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Note: This page contains sample records for the topic "flow orifice devices" from the National Library of EnergyBeta (NLEBeta).
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1

Gas flow characterization of restrictive flow orifice devices  

SciTech Connect

A restrictive flow orifice (RFO) can be used to limit the uncontrolled release of system media upon component or line failure in a gas handling system and can thereby enhance the system safety. This report describes a new RFO product available from the Swagelok Companies and specifies the gas flow characteristics of this device. A family of four different sizes of RFO devices is documented.

Shrouf, R.G. [Sandia National Labs., Albuquerque, NM (United States). Safety Engineering Dept.; Page, S.R. [Albuquerque Valve and Fitting Co., NM (United States)

1997-07-01T23:59:59.000Z

2

A slotted orifice plate used as a flow measurement device  

E-Print Network (OSTI)

The standard orifice plate is used extensively by the natural gas industry for the metering of fuel. Because of the costs associated with errors in flow measurement inherent with the use of a standard orifice plate, any improvements upon...

Macek, Michael Lee

2012-06-07T23:59:59.000Z

3

Pressure and flow characteristics of restrictive flow orifice devices.  

SciTech Connect

A Restrictive Flow Orifice (RFO) can be used to enhance the safe design of a pressure system in several ways. Pressure systems frequently incorporate a regulator and relief valve to protect the downstream equipment from accidental overpressure caused by regulator failure. Analysis frequently shows that in cases of high-flow regulator failure, the downstream pressure may rise significantly above the set pressure of the relief valve. This is due to limited flow capacity of the relief valve. A different regulator or relief valve may need to be selected. A more economical solution to this problem is to use an RFO to limit the maximum system flow to acceptable limits within the flow capacity of the relief valve, thereby enhancing the overpressure protection of laboratory equipment. An RFO can also be used to limit the uncontrolled release of system fluid (gas or liquid) upon component or line failure. As an example, potential asphyxiation hazards resultant from the release of large volumes of inert gas from a 'house' nitrogen system can be controlled by the use of an RFO. This report describes a versatile new Sandia-designed RFO available from the Swagelok Company and specifies the gas flow characteristics of this device. Two sizes, 0.010 and 0.020 inch diameter RFOs are available. These sizes will allow enhanced safety for many common applications. This new RFO design are now commercially available and provide advantages over existing RFOs: a high pressure rating (6600 psig); flow through the RFO is equal for either forward or reverse directions; they minimize the potential for leakage by incorporating the highest quality threaded connections; and can enhance the safety of pressure systems.

Shrouf, Roger D.

2003-06-01T23:59:59.000Z

4

Orifice flow measurement uncertainty  

SciTech Connect

A computer program is now available from Union Carbide that evaluates the total flow uncertainty of orifice flowmeter systems. Tolerance values for every component in the system and the sensitivity of the measured flowrate to each component can be established using historical data and published hardware specifications. Knowing the tolerance and sensitivity values, a total measurement uncertainty can be estimated with a 95% confidence level. This computer program provides a powerful design tool to ensure correct component matching and total metering system optimization.

Samples, C.R.

1984-04-01T23:59:59.000Z

5

Theoretical uncertainty of orifice flow measurement  

SciTech Connect

Orifice meters are the most common meters used for fluid flow measurement, especially for measuring hydrocarbons. Meters are rugged, mechanically simple, and well suited for field use under extreme weather conditions. Because of their long history of use and dominance in the fluid flow measurement, their designs, installation requirements, and equations for flow rate calculation have been standardized by different organizations in the United States and internationally. These standards provide the guideline for the users to achieve accurate flow measurement. and minimize measurement uncertainty. This paper discusses different factors that contribute to the measurement inaccuracy and provide an awareness to minimize or eliminate these errors. Many factors which influence the overall measurement uncertainty are associated with the orifice meter application. Major contributors to measurement uncertainty include the predictability of flow profile, fluid properties at flowing condition, precision of empirical equation for discharge coefficient, manufacturing tolerances in meter components, and the uncertainty associated with secondary devices monitoring the static line pressure, differential pressure across the orifice plate, flowing temperature, etc. Major factors contributing to the measurement uncertainty for a thin, concentric, square-edged orifice flowmeter are as follows: (a) Tolerances in prediction of coefficient of discharge, (b) Predictability in defining the physical properties of the flowing fluid, (c) Fluid flow condition, (d) Construction tolerances in meter components, (e) Uncertainty of secondary devices/instrumentation, and (f) Data reduction and computation. Different factors under each of the above areas are discussed with precautionary measures and installation procedures to minimize or eliminate measurement uncertainty.

Husain, Z.D. [Daniel Flow Products, Inc., Houston, TX (United States)

1995-12-01T23:59:59.000Z

6

New flow equation for orifices  

SciTech Connect

Orifices have been used to measure flowrate for thousands of years, but economic pressures recently have dictated a careful evaluation of the procedure. The National Bureau of Standards currently has two major research programs (funded by API and GRI) underway with the goals of increasing the accuracy and range of orifice measurements. The equations presented in this work represent a significant departure from those normally used. The new expressions are equally rigorous and possess many advantages compared with the conventional relationships.

Hall, K.R.; Eubank, P.T.; Holste, J.C.

1984-06-01T23:59:59.000Z

7

The flow of water through small orifices  

E-Print Network (OSTI)

, tend to in- dicate that any of these orif'ices (1/d ranging from 1. 61 to 6. 5) could have been individually calibrated and used with a high degree of accuracy for metering purposes in a range below the transition region. It has previously been... postu- lated that orii'ices of these proportions could not, even with individual calibration, be used with confidence oi' accuracy. The tests on orifices having various degrees of rough- ness at the entrance, tend to indicate tha. slight differences...

Lock, Jack Allen

2012-06-07T23:59:59.000Z

8

Recent developments in orifice meter and flow conditioner research  

SciTech Connect

In 1969 concerns were raised regarding the validity of the orifice meter`s coefficient of discharge uncertainty. An effort to resolve these concerns resulted in an internationally supported research project which produced a new sharp-edged concentric orifice meter empirical database and coefficient of discharge equation. However, the new empirical database and coefficient of discharge equation did not account for all of the differences being encountered in orifice metering. And in 1986, as a derivative of the coefficient of discharge equation research, questions were raised regarding the influences of installation effects on the orifice meter`s coefficient of discharge. The 1986 EC research data indicated that the flow conditioner and straight pipe installation requirements of the flow measurement standards were inadequate to prevent biasing of the orifice meter`s coefficient of discharge by flow disturbances generated from upstream piping elements. Data generated from 1990 through 1993 by GRI sponsored SWRI and NIST research confirmed the original EC biasing and further identified differential pressure tap radial position sensitivity and velocity profile and swirl angle theory deficiencies. Current research is continuing to define installation effects influences and identify possible solutions.

LaNasa, P.J. [CPL and Associates, Houston, TX (United States)

1995-12-31T23:59:59.000Z

9

Advanced computational simulation of flow phenomena associated with orifice meters  

SciTech Connect

This paper presents and discusses results from a series of computational fluid dynamics (CFD) simulations of fluid flow phenomena associated with orifice meters. These simulations were performed using a new, state-of-the-art CFD code developed at Southwest Research Institute. This code is based on new techniques designed to take advantage of parallel computers to increase computational performance and fidelity of simulation results. This algorithm uses a domain decomposition strategy to create grid systems for very complex geometries composed of simpler geometric subregions, allowing for the accurate representation of the fluid flow domain. The domain decomposition technique maps naturally to parallel computer architectures. Here, the concept of message-passing is used to create a parallel algorithm, using the Parallel Virtual Machine (PVM) library. This code is then used to simulate the flow through an orifice meter run consisting of an orifice with a beta ratio of 0.5 and air flowing at a Reynolds number of 91,100. The work discussed in this paper is but the first step in developing a Virtual Metering Research Facility to support research, analysis, and formulation of new standards for metering.

Freitas, C.J. [Southwest Research Inst., San Antonio, TX (United States)

1995-12-31T23:59:59.000Z

10

Evaluation of a slotted orifice plate flow meter using horizontal two phase flow  

E-Print Network (OSTI)

of MASTER OF SCIENCE December 2000 Major Subject: Mechanical Engineering EVALUATION OF A SLOTTED ORIFICE PLATE FLOW METER USING HORIZONTAL TWO PHASE FLOW A Thesis by ANITA ELENA FLORES Submitted to Texas A&M University in partial fulfillment...: Mechanical Engineering ABSTRACT Fvaluation of a Slotted Orifice Plate Flow Meter Using Horizontal Two Phase Flow. (December 2000) Anita Elena Flores, B. S. , Texas A&M I Jniversitv Chair of Advisory Committee: Dr. Herald L. Morrison In the past several...

Flores, Anita Elena

2012-06-07T23:59:59.000Z

11

A study of the coherent structures and installation effects in an orifice flow meter  

E-Print Network (OSTI)

. Errors on the order of approximately 250 millions of dollar per year have been estimated for the natural gas industry. The urgent need to improve the accuracy has fueled basic research in the area of orifice flow meters. The objectives of this present... study were to analyze the coherent structures present in an orifice flow meter, and to examine the effect of a flow conditioner placed upstream of the orifice plate on the flow meter's accuracy, The coherent structures were measured by performing...

Pattabhi, Srikanth

2012-06-07T23:59:59.000Z

12

Two-phase flow characteristics in multiple orifice valves  

SciTech Connect

This work presents an experimental investigation on the characteristics of two-phase flow through multiple orifice valve (MOV), including frictional pressure drop and void fraction. Experiments were carried out using an MOV with three different sets of discs with throat thickness-diameter ratios (s/d) of 1.41, 1.66 and 2.21. Tests were run with air and water flow rates ranging between 1.0 and 3.0 m{sup 3}/h, respectively. The two-phase flow patterns established for the experiment were bubbly and slug. Two-phase frictional multipliers, frictional pressure drop and void fraction were analyzed. The determined two-phase multipliers were compared against existing correlations for gas-liquid flows. None of the correlations tested proved capable of predicting the experimental results. The large discrepancy between predicted and measured values points at the role played by valve throat geometry and thickness-diameter ratio in the hydrodynamics of two-phase flow through MOVs. A modification to the constants in the two-phase multiplier equation used for pipe flow fitted the experimental data. A comparison between computed frictional pressure drop, calculated with the modified two-phase multiplier equation and measured pressure drop yielded better agreement, with less than 20% error. (author)

Alimonti, Claudio [Sapienza University of Rome, Department ICMA, Via Eudossiana 18, 00184 Roma (Italy); Falcone, Gioia; Bello, Oladele [The Harold Vance Department of Petroleum Engineering, Texas A and M University, 3116 TAMU, Richardson Building, College Station, TX 77843 (United States)

2010-11-15T23:59:59.000Z

13

Automatic coolant flow control device for a nuclear reactor assembly  

DOE Patents (OSTI)

A device which controls coolant flow through a nuclear reactor assembly comprises a baffle means at the exit end of said assembly having a plurality of orifices, and a bimetallic member in operative relation to the baffle means such that at increased temperatures said bimetallic member deforms to unblock some of said orifices and allow increased coolant flow therethrough.

Hutter, Ernest (Wilmette, IL)

1986-01-01T23:59:59.000Z

14

Automatic coolant flow control device for a nuclear reactor assembly  

DOE Patents (OSTI)

A device which controls coolant flow through a nuclear reactor assembly comprises a baffle means at the exit end of said assembly having a plurality of orifices, and a bimetallic member in operative relation to the baffle means such that at increased temperatures said bimetallic member deforms to unblock some of said orifices and allow increased coolant flow therethrough.

Hutter, E.

1984-01-27T23:59:59.000Z

15

A field example of a gas orifice meter with debris-ridden liquid in mist flow  

SciTech Connect

A field example of debris-ridden liquids in an orifice meter is presented in this paper. Flow conditions in gas pipelines containing hydrocarbon liquids and particulate matter are discussed. Known effects on measurement of the presence of these materials in orifice meters is presented. By definition, gas measurement is accurate if performed on a clean and dry flow stream. This paper demonstrates the importance of removing as much liquid and debris as possible prior to measurement.

Chisholm, J.L.; Mooney, C.V. [Texas A and M Univ., Kingsville, TX (United States); Datta-Barua, L.; Feldmann, R.J.

1995-12-31T23:59:59.000Z

16

Numerical study of the effects of upstream flow condition upon orifice flow meter performance  

SciTech Connect

Recent experimental work has shown that when the mean velocity profile upstream of an orifice plate has a deficit on the centerline and higher velocities at the outer edges of the pipe, the pressure drop across the orifice is greater than if the flow upstream is fully developed. It is proposed that this increase in [Delta]P is directly correlated with the radial distribution of momentum upstream of the orifice plate. In an effort to investigate how the upstream flow condition affects the pressure distribution along the pipe wall and to determine if the hypothesis is correct, Creare.X Inc. 's FLUENT numerical analysis program was used to simulate the effects. Two [beta] ratios (0.50 and 0.75) have been considered with various mean velocity inlet profiles. Inlet profiles include the 1/16th, 1/7th, 1/8th, 1/9th and 1/10th power law power law, uniform flow, and two linear distributions. The results indicate that there is a correlation between the second and third-order moments of momentum and the value of the discharge coefficient. This empirical correlation, after being fully verified by experimental data, can be used to estimate the change in the coefficient of discharge given the inlet velocity profile.

Morrison, G.L.; Panak, D.L.; DeOtte, R.E. Jr. (Texas A and M Univ., College Station, TX (United States). Mechanical Engineering Dept.)

1993-11-01T23:59:59.000Z

17

Results mixed from pulsating flow tests of orifice-plate meters  

SciTech Connect

This paper reports that laboratory tests on several commercially available orifice-plate meters for use in pulsating flow indicate that none yields acceptable accuracy. These tests suggested, however, that if the objective of monitoring pulsating flow is to indicate or quantify pulsation magnitudes for comparisons, then at least two instruments are acceptable. Use of such meters, particularly in low flow rate gathering systems, can be a viable alternative to attempting to reduce the intensity (amplitude and frequency) of pulsation by expensive installation and maintenance of chokes and bottles. Phillips Petroleum Co. set out to find a meter that would be sensitive enough to measure pulsating hydrocarbon flows with acceptable accuracy using the orifice plate. Several orifice measurement systems were simultaneously investigated at the Southwest Research Institute, San Antonio (SwRI).

Arasi, J.A. (Phillips Petroleum Co., Tananger (Norway))

1992-10-05T23:59:59.000Z

18

Two-Phase Flow of Two HFC Refrigerant Mixtures Through Short Tube Orifices, Draft Final Report  

E-Print Network (OSTI)

The present study presents data for flow of two refrigerant mixtures through short tube orifices. The two mixtures were R3211251134a (23%/25%/52% on a mass percentage basis) and R321125 (50%/50%). The following presents results for the flow...

Payne, W. V.; O'Neal, D. L.

1994-01-01T23:59:59.000Z

19

Two-Phase Flow of HCFC-22 and HFC-134a through Short Tube Orifices  

E-Print Network (OSTI)

HCFC-22 and HFC-134a were used with short tube orifices having length to diameter ratios ranging from 5 to 20 in a 9.53 mm (3/8 in.) refrigerant line to investigate both two-phase and subcooled liquid flow entering the short tubes. Flow temperature...

Yongchan, K.

2008-01-23T23:59:59.000Z

20

3rd International symposium on fluid flow measurement effects of acoustic noise on orifice meters  

SciTech Connect

It is known that in-pipe acoustic noise can cause errors in orifice plate metering. The international metering community voted this topic as the highest priority for further research during a {open_quotes}working{close_quotes} held at N.T.I.S. in 1983. Most published work to date has been concerned with periodic, low frequency noise or pulsations, as encountered on reciprocating compressor installations where errors or their side effects may be readily noticed. Many orifice metering locations are, however, subject to high frequency noise emanating from control valves and centrifugal compressors. High frequency in-pipe noise is seldom suspected as a source of metering error and consequently it is a neglected topic. Square root error, which stems form the non-linear flow-differential pressure relationship of an orifice plate, has been well researched for low frequencies but the work has not been extended to high frequencies. To investigate this topic, high pressure studies at the British Gas Bishop Auckland Test Facility were carried out with a noise source (a pressure drop across a ball valve) and a 600 mm 0.4 {beta} orifice meter. These studies identified the effect of high frequency acoustic noise on orifice plate accuracy.

Norman, R.; Graham, P.; Drew, W.A. [Engineering Research Station, Newcastle Upon Tyne (United Kingdom)

1995-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Mass flow characteristics of R-407C through short-tube orifices  

SciTech Connect

The mass flow characteristics of the R-22 replacement refrigerant R-407C were measured for multiphase flow through sharp-edged short-tube orifices with length-to-diameter ratios from 6.5 to 23.2. All test conditions were a combination of condensing temperatures ranging from 35.0 C (95 F) to 51.7 C (125 F) and evaporating temperatures ranging from {minus}1.1 C (30 F) to 10 C (50 F). Short-tube orifices 12.70 mm (0.5 in.), 19.05 mm (0.75 in.), and 25.4 mm (1.0 in.) in length with diameters ranging from 1.09 mm (0.0432 in.) to 1.94 mm (0.0763 in.) were tested. The effects of downstream pressure, upstream subcooling/quality, upstream pressure, diameter, and length on the mass flow rate of refrigerant through a given orifice geometry were presented. The R-407C data were fit to a semi-empirical model developed previously. The accuracy of the model was also discussed.

Payne, W.V. [National Inst. of Standards and Technology, Gaithersburg, MD (United States); O`Neal, D.L. [Texas A and M Univ., College Station, TX (United States). Dept. of Mechanical Engineering

1998-10-01T23:59:59.000Z

22

Predicting the pressure driven flow of gases through micro-capillaries and micro-orifices  

SciTech Connect

A large body of experimentally measured gas flow rates were obtained from the literature and then compared to the predictions obtained with constitutive flow equations. This was done to determine whether the equations apply to the predictions of gas flow rates from leaking containment vessels used to transport radioactive materials. The experiments consisted of measuring the volumetric pressure-driven flow of gases through micro-capillaries and micro-orifices. The experimental results were compared to the predictions obtained with the equations given in ANSI N14.5 the American National Standard for Radioactive Materials-Leakage Tests on Package for Shipment. The equations were applied to both (1) the data set according to the recommendations given in ANSI N14.5 and (2) globally to the complete data set. It was found that: The continuum and molecular flow equation provided good agreement between the experimental and calculated flow rates for flow rates less than about 1 atm{center_dot}cm{sup 3}/s. The choked flow equation resulted in over-prediction of the flow rates for flow rates less than about 1 atm-cm{sup 3}/s. For flow rates higher than 1 atm{center_dot}cm{sup 3}/s, the molecular and continuum flow equation over-predicted the measured flow rates and the predictions obtained with the choked flow equation agreed well with the experimental values. Since the flow rates of interest for packages used to transport radioactive materials are almost always less than 1 atm{center_dot}cm{sup 3}/s, it is suggested that the continuum and molecular flow equation be used for gas flow rate predictions related to these applications.

Anderson, B.L.; Carlson, R.W.; Fischer, L.E. [Lawrence Livermore National Lab., CA (United States)

1994-11-01T23:59:59.000Z

23

Prediction of flow rates through an orifice at pressures corresponding to the transition between molecular and isentropic flow  

SciTech Connect

A model of compressible flow through an orifice, in the region of transition from free molecular to isentropic expansion flow, has been developed and tested for accuracy. The transitional or slip regime is defined as the conditions where molecular interactions are too many for free molecular flow modeling, yet not great enough for isentropic expansion flow modeling. Due to a lack of literature establishing a well-accepted model for predicting transitional flow, it was felt such work would be beneficial. The model is nonlinear and cannot be satisfactorily linearized for a linear regression analysis. Consequently, a computer routine was developed which minimized the sum of the squares of the residual flow for the nonlinear model. The results indicate an average accuracy within 15% of the measured flow throughout the range of test conditions. Furthermore, the results of the regression analysis indicate that the transitional regime lies between Knudsen numbers of approximately 2 and 45. 4 refs., 3 figs., 1 tab.

