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Note: This page contains sample records for the topic "lamps current performance" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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1

Solid-State Lighting: LED Replacement Lamps: Current Performance and the  

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

LED Replacement Lamps: Current LED Replacement Lamps: Current Performance and the Latest on ENERGY STAR® to someone by E-mail Share Solid-State Lighting: LED Replacement Lamps: Current Performance and the Latest on ENERGY STAR® on Facebook Tweet about Solid-State Lighting: LED Replacement Lamps: Current Performance and the Latest on ENERGY STAR® on Twitter Bookmark Solid-State Lighting: LED Replacement Lamps: Current Performance and the Latest on ENERGY STAR® on Google Bookmark Solid-State Lighting: LED Replacement Lamps: Current Performance and the Latest on ENERGY STAR® on Delicious Rank Solid-State Lighting: LED Replacement Lamps: Current Performance and the Latest on ENERGY STAR® on Digg Find More places to share Solid-State Lighting: LED Replacement Lamps: Current Performance and the Latest on ENERGY STAR® on

2

Text-Alternative Version: LED Replacement Lamps: Current Performance and the Latest on ENERGY STAR  

Broader source: Energy.gov [DOE]

Below is the text-alternative version of the LED Replacement Lamps: Current Performance and the Latest on ENERGY STAR webcast.

3

LED Replacement Lamps: Current Performance and the Latest on ENERGY STAR  

Broader source: Energy.gov [DOE]

This May 19, 2009 webcast summarized CALiPER's recent benchmark testing of common omnidirectional incandescent lamps (e.g., A-lamps), and provided an update on ENERGY STAR criteria for LED integral...

4

Maintaining optimum fluorescent lamp performance under elevated temperature conditions  

SciTech Connect (OSTI)

This paper describes a new technique for optimizing fluorescent lamp performance under elevated temperature conditions. This approach uses a thermo-electric Peltier device to produce a localized cold spot temperature of approximately 40/sup 0/C, allowing the lamps to maintain maximum light output and efficacy independent of prevailing ambient temperatures inside a luminaire. Experimental data show that a 20% increase in light output and a 10% increase in efficacy over typical lamp performance in a warm fixture environment can be obtained using this device. Only 0.25 watts must be supplied to the Peltier device to produce these results.

Siminovitch, M.J.; Rubinstein, F.M.; Clark, T.A.; Verderber, R.R.

1986-04-01T23:59:59.000Z

5

All mercury lamps contain small amounts of mercury. An electric current passes through the lamp and vaporizes the mercury to generate light. Recycling mercury containing lamps protects human health and our environment from heavy  

E-Print Network [OSTI]

All mercury lamps contain small amounts of mercury. An electric current passes through the lamp and vaporizes the mercury to generate light. Recycling mercury containing lamps protects human health and our the environment by recycling universal wastes, contact EH&S at (949) 824-6200 or visit: www.ehs.uci.edu Mercury

George, Steven C.

6

The effects of supply harmonics on the performance of compact fluorescent lamps  

SciTech Connect (OSTI)

This paper describes a performance evaluation of ten compact fluorescent lighting systems operated with sinusoidal and distorted voltage waveform conditions. The lamps were either provided with an electronic ballast, a magnetic core ballast or a magnetic core ballast with a power factor correction circuit. The test results show that the electrical performance of the compact fluorescent lamps for both sinusoidal and distorted voltage waveform operation is related to the different types of ballast used. The cost of operation of these compact fluorescent lamps was calculated and compared to the cost of a conventional 60 W incandescent lamp.

Arseneau, R.; Ouellette, M.

1993-04-01T23:59:59.000Z

7

Power factor and harmonic distortion characteristics of energy efficient lamps  

SciTech Connect (OSTI)

This paper evaluates the performance of a new class of lamps which are generally classified as the energy-saving lamps. It is shown that, when compared with the incandescent lamps, these lamps indeed consume less real power and have higher relative illumination. However, the energy-saving lamps operate at a low power factor and produce current distortion which are much higher than the distortion produced by the traditional incandescent lamps.

Etezadi-Amoli, M.; Florence, T.

1989-07-01T23:59:59.000Z

8

Predicted Pulsed-Power/Flash-Lamp Performance of the NIF Main Amplifier  

SciTech Connect (OSTI)

The laser glass for the National Ignition Facility (NIF) Main Amplifier system is pumped by a system of 192 pulsed power/flash lamp assemblies. Each of these 192 assemblies consists of a 1.6 MJ (nominal) capacitor bank working with a Pre-Ionization/Lamp Check (PILC) pulser to drive an array of 40 flash lamps. This paper describes the predicted performance of these Power Conditioning System (PCS) modules in concert with flashlamp assemblies in NIF. Each flashlamp assembly consists of 20 parallel sets of lamps in series pairs. The sensitivity of system performance to various design parameters of the PILC pulser and the main capacitor bank is described. Results of circuit models are compared to sub-scale flashlamp tests and to measurements taken in tests of a PCS module driving a flashlamp assembly in the First Article NIF Test Module facility at Sandia National Laboratories. Also included are predictions from a physics-based, semi-empirical amplifier gain code.

Fulkerson, E. Steven; Hammond, Jud; Harjes, Henry C.; Moore, William B.S.; Smith, David L.; Wilson, J. Michael

1999-06-22T23:59:59.000Z

9

Performance of a novel LED lamp arrangement to reduce SNR fluctuation for multi-user visible light communication systems  

Science Journals Connector (OSTI)

This paper investigates the performance of our recently proposed LED lamp arrangement to reduce the SNR fluctuation from different locations in the room for multi-user visible light...

Wang, Zixiong; Yu, Changyuan; Zhong, Wen-De; Chen, Jian; Chen, Wei

2012-01-01T23:59:59.000Z

10

Lighting Group: Sources and Ballasts: LED Reflector Lamp  

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

LED Reflector Lamp LED Reflector Lamp LED Reflector Lamp Objective LED reflector lamp The goal of this project is to develop a revolutionary new reflector lamp which offers many advantages over current incandescent reflector lamps, including: three times greater efficiency ten times the rated life greater optical and performance properties use of light emitting diodes (LEDs) to generate the light. Although LEDs have been commercially available since the late 1960’s, recent dramatic improvements in LED technology have led to white light devices with efficiencies that meet or exceed those of a standard incandescent lamp. This project will build upon these improvements to develop a new type of source for focusing light. Contact Information For more information on this project, please contact:

11

Performance of "Ultra-High" Efficient Electronic Ballast for HID Lamps  

E-Print Network [OSTI]

. Index Terms--Electronic ballast, HID lamps, resonant inverter, power loss modeling, Silicon Carbide (Si of >95% for the ballast. Diode bridge rectifier EMI filter Resonant Inverter Power Factor Correction 75423, USA Abstract--A new electronic ballast circuit for High Intensity Discharge (HID) lamps

Tolbert, Leon M.

12

DOE CALiPER Program, Report 21.2: Linear (T8) LED Lamp Performance in Five Types of Recessed Troffers  

SciTech Connect (OSTI)

Although lensed troffers are numerous, there are many other types of optical systems as well. This report looked at the performance of three linear (T8) LED lamps chosen primarily based on their luminous intensity distributions (narrow, medium, and wide beam angles) as well as a benchmark fluorescent lamp in five different troffer types. Also included are the results of a subjective evaluation. Results show that linear (T8) LED lamps can improve luminaire efficiency in K12-lensed and parabolic-louvered troffers, effect little change in volumetric and high-performance diffuse-lensed type luminaires, but reduce efficiency in recessed indirect troffers. These changes can be accompanied by visual appearance and visual comfort consequences, especially when LED lamps with clear lenses and narrow distributions are installed. Linear (T8) LED lamps with diffuse apertures exhibited wider beam angles, performed more similarly to fluorescent lamps, and received better ratings from observers. Guidance is provided on which luminaires are the best candidates for retrofitting with linear (T8) LED lamps.

Miller, Naomi J.; Perrin, Tess E.; Royer, Michael P.; Wilkerson, Andrea M.; Beeson, Tracy A.

2014-05-20T23:59:59.000Z

13

A theoretical study of the incandescent filament lamp performance under voltage flicker  

SciTech Connect (OSTI)

Incandescent filament lamp flicker, produced by voltage fluctuation, is a power quality problem that caused engineering concern since the onset of electrical illumination technology. The flicker phenomenon was analyzed and explained in early studies. Standards dealing with acceptable flicker levels are well known, nevertheless, today the discussion about flicker continues to be a top priority topic due to the fact that steady-state and transient voltage waveform distortion is a growing problem in low and medium voltage systems. In many situations voltage flicker is caused by subharmonics and interharmonics of voltage. Cycloconverters, welders and arc furnaces, eccentrically operating tools and integral cycle controlled power equipment are notorious for producing voltage flicker. The goal of this paper is to provide solid mathematical basis for the analytical modeling of incandescent filament lamp flicker when the voltage is nonsinusoidal. A mathematical model that enables the evaluation of the luminous flux modulation caused by noninteger harmonics (subharmonics and interharmonics) is presented. Three situations are detailed: square-wave voltage modulation, sinusoidal modulation and the case of noninteger harmonics with nearly contiguous frequencies.

Peretto, L. [Univ. of Bologna (Italy)] [Univ. of Bologna (Italy); Emanuel, A.E. [Worcester Polytechnic Inst., MA (United States)] [Worcester Polytechnic Inst., MA (United States)

1997-01-01T23:59:59.000Z

14

LED MR16 Lamps  

Broader source: Energy.gov [DOE]

The following CALiPER report provides detailed analysis of LED MR16 lamp performance, covering basic performance characteristics as well as subjective evaluation of beam, shadow, and color quality. Pending reports will offer analysis on performance attributes that are not captured by LM-79 testing. These reports are intended to educate the industry on market trends, potential issues, and important areas for improvement.

15

LED T8 Replacement Lamps | Department of Energy  

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

T8 Replacement Lamps LED T8 Replacement Lamps This documents provides an overview of LED T8 replacement lamps and helps define a reasonable minimum performance level for the...

16

Retail Replacement Lamps  

Broader source: Energy.gov [DOE]

Annual CALiPER testing of A19, G25, candelabra, night light, MR16/PAR16, PAR20, and PAR30 replacement lamps purchased directly from store shelves offers insights on performance trends from year to year. The report findings offer valuable insights for manufacturers and retailers alike.

17

LED Linear Lamps and Troffer Lighting  

Broader source: Energy.gov [DOE]

The CALiPER program performed a series of investigations on linear LED lamps. Each report in the series covers the performance of up to 31 linear LED lamps, which were purchased in late 2012 or 2013. The first report focuses on bare lamp performance of LED T8 replacement lamps and subsequent reports examine performance in various troffers, as well as cost-effectiveness. There is also a concise guidance document that describes the findings of the Series 21 studies and provides practical advice to manufacturers, specifiers, and consumers (Report 21.4: Summary of Linear (T8) LED Lamp Testing , 5 pages, June 2014).

18

LED PAR38 Lamps  

Broader source: Energy.gov [DOE]

The following CALiPER reports provide detailed analysis of LED PAR38 lamp performance, covering basic performance characteristics as well as subjective evaluation of beam, shadow, and color quality. Pending reports will offer analysis on flicker, dimming and power quality characteristics; stress testing; and lumen and chromaticity maintenance. These reports are intended to educate the industry on market trends, potential issues, and important areas for improvement.

19

Lamp Divisions  

Office of Legacy Management (LM)

--- --- /A;; i :' r%i;in~house ilEc;' i:Z3:~cra:ion Lamp Divisions , _.. (I +i. 0 :,,,rg. . I . . -= i?e p/q! qe)-' &se pw E.rcale?l iev, Je!sey 07m March 20, 1 gs? ::r . J. A. Jones I ti. 5. Muclear Regulatory Commission .> = ..- haterials Licensing Branch -s - ,.I, - - Division of Fuel Cycle and hateri al Safety LY. , $2 - _ . ' -' . 3 _- - Yeshington, C. C. 2@555 - :_ :--, =-- -- .-?J -.: y...., : :- 7 Dear Mr. Jones : y-- --, ? . *I 2=15 2 r; X -P The following is our final report of the decontamination efZor?s takz in our Bui Iding 7 basement and wi 11 also serve to update our report i& November 12, 1980. As stated in NRC' s report of December 22, 1983, two closeout inspect ions were conducted by your King of Prussia off i ce on November 21 and December 2,

20

LED Replacements for Linear Fluorescent Lamps Webcast  

Broader source: Energy.gov [DOE]

In this June 20, 2011 webcast on LED products marketed as replacements for linear fluorescent lamps, Jason Tuenge of the Pacific Northwest National Laboratory (PNNL) discussed current Lighting...

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


21

Retail Lamps Study 3.1: Dimming, Flicker, and Power Quality Characteristics of LED A Lamps.  

SciTech Connect (OSTI)

To date, all three reports in the retail lamps series have focused on basic performance parameters, such as lumen output, efficacy, and color quality. This report goes a step further, examining the photoelectric characteristics (i.e., dimming and flicker) of a subset of lamps from CALiPER Retails Lamps Study 3. Specifically, this report focuses on the dimming, power quality, and flicker characteristics of 14 LED A lamps, as controlled by four different retail-available dimmers. The results demonstrate notable variation across the various lamps, but little variation between the four dimmers. Overall, the LED lamps: ~tended to have higher relative light output compared to the incandescent and halogen benchmark at the same dimmer output signal (RMS voltage). The lamps dimming curves (i.e., the relationship between control signal and relative light output) ranged from linear to very similar to the square-law curve typical of an incandescent lamp. ~generally exhibited symmetrical behaviorthe same dimming curvewhen measured proceeding from maximum to minimum or minimum to maximum control signal. ~mostly dimmed below 10% of full light output, with some exceptions for specific lamp and dimmer combinations ~exhibited a range of flicker characteristics, with many comparing favorably to the level typical of a magnetically-ballasted fluorescent lamp through at least a majority of the dimming range. ~ always exceeded the relative (normalized) efficacy over the dimming range of the benchmark lamps, which rapidly decline in efficacy when they are dimmed. This report generally does not attempt to rank the performance of one product compared to another, but instead focuses on the collective performance of the group versus conventional incandescent or halogen lamps, the performance of which is likely to be the baseline for a majority of consumers. Undoubtedly, some LED lamps perform betteror more similar to conventional lampsthan others. Some perform desirably for one characteristic, but not others. Consumers (and specifiers) may have a hard time distinguishing better-performing lamps from one another; at this time, physical experimentation is likely the best evaluation tool.

Royer, Michael P.; Poplawski, Michael E.; Brown, Charles C.

2014-12-14T23:59:59.000Z

22

Turning on LAMP  

ScienceCinema (OSTI)

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.

Bostedt, Christoph

2014-07-16T23:59:59.000Z

23

Turning on LAMP  

SciTech Connect (OSTI)

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.

Bostedt, Christoph

2014-06-30T23:59:59.000Z

24

Fluorescent Tube Lamps  

Broader source: Energy.gov [DOE]

FEMP temporarily suspended its energy efficiency requirements for fluorescent tube lamps as it evaluates the market impact of the pending 2012 minimum efficiency standards for fluorescent lamps. The program will issue updated energy efficiency requirements when the market distribution of this product category stabilizes and when doing so has the potential to result in significant Federal energy savings.

25

CALiPER Retail Lamps Study 3  

SciTech Connect (OSTI)

The CALiPER program first began investigating LED lamps sold at retail stores in 2010, purchasing 33 products from eight retailers and covering six product categories. The findings revealed a fragmented marketplace, with large disparities in performance of different products, accuracy of manufacturer claims, and offerings from different retail outlets. Although there were some good products, looking back many would not be considered viable competitors to other available options, with too little lumen output, not high enough efficacy, or poor color quality. CALiPER took another look in late 2011purchasing 38 products of five different types from nine retailers and the improvement was marked. Performance was up; retailer claims were more accurate; and the price per lumen and price per unit efficacy were down, although the price per product had not changed much. Nonetheless, there was still plenty of room for improvement, with the performance of LED lamps not yet reaching that of well-established classes of conventional lamps (e.g., 75 W incandescent A19 lamps). Since the second retail lamp study was published in early 2012, there has been substantial progress in all aspects of LED lamps available from retailers. To document this progress, CALiPER again purchased a sample of lamps from retail stores 46 products in total, focusing on A19, PAR30, and MR16 lamps but instead of a random sample, sought to select products to answer specific hypotheses about performance. These hypotheses focused on expanding ranges of LED equivalency, the accuracy of lifetime claims, efficacy and price trends, as well as changes to product designs. Among other results, key findings include: There are now very good LED options to compete with 60 W, 75 W, and 100 W incandescent A19 lamps, and 75 W halogen PAR30 lamps. MR16 lamps have shown less progress, but there are now acceptable alternatives to 35 W, 12 V halogen MR16 lamps and 50 W, 120 V halogen MR16 lamps for some applications. Other uses, such as in enclosed luminaires, may require more development. At the same price point, lamps purchased in 2013 tended to have higher output and slightly higher efficacy than in 2011 or 2010. Over 30% of the products purchased in 2013 exceeded the maximum efficacy measured in 2011 (71 lm/W), with the most efficacious product measured at 105 lm/W. There appears to be increasing consistency in color quality, with a vast majority of products having a CCT of 2700 K or 3000 K and a CRI between 80 and 85. There were also fewer poor performing products tested and more high-performing products available in 2013 than in previous years. The accuracy of equivalency and performance claims was better than in 2011, but remains a concern, with 43% of tested products failing to completely meet their equivalency claim and 20% of products failing to match the manufacturers performance data. Although progress has been substantial, on average LED lamps remain more expensive than other energy efficiency lighting technologies -- although some aspects can be superior. Although not universal to all product lines or all product types, the issue of insufficient lumen output from LED lamps is waning. Thus, manufacturers can focus on other issues, such as reducing cost, improving electrical/dimmer compatibility, eliminating flicker, or improving color quality. While these issues are not inherent to all products, they remain a concern for the broader market.

Royer, Michael P.; Beeson, Tracy A.

2014-02-01T23:59:59.000Z

26

Magnetic fluorescent lamp  

DOE Patents [OSTI]

The radiant emission of a mercury-argon discharge in a fluorescent lamp assembly is enhanced by providing means for establishing a magnetic field with lines of force along the path of electron flow through the bulb of the lamp assembly, to provide Zeeman splitting of the ultraviolet spectral line. Optimum results are obtained when the magnetic field strength causes a Zeeman splitting of approximately 1.7 times the thermal line width.

Berman, S.M.; Richardson R.W.

1983-12-29T23:59:59.000Z

27

Energy-efficient incandescent lamp: Final report  

E-Print Network [OSTI]

of Energy Conserving Incandescent Lamps", J . Brett, R.July 1981. "Filaments for Incandescent Lamps with Radiation20-22 "Energy Saving Incandescent Lamps with Infrared

Verderber, R.

2010-01-01T23:59:59.000Z

28

The National Energy Policy Act and lamp replacement options  

SciTech Connect (OSTI)

The National Policy Act of 1992 involves the creation of energy efficiency standards for a wide range of products including fluorescent and incandescent lamps. Minimum efficacy (lumens per watt) and color rendering index (CRI) standards are mandated for the popular fluorescent lamps: four-foot medium bi-pin, two-foot U-bent, eight-foot slimline and eight-foot high output. Minimum efficacies are mandated for specific incandescent R and PAR reflector lamps. These standards will affect selected colors and designs of fluorescent lamps, the most significant being the standard lamps in the cool white and warm white colors. The incandescent reflector lamps will include the R-30, R-40, PAR-38 lamps above 40 watts, excluding the halogen types. These efficiency and color rendering standards will require end-users and specifiers to select replacement fluorescent lamps from a range of performance characteristics (lumen output, efficacy, CRI and price). The choice of replacement for the R and PAR incandescent lamps will include the halogen designs and compact fluorescent designs. In this paper, replacement options will be analyzed and discussed and the effect of these options on the performance of the lighting system will be explored in detail.

Ryerson, C.

1995-06-01T23:59:59.000Z

29

Impending U.S. lighting standards will boost market for halogen-infrared lamps: New product line expanding  

SciTech Connect (OSTI)

Many of the incandescent floodlights and spotlights manufactured today will not meet lighting efficiency standards taking effect in the US in 1995. As these models cease production, demand will grow for higher efficiency units to fill this huge market, which now totals about 100 million lamps per year. One prime contender is a new class of halogen lamps that use a spectrally selective coating to reflect heat back onto the filament, reducing the amount of electricity needed to generate light. GE Lighting`s Halogen-IR line is the only series of such lamps currently available to replace the conventional floodlights and spotlights that will be banned by the new standards. Other manufacturers may adopt the technology, however, and the Japanese producer Ushio already sells in the US a line of smaller halogen lamps with a similar heat-reflective coating. In terms of efficacy and lifetime, Halogen-IR lamps out perform standard incandescents and standard halogens, but fall far short of fluorescent, metal halide, and high-pressure sodium sources. These other lighting systems are more appropriate and cost-effective than incandescents for many ambient lighting applications. For accent lighting and other tasks that are best suited to incandescent lighting, however, the Halogen-IR lamp is often a superior choice.

Sardinsky, R.; Shepard, M.

1993-12-31T23:59:59.000Z

30

Application Summary Report 22: LED MR16 Lamps  

SciTech Connect (OSTI)

This report analyzes the independently tested photometric performance of 27 LED MR16 lamps. It describes initial performance based on light output, efficacy, distribution, color quality, electrical characteristics, and form factor, with comparisons to a selection of benchmark halogen MR16s and ENERGY STAR qualification thresholds. Three types of products were targeted. First, CALiPER sought 3000 K lamps with the highest rated lumen output (i.e., at least 500 lm) or a claim of equivalency to a 50 W halogen MR16 or higher. The test results indicate that while the initial performance of LED MR16s has improved across the board, market-available products still do not produce the lumen output and center beam intensity of typical 50 W halogen MR16 lamps. In fact, most of the 18 lamps in this category had lower lumen output and center beam intensity than a typical 35 W halogen MR16 lamp. Second, CALiPER sought lamps with a CRI of 90 or greater. Only four manufacturers were identified with a product in this category. CALiPER testing confirmed the performance of these lamps, which are a good option for applications where high color fidelity is needed. A vast majority of the LED MR16 lamps have a CRI in the low 80s; this is generally acceptable for ambient lighting, but may not always be acceptable for focal lighting. For typical LED packages, there is a fundamental tradeoff between CRI and efficacy, but the lamps in the high-CRI group in this report still offer comparable performance to the rest of the Series 22 products in other performance areas. Finally, CALiPER sought lamps with a narrow distribution, denoted as a beam angle less than 15. Five such lamps were purchased. Notably, no lamp was identified as having high lumen output (500 lumens or greater), high CRI (90 or greater), a narrow distribution (15 or less), and an efficacy greater than 60 lm/W. This would be an important achievement for LED MR16s especially if output could reach approximately 700 800 lumens, or the approximate equivalent of a 50 W halogen MR16 lamp. Many factors beyond photometric performance should be considered during specification. For example, performance over time, transformer and dimmer compatibility, and total system performance are all critical to a successful installation. Subsequent CALiPER reports will investigate more complex issues.

Royer, Michael P.

2014-07-23T23:59:59.000Z

31

Burst Radio-Frequency Excited Pulsed Hollow-Cathode Lamp  

Science Journals Connector (OSTI)

Transient emission characteristics of a hollow-cathode lamp driven by a pulsed current in combination with a radio-frequency burst signal are described. The radio-frequency field...

Araki, Tsutomu; Walters, John P; Minami, Shigeo

1980-01-01T23:59:59.000Z

32

The Energy Efficiency of the U.S Fluorescent Lamp Ballast Industry  

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

The Energy Efficiency of the U.S Fluorescent Lamp Ballast Industry The Energy Efficiency of the U.S Fluorescent Lamp Ballast Industry Speaker(s): Francis Rubinstein Date: February 14, 2008 - 12:00pm Location: 90-3122 Fluorescent lamp ballasts are subject to DOE appliance standards and rulemaking. But currently, only ballasts for older fluorescent lamp types, such as T-12 lamps are subject to minimum efficacy limits. The majority of fluorescent lamps now being shipped (T-8 and T-5 types) type are operated by ballasts that will not be subject to DOE rule until 2011. The metric used by DOE for characterizing the electrical efficiency of the fluorescent lamp-ballast system is called Ballast Efficacy Factor (BEF). Because BEF is not normalized, it is of limited utility for rulemaking and is useless for procurement. But by normalizing BEF to the total lamp power, I have

33

Max Tech and Beyond: Fluorescent Lamps  

E-Print Network [OSTI]

Fluorescent Lamps and Incandescent Reflector Lamps; Finalmany end- use applications. Incandescent Outdoor Stationaryof color compared with the incandescent reference source is

Scholand, Michael

2012-01-01T23:59:59.000Z

34

Information Resources: LED Replacements for Linear Fluorescent Lamps  

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

Replacements for Linear Fluorescent Lamps Webcast Replacements for Linear Fluorescent Lamps Webcast In this June 20, 2011 webcast on LED products marketed as replacements for linear fluorescent lamps, Jason Tuenge of the Pacific Northwest National Laboratory (PNNL) discussed current Lighting Facts-listed products as well as products evaluated in the latest CALiPER reports. Eric Richman, also of PNNL, reported on a recently completed GATEWAY demonstration project, in which LED and fluorescent lamps were installed in a variety of recessed troffer luminaires for comparison in an office environment. The presentation concluded with a discussion of specifications listed in a newly updated technology fact sheet. View presentation slides View the text-alternative version View the webcast (WMV 16 MB) Download Windows Media Player

35

Perceptions of compact fluorescent lamps in the residential market  

SciTech Connect (OSTI)

Compact fluorescent lamps offer significant energy savings over other forms of residential lighting and last up to 10 times longer than conventional incandescent bulbs. In order to better understand existing barriers to acceptance and future opportunities for growth of compact fluorescent lighting in the residential retrofit sector, a three stage research project was designed and conducted by MACRO Consulting, Inc. Assessment of whether or not the benefits of compact fluorescent lamps are sufficient to overcome price resistance was one of the major purposes of this project. Residential customers were interviewed in focus group sessions to help determine key issues and motivating forces in the lighting/energy saving/cost saving equation. Residential customers in 5 major market areas were contacted by telephone, and data about their awareness, knowledge and use of compact fluorescent lighting were collected. These customers also participated in an attribute rating exercise in which compact fluorescent lamps were compared with fluorescent tubes and incandescent bulbs on a series of product attributes. A price elasticity exercise was also conducted. Teleconferences with retailers of compact fluorescent lamps were conducted in order to explore their knowledge of and attitudes towards compact fluorescent lamps. Customers agree that energy savings and longer life are both positive attributes for residential lighting products, but they are not yet ready to make the switch away from inexpensive, versatile and readily available incandescent bulbs to compact fluorescent lamps. Compact fluorescent lamps are rated poorly (even by satisfied'' users) on each of seven positive attributes of home lighting. Major barriers to increased use of compact fluorescent lamps include price, convenience, and performance. Prices above $10 are considered outrageous''. Product improvements are needed for appearance, light output and versatility.

Weiner, J.; Campbell, C.J. (Macro Consulting, Inc., Mountain View, CA (United States))

1992-07-01T23:59:59.000Z

36

Energy Cost Calculator for Compact Fluorescent Lamps | Department...  

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

project. Modify the default values to suit your project requirements. Existing incandescent lamp wattage Watts Incandescent lamp cost dollars Incandescent lamp life 1000 hours...

37

Health Implications of New Lamp Technology Progress with Lamp Safety  

E-Print Network [OSTI]

: ­ ACGIH Threshold Limit Values, UV, lasers, etc. ­ ANSI Z136.1 for lasers with MPEs 0.1 ps -30 ks ­ ANSI RP 27.1 to ANSI RP 27.3 Lamp Safety · Internationally: ­ International Commission on Non

California at Davis, University of

38

Capacitive sensing with a fluorescent lamp  

E-Print Network [OSTI]

This work presents a modified fluorescent lamp that can be used as a capacitive sensing system. The lamp sensor measures changes in the electric fields emitted from the fluorescent bulbs in order to deduce the presence and ...

Cooley, John Jacob

2007-01-01T23:59:59.000Z

39

Eddy current NDE performance demonstrations using simulation tools  

SciTech Connect (OSTI)

To carry out performance demonstrations of the Eddy-Current NDE processes applied on French nuclear power plants, EDF studies the possibility of using simulation tools as an alternative to measurements on steam generator tube mocks-up. This paper focuses on the strategy led by EDF to assess and use code{sub C}armel3D and Civa, on the case of Eddy-Current NDE on wears problem which may appear in the U-shape region of steam generator tubes due to the rubbing of anti-vibration bars.

Maurice, L. [EDF - CEIDRE, 2 rue Ampere, 93206 Saint-Denis Cedex 1 (France); Costan, V.; Guillot, E.; Thomas, P. [EDF - R and D, THEMIS, 1, avenue du General de Gaulle, 92141 Clamart (France)

2013-01-25T23:59:59.000Z

40

DOE Publishes CALiPER Snapshot Report on LED A Lamps  

Broader source: Energy.gov [DOE]

DOE's CALiPER program has released a Snapshot Report on LED A lamps, 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

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


41

Max Tech and Beyond: Fluorescent Lamps  

E-Print Network [OSTI]

varies by watts of power per foot of electrical arc in theFoot Linear Fluorescent Lamps Efficacy Life Lumens Type Base Power

Scholand, Michael

2012-01-01T23:59:59.000Z

42

Covered Product Category: Compact Fluorescent Lamps  

Broader source: Energy.gov [DOE]

FEMP provides acquisition guidance across a variety of product categories, including compact fluorescent lamps (CFLs), which are an ENERGY STAR-qualified product category.

43

Energy saving controller for fluorescent lamps.  

E-Print Network [OSTI]

??Although fluorescent lamp is a very efficient lighting device in daily life, still the high harmonic distortion and low power factor cause unnecessary energy consumption. (more)

Cheong, Zhi Xiong

2010-01-01T23:59:59.000Z

44

Energy conservation treatment in Exxon's the lamp  

Science Journals Connector (OSTI)

In this article, Mary Ann Ferguson-DeThorne examines The Lamp, a publication sponsored by Exxon, to determine when and to what extent Exxon informed The Lamp's audience about an impending energy shortage and possible energy conservation methods, to learn if The Lamp's energy conservation messages reflected Exxon's stated conservation positions, and to compare The Lamp to mass-circulation news magazines in terms of how well it alerted its audience to the impending energy shortage. The crucial period of study here is 19711973; prior to the Arab oil boycott and the 1974 Congressional investigation of charges that the large oil companies had contrived shortages to eliminate competition.

Mary Ann Ferguson-DeThorne

1978-01-01T23:59:59.000Z

45

General Service LED Lamps | Department of Energy  

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

DOE SSL technology fact sheet that compares general service LED light bulbs with incandescent and CFL bulbs. ledgeneral-service-lamps.pdf More Documents & Publications LED...

46

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

SciTech Connect (OSTI)

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

Lin, Jiang

2002-04-11T23:59:59.000Z

47

CALiPER Report 20.3: Robustness of LED PAR38 Lamps  

SciTech Connect (OSTI)

Three samples of 40 of the Series 20 PAR38 lamps underwent multi-stress testing, whereby samples were subjected to increasing levels of simultaneous thermal, humidity, electrical, and vibrational stress. The results do not explicitly predict expected lifetime or reliability, but they can be compared with one another, as well as with benchmark conventional products, to assess the relative robustness of the product designs. On average, the 32 LED lamp models tested were substantially more robust than the conventional benchmark lamps. As with other performance attributes, however, there was great variability in the robustness and design maturity of the LED lamps. Several LED lamp samples failed within the first one or two levels of the ten-level stress plan, while all three samples of some lamp models completed all ten levels. One potential area of improvement is design maturity, given that more than 25% of the lamp models demonstrated a difference in failure level for the three samples that was greater than or equal to the maximum for the benchmarks. At the same time, the fact that nearly 75% of the lamp models exhibited better design maturity than the benchmarks is noteworthy, given the relative stage of development for the technology.

Poplawski, Michael E.; Royer, Michael P.; Brown, Charles C.

2014-12-31T23:59:59.000Z

48

A SPICE Compatible Model of High Intensity Discharge Lamps  

E-Print Network [OSTI]

from the arc's * Corresponding author behavior of HID lamps. This model are derived from the arc-linear resistance of the lamp, is the global specific conductance of the plasma, V is the volume of the plasma, L is the length of plasma and S is the cross section. ~ Vin G1 Lamp Model Ballast v(lamp) i(lamp) Analytical

49

General service incandescent lamp with improved efficiency  

SciTech Connect (OSTI)

A high efficiency general service incandescent lamp is disclosed. The disclosed improved general service incandescent lamp has an outer and an inner envelope. The inner envelope has a relatively small housing containing a halogen gas and a relatively high pressure efficient fill-gas and in which a low voltage filament is spatially disposed therein.

Berlec, I.

1985-06-18T23:59:59.000Z

50

Text-Alternative Version: CALiPER Report Series 20 on LED PAR38 Lamps  

Broader source: Energy.gov [DOE]

Michael Royer, Lighting Engineer, Pacific Northwest National Laboratory: The CALiPER program looks at typical LED lamp performance attributes. As we've gone through the progression of reports, we...

51

Portable lamp with dynamically controlled lighting distribution  

DOE Patents [OSTI]

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.

Siminovitch, Michael J. (Pinole, CA); Page, Erik R. (Berkeley, CA)

2001-01-01T23:59:59.000Z

52

Solid-state lamp with integral occupancy sensor  

E-Print Network [OSTI]

Previous work demonstrated a retrofit proximity detector for fluorescent lamps using the lamp's own stray electric fields. This paper extends the retrofit sensor system to a solid-state (LED) lamp. The design and implementation ...

Cooley, John J.

53

COST EFFECTIVENESS OF LONG LIFE INCANDESCENT LAMPS AND ENERGY BUTTONS  

E-Print Network [OSTI]

as any 1ong-li incandescent lamp or system evaluated in thisEFFECTIVENESS OF LONG LIFE INCANDESCENT LAMPS AND ENERGYEFFECTIVENESS OF LONG LIFE INCANDESCENT LAMPS AND ENERGY

Verderber, Rudy

2013-01-01T23:59:59.000Z

54

DuraLamp USA: Order (2010-CE-0912)  

Broader source: Energy.gov [DOE]

DOE ordered DuraLamp USA, Inc. to pay a $2,500 civil penalty after finding DuraLamp USA had failed to certify that model PAR 30, an incandescent reflector lamp, complies with the applicable energy conservation standards.

55

Tungsten wire for incandescent lamps  

SciTech Connect (OSTI)

Tungsten wire for incandescent lamp filaments must operate at high temperatures and for long times. To meet these requirements, the grain morphology of the wire must be controlled to reduce the propensity for grain boundary sliding. The morphology is a function of the distribution of very small pockets of potassium in the wire and the mechanical processing from ingot to wire. The behavior of the filament is directly related to the grain morphology. This paper describes the mechanism by which the potassium is incorporated into and distributed in the ingot. The elongation and spheroidization of the bubbles during hot rolling and swaging is also examined and related to the grain morphology of wire. Some indications of the relationship between grain morphology and filament behavior are also given.

Walter, J.L.; Briant, C.L. (General Electric Corporate Research and Development, Schenectady, NY (USA))

1990-09-01T23:59:59.000Z

56

Assessing current vehicle performance and simulating the performance of hydrogen and hybrid cars  

Science Journals Connector (OSTI)

A measure of the efficiency in transforming energy input into transport work is defined and applied to road vehicles as well as to sea, air and rail vehicles for passenger or freight transportation. The insight obtained with this measure is compared with the results of applying the conventional measure of kilometres per unit of energy for current fleets of vehicles. Then, simulation methods are used to assess the performance of fuel cell vehicles, electric vehicles and hybrids between the two. The latter are found to provide an optimum performance for a small, efficient passenger car.

Bent Srensen

2007-01-01T23:59:59.000Z

57

Current Capabilities of the Fuel Performance Modeling Code PARFUME  

SciTech Connect (OSTI)

The success of gas reactors depends upon the safety and quality of the coated particle fuel. A fuel performance modeling code (called PARFUME), which simulates the mechanical and physico-chemical behavior of fuel particles during irradiation, is under development at the Idaho National Engineering and Environmental Laboratory. Among current capabilities in the code are: 1) various options for calculating CO production and fission product gas release, 2) a thermal model that calculates a time-dependent temperature profile through a pebble bed sphere or a prismatic block core, as well as through the layers of each analyzed particle, 3) simulation of multi-dimensional particle behavior associated with cracking in the IPyC layer, partial debonding of the IPyC from the SiC, particle asphericity, kernel migration, and thinning of the SiC caused by interaction of fission products with the SiC, 4) two independent methods for determining particle failure probabilities, 5) a model for calculating release-to-birth (R/B) ratios of gaseous fission products, that accounts for particle failures and uranium contamination in the fuel matrix, and 6) the evaluation of an accident condition, where a particle experiences a sudden change in temperature following a period of normal irradiation. This paper presents an overview of the code.

G. K. Miller; D. A. Petti; J. T. Maki; D. L. Knudson

2004-09-01T23:59:59.000Z

58

(SSS)EM Current Project Performance.xls  

Office of Environmental Management (EM)

Number Project Name Current Critical Decision Original Approved Cost Original Completion Date Rebaselines Rebaselined Project Cost Rebaselined Completion Date Site 05-D-405 Salt...

59

Cost effectiveness of long life incandescent lamps and energy buttons  

SciTech Connect (OSTI)

Long-life replacement lamps for the incandescent lamp have been evaluated with regard to their cost effectiveness. The replacements include the use of energy buttons that extend lamp life as well as an adaptive fluorescent circline lamp that will fit into existing incandescent lamp sockets. The initial, operating, and replacement costs for one million lumen hours are determined for each lamp system. It is found that the most important component lighting cost is the operating cost. Using lamps that are less efficient or devices that cause lamps to operate less efficiently are not cost-effective. The adaptive fluorescent circline lamp, even at an initial unit cost of $20.00, is the most cost-effective source of illumination compared to the incandescent lamp and lamp systems examined.

Verderber, R.; Morse, O.

1980-04-07T23:59:59.000Z

60

Lamp system for uniform semiconductor wafer heating  

DOE Patents [OSTI]

A lamp system with a very soft high-intensity output is provided over a large area by water cooling a long-arc lamp inside a diffuse reflector of polytetrafluorethylene (PTFE) and titanium dioxide (TiO.sub.2) white pigment. The water is kept clean and pure by a one micron particulate filter and an activated charcoal/ultraviolet irradiation system that circulates and de-ionizes and biologically sterilizes the coolant water at all times, even when the long-arc lamp is off.

Zapata, Luis E. (Livermore, CA); Hackel, Lloyd (Livermore, CA)

2001-01-01T23:59:59.000Z

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


61

Compact fluorescent lamp applications in luxury hotels  

SciTech Connect (OSTI)

Over the past several years, consumers, lighting designers, and energy conservationists have paid increasing attention to the special characteristics of compact fluorescent lamps (CFLs). CFLs can typically be used to replace incandescent lamps of three to four times their own wattage, and their color rendering indices (CRIs)-80 to 85-make them virtually indistinguishable from incandescents. The typical 10,0000-hour life of a CFL often makes savings in labor its most desirable feature when compared to a shorter-lived incandescent lamp.

Gilleskie, R.J.

1996-01-01T23:59:59.000Z

62

CALiPER Report 21.3: Cost-Effectiveness of Linear (T8) LED Lamps  

SciTech Connect (OSTI)

Meeting performance expectations is important for driving adoption of linear LED lamps, but cost-effectiveness may be an overriding factor in many cases. Linear LED lamps cost more initially than fluorescent lamps, but energy and maintenance savings may mean that the life-cycle cost is lower. This report details a series of life-cycle cost simulations that compared a two-lamp troffer using LED lamps (38 W total power draw) or fluorescent lamps (51 W total power draw) over a 10-year study period. Variables included LED system cost ($40, $80, or $120), annual operating hours (2,000 hours or 4,000 hours), LED installation time (15 minutes or 30 minutes), and melded electricity rate ($0.06/kWh, $0.12/kWh, $0.18/kWh, or $0.24/kWh). A full factorial of simulations allows users to interpolate between these values to aid in making rough estimates of economic feasibility for their own projects. In general, while their initial cost premium remains high, linear LED lamps are more likely to be cost-effective when electric utility rates are higher than average and hours of operation are long, and if their installation time is shorter.

Miller, Naomi J.; Perrin, Tess E.; Royer, Michael P.

