National Library of Energy BETA

Sample records for indoor lights turned

  1. Energy Department Launches Better Buildings Alliance Indoor Lighting...

    Office of Environmental Management (EM)

    Better Buildings Alliance Indoor Lighting Campaign for Commercial Buildings Energy Department Launches Better Buildings Alliance Indoor Lighting Campaign for Commercial Buildings May ...

  2. LED Lighting Facts Snapshot: Indoor Ambient Lighting

    SciTech Connect (OSTI)

    2013-04-01

    LED Lighting Facts Snapshot reports reveal how today's products really perform, drawing on analysis of verified performance data from the program's online product list.

  3. Energy Department Launches Better Buildings Alliance Indoor Lighting

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

    Campaign for Commercial Buildings | Department of Energy Better Buildings Alliance Indoor Lighting Campaign for Commercial Buildings Energy Department Launches Better Buildings Alliance Indoor Lighting Campaign for Commercial Buildings May 27, 2015 - 7:30am Addthis Today the Energy Department launched a new indoor lighting campaign to increase the use of high efficiency lighting technologies in commercial buildings. Through the Better Buildings Alliance, the Department is working with key

  4. Energy Department Announces Indoor Lighting Winners of Next Generation

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

    Luminaires(tm) Solid-State Lighting Design Competition | Department of Energy Indoor Lighting Winners of Next Generation Luminaires(tm) Solid-State Lighting Design Competition Energy Department Announces Indoor Lighting Winners of Next Generation Luminaires(tm) Solid-State Lighting Design Competition September 17, 2014 - 5:45pm Addthis As part of the Obama Administration's efforts to reduce energy waste in U.S. buildings and help save Americans money by saving energy, the Energy Department

  5. When to Turn Off Your Lights | Department of Energy

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

    Electricity & Fuel » Lighting » When to Turn Off Your Lights When to Turn Off Your Lights The cost effectiveness of when to turn off lights depends on the type of lights and the price of electricity. | Photo courtesy of ©iStockphoto.com/kyoshino. The cost effectiveness of when to turn off lights depends on the type of lights and the price of electricity. | Photo courtesy of ©iStockphoto.com/kyoshino. The cost effectiveness of when to turn off lights depends on the type of bulb and the

  6. When to Turn Off Your Lights | Department of Energy

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

    are not already factored into the rate. LED Lighting The operating life of a light emitting diode (LED) is unaffected by turning it on and off. While lifetime is reduced for...

  7. Procedure to Measure Indoor Lighting Energy Performance

    SciTech Connect (OSTI)

    Deru, M.; Blair, N.; Torcellini, P.

    2005-10-01

    This document provides standard definitions of performance metrics and methods to determine them for the energy performance of building interior lighting systems. It can be used for existing buildings and for proposed buildings. The primary users for whom these documents are intended are building energy analysts and technicians who design, install, and operate data acquisition systems, and who analyze and report building energy performance data. Typical results from the use of this procedure are the monthly and annual energy used for lighting, energy savings from occupancy or daylighting controls, and the percent of the total building energy use that is used by the lighting system. The document is not specifically intended for retrofit applications. However, it does complement Measurement and Verification protocols that do not provide detailed performance metrics or measurement procedures.

  8. When to Turn Off Your Lights | Department of Energy

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

    will also keep a room cooler, an extra benefit in the summer. Halogen Lighting While halogens are more efficient than traditional incandescent bulbs, they use the same technology...

  9. 60 Years Since Nuclear Turned on the Lights | Department of Energy

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

    60 Years Since Nuclear Turned on the Lights 60 Years Since Nuclear Turned on the Lights December 20, 2011 - 10:50am Addthis Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs "We have moved far to tame for peaceful uses the mighty forces unloosed when the atom was split." President Johnson, 1966 At 1:23pm on December 20, 1951, Argonne National Laboratory director Walter Zinn scribbled into his log book, "Electricity flows from atomic energy. Rough

  10. 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,...

  11. 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 ...

  12. Turning windows into solar generators

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

    Turning windows into solar generators Turning windows into solar generators A simple filtration process helped Rice University researchers create flexible, wafer-scale films of highly aligned and closely packed carbon nanotubes. August 8, 2016 Turning windows into solar generators UbiQD founder and President Hunter McDaniel shows quantum dots dissolved in a liquid solution that absorbs ultraviolet light and converts the energy into emitted light of different colors. CREDIT: Courtesy of UbiQD

  13. 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

  14. "Table HC11.13 Lighting Usage Indicators by Northeast Census Region, 2005"

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

    3 Lighting Usage Indicators by Northeast Census Region, 2005" " Million U.S. Housing Units" ,,"Northeast Census Region" ,"U.S. Housing Units (millions)" ,,,"Census Division" ,,"Total Northeast" "Lighting Usage Indicators",,,"Middle Atlantic","New England" "Total U.S. Housing Units",111.1,20.6,15.1,5.5 "Indoor Lights Turned On During Summer" "Number of Lights Turned On" "Between

  15. "Table HC12.13 Lighting Usage Indicators by Midwest Census Region, 2005"

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

    3 Lighting Usage Indicators by Midwest Census Region, 2005" " Million U.S. Housing Units" ,,"Midwest Census Region" ,"U.S. Housing Units (millions)" ,,,"Census Division" ,,"Total Midwest" "Lighting Usage Indicators",,,"East North Central","West North Central" "Total U.S. Housing Units",111.1,25.6,17.7,7.9 "Indoor Lights Turned On During Summer" "Number of Lights Turned On"

  16. "Table HC14.13 Lighting Usage Indicators by West Census Region, 2005"

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

    3 Lighting Usage Indicators by West Census Region, 2005" " Million U.S. Housing Units" ,,"West Census Region" ,"U.S. Housing Units (millions)" ,,,"Census Division" ,,"Total West" "Lighting Usage Indicators",,,"Mountain","Pacific" "Total U.S. Housing Units",111.1,24.2,7.6,16.6 "Indoor Lights Turned On During Summer" "Number of Lights Turned On" "Between 1 and 4 Hours per

  17. Adoption of Light-Emitting Diodes in Common Lighting Applications

    SciTech Connect (OSTI)

    Yamada, Mary; Chwastyk, Dan

    2013-05-01

    Report estimating LED energy savings in nine applications where LEDs compete with traditional lighting sources such as incandescent, halogen, high-pressure sodium, and certain types of fluorescent. The analysis includes indoor lamp, indoor luminaire, and outdoor luminaire applications.

  18. "Table HC10.13 Lighting Usage Indicators by U.S. Census Region, 2005"

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

    3 Lighting Usage Indicators by U.S. Census Region, 2005" " Million U.S. Housing Units" ,"Housing Units (millions)","U.S. Census Region" "Lighting Usage Indicators",,"Northeast","Midwest","South","West" "Total U.S. Housing Units",111.1,20.6,25.6,40.7,24.2 "Indoor Lights Turned On During Summer" "Number of Lights Turned On" "Between 1 and 4 Hours per

  19. "Table HC15.13 Lighting Usage Indicators by Four Most Populated States, 2005"

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

    3 Lighting Usage Indicators by Four Most Populated States, 2005" " Million U.S. Housing Units" ,"Housing Units (millions)","Four Most Populated States" "Lighting Usage Indicators",,"New York","Florida","Texas","California" "Total U.S. Housing Units",111.1,7.1,7,8,12.1 "Indoor Lights Turned On During Summer" "Number of Lights Turned On" "Between 1 and 4 Hours per

  20. 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.

  1. "Table HC13.13 Lighting Usage Indicators by South Census Region, 2005"

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

    3 Lighting Usage Indicators by South Census Region, 2005" " Million U.S. Housing Units" ,,"South Census Region" ,"U.S. Housing Units (millions)" ,,,"Census Division" ,,"Total South" "Lighting Usage Indicators",,,"South Atlantic","East South Central","West South Central" "Total U.S. Housing Units",111.1,40.7,21.7,6.9,12.1 "Indoor Lights Turned On During Summer" "Number of Lights

  2. 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.

  3. Science on the Hill: Turning windows into solar panels

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

    Science on the Hill: Turning windows into solar panels Turning windows into solar panels Working with quantum dots, researchers achieve a breakthrough in solar-concentrating technology that can turn windows into electric generators. February 7, 2016 solar panel windows The luminescent solar concentrator could turn any window into a daytime power source. Science on the Hill: Turning windows into solar panels Sunlight is abundant, free and for all practical purposes, eternal. Harvesting that light

  4. The neutrino turns 60

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

    The neutrino turns 60 The neutrino turns 60 Although neutrinos are extremely abundant, it took 26 years for scientists to confirm their existence. In the 60 years since the neutrino's discovery, we've slowly learned about this intriguing particle. June 20, 2016 Although neutrinos are extremely abundant, it took 26 years for scientists to confirm their existence. In the 60 years since the neutrino's discovery, we've slowly learned about this intriguing particle. Artwork by Sandbox Studio, Chicago

  5. Cheap Fixes for Beating the Heat Indoors | Department of Energy

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

    Cheap Fixes for Beating the Heat Indoors Cheap Fixes for Beating the Heat Indoors July 25, 2013 - 11:20am Addthis Blinds are a great option for cooling your home in the summer. | Photo courtesy of ©iStockphoto/nycshooter Blinds are a great option for cooling your home in the summer. | Photo courtesy of ©iStockphoto/nycshooter Erik Hyrkas Erik Hyrkas Media Relations Specialist, Office of Energy Efficiency & Renewable Energy How can I participate? Instead of turning on the air

  6. Fresh air indoors

    SciTech Connect (OSTI)

    Kull, K.

    1988-09-01

    This article describes and compares ventilation systems for the control of indoor air pollution in residential housing. These include: local exhaust fans, whole-house fans, central exhaust with wall ports, and heat-recovery central ventilation (HRV). HRV's have a higher initial cost than the other systems but they are the only ones that save energy. Homeowners are given guidelines for choosing the system best suited for their homes in terms of efficiency and payback period.

  7. Diamond turning of glass

    SciTech Connect (OSTI)

    Blackley, W.S.; Scattergood, R.O.

    1988-12-01

    A new research initiative will be undertaken to investigate the critical cutting depth concepts for single point diamond turning of brittle, amorphous materials. Inorganic glasses and a brittle, thermoset polymer (organic glass) are the principal candidate materials. Interrupted cutting tests similar to those done in earlier research are Ge and Si crystals will be made to obtain critical depth values as a function of machining parameters. The results will provide systematic data with which to assess machining performance on glasses and amorphous materials

  8. lighting in the library

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

    The amount and quality of light around us affects our health, safety, comfort, and productivity. Our country spends more than $37 billion each year on electricity for lighting, but technologies developed during the past 10 years can help us cut lighting costs by 30% to 60% while enhancing lighting quality and reducing environmental impacts. In a typical indoor lighting system, 50 percent or more of the energy supplied to the lamp can be wasted by obsolete equipment, poor maintenance, or

  9. Turning on LAMP

    ScienceCinema (OSTI)

    Bostedt, Christoph

    2014-07-16

    Christoph Bostedt, a senior staff scientist at SLAC's Linac Coherent Light Source X-ray laser, provides a sneak peek of a powerful new instrument, called LAMP, that is now available for experiments that probe the atomic and molecular realm. LAMP replaces and updates the first instrument at LCLS, dubbed CAMP, which will be installed at an X-ray laser in Germany.

  10. Turning on LAMP

    SciTech Connect (OSTI)

    Bostedt, Christoph

    2014-06-30

    Christoph Bostedt, a senior staff scientist at SLAC's Linac Coherent Light Source X-ray laser, provides a sneak peek of a powerful new instrument, called LAMP, that is now available for experiments that probe the atomic and molecular realm. LAMP replaces and updates the first instrument at LCLS, dubbed CAMP, which will be installed at an X-ray laser in Germany.

  11. Workshop on indoor air quality research needs

    SciTech Connect (OSTI)

    Not Available

    1980-01-01

    Workshop participants report on indoor air quality research needs including the monitoring of indoor air quality, report of the instrumentation subgroup of indoor air quality, health effects, and the report of the control technology session. Risk analysis studies addressing indoor environments were also summarized. (DLS)

  12. An Innovative Reactor Technology to Improve Indoor Air Quality

    SciTech Connect (OSTI)

    Rempel, Jane

    2013-03-30

    As residential buildings achieve tighter envelopes in order to minimize energy used for space heating and cooling, accumulation of indoor air pollutants such as volatile organic compounds (VOCs), becomes a major concern causing poor air quality and increased health risks. Current VOC removal methods include sorbents, ultraviolet photocatalytic oxidation (UVPCO), and increased ventilation, but these methods do not capture or destroy all VOCs or are prohibitively expensive to implement. TIAX's objective in this program was to develop a new VOC removal technology for residential buildings. This novel air purification technology is based on an innovative reactor and light source design along with UVPCO properties of the chosen catalyst to purify indoor air and enhance indoor air quality (IAQ). During the program we designed, fabricated and tested a prototype air purifier to demonstrate its feasibility and effectiveness. We also measured kinetics of VOC destruction on photocatalysts, providing deep insight into reactor design.

  13. indoor | OpenEI Community

    Open Energy Info (EERE)

    Contributor 17 September, 2013 - 12:39 Are you willing to reply to a text message once a day with information about your comfort level at your indoor location? building...

  14. DOE Science Showcase - Light-emitting Diode (LED) Lighting Research | OSTI,

    Office of Scientific and Technical Information (OSTI)

    US Dept of Energy Office of Scientific and Technical Information Light-emitting Diode (LED) Lighting Research Light-emitting diode (LED) lighting is a type of solid-state lighting that uses a semiconductor to convert electricity to light. LED lighting products are beginning to appear in a wide variety of home, business, and industrial products such as holiday lighting, replacement bulbs for incandescent lamps, street lighting, outdoor area lighting and indoor ambient lighting. Over the past

  15. Energy Star Lighting Fixtures: How Does THAT Work?

    Broader source: Energy.gov [DOE]

    If you're considering replacing your indoor or outdoor home lighting, you might want to give an ENERGY STAR fixture a shot.

  16. Lighting Controls | Department of Energy

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

    Controls Lighting Controls Use lighting controls to automatically turn lights on and off as needed, and save energy. Use lighting controls to automatically turn lights on and off as needed, and save energy. Use lighting controls to automatically turn lights on and off as needed, and save energy. Of course you can save energy by turning off lights when they're not needed, but sometimes we forget or don't notice that we've left them on. The most common types of lighting controls include: Dimmers

  17. DOE Publishes CALiPER Snapshot Report on Indoor LED Luminaires | Department

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

    of Energy Indoor LED Luminaires DOE Publishes CALiPER Snapshot Report on Indoor LED Luminaires June 5, 2014 - 10:56am Addthis The U.S. Department of Energy's CALiPER program has released a Snapshot Report on indoor LED luminaires, which utilizes the LED Lighting Facts® program's extensive product database to help industry stakeholders understand the current state and trajectory of the market for that class of products. Based on data through the first quarter of 2014, the report focuses on

  18. Manual on indoor air quality

    SciTech Connect (OSTI)

    Diamond, R.C.; Grimsrud, D.T.

    1983-12-01

    This reference manual was prepared to assist electric utilities in helping homeowners, builders, and new home buyers to understand a broad range of issues related to indoor air quality. The manual is directed to technically knowledgeable persons employed by utility companies - the customer service or marketing representative, applications engineer, or technician - who may not have specific expertise in indoor air quality issues. In addition to providing monitoring and control techniques, the manual summarizes the link between pollutant concentrations, air exchange, and energy conservation and describes the characteristics and health effects of selected pollutants. Where technical information is too lengthy or complex for inclusion in this volume, reference sources are given. Information for this manual was gathered from technical studies, manufacturers' information, and other materials from professional societies, institutes, and associations. The aim has been to provide objective technical and descriptive information that can be used by utility personnel to make informed decisions about indoor air quality issues.

  19. Tune Evaluation From Phased BPM Turn-By-Turn Data

    SciTech Connect (OSTI)

    Alexahin, Y.; Gianfelice-Wendt, E.; Marsh, W.; /Fermilab

    2010-05-18

    In fast ramping synchrotrons like the Fermilab Booster the conventional methods of betatron tune evaluation from the turn-by-turn data may not work due to rapid changes of the tunes (sometimes in a course of a few dozens of turns) and a high level of noise. We propose a technique based on phasing of signals from a large number of BPMs which significantly increases the signal to noise ratio. Implementation of the method in the Fermilab Booster control system is described and some measurement results are presented.

  20. Turning collectors for solar radiation

    DOE Patents [OSTI]

    Barak, Amitzur Z.

    1976-01-01

    A device is provided for turning a solar collector about the polar axis so that the collector is directed toward the sun as the sun tracks the sky each day. It includes two heat-expansive elements and a shadow plate. In the morning a first expansive element is heated, expands to turn the collector to face the sun, while the second expansive element is shaded by the plate. In the afternoon the second element is heated, expands to turn the collector to face the sun, while the first is shaded by the plate.

  1. MHD plant turn down considerations

    SciTech Connect (OSTI)

    Lineberry, J.T.; Chapman, J.N.

    1991-01-01

    The topic of part load operation of the MHD power plant is assessed. Current and future planned MHD research is reviewed in terms of addressing topping and bottoming cycle integration needs. The response of the MHD generator to turn up and down scenarios is reviewed. The concept of turning the MHD power to met changes in plant load is discussed. The need for new ideas and focused research to study MHD plant integration and problems of plant turn down and up is cited. 7 refs., 5 figs., 1 tab.

  2. Turn-by-Turn and Bunch-by-Bunch Transverse Profiles of a Single Bunch in a Full Ring

    SciTech Connect (OSTI)

    Kraus, R.; Fisher, A.S.; /SLAC

    2005-12-15

    The apparatus described in this paper can image the evolution of the transverse profile of a single bunch, isolated from a full PEP-II ring of 1500 bunches. Using this apparatus there are two methods of single bunch imaging; bunch-by-bunch beam profiling can image every bunch in the ring a single bunch at a time with the images of sequential bunches being in order, allowing one to see variations in beam size along a train. Turn-by-turn beam profiling images a single bunch on each successive turn it makes around the ring. This method will be useful in determining the effect that an injected bunch has on a stable bunch as the oscillations of the injected bunch damp out. Turn-by-turn imaging of the synchrotron light uses a system of lenses and mirrors to image many turns of both the major and minor axis of a single bunch across the photocathode of a gateable camera. The bunch-by-bunch method is simpler: because of a focusing mirror used in porting the light from the ring, the synchrotron light from the orbiting electrons becomes an image at a certain distance from the mirror; and since the camera does not use a lens, the photocathode is set exactly at this image distance. Bunch-by-bunch profiling has shown that in the Low Energy Ring (LER) horizontal bunch size decreases along a train. Turn-by-turn profiling has been able to image 100 turns of a single bunch on one exposure of the camera. The turn-by-turn setup has also been able to image 50 turns of the minor axis showing part of the damping process of an oscillating injected charge during a LER fill. The goal is to image the damping of oscillations of injected charge for 100 turns of both the major and minor axis throughout the damping process during trickle injection. With some changes to the apparatus this goal is within reach and will make turn-by-turn imaging a very useful tool in beam diagnostics.

  3. Indoor Environment Program 1990 annual report

    SciTech Connect (OSTI)

    Not Available

    1992-01-01

    Approximately 38% of the energy consumed in the United States is used in buildings. Because humans spend an average of 85% to 90% of their time indoors, energy usage by the buildings sector can have a significant impact on human comfort, health and productivity. To advance energy conservation technologies while maintaining indoor air quality, research in the Indoor Environment Program (IEP) is directed toward understanding relations between building energy (usage and technologies), indoor air quality, and human health, comfort and productivity. The IEP addresses the issue of optimizing the health, comfort and productivity of a building's occupants while maintaining the building's energy efficiency. However, because ventilation is the dominant mechanism for removing pollutants with indoor sources, reduced ventilation may produce undesirable effects on indoor air quality and on the health, comfort, and productivity of a building's occupants. This issue is an important theme for the research of other research groups and projects within IEP.

  4. Indoor Environment Program 1990 annual report

    SciTech Connect (OSTI)

    Not Available

    1992-01-01

    Approximately 38% of the energy consumed in the United States is used in buildings. Because humans spend an average of 85% to 90% of their time indoors, energy usage by the buildings sector can have a significant impact on human comfort, health and productivity. To advance energy conservation technologies while maintaining indoor air quality, research in the Indoor Environment Program (IEP) is directed toward understanding relations between building energy (usage and technologies), indoor air quality, and human health, comfort and productivity. The IEP addresses the issue of optimizing the health, comfort and productivity of a building`s occupants while maintaining the building`s energy efficiency. However, because ventilation is the dominant mechanism for removing pollutants with indoor sources, reduced ventilation may produce undesirable effects on indoor air quality and on the health, comfort, and productivity of a building`s occupants. This issue is an important theme for the research of other research groups and projects within IEP.

  5. Impacts of contaminant storage on indoor air quality: Model developmen...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Impacts of contaminant storage on indoor air quality: Model development Citation Details In-Document Search Title: Impacts of contaminant storage on indoor air...

  6. Energy Impacts of Energy and Indoor Environmental Quality Retrofits...

    Office of Scientific and Technical Information (OSTI)

    Energy Impacts of Energy and Indoor Environmental Quality Retrofits of Apartments in California Citation Details In-Document Search Title: Energy Impacts of Energy and Indoor ...

  7. Indoor airPLUS Construction Specifications Version 1 (Rev. 02...

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

    Specifications Version 1 (Rev. 02) Indoor airPLUS Construction Specifications Version 1 (Rev. 02) Indoor airPLUS Construction Specifications Version 1 (Rev. 02), November 2013, ...

  8. ENERGY STAR Webinar: Energy Savings Plus Health: Indoor Air Quality...

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

    Energy Savings Plus Health: Indoor Air Quality Guidelines for School Building Upgrades ENERGY STAR Webinar: Energy Savings Plus Health: Indoor Air Quality Guidelines for School...

  9. Energy Savings with Acceptable Indoor Air Quality Through Improved...

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

    Savings with Acceptable Indoor Air Quality Through Improved Air Flow Control in Residential Retrofit Energy Savings with Acceptable Indoor Air Quality Through Improved Air Flow ...

  10. Hawaii Department of Health Indoor and Radiological Health Branch...

    Open Energy Info (EERE)

    Indoor and Radiological Health Branch Jump to: navigation, search Name: Hawaii Department of Health Indoor and Radiological Health Branch From Open Energy Information Address: 591...

  11. Diamond turning machine controller implementation

    SciTech Connect (OSTI)

    Garrard, K.P.; Taylor, L.W.; Knight, B.F.; Fornaro, R.J.

    1988-12-01

    The standard controller for a Pnuemo ASG 2500 Diamond Turning Machine, an Allen Bradley 8200, has been replaced with a custom high-performance design. This controller consists of four major components. Axis position feedback information is provided by a Zygo Axiom 2/20 laser interferometer with 0.1 micro-inch resolution. Hardware interface logic couples the computers digital and analog I/O channels to the diamond turning machine`s analog motor controllers, the laser interferometer, and other machine status and control information. It also provides front panel switches for operator override of the computer controller and implement the emergency stop sequence. The remaining two components, the control computer hardware and software, are discussed in detail below.

  12. Diamond turning of thermoplastic polymers

    SciTech Connect (OSTI)

    Smith, E.; Scattergood, R.O.

    1988-12-01

    Single point diamond turning studies were made using a series of thermoplastic polymers with different glass transition temperatures. Variations in surface morphology and surface roughness were observed as a function of cutting speed. Lower glass transition temperatures facilitate smoother surface cuts and better surface finish. This can be attributed to the frictional heating that occurs during machining. Because of the very low glass transition temperatures in polymeric compared to inorganic glasses, the precision machining response can be very speed sensitive.

  13. Turning points in reactor design

    SciTech Connect (OSTI)

    Beckjord, E.S.

    1995-09-01

    This article provides some historical aspects on nuclear reactor design, beginning with PWR development for Naval Propulsion and the first commercial application at Yankee Rowe. Five turning points in reactor design and some safety problems associated with them are reviewed: (1) stability of Dresden-1, (2) ECCS, (3) PRA, (4) TMI-2, and (5) advanced passive LWR designs. While the emphasis is on the thermal-hydraulic aspects, the discussion is also about reactor systems.

  14. Providing better indoor environmental quality brings economicbenefits

    SciTech Connect (OSTI)

    Fisk, William; Seppanen, Olli

    2007-06-01

    This paper summarizes the current scientific evidence that improved indoor environmental quality can improve work performance and health. The review indicates that work and school work performance is affected by indoor temperature and ventilation rate. Pollutant source removal can sometimes improve work performance. Based on formal statistical analyses of existing research results, quantitative relationships are provided for the linkages of work performance with indoor temperature and outdoor air ventilation rate. The review also indicates that improved health and related financial savings are obtainable from reduced indoor tobacco smoking, prevention and remediation of building dampness, and increased ventilation. Example cost-benefit analyses indicate that many measures to improve indoor temperature control and increase ventilation rates will be highly cost effective, with benefit-cost ratios as high as 80 and annual economic benefits as high as $700 per person.

  15. Indoor unit for electric heat pump

    DOE Patents [OSTI]

    Draper, R.; Lackey, R.S.; Fagan, T.J. Jr.; Veyo, S.E.; Humphrey, J.R.

    1984-05-22

    An indoor unit for an electric heat pump is provided in modular form including a refrigeration module, an air mover module, and a resistance heat package module, the refrigeration module including all of the indoor refrigerant circuit components including the compressor in a space adjacent the heat exchanger, the modules being adapted to be connected to air flow communication in several different ways as shown to accommodate placement of the unit in various orientations. 9 figs.

  16. Indoor environment program - 1995 annual report

    SciTech Connect (OSTI)

    Daisey, J.M.

    1996-06-01

    Buildings use approximately one-third of the energy consumed in the United States. The potential energy savings derived from reduced infiltration and ventilation in buildings are substantial, since energy use associated with conditioning and distributing ventilation air is about 5.5 EJ per year. However, since ventilation is the dominant mechanism for removing pollutants from indoor sources, reduction of ventilation can have adverse effects on indoor air quality, and on the health, comfort, and productivity of building occupants. The Indoor Environment Program in LBL`s Energy and Environment Division was established in 1977 to conduct integrated research on ventilation, indoor air quality, and energy use and efficiency in buildings for the purpose of reducing energy liabilities associated with airflows into, within, and out of buildings while maintaining or improving occupant health and comfort. The Program is part of LBL`s Center for Building Science. Research is conducted on building energy use and efficiency, ventilation and infiltration, and thermal distribution systems; on the nature, sources, transport, transformation, and deposition of indoor air pollutants; and on exposure and health risks associated with indoor air pollutants. Pollutants of particular interest include radon; volatile, semivolatile, and particulate organic compounds; and combustion emissions, including environmental tobacco smoke, CO, and NO{sub x}.

  17. Indoor environment program. 1994 annual report

    SciTech Connect (OSTI)

    Daisey, J.M.

    1995-04-01

    Buildings use approximately one-third of the energy consumed in the United States. The potential energy savings derived from reduced infiltration and ventilation in buildings are substantial, since energy use associated with conditioning and distributing ventilation air is about 5.5 EJ per year. However, since ventilation is the dominant mechanism for removing pollutants from indoor sources, reduction of ventilation can have adverse effects on indoor air quality, and on the health, comfort, and productivity of building occupants. The Indoor Environment Program in LBL`s Energy and Environment Division was established in 1977 to conduct integrated research on ventilation, indoor air quality, and energy use and efficiency in buildings for the purpose of reducing energy liabilities associated with airflows into, within, and out of buildings while maintaining or improving occupant health and comfort. The Program is part of LBL`s Center for Building Science. Research is conducted on building energy use and efficiency, ventilation and infiltration, and thermal distribution systems; on the nature, sources, transport, transformation, and deposition of indoor air pollutants; and on exposure and health risks associated with indoor air pollutants. Pollutants of particular interest include radon; volatile, semivolatile, and particulate organic compounds; and combustion emissions, including environmental tobacco smoke, CO, and NO{sub x}.

  18. 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.

  19. Powerpedia Turns Two | Department of Energy

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

    Turns Two Powerpedia Turns Two January 27, 2012 - 3:15pm Addthis The 500 most viewed pages on Powerpedia, the Energy Department's internal information-sharing website which turned two on January 27, 2011. | Image credit Thomas O'Neill. The 500 most viewed pages on Powerpedia, the Energy Department's internal information-sharing website which turned two on January 27, 2011. | Image credit Thomas O'Neill. Wikipedia has revolutionized information sharing the world over. Every minute of every day,

  20. Energy Department Announces Indoor Lighting Winners of Next Generation...

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

    As part of the Obama Administration's efforts to reduce energy waste in U.S. buildings and help save Americans money by saving energy, the Energy Department today announced the ...

  1. Indoor airPLUS Construction Specifications Version 1 (Rev. 02)

    Office of Energy Efficiency and Renewable Energy (EERE)

    Indoor airPLUS Construction Specifications Version 1 (Rev. 02), November 2013, from the U.S. Environmental Protection Agency.

  2. ARM - VAP Product - 10rlprofdep1turn

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

    rlprofdep1turn Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1027252 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Example 10rlprofdep1turn Data Plot Example 10rlprofdep1turn data plot VAP Output : 10RLPROFDEP1TURN 10-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths from first Turner algorithm Active

  3. ARM - VAP Product - 10rlprofmr1turn

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

    rlprofmr1turn Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1027254 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Example 10rlprofmr1turn Data Plot Example 10rlprofmr1turn data plot VAP Output : 10RLPROFMR1TURN Raman LIDAR (RL): water vapor mixing ratio and relative humidity profiles, along with PWV Active Dates 1998.03.01 - 2015.09.23

  4. Climate change and health: Indoor heat exposure in vulnerable populations

    SciTech Connect (OSTI)

    White-Newsome, Jalonne L.; Sanchez, Brisa N.; Jolliet, Olivier; Zhang, Zhenzhen; Parker, Edith A.; Timothy Dvonch, J.; O'Neill, Marie S.

    2012-01-15

    Introduction: Climate change is increasing the frequency of heat waves and hot weather in many urban environments. Older people are more vulnerable to heat exposure but spend most of their time indoors. Few published studies have addressed indoor heat exposure in residences occupied by an elderly population. The purpose of this study is to explore the relationship between outdoor and indoor temperatures in homes occupied by the elderly and determine other predictors of indoor temperature. Materials and methods: We collected hourly indoor temperature measurements of 30 different homes; outdoor temperature, dewpoint temperature, and solar radiation data during summer 2009 in Detroit, MI. We used mixed linear regression to model indoor temperatures' responsiveness to weather, housing and environmental characteristics, and evaluated our ability to predict indoor heat exposures based on outdoor conditions. Results: Average maximum indoor temperature for all locations was 34.85 Degree-Sign C, 13.8 Degree-Sign C higher than average maximum outdoor temperature. Indoor temperatures of single family homes constructed of vinyl paneling or wood siding were more sensitive than brick homes to outdoor temperature changes and internal heat gains. Outdoor temperature, solar radiation, and dewpoint temperature predicted 38% of the variability of indoor temperatures. Conclusions: Indoor exposures to heat in Detroit exceed the comfort range among elderly occupants, and can be predicted using outdoor temperatures, characteristics of the housing stock and surroundings to improve heat exposure assessment for epidemiological investigations. Weatherizing homes and modifying home surroundings could mitigate indoor heat exposure among the elderly.

  5. Indoor airPLUS Construction Specifications | Department of Energy

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

    Specifications Indoor airPLUS Construction Specifications Indoor airPLUS Construction Specifications Version 1 (Rev. 01) EPA 402/K-13/001, February 2013 iap_rev1.pdf (970.38 KB) More Documents & Publications Indoor airPLUS Construction Specifications Version 1 (Rev. 02)

  6. Indoor unit for electric heat pump

    DOE Patents [OSTI]

    Draper, Robert; Lackey, Robert S.; Fagan, Jr., Thomas J.; Veyo, Stephen E.; Humphrey, Joseph R.

    1984-01-01

    An indoor unit for an electric heat pump is provided in modular form including a refrigeration module 10, an air mover module 12, and a resistance heat package module 14, the refrigeration module including all of the indoor refrigerant circuit components including the compressor 36 in a space adjacent the heat exchanger 28, the modules being adapted to be connected to air flow communication in several different ways as shown in FIGS. 4-7 to accommodate placement of the unit in various orientations.

  7. Lighting the Way with Compact Fluorescent Lighting | Department of Energy

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

    Lighting the Way with Compact Fluorescent Lighting Lighting the Way with Compact Fluorescent Lighting April 28, 2009 - 5:00am Addthis John Lippert There is a major push today to get homeowners to adopt compact fluorescent lamp (CFL) light bulbs. They have been on the market for nearly three decades, and many homeowners still do not use them widely. But the tide is definitely turning. Their availability and the percentage of homeowners familiar with the technology and purchasing them for their

  8. Turning Grass into Gas for Less

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

    like this switchgrass could be turned into biofuels, rather than using corn or other food crops. Pull up to the pump these days and chances are your gas will be laced with...

  9. Equivalence in Ventilation and Indoor Air Quality

    SciTech Connect (OSTI)

    Sherman, Max; Walker, Iain; Logue, Jennifer

    2011-08-01

    We ventilate buildings to provide acceptable indoor air quality (IAQ). Ventilation standards (such as American Society of Heating, Refrigerating, and Air-Conditioning Enginners [ASHRAE] Standard 62) specify minimum ventilation rates without taking into account the impact of those rates on IAQ. Innovative ventilation management is often a desirable element of reducing energy consumption or improving IAQ or comfort. Variable ventilation is one innovative strategy. To use variable ventilation in a way that meets standards, it is necessary to have a method for determining equivalence in terms of either ventilation or indoor air quality. This study develops methods to calculate either equivalent ventilation or equivalent IAQ. We demonstrate that equivalent ventilation can be used as the basis for dynamic ventilation control, reducing peak load and infiltration of outdoor contaminants. We also show that equivalent IAQ could allow some contaminants to exceed current standards if other contaminants are more stringently controlled.

  10. Are Ventilation Filters Degrading Indoor Air Quality in California Classrooms?

    SciTech Connect (OSTI)

    Fisk, William J.; Destaillats, H.; Apte, M.G.; Destaillats,, Hugo; Fisk, Michael G. Apte and William J.