DeMuth, S.F.; Watson, J.S.

1985-01-01T23:59:59.000Z

24

Pulsation effects on orifice measurement  

SciTech Connect

The natural gas transmission industry has historically relied on the orifice as the contractual standard for custody transfer. The simplicity, reliability, low maintenance, rangeability (afforded by changing plate beta ratios) and repeatability of the orifice, together with reliable secondary systems, has dispelled flow measurement replacement attempts. While an influx of other meter types has occurred in recent years, the dominance of orifice meters dictate that any serious attempt at improved gas measurement accuracy must emphasize all phases of orifice meter installation. This paper reports on unsteady flow (pulsation) which can compromise orifice system accuracy. Instruments and error calculations for pulsation are reviewed.

Doelling, C. (Pipeline and Compressor Research Council, Tulsa, OK (US))

1992-02-01T23:59:59.000Z

25

Effects of geometric scaling on static pressure measurements in orifice flow-meters  

E-Print Network (OSTI)

. (Mech) University of Mysore, India Chair of Advisory Committee: Dr. G. L. Morrison It is estimated that there are over one million orifice meters in operation today in the United States of America. . The accuracy of these meters.... It is estimated that there are over one million orifice meters in operation today in the United States of America. The accuracy of these meters is such that uncertainties of millions of dollars a year result from their use [1]. The basic idea employed...

Sarker, Arunava

2012-06-07T23:59:59.000Z

26

3-D laser Doppler velocimetry study of incompressible flow through an orifice plate  

E-Print Network (OSTI)

of Advisory Committee: Dr. Gerald Morrison Orifice meters are used extensively in the U. S. for the measurement of natural gas. Uncertainty of metering accuracy has resulted in an estimated 250 million dollars annually in mis-charges. This has led... to the need for basic research on orifice meters in an attempt to improve the accuracy of existing metering facilities. The objective of this present study was to use a 3-D LDV (laser Doppler velocimeter) to obtain detailed velocity and turbulence...

Panak, David Leo

2012-06-07T23:59:59.000Z

27

DNS on turbulent heat transfer of viscoelastic fluid flow in a plane channel with transverse rectangular orifices  

Science Journals Connector (OSTI)

Heat-transfer characteristics of a viscoelastic turbulence past rectangular orifices were investigated in the context of the reduction effects of fluid elasticity on drag and heat transfer. To simulate the fully-developed channel flow through transverse orifices located periodically at intervals of 6.4 times channel height, we imposed periodic conditions at the upstream and downstream boundaries. To discuss the dissimilarity between the velocity and thermal fields, the molecular Prandtl number was set to be 1.0 and any temperature dependence of the fluid and rheological properties was not considered. In the present condition, the ratio of the reduction rates in drag and heat transfer was found to be 2.8:1.0, revealing that the present flow configuration is better than a smooth channel for avoiding the heat-transfer reduction. This phenomenon was attributed to the sustainment of the quasi-streamwise vortex downstream of the reattachment point despite the absence of strong spanwise vortices emanating from the orifice edge in the viscoelastic fluid. The longitudinal vortices behind the reattachment point caused a high turbulent heat flux and increased the local Nusselt number.

Takahiro Tsukahara; Tomohiro Kawase; Yasuo Kawaguchi

2013-01-01T23:59:59.000Z

28

Fluid flow monitoring device  

DOE Patents (OSTI)

A flow meter and temperature measuring device are described comprising a tube with a body centered therein for restricting flow and a sleeve at the upper end of the tube to carry several channels formed longitudinally in the sleeve to the appropriate axial location where they penetrate the tube to allow pressure measurements and temperature measurements with thermocouples. The high pressure measurement is made using a channel penetrating the tube away from the body and the low pressure measurement is made at a location at the widest part of the body. An end plug seals the end of the device and holes at its upper end allow fluid to pass from the interior of the tube into a plenum. The channels are made by cutting grooves in the sleeve, the grooves widened at the surface of the sleeve and then a strip of sleeve material is welded to the grooves closing the channels. Preferably the sleeve is packed with powdered graphite before cutting the grooves and welding the strips. 7 figures.

McKay, M.D.; Sweeney, C.E.; Spangler, B.S. Jr.

1993-11-30T23:59:59.000Z

29

Fluid flow monitoring device  

DOE Patents (OSTI)

A flow meter and temperature measuring device comprising a tube with a body centered therein for restricting flow and a sleeve at the upper end of the tube to carry several channels formed longitudinally in the sleeve to the appropriate axial location where they penetrate the tube to allow pressure measurements and temperature measurements with thermocouples. The high pressure measurement is made using a channel penetrating the tube away from the body and the low pressure measurement is made at a location at the widest part of the body. An end plug seals the end of the device and holes at its upper end allow fluid to pass from the interior of the tube into a plenum. The channels are made by cutting grooves in the sleeve, the grooves widened at the surface of the sleeve and then a strip of sleeve material is welded to the grooves closing the channels. Preferably the sleeve is packed with powdered graphite before cutting the grooves and welding the strips.

McKay, Mark D. (1426 Socastee Dr., North Augusta, SC 29841); Sweeney, Chad E. (3600 Westhampton Dr., Martinez, GA 30907-3036); Spangler, Jr., B. Samuel (2715 Margate Dr., Augusta, GA 30909)

1993-01-01T23:59:59.000Z

30

Evaluation of a Close Coupled Slotted Orifice, Electrical Impedance, and Swirl Flow Meters for Multiphase Flow  

E-Print Network (OSTI)

homogenized flow for several pipe diameters downstream of the plate. This characteristic provides a homogeneous mixture at the inlet of the swirl meter, and impedance probe for gas volume fraction measurement (GVF). In order to evaluate the performance...

Cevik, Muhammet

2013-09-11T23:59:59.000Z

31

AN ASSESSMENT OF THE ACCURACY OF MAGENTIC RESONANCE PHASE VELOCITY MAPPING IN TURBULENT FLOW THROUGH ORIFICES.  

E-Print Network (OSTI)

?? Magnetic resonance phase velocity mapping (MRPVM) is an established clinical technique to measure blood flow. The acquired information can be used to diagnose a… (more)

Pidaparthi, Sahitya

2011-01-01T23:59:59.000Z

32

Test procedures help ensure accuracy of orifice meters  

SciTech Connect

Orifice meter measurement with a chart recorder has been a standard in the petroleum industry for years. The meter consists of the plate/tube and recorder, requires minimal maintenance and can accurately measure a wide range of flow rates. It must be routinely tested to ensure sustained accuracy. The orifice meter measures differential pressure, static pressure, and temperature. However, the accuracy of the measurement is only as good as the calibration devices used in the test. A typical meter test consists of meter calibration, orifice plate inspection, quality of gas tests, and documentation (test report) to verify the data. The paper describes 19 steps that a gas technician can follow to conduct a thorough meter test.

Fillman, C.R. [Coastal Flow Measurement, Inc., Houston, TX (United States)

1996-07-01T23:59:59.000Z

33

Fuel injector Holes (Fabrication of Micro-Orifices for Fuel Injectors...  

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

for loss of flow when orifice area is reduced by a factor of 4 - Compensate for reduced penetration distance of smaller orifice - Enable greater flexibility to control...

34

High energy density redox flow device  

DOE Patents (OSTI)

Redox flow devices are described in which at least one of the positive electrode or negative electrode-active materials is a semi-solid or is a condensed ion-storing electroactive material, and in which at least one of the electrode-active materials is transported to and from an assembly at which the electrochemical reaction occurs, producing electrical energy. The electronic conductivity of the semi-solid is increased by the addition of conductive particles to suspensions and/or via the surface modification of the solid in semi-solids (e.g., by coating the solid with a more electron conductive coating material to increase the power of the device). High energy density and high power redox flow devices are disclosed. The redox flow devices described herein can also include one or more inventive design features. In addition, inventive chemistries for use in redox flow devices are also described.

Chiang, Yet-Ming; Carter, W. Craig; Ho, Bryan Y; Duduta, Mihai; Limthongkul, Pimpa

2014-05-13T23:59:59.000Z

35

Self-regulating flow control device  

SciTech Connect

A variable, self-regulating valve having a hydraulic loss coefficient proportional to a positive exponential power of the flow rate. The device includes two objects in a flow channel and structure which assures that the distance between the two objects is an increasing function of the flow rate. The range of spacing between the objects is such that the hydraulic resistance of the valve is an increasing function of the distance between the two objects so that the desired hydraulic loss coefficient as a function of flow rate is obtained without variation in the flow area.

Humphreys, Duane A. (Pittsburgh, PA)

1984-01-01T23:59:59.000Z

36

Argonne TTRDC - Engines - Multi-Dimensional Modeling - Orifice Geometry  

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

Multi-Dimensional Modeling: Multi-Dimensional Modeling: Effect of Nozzle Orifice Geometry fuel vapor volume fractions Fig 1. Fuel vapor volume fractions for the three nozzles Nozzle orifice geometry is known to influence the flow inside the nozzle, which in turn affects the spray development, thus impacting combustion and emission processes. In the past, modeling studies have focused on the influence of nozzle orifice geometry on the flow inside the orifice only. This is mainly due to the lack of a suitable primary breakup model. Argonne engineers, with the help of the KH-ACT model, investigated the influence of nozzle orifice geometry not only on nozzle flow, but on spray, combustion and emission characteristics. Three different nozzle geometries were investigated (Fig. 1): Cylindrical (K=0, r/R=0)

37

Theory versus experimental results and comparisons for five orifice-compensated hybrid bearing configurations  

E-Print Network (OSTI)

). . . . . . 16 Static Loader (Kurtin, et al. , 1991). . . . . . . . . . . . . 17 Dynamic Excitation (Childs, Hale, and Rouvas, 1991). . . . . 18 Hydrostatic Bearing (Rowe, 1983) Pressure Distribution for an Orifice-Compensated Circular Hydrostatic Pad (Rowe... hydrostatic bearing, shown in Fig. 12, is an externally pressurized journal bearing which employs compensation (i. e. , flow restriction) devices to pro- vide both stability and load support for the journal. This compensation is accomplished by injecting a...

Franchek, Nancy Marie

1992-01-01T23:59:59.000Z

38

A 3D laser doppler velocimetry study of the upstream velocity profile effects upon the flow field inside an orifice flowmeter  

E-Print Network (OSTI)

of metering accuracy has resulted in an estimated tens of millions of dollars of annual mischarges for gas companies. This has led to basic research on methods to improve orifice meter accuracy. Those investigations underline the importance of the upstream...

Robic, Bernard Francois

2012-06-07T23:59:59.000Z

39

Study on the Portable and Integrated Type Pore Plate Flow Measureing Device for Condensate Water of 300MW Steam Turbine  

Science Journals Connector (OSTI)

In order to insure the accuracy of steam turbine thermal test in power plant, the flowrate measurement accuracy of condensate water should be insured. In this paper, the portable and integrated type flow measuring device for condensate water of 300MW steam turbine flow is designed, which is based on the condensate water parameters and the specific pipeline conditions at the exit of the No. 5 low pressure heater for 300MW unit. A integration of non standard differential pressure orifice flow meter is designed in this paper Through calibration in standard experimental system, the reason of the large error is that the flow field is disturbed by the origin plate type downward welding connecting flanges. Then the welding neck flanges is designed for the connecting flanges. The distribution of connecting flanges of flow field is weaken, and the measurement accuracy can meet the demand of steam turbine thermal test.

Yong Li; Jia-yong Wang

2012-01-01T23:59:59.000Z

40

Program sizes flange or pipe-tap orifice plates  

SciTech Connect

A program has been developed for the HP-41CV programmable calculator that is designed to compute differential pressure across an orifice, gas flow through an orifice, or the orifice-plate bore for orifice plates with flange or pipe taps. It is designed to save time in extracting values from charts, tables, and graphs which are required to perform the calculations. It is based on equations and data from Spink. The program is run by inputing appropriate data via execution of a program entitled ''DATA IN,'' calculating differential pressure via program ''dH20,'' gas flow via program ''FLOW,'' and via program ''BORE.'' Flange-tap calculations are performed with FLAG 01 not set, while pipe-tap calculations are selected by setting FLAG 01.

Hogsett, J.E.

1984-03-12T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

SHORT-TUBE SUBCRITICAL FLOW Enerag Division  

E-Print Network (OSTI)

#12;SHORT-TUBE SUBCRITICAL FLOW Y. C. Mei Enerag Division Oak Ridge National Laboratory Oak Ridge-tube subcritical flow. For short tubes used as refrigerant expansion devices, the orifice model is found inadequate-TUBE SUBCRITICAL FLOW INTRODUCTION Much theoretical and experimental work regarding short tube fluid flow has

Oak Ridge National Laboratory

42

High energy density redox flow device  

DOE Patents (OSTI)

Redox flow devices are described including a positive electrode current collector, a negative electrode current collector, and an ion-permeable membrane separating said positive and negative current collectors, positioned and arranged to define a positive electroactive zone and a negative electroactive zone; wherein at least one of said positive and negative electroactive zone comprises a flowable semi-solid composition comprising ion storage compound particles capable of taking up or releasing said ions during operation of the cell, and wherein the ion storage compound particles have a polydisperse size distribution in which the finest particles present in at least 5 vol % of the total volume, is at least a factor of 5 smaller than the largest particles present in at least 5 vol % of the total volume.

Chiang, Yet-Ming; Carter, William Craig; Duduta, Mihai; Limthongkul, Pimpa

2014-05-13T23:59:59.000Z

43

Significance of gauge line error in orifice measurement  

SciTech Connect

Pulsation induced gauge line amplification can cause errors in the recorded differential signal used to calculate flow. Its presence may be detected using dual transmitters (one connected at the orifice taps, the other at the end of the gauge lines) and comparing the relative peak to peak amplitudes. Its affect on recorded differential may be determined by averaging both signals with a PC based data acquisition and analysis system. Remedial action is recommended in all cases where amplification is detected. Use of close connect, full opening manifolds, is suggested to decouple the gauge lines` resonant frequency from that of the excitation`s, by positioning the recording device as close to the process signal`s origin as possible.

Bowen, J.W. [ANR Pipeline Co., Detroit, MI (United States)

1995-12-01T23:59:59.000Z

44

Impact of orifice metering uncertainties  

SciTech Connect

In a recent utility study, attributed 38% of its unaccounted-for UAF gas to orifice metering uncertainty biasing caused by straightening vanes. How this was determined and how this applied to the company's orifice meters is described. Almost all (97%) of the company's UAF gas was found to be attributed to identifiable accounting procedures, measurement problems, theft and leakage.

Stuart, J.W. (Pacific Gas and Electric Co., San Francisco, CA (USA))

1990-12-01T23:59:59.000Z

45

Fundamentals of orifice meter chart recorders  

SciTech Connect

The differential pressure chart recorder used to measure fluid flow through an orifice plate has gone through several design changes since it`s inception some sixty years ago. The present unit on the market uses two fluid filled bellows units connected together. One bellows senses the upstream pressure before the orifice plate, and the other bellows senses the downstream pressure after the orifice plate. This pressure differential created by fluid flow through the orifice plate moves the connected bellows on the back of the chart recorder, which are mechanically linked, by a rotating torque tube through the rear of the case, to the internal case linkage that is connected to an inking pen scribing a line on a circular chart. The ink line on a linear calibrated chart is proportional to the square of the now rate. While the significant information on proper recorder installation will be covered in the classroom. Due to space limitations, this paper will concentrate on a recommended method to precisely calibrate the chart recorder for maximum accuracy of measurement. The basic calibration procedure for the different pressure chart recorder (i.e. set zero, full scale and mid scale) has been taught for years. This paper does not intend to rehash old procedures that are fairly universally known. What this paper does present is a method to achieve a more accurate, more precise calibration than is prescribed in any manufacturer`s literature - and, at the same time, explain why this procedure is more accurate. In addition to being more accurate, this procedure has been proven to be faster than the compromise methods most recorder manufacturers advocate.

Whigham, S.E. [SEWCO Sales & Service, Amarillo, TX (United States)

1995-12-01T23:59:59.000Z

46

Low differential pressure and multiphase flow measurements by means of differential pressure devices  

E-Print Network (OSTI)

The response of slotted plate, Venturi meter and standard orifice to the presence of two phase, three phase and low differential flows was investigated. Two mixtures (air-water and air-oil) were used in the two-phase analysis while a mixture of air...

Justo, Hernandez Ruiz,

2004-11-15T23:59:59.000Z

47

Condensate Removal by Drain Orifice  

E-Print Network (OSTI)

Originally the Drain Orifice Assembly was developed to solve serious steam trap maintenance problems in Navy ship's high pressure systems. Installation was between two ANSI B16.5 Flanges. The high pressure systems operate at pressures between 150...

Guzick, L. L.

1979-01-01T23:59:59.000Z

48

Effect of the latest revision of ANSI 2530 (AGA No. 3) on the primary orifice metering element  

SciTech Connect

Significant improvements in the equations which govern-the measurement of natural gas using orifice meters, have necessitated changes in the primary devices used to gather the data. These changes have been incorporated into the new revision of the API 14.3 Part 2 Third Edition (AGA-3, ANSI 2530) and are detailed in the following discussion. The error in the coefficient of discharge has been reduced by approximately one half when orifice meters (fittings, flanges, etc) conforming to the new revision of the standard are used. These new orifice meters are constructed to much tighter dimensional and configurational requirements than in the past. Orifice meters which do not meet the requirements of Part 2, must have an in-place calibration run to determine the coefficient of discharge curve over the range of Reynolds Number expected. In all cases, presently installed equipment can continue to be used under a grandfather clause. This existing equipment will have higher flow measurement tolerances than equipment that meets the new edition, particularly in line sizes below 10 inches. Also, this existing equipment cannot be used on new installations or relocated.

Watkins, D. [Daniel Flow Products, Inc., Houston, TX (United States)

1995-12-01T23:59:59.000Z

49

Apparatus for depositing hard coating in a nozzle orifice  

DOE Patents (OSTI)

The present invention is directed to a process for coating the interior surfaces of an orifice in a substrate that forms a slurry fuel injection nozzle. In a specific embodiment, the nozzle is part of a fuel injection system for metering a coal-water slurry into a large, medium-speed, multi-cylinder diesel engine. In order to retard erosion of the orifice, the substrate is placed in a chemical vapor deposition (CVD) reaction chamber. A reaction gas is passed into the chamber at a gas temperature below its reaction temperature and is directed through the orifice in the substrate. The gas reaction temperature is a temperature at and above which the reaction gas deposits as a coating, and the reaction gas is of a composition whereby improved resistance to erosion by flow of the particulates in the slurry fuel is imparted by the deposited coating. Only the portion of the substrate in proximity to the orifice to be coated is selectively heated to at least the gas reaction temperature for effecting coating of the orifice`s interior surfaces by the vapor deposited coating formed from the reaction gas. 2 figs.

Flynn, P.L.; Giammarise, A.W.

1995-02-21T23:59:59.000Z

50

Pressure-flow reducer for aerosol focusing devices  

DOE Patents (OSTI)

A pressure-flow reducer, and an aerosol focusing system incorporating such a pressure-flow reducer, for performing high-flow, atmosphere-pressure sampling while delivering a tightly focused particle beam in vacuum via an aerodynamic focusing lens stack. The pressure-flow reducer has an inlet nozzle for adjusting the sampling flow rate, a pressure-flow reduction region with a skimmer and pumping ports for reducing the pressure and flow to enable interfacing with low pressure, low flow aerosol focusing devices, and a relaxation chamber for slowing or stopping aerosol particles. In this manner, the pressure-flow reducer decouples pressure from flow, and enables aerosol sampling at atmospheric pressure and at rates greater than 1 liter per minute.

