusion Reactor  

Science Journals Connector (OSTI)

This study presents the investigation of the burning and/or transmutation (B/T) of minor actinides (MAs) in the modified PROMETHEUS-H fusion reactor. The calculations were performed for an operation...2.... In or...

Hseyin Yap??c??; Gamze Gen; Nesrin Demir; Bilge eper

2004-06-01T23:59:59.000Z

431

The Crystal Structure of Non-Modified and Bipyridine-Modified PNA Duplexes  

SciTech Connect

Peptide nucleic acid (PNA) is a synthetic analogue of DNA that commonly has an N-aminoethyl glycine backbone. The crystal structures of two PNA duplexes, one containing eight standard nucleobase pairs (GGCATGCC)2, and the other containing the same nucleobase pairs and a central pair of bipyridine ligands, have been solved with a resolution of 1.22 and 1.10 {angstrom}, respectively. The non-modified PNA duplex adopts a P-type helical structure similar to that of previously characterized PNAs. The atomic-level resolution of the structures allowed us to observe for the first time specific modes of interaction between the terminal lysines of the PNA and the backbone and the nucleobases situated in the vicinity of the lysines, which are considered an important factor in the induction of a preferred handedness in PNA duplexes. Our results support the notion that whereas PNA typically adopts a P-type helical structure, its flexibility is relatively high. For example, the base-pair rise in the bipyridine-containing PNA is the largest measured to date in a PNA homoduplex. The two bipyridines bulge out of the duplex and are aligned parallel to the major groove of the PNA. In addition, two bipyridines from adjacent PNA duplexes form a p-stacked pair that relates the duplexes within the crystal. The bulging out of the bipyridines causes bending of the PNA duplex, which is in contrast to the structure previously reported for biphenyl-modified DNA duplexes in solution, where the biphenyls are p stacked with adjacent nucleobase pairs and adopt an intrahelical geometry. This difference shows that relatively small perturbations can significantly impact the relative position of nucleobase analogues in nucleic acid duplexes.

Yeh, Joanne I.; Pohl, Ehmke; Truan, Daphne; He, Wei; Sheldrick, George M.; Du, Shoucheng; Achim, Catalina (Pitt); (PSI); (Goettingen); (Durham); (CM)

2011-09-28T23:59:59.000Z

432

Solar System experiments do not yet veto modified gravity models  

E-Print Network (OSTI)

The dynamical equivalence between modified and scalar-tensor gravity theories is revisited and it is concluded that it breaks down in the limit to general relativity. A gauge-independent analysis of cosmological perturbations in both classes of theories lends independent support to this conclusion. As a consequence, the PPN formalism of scalar-tensor gravity and Solar System experiments do not veto modified gravity, as previously thought.

Valerio Faraoni

2006-07-05T23:59:59.000Z

433

Studies on a small modified plasma focus opening switch  

Science Journals Connector (OSTI)

The small plasma focus device UNU/ICTP PFF has been modified to test its operation as an opening switch with a plasma filled diode as the load. Recent experiment results on this modified plasma focus opening switch (MPFOS) showing long conduction opening action have been reported [1 2 3]. In this paper a series of experiments to characterize the ion beams produced will be reported.

W. S. Leong; C. S. Wong; P. Choi; S. P. Moo

1997-01-01T23:59:59.000Z

434

Status of Overseas Microgrid Programs: Microgrid Research Activities in the U.S.  

E-Print Network (OSTI)

?? IEEEP1547.4 ??? ?????????? EPS?Electric Power System? ????????? EPS ????????????? EPS ?????????????????EPS ??????? ????EPS ???????????

Marnay, Chris

2008-01-01T23:59:59.000Z

435

Evaluation of Generic EBS Design Concepts and Process Models Implications  

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

Generic EBS Design Concepts and Process Models Generic EBS Design Concepts and Process Models Implications to EBS Design Optimization Evaluation of Generic EBS Design Concepts and Process Models Implications to EBS Design Optimization The assessment of generic Engineered Barrier System (EBS) concepts and design optimization to harbor various disposal configurations and waste types needs advanced approaches and methods to analyze barrier performance. The report addresses: 1) Overview of the importance of Thermal-Hydrological-Mechanical-Chemical (THMC) processes to barrier performance, and international collaborations; 2) THMC processes in clay barriers; 3) experimental studies of clay stability and clay-metal interactions at high temperatures and pressures; 4) thermodynamic modeling and database development; 5) Molecular Dynamics (MD) study of clay

436

Evolution of the Distributed Utility Concept 1988-2003  

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

Evolution of the Distributed Utility Concept 1988-2003 Evolution of the Distributed Utility Concept 1988-2003 Speaker(s): Joe Iannucci Date: March 27, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Kristina LaCommare Joe Iannucci of Distributed Utility Associates, a small consulting firm in Livermore specializing in distributed resources, will speak on his experiences in the evolution of the Distributed Utility Concept. Joe's background in solar analysis at Sandia National Laboratories, and as a Director of Research at PG&E led to his insights in the late 1980s that the value of power was becoming even more important than its generation cost. He will explain how this perspective shift gave rise to the Distributed Utility Concept work at PG&E's (belated) research and development department in San Ramon. Since then Joe and his former and present