2014-05-27T23:59:59.000Z

63

Compact light source performance in recessed type luminaires  

SciTech Connect (OSTI)

Photometric comparisons were made with an indoor, recessed, type luminaire using incandescent, high intensity discharge and compact fluorescent lamps. The test results show substantial performance advantages, as expected, for the discharge light sources where the efficacy gains can be in the order for 400% even when including the ballast losses associated with the discharge lamps. The candlepower distribution patterns emerging from these luminaries are also different from those associated with the baseline incandescent lamps, and which are in some ways, even more desirable from a uniformity of illuminance perspective. A section on fluorescent lamp starting is also included which describes a system having excellent starting characteristics in terms of electrode starting temperature (RH/RC technique), proper operating frequency to minimize unwanted IR interactions, and satisfactory current crest factor values to help insure life performance.

Hammer, E.E.

1998-11-01T23:59:59.000Z

64

LED lamp power management system and method  

DOE Patents [OSTI]

An LED lamp power management system and method including an LED lamp having an LED controller 58; a plurality of LED channels 60 operably connected to the LED controller 58, each of the plurality of LED channels 60 having a channel switch 62 in series with at least one shunted LED circuit 83, the shunted LED circuit 83 having a shunt switch 68 in parallel with an LED source 80. The LED controller 58 reduces power loss in one of the channel switch 62 and the shunt switch 68 when LED lamp electronics power loss (P.sub.loss) exceeds an LED lamp electronics power loss limit (P.sub.lim); and each of the channel switches 62 receives a channel switch control signal 63 from the LED controller 58 and each of the shunt switches 68 receives a shunt switch control signal 69 from the LED controller 58.

Gaines, James; Clauberg, Bernd; Van Erp, Josephus A. M.

2013-03-19T23:59:59.000Z

65

MagLab - Arc Lamp Tutorial  

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

with 2,000 cells to create an arc across a 4-inch (100 millimeter) gap. When suitable electric generators became available in the late 1870s, the practical use of arc lamps began....

66

Building Technologies Office: Fluorescent and Incandescent Lamps Public  

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

Fluorescent and Fluorescent and Incandescent Lamps Public Meeting to someone by E-mail Share Building Technologies Office: Fluorescent and Incandescent Lamps Public Meeting on Facebook Tweet about Building Technologies Office: Fluorescent and Incandescent Lamps Public Meeting on Twitter Bookmark Building Technologies Office: Fluorescent and Incandescent Lamps Public Meeting on Google Bookmark Building Technologies Office: Fluorescent and Incandescent Lamps Public Meeting on Delicious Rank Building Technologies Office: Fluorescent and Incandescent Lamps Public Meeting on Digg Find More places to share Building Technologies Office: Fluorescent and Incandescent Lamps Public Meeting on AddThis.com... About Standards & Test Procedures Implementation, Certification & Enforcement

67

On the performance of molecular dynamics applications on current high-end systems  

Science Journals Connector (OSTI)

...exploitation of current high performance computing (HPC) platforms in molecular...capability computing|high performance computing| 1. Introduction Molecular...places increasing demands on high performance computing (HPC) resources. A vast...

2005-01-01T23:59:59.000Z

68

Energy Cost Calculator for Compact Fluorescent Lamps | Department of Energy  

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

Compact Fluorescent Lamps Compact Fluorescent Lamps Energy Cost Calculator for Compact Fluorescent Lamps October 8, 2013 - 2:18pm Addthis This tool calculates the payback period for your calc retrofit project. Modify the default values to suit your project requirements. Existing incandescent lamp wattage Watts Incandescent lamp cost dollars Incandescent lamp life 1000 hours calc wattage Watts calc cost dollars calc life (6000 hours for moderate use, 10000 hours for high use) 8000 hours Number of lamps in retrofit project Hours operating per week hours Average cost of electricity 0.06 $/kWh Relamper labor costs $/hr Time taken to retrofit all lamps in this project min Time taken to relamp one lamp min Type of Relamping Practiced: Group Relamping: Calculate Simple Payback Period months

69

Comparison of technologies for new energy-efficient lamps  

SciTech Connect (OSTI)

Energy-efficient light bulbs are being developed to replace the incandescent lamp where they can satisfy the design criteria and be used in sockets that have long hours of annual use. The four technologies discussed here include the compact fluorescent lamp, coated-filament lamp, electrodeless fluorescent lamp, and compact high-intensity discharge lamp. The systems demonstrate efficacy improvements of two to four times that of their incandescent counterparts. These new lamps have required considerable advances in lamp technology. They offer the potential for achieving efficacies close to 80 lumens per watt. These new lamps will reduce the energy used annually by incandescent lamps (190 BkWh) by more than 50% in the 1990s, at which times they will be commonly employed.

Verderber, R.R.; Rubinstein, F.R.

1983-06-01T23:59:59.000Z

70

Comparison of technologies for new energy-efficient lamps  

SciTech Connect (OSTI)

Energy-efficient light bulbs are being developed to replace the incandescent lamp where they can satisfy the design criteria and be used in sockets that have long hours of annual use. The four technologies discussed include the compact fluorescent lamp, coated-filament lamp, electrodeless fluorescent lamp, and compact high-intensity discharge lamp. The systems demonstrate efficacy improvements of two to four times that of their incandescent counterparts. These new lamps have required considerable advances in lamp technology. They offer the potential for achieving efficacies close to 80 lm/W. These new lamps will reduce the energy used annually by incandescent lamps (190 billion kWh) by more than 50 percent in the 1990's, at which times they will be commonly employed.

Verderber, R.R.; Rubinstein, F.M.

1984-09-01T23:59:59.000Z

71

Photovoltaic experiment using light from a solar simulator lamp  

Science Journals Connector (OSTI)

A photovoltaic cellexperiment utilizing the convenience of a solar simulating type lamp is described. The circuit for obtaining the cell characteristic drives an X?Y plotter to graph continuously the characteristics from short circuit current to the open circuit voltage. Calibration methods and their limitation are discussed for estimating the irradiance to determine the light conversion efficiency of the cell. The diode junction nature of the cell is clearly supported by the agreement between experiment and theory. The experiment should be exceptionally suitable for an undergraduate physics laboratory experiment.

R. H. Chow

1980-01-01T23:59:59.000Z

72

Assessing the Performance of 5mm White LED Light Sources for Developing-Country Applications  

E-Print Network [OSTI]

performance variations. Incandescent and fluorescent lightbetter than the common incandescent lamp. Off-grid lighting

Mills, Evan

2007-01-01T23:59:59.000Z

73

Laboratory Evaluation of LED T8 Replacement Lamp Products  

SciTech Connect (OSTI)

A report on a lab setting analysis involving LED lamps intended to directly replace T8 fluorescent lamps (4') showing light output, power, and economic comparisons with other fluorescent options.

Richman, Eric E.; Kinzey, Bruce R.; Miller, Naomi J.

2011-05-23T23:59:59.000Z

74

Max Tech and Beyond: High-Intensity Discharge Lamps  

E-Print Network [OSTI]

formation of the electric discharge arc and the metals emitdefined as electric discharge lamps in which the arc tubelamp - an electric discharge lamp in which the arc tube wall

Scholand, Michael

2012-01-01T23:59:59.000Z

75

Text-Alternative Version: LED Replacements for Linear Fluorescent Lamps  

Broader source: Energy.gov [DOE]

Below is the text-alternative version of the "LED Replacements for Linear Fluorescent Lamps" webcast, held June 20, 2011.

76

Medium Base Compact Fluorescent Lamps | Department of Energy  

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

Templates for Reporting Test Results mediumbasecfltestreporttemplatev1.1.xlsx More Documents & Publications Fluorescent Lamp Ballasts Showerheads Beverage Vending Machines...

77

Mercury Lamps Recycling Fluorescent light-tubes, compact fluorescent bulbs, mercury and sodium vapor lamps, ultraviolet and  

E-Print Network [OSTI]

Mercury Lamps Recycling Fluorescent light-tubes, compact fluorescent bulbs, mercury and sodium vapor lamps, ultraviolet and HID (high-intensity discharge) lamps and all other mercury containing labeled for shipment to a recycling plant for mercury, glass and aluminum recovery. The beneficial re

Baker, Chris I.

78

LED lamp color control system and method  

SciTech Connect (OSTI)

An LED lamp color control system and method including an LED lamp having an LED controller 58; and a plurality of LED channels 60 operably connected to the LED controller 58, each of the plurality of LED channels 60 having a channel switch 62 in series with at least one shunted LED circuit 83, the shunted LED circuit 83 having a shunt switch 68 in parallel with an LED source 80. The LED controller 58 determines whether the LED source 80 is in a feedback controllable range, stores measured optical flux for the LED source 80 when the LED source 80 is in the feedback controllable range, and bypasses storing the measured optical flux when the LED source 80 is not in the feedback controllable range.

Gaines, James; Clauberg, Bernd; Van Erp, Josephus A.M.

2013-02-05T23:59:59.000Z

79

Fluorescent ballast and lamp disposal issues  

SciTech Connect (OSTI)

All around the world, governments, utility companies, and private businesses are attempting to reduce the amount of energy consumed. In the US alone, new economic strategies and programs are being created to facilitate this process. For instance, the recent enactment of the National Energy Policy Act, the Environmental Protection Agency`s (EPA) Green Lights Program, and a surge of utility involvement in Demand Side Management (DSM) Commercial/Industrial Direct Install and Rebate Programs. Many of these problems target commercial/industrial lighting system retrofits as one of the most cost effective avenues for reducing the consumption of energy. Due to this trend, hundreds of millions of lighting ballasts and lamps are being discarded. The benefits of these programs result in enormous reductions in fossil fuels (and subsequent carbon dioxide, sulfur dioxide, and nitrogen oxide emissions) required to generate the displaced electricity. Throughout the US, however, there is an increasing concern for the environmental impacts surrounding the accelerated disposal of both lighting ballasts and lamps. Regulations initially established were for a one by one, retirement (failure) process rather than promoted obsolescence and forced retirement of lamp groups or entire systems (truckloads of old technologies). Recognizing this trend and the potential negative environmental effects, federal, state, and local regulators are reevaluating the impacts and are being asked to promulgate policies to specifically address this situation.

Leishman, D.L. [Alta Resource Management Services, Inc., Springfield, MA (United States)

1996-12-01T23:59:59.000Z

80

L-Prize Competition Winner 60W Incandescent Replacement Lamp Update  

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

Interagency Technology Deployment Working Group L Prize ® Competition Winner 60W Incandescent Replacement Lamp Update James E. Rannels, Senior Advisor L Prize Competition D&R International March 15, 2012 Cost of electricity 1 cent per kilowatt-hour The Washington Post, March 8, 2012 Page One 2 Cost of electricity 11 cents per kilowatt-hour The Washington Post, March 9, 2012 Page Two 3 What Is the L Prize? * Technology competition to spur innovation and exceptional performance * Created by Energy Independence and Security Act (EISA 2007) Sec. 655 * Two key lamp replacements: 60W Incandescent and PAR 38 Halogen * Future focus: 21 st Century Lamp * Cash prizes, federal purchasing, utility programs 4 Philips Wins First L Prize * August 3, 2011: Philips

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


81

L-Prize Competition Winner 60W Incandescent Replacement Lamp Update  

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

Interagency Technology Deployment Working Group L Prize ® Competition Winner 60W Incandescent Replacement Lamp Update James E. Rannels, Senior Advisor L Prize Competition D&R International March 15, 2012 Cost of electricity 1 cent per kilowatt-hour The Washington Post, March 8, 2012 Page One 2 Cost of electricity 11 cents per kilowatt-hour The Washington Post, March 9, 2012 Page Two 3 What Is the L Prize? * Technology competition to spur innovation and exceptional performance * Created by Energy Independence and Security Act (EISA 2007) Sec. 655 * Two key lamp replacements: 60W Incandescent and PAR 38 Halogen * Future focus: 21 st Century Lamp * Cash prizes, federal purchasing, utility programs 4 Philips Wins First L Prize * August 3, 2011: Philips

82

RF driven sulfur lamp having driving electrodes arranged to cool the lamp  

DOE Patents [OSTI]

A high intensity discharge lamp without mercury is disclosed radiating a selected spectrum of which can be almost entirely in the visible range from an envelope that contains a sulfur containing substance. The lamp utilizes a signal source that generates an excitation signal that is externally coupled to the exterior surface of the envelope to excite the enclosed sulfur containing substance. Various embodiments of the lamp use electrodes adjacent the envelope to couple the excitation signal thereto with the face of the electrodes shaped to complement the shape of the exterior surface of the envelope. Two shapes discussed are spherical and cylindrical. To minimize filamentary discharges each envelope may include an elongated stem affixed to the exterior thereof whereby a rotational subsystem spins the envelope. In yet another embodiment the envelope has a Dewar configuration with two electrodes, one positioned near the external curved side surface of the body, and a second to the inner surface of the hole through the envelope. Further, the envelope may contain a backfill of a selected inert gas to assist in the excitation of lamp with that backfill at a pressure of less than 1 atmosphere, wherein the backfill pressure is directly related to the increase or decrease of peak output and inversely related to the increase and decrease of the emitted spectrum from the envelope. The emitting fill can be less than 6 mg/cc, or at least 2 mg/cc of the envelope of a sulfur containing substance. 17 figs.

Gabor, G.; Orr, T.R.; Greene, C.M.; Crawford, D.G.; Berman, S.M.

1998-10-20T23:59:59.000Z

83

Max Tech and Beyond: High-Intensity Discharge Lamps  

E-Print Network [OSTI]

of color compared with the incandescent reference source isin this report. Standard Incandescent Halogen Low-Pressure:value equivalent to an incandescent filament lamp. Taking

Scholand, Michael

2012-01-01T23:59:59.000Z

84

Lamp for generating high power ultraviolet radiation  

DOE Patents [OSTI]

The apparatus is a gas filled ultraviolet generating lamp for use as a liquid purifier. The lamp is powred by high voltage AC, but has no metallic electrodes within or in contact with the gas enclosure which is constructed as two concentric quartz cylinders sealed together at their ends with the gas fill between the cylinders. Cooling liquid is pumped through the volume inside the inner quartz cylinder where an electrically conductive pipe spaced from the inner cylinder is used to supply the cooling liquid and act as the high voltage electrode. The gas enclosure is enclosed within but spaced from a metal housing which is connected to operate as the ground electrode of the circuit and through which the treated fluid flows. Thus, the electrical circuit is from the central pipe, and through the cooling liquid, the gas enclosure, the treated liquid on the outside of the outer quartz cylinder, and to the housing. The high voltage electrode is electrically isolated from the source of cooling liquid by a length of insulated hose which also supplies the cooling liquid.

Morgan, Gary L. (Elkridge, MD); Potter, James M. (Los Alamos, NM)

2001-01-01T23:59:59.000Z

85

15 KJ FLASH LAMP, POWER CONDITIONING UNIT DESIGNED FOR SAFTY, RELIABILITY & MANUFACTURABILITY*  

SciTech Connect (OSTI)

A 15kJoule, Flash Lamp Power Conditioning Unit has been successfully designed, developed, and deployed in the National Ignition Facility (NIF) Preamplifier Modules (PAM). The primary design philosophy of this power conditioning unit (PCU) is safety, reliability, and manufacturability. Cost reduction over commercially equivalent systems was also achieved through an easily manufactured packaging design optimized to meet NIF requirements. While still maintaining low cost, the PCU design includes a robust control system, fault diagnostic system, and safety features. The pulsed power design includes 6 PFN modules, each including a dual series injection trigger transformer, that drive a total of 12 flash lamp loads. The lamps are individually triggered via a 20kV pulse produced by a 1kV, MCT switched capacitive discharge unit on the primary side of the trigger transformer. The remote control interface includes an embedded controller that captures flash lamp current wave forms and fault status for each shot. The embedded controller provides the flexibility of remotely adjusting both the main drive voltage from 1.6 to 2.5 kV and the trigger voltage from 0 to 20 kV.

James, G; Merritt, B; Dreifuerst, G; Strickland, S

2007-08-07T23:59:59.000Z

86

DEFINING THE EFFECTIVENESS OF UV LAMPS  

Office of Scientific and Technical Information (OSTI)

ARTI-21CR/610-40030-01 ARTI-21CR/610-40030-01 DEFINING THE EFFECTIVENESS OF UV LAMPS INSTALLED IN CIRCULATING AIR DUCTWORK Final Report Date Published - November 2002 Douglas VanOsdell and Karin Foarde RTI P.O. Box 12194 Research Triangle Park, NC 27709-2194 Prepared for the AIR-CONDITIONING AND REFRIGERATION TECHNOLOGY INSTITUTE 4100 N. Fairfax Drive, Suite 200, Arlington, Virginia 22203 Distribution A - Approved for public release; further dissemination unlimited. DISCLAIMER This report was prepared as an account of work sponsored by the Air-Conditioning and Refrigeration Technology Institute (ARTI) under its "HVAC&R Research for the 21 st Century" (21-CR) program. Neither ARTI, the financial supporters of the 21-CR program, or any agency

87

Current:  

Office of Legacy Management (LM)

OWNE3 (55) OWNE3 (55) -------- past: _--_-------------------- Current: Owner contacted I-J yes ,Fqna; ------------_------------- if yes, date contacted TYPE OF OPEF(ATION ---__-------_____ c] Research & Development -4 Facility Type ci Production scale testing 0 Pilbt Scale 0 Bench Scale Process 0 Theoretical Studies 0 Sample & Analysis C Productian E Disposal/Storage TYPE OF CONTRACi _------_-------_ tlanuf acturi ng University Research Organizaticn q Prime --. _' cl Other information (i.e., cost price, + fixed fee, unit time % material, qtr) ------- ~----~---~~------__--------- YuncOntractor Purchase Order Contract/Purkhase Order # cc-km ----_----~~-----___--------- --------------------------------- OWNEKSHIP: AEC/ME3 AEC/MED GOVT GOUT CONTRACTOR CCNTRACTOR

88

Current:  

Office of Legacy Management (LM)

Qwner contacted n yes Qwner contacted n yes Current: ---------------------L---- if yes, date contacted Research & Development cl Facility Type 0 . Productioff 0 Di 3pcsal /Storage TYPE OF CONTRACT ---------------- q Prime q Subcontractor 0 Purchase Order 0 Other information (i.e. q cast + fixed fee, unit piice, time & material, etr) ------- ------_-----_--------------- 0 Production scale testing 0 Pilot Scale 0 Bench Scale Process a Theoretical Studies Sample & Analysis rcc t O' L~1 q Manufacturing 0 University 0 Research Organization 0 Government Sponsored Facility 0 Other ~--~~---_--__-____--- ' Contract/Purchase Order # __-u~-rc,~~--___~~I_IzI__zpI------------ CONTRACTING PE3IOD: lW/ ------------------ _----__--~-~~--~~_-----~~~~~~~~~~~~~~ ClWNERSHIP:

89

Highly Efficient Small Form Factor LED Retrofit Lamp  

SciTech Connect (OSTI)

This report summarizes work to develop a high efficiency LED-based MR16 lamp downlight at OSRAM SYLVANIA under US Department of Energy contract DE-EE0000611. A new multichip LED package, electronic driver, and reflector optic were developed for these lamps. At steady-state, the lamp luminous flux was 409 lumens (lm), luminous efficacy of 87 lumens per watt (LPW), CRI (Ra) of 87, and R9 of 85 at a correlated color temperature (CCT) of 3285K. The LED alone achieved 120 lumens per watt efficacy and 600 lumen flux output at 25 C. The driver had 90% electrical conversion efficiency while maintaining excellent power quality with power factor >0.90 at a power of only 5 watts. Compared to similar existing MR16 lamps using LED sources, these lamps had much higher efficacy and color quality. The objective of this work was to demonstrate a LED-based MR16 retrofit lamp for replacement of 35W halogen MR16 lamps having (1) luminous flux of 500 lumens, (2) luminous efficacy of 100 lumens per watt, (3) beam angle less than 40{sup o} and center beam candlepower of at least 1000 candelas, and (4) excellent color quality.

Steven Allen; Fred Palmer; Ming Li

2011-09-11T23:59:59.000Z

90

Calculation of the Non-Inductive Current Profile in High-Performance NSTX Plasmas  

SciTech Connect (OSTI)

The constituents of the current profile have been computed for a wide range of high-performance plasmas in NSTX [M. Ono, et al., Nuclear Fusion 40, 557 (2000)]; these include cases designed to maximize the non-inductive fraction, pulse length, toroidal-?, or stored energy. In the absence of low-frequency MHD activity, good agreement is found between the reconstructed current profile and that predicted by summing the independently calculated inductive, pressure-driven, and neutral beam currents, without the need to invoke any anomalous beam ion diffusion. Exceptions occur, for instance, when there are toroidal Alfven eigenmode avalanches or coupled m/n=1/1+2/1 kink-tearing modes. In these cases, the addition of a spatially and temporally dependent fast ion diffusivity can reduce the core beam current drive, restoring agreement between the reconstructed profile and the summed constituents, as well as bringing better agreement between the simulated and measured neutron emission rate. An upper bound on the fast ion diffusivity of ~0.5-1 m2/sec is found in MHD-free discharges, based on the neutron emission, time rate of change of the neutron signal when a neutral beam is stepped, and reconstructed on-axis current density.

Gerhardt, S P; Gates, D; Kaye, S; Menard, J; Bell, M G; Bell, R E; Le Blanc, B P; Kugel, H; Sabbagh, S A

2011-02-09T23:59:59.000Z

91

Bibliometric analysis for science policy: An evaluation of the United Kingdom's research performance in ocean currents and protein crystallography  

Science Journals Connector (OSTI)

This paper presents the results of a study of Britain's scientific performance in the fields of ocean currents and protein crystallography carried out for the...

D. Crouch; J. Irvine; B. R. Martin

1986-05-01T23:59:59.000Z

92

FED-A, an advanced performance FED based on low safety factor and current drive  

SciTech Connect (OSTI)

The FED-A study aims to quantify the potential improvement in cost-effectiveness of the Fusion Engineering Device (FED) by assuming low safety factor q (less than 2 as opposed to about 3) at the plasma edge and noninductive current drive (as opposed to only inductive current drive). The FED-A performance objectives are set to be : (1) ignition assuming International Tokamak Reactor (INTOR) plamsa confinement scaling, but still achieving a fusion power amplification Q greater than or equal to 5 when the confinement is degraded by a factor of 2; (2) neutron wall loading of about 1 MW/m/sup 2/, with 0.5 MW/m/sup 2/ as a conservative lower bound; and (3) more clearly power-reactor-like operations, such as steady state.

Peng, Y.K.M.; Rutherford, P.H.

1983-08-01T23:59:59.000Z

93

107-A load-current B-dot monitor: Simulations, design, and performance  

Science Journals Connector (OSTI)

A B-dot monitor that measures the current 6cm from the axis of dynamic loads fielded on 107-A multiterawatt pulsed-power accelerators has been developed. The monitor improves upon the multimegampere load-current gauge described in Phys. Rev. ST Accel. Beams 11, 100401 (2008). The design of the improved monitor was developed using three-dimensional particle-in-cell simulations that model vacuum electron flow in the transmission line near the monitor. The simulations include important geometric features of the B-dot probe and model the deposition of electron energy within the probe. The simulations show that the improved design reduces by as much as a factor of 5 the electron energy deposition to the interior of the monitor. Data taken on accelerator shots demonstrate that the improved monitor works as well as the original monitor on shots with low-impedance loads, and delivers superior performance on higher-impedance-load shots.

D. V. Rose; D. R. Welch; C. L. Miller; R. E. Clark; E. A. Madrid; C. B. Mostrom; T. C. Wagoner; J. K. Moore; W. A. Stygar; J. E. Bailey; T. J. Nash; G. A. Rochau; D. B. Sinars

2010-04-21T23:59:59.000Z

94

Covered Product Category: Compact Fluorescent Lamps | Department of Energy  

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

Covered Product Category: Compact Fluorescent Lamps Covered Product Category: Compact Fluorescent Lamps Covered Product Category: Compact Fluorescent Lamps October 7, 2013 - 10:48am Addthis ENERGY STAR Qualified Products Federal Energy Management Program (FEMP) provides acquisition guidance across a variety of product categories, including compact fluorescent lamps (CFLs), which are an ENERGY STAR-qualified product category. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Most manufacturers display the ENERGY STAR label on complying models. For a model not displaying this label, check the manufacturer's literature to determine if it meets the efficiency requirements outlined by ENERGY STAR.

95

DOE Publishes Long-Term Testing Investigation of Retail Lamps  

Broader source: Energy.gov [DOE]

The U.S. Department of Energy's CALiPER program has released another special report on LED lamps that are available through the retail marketplace and targeted toward general consumers. CALiPER...

96

Conservation Potential of Compact Fluorescent Lamps in India and Brazil  

E-Print Network [OSTI]

38 TWh, 10% of which was for incandescent lighting (Fig. 3).The electricity consumed in incandescent lighting can be300 and 400 million incandescent lamps in the country. Let

Gadgil, A.J.

2008-01-01T23:59:59.000Z

97

Optimized Magnetic Components Improve Efficiency of Compact Fluorescent Lamps  

E-Print Network [OSTI]

xtures (designed for incandescent bulbs) has allowed residential and small commercial electric customers of incandescent lamps and last 10 times longer [1]. High-frequency electronic ballasts are used to power CFLs

98

DOE Publishes New CALiPER Report on Retail Lamps  

Broader source: Energy.gov [DOE]

The U.S. Department of Energy's CALiPER program has released a special report on LED lamps available through the retail marketplace and targeted toward general consumers. While previous reports in...

99

Magnetic fluorescent lamp having reduced ultraviolet self-absorption  

DOE Patents [OSTI]

The radiant emission of a mercury-argon discharge in a fluorescent lamp assembly (10) is enhanced by providing means (30) for establishing a magnetic field with lines of force along the path of electron flow through the bulb (12) of the lamp assembly, to provide Zeeman splitting of the ultraviolet spectral line. Optimum results are obtained when the magnetic field strength causes a Zeeman splitting of approximately 1.7 times the thermal line width.

Berman, Samuel M. (San Francisco, CA); Richardson, Robert W. (Pelham, NY)

1985-01-01T23:59:59.000Z

100

Compact fluorescent lamp using horizontal and vertical insulating septums and convective venting geometry  

DOE Patents [OSTI]

A novel design is described for a compact fluorescent lamp, including a lamp geometry which will increase light output and efficacy of the lamp in a base down operating position by providing horizontal and vertical insulating septums positioned in the ballast compartment of the lamp to provide a cooler coldspot. Selective convective venting provides additional cooling of the ballast compartment. 9 figs.

Siminovitch, M.

1998-02-10T23:59:59.000Z

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


101

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

E-Print Network [OSTI]

standard for linear fluorescent lamps Length (mm) Minimum efficacy (lm/W) Efficacy for energy conservation

Lin, Jiang

2002-01-01T23:59:59.000Z

102

Is the light emitting diode (LED) an ultimate lamp?  

Science Journals Connector (OSTI)

Simple diagrams are used to show the transformation of a thin slab of intrinsic semiconductor (direct gap k elec =k hole ) from an ideal flat-band photopumped recombination-radiation light source into an ultimate lamp a pn junctionlight emitting diode(LED). A photoexcited intrinsic slab of semiconductor can be regarded as an ideal (flat-band) light source with however the photogenerated carriers and voltage available externally instead of as recombination radiation (light) if the slab is converted to half p type (one side) and half n type (the other side) i.e. to a pn junction. If an equal a bucking external voltage is applied resulting in an input current when the photoexcitation is removed the slab becomes again (remains) an ideal flat-band light source a pn junctionLED. In practice the LED takes the form of a pn heterostructure in order to improve electronhole injection reduce the absorption of recombination radiation and to make possiblewith proper geometriesimproved photon escape.

N. Holonyak Jr.

2000-01-01T23:59:59.000Z

103

LED Performance Specification Series: T8 Replacement Lamps  

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

program of SSL research, development, and commercialization. For Program Information: Kelly Gordon Pacific Northwest National Laboratory Phone: (503) 417-7558 E-mail:...

104

Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks Page 1 Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks  

E-Print Network [OSTI]

Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks Page 1 Assessing the Risk of Mercury in Drinking Water after UV Lamp Breaks Heidi Borchers University of New Hampshire, Environmental Ultraviolet (UV) lamps generate ultraviolet light through the vaporization of elemental mercury, by using

105

Covered Product Category: Compact Fluorescent Lamps | Department...  

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

per watt performance. Buyer Tips CFLs installed in enclosed fixtures designed for incandescent bulbs may overheat. This can significantly reduce both light output and lifetime....

106

2014-12-30 Issuance: Energy Conservation Standard for General Service Fluorescent Lamps and Incandescent Reflector Lamps; Final Rule  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register final rule regarding energy conservation standards for general service fluorescent lamps and incandescent reflector lamps, as issued by the Deputy Assistant Secretary for Energy Efficiency on December 30, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

107

Confirmation of the chromosomal localization of human lamp genes and their exclusion as candidate genes for Salla disease  

Science Journals Connector (OSTI)

Salla disease is an inherited lysosomal storage disorder caused by accumulation of free sialic acid in the lysosomes. Lamp genes, lamp A and lamp B (lysosome associated membrane proteins), are the first known ...

Johanna Schleutker; Leena Haataja; Martin Renlund; Lea Puhakka

1991-11-01T23:59:59.000Z

108

Low-pressure microwave plasma ultraviolet lamp for water purification  

Science Journals Connector (OSTI)

Low-pressure mercury lamps are commonly used for germicidal applications. The germicidal effect is due to the emission of light at 254nm, which leads to the destruction of the most waterborne bacteria and viruses. The microwave plasma ultraviolet (UV) lamp (MPUVL) is a new technology for generating a high-intensity UV light and that can be also controlled to operate at 185nm; irradiation is in air at this wavelength produces ozone. The microwave power is injected into a resonant cavity and the surface wave excitation takes place within the cavity through that part of the discharge tube (fused silica) protruding inside it. The MPUVL has many advantages over conventional lamps, which are limited to an output power in the region of 30Wm-1, while MPUVL can deliver any amount of power per unit length and the tube can be of any shape, length or diameter. This paper describes the design of the MPUVL and compares its efficiency with that of conventional lamps through spectral analysis. Other results, which include the effects of temperature and different power inputs, are also discussed.

A I Al-Shamma'a; I Pandithas; J Lucas

2001-01-01T23:59:59.000Z

109

DOE Publishes CALiPER Report on Cost-Effectiveness of Linear (T8) LED Lamps  

Broader source: Energy.gov [DOE]

The U.S. Department of Energy's CALiPER program has released Report 21.3, which is part of a series of investigations on linear LED lamps. Report 21.3 details a set of life-cycle cost simulations that compared a two-lamp troffer using LED lamps (38W total power draw) or fluorescent lamps (51W total power draw) over a 10-year study period.

110

Transport phenomena in metal-halide lamps a poly-diagnostic study  

E-Print Network [OSTI]

/ spectroscopie. Subject headings: gas discharges / metal-halide lamps / plasma diagnostics / plasma properties-halide arc lamps . . . . . . . . . . . 7 1.3 Scope of ThesisTransport phenomena in metal-halide lamps a poly-diagnostic study Tanya Nimalasuriya #12;Copyright

Eindhoven, Technische Universiteit

111

Glass and glass-derivative seals for use in energy-efficient fuel cells and lamps  

SciTech Connect (OSTI)

For solid oxide fuel cells (SOFC), a series of 18 sealing glasses have been prepared and characterized. From the whole design space, several glasses were ''downselected'' and studied in detail to describe their behaviors in simulated fuel cell environments. One of the glasses was found to outperform all others, including the well-known G18 sealant developed at Pacific Northwest National Laboratory. The new glass composition showed lower bulk electrical conductivity, excellent sealing and wetting behavior when sealing under applied load, and qualitatively superior performance when exposed to wet hydrogen for 800 hours. Traditional melting was used to prepare all of the glasses that were studied in detail. The sol-gel approach was used to synthesize several compositions, but it was found that the glasses crystallized very rapidly during heating, precluding sealing. The glass characterization included measurements of the viscosity and thermal expansion of the glasses, as well as the thermal expansion of the partly crystalline glass ceramics. In addition, the wetting and sintering behavior of all glasses has been measured, as well as the crystallization behavior. The time and temperature at which crystalline phases form from the glasses has been determined for all of the glasses. Each glass ceramic contains at least two crystalline phases, and most of the crystalline phases have been positively identified. The body of fundamental data provides a platform for future developments for high temperature sealants, and the newly-developed glass compositions appear promising for large-scale testing. The second component of the work, focused on seals for higher-temperature discharge lighting, has focused on determining the phase relations in the yttria-alumina-silica system at various silica levels. Functional testing of one of the candidate sealants demonstrated that it performs well in current HID lighting applications. Further testing is required to evaluate its performance in next-generation lamps that operate at higher temperatures, but the baseline phase equilibria and crystallization behavior has been established for additional development. Again, traditional melting and sol-gel synthesis have been employed, and the sol-gel method was successful for preparing new phases that were discovered during the work. Four new phases have been identified and synthesized in pure form, from which full structure solutions were obtained as well as the anisotropic thermal expansion for each phase.

Scott Misture; Arun Varshineya; Matthew Hall; Sylvia DeCarr; Steve Bancheri

2005-07-28T23:59:59.000Z

112

DOE Fuel Cell Technologies Office Record 13010: Onboard Type IV Compressed Hydrogen Storage Systems - Current Performance and Cost  

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

DOE Fuel Cell Technologies Office Record Record #: 13010 Date: June 11, 2013 Title: Onboard Type IV Compressed Hydrogen Storage Systems - Current Performance and Cost Originators: Scott McWhorter and Grace Ordaz Approved by: Sunita Satyapal Date: July 17, 2013 Item: This record summarizes the current status of the projected capacities and manufacturing costs of Type IV, 350- and 700-bar compressed hydrogen storage systems, storing 5.6 kg of usable hydrogen, for onboard light-duty automotive applications when manufactured at a volume of 500,000 units per year. The current projected performance and cost of these systems are presented in Table 1 against the DOE Hydrogen Storage System targets. These analyses were performed in support of the Hydrogen Storage

113

Analysis of Na and Ba in an atomic fluorescence method with excitation by a pulsed dye laser with lamp pumping  

SciTech Connect (OSTI)

Among the laser methods used in atomic spectroscopy, atomic fluorescence resonance spectroscopy together with an atomic ionization technique make it possible to work with individual atoms. This paper reports on the determination of Na and Ba in aqueous solutions of their salts with atomic fluorescence analysis performed wih a dye laser and lamp pumping, the pulse of generation having a length of 1-2 usec. The detection limit of elements in atomic fluorescence analysis performed wih dye lasers with lamp pumping can be reduced by increasing the spectral density of the laser radiation through narrowing the line of generation, by employing other dyes to excite lines of greater intensity, by improving the recording system of the fluorescence spectra, and by improving the atomization of the samples to be analyzed.

Kukvshim, V.G.

1986-04-01T23:59:59.000Z

114

DuraLamp USA: Proposed Penalty (2010-CE-0912) | Department of Energy  

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

DuraLamp USA: Proposed Penalty (2010-CE-0912) DuraLamp USA: Proposed Penalty (2010-CE-0912) DuraLamp USA: Proposed Penalty (2010-CE-0912) September 9, 2010 DOE alleged in a Notice of Proposed Civil Penalty that DuraLamp USA, Inc. failed to certify a variety of general service fluorescent lamps as compliant with the applicable energy conservation standards. DOE regulations require a manufacturer (which includes importers) to submit reports certifying that its products have been tested and meet the applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. DuraLamp USA: Proposed Penalty (2010-CE-0912) More Documents & Publications DuraLamp USA: Order (2010-CE-0912)

115

Energy-efficient compact screw-in fluorescent lamp. Final report  

SciTech Connect (OSTI)

A compact fluorescent lamp has been designed and constructed which can replace an incandescent lamp. The lamp is slightly larger than a standard lamp (8 3/4 in. x 3 1/4 in.), but is designed to fit a majority of portable lamp applications. This version, with a core-coil ballast, results in a system efficacy of 54 lumens per watt, with a light output of more than 1800 lumens. This compares favorably with a 100-watt incandescent (17.5 lumens per watt and 1750 lumens light output). The color temperature of 3000/sup 0/K is compatible with an incandescent lamp (2800/sup 0/K). The color rendition index (CRI) is 84. With a solid-state ballast, the efficacy and light output could be increased by 20% (65 l/w, 2200 lumens) and could provide a direct replacement for a three-way, 150-watt incandescent lamp (15 l/w, 2200 lumens).

Morton, E.W.

1982-11-01T23:59:59.000Z

116

Sulfur Lamps-The Next Generation of Efficient Light?  

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

5 5 Sulfur Lamps-The Next Generation of Efficient Light? The figure above is a schematic of the system installed at the National Air and Space Museum and the DOE headquarters in Washington, D.C., Light from the sulfur lamp is focused by a parabolic reflector so that it enters the light pipe within a small angular cone. Light travels down the pipe, reflecting off the prismatic film (A) that lines the outer acrylic tube. The prismatic film reflects the light through total internal reflection (C), an intrinsically efficient process. Some of the light striking the film (at A) is not reflected and "leaks out" of the pipe walls (B), giving the pipe a glowing appearance. A light ray that travels all the way down the pipe will strike the mirror at the end (D) and return back up the pipe.

117

L Prize Competition Winner 60W Incandesent Replacement Lamp Update  

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

Technology Deployment Technology Deployment Working Group L Prize ® Competition Winner 60W Incandescent Replacement Lamp Update James E. Rannels, Senior Advisor L Prize Competition D&R International May 23, 2012 Philips Wins First L Prize 2 * August 3, 2011: Philips announced as winner of 60W replacement bulb category * Product distributed thru commercial and retail channels Image courtesy of Philips -...[O]nce an award is made the authorizing Act directs General Services Administration to develop federal purchasing schedules for solid-state lamps that meet or exceed the specifications laid out in the prize category-so long as it is cost effective. I hope the GSA begins this process soon.‖

118

ISSUANCE 2014-12-29: Energy Conservation Program: Clarification for Energy Conservation Standards and Test Procedures for Fluorescent Lamp Ballasts  

Broader source: Energy.gov [DOE]

Energy Conservation Program: Clarification for Energy Conservation Standards and Test Procedures for Fluorescent Lamp Ballasts

119

Ionization tube simmer current circuit  

DOE Patents [OSTI]

A highly efficient flash lamp simmer current circuit utilizes a fifty percent duty cycle square wave pulse generator to pass a current over a current limiting inductor to a full wave rectifier. The DC output of the rectifier is then passed over a voltage smoothing capacitor through a reverse current blocking diode to a flash lamp tube to sustain ionization in the tube between discharges via a small simmer current. An alternate embodiment of the circuit combines the pulse generator and inductor in the form of an FET off line square wave generator with an impedance limited step up output transformer which is then applied to the full wave rectifier as before to yield a similar simmer current.

Steinkraus, Jr., Robert F. (Livermore, CA)

1994-01-01T23:59:59.000Z

120

Ionization tube simmer current circuit  

DOE Patents [OSTI]

A highly efficient flash lamp simmer current circuit utilizes a fifty percent duty cycle square wave pulse generator to pass a current over a current limiting inductor to a full wave rectifier. The DC output of the rectifier is then passed over a voltage smoothing capacitor through a reverse current blocking diode to a flash lamp tube to sustain ionization in the tube between discharges via a small simmer current. An alternate embodiment of the circuit combines the pulse generator and inductor in the form of an FET off line square wave generator with an impedance limited step up output transformer which is then applied to the full wave rectifier as before to yield a similar simmer current. 6 figures.

Steinkraus, R.F. Jr.

1994-12-13T23:59:59.000Z

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


121

The effect of cerium surface treated ferritic stainless steel current collectors on the performance of solid oxide fuel cells (SOFC)  

Science Journals Connector (OSTI)

Laboratory scale solid oxide fuel cells (button cells) were operated with untreated or cerium surface treated Fe22Cr0.5Mn (composition by weight percent, wt%) ferritic stainless steel current collectors attached to the cathode. After a brief stabilization (or burn-in) period, the power density of a cell with the untreated current collector rapidly decreased. By contrast, there was little degradation in power density during testing of cells with the cerium surface treated current collectors. The difference in degradation was attributed to differences in Cr build-up within the cathode. It should be emphasized that the duration of the tests were quite short and longer duration testing is required, however, this initial assessment indicates the treatment may benefit the performance of SOFC with steel interconnects.