    2008-10-01

    Heating, ventilating, and cooling classrooms in California consume substantial electrical energy. Indoor air quality (IAQ) in classrooms affects studenthealth and performance. In addition to airborne pollutants that are emitted directly by indoor sources and those generated outdoors, secondary pollutants can be formed indoors by chemical reaction of ozone with other chemicals and materials. Filters are used in nearly all classroom heating, ventilation and air?conditioning (HVAC) systems to maintain energy-efficient HVAC performance and improve indoor air quality; however, recent evidence indicates that ozone reactions with filters may, in fact, be a source of secondary pollutants. This project quantitatively evaluated ozone deposition in HVAC filters and byproduct formation, and provided a preliminary assessment of the extent towhich filter systems are degrading indoor air quality. The preliminary information obtained will contribute to the design of subsequent research efforts and the identification of energy efficient solutions that improve indoor air quality in classrooms and the health and performance of students.

  11. Energy Department Announces Winners of Next Generation Luminaires™ Solid-State Lighting Design Competition

    Broader source: Energy.gov [DOE]

    The Energy Department announced winners of its seventh annual Next Generation LuminairesTM (NGL) design competition for indoor and outdoor lighting during the LIGHTFAIR® International trade show in New York.

  12. Spatial and temporal variations in indoor environmental conditions...

    Office of Scientific and Technical Information (OSTI)

    conditions, human occupancy, and operational characteristics in a new hospital building Prev Next Title: Spatial and temporal variations in indoor environmental...

  13. Review of some effects of climate change on indoor environmental...

    Office of Scientific and Technical Information (OSTI)

    Review of some effects of climate change on indoor environmental quality and health and associated no-regrets mitigation measures Citation Details In-Document Search This content ...

  14. Indoor air quality & airborne disease control in healthcare facilities...

    Office of Scientific and Technical Information (OSTI)

    Subject: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; MEDICAL ESTABLISHMENTS; INDOOR AIR POLLUTION; CONTROL SYSTEMS; DISEASES; THERMAL COMFORT; SPACE HVAC SYSTEMS Word ...

  15. Impacts of contaminant storage on indoor air quality: Model developmen...

    Office of Scientific and Technical Information (OSTI)

    of airborne chemical species by building materials and furnishings in the indoor environment. The model is applied to describe the interaction between formaldehyde in building...

  16. Criegee intermediates in the indoor environment. New insights

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

    Shallcross, D. E.; Taatjes, C. A.; Percival, C. J.

    2014-03-25

    Criegee intermediates are formed in the ozonolysis of alkenes and play an important role in indoor chemistry, notably as a source of OH radicals. Recent studies have shown that these Criegee intermediates react very quickly with NO2, SO2, and carbonyls, and in this study, steady-state calculations are used to inspect the potential impact of these data on indoor chemistry. It is shown that these reactions could accelerate NO3 formation and SO2 removal in the indoor environment significantly. In addition, reaction between Criegee intermediates and halogenated carbonyls could provide a significant loss process indoors, where currently one does not exist.

  17. ARM - VAP Product - rlprofmerge1turn

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

    Productsrlprofrlprofmerge1turn Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1027756 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP Output : RLPROFMERGE1TURN Merged analog and photon counting profiles used as input for other RLPROF VAPs Active Dates 2004.10.01 - 2015.10.03 Originating VAP Process Raman LIDAR Vertical Profiles : RLPROF

  18. ARM - VAP Product - 10srlprofmr1turn

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

    srlprofmr1turn Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1027724 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP Output : 10SRLPROFMR1TURN Raman LIDAR (RL): 10-sec water vapor mixing ratio andrelative humidity profiles , along with PWV Active Dates 2004.10.01 - 2015.09.23 Originating VAP Process Raman LIDAR Vertical Profiles : RLPROF

  19. ARM - VAP Product - 2rlprofdep1turn

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

    Productsrlprof2rlprofdep1turn Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.5439/1027735 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP Output : 2RLPROFDEP1TURN 2-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths Active Dates 2004.10.01 - 2015.09.25 Originating VAP Process Raman LIDAR Vertical Profiles :

  20. Fluorescent Lighting Basics | Department of Energy

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

    Fluorescent Lighting Basics Fluorescent Lighting Basics October 17, 2013 - 5:39pm Addthis Light from a fluorescent lamp is first created by an electric current conducted through an inert gas producing ultraviolet light that is invisible to the human eye. The ultraviolet light in turn interacts with special blends of phosphors coating the interior surface of the fluorescent lamp tube that efficiently converts the invisible light into useful white light. Fluorescent lamps require a special power

  1. Fluorescent Lighting Basics | Department of Energy

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

    Fluorescent Lighting Basics Fluorescent Lighting Basics October 17, 2013 - 5:39pm Addthis Light from a fluorescent lamp is first created by an electric current conducted through an inert gas producing ultraviolet light that is invisible to the human eye. The ultraviolet light in turn interacts with special blends of phosphors coating the interior surface of the fluorescent lamp tube that efficiently converts the invisible light into useful white light. Fluorescent lamps require a special power

  2. Spatial and temporal variations in indoor environmental conditions, human occupancy, and operational characteristics in a new hospital building

    SciTech Connect (OSTI)

    Ramos, Tiffanie; Dedesko, Sandra; Siegel, Jeffrey A.; Gilbert, Jack A.; Stephens, Brent

    2015-03-02

    The dynamics of indoor environmental conditions, human occupancy, and operational characteristics of buildings influence human comfort and indoor environmental quality, including the survival and progression of microbial communities. A suite of continuous, long-term environmental and operational parameters were measured in ten patient rooms and two nurse stations in a new hospital building in Chicago, IL to characterize the indoor environment in which microbial samples were taken for the Hospital Microbiome Project. Measurements included environmental conditions (indoor dry-bulb temperature, relative humidity, humidity ratio, and illuminance) in the patient rooms and nurse stations; differential pressure between the patient rooms and hallways; surrogate measures for human occupancy and activity in the patient rooms using both indoor air CO₂ concentrations and infrared doorway beam-break counters; and outdoor air fractions in the heating, ventilating, and air-conditioning systems serving the sampled spaces. Measurements were made at 5-minute intervals over consecutive days for nearly one year, providing a total of ~8×10⁶ data points. Indoor temperature, illuminance, and human occupancy/activity were all weakly correlated between rooms, while relative humidity, humidity ratio, and outdoor air fractions showed strong temporal (seasonal) patterns and strong spatial correlations between rooms. Differential pressure measurements confirmed that all patient rooms were operated at neutral pressure. The patient rooms averaged about 100 combined entrances and exits per day, which suggests they were relatively lightly occupied compared to higher traffic environments (e.g., retail buildings) and more similar to lower traffic office environments. There were also clear differences in several environmental parameters before and after the hospital was occupied with patients and staff. Characterizing and understanding factors that influence these building dynamics is vital for

  3. Spatial and temporal variations in indoor environmental conditions, human occupancy, and operational characteristics in a new hospital building

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

    Ramos, Tiffanie; Dedesko, Sandra; Siegel, Jeffrey A.; Gilbert, Jack A.; Stephens, Brent

    2015-03-02

    The dynamics of indoor environmental conditions, human occupancy, and operational characteristics of buildings influence human comfort and indoor environmental quality, including the survival and progression of microbial communities. A suite of continuous, long-term environmental and operational parameters were measured in ten patient rooms and two nurse stations in a new hospital building in Chicago, IL to characterize the indoor environment in which microbial samples were taken for the Hospital Microbiome Project. Measurements included environmental conditions (indoor dry-bulb temperature, relative humidity, humidity ratio, and illuminance) in the patient rooms and nurse stations; differential pressure between the patient rooms and hallways; surrogatemore » measures for human occupancy and activity in the patient rooms using both indoor air CO₂ concentrations and infrared doorway beam-break counters; and outdoor air fractions in the heating, ventilating, and air-conditioning systems serving the sampled spaces. Measurements were made at 5-minute intervals over consecutive days for nearly one year, providing a total of ~8×10⁶ data points. Indoor temperature, illuminance, and human occupancy/activity were all weakly correlated between rooms, while relative humidity, humidity ratio, and outdoor air fractions showed strong temporal (seasonal) patterns and strong spatial correlations between rooms. Differential pressure measurements confirmed that all patient rooms were operated at neutral pressure. The patient rooms averaged about 100 combined entrances and exits per day, which suggests they were relatively lightly occupied compared to higher traffic environments (e.g., retail buildings) and more similar to lower traffic office environments. There were also clear differences in several environmental parameters before and after the hospital was occupied with patients and staff. Characterizing and understanding factors that influence these building dynamics is

  4. Silicon Carbide Emitter Turn-Off Thyristor

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

    Wang, Jun; Wang, Gangyao; Li, Jun; Huang, Alex Q.; Melcher, Jerry; Atcitty, Stan

    2008-01-01

    A novel MOS-conmore » trolled SiC thyristor device, the SiC emitter turn-off thyristor (ETO) is a promising technology for future high-voltage switching applications because it integrates the excellent current conduction capability of a SiC thyristor with a simple MOS-control interface. Through unity-gain turn-off, the SiC ETO also achieves excellent Safe Operation Area (SOA) and faster switching speeds than silicon ETOs. The world's first 4.5-kV SiC ETO prototype shows a forward voltage drop of 4.26 V at 26.5  A / cm 2 current density at room and elevated temperatures. Tested in an inductive circuit with a 2.5 kV DC link voltage and a 9.56-A load current, the SiC ETO shows a fast turn-off time of 1.63 microseconds and a low 9.88 mJ turn-off energy. The low switching loss indicates that the SiC ETO could operate at about 4 kHz if 100  W / cm 2 conduction and the 100  W / cm 2 turn-off losses can be removed by the thermal management system. This frequency capability is about 4 times higher than 4.5-kV-class silicon power devices. The preliminary demonstration shows that the SiC ETO is a promising candidate for high-frequency, high-voltage power conversion applications, and additional developments to optimize the device for higher voltage (>5 kV) and higher frequency (10 kHz) are needed.« less

  5. Residential lighting: Use and potential savings

    SciTech Connect (OSTI)

    1996-09-01

    The 1993 Residential Energy Consumption Survey (RECS) was the first to permit the estimation of annual kilowatt hours (kWh) used for lighting. The survey contained more detailed questions about the number of indoor lights used for specific amounts of time and more detailed questions about the use of outdoor lights than did previous surveys. In addition to these basic questions on the Household Questionnaire, the 1993 RECS also included a supplementary questionnaire, administered to a subset of households, that contained more detailed information about the types of lights used in the household, the rooms in which they were located, and the amount of time they were used.

  6. Lighting the night one step at a time | Y-12 National Security Complex

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

    Controls Lighting Controls Use lighting controls to automatically turn lights on and off as needed, and save energy. Use lighting controls to automatically turn lights on and off as needed, and save energy. Use lighting controls to automatically turn lights on and off as needed, and save energy. Of course you can save energy by turning off lights when they're not needed, but sometimes we forget or don't notice that we've left them on. The most common types of lighting controls include: Dimmers

  7. Pumpkin Power: Turning Food Waste into Energy | Department of...

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

    Pumpkin Power: Turning Food Waste into Energy Pumpkin Power: Turning Food Waste into Energy November 1, 2013 - 1:28pm Addthis Pumpkin Power: Turning Food Waste into Energy Matthew...

  8. Measurement of tool forces in diamond turning

    SciTech Connect (OSTI)

    Drescher, J.; Dow, T.A.

    1988-12-01

    A dynamometer has been designed and built to measure forces in diamond turning. The design includes a 3-component, piezoelectric transducer. Initial experiments with this dynamometer system included verification of its predicted dynamic characteristics as well as a detailed study of cutting parameters. Many cutting experiments have been conducted on OFHC Copper and 6061-T6 Aluminum. Tests have involved investigation of velocity effects, and the effects of depth and feedrate on tool forces. Velocity has been determined to have negligible effects between 4 and 21 m/s. Forces generally increase with increasing depth of cut. Increasing feedrate does not necessarily lead to higher forces. Results suggest that a simple model may not be sufficient to describe the forces produced in the diamond turning process.

  9. DOE Turns 25 | National Nuclear Security Administration | (NNSA)

    National Nuclear Security Administration (NNSA)

    Turns 25 DOE Turns 25 Washington, DC The Department of Energy marked the 25th anniversary of its establishment in 1977

  10. LED Lighting Basics | Department of Energy

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

    LED Lighting Basics LED Lighting Basics August 16, 2013 - 10:07am Addthis Light-emitting diodes (LEDs) efficiently produce light in a fundamentally different way than any legacy or traditional light source. LEDs are compound semiconductor devices that produce light when an appropriate electrical current is applied. Applying electrical current causes electrons to flow from one material in the structure to another and this in turn causes a series of complex interactions at an atomic level that

  11. Office of radiation and indoor air: Program description

    SciTech Connect (OSTI)

    Not Available

    1993-06-01

    The goal of the Environmental Protection Agency`s (EPA) Office of Radiation and Indoor Air is to protect the public and the environment from exposures to radiation and indoor air pollutants. The Office develops protection criteria, standards, and policies and works with other programs within EPA and other agencies to control radiation and indoor air pollution exposures; provides technical assistance to states through EPA`s regional offices and other agencies having radiation and indoor air protection programs; directs an environmental radiation monitoring program; responds to radiological emergencies; and evaluates and assesses the overall risk and impact of radiation and indoor air pollution. The Office is EPA`s lead office for intra- and interagency activities coordinated through the Committee for Indoor Air Quality. It coordinates with and assists the Office of Enforcement in enforcement activities where EPA has jurisdiction. The Office disseminates information and works with state and local governments, industry and professional groups, and citizens to promote actions to reduce exposures to harmful levels of radiation and indoor air pollutants.

  12. Illinois Turning Landfill Trash into Future Cash

    Office of Energy Efficiency and Renewable Energy (EERE)

    Will County, Illinois officials yesterday formally broke ground on a new $7 million project (that includes $1 million of Energy Efficiency Conservation Block Grant funds) to turn methane gas from the Prairie View Landfill into electricity in a partnership with Waste Management. Will County will receive revenue from the sale of the gas created from decomposing garbage which will be harnessed and converted to generate 4.8 megawatts of green electrical power and used to power up to 8,000 homes. The future revenue generated from the sale of the gas and the sale of the electricity could reach $1 million annually.

  13. Corning and Kroger turn whey to yeast

    SciTech Connect (OSTI)

    Not Available

    1981-11-16

    It is reported that Corning and Kroger intend to build a 35,000 sq. ft. plant in Winchester, Ky., that will turn whey into bakers' yeast. The plant will convert whey from Kroger's dairies into bakers' yeast, supplying about 60% of the yeast needed for nine Kroger bakeries. It will also produce syrups and whey protein concentrate for use in other food processing activities. In addition to making useful products, the project will convert the whey to glucose and galactose. The protein component of the whey will be concentrated and used in various foods and feeds.

  14. Indoor radon and decay products: Concentrations, causes, and control strategies

    SciTech Connect (OSTI)

    Nero, A.V.; Gadgil, A.J.; Nazaroff, W.W.; Revzan, K.L.

    1990-11-01

    This report is another in the on going technical report series that addresses various aspects of the DOE Radon Research Program. It provides an overview of what is known about the behavior of radon and its decay products in the indoor environment and examines the manner in which several important classes of factors -- structural, geological, and meteorological -- affect indoor radon concentrations. Information on US indoor radon concentrations, currently available monitoring methods and novel radon control strategies are also explored. 238 refs., 22 figs., 9 tabs.

  15. Turning Algae into Energy in New Mexico

    ScienceCinema (OSTI)

    Sayre, Richard; Olivares, Jose; Lammers, Peter

    2014-06-24

    Los Alamos National Laboratory, as part of the New Mexico Consortium - comprised of New Mexico's major research universities, the Lab, and key industry partners - is conducting research into using algae as a feed stock for a renewable source of fuels, and other products. There are hundreds of thousands of different algae species on Earth. They account for approximately half of the net photosynthesis on the planet, yet they have not been used in any kind of a large scale by humanity, with just a few exceptions. And yet, the biomass is easy to transform into useful products, including fuels, and they contain many other natural products that have high value. In this video Los Alamos and New Mexico State University scientists outline the opportunities and challenges of using science to turn algae into energy.

  16. Hard turning micro-machine tool

    DOE Patents [OSTI]

    DeVor, Richard E; Adair, Kurt; Kapoor, Shiv G

    2013-10-22

    A micro-scale apparatus for supporting a tool for hard turning comprises a base, a pivot coupled to the base, an actuator coupled to the base, and at least one member coupled to the actuator at one end and rotatably coupled to the pivot at another end. A tool mount is disposed on the at least one member. The at least one member defines a first lever arm between the pivot and the tool mount, and a second lever arm between the pivot and the actuator. The first lever arm has a length that is less than a length of the second lever arm. The actuator moves the tool mount along an arc.

  17. Turning Algae into Energy in New Mexico

    SciTech Connect (OSTI)

    Sayre, Richard; Olivares, Jose; Lammers, Peter

    2013-07-29

    Los Alamos National Laboratory, as part of the New Mexico Consortium - comprised of New Mexico's major research universities, the Lab, and key industry partners - is conducting research into using algae as a feed stock for a renewable source of fuels, and other products. There are hundreds of thousands of different algae species on Earth. They account for approximately half of the net photosynthesis on the planet, yet they have not been used in any kind of a large scale by humanity, with just a few exceptions. And yet, the biomass is easy to transform into useful products, including fuels, and they contain many other natural products that have high value. In this video Los Alamos and New Mexico State University scientists outline the opportunities and challenges of using science to turn algae into energy.

  18. Automobile proximity and indoor residential concentrations of BTEX and MTBE

    SciTech Connect (OSTI)

    Corsi, Dr. Richard; Morandi, Dr. Maria; Siegel, Dr. Jeffrey; Hun, Diana E

    2011-01-01

    Attached garages have been identified as important sources of indoor residential air pollution. However, the literature lacks information on how the proximity of cars to the living area affects indoor concentrations of gasoline-related compounds, and the origin of these pollutants. We analyzed data from the Relationships of Indoor, Outdoor, and Personal Air (RIOPA) study and evaluated 114 residences with cars in an attached garage, detached garage or carport, or without cars. Results indicate that homes with cars in attached garages were affected the most. Concentrations in homes with cars in detached garages and residences without cars were similar. The contribution from gasoline-related sources to indoor benzene and MTBE concentrations appeared to be dominated by car exhaust, or a combination of tailpipe and gasoline vapor emissions. Residing in a home with an attached garage could lead to benzene exposures ten times higher than exposures from commuting in heavy traffic.

  19. Criegee intermediates in the indoor environment. New insights

    SciTech Connect (OSTI)

    Shallcross, D. E.; Taatjes, C. A.; Percival, C. J.

    2014-03-25

    Criegee intermediates are formed in the ozonolysis of alkenes and play an important role in indoor chemistry, notably as a source of OH radicals. Recent studies have shown that these Criegee intermediates react very quickly with NO2, SO2, and carbonyls, and in this study, steady-state calculations are used to inspect the potential impact of these data on indoor chemistry. It is shown that these reactions could accelerate NO3 formation and SO2 removal in the indoor environment significantly. In addition, reaction between Criegee intermediates and halogenated carbonyls could provide a significant loss process indoors, where currently one does not exist.

  20. Indoor Thermal Factors and Symptoms in Office Workers: Findings...

    Office of Scientific and Technical Information (OSTI)

    from the U.S. EPA BASE Study Citation Details In-Document Search Title: Indoor Thermal Factors and Symptoms in Office Workers: Findings from the U.S. EPA BASE Study You ...

  1. Next Generation Luminaires Design Competition Announces 2014 Indoor Winners

    Broader source: Energy.gov [DOE]

    Winners in the Indoor category of the sixth annual Next Generation LuminairesTM Design Competition were announced today at The LED Show in Los Angeles. Sponsored by DOE, the Illuminating...

  2. Indoor Temperature and Humidity Data Collection and Analysis

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

    NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Indoor Temperature and Humidity Data Collection and Analysis Chuck Booten, NREL Paul Norton, NERD Cheryn Metzger, NREL Why do we care about indoor Temp/RH? "Anecdotal evidence from the field and controlled studies have raised concerns about the accuracy of software-based energy analysis for existing homes. ....

  3. Promising Technology: Wireless Lighting Occupancy Sensors

    Broader source: Energy.gov [DOE]

    Occupancy sensors and controls detect human presence, and modulate light settings accordingly. When there is no human presence detected, the system can dim or turn off lights. This technology ensures that lights are not used when there are no occupants present, which can lead to significant energy savings.

  4. Alternative Fuels Data Center: City of Cincinnati Turns Sustainable...

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    City of Cincinnati Turns Sustainable Fleet Plan into On-Road Reality to someone by E-mail Share Alternative Fuels Data Center: City of Cincinnati Turns Sustainable Fleet Plan into ...

  5. EECBG Success Story: How Chula Vista, California is Turning Cooking...

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

    Chula Vista, California is Turning Cooking Oil Into Savings EECBG Success Story: How Chula Vista, California is Turning Cooking Oil Into Savings January 19, 2011 - 1:21pm Addthis...

  6. Exposure to formaldehyde in indoor air

    SciTech Connect (OSTI)

    Gammage, R.B. )

    1990-01-01

    Trends in formaldehyde concentrations to which residents are exposed are reviewed, as are the means for assessing these exposures. Concentrations as high as a few ppm encountered in manufactured housing during the 1970s were eliminated after the Housing and Urban Development (HUD) 1984 ruling came into effect. The pressed-wood product industry, and its trade organizations, have made concerted efforts to comply with the ruling. Moreover, they have imposed additional voluntary product standards upon themselves intended to be applicable to a range of pressed-wood products wider than that defined in the HUD standard. Quarterly product testing on arbitrarily selected products shows a general lowering of emission rates with only a few percent of products now being above the HUD level. Measurement of ambient indoor levels of formaldehyde has been largely replaced by testing to assure conformance to product standards. The lower-emitting products on the market, if used in mobile home construction and furnishing, will expectantly produce formaldehyde levels not exceeding 0.1 ppm, except under conditions of unusually high temperature and humidity. Recent studies implicate household dust as a significant carrier of bound formaldehyde. In a few instances, old urea-formaldehyde cavity wall insulation has become friable and particles have blown into living areas. Future health assessments might need to consider this additional pathway of potential exposure.

  7. Model-independent analysis of the Fermilab Tevatron turn-by-turn beam position monitor measurements

    SciTech Connect (OSTI)

    Petrenko, A.V.; Valishev, A.A.; Lebedev, V.A.; /Fermilab

    2011-09-01

    Coherent transverse beam oscillations in the Tevatron were analyzed with the model-independent analysis (MIA) technique. This allowed one to obtain the model-independent values of coupled betatron amplitudes, phase advances, and dispersion function around the ring from a single dipole kick measurement. In order to solve the MIA mode mixing problem which limits the accuracy of determination of the optical functions, we have developed a new technique of rotational MIA mode untangling. The basic idea is to treat each beam position monitor (BPM) as two BPMs separated in a ring by exactly one turn. This leads to a simple criterion of MIA mode separation: the betatron phase advance between any BPM and its counterpart shifted by one turn should be equal to the betatron tune and therefore should not depend on the BPM position in the ring. Furthermore, we describe a MIA-based technique to locate vibrating magnets in a storage ring.

  8. 2016 Connected Lighting Systems Workshop Presentations | Department of

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

    Energy Connected Lighting Systems Workshop Presentations 2016 Connected Lighting Systems Workshop Presentations Pre-Workshop Session: Communications Fundamentals - Michal Koenig, Qualcomm (340.01 KB) Pre-Workshop Session: Communications Fundamentals - Shane Dewing, Intel (2.79 MB) Pre-Workshop Session: Cybersecurity - Ken Modeste, UL (1.28 MB) Workshop Introduction - James Brodrick, U.S. Department of Energy (2 MB) Opening Remarks - Tanuj Mohan, Enlighted (7.75 MB) Leading-Edge Indoor

  9. DOE ZERH Webinar: Ventilation and Filtration Strategies with Indoor airPLUS

    Broader source: Energy.gov [DOE]

    The Indoor airPLUS qualification, a prerequisite for Zero Energy Ready Homes, offers an important platform to improve the indoor air quality (IAQ) in high-performance homes. A critical aspect of...

  10. Indoor airPLUS Version 1 (Rev. 01) Verification Checklist | Department of

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

    Energy Version 1 (Rev. 01) Verification Checklist Indoor airPLUS Version 1 (Rev. 01) Verification Checklist The Rev. 01 checklist has been modified to reflect only the additional Indoor airPLUS requirements and their corresponding section numbers that must be met after completing the ENERGY STAR checklists. iap_verification_checklist_rev_1.pdf (261.75 KB) More Documents & Publications Indoor airPLUS Construction Specifications Indoor airPLUS Construction Specifications Version 1 (Rev.

  11. Advanced Lighting Technologies | GE Global Research

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

    Appliances & Lighting We're developing cutting-edge appliances and innovative lighting to make life easier, reduce costs and increase energy efficiency. Home > Innovation > Appliances & Lighting Rio 2016 Olympic Games' technologies You cannot imagine how far GE reaches into the Rio 2016 Olympic Games. The technologies (visible and invisible) that will light,... Read More » A Quirky Idea: Turning Patents Into Consumer Products In April 2013, GE and Quirky announced a partnership

  12. Investigation of key parameters influencing the efficient photocatalytic oxidation of indoor volatile organic compounds (VOCs)

    SciTech Connect (OSTI)

    Quici, Natalia; Kibanova, Daria; Vera, Maria Laura; Choi, Hyeok; Dionysiou, Dionysios D.; Litter, Marta I.; Cervini-Silva, Javiera; Hodgson, Alfred T.; Destaillats, Hugo; Destaillats, Hugo

    2008-06-01

    Photocatalytic oxidation of indoor VOCs has the potential to eliminate pollutants from indoor environments, thus effectively improving and/or maintaining indoor air quality while reducing ventilation energy costs. Design and operation of UV photocatalytic oxidation (UVPCO) air cleaners requires optimization of various parameters to achieve highest pollutant removal efficiencies while avoiding the formation of harmful secondary byproducts and maximizing catalyst lifetime.

  13. Indoor and Outdoor Spectroradiometer Intercomparison for Spectral Irradiance Measurement

    SciTech Connect (OSTI)

    Habte, A.; Andreas, A.; Ottoson, L.; Gueymard, C.; Fedor, G.; Fowler, S.; Peterson, J.; Naranen, R.; Kobashi, T.; Akiyama, A.; Takagi, S.

    2014-05-01

    This report details the global spectral irradiance intercomparison using spectroradiometers that was organized by the National Renewable Energy Laboratory's Solar Radiation Research Laboratory. The intercomparison was performed both indoors and outdoors on September 17, 2013. Five laboratories participated in the intercomparison using 10 spectroradiometers, and a coordinated measurement setup and a common platform were employed to compare spectral irradiances under both indoor and outdoor conditions. The intercomparison aimed to understand the performance of the different spectroradiometers and to share knowledge in making spectral irradiance measurements. This intercomparison was the first of its kind in the United States.

  14. Commercial Lighting

    Broader source: Energy.gov [DOE]

    Commercial lighting accounts for more than 20 percent of total commercial building energy use. The Energy Department works to reduce lighting energy use through research and deployment.

  15. EECBG Success Story: Georgia County Turning Industrial and Farm...

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

    Georgia County Turning Industrial and Farm Waste Into Big Energy Savings EECBG Success ... Learn more. Addthis Related Articles EECBG Success Story: County Aims to Save with ...

  16. ARM - VAP Product - aerich2nf1turn

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

    Productsaerinfaerich2nf1turn Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.54391027273 What is this? Generate Citation ARM Data Discovery Browse...

  17. ARM - VAP Product - aerich1nf1turn

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

    Productsaerinfaerich1nf1turn Documentation Data Management Facility Plots (Quick Looks) Citation DOI: 10.54391027272 What is this? Generate Citation ARM Data Discovery Browse...

  18. Carbon Capture Turned Upside Down: High-Temperature Adsorption...

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

    Carbon Capture Turned Upside Down: High-Temperature Adsorption & Low-Temperature Desorption (HALD) Previous Next List Joos, Lennart; Lejaeghere, Kurt; Huck, Johanna M.; Van...

  19. Turn Motors Off When Not in Use | Department of Energy

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

    Turn Motors Off When Not in Use Turn Motors Off When Not in Use Motors do not use energy when turned off. Reducing motor operating time by just 10% usually saves more energy than replacing a standard efficiency motor with a premium efficiency motor. This tip sheet discusses pros and cons of repeated motor starts and stops and provides suggested actions. Motor Systems Tip Sheet #10 Turn Motors Off When Not in Use (November 2012) (458 KB) More Documents & Publications Improving Motor and Drive

  20. PPPL featured as DOE celebrates turning 35 | Princeton Plasma...

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

    featured as DOE celebrates turning 35 October 5, 2012 Tweet Widget Google Plus One Share on Facebook 35 Years at the Department of Energy (Flickr Photostream)...

  1. Turning Bayesian model averaging into Bayesian model combination...

    Office of Scientific and Technical Information (OSTI)

    Title: Turning Bayesian model averaging into Bayesian model combination Authors: Carroll, James 1 ; Monteith, Kristine 2 ; Seppi, Kevin 2 ; Martinez, Tony 2 + Show Author ...

  2. NREL: Technology Deployment - More Than 70 Countries Turn to...

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

    More Than 70 Countries Turn to the Clean Energy Solutions Center for Policy Assistance News Solutions Center Announces Collaboration with R20 Regions of Climate Action Clean Energy ...

  3. Automatic Mechetronic Wheel Light Device

    DOE Patents [OSTI]

    Khan, Mohammed John Fitzgerald

    2004-09-14

    A wheel lighting device for illuminating a wheel of a vehicle to increase safety and enhance aesthetics. The device produces the appearance of a "ring of light" on a vehicle's wheels as the vehicle moves. The "ring of light" can automatically change in color and/or brightness according to a vehicle's speed, acceleration, jerk, selection of transmission gears, and/or engine speed. The device provides auxiliary indicator lights by producing light in conjunction with a vehicle's turn signals, hazard lights, alarm systems, and etc. The device comprises a combination of mechanical and electronic components and can be placed on the outer or inner surface of a wheel or made integral to a wheel or wheel cover. The device can be configured for all vehicle types, and is electrically powered by a vehicle's electrical system and/or battery.

  4. Combined features in the primordial spectra induced by a sudden turn in two-field DBI inflation

    SciTech Connect (OSTI)

    Mizuno, Shuntaro; Saito, Ryo; Langlois, David E-mail: rsaito@apc.univ-paris7.fr

    2014-11-01

    We investigate the features generated by a sharp turn along the inflationary trajectory in a two-field model of Dirac-Born-Infeld inflation, where one of the fields is heavy. Distinct features are generated by two different effects: the mixing of the light and heavy modes during the turn, on the one hand, and the resonance between the oscillations along the heavy direction after the turn, on the other hand. Contrary to models with standard kinetic terms, the resonance effect is not strongly suppressed because the action contains derivative interactions. Working in the potential basis, we study the oscillations after the turn and compute the amplitude of the mixing and resonance features in the power spectrum, as well as in the bispectrum for the latter effect. We find that the amplitudes and positions of these combined features obey specific consistency relations, which could be confronted with cosmological data.

  5. LX-17 Corner-Turning and Reactive Flow Failure

    SciTech Connect (OSTI)

    Souers, P C; Andreski, H; Cook III, C F; Garza, R; Pastrone, R; Phillips, D; Roeske, F; Vitello, P; Molitoris, J

    2004-03-11

    We have performed a series of highly-instrumented experiments examining corner-turning of detonation. A TATB booster is inset 15 mm into LX-17 (92.5% TATB, 7.5% kel-F) so that the detonation must turn a right angle around an air well. An optical pin located at the edge of the TATB gives the start time of the corner-turn. The breakout time on the side and back edges is measured with streak cameras. Three high-resolution X-ray images were taken on each experiment to examine the details of the detonation. We have concluded that the detonation cannot turn the corner and subsequently fails, but the shock wave continues to propagate in the unreacted explosive, leaving behind a dead zone. The detonation front farther out from the corner slowly turns and eventually reaches the air well edge 180{sup o} from its original direction. The dead zone is stable and persists 7.7 {micro}s after the corner-turn, although it has drifted into the original air well area. Our regular reactive flow computer models sometimes show temporary failure but they recover quickly and are unable to model the dead zones. We present a failure model that cuts off the reaction rate below certain detonation velocities and reproduces the qualitative features of the corner-turning failure.

  6. Realistic vs sudden turn-on of natural incoherent light: Coherences...

    Office of Scientific and Technical Information (OSTI)

    Chemical Physics Theory Group, Department of Chemistry, and Center for Quantum Information and Quantum Control, University of Toronto, Toronto, Ontario M5S 3H6 (Canada) Publication ...

  7. NM company wants to turn your windows into solar panels

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

    NM company wants to turn your windows into solar panels NM company wants to turn your windows into solar panels "There's an opportunity to generate electricity and power buildings with their windows" August 1, 2016 The UbiQD Team The UbiQD team celebrates the opening of its new quantum dot manufacturing facility in Los Alamos July 29. Contact Hunter McDaniel UbiQD Email UbiQD LLC, a quantum dot company, says it can turn windows into solar generators. "There's an opportunity to

  8. Diamond turning of Si and Ge single crystals

    SciTech Connect (OSTI)

    Blake, P.; Scattergood, R.O.

    1988-12-01

    Single-point diamond turning studies have been completed on Si and Ge crystals. A new process model was developed for diamond turning which is based on a critical depth of cut for plastic flow-to-brittle fracture transitions. This concept, when combined with the actual machining geometry for single-point turning, predicts that {open_quotes}ductile{close_quotes} machining is a combined action of plasticity and fracture. Interrupted cutting experiments also provide a meant to directly measure the critical depth parameter for given machining conditions.

  9. Observation of diamond turned OFHC copper using Scanning Tunneling Microscopy

    SciTech Connect (OSTI)

    Grigg, D.A.; Russell, P.E.; Dow, T.A.

    1988-12-01

    Diamond turned OFHC copper samples have been observed within the past few months using the Scanning Tunneling Microscope. Initial results have shown evidence of artifacts which may be used to better understand the diamond turning process. The STM`s high resolution capability and three dimensional data representation allows observation and study of surface features unobtainable with conventional profilometry systems. Also, the STM offers a better quantitative means by which to analyze surface structures than the SEM. This paper discusses findings on several diamond turned OFHC copper samples having different cutting conditions. Each sample has been cross referenced using STM and SEM.

