Powered by Deep Web Technologies
Note: This page contains sample records for the topic "intensity discharge lamps" 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.


1

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

2

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

3

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

4

Contribution to the numerical study of turbulence in high intensity discharge lamps  

SciTech Connect (OSTI)

We present in this paper a comparison between results obtained with a laminar and turbulent models for high-pressure mercury arc. The two models are based on the resolution of bidimensional time-dependent equations by a semi-implicit finite-element code. The numerical computation of turbulent model is solved with large eddy simulation model; this approach takes into account the various scales of turbulence by a filtering method on each scale. The results show the quantitative influence of turbulence on the flow fields and also the difference between laminar and turbulent effects on the dynamic thermal behaviour and on the characteristics of the discharge.

Kaziz, S.; Ben Ahmed, R.; Helali, H.; Gazzah, H.; Charrada, K. [Unite d'Etude des Milieux Ionises et Reactifs, IPEIM, 5019 route de Kairouan Monastir (Tunisia)

2011-07-15T23:59:59.000Z

5

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.

6

2014-05-05 Issuance: Test Procedures for High-Intensity Discharge...  

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

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

7

High-Intensity Discharge Lighting Basics | Department of Energy  

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

High-Intensity Discharge Lighting Basics High-Intensity Discharge Lighting Basics High-Intensity Discharge Lighting Basics August 15, 2013 - 5:59pm Addthis High-intensity discharge (HID) lighting provides the highest efficacy and longest service life of any lighting type. It can save 75%-90% of lighting energy when it replaces incandescent lighting. Illustration of a high-intensity discharge (HID) lIllustration amp. The lamp is a tall cylindrical shape, and a cutout of the outer tube shows the materials inside. A long, thin cylinder called the arc tube runs through the lamp between two electrodes. The space around the arc tube is labeled as a vacuum. In a high-intensity discharge lamp, electricity arcs between two electrodes, creating an intensely bright light. Mercury, sodium, or metal halide gas

8

High intensity discharge device containing oxytrihalides  

DOE Patents [OSTI]

A fill composition for a high intensity discharge device including mercury, niobium oxytrihalide, and a molecular stabilization agent is provided. The molar ratio of niobium oxytrihalide to the molecular stabilization agent in the fill is in the range of from about 5:1 to about 7.5:1. Niobium oxytrihalide is present in the fill in sufficient amount to produce, by dissociation in the discharge, atomic niobium, niobium oxide, NbO, and niobium dioxide, NbO[sub 2], with the molar ratio of niobium-containing vapor species to mercury in the fill being in the range of from about 0.01:1 to about 0.50:1; and mercury pressure of about 1 to about 50 atmospheres at lamp operating temperature. There is also provided a high intensity discharge device comprising a sealed light-transmissive arc tube; the arc tube including the above-described fill; and an energizing means for producing an electric discharge within the arc tube. 7 figs.

Lapatovich, W.P.; Keeffe, W.M.; Liebermann, R.W.; Maya, J.

1987-06-09T23:59:59.000Z

9

High intensity discharge device containing oxytrihalides  

DOE Patents [OSTI]

A fill composition for a high intensity discharge device including mercury, niobium oxytrihalide, and a molecular stabilization agent is provided. The molar ratio of niobium oxytrihalide to the molecular stabilization agent in the fill is in the range of from about 5:1 to about 7.5:1. Niobium oxytrihalide is present in the fill in sufficient amount to produce, by dissociation in the discharge, atomic niobium, niobium oxide, NbO, and niobium dioxide, NbO.sub.2, with the molar ratio of niobium-containing vapor species to mercury in the fill being in the range of from about 0.01:1 to about 0.50:1; and mercury pressure of about 1 to about 50 atmospheres at lamp operating temperature. There is also provided a high intensity discharge device comprising a sealed light-transmissive arc tube; the arc tube including the above-described fill; and an energizing means for producing an electric discharge within the arc tube.

Lapatovich, Walter P. (Hudson, MA); Keeffe, William M. (Rockport, MA); Liebermann, Richard W. (Danvers, MA); Maya, Jakob (Brookline, MA)

1987-01-01T23:59:59.000Z

10

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

11

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

12

Max Tech and Beyond: High-Intensity Discharge Lamps  

E-Print Network [OSTI]

demonstration (like street lights) and commercialization andthe dominant light source for street and roadway lighting,has been a popular light source for street lighting because

Scholand, Michael

2012-01-01T23:59:59.000Z

13

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.

14

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

15

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

16

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

17

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

18

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

19

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.

20

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

Note: This page contains sample records for the topic "intensity discharge lamps" 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

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

22

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,

23

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 254 nm, 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 185 nm; 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 30 W m-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

24

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

25

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

26

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

27

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

28

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

29

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

30

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.

31

A Light Effect in Chlorine under Electric Discharge : Influence of the Intensity and Frequency  

Science Journals Connector (OSTI)

... as the various electrical quantities ; the electrode spacing, area and 'ageing' under the discharge ; the nature of the gas, its temperature and especially the pressure. The chief ... ; a deflexion of 54 served to indicate the current. On irradiation by the carbon arc, the current decreased by 20-21 or about 38 per cent (see table); ...

S. S. JOSHI; P. G. DEO

1943-05-15T23:59:59.000Z

32

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

33

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

34

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.

35

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.

36

Note: Characterization of the plasma parameters of a capillary discharge-produced plasma channel waveguide to guide an intense laser pulse  

SciTech Connect (OSTI)

We demonstrated the production of an optical waveguide in a capillary discharge-produced plasma using a cylindrical capillary. Plasma parameters of its waveguide were characterized by use of both a Nomarski laser interferometer and a hydrogen plasma line spectrum. A space-averaged maximum temperature of 3.3 eV with electron densities of the order of 10{sup 17} cm{sup -3} was observed at a discharge time of 150 ns and a maximum discharge current of 400 A. An ultrashort, intense laser pulse was guided by use of this plasma channel.

Higashiguchi, Takeshi; Yugami, Noboru [Department of Advanced Interdisciplinary Sciences and Center for Optical Research and Education (CORE), Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan); CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kanagawa, Saitama 332-0012 (Japan); Hikida, Masafumi; Terauchi, Hiromitsu; Bai Jinxiang [Department of Advanced Interdisciplinary Sciences and Center for Optical Research and Education (CORE), Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan); Kikuchi, Takashi [Department of Electrical Engineering, Nagaoka University of Technology, Kami-tomiokamachi 1603-1, Nagaoka, Niigata 940-2188 (Japan); Tao Yezheng [Center for Energy Research, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0438 (United States)

2010-04-15T23:59:59.000Z

37

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.

38

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

39

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

40

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...

Note: This page contains sample records for the topic "intensity discharge lamps" 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

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

42

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

43

,,,"Incandescent","Standard Fluorescent","Compact Fluorescent","High-Intensity Discharge","Halogen"  

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

B39. Lighting Equipment, Floorspace, 1999" B39. Lighting Equipment, Floorspace, 1999" ,"Total Floorspace (million square feet)" ,"All Buildings","All Lit Buildings","Lighting Equipment (more than one may apply)" ,,,"Incandescent","Standard Fluorescent","Compact Fluorescent","High-Intensity Discharge","Halogen" "All Buildings ................",67338,64321,38156,60344,20666,19223,17926 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",6774,5859,2946,5154,738,245,600 "5,001 to 10,000 ..............",8238,7464,4047,6722,1108,663,991 "10,001 to 25,000 .............",11153,10393,6055,9815,1759,1701,1996 "25,001 to 50,000 .............",9311,9053,5004,8344,2296,2224,1611

44

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).

45

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

46

Microdischarge-assisted ignition of dielectric-barrier high-pressure glow discharges  

E-Print Network [OSTI]

in the ignition of high-pressure arc lamps8 and volume dc discharges.6 Here, we employ a hybrid discharge source of uniform, nonequilibrium glow plasmas for a variety of applications at pressures of 100

Raja, Laxminarayan L.

47

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

48

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

49

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.

50

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

51

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...

52

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 1971–1973; 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

53

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...

54

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

55

Powerful glow discharge excilamp  

DOE Patents [OSTI]

A powerful glow discharge lamp comprising two coaxial tubes, the outer tube being optically transparent, with a cathode and anode placed at opposite ends of the tubes, the space between the tubes being filled with working gas. The electrodes are made as cylindrical tumblers placed in line to one other in such a way that one end of the cathode is inserted into the inner tube, one end of the anode coaxially covers the end of the outer tube, the inner tube penetrating and extending through the anode. The increased electrodes' surface area increases glow discharge electron current and, correspondingly, average radiation power of discharge plasma. The inner tube contains at least one cooling liquid tube placed along the axis of the inner tube along the entire lamp length to provide cathode cooling. The anode has a circumferential heat extracting radiator which removes heat from the anode. The invention is related to lighting engineering and can be applied for realization of photostimulated processes under the action of powerful radiation in required spectral range.

Tarasenko, Victor F. (Tomsk, RU); Panchenko, Aleksey N. (Tomsk, RU); Skakun, Victor S. (Tomsk, RU); Sosnin, Edward A. (Tomsk, RU); Wang, Francis T. (Danville, CA); Myers, Booth R. (Livermore, CA); Adamson, Martyn G. (Danville, CA)

2002-01-01T23:59:59.000Z

56

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 ~ 100–150 J. 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 250 J. 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

57

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...

58

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.

59

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

60

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.

Note: This page contains sample records for the topic "intensity discharge lamps" 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

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

62

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

63

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

64

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

65

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

66

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....

67

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 manufacturer’s 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

68

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

69

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 behavior—the same dimming curve—when 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 better—or more similar to conventional lamps—than 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

70

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

71

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

72

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

73

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.

74

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...

75

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:

76

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

77

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

78

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

79

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

80

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

Note: This page contains sample records for the topic "intensity discharge lamps" 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

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

82

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

83

Federal Register Vol. 76 No. 44, 12422-12505 - Energy Conservation...  

Energy Savers [EERE]

for High-Intensity Discharge Lamps; Supplemental Notice of Proposed Rulemaking 2014-05-16 Issuance: Test Procedures for Integrated Light-Emitting Diode Lamps; Supplemental...

84

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

85

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

86

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.

87

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.

88

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

89

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

90

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...

91

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

92

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

93

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...

94

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

95

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

96

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

97

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.

98

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

99

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

100

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.

Note: This page contains sample records for the topic "intensity discharge lamps" 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

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

102

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

103

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

104

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...

105

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.

106

Data Intensive  

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

Data Intensive Data Intensive Computing Pilot Program In 2014 NERSC is conducting its second and last round of allocations to projects in data intensive science. This pilot aims to...

107

Discharge ignition characteristics of pulsed radio-frequency glow discharges in atmospheric helium  

Science Journals Connector (OSTI)

An experimental study of radio-frequency (15 MHz) glow discharges in atmospheric helium modulated by pulses with repetition frequency of 500 kHz and duty cycle of 6% and 8% is presented in this paper. In each discharge burst the discharge is restricted to operate in ignition phase with duration of one or two radio-frequency cycles. The ignition characteristics in terms of spatial-temporal evolution of discharge interelectrode structure and optical emission intensity are investigated by time resolved imaging. Optical emission intensities at lines of 706 and 777 nm are used to capture clearly the temporal evolution of energetic electrons and active specie of atom oxygen generated in discharge.

Jianjun Shi; Yeqing Cai; Jie Zhang; Ke Ding; Jing Zhang

2009-01-01T23:59:59.000Z

108

Discharge ignition characteristics of pulsed radio-frequency glow discharges in atmospheric helium  

SciTech Connect (OSTI)

An experimental study of radio-frequency (15 MHz) glow discharges in atmospheric helium modulated by pulses with repetition frequency of 500 kHz and duty cycle of 6% and 8% is presented in this paper. In each discharge burst, the discharge is restricted to operate in ignition phase with duration of one or two radio-frequency cycles. The ignition characteristics in terms of spatial-temporal evolution of discharge interelectrode structure and optical emission intensity are investigated by time resolved imaging. Optical emission intensities at lines of 706 and 777 nm are used to capture clearly the temporal evolution of energetic electrons and active specie of atom oxygen generated in discharge.

Shi Jianjun; Cai Yeqing; Zhang Jie; Ding Ke; Zhang Jing [State Key Lab for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, and College of Science, Donghua University, Shanghai 201620 (China)

2009-07-15T23:59:59.000Z

109

Oscillations in glow discharges  

E-Print Network [OSTI]

OSCILLATIONS IN GLOW DISCHARGES A Dissertation By Tom Prickett, Jr. June 1950 Approved as to style and content by Chairman of Committee OSCILLATIONS IN GLOW DISCHARGES A Dissertation By Tom Prickett, Jr* June 1950 OSCILLATIONS IN GLOW... 1950 CONTENTS Introduction ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 I. Review of Plasma Oscillations in Gas Discharges ? . . 2 II. Review of Relaxation Processes in Gas Discharges ? . 13 III. Report of Laboratory Investigation...

Prickett, Tom

1950-01-01T23:59:59.000Z

110

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)

111

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

112

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.

113

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.‖

114

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

115

Direct Discharge Permit (Vermont)  

Broader source: Energy.gov [DOE]

A direct discharge permit is required if a project involves the discharge of pollutants to state waters. For generation purposes, this involves the withdrawal of surface water for cooling purposes...

116

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

117

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 44°C and 45°C.

Royer, Michael P.

2014-12-01T23:59:59.000Z

118

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.

119

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.

120

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...

Note: This page contains sample records for the topic "intensity discharge lamps" 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

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

122

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

123

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.

124

Nonsputtering impulse magnetron discharge  

SciTech Connect (OSTI)

Experiments with quasi-steady high-current discharges in crossed E Multiplication-Sign B fields in various gases (Ar, N{sub 2}, H{sub 2}, and SF{sub 6}) and gas mixtures (Ar/SF{sub 6} and Ar/O{sub 2}) at pressures from 10{sup -3} to 5 Torr in discharge systems with different configurations of electric and magnetic fields revealed a specific type of stable low-voltage discharge that does not transform into an arc. This type of discharge came to be known as a high-current diffuse discharge and, later, a nonsputtering impulse magnetron discharge. This paper presents results from experimental studies of the plasma parameters (the electron temperature, the plasma density, and the temperature of ions and atoms of the plasma-forming gas) of a high-current low-pressure diffuse discharge in crossed E Multiplication-Sign B fields.

Khodachenko, G. V.; Mozgrin, D. V.; Fetisov, I. K.; Stepanova, T. V. [National Research Nuclear University Moscow Engineering Physics Institute (Russian Federation)

2012-01-15T23:59:59.000Z

125

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

126

Intense pulsed light sintering of copper nanoink for printed electronics  

E-Print Network [OSTI]

During the arc plasma generation, the ?ash lamp emits anusing an arc plasma phenomenon in the xenon ?ash lamp [7].

Kim, Hak-Sung; Dhage, Sanjay R.; Shim, Dong-Eun; Hahn, H. Thomas

2009-01-01T23:59:59.000Z

127

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

128

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

129

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

130

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

131

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

132

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

133

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

134

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

135

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

136

Silane discharge ion chemistry  

SciTech Connect (OSTI)

Silane dc, rf, and dc proximity discharges have been studied using mass spectroscopic measurements of the positive ions as a detailed diagnostic for the type of discharge used to produce hydrogenated amorphous silicon solar photovoltaic cells. The properties and quality of these films depends in a very complex way upon the interactions of the many reactive neutral and ion species in the discharge. Qualitative models of the ion chemical processes in these discharges have been developed from experimental measurements. Knowledge of the ion-molecule and electron-molecule collision cross sections is important to any attempt at understanding silane discharge chemistry. Consequently, the electron impact ionization cross sections for silane and disilane have been measured and for comparison purposes also for methane and ethane. In addition, the rate coefficients for charge exchange reactions of He , Ne , and Ar with silane, disilane, methane, and ethane have been measured as these are important to understanding discharges in inert gas-silane mixtures. A detailed quantitative model of the cathode sheath region of a silane dc discharge has been developed by extending the best recent calculation of the electron motion in the sheath to a self-consistent form which includes the ion motion. This model is used with comparison of silane dc discharge data to diagnose the ion chemistry occurring in the sheath region of silane dc discharge. The understanding of the discharge ion chemical processes that have been gained in this study represent an important step toward understanding the chemical and physical processes leading to film growth.

Chatham, R.H. III

1984-01-01T23:59:59.000Z

137

The impact of modern headlamps on the design of sag vertical curves  

E-Print Network [OSTI]

to the lens. The housing serves as a reflector and lens, and is made of plastic. These lamps may be comprised of different light emitting diode?s (LEDs), high intensity discharge (HID) lamps, and halogen lamps. Halogen headlamps are further comprised... on. HID lamps produce more light compared to halogen lamps (22). Also, HID lamps have a sharper horizontal cut-off beam pattern further reducing the portion of lighted highway on sag curves (25). Light emitting diode is another headlamp...

Gogula, Madhuri

2006-08-16T23:59:59.000Z

138

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

139

Glow discharge detector  

DOE Patents [OSTI]

A highly sensitive electronic ion cell for the measurement of trace elements in He carrier gas which involves glow discharge. A constant wave (CW) glow discharge detector which is controlled through a biased resistor, can detect the change of electron density caused by impurities in the He carrier gas by many orders of magnitude larger than that caused by direct ionization or electron capture. The glow discharge detector utilizes a floating pseudo-electrode to form a probe in or near the plasma. By using this probe, the large variation of electron density due to trace amounts of impurities can be directly measured.

Koo, Jackson C. (San Ramon, CA); Yu, Conrad M. (Antioch, CA)

2002-01-01T23:59:59.000Z

140

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 p–n 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 p–n 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 p–n junctionLED. In practice the LED takes the form of a p–n heterostructure in order to improve electron–hole injection reduce the absorption of recombination radiation and to make possible—with proper geometries—improved photon escape.

N. Holonyak Jr.

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "intensity discharge lamps" 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

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

142

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.

143

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...

144

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

145

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.

146

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...

147

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

148

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

149

DOE Technical Assistance Program  

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

Steward, LC Pacific Northwest National Laboratory Research Engineer 8 | TAP Webinar eere.energy.gov * High-Intensity Discharge Lamps - Dominant source in outdoor lighting -...

150

Stabilization of liquid hydrocarbon fuel combustion by using a programmable microwave discharge in a subsonic airflow  

SciTech Connect (OSTI)

Under conditions of a programmable discharge (a surface microwave discharge combined with a dc discharge), plasma-enhanced combustion of alcohol injected into a subsonic (M = 0.3-0.9) airflow in the drop (spray) phase is stabilized. It is shown that the appearance of the discharge, its current-voltage characteristic, the emission spectrum, the total emission intensity, the heat flux, the electron density, the hydroxyl emission intensity, and the time dependences of the discharge current and especially discharge voltage change substantially during the transition from the airflow discharge to stabilized combustion of the liquid hydrocarbon fuel. After combustion stabilization, more than 80% of liquid alcohol can burn out, depending on the input power, and the flame temperature reaches {approx}2000 K.

Kopyl, P. V.; Surkont, O. S.; Shibkov, V. M.; Shibkova, L. V. [Moscow State University, Faculty of Physics (Russian Federation)

2012-06-15T23:59:59.000Z

151

(Gas discharges and applications)  

SciTech Connect (OSTI)

The traveler attended the Ninth International Conference on Gas Discharges and Their Applications, which was held in Venice, Italy, on September 19--23, 1988; presented two papers, (1) Ion Chemistry in SF{sub 6} Corona'' and (2) Production of S{sub 2}F{sub 10} by SF{sub 6} Spark Discharge''; and participated in numerous discussions with conference participants on gas discharges related to his work on SF{sub 6}. The traveler visited the Centre de Physique Atomique at the University Paul Sabatier in Toulouse, France, to discuss with Dr. J. Casanovas his work on SF{sub 6} decomposition. Following that visit, the traveler visited the Laboratoire de Photoelectricite at the University of Dijon to discuss with Dr. J.-P. Goudonnet his work on surface studies and on the use of tunneling electron spectroscopy for the chemical analysis of surfaces.

Sauers, I.

1988-10-04T23:59:59.000Z

152

PERIODIC GLOW DISCHARGE REPORT  

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

GLOW DISCHARGE REPORT GLOW DISCHARGE REPORT TIME: Jan 11 2014 11:29:09:000PM Power Supply ON/OFF Status OFF Power Supply Fault Status FAULT Power Supply Standby Status ON Power Supply Interlock Status NOT OK HV Power Resistors Status NORMAL Power Supply Voltage 52.00 Power Supply Current -71.00 Electrode 1 Voltage -15.00 Electrode 1 Current -79.00 Electrode 2 Voltage -14.00 Electrode 2 Current -70.00 ROSS 1 Status OPEN ROSS 2 Status OPEN ROSS 1 Common Line OPEN ROSS 2 Common Line OPEN IGBT1 Enable DISABLE IGBT2 Enable DISABLE

153

2011 Intensity -1 INTENSITY OF SOUND  

E-Print Network [OSTI]

the rate at which energy is passing a certain point. This concept involves sound intensity. Consider the sound intensity. Recall the time rate of energy transfer is called "power". Thus, sound intensity2011 Intensity - 1 INTENSITY OF SOUND The objectives of this experiment are: · To understand

Glashausser, Charles

154

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

155

Solid-state lighting : lamp targets and implications for the semiconductor chip.  

SciTech Connect (OSTI)

A quiet revolution is underway. Over the next 5-10 years inorganic-semiconductor-based solid-state lighting technology is expected to outperform first incandescent, and then fluorescent and high-intensity-discharge, lighting. Along the way, many decision points and technical challenges will be faced. To help understand these challenges, the U.S. Department of Energy, the Optoelectronics Industry Development Association and the National Electrical Manufacturers Association recently updated the U.S. Solid-State Lighting Roadmap. In the first half of this paper, we present an overview of the high-level targets of the inorganic-semiconductor part of that update. In the second half of this paper, we discuss some implications of those high-level targets on the GaN-based semiconductor chips that will be the 'engine' for solid-state lighting.

Tsao, Jeffrey Yeenien

2003-08-01T23:59:59.000Z

156

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

157

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.

158

Appliances and Commercial Equipment Standards  

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

High Intensity Discharge Lamps Test Procedures High Intensity Discharge Lamps Test Procedures Sign up for e-mail updates on regulations for this and other products High-intensity discharge (HID) lamps include mercury vapor (MV), metal halide (MH), and high-pressure sodium (HPS) lamps. The Department of Energy (DOE) is establishing test procedures for HID lamps. This rulemaking is mandated by the Energy Policy and Conservation Act (EPCA). ( 42 U.S.C. 6291-6309) This Rulemaking is related to the High-Intensity Discharge Lamps Standard and Test Procedure. Recent Updates | Public Meeting Information | Submitting Public Comments | Milestones and Documents | Related Rulemakings | Statutory Authority | Contact Information Recent Updates DOE published a notice of proposed rulemaking regarding test procedures for HID lamps. 76 FR 77914 (Dec. 15, 2011).

159

Water Pollutant Discharge Act (Illinois)  

Broader source: Energy.gov [DOE]

The discharge of oil in quantities which exceed the standards adopted by the Pollution Control Board, or the discharge of other pollutants directly or indirectly into the waters is prohibited....

160

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 "intensity discharge lamps" 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

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

162

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

163

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

164

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.

165

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)

166

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

167

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

168

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

169

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

170

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

171

Large discharge-volume, silent discharge spark plug  

DOE Patents [OSTI]

A large discharge-volume spark plug for providing self-limiting microdischarges. The apparatus includes a generally spark plug-shaped arrangement of a pair of electrodes, where either of the two coaxial electrodes is substantially shielded by a dielectric barrier from a direct discharge from the other electrode, the unshielded electrode and the dielectric barrier forming an annular volume in which self-terminating microdischarges occur when alternating high voltage is applied to the center electrode. The large area over which the discharges occur, and the large number of possible discharges within the period of an engine cycle, make the present silent discharge plasma spark plug suitable for use as an ignition source for engines. In the situation, where a single discharge is effective in causing ignition of the combustible gases, a conventional single-polarity, single-pulse, spark plug voltage supply may be used.

Kang, Michael (Los Alamos, NM)

1995-01-01T23:59:59.000Z

172

‘Communication’ in weakly electric fish, Gnathonemus niger (Mormyridae) I. Variation of electric organ discharge (EOD) frequency elicited by controlled electric stimuli  

Science Journals Connector (OSTI)

The weakly electric fish, Gathonemus niger, discharged with a frequency of 4 to 8 Hz during the day and 10 to 16 Hz during the night. The frequency of superimposed burst discharges (32 to 56 Hz) was independent of diurnal factors. The variation of the electric organ discharge frequency during the day was investigated in response to controlled electric stimulus patterns: (a) A free running stimulus frequency of 4 Hz, simulating the resting frequency of another fish, and different stimulus intensities, simulating different distances between two fish. (b) Free running frequencies of 4, 8, 16, …, 128 Hz and two particular stimulus intensities. (c) Discharge coupled stimuli (each discharge triggered an electric stimulus with a fixed delay) and different stimulus intensities. All three kinds of stimuli elicited defined and predictable response discharge patterns supporting the assumption that an electric fish would respond to a particular discharge pattern of another fish also in a similar and predictable manner. Low stimulus intensities (0·04 to 0·2 mV per cm) caused cessation of the discharge activity, a ‘hiding’ or ‘listening’ response. The discharge rate increased linearly with the logarithm of the stimulus intensity. The fish was particularly sensitive to stimulus frequencies which simulated its burst activity (32 to 56 Hz). Discharge coupled stimuli showed that the fish responded to about eight times lower stimulus intensities if the stimulus occurred between two discharges (15 to 30 m-s after the fish's discharge) than if the stimulus occurred within or immediately after the discharge. All suprathreshold stimuli elicited a typical discharge pattern: The irregular resting discharge activity became significantly regular. The degree of regularity was even improved during maintained stimulation. The regularisation of the discharge activity is thought to be involved in the fish's electrolocating system whereas frequency variations are considered as being involved in both the locating system and as communication signals among weakly electric fish.

Peter Moller

1970-01-01T23:59:59.000Z

173

Submicrosecond pulsed atmospheric glow discharges sustained without dielectric barriers at kilohertz frequencies  

SciTech Connect (OSTI)

In this letter, the authors report the experimental observation of a large-volume atmospheric glow discharge sustained without dielectric barriers at 1 kHz. This barrier-free mode of operation is made possible with a submicrosecond pulsed excitation instead of the usual sinusoidal excitation. Its current-voltage characteristics are shown to be very different from conventional atmospheric dielectric barrier discharges, and its generation mechanism is studied with nanosecond resolved optical emission spectroscopy. The pulsed barrier-free atmospheric plasma is shown to produce very intense atomic oxygen emission line at 777 nm, up to one magnitude more intensive than that of a comparable atmospheric dielectric barrier discharge.

Walsh, J. L.; Shi, J. J.; Kong, M. G. [Department of Electronic and Electrical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU (United Kingdom)

2006-10-16T23:59:59.000Z

174

Appliances and Commercial Equipment Standards  

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

High-Intensity Discharge Lamps Energy Conservation Standard High-Intensity Discharge Lamps Energy Conservation Standard Sign up for e-mail updates on regulations for this and other products High-intensity discharge (HID) lamps include mercury vapor (MV), metal halide (MH), and high-pressure sodium (HPS) lamps. The Department of Energy (DOE) is considering establishing energy conservation standards for certain HID lamps. This rulemaking is mandated by the Energy Policy and Conservation Act (EPCA). (42 USC 6311-6317) Recent Updates | Public Meeting Information | Submitting Public Comments | Milestones and Documents | Related Rulemakings | Statutory Authority | Contact Information Recent Updates DOE published a notice of public meeting and availability of interim technical support document regarding energy conservation standards for high-intensity discharge lamps. 78 FR 13566 (February 28, 2013).

175

Vibration intensity difference thresholds.  

