National Library of Energy BETA

Sample records for lighting efficiency standards

  1. Buildings Energy Data Book: 7.7 Efficiency Standards for Lighting

    Buildings Energy Data Book [EERE]

    Efficiency Standards for Lighting March 2011 7.7.2 Efficiency Standards for General Service Fluorescent Lamps Effective for products manufactured before July 14, 2012 Minimum Nominal Lamp Average Lamp Lamp Type (1) Wattage (W) Minimum CRI Efficacy (lm/W) Effective Date 4-Foot Medium Bipin >35 69 75.0 November 1, 1995 4-Foot Medium Bipin 45 75.0 November 1, 1995 2-Foot U-Shaped >35 69 68.0 November 1, 1995 2-Foot U-Shaped 45 64.0 November 1, 1995 8-Foot Slimline >65 69 80.0 May 1, 1994

  2. Energy-efficiency labels and standards: A guidebook for appliances, equipment and lighting

    SciTech Connect (OSTI)

    McMahon, James E.; Wiel, Stephen

    2001-02-16

    Energy-performance improvements in consumer products are an essential element in any government's portfolio of energy-efficiency and climate change mitigation programs. Governments need to develop balanced programs, both voluntary and regulatory, that remove cost-ineffective, energy-wasting products from the marketplace and stimulate the development of cost-effective, energy-efficient technology. Energy-efficiency labels and standards for appliances, equipment, and lighting products deserve to be among the first policy tools considered by a country's energy policy makers. The U.S. Agency for International Development (USAID) and the United Nations Foundation (UNF) recognize the need to support policy makers in their efforts to implement energy-efficiency standards and labeling programs and have developed this guidebook, together with the Collaborative Labeling and Appliance Standards Program (CLASP), as a primary reference. This guidebook was prepared over the course of the past year with significant contribution from the authors and reviewers mentioned previously. Their diligent participation has made this the international guidance tool it was intended to be. The lead authors would also like to thank the following individuals for their support in the development, production, and distribution of the guidebook: Marcy Beck, Elisa Derby, Diana Dhunke, Ted Gartner, and Julie Osborn of Lawrence Berkeley National Laboratory as well as Anthony Ma of Bevilacqua-Knight, Inc. This guidebook is designed as a manual for government officials and others around the world responsible for developing, implementing, enforcing, monitoring, and maintaining labeling and standards-setting programs. It discusses the pros and cons of adopting energy-efficiency labels and standards and describes the data, facilities, and institutional and human resources needed for these programs. It provides guidance on the design, development, implementation, maintenance, and evaluation of the programs

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

    SciTech Connect (OSTI)

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

    2011-06-01

    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

  4. High efficiency incandescent lighting

    DOE Patents [OSTI]

    Bermel, Peter; Ilic, Ognjen; Chan, Walker R.; Musabeyoglu, Ahmet; Cukierman, Aviv Ruben; Harradon, Michael Robert; Celanovic, Ivan; Soljacic, Marin

    2014-09-02

    Incandescent lighting structure. The structure includes a thermal emitter that can, but does not have to, include a first photonic crystal on its surface to tailor thermal emission coupled to, in a high-view-factor geometry, a second photonic filter selected to reflect infrared radiation back to the emitter while passing visible light. This structure is highly efficient as compared to standard incandescent light bulbs.

  5. Buildings Energy Data Book: 7.6 Efficiency Standards for Lighting

    Buildings Energy Data Book [EERE]

    4 Lighting Standards for General Service Incandescent Lamps Prescribed by EISA 2007 General Service Incandescent Effective Date Maximum Wattage Rated Lumen Range Minimum Life Modified Spectrum General Service Incandescent Effective Date Maximum Wattage Rated Lumen Range Minimum Life By 2020, the minimum efficacy for general service incandescent will be 45 lm/W unless the Secretary of Energy has implemented another standard which saves as much or more energy than a 45 lm/W standard. Source(s): U.

  6. Buildings Energy Data Book: 7.6 Efficiency Standards for Lighting

    Buildings Energy Data Book [EERE]

    2 Efficiency Standards for Incandescent Reflector Lamps (1) Effective for lamps manufactured after November 1, 1995 and before July 14, 2012 Minimum Nominal Average Lamp Lamp Wattage Efficacy (lm/W) 40-50 10.5 51-66 11.0 67-85 12.5 86-115 14.0 116-155 14.5 156-205 15.0 Effective for lamps manufactured on or after July 14, 2012 Minimum Rated Lamp Rated Average Lamp Lamp Wattage Lamp Spectrum Diameter (in) Voltage (V) Efficacy (lm/W) (2) 40-205 Standard Spectrum >2.5 ≥125 6.8*P^0.27 40-205

  7. Buildings Energy Data Book: 7.6 Efficiency Standards for Lighting

    Buildings Energy Data Book [EERE]

    1 Efficiency Standards for General Service Fluorescent Lamps Effective for products manufactured before July 14, 2012 Minimum Nominal Lamp Average Lamp Lamp Type (1) Wattage (W) Minimum CRI Efficacy (lm/W) Effective Date 4-Foot Medium Bipin >35 69 75.0 November 1, 1995 4-Foot Medium Bipin ≤35 45 75.0 November 1, 1995 2-Foot U-Shaped >35 69 68.0 November 1, 1995 2-Foot U-Shaped ≤35 45 64.0 November 1, 1995 8-Foot Slimline >65 69 80.0 May 1, 1994 8-Foot Slimline ≤65 45 80.0 May 1,

  8. Buildings Energy Data Book: 7.6 Efficiency Standards for Lighting

    Buildings Energy Data Book [EERE]

    3 Efficiency Standards for Medium Base Compact Fluorescent Lamps (1) Factor Requirements Lamp Power (W) & Configuration Minimum Efficacy: lumens/watt (based upon initial lumen data) Bare Lamp: Lamp Power < 15 45.0 Lamp Power ≥ 15 60.0 Covered Lamp (no reflector): Lamp Power < 15 40.0 15 ≤ Lamp Power < 19 48.0 19 ≤ Lamp Power < 25 50.0 25 ≤ Lamp Power 55.0 Note(s): Source(s): 1) Effective for products manufactured on or after January 1, 2006

  9. Energy Efficiency Resource Standard

    Broader source: Energy.gov [DOE]

    Washington voters passed Initiative 937 in 2006, creating a renewable energy standard and an energy efficiency resource standard for the state's electric utilities. Initiative 937, enacted as th...

  10. Appliance Energy Efficiency Standards

    Broader source: Energy.gov [DOE]

    In 2004 the Energy Efficiency Standards Act (EESA of 2004) became law in the State of Maryland. The General Assembly passed the EESA to establish minimum energy efficiency standards on nine...

  11. Energy Efficiency Product Standards

    Broader source: Energy.gov [DOE]

    New Jersey Energy Efficiency Product Standards, enacted in 2005, include minimum standards for eight products, which were preempted by the federal Energy Policy Act of 2005. Future standards, if...

  12. Energy-Efficiency Labels and Standards: A Guidebook forAppliances, Equipment, and Lighting - 2nd Edition

    SciTech Connect (OSTI)

    Wiel, Stephen; McMahon, James E.

    2005-04-28

    Energy-performance improvements in consumer products are an essential element in any government's portfolio of energy-efficiency and climate change mitigation programs. Governments need to develop balanced programs, both voluntary and regulatory, that remove cost-ineffective, energy-wasting products from the marketplace and stimulate the development of cost-effective, energy-efficient technology. Energy-efficiency labels and standards for appliances, equipment, and lighting products deserve to be among the first policy tools considered by a country's energy policy makers. The U.S. Agency for International Development (USAID) and several other organizations identified on the cover of this guidebook recognize the need to support policy makers in their efforts to implement energy-efficiency standards and labeling programs and have developed this guidebook, together with the Collaborative Labeling and Appliance Standards Program (CLASP), as a primary reference. This second edition of the guidebook was prepared over the course of the past year, four years after the preparation of the first edition, with a significant contribution from the authors and reviewers mentioned previously. Their diligent participation helps maintain this book as the international guidance tool it has become. The lead authors would like to thank the members of the Communications Office of the Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory for their support in the development, production, and distribution of the guidebook. This guidebook is designed as a manual for government officials and others around the world responsible for developing, implementing, enforcing, monitoring, and maintaining labeling and standards setting programs. It discusses the pros and cons of adopting energy-efficiency labels and standards and describes the data, facilities, and institutional and human resources needed for these programs. It provides guidance on the design, development

  13. Energy Efficiency Portfolio Standard

    Broader source: Energy.gov [DOE]

    On December 2015, the NY PSC issued an order extending the Energy Efficiency Portfolio Standard (EEPS) and Customer-Sited Tier (CST) of the Renewable Portfolio Standard (RPS) till Feb 29, 2016...

  14. Energy Efficiency Resource Standard

    Broader source: Energy.gov [DOE]

    In 2008, New Mexico enacted H.B. 305, the Efficient Use of Energy Act, which created an Energy Efficiency Resource Standard (EERS) for New Mexico’s electric utilities, and a requirement that all ...

  15. Energy Savings Week: How Lighting Standards Are Saving You Money...

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

    Standards Are Saving You Money Lighting accounts for about 11% of home electricity use (or 7% energy use). Lighting efficiency standards are expected to save households almost ...

  16. Energy Efficiency Standards for Appliances

    Broader source: Energy.gov [DOE]

    In 2007 the District of Columbia (D.C.) enacted legislation, entitled the Energy Efficiency Standards Act of 2007, which created efficiency standards for six products, four of which were...

  17. Appliance and Equipment Efficiency Standards

    Broader source: Energy.gov [DOE]

    Arizona’s Appliance and Equipment Efficiency Standards (Arizona Revised Statutes, Title 44, Section 1375) set minimum energy efficiency standards for twelve products, all of which have since been...

  18. Northeast Energy Efficiency Partnerships: Advanced Lighting Controls...

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

    Northeast Energy Efficiency Partnerships: Advanced Lighting Controls Northeast Energy Efficiency Partnerships: Advanced Lighting Controls Credit: Northeast Energy Efficiency...

  19. Light Duty Efficient, Clean Combustion

    SciTech Connect (OSTI)

    Donald Stanton

    2010-12-31

    Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energy's Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of the following objectives were met with fuel efficiency improvement targets exceeded: (1) Improve light duty vehicle (5000 lb. test weight) fuel efficiency by 10.5% over today's state-of-the-art diesel engine on the FTP city drive cycle; (2) Develop and design an advanced combustion system plus aftertreatment system that synergistically meets Tier 2 Bin 5 NOx and PM emissions standards while demonstrating the efficiency improvements; (3) Maintain power density comparable to that of current conventional engines for the applicable vehicle class; and (4) Evaluate different fuel components and ensure combustion system compatibility with commercially available biofuels. Key accomplishments include: (1) A 25% improvement in fuel efficiency was achieved with the advanced LDECC engine equipped with a novel SCR aftertreatment system compared to the 10.5% target; (2) An 11% improvement in fuel efficiency was achieved with the advanced LDECC engine and no NOx aftertreamtent system; (3) Tier 2 Bin 5 and SFTP II emissions regulations were met with the advanced LDECC engine equipped with a novel SCR aftertreatment system; (4) Tier 2 Bin 5 emissions regulations were met with the advanced LDECC engine and no NOx aftertreatment, but SFTP II emissions regulations were not met for the US06 test cycle - Additional technical barriers exist for the no NOx

  20. Energy Efficiency Standards for Appliances

    Broader source: Energy.gov [DOE]

    Connecticut enacted efficiency standards through legislative actions in 2004 and 2007 and 2011. This law covers the following products that have not been pre-empted by federal standards:...

  1. Energy Efficiency Standards

    Broader source: Energy.gov [DOE]

    The Arizona Corporation Commission (ACC) adopted rules in August 2010 and December 2010 requiring certain electric and gas utilities in the state to meet prescribed energy efficiency requirements...

  2. Energy Efficiency Resource Standard

    Broader source: Energy.gov [DOE]

    The California Legislature emphasized the importance of energy efficiency and established broad goals with the enactment of Assembly Bill 2021 of 2006. The bill calls for a 10% reduction in forec...

  3. Energy Efficiency Resource Standards

    Broader source: Energy.gov [DOE]

    The Illinois Power Agency Act (IPAA), enacted in 2007, created energy efficiency and demand response programs in Illinois. Under the IPAA, electric utilities are required to demonstrate 2% annual...

  4. A Bright Idea: New Efficiency Standards for Incandescent and Fluorescent

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

    Lights | Department of Energy A Bright Idea: New Efficiency Standards for Incandescent and Fluorescent Lights A Bright Idea: New Efficiency Standards for Incandescent and Fluorescent Lights July 21, 2009 - 5:18pm Addthis John Lippert Pretty soon, lighting is going to get a lot more efficient. New standards for incandescent reflector bulbs, general purpose fluorescent bulbs, and regular incandescent bulbs are going into effect beginning in approximately three years. You may be curious about

  5. Pupillary efficient lighting system

    DOE Patents [OSTI]

    Berman, Samuel M.; Jewett, Don L.

    1991-01-01

    A lighting system having at least two independent lighting subsystems each with a different ratio of scotopic illumination to photopic illumination. The radiant energy in the visible region of the spectrum of the lighting subsystems can be adjusted relative to each other so that the total scotopic illumination of the combined system and the total photopic illumination of the combined system can be varied independently. The dilation or contraction of the pupil of an eye is controlled by the level of scotopic illumination and because the scotopic and photopic illumination can be separately controlled, the system allows the pupil size to be varied independently of the level of photopic illumination. Hence, the vision process can be improved for a given level of photopic illumination.

  6. New Lighting Standards Began in 2012 | Department of Energy

    Office of Environmental Management (EM)

    save you about 50 per year when you replace 15 traditional incandescent bulbs in your home. Measuring Light in Lumens The new efficiency standards require lightbulbs to consume...

  7. Energy Efficiency Through Lighting Upgrades

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

    Chickasaw Nation Energy Efficiency Through Lighting Upgrades The Chickasaw Nation  The Chickasaw Nation consists of 13 counties in southeastern Oklahoma  Tribal enrollment exceeds 35,000  The Tribal headquarters complex is located in Ada, Oklahoma  The Division of Commerce operates 17 facilities which are included in this grant Chickasaw Nation Boundaries Main Objectives  Retrofit Casino Lighting to the most energy efficient option available  Reduce energy consumption and

  8. Light Duty Efficient, Clean Combustion

    SciTech Connect (OSTI)

    Stanton, Donald W.

    2011-06-03

    Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energy’s Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of our objectives were met with fuel efficiency improvement targets exceeded.

  9. Northeast Energy Efficiency Partnerships: Advanced Lighting Controls |

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

    Department of Energy Northeast Energy Efficiency Partnerships: Advanced Lighting Controls Northeast Energy Efficiency Partnerships: Advanced Lighting Controls Credit: Northeast Energy Efficiency Partnerships Credit: Northeast Energy Efficiency Partnerships Lead Performer: Northeast Energy Efficiency Partnerships, Lexington, MA Partners: -- Burlington Electric Department -- Cape Light Compact -- Connecticut Light and Power -- Efficiency Vermont -- National Grid -- NSTAR Electric and Gas --

  10. Columbia Water & Light- HVAC and Lighting Efficiency Rebates

    Office of Energy Efficiency and Renewable Energy (EERE)

    Columbia Water & Light (CWL) offers rebates to its commercial and industrial customers for the purchase of high efficiency HVAC installations and efficient lighting. Incentives for certain...

  11. Energy Efficiency through Lighting Upgrades

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

    Through Lighting Upgrades The Chickasaw Nation The Chickasaw Nation * The Chickasaw Nation consists of 13.5 counties in southeastern Oklahoma * Tribal enrollment exceeds 35,000 * The Tribal headquarters complex is located in Ada, Oklahoma * The Division of Commerce operates 17 facilities most of which are included in this grant Chickasaw Nation Boundaries Main Objectives * Retrofit Casino Lighting to the most energy efficient option available * Reduce energy consumption and energy bills by 30%

  12. Maximizing Light Utilization Efficiency and Hydrogen Production...

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

    Maximizing Light Utilization Efficiency and Hydrogen Production in Microalgal Cultures, DOE Hydrogen Program FY 2010 Annual Progress Report Maximizing Light Utilization Efficiency ...

  13. How Do You Light Your Home Efficiently?

    Broader source: Energy.gov [DOE]

    An average household dedicates 11% of its energy budget to lighting. Installing efficient lighting technologies, using task lighting, flipping the switch, and taking advantage of natural daylight...

  14. Stronger Manufacturers' Energy Efficiency Standards for Residential...

    Energy Savers [EERE]

    Stronger Manufacturers' Energy Efficiency Standards for Residential Air Conditioners Go Into Effect Today Stronger Manufacturers' Energy Efficiency Standards for Residential Air ...

  15. Luminous Efficacy Standards for General Purpose Lights

    Broader source: Energy.gov [DOE]

    *Efficacy refers to the overall energy efficiency of light and is measured in lumens (measure of light output) per watt (measure of power input). The efficacy of a typical incandescent light bulb...

  16. Peninsula Light Company- Commercial Efficient Lighting Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Peninsula Light Company (PLC) offers a rebate program for commercial customers who wish to upgrade to energy efficient lighting. Participating customers must be served by PLC commercial service....

  17. Lighting Market Study: Illuminating the Northwest Efficiency

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

    Lighting Market Study: Illuminating the Northwest Efficiency Community Summer 2014 through Winter 2015 Research Manager: Carrie Cobb, clcobb@bpa.gov, 503-230-4985 The lighting...

  18. Legislative Directive: EISA 2007, Subtitle B: Lighting Energy Efficiency

    Broader source: Energy.gov [DOE]

    Legislative Directive: EISA 2007, Subtitle B: Lighting Energy Efficiency, Sec. 321: Lighting Energy Efficiency

  19. Appliance/Equipment Efficiency Standards | Open Energy Information

    Open Energy Info (EERE)

    ApplianceEquipment Efficiency Standards Massachusetts Boilers Furnaces No Appliance Energy Efficiency Standards (Maryland) ApplianceEquipment Efficiency Standards Maryland...

  20. Appliance and Equipment Energy Efficiency Standards

    Broader source: Energy.gov [DOE]

    New York appliance efficiency standards legislation, enacted in 2005, covers the following products offered for sale in New York not preempted by federal standards as of August 2011:

  1. Appliance and Equipment Energy Efficiency Standards

    Broader source: Energy.gov [DOE]

    In June 2005, Oregon passed legislation setting minimum energy efficiency standards for 11 appliances. The standards have been updated to include additional products, most recently by Senate Bill...

  2. ANSI Energy Efficiency Standardization Coordination Collaborative...

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

    The Energy Efficiency Standardization Roadmap is on target for publication in June 2014 ... are needed Slide 1 EESCC Standardization Roadmap Overview The EESCC roadmap details ...

  3. Standards Development for Solid-State Lighting

    SciTech Connect (OSTI)

    2011-12-16

    To accelerate the development and implementation of needed standards for solid-state lighting products, DOE works closely with a network of standards-setting organizations and offers technical assistance and support

  4. New Energy Efficiency Standards for Commercial Refrigeration...

    Office of Environmental Management (EM)

    ... NREL. Historic Energy Efficiency Rules Would Save Consumers Money and Cut Carbon Emissions New Energy Efficiency Standards to Help Americans Save Money by Saving Energy, Cut

  5. Energy Efficiency Resource Standards Resources | Department of...

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

    Find EERS resources below. Coordination of Energy Efficiency and Demand Response ACEEE Database of State EERS Center for Climate and Energy Solutions: Energy Efficiency Standards ...

  6. Energy Efficiency Through Lighting Upgrades

    SciTech Connect (OSTI)

    Berst, Kara; Howeth, Maria

    2013-02-26

    Lighting upgrades including neon to LED, incandescent to CFL's and T-12 to T-8 and T-5's were completed through this grant. A total of 16 Chickasaw nation facilities decreased their carbon footprint because of these grant funds. Calculations used were based on comparing the energy usage from the previous year's average and the current energy usage. For facilities without a full year's set of energy bills, the month after installation was compared to the same month from the previous year. Overall, the effect the lighting change-outs had for the gaming centers and casinos far exceeded expectations. For the Madill Gaming Center; both an interior and exterior upgrade was performed which resulted in a 31% decrease in energy consumption. This same reduction was seen in every facility that participated in the grant. Just by simply changing out light bulbs to newer energy efficient equivalents, a decrease in energy usage can be achieved and this was validated by the return on investment seen at Chickasaw Nation facilities. Along with the technical project tasks were awareness sessions presented at Chickasaw Head Starts. The positive message of environmental stewardship was passed down to head start students and passed along to Chickasaw employees. Excitement was created in those that learned what they could do to help reduce their energy bills and many followed through and took the idea home. For a fairy low cost, the general public can also use this technique to lower their energy consumption both at home and at work. Although the idea behind the project was somewhat simple, true benefits have been gained through environmental awareness and reductions of energy costs.

  7. Energy Efficiency Resource Standard | Department of Energy

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

    including standards for energy supply diversification, distributed generation, demand response, and "prudent and reliable" energy efficiency and energy conservation...

  8. Randolph EMC- Commercial and Industrial Efficient Lighting Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Commercial and industrial members who upgrade to energy-efficient light bulbs which meet Randolph EMC's standards are eligible for a prescriptive incentive payment. The cooperative will provide a...

  9. DOE Opens Investigation into Alleged Lighting Efficiency Violations |

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

    Department of Energy Opens Investigation into Alleged Lighting Efficiency Violations DOE Opens Investigation into Alleged Lighting Efficiency Violations March 24, 2010 - 4:36pm Addthis Today, the U.S. Department of Energy announced it had issued subpoenas to three companies who were identified as selling certain torchiere lamps that failed to meet federal energy efficiency standards. Under the subpoenas, Target Corporation, Adesso, Inc. and Habitex Corporation are required to submit detailed

  10. Technology Development for Light Duty High Efficient Diesel Engines...

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

    Light Duty High Efficient Diesel Engines Technology Development for Light Duty High Efficient Diesel Engines Improve the efficiency of diesel engines for light duty applications ...

  11. Efficiency Lighting & Maintenance Inc | Open Energy Information

    Open Energy Info (EERE)

    & Maintenance Inc Jump to: navigation, search Name: Efficiency Lighting & Maintenance Inc Address: 5a Del Mar Drive Place: Brookfield, Connecticut Zip: 06804 Region: Northeast - NY...

  12. Waverly Light & Power- Residential Energy Efficiency Rebates

    Office of Energy Efficiency and Renewable Energy (EERE)

    Waverly Light and Power (WL&P) offers rebates for the purchase and installation of a variety of energy efficiency measures and the purchase of energy efficient appliances. Rebates are available...

  13. Guide to Energy-Efficient Lighting

    SciTech Connect (OSTI)

    2010-10-01

    A fact sheet from the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy: Lighting accounts for about 15% of an average home’s electricity use, so it pays to make energy-efficient choices.

  14. Appliance and Equipment Efficiency Standards

    Broader source: Energy.gov [DOE]

    Testing procedures for energy efficiency not provided for in Rhode Island law or in the State Building Code may be adopted from the test methods approved by the U.S. Department of Energy, or in t...

  15. Appliance and Equipment Energy Efficiency Standards

    Broader source: Energy.gov [DOE]

    Washington enacted appliance efficiency legislation in 2005, creating minimum efficiency standards for twelve products, all of which have been preempted by federal law. HB 1004, signed in May 2009...

  16. The Standard Energy Efficiency Database Platform

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

    SEED: The Standard Energy Efficiency Database Platform Bill Prindle Bill Prindle ICF ... Features * SEED is built on a blank database structure for which users create their ...

  17. Energy Efficiency Portfolio Standard | Department of Energy

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

    pucoindex.cfmconsumer-informationconsumer-to... State Ohio Program Type Energy Efficiency Resource Standard Summary Note: In May 2014 SB 310 made significant...

  18. New Energy Efficiency Standards for Commercial Refrigeration...

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

    for Commercial Refrigeration Equipment to Cut Businesses' Energy Bills and Carbon Pollution New Energy Efficiency Standards for Commercial Refrigeration Equipment to Cut...

  19. Energy Department Issues New Appliance Efficiency Standards ...

    Office of Environmental Management (EM)

    WASHINGTON, DC -- U.S. Secretary of Energy Samuel W. Bodman announced that a final rule to codify fifteen energy efficiency standards for residential appliances and commercial ...

  20. SEED: Standard Energy Efficiency Data Platform

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

    SEED: Standard Energy Efficiency Data Platform 2014 Building Technologies Office Peer ... that manage and publish building energy data: City disclosure ordinances, portfolio ...

  1. Energy Department Announces Largest Energy Efficiency Standard...

    Office of Environmental Management (EM)

    announced historic new efficiency standards for commercial air conditioners and furnaces. ... on their utility bills and carbon pollution will be reduced by 885 million metric ...

  2. Efficiency Maine Residential Lighting Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    In addition, in partnership with Maine Libraries, Efficiency Maine has made free electricity monitor loaners available for Maine residents to borrow from all of Maine’s libraries. The monitors pl...

  3. Standard Energy Efficiency Data Platform

    Energy Science and Technology Software Center (OSTI)

    2014-07-15

    The SEED platform is expected to be a building energy performance data management tool that provides federal, state and local governments, building owners and operators with an easy, flexible and cost-effective method to collect information about groups of buildings, oversee compliance with energy disclosure laws and demonstrate the economic and environmental benefits of energy efficiency. It will allow users to leverage a local application to manage data disclosure and large data sets without the ITmore » investment of developing custom applications. The first users of SEED will be agencies that need to collect, store, and report/share large data sets generated by benchmarking, energy auditing, retro-commissioning or retrofitting of many buildings. Similarly, building owners and operators will use SEED to manage their own energy data in a common format and centralized location. SEED users will also control the disclosure of their information for compliance requirements, recognition programs such as ENERGY STAR, or data sharing with the Buildings Performance Database and/or other third parties at their discretion.« less

  4. Guide to Energy Efficient Lighting

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

    CFLs Although CFLs have been available for residential use since the 1980s, they have made signifcant strides in quality and popularity in recent years. Today, CFLs are the most cost-effective, energy-effcient choice readily available on the market. A CFL produces the same amount of light as a comparable incan- descent, but uses 75% less energy, produces 75% less heat, and lasts up to 10 times longer than an incandescent bulb. CFLs come in many sizes and shapes. Three-way CFL bulbs and dimmer-

  5. Monmouth Power & Light- Residential Energy Efficiency Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Monmouth Power & Light offers a wide range of energy efficiency rebates that encourage residential customers to save energy in their homes. To qualify for these incentives electricity must be...

  6. Appliance Efficiency Standards and Price Discrimination

    SciTech Connect (OSTI)

    Spurlock, Cecily Anna

    2013-05-08

    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 changing.

  7. NREL-Lessons Learned from Energy Efficiency Lighting Programs...

    Open Energy Info (EERE)

    Lessons Learned from Energy Efficiency Lighting Programs Webinar Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Lessons Learned from Energy Efficiency Lighting Programs...

  8. How Energy-Efficient Light Bulbs Compare with Traditional Incandescent...

    Office of Environmental Management (EM)

    Energy-Efficient Light Bulbs Compare with Traditional Incandescents How Energy-Efficient Light Bulbs Compare with Traditional Incandescents November 5, 2014 - 11:39pm Addthis By...

  9. Neutron light output and detector efficiency (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Neutron light output and detector efficiency Citation Details In-Document Search Title: Neutron light output and detector efficiency You are accessing a document from the ...

  10. Neutron light output and detector efficiency (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Neutron light output and detector efficiency Citation Details In-Document Search Title: Neutron light output and detector efficiency Authors: Taddeucci, Terry N 1 + Show Author ...

  11. Concord Municipal Light Plant- Commercial Energy Efficiency Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Concord Municipal Light Plant (CMLP) offers rebates to commercial customers for installing energy efficient lighting. General lighting upgrades to facilities are eligible for a 50% rebate worth up...

  12. What Today's Lighting Efficiency Proposal Is And What It Isn't |

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

    Department of Energy Today's Lighting Efficiency Proposal Is And What It Isn't What Today's Lighting Efficiency Proposal Is And What It Isn't February 12, 2016 - 2:30pm Addthis Today, the Department of Energy proposed a new lighting standard that would apply to General Service Lamps, including LEDs. | Energy Department photo Today, the Department of Energy proposed a new lighting standard that would apply to General Service Lamps, including LEDs. | Energy Department photo Joshunda Sanders

  13. Product Standards for Fluorescent Lighting (Japan) | Open Energy...

    Open Energy Info (EERE)

    Fluorescent Lighting (Japan) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Product Standards for Fluorescent Lighting (Japan) Focus Area: Appliances & Equipment...

  14. Interior Lighting Efficiency for Municipalities | Department of Energy

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

    Interior Lighting Efficiency for Municipalities Interior Lighting Efficiency for Municipalities This webinar covered a basic understanding of lighting, different types of lamps and luminaries, importance of energy efficiency in lighting, and knowledge of where to find financial resources. Presentation (3.14 MB) Transcript (95 KB) More Documents & Publications interiorlightingefficiencyformunicipalities.doc Exterior Solid-State Lighting Solutions for Municipalities States & Emerging

  15. DOE Increases Energy Efficiency Standards for Residential Furnaces...

    Energy Savers [EERE]

    Increases Energy Efficiency Standards for Residential Furnaces & Boilers DOE Increases Energy Efficiency Standards for Residential Furnaces & Boilers November 19, 2007 - 4:31pm ...

  16. DOE Makes Progress toward ANSI's Energy Efficiency Standardization...

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

    Makes Progress toward ANSI's Energy Efficiency Standardization Roadmap Goals DOE Makes Progress toward ANSI's Energy Efficiency Standardization Roadmap Goals June 14, 2016 - ...

  17. Standard Energy Efficiency Data Platform | Department of Energy

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

    Commercial Buildings Analysis Tools Standard Energy Efficiency Data Platform Standard Energy Efficiency Data Platform The SEED Platform(tm) makes it easy to utilize and share ...

  18. Fact Sheet: Efficiency Standards for Natural Gas Compressors

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

    Fact Sheet: Efficiency Standards for Natural Gas Compressors Summary: DOE will take the first step toward establishing energy efficiency standards for new natural gas compressor ...

  19. North America Energy Efficiency Standards and Labeling

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

    North American Energy Efficiency Standards and Labeling North American Energy Working Group NORTH AMERICAN ENERGY WORKING GROUP The North American Energy Working Group (NAEWG) was established in spring of 2001 by the Canadian Minister of Natural Resources, the Mexican Secretary of Energy and the U.S. Secretary of Energy, to enhance North American energy cooperation. The Group is led by officials from Natural Resources Canada, the Mexican Secretariat of Energy, and the U.S. Department of Energy.

  20. Standards Development for Solid-State Lighting | Department of Energy

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

    Research & Development » Technology Application R&D » Standards Development for Solid-State Lighting Standards Development for Solid-State Lighting To accelerate the development and implementation of needed standards for solid-state lighting products, DOE works closely with a network of standards-setting organizations and offers technical assistance and support. Since 2006, DOE has facilitated ongoing dialogue with key standards development organizations to foster greater coordination

  1. High Quantum Efficiency OLED Lighting Systems

    SciTech Connect (OSTI)

    Shiang, Joseph

    2011-09-30

    The overall goal of the program was to apply improvements in light outcoupling technology to a practical large area plastic luminaire, and thus enable the product vision of an extremely thin form factor high efficiency large area light source. The target substrate was plastic and the baseline device was operating at 35 LPW at the start of the program. The target LPW of the program was a >2x improvement in the LPW efficacy and the overall amount of light to be delivered was relatively high 900 lumens. Despite the extremely difficult challenges associated with scaling up a wet solution process on plastic substrates, the program was able to make substantial progress. A small molecule wet solution process was successfully implemented on plastic substrates with almost no loss in efficiency in transitioning from the laboratory scale glass to large area plastic substrates. By transitioning to a small molecule based process, the LPW entitlement increased from 35 LPW to 60 LPW. A further 10% improvement in outcoupling efficiency was demonstrated via the use of a highly reflecting cathode, which reduced absorptive loss in the OLED device. The calculated potential improvement in some cases is even larger, ~30%, and thus there is considerable room for optimism in improving the net light coupling efficacy, provided absorptive loss mechanisms are eliminated. Further improvements are possible if scattering schemes such as the silver nanowire based hard coat structure are fully developed. The wet coating processes were successfully scaled to large area plastic substrate and resulted in the construction of a 900 lumens luminaire device.

  2. High Efficiency, Illumination Quality OLEDs for Lighting

    SciTech Connect (OSTI)

    Joseph Shiang; James Cella; Kelly Chichak; Anil Duggal; Kevin Janora; Chris Heller; Gautam Parthasarathy; Jeffery Youmans; Joseph Shiang

    2008-03-31

    The goal of the program was to demonstrate a 45 lumen per watt white light device based upon the use of multiple emission colors through the use of solution processing. This performance level is a dramatic extension of the team's previous 15 LPW large area illumination device. The fundamental material system was based upon commercial polymer materials. The team was largely able to achieve these goals, and was able to deliver to DOE a 90 lumen illumination source that had an average performance of 34 LPW a 1000 cd/m{sup 2} with peak performances near 40LPW. The average color temperature is 3200K and the calculated CRI 85. The device operated at a brightness of approximately 1000cd/m{sup 2}. The use of multiple emission colors particularly red and blue, provided additional degrees of design flexibility in achieving white light, but also required the use of a multilayered structure to separate the different recombination zones and prevent interconversion of blue emission to red emission. The use of commercial materials had the advantage that improvements by the chemical manufacturers in charge transport efficiency, operating life and material purity could be rapidly incorporated without the expenditure of additional effort. The program was designed to take maximum advantage of the known characteristics of these material and proceeded in seven steps. (1) Identify the most promising materials, (2) assemble them into multi-layer structures to control excitation and transport within the OLED, (3) identify materials development needs that would optimize performance within multilayer structures, (4) build a prototype that demonstrates the potential entitlement of the novel multilayer OLED architecture (5) integrate all of the developments to find the single best materials set to implement the novel multilayer architecture, (6) further optimize the best materials set, (7) make a large area high illumination quality white OLED. A photo of the final deliverable is shown. In

  3. Microsoft PowerPoint - ZERH Lighting Efficiency - FINAL w bios

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

    READY HOME: LIGHTING EFFICIENCY Presented by: Brooke Silber, LC, IES, LEED AP - Jan & Brooke Luminae David Brignati, AIA, LEED AP - Newport Ventures High Efficacy Lighting in DOE ...

  4. DOE Zero Energy Ready Home: Lighting Efficiency Webinar (Text...

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

    webinar, DOE Zero Energy Ready Home: Lighting Efficiency, presented in May 2015. Alex Krowka: Presentation cover slide: ... join us today for this session on LED lighting design...

  5. LED Provides Effective and Efficient Parking Area Lighting at...

    Office of Environmental Management (EM)

    LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC Engineering Service Center Document details new lighting technology that reduces energy consumption and ...

  6. Marblehead Municipal Light Department- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    The Marblehead Municipal Light Department encourages conservation within the residential sector through the Energy Efficiency Rebate Program. Rebates are available for energy efficient appliances,...

  7. DOE ZERH Webinar: LED Lighting Efficiency | Department of Energy

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

    LED Lighting Efficiency DOE ZERH Webinar: LED Lighting Efficiency Description: LED lighting offers efficiency and performance benefits we've never seen in traditional lighting technologies. Commercial buildings have seen rapid growth in LED deployment, and in the residential arena leading builders are now integrating LED lighting packages. And as with any new building system, there are integration challenges along with the process of consumer understanding and acceptance. This webinar will

  8. DOE Proposes Higher Efficiency Standards for Refrigerators | Department of

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

    Energy Higher Efficiency Standards for Refrigerators DOE Proposes Higher Efficiency Standards for Refrigerators September 28, 2010 - 12:00am Addthis WASHINGTON, DC - U.S. Energy Secretary Steven Chu today announced the release of a new proposed energy efficiency standard for residential refrigerators, refrigerator-freezers, and freezers. The standard, as proposed, could save consumers as much as $18.6 billion over thirty years. The Obama Administration has made efficiency standards a major

  9. Technology Development for Light Duty High Efficient Diesel Engines |

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

    Department of Energy Light Duty High Efficient Diesel Engines Technology Development for Light Duty High Efficient Diesel Engines Improve the efficiency of diesel engines for light duty applications through technical advances in system optimization. deer09_stanton.pdf (1.7 MB) More Documents & Publications Light Duty Efficient Clean Combustion Advanced Diesel Engine Technology Development for HECC Effects of Biomass Fuels on Engine & System Out Emissions for Short Term Endurance

  10. Setting the Standard for Industrial Energy Efficiency

    SciTech Connect (OSTI)

    McKane, Aimee; Williams, Robert; Perry, Wayne; Li, Tienan

    2007-06-01

    Industrial motor-driven systems use more than 2194 billionkWh annually on a global basis and offer one of the largest opportunitiesfor energy savings.1 The International Energy Agency estimates thatoptimization of motor driven systems could reduce global electricitydemand by 7 percent through the application of commercially availabletechnologies and using well-tested engineering practices. Yet manyindustrial firms remain either unaware of or unable to achieve theseenergy savings. The same factors that make it so challenging to achieveand sustain energy efficiency in motor-driven systems (complexity,frequent changes) apply to the production processes that they support.Yet production processes typically operate within a narrow band ofacceptable performance. These processes are frequently incorporated intoISO 9000/14000 quality and environmental management systems, whichrequire regular, independent audits to maintain ISO certification, anattractive value for international trade. It is our contention that acritical step in achieving and sustaining energy efficiency ofmotor-driven systems specifically, and industrial energy efficiencygenerally, is the adoption of a corporate energy management standard thatis consistent with current industrial quality and environmentalmanagement systems such as ISO. Several energy management standardscurrently exist (US, Denmark, Ireland, Sweden) and specifications(Germany, Netherlands) others are planned (China, Spain, Brazil, Korea).This paper presents the current status of energy management standardsdevelopment internationally, including an analysis of their sharedfeatures and differences, in terms of content, promulgation, andimplementation. The purpose of the analysis is to describe the currentstate of "best practices" for this emerging area of energy efficiencypolicymaking and tosuggest next steps toward the creation of a trulyinternational energy management standard that is consistent with the ISOprinciples of measurement

  11. Renewable Energy and Energy Efficiency Portfolio Standard | Department...

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

    State North Carolina Program Type Renewables Portfolio Standard Summary North Carolina's Renewable Energy and Energy Efficiency Portfolio Standard (REPS), established by Senate...

  12. Energy Efficiency Standards for Refrigerators in Brazil: A Methodology...

    Open Energy Info (EERE)

    Standards for Refrigerators in Brazil: A Methodology for Impact Evaluation Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Energy Efficiency Standards for Refrigerators...

  13. Saving American Families and Businesses Money through Lighting Efficiency |

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

    Department of Energy Saving American Families and Businesses Money through Lighting Efficiency Saving American Families and Businesses Money through Lighting Efficiency February 12, 2016 - 1:38pm Addthis Saving American Families and Businesses Money through Lighting Efficiency David Friedman David Friedman Assistant Secretary for Energy Efficiency and Renewable Energy (Acting) What are the key facts? The Department of Energy released a new proposed efficiency rule for lightbulbs to make it

  14. Energy Conservation Standards for Ceiling Fan Light Kits Notice...

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

    Kits notice of proposed rulemaking More Documents & Publications ISSUANCE 2015-06-25: Energy Conservation Program: Energy Conservation Standards for Ceiling Fan Light Kits,...