437

Innovative Concepts for Beneficial Reuse of Carbon Dioxide | Department of  

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

Innovative Concepts for Beneficial Reuse of Carbon Dioxide Innovative Concepts for Beneficial Reuse of Carbon Dioxide Innovative Concepts for Beneficial Reuse of Carbon Dioxide Funding for 12 projects to test innovative concepts for the beneficial use of carbon dioxide (CO2) was announced by the U.S. Department of Energy. The awards are part of $1.4 billion in funding from the American Recovery and Reinvestment Act (ARRA) for projects that will capture carbon dioxide from industrial sources. These 12 projects will engage in a first phase feasibility study that will examine beneficial uses in a variety of ways, including mineralization to carbonates directly through conversion of CO2 in flue gas; the use of CO2 from power plants or industrial applications to grow algae/biomass; and conversion of CO2 to fuels and chemicals. Each project will be subject to

438

ECOLOGICAL DIVERSITY AND BIODIVERSITY AS CONCEPTS FOR CONSERVATION PLANNING  

E-Print Network (OSTI)

ECOLOGICAL DIVERSITY AND BIODIVERSITY AS CONCEPTS FOR CONSERVATION PLANNING: COMMENTS ON RICOTTA Sahotra Sarkar Biodiversity and Biocultural Conservation Laboratory, Section of Integrative Biology of measures of biodiversity which can be used for systematic conservation planning. Moreover, these measures

Sarkar, Sahotra

439

Assessment of Different Bioenergy Concepts in Terms of Sustainable Development  

Science Journals Connector (OSTI)

This chapter focuses on the assessment of different concepts sustainability regarding the energetic use of biomass in rural areas. The aim is to provide decision support, while taking environmental, economic, so...

Swantje Eigner-Thiel; Meike Schmehl

2013-01-01T23:59:59.000Z

440

GREEN HOME: The Concept and Study of Grid Responsiveness  

Science Journals Connector (OSTI)

This paper describes the concept for a distributed demand management program based on bi-directional communication involving an energy management system of a Grid Responsive Energy Efficient Networked (GREEN) hom...

Slobodanka Tomic; Jan Haase; Goran Lazendic

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

Concept:U.S. National Lab Programs | Open Energy Information  

Open Energy Info (EERE)

Showing 78 pages belonging to that concept. A ANL Wind Power Forecasting and Electricity Markets Afghanistan-NREL Mission Afghanistan-NREL Resource Maps and Toolkits Algeria-NREL...

442

Architectural Approaches, Concepts and Methodologies of Service Oriented Architecture  

E-Print Network (OSTI)

Architectural Approaches, Concepts and Methodologies of Service Oriented Architecture Master Thesis. Introduction to Service Oriented Architecture........................................... 2.1 Evolution Middleware (MOM)........................................... 2.5 Definition of Service Oriented Architecture

Moeller, Ralf

443

Texas agricultural science teachers' perceptions of the FFA leadership concepts  

E-Print Network (OSTI)

in conjunction with leadership concepts from the National FFA Essential Learnings Project. The study's final objective was to assess leadership development needed by high school students upon entrance to higher education institutions and/or the workforce...

King, Elizabeth Michelle Baldwin

2003-01-01T23:59:59.000Z

444

Process Technology and Advanced Concepts: Organic Solar Cells (Fact Sheet)  

SciTech Connect

Capabilities fact sheet for the National Center for Photovoltaics: Process Technology and Advanced Concepts: Organic Solar Cell that includes scope, core competencies and capabilities, and contact/web information.

Not Available

2011-06-01T23:59:59.000Z

445

Book Review: Basic Concepts of Probability and Statistics  

Science Journals Connector (OSTI)

Basic Concepts of Probability and Statistics, by J.L. Hodges, Jr. and E.L. Lehmann. 2nd Ed. Philadelphia PA, Society for Industrial and Applied Mathematics, 2005. ISBN: 0-89871-575-X

Janez Grum

2006-01-01T23:59:59.000Z

446

Concepts, Activities and Issues of Policy-based Communications Management  

Science Journals Connector (OSTI)

Policy-based management is an approach that has been considered for some years within the distributed systems management research community. The concepts have recently been adopted by standards bodies including the International Telecommunications Union ...

M. D. J. Cox; R. G. Davison

1999-07-01T23:59:59.000Z

447

Testing, Implementation, and Evolution of Seeding ConceptsA Review  

Science Journals Connector (OSTI)

In this paper, testing, implementation, and evolution of both static and dynamic seeding concepts are reviewed. A brief review of both waterspray and hygroscopic seeding is first presented. This is followed by reviews of static seeding of stable ...

William R. Cotton

1986-12-01T23:59:59.000Z

448

Synthetic fuel concept to steal CO2 from air  

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

to steal CO2 from air Lab has developed a low-risk, transformational concept, called Green Freedom(tm), for large-scale production of carbon-neutral, sulfur-free fuels and...

449

Ford Debuts Solar Energy Concept Car | Department of Energy  

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

Addthis The Ford Motor Company unveiled on January 2 the C-MAX Solar Energi Concept, a sun-powered vehicle with the potential to deliver what a plug-in hybrid offers without...

