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Note: This page contains sample records for the topic "minimum efficiency performance" from the National Library of EnergyBeta (NLEBeta).
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1

Estimate of Technical Potential for Minimum Efficiency Performance Standards in 13 Major World Economies  

E-Print Network (OSTI)

Mexico minimum efficiency performance standard million tons (of CO 2 ) national energyand Mexico, produces the largest savings of all the end uses: 780 TWh. The baseline energy

Letschert, Virginie

2013-01-01T23:59:59.000Z

2

Analysis of Minimum Efficiency Performance Standards for Residential General Service Lighting in Chile  

Science Conference Proceedings (OSTI)

Minimum Efficiency Performance Standards (MEPS) have been chosen as part of Chile's national energy efficiency action plan. As a first MEPS, the Ministry of Energy has decided to focus on a regulation for lighting that would ban the sale of inefficient bulbs, effectively phasing out the use of incandescent lamps. Following major economies such as the US (EISA, 2007) , the EU (Ecodesign, 2009) and Australia (AS/NZS, 2008) who planned a phase out based on minimum efficacy requirements, the Ministry of Energy has undertaken the impact analysis of a MEPS on the residential lighting sector. Fundacion Chile (FC) and Lawrence Berkeley National Laboratory (LBNL) collaborated with the Ministry of Energy and the National Energy Efficiency Program (Programa Pais de Eficiencia Energetica, or PPEE) in order to produce a techno-economic analysis of this future policy measure. LBNL has developed for CLASP (CLASP, 2007) a spreadsheet tool called the Policy Analysis Modeling System (PAMS) that allows for evaluation of costs and benefits at the consumer level but also a wide range of impacts at the national level, such as energy savings, net present value of savings, greenhouse gas (CO2) emission reductions and avoided capacity generation due to a specific policy. Because historically Chile has followed European schemes in energy efficiency programs (test procedures, labelling program definitions), we take the Ecodesign commission regulation No 244/2009 as a starting point when defining our phase out program, which means a tiered phase out based on minimum efficacy per lumen category. The following data were collected in order to perform the techno-economic analysis: (1) Retail prices, efficiency and wattage category in the current market, (2) Usage data (hours of lamp use per day), and (3) Stock data, penetration of efficient lamps in the market. Using these data, PAMS calculates the costs and benefits of efficiency standards from two distinct but related perspectives: (1) The Life-Cycle Cost (LCC) calculation examines costs and benefits from the perspective of the individual household; and (2) The National Perspective projects the total national costs and benefits including both financial benefits, and energy savings and environmental benefits. The national perspective calculations are called the National Energy Savings (NES) and the Net Present Value (NPV) calculations. PAMS also calculate total emission mitigation and avoided generation capacity. This paper describes the data and methodology used in PAMS and presents the results of the proposed phase out of incandescent bulbs in Chile.

Letschert, Virginie E.; McNeil, Michael A.; Leiva Ibanez, Francisco Humberto; Ruiz, Ana Maria; Pavon, Mariana; Hall, Stephen

2011-06-01T23:59:59.000Z

3

Estimate of Technical Potential for Minimum Efficiency Performance Standards in 13 Major World Economies  

E-Print Network (OSTI)

exchangers, improved fan blade design and motor efficiency,blade design), which is used in most efficient ceiling fansfans. Sathaye (2012) found that efficient blade design can

Letschert, Virginie

2013-01-01T23:59:59.000Z

4

Estimate of Technical Potential for Minimum Efficiency Performance Standards in 13 Major World Economies  

E-Print Network (OSTI)

by comparing the national energy consumption, E, of the endConsumption Trends and Energy-Efficiency Improvement Options. Berkeley CA: Lawrence Berkeley NationalConsumption Trends and Energy-Efficiency Improvement Options. Berkeley CA: Lawrence Berkeley National

Letschert, Virginie

2013-01-01T23:59:59.000Z

5

Federal Energy Management Program: Minimum Efficiency Standards...  

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

Minimum Efficiency Standards for Electric Motors Section 313 of the Energy Independence and Security Act (EISA) of 2007 raised Federal minimum efficiency standards for...

6

Potential Impact of Adopting Maximum Technologies as Minimum Efficiency Performance Standards in the U.S. Residential Sector  

SciTech Connect

The US Department of Energy (US DOE) has placed lighting and appliance standards at a very high priority of the U.S. energy policy. However, the maximum energy savings and CO2 emissions reduction achievable via minimum efficiency performance standards (MEPS) has not yet been fully characterized. The Bottom Up Energy Analysis System (BUENAS), first developed in 2007, is a global, generic, and modular tool designed to provide policy makers with estimates of potential impacts resulting from MEPS for a variety of products, at the international and/or regional level. Using the BUENAS framework, we estimated potential national energy savings and CO2 emissions mitigation in the US residential sector that would result from the most aggressive policy foreseeable: standards effective in 2014 set at the current maximum technology (Max Tech) available on the market. This represents the most likely characterization of what can be maximally achieved through MEPS in the US. The authors rely on the latest Technical Support Documents and Analytical Tools published by the U.S. Department of Energy as a source to determine appliance stock turnover and projected efficiency scenarios of what would occur in the absence of policy. In our analysis, national impacts are determined for the following end uses: lighting, television, refrigerator-freezers, central air conditioning, room air conditioning, residential furnaces, and water heating. The analyzed end uses cover approximately 65percent of site energy consumption in the residential sector (50percent of the electricity consumption and 80percent of the natural gas and LPG consumption). This paper uses this BUENAS methodology to calculate that energy savings from Max Tech for the U.S. residential sector products covered in this paper will reach an 18percent reduction in electricity demand compared to the base case and 11percent in Natural Gas and LPG consumption by 2030 The methodology results in reductions in CO2 emissions of a similar magnitude.

Letschert, Virginie; Desroches, Louis-Benoit; McNeil, Michael; Saheb, Yamina

2010-05-03T23:59:59.000Z

7

Estimate of Cost-Effective Potential for Minimum Efficiency Performanc...  

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

Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts Title Estimate of...

8

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

Energy Initiative Life-cycle Cost Analysis Canada and Mexico –baseline energy consumption. Canada’s and Mexico’s marketsMexico minimum efficiency performance standard million tons (of CO 2 ) national equipment cost National Electric Manufacturers Association national energy

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

9

Minimum Efficiency Standards for Electric Motors | Department of Energy  

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

Minimum Efficiency Standards for Electric Motors Minimum Efficiency Standards for Electric Motors Minimum Efficiency Standards for Electric Motors October 7, 2013 - 11:28am Addthis Section 313 of the Energy Independence and Security Act (EISA) of 2007 raised Federal minimum efficiency standards for general-purpose, single-speed, polyphase induction motors of 1 to 500 horsepower (hp). This new standard took effect in December 2010. The new minimum efficiency levels match FEMP's performance requirement for these motors. As a result of this increase in mandatory minimum standards and combined with the lack of significant availability of motors exceeding these standards, FEMP is suspending the purchasing specification for electric motors. Federal buyers may select for purchase any motor that meets design requirements.

10

Potential Impact of Adopting Maximum Technologies as Minimum Efficiency Performance Standards in the U.S. Residential Sector  

E-Print Network (OSTI)

buildings/appliance_standards/residential/cac_heatp umps_buildings/appliance_standards/residential/fb_tsd_09 07.htmlof Energy Efficiency Standards and Labeling Programs, LBNL

Letschert, Virginie

2010-01-01T23:59:59.000Z

11

Federal Energy Management Program: Minimum Efficiency Standards for  

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

Minimum Efficiency Minimum Efficiency Standards for Electric Motors to someone by E-mail Share Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Facebook Tweet about Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Twitter Bookmark Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Google Bookmark Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Delicious Rank Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Digg Find More places to share Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on AddThis.com... Energy-Efficient Products Federal Requirements Covered Product Categories

12

Potential Impact of Adopting Maximum Technologies as Minimum Efficiency Performance Standards in the U.S. Residential Sector  

E-Print Network (OSTI)

The US Department of Energy (US DOE) has placed lighting andThe U.S. Department of Energy (U.S. DOE) has placed lightingfr_tsd.html U.S. Department of Energy - Energy Efficiency &

Letschert, Virginie

2010-01-01T23:59:59.000Z

13

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

Lifetimes of Residential Appliances. HVAC&R Research 17,of High-Efficiency Appliances in the U.S. ResidentialIndian Households From Improved Appliance Efficiency. BUENAS

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

14

An Efficient Algorithm for Computing Robust Minimum Capacity st Cuts  

E-Print Network (OSTI)

Mar 20, 2008 ... Abstract: The Minimum Capacity s-t Cut Problem (Min Cut) is an intensively studied problem in combinatorial optimization. In this paper, we ...

15

An Efficient Algorithm for Computing Robust Minimum Capacity st Cuts  

E-Print Network (OSTI)

Apr 3, 2008 ... The Minimum Capacity s-t Cut Problem (Min Cut) is an intensively ... In this paper, we study Min Cut when arc capacities are uncertain but ...

16

Minimum/maximum excitation limiter performance goals for small generation  

SciTech Connect

Small generators connected to the utility system often act as followers as they tend to follow system bus voltage variations. For the lack of kVA capacity, small machines tend to be susceptible to becoming over or under excited (excessive Vars in or Vars out of the generator) as the voltage regulator tries to maintain its setpoint with variations in system bus voltage. Minimum and maximum excitation limiters are utilized to limit the voltage regulator characteristic response to system bus voltage changes, that can otherwise result in machine overheating and/or pulling out of synchronization. This paper reviews the operating performance of minimum and maximum excitation limiters used on small machines, and provides the user typical performance expectations. The examples will highlight both main field and exciter field applications. Lastly, conditions will be reviewed that may occur during excitation limiter initial startup that can affect their ability to be initially tuned.

Eberly, T.W.; Schaefer, R.C.

1995-12-01T23:59:59.000Z

17

Boulder, Colorados SmartRegs: Minimum Performance Standards for Residential Rental Housing  

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

Policy Brief is an excerpt from the report: "Delivering Energy Efficiency to Middle Income Single Policy Brief is an excerpt from the report: "Delivering Energy Efficiency to Middle Income Single Family Households." For the full report and other resources visit: http://middleincome.lbl.gov March 20, 2012 Boulder, Colorado's SmartRegs: Minimum Performance Standards for Residential Rental Housing The Case for Performance Standards The City of Boulder's Climate Action Plan calls for greenhouse gas emissions reductions across all sectors of the community (e.g., buildings, transportation and industry). Energy conservation in new and existing buildings plays a key role in the plan's ambitious goals. In 2006, Boulder residents overwhelmingly approved a Climate Action Tax to fund Climate Action Plan efforts. For more than a decade the city has been incrementally strengthening minimum energy efficiency standards for residential

18

Performance of the ATLAS Minimum Bias Trigger in pp collisions at the LHC  

E-Print Network (OSTI)

The early physics program at the ATLAS experiment includes measuring the basic properties of proton proton collisions, such as charged particle multiplicities, in order to constrain phenomenological models of soft interactions in the LHC energy regime. An inclusive and well understood trigger is crucial to minimize any possible bias in the event selection. The ATLAS experiment uses two complementary types of minimum bias triggers. A scintillator trigger sensitive to the forward regions of 2.1trigger based on counting hits in the inner tracking detector has provided a useful control sample. The performance and efficiency measurements of these triggers and detectors will be presented.

Lauren Tompkins

2010-09-30T23:59:59.000Z

19

Performance of the ATLAS Minimum Bias Trigger in pp collisions at the LHC  

E-Print Network (OSTI)

The early physics program at the ATLAS experiment includes measuring the basic properties of proton proton collisions, such as charged particle multiplicities, in order to constrain phenomenological models of soft interactions in the LHC energy regime. An inclusive and well understood trigger is crucial to minimize any possible bias in the event selection. The ATLAS experiment uses two complementary types of minimum bias triggers. A scintillator trigger sensitive to the forward regions of 2.1trigger based on counting hits in the inner tracking detector has provided a useful control sample. The performance and efficiency measurements of these triggers and detectors will be presented.

Tompkins, Lauren

2010-01-01T23:59:59.000Z

20

Bringing Energy Efficiency to High Performance Computing  

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

Bringing Energy Efficiency to High Performance Computing Oak Ridge National Laboratory's Jaguar Supercomputer William Tschudi September 2013 The ability of high performance...

Note: This page contains sample records for the topic "minimum efficiency performance" 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

The quadratic minimum spanning tree problem: A lower bounding procedure and an efficient search algorithm  

Science Conference Proceedings (OSTI)

In this paper we consider the quadratic minimum spanning tree problem (QMSTP) which is known to be NP-hard. Given a complete graph, the QMSTP consists of finding a minimum spanning tree (MST) where interaction costs between pairs of edges are prescribed. ... Keywords: Lagrangian relaxation, Local search, Quadratic minimum spanning tree problem

Temel Öncan; Abraham P. Punnen

2010-10-01T23:59:59.000Z

22

Energy Efficiency Opportunities in Federal High Performance Computing...  

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

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

23

Energy-Efficient Office Technologies Performance Evaluation  

Science Conference Proceedings (OSTI)

In response to the significant electrical end use of commercial office equipment, the U.S. EPA, with help from EPRI and member utilities, began the Energy Star program, which created energy efficiency standards for computers (CPUs), monitors, printers, copiers, fax machines, and controlling devices. This report describes methods for evaluating the performance of office equipment, typical load shapes for a variety of office equipment, and the results of field monitoring. Such information will help utility...

1997-04-28T23:59:59.000Z

24

Performance Contracting and Energy Efficiency in the State Government Market  

E-Print Network (OSTI)

incentives, technical xiv Performance Contracting and Energy Efficiency in the Stateincentives, technical assistance, and Performance Contracting and Energy Efficiency in the Stateincentives provided through utility ratepayer-funded energy efficiency programs to state

Bharvirkar, Ranjit

2008-01-01T23:59:59.000Z

25

Energy Efficiency Opportunities in Federal High Performance Computing Data Centers  

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

Case study describes an outline of energy efficiency opportunities in federal high performance computing data centers.

26

Example Performance Targets and Efficiency Packages Greensburg, Kansas (Presentation)  

SciTech Connect

This presentation shows the energy performance targets and efficiency packages for residential buildings in Greensburg, Kansas.

Anderson, R.

2008-01-01T23:59:59.000Z

27

Power Efficiency and Performance with ORNL's Cray XK7 Titan  

Science Conference Proceedings (OSTI)

This presentation provides some insights into ORNL's Cray XK7 Titan system and its power efficiency and performance. Keywords: Energy Efficiency, Power Profile

Jim Rogers

2012-11-01T23:59:59.000Z

28

Improving Real World Efficiency of High Performance Buildings  

E-Print Network (OSTI)

Improving Real World Efficiency of High Performance Buildings Buildings End-Use Energy Efficiency Research www.energy.ca.gov/research/buildings February 2012 The Issue Highperformance buildings efficiency in highperformance buildings, however, are not always realized in practice. Addressing

29

Development of advanced drilling, completion, and stimulation systems for minimum formation damage and improved efficiency: A program overview  

SciTech Connect

The Department of Energy`s (DOE) Natural Gas Resource and Extraction Program consists of industry/government co-sponsored research, development, and demonstration (RD&D) projects, which focus on gas recovery from both conventional and nonconventional resources. The Drilling, Completion, and Stimulation (DCS) Project focuses on advanced, non-damaging technology systems and equipment for improving gas recovery from conventional and nonconventional reservoirs. As operators move from development of current day economically attractive gas-field development to the lower permeability geologic regions of domestic onshore plays, increasing the emphasis on minimum formation damage DCS will permit economic development of gas reserves. The objective of the Project is to develop and demonstrate cost-effective, advanced technology to accelerate widespread use and acceptance of minimum formation damage DCS systems. The goal of this product development effort is to reduce costs and improve the overall efficiency of vertical, directional, and horizontally drilled wells in gas formations throughout the US. The current focus of the Project is on the development of underbalanced drilling technology and minimum formation damage stimulation technology concurrently with the appropriate completion hardware to improve the economics of domestic natural gas field development. Ongoing drilling technology projects to be discussed include development of an electromagnetic measurement while drilling system for directional and horizontal drilling in underbalanced drilling applications and the development of a steerable air percussion drilling system for hard formation drilling and improved penetration rates. Ongoing stimulation technology projects to be discussed include introduction of carbon dioxide/sand fracturing technology for minimal formation damage.

Layne, A.W.; Yost, A.B. II

1994-07-01T23:59:59.000Z

30

Performance Contracting and Energy Efficiency in the State Government Market  

E-Print Network (OSTI)

State Government Market information about energy efficiencyEnergy Efficiency in the State Government Market assistance, and informationEnergy Performance Contracting Activity Using available baseline information on the state government market

Bharvirkar, Ranjit

2008-01-01T23:59:59.000Z

31

Industrial and Process Efficiency Performance Incentives | Department of  

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

Industrial and Process Efficiency Performance Incentives Industrial and Process Efficiency Performance Incentives Industrial and Process Efficiency Performance Incentives < Back Eligibility Industrial Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Manufacturing Other Heating Appliances & Electronics Commercial Lighting Lighting Maximum Rebate 50% of project cost, up to $5 million per facility per year (electric) or $1 million per facility per year (gas) Program Info Funding Source Energy Efficiency Portfolio Standard (EEPS)/System Benefits Charge (SBC) Expiration Date 12/31/2015 State New York Program Type State Rebate Program Rebate Amount Electric Process and Energy Efficiency: $0.12/kWh (upstate) or $0.16/kWh (downstate) Gas Process and Energy Efficiency: $15/MMBtu (upstate) or $20/MMBtu

32

Energy Efficiency Fund (Electric) - Home Energy Solutions and Performance  

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

Electric) - Home Energy Solutions and Electric) - Home Energy Solutions and Performance Programs Energy Efficiency Fund (Electric) - Home Energy Solutions and Performance Programs < Back Eligibility Low-Income Residential Multi-Family Residential Residential Savings Category Home Weatherization Commercial Weatherization Sealing Your Home Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Other Ventilation Heat Pumps Commercial Lighting Lighting Water Heating Windows, Doors, & Skylights Program Info Funding Source Energy Efficiency Fund State Connecticut Program Type Utility Rebate Program Rebate Amount Varies Provider Customer Service The Energy Efficiency Fund, funded by Connecticut's public benefits charge, provides home energy efficiency rebate programs to customers of The

33

Estimate of Technical Potential for Minimum Efficiency Performance Standards in 13 Major World Economies  

E-Print Network (OSTI)

and ‘450 ppm’ scenarios in 2030. BUENAS Version 04-23-12 Revin 2030 (TWh) . 25Standard in 2030 (Mt CO 2 ) .. 27

Letschert, Virginie

2013-01-01T23:59:59.000Z

34

Estimate of Technical Potential for Minimum Efficiency Performance Standards in 13 Major World Economies  

E-Print Network (OSTI)

in practice current LED bulbs are generally no better thanof 100- lm/W LED general-purpose light bulbs is achievable,incandescent light bulbs. Although white LEDs can achieve

Letschert, Virginie

2013-01-01T23:59:59.000Z

35

Analysis of Minimum Efficiency Performance Standards for Residential General Service Lighting in Chile  

E-Print Network (OSTI)

Standard for Residential Lighting in Chile, 2010 USResidential General Service Lighting in Chile Virginie E.focus on a regulation for lighting that would ban the sale

Letschert, Virginie E.

2012-01-01T23:59:59.000Z

36

Analysis of Minimum Efficiency Performance Standards for Residential General Service Lighting in Chile  

E-Print Network (OSTI)

by comparing the national energy consumption of the productNational Operating Cost (NOC) is the total (site) energy consumptionNational utility and environmental impacts, however are driven by primary energy consumption,

Letschert, Virginie E.

2012-01-01T23:59:59.000Z

37

Analysis of Minimum Efficiency Performance Standards for Residential General Service Lighting in Chile  

E-Print Network (OSTI)

equipment costs paid, electricity bill dollars saved, and12$ back though its electricity bill savings. Considering

Letschert, Virginie E.

2012-01-01T23:59:59.000Z

38

Analysis of Minimum Efficiency Performance Standards for Residential General Service Lighting in Chile  

E-Print Network (OSTI)

Carbon dioxide emissions savings (CES) are calculated from energy savings, by applying carbon factors

Letschert, Virginie E.

2012-01-01T23:59:59.000Z

39

Estimate of Technical Potential for Minimum Efficiency Performance Standards in 13 Major World Economies  

E-Print Network (OSTI)

Electric Motors Industry Total EU JAP Total When we consider carbon emissions reductions (Tables 22 and 23) on top of energy savings (Electric Motors Industry Total BRA EU JAP KOR MEX Total Among the key results are: By 2030, 80 percent of the energy savings

Letschert, Virginie

2013-01-01T23:59:59.000Z

40

A study in hybrid vehicle architectures : comparing efficiency and performance  

E-Print Network (OSTI)

This paper presents a comparison of performance and efficiencies for four vehicle power architectures; the internal combustion engine (ICE), the parallel hybrid (i.e. Toyota Prius), the serial hybrid (i.e. Chevrolet Volt), ...

Cotter, Gavin M

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Performance of the ATLAS Trigger Reconstruction for Minimum Bias Events, Missing Transverse Energy and Jets in pp-collisions at ?s = 7 TeV  

E-Print Network (OSTI)

Since the restart of the LHC, ATLAS has successfully recorded data at ?s = 0.9 and 7 TeV. The ATLAS trigger strategy realized a step-wise activation of the three level trigger system, starting with hardware-based first-level (L1) triggers and moving with increasing luminosities to the deployment of the software-based high-level triggers (HLT). We will present L1 and HLT triggers and their performance on 7 TeV collision data, whose use case range from the measurements of inelastic charged particle spectra to new physics searches. We will focus on triggers selecting inelastic pp-collisions (minimum bias), missing transverse energies (missing ET ) and jets. Different minimum bias triggers based of central tracking and forward detector components, their efficiencies as well as possible biases are presented. We highlight missing ET triggers, which require the magnitude of the vector sum of all transverse energies to exceed some threshold. While look-up-tables allow fast trigger decisions at L1, the full calorime...

Kwee, R E; The ATLAS collaboration

2010-01-01T23:59:59.000Z

42

Introduction to the Performance of the ATLAS Trigger Reconstruction for Minimum Bias Events, Missing Transverse Energy and Jets in pp-collisions at ?s = 7 TeV  

E-Print Network (OSTI)

Since the restart of the LHC, ATLAS has successfully recorded data at sqrt{s} = 0.9 and 7 TeV. The ATLAS trigger strategy realised a step-wise activation of the three level trigger system, starting with hardware-based first-level (L1) triggers and moving with increasing luminosities to the deployment of the software-based high-level triggers (HLT). We will present L1 and HLT triggers and their performance on 7 TeV collision data, whose use case range from the measuremens of inelastic charged particle spectra to new physics searches. We will focus on triggers selecting inelastic pp-collsions (minimum bias), missing transverse energies (missing E_{T}), jets and bjets. Different minimum bias triggers based of central tracking and forward detector components, their efficiencies as well as possible biases are presented. We highlight missing E_{T} triggers, which require the magnitude of the vector sum of all transverse energies to exceed some threshold. While look-up-tables allow fast trigger decisions at L1, the ...

Kwee, R E; The ATLAS collaboration

2010-01-01T23:59:59.000Z

43

TriggerPerformance of the ATLAS Trigger Reconstruction for Minimum Bias Events, Missing Transverse Energy and Jets in pp-collisions at ?s = 7 TeV  

E-Print Network (OSTI)

Since the restart of the LHC, ATLAS has successfully recorded data at sqrt{s} = 0.9 and 7 TeV. The ATLAS trigger strategy realised a step-wise activation of the three level trigger system, starting with hardware-based first-level (L1) triggers and moving with increasing luminosities to the deployment of the software-based high-level triggers (HLT). We will present L1 and HLT triggers and their performance on 7 TeV collision data, whose use case range from the measuremens of inelastic charged particle spectra to new physics searches. We will focus on triggers selecting inelastic pp-collsions (minimum bias), missing transverse energies (missing E_{T}), jets and bjets. Different minimum bias triggers based of central tracking and forward detector components, their efficiencies as well as possible biases are presented. We highlight missing E_{T} triggers, which require the magnitude of the vector sum of all transverse energies to exceed some threshold. While look-up-tables allow fast trigger decisions at L1, the ...

Kwee, R E; The ATLAS collaboration

2010-01-01T23:59:59.000Z

44

Development of a Performance-based Industrial Energy Efficiency Indicator  

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

Development of a Performance-based Industrial Energy Efficiency Development of a Performance-based Industrial Energy Efficiency Indicator for Food Processing Plants Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports

45

Energy Efficiency Fund (Gas) - Home Energy Solutions and Performance  

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

Gas) - Home Energy Solutions and Gas) - Home Energy Solutions and Performance Programs Energy Efficiency Fund (Gas) - Home Energy Solutions and Performance Programs < Back Eligibility Low-Income Residential Multi-Family Residential Residential Savings Category Home Weatherization Commercial Weatherization Sealing Your Home Other Ventilation Appliances & Electronics Water Heating Program Info State Connecticut Program Type Utility Rebate Program Rebate Amount Varies Provider Customer Service The Energy Efficiency Fund, funded by Connecticut's public benefits charge, provides home energy efficiency rebate programs to customers of The Connecticut Light and Power Company and The United Illuminating Company, Connecticut Natural Gas, Southern Connecticut Gas, and Yankeegas customers. The Home Energy Solutions Program provides weatherization assistance to any

46

Principles of energy efficiency in high performance computing  

Science Conference Proceedings (OSTI)

High Performance Computing (HPC) is a key technology for modern researchers enabling scientific advances through simulation where experiments are either technically impossible or financially not feasible to conduct and theory is not applicable. However, ... Keywords: HPC, PUE, energy efficiency, high performance computing, power usage effectiveness

Axel Auweter; Arndt Bode; Matthias Brehm; Herbert Huber; Dieter Kranzlmüller

2011-08-01T23:59:59.000Z

47

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

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

Home Performance with Energy Star High Efficiency Measure Incentive Home Performance with Energy Star High Efficiency Measure Incentive (HEMI) Home Performance with Energy Star High Efficiency Measure Incentive (HEMI) < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Cooling Appliances & Electronics Sealing Your Home Ventilation Manufacturing Commercial Lighting Lighting Water Heating Maximum Rebate $3,000 Program Info State New York Program Type State Rebate Program Rebate Amount 10% of project costs Provider New York State Energy Research and Development Authority The New York State Research and Development Authority (NYSERDA) offers an incentive for homeowners of 1-4 homes that participate in the Home Performance with Energy Star program. The program entitles the participant

48

Yankee hood performance studies; The effect of air balance on thermal efficiency  

Science Conference Proceedings (OSTI)

With today's ever-increasing production rates on tissue-grade machines, many mills experience a need to increase the contribution of Yankee hoods to drying. Until the cylinder is replaced, its contribution to drying is fixed at its maximum drying rate. Consequently, the hoods should be checked routinely to ensure that they run optimally. Most air systems are not gas-or oil-fired, in contrast to the original steam-heated designs. As a result, Yankee air systems are energy intensive. A proper hood balance ensures minimum thermal consumption, or optimum thermal efficiency. Thermal efficiency is defined as the Btu's consumed by the burner per pound of water evaporated by hood. A simple engineering survey, or system examination, allows the papermaker to verify hood performance and balance the air system. In this paper typical data from a such a survey are shown. These surveys can often lead to considerably savings in burner fuel.

Schukov, V. (Yankee Air Systems (US)); Wozny, J. (Enerquin Air Inc., Montreal, Quebec (CA))

1991-04-01T23:59:59.000Z

49

Power Efficiency in High Performance Computing Shoaib Kamil  

E-Print Network (OSTI)

of 192 cores per cabinet. The power feed to each cabinet is 208 VAC 3-phase and is capable of handling 25 KW per rack. Each cabinet has a single 92 percent efficient power supply at the bottom of the rack system performance (ssp) metric. LBNL Tech Report 58868, 2005. [13] L. Oliker, A. Canning, J. Carter, J

50

Energy Efficiency Opportunities in Federal High Performance Computing Data Centers  

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

Efficiency Efficiency Opportunities in Federal High Performance Computing Data Centers Prepared for the U.S. Department of Energy Federal Energy Management Program By Lawrence Berkeley National Laboratory Rod Mahdavi, P.E. LEED A.P. September 2013 2 Contacts Rod Mahdavi, P.E. LEED AP Lawrence Berkeley National Laboratory (510) 495-2259 rmahdavi@lbl.gov For more information on FEMP: Will Lintner, P.E. Federal Energy Management Program U.S. Department of Energy (202) 586-3120 william.lintner@ee.doe.gov 3 Contents Executive Summary .................................................................................................... 6 Overview .................................................................................................................... 7

51

Certifying Industrial Energy Efficiency Performance: Aligning Management, Measurement, and Practice to Create Market Value  

E-Print Network (OSTI)

Certifying Industrial Energy Efficiency Performance:to improve their energy efficiency- as evidenced by the 98%the renewed interest in energy efficiency worldwide and the

McKane, Aimee; Scheihing, Paul; Williams, Robert

2008-01-01T23:59:59.000Z

52

Performance Contracting and Energy Efficiency in the State Government Market  

E-Print Network (OSTI)

characteristics and energy efficiency activity 46 Tablecharacteristics and energy efficiency activity . 47 Tablecharacteristics and energy efficiency activity.. 49

Bharvirkar, Ranjit

2008-01-01T23:59:59.000Z

53

Performance Contracting and Energy Efficiency in the State Government Market  

SciTech Connect

There is growing interest in energy efficiency (EE) among state policymakers as a result of increasing environmental concerns, rising electricity and natural gas prices, and lean economic times that motivate states to look more aggressively for cost-saving opportunities in public sector buildings. One logical place for state policymakers to demonstrate their commitment to energy efficiency is to 'lead by example' by developing and implementing strategies to reduce the energy consumption of state government facilities through investments in energy efficient technologies. Traditionally, energy efficiency improvements at state government facilities are viewed as a subset in the general category of building maintenance and construction. These projects are typically funded through direct appropriations. However, energy efficiency projects are often delayed or reduced in scope whereby not all cost-effective measures are implemented because many states have tight capital budgets. Energy Savings Performance Contracting (ESPC) offers a potentially useful strategy for state program and facility managers to proactively finance and develop energy efficiency projects. In an ESPC project, Energy Service Companies (ESCOs) typically guarantee that the energy and cost savings produced by the project will equal or exceed all costs associated with implementing the project over the term of the contract. ESCOs typically provide turnkey design, installation, and maintenance services and also help arrange project financing. Between 1990 and 2006, U.S. ESCOs reported market activity of {approx}$28 Billion, with about {approx}75-80% of that activity concentrated in the institutional markets (K-12 schools, colleges/universities, state/local/federal government and hospitals). In this study, we review the magnitude of energy efficiency investment in state facilities and identify 'best practices' while employing performance contracting in the state government sector. The state government market is defined to include state offices, state universities, correctional facilities, and other state facilities. This study is part of a series of reports prepared by Lawrence Berkeley National Laboratory (LBNL) and the National Association of Energy Services Companies (NAESCO) on the ESCO market and industry trends. The scope of previous reports was much broader: Goldman et al. (2002) analyzed ESCO project costs and savings in public and private sector facilities, Hopper et al. (2005) focused on ESCO project activity in all public and institutional sectors, while Hopper et al (2007) provided aggregate results of a comprehensive survey of ESCOs on current industry activity and future prospects. We decided to focus the current study on ESCO and energy efficiency activity and potential market barriers in the state government market because previous studies suggested that this institutional sector has significant remaining energy efficiency opportunities. Moreover, ESCO activity in the state government market has lagged behind other institutional markets (e.g., K-12 schools, local governments, and the federal market). Our primary objectives were as follows: (1) Assess existing state agency energy information and data sources that could be utilized to develop performance metrics to assess progress among ESPC programs in states; (2) Conduct a comparative review of the performance of selected state ESPC programs in reducing energy usage and costs in state government buildings; and (3) Delineate the extent to which state government sector facilities are implementing energy efficiency projects apart from ESPC programs using other strategies (e.g. utility ratepayer-funded energy efficiency programs, loan funds).

Bharvirkar, Ranjit; Goldman, Charles; Gilligan, Donald; Singer, Terry E.; Birr, David; Donahue, Patricia; Serota, Scott

2008-11-14T23:59:59.000Z

54

Performance Contracting and Energy Efficiency in the State Government Market  

SciTech Connect

There is growing interest in energy efficiency (EE) among state policymakers as a result of increasing environmental concerns, rising electricity and natural gas prices, and lean economic times that motivate states to look more aggressively for cost-saving opportunities in public sector buildings. One logical place for state policymakers to demonstrate their commitment to energy efficiency is to 'lead by example' by developing and implementing strategies to reduce the energy consumption of state government facilities through investments in energy efficient technologies. Traditionally, energy efficiency improvements at state government facilities are viewed as a subset in the general category of building maintenance and construction. These projects are typically funded through direct appropriations. However, energy efficiency projects are often delayed or reduced in scope whereby not all cost-effective measures are implemented because many states have tight capital budgets. Energy Savings Performance Contracting (ESPC) offers a potentially useful strategy for state program and facility managers to proactively finance and develop energy efficiency projects. In an ESPC project, Energy Service Companies (ESCOs) typically guarantee that the energy and cost savings produced by the project will equal or exceed all costs associated with implementing the project over the term of the contract. ESCOs typically provide turnkey design, installation, and maintenance services and also help arrange project financing. Between 1990 and 2006, U.S. ESCOs reported market activity of {approx}$28 Billion, with about {approx}75-80% of that activity concentrated in the institutional markets (K-12 schools, colleges/universities, state/local/federal government and hospitals). In this study, we review the magnitude of energy efficiency investment in state facilities and identify 'best practices' while employing performance contracting in the state government sector. The state government market is defined to include state offices, state universities, correctional facilities, and other state facilities. This study is part of a series of reports prepared by Lawrence Berkeley National Laboratory (LBNL) and the National Association of Energy Services Companies (NAESCO) on the ESCO market and industry trends. The scope of previous reports was much broader: Goldman et al. (2002) analyzed ESCO project costs and savings in public and private sector facilities, Hopper et al. (2005) focused on ESCO project activity in all public and institutional sectors, while Hopper et al (2007) provided aggregate results of a comprehensive survey of ESCOs on current industry activity and future prospects. We decided to focus the current study on ESCO and energy efficiency activity and potential market barriers in the state government market because previous studies suggested that this institutional sector has significant remaining energy efficiency opportunities. Moreover, ESCO activity in the state government market has lagged behind other institutional markets (e.g., K-12 schools, local governments, and the federal market). Our primary objectives were as follows: (1) Assess existing state agency energy information and data sources that could be utilized to develop performance metrics to assess progress among ESPC programs in states; (2) Conduct a comparative review of the performance of selected state ESPC programs in reducing energy usage and costs in state government buildings; and (3) Delineate the extent to which state government sector facilities are implementing energy efficiency projects apart from ESPC programs using other strategies (e.g. utility ratepayer-funded energy efficiency programs, loan funds).

Bharvirkar, Ranjit; Goldman, Charles; Gilligan, Donald; Singer, Terry E.; Birr, David; Donahue, Patricia; Serota, Scott

2008-11-14T23:59:59.000Z

55

Energy efficiency and performance of solid state ballasts  

SciTech Connect

The performance of solid state ballasts for operating fluorescent lamps measured in a controlled laboratory environment are described and compared to the performance of typical core-coil type ballasts. Parameters of interest include efficiency, conducted and radiated EMI and results of some accelerated lamp life tests. The experimental design of the demonstration to retrofit three floors of an office building with solid state ballasts to evaluate their reliability and energy savings in a variety of applications is described. The most recent experimental results are presented.

Verderber, R.; Selkowitz, S.; Berman, S.

1978-06-01T23:59:59.000Z

56

Meaningful Energy Efficiency Performance Metrics for the Process Industries  

E-Print Network (OSTI)

An effective energy performance benchmarking should include a consideration of production rate, product specifications, feedstock mix, and process type, in addition to thermodynamics and economics. Unfortunately, there is no accepted industry standard for developing Energy Efficiency (EE) performance metrics for the chemical process industries, and published literature on the subject is extremely sparse. This paper will present a comprehensive system of EPIs as applied in a complex multi-product multi-plant organization in the oil and gas industry. Four categories of EPIs are recommended: • By equipment • By process unit • By product • By business unit. It will be shown how each type of EPI fulfills a specific business objective in the organization. Successes and failures are described, and recommendations are provided. The principles and practices outlined in this paper are generally applicable, and will hopefully lead to a standard methodology for EE performance reporting.

Kumana, J. D.; Sidhwa, N. R.

2009-05-01T23:59:59.000Z

57

Performance Contracting and Energy Efficiency in the State Government Market  

E-Print Network (OSTI)

on the energy costs and energy efficiency at Illinois’significant and cost-effective energy efficiency resourcesimplementation of cost-effective energy efficiency projects.

Bharvirkar, Ranjit

2008-01-01T23:59:59.000Z

58

Measure Guideline: Energy-Efficient Window Performance and Selection  

SciTech Connect

This document provides guidelines for the selection of energy-efficient windows in new and existing residential construction in all US climate zones. It includes information on window products, their attributes and performance. It provides cost/benefit information on window energy savings as well as information on non-energy benefits such as thermal comfort and reduced HVAC demands. The document also provides information on energy impacts of design decisions such as window orientation, total glazing area and shading devices and conditions. Information on resources for proper window installation is included as well. This document is for builders, homeowners, designers and anyone making decisions about selecting energy efficient window. It is intended to complement other Building America information and efforts.

Carmody, J.; Haglund, K.

2012-11-01T23:59:59.000Z

59

High Performance Healthcare Buildings: A Roadmap to Improved Energy Efficiency  

E-Print Network (OSTI)

Roadmap to Improved Energy Efficiency iii 11-Sept-2009 ListA Roadmap to Improved Energy Efficiency 11-Sept-2009 Topic /A Roadmap to Improved Energy Efficiency 11-Sept-2009 Topic /

Singer, Brett C.

2010-01-01T23:59:59.000Z

60

Efficiency Vermont - Home Performance with ENERGY STAR (Existing...  

Open Energy Info (EERE)

DSIRE Review 2010-03-31 References DSIRE1 Summary Efficiency Vermont works with homeowners on comprehensive energy efficiency projects and offers several financial incentives....

Note: This page contains sample records for the topic "minimum efficiency performance" 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

COOLING FAN AND SYSTEM PERFORMANCE AND EFFICIENCY IMPROVEMENTS  

Science Conference Proceedings (OSTI)

Upcoming emissions regulations (Tiers 3, 4a and 4b) are imposing significantly higher heat loads on the cooling system than lesser regulated machines. This work was a suite of tasks aimed at reducing the parasitic losses of the cooling system, or improving the design process through six distinct tasks: 1. Develop an axial fan that will provide more airflow, with less input power and less noise. The initial plan was to use Genetic Algorithms to do an automated fan design, incorporating forward sweep for low noise. First and second generation concepts could not meet either performance or sound goals. An experienced turbomachinery designer, using a specialized CFD analysis program has taken over the design and has been able to demonstrate a 5% flow improvement (vs 10% goal) and 10% efficiency improvement (vs 10% goal) using blade twist only. 2. Fan shroud developments, using an 'aeroshroud' concept developed at Michigan State University. Performance testing at Michigan State University showed the design is capable of meeting the goal of a 10% increase in flow, but over a very narrow operating range of fan performance. The goal of 10% increase in fan efficiency was not met. Fan noise was reduced from 0 to 2dB, vs. a goal of 5dB at constant airflow. The narrow range of fan operating conditions affected by the aeroshroud makes this concept unattractive for further development at this time 3. Improved axial fan system modeling is needed to accommodate the numbers of cooling systems to be redesigned to meet lower emissions requirements. A CFD fan system modeling guide has been completed and transferred to design engineers. Current, uncontrolled modeling practices produce flow estimates in some cases within 5% of measured values, and in some cases within 25% of measured values. The techniques in the modeling guide reduced variability to the goal of + 5% for the case under study. 4. Demonstrate the performance and design versatility of a high performance fan. A 'swept blade mixed flow' fan was rapid prototyped from cast aluminum for a performance demonstration on a small construction machine. The fan was mounted directly in place of the conventional fan (relatively close to the engine). The goal was to provide equal airflow at constant fan speed, with 75% of the input power and 5 dB quieter than the conventional fan. The result was a significant loss in flow with the prototype due to its sensitivity to downstream blockage. This sensitivity to downstream blockage affects flow, efficiency, and noise all negatively, and further development was terminated. 5. Develop a high efficiency variable speed fan drive to replace existing slipping clutch style fan drives. The goal for this task was to provide a continuously variable speed fan drive with an efficiency of 95%+ at max speed, and losses no greater than at max speed as the fan speed would vary throughout its entire speed range. The process developed to quantify the fuel savings potential of a variable speed fan drive has produced a simple tool to predict the fuel savings of a variable speed drive, and has sparked significant interest in the use of variable speed fan drive for Tier 3 emissions compliant machines. The proposed dual ratio slipping clutch variable speed fan drive can provide a more efficient system than a conventional single ratio slipping clutch fan drive, but could not meet the established performance goals of this task, so this task was halted in a gate review prior to the start of detailed design. 6. Develop a cooling system air filtration device to allow the use of automotive style high performance heat exchangers currently in off road machines. The goal of this task was to provide a radiator air filtration system that could allow high fin density, louvered radiators to operate in a find dust application with the same resistance to fouling as a current production off-road radiator design. Initial sensitivity testing demonstrated that fan speed has a significant impact on the fouling of radiator cores due to fine dusts, so machines equipped with continuously variabl

Ronald Dupree

2005-07-31T23:59:59.000Z

62

Measured Performance of Energy-Efficient Computer Systems  

E-Print Network (OSTI)

The intent of this study is to explore the potential performance of both Energy Star computers/printers and add-on control devices individually, and their expected savings if collectively applied in a typical office building in a hot and humid climate. Recent surveys have shown that the use of personal computer systems in commercial office buildings is expanding rapidly. The energy consumption of such a growing end-use also has a significant impact on the total building power demand. In warmer climates, office equipment energy use has important implications for building cooling loads as well as those directly associated with computing tasks. Recently, the Environmental Protection Agency (EPA) has developed an Energy Star (ES) rating system intended to endorse more efficient equipment. To research the comparative performance of conventional and low-energy computer systems, four Energy Star computer systems and two computer systems equipped with energy saving devices were monitored for power demand. Comparative data on the test results are summarized. In addition, a brief analysis uses the DOE-2.1E computer simulation to examine the impact of the test results and HVAC interactions if generically applied to computer systems in a modern office building in Florida's climate.