  15. A light diet for a giant appetite: An assessment of China's proposed fluorescent lamp standard

    SciTech Connect (OSTI)

    Lin, Jiang

    2002-04-11

    Lighting has been one of the fastest growing electric end-uses in China over the last twenty years, with an average annual growth rate of 14%. Fluorescent lighting provides a significant portion of China's lighting need. In 1998, China produced 680 million fluorescent lamps, of which 420 million were linear fluorescent lamps of various diameters (T8 to T12). There are substantial variations both in energy efficiency and lighting performance among locally produced fluorescent lamps. Such variations present a perfect opportunity for policy intervention through efficiency standards to promote the adoption of more efficient fluorescent lamps in China. This paper analyzes China's proposed minimum efficiency standard for fluorescent lamps and presents an assessment of its likely impacts on China's lighting energy consumption and GHG emissions.

  16. U.S. Lighting Market Characterization Volume II: Energy Efficient Lighting Technology Options

    SciTech Connect (OSTI)

    Hong, Eugene; Conroy, Louise A.; Scholand, Michael J.

    2005-09-30

    Multiyear study to evaluate light sources and identify opportunities for saving energy. This report looks broadly at energy-efficient options in lighting and identifies leading opportunities.

  17. EA-2020: Energy Efficiency Design Standards for New Federal Low...

    Office of Environmental Management (EM)

    20: Energy Efficiency Design Standards for New Federal Low-Rise Residential Buildings (RIN 1904-AD56) EA-2020: Energy Efficiency Design Standards for New Federal Low-Rise...

  18. EA-1926: Energy Efficiency Design Standards for New Federal Low...

    Office of Environmental Management (EM)

    EA-1926: Energy Efficiency Design Standards for New Federal Low-Rise Residential Buildings (RIN 1904-AC61) EA-1926: Energy Efficiency Design Standards for New Federal Low-Rise...

  19. Northeast Energy Efficiency Partnerships: Advanced Lighting Controls...

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

    PROJECT OBJECTIVE NEEP's Commercial Advanced Lighting Control (CALC) project is designed to address market barriers and enable widespread adoption of Advanced Lighting Control ...

  20. Nationwide: New Efficiency Standards for Power Supplies Anticipate Energy Savings

    Office of Energy Efficiency and Renewable Energy (EERE)

    New energy efficiency standards for external power supplies will reduce energy consumption, energy bills, and carbon emissions.

  1. How Energy-Efficient Light Bulbs Compare with Traditional Incandescents |

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

    Department of Energy Electricity & Fuel » Lighting » How Energy-Efficient Light Bulbs Compare with Traditional Incandescents How Energy-Efficient Light Bulbs Compare with Traditional Incandescents By replacing your home's five most frequently used light fixtures or bulbs with models that have earned the ENERGY STAR, you can save $75 each year. By replacing your home's five most frequently used light fixtures or bulbs with models that have earned the ENERGY STAR, you can save $75 each

  2. Energy Efficiency Portfolio Standard | Department of Energy

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

    Energy efficiency technologies defined by the RPS include heat pump water heating, ice storage, ratepayer-funded energy efficiency programs, and the use of rejected...

  3. Global Potential of Energy Efficiency Standards and Labeling Programs

    SciTech Connect (OSTI)

    McNeil, Michael A; McNeil, Michael A.; Letschert, Virginie; de la Rue du Can, Stephane

    2008-06-15

    This report estimates the global potential reductions in greenhouse gas emissions by 2030 for energy efficiency improvements associated with equipment (appliances, lighting, and HVAC) in buildings by means of energy efficiency standards and labels (EES&L). A consensus has emerged among the world's scientists and many corporate and political leaders regarding the need to address the threat of climate change through emissions mitigation and adaptation. A further consensus has emerged that a central component of these strategies must be focused around energy, which is the primary generator of greenhouse gas emissions. Two important questions result from this consensus: 'what kinds of policies encourage the appropriate transformation to energy efficiency' and 'how much impact can these policies have'? This report aims to contribute to the dialogue surrounding these issues by considering the potential impacts of a single policy type, applied on a global scale. The policy addressed in this report is Energy Efficient Standards and Labeling (EES&L) for energy-consuming equipment, which has now been implemented in over 60 countries. Mandatory energy performance standards are important because they contribute positively to a nation's economy and provide relative certainty about the outcome (both timing and magnitudes). Labels also contribute positively to a nation's economy and importantly increase the awareness of the energy-consuming public. Other policies not analyzed here (utility incentives, tax credits) are complimentary to standards and labels and also contribute in significant ways to reducing greenhouse gas emissions. We believe the analysis reported here to be the first systematic attempt to evaluate the potential of savings from EES&L for all countries and for such a large set of products. The goal of the analysis is to provide an assessment that is sufficiently well-quantified and accurate to allow comparison and integration with other strategies under

  4. A Bright Idea: New Efficiency Standards for Incandescent and...

    Office of Environmental Management (EM)

    July 21, 2009 - 5:18pm Addthis John Lippert Pretty soon, lighting is going to get a lot ... trying to adopt more energy-efficient lighting; it has also spurred media articles ...

  5. Energy Efficiency Standards for State Buildings

    Broader source: Energy.gov [DOE]

    The Montana Department of Labor must also develop and adopt high performance building standards, along with the Montana university system and other state agencies. These standards must take into...

  6. Energy-efficient lighting system for television

    DOE Patents [OSTI]

    Cawthorne, Duane C.

    1987-07-21

    A light control system for a television camera comprises an artificial light control system which is cooperative with an iris control system. This artificial light control system adjusts the power to lamps illuminating the camera viewing area to provide only sufficient artificial illumination necessary to provide a sufficient video signal when the camera iris is substantially open.

  7. High extraction efficiency ultraviolet light-emitting diode

    DOE Patents [OSTI]

    Wierer, Jonathan; Montano, Ines; Allerman, Andrew A.

    2015-11-24

    Ultraviolet light-emitting diodes with tailored AlGaN quantum wells can achieve high extraction efficiency. For efficient bottom light extraction, parallel polarized light is preferred, because it propagates predominately perpendicular to the QW plane and into the typical and more efficient light escape cones. This is favored over perpendicular polarized light that propagates along the QW plane which requires multiple, lossy bounces before extraction. The thickness and carrier density of AlGaN QW layers have a strong influence on the valence subband structure, and the resulting optical polarization and light extraction of ultraviolet light-emitting diodes. At Al>0.3, thinner QW layers (<2.5 nm are preferred) result in light preferentially polarized parallel to the QW plane. Also, active regions consisting of six or more QWs, to reduce carrier density, and with thin barriers, to efficiently inject carriers in all the QWs, are preferred.

  8. High Efficiency Organic Light Emitting Devices for Lighting

    SciTech Connect (OSTI)

    So, Franky; Tansu, Nelson; Gilchrist, James

    2013-06-30

    Incorporate internal scattering layers and microlens arrays in high efficiency OLED to achieve up to 70% EQE.

  9. Summer Loving-Energy-Efficient Outdoor Lighting! | Department of Energy

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

    Summer Loving-Energy-Efficient Outdoor Lighting! Summer Loving-Energy-Efficient Outdoor Lighting! June 20, 2013 - 9:47am Addthis Outdoor solar lights use solar cells, which convert sunlight into electricity, and are easy to install and virtually maintenance free. | Photo courtesy of ©iStockphoto.com/ndejan Outdoor solar lights use solar cells, which convert sunlight into electricity, and are easy to install and virtually maintenance free. | Photo courtesy of ©iStockphoto.com/ndejan Erin

  10. Purchasing Energy-Efficient Light Commercial Heating and Cooling Equipment

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

    | Department of Energy Purchasing Energy-Efficient Light Commercial Heating and Cooling Equipment Purchasing Energy-Efficient Light Commercial Heating and Cooling Equipment The Federal Energy Management Program (FEMP) provides acquisition guidance for commercial central air conditioners (CACs). This equipment falls under the light commercial heating and cooling equipment product category covered by ENERGY STAR efficiency requirements. Federal laws and requirements mandate that agencies

  11. DOE Closes Investigation into Alleged Lighting Efficiency Violations |

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

    Department of Energy Closes Investigation into Alleged Lighting Efficiency Violations DOE Closes Investigation into Alleged Lighting Efficiency Violations April 16, 2010 - 10:39am Addthis The U.S. Department of Energy has closed its investigation into the energy efficiency of lighting products manufactured by Habitex Corporation and sold under the Target and Adesso brand names based on test data provided by the companies. The Department requested information from the three companies last

  12. Healthy Efficient Homes Research & Standards | Department of...

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

    (LBNL) - Berkeley, CA Partners: -- ASHRAE -- ASTM- West Conshohocken, PA -- RESNET ... America Program Research-to-Market Plan ASHRAE Standard 62.2. Ventilation and Acceptable ...

  13. Renewable Portfolio Standards - Energy Efficiency Component ...

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

    of Connecticut Power and Light (CL&P). The Draft Decision approves the use of a full revenue decoupling mechanism identical to the one in place for the United Illuminating...

  14. Carbon Power & Light- Residential and Commercial Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Carbon Power and Light, in collaboration with Tri-State Generation and Transmission Association, offers financial incentives for members to increase the energy efficiency of homes and facilities....

  15. Cape Light Compact- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Cape Light Compact (CLC) offers a variety of financial incentives to customers for purchasing energy efficient residential equipment. Residential customers can take advantage of incentives on...

  16. Independence Power and Light- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Independence Power and Light (IPL) offers rebates to residential customers for purchasing new, energy efficient appliances. Rebates are available on central air conditioning systems, heat pumps,...

  17. Chicopee Electric Light Department- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Chicopee Electric Light Department (CELD) offers a variety of energy efficiency rebates for its residential customers. CELD provides rebates for heat pump water heaters, refrigerators, freezers,...

  18. Energy Efficiency Standard for Focus on Energy

    Broader source: Energy.gov [DOE]

    In March 2006, Wisconsin enacted Act 141 (2005), which requires the Wisconsin Public Service Commission (WPSC) to revise goals, priorities, and measurable targets for energy efficiency programs...

  19. Energy Efficiency Standards for State Facilities | Department...

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

    Computing Equipment Program Info Sector Name State Website http:www.nyserda.ny.govEnergy-Efficiency-and-Renewable-ProgramsComme... State New York Program Type Energy...

  20. Energy Efficiency Standard | Department of Energy

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

    energy delivered and peak demand. Utilities are required to file an energy efficiency and demand-response plan with the Illinois Commerce Commission (ICC) every three years,...

  1. Duquesne Light Company- Residential Energy Efficiency Program

    Broader source: Energy.gov [DOE]

    Duquesne Light provides rebates to its residential customers for purchasing and installing energy-saving equipment. Eligible equipment includes dehumidifiers, freezers, refrigerators, air conditi...

  2. Marblehead Municipal Light Department - Residential Energy Efficiency...

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

    and additional program requirements can be found in the rebate guide located on the program web site. Contact Marblehead Municipal Light Department for more details on this...

  3. High-Efficiency Nitride-Based Photonic Crystal Light Sources

    Broader source: Energy.gov [DOE]

    The University of California Santa Barbara (UCSB) is maximizing the efficiency of a white LED by enhancing the external quantum efficiency using photonic crystals to extract light that would normally be confined in a conventional structure. Ultimate efficiency can only be achieved by looking at the internal structure of light. To do this, UCSB is focusing on maximizing the light extraction efficiency and total light output from light engines driven by Gallium Nitride (GaN)-based LEDs. The challenge is to engineer large overlap (interaction) between modes and photonic crystals. The project is focused on achieving high extraction efficiency in LEDs, controlled directionality of emitted light, integrated design of vertical device structure, and nanoscale patterning of lateral structure.

  4. Fact Sheet: Efficiency Standards for Natural Gas Compressors | Department

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

    of Energy Fact Sheet: Efficiency Standards for Natural Gas Compressors Fact Sheet: Efficiency Standards for Natural Gas Compressors The following fact sheet outlines one of the Department of Energy's series of actions, partnerships, and stakeholder commitments to help modernize the nation¹s natural gas transmission and distribution systems and reduce methane emissions. DOE will take the first step toward establishing energy efficiency standards for new natural gas compressor units by

  5. DOE Makes Progress toward ANSI's Energy Efficiency Standardization

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

    Roadmap Goals | Department of Energy Makes Progress toward ANSI's Energy Efficiency Standardization Roadmap Goals DOE Makes Progress toward ANSI's Energy Efficiency Standardization Roadmap Goals June 14, 2016 - 11:09am Addthis Joan Glickman, Senior Adviser and Home Energy Score Program Manager at DOE's Building Technologies Office, speaks about the importance of energy efficiency standardization at High Performance Building Week on Capitol Hill. Joan Glickman, Senior Adviser and Home Energy

  6. Energy Efficiency Standards for State Facilities

    Office of Energy Efficiency and Renewable Energy (EERE)

    HB 1266 (July 2013) requires that newly constructed state buildings meet or exceed ASHRAE 90.1-2010 requirements or any other more stringent efficient building requirements selected by the Bureau...

  7. Energy Efficiency Standard for State Buildings

    Broader source: Energy.gov [DOE]

    In December 2015, Governor Raimondo issued an executive order establishing a renewable energy and an energy efficiency goal for the State facilities. The order directs the RI state government: 1)...

  8. Bureau of Energy Efficiency Standard & Labelling (India) Website...

    Open Energy Info (EERE)

    URI: cleanenergysolutions.orgcontentbureau-energy-efficiency-standard-lab Language: English Policies: "Deployment Programs,Regulations" is not in the list of possible...

  9. New Energy Efficiency Standards for Metal Halide Lamp Fixtures...

    Energy Savers [EERE]

    WASHINGTON - As part of the Energy Department's efforts to develop efficiency standards that cut carbon pollution and save money by saving energy, U.S. Energy Secretary Ernest ...

  10. New Energy Efficiency Standards for External Power Supplies to...

    Office of Environmental Management (EM)

    "Appliance efficiency standards and high quality appliances go hand-in-hand, and represent a huge opportunity to help families and businesses save money by saving energy," said ...

  11. New Energy Efficiency Standards for Electric Motors and Walk...

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

    WASHINGTON - As part of President Obama's Climate Action Plan, which called for efficiency standards that cut carbon pollution and save money by saving energy, the Energy ...

  12. New Energy Efficiency Standards for Microwave Ovens to Save Consumers...

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

    "Appliance efficiency standards represent a huge opportunity to help families save money by saving energy, while still delivering high quality appliances for consumers," said ...

  13. Standard Energy Efficiency Database Platform - 2013 BTO Peer...

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

    Database Platform - 2013 BTO Peer Review Standard Energy Efficiency Database Platform - 2013 BTO Peer Review commlbldgs09prindle040313.pdf (1.03 MB) More Documents & Publications ...

  14. EIA Energy Efficiency-Appliance Standards and Labeling Links

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

    and enforcement requirements for residential appliances; final rule Energy Efficiency and Renewable Energy - Appliances & Commercial Equipment Standards, the program develops test...

  15. EA-2001: Energy Efficiency Design Standards: New Federal Commercial...

    Energy Savers [EERE]

    2001: Energy Efficiency Design Standards: New Federal Commercial and Multi-Family High-Rise Residential Buildings and New Federal Low-Rise Residential Buildings EA-2001: Energy...

  16. Energy-Efficient Building Standards for State Facilities

    Broader source: Energy.gov [DOE]

    Via Executive Order 27, Maine requires the construction or renovation of state buildings to incorporate "green building" standards that would achieve significant energy efficiency and environmental...

  17. Presenting a New (and Cool) Appliance Efficiency Standard | Department of

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

    Energy Presenting a New (and Cool) Appliance Efficiency Standard Presenting a New (and Cool) Appliance Efficiency Standard September 29, 2010 - 5:24pm Addthis Elizabeth Meckes Elizabeth Meckes Director of User Experience & Digital Technologies, Office of Public Affairs What does this mean for me? The proposed appliance standard could save consumers as much as $18.6 billion over thirty years Proposed standards could save nearly 4.5 quadrillion BTUs over 30 years Secretary Chu recently

  18. LED Holiday Lights: Festive, Safe, and Efficient!

    Broader source: Energy.gov [DOE]

    Ed. Note cross posted from the Energy Savers Blog. LED light strings may cost a little more up front, but they'll save money in the long run and probably last longer too.

  19. Upping Efficiency Standards, Lowering Utility Bills | Department of Energy

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

    Upping Efficiency Standards, Lowering Utility Bills Upping Efficiency Standards, Lowering Utility Bills September 2, 2010 - 4:17pm Addthis Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs What does this mean for me? Using energy-efficient appliances is one of the easiest and most important ways consumers have to save money. Purchasing energy-efficient appliances is one of the easiest and most important ways consumers have to save money, reduce their electricity

  20. Efficient Lighting Design and Office Worker Productivity

    SciTech Connect (OSTI)

    Jones, Carol C.; Gordon, Kelly L.

    2004-08-22

    This paper provides an overview of the research findings that will be used as the basis for changing customer buying behaviors and a recipe for success for lighting solutions that will yield both energy savings and non-energy benefits. The lighting energy savings of these new systems compared to strategies of the past is analyzed, along with a recommended market penetration strategy using market research and the dynamics of the construction market.

  1. Lighting Energy Efficiency in Parking Campaign | Department of Energy

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

    Energy Efficiency in Parking Campaign Lighting Energy Efficiency in Parking Campaign Commercial Buildings Integration Project for the 2013 Building Technologies Office's Program Peer Review commlbldgs06_sandahl_040213.pdf (1.01 MB) More Documents & Publications Better Buildings Alliance - 2013 BTO Peer Review Lighting and Electrical Team Leadership and Project Delivery - 2014 BTO Peer Review Buildings Performance Database - 2013 BTO Peer Review

  2. Garland Power & Light- Energy Efficiency Rebate Programs

    Office of Energy Efficiency and Renewable Energy (EERE)

    Residential customers also qualify for rebates when they install high efficiency window air conditioning units with an ENERGY STAR Rating or make weatherization improvements to already existing...

  3. Energy Department Awards Nearly $10 Million for Efficient Lighting

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

    Development | Department of Energy Nearly $10 Million for Efficient Lighting Development Energy Department Awards Nearly $10 Million for Efficient Lighting Development May 4, 2015 - 4:00pm Addthis NEWS MEDIA CONTACT (202) 586-4940 DOENews@hq.doe.gov Projects Designed to Save Consumers Money, Reduce Energy Consumption WASHINGTON - The Energy Department today announced nine research and development projects that will receive funding to support solid-state lighting (SSL) core technology

  4. Energy Department Invests More than $10 Million in Efficient Lighting

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

    Research and Development | Department of Energy More than $10 Million in Efficient Lighting Research and Development Energy Department Invests More than $10 Million in Efficient Lighting Research and Development June 10, 2016 - 5:41pm Addthis NEWS MEDIA CONTACT (202) 586-4940 Projects Designed to Save Consumers Money, Reduce Energy Consumption WASHINGTON - Building on the new commitments to the Global Lighting Challenge announced last week during the Clean Energy Ministerial, the Energy

  5. CBEA High-Efficiency Parking Structure Lighting Specification | Department

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

    of Energy CBEA High-Efficiency Parking Structure Lighting Specification CBEA High-Efficiency Parking Structure Lighting Specification A Commercial Building Energy Alliance Project, Version 1.1. Released 2/15/2012. creea_parking_structure_spec.pdf (245.84 KB) More Documents & Publications CBEA LED Site Lighting Specification - Version 1.3, Released 2/15/2012 LED T8 Replacement Lamps Model Specification for LED Roadway Luminaires, V2.0

  6. Dayton Power and Light - Business and Government Energy Efficiency...

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

    minimum federal and state mandated efficiency standards. Rebates will be paid within 30 days of an inspection of the system. Custom rebates are available to non-residential...

  7. Randolph EMC- Agricultural Efficient Lighting Rebate Program

    Broader source: Energy.gov [DOE]

    Agricultural members of Randolph EMC (REMC) who upgrade to energy-efficientCFL bulbs in agricultural facilities are eligible for an incentive to help cover the initial cost of installation. The...

  8. Purchasing Energy-Efficient Light Bulbs

    Broader source: Energy.gov [DOE]

    The Federal Energy Management Program (FEMP) provides acquisition guidance for light bulbs, a product category covered by ENERGY STAR. Federal laws and requirements mandate that agencies purchase ENERGY STAR qualified products or FEMP designated products in all product categories covered by these programs and in any acquisition actions that are not specifically exempted by law.

  9. EECBG Success Story: South Carolina Community Lights Up the Season with Energy-Efficient Holiday Lights

    Broader source: Energy.gov [DOE]

    A South Carolina community is proving that energy efficiency can improve the holidays by reducing energy and maintenance costs, thanks to its new LED holiday lights. Learn more.

  10. Green Light-Emitting Diode Makes Highly Efficient White Light; The Spectrum of Clean Energy Innovation (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-06-01

    Fact sheet describing NREL's green light emitting diode that can lead to higher efficiency white light used in indoor lighting applications.

  11. Measuring energy efficiency: Opportunities from standardization and common metrics

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

    Measuring energy efficiency: Opportunities from standardization and common metrics For 2016 EIA Energy Conference July 11, 2016 | Washington, D.C. By Stacy Angel, Energy Information Portfolio Analyst Carol White, Senior Energy Efficiency Analyst How is the importance of measuring energy efficiency changing? * The number of energy efficiency policies and programs is growing. * Common metrics help measure progress towards multiple objectives. * Clear metrics help consumers make informed energy

  12. Dayton Power and Light- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Dayton Power and Light offers rebates for heating and cooling to residential customers who purchase and install energy efficient products for the home. Eligible systems and measures include heat...

  13. Florida Power and Light- Residential Energy Efficiency Program

    Broader source: Energy.gov [DOE]

    Florida Power and Light (FPL) offers rebates to residential customers who implement certain energy efficiency improvements in eligible homes. HVAC rebates are available for the replacement of air...

  14. Peninsula Light Company- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Peninsula Light Company offers a rebate program for residential customers who want to install energy efficient products in homes. Rebates are provided for heat pump water heaters, heat pumps, duct...

  15. Reading Municipal Light Department- Business Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Reading Municipal Light Department (RMLD) offers energy efficiency incentives to eligible commercial and industrial customers. Rebates of up to $50,000 are available to customers who wish to reduce...

  16. Orcas Power & Light- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Orcas Power and Light Cooperative offers incentives for residential customers to pursue energy efficiency upgrades in eligible homes. Rebates are offered for Energy Star rated appliances, water...

  17. McMinnville Water & Light- Commercial Energy Efficiency Rebate Programs

    Office of Energy Efficiency and Renewable Energy (EERE)

    McMinnville Water and Light Company offers a variety of rebates for commercial and industrial customers to make energy efficient improvements to eligible facilities. MW&L offers rebates in...

  18. Inland Power & Light Company- Residential Energy Efficiency Rebate Programs

    Office of Energy Efficiency and Renewable Energy (EERE)

    Inland Power & Light offers a variety of rebates for the purchase of energy efficient equipment. Customers should see the program web site for rebate applications and full program details.

  19. Cedarburg Light & Water Utility- Residential Energy Efficiency Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Cedarburg Light & Water (CL&W) offers rebates to residential customers for a variety of energy-efficient equipment and upgrades.  Through Wisconsin Focus on Energy, CL&W provides...

  20. Chicopee Electric Light- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Chicopee Electric Light (CEL) offers a variety of incentives for its residential customers to increase the energy efficiency of participating homes. CEL provides rebates for heat pump water heaters...

  1. Maximizing Light Utilization Efficiency and Hydrogen Production in

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

    Microalgal Cultures, DOE Hydrogen Program FY 2010 Annual Progress Report | Department of Energy Maximizing Light Utilization Efficiency and Hydrogen Production in Microalgal Cultures, DOE Hydrogen Program FY 2010 Annual Progress Report Maximizing Light Utilization Efficiency and Hydrogen Production in Microalgal Cultures, DOE Hydrogen Program FY 2010 Annual Progress Report UCB will minimize, or truncate, the chlorophyll antenna size in green algae to maximize photobiological solar conversion

  2. EECBG Success Story: Playing Around with Lighting Efficiency

    Broader source: Energy.gov [DOE]

    In the city of Brea, California, the lighting in its Brea Junior High Park was becoming obsolete. Thanks to an Energy Efficiency and Conservation Block Grant (EECBG), the park is replacing and reducing the number of lights, which will save the city about $2,300 a year. Learn more.

  3. Estimate of federal relighting potential and demand for efficient lighting products

    SciTech Connect (OSTI)

    Shankle, S.A.; Dirks, J.A.; Elliott, D.B.; Richman, E.E.; Grover, S.E.

    1993-11-01

    The increasing level of electric utility rebates for energy-efficient lighting retrofits has recently prompted concern over the adequacy of the market supply of energy-efficient lighting products (Energy User News 1991). In support of the U.S. Department of Energy`s Federal Energy Management Program, Pacific Northwest Laboratory (PNL) has developed an estimate of the total potential for energy-efficient lighting retrofits in federally owned buildings. This estimate can be used to address the issue of the impact of federal relighting projects on the supply of energy-efficient lighting products. The estimate was developed in 1992, using 1991 data. Any investments in energy-efficient lighting products that occurred in 1992 will reduce the potential estimated here. This analysis proceeds by estimating the existing stock of lighting fixtures in federally owned buildings. The lighting technology screening matrix is then used to determine the minimum life-cycle cost retrofit for each type of existing lighting fixture. Estimates of the existing stock are developed for (1) four types of fluorescent lighting fixtures (2-, 3-, and 4-lamp, F40 4-foot fixtures, and 2-lamp, F96 8-foot fixtures, all with standard magnetic ballasts); (2) one type of incandescent fixture (a 75-watt single bulb fixture); and (3) one type of exit sign (containing two 20-watt incandescent bulbs). Estimates of the existing stock of lighting fixtures in federally owned buildings, estimates of the total potential demand for energy-efficient lighting products if all cost-effective retrofits were undertaken immediately, and total potential annual energy savings (in MWh and dollars), the total investment required to obtain the energy savings and the present value of the efficiency investment, are presented.

  4. Standard Energy Efficiency Data (SEED) Platform Homepage Screenshot

    Broader source: Energy.gov [DOE]

    The Standard Energy Efficiency Data (SEED) Platform™ is an open source software application that helps organizations easily manage data on the energy performance of large groups of buildings. This is a screenshot of the application homepage.

  5. Request for Information on Efficiency Standards for Natural Gas Compressors

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

    | Department of Energy Efficiency Standards for Natural Gas Compressors Request for Information on Efficiency Standards for Natural Gas Compressors Ormat Technologies is headquartered in Reno Nevada and designs and manufactures waste heat recovery units that are commonly applied on natural gas pipeline compressor stations Ormat EERE meeting memo (31.06 KB) More Documents & Publications DOE Meeting Memorandum: Ex Parte Communications Geothermal Energy Production with Co-produced and

  6. Standard Energy Efficiency Data (SEED) Platform - 2014 BTO Peer Review |

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

    Department of Energy Data (SEED) Platform - 2014 BTO Peer Review Standard Energy Efficiency Data (SEED) Platform - 2014 BTO Peer Review Project Objective The Standard Energy Efficiency Data (SEED) software application helps organizations easily manage data on the energy performance of large groups of buildings, thus also improving the consistency and interoperability of the data. The project's objectives this year are to: (1) complete development of a production-grade, first version of SEED

  7. High efficiency III-nitride light-emitting diodes

    DOE Patents [OSTI]

    Crawford, Mary; Koleske, Daniel; Cho, Jaehee; Zhu, Di; Noemaun, Ahmed; Schubert, Martin F; Schubert, E. Fred

    2013-05-28

    Tailored doping of barrier layers enables balancing of the radiative recombination among the multiple-quantum-wells in III-Nitride light-emitting diodes. This tailored doping enables more symmetric carrier transport and uniform carrier distribution which help to reduce electron leakage and thus reduce the efficiency droop in high-power III-Nitride LEDs. Mitigation of the efficiency droop in III-Nitride LEDs may enable the pervasive market penetration of solid-state-lighting technologies in high-power lighting and illumination.

  8. LED Holiday Lights: Festive, Safe, and Efficient! | Department of Energy

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

    LED Holiday Lights: Festive, Safe, and Efficient! LED Holiday Lights: Festive, Safe, and Efficient! November 23, 2010 - 6:30am Addthis Allison Casey Senior Communicator, NREL This week brings a day that many people look forward to all year-and I'm not talking about Thanksgiving, or Black Friday. I'm talking about that magical day when it's finally okay to drag the dusty boxes from the basement or attic, to lovingly sort and display your decorations, to untangle your light strings and set up the

  9. Maximizing Light Utilization Efficiency and Hydrogen Production in Microalgal Cultures

    SciTech Connect (OSTI)

    Melis, Anastasios

    2014-12-31

    The project addressed the following technical barrier from the Biological Hydrogen Production section of the Fuel Cell Technologies Program Multi-Year Research, Development and Demonstration Plan: Low Sunlight Utilization Efficiency in Photobiological Hydrogen Production is due to a Large Photosystem Chlorophyll Antenna Size in Photosynthetic Microorganisms (Barrier AN: Light Utilization Efficiency).

  10. Solid-State Lighting | Center for Energy Efficient Materials

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

    Solid-State Lighting Our goal is to advance the fundamental science and technology to both understand factors that limit efficiencies for light emitting diode-based lighting and to provide innovative and viable solutions to current roadblocks. We intend to achieve these goals by: (1) control and elucidation of the carrier loss mechanisms on nonpolar/semipolar GaN LEDs; (2) growth of defect-free bulk GaN crystals; and (3) full-spectrum lighting using an all semiconductor-based emission region;

  11. New Energy Efficiency Standards for External Power Supplies to Cut

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

    Consumers' Utility Bills | Department of Energy External Power Supplies to Cut Consumers' Utility Bills New Energy Efficiency Standards for External Power Supplies to Cut Consumers' Utility Bills February 3, 2014 - 12:30pm Addthis News Media Contact (202) 586-4940 WASHINGTON - Building on President Obama's State of the Union address, which called for reducing carbon pollution and helping communities move to greater energy efficiency, the Energy Department today announced new efficiency

  12. Efficient semiconductor light-emitting device and method

    DOE Patents [OSTI]

    Choquette, Kent D.; Lear, Kevin L.; Schneider, Jr., Richard P.

    1996-01-01

    A semiconductor light-emitting device and method. The semiconductor light-emitting device is provided with at least one control layer or control region which includes an annular oxidized portion thereof to channel an injection current into the active region, and to provide a lateral refractive index profile for index guiding the light generated within the device. A periodic composition grading of at least one of the mirror stacks in the device provides a reduced operating voltage of the device. The semiconductor light-emitting device has a high efficiency for light generation, and may be formed either as a resonant-cavity light-emitting diode (RCLED) or as a vertical-cavity surface-emitting laser (VCSEL).

  13. Efficient semiconductor light-emitting device and method

    DOE Patents [OSTI]

    Choquette, K.D.; Lear, K.L.; Schneider, R.P. Jr.

    1996-02-20

    A semiconductor light-emitting device and method are disclosed. The semiconductor light-emitting device is provided with at least one control layer or control region which includes an annular oxidized portion thereof to channel an injection current into the active region, and to provide a lateral refractive index profile for index guiding the light generated within the device. A periodic composition grading of at least one of the mirror stacks in the device provides a reduced operating voltage of the device. The semiconductor light-emitting device has a high efficiency for light generation, and may be formed either as a resonant-cavity light-emitting diode (RCLED) or as a vertical-cavity surface-emitting laser (VCSEL). 12 figs.

  14. EA-2020: Energy Efficiency Standards for New Federal Low-Rise...

    Office of Environmental Management (EM)

    0: Energy Efficiency Standards for New Federal Low-Rise Residential Buildings' Baseline Standards Update (RIN 1904-AD56) EA-2020: Energy Efficiency Standards for New Federal...

  15. South Carolina Community Lights Up the Season with Energy-Efficient...

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

    Community Lights Up the Season with Energy-Efficient Holiday Lights South Carolina Community Lights Up the Season with Energy-Efficient Holiday Lights December 20, 2011 - 1:12pm ...

  16. Microsoft PowerPoint - ZERH Lighting Efficiency - FINAL w bios

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

    READY HOME: LIGHTING EFFICIENCY Presented by: Brooke Silber, LC, IES, LEED AP - Jan & Brooke Luminae David Brignati, AIA, LEED AP - Newport Ventures High Efficacy Lighting in DOE Zero Energy Ready Home LEDs in High Performance Homes ... - Practical Experience * LEDs are increasingly used in DOE ZERHs * Design can be different... * Building integration can be different... * User experience should be different! BROOKE SILBER C. Brooke Silber, IES, LC, LEEDAP Principal, Jan & Brooke,

  17. High Efficiency LED Lamp for Solid-State Lighting

    SciTech Connect (OSTI)

    James Ibbetson

    2006-12-31

    This report contains a summary of technical achievements during a three-year project to demonstrate high efficiency, solid-state lamps based on gallium nitride/silicon carbide light-emitting diodes. Novel chip designs and fabrication processes are described for a new type of nitride light-emitting diode with the potential for very high efficiency. This work resulted in the demonstration of blue light-emitting diodes in the one watt class that achieved up to 495 mW of light output at 350 mA drive current, corresponding to quantum and wall plug efficiencies of 51% and 45%, respectively. When combined with a phosphor in Cree's 7090 XLamp package, these advanced blue-emitting devices resulted in white light-emitting diodes whose efficacy exceeded 85 lumens per watt. In addition, up to 1040 lumens at greater than 85 lumens per watt was achieved by combining multiple devices to make a compact white lamp module with high optical efficiency.

  18. Photovoltaic cell with light trapping for enhanced efficiency

    DOE Patents [OSTI]

    Brener, Igal; Fofang, Nche Tumasang; Luk, Ting S.

    2015-11-19

    The efficiency of a photovoltaic cell is enhanced by light trapping using Mie-scattering nanostructures. In one embodiment, an array of nanocylinders is formed on the front surface of a silicon film to enhance forward scattering into the film, and an array of nanocylinders is formed on the back surface to enhance backscattering so that more light is absorbed within the silicon film. In an alternate embodiment, a mirror layer is formed on the back surface of the silicon film to reflect light within the film back toward the front-surface nanocylinder array.

  19. Analysis of federal policy options for improving US lighting energy efficiency: Commercial and residential buildings

    SciTech Connect (OSTI)

    Atkinson, B.A.; McMahon, J.E.; Mills, E.; Chan, P.; Chan, T.W.; Eto, J.H.; Jennings, J.D.; Koomey, J.G.; Lo, K.W.; Lecar, M.; Price, L.; Rubinstein, F.; Sezgen, O.; Wenzel, T.

    1992-12-01

    The US Department of Energy (DOE) has recognized the opportunity to achieve energy, economic, and environmental benefits by promoting energy-efficient lighting through federal policies, including lighting standards, financial incentives, and information programs. To assist in this process, the Office of Conservation and Renewable Energy`s Office of Codes and Standards invited Lawrence Berkeley Laboratory to assess prospective national impacts for a variety of policy options. Some progress has already been made in developing lighting policies at both the federal and state levels. The US DOE`s Office of Building Technologies has evaluated lighting efficiency incentives as part of its analysis for the National Energy Strategy. Fluorescent and incandescent lamp standards are included in the national Energy Policy Act of 1992 (P.L. 102-486, October 24, 1992). A few states have analyzed or implemented lamp and luminaire standards. Many policy-related issues merit further investigation. For example, there is considerable debate over issues such as mandatory or voluntary standards versus component labeling and other education-oriented strategies. Several different technologies are involved that interact with each other-lamps (incandescent, compact fluorescent, and HID), ballasts (for fluorescent and HID lamps), and fixtures with reflectors and lenses. Control systems and operation patterns must also be considered (timers, automated dimming, or occupancy sensors). Lighting applications are diverse, ranging from offices, restaurants, hallways, hospital operating rooms, to exterior lights. Lighting energy use influences heating and cooling requirements in buildings. Successful lighting system design must also address interactions between architectural design elements and daylighting availability. Proper system installation and ongoing operation and maintenance are crucial. The economic aspects of the preceding points must also be considered for policy making.

  20. Analysis of federal policy options for improving US lighting energy efficiency: Commercial and residential buildings

    SciTech Connect (OSTI)

    Atkinson, B.A.; McMahon, J.E.; Mills, E.; Chan, P.; Chan, T.W.; Eto, J.H.; Jennings, J.D.; Koomey, J.G.; Lo, K.W.; Lecar, M.; Price, L.; Rubinstein, F.; Sezgen, O.; Wenzel, T.

    1992-12-01

    The US Department of Energy (DOE) has recognized the opportunity to achieve energy, economic, and environmental benefits by promoting energy-efficient lighting through federal policies, including lighting standards, financial incentives, and information programs. To assist in this process, the Office of Conservation and Renewable Energy's Office of Codes and Standards invited Lawrence Berkeley Laboratory to assess prospective national impacts for a variety of policy options. Some progress has already been made in developing lighting policies at both the federal and state levels. The US DOE's Office of Building Technologies has evaluated lighting efficiency incentives as part of its analysis for the National Energy Strategy. Fluorescent and incandescent lamp standards are included in the national Energy Policy Act of 1992 (P.L. 102-486, October 24, 1992). A few states have analyzed or implemented lamp and luminaire standards. Many policy-related issues merit further investigation. For example, there is considerable debate over issues such as mandatory or voluntary standards versus component labeling and other education-oriented strategies. Several different technologies are involved that interact with each other-lamps (incandescent, compact fluorescent, and HID), ballasts (for fluorescent and HID lamps), and fixtures with reflectors and lenses. Control systems and operation patterns must also be considered (timers, automated dimming, or occupancy sensors). Lighting applications are diverse, ranging from offices, restaurants, hallways, hospital operating rooms, to exterior lights. Lighting energy use influences heating and cooling requirements in buildings. Successful lighting system design must also address interactions between architectural design elements and daylighting availability. Proper system installation and ongoing operation and maintenance are crucial. The economic aspects of the preceding points must also be considered for policy making.

  1. Standard Energy Efficiency Database Platform - 2013 BTO Peer Review |

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

    Department of Energy Database Platform - 2013 BTO Peer Review Standard Energy Efficiency Database Platform - 2013 BTO Peer Review commlbldgs09_prindle_040313.pdf (1.03 MB) More Documents & Publications Buildings Performance Database - 2013 BTO Peer Review Commercial Buildings Integration Program Overview - 2013 BTO Peer Review Future Funding: Effective Models for Leveraging Public Funds

  2. Light Inspires Energy Efficient Building Design - News Feature | NREL

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

    Light Inspires Energy Efficient Building Design March 1, 2010 Photo of a man and a woman in a lab holding a window with tinted glass. Enlarge image NREL Researchers Dane Gillespie and Erin Whitney will get to see the windows they normally test in the lab used in a real world environment at the RSF. Credit: Pat Corkery Artists find inspiration in many ways. But for the artists (architects and researchers) working collaboratively to create the most energy efficient office space in the U.S., the

  3. Purchasing Energy-Efficient Light Commercial Heating and Cooling Equipment

    Broader source: Energy.gov [DOE]

    The Federal Energy Management Program (FEMP) provides acquisition guidance for commercial central air conditioners (CACs). This equipment falls under the light commercial heating and cooling equipment product category covered by ENERGY STAR efficiency requirements. Federal laws and requirements mandate that agencies purchase ENERGY STAR-qualified products or FEMP-designated products in all product categories covered by these programs and in any acquisition actions that are not specifically exempted by law.