Gard, Eric (San Francisco, CA); Riot, Vincent (Oakland, CA); Coffee, Keith (Diablo Grande, CA); Woods, Bruce (Livermore, CA); Tobias, Herbert (Kensington, CA); Birch, Jim (Albany, CA); Weisgraber, Todd (Brentwood, CA)

2008-04-22T23:59:59.000Z

51

A study of swirl and axial velocity profile effects on orifice flowmeters  

E-Print Network (OSTI)

with [ ] ratios of 0.43, 0.45, 0.484, 0.55, 0.6, 0.65, 0.7 and 0.726 are studied at both flow rates. The response of each orifice meter to the disturbance is measured by determining the axial pressure distribution near the orifice plate, and by determining...

Hauglie, Jayden Edward

1994-01-01T23:59:59.000Z

52

Chevron facility focused on commercial orifice-meter research  

SciTech Connect

Research to determine the accuracy of commercial orifice meters for custody-transfer measurement has indicated that high-volume gas meters can be flow-proven while in such service. The research further yielded more accurate orifice-meter discharge coefficient equations (at Reynolds numbers greater than 4,000,000) than current equations of the International Standards Organization (ISO) and the American Petroleum Institute (API). These are partial findings of a major study conducted by Chevron Oil Field Research Co. at its Venice, La., calibration facility.

Jones, E.H.; Ferguson, K.R.

1987-07-27T23:59:59.000Z

53

Apparatus for depositing hard coating in a nozzle orifice  

DOE Patents (OSTI)

The present invention is directed to a process for coating the interior surfaces of an orifice in a substrate that forms a slurry fuel injection nozzle. In a specific embodiment, the nozzle is part of a fuel injection system for metering a coal-water slurry into a large, medium-speed, multi-cylinder diesel engine. In order to retard erosion of the orifice, the substrate is placed in a chemical vapor deposition (CVD) reaction chamber. A reaction gas is passed into the chamber at a gas temperature below its reaction temperature and is directed through the orifice in the substrate. The gas reaction temperature is a temperature at and above which the reaction gas deposits as a coating, and the reaction gas is of a composition whereby improved resistance to erosion by flow of the particulates in the slurry fuel is imparted by the deposited coating. Only the portion of the substrate in proximity to the orifice to be coated is selectively heated to at least the gas reaction temperature for effecting coating of the orifice's interior surfaces by the vapor deposited coating formed from the reaction gas.

Flynn, Paul L. (Fairview, PA); Giammarise, Anthony W. (Erie, PA)

1995-01-01T23:59:59.000Z

54

Process for depositing hard coating in a nozzle orifice  

DOE Patents (OSTI)

The present invention is directed to a process for coating the interior surfaces of an orifice in a substrate that forms a slurry fuel injection nozzle. In a specific embodiment, the nozzle is part of a fuel injection system for metering a coal-water slurry into a large, medium-speed, multi-cylinder diesel engine. In order to retard erosion of the orifice, the substrate is placed in a chemical vapor deposition (CVD) reaction chamber. A reaction gas is passed into the chamber at a gas temperature below its reaction temperature and is directed through the orifice in the substrate. The gas reaction temperature is a temperature at and above which the reaction gas deposits as a coating, and the reaction gas is of a composition whereby improved resistance toerosion by flow of the particulates in the slurry fuel is imparted by the deposited coating. Only the portion of the substrate in proximity to the orifice to be coated is selectively heated to at least the gas reaction temperature for effecting coating of the orifice's interior surfaces by the vapor deposited coating formed from the reaction gas.

Flynn, Paul L. (5139 Fox Park Dr., Fairview, PA 16415); Giammarise, Anthony W. (527 Lincoln Ave., Erie, PA 16505)

1991-01-01T23:59:59.000Z

55

Magnetic Design for the PediaFlow Ventricular Assist Device  

E-Print Network (OSTI)

. The magnetic design includes permanent-magnet (PM) passive bearings for radial support of the rotor for rotation. These components are closely coupled both geometrically and magnetically, and were thereforeMagnetic Design for the PediaFlow Ventricular Assist Device *Myounggyu D. Noh, James F. Antaki

Paden, Brad

56

Reversed magnetization A NOVEL DEVICE FOR CONTINUOUS FLOW MAGNETIC TRAPPING  

E-Print Network (OSTI)

1. 3 µm5 µm Reversed magnetization A NOVEL DEVICE FOR CONTINUOUS FLOW MAGNETIC TRAPPING AND SORTING Martin d'hères, France ABSTRACT The manipulation of magnetically labeled bio-objects of nano or micrometer sizes is now realizable by combining the magnetic forces with microfluidics. This paper reports

Paris-Sud XI, Université de

57

Device for deriving energy from a flow of fluid  

SciTech Connect

Improved process and device for extracting energy present in a flowing fluid medium wherein a supported hub with propellers or blades is placed in said medium and the blades are provided with a wing or vane at the tip. The wing is of such a form that it generates a ''venturi effect'' in the flowing medium by which a part of the fluid which should normally pass outside the propeller disc area, is drawn into the propeller. The improvement consists of mixing of fluid which normally should pass outside the venturi with fluid which has flowed through the blades by provisions on blades and/or wing or vanes.

van Holten, T.

1982-12-07T23:59:59.000Z

58

The Impact of Refrigerant Charge, Air Flow and Expansion Devices on the Measured Performance of an Air-Source Heat Pump Part I  

SciTech Connect

This paper describes extensive tests performed on a 3-ton R-22 split heat pump in heating mode. The tests contain 150 steady-state performance tests, 18 cyclic tests and 18 defrost tests. During the testing work, the refrigerant charge level was varied from 70 % to 130% relative to the nominal value; the outdoor temperature was altered by three levels at 17 F (-8.3 C), 35 F (1.7 C) and 47 F (8.3 C); indoor air flow rates ranged from 60% to 150% of the rated air flow rate; and the expansion device was switched from a fixed-orifice to a thermal expansion value. Detailed performance data from the extensive steady state cyclic and defrost testing performed were presented and compared.

Shen, Bo [ORNL

2011-01-01T23:59:59.000Z

59

Mobile monolithic polymer elements for flow control in microfluidic devices  

DOE Patents (OSTI)

A cast-in-place and lithographically shaped mobile, monolithic polymer element for fluid flow control in microfluidic devices and method of manufacture. Microfluid flow control devices, or microvalves that provide for control of fluid or ionic current flow can be made incorporating a cast-in-place, mobile monolithic polymer element, disposed within a microchannel, and driven by fluid pressure (either liquid or gas) against a retaining or sealing surface. The polymer elements are made by the application of lithographic methods to monomer mixtures formulated in such a way that the polymer will not bond to microchannel walls. The polymer elements can seal against pressures greater than 5000 psi, and have a response time on the order of milliseconds. By the use of energetic radiation it is possible to depolymerize selected regions of the polymer element to form shapes that cannot be produced by conventional lithographic patterning and would be impossible to machine.

Hasselbrink, Jr., Ernest F. (Saline, MI); Rehm, Jason E. (Alameda, CA); Shepodd, Timothy J. (Livermore, CA); Kirby, Brian J. (San Francisco, CA)

2005-11-11T23:59:59.000Z

60

Review of Orifice Plate Steam Traps  

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

This guide was prepared to serve as a foundation for making informed decisions about when orifice plate steam traps should be considered for use in new or existing steam systems. It presents background information about different types of steam traps and defines their unique functional and operational characteristics. The advantages and disadvantages associated with using orifice plate steam traps are provided to highlight their capabilities and limitations. Finally, recommendations for using orifice plate steam traps are presented, and possible applications are identified.

Note: This page contains sample records for the topic "flow orifice devices" 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

Station design using orifice meters  

SciTech Connect

This paper reports that proper meter station design using gas orifice meters must include consideration of a number of factors to minimize operation and maintenance problems while obtaining the best accuracy over the life of the station. A station should provide accuracy, be safe, functional, economical and free of undue maintenance. It should comply with all codes, reports and specifications but most of all it should be able to comply with terms set forth in the contract. All measuring stations should be designed with considerations of growth or reductions in volume. It should be attractive and built to last for many years.

Upp, E.L. (Daniel Industries, Inc., Houston, TX (United States))

1992-07-01T23:59:59.000Z

62

Two phase mixing comparison, oil contamination comparison and manufacturing accuracy effect on calibration of slotted orifice meters  

E-Print Network (OSTI)

are visually documented. The effect of manufacturing accuracy on the slotted orifice plates is investigated as to the effect on the coefficient of discharge, percent change in pressure, and Reynolds number. The slotted orifice plate mixes two-phase flow better...

Sparks, Sara A.

2004-11-15T23:59:59.000Z

63

Effects of abnormal conditions on accuracy of orifice measurement  

SciTech Connect

The orifice meter is a remarkable paradox. Despite its incredible longevity and simple appearance, we`ve only begun to truly understand how its installation affects its performance. Hundreds of thousands of orifice meters are used for custody transfer around the world and every resulting transaction implies a base level of trust in the technology. Over the last 10 to 15 years we`ve learned more about the physics of flow measurement in {open_quotes}ideal{close_quotes} and {open_quotes}non-ideal{close_quotes} flow conditions. In many cases, the laboratory work confirms the experience of industry but there have been a few interesting surprises, too. The intended audience of this paper are users and/or designers of orifice meter facilities who want to know more about the contemporary issues, terminology, and results of research into abnormal metering conditions. Because of its introductory nature, this paper doesn`t attempt to squeeze twenty years if scientific data into five pages, but may lead the measurement aficionado toward specific areas of interest.

Peterson, W.B. [NOVA Gas Transmission Ltd., Calgary (Canada)

1995-12-01T23:59:59.000Z

64

Gas–liquid flow stability and bubble formation in non-Newtonian fluids in microfluidic flow-focusing devices  

Science Journals Connector (OSTI)

This communication describes the gas–liquid two-phase flow patterns and the formation of bubbles in non-Newtonian fluids in microfluidic flow-focusing devices. Experiments were conducted in two different polym...

Taotao Fu; Youguang Ma; Denis Funfschilling; Huai Z. Li

2011-05-01T23:59:59.000Z

65

Condensate removal device  

DOE Patents (OSTI)

A condensate removal device is disclosed which incorporates a strainer in unit with an orifice. The strainer is cylindrical with its longitudinal axis transverse to that of the vapor conduit in which it is mounted. The orifice is positioned inside the strainer proximate the end which is remoter from the vapor conduit.

Maddox, James W. (Newport News, VA); Berger, David D. (Alexandria, VA)

1984-01-01T23:59:59.000Z

66

A visualization comparison of convective flow boiling heat transfer augmentation devices  

E-Print Network (OSTI)

The qualitative effects of inset-table heat transfer phics. augmentation devices on vertical in-tube convective flow boiling flow regimes, transition mechanisms, and heat transfer are presented in this study. Three twisted tapes with twist ratios...

Lundy, Brian Franklin

2012-06-07T23:59:59.000Z

67

Pressure compensated flow control valve  

DOE Patents (OSTI)

The invention is an air flow control valve which is capable of maintaining a constant flow at the outlet despite changes in the inlet or outlet pressure. The device consists of a shell assembly with an inlet chamber and outlet chamber separated by a separation plate. The chambers are connected by an orifice. Also located within the inlet chamber is a port controller assembly. The port controller assembly consists of a differential pressure plate and port cap affixed thereon. The cap is able to slide in and out of the orifice separating the inlet and outlet chambers. When the pressure differential is sufficient, the differential pressure plate rises or falls to maintain a constant air flow. Movement of the port controller assembly does not require the use of seals, diaphragms, tight tolerances, bushings, bearings, hinges, guides, or lubricants.

Minteer, Daniel J. (West Richland, WA)

1999-01-01T23:59:59.000Z

68

Increasing Water Use Efficiency Through Improved Orifice Design and Operational Procedures for Subirrigation Systems  

E-Print Network (OSTI)

of emitters by particulate materials decreased as the cross-sectional area of the emitter opening was increased. Less than 0.06 atm (1 psig) vacuum had little effect on the flow of emitters tested. Higher vacuum amounts caused the reopening of plugged orifice...

Wilke, O. C.; Hiler, E. A.

69

Apparatus and process for depositing hard coating in a nozzle orifice  

DOE Patents (OSTI)

The present invention is directed to a process for coating the interior surfaces of an orifice in a substrate that forms a slurry fuel injection nozzle. In a specific embodiment, the nozzle is part of a fuel injection system for metering a coal-water slurry into a large, medium-speed, multi-cylinder diesel engine. In order to retard erosion of the orifice, the substrate is placed in a chemical vapor deposition (CVD) reaction chamber. A reaction gas is passed into the chamber at a gas temperature below its reaction temperature and is directed through the orifice in the substrate. The gas reaction temperature is a temperature at and above which the reaction gas deposits as a coating, and the reaction gas is of a composition whereby improved resistance to erosion by flow of the particulates in the slurry fuel is imparted by the deposited coating. Only the portion of the substrate in proximity to the orifice to be coated is selectively heated to at least the gas reaction temperature for effecting coating of the orifice's interior surfaces by the vapor deposited coating formed from the reaction gas.

Flynn, Paul L. (Fairview, PA); Giammarise, Anthony W. (Erie, PA)

1994-01-01T23:59:59.000Z

70

Baseline conditions for orifice meter calibration, Topical report, February 1990-July 1992  

SciTech Connect

The study analyzes nominal 102 mm (4') baseline orifice discharge coefficient, data for Beta ratios between 0.2 and 0.75 from several independent laboratories in the United States and Europe. Graphs of Cd vs. Reynolds number are presented for each data set, and each data set was analyzed to determine the statistical mean deviation and standard deviation from the American Gas Association (A.G.A.) Report No. 3 orifice coefficient equation. Baseline orifice Cd data taken in the Gas Research Institute Metering Research Facility (MRF) flowing nitrogen agree well with comparable high accuracy baseline data from the other laboratories. For Beta ratio values between 0.2 and 0.67, the mean deviation of MRF baseline data from the A.G.A. Report No. 3 orifice equation ranges from 0.05% to 0.20%. Vertical and horizontal profiles of mean axial velocity and axial turbulence intensity were measured in the MRF under typical baseline flow conditions for meter run lengths of 45 D and 100 D. The baseline profiles of mean axial velocity satisfy the International Standards Organization (ISO) 5167 requirement of less than + or - 5% variation from a fully developed, turbulent flow velocity profile.

Morrow, T.B.; Park, J.T.

1992-10-01T23:59:59.000Z

71

Hydrostatic bearings for a turbine fluid flow metering device  

DOE Patents (OSTI)

A rotor assembly fluid metering device has been improved by development of a hydrostatic bearing fluid system which provides bearing fluid at a common pressure to rotor assembly bearing surfaces. The bearing fluid distribution system produces a uniform film of fluid between bearing surfaces and allows rapid replacement of bearing fluid between bearing surfaces, thereby minimizing bearing wear and corrosion. 3 figs.

Fincke, J.R.

1982-05-04T23:59:59.000Z

72

Hydrostatic bearings for a turbine fluid flow metering device  

DOE Patents (OSTI)

A rotor assembly fluid metering device has been improved by development of a hydrostatic bearing fluid system which provides bearing fluid at a common pressure to rotor assembly bearing surfaces. The bearing fluid distribution system produces a uniform film of fluid distribution system produces a uniform film of fluid between bearing surfaces and allows rapid replacement of bearing fluid between bearing surfaces, thereby minimizing bearing wear and corrosion.

Fincke, J.R.

1980-05-02T23:59:59.000Z

73

220 kV SSSC device for power flow control (Smart Grid Project) | Open  

Open Energy Info (EERE)

kV SSSC device for power flow control (Smart Grid Project) kV SSSC device for power flow control (Smart Grid Project) Jump to: navigation, search Project Name 220 kV SSSC device for power flow control Country Spain Headquarters Location Catalonia, Spain Coordinates 41.59116°, 1.520862° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.59116,"lon":1.520862,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

74

Self-actuated device  

DOE Patents (OSTI)

A self-actuated device, of particular use as a valve or an orifice for nuclear reactor fuel and blanket assemblies, in which a gas produced by a neutron induced nuclear reaction gradually accumulates as a function of neutron fluence. The gas pressure increase occasioned by such accumulation of gas is used to actuate the device.

Hecht, Samuel L. (Richland, WA)

1984-01-01T23:59:59.000Z

75

Sampling device for withdrawing a representative sample from single and multi-phase flows  

DOE Patents (OSTI)

A fluid stream sampling device has been developed for the purpose of obtaining a representative sample from a single or multi-phase fluid flow. This objective is carried out by means of a probe which may be inserted into the fluid stream. Individual samples are withdrawn from the fluid flow by sampling ports with particular spacings, and the sampling parts are coupled to various analytical systems for characterization of the physical, thermal, and chemical properties of the fluid flow as a whole and also individually.

Apley, Walter J. (Pasco, WA); Cliff, William C. (Richland, WA); Creer, James M. (Richland, WA)

1984-01-01T23:59:59.000Z

76

Fuel injector Holes (Fabrication of Micro-Orifices for Fuel Injectors...  

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

injector Holes (Fabrication of Micro-Orifices for Fuel Injectors) Fuel injector Holes (Fabrication of Micro-Orifices for Fuel Injectors) 2009 DOE Hydrogen Program and Vehicle...

77

The in situ permeable flow sensor: A device for measuring groundwater flow velocity  

SciTech Connect

A new technology called the In Situ Permeable Flow Sensor has been developed at Sandia National Laboratories. These sensors use a thermal perturbation technique to directly measure the direction and magnitude of the full three dimensional groundwater flow velocity vector in unconsolidated, saturated, porous media. The velocity measured is an average value characteristic of an approximately 1 cubic meter volume of the subsurface. During a test at the Savannah River Site in South Carolina, two flow sensors were deployed in a confined aquifer in close proximity to a well which was screened over the entire vertical extent of the aquifer and the well was pumped at four different pumping rates. In this situation horizontal flow which is radially directed toward the pumping well is expected. The flow sensors measured horizontal flow which was directed toward the pumping well, within the uncertainty in the measurements. The observed magnitude of the horizontal component of the flow velocity increased linearly with pumping rate, as predicted by theoretical considerations. The measured horizontal component of the flow velocity differed from the predicted flow velocity, which was calculated with the assumptions that the hydraulic properties of the aquifer were radially homogeneous and isotropic, by less than a factor of two. Drawdown data obtained from other wells near the pumping well during the pump test indicate that the hydraulic properties of the aquifer are probably not radially homogeneous but the effect of the inhomogeneity on the flow velocity field around the pumping well was not modeled because the degree and distribution of the inhomogeneity are unknown. Grain size analysis of core samples from wells in the area were used to estimate the vertical distribution of hydraulic conductivity.

Ballard, S.; Barker, G.T. [Sandia National Labs., Albuquerque, NM (United States); Nichols, R.L. [Savannah River Technology Center, Aiken, SC (United States)

1994-03-01T23:59:59.000Z

78

Laser velocimetry study of the flow field in a centrifugal pump with a shrouded impeller  

E-Print Network (OSTI)

was measured using taps located at the flanges. Flow straighteners were placed twelve diameters upstream and five diameters downstream of the orifice plate. The accuracy of the orifice meter was verified by comparison with measurements of the flow rate made... L2F MCA N N, N, NOMENCLATURE Cross-sectional area of the inlet pipe Area of orifice Best efficiency point Coefficient of discharge for orifice meter Constant fraction discriminator in the L2F processor Beam diameter at probe volume...

Moran, Michael Kevin

2012-06-07T23:59:59.000Z

79

Fluid flow release regulating device, ERIP {number_sign}624: Final report  

SciTech Connect

DOE/ERIP project {number_sign}624 ``Fluid Flow Release Regulating Device`` designed, constructed, tested, and installed a rubber crest gate for regulating water levels at an impoundment such as a hydroelectric dam. A 92 foot long by 27 inch high rubber panel was installed in January 1997. Initial results were good until fabric degradation internal to the rubber caused loss of stiffness. Substitutes for the failed fabric are being tested. The project will continue after DOE participation terminates.

NONE

1997-12-01T23:59:59.000Z

80

Fabrication of Micro-Orifices for Diesel Fuel Injectors  

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

G. Fenske, J. Wang, and E. El- Hannouny (ANL), R Schaefer and F. Hamady (NVFEL) US DOE - Vehicle Technologies Propulsion Materials Jerry Gibbs Fabrication of Micro-orifices for...