Floyd, D. B.; Parker, D. S.

1996-01-01T23:59:59.000Z

63

High Performance Healthcare Buildings: A Roadmap to Improved Energy Efficiency  

E-Print Network (OSTI)

tools to evaluate cost and energy implications of efficiencytools to evaluate cost and energy implications of efficiencyand low first cost, not energy efficiency. Utilization of “

Singer, Brett C.

2010-01-01T23:59:59.000Z

64

High Performance Healthcare Buildings: A Roadmap to Improved Energy Efficiency  

E-Print Network (OSTI)

for efficient and meaningful sub-metering. • Develop&architecture to facilitate sub-metering • Include sub-metersintermingled, making sub-metering expensive and complicated.

Singer, Brett C.

2010-01-01T23:59:59.000Z

65

Performance Contracting and Energy Efficiency in the State Government Market  

E-Print Network (OSTI)

providing preliminary energy audits or feasibility studiesCost-Effective Energy Energy Audit Energy Efficiency Projectmethod for conducting energy audits and implementing

Bharvirkar, Ranjit

2008-01-01T23:59:59.000Z

66

Performance Contracting and Energy Efficiency in the State Government Market  

E-Print Network (OSTI)

the State Government Market Energy Performance Contractingin the State Government Market Energy Performance Contractsin size of the energy services market among states, we

Bharvirkar, Ranjit

2008-01-01T23:59:59.000Z

67

Potential Impact of Adopting Maximum Technologies as Minimum Efficiency Performance Standards in the U.S. Residential Sector  

E-Print Network (OSTI)

Gas and LPG consumption by 2030 The methodology results inin natural gas consumption by 2030 resulting from upcomingthe 2008- 2013 trend to 2030. Based on these assumptions,

Letschert, Virginie

2010-01-01T23:59:59.000Z

68

Potential Impact of Adopting Maximum Technologies as Minimum Efficiency Performance Standards in the U.S. Residential Sector  

E-Print Network (OSTI)

US to achieve 18% reduction in its electricity demand compared to the base case by 2030 and 11% in Natural Gas and LPG consumption.

Letschert, Virginie

2010-01-01T23:59:59.000Z

69

Potential Impact of Adopting Maximum Technologies as Minimum Efficiency Performance Standards in the U.S. Residential Sector  

E-Print Network (OSTI)

appliance_standards/residential/heating_p roducts_fr_appliance_standards/residential/cac_heatp umps_new_buildings/appliance_standards/residential/fb_tsd_09 07.html

Letschert, Virginie

2010-01-01T23:59:59.000Z

70

Development of a Performance-based Industrial Energy Efficiency...  

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

report describes the data and statistical methods used to construct the Energy Performance Indicator (EPI) for cement manufacturing plants. It also explains how the EPI was...

71

Development of a Performance-based Industrial Energy Efficiency...  

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

report describes the data and statistical methods used to construct the Energy Performance Indicator (EPI) for glass manufacturing plants. It also explains how the EPI was...

72

Development of a Performance-based Industrial Energy Efficiency...  

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

report describes the data and statistical methods used to construct the Energy Performance Indicator (EPI) for pulp, paper, and paperboard mill plants. It also explains how the...

73

Development of a Performance-based Industrial Energy Efficiency...  

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

the work of EPA and the pharmaceutical manufacturing industry to develop an Energy Performance Indicator (EPI) for facilities that develop and manufacture pharmaceutical products...

74

Development of a Performance-based Industrial Energy Efficiency...  

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

the work of EPA and the automobile manufacturing industry to develop an Energy Performance Indicator (EPI) for assembly plants. These types of plants are defined as those that...

75

Optimization of high-performance superscalar architectures for energy efficiency  

Science Conference Proceedings (OSTI)

In recent years reducing power has become a critical design goal for high-performance microprocessors. This work attempts to bring the power issue to the earliest phase of high-performance microprocessor development. We propose a methodology for power-optimization ...

V. Zyuban; P. Kogge

2000-08-01T23:59:59.000Z

76

Kinship: efficient resource management for performance and functionally asymmetric platforms  

Science Conference Proceedings (OSTI)

On-chip heterogeneity has become key to balancing performance and power constraints, resulting in disparate (functionally overlapping but not equivalent) cores on a single die. Requiring developers to deal with such heterogeneity can impede adoption ... Keywords: dynamic scheduling, functional asymmetry, kinship, performance asymmetry

Vishakha Gupta; Rob Knauerhase; Paul Brett; Karsten Schwan

2013-05-01T23:59:59.000Z

77

High Performance Healthcare Buildings: A Roadmap to Improved Energy Efficiency  

SciTech Connect

This document presents a road map for improving the energy efficiency of hospitals and other healthcare facilities. The report compiles input from a broad array of experts in healthcare facility design and operations. The initial section lists challenges and barriers to efficiency improvements in healthcare. Opportunities are organized around the following ten themes: understanding and benchmarking energy use; best practices and training; codes and standards; improved utilization of existing HVAC designs and technology; innovation in HVAC design and technology; electrical system design; lighting; medical equipment and process loads; economic and organizational issues; and the design of next generation sustainable hospitals. Achieving energy efficiency will require a broad set of activities including research, development, deployment, demonstration, training, etc., organized around 48 specific objectives. Specific activities are prioritized in consideration of potential impact, likelihood of near- or mid-term feasibility and anticipated cost-effectiveness. This document is intended to be broad in consideration though not exhaustive. Opportunities and needs are identified and described with the goal of focusing efforts and resources.

Singer, Brett C.; Tschudi, William F.

2009-09-08T23:59:59.000Z

78

Energy efficiency and performance of solid state ballasts  

SciTech Connect

A project was undertaken to test the energy efficiency of ballasts. Two ballast types were used and retrofitted into existing fixtures on 3 floors in an office building in San Francisco. A core-coil energy efficient ballast was demonstrated also. The demonstration ballasts proved to be more efficient than the standard core-coil ballasts they replaced. Their energy demand reduction has resulted in a lower weekly peak demand. Operating above 20 KHz they have produced less audible noise. They also have lower heat dissipation. RFI radiation, although increased, has caused no apparent difficulties. Light output has been reduced slightly by all three demonstration ballasts. Ballast energy usage has been measured successfully with standard utility metering but there remain doubts as to the effects of the harmonics associated with solid-state circuitry. While no adverse effects have been observed, research must continue on the accuracy of electrical metering and on the effect on utility systems. The demonstration project has shown that solid-state fluorescent ballasts providing high frequency operation can be installed successfully in large numbers without adverse effects and with substantial energy saving.

Jewell, J.E.; Selkowitz, S.; Verderber, R.

1979-09-01T23:59:59.000Z

79

Measured energy performance of a US-China demonstration energy-efficient office building  

E-Print Network (OSTI)

and analysis of building energy efficiency in China.in evaluating relative building energy performance in Chinabuildings. The available building energy use data are for

Xu, Peng; Huang, Joe; Jin, Ruidong; Yang, Guoxiong

2006-01-01T23:59:59.000Z

80

Performance and energy efficiency in simple simultaneous multithreading processor cores  

E-Print Network (OSTI)

Simultaneous multithreading, where instructions from different threads share processor resources, has shown promise in delivering high throughput with little area and power overhead. We compare where in the performance ...

Uhler, Richard Stephen

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Development of a Performance-based Industrial Energy Efficiency Indicator  

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

Automobile Assembly Plants Automobile Assembly Plants Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder

82

Development of a Performance-based Industrial Energy Efficiency Indicator  

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

Cement Manufacturing Plants Cement Manufacturing Plants Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder

83

Development of a Performance-based Industrial Energy Efficiency Indicator  

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

Pulp, Paper, and Paperboard Mills Pulp, Paper, and Paperboard Mills Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder

84

Development of a Performance-based Industrial Energy Efficiency Indicator  

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

Pharmaceutical Manufacturing Plants Pharmaceutical Manufacturing Plants Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder

85

Development of a Performance-based Industrial Energy Efficiency Indicator  

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

Corn Refining Plants Corn Refining Plants Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder Technical documentation

86

Consumer-products minimum energy-efficiency-standards program. Topical report on Subtask 3. 1. Evaluation of energy consumption savings of boost heaters in dishwashers  

SciTech Connect

An analysis of the energy conservation and life cycle cost benefits of boost heaters for dishwashers is presented to provide technical information to assist in determining whether to modify the dishwasher test procedure to include boost heaters. Two manufacturers are offering dishwashers which have an inlet water temperature requirement of 120/sup 0/F. Cleaning performance in these appliances is maintained with an electric coil in the sump of the dishwasher, which boosts the incoming water to its final temperature. Both manufacturers have petitioned DOE for exemption from efficiency standards, since current DOE test procedures give no credit for water heater energy savings. The evaluation shows boost heaters to be energy conserving for all conditions. The life cycle cost analysis indicates boost heaters are cost effective in all cases for homes with electric water heaters, and in most cases for homes having gas water heaters. Additionally the proposed standards for dishwashers will lower water consumption in 1985 model dishwashers such that boost heaters will become cost effective in all cases.

Not Available

1980-05-01T23:59:59.000Z

87

Development and Online Opertation of Minimum Bias Triggers in ATLAS  

E-Print Network (OSTI)

The design of minimum bias triggers should allow for a highly efficient selection on pp-collisions, while minimising any possible bias in the event selection. In ATLAS two main minimum bias triggers have been developed using complementary technologies. A hardware based first level trigger, consisting of 32 plastic scintillators, has proven to efficienctly select pp-interactions. In particular during the start-up phase this trigger played a crucial role for the commissioning of the central trigger processor and detector sub-systems. A complementary selection is achieved by a multi-level minimum bias trigger, seeded off a random trigger on filled bunches. For the event selection at higher trigger levels a dedicated algorithm was developed, able to cope with around 86 millions of detector signals per bunch-crossing. We will present these trigger systems and their deployment online, highlighting their performance and trigger efficiencies. We outline as well the operation with increasing beam intensities and lumin...

Martin, T; The ATLAS collaboration

2010-01-01T23:59:59.000Z

88

Demonstration and Performance Monitoring of Foundation Heat Exchangers (FHX) in Ultra-High Energy Efficient Research Homes  

DOE Green Energy (OSTI)

The more widespread use of Ground Source Heat Pump (GSHP) systems has been hindered by their high first cost, which is mainly driven by the cost of the drilling and excavation for installation of ground heat exchangers (GHXs). A new foundation heat exchanger (FHX) technology was proposed to reduce first cost by placing the heat exchanger into the excavations made during the course of construction (e.g., the overcut for the basement and/or foundation and run-outs for water supply and the septic field). Since they reduce or eliminate the need for additional drilling or excavation, foundation heat exchangers have the potential to significantly reduce or eliminate the first cost premium associated with GSHPs. Since December 2009, this FHX technology has been demonstrated in two ultra-high energy efficient new research houses in the Tennessee Valley, and the performance data has been closely monitored as well. This paper introduces the FHX technology with the design, construction and demonstration of the FHX and presents performance monitoring results of the FHX after one year of monitoring. The performance monitoring includes hourly maximum and minimum entering water temperature (EWT) in the FHX compared with the typical design range, temperature difference (i.e., T) across the FHX, and hourly heat transfer rate to/from the surrounding soil.

Im, Piljae [ORNL; Hughes, Patrick [ORNL; Liu, Xiaobing [ORNL

2012-01-01T23:59:59.000Z

89

Statistical Power and Performance Modeling for Optimizing the Energy Efficiency of Scientific Computing  

Science Conference Proceedings (OSTI)

High-performance computing (HPC) has become an indispensable resource in science and engineering, and it has oftentimes been referred to as the "thirdpillar" of science, along with theory and experimentation. Performance tuning is a key aspect in utilizing ... Keywords: energy-efficiency tuning, green supercomputing, regression modeling

Balaji Subramaniam; Wu-chun Feng

2010-12-01T23:59:59.000Z

90

Economy size and performance: An efficiency analysis in the telecommunications sector  

Science Conference Proceedings (OSTI)

The existing empirical evidence on the relationship between economy size and performance has been inconclusive. This paper employs stochastic frontier analysis to estimate economic measures of efficiency for the telecommunications sectors of 139 economies ... Keywords: Economy size, Performance, Policy, Polity, Stochastic frontier analysis, Telecommunications

Pavlos C. Symeou

2011-06-01T23:59:59.000Z

91

Extending Efficiency Services to Underserved Households: NYSERDAs Assisted Home Performance with ENERGY STAR Program  

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

N April 4, 2012 Extending Efficiency Services to Underserved Households: NYSERDA's Assisted Home Performance with ENERGY STAR Program Since 2001, New York residents have completed over 39,000 energy upgrades through NYSERDA's Home Performance with ENERGY STAR (HPwES) initiative. Approximately one third of these projects have been completed through the Assisted HPwES track, which offers large incentives to middle income

92

Whole Product Performance for 2X High-Efficiency Incandescent Lamps  

Science Conference Proceedings (OSTI)

FirstEnergy (FE) approached EPRI’s Lighting Lab in 2011 to validate the performance of a newly developed “2X” incandescent lighting technology developed by a manufacturing company in their service territory. This manufacturer claimed that their product was identical in light output, but twice (2X) as efficient as traditional 100W incandescent bulbs. In collaboration with FE, EPRI conducted a series of tests to independently verify the energy and photometric performance of this ...

2012-11-12T23:59:59.000Z

93

Time-domain approach to energy efficiency in high-performance network element design  

E-Print Network (OSTI)

Energy efficiency is a corner stone of sustainability in data center and high-performance networking. However, at present there is a notable structural mismatch between network silicon development targets and network equipment utilization patterns in the field. In particular, some aspects of network energy utilization (eg load-proportional energy consumption) routinely stay out of focus during system design and implementation. Drawing from hands-on research and development in high-speed and grid networking, we identify a novel approach to energy efficiency in network engineering. In this paper, we demonstrate how the problem of efficient network system design can be dissected into smaller sections based on timescales of traffic processing. The newly proposed approach allows R&D efforts to be tightly paired to resources and sustainability targets to improve energy efficiency in many classes of network and telecom devices.

Kharitonov, Daniel

2009-01-01T23:59:59.000Z

94

Design Optimization of PHEV and EREV Powertrain Architectures - Performance and Efficiency  

Science Conference Proceedings (OSTI)

This project investigates design optimization of plug-in hybrid electric vehicle (PHEV) and extended range electric vehicle (EREV) powertrain architectures in terms of performance and efficiency. The motivation behind this initial effort is to develop a comparative method for assessing design choices for a given vehicle class that can be used to test those design choices through sensitivity analysis in later investigations.

2008-12-16T23:59:59.000Z

95

Minimum cost model energy code envelope requirements  

SciTech Connect

This paper describes the analysis underlying development of the U.S. Department of Energy`s proposed revisions of the Council of American Building Officials (CABO) 1993 Model Energy Code (MEC) building thermal envelope requirements for single-family and low-rise multifamily residences. This analysis resulted in revised MEC envelope conservation levels based on an objective methodology that determined the minimum-cost combination of energy efficiency measures (EEMs) for residences in different locations around the United States. The proposed MEC revision resulted from a cost-benefit analysis from the consumer`s perspective. In this analysis, the costs of the EEMs were balanced against the benefit of energy savings. Detailed construction, financial, economic, and fuel cost data were compiled, described in a technical support document, and incorporated in the analysis. A cost minimization analysis was used to compare the present value of the total long-nm costs for several alternative EEMs and to select the EEMs that achieved the lowest cost for each location studied. This cost minimization was performed for 881 cities in the United States, and the results were put into the format used by the MEC. This paper describes the methodology for determining minimum-cost energy efficiency measures for ceilings, walls, windows, and floors and presents the results in the form of proposed revisions to the MEC. The proposed MEC revisions would, on average, increase the stringency of the MEC by about 10%.

Connor, C.C.; Lucas, R.G.; Turchen, S.J.

1994-08-01T23:59:59.000Z

96

Development of a performance-based industrial energy efficiency indicator for cement manufacturing plants.  

SciTech Connect

Organizations that implement strategic energy management programs have the potential to achieve sustained energy savings if the programs are carried out properly. A key opportunity for achieving energy savings that plant managers can take is to determine an appropriate level of energy performance by comparing the plant performance with that of similar plants in the same industry. Manufacturing plants can set energy efficiency targets by using performance-based indicators. The U.S. Environmental Protection Agency (EPA), through its ENERGY STAR{reg_sign} program, has been developing plant energy performance indicators (EPIs) to encourage a variety of U.S. industries to use energy more efficiently. This report describes work with the cement manufacturing industry to provide a plant-level indicator of energy efficiency for assembly plants that produce a variety of products, including Portland cement and other specialty cement products, in the United States. Consideration is given to the role that performance-based indicators play in motivating change; the steps needed to develop indicators, including interacting with an industry to secure adequate data for an indicator; and the actual application and use of an indicator when complete. How indicators are employed in the EPA's efforts to encourage industries to voluntarily improve their use of energy is discussed as well. The report describes the data and statistical methods used to construct the EPI for cement manufacturing plants. Individual equations are presented, as are the instructions for using them in an associated Excel spreadsheet.

Boyd, G.; Decision and Information Sciences

2006-07-21T23:59:59.000Z

97

Development of a performance-based industrial energy efficiency indicator for cement manufacturing plants.  

SciTech Connect

Organizations that implement strategic energy management programs have the potential to achieve sustained energy savings if the programs are carried out properly. A key opportunity for achieving energy savings that plant managers can take is to determine an appropriate level of energy performance by comparing the plant performance with that of similar plants in the same industry. Manufacturing plants can set energy efficiency targets by using performance-based indicators. The U.S. Environmental Protection Agency (EPA), through its ENERGY STAR{reg_sign} program, has been developing plant energy performance indicators (EPIs) to encourage a variety of U.S. industries to use energy more efficiently. This report describes work with the cement manufacturing industry to provide a plant-level indicator of energy efficiency for assembly plants that produce a variety of products, including Portland cement and other specialty cement products, in the United States. Consideration is given to the role that performance-based indicators play in motivating change; the steps needed to develop indicators, including interacting with an industry to secure adequate data for an indicator; and the actual application and use of an indicator when complete. How indicators are employed in the EPA's efforts to encourage industries to voluntarily improve their use of energy is discussed as well. The report describes the data and statistical methods used to construct the EPI for cement manufacturing plants. Individual equations are presented, as are the instructions for using them in an associated Excel spreadsheet.

Boyd, G.; Decision and Information Sciences

2006-07-21T23:59:59.000Z

98

Utility and performance relative to consumer product energy efficiency standards. Final technical report  

SciTech Connect

An investigation of the relative utility and performance of nine major household consumer products covered by the Energy Policy and Conservation Act is summarized. The objective was to define the terms utility and performance, to recommend methods for quantifying these two concepts, and to recommend an approach for dealing with utility and performance issues in the energy efficiency standards program. The definitions developed are: performance of a consumer product is the objective measure of how well, with the expected level of consumer input (following the manufacturer's instructions for installation and operation), the product does its intended job; and utility of a consumer product is a subjective measure, based on the consumer's perception, of the capability of the product to satisfy human needs. Quantification is based on test procedures and consumer survey methods which are largely already in use by industry. Utility and performance issues are important in product classification for prescribing energy efficiency standards. The recommended approach to utility and performance issues and classification is: prior to setting standards, evaluate utility and performance issues in the most quantitative way allowed by resources and schedules in order to develop classification guidelines. This approach requires no changes in existing Department of Energy test procedures.

Coggins, J.L.

1979-12-14T23:59:59.000Z

99

Energy efficient Phase Change Memory based main memory for future high performance systems  

Science Conference Proceedings (OSTI)

Phase Change Memory (PCM) has recently attracted a lot of attention as a scalable alternative to DRAM for main memory systems. As the need for high-density memory increases, DRAM has proven to be less attractive from the point of view of scaling and ... Keywords: DDR3 commodity DRAM memory system, energy efficient phase change memory, main memory, future high performance systems, energy consumption, latency issues, write energy, write endurance, cache, embedded DRAM

R. A. Bheda; Jason A. Poovey; J. G. Beu; T. M. Conte

2011-07-01T23:59:59.000Z

100

Development of a performance-based industrial energy efficiency indicator for corn refining plants.  

Science Conference Proceedings (OSTI)

Organizations that implement strategic energy management programs have the potential to achieve sustained energy savings if the programs are carried out properly. A key opportunity for achieving energy savings that plant managers can take is to determine an appropriate level of energy performance by comparing their plant's performance with that of similar plants in the same industry. Manufacturing facilities can set energy efficiency targets by using performance-based indicators. The U.S. Environmental Protection Agency (EPA), through its ENERGY STAR{reg_sign} program, has been developing plant energy performance indicators (EPIs) to encourage a variety of U.S. industries to use energy more efficiently. This report describes work with the corn refining industry to provide a plant-level indicator of energy efficiency for facilities that produce a variety of products--including corn starch, corn oil, animal feed, corn sweeteners, and ethanol--for the paper, food, beverage, and other industries in the United States. Consideration is given to the role that performance-based indicators play in motivating change; the steps needed to develop indicators, including interacting with an industry to secure adequate data for an indicator; and the actual application and use of an indicator when complete. How indicators are employed in the EPA's efforts to encourage industries to voluntarily improve their use of energy is discussed as well. The report describes the data and statistical methods used to construct the EPI for corn refining plants. Individual equations are presented, as are the instructions for using them in an associated Excel spreadsheet.

Boyd, G. A.; Decision and Information Sciences; USEPA

2006-07-31T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Minimum Concave Cost Flow Over a Grid Network  

E-Print Network (OSTI)

Oct 12, 2012 ... Abstract: The minimum concave cost network flow problem (MCCNFP) is NP- hard, but efficient polynomial-time algorithms exist for some ...

102

Performance, Efficiency, and Emissions Characterization of Reciprocating Internal Combustion Engines Fueled with Hydrogen/Natural Gas Blends  

Science Conference Proceedings (OSTI)

Hydrogen is an attractive fuel source not only because it is abundant and renewable but also because it produces almost zero regulated emissions. Internal combustion engines fueled by compressed natural gas (CNG) are operated throughout a variety of industries in a number of mobile and stationary applications. While CNG engines offer many advantages over conventional gasoline and diesel combustion engines, CNG engine performance can be substantially improved in the lean operating region. Lean operation has a number of benefits, the most notable of which is reduced emissions. However, the extremely low flame propagation velocities of CNG greatly restrict the lean operating limits of CNG engines. Hydrogen, however, has a high flame speed and a wide operating limit that extends into the lean region. The addition of hydrogen to a CNG engine makes it a viable and economical method to significantly extend the lean operating limit and thereby improve performance and reduce emissions. Drawbacks of hydrogen as a fuel source, however, include lower power density due to a lower heating value per unit volume as compared to CNG, and susceptibility to pre-ignition and engine knock due to wide flammability limits and low minimum ignition energy. Combining hydrogen with CNG, however, overcomes the drawbacks inherent in each fuel type. Objectives of the current study were to evaluate the feasibility of using blends of hydrogen and natural gas as a fuel for conventional natural gas engines. The experiment and data analysis included evaluation of engine performance, efficiency, and emissions along with detailed in-cylinder measurements of key physical parameters. This provided a detailed knowledge base of the impact of using hydrogen/natural gas blends. A four-stroke, 4.2 L, V-6 naturally aspirated natural gas engine coupled to an eddy current dynamometer was used to measure the impact of hydrogen/natural gas blends on performance, thermodynamic efficiency and exhaust gas emissions in a reciprocating four stroke cycle engine. The test matrix varied engine load and air-to-fuel ratio at throttle openings of 50% and 100% at equivalence ratios of 1.00 and 0.90 for hydrogen percentages of 10%, 20% and 30% by volume. In addition, tests were performed at 100% throttle opening, with an equivalence ratio of 0.98 and a hydrogen blend of 20% to further investigate CO emission variations. Data analysis indicated that the use of hydrogen/natural gas fuel blend penalizes the engine operation with a 1.5 to 2.0% decrease in torque, but provided up to a 36% reduction in CO, a 30% reduction in NOX, and a 5% increase in brake thermal efficiency. These results concur with previous results published in the open literature. Further reduction in emissions can be obtained by retarding the ignition timing.

Kirby S. Chapman; Amar Patil

2007-06-30T23:59:59.000Z

103

Minimum Changeover Cost Arborescence  

E-Print Network (OSTI)

having minimum changeover cost, a cost that we now describe. ... We define the changeover cost at j, denoted by d(j), as the sum of the costs at j paid for each of  ...

104

Minimum Magnetic Energy Theorem  

E-Print Network (OSTI)

The Thomson's Theorem states that static charge distributions in conductors show up at the conducting surfaces in an equipotential configuration, so that the electrostatic energy is a minimum. In this work we study an analogue statement for magnetic systems: in a given set of conductors, the stored magnetic field energy reaches the minimum value for superficial current distributions so that the magnetic vector potential is tangent to the conductors surfaces. This is the counterpart of Thomson's theorem for the magnetic field.

Fiolhais, M C N

2008-01-01T23:59:59.000Z

105

Northwest Energy Efficient Manufactured Housing Program: High Performance Manufactured Home Prototyping and Construction Development  

SciTech Connect

The Building America Partnership for Improved Residential Construction, the Bonneville Power Administration (BPA), and Northwest Energy Works (NEW), the current Northwest Energy Efficient Manufactured Housing Program (NEEM) administrator, have been collaborating to conduct research on new specifications that would improve on the energy requirements of a NEEM home. In its role as administrator, NEW administers the technical specs, performs research and engineering analysis, implements ongoing construction quality management procedures, and maintains a central database with home tracking. This project prototyped and assessed the performances of cost-effective high performance building assemblies and mechanical systems that are not commonly deployed in the manufacturing setting. The package of measures is able to reduce energy used for space conditioning, water heating and lighting by 50 percent over typical manufactured homes produced in the northwest.

Hewes, T.; Peeks, B.

2013-11-01T23:59:59.000Z

106

Measured energy performance of a US-China demonstrationenergy-efficient office building  

SciTech Connect

In July 1998, the U.S. Department of Energy (USDOE) and China's Ministry of Science of Technology (MOST) signed a Statement of Work (SOW) to collaborate on the design and construction of an energy-efficient demonstration office building and design center to be located in Beijing. The proposed 13,000 m{sup 2} (140,000 ft{sup 2}) nine-story office building would use U.S. energy-efficient materials, space-conditioning systems, controls, and design principles that were judged to be widely replicable throughout China. The SOW stated that China would contribute the land and provide for the costs of the base building, while the U.S. would be responsible for the additional (or marginal) costs associated with the package of energy efficiency and renewable energy improvements to the building. The project was finished and the building occupied in 2004. Using DOE-2 to analyze the energy performance of the as-built building, the building obtained 44 out of 69 possible points according to the Leadership in Energy and Environmental Design (LEED) rating, including the full maximum of 10 points in the energy performance section. The building achieved a LEED Gold rating, the first such LEED-rated office building in China, and is 60% more efficient than ASHRAE 90.1-1999. The utility data from the first year's operation match well the analysis results, providing that adjustments are made for unexpected changes in occupancy and operations. Compared with similarly equipped office buildings in Beijing, this demonstration building uses 60% less energy per floor area. However, compared to conventional office buildings with less equipment and window air-conditioners, the building uses slightly more energy per floor area.

Xu, Peng; Huang, Joe; Jin, Ruidong; Yang, Guoxiong

2006-08-28T23:59:59.000Z

107

Measured energy performance of a US-China demonstrationenergy-efficient office building  

SciTech Connect

In July 1998, the U.S. Department of Energy (USDOE) and China's Ministry of Science of Technology (MOST) signed a Statement of Work (SOW) to collaborate on the design and construction of an energy-efficient demonstration office building and design center to be located in Beijing. The proposed 13,000 m{sup 2} (140,000 ft{sup 2}) nine-story office building would use U.S. energy-efficient materials, space-conditioning systems, controls, and design principles that were judged to be widely replicable throughout China. The SOW stated that China would contribute the land and provide for the costs of the base building, while the U.S. would be responsible for the additional (or marginal) costs associated with the package of energy efficiency and renewable energy improvements to the building. The project was finished and the building occupied in 2004. Using DOE-2 to analyze the energy performance of the as-built building, the building obtained 44 out of 69 possible points according to the Leadership in Energy and Environmental Design (LEED) rating, including the full maximum of 10 points in the energy performance section. The building achieved a LEED Gold rating, the first such LEED-rated office building in China, and is 60% more efficient than ASHRAE 90.1-1999. The utility data from the first year's operation match well the analysis results, providing that adjustments are made for unexpected changes in occupancy and operations. Compared with similarly equipped office buildings in Beijing, this demonstration building uses 60% less energy per floor area. However, compared to conventional office buildings with less equipment and window air-conditioners, the building uses slightly more energy per floor area.

Xu, Peng; Huang, Joe; Jin, Ruidong; Yang, Guoxiong

2006-08-28T23:59:59.000Z

108

Expert Meeting Report: Achieving the Best Installed Performance from High-Efficiency Residential Gas Furnaces  

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

Achieving the Best Installed Performance from High- Efficiency Residential Gas Furnaces Larry Brand Partnership for Advanced Residential Retrofit (PARR) March 2012 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, subcontractors, or affiliated partners makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade

109

EFFECT OF ELECTROLYZER CONFIGURATION AND PERFORMANCE ON HYBRID SULFUR PROCESS NET THERMAL EFFICIENCY  

DOE Green Energy (OSTI)

Hybrid Sulfur cycle is gaining popularity as a possible means for massive production of hydrogen from nuclear energy. Several different ways of carrying out the SO{sub 2}-depolarized electrolysis step are being pursued by a number of researchers. These alternatives are evaluated with complete flowsheet simulations and on a common design basis using Aspen Plus{trademark}. Sensitivity analyses are performed to assess the performance potential of each configuration, and the flowsheets are optimized for energy recovery. Net thermal efficiencies are calculated for the best set of operating conditions for each flowsheet and the results compared. This will help focus attention on the most promising electrolysis alternatives. The sensitivity analyses should also help identify those features that offer the greatest potential for improvement.

Gorensek, M

2007-03-16T23:59:59.000Z

110

Rimac: A novel redundancybased hierarchical cache architecture for energy efficient, high performance storage systems  

E-Print Network (OSTI)

Energy efficiency becomes increasingly important in today’s high-performance storage systems. It can be challenging to save energy and improve performance at the same time in conventional (i.e. single-rotation-rate) disk-based storage systems. Most existing solutions compromise performance for energy conservation. In this paper, we propose a redundancy-based, two-level I/O cache architecture called RIMAC to address this problem. The idea of RIMAC is to enable data on the standby disk to be recovered by accessing data in the two-level I/O cache or on currently active/idle disks. At both cache and disk levels, RIMAC dynamically transforms accesses toward standby disks by exploiting parity redundancy in parity-based redundant disk arrays. Because I/O requests that require physical accesses on standby disks involve long waiting time and high power consumption for disk spin-up (tens of seconds for SCSI disks), transforming those requests to accesses in a two-level, collaborative I/O cache or on active disks can significantly improve both energy efficiency and performance. In RIMAC, we developed i) two power-aware read request transformation schemes called Transformable Read in Cache (TRC) and Transformable Read on Disk (TRD), ii) a poweraware write request transformation policy for parity update and (iii) a second-chance parity cache replacement algorithm to improve request transformation rate. We evaluated RI-MAC by augmenting a validated storage system simulator, disksim. For several real-life server traces including HP’s cello99, TPC-D and SPC’s search engine, RIMAC is shown to reduce energy consumption by up to 33 % and simultaneously improve the average response time by up to 30%. 1.

Xiaoyu Yao; Jun Wang

2006-01-01T23:59:59.000Z

111

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

voltage of the electricity distribution system to theaccount electricity system transmission and distributionfor electricity savings in distribution transformers. We

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

112

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

percent and a four-blade fan design. The baseline price isThe three design options we evaluated are: 1. Improved fan

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

113

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

and 95-percent AFUE for oil boilers. Both are found to beyr) Target Price (USD) CCE (USD/GJ) CAN Gas CHN Gas Gas OilGas Oil EU USA BUENAS Version 04-23-12 Rev. 07-27-12

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

114

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

Parameters The lowest electricity tariff among the countriesJapan’s high residential electricity tariff and the EU’s lowproduct class, and the electricity tariff is 0.11 USD, then

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

115

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

2030) .39 Table 34. CO 2 Emissions Mitigation in 2030 (35. Cumulative CO 2 Emissions Reductions between 2015-2030 (

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

116

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

for 13- to 15-watts bulbs and LED data for products from 6bulbs have a one-year lifetime, CFLs five years, and LEDs 10

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

117

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

comparing the national final energy consumption E(y) of theNational Operating Cost (NOC) is the total (site) energy consumption (Energy Consumption 14 Market Share Weighting . 14 Appliance Group Data . 15 Lifetime Assumptions .. 30 National

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

118

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

G. , 2002. A life-cycle cost analysis for setting energyM. , Nicholas Bojda, 2012b. Cost Effectiveness of High-31 Summary of Cost Effective

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

119

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

Price.ea3w.com, 2011, and Appliance Database USA USDOE, 2009Price.ea3w.com, 2011, and Appliance Database Gas EU USA Gas2011 and Appliance Database Electric Motors We identified

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

120

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

Dishwashers AC* Cooking Equip. Dishwashers Dryers Fans RES FreezersAssumptions USDOE, 2009 Dishwashers Dishwashers and clothes

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

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


121

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

23 Table 19. StandbyX X X X X X X X X X X X X Standby Power X X X X X X X X X XPJ Mt Gt NPV Billion USD Standby Television Laundry Water

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

122

Estimate of Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts  

E-Print Network (OSTI)

Electric Motors Industry Total Considering carbon emissions (Tables 33 and 34) on top of energy savings (Electric Motors Industry Residential Total A few key results: Water heating is the end use from which the most savingsElectric Motors Industry Total AUS EU RUS ZAF USA In the CEP scenario, because the focus is on maximizing energy savings,

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

123

The Minimum Price Contract  

E-Print Network (OSTI)

A minimum price contract is one of many tools a marketer may use to better manage price and production risk while trying to achieve financial goals and objectives. This publication discusses the advantages and disadvantages involved in this marketing program and the situations when it can be used.

Waller, Mark L.; Amosson, Stephen H.; Welch, Mark; Dhuyvetter, Kevin C.

2008-10-17T23:59:59.000Z

124

Measured energy performance of a US-China demonstration energy-efficient office building  

E-Print Network (OSTI)

efficient materials, space-conditioning systems, controls,efficient materials, space-conditioning systems, controls,Beijing with central space conditioning. Since the utility

Xu, Peng; Huang, Joe; Jin, Ruidong; Yang, Guoxiong

2006-01-01T23:59:59.000Z

125

Certifying Industrial Energy Efficiency Performance: Aligning Management, Measurement, and Practice to Create Market Value  

E-Print Network (OSTI)

that the plant has sustainable energy management systems inneeded to create sustainable energy efficiency in industry.industry’s approach to sustainable energy efficiency that

McKane, Aimee; Scheihing, Paul; Williams, Robert

2008-01-01T23:59:59.000Z

126

Investigation of energy efficient approaches for the energy performance improvement of commercial buildings.  

E-Print Network (OSTI)

??Energy efficiency of buildings is attracting significant attention from the research community as the world is moving towards sustainable buildings design. Energy efficient approaches are… (more)

Hasan, M. Mahmudul

2013-01-01T23:59:59.000Z

127

Measured energy performance of a US-China demonstration energy-efficient office building  

E-Print Network (OSTI)

China. ACKNOWLEDGEMENTS This work was supported by the Assistant Secretary for Energy Efficiency and Renewable

Xu, Peng; Huang, Joe; Jin, Ruidong; Yang, Guoxiong

2006-01-01T23:59:59.000Z

128

CEERECEERE Center for Energy Efficiency and Renewable Energy at University of Massachusetts COMPONENT PERFORMANCECOMPONENT PERFORMANCE  

E-Print Network (OSTI)

CEERECEERE Center for Energy Efficiency and Renewable Energy at University of Massachusetts.D.ija, Ph.D. Center for Energy Efficiency and Renewable EnergyCenter for Energy Efficiency and Renewable Center for Energy Efficiency and Renewable Energy at University of Massachusetts INTRODUCTIONINTRODUCTION

Massachusetts at Amherst, University of

129

Measured energy performance of a US-China demonstration energy-efficient office building  

E-Print Network (OSTI)

lighting system with efficient fixtures, daylighting,has both daylighting controls and a TES system. Electricity

Xu, Peng; Huang, Joe; Jin, Ruidong; Yang, Guoxiong

2006-01-01T23:59:59.000Z

130

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

Science Conference Proceedings (OSTI)

Recognition of the importance of power in the field of High Performance Computing, whether it be as an obstacle, expense or design consideration, has never been greater and more pervasive. While research has been conducted on many related aspects, there is a stark absence of work focused on large scale High Performance Computing. Part of the reason is the lack of measurement capability currently available on small or large platforms. Typically, research is conducted using coarse methods of measurement such as inserting a power meter between the power source and the platform, or fine grained measurements using custom instrumented boards (with obvious limitations in scale). To collect the measurements necessary to analyze real scientific computing applications at large scale, an in-situ measurement capability must exist on a large scale capability class platform. In response to this challenge, we exploit the unique power measurement capabilities of the Cray XT architecture to gain an understanding of power use and the effects of tuning. We apply these capabilities at the operating system level by deterministically halting cores when idle. At the application level, we gain an understanding of the power requirements of a range of important DOE/NNSA production scientific computing applications running at large scale (thousands of nodes), while simultaneously collecting current and voltage measurements on the hosting nodes. We examine the effects of both CPU and network bandwidth tuning and demonstrate energy savings opportunities of up to 39% with little or no impact on run-time performance. Capturing scale effects in our experimental results was key. Our results provide strong evidence that next generation large-scale platforms should not only approach CPU frequency scaling differently, but could also benefit from the capability to tune other platform components, such as the network, to achieve energy efficient performance.

Laros, James H., III

2011-08-01T23:59:59.000Z

131

Certifying Industrial Energy Efficiency Performance: AligningManagement, Measurement, and Practice to Create Market Value  

SciTech Connect

More than fifteen years after the launch of programs in theU.K. and U.S., industry still offers one of the largest opportunities forenergy savings worldwide. The International Energy Agency (IEA) estimatesthe savings potential from cost-optimization of industrial motor-drivensystems alone at 7 percent of global electricity use. The U.S. Departmentof Energy (USDOE) Industrial Technologies Program estimates 7 percentsavings potential in total US industrial energy use through theapplication of proven best practice. Simple paybacks for these types ofprojects are frequently two years or less. The technology required toachieve these savings is widely available; the technical skills requiredto identify energy saving opportunities are known and transferable.Although programs like USDOE's Best Practices have been highlysuccessful, most plants, as supported by 2002 MECS data, remain eitherunaware or unmotivated to improve their energy efficiency--as evidencedby the 98 percent of US industrial facilities reporting to MECS say thatthey lack a full-time energy manager. With the renewed interest in energyefficiency worldwide and the emergence of carbon trading and newfinancial instruments such as white certificates1, there is a need tointroduce greater transparency into the way that industrial facilitiesidentify, develop, and document energy efficiency projects. Historically,industrial energy efficiency projects have been developed by plantengineers, frequently with assistance from consultants and/or supplierswith highly specialized technical skills. Under this scenario,implementation of energy efficiency improvements is dependent onindividuals. These individuals typically include "champions" within anindustrial facility or corporation, working in cooperation withconsultants or suppliers who have substantial knowledge based on years ofexperience. This approach is not easily understood by others without thisspecialized technical knowledge, penetrates the market fairly slowly, andhas no assurance of persistence, since champions may leave the company orbe reassigned after project completion.This paper presents an alternatescenario that builds on the body of expert knowledge concerning energymanagement best practices and the experience of industrial champions toengage industry in continuous energy efficiency improvement at thefacility rather than the individual level. Under this scenario,standardized methodologies for applying and validating energy managementbest practices in industrial facilities will be developed through aconsensus process involving both plant personnel and specializedconsultants and suppliers. The resulting protocols will describe aprocess or framework for conducting an energy savings assessment andverifying the results that will be transparent to policymakers, managers,and the financial community, and validated by a third-party organization.Additionally, a global dialogue is being initiated by the United NationsIndustrial Development Organization (UNIDO) concerning the development ofan international industrial energy management standard that would be ISOcompatible. The proposed scenario will combine the resulting standardwith the best practice protocols for specific energy systems (i.e.,steam, process heating, compressed air, pumping systems, etc.) to formthe foundation of a third party, performance-based certification programfor the overall industrial facility that is compatible with existingmanagement systems, including ISO 9001:2000, 14001:2004 and 6 Sigma. Thelong term goal of this voluntary, industry designed certification programis to develop a transparent, globally accepted system for validatingenergy efficiency projects and management practices. This system wouldcreate a verified record of energy savings with potential market valuethat could be recognized among sectors and countries.