  4. Scalable Light Module for Low-Cost, High-Efficiency Light- Emitting Diode Luminaires

    SciTech Connect (OSTI)

    Tarsa, Eric

    2015-08-31

    During this two-year program Cree developed a scalable, modular optical architecture for low-cost, high-efficacy light emitting diode (LED) luminaires. Stated simply, the goal of this architecture was to efficiently and cost-effectively convey light from LEDs (point sources) to broad luminaire surfaces (area sources). By simultaneously developing warm-white LED components and low-cost, scalable optical elements, a high system optical efficiency resulted. To meet program goals, Cree evaluated novel approaches to improve LED component efficacy at high color quality while not sacrificing LED optical efficiency relative to conventional packages. Meanwhile, efficiently coupling light from LEDs into modular optical elements, followed by optimally distributing and extracting this light, were challenges that were addressed via novel optical design coupled with frequent experimental evaluations. Minimizing luminaire bill of materials and assembly costs were two guiding principles for all design work, in the effort to achieve luminaires with significantly lower normalized cost ($/klm) than existing LED fixtures. Chief project accomplishments included the achievement of >150 lm/W warm-white LEDs having primary optics compatible with low-cost modular optical elements. In addition, a prototype Light Module optical efficiency of over 90% was measured, demonstrating the potential of this scalable architecture for ultra-high-efficacy LED luminaires. Since the project ended, Cree has continued to evaluate optical element fabrication and assembly methods in an effort to rapidly transfer this scalable, cost-effective technology to Cree production development groups. The Light Module concept is likely to make a strong contribution to the development of new cost-effective, high-efficacy luminaries, thereby accelerating widespread adoption of energy-saving SSL in the U.S.

  5. New Energy Efficiency Standards for Commercial Refrigeration Equipment to

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

    Cut Businesses' Energy Bills and Carbon Pollution | Department of Energy for Commercial Refrigeration Equipment to Cut Businesses' Energy Bills and Carbon Pollution New Energy Efficiency Standards for Commercial Refrigeration Equipment to Cut Businesses' Energy Bills and Carbon Pollution February 28, 2014 - 10:45am Addthis News Media Contact (202) 586-4940 WASHINGTON - Building on President Obama's State of the Union address and the Administration's Climate Action Plan, the Energy Department

  6. Lighting

    Broader source: Energy.gov [DOE]

    One of the simplest ways to save energy and money is to switch to energy-efficient lights. Learn about your lighting choices that can save you money.

  7. Fact #571: May 18, 2009 Light Truck CAFE Standards - 2006 Reformation |

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

    Department of Energy 1: May 18, 2009 Light Truck CAFE Standards - 2006 Reformation Fact #571: May 18, 2009 Light Truck CAFE Standards - 2006 Reformation In 2006 the National Highway Traffic Safety Administration (NHTSA) established new requirements for the light truck Corporate Average Fuel Economy (CAFE) standards. In the new rule, there are Unreformed CAFE standards for model years (MY) 2008 through 2010 using the same CAFE calculations as in the past, and there are Reformed CAFE standards

  8. Effect of Energy Efficiency Standards on Natural Gas Prices

    SciTech Connect (OSTI)

    Carnall, Michael; Dale, Larry; Lekov, Alex

    2011-07-26

    A primary justification for the establishment of energy efficiency standards for home appliances is the existence of information deficiencies and externalities in the market for appliances. For example, when a long-term homeowner purchases a new gas-fired water heater, she will maximize the value of her purchase by comparing the life-cycle cost of ownership of available units, including both total installed cost - purchase price plus installation costs - and operating cost in the calculus. Choice of the appliance with the lowest life-cycle costs leads to the most economically efficient balance between capital cost and fuel cost. However, if the purchaser's expected period of ownership is shorter than the useful life of the appliance, or the purchaser does not pay for the fuel used by the appliance, as is often the case with rental property, fuel cost will be external to her costs, biasing her decision toward spending less on fuel efficiency and resulting in the purchase of an appliance with greater than optimal fuel usage. By imposing an efficiency standard on appliances, less efficient appliances are made unavailable, precluding less efficient purchases and reducing fuel usage. The reduction in fuel demanded by residential users affects the total demand for such fuels as natural gas, for example. Reduced demand implies that residential customers are willing to purchase less gas at each price level. That is, the demand curve, labeled D{sub 0} in Figure 1, shifts to the left to D{sub 1}. If there is no change in the supply function, the supply curve will intersect the demand curve at a lower price. Residential demand is only one component of the total demand for natural gas. It is possible that total demand will decline very little if demand in other sectors increases substantially in response to a decline in the price. If demand does decrease, modeling studies generally confirm the intuition that reductions in demand for natural gas will result in reductions in its

  9. Thin Film Packaging Solutions for High Efficiency OLED Lighting Products

    SciTech Connect (OSTI)

    2008-06-30

    The objective of the 'Thin Film Packaging Solutions for High Efficiency OLED Lighting Products' project is to demonstrate thin film packaging solutions based on SiC hermetic coatings that, when applied to glass and plastic substrates, support OLED lighting devices by providing longer life with greater efficiency at lower cost than is currently available. Phase I Objective: Demonstrate thin film encapsulated working phosphorescent OLED devices on optical glass with lifetime of 1,000 hour life, CRI greater than 75, and 15 lm/W. Phase II Objective: Demonstrate thin film encapsulated working phosphorescent OLED devices on plastic or glass composite with 25 lm/W, 5,000 hours life, and CRI greater than 80. Phase III Objective: Demonstrate 2 x 2 ft{sup 2} thin film encapsulated working phosphorescent OLED with 40 lm/W, 10,000 hour life, and CRI greater than 85. This report details the efforts of Phase III (Budget Period Three), a fourteen month collaborative effort that focused on optimization of high-efficiency phosphorescent OLED devices and thin-film encapsulation of said devices. The report further details the conclusions and recommendations of the project team that have foundation in all three budget periods for the program. During the conduct of the Thin Film Packaging Solutions for High Efficiency OLED Lighting Products program, including budget period three, the project team completed and delivered the following achievements: (1) a three-year marketing effort that characterized the near-term and longer-term OLED market, identified customer and consumer lighting needs, and suggested prototype product concepts and niche OLED applications lighting that will give rise to broader market acceptance as a source for wide area illumination and energy conservation; (2) a thin film encapsulation technology with a lifetime of nearly 15,000 hours, tested by calcium coupons, while stored at 16 C and 40% relative humidity ('RH'). This encapsulation technology was characterized

  10. Quantum efficiency harmonic analysis of exciton annihilation in organic light emitting diodes

    SciTech Connect (OSTI)

    Price, J. S.; Giebink, N. C.

    2015-06-29

    Various exciton annihilation processes are known to impact the efficiency roll-off of organic light emitting diodes (OLEDs); however, isolating and quantifying their contribution in the presence of other factors such as changing charge balance continue to be a challenge for routine device characterization. Here, we analyze OLED electroluminescence resulting from a sinusoidal dither superimposed on the device bias and show that nonlinearity between recombination current and light output arising from annihilation mixes the quantum efficiency measured at different dither harmonics in a manner that depends uniquely on the type and magnitude of the annihilation process. We derive a series of analytical relations involving the DC and first harmonic external quantum efficiency that enable annihilation rates to be quantified through linear regression independent of changing charge balance and evaluate them for prototypical fluorescent and phosphorescent OLEDs based on the emitters 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran and platinum octaethylporphyrin, respectively. We go on to show that, in most cases, it is sufficient to calculate the needed quantum efficiency harmonics directly from derivatives of the DC light versus current curve, thus enabling this analysis to be conducted solely from standard light-current-voltage measurement data.

  11. High-Efficiency Parking Lighting in Federal Facilities

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

    High-Efficiency Parking Lighting in Federal Facilities FEdEraL EnErgy ManagEMEnt PrograM MC Realty Group Saving Energy and Money with the IRS MC Realty Group, LLC, won a 2014 LEEP Award for cutting energy use by 76% at the Internal Revenue Service (IRS) Facility Parking Garage in Kansas City, Missouri. MC Realty replaced 1,500 metal halide fxtures with an equal number of T8 fuorescent fxtures in the fve-story parking structure to cut energy use by 2 million kilowatt-hours (kWh) annually, which

  12. DOE Science Showcase - Read about Energy-Efficient Lighting ...

    Office of Scientific and Technical Information (OSTI)

    FAQ of Overview of Solid-State Lighting Solid-State Lighting: SSL Quality Advocates What ... of solid-state lighting through end-of-life design Solid state lighting: the ...

  13. High-Efficiency Clean Combustion in Light-Duty Multi-Cylinder...

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

    High-Efficiency Clean Combustion in Light-Duty Multi-Cylinder Diesel Engines High-Efficiency Clean Combustion in Light-Duty Multi-Cylinder Diesel Engines 2010 DOE Vehicle ...

  14. High-Efficiency and Stable White Organic Light-Emitting Diode...

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

    Efficiency and Stable White Organic Light-Emitting Diode Using a Single Emitter High-Efficiency and Stable White Organic Light-Emitting Diode Using a Single Emitter Lead Performer: ...

  15. Webinar: Award-Winning LEEP Campaign Sites Demonstrate Big Savings in High Efficiency Parking Lighting

    Broader source: Energy.gov [DOE]

    The Lighting Energy Efficiency in Parking (LEEP) Campaign is saving nearly 45 million kilowatt-hours and $4 million annually by upgrading its partners to high efficiency lighting in over 500,000 parking spaces.

  16. Buying the Perfect Energy-Efficient Light Bulb in 5 Easy Steps

    Broader source: Energy.gov [DOE]

    Purchasing an energy-efficient light bulb doesn't have to be difficult. With these five easy steps, you can find the best energy-efficient light bulb for your home!

  17. An International Survey of Electric Storage Tank Water Heater Efficiency and Standards

    SciTech Connect (OSTI)

    Johnson, Alissa; Lutz, James; McNeil, Michael A.; Covary, Theo

    2013-11-13

    Water heating is a main consumer of energy in households, especially in temperate and cold climates. In South Africa, where hot water is typically provided by electric resistance storage tank water heaters (geysers), water heating energy consumption exceeds cooking, refrigeration, and lighting to be the most consumptive single electric appliance in the home. A recent analysis for the Department of Trade and Industry (DTI) performed by the authors estimated that standing losses from electric geysers contributed over 1,000 kWh to the annual electricity bill for South African households that used them. In order to reduce this burden, the South African government is currently pursuing a programme of Energy Efficiency Standards and Labelling (EES&L) for electric appliances, including geysers. In addition, Eskom has a history of promoting heat pump water heaters (HPWH) through incentive programs, which can further reduce energy consumption. This paper provides a survey of international electric storage water heater test procedures and efficiency metrics which can serve as a reference for comparison with proposed geyser standards and ratings in South Africa. Additionally it provides a sample of efficiency technologies employed to improve the efficiency of electric storage water heaters, and outlines programs to promote adoption of improved efficiency. Finally, it surveys current programs used to promote HPWH and considers the potential for this technology to address peak demand more effectively than reduction of standby losses alone

  18. Buildings Energy Data Book: 7.3 Efficiency Standards for Residential...

    Buildings Energy Data Book [EERE]

    1 Efficiency Standards for Residential Central Air Conditioners and Heat Pumps (1) Type ... prior to January 23, 2010. 3) Seasonal Energy Efficiency Ratio. 4) Heating Seasonal ...

  19. State Energy Efficiency Resource Standards: Design, Status, and Impacts

    SciTech Connect (OSTI)

    Steinberg, D.; Zinaman, O.

    2014-05-01

    An energy efficiency resource standard (EERS) is a policy that requires utilities or other entities to achieve a specified amount of energy savings through customer energy efficiency programs within a specified timeframe. EERSs may apply to electricity usage, natural gas usage, or both. This paper provides an overview of the key design features of EERSs for electricity, reviews the variation in design of EERSs across states, and provides an estimate of the amount of savings required by currently specified EERSs in each state. As of December, 2013, 23 states have active and binding EERSs for electricity. We estimate that state EERSs will require annual electricity savings of approximately 8-11% of total projected demand by 2020 in states with EERSs, however the level of savings targeted by the policies varies significantly across states. In addition to the variation in targeted savings, the design of EERSs varies significantly across states leading to differences in the suite of incentives created by the policy, the flexibility of compliance with the policy, the balance of benefits and costs of the policy between producers and consumers, and the certainty with which the policy will drive long-term savings.

  20. An ultra-efficient energy transfer beyond plasmonic light scattering

    SciTech Connect (OSTI)

    Fu, Sze-Ming; Zhong, Yan-Kai; Lin, Albert

    2014-11-14

    The energy transfer between nano-particles is of great importance for, solar cells, light-emitting diodes, nano-particle waveguides, and other photonic devices. This study shows through novel design and algorithm optimization, the energy transfer efficiency between plasmonic and dielectric nano-particles can be greatly improved. Using versatile designs including core-shell wrapping, supercells and dielectric mediated plasmonic scattering, 0.05 dB/μm attenuation can be achieved, which is 20-fold reduction over the baseline plasmonic nano-particle chain, and 8-fold reduction over the baseline dielectric nano-particle chain. In addition, it is also found that the dielectric nano-particle chains can actually be more efficient than the plasmonic ones, at their respective optimized geometry. The underlying physics is that although plasmonic nano-particles provide stronger coupling and field emission, the effect of plasmonic absorption loss is actually more dominant resulting in high attenuation. Finally, the group velocity for all design schemes proposed in this work is shown to be maintained above 0.4c, and it is found that the geometry optimization for transmission also boosts the group velocity.

  1. U.S. Department of Energy and International Association of Lighting Designers Partner to Improve Energy Efficiency in Lighting Systems

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) and the International Association of Lighting Designers (IALD) signed a Memorandum of Understanding (MOU) in November 2008 to work cooperatively toward improving the efficient use of energy by lighting equipment and systems. The MOU emphasizes the importance of minimizing the impact of energy use on the environment in support of DOE SSL programs on lighting quality.

  2. Florida Power and Light- Business Energy Efficiency Rebates

    Broader source: Energy.gov [DOE]

    Florida Power and Light (FPL) offers incentives for its business customers to upgrade the HVAC system, building envelope, water heating, refrigeration and lighting systems. The individual rebates...

  3. Heavy standard model-like Higgs boson and a light stop fromYukawa...

    Office of Scientific and Technical Information (OSTI)

    Heavy standard model-like Higgs boson and a light stop from Yukawa-deflected gauge mediation Citation Details In-Document Search Title: Heavy standard model-like Higgs boson and a ...

  4. EERE Success Story—Nationwide: New Efficiency Standards for Power Supplies Anticipate Energy Savings

    Broader source: Energy.gov [DOE]

    New energy efficiency standards for external power supplies will reduce energy consumption, energy bills, and carbon emissions.

  5. EA-2001: Energy Efficiency Standards for New Federal Commercial...

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

    This rule updates the baseline Federal commercial standard to the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) Standard 90.1-2013. PUBLIC ...

  6. ISSUANCE 2015-06-25: Energy Conservation Program: Energy Conservation Standards for Ceiling Fan Light Kits, Notice of Proposed Rulemaking

    Broader source: Energy.gov [DOE]

    Energy Conservation Program: Energy Conservation Standards for Ceiling Fan Light Kits, Notice of Proposed Rulemaking

  7. Replacement of Lighting Fixtures with LED Energy Efficient Lights at the Parking Facility, Milwaukee, Wisconsin

    SciTech Connect (OSTI)

    David Brien

    2012-06-21

    The Forest County Potawatomi Community (FCPC or Tribe) owns a six-story parking facility adjacent to its Potawatomi Bingo Casino (the Casino) in Milwaukee, Wisconsin, as well as a valet parking facility under the Casino (collectively, the Parking Facility). The Parking Facility contained 205-watt metal halide-type lights that, for security reasons, operated 24 hours per day, 7 days per week. Starting on August 30, 2010, the Tribe replaced these fixtures with 1,760 state-of-the-art, energy efficient 55-Watt LED lights. This project resulted in an immediate average reduction in monthly peak demand of 238 kW over the fourth quarter of 2010. The average reduction in monthly peak demand from October 1 through December 31, 2010 translates into a forecast annual electrical energy reduction of approximately 1,995,000 kWh or 47.3% of the pre-project demand. This project was technically effective, economically feasible, and beneficial to the public not only in terms of long term energy efficiency and associated emissions reductions, but also in the short-term jobs provided for the S.E. Wisconsin region. The project was implemented, from approval by U.S. Department of Energy (DOE) to completion, in less than 6 months. The project utilized off-the-shelf proven technologies that were fabricated locally and installed by local trade contractors.

  8. EERE Success Story-LED Lighting in the Classroom for Energy Efficiency

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

    and Enhanced Learning | Department of Energy LED Lighting in the Classroom for Energy Efficiency and Enhanced Learning EERE Success Story-LED Lighting in the Classroom for Energy Efficiency and Enhanced Learning July 21, 2016 - 12:00pm Addthis EERE Success Story—LED Lighting in the Classroom for Energy Efficiency and Enhanced Learning EERE Success Story—LED Lighting in the Classroom for Energy Efficiency and Enhanced Learning EERE Success Story-LED Lighting in the Classroom for

  9. Development of UV-LED Phosphor Coatings for High Efficiency Solid State Lighting

    SciTech Connect (OSTI)

    U. Happek

    2005-01-01

    The University of Georgia, in collaboration with GE Global Research, is investigating the relevant quenching mechanism of phosphor coatings used in white light devices based on UV LEDs in a focused eighteen month program. The final goal is the design of high-efficacy white UV-LEDs through improved and optimized phosphor coatings. At the end of the first year, we have reached a fundamental understanding of quenching processes in UV-LED phosphors and have observed severe quenching in standard devices under extreme operating conditions. Relationships are being established that describe the performance of the phosphor as a function of photon flux, temperature, and phosphor composition. These relationships will provide a road map for the design of efficient white light LEDs during the final six months of the project.

  10. California Greenhouse Gas Emissions Standards for Light-Duty Vehicles (Update) (released in AEO2006)

    Reports and Publications (EIA)

    2006-01-01

    The state of California was given authority under the Clean Air Act Amendments of 1990 (CAAA90) to set emissions standards for light-duty vehicles that exceed federal standards. In addition, other states that do not comply with the National Ambient Air Quality Standards (NAAQS) set by the Environmental Protection Agency under CAAA90 were given the option to adopt Californias light-duty vehicle emissions standards in order to achieve air quality compliance. CAAA90 specifically identifies hydrocarbon, carbon monoxide, and NOx as vehicle-related air pollutants that can be regulated. California has led the nation in developing stricter vehicle emissions standards, and other states have adopted the California standards.

  11. Proposed Revisions to Light Truck Fuel Economy Standard (released in AEO2006)

    Reports and Publications (EIA)

    2006-01-01

    In August 2005, the National Highway Traffic Safety Administration (NHTSA) published proposed reforms to the structure of CAFE standards for light trucks and increases in light truck Corporate Average Fuel Economy (CAFE) standards for model years 2008 through 201. Under the proposed new structure, NHTSA would establish minimum fuel economy levels for six size categories defined by the vehicle footprint (wheelbase multiplied by track width), as summarized in Table 3. For model years 2008 through 2010, the new CAFE standards would provide manufacturers the option of complying with either the standards defined for each individual footprint category or a proposed average light truck fleet standard of 22.5 miles per gallon in 2008, 23.1 miles per gallon in 2009, and 23.5 miles per gallon in 2010. All light truck manufacturers would be required to meet an overall standard based on sales within each individual footprint category after model year 2010.

  12. Cedarburg Light & Water Utility- Commercial Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    The Request for Proposals (RFP) for Energy Efficiency program is designed to encourage investment by large commercial and industrial utility customers in energy efficient improvements. Up to $2...

  13. Materials and architectures for efficient harvesting of singlet and triplet excitons for white light emitting OLEDs

    DOE Patents [OSTI]

    Thompson, Mark E; Forrest, Stephen

    2015-02-03

    The present invention relates to organic light emitting devices (OLEDs), and more specifically to OLEDS that emit light using a combination of fluorescent emitters and phosphorescent emitters for the efficient utilization of all of the electrically generated excitons.

  14. Westinghouse Pays $50,000 Civil Penalty to Resolve Light Bulb Efficiency Violations

    Broader source: Energy.gov [DOE]

    The Department of Energy has successfully resolved the enforcement case against Westinghouse Lighting Corporation for failure to certify its light bulbs as compliant with DOE’s federal efficiency...

  15. Dayton Power and Light- Business and Government Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Dayton Power and Light's (DP&L) non-residential electricity customers are eligible for a wide range of energy efficient technology rebates. Rebates are available for lighting, heating and...

  16. Next Generation Luminaires: Recognizing Innovative, Energy-Efficient Commercial Lighting Luminaires

    SciTech Connect (OSTI)

    2013-04-01

    Fact sheet that describes the Next Generation Luminaires SSL lighting design competition, which recognizes excellence in technical innovation and design of high-quality, energy-efficient commercial lighting, both indoor and outdoor.

  17. Cheyenne Light, Fuel and Power (Electric)- Residential Energy Efficiency Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Cheyenne Light, Fuel and Power offers incentives to electric customers who wish to install energy efficient equipment in participating homes. Incentives are available for CFL and LED light bulbs,...

  18. Seattle City Light- Multi-Family Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Seattle City Light provides incentives for multi-family housing properties with 5 or more units to increase their energy efficiency. Rebates are offered for common area lighting and weatherization...

  19. LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC

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

    Engineering Service Center | Department of Energy LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC Engineering Service Center LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC Engineering Service Center Document details new lighting technology that reduces energy consumption and reduces maintenance, while providing effective illumination. Download the new lighting technology document. (1.07 MB) More Documents & Publications Effective White

  20. High Efficiency Clean Combustion in Multi-Cylinder Light-Duty...

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

    09 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer ... High-Efficiency Clean Combustion in Light-Duty Multi-Cylinder Diesel Engines High ...

  1. Alliant Energy Interstate Power and Light (Gas and Electric)- Farm Equipment Energy Efficiency Incentives

    Broader source: Energy.gov [DOE]

    Interstate Power and Light (Alliant Energy) offers prescriptive rebates for a variety of energy efficient products for agricultural customers. In addition to these incentives, IPL offers a Farm...

  2. EERE Success Story-LED Lighting in the Classroom for Energy Efficiency...

    Energy Savers [EERE]

    easily controllable, because it's based on semiconductors rather than on filaments, plasma, or gas. "In addition to demonstrating the excellent efficiency of LED lighting ...

  3. North Branch Municipal Water & Light- Commercial & Industrial Energy Efficiency Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    North Branch Municipal Water & Light provides incentives for its commercial and industrial customers to improve the energy efficiency of facilities. Rebates are available for a variety of...

  4. Alliant Energy Interstate Power and Light (Gas)- Residential Energy Efficiency Rebate Programs

    Office of Energy Efficiency and Renewable Energy (EERE)

    Interstate Power and Light (Alliant Energy) offers residential energy efficiency rebates to Iowa customers for a variety of home upgrades. Rebates are available for certain heating, insulation,...

  5. Alliant Energy Interstate Power and Light (Electric)- Residential Energy Efficiency Rebate Programs

    Office of Energy Efficiency and Renewable Energy (EERE)

    Interstate Power and Light (Alliant Energy) offers residential energy efficiency rebates for Iowa customers for a variety of technologies. Rebates are available for certain HVAC equipment,...

  6. McMinnville Water and Light- Residential Energy Efficiency Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    McMinnville Water and Light (MWL) offers rebates on energy efficient homes, appliances and equipment to residential customers. Rebates are valid on: 

  7. Nationwide: New Efficiency Standards for Power Supplies Anticipate...

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

    effect in 2016. Over the next 30 years, the standards are expected to reduce national energy consumption by nearly one quadrillion British thermal units, reduce the energy...

  8. Carbon Power & Light - Residential and Commercial Energy Efficiency...

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

    EE Maximum Rebate Water Heater: 75 Program Info Sector Name Utility Administrator Carbon Power & Light, Inc. Website http:www.carbonpower.comrebates.html State Wyoming...

  9. DOE Science Showcase - Read about Energy-Efficient Lighting ...

    Office of Scientific and Technical Information (OSTI)

    Multi-Year Program Plan FY'09-FY'15 Solid-State Lighting Research and Development Novel Smart Windows Based on Transparent Phosphorescent OLEDs Illuminating Solar Decathlon Homes: ...

  10. Forest Grove Light & Power- Energy Efficiency Rebate Programs

    Broader source: Energy.gov [DOE]

    Forest Grove Light & Power offers a variety of rebates through Conservation Services Department. Rebates vary based on technology, and are available to residential, commercial, and/or...

  11. Chicopee Electric Light- Commercial Energy Efficiency Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Chicopee Electric Light Department (CELD) is participating in the Massachusetts Municipal Whoesale Electric Company's Green Opportunity Proagram to encourage non-residential, commercial, and...

  12. Seattle City Light- Residential Energy Efficiency Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Seattle City Light provides rebates to its customers for energy audits and purchasing and installing energy saving clothes washers, refrigerators, heat pump water heaters, ductless heat pumps,...

  13. Concord Municipal Light Plant- Residential Energy Efficiency Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Concord Municipal Light Plant (CMLP) offers residential customers rebates on home weatherization, air conditioning system upgrades, and the purchase of LED bulbs.

  14. How Energy-Efficient Light Bulbs Compare with Traditional Incandescent...

    Energy Savers [EERE]

    Light Bulbs Compare with Traditional ... The table below compares a 60 watt (W) traditional ... *Based on 2 hrsday of usage, an electricity rate of 11 ...

  15. Seattle City Light - Multi-Family Residential Energy Efficiency...

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

    for common area lighting and weatherization measures including the installation of dual-pane windows and increased insulation, although insulation-only jobs are not eligible...

  16. Kansas City Power & Light - Commercial/Industrial Energy Efficiency...

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

    Rebate 250,000 per customer per year Program Info Sector Name Utility Administrator Kansas City Power & Light Website http:www.kcpl.comsave-energy-and-moneyfor-business...

  17. U.S. Lighting Market Characterization Volume II: Energy Efficient...

    Office of Scientific and Technical Information (OSTI)

    Multiyear study to evaluate light sources and identify opportunities for saving energy. This ... and Renewable Energy (EERE), Building Technologies Office (EE-5B) Country of ...

  18. Duquesne Light Company- Commercial and Industrial Energy Efficiency Program

    Broader source: Energy.gov [DOE]

     Duquesne Light has partnered with conservation service providers to work with specific segments of customers. These conservation service providers can assist customers with energy audits, project...

  19. Seattle City Light- Commercial Energy Efficiency Rebate Programs

    Office of Energy Efficiency and Renewable Energy (EERE)

    Seattle City Light offers a variety of rebates to commercial and industrial customers through the Energy Smart Services Program. Energy Smart Services are available to commercial businesses,...

  20. Cheyenne Light, Fuel and Power (Gas)- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Cheyenne Light, Fuel and Power offers incentives to gas customers who construct new energy efficient homes or install energy efficient equipment in existing homes. Incentives are available for:

  1. Enforcing Energy-Efficiency Standards | Department of Energy

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

    ... including an unprecedented 27 new penalty actions announced today against companies ... Aggressive Energy Efficiency Enforcement Effort with 20 New Proposed Penalty Notices

  2. Standard Measurement & Verification Plan for Lighting Equipment Retrofit or Replacement Projects

    SciTech Connect (OSTI)

    Richman, Eric E.

    2009-11-04

    This document provides a framework for a standard Measurement and Verification (M&V) plan for lighting projects. It was developed to support cost-effective retrofits (partial and complete replacements) of lighting systems and is intended to provide a foundation for an M&V plan for a lighting retrofit utilizing a "best practice" approach, and to provide guidance to site owners, contractors, and other involved organizations on what is essential for a robust M&V plan for lighting projects. This document provides examples of appropriate elements of an M&V plan, including the calculation of expected energy savings. The standard M&V plan, as provided, also allows for consistent comparison with other similar lighting projects. Although intended for lighting retrofit applications, M&V plans developed per this framework document may also be used for other non-lighting technology retrofits and new installations.

  3. Clothes washer standards in China -- The problem of water andenergy trade-offs in establishing efficiency standards

    SciTech Connect (OSTI)

    Biermayer, Peter J.; Lin, Jiang

    2004-05-19

    Currently the sales of clothes washers in China consist ofseveral general varieties. Some use more energy (with or withoutincluding hot water energy use) and some use more water. Both energy andwater are in short supply in China. This poses the question - how do youtrade off water versus energy in establishing efficiency standards? Thispaper discusses how China dealt with this situation and how itestablished minimum efficiency standards for clothes washers.

  4. Interactions between residential efficiency standards and fuel choice

    SciTech Connect (OSTI)

    Lee, A.D. )

    1991-08-01

    The home buyer brings to the decision an elaborate set of preferences, perceptions, conditions, and attitudes. The homes from which the buyer can choose offer bundles of attributes including location, price, size, energy efficiency, and age. Programs designed to increase residential energy efficiency alter the mix of attributes offered. Ultimately, the effects and penetration of such programs depend on how the altered mix of attributes interacts with buyers' characteristics. One technique for modeling buyer responses to products with different mixes of attributes is conjoint analysis. This technique has been applied primarily in marketing research studies, usually designed to estimate market shares for new consumer products. This paper presents the results of an application of this technique to a housing market in which residential energy-efficiency programs have been instituted to improve the efficiency of new, electrically heated homes. The conjoint analysis methodology permits the analyst to unbundle'' the characteristics of homes and determine how individual characteristics affect the purchase decision. This unbundling is essential for determining how energy efficiency affects buyer choice, and what penetration rates energy-efficiency programs are likely to achieve. When programs are not fuel-blind, it is especially important to unbundle housing characteristics because the programs may affect not only energy-efficiency choice, but also fuel choice. 4 refs., 3 tabs.

  5. City of Asheville- Efficiency Standards for City Buildings

    Broader source: Energy.gov [DOE]

    In April 2007, the Asheville City Council adopted carbon emission reduction goals and set LEED standards for new city buildings. The council committed to reducing carbon emissions by 2% per year...

  6. Enhancement in light emission and electrical efficiencies of a silicon nanocrystal light-emitting diode by indium tin oxide nanowires

    SciTech Connect (OSTI)

    Huh, Chul, E-mail: chuh@etri.re.kr; Kim, Bong Kyu; Ahn, Chang-Geun; Kim, Sang-Hyeob [IT Convergence Technology Research Laboratory, Electronics and Telecommunications Research Institute, Daejeon 305-350 (Korea, Republic of); Choi, Chel-Jong [Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756 (Korea, Republic of)

    2014-07-21

    We report an enhancement in light emission and electrical efficiencies of a Si nanocrystal (NC) light-emitting diode (LED) by employing indium tin oxide (ITO) nanowires (NWs). The formed ITO NWs (diameter?light output power and wall-plug efficiency from the Si NC LED were enhanced by 45% and 38%, respectively. This was originated from an enhancement in the escape probability of the photons generated in the Si NCs due to multiple scatterings at the surface of ITO NWs acting as a light waveguide. We show here that the use of the ITO NWs can be very useful for realizing a highly efficient Si NC LED.

  7. Standard Measurement and Verification Plan for Lighting Retrofit Projects for Buildings and Building Sites

    SciTech Connect (OSTI)

    Richman, Eric E.

    2012-10-31

    This document provides a framework for standard measurement and verification (M&V) of lighting retrofit and replacement projects. It was developed to provide site owners, contractors, and other involved organizations with the essential elements of a robust M&V plan for lighting projects. It includes details on all aspects of effectively measuring light levels of existing and post-retrofit projects, conducting power measurement, and developing cost-effectiveness analysis. This framework M&V plan also enables consistent comparison among similar lighting projects, and may be used to develop M&V plans for non--lighting-technology retrofits and new installations.

  8. Cape Light Compact- Commercial Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Through a multi-member partnership, Cape Light Compact (CLC) and Mass Save offer a variety of financial incentives for commercial and industrial facilities. Custom rebate options are available for...

  9. Playing Around with Lighting Efficiency | Department of Energy

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

    amount of energy the city needs to power the lights and saving about 2,300 a year. The city will also receive a full set of replacements after 5,000 hours - the typical life of...

  10. Purchasing Energy-Efficient Light Bulbs | Department of Energy

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

    Coal-burning power plants emit mercury into the environment; using ENERGY ... Get a list of ENERGY STAR certified light bulbs. Make ... By using less electricity from coal-fired power ...

  11. DOE_EnergyEfficiencyStandardsForLargeVolumeWaterHeaters.pdf

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

    and information on the use of electric thermal storage water heaters in utility demand response programs, and on the impact that the energy efficiency standards established by ...

  12. L Prize(tm): The Race for Super Efficient Light Bulbs | Department of Energy

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

    L Prize(tm): The Race for Super Efficient Light Bulbs L Prize(tm): The Race for Super Efficient Light Bulbs This September 23, 2008 webcast provided an overview of the Bright Tomorrow Lighting Prize (L Prize) technology competition. The L Prize calls for super-efficient SSL products to replace two of the most common light bulbs used today: the 60-watt incandescent and the PAR-38 halogen reflector. Kelly Gordon, Pacific Northwest National Laboratory, kicked off the webcast with an overview of the

  13. Pathways to Ultra-Efficient Solid-State Lighting (invited)

    Office of Scientific and Technical Information (OSTI)

    Funding: SSLS EFRC, Department of Energy, Office of Basic Energy Sciences Sandia ... Benefits of lasers for SSL Bridging the "green-yellow gap" in LED efficiency A. Materials ...

  14. Energy Department Invests More Than $10 Million in Efficient Lighting R&D |

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

    Department of Energy More Than $10 Million in Efficient Lighting R&D Energy Department Invests More Than $10 Million in Efficient Lighting R&D June 13, 2014 - 8:29am Addthis The Energy Department today announced nine research and development projects that will receive funding to support solid-state lighting (SSL) core technology research and product development. The projects will help accelerate the development of high-quality light-emitting diode (LED) and organic light-emitting

  15. Reducing Barriers To The Use of High-Efficiency Lighting Systems

    SciTech Connect (OSTI)

    Peter Morante

    2005-12-31

    With funding from the U.S. Department of Energy (DOE), the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute completed the four-year research project, Reducing Barriers to the Use of High-Efficiency Lighting Systems. The initial objectives were: (1) identifying barriers to widespread penetration of lighting controls in commercial/industrial (C/I) applications that employ fluorescent lamp technologies, and (2) making recommendations to overcome these barriers. The addition of a fourth year expanded the original project objectives to include an examination of the impact on fluorescent lamps from dimming utilizing different lamp electrode heating and dimming ratios. The scope of the project was narrowed to identify barriers to the penetration of lighting controls into commercial-industrial (C/I) applications that employ fluorescent lamp technologies, and to recommend means for overcoming these barriers. Working with lighting manufacturers, specifiers, and installers, the project identified technological and marketing barriers to the widespread use of lighting controls, specifically automatic-off controls, occupancy sensors, photosensors, dimming systems, communication protocols and load-shedding ballasts. The primary barriers identified include cost effectiveness of lighting controls to the building owner, lack of standard communication protocols to allow different part of the control system to communicate effectively, and installation and commissioning issues. Overcoming the identified barriers requires lighting control products on the market to achieve three main goals: (1) Achieve sufficient functionality to meet the key requirements of their main market. (2) Allow significant cost reduction compared to current market standard systems. Cost should consider: hardware capital cost including wiring, design time required by the specifier and the control system manufacturer, installation time required by the electrician, and commissioning time and

  16. Shining Some Light on the World Cup's Efficiency Efforts | Department...

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

    fans now have more to cheer for than their favorite teams. The 2014 World Cup host, Brazil, has been working hard to make its new stadiums energy efficient. In May, Brazil...

  17. California Greenhouse Gas Emissions Standards for Light-Duty Vehicles (released in AEO2005)

    Reports and Publications (EIA)

    2005-01-01

    In July 2002, California Assembly Bill 1493 (A.B. 1493) was signed into law. The law requires that the California Air Resources Board (CARB) develop and adopt, by January 1, 2005, greenhouse gas emission standards for light-duty vehicles that provide the maximum feasible reduction in emissions. In estimating the feasibility of the standard, CARB is required to consider cost-effectiveness, technological capability, economic impacts, and flexibility for manufacturers in meeting the standard.

  18. Standardized Retrofit Packages - What Works to Meet Consistent Levels of Performance: Midwest Energy Efficiency Alliance

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

    Building America Webinar Series Standardized Retrofit Packages - What Works to Meet Consistent Levels of Performance: Midwest Energy Efficiency Alliance Scott Yee March 19 th , 2014 1 Midwest Energy Efficiency Alliance (MEEA) Midwest Energy Efficiency Alliance 2 MEEA is a collaborative network whose purpose is to advance energy efficiency to support sustainable economic development and environmental preservation. Partnership for Advanced Residential Retrofit (PARR) Midwest Energy Efficiency

  19. ISSUANCE 2015-02-04: Energy Conservation Program: Energy Efficiency Standards for Manufactured Housing Request for Information

    Broader source: Energy.gov [DOE]

    Energy Conservation Program: Energy Efficiency Standards for Manufactured Housing Request for Information

  20. Phosphorescent organic light emitting diodes with high efficiency and brightness

    DOE Patents [OSTI]

    Forrest, Stephen R; Zhang, Yifan

    2015-11-12

    An organic light emitting device including a) an anode; b) a cathode; and c) an emissive layer disposed between the anode and the cathode, the emissive layer comprising an organic host compound and a phosphorescent compound exhibiting a Stokes Shift overlap greater than 0.3 eV. The organic light emitting device may further include a hole transport layer disposed between the emissive layer and the anode; and an electron transport layer disposed between the emissive layer and the cathode. In some embodiments, the phosphorescent compound exhibits a phosphorescent lifetime of less than 10 .mu.s. In some embodiments, the concentration of the phosphorescent compound ranges from 0.5 wt. % to 10 wt. %.

  1. III-nitride quantum dots for ultra-efficient solid-state lighting: III-nitride quantum dots for ultra-efficient solid-state lighting

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Wierer, Jonathan J.; Tansu, Nelson; Fischer, Arthur J.; Tsao, Jeffrey Y.

    2016-05-23

    III-nitride light-emitting diodes (LEDs) and laser diodes (LDs) are ultimately limited in performance due to parasitic Auger recombination. For LEDs, the consequences are poor efficiencies at high current densities; for LDs, the consequences are high thresholds and limited efficiencies. Here, we present arguments for III-nitride quantum dots (QDs) as active regions for both LEDs and LDs, to circumvent Auger recombination and achieve efficiencies at higher current densities that are not possible with quantum wells. QD-based LDs achieve gain and thresholds at lower carrier densities before Auger recombination becomes appreciable. QD-based LEDs achieve higher efficiencies at higher currents because of highermore » spontaneous emission rates and reduced Auger recombination. The technical challenge is to control the size distribution and volume of the QDs to realize these benefits. If constructed properly, III-nitride light-emitting devices with QD active regions have the potential to outperform quantum well light-emitting devices, and enable an era of ultra-efficient solidstate lighting.« less

  2. New Energy Efficiency Standards to Help Americans Save Money by Saving Energy, Cut Carbon Pollution

    Office of Energy Efficiency and Renewable Energy (EERE)

    In support of the President’s Climate Action Plan, the Energy Department announced two new energy efficiency standards today. The new standards for general service fluorescent lamps (GSFLs) and automatic commercial ice makers (ACIMs) are the ninth and tenth standards to be finalized in 2014.

  3. Towards high efficiency thin-film crystalline silicon solar cells: The roles of light trapping and non-radiative recombinations

    SciTech Connect (OSTI)

    Bozzola, A. Kowalczewski, P.; Andreani, L. C.