Note: This page contains sample records for the topic "flow orifice devices" 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

Fabrication of small-orifice fuel injectors for diesel engines.  

SciTech Connect

Diesel fuel injector nozzles with spray hole diameters of 50-75 {micro}m have been fabricated via electroless nickel plating of conventionally made nozzles. Thick layers of nickel are deposited onto the orifice interior surfaces, reducing the diameter from {approx}200 {micro}m to the target diameter. The nickel plate is hard, smooth, and adherent, and covers the orifice interior surfaces uniformly.

Woodford, J. B.; Fenske, G. R.

2005-04-08T23:59:59.000Z

82

Flow-Through Microfluidic Device for High-Efficiency Transfection of Mammalian Cells through Combined Microelectroporation and Sonoporation  

E-Print Network (OSTI)

In this study we are presenting a proof-of-concept microfluidic device that simultaneously applies the conditions required for microelectroporation and micro-sonoporation in a flow-through fashion that allows for high throughput, high efficiency...

Longsine, Whitney Leigh

2012-07-16T23:59:59.000Z

83

Program gives design data for multiple-orifice system to avoid cavitation  

SciTech Connect

Determining the sizes of and axial distances between orifices in a multiple-orifice system is addressed in this HP-41CV program. Accurate measurements of these parameters are critical to avoid cavitation.

Coksem, P.G.; Patel, I.D.

1985-04-15T23:59:59.000Z

84

Review of automated custody transfer equipment for large-volume gas flow measurement. Final report, August 1, 1987-February 28, 1988  

SciTech Connect

The influence of electronic automation on the accuracy of gas custody transfer measurements was investigated. The term Electronic Flow Measurement (EFM) denotes both electronic flow correctors (for positive displacement meters) and flow computers (for orifice plate measurements). Electronic devices have potential to be slightly more accurate than their mechanical counterparts. Electronic systems have the additional benefits of greater application flexibility, reduced flow corrector inventory, reduced maintenance and calibration requirements, and data storage and communication capability. The primary concerns with EFM equipment are compatibility between units made by different manufacturers and their ability to function under extreme environmental conditions.

Rush, W.F.; Tamosaitis, V.

1989-06-01T23:59:59.000Z

85

Suction-recirculation device for stabilizing particle flows within a solar powered solid particle receiver  

DOE Patents (OSTI)

A suction-recirculation device for stabilizing the flow of a curtain of blackened heat absorption particles falling inside of a solar receiver with an open aperture. The curtain of particles absorbs the concentrated heat from a solar mirror array reflected up to the receiver on a solar power tower. External winds entering the receiver at an oblique angle can destabilize the particle curtain and eject particles. A fan and ductwork is located behind the back wall of the receiver and sucks air out through an array of small holes in the back wall. Any entrained particles are separated out by a conventional cyclone device. Then, the air is recirculated back to the top of the receiver by injecting the recycled air through an array of small holes in the receiver's ceiling and upper aperture front wall. Since internal air is recirculated, heat losses are minimized and high receiver efficiency is maintained. Suction-recirculation velocities in the range of 1-5 m/s are sufficient to stabilize the particle curtain against external wind speeds in excess of 10 m/s.

Kolb, Gregory J. (Albuquerque, NM)

2012-02-07T23:59:59.000Z

86

Orifice-meter measurement errors caused by gas-system pulsations can be controlled  

SciTech Connect

Pulsation-induced inaccuracies in orifice meter gas-flow measurement can be eliminated or at least better controlled. In today's increasingly competitive gas-supply marketplace, such errors can no longer be ignored. In some instances, pulsations have caused errors of 30-50% in volumes. Policies and procedures of Arkla Energy Resources, Shreveport, La., reflect current efforts to combat the problem. Orifice-meter pulsation error can be divided into three categories: those associated with the primary element itself (across the flange taps); those in the gauge line/manifold/transducer system;; and those within the recording and analysis system. Each category is significant in that total meter error contains all three types (box). While it would be desirable to segregate the problems and solve them independently, it is very difficult to do. It becomes apparent quickly that all three occur in many cases. The focus of this discussion is on primary-element errors; if these are reduced, other errors tend to be minimal.

Gegg, D. (Arkla Energy Resources, Shreveport, LA (US))

1989-10-16T23:59:59.000Z

87

Device and method for measuring multi-phase fluid flow in a conduit having an abrupt gradual bend  

DOE Patents (OSTI)

A system is described for measuring fluid flow in a conduit having an abrupt bend. The system includes pressure transducers, one disposed in the conduit at the inside of the bend and one or more disposed in the conduit at the outside of the bend but spaced a distance therefrom. The pressure transducers measure the pressure of fluid in the conduit at the locations of the pressure transducers and this information is used by a computational device to calculate fluid flow rate in the conduit. For multi-phase fluid, the density of the fluid is measured by another pair of pressure transducers, one of which is located in the conduit elevationally above the other. The computation device then uses the density measurement along with the fluid pressure measurements, to calculate fluid flow. 1 fig.

Ortiz, M.G.

1998-02-10T23:59:59.000Z

88

Device and method for measuring multi-phase fluid flow in a conduit using an elbow flow meter  

DOE Patents (OSTI)

A system for measuring fluid flow in a conduit. The system utilizes pressure transducers disposed generally in line upstream and downstream of the flow of fluid in a bend in the conduit. Data from the pressure transducers is transmitted to a microprocessor or computer. The pressure differential measured by the pressure transducers is then used to calculate the fluid flow rate in the conduit. Control signals may then be generated by the microprocessor or computer to control flow, total fluid dispersed, (in, for example, an irrigation system), area of dispersal or other desired effect based on the fluid flow in the conduit.

Ortiz, Marcos G. (Idaho Falls, ID); Boucher, Timothy J. (Helena, MT)

1997-01-01T23:59:59.000Z

89

Device and method for measuring multi-phase fluid flow in a conduit using an elbow flow meter  

DOE Patents (OSTI)

A system is described for measuring fluid flow in a conduit. The system utilizes pressure transducers disposed generally in line upstream and downstream of the flow of fluid in a bend in the conduit. Data from the pressure transducers is transmitted to a microprocessor or computer. The pressure differential measured by the pressure transducers is then used to calculate the fluid flow rate in the conduit. Control signals may then be generated by the microprocessor or computer to control flow, total fluid dispersed, (in, for example, an irrigation system), area of dispersal or other desired effect based on the fluid flow in the conduit. 2 figs.

Ortiz, M.G.; Boucher, T.J.

1997-06-24T23:59:59.000Z

90

Portable Liquid Flow Metering for Energy Conservation Programs  

E-Print Network (OSTI)

meters to measure liquids. This paper reviews the principles of ultrasonic flow meters. Applications and costs of ultrasonic versus orifice flow meters are important to consider in energy audits. A discussion follows on 'how' and 'where' to use...

Miles, F. J.

1982-01-01T23:59:59.000Z

91

Practical Diagnostics for Evaluating Residential Commissioning Metrics  

E-Print Network (OSTI)

the orifice. The manufacturer reports that its accuracy isaccuracy of this method. Flow Plate and Grid: This new device uses a calibrated multiple-orifice

Wray, Craig; Walker, Iain; Siegel, Jeff; Sherman, Max

2002-01-01T23:59:59.000Z

92

Instrumented home energy rating and commissioning  

E-Print Network (OSTI)

the orifice. The manufacturer reports that its accuracy isaccuracy of this method. Flow Plate and Grid: This new device uses a calibrated multiple-orifice

Wray, Craig P.; Walker, Iain S.; Sherman, Max H.

2003-01-01T23:59:59.000Z

93

Guidelines for residential commissioning  

E-Print Network (OSTI)

the orifice. The manufacturer reports that its accuracy isaccuracy of this method. Flow Plate and Grid: This new device uses a calibrated multiple-orifice

Wray, Craig P.; Walker, Iain S.; Sherman, Max H.

2003-01-01T23:59:59.000Z

94

Unaccounted-for gas project. Measurement Task Force (orifice meter studies). Volume 2B. Final report  

SciTech Connect

The study was aimed at determining unaccounted-for (UAF) gas volumes resulting from operating Pacific Gas and Electric Co.'s transmission and distribution systems during 1987. Activities and methods are described and results are presented for research conducted on orifice meter accuracy. The Measurement Task Force determined that orifice metering inaccuracies were the largest single contributor to 1987 UAF.

Godkin, B.J.; Robertson, J.D.; Wlasenko, R.G.; Cowgill, R.M.; Grinstead, J.R.

1990-06-01T23:59:59.000Z

95

Application of continuous flow and alternative energy devices for 5-hydroxymethylfurfural production  

Science Journals Connector (OSTI)

Dehydration of fructose and glucose in dipolar, aprotic solvents leads to formation of 5-hydroxymethylfurfural. Conditions for continuous flow reactions using a...

Michael Schön; Michael Schnürch; Marko D. Mihovilovic

2011-08-01T23:59:59.000Z

96

The orifice expansion correction for a 50 mm line size at various diameter ratios  

SciTech Connect

The expansion coefficient or factor for a compressible flowmeter corrects for the change in pressure and density as the fluid is accelerated through the flowmeter. The expansion correction currently in use in the United States and also in other countries was developed over fifty years ago by Buckingham and Bean. More recent work reported by Kinghorn shows the equation currently in use to be in error. This paper describes the results of a test program to determine the expansion factors for flange-tapped sharp-edged orifices with diameter ratios between 0.242 and 0.726 in a nominal 50 mm (2 inch) line. Critical flow Venturis are used as the reference standards and dry air as the flowing fluid. The ratio of differential pressure to inlet static pressure is varied over a range of zero to about 0.2 at a constant Reynolds number. The expansion factor is determined form the apparent change in discharge coefficient at a constant Reynolds number.

Seidl, W. [Colorado Engineering Experiment Station, Inc., Nunn, CO (United States)

1995-12-31T23:59:59.000Z

97

Development of a CouetteTaylor flow device with active minimization of secondary circulation  

E-Print Network (OSTI)

flexibility in developing flow profiles. The working fluids of the experiment are water, a water-glycerol mix of the experiment and some representative results obtained with laser Doppler velocimetry in water are discussed magnetorotational instability MRI experiment is de- signed to study are subcritical hydrodynamic instability3,4 SHI

Ji, Hantao

98

Analytical solution of the regenerator temperature distribution in a thermoacoustic device with mean flow  

Science Journals Connector (OSTI)

Previous work by the authors has identified a potential for improvement in the efficiency of a traveling wave thermoacoustic engine by replacing the hot heat exchanger with a steady flow of hot gas. An essential step in determining the feasibility of such an engine lies in determining how the mean flow affects the temperature distribution in the regenerator which in turn affects its acoustic driving capability. In the current work the second order time?averaged thermoacoustic energy equation with mean flow is solved analytically for the mean temperature distribution in the regenerator. The resulting expression accounts for the dependence of the working fluid’s thermal conductivity and viscosity on temperature and results in a nearly exponential temperature profile. The specific effects of mean flow axial conduction acoustic velocity amplitude and gas property variation on the temperature distribution in the regenerator will be explored. In turn the effect of the temperature profile on regenerator performance will also be reviewed. In addition to their usefulness in the feasibility study these results can also be applied to assess losses in existing thermoacoustic engines and refrigerators where acoustic streaming results in unwanted net mass flux through the regenerator.

2002-01-01T23:59:59.000Z

99

Estimation of Gas Leak Rates Through Very Small Orifices  

Office of Scientific and Technical Information (OSTI)

Estimation of Gas Leak Rates Estimation of Gas Leak Rates Through Very Small Orifices and Channels by Herbert J. Bomelburg February 1977 Prepared for the Nuclear Regulatory Commission -..- Pacific Northwest Laboratories Th% report was preparrd is an accceullt r.84 work spoi.wr~d by the Un~ted States Governmect. Kettker t > ~ United States nor the L'nited states 'rl:clczr 1tcgl;l;:cry Cornmiszion. :or ally c! their e m p i o y e ~ , nor any of chcrr contractors, subcontraao~r, a . tlveir rrn~invct?t-, r.~aies any H r r l a tty, cxpreji o r implied, or ?.;+~nics any !egA liability or rcrpocsibility for iirc accuracy. zcm:lc.~cn~ss 01 ~rscf.~!ccss -,f an). i?fzrxat-on, 3Poar.i:b4. prodiict cr I.m)cess disclosed, or repreen:.; :hi.: i;s i43? wott:rl n.;\ irlfringe pr ivzrc:i*l u w x o :ig.~ts.

100

Modeling Improvements for Air Source Heat Pumps using Different Expansion Devices at Varied Charge Levels Part II  

SciTech Connect

This paper describes steady-state performance simulations performed on a 3-ton R-22 split heat pump in heating mode. In total, 150 steady-state points were simulated, which covers refrigerant charge levels from 70 % to 130% relative to the nominal value, the outdoor temperatures at 17 F (-8.3 C), 35 F (1.7 C) and 47 F (8.3 C), indoor air flow rates from 60% to 150% of the rated air flow rate, and two types of expansion devices (fixed orifice and thermostatic expansion valve). A charge tuning method, which is to calibrate the charge inventory model based on measurements at two operation conditions, was applied and shown to improve the system simulation accuracy significantly in an extensive range of charge levels. In addition, we discuss the effects of suction line accumulator in modeling a heat pump system using either a fixed orifice or thermal expansion valve. Last, we identify the issue of refrigerant mass flow mal-distribution at low charge levels and propose an improved modeling approach.

Shen, Bo [ORNL

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Microchannel devices  

SciTech Connect

The fabrication of stainless steel microchannel heat exchangers was examined through microlamination, the process of diffusion bonding precision machined metallic foils. The influence of diffusion bonding parameters, as well as the device geometry on the strength of the bond between the foils and embedded channel integrity, was investigated. During diffusion bonding, high temperatures and/or pressures result in well bonded foils, but these conditions cause the embedded channels to deform, which will degrade the efficiency of fluid flow through the channels. Alternatively, low temperatures and/or pressures result in undeformed channels but weakly bonded foils. This causes failure of the device due to fluid leakage. Thus, a processing envelope exists for producing a sound device with no fluid leakage and no degradation of fluid flow properties. The theoretical limit on aspect ratio within two-fluid counter-flow microchannel heat exchangers was also investigated. A counter-flow device is comprised of alternating layers of microchannels, which allow the two fluids to flow in opposite directions separated by fins. A theoretical model for interpreting the span of the fin as a function of the fin thickness was established. The model was verified experimentally by fabricating specimens to simulate the counter-flow device. The results of these investigations were used to aid in the design and processing of prototype microchannel devices.

Alman, David E.; Wilson, Rick D.

2001-09-01T23:59:59.000Z

102

J. Non-Newtonian Fluid Mech., 72 (1997) 7386 Start-up of flow of a FENE-fluid through a 4:1:4 constriction in  

E-Print Network (OSTI)

. Introduction Elastic fluids resist converging flow through an orifice, responding by increasing the pressure drop to good accuracy. As a further numerical convenience, we make the shape of the constriction round the flow through a small orifice in a large plate between two reservoirs. They used HPAM and PEO solutions

Hinch, John

103

Fabrication of Micro-Orifices for Diesel Fuel Injectors  

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

Scuffing resistance of a MoN-Cu nano-composite coating under exteme loading condidtions do not show scuffing within the load limit of the testing device.

104

Scaling of pressure drop for oscillatory flow through a slot Department of Mechanical and Aerospace Engineering, The George Washington University,  

E-Print Network (OSTI)

They impart momentum to the external flow through an orifice or slot without any net ad- dition of mass due been found to predict the general behavior of ZNMF actuators with reason- able accuracy. However, one in the orifice/slot. The formulation of LEMs hinges on accurate prediction of the acoustic impedance, which

Mittal, Rajat

105

A Simple Audio Conductivity Device  

Science Journals Connector (OSTI)

A Simple Audio Conductivity Device ... To solve these problems, the authors have built a simple audio conductivity device that is very sensitive to current flow. ...

Gregory Berenato; David F. Maynard

1997-04-01T23:59:59.000Z

106

Lateral flow devices  

DOE Patents (OSTI)

An analytical test for an analyte comprises (a) a base, having a reaction area and a visualization area, (b) a capture species, on the base in the visualization area, comprising nucleic acid, and (c) analysis chemistry reagents, on the base in the reaction area. The analysis chemistry reagents comprise (i) a substrate comprising nucleic acid and a first label, and (ii) a reactor comprising nucleic acid. The analysis chemistry reagents can react with a sample comprising the analyte and water, to produce a visualization species comprising nucleic acid and the first label, and the capture species can bind the visualization species.

Mazumdar, Debapriya (Urbana, IL); Liu, Juewen (Urbana, IL); Lu, Yi (Champaign, IL)

2010-09-21T23:59:59.000Z

107

E-Print Network 3.0 - aortic blood flow Sample Search Results  

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

closing of the aortic valve. In this way... . In the setup, both the mitral and aortic orifices were equipped with Carbomedics bi-leaflet valves, and flow... pressures. At that...

108

Experimental test results presented for field-damaged orifice meter plates  

SciTech Connect

Tests demonstrate that, unlike other types of meters, there is minimal loss of accuracy with orifice meters even when operational excursions are such that severe damage occurs. Both flange taps and pipe taps effectively have the same general pattern in that the actual coefficient increases with increasing permanent deformation. Of the two types of orifice tap, these data indicate that flange-tapped orifices may be less susceptible to severe deformation. This is probably caused by changes in the local pressure gradients in the vicinity of the plate. Since pipe taps are at such a large distance from the plate, these changes are probably not noticeable due to the turbulent mixing that takes place. With orifice meters, visual inspection of the plates after severe operation is recommended, to tell the user if the plate is beyond specifications. With other types of meters (i.e., other than differential meters) recalibration is the only method of determining if the meter has been affected. Where damage is apparent, the plate (or the meter if it is not of the differential type) should be immediately replaced.

Teyssandier, R.G.; Chisman, W.E.

1984-04-30T23:59:59.000Z

109

The formation of gas bubbles at submerged orifices  

E-Print Network (OSTI)

. For values of Nc greater than 0.85, the formation and release of the bubbles appeared to occur almost simul? taneously. For the formation of bubbles at zero chamber volume and at low flow rates, the following equation was developed. (2) Ve * equilibrium... experimentally. The d determined for water (benzene (

Hayes, William Bell

2013-10-04T23:59:59.000Z

110

Response of a slotted plate flow meter to horizontal two phase flow  

E-Print Network (OSTI)

meter is always better in performance and accuracy than the standard orifice plate flow meter. This study is primarily based on how a slotted plate responds to horizontal two-phase flow with air and water being used as the working fluids. The plates...

Muralidharan, Vasanth

2005-02-17T23:59:59.000Z

111

Vacuum chamber with a supersonic-flow aerodynamic window  

DOE Patents (OSTI)

A supersonic flow aerodynamic window is disclosed whereby a steam ejector situated in a primary chamber at vacuum exhausts superheated steam toward an orifice to a region of higher pressure, creating a barrier to the gas in the region of higher pressure which attempts to enter through the orifice. In a mixing chamber outside and in fluid communication with the primary chamber, superheated steam and gas are combined into a mixture which then enters the primary chamber through the orifice. At the point of impact of the ejector/superheated steam and the incoming gas/superheated steam mixture, a barrier is created to the gas attempting to enter the ejector chamber. This barrier, coupled with suitable vacuum pumping means and cooling means, serves to keep the steam ejector and primary chamber at a negative pressure, even though the primary chamber has an orifice to a region of higher pressure.

Hanson, C.L.