450

Modeling Concept Combinations in a Quantum-theoretic Framework  

E-Print Network (OSTI)

We present modeling for conceptual combinations which uses the mathematical formalism of quantum theory. Our model faithfully describes a large amount of experimental data collected by different scholars on concept conjunctions and disjunctions. Furthermore, our approach sheds a new light on long standing drawbacks connected with vagueness, or fuzziness, of concepts, and puts forward a completely novel possible solution to the 'combination problem' in concept theory. Additionally, we introduce an explanation for the occurrence of quantum structures in the mechanisms and dynamics of concepts and, more generally, in cognitive and decision processes, according to which human thought is a well structured superposition of a 'logical thought' and a 'conceptual thought', and the latter usually prevails over the former, at variance with some widespread beliefs

Diederik Aerts; Sandro Sozzo

2014-01-15T23:59:59.000Z

451

Intrinsic Coherence: A New Concept in Polarization and Coherence Theory  

Science Journals Connector (OSTI)

The concept of interference has always been critical to our grasp of the nature of light. Building on the groundbreaking work of Emil Wolf and Roy Glauber, these authors analyze...

Rfrgier, Philippe; Roueff, Antoine

2007-01-01T23:59:59.000Z

452

Generating Tensor Representation from Concept Tree in Meaning Based Search  

E-Print Network (OSTI)

to a representation that can be stored and compared efficiently on computers. Meaning of objects can be adequately captured in terms of a hierarchical composition structure called concept tree. This thesis describes the design and development...

Panigrahy, Jagannath

2011-08-08T23:59:59.000Z

453

Concept drift learning and its application to adaptive information filtering  

E-Print Network (OSTI)

is generally difficult. The second part presents a computational Framework for Extending Incomplete Labeled Data Stream (FEILDS). The system modularly extends the capability of an existing concept drift learner in dealing with incomplete labeled data stream...

Widyantoro, Dwi Hendratmo

2004-09-30T23:59:59.000Z

454

Immunochemical Studies of DNA Modified by cis-Dichlorodiammineplatinum(II) in Vivo and in Vitro  

Science Journals Connector (OSTI)

...not formed in several modified synthetic DNA's and RNA's. At least two...not formed in several modified synthetic DNA's and RNA's. At least two...not formed in several modified synthetic DNA's and RNA's. At least two...

Bernard Malfoy; Brigitte Hartmann; Jean-Pierre Macquet; Marc Leng

1981-10-01T23:59:59.000Z

455

Modified jet calculus of Bassetto, Ciafaloni, and Marchesini  

Science Journals Connector (OSTI)

We reexamine some of the equations derived by Bassetto, Ciafaloni, and Marchesini for the various functions in their extended jet calculus, and derive an alternative set of equations based on the same concepts.

Lorella M. Jones and K. E. Lassila

1982-06-01T23:59:59.000Z

456

Chemical modification of simul wood with styreneacrylonitrile copolymer and organically modified nanoclay  

Science Journals Connector (OSTI)

Simul wood (Salmalia malabarica...) was chemically modified by treatment with styreneacrylonitrile copolymer (SAN), glycidyl methacrylate (GMA), and organically modified nanoclay. The physical properties of wood...

R. R. Devi; T. K. Maji

2012-01-01T23:59:59.000Z

457

EIS-0407: Amended Notice of Intent to Modify the Scope of the...  

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

Amended Notice of Intent to Modify the Scope of the Environmental Impact Statement EIS-0407: Amended Notice of Intent to Modify the Scope of the Environmental Impact Statement...

458

An examination of concept lattices, types, and functions inRogets International Thesaurus  

Science Journals Connector (OSTI)

The notions of objects and attributes are essential to knowledge representation. Rudolf Willes concept lattices group objects and attributes into concepts, with concepts organized in a lattice, so that some c...

John Brady

1993-06-01T23:59:59.000Z

459

Corrosion inhibitors based on chitosan-heptanoate modified beidellite  

Science Journals Connector (OSTI)

This study deals with the development of a novel inhibitor based on heptanoate anions encapsulated within chitosan-modified beidellite. Included in coating, this inhibitor ensured efficient protection of metals against wet corrosion via permanent controllable release of the heptanoate inhibitor. The interlayer Na+ ions of beidellite from Agadir basin (Morocco) were exchanged with chitosan cations. The modified beidellite was studied by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), thermogravimetry (TG) analysis coupled to mass spectrometry (MS) and, X-ray diffraction (XRD) analysis. The expansion of the interlayer space of beidellite by ?1.16nm, evidenced by XRD, was consistent with the arrangement of chitosan bilayer. Exceeding positively charged sites of the biopolymer were compensated by heptanoate anions. Electrochemical impedance spectroscopy (EIS) measurements were carried out on galvanized steel immersed in a 3mass% NaCl solution. The measurements revealed improvement of corrosion inhibition by chitosan-heptanoate modified beidellite in comparison with commercially available triphosphate aluminium (TPA) anti corrosion pigments. The improved corrosion inhibition was due to the continuous leaching of hepatanoate anions as inhibitors. However, the barrier properties of coatings containing chitosan-heptanoate modified beidellite were not as high as those of TPA-based coatings, probably due to insufficient dispersion of the modified beidellite particles within the polymeric matrix.