    2014-03-07

    Thin-film solar cells based on silicon have emerged as an alternative to standard thick wafers technology, but they are less efficient, because of incomplete absorption of sunlight, and non-radiative recombinations. In this paper, we focus on the case of crystalline silicon (c-Si) devices, and we present a full analytic electro-optical model for p-n junction solar cells with Lambertian light trapping. This model is validated against numerical solutions of the drift-diffusion equations. We use this model to investigate the interplay between light trapping, and bulk and surface recombination. Special attention is paid to surface recombination processes, which become more important in thinner devices. These effects are further amplified due to the textures required for light trapping, which lead to increased surface area. We show that c-Si solar cells with thickness of a few microns can overcome 20% efficiency and outperform bulk ones when light trapping is implemented. The optimal device thickness in presence of light trapping, bulk and surface recombination, is quantified to be in the range of 1080??m, depending on the bulk quality. These results hold, provided the effective surface recombination is kept below a critical level of the order of 100?cm/s. We discuss the possibility of meeting this requirement, in the context of state-of-the-art techniques for light trapping and surface passivation. We show that our predictions are within the capability of present day silicon technologies.

  4. High Quality Down Lighting Luminaire with 73% Overall System Efficiency

    SciTech Connect (OSTI)

    Robert Harrison; Steven C. Allen; Joseph Bernier; Robert Harrison

    2010-08-31

    This report summarizes work to develop a high flux, high efficiency LED-based downlight at OSRAM SYLVANIA under US Department of Energy contract DE-FC26-08NT01582. A new high power LED and electronic driver were developed for these downlights. The LED achieved 100 lumens per watt efficacy and 1700 lumen flux output at a correlated color temperature of 3500K. The driver had 90% electrical conversion efficiency while maintaining excellent power quality with power factor >0.99, and total harmonic distortion <10%. Two styles of downlights using the LED and driver were shown to exceed the project targets for steady-state luminous efficacy and flux of 70 lumens per watt and 1300 lumens, respectively. Compared to similar existing downlights using compact fluorescent or LED sources, these downlights had much higher efficacy at nearly the same luminous flux.

  5. Cheyenne Light, Fuel and Power (Gas)- Commercial and Industrial Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Cheyenne Light, Fuel and Power (CLFP) offers incentives to commercial and industrial gas customers who install energy efficient equipment in existing buildings. Incentives are available for boilers...

  6. CoServ Electric Cooperative- Commercial Energy Efficient Lighting Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    CoServ Electric Cooperative provides rebates for commercial and industrial customers who upgrade to high efficiency lighting for the workplace. A rebate of $0.20/watt saved is available on interior...

  7. Cheyenne Light, Fuel and Power (Electric)- Commercial and Industrial Efficiency Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Cheyenne Light, Fuel and Power offers incentives to commercial and industrial electric customers who wish to install energy efficient equipment and measures in eligible facilities. Incentives are...

  8. Vehicle Technologies Office Merit Review 2015: Ultra Efficient Light Duty Powertrain with Gasoline Low Temperature Combustion

    Broader source: Energy.gov [DOE]

    Presentation given by Delphi Powertrain at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about ultra efficient light duty...

  9. LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC Engineering Service Center

    SciTech Connect (OSTI)

    2010-08-12

    U.S. Department of Energy (DOE) Federal Energy Management Program (FEMP) emerging technology case study showcasing LED lighting to improve energy efficiency in parking areas at the NAVFAC Engineering Services Center.

  10. High-efficiency solid-state lighting and superconductor research receives

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

    funding High-efficiency solid-state lighting and superconductor High-efficiency solid-state lighting and superconductor research receives funding Each project will be funded for up to three years. August 28, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National

  11. Progress on DOE Vehicle Technologies Light-Duty Diesel Engine Efficiency

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

    and Emissions Milestones | Department of Energy DOE Vehicle Technologies Light-Duty Diesel Engine Efficiency and Emissions Milestones Progress on DOE Vehicle Technologies Light-Duty Diesel Engine Efficiency and Emissions Milestones The path to 45 percent peak BTE in FY 2010 includes modern base engine plus enabling technologies demonstrated in FY 2008 plus the recovery of thermal energy from the exhaust and EGR systems deer09_wagner.pdf (224.99 KB) More Documents & Publications Achieving

  12. EA-2020: Energy Efficiency Standards for New Federal Low-Rise Residential Buildings’ Baseline Standards Update (RIN 1904-AD56)

    Broader source: Energy.gov [DOE]

    This EA will evaluate the potential environmental impacts of implementing the provisions in the Energy Conservation and Production Act (ECPA) that require DOE to update the baseline Federal energy efficiency performance standards for the construction of new Federal buildings, including low-rise residential buildings.

  13. High-Efficiency and Stable White Organic Light-Emitting Diode Using a

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

    Single Emitter | Department of Energy and Stable White Organic Light-Emitting Diode Using a Single Emitter High-Efficiency and Stable White Organic Light-Emitting Diode Using a Single Emitter Lead Performer: Arizona State University - Tempe, AZ DOE Total Funding: $664,785 Cost Share: $170,547 Project Term: 10/1/2011 - 9/30/2015 Funding Opportunity: Solid State Lighting Core Technology Funding Opportunity Announcement (DE-FOA- 0000329) Project Objective This project will demonstrate an

  14. Berkeley Lab Sheds Light on Improving Solar Cell Efficiency

    SciTech Connect (OSTI)

    Lawrence Berkeley National Laboratory

    2007-07-20

    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

  15. Efficient Light Extraction from Organic Light-Emitting Diodes Using Plasmonic Scattering Layers

    SciTech Connect (OSTI)

    Rothberg, Lewis

    2012-11-30

    Our project addressed the DOE MYPP 2020 goal to improve light extraction from organic light-emitting diodes (OLEDs) to 75% (Core task 6.3). As noted in the 2010 MYPP, the greatest opportunity for improvement is in the extraction of light from [OLED] panels. There are many approaches to avoiding waveguiding limitations intrinsic to the planar OLED structure including use of textured substrates, microcavity designs and incorporating scattering layers into the device structure. We have chosen to pursue scattering layers since it addresses the largest source of loss which is waveguiding in the OLED itself. Scattering layers also have the potential to be relatively robust to color, polarization and angular distributions. We note that this can be combined with textured or microlens decorated substrates to achieve additional enhancement.

  16. Over the past decade, lighting became more efficient across all sectors |

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

    Department of Energy Over the past decade, lighting became more efficient across all sectors Over the past decade, lighting became more efficient across all sectors May 10, 2012 - 2:54pm Addthis Source: U.S. Energy Information Administration, based on Department of Energy <a href="http://apps1.eere.energy.gov/buildings/publications/pdfs/ssl/2010-lmc-final-jan-2012.pdf">2010 U.S. Lighting Market Characterization</a> Source: U.S. Energy Information Administration, based

  17. High-Efficiency Clean Combustion in Light-Duty Multi-Cylinder Diesel

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

    Engines | Department of Energy High-Efficiency Clean Combustion in Light-Duty Multi-Cylinder Diesel Engines High-Efficiency Clean Combustion in Light-Duty Multi-Cylinder Diesel Engines 2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. ace016_wagner_2010_o.pdf (1.43 MB) More Documents & Publications Combustion and Emissions Performance of Dual-Fuel Gasoline and Diesel HECC on a Multi-Cylinder Light Duty

  18. Stronger Manufacturers' Energy Efficiency Standards for Residential Air Conditioners Go Into Effect Today

    Broader source: Energy.gov [DOE]

    WASHINGTON, DC -- To increase the energy efficiency of residential air conditioners, the U.S. Department of Energy (DOE) has issued new manufacturing standards that go into effect  today, January...

  19. New Energy Efficiency Standards for Microwave Ovens to Save Consumers on Energy Bills

    Broader source: Energy.gov [DOE]

    U.S. Energy Secretary Ernest Moniz announced today that the Energy Department has finalized new energy efficiency standards for microwave ovens that will save consumers nearly $3 billion on their energy bills through 2030.

  20. High-efficiency white organic light-emitting diodes using thermally activated delayed fluorescence

    SciTech Connect (OSTI)

    Nishide, Jun-ichi; Hiraga, Yasuhide; Nakanotani, Hajime; Adachi, Chihaya

    2014-06-09

    White organic light-emitting diodes (WOLEDs) have attracted much attention recently, aimed for next-generation lighting sources because of their high potential to realize high electroluminescence efficiency, flexibility, and low-cost manufacture. Here, we demonstrate high-efficiency WOLED using red, green, and blue thermally activated delayed fluorescence materials as emissive dopants to generate white electroluminescence. The WOLED has a maximum external quantum efficiency of over 17% with Commission Internationale de l'Eclairage coordinates of (0.30, 0.38).

  1. DOE Science Showcase - Read about Energy-Efficient Lighting | OSTI, US

    Office of Scientific and Technical Information (OSTI)

    Dept of Energy Office of Scientific and Technical Information Read about Energy-Efficient Lighting From the DOE Press Release: "These investments in cutting-edge lighting technologies will support American innovation, create new manufacturing jobs for U.S. workers, and help ensure that the United States leads the world in this rapidly evolving industry," said Secretary Chu. "These next-generation lighting technologies have the potential to transform the way we light our homes

  2. Semiconductor light-emitting devices having concave microstructures providing improved light extraction efficiency and method for producing same

    DOE Patents [OSTI]

    Tansu, Nelson; Gilchrist, James F; Ee, Yik-Khoon; Kumnorkaew, Pisist

    2013-11-19

    A conventional semiconductor LED is modified to include a microlens layer over its light-emitting surface. The LED may have an active layer including at least one quantum well layer of InGaN and GaN. The microlens layer includes a plurality of concave microstructures that cause light rays emanating from the LED to diffuse outwardly, leading to an increase in the light extraction efficiency of the LED. The concave microstructures may be arranged in a substantially uniform array, such as a close-packed hexagonal array. The microlens layer is preferably constructed of curable material, such as polydimethylsiloxane (PDMS), and is formed by soft-lithography imprinting by contacting fluid material of the microlens layer with a template bearing a monolayer of homogeneous microsphere crystals, to cause concave impressions, and then curing the material to fix the concave microstructures in the microlens layer and provide relatively uniform surface roughness.

  3. Energy Efficiency Program for Residential Products: Energy Conservation Standards for Residential Dishwashers, Reopening of the Comment Period

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Efficiency Program for Residential Products: Energy Conservation Standards for Residential Dishwashers, Reopening of the Comment Period

  4. Optical Design Considerations for Efficient Light Collection from Liquid Scintillation Counters

    SciTech Connect (OSTI)

    Bernacki, Bruce E.; Douglas, Matthew; Erchinger, Jennifer L.; Fuller, Erin S.; Keillor, Martin E.; Morley, Shannon M.; Mullen, Crystal A.; Orrell, John L.; Panisko, Mark E.; Warren, Glen A.; Wright, Michael E.

    2015-01-01

    Liquid scintillation counters measure charged particle-emitting radioactive isotopes and are used for environmental studies, nuclear chemistry, and life science. Alpha and beta emissions arising from the material under study interact with the scintillation cocktail to produce light. The prototypical liquid scintillation counter employs low-level photon-counting detectors to measure the arrival of the scintillation light produced as a result of the dissolved material under study interacting with the scintillation cocktail. For reliable operation the counting instrument must convey the scintillation light to the detectors efficiently and predictably. Current best practices employ the use of two or more detectors for coincidence processing to discriminate true scintillation events from background events due to instrumental effects such as photomultiplier tube dark rates, tube flashing, or other light emission not generated in the scintillation cocktail vial. In low background liquid scintillation counters additional attention is paid to shielding the scintillation cocktail from naturally occurring radioactive material (NORM) present in the laboratory and within the instruments construction materials. Low background design is generally at odds with optimal light collection. This study presents the evolution of a light collection design for liquid scintillation counting in a low background shield. The basic approach to achieve both good light collection and a low background measurement is described. The baseline signals arising from the scintillation vial are modeled and methods to efficiently collect scintillation light are presented as part of the development of a customized low-background, high sensitivity liquid scintillation counting system.

  5. Light Trapping for High Efficiency Heterojunction Crystalline Si Solar Cells: Preprint

    SciTech Connect (OSTI)

    Wang, Q.; Xu, Y.; Iwaniczko, E.; Page, M.

    2011-04-01

    Light trapping plays an important role to achieve high short circuit current density (Jsc) and high efficiency for amorphous/crystalline Si heterojunction solar cells. Si heterojunction uses hydrogenated amorphous Si for emitter and back contact. This structure of solar cell posses highest open circuit voltage of 0.747 V at one sun for c-Si based solar cells. It also suggests that over 25% record-high efficiency is possible with further improvement of Jsc. Light trapping has two important tasks. The first one is to reduce the surface reflectance of light to zero for the solar spectrum that Si has a response. The second one is to increase the effective absorption length to capture all the photon. For Si heterojunction solar cell, surface texturing, anti-reflectance indium tin oxides (ITO) layer at the front and back are the key area to improve the light trapping.

  6. An Efficient LED System-in-Module for General Lighting Applications

    SciTech Connect (OSTI)

    2008-09-14

    The objective of the project was to realize an LED-based lighting technology platform for general illumination, starting with LED chips, and integrating the necessary technologies to make compact, user-friendly, high-efficiency, energy-saving sources of controlled white (or variable-colored) light. The project is to build the system around the LEDs, and not to work on the LEDs themselves, in order that working products can be introduced soon after the LEDs reach suitable efficiency for mass-production of high-power light sources for general illumination. Because the light sources are intended for general illumination, color must be accurately maintained, requiring feedback control in the electronics. The project objective has been realized and screw base demonstrators, based on the technology developed in the project, have been built.

  7. Analysis of lasers as a solution to efficiency droop in solid-state lighting

    SciTech Connect (OSTI)

    Chow, Weng W.; Crawford, Mary H.

    2015-10-06

    This letter analyzes the proposal to mitigate the efficiency droop in solid-state light emitters by replacing InGaN light-emitting diodes (LEDs) with lasers. The argument in favor of this approach is that carrier-population clamping after the onset of lasing limits carrier loss to that at threshold, while stimulated emission continues to grow with injection current. A fully quantized (carriers and light) theory that is applicable to LEDs and lasers (above and below threshold) is used to obtain a quantitative evaluation. The results confirm the potential advantage of higher laser output power and efficiency above lasing threshold, while also indicating disadvantages including low efficiency prior to lasing onset, sensitivity of lasing threshold to temperature, and the effects of catastrophic laser failure. As a result, a solution to some of these concerns is suggested that takes advantage of recent developments in nanolasers.

  8. Analysis of lasers as a solution to efficiency droop in solid-state lighting

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Chow, Weng W.; Crawford, Mary H.

    2015-10-06

    This letter analyzes the proposal to mitigate the efficiency droop in solid-state light emitters by replacing InGaN light-emitting diodes (LEDs) with lasers. The argument in favor of this approach is that carrier-population clamping after the onset of lasing limits carrier loss to that at threshold, while stimulated emission continues to grow with injection current. A fully quantized (carriers and light) theory that is applicable to LEDs and lasers (above and below threshold) is used to obtain a quantitative evaluation. The results confirm the potential advantage of higher laser output power and efficiency above lasing threshold, while also indicating disadvantages includingmore » low efficiency prior to lasing onset, sensitivity of lasing threshold to temperature, and the effects of catastrophic laser failure. As a result, a solution to some of these concerns is suggested that takes advantage of recent developments in nanolasers.« less

  9. Buildings Energy Data Book: 7.4 Efficiency Standards for Commercial HVAC

    Buildings Energy Data Book [EERE]

    2 Efficiency Standards for Commercial Packaged Boilers Effective for products manufactured between January 1, 1994 and March 1, 2012 Combustion Efficiency (1) Gas-fired, with capacity ≥ 300,000 Btu/hr Not less than 80% Oil-fired, with capacity ≥ 300,000 Btu/hr Not less than 83% Effective for products manufactured on or after March 2, 2012 Size (Btu/hr) Efficiency Level (1) Gas-fired, hot water ≥300,000 and ≤2,500,000 80% thermal efficiency Gas-fired, hot water >2,500,000 82%

  10. III-nitride quantum dots for ultra-efficient solid-state lighting

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Wierer, Jr., Jonathan J.; Tansu, Nelson; Fischer, Arthur J.; Tsao, Jeffrey Y.

    2016-05-01

    III-nitride light-emitting diodes (LEDs) and laser diodes (LDs) are ultimately limited in performance due to parasitic Auger recombination. For LEDs, the consequences are poor efficiencies at high current densities; for LDs, the consequences are high thresholds and limited efficiencies. Here, we present arguments for III-nitride quantum dots (QDs) as active regions for both LEDs and LDs, to circumvent Auger recombination and achieve efficiencies at higher current densities that are not possible with quantum wells. QD-based LDs achieve gain and thresholds at lower carrier densities before Auger recombination becomes appreciable. QD-based LEDs achieve higher efficiencies at higher currents because of highermore » spontaneous emission rates and reduced Auger recombination. The technical challenge is to control the size distribution and volume of the QDs to realize these benefits. In conclusion, if constructed properly, III-nitride light-emitting devices with QD active regions have the potential to outperform quantum well light-emitting devices, and enable an era of ultra-efficient solidstate lighting.« less

  11. Realized and Projected Impacts of U.S. Energy Efficiency Standards for Residential and Commercial Appliances

    SciTech Connect (OSTI)

    Meyers, Stephen P.; McMahon, James; Atkinson, Barbara

    2008-05-08

    This study estimated energy, environmental and consumer economic impacts of U.S. Federal residential energy efficiency standards that became effective in the 1988-2006 period, and of energy efficiency standards for fluorescent lamp ballasts and distribution transformers. These standards have been the subject of in-depth analyses conducted as part of DOE's standards rulemaking process. This study drew on those analyses, but updated certain data and developed a common framework and assumptions for all of the products in order to estimate realized impacts and to update projected impacts. It also performed new analysis for the first (1990) fluorescent ballast standards, which had been introduced in the NAECA legislation without a rulemaking. We estimate that the considered standards will reduce residential/ commercial primary energy consumption and carbon dioxide emissions in 2030 by 4percent compared to the levels expected without any standards. The reduction for the residential sector is larger, at 8percent. The estimated cumulative energy savings from the standards amount to 39 quads by 2020, and 63 quads by 2030. The standards will also reduce emissions of carbon dioxide by considerable amounts.The estimated cumulative net present value of consumer benefit amounts to $241 billion by 2030, and grows to $269 billion by 2045. The overall ratio of consumer benefits to costs (in present value terms) in the 1987-2050 period is 2.7 to 1. Although the estimates made in this study are subject to a fair degree of uncertainty, we believe they provide a reasonable approximation of the national benefits resulting from Federal appliance efficiency standards.

  12. EA-1872: Energy Efficiency and Sustainable Design Standards for New Federal Buildings

    Office of Energy Efficiency and Renewable Energy (EERE)

    This EA evaluated the environmental impacts of a proposal to amend the current rule for commercial and high-rise multi-family residential buildings, 10 CFR 433 “Energy Efficiency Standards for New Federal Commercial and High-Rise Multi-Family Residential Buildings,” to replace ASHRAE Standard 90.1-2004 with the more stringent ASHRAE Standard 90.1-2007, incorporated by reference. This EA also evaluated the environmental impacts with regard to low-rise residential buildings; this rulemaking updated 10 CFR 435 Subpart A, “Energy Efficiency Standards for New Federal Residential Low-Rise Residential Buildings,” to replace the International Energy Conservation Code (IECC) 2004 with the more stringent IECC 2009, incorporated by reference. This EA was completed as DOE/EA-1871.

  13. New Energy Efficiency Standards for Metal Halide Lamp Fixtures to Save on

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

    Energy Bills and Reduce Carbon Pollution | Department of Energy Metal Halide Lamp Fixtures to Save on Energy Bills and Reduce Carbon Pollution New Energy Efficiency Standards for Metal Halide Lamp Fixtures to Save on Energy Bills and Reduce Carbon Pollution January 30, 2014 - 9:30am Addthis News Media Contact (202) 586-4940 WASHINGTON - As part of the Energy Department's efforts to develop efficiency standards that cut carbon pollution and save money by saving energy, U.S. Energy Secretary

  14. EERE Success Story-Energy Efficiency Standards for Microwave Ovens Saves

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

    Consumers Energy and Updates the Social Cost of Carbon | Department of Energy Efficiency Standards for Microwave Ovens Saves Consumers Energy and Updates the Social Cost of Carbon EERE Success Story-Energy Efficiency Standards for Microwave Ovens Saves Consumers Energy and Updates the Social Cost of Carbon August 21, 2013 - 9:18am Addthis A typical microwave is used to heat food for about 70 hours each year, but continues to use electricity for the remaining 8,690 hours of the year to power

  15. Japan's Residential Energy Demand Outlook to 2030 Considering Energy Efficiency Standards"Top-Runner Approach"

    SciTech Connect (OSTI)

    Lacommare, Kristina S H; Komiyama, Ryoichi; Marnay, Chris

    2008-05-15

    As one of the measures to achieve the reduction in greenhouse gas emissions agreed to in the"Kyoto Protocol," an institutional scheme for determining energy efficiency standards for energy-consuming appliances, called the"Top-Runner Approach," was developed by the Japanese government. Its goal is to strengthen the legal underpinnings of various energy conservation measures. Particularly in Japan's residential sector, where energy demand has grown vigorously so far, this efficiency standard is expected to play a key role in mitigating both energy demand growth and the associated CO2 emissions. This paper presents an outlook of Japan's residential energy demand, developed by a stochastic econometric model for the purpose of analyzing the impacts of the Japan's energy efficiency standards, as well as the future stochastic behavior of income growth, demography, energy prices, and climate on the future energy demand growth to 2030. In this analysis, we attempt to explicitly take into consideration more than 30 kinds of electricity uses, heating, cooling and hot water appliances in order to comprehensively capture the progress of energy efficiency in residential energy end-use equipment. Since electricity demand, is projected to exhibit astonishing growth in Japan's residential sector due to universal increasing ownership of electric and other appliances, it is important to implement an elaborate efficiency standards policy for these appliances.

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

    SciTech Connect (OSTI)

    Letschert, Virginie; Desroches, Louis-Benoit; Ke, Jing; McNeil, Michael

    2012-07-01

    As part of the ongoing effort to estimate the foreseeable impacts of aggressive minimum efficiency performance standards (MEPS) programs in the worlds major economies, Lawrence Berkeley National Laboratory (LBNL) has developed a scenario to analyze the technical potential of MEPS in 13 major economies around the world1 . The best available technology (BAT) scenario seeks to determine the maximum potential savings that would result from diffusion of the most efficient available technologies in these major economies.

  17. Do Energy Efficiency Standards Improve Quality? Evidence from a Revealed Preference Approach

    SciTech Connect (OSTI)

    Houde, Sebastien; Spurlock, C. Anna

    2015-06-01

    Minimum energy efficiency standards have occupied a central role in U.S. energy policy for more than three decades, but little is known about their welfare effects. In this paper, we employ a revealed preference approach to quantify the impact of past revisions in energy efficiency standards on product quality. The micro-foundation of our approach is a discrete choice model that allows us to compute a price-adjusted index of vertical quality. Focusing on the appliance market, we show that several standard revisions during the period 2001-2011 have led to an increase in quality. We also show that these standards have had a modest effect on prices, and in some cases they even led to decreases in prices. For revision events where overall quality increases and prices decrease, the consumer welfare effect of tightening the standards is unambiguously positive. Finally, we show that after controlling for the effect of improvement in energy efficiency, standards have induced an expansion of quality in the non-energy dimension. We discuss how imperfect competition can rationalize these results.

  18. Fuel Economy Standards for New Light Trucks (released in AEO2007)

    Reports and Publications (EIA)

    2007-01-01

    In March 2006, the National Highway Traffic Safety Administration (NHTSA) finalized Corporate Average Fuel Economy (CAFE) standards requiring higher fuel economy performance for light-duty trucks in model year (MY) 2008 through 2011. Unlike the proposed CAFE standards discussed in Annual Energy Outlook 2006, which would have established minimum fuel economy requirements by six footprint size classes, the final reformed CAFE standards specify a continuous mathematical function that determines minimum fuel economy requirements by vehicle footprint, defined as the wheelbase (the distance from the front axle to the center of the rear axle) times the average track width (the distance between the center lines of the tires) of the vehicle in square feet.

  19. Advanced method for increasing the efficiency of white light quantum dot LEDs

    SciTech Connect (OSTI)

    Duty, Chad E [ORNL; Bennett, Charlee J C [ORNL; Sabau, Adrian S [ORNL; Jellison Jr, Gerald Earle [ORNL; Boudreaux, Philip R [ORNL; Walker, Steven C [ORNL; Ott, Ronald D [ORNL

    2011-01-01

    Covering a light-emitting diode (LED) with quantum dots (QDs) can produce a broad spectrum of white light. However, current techniques for applying QDs to LEDs suffer from a high density of defects and a non-uniform distribution of QDs, which, respectively, diminish the efficiency and quality of emitted light. Oak Ridge National Laboratory (ORNL) has the unique capability to thermally anneal QD structures at extremely high power densities for very short durations. This process, called pulse thermal processing (PTP), reduces the number of point defects while maintaining the size and shape of the original QD nanostructure. Therefore, the efficiency of the QD wavelength conversion layer is improved without altering the emission spectrum defined by the size distribution of theQD nanoparticles. The current research uses a thermal model to predict annealing temperatures during PTP and demonstrates up to a 300% increase in photoluminescence for QDs on passive substrates.

  20. New analysis techniques for estimating impacts of federal appliance efficiency standards

    SciTech Connect (OSTI)

    McMahon, James E.

    2003-06-24

    Impacts of U.S. appliance and equipment standards have been described previously. Since 2000, the U.S. Department of Energy (DOE) has updated standards for clothes washers, water heaters, and residential central air conditioners and heat pumps. A revised estimate of the aggregate impacts of all the residential appliance standards in the United States shows that existing standards will reduce residential primary energy consumption and associated carbon dioxide (CO{sub 2}) emissions by 89 percent in 2020 compared to the levels expected without any standards. Studies of possible new standards are underway for residential furnaces and boilers, as well as a number of products in the commercial (tertiary) sector, such as distribution transformers and unitary air conditioners. The analysis of standards has evolved in response to critiques and in an attempt to develop more precise estimates of costs and benefits of these regulations. The newer analysis elements include: (1) valuing energy savings by using marginal (rather than average) energy prices specific to an end-use; (2) simulating the impacts of energy efficiency increases over a sample population of consumers to quantify the proportion of households having net benefits or net costs over the life of the appliance; and (3) calculating marginal markups in distribution channels to derive the incremental change in retail prices associated with increased manufacturing costs for improving energy efficiency.

  1. Buildings Energy Data Book: 7.4 Efficiency Standards for Commercial HVAC

    Buildings Energy Data Book [EERE]

    1 Efficiency Standards for Commercial Warm Air Furnaces Effective for products manufactured on or after January 1, 1994 Thermal Efficiency (1) Gas-fired, with capacity ≥ 225,000 Btu/hr Not less than 80% Oil-fired, with capacity ≥ 225,000 Btu/hr Not less than 81% Note(s): Source(s): 1) Measured at the maximum rated capacity. Title 10, Code of Federal Regulations, Part 431 - Energy Efficiency Program for Certain Commercial and Industrial Equipment, Subpart D - Commercial Warm Air Furna

  2. Thinking Globally: How ISO 50001 - Energy Management can make industrial energy efficiency standard practice

    SciTech Connect (OSTI)

    McKane, Aimee; Desai, Deann; Matteini, Marco; Meffert, William; Williams, Robert; Risser, Roland

    2009-08-01

    Industry utilizes very complex systems, consisting of equipment and their human interface, which are organized to meet the production needs of the business. Effective and sustainable energy efficiency programs in an industrial setting require a systems approach to optimize the integrated whole while meeting primary business requirements. Companies that treat energy as a manageable resource and integrate their energy program into their management practices have an organizational context to continually seek opportunities for optimizing their energy use. The purpose of an energy management system standard is to provide guidance for industrial and commercial facilities to integrate energy efficiency into their management practices, including fine-tuning production processes and improving the energy efficiency of industrial systems. The International Organization for Standardization (ISO) has identified energy management as one of its top five priorities for standards development. The new ISO 50001 will establish an international framework for industrial, commercial, or institutional facilities, or entire companies, to manage their energy, including procurement and use. This standard is expected to achieve major, long-term increases in energy efficiency (20percent or more) in industrial, commercial, and institutional facilities and to reduce greenhouse gas (GHG) emissions worldwide.This paper describes the impetus for the international standard, its purpose, scope and significance, and development progress to date. A comparative overview of existing energy management standards is provided, as well as a discussion of capacity-building needs for skilled individuals to assist organizations in adopting the standard. Finally, opportunities and challenges are presented for implementing ISO 50001 in emerging economies and developing countries.

  3. Transportation Energy Futures Series. Potential for Energy Efficiency Improvement Beyond the Light-Duty-Vehicle Sector

    SciTech Connect (OSTI)

    Vyas, A. D.; Patel, D. M.; Bertram, K. M.

    2013-02-01

    Considerable research has focused on energy efficiency and fuel substitution options for light-duty vehicles, while much less attention has been given to medium- and heavy-duty trucks, buses, aircraft, marine vessels, trains, pipeline, and off-road equipment. This report brings together the salient findings from an extensive review of literature on future energy efficiency options for these non-light-duty modes. Projected activity increases to 2050 are combined with forecasts of overall fuel efficiency improvement potential to estimate the future total petroleum and greenhouse gas (GHG) emissions relative to current levels. This is one of a series of reports produced as a result of the Transportation Energy Futures (TEF) project, a Department of Energy-sponsored multi-agency project initiated to pinpoint underexplored strategies for abating GHGs and reducing petroleum dependence related to transportation.

  4. Transportation Energy Futures Series: Potential for Energy Efficiency Improvement Beyond the Light-Duty-Vehicle Sector

    SciTech Connect (OSTI)

    Vyas, A. D.; Patel, D. M.; Bertram, K. M.

    2013-03-01

    Considerable research has focused on energy efficiency and fuel substitution options for light-duty vehicles, while much less attention has been given to medium- and heavy-duty trucks, buses, aircraft, marine vessels, trains, pipeline, and off-road equipment. This report brings together the salient findings from an extensive review of literature on future energy efficiency options for these non-light-duty modes. Projected activity increases to 2050 are combined with forecasts of overall fuel efficiency improvement potential to estimate the future total petroleum and greenhouse gas (GHG) emissions relative to current levels. This is one of a series of reports produced as a result of the Transportation Energy Futures (TEF) project, a Department of Energy-sponsored multi-agency project initiated to pinpoint underexplored strategies for abating GHGs and reducing petroleum dependence related to transportation.

  5. Novel Low Cost Organic Vapor Jet Printing of Striped High Efficiency Phosphorescent OLEDs for White Lighting

    SciTech Connect (OSTI)

    Mike Hack

    2008-12-31

    In this program, Universal Display Corporation and University of Michigan proposed to integrate three innovative concepts to meet the DOE's Solid State Lighting (SSL) goals: (1) high-efficiency phosphorescent organic light emitting device (PHOLED{trademark}) technology, (2) a white lighting design that is based on a series of red, green and blue OLED stripes, and (3) the use of a novel cost-effective, high rate, mask-less deposition process called organic vapor jet printing (OVJP). Our PHOLED technology offers up to four-times higher power efficiency than other OLED approaches for general lighting. We believe that one of the most promising approaches to maximizing the efficiency of OLED lighting sources is to produce stripes of the three primary colors at such a pitch (200-500 {mu}m) that they appear as a uniform white light to an observer greater than 1 meter (m) away from the illumination source. Earlier work from a SBIR Phase 1 entitled 'White Illumination Sources Using Striped Phosphorescent OLEDs' suggests that stripe widths of less than 500 {mu}m appear uniform from a distance of 1m without the need for an external diffuser. In this program, we intend to combine continued advances in this PHOLED technology with the striped RGB lighting design to demonstrate a high-efficiency, white lighting source. Using this background technology, the team has focused on developing and demonstrating the novel cost-effective OVJP process to fabricate these high-efficiency white PHOLED light sources. Because this groundbreaking OVJP process is a direct printing approach that enables the OLED stripes to be printed without a shadow mask, OVJP offers very high material utilization and high throughput without the costs and wastage associated with a shadow mask (i.e. the waste of material that deposits on the shadow mask itself). As a direct printing technique, OVJP also has the potential to offer ultra-high deposition rates (> 1,000 Angstroms/second) for any size or shaped

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

    SciTech Connect (OSTI)

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

    2010-05-03

    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

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

    SciTech Connect (OSTI)

    Eto, J.; Vine, E.; Shown, L.; Sonnenblick, R.; Payne, C.

    1994-05-01

    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.

  8. Development of Efficient UV-LED Phosphor Coatings for Energy Saving Solid State Lighting

    SciTech Connect (OSTI)

    Uwe Happek

    2006-05-15

    The University of Georgia, in collaboration with GE Global Research, has investigated the relevant quenching mechanism of phosphor coatings used in white light devices based on UV LEDs. The final goal of the project was the design and fabrication of a high-efficacy white light UV-LED device through improved geometry and optimized phosphor coatings. At the end of the research period, which was extended to seamlessly carry over the research to a follow-up program, we have demonstrated a two-fold improvement in the conversion efficiency of a white light LED device, where the increase efficacy is due to both improved phosphor quantum efficiency and lamp geometry. Working prototypes have been displayed at DOE sponsored meetings and during the final presentation at the DOE Headquarters in Washington, DC. During the first phase of the project, a fundamental understanding of quenching processes in UV-LEDs was obtained, and the relationships that describe the performance of the phosphor as a function of photon flux, temperature, and phosphor composition were established. In the second phase of the project, these findings were then implemented to design the improved UV-LED lamp. In addition, our research provides a road map for the design of efficient white light LEDs, which will be an important asset during a follow-up project led by GE.

  9. Comparison of Test Procedures and Energy Efficiency Criteria in Selected International Standards and Labeling Programs for Clothes Washers, Water Dispensers, Vending Machines and CFLs

    SciTech Connect (OSTI)

    Fridley, David; Zheng, Nina; Zhou, Nan

    2010-06-01

    Since the late 1970s, energy labeling programs and mandatory energy performance standards have been used in many different countries to improve the efficiency levels of major residential and commercial equipment. As more countries and regions launch programs covering a greater range of products that are traded worldwide, greater attention has been given to harmonizing the specific efficiency criteria in these programs and the test methods for measurements. For example, an international compact fluorescent light (CFL) harmonization initiative was launched in 2006 to focus on collaboration between Australia, China, Europe and North America. Given the long history of standards and labeling programs, most major energy-consuming residential appliances and commercial equipment are already covered under minimum energy performance standards (MEPS) and/or energy labels. For these products, such as clothes washers and CFLs, harmonization may still be possible when national MEPS or labeling thresholds are revised. Greater opportunity for harmonization exists in newer energy-consuming products that are not commonly regulated but are under consideration for new standards and labeling programs. This may include commercial products such as water dispensers and vending machines, which are only covered by MEPS or energy labels in a few countries or regions. As China continues to expand its appliance standards and labeling programs and revise existing standards and labels, it is important to learn from recent international experiences with efficiency criteria and test procedures for the same products. Specifically, various types of standards and labeling programs already exist in North America, Europe and throughout Asia for products in China's 2010 standards and labeling programs, namely clothes washers, water dispensers, vending machines and CFLs. This report thus examines similarities and critical differences in energy efficiency values, test procedure specifications and other

  10. High efficiency and brightness fluorescent organic light emitting diode by triplet-triplet fusion

    DOE Patents [OSTI]

    Forrest, Stephen; Zhang, Yifan

    2015-02-10

    A first device is provided. The first device further comprises an organic light emitting device. The organic light emitting device further comprises an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer may include an organic host compound and at least one organic emitting compound capable of fluorescent emission at room temperature. Various configurations are described for providing a range of current densities in which T-T fusion dominates over S-T annihilation, leading to very high efficiency fluorescent OLEDs.

  11. Department of Energy Office of Energy Efficiency and Renewable Energy Solid Lighting Core Technologies

    SciTech Connect (OSTI)

    Jiangeng Xue; Elliot Douglas

    2011-03-31

    The overall objective of this project is to demonstrate an ultra-effective light extraction mechanism that can be universally applied to all top-emitting white OLEDs (TE-WOLEDs) and can be integrated with thin film encapsulation techniques. The scope of work proposed in this project includes four major areas: (1) optical modeling; (2) microlens and array fabrication; (3) fabrication, encapsulation, and characterization of TE-WOLEDs; and (4) full device integration and characterization. First, the light extraction efficiency in a top-emitting OLED with or without a microlens array are modeled using wave optics. Second, individual microlenses and microlens arrays are fabricated by inkjet printing of microdroplets of a liquid thiol-ene monomer with high refractive index followed by photopolymerization. Third, high efficiency top-emitting white OLEDs are fabricated, and fully characterized. Finally, optimized microlens arrays are fabricated on TE-WOLEDs with dielectric barrier layers. The overall light extraction efficiency of these devices, as well as its wavelength and angular dependencies, are measured by comparing the efficiencies of devices with and without microlens arrays. In conclusion, we have demonstrated the feasibility of applying inkjet printed microlens arrays to enhance the light extraction efficiency of top-emitting white OLEDs. We have shown that the geometry (contact angle) of the printed microlenses can be controlled by controlling the surface chemistry prior to printing the lenses. A 90% enhancement in the light extraction efficiency has been achieved with printed microlens array on a top-emitting white OLED, which can be further improved to 140% using a more close-packed microlens array fabricated from a molding process. Future work will focus on improvement of the microlens fabrication process to improve the array fill factor and the contact angle, as well as use transparent materials with a higher index of refraction. We will also further

  12. Buildings Energy Data Book: 7.5 Efficiency Standards for Residential Appliances

    Buildings Energy Data Book [EERE]

    2 Efficiency Standards for Residential Refrigerators and Freezers (1) 1) 2) 3) 4) 5) 6) Note(s): Source(s): Refrigerator-freezers, automatic defrost with side-mounted freezer with through-the-door ice service 10.10AV + 406.0 1) Effective for products manufactured on or after July 1, 2001. Standards do not apply to refrigerators and refrigerator-freezers with total refrigerated volume exceeding 39 cubic feet or freezers with total refrigerated volume exceeding 30 cubic feet. AV = total adjusted

  13. Efficient nanorod-based amorphous silicon solar cells with advanced light trapping

    SciTech Connect (OSTI)

    Kuang, Y.; Lare, M. C. van; Polman, A.; Veldhuizen, L. W.; Schropp, R. E. I.; Rath, J. K.

    2015-11-14

    We present a simple, low-cost, and scalable approach for the fabrication of efficient nanorod-based solar cells. Templates with arrays of self-assembled ZnO nanorods with tunable morphology are synthesized by chemical bath deposition using a low process temperature at 80 °C. The nanorod templates are conformally coated with hydrogenated amorphous silicon light absorber layers of 100 nm and 200 nm thickness. An initial efficiency of up to 9.0% is achieved for the optimized design. External quantum efficiency measurements on the nanorod cells show a substantial photocurrent enhancement both in the red and the blue parts of the solar spectrum. Key insights in the light trapping mechanisms in these arrays are obtained via a combination of three-dimensional finite-difference time-domain simulations, optical absorption, and external quantum efficiency measurements. Front surface patterns enhance the light incoupling in the blue, while rear side patterns lead to enhanced light trapping in the red. The red response in the nanorod cells is limited by absorption in the patterned Ag back contact. With these findings, we develop and experimentally realize a further advanced design with patterned front and back sides while keeping the Ag reflector flat, showing significantly enhanced scattering from the back reflector with reduced parasitic absorption in the Ag and thus higher photocurrent generation. Many of the findings in this work can serve to provide insights for further optimization of nanostructures for thin-film solar cells in a broad range of materials.