D.E. Alman; C.D. Johnson; W.K. Collins; P.D. Jablonski

2007-01-01T23:59:59.000Z

122

Effect of helium addition on discharge characteristics in a flat fluorescent lamp  

SciTech Connect (OSTI)

The discharge characteristics of a multielectrode dual coplanar in a mercury-free flat fluorescent lamp were investigated using brightness-efficiency measurement and the infrared (IR) spectrum and intensified charge coupled device (ICCD) characteristics. The level of brightness was above 14 900 cd/m{sup 2} under the conditions of neon--50% xenon-8% He gas composition, 150 Torr pressure, and 20 kHz alternating current pulse. The ICCD results revealed a faster and wider discharge with a Ne-50% Xe-8% He gas composition. The effect of adding helium (He) to Ne-50% Xe revealed a faster peak emission, as confirmed by ICCD images. From the gated IR emission spectrum, the intensity ratio of I{sub 823nm}/I{sub 828nm} was {approx}8% higher with Ne-50% Xe-8% He than with Ne-50% Xe under the same pressure and applied voltage conditions.

Lee, Seong-Eui; Lee, Ho-Nyeon; Park, Hyoung-Bin; Lee, Kyo Sung; Choi, Kyung Cheol [Materials and Devices Research Center, Samsung Advanced Institute of Technology, Suwon 440-600 (Korea, Republic of); Department of Electronics Engineering, Sejong University, Seoul 143-747 (Korea, Republic of); Department of Electrical Engineering and Computer Science, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701 (Korea, Republic of)

2005-11-01T23:59:59.000Z

123

Lumen and Chromaticity Maintenance of LED PAR38 Lamps Operated in Steady-State Conditions  

SciTech Connect (OSTI)

The lumen depreciation and color shift of 38 different lamps (32 LED, 2 CFL, 1 ceramic metal halide [CMH], 3 halogen) were monitored in a specially developed automated long-term test apparatus (ALTA2) for nearly 14,000 hours. Five samples of each lamp model were tested, with measurements recorded on a weekly basis. The lamps were operated continuously at a target ambient temperature between 44C and 45C.

Royer, Michael P.

2014-12-01T23:59:59.000Z

124

Text-Alternative Version: CALiPER Series 21 on LED Linear Lamps and Troffer Lighting  

Broader source: Energy.gov [DOE]

Following is a text version of a video about CALiPER Application Report Series 21 on LED Linear Lamps and Troffer Lighting.

125

DOE Publishes Special CALiPER Report on Retail Lamps | Department...  

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

retail marketplace and targeted toward general consumers. The report follows similar reports published in 2011 and 2012. LED replacement lamps are available through many retail...

126

LED Linear Lamps and Troffer Lighting: CALiPER Report Series 21  

SciTech Connect (OSTI)

Video about CALiPER Report Series 21 on LED Linear Lamps and Troffer Lighting, featuring interviews with Tracy Beeson and Naomi Miller of Pacific Northwest National Laboratory.

Beeson, Tracy; Miller, Naomi

2014-06-17T23:59:59.000Z

127

EA-1911: Energy Conservation Standards for Certain Reflector, Elliptical Reflector, and Bulged Reflector Incandescent Lamps  

Broader source: Energy.gov [DOE]

This EA will evaluate the environmental impacts of a proposal to amend energy conservation standards for Certain Reflector, Elliptical Reflector, and Bulged Reflector Incandescent Lamps.

128

J.-A. FLEMING. 2014 On the characteristic curves and surfaces of incandescence lamps (Courbes caractristiques des lampes incandescence) ; Phil. Mag.,  

E-Print Network [OSTI]

80 J.-A. FLEMING. 2014 On the characteristic curves and surfaces of incandescence lamps (Courbes caractéristiques des lampes à incandescence) ; Phil. Mag., 5e série, t. XIX, p. 368; I885. L'auteur étudie les résistance correspondant à la force électromotrice vo à laquelle l'incandescence commence à se produire, et r

Paris-Sud XI, Université de

129

Spatial and time-dependent distribution of plasma parameters in the metal-halide arc lamp.  

E-Print Network [OSTI]

Spatial and time-dependent distribution of plasma parameters in the metal-halide arc lamp. A. Khakhaev, L. Luizova, K. Ekimov and A. Soloviev Petrozavodsk State University, Russia The metal-halide arc lamp is an effective light source and its investigation has a long history, but even at present some

Paris-Sud XI, Université de

130

Demonstration Of A Monitoring Lamp To Visualize The Energy Consumption In Houses  

E-Print Network [OSTI]

Demonstration Of A Monitoring Lamp To Visualize The Energy Consumption In Houses Christophe Gisler1://www.unipg.it Abstract. We report on the development of a wireless lamp dedicated to the feedback of energy consumption is a good solution to make people gain awareness of their energy consumption and hence reduce it [1

Paris-Sud XI, Université de

131

Spectral irradiance model for tungsten halogen lamps in 340-850 nm wavelength range  

SciTech Connect (OSTI)

We have developed a physical model for the spectral irradiance of 1 kW tungsten halogen incandescent lamps for the wavelength range 340-850 nm. The model consists of the Planck's radiation law, published values for the emissivity of tungsten, and a residual spectral correction function taking into account unknown factors of the lamp. The correction function was determined by measuring the spectra of a 1000 W, quartz-halogen, tungsten coiled filament (FEL) lamp at different temperatures. The new model was tested with lamps of types FEL and 1000 W, 120 V quartz halogen (DXW). Comparisons with measurements of two national standards laboratories indicate that the model can account for the spectral irradiance values of lamps with an agreement better than 1% throughout the spectral region studied. We further demonstrate that the spectral irradiance of a lamp can be predicted with an expanded uncertainty of 2.6% if the color temperature and illuminance values for the lamp are known with expanded uncertainties of 20 K and 2%, respectively. In addition, it is suggested that the spectral irradiance may be derived from resistance measurements of the filament with lamp on and off.

Ojanen, Maija; Kaerhae, Petri; Ikonen, Erkki

2010-02-10T23:59:59.000Z

132

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

DOE Patents [OSTI]

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.

Siminovitch, Michael J. (Pinole, CA); Page, Erik R. (Berkeley, CA)

2002-01-01T23:59:59.000Z

133

The evolving price of household LED lamps: Recent trends and historical comparisons for the US market  

SciTech Connect (OSTI)

In recent years, household LED light bulbs (LED A lamps) have undergone a dramatic price decline. Since late 2011, we have been collecting data, on a weekly basis, for retail offerings of LED A lamps on the Internet. The resulting data set allows us to track the recent price decline in detail. LED A lamp prices declined roughly exponentially with time in 2011-2014, with decline rates of 28percent to 44percent per year depending on lumen output, and with higher-lumen lamps exhibiting more rapid price declines. By combining the Internet price data with publicly available lamp shipments indices for the US market, it is also possible to correlate LED A lamp prices against cumulative production, yielding an experience curve for LED A lamps. In 2012-2013, LED A lamp prices declined by 20-25percent for each doubling in cumulative shipments. Similar analysis of historical data for other lighting technologies reveals that LED prices have fallen significantly more rapidly with cumulative production than did their technological predecessors, which exhibited a historical decline of 14-15percent per doubling of production.

Gerke, Brian F.; Ngo, Allison T.; Alstone, Andrea L.; Fisseha, Kibret S.

2014-10-14T23:59:59.000Z

134

EM Current Project Performance  

Broader source: Energy.gov [DOE]

In the spirit of promoting transparency with stakeholders and the public, the Office of EnvironmentalManagement (EM) posts key project management information on its website. This document provides...

135

Epidemiologic study of Holstein dairy cow performance and reproduction near a high-voltage direct - current powerline  

SciTech Connect (OSTI)

The development and operation of a high-voltage direct-current (HVDC) transmission line in rural Minnesota generated public concern over potential adverse effects to nearby residents and their livestock. Electrical parameters near an HVDC line decline rapidly with distance, but effects on ambient space charge have been detected out to 1 mile. To identify potential adverse effects of HVDC line operation on livestock, case-control and cohort study methods were used to examine various indices of Holstein performance in relation to distance from the line and the onset of line operation. It was believed that these indices would reflect changes in physiologic function or overt health effects that might arise from the HVDC environment. High-quality performance data from existing Dairy Herd Improvement Association (DHIA) records were obtained for 97% of qualifying herds located within 10 miles of the line. The large number of animals and years of observation provided high statistical power to detect even small systematic changes in performance. No significant differences in milk production or reproductive capacity were associated with presumed exposure to the HVDC environment. The absence of measurable effects in a large sentinel animal population may have implications for the assessment of human health risks related to HVDC transmission lines.

Martin, F.B.; Bender, A.; Steuernagel, G.; Robinson, R.A.; Revsbech, R.; Sorensen, D.K.; Williamson, N.; Williams, A.

1986-01-01T23:59:59.000Z

136

A numerical study of the supply mode effects on high-pressure mercury discharge lamp dynamic thermal behavior  

SciTech Connect (OSTI)

This paper presents a numerical study of the dynamic behavior of high-pressure mercury discharge lamp as a function of supply mode. Bidimensional time-dependent equations have been solved by using a semi-implicit finite-element code. The model has been developed in the frame of the local thermodynamic equilibrium hypothesis. After validation by using experimental data from the literature, this model was applied to analyze the effects of some key parameters such as frequency for an ac arc current and the ratio cycle parameter for square arc-current wave form on the convective process. The results obtained have been used to analyze the dynamic thermal behavior of high-pressure mercury plasma (pressure equal to 0.3 MPa) working under currents widely different in frequency and wave form.

Kaziz, S.; Ahmed, R. Ben; Araoud, Z.; Gazzah, M.H.; Charrada, K.; Said, R. [EMIR, IPEIM, route de Skanes, 5019 Monastir (Tunisia); FSM, avenue de l'environnement, 5019 Monastir (Tunisia); EMIR, IPEIM, route de Skanes, 5019 Monastir (Tunisia)

2005-06-15T23:59:59.000Z

137

190 IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 30, NO. 1, FEBRUARY 2002 Gap Closure in a Cold Metal Halide Lamp  

E-Print Network [OSTI]

lamp has been investigated using a two-dimensional, plasma transport model. Im- ages are presented- charge devices, lighting, plasma applications. METAL halide high-intensity-discharge (HID) lamps op- erate as high-pressure thermal arcs [1]. The cold fills of HID lamps are typically 50­100 torr of a rare

Kushner, Mark

138

Lamp system with conditioned water coolant and diffuse reflector of polytetrafluorethylene(PTFE)  

DOE Patents [OSTI]

A lamp system with a very soft high-intensity output is provided over a large area by water cooling a long-arc lamp inside a diffuse reflector of polytetrafluorethylene (PTFE) and titanium dioxide (TiO.sub.2) white pigment. The water is kept clean and pure by a one micron particulate filter and an activated charcoal/ultraviolet irradiation system that circulates and de-ionizes and biologically sterilizes the coolant water at all times, even when the long-arc lamp is off.

Zapata, Luis E. (Livermore, CA); Hackel, Lloyd (Livermore, CA)

1999-01-01T23:59:59.000Z

139

Iterative Boltzmann plot method for temperature and pressure determination in a xenon high pressure discharge lamp  

SciTech Connect (OSTI)

The Boltzmann plot method allows to calculate plasma temperatures and pressures if absolutely calibrated emission coefficients of spectral lines are available. However, xenon arcs are not very well suited to be analyzed this way, as there are only a limited number of lines with atomic data available. These lines have high excitation energies in a small interval between 9.8 and 11.5 eV. Uncertainties in the experimental method and in the atomic data further limit the accuracy of the evaluation procedure. This may result in implausible values of temperature and pressure with inadmissible uncertainty. To omit these shortcomings, an iterative scheme is proposed that is making use of additional information about the xenon fill pressure. This method is proved to be robust against noisy data and significantly reduces the uncertainties. Intentionally distorted synthetic data are used to illustrate the performance of the method, and measurements performed on a laboratory xenon high pressure discharge lamp are analyzed resulting in reasonable temperatures and pressures with significantly reduced uncertainties.

Zalach, J.; Franke, St. [INP Greifswald, Felix-Hausdorff-Str. 2, 17489 Greifswald (Germany)

2013-01-28T23:59:59.000Z

140

Integrated starting and running amalgam assembly for an electrodeless fluorescent lamp  

DOE Patents [OSTI]

An integrated starting and running amalgam assembly for an electrodeless SEF fluorescent lamp includes a wire mesh amalgam support constructed to jointly optimize positions of a starting amalgam and a running amalgam in the lamp, thereby optimizing mercury vapor pressure in the lamp during both starting and steady-state operation in order to rapidly achieve and maintain high light output. The wire mesh amalgam support is constructed to support the starting amalgam toward one end thereof and the running amalgam toward the other end thereof, and the wire mesh is rolled for friction-fitting within the exhaust tube of the lamp. The positions of the starting and running amalgams on the wire mesh are jointly optimized such that high light output is achieved quickly and maintained, while avoiding any significant reduction in light output between starting and running operation.

Borowiec, Joseph Christopher (Schenectady, NY); Cocoma, John Paul (Clifton Park, NY); Roberts, Victor David (Burnt Hills, NY)

1998-01-01T23:59:59.000Z

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


141

LED Linear Lamps and Troffer Lighting: CALiPER Report Series 21  

Broader source: Energy.gov [DOE]

View the video about CALiPER Report Series 21 on LED Linear Lamps and Troffer Lighting, featuring interviews with Tracy Beeson and Naomi Miller of Pacific Northwest National Laboratory.

142

DOE Publishes CALiPER Report on Lumen and Chromaticity Maintenance of LED PAR38 Lamps  

Broader source: Energy.gov [DOE]

The U.S. Department of Energy's CALiPER program has released Report 20.4, which is part of a series of investigations on LED PAR38 lamps. Report 20.4 focuses on lumen maintenance, chromaticity...

143

DOE Publishes New CALiPER Report on Subjective Evaluation of LED PAR38 Lamps  

Broader source: Energy.gov [DOE]

DOE has published the first in a series of four special investigations intended to extend the findings of CALiPER Application Summary Report 20: LED PAR38 Lamps, which was published late last year.

144

MISSION CATHODIQUE A L'INTRIEUR DES LAMPES A INCANDESCENCE ; par M. L. HOULLEVIGUE (1).  

E-Print Network [OSTI]

523 ?MISSION CATHODIQUE A L'INT?RIEUR DES LAMPES A INCANDESCENCE ; par M. L. HOULLEVIGUE (1). I. Lorsqu'on survolte fortement une lampe à incandescence à filament de charbon, par exemple en mettant sous incandescent. ' , Fic.. 1. Tous ces effets peuvent être attribués, en première analyse, aux électrons émanés du

Boyer, Edmond

145

ISSUANCE 2015-01-26: Energy Conservation Program: Energy Conservation Standards for High-Intensity Lamps, Notice to Reopen Comment Period  

Broader source: Energy.gov [DOE]

Energy Conservation Program: Energy Conservation Standards for High-Intensity Lamps, Notice to Reopen Comment Period

146

Demonstration of LED Retrofit Lamps at the Jordan Schnitzer Museum of Art  

SciTech Connect (OSTI)

The Jordan Schnitzer Museum of Art in Eugene, Oregon, houses a remarkable permanent collection of Asian art and antiquities, modern art, and sculpture, and also hosts traveling exhibitions. In the winter and spring of 2011, a series of digital photographs by artist Chris Jordan, titled "Running the Numbers," was exhibited in the Coeta and Donald Barker Special Exhibitions Gallery. These works graphically illustrate waste (energy, money, health, consumer objects, etc.) in contemporary culture. The Bonneville Power Administration and the Eugene Water and Electricity Board provided a set of Cree 12W light-emitting diode (LED) PAR38 replacement lamps (Cree LRP38) for the museum to test for accent lighting in lieu of their standard Sylvania 90W PAR38 130V Narrow Flood lamps (which draw 78.9W at 120V). At the same time, the museum tested LED replacement lamps from three other manufacturers, and chose the Cree lamp as the most versatile and most appropriate color product for this exhibit. The lamps were installed for the opening of the show in January 2011. This report describes the process for the demonstration, the energy and economic results, and results of a survey of the museum staff and gallery visitors on four similar clusters of art lighted separately by four PAR38 lamps.

Miller, Naomi J.

2011-09-01T23:59:59.000Z

147

Results from the Carbon-Land Model Intercomparison Project (C-LAMP) and Availability of the Data on the Earth System Grid (ESG)  

SciTech Connect (OSTI)

This paper describes the Carbon-Land Model Intercomparison Project (C-LAMP) being carried out through a collaboration between the Community Climate System Model (CCSM) Biogeochemistry Working Group, a DOE SciDAC-2 project, and the DOE Program for Climate Model Diagnosis and Intercomparison (PCMDI). The goal of the project is to intercompare terrestrial biogeochemistry models running within the CCSM framework to determine the best set of processes to include in future versions of CCSM. As a part of the project, observational datasets are being collected and used to score the scientific performance of these models following a well-defined set of metrics. In addition, metadata standards for terrestrial biosphere models are being developed to support archival and distribution of the C-LAMP model output via the Earth System Grid (ESG). Progress toward completion of this project and preliminary results from the first set of experiments are reported.

Hoffman, Forrest M [ORNL; Covey, Curtis [Lawrence Livermore National Laboratory (LLNL); Fung, Inez [University of California, Berkeley; Randerson, Jim [University of California, Irvine; Thornton, Peter [National Center for Atmospheric Research (NCAR); Lee, Jeff [National Center for Atmospheric Research (NCAR); Rosenbloom, Nan [National Center for Atmospheric Research (NCAR); Stockli, Reto [Colorado State University, Fort Collins; Running, Steven [University of Montana, Missoula; Bernholdt, David E [ORNL; Williams, Dean [Lawrence Livermore National Laboratory (LLNL)

2007-01-01T23:59:59.000Z

148

Series Resonant Inverter with Contactless Transformers for Multiple LED Lamps.  

E-Print Network [OSTI]

??A half-bridge series-resonant inverter adopted to realize the quasi current source and the constant current source with a number of contactless transformers in series for (more)

Cheng, Shuen-Wen

2013-01-01T23:59:59.000Z

149

Energy-Efficient, High-Color-Rendering LED Lamps Using Oxyfluoride and Fluoride Phosphors  

SciTech Connect (OSTI)

LED lamps using phosphor downconversion can be designed to replace incandescent or halogen sources with a 'warm-white' correlated color temperature (CCT) of 2700-3200 K and a color rendering index (CRI) greater than 90. However, these lamps have efficacies of {approx}70% of standard 'cool-white' LED packages (CCT = 4500-6000 K; CRI = 75-80). In this report, we describe structural and luminescence properties of fluoride and oxyfluoride phosphors, specifically a (Sr,Ca){sub 3}(Al,Si)O{sub 4}(F,O):Ce{sup 3+} yellow-green phosphor and a K{sub 2}TiF{sub 6}:Mn{sup 4+} red phosphor, that can reduce this gap and therefore meet the spectral and efficiency requirements for high-efficacy LED lighting. LED lamps with a warm-white color temperature (3088 K), high CRI (90), and an efficacy of {approx}82 lm/W are demonstrated using these phosphors. This efficacy is {approx}85% of comparable cool-white lamps using typical Y{sub 3}Al{sub 5}O{sub 12}:Ce{sup 3+}-based phosphors, significantly reducing the efficacy gap between warm-white and cool-white LED lamps that use phosphor downconversion.

Setlur, A.; Radkov, E; Henderson, C; Her, J; Srivastava, A; Karkada, N; Kishore, M; Kumar, N; Aesram, D; et al.

2010-01-01T23:59:59.000Z

150

DOE Publishes Notice of Public Meeting and Availability of the Framework Document for General Service Lamps Energy Conservation Standards  

Broader source: Energy.gov [DOE]

The Department of Energy has published a Federal Register notice of public meeting and availability of the framework document regarding energy conservation standards for general service lamps.

151

Photo-Polarography with a Flash-Lamp  

Science Journals Connector (OSTI)

... PHOTO-POLAROGRAPHY, originating from the synthesis of ... -POLAROGRAPHY, originating from the synthesis of photo-chemistry and polarography, records photokinetic-currents caused by ...

H. BERG; H. SCHWEISS

1961-09-23T23:59:59.000Z

152

Observed Minimum Illuminance Threshold for Night Market Vendors in Kenya who use LED Lamps  

SciTech Connect (OSTI)

Creation of light for work, socializing, and general illumination is a fundamental application of technology around the world. For those who lack access to electricity, an emerging and diverse range of LED based lighting products hold promise for replacing and/or augmenting their current fuel-based lighting sources that are costly and dirty. Along with analysis of environmental factors, economic models for total cost-ofownership of LED lighting products are an important tool for studying the impacts of these products as they emerge in markets of developing countries. One important metric in those models is the minimum illuminance demanded by end-users for a given task before recharging the lamp or replacing batteries. It impacts the lighting service cost per unit time if charging is done with purchased electricity, batteries, or charging services. The concept is illustrated in figure 1: LED lighting products are generally brightest immediately after the battery is charged or replaced and the illuminance degrades as the battery is discharged. When a minimum threshold level of illuminance is reached, the operational time for the battery charge cycle is over. The cost to recharge depends on the method utilized; these include charging at a shop at a fixed price per charge, charging on personal grid connections, using solar chargers, and purchasing dry cell batteries. This Research Note reports on the observed"charge-triggering" illuminance level threshold for night market vendors who use LED lighting products to provide general and task oriented illumination. All the study participants charged with AC power, either at a fixed-price charge shop or with electricity at their home.

Johnstone, Peter; Jacobson, Arne; Mills, Evan; Radecsky, Kristen

2009-03-21T23:59:59.000Z

153

Improved photovoltaic performance of InGaN/GaN solar cells with optimized transparent current spreading layers  

Science Journals Connector (OSTI)

In0.135Ga0.865N/GaN pin solar cells are fabricated and investigated with three types of transparent current spreading layers (TCSLs): Ni/Au layer type (Ni/Au-L), Ni/Au grid type (Ni/Au-G), and ITO layer type (I...

X. M. Cai; Y. Wang; Z. D. Li; X. Q. Lv; J. Y. Zhang; L. Y. Ying

2013-05-01T23:59:59.000Z

154

Pump-lamp firing-pulse generator for solid-state lasers  

SciTech Connect (OSTI)

This paper describes a generator that provides, with maximum output-pulse amplitude, sequential or external firing of four INP16/250 (IFP-8000) lamps at a frequency of 1 Hz. The energy and time characteristics of the generator are improved as compared with similar devices, which provides a time instability of the delay between a generator-trigger pulse and the optical pumping pulse of + or - 1 usec. The output-pulse amplitude can be varied according to the type and number of lamps fired. Measures are taken to reduce the supply noise produced in firing-pulse generation and to increase the operating safety of the device.

Denishchik, Y.S.

1985-12-01T23:59:59.000Z

155

The Fuzzy Design of the Intelligent System for the Energy-Saving Lamps  

Science Journals Connector (OSTI)

In the paper, a intelligent system was proposed. It consists of variable converter and intelligent controller. Variable reactor which concludes variable reactance converter and power converter has wide applications in the soft starting, speed controlling ... Keywords: fuzzy control, variable reactor, intelligent control, power converter, Energy-Saving Lamps

Youxin Yuan; Kaihua Cui; Yiping Xiao; Tieliang Xu

2008-12-01T23:59:59.000Z

156

RF driven sulfur lamp having driving electrodes which face each other  

DOE Patents [OSTI]

A high intensity discharge lamp without mercury is disclosed radiating a selected spectrum of which can be almost entirely in the visible range from an envelope that contains a sulfur containing substance. The lamp utilizes a signal source that generates an excitation signal that is externally coupled to the exterior surface of the envelope to excite the enclosed sulfur containing substance. Various embodiments of the lamp use electrodes adjacent the envelope to couple the excitation signal thereto with the face of the electrodes shaped to complement the shape of the exterior surface of the envelope. Two shapes discussed are spherical and cylindrical. To minimize filamentary discharges each envelope may include an elongated stem affixed to the exterior thereof whereby a rotational subsystem spins the envelope. In yet another embodiment the envelope has a Dewar configuration with two electrodes, one positioned near the external curved side surface of the body, and a second to the inner surface of the hole through the envelope. Further, the envelope may contain a backfill of a selected inert gas to assist in the excitation of lamp with that backfill at a pressure of less than 1 atmosphere, wherein the backfill pressure is directly related to the increase or decrease of peak output and inversely related to the increase and decrease of the emitted spectrum from the envelope. The emitting fill can be less than 6 mg/cc, or at least 2 mg/cc of the envelope of a sulfur containing substance. 17 figs.

Gabor, G.; Orr, T.R.; Greene, C.M.; Crawford, D.G.; Berman, S.M.

1999-06-22T23:59:59.000Z

157

Laboratory for Advanced Materials Processing University of Maryland http://www.enma.umd.edu/LAMP  

E-Print Network [OSTI]

) = Rs x (L / W), with Rs: sheet resistance of a layer of this material The sheet resistance is expressedLaboratory for Advanced Materials Processing � University of Maryland http Operating Procedure for LAMP four point probe sheet resistance measurements Overview of 4 point probe

Rubloff, Gary W.

158

Report 20.3: Stress Testing of LED PAR38 Lamps  

Broader source: Energy.gov [DOE]

A small sample of each of the Application Summary Report 20 PAR38 lamp types underwent stress testing that included substantial temperature and humidity changes, electrical variation, and vibration. The results do not directly address expected lifetime, but can be compared with one another, as well as with benchmark conventional products, to assess the relative robustness of the product designs. (24 pages, December 2014)

159

Method and apparatus for powering an electrodeless lamp with reduced radio frequency interference  

DOE Patents [OSTI]

An electrodeless lamp waveguide structure includes tuned absorbers for spurious RF signals. A lamp waveguide with an integral frequency selective attenuation includes resonant absorbers positioned within the waveguide to absorb spurious out-of-band RF energy. The absorbers have a negligible effect on energy at the selected frequency used to excite plasma in the lamp. In a first embodiment, one or more thin slabs of lossy magnetic material are affixed to the sidewalls of the waveguide at approximately one quarter wavelength of the spurious signal from an end wall of the waveguide. The positioning of the lossy material optimizes absorption of power from the spurious signal. In a second embodiment, one or more thin slabs of lossy magnetic material are used in conjunction with band rejection waveguide filter elements. In a third embodiment, one or more microstrip filter elements are tuned to the frequency of the spurious signal and positioned within the waveguide to couple and absorb the spurious signal's energy. All three embodiments absorb negligible energy at the selected frequency and so do not significantly diminish the energy efficiency of the lamp.

Simpson, James E. (Gaithersburg, MD)

1999-01-01T23:59:59.000Z

160

Method and apparatus for powering an electrodeless lamp with reduced radio frequency interference  

DOE Patents [OSTI]

An electrodeless lamp waveguide structure includes tuned absorbers for spurious RF signals. A lamp waveguide with an integral frequency selective attenuation includes resonant absorbers positioned within the waveguide to absorb spurious out-of-band RF energy. The absorbers have a negligible effect on energy at the selected frequency used to excite plasma in the lamp. In a first embodiment, one or more thin slabs of lossy magnetic material are affixed to the sidewalls of the waveguide at approximately one quarter wavelength of the spurious signal from an end wall of the waveguide. The positioning of the lossy material optimizes absorption of power from the spurious signal. In a second embodiment, one or more thin slabs of lossy magnetic material are used in conjunction with band rejection waveguide filter elements. In a third embodiment, one or more microstrip filter elements are tuned to the frequency of the spurious signal and positioned within the waveguide to couple and absorb the spurious signal's energy. All three embodiments absorb negligible energy at the selected frequency and so do not significantly diminish the energy efficiency of the lamp. 18 figs.

Simpson, J.E.

1999-06-08T23:59:59.000Z

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


161

Issues, Models and Solutions for Triac Modulated Phase Dimming of LED Lamps  

E-Print Network [OSTI]

greater than incandescent lamps [1,2]. In fact, recent technological breakthroughs [3-7] in the high of LED lighting: An incandescent source produces 10 ­ 20 lumens/watt, while several manufacturers have? Incandescent bulbs primarily utilize phase modulating dimming through triac switches to control the power sent

Lehman, Brad

162

Hands On Science with NOAA TITLE: Plate Tectonics and Lava Lamps  

E-Print Network [OSTI]

and geological events?" Answer = heat from radioactive decay · Compare the light bulb in lava to Earth's internal in the lava lamp. · Plot recent earthquakes and volcanic activity on a world map and compare to the location.education.noaa.gov/Ocean_and_Coasts/Ocean_Floor_Features.html USGS Earthquake Hazards - http

163

The Carbon-Land Model Intercomparison Project (C-LAMP): A Model-Data Comparison System for Evaluation of Coupled Biosphere-Atmosphere Models  

SciTech Connect (OSTI)

The need to capture important climate feebacks in general circulation models (GCMs) has resulted in new efforts to include atmospheric chemistry and land and ocean biogeochemistry into the next generation of production climate models, now often referred to as Earth System Models (ESMs). While many terrestrial and ocean carbon models have been coupled to GCMs, recent work has shown that such models can yield a wide range of results, suggesting that a more rigorous set of offline and partially coupled experiments, along with detailed analyses of processes and comparisons with measurements, are warranted. The Carbon-Land Model Intercomparison Project (C-LAMP) provides a simulation protocol and model performance metrics based upon comparisons against best-available satellite- and ground-based measurements (Hoffman et al., 2007). C-LAMP provides feedback to the modeling community regarding model improvements and to the measurement community by suggesting new observational campaigns. C-LAMP Experiment 1 consists of a set of uncoupled simulations of terrestrial carbon models specifically designed to examine the ability of the models to reproduce surface carbon and energy fluxes at multiple sites and to exhibit the influence of climate variability, prescribed atmospheric carbon dioxide (CO{sub 2}), nitrogen (N) deposition, and land cover change on projections of terrestrial carbon fluxes during the 20th century. Experiment 2 consists of partially coupled simulations of the terrestrial carbon model with an active atmosphere model exchanging energy and moisture fluxes. In all experiments, atmospheric CO{sub 2} follows the prescribed historical trajectory from C{sup 4}MIP. In Experiment 2, the atmosphere model is forced with prescribed sea surface temperatures (SSTs) and corresponding sea ice concentrations from the Hadley Centre; prescribed CO{sub 2} is radiatively active; and land, fossil fuel, and ocean CO{sub 2} fluxes are advected by the model. Both sets of experiments have been performed using two different terrestrial biogeochemistry modules coupled to the Community Land Model version 3 (CLM3) in the Community Climate System Model version 3 (CCSM3): The CASA model of Fung, et al., and the carbon-nitrogen (CN) model of Thornton. Comparisons against Ameriflus site measurements, MODIS satellite observations, NOAA flask records, TRANSCOM inversions, and Free Air CO{sub 2} Enrichment (FACE) site measurements, and other datasets have been performed and are described in Randerson et al. (2009). The C-LAMP diagnostics package was used to validate improvements to CASA and CN for use in the next generation model, CLM4. It is hoped that this effort will serve as a prototype for an international carbon-cycle model benchmarking activity for models being used for the Inter-governmental Panel on Climate Change (IPCC) Fifth Assessment Report. More information about C-LAMP, the experimental protocol, performance metrics, output standards, and model-data comparisons from the CLM3-CASA and CLM3-CN models are available at http://www.climatemodeling.org/c-lamp.

Hoffman, Forrest M [ORNL; Randerson, Jim [University of California, Irvine; Thornton, Peter E [ORNL; Mahowald, Natalie [Cornell University; Bonan, Gordon [National Center for Atmospheric Research (NCAR); Running, Steven [University of Montana, Missoula; Fung, Inez [University of California, Berkeley

2009-01-01T23:59:59.000Z

164

Electric Currents Electric Current  

E-Print Network [OSTI]

coefficient of resistivity Electric Power: = = = Also, = . So, = = 2 = 2 Unit of Power(P): Watt (WChapter 18 Electric Currents #12;Electric Current: Flow of electric charge Current is flow of positive charge. In reality it's the electron moves in solids- Electron current. #12;Ohm's Law : Resistance

Yu, Jaehoon

165

Characterization of high-power lithium-ion cells during constant current cycling. Part I. Cycle performance and electrochemical diagnostics  

SciTech Connect (OSTI)

Twelve-cm{sup 2} pouch type lithium-ion cells were assembled with graphite anodes, LiNi{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2} cathodes and 1M LiPF{sub 6}/EC/DEC electrolyte. These pouch cells were cycled at different depths of discharge (100 percent and 70 percent DOD) at room temperature to investigate cycle performance and pulse power capability. The capacity loss and power fade of the cells cycled over 100 percent DOD was significantly faster than the cell cycled over 70 percent DOD. The overall cell impedance increased with cycling, although the ohmic resistance from the electrolyte was almost constant. From electrochemical analysis of each electrode after cycling, structural and/or impedance changes in the cathode are responsible for most of the capacity and power fade, not the consumption of cycleable Li from side-reactions.

Shim, Joongpyo; Striebel, Kathryn A.

2003-01-24T23:59:59.000Z

166

Preliminary evaluation of the performance, water use, and current application trends of evaporative coolers in California climates  

SciTech Connect (OSTI)

This paper describes the latest results of an ongoing analysis investigating the potential for evaporative cooling as an energy-efficient alternative to standard air-conditioning in California residences. In particular, the study uses detailed numerical models of evaporative coolers linked with the DOE-2 building energy simulation program to study the issues of indoor comfort, energy and peak demand savings with and without supplemental air-conditioning and consumptive water use. In addition, limited surveys are used to assess the current market availability of evaporative cooling in California, typical contractor practices and costs, and general acceptance of the technology among engineers, contractors, and manufacturers. The results show that evaporative coolers can provide significant energy and peak demand savings in California residences, but the impact of the increased indoor humidity on human comfort remains an unanswered question that requires further research and clarification. Evaluated against ASHRAE comfort standards developed primarily for air-conditioning both direct and two-stage evaporative coolers would not maintain comfort at peak cooling conditions due to excessive humidity. However, using bioclimatic charts that place human comfort at the 80% relative humidity line, the study suggests that direct evaporative coolers will work in mild coastal climates, while two-stage models should provide adequate comfort in Title 24 houses throughout California, except in the Imperial Valley. The study also shows that evaporative coolers will increase household water consumption by less than 6% on an annual basis, and as much as 23% during peak cooling months, and that the increases in water cost are minimal compared to the electricity savings. Lastly, a survey of engineers and contractors revealed generally positive experiences with evaporative coolers, with operational cost savings, improved comfort, unproved air quality as the primary benefits in their use.

Huang, Y.J.; Hanford, J.W.; Wu, H.F.

1992-09-01T23:59:59.000Z

167

Energy Savings and NOx Emissions Reduction Potential from the 2012 Federal Legislation to Phase Out Incandescent Lamps in Texas  

E-Print Network [OSTI]

Lamps in Texas Description Value Reference Total Housing Units in Texas in 2013: 10,204,056 Real Estate Center, Texas A&M University3, U.S. Census Bureau4 5 Average Lighting Electricity Usage per House: 1,946 kWh/yr NREL Building America Program6... Savings in Texas: 10,424,973 MWh/yr OSD CFL Savings in Texas: 28,562 MWh/day By 2013, it is estimated that total savings of 10,424,973 MWh/yr would be achieved from replacing incandescent lamps with compact fluorescent lamps (CFL) in residential...

Liu, Zi; Baltazar, Juan Carlos; Haberl, Jeff; Soman, Rohit

168

LED lamp or bulb with remote phosphor and diffuser configuration with enhanced scattering properties  

DOE Patents [OSTI]

An LED lamp or bulb is disclosed that comprises a light source, a heat sink structure and an optical cavity. The optical cavity comprises a phosphor carrier having a conversions material and arranged over an opening to the cavity. The phosphor carrier comprises a thermally conductive transparent material and is thermally coupled to the heat sink structure. An LED based light source is mounted in the optical cavity remote to the phosphor carrier with light from the light source passing through the phosphor carrier. A diffuser dome is included that is mounted over the optical cavity, with light from the optical cavity passing through the diffuser dome. The properties of the diffuser, such as geometry, scattering properties of the scattering layer, surface roughness or smoothness, and spatial distribution of the scattering layer properties may be used to control various lamp properties such as color uniformity and light intensity distribution as a function of viewing angle.

Tong, Tao; Le Toquin, Ronan; Keller, Bernd; Tarsa, Eric; Youmans, Mark; Lowes, Theodore; Medendorp, Jr., Nicholas W; Van De Ven, Antony; Negley, Gerald

2014-11-11T23:59:59.000Z

169

Xenon flash lamp pumped self-frequency doubling NYAB pulsed laser  

Science Journals Connector (OSTI)

Neodymium doped yttrium aluminum borate (NYAB) crystals with sizes up to 45mm have been grown successfully. NYAB rod of 4 ? 12mm was pumped by xenon flash lamp, and several mJ of 0.53?m green laser output was obtained. The oscillation threshold, the pulse duration, the laser beam polarization, and the laser beam divergence were measured to be 78mJ, 100ns, 90% and 2mrad, respectively.

Luo Zundu; Jiang Aidong; Huang Yichuan; Qiu Minwang

1989-01-01T23:59:59.000Z

170

2015-01-28 Issuance: Test Procedure for Fluorescent Lamp Ballasts; Final Rule Correction  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register final rule correction regarding test procedures for fluorescent lamp ballasts, as issued by the Deputy Assistant Secretary for Energy Efficiency on January 28, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

171

Household Light Makes Global Heat: High Black Carbon Emissions From Kerosene Wick Lamps  

Science Journals Connector (OSTI)

(3) Lighting is another component of this household energy challenge, with millions of households still relying on simple liquid-fueled lamps, but little is known of the associated environmental and health impacts. ... For laboratory tests, CO2 and CO concentrations were measured in real-time with a Li-COR 6252 (Li-COR Biosciences, Lincoln, NE) and Horiba AIA-220 (Horiba, Kyoto, Japan) nondispersive infrared (NDIR) analyzer, respectively. ...

Nicholas L. Lam; Yanju Chen; Cheryl Weyant; Chandra Venkataraman; Pankaj Sadavarte; Michael A. Johnson; Kirk R. Smith; Benjamin T. Brem; Joseph Arineitwe; Justin E. Ellis; Tami C. Bond

2012-11-19T23:59:59.000Z

172

Creating markets for new products to replace incandescent lamps: The international experience  

SciTech Connect (OSTI)

Since the summer of 1995, several organizations have been in pursuit of what many consider the Holy Grail of lighting technology--a low-cost, drop-in, energy-efficient replacement for the incandescent lamp. This paper summarizes the international experience in attempting to catalyze the commercialization of a mass-market, replacement product that could have major impact on residential lighting energy consumption in US and EU homes. The technology procurement effort was originally spearheaded by US Federal Government through a loose collaboration between the Department of Defense (DoD), the Environmental Protection Agency (EPA) and the Department of Energy (DOE). The DoD agreed to serve as the anchor buyer for a low-cost, drop-in replacement product for standard-sized light bulbs that provide at least 30 percent energy savings compared to traditional incandescent lamps. In parallel to the US effort, the International Energy Agency launched a co-operative technology procurement effort by assembling large buyers' groups in Finland, the Netherlands, Sweden, and the United Kingdom to pull a similar efficient lighting product into the European market. The lukewarm response from lamp manufacturers to these two technology procurement efforts illustrates the challenges of transforming residential lighting from incandescent to efficient lighting.

Rubinstein, F.; Borg, N.; Horowitz, N.; Narel, T.; Morehouse, E.T. Jr.

1998-07-01T23:59:59.000Z

173

Facility for high-heat flux testing of irradiated fusion materials and components using infrared plasma arc lamps  

Science Journals Connector (OSTI)

A new high-heat flux testing (HHFT) facility using water-wall stabilized high-power high-pressure argon plasma arc lamps (PALs) has been developed for fusion applications. Itcan accommodate irradiated plasma facing component materials and sub-size mock-up divertor components. Two PALs currently available at Oak Ridge National Laboratorycan provide maximum incident heat fluxes of 4.2 and 27MWm?2, which are prototypic of fusion steady state heat flux conditions, over a heated area of 9?12 and 1?10cm2, respectively. The use of PAL permits the heat source to be environmentally separated from the components of the test chamber, simplifying the design to accommodate safe testing of low-level irradiated articles and materials under high-heat flux. Issues related to the operation and temperature measurements during testing of tungsten samples are presented and discussed. The relative advantages and disadvantages of this photon-based HHFT facility are compared to existing e-beam and particle beam facilities used for similar purposes.