Ahmed At Aghzzaf; Benaissa Rhouta; Jean Steinmetz; Emmanuel Rocca; Lionel Aranda; Aziza Khalil; Jacques Yvon; Lahcen Daoudi

2012-01-01T23:59:59.000Z

460

The Normative-Functional Concept of Sustainability and the Question of Indicator Weights  

Science Journals Connector (OSTI)

The concept was originally proposed as a vertical alternative to the classical horizontal three-pillar concept of ecologicaleconomicalsocial sustainability (cf. Chap. 1 ...

Wolfgang Weimer-Jehle

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modified microgrid concept" 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

LANL/PNNL Virtual Center for Chemical Hydrides and New Concepts...  

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

LANLPNNL Virtual Center for Chemical Hydrides and New Concepts for Hydrogen Storage LANLPNNL Virtual Center for Chemical Hydrides and New Concepts for Hydrogen Storage...

462

E-Print Network 3.0 - advanced control concept Sample Search...  

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

concept Search Powered by Explorit Topic List Advanced Search Sample search results for: advanced control concept Page: << < 1 2 3 4 5 > >> 1 MIT LINCOLN LABORATORY ORGANIZATION OF...

463

Astraeus Wind Modifies Manufacturing in Michigan | Department of Energy  

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

Astraeus Wind Modifies Manufacturing in Michigan Astraeus Wind Modifies Manufacturing in Michigan Astraeus Wind Modifies Manufacturing in Michigan May 14, 2010 - 3:35pm Addthis Lindsay Gsell When the assembly line was introduced to the automobile industry, everything changed. Cars were produced in less time with fewer errors, and each one was exactly the same as the last. As a result, the industry boomed. Astraeus Wind LLC hopes to bring this type of success to wind turbine manufacturing by standardizing the blade manufacturing process. The company wants to experiment with new materials to strengthen the blades while creating an automated process to assemble them, creating identical blades in a fast, efficient manner. CEO Jeff Metts says standardizing this process will help ensure each blade has the same measurements, lower the amount of time needed for production

464

Will multiple probes of dark energy find modified gravity?  

SciTech Connect

One of the most pressing issues in cosmology is whether general relativity (GR) plus a dark sector is the underlying physical theory or whether a modified gravity model is needed. Upcoming dark energy experiments designed to probe dark energy with multiple methods can address this question by comparing the results of the different methods in constraining dark energy parameters. Disagreement would signal the breakdown of the assumed model (GR plus dark energy). We study the power of this consistency test by projecting constraints in the w{sub 0}-w{sub a} plane from the four different techniques of the Dark Energy Survey in the event that the underlying true model is modified gravity. We find that the standard technique of looking for overlap has some shortcomings, and we propose an alternative, more powerful Multidimensional Consistency Test. We introduce the methodology for projecting whether a given experiment will be able to use this test to distinguish a modified gravity model from GR.

Shapiro, Charles [Institute of Cosmology and Gravitation, Portsmouth, PO1 3FX (United Kingdom); Dodelson, Scott [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States); Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637 (United States); Kavli Institute for Cosmological Physics, Chicago, Illinois 60637 (United States); Hoyle, Ben [Institut de Ciencies del Cosmos, Barcelona (Spain); Samushia, Lado [Institute of Cosmology and Gravitation, Portsmouth, PO1 3FX (United Kingdom); National Abastumani Astrophysical Observatory, Ilia State University, 2A Kazbegi Ave, GE-0160 Tbilisi (Georgia); Flaugher, Brenna [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)

2010-08-15T23:59:59.000Z

465

Seismic performance of polymer modified concretes in flexure-modelling  

Science Journals Connector (OSTI)

Considerable research has been carried out in the recent years in the development of models to simulate the inelastic responses of reinforced concrete elements. The enhancement of ductility and the post-peak behaviour are of special interest for the seismic design of structures. Polymer modified fibre concretes are found to be ideal for seismic application with its inherent structural characteristics. An experimental investigation has been undertaken to understand the flexural behaviour of the polymer-modified fibre concrete modified with natural rubber latex. The results are compared with the response of normal strength concrete beam. Analytical modelling of the beams were carried out in a user friendly finite element software to accurately predict the monotonic behaviour of the beams which is considered to be the envelope of cyclic curve. The strains developed were found and are compared with the theoretical results.

R. Sreekala; K. Muthumani; N. Gopalakrishnan; K. Sathish Kumar; G.V. Rama Rao; Nagesh R. Iyer

2012-01-01T23:59:59.000Z

466

Will multiple probes of dark energy find modified gravity?  

Science Journals Connector (OSTI)

One of the most pressing issues in cosmology is whether general relativity (GR) plus a dark sector is the underlying physical theory or whether a modified gravity model is needed. Upcoming dark energy experiments designed to probe dark energy with multiple methods can address this question by comparing the results of the different methods in constraining dark energy parameters. Disagreement would signal the breakdown of the assumed model (GR plus dark energy). We study the power of this consistency test by projecting constraints in the w0-wa plane from the four different techniques of the Dark Energy Survey in the event that the underlying true model is modified gravity. We find that the standard technique of looking for overlap has some shortcomings, and we propose an alternative, more powerful Multidimensional Consistency Test. We introduce the methodology for projecting whether a given experiment will be able to use this test to distinguish a modified gravity model from GR.