  14. Buildings Energy Data Book: 7.4 Efficiency Standards for Commercial HVAC

    Buildings Energy Data Book [EERE]

    3 Efficiency Standards for Commercial Air Conditioners and Heat Pumps (1) Type Cooling Capacity (Btu/hr) Category (2) Efficiency Level Small commercial package air conditioning <65,000 AC SEER = 13.0 and heating equipment (air-cooled, HP SEER = 13.0 three-phase) Single package vertical air conditioners and <65,000 AC EER = 9.0 single package vertical heat pumps, HP EER = 9.0, COP = 3.0 single-phase and three phase Single package vertical air conditioners and ≥65,000 and <135,000 AC

  15. Confronting Regulatory Cost and Quality Expectations. An Exploration of Technical Change in Minimum Efficiency Performance Standards

    SciTech Connect (OSTI)

    Taylor, Margaret; Spurlock, C. Anna; Yang, Hung-Chia

    2015-09-21

    The dual purpose of this project was to contribute to basic knowledge about the interaction between regulation and innovation and to inform the cost and benefit expectations related to technical change which are embedded in the rulemaking process of an important area of national regulation. The area of regulation focused on here is minimum efficiency performance standards (MEPS) for appliances and other energy-using products. Relevant both to U.S. climate policy and energy policy for buildings, MEPS remove certain product models from the market that do not meet specified efficiency thresholds.

  16. Comparison of the Energy Efficiency Prescribed by ASHRAE/ANSI/IESNA Standard 90.1-1999 and ASHRAE/ANSI/IESNA Standard 90.1-2004

    SciTech Connect (OSTI)

    Halverson, Mark A.; Liu, Bing; Richman, Eric E.; Winiarski, David W.

    2006-12-01

    This document presents the qualitative comparison of DOE’s formal determination of energy savings of ANSI/ASHRAE/IESNA Standard 90.1-2004. The term “qualitative” is used in the sense of identifying whether or not changes have a positive, negative, or neutral impact on energy efficiency of the standard, with no attempt made to quantify that impact. A companion document will present the quantitative comparison of DOE’s determination. The quantitative comparison will be based on whole building simulation of selected building prototypes in selected climates. This document presents a comparison of the energy efficiency requirements in ANSI/ASHRAE/IESNA 90.1-1999 (herein referred to as Standard 90.1-1999) and ANSI/ASHRAE/IESNA 90.1-2004 (herein referred to as Standard 90.1-2004). The comparison was done through a thorough review of all addenda to Standard 90.1-1999 that were included in the published ANSI/ASHRAE/IESNA Standard 90.1-2001 (herein referred to as Standard 90.1-2001) and also all addenda to Standard 90.1-2001 that were included in the published Standard 90.1-2004. A summary table showing the impact of each addendum is provided. Each addendum to both Standards 90.1-1999 and 90.1-2001 was evaluated as to its impact on the energy efficiency requirements of the standard (greater efficiency, lesser efficiency) and as to significance. The final section of this document summarizes the impacts of the various addenda and proposes which addenda should be included in the companion quantitative portion of DOE’s determination. Addenda are referred to with the nomenclature addendum 90.1-xxz, where “xx” is either “99” for 1999 or “01” for 2001, and z is the ASHRAE letter designation for the addendum. Addenda names are shown in bold face in text. DOE has chosen not to prepare a separate evaluation of Standard 90.1-2001 as that standard does not appear to improve energy efficiency in commercial buildings. What this means for the determination of energy

  17. U.S. Department of Energy and Illuminating Engineering Society of North America Partner to Advance Industry Lighting Standards

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) and the Illuminating Engineering Society of North America (IES) signed a Memorandum of Understanding (MOU) to work together on the development of strong industry lighting standards. The original MOU was signed in July 2006 and a renewed MOU was signed in October 2011. It underscores the Department's commitment to support the development of needed metrics and standards for solid-state lighting (SSL) technology.

  18. Buildings Energy Data Book: 7.3 Efficiency Standards for Residential HVAC

    Buildings Energy Data Book [EERE]

    3 Efficiency Standards for Residential Boilers Effective for products manufactured before September 1, 2012 AFUE(%) (1) Boilers (excluding gas steam) Gas Steam Boilers Effective for products manufactured on or after September 1, 2012 (2) AFUE (%) (1) No Constant Burning Pilot Automatic Means for Adjusting Water Temperature Gas Steam No Constant Burning Pilot Oil Hot Water Automatic Means for Adjusting Water Temperature Oil Steam None Electric Hot water Automatic Means for Adjusting Water

  19. International Review of the Development and Implementation of Energy Efficiency Standards and Labeling Programs

    SciTech Connect (OSTI)

    Zhou, Nan; Zheng, Nina; Fridley, David

    2012-02-28

    Appliance energy efficiency standards and labeling (S&L) programs have been important policy tools for regulating the efficiency of energy-using products for over 40 years and continue to expand in terms of geographic and product coverage. The most common S&L programs include mandatory minimum energy performance standards (MEPS) that seek to push the market for efficient products, and energy information and endorsement labels that seek to pull the market. This study seeks to review and compare some of the earliest and most well-developed S&L programs in three countries and one region: the U.S. MEPS and ENERGY STAR, Australia MEPS and Energy Label, European Union MEPS and Ecodesign requirements and Energy Label and Japanese Top Runner programs. For each program, key elements of S&L programs are evaluated and comparative analyses across the programs undertaken to identify best practice examples of individual elements as well as cross-cutting factors for success and lessons learned in international S&L program development and implementation. The international review and comparative analysis identified several overarching themes and highlighted some common factors behind successful program elements. First, standard-setting and programmatic implementation can benefit significantly from a legal framework that stipulates a specific timeline or schedule for standard-setting and revision, product coverage and legal sanctions for non-compliance. Second, the different MEPS programs revealed similarities in targeting efficiency gains that are technically feasible and economically justified as the principle for choosing a standard level, in many cases at a level that no product on the current market could reach. Third, detailed survey data such as the U.S. Residential Energy Consumption Survey (RECS) and rigorous analyses provide a strong foundation for standard-setting while incorporating the participation of different groups of stakeholders further strengthen the process

  20. Revision of the Energy-Efficiency Requirements in the Manufactured Home Construction and Safety Standards

    SciTech Connect (OSTI)

    Conner, Craig C.; Dillon, Heather E.; Lucas, Robert G.; Lubliner, Michael

    2004-06-01

    Energy-efficiency requirements were developed for manufactured (mobile) homes, which are regulated by the U.S. Department of Housing and Urban Development. A life-cycle cost analysis from the homeowner's perspective was used to establish parameters for a least-cost home in a large number of cities. Economic, financial, and energy-efficiency measures for the life-cycle cost analysis were selected and documented. The resulting energy-efficiency levels were aggregated to zones that were expressed as a maximum overall home U-factor (thermal transmittance) requirement for the building envelope. The proposed revised standard's costs, benefits, and net value to the consumer were quantified. This analysis updates a similar effort completed in 1992, which was the basis for the existing HUD code overall U-factor requirement.

  1. High efficiency light source using solid-state emitter and down-conversion material

    DOE Patents [OSTI]

    Narendran, Nadarajah; Gu, Yimin; Freyssinier, Jean Paul

    2010-10-26

    A light emitting apparatus includes a source of light for emitting light; a down conversion material receiving the emitted light, and converting the emitted light into transmitted light and backward transmitted light; and an optic device configured to receive the backward transmitted light and transfer the backward transmitted light outside of the optic device. The source of light is a semiconductor light emitting diode, a laser diode (LD), or a resonant cavity light emitting diode (RCLED). The down conversion material includes one of phosphor or other material for absorbing light in one spectral region and emitting light in another spectral region. The optic device, or lens, includes light transmissive material.

  2. Revolutionary Method for Increasing the Efficiency of White Light Quantum Dot LEDs

    SciTech Connect (OSTI)

    Duty, Chad E [ORNL; Bennett, Charlee J C [ORNL; Sabau, Adrian S [ORNL; Jellison Jr, Gerald Earle [ORNL; Boudreaux, Philip R [ORNL; Walker, Steven C [ORNL; Ott, Ronald D [ORNL

    2011-01-01

    Covering a light-emitting diode (LED) with quantum dots (QDs) can produce a broad spectrum of white light. However, current techniques for applying QDs to LEDs suffer from a high density of defects and a non-uniform distribution of QDs, which respec-tively diminish the efficiency and quality of emitted light. Oak Ridge National Laboratory (ORNL) has the unique capability to thermally anneal QD structures at extremely high power densities for very short durations. This process, called pulse thermal proc-essing (PTP), reduces the number of point defects while main-taining the size and shape of the original QD nanostructure. Therefore, the efficiency of the QD wavelength conversion layer is improved without altering the emission spectrum defined by the size distribution of the quantum dot nanoparticles. The cur-rent research uses a thermal model to predict annealing tempera-tures during PTP and demonstrates up to a 300% increase in pho-toluminescence for QDs on passive substrates

  3. Efficient visible-light photocatalytic performance of cuprous oxide porous nanosheet arrays

    SciTech Connect (OSTI)

    Li, Xianghua; Wang, Jianqiang; Cao, Minhua

    2015-10-15

    Graphical Abstract: We demonstrated a facile and efficient process for fabricating Cu{sub 2}O porous nanosheet arrays on Cu mesh. Benefiting from the 1D array structure and porous structure, the as-prepared Cu{sub 2}O sample exhibited significantly improved photocatalytic activity for methyl orange degradation under visible light irradiation. - Highlights: • Cu{sub 2}O porous nanosheet arrays on Cu mesh were synthesized via the facile and efficient process. • The Cu{sub 2}O sample exhibited the 1D array structure and porous nanosheet morphology. • The as-prepared Cu{sub 2}O porous nanosheet arrays exhibited significantly improved photocatalytic activity. - Abstract: One-dimensional nanostructures are of great interest for a wide range of applications. In this work, we demonstrated the fabrication of visible-light-responsive Cu{sub 2}O porous nanosheet arrays. The synthesis involved the growth of Cu(OH){sub 2} nanosheet arrays on Cu mesh by solution-based corrosion and thermal transformation of Cu(OH){sub 2} nanosheet to Cu{sub 2}O porous nanosheets on Cu mesh. Benefiting from the one dimensional array structure and porous structure, the as-prepared Cu{sub 2}O porous nanosheet arrays exhibited significantly improved photocatalytic activity for methyl orange degradation under visible light irradiation.

  4. Independence Power and Light- New Homes Rebate Program

    Broader source: Energy.gov [DOE]

    Independence Power and Light offers rebates to builders for constructing new, energy efficient homes which meet ENERGY STAR standards. Builders who meet ENERGY STAR standards and install specified...

  5. Efficiency Improvement Opportunities for Light-Duty Natural-Gas-Fueled Vehicles

    SciTech Connect (OSTI)

    Staunton, R.H.; Thomas, J.F.

    1998-12-01

    The purpose of this report is to evaluate and make recommendations concerning technologies that promise to improve the efilciency of compressed natural gas (CNG) light-duty vehicles. Technical targets for CNG automotive technology given in the March 1998 OffIce of Advanced Automotive Technologies research and development plan were used as guidance for this effort. The technical target that necessitates this current study is to validate technologies that enable CNG light vehicles to have at least 10% greater - fuel economy (on a miles per gallon equivalent basis) than equivalent gasoline vehicles by 2006. Other tar- gets important to natural gas (NG) automotive technology and this study are to: (1) increase CNG vehicle range to 380 miles, (2) reduce the incremental vehicle cost (CNG vs gasoline) to $1500, and (3) meet the California ultra low-emission vehicle (ULEV) and Federal Tier 2 emission standards expected to be in effect in 2004.

  6. The effects of concentrated ultraviolet light on high-efficiency silicon solar cells

    SciTech Connect (OSTI)

    Ruby, D.S.; Schubert, W.K.

    1991-01-01

    The importance of stability in the performance of solar cells is clearly recognized as fundamental. Some of the highest efficiency silicon solar cells demonstrated to date, such as the Point Contact solar cell and the Passivated Emitter solar cell, rely upon the passivation of cell surfaces in order to minimize recombination, which reduces cell power output. Recently, it has been shown that exposure to ultraviolet (UV) light of wavelengths present in the terrestrial solar spectrum can damage a passivating silicon-oxide interface and increase recombination. In this study, we compared the performance of Point Contact and Passivated Emitter solar cells after exposure to UV light. We also examined the effect of UV exposure on oxide-passivated silicon wafers. We found that current Passivated Emitter designs are stable at both one-sun and under concentrated sunlight. The evolution of Point Contact concentrator cell performance shows a clear trend towards more stable cells. 15 refs., 18 figs.

  7. New Energy Efficiency Standards for Furnace Fans to Reduce Carbon Pollution, Help Americans Save on Energy Bills

    Office of Energy Efficiency and Renewable Energy (EERE)

    WASHINGTON – As part of President Obama’s Climate Action Plan, the Energy Department today announced a new energy efficiency standard for furnace fans, the latest of eight finalized standards and nine proposed standards issued since the Climate Action Plan was announced last year.

  8. EA-2001: Energy Efficiency Standards for New Federal Commercial and Multi-Family High-Rise Residential Buildings' Baseline Standards Update (RIN 1904-AD39)

    Office of Energy Efficiency and Renewable Energy (EERE)

    The U.S. Department of Energy (DOE) is publishing this final rule to implement provisions in the Energy Conservation and Production Act (ECPA) that require DOE to update the baseline Federal energy efficiency performance standards for the construction of new Federal commercial and multi-family high-rise residential buildings. This rule updates the baseline Federal commercial standard to the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) Standard 90.1-2013.

  9. Philips Light Sources & Electronics is Developing an Efficient, Smaller, Cost-Effective Family of LED Drivers

    Broader source: Energy.gov [DOE]

    With the help of DOE funding, Philips Light Sources & Electronics is developing a new family of LED drivers that are more efficient and cost-effective as well as smaller in size than currently available drivers. The new drivers are switch-mode power supplies that are similar to today's drivers, but with an improved design. In addition, they have a different topology—boost plus LLC—for wattages of 40W and above, but they retain the commonly used flyback topology at lower wattages.

  10. Regional cooperation in energy efficiency standard-setting and labeling in North America

    SciTech Connect (OSTI)

    Wiel, Stephen; Van Wie McGrory, Laura

    2003-08-04

    The North American Energy Working Group (NAEWG) was established in 2001 by the governments of Canada, Mexico, and the United States. The goals of NAEWG are to foster communication and cooperation on energy-related matters of common interest, and to enhance North American energy trade and interconnections consistent with the goal of sustainable development, for the benefit of all three countries. At its outset, NAEWG established teams to address different aspects of the energy sector. One, the Energy Efficiency Expert Group, undertook activity in three areas: (1) analyzing commonalities and differences in the test procedures of Canada, Mexico, and the United States, and identifying specific products for which the three countries might consider harmonization; (2) exploring possibilities for increased mutual recognition of laboratory test results; and (3) looking at possibilities for enhanced cooperation in the Energy Star voluntary endorsement labeling program. To support NAEWG's Expert Group on Energy Efficiency (NAEWG-EE), USDOE commissioned Lawrence Berkeley National Laboratory, representing 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 identified 46 energy-using products for which at least one of the three countries has energy efficiency regulations. Three products--refrigerators/freezers, room air conditioners, and integral horsepower three-phase electric motors--have identical minimum energy performance standards (MEPS) and test procedures in the three countries. Ten other products have different MEPS and test procedures, but have the near-term potential for harmonization. NAEWG-EE is currently working to identify mechanisms for mutual recognition of test results. With consultative support from the United States and Canada through NAEWG-EE, Mexico is exploring possibilities for

  11. Buildings Energy Data Book: 7.3 Efficiency Standards for Residential HVAC

    Buildings Energy Data Book [EERE]

    2 Efficiency Standards for Residential Furnaces AFUE (%) (2) Furnaces (excluding classes noted below) 78 Mobile Home Furnaces 75 Small Furnaces with input rate < 45,000 Btu/hr (1) - Weatherized (outdoor) 78 - Non-Weatherized (indoor) 78 AFUE (%) (2) Non-Weatherized Gas Furnaces 80 Weatherized Gas Furnaces 81 Mobile Home Oil-Fired Furnaces 75 Mobile home Gas Furnaces 80 Non-Weatherized Oil-Fired Furnaces 82 Weatherized Oil-Fired Furnaces 78 Note(s): 1) Excludes those intended solely for

  12. Buildings Energy Data Book: 7.5 Efficiency Standards for Residential Appliances

    Buildings Energy Data Book [EERE]

    3 Efficiency Standards for Residential Water Heaters (1) Effective for products manufactured from January 20, 2004 through April 15, 2015 Gas-Fired Storage Water Heaters Oil-Fired Water Heaters EF = 0.67 - (0.0019 x Rated Storage Volume in gallons) EF = 0.59 - (0.0019 x Rated Storage Volume in gallons) Instantaneous Gas-Fired Water Heaters Instantaneous Electric and Table Top Water Heaters EF = 0.62 - (0.0019 x Rated Storage Volume in gallons) EF = 0.93 - (0.00132 x Rated Storage Volume in

  13. Buildings Energy Data Book: 7.5 Efficiency Standards for Residential Appliances

    Buildings Energy Data Book [EERE]

    4 Efficiency Standards for Wet Cleaning Equipment Effective from products manufactured from January 1, 2007 through December 31, 2011 Top-Loading, Compact (Capacity < 1.6 ft^3) Front-Loading, Compact (Capacity < 1.6 ft^3) Top-Loading, Semi-Automatic (1) Suds-Saving (1) Effective for products manufactured on or after January 1, 2011 Top-Loading, Compact (Capacity ≥ 1.6 ft^3) Front-Loading, Compact (Capacity ≥ 1.6 ft^3) Dishwashers: Effective for products manufactured on or after January

  14. 2014-10-27 Issuance: Energy Conservation Standards for Ceiling Fan Light Kits; Notice of Public Meeting and Availability of the Preliminary Technical Support Document

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register notice of public meeting and availability of the preliminary technical support document regarding energy conservation standards for ceiling fan light kits, as issued by the Deputy Assistant Secretary for Energy Efficiency on October 27, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  15. 14th Semi-Annual Report to Congress on Appliance Energy Efficiency Rulemakings … Implementation Report: Energy Conservation Standards Activities

    Broader source: Energy.gov [DOE]

    This document is the Fourteenth Semi-Annual Report to Congress on Appliance Energy Efficiency Rulemakings … Implementation Report: Energy Conservation Standards Activities, as issued by the Assistant Secretary on August 2013.

  16. New Energy Efficiency Standards for Residential Clothes Washers and Dishwashers to Save Consumers Billions on Energy Bills

    Broader source: Energy.gov [DOE]

    The Department of Energy today announced common-sense energy efficiency standards for residential clothes washers and dishwashers that will save consumers $20 billion in energy and water costs.

  17. Highly efficient greenish-blue platinum-based phosphorescent organic light-emitting diodes on a high triplet energy platform

    SciTech Connect (OSTI)

    Chang, Y. L. Gong, S. White, R.; Lu, Z. H.; Wang, X.; Wang, S.; Yang, C.

    2014-04-28

    We have demonstrated high-efficiency greenish-blue phosphorescent organic light-emitting diodes (PHOLEDs) based on a dimesitylboryl-functionalized C^N chelate Pt(II) phosphor, Pt(m-Bptrz)(t-Bu-pytrz-Me). Using a high triplet energy platform and optimized double emissive zone device architecture results in greenish-blue PHOLEDs that exhibit an external quantum efficiency of 24.0% and a power efficiency of 55.8?lm/W. This record high performance is comparable with that of the state-of-the-art Ir-based sky-blue organic light-emitting diodes.

  18. Impact of photonic crystals on LED light extraction efficiency: approaches and limits to vertical structure designs

    SciTech Connect (OSTI)

    Matioli, Elison; Weisbuch, Claude

    2010-08-19

    The enhancement of the extraction efficiency in light emitting diodes (LEDs) through the use of photonic crystals (PhCs) requires a structure design that optimizes the interaction of the guided modes with the PhCs. The main optimization parameters are related to the vertical structure of the LED, such as the thickness of layers, depth of the PhCs, position of the quantum wells as well as the PhC period and fill factor. We review the impact of the vertical design of different approaches of PhC LEDs through a theoretical and experimental standpoint, assessing quantitatively the competing mechanisms that act over each guided mode. Three approaches are described to overcome the main limitation of LEDs with surface PhCs, i.e. the insufficient interaction of low order guided modes with the PhCs. The introduction of an AlGaN confining layer in such structure is shown to be effective in extracting a fraction of the optical energy of low order modes; however, this approach is limited by the growth of the lattice mismatched AlGaN layer on GaN. The second approach, based on thin-film LEDs with PhCs, is limited by the presence of an absorbing reflective metal layer close to the guided modes that plays a major role in the competition between PhC extraction and metal dissipation. Finally, we demonstrate both experimentally and theoretically the superior extraction of the guided light in embedded PhC LEDs due to the higher interaction between all optical modes and the PhCs, which resulted in a close to unity extraction efficiency for this device. The use of high-resolution angle-resolved measurements to experimentally determine the PhC extraction parameters was an essential tool for corroborating the theoretical models and quantifying the competing absorption and extraction mechanisms in LEDs.

  19. EnergyPlus Analysis Capabilities for Use in California Building Energy Efficiency Standards Development and Compliance Calculations

    SciTech Connect (OSTI)

    Hong, Tianzhen; Buhl, Fred; Haves, Philip

    2008-03-28

    California has been using DOE-2 as the main building energy analysis tool in the development of building energy efficiency standards (Title 24) and the code compliance calculations. However, DOE-2.1E is a mature program that is no longer supported by LBNL on contract to the USDOE, or by any other public or private entity. With no more significant updates in the modeling capabilities of DOE-2.1E during recent years, DOE-2.1E lacks the ability to model, with the necessary accuracy, a number of building technologies that have the potential to reduce significantly the energy consumption of buildings in California. DOE-2's legacy software code makes it difficult and time consuming to add new or enhance existing modeling features in DOE-2. Therefore the USDOE proposed to develop a new tool, EnergyPlus, which is intended to replace DOE-2 as the next generation building simulation tool. EnergyPlus inherited most of the useful features from DOE-2 and BLAST, and more significantly added new modeling capabilities far beyond DOE-2, BLAST, and other simulations tools currently available. With California's net zero energy goals for new residential buildings in 2020 and for new commercial buildings in 2030, California needs to evaluate and promote currently available best practice and emerging technologies to significantly reduce energy use of buildings for space cooling and heating, ventilating, refrigerating, lighting, and water heating. The California Energy Commission (CEC) needs to adopt a new building energy simulation program for developing and maintaining future versions of Title 24. Therefore, EnergyPlus became a good candidate to CEC for its use in developing and complying with future Title 24 upgrades. In 2004, the Pacific Gas and Electric Company contracted with ArchitecturalEnergy Corporation (AEC), Taylor Engineering, and GARD Analytics to evaluate EnergyPlus in its ability to model those energy efficiency measures specified in both the residential and

  20. Improving the Efficiency of Light-Duty Vehicle HVAC Systems using...

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

    More Documents & Publications Thermoelectric HVAC for Light-Duty Vehicle Applications Thermoelectric HVAC and Thermal Comfort Enablers for Light-Duty Vehicle Applications ...

  1. National Energy Efficiency Evaluation, Measurement and Verification (EM&V) Standard: Scoping Study of Issues and Implementation Requirements

    SciTech Connect (OSTI)

    Schiller Consulting, Inc.; Schiller, Steven R.; Goldman, Charles A.; Galawish, Elsia

    2011-02-04

    This report is a scoping study that identifies issues associated with developing a national evaluation, measurement and verification (EM&V) standard for end-use, non-transportation, energy efficiency activities. The objectives of this study are to identify the scope of such a standard and define EM&V requirements and issues that will need to be addressed in a standard. To explore these issues, we provide and discuss: (1) a set of definitions applicable to an EM&V standard; (2) a literature review of existing guidelines, standards, and 'initiatives' relating to EM&V standards as well as a review of 'bottom-up' versus 'top-down' evaluation approaches; (3) a summary of EM&V related provisions of two recent federal legislative proposals (Congressman Waxman's and Markey's American Clean Energy and Security Act of 2009 and Senator Bingaman's American Clean Energy Leadership Act of 2009) that include national efficiency resource requirements; (4) an annotated list of issues that that are likely to be central to, and need to be considered when, developing a national EM&V standard; and (5) a discussion of the implications of such issues. There are three primary reasons for developing a national efficiency EM&V standard. First, some policy makers, regulators and practitioners believe that a national standard would streamline EM&V implementation, reduce costs and complexity, and improve comparability of results across jurisdictions; although there are benefits associated with each jurisdiction setting its own EM&V requirements based on their specific portfolio and evaluation budgets and objectives. Secondly, if energy efficiency is determined by the US Environmental Protection Agency to be a Best Available Control Technology (BACT) for avoiding criteria pollutant and/or greenhouse gas emissions, then a standard can be required for documenting the emission reductions resulting from efficiency actions. The third reason for a national EM&V standard is that such a standard is

  2. Development of Technologies for a High Efficiency, Very Low Emission, Diesel Engine for Light Trucks and Sport Utility Vehicles

    SciTech Connect (OSTI)

    Stang, John H.

    1997-12-01

    Cummins Inc., in partnership with the Department of Energy, has developed technology for a new highly efficient, very low emission, diesel engine for light trucks and sport utility vehicles. This work began in April 1997, and started with very aggressive goals for vehicles in the 5751 to 8500 pound GCW weight class. The primary program goals were as follows: (1) EMISSIONS NOx = 0.50 g/mi PM = 0.05 g/mi CO = 2.8 g/mi NMHC = 0.07 g/mi California decided to issue new and even tougher LEV II light truck regulations late in 1999. EPA also issued its lower Tier 2 regulations late in 2000. The net result was that the targets for this diesel engine project were lowered, and these goals were eventually modified by the publication of Federal Tier 2 emission standards early in 2000 to the following: NOx = 0.07 g/mi PM = 0.01 g/mi (2) FUEL ECONOMY The fuel economy goal was 50 percent MPG improvement (combined city/highway) over the 1997 gasoline powered light truck or sport utility vehicle in the vehicle class for which this diesel engine is being designed to replace. The goal for fuel economy remained at 50 percent MPG improvement, even with the emissions goal revisions. (3) COOPERATIVE DEVELOPMENT Regular design reviews of the engine program will be conducted with a vehicle manufacturer to insure that the concepts and design specifics are commercially feasible. (DaimlerChrysler has provided Cummins with this design review input.) Cummins has essentially completed a demonstration of proof-of-principle for a diesel engine platform using advanced combustion and fuel system technologies. Cummins reported very early progress in this project, evidence that new diesel engine technology had been developed that demonstrated the feasibility of the above emissions goals. Emissions levels of NOx = 0.4 g/mi and PM = 0.06 g/mi were demonstrated for a 5250 lb. test weight vehicle with passive aftertreatment only. These results were achieved using the full chassis dynamometer FTP-75 test

  3. Development of Technologies for a High Efficiency, Very Low Emission, Diesel Engine for Light Trucks and Sport Utility Vehicles

    SciTech Connect (OSTI)

    Stang, John H.

    2005-12-19

    Cummins Inc., in partnership with the Department of Energy, has developed technology for a new highly efficient, very low emission, diesel engine for light trucks and sport utility vehicles. This work began in April 1997, and started with very aggressive goals for vehicles in the 5751 to 8500 pound GCW weight class. The primary program goals were as follows: (1) EMISSIONS -- NOx = 0.50 g/mi; PM = 0.05 g/mi; CO = 2.8 g/mi; and NMHC = 0.07 g/mi. California decided to issue new and even tougher LEV II light truck regulations late in 1999. EPA also issued its lower Tier 2 regulations late in 2000. The net result was that the targets for this diesel engine project were lowered, and these goals were eventually modified by the publication of Federal Tier 2 emission standards early in 2000 to the following: NOx = 0.07 g/mi; and PM = 0.01 g/mi. (2) FUEL ECONOMY -- The fuel economy goal was 50 percent MPG improvement (combined city/highway) over the 1997 gasoline powered light truck or sport utility vehicle in the vehicle class for which this diesel engine is being designed to replace. The goal for fuel economy remained at 50 percent MPG improvement, even with the emissions goal revisions. (3) COOPERATIVE DEVELOPMENT -- Regular design reviews of the engine program will be conducted with a vehicle manufacturer to insure that the concepts and design specifics are commercially feasible. (DaimlerChrysler has provided Cummins with this design review input.) Cummins has essentially completed a demonstration of proof-of-principle for a diesel engine platform using advanced combustion and fuel system technologies. Cummins reported very early progress in this project, evidence that new diesel engine technology had been developed that demonstrated the feasibility of the above emissions goals. Emissions levels of NOx = 0.4 g/mi and PM = 0.06 g/mi were demonstrated for a 5250 lb. test weight vehicle with passive aftertreatment only. These results were achieved using the full chassis

  4. Development of Technologies for a High Efficiency, Very Low Emission, Diesel Engine for Light Trucks and Sport Utility Vehicles

    SciTech Connect (OSTI)

    John H. Stang

    2005-12-31

    Cummins Inc., in partnership with the Department of Energy, has developed technology for a new highly efficient, very low emission, diesel engine for light trucks and sport utility vehicles. This work began in April 1997, and started with very aggressive goals for vehicles in the 5751 to 8500 pound GCW weight class. The primary program goals were as follows: (1) EMISSIONS--NO{sub x} = 0.50 g/mi; PM = 0.05 g/mi; CO = 2.8 g/mi; and NMHC = 0.07 g/mi. California decided to issue new and even tougher LEV II light truck regulations late in 1999. EPA also issued its lower Tier 2 regulations late in 2000. The net result was that the targets for this diesel engine project were lowered, and these goals were eventually modified by the publication of Federal Tier 2 emission standards early in 2000 to the following: NO{sub x} = 0.07 g/mi; and PM = 0.01 g/mi. (2) FUEL ECONOMY--The fuel economy goal was 50 percent MPG improvement (combined city/highway) over the 1997 gasoline powered light truck or sport utility vehicle in the vehicle class for which this diesel engine is being designed to replace. The goal for fuel economy remained at 50 percent MPG improvement, even with the emissions goal revisions. (3) COOPERATIVE DEVELOPMENT--Regular design reviews of the engine program will be conducted with a vehicle manufacturer to insure that the concepts and design specifics are commercially feasible. (DaimlerChrysler has provided Cummins with this design review input.) Cummins has essentially completed a demonstration of proof-of-principle for a diesel engine platform using advanced combustion and fuel system technologies. Cummins reported very early progress in this project, evidence that new diesel engine technology had been developed that demonstrated the feasibility of the above emissions goals. Emissions levels of NOx = 0.4 g/mi and PM = 0.06 g/mi were demonstrated for a 5250 lb. test weight vehicle with passive aftertreatment only. These results were achieved using the full

  5. Full phosphorescent white-light organic light-emitting diodes with improved color stability and efficiency by fine tuning primary emission contributions

    SciTech Connect (OSTI)

    Hua, Wang, E-mail: wmsu2008@sinano.ac.cn, E-mail: wanghua001@tyut.edu.cn; Du, Xiaogang [Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024 (China) [Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024 (China); Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024 (China); Su, Wenming, E-mail: wmsu2008@sinano.ac.cn, E-mail: wanghua001@tyut.edu.cn; Zhang, Dongyu [Printable Electronics Research Centre, Suzhou Institute of Nano-Tech and Nano-Bionics, CAS, suzhou 215123 (China)] [Printable Electronics Research Centre, Suzhou Institute of Nano-Tech and Nano-Bionics, CAS, suzhou 215123 (China); Lin, Wenjing [Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024 (China) [Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024 (China); Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024 (China); Printable Electronics Research Centre, Suzhou Institute of Nano-Tech and Nano-Bionics, CAS, suzhou 215123 (China)

    2014-02-15

    In this paper, a novel type of white-light organic light emitting diode (OLED) with high color stability was reported, in which the yellow-light emission layer of (4,4{sup ?}-N,N{sup ?}-dicarbazole)biphenyl (CBP) : tris(2-phenylquinoline-C2,N{sup ?})iridium(III) (Ir(2-phq){sub 3}) was sandwiched by double blue-light emission layers of 1,1-bis-[(di-4-tolylamino)pheny1]cyclohexane (TAPC) : bis[4,6-(di-fluorophenyl)-pyridinato-N,C2{sup ?}]picolinate (FIrpic) and tris[3-(3-pyridyl)mesityl]borane (3TPYMB):FIrpic. And, it exhibited the maximum current efficiency of 33.1 cd/A, the turn-on voltage at about 3 V and the maximum luminance in excess of 20000 cd/m{sup 2}. More important, it realized very stable white-light emission, and its CIE(x, y) coordinates only shift from (0.34, 0.37) to (0.33, 0.37) as applied voltage increased from 5 V to 12 V. It is believed that the new scheme in emission layer of white-light OLED can fine tune the contribution of primary emission with applied voltage changed, resulting in high quality white-light OLED.

  6. ISSUANCE 2015-02-03: Energy Efficiency Program for Residential Products: Energy Conservation Standards for Miscellaneous Refrigeration Products, Reopening of Public Comment Period

    Broader source: Energy.gov [DOE]

    Energy Efficiency Program for Residential Products: Energy Conservation Standards for Miscellaneous Refrigeration Products, Reopening of Public Comment Period

  7. ISSUANCE 2015-08-14: Energy Efficiency Program for Consumer Products: Energy Conservation Standards for Fluorescent Lamp Ballasts, Reopening of the Comment Period

    Broader source: Energy.gov [DOE]

    Energy Efficiency Program for Consumer Products: Energy Conservation Standards for Fluorescent Lamp Ballasts, Reopening of the Comment Period

  8. Energy Conservation Standards for Ceiling Fan Light Kits Notice of Proposed Rulemaking

    Broader source: Energy.gov [DOE]

    Energy Conservation Program: Energy Conservation Standards for Ceiling Fan Notice of proposed rulemaking (NOPR) and announcement of public meeting.

  9. Energy Efficiency Standards for Microwave Ovens Saves Consumers Energy and Updates the Social Cost of Carbon

    Broader source: Energy.gov [DOE]

    EERE's new microwave standards will reduce carbon pollution and save consumers money on their energy bills.

  10. Enhancement of efficiencies for tandem green phosphorescent organic light-emitting devices with a p-type charge generation layer

    SciTech Connect (OSTI)

    Yoo, Byung Soo; Jeon, Young Pyo; Lee, Dae Uk; Kim, Tae Whan

    2014-10-15

    The operating voltage of the tandem green phosphorescent organic light-emitting device with a 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile layer was improved by 3% over that of the organic light-emitting device with a molybdenum trioxide layer. The maximum brightness of the tandem green phosphorescent organic light-emitting device at 21.9 V was 26,540 cd/m{sup 2}. The dominant peak of the electroluminescence spectra for the devices was related to the fac-tris(2-phenylpyridine) iridium emission. - Highlights: Tandem OLEDs with CGL were fabricated to enhance their efficiency. The operating voltage of the tandem OLED with a HAT-CN layer was improved by 3%. The efficiency and brightness of the tandem OLED were 13.9 cd/A and 26,540 cd/m{sup 2}. Efficiency of the OLED with a HAT-CN layer was lower than that with a MoO{sub 3} layer. - Abstract: Tandem green phosphorescent organic light-emitting devices with a 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile or a molybdenum trioxide charge generation layer were fabricated to enhance their efficiency. Current densityvoltage curves showed that the operating voltage of the tandem green phosphorescent organic light-emitting device with a 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile layer was improved by 3% over that of the corresponding organic light-emitting device with a molybdenum trioxide layer. The efficiency and the brightness of the tandem green phosphorescent organic light-emitting device were 13.9 cd/A and 26,540 cd/m{sup 2}, respectively. The current efficiency of the tandem green phosphorescent organic light-emitting device with a 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile layer was lower by 1.1 times compared to that of the corresponding organic light-emitting device with molybdenum trioxide layer due to the decreased charge generation and transport in the 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile layer resulting from triplettriplet exciton annihilation.

  11. American National Standard: design requirements for light water reactor spent fuel storage facilities at nuclear power plants

    SciTech Connect (OSTI)

    Not Available

    1983-10-07

    This standard presents necessary design requirements for facilities at nuclear power plants for the storage and preparation for shipment of spent fuel from light-water moderated and cooled nuclear power stations. It contains requirements for the design of fuel storage pool; fuel storage racks; pool makeup, instrumentation and cleanup systems; pool structure and integrity; radiation shielding; residual heat removal; ventilation, filtration and radiation monitoring systems; shipping cask handling and decontamination; building structure and integrity; and fire protection and communication.

  12. Method to generate high efficient devices which emit high quality light for illumination

    DOE Patents [OSTI]

    Krummacher, Benjamin C.; Mathai, Mathew; Choong, Vi-En; Choulis, Stelios A.

    2009-06-30

    An electroluminescent apparatus includes an OLED device emitting light in the blue and green spectrums, and at least one down conversion layer. The down conversion layer absorbs at least part of the green spectrum light and emits light in at least one of the orange spectra and red spectra.

  13. LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC Engineering Service Center

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

    LED parking area lights at the NAVFAC Engineering Service Center at Port Hueneme provide high quality, evenly distributed light. Photo courtesy of PNNL because of its long rated life and high effciency relative to other options. However, high-pressure sodium technol- ogy is not without drawbacks, such as a low color rendition, a result of its narrow spectral distribution and low color temperature. While metal halide lamps provide whiter light and better color rendition compared to high-pressure

  14. EA-2020: Energy Efficiency Design Standards for New Federal Low-Rise Residential Buildings (RIN# 1904-AD56)

    Broader source: Energy.gov [DOE]

    This EA will evaluate the potential environmental impacts of implementing the provisions in the Energy Conservation and Production Act (ECPA) that require DOE to update the baseline Federal energy efficiency performance standards for the construction of new Federal buildings, including low-rise residential buildings.

  15. EA-1926: Energy Efficiency Design Standards for New Federal Low-Rise Residential Buildings (RIN# 1904-AC61)

    Broader source: Energy.gov [DOE]

    This EA was to evaluate the potential environmental impacts of implementing the provisions in the Energy Conservation and Production Act (ECPA) that require DOE to update the baseline Federal energy efficiency performance standards for the construction of new Federal buildings, including low-rise residential buildings. DOE has canceled this EA and is replacing it with EA-2020.

  16. High Efficiency Clean Combustion in Multi-Cylinder Light-Duty...

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

    11 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit ... Combustion in Multi-Cylinder Light-Duty Engines Vehicle Technologies Office Merit Review ...

  17. Estes Park Light and Power Department- Commercial and Industrial Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Estes Park Power & Light, in conjunction with the Platte River Power Authority provides businesses incentives for new construction projects and existing building retrofits. The Electric...