E-Print Network [OSTI]

??The intensity difference threshold is defined as ‘the difference in the intensity of two stimuli which is just sufficient for their difference to be detected’.… (more)

Forta, Nazim Gizem

2009-01-01T23:59:59.000Z

176

Observation and numerical analysis of plasma parameters in a capillary discharge-produced plasma channel waveguide  

SciTech Connect (OSTI)

We observed the parameters of the discharge-produced plasma in cylindrical capillary. Plasma parameters of the waveguide were investigated by use of both a Normarski laser interferometer and a hydrogen plasma line spectrum. A space-averaged maximum temperature of 3.3 eV with electron densities of the order of 10{sup 17} cm{sup -3} was observed at a discharge time of 150 ns and a maximum discharge current of 200 A. One-dimensional dissipative magnetohydrodynamic (MHD) code was used to analyze the discharge dynamics in the gas-filled capillary discharge waveguide for high-intensity laser pulses. Simulations were performed for the conditions of the experiment. We compared the temporal behavior of the electron temperature and the radial electron density profiles, measured in the experiment with the results of the numerical simulations. They occurred to be in a good agreement. An ultrashort, intense laser pulse was guided by use of this plasma channel.

Terauchi, Hiromitsu [Department of Advanced Interdisciplinary Sciences, and Center for Optical Research and Education (CORE) Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan); Bobrova, Nadezhda; Sasorov, Pavel [Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya str. 25, 117259 Moscow (Russian Federation); Kikuchi, Takashi; Sasaki, Toru [Department of Electrical Engineering, Nagaoka University of Technology, Kami-tomiokamachi 1603-1, Nagaoka, Niigata 940-2188 Japan (Japan); Higashiguchi, Takeshi; Yugami, Noboru [Department of Advanced Interdisciplinary Sciences, and Center for Optical Research and Education (CORE) Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan); Japan Science and Technology Agency, CREST, 4-1-8 Honcho, Kanagawa, Saitama 332-0012 (Japan); Kodama, Ryosuke [Japan Science and Technology Agency, CREST, 4-1-8 Honcho, Kanagawa, Saitama 332-0012 (Japan); Graduate School of Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871 (Japan)

2011-03-01T23:59:59.000Z

177

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

178

Microsoft Word - Groundwater Discharge Permit  

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

State Renews Groundwater Discharge Permit for WIPP CARLSBAD, N.M., September 11, 2008 - The New Mexico Environment Department (NMED) has renewed the U.S. Department of Energy's (DOE) Waste Isolation Pilot Plant (WIPP) groundwater discharge permit until 2013. The permit regulates the discharge of water from WIPP facilities and operations to lined ponds, which protect groundwater resources. The permit allows WIPP to discharge domestic wastewater, non-hazardous wastewater and storm water into 13 on-site, synthetically-lined ponds. The new permit also provides for increased daily discharge volumes to allow more flexibility in plant operations. "This permit is the result of a positive year-long effort with the New Mexico Groundwater Quality Bureau," said Jody Plum, DOE Carlsbad Field Office Permitting and

179

Differential pressure pin discharge apparatus  

DOE Patents [OSTI]

Disclosed is a discharge assembly for allowing elongate pins to be discharged from an area of relatively low pressure to an area of relatively greater pressure. The discharge assembly includes a duck valve having a lip piece made of flexible material. The flexible lip piece responds to a fluctuating pressure created downstream by an aspirator. The aspirator reduces the downstream pressure sensed by the duck valve when the discharge assembly is in the open position. This allows elongate pins to be moved through the duck valve with no backflow because the aspirator pressure is less than the pressure in the low pressure area from which the pins originate. Closure of the assembly causes the aspirator static pressure to force the flexible duck valve lip piece into a tightly sealed position also preventing backflow. The discharge assembly can be easily controlled using a single control valve which blocks the flow of aspirator gas and closes the pin passageway extending through the assembly.

Oakley, David J. (Richland, WA)

1987-01-01T23:59:59.000Z

180

Office of Environmental Health and Safety The University of Texas at Austin  

E-Print Network [OSTI]

202 Austin, Texas 78712 (512) 471-3511; Fax: (512) 471-6918 INFO SHEET Fluorescent Light Bulb Disposal such as small lamps, mercury vapor lamps, and other odd shaped fluorescent tubes. In the case of smaller bulbs Used Fluorescent, high intensity discharge (HID), and UV germicidal lamps are considered a hazardous

Note: This page contains sample records for the topic "intensity discharge lamps" 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

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

182

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.

183

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

184

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

185

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

186

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

187

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

188

EPA - National Pollutant Discharge Elimination System General...  

Open Energy Info (EERE)

search OpenEI Reference LibraryAdd to library PermittingRegulatory Guidance - GuideHandbook: EPA - National Pollutant Discharge Elimination System General Permit for Discharges...

189

Industrial Discharge Permits (District of Columbia)  

Broader source: Energy.gov [DOE]

All businesses and government agencies discharging process wastewater to the public sewer system must report their activities to DC Water's Pretreatment Center. Wastewater discharge permits are...

190

Groundwater Discharge Permit and Registration (New Hampshire)  

Broader source: Energy.gov [DOE]

The Groundwater Discharge Permitting and Registration Program seeks to protect groundwater quality by establishing standards, criteria, and procedures for wastewater discharges. The program...

191

Hall current layer formation in arc discharge across magnetic field and transfer of fast ions out of discharge  

SciTech Connect (OSTI)

In the work presented here the geometry of the Hall current layer in a plasma of the vacuum arc discharge in the transverse magnetic field are analyzed. The extraction of an intense pure flux of fast ions generated in the cathode spots with the help of the Hall layer is discussed. Experiments on the arc source of carbon fast ions are described. The anode geometry adequate to the mechanism of the arc current passage through the transverse magnetic field is found out experimentally. Up to 70% of fast ions are extracted out of the arc discharge in the arched magnetic field. In experiments, the Hall current layer formation in the vacuum arc discharge across magnetic field is confidently confirmed.

Bender, E.D.; Dimov, G.I.; Krivenko, A.S.; Razorenov, V.V. [Lumiks PTI Ltd., Yarne 81223 (Israel); Budker Institute of Nuclear Physics, Novosibirsk 630090 (Russian Federation)

2006-01-15T23:59:59.000Z

192

Steam in the Ring Discharge  

Science Journals Connector (OSTI)

The behaviour of steam and its decomposition products in the ring discharge has been examined. Dry hydrogen is not dissociated. The production of atomic hydrogen is dependent upon the presence of steam which dissociates into hydroxyl and atomic hydrogen. A secondary source of atomic hydrogen is then afforded by the interaction of hydroxyl with molecular hydrogen. The escape from the discharge of atomic hydrogen, a long-lived species, favours the dissociation of steam. Mercury vapour, on the other hand, inhibits the formation of atomic hydrogen and thus leads to a high equilibrium steam concentration. Unlike dry hydrogen, dry oxygen is dissociated into atoms, but these have a short life as such and recombine in the discharge to form molecular oxygen and ozone. The reaction mechanisms occurring in the discharge are discussed in the light of spectrographic results.

G I Finch

1949-01-01T23:59:59.000Z

193

High-frequency discharges III  

Science Journals Connector (OSTI)

We start with a comparison of advantages and disadvantages of capacitively coupled discharges, by which it becomes obvious why and how the semiconductor industry has triggered the demand for high-density plasm...

Prof.Dr. Gerhard Franz

2009-01-01T23:59:59.000Z

194

Discharge cell for ozone generator  

DOE Patents [OSTI]

A discharge cell for use in an ozone generator is provided which can suppress a time-related reduction in ozone concentration without adding a catalytic gas such as nitrogen gas to oxygen gas as a raw material gas. The discharge cell includes a pair of electrodes disposed in an opposed spaced relation with a discharge space therebetween, and a dielectric layer of a three-layer structure consisting of three ceramic dielectric layers successively stacked on at least one of the electrodes, wherein a first dielectric layer of the dielectric layer contacting the one electrode contains no titanium dioxide, wherein a second dielectric layer of the dielectric layer exposed to the discharge space contains titanium dioxide in a metal element ratio of not lower than 10 wt %.

Nakatsuka, Suguru (Amagasaki, JP)

2000-01-01T23:59:59.000Z

195

Discharge produces hydrocarbons from coal  

Science Journals Connector (OSTI)

Discharge produces hydrocarbons from coal ... Studies of the reactions of coal in electric discharges by two chemists at the U.S. Bureau of Mines' Pittsburgh Coal Research Center may lead to improved ways of producing acetylene and other useful chemicals from coal. ... Other workers have produced high yields of acetylene from coal by extremely rapid pyrolysis using energy sources such as plasma jets, laser beams, arc-image reactors, and flash heaters. ...

1968-01-22T23:59:59.000Z

196

Water purification by electrical discharges  

Science Journals Connector (OSTI)

There is a continuing need for the development of effective, cheap and environmentally friendly processes for the disinfection and degradation of organic pollutants from water. Ozonation processes are now replacing conventional chlorination processes because ozone is a stronger oxidizing agent and a more effective disinfectant without any side effects. However, the fact that the cost of ozonation processes is higher than chlorination processes is their main disadvantage. In this paper recent developments targeted to make ozonation processes cheaper by improving the efficiency of ozone generation, for example, by incorporation of catalytic packing in the ozone generator, better dispersion of ozone in water and faster conversion of dissolved ozone to free radicals are described. The synthesis of ozone in electrical discharges is discussed. Furthermore, the generation and plasma chemical reactions of several chemically active species, such as H2O2, O•, OH•, HO2•, O3*, N2*, e-, O2-, O-, O2+, etc, which are produced in the electrical discharges are described. Most of these species are stronger oxidizers than ozone. Therefore, water treatment by direct electrical discharges may provide a means to utilize these species in addition to ozone. Much research and development activity has been devoted to achieve these targets in the recent past. An overview of these techniques and important developments that have taken place in this area are discussed. In particular, pulsed corona discharge, dielectric barrier discharge and contact glow discharge electrolysis techniques are being studied for the purpose of cleaning water. The units based on electrical discharges in water or close to the water level are being tested at industrial-scale water treatment plants.}

Muhammad Arif Malik; Abdul Ghaffar; Salman Akbar Malik

2001-01-01T23:59:59.000Z

197

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

198

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.

199

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

200

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 "intensity discharge lamps" 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

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.

202

Iodine monofluoride discharge laser investigation  

SciTech Connect (OSTI)

The results of an experimental investigation to improve the performance of a discharge-pumped iodine monofluoride laser are reported. Lasing was observed at 478.7, 484.7, 490.7, and 496.5 nm. Electrical measurements of the discharge characteristics permitted the energy flow in the circuit to be followed and laser efficiencies to be calculated. Parametric studies of gas mixtures were carried out. By optimizing several parameters, single-pulse lasing energies greater than 50 mJ were obtained.

Harris, D.G.; Blauer, J.A.; Hurlock, S.C. (Rockwell International, Rocketdyne Division, Canoga Park, CA (USA))

1990-10-15T23:59:59.000Z

203

Compact monolithic capacitive discharge unit  

DOE Patents [OSTI]

A compact monolithic capacitive discharge unit (CDU) is disclosed in which a thyristor switch and a flyback charging circuit are both sandwiched about a ceramic energy storage capacitor. The result is a compact rugged assembly which provides a low-inductance current discharge path. The flyback charging circuit preferably includes a low-temperature co-fired ceramic transformer. The CDU can further include one or more ceramic substrates for enclosing the thyristor switch and for holding various passive components used in the flyback charging circuit. A load such as a detonator can also be attached directly to the CDU.

Roesler, Alexander W. (Tijeras, NM); Vernon, George E. (Rio Rancho, NM); Hoke, Darren A. (Albuquerque, NM); De Marquis, Virginia K. (Tijeras, NM); Harris, Steven M. (Albuquerque, NM)

2007-06-26T23:59:59.000Z

204

State Waste Discharge Permit application, 183-N Backwash Discharge Pond  

SciTech Connect (OSTI)

As part of the Hanford Federal Facility Agreement and Consent Order negotiations (Ecology et al. 1994), the US Department of Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect groundwater would be subject to permitting under the structure of Chapter 173--216 (or 173--218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. As a result of this decision, the Washington State Department of Ecology and the US Department of Energy, Richland Operations Office entered into Consent Order No. DE91NM-177, (Ecology and DOE-RL 1991). The Consent Order No. DE91NM-177 requires a series of permitting activities for liquid effluent discharges. Liquid effluents on the Hanford Site have been classified as Phase I, Phase II, and Miscellaneous Streams. The Consent Order No. DE91NM-177 establishes milestones for State Waste Discharge Permit application submittals for all Phase I and Phase II streams, as well as the following 11 Miscellaneous Streams as identified in Table 4 of the Consent Order No. DE91NM-177.

Not Available

1994-06-01T23:59:59.000Z

205

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

206

Intense steady state electron beam generator  

DOE Patents [OSTI]

An intense, steady state, low emittance electron beam generator is formed by operating a hollow cathode discharge plasma source at critical levels in combination with an extraction electrode and a target electrode that are operable to extract a beam of fast primary electrons from the plasma source through a negatively biased grid that is critically operated to repel bulk electrons toward the plasma source while allowing the fast primary electrons to move toward the target in the desired beam that can be successfully transported for relatively large distances, such as one or more meters away from the plasma source.

Hershcovitch, Ady (Mount Sinai, NY); Kovarik, Vincent J. (Bohemia, NY); Prelec, Krsto (Setauket, NY)

1990-01-01T23:59:59.000Z

207

Light intensity compressor  

DOE Patents [OSTI]

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

Rushford, Michael C. (Livermore, CA)

1990-01-01T23:59:59.000Z

208

Excimer emission from pulsed microhollow cathode discharges in xenon  

SciTech Connect (OSTI)

Direct current (dc) microhollow cathode discharge (MHCD) is an intense source for excimer radiation in vacuum ultraviolet at a wavelength of 172 nm in a high pressure xenon (Xe) gas. The concentration of precursors for the excimer formation, i.e., excited and ionized gas atoms, increases significantly by applying high voltage pulse onto the dc MHCD over the pulse duration range from 20 to 100 ns. The intensity of the excimer emission for the voltage pulse of 20 ns duration exceeds that of the emission intensity obtained from the same MHCD operated only in the dc mode, by one order of magnitude. In addition, the emission intensity increases by one order of magnitude over the pulse duration range from 20 to 100 ns. It can be assumed that the emission intensity of the MHCD source increases as long as the duration of the high voltage pulse is shorter than the electron relaxation time. For the high voltage pulse of 100 ns duration, the emission intensity has been found to be further enhanced by a factor of three when the gas pressure is increased from 200 to 800 mbar.

Lee, B.-J.; Nam, S. H. [Pohang Accelerator Laboratory, Pohang, Kyungbuk 790-784 (Korea, Republic of)] [Pohang Accelerator Laboratory, Pohang, Kyungbuk 790-784 (Korea, Republic of); Rahaman, H. [CSIR–CEERI Pilani, Rajasthan 333031 (India)] [CSIR–CEERI Pilani, Rajasthan 333031 (India); Iberler, M.; Jacoby, J. [Institute of Applied Physics, Goethe University, Max-von-Laue-Str. 1, 60438 Frankfurt am Main (Germany)] [Institute of Applied Physics, Goethe University, Max-von-Laue-Str. 1, 60438 Frankfurt am Main (Germany); Frank, K. [Physics Department 1, University of Erlangen – Nuremberg, 91058 Erlangen (Germany)] [Physics Department 1, University of Erlangen – Nuremberg, 91058 Erlangen (Germany)

2013-12-15T23:59:59.000Z

209

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

210

State Surface Water Discharge Permits (New Hampshire)  

Broader source: Energy.gov [DOE]

Rules apply to the discharge of all pollutants from a point source to surface waters of the state. The rule does not apply to facilities that require both a state discharge permit and a federal...

211

Oklahoma Pollutant Discharge Elimination System Act (Oklahoma)  

Broader source: Energy.gov [DOE]

The Department of Environmental Quality regulates facilities that discharge any pollutant into waters of the state. Permits must be acquired before the discharge of any pollutants into state waters...

212

General Electric Lighting The last couple months at General Electric Lighting have been very exciting. In addition to the  

E-Print Network [OSTI]

a high voltage is applied to them, a plasma arc is formed, and the intense heat causes the electrons. I am still currently in the High Intensity Discharge (HID) division, working on a new outdoor lamp amounts of these elements are used to carefully control the color balance of the lamp. For example, sodium

Rollins, Andrew M.

213

Electrical Characterization of an RF Glow Discharge at Room Pressure  

SciTech Connect (OSTI)

A non-thermal atmospheric-like plasma source able to operate at room temperature represents, by its physical nature, a considerable potential for biological applications, given its highly accurate action and extremely controllable penetration on the surface of biological tissue. As we start up a research line into this technology, we report the electrical characterization of a room pressure plasma discharge by means of a coupling network model. The discharge is produced by a 13.56MHz commercial generator. As it is impossible to measure directly its state variables (voltage and current intensity) due to the considerable perturbation created by introducing a low impedance at the system output, then an indirect estimation of such variables is achieved from experimental diagnostics at the input, so to validate the proposed electrical model.

Perez-Martinez, J. A.; Piedad-Beneitez, A. de la [Instituto Tecnologico de Toluca, AP 890, Toluca (Mexico); Pena-Eguiluz, R.; Mercado-Cabrera, A.; Valencia A, R.; Barocio, S. R. [Instituto Nacional de Investigaciones Nucleares, AP 18-1027, 11801, Mexico D.F. (Mexico); Lopez-Callejas, R.; Godoy-Cabrera, O. G.; Benitez-Read, J. S.; Pacheco-Sotelo, J. O. [Instituto Tecnologico de Toluca, AP 890, Toluca (Mexico); Instituto Nacional de Investigaciones Nucleares, AP 18-1027, 11801, Mexico D.F. (Mexico)

2006-12-04T23:59:59.000Z

214

Focused shock spark discharge drill using multiple electrodes  

DOE Patents [OSTI]

A spark discharge focused drill provided with one pulse forming line or a number of pulse forming lines. The pulse forming line is connected to an array of electrodes which would form a spark array. One of the electrodes of each of the array is connected to the high voltage side of the pulse forming line and the other electrodes are at ground potential. When discharged in a liquid, these electrodes produce intense focused shock waves that can pulverize or fracture rock. By delaying the firing of each group of electrodes, the drill can be steered within the earth. Power can be fed to the pulse forming line either downhole or from the surface area. A high voltage source, such as a Marx generator, is suitable for pulse charging the lines.

Moeny, William M. (Albuquerque, NM); Small, James G. (Albuquerque, NM)

1988-01-01T23:59:59.000Z

215

The Intense Radiation Gas  

E-Print Network [OSTI]

We present a new dispersion relation for photons that are nonlinearly interacting with a radiation gas of arbitrary intensity due to photon-photon scattering. It is found that the photon phase velocity decreases with increasing radiation intensity, it and attains a minimum value in the limit of super-intense fields. By using Hamilton's ray equations, a self-consistent kinetic theory for interacting photons is formulated. The interaction between an electromagnetic pulse and the radiation gas is shown to produce pulse self-compression and nonlinear saturation. Implications of our new results are discussed.

M. Marklund; P. K. Shukla; B. Eliasson

2005-03-08T23:59:59.000Z

216

Generator of Rainfall And Discharge Extremes  

E-Print Network [OSTI]

Generator of Rainfall And Discharge Extremes (GRADE) for the Rhine and Meuse basins Report RWS RIZA 2007.027 KNMI-publication 218 #12;Generator of Rainfall And Discharge Extremes (GRADE) for the Rhine.027 KNMI-publication 218 ISBN 9789036914062 #12;2Generator of Rainfall And Discharge Extremes (GRADE

Stoffelen, Ad

217

2, 22872325, 2005 discharge+sediment  

E-Print Network [OSTI]

HESSD 2, 2287­2325, 2005 Water discharge+sediment flux changes in Lower Mekon River X. X. Lu and R Sciences Water discharge and sediment flux changes in the Lower Mekong River X. X. Lu and R. Y. Siew­2325, 2005 Water discharge+sediment flux changes in Lower Mekon River X. X. Lu and R. Y. Siew Title Page

Paris-Sud XI, Université de

218

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

219

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 Department’s 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.

220

Cold cathode vacuum discharge tube  

DOE Patents [OSTI]

A cold cathode vacuum discharge tube, and method for making same, with an interior surface of the trigger probe coated with carbon deposited by carbon vapor deposition (CVD) or diamond-like carbon (DLC) deposition. Preferably a solid graphite insert is employed in the probe-cathode structure in place of an aluminum bushing employed in the prior art. The CVD or DLC probe face is laser scribed to allow resistance trimming to match available trigger voltage signals and to reduce electrical aging.

Boettcher, Gordon E. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "intensity discharge lamps" 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

Wastewater Discharge Program (Maine) | Department of Energy  

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

Wastewater Discharge Program (Maine) Wastewater Discharge Program (Maine) Wastewater Discharge Program (Maine) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Buying & Making Electricity Program Info State Maine Program Type Siting and Permitting Provider Department of Environmental Protection The wastewater discharge regulations require that a license be obtained for the discharge of wastewater to a stream, river, wetland, or lake of the

222

Ion-molecule reactions and ion energies in a CF4 discharge  

Science Journals Connector (OSTI)

Absolute cross sections have been measured for reactants typically found in carbon tetrafluoride (CF4) discharges for collision energies below a few hundred electron volts. The reactions investigated include collision-induced dissociation and dissociative electron transfer reactions for CF3+ and F+ colliding with CF4, and collisional electron detachment for F- colliding with CF4. Also presented are measurements of energies and relative intensities of ions generated in dc Townsend CF4 discharges with E/N values ranging from 4×10-18?V m2 to 25×10-18?V m2 [4 to 25 kTd]. Ion energy and ion intensity data for the Townsend discharges are analyzed in light of the measured cross sections.

B. L. Peko; I. V. Dyakov; R. L. Champion; M. V. V. S. Rao; J. K. Olthoff

1999-12-01T23:59:59.000Z

223

DINA simulations of TCV electron cyclotron heating discharges  

Science Journals Connector (OSTI)

This paper reports on full tokamak discharge simulations in the TCV tokamak using the DINA code, of which a new open modular architecture version is presented. These new simulations include the effect of intense electron cyclotron heating, dissipated off-axis. The change in the plasma conductivity produces a time-varying plasma current profile, which in turn causes the plasma shape to relax in the almost constant vacuum quadrupole field. These simulations allow us to check on the diffusion of poloidal magnetic flux, as well as the modelling of the electron cyclotron heating.

V.E. Lukash; D. Raju; V.N. Dokouka; J.-Y. Favez; R.R. Khayrutdinov; J.B. Lister

2003-01-01T23:59:59.000Z

224

Evaluation of instantaneous surface water discharge techniques  

SciTech Connect (OSTI)

To obtain accurate discharge data in any surface water monitoring program, the selection of an appropriate technique is essential. This paper examines five instantaneous discharge techniques most commonly used throughout the Appalachian coal fields. The techniques evaluated in this paper include: (1) dye-dilution; (2) cross-sectional area-velocity; (3) weir; (4) Manning's equation; and (5) direct discharge. Each of the instantaneous discharge techniques was evaluated in terms of: (1) initial equipment investment cost per discharge determination; (2) the advantages and disadvantages of each technique; and (3) the appropriate application of each technique. From this evaluation, it was apparent that a combination of several techniques are needed to determine a variety of discharges depending on the characteristics of the discharge point.

Buckles, J.D.

1984-12-01T23:59:59.000Z

225

Le Bail Intensity Extraction  

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

Le Bail Intensity Extraction Le Bail Intensity Extraction Presentation Goal Introduce the concepts behind LeBail fitting; why it is useful and how to perform a Le Bail fit with GSAS. Format: PDF slides or a RealPlayer video of the slides with accompanying audio and a demo video that shows how a Le Bail fit is performed. Presentation Outline What is the Le Bail method? Other approaches Why use the Le Bail method? Parameter fitting with Le Bail intensity extraction Le Bail refinement strategies Avoiding problems with background fitting: BKGEDIT Demo: an example Le Bail fit Links Le Bail lecture Slides (as PDF file) FlashMovie presentation with index (best viewed with 1024x768 or better screen resolution) FlashMovie file (800x600 pixels) Le Bail demo FlashMovie presentation with index (best viewed with 1024x768 or

226

Discharge quencher for Geiger counters  

SciTech Connect (OSTI)

A discharge quencher for halogen Geiger counters with a total powercutoff time after the appearance of an input signal of -70 nsec and an input sensitivity of -50 mV is described. The circuit permits parallel control of five STS-5 counters for a quenching-pulse duration of 4.5 usec. Counting responses with slopes to 0.131%/V and a plateau width of 100 V at a load of 60,000 pulses/sec are obtained for two STS-5 counters. The maximum load is 120,000 pulses/sec.

Mushev, R.K.

1986-03-01T23:59:59.000Z

227

Confined plasma gliding arc discharges  

Science Journals Connector (OSTI)

A confined plasma gliding arc is produced in a reactor with two-electrodes contained within a very narrow channel and water spray injected into the discharge. The evolution of pH and conductivity and the formation of hydrogen peroxide in pure water with different carrier gases and the decolourisation and mineralisation of an organic dye were compared with results for a non-confined three-electrode gliding arc reactor. The energy efficiency for the decolourisation of an organic blue dye in the confined reactor is twice that of the non-confined reactor. Significant levels of total organic carbon are removed in the confined plasma reactor.

Radu Burlica; Bruce R. Locke

2008-01-01T23:59:59.000Z

228

A uniform glow discharge plasma source at atmospheric pressure  

Science Journals Connector (OSTI)

An atmospheric-pressure uniform continuous glowplasma was produced in ambient air assisted by argon feeding gas using a 13.56 MHz rf source. Based on the measured current–voltage curve and optical emission spectrum intensity the plasma showed typical glow discharge characteristics free from streamers and arc. The measured rotational and vibrational temperatures were in the range of 490 to 630 K and 2000 to 3300 K respectively within the operation range of argon flow rate and rf power. From the spatial measurement of total optical emission intensity and rotational and vibrational temperatures the plasma shows very high uniformity (over 93%) in the lengthwise direction. The plasma size for this study was 200 mm×50 mm×5 mm although a plasma was produced in the scaled-up version of 600 mm in length aiming for large-area plasma applications.

Se Youn Moon; W. Choe; B. K. Kang

2004-01-01T23:59:59.000Z

229

Energy Intensity Strategy  

E-Print Network [OSTI]

Our presentation will cover how we began the journey of conserving energy at our facility. We’ll discuss a basic layout of our energy intensity plan and the impact our team has had on the process, what tools we’re using, what goals have been...

Rappolee, D.; Shaw, J.

2008-01-01T23:59:59.000Z

230

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

231

Oklahoma Pollutant Discharge Elimination System (OPDES) Standards  

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

Oklahoma Pollutant Discharge Elimination System (OPDES) Standards Oklahoma Pollutant Discharge Elimination System (OPDES) Standards (Oklahoma) Oklahoma Pollutant Discharge Elimination System (OPDES) Standards (Oklahoma) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor Industrial Installer/Contractor Investor-Owned Utility Local Government Municipal/Public Utility Nonprofit Retail Supplier Rural Electric Cooperative State/Provincial Govt Systems Integrator Tribal Government Utility Program Info State Oklahoma Program Type Environmental Regulations Provider Oklahoma Department of Environmental Quality This program of the Water Quality Division of the Department of Environmental Quality sets the point source, biosolids (sewage sludge), and stormwater permitting standards for discharges to the waters of the State

232

Oil and Hazardous Substance Discharge Preparedness (Minnesota)  

Broader source: Energy.gov [DOE]

Anyone who owns or operates a vessel or facility that transports, stores, or otherwise handles hazardous wastes must take reasonable steps to prevent the discharge of those materials.

233

Characterization of electrical discharge machining plasmas.  

E-Print Network [OSTI]

??Electrical Discharge Machining (EDM) is a well-known machining technique since more than fifty years. Its principle is to use the eroding effect on the electrodes… (more)

Descoeudres, Antoine

2006-01-01T23:59:59.000Z

234

Electro discharge machining for micro manufacturing.  

E-Print Network [OSTI]

??Due to the high precision and good surface quality that it can give, Electrical Discharge Machining (EDM) is potentially an important process for the fabrication… (more)

Ivanov, Atanas

2008-01-01T23:59:59.000Z

235

Montana Pollutant Discharge Elimination System (MPDES) Webpage...  

Open Energy Info (EERE)

an overview of Montana's MPDES program for control point source discharges of wastewater. Author Montana Department of Environmental Quality Published State of Montana, Date...

236

CDPHE Industrial Individual Wastewater Discharge Permit Application...  