Charles Shapiro; Scott Dodelson; Ben Hoyle; Lado Samushia; Brenna Flaugher

2010-08-17T23:59:59.000Z

467

Hanford Waste Treatment Plant Support Task Order Modified | Department of  

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

Waste Treatment Plant Support Task Order Modified Waste Treatment Plant Support Task Order Modified Hanford Waste Treatment Plant Support Task Order Modified March 11, 2013 - 12:00pm Addthis Media Contact Lynette Chafin, 513-246-0461 Lynette.Chafin@emcbc.doe.gov Cincinnati - The Department of Energy (DOE) today awarded a modification to a task order to Aspen Resources Limited, Inc. of Boulder, Colorado for support of the Waste Treatment and Immobilization Plant (WTP) at the Hanford Site. The modification increased the value of the task order to $1.6 million from $833,499. The task order modification has a one-year performance period and two one-year option periods. The Task Order was awarded under an Indefinite Delivery/Indefinite Quantity (ID/IQ) master Contract. Aspen Resources Limited, Inc. is a small-disadvantaged business under the Small Business Administration's

468

Intramolecular ET in Ru-Modified MnCyt c  

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

Tetraammine(L)ruthenium(III)-Modified Tetraammine(L)ruthenium(III)-Modified Manganocytochromes c Ji Sun and James F. Wishart Inorg. Chem. 37, 1124-1126 (1998) [Find paper at ACS Publications] or use ACS Articles on Request Abstract: Manganese-substituted horse heart cytochrome c was prepared by replacing the iron in the heme group according to established methods. The resulting manganicytochrome c was subsequently modified at histidine-33 with three ruthenium complexes trans-(NH3)4(L)Ru-His33, where L = NH3, pyridine or isonicotinamide. Proof of correct derivatization was obtained by atomic absorption analysis of manganese and ruthenium, differential pulse voltammetry and electrospray mass spectroscopy. Manganese(II)-to-ruthenium(III) intramolecular electron transfer rates were measured as a function of temperature by pulse radiolysis, using oxidation

469

Energy Pyramids: Useful Concepts, Not More Pyramid Schemes | Department of  

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

Pyramids: Useful Concepts, Not More Pyramid Schemes Pyramids: Useful Concepts, Not More Pyramid Schemes Energy Pyramids: Useful Concepts, Not More Pyramid Schemes February 8, 2010 - 2:40pm Addthis John Lippert At a December holiday party, the host handed me a newspaper clipping and asked me what I thought of the energy pyramid mentioned in the article. I hadn't read the article, so I told him I would read it and get back to him. Of course, when I found time to look into it, I didn't have the article with me. So I decided to do a little research on energy pyramids on the internet. It turns out that I found several variations on the theme, including the one mentioned in the article handed to me by my friend and neighbor, Larry. The Energy Use Pyramid, featured in the Washington Post article Larry asked about, was designed by architects Peter Pfeiffer and Betsy del Monte. It's

470

Breathing HRV by the Concept of AC Ventilation  

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

Breathing HRV by the Concept of AC Ventilation Breathing HRV by the Concept of AC Ventilation Speaker(s): Hwataik Han Date: July 10, 2007 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Thomas McKone Heat recovery ventilators are frequently used to save heating/cooling loads of buildings for ventilation. There are several types of HRV's, including a parallel plate type, a rotary type, a capillary type, and a heat pipe type. The breathing HRV is a heat recovery ventilator of a new kind using the concept of alternating-current ventilation. The AC ventilation is the ventilation with the airflow directions reversed periodically. It has an advantage of using a single duct system, for both supply and exhaust purposes. In order to develop a breathing HRV system, the thermal recovery performance should be investigated depending on many parameters, such as

471

Systems engineering analysis of kinetic energy weapon concepts  

SciTech Connect

This study examines, from a systems engineering design perspective, the potential of kinetic energy weapons being used in the role of a conventional strategic weapon. Within the Department of Energy (DOE) complex, strategic weapon experience falls predominantly in the nuclear weapons arena. The techniques developed over the years may not be the most suitable methodologies for use in a new design/development arena. For this reason a more fundamental approach was pursued with the objective of developing an information base from which design decisions might be made concerning the conventional strategic weapon system concepts. The study examined (1) a number of generic missions, (2) the effects of a number of damage mechanisms from a physics perspective, (3) measures of effectiveness (MOE`s), and (4) a design envelope for kinetic energy weapon concepts. With the base of information a cut at developing a set of high-level system requirements was made, and a number of concepts were assessed against these requirements.

Senglaub, M.

1996-06-01T23:59:59.000Z

472

Symmetric Achromatic Low-Beta Collider Interaction Region Design Concept  

SciTech Connect

We present a new symmetry-based concept for an achromatic low-beta collider interaction region design. A specially-designed symmetric Chromaticity Compensation Block (CCB) induces an angle spread in the passing beam such that it cancels the chromatic kick of the final focusing quadrupoles. Two such CCB?s placed symmetrically around an interaction point allow simultaneous compensation of the 1st-order chromaticities and chromatic beam smear at the IP without inducing significant 2nd-order aberrations. We first develop an analytic description of this approach and explicitly formulate 2nd-order aberration compensation conditions at the interaction point. The concept is next applied to develop an interaction region design for the ion collider ring of an electron-ion collider. We numerically evaluate performance of the design in terms of momentum acceptance and dynamic aperture. The advantages of the new concept are illustrated by comparing it to the conventional distributed-sextupole chromaticity compensation scheme.