McKane, Aimee; Scheihing, Paul; Williams, Robert

2007-07-01T23:59:59.000Z

132

Certifying Industrial Energy Efficiency Performance: AligningManagement, Measurement, and Practice to Create Market Value  

SciTech Connect

More than fifteen years after the launch of programs in theU.K. and U.S., industry still offers one of the largest opportunities forenergy savings worldwide. The International Energy Agency (IEA) estimatesthe savings potential from cost-optimization of industrial motor-drivensystems alone at 7 percent of global electricity use. The U.S. Departmentof Energy (USDOE) Industrial Technologies Program estimates 7 percentsavings potential in total US industrial energy use through theapplication of proven best practice. Simple paybacks for these types ofprojects are frequently two years or less. The technology required toachieve these savings is widely available; the technical skills requiredto identify energy saving opportunities are known and transferable.Although programs like USDOE's Best Practices have been highlysuccessful, most plants, as supported by 2002 MECS data, remain eitherunaware or unmotivated to improve their energy efficiency--as evidencedby the 98 percent of US industrial facilities reporting to MECS say thatthey lack a full-time energy manager. With the renewed interest in energyefficiency worldwide and the emergence of carbon trading and newfinancial instruments such as white certificates1, there is a need tointroduce greater transparency into the way that industrial facilitiesidentify, develop, and document energy efficiency projects. Historically,industrial energy efficiency projects have been developed by plantengineers, frequently with assistance from consultants and/or supplierswith highly specialized technical skills. Under this scenario,implementation of energy efficiency improvements is dependent onindividuals. These individuals typically include "champions" within anindustrial facility or corporation, working in cooperation withconsultants or suppliers who have substantial knowledge based on years ofexperience. This approach is not easily understood by others without thisspecialized technical knowledge, penetrates the market fairly slowly, andhas no assurance of persistence, since champions may leave the company orbe reassigned after project completion.This paper presents an alternatescenario that builds on the body of expert knowledge concerning energymanagement best practices and the experience of industrial champions toengage industry in continuous energy efficiency improvement at thefacility rather than the individual level. Under this scenario,standardized methodologies for applying and validating energy managementbest practices in industrial facilities will be developed through aconsensus process involving both plant personnel and specializedconsultants and suppliers. The resulting protocols will describe aprocess or framework for conducting an energy savings assessment andverifying the results that will be transparent to policymakers, managers,and the financial community, and validated by a third-party organization.Additionally, a global dialogue is being initiated by the United NationsIndustrial Development Organization (UNIDO) concerning the development ofan international industrial energy management standard that would be ISOcompatible. The proposed scenario will combine the resulting standardwith the best practice protocols for specific energy systems (i.e.,steam, process heating, compressed air, pumping systems, etc.) to formthe foundation of a third party, performance-based certification programfor the overall industrial facility that is compatible with existingmanagement systems, including ISO 9001:2000, 14001:2004 and 6 Sigma. Thelong term goal of this voluntary, industry designed certification programis to develop a transparent, globally accepted system for validatingenergy efficiency projects and management practices. This system wouldcreate a verified record of energy savings with potential market valuethat could be recognized among sectors and countries.

McKane, Aimee; Scheihing, Paul; Williams, Robert

2007-07-01T23:59:59.000Z

133

Minimum Bias Measurements with the ATLAS Detector at the CERN Large Hadron Collider  

E-Print Network (OSTI)

efficiency at the Event Filter MBTS trigger efficiency atand counted at the Event Filter trigger level. Any eventsCHAPTER 3. MINIMUM BIAS TRIGGER Event Selection The analysis

Leyton, Michael A.

2009-01-01T23:59:59.000Z

134

Hydraulic Performance and Mass Transfer Efficiency of Engineering Scale Centrifugal Contactors  

Science Conference Proceedings (OSTI)

Annular centrifugal contactors (ACCs) are being evaluated for process-scale solvent extraction operations in support of Advanced Fuel Cycle Initiative (AFCI) separations goals. Process-scale annular centrifugal contactors have the potential for high stage efficiency if properly employed and optimized for the application. Hydraulic performance issues related to flow instability and classical flooding are likely unimportant, especially for units with high throughputs. However, annular mixing increases rapidly with increasing rotor diameter while maintaining a fixed g force at the rotor wall. In addition, for engineering/process-scale contactors, elevated rotor speeds and/or throughput rates, can lead to organic phase foaming at the rotor discharge collector area. Foam buildup in the upper rotor head area can aspirate additional vapor from the contactor housing resulting in a complete loss of separation equilibrium. Variable speed drives are thus desirable to optimize and balance the operating parameters to help ensure acceptable performance. Proper venting of larger contactors is required to balance pressures across individual stages and prevent vapor lock due to foam aspiration.

David Meikrantz; Troy Garn; Nick Mann; Jack Law; Terry Todd

2007-09-01T23:59:59.000Z

135

Technical background paper for utility and performance relative to consumer-product energy-efficiency standards (for proposed energy-efficiency standards)  

SciTech Connect

This report summarizes an investigation of the relative utility and performance of nine major household consumer products covered by the Energy Policy and Conservation Act. The objective of the investigation was to define the terms utility and performance, to recommend methods for quantifying these two concepts, and to recommend an approach for dealing with utility and performance issues in the energy-efficiency-standards program. Performance of a consumer product is the objective measure of how well, with the expected level of consumer input, the product does its intended job; and utility of a consumer product is a subjective measure, based on the consumer's perception, of the capability of the product to satisfy human needs. Quantification is based on test procedures and consumer-survey methods already largely in use by industry. Utility and performance issues are important in product classification for prescribing energy-efficiency standards. The recommended approach to classification is: prior to setting standards, evaluate utility and performance issues in the most-quantitative way allowed by resources and schedules in order to develop classification guidelines. This approach to utility and performance issues and classification requires no changes in existing Department of Energy test procedures.

Coggins, J.L.

1979-09-13T23:59:59.000Z

136

Minimum Cost Arborescences ?  

E-Print Network (OSTI)

In this paper, we analyze the cost allocation problem when a group of agents or nodes have to be connected to a source, and where the cost matrix describing the cost of connecting each pair of agents is not necessarily symmetric, thus extending the well-studied problem of minimum cost spanning tree games, where the costs are assumed to be symmetric. The focus is on rules which satisfy axioms representing incentive and fairness properties. We show that while some results are similar, there are also significant differences between the frameworks corresponding to symmetric and asymmetric cost matrices.

Bhaskar Dutta; Debasis Mishra; We Thank Daniel Granot; Anirban Kar; Herve Moulin For Comments

2011-01-01T23:59:59.000Z

137

Department of Materials Science & Engineering Spring 2012 Assessing the Performance of Energy Efficient Housing  

E-Print Network (OSTI)

of Energy Efficient Housing Overview Penn State's Department of Architecture partnered with the Union Country Housing Authority (UCHA) to create the Energy Efficient Housing Program (EEHP). A duplex was constructed and two homes were remodelled using energy efficient technologies and sustainable materials. UCHA

Demirel, Melik C.

138

False-Negative Rate and Recovery Efficiency Performance of a Validated Sponge Wipe Sampling Method  

SciTech Connect

Recovery of spores from environmental surfaces varies due to sampling and analysis methods, spore size and characteristics, surface materials, and environmental conditions. Tests were performed to evaluate a new, validated sponge wipe method using Bacillus atrophaeus spores. Testing evaluated the effects of spore concentration and surface material on recovery efficiency (RE), false-negative rate (FNR), limit of detection (LOD), and their uncertainties. Ceramic tile and stainless steel had the highest mean RE values (48.9 and 48.1%, respectively). Faux leather, vinyl tile, and painted wood had mean RE values of 30.3, 25.6, and 25.5, respectively, while plastic had the lowest mean RE (9.8%). Results show roughly linear dependences of RE and FNR on surface roughness, with smoother surfaces resulting in higher mean REs and lower FNRs. REs were not influenced by the low spore concentrations tested (3.10x10^-3 to 1.86 CFU/cm^2). Stainless steel had the lowest mean FNR (0.123), and plastic had the highest mean FNR (0.479). The LOD90 (>1 CFU detected 90% of the time) varied with surface material, from 0.015 CFU/cm^2 on stainless steel up to 0.039 on plastic. It may be possible to improve sampling results by considering surface roughness in selecting sampling locations and interpreting spore recovery data. Further, FNR values (calculated as a function of concentration and surface material) can be used presampling to calculate the numbers of samples for statistical sampling plans with desired performance and postsampling to calculate the confidence in characterization and clearance decisions.

Krauter, Paula; Piepel, Gregory F.; Boucher, Raymond; Tezak, Matthew S.; Amidan, Brett G.; Einfeld, Wayne

2012-02-01T23:59:59.000Z

139

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

E-Print Network (OSTI)

Journal of High Performance Computing Applications, AugustConference on High Performance Computing and Communication (Symposium on High-Performance Computing in an Advanced

Taesombut, Nut

2007-01-01T23:59:59.000Z

140

Timing Synchronization and Node Localization in Wireless Sensor Networks: Efficient Estimation Approaches and Performance Bounds  

E-Print Network (OSTI)

Wireless sensor networks (WSNs) consist of a large number of sensor nodes, capable of on-board sensing and data processing, that are employed to observe some phenomenon of interest. With their desirable properties of flexible deployment, resistance to harsh environment and lower implementation cost, WSNs envisage a plethora of applications in diverse areas such as industrial process control, battle- field surveillance, health monitoring, and target localization and tracking. Much of the sensing and communication paradigm in WSNs involves ensuring power efficient transmission and finding scalable algorithms that can deliver the desired performance objectives while minimizing overall energy utilization. Since power is primarily consumed in radio transmissions delivering timing information, clock synchronization represents an indispensable requirement to boost network lifetime. This dissertation focuses on deriving efficient estimators and performance bounds for the clock parameters in a classical frequentist inference approach as well as in a Bayesian estimation framework. A unified approach to the maximum likelihood (ML) estimation of clock offset is presented for different network delay distributions. This constitutes an analytical alternative to prior works which rely on a graphical maximization of the likelihood function. In order to capture the imperfections in node oscillators, which may render a time-varying nature to the clock offset, a novel Bayesian approach to the clock offset estimation is proposed by using factor graphs. Message passing using the max-product algorithm yields an exact expression for the Bayesian inference problem. This extends the current literature to cases where the clock offset is not deterministic, but is in fact a random process. A natural extension of pairwise synchronization is to develop algorithms for the more challenging case of network-wide synchronization. Assuming exponentially distributed random delays, a network-wide clock synchronization algorithm is proposed using a factor graph representation of the network. Message passing using the max- product algorithm is adopted to derive the update rules for the proposed iterative procedure. A closed form solution is obtained for each node's belief about its clock offset at each iteration. Identifying the close connections between the problems of node localization and clock synchronization, we also address in this dissertation the problem of joint estimation of an unknown node's location and clock parameters by incorporating the effect of imperfections in node oscillators. In order to alleviate the computational complexity associated with the optimal maximum a-posteriori estimator, two iterative approaches are proposed as simpler alternatives. The first approach utilizes an Expectation-Maximization (EM) based algorithm which iteratively estimates the clock parameters and the location of the unknown node. The EM algorithm is further simplified by a non-linear processing of the data to obtain a closed form solution of the location estimation problem using the least squares (LS) approach. The performance of the estimation algorithms is benchmarked by deriving the Hybrid Cramer-Rao lower bound (HCRB) on the mean square error (MSE) of the estimators. We also derive theoretical lower bounds on the MSE of an estimator in a classical frequentist inference approach as well as in a Bayesian estimation framework when the likelihood function is an arbitrary member of the exponential family. The lower bounds not only serve to compare various estimators in our work, but can also be useful in their own right in parameter estimation theory.

Ahmad, Aitzaz 1984-

2012-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Expert Meeting Report: Achieving the Best Installed Performance from High-Efficiency Residential Gas Furnaces  

SciTech Connect

This report describes a Building America expert meeting hosted on July 28, 2011, by the Partnership for Advanced Residential Retrofit team. The purpose of this meeting was to identify installation practices that provide the best installed efficiency for residential gas furnaces, explain how AFUE and field efficiency can differ, and investigate the impact of installation practices on the efficiency and long-term durability of the furnace.

Brand, L.

2012-03-01T23:59:59.000Z

142

Minimum Description Length Model Selection  

E-Print Network (OSTI)

Minimum Description Length Model Selection Problems and Extensions Steven de Rooij #12;#12;Minimum Description Length Model Selection Problems and Extensions #12;ILLC Dissertation Series DS-2008-07 For further-mail: illc@science.uva.nl homepage: http://www.illc.uva.nl/ #12;Minimum Description Length Model Selection

143

Certifying Industrial Energy Efficiency Performance: Aligning Management, Measurement, and Practice to Create Market Value  

E-Print Network (OSTI)

corporate energy management and system energy efficiency,its corporate energy management system and is now seekinghas sustainable energy management systems in place, has

McKane, Aimee; Scheihing, Paul; Williams, Robert

2008-01-01T23:59:59.000Z

144

Coolerado 5 Ton RTU Performance: Western Cooling Challenge Results (Revised)  

Science Conference Proceedings (OSTI)

The Western Cooling Efficiency Center (WCEC) developed a set of criteria for test conditions, minimum energy, and water use performance for prototype cooling equipment and identified these conditions as indicative of western state climates.

Kozubal, E.; Slayzak, S.

2010-11-01T23:59:59.000Z

145

Developing a next-generation community college curriculum forenergy-efficient high-performance building operations  

Science Conference Proceedings (OSTI)

The challenges of increased technological demands in today's workplace require virtually all workers to develop higher-order cognitive skills including problem solving and systems thinking in order to be productive. Such ''habits of mind'' are viewed as particularly critical for success in the information-based workplace, which values reduced hierarchy, greater worker independence, teamwork, communications skills, non-routine problem solving, and understanding of complex systems. The need is particularly compelling in the buildings arena. To scope the problem, this paper presents the results of interviews and focus groups--conducted by Oakland California's Peralta Community College District and Lawrence Berkeley National Laboratory--in which approximately 50 industry stakeholders discussed contemporary needs for building operator education at the community college level. Numerous gaps were identified between the education today received by building operators and technicians and current workplace needs. The participants concurred that many of the problems seen today in achieving and maintaining energy savings in buildings can be traced to inadequacies in building operation and lack of awareness and knowledge about how existing systems are to be used, monitored, and maintained. Participants and others we interviewed affirmed that while these issues are addressed in various graduate-level and continuing education programs, they are virtually absent at the community college level. Based on that assessment of industry needs, we present a new curriculum and innovative simulation-based learning tool to provide technicians with skills necessary to commission and operate high-performance buildings, with particular emphasis on energy efficiency and indoor environmental quality in the context of HVAC&R equipment and control systems.

Crabtree, Peter; Kyriakopedi, Nick; Mills, Evan; Haves, Philip; Otto, Roland J.; Piette, Mary Ann; Xu, Peng; Diamond, Rick; Frost, Chuck; Deringer, Joe

2004-05-01T23:59:59.000Z

146

Theoretical Minimum Energy Use of a Building HVAC System  

E-Print Network (OSTI)

This paper investigates the theoretical minimum energy use required by the HVAC system in a particular code compliant office building. This limit might be viewed as the "Carnot Efficiency" for HVAC system. It assumes that all ventilation and air conditioning in the building are provided using the minimum energy value that does not violate physical law.

Tanskyi, O.

2011-01-01T23:59:59.000Z

147

Impact of New Federal Efficiency Performance Standards on the Industrial Motor Marketplace  

E-Print Network (OSTI)

The Energy Independence and Security Act of 2007 enacted new motor efficiency standards that will go into effect in December 2010. Previous motor efficiency standards, which were implemented as part of EPAct in 1992, caused some confusion within the motor marketplace. In part, this confusion lead to the development of NEMA’s Premium® label, which has since helped guide motor purchasers to buy efficient motors. As a companion activity, the awareness program Motor Decisions Matter was established to encourage the replacement of motors with more efficient technology rather than the repair of old, inefficient motors. The motor marketplace now faces similar confusion as the new standards will soon be implemented. It is therefore incumbent upon industrial motor users to begin planning for these standards now, both by developing new motor management plans and by updating repair/replace decision criteria to reflect changes in efficiency and price for motor replacement options. At the same time, it is incumbent upon motor efficiency programs and policymakers to address the anticipated negative market behavior trends that will likely result from the new standards’ implementation in the next few years.

Elliott, R. N.

2009-05-01T23:59:59.000Z

148

NREL Enables Efficient Data Exchange for Home Performance Companies (Fact Sheet), NREL Highlights in Research & Development  

SciTech Connect

NREL supports standard data transfer protocol to streamline communication of home performance tracking systems and upgrade analysis software.

Merket, N.

2014-01-01T23:59:59.000Z

149

Performance Evaluation of Energy-Efficient Lighting and Office Technologies in New York City  

Science Conference Proceedings (OSTI)

Lighting and office equipment are significant electricity end uses in commercial office buildings. Recent technology developments offer significant improvements in lighting quality along with potentially substantial reductions in lighting and office equipment electricity use. This project demonstrated successful application of energy-efficient lighting and office technologies in an office building in New York City.

1997-09-15T23:59:59.000Z

150

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

E-Print Network (OSTI)

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

Laros, James Howard III

2012-01-01T23:59:59.000Z

151

MINIMUM SECURITY REQUIREMENTS FOR FEDERAL  

E-Print Network (OSTI)

March 2006 MINIMUM SECURITY REQUIREMENTS FOR FEDERAL INFORMATION AND INFORMATION SYSTEMS: FEDERAL INFORMATION PROCESSING STANDARD (FIPS) 200 APPROVED BY THE SECRETARY OF COMMERCE MINIMUM SECURITY REQUIREMENTS BY THE SECRETARY OF COMMERCE Shirley Radack, EditorShirley Radack, Editor Computer Security Division

152

Quantum games and minimum entropy  

Science Conference Proceedings (OSTI)

This paper analyze Nash's equilibrium (maximum utility MU) and its relations with the order state(minimum entropy ME). I introduce the concept of minimum entropy as a paradigm of both Nash-Hayek's equilibrium. The ME concept is related to Quantum Games. ...

Edward Jiménez

2003-05-01T23:59:59.000Z

153

Development of an Online Toolkit for Measuring Commercial Building Energy Efficiency Performance -- Scoping Study  

SciTech Connect

This study analyzes the market needs for building performance evaluation tools. It identifies the existing gaps and provides a roadmap for the U.S. Department of Energy (DOE) to develop a toolkit with which to optimize energy performance of a commercial building over its life cycle.

Wang, Na

2013-03-13T23:59:59.000Z

154

Impact of ASHRAE standard 189.1-2009 on building energy efficiency and performance.  

E-Print Network (OSTI)

??The purpose of this report is to provide an introduction to the new ASHRAE Standard 189.1-2009, Standard for the Design of High-Performance Green Buildings. The… (more)

Blush, Aaron

2010-01-01T23:59:59.000Z

155

Window performance and building energy use: Some technical options for increasing energy efficiency  

Science Conference Proceedings (OSTI)

Window system design and operation has a major impact on energy use in buildings as well as on occupants’ thermal and visual comfort. Window performance will be a function of optical and thermal properties

Stephen Selkowitz

1985-01-01T23:59:59.000Z

156

Tradeoff between Efficiency and Melting for a High-Performance Electromagnetic Rail Gun  

E-Print Network (OSTI)

We estimate the temperature distribution in the rails of an electromagnetic rail gun (EMG) due to the confinement of the current in a narrow surface layer resulting from the skin effect. In order to obtain analytic results, we assume a simple geometry for the rails, an electromagnetic skin effect boundary edge that propagates with the accelerating armature, and a current carrying channel controlled by magnetic field diffusion into the rails. We compute the temperature distribution in the rails at the time that the armature leaves the rails. For the range of exit velocities, from 1500 m/s to 5000 m/s, we find the highest temperatures are near the gun breech. After a single gun firing, the temperature reaches the melting temperature of the metal rails in a layer of finite thickness near the surface of the rails, for rails made of copper or tantalum. We plot the thickness of the melt layer as a function of position along the rails. In all cases, the thickness of the melt layer increases with gun velocity, making damage to the gun rails more likely at higher velocity. We also calculate the efficiency of the EMG as a function of gun velocity and find that the efficiency increases with increasing velocity, but only if the length of the gun is sufficiently long. The thickness of the melted layer also decreases with increasing rail length. Therefore, there is a tradeoff: for rails of sufficient length, the gun efficiency increases with increasing velocity but the melted layer thickness in the rails also increases.

William C. McCorkle; Thomas B. Bahder

2008-10-16T23:59:59.000Z

157

Predicted versus monitored performance of energy-efficiency measures in new commercial buildings from energy edge  

SciTech Connect

Energy Edge is a research-oriented demonstration program involving 28 new commercial buildings in the Pacific Northwest. This paper discusses the energy savings and cost-effectiveness of energy-efficiency measures for the first 12 buildings evaluated using simulation models calibrated with measured end-use data. Average energy savings per building from the simulated code baseline building was 19%, less than the 30% target. The most important factor for the lower savings is that many of the installed measures differ from the measures specified in the design predictions. Only one of the first 12 buildings met the project objective of reducing energy use by more than 30% at a cost below the target of 56 mills/kWh (in 1991 dollars). Based on results from the first 12 calibrated simulation models, 29 of the 66 energy-efficiency measures, or 44%, met the levelized cost criterion. Despite the lower energy savings from individual measures, the energy-use intensities of the buildings are lower than other regional comparison data for new buildings. The authors review factors that contribute to the uncertainty regarding measured savings and suggest methods to improve future evaluations.

Piette, M.A.; Nordman, B.; deBuen, O.; Diamond, R.

1993-08-01T23:59:59.000Z

158

Micro-optics for high-efficiency optical performance and simplified tracking for concentrated photovoltaics (CPV).  

SciTech Connect

Micro-optical 5mm lenses in 50mm sub-arrays illuminate arrays of photovoltaic cells with 49X concentration. Fine tracking over {+-}10{sup o} FOV in sub-array allows coarse tracking by meter-sized solar panels. Plastic prototype demonstrated for 400nm < {lambda} < 1600 nm. We have designed a solar collector that will be composed of 50-mm-diameter sub-arrays, each containing {approx}100 5-mm plastic micro-lenses. Each micro-lens illuminates a stack of about four 0.7mm PV cells that collect sunlight from 400nm to 1600 nm with a theoretical efficiency approaching 50%. Each sub-array has internal solar tracking and alignment over a {+-}10{sup o} field, so a large array of sub-arrays only needs to coarsely track the sun. The refractive lenses in the design are thin so the optical transmission can be >90% and the optics will weigh very little. There are other optical properties incorporated in this design that help the photovoltaic cells to operate very efficiently. We are building a pre-prototype system now, and will describe our progress at the conference.

Sinclair, Michael B.; Filatov, Anton; Lentine, Anthony L.; Sweatt, William C.; Nielson, Gregory N.; Okandan, Murat; Jared, Bradley Howell

2010-02-01T23:59:59.000Z

159

Minimum Gas Service Standards (Ohio)  

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

Natural gas companies in Ohio are required to follow the Minimum Gas Service Standards, which are set and enforced by the Public Utilities Commission of Ohio. These rules are found in chapter 4901...

160

Performance of Heat Pump Water Heaters: Initial Findings of Draw Profile Effect on HPWH Efficiency  

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

Performance of Heat Pump Water Heaters Performance of Heat Pump Water Heaters © 2011 Steven Winter Associates, Inc. All rights reserved. © 2011 Steven Winter Associates, Inc. All rights reserved. Evaluation Overview  2000-2002 Evaluated 20 installations with CL&P  Product had problems; not ready for prime time (average COPs of 1.67 was not the problem)  New batch of heaters available, including:  GE's GeoSpring Hybrid (50 gal)  A.O.Smith's Voltex Hybrid (60 & 80 gal)  Stiebel-Eltron's Accelera 300 (80 gal)  Evaluating 14 installations for National Grid, NSTAR, & Cape Light Compact. © 2011 Steven Winter Associates, Inc. All rights reserved. © 2011 Steven Winter Associates, Inc. All rights reserved.

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


161

Annual Performance Evaluation of a Pair of Energy Efficient Houses (WC3 and WC4) in Oak Ridge, TN  

SciTech Connect

Beginning in 2008, two pairs of energy-saver houses were built at Wolf Creek in Oak Ridge, TN. These houses were designed to maximize energy efficiency using new ultra-high-efficiency components emerging from ORNL s Cooperative Research and Development Agreement (CRADA) partners and others. The first two houses contained 3713 square feet of conditioned area and were designated as WC1 and WC2; the second pair consisted of 2721 square feet conditioned area with crawlspace foundation and they re called WC3 and WC4. This report is focused on the annual energy performance of WC3 and WC4, and how they compare against a previously benchmarked maximum energy efficient house of a similar footprint. WC3 and WC4 are both about 55-60% more efficient than traditional new construction. Each house showcases a different envelope system: WC3 is built with advanced framing featured cellulose insulation partially mixed with phase change materials (PCM); and WC4 house has cladding composed of an exterior insulation and finish system (EIFS). The previously benchmarked house was one of three built at the Campbell Creek subdivision in Knoxville, TN. This house (CC3) was designed as a transformation of a builder house (CC1) with the most advanced energy-efficiency features, including solar electricity and hot water, which market conditions are likely to permit within the 2012 2015 period. The builder house itself was representative of a standard, IECC 2006 code-certified, all-electric house built by the builder to sell around 2005 2008.

Biswas, Kaushik [ORNL; Christian, Jeffrey E [ORNL; Gehl, Anthony C [ORNL; Jackson, Roderick K [ORNL; Boudreaux, Philip R [ORNL

2012-04-01T23:59:59.000Z

162

HybridStore: A Cost-Efficient, High-Performance Storage System Combining SSDs and HDDs  

SciTech Connect

Unlike the use of DRAM for caching or buffering, certain idiosyncrasies of NAND Flash-based solid-state drives (SSDs) make their integration into existing systems non-trivial. Flash memory suffers from limits on its reliability, is an order of magnitude more expensive than the magnetic hard disk drives (HDDs), and can sometimes be as slow as the HDD (due to excessive garbage collection (GC) induced by high intensity of random writes). Given these trade-offs between HDDs and SSDs in terms of cost, performance, and lifetime, the current consensus among several storage experts is to view SSDs not as a replacement for HDD but rather as a complementary device within the high-performance storage hierarchy. We design and evaluate such a hybrid system called HybridStore to provide: (a) HybridPlan: improved capacity planning technique to administrators with the overall goal of operating within cost-budgets and (b) HybridDyn: improved performance/lifetime guarantees during episodes of deviations from expected workloads through two novel mechanisms: write-regulation and fragmentation busting. As an illustrative example of HybridStore s ef cacy, HybridPlan is able to nd the most cost-effective storage con guration for a large scale workload of Microsoft Research and suggest one MLC SSD with ten 7.2K RPM HDDs instead of fourteen 7.2K RPM HDDs only. HybridDyn is able to reduce the average response time for an enterprise scale random-write dominant workload by about 71% as compared to a HDD-based system.

Kim, Youngjae [ORNL; Gupta, Aayush [Pennsylvania State University, University Park, PA; Urgaonkar, Bhuvan [Pennsylvania State University; Piotr, Berman [Pennsylvania State University, University Park, PA; Sivasubramaniam, Anand [Pennsylvania State University

2011-01-01T23:59:59.000Z

163

Energy Efficiency Investments in Public Facilities - Developing a Pilot Mechanism for Energy Performance Contracts (EPCs) in Russia  

SciTech Connect

: Russian public sector buildings tend to be very inefficient, which creates vast opportunities for savings. This report overviews the latest developments in the Russian legislation related to energy efficiency in the public sector, describes the major challenges the regulations pose, and proposes ways to overcome these challenges. Given Russia’s limited experience with energy performance contracts (EPCs), a pilot project can help test an implementation mechanism. This paper discusses how EPCs and other mechanisms can help harness energy savings opportunities in Russia in general, and thus, can be applicable to any Russian region.

Evans, Meredydd; Roshchanka, Volha; Parker, Steven A.; Baranovskiy, Aleksandr

2012-02-01T23:59:59.000Z

164

Commit to Energy Efficiency Campaign Pledge Form  

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

Specifying and Selecting I will request energy-efficient products that meet or exceed FEMP-designated or ENERGY STAR minimum efficiency requirements whenever I specify,...

165

Position Paper on Practicable Performance Criteria for the Removal Efficiency of Volatile Radionuclides  

SciTech Connect

As a result of fuel reprocessing, volatile radionuclides may be released from the facility stack if no processes are put in place to remove them. The radionuclides that are of concern in this document are 3H, 14C, 85Kr, and 129I. The question we attempted to answer is how efficient must this removal process be for each of these radionuclides? To answer this question, we examined the three regulations that may impact the degree to which these radionuclides must be reduced before process gases can be released from the facility. These regulations are 40 CFR 61 (EPA 2010a), 40 CFR 190(EPA 2010b), and 10 CFR 20 (NRC 2012). These regulations apply to the total radionuclide release and to a particular organ - the thyroid. Because these doses can be divided amongst all the radionuclides in different ways and even within the four radionuclides in question, we provided several cases. We first looked at the inventories for these radionuclides for three fuel types (PWR UOX, PWR MOX, and AHTGR), several burn-up values, and time out of reactor extending to 200 y. We calculated doses to the maximum exposed individual (MEI) with the EPA code CAP-88 (Rosnick 1992). Finally, we looked at two dose cases. Allocating all of the allowable dose to be used by the volatile radionuclides is one case, but, perhaps, unrealistic. In lieu of this, we arbitrarily selected a value of 10% of the allowable dose to be assigned to the volatile radionuclides. We calculated the required decontamination factors (DFs) for both of these cases, including the case for the thyroid dose for which 14C and 129I were the main contributors. With respect to 129I doses, we found that the highest dose was calculated with iodine as a fine particulate. The dose scaled as the fraction of the total 129I that was particulate. Therefore, we assumed for all of our calculations that 100% of the 129I was particulate and allow the user of the results given here to scale our calculated doses to their needs.

R. T. Jubin; N. Soelberg; D. M. Strachan

2012-03-01T23:59:59.000Z

166

The cost and performance of utility commercial lighting programs. A report from the Database on Energy Efficiency Programs (DEEP) project  

SciTech Connect

The objective of the Database on Energy Efficiency Programs (DEEP) is to document the measured cost and performance of utility-sponsored, energy-efficiency, demand-side management (DSM) programs. Consistent documentation of DSM programs is a challenging goal because of problems with data consistency, evaluation methodologies, and data reporting formats that continue to limit the usefulness and comparability of individual program results. This first DEEP report investigates the results of 20 recent commercial lighting DSM programs. The report, unlike previous reports of its kind, compares the DSM definitions and methodologies that each utility uses to compute costs and energy savings and then makes adjustments to standardize reported program results. All 20 programs were judged cost-effective when compared to avoided costs in their local areas. At an average cost of 3.9{cents}/kWh, however, utility-sponsored energy efficiency programs are not ``too cheap to meter.`` While it is generally agreed upon that utilities must take active measures to minimize the costs and rate impacts of DSM programs, the authors believe that these activities will be facilitated by industry adoption of standard definitions and reporting formats, so that the best program designs can be readily identified and adopted.

Eto, J.; Vine, E.; Shown, L.; Sonnenblick, R.; Payne, C. [Lawrence Berkeley Lab., CA (United States). Energy and Environment Div.

1994-05-01T23:59:59.000Z

167

Credible Research Designs for Minimum Wage Studies  

E-Print Network (OSTI)

Credible Research Designs for Minimum Wage Studies SylviaWe assess alternative research designs for minimum wageAllegretto: Institute for Research on Labor and Employment,

Allegretto, Sylvia; Dube, Arindrajit; Reich, Michael; Zipperer, Ben

2013-01-01T23:59:59.000Z

168

Energy efficiency vs. performance of the numerical solution of PDEs: An application study on a low-power ARM-based cluster  

Science Conference Proceedings (OSTI)

Power consumption and energy efficiency are becoming critical aspects in the design and operation of large scale HPC facilities, and it is unanimously recognised that future exascale supercomputers will be strongly constrained by their power requirements. ... Keywords: ARM processors, Energy efficiency, Finite elements, High performance computing, Lattice-Boltzmann, Low-power processors, Multigrid, Parallel scalability, Wave propagation

Dominik GöDdeke; Dimitri Komatitsch; Markus Geveler; Dirk Ribbrock; Nikola Rajovic; Nikola Puzovic; Alex Ramirez

2013-03-01T23:59:59.000Z

169

Welcome to the Efficient Windows Collaborative  

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

Performance Standards Performance Standards Even the expert eye cannot easily tell an efficient window from a conventional window. That is why energy ratings, endorsement programs and consumer incentives play an important role in creating awareness for window energy efficiency among consumers, builders, architects and performance standard programs. Learn about NFRC certification and labeling Learn about ENERGY STAR® for windows, doors and skylights High Performance Windows and Low-E Storm Windows Volume Purchase Program Utility and State Incentives for energy efficiency improvements Building Codes Most locations have building energy codes that mandate minimum performance levels for windows, doors, and skylights. The builder, contractor or homeowner must adhere to the code requirements, which typically cover

170

Asynchronous and Multiprecision Linear Solvers - Scalable and Fault-Tolerant Numerics for Energy Efficient High Performance Computing.  

E-Print Network (OSTI)

??Asynchronous methods minimize idle times by removing synchronization barriers, and therefore allow the efficient usage of computer systems. The implied high tolerance with respect to… (more)

Anzt, Hartwig

2012-01-01T23:59:59.000Z

171

Abstract--Many functions within a substation can be performed more efficiently if all the substation data is collected  

E-Print Network (OSTI)

components for the voltage is performed applying Fortescue transform. Two variables are defined: ratio

172

Avista Utilities (Electric) - Residential Energy Efficiency Rebate...  

Open Energy Info (EERE)

for manufactured homes) Water Heater: .93 EF minimum Insulation: Must increase the R value by R10 or greater Other equipment: Must meet the efficiency requirements on the...

173

Federal Energy Management Program: Federal Energy Efficiency...  

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

Fluorescent Tube Lamps FEMP temporarily suspended its energy efficiency requirements for fluorescent tube lamps as it evaluates the market impact of the pending 2012 minimum...

174

Zero forcing parameters and minimum rank problems  

E-Print Network (OSTI)

The zero forcing number Z(G), which is the minimum number of vertices in a zero forcing set of a graph G, is used to study the maximum nullity / minimum rank of the family of symmetric matrices described by G. It is shown that for a connected graph of order at least two, no vertex is in every zero forcing set. The positive semidefinite zero forcing number Z_+(G) is introduced, and shown to be equal to |G|-OS(G), where OS(G) is the recently defined ordered set number that is a lower bound for minimum positive semidefinite rank. The positive semidefinite zero forcing number is applied to the computation of positive semidefinite minimum rank of certain graphs. An example of a graph for which the real positive symmetric semidefinite minimum rank is greater than the complex Hermitian positive semidefinite minimum rank is presented.

Barioli, Francesco; Fallat, Shaun M; Hall, H Tracy; Hogben, Leslie; Shader, Bryan; Driessche, P van den; van der Holst, Hein

2010-01-01T23:59:59.000Z

175

Cape Charles - STIP Minimum Sustainability Requirements (Virginia...  

Open Energy Info (EERE)

Share this page on Facebook icon Twitter icon Cape Charles - STIP Minimum Sustainability Requirements (Virginia) This is the approved revision of this page, as well as...

176

Parabolic equations without a minimum principle.  

E-Print Network (OSTI)

??In this thesis, we consider several parabolic equations for which the minimum principle fails. We first consider a two-point boundary value problem for a one… (more)

Pang, Huadong

2007-01-01T23:59:59.000Z

177

DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS...  

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

MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY...

178

Green HPC : a system design approach to energy-efficient datacenters; Green High Performance Computing : a system design approach to energy-efficient datacenters; System design approach to energy-efficient data centers.  

E-Print Network (OSTI)

??Green HPC is the new standard for High Performance Computing (HPC). This has now become the primary interest among HPC researchers because of a renewed… (more)

Keville, Kurt (Kurt Lawrence)

2011-01-01T23:59:59.000Z

179

Stochastic Variational Approach to Minimum Uncertainty States  

E-Print Network (OSTI)

We introduce a new variational characterization of Gaussian diffusion processes as minimum uncertainty states. We then define a variational method constrained by kinematics of diffusions and Schr\\"{o}dinger dynamics to seek states of local minimum uncertainty for general non-harmonic potentials.

F. Illuminati; L. Viola

1995-01-11T23:59:59.000Z

180

A New Minimum Temperature Record for Oklahoma  

Science Conference Proceedings (OSTI)

A minimum temperature of ?31°F (?35°C) was recorded at Nowata, Oklahoma, on 10 February 2011. This exceeded the previous record minimum temperature for Oklahoma of ?27°F (?32.8°C). The Nowata station is in the Oklahoma Mesonet network. High pressure was ...

Gary McManus; Thomas W. Schmidlin; Christopher A. Fiebrich

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

The Performance House: A Cold Climate Challenge Home, Old Greenwich, Connecticut (Fact Sheet), Building America Case Study: Efficient Solutions for New and Existing Homes, Building Technologies Office (BTO)  

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

The Performance House: The Performance House: A Cold Climate Challenge Home Old Greenwich, Connecticut PROJECT INFORMATION Project Name: Performance House Location: Old Greenwich, CT Partners: Preferred Builders Inc. www.preferredbuilders.biz Consortium for Advanced Residential Buildings www.carb-swa.com Size: 2,700 ft 2 plus basement Year Completed: 2012 Climate Zone: Cold PERFORMANCE DATA Source Energy Savings: 30.9% HERS Index: 43 (20 with PV) Projected Annual Utility Costs: $2,508; $795 with PV Incremental Cost of Energy Efficiency Measures: $47,337 (excluding PV) Savings-to-Investment Ratio (over 15 years): * Solution Package (SP) = 0.29 * SP with Incentives = 0.34 * SP with Solar = 0.52 * SP with Solar & Incentives = 0.82 By working with builder partners on test homes, researchers from the U.S.

182

Developing a next-generation community college curriculum for energy-efficient high-performance building operations  

E-Print Network (OSTI)

Energy and Buildings, 33, 309-317. Wiggins, G. and McTighe,of the broader energy and building performance issues. NorSolution Strategies for Building Energy System Simulation. ”

2004-01-01T23:59:59.000Z

183

Boulder, Colorado's SmartRegs: Minimum Performance Standards...  

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

and Megan A. Billingsley Year of Publication 2012 Date Published 032012 Keywords electricity markets and policy group, energy analysis and environmental impacts department,...

184

Image transmission over OFDM channel with rate allocation scheme and minimum peak-toaverage power ratio  

E-Print Network (OSTI)

This paper proposes new scheme for efficient rate allocation in conjunction with reducing peak-to-average power ratio (PAPR) in orthogonal frequency-division multiplexing (OFDM) systems. Modification of the set partitioning in hierarchical trees (SPIHT) image coder is proposed to generate four different groups of bit-stream relative to its significances. The significant bits, the sign bits, the set bits and the refinement bits are transmitted in four different groups. The proposed method for reducing the PAPR utilizes twice the unequal error protection (UEP), using the Read-Solomon codes (RS), in conjunction with bit-rate allocation and selective interleaving to provide minimum PAPR. The output bit-stream from the source code (SPIHT) will be started by the most significant types of bits (first group of bits). The optimal unequal error protection (UEP) of the four groups is proposed based on the channel destortion. The proposed structure provides significant improvement in bit error rate (BER) performance. Per...