  10. As summer turns to fall, a new school year begins

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

    As summer turns to fall, a new school year begins Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit As summer turns to fall, a new school year begins Welcome to the back-to-school issue of Community Connections August 1, 2013 Kurt Steinhaus, Director of the Community Programs Office Kurt Steinhaus, Director of the Community Programs Office Contact Community Programs Office Director Kurt

  11. To the Cloud! Apidae Helps Modelers Turn Information into Knowledge |

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

    Department of Energy To the Cloud! Apidae Helps Modelers Turn Information into Knowledge To the Cloud! Apidae Helps Modelers Turn Information into Knowledge October 26, 2015 - 2:41pm Addthis Apidae is a collection of cloud-based simulation and data analysis tools that help modelers better understand their models. Image credit: BUILDlab. Apidae is a collection of cloud-based simulation and data analysis tools that help modelers better understand their models. Image credit: BUILDlab. Apidae

  12. Turning Leftover Trees into Biogasoline | Department of Energy

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

    Turning Leftover Trees into Biogasoline Turning Leftover Trees into Biogasoline June 7, 2010 - 11:00am Addthis Researchers at Virginia Tech are working to show how biogasoline could potentially be created in existing petroleum refineries, instead of at new biorefineries as shown here. | File illustration Researchers at Virginia Tech are working to show how biogasoline could potentially be created in existing petroleum refineries, instead of at new biorefineries as shown here. | File illustration

  13. Indoor Environmental Quality Benefits of Apartment Energy Retrofits

    SciTech Connect (OSTI)

    Noris, Federico; Adamkiewicz, Gary; Delp, William W.; Hotchi, Toshifumi; Russell, Marion; Singer, Brett C.; Spears, Michael; Vermeer, Kimberly; Fisk, William J.

    2013-06-01

    Sixteen apartments serving low-income populations in three buildings were retrofit with the goal of simultaneously reducing energy consumption and improving indoor environmental quality (IEQ). Retrofit measures varied among apartments and included, among others, envelope sealing, installation of continuous mechanical ventilation systems, upgrading bathroom fans and range hoods, attic insulation, replacement of heating and cooling systems, and adding wall-mounted particle air cleaners. IEQ parameters were measured, generally for two one-week periods before and after the retrofits. The measurements indicate an overall improvement in IEQ conditions after the retrofits. Comfort conditions, bathroom humidity, and concentrations of carbon dioxide, acetaldehyde, volatile organic compounds, and particles generally improved. Formaldehyde and nitrogen dioxide levels decreased in the building with the highest concentrations, were unchanged in a second building, and increased in a third building. IEQ parameters other than particles improved more in apartments with continuous mechanical ventilation systems installed. In general, but not consistently, larger percent increases in air exchange rates were associated with larger percent decreases in indoor levels of the pollutants that primarily come from indoor sources.

  14. The Airborne Metagenome in an Indoor Urban Environment

    SciTech Connect (OSTI)

    Tringe, Susannah; Zhang, Tao; Liu, Xuguo; Yu, Yiting; Lee, Wah Heng; Yap, Jennifer; Yao, Fei; Suan, Sim Tiow; Ing, Seah Keng; Haynes, Matthew; Rohwer, Forest; Wei, Chia Lin; Tan, Patrick; Bristow, James; Rubin, Edward M.; Ruan, Yijun

    2008-02-12

    The indoor atmosphere is an ecological unit that impacts on public health. To investigate the composition of organisms in this space, we applied culture-independent approaches to microbes harvested from the air of two densely populated urban buildings, from which we analyzed 80 megabases genomic DNA sequence and 6000 16S rDNA clones. The air microbiota is primarily bacteria, including potential opportunistic pathogens commonly isolated from human-inhabited environments such as hospitals, but none of the data contain matches to virulent pathogens or bioterror agents. Comparison of air samples with each other and nearby environments suggested that the indoor air microbes are not random transients from surrounding outdoor environments, but rather originate from indoor niches. Sequence annotation by gene function revealed specific adaptive capabilities enriched in the air environment, including genes potentially involved in resistance to desiccation and oxidative damage. This baseline index of air microbiota will be valuable for improving designs of surveillance for natural or man-made release of virulent pathogens.

  15. Is CO2 an Indoor Pollutant? Higher Levels of CO2 May Diminish...

    Office of Scientific and Technical Information (OSTI)

    Decision Making Performance Citation Details In-Document Search Title: Is CO2 an Indoor Pollutant? Higher Levels of CO2 May Diminish Decision Making Performance You are ...

  16. Is CO2 an Indoor Pollutant? Direct Effects of Low to Moderate...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Is CO2 an Indoor Pollutant? Direct Effects of Low to Moderate CO2 ... Sponsoring Org: USDOE Office of Science (SC) Country of Publication: United States ...

  17. EIS-0127: New Energy-Efficient Homes Programs, Assessing Indoor Air Quality Options

    Broader source: Energy.gov [DOE]

    The Bonneville Power Administration developed this EIS to explore whether different building techniques will control indoor air quality and still maintain cost-effective energy savings.

  18. Light Source

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

    a Light Source Data and Analysis Framework at NERSC Jack Deslippe, Shane Canon, Eli Dart, Abdelilah Essiari, Alexander Hexemer, Dula Parkinson, Simon Patton, Craig Tull + Many More The ALS Data Needs September 21, 2010 - NIST (MD) Light source data volumes are growing many times faster than Moore's law. ● Light source luminosity ● Detector resolution & rep-rates ● Sample automation BES user facilities serve 10,000 scientists and engineers every year. Mostly composed of many small

  19. Lighting Renovations

    Broader source: Energy.gov [DOE]

    When undertaking a lighting renovation in a Federal building, daylighting is the primary renewable energy opportunity. Photovoltaics (PV) also present an excellent opportunity. While this guide...

  20. Cerenkov Light

    SciTech Connect (OSTI)

    Slifer, Karl

    2013-06-13

    The bright blue glow from nuclear reactors is Cerenkov light. Karl Slifer describes how nuclear physicists can use this phenomenon to study the nucleus of the atom.

  1. Cerenkov Light

    ScienceCinema (OSTI)

    Slifer, Karl

    2014-05-22

    The bright blue glow from nuclear reactors is Cerenkov light. Karl Slifer describes how nuclear physicists can use this phenomenon to study the nucleus of the atom.

  2. Residential Lighting

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

    & Events Expand News & Events Skip navigation links Residential Residential Lighting Energy Star Appliances Consumer Electronics Heat Pump Water Heaters Electric Storage Water...

  3. Portable lamp with dynamically controlled lighting distribution

    DOE Patents [OSTI]

    Siminovitch, Michael J.; Page, Erik R.

    2001-01-01

    A double lamp table or floor lamp lighting system has a pair of compact fluorescent lamps (CFLs) arranged vertically with a reflective septum in between. By selectively turning on one or both of the CFLs, down lighting, up lighting, or both up and down lighting is produced. The control system can also vary the light intensity from each CFL. The reflective septum insures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user. Planar compact fluorescent lamps, e.g. circular CFLs, particularly oriented horizontally, are preferable. CFLs provide energy efficiency. The lighting system may be designed for the home, hospitality, office or other environments.

  4. Nuclear Navy Turns 50 | National Nuclear Security Administration | (NNSA)

    National Nuclear Security Administration (NNSA)

    Navy Turns 50 Nuclear Navy Turns 50 Washington, DC Crew members of the U.S.S. Enterprise, the first nuclear-powered aircraft carrier, spell out NR-50! To commemorate the 50th anniversary of the Nuclear Navy. Admiral Hyman G. Rickover formed the Nuclear Power Branch within the Navy's Bureau of Ships in August 1948. The Office of Naval Reactors is an integrated organization of DOE and the Department of Navy. The Enterprise's eight A2W nuclear reactors were developed by Bettis Laboratory, with the

  5. Employees turn student | Y-12 National Security Complex

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

    Employees turn student Employees turn student Posted: April 19, 2013 - 1:05pm Y-12 offered classes at UT back in 1954. Read more At every stage of its development - from the initial floating of ideas to the realization of those ideas - the University of Tennessee's new Engineering Management graduate program seems a perfect example of the possibilities created by Y-12 and UT's formal partnership. "Through the leadership of Dr. Rupy Sawhney, we started out with an initiative in Industrial

  6. Turning Bayesian model averaging into Bayesian model combination

    Office of Scientific and Technical Information (OSTI)

    (Conference) | SciTech Connect Turning Bayesian model averaging into Bayesian model combination Citation Details In-Document Search Title: Turning Bayesian model averaging into Bayesian model combination Authors: Carroll, James [1] ; Monteith, Kristine [2] ; Seppi, Kevin [2] ; Martinez, Tony [2] + Show Author Affiliations Los Alamos National Laboratory BYU Publication Date: 2011-07-28 OSTI Identifier: 1084524 Report Number(s): LA-UR-11-04419; LA-UR-11-4419 DOE Contract Number: AC52-06NA25396

  7. MOWII Webinar on Laufer Wind: Radar-Activated Obstruction Lighting

    Broader source: Energy.gov [DOE]

    Join the Maine Ocean and Wind Industry Initiative (MOWII) for a webinar exploring Laufer Wind’s Aircraft Detection System, designed to turn aviation warning lights on only when aircraft are in the...

  8. Simultaneous linear optics and coupling correction for storage rings with turn-by-turn beam position monitor data

    SciTech Connect (OSTI)

    Yang, Xi; Huang, Xiaobiao

    2015-11-10

    We propose a method to simultaneously correct linear optics errors and linear coupling for storage rings using turn-by-turn (TbT) beam position monitor (BPM) data. The independent component analysis (ICA) method is used to isolate the betatron normal modes from the measured TbT BPM data. The betatron amplitudes and phase advances of the projections of the normal modes on the horizontal and vertical planes are then extracted, which, combined with dispersion measurement, are used to fit the lattice model. Furthermore, the fitting results are used for lattice correction. Our method has been successfully demonstrated on the NSLS-II storage ring.

  9. Indoor air quality study of forty east Tennessee homes

    SciTech Connect (OSTI)

    Hawthorne, A.R.; Gammage, R.B.; Dudney, C.S.; Hingerty, B.E.; Schuresko, D.D.; Parzyck, D.C.; Womack, D.R.; Morris, S.A.; Westley, R.R.; White, D.A.

    1984-12-01

    Over a one-year period, measurements of indoor air pollutants (CO/sub x/, NO/sub x/, formaldehyde, volatile organics, particulates, and radon) were made in 40 homes in East Tennessee. The houses were of various ages with different types of insulation and heating. Over one-half of the houses exceeded the ASHRAE indoor ceiling guideline of 0.1 ppM for formaldehyde on at least one occasion. Over the duration of the study, older houses averaged 0.04 ppM of formaldehyde while houses less than 5 years old averaged 0.08 ppM (P < 0.01). The highest concentration of formaldehyde measured was 0.4 ppM in a new home. Diurnal and seasonal fluctuations in levels of formaldehyde in some homes were as much as twofold and tenfold, respectively. The highest levels of formaldehyde were usually recorded during summer months. The concentration in indoor air of various organics was at least tenfold higher than in outdoor air. Carbon monoxide and nitrgen oxides were usually <2 and <0.02 ppM, respectively, except when gas stoves or kerosene space heaters were operating, or when a car was running in the garage. In 30% of the houses, the annual indoor guideline for radon, 4 pCi/L, was exceeded. The mean radon level in houses built on the ridgelines was 4.4 pCi/L, while houses located in the valleys had a mean level of 1.7 pCi/L (P < 0.01). The factor having the most impact on infiltration was operation of the central duct fan of the heating, ventilation, and air conditioning system. The mean rate of air exchange increased from 0.39 to 0.74 h/sup -1/ when the duct fan was operated (measurements prior to December 1982). This report presents the study design and implementation, describes the monitoring protocols, and provides a complete set of the data collected during the project. 25 references, 29 figures, 42 tables.

  10. Factors affecting the indoor concentrations of carbonaceous aerosols of outdoor origin

    SciTech Connect (OSTI)

    Lunden, Melissa M.; Kirchstetter, Thomas W.; Thatcher, Tracy L.; Hering, Susanne V.; Brown, Nancy J.

    2007-06-25

    A field study was conducted in an unoccupied single story residence in Clovis, California to provide data to address issues important to assess the indoor exposure to particles of outdoor origin. Measurements of black and organic carbonaceous aerosols were performed using a variety of methods, resulting in both near real-time measurements as well as integrated filter based measurements. Comparisons of the different measurement methods show that it is crucial to account for gas phase adsorption artifacts when measuring organic carbon (OC). Measured concentrations affected by the emissions of organic compounds sorbed to indoor surfaces imply a higher degree of infiltration of outdoor organic carbon aerosols into the indoor environment for our unoccupied house. Analysis of the indoor and outdoor data for black carbon (BC) aerosols show that, on average, the indoor concentration of black carbon aerosols behaves in a similar manner to sulfate aerosols. In contrast, organic carbon aerosols are subject to chemical transformations indoors that, for our unoccupied home, resulted in lower indoor OC concentrations than would be expected by physical loss mechanisms alone. These results show that gas to particle partitioning of organic compounds, as well as gas to surface interactions within the residence, are an important process governing the indoor concentration to OC aerosols of outdoor origin.

  11. Integrating Human Indoor Air Pollutant Exposure within Life Cycle Impact Assessment

    SciTech Connect (OSTI)

    Hellweg, Stefanie; Demou, Evangelia; Bruzzi, Raffaella; Meijer, Arjen; Rosenbaum, Ralph K.; Huijbregts, Mark A.J.; McKone, Thomas E.

    2008-12-21

    Neglecting health effects from indoor pollutant emissions and exposure, as currently done in Life Cycle Assessment (LCA), may result in product or process optimizations at the expense of workers? or consumers? health. To close this gap, methods for considering indoor exposure to chemicals are needed to complement the methods for outdoor human exposure assessment already in use. This paper summarizes the work of an international expert group on the integration of human indoor and outdoor exposure in LCA, within the UNEP/SETAC Life Cycle Initiative. A new methodological framework is proposed for a general procedure to include human-health effects from indoor exposure in LCA. Exposure models from occupational hygiene and household indoor air quality studies and practices are critically reviewed and recommendations are provided on the appropriateness of various model alternatives in the context of LCA. A single-compartment box model is recommended for use as a default in LCA, enabling one to screen occupational and household exposures consistent with the existing models to assess outdoor emission in a multimedia environment. An initial set of model parameter values was collected. The comparison between indoor and outdoor human exposure per unit of emission shows that for many pollutants, intake per unit of indoor emission may be several orders of magnitude higher than for outdoor emissions. It is concluded that indoor exposure should be routinely addressed within LCA.

  12. Science on the Hill: Turning windows into solar panels

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

    Harvesting that light with photovoltaic cells, which convert sunlight into electricity, at a cost-competitive price, however, has proved elusive. While the price of solar cells ...

  13. Indoor Radon and Its Decay Products: Concentrations, Causes, and Control Strategies

    SciTech Connect (OSTI)

    Nero, A.V.; Gadgil, A.J.; Nazaroff, W.W.; Revzan, K.L.

    1990-01-01

    This report is an introduction to the behavior of radon 222 and its decay products in indoor air. This includes review of basic characteristics of radon and its decay products and of features of the indoor environment itself, all of which factors affect behavior in indoor air. The experimental and theoretical evidence on behavior of radon and its decay products is examined, providing a basis for understanding the influence of geological, structural, and meteorological factors on indoor concentrations, as well as the effectiveness of control techniques. We go on to examine three important issues concerning indoor radon. We thus include (1) an appraisal of the concentration distribution in homes, (2) an examination of the utility and limitations of popular monitoring techniques and protocols, and (3) an assessment of the key elements of strategies for controlling radon levels in homes.

  14. Factors affecting the concentration of outdoor particles indoors (COPI): Identification of data needs and existing data

    SciTech Connect (OSTI)

    Thatcher, Tracy L.; McKone, Thomas E.; Fisk, William J.; Sohn, Michael D.; Delp, Woody W.; Riley, William J.; Sextro, Richard G.

    2001-12-01

    The process of characterizing human exposure to particulate matter requires information on both particle concentrations in microenvironments and the time-specific activity budgets of individuals among these microenvironments. Because the average amount of time spent indoors by individuals in the US is estimated to be greater than 75%, accurate characterization of particle concentrations indoors is critical to exposure assessments for the US population. In addition, it is estimated that indoor particle concentrations depend strongly on outdoor concentrations. The spatial and temporal variations of indoor particle concentrations as well as the factors that affect these variations are important to health scientists. For them, knowledge of the factors that control the relationship of indoor particle concentrations to outdoor levels is particularly important. In this report, we identify and evaluate sources of data for those factors that affect the transport to and concentration of outdoor particles in the indoor environment. Concentrations of particles indoors depend upon the fraction of outdoor particles that penetrate through the building shell or are transported via the air handling (HVAC) system, the generation of particles by indoor sources, and the loss mechanisms that occur indoors, such as deposition. To address these issues, we (i) identify and assemble relevant information including the behavior of particles during air leakage, HVAC operations, and particle filtration; (ii) review and evaluate the assembled information to distinguish data that are directly relevant to specific estimates of particle transport from those that are only indirectly useful and (iii) provide a synthesis of the currently available information on building air-leakage parameters and their effect on indoor particle matter concentrations.

  15. Combustion Safety for Appliances Using Indoor Air (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-05-01

    This measure guideline covers how to assess and carry out the combustion safety procedures for appliances and heating equipment that uses indoor air for combustion in low-rise residential buildings. Only appliances installed in the living space, or in an area freely communicating with the living space, vented alone or in tandem with another appliance are considered here. A separate measure guideline addresses combustion appliances located either within the living space in enclosed closets or side rooms or outside the living space in an adjacent area like an attic or garage that use outdoor air for combustion. This document is for inspectors, auditors, and technicians working in homes where energy upgrades are being conducted whether or not air infiltration control is included in the package of measures being applied. In the indoor combustion air case, guidelines summarized here are based on language provided in several of the codes to establish minimum requirements for the space using simplified prescriptive measures. In addition, building performance testing procedures are provided by testing agencies. The codes in combination with the test procedures offer comprehensive combustion safety coverage to address safety concerns, allowing inexperienced residential energy retrofit inspectors to effectively address combustion safety issues and allow energy retrofits to proceed.

  16. Turning Ideas into Impact: The Energy Department's Office of Technology

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

    Transitions | Department of Energy Ideas into Impact: The Energy Department's Office of Technology Transitions Turning Ideas into Impact: The Energy Department's Office of Technology Transitions December 8, 2015 - 9:05am Addthis Find out how we connect scientists with innovators and entrepreneurs, like the company who used the National Labs’ supercomputing power to model aerodynamics of long-haul trucks to improve efficiency. | Image by Oak Ridge National Laboratory Find out how we

  17. Analysis of the influence of tool dynamics in diamond turning

    SciTech Connect (OSTI)

    Fawcett, S.C.; Luttrell, D.E.; Keltie, R.F.

    1988-12-01

    This report describes the progress in defining the role of machine and interface dynamics on the surface finish in diamond turning. It contains a review of literature from conventional and diamond machining processes relating tool dynamics, material interactions and tool wear to surface finish. Data from experimental measurements of tool/work piece interface dynamics are presented as well as machine dynamics for the DTM at the Center.

  18. Alternative Fuels Data Center: Central Ohio Turns Trash Into Natural Gas

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Central Ohio Turns Trash Into Natural Gas to someone by E-mail Share Alternative Fuels Data Center: Central Ohio Turns Trash Into Natural Gas on Facebook Tweet about Alternative Fuels Data Center: Central Ohio Turns Trash Into Natural Gas on Twitter Bookmark Alternative Fuels Data Center: Central Ohio Turns Trash Into Natural Gas on Google Bookmark Alternative Fuels Data Center: Central Ohio Turns Trash Into Natural Gas on Delicious Rank Alternative Fuels Data Center: Central Ohio Turns Trash

  19. Problem Turned Into Performance for Solar Cells | U.S. DOE Office...

    Office of Science (SC) Website

    Problem Turned Into Performance for Solar Cells Basic Energy Sciences (BES) BES Home About ... Problem Turned Into Performance for Solar Cells Boundaries between crystalline grains - ...

  20. Commercial Lighting and LED Lighting Incentives | Department...

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

    Schools Institutional Savings Category Lighting Lighting ControlsSensors Other EE LED Lighting Maximum Rebate Up to 100% of cost; incentives that exceed 5,000 should be...

  1. Light's Darkness

    ScienceCinema (OSTI)

    Padgett, Miles [University of Glasgow, Glasgow, Scotland

    2010-01-08

    Optical vortices and orbital angular momentum are currently topical subjects in the optics literature. Although seemingly esoteric, they are, in fact, the generic state of light and arise whenever three or more plane waves interfere. To be observed by eye the light must be monochromatic. Laser speckle is one such example, where the optical energy circulates around each black spot, giving a local orbital angular momentum. This talk with report three on-going studies. First, when considering a volume of interfering waves, the laser specs map out threads of complete darkness embedded in the light. Do these threads form loops? Links? Or even knots? Second, when looking through a rapidly spinning window, the image of the world on the other side is rotated: true or false? Finally, the entanglement of orbital angular momentum states means measuring how the angular position of one photons sets the angular momentum of another: is this an angular version of the EPR (Einstein, Podolsky, and Rosen) paradox?

  2. Impacts of Mixing on Acceptable Indoor Air Quality in Homes

    SciTech Connect (OSTI)

    Sherman, Max H.; Walker, Iain I.

    2010-01-01

    Ventilation reduces occupant exposure to indoor contaminants by diluting or removing them. In a multi-zone environment such as a house, every zone will have different dilution rates and contaminant source strengths. The total ventilation rate is the most important factor in determining occupant exposure to given contaminant sources, but the zone-specific distribution of exhaust and supply air and the mixing of ventilation air can play significant roles. Different types of ventilation systems will provide different amounts of mixing depending on several factors such as air leakage, air distribution system, and contaminant source and occupant locations. Most U.S. and Canadian homes have central heating, ventilation, and air conditioning systems, which tend to mix the air; thus, the indoor air in different zones tends to be well mixed for significant fractions of the year. This article reports recent results of investigations to determine the impact of air mixing on exposures of residential occupants to prototypical contaminants of concern. We summarize existing literature and extend past analyses to determine the parameters than affect air mixing as well as the impacts of mixing on occupant exposure, and to draw conclusions that are relevant for standards development and for practitioners designing and installing home ventilation systems. The primary conclusion is that mixing will not substantially affect the mean indoor air quality across a broad population of occupants, homes, and ventilation systems, but it can reduce the number of occupants who are exposed to extreme pollutant levels. If the policy objective is to minimize the number of people exposed above a given pollutant threshold, some amount of mixing will be of net benefit even though it does not benefit average exposure. If the policy is to minimize exposure on average, then mixing air in homes is detrimental and should not be encouraged. We also conclude that most homes in the US have adequate mixing

  3. The effects of indoor pollution on Arizona children

    SciTech Connect (OSTI)

    Dodge, R.

    1982-05-01

    The respiratory health of a large group of Arizona school children who have been exposed to indoor pollutants-tobacco smoke and home cooking fumes-is reported. A significant relationship was found between parental smoking and symptoms of cough, wheeze, and sputum production. Also, children in homes where gas cooking fuel was used had higher rates of cough than children in homes where electricity was used. No differences in pulmonary function or yearly lung growth rates occurred among subjects grouped by exposure to tobacco smoke or cooking fuel. Thus, parental smoking and home cooking fuel affected cross-sectional respiratory symptom rates in a large group of Arizona school children. Study of pulmonary function, however, revealed no lung function or lung growth effects during 4 yr of study.

  4. Search of medical literature for indoor carbon monoxide exposure

    SciTech Connect (OSTI)

    Brennan, T.; Ivanovich, M.

    1995-12-01

    This report documents a literature search on carbon monoxide. The search was limited to the medical and toxicological databases at the National Library of Medicine (MEDLARS). The databases searched were Medline, Toxline and TOXNET. Searches were performed using a variety of strategies. Combinations of the following keywords were used: carbon, monoxide, accidental, residential, occult, diagnosis, misdiagnosis, heating, furnace, and indoor. The literature was searched from 1966 to the present. Over 1000 references were identified and summarized using the following abbreviations: The major findings of the search are: (1) Acute and subacute carbon monoxide exposures result in a large number of symptoms affecting the brain, kidneys, respiratory system, retina, and motor functions. (2) Acute and subacute carbon monoxide (CO) poisonings have been misdiagnosed on many occasions. (3) Very few systematic investigations have been made into the frequency and consequences of carbon monoxide poisonings.

  5. Indoor Air Quality and Ventilation in Residential Deep Energy Retrofits

    SciTech Connect (OSTI)

    Less, Brennan; Walker, Iain

    2014-06-01

    Because airtightening is a significant part of Deep Energy Retrofits (DERs), concerns about ventilation and Indoor Air Quality (IAQ) have emerged. To investigate this, ventilation and IAQ were assessed in 17 non-smoking California Deep Energy Retrofit homes. Inspections and surveys were used to assess household activities and ventilation systems. Pollutant sampling performed in 12 homes included six-day passive samples of nitrogen dioxide (NO2), formaldehyde and air exchange rate (AER); time-resolved data loggers were used to measure particle counts. Half of the homes provided continuous mechanical ventilation. Despite these homes being twice as airtight (3.0 and 7.6 ACH50, respectively), their median AER was indistinguishable from naturally vented homes (0.36 versus 0.37 hr--1). Numerous problems were found with ventilation systems; however, pollutant levels did not reach levels of concern in most homes. Ambient NO2 standards were exceeded in some gas cooking homes that used legacy ranges with standing pilots, and in Passive House-style homes without range hoods exhausted to outside. Cooking exhaust systems were installed and used inconsistently. The majority of homes reported using low-emitting materials, and formaldehyde levels were approximately half those in conventional new CA homes (19.7 versus 36 ?g/m3), with emissions rates nearly 40percent less (12.3 versus 20.6 ?g/m2/hr.). Presence of air filtration systems led to lower indoor particle number concentrations (PN>0.5: 8.80E+06 PN/m3 versus 2.99E+06; PN>2.5: 5.46E+0.5 PN/m3 versus 2.59E+05). The results indicate that DERs can provide adequate ventilation and IAQ, and that DERs should prioritize source control, particle filtration and well-designed local exhaust systems, while still providing adequate continuous ventilation.

  6. Meet a Machine: ATLAS turns NNSA operators into heavylifting heroes |

    National Nuclear Security Administration (NNSA)

    National Nuclear Security Administration | (NNSA) ATLAS turns NNSA operators into heavylifting heroes Thursday, July 14, 2016 - 10:27am The United States doesn't explosively test nuclear weapons, but NNSA is still charged with making sure the U.S. nuclear arsenal is safe and secure, and effective. This is why the U.S. nuclear security enterprise is home to the most brilliant minds and cutting-edge technologies for extreme physics and energy science. Learn about one of the members of NNSA's

  7. National Lighting Energy Consumption

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

    Lighting Energy National Lighting Energy Consumption Consumption 390 Billion kWh used for lighting in all 390 Billion kWh used for lighting in all commercial buildings in commercial buildings in 2001 2001 LED (<.1% ) Incandescent 40% HID 22% Fluorescent 38% Lighting Energy Consumption by Lighting Energy Consumption by Breakdown of Lighting Energy Breakdown of Lighting Energy Major Sector and Light Source Type Major Sector and Light Source Type Source: Navigant Consulting, Inc., U.S. Lighting

  8. Light Show

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

    9 Lightning - Nature's Light Show Lightning provides one of nature's most spectacular displays of energy. Though fascinating to observe, lightning can be dangerous and deadly. Protecting ARM instruments from lightning damage is vital. Putting equipment worth millions of dollars into open fields (Photo: NOAA) ARM Facilities Newsletter is published by Argonne National Laboratory, a multiprogram laboratory operated by The University of Chicago under contract W-31-109-Eng-38 with the U.S. Department

  9. Is CO2 an Indoor Pollutant? Direct Effects of Low to Moderate...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Is CO2 an Indoor Pollutant? Direct Effects of Low to Moderate CO2 ... Visit OSTI to utilize additional information resources in energy science and technology. A ...

  10. ASHRAE Standard 62.2. Ventilation and Acceptable Indoor Air Quality...

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

    a 50% reduction in building energy consumption. ASHRAE Standard 62.2. Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings (890.97 KB) More Documents & ...

  11. DOE ZERH Webinar: Ventilation and Filtration Strategies with Indoor airPLUS (Text Version)

    Office of Energy Efficiency and Renewable Energy (EERE)

    Below is the text version of the webinar, DOE Zero Energy Ready Home: Ventilation and Filtration Strategies with Indoor airPLUS, presented in August 2014. Watch the presentation.

  12. Method, system and apparatus for monitoring and adjusting the quality of indoor air

    DOE Patents [OSTI]

    Hartenstein, Steven D.; Tremblay, Paul L.; Fryer, Michael O.; Hohorst, Frederick A.

    2004-03-23

    A system, method and apparatus is provided for monitoring and adjusting the quality of indoor air. A sensor array senses an air sample from the indoor air and analyzes the air sample to obtain signatures representative of contaminants in the air sample. When the level or type of contaminant poses a threat or hazard to the occupants, the present invention takes corrective actions which may include introducing additional fresh air. The corrective actions taken are intended to promote overall health of personnel, prevent personnel from being overexposed to hazardous contaminants and minimize the cost of operating the HVAC system. The identification of the contaminants is performed by comparing the signatures provided by the sensor array with a database of known signatures. Upon identification, the system takes corrective actions based on the level of contaminant present. The present invention is capable of learning the identity of previously unknown contaminants, which increases its ability to identify contaminants in the future. Indoor air quality is assured by monitoring the contaminants not only in the indoor air, but also in the outdoor air and the air which is to be recirculated. The present invention is easily adaptable to new and existing HVAC systems. In sum, the present invention is able to monitor and adjust the quality of indoor air in real time by sensing the level and type of contaminants present in indoor air, outdoor and recirculated air, providing an intelligent decision about the quality of the air, and minimizing the cost of operating an HVAC system.

  13. Indoor Measurements of Environmental Tobacco Smoke Final Report to the Tobacco Related Disease Research Program

    SciTech Connect (OSTI)

    Apte, Michael G.; Gundel, Lara A.; Dod, Raymond L.; Russell, Marion L.; Singer, Brett C.; Sohn, Michael D.; Sullivan, Douglas P.; Chang, Gee-Minn; Sextro, Richard G.

    2004-03-02

    The objective of this research project was to improve the basis for estimating environmental tobacco smoke (ETS) exposures in a variety of indoor environments. The research utilized experiments conducted in both laboratory and ''real-world'' buildings to (1) study the transport of ETS species from room to room, (2) examine the viability of using various chemical markers as tracers for ETS, and (3) to evaluate to what extent re-emission of ETS components from indoor surfaces might add to the ETS exposure estimates. A three-room environmental chamber was used to examine multi-zone transport and behavior of ETS and its tracers. One room (simulating a smoker's living room) was extensively conditioned with ETS, while a corridor and a second room (simulating a child's bedroom) remained smoking-free. A series of 5 sets of replicate experiments were conducted under different door opening and flow configurations: sealed, leaky, slightly ajar, wide open, and under forced air-flow conditions. When the doors between the rooms were slightly ajar the particles dispersed into the other rooms, eventually reaching the same concentration. The particle size distribution took the same form in each room, although the total numbers of particles in each room depended on the door configurations. The particle number size distribution moved towards somewhat larger particles as the ETS aged. We also successfully modeled the inter-room transport of ETS particles from first principles--using size fractionated particle emission factors, predicted deposition rates, and thermal temperature gradient driven inter-room flows, This validation improved our understanding of bulk inter-room ETS particle transport. Four chemical tracers were examined: ultraviolet-absorbing particulate matter (UVPM), fluorescent particulate matter (FPM), nicotine and solanesol. Both (UVPM) and (FPM) traced the transport of ETS particles into the non-smoking areas. Nicotine, on the other hand, quickly adsorbed on

  14. CALiPER Snapshot Report: Indoor LED Luminaires

    SciTech Connect (OSTI)

    2014-04-01

    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.

  15. Wireless Occupancy Sensors for Lighting Controls: An Applications Guide for Federal Facility Managers

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

    Occupancy Sensor Lighting Energy Savings 2 Breakroom 29% Classroom 40-46% Conference Room Corridor 30-80% Office, Private 13-50% Office, Open Restroom 30-90% Storage Area 45-80% Warehouse 35-54% 45% 10% How Much Can You Expect to Save When You Install Occupancy Sensor Lighting Controls in These Rooms? Occupancy sensors increase lighting energy savings by turning off or turning down the lights when rooms are unoccupied. Lighting energy savings of 10% to 90% are possible depending on room usage.

  16. Indoor-Outdoor Air Leakage of Apartments and Commercial Buildings

    SciTech Connect (OSTI)

    Price, P.N.; Shehabi, A.; Chan, R.W.; Gadgil, A.J.

    2006-06-01

    We compiled and analyzed available data concerning indoor-outdoor air leakage rates and building leakiness parameters for commercial buildings and apartments. We analyzed the data, and reviewed the related literature, to determine the current state of knowledge of the statistical distribution of air exchange rates and related parameters for California buildings, and to identify significant gaps in the current knowledge and data. Very few data were found from California buildings, so we compiled data from other states and some other countries. Even when data from other developed countries were included, data were sparse and few conclusive statements were possible. Little systematic variation in building leakage with construction type, building activity type, height, size, or location within the u.s. was observed. Commercial buildings and apartments seem to be about twice as leaky as single-family houses, per unit of building envelope area. Although further work collecting and analyzing leakage data might be useful, we suggest that a more important issue may be the transport of pollutants between units in apartments and mixed-use buildings, an under-studied phenomenon that may expose occupants to high levels of pollutants such as tobacco smoke or dry cleaning fumes.

  17. Indoor nitrogen dioxide in five Chattangooga, Tennessee public housing developments

    SciTech Connect (OSTI)

    Parkhurst, W.J.; Harper, J.P. ); Spengler, J.D.; Fraumeni, L.P.; Majahad, A.M. ); Cropp, J.W. )

    1988-01-01

    This report summarizes an indoor nitrogen dioxide (NO{sub 2}) sampling study conducted during January through March of 1987 in five Chattanooga public housing developments. The origins of this study date to the summer of 1983 when the Piney Woods Community Organization (a citizens action group) expressed concern about toxic industrial air pollution and the effects it might have on their community. In response to these concerns, the Chattanooga-Hamilton County Air Pollution Control Bureau (Bureau) requested assistance from the Tennessee Department of Health and Environment (TDHE) in conducting a community health survey and assistance from the Tennessee Valley Authority (TVA) in conducting a community air quality measurement program. The TDHE community health study did not find any significant differences between the mortality statistics for the Piney Woods community and a demographically similar control group. However, a health survey revealed that Piney Woods residents did not have a statistically significant higher self-reported prevalence of cough, wheezing, phlegm, breathlessness, colds, and respiratory illness.