1980-10-14T23:59:59.000Z

112

Vacuum chamber with a supersonic flow aerodynamic window  

DOE Patents (OSTI)

A supersonic flow aerodynamic window, whereby a steam ejector situated in a primary chamber at vacuum exhausts superheated steam toward an orifice to a region of higher pressure, creating a barrier to the gas in the region of higher pressure which attempts to enter through the orifice. In a mixing chamber outside and in fluid communication with the primary chamber, superheated steam and gas are combined into a mixture which then enters the primary chamber through the orifice. At the point of impact of the ejector/superheated steam and the incoming gas/superheated steam mixture, a barrier is created to the gas attempting to enter the ejector chamber. This barrier, coupled with suitable vacuum pumping means and cooling means, serves to keep the steam ejector and primary chamber at a negative pressure, even though the primary chamber has an orifice to a region of higher pressure.

Hanson, Clark L. (Livermore, CA)

1982-01-01T23:59:59.000Z

113

Enabling High Efficiency Clean Combustion with Micro-Variable Circular-Orifice (MVCO) Fuel Injector and Adaptive PCCI  

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

Key characteristics of variable orifice fuel injector are described that will extend the operation maps of early PCCI combustion and enable dual-mode combustion over full operating maps.

114

Measurements versus Predictions for a Hybrid (Hydrostatic plus Hydrodynamic Thrust Bearing for a Range of Orifice Diameters  

E-Print Network (OSTI)

A fixed geometry hybrid thrust bearing is investigated with three different supply orifice diameters. The test rig uses a face-to-face thrust bearing design, with the test bearing acting as the rotor loading mechanism. A hydraulic shaker applies...

Esser, Paul R.

2011-08-08T23:59:59.000Z

115

Size distributions of fly ash using Coulter Multisizer: Use of multiple orifices and fitting to truncated log-normal distributions  

SciTech Connect

Fly ash particles, which are predominantly spherical and glassy, are produced by melting of the mineral inclusions in the coal during combustion. Particle diameters can range from sub-micrometer (micron or {mu}m) to greater than 100 {mu}m. The size distribution of fly ash is needed to determine its role in the radiation transfer process in pulverized coal combustors. The Coulter Multisizer is an useful instrument for sizing powders with a broad size distribution. A single Multisizer orifice can size particles only within a specific size range limited at the lower end to a few percent of orifice diameter by sensitivity and at the upper end by increasing non-linearity of the signal-volume relation. A scheme for combining data obtained using orifices of different diameters is described. The manufacturers state that the smallest particle which can be sized accurately is nominally 2% of the diameter of the orifice. However, it was found that the data for particles less than 4% of the orifice diameter were not reliable. In order to use the smaller orifices, the larger particles have to be removed from the sample. A wet-sieving apparatus, designed for accurate separation of the particles by size, is described. A log-normal distribution function, truncated outside the measurement limits, fits the size distribution data well. Size parameters for fly ashes of six representative US coals are presented.

Ghosal, S.; Ebert, J.L.; Self, S.A.

1991-11-01T23:59:59.000Z

116

Differential probes aid flow measurement  

SciTech Connect

Nonconstricting differential pressure flow probes which help solve the problems of clogging, wear, and pressure loss at the Seawater Filtration Facility in Saudi Arabia are described. Treated seawater is pumped into oil-bearing formations for secondary recovery. Figures showing principle of operation for probes, installation schematic and long-term accuracy results (flow probes vs. orifice meters) are presented. The new diamond-shaped design flow sensor offers accurate flow measurement with low permanent pressure loss, which translates into cost savings for the operator.

Mesnard, D.R.

1982-07-01T23:59:59.000Z

117

Tribological study on hydrostatic slipper bearing with annular orifice damper for water hydraulic axial piston motor  

Science Journals Connector (OSTI)

Hydrostatic slipper bearing is an effective way to maintain a fluid film between slipper pad and swash plate that slide against each other, and thereby mitigate direct surface-to-surface contact in water hydraulic axial piston motor (WHAPM). The hydrostatic slipper bearing with an annular orifice damper is proposed, and the reaction force of the bearing in WHAPM is investigated. The effects from the friction within the cylinder bore, the dynamics of the piston, and the centrifugal force of the piston–slipper assembly are examined. The characteristic equation of the hydrostatic slipper bearing with an annular orifice damper is formulated, where the effects of various geometric parameters (e.g. damping length, supporting length, and clearance between the piston and the cylinder bore) are reflected. The relevant criterion for designing the hydrostatic slipper bearing can then be established. Results of the theoretical analyses indicate that (a) the friction coefficient, the swash plate angle, and the inertia and centrifugal loads (generated under a high motor rotating speed) would have significant influences on the reaction force; (b) an appropriate swash plate angle can help eliminate the fluctuation of the reaction force; (c) the load-carrying capacity of the hydrostatic slipper bearing is more sensitive to the damping length than to the supporting length of the piston; (d) a short damping length can help enhance the load-carrying capacity; (e) a small clearance between the piston and the cylinder bore would help improve the adaptive ability to the varying load for the hydrostatic slipper bearing, when clearance between the slipper pad and the swash plate ranges from 5 to 20 ?m. Experimental studies of the slipper pads sliding against the swash plates are conducted at a custom-manufactured test apparatus, given different material combinations and design methods. The experimental results indicate that the hydrostatic slipper bearing with an annular orifice damper would decrease the possibility of the severe wear between the slipper pad and the swash plate in comparison with the hydrostatic clamping ratio bearing in the WHAPM, and the CRA laser cladding (compared to the ZrO2·MgO-plasma-sprayed coating and the stainless steel 2Cr13) is a promising candidate as the tribo-material when sliding against composite materials in water lubrication system. The hydrostatic slipper bearing with an annular orifice damper has been successfully applied to a WHAPM developed at the Huazhong University Science and Technology. The result demonstrates that the developed bearing has a satisfactory tribolgical performance, and can be extended to the manufacture of water hydraulic axial piston pumps.

S.L. Nie; G.H. Huang; Y.P. Li

2006-01-01T23:59:59.000Z

118

An Evaluation of the Effects of Refrigerant Charge on a Residential Central Air Conditioner with Orifice Expansion  

E-Print Network (OSTI)

Section 2.3 Outdoor Test Section 2.5 Refrigerant Side 2.6 Data Acquisition 2.9 Refrigerant Charging Procedures 2.11 References 2.13 3 NOMINAL SIZE ORIFICE RESULTS 3.1 System Performance Data 3.1 Detailed System Data 3.10 4 RESULTS FOR ALTERNATE ORIFICES 4... circuit to allow easy disassembly of the unit without any loss of refrigerant charge. Charging taps in each section of the circuitry allowed purging and charging of each section independently. 2.6 ro Figure 2.3 - Schematic of the refrigerant circuit...

O'Neal, D. L.; Ramsey, C. J.; Farzad, M.

1989-01-01T23:59:59.000Z

119

Fluidic nanotubes and devices  

DOE Patents (OSTI)

Fluidic nanotube devices are described in which a hydrophilic, non-carbon nanotube, has its ends fluidly coupled to reservoirs. Source and drain contacts are connected to opposing ends of the nanotube, or within each reservoir near the opening of the nanotube. The passage of molecular species can be sensed by measuring current flow (source-drain, ionic, or combination). The tube interior can be functionalized by joining binding molecules so that different molecular species can be sensed by detecting current changes. The nanotube may be a semiconductor, wherein a tubular transistor is formed. A gate electrode can be attached between source and drain to control current flow and ionic flow. By way of example an electrophoretic array embodiment is described, integrating MEMs switches. A variety of applications are described, such as: nanopores, nanocapillary devices, nanoelectrophoretic, DNA sequence detectors, immunosensors, thermoelectric devices, photonic devices, nanoscale fluidic bioseparators, imaging devices, and so forth.

Yang, Peidong (El Cerrito, CA); He, Rongrui (El Cerrito, CA); Goldberger, Joshua (Berkeley, CA); Fan, Rong (El Cerrito, CA); Wu, Yiying (Albany, CA); Li, Deyu (Albany, CA); Majumdar, Arun (Orinda, CA)

2010-01-10T23:59:59.000Z

120

Dielectrokinetic chromatography devices  

DOE Patents (OSTI)

Disclosed herein are methods and devices for dielectrokinetic chromatography. As disclosed, the devices comprise microchannels having at least one perturber which produces a non-uniformity in a field spanning the width of the microchannel. The interaction of the field non-uniformity with a perturber produces a secondary flow which competes with a primary flow. By decreasing the size of the perturber the secondary flow becomes significant for particles/analytes in the nanometer-size range. Depending on the nature of a particle/analyte present in the fluid and its interaction with the primary flow and the secondary flow, the analyte may be retained or redirected. The composition of the primary flow can be varied to affect the magnitude of primary and/or secondary flows on the particles/analytes and thereby separate and concentrate it from other particles/analytes.

Chirica, Gabriela S; Fiechtner, Gregory J; Singh, Anup K

2014-12-16T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Colloidal particle deposition in turbulent flow  

SciTech Connect

A theoretical analysis is presented which describes the initial deposition of monodispersed spherical colloidal particles from a steady fully developed turbulent flow onto conduit walls. When the net particle-conduit electrical interaction potential is attractive, particle deposition is shown to be often governed by turbulent hydrodynamics. When the net particle-conduit electrical interaction potential possess a repulsive maximum, particle deposition to first order is uniform and depends solely on electrical interaction effects. The developed theoretical model specialized to orifice deposition with the use of Harwell Flow3D turbulence modelling software qualitatively described the deposition of 0.5 {mu}m silica particles onto glass orifices from an aqueous suspension. The effect of the electrical double layer on the rate of colloidal particle deposition in laminar flow has been described by Spielman and Friedlander (1), Dahneke (2), Bowen et al. (3) and Bowen and Epstein (4). This article describes the extension of their work to colloidal particle deposition under steady fully developed turbulent flow conditions. This article also reports the results of orifice particle deposition experiments which were conducted to qualitatively investigate the developed theoretical model.

Morton, D.S.

1994-05-01T23:59:59.000Z

122

Cyprinid swimming behaviour in response to turbulent flow  

Science Journals Connector (OSTI)

Turbulence is a complex phenomenon which commonly occurs in river and fishway flows. It is a difficult subject to study, especially biologically, yet turbulence may affect fish movements and fish passage efficiency. Studies on quantifying fish responses to turbulence, particularly within fishways, are lacking. This study investigated the swimming behaviour of 140 adult Iberian barbel (Luciobarbus bocagei) of two size-classes (small fish: 15 ? TL pool-type fishway: (i) offset orifices, (ii) straight orifices and (iii) straight orifices with a deflector bar of 0.5bo located at 0.2L from the inlet orifices, where bo is the width of the square orifices ranging from 0.18 to 0.23 m and L is the pool length (1.90 m). Water velocity and turbulence (turbulent kinetic energy, Reynolds shear stress, turbulence intensity and eddy size) were characterized using a 3D Acoustic Doppler Velocimeter (ADV) and were related with fish swimming behaviour. The influence of turbulent flow on the swimming behaviour of barbel was assessed through the number of successful fish passage attempts and associated passage times. The amount of time fish spent in a certain cell of the pool (transit time) was measured and related to hydraulic conditions. The highest rates of passage and the corresponding lowest times were found in experiments conducted with offset orifices. Although size-related behavioural responses to turbulence were observed, Reynolds shear stress appeared as one of the most important turbulence descriptors explaining fish transit time for both size-classes in experiments conducted with offset and straight orifices; furthermore, swimming behaviour of larger fish was found to be strongly affected by the eddies created, in particular by those of similar size to fish total length, which were mainly found in straight orifices with a deflector bar arrangement. The results provide valuable insights on barbel swimming behavioural responses to turbulence, which may help engineers and biologists to develop effective systems for the passage of this species and others with similar biomechanical capacities.

Ana T. Silva; Christos Katopodis; José M. Santos; Maria T. Ferreira; António N. Pinheiro

2012-01-01T23:59:59.000Z

123

Size distributions of fly ash using Coulter Multisizer: Use of multiple orifices and fitting to truncated log-normal distributions. [Coulter Multisizer  

SciTech Connect

Fly ash particles, which are predominantly spherical and glassy, are produced by melting of the mineral inclusions in the coal during combustion. Particle diameters can range from sub-micrometer (micron or {mu}m) to greater than 100 {mu}m. The size distribution of fly ash is needed to determine its role in the radiation transfer process in pulverized coal combustors. The Coulter Multisizer is an useful instrument for sizing powders with a broad size distribution. A single Multisizer orifice can size particles only within a specific size range limited at the lower end to a few percent of orifice diameter by sensitivity and at the upper end by increasing non-linearity of the signal-volume relation. A scheme for combining data obtained using orifices of different diameters is described. The manufacturers state that the smallest particle which can be sized accurately is nominally 2% of the diameter of the orifice. However, it was found that the data for particles less than 4% of the orifice diameter were not reliable. In order to use the smaller orifices, the larger particles have to be removed from the sample. A wet-sieving apparatus, designed for accurate separation of the particles by size, is described. A log-normal distribution function, truncated outside the measurement limits, fits the size distribution data well. Size parameters for fly ashes of six representative US coals are presented.

Ghosal, S.; Ebert, J.L.; Self, S.A.

1991-11-01T23:59:59.000Z

124

Daydreaming Devices  

E-Print Network (OSTI)

Daydreaming Devices is a project on aspects of daydream and the design of convertible furniture within the context of art. This thesis addresses the concepts and the design of two daydreaming devices developed during my ...

Da Ponte, Ana Sofia Lopes

2008-01-01T23:59:59.000Z

125

The Effect of Reduced Evaporator Air Flow on the Performance of a Residential Central Air Conditioner  

E-Print Network (OSTI)

This paper discusses the measured degradation in performance of a residential air conditioning system operating under reduced evaporator air flow. Experiments were conducted using a R-22 three-ton split-type cooling system with a short-tube orifice...

Palani, M.; O'Neal, D.; Haberl, J.

126

Cooling of superconducting devices by liquid storage and refrigeration unit  

DOE Patents (OSTI)

A system is disclosed for cooling superconducting devices. The system includes a cryogen cooling system configured to be coupled to the superconducting device and to supply cryogen to the device. The system also includes a cryogen storage system configured to supply cryogen to the device. The system further includes flow control valving configured to selectively isolate the cryogen cooling system from the device, thereby directing a flow of cryogen to the device from the cryogen storage system.

Laskaris, Evangelos Trifon; Urbahn, John Arthur; Steinbach, Albert Eugene

2013-08-20T23:59:59.000Z

127

Measurement of steam quality in two-phase critical flow  

E-Print Network (OSTI)

through a venturi for subczitical flow of steam-water 45 13 Steam quality as a function of vapor-phase Reynolds number for subczitical flow of steam-water 46 14 Steam quality as a function of Collins and Gacesa parameter for subcritical flow of steam... high degree of accuracy. He suggested that the following correlation may be used to calculate two-phase flow rates through orifices to within an error of 1. 5 percent 339 K 3 9 9' J 9 v v a v w f + [ 1. 26 (1-f ) K Y /K ] ~p p where V and L...

Sinclair, John William

2012-06-07T23:59:59.000Z

128

Low volume flow meter  

DOE Patents (OSTI)

The low flow monitor provides a means for determining if a fluid flow meets a minimum threshold level of flow. The low flow monitor operates with a minimum of intrusion by the flow detection device into the flow. The electrical portion of the monitor is externally located with respect to the fluid stream which allows for repairs to the monitor without disrupting the flow. The electronics provide for the adjustment of the threshold level to meet the required conditions. The apparatus can be modified to provide an upper limit to the flow monitor by providing for a parallel electronic circuit which provides for a bracketing of the desired flow rate.

Meixler, Lewis D. (East Windsor, NJ)

1993-01-01T23:59:59.000Z

129

Electrochromic devices  

DOE Patents (OSTI)

An electrochromic device is disclosed having a selective ion transport layer which separates an electrochemically active material from an electrolyte containing a redox active material. The devices are particularly useful as large area architectural and automotive glazings due to there reduced back reaction.

Allemand, Pierre M. (Tucson, AZ); Grimes, Randall F. (Ann Arbor, MI); Ingle, Andrew R. (Tucson, AZ); Cronin, John P. (Tucson, AZ); Kennedy, Steve R. (Tuscon, AZ); Agrawal, Anoop (Tucson, AZ); Boulton, Jonathan M. (Tucson, AZ)

2001-01-01T23:59:59.000Z

130

Nonaqueous Electrical Storage Device  

DOE Patents (OSTI)

An electrochemical capacitor is disclosed that features two, separated, high surface area carbon cloth electrodes sandwiched between two current collectors fabricated of a conductive polymer having a flow temperature greater than 130.degree. C., the perimeter of the electrochemical capacitor being sealed with a high temperature gasket to form a single cell device. The gasket material is a thermoplastic stable at temperatures greater than 100.degree. C., preferably a polyester or a polyurethane, and having a reflow temperature above 130.degree. C. but below the softening temperature of the current collector material. The capacitor packaging has good mechanical integrity over a wide temperature range, contributes little to the device equivalent series resistance (ESR), and is stable at high potentials. In addition, the packaging is designed to be easily manufacturable by assembly line methods. The individual cells can be stacked in parallel or series configuration to reach the desired device voltage and capacitance.

McEwen, Alan B. (Melrose, MA); Evans, David A. (Seekonk, MA); Blakley, Thomas J. (Woburn, MA); Goldman, Jay L. (Mansfield, MA)

1999-10-26T23:59:59.000Z

131

A Sub-grid Model for an Array of Immersed Cylinders in Coarse-grid Multiphase Flow Simulations of a Carbon Capture Device  

SciTech Connect

A post-combustion carbon-capture system utilizing a bubbling fluidized bed of sorbent particles is currently being developed as a part of the Carbon Capture and Simulation Initiative (CCSI) efforts. Adsorption of carbon dioxide (CO2) by these amine based sorbent particles is exothermic and arrays of immersed cylindrical heat transfer tubes are often utilized to maintain the lower temperatures favorable for CO2 capture. In multiphase computational fluid dynamics (CFD) simulations of the full-scale devices, which can be up to 10 m in size, approximately 103 cells are required in each dimension to accurately resolve the cylindrical tubes, which are only a few centimeters in diameter. Since the tubes cannot be resolved explicitly in CFD simulations, alternate methods to account for the influence of these immersed objects need to be developed.

Sarkar, Avik; Sun, Xin; Sundaresan, Sankaran

2012-12-01T23:59:59.000Z

132

Thermal Energy Measurement with Tangential Paddlewheel Flow Meters: Summary of Experimental Results and in-situ Diagnostics  

E-Print Network (OSTI)

paddlewheel flow meters, and several new methods for in-situ diagnostic measures for ascertaining whether or not a flow meter is experiencing fluctuating flow conditions or if a flow meter is suffering a degraded signal due to shaft wear. INTRODUCTION Flow... section where it passes across the candidate sensor that is placed in the inter-changeable test section, through the orifice plate and finally into the is combined with Btu meter the threshold can be much higher than the published threshold of the flow...

Haberl, J. S.; Watt, J. B.

1994-01-01T23:59:59.000Z

133

Detection device  

DOE Patents (OSTI)

The present invention is directed to a detection device comprising: (1) an entrance chamber, (2) a central chamber, and (3) an exit chamber. The central chamber includes an ionizing gas, anode, and means for connecting the anode with an external power supply and pulse counter.

Smith, Jay E. (Pittsburgh, PA)

1984-01-01T23:59:59.000Z

134

MICROFLUIDIC DEVICE WITH INTEGRATED ANTIBODY ARRAYS FOR CELL SIGNALLING  

E-Print Network (OSTI)

MICROFLUIDIC DEVICE WITH INTEGRATED ANTIBODY ARRAYS FOR CELL SIGNALLING ANALYSIS J. El-Ali1 , S we present the integration of protein arrays with a microfluidic device for analysis of cell a microfluidic segmented flow device that could achieve rapid stimulus and lysis of cells [1][2]. The device had

135

Laser device  

DOE Patents (OSTI)

A laser device includes a virtual source configured to aim laser energy that originates from a true source. The virtual source has a vertical rotational axis during vertical motion of the virtual source and the vertical axis passes through an exit point from which the laser energy emanates independent of virtual source position. The emanating laser energy is collinear with an orientation line. The laser device includes a virtual source manipulation mechanism that positions the virtual source. The manipulation mechanism has a center of lateral pivot approximately coincident with a lateral index and a center of vertical pivot approximately coincident with a vertical index. The vertical index and lateral index intersect at an index origin. The virtual source and manipulation mechanism auto align the orientation line through the index origin during virtual source motion.