Mohammed, Usama S

2010-01-01T23:59:59.000Z

185

Rebuilding It Better: Greensburg, Kansas, High Performance Buildings Meeting Energy Savings Goals (Brochure) (Revised), Energy Efficiency & Renewable Energy (EERE)  

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

On May 4, 2007, a massive tornado destroyed or severely damaged 95% On May 4, 2007, a massive tornado destroyed or severely damaged 95% of Greensburg, Kansas. Since then, city and community leaders have been committed to rebuilding the town as a model sustainable community. Experts from the U.S. Department of Energy (DOE) and the National Renewable Energy Laboratory (NREL) worked with city leaders, business owners, and residents to identify ways to incorporate energy efficiency and renewable energy technologies into the new buildings. The town showcases energy-saving best practices that can be replicated not only in other communi- ties recovering from disaster, but any location focused on sustainability. The Town of Greensburg Founded in 1886, Greensburg had a population of approximately 1,400 people prior to the tornado, and relied on the agricultural, oil, and gas industries to

186

Rebuilding It Better: Greensburg, Kansas, High Performance Buildings Meeting Energy Savings Goals (Brochure) (Revised), Energy Efficiency & Renewable Energy (EERE)  

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

On May 4, 2007, a massive tornado destroyed or severely damaged 95% On May 4, 2007, a massive tornado destroyed or severely damaged 95% of Greensburg, Kansas. Since then, city and community leaders have been committed to rebuilding the town as a model sustainable community. Experts from the U.S. Department of Energy (DOE) and the National Renewable Energy Laboratory (NREL) worked with city leaders, business owners, and residents to identify ways to incorporate energy efficiency and renewable energy technologies into the new buildings. The town showcases energy-saving best practices that can be replicated not only in other communi- ties recovering from disaster, but any location focused on sustainability. The Town of Greensburg Founded in 1886, Greensburg had a population of approximately 1,400 people prior to the tornado, and relied on the agricultural, oil, and gas industries to

187

Microbial oceanography of anoxic oxygen minimum zones  

E-Print Network (OSTI)

Vast expanses of oxygen-deficient and nitrite-rich water define the major oxygen minimum zones (OMZs) of the global ocean. They support diverse microbial communities that influence the nitrogen economy of the oceans, ...

Ulloa, Osvaldo

188

Parabolic equations without a minimum principle  

E-Print Network (OSTI)

In this thesis, we consider several parabolic equations for which the minimum principle fails. We first consider a two-point boundary value problem for a one dimensional diffusion equation. We show the uniqueness and ...

Pang, Huadong

2007-01-01T23:59:59.000Z

189

Energy Efficient Motors  

E-Print Network (OSTI)

Efficiency is only one aspect of motor performance. This paper discusses how efficiency is influenced by such factors as horsepower rating, poles, actual load, and starting requirements. It discusses some of the variables affecting efficiency, and how to interpret efficiency data. A perspective is given from which to evaluate available energy efficient motor offerings for a given application.

Hoffmeyer, W.

1982-01-01T23:59:59.000Z

190

Information-theoretic CAD system in mammography: Entropy-based indexing for computational efficiency and robust performance  

SciTech Connect

We have previously presented a knowledge-based computer-assisted detection (KB-CADe) system for the detection of mammographic masses. The system is designed to compare a query mammographic region with mammographic templates of known ground truth. The templates are stored in an adaptive knowledge database. Image similarity is assessed with information theoretic measures (e.g., mutual information) derived directly from the image histograms. A previous study suggested that the diagnostic performance of the system steadily improves as the knowledge database is initially enriched with more templates. However, as the database increases in size, an exhaustive comparison of the query case with each stored template becomes computationally burdensome. Furthermore, blind storing of new templates may result in redundancies that do not necessarily improve diagnostic performance. To address these concerns we investigated an entropy-based indexing scheme for improving the speed of analysis and for satisfying database storage restrictions without compromising the overall diagnostic performance of our KB-CADe system. The indexing scheme was evaluated on two different datasets as (i) a search mechanism to sort through the knowledge database, and (ii) a selection mechanism to build a smaller, concise knowledge database that is easier to maintain but still effective. There were two important findings in the study. First, entropy-based indexing is an effective strategy to identify fast a subset of templates that are most relevant to a given query. Only this subset could be analyzed in more detail using mutual information for optimized decision making regarding the query. Second, a selective entropy-based deposit strategy may be preferable where only high entropy cases are maintained in the knowledge database. Overall, the proposed entropy-based indexing scheme was shown to reduce the computational cost of our KB-CADe system by 55% to 80% while maintaining the system's diagnostic performance.

Tourassi, Georgia D.; Harrawood, Brian; Singh, Swatee; Lo, Joseph Y. [Digital Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705 (United States); Digital Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705 (United States) and Department of Biomedical Engineering, Duke University, Durham, North Carolina 27710 (United States)

2007-08-15T23:59:59.000Z

191

Assessment of Electrical, Efficiency, and Photometric Performance of Advanced Lighting Sources: Dimmable Advanced Lighting Technolog ies -- Electronic Linear Fluorescent Ballasts  

Science Conference Proceedings (OSTI)

This EPRI Technical Update is one of four in a series that addresses the basic dimming performance of advanced lighting sources8212linear electronic fluorescent ballasts. Chapter 1 provides a discussion of basic lighting control, the importance of considering power quality in lighting control, lighting control methods and parameters, and the advantages and future of lighting control. Chapter 2 addresses in more depth dimming methods used in advanced lighting sources and controls for incandescent, fluores...

2008-12-15T23:59:59.000Z

192

Effect of Mg ionization efficiency on performance of Npn AlGaN/GaN heterojunction bipolar transistors  

SciTech Connect

A drift-diffusion transport model has been used to examine the performance capabilities of AlGaN/GaN Npn heterojunction bipolar transistors (HBTs). The Gummel plot from the first GaN-based HBT structure recently demonstrated is adjusted with simulation by using experimental mobility and lifetime reported in the literature. Numerical results have been explored to study the effect of the p-type Mg doping and its incomplete ionization in the base. The high base resistance induced by the deep acceptor level is found to be the cause of limiting current gain values. Increasing the operating temperature of the device activates more carriers in the base. An improvement of the simulated current gain by a factor of 2 to 4 between 25 and 300 C agrees well with the reported experimental results. A preliminary analysis of high frequency characteristics indicates substantial progress of predicted rf performances by operating the device at higher temperature due to a reduced extrinsic base resistivity.

MONIER,C.; PEARTON,S.J.; CHANG,PING-CHIH; BACA,ALBERT G.

2000-03-10T23:59:59.000Z

193

Minimum bayes risk decoding with enlarged hypothesis space in system combination  

Science Conference Proceedings (OSTI)

This paper describes a new system combination strategy in Statistical Machine Translation. Tromble et al. (2008) introduced the evidence space into Minimum Bayes Risk decoding in order to quantify the relative performance within lattice or n-best output ...

Tsuyoshi Okita; Josef van Genabith

2012-03-01T23:59:59.000Z

194

Building America Efficient Solutions for New Homes Case Study: Tommy Williams Homes Initial Performance of Two Zero Energy Homes, Gainesville, Florida  

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

Description Description These high-performance homes in northern Florida are two that have achieved Home Energy Rating System (HERS) ratings of less than zero since Building America (BA) builders started building them in 2010. The homes (TW1 and TW2) were built in the Gainesville area by Tommy Williams Homes (TW), with technical assistance from Florida H.E.R.O. and energy-efficient home design input provided by Energy Smart Home Plans. The homes are being metered by the Florida Solar Energy Center (FSEC) as part of BA efforts to collect data that characterize the performance of the homes and verify that the solar photovoltaic (PV) system used in their design produces more energy than these all-electric homes require, as the HERS rating of <0 implies.

195

An efficient solar energy harvester for wireless sensor nodes  

E-Print Network (OSTI)

Solar harvesting circuits have been recently proposed to increase the autonomy of embedded systems. One key design challenge is how to optimize the efficiency of solar energy collection under non stationary light conditions. This paper proposes a scavenger that exploits miniaturized photovoltaic modules to perform automatic maximum power point tracking at a minimum energy cost. The system adjusts dynamically to the light intensity variations and its measured power consumption is less than 1mW. Experimental results show increments of global efficiency up to 80%, diverging from ideal situation by less than 10%, and demonstrate the flexibility and the robustness of our approach. 1.

Davide Brunelli; Luca Benini; Clemens Moser; Lothar Thiele

2008-01-01T23:59:59.000Z

196

Minimum error discrimination of Pauli channels  

E-Print Network (OSTI)

We solve the problem of discriminating with minimum error probability two given Pauli channels. We show that, differently from the case of discrimination between unitary transformations, the use of entanglement with an ancillary system can strictly improve the discrimination, and any maximally entangled state allows to achieve the optimal discrimination. We also provide a simple necessary and sufficient condition in terms of the structure of the channels for which the ultimate minimum error probability can be achieved without entanglement assistance. When such a condition is satisfied, the optimal input state is simply an eigenstate of one of the Pauli matrices.

Massimiliano F. Sacchi

2005-06-09T23:59:59.000Z

197

DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS...  

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

CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: CORE COMPETENCY...

198

Focus on Energy - Commercial/Industrial Efficiency in New Construction...  

Open Energy Info (EERE)

certain minimum energy efficiency standards, and custom incentives based on the estimated energy savings compared to a baseline building. Custom incentives for electricity and...

199

Appliance Efficiency Standards  

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

6 6 Appliance Efficiency Standards Part 2 of 2: Policy process and consumer gains Part 1 of this article (CBS News, Spring 1995) discussed LBNL's role in setting federal appliance efficiency standards and presented an overview of the net national benefits of standards. Here, we examine the broader policy context for appliance standards and consumer benefits. Policy Context Appliance efficiency standards provide a minimum requirement for energy efficiency at the point of manufacture (or import). These standards seek to overcome market failures-including price distortions and transaction costs-that have historically given rise to a gap between observed and attainable product efficiencies. In this way, appliance standards complement information programs, utility DSM and other incentive programs,

200

Multi-band high efficiency power amplifier  

E-Print Network (OSTI)

Baseline) Output Power (Transformer) Drain Efficiency (Performance Frequency (GHz) Output Power (Transformer) DrainEfficiency (Transformer) Output Power (Baseline) Drain

Besprozvanny, Randy-Alexander Randolph

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Verdigris Valley Electric Cooperative - Residential Energy Efficiency...  

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

.90 efficiency rating minimum Dual FuelAir Source Heat Pumps: Energy Star rated; SEEREER value of 16.5 or greater Geothermal Heat Pumps (replacing existing geothermal heat...

202

Louisville Gas & Electric - Residential Energy Efficiency Rebate...  

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

50 Window Film: 50% of material cost, up to 200 Central AC: 100, plus 100 for each SEER above minimum federal high efficiency standard Air-Source Heat Pump: 100, plus 100...

203

City of Memphis- Energy Efficiency of Rental Properties  

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

The city of Memphis adopted an ordinance in spring 2009 to improve the energy efficiency of the rental housing stock throughout the city. The ordinance establishes minimum energy efficiency...

204

ENTRY LOBBY ENERGY EFFICIENCY  

E-Print Network (OSTI)

ENTRY LOBBY ENERGY EFFICIENCY Clerestory windows provide natural day-lighting.· Exterior roof SUSTAINABILITY FEATURES #12;ADMINISTRATION ENERGY EFFICIENCY High performance window glazing· minimizes heat gain. Skylights provide natural day-lighting.· High-efficiency lighting reduces energy· costs and heat gain

Escher, Christine

205

Energy Conservation vs. Energy Efficiency  

Science Conference Proceedings (OSTI)

Energy conservation is considered by some as synonymous with energy efficiency, but to others, it has a meaning of getting fewer or lower quality energy services. The degree of confusion between these meanings varies widely by individual, culture, historic period and language spoken. In the context of this document, energy conservation means to keep from being lost or wasted; saved, and energy efficiency means the ability to produce a desired effect or product with a minimum of effort, expense or waste.

Somasundaram, Sriram

2010-09-30T23:59:59.000Z

206

Minimum wear tube support hole design  

DOE Patents (OSTI)

A minimum-wear through-bore (16) is defined within a heat exchanger tube support plate (14) so as to have an hourglass configuration as determined by means of a constant radiused surface curvature (18) as defined by means of an external radius (R3), wherein the surface (18) extends between the upper surface (20) and lower surface (22) of the tube support plate (14). When a heat exchange tube (12) is disposed within the tube support plate (14) so as to pass through the through-bore (16), the heat exchange tube (12) is always in contact with a smoothly curved or radiused portion of the through-bore surface (16) whereby unacceptably excessive wear upon the heat exchange tube (12), as normally developed by means of sharp edges, lands, ridges, or the like conventionally part of the tube support plates, is eliminated or substantially reduced.

Glatthorn, Raymond H. (St. Petersburg, FL)

1986-01-01T23:59:59.000Z

207

Geometric Complexity and Minimum Description Length Principle  

E-Print Network (OSTI)

The question of how one should decide among competing explanations of data is at the heart of the scientific enterprise. Quantitative methods of selecting among models have been advanced over the years without an underlying theoretical framework to guide the enterprise and evaluate new developments. In this paper, we show that differential geometry provides a unified understanding of the model selection problem. Foremost among its contributions is a reconceptualization of the problem as one of counting probability distributions. This reconceptualization naturally leads to development of a "geometric" complexity measure, which turns out to be equal to the Minimum Description Length (MDL) complexity measure Rissanen (1996) recently proposed. We demonstrate an application of the geometric complexity measure to model selection in cognitive psychology, with models of cognitive modeling in three different areas (psychophysics, information integration, categorization).

In Jae Myung; Shaobo Zhang; Mark A. Pitt

1999-01-01T23:59:59.000Z

208

Efficiency Measures  

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

recommended steam system energy efficiency measures Based on analyses implementation of steam system energy efficiency measures is driven primarily by cost metrics payback period...

209

Energy-efficient pipelines  

E-Print Network (OSTI)

We discuss the design of energy-efficient pipelines for asynchronous VLSI architectures. To maximize throughput in asynchronous pipelines it is often necessary to insert buffer stages, increasing the energy overhead. Instead of optimizing pipelines for minimum energy or maximum throughput, we consider a joint energy-time metric of the form ? ?,where?is the energy per operation and ? is the time per operation. We show that pipelines optimized for the ? ? energy-time metric may need fewer buffer stages and we give bounds when such stages can be removed. We present several common asynchronous pipeline structures and their energy-time optimized solutions. 1.

John Teifel; David Fang; David Biermann; Clint Kelly; Rajit Manohar

2002-01-01T23:59:59.000Z

210

A steady-state L-mode tokamak fusion reactor : large scale and minimum scale  

E-Print Network (OSTI)

We perform extensive analysis on the physics of L-mode tokamak fusion reactors to identify (1) a favorable parameter space for a large scale steady-state reactor and (2) an operating point for a minimum scale steady-state ...

Reed, Mark W. (Mark Wilbert)

2010-01-01T23:59:59.000Z

211

Minimum Additive Waste Stabilization (MAWS). Technology summary  

Science Conference Proceedings (OSTI)

In the Minimum Additive Waste Stabilization(MAWS) concept, actual waste streams are utilized as additive resources for vitrification, which may contain the basic components (glass formers and fluxes) for making a suitable glass or glassy slag. If too much glass former is present, then the melt viscosity or temperature will be too high for processing; while if there is too much flux, then the durability may suffer. Therefore, there are optimum combinations of these two important classes of constituents depending on the criteria required. The challenge is to combine these resources in such a way that minimizes the use of non-waste additives yet yields a processable and durable final waste form for disposal. The benefit to this approach is that the volume of the final waste form is minimized (waste loading maximized) since little or no additives are used and vitrification itself results in volume reduction through evaporation of water, combustion of organics, and compaction of the solids into a non-porous glass. This implies a significant reduction in disposal costs due to volume reduction alone, and minimizes future risks/costs due to the long term durability and leach resistance of glass. This is accomplished by using integrated systems that are both cost-effective and produce an environmentally sound waste form for disposal. individual component technologies may include: vitrification; thermal destruction; soil washing; gas scrubbing/filtration; and, ion-exchange wastewater treatment. The particular combination of technologies will depend on the waste streams to be treated. At the heart of MAWS is vitrification technology, which incorporates all primary and secondary waste streams into a final, long-term, stabilized glass wasteform. The integrated technology approach, and view of waste streams as resources, is innovative yet practical to cost effectively treat a broad range of DOE mixed and low-level wastes.

Not Available

1994-02-01T23:59:59.000Z

212

Building Information Modeling - A Minimum Mathematical Configuration  

E-Print Network (OSTI)

In the current context, the standardization of building construction is not limited to a specific country or to a specific building code. Trade globalization has emphasized the need for standardization in the process of exchange of design information, whether it is in the form of drawings or documents. Building Information Modeling is the latest transformational technology that supports interactive development of design information for buildings. No single Building Information Modeling software package is used in the Architecture Engineering Construction and Facilities Management industries, which is strength as new ideas develop, but a hindrance as the new ideas flow at a different pace into the various programs. The standards divergence of various software results in a limited ability to exchange data between and within projects, especially one sees the difficulty in moving data from one program to another. The Document eXchange File format represents an early attempt to standardize the exchange of drawing information by Autodesk. However, the data was limited to geometric data required for the production of plotted drawings. Metadata in a Building Information Model provides a method to add information to the basic geometric configuration provided in a Document eXchange File. Building Information Model programs use data structures to define smart objects that encapsulate building data in a searchable and robust format. Due to the complexity of building designs eXtensible Markup Language schemas of three dimensional models are often large files that can contain considerable amounts of superfluous information. The aim of this research is to exclude all the superfluous information from the design information and determine the absolute minimum information required to execute the construction of a project. A plain concrete beam element was used as the case study for this research. The results show that a minimal information schema can be developed for a simple building element. Further research is required on more complex elements.

Bhandare, Ruchika

2012-08-01T23:59:59.000Z

213

Energy Efficient Technologies  

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

Energy Efficient Technologies Energy Efficient Technologies Energy efficient technologies are available now! Many of the vehicles currently on display in dealer showrooms boast new performance-enhancing, fuel-saving technologies that can save you money. Engine Technologies Transmission Technologies All Engine Technology Average Efficiency Increase Variable Valve Timing & Lift improve engine efficiency by optimizing the flow of fuel & air into the engine for various engine speeds. 5% Cylinder Deactivation saves fuel by deactivating cylinders when they are not needed. 7.5% Turbochargers & Superchargers increase engine power, allowing manufacturers to downsize engines without sacrificing performance or to increase performance without lowering fuel economy. 7.5% Integrated Starter/Generator (ISG) Systems automatically turn the engine on/off when the vehicle is stopped to reduce fuel consumed during idling. 8%

214

Hazardous Waste Minimum Distance Requirements (Connecticut) | Department of  

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

Minimum Distance Requirements (Connecticut) Minimum Distance Requirements (Connecticut) Hazardous Waste Minimum Distance Requirements (Connecticut) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection These regulations set minimum distance requirements between certain types of facilities that generate, process, store, and dispose of hazardous waste

215

Rules Establishing Minimum Standards Relating to Location, Design...  

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

Standards Relating to Location, Design, Construction, and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island) Rules Establishing Minimum Standards Relating to...

216

Microbial metatranscriptomics in a permanent marine oxygen minimum zone  

E-Print Network (OSTI)

Simultaneous characterization of taxonomic composition, metabolic gene content and gene expression in marine oxygen minimum zones (OMZs) has potential to broaden perspectives on the microbial and biogeochemical dynamics ...

Stewart, Frank J.

217

Study on optimal train movement for minimum energy consumption.  

E-Print Network (OSTI)

?? The presented thesis project is a study on train energy consumption calculation and optimal train driving strategies for minimum energy consumption. This study is… (more)

Gkortzas, Panagiotis

2013-01-01T23:59:59.000Z

218

Minimum Concave Cost Flow Over a Grid Network  

E-Print Network (OSTI)

Oct 12, 2012 ... Abstract The minimum concave cost network flow problem ... a grid network with a general nonnegative separable concave cost function.

219

Minimum cost subset selection with two competing agents  

E-Print Network (OSTI)

Nov 11, 2010 ... Minimum cost subset selection with two competing agents. Claudia Marini( nicosia ***at*** dia.uniroma3.it) Gaia Nicosia(nicosia ***at*** ...

220

Minimum cost subset selection with two competing agents  

E-Print Network (OSTI)

do not require qualified personnel, or when internal costs proportional to skills are incurred .... In conclusion, we tackle four different versions of the minimum cost ...

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Optimization Online - Guaranteed Minimum-Rank Solutions of ...  

E-Print Network (OSTI)

Jun 28, 2007 ... Guaranteed Minimum-Rank Solutions of Linear Matrix Equations via Nuclear Norm Minimization. Benjamin Recht(brecht ***at*** caltech.edu)

222

On the complexity of maximizing the minimum Shannon capacity in ...  

E-Print Network (OSTI)

Jan 18, 2010 ... On the complexity of maximizing the minimum Shannon capacity in wireless networks by joint channel assignment and power allocation.

223

International Comparison of Energy Efficiency Criteria and Test Procedures  

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

International Comparison of Energy Efficiency Criteria and Test Procedures International Comparison of Energy Efficiency Criteria and Test Procedures in Standards and Labeling Programs for Computer Monitors and Commercial Gas Stoves Title International Comparison of Energy Efficiency Criteria and Test Procedures in Standards and Labeling Programs for Computer Monitors and Commercial Gas Stoves Publication Type Report LBNL Report Number LBNL-6506E Year of Publication 2013 Authors Khanna, Nina, Nan Zhou, David Fridley, and John Romankiewicz Date Published 12/2013 Publisher Lawrence Berkeley National Laboratory Keywords Standards and labeling Abstract This report presents a technical review and comparative analysis of existing and/or proposed international mandatory energy performance standards, and voluntary and mandatory energy efficiency labels and test procedures for two products - computer monitors and commercial gas stoves - being considered for revised and new minimum energy performance standards (MEPS) in China. An overview of the scope of international programs, energy efficiency and other energy-related requirements, description and detailed summary table of criteria and procedures in major test standards are presented. In addition, an estimation of potential energy savings if China were to adopt revised MEPS comparable to international levels is provided for computer monitors. A proposed methodology for estimating potential energy savings based on the European Union experience is provided for commercial gas stoves in the absence of available sales or energy consumption data.

224

Consumer Life-Cycle Cost Impacts of Energy-Efficiency Standards...  

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

by increased standards. Relative to the existing minimum efficiency standard of 10 SEER, the results show that a majority of split system air conditioner and heat pump...

225

Teuchos C++ memory management classes, idioms, and related topics, the complete reference : a comprehensive strategy for safe and efficient memory management in C++ for high performance computing.  

SciTech Connect

The ubiquitous use of raw pointers in higher-level code is the primary cause of all memory usage problems and memory leaks in C++ programs. This paper describes what might be considered a radical approach to the problem which is to encapsulate the use of all raw pointers and all raw calls to new and delete in higher-level C++ code. Instead, a set of cooperating template classes developed in the Trilinos package Teuchos are used to encapsulate every use of raw C++ pointers in every use case where it appears in high-level code. Included in the set of memory management classes is the typical reference-counted smart pointer class similar to boost::shared ptr (and therefore C++0x std::shared ptr). However, what is missing in boost and the new standard library are non-reference counted classes for remaining use cases where raw C++ pointers would need to be used. These classes have a debug build mode where nearly all programmer errors are caught and gracefully reported at runtime. The default optimized build mode strips all runtime checks and allows the code to perform as efficiently as raw C++ pointers with reasonable usage. Also included is a novel approach for dealing with the circular references problem that imparts little extra overhead and is almost completely invisible to most of the code (unlike the boost and therefore C++0x approach). Rather than being a radical approach, encapsulating all raw C++ pointers is simply the logical progression of a trend in the C++ development and standards community that started with std::auto ptr and is continued (but not finished) with std::shared ptr in C++0x. Using the Teuchos reference-counted memory management classes allows one to remove unnecessary constraints in the use of objects by removing arbitrary lifetime ordering constraints which are a type of unnecessary coupling [23]. The code one writes with these classes will be more likely to be correct on first writing, will be less likely to contain silent (but deadly) memory usage errors, and will be much more robust to later refactoring and maintenance. The level of debug-mode runtime checking provided by the Teuchos memory management classes is stronger in many respects than what is provided by memory checking tools like Valgrind and Purify while being much less expensive. However, tools like Valgrind and Purify perform a number of types of checks (like usage of uninitialized memory) that makes these tools very valuable and therefore complement the Teuchos memory management debug-mode runtime checking. The Teuchos memory management classes and idioms largely address the technical issues in resolving the fragile built-in C++ memory management model (with the exception of circular references which has no easy solution but can be managed as discussed). All that remains is to teach these classes and idioms and expand their usage in C++ codes. The long-term viability of C++ as a usable and productive language depends on it. Otherwise, if C++ is no safer than C, then is the greater complexity of C++ worth what one gets as extra features? Given that C is smaller and easier to learn than C++ and since most programmers don't know object-orientation (or templates or X, Y, and Z features of C++) all that well anyway, then what really are most programmers getting extra out of C++ that would outweigh the extra complexity of C++ over C? C++ zealots will argue this point but the reality is that C++ popularity has peaked and is becoming less popular while the popularity of C has remained fairly stable over the last decade22. Idioms like are advocated in this paper can help to avert this trend but it will require wide community buy-in and a change in the way C++ is taught in order to have the greatest impact. To make these programs more secure, compiler vendors or static analysis tools (e.g. klocwork23) could implement a preprocessor-like language similar to OpenMP24 that would allow the programmer to declare (in comments) that certain blocks of code should be ''pointer-free'' or allow smaller blocks to be 'pointers allowed'. This would signific

Bartlett, Roscoe Ainsworth

2010-05-01T23:59:59.000Z

226

Energy Efficient Operation of Ammonia Refrigeration Systems  

SciTech Connect

Ammonia refrigeration systems typically offer many energy efficiency opportunities because of their size and complexity. This paper develops a model for simulating single-stage ammonia refrigeration systems, describes common energy saving opportunities, and uses the model to quantify those opportunities. The simulation model uses data that are typically available during site visits to ammonia refrigeration plants and can be calibrated to actual consumption and performance data if available. Annual electricity consumption for a base-case ammonia refrigeration system is simulated. The model is then used to quantify energy savings for six specific energy efficiency opportunities; reduce refrigeration load, increase suction pressure, employ dual suction, decrease minimum head pressure set-point, increase evaporative condenser capacity, and reclaim heat. Methods and considerations for achieving each saving opportunity are discussed. The model captures synergistic effects that result when more than one component or parameter is changed. This methodology represents an effective method to model and quantify common energy saving opportunities in ammonia refrigeration systems. The results indicate the range of savings that might be expected from common energy efficiency opportunities.

Mohammed, Abdul Qayyum [University of Dayton, Ohio; Wenning, Thomas J [ORNL; Sever, Franc [University of Dayton, Ohio; Kissock, Professor Kelly [University of Dayton, Ohio

2013-01-01T23:59:59.000Z

227

Energy Efficiency & Renewable Energy  

E-Print Network (OSTI)

of energy; · increase efficiency and productivity of the existing energy infrastructure; · bring clean lives of Americans by productively enhancing their energy choices and quality of life. Energy Efficiency Performance and Sustainable Buildings by 2015 Design all new Federal buildings which begin the planning

228

Electric motor systems in developing countries: Opportunities for efficiency improvement  

SciTech Connect

This report presents an overview of the current status and efficiency improvement potential of industrial motor systems in developing countries. Better management of electric motor systems is of particular relevance in developing countries, where improved efficiency can lead to increased productivity and slower growth in electricity demand. Motor systems currently consume some 65--80% of the industrial electricity in developing countries. Drawing on studies from Thailand, India, Brazil, China, Pakistan, and Costa Rica, we describe potential efficiency gains in various parts of the motor system, from the electricity delivery system through the motor to the point where useful work is performed. We report evidence of a significant electricity conservation potential. Most of the efficiency improvement methods we examine are very cost-effective from a societal viewpoint, but are generally not implemented due to various barriers that deter their adoption. Drawing on experiences in North America, we discuss a range of policies to overcome these barriers, including education, training, minimum efficiency standards, motor efficiency testing protocols, technical assistance programs, and financial incentives.

Meyers, S.; Monahan, P.; Lewis, P.; Greenberg, S. [Lawrence Berkeley Lab., CA (United States); Nadel, S. [American Council for an Energy-Efficient Economy, Washington, DC (United States)

1993-08-01T23:59:59.000Z

229

High-Throughput Proteomics Using High Efficiency Multiple-Capillary Liquid Chromatography With On-Line High-Performance ESI FTICR Mass Spectrometry  

Science Conference Proceedings (OSTI)

We report on the design and application of a high-efficiency multiple-capillary liquid chromatography (LC) system for high-throughput proteome analysis. The multiple-capillary LC system was operated at the pressure of 10,000 psi using commercial LC pumps to deliver the mobile phase and newly developed passive feedback valves to switch the mobile phase flow and introduce samples. The multiple-capillary LC system was composed of several serially connected dual-capillary column devices. The dual-capillary column approach was designed to eliminate the time delay for regeneration (or equilibrium) of the capillary column after its use under the mobile phase gradient condition (i.e. one capillary column was used in separation and the other was washed using mobile phase A). The serially connected dual-capillary columns and ESI sources were operated independently, and could be used for either''backup'' operation or with other mass spectrometer(s). This high-efficiency multiple-capillary LC system uses switching valves for all operations and is highly amenable to automation. The separations efficiency of dual-capillary column device, optimal capillary dimensions (column length and packed particle size), suitable mobile phases for electrospray, and the capillary re-generation were investigated. A high magnetic field (11.5 tesla) Fourier transform ion cyclotron resonance (FTICR) mass spectrometer was coupled on-line with this high-efficiency multiple-capillary LC system through an electrospray ionization source. The capillary LC provided a peak capacity of {approx}600, and the 2-D capillary LC-FTICR provided a combined resolving power of > 6 x 10 7 polypeptide isotopic distributions. For yeast cellular tryptic digests, > 100,000 polypeptides were typically detected, and {approx}1,000 proteins can be characterized in a single run.

Shen, Yufeng (BATTELLE (PACIFIC NW LAB)); Tolic, Nikola (BATTELLE (PACIFIC NW LAB)); Zhao, Rui (ASSOC WESTERN UNIVERSITY); Pasa Tolic, Ljiljana (BATTELLE (PACIFIC NW LAB)); Li, Lingjun (Illinois Univ Of-Urbana/Champa); Berger, Scott J. (ASSOC WESTERN UNIVERSITY); Harkewicz, Richard (BATTELLE (PACIFIC NW LAB)); Anderson, Gordon A. (BATTELLE (PACIFIC NW LAB)); Belov, Mikhail E. (BATTELLE (PACIFIC NW LAB)); Smith, Richard D. (BATTELLE (PACIFIC NW LAB))

2000-12-01T23:59:59.000Z

230

International Energy-Efficiency Standards  

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

5 5 International Energy-Efficiency Standards Two cost-effective approaches to reducing energy use in buildings are minimum energy standards for appliances and incorporating energy-efficiency principles in building codes. More than two dozen nations already have adopted, will soon adopt, or are considering the adoption of energy-efficiency standards and codes. The Environmental Energy Technologies Division has pooled its resources in the field of energy-efficiency standards with its international activities to create the International Building and Appliance Standards team. The IBAS team convenes regularly to discuss progress in existing international standards activities as well as to identify possible new Berkeley Lab opportunities to support efficiency standards the world over.

231

Short title: STOCHASTIC VARIATIONAL APPROACH TO MINIMUM UNCERTAINTY  

E-Print Network (OSTI)

We introduce a new variational characterization of Gaussian diffusion processes as minimum uncertainty states. We then define a variational method constrained by kinematics of diffusions and Schrödinger dynamics to seek states of local minimum uncertainty for general non-harmonic potentials. PACS numbers:03.65.-w, 03.65.Ca, 03.65.Bz 1.

Fabrizio Illuminati; Lorenza Viola

1995-01-01T23:59:59.000Z

232

Characterization of imaging phone cameras using minimum description length principle  

Science Conference Proceedings (OSTI)

In this paper, a new Minimum Description Length (MDL) approach for the characterization of a mobile phone's color camera is presented. The use of high-order polynomials, Fourier sine series, and artificial neural networks (ANN) for solving this problem ... Keywords: artificial neural network, high-order polynomial, imaging mobile phone, minimum description length

Adrian Burian; Aki Happonen; Mihaela Cirlugea

2008-04-01T23:59:59.000Z

233

Underwater vehicles: The minimum time problem Department of Mathematics  

E-Print Network (OSTI)

Underwater vehicles: The minimum time problem M. Chyba Department of Mathematics 2565 McCarthy Mall for a class of underwater vehicles. We focus on the situation of initial and final configurations at rest In this paper we pursue the analysis of the minimum time problem for a special class of underwater vehicles, see

Sontag, Eduardo

234

Underwater vehicles: The minimum time problem Department of Mathematics  

E-Print Network (OSTI)

Underwater vehicles: The minimum time problem M. Chyba Department of Mathematics 2565 McCarthy Mall for a class of underwater vehicles. We focus on the situation of initial and final configurations at rest the analysis of the minimum time problem for a special class of underwater vehicles, see [5], [6] for previous

Sussmann, Hector

235

Energy efficient all-to-all broadcast in all-wireless networks  

Science Conference Proceedings (OSTI)

All-to-all broadcast is a communication pattern in which every node initiates a broadcast. In this paper, we investigate the problem of building a unique cast tree of minimum total energy, which we call Minimum Unique Cast (MUC) tree, to be used for ... Keywords: All-to-all broadcast, Broadcast tree, Convergecast, Energy efficiency, Minimum power, Wireless network

Doina Bein; S. Q. Zheng

2010-05-01T23:59:59.000Z

236

A Boiler Plant Energy Efficiency and Load Balancing Survey  

E-Print Network (OSTI)

Daily energy use data was used to perform an energy efficiency survey of a medium-sized university boiler plant. The physical plant operates centralized mechanical plants to provide both chilled water and steam for building conditioning. Steam is used for heating buildings and to operate a 4000-ton steam-driven chiller. There are five natural gas-fired steam boilers that have rated capacities ranging from 40,000 lb/hr to 100,000 lb/hr at an operating pressure of 125 psig. This paper discusses the operating characteristics of the boiler and potential energy efficiency improvements. Results from the study included that reducing excess air levels to recommended minimums would save over $15,000 per year.

Nutter, D. W.; Murphy, D. R.

1997-04-01T23:59:59.000Z

237

Building Energy Efficiency Standards in Hong Kong and Mainland China  

E-Print Network (OSTI)

This paper investigates building energy efficiency standards in Hong Kong and mainland China. Building energy regulations are placed in the context of broad trends in energy supply and demand, and of energy policy. The paper offers an overview of the requirements of specific energy-efficiency laws and codes for buildings, and discusses how these requirements affect building design. While its fundamental economic policy approach emphasizes free markets and minimum government intervention, Hong Kong has developed building energy codes for commercial and other buildings largely in response to the energy and environmental concerns. Mandatory code for building envelope was enforced since 1995; energy codes for building services were developed and implemented on a voluntary basis in recent years. Performance-based compliance options and better integration of the codes are needed for future development.

Sam C. M. Hui; Grove California

2000-01-01T23:59:59.000Z

238

A Balloon-Borne Continuous Cloud Particle Replicator for Measuring Vertical Profiles of Cloud Microphysical Properties: Instrument Design, Performance, and Collection Efficiency Analysis  

Science Conference Proceedings (OSTI)

The performance of a balloon-borne Formvar replicator that measures continuous profiles of cloud microphysical properties is investigated. The replicator measures the small particles (<100-?m diameter) that are undetectable or poorly resolved by ...

Larry M. Miloshevich; Andrew J. Heymsfield

1997-08-01T23:59:59.000Z

239

efficiency | OpenEI  

Open Energy Info (EERE)

efficiency efficiency Dataset Summary Description View 2010 energy efficiency data from AeroSys Inc, Coaire, Cold Point, First Operations, LG Electronics, Nordyne, and Quietside manufacturers. Data includes cooling capacity, cooling performance, heating capacity, and heating performance. Spreadsheet was created by combining the tables in pdf files that are included in the zip file. Source Energy Applicance Data - United States Federal Trade Commission, www.ftc.gov Date Released Unknown Date Updated Unknown Keywords air conditioner central air conditioner efficiency efficient energy heat pump Data application/vnd.ms-excel icon 2010_CentralAC_All.xls (xls, 82.4 KiB) application/zip icon 2010CentralAirConditioner.zip (zip, 398.2 KiB) Quality Metrics Level of Review Some Review

240

efficient | OpenEI  

Open Energy Info (EERE)

efficient efficient Dataset Summary Description View 2010 energy efficiency data from AeroSys Inc, Coaire, Cold Point, First Operations, LG Electronics, Nordyne, and Quietside manufacturers. Data includes cooling capacity, cooling performance, heating capacity, and heating performance. Spreadsheet was created by combining the tables in pdf files that are included in the zip file. Source Energy Applicance Data - United States Federal Trade Commission, www.ftc.gov Date Released Unknown Date Updated Unknown Keywords air conditioner central air conditioner efficiency efficient energy heat pump Data application/vnd.ms-excel icon 2010_CentralAC_All.xls (xls, 82.4 KiB) application/zip icon 2010CentralAirConditioner.zip (zip, 398.2 KiB) Quality Metrics Level of Review Some Review

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Extending Efficiency Services to Underserved Households: NYSERDA...  

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

Extending Efficiency Services to Underserved Households: NYSERDA's Assisted Home Performance with ENERGY STAR Program Title Extending Efficiency Services to Underserved Households:...

242

On the minimum temperature of the quiet solar chromosphere  

E-Print Network (OSTI)

aims: We aim to provide an estimate of the minimum temperature of the quiet solar chromosphere. methods: We perform a 2D radiation-MHD simulation spanning the upper convection zone to the lower corona. The simulation includes non-LTE radiative transfer and {an equation-of-state that includes non-equilibrium ionization of hydrogen and non-equilibrium H_2 molecule formation}. We analyze the reliability of the various assumptions made in our model in order to assess the realism of the simulation. results: Our simulation contains pockets of cool gas with down to 1660 K from 1 Mm up to 3.2 Mm height. It overestimates the radiative heating, and contains non-physical heating below 1660 K. Therefore we conclude that cool pockets in the quiet solar chromosphere might have even lower temperatures than in the simulation, provided that there exist areas in the chromosphere without significant magnetic heating. We suggest off-limb molecular spectroscopy to look for such cool pockets and 3D simulations including a local dy...

Leenaarts, Jorrit; Hansteen, Viggo; Gudiksen, Boris V

2011-01-01T23:59:59.000Z

243

Rules Establishing Minimum Standards Relating to Location, Design,  

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

Rules Establishing Minimum Standards Relating to Location, Design, Rules Establishing Minimum Standards Relating to Location, Design, Construction, and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island) Rules Establishing Minimum Standards Relating to Location, Design, Construction, and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Rhode Island Program Type Environmental Regulations

244

Energy Efficient  

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

www.efficientwindows.org July 2011 E nergy-efficient windows save heating and cooling energy and improve occupant comfort while allowing for downsized HVAC equipment....

245

Polynomial Time Algorithms for Minimum Energy Scheduling  

E-Print Network (OSTI)

The aim of power management policies is to reduce the amount of energy consumed by computer systems while maintaining satisfactory level of performance. One common method for saving energy is to simply suspend the system during the idle times. No energy is consumed in the suspend mode. However, the process of waking up the system itself requires a certain fixed amount of energy, and thus suspending the system is beneficial only if the idle time is long enough to compensate for this additional energy expenditure. In the specific problem studied in the paper, we have a set of jobs with release times and deadlines that need to be executed on a single processor. Preemptions are allowed. The processor requires energy L to be woken up and, when it is on, it uses one unit of energy per one unit of time. It has been an open problem whether a schedule minimizing the overall energy consumption can be computed in polynomial time. We solve this problem in positive, by providing an O(n^5)-time algorithm. In addition we pr...

Baptiste, Philippe; Durr, Christoph

2009-01-01T23:59:59.000Z

246

Assessment of Electrical, Efficiency, and Photometric Performance of Advanced Lighting Technologies: Dimmable Advanced Lighting Tech nologies -- Electronic Fluorescent, High-Intensity Discharge, and Light-Emitting Diode  

Science Conference Proceedings (OSTI)

This EPRI Technical Report is a compilation of four technical updates that address the basic dimming performance of advanced lighting sources: EPRI report 1018476 for linear fluorescent ballasts, 1018477 for hot and cold cathode compact fluorescent lamps, 1018479 for electronic high-intensity discharge (HID) ballasts, and 1018480 for light-emitting diode (LED) lighting. Chapter 1 provides a discussion of basic lighting control, the importance of considering power quality in lighting control, lighting con...

2008-12-22T23:59:59.000Z

247

Assessment of Electrical, Efficiency, and Photometric Performance of Advanced Lighting Sources: Dimmable Advanced Lighting Technolog ies -- Electronic High-Intensity Discharge Ballasts  

Science Conference Proceedings (OSTI)

This EPRI Technical Update addresses the dimming performance of electronic high-intensity discharge (HID) ballasts. Chapter 1 provides a discussion of basic lighting control, the importance of considering power quality in lighting control, lighting control methods and parameters, and the advantages and future of lighting control. Chapter 2 addresses in more depth the dimming methods used in advanced lighting sources and controls for incandescent, fluorescent, high-intensity discharge (HID) and light-emit...

2008-12-18T23:59:59.000Z

248

Assessment of Electrical, Efficiency, and Photometric Performance of Advanced Lighting Sources: Dimmable Advanced Lighting Technolog ies -- Electronic (Hot and Cold Cathode) Compact Fluorescent Lamps and Ballasts  

Science Conference Proceedings (OSTI)

This EPRI Technical Update (EPRI report 1018477) is one of four in a series that addresses basic dimming performance of advanced lighting sourceselectronic (hot and cold cathode) compact fluorescent lamps and ballasts Chapter 1 discusses basic lighting control, the importance of considering power quality in lighting control, lighting control methods and parameters, and the advantages and future of lighting control. Chapter 2 addresses in more depth dimming methods used in advanced lighting sources and co...