Morozov, Vasiliy S. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Derbenev, Yaroslav S. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Lin, Fanglei [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Johnson, Rolland P. [Muons, Inc., Batavia, IL (United States)

2013-01-01T23:59:59.000Z

473

Concept for Management of the Future Electricity System (Smart Grid  

Open Energy Info (EERE)

Concept for Management of the Future Electricity System (Smart Grid Concept for Management of the Future Electricity System (Smart Grid Project) Jump to: navigation, search Project Name Concept for Management of the Future Electricity System Country Denmark Coordinates 56.26392°, 9.501785° 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":56.26392,"lon":9.501785,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

474

RENERCO Renewable Energy Concepts AG | Open Energy Information  

Open Energy Info (EERE)

RENERCO Renewable Energy Concepts AG RENERCO Renewable Energy Concepts AG Jump to: navigation, search Name RENERCO Renewable Energy Concepts AG Place Munich, Germany Zip D-80336 Sector Renewable Energy Product Munich-based service provider for all projects involving renewable energies. Also develops a complete range of projects of its own. Coordinates 48.136415°, 11.577531° 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":48.136415,"lon":11.577531,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

475

Modified dynamics of weakly coupled BEC's Josephson Junction (BJJ)  

E-Print Network (OSTI)

The tunnelling quantum dynamics of bimodal BJJ system is modified through introducing an equilibrium condition, which is based on the assumption that the BJJ is tend to keep on its ground state (with a lowest energy) during the oscillation. The tunnelling dynamics of BJJ with symmetric and asymmetric traps is discussed through numerically solving the modified equations. Stationary states are found to exist in the both BJJs. Compared to previous works, the macroscopic quantum self trapping (MQST) is auto-avoided. Meanwhile, it is revealed that the BJJ oscillates with its inherent frequency which is only related to the Josephson energy, which has been testified experimentally in other contexts.

Yu-ping Huang; Zhen-sheng Yuan; Lin-fan Zhu; Lin-jiao Luo; Xiao-jing Liu; Ke-zun Xu

2003-09-01T23:59:59.000Z

476

Miniature modified Faraday cup for micro electron beams  

DOE Patents (OSTI)

A micro beam Faraday cup assembly includes a refractory metal layer with an odd number of thin, radially positioned traces in this refractory metal layer. Some of the radially positioned traces are located at the edge of the micro modified Faraday cup body and some of the radially positioned traces are located in the central portion of the micro modified Faraday cup body. Each set of traces is connected to a separate data acquisition channel to form multiple independent diagnostic networks. The data obtained from the two diagnostic networks are combined and inputted into a computed tomography algorithm to reconstruct the beam shape, size, and power density distribution.

Teruya, Alan T. (Livermore, CA); Elmer, John W. (Danville, CA); Palmer, Todd A. (Livermore, CA); Walton, Chris C. (Berkeley, CA)

2008-05-27T23:59:59.000Z

477

Concept options for the aerial survey of Titan  

Science Journals Connector (OSTI)

Various aerial platforms intended for long endurance survey of the Titan surface are presented. A few novel concepts are introduced, including a heated methane balloon and a balloon with a tethered wind turbine. All the concept options are predicted to have lower scientific payload fractions than the Huygens probe. It is concluded that the selection of the best aerial platform option depends on more accurate mass estimates and a clear decision on whether, or not, in situ surface composition measurements are required in conjunction with aerial remote sensing.

G.E. Dorrington

2011-01-01T23:59:59.000Z

478

Concept of Operation for Waste Transport, Emplacement, and Retrieval  

SciTech Connect

The preparation of this technical report has two objectives. The first objective is to discuss the base case concepts of waste transport, emplacement, and retrieval operations and evaluate these operations relative to a lower-temperature repository design. Aspects of the operations involved in waste transport, emplacement and retrieval may be affected by the lower-temperature operating schemes. This report evaluates the effects the lower-temperature alternatives may have on the operational concepts involved in emplacing and retrieving waste. The second objective is to provide backup material for the design description, in a traceable and defensible format, for Section 2 of the Waste Emplacement/Retrieval System Description Document.

Norman T. Raczka

2001-07-02T23:59:59.000Z

479

The Inductrack concept: A new approach to magnetic levitation  

SciTech Connect

This report describes theoretical and experimental investigations of a new approach to the problem of the magnetic levitation of a moving object. By contrast with previously studied levitation approaches, the Inductrack concept concept represents a simpler, potentially less expensive, and totally passive means of levitating a high-speed train. It may also be applicable to other areas where simpler magnetic levitation systems are needed, for example, high-speed test sleds for crash testing applications, or low-friction conveyer systems for industrial use.

Post, R.F.; Ryutov, D.