  18. Performance of Linear and Nonlinear Two-Leaf Light Use Efficiency Models at Different Temporal Scales

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Wu, Xiaocui; Ju, Weimin; Zhou, Yanlian; He, Mingzhu; Law, Beverly E.; Black, T. Andrew; Margolis, Hank A.; Cescatti, Alessandro; Gu, Lianhong; Montagni, Leonardo; et al

    2015-02-25

    The reliable simulation of gross primary productivity (GPP) at various spatial and temporal scales is of significance to quantifying the net exchange of carbon between terrestrial ecosystems and the atmosphere. This study aimed to verify the ability of a nonlinear two-leaf model (TL-LUEn), a linear two-leaf model (TL-LUE), and a big-leaf light use efficiency model (MOD17) to simulate GPP at half-hourly, daily and 8-day scales using GPP derived from 58 eddy-covariance flux sites in Asia, Europe and North America as benchmarks. Model evaluation showed that the overall performance of TL-LUEn was slightly but not significantly better than TL-LUE at half-hourlymore » and daily scale, while the overall performance of both TL-LUEn and TL-LUE were significantly better (p < 0.0001) than MOD17 at the two temporal scales. The improvement of TL-LUEn over TL-LUE was relatively small in comparison with the improvement of TL-LUE over MOD17. However, the differences between TL-LUEn and MOD17, and TL-LUE and MOD17 became less distinct at the 8-day scale. As for different vegetation types, TL-LUEn and TL-LUE performed better than MOD17 for all vegetation types except crops at the half-hourly scale. At the daily and 8-day scales, both TL-LUEn and TL-LUE outperformed MOD17 for forests. However, TL-LUEn had a mixed performance for the three non-forest types while TL-LUE outperformed MOD17 slightly for all these non-forest types at daily and 8-day scales. The better performance of TL-LUEn and TL-LUE for forests was mainly achieved by the correction of the underestimation/overestimation of GPP simulated by MOD17 under low/high solar radiation and sky clearness conditions. TL-LUEn is more applicable at individual sites at the half-hourly scale while TL-LUE could be regionally used at half-hourly, daily and 8-day scales. MOD17 is also an applicable option regionally at the 8-day scale.« less

  19. Performance of Linear and Nonlinear Two-Leaf Light Use Efficiency Models at Different Temporal Scales

    SciTech Connect (OSTI)

    Wu, Xiaocui; Ju, Weimin; Zhou, Yanlian; He, Mingzhu; Law, Beverly E.; Black, T. Andrew; Margolis, Hank A.; Cescatti, Alessandro; Gu, Lianhong; Montagni, Leonardo; Noormets, Asko; Griffis, Timothy J.; Pilegaard, Kim; Varlagin, Andrej; Valentini, Riccardo; Blanken, Peter D.; Wang, Shaoquiang; Wang, Huimin; Han, Shijie; Yan, Junhau; Li, Yingnian; Zhou, Bingbing; Liu, Yibo

    2015-02-25

    The reliable simulation of gross primary productivity (GPP) at various spatial and temporal scales is of significance to quantifying the net exchange of carbon between terrestrial ecosystems and the atmosphere. This study aimed to verify the ability of a nonlinear two-leaf model (TL-LUEn), a linear two-leaf model (TL-LUE), and a big-leaf light use efficiency model (MOD17) to simulate GPP at half-hourly, daily and 8-day scales using GPP derived from 58 eddy-covariance flux sites in Asia, Europe and North America as benchmarks. Model evaluation showed that the overall performance of TL-LUEn was slightly but not significantly better than TL-LUE at half-hourly and daily scale, while the overall performance of both TL-LUEn and TL-LUE were significantly better (p < 0.0001) than MOD17 at the two temporal scales. The improvement of TL-LUEn over TL-LUE was relatively small in comparison with the improvement of TL-LUE over MOD17. However, the differences between TL-LUEn and MOD17, and TL-LUE and MOD17 became less distinct at the 8-day scale. As for different vegetation types, TL-LUEn and TL-LUE performed better than MOD17 for all vegetation types except crops at the half-hourly scale. At the daily and 8-day scales, both TL-LUEn and TL-LUE outperformed MOD17 for forests. However, TL-LUEn had a mixed performance for the three non-forest types while TL-LUE outperformed MOD17 slightly for all these non-forest types at daily and 8-day scales. The better performance of TL-LUEn and TL-LUE for forests was mainly achieved by the correction of the underestimation/overestimation of GPP simulated by MOD17 under low/high solar radiation and sky clearness conditions. TL-LUEn is more applicable at individual sites at the half-hourly scale while TL-LUE could be regionally used at half-hourly, daily and 8-day scales. MOD17 is also an applicable option regionally at the 8-day scale.

  20. Highly efficient inverted top emitting organic light emitting diodes using a transparent top electrode with color stability on viewing angle

    SciTech Connect (OSTI)

    Kim, Jung-Bum; Lee, Jeong-Hwan; Moon, Chang-Ki; Kim, Jang-Joo, E-mail: jjkim@snu.ac.kr [Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of)

    2014-02-17

    We report a highly efficient phosphorescent green inverted top emitting organic light emitting diode with excellent color stability by using the 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile/indium zinc oxide top electrode and bis(2-phenylpyridine)iridium(III) acetylacetonate as the emitter in an exciplex forming co-host system. The device shows a high external quantum efficiency of 23.4% at 1000?cd/m{sup 2} corresponding to a current efficiency of 110?cd/A, low efficiency roll-off with 21% at 10?000?cd/m{sup 2} and low turn on voltage of 2.4?V. Especially, the device showed very small color change with the variation of ?x?=?0.02, ?y?=?0.02 in the CIE 1931 coordinates as the viewing angle changes from 0 to 60. The performance of the device is superior to that of the metal/metal cavity structured device.

  1. A retrospective investigation of energy efficiency standards: Policies may have accelerated long term declines in appliance costs

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Van Buskirk, R. D.; Kantner, C. L. S.; Gerke, B. F.; Chu, S.

    2014-11-14

    We perform a retrospective investigation of multi-decade trends in price and life-cycle cost (LCC) for home appliances in periods with and without energy efficiency (EE) standards and labeling polices. In contrast to the classical picture of the impact of efficiency standards, the introduction and updating of appliance standards is not associated with a long-term increase in purchase price; rather, quality-adjusted prices undergo a continued or accelerated long-term decline. In addition, long term trends in appliance LCCswhich include operating costsconsistently show an accelerated long term decline with EE policies. We also show that the incremental price of efficiency improvements has declinedmorefaster than the baseline product price for selected products. These observations are inconsistent with a view of EE standards that supposes a perfectly competitive market with static supply costs. These results suggest that EE policies may be associated with other forces at play, such as innovation and learning-by-doing in appliance production and design, that can affect long term trends in quality-adjusted prices and LCCs.less

  2. A retrospective investigation of energy efficiency standards: Policies may have accelerated long term declines in appliance costs

    SciTech Connect (OSTI)

    Van Buskirk, R. D.; Kantner, C. L. S.; Gerke, B. F.; Chu, S.

    2014-11-14

    We perform a retrospective investigation of multi-decade trends in price and life-cycle cost (LCC) for home appliances in periods with and without energy efficiency (EE) standards and labeling polices. In contrast to the classical picture of the impact of efficiency standards, the introduction and updating of appliance standards is not associated with a long-term increase in purchase price; rather, quality-adjusted prices undergo a continued or accelerated long-term decline. In addition, long term trends in appliance LCCswhich include operating costsconsistently show an accelerated long term decline with EE policies. We also show that the incremental price of efficiency improvements has declined faster than the baseline product price for selected products. These observations are inconsistent with a view of EE standards that supposes a perfectly competitive market with static supply costs. These results suggest that EE policies may be associated with other forces at play, such as innovation and learning-by-doing in appliance production and design, that can affect long term trends in quality-adjusted prices and LCCs.

  3. High Efficiency Clean Combustion in Multi-Cylinder Light-Duty...

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

    2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review ... Combustion in Multi-Cylinder Light-Duty Engines Gasoline-Like Fuel Effects on Advanced ...

  4. Energy Department Announces Investments to Accelerate U.S. Manufacturing of Energy Efficient Lighting Technologies

    Broader source: Energy.gov [DOE]

    As part of the Obama Administration’s all-of-the-above energy strategy to help reduce energy costs for America’s homes and businesses, the Energy Department announced more than $7 million for three innovative lighting projects

  5. Alliant Energy Interstate Power and Light (Gas)- Business Energy Efficiency Rebate Programs

    Office of Energy Efficiency and Renewable Energy (EERE)

    Interstate Power and Light (IPL) offers a wide variety of incentives for commercial customers to save energy in eligible facilities, whether they are upgrading existing facilities or building new...

  6. Alliant Energy Interstate Power and Light (Gas and Electric)- Low Interest Energy Efficiency Loan Program

    Broader source: Energy.gov [DOE]

    Interstate Power and Light (Alliant Energy), in conjunction with Wells Fargo Bank, offers a low-interest loan for residential, commercial and agricultural customers who purchase and install energy...

  7. Alliant Energy Interstate Power and Light (Electric)- Business Energy Efficiency Rebate Programs

    Broader source: Energy.gov [DOE]

    Interstate Power and Light (IPL) offers a wide variety of incentives for commercial customers to save energy in eligible facilities, whether they are upgrading existing facilities or building new...

  8. Chapter 21: Residential Lighting Evaluation Protocol. Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures

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

    1: Residential Lighting Evaluation Protocol The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures Created as part of subcontract with period of performance September 2011 - December 2014 This supersedes the version originally published in April 2013. Scott Dimetrosky, Katie Parkinson, and Noah Lieb Apex Analytics, LLC Boulder, Colorado NREL Technical Monitor: Charles Kurnik Subcontract Report NREL/SR-7A40-63205 February 2015 NREL is a national

  9. Buildings Energy Data Book: 7.5 Efficiency Standards for Residential...

    Buildings Energy Data Book [EERE]

    Residential Room Air Conditioners (1) Note(s): Source(s): 20,000+ 8.5 20,000+ 8.5 1) Effective for products manufactured on or after October 1, 2000. 2) EER Energy Efficiency ...

  10. Salazar, Chu to Flip Switch on Energy-Efficient LED Lights on...

    Energy Savers [EERE]

    "Using energy efficient LED lightbulbs is an important way Americans can save money by saving energy," said Energy Secretary Steven Chu. "Investing in an American economy that is ...

  11. Novel Approaches to High-Efficiency III-V Nitride Heterostructure Emitters for Next-Generation Lighting Applications

    SciTech Connect (OSTI)

    Russell D. Dupuis

    2004-09-30

    We report research activities and technical progress on the development of high-efficiency long wavelength ({lambda} {approx} 540nm) green light emitting diodes which covers the first year of the three-year program ''Novel approaches to high-efficiency III-V nitride heterostructure emitters for next-generation lighting applications''. The first year activities were focused on the installation, set-up, and use of advanced equipment for the metalorganic chemical vapor deposition growth of III-nitride films and the characterization of these materials (Task 1) and the design, fabrication, testing of nitride LEDs (Task 4). As a progress highlight, we obtained improved quality of {approx} 2 {micro}m-thick GaN layers (as measured by the full width at half maximum of the asymmetric (102) X-ray diffraction peak of less than 350 arc-s) and higher p-GaN:Mg doping level (free hole carrier higher than 1E18 cm{sup -3}). Also in this year, we have developed the growth of InGaN/GaN active layers for long-wavelength green light emitting diodes, specifically, for emission at {lambda} {approx} 540nm. The effect of the Column III precursor (for Ga) and the post-growth thermal annealing effect were also studied. Our LED device fabrication process was developed and initially optimized, especially for low-resistance ohmic contacts for p-GaN:Mg layers, and blue-green light emitting diode structures were processed and characterized.

  12. Investigating potential light-duty efficiency improvements through simulation of turbo-compounding and waste-heat recovery systems

    SciTech Connect (OSTI)

    Edwards, Kevin Dean; Wagner, Robert M; Briggs, Thomas E

    2010-01-01

    Modern diesel engines used in light-duty transportation applications have peak brake thermal efficiencies in the range of 40-42% for high-load operation with substantially lower efficiencies at realistic road-load conditions. Thermodynamic energy and exergy analysis reveals that the largest losses from these engines are due to combustion irreversibility and heat loss to the coolant, through the exhaust, and by direct convection and radiation to the environment. Substantial improvement in overall engine efficiency requires reducing or recovering these losses. Unfortunately, much of the heat transfer either occurs at relatively low temperatures resulting in large entropy generation (such as in the air-charge cooler), is transferred to low-exergy flow streams (such as the oil and engine coolant), or is radiated or convected directly to the environment. While there are significant opportunities for recovery from the exhaust and EGR cooler for heavy-duty applications, achieving similar benefits for light-duty applications is complicated by transient, low-load operation at typical driving conditions and competition with the turbocharger and aftertreatment system for the limited thermal resources. We have developed an organic Rankine cycle model using GT-Suite to investigate the potential for efficiency improvement through waste-heat recovery from the exhaust and EGR cooler of a light-duty diesel engine. The model is used to examine the effects of efficiency-improvement strategies such as cylinder deactivation, use of advanced materials and improved insulation to limit ambient heat loss, and turbo-compounding on the steady-state performance of the ORC system and the availability of thermal energy for downstream aftertreatment systems. Results from transient drive-cycle simulations are also presented, and we discuss strategies to address operational difficulties associated with transient drive cycles and balancing the thermal requirements of waste-heat recovery

  13. High efficiency single Ag nanowire/p-GaN substrate Schottky junction-based ultraviolet light emitting diodes

    SciTech Connect (OSTI)

    Wu, Y.; Li, X.; Xu, P.; Wang, Y.; Shen, X.; Liu, X.; Yang, Q.; Hasan, T.

    2015-02-02

    We report a high efficiency single Ag nanowire (NW)/p-GaN substrate Schottky junction-based ultraviolet light emitting diode (UV-LED). The device demonstrates deep UV free exciton electroluminescence at 362.5?nm. The dominant emission, detectable at ultralow (<1??A) forward current, does not exhibit any shifts when the forward current is increased. External quantum efficiency (EQE) as high as 0.9% is achieved at 25??A current at room temperature. Experiments and simulation analysis show that devices fabricated with thinner Ag NWs have higher EQE. However, for very thin Ag NWs (diameter?efficiency Schottky junction-based UV-LEDs.

  14. Thermal testing of the proposed HUD energy efficiency standard for new manufactured homes

    SciTech Connect (OSTI)

    Judkoff, R.D.; Barker, G.M.

    1992-06-01

    Thermal testing of two manufactured homes was performed at the National Renewable Energy Laboratory's (NREL's) Collaborative Manufactured Buildings Facility for Energy Research and Testing (CMFERT) environmental enclosure in the winter and spring of 1991. The primary objective of the study was to directly measure the thermal performance of the two homes, each built according to a proposed new US Department of Housing and Urban Development (HUD) standard. Secondary objectives were to test the accuracy of an accompanying compliance calculation method and to help manufacturers find cost-effective ways to meet the new standard. Both homes performed within the standard without major design or production line modifications. Their performance fell within 8% of predictions based on the new draft HUD calculation manual; however, models with minimum window area were selected by the manufacturer. Models with more typical window area would have required substantive design changes to meet the standard. Several other tests were also performed on the homes by both NREL and the Florida Solar Energy Center (FSEC) to uncover potential thermal anomalies and to explore the degradation in thermal performance that might occur because of (a) penetrations in the rodent barrier from field hookups and repairs, (b) closing of interior doors with and without operation of the furnace blower, and (c) exposure to winds.

  15. Thermal testing of the proposed HUD energy efficiency standard for new manufactured homes

    SciTech Connect (OSTI)

    Judkoff, R.D.; Barker, G.M.

    1992-06-01

    Thermal testing of two manufactured homes was performed at the National Renewable Energy Laboratory`s (NREL`s) Collaborative Manufactured Buildings Facility for Energy Research and Testing (CMFERT) environmental enclosure in the winter and spring of 1991. The primary objective of the study was to directly measure the thermal performance of the two homes, each built according to a proposed new US Department of Housing and Urban Development (HUD) standard. Secondary objectives were to test the accuracy of an accompanying compliance calculation method and to help manufacturers find cost-effective ways to meet the new standard. Both homes performed within the standard without major design or production line modifications. Their performance fell within 8% of predictions based on the new draft HUD calculation manual; however, models with minimum window area were selected by the manufacturer. Models with more typical window area would have required substantive design changes to meet the standard. Several other tests were also performed on the homes by both NREL and the Florida Solar Energy Center (FSEC) to uncover potential thermal anomalies and to explore the degradation in thermal performance that might occur because of (a) penetrations in the rodent barrier from field hookups and repairs, (b) closing of interior doors with and without operation of the furnace blower, and (c) exposure to winds.

  16. Overcoming Codes and Standards Barriers to Innovations in Building Energy Efficiency

    SciTech Connect (OSTI)

    Cole, Pamala C.; Gilbride, Theresa L.

    2015-02-15

    In this journal article, the authors discuss approaches to overcoming building code barriers to energy-efficiency innovations in home construction. Building codes have been a highly motivational force for increasing the energy efficiency of new homes in the United States in recent years. But as quickly as the codes seem to be changing, new products are coming to the market at an even more rapid pace, sometimes offering approaches and construction techniques unthought of when the current code was first proposed, which might have been several years before its adoption by various jurisdictions. Due to this delay, the codes themselves can become barriers to innovations that might otherwise be helping to further increase the efficiency, comfort, health or durability of new homes. . The U.S. Department of Energy’s Building America, a program dedicated to improving the energy efficiency of America’s housing stock through research and education, is working with the U.S. housing industry through its research teams to help builders identify and remove code barriers to innovation in the home construction industry. The article addresses several approaches that builders use to achieve approval for innovative building techniques when code barriers appear to exist.

  17. DOE Investment Yields R&D 100 Award Winner in Energy-Efficient Lighting

    Broader source: Energy.gov [DOE]

    RTI International's nanofiber lighting improvement technology (NLITe™) has been honored with a 2011 R&D 100 Award. Established in 1963 by the editors of R&D Magazine, the annual R&D 100 Awards identify the 100 most significant, newly introduced research and development advances of the past year in multiple disciplines.

  18. Solvothermal synthesis of designed nonstoichiometric strontium titanate for efficient visible-light photocatalysis

    SciTech Connect (OSTI)

    Sulaeman, Uyi; Yin, Shu; Sato, Tsugio [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan)

    2010-09-06

    SrTiO{sub 3} powders with various Sr/Ti atomic ratios were synthesized by microwave-assisted solvothermal reactions of SrCl{sub 2} and Ti(OC{sub 3}H{sub 7}){sub 4} in KOH aqueous solutions. The nanoparticles of perovskite type SrTiO{sub 3} structure with the particle size of 30-40 nm were synthesized. The photocatalytic activity was determined by deNO{sub x} ability using light emitting diode lamps of various wavelengths such as 627 nm (red), 530 nm (green), 445 nm (blue), and 390 nm (UV). The photocatalytic activity significantly changed depending on the Sr/Ti atomic ratio, i.e., the strontium rich sample (Sr/Ti atomic ratio>1) showed excellent visible light responsive photocatalytic activity for the oxidative destruction of NO.

  19. Enhanced internal quantum efficiency and light extraction efficiency from textured GaN/AlGaN quantum wells grown by molecular beam epitaxy

    SciTech Connect (OSTI)

    Cabalu, J.S.; Thomidis, C.; Moustakas, T.D.; Riyopoulos, S.; Zhou Lin; Smith, David J.

    2006-03-15

    GaN/Al{sub 0.2}Ga{sub 0.8}N multiple quantum wells (MQWs) were grown by molecular beam epitaxy on randomly textured and atomically smooth (0001) GaN templates. Smooth and textured GaN templates were deposited on (0001) sapphire substrates by varying the III/V ratio and the substrate temperature during growth by the hydride vapor-phase epitaxy method. We find that the MQWs replicate the texture of the GaN template, which was found to have a Gaussian distribution. The peak photoluminescence intensity from the textured MQWs is always higher than from the smooth MQWs and for GaN (7 nm)/Al{sub 0.2}Ga{sub 0.8}N (8 nm) MQWs, it is 700 times higher than that from similarly produced MQWs on smooth GaN templates. This result is attributed partly to the enhancement in light extraction efficiency and partly to the enhancement in internal quantum efficiency. The origin of the increase in internal quantum efficiency is partly due to the reduction of the quantum-confined Stark effect, since the polarization vector intersects the quantum well (QW) planes at angles smaller than 90 deg. , and partly due to the charge redistribution in the QWs caused by the polarization component parallel to the planes of the QWs.

  20. Potential for Energy Efficiency Improvement Beyond the Light-Duty Sector

    Broader source: Energy.gov [DOE]

    While there has been considerable research focusing on energy efficiency and fuel substitution options for LDVs, much less attention has been given to non-LDV modes, even though they constitute close to half of the energy used in the transportation sector. We conducted an extensive literature review of the non-LDV modes, and in this report we bring together the salient findings concerning future energy efficiency options in the time period up to 2050. The studies reviewed provided potential energy savings for individual technologies within each mode, as well as an overall energy savings representing the case where all possible improvements are implemented.

  1. The Second US-China Energy Efficiency Forum: Energy Management Standards

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

    Department of Energy heavy-duty vehicle market, alternatives to internal combustion engines, and pathways to increasing diesel engine efficiency deer11_greszler.pdf (1.6 MB) More Documents & Publications High Fuel Economy Heavy-Duty Truck Engine View from the Bridge: Commercial Vehicle Perspective Diesel Engine Alternatives

    And as I looked and wept, I saw that there stood on the north side of the starving camp a sacred man who was painted red all over his body, and he held a spear as

  2. Temperature-dependent efficiency droop of blue InGaN micro-light emitting diodes

    SciTech Connect (OSTI)

    Tian, Pengfei; McKendry, Jonathan J. D.; Herrnsdorf, Johannes; Ferreira, Ricardo; Watson, Ian M.; Gu, Erdan Dawson, Martin D.; Watson, Scott; Kelly, Anthony E.

    2014-10-27

    Temperature-dependent trends in radiative and Auger recombination coefficients have been determined at different injection carrier concentrations using InGaN micro-light emitting diodes 40 ?m in diameter. The differential lifetime was obtained first from the measured modulation bandwidth and was then employed to calculate the carrier concentration in the quantum well active region. When the temperature increases, the carrier concentration increases, but both the radiative and Auger recombination coefficients decrease. In addition, the temperature dependence of radiative and Auger recombination coefficients is weaker at a higher injection carrier concentration, which is strongly related to phase space filling.

  3. Frequently Asked Questions: Lighting Choices to Save You Money | Department

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

    of Energy Frequently Asked Questions: Lighting Choices to Save You Money Frequently Asked Questions: Lighting Choices to Save You Money Frequently Asked Questions: Lighting Choices to Save You Money Below are some of the most frequently asked questions and answers about the new lighting efficiency standards. Learn more about your lighting choices and find out how to shop for lights by lumens, not watts. Why are my lighting choices changing? What is the Energy Independence and Security Act of

  4. Fe ion-implanted TiO{sub 2} thin film for efficient visible-light photocatalysis

    SciTech Connect (OSTI)

    Impellizzeri, G. Scuderi, V.; Sanz, R.; Privitera, V.; Romano, L.; Sberna, P. M.; Arcadipane, E.; Scuderi, M.; Nicotra, G.; Bayle, M.; Carles, R.; Simone, F.

    2014-11-07

    This work shows the application of metal ion-implantation to realize an efficient second-generation TiO{sub 2} photocatalyst. High fluence Fe{sup +} ions were implanted into thin TiO{sub 2} films and subsequently annealed up to 550?C. The ion-implantation process modified the TiO{sub 2} pure film, locally lowering its band-gap energy from 3.2?eV to 1.61.9?eV, making the material sensitive to visible light. The measured optical band-gap of 1.61.9?eV was associated with the presence of effective energy levels in the energy band structure of the titanium dioxide, due to implantation-induced defects. An accurate structural characterization was performed by Rutherford backscattering spectrometry, transmission electron microscopy, Raman spectroscopy, X-ray diffraction, and UV/VIS spectroscopy. The synthesized materials revealed a remarkable photocatalytic efficiency in the degradation of organic compounds in water under visible light irradiation, without the help of any thermal treatments. The photocatalytic activity has been correlated with the amount of defects induced by the ion-implantation process, clarifying the operative physical mechanism. These results can be fruitfully applied for environmental applications of TiO{sub 2}.

  5. LED Lighting Facts | Department of Energy

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

    Research & Development » Technology Application R&D » LED Lighting Facts LED Lighting Facts LED lighting facts - A Program of the U.S. DOE DOE's LED Lighting Facts® program showcases LED products for general illumination from manufacturers who commit to testing products and reporting performance results according to industry standards. For lighting buyers, designers, and energy efficiency programs, the program provides information essential to evaluating SSL products. Central to the

  6. LED Lighting Facts | Department of Energy

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

    Research & Development » Technology Application R&D » LED Lighting Facts LED Lighting Facts LED lighting facts - A Program of the U.S. DOE DOE's LED Lighting Facts® program showcases LED products for general illumination from manufacturers who commit to testing products and reporting performance results according to industry standards. For lighting buyers, designers, and energy efficiency programs, the program provides information essential to evaluating SSL products. Central to the

  7. Science-based design of stable quantum dots for energy-efficient lighting

    SciTech Connect (OSTI)

    Martin, James E.; Rohwer, Lauren E. S.; van Swol, Frank B.; Zhou, Xiaowang; Lu, Ping

    2015-09-01

    II-VI quantum dots, such as CdSe and CdTe, are attractive as downconversion materials for solid-state lighting, because of their narrow linewidth, tunable emission. However, for these materials to have acceptable quantum yields (QYs) requires that they be coated with a II-VI shell material whose valence band offset serves to confine the hole to the core. Confinement prevents the hole from accessing surface traps that lead to nonradiative decay of the exciton. Examples of such hole-confined core/shell QDs include CdTe/CdSe and CdSe/CdS. Unfortunately, the shell can also cause problems due to lattice mismatch, which ranges from 4-6% for systems of interest. This lattice mismatch can create significant interface energies at the heterojunction and places the core under radial compression and the shell under tangential tension. At elevated temperatures (~240°C) interfacial diffusion can relax these stresses, as can surface reconstruction, which can expose the core, creating hole traps. But such high temperatures favor the hexagonal Wurtzite structure, which has lower QY than the cubic zinc blende structure, which can be synthesized at lower temperatures, ~140°C. In the absence of alloying the core/shell structure can become metastable, or even unstable, if the shell is too thick. This can cause result in an irregular shell or even island growth. But if the shell is too thin thermallyactivated transport of the hole to surface traps can occur. In our LDRD we have developed a fundamental atomistic modeling capability, based on Stillinger-Weber and Bond-Order potentials we developed for the entire II-VI class. These pseudo-potentials have enabled us to conduct large-scale atomistic simulations that have led to the computation of phase diagrams of II-VI QDs. These phase diagrams demonstrate that at elevated temperatures the zinc blende phase of CdTe with CdSe grown on it epitaxially becomes thermodynamically unstable due to alloying. This is accompanied by a loss of hole

  8. Recommended Changes to Specifications for Demand Controlled Ventilation in California's Title 24 Building Energy Efficiency Standards

    SciTech Connect (OSTI)

    Fisk, William J.; Sullivan, Douglas P.; Faulkner, David

    2010-04-08

    In demand-controlled ventilation (DCV), rates of outdoor air ventilation are automatically modulated as occupant density varies. The objective is to keep ventilation rates at or above design specifications and code requirements and also to save energy by avoiding excessive ventilation rates. DCV is most often used in spaces with highly variable and sometime dense occupancy. In almost all cases, carbon dioxide (CO{sub 2}) sensors installed in buildings provide the signal to the ventilation rate control system. People produce and exhale CO{sub 2} as a consequence of their normal metabolic processes; thus, the concentrations of CO{sub 2} inside occupied buildings are higher than the concentrations of CO{sub 2} in the outdoor air. The magnitude of the indoor-outdoor CO{sub 2} concentration difference decreases as the building's ventilation rate per person increases. The difference between the indoor and outdoor CO{sub 2} concentration is also a proxy for the indoor concentrations of other occupant-generated bioeffluents, such as body odors. Reviews of the research literature on DCV indicate a significant potential for energy savings, particularly in buildings or spaces with a high and variable occupancy. Based on modeling, cooling energy savings from applications of DCV are as high as 20%. With support from the California Energy Commission and the U.S. Department of Energy, the Lawrence Berkeley National Laboratory has performed research on the performance of CO{sub 2} sensing technologies and optical people counters for DCV. In addition, modeling was performed to evaluate the potential energy savings and cost effectiveness of using DCV in general office spaces within the range of California climates. The above-described research has implications for the specifications pertaining to DCV in section 121 of the California Title 24 Standard. Consequently, this document suggests possible changes in these specifications based on the research findings. The suggested changes

  9. Improved energy efficiency by use of the new ultraviolet light radiation paint curing process

    SciTech Connect (OSTI)

    Grosset, A.M.; Su, W.-F.A.

    1984-08-01

    In product finishing lines, ultraviolet radiation curing of paints on prefabricated structures is more energy efficient than curing by natural gas fired ovens, and could eliminate solvent emission. The replacement of a conventional natural gas fired oven by an ultraviolet radiation curing line for paint curing could save quadrillions of joules per year for each finishing line. In this program sponsored by the U.S. Department of Energy, Office of Industrial Programs, two photoinduced polymerizations, via free radical or cationic mechanisms, were considered in the formulation of UV curable paints. The spectral output of radiation sources was chosen so as to complement the absorption spectra of pigments and photoactive agents; thus highly pigmented thick films could be cured fully by UV radiation. One coat enamels, topcoats, and primers have been developed which can be applied on three dimensional objects by spraying and can be cured by passing through a tunnel containing UV lamps.

  10. Efficient carrier relaxation and fast carrier recombination of N-polar InGaN/GaN light emitting diodes

    SciTech Connect (OSTI)

    Feng, Shih-Wei Liao, Po-Hsun; Leung, Benjamin; Han, Jung; Yang, Fann-Wei; Wang, Hsiang-Chen

    2015-07-28

    Based on quantum efficiency and time-resolved electroluminescence measurements, the effects of carrier localization and quantum-confined Stark effect (QCSE) on carrier transport and recombination dynamics of Ga- and N-polar InGaN/GaN light-emitting diodes (LEDs) are reported. The N-polar LED exhibits shorter ns-scale response, rising, delay, and recombination times than the Ga-polar one does. Stronger carrier localization and the combined effects of suppressed QCSE and electric field and lower potential barrier acting upon the forward bias in an N-polar LED provide the advantages of more efficient carrier relaxation and faster carrier recombination. By optimizing growth conditions to enhance the radiative recombination, the advantages of more efficient carrier relaxation and faster carrier recombination in a competitive performance N-polar LED can be realized for applications of high-speed flash LEDs. The research results provide important information for carrier transport and recombination dynamics of an N-polar InGaN/GaN LED.

  11. Nitride based quantum well light-emitting devices having improved current injection efficiency

    DOE Patents [OSTI]

    Tansu, Nelson; Zhao, Hongping; Liu, Guangyu; Arif, Ronald

    2014-12-09

    A III-nitride based device provides improved current injection efficiency by reducing thermionic carrier escape at high current density. The device includes a quantum well active layer and a pair of multi-layer barrier layers arranged symmetrically about the active layer. Each multi-layer barrier layer includes an inner layer abutting the active layer; and an outer layer abutting the inner layer. The inner barrier layer has a bandgap greater than that of the outer barrier layer. Both the inner and the outer barrier layer have bandgaps greater than that of the active layer. InGaN may be employed in the active layer, AlInN, AlInGaN or AlGaN may be employed in the inner barrier layer, and GaN may be employed in the outer barrier layer. Preferably, the inner layer is thin relative to the other layers. In one embodiment the inner barrier and active layers are 15 .ANG. and 24 .ANG. thick, respectively.

  12. Optimizing laser produced plasmas for efficient extreme ultraviolet and soft X-ray light sources

    SciTech Connect (OSTI)

    Sizyuk, Tatyana; Hassanein, Ahmed [Center for Materials under Extreme Environment, School of Nuclear Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)

    2014-08-15

    Photon sources produced by laser beams with moderate laser intensities, up to 10{sup 14?}W/cm{sup 2}, are being developed for many industrial applications. The performance requirements for high volume manufacture devices necessitate extensive experimental research supported by theoretical plasma analysis and modeling predictions. We simulated laser produced plasma sources currently being developed for several applications such as extreme ultraviolet lithography using 13.5%??1% nm bandwidth, possibly beyond extreme ultraviolet lithography using 6. nm wavelengths, and water-window microscopy utilizing 2.48?nm (La-?) and 2.88?nm (He-?) emission. We comprehensively modeled plasma evolution from solid/liquid tin, gadolinium, and nitrogen targets as three promising materials for the above described sources, respectively. Results of our analysis for plasma characteristics during the entire course of plasma evolution showed the dependence of source conversion efficiency (CE), i.e., laser energy to photons at the desired wavelength, on plasma electron density gradient. Our results showed that utilizing laser intensities which produce hotter plasma than the optimum emission temperatures allows increasing CE for all considered sources that, however, restricted by the reabsorption processes around the main emission region and this restriction is especially actual for the 6.?nm sources.

  13. Efficiency

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

    Efficiency of High Order Spectral Element Methods on Petascale Architectures Maxwell Hutchinson 1 , Alexander Heinecke 2 , Hans Pabst 3 , Greg Henry 4 , Matteo Parsani 5 , and David Keyes 5 1 Department of Physics, University of Chicago, Chicago IL, USA 2 Intel Corporation, Santa Clara CA, USA 3 Intel Semiconductor AG, Zurich, Switzerland 4 Intel Corporation, Hillsboro OR, USA 5 Extreme Computing Research Center, KAUST, Thuwal, 23955, KSA Abstract. High order methods for the solution of PDEs

  14. 2014-09-16 Issuance: Energy Efficiency Program for Consumer Products: Energy Conservation Standards for Ceiling Fans: Public Meeting and Availability of the Preliminary Technical Support Document

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document is a pre-publication Federal Register Energy Efficiency Program for Consumer Products: Energy Conservation Standards for Ceiling Fans: Public Meeting and Availability of the Preliminary Technical Support Document.

  15. Feebates and Fuel Economy Standards: Impacts on Fuel Use in Light-Duty Vehicles and Greenhouse Gas Emissions

    SciTech Connect (OSTI)

    Greene, David L

    2011-01-01

    This study evaluates the potential impacts of a national feebate system, a market-based policy that consists of graduated fees on low-fuel-economy (or high-emitting) vehicles and rebates for high-fuel-economy (or lowemitting) vehicles. In their simplest form, feebate systems operate under three conditions: a benchmark divides all vehicles into two categories-those charged fees and those eligible for rebates; the sizes of the fees and rebates are a function of a vehicle's deviation from its benchmark; and placement of the benchmark ensures revenue neutrality or a desired level of subsidy or revenue. A model developed by the University of California for the California Air Resources Board was revised and used to estimate the effects of six feebate structures on fuel economy and sales of new light-duty vehicles, given existing and anticipated future fuel economy and emission standards. These estimates for new vehicles were then entered into a vehicle stock model that simulated the evolution of the entire vehicle stock. The results indicate that feebates could produce large, additional reductions in emissions and fuel consumption, in large part by encouraging market acceptance of technologies with advanced fuel economy, such as hybrid electric vehicles.

  16. Final report on grand challenge LDRD project : a revolution in lighting : building the science and technology base for ultra-efficient solid-state lighting.

    SciTech Connect (OSTI)

    Copeland, Robert Guild; Mitchell, Christine Charlotte; Follstaedt, David Martin; Lee, Stephen Roger; Shul, Randy John; Fischer, Arthur Joseph; Chow, Weng Wah Dr.; Myers, Samuel Maxwell, Jr.; Thoma, Steven George; Gee, James Martin; Coltrin, Michael Elliott; Burdick, Brent A.; Salamone, Angelo, L., Jr.; Hadley, G. Ronald; Elliott, Russell D.; Campbell, Jonathan M.; Abrams, Billie Lynn; Wendt, Joel Robert; Pawlowski, Roger Patrick; Simpson, Regina Lynn; Kurtz, Steven Ross; Cole, Phillip James; Fullmer, Kristine Wanta; Seager, Carleton Hoover; Bogart, Katherine Huderle Andersen; Biefeld, Robert Malcolm; Kerley, Thomas M.; Norman, Adam K.; Tallant, David Robert; Woessner, Stephen Matthew; Figiel, Jeffrey James; Moffat, Harry K.; Provencio, Paula Polyak; Emerson, John Allen; Kaplar, Robert James; Wilcoxon, Jess Patrick; Waldrip, Karen Elizabeth; Rohwer, Lauren Elizabeth Shea; Cross, Karen Charlene; Wright, Alan Francis; Gonzales, Rene Marie; Salinger, Andrew Gerhard; Crawford, Mary Hagerott; Garcia, Marie L.; Allen, Mark S.; Southwell, Edwin T.; Bauer, Tom M.; Monson, Mary Ann; Tsao, Jeffrey Yeenien; Creighton, James Randall; Allerman, Andrew Alan; Simmons, Jerry A.; Boyack, Kevin W.; Jones, Eric Daniel; Moran, Michael P.; Pinzon, Marcia J.; Pinson, Ariane O.; Miksovic, Ann E.; Wang, George T.; Ashby, Carol Iris Hill; Missert, Nancy A.; Koleske, Daniel David; Rahal, Nabeel M.

    2004-06-01

    This SAND report is the final report on Sandia's Grand Challenge LDRD Project 27328, 'A Revolution in Lighting -- Building the Science and Technology Base for Ultra-Efficient Solid-state Lighting.' This project, which for brevity we refer to as the SSL GCLDRD, is considered one of Sandia's most successful GCLDRDs. As a result, this report reviews not only technical highlights, but also the genesis of the idea for Solid-state Lighting (SSL), the initiation of the SSL GCLDRD, and the goals, scope, success metrics, and evolution of the SSL GCLDRD over the course of its life. One way in which the SSL GCLDRD was different from other GCLDRDs was that it coincided with a larger effort by the SSL community - primarily industrial companies investing in SSL, but also universities, trade organizations, and other Department of Energy (DOE) national laboratories - to support a national initiative in SSL R&D. Sandia was a major player in publicizing the tremendous energy savings potential of SSL, and in helping to develop, unify and support community consensus for such an initiative. Hence, our activities in this area, discussed in Chapter 6, were substantial: white papers; SSL technology workshops and roadmaps; support for the Optoelectronics Industry Development Association (OIDA), DOE and Senator Bingaman's office; extensive public relations and media activities; and a worldwide SSL community website. Many science and technology advances and breakthroughs were also enabled under this GCLDRD, resulting in: 55 publications; 124 presentations; 10 book chapters and reports; 5 U.S. patent applications including 1 already issued; and 14 patent disclosures not yet applied for. Twenty-six invited talks were given, at prestigious venues such as the American Physical Society Meeting, the Materials Research Society Meeting, the AVS International Symposium, and the Electrochemical Society Meeting. This report contains a summary of these science and technology advances and breakthroughs

  17. Low-cost electrochemical treatment of indium tin oxide anodes for high-efficiency organic light-emitting diodes

    SciTech Connect (OSTI)

    Hui Cheng, Chuan, E-mail: chengchuanhui@dlut.edu.cn; Shan Liang, Ze; Gang Wang, Li; Dong Gao, Guo; Zhou, Ting; Ming Bian, Ji; Min Luo, Ying [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Tong Du, Guo, E-mail: dugt@dlut.edu.cn [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012 (China)

    2014-01-27

    We demonstrate a simple low-cost approach as an alternative to conventional O{sub 2} plasma treatment to modify the surface of indium tin oxide (ITO) anodes for use in organic light-emitting diodes. ITO is functionalized with F{sup ?} ions by electrochemical treatment in dilute hydrofluoric acid. An electrode with a work function of 5.2?eV is achieved following fluorination. Using this electrode, a maximum external quantum efficiency of 26.0% (91?cd/A, 102?lm/W) is obtained, which is 12% higher than that of a device using the O{sub 2} plasma-treated ITO. Fluorination also increases the transparency in the near-infrared region.