2008-12-19T23:59:59.000Z

249

Assessment of Electrical, Efficiency, and Photometric Performance of Advanced Lighting Sources: Dimmable Advanced Lighting Technolog ies -- Electronic Light-Emitting Diode (LED) Fixtures, Lamps, and Drivers  

Science Conference Proceedings (OSTI)

This EPRI Technical Update addresses the dimming performance of light-emitting diode (LED) lighting. Chapter 1 provides a discussion of basic lighting control, the importance of considering power quality in lighting control, lighting control methods and parameters, and the advantages and future of lighting control. Chapter 2 addresses in more depth the dimming methods used in advanced lighting sources and controls for incandescent, fluorescent, high-intensity discharge (HID) and LED sources. Chapter 3 ad...

2008-12-19T23:59:59.000Z

250

Trends of Maximum and Minimum Temperatures in Northern South America  

Science Conference Proceedings (OSTI)

This paper presents the results of testing the homogeneity of the basic data used in this study, that is, the mean monthly maximum and minimum temperature (as derived from daily observations) of several long-term climatological stations of ...

Ramon A. Quintana-Gomez

1999-07-01T23:59:59.000Z

251

Theory and Applications of the Minimum Spanning Tree Rank Histogram  

Science Conference Proceedings (OSTI)

A minimum spanning tree (MST) rank histogram (RH) is a multidimensional ensemble reliability verification tool. The construction of debiased, decorrelated, and covariance-homogenized MST RHs is described. Experiments using Euclidean L2, variance, ...

Daniel Gombos; James A. Hansen; Jun Du; Jeff McQueen

2007-04-01T23:59:59.000Z

252

Minimum Wage Effects Across State Borders: Estimates Using Contiguous Counties  

E-Print Network (OSTI)

on earnings and employment in restaurants and other low-wageOur primary focus is on restaurants, since they are the mostof minimum wages on restaurant earnings, but the local

Dube, Andrajit; Lester, T. William; Reich, Michael

2010-01-01T23:59:59.000Z

253

Minimum Stream Flow and Water Sale Contracts (Indiana)  

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

The commission may provide certain minimum quantities of stream flow or sell water on a unit pricing basis for water supply purposes from the water supply storage in reservoir impoundments or parts...

254

Minimum Purchase Price Regulations (Prince Edward Island, Canada)  

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

The Minimum Purchase Price Regulations establish the price which utilities must pay for power produced by large-scale renewable energy generators – that is those capable of producing more than 100...

255

What Solar Oscillation Tell us About the Solar Minimum  

E-Print Network (OSTI)

The availability of continuous helioseismic data for two consecutive solar minima has provided a unique opportunity to study the changes in the solar interior that might have led to this unusual minimum. We present preliminary analysis of inter mediate-degree mode frequencies in the 3 mHz band during the current period of minimal solar activity and show that the mode frequencies are significantly lower than those during the previous activity minimum. Our analysis do not show any signature of the beginning of cycle 24 till the end of 2008. In addition, the zonal and meridional flow patterns inferred from inverting frequencies also hint for a delayed onset of a new cycle. The estimates of travel time are higher than the previous minimum confirming a relatively weak solar activity during the current minimum.

Jain, Kiran; Burtseva, O; Hernandez, I Gonzalez; Hill, F; Howe, R; Kholikov, S; Komm, R; Leibacher, J

2010-01-01T23:59:59.000Z

256

Selection of minimum earthquake intensity in calculating pipe failure probabilities  

SciTech Connect

In a piping reliability analysis, it is sometimes necessary to specify a minimum ground motion intensity, usually the peak acceleration, below which the ground motions are not considered as earthquakes and, hence, are neglected. The calculated probability of failure of a piping system is dependent on this selected minimum earthquake intensity chosen for the analysis. A study was conducted to determine the effects of the minimum earthquake intensity on the probability of pipe failure. The results indicated that the probability of failure of the piping system is not very sensitive to the variations of the selected minimum peak ground acceleration. However, it does have significant effects on various scenarios that make up the system failure.

Lo, T.Y.

1985-01-01T23:59:59.000Z

257

Do We Know of Any Maunder Minimum Stars?  

E-Print Network (OSTI)

Most stars previously identified as Maunder minimum stars are old stars evolved off of the main sequence. Analysis of activity measurements from the California and Carnegie Planet Search program stars and Hipparcos parallaxes implies that the canonical age-chromospheric activity relation breaks down for stars older than $\\sim 6$ Gyr when activity is calculated from Mount Wilson S values. Stars only 1 magnitude above the main sequence exhibit significantly suppressed activity levels which have been mistaken for examples of Maunder minimum behavior.

Jason T. Wright

2004-06-15T23:59:59.000Z

258

Propeller performance analysis using lifting line theory  

E-Print Network (OSTI)

Propellers are typically optimized to provide the maximum thrust for the minimum torque at a specific number of revolutions per minute (RPM) at a particular ship speed. This process allows ships to efficiently travel at ...

Flood, Kevin M. (Kevin Michael)

2009-01-01T23:59:59.000Z

259

Efficient independent component analysis  

E-Print Network (OSTI)

Independent component analysis (ICA) has been widely used for blind source separation in many fields such as brain imaging analysis, signal processing and telecommunication. Many statistical techniques based on M-estimates have been proposed for estimating the mixing matrix. Recently several nonparametric methods have been developed but in-depth analysis on asymptotic efficiency has not been available. We analyze ICA using semiparametric theories and propose a straightforward estimate based on the efficient score function by using B-spline approximations. The estimate is asymptotically efficient under moderate conditions and exhibits better performance than standard ICA methods in a variety of simulations.

Chen, Aiyou

2006-01-01T23:59:59.000Z

260

Reliable and efficient reprogramming in sensor networks  

Science Conference Proceedings (OSTI)

Retasking and remote programming of sensor networks is an essential functionality to make these networks practical and effective. As the availability of more capable sensor nodes increases and new functional implementations continue to be proposed, these ... Keywords: Broadcast, energy efficiency, minimum energy broadcast, reliable distribution, reprogramming, retasking, sensor networks

Chris Miller; Christian Poellabauer

2010-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Evaluation of the Hydraulic Performance and Mass Transfer Efficiency of the CSSX Process with the Optimized Solvent in a Single Stage of 5.5-Cm Diameter Centrifugal Contactor  

Science Conference Proceedings (OSTI)

The Caustic-Side Solvent Extraction (CSSX) process has been selected for the separation of cesium from Savannah River Site high-level waste. The solvent composition used in the CSSX process was recently optimized so that the solvent is no longer supersaturated with respect to the calixarene crown ether extractant. Hydraulic performance and mass transfer efficiency testing of a single stage of 5.5-cm ORNL-designed centrifugal contactor has been performed for the CSSX process with the optimized solvent. Maximum throughputs of the 5.5-cm centrifugal contactor, as a function of contactor rotor speed, have been measured for the extraction, scrub, strip, and wash sections of the CSSX flowsheet at the baseline organic/aqueous flow ratios (O/A) of the process, as well as at O/A's 20% higher and 20% lower than the baseline. Maximum throughputs are comparable to the design throughput of the contactor, as well as with throughputs obtained previously in a 5-cm centrifugal contactor with the non-optimized CSSX solvent formulation. The 20% variation in O/A had minimal effect on contactor throughput. Additionally, mass transfer efficiencies have been determined for the extraction and strip sections of the flowsheet. Efficiencies were lower than the process goal of greater than or equal to 80%, ranging from 72 to 75% for the extraction section and from 36 to 60% in the strip section. Increasing the mixing intensity and/or the solution level in the mixing zone of the centrifugal contactor (residence time) could potentially increase efficiencies. Several methods are available to accomplish this including (1) increasing the size of the opening in the bottom of the rotor, resulting in a contactor which is partially pumping instead of fully pumping, (2) decreasing the number of vanes in the contactor, (3) increasing the vane height, or (4) adding vanes on the rotor and baffles on the housing of the contactor. The low efficiency results obtained stress the importance of proper design of a centrifugal contactor for use in the CSSX process. A prototype of any centrifugal contactors designed for future pilot-scale or full-scale processing should be thoroughly tested prior to implementation.

Law, J.D.; Tillotson, R.D.; Todd, T.A.

2002-09-19T23:59:59.000Z

262

Efficient thermal management for multiprocessor systems  

E-Print Network (OSTI)

2.2.4 Thermal Modeling . . . . . . . .63 Table 4.3: Thermal Hot Spots . . . . . . . . . . . . . .Performance-Efficient Thermal Management . . . . . . . . . .

Co?kun, Ay?e K?v?lc?m

2009-01-01T23:59:59.000Z

263

International Cooperation on Advancing Equipment and Appliance Efficiency  

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

Equipment and Equipment and Appliance Efficiency The Superefficient Equipment and Appliance Deployment (SEAD) Initiative 1 What is SEAD? * SEAD is a global market transformation initiative for deploying super-efficient equipment and appliances. * SEAD has three goals: - To raise the efficiency ceiling * Pull super-efficient appliances and equipment into the market through cooperation on measures like incentives, procurement, awards, and R&D investments - To raise the efficiency floor * Work together to bolster national or regional policies like minimum efficiency standards - To strengthen the foundations of efficiency programs * Coordinate technical work to support these activities 2 SEAD Partners Australia European Commission Canada France Germany India Japan Korea Mexico

264

Implementing and Sustaining Operator Led Energy Efficiency Improvements  

E-Print Network (OSTI)

The continuing high price of energy, difficult trading conditions and corporate commitments to meet emissions targets means that industry faces tough challenges to improve energy efficiency and reduce operating costs. The challenge is how to maximize energy savings with optimal capital investment. During the past few years, many operating companies have made good strides towards improving the energy performance of their assets by implementing energy efficiency programs. In general, these programs and initiatives have focused on relatively easy 'low hanging fruit' energy efficiency improvements - such as reducing furnace O2 levels and implementing steam trap maintenance programs. These initiatives are an important first step. However, to significantly reduce energy consumption, the site must focus on a strategic approach which involves developing, implementing and sustaining a client specific program of energy optimization. We discuss ways of sustaining energy performance through operator led initiatives as part of the structured KBC energy management process, ENgage. We present case studies from the oil refining industry, demonstrating energy savings of up to 20 percent, in which capital expenditure were kept to the bare minimum.

Hoyle, A.; Knight, N.; Rutkowski, M.

2011-01-01T23:59:59.000Z

265

THE TURBULENT CASCADE AND PROTON HEATING IN THE SOLAR WIND DURING SOLAR MINIMUM  

Science Conference Proceedings (OSTI)

The recently protracted solar minimum provided years of interplanetary data that were largely absent in any association with observed large-scale transient behavior on the Sun. With large-scale shear at 1 AU generally isolated to corotating interaction regions, it is reasonable to ask whether the solar wind is significantly turbulent at this time. We perform a series of third-moment analyses using data from the Advanced Composition Explorer. We show that the solar wind at 1 AU is just as turbulent as at any other time in the solar cycle. Specifically, the turbulent cascade of energy scales in the same manner proportional to the product of wind speed and temperature. Energy cascade rates during solar minimum average a factor of 2-4 higher than during solar maximum, but we contend that this is likely the result of having a different admixture of high-latitude sources.

Coburn, Jesse T.; Smith, Charles W.; Vasquez, Bernard J. [Physics Department and Space Science Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH (United States); Stawarz, Joshua E. [Department of Astrophysical and Planetary Sciences, University of Colorado at Boulder, Boulder, CA (United States); Forman, Miriam A., E-mail: jtu46@wildcats.unh.edu, E-mail: Charles.Smith@unh.edu, E-mail: Bernie.Vasquez@unh.edu, E-mail: Joshua.Stawarz@Colorado.edu, E-mail: Miriam.Forman@sunysb.edu [Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, NY (United States)

2012-08-01T23:59:59.000Z

266

Minimum Stream Flow Standards (Connecticut) | Department of Energy  

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

Minimum Stream Flow Standards (Connecticut) Minimum Stream Flow Standards (Connecticut) Minimum Stream Flow Standards (Connecticut) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Water Buying & Making Electricity Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection These regulations apply to all dams and structures which impound or divert waters on rivers or their tributaries, with some exceptions. The

267

Energy efficiency standards for residential and commercial equipment: Additional opportunities  

SciTech Connect

Energy efficiency standards set minimum levels of energy efficiency that must be met by new products. Depending on the dynamics of the market and the level of the standard, the effect on the market for a given product may be small, moderate, or large. Energy efficiency standards address a number of market failures that exist in the buildings sector. Decisions about efficiency levels often are made by people who will not be responsible for the energy bill, such as landlords or developers of commercial buildings. Many buildings are occupied for their entire lives by very temporary owners or renters, each unwilling to make long-term investments that would mostly reward subsequent users. And sometimes what looks like apathy about efficiency merely reflects inadequate information or time invested to evaluate it. In addition to these sector-specific market failures, energy efficiency standards address the endemic failure of energy prices to incorporate externalities. In the U.S., energy efficiency standards for consumer products were first implemented in California in 1977. National standards became effective starting in 1988. By the end of 2001, national standards were in effect for over a dozen residential appliances, as well as for a number of commercial sector products. Updated standards will take effect in the next few years for several products. Outside the U.S., over 30 countries have adopted minimum energy performance standards. Technologies and markets are dynamic, and additional opportunities to improve energy efficiency exist. There are two main avenues for extending energy efficiency standards. One is upgrading standards that already exist for specific products. The other is adopting standards for products that are not covered by existing standards. In the absence of new and upgraded energy efficiency standards, it is likely that many new products will enter the stock with lower levels of energy efficiency than would otherwise be the case. Once in the stock, it is either impossible or more costly to improve the energy efficiency. Therefore, by not expanding or upgrading energy efficiency standards, opportunities for saving energy would be lost. In the past two decades, standards have significantly raised the level of energy efficiency for new products. How much more might be gained by making standards more stringent on products already subject to them, or by extending standards to products not yet covered? The main goal of this study is to estimate key national impacts of new and upgraded energy efficiency standards for residential and commercial equipment. These impacts approximate the opportunity for national benefits that may be lost if standards are not upgraded and expanded from current levels. This study also identifies the end uses where the largest opportunities exist. This analysis was prepared for the National Commission on Energy Policy (NCEP). It uses an analytical approach that is similar in concept to that used by the U.S. Department of Energy (DOE) to set standard levels. It relies on much less data and uses more simplified assumptions than the detailed and complex formulations used in DOE's standard-setting process. The results of this analysis should thus be viewed as a first approximation of the impacts that would actually be achieved by new standards. All monetary values in this report are in 2002 dollars.

Rosenquist, Greg; McNeil, Michael; Iyer, Maithili; Meyers, Steve; McMahon, Jim

2004-08-02T23:59:59.000Z

268

Energy efficiency standards for residential and commercial equipment: Additional opportunities  

SciTech Connect

Energy efficiency standards set minimum levels of energy efficiency that must be met by new products. Depending on the dynamics of the market and the level of the standard, the effect on the market for a given product may be small, moderate, or large. Energy efficiency standards address a number of market failures that exist in the buildings sector. Decisions about efficiency levels often are made by people who will not be responsible for the energy bill, such as landlords or developers of commercial buildings. Many buildings are occupied for their entire lives by very temporary owners or renters, each unwilling to make long-term investments that would mostly reward subsequent users. And sometimes what looks like apathy about efficiency merely reflects inadequate information or time invested to evaluate it. In addition to these sector-specific market failures, energy efficiency standards address the endemic failure of energy prices to incorporate externalities. In the U.S., energy efficiency standards for consumer products were first implemented in California in 1977. National standards became effective starting in 1988. By the end of 2001, national standards were in effect for over a dozen residential appliances, as well as for a number of commercial sector products. Updated standards will take effect in the next few years for several products. Outside the U.S., over 30 countries have adopted minimum energy performance standards. Technologies and markets are dynamic, and additional opportunities to improve energy efficiency exist. There are two main avenues for extending energy efficiency standards. One is upgrading standards that already exist for specific products. The other is adopting standards for products that are not covered by existing standards. In the absence of new and upgraded energy efficiency standards, it is likely that many new products will enter the stock with lower levels of energy efficiency than would otherwise be the case. Once in the stock, it is either impossible or more costly to improve the energy efficiency. Therefore, by not expanding or upgrading energy efficiency standards, opportunities for saving energy would be lost. In the past two decades, standards have significantly raised the level of energy efficiency for new products. How much more might be gained by making standards more stringent on products already subject to them, or by extending standards to products not yet covered? The main goal of this study is to estimate key national impacts of new and upgraded energy efficiency standards for residential and commercial equipment. These impacts approximate the opportunity for national benefits that may be lost if standards are not upgraded and expanded from current levels. This study also identifies the end uses where the largest opportunities exist. This analysis was prepared for the National Commission on Energy Policy (NCEP). It uses an analytical approach that is similar in concept to that used by the U.S. Department of Energy (DOE) to set standard levels. It relies on much less data and uses more simplified assumptions than the detailed and complex formulations used in DOE's standard-setting process. The results of this analysis should thus be viewed as a first approximation of the impacts that would actually be achieved by new standards. All monetary values in this report are in 2002 dollars.

Rosenquist, Greg; McNeil, Michael; Iyer, Maithili; Meyers, Steve; McMahon, Jim

2004-08-02T23:59:59.000Z

269

ATLAS measurements of minimum bias and soft QCD  

Science Conference Proceedings (OSTI)

The first measurements of charged particle production in proton?proton collisions at center?of?mass energy s ?=?900? GeV and 7 TeV recorded with the ATLAS detector at the LHC are presented. Minimum bias distributions are measured for events with at least one charged particle in the kinematic range |?| 500? MeV and compared with the predictions from various Monte Carlo models. Activity in the underlying event was measured with respect to the highest p T track in the event. Both the minimum bias and underlying event measurements are fully corrected for detector effects to obtain distributions at the hadron level.

Maaike Limper; The ATLAS collaboration

2010-01-01T23:59:59.000Z

270

(Energy Efficiency)  

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

DECLARATION DECLARATION INTERNATIONAL PARTNERSHIP FOR ENERGY EFFICIENCY COOPERATION [IPEEC] Considering: Declarations of the Gleneagles, St. Petersburg and Heiligendamm Summits, which emphasize the need for global cooperation in the field of energy efficiency. Recognizing: 1. that improving energy saving and energy efficiency is one of the quickest, greenest, and most cost-effective way to address energy security, climate change, and ensuring economic growth; 2. that a comprehensive process has been launched to enable the full, effective and sustained implementation of the UNFCCC through long-term cooperative action, now, up to and beyond 2012, in order to reach an agreed outcome and adopt a decision at the COP 15. 3. that all countries, both developed and developing, share common interests for improving their

271

Compliance of clinical trial registries with the World Health Organization minimum data set: a survey  

E-Print Network (OSTI)

Organization minimum data set: a survey Lorenzo P Moja* 1 ,of the WHO minimum data set. Methods: A retrospectivethe launch of the WHO minimum data set seemed to positively

2009-01-01T23:59:59.000Z

272

Efficient Data Transfer Protocols  

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

Efficient Efficient Data Transfer Protocols for Big Data Brian Tierney ∗ , Ezra Kissel † , Martin Swany † , Eric Pouyoul ∗ ∗ Lawrence Berkeley National Laboratory, Berkeley, CA 94270 † School of Informatics and Computing, Indiana University, Bloomington, IN 47405 Abstract-Data set sizes are growing exponentially, so it is important to use data movement protocols that are the most efficient available. Most data movement tools today rely on TCP over sockets, which limits flows to around 20Gbps on today's hardware. RDMA over Converged Ethernet (RoCE) is a promising new technology for high-performance network data movement with minimal CPU impact over circuit-based infrastructures. We compare the performance of TCP, UDP, UDT, and RoCE over high latency 10Gbps and 40Gbps network paths, and show that RoCE-based data transfers can fill a 40Gbps path using much less CPU than other protocols.

273

Performance House -- A Cold Climate Challenge Home  

SciTech Connect

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

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

2013-08-01T23:59:59.000Z

274

Efficient reasoning  

Science Conference Proceedings (OSTI)

Many tasks require “reasoning”—i.e., deriving conclusions from a corpus of explicitly stored information—to solve their range of problems. An ideal reasoning system would produce all-and-only the correct answers ... Keywords: efficiency trade-offs, soundness/completeness/expressibility

Russell Greiner; Christian Darken; N. Iwan Santoso

2001-03-01T23:59:59.000Z

275

Recent State Minimum Temperature Records in the Midwest  

Science Conference Proceedings (OSTI)

State minimum temperature records were set or tied in Indiana (?37.8°C) and Kentucky (?38.3°C) in January 1994, and in Illinois (?37.2°C), Iowa (?43.9°C), Minnesota (?51.1°C), and Wisconsin (?48.3°C) in February 1996. The veracity of these ...

Thomas W. Schmidlin

1997-01-01T23:59:59.000Z

276

Minimum-outage broadcast in wireless networks with fading channels  

Science Conference Proceedings (OSTI)

We consider the problem of cooperative broadcasting for minimum outage in wireless networks. We consider wireless multihop broadcast as a set of transmitters that transmit in a certain order. The receiving nodes are able to combine all the previous transmissions ... Keywords: broadcast, multicast, outage, wireless networks

Tolga Girici; Gulizar Duygu Kurt

2010-07-01T23:59:59.000Z

277

Power Allocations in Minimum-Energy SER Constrained Cooperative Networks  

E-Print Network (OSTI)

1 Power Allocations in Minimum-Energy SER Constrained Cooperative Networks Behrouz Maham-Spring). Behrouz Maham and Are Hjørungnes are with UNIK ­ University Graduate Center, University of Oslo, Norway. Behrouz Maham is currently a visiting scholar at Department of Electrical Engineering, Stanford

Paris-Sud XI, Université de

278

CONSTRAINED MINIMUM ENTROPY AND MAXIMUM NEGENTROPY BLIND DECONVOLUTION AND EQUALIZATION  

E-Print Network (OSTI)

CONSTRAINED MINIMUM ENTROPY AND MAXIMUM NEGENTROPY BLIND DECONVOLUTION AND EQUALIZATION Seungjin on the variance of decon­ volved signal. We also consider the maximum negen­ tropy principle and show that the CME version, without any prior knowledge (such as channel impulse response, training data). As the demand

Choi, Seungjin

279

A faster distributed protocol for constructing a minimum spanning tree  

Science Conference Proceedings (OSTI)

This paper studies the problem of constructing a minimum-weight spanning tree (MST) in a distributed network. This is one of the most important problems in the area of distributed computing. There is a long line of gradually improving protocols ...

Michael Elkin

2004-01-01T23:59:59.000Z

280

Minimum cost multiple multicast network coding with quantized rates  

Science Conference Proceedings (OSTI)

In this paper, we consider multiple multicast sessions with intra-session network coding where rates over all links are integer multiples of a basic rate. Although having quantized rates over communication links is quite common, conventional minimum ... Keywords: Decomposition algorithm, Multicast networks, Network coding

M. A. Raayatpanah; H. Salehi Fathabadi; B. H. Khalaj; S. Khodayifar

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Minimum-mirror-area single-stage solar concentrators  

SciTech Connect

A means of generating a comcentrating mirror of minimum size for a given average flux-concentration output is outlined. The method is useful for acceptance angles typical of those required for tilting and tracking solar concentrators and can result in substantial cost savings when expensive mirrors (i.e.,glass) are used. Comparisons are made with compound parabolic concentrators.

Mills, D.; Harting, E.; Giutronich, J.E.; Cellich, W.; Morton, A.; Walker, I.

1980-12-01T23:59:59.000Z

282

THE SOLAR CYCLE AT THE MAUNDER MINIMUM EPOCH  

E-Print Network (OSTI)

THE SOLAR CYCLE AT THE MAUNDER MINIMUM EPOCH HIROKO MIYAHARA, DMITRY SOKOLOFF and ILYA G. USOSKIN Solar-Terrestrial Environmental Laboratory, Nagoya University Nagoya, Aichi 464-8601, Japan Department minima, when the solar dynamo was in a special mode. We review available sets of direct and indirect data

Usoskin, Ilya G.

283

Optimization of distribution transformer efficiency characteristics. Final report  

SciTech Connect

A method for distribution transformer loss evaluation was derived. The total levelized annual cost method was used and was extended to account properly for conditions of energy cost inflation, peak load growth, and transformer changeout during the evaluation period. The loss costs included were the no-load and load power losses, no-load and load reactive losses, and the energy cost of regulation. The demand and energy components of loss costs were treated separately to account correctly for the diversity of load losses and energy cost inflation. An analysis was performed to find what level of transformer loss yields the minimum total levelized annual cost for a given kVA rating and a given set of load and cost parameters. Initial transformer costs as a function of no-load loss, load loss, and kVA were generated and used in the evaluation. Both single and multiple efficiency designs were considered. The total levelized annual costs of the two designs were compared. In each case the multiple efficiency design was less costly. A sensitivity analysis was performed to find the change in total levelized annual cost due to changes in the input parameters. Also, an analysis was conducted to determine the amount of energy required to produce the materials for distribution transformers. It was determined that the energy content of the extra materials used to produce a higher efficiency transformer was less than the amount of energy saved in operating costs. Therefore, from a total energy standpoint, it is worth using the extra energy to manufacture a more efficient transformer. Recommendations for distribution transformer efficiency characteristics and recommendations for further investigation are included. (LCL)

Braunstein, H.

1979-12-04T23:59:59.000Z

284

Energy-Efficient Networking Energy-Aware Routing Protocol  

E-Print Network (OSTI)

from to a physical server in another DC, when, the second DC has access to the renewable energy sourcesEnergy-Efficient Networking Energy-Aware Routing Protocol Minimum Power Topology Energy-Aware Admission Control Management of Resources in the Liquid Network Summary Energy Efficient Protocols in Self

Tobagi, Fouad

285

Energy Efficiency Building Code for Commercial Buildings in Sri Lanka  

SciTech Connect

1.1.1 To encourage energy efficient design or retrofit of commercial buildings so that they may be constructed, operated, and maintained in a manner that reduces the use of energy without constraining the building function, the comfort, health, or the productivity of the occupants and with appropriate regard for economic considerations. 1.1.2 To provide criterion and minimum standards for energy efficiency in the design or retrofit of commercial buildings and provide methods for determining compliance with them. 1.1.3 To encourage energy efficient designs that exceed these criterion and minimum standards.

Busch, John; Greenberg, Steve; Rubinstein, Francis; Denver, Andrea; Rawner, Esther; Franconi, Ellen; Huang, Joe; Neils, Danielle

2000-09-30T23:59:59.000Z

286

High Performance Magnets for Energy Efficient Devices  

Science Conference Proceedings (OSTI)

Bonded Magnetocaloric Powders for the Refrigeration Application · Coercivity ... Industrial Needs and Applications for Soft Magnetic Materials · Industrial ...

287

Annual Performance Report -2011 Water Use Efficiency  

E-Print Network (OSTI)

,802,005Total Water Produced and Purchased (TP) ­ Annual Volume Distribution System Leakage Summary: Note the reporting period listed above, WSU total water produced was 465.8 million gallons which is 106.5 million, service meters recorded 123.3 MilGal of water usage, which accounts for 26.5% of water produced

Collins, Gary S.

288

Efficiency United (Gas) - Home Performance Program (Michigan...  

Open Energy Info (EERE)

Air sealing, Equipment Insulation, Furnaces, Programmable Thermostats, Water Heaters, Windows, Energy Audit, Shower Head, Faucet Aerator, Pipe Wrap Active Incentive No...

289

Guide to efficient unitary cooling equipment  

SciTech Connect

The universe of unitary cooling equipment is a large one; these systems are used in nearly forty percent of the residential and commercial buildings in the United States. Unitary cooling equipment is made up of off-the-shelf units: factory-assembled single or split systems, including air-source heat pumps and air conditioners. The efficiency of this class of cooling equipment has increased steadily in recent years, driven primarily by government standards. Although most of the units have efficiencies near the minimum federal standards, a significant number of models beat the standards by 10 to 30 percent. However, the larger the system, the narrower the range of efficiencies available and the fewer models available in the most efficient categories. For the buyer and the utility, this report reveals where to get efficiency information on current products, and a recommended purchasing process. It also examines the ratings, standards, and programs that can expand the number of high-efficiency models available.

Gregerson, J.; George, K.L.

1995-07-01T23:59:59.000Z

290

Laboratory Performance Testing of Residential Window Air Conditioners  

SciTech Connect

Window air conditioners are the dominant cooling product for residences, in terms of annual unit sales. They are inexpensive, portable and can be installed by the owner. For this reason, they are an attractive solution for supplemental cooling, for retrofitting air conditioning into a home which lacks ductwork, and for renters. Window air conditioners for sale in the United States are required to meet very modest minimum efficiency standards. Four window air conditioners' performance were tested in the Advanced HVAC Systems Laboratory on NREL's campus in Golden, CO. In order to separate and study the refrigerant system's performance, the unit's internal leakage pathways, the unit's fanforced ventilation, and the leakage around the unit resulting from installation in a window, a series of tests were devised that focused on each aspect of the unit's performance. These tests were designed to develop a detailed performance map to determine whole-house performance in different climates. Even though the test regimen deviated thoroughly from the industry-standard ratings test, the results permit simple calculation of an estimated rating for both capacity and efficiency that would result from a standard ratings test. Using this calculation method, it was found that the three new air conditioners' measured performance was consistent with their ratings. This method also permits calculation of equivalent SEER for the test articles. Performance datasets were developed across a broad range of indoor and outdoor operating conditions, and used them to generate performance maps.

Winkler, J.; Booten, C.; Christensen, D.; Tomerlin, J.

2013-03-01T23:59:59.000Z

291

Advanced Energy Efficient Roof System  

SciTech Connect

Energy consumption in buildings represents 40 percent of primary U.S. energy consumption, split almost equally between residential (22%) and commercial (18%) buildings.1 Space heating (31%) and cooling (12%) account for approximately 9 quadrillion Btu. Improvements in the building envelope can have a significant impact on reducing energy consumption. Thermal losses (or gains) from the roof make up 14 percent of the building component energy load. Infiltration through the building envelope, including the roof, accounts for an additional 28 percent of the heating loads and 16 percent of the cooling loads. These figures provide a strong incentive to develop and implement more energy efficient roof systems. The roof is perhaps the most challenging component of the building envelope to change for many reasons. The engineered roof truss, which has been around since 1956, is relatively low cost and is the industry standard. The roof has multiple functions. A typical wood frame home lasts a long time. Building codes vary across the country. Customer and trade acceptance of new building products and materials may impede market penetration. The energy savings of a new roof system must be balanced with other requirements such as first and life-cycle costs, durability, appearance, and ease of construction. Conventional residential roof construction utilizes closely spaced roof trusses supporting a layer of sheathing and roofing materials. Gypsum board is typically attached to the lower chord of the trusses forming the finished ceiling for the occupied space. Often in warmer climates, the HVAC system and ducts are placed in the unconditioned and otherwise unusable attic. High temperature differentials and leaky ducts result in thermal losses. Penetrations through the ceilings are notoriously difficult to seal and lead to moisture and air infiltration. These issues all contribute to greater energy use and have led builders to consider construction of a conditioned attic. The options considered to date are not ideal. One approach is to insulate between the trusses at the roof plane. The construction process is time consuming and costs more than conventional attic construction. Moreover, the problems of air infiltration and thermal bridges across the insulation remain. Another approach is to use structurally insulated panels (SIPs), but conventional SIPs are unlikely to be the ultimate solution because an additional underlying support structure is required except for short spans. In addition, wood spline and metal locking joints can result in thermal bridges and gaps in the foam. This study undertook a more innovative approach to roof construction. The goal was to design and evaluate a modular energy efficient panelized roof system with the following attributes: (1) a conditioned and clear attic space for HVAC equipment and additional finished area in the attic; (2) manufactured panels that provide structure, insulation, and accommodate a variety of roofing materials; (3) panels that require support only at the ends; (4) optimal energy performance by minimizing thermal bridging and air infiltration; (5) minimal risk of moisture problems; (6) minimum 50-year life; (7) applicable to a range of house styles, climates and conditions; (8) easy erection in the field; (9) the option to incorporate factory-installed solar systems into the panel; and (10) lowest possible cost. A nationwide market study shows there is a defined market opportunity for such a panelized roof system with production and semi-custom builders in the United States. Senior personnel at top builders expressed interest in the performance attributes and indicate long-term opportunity exists if the system can deliver a clear value proposition. Specifically, builders are interested in (1) reducing construction cycle time (cost) and (2) offering increased energy efficiency to the homebuyer. Additional living space under the roof panels is another low-cost asset identified as part of the study. The market potential is enhanced through construction activity levels in target marke

Jane Davidson

2008-09-30T23:59:59.000Z

292

Managing Energy Efficiency Improvement  

E-Print Network (OSTI)

In 1991, the World Business Council for Sustainable Development (WBCSD) introduced “Eco- Efficiency” as a management strategy to link financial and environmental performance to create more value with less ecological impact. Based on this strategy, CETAC-WEST (Canadian Environmental Technology Advancement Corporation - West), in mid-2000, introduced a practical approach to eco-efficiency to Western Canada's upstream oil and gas sector. The CETAC-WEST Eco-Efficiency Program, focused primarily on sour gas processing facilities, has developed methods and programs to identify opportunities for energy conservation and GHG reductions. The program outlined in this paper consists of four interrelated phases that are used to identify and track efficiency opportunities as well as promote the use of energy efficient methodologies and technologies. If, as program results suggest, 15% to 20% of the gas that is now consumed at by plant operations can be saved through efficiencies, it would save $500 to $700 million worth of gas for sale on the market. Although this small Pilot Program in the gas processing sector has surfaced major opportunities, there are significantly greater opportunities in other sectors with high GHG emissions intensity, such as sweet gas processing, conventional oil, heavy oil and oil sands. Capturing these opportunities will require a carefully considered strategy. This strategy should include, in addition to commitments for expanding the scope of the current Program, sustained leadership by industry champions and by governments - all aimed at changing the operating mode and improving the culture in the oil and gas industry.

Almaguer, J.

2006-01-01T23:59:59.000Z

293

Efficient Windows Collaborative  

SciTech Connect

The project goals covered both the residential and commercial windows markets and involved a range of audiences such as window manufacturers, builders, homeowners, design professionals, utilities, and public agencies. Essential goals included: (1) Creation of 'Master Toolkits' of information that integrate diverse tools, rating systems, and incentive programs, customized for key audiences such as window manufacturers, design professionals, and utility programs. (2) Delivery of education and outreach programs to multiple audiences through conference presentations, publication of articles for builders and other industry professionals, and targeted dissemination of efficient window curricula to professionals and students. (3) Design and implementation of mechanisms to encourage and track sales of more efficient products through the existing Window Products Database as an incentive for manufacturers to improve products and participate in programs such as NFRC and ENERGY STAR. (4) Development of utility incentive programs to promote more efficient residential and commercial windows. Partnership with regional and local entities on the development of programs and customized information to move the market toward the highest performing products. An overarching project goal was to ensure that different audiences adopt and use the developed information, design and promotion tools and thus increase the market penetration of energy efficient fenestration products. In particular, a crucial success criterion was to move gas and electric utilities to increase the promotion of energy efficient windows through demand side management programs as an important step toward increasing the market share of energy efficient windows.

Nils Petermann

2010-02-28T23:59:59.000Z

294

Efficient Windows Collaborative  

SciTech Connect

The project goals covered both the residential and commercial windows markets and involved a range of audiences such as window manufacturers, builders, homeowners, design professionals, utilities, and public agencies. Essential goals included: (1) Creation of 'Master Toolkits' of information that integrate diverse tools, rating systems, and incentive programs, customized for key audiences such as window manufacturers, design professionals, and utility programs. (2) Delivery of education and outreach programs to multiple audiences through conference presentations, publication of articles for builders and other industry professionals, and targeted dissemination of efficient window curricula to professionals and students. (3) Design and implementation of mechanisms to encourage and track sales of more efficient products through the existing Window Products Database as an incentive for manufacturers to improve products and participate in programs such as NFRC and ENERGY STAR. (4) Development of utility incentive programs to promote more efficient residential and commercial windows. Partnership with regional and local entities on the development of programs and customized information to move the market toward the highest performing products. An overarching project goal was to ensure that different audiences adopt and use the developed information, design and promotion tools and thus increase the market penetration of energy efficient fenestration products. In particular, a crucial success criterion was to move gas and electric utilities to increase the promotion of energy efficient windows through demand side management programs as an important step toward increasing the market share of energy efficient windows.

Nils Petermann

2010-02-28T23:59:59.000Z

295

High Performance Computing: Modeling & Simulation  

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

High Performance Computing: Modeling & Simulation High Performance Computing: Modeling & Simulation Express Licensing Adaptive Real-Time Methodology for Optimizing Energy-Efficient...

296

Energy Efficiency Manual  

E-Print Network (OSTI)

Review: Energy Efficiency Manual By Donald R. WulfinghoffWulfinghoff, Donald R. Energy Efficiency Manual. Wheaton,and efficiently. The Energy Efficiency Manual offers up-to-

Weintraub, Irwin

2000-01-01T23:59:59.000Z

297

MINIMUM EMITTANCE LATTICE FOR SYNCHROTRON RADIATION STORAGE RINGS  

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

MINIMUM EMITTANCE LATTICE FOR MINIMUM EMITTANCE LATTICE FOR SYNCHROTRON RADIATION STORAGE RINGS 1. C. Teng ANL/FNAL LS-17 L. Teng March 18, 1985 The natural emittance of an electron beam in a storage ring is given by (see e.g., M. Sands, SLAC 21) (1) where Cq =~~= 3.832 x 10-l3 m 32/3 mc J x partition factor in the bending plane y = total energy in mc 2 uni ts p orbit radius in bending magnets (assumed the same in all magne ts) H yn 2 - + 2ann ' + Bn I 2 ( a, B, Y = betatron functions ) n, n I dispersion functions <> = averaging over bending magnets We shall calculate for each bending magnet, then average over all magnets. 2 A. General Expression for H This can be calculated in a straightforward manner, but we can save a great deal of arithmetic with some preliminary formal analytical

298

The minimum-uncertainty coherent states for Landau levels  

Science Conference Proceedings (OSTI)

The Glauber minimum-uncertainty coherent states with two variables for Landau levels, based on the representation of Weyl-Heisenberg algebra by two different modes, have been studied about four decades ago. Here, we introduce new two-variable coherent states with minimum uncertainty relationship for Landau levels in three different methods: the infinite unitary representation of su(1, 1) is realized in two different methods, first, by consecutive levels with the same energy gaps and also with the same value for z-angular momentum quantum number, then, by shifting z-angular momentum mode number by two units while the energy level remaining the same. Besides, for su(2), whether by lowest Landau levels or Landau levels with lowest z-angular momentum, just one finite unitary representation is introduced. Having constructed the generalized Klauder-Perelomov coherent states, for any of the three representations, we obtain their Glauber coherency by displacement operator of Weyl-Heisenberg algebra.

Dehghani, A. [Physics Department, Payame Noor University, P. O. Box 19395-4697 Tehran (Iran, Islamic Republic of); Fakhri, H. [Department of Theoretical Physics and Astrophysics, Faculty of Physics, University of Tabriz, P. O. Box 51666-16471 Tabriz (Iran, Islamic Republic of); Mojaveri, B. [Department of Physics, Azarbaijan Shahid Madani University, P. O. Box 51745-406 Tabriz (Iran, Islamic Republic of)

2012-12-15T23:59:59.000Z

299

JBIG2 Symbol Dictionary Design Based on Minimum Spanning Trees  

E-Print Network (OSTI)

The JBIG2 standard is a very flexible bi-level image coding strategy based on pattern matching. The encoder collects a set of symbols in a dictionary and encodes a page by reference to the dictionary symbols. JBIG2 allows the encoder to view all symbols and choose a good set for the dictionary. In this paper, we examine the bit rate trade-off that arises in choosing different dictionary sizes. In particular, we propose a suboptimal dictionary design technique based on minimum spanning trees. This technique gives competitive compression ratios and allows us to specify the dictionary size almost arbitrarily, thus providing a way to study the bit rate trade-off problem in detail. Keywords: JBIG2, Text image compression, Symbol dictionary, Minimum spanning tree 1

Yan Ye; Pamela Cosman

2000-01-01T23:59:59.000Z

300

On Allocation Policies for Power and Performance  

E-Print Network (OSTI)

With the increasing popularity of Internet-based services and applications, power efficiency is becoming a major concern for data center operators, as high electricity consumption not only increases greenhouse gas emissions, but also increases the cost of running the server farm itself. In this paper we address the problem of maximizing the revenue of a service provider by means of dynamic allocation policies that run the minimum amount of servers necessary to meet user's requirements in terms of performance. The results of several experiments executed using Wikipedia traces are described, showing that the proposed schemes work well, even if the workload is non-stationary. Since any resource allocation policy requires the use of forecasting mechanisms, various schemes allowing compensating errors in the load forecasts are presented and evaluated.

Dyachuk, Dmytro; 10.1109/GRID.2010.5697986

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Rating the energy performance of buildings  

SciTech Connect

In order to succeed in developing a more sustainable society, buildings will need to be continuously improved. This paper discusses how to rate the energy performance of buildings. A brief review of recent approaches to energy rating is presented. It illustrates that there is no single correct or wrong concept, but one needs to be aware of the relative impact of the strategies. Different strategies of setting energy efficiency standards are discussed and the advantages of the minimum life cycle cost are shown. Indicators for building energy rating based on simulations, aggregated statistics and expert knowledge are discussed and illustrated in order to demonstrate strengths and weaknesses of each approach. In addition, the importance of considering the level of amenities offered is presented. Attributes of a rating procedure based on three elements, flexible enough for recognizing different strategies to achieve energy conservation, is proposed.