Open Energy Info (EERE)

Legal Document- Permit ApplicationPermit Application: CDPHE Industrial Individual Wastewater Discharge Permit ApplicationLegal Abstract Application provided by the Colorado...

237

California Waste Discharge Requirements Website | Open Energy...  

Open Energy Info (EERE)

Requirements Website Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: California Waste Discharge Requirements Website Abstract This website contains...

238

Application of high intensity UVC-LED for the removal of acetamiprid with the photo-Fenton process  

Science Journals Connector (OSTI)

Abstract Research into the use of light-emitting diodes (LED) for wastewater treatment has increased in recent years. \\{LEDs\\} are more efficient than other UV lamps because of their reduced heat dissipation and much longer life span. However, most of the UVC-LEDs that are currently available are of such low intensity that the large number of bulbs required for effective treatment of wastewater streams makes their application uneconomic. The development of higher intensity UVC-LEDs may therefore lead to more feasible technology options for wastewater treatment with UV-based advanced oxidation processes (AOPs). The aim of this work was to study the efficiency of high-intensity UVC-LED lamps (20 W/m2) for the removal of micropollutants with the photo-Fenton process. The pesticide acetamiprid was used as model pollutant at a concentration of 100 ?g/L in synthetic secondary effluent due to its recalcitrant nature. Degradation using a low-pressure UVC-lamp (LPL) was also assessed for comparative purposes. The process was operated at pH 2.8 and at natural pH. The volumetric photon absorption (VRPA) was calculated for the results at acidic pH, where the catalyst was soluble, to investigate the influence of iron and hydrogen peroxide concentrations on acetamiprid degradation, based on their absorption for both systems. A model was proposed and results indicated that the contribution of both hydrogen peroxide and iron to the generation of radicals was the same in the LED system. At natural pH, the high intensity LED system was effective in the removal of acetamiprid, achieving degradation in 20 min adding 1+1+1 mg Fe/L (sequential iron dosage) and 12 mg H2O2/L.

Irene Carra; José Antonio Sánchez Pérez; Sixto Malato; Olivier Autin; Bruce Jefferson; Peter Jarvis

2014-01-01T23:59:59.000Z

239

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

240

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 of CALiPER 20.1: Subjective Evaluation of Beam Quality, Shadow Quality, and Color Quality for LED PAR38 Lamps and discussed what attributes to...

Note: This page contains sample records for the topic "intensity discharge lamps" 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

Unlocking energy intensive habits  

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

energy intensive habits energy intensive habits Presentation at LBL Oct 10, 2013 by Hal Wilhite Professor and Research Director University of Oslo Centre for Development and the Environment Source: WWF US EIA Outlook 2011 Conventional framing of the energy consumption and savings * Sovereign consumers * Economically rational and persistentely reflexive. * Uninfluenced by social and material conditions of everyday life * Focus on efficiency and not on size and volume which is for the most part treated as an indifferent variable Cognitive reductionism The change of frame * From individual to socio-material * From rational/reflexive experience-based (practical) knowledge * From efficiency to reduction A theory of habit * Acknowledges the role of lived experience (history, both cultural and personal) in forming

242

The intensity of motivation  

E-Print Network [OSTI]

rearranged before they were repeated in reverse sequence. Electrocardiographic T-wave amplitude (TWA) and changes were monitored during a 15-sec anticipatory phase, as well as during each 15-second mental manipulation phase. (This ensured that the measures..., and the subject was surreptitiously observed. The high-self-esteem subjects were observed to do more practice www.annualreviews.org/aronline Annual Reviews INTENSITY OF MOTIVATION 121 problems for the difficult- than for the easy-to-please experimenter...

Brehm, Jack W.; Self, E. A.

1989-01-01T23:59:59.000Z

243

Coherent Anti-Stokes Raman Spectroscopy of Radio-Frequency Discharge Plasmas of Silane and Disilane  

Science Journals Connector (OSTI)

Coherent anti-Stokes Raman spectroscopy has been employed for the diagnosis of rf discharges of silane (SiH4) and disilane (Si2H6). The signal intensities from silane and disilane have been measured as a function of time after switching-on the rf power supplied to SiH4 and Si2H6 gas in a closed reaction chamber. From this measurement, the loss rates of silane and disilane have been determined directly as functions of the rf-power density and gas pressure for the first time. The rate of formation of SiH4 in disilane discharge plasmas has also been determined.

Nobuhiro Hata; Akihisa Matsuda; Kazunobu Tanaka

1986-01-01T23:59:59.000Z

244

Modes in a pulse-modulated radio-frequency dielectric-barrier glow discharge  

SciTech Connect (OSTI)

This letter reports an experimental study of a pulse-modulated radio-frequency dielectric-barrier discharge in atmospheric helium. By controlling the duty cycle at a modulation frequency of 10 and 100 kHz, the 13.56 MHz discharge is shown to operate in three different glow modes: the continuum mode, the discrete mode, and the transition mode. By investigating plasma ignition, residual electrons during power off are found to affect different glow modes. Duty cycle dependences of power density, gas temperature, optical emission intensities at 706 and 777 nm are used to capture clearly the characteristics of the three glow modes.

Shi, J. J.; Zhang, J.; Qiu, G. [College of Science, Donghua University, Shanghai 201620 (China); Walsh, J. L.; Kong, M. G. [Department of Electronic and Electrical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU (United Kingdom)

2008-07-28T23:59:59.000Z

245

Modes in a pulse-modulated radio-frequency dielectric-barrier glow discharge  

Science Journals Connector (OSTI)

This letter reports an experimental study of a pulse-modulated radio-frequency dielectric-barrier discharge in atmospheric helium. By controlling the duty cycle at a modulation frequency of 10 and 100 kHz the 13.56 MHz discharge is shown to operate in three different glow modes: the continuum mode the discrete mode and the transition mode. By investigating plasma ignition residual electrons during power off are found to affect different glow modes. Duty cycle dependences of power density gas temperature optical emission intensities at 706 and 777 nm are used to capture clearly the characteristics of the three glow modes.

J. J. Shi; J. Zhang; G. Qiu; J. L. Walsh; M. G. Kong

2008-01-01T23:59:59.000Z

246

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

247

Initiation of long, free-standing Z-discharges by CO2 laser gas heating  

SciTech Connect (OSTI)

High current discharge channels can neutralize both current and space charge of very intense ion beams. Therefore they are considered as an interesting alternative for the final focus and beam transport in a heavy ion beam fusion reactor. At the GSI accelerator facility, 50 cm long, stable, free-standing discharge channels with currents in excess of 40 kA in 2 to 25 mbar ammonia (NH{sub 3}) gas are investigated for heavy ion beam transport studies. The discharges are initiated by a CO{sub 2} laser pulse along the channel axis before the discharge is triggered. Resonant absorption of the laser, tuned to the {nu}{sub 2} vibration of the ammonia molecule, causes strong gas heating. Subsequent expansion and rarefaction of the gas prepare the conditions for a stable discharge to fulfill the requirements for ion beam transport. This paper describes the laser-gas interaction and the discharge initiation mechanism. We report on the channel stability and evolution, measured by fast shutter and streak imaging techniques. The rarefaction of the laser heated gas is studied by means of a hydrocode simulation.

Nieman, C.; Tauschwitz, A.; Penache, D.; Neff, S.; Knobloch, R.; Birkner, R.; Presura, R.; Hoffmann, D.H.H.; Yu, S.S.; Sharp, W.M.

2004-04-19T23:59:59.000Z

248

The discharge characteristics of the DUHOCAMIS with a high magnetic bottle-shaped field  

E-Print Network [OSTI]

For the purpose to produce high intensity, multiply charged metal ion beams, the DUHOCAMIS (dual hollow cathode ion source for metal ions) was derived from the hot cathode Penning ion source combined with the hollow cathode sputtering experiments in 2007. It was interesting to investigate the behavior of this discharge geometry in a stronger magnetic bottle-shaped field. So a new test bench for DUHOCAMIS with a high magnetic bottle-shaped field up to 0.6 T has been set up at Peking University, on which have been made primary experiments in connection with discharge characteristics of the source. The experiments with magnetic fields from 0.13 T to 0.52 T have shown that the magnetic flux densities are very sensitive to the discharge behavior: discharge curves and ion spectra. It has been found that the slope of discharge curves in a very wide range can be controlled by changing the magnetic field as well as regulated by adjusting cathode heating power. On the other hand, by comparison of discharge curves betwe...

Fu, Dongpo; Guo, Peng; Zhu, Kun; Wang, Jinghui; Hua, Jingshan; Ren, Xiaotang; Xue, Jianming; Zhao, Hongwei; Liu, Kexin

2014-01-01T23:59:59.000Z

249

The Spore Discharge Mechanism of Common Ferns  

Science Journals Connector (OSTI)

...subtended by the annular arc from pedicel to spore...unchanged during the discharge process. The decrease...modulus of the annular arc and the range of spores...by means of a piezo-electric device in a stream of...Ingold, C. T., Spore Discharge in Land Plants, Oxford...

Allen L. King

1944-01-01T23:59:59.000Z

250

Plasma discharge self-cleaning filtration system  

DOE Patents [OSTI]

The present invention is directed to a novel method for cleaning a filter surface using a plasma discharge self-cleaning filtration system. The method involves utilizing plasma discharges to induce short electric pulses of nanoseconds duration at high voltages. These electrical pulses generate strong Shockwaves that disintegrate and dislodge particulate matter located on the surface of the filter.

Cho, Young I.; Fridman, Alexander; Gutsol, Alexander F.; Yang, Yong

2014-07-22T23:59:59.000Z

251

Kinetic Effects In Hall Thruster Discharge  

E-Print Network [OSTI]

of a capacitive discharge. 4 capacitive discharge. For more info: V. Godyak, IEEE TPS 34, 755 (2006). #12 th twall interactions in Hall thrusters Large electron temperature andE JH~1cm secondary electron emission result in large particle and wall losses to the wall E , Jz z Br H~1cm 120 eV High SEE BN channel

Kaganovich, Igor

252

Helium corona-assisted air discharge  

SciTech Connect (OSTI)

Operation of atmospheric discharge of electronegative gases including air at low voltages yet without consuming any inert gas will enormously promote the application of non-thermal plasmas. By taking advantage of the low onset voltage for helium corona, air discharge was successfully launched at much reduced voltages with a needle-plate system partly contained in a helium-filled glass bulb--for a needle-plate distance of 12 mm, 1.0 kV suffices. Ultraviolet emission from helium corona facilitates the discharging of air, and the discharge current manifests distinct features such as relatively broad Trichel pulses in both half periods. This design allows safe and economic implementation of atmospheric discharge of electronegative gases, which will find a broad palette of applications in surface modification, plasma medicine and gas treatment, etc.

Jiang Nan; Gao Lei; Ji Ailing; Cao Zexian [Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2011-10-15T23:59:59.000Z

253

High intensity femtosecond enhancement cavities  

E-Print Network [OSTI]

To produce extreme ultraviolet radiation via high harmonic generation (HHG) in rare gases, light intensities in excess of 1014 W/cm 2 are required. Usually such high intensity are obtained by parametric amplification of ...

Abram, Gilberto

2009-01-01T23:59:59.000Z

254

Dynamics of multiple double layers in high pressure glow discharge in a simple torus  

SciTech Connect (OSTI)

Parametric characterization of multiple double layers is done during high pressure glow discharge in a toroidal vessel of small aspect ratio. Although glow discharge (without magnetic field) is known to be independent of device geometry, but the toroidal boundary conditions are conducive to plasma growth and eventually the plasma occupy the toroidal volume partially. At higher anode potential, the visibly glowing spots on the body of spatially extended anode transform into multiple intensely luminous spherical plasma blob structures attached to the tip of the positive electrode. Dynamics of multiple double layers are observed in argon glow discharge plasma in presence of toroidal magnetic field. The radial profiles of plasma parameters measured at various toroidal locations show signatures of double layer formation in our system. Parametric dependence of double layer dynamics in presence of toroidal magnetic field is presented here.

Kumar Paul, Manash, E-mail: manashkr@gmail.com [Department of Physics, National Institute of Technology Agartala, Tripura–799 046 (India); Sharma, P. K.; Thakur, A.; Kulkarni, S. V.; Bora, D. [Institute for Plasma Research, Bhat, Gandhinagar, Gujarat–382 428 (India)

2014-06-15T23:59:59.000Z

255

Contour dynamics model for electric discharges  

Science Journals Connector (OSTI)

We present an effective contour model for electrical discharges deduced as the asymptotic limit of the minimal streamer model for the propagation of electric discharges, in the limit of small electron diffusion. The incorporation of curvature effects to the velocity propagation and not to the boundary conditions is a feature and makes it different from the classical Laplacian growth models. The dispersion relation for a nonplanar two-dimensional discharge is calculated. The development and propagation of fingerlike patterns are studied and their main features quantified.

M. Arrayás, M. A. Fontelos, and C. Jiménez

2010-03-18T23:59:59.000Z

256

Acoustic Emission Mapping of Discharges in Spark Erosion Machining.  

E-Print Network [OSTI]

?? Electrical discharge machining (EDM) is a non-conventional machining process utilizing a series of electrical discharges to melt and vaporize workpiece material. In a wire… (more)

Smith, Craig

2012-01-01T23:59:59.000Z

257

Report of Waste Discharge application (Form 200) | Open Energy...  

Open Energy Info (EERE)

application (Form 200) Jump to: navigation, search OpenEI Reference LibraryAdd to library Form: Report of Waste Discharge application (Form 200) Abstract Persons discharging or...

258

Hydrothermal Heat Discharge In The Cascade Range, Northwestern...  

Open Energy Info (EERE)

Heat Discharge In The Cascade Range, Northwestern United States Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Hydrothermal Heat Discharge In...

259

WSDE Report: Wastewater Discharge Permits in Washington State...  

Open Energy Info (EERE)

Wastewater Discharge Permits in Washington State Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: WSDE Report: Wastewater Discharge Permits in Washington...

260

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

Note: This page contains sample records for the topic "intensity discharge lamps" 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

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.

262

Investigation on oblique shock wave control by arc discharge plasma in supersonic airflow  

SciTech Connect (OSTI)

Wedge oblique shock wave control by arc discharge plasma in supersonic airflow was investigated theoretically, experimentally, and numerically in this paper. Using thermal choking model, the change in oblique shock wave was deduced, which refer that the start point of shock wave shifts upstream, the shock wave angle decreases, and its intensity weakens. Then the theoretical results were validated experimentally in a Mach 2.2 wind tunnel. On the test conditions of arc discharge power of approx1 kW and arc plasma temperature of approx3000 K, schlieren photography and gas pressure measurements indicated that the start point of shock wave shifted upstream of approx4 mm, the shock wave angle decreased 8.6%, and its intensity weakened 8.8%. The deduced theoretical results match the test results qualitatively, so thermal mechanism and thermal choking model are rational to explain the problem of oblique shock wave control by arc discharge plasma. Finally, numerical simulation was developed. Based on thermal mechanism, the arc discharge plasma was simplified as a thermal source term that added to the Navier-Stokes equations. The simulation results of the change in oblique shock wave were consistent with the test results, so the thermal mechanism indeed dominates the oblique shock wave control process.

Wang Jian; Li Yinghong [Engineering College, Air Force Engineering University, Xi'an 710038 (China); Xing Fei [College of Economics and Management, Northwest University of Politics and Law, Xi'an 710063 (China)

2009-10-01T23:59:59.000Z

263

Glow discharge plasma deposition of thin films  

DOE Patents [OSTI]

A glow discharge plasma reactor for deposition of thin films from a reactive RF glow discharge is provided with a screen positioned between the walls of the chamber and the cathode to confine the glow discharge region to within the region defined by the screen and the cathode. A substrate for receiving deposition material from a reactive gas is positioned outside the screened region. The screen is electrically connected to the system ground to thereby serve as the anode of the system. The energy of the reactive gas species is reduced as they diffuse through the screen to the substrate. Reactive gas is conducted directly into the glow discharge region through a centrally positioned distribution head to reduce contamination effects otherwise caused by secondary reaction products and impurities deposited on the reactor walls.

Weakliem, Herbert A. (Pennington, NJ); Vossen, Jr., John L. (Bridgewater, NJ)

1984-05-29T23:59:59.000Z

264

Transition from Glow to Arc Discharge  

Science Journals Connector (OSTI)

... I HAVE suggested1 a mechanism to account for the occurrence of long electrical discharges in ... in electric fields which are only of the order of one per cent of those generally believed2 ...

CHAS. E. R. BRUCE

1948-04-03T23:59:59.000Z

265

Discharge dynamics of pin-to-plate dielectric barrier discharge at atmospheric pressure  

SciTech Connect (OSTI)

The discharge dynamics of pin-to-plate dielectric barrier discharge was studied in atmospheric helium at 20 kHz. The discharge was predominately ignited in positive half cycle of applied voltage with sinusoidal waveform. The temporal evolution of the discharge was investigated vertically along the discharge gap and radically on the dielectric surface by time resolved imaging. It is found that a discharge column with a diameter of 2 mm was ignited above the pin electrode and expanded toward a plate electrode. On the dielectric surface with space charge accumulation, plasma disk in terms of plasma ring was formed with radius up to 25 mm. The expansion velocity of plasma ring can reach a hypersonic speed of 3.0 km/s. The ionization wave due to electron diffusion is considered to be the mechanism for plasma ring formation and dynamics.

Sun Liqun [College of Science, Donghua University, Shanghai 201620 (China); Huang, Xiaojiang [College of Science, Donghua University, Shanghai 201620 (China); Member of Magnetic Confinement Fusion Research Center, Ministry of Education of the People's Republic of China, Shanghai 201620 (China); Zhang Jie [College of Science, Donghua University, Shanghai 201620 (China); State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620 (China); Zhang Jing; Shi, J. J. [College of Science, Donghua University, Shanghai 201620 (China); State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620 (China); Member of Magnetic Confinement Fusion Research Center, Ministry of Education of the People's Republic of China, Shanghai 201620 (China)

2010-11-15T23:59:59.000Z

266

Transition probabilities and lifetimes in singly ionized rhenium  

Science Journals Connector (OSTI)

......a hollow cathode discharge lamp by Wahlgren...was based on the arc and spark spectra...correction to the electric dipole transition...with the observed arc and spark intensities...their hollow cathode discharge so that the measured...noticed that the arc intensities of Meggers......

P. Palmeri; P. Quinet; É. Biémont; H. L. Xu; S. Svanberg

2005-10-01T23:59:59.000Z

267

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

268

Magnetic dipole discharges. II. Cathode and anode spot discharges and probe diagnostics  

SciTech Connect (OSTI)

The high current regime of a magnetron-type discharge has been investigated. The discharge uses a permanent magnet as a cold cathode which emits secondary electrons while the chamber wall or a grounded electrode serves as the anode. As the discharge voltage is increased, the magnet develops cathode spots, which are short duration arcs that provide copious electrons to increase the discharge current dramatically. Short (1 ?s), high current (200 A) and high voltage (750 V) discharge pulses are produced in a relaxation instability between the plasma and a charging capacitor. Spots are also observed on a negatively biased plane Langmuir probe. The probe current pulses are as large as those on the magnet, implying that the high discharge current does not depend on the cathode surface area but on the properties of the spots. The fast current pulses produce large inductive voltages, which can reverse the electrical polarity of the magnet and temporarily operate it as an anode. The discharge current may also oscillate at the frequency determined by the charging capacitor and the discharge circuit inductance. Each half cycle of high-current current pulses exhibits a fast (?10 ns) current rise when a spot is formed. It induces high frequency (10–100 MHz) transients and ringing oscillations in probes and current circuits. Most probes behave like unmatched antennas for the electromagnetic pulses of spot discharges. Examples are shown to distinguish the source of oscillations and some rf characteristics of Langmuir probes.

Stenzel, R. L.; Urrutia, J. M. [Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States)] [Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States); Ionita, C.; Schrittwieser, R. [Institute for Ion Physics and Applied Physics, University of Innsbruck, A-6020 Innsbruck (Austria)] [Institute for Ion Physics and Applied Physics, University of Innsbruck, A-6020 Innsbruck (Austria)

2013-08-15T23:59:59.000Z

269

energy intensity | OpenEI  

Open Energy Info (EERE)

intensity intensity Dataset Summary Description Energy intensity data and documentation published by the U.S. DOE's office of Energy Efficiency and Renewable Energy (EERE). Energy intensity is defined as: amount of energy used in producing a given level of output or activity; expressed as energy per unit of output. This is the energy intensity of the the electricity sector, which is an energy consuming sector that generates electricity. Data are organized to separate electricity-only generators from combined heat and power (CHP) generators. Data is available for the period 1949 - 2004. Source EERE Date Released May 31st, 2006 (8 years ago) Date Updated Unknown Keywords Electricity Energy Consumption energy intensity fossil fuels renewable energy Data application/vnd.ms-excel icon electricity_indicators.xls (xls, 2.1 MiB)

270

The effect of photoionization as an auxiliary discharge on characteristics of thermionic energy converter  

SciTech Connect (OSTI)

The cesium filled thermionic energy converters (TEC) operated by the ignited mode have been expected as novel electric power generators, suitable for the space power systems and such terrestrial uses as cogeneration devices. They have the advantage free from the maintenance because of the device without any moving parts. However, the gaps of the electrodes are usually kept less than 1 mm to suppress the negative space potential in the space between the electrodes. Furthermore, for the ignited mode operation, the emitter should be heated up to the temperature higher than 1700 K. Such a restriction and the operating condition should be relaxed to make TEC spread by manufacturing at a moderate price. In the present work, the effect of an auxiliary discharge due to the photoionization has been examined by using TEC operated by the unignited mode with a longer electrode gap, compared with conventional one. It is clarified that the space charge neutrality in the space between both electrodes is drastically improved by the irradiation of Xenon lamp in the case of the emitter temperature lower than 1100 K and that the output current increases by a few times, compared with one without irradiation. This is caused by the photoionized plasma whose density is nearly 10{sup 9} cm{sup -3}.

Furukawa, H.; Kando, M. [Shizuoka Univ., Hamamatsu (Japan); Yamada, J. [Aich Institute of Technology, Toyota (Japan)

1995-12-31T23:59:59.000Z

271

Magnetic dipole discharges. I. Basic properties  

SciTech Connect (OSTI)

A simple discharge is described which uses a permanent magnet as a cold cathode and the metallic chamber wall as an anode. The magnet's equator is biased strongly negative, which produces secondary electrons due to the impact of energetic ions. The emitted electrons are highly confined by the strong dipolar magnetic field and the negative potential in the equatorial plane of the magnet. The emitted electrons ionize near the sheath and produce further electrons, which drift across field lines to the anode while the nearly unmagnetized ions are accelerated back to the magnet. A steady state discharge is maintained at neutral pressures above 10{sup ?3} mbar. This is the principle of magnetron discharges, which commonly use cylindrical and planar cathodes rather than magnetic dipoles as cathodes. The discharge properties have been investigated in steady state and pulsed mode. Different magnets and geometries have been employed. The role of a background plasma has been investigated. Various types of instabilities have been observed such as sheath oscillations, current-driven turbulence, relaxation instabilities due to ionization, and high frequency oscillations created by sputtering impulses, which are described in more detail in companion papers. The discharge has also been operated in reactive gases and shown to be useful for sputtering applications.

Stenzel, R. L.; Urrutia, J. M. [Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States)] [Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States); Teodorescu-Soare, C. T.; Ionita, C.; Schrittwieser, R. [Institute for Ion Physics and Applied Physics, University of Innsbruck, A-6020 Innsbruck (Austria)] [Institute for Ion Physics and Applied Physics, University of Innsbruck, A-6020 Innsbruck (Austria)

2013-08-15T23:59:59.000Z

272

Discharge characteristics of atmospheric-pressure radio-frequency glow discharges with argon/nitrogen  

SciTech Connect (OSTI)

In this letter, atmospheric-pressure glow discharges in {gamma} mode with argon/nitrogen as the plasma-forming gas using water-cooled, bare copper electrodes driven by radio-frequency power supply at 13.56 MHz are achieved. The preliminary studies on the discharge characteristics show that, induced by the {alpha}-{gamma} coexisting mode or {gamma} mode discharge of argon, argon-nitrogen mixture with any mixing ratios, even pure nitrogen, can be employed to generate the stable {gamma} mode radio-frequency, atmospheric-pressure glow discharges and the discharge voltage rises with increasing the fraction of nitrogen in the argon-nitrogen mixture for a constant total gas flow rate.

Wang Huabo; Sun Wenting; Li Heping; Bao Chengyu; Gao Xing; Luo Huiying [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China); School of Public Health and Family Medicine, Capital University of Medical Sciences, Beijing 100069 (China); Beijing Center for Diseases Control and Prevention, Beijing 100013 (China)

2006-10-16T23:59:59.000Z

273

Central peaking of magnetized gas discharges  

SciTech Connect (OSTI)

Partially ionized gas discharges used in industry are often driven by radiofrequency (rf) power applied at the periphery of a cylinder. It is found that the plasma density n is usually flat or peaked on axis even if the skin depth of the rf field is thin compared with the chamber radius a. Previous attempts at explaining this did not account for the finite length of the discharge and the boundary conditions at the endplates. A simple 1D model is used to focus on the basic mechanism: the short-circuit effect. It is found that a strong electric field (E-field) scaled to electron temperature T{sub e}, drives the ions inward. The resulting density profile is peaked on axis and has a shape independent of pressure or discharge radius. This “universal” profile is not affected by a dc magnetic field (B-field) as long as the ion Larmor radius is larger than a.

Chen, Francis F. [Electrical Engineering Department, University of California, Los Angeles, California 90095 (United States)] [Electrical Engineering Department, University of California, Los Angeles, California 90095 (United States); Curreli, Davide [Department of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801 (United States)] [Department of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801 (United States)

2013-05-15T23:59:59.000Z

274

Characteristics of the Dense Plasma Focus Discharge  

Science Journals Connector (OSTI)

The dense plasma focus discharge is produced in a hydromagnetic coaxial plasma accelerator. The final heating and compression of the plasma is accomplished by a partial conversion of the stored magnetic energy residing in the region behind the current sheath to plasma energy. The electrical behavior of the discharge is examined to determine the fraction of the initial energy involved in mechanical sheath motion inductive storage in the accelerator and Ohmic losses associated with the external and plasma discharge. Many analysis of this kind of datum show no definite correlation between the energy converted and neutron production. Presumably this arises from a lack of information as to how the collapse uses this energy and to the amount of plasma ejected from the dense plasma region during the collapse. From soft x?ray pinhole and Schlieren photographs the collapse and the development of the dense plasma is unquestionably a two?dimensional pinch compression.

Joseph W. Mather; Paul J. Bottoms

1968-01-01T23:59:59.000Z

275

Accelerators for Intensity Frontier Research  

SciTech Connect (OSTI)

In 2008, the Particle Physics Project Prioritization Panel identified three frontiers for research in high energy physics, the Energy Frontier, the Intensity Frontier, and the Cosmic Frontier. In this paper, I will describe how Fermilab is configuring and upgrading the accelerator complex, prior to the development of Project X, in support of the Intensity Frontier.

Derwent, Paul; /Fermilab

2012-05-11T23:59:59.000Z

276

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

277

ITP Energy Intensive Processes: Energy-Intensive Processes Portfolio...  

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

teChnologIes Program IntroduCtIon the research and development (r&d) portfolio for energy-Intensive Processes (eIP) addresses the top technology opportunities to save energy...

278

Influence of discharge gap on the discharge stability in a short vacuum arc ion source  

SciTech Connect (OSTI)

The influence of the discharge gap between cathode and anode on the discharge stability in a short vacuum arc (SVA) ion source is presented in this paper. Planar cathode and cylindrical hollow anode made of titanium are investigated. There is a great need in present accelerator injection research for SVA source to produce the small deviation of the ion current beam. Current research shows that increasing the short discharge gap can reduce the level of ion current deviation and ion charge deviation from 29% and 31% to 15% and 17%, respectively. A microplasma plume generation mechanism in SVA and scanning electron microscopic results can be used to explain this interesting phenomenon.