  18. Novel Approaches to High-Efficiency III-V Nitride Heterostructure Emitters for Next-Generation Lighting Applications

    SciTech Connect (OSTI)

    Russell D. Dupuis

    2006-01-01

    We report research activities and technical progress on the development of high-efficiency long wavelength ({lambda} {approx} 540nm) green light emitting diodes which covers the second year of the three-year program ''Novel approaches to high-efficiency III-V nitride heterostructure emitters for next-generation lighting applications''. The second year activities were focused on the development of p-type layer that has less/no detrimental thermal annealing effect on green LED active region as well as excellent structural and electrical properties and the development of green LED active region that has superior luminescence quality for {lambda} {approx}540nm green LEDs. We have also studied the thermal annealing effect on blue and green LED active region during the p-type layer growth. As a progress highlight, we obtained green-LED-active-region-friendly In{sub 0.04}Ga{sub 0.96}N:Mg exhibiting low resistivity with higher hole concentration (p=2.0 x 10{sup 18} cm{sup -3} and a low resistivity of 0.5 {Omega}-cm) and improved optical quality green LED active region emitting at {lambda} {approx}540nm by electroluminescence. The active region of the green LEDs was found to be much more sensitive to the thermal annealing effect during the p-type layer growth than that of the blue LEDs. We have designed grown, fabricated green LED structures for both 520 nm and 540 nm for the evaluation of second year green LED development.

  19. Rapid Microwave Preparation of Highly Efficient Ce[superscript 3+]-Substituted Garnet Phosphors for Solid State White Lighting

    SciTech Connect (OSTI)

    Birkel, Alexander; Denault, Kristin A.; George, Nathan C.; Doll, Courtney E.; Hry, Bathylle; Mikhailovsky, Alexander A.; Birkel, Christina S.; Hong, Byung-Chul; Seshadri, Ram (UCSB); (Mitsubishi)

    2012-04-30

    Ce{sup 3+}-substituted aluminum garnet compounds of yttrium (Y{sub 3}Al{sub 5}O{sub 12}) and lutetium (Lu{sub 3}Al{sub 5}O{sub 12}) - both important compounds in the generation of (In,Ga)N-based solid state white lighting - have been prepared using a simple microwave heating technique involving the use of a microwave susceptor to provide the initial heat source. Carbon used as the susceptor additionally creates a reducing atmosphere around the sample that helps stabilize the desired luminescent compound. High quality, phase-pure materials are prepared within a fraction of the time and using a fraction of the energy required in a conventional ceramic preparation; the microwave technique allows for a reduction of about 95% in preparation time, making it possible to obtain phase pure, Ce{sup 3+}-substituted garnet compounds in under 20 min of reaction time. It is estimated that the overall reduction in energy compared with ceramic routes as practiced in the lab is close to 99%. Conventionally prepared material is compared with material prepared using microwave heating in terms of structure, morphology, and optical properties, including quantum yield and thermal quenching of luminescence. Finally, the microwave-prepared compounds have been incorporated into light-emitting diode 'caps' to test their performance characteristics in a real device, in terms of their photon efficiency and color coordinates.

  20. EA-2001: Energy Efficiency Design Standards: New Federal Commercial and Multi-Family High-Rise Residential Buildings and New Federal Low-Rise Residential Buildings

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) is publishing this final rule to implement provisions in the Energy Conservation and Production Act (ECPA) that require DOE to update the baseline Federal energy efficiency performance standards for the construction of new Federal commercial and multi-family high-rise residential buildings. This rule updates the baseline Federal commercial standard to the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) Standard 90.1-2013.

  1. Electric Efficiency Standard

    Broader source: Energy.gov [DOE]

    In December 2009, the Indiana Utility Regulatory Commission's (IURC) ordered utilities to establish demand-side management (DSM) electric savings goals leading to 2.0% reduction of electricity sa...

  2. Energy Efficiency Resource Standards

    Broader source: Energy.gov [DOE]

    In July 2009 the Delaware legislature enacted legislation creating energy savings targets for Delaware’s investor-owned, municipal, and cooperative electric utilities, as well the state’s natural...

  3. Energy Efficiency Resource Standard

    Broader source: Energy.gov [DOE]

    In 2007, the Minnesota legislature passed the Next Generation Energy Act (NGEA), which requires both electric and natural gas investor-owned utilities to reduce energy sales, and spend a minimum ...

  4. Energy Efficiency Resource Standard

    Broader source: Energy.gov [DOE]

    The Colorado legislature enacted H.B. 1037 in 2007, requiring electricity and natural gas investor-owned utilities (IOUs) to engage in demand response and adopt demand-side management (DSM)...

  5. Suppression of external quantum efficiency roll-off of nanopatterned organic-light emitting diodes at high current densities

    SciTech Connect (OSTI)

    Kuwae, Hiroyuki; Kasahara, Takashi; Nitta, Atsushi; Yoshida, Kou; Inoue, Munetomo; Matsushima, Toshinori; Adachi, Chihaya; Shoji, Shuichi; Mizuno, Jun

    2015-10-21

    We developed organic light-emitting diodes (OLEDs) with nanopatterned current flow regions using electron-beam lithography with the aim of suppressing singlet–polaron annihilation (SPA). Nanopatterns composed of lines and circles were used in the current flow regions of nano-line and nano-dot OLEDs, respectively. Excitons partially escape from the current flow regions where SPA takes place. As such, current densities where external quantum efficiencies were half of their initial values (J{sub 0}) increased as line width and circle diameter were decreased to close to the exciton diffusion length. Circles were more efficient at enhancing exciton escape and increasing J{sub 0} than lines. The J{sub 0} increase in the nano-dot OLEDs containing nanopatterned circles with a diameter of 50 nm was approximately 41-fold that of a conventional OLED with a current flow region of 4 mm{sup 2}. The dependence of J{sub 0} on the size and shape of the nanopatterns was well explained by an SPA model that considered exciton diffusion. Nanopatterning of OLEDs is a feasible method of obtaining large J{sub 0}.

  6. Drive cycle simulation of high efficiency combustions on fuel economy and exhaust properties in light-duty vehicles

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Gao, Zhiming; Curran, Scott J.; Parks, James E.; Smith, David E.; Wagner, Robert M.; Daw, C. Stuart; Edwards, K. Dean; Thomas, John F.

    2015-04-06

    We present fuel economy and engine-out emissions for light-duty (LD) conventional and hybrid vehicles powered by conventional and high-efficiency combustion engines. Engine technologies include port fuel-injected (PFI), direct gasoline injection (GDI), reactivity controlled compression ignition (RCCI) and conventional diesel combustion (CDC). In the case of RCCI, the engine utilized CDC combustion at speed/load points not feasible with RCCI. The results, without emissions considered, show that the best fuel economies can be achieved with CDC/RCCI, with CDC/RCCI, CDC-only, and lean GDI all surpassing PFI fuel economy significantly. In all cases, hybridization significantly improved fuel economy. The engine-out hydrocarbon (HC), carbon monoxidemore » (CO), nitrogen oxides (NOx), and particulate matter (PM) emissions varied remarkably with combustion mode. The simulated engine-out CO and HC emissions from RCCI are significantly higher than CDC, but RCCI makes less NOx and PM emissions. Hybridization can improve lean GDI and RCCI cases by increasing time percentage for these more fuel efficient modes. Moreover, hybridization can dramatically decreases the lean GDI and RCCI engine out emissions. Importantly, lean GDI and RCCI combustion modes decrease exhaust temperatures, especially for RCCI, which limits aftertreatment performance to control tailpipe emissions. Overall, the combination of engine and hybrid drivetrain selected greatly affects the emissions challenges required to meet emission regulations.« less

  7. Drive cycle simulation of high efficiency combustions on fuel economy and exhaust properties in light-duty vehicles

    SciTech Connect (OSTI)

    Gao, Zhiming; Curran, Scott J.; Parks, James E.; Smith, David E.; Wagner, Robert M.; Daw, C. Stuart; Edwards, K. Dean; Thomas, John F.

    2015-04-06

    We present fuel economy and engine-out emissions for light-duty (LD) conventional and hybrid vehicles powered by conventional and high-efficiency combustion engines. Engine technologies include port fuel-injected (PFI), direct gasoline injection (GDI), reactivity controlled compression ignition (RCCI) and conventional diesel combustion (CDC). In the case of RCCI, the engine utilized CDC combustion at speed/load points not feasible with RCCI. The results, without emissions considered, show that the best fuel economies can be achieved with CDC/RCCI, with CDC/RCCI, CDC-only, and lean GDI all surpassing PFI fuel economy significantly. In all cases, hybridization significantly improved fuel economy. The engine-out hydrocarbon (HC), carbon monoxide (CO), nitrogen oxides (NOx), and particulate matter (PM) emissions varied remarkably with combustion mode. The simulated engine-out CO and HC emissions from RCCI are significantly higher than CDC, but RCCI makes less NOx and PM emissions. Hybridization can improve lean GDI and RCCI cases by increasing time percentage for these more fuel efficient modes. Moreover, hybridization can dramatically decreases the lean GDI and RCCI engine out emissions. Importantly, lean GDI and RCCI combustion modes decrease exhaust temperatures, especially for RCCI, which limits aftertreatment performance to control tailpipe emissions. Overall, the combination of engine and hybrid drivetrain selected greatly affects the emissions challenges required to meet emission regulations.

  8. Mixed-Source EGR for Enabling High Efficiency Clean Combustion Modes in a Light-Duty Diesel Engine

    SciTech Connect (OSTI)

    Cho, Kukwon; Han, Manbae; Wagner, Robert M; Sluder, Scott

    2008-01-01

    The source of exhaust gas recirculation (EGR), and consequently composition and temperature, has a significant effect on advanced combustion modes including stability, efficiency, and emissions. The effects of high-pressure loop EGR (HPL EGR) and low-pressure loop EGR (LPL EGR) on achieving high efficiency clean combustion (HECC) modes in a light-duty diesel engine were characterized in this study. High dilution operation is complicated in real-world situations due to inadequate control of mixture temperature and the slow response of LPL EGR systems. Mixed-source EGR (combination of HPL EGR and LPL EGR) was investigated as a reasonable approach for controlling mixture temperature. The potential of mixed-source EGR has been explored using LPL EGR as a 'base' for dilution rather than as a sole source. HPL EGR provides the 'trim' for controlling mixture temperature and has the potential for enabling precise control of dilution targets. This approach also has a benefit where LPL EGR does not provide sufficient dilution for achieving conditions appropriate for HECC operation. The balance of the required dilution could be achieved with HPL EGR mitigating the need for throttling or a LPL EGR pump. The results of this investigation revealed significant differences in engine-out emissions and performance for various EGR sources.

  9. Using interlayer step-wise triplet transfer to achieve an efficient white organic light-emitting diode with high color-stability

    SciTech Connect (OSTI)

    Wang, Qi; Ma, Dongge Ding, Junqiao; Wang, Lixiang; Leo, Karl; Qiao, Qiquan; Jia, Huiping; Gnade, Bruce E.

    2014-05-12

    An efficient phosphorescent white organic light emitting-diode with a red-green-blue tri-emitting-layer structure is reported. The host of the red dopant possesses a lower triplet-energy than the green dye. An interlayer step-wise triplet transfer via blue dye ? green dye ? red host ? red dye is achieved. This mechanism allows an efficient triplet harvesting by the three dopants, thus maintaining a balanced white light and reducing energy loss. Moreover, the color stability of the device is improved significantly. The white device not only achieves a peak external quantum efficiency of 21.1??0.8% and power efficiency of 37.5??1.4?lm/W but shows no color shift over a wide range of voltages.

  10. Chapter 2, Commercial and Industrial Lighting Evaluation Protocol: The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures

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

    2: Commercial and Industrial Lighting Evaluation Protocol The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures Dakers Gowans, Left Fork Energy Subcontract Report NREL/SR-7A30-53827 April 2013 Chapter 2 - Table of Contents 1 Measure Description .............................................................................................................. 2 2 Application Conditions of the Protocol

  11. Chapter 3, Commercial and Industrial Lighting Controls Evaluation Protocol: The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures

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

    3: Commercial and Industrial Lighting Controls Evaluation Protocol Stephen Carlson, DNV KEMA Subcontract Report NREL/SR-7A30-53827 April 2013 The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures 3 - 1 Chapter 3 - Table of Contents 1 Measure Description .............................................................................................................. 2 2 Application Conditions of Protocol

  12. Origin of InGaN/GaN light-emitting diode efficiency improvements using tunnel-junction-cascaded active regions

    SciTech Connect (OSTI)

    Piprek, Joachim

    2014-02-03

    This Letter investigates the efficiency enhancement achieved by tunnel junction insertion into the InGaN/GaN multi-quantum well (MQW) active region of blue light emitting diodes (LEDs). The peak quantum efficiency of such LED exceeds 100%, but the maximum wall-plug efficiency (WPE) hardly changes. However, due to the increased bias, the WPE peaks at much higher input power, i.e., the WPE droop is significantly delayed, and the output power is strongly enhanced. The main physical reason for this improvement lies in the non-uniform vertical carrier distribution typically observed within InGaN MQWs.

  13. Comparison of Test Procedures and Energy Efficiency Criteria in Selected International Standards & Labeling Programs for Copy Machines, External Power Supplies, LED Displays, Residential Gas Cooktops and Televisions

    SciTech Connect (OSTI)

    Zheng, Nina; Zhou, Nan; Fridley, David

    2012-03-01

    This report presents a technical review of international minimum energy performance standards (MEPS), voluntary and mandatory energy efficiency labels and test procedures for five products being considered for new or revised MEPS in China: copy machines, external power supply, LED displays, residential gas cooktops and flat-screen televisions. For each product, an overview of the scope of existing international standards and labeling programs, energy values and energy performance metrics and description and detailed summary table of criteria and procedures in major test standards are presented.

  14. EA-1918: Final Rule, 10 CFR 433, "Energy Efficiency Standards for New Federal Commercial and MultiFamily High-Rise Residential Buildings" RIN 1904-AC60

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of implementing provisions in the Energy Conservation and Production Act (ECPA) that require DOE to update the baseline Federal energy efficiency performance standards for the construction of new Federal buildings, including commercial and multi-family high-rise residential buildings. This EA addresses Federal commercial standard to the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) Standard 90.1-2010. The Final Rule was published in the Federal Register on July 9, 2013, 78 FR 40945.

  15. Investigating the origin of efficiency droop by profiling the temperature across the multi-quantum well of an operating light-emitting diode

    SciTech Connect (OSTI)

    Jung, Euihan; Hwang, Gwangseok; Chung, Jaehun; Kwon, Ohmyoung; Han, Jaecheon; Moon, Yong-Tae; Seong, Tae-Yeon

    2015-01-26

    Performance degradation resulting from efficiency droop during high-power operation is a critical problem in the development of high-efficiency light-emitting diodes (LEDs). In order to resolve the efficiency droop and increase the external quantum efficiency of LEDs, the droop's origin should be identified first. To experimentally investigate the cause of efficiency droop, we used null-point scanning thermal microscopy to quantitatively profile the temperature distribution on the cross section of the epi-layers of an operating GaN-based vertical LED with nanoscale spatial resolution at four different current densities. The movement of temperature peak towards the p-GaN side as the current density increases suggests that more heat is generated by leakage current than by Auger recombination. We therefore suspect that at higher current densities, current leakage becomes the dominant cause of the droop problem.

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

    SciTech Connect (OSTI)

    Letschert, Virginie E.; Bojda, Nicholas; Ke, Jing; McNeil, Michael A.

    2012-07-01

    This study analyzes the financial impacts on consumers of minimum efficiency performance standards (MEPS) for appliances that could be implemented in 13 major economies around the world. We use the Bottom-Up Energy Analysis System (BUENAS), developed at Lawrence Berkeley National Laboratory (LBNL), to analyze various appliance efficiency target levels to estimate the net present value (NPV) of policies designed to provide maximum energy savings while not penalizing consumers financially. These policies constitute what we call the “cost-effective potential” (CEP) scenario. The CEP scenario is designed to answer the question: How high can we raise the efficiency bar in mandatory programs while still saving consumers money?

  17. CALiPER Snapshot Report: Light Bulbs

    SciTech Connect (OSTI)

    2013-10-01

    Snapshot reports use data from DOE's LED Lighting Facts product list to compare the LED performance to standard technologies, and are designed to help lighting retailers, distributors, designers, utilities, energy efficiency program sponsors, and other stakeholders understand the current state of the LED market and its trajectory.

  18. Chapter 21: Residential Lighting Evaluation Protocol

    SciTech Connect (OSTI)

    Dimetrosky, S.; Parkinson, K.; Lieb, N.

    2015-02-01

    In recent years, residential lighting has represented a significant share of ratepayer-funded energy-efficiency electricity savings. Utilities have achieved the majority of these savings by promoting the purchase and installation of compact fluorescent lamps (CFLs), both standard 'twister' bulbs and specialty CFLs such as reflectors, A-Lamps, globes, and dimmable lights.

  19. Improving the Efficiency of Light-Duty Vehicle HVAC Systems using Zonal Thermoelectric Devices and Comfort Modeling

    Office of Energy Efficiency and Renewable Energy (EERE)

    Summarizes results from a study to identify and demonstrate technical and commercial approaches necessary to accelerate the deployment of zonal TE HVAC systems in light-duty vehicles

  20. Influences of wide-angle and multi-beam interference on the chromaticity and efficiency of top-emitting white organic light-emitting diodes

    SciTech Connect (OSTI)

    Deng, Lingling; Zhou, Hongwei; Chen, Shufen Liu, Bin; Wang, Lianhui; Shi, Hongying

    2015-02-28

    Wide-angle interference (WI) and multi-beam interference (MI) in microcavity are analyzed separately to improve chromaticity and efficiency of the top-emitting white organic light-emitting diodes (TWOLEDs). A classic electromagnetic theory is used to calculate the resonance intensities of WI and MI in top-emitting organic light-emitting diodes (TOLEDs) with influence factors (e.g., electrodes and exciton locations) being considered. The role of WI on the performances of TOLEDs is revealed through using ?-doping technology and comparing blue and red EML positions in top-emitting and bottom-emitting devices. The blue light intensity significantly increases and the chromaticity of TWOLEDs is further improved with the use of enhanced WI (the blue emitting layer moving towards the reflective electrode) in the case of a weak MI. In addition, the effect of the thicknesses of light output layer and carrier transport layers on WI and MI are also investigated. Apart from the microcavity effect, other factors, e.g., carrier balance and carrier recombination regions are considered to obtain TWOLEDs with high efficiency and improved chromaticity near white light equal-energy point.

  1. Synthesis of Mn-intercalated layered titanate by exfoliation-flocculation approach and its efficient photocatalytic activity under visible-light

    SciTech Connect (OSTI)

    Fu, Jie; Tian, Yanlong; Chang, Binbin; Li, Gengnan; Xi, Fengna; Dong, Xiaoping

    2012-12-15

    A novel Mn-intercalated layered titanate as highly active photocatalyst in visible-light region has been synthesized via a convenient and efficient exfoliation-flocculation approach with divalent Mn ions and monolayer titanate nanosheets. The 0.91 nm interlayer spacing of obtained photocatalyst is in accordance with the sum of the thickness of titanate nanosheet and the diameter of Mn ions. The yellow photocatalyst shows a spectral response in visible-light region and the calculated band gap is 2.59 eV. The photocatalytic performance of this material was evaluated by degradation and mineralization of an aqueous dye methylene blue under visible-light irradiation, and an enhanced photocatalytic activity in comparison with protonated titanate as well as the P25 TiO{sub 2} and N-doped TiO{sub 2} was obtained. Additionally, the layered structure is retained, no dye ions intercalating occurs during the photocatalysis process, and a {approx}90% photocatalytic activity can be remained after reusing 3 cycles. - Graphical abstract: Mn-intercalated layered titanate as a novel and efficient visible-light harvesting photocatalyst was synthesized via a convenient and efficient exfoliation-flocculation approach in a mild condition. Highlights: Black-Right-Pointing-Pointer Mn-intercalated titanate has been prepared by exfoliation-flocculation approach. Black-Right-Pointing-Pointer The as-prepared catalyst shows spectral response in the visible-light region. Black-Right-Pointing-Pointer Heat treatment at certain temperature enables formation of Mn-doped TiO{sub 2}. Black-Right-Pointing-Pointer Dye can be degradated effectively by the catalyst under visible light irradiation.

  2. Investigating potential efficiency improvement for light-duty transportation applications through simulation of an organic Rankine cycle for waste-heat recovery

    SciTech Connect (OSTI)

    Edwards, Kevin Dean; Wagner, Robert M

    2010-01-01

    Modern diesel engines used in light-duty transportation applications have peak brake thermal efficiencies in the range of 40-42% for high-load operation with substantially lower efficiencies at realistic road-load conditions. Thermodynamic energy and exergy analysis reveals that the largest losses from these engines are due to heat loss and combustion irreversibility. Substantial improvement in overall engine efficiency requires reducing or recovering these losses. Unfortunately, much of the heat transfer either occurs at relatively low temperatures resulting in large entropy generation (such as in the air-charge cooler), is transferred to low-exergy flow streams (such as the oil and engine coolant), or is radiated or convected directly to the environment. While there are significant opportunities for recovery from the exhaust and EGR cooler for heavy-duty applications, the potential benefits of such a strategy for light-duty applications are unknown due to transient operation, low-load operation at typical driving conditions, and the added mass of the system. We have developed an organic Rankine cycle model using GT-Suite to investigate the potential for efficiency improvement through waste-heat recovery from the exhaust and EGR cooler of a light-duty diesel engine. Results from steady-state and drive-cycle simulations are presented, and we discuss strategies to address operational difficulties associated with transient drive cycles and competition between waste-heat recovery systems, turbochargers, aftertreatment devices, and other systems for the limited thermal resources.

  3. Search for a non-standard-model Higgs boson decaying to a pair of new light bosons in four-muon final states

    SciTech Connect (OSTI)

    Chatrchyan, Serguei; et al.

    2013-11-01

    Results are reported from a search for non-standard-model Higgs boson decays to pairs of new light bosons, each of which decays into the ?+?? final state. The new bosons may be produced either promptly or via a decay chain. The data set corresponds to an integrated luminosity of 5.3 fb?1 of protonproton collisions at View the MathML source, recorded by the CMS experiment at the LHC in 2011. Such Higgs boson decays are predicted in several scenarios of new physics, including supersymmetric models with extended Higgs sectors or hidden valleys. Thus, the results of the search are relevant for establishing whether the new particle observed in Higgs boson searches at the LHC has the properties expected for a standard model Higgs boson. No excess of events is observed with respect to the yields expected from standard model processes. A model-independent upper limit of 0.860.06 fb on the product of the cross section times branching fraction times acceptance is obtained. The results, which are applicable to a broad spectrum of new physics scenarios, are compared with the predictions of two benchmark models as functions of a Higgs boson mass larger than 86 GeV/c2 and of a new light boson mass within the range 0.253.55 GeV/c2

  4. SSL Standards and Guidelines

    SciTech Connect (OSTI)

    none,

    2012-04-01

    Solid-state lighting program technology fact sheet that reviews the key performance and safety standards applicable to SSL-based lighting products.

  5. 12th Semi-Annual Report to Congress on Appliance Energy Efficiency Rulemakings – Implementation Report: Energy Conservation Standards Activities

    Broader source: Energy.gov [DOE]

    This document is the 12th Semi-annual Implementation Report on Energy Conservation Standards Activities of the U.S. Department of Energy, signed by the Assistant Secretary on August 2012.

  6. 15th Semi-Annual Report to Congress on Appliance Energy Efficiency Rulemakings … Implementation Report: Energy Conservation Standards Activities

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

    Conservation Standards Activities Report to Congress February 2014 United States Department of Energy Washington, DC 20585 Message from the Assistant Secretary I am pleased to provide you with the semi-annual Implementation Report on Energy Conservation Standards Activities of the U.S. Department of Energy (DOE). This report meets the requirements of Section 141 of the Energy Policy Act of 2005 (EPACT 2005) and Sections 305 and 321 of the Energy Independence and Security Act of 2007 (EISA

  7. Maximizing photosynthetic productivity and solar conversion efficiency in microalgae by minimizing the light-harvesting chlorophyll antenna size of the photosystems

    SciTech Connect (OSTI)

    Melis, A.; Neidhardt, J.; Benemann, J.R.

    1998-08-01

    The solar conversion efficiency and productivity of photosynthesis in light-acclimated Dunaliella salina (green algae) were analyzed. Cells were grown under continuous low-light (LL; 100 {micro}mol photons/m{sup 2} s) or high-light (HL; 2,000 {micro}mol photons/m{sup 2} s) conditions. HL-grown cells exhibited signs of chronic photoinhibition, i.e., a lower pigment content, a highly truncated chlorophyll (Chl) antenna size for the photosystems, and accumulation of photodamaged photosystem-II (PSII) reaction centers in the chloroplast thylakoids. In spite of these deficiencies, high-light-grown cells showed photosynthetic productivity (300 mmol O{sub 2}/(mol Chl) s) that was {approximately} 3 times greater than that of the normally pigmented LL-grown cells ({approximately} 100 mmol O{sub 2}/(mol Chl) s). Recovery from photoinhibition in the HL-grown cells, induced in the absence of a light-harvesting Chl antenna size enlargement, increased photosynthetic productivity further to {approximately} 650 mmol O{sub 2}/(mol Chl) s. It is shown that, under moderate to high light conditions, D. salina with a highly truncated Chl antenna size will display superior photosynthetic productivity, solar conversion efficiency and H{sub 2} production when compared to the normally pigmented control cells. Estimates of H{sub 2} production in mass culture suggest an average of 200 L H{sub 2}/m{sup 2} d for the cells with the truncated Chl antenna, and less than 50 L H{sub 2}/m{sup 2} d for the normally pigmented cells.

  8. Issuance 2014-11-21:Energy Efficiency Program for Consumer Products: Energy Conservation Standards for Ceiling Fans: Availability of the Preliminary Technical Support Document, Notice of Comment Period Extension

    Broader source: Energy.gov [DOE]

    Energy Efficiency Program for Consumer Products: Energy Conservation Standards for Ceiling Fans: Availability of the Preliminary Technical Support Document, Notice of Comment Period Extension

  9. Lighting Design | Department of Energy

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

    Design Lighting Design Energy-efficient indoor and outdoor lighting design focuses on ways to improve both the quality and efficiency of lighting. | Photo courtesy of ©iStockphoto.com/chandlerphoto. Energy-efficient indoor and outdoor lighting design focuses on ways to improve both the quality and efficiency of lighting. | Photo courtesy of ©iStockphoto.com/chandlerphoto. Energy-efficient indoor and outdoor lighting design focuses on ways to improve both the quality and efficiency of

  10. Defect-Reduction Mechanism for Improving Radiative Efficiency in InGaN/GaN Light-Emitting Diodes using InGaN Underlayers

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Armstrong, Andrew M.; Bryant, Benjamin N.; Crawford, Mary H.; Koleske, Daniel D.; Lee, Stephen R.; Wierer, Jr., Jonathan J.

    2015-04-01

    The influence of a dilute InxGa1-xN (x~0.03) underlayer (UL) grown below a single In0.16Ga0.84N quantum well (SQW), within a light-emitting diode(LED), on the radiative efficiency and deep level defect properties was studied using differential carrier lifetime (DCL) measurements and deep level optical spectroscopy (DLOS). DCL measurements found that inclusion of the UL significantly improved LED radiative efficiency. At low current densities, the non-radiative recombination rate of the LED with an UL was found to be 3.9 times lower than theLED without an UL, while the radiative recombination rates were nearly identical. This, then, suggests that the improved radiative efficiency resultedmore » from reduced non-radiative defect concentration within the SQW. DLOS measurement found the same type of defects in the InGaN SQWs with and without ULs. However, lighted capacitance-voltage measurements of the LEDs revealed a 3.4 times reduction in a SQW-related near-mid-gap defect state for the LED with an UL. Furthermore, quantitative agreement in the reduction of both the non-radiative recombination rate (3.9×) and deep level density (3.4×) upon insertion of an UL corroborates deep level defect reduction as the mechanism for improved LED efficiency.« less

  11. A quantitative method for determination of carrier escape efficiency in GaN-based light-emitting diodes: A comparison of open- and short-circuit photoluminescence

    SciTech Connect (OSTI)

    Lim, Seung-Hyuk; Ko, Young-Ho; Cho, Yong-Hoon

    2014-03-03

    We propose a method to quantitatively analyze the internal quantum efficiency (IQE) as well as the efficiencies of non-radiative recombination in the active region (NRA) and carrier escape out of the active region (ESC) by comparing open-circuit (OC) to short-circuit (SC) conditions of InGaN-based light-emitting diodes (LEDs). First, the IQE was extracted from excitation-power dependent photoluminescence at low temperature, and the electron-hole wavefunction overlaps were calculated under OC and SC conditions. Then, the NRA and ESC efficiencies were quantitatively deduced and also compared with photocurrent data. The proposed method would be useful for assessing and designing quantum barriers and analyzing leakage current in LEDs.

  12. EA-1463: 10 CFR 433: Energy Efficiency Standards for New Federal Commercial and High-Rise Multi-Family Residential Buildings and 10 CFR 435: Energy Efficiency Standards for New Federal Residential Low-Rise Residential Buildings

    Broader source: Energy.gov [DOE]

    The EA examines the potential environmental impacts of the Final Rule on building habitability and the outdoor environment. To identify the potential environmental impacts that may result from implementing the Final Rule for new Federal commercial and residential buildings, DOE compared the Final Rule with the “no-action alternative” of using the current Federal standards – 10 CFR Part 434 and 10 CFR Part 435 Subpart C (referred to as the “no-action alternative”).

  13. Technical support document: Energy efficiency standards for consumer products: Refrigerators, refrigerator-freezers, and freezers including draft environmental assessment, regulatory impact analysis

    SciTech Connect (OSTI)

    1995-07-01

    The Energy Policy and Conservation Act (P.L. 94-163), as amended by the National Appliance Energy Conservation Act of 1987 (P.L. 100-12) and by the National Appliance Energy Conservation Amendments of 1988 (P.L. 100-357), and by the Energy Policy Act of 1992 (P.L. 102-486), provides energy conservation standards for 12 of the 13 types of consumer products` covered by the Act, and authorizes the Secretary of Energy to prescribe amended or new energy standards for each type (or class) of covered product. The assessment of the proposed standards for refrigerators, refrigerator-freezers, and freezers presented in this document is designed to evaluate their economic impacts according to the criteria in the Act. It includes an engineering analysis of the cost and performance of design options to improve the efficiency of the products; forecasts of the number and average efficiency of products sold, the amount of energy the products will consume, and their prices and operating expenses; a determination of change in investment, revenues, and costs to manufacturers of the products; a calculation of the costs and benefits to consumers, electric utilities, and the nation as a whole; and an assessment of the environmental impacts of the proposed standards.

  14. Lighting Design | Department of Energy

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

    as part of your whole-house design -- an approach for building an energy-efficient home. Indoor Lighting Design When designing indoor lighting for energy efficiency,...

  15. Vehicle Technologies Office Merit Review 2014: High Efficiency Clean Combustion in Multi-Cylinder Light-Duty Engines

    Broader source: Energy.gov [DOE]

    Presentation given by Oak Ridge National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about high efficiency...

  16. residential-lighting

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

    Efficiency Progress Report Evaluation Utility Toolkit Residential Lighting Market Research The Residential Lighting Market Research Project will estimate market savings from...

  17. Lighting in Commercial Buildings

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

    are also under consideration. Outside the DOE, the Environmental Protection Agency's Green Lights program promotes energy-efficient lighting as a means to reducing...

  18. Exciting White Lighting

    Broader source: Energy.gov [DOE]

    Windows that emit light and are more energy efficient? Universal Display’s PHOLED technology enables windows that have transparent light-emitting diodes in them.

  19. Lighting in Commercial Buildings

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

    light by passing electricity through mercury vapor, which causes the fluorescent coating to glow or fluoresce. High-Efficiency Ballast (HEB): A lighting conservation feature...

  20. Template synthesis of Ag/AgCl microrods and their efficient visible light-driven photocatalytic performance

    SciTech Connect (OSTI)

    Chen, Hua; Xiao, Liang; Huang, Jianhua

    2014-09-15

    Highlights: Preparation ofAg/AgCl microrods by reaction of Ag{sub 2}WO{sub 4} microrods with NaCl solution. Generation of metallic Ag is induced by the ambient light in the synthesis process. Ag/AgCl shows excellent visible light-driven photodegradation of organic dyes. - Abstract: Ag/AgCl microrods, aggregated by nanoparticles with a diameter ranging from 100 nm to 2 ?m, were prepared by an ion-exchange reaction at 80 C between Ag{sub 2}WO{sub 4} template and NaCl solution. The existence of metallic Ag species was confirmed by XRD, DRS and XPS measurements. Ag/AgCl microrods showed excellent photocatalytic activity for the degradation of rhodamine B and methylene blue under visible light irradiation. The degradation rate constants of rhodamine B and methylene blue are 0.176 and 0.114 min{sup ?1}, respectively. The cycling photodegradation experiments suggest that Ag/AgCl microds could be employed as stable plasmonic photocatalysts for the degradation of organic dyes under visible light irradiation.

  1. Tips: Lighting | Department of Energy

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

    Tips: Lighting Tips: Lighting Lighting choices save you money. Energy-efficient light bulbs are available in a wide variety of sizes and shapes. Lighting choices save you money....

  2. DRIVE CYCLE EFFICIENCY AND EMISSIONS ESTIMATES FOR REACTIVITY CONTROLLED COMPRESSION IGNITION IN A MULTI-CYLINDER LIGHT-DUTY DIESEL ENGINE

    SciTech Connect (OSTI)

    Curran, Scott; Briggs, Thomas E; Cho, Kukwon; Wagner, Robert M

    2011-01-01

    In-cylinder blending of gasoline and diesel to achieve Reactivity Controlled Compression Ignition (RCCI) has been shown to reduce NOx and PM emissions while maintaining or improving brake thermal efficiency as compared to conventional diesel combustion (CDC). The RCCI concept has an advantage over many advanced combustion strategies in that by varying both the percent of premixed gasoline and EGR rate, stable combustion can be extended over more of the light-duty drive cycle load range. Changing the percent premixed gasoline changes the fuel reactivity stratification in the cylinder providing further control of combustion phasing and pressure rise rate than the use of EGR alone. This paper examines the combustion and emissions performance of light-duty diesel engine using direct injected diesel fuel and port injected gasoline to carry out RCCI for steady-state engine conditions which are consistent with a light-duty drive cycle. A GM 1.9L four-cylinder engine with the stock compression ratio of 17.5:1, common rail diesel injection system, high-pressure EGR system and variable geometry turbocharger was modified to allow for port fuel injection with gasoline. Engine-out emissions, engine performance and combustion behavior for RCCI operation is compared against both CDC and a premixed charge compression ignition (PCCI) strategy which relies on high levels of EGR dilution. The effect of percent of premixed gasoline, EGR rate, boost level, intake mixture temperature, combustion phasing and pressure rise rate is investigated for RCCI combustion for the light-duty modal points. Engine-out emissions of NOx and PM were found to be considerably lower for RCCI operation as compared to CDC and PCCI, while HC and CO emissions were higher. Brake thermal efficiency was similar or higher for many of the modal conditions for RCCI operation. The emissions results are used to estimate hot-start FTP-75 emissions levels with RCCI and are compared against CDC and PCCI modes.

  3. Roles of V-shaped pits on the improvement of quantum efficiency in InGaN/GaN multiple quantum well light-emitting diodes

    SciTech Connect (OSTI)

    Quan, Zhijue Wang, Li Zheng, Changda; Liu, Junlin; Jiang, Fengyi

    2014-11-14

    The roles of V-shaped pits on the improvement of quantum efficiency in InGaN/GaN multiple quantum well (MQW) light-emitting diodes are investigated by numerical simulation. The simulation results show that V-shaped pits cannot only screen dislocations, but also play an important role on promoting hole injection into the MQWs. It is revealed that the injection of holes into the MQW via the sidewalls of the V-shaped pits is easier than via the flat region, due to the lower polarization charge densities in the sidewall structure with lower In concentration and (1011)-oriented semi-polar facets.

  4. CAFE Standards (released in AEO2010)

    Reports and Publications (EIA)

    2010-01-01

    Pursuant to the Presidents announcement of a National Fuel Efficiency Policy, the National Highway Traffic Safety Administration (NHTSA) and the EPA have promulgated nationally coordinated standards for tailpipe Carbon Dioxide (CO2)-equivalent emissions and fuel economy for light-duty vehicles (LDVs), which includes both passenger cars and light-duty trucks. In the joint rulemaking, the Environmental Protection Agency is enacting CO2-equivalent emissions standards under the Clean Air Act (CAA), and NHTSA is enacting companion Corporate Average Fuel Economy standards under the Energy Policy and Conservation Act, as amended by the Energy Independence and Security Act of 2007.

  5. Comparing Light Bulbs

    Office of Energy Efficiency and Renewable Energy (EERE)

    In this exercise, students will use a light to demonstrate the difference between being energy-efficient and energy-wasteful, and learn what energy efficiency means.

  6. Incandescent Lighting | Department of Energy

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

    Lighting » Incandescent Lighting Incandescent Lighting Incandescent lighting is the most common, and least energy efficient, type of lighting used in homes. | Photo courtesy of ©iStockphoto/TokenPhoto. Incandescent lighting is the most common, and least energy efficient, type of lighting used in homes. | Photo courtesy of ©iStockphoto/TokenPhoto. Incandescent lamps are often considered the least energy efficient type of electric lighting commonly found in residential buildings. Although

  7. Further reduction of efficiency droop effect by adding a lower-index dielectric interlayer in a surface plasmon coupled blue light-emitting diode with surface metal nanoparticles

    SciTech Connect (OSTI)

    Lin, Chun-Han; Su, Chia-Ying; Chen, Chung-Hui; Yao, Yu-Feng; Shih, Pei-Ying; Chen, Horng-Shyang; Hsieh, Chieh; Kiang, Yean-Woei Yang, C. C.; Kuo, Yang

    2014-09-08

    Further reduction of the efficiency droop effect and further enhancements of internal quantum efficiency (IQE) and output intensity of a surface plasmon coupled, blue-emitting light-emitting diode (LED) by inserting a dielectric interlayer (DI) of a lower refractive index between p-GaN and surface Ag nanoparticles are demonstrated. The insertion of a DI leads to a blue shift of the localized surface plasmon (LSP) resonance spectrum and increases the LSP coupling strength at the quantum well emitting wavelength in the blue range. With SiO{sub 2} as the DI, a thinner DI leads to a stronger LSP coupling effect, when compared with the case of a thicker DI. By using GaZnO, which is a dielectric in the optical range and a good conductor under direct-current operation, as the DI, the LSP coupling results in the highest IQE, highest LED output intensity, and weakest droop effect.

  8. Enabling Energy Efficiency

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

    Energy Frontier Research Centers: Solid-State Lighting Science Center for Frontiers of ... Enabling Energy Efficiency HomeEnergy ResearchEFRCsSolid-State Lighting Science EFRC...