Adrian S Sabau; Evan K Ohriner; Jim Kiggans; David C Harper; Lance L Snead; Charles R Schaich

2014-01-01T23:59:59.000Z

174

Facility for high heat flux testing of irradiated fusion materials and components using infrared plasma arc lamps  

SciTech Connect (OSTI)

A new high-heat flux testing facility using water-wall stabilized high-power high-pressure argon Plasma Arc Lamps (PALs) has been developed for fusion applications. It can handle irradiated plasma facing component materials and mock-up divertor components. Two PALs currently available at ORNL can provide maximum incident heat fluxes of 4.2 and 27 MW/m2 over a heated area of 9x12 and 1x10 cm2, respectively, which are fusion-prototypical steady state heat flux conditions. The facility will be described and the main differences between the photon-based high-heat flux testing facilities, such as PALs, and the e-beam and particle beam facilities more commonly used for fusion HHF testing are discussed. The components of the test chamber were designed to accommodate radiation safety and materials compatibility requirements posed by high-temperature exposure of low levels irradiated tungsten articles. Issues related to the operation and temperature measurements during testing are presented and discussed.

Sabau, Adrian S [ORNL] [ORNL; Ohriner, Evan Keith [ORNL] [ORNL; Kiggans, Jim [ORNL] [ORNL; Harper, David C [ORNL] [ORNL; Snead, Lance Lewis [ORNL] [ORNL; Schaich, Charles Ross [ORNL] [ORNL

2014-01-01T23:59:59.000Z

175

A New Rb Lamp Exciter Circuit for Rb atomic clocks and Studies on Transition from Ring to Red mode  

E-Print Network [OSTI]

In this paper we describe the development of novel RF exciter circuit for electrode less Rb lamp. The lamp exciter circuit is a RF oscillator with a a new configuration operating at 60 to 65 MHz frequency with 3 to 4 watt power. The Rb lamp is used in exciting the ground state hyperfine transitions in Rb atom in a glass cell placed inside a tuned microwave cavity, As the frequency of these hyperfine transitions is very stable it is used in the development of Rb atomic clock by phase locking the oven controlled crystal oscillator (OCXO) to this atomic transition frequency. The details of the Rb lamp exciter are presented in the paper.The Lamp is ideally operated in ring mode as in this mode the linewidth is narrow and there is no self reversal. However, high temperature and RF excitation power may drive the Rb lamp to red mode which gives rise to line broadening and self reversal. It is the experience that mode change from ring to red deteriorates the atomic signal strength and S/N. In this paper the reasons of mode change are also discussed.

Savita Singh; Bikash Ghosal; G M Saxena

2010-11-10T23:59:59.000Z

176

Mercury Vapor Release from Broken Compact Fluorescent Lamps and In Situ Capture by New Nanomaterial Sorbents  

Science Journals Connector (OSTI)

There is one report of Hg poisoning (acrodynia) in a child exposed to broken tube-type fluorescents in a detailed case study presented by Tunnessen et al. (6). ... Similar release patterns but lower amounts were seen for spent bulbs (example result 90 ?g in 24 h) or from the fracture site of a new bulb after glass removal to simulate cleanup. ... Artificial lighting systems are transitioning from incandescent to compact fluorescent lamp (CFL) and light-emitting diode (LED) bulbs in response to the U.S. Energy Independence and Security Act and the EU Ecodesign Directive, which leads to energy ... ...

Natalie C. Johnson; Shawn Manchester; Love Sarin; Yuming Gao; Indrek Kulaots; Robert H. Hurt

2008-06-27T23:59:59.000Z

177

2014-10-14 Issuance: Test Procedures Correction for Fluorescent Lamp Ballasts; Notice of Proposed Rulemaking  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register notice of proposed rulemaking regarding test procedures for fluorescent lamp ballasts, as issued by the Deputy Assistant Secretary for Energy Efficiency on October 14, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

178

Influence of the lamp filling on the pumping conditions in a pulsed YAG:Nd3+ laser  

Science Journals Connector (OSTI)

The pumping conditions in pulsed YAG:Nd3+ lasers are determined, to a great extent, by the filling and the discharge conditions in the pump lamps. It is reported that the highest efficiency under free-oscillation conditions was obtained when krypton discharge lamps were used. These lamps had a discharge gap 60 mm long and 5 mm in diameter. They emitted flashes of about 200 ?sec duration. The best results were obtained when the initial gas pressure was ~1000 torr and the discharge energy was W ~ 100150J. The efficiency was lower when the value of W was either larger or smaller. The nature of the filling had little effect on the laser efficiency when xenon and krypton lamps were used to provide energies W close to the nominal value of 250J. The pumping conditions could not be improved significantly by the use of other fillings (inert gases or their mixtures were used). The principal results obtained were valid also when the lamps were operated at a repetition frequency of ? ? 10 Hz.

Vitalii M Podgaetskii; B V Skvortsov; A N Tokareva

1971-01-01T23:59:59.000Z

179

Method of controlling the mercury vapor pressure in a photo-chemical lamp or vapor filter used for Hg.sup.196 enrichment  

DOE Patents [OSTI]

The present invention is directed to a method of eliminating the cold spot zones presently used on Hg.sup.196 isotope separation lamps and filters by the use of a mercury amalgams, preferably mercury - indium amalgams. The use of an amalgam affords optimization of the mercury density in the lamp and filter of a mercury enrichment reactor, particularly multilamp enrichment reactors. Moreover, the use of an amalgam in such lamps and/or filters affords the ability to control the spectral line width of radiation emitted from lamps, a requirement for mercury enrichment.

Grossman, Mark W. (Belmont, MA)

1993-01-01T23:59:59.000Z

180

Method of controlling the mercury vapor pressure in a photo-chemical lamp or vapor filter used for Hg[sup 196] enrichment  

DOE Patents [OSTI]

The present invention is directed to a method of eliminating the cold spot zones presently used on Hg[sup 196] isotope separation lamps and filters by the use of a mercury amalgams, preferably mercury - indium amalgams. The use of an amalgam affords optimization of the mercury density in the lamp and filter of a mercury enrichment reactor, particularly multilamp enrichment reactors. Moreover, the use of an amalgam in such lamps and/or filters affords the ability to control the spectral line width of radiation emitted from lamps, a requirement for mercury enrichment.

Grossman, M.W.

1993-02-16T23:59:59.000Z

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


181

DOE Publishes Final Rule for the Request for Exclusion of 100 Watt R20 Short Incandescent Reflector Lamps from Energy Conservation Standards  

Broader source: Energy.gov [DOE]

The Department of Energy has published a final rule regarding the request for exclusion of 100 Watt R20 short incandescent reflector lamps from energy conservation standards.

182

Current Testbed Research  

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

Current Testbed Research Previous Testbed Research Proposal Process Terms and Conditions Dark Fiber Testbed Performance (perfSONAR) Software & Tools Development Partnerships...

183

The Model 5000-16C 1000 WATT FEL Lamp Standard pro-vides absolute calibration of spectral irradiance from 250 nm to  

E-Print Network [OSTI]

The Model 5000-16C 1000 WATT FEL Lamp Standard pro- vides absolute calibration of spectral. It has been selected by the National Institute of Standards and Technology to replace the 1000 watt, DXW-pin 1000 watt lamp that is adapted by Gamma Scientific into a bi-post configuration. It is used

184

A Novel High-Power-Factor LED-Lamp Driver Based on a Single-Stage Power Conversion  

Science Journals Connector (OSTI)

This paper proposes a novel single-stage driver for supplying a T8-type light-emitting diode (LED) lamp with high power factor. The presented driver integrates a dual buck-boost converter with coupled inductors and a half-bridge series-resonant converter ... Keywords: converter, driver, light-emitting diode (LED)

Chun An Cheng, En Chih Chang, Ching Shien Tseng, Tsung Yuan Chung

2014-06-01T23:59:59.000Z

185

New Energy Efficiency Standards for Metal Halide Lamp Fixtures to Save on Energy Bills and Reduce Carbon Pollution  

Office of Energy Efficiency and Renewable Energy (EERE)

As part of the Energy Departments efforts to develop efficiency standards that cut carbon pollution and save money by saving energy, U.S. Energy Secretary Ernest Moniz announced that the Department has finalized new energy efficiency standards for metal halide lamp fixtures.

186

Enhanced electrochemical performance of sulfur cathode by incorporation of a thin conductive adhesion layer between the current collector and the active material layer  

Science Journals Connector (OSTI)

In the typical electrode configuration, the active material layer is directly supported on a metallic ... collector. The interface between current collector and active material layer imposes additional charge tra...

Zhian Zhang; Zhiyong Zhang; Xiwen Wang; Jie Li

2014-05-01T23:59:59.000Z

187

Color stable phosphors for LED lamps and methods for preparing them  

SciTech Connect (OSTI)

An LED lamp includes a light source configured to emit radiation with a peak intensity at a wavelength between about 250 nm and about 550 nm; and a phosphor composition configured to be radiationally coupled to the light source. The phosphor composition includes particles of a phosphor of formula I, said particles having a coating composition disposed on surfaces thereof; ((Sr.sub.1-zM.sub.z).sub.1-(x+w)A.sub.wCe.sub.x).sub.3(Al.sub.1-ySi.sub.y-)O.sub.4+y+3(x-w)F.sub.1-y-3(x-w) I wherein the coating composition comprises a material selected from aluminum oxide, magnesium oxide, calcium oxide, barium oxide, strontium oxide, zinc oxide, aluminum hydroxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, strontium hydroxide, zinc hydroxide, aluminum phosphate, magnesium phosphate, calcium phosphate, barium phosphate, strontium phosphate, and combinations thereof; and A is Li, NA, K, or Rb, or a combination thereof; M is Ca, Ba, Mg, Zn, or a combination thereof; and 0

Murphy, James Edward; Setlur, Anant Achyut; Camardello, Samuel Joseph

2013-11-26T23:59:59.000Z

188

Design and Realize of the Graphics Platform for LED Lamps Layout Based on GDI+ and Dual-Buffer  

Science Journals Connector (OSTI)

Based on the GDI+ class library and dual-buffer technology of .NET framework, the software for LED lamps layout is developed. On the basis of determining the scheme of layout platform, the metafile class library model by Composite design-set and the process of calling the LED pixels metafile symbol interface are designed firstly. The design method of realizing the LED pixels metafile visual editing on the drawn LED logical pixel based on GDI+ is analyzed. The dual-buffer technology is used to solve the problem of flicker when fast refreshing. The testing results show that the platform can meet the basic function requirements of engineering application, and realize partial adjust on the process of LED lamps layout without distortion.

Wen Yuanmei; Nie Xinming; Liu Guixiong

2012-01-01T23:59:59.000Z

189

Mechanical design of PlayLamp : a minimally intrusive device for recording the behavior of children at-risk of developmental disorders  

E-Print Network [OSTI]

This thesis paper documents the design process, decisions, and outcomes of the design of the physical form factor of PlayLamp, a device for video and audio recording the development of children at-risk of having developmental ...

Steger, Stephen Andrew

2008-01-01T23:59:59.000Z

190

CALiPER Report 20.1: Subjective Evaluation of Beam Quality, Shadow Quality, and Color Quality for LED PAR38 Lamps  

Broader source: Energy.gov [DOE]

This December 3, 2013 webinar explored the findings ofCALiPER 20.1: Subjective Evaluation of Beam Quality, Shadow Quality, and Color Quality for LED PAR38 Lamps and discussed what attributes to...

191

Local Resistance Profiling of Ultra Shallow Junction Annealed with Combination of Spike Lamp and Laser Annealing Processes using Scanning Spreading Resistance Microscope  

SciTech Connect (OSTI)

Local resistance profiles of ultra shallow boron and arsenic implanted into silicon with energies of 2.0 and 4.0 keV and doses of 2.0x10{sup 15} and 1.0x10{sup 15} ions/cm{sup 2} activated by a combination of conventional spike lamp and laser annealing processes were measured by scanning spreading resistance microscope (SSRM) with a depth resolution of less than 10 nm. The lowest local resistance at the low resistance region in 2.0 keV boron implanted silicon with 1050 deg. C spike lamp annealing followed by 0.35 kW/mm{sup 2} laser annealing was half of that without laser annealing. The lowest local resistance at the low resistance region in the arsenic implanted silicon activated by 1050 deg. C spike lamp annealing followed by 0.39 kW/mm{sup 2} laser annealing was 74% lower than that followed by 0.36 kW/mm{sup 2} laser annealing. The lowest local resistances at the low resistance regions in the arsenic implanted silicon with 0.36 and 0.39 kW/mm{sup 2} laser annealing followed by 1050 deg. C spike lamp annealing were 41 and 33% lower than those with spike lamp annealing followed by laser annealing. Laser annealing followed by spike lamp annealing could suppress the diffusion of the impurities and was suitable for making the ultra shallow and low resistance regions.

Abo, Satoshi; Nishikawa, Kazuhisa; Ushigome, Naoya; Wakaya, Fujio; Takai, Mikio [Center for Quantum Science and Technology under Extreme Conditions, Osaka University, 1-3, Machikaneyama, Toyonaka, Osaka, 560-8531 (Japan); Iwamatsu, Toshiaki; Oda, Hidekazu [Advanced Device Technology Department, Production and Technology Unit, Devices and Analysis Technology Division, Renesas Electronics Corporation, 751, Horiguchi, Hitachinaka, Ibaraki, 312-8504 (Japan)

2011-01-07T23:59:59.000Z

192

The Current Performance of the Wide Range (90-2500 eV) Soft X-ray Beamline at the Australian Synchrotron  

SciTech Connect (OSTI)

The Soft X-ray beamline at the Australian synchrotron has been constructed around a collimated light Plane Grating Monochromator taking light from an Elliptically Polarized Undulator (EPU). The beamline covers a wide photon energy range between 90 to 2500 eV, using two gratings of 250 l/mm and 1200 l/mm. At present the output from the monochromator is directed into one branchline with a dedicated UHV endstation. The measured performance of the beamline in flux and resolution is shown to be very close to that of theoretical calculations.

Cowie, B. C. C.; Tadich, A.; Thomsen, L. [Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria (Australia)

2010-06-23T23:59:59.000Z

193

Potential Environmental Impacts from the Metals in Incandescent, Compact Fluorescent Lamp (CFL), and Light-Emitting Diode (LED) Bulbs  

Science Journals Connector (OSTI)

Artificial lighting systems are transitioning from incandescent to compact fluorescent lamp (CFL) and light-emitting diode (LED) bulbs in response to the U.S. Energy Independence and Security Act and the EU Ecodesign Directive, which leads to energy savings and reduced greenhouse gas emissions. ... The CFLs and LEDs have higher resource depletion and toxicity potentials than the incandescent bulb due primarily to their high aluminum, copper, gold, lead, silver, and zinc. ... mercury pollution; redn. in electricity demand from the substitution of incandescent bulbs with fluorescents leads to reduced mercury emissions during the use of the bulb. ...

Seong-Rin Lim; Daniel Kang; Oladele A. Ogunseitan; Julie M. Schoenung

2012-12-13T23:59:59.000Z

194

2014-05-05 Issuance: Test Procedures for High-Intensity Discharge Lamps; Supplemental Notice of Proposed Rulemaking  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register supplemental notice of proposed rulemaking regarding test procedures for high-intesity discharge lamps, as issued by the Deputy Assistant Secretary for Energy Efficiency on May 5, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

195

2015-01-26 Issuance: Energy Conservation Standards for General Service Lamps; Extension of Public Comment Period  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register extension of comment period regarding energy conservation standards for general service lamps, as issued by the Deputy Assistant Secretary for Energy Efficiency on January 26, 2015. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

196

Current Status  

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

Current Status Current Status > Content on this page requires a newer version of Adobe Flash Player. Get Adobe Flash player July 31, 1942 The Army Corp of Engineers leases 1,025 acres of the Cook County Forest Preserve to build a research facility. November 1942 Under the direction of Enrico Fermi, a group of scientists at the University of Chicago begin building Chicago Pile-1 (CP-1). Security and secracy were essential. December 2, 1942 Enrico Fermi's team creates the world's first self-sustaining nuclear chain reaction using the CP-1 reactor under Stagg Field at the University of Chicago. CP-1 1943 The experiments under Stagg Field shut down, and the scientists move to a 19 acre section of the leased forest preserve, known as Site A. CP-1 is reconstructed and modified at Site A and renamed Chicago Pile 2 (CP-2).

197

Current Testbed Research  

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

Research Research R&D Overview 100G Testbed Testbed Description Testbed Results Current Testbed Research Previous Testbed Research Proposal Process Terms and Conditions Virtual Circuits (OSCARS) Performance (perfSONAR) Tools Development Green Networking Authentication & Trust Federation (ATF) Partnerships Contact Us Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Current Testbed Research The following projects are currently using the ESnet Testbed. Previous testbed projects descriptions are located here. New Projects, Summer 2013 Project Name/PI End-system affinities and the performance of high-speed flows, Dipak Ghosal (UC Davis)

198

Jade Sky Technologies Partners with CLTC on LED Replacement Lamp Upgrade Project UC Davis' California Lighting Technology Center will utilize Jade Sky Technologies' driver ICs to help spur  

E-Print Network [OSTI]

Jade Sky Technologies Partners with CLTC on LED Replacement Lamp Upgrade Project UC Davis of cost-effective, easy-to-use LED lighting solutions Milpitas, Calif. ­ October 15, 2013 ­ Jade Sky Technologies (JST), a clean-tech start-up manufacturer of driver ICs for LED lighting applications, announces

California at Davis, University of

199

Energy Currents  

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

7 7 Energy Currents Survey Result Our thanks to all of you who responded to our reader survey. We were pleased that many of you find this a useful publication. Your opinions will help us improve it further. The CBS News' readers include a variety of professions. 17% of respondents were consultants, 15% were engineers, 11% were teachers, 11% were scientists, 10% were program managers. The remainder included contractors, designers, marketing professionals policy analysts, journalists and others. Ranked according to highest response first, the majority of readers work in education, various levels of government, utilities, non-profit organizations, and a variety of private concerns. A surprisingly large number, 52% of the respondents, are Internet users and 23% have browsed the World Wide Web. 8% have browsed the Center's Web site

200

Energy Currents  

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

1 1 Energy Currents LBL Scientist Joins Clinton Administration Art Rosenfeld Art Rosenfeld, former head of LBL's Center for Building Science, has been named a senior advisor in the U.S. Department of Energy, serving under Assistant Secretary for Energy Efficiency and Renewable Energy Christine Ervin. His appointment began July 1. In Washington, Rosenfeld will sit on President Clinton's National Science and Technology Council. He will also serve as national spokesperson for the Administration's "Cool Communities" program and will help steer through the political process a proposed new "government-sponsored enterprise"- called EFFIE MAE for Energy Efficiency Mortgage and Loan Agency-that would guarantee loans for retrofitting energy-inefficient public buildings.

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


201

L&E: Refrigerated Display Case | The Better Buildings Alliance  

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

Lighting & Electrical » Adopt the Lighting & Electrical » Adopt the refrigerated display case lighting performance specification and start saving on your case lighting costs Activities Technology Solutions Teams Lighting & Electrical Space Conditioning Plug & Process Loads Food Service Refrigeration Laboratories Energy Management & Information Systems Public Sector Teams Market Solutions Teams Adopt the refrigerated display case lighting performance specification and start saving on your case lighting costs The LED Refrigerated Display Case Lighting Specification delivers nearly 50% energy savings compared to typical display case lighting. If all retail refrigerated display cases switched today to LED systems, over 2.1 TWh of electricity could be saved annually. LED Refrigerated Display Case Lighting Specification

202

Hospital remedies architect's lighting overdesign for $22k: installs current limiters  

SciTech Connect (OSTI)

St. Luke's Hospital in Racine, Wisconsin is spending $22,000 to install current limiters in the fluorescent lamps of a new wing after finding that the architectural firm overdesigned the lighting fixtures so much that the hospital's lighting expenses were 50% higher than necessary. The hospital expects an 8-month payback on the current limiters. The hospital's corridor lighting reached 45-55 footcandles (fc), when only three fc are required for emergency lighting and 15 for corridor lighting. Representatives of the architectural firm argued that the design did not exceed state wattage requirements.

Ponczak, G.

1984-10-29T23:59:59.000Z

203

Side-by-Side Testing of Commercial Office Lighting Systems: Two-lamp Fluorescent Fixtures  

E-Print Network [OSTI]

. Guide to Performance Evaluation of Efficient Lighting Products, Lighting Research Center, Rensselaer Polytechnic Institute, Troy, NY. IES, 1987. IES Lighting Handbook: 1987 Ap~lications Volume, Illuminating Engineering Society of North America, New... Transactions on Industrv A~plications, No. 5, pp. 1189-1 197. Verderber, R.R. and Rubinstein, F.M. and Ward, G., 1989. Photoelectric Control of Daylight Following Lighting Systems, CU- 6243, Electric Power Research Institute, Palo Alto, CA. Rubinstein, F...

Parker, D. S.; Schrum, L.; Sonne, J. K.; Stedman, T. C.

1996-01-01T23:59:59.000Z

204

Spatial and time-dependent distribution of plasma parameters in the metal-halide arc lamp  

E-Print Network [OSTI]

It was shown by several authors that closed high pressure arc a.c. discharge in mercury vapors with addition of metal halide cannot be described in frames of the local thermodynamic equilibrium (LTE) model. However some plasma parameters (electron and high lying excited states densities as well as Hg metastable levels densities) are assumed to be in equilibrium with electron temperature and these assumptions are applied in plasma diagnostics. To verify these supposition the method of local plasma spectroscopy based on spatial and temporal distribution of spectral line profiles was developed. The experimental set up is based on diffraction spectrometer with large aperture, spatial scanning device and photodetector, which allows to carry out the measurements in chosen phases of current period. The software for data acquisition and processing is based on LabVIEW system. The original method of joint data processing was applied to data arrays containing spatial, spectral and temporal distribution of a source surfa...

Khakhaev, A; Ekimov, K; Soloviev, A; Khakhaev, Anatoly; Luizova, Lidia; Ekimov, Konstantin; Soloviev, Alexey

2004-01-01T23:59:59.000Z

205

Report 20.4: Lumen and Chromaticity Maintenance of LED PAR38 Lamps  

Broader source: Energy.gov [DOE]

The U.S. Department of Energy (DOE) CALiPER program has been purchasing and testing general illumination solid-state lighting (SSL) products since 2006. CALiPER relies on standardized photometric testing (following the Illuminating Engineering Society of North America [IES] approved method LM-79-081) conducted by accredited, independent laboratories. Results from CALiPER testing are available to the public via detailed reports for each product or through summary reports, which assemble data from several product tests and provide comparative analyses. Increasingly, CALiPER investigations also rely on new test procedures that are not industry standards; these experiments provide data that is essential for understanding the most current issues facing the SSL industry.

206

L&E - high efficiency lighting for parking structure | The Better Buildings  

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

structure structure Activities Technology Solutions Teams Lighting & Electrical Space Conditioning Plug & Process Loads Food Service Refrigeration Laboratories Energy Management & Information Systems Public Sector Teams Market Solutions Teams Adopt high-efficiency lighting for your parking structure Parking structures and garages are typically lighted by older HID lighting technology without any energy-saving controls. The latest high-efficiency alternatives with energy-saving controls-including light-emitting diode (LED), induction, and fluorescent technology options-can save building owners over 40% on their parking lot lighting bills while delivering additional benefits such as better-lighted spaces. The Lighting & Electrical team developed a performance specification that

207

L&E: Adopt high-efficiency lighting for your parking lot | The Better  

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

lot lot Activities Technology Solutions Teams Lighting & Electrical Space Conditioning Plug & Process Loads Food Service Refrigeration Laboratories Energy Management & Information Systems Public Sector Teams Market Solutions Teams Adopt high-efficiency lighting for your parking lot Most parking lots are illuminated by older high-intensity discharge (HID) lighting technology without any energy-saving controls. New light-emitting diode (LED) technology can cut parking lot lighting energy bills by 40%, or much more with controls, while delivering additional benefits including long life, reduced maintenance costs, and improved lighting uniformity. The Lighting & Electrical team developed a performance specification to help building owners take advantage of these improved lighting

208

Effect of organic salt doping on the performance of single layer bulk heterojunction organic solar cell  

SciTech Connect (OSTI)

The effect of organic salt, tetrabutylammonium hexafluorophosphate (TBAPF{sub 6}) doping on the performance of single layer bulk heterojunction organic solar cell with ITO/MEHPPV:PCBM/Al structure was investigated where indium tin oxide (ITO) was used as anode, poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEHPPV) as donor, (6,6)-phenyl-C61 butyric acid methyl ester (PCBM) as acceptor and aluminium (Al) as cathode. In contrast to the undoped device, the electric field-treated device doped with TBAPF{sub 6} exhibited better solar cell performance under illumination with a halogen projector lamp at 100 mW/cm{sup 2}. The short circuit current density and the open circuit voltage of the doped device increased from 0.54 {mu}A/cm{sup 2} to 6.41 {mu}A/cm{sup 2} and from 0.24 V to 0.50 V, respectively as compared to those of the undoped device. The significant improvement was attributed to the increase of built-in electric field caused by accumulation of ionic species at the active layer/electrode interfaces. (author)

Yap, C.C.; Yahaya, M. [School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor (Malaysia); Salleh, M.M. [Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor (Malaysia)

2011-01-15T23:59:59.000Z

209

DOE CALiPER Program, Report 20.1 Subjective Evaluation of Beam Quality, Shadow Quality, and Color Quality for LED PAR38 Lamps  

SciTech Connect (OSTI)

This report focuses on human-evaluated characteristics, including beam quality, shadow quality, and color quality. Using a questionnaire that included rank ordering, opinions on 27 of the Report 20 PAR38 lamps were gathered during a demonstration event for members of the local Illuminating Engineering Society (IES) chapter. This was not a rigorous scientific experiment, and the data should not be extrapolated beyond the scope of the demonstration. The results suggest that many of the LED products compared favorably to halogen PAR38 benchmarks in all attributes considered. LED lamps using a single-emitter design were generally preferred for their beam quality and shadow quality, and the IES members ranking of color quality did not always match the rank according to the color rendering index (CRI).

Royer, Michael P.; Poplawski, Michael E.; Miller, Naomi J.

2013-10-01T23:59:59.000Z

210

DOE/EA-1664: Environmental Assessment for 10 CFR 430 Energy Conservation Standards: Energy Conservation Standards for Fluorescent and Incandescent Lamps (June 2009)  

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

4 4 Environmental Assessment for 10 CFR Part 430 Energy Conservation Standards: Energy Conservation Standards for Fluorescent and Incandescent Lamps June 2009 16-i CHAPTER 16. ENVIRONMENTAL ASSESSMENT TABLE OF CONTENTS 16.1 INTRODUCTION ......................................................................................................... 16-1 16.2 AIR EMISSIONS ANALYSIS...................................................................................... 16-1 16.2.1 Air Emissions Descriptions............................................................................................ 16-1 16.2.2 Air Quality Regulation................................................................................................... 16-3 16.2.3 Global Climate Change..................................................................................................

211

Current vs. Voltage Feedback Amplifiers  

E-Print Network [OSTI]

?' In most applications, the differences between current feedback (CFB) and voltage feedback (VFB) are not apparent. Today's CFB and VFB amplifiers have comparable performance, but there are cer- tain unique Performance · Feedback Freedom Aside from the well-known attribute of CFB amplifiers, gain

Lanterman, Aaron

212

Overmodulation in Current Controlled Drives  

E-Print Network [OSTI]

220 Chapter 5 Overmodulation in Current Controlled Drives 5.1 Introduction The performance of voltage feedforward controlled constant V f PWM-VSI drives is insu cient for most industrial processes performance control methods. Electric traction, el- evators, textile machines, paper and plastic machines

Hava, Ahmet

213

Phosphors for LED lamps  

SciTech Connect (OSTI)

A phosphor, a phosphor blend including the phosphor, a phosphor prepared by a process, and a lighting apparatus including the phosphor blend are disclosed. The phosphor has the formula (Ca.sub.1-p-qCe.sub.pK.sub.q).sub.xSc.sub.y(Si.sub.1-rGa.sub.r).sub.zO.su- b.12+.delta. or derived from a process followed using disclosed amounts of reactants. In the formula, (0

Murphy, James Edward; Manepalli, Satya Kishore; Kumar, Prasanth Nammalwar

2013-08-13T23:59:59.000Z

214

2014-12-05 Issuance: Energy Conservation Standard for General Service Lamps; Notice of Public Meeting and Availability of the Preliminary Technical Support Document  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register notice of public meeting and availability of the preliminary technical support document regarding energy conservation standards for general service lamps, as issued by the Deputy Assistant Secretary for Energy Efficiency on December 5, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

215

Tungsten and tungsten alloy powder metallurgy: Powder production and applications excluding lamps. (Latest citations from the US Patent bibliographic file with exemplary claims). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations of selected patents concerning the preparation of metallic and ceramic powders of tungsten and tungsten alloys, including applications of these materials. The hydrogen reduction of tungsten compounds together with alloying element compounds produce forms with characteristics of high density, hardness, wear resistance, high melting points, and abrasiveness. Topics include production of cathodes, heaters, filament wires, electrical contacts, acoustic absorbers, high-density sheets and coatings, hard penetrators, and tungsten carbide and metallized ceramics. Tungsten halogen lamps are examined in a separate bibliography.(Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

NONE

1997-01-01T23:59:59.000Z

216

Tungsten and tungsten alloy powder metallurgy: Powder production and applications excluding lamps. (Latest citations from the US Patent database). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations of selected patents concerning the preparation of metallic and ceramic powders of tungsten and tungsten alloys, including applications of these materials. The hydrogen reduction of tungsten compounds together with alloying element compounds produce forms with characteristics of high density, hardness, wear resistance, high melting points, and abrasiveness. Topics include production of cathodes, heaters, filament wires, electrical contacts, acoustic absorbers, high-density sheets and coatings, hard penetrators, and tungsten carbide and metallized ceramics. Tungsten halogen lamps are examined in a separate bibliography. (Contains a minimum of 97 citations and includes a subject term index and title list.)

Not Available

1993-05-01T23:59:59.000Z

217

Tungsten and tungsten alloy powder metallurgy: Powder production and applications excluding lamps. (Latest citations from the US Patent bibliographic file with exemplary claims). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations of selected patents concerning the preparation of metallic and ceramic powders of tungsten and tungsten alloys, including applications of these materials. The hydrogen reduction of tungsten compounds together with alloying element compounds produce forms with characteristics of high density, hardness, wear resistance, high melting points, and abrasiveness. Topics include production of cathodes, heaters, filament wires, electrical contacts, acoustic absorbers, high-density sheets and coatings, hard penetrators, and tungsten carbide and metallized ceramics. Tungsten halogen lamps are examined in a separate bibliography.(Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

NONE

1995-12-01T23:59:59.000Z

218

Tungsten and tungsten alloy powder metallurgy: Powder production and applications excluding lamps. (Latest citations from the US Patent bibliographic file with exemplary claims). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations of selected patents concerning the preparation of metallic and ceramic powders of tungsten and tungsten alloys, including applications of these materials. The hydrogen reduction of tungsten compounds together with alloying element compounds produce forms with characteristics of high density, hardness, wear resistance, high melting points, and abrasiveness. Topics include production of cathodes, heaters, filament wires, electrical contacts, acoustic absorbers, high-density sheets and coatings, hard penetrators, and tungsten carbide and metallized ceramics. Tungsten halogen lamps are examined in a separate bibliography. (Contains a minimum of 115 citations and includes a subject term index and title list.)

NONE

1995-02-01T23:59:59.000Z

219

NREL: Measurements and Characterization - Current Versus Voltage  

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

Current Versus Voltage Current Versus Voltage The National Renewable Energy Laboratory (NREL) Device Performance group uses current versus voltage (I-V) measurement systems to assess the main performance parameters for photovoltaic (PV) cells and modules. I-V measurement systems determine the output performance of devices, including: open-circuit voltage (Voc), short-circuit current (Isc), fill factor (FF), maximum power output of the device (Pmax), voltage at maximum power (Vmax), current at maximum power (Imax), and conversion efficiency of the device (η). Some I-V systems may also be used to perform dark I-V measurements to determine diode properties and series and shunt resistances. We use three I-V systems to measure performance of individual PV cells; and four for modules - two for measurements under simulated conditions; and

220

Current Solicitations - Hanford Site  

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

Home Prime Contracts Current Solicitations Small Business Other Sources DOE RL Contracting Officers DOE RL Contracting Officer Representatives Current Solicitations Email...

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


221

Current to Current Corporation | Open Energy Information  

Open Energy Info (EERE)

to Current Corporation to Current Corporation Jump to: navigation, search Name Current to Current Corporation Place Burlington, Massachusetts Zip 1803 Sector Ocean Product Developing a technology which generates power from ocean currents : Submersible Power Generators (SPG). Coordinates 44.446275°, -108.431704° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.446275,"lon":-108.431704,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

222

High-performance CFL downlights: The best and the brightest  

SciTech Connect (OSTI)

Downlight fixtures -- often referred to as ``recessed cans`` -- are among the most common lighting fixtures in commercial and residential settings. As such, they represent one of the most promising targets for improving lighting energy efficiency. The authors estimate that downlight fixtures account for more than one-fifth of the 2.8 billion incandescent lighting sockets in the US, and represent about 8 percent of total direct lighting energy use. Over 30 million new fixtures of this type are sold each year in the US. With existing and foreseeable technology, nearly two-thirds of the incandescent downlights in the US are candidates for retrofit or replacement with compact fluorescent lamps (CFLs) or fixtures. The remaining one-third, however, are unlikely to ever be replaceable with CFL technology because of constraints on light output, lighting quality, size, and cost-effectiveness of CFL alternatives. High performance downlight systems using compact fluorescent lamps and incorporating advanced optical, thermal, and ballast designs use up to 75 percent less energy than conventional incandescent downlight fixtures. Many CFL downlight fixtures, however, perform poorly. In this report, the authors explore ways in which various elements of fixture design influence performance. They also describe exemplary elements of high-performance designs, and evaluate several emerging or experimental technologies that promise to further improve efficiency.

Sardinsky, R.; Hawthorne, S.; Newcomb, J.

1993-12-31T23:59:59.000Z

223

World Record White OLED Performance Exceeds 100 lm/W  

Broader source: Energy.gov [DOE]

Universal Display Corporation (UDC) has successfully demonstrated a record-breaking white organic light-emitting diode (WOLED) with a power efficacy of 102 lm/W at 1000 cd/m2 using its proprietary, high-efficiency phosphorescent OLED technology. This achievement represents a significant milestone for OLED technology, demonstrating performance that surpasses the power efficacy of incandescent bulbs with less than 15 lm/W and fluorescent lamps at 60-90 lm/W. Funded in part by DOE, UDC's achievement is a major step toward DOE's roadmap goal of a 150 lm/W commercial OLED light source by 2015.

224

Thorium, uranium and rare earth elements content in lanthanide concentrate (LC) and water leach purification (WLP) residue of Lynas advanced materials plant (LAMP)  

SciTech Connect (OSTI)

Lynas Advanced Materials Plant (LAMP) has been licensed to produce the rare earths elements since early 2013 in Malaysia. LAMP processes lanthanide concentrate (LC) to extract rare earth elements and subsequently produce large volumes of water leach purification (WLP) residue containing naturally occurring radioactive material (NORM). This residue has been rising up the environmental issue because it was suspected to accumulate thorium with significant activity concentration and has been classified as radioactive residue. The aim of this study is to determine Th-232, U-238 and rare earth elements in lanthanide concentrate (LC) and water leach purification (WLP) residue collected from LAMP and to evaluate the potential radiological impacts of the WLP residue on the environment. Instrumental Neutron Activation Analysis and ?-spectrometry were used for determination of Th, U and rare earth elements concentrations. The results of this study found that the concentration of Th in LC was 1289.7 129 ppm (5274.9 527.6Bq/kg) whereas the Th and U concentrations in WLP were determined to be 1952.917.6 ppm (7987.4 71.9 Bq/kg) and 17.2 2.4 ppm respectively. The concentrations of Th and U in LC and WLP samples determined by ?- spectrometry were 1156 ppm (4728 22 Bq/kg) and 18.8 ppm and 1763.2 ppm (7211.4 Bq/kg) and 29.97 ppm respectively. This study showed that thorium concentrations were higher in WLP compare to LC. This study also indicate that WLP residue has high radioactivity of {sup 232}Th compared to Malaysian soil natural background (63 - 110 Bq/kg) and come under preview of Act 304 and regulations. In LC, the Ce and Nd concentrations determined by INAA were 13.2 0.6% and 4.7 0.1% respectively whereas the concentrations of La, Ce, Nd and Sm in WLP were 0.36 0.04%, 1.6%, 0.22% and 0.06% respectively. This result showed that some amount of rare earth had not been extracted and remained in the WLP and may be considered to be reextracted.

AL-Areqi, Wadeeah M., E-mail: walareqi@yahoo.com; Majid, Amran Ab., E-mail: walareqi@yahoo.com; Sarmani, Sukiman, E-mail: walareqi@yahoo.com [Nuclear Science Programme, School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi (Malaysia)

2014-02-12T23:59:59.000Z

225

LANSCE beam current limiter  

SciTech Connect (OSTI)

The Radiation Security System (RSS) at the Los Alamos Neutron Science Center (LANSCE) provides personnel protection from prompt radiation due to accelerated beam. Active instrumentation, such as the Beam Current Limiter, is a component of the RSS. The current limiter is designed to limit the average current in a beam line below a specific level, thus minimizing the maximum current available for a beam spill accident. The beam current limiter is a self-contained, electrically isolated toroidal beam transformer which continuously monitors beam current. It is designed as fail-safe instrumentation. The design philosophy, hardware design, operation, and limitations of the device are described.

Gallegos, F.R.

1996-06-01T23:59:59.000Z

226

Contractor Past Performance Information  

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

December 2009) December 2009) 1 Contractor Performance Information Guiding Principles The primary purpose of past performance evaluations is to ensure that accurate data on contractor performance is current and available for use in source selections. A past performance evaluation report provides a record of a contractor's performance, both positive and negative, on a given contract during a specified period of time. The quality of the narrative component supporting the past performance information evaluation is critical. If the evaluator takes the time to prepare an accurate and complete report, the evaluator helps ensure better quality in the products and services DOE buys now and those DOE plans to buy in the future.

227

Anomalous - viscosity current drive  

DOE Patents [OSTI]

An apparatus and method for maintaining a steady-state current in a toroidal magnetically confined plasma. An electric current is generated in an edge region at or near the outermost good magnetic surface of the toroidal plasma. The edge current is generated in a direction parallel to the flow of current in the main plasma and such that its current density is greater than the average density of the main plasma current. The current flow in the edge region is maintained in a direction parallel to the main current for a period of one or two of its characteristic decay times. Current from the edge region will penetrate radially into the plasma and augment the main plasma current through the mechanism of anomalous viscosity. In another aspect of the invention, current flow driven between a cathode and an anode is used to establish a start-up plasma current. The plasma-current channel is magnetically detached from the electrodes, leaving a plasma magnetically insulated from contact with any material obstructions including the cathode and anode.

Stix, Thomas H. (Princeton, NJ); Ono, Masayuki (Princeton Junction, NJ)

1988-01-01T23:59:59.000Z

228

Current | OpenEI Community  

Open Energy Info (EERE)

351 351 Varnish cache server Home Groups Community Central Green Button Applications Developer Utility Rate FRED: FRee Energy Database More Public Groups Private Groups Features Groups Blog posts Content Stream Documents Discussions Polls Q & A Events Notices My stuff Energy blogs 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142233351 Varnish cache server Current Home Ocop's picture Submitted by Ocop(5) Member 18 April, 2013 - 13:41 MHK LCOE Reporting Guidance Draft Cost Current DOE LCOE numerical modeling Performance Tidal Wave To normalize competing claims of LCOE, DOE has developed-for its own use-a standardized cost and performance data reporting process to facilitate uniform calculation of LCOE from MHK device developers. This standardization framework is only the first version in what is anticipated

229

High-Current Accelerators  

E-Print Network [OSTI]

F i g . 13 F i g . 14 A 48 ACCELERATOR F i g . 25 F i g . 16supply. Extrapolation of accelerator energy and current9 . A-48 high-current accelerator, low-velocity end. Fig.

Lawrence, Ernest O.

1955-01-01T23:59:59.000Z

230

Evaluation of Diesel Engine Cold-Start Performance: Definition of a Grading System To Assess the Impact of Fuel  

Science Journals Connector (OSTI)

In general, the term biodiesel covers a variety of materials made from vegetable oils or animal fats. ... Thus, with optimized settings (Figure 7), it is possible to obtain the same performance for conventional diesels and blends with biodiesel. ... Krfer, T.; Lamping, M.; Rohs, H.; Adolph, D.; Pischinger, S.; Wix, K.The future power density of HSDI diesel engines with lowest engine out emissionsA key element for upcoming CO2 demands. ...