  18. Energy and indoor environmental quality in relocatable classrooms

    SciTech Connect (OSTI)

    Apte, Michael; Hodgson, Alfred; Shendell, Derek; Dibartolomeo, Dennis; Hochi, Toshifumi; Kumar, Satish; Lee, Seung-Min; Liff, Shawna; Rainer, Leo; Schmidt, Richard; Sullivan, Douglas; Diamond, Richard; Fisk, William

    2002-02-01

    Relocatable classrooms (RCs) are commonly utilized by school districts with changing demographics and enrollment sizes. Four energy-efficient RCs were designed and constructed for this study to demonstrate technologies that simultaneously attempt to improve energy efficiency and indoor environmental quality (IEQ). Two were installed at each of two school districts, and energy use and IEQ parameters were monitored during occupancy. Two (one per school) were finished with materials selected for reduced emissions of toxic and odorous volatile organic compounds (VOCs). Each RC had two HVAC systems, alternated weekly, consisting of a standard heat-pump system and an indirect-direct evaporative cooling (IDEC) system with gas-fired hydronic heating. The hypothesized advantages of the IDEC include continuous outside air ventilation at {ge}7.5 L s{sup -1} per person, {approx}70% less cooling energy and efficient particle filtration. Measurements include: carbon dioxide, particles, VOCs, temperature, humidity, thermal comfort, noise, meteorology, and energy use. Preliminary IEQ monitoring results are reported.

  19. Reading Municipal Light Department - Business Lighting Rebate...

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

    with Electronic Ballasts: 100fixture De-lamping: 4 - 9lamp Lighting Sensors: 20sensor LED Exit Signs: 20fixture Summary Reading Municipal Light Department (RMLD) offers...

  20. White Light Creation Architectures

    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 ... White Light Creation Architectures HomeEnergy ResearchEFRCsSolid-State Lighting Science ...

  1. Light Creation Materials

    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 ... Light Creation Materials HomeEnergy ResearchEFRCsSolid-State Lighting Science EFRC...

  2. light-emitting diode

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

    ... Cost The high-brightness, rapidly pulsed, multicolor light-emitting diode (LED) driver delivers lighting performance that exceeds that of conventional (laserarc-light) sources ...

  3. Indoor climate and moisture durability performances of houses with unvented attic roof constructions in a mixed-humid climate.

    SciTech Connect (OSTI)

    Pallin, Simon B.; Boudreaux, Philip R.; Jackson, Roderick K.

    2014-10-01

    A sealed or unvented attic is an energy-efficient envelope component that can reduce the amount of energy a house consumes for space conditioning if the air handler and/or ducts are located in the attic. The attic is typically sealed by using spray foam on the underside of the roof deck and covering the soffit, ridge and gable vents to minimize air leakage from the attic to the outside. This approach can save up to 10% in space-conditioning energy when ducts are located in the attic (DOE 2013). Past research done by ORNL and Florida Solar Energy Center suggests that in more hot, humid climates, an unvented attic could potentially create a more humid, uncomfortable living environment than a vented attic (Colon 2011, Boudreaux, Pallin et al. 2013). Research showed that controlling the higher indoor humidity could reduce the energy savings from the sealed, unvented attic, which in turn would decrease the energy savings payback. Research also showed that the roof assembly (5.5 inches of open-cell foam, 1inch of closed-cell foam, OSB, felt paper, and asphalt shingles) stored moisture, thus acting as a moisture buffer. During the fall and winter, the roof assembly stored moisture and during the spring and summer it released moisture. This phenomenon is not seen in a vented attic, in which the air exchange rate to the outside is greater and, in the winter, helps to dehumidify the attic air. It was also seen that in a vented attic, the direction of water vapor diffusion is on average from the attic to the interior of the house. Air leakage from the attic to the interior also occurs during more of the year in a house with an unvented attic than in one with a vented attic. These discoveries show that the moisture dynamics in a house with an unvented attic are much different from those in a house with a vented attic. This study reports on a series of computer model investigations completed to determine the key variables impacting indoor comfort and the durability of roof

  4. Los Alamos turns its nuclear weapons power to war on cancer

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

    Los Alamos turns its nuclear weapons power to war on cancer Los Alamos turns its nuclear weapons power to war on cancer Los Alamos Physicist Eva Birnbaum shows how the laboratory ...

  5. Property Transfer or Turn In Form, HQ F 1400.18 | Department of Energy

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

    Property Transfer or Turn In Form, HQ F 1400.18 Property Transfer or Turn In Form, HQ F 1400.18 Property Transfer or Turn In Form, HQ F 1400.18 Property Transfer or Turn In Form, HQ F 1400.18 (63.58 KB) More Documents & Publications DOE HQ F 1400.18 DOE F 1400.8 DOE HQ F 580

  6. AutoGrid - Turning Big Data Into Power with the Energy Data Platform and Apps

    SciTech Connect (OSTI)

    Narayan, Amit; Dresselhuys, Eric; Kulp, Yann; Buseman, Greg; Piette, Mary Ann; Tang, Andrew; Dailey, Karla; Knudsen, Chris

    2014-03-25

    AutoGrid personnel discuss how they are turning big data into power with the energy data platform and apps.

  7. TEXT-ALTERNATIVE VERSION: NEXT GENERATION LUMINAIRES INDOOR JUDGING 2014

    Broader source: Energy.gov [DOE]

    Dan Blitzer, NGL Steering Committee, The Practical Lighting Workshop: Products that have been evaluated by the Next Generation Luminaires Design Competition have been vetted to a degree that no...

  8. Numerical simulation of solar heat absorption within indoor space by means of composite grid method

    SciTech Connect (OSTI)

    Omori, Toshiaki; Murakami, Shuzo; Kato, Shinsuke

    1997-12-31

    This paper describes the method for numerical simulation of solar radiation entering indoor spaces through fenestration. The proposed method can systematically deal with the interception of sunlight by buildings in the outdoor space and obstacles in the indoor space by tracing a large number of particles directed toward the sun. Configuration factors from the fenestration to the sky are also three-dimensionally treated by accounting for outdoor geometries. Distribution of the solar heat absorption in the indoor space is calculated by assuming radiation equilibrium. After the solar heat absorption analysis is carried out, heat transfer analysis in the space is conducted taking account of longwave radiation, convective heat transfer, thermal conduction, and cooling/heating by air conditioning. Then, the indoor thermal environment is evaluated using the resulting temperature distribution of air and indoor surfaces. To evaluate the applicability of these procedures, the thermal environment in a model hall with large glass windows and an overhang is predicted. The analyzed hall is assumed to be located near a tall building.

  9. Ventilation System Effectiveness and Tested Indoor Air Quality Impacts

    SciTech Connect (OSTI)

    Rudd, Armin; Bergey, Daniel

    2014-02-01

    In this project, Building America research team Building Science Corporation tested the effectiveness of ventilation systems at two unoccupied, single-family, detached lab homes at the University of Texas - Tyler. Five ventilation system tests were conducted with various whole-building ventilation systems. Multizone fan pressurization testing characterized building and zone enclosure leakage. PFT testing showed multizone air change rates and interzonal airflow. Cumulative particle counts for six particle sizes, and formaldehyde and other Top 20 VOC concentrations were measured in multiple zones. The testing showed that single-point exhaust ventilation was inferior as a whole-house ventilation strategy. This was because the source of outside air was not direct from outside, the ventilation air was not distributed, and no provision existed for air filtration. Indoor air recirculation by a central air distribution system can help improve the exhaust ventilation system by way of air mixing and filtration. In contrast, the supply and balanced ventilation systems showed that there is a significant benefit to drawing outside air from a known outside location, and filtering and distributing that air. Compared to the exhaust systems, the CFIS and ERV systems showed better ventilation air distribution and lower concentrations of particulates, formaldehyde and other VOCs. System improvement percentages were estimated based on four system factor categories: balance, distribution, outside air source, and recirculation filtration. Recommended system factors could be applied to reduce ventilation fan airflow rates relative to ASHRAE Standard 62.2 to save energy and reduce moisture control risk in humid climates. HVAC energy savings were predicted to be 8-10%, or $50-$75/year.

  10. Ventilation System Effectiveness and Tested Indoor Air Quality Impacts

    SciTech Connect (OSTI)

    Rudd, A.; Bergey, D.

    2014-02-01

    Ventilation system effectiveness testing was conducted at two unoccupied, single-family, detached lab homes at the University of Texas - Tyler. Five ventilation system tests were conducted with various whole-building ventilation systems. Multizone fan pressurization testing characterized building and zone enclosure leakage. PFT testing showed multizone air change rates and interzonal airflow. Cumulative particle counts for six particle sizes, and formaldehyde and other Top 20 VOC concentrations were measured in multiple zones. The testing showed that single-point exhaust ventilation was inferior as a whole-house ventilation strategy. It was inferior because the source of outside air was not direct from outside, the ventilation air was not distributed, and no provision existed for air filtration. Indoor air recirculation by a central air distribution system can help improve the exhaust ventilation system by way of air mixing and filtration. In contrast, the supply and balanced ventilation systems showed that there is a significant benefit to drawing outside air from a known outside location, and filtering and distributing that air. Compared to the Exhaust systems, the CFIS and ERV systems showed better ventilation air distribution and lower concentrations of particulates, formaldehyde and other VOCs. System improvement percentages were estimated based on four System Factor Categories: Balance, Distribution, Outside Air Source, and Recirculation Filtration. Recommended System Factors could be applied to reduce ventilation fan airflow rates relative to ASHRAE Standard 62.2 to save energy and reduce moisture control risk in humid climates. HVAC energy savings were predicted to be 8-10%, or $50-$75/year.

  11. Energy management system turns data into market info

    SciTech Connect (OSTI)

    Traynor, P.J.; Ackerman, W.J.

    1996-09-01

    The designers claim that Wisconsin Power & Light Co`s new energy management system is the first system of its type in the world in terms of the comprehensiveness and scope of its stored and retrievable data. Furthermore, the system`s link to the utility`s generating assets enables powerplant management to dispatch generation resources based on up-to-date unit characteristics. That means that the new system gives WP&L a competitive tool to optimize operations as well as fine-tune its EMS based on timely load and unit response information. Additionally, the EMS gives WP&L insight into the complex issues related to the unbundling of generation resources.

  12. I/O values for determination of the origin of some indoor organic pollutants

    SciTech Connect (OSTI)

    Otson, R.; Zhu, J.

    1997-12-31

    To reduce human health risks resulting from exposure to toxic chemicals, it is important to determine the origin of such substances. The ratio (I/O) of indoor to outdoor concentrations of selected airborne vapor phase organic compounds (VPOC) was used to estimate the contribution of indoor sources to levels of the compounds in the air of 44 homes selected randomly in the Greater Toronto Area (GTA). Average I/O values for all of the homes were greater 1.5 for 10 of the 20 detected target compounds, and it could be concluded that indoor VPOC sources had a greater impact on indoor air quality than outdoor air in these instances. A significant finding, which aptly demonstrates the importance of indoor sources and pollution, was the overall I/O value of 5.2 for the 44 representative GTA homes. Possible indoor sources for most of the 10 compounds could be identified, based on information collected by means of a questionnaire, as well as from the scientific literature. However, possible sources for some compounds could not be determined as readily, probably because of the presence of multiple sources, and sources which had not been previously noted, such as foods and beverages. The sensitivity of I/O values to various factors (e.g., source strength, air exchange rates, precision of measurements, unanticipated sources), and the reliability of determining the origin of pollutants by use of I/O values alone were examined, with some examples. If used judiciously, the I/O value can be a useful tool for IAQ investigations.

  13. JV Task 86 - Identifying the Source of Benzene in Indoor Air Using Different Compound Classes from TO-15 Data

    SciTech Connect (OSTI)

    Steven B. Hawthorne

    2007-04-15

    Volatile organic compound (VOC) data that had already been collected using EPA method TO-15 at four different sites under regulatory scrutiny (a school, strip mall, apartment complex, and business/residential neighborhood) were evaluated to determine whether the source of indoor air benzene was outdoor air or vapor intrusion from contaminated soil. Both the use of tracer organics characteristic of different sources and principal component statistical analysis demonstrated that the source of indoor air at virtually all indoor sampling locations was a result of outdoor air, and not contaminated soil in and near the indoor air-sampling locations. These results show that proposed remediation activities to remove benzene-contaminated soil are highly unlikely to reduce indoor air benzene concentrations. A manuscript describing these results is presently being prepared for submission to a peer-reviewed journal.

  14. Validation of a zero-equation turbulence model for complex indoor airflow simulation

    SciTech Connect (OSTI)

    Srebric, J.; Chen, Q.; Glicksman, L.R.

    1999-07-01

    The design of an indoor environment requires a tool that can quickly predict the three-dimensional distributions of air velocity, temperature, and contaminant concentrations in the room on a desktop computer. This investigation has tested a zero-equation turbulence model for the prediction of the indoor environment in an office with displacement ventilation, with a heater and infiltration and with forced convection and a partition wall. The computed air velocity and temperature distributions agree well with the measured data. The computing time for each case is less than seven minutes on a PC Pentium II, 350 MHz.

  15. 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.

  16. A scoping study on the costs of indoor air quality illnesses:an insurance loss reduction perspective

    SciTech Connect (OSTI)

    Chen, Allan; Vine, Edward L.

    1998-08-31

    The incidence of commercial buildings with poor indoor air quality (IAQ), and the frequency of litigation over the effects of poor IAQ is increasing. If so, these increases have ramifications for insurance carriers, which pay for many of the costs of health care and general commercial liability. However, little is known about the actual costs to insurance companies from poor IAQ in buildings. This paper reports on the results of a literature search of buildings-related, business and legal databases, and interviews with insurance and risk management representatives aimed at finding information on the direct costs to the insurance industry of poor building IAQ, as well as the costs of litigation. The literature search and discussions with insurance and risk management professionals reported in this paper turned up little specific information about the costs of IAQ-related problems to insurance companies. However, those discussions and certain articles in the insurance industry press indicate that there is a strong awareness and growing concern over the "silent crisis" of IAQ and its potential to cause large industry losses, and that a few companies are taking steps to address this issue. The source of these losses include both direct costs to insurers from paying health insurance and professional liability claims, as weIl as the cost of litigation. In spite of the lack of data on how IAQ-related health problems affect their business, the insurance industry has taken the anecdotal evidence about their reality seriously enough to alter their policies in ways that have lessened their exposure. We conclude by briefly discussing four activities that need to be addressed in the near future: (1) quantifying IAQ-related insurance costs by sector, (2) educating the insurance industry about the importance of IAQ issues, (3) examining IAQ impacts on the insurance industry in the residential sector, and (4) evaluating the relationship between IAQ improvements and their impact on

  17. DOE Will Dispose of 34 Metric Tons of Plutonium by Turning it into Fuel for

    National Nuclear Security Administration (NNSA)

    Civilian Reactors | National Nuclear Security Administration | (NNSA) Will Dispose of 34 Metric Tons of Plutonium by Turning it into Fuel for Civilian Reactors DOE Will Dispose of 34 Metric Tons of Plutonium by Turning it into Fuel for Civi Washington, DC Secretary Abraham announced that DOE will dispose of 34 metric tons of surplus weapons grade plutonium by turning the material into mixed oxide fuel (MOX) for use in nuclear reactors. The decision follows an exhaustive Administration review

  18. Los Alamos turns its nuclear weapons power to war on cancer

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

    Los Alamos turns its nuclear weapons power to war on cancer Los Alamos turns its nuclear weapons power to war on cancer Los Alamos Physicist Eva Birnbaum shows how the laboratory is manufacturing a radioactive treatment that targets tumors, without killing the surrounding healthy tissue. December 20, 2015 Los Alamos physicist Eva Birnbaum Los Alamos physicist Eva Birnbaum Los Alamos turns its nuclear weapons power to war on cancer NBC News got exclusive access to Los Alamos National Laboratory

  19. Assessment of Indoor Air Quality Benefits and Energy Costs of Mechanical Ventilation

    SciTech Connect (OSTI)

    Logue, J.M.; Price, P.N.; Sherman, M.H.; Singer, B.C.

    2011-07-01

    Intake of chemical air pollutants in residences represents an important and substantial health hazard. Sealing homes to reduce air infiltration can save space conditioning energy, but can also increase indoor pollutant concentrations. Mechanical ventilation ensures a minimum amount of outdoor airflow that helps reduce concentrations of indoor emitted pollutants while requiring some energy for fan(s) and thermal conditioning of the added airflow. This work demonstrates a physics based, data driven modeling framework for comparing the costs and benefits of whole-house mechanical ventilation and applied the framework to new California homes. The results indicate that, on a population basis, the health benefits from reduced exposure to indoor pollutants in New California homes are worth the energy costs of adding mechanical ventilation as specified by ASHRAE Standard 62.2.This study determines the health burden for a subset of pollutants in indoor air and the costs and benefits of ASHRAE's mechanical ventilation standard (62.2) for new California homes. Results indicate that, on a population basis, the health benefits of new home mechanical ventilation justify the energy costs.

  20. Weatherization and Indoor Air Quality: Measured Impacts in Single Family Homes Under the Weatherization Assistance Program

    SciTech Connect (OSTI)

    Pigg, Scott; Cautley, Dan; Francisco, Paul; Hawkins, Beth A; Brennan, Terry M

    2014-09-01

    This report summarizes findings from a national field study of indoor air quality parameters in homes treated under the Weatherization Assistance Program (WAP). The study involved testing and monitoring in 514 single-family homes (including mobile homes) located in 35 states and served by 88 local weatherization agencies.

  1. Comfort, Indoor Air Quality, and Energy Consumption in Low Energy Homes

    SciTech Connect (OSTI)

    Englemann, P.; Roth, K.; Tiefenbeck, V.

    2013-01-01

    This report documents the results of an in-depth evaluation of energy consumption and thermal comfort for two potential net zero-energy homes (NZEHs) in Massachusetts, as well as an indoor air quality (IAQ) evaluation performed in conjunction with Lawrence Berkeley National Laboratory (LBNL).

  2. Prospects for LED lighting.

    SciTech Connect (OSTI)

    Tsao, Jeffrey Yeenien; Gee, James Martin; Simmons, Jerry Alvon

    2003-08-01

    Solid-state lighting using light-emitting diodes (LEDs) has the potential to reduce energy consumption for lighting by 50% while revolutionizing the way we illuminate our homes, work places, and public spaces. Nevertheless, substantial technical challenges remain in order for solid-state lighting to significantly displace the well-developed conventional lighting technologies. We review the potential of LED solid-state lighting to meet the long-term cost goals.

  3. Efficiency of static core turn-off in a system-on-a-chip with variation

    DOE Patents [OSTI]

    Cher, Chen-Yong; Coteus, Paul W; Gara, Alan; Kursun, Eren; Paulsen, David P; Schuelke, Brian A; Sheets, II, John E; Tian, Shurong

    2013-10-29

    A processor-implemented method for improving efficiency of a static core turn-off in a multi-core processor with variation, the method comprising: conducting via a simulation a turn-off analysis of the multi-core processor at the multi-core processor's design stage, wherein the turn-off analysis of the multi-core processor at the multi-core processor's design stage includes a first output corresponding to a first multi-core processor core to turn off; conducting a turn-off analysis of the multi-core processor at the multi-core processor's testing stage, wherein the turn-off analysis of the multi-core processor at the multi-core processor's testing stage includes a second output corresponding to a second multi-core processor core to turn off; comparing the first output and the second output to determine if the first output is referring to the same core to turn off as the second output; outputting a third output corresponding to the first multi-core processor core if the first output and the second output are both referring to the same core to turn off.

  4. Fact #732: June 18, 2012 Days to Turn Trend by Vehicle Class | Department

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

    of Energy 2: June 18, 2012 Days to Turn Trend by Vehicle Class Fact #732: June 18, 2012 Days to Turn Trend by Vehicle Class "Days to turn" is an automotive industry term that refers to the number of days that vehicles stay in dealer inventories before they are sold (i.e., the time a vehicle stays on the dealer's lot). There are many factors that influence this number including fuel prices, the economy, and supply disruptions. The figure below shows that the days to turn by vehicle

  5. Turning Down the Heat on Carbon | U.S. DOE Office of Science...

    Office of Science (SC) Website

    Unusual reaction eschews high temperatures and water to lock away climate-changing carbon ... relatively low temperatures and recycles water as it turns carbon dioxide into a solid ...

  6. Turn Down the Heat: Why a 4C Warmer World Must Be Avoided ...

    Open Energy Info (EERE)

    sitesdefaultfilesTurnDowntheheatWhy Transport Toolkit Region(s): Global This report provides a snapshot of recent scientific literature and new analyses of...

  7. LED Street Lighting

    Energy Savers [EERE]

    1, 2016 LED Street Lighting The American Medical Association's (AMA) recently adopted community guidance on street lighting adds another influential voice to issues that have been ...

  8. Lighting Developments to 2030

    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 ... Twitter Google + Vimeo Newsletter Signup SlideShare Lighting Developments to 2030 Home...

  9. Lighting in Commercial Buildings

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

    more comprehensive understanding of commercial lighting and the potential for lighting energy savings. Steps to build on this analysis can be taken in many directions. One...

  10. 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

  11. 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...

  12. 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...

  13. Lighting in Commercial Buildings

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

    Motivation and Computation of Lighting Measures Floorspace by Lighting Equipment Configuration As described in Appendix A, for each building b, the CBECS data set has the total...

  14. 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.

  15. Leavenworth Tree Lighting

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

    Join HERO for our annual Leavenworth Tree Lighting Ceremony & Shopping SATURDAY DECEMBER 12, 2015 Leavenworth Christmas Lighting Festival Visitors return year after year for some...

  16. Tips: Shopping for Lighting

    Broader source: Energy.gov [DOE]

    When shopping for lighting, you can now use the Lighting Facts label and lumens to compare bulbs and purchase a bulb with the amount of brightness you want.

  17. 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...

  18. Light Duty Combustion Research: Advanced Light-Duty Combustion...

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

    Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments 2009 DOE Hydrogen Program and ...

  19. Solid-State Lighting-Lighting Facts | Department of Energy

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

    Lighting Facts Solid-State Lighting-Lighting Facts Presenter: Marc Ledbetter, Pacific Northwest National Laboratory The LED Lighting Facts program provides credible, verified ...

  20. Cree LED Lighting Solutions Formerly LED Lighting Fixtures LLF...

    Open Energy Info (EERE)

    LED Lighting Solutions Formerly LED Lighting Fixtures LLF Jump to: navigation, search Name: Cree LED Lighting Solutions (Formerly LED Lighting Fixtures (LLF)) Place: Morrisville,...

  1. 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

  2. Energy Department’s Interior Lighting Campaign nets $13.5 million in energy savings in first year; Green Lease Leaders add 1 billion square feet of commercial building space

    Broader source: Energy.gov [DOE]

    The Energy Department today announced the results of this year’s Better Buildings Alliance technology and market campaigns. Through partnerships with public and private sector organizations, the U.S. Department of Energy (DOE) is working with interested landlords, tenants, and owners to adopt solutions that best meet the needs of their buildings for sustainable leasing and upgrades to indoor lighting.

  3. Pedestrian Friendly Outdoor Lighting

    SciTech Connect (OSTI)

    Miller, N. J.; Koltai, R. N.; McGowan, T. K.

    2013-12-01

    The GATEWAY program followed two pedestrian-scale lighting projects that required multiple mockups – one at Stanford University in California and the other at Chautauqua Institution in upstate New York. The report provides insight into pedestrian lighting criteria, how they differ from street and area lighting criteria, and how solid-state lighting can be better applied in pedestrian applications.

  4. National Weatherization Assistance Program Impact Evaluation: Impact of Exhaust-Only Ventilation on Radon and Indoor Humidity - A Field Investigation

    SciTech Connect (OSTI)

    Pigg, Scott

    2014-09-01

    The study described here sought to assess the impact of exhaust-only ventilation on indoor radon and humidity in single-family homes that had been treated by the Weatherization Assistance Program (WAP).

  5. Very low temperature radiant heating/cooling indoor end system for efficient use of renewable energies

    SciTech Connect (OSTI)

    Ren, Jianbo; Wang, Yiping; Wang, Congrong; Xiong, Weicheng; Zhu, Li

    2010-06-15

    Solar or solar-assisted space heating systems are becoming more and more popular. The solar energy utilization efficiency is high when the collector is coupled with indoor radiant heating suppliers, since in principle, lower supply temperature means lower demand temperature and then the system heat loss is less. A new type radiant end system is put forward for even lower supply temperature compared to the conventional radiant floor heating systems. A three dimensional model was established to investigate its energy supply capacities. Simulation results show that 50 W per meter length tube can be achieved with the medium temperature of 30 C for heating and 15 C for cooling. The predicted results agree well with the actual data from a demonstration building. Furthermore, it is demonstrated that a supply temperature of 22 C in winter and of 17 C in summer already met the indoor requirements. The new end system has good prospects for effective use of local renewable resources. (author)

  6. EERE Success Story-Uncle Sam Turns to SAM for Solar Modeling | Department

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

    of Energy Uncle Sam Turns to SAM for Solar Modeling EERE Success Story-Uncle Sam Turns to SAM for Solar Modeling July 9, 2015 - 11:15am Addthis EERE Success Story—Uncle Sam Turns to SAM for Solar Modeling When it comes to making performance predictions and cost-of-energy estimates for grid-connected power projects, you can trust SAM to make it happen. SAM, or the System Advisor Model, is a performance and financial analysis tool funded by the SunShot Initiative that was built based on

  7. United States Office of Radiation and EP A Environmental Protection Indoor Air August 1997

    Office of Legacy Management (LM)

    EP A Environmental Protection Indoor Air August 1997 Agency Washington, DC 20460 EPA-402-R-97-015 GEPA Offsite Environmental RECEIVED Monitoring Report , , , , , , 0 . S T I Radiation Monitoring Around United States Nuclear Test Areas, Calendar Year 1996 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Governrnent. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied,

  8. Indoor Air Quality in 24 California Residences Designed as High-Performance Homes

    SciTech Connect (OSTI)

    Less, Brennan; Mullen, Nasim; Singer, Brett; Walker, Iain

    2015-07-01

    Today’s high performance green homes are reaching previously unheard of levels of airtightness and are using new materials, technologies and strategies, whose impacts on Indoor Air Quality (IAQ) cannot be fully anticipated from prior studies. This research study used pollutant measurements, home inspections, diagnostic testing and occupant surveys to assess IAQ in 24 new or deeply retrofitted homes designed to be high performance green buildings in California.

  9. 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....

  10. Indoor risk factors for cough and their relation to wheeze and sensitization in Chilean young adults

    SciTech Connect (OSTI)

    Potts, J.F.; Rona, R.J.; Oyarzun, M.J.; Amigo, H.; Bustos, P.

    2008-04-15

    We assessed the effects of indoor risk factors, including smoking, on different types of cough and on cough and wheeze in combination. Our sample was composed of 1232 men and women residing in a semi-rural area of Chile. We used a standardized questionnaire, sensitization to 8 allergens, and bronchial hyperresponsiveness to methacholine to assess cough and wheeze characteristics. Information was gathered on dampness, mold, ventilation, heating, housing quality, smoking, and environmental tobacco smoke exposure. Most exposures were associated with cough alone or cough in combination with wheeze. Smoking, past smoking, and environmental tobacco smoke exposure were strongly associated with dry cough and wheeze. The use of coal for heating was associated with dry cough. Leaks, mold, and lack of kitchen ventilation were associated with cough and wheeze. Nocturnal cough and productive cough were associated with specific types of sensitization, but dry cough was not. Productive cough was associated with hyperresponsiveness to methacholine. Several different types of indoor exposures, including environmental tobacco smoke exposure, are important contributors to morbidity associated with cough and wheeze. A vigorous preventive strategy designed to lower exposures to indoor risk factors would lower rates of respiratory morbidity.

  11. Association of indoor nitrogen dioxide with respiratory symptoms and pulmonary function in children

    SciTech Connect (OSTI)

    Neas, L.M.; Dockery, D.W.; Ware, J.H.; Spengler, J.D.; Speizer, F.E.; Ferris, B.G. Jr. )

    1991-07-15

    The effect of indoor nitrogen dioxide on the cumulative incidence of respiratory symptoms and pulmonary function level was studied in a cohort of 1,567 white children aged 7-11 years examined in six US cities from 1983 through 1988. Week-long measurements of nitrogen dioxide were obtained at three indoor locations over 2 consecutive weeks in both the winter and the summer months. The household annual average nitrogen dioxide concentration was modeled as a continuous variable and as four ordered categories. Multiple logistic regression analysis of symptom reports from a questionnaire administered after indoor monitoring showed that a 15-ppb increase in the household annual nitrogen dioxide mean was associated with an increased cumulative incidence of lower respiratory symptoms (odds ratio (OR) = 1.4, 95% confidence interval (95% Cl) 1.1-1.7). The response variable indicated the report of one or more of the following symptoms: attacks of shortness of breath with wheeze, chronic wheeze, chronic cough, chronic phlegm, or bronchitis. Girls showed a stronger association (OR = 1.7, 95% Cl 1.3-2.2) than did boys (OR = 1.2, 95% Cl 0.9-1.5). An analysis of pulmonary function measurements showed no consistent effect of nitrogen dioxide. These results are consistent with earlier reports based on categorical indicators of household nitrogen dioxide sources and provide a more specific association with nitrogen dioxide as measured in children's homes.

  12. Respiratory health effects of the indoor environment in a population of Dutch children

    SciTech Connect (OSTI)

    Dijkstra, L.; Houthuijs, D.; Brunekreef, B.; Akkerman, I.; Boleij, J.S. )

    1990-11-01

    The effect of indoor exposure to nitrogen dioxide on respiratory health was studied over a period of 2 yr in a population of nonsmoking Dutch children 6 to 12 yr of age. Lung function was measured at the schools, and information on respiratory symptoms was collected from a self-administered questionnaire completed by the parents of the children. Nitrogen dioxide was measured in the homes of all children with Palmes' diffusion tubes. In addition, information on smoking and dampness in the home was collected by questionnaire. There was no relationship between exposure to nitrogen dioxide in the home and respiratory symptoms. Respiratory symptoms were found to be associated with exposure to tobacco smoke and home dampness. There was a weak, negative association between maximal midexpiratory flow (MMEF) and exposure to nitrogen dioxide. FEV1, peak expiratory flow, and MMEF were all negatively associated with exposure to tobacco smoke. Home dampness was not associated with pulmonary function. Lung function growth, measured over a period of 2 yr, was not consistently associated with any of the indoor exposure variables. The development of respiratory symptoms over time was not associated with indoor exposure to nitrogen dioxide. There was a significant association between exposure to environmental tobacco smoke in the home and the development of wheeze. There was also a significant association between home dampness and the development of cough.

  13. 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

  14. 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 ...

  15. lighting in the library

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

    Our country spends more than 37 billion each year on electricity for lighting, but technologies developed during the past 10 years can help us cut lighting costs by 30% to 60% ...

  16. Lighting in the Library

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

    The purpose of the Lighting in the Library Activity is to calculate the electricity used to provide lighting in the school library and determine the feasibility of saving energy ...

  17. CONNECTED LIGHTING SYSTEMS MEETING

    Broader source: Energy.gov [DOE]

    There is a lot of buzz today about the Internet of Things and the convergence of intelligent controllable light sources, communication networks, sensors, and data exchange in future lighting...

  18. Connected Lighting Systems Meeting

    Broader source: Energy.gov [DOE]

    There is a lot of buzz today about the Internet of Things and the convergence of intelligent controllable light sources, communication networks, sensors, and data exchange in future lighting...

  19. Method And Apparatus For Reducing Sample Dispersion In Turns And Junctions Of Micro-Channel Systems

    DOE Patents [OSTI]

    Griffiths, Stewart K. , Nilson, Robert H.

    2004-05-11

    What is disclosed pertains to improvement in the performance of microchannel devices by providing turns, wyes, tees, and other junctions that produce little dispersion of a sample as it traverses the turn or junction. The reduced dispersion results from contraction and expansion regions that reduce the cross-sectional area over some portion of the turn or junction. By carefully designing the geometries of these regions, sample dispersion in turns and junctions is reduced to levels comparable to the effects of ordinary diffusion. The low dispersion features are particularly suited for microfluidic devices and systems using either electromotive force, pressure, or combinations thereof as the principle of fluid transport. Such microfluidic devices and systems are useful for separation of components, sample transport, reaction, mixing, dilution or synthesis, or combinations thereof.

  20. Georgia County Turning Industrial and Farm Waste Into Big Energy Savings

    Office of Energy Efficiency and Renewable Energy (EERE)

    Thanks to a Department of Energy Recovery Act grant, Gwinnett County, Georgia is taking some of the grossest stuff on earth and turning it into some of the greenest stuff on earth.

  1. Effectiveness of dye sensitised solar cell under low light condition using wide band dye

    SciTech Connect (OSTI)

    Sahmer, Ahmad Zahrin Mohamed, Norani Muti Zaine, Siti Nur Azella

    2015-07-22

    Dye sensistised solar cell (DSC) based on nanocrystalline TiO{sub 2} has the potential to be used in indoor consumer power application. In realizing this, the DSC must be optimized to generate power under low lighting condition and under wider visible light range. The use of wide band dye N749 which has a wider spectrum sensitivity increases the photon conversion to electron between the visible light spectrums of 390nm to 700nm. This paper reports the study on the effectiveness of the dye solar cell with N749 dye under low light condition in generating usable power which can be used for indoor consumer application. The DSC was fabricated using fluorine doped tin oxide (FTO) glass with screen printing method and the deposited TiO{sub 2} film was sintered at 500°C. The TiO{sub 2} coated FTO glass was then soaked in the N749 dye, assembled into test cell, and tested under the standard test condition at irradiance of 1000 W/m{sup 2} with AM1.5 solar soaker. The use of the 43T mesh for the dual pass screen printing TiO{sub 2} paste gives a uniform TiO{sub 2} film layer of 16 µm. The low light condition was simulated using 1/3 filtered irradiance with the solar soaker. The fabricated DSC test cell with the N749 dye was found to have a higher efficiency of 6.491% under low light condition compared to the N719 dye. Under the standard test condition at 1 sun the N749 test cell efficiency is 4.55%. The increases in efficiency is attributed to the wider spectral capture of photon of the DSC with N749 dye. Furthermore, the use of N749 dye is more effective under low light condition as the V{sub OC} decrement is less significant compared to the latter.