Olofsson, Thomas; Meier, Alan; Lamberts, Roberto

2004-12-01T23:59:59.000Z

302

A High Efficiency PSOFC/ATS-Gas Turbine Power System  

DOE Green Energy (OSTI)

A study is described in which the conceptual design of a hybrid power system integrating a pressurized Siemens Westinghouse solid oxide fuel cell generator and the Mercury{trademark} 50 gas turbine was developed. The Mercury{trademark} 50 was designed by Solar Turbines as part of the US. Department of Energy Advanced Turbine Systems program. The focus of the study was to develop the hybrid power system concept that principally would exhibit an attractively-low cost of electricity (COE). The inherently-high efficiency of the hybrid cycle contributes directly to achieving this objective, and by employing the efficient, power-intensive Mercury{trademark} 50, with its relatively-low installed cost, the higher-cost SOFC generator can be optimally sized such that the minimum-COE objective is achieved. The system cycle is described, major system components are specified, the system installed cost and COE are estimated, and the physical arrangement of the major system components is discussed. Estimates of system power output, efficiency, and emissions at the system design point are also presented. In addition, two bottoming cycle options are described, and estimates of their effects on overall-system performance, cost, and COE are provided.

W.L. Lundberg; G.A. Israelson; M.D. Moeckel; S.E. Veyo; R.A. Holmes; P.R. Zafred; J.E. King; R.E. Kothmann

2001-02-01T23:59:59.000Z

303

Impact of Minimum Load Operation on Steam Turbines  

Science Conference Proceedings (OSTI)

Some utilities, as part of a fleet management strategy, are keeping baseload-design plants that are not competitive for 24/7 dispatch at minimum loads to increase their ability to respond to changing demand. Units being operated this way face some associated risks and may see an additional drop in availability, further exacerbating supply management issues and increasing O&M costs. This report seeks to capture ...

2013-11-05T23:59:59.000Z

304

Minimum weight perfect matching in O(1) parallel time  

E-Print Network (OSTI)

Consider a 2-D square array of qubits of infinite extent. We provide a formal proof that the infinite size minimum weight perfect matching problem associated with running a particular class of topological quantum error correction codes on this array can be exactly solved with a corresponding infinite 2-D square array of classical computing devices in constant average time per round of error detection provided physical error rates are below fixed nonzero values, and other physically reasonable assumptions.

Austin G. Fowler

2013-07-06T23:59:59.000Z

305

Options for Generating Steam Efficiently  

E-Print Network (OSTI)

This paper describes how plant engineers can efficiently generate steam when there are steam generators and Heat Recovery Steam Generators in their plant. The process consists of understanding the performance characteristics of the various equipment as a function of load and operating them close to the maximum efficiency point.

Ganapathy, V.

1996-04-01T23:59:59.000Z

306

Server efficiency rating tool (SERT)  

Science Conference Proceedings (OSTI)

The Server Efficiency Rating Tool (SERT) [1] has been developed by Standard Performance Evaluation Corporation (SPEC) [2] at the request of the US Environmental Protection Agency (EPA) [3], prompted by concerns that US datacenters consumed almost 3% ... Keywords: benchmark, datacenter, energy efficiency, energy star, environmental protection agency, epa, power, rating tool, sert, server, spec

Klaus-Dieter Lange; Mike G. Tricker; Jeremy A. Arnold; Hansfried Block; Sanjay Sharma

2012-04-01T23:59:59.000Z

307

Home Performance with Energy Star Financing | Department of Energy  

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

Home Performance with Energy Star Financing Home Performance with Energy Star Financing Home Performance with Energy Star Financing < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Cooling Appliances & Electronics Other Sealing Your Home Design & Remodeling Windows, Doors, & Skylights Ventilation Manufacturing Heat Pumps Commercial Lighting Lighting Water Heating Bioenergy Solar Program Info Funding Source Energy Efficiency Portfolio Standard (EEPS)/Regional Greenhouse Gas Initiative (RGGI) State New York Program Type State Loan Program Rebate Amount Up to 100% of costs; loans from $3,000 - $25,000 (minimum loan of $1,500 for income qualified customers); loan limit is $13,000 for projects with a

308

Determining Reserves in Low Permeability and Layered Reservoirs Using the Minimum Terminal Decline Rate Method: How Good are the Predictions?  

E-Print Network (OSTI)

This thesis evaluates the applicability of forecasting production from low permeability and layered tight gas wells using the Arps hyperbolic equation at earlier times and then switching to the exponential form of the equation at a predetermined minimum decline rate. This methodology is called the minimum terminal decline rate method. Two separate completion types have been analyzed. The first is horizontal completions with multi-stage hydraulic fractures while the second is vertical fractured wells in layered formations, completed with hydraulic fractures. For both completion types both simulated data and real world well performance histories have been evaluated using differing minimum terminal decline rates and the benefit of increasing portions of production history to make predictions. The application of the minimum terminal decline rate method to the simulated data in this study (3 percent minimum decline applied to multiple fractured horizontal wells MFHW- and 7 percent applied to vertical fractured layered wells) gave high errors for some simulations within the first two years. Once additional production data is considered in making predictions, the errors in estimated ultimate recovery and in remaining reserves is significantly reduced. This result provides a note of caution, when using the minimum decline rate method for forecasting using small quantities of production history. The evaluation of real world data using the minimum terminal decline rate method introduces other inaccuracies such as poor data quality, low data frequency, operational changes which affect the production profile and workovers / re-stimulations which require a restart of production forecasting process. Real well data for MFHW comes from the Barnett Shale completions of the type which have been widely utilized since 2004. There is insufficient production history from real wells to determine an appropriate minimum terminal decline rate. In the absence of suitable analogs for the determination of the minimum terminal decline rate it would be impossible to correctly apply this methodology. Real well data for vertical fractured layered wells from the Carthage Cotton Valley field indicate that for wells similar to Conoco operated Panola County wells a feasible decline rate is between 5 percent and 10 percent. Further if a consistent production trend and with more than 2 years of production history are used to forecast, the EUR can be predicted to within plus/minus 10 percent and remaining reserves to within plus/minus 15 percent.

McMillan, Marcia Donna

2011-05-01T23:59:59.000Z

309

Energy and Spectral Efficiency of Very Large Multiuser MIMO Systems  

E-Print Network (OSTI)

A multiplicity of autonomous terminals simultaneously transmits data streams to a compact array of antennas. The array uses imperfect channel-state information derived from transmitted pilots to extract the individual data streams. The power radiated by the terminals can be made inversely proportional to the square-root of the number of base station antennas with no reduction in performance. In contrast if perfect channel-state information were available the power could be made inversely proportional to the number of antennas. Lower capacity bounds for maximum-ratio combining (MRC), zero-forcing (ZF) and minimum mean-square error (MMSE) detection are derived. A MRC receiver normally performs worse than ZF and MMSE. However as power levels are reduced, the cross-talk introduced by the inferior maximum-ratio receiver eventually falls below the noise level and this simple receiver becomes a viable option. The tradeoff between the energy efficiency (as measured in bits/J) and spectral efficiency (as measured in b...

Ngo, Hien Quoc; Marzetta, Thomas L

2011-01-01T23:59:59.000Z

310

Energy Efficiency Resource Standard | Department of Energy  

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

Energy Efficiency Resource Standard Energy Efficiency Resource Standard Energy Efficiency Resource Standard < Back Eligibility Investor-Owned Utility Savings Category Other Program Info State Colorado Program Type Energy Efficiency Resource Standard Provider Colorado Public Utilities Commission The Colorado General Assembly passed a law ([http://www.leg.state.co.us/CLICS/CLICS2007A/csl.nsf/fsbillcont3/5EA2048E... HB 1037])in 2007 requiring the investor-owned electric and natural gas utilities to adopt demand-side management (DSM) programs that provide financial incentives for their customers to purchase more efficient equipment and processes, and to engage in demand response. The law provided minimum energy and demand savings targets but also authorized the Colorado Public Utilities Commission (PUC) to revise the goals and establish interim

311

Avista Utilities - LEED (NC or EB) Certification Energy Efficiency...  

Open Energy Info (EERE)

a minimum of 4 points for optimized energy performance and comply with all LEED whole building modeling requirements are eligible for a 1.25 per conditioned square foot rebate...

312

Considerations for efficient airflow design in cleanrooms  

E-Print Network (OSTI)

common recirculating air system designs: fan-tower (FT) withfan-filter unit (FFU) Improving Airflow System Efficiency A high-performance cleanroom airflow designfan motor operation. These results point to opportunities for improving energy efficiency at the design

Xu, Tengfang

2004-01-01T23:59:59.000Z

313

Photometric assessment of energy efficient torchieres  

E-Print Network (OSTI)

performance of a high-efficiency CFL torchiere in comparisonCFL - Half Halogen - Full Halogen - Half Actual Wattage Lamp Fixture Fixture Lumens Efficiencyefficiency and conservation issues to date. The LBNL-designed energy efficient CFL

Page, Erik; Siminovitch, Michael

1997-01-01T23:59:59.000Z

314

Multicasting in Large Wireless Networks: Bounds on the Minimum Energy per Bit  

E-Print Network (OSTI)

We consider scaling laws for maximal energy efficiency of communicating a message to all the nodes in a wireless network, as the number of nodes in the network becomes large. Two cases of large wireless networks are studied -- dense random networks and constant density (extended) random networks. In addition, we also study finite size regular networks in order to understand how regularity in node placement affects energy consumption. We first establish an information-theoretic lower bound on the minimum energy per bit for multicasting in arbitrary wireless networks when the channel state information is not available at the transmitters. Upper bounds are obtained by constructing a simple flooding scheme that requires no information at the receivers about the channel states or the locations and identities of the nodes. The gap between the upper and lower bounds is only a constant factor for dense random networks and regular networks, and differs by a poly-logarithmic factor for extended random networks. Further...

Jain, Aman; Verdu, Sergio

2009-01-01T23:59:59.000Z

315

Analysis of Energy Efficiency in Fading Channels under QoS Constraints  

E-Print Network (OSTI)

Energy efficiency in fading channels in the presence of Quality of Service (QoS) constraints is studied. Effective capacity, which provides the maximum arrival rate that a wireless channel can sustain while satisfying statistical QoS constraints, is considered. Spectral efficiency--bit energy tradeoff is analyzed in the low-power and wideband regimes by employing the effective capacity formulation, rather than the Shannon capacity. Through this analysis, energy requirements under QoS constraints are identified. The analysis is conducted under two assumptions: perfect channel side information (CSI) available only at the receiver and perfect CSI available at both the receiver and transmitter. In particular, it is shown in the low-power regime that the minimum bit energy required under QoS constraints is the same as that attained when there are no such limitations. However, this performance is achieved as the transmitted power vanishes. Through the wideband slope analysis, the increased energy requirements at lo...

Gursoy, Mustafa Cenk; Velipasalar, Senem

2008-01-01T23:59:59.000Z

316

A Repeated Game Formulation of Energy-Efficient Decentralized Power Control  

E-Print Network (OSTI)

Decentralized multiple access channels where each transmitter wants to selfishly maximize his transmission energy-efficiency are considered. Transmitters are assumed to choose freely their power control policy and interact (through multiuser interference) several times. It is shown that the corresponding conflict of interest can have a predictable outcome, namely a finitely or discounted repeated game equilibrium. Remarkably, it is shown that this equilibrium is Pareto-efficient under reasonable sufficient conditions and the corresponding decentralized power control policies can be implemented under realistic information assumptions: only individual channel state information and a public signal are required to implement the equilibrium strategies. Explicit equilibrium conditions are derived in terms of minimum number of game stages or maximum discount factor. Both analytical and simulation results are provided to compare the performance of the proposed power control policies with those already existing and exploiting the same information assumptions namely, those derived for the one-shot and Stackelberg games.

Mael Le Treust; Samson Lasaulce

2010-07-28T23:59:59.000Z

317

OpenEI - efficiency  

Open Energy Info (EERE)

Appliance Data - Appliance Data - Central Air Conditioners - 2010 http://en.openei.org/datasets/node/132 View 2010 energy efficiency data from AeroSys Inc, Coaire, Cold Point, First Operations, LG Electronics, Nordyne, and Quietside manufacturers.  Data includes cooling capacity, cooling performance, heating capacity, and heating performance.   Spreadsheet was created by combining the tables in pdf files that are included in the zip file.

License
Type of License: 

318

Engine Combustion & Efficiency - FEERC  

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

Engine Combustion & Efficiency Engine Combustion & Efficiency ORNL currently and historically supports the U.S. DOE on multi-cylinder and vehicle applications of diesel combustion, lean burn gasoline combustion, and low temperature combustion processes, and performs principal research on efficiency enabling technologies including emission controls, thermal energy recovery, and bio-renewable fuels. Research areas span from fundamental concepts to engine/vehicle integration and demonstration with a particular emphasis on the following areas: Thermodynamics for identifying and characterizing efficiency opportunities for engine-systems as well as the development of non-conventional combustion concepts for reducing fundamental combustion losses. Nonlinear sciences for improving the physical understanding and

319

Evaluating Parallel I/O Energy Efficiency  

Science Conference Proceedings (OSTI)

Energy efficiency and parallel I/O performance are two primary constraints in high performance computing (HPC). Large scale computing systems consume vast amounts of energy and require scalable I/O performance to meet the needs of a broad spectrum of ... Keywords: Energy efficiency, Parallel I/O, DVFS

Rong Ge

2010-12-01T23:59:59.000Z

320

An Approach to Evaluating Equipment Efficiency Policies  

E-Print Network (OSTI)

The National Energy Conservation Policy Act of 1978 authorized studies of several types of industrial equipment to evaluate the technical and economic feasibility of labeling rules and minimum energy efficiency standards. An approach to the evaluation of these and related policy options is under development. The approach includes equipment classification and characterization, market characterization, and the subsequent evaluation of effectiveness and costs of the policy options. Technical, economic, and marketing data obtained with the cooperation of industrial groups, such of policy impacts.

Newsom, D. E.; Evans, A. R.

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

An Obstacle-avoiding Minimum Variation B-spline Problem  

E-Print Network (OSTI)

We study the problem of computing a planar curve, restricted to lie between two given polygonal chains, such that the integral of the square of arc-length derivative of curvature along the curve is minimized. We introduce the Minimum Variation B-spline problem which is a linearly constrained optimization problem over curves defined by Bspline functions only. An empirical investigation indicates that this problem has one unique solution among all uniform quartic B-spline functions. Furthermore, we prove that, for any B-spline function, the convexity properties of the problem are preserved subject to a scaling and translation of the knot sequence defining the B-spline. 1

Tomas Berglund; Inge Söderkvist

2003-01-01T23:59:59.000Z

322

Review of International Methods of Test to Rate the Efficiency of Water  

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

Review of International Methods of Test to Rate the Efficiency of Water Review of International Methods of Test to Rate the Efficiency of Water Heaters Title Review of International Methods of Test to Rate the Efficiency of Water Heaters Publication Type Report LBNL Report Number LBNL-5187E Year of Publication 2011 Authors Lutz, James D. Subsidiary Authors Energy Analysis Department Document Number LBNL-5187E Pagination 21 Date Published January Publisher Lawrence Berkeley National Laboratory City Berkeley ISBN Number LBNL-5187E Abstract The American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE) Standards Project Committee (SPC) 118.2, Method of Testing for Rating Residential Water Heaters, is seeking to improve the test procedure used for measuring the energy efficiency of residential gas and electric water heaters. ASHRAE is seeking to develop an improved test procedure in part to support the U.S. Department of Energy's (DOE's) desire to update and amend the water heater test procedure underlying the minimum energy efficiency standards for water heaters. DOE's test procedures are often based on or reference ASHRAE standards.DOE's most recent minimum energy performance standards (MEPS) for residential water heaters were promulgated in 2010.[1] The associated test procedures are stipulated in the Code of Federal Regulations (CFR).[2] Although DOE currently is conducting a rulemaking to review and possibly amend the test procedures for residential water heaters, that rulemaking pertains to accounting for energy consumed during standby and off modes. In its notice of proposed rulemaking published in the Federal Register on August 30, 2010, DOE tentatively concluded that the test procedure for water heaters already fully accounts for and incorporates the energy consumed during standby and off modes [3].

323

High Efficiency, Clean Combustion  

DOE Green Energy (OSTI)

Energy use in trucks has been increasing at a faster rate than that of automobiles within the U.S. transportation sector. According to the Energy Information Administration (EIA) Annual Energy Outlook (AEO), a 23% increase in fuel consumption for the U.S. heavy duty truck segment is expected between 2009 to 2020. The heavy duty vehicle oil consumption is projected to grow between 2009 and 2050 while light duty vehicle (LDV) fuel consumption will eventually experience a decrease. By 2050, the oil consumption rate by LDVs is anticipated to decrease below 2009 levels due to CAFE standards and biofuel use. In contrast, the heavy duty oil consumption rate is anticipated to double. The increasing trend in oil consumption for heavy trucks is linked to the vitality, security, and growth of the U.S. economy. An essential part of a stable and vibrant U.S. economy is a productive U.S. trucking industry. Studies have shown that the U.S. gross domestic product (GDP) is strongly correlated to freight transport. Over 90% of all U.S. freight tonnage is transported by diesel power and over 75% is transported by trucks. Given the vital role that the trucking industry plays in the economy, improving the efficiency of the transportation of goods was a central focus of the Cummins High Efficient Clean Combustion (HECC) program. In a commercial vehicle, the diesel engine remains the largest source of fuel efficiency loss, but remains the greatest opportunity for fuel efficiency improvements. In addition to reducing oil consumption and the dependency on foreign oil, this project will mitigate the impact on the environment by meeting US EPA 2010 emissions regulations. Innovation is a key element in sustaining a U.S. trucking industry that is competitive in global markets. Unlike passenger vehicles, the trucking industry cannot simply downsize the vehicle and still transport the freight with improved efficiency. The truck manufacturing and supporting industries are faced with numerous challenges to reduce oil consumption and greenhouse gases, meet stringent emissions regulations, provide customer value, and improve safety. The HECC program successfully reduced engine fuel consumption and greenhouse gases while providing greater customer valve. The US EPA 2010 emissions standard poses a significant challenge for developing clean diesel powertrains that meet the DoE Vehicle Technologies Multi-Year Program Plan (MYPP) for fuel efficiency improvement while remaining affordable. Along with exhaust emissions, an emphasis on heavy duty vehicle fuel efficiency is being driven by increased energy costs as well as the potential regulation of greenhouse gases. An important element of the success of meeting emissions while significantly improving efficiency is leveraging Cummins component technologies such as fuel injection equipment, aftertreatment, turbomahcinery, electronic controls, and combustion systems. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 55% peak brake thermal efficiency for the engine plus aftertreatment system. The first step in developing high efficiency clean products has been supported by the DoE co-sponsored HECC program. The objectives of the HECC program are: (1) To design and develop advanced diesel engine architectures capable of achieving US EPA 2010 emission regulations while improving the brake thermal efficiency by 10% compared to the baseline (a state of the art 2007 production diesel engine). (2) To design and develop components and subsystems (fuel systems, air handling, controls, etc) to enable construction and development of multi-cylinder engines. (3) To perform an assessment of the commercial viability of the newly developed engine technology. (4) To specify fuel properties conducive to improvements in emissions, reliability, and fuel efficiency for engines using high-efficiency clean combustion (HECC) technologies. To demonstrate the technology is compatible with B2

Donald Stanton

2010-03-31T23:59:59.000Z

324

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners  

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

Bridging Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners John Shugars, Consultant Philip Coleman, Lawrence BerkeleyNational Laboratory ChristopherPayne, Lawrence Berkeley National Laboratory Laura Van Wie McGrory, Lawrence Berkeley National Laboratory ABSTRACT The energy efficiency ofmany products has increased markedly over the past decade. A conspicuous exception to this trend is commercial packaged rooftop air conditioners, which have experiencedlittle to no efficiency improvement since 1992 when the Energy Policy Act of 1992 imposed federal minimum standards. Packaged rooftop units have been estimated to use on the order of76 billion kWh annually in the US, at a cost ofroughly $5.6 billion. Sales of these units are growing, and the majority of units sold have energy efficiency ratios (EERs) at orjust above the current national minimum efficiency

325

improving energy efficiency in the built environment is now seen as a growing  

E-Print Network (OSTI)

improving energy efficiency in the built environment is now seen as a growing policy priority the 1973 oil embargo. Codes by state but they generally establish a minimum energy efficiency stan- dard.S. Department of Energy to establish building code energy efficiency targets by January 1, 2014. it also

Kotchen, Matthew J.

326

Welcome to the Efficient Windows Collaborative  

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

Welcome to the Efficient Windows Collaborative Welcome to the Efficient Windows Collaborative YOUR GATEWAY TO INFORMATION ON HOW TO CHOOSE ENERGY-EFFICIENT RESIDENTIAL WINDOWS 101 Efficient Windows Collaborative (EWC) members have made a commitment to manufacture and promote energy-efficient windows. This site provides unbiased information on the benefits of energy-efficient windows, descriptions of how they work, and recommendations for their selection and use. Selecting Windows for New Construction Window Selection Tool Selection Process Design Guidance Installation Selecting Replacement Windows Window Selection Tool Assessing Replacement Options Selection Process Design Guidance Installation Understanding Windows Benefits of Energy Efficient Windows Design Considerations How to Measure Performance Window Technologies

327

Resources on Water Efficiency | Department of Energy  

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

Water Efficiency » Resources on Water Efficiency Water Efficiency » Resources on Water Efficiency Resources on Water Efficiency October 8, 2013 - 10:03am Addthis Many helpful resources about water efficiency are available. Also see Contacts. Federal Resources Reverse Osmosis Optimization Technology Evaluation: -This FEMP technology evaluation assesses techniques for optimizing reverse osmosis systems to increase system performance and water efficiency. Side Stream Filtration for Cooling Towers (Full Report): Comprehensive document assessing side stream filtration options for cooling towers, with an objective to assess key attributes that optimize energy and water savings along with providing information on specific technology and implementation options. Technical Evaluation of Side Stream Filtration for Cooling Towers (Fact

328

Minimum bias and underlying event studies at CDF  

SciTech Connect

Soft, non-perturbative, interactions are poorly understood from the theoretical point of view even though they form a large part of the hadronic cross section at the energies now available. We review the CDF studies on minimum-bias ad underlying event in p{bar p} collisions at 2 TeV. After proposing an operative definition of 'underlying event', we present part of a systematic set of measurements carried out by the CDF Collaboration with the goal to provide data to test and improve the QCD models of hadron collisions. Different analysis strategies of the underlying event and possible event topologies are discussed. Part of the CDF minimum-bias results are also presented: in this sample, that represent the full inelastic cross-section, we can test simultaneously our knowledge of all the components that concur to form hadronic interactions. Comparisons with MonteCarlo simulations are always shown along with the data. These measurements will also contribute to more precise estimates of the soft QCD background of high-p{sub T} observables.

Moggi, Niccolo; /INFN, Bologna

2010-01-01T23:59:59.000Z

329

The elusive minimum viable population size for white sturgeon  

SciTech Connect

Biological conservation of sturgeon populations is a concern for many species. Those responsible for managing the white sturgeon (Acipenser transmontanus) and similar species are interested in identifying extinction thresholds to avoid. Two thresholds that exist in theory are the minimum viable population size (MVP) and minimum amount of suitable habitat. In this paper, we present both model and empirical estimates of these thresholds. We modified a population viability analysis (PVA) model for white sturgeon to include two new Allee mechanisms. Despite this, PVA-based MVP estimates were unrealistically low compared with empirical estimates unless opportunities for spawning were assumed to be less frequent. PVA results revealed a trade-off between MVP and habitat thresholds; smaller populations persisted in longer river segments and vice versa. Our empirical analyses suggested (1) a MVP range based on population trends from 1,194 to 27,700 individuals, and (2) a MVP estimate of 4,000 individuals based on recruitment. Long-term historical population surveys are needed for more populations to pinpoint an MVP based on trends, whereas the available data were sufficient to estimate MVP based on recruitment. Beyond the MVP, we developed a hierarchical model for population status based on empirical data. Metapopulation support was the most important predictor of population health, followed by the length of free-flowing habitat, with habitat thresholds at 26 and 150 km. Together, these results suggest that habitat and connectivity are important determinants of population status that likely influence the site-specific MVP thresholds.

Jager, Yetta [ORNL; Lepla, Ken B. [Idaho Power Company; Van Winkle, Webb [Van Windle Environmental Consulting; James, Mr Brad [Washington Department of Fish and Wildlife; McAdam, Dr Steve [University of British Columbia, Vancouver

2010-01-01T23:59:59.000Z

330

Aligning Utility Interests with Energy Efficiency Objectives...  

Open Energy Info (EERE)

Aligning Utility Interests with Energy Efficiency Objectives: A Review of Recent Efforts at Decoupling and Performance Incentives Jump to: navigation, search Name Aligning Utility...

331

High Efficiency Engine Technologies Program  

Science Conference Proceedings (OSTI)

Caterpillar's Product Development and Global Technology Division carried out a research program on waste heat recovery with support from DOE (Department of Energy) and the DOE National Energy Technology Laboratory. The objective of the program was to develop a new air management and exhaust energy recovery system that would demonstrate a minimum 10% improvement in thermal efficiency over a base heavy-duty on-highway diesel truck engine. The base engine for this program was a 2007 C15 15.2L series-turbocharged on-highway truck engine with a LPL (low-pressure loop) exhaust recirculation system. The focus of the program was on the development of high efficiency turbomachinery and a high efficiency turbocompound waste heat recovery system. The focus of each area of development was as follows: (1) For turbine stages, the focus was on investigation and development of technologies that would improve on-engine exhaust energy utilization compared to the conventional radial turbines in widespread use today. (2) For compressor stages, the focus was on investigating compressor wheel design parameters beyond the range typically utilized in production, to determine the potential efficiency benefits thereof. (3) For turbocompound, the focus was on the development of a robust bearing system that would provide higher bearing efficiencies compared to systems used in turbocompound power turbines in production. None of the turbocharger technologies investigated involved addition of moving parts, actuators, or exotic materials, thereby increasing the likelihood of a favorable cost-value tradeoff for each technology. And the turbocompound system requires less hardware addition than competing bottoming cycle technologies, making it a more attractive solution from a cost and packaging standpoint. Main outcomes of the program are as follows: (1) Two turbine technologies that demonstrated up to 6% improvement in turbine efficiency on gas stand and 1-3% improvement in thermal efficiency in on-engine testing. (2) A compressor technology that demonstrated 1.5% improvement in compressor efficiency on gas stand compared to production available compressors. (3) A power turbine with high efficiency bearing system that demonstrated excellent rotordynamic stability throughout the required speed range, up to 60,000 rpm. (4) A predicted improvement (using engine simulation) in engine thermal efficiency of 7% at the peak torque design point, when combining the technologies developed in this program.

Rich Kruiswyk

2010-07-13T23:59:59.000Z

332

Welcome to the Efficient Windows Collaborative  

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

Measuring Performance: ENERGY STAR® Most Efficient Program 2013 Measuring Performance: ENERGY STAR® Most Efficient Program 2013 Windows for residential buildings are eligible for ENERGY STAR Most Efficient recognition in 2013. The U.S. EPA will add qualifying models to the ENERGY STAR Most Efficient 2013 product list for windows from January 1, 2013 through December 31, 2013. The following products are not eligible for Most Efficient recognition in 2013: Windows for commercial buildings Doors Skylights Tubular Daylighting Devices Energy Star Most Efficient Program Energy Star Zones The ENERGY STAR Most Efficient designation recognizes the most efficient products among those that qualify for the ENERGY STAR. These exceptional products represent the leading edge in energy efficient products for a given year. Criteria Windows must be ENERGY STAR qualified consistent with applicable ENERGY

333

What's Energy Efficiency?  

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

Who "does" efficiency? There's no such thing as the profession of energy efficiency-in fact, many professions participate in making the world more efficient. Mechanical, chemical,...

334

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners  

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

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Title Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Publication Type Conference Proceedings Year of Publication 2000 Authors Shugars, John, Philip Coleman, Christopher T. Payne, and Laura Van Wie McGrory Conference Name Proceedings from the 2000 ACEEE Summer Study on Energy Efficiency in Buildings Volume 10 Pagination 217-226 Date Published 01/2000 Abstract The energy efficiency ofmany products has increased markedly over the past decade. A conspicuous exception to this trend is commercialpackaged rooftop air conditioners, which have experiencedlittle to no efficiency improvement since 1992 when the Energy Policy Act of 1992 imposed federal minimum standards. Packaged rooftop units have been estimated to use on the order of76 billion kWh annually in the US, at a cost ofroughly $5.6 billion. Sales of these units are growing, and the majority of units sold have energy efficiency ratios (EERs) at orjust above the current national minimum efficiency standards. In this paper we document the static efficiencies ofcommercialpackaged air conditioners, explore the reasons behindthis efficiency gap, and assess opportunities for overcoming the barriers to efficiency improvements in these products.

335

Indianola Municipal Utilities - Energy Efficiency Rebate Program |  

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

Indianola Municipal Utilities - Energy Efficiency Rebate Program Indianola Municipal Utilities - Energy Efficiency Rebate Program Indianola Municipal Utilities - Energy Efficiency Rebate Program < Back Eligibility Commercial Residential Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Appliances & Electronics Commercial Lighting Lighting Maximum Rebate Central AC: $250 maximum; 10 unit maximum per customer per year Commercial Lighting: $5,000 per customer per year Air Source Heat Pumps: $500 maximum; 10 units per customer per year Geothermal Heat Pumps: $1,000 maximum, 5 units per customer per year Program Info State Iowa Program Type Utility Rebate Program Rebate Amount Central AC: $100/unit; $50 for each SEER above minimum Commercial Lighting: $2 - $25/fixture depending on type and efficiency

336

The impact of minimum age of employment regulation on child labor and schooling  

E-Print Network (OSTI)

Promoting minimum age of employment regulation has been a centerpiece in child labor policy for the last 15 years. If enforced, minimum age regulation would change the age profile of paid child employment. Using micro-data ...

Edmonds, Eric V

337

A New Perspective on Recent Global Warming: Asymmetric Trends of Daily Maximum and Minimum Temperature  

Science Conference Proceedings (OSTI)

Monthly mean maximum and minimum temperatures for over 50% (10%) of the Northern (Southern) Hemisphere landmass, accounting for 37% of the global landmass, indicate that the rise of the minimum temperature has occurred at a rate three times that ...

Thomas R. Karl; Richard W. Knight; Kevin P. Gallo; Thomas C. Peterson; Philip D. Jones; George Kukla; Neil Plummer; Vyacheslav Razuvayev; Janette Lindseay; Robert J. Charlson

1993-06-01T23:59:59.000Z

338

Building America Top Innovations 2013 Profile … High-Efficiency Window Air Conditioners  

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

inexpensive, portable, and can be installed by inexpensive, portable, and can be installed by home occupants, making them a good solution for supplemental cooling, for installing air conditioning in homes that lack ductwork, and for renters. As a result, 7.5 million window air conditioners are purchased each year in the United States-more than all other home cooling equipment combined. However, a window air conditioner is required to meet only modest minimum efficiency standards, and its typical installation in a window causes air leakage, which significantly reduces the equipment's performance. To measure the impact these products have on home energy use, researchers at the National Renewable Energy Laboratory (NREL) studied the performance of one 10-year-old and three new window air conditioners in a range of

339

Building America Top Innovations 2013 Profile … High-Efficiency Window Air Conditioners  

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

an inexpensive, portable form of spot cooling, an inexpensive, portable form of spot cooling, making them a good solution for supplemental cooling, for air conditioning in homes that lack ductwork, and for renters. As a result, 7.5 million window air conditioners are purchased each year in the United States-more than all other home cooling equipment combined. However, window air conditioners have low minimum efficiency standards, and their installation typically results in air leakage, which significantly reduces the equipment's performance. To measure the impact these products have on home energy use, researchers at the National Renewable Energy Laboratory (NREL) studied the performance of one 10-year-old and three new window air conditioners in a range of climates and conditions at NREL's Advanced Heating, Ventilation, and

340

Contracting Officer Warrant Requirements Function Experience Minimum Training Continuous Learning  

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

ACMP Flash 2011-62 ACMP Flash 2011-62 Contracting Officer Warrant Requirements Function Experience Minimum Training Continuous Learning GS-1105s with a warrant for purchases up to $25,000 At least 6 months of Government Purchase Card experience Certified to Level I in the ACMP Purchasing Program 80 hours every two years GS-1105s with a warrant for purchases $25,000 up to the simplified acquisition threshold At least 1 year of Government Purchase Card experience Certified to Level II in the ACMP Purchasing Program 80 hours every two years GS-1105s with a warrant for purchases over the simplified acquisition threshold At least 5 years of progressively complex contracting experience Certified to Level III in the ACMP Purchasing Program 80 hours every two years

Note: This page contains sample records for the topic "minimum efficiency performance" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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341

A simple model for evolution of proteins towards the global minimum of free energy  

E-Print Network (OSTI)

A simple model for evolution of proteins towards the global minimum of free energy Tamar Kaffe-Abramovich and Ron Unger Background: Proteins seem to have their native structure in a global minimum of free energy is in the global minimum of free energy. The aim of this study is to investigate such evolutionary processes

Unger, Ron

342

Minimum Multicolored Subgraph Problem in Multiplex PCR Primer Set Selection and  

E-Print Network (OSTI)

Minimum Multicolored Subgraph Problem in Multiplex PCR Primer Set Selection and Population is a common generalization of minimum cost multiplex PCR primer set selection and maximum likeli- hood and its variants model two important bioinformatics problems: minimum cost multiplex PCR primer set

Mandoiu, Ion

343

Energy Efficiency Program and Market Trends  

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

Energy Efficiency Program and Market Trends Energy Efficiency Program and Market Trends EETD's energy efficiency program and market trends research includes technical, economic and policy analysis to inform public and private decision-making on public-interest issues related to utility-sector energy efficiency programs and regulation, and government-funded energy efficiency initiatives. LBNL's research in this area is focused on: Energy efficiency portfolio planning and market assessment, Design and implementation of a portfolio of energy efficiency programs that achieve various policy objectives Utility sector energy efficiency business models, Options for administering energy efficiency programs, Evaluation, measurement and verification of energy efficiency impacts and ESCO industry and market trends and performance.

344

Appliance/Equipment Efficiency Standards | Open Energy Information  

Open Energy Info (EERE)

Appliance/Equipment Efficiency Standards Appliance/Equipment Efficiency Standards Jump to: navigation, search Many states have established minimum efficiency standards for certain appliances and equipment. In these states, the retail sale of appliances and equipment that do not meet the established standards is prohibited. The federal government has also established efficiency standards for certain appliances and equipment. When both the federal government and a state have adopted efficiency standards for the same type of appliance or equipment, the federal standard overrides the state standard even if the state standard is stricter. [1] Appliance/Equipment Efficiency Standards Incentives CSV (rows 1 - 14) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active Appliance Efficiency Regulations (California) Appliance/Equipment Efficiency Standards California Yes

345

Energy efficient data centers  

E-Print Network (OSTI)

Efficiency kW/ton Fan Coil Unit Design Efficiency CFM/kWEfficiency kW/ton Fan Coil Unit Design Efficiency CFM/kWEfficiency kW/ton Fan Coil Unit Design Efficiency CFM/kW

Tschudi, William; Xu, Tengfang; Sartor, Dale; Koomey, Jon; Nordman, Bruce; Sezgen, Osman

2004-01-01T23:59:59.000Z

346

Energy-efficient signal processing using FPGAs  

Science Conference Proceedings (OSTI)

In this paper, we present techniques for energy-efficient design at the algorithm level using FPGAs. We then use these techniques to create energy-efficient designs for two signal processing kernel applications: fast Fourier transform (FFT) and matrix ... Keywords: FFT, FPGA, energy efficient design techniques, matrix multiplicaiton, performance estimation

Seonil Choi; Ronald Scrofano; Viktor K. Prasanna; Ju-Wook Jang

2003-02-01T23:59:59.000Z

347

Optimization of Operating Parameters for Minimum Mechanical Specific Energy in Drilling  

SciTech Connect

Efficiency in drilling is measured by Mechanical Specific Energy (MSE). MSE is the measure of the amount of energy input required to remove a unit volume of rock, expressed in units of energy input divided by volume removed. It can be expressed mathematically in terms of controllable parameters; Weight on Bit, Torque, Rate of Penetration, and RPM. It is well documented that minimizing MSE by optimizing controllable factors results in maximum Rate of Penetration. Current methods for computing MSE make it possible to minimize MSE in the field only through a trial-and-error process. This work makes it possible to compute the optimum drilling parameters that result in minimum MSE. The parameters that have been traditionally used to compute MSE are interdependent. Mathematical relationships between the parameters were established, and the conventional MSE equation was rewritten in terms of a single parameter, Weight on Bit, establishing a form that can be minimized mathematically. Once the optimum Weight on Bit was determined, the interdependent relationship that Weight on Bit has with Torque and Penetration per Revolution was used to determine optimum values for those parameters for a given drilling situation. The improved method was validated through laboratory experimentation and analysis of published data. Two rock types were subjected to four treatments each, and drilled in a controlled laboratory environment. The method was applied in each case, and the optimum parameters for minimum MSE were computed. The method demonstrated an accurate means to determine optimum drilling parameters of Weight on Bit, Torque, and Penetration per Revolution. A unique application of micro-cracking is also presented, which demonstrates that rock failure ahead of the bit is related to axial force more than to rotation speed.

Hamrick, Todd

2011-05-25T23:59:59.000Z

348

Windows for energy efficient buildings  

SciTech Connect

Information is compiled and reviewed on energy efficient windows. The status, support organization, and descriptions of some research, development, demonstration, and applications program of energy efficient windows are presented. Information about contract opportunities and recently awarded contracts is included. New products, materials, components, patents, and legislation are summarized. Information on industry organizations, literature, publications, and reports is included. A matrix of numerical performance data of window thermal barriers is presented. (MCW)

1980-01-01T23:59:59.000Z

349

Energy Efficiency Demonstration: Executive Summary  

Science Conference Proceedings (OSTI)

The Energy Efficiency Demonstration was a field-performance assessment of emerging, efficient end-use technologies, deployed with extensive measurement instrumentation at multiple sites throughout the United States. EPRI collaborated with fourteen utilities spread throughout the United States. The selected technologies were known to have the potential to significantly reduce energy consumption in residential and commercial applications. The technologies demonstrated were: light emitting diode (LED) ...

2013-03-25T23:59:59.000Z

350

Energy Efficiency Demonstration Final Report  

Science Conference Proceedings (OSTI)

The Energy Efficiency Demonstration was a field-performance assessment of emerging, efficient end-use technologies, deployed with extensive measurement instrumentation at multiple sites throughout the United States. EPRI collaborated with fourteen utilities spread throughout the United States. The selected technologies were known to have the potential to significantly reduce energy consumption in residential and commercial applications. The technologies demonstrated were: light emitting diode (LED) ...

2012-11-19T23:59:59.000Z

351

The Total Cost and Measured Performance of Utility-Sponsored...  

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

The Total Cost and Measured Performance of Utility-Sponsored Energy Efficiency Programs Title The Total Cost and Measured Performance of Utility-Sponsored Energy Efficiency...