L. Starck; H. Perrin; B. Walter; N. Jeuland

2011-09-22T23:59:59.000Z

231

Current Research Portfolio  

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

Resources News & Events Expand News & Events Skip navigation links Smart Grid Demand Response Energy Efficiency Emerging Technologies Current Research Portfolio Behavior Based...

232

Ion current interface.  

E-Print Network [OSTI]

?? Abstract Abstract The reason to measure the ion current in a combustion engine is to extract combustion parameters in order to achieve closed loop (more)

Johansson, Morgan

2005-01-01T23:59:59.000Z

233

RF current sensor  

DOE Patents [OSTI]

An RF sensor having a novel current sensing probe and a voltage sensing probe to measure voltage and current. The current sensor is disposed in a transmission line to link all of the flux generated by the flowing current in order to obtain an accurate measurement. The voltage sensor is a flat plate which operates as a capacitive plate to sense voltage on a center conductor of the transmission line, in which the measured voltage is obtained across a resistance leg of a R-C differentiator circuit formed by the characteristic impedance of a connecting transmission line and a capacitance of the plate, which is positioned proximal to the center conductor.

Moore, James A. (Powell, TN); Sparks, Dennis O. (Maryville, TN)

1998-11-10T23:59:59.000Z

234

Polarized electron beams at milliampere average current  

SciTech Connect (OSTI)

This contribution describes some of the challenges associated with developing a polarized electron source capable of uninterrupted days-long operation at milliAmpere average beam current with polarization greater than 80%. Challenges will be presented in the context of assessing the required level of extrapolation beyond the performance of today's CEBAF polarized source operating at ~ 200 uA average current. Estimates of performance at higher current will be based on hours-long demonstrations at 1 and 4 mA. Particular attention will be paid to beam-related lifetime-limiting mechanisms, and strategies to construct a photogun that operate reliably at bias voltage > 350kV.

Poelker, Matthew [JLAB

2013-11-01T23:59:59.000Z

235

Current status of Japanese detectors  

E-Print Network [OSTI]

Current status of TAMA and CLIO detectors in Japan is reported in this article. These two interferometric gravitational-wave detectors are being developed for the large cryogenic gravitational wave telescope (LCGT) which is a future plan for detecting gravitational wave signals at least once per year. TAMA300 is being upgraded to improve the sensitivity in low frequency region after the last observation experiment in 2004. To reduce the seismic noises, we are installing new seismic isolation system, which is called TAMA Seismic Attenuation System, for the four test masses. We confirmed stable mass locks of a cavity and improvements of length and angular fluctuations by using two SASs. We are currently optimizing the performance of the third and fourth SASs. We continue TAMA300 operation and R&D studies for LCGT. Next data taking in the summer of 2007 is planned. CLIO is a 100-m baseline length prototype detector for LCGT to investigate interferometer performance in cryogenic condition. The key features of CLIO are that it locates Kamioka underground site for low seismic noise level, and adopts cryogenic Sapphire mirrors for low thermal noise level. The first operation of the cryogenic interferometer was successfully demonstrated in February of 2006. Current sensitivity at room temperature is close to the target sensitivity within a factor of 4. Several observation experiments at room temperature have been done. Once the displacement noise reaches at thermal noise level of room temperature, its improvement by cooling test mass mirrors should be demonstrated.

Daisuke Tatsumi; Ryutaro Takahashi; Koji Arai; Noriyasu Nakagawa; Kazuhiro Agatsuma; Toshitaka Yamazaki; Mitsuhiro Fukushima; Masa-Katsu Fujimoto; Akiteru Takamori; Alessandro Bertolini; Virginio Sannibale; Riccardo DeSalvo; Szabolcs Marka; Masaki Ando; Kimio Tsubono; Tomomi Akutsu; Kazuhiro Yamamoto; Hideki Ishitsuka; Takashi Uchiyama; Shinji Miyoki; Masatake Ohashi; Kazuaki Kuroda; Norichika Awaya; Nobuyuki Kanda; Akito Araya; Souichi Telada; Takayuki Tomaru; Tomiyoshi Haruyama; Akira Yamamoto; Nobuaki Sato; Toshitaka Suzuki; Takakazu Shintomi

2007-04-22T23:59:59.000Z

236

Ultracapacitor current collector  

DOE Patents [OSTI]

An ultracapacitor having two solid, nonporous current collectors, two porous electrodes separating the collectors, a porous separator between the electrodes and an electrolyte occupying the pores in the electrodes and separator. At least one of the current collectors comprises a conductive metal substrate coated with a metal nitride, carbide or boride coating.

Jerabek, Elihu Calfin (Glenmont, NY); Mikkor, Mati (Ann Arbor, MI)

2001-10-16T23:59:59.000Z

237

Tokamak halo currents  

SciTech Connect (OSTI)

A halo current flows for part of its path through the plasma edge and for part through the chamber walls and can be as large as tenths of the plasma current. The primary interest in halo currents is the large force that they can exert on machine components. Two discordant constraints are central to the theory: (1) Halo currents must produce the magnetic field distribution required to maintain plasma force balancea distribution that depends on the two angular coordinates of a torus. (2) Halo currents must flow along the magnetic field lines in the plasma, which implies a dependence on a linear combination of the two angular coordinatesonly one angular coordinate is free. The physics basis of these two constraints is explained as is their application to the calculation of the properties of halo currents, such as their broad toroidal spectrum. Existing codes could be used to (1) provide detailed comparisons with experiments to validate that the critical elements of physics are adequately included, (2) allow more complete predictions for future machines such as ITER, and (3) design shunts and resistive elements to ensure halo currents follow paths that are the least damaging to the machine. The physics of halo currents implies that it may be possible to feedback stabilize resistive wall modes beyond the ideal-wall limit.

Boozer, Allen H. [Department of Applied Physics and Applied Mathematics Columbia University, New York, New York 10027 (United States)] [Department of Applied Physics and Applied Mathematics Columbia University, New York, New York 10027 (United States)

2013-08-15T23:59:59.000Z

238

Voltage controlled current source  

DOE Patents [OSTI]

A seven decade, voltage controlled current source is described for use in testing intermediate range nuclear instruments that covers the entire test current range of from 10 picoamperes to 100 microamperes. High accuracy is obtained throughout the entire seven decades of output current with circuitry that includes a coordinated switching scheme responsive to the input signal from a hybrid computer to control the input voltage to an antilog amplifier, and to selectively connect a resistance to the antilog amplifier output to provide a continuous output current source as a function of a preset range of input voltage. An operator controlled switch provides current adjustment for operation in either a real-time simulation test mode or a time response test mode.

Casne, Gregory M. (Pittsburgh, PA)

1992-01-01T23:59:59.000Z

239

Modeling and Simulation of Resistive Superconducting Fault-Current Limiters  

Science Journals Connector (OSTI)

Superconducting fault-current limiters (SFCL) offer ideal performance in electrical ... simulation model for a novel resistive type superconducting fault-current limiter is proposed. This model includes the elect...

S. Nemdili; S. Belkhiat

2012-10-01T23:59:59.000Z

240

Current Journals Athena Computers  

E-Print Network [OSTI]

Computers Reference Collection Restrooms-outside of library Scanner, Copier, Public Printer Special REFERENCE STUDY SPACE PUBLIC COMPUTERS CURRENT JOURNALS SCANNER, COPIER, PUBLIC PRINTER, ATHENA COMPUTER & Technology Stations Media Room Music Software Stations New Books and Scores Oversize Collection Public

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


241

Accelerated Currents in Superconductors  

Science Journals Connector (OSTI)

It is shown that the ratio of the accelerated currents of energy and matter induced in a superconductor by a long-wavelength electric field is equal to the chemical potential of the system.

Vinay Ambegaokar and Gerald Rickayzen

1966-02-04T23:59:59.000Z

242

Current Physics Information  

Science Journals Connector (OSTI)

...MARKS, R.H., MAY CONV NAT MICR AS ( 1971 ). ROBERTS, L.G., AFIPS C P 36 : 543 ( 1970 ). ZIMAN, J.M., INFORMATION, COMMUNICATION, KNOWLEDGE, NATURE 224 : 318 ( 1969 ). Current physics information. | A new concept in science...

H. William Koch

1971-11-26T23:59:59.000Z

243

Geothermal Energy: Current abstracts  

SciTech Connect (OSTI)

This bulletin announces the current worldwide information available on the technologies required for economic recovery of geothermal energy and its use as direct heat or for electric power production. (ACR)

Ringe, A.C. (ed.)

1988-02-01T23:59:59.000Z

244

Beam current sensor  

DOE Patents [OSTI]

A current sensor for measuring the dc component of a beam of charged particles employs a superconducting pick-up loop probe, with twisted superconducting leads in combination with a Superconducting Quantum Interference Device (SQUID) detector. The pick-up probe is in the form of a single-turn loop, or a cylindrical toroid, through which the beam is directed and within which a first magnetic flux is excluded by the Meisner effect. The SQUID detector acts as a flux-to-voltage converter in providing a current to the pick-up loop so as to establish a second magnetic flux within the electrode which nulls out the first magnetic flux. A feedback voltage within the SQUID detector represents the beam current of the particles which transit the pick-up loop. Meisner effect currents prevent changes in the magnetic field within the toroidal pick-up loop and produce a current signal independent of the beam's cross-section and its position within the toroid, while the combination of superconducting elements provides current measurement sensitivities in the nano-ampere range.

Kuchnir, M.; Mills, F.E.

1984-09-28T23:59:59.000Z

245

Beam current sensor  

DOE Patents [OSTI]

A current sensor for measuring the DC component of a beam of charged particles employs a superconducting pick-up loop probe, with twisted superconducting leads in combination with a Superconducting Quantum Interference Device (SQUID) detector. The pick-up probe is in the form of a single-turn loop, or a cylindrical toroid, through which the beam is directed and within which a first magnetic flux is excluded by the Meisner effect. The SQUID detector acts as a flux-to-voltage converter in providing a current to the pick-up loop so as to establish a second magnetic flux within the electrode which nulls out the first magnetic flux. A feedback voltage within the SQUID detector represents the beam current of the particles which transit the pick-up loop. Meisner effect currents prevent changes in the magnetic field within the toroidal pick-up loop and produce a current signal independent of the beam's cross-section and its position within the toroid, while the combination of superconducting elements provides current measurement sensitivites in the nano-ampere range.

Kuchnir, Moyses (Elmhurst, IL); Mills, Frederick E. (Elburn, IL)

1987-01-01T23:59:59.000Z

246

Performance Monitoring  

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

Optimization Performance Monitoring Performance Monitoring A redirector page has been set up without anywhere to redirect to. Last edited: 2014-08-25 14:37:27...

247

Optical Current Sensors for Electric Power Grid Modernization  

Science Journals Connector (OSTI)

Optical current transducers will advance the modernization of the power grid, because of the economic cost, environmental cost, safety, reliability, and metrology performance...

Rose, Allen H; Blake, Jim

248

2014-12-05 EM Current Project Performance.xls  

Office of Environmental Management (EM)

330,200,000 9302011 1 330,200,000 12312014 Hanford Site SR-0014C.C3.3 Saltstone Disposal Unit 6 (SDU6) CD-3 143,166,420 11302018 0 Savannah River Site RL-0041.C1...

249

Comparative study of energy saving light sources  

Science Journals Connector (OSTI)

Techno-economic performance comparison of compact fluorescent lamps (CFL) with light emitting diodes (LED), electrode less fluorescent lamps (EEFL), fluorescent tubes, incandescent bulbs, photovoltaic (PV) and fiber optic lighting systems was carried out in view of worsening power and energy crisis in Pakistan. Literature survey showed 23W CFL, 21W EEFL, 18W fluorescent tube or 15W LED lamps emit almost same quantity of luminous flux (lumens) as a standard 100W incandescent lamp. All inclusive, operational costs of LED lamps were found 1.21, 1.62. 1.69, 6.46, 19.90 and 21.04 times lesser than fluorescent tubes, CFL, EEFL, incandescent bulbs, fiber optic solar lighting and PV systems, respectively. However, tubes, LED, CFL and EEFL lamps worsen electric power quality of low voltage networks due to high current harmonic distortions (THD) and poor power factors (PF). Fluorescent lamps emit UV and pollute environment by mercury and phosphors when broken or at end of their life cycle. Energy consumption, bio-effects, and environmental concerns prefer LED lamps over phosphor based lamps but power quality considerations prefer EEFL. CFL and EEFL manufacturers claim operating temperatures in range of ?20CLED lamps may be five to ten times higher that high THD and low PF lamps. Choice of a lamp depends upon its current THD, PF, life span, energy consumption, efficiency, efficacy, color rendering index (CRI) and associated physical effects. This work proposes manufacturing and user level innovations to get rid of low PF problems. Keeping in view downside of phosphor based lamps our research concludes widespread adoption of LED lamps. Government and commercial buildings may consider full spectrum hybrid thermal photovoltaic and solar fiber optic illumination systems.

N. Khan; N. Abas

2011-01-01T23:59:59.000Z

250

Math Library Performance  

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

Math Library Performance Math Library Performance Math Library Performance Fully optimizing a given application's performance often requires a deep understand of the source, an accurate profile for a representative run and the ability to have changes to the source accepted upstream. However, in many cases, significant performance gains can be achieved by simply optimizing the code over the matrix of possible compilers, compiler options and libraries available on a given machine. Here, we explore the performance variability of common materials science applications at NERSC with respect to the compilers and libraries available on Edison, NERSC's Cray XC30. NERSC currently supports compilers from three different vendors on the XC30 system, Edison: Intel, GNU and Cray. Materials science applications

251

INNOVATIVE EDDY CURRENT PROBE FOR MICRO DEFECTS  

SciTech Connect (OSTI)

This paper reports the development of an innovative eddy current (EC) probe, and its application to micro-defects on the root of the Friction Stir Welding (FSW). The new EC probe presents innovative concept issues, allowing 3D induced current in the material, and a lift-off independence. Validation experiments were performed on aluminium alloys processed by FSW. The results clearly show that the new EC probe is able to detect and sizing surface defects about 60 microns depth.

Santos, Telmo G.; Vilaca, Pedro; Quintino, Luisa [IDMEC, Av. Rovisco Pais, 1049-001 Lisbon (Portugal); Santos, Jorge dos [GKSS, Max-Planck-Street 1, D-21502 Geesthacht (Germany); Rosado, Luis [IST, UTL, Av. Rovisco Pais, 1049-001 Lisbon (Portugal)

2010-02-22T23:59:59.000Z

252

Fault Current Limiters  

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

Fault Fault Current Limiters Superconducting & Solid-state Power Equipment Office of Electricity Delivery and Energy Reliability www.oe.energy.gov Office of Electricity Delivery and Energy Reliability, OE-1 U.S. Department of Energy - 1000 Independence Avenue, SW - Washington, DC 20585 Plugging America Into the Future of Power What are FCLs? A fault is an unintentional short circuit, or partial short-circuit, in an electric circuit. A variety of factors such as lightning, downed power lines, or crossed power lines cause faults. During a fault, excessive current-called fault current- flows through the electrical system often resulting in a failure of one section of that system by causing a

253

Counter Current Multiplier Mechanism  

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

Counter Current Multiplier Mechanism Counter Current Multiplier Mechanism Name: Stephen Location: N/A Country: N/A Date: N/A Question: Can you please explain to me the counter-current multiplier mechanism. I understand that cholride and sodium ions are filtered out of the ascending loop of Henle into the interstial fluid, however, I'm not sure exactly what happens from there and how this effects osmotic pressure gradients in the nephron. Any help would be greatly appriciated. Replies: This mechanism is very complex when it comes to writing a response. You have to have a strong background in osmotic pressure understanding and the anatomy of the kidney. It involves the cortex, outer and inner medula in relationship to the vasa recta, interstitial fluids at two points, the loop of Henle and the collecting duct. The size of the tubes and the position in relations to the cortex and medulla is an essential part. I can suggest some references.

254

Hydrogen Delivery- Current Technology  

Broader source: Energy.gov [DOE]

Hydrogen is transported from the point of production to the point of use via pipeline, over the road in cryogenic liquid trucks or gaseous tube trailers, or by rail or barge. Read on to learn more about current hydrogen delivery and storage technologies.

255

Current address: Samuel Johnson  

E-Print Network [OSTI]

CV: E-mail : Homepage: Current address: Samuel Johnson samuel.johnson@imperial.ac.uk www. #12;Submitted work 1. The meaning of niche: Cause or consequence of food-web structure?, S. Johnson, V learning, S. Johnson, J. Marro, and J.J. Torres, PLoS ONE 8(1): e50276 (2013) 3. Enhancing neural network

Johnson, Samuel

256

Clean Cities: Current Financial Opportunities  

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

Financial Opportunities Financial Opportunities Printable Version Share this resource Send a link to Clean Cities: Current Financial Opportunities to someone by E-mail Share Clean Cities: Current Financial Opportunities on Facebook Tweet about Clean Cities: Current Financial Opportunities on Twitter Bookmark Clean Cities: Current Financial Opportunities on Google Bookmark Clean Cities: Current Financial Opportunities on Delicious Rank Clean Cities: Current Financial Opportunities on Digg Find More places to share Clean Cities: Current Financial Opportunities on AddThis.com... Current Opportunities Related Opportunities Funded Projects Current Financial Opportunities Current transportation-related financial opportunities, including Clean Cities funding opportunity announcements (FOAs) issued by the U.S.

257

FCT Hydrogen Production: Current Technology  

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

Current Technology to Current Technology to someone by E-mail Share FCT Hydrogen Production: Current Technology on Facebook Tweet about FCT Hydrogen Production: Current Technology on Twitter Bookmark FCT Hydrogen Production: Current Technology on Google Bookmark FCT Hydrogen Production: Current Technology on Delicious Rank FCT Hydrogen Production: Current Technology on Digg Find More places to share FCT Hydrogen Production: Current Technology on AddThis.com... Home Basics Current Technology Thermal Processes Electrolytic Processes Photolytic Processes R&D Activities Quick Links Hydrogen Delivery Hydrogen Storage Fuel Cells Technology Validation Manufacturing Codes & Standards Education Systems Analysis Contacts Current Technology The development of clean, sustainable, and cost-competitive hydrogen

258

Performative architecture  

E-Print Network [OSTI]

The following thesis explores two central hypotheses. On the one hand it introduces the idea of performative architecture (performance in design), and has done so with the desire to contribute directly to the expansion of ...

Araya, Sergio (Sergio Alejandro)

2011-01-01T23:59:59.000Z

259

Contractor Past Performance Information  

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

Chapter 42.15 (DEC 2010) - Attachment A 2 Blocks 7, 9, 11, 12: Contracting Officer, Contract Completion Date, Awarded Value, and Current Contract Dollar Value are up to date. [Note: When auto-registration is available and used, the Contract Completion Date, Awarded Value, and Current Contract Dollar Value will be pre- populated from FPDS-NG.] Contract Completion Date and Awarded Value should include all option periods, even if the options have not yet been exercised. Block 15: Subcontractors performing 25% or more or a critical aspect of the work are identified. This block is not a place to assess subcontractor performance. Due to privity of contract, the Government can only write a performance assessment for a prime Contractor. Block 17: Contract Effort Description is

260

CMVRTC: Current Research  

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

Current reseach projects Current reseach projects Wireless Roadside Inspection Field Operational Test (WRI-FOT) Brake Defect Causation and Abatement Study Infrared-Based Screening System Overweight Vehicle Defect Study WRI-fot WRI-FOT roadmap In Fall of 2012, FMCSA kicked offed the WRI-FOT Program to validate technologies and methodologies that can improve safety through inspections using wireless technologies that convey real-time identification of commercial motor vehicles (CMV), drivers, and carriers, as well as information about the status of the vehicles and their drivers. It is believed that these inspections will (1) increase CMV safety, (2) increase inspection efficiency, (3) improve inspection effectiveness by reducing the probability of drivers bypassing CMV inspection stations and

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


261

Communicating Building Energy Performance  

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

Communicating Building Energy Performance Communicating Building Energy Performance Speaker(s): William Bordass Date: August 26, 2008 - 12:00pm Location: 90-3075 Seminar Host/Point of Contact: Paul Mathew The heightened interest in building energy performance has exposed problems with reporting and benchmarking. Established conventions may no longer suit current needs, and new complications are emerging as national and corporate reporting (e.g. for carbon accounting and trading) begin to impact on the certification and labelling of building energy performance. If we are to achieve genuinely low-energy and carbon buildings, we need to get much better at reporting and benchmarking our intentions and outcomes, and particularly making performance visible and communicating it to all the people concerned. In design, this could help us to reduce the persistent

262

Contracting Polymer with Current  

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

Contracting Polymer with Current Contracting Polymer with Current Name: Ian Status: student Grade: 9-12 Location: PA Country: USA Date: Summer 2011 Question: Hello and thank you in advance. I have previously read of a material ( a kind of "rubber") that contracts when an electric current is applied. My question is what is this material, how does it work/what is it made of? Thank you very much. Replies: Hi Ian, I believe the material you are referring to is a kind of piezoelectric rubber. Piezoelectric materials (usually they are special types of ceramics or crystals) produce an electrical voltage when compressed of otherwise subjected to stress. They also do the opposite... they slightly expand or contract when a voltage is applied. But the amount they expand or contract is very small indeed. For example, one square meter of the recently discovered piezoelectric rubber materials typically contracts a mere 100 picometers for ever applied volt. Translated into everyday measurements, this means that if you apply a voltage of 1 Volt to a one foot long piece of this rubber, it will only contract less than half a billionth of an inch! Applying 100 volts will cause it to contract just under 50 billionths of an inch!

263

Guiding Market Introduction of High-Performance SSL Products...  

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

Program Fact Sheet guidingmarketfactsheetsept2013.pdf More Documents & Publications LED T8 Replacement Lamps DOE Lighting Program Update: LED Validation Activities Solid State...

264

High-performance LED street lighting using microlens arrays  

Science Journals Connector (OSTI)

An efficient LED lamp that illuminates the street with high quality is presented. The luminaire shows high optical efficiency, high optical utilization factor, low glare, and...

Lee, Xuan-Hao; Moreno, Ivan; Sun, Ching-Cherng

2013-01-01T23:59:59.000Z

265

Polarized electron beams at milliampere average current  

SciTech Connect (OSTI)

This contribution describes some of the challenges associated with developing a polarized electron source capable of uninterrupted days-long operation at milliAmpere average beam current with polarization greater than 80%. Challenges will be presented in the context of assessing the required level of extrapolation beyond the performance of todays CEBAF polarized source operating at ? 200 uA average current. Estimates of performance at higher current will be based on hours-long demonstrations at 1 and 4 mA. Particular attention will be paid to beam-related lifetime-limiting mechanisms, and strategies to construct a photogun that operate reliably at bias voltage > 350kV.

Poelker, M. [Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States)

2013-11-07T23:59:59.000Z

266

Currents, Berkeley Lab's Biweekly Newspaper  

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

Currents Index A-Z Index Search Phone Book Comments Ernest Orlando Lawrence Berkeley National Laboratory Search Currents Back Issues (1994 to present) Search Lab science articles...

267

Current HMS Observations - Hanford Site  

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

Station Real Time Met Data from Around the Site Current HMS Observations Daily HMS Extremes in Met Data Met and Climate Data Summary Products Contacts Hours Current NWS...

268

Performance Characterization  

Broader source: Energy.gov [DOE]

Performance characterization efforts within the SunShot Systems Integration activities focus on collaborations with U.S. solar companies to:

269

HVAC Installed Performance  

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

HVAC Installed Performance HVAC Installed Performance ESI, Tim Hanes Context * The building envelope has historically been the focus in residential homes. * The largest consumer of energy in residential homes is typically the HVAC system. * Testing the performance of the HVAC system has not been pursued to its full potential. Technical Approach * Currently very little performance testing is being done to the HVAC system. * The only way to know if a HVAC system is operating correctly is to measure the Btu/h. * This should be done at the equipment and at the the system. Recommended Guidance * Training of HVAC technicians, installers, and salespeople is a must. * If only the technician is trained than implementing the change will not happen. * Public awareness of proper installation and its

270

Tungsten and tungsten-alloy powder metallurgy: Powder production and applications-excluding lamps. November 1971-July 1989 (Citations from the US Patent data base). Report for November 1971-July 1989  

SciTech Connect (OSTI)

This bibliography contains citations of selected patents concerning the preparation of metallic and ceramic powders of tungsten and tungsten alloys including various applications of these materials. The hydrogen reduction of tungsten compounds together with alloying-element compounds produce forms with characteristics of high density, hardness, wear resistance, high melting points, and abrasiveness. Topics include production of various cathodes, heaters, filament wires, electrical contacts, acoustic absorbers, high-density sheets and coatings, hard penetrators, and tungsten carbide and metallized ceramics. Tungsten halogen lamps are examined in a separate bibliography. (Contains 60 citations fully indexed and including a title list.)

Not Available

1989-10-01T23:59:59.000Z

271

Argonne Transportation Current News  

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

Current News November 21, 2013 -- Pixelligent Technologies Working with Argonne to Develop Nanoadditives under DOE SBIR Grant November 4, 2013 -- New GREET Model Released October 25, 2013 -- Argonne Creates IdleBox Toolkit for DOE's Clean Cities Initiative to Help Reduce Vehicle Idling September 23, 2013 -- New VISION Model Released for Estimating Potential Energy Use, Oil Use and Carbon Emission Impacts September 17, 2013 -- Water Assessment for Transportation Energy Resources (WATER) Tool Released September 9, 2013 -- Dileep Singh to Receive Prestigious Lee Hsun Award July 17, 2013 -- Summer 2013 TransForum now available July 10, 2013 -- Argonne Wins Four R&D 100 Awards March 23, 2013 -- White House Women's Leadership Summit on Climate and Energy recognizes Argonne scientists

272

Current Concepts: Flavivirus Encephalitis  

Science Journals Connector (OSTI)

..., which has caused encephalitis outbreaks in Brazil, and Murray Valley encephalitis virus in Australia, New Guinea, and New Zealand. Kunjin virus, which also circulates in Australia, recently has been reclassified as a subtype of West Nile virus. In terms of numbers, the most important member of the... West Nile virus is one member of the genus flavivirus, which includes mosquito-borne viruses that cause similar disease patterns in much of the world. The other members of this serogroup include the St. Louis encephalitis virus, the Murray Valley virus, and the Japanese encephalitis virus (which causes thousands of deaths each year in Asia). This review summarizes what is currently known about flavivirus encephalitis, with emphasis on the pathogenesis of West Nile virus infections.

Solomon T.

2004-07-22T23:59:59.000Z

273

Plasma-Current Multipole Experiments  

Science Journals Connector (OSTI)

The magnetohydrodynamic equilibrium and stability of the plasma-current multipole configuration have been demonstrated experimentally.

T. Ohkawa and H. G. Voorhies

1969-06-16T23:59:59.000Z

274

FCT Hydrogen Delivery: Current Technology  

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

Current Technology to someone Current Technology to someone by E-mail Share FCT Hydrogen Delivery: Current Technology on Facebook Tweet about FCT Hydrogen Delivery: Current Technology on Twitter Bookmark FCT Hydrogen Delivery: Current Technology on Google Bookmark FCT Hydrogen Delivery: Current Technology on Delicious Rank FCT Hydrogen Delivery: Current Technology on Digg Find More places to share FCT Hydrogen Delivery: Current Technology on AddThis.com... Home Basics Current Technology R&D Activities Quick Links Hydrogen Production Hydrogen Storage Fuel Cells Technology Validation Manufacturing Codes & Standards Education Systems Analysis Contacts Current Technology Today, hydrogen is transported from the point of production to the point of use via pipeline, over the road in cryogenic liquid trucks or gaseous tube

275

FCT Hydrogen Storage: Current Technology  

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

Current Technology to someone Current Technology to someone by E-mail Share FCT Hydrogen Storage: Current Technology on Facebook Tweet about FCT Hydrogen Storage: Current Technology on Twitter Bookmark FCT Hydrogen Storage: Current Technology on Google Bookmark FCT Hydrogen Storage: Current Technology on Delicious Rank FCT Hydrogen Storage: Current Technology on Digg Find More places to share FCT Hydrogen Storage: Current Technology on AddThis.com... Home Basics Current Technology Gaseous and Liquid Hydrogen Storage Materials-Based Hydrogen Storage Hydrogen Storage Challenges Status of Hydrogen Storage Technologies DOE R&D Activities Quick Links Hydrogen Production Hydrogen Delivery Fuel Cells Technology Validation Manufacturing Codes & Standards Education Systems Analysis Contacts Current Technology

276

Commercial Performance  

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

Commercial Performance Commercial Performance Objectives: To review the market potential for improvements in commercial building glazings, quantify the energy savings potentials, explore potential design solutions, and develop guidelines and tools for building designers so that systems are specified and used in an optimal manner. A special emphasis is placed on the daylighting performance of glazings in commercial buildings since lighting is the single largest energy end use and daylighting can improve both visual performance and the quality of the indoor space as well as saving energy. Technical Approach: This project has two major complementary elements. The first is the exploration and assessment of glazing performance in commercial buildings leading to development of design strategies that reduce unnecessary energy use. The final step is creating design guides and tools that make this design knowledge accessible to practitioners, typically carried out in partnership with others. Although the emphasis is energy impacts, e.g. annual energy use, the performance issues addressed in the guides and tools include all that impact the final glazing selection process, e.g. appearance, glare. The second element is an exploration of daylighting strategies for commercial buildings since lighting energy use is the major energy end use in most buildings. This work develops and evaluates new daylighting devices and designs, assesses performance in commercial buildings, and demonstrates system performance using test cells, test rooms and case study buildings. All energy-related aspects of the design solutions, as well as other critical performance issues, are addressed in this work. Results of this work are integrated into the guides and tools described above. Much of this work has been co-supported by utilities and has been carried on in conjunction with participants in an International Energy Agency Daylighting Task.

277

INTEGRATED WATER TREATMENT SYSTEM PERFORMANCE EVALUATION  

SciTech Connect (OSTI)

This document describes the results of an evaluation of the current Integrated Water Treatment System (IWTS) operation against design performance and a determination of short term and long term actions recommended to sustain IWTS performance.

SEXTON RA; MEEUWSEN WE

2009-03-12T23:59:59.000Z

278

Corporate Analysis of DOE Safety Performance | Department of...  

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

Analysis of DOE Safety Performance Current Safety Performance Trends The Office of Environment, Health, Safety and Security, Office of Analysis provides analysis of Department of...

279

Oscillatory nonohomic current drive for maintaining a plasma current  

DOE Patents [OSTI]

Apparatus and methods are described for maintaining a plasma current with an oscillatory nonohmic current drive. Each cycle of operation has a generation period in which current driving energy is applied to the plasma, and a relaxation period in which current driving energy is removed. Plasma parameters, such as plasma temperature or plasma average ionic charge state, are modified during the generation period so as to oscillate plasma resistivity in synchronism with the application of current driving energy. The invention improves overall current drive efficiencies.

Fisch, N.J.

1984-01-01T23:59:59.000Z

280

Oscillatory nonhmic current drive for maintaining a plasma current  

DOE Patents [OSTI]

Apparatus and method of the invention maintain a plasma current with an oscillatory nonohmic current drive. Each cycle of operation has a generation period in which current driving energy is applied to the plasma, and a relaxation period in which current driving energy is removed. Plasma parameters, such as plasma temperature or plasma average ionic charge state, are modified during the generation period so as to oscillate plasma resistivity in synchronism with the application of current driving energy. The invention improves overall current drive efficiencies.

Fisch, Nathaniel J. (Princeton, NJ)

1986-01-01T23:59:59.000Z

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


281

Performance Contracting  

E-Print Network [OSTI]

Performance Contracting ? A Resource for Energy Efficiency Projects Schneider Electric ? Buildings Business ? CATEE 2011 2 Top Challenges for Cities & Schools Tax Revenue Reductions Property values down, sales tax revenue down, etc Energy... issues and needs postponed Schneider Electric ? Buildings Business ? CATEE 2011 3 Performance Contracting can help? Tax Revenue Reductions Redirect funds already being spent on utilities Energy Price & Availability Issues Equip you with the tools...

Goodin, E.

2011-01-01T23:59:59.000Z

282

Current Annualized Request  

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

Organization Organization FY 2012 FY 2013 FY 2014 Current Annualized Request CR $ % National Security Weapons Activities* 7,214,834 7,557,342 7,868,409 +311,067 +4.1% Defense Nuclear Nonproliferation 2,300,950 2,409,930 2,140,142 -160,808 -7.0% Naval Reactors 1,080,000 1,086,610 1,246,134 +166,134 +15.4% Office of the Administrator 410,000 412,509 397,784 -12,216 -3.0% Total, National Nuclear Security Administration 11,005,784 11,466,391 11,652,469 +304,177 +2.8% Energy and Environment Energy Efficiency and Renewable Energy 1,780,548 1,820,713 2,775,700 +995,152 +55.9% Electricity Delivery and Energy Reliability 136,178 139,954 169,015 +32,837 +24.1% Fossil Energy 554,806 714,033 637,975 +83,169 +15.0% Nuclear Energy 853,816 863,996 735,460 -118,356 -13.9% Race to the Top for Energy Efficiency and Grid Modernization

283

Stray current interference control for HVDC earth currents  

SciTech Connect (OSTI)

High-voltage direct current (HVDC) transmission lines exist around the world, with several in the US. When one conductor must be taken out of operation (in case of emergency), the earth may be used as an alternate conductor. The earth current may be accumulated on and discharged from underground metallic structures that cross the voltage gradient created by the current. Test results on two lines showed that stray current interference is not a major problem if mitigated properly.

Fitzgerald, J.H. III [PSG Corrosion Engineering/Corrpro Cos., Detroit, MI (United States); Kroon, D.H. [Corrpro Companies Inc., Spring, TX (United States)

1995-06-01T23:59:59.000Z

284

Computing plasma focus pinch current from total current measurement  

Science Journals Connector (OSTI)

The total current I total waveform in a plasma focus discharge is the most commonly measured quantity contrasting with the difficult measurement of I pinch . However yield laws should be scaled to focus pinch current I pinch rather than the peak I total . This paper describes how I pinch may be computed from the I total trace by fitting a computed current trace to the measured current trace using the Lee model. The method is applied to an experiment in which both the I total trace and the plasma sheath current trace were measured. The result shows good agreement between the values of computed and measured I pinch .

S. Lee; S. H. Saw; P. C. K. Lee; R. S. Rawat; H. Schmidt

2008-01-01T23:59:59.000Z

285

Heat Transfer and Convection Currents  

Science Journals Connector (OSTI)

...October 1965 research-article Heat Transfer and Convection Currents D. C...convection in a medium with internal heat generation is discussed semi-quantitatively...States English United Kingdom 1966 Heat transfer and convection currents Tozer D...

1965-01-01T23:59:59.000Z

286

Predictions of fast wave heating, current drive, and current drive antenna arrays for advanced tokamaks  

SciTech Connect (OSTI)

The objective of the advanced tokamak program is to optimize plasma performance leading to a compact tokamak reactor through active, steady state control of the current profile using non-inductive current drive and profile control. To achieve these objectives requires compatibility and flexibility in the use of available heating and current drive systems--ion cyclotron radio frequency (ICRF), neutral beams, and lower hybrid. For any advanced tokamak, the following are important challenges to effective use of fast waves in various roles of direct electron heating, minority ion heating, and current drive: (1) to employ the heating and current drive systems to give self-consistent pressure and current profiles leading to the desired advanced tokamak operating modes; (2) to minimize absorption of the fast waves by parasitic resonances, which limit current drive; (3) to optimize and control the spectrum of fast waves launched by the antenna array for the required mix of simultaneous heating and current drive. The authors have addressed these issues using theoretical and computational tools developed at a number of institutions by benchmarking the computations against available experimental data and applying them to the specific case of TPX.

Batchelor, D.B.; Baity, F.W.; Carter, M.D. [and others

1994-12-31T23:59:59.000Z

287

Current Awards | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

National Laser User Facilities Program Current Awards Current Awards National Laser Users' Facility Grant Program Current Awards Under Construction...

288

Current Awards | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Stewardship Science Academic Alliances Program Current Awards Current Awards Stewardship Science Academic Alliances (SSAA) Program Current Awards Under Construction...

289

Performance Variability  

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

Variability Variability of Highly Parallel Architectures William T.C. Kramer 1 and Clint Ryan 2 1 Department of Computing Sciences, University of California at Berkeley and the National Energy Research Scientific Computing Center, Lawrence Berkeley National Laboratory 2 Department of Computing Sciences, University of California at Berkeley Abstract. The design and evaluation of high performance computers has concentrated on increasing computational speed for applications. This performance is often measured on a well configured dedicated sys- tem to show the best case. In the real environment, resources are not always dedicated to a single task, and systems run tasks that may influ- ence each other, so run times vary, sometimes to an unreasonably large extent. This paper explores the amount of variation seen across four large distributed memory systems in a systematic manner. It then

290

2003 Mercury Computer Systems, Inc. Session 5: Current &  

E-Print Network [OSTI]

© 2003 Mercury Computer Systems, Inc. Session 5: Current & Emerging Standards Session 5: Current & Emerging Standards Craig Lund, Chief Technology Officer Mercury Computer Systems, Inc. High Performance Embedded Computing (HPEC) Conference September 2003 #12;© 2003 Mercury Computer Systems, Inc. Agenda

Kepner, Jeremy

291

Fault current limiter and alternating current circuit breaker  

DOE Patents [OSTI]

A solid-state circuit breaker and current limiter are disclosed for a load served by an alternating current source having a source impedance, the solid-state circuit breaker and current limiter comprising a thyristor bridge interposed between the alternating current source and the load, the thyristor bridge having four thyristor legs and four nodes, with a first node connected to the alternating current source, and a second node connected to the load. A coil is connected from a third node to a fourth node, the coil having an impedance of a value calculated to limit the current flowing therethrough to a predetermined value. Control means are connected to the thyristor legs for limiting the alternating current flow to the load under fault conditions to a predetermined level, and for gating the thyristor bridge under fault conditions to quickly reduce alternating current flowing therethrough to zero and thereafter to maintain the thyristor bridge in an electrically open condition preventing the alternating current from flowing therethrough for a predetermined period of time. 9 figs.

Boenig, H.J.

1998-03-10T23:59:59.000Z

292

Fault current limiter and alternating current circuit breaker  

SciTech Connect (OSTI)

A solid-state circuit breaker and current limiter for a load served by an alternating current source having a source impedance, the solid-state circuit breaker and current limiter comprising a thyristor bridge interposed between the alternating current source and the load, the thyristor bridge having four thyristor legs and four nodes, with a first node connected to the alternating current source, and a second node connected to the load. A coil is connected from a third node to a fourth node, the coil having an impedance of a value calculated to limit the current flowing therethrough to a predetermined value. Control means are connected to the thyristor legs for limiting the alternating current flow to the load under fault conditions to a predetermined level, and for gating the thyristor bridge under fault conditions to quickly reduce alternating current flowing therethrough to zero and thereafter to maintain the thyristor bridge in an electrically open condition preventing the alternating current from flowing therethrough for a predetermined period of time.

Boenig, Heinrich J. (Los Alamos, NM)

1998-01-01T23:59:59.000Z

293

Context for performance assessment  

SciTech Connect (OSTI)

In developing its recommendations on performance assessment for disposal of low-level radioactive waste, Scientific committee 87-3 of the National Council on Radiation Protection and Measurements (NCRP) has considered a number of topics that provide a context for the development of suitable approaches to performance assessment. This paper summarizes the Committee` discussions on these topics, including (1) the definition of low-level waste and its sources and properties, as they affect the variety of wastes that must be considered, (2) fundamental objectives and principles of radioactive waste disposal and their application to low-level waste, (3) current performance objectives for low-level waste disposal in the US, with particular emphasis on such unresolved issues of importance to performance assessment as the time frame for compliance, requirements for protection of groundwater and surface water, inclusion of doses from radon, demonstrating compliance with fixed performance objectives using highly uncertain model projections, and application of the principle that releases to the environment should be maintained as low as reasonably achievable (ALARA), (4) the role of active and passive institutional controls over disposal sites, (5) the role of the inadvertent human intruder in low-level waste disposal, (6) model validation and confidence in model outcomes, and (7) the concept of reasonable assurance of compliance.

Kocher, D.C.