  2. 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...

  3. Light-Source Facilities

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

    Safety Light Source Facilities America ALS - Advanced Light Source, USA APS - Advanced Photon Source, USA CAMD - Center for Advanced Microstructures & Devices, USA CHESS - Cornell High Energy Synchrotron Source, USA CLS - Canadian Light Source, Canada CTST - UCSB Center for Terahertz Science and Technology, USA DFELL - Duke Free Electron Laser Laboratory, USA Jlab - Jefferson Lab, USA LCLS - Linear Coherent Light Source, USA LNLS - Laboratorio Nacional de Luz Sincrotron, Brazil NSLS -

  4. 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

  5. Propagation of polarized light in opals: Amplitude and phase anisotropy

    SciTech Connect (OSTI)

    Baryshev, A. V. Dokukin, M. E.; Merzlikin, A. M.; Inoue, M.

    2011-03-15

    The interaction of linearly polarized light with photonic crystals based on bulk and thin-film synthetic opals is studied. Experimental transmission spectra and spectra showing the polarization state of light transmitted through opals are discussed. A change in polarization is found for waves experiencing Bragg diffraction from systems of crystallographic planes of the opal lattice. It is shown that the polarization plane of the incident linearly polarized wave at the exit from photonic crystals can be considerably rotated. In addition, incident linearly polarized light can be transformed to elliptically polarized light with the turned major axis of the polarization ellipse. Analysis of polarization states of transmitted light by using the transfer-matrix theory and homogenization theory revealed good agreement between calculated and experimental spectra.

  6. Nashville Turns an Eyesore into an Energy-Efficient Asset | Department of

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

    Energy Nashville Turns an Eyesore into an Energy-Efficient Asset Nashville Turns an Eyesore into an Energy-Efficient Asset September 19, 2012 - 10:43am Addthis The completed Nashville Bridge Company's building (called NABRICO for short) includes a geothermal heat pump system to keep public energy costs low. | Photo courtesy of David Powell, AIA. The completed Nashville Bridge Company's building (called NABRICO for short) includes a geothermal heat pump system to keep public energy costs low.

  7. ZERH Webinar: Turning the Building America Solution Center into an Expert

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

    Advisor (Text Version) | Department of Energy Turning the Building America Solution Center into an Expert Advisor (Text Version) ZERH Webinar: Turning the Building America Solution Center into an Expert Advisor (Text Version) Below is the text version of the webinar Your New Best Friend in Action: Business Solutions Using the Building America Solution Center, presented in September 2015. Watch the presentation. Lindsay Parker: Presentation cover slide: ... so today's session is one in a

  8. SunShot Awardee 1366 Technologies Turns Cutting-Edge Research into

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

    Manufacturing Success | Department of Energy Awardee 1366 Technologies Turns Cutting-Edge Research into Manufacturing Success SunShot Awardee 1366 Technologies Turns Cutting-Edge Research into Manufacturing Success October 14, 2015 - 2:42pm Addthis 1366 Technician Becky Allen works in a lab at the company’s Bedford, MA demonstration facility. | Photo courtesy of Bob Frechette 1366 Technician Becky Allen works in a lab at the company's Bedford, MA demonstration facility. | Photo courtesy

  9. Turning Waste Into Fuel: How the INEOS Biorefinery Is Changing the Clean

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

    Energy Game | Department of Energy Waste Into Fuel: How the INEOS Biorefinery Is Changing the Clean Energy Game Turning Waste Into Fuel: How the INEOS Biorefinery Is Changing the Clean Energy Game February 9, 2011 - 1:40pm Addthis Turning Waste Into Fuel: How the INEOS Biorefinery Is Changing the Clean Energy Game Paul Bryan Biomass Program Manager, Office of Energy Efficiency & Renewable Energy How does it work? Vegetative and agricultural waste reacts with oxygen to produce synthesis

  10. Turn Motors Off When Not in Use - Motor Tip Sheet #10

    SciTech Connect (OSTI)

    2008-07-01

    Motors use no energy when turned off. Reducing motor operating time by just 10% usually saves more energy than replacing a standard efficiency motor with a NEMA Premium® efficiency motor. In fact, given that 97% of the life cycle cost of purchasing and operating a motor is energy-related, turning a motor off 10% of the time could reduce energy costs enough to purchase three new motors.

  11. DOE ZERH Webinar: Turning the Building America Solution Center into an

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

    Expert Advisor | Department of Energy Turning the Building America Solution Center into an Expert Advisor DOE ZERH Webinar: Turning the Building America Solution Center into an Expert Advisor As we have often said, the Building America Solution Center (BASC) is your new best friend if you have anything to do with high-performance homes. It provides extensive, up-to-date content needed to integrate building science best practices in specifications, field applications, education, and code

  12. How Miami, Florida is Turning Waste Into Cash | Department of Energy

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

    Miami, Florida is Turning Waste Into Cash How Miami, Florida is Turning Waste Into Cash April 7, 2011 - 3:43pm Addthis Miami-Dade officials talk about using EECBG grant funds for their Methane Sequestration Project. April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs What does this project do? Methane gas captured from a landfill will provide 30 percent of the electricity used at an adjacent wastewater plant. The project will upgrade and expand the existing

  13. Method and apparatus for reducing sample dispersion in turns and junctions of microchannel systems

    DOE Patents [OSTI]

    Griffiths, Stewart K.; Nilson, Robert H.

    2001-01-01

    The performance of microchannel devices is improved by providing turns, wyes, tees, and other junctions that produce little dispersions of a sample as it traverses the turn or junction. The reduced dispersion results from contraction and expansion regions that reduce the cross-sectional area over some portion of the turn or junction. By carefully designing the geometries of these regions, sample dispersion in turns and junctions is reduced to levels comparable to the effects of ordinary diffusion. A numerical algorithm was employed to evolve low-dispersion geometries by computing the electric or pressure field within candidate configurations, sample transport through the turn or junction, and the overall effective dispersion. These devices should greatly increase flexibility in the design of microchannel devices by permitting the use of turns and junctions that do not induce large sample dispersion. In particular, the ability to fold electrophoretic and electrochrornatographic separation columns will allow dramatic improvements in the miniaturization of these devices. The low-lispersion devices are particularly suited to electrochromatographic and electrophoretic separations, as well as pressure-driven chromatographic separation. They are further applicable to microfluidic systems employing either electroosrnotic or pressure-driven flows for sample transport, reaction, mixing, dilution or synthesis.

  14. 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

  15. OLED Lighting in the Offices of Aurora Lighting Design, Inc.

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

    the Offices of Aurora Lighting Design, Inc. DOE Booth Pacific Northwest National Laboratory Leslie North, DesignerPrincipal Aurora Lighting Design, Inc. 2 OLED Lighting at Aurora ...

  16. Light emitting device comprising phosphorescent materials for white light generation

    DOE Patents [OSTI]

    Thompson, Mark E.; Dapkus, P. Daniel

    2014-07-22

    The present invention relates to phosphors for energy downconversion of high energy light to generate a broadband light spectrum, which emit light of different emission wavelengths.

  17. Light-storing photocatalyst

    SciTech Connect (OSTI)

    Zhang Junying; Pan Feng; Hao Weichang; Ge Qi; Wang Tianmian

    2004-12-06

    Light-storing photocatalyst was prepared by coating light-storing phosphor and TiO{sub 2} photocatalyst in sequence on ceramic. The light-storing photocatalyst can store light irradiation and emit slowly. Consequently, the photocatalyst remains active when the irradiation source is cut off. Rhodamine B (RhB) can be decomposed efficiently by this photocatalyst in the dark after it absorbs light irradiation. This photocatalyst is photoreactive in an outdoor environment or can save energy by supplying irradiation intermittently for the photocatalyst.

  18. Photonic crystal light source

    DOE Patents [OSTI]

    Fleming, James G.; Lin, Shawn-Yu; Bur, James A.

    2004-07-27

    A light source is provided by a photonic crystal having an enhanced photonic density-of-states over a band of frequencies and wherein at least one of the dielectric materials of the photonic crystal has a complex dielectric constant, thereby producing enhanced light emission at the band of frequencies when the photonic crystal is heated. The dielectric material can be a metal, such as tungsten. The spectral properties of the light source can be easily tuned by modification of the photonic crystal structure and materials. The photonic crystal light source can be heated electrically or other heating means. The light source can further include additional photonic crystals that exhibit enhanced light emission at a different band of frequencies to provide for color mixing. The photonic crystal light source may have applications in optical telecommunications, information displays, energy conversion, sensors, and other optical applications.

  19. Light metal production

    DOE Patents [OSTI]

    Fan, Qinbai

    2016-04-19

    An electrochemical process for the production of light metals, particularly aluminum. Such a process involves contacting a light metal source material with an inorganic acid to form a solution containing the light metal ions in high concentration. The solution is fed to an electrochemical reactor assembly having an anode side containing an anode and a cathode side containing a cathode, with anode side and the cathode side separated by a bipolar membrane, with the solution being fed to the anode side. Light metal ions are electrochemically transferred through the bipolar membrane to the cathode side. The process further involves reducing the light metal ions to light metal powder. An associated processing system is also provided.

  20. Light diffusing fiber optic chamber (Patent) | DOEPatents

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Language: English Subject: light; diffusing; fiber; optic; chamber; light; diffusion; transmitting; light; target; light; transmitted; ...

  1. 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.

  2. National Synchrotron Light Source

    ScienceCinema (OSTI)

    BNL

    2009-09-01

    A tour of Brookhaven's National Synchrotron Light Source (NSLS), hosted by Associate Laboratory Director for Light Sources, Stephen Dierker. The NSLS is one of the world's most widely used scientific research facilities, hosting more than 2,500 guest researchers each year. The NSLS provides intense beams of infrared, ultraviolet, and x-ray light for basic and applied research in physics, chemistry, medicine, geophysics, environmental, and materials sciences.

  3. Causes of Indoor Air Quality Problems in Schools: Summary of Scientific Research

    SciTech Connect (OSTI)

    Bayer, C.W.

    2001-02-22

    In the modern urban setting, most individuals spend about 80% of their time indoors and are therefore exposed to the indoor environment to a much greater extent than to the outdoors (Lebowitz 1992). Concomitant with this increased habitation in urban buildings, there have been numerous reports of adverse health effects related to indoor air quality (IAQ) (sick buildings). Most of these buildings were built in the last two decades and were constructed to be energy-efficient. The quality of air in the indoor environment can be altered by a number of factors: release of volatile compounds from furnishings, floor and wall coverings, and other finishing materials or machinery; inadequate ventilation; poor temperature and humidity control; re-entrainment of outdoor volatile organic compounds (VOCs); and the contamination of the indoor environment by microbes (particularly fungi). Armstrong Laboratory (1992) found that the three most frequent causes of IAQ are (1) inadequate design and/or maintenance of the heating, ventilation, and air-conditioning (HVAC) system, (2) a shortage of fresh air, and (3) lack of humidity control. A similar study by the National Institute for Occupational Safety and Health (NIOSH 1989) recognized inadequate ventilation as the most frequent source of IAQ problems in the work environment (52% of the time). Poor IAQ due to microbial contamination can be the result of the complex interactions of physical, chemical, and biological factors. Harmful fungal populations, once established in the HVAC system or occupied space of a modern building, may episodically produce or intensify what is known as sick building syndrome (SBS) (Cummings and Withers 1998). Indeed, SBS caused by fungi may be more enduring and recalcitrant to treatment than SBS from multiple chemical exposures (Andrae 1988). An understanding of the microbial ecology of the indoor environment is crucial to ultimately resolving many IAQ problems. The incidence of SBS related to multiple

  4. Lighting in Commercial Buildings

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

    Illuminance Assignments for CBECS Building Activity Categories Illuminance ranges were adopted from the 1987 Illuminating Engineering Society (IES) Lighting Handbook. The IES...

  5. 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...

  6. 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....

  7. Lighting in Commercial Buildings

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

    energy are presented in this section. Statistics are presented by subgroups based on building characteristics, and by subgroups based on lighting equipment. The three sets of...

  8. FEMP Lighting Initiative

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

    Federal Outdoor Lighting Energy Use by Application (Total 5.0 TWh) * Federal Sector Outdoor Lamps by Technology ... * Federal Acquisition Regulation (FAR 23.2 and FAR ...

  9. And there was light

    SciTech Connect (OSTI)

    Bertulani, C. A.

    2015-02-24

    I discuss the use of light as a collection of real and virtual photons to study some lingering questions in particle and nuclear physics.

  10. Extragalactic Background Light

    Office of Scientific and Technical Information (OSTI)

    Extragalactic Background Light from Hierarchical Galaxy Formation: Gamma-ray Attenuation up to the Epoch of Cosmic Reionization and the First Stars Yoshiyuki Inoue 1 , Susumu Inoue...

  11. Lighting Test Facilities

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

    Lighting-Test-Facilities Sign In About | Careers | Contact | Investors | bpa.gov Search Policy & Reporting Expand Policy & Reporting EE Sectors Expand EE Sectors Technology &...

  12. 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.

  13. 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

  14. Protocol for Maximizing Energy Savings and Indoor Environmental Quality Improvements when Retrofitting Apartments

    SciTech Connect (OSTI)

    Noris, Federico; Delp, William W.; Vermeer, Kimberly; Adamkiewicz, Gary; Singer, Brett C.; Fis, William J.

    2012-06-18

    The current focus on building energy retrofit provides an opportunity to simultaneously improve indoor environmental quality (IEQ). Toward this end, we developed a protocol for selecting packages of retrofits that both save energy and improve IEQ in apartments. The protocol specifies the methodology for selecting retrofits from a candidate list while addressing expected energy savings, IEQ impacts, and costs in an integrated manner. Interviews, inspections and measurements are specified to collect the needed input information. The protocol was applied to 17 apartments in three buildings in two different climates within California. Diagnostic measurements and surveys conducted before and after retrofit implementation indicate enhanced apartment performance.

  15. NIOSH (National Institute for Occupational Safety and Health) indoor air quality in office buildings

    SciTech Connect (OSTI)

    Wallingford, K.M.

    1987-01-01

    A total of 356 indoor-air-quality health-hazard evaluations were completed by NIOSH from 1971 through December of 1985. Most of these studies concerned government and private office buildings where there were worker complaints. Worker complaints resulted from contamination from inside the building (19% of the cases), contamination from outside (11 percent), contamination from the building fabric (4%), biological contamination (5%), inadequate ventilation (50%), and unknown causes (11%). Health complaints addressed by investigative efforts included eye irritation, dry throat, headache, fatigue, sinus congestion, skin irritation, shortness of breath, cough, dizziness, and nausea.

  16. Protocol for maximizing energy savings and indoor environmental quality improvements when retrofitting apartments

    SciTech Connect (OSTI)

    Noris, Federico; Delp, William W.; Vermeer, Kimberly; Adamkiewicz, Gary; Singer, Brett C.; Fisk, William J.

    2013-06-01

    The current focus on building energy retrofit provides an opportunity to simultaneously improve indoor environmental quality (IEQ). Toward this end, we developed a protocol for selecting packages of retrofits that both save energy and improve IEQ in apartments. The protocol specifies the methodology for selecting retrofits from a candidate list while addressing expected energy savings, IEQ impacts, and costs in an integrated manner. Interviews, inspections and measurements are specified to collect the needed input information. The protocol was applied to 17 apartments in three buildings in two different climates within California. Diagnostic measurements and surveys conducted before and after retrofit implementation indicate enhanced apartment performance.

  17. Utah School Children "Help Utah Out, Turn off the Spout!" | Department

    Energy Savers [EERE]

    of Energy Utah School Children "Help Utah Out, Turn off the Spout!" Utah School Children "Help Utah Out, Turn off the Spout!" August 27, 2014 - 11:15am Addthis Students in the Nebo School District pose with the winning posters from a competition held by the Utah State Energy Program. |Photo courtesy of the National Energy Foundation Students in the Nebo School District pose with the winning posters from a competition held by the Utah State Energy Program. |Photo courtesy

  18. BPA Turns 75: A Look Back and a Look Ahead | Department of Energy

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

    BPA Turns 75: A Look Back and a Look Ahead BPA Turns 75: A Look Back and a Look Ahead September 28, 2012 - 11:59am Addthis To commemorate what BPA considers a 75-year partnership with the Columbia River, which is the cornerstone of BPA's relationship with the people and utilities of the Northwest, BPA releases the first video of a series detailing its history. Teresa Waugh Public Affairs Specialist, Bonneville Power Administration What is BPA? BPA markets wholesale electrical power from 31

  19. Commercial Ethanol Turns Dross to Dollars for Rural Iowans | Department of

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

    Energy Commercial Ethanol Turns Dross to Dollars for Rural Iowans Commercial Ethanol Turns Dross to Dollars for Rural Iowans September 28, 2011 - 3:23pm Addthis American farmers harvest 80 million acres of corn each autumn. The corn stover usually left on a hewn field can be processed into a renewable transportation fuel called bioethanol. | Image courtesy of POET American farmers harvest 80 million acres of corn each autumn. The corn stover usually left on a hewn field can be processed into

  20. Light intensity compressor

    DOE Patents [OSTI]

    Rushford, Michael C.

    1990-01-01

    In a system for recording images having vastly differing light intensities over the face of the image, a light intensity compressor is provided that utilizes the properties of twisted nematic liquid crystals to compress the image intensity. A photoconductor or photodiode material that is responsive to the wavelength of radiation being recorded is placed adjacent a layer of twisted nematic liquid crystal material. An electric potential applied to a pair of electrodes that are disposed outside of the liquid crystal/photoconductor arrangement to provide an electric field in the vicinity of the liquid crystal material. The electrodes are substantially transparent to the form of radiation being recorded. A pair of crossed polarizers are provided on opposite sides of the liquid crystal. The front polarizer linearly polarizes the light, while the back polarizer cooperates with the front polarizer and the liquid crystal material to compress the intensity of a viewed scene. Light incident upon the intensity compressor activates the photoconductor in proportion to the intensity of the light, thereby varying the field applied to the liquid crystal. The increased field causes the liquid crystal to have less of a twisting effect on the incident linearly polarized light, which will cause an increased percentage of the light to be absorbed by the back polarizer. The intensity of an image may be compressed by forming an image on the light intensity compressor.

  1. Explosively pumped laser light

    DOE Patents [OSTI]

    Piltch, Martin S.; Michelotti, Roy A.

    1991-01-01

    A single shot laser pumped by detonation of an explosive in a shell casing. The shock wave from detonation of the explosive causes a rare gas to luminesce. The high intensity light from the gas enters a lasing medium, which thereafter outputs a pulse of laser light to disable optical sensors and personnel.

  2. Lighting Principles and Terms | Department of Energy

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

    Lighting Principles and Terms Light quantity, energy consumption, and light quality are ... Light quantity, energy consumption, and light quality are the basic principles of ...

  3. LX-17 and ufTATB Data for Corner-Turning, Failure and Detonation

    SciTech Connect (OSTI)

    Souers, P C; Lauderbach, L; Garza, R; Vitello, P; Hare, D E

    2010-02-03

    Data is presented for the size (diameter) effect for ambient and cold confined LX-17, unconfined ambient LX-17, and confined ambient ultrafine TATB. Ambient, cold and hot double cylinder corner-turning data for LX-17, PBX 9502 and ufTATB is presented. Transverse air gap crossing in ambient LX-17 is studied with time delays given for detonations that cross.

  4. Turning a hazardous waste lagoon into reclaimed land for wildlife management: A case study

    SciTech Connect (OSTI)

    Leong, A.K.

    1996-12-31

    Brownfields are turning back to green. This paper presents a case study of a former dump site for hazardous waste that has been remediated and will be developed into an enhanced wildlife management habitat. This successful remediation case combined various investigations, remedial designs, risk assessments, ecological studies, and engineering practices. 3 refs., 1 fig., 1 tab.

  5. Technology Solutions Case Study: Combustion Safety for Appliances Using Indoor Air

    SciTech Connect (OSTI)

    2014-05-01

    This case study describes how to assess and carry out the combustion safety procedures for appliances and heating equipment that uses indoor air for combustion in low-rise residential buildings. Only appliances installed in the living space, or in an area freely communicating with the living space, vented alone or in tandem with another appliance are considered here. This document is for inspectors, auditors, and technicians working in homes where energy upgrades are being conducted whether or not air infiltration control is included in the package of measures being applied. In the indoor combustion air case, guidelines summarized here are based on language provided in several of the codes to establish minimum requirements for the space using simplified prescriptive measures. In addition, building performance testing procedures are provided by testing agencies. The codes in combination with the test procedures offer comprehensive combustion safety coverage to address safety concerns, allowing inexperienced residential energy retrofit inspectors to effectively address combustion safety issues and allow energy retrofits to proceed.

  6. Effect of residential air-to-air heat and moisture exchangers on indoor humidity

    SciTech Connect (OSTI)

    Barringer, C.G.; McGugan, C.A. )

    1989-01-01

    A project was undertaken to develop guidelines for the selection of residential heat and moisture recovery ventilation systems (HRVs) in order to maintain an acceptable indoor humidity for various climatic conditions. These guidelines were developed from reviews on ventilation requirements, HRV performance specifications, and from computer modeling. Space conditions within three house/occupancy models for several types of HRV were simulated for three climatic conditions (Lake Charles, LA; Seattle, WA; and Winnipeg, MB) in order to determine the impact of the HRVs on indoor relative humidity and space-conditioning loads. Results show that when reduction of cooling cost is the main consideration, exchangers with moisture recovery are preferable to sensible HRVs. For reduction of heating costs, moisture recovery should be done for ventilation rates greater than about 15 L/s and average winter temperatures less than about (minus) 10{degrees}C if internal moisture generation rates are low. For houses with higher ventilation rates and colder average winter temperatures, exchangers with moisture recovery should be used.

  7. Results of a forty-home indoor-air-pollutant monitoring study

    SciTech Connect (OSTI)

    Hawthorne, A.R.; Gammage, R.B.; Dudney, C.S.; Womack, D.R.; Morris, S.A.; Westley, R.R.; White, D.A.; Gupta, K.C.

    1983-01-01

    A study was conducted in 40 homes in the areas of Oak Ridge and west Knoxville, Tennessee. Concentrations of CO/sub x/, NO/sub x/, particulates, formaldehyde, and radon, as well as selected volatile organic compounds, were quantified. In addition, information was collected on air exchange rates, meteorological conditions, and structural and consumer products. This paper summarizes some of the results and provides specific examples of increased indoor concentrations of pollutants due to the operation of a kerosene space heater, a gas range, and a wood/coal stove. Results showed formaldehyde levels frequently exceeded 0.1 ppM; were highest in newer homes; and fluctuate diurnally and seasonally. Radon levels frequently exceeded 3 pCi/L and correlated strongly with house location. Organic pollutant levels were at least an order of magnitude higher indoors than outdoors. Combustion sources (especially unvented) significantly increased levels of CO/sub x/, NO/sub x/, and particulates. Air exchange rates were increased nearly two-fold by operation of the HVAC central air circulation fan.

  8. Study on the influence of CR-39 detector size on radon progeny detection in indoor environments

    SciTech Connect (OSTI)

    Pereira, L. A.; Hadler, J. C.; Lixandrão F, A. L.; Guedes, S.; Takizawa, R. H.

    2014-11-11

    It is well known that radon daughters up to {sup 214}Po are the real contaminants to be considered in case of indoor radon contamination. Assemblies consisting of 6 circular bare sheets of CR-39, a nuclear track detector, with radius varying from 0.15 to 1.2 cm were exposed far from any material surface for periods of approximately 6 months in 13 different indoor rooms (7 workplaces and 6 dwellings), where ventilation was moderate or poor. It was observed that track density was as greater as smaller was the detector radius. Track density data were fitted using an equation deduced based on the assumption that the behavior of radon and its progeny in the air was described by Fick's Law, i.e., when the main mechanism of transport of radon progeny in the air is diffusion. As many people spend great part of their time in closed or poorly ventilated environments, the confirmation they present equilibrium between radon and its progeny is an interesting start for dosimetric calculations concerning this contamination.

  9. Measure Guideline: Combustion Safety for Natural Draft Appliances Using Indoor Air

    SciTech Connect (OSTI)

    Brand, L.

    2014-04-01

    This measure guideline covers how to assess and carry out the combustion safety procedures for appliances and heating equipment that uses indoor air for combustion in low-rise residential buildings. Only appliances installed in the living space, or in an area freely communicating with the living space, vented alone or in tandem with another appliance are considered here. A separate measure guideline addresses combustion appliances located either within the living space in enclosed closets or side rooms or outside the living space in an adjacent area like an attic or garage that use outdoor air for combustion. This document is for inspectors, auditors, and technicians working in homes where energy upgrades are being conducted whether or not air infiltration control is included in the package of measures being applied. In the indoor combustion air case, guidelines summarized here are based on language provided in several of the codes to establish minimum requirements for the space using simplified prescriptive measures. In addition, building performance testing procedures are provided by testing agencies. The codes in combination with the test procedures offer comprehensive combustion safety coverage to address safety concerns, allowing inexperienced residential energy retrofit inspectors to effectively address combustion safety issues and allow energy retrofits to proceed.

  10. Should Title 24 Ventilation Requirements Be Amended to include an Indoor Air Quality Procedure?

    SciTech Connect (OSTI)

    Dutton, Spencer M.; Mendell, Mark J.; Chan, Wanyu R.

    2013-05-13

    Minimum outdoor air ventilation rates (VRs) for buildings are specified in standards, including California?s Title 24 standards. The ASHRAE ventilation standard includes two options for mechanically-ventilated buildings ? a prescriptive ventilation rate procedure (VRP) that specifies minimum VRs that vary among occupancy classes, and a performance-based indoor air quality procedure (IAQP) that may result in lower VRs than the VRP, with associated energy savings, if IAQ meeting specified criteria can be demonstrated. The California Energy Commission has been considering the addition of an IAQP to the Title 24 standards. This paper, based on a review of prior data and new analyses of the IAQP, evaluates four future options for Title 24: no IAQP; adding an alternate VRP, adding an equivalent indoor air quality procedure (EIAQP), and adding an improved ASHRAE-like IAQP. Criteria were established for selecting among options, and feedback was obtained in a workshop of stakeholders. Based on this review, the addition of an alternate VRP is recommended. This procedure would allow lower minimum VRs if a specified set of actions were taken to maintain acceptable IAQ. An alternate VRP could also be a valuable supplement to ASHRAE?s ventilation standard.

  11. Indoor Localization Algorithms for an Ambulatory Human Operated 3D Mobile Mapping System

    SciTech Connect (OSTI)

    Corso, N; Zakhor, A

    2013-12-03

    Indoor localization and mapping is an important problem with many applications such as emergency response, architectural modeling, and historical preservation. In this paper, we develop an automatic, off-line pipeline for metrically accurate, GPS-denied, indoor 3D mobile mapping using a human-mounted backpack system consisting of a variety of sensors. There are three novel contributions in our proposed mapping approach. First, we present an algorithm which automatically detects loop closure constraints from an occupancy grid map. In doing so, we ensure that constraints are detected only in locations that are well conditioned for scan matching. Secondly, we address the problem of scan matching with poor initial condition by presenting an outlier-resistant, genetic scan matching algorithm that accurately matches scans despite a poor initial condition. Third, we present two metrics based on the amount and complexity of overlapping geometry in order to vet the estimated loop closure constraints. By doing so, we automatically prevent erroneous loop closures from degrading the accuracy of the reconstructed trajectory. The proposed algorithms are experimentally verified using both controlled and real-world data. The end-to-end system performance is evaluated using 100 surveyed control points in an office environment and obtains a mean accuracy of 10 cm. Experimental results are also shown on three additional datasets from real world environments including a 1500 meter trajectory in a warehouse sized retail shopping center.

  12. Report on HVAC option selections for a relocatable classroom energy and indoor environmental quality field study

    SciTech Connect (OSTI)

    Apte, Michael G.; Delp, Woody W.; Diamond, Richard C.; Hodgson, Alfred T.; Kumar, Satish; Rainer, Leo I.; Shendell, Derek G.; Sullivan, Doug P.; Fisk, William J.

    2001-10-11

    It is commonly assumed that efforts to simultaneously develop energy efficient building technologies and to improve indoor environmental quality (IEQ) are unfeasible. The primary reason for this is that IEQ improvements often require additional ventilation that is costly from an energy standpoint. It is currently thought that health and productivity in work and learning environments requires adequate, if not superior, IEQ. Despite common assumptions, opportunities do exist to design building systems that provide improvements in both energy efficiency and IEQ. This report outlines the selection of a heating, ventilation, and air conditioning (HVAC) system to be used in demonstrating such an opportunity in a field study using relocatable school classrooms. Standard classrooms use a common wall mounted heat pump HVAC system. After reviewing alternative systems, a wall-mounting indirect/direct evaporative cooling system with an integral hydronic gas heating is selected. The anticipated advantages of this system include continuous ventilation of 100 percent outside air at or above minimum standards, projected cooling energy reductions of about 70 percent, inexpensive gas heating, improved airborne particle filtration, and reduced peak load electricity use. Potential disadvantages include restricted climate regions and possible increases in indoor relative humidity levels under some conditions.

  13. The ORNL Indoor Air Quality Study: Re-cap, Context, and Assessment on Radon

    SciTech Connect (OSTI)

    Tonn, Bruce Edward; Rose, Erin M.; Ternes, Mark P.

    2015-10-01

    As part of the retrospective evaluation of the U.S. Department of Energy s low-income Weatherization Assistance Program that was led by Oak Ridge National Laboratory (ORNL), an assessment of the impacts of weatherization on indoor air quality (IAQ) was conducted. This assessment included nearly 500 treatment and control homes across the country. Homes were monitored for carbon monoxide, radon, formaldehyde, temperature and humidity pre- and post-weatherization. This report focuses on the topic of radon and addresses issues not thoroughly discussed in the original IAQ report. The size, scope and rigor of the radon component of the IAQ study are compared to previous studies that assessed the impacts of weatherization on indoor radon levels. It is found that the ORNL study is by far the most extensive study conducted to date, though the ORNL results are consistent with the findings of the other studies. However, the study does have limitations related to its reliance on short-term measurements of radon and inability to attribute changes in radon levels in homes post-weatherization to specific weatherization measures individually or in combination.

  14. 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.

  15. Green Light Pulse Oximeter

    DOE Patents [OSTI]

    Scharf, John Edward

    1998-11-03

    A reflectance pulse oximeter that determines oxygen saturation of hemoglobin using two sources of electromagnetic radiation in the green optical region, which provides the maximum reflectance pulsation spectrum. The use of green light allows placement of an oximetry probe at central body sites (e.g., wrist, thigh, abdomen, forehead, scalp, and back). Preferably, the two green light sources alternately emit light at 560 nm and 577 nm, respectively, which gives the biggest difference in hemoglobin extinction coefficients between deoxyhemoglobin, RHb, and oxyhemoglobin, HbO.sub.2.

  16. Lighting in the Library

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

    lores.pdf (1.43

    hires.pdf (1.65

    The purpose of the Lighting in the Library Activity is to calculate the electricity used to provide lighting in the school library and determine the feasibility of saving energy and money by using energy efficient lighting fixtures. Your students will assume the role of an energy auditor assigned the task of assessing the current situation and making a recommendation for energy-efficient improvements. This activitity requires a trip to the library, an

  17. White light velocity interferometer

    DOE Patents [OSTI]

    Erskine, D.J.

    1997-06-24

    The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s. 41 figs.

  18. White light velocity interferometer

    DOE Patents [OSTI]

    Erskine, David J.

    1997-01-01

    The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s.

  19. White light velocity interferometer

    DOE Patents [OSTI]

    Erskine, David J.

    1999-01-01

    The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s.

  20. White light velocity interferometer

    DOE Patents [OSTI]

    Erskine, D.J.

    1999-06-08

    The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s. 41 figs.

  1. Lighting in Commercial Buildings

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

    5.2 152.6 160.5 54.6 Assembly Health Care Lodging Office 0 20 40 60 80 100 120 140 160 180 Energy Information Administration Energy Consumption Series: Lighting in Commercial...

  2. National Synchrotron Light Source

    ScienceCinema (OSTI)

    None

    2010-01-08

    A tour of Brookhaven's National Synchrotron Light Source (NSLS). The NSLS is one of the world's most widely used scientific research facilities, hosting more than 2,500 guest researchers each year. The NSLS provides intense beams of infrared, ultraviole

  3. Peninsula Light Company PenLight | Open Energy Information

    Open Energy Info (EERE)

    Company PenLight Jump to: navigation, search Name: Peninsula Light Company (PenLight) Place: Gig Harbor, Washington State Zip: 98335-0078 Product: Member-owned electric cooperative...

  4. 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...

  5. Demonstration Assessment of Light-Emitting Diode (LED) Roadway Lighting

    SciTech Connect (OSTI)

    Kinzey, B. R.; Myer, M. A.

    2009-11-01

    A U.S. Department of Energy Solid-State Lighting Gateway Report on a Demonstration Assessment of Light-Emitting Diode (LED) Roadway Lighting in Lija Loop, Portland, Oregon.

  6. A crossover design study to evaluate the effectiveness of appliance inspection and servicing for lowering indoor nitrogen dioxide concentrations

    SciTech Connect (OSTI)

    Colome, S.D. ); Billick, I.H. ); Baker, P.E.; Beals, S.A.; Rubio, S.A.; Cunningham, S.J. ); Wilson, A.L. )

    1988-01-01

    Some researchers have suggested that natural gas appliances are significant contributors to indoor air pollution. Indoor unvented combustion appliances, such as gas-fired ranges, unvented space heaters, and portable kerosene space heaters, have been associated with a wide variety of pollutants, including carbon monoxide (CO), nitric oxide (NO), nitrogen dioxide (NO{sub 2}), sulfur dioxide (SO{sub 2}), formaldehyde (HCHO), and respirable particles. Previous indoor air quality studies have demonstrated that indoor NO{sub 2} concentrations often exceed outdoor ambient levels when gas- burning appliances are used. Cooking with gas has been the focus of many of these studies, although other unvented appliances, such as space-heaters, have also been associated with elevated NO{sub 2} concentrations. Some epidemiologic studies of exposure to NO{sub 2} in homes with gas ranges have indicated a higher prevalence of respiratory symptoms and illness. However, other studies contradicted these findings and failed to show any significant effects associated with gas cooking.

  7. Energy Code Enforcement Training Manual : Covering the Washington State Energy Code and the Ventilation and Indoor Air Quality Code.