1996-05-01T23:59:59.000Z

480

Effect of optically modified polyethylene terephthalate fiber socks on chronic foot pain  

E-Print Network (OSTI)

of optically modified polyethylene terephthalate fiber sockswhether socks made from polyethylene terephthalate (PET)

York, Robyn MB; Gordon, Ian L

2009-01-01T23:59:59.000Z

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


481

Assessment of a multi-stage underwater vehicle concept using a fossil-fuel Stirling engine  

SciTech Connect

The Stirling Engine because of its inherent closed-cycle operation can be readily modified to work in an airless environment even if the primary source of energy is a fossil fuel. Thus, Stirling engines are well suited for use in the underwater environment and have been operated successfully in manned military submarines since the early 1980s. In recent years fossil fueled Stirling systems have been also proposed for use in small unmanned underwater vehicles (UUVs). However, in this case the need to carry an onboard oxygen supply in a very confined space has presented a number of design difficulties. These are identified in the paper. However, if the oxidant supply to the engine is provided by the membrane extraction of dissolved oxygen from seawater and/or disposable fuel/oxidant pods are used then the UUV Stirling system becomes more attractive. If this latter concept is extended to include multi-stage vehicles then it can be shown that fossil fueled Stirlings could also be put to effective use in long range-long endurance underwater vehicular operations.

Reader, G.T.; Potter, I.J. [Univ. of Calgary, Alberta (Canada). Dept. of Mechanical Engineering

1995-12-31T23:59:59.000Z

482

On the test of the modified BCS at finite temperature  

E-Print Network (OSTI)

The results and conclusions by Ponomarev and Vdovin [Phys. Rev. C {\\bf 72}, 034309 (2005)] are inadequate to judge the applicability of the modified BCS because they were obtained either in the temperature region, where the use of zero-temperature single-particle spectra is no longer justified, or in too limited configuration spaces.

Nguyen Dinh Dang; Akito Arima

2005-10-03T23:59:59.000Z

483

Composition and biological degradability of lignin modified transgenic plants  

E-Print Network (OSTI)

Composition and biological degradability of lignin modified transgenic plants MA Bernard Vailhé, JM The influence of lignin quality on cell wall degradation was studied using, as model plants, control (C matter (DM) and lignin content were determined according to Jarrige (1961, Ann Biol Anim Biophys, 1, 163

Paris-Sud XI, Université de

484

Computer software engineers design, create, and modify computer applications.  

E-Print Network (OSTI)

Computer software engineers design, create, and modify computer applications. Computer Software Engineers (0*NET 15-1031.00, 15-1032.00) Significant Points Computer software engineers are projected are expected for college graduates with at least a bachelor's degree in computer engineering or computer

485

The modified two stream instability at nonmagnetic planets  

SciTech Connect

We describe the role the modified two stream instability plays in the interaction of the solar wind with non-magnetized planets. The instability leads to the production of energetic electrons that can be responsible for the observed x-ray emission.

Bingham, R.; Kellett, B. J. [Rutherford Appleton Laboratory, Chilton, Oxon, OX11 0QX (United Kingdom); Shapiro, V. D.; Uecer, D. [Department of Physics, University of California, San Diego, La Jolla, CA 92091 (United States); Quest, K. B. [ECE Department, University of California, San Diego, La Jolla, CA 92091 (United States)

2010-12-14T23:59:59.000Z

486

Solar system constraints on multifield theories of modified dynamics  

Science Journals Connector (OSTI)

......define a conserved energy-momentum tensor...modified dynamics by Solar system phenomenology...where is the usual energy-momentum tensor...frame effects to project into the Solar system via the scalar...additional term in the energy-momentum tensor......

R. H. Sanders

2006-08-11T23:59:59.000Z

487

Method of storing radioactive wastes using modified tobermorite  

DOE Patents (OSTI)

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

Komarneni, Sridhar (State College, PA); Roy, Della M. (State College, PA)

1985-01-01T23:59:59.000Z

488

SHORT COMMUNICATION Flow rate-modified streaming effects in heterogeneous  

E-Print Network (OSTI)

the streaming potential (Norde and Rouwendal 1990; Elgersma et al. 1992; Werner et al. 1999) or streamingSHORT COMMUNICATION Flow rate-modified streaming effects in heterogeneous microchannels Junjie Zhu relations is developed to study the streaming potential and streaming current in heterogeneous micro

Xuan, Xiangchun "Schwann"

489

FRW Cosmological model with Modified Chaplygin Gas and Dynamical System  

E-Print Network (OSTI)

The Friedmann-Robertson-Walker(FRW) model with dynamical Dark Energy(DE) in the form of modified Chaplygin gas(MCG) has been investigated. The evolution equations are reduced to an autonomous system on the two dimensional phase plane and it can be interpreted as the motion of the particle in an one dimensional potential.

Nairwita Mazumder; Ritabrata Biswas; Subenoy Chakraborty

2011-06-23T23:59:59.000Z

490

Varying Speed of Light, Modified Chaplygin Gas and Accelerating Universe  

E-Print Network (OSTI)

In this paper, we have considered a model of modified Chaplygin gas in VSL theory with variable gravitational constant $G$. We have shown that the evolution of the universe starts from radiation era to phantom model. The whole evolution of the universe has been shown diagramatically by using statefinder parameters.