Chen, L. [Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Department of Engineering Physics, Tsinghua University, Beijing 100084 (China); Zhang, G. L.; Jin, D. Z.; Dai, J. Y. [Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Yang, L. [Institute of Nuclear Science and Technology, Louzhou University, Lanzhou, Gansu 730000 (China)

2012-02-15T23:59:59.000Z

279

Neutral particle beam intensity controller  

DOE Patents [OSTI]

The neutral beam intensity controller is based on selected magnetic defocusing of the ion beam prior to neutralization. The defocused portion of the beam is dumped onto a beam dump disposed perpendicular to the beam axis. Selective defocusing is accomplished by means of a magnetic field generator disposed about the neutralizer so that the field is transverse to the beam axis. The magnetic field intensity is varied to provide the selected partial beam defocusing of the ions prior to neutralization. The desired focused neutral beam portion passes along the beam path through a defining aperture in the beam dump, thereby controlling the desired fraction of neutral particles transmitted to a utilization device without altering the kinetic energy level of the desired neutral particle fraction. By proper selection of the magnetic field intensity, virtually zero through 100% intensity control of the neutral beam is achieved.

Dagenhart, W.K.

1984-05-29T23:59:59.000Z

280

Gamma radiation field intensity meter  

DOE Patents [OSTI]

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

Thacker, L.H.

1995-10-17T23:59:59.000Z

Note: This page contains sample records for the topic "intensity discharge lamps" 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

Gamma radiation field intensity meter  

DOE Patents [OSTI]

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

Thacker, L.H.

1994-08-16T23:59:59.000Z

282

Gamma radiation field intensity meter  

DOE Patents [OSTI]

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

Thacker, Louis H. (Knoxville, TN)

1995-01-01T23:59:59.000Z

283

Gamma radiation field intensity meter  

DOE Patents [OSTI]

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

Thacker, Louis H. (Knoxville, TN)

1994-01-01T23:59:59.000Z

284

Electrochemical and Electro-Discharge Machining with a Threshold Current  

Science Journals Connector (OSTI)

......machining and electro-discharge machining of a metal...problems in which the electric potential satisfies...ECM), electro-discharge machining (EDM...method of electrochemical arc machining (ECAM...depending upon the local electric current density. In......

A. A. LACEY; M. SHILLOR

1987-01-01T23:59:59.000Z

285

CONTROL OF AN ARC DISCHARGE BY MEANS OF A GRID  

Science Journals Connector (OSTI)

CONTROL OF AN ARC DISCHARGE BY MEANS OF A GRID Albert...Research Laboratory, General Electric Co., Schenectady , N. Y. CONTROL OF AN ARC DISCHARGE BY MEANS OF A GRID. | Research Laboratory, General Electric Co., Schenectady , N...

Albert W. Hull; Irving Langmuir

1929-01-01T23:59:59.000Z

286

Discharge convective instability as modifier of nonlinear hydrodynamic spectrum  

E-Print Network [OSTI]

Discharge source is considered as modifier of flow hydrodynamic spectrum. Characteristic frequency of nonlinear spectrum and spectrum power were determined under conditions of arc sliding discharge in supersonic flow. Two stages of discharge were defined: sliding stage and still stage. It was found that stage transition occurs due to convective instability of discharge. Fraction of sliding stage in overall discharge duration is determined by averaged current that is general stable discharge parameter. This phenomenon gives opportunity to control power of pressure fluctuations spectrum. Theoretical insight of field and hydrodynamic factors influencing on pulsations frequency was achieved. Hydrodynamic resistance of discharge region and holding cathode electric field turned out to be basic factors of frequency modification. Corresponding experimental verification was taken. Basic frequency law was determined for several discharge regimes.

Sergey Kamenshchikov

2012-04-26T23:59:59.000Z

287

Montana Facilities Which Do Not Discharge Process Wastewater...  

Open Energy Info (EERE)

Which Do Not Discharge Process Wastewater (MDEQ Form 2E) Jump to: navigation, search OpenEI Reference LibraryAdd to library Form: Montana Facilities Which Do Not Discharge Process...

288

A power supply unit for discharging the plasma electron source  

Science Journals Connector (OSTI)

A power supply unit for discharging a low-temperature plasma generator based on discharge in the crossed electric and magnetic fields is described. The unit operates in a stationary mode with a preset stabiliz...

D. A. Antonovich; V. A. Gruzdev; V. G. Zalesskii…

289

Saddle-field glow-discharge deposition of amorphous semiconductors  

SciTech Connect (OSTI)

The authors present a dc saddle-field glow-discharge deposition procedure which combines the positive attributes of the conventional dc and rf glow-discharge techniques. Preliminary mass spectra analyses of both silane and methane glow-discharges demonstrates that ions constitute a significant fraction of the species reaching the film surface. Growth rate analyses suggest that ions play a significant role in the saddle-field glow-discharge deposition of amorphous semiconducting films.

Gaspari, F.; Sidhu, L.S.; O`Leary, S.K.; Zukotynski, S. [Univ. of Toronto, Ontario (Canada). Dept. of Electrical and Computer Engineering

1996-12-31T23:59:59.000Z

290

Continuous nanoparticle generation and assembly by atmospheric pressure arc discharge  

E-Print Network [OSTI]

Continuous nanoparticle generation and assembly by atmospheric pressure arc discharge Jesse J. Cole a dc arc discharge plasma. The particles are positively charged by the arc and form a room temperature precursor materials.5,6 High temperature plasmas in the form of dc arc discharges led to the discovery

Jacobs, Heiko O.

291

Frequency spectrum analysis of electromagnetic waves radiated by electrical discharges  

Science Journals Connector (OSTI)

In this study, we analyzed the frequency spectrum of the electromagnetic waves radiated by an electric discharge as a basic method for developing an on-line diagnostic technique for power equipment installed inside closed-switchboards. In order to simulate ... Keywords: closed-switchboard, electromagnetic shielding room, electromagnetic wave, frequency spectrum, local discharge, series arc discharge

Hyeon-Kyu Cha; Sun-Jae Kim; Dae-Won Park; Gyung-Suk Kil

2011-03-01T23:59:59.000Z

292

Multiobjective optimization of the dry electric discharge machining process  

E-Print Network [OSTI]

January 15, 2009 Abstract Dry Electric Discharge Machining (EDM) is an environment­friendly modification: Electric Discharge Machining (EDM), Dry EDM, Design of experiments, Multi­objective optimization, NSGA II;1 Introduction Electric Discharge Machining (EDM) is a thermo­electric process in which material removal takes

Paris-Sud XI, Université de

293

Gas mixture for diffuse-discharge switch  

DOE Patents [OSTI]

Gaseous medium in a diffuse-discharge switch of a high-energy pulse generator is formed of argon combined with a compound selected from the group consisting of CF/sub 4/, C/sub 2/F/sub 6/, C/sub 3/F/sub 8/, n-C/sub 4/F/sub 10/, WF/sub 6/, (CF/sub 3/)/sub 2/S and (CF/sub 3/)/sub 2/O.

Christophorou, L.G.; Carter, J.G.; Hunter, S.R.

1982-08-31T23:59:59.000Z

294

Spectroscopic diagnostics of a pulsed discharge in high-pressure argon  

SciTech Connect (OSTI)

Results of investigation of high-pressure argon plasma excited by a high-current pulsed volume discharge are presented. The plasma diagnostics employs spatiotemporal dependences of the emission intensity in the VUV - visible range. A homogenous discharge is observed at pressures up to 10 atm. It is found that the spectrum of the UV - visible photorecombination continuum is sensitive to the discharge constriction. Change in the shape of the spectrum is caused bythe change of the type of positive charge carriers upon passing of the discharge from the uniform phase (molecular Ar{sub 2}{sup +} ions) to the arc phase (atomic Ar{sup +} ions). Experimental data and model calculations show that the electron heating after the main excitation pulse is a highly undesirable process. It slows down the recombination flow in the plasma, which results in stretching of all the kinetic processes for all excited components in time, and hence in a decrease in the peak values of their concentrations. Electron collision-induced mixing effi-ciently converts the reservoir of long-lived Ar{sub 2}* molecules in the triplet state into rapidly emitting singlet excimers. It is this mechanism that dominates the production of singlet Ar{sub 2}* excimer molecules. The threshold concentration needed to obtain lasing at a wavelength of 127 nm on Ar{sub 2}* excimers ({sup 1{Sigma}+}{sub u(v=0)}) was, according to calculations, about 5x10{sup 15} cm{sup -3} for the gain 0.05 cm{sup -1}. This concentration can be achieved in the case of homogeneous pulsed discharge pumping with the peak electron concentration 2.x10{sup 16} cm{sup -3} at the argon pressure 10 atm.

Treshchalov, A B; Lissovskii, A A [Institute of Physics, University of Tartu, Tartu (Estonia)

2010-05-26T23:59:59.000Z

295

Changes in Energy Intensity 1985-1991  

Gasoline and Diesel Fuel Update (EIA)

Changes in Energy Intensity Changes in Energy Intensity 1985-1991 Overview Full Report The focus is on intensity of energy use measured by energy consumption relative to constant...

296

General Conditions Applicable to Water Discharge Permits and Procedures and  

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

General Conditions Applicable to Water Discharge Permits and General Conditions Applicable to Water Discharge Permits and Procedures and Criteria for Issuing Water Discharge Permits (Connecticut) General Conditions Applicable to Water Discharge Permits and Procedures and Criteria for Issuing Water Discharge Permits (Connecticut) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection

297

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. It can accommodate irradiated plasma facing component materials and sub-size mock-up divertor components. Two PALs currently available at Oak Ridge National Laboratory can provide maximum incident heat fluxes of 4.2 and 27 MW m?2, which are prototypic of fusion steady state heat flux conditions, over a heated area of 9 ? 12 and 1 ? 10 cm2, 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

298

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

299

Sensitive glow discharge ion source for aerosol and gas analysis  

DOE Patents [OSTI]

A high sensitivity glow discharge ion source system for analyzing particles includes an aerodynamic lens having a plurality of constrictions for receiving an aerosol including at least one analyte particle in a carrier gas and focusing the analyte particles into a collimated particle beam. A separator separates the carrier gas from the analyte particle beam, wherein the analyte particle beam or vapors derived from the analyte particle beam are selectively transmitted out of from the separator. A glow discharge ionization source includes a discharge chamber having an entrance orifice for receiving the analyte particle beam or analyte vapors, and a target electrode and discharge electrode therein. An electric field applied between the target electrode and discharge electrode generates an analyte ion stream from the analyte vapors, which is directed out of the discharge chamber through an exit orifice, such as to a mass spectrometer. High analyte sensitivity is obtained by pumping the discharge chamber exclusively through the exit orifice and the entrance orifice.

Reilly, Peter T. A. (Knoxville, TN)

2007-08-14T23:59:59.000Z

300

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

Note: This page contains sample records for the topic "intensity discharge lamps" 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

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

302

Low-Pressure Sodium Lighting Basics | Department of Energy  

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

Low-Pressure Sodium Lighting Basics Low-Pressure Sodium Lighting Basics Low-Pressure Sodium Lighting Basics August 16, 2013 - 10:17am Addthis Low-pressure sodium lighting provides more energy-efficient outdoor lighting than high-intensity discharge lighting, but it has very poor color rendition. Typical applications include highway and security lighting, where color is not important. Low-pressure sodium lamps work somewhat like fluorescent lamps. Like high-intensity discharge lighting, low-pressure sodium lamps require up to 10 minutes to start and have to cool before they can restart. Therefore, they are most suitable for applications in which they stay on for hours at a time. They are not suitable for use with motion detectors. The chart below compares low-pressure sodium lamps and high-intensity

303

Intensive Skills Activities CAREERS SERVICE  

E-Print Network [OSTI]

in the state under the cover of night and in broad daylight, perhaps swimming in ship ballast water, tucked and the rest of the world focus more intensely on producing fuels and energy from grasses and other non to subscribe (it's free!), send a note to Futures Editor, 109 Agriculture Hall, Michigan State University, East

Bristol, University of

304

Neutral particle beam intensity controller  

DOE Patents [OSTI]

A neutral beam intensity controller is provided for a neutral beam generator in which a neutral beam is established by accelerating ions from an ion source into a gas neutralizer. An amplitude modulated, rotating magnetic field is applied to the accelerated ion beam in the gas neutralizer to defocus the resultant neutral beam in a controlled manner to achieve intensity control of the neutral beam along the beam axis at constant beam energy. The rotating magnetic field alters the orbits of ions in the gas neutralizer before they are neutralized, thereby controlling the fraction of neutral particles transmitted out of the neutralizer along the central beam axis to a fusion device or the like. The altered path or defocused neutral particles are sprayed onto an actively cooled beam dump disposed perpendicular to the neutral beam axis and having a central open for passage of the focused beam at the central axis of the beamline. Virtually zero therough 100% intensity control is achieved by varying the magnetic field strength without altering the ion source beam intensity or its species yield.

Dagenhart, William K. (Oak Ridge, TN)

1986-01-01T23:59:59.000Z

305

HIGH-RESOLUTION FOURIER TRANSFORM SPECTROSCOPY OF LANTHANUM IN Ar DISCHARGE IN THE NEAR-INFRARED  

SciTech Connect (OSTI)

A high-resolution spectrum of lanthanum has been recorded by a Fourier Transform spectrometer in the wavelength range from 833 nm to 1666 nm (6000 cm{sup –1} to 12,000 cm{sup –1}) using as light source a hollow cathode lamp operated with argon as the discharge carrier gas. In total, 2386 spectral lines were detected in this region, of which 555 lines could be classified as La I transitions and 10 lines as La II transitions. All La II transitions and 534 of these La I transitions were classified for the first time, and 6 of the La II transitions and 433 of the classified La I transitions appear to be new lines, which could not be found in the literature. The corresponding energy level data of classified lines are given. Additionally, 430 lines are assigned as Ar I lines and 394 as Ar II lines, of which 179 and 77, respectively, were classified for the first time. All 77 classified Ar II transitions as well as 159 of the classified Ar I transitions are new lines. Furthermore, the wavenumbers of 997 unclassified spectral lines were determined, 235 of which could be assigned as La lines, because of their hyperfine pattern. The remaining 762 lines may be either unclassified Ar lines or unresolved and unclassified La lines with only one symmetrical peak with an FWHM in the same order of magnitude as the Ar lines. The accuracy of the wavenumber for the classified lines with signal-to-noise-ratio higher than four is better than 0.006 cm{sup –1} which corresponds to an accuracy of 0.0004 nm at 830 nm and 0.0017 nm at 1660 nm, respectively.

Güzelçimen, F.; Ba?ar, Gö. [Faculty of Science, Physics Department, Istanbul University, Tr-34134 Vezneciler, Istanbul (Turkey); Tamanis, M.; Kruzins, A.; Ferber, R. [Laser Centre, The University of Latvia, Rainis Boulevard 19, LV-1586 Riga (Latvia); Windholz, L. [Institut für Experimentalphysik, Technische Universität Graz, A-8010 Graz, Petersgasse 16 (Austria); Kröger, S., E-mail: gbasar@istanbul.edu.tr, E-mail: sophie.kroeger@htw-berlin.de [Hochschule für Technik und Wirtschaft Berlin, Wilhelminenhofstr. 75A, D-12459 Berlin (Germany)

2013-10-01T23:59:59.000Z

306

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..................................................................................................

307

Analysis of radiofrequency discharges in plasma  

DOE Patents [OSTI]

Separation of laser optogalvanic signals in plasma into two components: (1) an ionization rate change component, and (2) a photoacoustic mediated component. This separation of components may be performed even when the two components overlap in time, by measuring time-resolved laser optogalvanic signals in an rf discharge plasma as the rf frequency is varied near the electrical resonance peak of the plasma and associated driving/detecting circuits. A novel spectrometer may be constructed to make these measurements. Such a spectrometer would be useful in better understanding and controlling such processes as plasma etching and plasma deposition. 15 figs.

Kumar, D.; McGlynn, S.P.

1992-08-04T23:59:59.000Z

308

Analysis of radiofrequency discharges in plasma  

DOE Patents [OSTI]

Separation of laser optogalvanic signals in plasma into two components: (1) an ionization rate change component, and (2) a photoacoustic mediated component. This separation of components may be performed even when the two components overlap in time, by measuring time-resolved laser optogalvanic signals in an rf discharge plasma as the rf frequency is varied near the electrical resonance peak of the plasma and associated driving/detecting circuits. A novel spectrometer may be constructed to make these measurements. Such a spectrometer would be useful in better understanding and controlling such processes as plasma etching and plasma deposition.

Kumar, Devendra (Baton Rouge, LA); McGlynn, Sean P. (Baton Rouge, LA)

1992-01-01T23:59:59.000Z

309

Ultraviolet-B radiation enhancement in dielectric barrier discharge based xenon chloride exciplex source by air  

SciTech Connect (OSTI)

A single barrier dielectric barrier discharge tube of quartz with multi-strip Titanium-Gold (Ti-Au) coatings have been developed and utilized for ultraviolet-B (UV-B) radiation production peaking at wavelength 308?nm. The observed radiation at this wavelength has been examined for the mixtures of the Xenon together with chlorine and air admixtures. The gas mixture composition, chlorine gas content, total gas pressure, and air pressure dependency of the UV intensity, has been analyzed. It is found that the larger concentration of Cl{sub 2} deteriorates the performance of the developed source and around 2% Cl{sub 2} in this source produced optimum results. Furthermore, an addition of air in the xenon and chlorine working gas environment leads to achieve same intensity of UV-B light but at lower working gas pressure where significant amount of gas is air.

Gulati, P., E-mail: pgulati1512@gmail.com [CSIR-Central Electronics Engineering Research Institute (CSIR-CEERI), Pilani, Rajasthan-333031 (India); Department of Physics, Banasthali University, P.O. Banasthali Vidyapith, Rajasthan 304022 (India); Prakash, R.; Pal, U. N.; Kumar, M. [CSIR-Central Electronics Engineering Research Institute (CSIR-CEERI), Pilani, Rajasthan-333031 (India); Vyas, V. [Department of Physics, Banasthali University, P.O. Banasthali Vidyapith, Rajasthan 304022 (India)

2014-07-07T23:59:59.000Z

310

Neutrino physics with an intense \  

E-Print Network [OSTI]

We study some of the physics potential of an intense $1\\,\\mathrm{MCi}$ $^{51}\\mathrm{Cr}$ source combined with the {\\sc Majorana Demonstrator} enriched germanium detector array. The {\\sc Demonstrator} will consist of detectors with ultra-low radioactive backgrounds and extremely low energy thresholds of~$\\sim 400\\,\\mathrm{eV}$. We show that it can improve the current limit on the neutrino magnetic dipole moment. We briefly discuss physics applications of the charged-current reaction of the $^{51}\\mathrm{Cr} neutrino with the $^{73}\\mathrm{Ge} isotope. Finally, we argue that the rate from a realistic, intense tritium source is below the detectable limit of even a tonne-scale HPGe experiment

R. Henning

2010-11-16T23:59:59.000Z

311

High-voltage nanosecond pulses in a low-pressure radio-frequency discharge  

Science Journals Connector (OSTI)

An influence of a high-voltage (3–17 kV) 20 ns pulse on a weakly-ionized low-pressure (0.1–10 Pa) capacitively coupled radiofrequency (RF) argon plasma is studied experimentally. The plasma evolution after pulse exhibits two characteristic regimes: a bright flash, occurring within 100 ns after the pulse (when the discharge emission increases by 2–3 orders of magnitude over the steady-state level), and a dark phase, lasting a few hundreds ?s (when the intensity of the discharge emission drops significantly below the steady-state level). The electron density increases during the flash and remains very large at the dark phase. 1D3V particle-in-cell simulations qualitatively reproduce both regimes and allow for detailed analysis of the underlying mechanisms. It is found that the high-voltage nanosecond pulse is capable of removing a significant fraction of plasma electrons out of the discharge gap, and that the flash is the result of the excitation of gas atoms, triggered by residual electrons accelerated in the electric field of immobile bulk ions. The secondary emission from the electrodes due to vacuum UV radiation plays an important role at this stage. High-density plasma generated during the flash provides efficient screening of the RF field (which sustains the steady-state plasma). This leads to the electron cooling and, hence, onset of the dark phase.

M. Y. Pustylnik; L. Hou; A. V. Ivlev; L. M. Vasilyak; L. Couëdel; H. M. Thomas; G. E. Morfill; V. E. Fortov

2013-06-10T23:59:59.000Z

312

Cleaning of inner vacuum surfaces in the Uragan-3M facility by radio-frequency discharges  

SciTech Connect (OSTI)

A method for cleaning vacuum surfaces by a low-temperature (T{sub e} ? 10 eV) relatively dense (n{sub e} ? 10{sup 12} cm{sup ?3}) plasma of an RF discharge was developed and successfully applied at the Uragan-3M torsatron. The convenience of the method is that it can be implemented with the same antenna system and RF generators that are used to produce and heat the plasma in the operating mode and does not require retuning the frequencies of the antennas and RF generators. The RF discharge has a high efficiency from the standpoint of cleaning vacuum surfaces. After performing a series of cleanings by the low-temperature RF discharge plasma (about 20000 pulses), (i) the intensity of the CIII impurity line was substantially reduced, (ii) a quasi-steady operating mode with a duration of up to 50 ms, a plasma density of n{sub e} ? 10{sup 12} cm{sup ?3}, and an electron temperature of up to T{sub e} ? 1 keV was achieved, and (iii) mass spectrometric analysis of the residual gas in the chamber indicated a significant reduction in the impurity content.

Lozin, A. V., E-mail: alexlozin@meta.ua; Moiseenko, V. E.; Grigor’eva, L. I.; Kozulya, M. M.; Kulaga, A. E. [National Science Center Kharkiv Institute of Physics and Technology (Ukraine)] [National Science Center Kharkiv Institute of Physics and Technology (Ukraine); Lysoivan, A. I. [Royal Military Academy, Laboratory for Plasma Physics (Belgium)] [Royal Military Academy, Laboratory for Plasma Physics (Belgium); Mironov, Yu. K.; Pavlichenko, R. O.; Romanov, V. S.; Chernyshenko, V. Ya.; Chechkin, V. V. [National Science Center Kharkiv Institute of Physics and Technology (Ukraine)] [National Science Center Kharkiv Institute of Physics and Technology (Ukraine); Collaboration: Uragan-3M Team

2013-08-15T23:59:59.000Z

313

The Potential Field in and around a Gas Discharge, and Its Influence on the Discharge Mechanism  

Science Journals Connector (OSTI)

In the first part of the paper, results on the spatial extension of cathode and anode fall regions in carbon arcs are reported. Potential-probe measurements reveal that the potential drop in front of either electrode is confined to less than one tenth of a millimeter. In the second part of the paper, the distortion of the potential field in and around any discharge, as caused by the non-uniform space charge distribution in the discharge, is discussed for the cases of a low current carbon arc and a negative point corona; for the latter case use was made of data by Loeb. The potential field distortions result in radial electric fields which, depending on their polarity, seem to hinder or support the radial expansion of the discharge. Potential-probe measurements in low and high current carbon arcs are in good agreement with this theoretical analysis and prove the transitional region between the distorted potential field in the arc and the undistorted potential field outside of the discharge to be a fairly thin one.

W. Finkelnburg and S. M. Segal

1951-08-01T23:59:59.000Z

314

DC Discharge Studies Using PIC-MCC: Unmagnetized Glow Discharge Theory Jeff Hammel & John Verboncoeur  

E-Print Network [OSTI]

in Gases. John Wiley and Sons, Inc., New York, 1939. · Yuri P. Raizer. Gas Discharge Physics. Springer-dimensional bounded plasma simulation codes. Journal of Computational Physics, 131:149-163, 1997. · John P bounded plasma simulation codes. Journal of Computational Physics, 104:321-328, 1993. · John P

Wurtele, Jonathan

315

Hydrothermal Heat Discharge In The Cascade Range, Northwestern United  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Hydrothermal Heat Discharge In The Cascade Range, Northwestern United States Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Hydrothermal Heat Discharge In The Cascade Range, Northwestern United States Details Activities (3) Areas (1) Regions (0) Abstract: Hydrothermal heat discharge in the Cascade Range includes the heat discharged by thermal springs, by "slightly thermal" springs that are only a few degrees warmer than ambient temperature, and by fumaroles. Thermal-spring heat discharge is calculated on the basis of chloride-flux measurements and geothermometer temperatures and totals ~ 240 MW in the U.S. part of the Cascade Range, excluding the transient post-1980 discharge

316

Point Source Discharges to Surface Waters (North Carolina) | Department of  

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

Point Source Discharges to Surface Waters (North Carolina) Point Source Discharges to Surface Waters (North Carolina) Point Source Discharges to Surface Waters (North Carolina) < Back Eligibility Commercial Industrial Construction Transportation Savings Category Buying & Making Electricity Program Info State North Carolina Program Type Siting and Permitting Provider Department of Environment and Natural Resources This rule requires permits for control of sources of water pollution by providing the requirements and procedures for application and issuance of state National Pollutant Discharge Elimination System (NPDES) permits for a discharge from an outlet, point source, or disposal system discharging to the surface waters of the state, and for the construction, entering a contract for construction, and operation of treatment works with such a

317

Notice of Intent (NOI) for Storm Water Discharges Associated with  

Open Energy Info (EERE)

Intent (NOI) for Storm Water Discharges Associated with Intent (NOI) for Storm Water Discharges Associated with Construction Activities under TPDES General Permit (TXR150000) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Reference Material: Notice of Intent (NOI) for Storm Water Discharges Associated with Construction Activities under TPDES General Permit (TXR150000) Details Activities (0) Areas (0) Regions (0) Abstract: Unavailable Author(s): Unknown Published: Texas Commission on Environmental Quality, Date Unknown Document Number: Unavailable DOI: Unavailable Source: View Original Document Retrieved from "http://en.openei.org/w/index.php?title=Notice_of_Intent_(NOI)_for_Storm_Water_Discharges_Associated_with_Construction_Activities_under_TPDES_General_Permit_(TXR150000)&oldid=598006"

318

Design of a high precision desktop wire electrical discharge machine.  

E-Print Network [OSTI]

??This thesis discusses the design of a wire electrical discharge machine that is small enough to be deemed a desktop machine that achieves sub micron… (more)

Dunlop, David James

2010-01-01T23:59:59.000Z

319

Cathode fall measurement in a dielectric barrier discharge in helium  

SciTech Connect (OSTI)

A method based on the “zero-length voltage” extrapolation is proposed to measure cathode fall in a dielectric barrier discharge. Starting, stable, and discharge-maintaining voltages were measured to obtain the extrapolation zero-length voltage. Under our experimental conditions, the “zero-length voltage” gave a cathode fall of about 185 V. Based on the known thickness of the cathode fall region, the spatial distribution of the electric field strength in dielectric barrier discharge in atmospheric helium is determined. The strong cathode fall with a maximum field value of approximately 9.25 kV/cm was typical for the glow mode of the discharge.

Hao, Yanpeng; Zheng, Bin; Liu, Yaoge [School of Electric Power, South China University of Technology, Guangzhou 510640 (China)] [School of Electric Power, South China University of Technology, Guangzhou 510640 (China)

2013-11-15T23:59:59.000Z

320

The effect of riverine discharge on biogeochemical processes in ...  

Science Journals Connector (OSTI)

A prolonged drought decreased river discharge, altered the salinity gradient in the estuary, and profoundly affected anaerobic respiratory processes in the ...

Note: This page contains sample records for the topic "intensity discharge lamps" 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

Fiber optic diagnostic techniques for the electrical discharge machining process.  

E-Print Network [OSTI]

??Plasma sparks from an electrical discharge machining phics. (EDM) process were observed using fiber optics positioned the dielectric oil. New measurement techniques were developed to… (more)

Pillans, Brandon William

2012-01-01T23:59:59.000Z

322

Contact glow discharge electrolysis for liquid waste processing  

E-Print Network [OSTI]

for an alka- line water electrolysis at a small pin verticaldischarge electrolysis applied to waste water treatment.water treatment induced by plasma with contact glow discharge electrolysis.

Sharma, Neeraj

2014-01-01T23:59:59.000Z

323

WAC - 173 - 221A - Wastewater Discharge Standards and Effluent...  

Open Energy Info (EERE)

Wastewater Discharge Standards and Effluent Limitations Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- RegulationRegulation: WAC - 173 - 221A -...

324

WAC - 173 - 221 - Discharge Standards and Effluent Limitations...  

Open Energy Info (EERE)

WAC - 173 - 221 - Discharge Standards and Effluent Limitations for Domestic Wastewater Facilities Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document-...

325

File:CDPHE Industrial Individual Wastewater Discharge Permit...  