    SciTech Connect (OSTI)

    Washington State Energy Code Program

    1992-05-01

    This manual is designed to provide building department personnel with specific inspection and plan review skills and information on provisions of the 1991 edition of the Washington State Energy Code (WSEC). It also provides information on provisions of the new stand-alone Ventilation and Indoor Air Quality (VIAQ) Code.The intent of the WSEC is to reduce the amount of energy used by requiring energy-efficient construction. Such conservation reduces energy requirements, and, as a result, reduces the use of finite resources, such as gas or oil. Lowering energy demand helps everyone by keeping electricity costs down. (It is less expensive to use existing electrical capacity efficiently than it is to develop new and additional capacity needed to heat or cool inefficient buildings.) The new VIAQ Code (effective July, 1991) is a natural companion to the energy code. Whether energy-efficient or not, an homes have potential indoor air quality problems. Studies have shown that indoor air is often more polluted than outdoor air. The VIAQ Code provides a means of exchanging stale air for fresh, without compromising energy savings, by setting standards for a controlled ventilation system. It also offers requirements meant to prevent indoor air pollution from building products or radon.

  8. Building America Technology Solutions for New and Existing Homes: Combustion Safety Using Appliances for Indoor Air (Fact Sheet)

    Broader source: Energy.gov [DOE]

    In this case study, the Partnership for Advanced Residential Retrofit team provides guidance on how to assess and carry out the combustion safety procedures for appliances and heating equipment that uses indoor air for combustion in low-rise residential buildings.

  9. Solid state lighting component

    DOE Patents [OSTI]

    Yuan, Thomas; Keller, Bernd; Ibbetson, James; Tarsa, Eric; Negley, Gerald

    2010-10-26

    An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.

  10. Solid state lighting component

    DOE Patents [OSTI]

    Keller, Bernd; Ibbetson, James; Tarsa, Eric; Negley, Gerald; Yuan, Thomas

    2012-07-10

    An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.

  11. A Pilot Study of the Effectiveness of Indoor Plants for Removal of Volatile Organic Compounds in Indoor Air in a Seven-Story Office Building

    SciTech Connect (OSTI)

    Apte, Michael G.; Apte, Joshua S.

    2010-04-27

    The Paharpur Business Centre and Software Technology Incubator Park (PBC) is a 7 story, 50,400 ft{sup 2} office building located near Nehru Place in New Delhi India. The occupancy of the building at full normal operations is about 500 people. The building management philosophy embodies innovation in energy efficiency while providing full service and a comfortable, safe, healthy environment to the occupants. Provision of excellent Indoor Air Quality (IAQ) is an expressed goal of the facility, and the management has gone to great lengths to achieve it. This is particularly challenging in New Delhi, where ambient urban pollution levels rank among the worst on the planet. The approach to provide good IAQ in the building includes a range of technical elements: air washing and filtration of ventilation intake air from rooftop air handler, the use of an enclosed rooftop greenhouse with a high density of potted plants as a bio-filtration system, dedicated secondary HVAC/air handling units on each floor with re-circulating high efficiency filtration and UVC treatment of the heat exchanger coils, additional potted plants for bio-filtration on each floor, and a final exhaust via the restrooms located at each floor. The conditioned building exhaust air is passed through an energy recovery wheel and chemisorbent cartridge, transferring some heat to the incoming air to increase the HVAC energy efficiency. The management uses 'green' cleaning products exclusively in the building. Flooring is a combination of stone, tile and 'zero VOC' carpeting. Wood trim and finish appears to be primarily of solid sawn materials, with very little evidence of composite wood products. Furniture is likewise in large proportion constructed from solid wood materials. The overall impression is that of a very clean and well-kept facility. Surfaces are polished to a high sheen, probably with wax products. There was an odor of urinal cake in the restrooms. Smoking is not allowed in the building. The

  12. (Lighting and) Solid-State Lighting: Science, Technology, Economic...

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

    Lighting and) Solid-State Lighting: Science, Technology, Economic Perspectives - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate ...

  13. 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...

  14. 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....

  15. And the Oscar for Sustainable Mobile Lighting Goes to.... Lighting...

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

    There are about 100,000 diesel-powered mobile lighting towers in the United States, ... building, and testing a mobile lighting tower powered by hydrogen fuel cell ...

  16. 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 ...

  17. NREL's Multi-Junction Solar Cells Teach Scientists How to Turn Plants into

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

    Powerhouses - News Releases | NREL NREL's Multi-Junction Solar Cells Teach Scientists How to Turn Plants into Powerhouses May 12, 2011 Plants can overcome their evolutionary legacies to become much better at using biological photosynthesis to produce energy, the kind of energy that can power vehicles in the near future, an all-star collection of biologists, physicists, photochemists, and solar scientists has found. A U.S. Department of Energy (DOE) workshop that drew a prestigious collection

  18. Savannah River Site's H Canyon Turns 60 Years Old | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) Site's H Canyon Turns 60 Years Old Tuesday, August 25, 2015 - 2:32pm The H Canyon Facility at the Savannah River Site (SRS) recently celebrated 60 years of service to the United States; first in producing nuclear materials in support of our nation's defense weapons programs and later, after the Cold War, helping to disposition and stabilize nuclear materials and spent nuclear fuel from legacy cleanup, and both foreign and domestic research reactors. "H

  19. A new leaf: Scientists turn carbon dioxide back into fuel | Argonne

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

    National Laboratory Argonne postdoctoral researcher Cong Liu and chemists Larry Curtiss and Peter Zapol discuss their recent research results on converting carbon dioxide into usable fuel. Photo by Wes Agresta. Argonne postdoctoral researcher Cong Liu and chemists Larry Curtiss and Peter Zapol discuss their recent research results on converting carbon dioxide into usable fuel. Photo by Wes Agresta. A new leaf: Scientists turn carbon dioxide back into fuel July 29, 2016 Tweet EmailPrint As

  20. How to Turn Carbon into A Magnet? X-rays and Protons Give the Answer!

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

    to Turn Carbon into A Magnet? X-rays and Protons Give the Answer! Since antiquity, magnetism has appeared to be a trick performed only by iron, nickel, cobalt and a handful of rare alloys. But now the exclusive club of magnetic elements officially has a new member: carbon. Using a proton beam and advanced x-ray techniques, researchers at the Department of Energy's Stanford Linear Accelerator Center (SLAC) in collaboration with colleagues from the University of Leipzig and Lawrence Berkeley

  1. Fabrication of large radii toroidal surfaces by single point diamond turning

    SciTech Connect (OSTI)

    Cunningham, J.P.; Marlar, T.A.; Miller, A.C.; Paterson, R. L.

    1995-12-31

    An unconventional machining technique has been developed for producing relatively large radii quasi-toroidal surfaces which could not normally be produced by conventional diamond turning technology. The maximum radial swing capacity of a diamond turning lathe is the limiting factor for the rotational radius of any toroid. A typical diamond turned toroidal surface is produced when a part is rotated about the spindle axis while the diamond tool contours the surface with any curved path. Toric surfaces sliced horizontally, have been used in laser resonator cavities. This paper will address the fabrication of a special case of toroids where a rotating tool path is a circle whose center is offset from the rotational axis of the toroid by a distance greater than the minor radius of the tool path. The quasi-toroidal surfaces produced by this technique approximate all asymmetrical combinations of concave/convex section of a torus. Other machine configurations have been reported which offer alternative approaches to the fabrication of concave asymmetric aspheric surfaces. Prototypes of unique lenses each having two quasi-toroidal surfaces were fabricated in the Ultraprecision Manufacturing Technology Center at form key components of a scanned laser focusing system. As an example of the problem faced, the specifications for one of the surfaces was equivalent to a section of a torus with a two meter diameter hole. The lenses were fabricated on a Nanoform 600 diamond turning lathe. This is a numerically controlled two axis T-base lathe with an air bearing spindle and oil hydrostatic slides. The maximum radial swing for this machine is approximately 0.3 meters.

  2. Sandia researcher turns "problem" of nonlinear capacitors into a solution |

    National Nuclear Security Administration (NNSA)

    National Nuclear Security Administration | (NNSA) researcher turns "problem" of nonlinear capacitors into a solution Friday, January 22, 2016 - 2:00am NNSA Blog Sandia National Laboratories' Researcher Juan Elizondo-Decanini holds two compact, high-voltage nonlinear transmission lines. He leads a project on nonlinear behavior in materials - behavior that's usually shunned because it's so unpredictable. (Photo by Randy Montoya) Sandia National Laboratories' Juan Elizondo-Decanini

  3. Turning Waste Heat into Power: Ener-G-Rotors and the Entrepreneurial Mentorship Program

    Broader source: Energy.gov [DOE]

    If you’ve ever driven by an industrial plant, you’ve probably noticed big white plumes rising from the tops of the facilities. While it might look like smoke or pollution at first glance, most of the time those white plumes are comprised of steam and heat, or what Ener-G-Rotors CEO Michael Newell calls waste heat. Mike and the researchers of Ener-G-Rotors are finding ways to use this escaped steam and turn it into energy.

  4. 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...

  5. Lighting Control Energy Savings

    Energy Science and Technology Software Center (OSTI)

    1985-01-01

    CONTROLITE 1.0 is a lighting energy analysis program designed to calculate the energy savings and cost benefits obtainable using lighting controls in buildings. The program can compute the lighting energy reductions that result from using daylighting, scheduling, and other control strategies. When modeling daylight control systems, the program uses QUICKLITE to compute the daylight illuminances at specified points 5 times a day, 12 days a year (the 21st of each month), and for two skymore » conditions (clear and overcast skies). Fourier series techniques are used to fit a continuous curve through the computed illuminance points. The energy use for each of the 12 days is then computed given user-specified power-in/light-out characteristics of the modeled control system. The monthly and annual energy usage for overcast and clear conditions are found separately by fitting two long-term Fourier series curves to the energy use computed for each of the 12 days. Finally, the monthly energy use is calculated by taking a weighted average for the monthly energy use computed for the overcast and clear sky conditions. The program only treats the energy use directly attributable to lighting. The impact of lighting control strategies on building thermal loads is not computed. The program allows input of different control schedules (i.e., on/off times for the lighting system) for each day of the week, but every week of the year is treated the same; thus, holidays cannot be modeled explicitly. When used for daylighting purposes, CONTROLITE1.0 understands only clear and overcast conditions. User-supplied values for the proportion of clear and overcast hours for each month of the year are required to accommodate different climatic conditions.« less

  6. Another Side of Light - D

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

    D. Three quantum phenomena In fluorescence, matter absorbs light waves of a high frequency and then emits light of the same or lower frequency. This process was studied and named by George Gabriel Stokes in the mid-19th century. Today, fluorescence is familiar to us from fluorescent light bulbs. A fluorescent bulb's filament produces ultraviolet light, which is absorbed by the bulb's inner coating, which then emits lower-frequency visible light-more visible light than an incandescent bulb

  7. Light diffusing fiber optic chamber

    DOE Patents [OSTI]

    Maitland, Duncan J.

    2002-01-01

    A light diffusion system for transmitting light to a target area. The light is transmitted in a direction from a proximal end to a distal end by an optical fiber. A diffusing chamber is operatively connected to the optical fiber for transmitting the light from the proximal end to the distal end and transmitting said light to said target area. A plug is operatively connected to the diffusing chamber for increasing the light that is transmitted to the target area.

  8. Outdoor Lighting | Department of Energy

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

    Outdoor Lighting Outdoor Lighting Outdoor lighting consumes a significant amount of energy-about 1.3 quadrillion Btu annually-costing about $10 billion per year. In the last five years, a number of municipalities have switched to new LED technologies that can reduce energy costs by approximately 50% over conventional lighting technologies and provide additional savings of 20 to 40% with advance lighting controls. Beyond cost and energy savings, the higher efficiency of LED lights provides other

  9. Demonstration of LED Street Lighting

    SciTech Connect (OSTI)

    Kinzey, B. R.; Royer, M. P.; Hadjian, M.; Kauffman, R.

    2013-06-01

    GATEWAY program and Municipal Solid-State Street Lighting Consortium report on a demonstration of LED street lighting in Kansas City, MO.

  10. Lighting Controls | Department of Energy

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

    fluorescent lighting fixtures rather than replace them. Dimmers and LEDs Some light-emitting diode (LED) lightbulbs can be used with dimmers. LED bulbs and fixtures must be...

  11. LED Lighting | Department of Energy

    Office of Environmental Management (EM)

    of lighting in the United States. Residential LEDs -- especially ENERGY STAR rated products -- use at least 75% less energy, and last 25 times longer, than incandescent lighting. ...

  12. Lighting in Commercial Buildings, 1986

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

    Lighting in Commercial Buildings --1986 Overview Full Report and Tables Detailed analysis of energy consumption for lighting for U.S. commercial buildings. previous page...

  13. GATEWAY Demonstrations: LED Street Lighting

    SciTech Connect (OSTI)

    Cook, Tyson; Shackelford, Jordan; Pang, Terrance Pang

    2008-12-01

    This report summarizes an assessment project conducted to study the performance of light emitting diode (LED) luminaires in a street lighting application in San Francisco, CA.

  14. Shedding Light on Nanocrystal Defects

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

    Shedding Light on Nanocrystal Defects Shedding Light on Nanocrystal Defects Print Thursday, 20 June 2013 10:41 Nanocrystals have been the focus of much scientific interest lately,...

  15. New light on human evolution

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

    light on human evolution New light on human evolution Scientists recently unearthed 8 million-year-old gorilla fossils from the Chorora Formation in Ethiopia, which indicate the ...

  16. Technology Solutions Case Study: Ventilation System Effectiveness and Tested Indoor Air Quality Impacts

    SciTech Connect (OSTI)

    A. Rudd and D. Bergey

    2015-08-01

    Ventilation system effectiveness testing was conducted at two unoccupied, single-family, detached lab homes at the University of Texas - Tyler. Five ventilation system tests were conducted with various whole-building ventilation systems. Multizone fan pressurization testing characterized building and zone enclosure leakage. PFT testing showed multizone air change rates and interzonal airflow filtration. Indoor air recirculation by a central air distribution system can help improve the exhaust ventilation system by way of air mixing and filtration. In contrast, the supply and balanced ventilation systems showed that there is a significant benefit to drawing outside air from a known outside location, and filtering and distributing that air. Compared to the Exhaust systems, the CFIS and ERV systems showed better ventilation air distribution and lower concentrations of particulates, formaldehyde and other VOCs.

  17. Characterizing Indoor Airflow and Pollutant Transport using Simulation Modeling for Prototypical Buildings. I. Office Buildings

    SciTech Connect (OSTI)

    Sohn, M.D.; Daisey, J.M.; Feustel, H.E.

    1999-06-01

    This paper describes the first efforts at developing a set of prototypical buildings defined to capture the key features affecting airflow and pollutant transport in buildings. These buildings will be used to model airflow and pollutant transport for emergency response scenarios when limited site-specific information is available and immediate decisions must be made, and to better understand key features of buildings controlling occupant exposures to indoor pollutant sources. This paper presents an example of this approach for a prototypical intermediate-sized, open style, commercial building. Interzonal transport due to a short-term source release, e.g., accidental chemical spill, in the bottom and the upper floors is predicted and corresponding HVAC system operation effects and potential responses are considered. Three-hour average exposure estimates are used to compare effects of source location and HVAC operation.

  18. EERE Success Story-Uncle Sam Turns to SAM for Solar Modeling...

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

    Addthis Related Articles President Barack Obama delivers remarks on fuel efficiency standards for 2017-2025 model year cars and light-duty trucks during an event at the Washington ...

  19. Sneaky light stop

    SciTech Connect (OSTI)

    Eifert, Till; Nachman, Benjamin

    2015-02-20

    A light supersymmetric top quark partner (stop) with a mass nearly degenerate with that of the standard model (SM) top quark can evade direct searches. The precise measurement of SM top properties such as the cross-section has been suggested to give a handle for this ‘stealth stop’ scenario. We present an estimate of the potential impact a light stop may have on top quark mass measurements. The results indicate that certain light stop models may induce a bias of up to a few GeV, and that this effect can hide the shift in, and hence sensitivity from, cross-section measurements. Due to the different initial states, the size of the bias is slightly different between the LHC and the Tevatron. The studies make some simplifying assumptions for the top quark measurement technique, and are based on truth-level samples.

  20. Sneaky light stop

    SciTech Connect (OSTI)

    Eifert, Till; Nachman, Benjamin

    2015-04-01

    A light supersymmetric top quark partner (stop) with a mass nearly degenerate with that of the standard model (SM) top quark can evade direct searches. The precise measurement of SM top properties such as the cross-section has been suggested to give a handle for this ‘stealth stop’ scenario. We present an estimate of the potential impact a light stop may have on top quark mass measurements. The results indicate that certain light stop models may induce a bias of up to a few GeV, and that this effect can hide the shift in, and hence sensitivity from, cross-section measurements. Due to the different initial states, the size of the bias is slightly different between the LHC and the Tevatron. The studies make some simplifying assumptions for the top quark measurement technique, and are based on truth-level samples.

  1. 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.

  2. Light emitting ceramic device

    DOE Patents [OSTI]

    Valentine, Paul; Edwards, Doreen D.; Walker, Jr., William John; Slack, Lyle H.; Brown, Wayne Douglas; Osborne, Cathy; Norton, Michael; Begley, Richard

    2010-05-18

    A light-emitting ceramic based panel, hereafter termed "electroceramescent" panel, is herein claimed. The electroceramescent panel is formed on a substrate providing mechanical support as well as serving as the base electrode for the device. One or more semiconductive ceramic layers directly overlay the substrate, and electrical conductivity and ionic diffusion are controlled. Light emitting regions overlay the semiconductive ceramic layers, and said regions consist sequentially of a layer of a ceramic insulation layer and an electroluminescent layer, comprised of doped phosphors or the equivalent. One or more conductive top electrode layers having optically transmissive areas overlay the light emitting regions, and a multi-layered top barrier cover comprising one or more optically transmissive non-combustible insulation layers overlay said top electrode regions.

  3. Light harvesting arrays

    DOE Patents [OSTI]

    Lindsey, Jonathan S.

    2002-01-01

    A light harvesting array useful for the manufacture of devices such as solar cells comprises: (a) a first substrate comprising a first electrode; and (b) a layer of light harvesting rods electrically coupled to the first electrode, each of the light harvesting rods comprising a polymer of Formula I: X.sup.1.paren open-st.X.sup.m+1).sub.m (I) wherein m is at least 1, and may be from two, three or four to 20 or more; X.sup.1 is a charge separation group (and preferably a porphyrinic macrocycle, which may be one ligand of a double-decker sandwich compound) having an excited-state of energy equal to or lower than that of X.sup.2, and X.sup.2 through X.sup.m+1 are chromophores (and again are preferably porphyrinic macrocycles).

  4. Sneaky light stop

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

    Eifert, Till; Nachman, Benjamin

    2015-02-20

    A light supersymmetric top quark partner (stop) with a mass nearly degenerate with that of the standard model (SM) top quark can evade direct searches. The precise measurement of SM top properties such as the cross-section has been suggested to give a handle for this ‘stealth stop’ scenario. We present an estimate of the potential impact a light stop may have on top quark mass measurements. The results indicate that certain light stop models may induce a bias of up to a few GeV, and that this effect can hide the shift in, and hence sensitivity from, cross-section measurements. Duemore » to the different initial states, the size of the bias is slightly different between the LHC and the Tevatron. The studies make some simplifying assumptions for the top quark measurement technique, and are based on truth-level samples.« less

  5. Radioluminescent lighting technology

    SciTech Connect (OSTI)

    Not Available

    1990-01-01

    The glow-in-the-dark stereotype that characterizes the popular image of nuclear materials is not accidental. When the French scientist, Henri Becquerel, first discovered radioactivity in 1896, he was interested in luminescence. Radioluminescence, the production of light from a mixture of energetic and passive materials, is probably the oldest practical application of the unstable nucleus. Tritium-based radioluminescent lighting, in spite of the biologically favorable character of the gaseous tritium isotope, was included in the general tightening of environmental and safety regulations. Tritium light manufacturers would have to meet two fundamental conditions: (1) The benefit clearly outweighed the risk, to the extent that even the perceived risk of a skeptical public would be overcome. (2) The need was significant enough that the customer/user would be willing and able to afford the cost of regulation that was imposed both in the manufacture, use and eventual disposal of nuclear materials. In 1981, researchers at Oak Ridge National Laboratory were investigating larger radioluminescent applications using byproduct nuclear material such as krypton-85, as well as tritium. By 1982, it appeared that large source, (100 Curies or more) tritium gas tube, lights might be useful for marking runways and drop zones for military operations and perhaps even special civilian aviation applications. The successful development of this idea depended on making the light bright enough and demonstrating that large gas tube sources could be used and maintained safely in the environment. This successful DOE program is now in the process of being completed and closed-out. Working closely with the tritium light industry, State governments and other Federal agencies, the basic program goals have been achieved. This is a detailed report of what they have learned, proven, and discovered. 91 refs., 29 figs., 5 tabs. (JF)

  6. Light Water Reactor Sustainability (LWRS) Program | Department...

    Energy Savers [EERE]

    Nuclear Reactor Technologies Light Water Reactor Sustainability (LWRS) Program Light Water Reactor Sustainability (LWRS) Program Light Water Reactor Sustainability (LWRS) ...

  7. CONNECTED LIGHTING SYSTEMS RESOURCES | Department of Energy

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

    CONNECTED LIGHTING SYSTEMS RESOURCES CONNECTED LIGHTING SYSTEMS RESOURCES The following resources provide information about outdoor lighting control systems. 2014 Presentation:...

  8. Advanced Light Extraction Material for OLED Lighting | Department of Energy

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

    Light Extraction Material for OLED Lighting Advanced Light Extraction Material for OLED Lighting Lead Performer: Pixelligent Technologies LLC - Baltimore, MD Partners: OLEDWorks LLC DOE Total Funding: $1,000,000 Project Term: April 6, 2015 - April 5, 2017 Funding Opportunity: FY2015 Phase II Release 1 SBIR Awards PROJECT OBJECTIVE The primary goal of this Phase II project is to develop a viable commercial process to manufacture an internal light extraction (ILE) layer to be supplied to OLED

  9. Demonstration Assessment of Light-Emitting Diode Parking Structure Lighting

    Office of Scientific and Technical Information (OSTI)

    at U.S. Department of Labor Headquarters (Technical Report) | SciTech Connect Demonstration Assessment of Light-Emitting Diode Parking Structure Lighting at U.S. Department of Labor Headquarters Citation Details In-Document Search Title: Demonstration Assessment of Light-Emitting Diode Parking Structure Lighting at U.S. Department of Labor Headquarters This report documents a solid-state lighting (SSL) technology demonstration at the parking structure of the U.S. Department of Labor (DOL)

  10. Connected Lighting Systems Workshop | Department of Energy

    Energy Savers [EERE]

    Lighting Systems Workshop Connected Lighting Systems Workshop 2016 Connected Lighting Systems Workshop Agenda.pdf (373.88 KB) More Documents & Publications Connected Lighting ...

  11. Demonstration Assessment of LED Roadway Lighting: Philadelphia...

    Office of Scientific and Technical Information (OSTI)

    LED Roadway Lighting: Philadelphia, PA Royer, Michael P.; Tuenge, Jason R.; Poplawski, Michael E. Roadway Lighting; Solid-state lighting; LED lighting; SSL; LED; GATEWAY Roadway...

  12. Lighting Principles and Terms | Department of Energy

    Energy Savers [EERE]

    Principles and Terms Lighting Principles and Terms Light quantity, energy consumption, and light quality are the basic principles of lighting. | Photo courtesy of

  13. Solid State Lighting

    SciTech Connect (OSTI)

    Hastbacka, Mildred; Dieckmann, John; Bouza, Antonio

    2013-03-30

    The article discusses solid state lighting technologies. This topic was covered in two previous ASHRAE Journal columns (2010). This article covers advancements in technologies and the associated efficacies. The life-cycle, energy savings and market potential of these technologies are addressed as well.

  14. Light water reactor program

    SciTech Connect (OSTI)

    Franks, S.M.

    1994-12-31

    The US Department of Energy`s Light Water Reactor Program is outlined. The scope of the program consists of: design certification of evolutionary plants; design, development, and design certification of simplified passive plants; first-of-a-kind engineering to achieve commercial standardization; plant lifetime improvement; and advanced reactor severe accident program. These program activities of the Office of Nuclear Energy are discussed.

  15. The Betz Prairie Turns 40: Lessons Learned and What You Didn't Know About Current

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

    Betz Prairie Turns 40: Lessons Learned and What You Didn't Know About Current Ecological Land Management at Fermilab Ryan E. Campbell Fermilab September 30, 2015 4:00 p.m. Fermilab is a 6,800 acre US Department of Energy physics laboratory located 35 miles west of Chicago. Amongst the accelerators are over 2,500 acres of grasslands, woodlands and wetlands. Fermilab is where Dr. Robert F. Betz began his large-scale prairie reconstruction project in 1975. This case study will present lessons

  16. Combustion Safety for Appliances Using Indoor Air (Fact Sheet), Building America Case Study: Technology Solutions for New and Existing Homes, Building Technologies Office (BTO)

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

    Combustion Safety for Appliances Using Indoor Air PROJECT INFORMATION Project Name: Combustion Safety for Appliances Using Indoor Air Partners: American Gas Association www.aga.org Center of Energy and Environment www.mncee.org Building Performance Institute www.bpi.org NorthernSTAR Building America Partnership Partnership for Advanced Residential Retrofit www.gastechnology.org/PARR Building Components: Gas Appliances Application: Retrofit Single Family Year Tested: 2013 Applicable Climate

  17. Fluorescent Lighting | Department of Energy

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

    Electricity & Fuel » Lighting » Fluorescent Lighting Fluorescent Lighting Fluorescent Lighting Fluorescent lamps use 25%-35% of the energy used by incandescent products to provide a similar amount of light. They also last about 10 times longer (7,000-24,000 hours). The two general types of fluorescent lamps are: Compact fluorescent lamps (CFLs) -- commonly found with integral ballasts and screw bases, these are popular lamps often used in household fixtures Fluorescent tube and circline

  18. Discrete magic angle turning system, apparatus, and process for in situ magnetic resonance spectroscopy and imaging

    DOE Patents [OSTI]

    Hu, Jian Zhi; Sears, Jr., Jesse A.; Hoyt, David W.; Wind, Robert A.

    2009-05-19

    Described are a "Discrete Magic Angle Turning" (DMAT) system, devices, and processes that combine advantages of both magic angle turning (MAT) and magic angle hopping (MAH) suitable, e.g., for in situ magnetic resonance spectroscopy and/or imaging. In an exemplary system, device, and process, samples are rotated in a clockwise direction followed by an anticlockwise direction of exactly the same amount. Rotation proceeds through an angle that is typically greater than about 240 degrees but less than or equal to about 360 degrees at constant speed for a time applicable to the evolution dimension. Back and forth rotation can be synchronized and repeated with a special radio frequency (RF) pulse sequence to produce an isotropic-anisotropic shift 2D correlation spectrum. The design permits tubes to be inserted into the sample container without introducing plumbing interferences, further allowing control over such conditions as temperature, pressure, flow conditions, and feed compositions, thus permitting true in-situ investigations to be carried out.

  19. SNS 2.1K Cold Box Turn-down Studies

    SciTech Connect (OSTI)

    F. Casagrande; P.A. Gurd; D.R. Hatfield; M.P. Howell; W.H. Strong; D. Arenius; J. Creel; V. Ganni; P. Knudsen

    2006-06-26

    The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory is nearing completion. The cold section of the Linac consists of 81 superconducting radio frequency cavities cooled to 2.1K by a 2400 watt cryogenic refrigeration system. The 2.1K cold box consists of four stages of centrifugal compressors with LN2-cooled variable speed electric motors and magnetic bearings. The cryogenic system successfully supported the Linac beam commissioning at both 4.2K and 2.1K and has been fully operational since June 2005. This paper describes the control principles utilized and the experimental results obtained for the SNS cold compressors turn-down capability to about 30% of the design flow, and possible limitation of the frequency dependent power factor of the cold compressor electric motors, which was measured for the first time during commissioning. These results helped to support the operation of the Linac over a very broad and stable cold compressor operating flow range (refrigeration capacity) and pressure. This in turn helped to optimize the cryogenic system operating parameters, minimizing the utilities and improving the system reliability and availability.

  20. Fusion pumped light source

    DOE Patents [OSTI]

    Pappas, Daniel S.

    1989-01-01

    Apparatus is provided for generating energy in the form of light radiation. A fusion reactor is provided for generating a long, or continuous, pulse of high-energy neutrons. The neutron flux is coupled directly with the lasing medium. The lasing medium includes a first component selected from Group O of the periodic table of the elements and having a high inelastic scattering cross section. Gamma radiation from the inelastic scattering reactions interacts with the first component to excite the first component, which decays by photon emission at a first output wavelength. The first output wavelength may be shifted to a second output wavelength using a second liquid component responsive to the first output wavelength. The light outputs may be converted to a coherent laser output by incorporating conventional optics adjacent the laser medium.

  1. Scattering Of Light Nuclei

    SciTech Connect (OSTI)

    Quaglioni, S; Navratil, P; Roth, R

    2009-12-15

    The exact treatment of nuclei starting from the constituent nucleons and the fundamental interactions among them has been a long-standing goal in nuclear physics. Above all nuclear scattering and reactions, which require the solution of the many-body quantum-mechanical problem in the continuum, represent an extraordinary theoretical as well as computational challenge for ab initio approaches.We present a new ab initio many-body approach which derives from the combination of the ab initio no-core shell model with the resonating-group method [4]. By complementing a microscopic cluster technique with the use of realistic interactions, and a microscopic and consistent description of the nucleon clusters, this approach is capable of describing simultaneously both bound and scattering states in light nuclei. We will discuss applications to neutron and proton scattering on sand light p-shell nuclei using realistic nucleon-nucleon potentials, and outline the progress toward the treatment of more complex reactions.

  2. Materials processing with light

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

    Materials processing with light, plasmas and other sources of energy At the ARC various processing technologies are used to create materials, struc- tures, and devices that play an increasingly important role in high value-added manufacturing of computer and communications equipment, physical and chemical sensors, biomedical instruments and treatments, semiconductors, thin films, photovoltaics, electronic components and optical components. For example, making coatings, including paint, chrome,

  3. Health and productivity gains from better indoor environments and their implications for the U.S. Department of Energy

    SciTech Connect (OSTI)

    Fisk, William J.

    2000-10-01

    A substantial portion of the US population suffers frequently from communicable respiratory illnesses, allergy and asthma symptoms, and sick building syndrome symptoms. We now have increasingly strong evidence that changes in building design, operation, and maintenance can significantly reduce these illnesses. Decreasing the prevalence or severity of these health effects would lead to lower health care costs, reduced sick leave, and shorter periods of illness-impaired work performance, resulting in annual economic benefits for the US in the tens of billions of dollars. Increasing the awareness of these potential health and economic gains, combined with other factors, could help bring about a shift in the way we design, construct, operate, and occupy buildings. The current goal of providing marginally adequate indoor environments could be replaced by the goal of providing indoor environments that maximize the health, satisfaction, and performance of building occupants. Through research and technology transfer, DOE and its contractors are well positioned to help stimulate this shift in practice and, consequently, improve the health and economic well-being of the US population. Additionally, DOE's energy-efficiency interests would be best served by a program that prepares for the potential shift, specifically by identifying and promoting the most energy-efficient methods of improving the indoor environment. The associated research and technology transfer topics of particular relevance to DOE are identified and discussed.

  4. 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

  5. Reading Municipal Light Department- Commercial Lighting Retrofit Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Reading Municipal Light Department (RMLD) offers incentives for non-residential customers to install energy-efficient lighting and sensors in existing facilities. Rebates are limited to $20,000 per...

  6. SSL EVALUATION: OLED Lighting in the Offices of Aurora Lighting...

    Energy Savers [EERE]

    EVALUATION: OLED Lighting in the Offices of Aurora Lighting Design, Inc. The first GATEWAY demonstra- tion involving OLEDs is also the first office test site for the use of OLEDs ...

  7. Making fuel from light: Argonne research sheds light on photosynthesis...

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

    Making fuel from light: Argonne research sheds light on photosynthesis and creation of solar fuel By Jo Napolitano * September 1, 2015 Tweet EmailPrint Refined by nature over a ...

  8. Luminescent Concentration of Diffuse Light

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

    Lumens and the Lighting Facts Label Lumens and the Lighting Facts Label Energy 101 Lumens: The new way to shop for light lighting_sub.jpg When you're shopping for lightbulbs, compare lumens to be sure you're getting the amount of light, or level of brightness, you want. The Lighting Facts Label will help. This new label will make it easy to compare bulb brightness, color, life, and estimated operating cost for the year. Buy Lumens, Not Watts In the past, we bought lightbulbs based on how much

  9. A NEW CONCEPTUAL DESIGN OF THE SNS FULL TURN FAST EXTRACTION KICKER POWER SUPPLY SYSTEM.

    SciTech Connect (OSTI)

    ZHANG,W.; SANDBERG,J.; TSOUPAS,N.; MI,J.; LAMBIASE,R.; PAI,C.; TUOZZOLO,J.; NEHRING,T.; WARBURTON,D.

    2001-06-18

    The new conceptual design of full turn fast extraction kicker power supply system of the Spallation Neutron Source main ring will be presented in this paper. In this design, the extraction kicker power modulators will be located outside of the tunnel, as requested by the SNS Project. Its purpose is to minimize the components inside of the synchrotron tunnel. The high voltage modulator will use Blumlein pulser and hollow-anode thyratron structure, a parallel termination resistor and two transmission cables. Main advantages include: flexible system configuration for unipolar single drive or push-pull double drive of the kicker magnets, lower charging voltage, lower beam impedance, lower number of high voltage cables, and large design margin for implementation and future upgrade.

  10. REDUCTIONS WITHOUT REGRET: AVOIDING WRONG TURNS, ROACH MOTELS, AND BOX CANYONS

    SciTech Connect (OSTI)

    Swegle, J.; Tincher, D.