1997-04-01T23:59:59.000Z

294

Particle Detector / Beam Current Transformer  

E-Print Network [OSTI]

Particle Detector / Beam Current Transformer Analysis December 8, 2009 Harold G. Kirk #12;ShotSignal,A.U. Proton Bunch Number Beam Current Transformer - 17011 0 2 4 6 8 0 2 4 6 8 10 12 14 16 18 20 Integrated Transformer Pump 187829 (au) Probe 196504 (au) Ratios: Beam Current 1.046 SF 1.019 2.9% difference #12;Shot

McDonald, Kirk

295

Current Jobs | Argonne National Laboratory  

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

Job Openings Argonne National Laboratory is currently hiring Co-op students in the following areas: Facilities Management and Services Division: The Facilities Management and...

296

ARM - Lesson Plans: Ocean Currents  

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

Ocean Currents Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global...

297

Current Month Summary - Hanford Site  

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

Station Real Time Met Data from Around the Site Current HMS Observations Daily HMS Extremes in Met Data Met and Climate Data Summary Products Historical Weather Charts Contacts...

298

The fundamental properties of current controlled current source amplifiers  

E-Print Network [OSTI]

as well as the computer simulation results. Other characteristics of the CCCS device are then discussed. II. Unit Gain CCCS Performance To experimentally characterize the performance of the unity gain CCCS amplifier, the circuit configuration of Figure... as well as the computer simulation results. Other characteristics of the CCCS device are then discussed. II. Unit Gain CCCS Performance To experimentally characterize the performance of the unity gain CCCS amplifier, the circuit configuration of Figure...

Terry, Michael Buford

2012-06-07T23:59:59.000Z

299

Studies on current distribution in electrochemical cells  

SciTech Connect (OSTI)

Three studies of electrochemical current distribution have been performed using potential-theory models and the boundary-element method (BEM). (1) The steady-state behavior of cells with nonuniform current density over a passivating anode is investigated. Current distributions calculated for a test cell, using the measured kinetic behavior of nickel in acid-nickel-sulfate solution, are compared to estimates from earlier models. Although current-density profiles determined by weight loss on a segmented rotating cylinder agreed satisfactorily with model calculations, the measured length of the passive zone exceeds the theoretical value. The model's applicability to anodic protection is demonstrated for a stainless-steel sulfuric-acid holding tank. (2) A model is established to describe the effects of attached bubbles on the potential drop at gas-evolving electrodes including: (1) ohmic obstruction within the electrolyte; (2) area masking on the electrode surface, which raises surface overpotential; and (3) decreased local supersaturation, which lowers the concentration overpotential. The model, based on pseudosteady-stae diffusion of dissolved gas within a concentration boundary layer, is applied to an example of hydrogen evolution in KOH solution. Under Tafel kinetics, the current distribution is nearly uniform over the unmasked electrode, and the increase in surface overpotential is the dominant effect. Outside the Tafel regime, the current density is strongly enhanced near the bubble, and the lowering of concentration overpotential is a major voltage effect. (3) A model of electrodeposition in the presence of diffusion-controlled leveling agents is developed. The evolution of groove profile during deposition of nickel from a Watts-type bath containing coumarin is predicted and compared to measurements reported in the literature.

Dukovic, J.O.; Tobias, C.W.

1986-08-01T23:59:59.000Z

300

Anomalous-viscosity current drive  

DOE Patents [OSTI]

The present invention relates to a method and apparatus for maintaining a steady-state current for magnetically confining the plasma in a toroidal magnetic confinement device using anomalous viscosity current drive. A second aspect of this invention relates to an apparatus and method for the start-up of a magnetically confined toroidal plasma.

Stix, T.H.; Ono, M.

1986-04-25T23:59:59.000Z

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


301

Current Drive in Recombining Plasma  

SciTech Connect (OSTI)

The Langevin equations describing the average collisional dynamics of suprathermal particles in nonstationary plasma remarkably admit an exact analytical solution in the case of recombining plasma. The current density produced by arbitrary particle fluxes is derived including the effect of charge recombination. Since recombination has the effect of lowering the charge density of the plasma, thus reducing the charged particle collisional frequencies, the evolution of the current density can be modified substantially compared to plasma with fixed charge density. The current drive efficiency is derived and optimized for discrete and continuous pulses of current, leading to the discovery of a nonzero "residual" current density that persists indefinitely under certain conditions, a feature not present in stationary plasmas.

P.F. Schmit and N.J. Fisch

2012-05-15T23:59:59.000Z

302

Current  

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

E"Bdv, 1 where magnetic helicity, a measure of the knottedness of the magnetic field lines, is defined as KA"Bdv p z , p is the poloidal flux passing...

303

Eddy current characterization of metal foams  

SciTech Connect (OSTI)

Cellular materials are characterized by their relative density, pore shape and orientation, the average cell size, and the degree of pore interconnectivity which all depend upon the method and conditions used for processing. This has created an interest in non-invasive sensor techniques to characterize the foam structure. Multifrequency electrical impedance measurements were performed using an eddy current technique on open cell aluminum foam with systematically varied relative densities and pore sizes. The impedance was dominated at all frequencies by the amount of metal contained within a probed volume of foam and the tortuosity of the current path. At low frequency, the impedance data were found to be relatively insensitive to pore size variations enabling an independent measure of the relative density. At higher frequency, the data indicated a strong dependence on the cell size.

Dharmasena, K.P.; Wadley, H.N.G. [Univ. of Virginia, Charlottesville, VA (United States). Intelligent Processing of Materials Lab.

1998-12-31T23:59:59.000Z

304

Real-Time Modeling of Ocean Currents for Navigating Underwater Glider Sensing Networks  

Science Journals Connector (OSTI)

Ocean models that are able to provide accurate and real-time prediction of ocean currents will improve the performance of glider navigation. ... a novel approach to compute a model for ocean currents at higher re...

Dongsik Chang; Xiaolin Liang; Wencen Wu

2014-01-01T23:59:59.000Z

305

Current-Induced Modulation of the Ocean Wave Spectrum and the Role of Nonlinear Energy Transfer  

Science Journals Connector (OSTI)

Numerical simulations were performed to investigate current-induced modulation of the spectral and statistical properties of ocean waves advected by idealized and realistic current fields. In particular, the role of nonlinear energy transfer ...

Hitoshi Tamura; Takuji Waseda; Yasumasa Miyazawa; Kosei Komatsu

2008-12-01T23:59:59.000Z

306

Numerical Wave Modeling in Conditions with Strong Currents: Dissipation, Refraction, and Relative Wind  

Science Journals Connector (OSTI)

Currents effects on waves have led to many developments in numerical wave modeling over the past two decades, from numerical choices to parameterizations. The performance of numerical models in conditions with strong currents is reviewed here, and ...

Fabrice Ardhuin; Aron Roland; Franck Dumas; Anne-Claire Bennis; Alexei Sentchev; Philippe Forget; Judith Wolf; Franoise Girard; Pedro Osuna; Michel Benoit

2012-12-01T23:59:59.000Z

307

Repository performance confirmation.  

SciTech Connect (OSTI)

Repository performance confirmation links the technical bases of repository science and societal acceptance. This paper explores the myriad aspects of what has been labeled performance confirmation in U.S. programs, which involves monitoring as a collection of distinct activities combining technical and social significance in radioactive waste management. This paper is divided into four parts: (1) A distinction is drawn between performance confirmation monitoring and other testing and monitoring objectives; (2) A case study illustrates confirmation activities integrated within a long-term testing and monitoring strategy for Yucca Mountain; (3) A case study reviews compliance monitoring developed and implemented for the Waste Isolation Pilot Plant; and (4) An approach for developing, evaluating and implementing the next generation of performance confirmation monitoring is presented. International interest in repository monitoring is exhibited by the European Commission Seventh Framework Programme 'Monitoring Developments for Safe Repository Operation and Staged Closure' (MoDeRn) Project. The MoDeRn partners are considering the role of monitoring in a phased approach to the geological disposal of radioactive waste. As repository plans advance in different countries, the need to consider monitoring strategies within a controlled framework has become more apparent. The MoDeRn project pulls together technical and societal experts to assimilate a common understanding of a process that could be followed to develop a monitoring program. A fundamental consideration is the differentiation of confirmation monitoring from the many other testing and monitoring activities. Recently, the license application for Yucca Mountain provided a case study including a technical process for meeting regulatory requirements to confirm repository performance as well as considerations related to the preservation of retrievability. The performance confirmation plan developed as part of the Yucca Mountain license application identified a broad suite of monitoring activities. A revision of the plan was expected to winnow the number of activities down to a manageable size. As a result, an objective process for the next stage of performance confirmation planning was developed as an integral part of an overarching long-term testing and monitoring strategy. The Waste Isolation Pilot Plant compliance monitoring program at once reflects its importance to stakeholders while demonstrating adequate understanding of relevant monitoring parameters. The compliance criteria were stated by regulation and are currently monitored as part of the regulatory rule for disposal. At the outset, the screening practice and parameter selection were not predicated on a direct or indirect correlation to system performance metrics, as was the case for Yucca Mountain. Later on, correlation to performance was established, and the Waste Isolation Pilot Plant continues to monitor ten parameters originally identified in the compliance certification documentation. The monitoring program has proven to be effective for the technical intentions and societal or public assurance. The experience with performance confirmation in the license application process for Yucca Mountain helped identify an objective, quantitative methodology for this purpose. Revision of the existing plan would be based on findings of the total system performance assessment. Identification and prioritization of confirmation activities would then derive from performance metrics associated with performance assessment. Given the understanding of repository performance confirmation, as reviewed in this paper, it is evident that the performance confirmation program for the Yucca Mountain project could be readily re-engaged if licensing activities resumed.

Hansen, Francis D.

2011-09-01T23:59:59.000Z

308

Current balancing for battery strings  

DOE Patents [OSTI]

A battery plant is described which features magnetic circuit means for balancing the electrical current flow through a pluraliircuitbattery strings which are connected electrically in parallel. The magnetic circuit means is associated with the battery strings such that the conductors carrying the electrical current flow through each of the battery strings pass through the magnetic circuit means in directions which cause the electromagnetic fields of at least one predetermined pair of the conductors to oppose each other. In an alternative embodiment, a low voltage converter is associated with each of the battery strings for balancing the electrical current flow through the battery strings.

Galloway, James H. (New Baltimore, MI)

1985-01-01T23:59:59.000Z

309

Testing of 3-meter Prototype Fault Current Limiting Cables  

SciTech Connect (OSTI)

Two 3-m long, single-phase cables have been fabricated by Ultera from second generation (2G) superconductor supplied by American Superconductor. The first cable was made with two layers of 2G tape conductor and had a critical current of 5,750 A while the second cable had four layers and a critical current of 8,500 A. AC loss was measured for both cables at ac currents of up to 4 kArms. Ultera performed initial fault current studies of both cables in Denmark with limited currents in the range from 9.1 to 44 kA. Results from these tests will provide a basis for a 25-m long, three-phase, prototype cable to be tested at ORNL early next year and a 300-m long, fault current limiting, superconducting cable to be installed in a ConEd substation in New York City.

Gouge, Michael J [ORNL] [ORNL; Duckworth, Robert C [ORNL] [ORNL; Demko, Jonathan A [ORNL] [ORNL; Rey, Christopher M [ORNL] [ORNL; Thompson, James R [ORNL] [ORNL; Lindsay, David T [ORNL] [ORNL; Tolbert, Jerry Carlton [ORNL] [ORNL; Willen, Dag [Ultera] [Ultera; Lentge, Heidi [Ultera] [Ultera; Thidemann, Carsten [Ultera] [Ultera; Carter, Bill [AMSC] [AMSC

2009-01-01T23:59:59.000Z

310

Shunt current loss of the vanadium redox flow battery  

Science Journals Connector (OSTI)

The shunt current loss is one of main factors to affect the performance of the vanadium redox flow battery, which will shorten the cycle life and decrease the energy transfer efficiency. In this paper, a stack-level model based on the circuit analog method is proposed to research the shunt current loss of the vanadium redox flow battery, in which the SOC (state of charge) of electrolyte is introduced. The distribution of shunt current is described in detail. The sensitive analysis of shunt current is reported. The shunt current loss in charge/discharge cycle is predicted with the given experimental data. The effect of charge/discharge pattern on the shunt current loss is studied. The result shows that the reduction of the number of single cells in series, the decrease of the resistances of manifold and channel and the increase of the power of single cell will be the further development for the VRFB stack.

Feng Xing; Huamin Zhang; Xiangkun Ma

2011-01-01T23:59:59.000Z

311

Current status of the GLASS code  

SciTech Connect (OSTI)

This paper summarizes the current status of the Generalized Lattice Analysis SubSystem (GLASS) computer code and its supporting cross section libraries. GLASS was developed at the Savannah River Site (SRS) in the early 1970's. The GLASS code has been instrumental in supporting safe Heavy Water Reactor (HWR) operations and predicting material production at SRS for more than 20 years. The Department of Energy Office of New Production Reactors (ONPR) program has chosen to use the GLASS code for the design of the HWR option of the New Production Reactor (NPR). A substantial body of validation calculations have been performed and additional validation calculations will be performed to qualify the new GLASS multigroup cross section libraries derived from the ENDF/B-5 and 6 nuclear data files. Several improvements to the code are in progress. Many other improvements are planned to bring GLASS up to modern physics and compute technology.

Hootman, H.E. (Westinghouse Savannah River Co., Aiken, SC (United States)); Honeck, H.C. (Computer Application Technology, Inc., Aiken, SC (United States))

1991-01-01T23:59:59.000Z

312

Current status of the GLASS code  

SciTech Connect (OSTI)

This paper summarizes the current status of the Generalized Lattice Analysis SubSystem (GLASS) computer code and its supporting cross section libraries. GLASS was developed at the Savannah River Site (SRS) in the early 1970`s. The GLASS code has been instrumental in supporting safe Heavy Water Reactor (HWR) operations and predicting material production at SRS for more than 20 years. The Department of Energy Office of New Production Reactors (ONPR) program has chosen to use the GLASS code for the design of the HWR option of the New Production Reactor (NPR). A substantial body of validation calculations have been performed and additional validation calculations will be performed to qualify the new GLASS multigroup cross section libraries derived from the ENDF/B-5 and 6 nuclear data files. Several improvements to the code are in progress. Many other improvements are planned to bring GLASS up to modern physics and compute technology.

Hootman, H.E. [Westinghouse Savannah River Co., Aiken, SC (United States); Honeck, H.C. [Computer Application Technology, Inc., Aiken, SC (United States)

1991-12-31T23:59:59.000Z

313

Clean Currents | Open Energy Information  

Open Energy Info (EERE)

Currents Currents Jump to: navigation, search Logo: Clean Currents Name Clean Currents Address 155 Gibbs St. Suite 425 Place Rockville, Maryland Zip 20850 Sector Wind energy Coordinates 39.08637°, -77.152069° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.08637,"lon":-77.152069,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

314

Inverter Using Current Source Topology  

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

of the new current-fed Trans-ZSI with wider motoring operation range V in 100 V, transformer turns ratio2 * Comparison of voltage boost ratio vs. duty ratio D A New...

315

Performance | OpenEI Community  

Open Energy Info (EERE)

Performance Performance Home Ocop's picture Submitted by Ocop(5) Member 18 April, 2013 - 13:41 MHK LCOE Reporting Guidance Draft Cost Current DOE LCOE numerical modeling Performance Tidal Wave To normalize competing claims of LCOE, DOE has developed-for its own use-a standardized cost and performance data reporting process to facilitate uniform calculation of LCOE from MHK device developers. This standardization framework is only the first version in what is anticipated to be an iterative process that involves industry and the broader DOE stakeholder community. Multiple files are attached here for review and comment.Upload Files: application/vnd.openxmlformats-officedocument.wordprocessingml.document icon device_performance_validation_data_request.docx application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon

316

STATEMENT OF CONSIDERATIONS REQUEST BY CREE LIGHTING COMPANY, FOR AN ADVANCE WAIVER OF DOMESTIC AND  

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

20 2001 09:52 FR IPL DOE CH 630 252 2779 TO FGCP-HQ P.02/04 20 2001 09:52 FR IPL DOE CH 630 252 2779 TO FGCP-HQ P.02/04 * * STATEMENT OF CONSIDERATIONS REQUEST BY CREE LIGHTING COMPANY, FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN INVENTION RIGHTS UNDER DOE COOPERATIVE AGREEMENT NO. DE-FC26- 00NT40985 W(A)-01-002, CH-1055 The Petitioner, Cree Lighting Company, (Cree), was awarded this cooperative agreement for the performance of work entitled, "Energy Efficient Solid State Lamp". The purpose of the cooperative agreement is to develop high efficiency, high radiance light emitting diode (LED) chip and packaging technology that is expected to lead to novel solid state lamps capable of replacing less energy efficient incandescent and halogen reflector lamps. When compared with current incandescent reflector lamps, this revolutionary new lamp is expected to be three times more

317

Gelcasting Polycrystalline Alumina  

SciTech Connect (OSTI)

OSRAM SYLVANIA INC. is a major U.S. manufacturer of high-intensity lighting. Among its products is the Lumalux TM line of high-pressure sodium vapor arc lamps, which are used for industrial, highway, and street lighting. The key to the performance of these lamps is the polycrystalline alumina (PCA) tube that is used to contain the plasma that is formed in the electric arc. That plasma consists of ionized sodium, mercury, and xenon vapors. The key attributes of the PCA tubes are their transparency ({approximately}97% total transmittance in the visible), their refractoriness (inner wall temperature can reach l2OOC), and their chemical resistance (sodium and mercury vapor are extremely corrosive). The current efficiency of the lamps is very high, up to 100 initial lumens per watt. (Compare incandescent lamps 10-20 lumens per watt, fluorescent lamps 25-90 lumens per watt.)

Janney, M.A.; Zuk, K.J.; Wei, G.C.

2000-01-01T23:59:59.000Z

318

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

E-Print Network [OSTI]

phasing out the use of incandescent lamps. Following majorproposed phase out of incandescent bulbs in Chile. 2 Lifeless energy: here incandescent lights (IL) are evaluated

Letschert, Virginie E.

2012-01-01T23:59:59.000Z

319

PHASE I FINAL REPORT SUBCONTRACT NO. 2019702 "ENERGY EFFICIENT FLUORESCENT BALLASTS"  

E-Print Network [OSTI]

RELATIVE EFFICIENCY (FOOT CANDLES/POWER IN) LAMP TEMPERATUREEFFICIENCY (FOOT CANDLES/POWER IN) LAMP TEMPERATURE *INPUT CURRENT POWER INPUT POWER FACTOR LIGHT IN FOOT CANDLES

Authors, Various

2011-01-01T23:59:59.000Z

320

Current Fluctuations in a Superconducting Circuit Carrying a Circulating Current  

Science Journals Connector (OSTI)

At 4.2K and 5.514 Gc/sec persistent currents in lead, vanadium, and niobium are free from fluctuations to less than 1.110-9, 4.310-9, and 8.910-10 of full shot noise, respectively.

H. J. Fink and A. Zacharias

1964-07-06T23:59:59.000Z

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


321

Variable current speed controller for eddy current motors  

DOE Patents [OSTI]

A speed control system for eddy current motors is provided in which the current to the motor from a constant frequency power source is varied by comparing the actual motor speed signal with a setpoint speed signal to control the motor speed according to the selected setpoint speed. A three-phase variable voltage autotransformer is provided for controlling the voltage from a three-phase power supply. A corresponding plurality of current control resistors is provided in series with each phase of the autotransformer output connected to inputs of a three-phase motor. Each resistor is connected in parallel with a set of normally closed contacts of plurality of relays which are operated by control logic. A logic circuit compares the selected speed with the actual motor speed obtained from a digital tachometer monitoring the motor spindle speed and operated the relays to add or substract resistance equally in each phase of the motor input to vary the motor current to control the motor at the selected speed.

Gerth, H.L.; Bailey, J.M.; Casstevens, J.M.; Dixon, J.H.; Griffith, B.O.; Igou, R.E.

1982-03-12T23:59:59.000Z

322

Electrochemically Stable Cathode Current Collectors for Rechargeable...  

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

Stable Cathode Current Collectors for Rechargeable Magnesium Batteries . Electrochemically Stable Cathode Current Collectors for Rechargeable Magnesium Batteries . Abstract:...

323

Chiral currents in gold nanotubes  

Science Journals Connector (OSTI)

Results are presented for the electron current in gold chiral nanotubes (AuNTs). Starting from the band structure of (4,3) and (5,3) AuNTs, we find that the magnitude of the chiral currents are greater than those found in carbon nanotubes. We also calculate the associated magnetic flux inside the tubes and find this to be higher than the case of carbon nanotubes. Although (4,3) and (5,3) AuNTs carry transverse momenta of similar magnitudes, the low-bias magnetic flux carried by the former is far greater than that carried by the latter. This arises because the low-bias longitudinal current carried by a (4,3) AuNT is significantly smaller than that of a (5,3) AuNT.

D. Zs. Manrique; J. Cserti; C. J. Lambert

2010-02-04T23:59:59.000Z

324

Current responsive devices for synchronous generators  

DOE Patents [OSTI]

A device for detecting current imbalance between phases of a polyphase alternating current generator. A detector responds to the maximum peak current in the generator, and detecting means generates an output for each phase proportional to the peak current of each phase. Comparing means generates an output when the maximum peak current exceeds the phase peak current.

Karlicek, Robert F. (Fullerton, CA)

1983-01-01T23:59:59.000Z

325

Carver Performance and Optimization  

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

Optimization Performance and Optimization Performance Monitoring Last edited: 2012-01-09 12:31:03...

326

UNL WATER CENTER WATER CURRENT  

E-Print Network [OSTI]

INSIDE UNL WATER CENTER WATER CURRENT PROTECTING NEBRASKAíS WATER RESOURCES THROUGH RESEARCH with a vision, thereís an untapped market using resources right under our feet,î the University of Nebraska outdoors in India, Bangladesh, China and Viet- nam. Thousands of them have been grown to harvest

Nebraska-Lincoln, University of

327

Current Issue June 10, 2009  

E-Print Network [OSTI]

Current Issue June 10, 2009 Vol. 109, No. 15 LETTERS CLASS NOTES MEMORIALS ALUMNI PROFILES SEARCH > Alum's startup company bets on Princeton research Alum's startup company bets on Princeton research materials-science innovation into a promising startup company. John Lettow '95, president and co

Aksay, Ilhan A.

328

ESnet Network Measurement Current Status  

E-Print Network [OSTI]

1 ESnet Network Measurement Current Status Joe Metzger Jan 24th 2008 ESCC meeting Energy SciencesSONAR collaboration focused on dynamic hybrid network issues ­ publication, visualization, and analysis of dynamic Architecture ­ Protocols based on the Open Grid Forum Network Measurement Working Group Schemas · Several

329

Optimization of Current Carrying Multicables  

E-Print Network [OSTI]

approach. Keywords Shape optimization · Genetic algorithm · Electric cables · Finite element method · Joule material, space and weight, manufacturers reduce cable diameters which is only possible to a certain extend multicables Helmut Harbrecht · Florian Loos Received: date / Accepted: date Abstract High currents in cable

Kraft, Hanspeter

330

Rotation of tokamak halo currents  

SciTech Connect (OSTI)

During tokamak disruptions, halo currents, which can be tenths of the total plasma current, can flow at the plasma edge along the magnetic field lines that intercept the chamber walls. Non-axisymmetric halo currents are required to maintain force balance as the plasma kinks when the edge safety factor drops to about two in a vertical displacement event. The plasma quickly assumes a definite toroidal velocity v{sub a}(r) with respect to that of the magnetic kink, v{sub k}, where v{sub a}(r) is set by the radial electric field required for ambipolarity. The plasma velocity, v{sub pl}=v{sub a}+v{sub k}, near the edge is influenced by the interaction with neutrals and with the potential in the halo required for quasi-neutrality on open magnetic field lines, and the plasma velocity in the core is influenced by external error fields. When plasma effects dominate magnetic locking, the magnetic kink should rotate at a diamagnetic speed of either the edge or the core. If the magnetic field lines of the halo plasma intercept the wall at locations of very different electrical conductivity, the toroidal rotation of the halo currents can intermittently stall at wall locations of high conductivity. Such stalling is seen in experiments. The toroidal phase difference between the stalled halo currents and the kink, which is expected to rotate smoothly, must satisfy {delta}{phi}<{+-}{pi}/2. A concern cited by ITER engineers is that the time varying force of the rotating halo could substantially increase the disruption loads on in-vessel components.

Boozer, Allen H. [Department of Applied Physics and Applied Mathematics Columbia University, New York, New York 10027 (United States)

2012-05-15T23:59:59.000Z

331

FY 1987 current fiscal year work plan  

SciTech Connect (OSTI)

This Current Year Work Plan presents a detailed description of the activities to be performed by the Joint Integration Office during FY87. It breaks down the activities into two major work areas: Program Management and Program Analysis. Program Management is performed by the JIO by providing technical planning and guidance for the development of advanced TRU waste management capabilities. This includes equipment/facility design, engineering, construction, and operations. These functions are integrated to allow transition from interim storage to final disposition. JIO tasks include program requirements identification, long-range technical planning, budget development, program planning document preparation, task guidance, task monitoring, information gathering and task reporting to DOE, interfacing with other agencies and DOE lead programs, integrating public involvement with program efforts, and preparation of program status reports for DOE. Program Analysis is performed by the JIO to support identification and assessment of alternatives, and development of long-term TRU waste program capabilities. This work plan includes: system analyses, requirements analyses, interim and procedure development, legislative and regulatory analyses, dispatch and traffic analyses, and data bases.

Not Available

1986-12-01T23:59:59.000Z

332

(1) Telegraphy (2) Continuous and Alternating Current Machinery An Elementary Textbook for use in Technical Schools (3) Laboratory Manual, Direct and Alternating Current (4) Transmission Line Formulas for Electrical Engineers and Engineering Students (5) Wireless Telegraphy (6) Incandescent Electric Lamps and Their Application  

Science Journals Connector (OSTI)

... the various kinds of electrical machinery now in use. Although the treatment is of an elementary kind and includes very few formulas, it is very thorough. It discusses all the ... special circumstances we should never think of using i iovolt mains for measuring the resistance of a yard or two of wire or of the armature of a dynamo, ...

DAVID ROBERTSON

1914-10-08T23:59:59.000Z

333

Quench current degradation in superconducting coil for 6.6 kV/2 fault current limiter  

SciTech Connect (OSTI)

A 6.6 kV/2 kA class fault current limiter that consists of non-inductive superconducting windings was developed and tested. The limiter can deliver continuous power at 2 kArms and limit fault current of more than 20 kA to 4 kA in 6 kV. The limiter recovers to the superconducting state within a few seconds and can perform a fault current limiting operation in 60 seconds after the last limiting operation. After high-voltage operation, however, the quench current of the limiter dropped significantly. This quench current degradation is related to the coil bobbin strain due to helium pressure raised by large ohmic heating in quenching. The degradation is a fatal problem for a fault current limiter if the quench current falls below the operating current because the limiter cannot revert to the normal operation. High Young`s modulus bobbin is effective to remove the coil degradation. They have obtained a fault current limiter without any degradation after repeated limiting operations.

Tasaki, K.; Yazawa, T.; Yoneda, E.S.; Nomura, S.; Maeda, H. [Toshiba Corp., Kawasaki (Japan). Research and Development Center] [Toshiba Corp., Kawasaki (Japan). Research and Development Center; Ohkuma, T.; Nakade, M.; Hara, T. [Tokyo Electric Power Co., Yokohama (Japan). Power Engineering R and D Center] [Tokyo Electric Power Co., Yokohama (Japan). Power Engineering R and D Center

1996-07-01T23:59:59.000Z

334

Radiotracers currently produced at Brookhaven  

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

Radiotracers currently produced at Brookhaven. Note that other radiotracers that are described in the literature can Radiotracers currently produced at Brookhaven. Note that other radiotracers that are described in the literature can also be transferred to our laboratory. Molecular Target/use Radiotracer Name Structure Chemical Name Hexokinase/glucose metabolism, cancer, brain function 18 FDG 2-deoxy-2-[ 18 F]fluoro-D-glucose Dopamine D2/D3 receptors/addiction, psychiatric disorders [ 11 C]raclopride 3,5-dichloro-N-{[(2S)-1-ethylpyrrolidin- 2-yl]methyl}-2-hydroxy-6- [ 11 C]methoxybenzamide Dopamine transporters / cocaine pharmacokinetics, addiction, neurological disorders [ 11 C]cocaine methyl (1R,2R,3S,5S)-3-s(benzoyloxy)- 8-[ 11 C]methyl-8-azabicyclo[3.2.1] octane-2-carboxylate Blood flow/nicotine pharmacokinetics [ 11 C]nicotine 3-[(2S)-1-[ 11 C]methylpyrrolidin-2-

335

The Universe Adventure - Current Research  

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

Current Research Current Research When launched, the Supernova Acceleration Probe (SNAP) will study the effects of dark energy by surveying distant type Ia supernovae and making detailed measurements of weak gravitational lensing. With the new Large Hadron Collider (LHC) at CERN nearing full completion, experimentalists will soon be able to test certain elements of String Theory. While not definitive, these tests will cast some light upon the theory's parameters and may even provide clues into the identity of dark matter. Meanwhile, theorists continue to investigate the implications of String Theory for Big Bang cosmology, particularly the effects of strings on cosmic inflation. As particle physicists eagerly await the results from the new LHC, observational cosmologists are busy developing astronomical experiments,

336

Nanolubricants to Improve Chiller Performance  

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

Nanolubricants to Improve Chiller Nanolubricants to Improve Chiller Performance Mark Kedzierski NIST MAK@NIST.GOV 301 975 5282 April 3, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: Enabling technology for improving the efficiency of chillers that cool large buildings with nanolubricants. (Nanolubricants are not currently used in chillers.) Develop fundamental understanding of how nanolubricants enhance refrigerant/nanolubricant. What nanoparticle size,

337

Currents on MDT end plugs  

E-Print Network [OSTI]

A sample of MDT tubes was irradiated in the CERN X5 facility to study their aging behaviour. Part of these tubes were subjected to a glow discharge cleaning (sputtering) with reversed high voltage up to 1660 mC/cm. Current and Ohmic resistance measurements on these tubes gave the same null result as for non-irradiated tubes. The inner plastic surface of one end plug was analysed through the XPS technique. No traces of aluminium were found.

Paschhoff, V

1998-01-01T23:59:59.000Z

338

Math Library Performance  

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

Math Library Performance Math Library Performance Fully optimizing a given application's performance often requires a deep understand of the source, an accurate profile for a...

339

Current guidelines produce competent endovascular surgeons  

Science Journals Connector (OSTI)

Objective This study was conducted to evaluate the safety of percutaneous endovascular procedures (PEPs) during integration of endovascular skills into an urban academic vascular surgery practice and assess the hypothesis that currently accepted guidelines are a valid benchmark for endovascular competency. Methods From 2000 through 2004, an endovascular training paradigm was instituted to integrate endovascular procedures into an academic endovascular practice. The paradigm involved individual mentoring of vascular surgery faculty by a partner with mature endovascular skills. Mentoring continued until each surgeon achieved a procedural experience of 100 diagnostic angiograms and 50 percutaneous endovascular interventions. Once achieved, privileges were granted for independent endovascular practice. To assess the effectiveness of the training process and competency of the newly trained endovascular practitioner, the surgeon-specific 30-day incidence of major complications and deaths for all \\{PEPs\\} performed during and after the mentoring process was determined. Complications and deaths were assigned to the mentor during the training process and to the individual surgeon once endovascular privileges were granted. Complications were classified as local vascular, local nonvascular, or systemic/remote. Results From 2000 through 2004, 1208 \\{PEPs\\} were performed. During this time, three faculty surgeons achieved sufficient endovascular procedural experience and were granted endovascular privileges. Major complications consisted of 17 local vascular, three local nonvascular, and four systemic/remote. Three deaths occurred. Renal percutaneous transluminal angioplasty/stent procedures had the highest complication and death rate at 9%. The major complication and death rate per year was 1.8% to 4.9% (P = .32) and did not significantly vary. The major complication and death rate for all 1208 \\{PEPs\\} was 2.2%. The surgeon-specific complication and death rate was 1.9% to 3.6% (P = .14) and did not vary between surgeons. Conclusion Endovascular skills can be safely transferred using a vascular surgeon-based training paradigm. When the training paradigm is directed at satisfying currently recommended guidelines for endovascular privileging, competent endovascular surgeons are the result.

Fred A. Weaver; Douglas B. Hood; Haimesh Shah; Jason Alexander; Steven Katz; Vincent Rowe; Albert E. Yellin

2006-01-01T23:59:59.000Z

340

Magnetorotational instability, current relaxation, and current-vortex sheet  

SciTech Connect (OSTI)

The conjugate effect of current relaxation and of current-vortex sheet formation on the magnetorotational instability is explored in a conducting fluid. It is found that the relative amplification of the magnetic viscosity from marginal stability to the instability determined by the maximum growth rate is around 924% when resistive effects dominate, while the corresponding quantity is around 220% in the ideal limit. This shows that the conjugate influence is much more efficient to amplify the magnetic viscosity than just the effect due to the standard magnetic tension. It is also found that the magnitude of the magnetic viscosity is effectively enhanced by the conjugate influence. The results presented here may contribute to the understanding of the various processes that play a significant role in the mechanism of anomalous viscosity observed in Keplerian disks. It is argued that the new effect shall be relevant in thin accretion disks. It is also mentioned that the proposed formulation may be of interest for some theories of magnetic reconnection. Possible extensions of this work are suggested.

Silveira, F. E. M. [Centro de Cincias Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adlia, 166, CEP 09210-170, Bairro Bangu, Santo Andr, SP (Brazil)] [Centro de Cincias Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adlia, 166, CEP 09210-170, Bairro Bangu, Santo Andr, SP (Brazil); Galvo, R. M. O. [Instituto de Fsica, Universidade de So Paulo, Rua do Mato, Travessa R, 187, CEP 05508-090, Cidade Universitria, So Paulo, SP (Brazil)] [Instituto de Fsica, Universidade de So Paulo, Rua do Mato, Travessa R, 187, CEP 05508-090, Cidade Universitria, So Paulo, SP (Brazil)

2013-08-15T23:59:59.000Z

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


341

RIS-M-2566 DISPERSION AND CURRENT MEASUREMENTS  

E-Print Network [OSTI]

. Current measurements have been performed in an area north of the Swedish nuclear power plant Barsebåck among the environmental sciences. Concerned primarily with radiation pro- tection, it encompasses the health effect of any amount of ac- tivity. Because they can be detected at ouch low levels, radioisotopes

342

CURRENT SHEET MASS LEAKAGE IN A PULSED PLASMA ACCELERATOR  

E-Print Network [OSTI]

of the evolution of the sheet and the performance of the device. It was found that after an initial bifurcation phase, the current sheet in this device enters a steady-state phase of propagation during which the mass and Peter Norgaard, thank you for listening to my attempts to explain my research and giving me valuable

Choueiri, Edgar

343

Ocean currents help explain population genetic structure  

Science Journals Connector (OSTI)

...original work is properly cited. Ocean currents help explain population genetic...larval dispersal estimates based on ocean current observations, we demonstrate...Data-assimilated models of ocean currents for the study region were produced...

2010-01-01T23:59:59.000Z

344

ESPC Past Performance Questionnaire  

Broader source: Energy.gov [DOE]

Document offers a series of questions to evaluate a contractors performance during an energy savings performance contract (ESPC).

345

Summary of Superconducting Fault Current Limiter Technology  

Science Journals Connector (OSTI)

In recent years, superconducting fault current limiter (SFCL) has become one of the forefront topics of current-limiting technology in the world. In this...

Linmang Wang; Pengzan Jiang; Dada Wang

2012-01-01T23:59:59.000Z

346

Fuel Cells - Current Technology | Department of Energy  

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

Current Technology Fuel Cells - Current Technology Today, fuel cells are being developed to power passenger vehicles, commercial buildings, homes, and even small devices such as...

347

Hydrogen Production - Current Technology | Department of Energy  

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

Current Technology Hydrogen Production - Current Technology The development of clean, sustainable, and cost-competitive hydrogen production processes is key to a viable future...

348

Natural Currents Energy Group | Open Energy Information  

Open Energy Info (EERE)

Natural Currents Energy Group Jump to: navigation, search Name: Natural Currents Energy Group Place: New York Sector: Hydro, Ocean, Renewable Energy, Solar, Wind energy Product:...

349

Current and future industrial energy service characterizations  

SciTech Connect (OSTI)

Current and future energy demands, end uses, and cost used to characterize typical applications and resultant services in the industrial sector of the United States and 15 selected states are examined. A review and evaluation of existing industrial energy data bases was undertaken to assess their potential for supporting SERI research on: (1) market suitability analysis, (2) market development, (3) end-use matching, (3) industrial applications case studies, and (4) identification of cost and performance goals for solar systems and typical information requirements for industrial energy end use. In reviewing existing industrial energy data bases, the level of detail, disaggregation, and primary sources of information were examined. The focus was on fuels and electric energy used for heat and power purchased by the manufacturing subsector and listed by 2-, 3-, and 4-digit SIC, primary fuel, and end use. Projections of state level energy prices to 1990 are developed using the energy intensity approach. The effects of federal and state industrial energy conservation programs on future industrial sector demands were assessed. Future end-use energy requirements were developed for each 4-digit SIC industry and were grouped as follows: (1) hot water, (2) steam (212 to 300/sup 0/F, each 100/sup 0/F interval from 300 to 1000/sup 0/F, and greater than 1000/sup 0/F), and (3) hot air (100/sup 0/F intervals). Volume I details the activities performed in this effort.

Krawiec, F.; Thomas, T.; Jackson, F.; Limaye, D.R.; Isser, S.; Karnofsky, K.; Davis, T.D.

1980-10-01T23:59:59.000Z

350

Motor current signature analysis method for diagnosing motor operated devices  

DOE Patents [OSTI]

A motor current noise signature analysis method and apparatus for remotely monitoring the operating characteristics of an electric motor-operated device such as a motor-operated valve. Frequency domain signal analysis techniques are applied to a conditioned motor current signal to distinctly identify various operating parameters of the motor driven device from the motor current signature. The signature may be recorded and compared with subsequent signatures to detect operating abnormalities and degradation of the device. This diagnostic method does not require special equipment to be installed on the motor-operated device, and the current sensing may be performed at remote control locations, e.g., where the motor-operated devices are used in accessible or hostile environments.

Haynes, Howard D. (Kingston, TN); Eissenberg, David M. (Oak Ridge, TN)

1990-01-01T23:59:59.000Z

351

Getting More Performance from Performance Measurement  

Science Journals Connector (OSTI)

...accountability and a workforce skilled in quality-improvement science. In the table, we offer some recommendations for avoiding the repetition of past failures and increasing the likelihood of success for performance initiatives. The science and practice of performance measurement have advanced substantially... Under today's performance-measurement paradigm, too many resources are invested in assessing too many activities that may not have major effects on patients' health. What can past successes and failures teach us about performance measures that effectively improve care?

Cassel C.K.; Conway P.H.; Delbanco S.F.

2014-12-04T23:59:59.000Z

352

Performance Management Methodology Moving from Performance Measurement to Performance Management  

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

Guide to a Balanced Scorecard: Guide to a Balanced Scorecard: Performance Management Methodology Moving from Performance Measurement to Performance Management Guide to a Balanced Scorecard Performance Management Methodology Richard H. Hopf Deputy Assistant Secretary for Procurement and Assistance Management Department of Energy Lloyd W. Pratsch Procurement Executive Department of State Robert A. Welch Director for Acquisition Management and Procurement Executive Department of Commerce Pauk A. Denett Director of Administration/Senior Procurement Executive Department of Interior David J. Litman Director, Office of Acquisition and Grants Management Department of Transportation Ida M. Ustad Deputy Associate Administrator for Acquisition Policy General Services Administration Terrence J. Tychan Deputy Assistant Secretary for Grants

353

CURRENT AND FUTURE IGCC TECHNOLOGIES:  

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

16, 2008 16, 2008 DOE/NETL-2008/1337 A Pathway Study Focused on Non-Carbon Capture Advanced Power Systems R&D Using Bituminous Coal - Volume 1 Current and Future IGCC Technologies 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, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or

354

Rotating concave eddy current probe  

DOE Patents [OSTI]

A rotating concave eddy current probe for detecting fatigue cracks hidden from view underneath the head of a raised head fastener, such as a buttonhead-type rivet, used to join together structural skins, such as aluminum aircraft skins. The probe has a recessed concave dimple in its bottom surface that closely conforms to the shape of the raised head. The concave dimple holds the probe in good alignment on top of the rivet while the probe is rotated around the rivet's centerline. One or more magnetic coils are rigidly embedded within the probe's cylindrical body, which is made of a non-conducting material. This design overcomes the inspection impediment associated with widely varying conductivity in fastened joints.