Open Energy Info (EERE)

Industrial Individual Wastewater Discharge Permit Application.pdf Jump to: navigation, search File File history File usage Metadata File:CDPHE Industrial Individual Wastewater...

326

EPA - Ground Water Discharges (EPA's Underground Injection Control...  

Open Energy Info (EERE)

EPA - Ground Water Discharges (EPA's Underground Injection Control Program) webpage Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: EPA - Ground Water...

327

Nonlocal collisionless power absorption using effective viscosity model in inductively coupled plasma discharges  

SciTech Connect (OSTI)

Effective viscosity model for inductively coupled plasma (ICP) discharges has been used to calculate the power absorbed inside ICP discharges. It is found that it can be used to calculate collisionless heating, which is a warm plasma effect. The validity of effective viscosity model has been checked by comparing it with kinetic model for warm ICP discharges. For very small plasma lengths, the results of both models are the same. At intermediate lengths where bounce resonance heating is important, results of the two models are not the same. Bounce resonance length given by effective viscosity model does not match very well with that given by the kinetic model. It shows that bounce resonance heating cannot be taken care of accurately using the effective viscosity model. For large plasma length, when driving frequencies are low, power absorbed calculated using the kinetic model is more than that calculated by the effective viscosity model. For high driving frequencies, power absorbed calculated using the kinetic model is less than that calculated by the effective viscosity model. The best match between the results of two models (for large plasma length) is obtained if the combination of plasma density, electron temperature, driving frequency, and speed of light is such that the relation K={omega}{sub p}v{sub th}/{omega}c{approx_equal}1 holds. It is concluded that computationally less extensive effective viscosity model can be used to estimate power absorption in ICP discharges by calibrating it with the help of computationally intensive kinetic model. Once calibration is done a lot of computational effort can be avoided by using effective viscosity model instead of kinetic model.

Aman-ur-Rehman, [Pakistan Institute of Engineering and Applied Sciences, P.O. Nilore, Islamabad 45650 (Pakistan); Lee, J. K. [Department of Electronic and Electrical Engineering, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of)

2009-07-15T23:59:59.000Z

328

Deposition of vertically oriented carbon nanofibers in atmospheric pressure radio frequency discharge  

SciTech Connect (OSTI)

Deposition of vertically oriented carbon nanofibers (CNFs) has been studied in an atmospheric pressure radio frequency discharge without dielectric barrier covering the metallic electrodes. When the frequency is sufficiently high so that ions reside in the gap for more than one rf cycle ('trapped ions'), the operating voltage decreases remarkably and the transition from a uniform glow discharge to an arc discharge is suppressed even without dielectric barriers. More importantly, the trapped ions are able to build up a cathodic ion sheath. A large potential drop is created in the sheath between the bulk plasma and the electrode, which is essential for aligning growing CNFs. At the same time, the damage to CNFs due to ion bombardment can be minimized at atmospheric pressure. The primary interest of the present work is in identifying the cathodic ion sheath and investigating how it influences the alignment of growing CNFs in atmospheric pressure plasma-enhanced chemical-vapor deposition. Spectral emission profiles of He (706 nm), H{alpha} (656 nm), and CH (432 nm) clearly showed that a dark space is formed between the cathode layer and the heated bottom electrode. However, increasing the rf power induced the transition to a nonuniform {gamma}-mode discharge which creates intense plasma spots in the dark space. Aligned CNFs can be grown at moderate input power during the initial stage of the deposition process. Catalyst particles were heavily contaminated by precipitated carbon in less than 5 min. Alignment deteriorates as CNFs grow and deposition was virtually terminated by the deactivation of catalyst particles.

Nozaki, Tomohiro; Goto, Tomoya; Okazaki, Ken; Ohnishi, Kuma; Mangolini, Lorenzo; Heberlein, Joachim; Kortshagen, Uwe [Department of Mechanical and Control Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro Tokyo 1528552 (Japan); Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

2006-01-15T23:59:59.000Z

329

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

330

Handbook of Pediatric Intensive Care  

Science Journals Connector (OSTI)

...objectionable, but I found that it streamlined the text. This handbook is useful in at least two ways. First, it can serve as a mini-textbook on pediatric intensive care. It is not meant to be a substitute for any of the major works in the field, but it does provide enough information for the reader to gain more... In caring for critically ill children, the demands on one's time are great, and there is often little time left for reading. Although there are a number of excellent, comprehensive books on pediatric critical care that must be read by those in the field, ...

Trager J.D.K.

1996-01-25T23:59:59.000Z

331

Energy parameters and stability of the discharge in a nonchain, self-sustained-discharge-pumped HF laser  

SciTech Connect (OSTI)

The generation and discharge are studied in a nonchain HF laser operating on mixtures of SF{sub 6} with hydrogen and hydrocarbons. The specific output energy of the laser is 8.8 J L{sup -1} (73 J L{sup -1} atm{sup -1}) and the total lasing efficiency is 5.5%. It is shown that the formation and maintaining of a volume discharge in self-sustained-discharge-pumped HF lasers with a large content of electronegative gases is caused by the accumulation of the volume discharge of negative ions in conducting regions. (letters)

Tarasenko, Viktor F; Orlovskii, Viktor M; Panchenko, Aleksei N [Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences, Tomsk (Russian Federation)

2001-12-31T23:59:59.000Z

332

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

333

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

334

Effect of temperature and arc discharge on friction and wear behaviours of carbon strip/copper contact wire in pantograph–catenary systems  

Science Journals Connector (OSTI)

A series of tests on friction and wear performance of pure copper rubbing against carbon strip under electric current have been carried out on a modified pin-on-disc friction and wear tester. The results indicate that there are temperature rise and arc discharge in the electrical sliding processes. The temperature rise of contact pairs and the intensity of arc discharge increase with the increasing of electric current. However, the friction coefficient increases firstly due to the accumulation of wear debris, and then decreases with the increasing of electric current due to the accumulation of electric heat and friction heat on contact interface. The increase in wear volume of the carbon strip is mainly caused by high temperature of contact pairs and arc discharge phenomenon. The test results also show that the wear volume of pin specimen with arc discharge is much greater than that without arc discharge under the same temperature. Therefore, the thermal wear due to high temperature has a distinct influence on the service life of pantograph contact strip and arc erosion even has more significant influence. Cooling measures should be applied in pantograph/catenary systems. Especially, off-line arc discharge of the contact couple should be suppressed to the maximum extent to extend the service life of pantograph contact strip.

T. Ding; G.X. Chen; J. Bu; W.H. Zhang

2011-01-01T23:59:59.000Z

335

State Waste Discharge Permit application for industrial discharge to land: 200 East Area W-252 streams  

SciTech Connect (OSTI)

This document constitutes the WAC 173-216 State Waste Discharge Permit application for six W-252 liquid effluent streams at the Hanford Site. Appendices B through H correspond to Section B through H in the permit application form. Within each appendix, sections correspond directly to the respective questions on the application form. The appendices include: Product or service information; Plant operational characteristics; Water consumption and waterloss; Wastewater information; Stormwater; Other information; and Site assessment.

Not Available

1993-12-01T23:59:59.000Z

336

Noise-based wavelet denoising technique for partial discharge measurement  

Science Journals Connector (OSTI)

For enhancement the insulation quality of medium voltage and high voltage power cables, on-site partial discharge (PD) diagnosis tests such as detection, location and identification are used to find defects or faults and assess ageing degree of the cable ... Keywords: discrete wavelet transform, frequency-tuned resonance, oscilating voltage wave, partial discharge, power cables, very low frequency

Zhou-Sheng Zhang; Deng-Ming Xiao

2008-06-01T23:59:59.000Z

337

Pinch spot formation in high atomic number z discharges  

Science Journals Connector (OSTI)

A nonlinear, quasi-two-dimensional model for pinch spot formation in radiation-dominated, high atomic number z pinches is presented that reproduces the experimental electrical and radiation characteristics. The high line-radiation rates of such discharges produce localized, high-density pinch spots in contrast to the spindle pinches predicted for hydrogenic discharges.

D. Mosher and D. Colombant

1992-04-27T23:59:59.000Z

338

Decomposition of Naphthalene by dc Gliding Arc Gas Discharge  

Science Journals Connector (OSTI)

Decomposition of Naphthalene by dc Gliding Arc Gas Discharge ... In the air and oxygen gliding arc discharges, the naphthalene degradation is mainly governed by reactions with oxygen-derived radicals. ... Therefore, the local electric field strength is relatively low in argon gliding arc plasma. ...

Liang Yu; Xiaodong Li; Xin Tu; Yu Wang; Shengyong Lu; Jianhua Yan

2009-12-11T23:59:59.000Z

339

Relationships among probability distributions of stream discharges in floods, climate,  

E-Print Network [OSTI]

Relationships among probability distributions of stream discharges in floods, climate, bed load of both follow power laws. The number N(Q) of days on which the discharge exceeds Q, or the number of the United States. To examine the effect of climate change on bed load transport and river incision, we

Mojzsis, Stephen J.

340

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.

Note: This page contains sample records for the topic "intensity discharge lamps" 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

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

342

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

343

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

344

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

345

Waste not Discharged to Surface Waters (North Carolina) | Department of  

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

Waste not Discharged to Surface Waters (North Carolina) Waste not Discharged to Surface Waters (North Carolina) Waste not Discharged to Surface Waters (North Carolina) < Back Eligibility Commercial Industrial Construction Transportation Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State North Carolina Program Type Siting and Permitting The rules in this Subchapter apply to all persons proposing to construct, alter, extend, or operate any sewer system, treatment works, disposal system, contaminates soil treatment system, animal waste management system, stormwater management system or residual disposal/utilization system which does not discharge to surface waters of the state, including systems which discharge waste onto or below land surface.

346

LANL achieves milestone on path to zero wastewater discharge  

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

LANL achieves milestone on wastewater discharge LANL achieves milestone on wastewater discharge LANL achieves milestone on path to zero wastewater discharge Industrial wastewater will be recycled as the result of a long-term strategy to treat wastewater rather than discharging it into the environment. January 20, 2012 Aerial view of Los Alamos National Laboratory Aerial view of Los Alamos National Laboratory. Contact Colleen Curran Communications Office (505) 664-0344 Email Improved compliance while recycling millions of gallons of industrial wastewater LOS ALAMOS, New Mexico, January 20, 2012-Millions of gallons of industrial wastewater will be recycled at Los Alamos National Laboratory as the result of a long-term strategy to treat wastewater rather than discharging it into the environment. The U. S. Environmental Protection Agency, which issues permits for

347

Radio frequency discharge with control of plasma potential distribution  

SciTech Connect (OSTI)

A RF discharge plasma generator with additional electrodes for independent control of plasma potential distribution is proposed. With positive biasing of this ring electrode relative end flanges and longitudinal magnetic field a confinement of fast electrons in the discharge will be improved for reliable triggering of pulsed RF discharge at low gas density and rate of ion generation will be enhanced. In the proposed discharge combination, the electron energy is enhanced by RF field and the fast electron confinement is improved by enhanced positive plasma potential which improves the efficiency of plasma generation significantly. This combination creates a synergetic effect with a significantly improving the plasma generation performance at low gas density. The discharge parameters can be optimized for enhance plasma generation with acceptable electrode sputtering.

Dudnikov, Vadim [Muons, Inc., Batavia, Illinois 60510 (United States); Dudnikov, A. [BINP, Novosibirsk 63090 (Russian Federation)

2012-02-15T23:59:59.000Z

348

State Waste Discharge Permit application: 200-E Powerhouse Ash Pit  

SciTech Connect (OSTI)

As part of the Hanford Federal Facility Agreement and Consent Order negotiations, the US Department and Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect groundwater would be subject to permitting under the structure of Chapter 173-216 (or 173-218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. This document constitutes the State Waste Discharge Permit application for the 200-E Powerhouse Ash Pit. The 200-E Powerhouse Ash Waste Water discharges to the 200-E Powerhouse Ash Pit via dedicated pipelines. The 200-E Ash Waste Water is the only discharge to the 200-E Powerhouse Ash Pit. The 200-E Powerhouse is a steam generation facility consisting of a coal-handling and preparation section and boilers.

Atencio, B.P.

1994-06-01T23:59:59.000Z

349

State Waste Discharge Permit application: 200-W Powerhouse Ash Pit  

SciTech Connect (OSTI)

As part of the Hanford Federal Facility Agreement and Consent Order negotiations; the US Department of Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect groundwater would be subject to permitting under the structure of Chapter 173-216 (or 173-218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. This document constitutes the State Waste Discharge Permit application for the 200-W Powerhouse Ash Pit. The 200-W Powerhouse Ash Waste Water discharges to the 200-W Powerhouse Ash Pit via dedicated pipelines. The 200-W Powerhouse Ash Waste Water is the only discharge to the 200-W Powerhouse Ash Pit. The 200-W Powerhouse is a steam generation facility consisting of a coal-handling and preparation section and boilers.

Atencio, B.P.

1994-06-01T23:59:59.000Z

350

Iron and Steel Energy Intensities  

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

If you are having trouble, call 202-586-8800 for help. Home > >Energy Users > Energy Efficiency Page > Iron and Steel Energy Intensities First Use of Energy Blue Bullet First Use/Value of Production Blue Bullet First Use/Ton of steel End Uses of Consumption Blue Bullet Total End Use/Value of Production Blue Bullet Total End Use/Ton of Steel Boiler Fuel as End Use Blue Bullet Boiler Fuel /Value of Production Blue Bullet Boiler Fuel /Ton of Steel Process Heating as End Use Blue Bullet Process Heating Fuel /Ton of Steel Blue Bullet Process Heating /Value of Production Machine Drive as End Use Blue Bullet Machine Drive Fuel/Ton of Steel Blue Bullet Machine Drive Fuel /Value of Production Expenditures Blue Bullet Purchased Fuel /Ton of Steel Blue Bullet Purchased Fuel /Value of Production

351

Energy Intensity Baselining and Tracking Guidance  

Broader source: Energy.gov [DOE]

The Energy Intensity Baselining and Tracking Guidance for the Better Buildings, Better Plants Program helps companies meet the program’s reporting requirements by describing the steps necessary to develop an energy consumption and energy intensity baseline and calculating consumption and intensity changes over time.

352

Plasma parameters of pulsed-dc discharges in methane used to deposit diamondlike carbon films  

SciTech Connect (OSTI)

Here we approximate the plasma kinetics responsible for diamondlike carbon (DLC) depositions that result from pulsed-dc discharges. The DLC films were deposited at room temperature by plasma-enhanced chemical vapor deposition (PECVD) in a methane (CH{sub 4}) atmosphere at 10 Pa. We compared the plasma characteristics of asymmetric bipolar pulsed-dc discharges at 100 kHz to those produced by a radio frequency (rf) source. The electrical discharges were monitored by a computer-controlled Langmuir probe operating in time-resolved mode. The acquisition system provided the intensity-voltage (I-V) characteristics with a time resolution of 1 mus. This facilitated the discussion of the variation in plasma parameters within a pulse cycle as a function of the pulse waveform and the peak voltage. The electron distribution was clearly divided into high- and low-energy Maxwellian populations of electrons (a bi-Maxwellian population) at the beginning of the negative voltage region of the pulse. We ascribe this to intense stochastic heating due to the rapid advancing of the sheath edge. The hot population had an electron temperature T{sub e}{sup hot} of over 10 eV and an initial low density n{sub e}{sup hot} which decreased to zero. Cold electrons of temperature T{sub e}{sup cold}approx1 eV represented the majority of each discharge. The density of cold electrons n{sub e}{sup cold} showed a monotonic increase over time within the negative pulse, peaking at almost 7x10{sup 10} cm{sup -3}, corresponding to the cooling of the hot electrons. The plasma potential V{sub p} of approx30 V underwent a smooth increase during the pulse and fell at the end of the negative region. Different rates of CH{sub 4} conversion were calculated from the DLC deposition rate. These were explained in terms of the specific activation energy E{sub a} and the conversion factor x{sub dep} associated with the plasma processes. The work deepens our understanding of the advantages of using pulsed power supplies for the PECVD of hard metallic and protective coatings for industrial applications (optics, biomedicine, and electronics).

Corbella, C.; Rubio-Roy, M.; Bertran, E.; Andujar, J. L. [FEMAN Group, IN2UB, Departament de Fisica Aplicada i Optica, Universitat de Barcelona, c/Marti i Franques 1, E-08028 Barcelona (Spain)

2009-08-01T23:59:59.000Z

353

Cost–benefit analysis of retrofit of high-intensity discharge factory lighting with energy-saving alternatives  

Science Journals Connector (OSTI)

The average labor costs for an electrician and an electrician’s helper were taken from the 2010 MEANS Electrical Cost Data handbook. These costs were given as $49.00/h for an electrician and $31.60/h for an electrician

Daniel J. Preston; Keith A. Woodbury

2013-05-01T23:59:59.000Z

354

A System-Level Electrostatic-Discharge-Protection Modeling Methodology for Time-  

E-Print Network [OSTI]

A System-Level Electrostatic-Discharge- Protection Modeling Methodology for Time- Domain Analysis. Index Terms--Electromagnetic compatibility (EMC), electrostatic discharge (ESD), modeling, system level precise simulations of electrostatic discharge (ESD) stress propagation on a printed circuit board (PCB

Boyer, Edmond

355

Wastewater Regulations for National Pollutant Discharge Elimination System  

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

Wastewater Regulations for National Pollutant Discharge Elimination Wastewater Regulations for National Pollutant Discharge Elimination System (NPDES) Permits, Underground Injection Control (UIC) Permits, State Permits, Water Quality Based Effluent Limitations and Water Quality Certification (Mississippi) Wastewater Regulations for National Pollutant Discharge Elimination System (NPDES) Permits, Underground Injection Control (UIC) Permits, State Permits, Water Quality Based Effluent Limitations and Water Quality Certification (Mississippi) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential

356

Experimental Investigation Of Atmospheric Pressure Surface Wave Discharges  

SciTech Connect (OSTI)

Microwave atmospheric pressure discharge in neon sustained by surface waves in a dielectric tube is considered. The plasma column length was measured versus absorbed microwave power for different discharge conditions. This gives a view on the wave propagation characteristics. The predicted dependence of discharge length on the total flux of wave power based on the modified model of non-equilibrium plasma is compared with experimental values. Moreover, we present results of spectroscopic investigations of the electron density. The electron density was determined using the method based on the Stark broadening of H{beta} spectral line. The spectroscopic results we shall use developing of a model of propagation of surface wave.

Czylkowski, D.; Jasinski, M.; Nowakowska, H.; Zakrzewski, Z. [The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-231 Gdansk (Poland)

2006-01-15T23:59:59.000Z

357

Electrohydraulic Discharge and Nonthermal Plasma for Water Treatment  

Science Journals Connector (OSTI)

The corona or corona-like system uses discharges of ?1 J/pulse, whereas the pulsed arc discharge uses energy of ?1 kJ/pulse and larger. ... AC, DC, and pulsed electric fields have been applied in conditions where the electrodes have been fully immersed in the liquid phase, where one electrode has been placed in an adjacent gas phase, and/or where arcing across the electrodes may occur. ... The electrohydraulic shock treatment of microorganisms was accomplished by discharging high-voltage electricity (8 to 15 kv.) across an electrode gap below the surface of aq. ...

B. R. Locke; M. Sato; P. Sunka; M. R. Hoffmann; J.-S. Chang

2005-12-31T23:59:59.000Z

358

Shoreline survey for unpermitted discharges to Galveston Bay  

SciTech Connect (OSTI)

The objectives of the study are to identify and map unpermitted point source discharges within selected shoreline segments of Galveston Bay and to develop a standard methodology and framework for future comprehensive shoreline surveys of the Galveston Bay system. The pilot study utilized low altitude aerial surveys and shallow draft small boat surveys to determine the extent of and to document locations of unpermitted discharges along 159 miles of bayou and bay shoreline. Nine different shoreline types were surveyed. Positions of discharges, both permitted and unpermitted were logged on to a personal computer data base management system and photographic documentation of both aerial and surface observations were catalogued.

Fay, R.R.; Sweet, S.; Wilson, R.J.

1991-08-01T23:59:59.000Z

359

Storm Water Discharge Permits (Wisconsin) | Department of Energy  

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

Storm Water Discharge Permits (Wisconsin) Storm Water Discharge Permits (Wisconsin) Storm Water Discharge Permits (Wisconsin) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info Start Date 08/2004 State Wisconsin Program Type Siting and Permitting Provider Department of Natural Resources Wisconsin's storm water runoff regulations include permitting requirements for construction sites and industrial facilities, including those

360

E-Print Network 3.0 - active liquid discharges Sample Search...  

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

discharge in synthetic air... Online at stacks.iop.orgJPhysD41035212 Abstract The barrier discharge in the coplanar ... Source: Greifswald, Ernst-Moritz-Arndt-Universitt...

Note: This page contains sample records for the topic "intensity discharge lamps" 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

Permit Program Regulating Discharge of Nondomestic Wastewater into a POTW (Ohio)  

Broader source: Energy.gov [DOE]

Any significant industrial user is required to apply for and obtain an individual indirect discharge permit if they discharge water or waste into a publicly owned treatment works.

362

Electric-discharge intensification of the wool scouring process  

Science Journals Connector (OSTI)

The results of experiments on wool washing by high-voltage electric discharge in a liquid are presented. The efficiency of this method of washing is shown. The process of washing is considerably accelerated at...

A. A. Zubenko

2008-06-01T23:59:59.000Z

363

Plasma Grooving System Using Atmospheric Pressure Surface Discharge Plasma  

Science Journals Connector (OSTI)

To fabricate narrow front contact grooves on a single crystalline silicon solar cell, we carried out etching of a silicon nitride film on a silicon substrate using the surface discharge plasma operated at atmospheric

Toshiyuki Hamada; Tatsuya Sakoda; Masahisa Otsubo

2009-06-01T23:59:59.000Z

364

Radio-frequency glow discharge spectrometry:: A critical review  

Science Journals Connector (OSTI)

This paper presents a critical review of analytical radio frequency glow discharge spectrometry (rf-GDS). The historical foundations of rf-GDS are described, and current knowledge of the fundamental physics of analytical rf glow discharges is discussed. Additionally, instrumentation, methodologies, and applications of rf glow discharge optical emission spectrometry (rf-GDOES) and mass spectrometry (rf-GDMS) are reviewed. Although other rf-GDS techniques have appeared [e.g. rf glow discharge atomic absorption spectrophotometry (rf-GDAAS)], the emphasis is placed upon rf-GDOES and rf-GDMS, because they have received by far the most interest from analytical chemical metrologists. This review also provides explanations of some developments that are needed for further progress in the field of analytical rf-GDS.

Michael R. Winchester; Richard Payling

2004-01-01T23:59:59.000Z

365

Plasma of Electric Arc Discharge between Melted Electrodes  

Science Journals Connector (OSTI)

Plasma of electric arc discharge between melted electrodes was experimentally investigated. Diagnostics of electric arc plasma was carried out. Optical emission and ... in plasma tends to be located at the arc ax...

A.N. Veklich; I.L. Babich

2001-01-01T23:59:59.000Z

366

Problems of physical modeling of electric-arc discharges  

Science Journals Connector (OSTI)

Special features of physical modeling of high-current arc discharges are considered. It is shown that the employment of dimensionless criterial expressions makes it possible to establish only approximate simil...

O. I. Yas'ko

367

Effect of electric arc discharge on hypersonic blunt body drag  

Science Journals Connector (OSTI)

Experimental results on the effect of energy deposition using an electric arc discharge, upstream of a 60°...half angle blunt cone configuration in a hypersonic flow is reported.Investigations involving drag meas...

K. Satheesh; G. Jagadeesh

2009-01-01T23:59:59.000Z

368

Spectral properties of a diffuse-constricted arc discharge  

Science Journals Connector (OSTI)

An extensive high-current electric discharge under atmospheric pressure is characterized by considerable instability, unless special measures for its stabilization are assumed (e.g., by the walls, electrodes, ...

V. O. German; A. P. Glinov; P. V. Kozlov; G. A. Lyubimov

2012-04-01T23:59:59.000Z

369

Velocity of the electric arc in a plasmatron discharge chamber  

Science Journals Connector (OSTI)

An experimental investigation of the velocity of a high-current arc with air injection in the discharge chamber of a coaxial sectioned plasmatron is described. The experiments showed that the velocity of the c...

A. S. Shaboltas

1969-09-01T23:59:59.000Z

370

CO2-laser gas discharges in narrow gaps  

Science Journals Connector (OSTI)

We have studied RF discharges as excitation mechanisms for distributed feedback (DFB) CO2 lasers. For CO2 laser plasmas the reduced electric fieldE/N has to be in a well-defined range. The reduced electric fields

W. Leuthard; F. K. Kneubühl; H. J. Schötzau

1989-01-01T23:59:59.000Z

371

Discharging a DC bus capacitor of an electrical converter system  

DOE Patents [OSTI]

A system and method of discharging a bus capacitor of a bidirectional matrix converter of a vehicle are presented here. The method begins by electrically shorting the AC interface of the converter after an AC energy source is disconnected from the AC interface. The method continues by arranging a plurality of switching elements of a second energy conversion module into a discharge configuration to establish an electrical current path from a first terminal of an isolation module, through an inductive element, and to a second terminal of the isolation module. The method also modulates a plurality of switching elements of a first energy conversion module, while maintaining the discharge configuration of the second energy conversion module, to at least partially discharge a DC bus capacitor.

Kajouke, Lateef A; Perisic, Milun; Ransom, Ray M

2014-10-14T23:59:59.000Z

372

Process characterization of Electrical Discharge Machining of highly doped silicon  

E-Print Network [OSTI]

Electrical Discharge Machining (EDM) is an advanced machining process that removes material via thermal erosion through a plasma arc. The machining process is accomplished through the application of high frequency current ...

Crawford, Gregory Allan

2012-01-01T23:59:59.000Z

373

WAC - 173 - 226 - Waste Discharge General Permit Program | Open...  

Open Energy Info (EERE)

Reference LibraryAdd to library Legal Document- RegulationRegulation: WAC - 173 - 226 - Waste Discharge General Permit ProgramLegal Published NA Year Signed or Took Effect 2002...

374

An ultra miniature pinch-focus discharge Leopoldo Soto1  

E-Print Network [OSTI]

Abstract As a way to investigate the minimum energy to produce a pinch plasma focus discharge, an ultra optimized plasma foci. It is interesting note that plasma parameters practically constant in plasma focus

Paris-Sud XI, Université de

375

A forevacuum pulse arc-discharge-based plasma electron source  

Science Journals Connector (OSTI)

An arc-discharge-based electron source is described, which is designed for forming a pulsed wideaperture electron beam in the forevacuum pressure range (4...2 in the submillisecond range of pulse durations. The c...

A. V. Kazakov; V. A. Burdovitsin; A. V. Medovnik…

2013-11-01T23:59:59.000Z

376

Characteristics of discharge disruptions in the T-10 tokamak  

Science Journals Connector (OSTI)

The results of experimental studies of discharge disruptions in the T-10 tokamak at the limiting plasma density are presented. On the basis of measurements of the generated soft X-ray emission, for a group of ...

A. M. Stefanovskii; M. M. Dremin; A. M. Kakurin; A. Ya. Kislov…

2013-06-01T23:59:59.000Z

377

DRIFT INSTABILITIES IN CYLINDRICAL DISCHARGES INVOLVING BOTH IONS AND ELECTRONS  

Science Journals Connector (OSTI)

...by the end-plates. This would be an effective means for generating thermonuclear fusion, provided the gas used in the central arc discharge is capable of thermonuclear fusion. When operated with the cylinder open-circuited, the efficiency...

Joseph Slepian

1964-01-01T23:59:59.000Z

378

Long-pulse arc-discharge plasma source with cold cathode for diagnostic neutral beam injector  

SciTech Connect (OSTI)

Long-pulse cold cathode arc-discharge plasma generators have been successfully used as high-quality hydrogen ion sources for plasma diagnostic neutral beams. One of the main advantages of this type of plasma source is a high proton fraction (80%-90%). However, the lifetime of the plasma source is limited due to intensive electrode's erosion, especially at the cathode region. An optimized design of the cathode and the nearest electrodes is found which reduces the erosion and allows us to increase the pulse length. The plasma source produces the extracted ion current up to 3 A at a low angular divergence, and at the pulse duration up to 2 s.