    2013-09-11

    This is the third of three papers (in addition to an introductory summary) aimed at providing a framework for evaluating future reductions or modifications of the U.S. nuclear force, first by considering previous instances in which nuclear-force capabilities were eliminated; second by looking forward into at least the foreseeable future at the features of global and regional deterrence (recognizing that new weapon systems currently projected will have expected lifetimes stretching beyond our ability to predict the future); and third by providing examples of past or possible undesirable outcomes in the shaping of the future nuclear force, as well as some closing thoughts for the future. In this paper, we provide one example each of our judgments on what constitutes a box canyon, a roach motel, and a wrong turn: � Wrong Turn: The Reliable Replacement Warhead � Roach Motel: SRAM T vs the B61 � A Possible Box Canyon: A Low-Yield Version of the W76 SLBM Warhead Recognizing that new nuclear missions or weapons are not demanded by current circumstances � a development path that yields future capabilities similar to those of today, which are adequate if not always ideal, and a broader national-security strategy that supports nonproliferation and arms control by reducing the role for, and numbers, of nuclear weapons � we briefly consider alternate, less desirable futures, and their possible effect on the complex problem of regional deterrence. In this regard, we discuss the issues posed by, and possible responses to, three example regional deterrence challenges: in-country defensive use of nuclear weapons by an adversary; reassurance of U.S. allies with limited strategic depth threatened by an emergent nuclear power; and extraterritorial, non-strategic offensive use of nuclear weapons by an adversary in support of limited military objectives against a U.S. ally.

  11. Indoor Chemical Exposures: Humans' Non-respiratory Interactions with Room Air

    ScienceCinema (OSTI)

    Charles Weschler

    2010-09-01

    March 18, 2010 Berkeley Lab Environmental Energy Technology Division distinguished lecture: The marked difference in pollutant concentrations between an occupied and un-occupied room are only partially explained by human bio-effluents. Humans alter levels of ozone and related oxidants such as nitrate and hydroxyl radicals in the rooms they inhabit; in effect, they change the oxidative capacity of room air. Ozone-initiated reactions on exposed skin, hair and clothing generate products, including potentially irritating chemicals whose concentrations are much higher in the occupant's breathing zone than in the core of the room. Charles J. Weschler is a Professor at the School of Public Health, the Department of Environmental and Occupational Medicine and the Environmental and Occupational Health Sciences Institute (EOHSI) at the University of Medicine and Dentistry of New Jersey (UMDNJ)/Robert Wood Johnson Medical School & Rutgers University (New Jersey). He is also a Visiting Professor at the International Centre for Indoor Environment and Energy, Technical University of Denmark (DTU, Lyngby, Denmark).

  12. Using a Ventilation Controller to Optimize Residential Passive Ventilation For Energy and Indoor Air Quality

    SciTech Connect (OSTI)

    Turner, William; Walker, Iain

    2014-08-01

    One way to reduce the energy impact of providing residential ventilation is to use passive and hybrid systems. However, these passive and hybrid (sometimes called mixed-mode) systems must still meet chronic and acute health standards for ventilation. This study uses a computer simulation approach to examine the energy and indoor air quality (IAQ) implications of passive and hybrid ventilation systems, in 16 California climate zones. Both uncontrolled and flow controlled passive stacks are assessed. A new hybrid ventilation system is outlined that uses an intelligent ventilation controller to minimise energy use, while ensuring chronic and acute IAQ standards are met. ASHRAE Standard 62.2-2010 – the United States standard for residential ventilation - is used as the chronic standard, and exposure limits for PM2.5, formaldehyde and NO2 are used as the acute standards.The results show that controlled passive ventilation and hybrid ventilation can be used in homes to provide equivalent IAQ to continuous mechanical ventilation, for less use of energy.

  13. Indoor Chemical Exposures: Humans' Non-respiratory Interactions with Room Air

    SciTech Connect (OSTI)

    Charles Weschler

    2010-03-29

    March 18, 2010 Berkeley Lab Environmental Energy Technology Division distinguished lecture: The marked difference in pollutant concentrations between an occupied and un-occupied room are only partially explained by human bio-effluents. Humans alter levels of ozone and related oxidants such as nitrate and hydroxyl radicals in the rooms they inhabit; in effect, they change the oxidative capacity of room air. Ozone-initiated reactions on exposed skin, hair and clothing generate products, including potentially irritating chemicals whose concentrations are much higher in the occupant's breathing zone than in the core of the room. Charles J. Weschler is a Professor at the School of Public Health, the Department of Environmental and Occupational Medicine and the Environmental and Occupational Health Sciences Institute (EOHSI) at the University of Medicine and Dentistry of New Jersey (UMDNJ)/Robert Wood Johnson Medical School & Rutgers University (New Jersey). He is also a Visiting Professor at the International Centre for Indoor Environment and Energy, Technical University of Denmark (DTU, Lyngby, Denmark).

  14. Building America Case Study: Ventilation System Effectiveness and Tested Indoor Air Quality Impacts, Tyler, Texas

    SciTech Connect (OSTI)

    2015-08-01

    ?Ventilation system effectiveness testing was conducted at two unoccupied, single-family, detached lab homes at the University of Texas - Tyler. Five ventilation system tests were conducted with various whole-building ventilation systems. Multizone fan pressurization testing characterized building and zone enclosure leakage. PFT testing showed multizone air change rates and interzonal airflow filtration. Indoor air recirculation by a central air distribution system can help improve the exhaust ventilation system by way of air mixing and filtration. In contrast, the supply and balanced ventilation systems showed that there is a significant benefit to drawing outside air from a known outside location, and filtering and distributing that air. Compared to the Exhaust systems, the CFIS and ERV systems showed better ventilation air distribution and lower concentrations of particulates, formaldehyde and other VOCs. System improvement percentages were estimated based on four System Factor Categories: Balance, Distribution, Outside Air Source, and Recirculation Filtration. Recommended System Factors could be applied to reduce ventilation fan airflow rates relative to ASHRAE Standard 62.2 to save energy and reduce moisture control risk in humid climates. HVAC energy savings were predicted to be 8-10%, or $50-$75/year. Cumulative particle counts for six particle sizes, and formaldehyde and other Top 20 VOC concentrations were measured in multiple zones. The testing showed that single-point exhaust ventilation was inferior as a whole-house ventilation strategy.

  15. Towards improved characterization of high-risk releases using heterogeneous indoor sensor systems

    SciTech Connect (OSTI)

    Sreedharan, Priya; Sohn, Michael D.; Nazaroff, William W.; J. Gadgil, Ashok

    2010-06-30

    The sudden release of toxic contaminants that reach indoor spaces can be hazardous to building occupants. For an acutely toxic contaminant, the speed of the emergency response strongly influences the consequences to occupants. The design of a real time sensor system is made challenging both by the urgency and complex nature of the event, and by the imperfect sensors and models available to describe it. In this research, we use Bayesian modeling to combine information from multiple types of sensors to improve the characterization of a release. We discuss conceptual and algorithmic considerations for selecting and fusing information from disparate sensors. To explore system performance, we use both real tracer gas data from experiments in a three story building, along with synthetic data, including information from door position sensors. The added information from door position sensors is found to be useful for many scenarios, but not always. We discuss the physical conditions and design factors that affect these results, such as the influence of the door positions on contaminant transport. We highlight potential benefits of multisensor data fusion, challenges in realizing those benefits, and opportunities for further improvement.

  16. Solar lighting | Open Energy Information

    Open Energy Info (EERE)

    only need to place the lights in a sunny location. Others have the lights separate from a solar cell panel. Only the panel needs to be placed in a sunny location. Units vary in...

  17. LED Lighting | Department of Energy

    Office of Environmental Management (EM)

    comparable or better light quality than other types of lighting. Check out the top 8 things you didn't know about LEDs to learn more. Energy Savings LED is a highly energy...

  18. Photodetector with enhanced light absorption

    DOE Patents [OSTI]

    Kane, James

    1985-01-01

    A photodetector including a light transmissive electrically conducting layer having a textured surface with a semiconductor body thereon. This layer traps incident light thereby enhancing the absorption of light by the semiconductor body. A photodetector comprising a textured light transmissive electrically conducting layer of SnO.sub.2 and a body of hydrogenated amorphous silicon has a conversion efficiency about fifty percent greater than that of comparative cells. The invention also includes a method of fabricating the photodetector of the invention.

  19. Coherent white light amplification

    DOE Patents [OSTI]

    Jovanovic, Igor; Barty, Christopher P.

    2004-05-25

    A system for coherent simultaneous amplification of a broad spectral range of light that includes an optical parametric amplifier and a source of a seed pulse is described. A first angular dispersive element is operatively connected to the source of a seed pulse. A first imaging telescope is operatively connected to the first angular dispersive element and operatively connected to the optical parametric amplifier. A source of a pump pulse is operatively connected to the optical parametric amplifier. A second imaging telescope is operatively connected to the optical parametric amplifier and a second angular dispersive element is operatively connected to the second imaging telescope.

  20. Pedestrian Friendly Outdoor Lighting

    SciTech Connect (OSTI)

    Miller, Naomi J.; Koltai, Rita; McGowan, Terry

    2013-12-31

    This GATEWAY report discusses the problems of pedestrian lighting that occur with all technologies with a focus on the unique optical options and opportunities offered by LEDs through the findings from two pedestrian-focused projects, one at Stanford University in California, and one at the Chautauqua Institution in upstate New York. Incorporating user feedback this report reviews the tradeoffs that must be weighed among visual comfort, color, visibility, efficacy and other factors to stimulate discussion among specifiers, users, energy specialists, and in industry in hopes that new approaches, metrics, and standards can be developed to support pedestrian-focused communities, while reducing energy use.

  1. Moisture sensor based on evanescent wave light scattering by porous sol-gel silica coating

    DOE Patents [OSTI]

    Tao, Shiquan; Singh, Jagdish P.; Winstead, Christopher B.

    2006-05-02

    An optical fiber moisture sensor that can be used to sense moisture present in gas phase in a wide range of concentrations is provided, as well techniques for making the same. The present invention includes a method that utilizes the light scattering phenomenon which occurs in a porous sol-gel silica by coating an optical fiber core with such silica. Thus, a porous sol-gel silica polymer coated on an optical fiber core forms the transducer of an optical fiber moisture sensor according to an embodiment. The resulting optical fiber sensor of the present invention can be used in various applications, including to sense moisture content in indoor/outdoor air, soil, concrete, and low/high temperature gas streams.

  2. Electroluminescence property of organic light emitting diode (OLED)

    SciTech Connect (OSTI)

    zdemir, Orhan; Kavak, Pelin; Saatci, A. Evrim; Gkdemir, F. P?nar; Menda, U. Deneb; Can, Nursel; Kutlu, Kubilay; Tekin, Emine; Pravadal?, Selin

    2013-12-16

    Transport properties of electrons and holes were investigated not only in a anthracene-containing poly(p-phenylene-ethynylene)- alt - poly(p-phenylene-vinylene) (PPE-PPV) polymer (AnE-PVstat) light emitting diodes (OLED) but also in an ITO/Ag/polymer/Ag electron and ITO/PEDOT:PSS/polymer/Au hole only devices. Mobility of injected carriers followed the Poole-Frenkel type conduction mechanism and distinguished in the frequency range due to the difference of transit times in admittance measurement. Beginning of light output took place at the turn-on voltage (or flat band voltage), 1.8 V, which was the difference of energy band gap of polymer and two barrier offsets between metals and polymer.

  3. WaterSense Program: Methodology for National Water Savings Analysis Model Indoor Residential Water Use

    SciTech Connect (OSTI)

    Whitehead, Camilla Dunham; McNeil, Michael; Dunham_Whitehead, Camilla; Letschert, Virginie; della_Cava, Mirka

    2008-02-28

    The U.S. Environmental Protection Agency (EPA) influences the market for plumbing fixtures and fittings by encouraging consumers to purchase products that carry the WaterSense label, which certifies those products as performing at low flow rates compared to unlabeled fixtures and fittings. As consumers decide to purchase water-efficient products, water consumption will decline nationwide. Decreased water consumption should prolong the operating life of water and wastewater treatment facilities.This report describes the method used to calculate national water savings attributable to EPA?s WaterSense program. A Microsoft Excel spreadsheet model, the National Water Savings (NWS) analysis model, accompanies this methodology report. Version 1.0 of the NWS model evaluates indoor residential water consumption. Two additional documents, a Users? Guide to the spreadsheet model and an Impacts Report, accompany the NWS model and this methodology document. Altogether, these four documents represent Phase One of this project. The Users? Guide leads policy makers through the spreadsheet options available for projecting the water savings that result from various policy scenarios. The Impacts Report shows national water savings that will result from differing degrees of market saturation of high-efficiency water-using products.This detailed methodology report describes the NWS analysis model, which examines the effects of WaterSense by tracking the shipments of products that WaterSense has designated as water-efficient. The model estimates market penetration of products that carry the WaterSense label. Market penetration is calculated for both existing and new construction. The NWS model estimates savings based on an accounting analysis of water-using products and of building stock. Estimates of future national water savings will help policy makers further direct the focus of WaterSense and calculate stakeholder impacts from the program.Calculating the total gallons of water the

  4. Light modulating device

    DOE Patents [OSTI]

    Rauh, R. David; Goldner, Ronald B.

    1989-01-01

    In a device for transmitting light, means for controlling the transmissivity of the device, including a ceramic, reversibly electrochromic, crystalline element having a highly reflective state when injected with electrons and charge compensating ions and a highly transmissive state when the electrons and ions are removed, the crystalline element being characterized as having a reflectivity of at least 50% in the reflective state and not greater than 10% in the transmissive state, and means for modulating the crystalline element between the reflective and transmissive states by injecting ions into the crystalline element in response to an applied electrical current of a first polarity and removing the ions in response to an applied electrical current of a second polarity.

  5. Directed light fabrication

    SciTech Connect (OSTI)

    Lewis, G.K.; Nemec, R.; Milewski, J.; Thoma, D.J.; Cremers, D.; Barbe, M.

    1994-09-01

    Directed Light Fabrication (DLF) is a rapid prototyping process being developed at Los Alamos National Laboratory to fabricate metal components. This is done by fusing gas delivered metal powder particles in the focal zone of a laser beam that is, programmed to move along or across the part cross section. Fully dense metal is built up a layer at a time to form the desired part represented by a 3 dimensional solid model from CAD software. Machine ``tool paths`` are created from the solid model that command the movement and processing parameters specific to the DLF process so that the part can be built one layer at a time. The result is a fully dense, near net shape metal part that solidifies under rapid solidification conditions.

  6. Light modulating device

    DOE Patents [OSTI]

    Rauh, R.D.; Goldner, R.B.

    1989-12-26

    In a device for transmitting light, means for controlling the transmissivity of the device, including a ceramic, reversibly electrochromic, crystalline element having a highly reflective state when injected with electrons and charge compensating ions and a highly transmissive state when the electrons and ions are removed, the crystalline element being characterized as having a reflectivity of at least 50% in the reflective state and not greater than 10% in the transmissive state, and means for modulating the crystalline element between the reflective and transmissive states by injecting ions into the crystalline element in response to an applied electrical current of a first polarity and removing the ions in response to an applied electrical current of a second polarity are disclosed. 1 fig.

  7. Philips Lumileds Lighting Co | Open Energy Information

    Open Energy Info (EERE)

    of high-power LEDs and solid-state lighting solutions for automotive lighting, computer displays, LCD televisions, signs and signaling and architectural lighting....

  8. Universal Lighting Technologies | Open Energy Information

    Open Energy Info (EERE)

    Lighting Technologies Jump to: navigation, search Name: Universal Lighting Technologies Place: Nashville, Tennessee Zip: 37214-3683 Product: Universal Lighting Technologies...

  9. Lighting Control Types | Department of Energy

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

    Lighting Control Types Lighting Control Types Characteristics of the most common lighting controls for offices and other public buildings are outlined below. Also provided is a ...

  10. Detroit Public Lighting Department - Commercial and Industrial...

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

    PublicLightingEnergyWis... Expiration Date 11302012 State Michigan Program Type Rebate Program Rebate Amount Light Fixtures: 2-130 Lighting Controls: 0.10-65...

  11. 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...

  12. OLED Lighting Products Webinar Presentation Slides | Department...

    Energy Savers [EERE]

    OLED Lighting Products Webinar Presentation Slides OLED Lighting Products Webinar Presentation Slides OLED-Lighting-Products-Webinar7-28-16.pdf (2.23 MB) More Documents & ...

  13. Emerging Lighting Technology | Department of Energy

    Energy Savers [EERE]

    Emerging Lighting Technology Emerging Lighting Technology Presentation covers emergying light technologies and is given at the Spring 2011 Federal Utility Partnership Working Group ...

  14. Lighting Principles and Terms | Department of Energy

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

    Light quantity, energy consumption, and light quality are the basic principles of lighting. | Photo courtesy of

  15. Advanced Lighting Systems | Open Energy Information

    Open Energy Info (EERE)

    Minnesota Zip: 56378 Product: Advanced Lighting Systems (ALS) provides a number of LED and fiber optic lighting solutions. It was acquired by Nexxus Lighting in September...

  16. Silescent Lighting Corp | Open Energy Information

    Open Energy Info (EERE)

    Lighting Corp Place: Fort Lauderdale, Florida Zip: 33315 Product: Florida-based LED lighting fixtures maker. References: Silescent Lighting Corp1 This article is a stub....

  17. Hull Municipal Light Plant | Open Energy Information

    Open Energy Info (EERE)

    Hull Municipal Light Plant Jump to: navigation, search Logo: Hull Municipal Light Plant Name: Hull Municipal Light Plant Place: Massachusetts Phone Number: 781-925-0051 Website:...

  18. Light at Night and Human Health

    SciTech Connect (OSTI)

    2010-01-01

    Solid-state lighting program technology fact sheet that discusses potential health implications of light at night (LAN) exposure and how it may affect lighting practice and design.

  19. Optimization of Ventilation Energy Demands and Indoor Air Quality in the ZEBRAlliance Homes

    SciTech Connect (OSTI)

    Hun, D.; Jackson, M.; Shrestha, S.

    2013-09-01

    High-performance homes require that ventilation energy demands and indoor air quality (IAQ) be simultaneously optimized. In this project, Oak Ridge National Laboratory researchers attempted to bridge these two areas by conducting tests in research houses located in Oak Ridge, TN, that were less than 2 years old, energy-efficient (i.e., expected to consume 50% less energy than a house built per the 2006 IRC), tightly-built, unoccupied, and unfurnished. The team identified air pollutants of concern in the test homes that could generally serve as indicators of IAQ, and conduced field experiments and computer simulations to determine the effectiveness and energy required by various techniques that lessened the concentration of these contaminants. Formaldehyde was selected as the main pollutant of concern from initial air sampling surveys. Field data indicate that concentrations were higher during the summer primarily because emissions from sources rise with increases in temperature. Furthermore, supply ventilation and gas-phase filtration were effective means to reduce formaldehyde concentrations; however, exhaust ventilation had minimal influence on this pollutant. Results from simulations suggest that formaldehyde concentrations obtained while ventilating per ASHRAE 62.2-2010 could be decreased by about 20% from May through September through three strategies: 1) increasing ASHRAE supply ventilation by a factor of two, 2) reducing the thermostat setpoint from 76 to 74°F, or 3) running a gas-phase filtration system while decreasing supply ventilation per ASHRAE by half. In the mixed-humid climate of Oak Ridge, these strategies caused minimal to modest increases in electricity cost of ~$5 to ~$15/month depending on outdoor conditions.

  20. Optimization of Ventilation Energy Demands and Indoor Air Quality in High-Performance Homes

    SciTech Connect (OSTI)

    Hun, Diana E; Jackson, Mark C; Shrestha, Som S

    2014-01-01

    High-performance homes require that ventilation energy demands and indoor air quality (IAQ) be simultaneously optimized. We attempted to bridge these two areas by conducting tests in a research house located in Oak Ridge, TN, that was 20 months old, energy-efficient (i.e., expected to consume 50% less energy than a house built per the 2006 IRC), tightly-built (i.e., natural ventilation rate ~0.02 h-1), unoccupied, and unfurnished. We identified air pollutants of concern in the test home that could generally serve as indicators of IAQ, and conduced field experiments and computer simulations to determine the effectiveness and energy required by various techniques that lessened the concentration of these contaminants. Formaldehyde was selected as the main pollutant of concern among the contaminants that were sampled in the initial survey because it was the only compound that showed concentrations that were greater than the recommended exposure levels. Field data indicate that concentrations were higher during the summer primarily because emissions from sources rise with increases in temperature. Furthermore, supply ventilation and gas-phase filtration were effective means to reduce formaldehyde concentrations; however, exhaust ventilation had minimal influence on this pollutant. Results from simulations suggest that formaldehyde concentrations obtained while ventilating per ASHRAE 62.2-2010 could be decreased by about 20% from May through September through three strategies: 1) increasing ASHRAE supply ventilation by a factor of two, 2) reducing the thermostat setpoint from 76 to 74 F, or 3) running a gas-phase filtration system while decreasing supply ventilation per ASHRAE by half. In the mixed-humid climate of Oak Ridge, these strategies caused increases in electricity cost of ~$5 to ~$15/month depending on outdoor conditions.

  1. Air Gaps, Size Effect, and Corner-Turning in Ambient LX-17

    SciTech Connect (OSTI)

    Souers, P C; Hernandez, A; Cabacungan, C; Fried, L; Garza, R; Glaesemann, K; Lauderbach, L; Liao, S; Vitello, P

    2008-02-05

    Various ambient measurements are presented for LX-17. The size (diameter) effect has been measured with copper and Lucite confinement, where the failure radii are 4.0 and 6.5 mm, respectively. The air well corner-turn has been measured with an LX-07 booster, and the dead-zone results are comparable to the previous TATB-boosted work. Four double cylinders have been fired, and dead zones appear in all cases. The steel-backed samples are faster than the Lucite-backed samples by 0.6 {micro}s. Bare LX-07 and LX-17 of 12.7 mm-radius were fired with air gaps. Long acceptor regions were used to truly determine if detonation occurred or not. The LX-07 crossed at 10 mm with a slight time delay. Steady state LX-17 crossed at 3.5 mm gap but failed to cross at 4.0 mm. LX-17 with a 12.7 mm run after the booster crossed a 1.5 mm gap but failed to cross 2.5 mm. Timing delays were measured where the detonation crossed the gaps. The Tarantula model is introduced as embedded in 0 reactive flow JWL++ and Linked Cheetah V4, mostly at 4 zones/mm. Tarantula has four pressure regions: off, initiation, failure and detonation. The physical basis of the input parameters is considered.

  2. Adoption of Light-Emitting Diodes in Common Lighting Applications

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

    Adoption of Light-Emitting Diodes in Common Lighting Applications Prepared for the U.S. Department of Energy Solid-State Lighting Program July 2015 Prepared by Navigant This page intentionally left blank i | P a g e Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government, nor any agency thereof, nor any of their employees, nor any of their contractors, subcontractors, or their employees, makes any

  3. Advanced Light Extraction Structure for OLED Lighting | Department of

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

    Energy Pixelligent Technologies, LLC - Baltimore, MD Partner: OLEDWorks, LLC - Rochester, NY DOE Total Funding: $1,000,000 Cost Share: $250,000 Project Term: September 10, 2014 - August 31, 2016 Funding Opportunity: SSL R&D Funding Opportunity Announcement (FOA) (DE-FOA-0000973) Project Objective This project will develop a novel internal light extraction (ILE) design to improve the light extraction efficiency of OLED lighting devices to 70% without negatively impacting the device

  4. Solar optics: light as energy; energy as light

    SciTech Connect (OSTI)

    Bennett, D.J.; Eijadi, D.A.

    1980-05-01

    a prominent characteristic of earth-sheltered and underground buildings, as well as buildings designed to accommodate more uses within the same perimeters, is the prominence of interior space without direct access to natural light and view opportunities. Solar Optics, a technique for illuminating interior spaces with natural light, offers a way to satisfy the well-documented human affinity for natural light. The system, which uses a heliostat to track the sun and lenses and mirrors to direct the light to remote interior spaces, is more efficient than converting solar radiation into electricity. Through the use of cold mirrors, it is also possible to separate the infrared portion of the spectrum from visible light, thereby creating a cool light source that can reduce a building's space cooling demand. Solar Optics also offers energy savings by transmitting light through a small aperture, as opposed to a large window. Several design problems must still be addressed. The system will be demonstrated in a new building at the University of Minnesota. Because this is a limited demonstration, it does not include the integration of a natural light system with a central source light system...another promising application of Solar Optics.

  5. LED Lighting Facts/CALiPER Snapshot. Outdoor Ambient Lighting

    SciTech Connect (OSTI)

    2013-07-01

    Snapshot reports reveal how today's products really perform, drawing on analysis of verified performance data from the LED Lighting Facts program's online product list.

  6. Radioluminescent lighting for Alaskan runway lighting and marking

    SciTech Connect (OSTI)

    Jensen, G.A.; Leonard, L.E.

    1985-03-01

    Alaska and other far northern areas have special logistical, environmental, and economic problems that make radioluminescent (RL) lighting applications, especially in the area of airport lighting, an attractive alternative to electrical systems and flare pots. Tests and demonstrations of prototype systems conducted in Alaska over the past two years have proved the basic technological worth of RL airport lighting systems for civilian and military use. If regulatory issues and other factors identified during these tests can be favorably resolved and if the system and its components can be refined through production engineering, attractive applications for RL airfield lighting systems in Alaska and other remote locations could result.

  7. Table lamp with dynamically controlled lighting distribution and uniformly illuminated luminous shade

    DOE Patents [OSTI]

    Siminovitch, Michael J.; Page, Erik R.

    2002-01-01

    A double lamp table or floor lamp lighting system has a pair of compact fluorescent lamps (CFLs) or other lamps arranged vertically, i.e. one lamp above the other, with a reflective septum in between. By selectively turning on one or both of the CFLs, down lighting, up lighting, or both up and down lighting is produced. The control system can also vary the light intensity from each CFL. The reflective septum ensures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user. In a particular configuration, the reflective septum is bowl shaped, with the upper CFL sitting in the bowl, and a luminous shade hanging down from the bowl. The lower CFL provides both task lighting and uniform shade luminance. Planar compact fluorescent lamps, e.g. circular CFLs, particularly oriented horizontally, are preferable. CFLs provide energy efficiency. However, other types of lamps, including incandescent, halogen, and LEDs can also be used in the fixture. The lighting system may be designed for the home, hospitality, office or other environments.

  8. ION MANIPULATIONS IN STRUCTURES FOR LOSSLESS ION MANIPULATIONS (SLIM): COMPUTATIONAL EVALUATION OF A 90o TURN AND A SWITCH

    SciTech Connect (OSTI)

    Garimella, Venkata BS; Ibrahim, Yehia M.; Webb, Ian K.; Ipsen, Andreas B.; Chen, Tsung-Chi; Tolmachev, Aleksey V.; Baker, Erin Shammel; Anderson, Gordon A.; Smith, Richard D.

    2015-08-19

    The process of redirecting ions through 90o turns and ‘tee’ switches utilizing Structures for Lossless Ion Manipulations (SLIM) was evaluated using theoretical and simulation methods at 4 Torr pressure. SIMION simulations were used to optimize and evaluate conditions for performing turns without loss of signal intensity or ion mobility resolving power. Fundamental considerations indicated that the “race track” effect during ion turns may incur only small losses to the ion mobility resolving power at 4 Torr pressure for the typical plume widths predicted in an optimized SLIM ‘tee’ switch design. The dynamic switching of ions into orthogonal channels was also evaluated using SIMION ion trajectory simulations, and achieved similar performance. Simulation results were in close agreement with experimental results and were used to refine SLIM designs and applied potentials for their use.

  9. Turning point temperature and competition between relativistic and ponderomotive effects in self-focusing of laser beam in plasma

    SciTech Connect (OSTI)

    Bokaei, B.; Niknam, A. R.; Jafari Milani, M. R.

    2013-10-15

    The propagation characters of Gaussian laser beam in collisionless plasma are investigated by considering the ponderomotive and relativistic nonlinearities. The second-order differential equation of dimensionless beam width parameter is solved numerically, taking into account the effect of electron temperature. The results show that the ponderomotive force does not facilitate the relativistic self-focusing in all intensity ranges. In fact, there exists a certain intensity value that, if below this value, the ponderomotive nonlinearity can contribute to the relativistic self-focusing, or obstruct it, if above. It is also indicated that there is a temperature interval in which self-focusing can occur, while the beam diverges outside of this region. In addition, the results represent the existence of a “turning point temperature” in the mentioned interval that the self-focusing has the strongest power. The value of the turning point is dependent on laser intensity in which higher intensities result in higher turning point.

  10. EECBG Success Story: Lighting Retrofit Improving Visibility,...

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

    New LED lighting fixtures (right) emit a whiter light than existing high-pressure sodium ... New LED lighting fixtures (right) emit a whiter light than existing high-pressure sodium ...

  11. Smart Street Lights | GE Global Research

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

    LightGrid Provides Real-Time Feedback From Street Lights Click to email this to a friend ... LightGrid Provides Real-Time Feedback From Street Lights You use a GPS to provide ...

  12. What's Next for Solid-State Lighting?

    Energy Savers [EERE]

    Photo courtesy of GE Lighting What's Next for Solid-State Lighting? A s we stand on the brink of a lighting revolution spearheaded by light-emitting diode (LED) technology, one ...

  13. Fluorescent Lighting | Department of Energy

    Office of Environmental Management (EM)

    - by far the most common form of fluorescent lighting but rarely found in residential buildings -- are much more energy efficient than incandescent lamps and are ideally suited...

  14. Incandescent Lighting | Department of Energy

    Office of Environmental Management (EM)

    courtesy of iStockphotoTokenPhoto. Incandescent lamps are often considered the least energy efficient type of electric lighting commonly found in residential buildings....

  15. Common Industrial Lighting Upgrade Technologies

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

    The current causes mercury atoms to ionize generating ultraviolet photons otherwise known as ultraviolet light invisible to the human eye. These photons react with a phosphor ...

  16. Solid-State Lighting Webcasts

    SciTech Connect (OSTI)

    2011-12-16

    Links to past webcast presentations related to solid-state lighting, including presentation slides and question-and-answer sessions, where available.

  17. LED Lighting Facts®

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

    ... and NGL * Constantly changing based on feedback and input from stakeholders - Data ... the program value - 684 manufacturers, 360 retailersdistributors, 300 lighting ...

  18. Linac Coherent Light Source Overview

    ScienceCinema (OSTI)

    None

    2013-05-29

    Take an animated tour of the Linac Coherent Light Source (LCLS). Follow the laser pulse from the injector gun all the way through to the Far Experimental Hall.

  19. Presentation: Synchrotron Radiation Light Sources

    Broader source: Energy.gov [DOE]

    A briefing to the Secretary's Energy Advisory Board on Synchrotron Radiation Light Sources delivered by Patricia Dehmer, U.S. Department of Energy

  20. Shedding Light on Nanocrystal Defects

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

    Shedding Light on Nanocrystal Defects Print Nanocrystals have been the focus of much scientific interest lately, given their various advantageous mechanical properties. Their...

  1. Connected Lighting Systems Workshop Registration

    Broader source: Energy.gov [DOE]

    The registration fee for the 2016 DOE Connected Lighting Systems Workshop includes admission to all sessions, networking breakfasts and lunches, and an evening networking reception.

  2. Linac Coherent Light Source Overview

    Office of Energy Efficiency and Renewable Energy (EERE)

    Take an animated tour of the Linac Coherent Light Source (LCLS). Follow the laser pulse from the injector gun all the way through to the Far Experimental Hall.

  3. Energy Savings Activities-Lighting

    K-12 Energy Lesson Plans and Activities Web site (EERE)

    Students use the scientific method to examine school lighting technologies and determine if there are opportunities to save energy and money.

  4. Air Gaps, Size Effect, and Corner-Turning in Ambient LX-17

    SciTech Connect (OSTI)

    Souers, P C; Hernandez, A; Cabacungen, C; Fried, L; Garza, R; Glaesemann, K; Lauderbach, L; Liao, S; Vitello, P

    2007-05-30

    Various ambient measurements are presented for LX-17. The size (diameter) effect has been measured with copper and Lucite confinement, where the failure radii are 4.0 and 6.5 mm, respectively. The air well corner-turn has been measured with an LX-07 booster, and the dead-zone results are comparable to the previous TATB-boosted work. Four double cylinders have been fired, and dead zones appear in all cases. The steel-backed samples are faster than the Lucite-backed samples by 0.6 {micro}s. Bare LX-07 and LX-17 of 12.7 mm-radius were fired with air gaps. Long acceptor regions were used to truly determine if detonation occurred or not. The LX-07 crossed at 10 mm with a slight time delay. Steady state LX-17 crossed at 3.5 mm gap but failed to cross at 4.0 mm. LX-17 with a 12.7 mm run after the booster crossed a 1.5 mm gap but failed to cross 2.5 mm. Timing delays were measured where the detonation crossed the gaps. The Tarantula model is introduced as embedded in the Linked Cheetah V4.0 reactive flow code at 4 zones/mm. Tarantula has four pressure regions: off, initiation, failure and detonation. A report card of 25 tests run with the same settings on LX-17 is shown, possibly the most extensive simultaneous calibration yet tried with an explosive. The physical basis of some of the input parameters is considered.

  5. 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...

  6. Why Lighting Systems Need to Evolve

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

    Lighting Systems Need to Evolve DOE Connected Lighting Systems Meeting November 16, 2015 Lighting Controls - A Lost Opportunity 1 18% 16% 7% 2% 4% 4% Light scheduling Occupancy sensors Multi-level lighting or dimming Daylight harvesting Demand responsive lighting Building automation system (BAS) for lighting2 Percent of Buildings with Control Strategy Source: 2012 Commercial Buildings Energy Consumption Survey, US Energy Information Administration Lighting Controls - A Lost Opportunity 2 Source:

  7. LED Lighting: Just the Facts, Please!

    Broader source: Energy.gov [DOE]

    Now there's another arsenal in the toolbox to help consumers find LED lights they can trust: the Lighting Facts™ label.

  8. Have You Used LED Light Strings?

    Broader source: Energy.gov [DOE]

    This week, you read about LED holiday light strings, which can use 90% less energy than regular incandescent light strings.

  9. 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.