Scott, Jill R. (Idaho Falls, ID); Tremblay, Paul L. (Idaho Falls, ID)

2008-08-19T23:59:59.000Z

136

The effects of expansion devices on the transient response characteristics of the air-source heat pump during the reverse cycle defrost  

E-Print Network (OSTI)

Superheat/Subcooling for T-24, T-26 Refrigerant Flow for TXV ()57 (Base Case) 99 6. 2 6. 3 Superheat/Subcooling for T-24, T-26 & Refrigerant Flow for ORF 090. TXV ()57 Inlet Pressure and Subcooling (Base Case) 99 101 6. 4 6. 5 ORF 090 Inlet... Pressure and Subcooling Graph of Defrost Times in Relation to Orifice Size. 101 104 6. 6 6. 8 6. 9 Superheat/Subcooling for T-24, T-26 & Refrigerant Flow for ORF OPEN Superheat/Subcooling for T-24, T-26 & Refrigerant Flow for ORF 059. Refrigerant...

Peterson, Kurt T.

2012-06-07T23:59:59.000Z

137

System and method for networking electrochemical devices  

DOE Patents (OSTI)

An improved electrochemically active system and method including a plurality of electrochemical devices, such as fuel cells and fluid separation devices, in which the anode and cathode process-fluid flow chambers are connected in fluid-flow arrangements so that the operating parameters of each of said plurality of electrochemical devices which are dependent upon process-fluid parameters may be individually controlled to provide improved operating efficiency. The improvements in operation include improved power efficiency and improved fuel utilization in fuel cell power generating systems and reduced power consumption in fluid separation devices and the like through interstage process fluid parameter control for series networked electrochemical devices. The improved networking method includes recycling of various process flows to enhance the overall control scheme.

Williams, Mark C. (Morgantown, WV); Wimer, John G. (Morgantown, WV); Archer, David H. (Pittsburgh, PA)

1995-01-01T23:59:59.000Z

138

Mobile Device Guide Google Android based devices  

E-Print Network (OSTI)

Mobile Device Guide ­ Google Android based devices CSUF Date Last Revised: 1/20/11 Page 1 of 3;Mobile Device Guide ­ Google Android based devices CSUF Date Last Revised: 1/20/11 Page 2 of 3 2. Under' with your campus username and enter your password (case sensitive). 4. Tap `next'. #12;Mobile Device Guide

de Lijser, Peter

139

Electrochromic device  

DOE Patents (OSTI)

An electrochromic device includes a first substrate spaced from a second substrate. A first conductive member is formed over at least a portion of the first substrate. A first electrochromic material is formed over at least a portion of the first conductive member. The first electrochromic material includes an organic material. A second conductive member is formed over at least a portion of the second substrate. A second electrochromic material is formed over at least a portion of the second conductive member. The second electrochromic material includes an inorganic material. An ionic liquid is positioned between the first electrochromic material and the second electrochromic material.

Schwendemanm, Irina G. (Wexford, PA); Polcyn, Adam D. (Pittsburgh, PA); Finley, James J. (Pittsburgh, PA); Boykin, Cheri M. (Kingsport, TN); Knowles, Julianna M. (Apollo, PA)

2011-03-15T23:59:59.000Z

140

OLED devices  

DOE Patents (OSTI)

An OLED device having an emission layer formed of an ambipolar phosphine oxide host material and a dopant, a hole transport layer in electrical communication with an anode, an electron transport layer in communication with a cathode, wherein the HOMO energy of the hole transport layer is substantially the same as the HOMO energy of the ambipolar host in the emission layer, and the LUMO energy of the electron transport layer is substantially the same as the LUMO energy of the ambipolar host in the emission layer.

Sapochak, Linda Susan [Arlington, VA; Burrows, Paul Edward [Kennewick, WA; Bimalchandra, Asanga [Richland, WA

2011-02-22T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Diversionary device  

DOE Patents (OSTI)

A diversionary device has a housing having at least one opening and containing a non-explosive propellant and a quantity of fine powder packed within the housing, with the powder being located between the propellant and the opening. When the propellant is activated, it has sufficient energy to propel the powder through the opening to produce a cloud of powder outside the housing. An igniter is also provided for igniting the cloud of powder to create a diversionary flash and bang, but at a low enough pressure to avoid injuring nearby people.

Grubelich, Mark C. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

142

Interconnector device  

SciTech Connect

This patent describes an interconnector device that allows a lithium-type battery to be substituted for a Leclanche battery. The Leclanche battery is of predetermined dimensions and has a pair of coil spring connection terminals at predetermined locations on the top surface thereof. The lithium battery of different predetermined dimensions than the Lechanche battery and has a pair of female connection sockets positioned at a predetermined off-center location on the top surface. The locations of the coil spring terminals and the connection sockets of the respective batteries are at substantially different non-matching positions, comprising a thin flat water of non-conducive material of predetermined size and configuration, the wafer having the same cross-section dimensions as the Leclanche battery. A pair of prongs on the underside surface of the wafer and at locations correspond to the locations of the female connection sockets of the lithium battery. The prongs received into the female connection sockets when the interconnector device is mounted on the lithium batter. A pair of coil spring connection terminals mounted on the opposite of top surface of the wafer and having a configuration which matches that of the connection terminals of the Leclanche battery and positioned at locations which corresponds to the locations of the coil spring connection terminals of the Leclanche battery. A pair of electrical conductors plated on the underside surface of the wafer for respectively interconnecting the pairs of prongs and the pair of coil spring connection terminals in parallel.

Christopulos, J.A.

1987-07-07T23:59:59.000Z

143

Optoelectronic device  

DOE Patents (OSTI)

The invention is an optoelectronic device comprising an active portion which converts light to electricity or converts electricity to light, the active portion having a front side for the transmittal of the light and a back side opposite from the front side, at least two electrical leads to the active portion to convey electricity to or from the active portion, an enclosure surrounding the active portion and through which the at least two electrical leads pass wherein the hermetically sealed enclosure comprises at the front side of the active portion a barrier material which allows for transmittal of light, one or more getter materials disposed so as to not impede the transmission of light to or from the active portion, and a contiguous gap pathway to the getter material which pathway is disposed between the active portion and the barrier material.

Bonekamp, Jeffrey E.; Boven, Michelle L.; Gaston, Ryan S.

2014-09-09T23:59:59.000Z

144

Inertial impaction air sampling device  

DOE Patents (OSTI)

An inertial impactor is designed which is to be used in an air sampling device for collection of respirable size particles in ambient air. The device may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

Dewhurst, K.H.

1990-05-22T23:59:59.000Z

145

Evaluation of a CFD-model for simulation of simplified flow conditioners  

SciTech Connect

Perforated plate flow conditioners are used to generate a fully developed turbulent flow profile upstream of an orifice meter. It is very time-consuming to measure the effect of a flow conditioner for different upstream flow profiles. Therefore a project is initiated to evaluate the performance of a computational fluid computer code for this purpose. If the code correctly predicts the flow characteristics downstream of more complex flow conditioners. In this study a k-{var_epsilon} CFD-model was used to predict the flow downstream of obstruction plates having one large or nine small holes. Both mean velocity, turbulent kinetic energy, k, and the dissipation rate of turbulent kinetic energy, {var_epsilon}, were calculated and compared against measured data. The results indicate that it is possible to predict the mean velocity well and that the accuracy of the predicted k and {var_epsilon} depends on the complexity of the flow.

Erdal, A. [Statoil/K-LAB, Haugesund (Norway); Torbergsen, L.E.; Rimestad, S.; Krogstad, P.A. [Norwegian Inst. of Technology, Trondheim (Norway)

1995-12-31T23:59:59.000Z

146

Performance of Installed Cooking Exhaust Devices  

SciTech Connect

The performance metrics of airflow, sound, and combustion product capture efficiency (CE) were measured for a convenience sample of fifteen cooking exhaust devices, as installed in residences. Results were analyzed to quantify the impact of various device- and installation-dependent parameters on CE. Measured maximum airflows were 70% or lower than values noted on product literature for 10 of the devices. Above-the-cooktop devices with flat bottom surfaces (no capture hood) – including exhaust fan/microwave combination appliances – were found to have much lower CE at similar flow rates, compared to devices with capture hoods. For almost all exhaust devices and especially for rear-mounted downdraft exhaust and microwaves, CE was substantially higher for back compared with front burner use. Flow rate, and the extent to which the exhaust device extends over the burners that are in use, also had a large effect on CE. A flow rate of 95 liters per second (200 cubic feet per minute) was necessary, but not sufficient, to attain capture efficiency in excess of 75% for the front burners. A-weighted sound levels in kitchens exceeded 57 dB when operating at the highest fan setting for all 14 devices evaluated for sound performance.

Singer, Brett C.; Delp, William W.; Apte, Michael G.; Price, Philip N.

2011-11-01T23:59:59.000Z

147

Performance of Installed Cooking Exhaust Devices  

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

Performance of Installed Cooking Exhaust Devices Performance of Installed Cooking Exhaust Devices Title Performance of Installed Cooking Exhaust Devices Publication Type Journal Article Refereed Designation Refereed LBNL Report Number LBNL-5265E Year of Publication 2012 Authors Singer, Brett C., William W. Delp, Michael G. Apte, and Phillip N. Price Journal Indoor Air Volume 22 Issue 3 Pagination 224-234 Date Published 06/2012 Keywords carbon monoxide, natural gas burners, nitrogen dioxide, range hood, task ventilation, unvented combustion, indoor environment group, Range Hood Test Facility Abstract The performance metrics of airflow, sound, and combustion product capture efficiency (CE) were measured for a convenience sample of fifteen cooking exhaust devices, as installed in residences. Results were analyzed to quantify the impact of various device- and installation-dependent parameters on CE. Measured maximum airflows were 70% or lower than values noted on product literature for 10 of the devices. Above-the-cooktop devices with flat bottom surfaces (no capture hood) - including exhaust fan/microwave combination appliances - were found to have much lower CE at similar flow rates, compared to devices with capture hoods. For almost all exhaust devices and especially for rear-mounted downdraft exhaust and microwaves, CE was substantially higher for back compared with front burner use. Flow rate, and the extent to which the exhaust device extends over the burners that are in use, also had a large effect on CE. A flow rate of 95 liters per second (200 cubic feet per minute) was necessary, but not sufficient, to attain capture efficiency in excess of 75% for the front burners. A-weighted sound levels in kitchens exceeded 57 dB when operating at the highest fan setting for all 14 devices evaluated for sound performance.

148

Connector device for building integrated photovoltaic device  

SciTech Connect

The present invention is premised upon a connector device and method that can more easily electrically connect a plurality of PV devices or photovoltaic system components and/or locate these devices/components upon a building structure. It also may optionally provide some additional sub-components (e.g. at least one bypass diode and/or an indicator means) and may enhance the serviceability of the device.

Keenihan, James R.; Langmaid, Joseph A.; Eurich, Gerald K.; Lesniak, Michael J.; Mazor, Michael H.; Cleereman, Robert J.; Gaston, Ryan S.

2014-06-03T23:59:59.000Z

149

Numerical simulation of electrokinetically driven micro flows  

E-Print Network (OSTI)

Spectral element based numerical solvers are developed to simulate electrokinetically driven flows for micro-fluidic applications. Based on these numerical solvers, basic phenomena and devices for electrokinetic applications in micro and nano flows...

Hahm, Jungyoon

2005-11-01T23:59:59.000Z

150

Evaluation of flow hood measurements for residential register flows  

SciTech Connect

Flow measurement at residential registers using flow hoods is becoming more common. These measurements are used to determine if the HVAC system is providing adequate comfort, appropriate flow over heat exchangers and in estimates of system energy losses. These HVAC system performance metrics are determined by using register measurements to find out if individual rooms are getting the correct airflow, and in estimates of total air handler flow and duct air leakage. The work discussed in this paper shows that commercially available flow hoods are poor at measuring flows in residential systems. There is also evidence in this and other studies that flow hoods can have significant errors even when used on the non-residential systems they were originally developed for. The measurement uncertainties arise from poor calibrations and the sensitivity of exiting flow hoods to non-uniformity of flows entering the device. The errors are usually large--on the order of 20% of measured flow, which is unacceptably high for most applications. Active flow hoods that have flow measurement devices that are insensitive to the entering airflow pattern were found to be clearly superior to commercially available flow hoods. In addition, it is clear that current calibration procedures for flow hoods may not take into account any field application problems and a new flow hood measurement standard should be developed to address this issue.

Walker, I.S.; Wray, C.P.; Dickerhoff, D.J.; Sherman, M.H.

2001-09-01T23:59:59.000Z

151

Lithium pellet production (LiPP): A device for the production of small spheres of lithium  

SciTech Connect

With lithium as a fusion material gaining popularity, a method for producing lithium pellets relatively quickly has been developed for NSTX. The Lithium Pellet Production device is based on an injector with a sub-millimeter diameter orifice and relies on a jet of liquid lithium breaking apart into small spheres via the Plateau-Rayleigh instability. A prototype device is presented in this paper and for a pressure difference of {Delta}P= 5 Torr, spheres with diameters between 0.91 < D < 1.37 mm have been produced with an average diameter of D= 1.14 mm, which agrees with the developed theory. Successive tests performed at Princeton Plasma Physics Laboratory with Wood's metal have confirmed the dependence of sphere diameter on pressure difference as predicted.

Fiflis, P.; Andrucyzk, D.; McGuire, M.; Curreli, D.; Ruzic, D. N. [Center for Plasma Material Interactions, Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States); Roquemore, A. L. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540 (United States)

2013-06-15T23:59:59.000Z

152

Effect of a 90° Elbow on the Accuracy of an Insertion Flowmeter, Results and Comparisons for 4 and 6 in. Diameter PVC Pipe  

E-Print Network (OSTI)

Thermal energy consumption in buildings with chilled or hot water distribution systems is often monitored through the use of some type of flow metering device. These flowmeters can be fixed types, such as venturis or orifices, or insertion...

Bryant, J. A.; O'Neal, D. L.

1996-01-01T23:59:59.000Z

153

Nature Macmillan Publishers Ltd 1998 Fluid `rope trick'  

E-Print Network (OSTI)

with a charge- coupled device camera was used to measure the filament radius with an accuracy of 1%. All flow in the neighbourhood of the orifice, air drag, non-Newtonian effects and the effect of gravity

Mahadevan, L.

154

TI 176A Calibration of Audit Devices using Spirometer TABLE OF CONTENTS  

E-Print Network (OSTI)

............................................................................................................... 4 4.1 Orifice Meter Theory .................................................................................... 4 4.2 Calibration of an Orifice Meter Using the Spirometer .................................... 5 4, Collins, Catalog #06031, 8 Liter capacity, accuracy ±1% · Spirometer chart paper, Catalog #22035

Fischer, Emily V.

155

Passive gas separator and accumulator device  

DOE Patents (OSTI)

A separation device employing a gas separation filter and swirler vanes for separating gas from a gasliquid mixture is provided. The cylindrical filter utilizes the principle that surface tension in the pores of the filter prevents gas bubbles from passing through. As a result, the gas collects in the interior region of the filter and coalesces to form larger bubbles in the center of the device. The device is particularly suited for use in microgravity conditions since the swirlers induce a centrifugal force which causes liquid to move from the inner region of the filter, pass the pores, and flow through the outlet of the device while the entrained gas is trapped by the filter. The device includes a cylindrical gas storage screen which is enclosed by the cylindrical gas separation filter. The screen has pores that are larger than those of the filters. The screen prevents larger bubbles that have been formed from reaching and interfering with the pores of the gas separation filter. The device is initially filled with a gas other than that which is to be separated. This technique results in separation of the gas even before gas bubbles are present in the mixture. Initially filling the device with the dissimilar gas and preventing the gas from escaping before operation can be accomplished by sealing the dissimilar gas in the inner region of the separation device with a ruptured disc which can be ruptured when the device is activated for use.

Choe, Hwang (Saratoga, CA); Fallas, Thomas T. (Berkeley, CA)

1994-01-01T23:59:59.000Z

156

Passive gas separator and accumulator device  

DOE Patents (OSTI)

A separation device employing a gas separation filter and swirler vanes for separating gas from a gas-liquid mixture is provided. The cylindrical filter utilizes the principle that surface tension in the pores of the filter prevents gas bubbles from passing through. As a result, the gas collects in the interior region of the filter and coalesces to form larger bubbles in the center of the device. The device is particularly suited for use in microgravity conditions since the swirlers induce a centrifugal force which causes liquid to move from the inner region of the filter, pass the pores, and flow through the outlet of the device while the entrained gas is trapped by the filter. The device includes a cylindrical gas storage screen which is enclosed by the cylindrical gas separation filter. The screen has pores that are larger than those of the filters. The screen prevents larger bubbles that have been formed from reaching and interfering with the pores of the gas separation filter. The device is initially filled with a gas other than that which is to be separated. This technique results in separation of the gas even before gas bubbles are present in the mixture. Initially filling the device with the dissimilar gas and preventing the gas from escaping before operation can be accomplished by sealing the dissimilar gas in the inner region of the separation device with a ruptured disc which can be ruptured when the device is activated for use. 3 figs.

Choe, H.; Fallas, T.T.

1994-08-02T23:59:59.000Z

157

Multiphase Flow Modeling Research  

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

Science Science Chris Guenther, Director Computational Science Division RUA Spring Meeting, Morgantown, WV March 2013 2 NETL's Multiphase Flow Science Team * The Multiphase Flow Science Team develops physics-based simulation models to conduct applied scientific research. - Development of new theory - Extensive on-site and collaborative V&V efforts and testing - Engages in technology transfer - Applies the models to industrial scale problems. 3 Why is Multiphase Flow Science Needed? * Industry is increasingly relying on multiphase technologies to produce clean and affordable energy with carbon capture. * Unfortunately, the presence of a solid phase reduces the operating capacity of a typical energy device from its original design on average by 40% [1].

158

Inertial impaction air sampling device  

DOE Patents (OSTI)

An inertial impactor to be used in an air sampling device for collection of respirable size particles in ambient air which may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

Dewhurst, K.H.

1987-12-10T23:59:59.000Z

159

Inertial impaction air sampling device  

DOE Patents (OSTI)

An inertial impactor to be used in an air sampling device for collection of respirable size particles in ambient air which may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry.

Dewhurst, Katharine H. (13150 Wenonah SE. Apt. 727, Albuquerque, NM 87123)

1990-01-01T23:59:59.000Z

160

MHK Technologies/The Multi Energy Device | Open Energy Information  

Open Energy Info (EERE)

The Multi Energy Device.jpg The Multi Energy Device.jpg Technology Profile Primary Organization Ing Arvid Nesheim Technology Resource Click here Wave Technology Type Click here Point Absorber - Floating Technology Readiness Level Click here TRL 5 6 System Integration and Technology Laboratory Demonstration Technology Description The Multi Energy Device utilizes pressure differences to create a water flow that drives a water turbine and generator The water turbine can be integrated into the device or can be situated onshore using a flexible pipe between the device and water turbine The pressure differential is obtained by creating high pressure at one part of the device and low pressure at the other part of the device resulting in a water flow from the high to low pressure through the water turbine Low water pressure in the device occurs due to drag and inertia forces and the increased velocity of the water flowing past the device The degree of reduction in water pressure is related to the amount of kinetic energy of the water mass acting on the device

Note: This page contains sample records for the topic "flow orifice devices" 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

Bipolar thermoelectric devices  

E-Print Network (OSTI)

The work presented here is a theoretical and experimental study of heat production and transport in bipolar electrical devices, with detailed treatment of thermoelectric effects. Both homojunction and heterojunction devices ...