Deichuli, P. P.; Ivanov, A. A.; Stupishin, N. V. [Budker Institute of Nuclear Physics, Novosibirsk 630090 (Russian Federation)

2008-02-15T23:59:59.000Z

379

Propagation of an optical discharge through optical fibres upon interference of modes  

SciTech Connect (OSTI)

The propagation of an optical discharge (OD) through optical fibres upon interference of LP{sub 01} and LP{sub 02} modes is studied. Under these conditions after the OD propagation through the fibre, the formation of an axially-symmetric group sequence of voids with a spatial period equal to that of mode interference (200-500 {mu}m depending on the parameters of the fibre) is observed. The groups of voids are formed near the sections of the fibre with a minimal diameter of the intensity distribution of laser radiation. Large spaces between voids in the fibre have allowed us to measure accurately the difference {Delta}n of refractive indices of the fibre core and cladding and distribution of dopants in different cross sections of the fibre after the OD propagation. A substantial increase in {Delta}n (up to ten times) is observed. Approximately half this increase is caused by compression and densification of the fibre material after the propagation of the optical discharge. (interaction of laser radiation with matter. laser plasma)

Bufetov, I A; Frolov, A A; Shubin, A V; Likhachev, M E; Lavrishchev, S V; Dianov, E M [Fiber Optics Research Center, Russian Academy of Sciences, Moscow (Russian Federation)

2008-05-31T23:59:59.000Z

380

Energy Intensity Baselining and Tracking Guidance  

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

Learn more at betterbuildings.energy.gov Energy Intensity Baselining and Tracking Guidance i Preface The U.S. Department of Energy's (DOE) Better Buildings, Better Plants Program...

Note: This page contains sample records for the topic "intensity discharge lamps" 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

Fiber optic diagnostic techniques for the electrical discharge machining process  

E-Print Network [OSTI]

FIBER OPTIC DIAGNOSTIC TECHNIQUES FOR THE ELECTRICAL DISCHARGE MACHINING PROCESS A Thesis by BRANDON WILLIAM PILLANS Submitted to the Office of Graduate Studies of Texas AB M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August t 998 Major Subject: Electrical Engineering FIBER OPTIC DIAGNOSTIC TECHNIQUES FOR THE ELECTRICAL DISCHARGE MACHINING PROCESS A Thesis by BRANDON WILLIAM PILLANS Submitted to Texas A8M University in partial...

Pillans, Brandon William

2012-06-07T23:59:59.000Z

382

Experimental Study on Gasoline Reforming Assisted by Nonthermal Arc Discharge  

Science Journals Connector (OSTI)

The gasoline conversion efficiency decreased when the electric discharge regime was changing from continuous to gliding arc and from gliding to streamer. ... Compared with catalytic reformers, plasma devices have so far lower performances, which is explained by the early stage of research on nonthermal plasma reforming and the need of an external energy input (electricity). ... and design of the plasma reactor, composed of two gliding arc discharges in series, were detailed. ...

Jean-Damien Rollier; José Gonzalez-Aguilar; Guillaume Petitpas; Adeline Darmon; Laurent Fulcheri; Rudolf Metkemeijer

2007-12-06T23:59:59.000Z

383

World Best Practice Energy Intensity Values for Selected Industrial Sectors  

E-Print Network [OSTI]

world best practice energy intensity values for productionWorld best practice energy intensity values for productionWorld Best Practice Final Energy Intensity Values for Aluminium Production (

Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

2007-01-01T23:59:59.000Z

384

World Best Practice Energy Intensity Values for Selected Industrial Sectors  

E-Print Network [OSTI]

Best Practice Final Energy Intensity Values for Stand-AloneBest Practice Final Energy Intensity Values for Stand-AloneBest Practice Primary Energy Intensity Values for Stand-

Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

2007-01-01T23:59:59.000Z

385

Drilling Waste Management Fact Sheet: Discharge to Ocean  

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

Discharge to Ocean Discharge to Ocean Fact Sheet - Discharge to Ocean Past Practices In early offshore oil and gas development, drilling wastes were generally discharged from the platforms directly to the ocean. Until several decades ago, the oceans were perceived to be limitless dumping grounds. During the 1970s and 1980s, however, evidence mounted that some types of drilling waste discharges could have undesirable effects on local ecology, particularly in shallow water. When water-based muds (WBMs) were used, only limited environmental harm was likely to occur, but when operators employed oil-based muds (OBMs) on deeper sections of wells, the resulting cuttings piles created impaired zones beneath and adjacent to the platforms. At some North Sea locations, large piles of oil-based cuttings remain on the sea floor near the platforms. Piles of oil-based cuttings can affect the local ecosystem in three ways: by smothering organisms, by direct toxic effect of the drilling waste, and by anoxic conditions caused by microbial degradation of the organic components in the waste. Current regulatory controls minimize the impacts of permitted discharges of cuttings.

386

Improved plasma uniformity in a discharge system with electron injection  

SciTech Connect (OSTI)

We present the results of experiments leading to improvement in bulk plasma uniformity of a constricted-arc discharge system with electron injection. The steady-state discharge was in argon, at a gas pressure of 0.5 mTorr, and operated with a main discharge voltage between 20 and 100 V and current between 3 and 15 A. The radial plasma distribution was measured with a movable Langmuir probe. We find that geometric modification of the intermediate electrode exit aperture and the main discharge cathode add little to the plasma uniformity. Improved bulk plasma uniformity is observed when a special distributing grid electrode is used and the main discharge voltage is less than 20-30 V. The application of a weakly divergent magnetic field in the region of the intermediate electrode exit aperture decreases the plasma nonuniformity from 20% to 14% over a radial distance of 30 cm. The plasma uniformity was further improved by compensating the magnetic self-field of the injected electron beam by a reverse magnetic field produced with a special electrode compensator. It is shown that an increase in discharge current causes a proportional increase in back current in the distributing electrode. The approach allows a decrease in plasma nonuniformity from 20% to 13% over a radial distance of 30 cm.

Vizir, A. V.; Tyunkov, A. V.; Shandrikov, M. V. [Institute of High Current Electronics, Siberian Division, Russian Academy Science, Tomsk 634055 (Russian Federation)

2009-02-15T23:59:59.000Z

387

Interaction of a surface glow discharge with a gas flow  

SciTech Connect (OSTI)

A surface glow discharge in a gas flow is of particular interest as a possible tool for controlling the flow past hypersonic aircrafts. Using a hydrodynamic model of glow discharge, two-dimensional calculations for a kilovolt surface discharge in nitrogen at a pressure of 0.5 Torr are carried out in a stationary gas, as well as in a flow with a velocity of 1000 m/s. The discharge structure and plasma parameters are investigated near a charged electrode. It is shown that the electron energy in a cathode layer reaches 250-300 eV. Discharge is sustained by secondary electron emission. The influence of a high-speed gas flow on the discharge is considered. It is shown that the cathode layer configuration is flow-resistant. The distributions of the electric field and electron energy, as well as the ionization rate profile in the cathode layer, do not change qualitatively under the action of the flow. The basic effect of the flow's influence is a sharp decrease in the region of the quasineutral plasma surrounding the cathode layer due to fast convective transport of ions.

Aleksandrov, A. L., E-mail: a_alex@itam.nsc.ru; Schweigert, I. V. [Russian Academy of Sciences, Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch (Russian Federation)

2010-05-15T23:59:59.000Z

388

State waste discharge permit application, 200-E chemical drain field  

SciTech Connect (OSTI)

As part of the Hanford Federal Facility Agreement and Consent Order negotiations (Ecology et al. 1994), the US Department of Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect ground would be subject to permitting under the structure of Chapter 173-216 (or 173-218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. As a result of this decision, the Washington State Department of Ecology and the US Department of Energy, Richland Operations Office entered into Consent Order No. DE 91NM-177, (Ecology and DOE-RL 1991). The Consent Order No. DE 91NM-177 requires a series of permitting activities for liquid effluent discharges. This document presents the State Waste Discharge Permit (SWDP) application for the 200-E Chemical Drain Field. Waste water from the 272-E Building enters the process sewer line directly through a floor drain, while waste water from the 2703-E Building is collected in two floor drains, (north and south) that act as sumps and are discharged periodically. The 272-E and 2703-E Buildings constitute the only discharges to the process sewer line and the 200-E Chemical Drain Field.

Not Available

1994-06-01T23:59:59.000Z

389

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 1952.9±17.6 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

390

An experimental and theoretical investigation of a magnetically confined dc plasma discharge  

SciTech Connect (OSTI)

A magnetically confined dc plasma discharge sustained by a thermionic source was investigated using a combined experimental and theoretical approach. The discharge originates in an arc plasma source and is expanded in a cylindrical chamber, where it is stabilized by an annular anode. The plasma expansion is contained by an axial magnetic field generated by coils positioned at the top and the bottom of the reactor. The plasma reactor design allows control of the energy of ions impinging on the substrate and thus a high electron density of about 10{sup 17} m{sup -3} at 1 Pa can be reached. The plasma is studied using a model composed of the Poisson and of the charged species continuity equations, solved in the flow and temperature fields determined by solving the Navier-Stokes and Fourier equations. The model equations are integrated using the finite element method in a two-dimensional axial symmetric domain. Ionization rates are either assumed constant or determined by solving the Boltzmann transport equation in the local electric field with the Monte Carlo (MC) method. Electron and ion transport parameters are determined by accounting for magnetic confinement through a simplified solution of the ion and electron momentum conservation equations, which yielded parameters in good agreement with those determined with the MC simulations. Calculated electron densities and plasma potentials were satisfactorily compared to those measured using a Langmuir probe. The model demonstrates that the intensity of the magnetic field greatly influences the electron density, so that a decrease by a factor of 2 in its intensity corresponds to a decrease by almost an order of magnitude of the electron and ion concentrations.

Rondanini, Maurizio; Cavallotti, Carlo [Dipartimento. di Chimica, Materiali e Ingegneria Chimica, 'G. Natta' Politecnico di Milano, Via Mancinelli 7, 20131 Milano (Italy); Ricci, Daria [Dipartimento di Fisica, 'G. Occhialini' Universita degli Studi di Milano, Bicocca Piazza della Scienza 3, 20126 Milano (Italy); Chrastina, Daniel; Isella, Giovanni; Moiseev, Tamara; Kaenel, Hans von [L-NESS Laboratory, Dipartimento di Fisica, Politecnico di Milano, Via Anzani 42, 22100 Como (Italy)

2008-07-01T23:59:59.000Z

391

Intense Muon Physics Working Group Summary  

E-Print Network [OSTI]

The intense muon beams which will be available at a neutrino factory provide a unique opportunity for searching for physics beyond the standard model, both in lepton flavor violation and in the search for a permanent electric dipole moment for the muon. Other experiments which can use intense muon beams will also be possible.

B. Lee Roberts; Marco Grassi; Akira Sato

2005-10-20T23:59:59.000Z

392

Description of Energy Intensity Tables (12)  

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

3. Description of Energy Intensity Data Tables 3. Description of Energy Intensity Data Tables There are 12 data tables used as references for this report. Specifically, these tables are categorized as tables 1 and 2 present unadjusted energy-intensity ratios for Offsite-Produced Energy and Total Inputs of Energy for 1985, 1988, 1991, and 1994; along with the percentage changes between 1985 and the three subsequent years (1988, 1991, and 1994) tables 3 and 4 present 1988, 1991, and 1994 energy-intensity ratios that have been adjusted to the mix of products shipped from manufacturing establishments in 1985 tables 5 and 6 present unadjusted energy-intensity ratios for Offsite-Produced Energy and Total Inputs of Energy for 1988, 1991, and 1994; along with the percentage changes between 1988 and the two subsequent

393

Theory and Experiments Relating to the Striated Glow Discharge in Mercury Vapor  

Science Journals Connector (OSTI)

Theory of the glow discharge in a monatomic gas.—For the case of parallel plane electrodes with a hot cathode as source of electrons, the potential distribution and ion concentration in the Crookes dark space, negative glow, Faraday dark space and positive column are shown to be predictable from considerations of space charge and of ionization and excitation of the gas. While with weak currents there is a negative space charge throughout, sufficiently intense ionization is shown to lead to a cathode drop, followed by a region of reversed electric field in which positive ions and electrons both move toward the anode by diffusion, owing to their large concentration gradient. Still farther from the cathode the field changes to its normal direction and increases up to the positive column. In the positive column the field and concentration are uniform unless atoms excited by electron impacts in certain layers are prevented from diffusing between the layers, when striations may be obtained with periodic changes of field and of concentration. The cathode edge of each striation has a positive space charge. The theory of the arc discharge is essentially the same, the arc being simply the negative glow of the longer glow discharge.Glow discharge in mercury vapor.—Various predictions of the above theory were verified by experiments with Hg vapor in vacuum tubes provided with hot cathodes. (1) Potential distribution and ion concentration were investigated by Langmuir's modified probe method and found to agree with the theoretical deductions, except that the concentration of positive ions in the positive column comes out too large. This result indicates the presence of negative mercury ions. (2) The distribution of velocities of electrons is Maxwellian except between striations. (3) The emission of light seems associated more with excitation by electron collision than with ionization and recombination. (4) Conditions for existence of striations. Striations are not found in pure Hg vapor unless the current is small or some substance like H2 is introduced to remove excited atoms. (5) The presence of atomic hydrogen which should be produced in the process of removing excited Hg atoms was proved by use of tungsten oxide. (6) Introduction of He, which cannot remove excited atoms, does not tend to produce striations. (7) The relative concentrations of excited atoms was determined from the optical absorption of subordinate series Hg lines. It was found that excited atoms exist in striations but not in the regions between, and are more numerous if the amount of H2 impurity is reduced.Band spectrum of HgH seems associated with the action of excited Hg atoms on hydrogen, and is emitted as a result of inelastic collisions in striations.

K. T. Compton; Louis A. Turner; W. H. McCurdy

1924-12-01T23:59:59.000Z

394

Characteristics of the plasma jet by applying a pseudo-spark discharge , M.Watanabea+  

E-Print Network [OSTI]

is measured by using an electric probe technique. In this experiment of the discharge current is 10 k, because the discharge changes from the glow to arc mode in the high current discharge. Consequently of electrons along a line of electric force. and effects play an essential role in the discharge formation

Paris-Sud XI, Université de

395

Thermodynamics and Kinetics Analysis of Gasoline Reforming Assisted by Arc Discharge  

Science Journals Connector (OSTI)

Thermodynamics and Kinetics Analysis of Gasoline Reforming Assisted by Arc Discharge ... In the first one, the electric discharge is accounted for as a homogeneous energy source inside the whole reactor. ... kinetic schemes, without inclusion of specific plasma processes, is sufficient for simulation of H prodn. in discharges with hot plasmas, in particular, in low-current arc discharges. ...

Jean-Damien Rollier; Guillaume Petitpas; José Gonzalez-Aguilar; Adeline Darmon; Laurent Fulcheri; Rudolf Metkemeijer

2008-04-18T23:59:59.000Z

396

Capillary - Discharge Based Hand-Held Detector For Chemical Vapor Monitoring  

DOE Patents [OSTI]

A handheld/portable detector for chemical vapor monitoring includes a housing and a discharge chamber that is established therein. The plasma discharge has a relatively small volume, e.g., in the micro-liter range. A first electrode and a second electrode are disposed within the discharge chamber and a discharge gap is established therebetween. A sample gas tube is in fluid communication with the discharge chamber and provides a sample gas to the discharge chamber. Also, a plasma gas tube is in fluid communication with the discharge chamber and provides a plasma gas thereto. Accordingly, the plasma gas can be used to maintain microplasma discharge between the electrodes and the sample gas can be introduced into the microplasma discharge. A spectrometer optically connected to the handheld/portable detector is used to measure the radiation emitted by the sample gas when subjected to the microplasma discharge.

Duan, Yixiang (White Rock, NM)

2005-05-31T23:59:59.000Z

397

Rules and Regulations Pertaining to a User Fee System for Point Source Dischargers that Discharge Pollutants into the Waters of the State (Rhode Island)  

Broader source: Energy.gov [DOE]

These regulations establish a user fee system for point source dischargers that discharge pollutants into the surface waters of the State. The funds from such fees are used by the Department of...

398

Discharge and emission parameters of a plasma electron source based on a discharge in crossed E × H fields with various cathode materials  

Science Journals Connector (OSTI)

A plasma electron source (PES) based on a discharge in...E × H...fields is developed and tested. The working gas is supplied to a quasi-closed PES discharge chamber, in which the conditions for effective ionizati...

A. P. Dostanko; D. A. Golosov

2009-10-01T23:59:59.000Z

399

Impact Factors of Energy Intensity in China  

E-Print Network [OSTI]

Energy intensity reflects energy usage efficiency in the production and consumption process, and leads to carbon dioxide emissions and the energy security of an economy. Liao et al. (2007) analyzed factors contribute to the fluctuation of China’s energy intensity from 1997 to 2006, and found that efficiency effects and structural effects are the major impacting factors. Therefore, they suggested that China should attach more importance to optimizing its sectoral structure, and lowering its investment ratio in the future. However, economic development and energy intensity are influenced by many factors. In their research, Liao et al. (2007) omitted some important contributing factors to energy intensities, and their suggestions also had some practical limitations. First of all, Liao et al. (2007) did not analyze impacts from energy prices in energy usage efficiency. In the existing literature, Birol and Keppler (2000) applied economics theory and suggested that higher energy prices can induce the improvements in energy usage efficiency, thereby lowering energy intensity. Hang and Tu (2007) studied the influence of energy price on the Chinese economy's energy intensity and their empirical results also showed that higher energy prices can lower energy intensity. Because energy prices have been regulated by the

unknown authors

400

Health risk assessment for radium discharged in produced waters  

SciTech Connect (OSTI)

Produced water generated during the production of oil and gas can contain enhanced levels of radium. This naturally occurring radioactive material (NORM) is discharged into freshwater streams, estuarine, coastal and outer continental shelf waters. Large volumes of produced waters are discharged to coastal waters along the Gulf Coast of Louisiana. The Gulf of Mexico is an important producer of fish and shellfish, and there is concern that radium discharged to coastal Louisiana could contaminate fish and shellfish used by people for food, and present a significant increase in cancer risk. This paper describes a screening-level assessment of the potential cancer risks posed by radium discharged to coastal Louisiana in oil-field produced waters. This screening analysis was performed to determine if a more comprehensive and realistic assessment is necessary, and because of the conservative assumptions embedded in the analysis overestimates the risk associated with the discharge of radium in produced waters. Two isotopes of radium (Ra-226 and Ra-228) are the radionuclides of most concern in produced water in terms of potential human health effects.

Hamilton, L.D.; Meinhold, A.F.; Nagy, J.

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "intensity discharge lamps" 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

Health risk assessment for radium discharged in produced waters  

SciTech Connect (OSTI)

Produced water generated during the production of oil and gas can contain enhanced levels of radium. This naturally occurring radioactive material (NORM) is discharged into freshwater streams, estuarine, coastal and outer continental shelf waters. Large volumes of produced waters are discharged to coastal waters along the Gulf Coast of Louisiana. The Gulf of Mexico is an important producer of fish and shellfish, and there is concern that radium discharged to coastal Louisiana could contaminate fish and shellfish used by people for food, and present a significant increase in cancer risk. This paper describes a screening-level assessment of the potential cancer risks posed by radium discharged to coastal Louisiana in oil-field produced waters. This screening analysis was performed to determine if a more comprehensive and realistic assessment is necessary, and because of the conservative assumptions embedded in the analysis overestimates the risk associated with the discharge of radium in produced waters. Two isotopes of radium (Ra-226 and Ra-228) are the radionuclides of most concern in produced water in terms of potential human health effects.

Hamilton, L.D.; Meinhold, A.F.; Nagy, J.

1991-12-31T23:59:59.000Z

402

Techniques for optically compressing light intensity ranges  

DOE Patents [OSTI]

A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter.

Rushford, Michael C. (Livermore, CA)

1989-01-01T23:59:59.000Z

403

Techniques for optically compressing light intensity ranges  

DOE Patents [OSTI]

A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter. 18 figs.

Rushford, M.C.

1989-03-28T23:59:59.000Z

404

Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters-  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Details Activities (3) Areas (1) Regions (0) Abstract: A major campaign to quantify the magmatic carbon discharge in cold groundwaters around Mammoth Mountain volcano in eastern California was carried out from 1996 to 1999. The total water flow from all sampled cold springs was >=1.8_107 m3/yr draining an area that receives an estimated

405

Electron energy distribution function control in gas discharge plasmas  

SciTech Connect (OSTI)

The formation of the electron energy distribution function (EEDF) and electron temperature in low temperature gas discharge plasmas is analyzed in frames of local and non-local electron kinetics. It is shown, that contrary to the local case, typical for plasma in uniform electric field, there is the possibility for EEDF modification, at the condition of non-local electron kinetics in strongly non-uniform electric fields. Such conditions “naturally” occur in some self-organized steady state dc and rf discharge plasmas, and they suggest the variety of artificial methods for EEDF modification. EEDF modification and electron temperature control in non-equilibrium conditions occurring naturally and those stimulated by different kinds of plasma disturbances are illustrated with numerous experiments. The necessary conditions for EEDF modification in gas discharge plasmas are formulated.

Godyak, V. A. [Electrical Engineering and Computer Science Department, University of Michigan, Ann Arbor, Michigan 48109, USA and RF Plasma Consulting, Brookline, Massachusetts (United States)] [Electrical Engineering and Computer Science Department, University of Michigan, Ann Arbor, Michigan 48109, USA and RF Plasma Consulting, Brookline, Massachusetts (United States)

2013-10-15T23:59:59.000Z

406

Electric Discharge Machining (EDM) Projects (4584), 4/11/2012  

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

Electric Discharge Machining (EDM) Projects (4584) Electric Discharge Machining (EDM) Projects (4584) Program or Field Office: Y -12 Site Office Location(s) (Citv/Countv/State): Oak Ridge, Anderson County, Tennessee Proposed Action Description: Submit by E-mail The proposed action is to installation of oil submerged Electric Discharge Machining (EDM) for development and production use. Categorical Exclusion(s) Applied: 81.31 -Installation or relocation of machinery and equipment For the complete DOE National Environmental Policy Act regulations regarding categorical exclusions, including the full text of each categorical exclusion, see Subpart D of 10 CFR Part 1021. Regulatory Requirements in 10 CFR 1021.410(b): (See full text in regulation) [{Jrhe proposal fits within a class of actions that is listed in Appendix A orB to 10 CFR Part 1021, Subpart D.

407

State Waste Discharge Permit application, 100-N Sewage Lagoon  

SciTech Connect (OSTI)

As part of the Hanford Federal Facility Agreement and Consent Order negotiations (Ecology et al. 1994), the US Department of Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect groundwater would be subject to permitting under the structure of Chapter 173--216 (or 173--218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. As a result of this decision, the Washington State Department of Ecology and the US Department of Energy, Richland Operations Office entered into Consent Order No. DE 91NM-177, (Ecology and DOE-RL 1991). This document constitutes the State Waste Discharge Permit application for the 100-N Sewage Lagoon. Since the influent to the sewer lagoon is domestic waste water, the State Waste Discharge Permit application for Public Owned Treatment Works Discharges to Land was used. Although the 100-N Sewage Lagoon is not a Public Owned Treatment Works, the Public Owned Treatment Works application is more applicable than the application for industrial waste water. The 100-N Sewage Lagoon serves the 100-N Area and other Hanford Site areas by receiving domestic waste from two sources. A network of sanitary sewer piping and lift stations transfers domestic waste water from the 100-N Area buildings directly to the 100-N Sewage Lagoon. Waste is also received by trucks that transport domestic waste pumped from on site septic tanks and holding tanks. Three ponds comprise the 100-N Sewage Lagoon treatment system. These include a lined aeration pond and stabilization pond, as well as an unlined infiltration pond. Both piped-in and trucked-in domestic waste is discharged directly into the aeration pond.

Not Available

1994-06-01T23:59:59.000Z

408

Building dependability arguments for software intensive systems  

E-Print Network [OSTI]

A method is introduced for structuring and guiding the development of end-to-end dependability arguments. The goal is to establish high-level requirements of complex software-intensive systems, especially properties that ...

Seater, Robert Morrison

2009-01-01T23:59:59.000Z

409

Computational phase imaging based on intensity transport  

E-Print Network [OSTI]

Light is a wave, having both an amplitude and a phase. However, optical frequencies are too high to allow direct detection of phase; thus, our eyes and cameras see only real values - intensity. Phase carries important ...

Waller, Laura A. (Laura Ann)

2010-01-01T23:59:59.000Z

410

Modelling patient states in intensive care patients  

E-Print Network [OSTI]

Extensive bedside monitoring in hospital Intensive Care Units (ICU) has resulted in a deluge of information on patient physiology. Consequently, clinical decision makers have to reason with data that is simultaneously large ...

Kshetri, Kanak Bikram

2011-01-01T23:59:59.000Z

411

Transport of elliptic intense charged -particle beams  

E-Print Network [OSTI]

The transport theory of high-intensity elliptic charged-particle beams is presented. In particular, the halo formation and beam loss problem associated with the high space charge and small-aperture structure is addressed, ...

Zhou, J. (Jing), 1978-

2006-01-01T23:59:59.000Z

412

Technical Change, Investment and Energy Intensity  

E-Print Network [OSTI]

This paper analyzes the role of different components of technical change on energy intensity by applying a Translog variable cost function setting to the new EU KLEMS dataset for 3 selected EU countries (Italy, Finland and ...

Kratena, Kurt

413

Sustaining Performance Improvements in Energy Intensive Industries  

E-Print Network [OSTI]

Experience has shown that significant opportunity for performance improvements exists in energy intensive operations. Often, efforts to improve efficiency focus on vendor-led initiatives to improve operations of particular equipment. This approach...

Moore, D. A.

2005-01-01T23:59:59.000Z

414

Absolute vs. intensity-based emission caps  

E-Print Network [OSTI]

Cap-and-trade systems limit emissions to some pre-specified absolute quantity. Intensity-based limits, that restrict emissions to some pre-specified rate relative to input or output, are much more widely used in environmental ...

Ellerman, A. Denny.

415

Laser intensity effects in noncommutative QED  

E-Print Network [OSTI]

We discuss a two-fold extension of QED assuming the presence of strong external fields provided by an ultra-intense laser and noncommutativity of spacetime. While noncommutative effects leave the electron's intensity induced mass shift unchanged, the photons change significantly in character: they acquire a quasi-momentum that is no longer light-like. We study the consequences of this combined noncommutative strong-field effect for basic lepton-photon interactions.

Thomas Heinzl; Anton Ilderton; Mattias Marklund

2010-02-17T23:59:59.000Z

416

Regulations For State Administration Of The National Pollutant Discharge  

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

For State Administration Of The National Pollutant For State Administration Of The National Pollutant Discharge Elimination System (Arkansas) Regulations For State Administration Of The National Pollutant Discharge Elimination System (Arkansas) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Arkansas Program Type Siting and Permitting Provider Department of Environmental Quality The Regulations For State Administration Of The National Pollutant

417

High-power pulse modulator with ignitron discharger  

SciTech Connect (OSTI)

The high-power pulse modulator described here is used to produce spatial gaseous discharges and has an improved, controllable charging circuit, which permits a type ITR-4 ignitron discharger to be employed in a frequency mode as the basic commutator. The modulator is utilized in two modes: at a pulse repetition frequency of 50 Hz pulses are formed that have a duration of 25 usec and energies up to 3.5 kJ and at a frequency of 200 Hz, the pulses have a duration of -2 usec and energies up to 600 J. In all conditions the modulator operated stably with a wide range of load changes.

Anisimova, T.E.; Akkuratov, E.V.; Artemov, V.A.; Gromovenko, V.M.; Kalinin, V.P.; Nikonov, V.P.

1985-10-01T23:59:59.000Z

418

Multifunctional bulk plasma source based on discharge with electron injection  

SciTech Connect (OSTI)

A bulk plasma source, based on a high-current dc glow discharge with electron injection, is described. Electron injection and some special design features of the plasma arc emitter provide a plasma source with very long periods between maintenance down-times and a long overall lifetime. The source uses a sectioned sputter-electrode array with six individual sputter targets, each of which can be independently biased. This discharge assembly configuration provides multifunctional operation, including plasma generation from different gases (argon, nitrogen, oxygen, acetylene) and deposition of composite metal nitride and oxide coatings.