Roach, Dennis P. (Albuquerque, NM); Walkington, Phil (Albuquerque, NM); Rackow, Kirk A. (Albuquerque, NM); Hohman, Ed (Albuquerque, NM)

2008-04-01T23:59:59.000Z

355

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

E-Print Network [OSTI]

and general lighting incandescent services (GLIS) areLighting Phase out of incandescent lighting has been passedout of general service incandescent lamps (GSIL) which dont

Letschert, Virginie

2010-01-01T23:59:59.000Z

356

Building Technologies Office: Current Rulemakings and Notices  

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

Rulemakings and Rulemakings and Notices to someone by E-mail Share Building Technologies Office: Current Rulemakings and Notices on Facebook Tweet about Building Technologies Office: Current Rulemakings and Notices on Twitter Bookmark Building Technologies Office: Current Rulemakings and Notices on Google Bookmark Building Technologies Office: Current Rulemakings and Notices on Delicious Rank Building Technologies Office: Current Rulemakings and Notices on Digg Find More places to share Building Technologies Office: Current Rulemakings and Notices on AddThis.com... About Standards & Test Procedures Implementation, Certification & Enforcement Rulemakings & Notices Current Rulemakings & Notices Test Procedure Waivers Recent Federal Register Notices How to Participate or Comment

357

Building Technologies Office: Current Test Procedure Waivers  

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

Test Procedure Test Procedure Waivers to someone by E-mail Share Building Technologies Office: Current Test Procedure Waivers on Facebook Tweet about Building Technologies Office: Current Test Procedure Waivers on Twitter Bookmark Building Technologies Office: Current Test Procedure Waivers on Google Bookmark Building Technologies Office: Current Test Procedure Waivers on Delicious Rank Building Technologies Office: Current Test Procedure Waivers on Digg Find More places to share Building Technologies Office: Current Test Procedure Waivers on AddThis.com... About Standards & Test Procedures Implementation, Certification & Enforcement Rulemakings & Notices Current Rulemakings & Notices Test Procedure Waivers Recent Federal Register Notices How to Participate or Comment

358

Fluorescent Lighting Basics | Department of Energy  

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

Fluorescent Lighting Basics 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 supply called a ballast that is needed to regulate lamp operating current and provide a compatible start-up voltage. Electronic ballasts perform the same function as a magnetic ballast but outperform the outdated magnetic products by operating at a very high frequency that eliminates flicker and noise while

359

Correlation of superconductor strand, cable, and dipole critical currents in CBA magnets  

SciTech Connect (OSTI)

A calibration between vendor critical current data for 0.0268'' diameter superconductor strand supplied to Fermilab, and the BNL 10/sup -12/..cap omega..cm critical current specification is presented. Vendor critical current data for over 400 Fermilab type billets are shown, both as supplied by the vendor and converted to BNL units. Predictions of cable critical current are made using the sum of the critical currents of the 23 strands, where all strands from the same half billet are assigned the same critical current. The measured critical current shows excellent correlation to the predicted value and is approximately 14 +- 2 percent below it. Colliding Beam Accelerator (CBA) full length dipoles reach the conductor critical current limit, essentially without training. Magnet performance is predictable from the measured critical current of a short sample of cable to within 2%.

Tannenbaum, M.J.; Garber, M.; Sampson, W.B.

1982-01-01T23:59:59.000Z

360

Performance estimates for personnel access control systems  

SciTech Connect (OSTI)

Current performance estimates for personnel access control systems use estimates of Type I and Type II verification errors. A system performance equation which addresses normal operation, the insider, and outside adversary attack is developed. Examination of this equation reveals the inadequacy of classical Type I and II error evaluations which require detailed knowledge of the adversary threat scenario for each specific installation. Consequently, new performance measures which are consistent with the performance equation and independent of the threat are developed as an aid in selecting personnel access control systems.

Bradley, R. G.

1980-10-01T23:59:59.000Z

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


361

On Line Power Plant Performance Monitoring  

E-Print Network [OSTI]

in achieving the best operation of the plant 3. To evaluate component performance and deterioration for use in a maintenance program 4. To develop cost data and incremental cost characteristics for the economic operation or dispatch of the unit... ? Analyze current plant?eQuipment status and diagnostics for preventive maintenance and equipment damage ? Provide current energy management and system dispatch operation information ? Capability for plant and equipment acceptance and periodic...

Ahner, D. J.; Priestley, R. R.

362

The Laboratory Performance Appraisal Process and Performance...  

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

Modification No. 0164 Appendix B i ATTACHMENT J.2 APPENDIX B PERFORMANCE EVALUATION MEASUREMENT PLAN (PEMP) Applicable to the Operation of Ames Laboratory Contract No....

363

The status of neutral currents  

SciTech Connect (OSTI)

The situation of particle physics today is quite puzzling. On the one hand, the Standard Model (SM) of strong and electroweak interactions is consistent with all confirmed experimental data but theoretically rather unsatisfactory. On the other hand, none of the many theoretical speculations which try to go beyond the SM has (yet) received the slightest experimental support. The solution to this dilemma can only come from new data: either from the detection of a new particle threshold at high energy colliders, or from the appearance of some small discrepancy in high-precision experiments. A crucial sector for testing the SM and its extensions is that of neutral currents (NC), where an impressive amount of data has been collected in recent years. While waiting for the next generation of experiments, it is certainly useful to take stock of our knowledge, determining the NC parameters as precisely as we can and putting limits on possible deviations from the SM. The present talk contains the results of a recent analysis along these lines: the first part illustrates how a set of 'model-independent' parameters can be extracted from the available NC data, the second part particularizes the analysis to the SM and to some superstring-inspired models with an additional Z' in their low-energy spectrum. 27 refs., 3 figs., 1 tab.

Zwirner, F.

1987-11-01T23:59:59.000Z

364

Current Direct Neutrino Mass Experiments  

E-Print Network [OSTI]

In this contribution we review the status and perspectives of direct neutrino mass experiments. These experiments investigate the kinematics of $\\beta$-decays of specific isotopes ($^3$H, $^{187}$Re, $^{163}$Ho) to derive model-independent information on the averaged electron (anti-) neutrino mass, which is formed by the incoherent sum of the neutrino mass eigenstates contributing to the electron neutrino. We first review the kinematics of $\\beta$-decay and the determination of the neutrino mass, before giving a brief overview of past neutrino mass measurements (SN1987a-ToF studies, Mainz and Troitsk experiments for $^3$H, cryo-bolometers for $^{187}$Re). We then describe the Karlsruhe Tritium Neutrino (KATRIN) experiment which is currently under construction at Karlsruhe Institute of Technology. The large-scale setup will use the MAC-E-Filter principle pioneered earlier to push the sensitivity down to a value of 200 meV(90% C.L.). KATRIN faces many technological challenges that have to be resolved with regar...

Drexlin, G; Mertens, S; Weinheimer, C

2013-01-01T23:59:59.000Z

365

Solid-State Lighting: Current Opportunities  

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

Financial Financial Opportunities Printable Version Share this resource Send a link to Solid-State Lighting: Current Opportunities to someone by E-mail Share Solid-State Lighting: Current Opportunities on Facebook Tweet about Solid-State Lighting: Current Opportunities on Twitter Bookmark Solid-State Lighting: Current Opportunities on Google Bookmark Solid-State Lighting: Current Opportunities on Delicious Rank Solid-State Lighting: Current Opportunities on Digg Find More places to share Solid-State Lighting: Current Opportunities on AddThis.com... Current Opportunities DOE Selections Related Opportunities Current Opportunities DE-FOA-0000973: Solid-State Lighting Advanced Technology R&D - 2014 DE-FOA-0001046: FY14 SBIR/STTR Phase I, Release 2 Contacts | Web Site Policies | U.S. Department of Energy | USA.gov

366

Performance and Reliability of Quantum Cascade Lasers  

SciTech Connect (OSTI)

We present the burn-in behavior and power stability of multiple quantum cascade lasers (QCLs) that were measured to investigate their long-term performance. For these experiments, the current to the QCL was cycled every ten minutes, and the output power was monitored over time for durations as long as two months. A small increase in power for a given injection current is observed for almost all of the QCLs tested during the burn-in period. The data from these experiments will be presented along with the effects of packaging the QCLs to determine the impact on performance and reliability.

Myers, Tanya L.; Cannon, Bret D.; Taubman, Matthew S.; Bernacki, Bruce E.

2013-05-01T23:59:59.000Z

367

Anode performance | EMSL  

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

Anode performance New hybrid anode design to improve long-term performance of batteries PNNL researchers have developed a hybrid anode made of graphite and lithium that...

368

Tokamak Equilibria with Reversed Current Density  

Science Journals Connector (OSTI)

Observations of nearly zero toroidal current in the central region of tokamaks (the current hole) raises the question of the existence of toroidal equilibria with very low or reversed current in the core. The solutions of the Grad-Shafranov equilibrium equation with hollow toroidal current density profile including negative current density in the plasma center are investigated. Solutions of the corresponding eigenvalue problem provide simple examples of such equilibrium configurations. More realistic equilibria with toroidal current density reversal are computed using a new equilibrium problem formulation and computational algorithm which do not assume nested magnetic surfaces.

A. A. Martynov; S. Yu. Medvedev; L. Villard

2003-08-21T23:59:59.000Z

369

Next Generation CANDU Performance Assurance  

SciTech Connect (OSTI)

AECL is developing a next generation CANDU design to meet market requirements for low cost, reliable energy supplies. The primary product development objective is to achieve a capital cost substantially lower than the current nuclear plant costs, such that the next generation plant will be competitive with alternative options for large-scale base-load electricity supply. However, other customer requirements, including safety, low-operating costs and reliable performance, are being addressed as equally important design requirements. The main focus of this paper is to address the development directions that will provide performance assurance. The next generation CANDU is an evolutionary extension of the proven CANDU 6 design. There are eight CANDU 6 units in operation in four countries around the world and further three units are under construction. These units provide a sound basis for projecting highly reliable performance for the next generation CANDU. In addition, the next generation CANDU program includes development and qualification activities that will address the new features and design extensions in the advanced plant. To limit product development risk and to enhance performance assurance, the next generation CANDU design features and performance parameters have been carefully reviewed during the concept development phase and have been deliberately selected so as to be well founded on the existing CANDU knowledge base. Planned research and development activities are required only to provide confirmation of the projected performance within a modest extension of the established database. Necessary qualification tests will be carried out within the time frame of the development program, to establish a proven design prior to the start of a construction project. This development support work coupled with ongoing AECL programs to support and enhance the performance and reliability of the existing CANDU plants will provide sound assurance that the next generation CANDU plants will meet customer expectations. (authors)

Wren, David J.; Allsop, P.J.; Hopwood, J.M. [Atomic Energy of Canada Ltd., Ontario (Canada)

2002-07-01T23:59:59.000Z

370

Management and Performance PERFORMANCE REPORTING AND PLANNING  

E-Print Network [OSTI]

AND PLANNING M&P-144 the Agency's workforce is well informed of major Agency initiatives and human capitalManagement and Performance PERFORMANCE REPORTING AND PLANNING M&P-143 Strategic Goal 5: Enable.1: IDENTIFY, CULTIVATE, AND SUSTAIN A DIVERSE WORKFORCE AND INCLUSIVE WORK ENVIRONMENT THAT IS NEEDED

371

Das Prfzentrum Carsten Lampe, Daniel Eggert,  

E-Print Network [OSTI]

Kalibrierlaboratorien" · Qualitätswesen analog den Anforderungen der ISO 9001 z.B. Sensorkalibriersystem / Dokumentation Prüfinstitut (durch DGWK, heute DIN CERTCO) · Seit 2003 ISO/IEC 17025 akkreditiert · Seit 2003 Prüfungen und;4 Was verlangt die Akkreditierung? ISO IEC 17025 ,,Allgemeine Anforderungen an die Kompetenz von Prüf- und

372

Max Tech and Beyond: Fluorescent Lamps  

E-Print Network [OSTI]

contain one or more rare earth elements in their chemicalcomposition. The rare earth elements are a collection of

Scholand, Michael

2012-01-01T23:59:59.000Z

373

High current metal ion implantation facility  

SciTech Connect (OSTI)

A vacuum arc ion source based metal ion implantation facility has been established at Dokuz Eylul University, Izmir, Turkey and a surface modification research and development program is underway. The system is similar to the one in Lawrence Berkeley Laboratory which was first built and developed by Brown et al. The broad-beam ion source is repetitively pulsed at rates up to {approximately}10 pulses per second (can be increased to 50 pulses per second) and the extracted ion beam current can be up to {approximately}1 Amp. peak or {approximately}10 mA time averaged. The ion source extraction voltage was increased to 60 kV corresponding to mean beam energies of up to 150 keV or more because of the ion charge state multiplicity (extraction voltage can be increased to 100 kV if desired). Commissioning of the facility is in progress. Initial emphasis of the R and D programs that will be carried out will be in forming tribologically enhanced materials for industrial applications. In this paper they describe the design and operation of the implanter, summarize the preliminary performance parameters that have been obtained, and outline some of the programs they anticipate doing.

Oztarhan, A. [Dokuz Eylul Univ., Izmir (Turkey); Brown, I.G. [Lawrence Berkeley Lab., CA (United States); Evans, P.; Watt, G. [ANSTO, Lucas Heights (Australia). Physics Div.; Bakkaloglu, C.; Eltas, A.S. [Ataturk Organyze San., Izmir (Turkey); Oks, E. [Russian Academy of Sciences, Tomsk (Russian Federation). High Current Electronics Inst.

1998-12-31T23:59:59.000Z

374

Definition: Fault Current Limiter | Open Energy Information  

Open Energy Info (EERE)

Limiter Limiter Jump to: navigation, search Dictionary.png Fault Current Limiter A fault current limiter prevents current in an electrical circuit from exceeding a predetermined level by increasing the electrical impedance of that circuit before the current through the circuit exceeds that level. Fault current limiters are designed so as to minimize the impedance of the circuit under normal conditions to reduce losses, but increase the impedance of the circuit under fault conditions to limit fault current.[1] View on Wikipedia Wikipedia Definition A Fault Current Limiter (FCL) is a device which limits the prospective fault current when a fault occurs (e.g. in a power transmission network). The term includes superconducting devices and non-superconducting devices, however some of the more simple non-superconducting devices (such

375

Current DOE and OSHA VPP Sites  

Broader source: Energy.gov [DOE]

Need to know which sites are current DOE-VPP or OSHA VPP Sites? The link, below, will take you to a Voluntary Protection Programs Participant's Association web page where you may search for current...

376

Current drive operation in a tokamak  

Science Journals Connector (OSTI)

Three modes of current drive operation in a tokamak continuous, cyclic, and rfinitiated-are ... A model design of a saturable iron core tokamak for current drive experiments is also presented.

O. Mitarai; A. Hirose

1985-12-01T23:59:59.000Z

377

Geoengineering Downwelling Ocean Currents: A Cost Assessment  

Science Journals Connector (OSTI)

Downwelling ocean currents carry carbon into the deep ocean (the solubility pump), and play a ... weakening of the NADW is modification of downwelling ocean currents, by an increase in carbon concentration or ......

S. Zhou; P. C. Flynn

2005-07-01T23:59:59.000Z

378

Current Test Procedure Waivers | Department of Energy  

Energy Savers [EERE]

Current Test Procedure Waivers Current Test Procedure Waivers The U.S. Department of Energy's (DOE) regulations for covered products permit a person to seek a waiver, or an interim...

379

High Performance Electrolyzers for Hybrid Thermochemical Cycles  

SciTech Connect (OSTI)

Extensive electrolyzer testing was performed at the University of South Carolina (USC). Emphasis was given to understanding water transport under various operating (i.e., temperature, membrane pressure differential and current density) and design (i.e., membrane thickness) conditions when it became apparent that water transport plays a deciding role in cell voltage. A mathematical model was developed to further understand the mechanisms of water and SO2 transport, and to predict the effect of operating and design parameters on electrolyzer performance.

Dr. John W. Weidner

2009-05-10T23:59:59.000Z

380

Lightning strikes to tall objects: Currents inferred from far electromagnetic fields versus directly measured currents  

E-Print Network [OSTI]

-field-to-current conversion factors for lightning strikes to tall objects for (1) the initial peak current at the object top. These far-field-to-current conversion factors are needed for proper interpretation of peak currents reported-field-to-current conversion factor for lightning strikes to flat ground based on the transmission line model and (b

Florida, University of

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


381

Chiral Structure of Vector and Axial-Vector Tetraquark Currents  

E-Print Network [OSTI]

We investigate the chiral structure of local vector and axial-vector tetraquark currents, and study their chiral transformation properties. We consider the charge-conjugation parity and classify all the isovector vector and axial-vector local tetraquark currents of quantum numbers I(G)J(PC)=1(-)1(-+), I(G)J(PC)=1(+)1(--), I(G)J(PC)=1(-)1(++) and I(G)J(PC)=1(+)1(+-). We find that there is a one to one correspondence among them. Using these currents, we perform QCD sum rule analyses. Our results suggest that there is a missing b1 state having I(G)J(PC)=1(+)1(+-) and a mass around 1.47-1.66 GeV.

Hua-Xing Chen

2013-11-20T23:59:59.000Z

382

Recovery time of superconducting non-inductive reactor type fault current limiter  

SciTech Connect (OSTI)

A superconducting fault current limiting device for electric power systems has been investigated to find out its feasibility. Non-inductive reactor type fault current limiter has been constructed using metal superconductor. Two bifilar wound solenoids were connected in antiparallel or antiseries. On each connection, the fault current limiting test was performed by short-circuiting a resistive load suddenly. The recovery (normal-to-superconductive state transition) time after the current limiting mode has been studied using small scale model of fault current limiter for the low voltage distribution line. The results reveal that the current limiter could be operated under repetitive fault current accident which was removed within a few cycle of the limiting mode. The recovery time is a function of the dissipated energy under current limiting mode. Test results are presented.

Hoshino, T.; Muta, I.; Tsukiji, H. [Saga Univ., Honjo, Saga (Japan)] [Saga Univ., Honjo, Saga (Japan); Ohkubo, K.; Etoh, M. [Kyushu Electric Power Co., Kono-Higashi, Saga (Japan)] [Kyushu Electric Power Co., Kono-Higashi, Saga (Japan)

1996-07-01T23:59:59.000Z

383

Hydrogen Storage - Current Technology | Department of Energy  

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

Current on-board hydrogen storage approaches involve compressed hydrogen gas tanks, liquid hydrogen tanks, cryogenic compressed hydrogen, metal hydrides,...

384

Energy Current Correlations For Weakly Anharmonic Lattices  

E-Print Network [OSTI]

We discuss energy current correlations in thermal equilibrium and point out the linkage to the fluctuating Peierls equation.

Herbert Spohn

2007-06-06T23:59:59.000Z

385

WORLD SURFACE CURRENTS FROM SHIP'S DRIFT OBSERVATIONS  

SciTech Connect (OSTI)

Over 4 million observations of ship's drift are on file at the U.S. National Oceanographic Data Centre, in Washington, D. C., representing a vast amount of information on ocean surface currents. The observed drift speeds are dependent on the frequency of occurence of the particular current speeds and the frequency of observation. By comparing frequency of observation with the drift speeds observed it is possible to confirm known current patterns and detect singularities in surface currents.

Duncan, C.P.; Schladow, S.G.

1980-11-01T23:59:59.000Z

386

ACR 891 (?) Ocean Policy: Current Issues seminar  

E-Print Network [OSTI]

ACR 891 (?) Ocean Policy: Current Issues seminar Fall, 2013 (2 cr, + 1 cr optional) Professor of a common pool resource than the world's oceans it can only be the atmosphere. The latter is currently neglected. This seminar is intended to introduce students to some of the current issues in ocean policy

387

Ocean Surface Currents From Geostationary Satellite SST  

E-Print Network [OSTI]

Ocean Surface Currents From Geostationary Satellite SST -We are implementing and evaluating a feature tracking approach to estimate ocean surface currents. - This approach allows us to estimate://cioss.coas.oregonstate.edu/ Ocean surface currents (vectors) derived from SST (background) modeled fields along the west coast of U

Kurapov, Alexander

388

Waves on unsteady currents Merrick C. Haller  

E-Print Network [OSTI]

Waves on unsteady currents Merrick C. Haller School of Civil and Construction Engineering, Oregon 2007; published online 3 December 2007 Models for surface gravity wave propagation in the presence of currents often assume the current field to be quasi-stationary, which implies that the absolute wave

Haller, Merrick

389

Aquantis Ocean Current Turbine Development Project Report  

SciTech Connect (OSTI)

The Aquantis Current Plane (C-Plane) technology developed by Dehlsen Associates, LLC (DA) and Aquantis, Inc. is an ocean current turbine designed to extract kinetic energy from ocean currents. The technology is capable of achieving competitively priced base-load, continuous, and reliable power generation from a source of renewable energy not before possible in this scale or form.

Fleming, Alex J.

2014-08-23T23:59:59.000Z

390

Superconducting fault current limiter with fast vacuum commutation modulus  

Science Journals Connector (OSTI)

A new approach to a problem of creation of a resistive version of superconducting fault current limiters (FCL) on the basis of HTS materials has been considered. According to this approach, a scheme of FCL is added by a commutation modulus which contains a fast vacuum interrupter. This interrupter allows one to switch off the transport current as soon as 5 ms after transition of the HTS element to the normal state. The proposed scheme allows one to restrict more than an order in value a necessary operation time of FCL in a regime of a current limitation. As a result, a time of recovering the superconducting state can be significantly reduced that allows FCL to operate in automatic iterative regime. The considering device can operate not only in high voltage ac transmission lines but also in dc electrical networks. A numerical simulation of transit processes in a proposed scheme of FCL has been performed for different regimes and its features are analyzed with respect to other schemes of FCL. An experimental study of test mock-up commutation elements of FCL has been performed. This study demonstrates an efficiency of the proposed scheme. A test of a FCL model with the limiting current up to 15 kA has been realized.

D Alferov; D Yevsin; L Fisher; V Ivanov; V Sidorov

2008-01-01T23:59:59.000Z

391

A review of high beam current RFQ accelerators and funnels  

SciTech Connect (OSTI)

The authors review the design features of several high-current (> 20-mA) and high-power (> 1-mA average) proton or H{sup {minus}} injectors, RFQs, and funnels. They include a summary of observed performance and will mention a sampling of new designs, including the proposed incorporation of beam choppers. Different programs and organizations have chosen to build the RFQ in diverse configurations. Although the majority of RFQs are either low-current or very low duty-factor, several versions have included high-current and/or high-power designs for either protons or H{sup {minus}} ions. The challenges of cooling, handling high space-charge forces, and coupling with injectors and subsequent accelerators are significant. In all instances, beam tests were a valuable learning experience, because not always did these as-built structures perform exactly as predicted by the earlier design codes. They summarize the key operational parameters, indicate what was achieved, and highlight what was learned in these tests. Based on this generally good performance and high promise, even more challenging designs are being considered for new applications that include even higher powers, beam funnels and choppers.

Schneider, J.D.

1998-12-01T23:59:59.000Z

392

E-Print Network 3.0 - approaches current status Sample Search...  

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

March 31, 2009 The FSSI is a performance measure for the sustainability of 230 U.S. fish stocks1 Summary: are footnoted, along with the official current status in the stock...

393

Property values, housing subsidies and incentives : evidence from Chile's current housing policies  

E-Print Network [OSTI]

This study evaluates the performance of low income housing subsidy programs currently operating in Chile. The use of detailed microdata allows a close assessment of the relationship between individual subsidy grants, ...

Razmilic Burgos, Slaven Antonio

2010-01-01T23:59:59.000Z

394

Rotation of orbital currents in the trains of internal solitons in the ocean  

Science Journals Connector (OSTI)

We analyze the results of measurements of currents in the trains of internal solitons on the New-York shelf of the Atlantic Ocean performed in the course of the Joint ... monotonic anticyclonic variation of the d...

K. D. Sabinin; R. Chapman; G. I. Kozubskaya

2000-01-01T23:59:59.000Z

395

Controlling electrode gap during vacuum arc remelting at low melting current  

DOE Patents [OSTI]

An apparatus and method are disclosed for controlling electrode gap in a vacuum arc remelting furnace, particularly at low melting currents. Spectrographic analysis is performed of the metal vapor plasma, from which estimates of electrode gap are derived. 5 figs.

Williamson, R.L.; Zanner, F.J.; Grose, S.M.

1997-04-15T23:59:59.000Z

396

Bias current influence on the characteristic of the magnetic-controlled switcher type fault current limiter  

Science Journals Connector (OSTI)

A novel magnetic-controlled switcher type fault current limiter (FCL) for high voltage electric network is presented. The current limiting principle of the FCL and the bias current influence on the characteristic...

Yan-xia Pan ???; Jian-guo Jiang ???

2009-06-01T23:59:59.000Z

397

Tunneling current modulation by Ge incorporation into Si oxide films for flash memory applications  

SciTech Connect (OSTI)

Current-voltage characteristic for a Ge-incorporated Si oxide was investigated. Current enhancement was observed for the electric field larger than 10 MV/cm. Such a current enhancement only under high electric field is expected to improve programming performance without deteriorating reading performance. From secondary ion mass spectrometry and hard x-ray photoelectron spectroscopy analyses and current simulation, it is concluded that the Ge impurity in Ge{sup 4+} state around the tunnel oxide/substrate interface enhances the current by trap-assisted tunneling. The programming current enhancement induced by the Ge incorporation is expected to be one of the promising solutions for the next-generation flash memory.

Ito, Toshihide; Mitani, Yuuichiro; Nakasaki, Yasushi; Koike, Masahiro [Corporate Research and Development Center, Toshiba Corporation, Saiwai-ku, Kawasaki 212-8582 (Japan); Konno, Takuya; Matsuba, Hiroshi [Corporate Manufacturing Engineering Center, Toshiba Corporation, Isogo-ku, Yokohama 235-0017 (Japan); Kai, Tetsuya; Kaneko, Wakana; Ozawa, Yoshio [Device Process Development Center, Corporate Research and Development Center, Toshiba Corporation, Isogo-ku, Yokohama 235-8522 (Japan)

2012-02-13T23:59:59.000Z

398

Appliances and Commercial Equipment Standards  

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

High-Intensity Discharge Lamps High-Intensity Discharge Lamps Sign up for e-mail updates on regulations for this and other products There are currently no energy conservation standards for high-intensity discharge (HID) lamps. HID lamps are electric discharge lamps and include high-pressure sodium, mercury vapor, and metal halide lamps. HID lamps require an HID ballast to start and regulate electric current flow through the lamp. HID lamps are used in street and roadway lighting, area lighting such as for parking lots and plazas, industrial and commercial building interior lighting, security lighting for commercial, industrial, and residential spaces, and landscape lighting. The Standards and Test Procedures for this product are related to Rulemaking for High Intensity Discharge Lamps Energy Conservation Standard and Rulemaking for High Intensity Discharge Lamps Test Procedures.

399

Definition: Direct current | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Direct current Jump to: navigation, search Dictionary.png Direct current A type of electricity transmission and distribution by which electricity flows in one direction through the conductor, usually relatively low voltage and high current (such as from a battery). To be used for typical 120 volt or 220 volt household appliances, DC must be converted to alternating current (AC).[1][2] View on Wikipedia Wikipedia Definition Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by sources such as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also flow

400

Definition: Fault Current Limiting | Open Energy Information  

Open Energy Info (EERE)

Limiting Limiting Jump to: navigation, search Dictionary.png Fault Current Limiting Fault current limiting can be achieved through sensors, communications, information processing, and actuators that allow the utility to use a higher degree of network coordination to reconfigure the system to prevent fault currents from exceeding damaging levels. Fault current limiting can also be achieved through the implementation of special stand alone devices known as Fault Current Limiters (FCLs) which act to automatically limit high through currents that occur during faults.[1] Related Terms fault, fault current limiter References ↑ SmartGrid.gov 'Description of Functions' Temp LikeLike UnlikeLike You like this.Sign Up to see what your friends like. late:ISGANAttributionsmart grid,smart grid,smart grid,smart grid,

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


401

Definition: Alternating current | Open Energy Information  

Open Energy Info (EERE)

Alternating current Alternating current Jump to: navigation, search Dictionary.png Alternating current An electric current that reverses its direction at regularly recurring intervals. In the United States, the standard is 120 reversals or 60 cycles per second. Electricity transmission networks use AC.[1][2] View on Wikipedia Wikipedia Definition In alternating current (AC, also ac), the flow of electric charge periodically reverses direction. In direct current (DC, also dc), the flow of electric charge is only in one direction. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage. AC is the form in which electric power is delivered to businesses and residences. The usual waveform of an AC power circuit is a

402

Transformer design and application considerations for nonsinusoidal load currents  

SciTech Connect (OSTI)

The use of adjustable-speed drives requires transformers capable of withstanding high levels of harmonic currents under normal operating conditions. Experience has been that overheating problems are much more common with dry-type transformers than with liquid-filled transformers. Transformer insulation life is determined by the hot spot temperature but confirmation of hot spot temperature rise is one performance characteristic which is ignored in industry standards. This is especially important for transformers rated for nonsinusoidal load currents. Hot spot allowances used in IEEE standards for ventilated dry-type transformers were developed in 1944 and recent data indicates that revisions are required. The design of transformers for nonsinusoidal load currents should include an analysis of the eddy loss distribution in the windings and calculation of the hot spot temperature rise. Calculations and thermal tests giving only average winding temperature rises are not sufficient. Thermal tests with nonsinusoidal currents and measurements of hot spot temperature rises are extremely difficult on large transformers. The combination of testing and analysis may be the only economically practical approach. Analysis indicates that the dry type transformer hot spot temperature is very sensitive to the eddy loss magnitude and distribution. The Underwriters Laboratories Inc. (UL) K-factor rated dry type transformer and the recommended practices given in ANSI/IEEE C57.110 are reviewed. When purchasing transformers subject to nonsinusoidal load currents, considerations should be given to the manufacturer`s development program and capability to calculate the eddy loss distribution and hot spot temperatures.

Pierce, L.W. [General Electric Co., Rome, GA (United States)] [General Electric Co., Rome, GA (United States)

1996-05-01T23:59:59.000Z

403

Interlaboratory Comparisons of NbTi Critical Current Measurements  

SciTech Connect (OSTI)

We report on a multi-institute comparison of critical current data measured on a modern NbTi wire for the Large Hadron Collider (LHC), which has shown a standard deviation below 1% in critical current density spread in more than 1500 measurements. Interlaboratory comparisons on Nb{sub 3}Sn wires have shown ambiguities that could be attributable to strain related differences in critical current density, originating from differences in sample handling, reaction, and mounting techniques, or also to differences in the magnetic field and current calibrations between the institutes. A round robin test of a well characterized NbTi wire provides a baseline variance in critical current results that is presumed to be attributable only to differences in the characterization systems. Systematic differences on the order of 3.5% are found in the comparison. The most likely cause for the observed differences is a small diameter holder that brings the wire into a strain regime in which strain effects can no longer be ignored. A NbTi round robin test, when performed properly, will separate system differences from sample specific differences and provide laboratories with an opportunity to calibrate equipment against a standard measurement.

Godeke, A.; Turrioni, D.; Boutboul, T.; Cheggour, N.; Goodrich, L.F.; Ghosh, A.; Den Ouden, A.; Meinesz, M.

2009-08-16T23:59:59.000Z

404

Hopper Performance and Optimization  

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

Optimization Optimization Performance and Optimization Compiler Comparisons Comparison of different compilers with different options on several benchmarks. Read More » Using OpenMP Effectively Performance implications and case studies of codes combining MPI and OpenMP Read More » Reordering MPI Ranks Reordering MPI ranks can result in improved application performance depending on the communication patterns of the application. Read More » Application Performance Variability on Hopper How an application is placed across Hopper's roughly 6300 compute nodes can affect its performance. See a study of application runtimes vs node placement. Read More » Hopper Performance Monitoring Benchmarking performance of scientific applications on Hopper Read More » Hopper:Improving I/O performance to GSCRATCH and PROJECT

405

Sustainability Performance Office | Department of Energy  

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

Sustainability Performance Office Sustainability Performance Office Sustainability Performance Office Sustainability Performance Office Sustainability Performance Office...

406

Buildings Performance Database Overview  

Broader source: Energy.gov [DOE]

Buildings Performance Database Overview, from the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy.

407

Performance Tested Comfort Systems  

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

Showerheads Residential Weatherization Performance Tested Comfort Systems Ductless Heat Pumps New Construction Residential Marketing Toolkit Retail Sales Allocation Tool...

408

High Performance Home Cost Performance Trade-Offs: Production...  

Energy Savers [EERE]

High Performance Home Cost Performance Trade-Offs: Production Builders - Building America Top Innovation High Performance Home Cost Performance Trade-Offs: Production Builders -...

409

Performance Computing with  

E-Print Network [OSTI]

High Performance Computing with Iceberg. Mike Griffiths Bob Booth November 2005 AP-Unix4 © University of Sheffield #12;Bob Booth High Performance Computing with Iceberg Contents 1. REVIEW OF AVAILABLE 23 7.1 USING FUSE TO MOUNT FILE SYSTEMS ON ICEBERG 23 2 #12;Bob Booth High Performance Computing

Martin, Stephen John

410

High Performance Computing in  

E-Print Network [OSTI]

High Performance Computing in Bioinformatics Thomas Ludwig (t.ludwig@computer.org) Ruprecht PART I: High Performance Computing Thomas Ludwig PART II: HPC Computing in Bioinformatics Alexandros #12;© Thomas Ludwig, Alexandros Stamatakis, GCB'04 3 PART I High Performance Computing Introduction

Stamatakis, Alexandros

411

Internet Performance Measurement Collaborators  

E-Print Network [OSTI]

Internet Performance Measurement Collaborators Cross Industry Working Team (XIWT) High Performance of the timestamp mechanism in the ANS Surveyor Probe device FY98 · GITS Internet Performance Measurement Toolkit developed FY99 · GITS measurement systems deployed in the field FY00 Goal To advance the state of the art

412

IR DIAL performance modeling  

SciTech Connect (OSTI)

We are developing a DIAL performance model for CALIOPE at LLNL. The intent of the model is to provide quick and interactive parameter sensitivity calculations with immediate graphical output. A brief overview of the features of the performance model is given, along with an example of performance calculations for a non-CALIOPE application.

Sharlemann, E.T.

1994-07-01T23:59:59.000Z

413

Eddy-Current-Induced Multipole Field Calculations  

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

Eddy-Current-Induced Multipole Field Calculations Eddy-Current-Induced Multipole Field Calculations September 29, 2003 1 Eddy-Current-Induced Multipole Field Calculations Nicholas S. Sereno, Suk H. Kim 1.0 Abstract Time-varying magnetic fields of magnets in booster accelerators induce substantial eddy currents in the vacuum chambers. The eddy currents in turn act to produce various multi- pole fields that act on the beam. These fields must be taken into account when doing a lat- tice design. In the APS booster, the relatively long dipole magnets (3 meters) are linearly ramped to accelerate the injected 325 MeV beam to 7 GeV. Substantial dipole and sextu- pole fields are generated in the elliptical vacuum chamber from the induced eddy currents. In this note, formulas for the induced dipole and sextupole fields are derived for elliptical and rectangular vacuum chambers for a time-varying dipole field. A discussion is given

414

Power threshold for neutral beam current drive  

SciTech Connect (OSTI)

For fully noninductive current drive in tokamaks using neutral beams, there is a power and density threshold condition, setting a minimum value for P{sup 3/2}/n{sup 2}. If this condition is not met, stationary state cannot occur, and a tokamak discharge will collapse. This is a consequence of the coupling between current and electron temperature, or between current drive efficiency and energy confinement time. 4 figs.

Politzer, P.A. (General Atomics, San Diego, CA (USA)); Porter, G.D. (Lawrence Livermore National Lab., CA (USA))

1989-10-02T23:59:59.000Z

415

Contractor Past Performance Information  

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

March 2013) March 2013) 1 Contractor Performance Information This updated chapter incorporates the Office of Federal Procurement Policy (OFPP) policy that effective October 1, 2010, Contractor Performance Assessment Reporting System (CPARS) is the single government-wide feeder system for past performance information reporting. This chapter supplements the CPARS Guide and related user manuals for all modules available at the CPARS website. The CPARS Guide includes consistent processes and procedures for agencies to use when reporting on past performance information and should be read in conjunction with Federal Acquisition Regulation (FAR) Part 42.15 and other FAR Parts related to past performance information. When needed, this Acquisition Guide Chapter provides

416

Theory of current-drive in plasmas  

SciTech Connect (OSTI)

The continuous operation of a tokamak fusion reactor requires, among other things, a means of providing continuous toroidal current. Such operation is preferred to the conventional pulsed operation, where the plasma current is induced by a time-varying magnetic field. A variety of methods has been proposed to provide continuous current, including methods which utilize particle beams or radio frequency waves in any of several frequency regimes. Currents as large as half a mega-amp have now been produced in the laboratory by such means, and experimentation in these techniques has now involved major tokamak facilities worldwide.

Fisch, N.J.

1986-12-01T23:59:59.000Z

417

Hybrid high direct current circuit interrupter  

DOE Patents [OSTI]

A device and a method are disclosed for interrupting very high direct currents (greater than 100,000 amperes) and simultaneously blocking high voltages (greater than 600 volts). The device utilizes a mechanical switch to carry very high currents continuously with low loss and a silicon controlled rectifier (SCR) to bypass the current around the mechanical switch while its contacts are separating. A commutation circuit, connected in parallel with the SCR, turns off the SCR by utilizing a resonant circuit to divert the SCR current after the switch opens. 7 figs.

Rockot, J.H.; Mikesell, H.E.; Jha, K.N.

1998-08-11T23:59:59.000Z

418

Hybrid high direct current circuit interrupter  

DOE Patents [OSTI]

A device and a method for interrupting very high direct currents (greater than 100,000 amperes) and simultaneously blocking high voltages (greater than 600 volts). The device utilizes a mechanical switch to carry very high currents continuously with low loss and a silicon controlled rectifier (SCR) to bypass the current around the mechanical switch while its contacts are separating. A commutation circuit, connected in parallel with the SCR, turns off the SCR by utilizing a resonant circuit to divert the SCR current after the switch opens.

Rockot, Joseph H. (N. Huntingdon, PA); Mikesell, Harvey E. (McMurray, PA); Jha, Kamal N. (Bethel Park, PA)

1998-01-01T23:59:59.000Z

419

Current Status and Potential Future Developments for  

E-Print Network [OSTI]

in response to public concern about tropical deforestation and demand for an international woodCurrent Status and Potential Future Developments for Forest Certification Richard P. Vlosky

420

Tubular solid oxide fuel cell current collector  

DOE Patents [OSTI]

An internal current collector for use inside a tubular solid oxide fuel cell (TSOFC) electrode comprises a tubular coil spring disposed concentrically within a TSOFC electrode and in firm uniform tangential electrical contact with the electrode inner surface. The current collector maximizes the contact area between the current collector and the electrode. The current collector is made of a metal that is electrically conductive and able to survive under the operational conditions of the fuel cell, i.e., the cathode in air, and the anode in fuel such as hydrogen, CO, CO.sub.2, H.sub.2O or H.sub.2S.

Bischoff, Brian L. (Knoxville, TN); Sutton, Theodore G. (Kingston, TN); Armstrong, Timothy R. (Clinton, TN)

2010-07-20T23:59:59.000Z

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


421

Current trends in the Advanced Bioindustry  

Broader source: Energy.gov [DOE]

Afternoon Plenary Session: Current Trends in the Advanced Bioindustry State of TechnologyMichael McAdams, President, Advanced Biofuels Association

422

Ocean Currents Produced by Evaporation and Precipitation  

Science Journals Connector (OSTI)

1 September 1933 research-article Ocean Currents Produced by Evaporation and Precipitation G. R. Goldsbrough The Royal Society is collaborating with JSTOR to digitize, preserve...

1933-01-01T23:59:59.000Z

423

On Ocean Currents Produced by Winds  

Science Journals Connector (OSTI)

1 January 1935 research-article On Ocean Currents Produced by Winds G. R. Goldsbrough The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access...

1935-01-01T23:59:59.000Z

424

Additional Guidance Regarding Application of Current Procedures...  

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

Additional Guidance Regarding Application of Current Procedures for Testing Energy Consumption of Clothes Washers with Warm Rinse Cycles, Issued: June 30, 2010 Additional Guidance...

425

Magnetising inrush current in transformers: an overview  

Science Journals Connector (OSTI)

In India, the failure rate of distribution transformers has been reported very high especially in the rural and remote areas. In these areas, frequent inrush current is produced in distribution transformers during their energisation. The generation of inrush current during each energisation may be dangerous for health of the distribution transformers. This has motivated the authors for extensive study on inrush current such as causes, modelling, effects and reduction techniques. A case study has also been given on role of creep in the windings due to inrush current as one of the reasons for failure of distribution transformers.