352

San Isabel Electric Association - Residential Energy Efficiency Rebate  

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

San Isabel Electric Association - Residential Energy Efficiency San Isabel Electric Association - Residential Energy Efficiency Rebate Program San Isabel Electric Association - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Appliances & Electronics Water Heating Program Info State Colorado Program Type Utility Rebate Program Rebate Amount Marathon Water Heaters: $175 Marathon Water Heaters w/ SIEA Load Control Program: $425 Electric Water Heater (minimum 30 gallon): $100 Washers: $80 Dryer w/ Moisture Sensor: $50 Dishwashers: $60 Refrigerators: $90 Freezers: $90 ETS Room Units: $72 - $180 ETS Furnaces: $432 - $768 Provider San Isabel Electric Association San Isabel Electric Association (SIEA) provides incentives for its residential customers to install energy efficient equipment. Rebates are

353

JEA - Commercial Energy Efficiency Rebate Program | Department of Energy  

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

JEA - Commercial Energy Efficiency Rebate Program JEA - Commercial Energy Efficiency Rebate Program JEA - Commercial Energy Efficiency Rebate Program < Back Eligibility Commercial Industrial Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Home Weatherization Construction Commercial Weatherization Design & Remodeling Other Heat Pumps Heating Commercial Lighting Lighting Insulation Water Heating Maximum Rebate Custom: Rebates capped at 50% of cost with a 2.0 year payback General/Custom: $300,000 per customer per program year Program Info State Florida Program Type Utility Rebate Program Rebate Amount Chillers: $5/ton (additional rebates available for units that exceed minimum efficiency requirement) Three Phase AC: $25 - $40/ton Three Phase Heat Pump: $20 - $30/ton

354

Tri-County Electric Cooperative - Energy Efficient Water Heater Rebate  

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

Tri-County Electric Cooperative - Energy Efficient Water Heater Tri-County Electric Cooperative - Energy Efficient Water Heater Rebate Program Tri-County Electric Cooperative - Energy Efficient Water Heater Rebate Program < Back Eligibility Commercial Residential Savings Category Appliances & Electronics Water Heating Program Info State Texas Program Type Utility Rebate Program Rebate Amount $75 Provider Tri-County Electric Cooperative Tri-County Electric Cooperative offers a $75 rebate on the purchase of energy-efficient electric water heaters. The rebate is valid for new or replacement units which have an Energy Factor Rating of 0.90 or higher. The minimum tank size is 40 gallons, with a minimum 4,500 watt heating element. For validation purposes, a copy of the sales or installation receipt must accompany the [http://www.tcectexas.com/Forms/water%20heater%20rebate%20form.pdf

355

Louisville Gas and Electric - Residential Energy Efficiency Rebate Program  

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

Louisville Gas and Electric - Residential Energy Efficiency Rebate Louisville Gas and Electric - Residential Energy Efficiency Rebate Program (Kentucky) Louisville Gas and Electric - Residential Energy Efficiency Rebate Program (Kentucky) < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Home Weatherization Construction Commercial Weatherization Design & Remodeling Heat Pumps Water Heating Windows, Doors, & Skylights Program Info State Kentucky Program Type Utility Rebate Program Rebate Amount Heat Pump Water Heater: $300 Refrigerator: $100 Freezer: $50 Clothes Washer: $75 Dishwasher: $50 Window Film: 50% of material cost, up to $200 Central AC: $100, plus $100 for each SEER above minimum federal high efficiency standard Air-Source Heat Pump: $100, plus $100 for each SEER above minimum federal

356

Kentucky Utilities Company - Residential Energy Efficiency Rebate Program  

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

Kentucky Utilities Company - Residential Energy Efficiency Rebate Kentucky Utilities Company - Residential Energy Efficiency Rebate Program (Kentucky) Kentucky Utilities Company - Residential Energy Efficiency Rebate Program (Kentucky) < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Home Weatherization Construction Commercial Weatherization Design & Remodeling Heat Pumps Water Heating Windows, Doors, & Skylights Program Info State Kentucky Program Type Utility Rebate Program Rebate Amount Heat Pump Water Heater: $300 Refrigerator: $100 Freezer: $50 Clothes Washer: $75 Dishwasher: $50 Window Film: 50% of material cost, up to $200 Central AC: $100, plus $100 for each SEER above minimum federal high efficiency standard Air-Source Heat Pump: $100, plus $100 for each SEER above minimum federal

357

Energy Efficient Computing at NERSC  

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

Green Flash Exascale Computing Performance & Monitoring Tools Petascale Initiative Science Gateway Development Storage and I/O Technologies Design Forward Home » R & D » Energy Efficient Computing Energy Efficient Computing Energy Monitoring to Improve Efficiency NERSC has instrumented its machine room with state-of-the-art wireless monitoring technology from SynapSense. To date, the center has installed 834 sensors, which gather information on variables important to machine room operation, including air temperature, pressure, and humidity. The sensors signal temperature changes and NERSC has already seen benefits in center reliability. For example, after cabinets of a large, decommissioned system were shut down and removed, cold air pockets developed near

358

International Comparative Analysis of Appliance Efficiency Standards &  

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

International Comparative Analysis of Appliance Efficiency Standards & International Comparative Analysis of Appliance Efficiency Standards & Labeling Programs: Implications for China Title International Comparative Analysis of Appliance Efficiency Standards & Labeling Programs: Implications for China Publication Type Conference Proceedings Year of Publication 2012 Authors Zhou, Nan, Nina Zheng, David Fridley, and John Romankiewicz Conference Name ACEEE Summer Study on Energy Efficiency in Buildings Date Published 06/2012 Publisher American Council for an Energy-Efficient Economy Keywords appliance, china, china energy, china energy group, energy analysis and environmental impacts department, energy efficiency, policy studies, standards and labeling program Abstract As a growing consumer of household appliances, lighting and electronic products, China has seen a steady rise in residential electricity use with 13% average annual growth since the 1980s. Over the last twenty years, China has implemented a series of new minimum energy performance standards (MEPS) and mandatory and voluntary energy labels to improve appliance energy efficiency. As China begins planning for the next phase of standards and labeling (S&L) program development under the 12th Five Year Plan, an evaluation of recent program developments and future directions is undertaken by drawing upon the experiences and lessons learned of key international S&L program development. Specifically, this study provides in-depth review and comparative analysis of the development and recent advancements in the U.S. MEPS and Energy Star, Australia MEPS and Energy Label, European Union MEPS and Eco-Design Label and Japanese Top Runner programs with China's S&L program. The international comparative analysis focuses on key elements of S&L development including stakeholder participation, program resources, data collection and availability, analytical methods, as well as program implementation and enforcement mechanisms. This study finds that adequate program resources from national and local levels, wide-ranging stakeholder participation, incorporation of various technical and economic analyses in standards development, and program impact evaluations are key features of successful S&L programs and have room for improvement in China. At the same time, however, China has become more proactive than some international programs in areas such as launching check-testing, laboratory round-robin testing and compliance verification for S&L programs.

359

Welcome to the Efficient Windows Collaborative  

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

Assessing Window Replacement Options Assessing Window Replacement Options What are the benefits of energy-efficient windows? Energy & Cost Savings Improved Comfort Less Condensation Increased Light & View Reduced Fading Lower HVAC Costs How is window performance measured? U-factor Solar Heat Gain Coefficient Visible Transmittance Air Leakage Condensation Resistance Are there financing and incentive programs? Overview of Utility and State Programs Performance Standards Energy Rating Programs Building America Program Documents Measure Guideline: Energy-Efficient Window Performance and Selection exit disclaimer Measure Guideline: Wood Window Repair, Rehabilitation, and Replacement exit disclaimer Whether you would like to improve the energy performance of your existing windows or replace them with new energy-efficient windows, several options are available. An energy audit can help you identify good strategies for more efficient windows and a more efficient house. Whichever energy efficiency measures you consider, the federal government as well as state, local, and utility programs may offer financing help or weatherization assistance.

360

Berkeley Lab Sheds Light on Improving Solar Cell Efficiency  

DOE Green Energy (OSTI)

Typical manufacturing methods produce solar cells with an efficiency of 12-15%; and 14% efficiency is the bare minimum for achieving a profit. In work performed at the Ernest Orlando Lawrence Berkeley National Laboratory (Berkeley, CA, 5 10-486-577 1)--a US Department of Energy national laboratory that conducts unclassified scientific research and is managed by the University of California--scientist Scott McHugo has obtained keen insights into the impaired performance of solar cells manufactured from polycrystalline silicon. The solar cell market is potentially vast, according to Berkeley Lab. Lightweight solar panels are highly beneficial for providing electrical power to remote locations in developing nations, since there is no need to build transmission lines or truck-in generator fuel. Moreover, industrial nations confronted with diminishing resources have active programs aimed at producing improved, less expensive solar cells. 'In a solar cell, there is a junction between p-type silicon and an n-type layer, such as diffused-in phosphorous', explained McHugo, who is now with Berkeley Lab's Accelerator and Fusion Research Division. 'When sunlight is absorbed, it frees electrons, which start migrating in a random-walk fashion toward that junction. If the electrons make it to the junction; they contribute to the cell's output of electric current. Often, however, before they reach the junction, they recombine at specific sites in the crystal' (and, therefore, cannot contribute to current output). McHugo scrutinized a map of a silicon wafer in which sites of high recombination appeared as dark regions. Previously, researchers had shown that such phenomena occurred not primarily at grain boundaries in the polycrystalline material, as might be expected, but more often at dislocations in the crystal. However, the dislocations themselves were not the problem. Using a unique heat treatment technique, McHugo performed electrical measurements to investigate the material at the dislocations. He was purportedly the first to show that they were 'decorated' with iron.

Lawrence Berkeley National Laboratory

2007-07-20T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

An assessment of the performance of closed cycles with and without heat rejection at cryogenic temperatures  

Science Conference Proceedings (OSTI)

This paper presents optimized cycle performance that can be obtained with systems including a closed cycle gas turbine (CCGT). The influence of maximum temperature, minimum temperature, and recuperator effectiveness on cycle performance is illustrated. Several power-plant arrangements are analyzed and compared based on thermodynamic performance (thermal efficiency and specific work); enabling technologies (available at present); and developing technologies (available in the near term of future). The work includes the effects of utilization of high temperature ceramic heat exchangers and of coupling of CCGT systems with plants vaporizing liquid hydrogen (LH{sub 2}) or liquefied natural gas (LNG). Given the versatility of energy addition and rejection sources that can be utilized in closed gas-cycle systems, the thermodynamic performance of power plants shown in this paper indicate the remarkable capabilities and possibilities for closed gas-cycle systems.

Agazzani, A.; Massardo, A.F. [Univ. of Genova (Italy). Ist. di Macchine e Sistemi Energetici; Korakianitis, T. [Washington Univ., St. Louis, MO (United States)

1999-07-01T23:59:59.000Z

362

Efficient universal blind computation  

E-Print Network (OSTI)

We give a cheat sensitive protocol for blind universal quantum computation that is efficient in terms of computational and communication resources: it allows one party to perform an arbitrary computation on a second party's quantum computer without revealing either which computation is performed, or its input and output. The first party's computational capabilities can be extremely limited: she must only be able to create and measure single-qubit superposition states. The second party is not required to use measurement-based quantum computation. The protocol requires the (optimal) exchange of O(J log(N)) single-qubit states, where J is the computational depth and N is the number of qubits needed for the computation.

Vittorio Giovannetti; Lorenzo Maccone; Tomoyuki Morimae; Terry G. Rudolph

2013-06-12T23:59:59.000Z

363

Energy-efficient broadcasting in all-wireless networks  

Science Conference Proceedings (OSTI)

In all-wireless networks, minimizing energy consumption is crucial as in most cases the nodes are battery-operated. We focus on the problem of power-optimal broadcast, for which it is well known that the broadcast nature of radio transmissions can be ... Keywords: approximation algorithms, complexity theory, energy efficiency, minimum-energy networks, wireless ad hoc networks

Mario ?agalj; Jean-Pierre Hubaux; Christian C. Enz

2005-01-01T23:59:59.000Z

364

Minimum power allocation for cooperative routing in multihop wireless networks  

Science Conference Proceedings (OSTI)

Due to the limited energy supplies of nodes, in many applications like wireless sensor networks, energy-efficiency is crucial for extending the lifetime of these networks. We study the routing problem for multihop wireless ad hoc networks based on cooperative ...

Behrouz Maham; Are Hjørungnes

2009-03-01T23:59:59.000Z

365

Top 10 Energy Efficiency Opportunities  

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

Top 10 Energy Efficiency Top 10 Energy Efficiency Opportunities Federal Utility Partnership Working Group San Francisco, 5/22/2013 Siva Sethuraman Customer Energy Solutions PG&E 2 Whole Building A comprehensive, performance-based approach to achieving 15+% energy savings in existing commercial buildings - quantification of energy use baselines and estimate savings at the whole building level leveraging the power of interval meter data. Behavioral Operational Retrofit Types of Energy Savings * Simplified, integrated offering * Bigger incentives tied to performance * Flexibility to pursue a range of measures overtime * Transparent and credible bill savings Baseline Analytics, Examples 3 Small Commercial EMS * Energy management system (EMS) products that offer integrated

366

Energy Efficiency Fund (Electric) - Home Energy Solutions and...  

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

Electric) - Home Energy Solutions and Performance Programs Energy Efficiency Fund (Electric) - Home Energy Solutions and Performance Programs Eligibility Low-Income Residential...

367

An energy equivalency analysis of trade-offs between thermal efficiency and standby loss requirements for commercial gas service water heaters  

SciTech Connect

The American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE) Standing Standard Project Committee 90.1 has approved an addendum (90.lb) to ASHRAE/IES Standard 90.1-1989. The addendum specifies an increase in the minimum thermal efficiency requirement (from 77% to 78%), accompanied by an easing of the standby loss requirements, for commercial gas-fired service water heaters. The Pacific Northwest Laboratory performed an energy equivalency analysis to assess the impact of trade-offs between the improved thermal efficiency and the less stringent standby loss requirements. The analysis objective was to estimate whether the energy savings during firing would offset the increased energy losses during standby periods. The primary focus of this report is to summarize the major results of the analysis and provide a recommendation for minimum energy-efficiency commercial gas-fired service water heaters. Limitations to the availability of detailed performance and energy-use data for these commercial water heaters are also pointed out.

Somasundaram, S.; Jarnagin, R.E.; Keller, J.M.; Schliesing, J.S.

1992-06-01T23:59:59.000Z

368

Minimum error discrimination between similarity-transformed quantum states  

Science Conference Proceedings (OSTI)

Using the well-known necessary and sufficient conditions for minimum error discrimination (MED), we extract an equivalent form for the MED conditions. In fact, by replacing the inequalities corresponding to the MED conditions with an equivalent but more suitable and convenient identity, the problem of mixed state discrimination with optimal success probability is solved. Moreover, we show that the mentioned optimality conditions can be viewed as a Helstrom family of ensembles under some circumstances. Using the given identity, MED between N similarity transformed equiprobable quantum states is investigated. In the case that the unitary operators are generating a set of irreducible representation, the optimal set of measurements and corresponding maximum success probability of discrimination can be determined precisely. In particular, it is shown that for equiprobable pure states, the optimal measurement strategy is the square-root measurement (SRM), whereas for the mixed states, SRM is not optimal. In the case that the unitary operators are reducible, there is no closed-form formula in the general case, but the procedure can be applied in each case in accordance to that case. Finally, we give the maximum success probability of optimal discrimination for some important examples of mixed quantum states, such as generalized Bloch sphere m-qubit states, spin-j states, particular nonsymmetric qudit states, etc.

Jafarizadeh, M. A. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics, Tehran 19395-1795 (Iran, Islamic Republic of); Research Institute for Fundamental Sciences, Tabriz 51664 (Iran, Islamic Republic of); Sufiani, R. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics, Tehran 19395-1795 (Iran, Islamic Republic of); Mazhari Khiavi, Y. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of)

2011-07-15T23:59:59.000Z

369

India’s Credible Minimum Deterrence A Decade Later  

E-Print Network (OSTI)

Deterrence in the most conventional sense implies the making of military threats in order to prevent an adversary from taking aggressive actions (Buzan 1987). According to Barry Buzan (1987: 136), deterrence as a concept purports to stop an unwanted action by the adversary before they occur and encompasses both denial and the possibility of retaliation. The introduction of nuclear weapons into this complex dynamic of deterrence does not stabilise the crisis situation, as conventional wisdom suggests, but makes it even more threatening. The core of nuclear deterrence involves convincing the adversary that the cost of an undesirable action is more than the rewards. This requires a comprehensive understanding of not only the adversary’s motives, decision-making processes and objectives, but also one’s own capability to influence the calculus of costs and benefits that an adversary attaches to his own belligerence. Therefore, nuclear deterrence also takes into account the credibility of one’s own nuclear threat that is aimed at convincing the adversary that his belligerence will be ‘punished ’ by unacceptable damage through nuclear means. It is in the wake of this that India evolved its own nuclear doctrine which seeks to uphold the notion of credible minimum deterrence.

Tanvi Kulkarni; Alankrita Sinha

2011-01-01T23:59:59.000Z

370

Best Practice Upgrades for New Energy Efficient Homes in Hot and Humid Climates  

E-Print Network (OSTI)

The EPA's ENERGY STAR Homes program is a national voluntary program that promotes the construction of new homes that are 30% more efficient than the Model Energy Code. Accordingly, with the Home Energy Rating System (HERS) scoring system, ENERGY STAR Homes must achieve a score of at least an 86. This performance-based compliance requirement enables builders to be creative in the specific energy efficiency features that they build in their new homes. However, builders often want to know what the minimum energy efficiency features of an ENERGY STAR Home would likely be - before they joined the program. To solve this problem, EPA developed the Builder Option Packages (BOPs). BOPS are currently used as marketing tools to communicate the typical energy efficiency features of ENERGY STAR Homes. This paper will focus on the hot and humid portion of the US. and explain the technical methodology used to develop the BOPS as well as the energy use and HERS scores obtained for the various configurations analyzed.

Meisegeier, D.; Hall, J.

2000-01-01T23:59:59.000Z

371

Improve energy performance | ENERGY STAR  

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

track, and benchmark Improve energy performance ENERGY STAR industrial partnership Energy guides Energy efficiency and air regulation Plant energy auditing Industrial...

372

The Impact of Minimum Quality Standards on Firm Entry, Exit and Product Quality: The Case of the Child Care Market  

E-Print Network (OSTI)

A Theory of Minimum Standards,” Journal of Politi- calto Minimum Quality Standards Regulation,” NBER working paperDuopoly and Quality Standards,” European Economic Review,

Hotz, V. Joseph; Xiao, Mo

2005-01-01T23:59:59.000Z

373

Efficient data IO for a Parallel Global Cloud Resolving Model  

Science Conference Proceedings (OSTI)

Execution of a Global Cloud Resolving Model (GCRM) at target resolutions of 2-4 km will generate, at a minimum, 10s of Gigabytes of data per variable per snapshot. Writing this data to disk without creating a serious bottleneck in the execution of the GCRM code while also supporting efficient post-execution data analysis is a significant challenge. This paper discusses an Input/Output (IO) application programmer interface (API) for the GCRM that efficiently moves data from the model to disk while maintaining support for community standard formats, avoiding the creation of very large numbers of files, and supporting efficient analysis. Several aspects of the API will be discussed in detail. First, we discuss the output data layout which linearizes the data in a consistent way that is independent of the number of processors used to run the simulation and provides a convenient format for subsequent analyses of the data. Second, we discuss the flexible API interface that enables modelers to easily add variables to the output stream by specifying where in the GCRM code these variables are located and to flexibly configure the choice of outputs and distribution of data across files. The flexibility of the API is designed to allow model developers to add new data fields to the output as the model develops and new physics is added and also provides a mechanism for allowing users of the GCRM code itself to adjust the output frequency and the number of fields written depending on the needs of individual calculations. Third, we describe the mapping to the NetCDF data model with an emphasis on the grid description. Fourth, we describe our messaging algorithms and IO aggregation strategies that are used to achieve high bandwidth while simultaneously writing concurrently from many processors to shared files. We conclude with initial performance results.

Palmer, Bruce J.; Koontz, Annette S.; Schuchardt, Karen L.; Heikes, Ross P.; Randall, David A.

2011-11-26T23:59:59.000Z

374

Energy efficient data centers  

E-Print Network (OSTI)

Sealing floor openings can improve efficiency by directing airSealing floor openings can improve efficiency by directing airSealing floor openings can improve efficiency by directing air

Tschudi, William; Xu, Tengfang; Sartor, Dale; Koomey, Jon; Nordman, Bruce; Sezgen, Osman

2004-01-01T23:59:59.000Z

375

Energy Efficiency Manual  

E-Print Network (OSTI)

Review: Energy Efficiency Manual By Donald R. WulfinghoffR. Energy Efficiency Manual. Wheaton, MD: Energy InstituteThe Energy Efficiency Manual offers up-to-date and practical

Weintraub, Irwin

2000-01-01T23:59:59.000Z

376

OPTIONS for ENERGY EFFICIENCY  

E-Print Network (OSTI)

OPTIONS for ENERGY EFFICIENCY in EXISTING BUILDINGS December 2005 CEC-400-2005-039-CMF;OPTIONS FOR ENERGY EFFICIENCY in EXISTING BUILDINGS COMMISSION REPORT TABLE OF CONTENTS EXECUTIVE SUMMARY ............................................................................iii California's Successful Energy Efficiency Programs

377

Guidelines for Energy Efficient Schools  

E-Print Network (OSTI)

Operational experience of several schools designed with energy efficiency as a design criteria is discussed in this paper. Actual monthly energy usage and cost are provided. Annual energy cost performance ($/ft^2-yr) and energy performance (BTU/FT^2-yr) of these example case study schools with flexible mechanical and electrical systems are compared to published design performance guidelines and similar schools constructed without energy efficiency as a design criteria. The authors have conducted energy studies of more than 400 schools which serve as a comparative data base range of performance. Of the schools compared, those with the lowest operating cost and energy usage employed flexible HVAC systems which inherently provided for control of electrical demand. The resulting electrical demand profile of most of theme case study schools were relatively constant throughout the year which is uncommon to most schools. The design approach employed to achieve lowar operating costs and inherent demand control is a hybrid HVAC system with a designed mixture or balance between electric and natural gas energy sources. The summary of this paper will compare operating cost performance, energy performance, HVAC system type of the case study schools, eight schools with water source heat pumps, and other data base schools with various other types of HVAC systems. Design guidelines for energy efficient schools are presented.

McClure, J. D.; Estes, J. M.; Bicknell, K. N.; Estes, M. C.

1988-01-01T23:59:59.000Z

378

Thermal Performance Analysis of a High-Mass Residential Building  

DOE Green Energy (OSTI)

Minimizing energy consumption in residential buildings using passive solar strategies almost always calls for the efficient use of massive building materials combined with solar gain control and adequate insulation. Using computerized simulation tools to understand the interactions among all the elements facilitates designing low-energy houses. Finally, the design team must feel confident that these tools are providing realistic results. The design team for the residential building described in this paper relied on computerized design tools to determine building envelope features that would maximize the energy performance [1]. Orientation, overhang dimensions, insulation amounts, window characteristics and other strategies were analyzed to optimize performance in the Pueblo, Colorado, climate. After construction, the actual performance of the house was monitored using both short-term and long-term monitoring approaches to verify the simulation results and document performance. Calibrated computer simulations showed that this house consumes 56% less energy than would a similar theoretical house constructed to meet the minimum residential energy code requirements. This paper discusses this high-mass house and compares the expected energy performance, based on the computer simulations, versus actual energy performance.

Smith, M.W.; Torcellini, P.A., Hayter, S.J.; Judkoff, R.

2001-01-30T23:59:59.000Z

379

A Minimum Assumption Tornado-Hazard Probability Model  

Science Conference Proceedings (OSTI)

One of the principle applications of climatological tornado data is in tornado-hazard assessment. To perform such a hazard-potential determination, historical tornado characteristics in either a regional or tom area are complied. A model is then ...

Joseph T. Schaefer; Donald L. Kelly; Robert F. Abbey

1986-12-01T23:59:59.000Z

380

Appliance Efficiency Standards  

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

Appliance Efficiency Standards Part 1 of 2 In the National Energy Policy Conservation Act (1978), Congress required DOE to set energy-efficiency standards for 13 residential...

Note: This page contains sample records for the topic "minimum efficiency performance" 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

What's Energy Efficiency?  

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

Why is energy efficiency the most abundant, cheapest way to reduce greenhouse gas (GHG) emissions? Anywhere energy is used, there are opportunities to increase efficiency. In most...

382

What's Energy Efficiency?  

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

Berkeley Laboratory and Energy Efficiency Whether you know it or not, the chances are that you've encountered energy-efficient technology developed by Lawrence Berkeley National...

383

Efficiency of Electric Motors  

Science Conference Proceedings (OSTI)

... the EEM program addresses testing the efficiency of electric ... 1 of Canadian Standards Association (CSA) Standard C390, 'Energy Efficient Test ...

2013-08-16T23:59:59.000Z

384

What's Energy Efficiency?  

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

Links Here are some other organizations that study or otherwise support energy efficiency. Find out more about efficiency's potential to reduce GHG emissions, increase economic...

385

Buildings Performance Database Helps Building Owners, Investors...  

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

Buildings Performance Database Helps Building Owners, Investors Evaluate Energy Efficient Buildings Buildings Performance Database June 2013 A new database of building features and...

386

Geothermal heating retrofit at the Utah State Prison Minimum Security Facility. Final report, March 1979-January 1986  

DOE Green Energy (OSTI)

This report is a summary of progress and results of the Utah State Prison Geothermal Space Heating Project. Initiated in 1978 by the Utah State Energy Office and developed with assistance from DOE's Division of Geothermal and Hydropower Technologies PON program, final construction was completed in 1984. The completed system provides space and water heating for the State Prison's Minimum Security Facility. It consists of an artesian flowing geothermal well, plate heat exchangers, and underground distribution pipeline that connects to the existing hydronic heating system in the State Prison's Minimum Security Facility. Geothermal water disposal consists of a gravity drain line carrying spent geothermal water to a cooling pond which discharges into the Jordan River, approximately one mile from the well site. The system has been in operation for two years with mixed results. Continuing operation and maintenance problems have reduced the expected seasonal operation from 9 months per year to 3 months. Problems with the Minimum Security heating system have reduced the expected energy contribution by approximately 60%. To date the system has saved the prison approximately $18,060. The total expenditure including resource assessment and development, design, construction, performance verification, and reporting is approximately $827,558.

Not Available

1986-01-01T23:59:59.000Z

387

Thermal Performance of the LHC Short Straight Section Cryostat  

E-Print Network (OSTI)

The LHC Short Straight Section (SSS) cryostat houses and thermally protects in vacuum the cold mass which contains a twin-aperture superconducting quadrupole magnet and superconducting corrector magnets operating at 1.9 K in superfluid helium. In addition to mechanical requirements, the cryostat is designed to minimize the heat in-leak from the ambient temperature to the cold mass. Mechanical components linking the cold mass to the vacuum vessel such as support posts and an insulation vacuum barrier are designed to have minimum heat conductivity with efficient thermalisations for heat interception. Heat in-leak by radiation is reduced by employing multilayer insulation wrapped around the cold mass and an actively cooled aluminium thermal shield. The recent commissioning and operation of two SSS prototypes in the LHC Test String 2 have given a first experimental validation of the thermal performance of the SSS cryostat in nominal operating conditions. Temperature sensors mounted in critical locations provide a...

Bergot, J B; Nielsen, L; Parma, Vittorio; Rohmig, P; Roy, E

2002-01-01T23:59:59.000Z

388

Minimum Cost Flow Problems with Value-at-Risk and Conditional ...  

E-Print Network (OSTI)

Stochastic minimum cost flow (SMCF) problems have been studied for applica- tions involving random ...... approach to stochastic programming of heating oil.

389

Appliance Efficiency Standards and Price Discrimination  

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

Appliance Efficiency Standards and Price Discrimination Appliance Efficiency Standards and Price Discrimination Title Appliance Efficiency Standards and Price Discrimination Publication Type Report LBNL Report Number LBNL-6283E Year of Publication 2013 Authors Spurlock, Anna C. Date Published 05/2013 Keywords EES-EG Abstract I explore the effects of two simultaneous changes in minimum energy efficiency and ENERGY STAR standards for clothes washers. Adapting the Mussa and Rosen (1978) and Ronnen (1991) second-degree price discrimination model, I demonstrate that clothes washer prices and menus adjusted to the new standards in patterns consistent with a market in which firms had been price discriminating. In particular, I show evidence of discontinuous price drops at the time the standards were imposed, driven largely by mid-low efficiency segments of the market. The price discrimination model predicts this result. On the other hand, in a perfectly competition market, prices should increase for these market segments. Additionally, new models proliferated in the highest efficiency market segment following the standard changes. Finally, I show that firms appeared to use different adaptation strategies at the two instances of the standards

390

NREL Solves Residential Window Air Conditioner Performance Limitations (Fact Sheet)  

SciTech Connect

Comprehensive performance tests lead to enhanced modeling capability and affordable methods to increase energy efficiency.

Not Available

2013-05-01T23:59:59.000Z

391

Energy Performance Comparison of Heating and Air Conditioning Systems for Multi-Family Residential Buildings  

SciTech Connect

The type of heating, ventilation and air conditioning (HVAC) system has a large impact on the heating and cooling energy consumption in multifamily residential buildings. This paper compares the energy performance of three HVAC systems: a direct expansion (DX) split system, a split air source heat pump (ASHP) system, and a closed-loop water source heat pump (WSHP) system with a boiler and an evaporative fluid cooler as the central heating and cooling source. All three systems use gas furnace for heating or heating backup. The comparison is made in a number of scenarios including different climate conditions, system operation schemes and applicable building codes. It is found that with the minimum code-compliant equipment efficiency, ASHP performs the best among all scenarios except in extremely code climates. WSHP tends to perform better than the split DX system in cold climates but worse in hot climates.

Wang, Weimin; Zhang, Jian; Jiang, Wei; Liu, Bing

2011-07-31T23:59:59.000Z

392

Efficiency Maine Multifamily Efficiency Program (Maine) | Open...  

Open Energy Info (EERE)

MeasuresWhole Building Active Incentive Yes Implementing Sector StateTerritory Energy Category Energy Efficiency Incentive Programs Amount Upon approval of Energy Reduction...

393

Energy Efficiency Financing  

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

D. Peterson, President and CEO D. Peterson, President and CEO Center for Climate Strategies Climate Economy Energy May 6, 2011 www.climatestrategies.us 2 STATE CLIMATE PLANS JOBS, INCOME, GSP May 6, 2011 www.climatestrategies.us 3 North Carolina Macroeconomic (Income) Impact Analysis of Residential, Commercial and Industrial EE Options State Climate Action Plans Include DSM, Building Codes, Appliance Standards, and Other EE Programs  Community Energy Loan Program  State Agency Loan Program (SALP)  Maryland Strategic Energy Investment Fund  Green Building Income Tax Credit  Change a Light program  Home Performance with ENERGY STAR  Weatherization Program low income energy efficiency improvements  Property Assessed Clean Energy (PACE) financing  Renewable Energy Production Tax Credit

394

SourceGas - Commercial Energy Efficiency Rebate Program | Department of  

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

Commercial Energy Efficiency Rebate Program Commercial Energy Efficiency Rebate Program SourceGas - Commercial Energy Efficiency Rebate Program < Back Eligibility Commercial Industrial Savings Category Heating & Cooling Commercial Heating & Cooling Heating Commercial Weatherization Manufacturing Appliances & Electronics Water Heating Maximum Rebate Hot Water Insulation/Infiltration Measures: minimum purchase of $40 Programmable Thermostats: 2 per account Program Info State Colorado Program Type Utility Rebate Program Rebate Amount '''Small Commercial''' Furnace: $200 - $300 Boiler: $150 Proper Sizing of Boiler/Furnace: $50 Hot Water Heater (Tank): $50 Hot Water Heater (Tankless): $300 Programmable Thermostat: $25 Hot Water Insulation/Infiltration Measures: $25 Integrated Space/Water Heater: $300

395

Loveland Water and Power - Commercial and Industrial Energy Efficiency  

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

Commercial and Industrial Energy Commercial and Industrial Energy Efficiency Rebate Program Loveland Water and Power - Commercial and Industrial Energy Efficiency Rebate Program < Back Eligibility Commercial Industrial Savings Category Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Cooling Manufacturing Other Heat Pumps Appliances & Electronics Commercial Lighting Lighting Windows, Doors, & Skylights Maximum Rebate $50,000 per year Program Info State Colorado Program Type Utility Rebate Program Rebate Amount Lighting: See Program Website Cooling Efficiency Room AC: $50 - $110/ton, plus $3.50 - $5.00 for each 0.1 above minimum SEER, IEER, or EER Economizer: $250 Motion Sensor Controls: $75 Building Envelope Window Replacement: $1.50/sq. ft.

396

Tillamook County PUD - Residential Energy Efficiency Rebate Program |  

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

Tillamook County PUD - Residential Energy Efficiency Rebate Program Tillamook County PUD - Residential Energy Efficiency Rebate Program Tillamook County PUD - Residential Energy Efficiency Rebate Program < Back Eligibility Low-Income Residential Residential Savings Category Home Weatherization Commercial Weatherization Appliances & Electronics Sealing Your Home Ventilation Manufacturing Heating & Cooling Commercial Heating & Cooling Heat Pumps Commercial Lighting Lighting Water Heating Windows, Doors, & Skylights Program Info Expiration Date Rebate program is a limited time offer based on availability of funds and is subject to change without notice. State Oregon Program Type Utility Rebate Program Rebate Amount Water Heaters (minimum of a ten-year warranty): $25 Clothes Washers: $70 Refrigerators/Freezers: $15 Dishwashers: $25

397

SourceGas - Residential Energy Efficiency Rebate Program | Department of  

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

Residential Energy Efficiency Rebate Program Residential Energy Efficiency Rebate Program SourceGas - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heating Other Commercial Weatherization Manufacturing Appliances & Electronics Water Heating Maximum Rebate Hot Water Insulation/Infiltration Measures: minimum purchase of $40 Programmable Thermostats: 2 per account Insulation/Air Sealing: $300 Program Info State Colorado Program Type Utility Rebate Program Rebate Amount Furnace: $200 - $300 Boiler: $150 Proper Sizing of Boiler/Furnace: $50 Hot Water Heater (Tank): $50 Hot Water Heater (Tankless): $300 Programmable Thermostat: $25 Hot Water Insulation/Infiltration Measures: $25 Insulation/Air Sealing: 30% of cost

398

Atmos Energy - Energy Efficiency Rebate Program | Department of Energy  

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

Atmos Energy - Energy Efficiency Rebate Program Atmos Energy - Energy Efficiency Rebate Program Atmos Energy - Energy Efficiency Rebate Program < Back Eligibility Commercial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Sealing Your Home Ventilation Manufacturing Appliances & Electronics Water Heating Maximum Rebate Miscellaneous Hot Water Insulation and Infiltration Measures: minimum purchase of $40 Programmable Thermostats: 2/account Program Info State Colorado Program Type Utility Rebate Program Rebate Amount '''Residential and Small Commercial''' Furnace: $200-$300 Boiler: $150 Proper Sizing of Furnaces/Boilers: $50 Storage Water Heater: $50 Tankless Water Heater: $300 Programmable Thermostat: $25 Furnace Maintenance: $40

399

Energy efficient data centers  

E-Print Network (OSTI)

cogeneration can improve reliability and increase chiller efficiency (by using waste heat) for larger data centers.

Tschudi, William; Xu, Tengfang; Sartor, Dale; Koomey, Jon; Nordman, Bruce; Sezgen, Osman

2004-01-01T23:59:59.000Z

400

Industrial Energy Efficiency Assessments  

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

Energy Efficiency Energy Efficiency Assessments Lynn Price Staff Scientist China Energy Group Energy Analysis Department Environmental Energy Technologies Division Lawrence Berkeley National Laboratory Industrial Energy Efficiency Assessments - Definition and overview of key components - International experience - Chinese situation and recommendations - US-China collaboration Industrial Energy Efficiency Assessments - Analysis of the use of energy and potential for energy efficiency in an industrial facility * Current situation * Recommendations for improving energy efficiency * Cost-benefit analysis of recommended options * An action plan for realizing potential savings Types of Industrial Energy Efficiency Assessments - Preliminary or walk-through - Detailed or diagnostic Audit criteria

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Polynomial-time algorithms for minimum energy scheduling  

Science Conference Proceedings (OSTI)

The aim of power management policies is to reduce the amount of energy consumed by computer systems while maintaining a satisfactory level of performance. One common method for saving energy is to simply suspend the system during idle times. No energy ... Keywords: Job scheduling, dynamic programming, minimizing energy consumption

Philippe Baptiste; Marek Chrobak; Christoph Dürr

2012-07-01T23:59:59.000Z

402

Minimum Energy Ventilation for Fast Food Restaurant Kitchens  

Science Conference Proceedings (OSTI)

Cooking equipment exhaust systems have a significant impact on the energy consumption of fast food restaurants. This research investigated issues that relate to the energy performance of commercial kitchen ventilation systems and demonstrated that significant energy and cost savings can be achieved by reducing ventilation rates.

1996-10-30T23:59:59.000Z

403

TV Energy Consumption Trends and Energy-Efficiency Improvement Options  

Science Conference Proceedings (OSTI)

The SEAD initiative aims to transform the global market by increasing the penetration of highly efficient equipment and appliances. SEAD is a government initiative whose activities and projects engage the private sector to realize the large global energy savings potential from improved appliance and equipment efficiency. SEAD seeks to enable high-level global action by informing the Clean Energy Ministerial dialogue as one of the initiatives in the Global Energy Efficiency Challenge. In keeping with its goal of achieving global energy savings through efficiency, SEAD was approved as a task within the International Partnership for Energy Efficiency Cooperation (IPEEC) in January 2010. SEAD partners work together in voluntary activities to: (1) ?raise the efficiency ceiling? by pulling super-efficient appliances and equipment into the market through cooperation on measures like incentives, procurement, awards, and research and development (R&D) investments; (2) ?raise the efficiency floor? by working together to bolster national or regional policies like minimum efficiency standards; and (3) ?strengthen the efficiency foundations? of programs by coordinating technical work to support these activities. Although not all SEAD partners may decide to participate in every SEAD activity, SEAD partners have agreed to engage actively in their particular areas of interest through commitment of financing, staff, consultant experts, and other resources. In addition, all SEAD partners are committed to share information, e.g., on implementation schedules for and the technical detail of minimum efficiency standards and other efficiency programs. Information collected and created through SEAD activities will be shared among all SEAD partners and, to the extent appropriate, with the global public.As of April 2011, the governments participating in SEAD are: Australia, Brazil, Canada, the European Commission, France, Germany, India, Japan, Korea, Mexico, Russia, South Africa, Sweden, the United Arab Emirates, the United Kingdom, and the United States. More information on SEAD is available from its website at http://www.superefficient.org/.

Park, Won Young; Phadke, Amol; Shah, Nihar; Letschert, Virginie

2011-07-01T23:59:59.000Z

404

Transformer Efficiency Assessment - Okinawa, Japan  

Science Conference Proceedings (OSTI)

The US Army Engineering & Support Center, Huntsville (USAESCH), and the US Marine Corps Base (MCB), Okinawa, Japan retained Idaho National Laboratory (INL) to conduct a Transformer Efficiency Assessment of “key” transformers located at multiple military bases in Okinawa, Japan. The purpose of this assessment is to support the Marine Corps Base, Okinawa in evaluating medium voltage distribution transformers for potential efficiency upgrades. The original scope of work included the MCB providing actual transformer nameplate data, manufacturer’s factory test sheets, electrical system data (kWh), demand data (kWd), power factor data, and electricity cost data. Unfortunately, the MCB’s actual data is not available and therefore making it necessary to de-scope the original assessment. Note: Any similar nameplate data, photos of similar transformer nameplates, and basic electrical details from one-line drawings (provided by MCB) are not a replacement for actual load loss test data. It is recommended that load measurements are performed on the high and low sides of transformers to better quantify actual load losses, demand data, and power factor data. We also recommend that actual data, when available, be inserted by MCB Okinawa where assumptions have been made and then the LCC analysis updated. This report covers a generalized assessment of modern U.S. transformers in a three level efficiency category, Low-Level efficiency, Medium-Level efficiency, and High-Level efficiency.

Thomas L. Baldwin; Robert J. Turk; Kurt S. Myers; Jake P. Gentle; Jason W. Bush

2012-08-01T23:59:59.000Z

405

Transformer Efficiency Assessment - Okinawa, Japan  

SciTech Connect

The US Army Engineering & Support Center, Huntsville (USAESCH), and the US Marine Corps Base (MCB), Okinawa, Japan retained Idaho National Laboratory (INL) to conduct a Transformer Efficiency Assessment of “key” transformers located at multiple military bases in Okinawa, Japan. The purpose of this assessment is to support the Marine Corps Base, Okinawa in evaluating medium voltage distribution transformers for potential efficiency upgrades. The original scope of work included the MCB providing actual transformer nameplate data, manufacturer’s factory test sheets, electrical system data (kWh), demand data (kWd), power factor data, and electricity cost data. Unfortunately, the MCB’s actual data is not available and therefore making it necessary to de-scope the original assessment. Note: Any similar nameplate data, photos of similar transformer nameplates, and basic electrical details from one-line drawings (provided by MCB) are not a replacement for actual load loss test data. It is recommended that load measurements are performed on the high and low sides of transformers to better quantify actual load losses, demand data, and power factor data. We also recommend that actual data, when available, be inserted by MCB Okinawa where assumptions have been made and then the LCC analysis updated. This report covers a generalized assessment of modern U.S. transformers in a three level efficiency category, Low-Level efficiency, Medium-Level efficiency, and High-Level efficiency.