Klimov, A. S.; Medovnik, A. V. [Tomsk State University of Control Systems and Radioelectronics, Tomsk 634050 (Russian Federation); Tyunkov, A. V. [Tomsk State University of Control Systems and Radioelectronics, Tomsk 634050 (Russian Federation); Institute of High Current Electronics, Tomsk 634055 (Russian Federation); Savkin, K. P.; Shandrikov, M. V.; Vizir, A. V. [Institute of High Current Electronics, Tomsk 634055 (Russian Federation)

2013-01-15T23:59:59.000Z

419

Numerical simulation of carbon arc discharge for nanoparticle synthesis  

SciTech Connect (OSTI)

Arc discharge with catalyst-filled carbon anode in helium background was used for the synthesis of carbon nanoparticles. In this paper, we present the results of numerical simulation of carbon arc discharges with arc current varying from 10 A to 100 A in a background gas pressure of 68 kPa. Anode sublimation rate and current voltage characteristics are compared with experiments. Distribution of temperature and species density, which is important for the estimation of the growth of nanoparticles, is obtained. The probable location of nanoparticle growth region is identified based on the temperature range for the formation of catalyst clusters.

Kundrapu, M.; Keidar, M. [Department of Mechanical and Aerospace Engineering, George Washington University, Washington, DC 20052 (United States)

2012-07-15T23:59:59.000Z

420

Large area, surface discharge pumped, vacuum ultraviolet light source  

DOE Patents [OSTI]

Large area, surface discharge pumped, vacuum ultraviolet (VUV) light source is disclosed. A contamination-free VUV light source having a 225 cm{sup 2} emission area in the 240-340 nm region of the electromagnetic spectrum with an average output power in this band of about 2 J/cm{sup 2} at a wall-plug efficiency of approximately 5% is described. Only ceramics and metal parts are employed in this surface discharge source. Because of the contamination-free, high photon energy and flux, and short pulse characteristics of the source, it is suitable for semiconductor and flat panel display material processing. 3 figs.

Sze, R.C.; Quigley, G.P.

1996-12-17T23:59:59.000Z

Note: This page contains sample records for the topic "intensity discharge lamps" 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

Characteristics of electromagnetic interference generated during discharge of Mylar samples  

SciTech Connect (OSTI)

This paper discusses the measurements of the electromagnetic interference (EMI) generated during discharges of Mylar samples. The two components of EMI, the conducted emission and the radiated emission, are characterized by the replacement current and the radiated RF spectrum respectively. The measured radiated RF spectra reveal important information on the source of the electromagnetic radiation. The possible sources are the replacement current pulse and the discharged generated plasma. The scaling of the amplitudes of the EMI, as a function of the area of the test sample, is also discussed.

Leung, P.L.

1984-12-01T23:59:59.000Z

422

Electrostatic Discharge Sensitivity and Electrical Conductivity of Composite Energetic Materials  

SciTech Connect (OSTI)

Composite energetic material response to electrical stimuli was investigated and a correlation between electrical conductivity and ignition sensitivity was examined. The composites consisted of micrometer particle aluminum combined with another metal, metal oxide, or fluoropolymer. Of the nine tested mixtures, aluminum with copper oxide was the only mixture to ignite by electrostatic discharge with minimum ignition energy (MIE) of 25 mJ and an electrical conductivity of 1246.25 nS; two orders of magnitude higher than the next composite. This study showed a similar trend in MIE for ignition triggered by a discharged spark compared with a thermal hot wire source.

Michael A. Daniels; Daniel J. Prentice; Chelsea Weir; Michelle L. Pantoya; Gautham Ramachandran; Tim Dallas

2013-02-01T23:59:59.000Z

423

ON COMPUTING UPPER LIMITS TO SOURCE INTENSITIES  

SciTech Connect (OSTI)

A common problem in astrophysics is determining how bright a source could be and still not be detected in an observation. Despite the simplicity with which the problem can be stated, the solution involves complicated statistical issues that require careful analysis. In contrast to the more familiar confidence bound, this concept has never been formally analyzed, leading to a great variety of often ad hoc solutions. Here we formulate and describe the problem in a self-consistent manner. Detection significance is usually defined by the acceptable proportion of false positives (background fluctuations that are claimed as detections, or Type I error), and we invoke the complementary concept of false negatives (real sources that go undetected, or Type II error), based on the statistical power of a test, to compute an upper limit to the detectable source intensity. To determine the minimum intensity that a source must have for it to be detected, we first define a detection threshold and then compute the probabilities of detecting sources of various intensities at the given threshold. The intensity that corresponds to the specified Type II error probability defines that minimum intensity and is identified as the upper limit. Thus, an upper limit is a characteristic of the detection procedure rather than the strength of any particular source. It should not be confused with confidence intervals or other estimates of source intensity. This is particularly important given the large number of catalogs that are being generated from increasingly sensitive surveys. We discuss, with examples, the differences between these upper limits and confidence bounds. Both measures are useful quantities that should be reported in order to extract the most science from catalogs, though they answer different statistical questions: an upper bound describes an inference range on the source intensity, while an upper limit calibrates the detection process. We provide a recipe for computing upper limits that applies to all detection algorithms.

Kashyap, Vinay L.; Siemiginowska, Aneta [Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States); Van Dyk, David A.; Xu Jin [Department of Statistics, University of California, Irvine, CA 92697-1250 (United States); Connors, Alanna [Eureka Scientific, 2452 Delmer Street, Suite 100, Oakland, CA 94602-3017 (United States); Freeman, Peter E. [Department of Statistics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213 (United States); Zezas, Andreas, E-mail: vkashyap@cfa.harvard.ed, E-mail: asiemiginowska@cfa.harvard.ed, E-mail: dvd@ics.uci.ed, E-mail: jinx@ics.uci.ed, E-mail: aconnors@eurekabayes.co, E-mail: pfreeman@cmu.ed, E-mail: azezas@cfa.harvard.ed [Physics Department, University of Crete, P.O. Box 2208, GR-710 03, Heraklion, Crete (Greece)

2010-08-10T23:59:59.000Z

424

Generation of Superthermal Electrons in a Micropinch Discharge  

SciTech Connect (OSTI)

Results are presented from experimental studies of the formation of the superthermal electron component in a micropinch discharge plasma. Radiative collapse in a Z-pinch is found to affect the energy of the accelerated electrons. That the radiative collapse has been reached may be inferred from the energy of the emitted hard X-ray photons.

Dolgov, A.N. [Moscow Engineering Physics Institute, Kashirskoe sh. 31, Moscow, 115409 (Russian Federation); Vikhrev, V.V. [Institute of Nuclear Fusion, Russian Research Centre Kurchatov Institute, pl. Akademika Kurchatova 1, Moscow, 123182 (Russian Federation)

2005-03-15T23:59:59.000Z

425

Discrimination between Jovian radio emissions and Saturn electrostatic discharges  

E-Print Network [OSTI]

vertical streaks in the dynamic spectrum of the Cassini/RPWS (Radio and Plasma Wave Science) receiver in the frequency range of a few MHz can be due to Jovian radio emissions or SEDs (Saturn electrostatic discharges caused by lightning in Saturn's atmosphere. We show a method for discriminating between these two

Gurnett, Donald A.

426

COLLISIONLESS ELECTRON HEATING IN RF GAS DISCHARGES: I. QUASILINEAR THEORY  

E-Print Network [OSTI]

COLLISIONLESS ELECTRON HEATING IN RF GAS DISCHARGES: I. QUASILINEAR THEORY Yu.M. Aliev1 , I an interest in mechanisms of electron heating and power deposition in the plasma main- tained by radio parameters. Due to the large value of the mean free path (MFP) the main mechanism of electron heating turns

Kaganovich, Igor

427

The Combination of Hydrogen and Oxygen by Electric Discharges  

Science Journals Connector (OSTI)

Combination of hydrogen and oxygen in the Geissler discharge, low-voltage arc and electrodeless discharge.—It was noted that combination ceased to be explosive in equivalent volumes of the two gases at pressures below 3 cm. Logarithmic decrease in pressure was obtained in equivalent volumes in the Geissler discharge for constant current, whereas excess oxygen increased and excess hydrogen decreased the rate of combination, a similar change in rate having been noted by Lind in his alpha-ray experiments.Number of water molecules formed per pair of ions, as function of pressure.—From a consideration of the number of ions present in the Geissler discharge it appears that the number, k, of water molecules formed per pair of ions at the lower pressures is much less than unity, but that it increases with increasing pressure and may approach the value obtained by Lind at somewhat higher pressures. The pressure at which k approximates unity is such that the time between molecular collisions is of the order of magnitude of the life of an excited hydrogen atom. This is consistent with the view that combination may be due to some similar type of excitation produced by a process secondary to ionization.

Rogers D. Rusk

1928-08-01T23:59:59.000Z

428

INTRODUCTION Weakly electric fish generate an electric organ discharge (EOD)  

E-Print Network [OSTI]

4196 INTRODUCTION Weakly electric fish generate an electric organ discharge (EOD) that results in an electric field that surrounds the fish's body. In Eigenmannia, the EOD is quasi-sinusoidal and when fish are in close proximity (~1m or less) their EODs interact. In the case of two nearby conspecifics, the combined

429

ICE SHEET SOURCES OF SEA LEVEL RISE AND FRESHWATER DISCHARGE  

E-Print Network [OSTI]

ICE SHEET SOURCES OF SEA LEVEL RISE AND FRESHWATER DISCHARGE DURING THE LAST DEGLACIATION Anders E the sources of sea level rise and freshwater dis- charge to the global oceans associated with retreat of ice­10 m sea level rise at 19.0­19.5 ka, sourced largely from Northern Hemisphere ice sheet retreat

Carlson, Anders

430

Radioactive Liquid Waste Treatment Facility Discharges in 2011  

SciTech Connect (OSTI)

This report documents radioactive discharges from the TA50 Radioactive Liquid Waste Treatment Facilities (RLWTF) during calendar 2011. During 2011, three pathways were available for the discharge of treated water to the environment: discharge as water through NPDES Outfall 051 into Mortandad Canyon, evaporation via the TA50 cooling towers, and evaporation using the newly-installed natural-gas effluent evaporator at TA50. Only one of these pathways was used; all treated water (3,352,890 liters) was fed to the effluent evaporator. The quality of treated water was established by collecting a weekly grab sample of water being fed to the effluent evaporator. Forty weekly samples were collected; each was analyzed for gross alpha, gross beta, and tritium. Weekly samples were also composited at the end of each month. These flow-weighted composite samples were then analyzed for 37 radioisotopes: nine alpha-emitting isotopes, 27 beta emitters, and tritium. These monthly analyses were used to estimate the radioactive content of treated water fed to the effluent evaporator. Table 1 summarizes this information. The concentrations and quantities of radioactivity in Table 1 are for treated water fed to the evaporator. Amounts of radioactivity discharged to the environment through the evaporator stack were likely smaller since only entrained materials would exit via the evaporator stack.

Del Signore, John C. [Los Alamos National Laboratory

2012-05-16T23:59:59.000Z

431

Treated wastewater discharged from municipal wastewater treatment plants (WWTPs) contains  

E-Print Network [OSTI]

Treated wastewater discharged from municipal wastewater treatment plants (WWTPs) contains to provide rapid, field-ready, inexpen- sive testing of these chemicals in wastewater is also needed estrogenic chemicals, and 2) develop sensor technology for the rapid measure- ment in wastewater of two key

Fay, Noah

432

Doppler effect for an optical discharge source of shock waves  

SciTech Connect (OSTI)

The Doppler effect for a moving pulsating optical discharge producing periodic shock waves is considered. The manifestations of the effect are limited by the wave merging mechanism. The validity conditions were found for the effect in the case of a pulsating source of shock waves. (interaction of laser radiation with matter. laser plasma)

Tishchenko, V N [Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk (Russian Federation)

2005-11-30T23:59:59.000Z

433

THE POSSIBILITY OF PRODUCING THERMONUCLEAR REACTIONS IN A GASEOUS DISCHARGE*  

E-Print Network [OSTI]

THE POSSIBILITY OF PRODUCING THERMONUCLEAR REACTIONS IN A GASEOUS DISCHARGE* I.V. Kurchatov of the energy of thermonuclear reactions. Physicists the world over are attracted by the extraordinarily interest- ing and very difficult task of controlling thermonuclear reactiom. Investigations in this field

434

Relationships Between Rate and Pattern of Unitary Discharges in Medial  

E-Print Network [OSTI]

Department of Psychobiology, School of Biological Sciences, University of California, Iwine, California 92664, a relatively brief sample of the single-unit record is often the basis for characterizing the stimulus-response charac- teristics of a unit. If unit discharge char- acteristics are invariant over time, a sample record

Weinberger, Norman M.

435

Condenser for extreme-UV lithography with discharge source  

DOE Patents [OSTI]

Condenser system, for use with a ringfield camera in projection lithography, employs quasi grazing-incidence collector mirrors that are coated with a suitable reflective metal such as ruthenium to collect radiation from a discharge source to minimize the effect of contaminant accumulation on the collecting mirrors.

Sweatt, William C. (Albuquerque, NM); Kubiak, Glenn D. (Livermore, CA)

2001-01-01T23:59:59.000Z

436

Joint probability of precipitation and discharge deficits in the Netherlands  

E-Print Network [OSTI]

Joint probability of precipitation and discharge deficits in the Netherlands Jules J. Beersma and T. Adri Buishand Royal Netherlands Meteorological Institute, De Bilt, The Netherlands Received 14 April] The Netherlands are situated at the downstream end of the Rhine River. A large part of the country can be supplied

Beersma, Jules

437

An experimental system for controlled exposure of biological samples to electrostatic discharges  

E-Print Network [OSTI]

in 1809 [1] ­ have many fields of application, ranging from light sources (arc lamps, including (arc furnaces) and plasma cutting. Recently, it was reported that nanosecond electric arcs (sparks an electric arc with adjust- able air gap width or through direct contact, and reliable electrical insulation

Ljubljana, University of

438

Characteristics of radio-frequency, atmospheric-pressure glow discharges with air using bare metal electrodes  

SciTech Connect (OSTI)

In this letter, an induced gas discharge approach is proposed and described in detail for obtaining a uniform atmospheric-pressure glow discharge with air in a {gamma} mode using water-cooled, bare metal electrodes driven by radio-frequency (13.56 MHz) power supply. A preliminary study on the discharge characteristics of the air glow discharge is also presented in this study. With this induced gas discharge approach, radio-frequency, atmospheric-pressure glow discharges using bare metal electrodes with other gases which cannot be ignited directly as the plasma working gas, such as nitrogen, oxygen, etc., can also be obtained.

Wang Huabo; Sun Wenting; Li Heping; Bao Chengyu; Zhang Xiaozhang [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)

2006-10-16T23:59:59.000Z

439

A Theory of the Electric Discharge Through Gases  

Science Journals Connector (OSTI)

Three general differential equations are set up which determine the average behavior of a discharge of electricity through a gas. Approximate solutions, giving the electric field E and the concentration of electrons and positive ions, n1 and n2, at any distance x from the cathode, are found for several ranges of value of E.When E is large, the solution corresponds to the conditions in the cathode and anode fall spaces in a glow discharge. Equations are obtained for the potential drop V across the fall space; the current density at the electrode divided by the square of the gas pressure, jp2; and the thickness of the fall space times the pressure, pd.These equations indicate that for the cathode fall space there is a certain minimum value of V, called Vn; and for jp2, called jnp2; and a corresponding maximum value of pd, pdn, beyond which values the discharge ceases. These stationary values are shown to be constants, dependent only on the nature of the gas used and of the cathode material, and correspond to the normal cathode fall space. The equation determining Vn is shown to be of the right from by comparison with the experimentally determined values. From these values of Vn, values of jnp2 and of pdn are calculated for four gases and four cathode materials, and the calculated values check with the experimental data. The corresponding equations for the anode fall space show why there is no corresponding normal anode fall.A consideration of the discharge when E is large throughout the distance between electrodes indicates that there is another stationary value of the cathode fall space when the current density at the cathode reaches its maximum possible value. The V in this case is much smaller than the Vn for the glow discharge, and the form of the equations indicate that they describe the conditions in an electric arc.Another approximate equation is obtained when E is constant, which is the case in the positive column of a glow discharge. This solution indicates that within certain limits of pressure and current density, small sinusoidal variations about the average value Ep, are possible in E. These correspond to the striations sometimes observed in the positive column. The equations determining Ep and those determining the distance between striations check with the known empirical laws relating these amounts to the pressure, the radius of the discharge tube and the critical potentials of the gas used. A general discussion is given of the Faraday dark space and reasons are given why it should be near the cathode rather than the anode.

Philip M. Morse

1928-06-01T23:59:59.000Z

440

Future High-Intensity Proton Accelerators  

E-Print Network [OSTI]

This paper provides an overview of currently planned high-intensity proton accelerators. While for high energies (>10GeV) synchrotrons remain the preferred tools to produce high-intensity beams, recent years have seen an impressive development of linac-based lower-energy (intensity proton drivers for spallation sources, accelerator driven systems (ADS), production of Radioactive Ion Beams (RIB) and various neutrino applications (beta-beam, superbeam, neutrino factory). This paper discusses the optimum machine types for the various beam requirements and uses a range of projects, which are likely to be realised within the coming decade, to illustrate the different approaches to reach high average beam power with the application-specific time structure. Only machines with a beam power above 100kW are considered.

Gerigk, F

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "intensity discharge lamps" 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

Short rise time intense electron beam generator  

DOE Patents [OSTI]

A generator for producing an intense relativisitc electron beam having a subnanosecond current rise time includes a conventional generator of intense relativistic electrons feeding into a short electrically conductive drift tube including a cavity containing a working gas at a low enough pressure to prevent the input beam from significantly ionizing the working gas. Ionizing means such as a laser simultaneously ionize the entire volume of working gas in the cavity to generate an output beam having a rise time less than one nanosecond.

Olson, C.L.

1984-03-16T23:59:59.000Z

442

Analysis of the Energy Intensity of Industries in California  

E-Print Network [OSTI]

the aggregate energy-intensity of industry. Applied Energyindustries with final energy intensities of 12.3 Billion BtuAs mentioned, the energy intensity of this sector is much

Can, Stephane de la Rue du

2014-01-01T23:59:59.000Z

443

Plasma Polymerization in an Atmospheric Pressure Dielectric Barrier Discharge in a Flowing Gas  

Science Journals Connector (OSTI)

The plasma of atmospheric pressure dielectric barrier discharges (DBD) has ... ozone generation by Siemens 1857. Non-thermal atmospheric pressure discharges are of considerable interest because...1, 2.... The DBD...

Rüdiger Foest; Martin Schmidt; Jürgen F. Behnke

2004-01-01T23:59:59.000Z

444

Carbon nanostructures production by AC arc discharge plasma process at atmospheric pressure  

Science Journals Connector (OSTI)

Carbon nanostructures have received much attention for a wide range of applications. In this paper, we produced carbon nanostructures by decomposition of benzene using AC arc discharge plasma process at atmospheric pressure. Discharge was carried out ...

Shenqiang Zhao; Ruoyu Hong; Zhi Luo; Haifeng Lu; Biao Yan

2011-01-01T23:59:59.000Z

445

Boundary Layer Flow Control With a One Atmosphere Uniform Glow Discharge Surface Plasma  

Science Journals Connector (OSTI)

Low speed wind tunnel data have been acquired for planar panels covered by a uniform, glow-discharge surface plasma in atmospheric pressure air known as the One Atmosphere Uniform Glow Discharge Plasma (OAUGDP). Streamwise and spanwise arrays of flush, ...

Roth J. Reece; Sherman Daniel M.; Wilkinson Stephen P.

1998-01-01T23:59:59.000Z

446

Obtaining Carbon Nanoparticles with the Use of Electric?Arc Discharge between Coaxial Electrodes  

Science Journals Connector (OSTI)

The structure of a setup and the results of experiments on obtaining carbon nanostructures with the use of a d.c. arc discharge between coaxial graphite electrodes have been presented. The discharge was stabil...

V. V. Chuprasov; M. S. Tret'yak…

447

Sliding electric arc discharge as a means of aircraft trajectory control  

Science Journals Connector (OSTI)

The dynamics of sliding electric arc discharge and the formation of shock waves in the stages of leader motion and the electric arc development in a supersonic air flow behind ... (bar). The air flow in the discharge

V. S. Aksenov; V. V. Golub; S. A. Gubin; V. P. Efremov…

2004-10-01T23:59:59.000Z

448

Experimental investigation of the sliding electric frequency mode arc discharge in the subsonic and supersonic flow  

Science Journals Connector (OSTI)

The plasma of the discharge, initiated along a surface of wing or the fuselage, is promising aircraft control facility. Strong shock wave formation at air gap disruption by the sliding discharge (SD) changes a...

V.S. Aksenov; S.A. Gubin; K.V. Efremov; V.V. Golub

2009-01-01T23:59:59.000Z

449

Growth Conditions of Double-Walled Carbon Nanotubes in Arc Discharge  

Science Journals Connector (OSTI)

Growth Conditions of Double-Walled Carbon Nanotubes in Arc Discharge ... Preparation conditions for large-scale synthesis of double-walled carbon nanotubes (DWCNTs) by using electric arc discharge were examined. ...

Yahachi Saito; Takanori Nakahira; Sashiro Uemura

2003-01-04T23:59:59.000Z

450

Numerical investigation on operation mode influenced by external frequency in atmospheric pressure barrier discharge  

SciTech Connect (OSTI)

The influence of external driving frequency on the discharge mode in the dielectric barrier discharge was investigated with a two-dimensional, self-consistent fluid model. The simulation results show that the helium discharge exhibits three operation modes: Townsend, homogeneous glow, and local glow discharges from the lower frequency (1 kHz) to the higher frequency (100 kHz) under discharge parameters specified in this work. The discharge operates in a Townsend mode when the driving frequency varies from 1 to about 7 kHz; while it exhibits homogenous glow characteristics in an approximate range from 7 to 65 kHz; when the external frequency exceeds 65 kHz, it turns into a local glow discharge. The effects of external driving frequency on the discharge mode were revealed and the physical reasons were discussed.

Wang Qi [Dalian Institute of Semiconductor Technology, School of Electronics Science and Technology, Dalian University of Technology, Dalian 116023 (China); Sun Jizhong; Wang Dezhen [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China)

2011-10-15T23:59:59.000Z

451

Patterns of the electric organ discharge during courtship and spawning in the mormyrid fish, Pollimyrus isidori  

Science Journals Connector (OSTI)

Pollimyrus isidori's electric organ discharge (EOD) is of the pulse type. Patterns of EOD intervals were investigated prior to, during and...n=15) showed characteristic discharge interval pattern...

B. O. Bratton; B. Kramer

1989-06-01T23:59:59.000Z

452

Electron Energy Analysis of Vacuum Discharge in High-Voltage Accelerator Tube  

Science Journals Connector (OSTI)

......measurement of the electron energy spectrum during discharge adds some new knowledge to the total voltage...authors sincerely thank Electron Energy Analysis of Vacuum Discharge...Physics, Academic Press, New York, Vol. 6, p. 297. 25......

Akio TAKAOKA; Katsumi URA; Kiyokazu YOSHIDA

1982-01-01T23:59:59.000Z

453

Measurement and Processing of Fast Pulsed Discharge Current in Plasma Focus Machines  

Science Journals Connector (OSTI)

The fast pulsed electric discharge current drives all physical processes in the plasma focus device; in turn all physical processes in the focus affect the current waveform. Thus the discharge ... current wavefor...

S. Lee; S. H. Saw; R. S. Rawat; P. Lee; R. Verma…

2012-04-01T23:59:59.000Z

454

2014 call for NERSC's Data Intensive Computing Pilot Program...  

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

NERSC's Data Intensive Computing Pilot Program 2014 call for NERSC's Data Intensive Computing Pilot Program Due December 10 November 18, 2013 by Francesca Verdier (0 Comments)...

455

ITP Energy Intensive Processes: Improved Heat Recovery in Biomass...  

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

Energy Intensive Processes: Improved Heat Recovery in Biomass-Fired Boilers ITP Energy Intensive Processes: Improved Heat Recovery in Biomass-Fired Boilers biomass-firedboilers.pd...

456

ARM - Evaluation Product - MFRSR-Column Intensive Properties  

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

Product : MFRSR-Column Intensive Properties The MFRSR-Column Intensive Properties (CIP) value-added product (VAP) has been developed for estimating the microphysical (e.g.,...

457

Strategies for the Commercialization & Deployment of GHG Intensity...  

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

Strategies for the Commercialization & Deployment of GHG Intensity-Reducing Technologies & Practices Strategies for the Commercialization & Deployment of GHG Intensity-Reducing...

458

2nd conference on Intense field- Short Wavelength Atomic and...  

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

nd conference on Intense field- Short Wavelength Atomic and Molecular Processes - ISWAMP2 2nd conference on Intense field- Short Wavelength Atomic and Molecular Processes - ISWAMP2...

459

Reducing Industrial Energy Intensity in the Southeast Project...  

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

Industrial Energy Intensity in the Southeast Project Fact Sheet Reducing Industrial Energy Intensity in the Southeast Project Fact Sheet This fact sheet contains details regarding...

460

Ozone production by nanoporous dielectric barrier glow discharge in atmospheric pressure air  

SciTech Connect (OSTI)

This study is aimed at demonstrating plasma-chemical ozone production based on low temperature atmospheric pressure glow discharge through nanoporous dielectric barriers. The 20 kHz ac driven discharge is formed in air or oxygen gas flowing in the axial direction of the cylindrical plasma reactor containing four parallel aluminum rods covered with nanoporous alumina films. The discharge utilizing nanoporous dielectric barrier is more uniform and more energy efficient in ozone generation than the discharge through smooth-surface dielectric barriers.

Cho, J. H.; Koo, I. G.; Choi, M. Y.; Lee, W. M. [Department of Chemistry and Division of Energy Systems Research, Ajou University, Suwon 443-749 (Korea, Republic of)

2008-03-10T23:59:59.000Z

Note: This page contains sample records for the topic "intensity discharge lamps" 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

Author's personal copy Ionic and neuromodulatory regulation of burst discharge controls frequency tuning  

E-Print Network [OSTI]

discharge (EOD), in order to sense its environment (Fig. 1A). Changes in the expected pattern of the EOD

Chacron, Maurice

462

E-Print Network 3.0 - air vents discharge Sample Search Results  

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1519 6.2. Compressed air energy storage... and discharge rates for many cycles. Indeed, the high cycling...

463

Limiting discharge voltage of a capacitive energy store in a subway car  

Science Journals Connector (OSTI)

A method is proposed for calculating the limiting discharge voltage of a capacitive energy store in a subway car.

G. G. Ryabtsev; I. A. Ermakov

2012-12-01T23:59:59.000Z

464

WHERE ARE THE MOST INTENSE THUNDERSTORMS  

E-Print Network [OSTI]

provided unparalleled information on the global distribution of intense convective storms. T he Tropical-alti- tude, non-sun-synchronous orbit permits sampling throughout the diurnal cycle of precipitation. The cloud-top temperature of storms has been measured using infrared (IR) bright- ness temperature (Tb

Nesbitt, Steve

465

Transition from Townsend to glow discharge: Subcritical, mixed, or supercritical characteristics Danijela D. Sijacic1  

E-Print Network [OSTI]

Transition from Townsend to glow discharge: Subcritical, mixed, or supercritical characteristics, the transition from Townsend to glow discharge can show the textbook subcritical behavior, but for smaller values long discharges that have a clearly pronounced subcritical characteristics, i.e., for fixed large pd

Ebert, Ute

466

Using sensitivity derivatives for design and parameter estimation in an atmospheric plasma discharge simulation  

Science Journals Connector (OSTI)

The problem of applying sensitivity analysis to a one-dimensional atmospheric radio frequency plasma discharge simulation is considered. A fluid simulation is used to model an atmospheric pressure radio frequency helium discharge with a small nitrogen ... Keywords: Adjoint, Direct differentiation, Optimization, Plasma discharge, Sensitivity analysis, Uncertainty analysis

Kyle J. Lange; W. Kyle Anderson

2010-08-01T23:59:59.000Z

467

A DC corona discharge on a flat plate to induce air Pierre MAGNIER1  

E-Print Network [OSTI]

with applied voltage. Moreover, with voltage higher than a threshold value, the electric discharge changes. For this purpose, different electric discharges have recently been developed, such as the "One Atmosphere Uniform to an arc regime. Figure 1: DC surface corona discharge actuator on a flat plate. 2.2. Optical Setup

Paris-Sud XI, Université de

468

POSITIVE ION CURRENTS IN THE POSITIVE COLUMN OF THE GLOW-DISCHARGE IN THE NOBLE GASES  

Science Journals Connector (OSTI)

...thin glass tubes. The discharge tube, diameter 6 cm...potentials. In the mercury arc the positive ion part...the case in the neon discharge. Similar curves were...and the body of the discharge, looking much like...efficiency for the photo- electric effect than has ever...