Anup Kumar Singha; Ujjal Debnath

2007-01-01T23:59:59.000Z

491

Formation of the scientific concepts about the documental forms of information. The legal and source-study concepts of a document  

Science Journals Connector (OSTI)

The active use of documental information in various fields of activity has resulted in the formation of four main concepts of a document: the legal, source-study, gnoseological, and management concepts. The hi...

E. A. Pleshkevich

2010-08-01T23:59:59.000Z

492

Multi-Sensor Fusion for Localization Concept and Simulation Results  

E-Print Network (OSTI)

Multi-Sensor Fusion for Localization Concept and Simulation Results Damien Kubrak, Thales Alenia system that takes advantage of very few measurements of different types as well as map constraints. The data fusion is achieved at infrastructure and user level. Particle and extended Kalman filters

LeGland, François

493

Magnetospheric Constellation and Tomography Mission Concept R. E. Ergun1*  

E-Print Network (OSTI)

Magnetospheric Constellation and Tomography Mission Concept R. E. Ergun1* , D. E. Larson1 , T. Phan]. The interaction between the solar wind and mag- netosphere results with energy and mass transfer across magnetic and stored in the magnetotail. A plasma sheet appears between the two lobes of the magnetotail where energy

California at Berkeley, University of

494

Wireless Roadside Inspection Proof-of-Concept Test  

E-Print Network (OSTI)

Wireless Roadside Inspection Proof-of-Concept Test Phase 1A ­ Generating SDMS PeopleNet, a producer Message Set (SDMS). Data obtained during a 10-hour test was compared to similar data obtained through. DESCRIPTIONRESULTS The majority of the data obtained from the PeopleNet SDMS was accurate. However, the tested system

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Geological Disposal Concept Selection Aligned with a Voluntarism Process - 13538  

SciTech Connect

The UK's Radioactive Waste Management Directorate (RWMD) is currently at a generic stage in its implementation programme. The UK site selection process is a voluntarist process and, as yet, no communities have decided to participate. RWMD has set out a process to describe how a geological disposal concept would be selected for the range of higher activity wastes in the UK inventory, including major steps and decision making points, aligned with the stages of the UK site selection process. A platform of information is being developed on geological disposal concepts at various stages of implementation internationally and, in order to build on international experience, RWMD is developing its approach to technology transfer. The UK has a range of different types of higher activity wastes with different characteristics; therefore a range of geological disposal concepts may be needed. In addition to identifying key aspects for considering the compatibility of different engineered barrier systems for different types of waste, RWMD is developing a methodology to determine minimum separation distances between disposal modules in a co-located geological disposal facility. RWMD's approach to geological disposal concept selection is intended to be flexible, recognising the long term nature of the project. RWMD is also committed to keeping alternative radioactive waste management options under review; an approach has been developed and periodic reviews of alternative options will be published. (authors)

Crockett, Glenda; King, Samantha [Nuclear Decommissioning Authority, Building 587, Curie Avenue, Harwell Oxford, Didcot, Oxfordshire, OX11 0RH (United Kingdom)] [Nuclear Decommissioning Authority, Building 587, Curie Avenue, Harwell Oxford, Didcot, Oxfordshire, OX11 0RH (United Kingdom)

2013-07-01T23:59:59.000Z

496

Tuesday, March 13, 2007 POSTER SESSION I: FUTURE MISSION CONCEPTS  

E-Print Network (OSTI)

. Reinert R. Dissly R. Small Landing Probes for In-Situ Characterization of Asteroids and Comets [#2104] This poster describes a design concept for a small landed probe to enable characterization of both the surface and interior of asteroids or comets. Watson A. Strong S. Dawson O. Likar J. Balint T. Aubrey A. Bramall N

Rathbun, Julie A.

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Systolic algorithms: concepts, synthesis, and evolution Siang W. Song  

E-Print Network (OSTI)

-990 ­ Brazil e-mail: song@ime.usp.br Abstract In this mini-course we present the main concepts of systolic. In the first part of this mini-course we present the main ideas involved in these systolic algorithm synthesis chips are typically laid out in a linear array or bi- dimensional grid of cells. The first examples

Song, Siang Wun

498

NASA/TM--2005213688 Revolutionary Concepts of Radiation  

E-Print Network (OSTI)

NASA/TM--2005�213688 Revolutionary Concepts of Radiation Shielding for Human Exploration of Space J, Alabama R.M. Winglee University of Washington, Seattle, Washington March 2005 #12;The NASA STI Program Office...in Profile Since its founding, NASA has been dedicated to the advancement of aeronautics

Rathbun, Julie A.

499

Recherche de concepts fdrateurs dans les bases de donnes gographiques  

E-Print Network (OSTI)

the search for a set of generic "federating concepts" for describing the geographical world in a more general par- tie les processus qui créeront les liens entre objets en se fondant sur leur géométrie, il

Joseph Fourier Grenoble-I, Université

500

PRISM: Concept-preserving Social Image Search Results Summarization  

E-Print Network (OSTI)

PRISM: Concept-preserving Social Image Search Results Summarization Boon-Siew Seah seah0097@ntu.edu.sg Sourav S Bhowmick assourav@ntu.edu.sg Aixin Sun axsun@ntu.edu.sg School of Computer Engineering, Nanyang study, we demonstrate the effectiveness of prism against state-of- the-art image summarization

Aixin, Sun