  9. Carrots and Sticks: A Comprehensive Business Model for the Successful Achievement of Energy Efficiency Resource Standards Environmental Energy Technologies DivisionMarch 2011

    SciTech Connect (OSTI)

    Satchwell, Andrew; Cappers, Peter; Goldman, Charles

    2011-03-22

    Energy efficiency resource standards (EERS) are a prominent strategy to potentially achieve rapid and aggressive energy savings goals in the U.S. As of December 2010, twenty-six U.S. states had some form of an EERS with savings goals applicable to energy efficiency (EE) programs paid for by utility customers. The European Union has initiated a similar type of savings goal, the Energy End-use Efficiency and Energy Services Directive, where it is being implemented in some countries through direct partnership with regulated electric utilities. U.S. utilities face significant financial disincentives under traditional regulation which affects the interest of shareholders and managers in aggressively pursuing cost-effective energy efficiency. Regulators are considering some combination of mandated goals ('sticks') and alternative utility business model components ('carrots' such as performance incentives) to align the utility's business and financial interests with state and federal energy efficiency public policy goals. European countries that have directed their utilities to administer EE programs have generally relied on non-binding mandates and targets; in the U.S., most state regulators have increasingly viewed 'carrots' as a necessary condition for successful achievement of energy efficiency goals and targets. In this paper, we analyze the financial impacts of an EERS on a large electric utility in the State of Arizona using a pro-forma utility financial model, including impacts on utility earnings, customer bills and rates. We demonstrate how a viable business model can be designed to improve the business case while retaining sizable ratepayer benefits. Quantifying these concerns and identifying ways they can be addressed are crucial steps in gaining the support of major stakeholder groups - lessons that can apply to other countries looking to significantly increase savings targets that can be achieved from their own utility-administered EE programs.

  10. Commercial / Industrial Lighting

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

    New Commercial Program Development Commercial Current Promotions Industrial Federal Agriculture Commercial & Industrial Lighting Efficiency Program The Commercial & Industrial...

  11. Highly efficient photocatalysis of p-type Cu{sub 2}ZnSnS{sub 4} under visible-light illumination

    SciTech Connect (OSTI)

    Hou, Xian; Li, Yan Yan, Jian-Jun; Wang, Cheng-Wei

    2014-12-15

    Highlights: Kesterite CZTS nanocrystal powder was synthesized by one-pot method. First successful use CZTS nanocrystal powder as photocatalyst. CZTS shows an efficient photocatalysis under visible light irradiation. CZTS photocatalyst having excellent stability. - Abstract: Cu{sub 2}ZnSnS{sub 4}, as a very promising p-type semiconductor material, has been extensively used in the study of solar cells owing to its suitable band gap (1.11.5 eV), large absorption coefficient of 10{sup 4} cm{sup ?1} in the visible spectrum, good photo stability, nontoxicity and relative abundance of the component elements. In this paper, we have successfully synthesized p-type kesterite Cu{sub 2}ZnSnS{sub 4} nanocrystal powder by facile one-pot method, and made our first successful attempt to use Cu{sub 2}ZnSnS{sub 4} nanocrystal powder as a photocatalyst to degradation methyl orange under visible-light irradiation. The exciting results show that in the visible light region, Cu{sub 2}ZnSnS{sub 4} nanocrystal powder possesses an excellent photocatalytic performance of K = 0.0317 min{sup ?1}, nearly about 6 times of well known commercial P25 titania powder performance under the same conditions, which suggests that the p-type kesterite Cu{sub 2}ZnSnS{sub 4} nanocrystal would be a promising candidate of photocatalyst.

  12. Energy Efficiency in India: Challenges and Initiatives

    ScienceCinema (OSTI)

    Ajay Mathur

    2010-09-01

    May 13, 2010 EETD Distinguished Lecture: Ajay Mathur is Director General of the Bureau of Energy Efficiency, and a member of the Prime Minister's Council on Climate Change. As Director General of BEE, Dr. Mathur coordinates the national energy efficiency programme, including the standards and labeling programme for equipment and appliances; the energy conservation building code; the industrial energy efficiency programme, and the DSM programmes in the buildings, lighting, and municipal sectors.

  13. CALiPER Snapshot Report: Outdoor Area Lighting

    SciTech Connect (OSTI)

    none,

    2014-07-01

    Snapshot reports use data from DOE's LED Lighting Facts product list to compare the LED performance to standard technologies, and are designed to help lighting retailers, distributors, designers, utilities, energy efficiency program sponsors, and other stakeholders understand the current state of the LED market and its trajectory.

  14. Lighting Design | Department of Energy

    Energy Savers [EERE]

    Design Lighting Design Energy-efficient indoor and outdoor lighting design focuses on ways ... Energy-efficient indoor and outdoor lighting design focuses on ways to improve both the ...

  15. The effect of efficiency standards on water use and water heating energy use in the US: A detailed end-use treatment

    SciTech Connect (OSTI)

    Koomey, J.G.; Dunham, C.; Lutz, J.D.

    1994-05-01

    Water heating is an important end-use, accounting for roughly 16% of total primary energy consumption in the US residential sector. Recently enacted efficiency standards on water heaters and hot water-using equipment (e.g., dishwashers, clothes washers, showerheads, and faucets) will substantially affect the energy use of water heaters in the future. Assessment of current and future utility programs and government policies requires that regulators, resource planners, and forecasters understand the effects of these regulations. In order to quantify these impacts, this paper presents a detailed end-use breakdown of household hot and cold water use developed for the US Department of Energy. This breakdown is based on both previous studies and new data and analysis. It is implemented in a spreadsheet forecasting framework, which allows significant flexibility in specifying end-use demands and linkages between water heaters and hot water-using appliances. We disaggregate total hot and cold water use (gallons per day) into their component parts: showers, baths, faucets (flow dominated and volume dominated), toilets, landscaping/other, dishwashers, and clotheswashers. We then use the end-use breakdown and data on equipment characteristics to assess the impacts of current efficiency standards on hot water use and water heater energy consumption.

  16. In-Cylinder Fuel Blending of Gasoline/Diesel for Improved Efficiency and Lowest Possible Emissions on a Multi-Cylinder Light-Duty Diesel Engine

    SciTech Connect (OSTI)

    Curran, Scott; Prikhodko, Vitaly Y; Wagner, Robert M; Parks, II, James E; Cho, Kukwon; Sluder, Scott; Kokjohn, Sage; Reitz, Rolf

    2010-01-01

    In-cylinder fuel blending of gasoline/diesel fuel is investigated on a multi-cylinder light-duty diesel engine as a potential strategy to control in-cylinder fuel reactivity for improved efficiency and lowest possible emissions. This approach was developed and demonstrated at the University of Wisconsin through modeling and single-cylinder engine experiments. The objective of this study is to better understand the potential and challenges of this method on a multi-cylinder engine. More specifically, the effect of cylinder-to-cylinder imbalances, heat rejection, and in-cylinder charge motion as well as the potential limitations imposed by real-world turbo-machinery were investigated on a 1.9-liter four-cylinder engine. This investigation focused on one engine condition, 2300 rpm, 4.2 bar brake mean effective pressure (BMEP). Gasoline was introduced with a port-fuel-injection system. Parameter sweeps included gasoline-to-diesel fuel ratio, intake air mixture temperature, in-cylinder swirl number, and diesel start-of-injection phasing. In addition, engine parameters were trimmed for each cylinder to balance the combustion process for maximum efficiency and lowest emissions. An important observation was the strong influence of intake charge temperature on cylinder pressure rise rate. Experiments were able to show increased thermal efficiency along with dramatic decreases in oxides of nitrogen (NOX) and particulate matter (PM). However, indicated thermal efficiency for the multi-cylinder experiments were less than expected based on modeling and single-cylinder results. The lower indicated thermal efficiency is believed to be due increased heat transfer as compared to the model predictions and suggest a need for improved cylinder-to-cylinder control and increased heat transfer control.

  17. Mobile lighting apparatus

    DOE Patents [OSTI]

    Roe, George Michael; Klebanoff, Leonard Elliott; Rea, Gerald W; Drake, Robert A; Johnson, Terry A; Wingert, Steven John; Damberger, Thomas A; Skradski, Thomas J; Radley, Christopher James; Oros, James M; Schuttinger, Paul G; Grupp, David J; Prey, Stephen Carl

    2013-05-14

    A mobile lighting apparatus includes a portable frame such as a moveable trailer or skid having a light tower thereon. The light tower is moveable from a stowed position to a deployed position. A hydrogen-powered fuel cell is located on the portable frame to provide electrical power to an array of the energy efficient lights located on the light tower.

  18. Highly stable and efficient tandem organic light-emitting devices with intermediate connectors using lithium amide as n-type dopant

    SciTech Connect (OSTI)

    Zhou, Dong-Ying; Zu, Feng-Shuo; Shi, Xiao-Bo; Liao, Liang-Sheng E-mail: lsliao@suda.edu.cn; Zhang, Ying-Jie; Aziz, Hany E-mail: lsliao@suda.edu.cn

    2014-08-25

    In this work, we report thermally decomposable lithium amide (LiNH{sub 2}) feasible to function as an effective n-type dopant for intermediate connectors in tandem organic light-emitting devices (OLEDs). Metallic lithium, which is released from the decomposition process of LiNH{sub 2}, is proved by X-ray photoelectron spectroscopy and responsible for n-type electrical doping of electron transporting materials. We demonstrate that tandem OLEDs using LiNH{sub 2} and Cs{sub 2}CO{sub 3} as n-type dopants, respectively, give a comparable electroluminescence efficiency and, moreover, the device with LiNH{sub 2} has far longer operational lifetime. The results therefore highlight the significance of selecting suitable n-type dopant in intermediate connectors to fabricate high-stability tandem OLEDs.

  19. Ag{sub 3}PO{sub 4}/ZnO: An efficient visible-light-sensitized composite with its application in photocatalytic degradation of Rhodamine B

    SciTech Connect (OSTI)

    Liu, Wei; School of Chemistry and Material Science, Huaibei Normal University, Huaibei 235000 ; Wang, Mingliang; Xu, Chunxiang; Chen, Shifu; Fu, Xianliang

    2013-01-15

    Graphical abstract: The free OH radicals generated in the VB of ZnO play the primary role in the visible-light photocatalytic degradation of RhB in Ag{sub 3}PO{sub 4}/ZnO system. The accumulated electrons in the CB of Ag{sub 3}PO{sub 4} can be transferred to O{sub 2} adsorbed on the surface of the composite semiconductors and H{sub 2}O{sub 2} yields. H{sub 2}O{sub 2} reacts with electrons in succession to produce active OH to some extent. Display Omitted Highlights: ? Efficient visible-light-sensitized Ag{sub 3}PO{sub 4}/ZnO composites were successfully prepared. ? Effect of Ag{sub 3}PO{sub 4} content on the catalytic activity of Ag{sub 3}PO{sub 4}/ZnO is studied in detail. ? Rate constant of RhB degradation over Ag{sub 3}PO{sub 4}(3.0 wt.%)/ZnO is 3 times that of Ag{sub 3}PO{sub 4}. ? The active species in RhB degradation are examined by adding a series of scavengers. ? Visible light degradation mechanism of RhB over Ag{sub 3}PO{sub 4}/ZnO is systematically studied. -- Abstract: The efficient visible-light-sensitized Ag{sub 3}PO{sub 4}/ZnO composites with various weight percents of Ag{sub 3}PO{sub 4} were prepared by a facile ball milling method. The photocatalysts were characterized by XRD, DRS, SEM, EDS, XPS, and BET specific area. The OH radicals produced during the photocatalytic reaction was detected by the TAPL technique. The photocatalytic property of Ag{sub 3}PO{sub 4}/ZnO was evaluated by photocatalytic degradation of Rhodamine B under visible light irradiation. Significantly, the results revealed that the photocatalytic activity of the composites was much higher than that of pure Ag{sub 3}PO{sub 4} and ZnO. The rate constant of RhB degradation over Ag{sub 3}PO{sub 4}(3.0 wt.%)/ZnO is 3 times that of single-phase Ag{sub 3}PO{sub 4}. The optimal percentage of Ag{sub 3}PO{sub 4} in the composite is 3.0 wt.%. It is proposed that the OH radicals produced in the valence band of ZnO play the leading role in the photocatalytic degradation of Rhodamine B by

  20. Lighting Basics | Department of Energy

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

    Homes & Buildings » Lighting & Daylighting » Lighting Basics Lighting Basics August 15, 2013 - 5:12pm Addthis Text Version There are many different types of artificial lights (formally called "lamps" in the lighting industry,) which have different applications and uses. Types of lighting include: Fluorescent Lighting High-intensity Discharge Lighting Incandescent Lighting LED Lighting. New lamp designs that use energy-efficient technology are now readily available in the

  1. Lighting Energy Conservation Measures | Department of Energy

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

    Technology Deployment » Efficient Technologies & Products » Lighting Energy Conservation Measures Lighting Energy Conservation Measures Lighting Improvements Lighting technologies are constantly innovating and improving in cost and energy consumption. Lighting upgrades can be simple to install and immediately reduce energy consumption. Lighting Technologies Replace lighting with more efficient lamp types and lower wattages, where cost effective and without compromising light quality for

  2. Monte Carlo study of efficiency roll-off of phosphorescent organic light-emitting diodes: Evidence for dominant role of triplet-polaron quenching

    SciTech Connect (OSTI)

    Eersel, H. van, E-mail: h.v.eersel@tue.nl; Coehoorn, R. [Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven (Netherlands); Philips Research Laboratories, High Tech Campus 4, 5656 AE Eindhoven (Netherlands); Bobbert, P. A.; Janssen, R. A. J. [Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven (Netherlands)

    2014-10-06

    We present an advanced molecular-scale organic light-emitting diode (OLED) model, integrating both electronic and excitonic processes. Using this model, we can reproduce the measured efficiency roll-off for prototypical phosphorescent OLED stacks based on the green dye tris[2-phenylpyridine]iridium (Ir(ppy){sub 3}) and the red dye octaethylporphine platinum (PtOEP) and study the cause of the roll-off as function of the current density. Both the voltage versus current density characteristics and roll-off agree well with experimental data. Surprisingly, the results of the simulations lead us to conclude that, contrary to what is often assumed, not triplet-triplet annihilation but triplet-polaron quenching is the dominant mechanism causing the roll-off under realistic operating conditions. Simulations for devices with an optimized recombination profile, achieved by carefully tuning the dye trap depth, show that it will be possible to fabricate OLEDs with a drastically reduced roll-off. It is envisaged that J{sub 90}, the current density at which the efficiency is reduced to 90%, can be increased by almost one order of magnitude as compared to the experimental state-of-the-art.

  3. 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 (OSTI)

    Not Available

    1980-05-01

    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.

  4. Healthy Efficient Homes Research & Standards

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

    ... Acute CO Deaths IND Approach ID Approach Based on Literature Reported Disease Incidence ... smart ventilation Q1 Milestone: Proposed language for 62.2 revisions to include air ...

  5. Modifying the organic/electrode interface in Organic Solar Cells (OSCs) and improving the efficiency of solution-processed phosphorescent Organic Light-Emitting Diodes (OLEDs)

    SciTech Connect (OSTI)

    Xiao, Teng

    2012-04-27

    Organic semiconductors devices, such as, organic solar cells (OSCs), organic light-emitting diodes (OLEDs) and organic field-effect transistors (OFETs) have drawn increasing interest in recent decades. As organic materials are flexible, light weight, and potentially low-cost, organic semiconductor devices are considered to be an alternative to their inorganic counterparts. This dissertation will focus mainly on OSCs and OLEDs. As a clean and renewable energy source, the development of OSCs is very promising. Cells with 9.2% power conversion efficiency (PCE) were reported this year, compared to < 8% two years ago. OSCs belong to the so-called third generation solar cells and are still under development. While OLEDs are a more mature and better studied field, with commercial products already launched in the market, there are still several key issues: (1) the cost of OSCs/OLEDs is still high, largely due to the costly manufacturing processes; (2) the efficiency of OSCs/OLEDs needs to be improved; (3) the lifetime of OSCs/OLEDs is not sufficient compared to their inorganic counterparts; (4) the physics models of the behavior of the devices are not satisfactory. All these limitations invoke the demand for new organic materials, improved device architectures, low-cost fabrication methods, and better understanding of device physics. For OSCs, we attempted to improve the PCE by modifying the interlayer between active layer/metal. We found that ethylene glycol (EG) treated poly(3,4-ethylenedioxythiophene): polystyrenesulfonate (PEDOT: PSS) improves hole collection at the metal/polymer interface, furthermore it also affects the growth of the poly(3- hexylthiophene) (P3HT):phenyl-C61-butyric acid methyl ester (PCBM) blends, making the phase segregation more favorable for charge collection. We then studied organic/inorganic tandem cells. We also investigated the effect of a thin LiF layer on the hole-collection of copper phthalocyanine (CuPc)/C70-based small molecular OSCs. A

  6. Enhanced photocatalytic efficiency of NiS/TiO{sub 2} composite catalysts using sunset yellow, an azo dye under day light illumination

    SciTech Connect (OSTI)

    Rajamanickam, D.; Dhatshanamurthi, P.; Shanthi, M.

    2015-01-15

    Highlights: • NiS/TiO{sub 2} was successfully synthesized by sol–gel method. • This new method of preparation gives a homogeneous dispersion of NiS on TiO{sub 2}. • Degradation activity of NiS/TiO{sub 2} is found to be more efficient than other catalysts. • Addition of oxidants enhances the degradation efficiency significantly. • COD measurements reveal the complete mineralization of dye molecules. • The catalyst is found to be reusable. - Abstract: To improve the solar light induced photocatalytic application performances of TiO{sub 2}, in this study, the NiS modified TiO{sub 2} composite photocatalysts with various ratios of NiS to TiO{sub 2} were prepared by sol–gel method. The catalyst was characterized by X-ray diffraction (XRD), high resolution scanning electron microscope (HR-SEM), high resolution transmission electron microscope (HR-TEM), energy dispersive spectra (EDS), diffuse reflectance spectra (DRS), photoluminescence spectra (PL), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (B–E–T) surface area measurement methods. The photocatalytic activity of NiS/TiO{sub 2} was investigated for the degradation of sunset yellow (SY) in aqueous solution using solar light. The NiS/TiO{sub 2} is found to be more efficient than prepared TiO{sub 2} and TiO{sub 2}–P25 at pH 7 for the mineralization of SY. The effects of operational parameters such as the amount of photocatalyst, dye concentration and initial pH on photo mineralization of SY have been analyzed. The degradation was strongly enhanced in the presence of oxidants such as H{sub 3}K{sub 5}O{sub 18}S{sub 4} (Oxone), KIO{sub 4}, and KBrO{sub 3}. The mineralization of SY has been identified by COD measurements. The catalyst is found to be reusable.

  7. TEE-0074 - In the Matter of GE Appliances & Lighting | Department of Energy

    Energy Savers [EERE]

    4 - In the Matter of GE Appliances & Lighting TEE-0074 - In the Matter of GE Appliances & Lighting This Decision and Order considers an Application for Exception filed by GE Appliances & Lighting (GE) seeking exception relief from the provision of 10 C.F.R. Part 430, Energy Conservation Program for Consumer Products: Energy Conservation Standards for Refrigerators, Refrigerator-Freezers and Freezers (Refrigerator Efficiency Standards). In its exception request, GE asserts that the

  8. Effective White Light Options for Parking Area Lighting | Department of

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

    Energy Effective White Light Options for Parking Area Lighting Effective White Light Options for Parking Area Lighting Document details lighting technologies that provide low-maintenance alternatives to high-pressure sodium lighting. Download the document detailing effective white light options for parking area lighting. (189.54 KB) More Documents & Publications LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC Engineering Service Center Demonstration Assessment of

  9. Energy Savings Estimates of Light Emitting Diodes in Niche Lighting...

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

    Estimates of Light Emitting Diodes in Niche Lighting Applications Prepared for: Building Technologies Program Office of Energy Efficiency and Renewable Energy U.S. Department of ...

  10. DOE ZERH Webinar: Lighting Efficiency

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy Zero Energy Ready Home (ZERH) Program represents a whole new level of home performance, with rigorous requirements that ensure outstanding levels of energy savings,...

  11. Light Duty Efficient Clean Combustion

    Broader source: Energy.gov [DOE]

    2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C.

  12. Appliance Efficiency Regulations

    Office of Energy Efficiency and Renewable Energy (EERE)

    Note: The federal government has imposed and updated appliance efficiency standards through several legislative acts,* and now has standards in place or under development for 30 classes of...

  13. Ag/AgBr/g-C{sub 3}N{sub 4}: A highly efficient and stable composite photocatalyst for degradation of organic contaminants under visible light

    SciTech Connect (OSTI)

    Cao, Jing; Zhao, Yijie; Lin, Haili; Xu, Benyan; Chen, Shifu

    2013-10-15

    Graphical abstract: Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts displayed excellent photocatalytic activities on the degradation of methyl orange (MO) under visible light. The improved photocatalytic performance and stability of Ag/AgBr/g-C{sub 3}N{sub 4} originated from the synergetic effects of AgBr/g-C{sub 3}N{sub 4} interface and metallic Ag nanoparticles. O{sub 2}?, one of the reactive species, was responsible for the photodegradation of MO compared to H+ and OH. - Highlights: Novel Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalyst was reported. Ag/AgBr/g-C{sub 3}N{sub 4} had novel energy band combination between AgBr and g-C{sub 3}N{sub 4}. Synergetic effects of AgBr/g-C{sub 3}N{sub 4} interface and metallic Ag nanoparticles. Electron trapping role of metallic Ag dominated the stability of Ag/AgBr/g-C{sub 3}N{sub 4}. - Abstract: Novel Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts were constructed via depositionprecipitation method and extensively characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and UVvis diffuse reflectance spectroscopy (DRS). Under visible light (? > 420 nm), Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts displayed much higher photocatalytic activities than those of Ag/AgBr and g-C{sub 3}N{sub 4} for degradation of methyl orange (MO). 50% Ag/AgBr/g-C{sub 3}N{sub 4} presented the best photocatalytic performance, which was mainly attributed to the synergistic effects of AgBr/g-C{sub 3}N{sub 4} interface and the in situ metallic Ag nanoparticles for efficiently separating electronhole pairs. Furthermore, Ag/AgBr/g-C{sub 3}N{sub 4} remained good photocatalytic activity through 5 times of cycle experiments. Additionally, the radical scavengers experiment indicated that O{sub 2}{sup ?} was the main reactive species for the MO degradation under visible light.

  14. Standards and Test Procedures | Department of Energy

    Energy Savers [EERE]

    Appliance & Equipment Standards Standards and Test Procedures Standards and Test Procedures The Department of Energy (DOE) establishes energy efficiency standards for certain ...

  15. lighting in the library

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

    Determine the Feasibility of Installing Energy Efficient Lighting In this part of the exercise, you will plan a new approach to lighting your school library. This new plan will use ...

  16. Experimental Investigation of the Effects of Fuel Characteristics on High Efficiency Clean Combustion (HECC) in a Light-Duty Diesel Engine

    SciTech Connect (OSTI)

    Cho, Kukwon; Han, Manbae; Wagner, Robert M; Sluder, Scott

    2009-01-01

    An experimental study was performed to understand fuel property effects on low temperature combustion (LTC) processes in a light-duty diesel engine. These types of combustion modes are often collectively referred to as high efficiency clean combustion (HECC). A statistically designed set of research fuels, the Fuels for Advanced Combustion Engines (FACE), were used for this study. Engine conditions consistent with low speed cruise (1500 rpm, 2.6 bar BMEP) were chosen for investigating fuel property effects on HECC operation in a GM 1.9-L common rail diesel engine. The FACE fuel matrix includes nine combinations of fuel properties including cetane number (30 to 55), aromatic contents (20 to 45 %), and 90 % distillation temperature (270 to 340 C). HECC operation was achieved with high levels of EGR and adjusting injection parameters, e.g. higher fuel rail pressure and single injection event, which is also known as Premixed Charge Compression Ignition (PCCI) combustion. Engine performance, pollutant emissions, and details of the combustion process are discussed in this paper. Cetane number was found to significantly affect the combustion process with variations in the start of injection (SOI) timing, which revealed that the ranges of SOI timing for HECC operation and the PM emission levels were distinctively different between high cetane number (55) and low cetane number fuels (30). Low cetane number fuels showed comparable levels of regulated gas emissions with high cetane number fuels and had an advantage in PM emissions.

  17. lighting in the library

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

    Determine the Feasibility of Installing Energy Efficient Lighting In this part of the exercise, you will plan a new approach to lighting your school library. This new plan will use less energy, cost less, and result in less greenhouse gas. Your plan will also include bottom line calculations and decision factors such as: identifying the costs and payback for buying and installing new lighting equipment and making a determination about whether or not the new, more efficient lighting will provide

  18. Technical support document: Energy efficiency standards for consumer products: Room air conditioners, water heaters, direct heating equipment, mobile home furnaces, kitchen ranges and ovens, pool heaters, fluorescent lamp ballasts and television sets. Volume 1, Methodology

    SciTech Connect (OSTI)

    Not Available

    1993-11-01

    The Energy Policy and Conservation Act (P.L. 94-163), as amended, establishes energy conservation standards for 12 of the 13 types of consumer products specifically covered by the Act. The legislation requires the Department of Energy (DOE) to consider new or amended standards for these and other types of products at specified times. DOE is currently considering amending standards for seven types of products: water heaters, direct heating equipment, mobile home furnaces, pool heaters, room air conditioners, kitchen ranges and ovens (including microwave ovens), and fluorescent light ballasts and is considering establishing standards for television sets. This Technical Support Document presents the methodology, data, and results from the analysis of the energy and economic impacts of the proposed standards. This volume presents a general description of the analytic approach, including the structure of the major models.

  19. Lighting Developments to 2030

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

    Lighting Choices to Save You Money Lighting Choices to Save You Money This Energy 101 video explores the different lighting options available to consumers. Light your home using the same amount of light for less money. An average household dedicates about 5% of its energy budget to lighting. Switching to energy-efficient lighting is one of the fastest ways to cut your energy bills. By replacing your home's five most frequently used light fixtures or bulbs with models that have earned the ENERGY

  20. Lakeview Light and Power- Commercial Lighting Rebate Program

    Broader source: Energy.gov [DOE]

    Lakeview Light and Power offers a commercial lighting rebate program. Rebates apply to the installation of energy efficient lighting retrofits in non-residential buildings. The rebate program is...

  1. Lighting in Commercial Buildings

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

    from the engineering literature, based on CBECS building activity.) 4. Efficacy: an energy efficiency measure. Technically, the amount of light produced per unit of energy...

  2. Lighting in Commercial Buildings

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

    (CEC), March 1990. Advanced Lighting Technologies Application Guidelines (ALTAG), Building and Appliance Efficiency Office. 3. Dubin, F.S., Mindell, H.L., and Bloome, S., 1976....

  3. LED Lighting | Department of Energy

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

    focusing light in ways that are useful in homes and commercial settings. The light-emitting diode (LED) is one of today's most energy-efficient and rapidly-developing lighting...

  4. Green lights program in China

    SciTech Connect (OSTI)

    Dadi, Zhuo; Hong, Liu

    1996-12-31

    In China`s 9th 5-year plan (1996-2000), the Chinese government has placed high priority on energy conservation. The China Green Lights Program (CGLP) is listed as one of the key projects of energy conservation. The basic strategy of the CGLP is to mobilise all of the potential contributors to participate in the program, and to use market signals and supplementary non-market instruments to facilitate its implementation. Governmental funds and loans will be used as seed money to attract private participation in the program. The program contains the following elements: (1) Information dissemination to educate the public on the economic and other values of the program and to provide CGLP information to increase consumer awareness and, as a result, increase the demand for energy-efficient lighting systems. (2) Development of standards and codes for lighting systems, establishment of product specifications, and enforcement of product standards. (3) Development of quality certification and labelling system to provide assurances to consumers that the products they are purchasing will meet their performance and cost saving expectations. (4) Highlighted support and financing for production technology development and production capacity expansion. (5) Demonstration and pilot projects to boost consumer confidence in green lighting systems and to demonstrate new production technologies and processes. (6) International co-operation to expand the international exchange and absorb advanced technology and experience for implementation of the China Green Lights Program.

  5. Modulating dual-wavelength multiple quantum wells in white light emitting diodes to suppress efficiency droop and improve color rendering index

    SciTech Connect (OSTI)

    Zhao, Yukun; Wang, Shuai; Zheng, Min; Ding, Wen; Yun, Feng; Su, Xilin; Yang, Xiangrong; Liu, Shuo; Guo, Maofeng; Zhang, Ye

    2015-10-14

    In this paper, gallium nitride (GaN) based white light-emitting diodes (WLEDs) with modulated quantities of blue (In{sub 0.15}Ga{sub 0.85}N) quantum wells (QWs) and cyan QWs (In{sub 0.18}Ga{sub 0.82}N) in multiple QW (MQW) structures have been investigated numerically and experimentally. It is demonstrated that the optical performance of LEDs is sensitive to the quantities of cyan QWs in dual-wavelength MQW structures. Compared to the LEDs with respective 0, 4, and 8 cyan QWs (12 QWs in total), the optical performance of the sample with 6 cyan QWs is the best. The deterioration of the optical performance in the sample with less (4 pairs) cyan QWs or more (8 pairs) cyan QWs than 6 cyan QWs may be ascribed to weakened reservoir effect or more defects induced. Compared to conventional blue LEDs (12 blue QWs), the sample with 6 cyan QWs could effectively suppress the efficiency droop (the experimental droop ratio decreases from 50.3% to 39.5% at 80 A/cm{sup 2}) and significantly improve the color rendering index (CRI, increases from 66.4 to 77.0) simultaneously. We attribute the droop suppression to the strengthened reservoir effect and carrier confinement of deeper QWs (higher indium composition) incorporated in the dual-wavelength MQW structures, which lead to the better hole spreading and enhanced radiative recombination. Meanwhile, the remarkable experimental CRI improvement may result from the wider full-width at half-maximum of electroluminescence spectra and higher cyan intensity in WLED chips with dual-wavelength MQW structures.

  6. Highly efficient visible-light-induced photocatalytic activity of Bi{sub 2}WO{sub 6}/BiVO{sub 4} heterojunction photocatalysts

    SciTech Connect (OSTI)

    Chaiwichian, Saranyoo; Inceesungvorn, Burapat; Wetchakun, Khatcharin; Phanichphant, Sukon; Kangwansupamonkon, Wiyong; Wetchakun, Natda

    2014-06-01

    Highlights: Bi{sub 2}WO{sub 6}/BiVO{sub 4} heterojunction photocatalysts were obtained using hydrothermal method. Physicochemical properties played a significant role on photocatalytic efficiency. Bi{sub 2}WO{sub 6}/BiVO{sub 4} heterogeneous structures were greatly enhanced for degradation of MB. A tentative mechanism of charge transfer process in MB degradation was proposed. - Abstract: The Bi{sub 2}WO{sub 6}/BiVO{sub 4} heterojunction photocatalysts were synthesized by hydrothermal method. Physical properties of the heterojunction photocatalyst samples were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The XRD results indicated that BiVO{sub 4} retain monoclinic and tetragonal structures, while Bi{sub 2}WO{sub 6} presented as orthorhombic structure. The Brunauer, Emmett and Teller (BET) adsorptiondesorption of nitrogen gas for specific surface area determination at the temperature of liquid nitrogen was performed on all samples. UVvis diffuse reflectance spectra (UVvis DRS) were used to identify the absorption range and band gap energy of the heterojunction photocatalysts. The photocatalytic performance of Bi{sub 2}WO{sub 6}/BiVO{sub 4} heterojunction photocatalysts was studied via the photodegradation of methylene blue (MB) under visible light irradiation. The results indicated that the heterojunction photocatalyst at 0.5:0.5 mole ratio of Bi{sub 2}WO{sub 6}:BiVO{sub 4} shows the highest photocatalytic activity.

  7. Demand Responsive Lighting: A Scoping Study

    SciTech Connect (OSTI)

    Rubinstein, Francis; Kiliccote, Sila

    2007-01-03

    increased awareness of the need to standardize on emerging wireless technologies are evidence of this transformation. In addition to increased standardization of digital control protocols controller capabilities, the lighting industry has improved the performance of dimming lighting systems over the last two years. The system efficacy of today's current dimming ballasts is approaching that of non-dimming program start ballasts. The study finds that the benefits of applying digital controls technologies to California's unique commercial buildings market are enormous. If California were to embark on an concerted 20 year program to improve the demand responsiveness and energy efficiency of commercial building lighting systems, the State could avoid adding generation capacity, improve the elasticity of the grid, save Californians billion of dollars in avoided energy charges and significantly reduce greenhouse gas emissions.

  8. Federal Appliance Standards

    Office of Energy Efficiency and Renewable Energy (EERE)

    Note: HR 6582 of 2012 made some modifications to the efficiency standards previously adopted for some appliance types. The bill did not adopt new standards for previously unregulated appliances,...

  9. Exhibit Standards and Guidelines

    Broader source: Energy.gov [DOE]

    The Office of Energy Efficiency and Renewable Energy (EERE) has standards and guidelines for designing and displaying exhibits for conferences, trade shows, and other events.

  10. Appliance Standards Resources

    Office of Energy Efficiency and Renewable Energy (EERE)

    The federal government, and some states, have established minimum efficiency standards for certain appliances and equipment, such as refrigerators and clothes washers.

  11. Appliance and Equipment Standards

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

    Standards April 22, 2014 John Cymbalsky Program Manager 1 | Energy Efficiency and Renewable Energy eere.energy.gov 2 Appliance & Equipment Standards Mission The Appliance and Equipment Standards Program's Mission to Fulfill its Statutory Obligation to: * Develop and amend energy conservation standards that achieve the maximum energy efficiency that is technologically feasible and economically justified. * Develop and amend test procedures that are repeatable, reproducible, representative,

  12. Energy Efficiency Investment Fund Rebates

    Office of Energy Efficiency and Renewable Energy (EERE)

    Specific efficiency requirements for rebates are available at  the Energy Efficiency Investment Fund Website in applications for Lighting and Lighting Control Rebates, Natural Gas and Water Heati...

  13. Lighting fundamentals handbook: Lighting fundamentals and principles for utility personnel

    SciTech Connect (OSTI)

    Eley, C.; Tolen, T. Associates, San Francisco, CA ); Benya, J.R. )

    1992-12-01

    Lighting accounts for approximately 30% of overall electricity use and demand in commercial buildings. This handbook for utility personnel provides a source of basic information on lighting principles, lighting equipment, and other considerations related to lighting design. The handbook is divided into three parts. Part One, Physics of Light, has chapters on light, vision, optics, and photometry. Part Two, Lighting Equipment and Technology, focuses on lamps, luminaires, and lighting controls. Part Three, Lighting Design Decisions, deals with the manner in which lighting design decisions are made and reviews relevant methods and issues. These include the quantity and quality of light needed for visual tasks, calculation methods for verifying that lighting needs are satisfied, lighting economics and methods for evaluating investments in efficient lighting systems, and miscellaneous design issues including energy codes, power quality, photobiology, and disposal of lighting equipment. The handbook contains a discussion of the role of the utility in promoting the use of energy-efficient lighting. The handbook also includes a lighting glossary and a list of references for additional information. This convenient and comprehensive handbook is designed to enable utility lighting personnel to assist their customers in developing high-quality, energy-efficient lighting systems. The handbook is not intended to be an up-to-date reference on lighting products and equipment.

  14. New Energy Efficiency Standards for Electric Motors and Walk-in Coolers and Freezers to Save on Energy Bills and Reduce Carbon Pollution

    Broader source: Energy.gov [DOE]

    These standards combined will help reduce harmful carbon pollution by up to 158 million metric tons – equivalent to the annual electricity use of more than 21 million homes – and save businesses $26 billion on utility bills through 2030.

  15. 2014-09-18 Issuance: Energy Conservation Standard for Alternative Efficiency Determination Methods, Basic Model Definition, and Compliance for Commercial HVAC, Refrigeration, and Water Heating Equipment; Supplemental Notice of Proposed Rulemaking

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document is a pre-publication Federal Register supplemental notice of proposed rulemaking regarding energy conservation standards for alternative efficiency determination methods, basic model definition, and compliance for commercial HVAC, Refrigeration, and Water Heating Equipment, as issued by the Deputy Assistant Secretary for Energy Efficiency on September 18, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  16. PFP Emergency Lighting Study

    SciTech Connect (OSTI)

    BUSCH, M.S.

    2000-02-02

    NFPA 101, section 5-9 mandates that, where required by building classification, all designated emergency egress routes be provided with adequate emergency lighting in the event of a normal lighting outage. Emergency lighting is to be arranged so that egress routes are illuminated to an average of 1.0 footcandle with a minimum at any point of 0.1 footcandle, as measured at floor level. These levels are permitted to drop to 60% of their original value over the required 90 minute emergency lighting duration after a power outage. The Plutonium Finishing Plant (PFP) has two designations for battery powered egress lights ''Emergency Lights'' are those battery powered lights required by NFPA 101 to provide lighting along officially designated egress routes in those buildings meeting the correct occupancy requirements. Emergency Lights are maintained on a monthly basis by procedure ZSR-12N-001. ''Backup Lights'' are battery powered lights not required by NFPA, but installed in areas where additional light may be needed. The Backup Light locations were identified by PFP Safety and Engineering based on several factors. (1) General occupancy and type of work in the area. Areas occupied briefly during a shiftly surveillance do not require backup lighting while a room occupied fairly frequently or for significant lengths of time will need one or two Backup lights to provide general illumination of the egress points. (2) Complexity of the egress routes. Office spaces with a standard hallway/room configuration will not require Backup Lights while a large room with several subdivisions or irregularly placed rooms, doors, and equipment will require Backup Lights to make egress safer. (3) Reasonable balance between the safety benefits of additional lighting and the man-hours/exposure required for periodic light maintenance. In some plant areas such as building 236-Z, the additional maintenance time and risk of contamination do not warrant having Backup Lights installed in all rooms

  17. Types of Lighting in Commercial Buildings - Table L3

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

    Any Lighting Lighted Area Only Area Lit by Each Type of Light Incan- descent Standard Fluor-escent Compact Fluor- escent High Intensity Discharge Halogen All...

  18. Types of Lighting in Commercial Buildings - Table L1

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

    Any Lighting Lighted Area Only Area Lit by Each Type of Light Incan- descent Standard Fluor-escent Compact Fluor- escent High Intensity Discharge Halogen All...

  19. Types of Lighting in Commercial Buildings - Table L2

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

    Any Lighting Lighted Area Only Area Lit by Each Type of Light Incan- descent Standard Fluor-escent Compact Fluor- escent High Intensity Discharge Halogen All Buildings*...

  20. National Emission Standards for Hazardous Air Pollutants for Major Sources: Industrial, Commercial, and Institutional Boilers; Guidance for Calculating Efficiency Credits Resulting from Implementation of Energy Conservation Measures

    SciTech Connect (OSTI)

    Cox, Daryl; Papar, Riyaz; Wright, Dr. Anthony

    2013-02-01

    The purpose of this document is to provide guidance for developing a consistent approach to documenting efficiency credits generated from energy conservation measures in the Implementation Plan for boilers covered by the Boiler MACT rule (i.e., subpart DDDDD of CFR part 63). This document divides Boiler System conservation opportunities into four functional areas: 1) the boiler itself, 2) the condensate recovery system, 3) the distribution system, and 4) the end uses of the steam. This document provides technical information for documenting emissions credits proposed in the Implementation Plan for functional areas 2) though 4). This document does not include efficiency improvements related to the Boiler tune-ups.