Thomas L. Baldwin; Robert J. Turk; Kurt S. Myers; Jake P. Gentle; Jason W. Bush

2012-05-01T23:59:59.000Z

406

Two-Point Boundary Value Problems for Curves: The Case of Minimum Free Energy Paths  

E-Print Network (OSTI)

Two-Point Boundary Value Problems for Curves: The Case of Minimum Free Energy Paths corrected.S.A. Abstract The calculation of a minimum free energy path can be considered as a two-point boundary value box solvers. The second paragraph of Section 1 is corrected. Because free energy is defined in terms

Skeel, Robert

407

A branch-and-cut algorithm for the minimum labeling Hamiltonian cycle problem and two variants  

Science Conference Proceedings (OSTI)

This paper proposes a mathematical model, valid inequalities and polyhedral results for the minimum labeling Hamiltonian cycle problem. This problem is defined on an unweighted graph in which each edge has a label. The aim is to determine a Hamiltonian ... Keywords: Branch-and-cut, Minimum labeling problem, Traveling salesman problem

Nicolas Jozefowiez; Gilbert Laporte; Frédéric Semet

2011-11-01T23:59:59.000Z

408

Fast Algorithms for Specially Structured Minimum Cost Flow Problems with Applications  

Science Conference Proceedings (OSTI)

The objective of the classical minimum cost flow problem is to send units of a good that reside at one or more points in a network (sources or supply nodes) with arc capacities to one or more other points in the network (sinks or demand nodes), incurring ... Keywords: analysis of algorithms, applications, computational complexity, flow algorithms, minimum cost flow problem, networks

Balachandran Vaidyanathan; Ravindra K. Ahuja

2010-11-01T23:59:59.000Z

409

Minimum Energy Compensation Strategy and Characteristic Analysis for Dynamic Voltage Restorer  

Science Conference Proceedings (OSTI)

The minimum energy compensation strategy and its characteristic for Dynamic Voltage Restorer (DVR) considering the equipment’s voltage limitation are discussed. The strategy when the injection voltage is under or especially above the voltage limitation ... Keywords: dynamic voltage restorer, minimum energy compensation, compensation strategy, compensation characteristic, voltage limitation

Yingying Liu; Xu Yonghai; Xiao Xiangning; Guo Chunlin

2009-10-01T23:59:59.000Z

410

Buildings Performance Database  

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

DOE Buildings Performance DOE Buildings Performance Database Paul Mathew Lawrence Berkeley National Laboratory pamathew@lbl.gov (510) 486 5116 April 3, 2013 Standard Data Spec API 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: * Large-scale high-quality empirical data on building energy performance is critical to support decision- making and increase confidence in energy efficiency investments. * While there are a many potential sources for such data,

411

High Efficiency Steam Electrolyzer  

SciTech Connect

A novel steam electrolyzer has been developed. In conventional electrolyzers, oxygen produced from electrolysis is usually released in the air stream. In their novel design, natural gas is used to replace air in order to reduce the chemical potential difference across the electrolyzer, thus minimizing the electrical consumption. The oxygen from the electrolysis is consumed in either a total oxidation or a partial oxidation reaction with natural gas. Experiments performed on single cells shown a voltage reduction as much as 1 V when compared to conventional electrolyzers. Using thin film materials and high performance cathode and anode, electrolysis could be done at temperatures as low as 700 C with electrolytic current as high as 1 A/cm{sup 2} at a voltage of 0.5 V only. The 700 C operating temperature is favorable to the total oxidation of natural gas while minimizing the need for steam that is otherwise necessary to avoid carbon deposition. A novel tubular electrolyzer stack has been developed. The system was designed to produce hydrogen at high pressures, taking advantage of the simplicity and high efficiency of the electrochemical compressors. A complete fabrication process was developed for making electrolyzer tubes with thin film coatings. A 100 W stack is being built.

Pham, A.Q.

2000-06-19T23:59:59.000Z

412

Energy Efficiency Standards and Labels in North America: Opportunities for Harmonization  

Science Conference Proceedings (OSTI)

To support the North American Energy Working Group's Expert Group on Energy Efficiency (NAEWG-EE), USDOE commissioned the Collaborative Labeling and Appliance Standards Program (CLASP) to prepare a resource document comparing current standards, labels, and test procedure regulations in Canada, Mexico, and the United States. The resulting document reached the following conclusions: Out of 24 energy-using products for which at least one of the three countries has energy efficiency regulations, three products -- refrigerators/freezers, split system central air conditioners, and room air conditioners -- have similar or identical minimum energy performance standards (MEPS) in the three countries. These same three products, as well as three-phase motors, have similar or identical test procedures throughout the region. There are 10 products with different MEPS and test procedures, but which have the short-term potential to develop common test procedures, MEPS, and/or labels. Three other noteworthy areas where possible energy efficiency initiatives have potential for harmonization are standby losses, uniform endorsement labels, and a new standard or label on windows. This paper explains these conclusions and presents the underlying comparative data.

Vanwiemcgrory, Laura; Wiel, Stephen; Van Wie McGrory, Laura; Harrington, Lloyd

2002-05-16T23:59:59.000Z

413

Energy Efficiency and Conservation Block Grant Program.  

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

U.S. Department of Energy Categorical Exclusion Determination Form Program or Field Office: Energy Efficiency and Conservation Block Grant Program Project Title NY-City-Syracuse Location: City Syracuse NY American Recovery and Reinvestment Act: Proposed Action or Project Description: 1) Develop energy efficiency and conservation strategy, conduct audits, and perform benchmarking/pilot

414

Welcome to the Efficient Windows Collaborative  

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

Measuring Performance: ENERGY STAR® Windows Measuring Performance: ENERGY STAR® Windows Windows for residential buildings are eligible for ENERGY STAR Most Efficient recognition in 2013. View the criteria for windows for the ENERGY STAR Most Efficient Program. Energy Star Most Efficient Program The Department of Energy (DOE) and the Environmental Protection Agency (EPA) have developed an ENERGY STAR exit disclaimer designation for products meeting certain energy performance criteria. Windows that have the ENERGY STAR designation will be labeled showing the zones in which it is qualified. Since energy efficient performance of windows, doors, and skylights varies by climate, product recommendations are given for four U.S. climate zones. For making comparisons among ENERGY STAR products, use the NFRC label or

415

An Economics-Based Second Law Efficiency  

E-Print Network (OSTI)

Second Law efficiency is a useful parameter for characterizing the energy requirements of a system in relation to the limits of performance prescribed by the Laws of Thermodynamics. However, since energy costs typically ...

Mistry, Karan Hemant

416

High-Efficiency Steam Electrolyzer  

SciTech Connect

We are developing a novel high-efficiency, high-temperature steam electrolyzer. Although water or steam electrolysis is well known to be one of the cleanest ways to produce hydrogen, widespread utilization is hindered by high operational costs because of high electricity consumption. To decrease the electrical power input requirements in electrolysis, our approach uses natural gas as an anode depolarizer. This approach essentially replaces one unit of electricity with one equivalent-energy unit of natural gas at much lower cost. The direct use of natural gas on the electrolyzer enables very high system efficiency with respect to primary energy. Experiments performed on single cells have shown a voltage reduction as much as 1 V when compared to conventional electrolyzers. System efficiency has been estimated to be 50 to 80%, depending on the electrolytic current. A 200-W prototype unit is being developed.

Pham, A Q

2001-06-20T23:59:59.000Z

417

The Minimum-Mass Extrasolar Nebula: In-Situ Formation of Close-In Super-Earths  

E-Print Network (OSTI)

Close-in super-Earths, with radii R = 2-5 R_Earth and orbital periods P < 100 days, orbit more than half, and perhaps nearly all Sun-like stars in the universe. We use this omnipresent population to construct the minimum-mass extrasolar nebula (MMEN), the circumstellar disk of solar-composition solids and gas from which such planets formed, if they formed near their current locations and did not migrate. In a series of back-of-the-envelope calculations, we demonstrate how in-situ formation in the MMEN is fast, efficient, and can reproduce many of the observed properties of close-in super-Earths, including their gas-to-rock fractions. Testable predictions are discussed.

Chiang, E

2012-01-01T23:59:59.000Z

418

Achieving Superior Energy Performance  

E-Print Network (OSTI)

Ms. Ferland will be presenting the plant energy-efficiency certification program developed by the US Council for Energy Efficiency Manufacturing over the last two years. The foundation of the program is the proposed ISO 50001 standard on energy management. Superior Energy Performance combines an outcome based approach (energy intensity improvement) with a commitment to continual improvement (conformance with the ISO standard). The program is now in the demonstration phase in a number of states.

Ferland, K.

2010-01-01T23:59:59.000Z

419

Exact and approximate solutions for the quantum minimum-Kullback-entropy estimation problem  

E-Print Network (OSTI)

The minimum Kullback entropy principle (mKE) is a useful tool to estimate quantum states and operations from incomplete data and prior information. In general, the solution of a mKE problem is analytically challenging and an approximate solution has been proposed and employed in different context. Recently, the form and a way to compute the exact solution for finite dimensional systems has been found, and a question naturally arises on whether the approximate solution could be an effective substitute for the exact solution, and in which regimes this substitution can be performed. Here, we provide a systematic comparison between the exact and the approximate mKE solutions for a qubit system when average data from a single observable are available. We address both mKE estimation of states and weak Hamiltonians, and compare the two solutions in terms of state fidelity and operator distance. We find that the approximate solution is generally close to the exact one unless the initial state is near an eigenstate of the measured observable. Our results provide a rigorous justification for the use of the approximate solution whenever the above condition does not occur, and extend its range of application beyond those situations satisfying the assumptions used for its derivation.

Carlo Sparaciari; Stefano Olivares; Francesco Ticozzi; Matteo G. A. Paris

2013-11-23T23:59:59.000Z

420

Refines Efficiency Improvement  

Science Conference Proceedings (OSTI)

Refinery processes that convert heavy oils to lighter distillate fuels require heating for distillation, hydrogen addition or carbon rejection (coking). Efficiency is limited by the formation of insoluble carbon-rich coke deposits. Heat exchangers and other refinery units must be shut down for mechanical coke removal, resulting in a significant loss of output and revenue. When a residuum is heated above the temperature at which pyrolysis occurs (340 C, 650 F), there is typically an induction period before coke formation begins (Magaril and Aksenova 1968, Wiehe 1993). To avoid fouling, refiners often stop heating a residuum before coke formation begins, using arbitrary criteria. In many cases, this heating is stopped sooner than need be, resulting in less than maximum product yield. Western Research Institute (WRI) has developed innovative Coking Index concepts (patent pending) which can be used for process control by refiners to heat residua to the threshold, but not beyond the point at which coke formation begins when petroleum residua materials are heated at pyrolysis temperatures (Schabron et al. 2001). The development of this universal predictor solves a long standing problem in petroleum refining. These Coking Indexes have great potential value in improving the efficiency of distillation processes. The Coking Indexes were found to apply to residua in a universal manner, and the theoretical basis for the indexes has been established (Schabron et al. 2001a, 2001b, 2001c). For the first time, a few simple measurements indicates how close undesired coke formation is on the coke formation induction time line. The Coking Indexes can lead to new process controls that can improve refinery distillation efficiency by several percentage points. Petroleum residua consist of an ordered continuum of solvated polar materials usually referred to as asphaltenes dispersed in a lower polarity solvent phase held together by intermediate polarity materials usually referred to as resins. The Coking Indexes focus on the amount of these intermediate polarity species since coke formation begins when these are depleted. Currently the Coking Indexes are determined by either titration or solubility measurements which must be performed in a laboratory. In the current work, various spectral, microscopic, and thermal techniques possibly leading to on-line analysis were explored for measuring the Coking Indexes.

WRI

2002-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

EERE: Energy Efficiency  

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

increase energy efficiency nationwide. Photo of residential home with roof covered in solar panels Photo of the exterior of an energy-efficient office building Photo of a plug-in...

422

Comparisons of field performance to closed-door test T ABLE 1 ratings indicate the laboratory procedure is a valid indica-Design Options to Improve the Energy Efficiency of a  

E-Print Network (OSTI)

#12;#12;Comparisons of field performance to closed-door test T ABLE 1 ratings indicate commercially manufactured refrigerators were u~ as laboratory test beds, a testing sequence of ..as PHASE I cabinets with an optimized Option 2 Evaporator/condenser size, surface r~frige~tion circuit or cvcle were

Oak Ridge National Laboratory

423

Clean and Efficient Diesel Engine  

DOE Green Energy (OSTI)

Task 1 was to design study for fuel-efficient system configuration. The objective of task 1 was to perform a system design study of locomotive engine configurations leading to a 5% improvement in fuel efficiency. Modeling studies were conducted in GT-Power to perform this task. GT-Power is an engine simulation tool that facilitates modeling of engine components and their system level interactions. It provides the capability to evaluate a variety of engine technologies such as exhaust gas circulation (EGR), variable valve timing, and advanced turbo charging. The setup of GT-Power includes a flexible format that allows the effects of variations in available technologies (i.e., varying EGR fractions or fuel injection timing) to be systematically evaluated. Therefore, development can be driven by the simultaneous evaluation of several technology configurations.

None

2010-12-31T23:59:59.000Z

424

Preston Public Utilities - Residential Energy Efficiency Rebate Program |  

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

Preston Public Utilities - Residential Energy Efficiency Rebate Preston Public Utilities - Residential Energy Efficiency Rebate Program Preston Public Utilities - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Program Info State Minnesota Program Type Utility Rebate Program Rebate Amount Lighting: See program website Room A/C: $25, plus $25 for recycling an old, working unit Central A/C: $100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Air Source Heat Pump:$100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Geothermal Heat Pump:$200/ton, plus $25/ton for every 1 EER above minimum required EER Appliances

425

Lake City Utilities - Residential Energy Efficiency Rebate Program |  

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

Lake City Utilities - Residential Energy Efficiency Rebate Program Lake City Utilities - Residential Energy Efficiency Rebate Program Lake City Utilities - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Program Info State Minnesota Program Type Utility Rebate Program Rebate Amount Lighting: Varies, see program website Room A/C: $25, plus $25 for recycling an old, working unit Central A/C: $100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Air Source Heat Pump:$100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Geothermal Heat Pump:$200/ton, plus $25/ton for every 1 EER above minimum required EER Refrigerators: $25, plus $50 for recycling an old, working unit

426

Litchfield Public Utilities - Residential Energy Efficiency Rebate Program  

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

Litchfield Public Utilities - Residential Energy Efficiency Rebate Litchfield Public Utilities - Residential Energy Efficiency Rebate Program Litchfield Public Utilities - Residential Energy Efficiency Rebate Program < Back Eligibility Commercial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Program Info State Minnesota Program Type Utility Rebate Program Rebate Amount Room A/C: $25, plus $25 for recycling an old, working unit Central A/C: $100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Air Source Heat Pump:$100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Geothermal Heat Pump:$200/ton, plus $25/ton for every 1 EER above minimum required EER Appliances Refrigerators: $25, plus $50 for recycling an old, working unit

427

Fairmont Public Utilities - Residential Energy Efficiency Rebate Program |  

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

Fairmont Public Utilities - Residential Energy Efficiency Rebate Fairmont Public Utilities - Residential Energy Efficiency Rebate Program Fairmont Public Utilities - Residential Energy Efficiency Rebate Program < Back Eligibility Commercial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Program Info State Minnesota Program Type Utility Rebate Program Rebate Amount Lighting: See program website Room A/C: $25, plus $25 for recycling an old, working unit Central A/C: $100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Air Source Heat Pump: $100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Geothermal Heat Pump: $200/ton, plus $25/ton for every 1 EER above minimum required EER

428

Saint Peter Municipal Utilities - Residential Energy Efficiency Rebate  

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

Saint Peter Municipal Utilities - Residential Energy Efficiency Saint Peter Municipal Utilities - Residential Energy Efficiency Rebate Program Saint Peter Municipal Utilities - Residential Energy Efficiency Rebate Program < Back Eligibility Commercial Fed. Government Local Government Nonprofit Residential State Government Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Program Info State Minnesota Program Type Utility Rebate Program Rebate Amount Lighting: See program website Room A/C: $25, plus $25 for recycling an old, working unit Central A/C: $100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Air Source Heat Pump:$100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Geothermal Heat Pump:$200/ton, plus $25/ton for every 1 EER above minimum

429

Wells Public Utilities - Residential Energy Efficiency Rebate Program |  

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

Wells Public Utilities - Residential Energy Efficiency Rebate Wells Public Utilities - Residential Energy Efficiency Rebate Program Wells Public Utilities - Residential Energy Efficiency Rebate Program < Back Eligibility Commercial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Program Info State Minnesota Program Type Utility Rebate Program Rebate Amount Lighting: See program website Room A/C: $25, plus $25 for recycling an old, working unit Central A/C: $100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Air Source Heat Pump:$100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Geothermal Heat Pump:$200/ton, plus $25/ton for every 1 EER above minimum required EER Appliances

430

Blooming Prairie Public Utilities - Residential Energy Efficiency Rebate  

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

Blooming Prairie Public Utilities - Residential Energy Efficiency Blooming Prairie Public Utilities - Residential Energy Efficiency Rebate Program Blooming Prairie Public Utilities - Residential Energy Efficiency Rebate Program < Back Eligibility Commercial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Program Info State Minnesota Program Type Utility Rebate Program Rebate Amount Lighting: See program website Room A/C: $25, plus $25 for recycling an old, working unit Central A/C: $100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Air Source Heat Pump:$100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Geothermal Heat Pump:$200/ton, plus $25/ton for every 1 EER above minimum

431

Redwood Falls Public Utilities - Residential Energy Efficiency Rebate  

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

Redwood Falls Public Utilities - Residential Energy Efficiency Redwood Falls Public Utilities - Residential Energy Efficiency Rebate Program Redwood Falls Public Utilities - Residential Energy Efficiency Rebate Program < Back Eligibility Commercial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Program Info State Minnesota Program Type Utility Rebate Program Rebate Amount Lighting: See program website Room A/C: $25, plus $25 for recycling an old, working unit Central A/C: $100 - $200, plus bonus for efficiency ratings above 14.5 SEER Air Source Heat Pump: $100 - $200, plus bonus for efficiency ratings above 14.5 SEER Geothermal Heat Pump: $200/ton, plus $25/ton for each 1 EER above minimum requirement Refrigerators: $25, plus $50 for recycling an old, working unit

432

Mora Municipal Utilities - Residential Energy Efficiency Rebate Program |  

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

Mora Municipal Utilities - Residential Energy Efficiency Rebate Mora Municipal Utilities - Residential Energy Efficiency Rebate Program Mora Municipal Utilities - Residential Energy Efficiency Rebate Program < Back Eligibility Commercial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Program Info State Minnesota Program Type Utility Rebate Program Rebate Amount Lighting: See program website Room A/C: $25, plus $25 for recycling an old, working unit Central A/C: $100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Air Source Heat Pump: $100 - $200, plus additional rebate for efficiency ratings above 14.5 SEER Geothermal Heat Pump: $200/ton, plus $25/ton for every 1 EER above minimum required EER

433

Testing the efficiency of a tradeable permits market  

E-Print Network (OSTI)

A tradeable permits market is said to be efficient when all affected firms trade permits until their marginal costs equal the market price. Detailed firm-level data are generally required to perform such an efficiency test, ...

Montero, Juan-Pablo

2002-01-01T23:59:59.000Z

434

Appliance Efficiency Standards  

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

Appliance Efficiency Standards and Price Discrimination C. Anna Spurlock Energy Analysis & Environmental Impact Department Environmental Energy Technologies Division Lawrence...

435

Definition of Energy Efficiency  

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

Energy Users Energy Efficiency Page Energy Efficiency Definition Energy Users Energy Efficiency Page Energy Efficiency Definition Energy Efficiency: Definition Stairs) "Take the Stairs--Be More Energy Efficient" Person A interprets the sign as the "true" definition of energy efficiency. To Person A, the elevator is not being used. He is still getting to where he wants to go and using less energy in doing so. Person B considers the fact that she is not getting to where she is going with the same ease. She does not believe that she is being energy efficient, but instead she believes that she is "conserving energy" at a reduced level of service-she has to walk instead of ride. When it comes to trying to define "to be energy efficient" or "energy efficiency", there does not seem to be a single commonly-accepted definition of energy efficiency. Along the lines of Person B's thinking, it is generally thought that an increase in energy efficiency is when either energy inputs are reduced for a given level of service, or there are increased or enhanced services for a given amount of energy inputs.

436

California Industrial Energy Efficiency Potential  

E-Print Network (OSTI)

heating (Glass) Efficient Electric Melting Intelligent Extruder (DOE) Near Net Shape Casting Efficient Curing Ovens

Coito, Fred; Worrell, Ernst; Price, Lynn; Masanet, Eric; Rafael Friedmann; Rufo, Mike

2005-01-01T23:59:59.000Z

437

"Table A52. Nonswitchable Minimum Requirements and Maximum Consumption"  

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

2. Nonswitchable Minimum Requirements and Maximum Consumption" 2. Nonswitchable Minimum Requirements and Maximum Consumption" " Potential by Census Region, 1991" " (Estimates in Physical Units)" ,,,,"RSE" ,"Actual","Minimum","Maximum","Row" "Type of Energy","Consumption","Consumption(a)","Consumption(b)","Factors" "RSE Column Factors:",1,1.2,0.8 ," Total United States" ,"-","-","-" "Electricity Receipts(c) (million kilowatthours)",718480,701478,766887,2 "Natural Gas (billion cubic feet)",5345,3485,5887,2 "Distillate Fuel Oil (thousand barrels)",23885,19113,201081,3.7 "Residual Fuel Oil (thousand barrels)",65837,36488,201921,2.6

438

www.wine-economics.org Restaurant Prices and the Minimum Wage  

E-Print Network (OSTI)

We examine the e¤ect of the minimum wage on restaurant prices. For that purpose, we estimate a price rigidity model by exploiting a unique dataset of individual price quotes used to calculate the Consumer Price Index in France. We …nd a positive and signi…cant impact of the minimum wage on prices. We obtain that the e¤ect of the minimum wage on prices is very protracted. The aggregate impact estimated with our model takes more than a year to fully pass through to retail prices.

Denis Fougère; Erwan Gautier; Hervé Le Bihan

2008-01-01T23:59:59.000Z

439

Surface structure determination by a one-stop search method for the deepest minimum  

SciTech Connect

We report results of a one-stop automated search method for the deepest minimum in surface structure determination. Starting from known chemical bond lengths, the deepest minimization frozen low-energy electron diffraction (LEED) method locates the deepest minimum in a single run without any human intervention. This is achieved by using an approximation method, the frozen LEED, which has a radius of convergence of over 0.8 A, together with a simulated annealing algorithm that hops out of local minima until a deepest minimum is found. Demonstrations are presented using simulated and experimental results.

Yu, Z.X. [Department of Physics, Zhongshan University, Guangzhou 510275 (China); Tong, S.Y. [Department of Physics and Materials, City University of Hong Kong (China)

2005-04-15T23:59:59.000Z

440

Liberty Utilities (Electric) - Residential Energy Efficiency Rebate  

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

Liberty Utilities (Electric) - Residential Energy Efficiency Rebate Liberty Utilities (Electric) - Residential Energy Efficiency Rebate Programs Liberty Utilities (Electric) - Residential Energy Efficiency Rebate Programs < Back Eligibility Construction Low-Income Residential Residential Savings Category Home Weatherization Commercial Weatherization Appliances & Electronics Heating & Cooling Construction Commercial Heating & Cooling Design & Remodeling Other Sealing Your Home Ventilation Commercial Lighting Lighting Maximum Rebate Home Performance with ENERGY STAR®: $4000 Program Info Funding Source NH Saves State New Hampshire Program Type Utility Rebate Program Rebate Amount Home Performance with ENERGY STAR®: up to $4,000 for improvements ENERGY STAR® Homes Qualification: custom incentives and technical support

Note: This page contains sample records for the topic "minimum efficiency performance" 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

Fort Collins Utilities - Commercial and Industrial Energy Efficiency Rebate  

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

Commercial and Industrial Energy Commercial and Industrial Energy Efficiency Rebate Program Fort Collins Utilities - Commercial and Industrial Energy Efficiency Rebate Program < Back Eligibility Commercial Industrial Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Commercial Heating & Cooling Cooling Construction Design & Remodeling Other Sealing Your Home Ventilation Heat Pumps Appliances & Electronics Commercial Lighting Lighting Manufacturing Insulation Windows, Doors, & Skylights Maximum Rebate Building Tune Up: $50,000 Program Info State Colorado Program Type Utility Rebate Program Rebate Amount Roof Top A/C: $100 - $150, plus $5 for each 0.1 SEER or IEER above minimum requirement Variable Frequency Drives: $85 - $120/HP Packaged Terminal A/C: $50, plus $5 for each 0.1 EER above minimum

442

Method for Determining Optimal Residential Energy Efficiency Retrofit Packages  

SciTech Connect

Businesses, government agencies, consumers, policy makers, and utilities currently have limited access to occupant-, building-, and location-specific recommendations for optimal energy retrofit packages, as defined by estimated costs and energy savings. This report describes an analysis method for determining optimal residential energy efficiency retrofit packages and, as an illustrative example, applies the analysis method to a 1960s-era home in eight U.S. cities covering a range of International Energy Conservation Code (IECC) climate regions. The method uses an optimization scheme that considers average energy use (determined from building energy simulations) and equivalent annual cost to recommend optimal retrofit packages specific to the building, occupants, and location. Energy savings and incremental costs are calculated relative to a minimum upgrade reference scenario, which accounts for efficiency upgrades that would occur in the absence of a retrofit because of equipment wear-out and replacement with current minimum standards.

Polly, B.; Gestwick, M.; Bianchi, M.; Anderson, R.; Horowitz, S.; Christensen, C.; Judkoff, R.

2011-04-01T23:59:59.000Z

443

Federal Procurement of Energy-Efficient Products  

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

Federal Procurement of Energy-Efficient Products Federal Procurement of Energy-Efficient Products Speaker(s): Christopher Payne Date: April 2, 2010 - 12:00pm Location: 90-3122 The US federal government is the largest volume buyer of energy-consuming products in the world. By procuring energy-efficient products, federal buyers can reduce energy consumption and achieve cost savings. The aggregate effect of these purchasing decisions is enormous. In addition to improving the federal government's energy performance, federal procurement of energy-efficient products can also have an impact on the world-wide market. By setting a clear standard for energy performance, federal procurement requirements can shift the market toward greater production of energy-efficient products. That, in turn, improves availability and reduces

444

Further implementation aspects of the server efficiency rating tool (SERT)  

Science Conference Proceedings (OSTI)

The Server Efficiency Rating Tool (SERT) has been developed by the Standard Performance Evaluation Corporation (SPEC) at the request of the US Environmental Protection Agency (EPA). Almost 3% of all electricity consumed within the US in 2010 went to ... Keywords: affinitization, benchmark, energy efficiency, energy star, environment protection agency (epa), framework,, memory, performance engineering, reporting, server, spec, system discovery, system performance

Klaus Dieter Lange; Jeremy A. Arnold; Hansfried Block; Nathan Totura; John Beckett; Mike G. Tricker

2013-04-01T23:59:59.000Z

445

Energy Efficiency - Assessment and Analysis of Energy Consumption at TAMK Kuntokatu 3 Campus.  

E-Print Network (OSTI)

??The energy efficiency assessment, implemented at Tampere University of Applied Sciences, Kuntokatu 3 campus, investigated the efficiency performance of the campus buildings. Facility Assessment is… (more)

Emuraishe, Irikefe

2012-01-01T23:59:59.000Z

446

HIGH EFFICIENCY SYNGAS GENERATION  

DOE Green Energy (OSTI)

This project investigated an efficient and low cost method of auto-thermally reforming natural gas to hydrogen and carbon monoxide. Reforming is the highest cost step in producing products such as methanol and Fisher Tropsch liquids (i.e., gas to liquids); and reducing the cost of reforming is the key to reducing the cost of these products. Steam reforming is expensive because of the high cost of the high nickel alloy reforming tubes (i.e., indirectly fired reforming tubes). Conventional auto-thermal or Partial Oxidation (POX) reforming minimizes the size and cost of the reformers and provides a near optimum mixture of CO and hydrogen. However POX requires pure oxygen, which consumes power and significantly increases the cost to reforming. Our high efficiency process extracts oxygen from low-pressure air with novel oxygen sorbent and transfers the oxygen to a nickel-catalyzed reformer. The syngas is generated at process pressure (typically 20 to 40 bar) without nitrogen dilution and has a 1CO to 2H{sub 2} ratio that is near optimum for the subsequent production of Fisher-Tropsch liquid to liquids and other chemicals (i.e., Gas to Liquids, GTL). Our high process efficiency comes from the way we transfer the oxygen into the reformer. All of the components of the process, except for the oxygen sorbent, are commonly used in commercial practice. A process based on a longlived, regenerable, oxygen transfer sorbent could substantially reduce the cost of natural gas reforming to syngas. Lower cost syngas (CO + 2H{sub 2}) that is the feedstock for GTL would reduce the cost of GTL and for other commercial applications (e.g., methanol, other organic chemicals). The vast gas resources of Alaska's North Slope (ANS) offer more than 22 Tcf of gas and GTL production in this application alone, and could account for as much as 300,000 to 700,000 bpd for 20 to 30+ years. We developed a new sorbent, which is an essential part of the High Efficiency Oxygen Process (HOP). We tested the sorbent and observed that it has both a good oxygen capacity and operates as a highly effective reforming catalyst. We conducted a long duration tests of the sorbent (1,500 hours of continuous operation in the HOP cycle). Although the sorbent lost some oxygen capacity with cycling, the sorbent oxygen capacity stabilized after 1,000 hours and remained constant to the end of the test, 1,500 hour. The activity of the catalyst to reform methane to a hydrogen and carbon monoxide mixture was unchanged through the oxidation/reduction cycling. Our cost and performance analyses indicated a significant reduction in the cost of GTL production when using the HOP process integrated into a GTL plant.

Robert J. Copeland; Yevgenia Gershanovich; Brian Windecker

2005-02-01T23:59:59.000Z

447

Efficient data IO for a Parallel Global Cloud Resolving Model  

Science Conference Proceedings (OSTI)

Execution of a Global Cloud Resolving Model (GCRM) at target resolutions of 2-4 km will generate, at a minimum, 10s of Gigabytes of data per variable per snapshot. Writing this data to disk, without creating a serious bottleneck in the execution of the ... Keywords: Data formatting, Geodesic grid, Global Cloud Resolving Model, Grid Specifications, High performance IO, Parallel IO libraries

Bruce Palmer; Annette Koontz; Karen Schuchardt; Ross Heikes; David Randall

2011-12-01T23:59:59.000Z

448

Recent Trends of Minimum and Maximum Surface Temperatures over Eastern Africa  

Science Conference Proceedings (OSTI)

This study investigated recent trends in the mean surface minimum and maximum air temperatures over eastern Africa by use of both graphical and statistical techniques. Daily records for 71 stations for the period 1939–92 were used.

S. M. King’uyu; L. A. Ogallo; E. K. Anyamba

2000-08-01T23:59:59.000Z

449

The Use of Polar-orbiting Satellite Sounding Data to Estimate Rural Maximum and Minimum Temperatures  

Science Conference Proceedings (OSTI)

Atmospheric sounding products from NOAA's polar-orbiting satellites were used to derive and test predictive equations of rural shelter-level maximum and minimum temperatures. Sounding data from both winter and summer months were combined with ...

Gregory L. Johnson; Jerry M. Davis; Thomas R. Karl; Alan L. McNab; J. Dan Tarpley; Peter Bloomfield

1993-05-01T23:59:59.000Z

450

Minimum Uncertainty, Coherence and Squeezing in Diffusion Processes, and Stochastic Quantization  

E-Print Network (OSTI)

We show that uncertainty relations, as well as minimum uncertainty coherent and squeezed states, are structural properties for diffusion processes. Through Nelson stochastic quantization we derive the stochastic image of the quantum mechanical coherent and squeezed states.

Salvatore De Martino; Silvio De Siena; Fabrizio Illuminati; Giuseppe Vitiello

1993-10-18T23:59:59.000Z

451

MINIMUM UNCERTAINTY AND SQUEEZING IN DIFFUSION PROCESSES AND STOCHASTIC QUANTIZATION 1  

E-Print Network (OSTI)

We show that uncertainty relations, as well as minimum uncertainty coherent and squeezed states, are structural properties for diffusion processes. Through Nelson stochastic quantization we derive the stochastic image of the quantum mechanical coherent and squeezed states. 1

S. De Martino; S. De Siena; F. Illuminati; G. Vitiello

1993-01-01T23:59:59.000Z

452

Recent Trends in Maximum and Minimum Temperature Threshold Exceedences in the Northeastern United States  

Science Conference Proceedings (OSTI)

Changes in the annual number of daily maximum and minimum temperature threshold exceedences between 1951 and 1993 are assessed at a network of 22 primarily rural sites in the northeastern United States. After adjusting the annual time series for ...

Arthur T. DeGaetano

1996-07-01T23:59:59.000Z

453

A Local Minimum Aliasing Method for Use in Nonlinear Numerical Models  

Science Conference Proceedings (OSTI)

The local spectral method is a minimum aliasing technique for the discretization and numerical integration of prognostic systems consisting of nonlinear partial differential equations. The technique embodies many features of both spectral ...

John R. Anderson

1989-07-01T23:59:59.000Z

454

From Fjords to Open Seas: Ecological Genomics of Expanding Oxygen Minimum Zones (2010 JGI User Meeting)  

Science Conference Proceedings (OSTI)

Steven Hallam of the University of British Columbia talks "From Fjords to Open Seas: Ecological Genomics of Expanding Oxygen Minimum Zones" on March 24, 2010 at the 5th Annual DOE JGI User Meeting

Hallam, Steven

2010-03-24T23:59:59.000Z

455

Systematic Biases in Manual Observations of Daily Maximum and Minimum Temperature  

Science Conference Proceedings (OSTI)

The authors demonstrate that manual observations of daily maximum and minimum temperature are strongly biased toward temperatures ending in certain digits. The nature and severity of these biases are quantified using standard statistical methods. ...

Jon M. Nese

1994-05-01T23:59:59.000Z

456

Optimising maximum power output and minimum entropy generation of Atkinson cycle using mutable smart bees algorithm  

Science Conference Proceedings (OSTI)

The purpose of this article is optimising maximum power output (MPO) and minimum entropy generation (MEG) of an Atkinson cycle as a multi-objective constraint thermodynamic problem by a new improved artificial bee colony algorithm which utilises 'mutable ...

Mofid Gorji; Ahmad Mozaffari; Sina Mohammadrezaei Noudeh

2012-07-01T23:59:59.000Z

457

A Method to Estimate Missing Daily Maximum and Minimum Temperature Observations  

Science Conference Proceedings (OSTI)

A method to estimate missing daily maximum and minimum temperatures is presented. Temperature estimates are based on departures from daily temperature normals at the three closest stations with similar observation times. Although applied to ...

Arthur T. DeGaetano; Keith L. Eggleston; Warren W. Knapp

1995-02-01T23:59:59.000Z

458

The Minimum Spanning Tree Histogram as a Verification Tool for Multidimensional Ensemble Forecasts  

Science Conference Proceedings (OSTI)

The minimum spanning tree (MST) histogram is a multivariate extension of the ideas behind the conventional scalar rank histogram. It tabulates the frequencies, over n forecast occasions, of the rank of the MST length for each ensemble, within the ...

D. S. Wilks

2004-06-01T23:59:59.000Z

459

Reconstructed Annual Minimum Temperatures for the Gulf States, 1799–1988  

Science Conference Proceedings (OSTI)

A very long series of minimum winter temperatures for the United States Gulf Coast region was developed. A search was made through sources of archival data to locate early temperature records for the region. Records from a number of different ...

Robert D. Erhardt Jr.

1990-06-01T23:59:59.000Z

460

DiffServ node with join minimum cost queue policy and multiclass traffic  

Science Conference Proceedings (OSTI)

DiffServ, the vehicle for providing relative QoS in the Internet is also easily amenable to simple and effective pricing mechanisms. By pricing access to a relative QoS, we can model a DiffServ node as a 'Join Minimum Cost Queue' in which an arriving ... Keywords: diffServ, finite buffer queues, join minimum cost queue, join shortest queue, network pricing, quasi-birth--death processes, queue control

Rahul Tandra; N. Hemachandra; D. Manjunath

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum efficiency performance" 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

On-Off Minimum-Time Control With Limited Fuel Usage: Global Optima Via Linear Programming  

SciTech Connect

A method for finding a global optimum to the on-off minimum-time control problem with limited fuel usage is presented. Each control can take on only three possible values: maximum, zero, or minimum. The simplex method for linear systems naturally yields such a solution for the re-formulation presented herein because it always produces an extreme point solution to the linear program. Numerical examples for the benchmark linear flexible system are presented.

DRIESSEN,BRIAN

1999-09-01T23:59:59.000Z

462

Energy Efficiency Loans for State Government Agencies | Department of  

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

You are here You are here Home » Energy Efficiency Loans for State Government Agencies Energy Efficiency Loans for State Government Agencies < Back Eligibility State Government Savings Category Heating & Cooling Commercial Heating & Cooling Heating Cooling Appliances & Electronics Home Weatherization Construction Commercial Weatherization Design & Remodeling Manufacturing Other Heat Pumps Commercial Lighting Lighting Water Heating Bioenergy Buying & Making Electricity Solar Wind Maximum Rebate Not specified Program Info State Kentucky Program Type State Loan Program Rebate Amount Minimum loan: $50,000 Provider Division of Facility Finance and Administration Cabinet Through the Green Bank of Kentucky, state agencies may be eligible for three separate energy loan products, depending on the proposed energy

463

High Performance Window Attachments  

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

High Performance Window High Performance Window Attachments D. Charlie Curcija Lawrence Berkeley National Laboratory dccurcija@lbl.gov 510-495-2602 April 4, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Impact of Project: * Motivate manufacturers to make improvements in Window systems U-Factors, SHGC and daylighting utilization * Increase awareness of benefits from energy efficient window attachments Problem Statement: * A wide range of residential window attachments are available, but they have widely unknown

464

Energy Efficiency and Greenhouse Gases | Department of Energy  

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

Environmental, Energy, and Economic Performance, and DOE Order 436.1, Departmental Sustainability, and approved by LM. The team incorporates requirements for energy efficiency and...

465

Columbia Gas of Massachusetts- Commercial Energy Efficiency Program  

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

Columbia Gas of Massachusetts offers its multi-family, commercial and industrial customers rebates and assistance for energy efficiency improvements to eligible facilities. The program will perform...

466

Available Technologies: Green Wave: Energy-Efficient HPC ...  

A Berkeley Lab team led by John Shalf and David Donofrio developed Green Wave, a energy-efficient computing platform that can perform critical Reverse Time Migration ...

467

What's Energy Efficiency?  

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

What is energy efficiency? What is energy efficiency? Energy efficiency is "using less energy to provide the same service". There are other definitions, but this is a good operational one. The best way to understand this idea is through examples: When you replace a single pane window in your house with an energy-efficient one, the new window prevents heat from escaping in the winter, so you save energy by using your furnace or electric heater less while still staying comfortable. In the summer, efficient windows keep the heat out, so the air conditioner does not run as often and you save electricity. When you replace an appliance, such as a refrigerator or clothes washer, or office equipment, such as a computer or printer, with a more energy-efficient model, the new equipment provides the same service, but

468

New High Performance Water Vapor Membranes to Improve Fuel Cell Balance of Plant Efficiency and Lower Costs (SBIR Phase I) - DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report  

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

0 0 DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report Earl H. Wagener (Primary Contact), Brad P. Morgan, Jeffrey R. DiMaio Tetramer Technologies L.L.C. 657 S. Mechanic St. Pendleton, SC 29670 Phone: (864) 646-6282 Email: earl.wagener@tetramertechnologies.com DOE Manager HQ: Nancy Garland Phone: (202) 586-5673 Email: Nancy.Garland@ee.doe.gov Contract Number: DE-SC0006172 Project Start Date: June 17, 2011 Project End Date: March 16, 2012 Fiscal Year (FY) 2012 Objectives Demonstrate water vapor transport membrane with * >18,000 gas permeation units (GPU) Water vapor membrane with less than 20% loss in * performance after stress tests Crossover leak rate: <150 GPU * Temperature Durability of 90°C with excursions to * 100°C Cost of <$10/m

469

Transmission Efficiency Technology Assessment  

Science Conference Proceedings (OSTI)

The reduction of our carbon footprint and increasing the role of renewable energy are important parts of the strategy for the greening of electric energy supply. As a result, efficient power delivery is also becoming a priority of our national and international energy strategies. Energy efficiency is usually associated with the customer’s compact florescent light bulbs and other energy saving appliances. Efficiency, however, is also applied to utilities and their distribution of power to their customers....

2008-12-22T23:59:59.000Z

470

Transmission Efficiency Technology Assessment  

Science Conference Proceedings (OSTI)

Reducing our carbon footprint and increasing the role of renewable energy are important parts of the strategy for the greening of electric energy supply. Energy efficiency will be a major contributing factor to achieving a low-carbon future. Traditionally, energy-efficiency measures have focused on end-use efficiency. But if one considers the electricity consumed by auxiliary loads at power plants and lost in power delivery, the single largest industrial consumer of electricity is the electric power indu...

2009-12-23T23:59:59.000Z

471

Green Transmission Efficiency Initiative  

Science Conference Proceedings (OSTI)

As a consequence of escalating interest in the environment and climate changea national focus on energy efficiency, and growing electricity demandthe time is right to assess energy efficiency from both an end-use perspective as well as across the utility value chain, from generation, to transmission, to distribution. The reduction of our carbon footprint and increasing the role of renewable energy are an important part of the strategy for the greening for electric energy supply. As a result, efficient po...

2009-07-31T23:59:59.000Z

472

Market barriers to energy efficiency  

SciTech Connect

Discussions of energy policy in an environmentally constrained world often focus on the use of tax instruments to internalize the external effects of energy utilization or achieve specified reductions in energy use in the most cost-effective manner. A substantial literature suggests, however, that significant opportunities exist to reduce energy utilization by implementing technologies that are cost-effective under prevailing economic conditions but that are not fully implemented by existing market institutions. This paper examines the theory of the market for energy-using equipment, showing that problems of imperfect information and transaction costs may bias rational consumers to purchase devices that use more energy than those that would be selected by a well-informed social planner guided by the criterion of economic efficiency. Consumers must base their purchase decisions on observed prices and expectations of postpurchase equipment performance. If it is difficult or costly for individuals to form accurate and precise expectations, the level of energy efficiency achieved by competitive markets will vary from the socially efficient outcome. Such market barriers'' suggest a role for regulatory intervention to improve market performance at prevailing energy prices.

Howarth, R.B. (Lawrence Berkeley Lab., CA (United States)); Andersson, B. (Stockholm School of Economics (Sweden))

1992-06-01T23:59:59.000Z