Pipe, Kevin P. (Kevin Patrick), 1976-

2004-01-01T23:59:59.000Z

162

Pulse flux measuring device  

DOE Patents (OSTI)

A device for measuring particle flux comprises first and second photodiode detectors for receiving flux from a source and first and second outputs for producing first and second signals representing the flux incident to the detectors. The device is capable of reducing the first output signal by a portion of the second output signal, thereby enhancing the accuracy of the device. Devices in accordance with the invention may measure distinct components of flux from a single source or fluxes from several sources.

Riggan, William C. (Albuquerque, NM)

1985-01-01T23:59:59.000Z

163

Pulse detecting device  

DOE Patents (OSTI)

A device for measuring particle flux comprises first and second photodiode detectors for receiving flux from a source and first and second outputs for producing first and second signals representing the flux incident to the detectors. The device is capable of reducing the first output signal by a portion of the second output signal, thereby enhancing the accuracy of the device. Devices in accordance with the invention may measure distinct components of flux from a single source or fluxes from several sources.

Riggan, W.C.

1984-01-01T23:59:59.000Z

164

Propulsion devices for locomotion at low-Reynolds number  

E-Print Network (OSTI)

We have designed, built, and tested three novel devices that use low-Reynolds number flows for self propulsion. The three-link swimmer is designed to swim through in a free viscous fluid using cyclic flipping motion of two ...

Chan, Brian, 1980-

2004-01-01T23:59:59.000Z

165

Photonic Device Layout Within the Foundry CMOS Design Environment  

E-Print Network (OSTI)

A design methodology to layout photonic devices within standard electronic complementary metal-oxide-semiconductor (CMOS) foundry data preparation flows is described. This platform has enabled the fabrication of designs ...

Orcutt, Jason Scott

166

Articulating feedstock delivery device  

DOE Patents (OSTI)

A fully articulable feedstock delivery device that is designed to operate at pressure and temperature extremes. The device incorporates an articulating ball assembly which allows for more accurate delivery of the feedstock to a target location. The device is suitable for a variety of applications including, but not limited to, delivery of feedstock to a high-pressure reaction chamber or process zone.

Jordan, Kevin

2013-11-05T23:59:59.000Z

167

Organic photosensitive devices  

DOE Patents (OSTI)

The present invention generally relates to organic photosensitive optoelectronic devices. More specifically, it is directed to organic photosensitive optoelectronic devices having a photoactive organic region containing encapsulated nanoparticles that exhibit plasmon resonances. An enhancement of the incident optical field is achieved via surface plasmon polariton resonances. This enhancement increases the absorption of incident light, leading to a more efficient device.

Rand, Barry P; Forrest, Stephen R

2013-11-26T23:59:59.000Z

168

Mobile Device Guide Apple iPhone Devices  

E-Print Network (OSTI)

Mobile Device Guide ­ Apple iPhone Devices CSUF Date Last Revised: 1/20/11 Page 1 of 3 ConnectingPhone desktop. 1a. Expand `Mail, Contacts, Calendars' as shown. #12;Mobile Device Guide ­ Apple iPhone Devices (case sensitive). 4. Tap `next'. #12;Mobile Device Guide ­ Apple iPhone Devices CSUF Date Last Revised

de Lijser, Peter

169

Instrumentation of a light twin aircraft for flow energizer flight tests  

E-Print Network (OSTI)

pressure measurements were repeatable even From different flights, although near the nacelles spanwise Flow produced up to 127 uncertainty in Cp at the leading edge pressure orifice. In addition, pressure measurements were compared to wind tunnel.... . . . . . . . . . . , . . 39 41 20 Cp Compar i son Measured at Row A Cp Comparison Measured at Row B. Z2. Cp Comparison Measured at Row C. Cp Compar i son Measured at Row 0. 47 48 49 50 ix Figure 24 Comparison of Predicted, Wind Tunnel Test, and Flight Test Cp...

Binford, Robert Susumu

2012-06-07T23:59:59.000Z

170

Barrier breaching device  

DOE Patents (OSTI)

A barrier breaching device that is designed primarily for opening holes in interior walls of buildings uses detonating fuse for explosive force. The fuse acts as the ribs or spokes of an umbrella-like device that may be opened up to form a cone. The cone is placed against the wall so that detonating fuse that rings the base of the device and which is ignited by the spoke-like fuses serves to cut a circular hole in the wall.

Honodel, Charles A. (Tracy, CA)

1985-01-01T23:59:59.000Z

171

Barrier breaching device  

DOE Patents (OSTI)

A barrier breaching device that is designed primarily for opening holes in interior walls of buildings uses detonating fuse for explosive force. The fuse acts as the ribs or spokes of an umbrella-like device that may be opened up to form a cone. The cone is placed against the wall so that detonating fuse that rings the base of the device and which is ignited by the spoke-like fuses serves to cut a circular hole in the wall.

Honodel, C.A.

1983-06-01T23:59:59.000Z

172

Cotton flow  

E-Print Network (OSTI)

Using the conformally invariant Cotton tensor, we define a geometric flow, the "Cotton flow", which is exclusive to three dimensions. This flow tends to evolve the initial metrics into conformally flat ones, and is somewhat orthogonal to the Yamabe flow, the latter being a flow within a conformal class. We define an entropy functional, and study the flow of nine homogeneous spaces both numerically and analytically. In particular, we show that the arbitrarily deformed homogeneous 3-sphere flows into the round 3-sphere. Two of the nine homogeneous geometries, which are degenerated by the Ricci flow, are left intact by the Cotton flow.

Ali Ulas Ozgur Kisisel; Ozgur Sarioglu; Bayram Tekin

2008-06-17T23:59:59.000Z

173

Active Terahertz Metamaterial Devices  

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

Active Terahertz Metamaterial Devices Active Terahertz Metamaterial Devices Active Terahertz Metamaterial Devices Metamaterial structures are taught which provide for the modulation of terahertz frequency signals. Available for thumbnail of Feynman Center (505) 665-9090 Email Active Terahertz Metamaterial Devices Metamaterial structures are taught which provide for the modulation of terahertz frequency signals. Each element within an array of metamaterial (MM) elements comprises multiple loops and at least one gap. The MM elements may comprise resonators with conductive loops and insulated gaps, or the inverse in which insulated loops are present with conductive gaps; each providing useful transmissive control properties. The metamaterial elements are fabricated on a semiconducting substrate configured with a

174

Composite Thermoelectric Devices  

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

Composite thermoelectric devices incorporating common conductors laminated between P- and N-type thermoelectric plates demonstrate internal ohmic loss reduction and enhanced performance

175

Mobile Device Management Android Device Enrollment  

E-Print Network (OSTI)

to manage your device. c. Enter your password. #12;d. Accept the Terms and Conditions e. You have completed. 2. Get Touchdown from Google Play a. Open up the Google Play Store. b. Search for Touchdown. c. Use the application. #12;3. Get Citrix Mobile Connect from Google Play a. Open up the Google Play Store. b. Search

176

Countercurrent flow absorber and desorber  

DOE Patents (OSTI)

Countercurrent flow absorber and desorber devices are provided for use in absorption cycle refrigeration systems and thermal boosting systems. The devices have increased residence time and surface area resulting in improved heat and mass transfer characteristics. The apparatuses may be incorporated into open cycle thermal boosting systems in which steam serves both as the refrigerant vapor which is supplied to the absorber section and as the supply of heat to drive the desorber section of the system. 9 figs.

Wilkinson, W.H.

1984-10-16T23:59:59.000Z

177

Pulse charging device  

SciTech Connect

This paper describes a device for pulse charging of capacitor storage devices of high-power nanosecond generators. The charging voltage reaches 30 kV, the charged capacitance is 2-100 nF, the charging time is 5-10 usec, the pulse frequency reaches 10 kHz, and the average power of the device is 15 kW. The device uses two-section oscillatory charging of the capacitors from a dc supply through high-speed thyristors and a pulse transformer. The described device is intended for use as part of a test bench for high-power nanosecond pulse generators for pumping gas lasers and their components.

Butakov, L.D.; Dubich, V.K.; Lashuk, N.A.; Shubkin, N.G.; Vizir', V.A.

1986-03-01T23:59:59.000Z

178

Planar electrochemical device assembly  

DOE Patents (OSTI)

A pre-fabricated electrochemical device having a dense electrolyte disposed between an anode and a cathode preferably deposited as thin films is bonded to a porous electrically conductive support. A second porous electrically conductive support may be bonded to a counter electrode of the electrochemical device. Multiple electrochemical devices may be bonded in parallel to a single porous support, such as a perforated sheet to provide a planar array. Planar arrays may be arranged in a stacked interconnected array. A method of making a supported electrochemical device is disclosed wherein the method includes a step of bonding a pre-fabricated electrochemical device layer to an existing porous metal or porous metal alloy layer.

Jacobson; Craig P. (Lafayette, CA), Visco; Steven J. (Berkeley, CA), De Jonghe; Lutgard C. (Lafayette, CA)

2010-11-09T23:59:59.000Z

179

Two-phase fluid flow through nozzles and abrupt enlargements  

SciTech Connect

The behavior of a fluid undergoing a phase change from liquid to vapor while flowing through a duct is of interest to engineers in many practical situations. For the case of interest to us, geothermal hot water flowing through various channels (well bores, surface pipes, equipment, etc.) may reach its flash point and choke point under appropriate conditions. The proper design of energy conversion systems depends on the ability of the engineer to predict this behavior with an acceptable degree of accuracy. The present study was in part motivated by the task of designing the blow-down, two-phase fluid flow test facility at Brown University. In that facility, a refrigerant (dichlorotetrafluoroethane or R-114) is boosted to a selected stagnation state and allowed to flow through a nozzle orifice into a long straight tube. The operation relies on the fluid being choked at the inlet section, and under certain circumstances, at the downstream section as well. A simple schematic of the test section is shown. This paper treats the problem generically and analytically, making use of the basic laws of fluid mechanics and thermodynamics. Specific calculations have been performed using R-114 as the flowing medium. They attempt to identify and describe all possible flow conditions in and downstream of the nozzle for all possible stagnation conditions.

Olia, H.; Maeder, P.F.; DiPippo, R.; Dickinson, D.A.

1983-10-01T23:59:59.000Z

180

Radionuclide detection devices and associated methods  

DOE Patents (OSTI)

Radionuclide detection devices comprise a fluid cell comprising a flow channel for a fluid stream. A radionuclide collector is positioned within the flow channel and configured to concentrate one or more radionuclides from the fluid stream onto at least a portion of the radionuclide collector. A scintillator for generating scintillation pulses responsive to an occurrence of a decay event is positioned proximate at least a portion of the radionuclide collector and adjacent to a detection system for detecting the scintillation pulses. Methods of selectively detecting a radionuclide are also provided.

Mann, Nicholas R. (Rigby, ID); Lister, Tedd E. (Idaho Falls, ID); Tranter, Troy J. (Idaho Falls, ID)

2011-03-08T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Unipolar arc simulation device  

SciTech Connect

We describe a simple laboratory device for establishing a vacuum arc plasma discharge that can serve to simulate a unipolar arc. The technique makes use of a triggered vacuum arc plasma gun to generate a plasma plume that in turn causes breakdown of a secondary discharge. The device is in fact a secondary vacuum arc discharge that is triggered by a primary vacuum arc discharge, with some of the features of the secondary plasma discharge having similarities with a unipolar arc configuration. Here we describe the experimental setup and outline how the device can be used for some areas of unipolar arc materials research. [copyright] [ital 1999 American Institute of Physics.

Wang, S.G.; Brown, I.G. (Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States))

1999-09-01T23:59:59.000Z

182

Wireless device monitoring systems and monitoring devices, and associated methods  

DOE Patents (OSTI)

Wireless device monitoring systems and monitoring devices include a communications module for receiving wireless communications of a wireless device. Processing circuitry is coupled with the communications module and configured to process the wireless communications to determine whether the wireless device is authorized or unauthorized to be present at the monitored area based on identification information of the wireless device. Methods of monitoring for the presence and identity of wireless devices are also provided.

McCown, Steven H; Derr, Kurt W; Rohde, Kenneth W

2014-05-27T23:59:59.000Z

183

Bring Your Own Device  

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

Bring your own Device, or BYOD, has been a popular topic for some time now. While government organizations and private companies continue to struggle with how to enjoy the business and economic...

184

Optical Signal Processing Devices  

Science Journals Connector (OSTI)

In the previous chapters we have presented advanced optoelectronic devices which performed a specific task: generation of coherent radiation, modulation, light detection or multi/demultiplexing. In this chapte...

Professor Daniela Dragoman; Professor Mircea Dragoman

1999-01-01T23:59:59.000Z

185

Multimaterial rectifying device fibers  

E-Print Network (OSTI)

Electronic and optoelectronic device processing is commonly thought to be incompatible with much simpler thermal drawing techniques used in optical fiber production. The incorporation of metals, polymer insulators, and ...

Orf, Nicholas D

2009-01-01T23:59:59.000Z

186

Ion Channels as Devices  

Science Journals Connector (OSTI)

Ion channels are proteins with a hole down ... biological function. Channels are devices in the engineering sense of the word and engineering analysis helps understand their function. In particular ... The curren...

Bob Eisenberg

2003-12-01T23:59:59.000Z

187

Multimaterial multifunctional fiber devices  

E-Print Network (OSTI)

Optical fibers and semiconductor devices differ significantly in their properties and their processing approaches. The latter require an assembly of metal, insulator and semiconductor materials into complex geometries with ...

Sorin, Fabien

2008-01-01T23:59:59.000Z

188

D0 Silicon Upgrade: Flowdyne Flow Element Information for D-Zero Upgrade  

SciTech Connect

This engineering note provides the information used for purchasing two venturi flowmeters and one orifice flowmeter. One venturi and one orifice performance curve is provided along with the purchasing information. Performance data is also given to supplement the performance curves.

Kuwazaki, Andrew; /Fermilab

1995-10-03T23:59:59.000Z

189

Pouring flows  

Science Journals Connector (OSTI)

Free surface flows of a liquid poured from a container are calculated numerically for various configurations of the lip. The flow is assumed to be steady two dimensional and irrotational; the liquid is treated as inviscid and incompressible; and gravity is taken into account. It is shown that there are jetlike flows with two free surfaces and other flows with one free surface which follow along the underside of the lip or spout. The latter flows occur in the well?known ‘‘teapot effect ’’ which was treated previously without including gravity. Some of the results are applicable also to flows over weirs and spillways.

Jean?Marc Vanden?Broeck; Joseph B. Keller

1986-01-01T23:59:59.000Z

190

Investigation of technology for the monitoring of UF/sub 6/ mass flow in UF/sub 6/ streams diluted with H/sub 2/  

SciTech Connect

The applicability, availability, and effectiveness of gas flow meters are assessed as a means for verifying the mass flows of pure UF/sub 6/ streams diluted with a carrier gas. The initial survey identified the orifice, pitot tube, thermal, vortex shedding, and vortex precession (swirl) meters as promising for the intended use. Subsequent assessments of these flow meters revealed that two - the orifice meter and the pitot tube meter - are the best choices for the proposed applications: the first is recommended for low velocity gas, small diameter piping; the latter, for high velocity gas, large diameter piping. Final selection of the gas flow meters should be based on test loop evaluations in which the proposed meters are subjected to gas flows, temperatures, and pressures representative of those expected in service. Known instruments are evaluated that may be applicable to the measurement of uranium or UF/sub 6/ concentration in a UF/sub 6/ - H/sub 2/ process stream at an aerodynamic enrichment plant. Of the six procedures evaluated, four have been used for process monitoring in a UF/sub 6/ environment: gas mass spectrometry, infrared-ultraviolet-visible spectrophotometry, gas chromatography, and acoustic gas analysis. The remaining two procedures, laser fluorimetry and atomic absorption spectroscopy, would require significant development work before they could be used for process monitoring. Infrared-ultravioloet-visible spectrophotometry is judged to be the best procedure currently available to perform the required measurement.

Baker, O.J.; Cooley, J.N.; Hewgley, W.A.; Moran, B.W.; Swindle, D.W. Jr.

1986-12-01T23:59:59.000Z

191

Electrical apparatus lockout device  

SciTech Connect

A simple lockout device for electrical equipment equipped with recessed power blades is described. The device comprises a face-plate (12) having a threaded member (14) attached thereto and apertures suitable for accommodating the power blades of a piece of electrical equipment, an elastomeric nose (16) abutting the face-plate having a hole for passage of the threaded member therethrough and power blade apertures in registration with those of the face-plate, a block (20) having a recess (34) in its forward face for receiving at least a portion of the hose, a hole therein for receiving the threaded member and an integral extension (26) extending from its rear face. A thumb screw (22) suitable for turning with the hands and having internal threads suitable for engaging the threaded member attached to the face-plate is inserted into a passage in the integral extension to engage the threaded member in such a fashion that when the device is inserted over the recessed power blades of a piece of electrical equipment and the thumb screw (22) tightened, the elastomeric nose (16) is compressed between the face-plate (12) and the block (20) forcing it to expand laterally thereby securing the device in the recess and precluding the accidental or intentional energization of the piece of equipment by attachment of a power cord to the recessed power blades. Means are provided in the interval extension and the thumb screw for the attachment of a locking device (46) which will satisfy OSHA standards.

Gonzales, R.

1999-10-12T23:59:59.000Z

192

Electrical apparatus lockout device  

DOE Patents (OSTI)

A simple lockout device for electrical equipment equipped with recessed power blades is described. The device comprises a face-plate (12) having a threaded member (14) attached thereto and apertures suitable for accommodating the power blades of a piece of electrical equipment, an elastomeric nose (16) abutting the face-plate having a hole for passage of the threaded member therethrough and power blade apertures in registration with those of the face-plate, a block (20) having a recess (34) in its forward face for receiving at least a portion of the hose, a hole therein for receiving the threaded member and an integral extension (26) extending from its rear face. A thumb screw (22) suitable for turning with the hands and having internal threads suitable for engaging the threaded member attached to the face-plate is inserted into a passage in the integral extension to engage the threaded member in such a fashion that when the device is inserted over the recessed power blades of a piece of electrical equipment and the thumb screw (22) tightened, the elastomeric nose (16) is compressed between the face-plate (12) and the block (20) forcing it to expand laterally thereby securing the device in the recess and precluding the accidental or intentional energization of the piece of equipment by attachment of a power cord to the recessed power blades. Means are provided in the interval extension and the thumb screw for the attachment of a locking device (46) which will satisfy OSHA standards.

Gonzales, Rick (Chesapeake, VA)

1999-01-01T23:59:59.000Z

193

Orifice mixing of immiscible liquids  

E-Print Network (OSTI)

measured with an Ostwald Viscosimeter relative to tap water also, All of these physical measurements were made at 83c F, the average tempera- ture noted during the runs. The liquid upon which these measurements were made were samples of the liquids...

McDonough, Joseph Aloysius

1960-01-01T23:59:59.000Z

194

DWPF Sampling Device Development Test Results and Design Recommendation  

SciTech Connect

This report summarizes the development and testing of a sample device for the DWPF sample cells. The clamp actuated manual Hydraguard valve used in conjunction with the concentric needle fill device is recommended for use in the DWPF. This is based on test results which indicate that this sampler is capable of obtaining samples within five percent of the solids concentration of the process stream at flow rates from 0.5 to 3.5 gpm.

Wilds, G.W.

2001-07-17T23:59:59.000Z

195

2005 Pearson Education South Asia Pte Ltd Applied Fluid Mechanics  

E-Print Network (OSTI)

system. · Describe four types of variable-head meters: the venturi tube, the flow nozzle, the orifice measure within the stated accuracy. · It is a measure of the meter's ability to function under all flow 15.2.2 Accuracy Required · Virtually any flow-measuring device properly installed and operated can

Leu, Tzong-Shyng "Jeremy"

196

Pressure-dependent Resonance Frequency for Lipid-coated Microbubbles at Low Acoustic  

E-Print Network (OSTI)

with diameters ranging from 1-10m, filled with gas of low water solubility (e.g. perfluorocarbon, nitrogen in this device, one for gas inlet flow, two for liquid inlet flow, and the last one for microbubbles outlet flow channel and gas channel were 50 m and 35 m, respectively, while the width of the orifice was 7 m. Figure 1

197

Fragment capture device  

DOE Patents (OSTI)

A fragment capture device for use in explosive containment. The device comprises an assembly of at least two rows of bars positioned to eliminate line-of-sight trajectories between the generation point of fragments and a surrounding containment vessel or asset. The device comprises an array of at least two rows of bars, wherein each row is staggered with respect to the adjacent row, and wherein a lateral dimension of each bar and a relative position of each bar in combination provides blockage of a straight-line passage of a solid fragment through the adjacent rows of bars, wherein a generation point of the solid fragment is located within a cavity at least partially enclosed by the array of bars.