N.S. Beniwal; D.K. Dwivedi; H.O. Gupta

2011-01-01T23:59:59.000Z

426

Pinch current limitation effect in plasma focus  

Science Journals Connector (OSTI)

The Lee model couples the electrical circuit with plasma focusdynamics thermodynamics and radiation. It is used to design and simulate experiments. A beam-target mechanism is incorporated resulting in realistic neutron yield scaling with pinch current and increasing its versatility for investigating all Mather-type machines. Recent runs indicate a previously unsuspected pinch current limitation effect. The pinch current does not increase beyond a certain value however low the static inductance is reduced to. The results indicate that decreasing the present static inductance of the PF1000 machine will neither increase the pinch current nor the neutron yield contrary to expectations.

S. Lee; S. H. Saw

2008-01-01T23:59:59.000Z

427

Sandia National Laboratories: river current energy converters  

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

is a partnered effort to develop marine hydrokinetic (MHK) reference models (RMs) for wave energy converters and tidal, ocean, and river current energy converters. The RMP team...

428

Preliminary melter performance assessment report  

SciTech Connect (OSTI)

The Melter Performance Assessment activity, a component of the Pacific Northwest Laboratory`s (PNL) Vitrification Technology Development (PVTD) effort, was designed to determine the impact of noble metals on the operational life of the reference Hanford Waste Vitrification Plant (HWVP) melter. The melter performance assessment consisted of several activities, including a literature review of all work done with noble metals in glass, gradient furnace testing to study the behavior of noble metals during the melting process, research-scale and engineering-scale melter testing to evaluate effects of noble metals on melter operation, and computer modeling that used the experimental data to predict effects of noble metals on the full-scale melter. Feed used in these tests simulated neutralized current acid waste (NCAW) feed. This report summarizes the results of the melter performance assessment and predicts the lifetime of the HWVP melter. It should be noted that this work was conducted before the recent Tri-Party Agreement changes, so the reference melter referred to here is the Defense Waste Processing Facility (DWPF) melter design.

Elliott, M.L.; Eyler, L.L.; Mahoney, L.A.; Cooper, M.F.; Whitney, L.D.; Shafer, P.J.

1994-08-01T23:59:59.000Z

429

ARM - 2008 Performance Metrics  

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

8 Performance Metrics 8 Performance Metrics Science Research Themes Research Highlights Journal Articles Collaborations Atmospheric System Research (ASR) ARM Science Team Meetings User Meetings Annual Meetings of the Atmospheric System Research (ASR) Science Team and Fall Working Groups Accomplishments Read about the 20 years of accomplishments (PDF, 696KB) from the ARM Program and user facility. Performance Metrics ASR Metrics 2009 2008 2007 2006 2008 Performance Metrics Each year, the ARM Program must submit to DOE an overall performance measure related to scientific achievement. The overall performance measure includes specific metrics for reporting progress each quarter. This reporting process includes support documentation (usually a report or data file) appropriate for the metric. Overall Performance Measures

430

High Performance Computing  

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

Information Science, Computing, Applied Math » Information Science, Computing, Applied Math » High Performance Computing High Performance Computing Providing world-class high performance computing capability that enables unsurpassed solutions to complex problems of strategic national interest Gary Grider High Performance Computing Division Leader Randal Rheinheimer High Performance Computing Deputy Division Leader Contact Us Carol Hogsett Student/Internship Opportunities Email Division Office Email Managing world-class supercomputing centers Powerall simulations modeling Read caption + The Powerwall is used by LANL scientists to view objects and processes in 3D. High Performance Computing video 13:01 Gary Grider, HPC Divison Leader The High Performance Computing (HPC) Division supports the Laboratory mission by managing world-class Supercomputing Centers.

431

Current performance and future trends in health care sciences and services research  

Science Journals Connector (OSTI)

Health care sciences and services research (HCSSR) has come to the fore in recent years and related research literature increased rapidly over the last few decades. The main purpose of this study is to describe the global progress and to determine the ... Keywords: Global research trends, Health care sciences and services research, Knowledge mapping, Scientometric, Web of Science

Qiang Yao, Peng-Hui Lyu, Lian-Ping Yang, Lan Yao, Zhi-Yong Liu

2014-10-01T23:59:59.000Z

432

Current Performance and On-Going Improvements of the 8.2 m Subaru Telescope  

Science Journals Connector (OSTI)

......set on a rotating polishing bed with 261 hydraulic supports distributed identically to the...al. 2000). Figure 25 shows the CIAX cart carrying one of the Cassegrain instruments...stations is occupied by FOCAS. Fig. 25 CIAX cart for Cassegrain instrument exchange operation......

Masanori Iye; Hiroshi Karoji; Hiroyasu Ando; Norio Kaifu; Keiichi Kodaira; Kentaro Aoki; Wako Aoki; Yoshihiro Chikada; Yoshiyuki Doi; Noboru Ebizuka; Brian Elms; Gary Fujihara; Hisanori Furusawa; Tetsuharu Fuse; Wolfgang Gaessler; Sumiko Harasawa; Yutaka Hayano; Masahiko Hayashi; Saeko Hayashi; Shinichi Ichikawa; Masatoshi Imanishi; Catherine Ishida; Yukiko Kamata; Tomio Kanzawa; Nobunari Kashikawa; Koji Kawabata; Naoto Kobayashi; Yutaka Komiyama; George Kosugi; Tomio Kurakami; Michael Letawsky; Yoshitaka Mikami; Akihiko Miyashita; Satoshi Miyazaki; Yoshihiko Mizumoto; Junichi Morino; Kentaro Motohara; Koji Murakawa; Masao Nakagiri; Kyoko Nakamura; Hidehiko Nakaya; Kyoji Nariai; Tetsuo Nishimura; Kunio Noguchi; Takeshi Noguchi; Junichi Noumaru; Ryusuke Ogasawara; Norio Ohshima; Yoichi Ohyama; Kiichi Okita; Koji Omata; Masashi Otsubo; Shin Oya; Robert Potter; Yoshihiko Saito; Toshiyuki Sasaki; Shuji Sato; Dennis Scarla; Kiaina Schubert; Kazuhiro Sekiguchi; Maki Sekiguchi; Ian Shelton; Chris Simpson; Hiroshi Suto; Akito Tajitsu; Hideki Takami; Tadafumi Takata; Naruhisa Takato; Richard Tamae; Motohide Tamura; Wataru Tanaka; Hiroshi Terada; Yasuo Torii; Fumihiko Uraguchi; Tomonori Usuda; Mark Weber; Tom Winegar; Masafumi Yagi; Toru Yamada; Takuya Yamashita; Yasumasa Yamashita; Naoki Yasuda; Michitoshi Yoshida; Masami Yutani

2004-04-25T23:59:59.000Z

433

Designing PV Incentive Programs to Promote System Performance: A Review of Current Practice  

E-Print Network [OSTI]

of PV Energy Production System Conversion Solar EnergySolar & Small Wind Incentive Program Washington Renewable Energy Productionof actual energy production. Two programs, LADWPs Solar

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-01-01T23:59:59.000Z

434

Designing PV Incentive Programs to Promote System Performance: A Review of Current Practice  

E-Print Network [OSTI]

communication with New York State Energy Research andSolar Pioneer Program New York Energy $mart PV IncentivePower Authority (LIPA) New York State Energy Research and

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-01-01T23:59:59.000Z

435

Designing PV Incentive Programs to Promote System Performance: A Review of Current Practice  

E-Print Network [OSTI]

Utility District (SMUD) Xcel Energy Connecticut Clean EnergyCA LADWP CA SMUD CO Xcel CT CCEF Small PV ProgramCA LADWP CA SMUD CO Xcel CT CCEF Small PV Program

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-01-01T23:59:59.000Z

436

Designing PV Incentive Programs to Promote System Performance: A Review of Current Practice  

E-Print Network [OSTI]

Program Washington Renewable Energy Production Incentivesfor Renewable Energy October 2006 actual energy productionrenewable energy credits (RECs) through energy production-

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-01-01T23:59:59.000Z

437

Current and future economic performance of first and second generation biofuels in developing countries  

Science Journals Connector (OSTI)

Abstract Net Present Value (NPV) and total production cost calculations are made for first and second generation biofuels in 74 settings, covering 5 fuel output types, 8 feedstock types, 12 countries and 8 combinations of agricultural management systems between 2010 and 2030. Yields are assumed to increase due to better crop management and improved varieties. High \\{NPVs\\} (meaning profitable production) are calculated for cassava (up to 16,000$/ha) and palm production (up to almost 7000$/ha). But cassava can also have a negative NPV which indicates that the project investment is not without risk. The calculated \\{NPVs\\} for jatropha range from ?900 to 2000$/ha, while for sugarcane and soy the NPV is always positive, (25005000$/ha and 2003000$/ha respectively) and therefore profitable. Total production costs in 2010 are estimated to vary from 5 to 45$/GJ for 1st generation feedstocks in 2010, and from around 1035$/GJ in 2020, compared to 2030$/GJ for fossil fuels. Argentina and Malaysia are the regions with the lowest production costs for biofuel (soy and palm biodiesel for 1115$/GJ and 823$/GJ respectively), although potential for cost reduction exists in other regions. Production costs of 2nd generation biofuels are estimated to be 1726$/GJ in 2020 and 1423$/GJ in 2030. Poplar based synfuel production in Ukraine has the lowest costs (1417$/GJ) and rice straw based bioethanol the highest (2326$/GJ) for both the short and long term. The time between investment and benefits, as well as the size of investment and the alternative commodity markets, varies with the type of feedstock. The choice of feedstock therefore depends on the local agricultural system, and the preferences and means of the local farmers. Key to the competitive production of 2nd generation fuels is the optimisation of the conversion process, which dominates overall production costs (with 3565% of total costs). Also important is the efficient organisation of supply chain logistics, especially for the low energy density feedstocks such as wheat straw requires densification early in the chain. Key factors in the economic analysis are: labour costs and requirements, agricultural efficiency, conversion cost and biomass yields. Acquiring accurate location specific data is essential for detailed analyses.

Janske van Eijck; Bothwell Batidzirai; Andr Faaij

2014-01-01T23:59:59.000Z

438

Designing PV Incentive Programs to Promote Performance: A Review of Current Practice  

E-Print Network [OSTI]

unacceptable. In the new California Solar Initiative (CSI),license, or (in California) a solar contractors license. Aperiod. Californias recently enacted solar legislation (

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2007-01-01T23:59:59.000Z

439

Designing PV Incentive Programs to Promote System Performance: A Review of Current Practice  

E-Print Network [OSTI]

Elements for the California Solar Initiative. Decision 06-Program (SGIP) California Solar Initiative (CSI) Solarmodules only) The California solar legislation SB1 requires

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-01-01T23:59:59.000Z

440

Designing PV Incentive Programs to Promote Performance: A Review of Current Practice  

E-Print Network [OSTI]

based on the actual energy production of the PV system overof estimated annual energy production, expressed either onto maximize annual energy production. Although some programs

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2007-01-01T23:59:59.000Z

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


441

Metallization by plating for high-performance multichip modules  

Science Journals Connector (OSTI)

Electrolytic plating is used to produce the interconnect wiring on the current generation of high-performance multichip modules used in IBM S/390 and AS/400 servers. This paper reviews the material and manufacturing ...

K. K. H. Wong; S. Kaja; P. W. DeHaven

1998-09-01T23:59:59.000Z

442

Performance analysis of synchronous machines under dynamic eccentricity  

E-Print Network [OSTI]

The performance of salient pole synchronous machines under eccentric rotors is studied. Relationships between stator and rotor current induced harmonics and dynamic eccentricity are investigated. The winding function theory has been modified...

Al-Nuaim, Nabil Abdulaziz

2012-06-07T23:59:59.000Z

443

Solar generator performance with load matching to water electrolysis  

Science Journals Connector (OSTI)

A 7 W generator, based on monocrystalline silicon solar cells, was directly wired to an electronic load, simulating the current-voltage characteristic of an advanced water electrolyser. System performance was ...

K. Freudenberg

1982-08-01T23:59:59.000Z

444

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

E-Print Network [OSTI]

lighting, we assume that incandescent bulbs have a one-yeargigaton Indonesia India incandescent Lamp Japan Koreaprice data for 60-watt incandescent bulbs, excluding non-

Letschert, Virginie E.

2013-01-01T23:59:59.000Z

445

Modelling ocean currents in the northern Adriatic Sea  

Science Journals Connector (OSTI)

Abstract Ocean circulation in the northern Adriatic Sea is characterised by the interactions of tidal currents, bathymetric constraints, wind forcing and density gradients induced by river input and heat exchange. The MIKE 3/21 modelling system, together with measurements of wind, waves, currents and water levels at one location, has been used to investigate the currents dynamics of the northern Adriatic basin and to assess model sensitivity to the parameterisation of different processes and implementation strategies. An assessment has been carried out against available in-situ observations (waves, currents, surface elevation, and water temperature), and also in comparison with a high-resolution modelling system (COAWST) implemented in the same area during the corresponding period. The MIKE 3/21 system was implemented for a 1-year simulation period and validation of surface elevation, wind, and waves with data indicated a good model performance, statistically very similar to the COAWST implementation. Depth-averaged, surface and bottom currents were more difficult to reproduce by both models, with the observed high variability not being fully captured by the model systems. Some of the differences between the models results may be due to model configuration, spatial resolution and the way they treat atmosphereocean momentum and heat transfers, turbulence, and are therefore discussed in the paper. From the thorough analysis of MIKE 3/21 system, wind is found to be the main forcing factor inducing currents in the northern Adriatic; tides and baroclinic motions were of second order, although some specific events seems to be forced by these processes. Waves were found to be highly correlated with local wind, and a rather weak wavecurrent interaction was observed. Even if the inclusion of wave effects trough radiation stress did not seem to lead to significant improvements in the modelled currents with MIKE 3/21, the full waveocean coupling in COAWST was significant in explaining small scale features, especially in the Gulf of Venice. Spectral and SVD analysis showed energy around diurnal and semidiurnal frequencies and that about 50% of variance in the current profile was explained by the first mode, which was well captured by both modelling systems.

Rodolfo Bolaos; Jacob V. Tornfeldt Srensen; Alvise Benetazzo; Sandro Carniel; Mauro Sclavo

2014-01-01T23:59:59.000Z

446

Metal current collect protected by oxide film  

DOE Patents [OSTI]

Provided are low-cost, mechanically strong, highly electronically conductive current collects and associated structures for solid-state electrochemical devices, techniques for forming these structures, and devices incorporating the structures. The invention provides solid state electrochemical devices having as current interconnects a ferritic steel felt or screen coated with a protective oxide film.

Jacobson, Craig P. (Lafayette, CA); Visco, Steven J. (Berkeley, CA); DeJonghe, Lutgard C. (Lafayette, CA)

2004-05-25T23:59:59.000Z

447

A PHOTOELECTRIC CURRENT METER Marine Biological Laboratory!  

E-Print Network [OSTI]

330 A PHOTOELECTRIC CURRENT METER Marine Biological Laboratory! WOODS HOLE, MASS. SPECIAL CURRENT METER by H. C. Boyar Fishery Research Biologist Bureau of Commercial Fisheries Biological. March 1960 #12;#12;TABLE OF CONTENTS Page Introduction 1 Description and operation of the meter

448

METHODS OF RADIO-FREQUENCY CURRENT DRIVE  

E-Print Network [OSTI]

METHODS OF RADIO-FREQUENCY CURRENT DRIVE N. J. FISCH* Princeton Plasma Physics Laboratory-670 Radio-frequency waves can penetrate thermonuclear plasmas, depositing momentum and energy with great. INTRODUCTION Using radio-frequency (rf) waves to drive the toroidal current in tokamak reactors is attractive

449

How sustainable are current transport biofuels?  

E-Print Network [OSTI]

How sustainable are current transport biofuels? Jérémie Mercier 7th BIEE Academic Conference biofuels and what is expected from them? 2) Sustainability impacts of agrofuels and the UK certification Conference - Oxford 24th September 2008 1) What are current transport biofuels and what is expected from them

450

An Introduction to Wave-Current Interactions  

E-Print Network [OSTI]

-scale wave focusing across a storm can re-direct the wind-stress? #12;1. Adiabatic interaction StartAn Introduction to Wave-Current Interactions Jerry Smith, MPL-SIO-UCSD jasmith@ucsd.edu http just want to hold up your hand. #12;Some Questions in Wave-Current Interaction Physics 1. Adiabatic

Smith, Jerome A.

451

CURRENTS DRIVEN BY ELECTRON CYCLOTRON WAVES  

E-Print Network [OSTI]

CURRENTS DRIVEN BY ELECTRON CYCLOTRON WAVES C.F.F. KARNEY, NJ. FISCH Plasma Physics Laboratory of the generation of steady-state currents by electron cyclotron waves are explored. A numerical solution of electron cyclotron wave absorption appears to be one of the more promising schemes of providing a steady

Karney, Charles

452

Frontiers of biomedical text mining: current progress  

E-Print Network [OSTI]

Frontiers of biomedical text mining: current progress Pierre Zweigenbaum, Dina Demner-Fushman, Hong of biomedical text mining continue to present interesting challenges and opportunities for great improvements and interesting research. In this article we review the current state of the art in biomedical text mining or `Bio

Yu, Hong

453

Current Rulemakings and Notices | Department of Energy  

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

Appliance & Equipment Standards » Rulemakings & Notices » Current Appliance & Equipment Standards » Rulemakings & Notices » Current Rulemakings and Notices Current Rulemakings and Notices The Department of Energy has compiled a summary table that links to each current rulemaking and its associated product page. Each rulemaking page: Provides an update on the most recent activity related to that rulemaking Describes the rulemaking's purpose Lists rulemaking milestones and provides links to key rulemaking documents and the rulemaking docket Links to any related rulemakings Describes how to participate in any public meeting (or webinar) Describes how to submit public comments to the docket Provides the statutory authority for the rulemaking Links to current implementation, compliance, and enforcement (ICE) rulemakings are provided underneath the tables.

454

Buildings Performance Database  

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

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

455

Guidelines for Performance Measurement  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Federal agencies, states, businesses, and foreign governments are increasingly relying on performance measurement information to help chart progress in increasingly frugal times. No cancellations.

1996-06-30T23:59:59.000Z

456

Contractor Past Performance Information  

Office of Environmental Management (EM)

needs against market conditions. Requiring vendors to provide sufficient pricing usage, and performance data to enable the government to ensure we are receiving the best...

457

Superior Energy Performance  

Broader source: Energy.gov [DOE]

Industrial facilities certified to Superior Energy Performance (SEP) are leaders in energy management. These facilities have met the ISO 50001 standard and have improved their energy performance up to 25% over three years or up to 40% over 10 years. SEP provides guidance, tools, and protocols to drive deeper, more sustained savings from ISO 50001. To become certified, facilities must implement an energy management system that meets the ISO 50001 standard and demonstrate improved energy performance. An independent third party audits each facility to verify achievements and qualify it at the Silver, Gold, or Platinum level, based on performance. This certification emphasizes measureable savings through a transparent process.

458

Contractor Past Performance Information  

Energy Savers [EERE]

and Project Management. Acquisition Guide ---Chapter 42.15 (September 2013) 4 PAST PERFORMANCE REPORTING AND FAPIIS DATA MANAGEMENT REPORTS Report Description...

459

Annual Performance Report  

Office of Legacy Management (LM)

left blank U.S. Department of Energy Annual Performance Report, Shiprock, New Mexico October 2014 Doc. No. S12021 Page i Contents Abbreviations ......

460

Occupational Safety Performance  

Office of Environmental Management (EM)

this report (July 2012). All data has not yet been submitted to CAIRS. 1 Occupational Safety Performance Comparable Industry, Average TRC Rate Comparable Industry, Average DART...

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


461

Performance and Optimization  

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

Math Library Performance Core Specialization Hyper-Threading DLFM library tools for large scale dynamic applications Chapel Shared and Dynamic Libraries Cluster Compatibility Mode...

462

Automation Performance Index.  

E-Print Network [OSTI]

??Automation is intended to improve overall building performance. Building Automation Systems (BAS) are attractive and popular due to their promise of increased operational effectiveness. BAS (more)

Makarechi, Shariar

2006-01-01T23:59:59.000Z

463

PDSF Performance and Optimization  

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

Optimization Performance and Optimization Running Jobs Efficiently This page defines job efficiency and how to measure the efficiency of your jobs. Read More PDSF IO Monitoring...

464

Monthly Performance Report  

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

be performed to evaluate one of several alternative routings for the proposed natural gas pipeline. Commercial utility providers (primarily phone and fiber-optic lines) in...

465

MSC Monthly Performance Report  

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

is within 90- 100% of required tests - - - - - - - - - J17-1 SSE Operational Readiness Index - - - - - - - - - J18-1 SSE FY 2010 Hanford Training Baseline Performance...

466

.NET High Performance Computing.  

E-Print Network [OSTI]

?? Graphics Processing Units (GPUs) have been extensively applied in the High Performance Computing (HPC) community. HPC applications require additional special programming environments to improve (more)

Ou, Hsuan-Hsiu

2012-01-01T23:59:59.000Z

467

current encounters a large island (main islands of Palau) basin-scale currents are driven by winds  

E-Print Network [OSTI]

Summary · current encounters a large island (main islands of Palau) · basin-scale currents are driven by winds · strong boundary currents like Gulf Stream · Palau has a boundary current · current

Johnston, Shaun

468

Limiting characteristics of the superconducting fault current limiter applied to the neutral line of conventional transformer  

Science Journals Connector (OSTI)

Abstract The increased electricity demands influenced by the recent industrial development make the electric power distribution system more comprehensive, and the risks are high to cause failures to steady state electric line due to the extended range of fault at the time of fault occurrence. Also, the high performance and the high precision electric appliances that sensitive to switching surge and fault current expose vulnerability of reduced life span and increased fault occurrence ratio. Therefore, this thesis analyzed the fault limiting characteristics by the fault types by applying the superconducting fault current limiter to the neutral line of the transformer in order to reduce the fault currents that flow such high performance appliances. A current transformer (CT) that detects the fault current in the simulated power distribution system, a switching control system that is self-developed and a transformer are used in constructing a circuit. When a fault occurs, the initial fault current is restricted by the superconducting fault current limiter and simultaneously detours the fault current by operating the SCR contact of the switching control system through the detection by CT. This thesis analyzed the limiting characteristics of the superconducting fault current limiter that are applied to the neutral line of the transformer by the fault types.

I.G. Im; H.S. Choi; B.I. Jung

2013-01-01T23:59:59.000Z

469

Performance Confirmation Plan  

SciTech Connect (OSTI)

As described, the purpose of the Performance Confirmation Plan is to specify monitoring, testing, and analysis activities for evaluating the accuracy and adequacy of the information used to determine that performance objectives for postclosure will be met. This plan defines a number of specific performance confirmation activities and associated test concepts in support of the MGR that will be implemented to fulfill this purpose. In doing so, the plan defines an approach to identify key factors and processes, predict performance, establish tolerances and test criteria, collect data (through monitoring, testing, and experiments), analyze these data, and recommend appropriate action. The process of defining which factors to address under performance confirmation incorporates input from several areas. In all cases, key performance confirmation factors are those factors which are: (1) important to safety, (2) measurable and predictable, and (3) relevant to the program (i.e., a factor that i s affected by construction, emplacement, or is a time-dependent variable). For the present version of the plan, performance confirmation factors important to safety are identified using the principal factors from the RSS (CRWMS M and O 2000a) (which is derived from TSPA analyses) together with other available performance assessment analyses. With this basis, key performance confirmation factors have been identified, and test concepts and test descriptions have been developed in the plan. Other activities are also incorporated into the performance confirmation program outside of these key factors. Additional activities and tests have been incorporated when they are prescribed by requirements and regulations or are necessary to address data needs and model validation requirements relevant to postclosure safety. These other activities have been included with identified factors to construct the overall performance confirmation program.

Lindner, E.N.

2000-05-19T23:59:59.000Z

470

Microsoft PowerPoint - 12_gary_Tuesday 5-21 Facility Performance...  

National Nuclear Security Administration (NNSA)

Analysis and Performance Gary L. Hirsch Project Lead NMMSS is currently accepting data * Electronically o 80 Column o XML 1 o XML 2 * Paper PDF 2 Reporting Statistics...

471

Indicators: Performance Statistics  

E-Print Network [OSTI]

% Quality Inspections Completed 66% +12% 95% 86% 95% 52% 81% 51% 76% Utilities: Performance Statistics of performance measures and specific color code target values. Trend status color indicators ­ identifies changes from the prior month: Key: - 54% Electric - 0% All Zones Combined Zone Breakdown Steam/Chilled Water 0

Webb, Peter

472

Performance relationship diagrams  

SciTech Connect (OSTI)

By describing a business function's cost drivers and graphically depicting the interrelated cost drivers serving as controls and resources to them, a visual performance model can be provided. A graphical technique, called performance relationship diagraming, has been devised that logically describes these cost drivers and their interrelationships. 2 figs.

Cary, M.J.

1991-11-01T23:59:59.000Z

473

Certificate of Current Cost and Pricing Data  

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

CERTIFICATE OF CURRENT COST AND PRICING DATA (OCT 1997) CERTIFICATE OF CURRENT COST AND PRICING DATA (OCT 1997) This is to certify that, to the best of my knowledge and belief, the cost or pricing data (as defined in section 15.401 of the Federal Acquisition Regulation (FAR) and required under FAR subsection 15.403-4) submitted, either actually or by specific identification in writing, to the Contracting Officer or to the Contracting Officer's representative in support of * are accurate, complete, and current as of **. This certification includes the cost or pricing data supporting any advance agreements and forward pricing rate agreements between the offeror and the Government that are

474

Transformer current sensor for superconducting magnetic coils  

DOE Patents [OSTI]

The present invention is a current transformer for operating currents larger than 2kA (two kiloamps) that is capable of detecting a millivolt level resistive voltage in the presence of a large inductive voltage. Specifically, the present invention includes substantially cylindrical primary turns arranged to carry a primary current and substantially cylindrical secondary turns arranged coaxially with and only partially within the primary turns, the secondary turns including an active winding and a dummy winding, the active and dummy windings being coaxial, longitudinally separated and arranged to mutually cancel voltages excited by commonly experienced magnetic fields, the active winding but not the dummy winding being arranged within the primary turns.

Shen, S.S.; Wilson, C.T.

1985-04-16T23:59:59.000Z

475

Current Events | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Events | National Nuclear Security Administration Events | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Current Events Home > About Us > Our Programs > Defense Programs > Future Science & Technology Programs > Office of Advanced Simulation and Computing and Institutional R&D Programs > Current Events Current Events

476

A New Model of Current Retroflection Applied to the Westward Protrusion of the Agulhas Current  

Science Journals Connector (OSTI)

The dynamics of current retroflection and rings shedding are not yet fully understood. In this paper, the authors develop an analytical model of the Agulhas Current retroflection dynamics using three simple laws: conservation of volume, momentum ...

Wilton Arruda; Volodymyr Zharkov; Bruno Deremble; Doron Nof; Eric Chassignet

2014-12-01T23:59:59.000Z

477

The Dissipation of Energy in Permanent Ocean Currents, with Some Relations between Salinities, Temperatures and Currents  

Science Journals Connector (OSTI)

6 April 1921 research-article The Dissipation of Energy in Permanent Ocean Currents, with Some Relations between Salinities, Temperatures and Currents R. O. Street The Royal Society is collaborating with JSTOR to digitize, preserve...

1921-01-01T23:59:59.000Z

478

Optimal power flow considering fault current level constraints and fault current limiters  

Science Journals Connector (OSTI)

Abstract The aim of this paper is to present a novel method to dispatch the active generation power properly in the power system while incorporating fault current levels as constraints for the optimization problem. Due to the limited capacity of protective devices such as circuit breakers, allocating active power without considering fault current levels can probably lead to fault currents exceeding the rating of these devices. Hence restricting the fault current levels to an allowable amount while minimizing a specified objective function seems to be necessary. In a number of cases even the appropriate allocation of active power is not able to reduce the fault current levels to the permitted amount therefore using fault current limiters (FCL) is unavoidable. In this paper also a planning scheme is presented for the location and sizing of fault current limiters and the effect of fault current limiters on the objective functions is investigated.

Amirhossein Khazali; Mohsen Kalantar

2014-01-01T23:59:59.000Z

479

Alternating Current Loss of Strip Arrays as a Model for Resistive Fault Current Limiters  

Science Journals Connector (OSTI)

Hysteretic alternating current (ac) loss P...in arrays of superconducting strip lines are calculated on the bases of the critical state model. For a simplified model of a film-type fault current limiter, we consi...

Yasunori Mawatari; Hirofumi Yamasaki

2000-01-01T23:59:59.000Z

480

Coatings for performance retention  

Science Journals Connector (OSTI)

Performance and performance retention are becoming increasingly important in todays gas turbine engines. The military aircraft engine operator wants the flexibility and flight envelope that increased performance will give and the commercial useraircraft utility generation or pumperdemands the long term fuel economy that improved performance retention will provide. Materials advances have provided the intrinsic strength and temperature increases to push the capability of todays engines and coatings have been an integral part of that advancement. Specifically in the performance retention area coatings and seal systems have become increasingly important in both compressor and turbine components. It is the intent of this overview paper to present a brief review of the coating systems presently in use and in development and to consider areas in which the technology might be heading.

R. V. Hillery

1986-01-01T23:59:59.000Z

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


481

Irradiation Performance - Nuclear Engineering Division (Argonne)  

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

Materials Testing > Materials Testing > Irradiation Performance Capabilities Materials Testing Environmentally Assisted Cracking (EAC) of Reactor Materials Corrosion Performance/Metal Dusting Irradiated Materials Overview Light Water Reactor Materials Other Current Activities Future Directions Steam Generator Tube Integrity Other Facilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Irradiation Performance Bookmark and Share The activities of the Irradiation Performance Section (IPS) are aimed at determining and assessing normal-operation and accident behavior of neutron-irradiated material throughout the life cycle of the materials. The conditions of interest are normal in-reactor operation, design-basis accidents, intermediate storage in pools and dry casks, and ultimate

482

Magnetic Reconnection Onset via Disruption of a Forming Current Sheet by the Tearing Instability  

E-Print Network [OSTI]

The recent realization that Sweet-Parker current sheets are violently unstable to the secondary tearing (plasmoid) instability implies that such current sheets cannot occur in real systems. This suggests that, in order to understand the onset of magnetic reconnection, one needs to consider the growth of the tearing instability in a current layer as it is being formed. Such an analysis is performed here in the context of nonlinear resistive MHD for a generic time-dependent equilibrium representing a gradually forming current sheet. It is shown that two regimes, single-island and multi-island, are possible, depending on the rate of current sheet formation. A simple model is used to compute the criterion for transition between these two regimes, as well as the reconnection onset time and the current sheet parameters at that moment. For typical solar corona parameters this model yields results consistent with observations.

Uzdensky, Dmitri A

2014-01-01T23:59:59.000Z

483

Electrolytic/fuel cell bundles and systems including a current collector in communication with an electrode thereof  

DOE Patents [OSTI]

Electrolytic/fuel cell bundles and systems including such bundles include an electrically conductive current collector in communication with an anode or a cathode of each of a plurality of cells. A cross-sectional area of the current collector may vary in a direction generally parallel to a general direction of current flow through the current collector. The current collector may include a porous monolithic structure. At least one cell of the plurality of cells may include a current collector that surrounds an outer electrode of the cell and has at least six substantially planar exterior surfaces. The planar surfaces may extend along a length of the cell, and may abut against a substantially planar surface of a current collector of an adjacent cell. Methods for generating electricity and for performing electrolysis include flowing current through a conductive current collector having a varying cross-sectional area.

Hawkes, Grant L.; Herring, James S.; Stoots, Carl M.; O'Brien, James E.

2013-03-05T23:59:59.000Z

484

Electroactive Biofilms: Current Status and Future Research Needs  

SciTech Connect (OSTI)

Electroactive biofilms generated by electrochemically active microorganisms have many potential applications in bioenergy and chemicals production. This review assesses the effects of microbiological and process parameters on enrichment of such biofilms as well as critically evaluates the current knowledge of the mechanisms of extracellular electron transfer in BES systems. First we discuss the role of biofilm forming microorganisms vs. planktonic microorganisms. Physical, chemical and electrochemical parameters which dictate the enrichment and subsequent performance of the biofilms are discussed. Potential dependent biological parameters including biofilm growth rate, specific electron transfer rate and others and their relationship to BES system performance is assessed. A review of the mechanisms of electron transfer in BES systems is included followed by a discussion of biofilm and its exopolymeric components and their electrical conductivity. A discussion of the electroactive biofilms in biocathodes is also included. Finally, we identify the research needs for further development of the electroactive biofilms to enable commercial applications.

Borole, Abhijeet P [ORNL; Reguera, Gemma [Michigan State University, East Lansing; Ringeisen, Bradley [Naval Research Laboratory, Washington, D.C.; Wang, Zhiwu [ORNL; Feng, Yujie [Harbin Institute of Technology; Kim, Byung Hong [Harbin Institute of Technology & Korea Institute of Science and Technology

2011-01-01T23:59:59.000Z

485

current energy | OpenEI Community  

Open Energy Info (EERE)

current energy current energy Home Kch's picture Submitted by Kch(24) Member 9 April, 2013 - 13:30 MHK Cost Breakdown Structure Draft CBS current energy GMREC LCOE levelized cost of energy marine energy MHK ocean energy The generalized Cost Breakdown Structure (CBS) for marine and hydrokinetic (MHK) projects is a hierarchical structure designed to facilitate the collection and organization of lifecycle costs of any type of MHK project, including wave energy converters and current energy convertners. At a high level, the categories in the CBS will be applicable to all projects; at a detailed level, however, the CBS includes many cost categories that will pertain to one project but not others. It is expected that many of the detailed levels of the CBS will be populated with "NA" or left blank.Upload

486

Definition: Electric current | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Electric current Jump to: navigation, search Dictionary.png Electric current The flow of electric charge or electrical energy (electricity); commonly measured in amperes.[1][2] View on Wikipedia Wikipedia Definition An electric current is a flow of electric charge through an electrical conductor. Electric charge flows when there is voltage present across a conductor. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in a plasma. The SI unit for measuring an electric current is the ampere, which is the flow of electric charges through a surface at the rate of one coulomb per second.

487

Certificate of Current Cost and Pricing Data  

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

CERTIFICATE OF CURRENT COST AND PRICING DATA (OCT 1997) This is to certify that, to the best of my knowledge and belief, the cost or pricing data (as defined in section 15.401 of...

488

Cathode applications to high-current diodes  

SciTech Connect (OSTI)

A principal limitation of pulse length for high electron current density diodes is the gap closure due to plasma propagation. This closure is due to plasma formed on the cathode and anode in the process of explosive field emission created by the required high field stresses of the high current diode. Experimental results of high current density T-F'' cathode and a plasma cathode will be presented. Current densities of greater than 300 A/cm2 were obtained for pulse lengths of 3 {mu}sec. Typical closure velocities were less than 2 mm/usec compared with the typical 2 cm/{mu}sec for explosive emission cathodes. 4 refs., 7 figs.

Pincosy, P.A.; Poulsen, P.; Greenwood, D.

1990-05-31T23:59:59.000Z

489

AGRICULTURE, 2003 Current Wisconsin Farm Financial Conditions  

E-Print Network [OSTI]

STATUS OF WISCONSIN AGRICULTURE, 2003 Current Wisconsin Farm Financial Conditions Situation and Challenges Department of Agricultural and Applied Economics College of Agricultural and Life Sciences OF WISCONSIN AGRICULTURE, 2003 An Annual Report by: Department of Agricultural and Applied Economics College

Radeloff, Volker C.

490

Current Source Inverters for HEVs and FCVs  

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

weight for inverters. Currently, it contributes - Cost and weight, up to 23% of an inverter - Volume, up to 30% of an inverter * Ability of film capacitors to operate at higher...

491

Alternating current electrohydrodynamic printing of microdroplets  

Science Journals Connector (OSTI)

This paper discusses the technology of orderly printing of microdroplets by means of electrohydrodynamic print (EHDP) with alternating current (AC). The AC electric field induces charges to reciprocate in the electrohydrodynamic charged jet and generates ...

Gao-Feng Zheng, Hai-Yan Liu, Rong Xu, Xiang Wang, Juan Liu, Han Wang, Dao-Heng Sun

2014-01-01T23:59:59.000Z

492

Detecting topological currents in graphene superlattices  

E-Print Network [OSTI]

Topological materials may exhibit Hall-like currents flowing transversely to the applied electric field even in the absence of a magnetic field. In graphene superlattices, which have broken inversion symmetry, topological ...

Gorbachev, R. V.

493

Dense Bottom Currents in Rotating Ocean  

Science Journals Connector (OSTI)

A dense bottom current is the flow created by a source of mass, momentum, and buoyancy flowing into an ambient fluid in such a way that the flow is bounded by the fixed wall and the interface. The dense bottom...

Flemming Bo Pedersen

1986-01-01T23:59:59.000Z

494

Non-contact current and voltage sensor  

DOE Patents [OSTI]

A detachable current and voltage sensor provides an isolated and convenient device to measure current passing through a conductor such as an AC branch circuit wire, as well as providing an indication of an electrostatic potential on the wire, which can be used to indicate the phase of the voltage on the wire, and optionally a magnitude of the voltage. The device includes a housing that contains the current and voltage sensors, which may be a ferrite cylinder with a hall effect sensor disposed in a gap along the circumference to measure current, or alternative a winding provided through the cylinder along its axis and a capacitive plate or wire disposed adjacent to, or within, the ferrite cylinder to provide the indication of the voltage.

Carpenter, Gary D; El-Essawy, Wael; Ferreira, Alexandre Peixoto; Keller, Thomas Walter; Rubio, Juan C; Schappert, Michael A

2014-03-25T23:59:59.000Z

495

Development of Superconducting AC Fault Current Limiter  

Science Journals Connector (OSTI)

The authors have developed a new superconducting fault current limiter whose impedance during normal operation is very small. During fault conditions, the limiter behaves as a superconducting reactor. The limiter

Daisuke Ito; Eriko Yoneda; Tsutomu Fujioka

1990-01-01T23:59:59.000Z

496

Test on Superconducting AC Fault Current Limiter  

Science Journals Connector (OSTI)

The authors have developed a new superconducting fault current limiter whose impedance during normal operation is very small. During fault conditions, the limiter behaves as a superconducting reactor. The limiter

Daisuke Ito; Eriko S. Yoneda

1990-01-01T23:59:59.000Z

497

Foreign Tax Credit and the Current Account  

Science Journals Connector (OSTI)

This paper provides a general equilibrium analysis of the effects of a foreign tax credit (FTC) provision on current account dynamics ... a change in the home country capital income tax rate causes different resp...

Yasushi Iwamoto; Akihisa Shibata

1999-05-01T23:59:59.000Z

498

Chemistry of nuclear fuel reprocessing: Current status  

Science Journals Connector (OSTI)

Current status on the chemical aspects of nuclear fuel reprocessing is presented with special emphasis on the Purex process which continues to be the process of choice for the last four decades. Better deconta...

D. D. Sood; S. K. Patil

1996-03-01T23:59:59.000Z

499

Transformer current sensor for superconducting magnetic coils  

DOE Patents [OSTI]

A transformer current sensor having primary turns carrying a primary current for a superconducting coil and secondary turns only partially arranged within the primary turns. The secondary turns include an active winding disposed within the primary turns and a dummy winding which is not disposed in the primary turns and so does not experience a magnetic field due to a flow of current in the primary turns. The active and dummy windings are wound in opposite directions or connected in series-bucking relationship, and are exposed to the same ambient magnetic field. Voltages which might otherwise develop in the active and dummy windings due to ambient magnetic fields thus cancel out. The resultant voltage is purely indicative of the rate of change of current flowing in the primary turns.

Shen, Stewart S. (Oak Ridge, TN); Wilson, C. Thomas (Norris, TN)

1988-01-01T23:59:59.000Z

500

Conserved currents for Mobius Domain Wall Fermions  

E-Print Network [OSTI]

We derive the exactly conserved vector, and almost conserved axial currents for rational approximations to the overlap operator with a general Mobius kernel. The approach maintains manifest Hermiticity, and allows matrix elements of the currents to be constructed at no extra cost after solution of the usual 5d system of equations, similar to the original approach of Furman and Shamir for domain wall Fermions.

P. A. Boyle

2014-11-20T23:59:59.000Z