W. Uyterhoeven

1929-01-01T23:59:59.000Z

469

The Mormyromast Region of the Mormyrid Electrosensory Lobe. I. Responses to Corollary Discharge and Electrosensory Stimuli  

E-Print Network [OSTI]

of the electric organ discharge (EOD) by two different inputs, EOD-evoked reafferent input from electroreceptors and corollary discharge input associated with the motor command that elicits the EOD. This first paper examines associated with the motor command that drives the electric organ discharge (EOD). The goal is to understand

Roberts, Patrick D.

470

Three-dimensional Composite Lattice Structures Fabricated by Electrical Discharge Machining  

E-Print Network [OSTI]

construction by means of electrical discharge machining (EDM). First, flat- top corrugated carbon fiber. In this paper, we used electrical discharge machining (EDM)--previously used to transform corrugated metallicThree-dimensional Composite Lattice Structures Fabricated by Electrical Discharge Machining J

Vaziri, Ashkan

471

Two-Dimensional Numerical Modeling of Radio-Frequency Ion Engine Discharge  

E-Print Network [OSTI]

Two-Dimensional Numerical Modeling of Radio-Frequency Ion Engine Discharge Michael Meng-Tsuan Tsay-Frequency Ion Engine Discharge Michael Meng-Tsuan Tsay, Manuel Martinez-Sanchez August 2010 SSL # 14 Modeling of Radio-Frequency Ion Engine Discharge by Michael Meng-Tsuan Tsay Submitted to the Department

472

The role of the gas/plasma plume and self-focusing in a gas-filled capillary discharge waveguide for high-power laser-plasma applications  

E-Print Network [OSTI]

The role of the gas/plasma plume at the entrance of a gas-filled capillary discharge plasma waveguide in increasing the laser intensity has been investigated. Distinction is made between neutral gas and hot plasma plumes that, respectively, develop before and after discharge breakdown. Time-averaged measurements show that the on-axis plasma density of a fully expanded plasma plume over this region is similar to that inside the waveguide. Above the critical power, relativistic and ponderomotive selffocusing lead to an increase in the intensity, which can be nearly a factor of 2 compared with the case without a plume. When used as a laser plasma wakefield accelerator, the enhancement of intensity can lead to prompt electron injection very close to the entrance of the waveguide. Self-focusing occurs within two Rayleigh lengths of the waveguide entrance plane in the region, where the laser beam is converging. Analytical theory and numerical simulations show that, for a density of 3.01018 cm3, the peak normalized...

Ciocarlan, C.; Islam, M. R.; Ersfeld, B.; Abuazoum, S.; Wilson, R.; Aniculaesei, C.; Welsh, G. H.; Vieux, G.; Jaroszynski, D. A.

2013-01-01T23:59:59.000Z

473

ArcSafe® with Pulsed Arrested Spark Discharge  

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

ArcSafe® ArcSafe® with Pulsed Arrested Spark Discharge  2007 R&D 100 Award Entry Form ArcSafe® with Pulsed Arrested Spark Discharge  Joint Submitters Submitting Organization Sandia National Laboratories PO Box 5800, MS 1181 Albuquerque, NM 87185-1181 USA Larry Schneider Phone: (505) 845-7135 Fax: (505) 845-7685 Email: lxschne@sandia.gov AFFIRMATION: I affirm that all information submitted as a part of, or supplemental to, this entry is a fair and accurate represen- tation of this product. (Signature)______________________________________ Astronics-Advanced Electronic Systems, Inc. 9845 Willows Rd NE City: Redmond State: WA Zip/Postal: 98052-2540 USA Contact Name: Michael Ballas, Program Manager Phone: (425) 895-4304 Fax: (425)702.4930 Email: michael.ballas@astronics.com

474

Zero Discharge Water Management for Horizontal Shale Gas Well Development  

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

Discharge Water Management for Discharge Water Management for Horizontal Shale Gas Well Development Final Report Start Date: October 1, 2009 End Date: March 31, 2012 Authors: Paul Ziemkiewicz, PhD Jennifer Hause Raymond Lovett, PhD David Locke Harry Johnson Doug Patchen, PG Report Date Issued: June 2012 DOE Award #: DE-FE0001466 Submitting Organization: West Virginia Water Research Institute West Virginia University PO Box 6064 Morgantown, WV 26506-6064 FilterSure, Inc. PO Box 1277 McLean, VA 22101 ShipShaper, LLP PO Box 2 Morgantown, WV 26507 2 | P a g e Acknowledgment "This material is based upon work supported by the Department of Energy under Award Number DE-FE0001466." Disclaimer "This report was prepared as an account of work sponsored by an agency of the United States

475

Glow discharge deposition at high rates using disilane  

SciTech Connect (OSTI)

The research program reported makes use of the fact that amorphous silicon films can be grown faster from disilane in a glow discharge than from the traditional silane. The goal is to find a method to grow films at a high rate and with sufficiently high quality to be used in an efficient solar cell. It must also be demonstrated that the appropriate device structure can be successfully fabricated under conditions which give high deposition rates. High quality intrinsic films have been deposited at 20 A/s. Efficiency of 5.6% on steel substrates and 5.3% on glass substrates were achieved using disilane i-layers deposited at 15 A/s in a basic structure, without wide-gap doped layers or light trapping. Wide gap p-layers were deposited using disilane. Results were compared with those obtained at Vactronic using high power discharges of silane-hydrogen mixtures. (LEW)

Rajeswaran, G.; Corderman, R.R.; Kampas, F.J.; Vanier, P.E.

1985-01-01T23:59:59.000Z

476

Redox reactions with empirical potentials: Atomistic battery discharge simulations  

E-Print Network [OSTI]

Batteries are pivotal components in overcoming some of today's greatest technological challenges. Yet to date there is no self-consistent atomistic description of a complete battery. We take first steps toward modeling of a battery as a whole microscopically. Our focus lies on phenomena occurring at the electrode-electrolyte interface which are not easily studied with other methods. We use the redox split-charge equilibration (redoxSQE) method that assigns a discrete ionization state to each atom. Along with exchanging partial charges across bonds, atoms can swap integer charges. With redoxSQE we study the discharge behavior of a nano-battery, and demonstrate that this reproduces the generic properties of a macroscopic battery qualitatively. Examples are the dependence of the battery's capacity on temperature and discharge rate, as well as performance degradation upon recharge.

Dapp, Wolf B

2013-01-01T23:59:59.000Z

477

Characteristics Of A Dielectric Barrier Discharge In Atmospheric Air  

SciTech Connect (OSTI)

Parallel plate dielectric barrier discharges consisting of two electrodes with glass (epsilon{sub r} = 7.5) and alumina (epsilon{sub r} = 9.0) as the dielectric barrier were constructed. The system is powered by a variable 20 kV high voltage supply which is capable of delivering unipolar voltage pulses at frequency of 0.1-2.5 kHz and sinusoidal voltages at 6.5 kHz and above. At atmospheric pressure, the discharges exhibit either diffuse or filamentary appearance depending on parameters which include the series capacitance established by the electrodes with the dielectric barrier and varying air gap, dielectric material, and frequency of the supply voltages. This DBD system is built for the study of bacterial sterilization.

Lai, C. K.; Chin, O. H. [Plasma Research Laboratory, Physics Department, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia); Thong, K. L. [Microbiology Division, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia)

2009-07-07T23:59:59.000Z

478

Intrinsic Noise Induced Coherence Resonance in a Glow discharge Plasma  

E-Print Network [OSTI]

Experimental evidence of intrinsic noise induced coherence resonance in a glow discharge plasma is being reported. Initially the system is started at a discharge voltage (DV) where it exhibited fixed point dynamics, and then with the subsequent increase in the DV spikes were excited which were few in number and with further increase of DV the number of spikes as well as their regularity increased. The regularity in the interspike interval of the spikes is estimated using normalized variance (NV). Coherence resonance was determined using normalized variance curve and also corroborated by Hurst exponent and power spectrum plots. We show that the regularity of the excitable spikes in the floating potential fluctuation increases with the increase in the DV, upto a particular value of DV. Using a Wiener filter, we separated the noise component which was observed to increase with DV and hence conjectured that noise can be playing an important role in the generation of the coherence resonance. From an anharmonic osc...

Shaw, Pankaj Kumar; Ghosh, S; Janaki, M S; Iyengar, A N S

2014-01-01T23:59:59.000Z

479

Equilibrium analysis of tokamak discharges with toroidal variation  

SciTech Connect (OSTI)

Tokamaks provide a field structure that is almost axisymmetric around the torus axis. There are however always small toroidal variations due to the limited number of toroidal field coils, the magnetic field ripple. On the other hand, non-axisymmetric external fields are applied on purpose to ergodise the field structure close to the separatrix, to control the heat and particle transport across the plasma boundary. We present a perturbation method to calculate the magnetic field of tokamak discharges with with weak toroidal variation. The method is applied for the equilibrium reconstruction of Tore Supra discharges with toroidal ripple. The perturbation method does not rely on a flux surface representation and can therefore be applied to structures with magnetic islands. We obtain the plasma response to the field of ergodising external coils, as proposed for the ITER device.

Zwingmann, W.; Becoulet, M.; Moreau, Ph.; Nardon, E. [Ass Euratom-CEA/DSM/DRFC Cadarache, 13108 St.-Paul-Lez-Durance (France)

2006-11-30T23:59:59.000Z

480

Method and apparatus for processing exhaust gas with corona discharge  

DOE Patents [OSTI]

The present invention is placing a catalyst coating upon surfaces surrounding a volume containing corona discharge. In addition, the electrodes are coated with a robust dielectric material. Further, the electrodes are arranged so that at least a surface portion of each electrode extends into a flow path of the exhaust gas to be treated and there is only exhaust gas in the volume between each pair of electrodes. 12 figs.

Barlow, S.E.; Orlando, T.M.; Tonkyn, R.G.

1999-06-22T23:59:59.000Z

Note: This page contains sample records for the topic "intensity discharge lamps" 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

Negative ion source with hollow cathode discharge plasma  

DOE Patents [OSTI]

A negative ion source of the type where negative ions are formed by bombarding a low-work-function surface with positive ions and neutral particles from a plasma, wherein a highly ionized plasma is injected into an anode space containing the low-work-function surface. The plasma is formed by hollow cathode discharge and injected into the anode space along the magnetic field lines. Preferably, the negative ion source is of the magnetron type.

Hershcovitch, Ady (Mt. Sinai, NY); Prelec, Krsto (Setauket, NY)

1983-01-01T23:59:59.000Z

482

Sn Plasma Focus Discharge for EUV Radiation Source  

Science Journals Connector (OSTI)

A small plasma focus device was constructed for the EUV radiation experiment. The storage energy of capacitor bank is 3.4 kj and the maximum discharge current is 140 kA. Although the device was not well optimized for strong pinch EUV radiation was observed from the focus plasma. The plasma dynamics was affected by electrode material and the use of Sn electrode was proved to be effective for producing Sn plasma.

Keiichi Takasugi; Takeshi Umeda; Ena Kiuchi; Takuya Hayashi

2006-01-01T23:59:59.000Z

483

Negative ion source with hollow cathode discharge plasma  

DOE Patents [OSTI]

A negative ion source of the type where negative ions are formed by bombarding a low-work-function surface with positive ions and neutral particles from a plasma, wherein a highly ionized plasma is injected into an anode space containing the low-work-function surface is described. The plasma is formed by hollow cathode discharge and injected into the anode space along the magnetic field lines. Preferably, the negative ion source is of the magnetron type.

Hershcovitch, A.; Prelec, K.

1980-12-12T23:59:59.000Z

484

A diffusion-controlled regime of cylindrical inductive discharges  

Science Journals Connector (OSTI)

A fluid-plasma model of diffusion-controlled cylindrical inductive discharges in an argon gas is presented. The plasma-field structure of the discharge obtained is completed by the interrelated behaviour of concentrations of charged particles, electron temperature, power absorbed on average by an electron, radial distribution of the components of the high-frequency field, of the Joule heating and of the high-frequency current density in the plasma. The self-consistency of the model and its validity over a wide pressure range (p = (0.05–5)?Torr) is reached by involving detailed treatment of the electron energy balance, of the nonlinear processes in the charged particle balance and of the momentum equations. By accounting for the velocity dependence of the elastic electron–neutral collision frequency, concepts from the kinetic plasma theory are introduced in a fluid-plasma description of the discharge. The analysis of the results is in terms of changing gas pressure, power and frequency of the maintenance field. The changes of the parameters of the external coil due to the plasma loading in the coil are also discussed.

St Kolev; H Schlüter; A Shivarova; Kh Tarnev

2006-01-01T23:59:59.000Z

485

Ignition and extinction phenomena in helium micro hollow cathode discharges  

SciTech Connect (OSTI)

Micro hollow cathode discharges (MHCD) were produced using 250??m thick dielectric layer of alumina sandwiched between two nickel electrodes of 8??m thickness. A through cavity at the center of the chip was formed by laser drilling technique. MHCD with a diameter of few hundreds of micrometers allowed us to generate direct current discharges in helium at up to atmospheric pressure. A slowly varying ramped voltage generator was used to study the ignition and the extinction periods of the microdischarges. The analysis was performed by using electrical characterisation of the V-I behaviour and the measurement of He*({sup 3}S{sub 1}) metastable atoms density by tunable diode laser spectroscopy. At the ignition of the microdischarges, 2??s long current peak as high as 24?mA was observed, sometimes followed by low amplitude damped oscillations. At helium pressure above 400?Torr, an oscillatory behaviour of the discharge current was observed just before the extinction of the microdischarges. The same type of instability in the extinction period at high pressure also appeared on the density of He*({sup 3}S{sub 1}) metastable atoms, but delayed by a few ?s relative to the current oscillations. Metastable atoms thus cannot be at the origin of the generation of the observed instabilities.

Kulsreshath, M. K.; Schwaederle, L.; Dufour, T.; Lefaucheux, P.; Dussart, R. [GREMI, CNRS/Université d'Orléans (UMR7344), Orléans (France); Sadeghi, N. [LIPhy, CNRS and Universite Joseph Fourier (UMR5588), Grenoble (France); Overzet, L. J. [GREMI, CNRS/Université d'Orléans (UMR7344), Orléans (France); PSAL, UTDallas, Richardson, Texas 75080-3021 (United States)

2013-12-28T23:59:59.000Z

486

Table 22. Energy Intensity, Projected vs. Actual  

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

Energy Intensity, Projected vs. Actual" Energy Intensity, Projected vs. Actual" "Projected" " (quadrillion Btu / real GDP in billion 2005 chained dollars)" ,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011 "AEO 1994",11.24893441,11.08565002,10.98332766,10.82852279,10.67400621,10.54170176,10.39583203,10.27184573,10.14478673,10.02575883,9.910410202,9.810812106,9.69894802,9.599821783,9.486985399,9.394733753,9.303329725,9.221322623 "AEO 1995",,10.86137373,10.75116461,10.60467959,10.42268977,10.28668187,10.14461664,10.01081222,9.883759026,9.759022105,9.627404949,9.513643295,9.400418762,9.311729546,9.226142899,9.147374752,9.071102491,8.99599906 "AEO 1996",,,10.71047701,10.59846153,10.43655044,10.27812088,10.12746866,9.9694713,9.824165152,9.714832565,9.621874334,9.532324916,9.428169355,9.32931308,9.232716414,9.170931044,9.086870061,9.019963901,8.945602337

487

Efficiency and Intensity in the AEO 2010  

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

Session 9 Session 9 Energy Efficiency: Measuring Gains and Quantifying Opportunities April 7, 2010 2010 Energy Conference Washington, DC Steve Wade, Economist Efficiency and Intensity in the AEO 2010 Steve Wade, 2010 Energy Conference, April 7, 2010 2 * What are the sources of efficiency in the AEO 2010? * What is the contribution of energy efficiency to projected U.S. energy intensity? * How do AEO scenarios relate to technical potential? Overview Steve Wade, 2010 Energy Conference, April 7, 2010 3 * Technology - Stock turnover - Progress and learning * Mandates - CAFÉ, efficiency standards (NAECA, EPACT), building codes... - Renewable fuel standards * Incentives - Tax credits, loan guarantees, grants, ...  Energy efficiency and renewables - ACESA, ARRA (stimulus bill) ...  Investment tax credits

488

How intense quality control improves hydraulic fracturing  

SciTech Connect (OSTI)

Not unlike the subject of Forced Closure, Intense Quality Control is probably misnamed. What actually is discussed in this article is pilot testing of the fracturing fluids actually pumped at in-situ conditions of temperature and shear. Presented here is development of the need for onsite testing, equipment used, shear and viscosity curves from several jobs showing what went wrong that would otherwise not have been known, and a discussion of borate gel fluids.

Ely, J.W. [Ely and Associates, Inc., Houston, TX (United States)

1996-11-01T23:59:59.000Z

489

Intensive Variables & Nanostructuring in Magnetostructural Materials  

SciTech Connect (OSTI)

Over the course of this project, fundamental inquiry was carried out to investigate, understand and predict the effects of intensive variables, including the structural scale, on magnetostructural phase transitions in the model system of equiatomic FeRh. These transitions comprise simultaneous magnetic and structural phase changes that have their origins in very strong orbital-lattice coupling and thus may be driven by a plurality of effects.

Lewis, Laura

2014-08-13T23:59:59.000Z

490

Correlated-Intensity velocimeter for Arbitrary Reflector  

DOE Patents [OSTI]

A velocimetry apparatus and method comprising splitting incoming reflected laser light and directing the laser light into first and second arms, filtering the laser light with passband filters in the first and second arms, one having a positive passband slope and the other having a negative passband slope, and detecting the filtered laser light via light intensity detectors following the passband filters in the first and second arms

Wang, Zhehui (Los Alamos, NM); Luo, Shengnian (Los Alamos, NM); Barnes, Cris W. (Arlington, VA); Paul, Stephen F. (West Orange, NJ)

2008-11-11T23:59:59.000Z

491

Power balance in ELMO Bumpy Torus: bulk electrons and ions in a 37 kW discharge  

SciTech Connect (OSTI)

The power balance of the bulk electrons and ions in discharges with 37 kW of applied microwave power in the ELMO Bumpy Torus (EBT) is examined in a zero-dimensional model using data on the intensity and linewidth of the molecular and atomic hydrogen emission. At least 60% of the applied power is ultimately dissipated by processes involving the neutral particles, including dissociation of molecules, ionization of and radiation from atoms, and heating of cold electrons produced during atomic ionization. The molecular influx rate and the density of atoms are used independently to determine the bulk electron particle confinement time, and an upper bound estimate is made of the diffusional power loss from the bulk plasma electrons. Parameters derived from the basic spectroscopic data presented in this paper include the neutral atom density 2 - 5x10/sup 10/ cm/sup -3/, incident molecular flux 3 - 5x10/sup 15/ cm/sup -2/s/sup -1/, bulk ion temperature approx. =3 eV, and particle confinement time <1.1 ms. The bulk electron energy confinement time is 0.7 ms or less in the standard operating regime. Published data on the nonthermal electron and ion populations in the plasma are used to evaluate approximately the overall energy flow in the discharge. 54 refs.

McNeill, D.H.

1985-10-01T23:59:59.000Z

492

GRR/Section 14-UT-b - Utah Pollutant Discharge Elimination System | Open  

Open Energy Info (EERE)

GRR/Section 14-UT-b - Utah Pollutant Discharge Elimination System GRR/Section 14-UT-b - Utah Pollutant Discharge Elimination System < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 14-UT-b - Utah Pollutant Discharge Elimination System 14UTBUtahPollutantDischargeEliminationSystemPermit.pdf Click to View Fullscreen Contact Agencies Utah Division of Water Quality Utah Department of Environmental Quality United States Environmental Protection Agency Regulations & Policies R317-2-3 Antidegradation Policy R317-8 Utah Pollutant Discharge Elimination System (UPDES) Triggers None specified Click "Edit With Form" above to add content 14UTBUtahPollutantDischargeEliminationSystemPermit.pdf 14UTBUtahPollutantDischargeEliminationSystemPermit.pdf Error creating thumbnail: Page number not in range.

493

ORNL DAAC GLOBAL RIVER DISCHARGE, 1807-1991, V. 1.1 (RIVDIS)  

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

Data > Regional/Global > River Discharge (RIVDIS) > Guide Data > Regional/Global > River Discharge (RIVDIS) > Guide Document GLOBAL RIVER DISCHARGE, 1807-1991, V. 1.1 (RIVDIS) Get Data Global River Discharge, 1807-1991, V. 1.1 (RivDIS) Summary: The Global Monthly River Discharge Data Set contains monthly averaged discharge measurements for 1018 stations located throughout the world. The period of record varies widely from station to station with a mean of 21.5 years. The data are derived from the published UNESCO archives for river discharge and checked against information obtained from the Global Runoff Center in Koblenz, Germany, through the U.S. National Geophysical Data Center in Boulder, Colorado. Citation: Cite this data set as follows (citation revised on September 20, 2002): Vorosmarty, C. J., B. M. Fekete, and B. A. Tucker. 1998. Global River

494

Appliance Standard Program - The FY 2003 Priority -Setting Summary Report and Actions Proposed - Appendix B  

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

APPENDIX B: APPENDIX B: Data Sheets for Existing Products Table of Contents Product Rulemaking Priority Page Product Rulemaking Priority Page Commercial Air-Cooled Central A/C & Air-Source HP, 65-240 kBtu/h Standards High B-1 High Intensity Discharge Lamps Determination High B-27 Central A/C & HP, 3 phase, < 65 kBtu/h Standards Medium B-2 Test Procedure Low B-28 Clothes Dryers Standards Low B-3 Lamps, Fluorescent Standards Low B-29 Test Procedure Low B-4 Test Procedure Low B-30 Clothes Washers Standards* Low B-5 Lamps, Incandescent General Service Standards Low B-31 Test Procedure* Low B-6 Test Procedure Low B-32 Commercial Water-Cooled A/C & Water- Source Heat Pumps Standards Low B-7 Lamps, Incandescent Reflector Standards Low B-33

495

Appliance Standard Program - The FY 2003 Priority -Setting Summary Report and Actions Proposed - Appendix B  

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

APPENDIX B: APPENDIX B: Data Sheets for Existing Products Table of Contents Product Rulemaking Priority Page Product Rulemaking Priority Page Commercial Air-Cooled Central A/C & Air-Source HP, 65-240 kBtu/h Standards High B-1 High Intensity Discharge Lamps Determination High B-27 Central A/C & HP, 3 phase, < 65 kBtu/h Standards Medium B-2 Test Procedure Low B-28 Clothes Dryers Standards Low B-3 Lamps, Fluorescent Standards Low B-29 Test Procedure Low B-4 Test Procedure Low B-30 Clothes Washers Standards* Low B-5 Lamps, Incandescent General Service Standards Low B-31 Test Procedure* Low B-6 Test Procedure Low B-32 Commercial Water-Cooled A/C & Water- Source Heat Pumps Standards Low B-7 Lamps, Incandescent Reflector Standards Low B-33

496

Sampling spectral-line intensity and width meter  

SciTech Connect (OSTI)

This paper presents a method and apparatus for measuring the spectral line widths of hollow cathode lamps operating in the pulse mode. For simplicity, the increment in spectral line width with transition from stationary to pulse conditions is measured. The minimum and maximum light-pulse durations are 10 usec and 1 usec. A block diagram of the apparatus is shown. Recordings of the resonance lines of Yb and Ge of LT-2 lamps for current pulses of 100 mA with an off-duty factor of 5 for 400 usec are shown. The standard line widths corresponded to 20 mA for Yb and 30 mA for Ge. In the first and second cases, the line widths were changed by factors of 1.14 and 1.6 during the current pulse. It is not advisable to use a current-pulse duration of more than 100 usec for the indicated amplitude and off-duty factor.

Kureichik, K.P.; Khomyak, A.S.; Kozlovskii, N.V.

1986-06-01T23:59:59.000Z

497

COMMENTS ON THE SEARCH FOR ELECTROSTATIC DISCHARGES ON MARS  

SciTech Connect (OSTI)

Ruf et al. used the Deep Space Network (DSN) to search for the emission of non-thermal radiation by martian dust storms, theoretically predicted by Renno et al. They detected the emission of non-thermal radiation that they were searching for, but were surprised that it contained spectral peaks suggesting modulation at various frequencies and their harmonics. Ruf et al. hypothesized that the emission of non-thermal radiation was caused by electric discharges in a deep convective dust storm, modulated by Schumann resonances (SRs). Anderson et al. used the Allen Telescope Array (ATA) to search for similar emissions. They stated that they found only radio frequency interference (RFI) during their search for non-thermal emission by martian dust storms and implicitly suggested that the signal detected by Ruf et al. was also RFI. However, their search was not conducted during the dust storm season when deep convective storms are most likely to occur. Here, we show that the ubiquitous dust devils and small-scale dust storms that were instead likely present during their observations are too shallow to excite SRs and produce the signals detected by Ruf et al. We also show that the spectral and temporal behavior of the signals detected by Anderson et al. corroborates the idea that they originated from man-made pulse-modulated telecommunication signals rather than martian electric discharges. In contrast, an identical presentation of the signals detected by Ruf et al. demonstrates that they do not resemble man-made signals. The presentation indicates that the DSN signals were consistent with modulation by martian SRs, as originally hypothesized by Ruf et al. We propose that a more comprehensive search for electrostatic discharges be conducted with either the ATA or DSN during a future martian dust storm season to test the hypothesis proposed by Ruf et al.

Renno, Nilton O.; Ruf, Christopher S., E-mail: renno@alum.mit.edu [Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI (United States)

2012-12-20T23:59:59.000Z

498

Ethanol reforming in non-equilibrium plasma of glow discharge  

E-Print Network [OSTI]

The results of a detailed kinetic study of the main plasma chemical processes in non-equilibrium ethanol/argon plasma are presented. It is shown that at the beginning of the discharge the molecular hydrogen is mainly generated in the reaction of ethanol H-abstraction. Later hydrogen is formed from active H, CH2OH and CH3CHOH and formaldehyde. Comparison with experimental data has shown that the used kinetic mechanism predicts well the concentrations of main species at the reactor outlet.

Levko, D

2012-01-01T23:59:59.000Z

499

High-Density Discharges in the Alcator Tokamak  

Science Journals Connector (OSTI)

Peak plasma densities in excess of 1015 cm-3 have been obtained in the Alcator tokamak with 60<~BT<85 kG. The highest average density so far achieved is n¯e=6×1014 cm-3; the corresponding n0?E=2×1013 cm-3 s. These ultrahigh-density discharges exhibit (i) nearly complete energy equilibration between electrons and ions, (ii) severe attenuation of energetic-neutral-particle fluxes, (iii) a minor role of impurities, and (iv) energy-confinement properties consistent with neoclassical estimates.

M. Gaudreau; A. Gondhalekar; M. H. Hughes; D. Overskei; D. S. Pappas; R. R. Parker; S. M. Wolfe; E. Apgar; H. I. Helava; I. H. Hutchinson; E. S. Marmar; K. Molvig

1977-11-14T23:59:59.000Z

500

Flow shaping using three-dimensional microscale gas discharge  

SciTech Connect (OSTI)

We introduce a flow shaping mechanism using surface compliant microscale gas discharge. A three-dimensional finite element-based multiscale ionized gas flow code is utilized to analyze charge separation, potential distribution, and flow inducement mechanism. For the case of quiescent flow, a horseshoe-shaped plasma generator is introduced. Due to its unusual shape, the three-dimensional electric force excites a pinching effect on the fluid inside selectively powered electrode arc. Such effect is capable of tripping the flow-ejecting fluid normal to the plane of the actuator and thus can be very useful for many applications.

Wang, C.-C.; Roy, Subrata [Department of Mechanical and Aerospace Engineering, Computational Plasma Dynamics Laboratory and Test Facility, University of Florida, Gainesville, Florida 32611-6300 (United States)

2009-08-24T23:59:59.000Z