  10. A Winning Light Bulb With the Potential to Save the Nation Billions |

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

    Department of Energy A Winning Light Bulb With the Potential to Save the Nation Billions A Winning Light Bulb With the Potential to Save the Nation Billions August 4, 2011 - 3:09pm Addthis This 10-watt alternative LED bulb (which glows white when turned on) could save the nation about 35 terawatt-hours of electricity or $3.9 billion in one year and avoid 20 million metric tons of carbon emissions if every 60-watt incandescent bulb in the U.S. was replaced with the L Prize winner. | Photo

  11. Indoor air quality in 24 California residences designed as high-performance homes

    SciTech Connect (OSTI)

    Less, Brennan; Mullen, Nasim; Singer, Brett; Walker, Iain

    2015-01-01

    Today’s high performance green homes are reaching previously unheard of levels of airtightness and are using new materials, technologies and strategies, whose impacts on Indoor Air Quality (IAQ) cannot be fully anticipated from prior studies. This research study used pollutant measurements, home inspections, diagnostic testing and occupant surveys to assess IAQ in 24 new or deeply retrofitted homes designed to be high performance green buildings in California. Although the mechanically vented homes were six times as airtight as non-mechanically ventilated homes (medians of 1.1 and 6.1 ACH50, n=11 and n=8, respectively), their use of mechanical ventilation systems and possibly window operation meant their median air exchange rates were almost the same (0.30 versus 0.32 hr-1, n=8 and n=8, respectively). Pollutant levels were also similar in vented and unvented homes. In addition, these similarities were achieved despite numerous observed faults in complex mechanical ventilation systems. More rigorous commissioning is still recommended. Cooking exhaust systems were used inconsistently and several suffered from design flaws. Failure to follow best practices led to IAQ problems in some cases. Ambient nitrogen dioxide standards were exceeded or nearly so in four homes that either used gas ranges with standing pilots, or in Passive House-style homes that used gas cooking burners without venting range hoods. Homes without active particle filtration had particle count concentrations approximately double those in homes with enhanced filtration. The majority of homes reported using low-emitting materials; consistent with this, formaldehyde levels were approximately half those in conventional, new CA homes built before 2008. Emissions of ultrafine particles (with diameters <100 nm) were dramatically lower on induction electric cooktops, compared with either gas or resistance electric models. These results indicate that high performance homes can achieve

  12. Indoor air pollution from portable kerosene-fired space heaters. [Effects of wick height and fuel consumption rate

    SciTech Connect (OSTI)

    Traynor, G.W.; Apte, M.G.; Dillworth, J.F.; Grimsrud, D.T.

    1983-02-01

    Indoor use of unvented combustion appliances is known to cause an increase in indoor air pollutant levels. Laboratory tests were conducted on radiant and convective portable kerosene-fired space heaters to identify the pollutants they emit and to determine their emission rates. Laboratory-derived CO and NO/sub 2/ emission rates from unvented portable kerosense-fired space heaters are summarized and the effect of wick height and fuel consumption rate on CO and NO/sub 2/ emissions is given. Pollutant concentration profiles resulting from the use of kerosene heaters in a 27m/sup 3/ environmental chamber and a 240m/sup 3/ house are presented. When such heaters are operated for one hour in a 27m/sup 3/ chamber with 0.4 air changes per hour, the resultant CO/sub 2/ concentrations are well above the U.S. occupational standard, and NO/sub 2/ concentrations are well above California's short-term outdoor standard. Further data on parameters such as heater usage patterns and air exchange rates are needed to determine the actual pollutant exposure that kerosene heater users experience.

  13. The Linac Coherent Light Source

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

    White, William E.; Robert, Aymeric; Dunne, Mike

    2015-05-01

    The Linac Coherent Light Source (LCLS) at the SLAC National Accelerator Laboratory was the first hard X-ray free-electron laser (FEL) to operate as a user facility. After five years of operation, LCLS is now a mature FEL user facility. Our personal views about opportunities and challenges inherent to these unique light sources are discussed.

  14. Installing a Light Source 'Racetrack'

    Broader source: Energy.gov [DOE]

    This month, workers at Brookhaven National Laboratory’s National Synchrotron Light Source II (NSLS-II), the half-mile electron racetrack for one of the world’s most advanced light sources, will begin filling the facility’s steel and concrete shell.

  15. Improving Ventilation and Saving Energy: Final Report on Indoor Environmental Quality and Energy Monitoring in Sixteen Relocatable Classrooms

    SciTech Connect (OSTI)

    Apte, Michael G.; Norman, Bourassa; Faulkner, David; Hodgson, Alfred T.; Hotchi, Toshfumi; Spears, Michael; Sullivan, Douglas P.; Wang, Duo

    2008-04-04

    An improved HVAC system for portable classrooms was specified to address key problems in existing units. These included low energy efficiency, poor control of and provision for adequate ventilation, and excessive acoustic noise. Working with industry, a prototype improved heat pump air conditioner was developed to meet the specification. A one-year measurement-intensive field-test of ten of these IHPAC systems was conducted in occupied classrooms in two distinct California climates. These measurements are compared to those made in parallel in side by side portable classrooms equipped with standard 10 SEER heat pump air conditioner equipment. The IHPAC units were found to work as designed, providing predicted annual energy efficiency improvements of about 36 percent to 42 percent across California's climate zones, relative to 10 SEER units. Classroom ventilation was vastly improved as evidenced by far lower indoor minus outdoor CO2 concentrations. TheIHPAC units were found to provide ventilation that meets both California State energy and occupational codes and the ASHRAE minimum ventilation requirements; the classrooms equipped with the 10 SEER equipment universally did not meet these targets. The IHPAC system provided a major improvement in indoor acoustic conditions. HVAC system generated background noise was reduced in fan-only and fan and compressor modes, reducing the nose levels to better than the design objective of 45 dB(A), and acceptable for additional design points by the Collaborative on High Performance Schools. The IHPAC provided superior ventilation, with indoor minus outdoor CO2 concentrations that showed that the Title 24 minimum ventilation requirement of 15 CFM per occupant was nearly always being met. The opposite was found in the classrooms utilizing the 10 SEER system, where the indoor minus outdoor CO2 concentrations frequently exceeded levels that reflect inadequate ventilation. Improved ventilation conditions in the IHPAC lead to effective

  16. Light beam frequency comb generator

    DOE Patents [OSTI]

    Priatko, G.J.; Kaskey, J.A.

    1992-11-24

    A light beam frequency comb generator uses an acousto-optic modulator to generate a plurality of light beams with frequencies which are uniformly separated and possess common noise and drift characteristics. A well collimated monochromatic input light beam is passed through this modulator to produce a set of both frequency shifted and unshifted optical beams. An optical system directs one or more frequency shifted beams along a path which is parallel to the path of the input light beam such that the frequency shifted beams are made incident on the modulator proximate to but separated from the point of incidence of the input light beam. After the beam is thus returned to and passed through the modulator repeatedly, a plurality of mutually parallel beams are generated which are frequency-shifted different numbers of times and possess common noise and drift characteristics. 2 figs.

  17. Light beam frequency comb generator

    DOE Patents [OSTI]

    Priatko, Gordon J.; Kaskey, Jeffrey A.

    1992-01-01

    A light beam frequency comb generator uses an acousto-optic modulator to generate a plurality of light beams with frequencies which are uniformly separated and possess common noise and drift characteristics. A well collimated monochromatic input light beam is passed through this modulator to produce a set of both frequency shifted and unshifted optical beams. An optical system directs one or more frequency shifted beams along a path which is parallel to the path of the input light beam such that the frequency shifted beams are made incident on the modulator proximate to but separated from the point of incidence of the input light beam. After the beam is thus returned to and passed through the modulator repeatedly, a plurality of mutually parallel beams are generated which are frequency-shifted different numbers of times and possess common noise and drift characteristics.

  18. Supersymmetry across the light and heavy-light hadronic spectrum

    SciTech Connect (OSTI)

    Dosch, Hans Gunter; de Teramond, Guy F.; Brodsky, Stanley J.

    2015-10-07

    Relativistic light-front bound-state equations for mesons and baryons can be constructed in the chiral limit from the supercharges of a superconformal algebra which connect baryon and meson spectra. Quark masses break the conformal invariance, but the basic underlying supersymmetric mechanism, which transforms meson and baryon wave functions into each other, still holds and gives remarkable connections across the entire spectrum of light and heavy-light hadrons. As a result, we also briefly examine the consequences of extending the supersymmetric relations to double-heavy mesons and baryons.

  19. TableHC11.13.xls

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

    15.1 5.5 Indoor Lights Turned On During Summer Number of Lights Turned On Between 1 and 4 Hours per Day........................... 91.8 16.8 12.2 4.6 1.......................................................................... 28.6 5.0 3.5 1.5 2.......................................................................... 29.5 6.2 4.8 1.4 3.......................................................................... 14.7 2.5 1.7 0.8

  20. TableHC12.13.xls

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

    5.6 17.7 7.9 Indoor Lights Turned On During Summer Number of Lights Turned On Between 1 and 4 Hours per Day........................... 91.8 21.7 14.5 7.2 1.......................................................................... 28.6 6.3 4.4 1.9 2.......................................................................... 29.5 6.5 4.2 2.3 3.......................................................................... 14.7 4.0 2.8 1.2

  1. TableHC14.13.xls

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

    4.2 7.6 16.6 Indoor Lights Turned On During Summer Number of Lights Turned On Between 1 and 4 Hours per Day........................... 91.8 19.5 6.1 13.4 1.......................................................................... 28.6 6.1 1.7 4.4 2.......................................................................... 29.5 6.3 1.8 4.5 3.......................................................................... 14.7 3.1 1.1 2.0

  2. Light water detritiation

    SciTech Connect (OSTI)

    Fedorchenko, O.A.; Aleksee, I.A.; Bondarenko, S.D.; Vasyanina, T.V.

    2015-03-15

    Hundreds of thousands of tons of tritiated light water have been accumulating from the enterprises of nuclear fuel cycles around the world. The Dual-Temperature Water-Hydrogen (DTWH) process looks like the only practical alternative to Combined Electrolysis and Catalytic Exchange (CECE). In DTWH power-consuming lower reflux device (electrolytic cell) is replaced by a so-called 'hot tower' (LPCE column operating at conditions which ensure relatively small value of elementary separation factor α(hot)). In the upper, cold tower, the tritium transfers from hydrogen to water while in the lower, hot tower - in the opposite direction - from water to hydrogen. The DTWH process is much more complicated compared to CECE; it must be thoroughly computed and strictly controlled by an automatic control system. The use of a simulation code for DTWH is absolutely important. The simulation code EVIO-5 deals with 3 flows inside a column (hydrogen gas, water vapour and liquid water) and 2 simultaneous isotope exchange sub-processes (counter-current phase exchange and co-current catalytic exchange). EVIO-5 takes into account the strong dependence of process performance on given conditions (temperature and pressure). It calculates steady-state isotope concentration profiles considering a full set of reversible exchange reactions between different isotope modifications of water and hydrogen (12 molecular species). So the code can be used for simulation of LPCE column operation for detritiation of hydrogen and water feed, which contains H and D not only at low concentrations but above 10 at.% also. EVIO-5 code is used to model a Tritium Removal Facility with a throughput capacity of about 400 m{sup 3}/day. Simulation results show that a huge amount of wet-proofed catalyst is required (about 6000 m{sup 3}), mainly (90%) in the first stage. One reason for these large expenses (apart from a big scale of the problem itself) is the relatively high tritium separation factor in the hot tower

  3. Connected Lighting and beyond, Self-Configuration

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

    Connected Lighting and beyond, Self-Configuration Dagnachew Birru, PhD Head of Lighting Research Department Philips Research North America, Cambridge, MA Nov 16, 2015 DoE Connected Lighting Meeting 2 Outline * Connected Lighting and self-configuration * Examples of current state - Cities - Buildings * Next wave * Summary 3 Lighting has gone digital, redefining what is possible with light Energy efficiency Creating amazing experiences Enhancing attractiveness of cities 4 The Future of Lighting:

  4. Types of Lighting in Commercial Buildings - Lighting Characteristics

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

    "coolness" of the color appearance of the lamp's light. The CCT is given in the Kelvin (K) temperature scale, and the higher the color temperature, the cooler the appearance of...

  5. Effective White Light Options for Parking Area Lighting

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

    ... The areas directly under the light poles are not overlit compared to the rest of the ... www.eere.energy.govinformationcenter PNNL-SA-74415 * August 2010 Produced for the U.S. ...

  6. Induction Lighting: An Old Lighting Technology Made New Again...

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

    The technology, however, is far from new. Nikola Tesla demonstrated induction lighting in the late 1890s around the same time that his rival, Thomas Edison, was working to improve ...

  7. Light-duty vehicle summary

    SciTech Connect (OSTI)

    Williams, L.S. ); Hu, P.S. )

    1990-07-01

    This document brings you up to date on the most recent fuel economy and market share data for the new light-duty vehicle fleet. Model year 1990 fuel economies are weighted based on the sales of the first six months of model year 1990 (from September 1989 to March 1990). Sales-weighted fuel economy of all new automobiles decreased in the first six months of model year 1990, from 28.0 mpg in model year 1989 to 27.7 mpg. The compact, midsize, and large size classes, which together claimed 75% of the new automobile market, each showed fuel economy declines of 0.4 mpg or more. Unlike automobiles, new 1990 light trucks showed an overall 0.4 mpg gain from model year 1989. This increase was primarily due to the increased fuel economy of the small van size class. In the first half of model year 1990, small van replaced small pickup as the second most popular light truck size class. Although the fuel economy of light trucks improved, the larger market share of automobiles in the light-duty vehicle market (automobiles and light trucks combined) and the decreased fuel economy in automobiles resulted in an overall reduction of 0.2 mpg for the entire light-duty vehicle fleet in the first half of model year 1990. Also, in the first half of model year 1990, light trucks claimed more than 33% of the light-duty vehicle market--a considerable increase from the 19.8% share in 1976. 9 figs., 18 tabs.

  8. (Lighting and) Solid-State Lighting: Science, Technology, Economic

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

    Perspectives Lighting and) Solid-State Lighting: Science, Technology, Economic Perspectives - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization

  9. Inorganic volumetric light source excited by ultraviolet light

    DOE Patents [OSTI]

    Reed, Scott; Walko, Robert J.; Ashley, Carol S.; Brinker, C. Jeffrey

    1994-01-01

    The invention relates to a composition for the volumetric generation of radiation. The composition comprises a porous substrate loaded with a component capable of emitting radiation upon interaction with an exciting radiation. Preferably, the composition is an aerogel substrate loaded with a component, e.g., a phosphor, capable of interacting with exciting radiation of a first energy, e.g., ultraviolet light, to produce radiation of a second energy, e.g., visible light.

  10. Inorganic volumetric light source excited by ultraviolet light

    DOE Patents [OSTI]

    Reed, S.; Walko, R.J.; Ashley, C.S.; Brinker, C.J.

    1994-04-26

    The invention relates to a composition for the volumetric generation of radiation. The composition comprises a porous substrate loaded with a component capable of emitting radiation upon interaction with an exciting radiation. Preferably, the composition is an aerogel substrate loaded with a component, e.g., a phosphor, capable of interacting with exciting radiation of a first energy, e.g., ultraviolet light, to produce radiation of a second energy, e.g., visible light. 4 figures.

  11. Another Side of Light - A

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

    The fact that light is a kind of wave is common knowledge today, and a hundred years ago the theory that light is some kind of wave was already well confirmed by experiment. But at that time Einstein found, in a newly-discovered physical law, a clue that there was more to light than the wave theory of those days seemed to suggest. A B C D A. An inconsistency Drop a rock in a lake, and you'll stir up waves. Drop two rocks in different places, and you'll stir up two sets of waves. If you look

  12. Light metal explosives and propellants

    DOE Patents [OSTI]

    Wood, Lowell L.; Ishikawa, Muriel Y.; Nuckolls, John H.; Pagoria, Phillip F.; Viecelli, James A.

    2005-04-05

    Disclosed herein are light metal explosives, pyrotechnics and propellants (LME&Ps) comprising a light metal component such as Li, B, Be or their hydrides or intermetallic compounds and alloys containing them and an oxidizer component containing a classic explosive, such as CL-20, or a non-explosive oxidizer, such as lithium perchlorate, or combinations thereof. LME&P formulations may have light metal particles and oxidizer particles ranging in size from 0.01 .mu.m to 1000 .mu.m.

  13. OLED lighting devices having multi element light extraction and luminescence conversion layer

    DOE Patents [OSTI]

    Krummacher, Benjamin Claus; Antoniadis, Homer

    2010-11-16

    An apparatus such as a light source has a multi element light extraction and luminescence conversion layer disposed over a transparent layer of the light source and on the exterior of said light source. The multi-element light extraction and luminescence conversion layer includes a plurality of light extraction elements and a plurality of luminescence conversion elements. The light extraction elements diffuses the light from the light source while luminescence conversion elements absorbs a first spectrum of light from said light source and emits a second spectrum of light.

  14. Device structure for OLED light device having multi element light extraction and luminescence conversion layer

    DOE Patents [OSTI]

    Antoniadis; Homer , Krummacher; Benjamin Claus

    2008-01-22

    An apparatus such as a light source has a multi-element light extraction and luminescence conversion layer disposed over a transparent layer of the light source and on the exterior of said light source. The multi-element light extraction and luminescence conversion layer includes a plurality of light extraction elements and a plurality of luminescence conversion elements. The light extraction elements diffuses the light from the light source while luminescence conversion elements absorbs a first spectrum of light from said light source and emits a second spectrum of light.

  15. Light ESCO | Open Energy Information

    Open Energy Info (EERE)

    ESCO Jump to: navigation, search Name: Light ESCO Place: Rio de Janeiro, Brazil Zip: Caixa Postal 0571 Product: Rio de Janeiro-based energy service company that specialises in...

  16. The Momentum of Light - A

    Office of Scientific and Technical Information (OSTI)

    The theory of relativity suggested that the energy quanta of light should also be quanta ... A. Momentum Any material object is a lump of energy. That is a major implication of ...

  17. Columbia Water & Light- Solar Rebates

    Broader source: Energy.gov [DOE]

    Columbia Water & Light electric customers are eligible for a $400 rebate for the purchase of a new solar water heater. To apply for this rebate, a customer submits a pre-approval application to...

  18. Incandescent Lighting | Department of Energy

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

    These lamps produce visible light by heating a tiny coil or filament of tungsten wire that glows when it is heated by an electrical current. "Long-life" lamps are an example of ...

  19. Next Generation Light Source Workshops

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

    Next Generation Light Source Workshops A series of workshops will be held in late August with the goal of refining the scientific drivers for the facility and translating the...

  20. Tips: Lighting | Department of Energy

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

    bulbs and can last up to three times longer than traditional incandescent light bulbs. ... ENERGY STAR-qualified CFLs use about 75% less energy and last up to 10 times longer than ...

  1. Lighting Controls | Department of Energy

    Energy Savers [EERE]

    LED bulbs and fixtures must be designed for dimming, and you may need to replace existing dimmer switches with ones that are compatible with an LED lighting product. The packaging ...

  2. Projection screen having reduced ambient light scattering

    SciTech Connect (OSTI)

    Sweatt, William C.

    2010-05-11

    An apparatus and method for improving the contrast between incident projected light and ambient light reflected from a projection screen are described. The efficiency of the projection screen for reflection of the projected light remains high, while permitting the projection screen to be utilized in a brightly lighted room. Light power requirements from the projection system utilized may be reduced.

  3. Series cell light extinction monitor

    DOE Patents [OSTI]

    Novick, Vincent J.

    1990-01-01

    A method and apparatus for using the light extinction measurements from two or more light cells positioned along a gasflow chamber in which the gas volumetric rate is known to determine particle number concentration and mass concentration of an aerosol independent of extinction coefficient and to determine estimates for particle size and mass concentrations. The invention is independent of particle size. This invention has application to measurements made during a severe nuclear reactor fuel damage test.

  4. 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

  5. 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%

  6. Shedding Light on Nanocrystal Defects

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

    Shedding Light on Nanocrystal Defects Shedding Light on Nanocrystal Defects Print Thursday, 20 June 2013 10:41 Nanocrystals have been the focus of much scientific interest lately, given their various advantageous mechanical properties. Their resistance to stress has had researchers proposing nanocrystals as a promising new protective coating for advanced gas turbine and jet engines. But recent studies conducted at the ALS show that the tiny size of nanocrystals does not safeguard them from

  7. Characteristics of the three-half-turn-antenna-driven RF discharge in the Uragan-3M torsatron

    SciTech Connect (OSTI)

    Grigor’eva, L. I.; Chechkin, V. V. Moiseenko, V. E.; Grekov, D. L.; Pavlichenko, R. O.; Lozin, A. V.; Tarasov, I. K.; Kulaga, A. Ye.; Zamanov, N. V.; Tretiak, K. K.; Kozulya, M. M.; Beletskii, A. A.; Kasilov, A. A.; Mironov, Yu. K.; Romanov, V. S.; Voitsenya, V. S.

    2015-12-15

    In the ℓ = 3 Uragan-3M torsatron hydrogen plasma is produced by RF fields in the Alfvén range of frequencies (ω ≤ ω{sub ci}). The initial (target) plasma with the line-averaged density of units 10{sup 12} cm{sup −3} is produced by a frame antenna with a broad spectrum of generated parallel wavenumbers. After this, to heat the plasma and bring its density to ∼10{sup 13} cm{sup –3}, another, shorter wavelength three-half-turn antenna with large transverse currents is used. The behavior of the density, electron temperature, and loss of the plasma supported by the three-half-turn antenna is studied depending on the RF power fed to the antenna and initial values of the density and electron temperature supplied by the frame antenna.

  8. Turning off the heat. Why America must double energy efficiency to save money and reduce global warming

    SciTech Connect (OSTI)

    Casten, T.R.

    1998-12-31

    Turning Off the Heat targets a main source of overuse of fossil fuels--the energy producers themselves who, through their government-approved monopolies have led to energy inefficiency and needless pollution. A leading authority with 20 years of experience in the development and operation of energy conversions in the development and operation of energy conversions, Thomas R. Casten clearly explains that the US and other nations of the world can, and must, double the efficiency of energy utilities. This efficiency improvement will lead to a reduction of electric prices by 30 to 40% and cut carbon dioxide emissions (a greenhouse gas) in half. Two-thirds of the fuel used to make US Electricity is wasted, resulting in higher energy prices and excess pollution. If market forces are unleased and monopolies ended, competition will save money and fuel, Casten says. Turning Off the Heat is an essential volume for policy-makers, legislators, leaders in industry, environmentalists, and concerned citizens.

  9. Computed tomography and optical remote sensing: Development for the study of indoor air pollutant transport and dispersion

    SciTech Connect (OSTI)

    Drescher, A.C.

    1995-06-01

    This thesis investigates the mixing and dispersion of indoor air pollutants under a variety of conditions using standard experimental methods. It also extensively tests and improves a novel technique for measuring contaminant concentrations that has the potential for more rapid, non-intrusive measurements with higher spatial resolution than previously possible. Experiments conducted in a sealed room support the hypothesis that the mixing time of an instantaneously released tracer gas is inversely proportional to the cube root of the mechanical power transferred to the room air. One table-top and several room-scale experiments are performed to test the concept of employing optical remote sensing (ORS) and computed tomography (CT) to measure steady-state gas concentrations in a horizontal plane. Various remote sensing instruments, scanning geometries and reconstruction algorithms are employed. Reconstructed concentration distributions based on existing iterative CT techniques contain a high degree of unrealistic spatial variability and do not agree well with simultaneously gathered point-sample data.

  10. Lighting system replacement brings energy costs down, light levels up

    SciTech Connect (OSTI)

    Radmer, D.J.

    1984-11-08

    The R.J. Frisby Mfg. Co. operates on three shifts and produces precision screw machine products for a variety of industries, including automotive, marine, machine tool, hydraulics and pneumatics, business machines, electrical and electronics, photography, and precision instruments. The required degree of manufacturing precision demands high light levels in manufacturing areas. When the 100,000 sq ft plant was built in 1973, mercury vapor lighting was installed consistent with the current state of the art for lighting such facilities. In the ensuing years, it became apparent that the soaring electric bills that came in the wake of the Arab oil embargo of 1973-74 would have to be controlled. Estimates by the U.S. Department of Energy indicated that electric energy costs were likely to rise by 160 percent over the next 10 yr. Based on this estimate, and the fact that lighting accounted for $70,000, or half of the annual electric bill, it was estimated that $900,000 to $1,000,000 would be spent for lighting energy over the next decade. The concern over the probability of rapidly escalating electrical costs was soon justified when, in three steps over one 12 mo period, the electric energy rate increased from $0.0305/kwh to $0.0416/kwh -more than a 36 percent increase. During that same period, the demand charge was raised in two steps from $3.75/kw to $4.85/kw --more than a 29 percent increase.

  11. Study of the atmospheric chemistry of radon progeny in laboratory and real indoor atmospheres. Final project report

    SciTech Connect (OSTI)

    Hopke, P.K.

    1996-09-01

    This report completes Clarkson University`s study of the chemical and physical behavior of the {sup 218}Po atom immediately following its formation by the alpha decay of radon. Because small changes in size for activity in the sub-10 nm size range result in large changes in the delivered dose per unit exposure, this behavior must be understood if the exposure to radon progeny and it dose to the cells in the respiratory tract are to be fully assessed. In order to pursue this general goal, two areas of radon progeny behavior are being pursued; laboratory studies under controlled conditions to better understand the fundamental physical and chemical processes that affect the progeny`s atmospheric behavior and studies in actual indoor environments to develop a better assessment of the exposure of the occupants of that space to the size and concentration of the indoor radioactive aerosol. Thus, two sets of specific goals have been established for this project. The specific tasks of the controlled laboratory studies are (1) Determine the formation rates of {circ}OH radicals formed by the radiolysis of air following radon decay; (2) Examine the formation of particles by the radiolytic oxidation of substances like SO{sub 2}, ethylene, and H{sub 2}S to lower vapor pressure compounds and determine the role of gas phase additives such as H{sub 2}O and NH{sub 3} in determining the particle size; (3) Measure the rate of ion-induced nucleation using a thermal diffusion cloud chamber, and (4) Measure the neutralization rate of {sup 218}PoO{sub x}{sup +} in O{sub 2} at low radon concentrations.

  12. 275px-Lap_1%2C_Turn_1_Canada_2008_0.jpg | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information 275px-Lap_1%2C_Turn_1_Canada_2008_0

  13. Tunnel junction enhanced nanowire ultraviolet light emitting diodes

    SciTech Connect (OSTI)

    Sarwar, A. T. M. Golam; May, Brelon J.; Deitz, Julia I.; Grassman, Tyler J.; McComb, David W.; Myers, Roberto C.

    2015-09-07

    Polarization engineered interband tunnel junctions (TJs) are integrated in nanowire ultraviolet (UV) light emitting diodes (LEDs). A ∼6 V reduction in turn-on voltage is achieved by the integration of tunnel junction at the base of polarization doped nanowire UV LEDs. Moreover, efficient hole injection into the nanowire LEDs leads to suppressed efficiency droop in TJ integrated nanowire LEDs. The combination of both reduced bias voltage and increased hole injection increases the wall plug efficiency in these devices. More than 100 μW of UV emission at ∼310 nm is measured with external quantum efficiency in the range of 4–6 m%. The realization of tunnel junction within the nanowire LEDs opens a pathway towards the monolithic integration of cascaded multi-junction nanowire LEDs on silicon.

  14. Save Money with LED Holiday Light Strings

    Broader source: Energy.gov [DOE]

    LED (or light emitting diode) light strings can use 90% less energy than regular incandescent light strings. They also last about ten times longer, are cooler than incandescents (reducing fire hazards), and are more durable.

  15. Solid-State Lighting | Department of Energy

    Energy Savers [EERE]

    Lighting Solid-State Lighting 2013 DOE Solid-State Lighting Program Overview ssl-overviewbrochurefeb2013.pdf (3.05 MB) More Documents & Publications July 2016 Postings January ...

  16. Solid-State Lighting | Department of Energy

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

    of Princeton's approach to solid-state lighting. Read more A Comprehensive Program Solid-state lighting (SSL) technology has the potential to reduce U.S. lighting energy usage by...

  17. D light design | Open Energy Information

    Open Energy Info (EERE)

    light design Jump to: navigation, search Name: d.light design Place: New Delhi, Delhi (NCT), India Zip: 1110049 Product: d.light is a US-founded, India-based designer and...

  18. 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...

  19. Controlling Light | Photosynthetic Antenna Research Center

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

    Controlling Light June 29, 2016 Controlling Light New protection for photosynthetic organisms VIEW ARTICLE HERE https://source.wustl.edu/2016/06/controlling-light-new-protection-photosynthetic...

  20. Outdoor Solar Lighting | Department of Energy

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

    Some solar lighting systems are self-contained units: You only need to place the lights in a sunny location. Others have the lights separate from a solar cell panel, in which case ...

  1. Flexible liquid core light guide with focusing and light shaping attachments

    DOE Patents [OSTI]

    Kross, Brian J.; Majewski, Stanislaw; Zorn, Carl J.; Majewski, Lukasz A.

    1997-01-01

    A liquid light guide system for ultraviolet light is disclosed that has a light shaping arrangement for the emitted light, a stable liquid core and sheath and reliable and effective end closures.

  2. Flexible liquid core light guide with focusing and light shaping attachments

    DOE Patents [OSTI]

    Kross, B.J.; Majewski, S.; Zorn, C.J.; Majewski, L.A.

    1997-11-04

    A liquid light guide system for ultraviolet light is disclosed that has a light shaping arrangement for the emitted light, a stable liquid core and sheath and reliable and effective end closures. 12 figs.

  3. Adaptive Street Lighting Controls | Department of Energy

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

    Information Resources » Webcasts » Adaptive Street Lighting Controls Adaptive Street Lighting Controls This two-part DOE Municipal Solid-State Street Lighting Consortium webinar focused on LED street lighting equipped with adaptive control components. In Part I, presenters Amy Olay of the City of San Jose, CA, and Kelly Cunningham of the California Lighting Technology Center at UC Davis discussed their experiences as early adopters of these smart street lighting systems. In Part II, presenters

  4. Testimonials - Partnerships in LED Lighting - Philips Lumileds

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

    Lighting, LLC | Department of Energy LED Lighting - Philips Lumileds Lighting, LLC Testimonials - Partnerships in LED Lighting - Philips Lumileds Lighting, LLC Addthis Text Version The words "Office of Energy Efficiency & Renewable Energy, U.S. Department of Energy, EERE Partnership Testimonials," appear on the screen, followed by "Sunil Thomas, General Manager of San Jose Manufacturing Site, Philips Lumileds Lighting, LLC" and footage of a man sitting in a showcase

  5. Outdoor Area Lighting | Department of Energy

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

    Outdoor Area Lighting Outdoor Area Lighting This document reviews the major design and specification concerns for outdoor area lighting, and discusses the potential for LED luminaires to save energy plant-wide while providing high quality lighting for outdoor areas. Outdoor Area Lighting (June 2008) (3.16 MB) More Documents & Publications Philadelphia International Airport Apron Lighting: LED System Performance in a Trial Installation Model Specification for LED Roadway Luminaires, V2.0

  6. Picture of the Week: Circuits of light

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

    5 Circuits of light This artistic conceptualization of circuits made of light represents a new capability that could lead to advanced sensor systems, quantum information processing technology, and more. March 25, 2016 circuits of light artist's conception Circuits of light: artist's conception View a super-large 300 dpi version of this image on our Lab Flickr site. Circuits of light This artistic conceptualization of circuits made of light represents a new capability that could lead to advanced

  7. Connected Lighting Systems | Department of Energy

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

    Connected Lighting Systems Connected Lighting Systems The replacement of today's lighting infrastructure with LED products offers the potential for future connected lighting systems that could become a data-collection platform that enables greater energy savings in buildings and cities. Such connected lighting systems can not only dras-tically improve the energy performance of lighting and other building systems, but also enable a wide array of services, benefits, and revenue streams that would

  8. Outdoor Solar Lighting | Department of Energy

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

    ... solar heating and cooling Active solar heating Follow Us followontwitter.png followonfacebook.png Lighting Blogs Buying the Perfect Energy-Efficient Light Bulb in 5 Easy ...

  9. Outdoor Area Lighting | Department of Energy

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

    for outdoor areas. Outdoor Area Lighting (June 2008) More Documents & Publications Philadelphia International Airport Apron Lighting: LED System Performance in a Trial...

  10. Types of Lighting in Commercial Buildings - Introduction

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

    Introduction Lighting is a major consumer of electricity in commercial buildings and a target for energy savings through use of energy-efficient light sources along with other...

  11. Solid-State Lighting Program Strategy

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

    James R. Brodrick, Ph.D. April 22, 2014 U.S. Department of Energy Solid-State Lighting Program Strategy MARKET * Many companies * Semiconductors :: Lighting * Large business ...

  12. Carbon Power & Light, Inc | Open Energy Information

    Open Energy Info (EERE)

    Power & Light, Inc Jump to: navigation, search Name: Carbon Power & Light, Inc Place: Wyoming Phone Number: 307-326-5206 Website: www.carbonpower.com Facebook: https:...

  13. Renaissance Lighting Inc | Open Energy Information

    Open Energy Info (EERE)

    Renaissance Lighting Inc. Place: Herndon, Virginia Product: Utilizing patented LED optics, Renaissance Lighting delivers uniformity in wall wash and floodlight applications by...

  14. Poudre Valley REA- Commercial Lighting Rebate Program

    Broader source: Energy.gov [DOE]

    Poudre Valley Rural Electric Association (PVREA), a Touchstone Energy Cooperative, offers a variety of lighting rebates to commercial customers. Rebates are available on commercial lighting...

  15. Cedarburg Light & Water Comm | Open Energy Information

    Open Energy Info (EERE)

    Cedarburg Light & Water Comm Jump to: navigation, search Name: Cedarburg Light & Water Comm Place: Wisconsin Phone Number: (262) 375-7650 Website: www.cedarburglightandwater.com...

  16. Paragould Light & Water Comm | Open Energy Information

    Open Energy Info (EERE)

    Paragould Light & Water Comm Jump to: navigation, search Name: Paragould Light & Water Comm Place: Arkansas Phone Number: (870) 239-7700 Website: www.paragould.com Facebook:...

  17. Clarksville Light & Water Co | Open Energy Information

    Open Energy Info (EERE)

    Clarksville Light & Water Co Jump to: navigation, search Name: Clarksville Light & Water Co Place: Arkansas Phone Number: 479-754-3148 Website: www.clarksvillelightwater.com...

  18. Two Rivers Water & Light | Open Energy Information

    Open Energy Info (EERE)

    Water & Light Jump to: navigation, search Name: Two Rivers Water & Light Place: Wisconsin Phone Number: (920) 793-5550 Website: trwaterandlight.com Facebook: https:...

  19. Parkland Light & Water Company | Open Energy Information

    Open Energy Info (EERE)

    Parkland Light & Water Company Jump to: navigation, search Name: Parkland Light & Water Company Place: Washington Phone Number: (253) 531-5666 Website: www.plw.coop Outage...

  20. Lockwood Water & Light Company | Open Energy Information

    Open Energy Info (EERE)

    Lockwood Water & Light Company Jump to: navigation, search Name: Lockwood Water & Light Company Place: Missouri Phone Number: 417-232-4221 Outage Hotline: 417-232-4221 References:...