Payne, Lloyd R. (Los Lunas, NM); Cole, David L. (Albuquerque, NM)

2010-03-30T23:59:59.000Z

198

Biochip scanner device  

DOE Patents (OSTI)

A biochip scanner device used to detect and acquire fluorescence signal data from biological microchips or biochips and method of use are provided. The biochip scanner device includes a laser for emitting a laser beam. A modulator, such as an optical chopper modulates the laser beam. A scanning head receives the modulated laser beam and a scanning mechanics coupled to the scanning head moves the scanning head relative to the biochip. An optical fiber delivers the modulated laser beam to the scanning head. The scanning head collects the fluorescence light from the biochip, launches it into the same optical fiber, which delivers the fluorescence into a photodetector, such as a photodiode. The biochip scanner device is used in a row scanning method to scan selected rows of the biochip with the laser beam size matching the size of the immobilization site.

Perov, Alexander (Troitsk, RU); Belgovskiy, Alexander I. (Mayfield Heights, OH); Mirzabekov, Andrei D. (Darien, IL)

2001-01-01T23:59:59.000Z

199

Electrochromic optical switching device  

DOE Patents (OSTI)

An electrochromic cell is disclosed which comprises an electrochromic layer, a polymerizable organo-sulfur layer which comprises the counter electrode of the structure, and an ionically conductive electronically insulating material which comprises the separator between the electrodes. In a preferred embodiment, both the separator and the organo-sulfur electrode (in both its charged and uncharged states) are transparent either to visible light or to the entire solar spectrum. An electrochromic device is disclosed which comprises such electrodes and separator encased in glass plates on the inner surface of each of which is formed a transparent electrically conductive film in respective electrical contact with the electrodes which facilitates formation of an external electrical connection or contact to the electrodes of the device to permit electrical connection of the device to an external potential source. 3 figs.

Lampert, C.M.; Visco, S.J.

1992-08-25T23:59:59.000Z

200

Electrochromic optical switching device  

DOE Patents (OSTI)

An electrochromic cell is disclosed which comprises an electrochromic layer, a polymerizable organo-sulfur layer which comprises the counter electrode of the structure, and an ionically conductive electronically insulating material which comprises the separator between the electrodes. In a preferred embodiment, both the separator and the organo-sulfur electrode (in both its charged and uncharged states) are transparent either to visible light or to the entire solar spectrum. An electrochromic device is disclosed which comprises such electrodes and separator encased in glass plates on the inner surface of each of which is formed a transparent electrically conductive film in respective electrical contact with the electrodes which facilitates formation of an external electrical connection or contact to the electrodes of the device to permit electrical connection of the device to an external potential source.

Lampert, Carl M. (El Sobrante, CA); Visco, Steven J. (Berkeley, CA)

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Ion manipulation device  

DOE Patents (OSTI)

An ion manipulation method and device is disclosed. The device includes a pair of substantially parallel surfaces. An array of inner electrodes is contained within, and extends substantially along the length of, each parallel surface. The device includes a first outer array of electrodes and a second outer array of electrodes. Each outer array of electrodes is positioned on either side of the inner electrodes, and is contained within and extends substantially along the length of each parallel surface. A DC voltage is applied to the first and second outer array of electrodes. A RF voltage, with a superimposed electric field, is applied to the inner electrodes by applying the DC voltages to each electrode. Ions either move between the parallel surfaces within an ion confinement area or along paths in the direction of the electric field, or can be trapped in the ion confinement area.

Anderson, Gordon A; Smith, Richard D; Ibrahim, Yehia M; Baker, Erin M

2014-09-16T23:59:59.000Z

202

Numerical Study of Convective Heat Transfer in Flat Tube Heat Exchangers Operating in Self-Sustained Oscillatory Flow Regimes  

E-Print Network (OSTI)

Laminar, two-dimensional, constant-property numerical simulations of flat tube heat exchanger devices operating in flow regimes in which self-sustained oscillations occur were performed. The unsteady flow regimes were transition flow regimes...

Fullerton, Tracy

2012-02-14T23:59:59.000Z

203

Precision alignment device  

DOE Patents (OSTI)

Apparatus for providing automatic alignment of beam devices having an associated structure for directing, collimating, focusing, reflecting, or otherwise modifying the main beam. A reference laser is attached to the structure enclosing the main beam producing apparatus and produces a reference beam substantially parallel to the main beam. Detector modules containing optical switching devices and optical detectors are positioned in the path of the reference beam and are effective to produce an electrical output indicative of the alignment of the main beam. This electrical output drives servomotor operated adjustment screws to adjust the position of elements of the structure associated with the main beam to maintain alignment of the main beam. 5 figs.

Jones, N.E.

1988-03-10T23:59:59.000Z

204

Phononic crystal devices  

DOE Patents (OSTI)

Phononic crystals that have the ability to modify and control the thermal black body phonon distribution and the phonon component of heat transport in a solid. In particular, the thermal conductivity and heat capacity can be modified by altering the phonon density of states in a phononic crystal. The present invention is directed to phononic crystal devices and materials such as radio frequency (RF) tags powered from ambient heat, dielectrics with extremely low thermal conductivity, thermoelectric materials with a higher ratio of electrical-to-thermal conductivity, materials with phononically engineered heat capacity, phononic crystal waveguides that enable accelerated cooling, and a variety of low temperature application devices.

El-Kady, Ihab F. (Albuquerque, NM); Olsson, Roy H. (Albuquerque, NM)

2012-01-10T23:59:59.000Z

205

MHK Technologies/Multi Energy Device | Open Energy Information  

Open Energy Info (EERE)

Multi Energy Device.png Multi Energy Device.png Technology Profile Technology Resource Click here Wave Technology Type Click here Oscillating Water Column Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description Vertical cylinder shaped like a double sided hydrofoil The basic working principle consist of using the pressure reduction that occurs when water flow along a curved surface shaped like a hydrofoil to create a new water flow which can drive a water turbine The device comprises a cylinder with curved side panels and with a water turbine placed inside the cylinder Water flowing past the device will result in pressure reduction at the outer surface of the side panels due to hydrodynamic lift and pressure drag The pressure reduction creates a new water flow where the water flows into the cylinder at the underside further through the water turbine and out through the side panels The new panel design enables them to work even if turbulence occur moreover the design enable concentration of the hydrodynamic lift and drag forces resulting in increased pressure difference between the side panel and the water inlet

206

Magnetic Amplifier for Power Flow Control  

SciTech Connect

GENI Project: ORNL is developing an electromagnet-based, amplifier-like device that will allow for complete control over the flow of power within the electric grid. To date, complete control of power flow within the grid has been prohibitively expensive. ORNL’s controller could provide a reliable, cost-effective solution to this problem. The team is combining two types of pre-existing technologies to assist in flow control, culminating in a prototype iron-based magnetic amplifier. Ordinarily, such a device would require expensive superconductive wire, but the magnetic iron core of ORNL’s device could serve as a low-cost alternative that is equally adept at regulating power flow.

None

2012-02-24T23:59:59.000Z

207

Device Oriented Project Controller  

SciTech Connect

This proposal is directed at the issue of developing control systems for very large HEP projects. A de-facto standard in accelerator control is the Experimental Physics and Industrial Control System (EPICS), which has been applied successfully to many physics projects. EPICS is a channel based system that requires that each channel of each device be configured and controlled. In Phase I, the feasibility of a device oriented extension to the distributed channel database was demonstrated by prototyping a device aware version of an EPICS I/O controller that functions with the current version of the channel access communication protocol. Extensions have been made to the grammar to define the database. Only a multi-stage position controller with limit switches was developed in the demonstration, but the grammar should support a full range of functional record types. In phase II, a full set of record types will be developed to support all existing record types, a set of process control functions for closed loop control, and support for experimental beam line control. A tool to configure these records will be developed. A communication protocol will be developed or extensions will be made to Channel Access to support introspection of components of a device. Performance bench marks will be made on both communication protocol and the database. After these records and performance tests are under way, a second of the grammar will be undertaken.

Dalesio, Leo; Kraimer, Martin

2013-11-20T23:59:59.000Z

208

Solar Innovator | Alta Devices  

SciTech Connect

Selected to participate in the Energy Department's SunShot Initiative, Alta Devices produces solar cells that convert sunlight into electricity at world record-breaking levels of efficiency. Through its innovative solar technology Alta is helping bring down the cost of solar. Learn more about the Energy Department's efforts to advance solar technology at energy.gov/solar .

Mattos, Laila; Le, Minh

2012-01-01T23:59:59.000Z

209

Multiple gap photovoltaic device  

DOE Patents (OSTI)

A multiple gap photovoltaic device having a transparent electrical contact adjacent a first cell which in turn is adjacent a second cell on an opaque electrical contact, includes utilizing an amorphous semiconductor as the first cell and a crystalline semiconductor as the second cell.

Dalal, Vikram L. (Newark, DE)

1981-01-01T23:59:59.000Z

210

Time-resolved fuel injector flow characterisation based on 3D laser Doppler vibrometry  

E-Print Network (OSTI)

In order to enable investigations of the fuel flow inside unmodified injectors, we have developed a new experimental approach to measure time-resolved vibration spectra of diesel nozzles using a three dimensional laser vibrometer. The technique we propose is based on the triangulation of the vibrometer and fuel pressure transducer signals, and enables the quantitative characterisation of quasi-cyclic internal flows without requiring modifications to the injector, the working fluid, or limiting the fuel injection pressure. The vibrometer, which uses the Doppler effect to measure the velocity of a vibrating object, was used to scan injector nozzle tips during the injection event. The data were processed using a discrete Fourier transform to provide time-resolved spectra for valve-closed-orifice, minisac and microsac nozzle geometries, and injection pressures ranging from 60 to 160MPa, hence offering unprecedented insight into cyclic cavitation and internal mechanical dynamic processes. A peak was consistently f...

Crua, Cyril

2015-01-01T23:59:59.000Z

211

Flow chamber  

DOE Patents (OSTI)

A flow chamber having a vacuum chamber and a specimen chamber. The specimen chamber may have an opening through which a fluid may be introduced and an opening through which the fluid may exit. The vacuum chamber may have an opening through which contents of the vacuum chamber may be evacuated. A portion of the flow chamber may be flexible, and a vacuum may be used to hold the components of the flow chamber together.

Morozov, Victor (Manassas, VA)

2011-01-18T23:59:59.000Z

212

Gunshot triangulation device testing  

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

Gunshot triangulation device testing Gunshot triangulation device testing Report to the Fermilab Community Advisory Board, Oct. 28, 2010 The Fermilab security director outlined for the board last month a recurring problem of people shooting guns near the edges of the laboratory and bullets coming onto the site. Fermilab is installing a system to triangulate the gunshots to improve police response time. This will require a set-up calibration of two dozen gunshots during a total of 6 minutes at the laboratory site. The board was asked for recommendations about how and whom to inform of the test firing. In response to the board discussion, Fermilab plans to take the following actions: ï‚· The test firing will occur during the mid-day of a week day to minimize the number of residents

213

Light modulating device  

DOE Patents (OSTI)

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

Rauh, R. David (Newton, MA); Goldner, Ronald B. (Lexington, MA)

1989-01-01T23:59:59.000Z

214

Light modulating device  

DOE Patents (OSTI)

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

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

1989-12-26T23:59:59.000Z

215

Support and maneuvering device  

DOE Patents (OSTI)

A support and maneuvering device includes an elongated flexible inflatable enclosure having a fixed end and a movable end. The movable end is collapsible toward the fixed end to a contracted position when the enclosure is in a noninflated condition. Upon inflation, the movable end is movable away from the fixed end to an extended position. The movable end includes means for mounting an article such as a solar reflector thereon. The device also includes a plurality of position controlling means disposed about the movable end to effect adjusting movement of portions thereof by predetermined amounts and for controlling an angle at which the article disposed at the movable end is oriented. The plurality of position controlling means limits a suitable number degrees of freedom of the movable end for transmitting a steering motion thereto and for controlling the position thereof. 9 figs.

Wood, R.L.

1987-03-23T23:59:59.000Z

216

Wire brush fastening device  

DOE Patents (OSTI)

A fastening device is provided which is a variation on the conventional nut and bolt. The bolt has a longitudinal axis and threading helically affixed thereon along the longitudinal axis. A nut having a bore extending therethrough is provided. The bore of the nut has a greater diameter than the diameter of the bolt so the bolt can extend through the bore. An array of wire bristles are affixed within the bore so as to form a brush. The wire bristles extend inwardly from the bore and are constructed and arranged of the correct size, length and stiffness to guide the bolt within the bore and to restrain the bolt within the bore as required. A variety of applications of the wire brush nut are disclosed, including a bolt capture device and a test rig apparatus. 13 figs.

Meigs, R.A.

1995-09-19T23:59:59.000Z

217

Support and maneuvering device  

DOE Patents (OSTI)

A support and maneuvering device includes an elongated flexible inflatable enclosure having a fixed end and a movable end. The movable end is collapsible toward the fixed end to a contracted position when the enclosure is in a noninflated condition. Upon inflation, the movable end is movable away from the fixed end to an extended position. The movable end includes means for mounting an article such as a solar reflector thereon. The device also includes a plurality of position controlling means disposed about the movable end to effect adjusting movement of portions thereof by predetermined amounts and for controlling an angle at which the article disposed at the movable end is oriented. The plurality of position controlling means limits a suitable number degrees of freedom of the movable end for transmitting a steering motion thereto and for controlling the position thereof.

Wood, Richard L. (Arvada, CO)

1988-01-01T23:59:59.000Z

218

Residual gas analysis device  

DOE Patents (OSTI)

A system is provided for testing the hermeticity of a package, such as a microelectromechanical systems package containing a sealed gas volume, with a sampling device that has the capability to isolate the package and breach the gas seal connected to a pulse valve that can controllably transmit small volumes down to 2 nanoliters to a gas chamber for analysis using gas chromatography/mass spectroscopy diagnostics.

Thornberg, Steven M. (Peralta, NM)

2012-07-31T23:59:59.000Z

219

Energy Management on Handheld Devices  

Science Journals Connector (OSTI)

Handheld devices are becoming ubiquitous and as their capabilities increase, they are starting to displace laptop computers - much as laptop computers have displaced desktop computers in many roles. Handheld devices are evolving from today's PDAs, organizers, ...

Marc A Viredaz; Lawrence S Brakmo; William R Hamburgen

2003-10-01T23:59:59.000Z

220

Manufacturing of lab-on-a-chip devices : characterizing seals for on-board reagent delivery  

E-Print Network (OSTI)

The reagent delivery mechanism in a point-of-care, HIV diagnostic, microfluidic device is studied. Reagents held in an aluminum pack are released on the opening of a fluidic seal. Fluidic seals, controlling the flow of ...

Inamdar, Tejas Satish

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Design of a microfluidic device for the analysis of biofilm behavior in a microbial fuel cell  

E-Print Network (OSTI)

This thesis presents design, manufacturing, testing, and modeling of a laminar-flow microbial fuel cell. Novel means were developed to use graphite and other bulk-scale materials in a microscale device without loosing any ...

Jones, A-Andrew D., III (Akhenaton-Andrew Dhafir)

2014-01-01T23:59:59.000Z

222

A microfluidic device for high throughput bacterial biofilm studies Jeongyun Kim,a  

E-Print Network (OSTI)

A microfluidic device for high throughput bacterial biofilm studies Jeongyun Kim,a Manjunath Hegde of biofilm community formation. Here, we describe the development of a PDMS-based two-layer microfluidic flow

Wood, Thomas K.

223

Design of regulated velocity flow assurance device for petroleum industry  

E-Print Network (OSTI)

in the pipeline. The pig data revealed any type of anamolies in the pipeline and this helped prevent major leaks and also helped in scheduling a plan for the repair or replacement of pipelines. This kind of pig was called an Inspection pig or a Smart pig... in the pipeline. The pig data revealed any type of anamolies in the pipeline and this helped prevent major leaks and also helped in scheduling a plan for the repair or replacement of pipelines. This kind of pig was called an Inspection pig or a Smart pig...

Yardi, Chaitanya Narendra

2005-02-17T23:59:59.000Z

224

Nanotube resonator devices  

DOE Patents (OSTI)

A fully-functional radio receiver fabricated from a single nanotube is being disclosed. Simultaneously, a single nanotube can perform the functions of all major components of a radio: antenna, tunable band-pass filter, amplifier, and demodulator. A DC voltage source, as supplied by a battery, can power the radio. Using carrier waves in the commercially relevant 40-400 MHz range and both frequency and amplitude modulation techniques, successful music and voice reception has been demonstrated. Also disclosed are a radio transmitter and a mass sensor using a nanotube resonator device.

Jensen, Kenneth J; Zettl, Alexander K; Weldon, Jeffrey A

2014-05-06T23:59:59.000Z

225

EXAMINING THE SPECTROSCOPY OF WATER VAPOR IN THE ATMOSPHERE  

E-Print Network (OSTI)

Compare to relative humidity probe Describes VCSEL accuracy #12;FLOW DILUTION SYSTEM Critical Orifice

Petta, Jason

226

Radiography Device | Department of Energy  

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

Radiography Device Radiography Device Radiography Device This scenario provides the planning instructions, guidance, and evaluation forms necessary to conduct an exercise involving a highway shipment of a radiography device (Class 7 - Radioactive). This exercise manual is one in a series of five scenarios developed by the Department of Energy Transportation Emergency Preparedness Program. Responding agencies may include several or more of the following: local municipal and county fire, police, sheriff, and Emergency Medical Services (EMS) personnel; state, local, and federal emergency response teams; emergency response contractors; and other emergency response resources that could potentially be provided by the carrier and the originating facility (shipper). Radiography Device.docx

227

Stretchable and foldable electronic devices  

DOE Patents (OSTI)

Disclosed herein are stretchable, foldable and optionally printable, processes for making devices and devices such as semiconductors, electronic circuits and components thereof that are capable of providing good performance when stretched, compressed, flexed or otherwise deformed. Strain isolation layers provide good strain isolation to functional device layers. Multilayer devices are constructed to position a neutral mechanical surface coincident or proximate to a functional layer having a material that is susceptible to strain-induced failure. Neutral mechanical surfaces are positioned by one or more layers having a property that is spatially inhomogeneous, such as by patterning any of the layers of the multilayer device.

Rogers, John A; Huang, Yonggang; Ko, Heung Cho; Stoykovich, Mark; Choi, Won Mook; Song, Jizhou; Ahn, Jong Hyun; Kim, Dae Hyeong

2014-12-09T23:59:59.000Z

228

Stretchable and foldable electronic devices  

DOE Patents (OSTI)

Disclosed herein are stretchable, foldable and optionally printable, processes for making devices and devices such as semiconductors, electronic circuits and components thereof that are capable of providing good performance when stretched, compressed, flexed or otherwise deformed. Strain isolation layers provide good strain isolation to functional device layers. Multilayer devices are constructed to position a neutral mechanical surface coincident or proximate to a functional layer having a material that is susceptible to strain-induced failure. Neutral mechanical surfaces are positioned by one or more layers having a property that is spatially inhomogeneous, such as by patterning any of the layers of the multilayer device.

2013-10-08T23:59:59.000Z

229

Slug flow  

E-Print Network (OSTI)

Introduction: When two phases flow concurrently in a pipe, they can distribute themselves in a number of different configurations. The gas could be uniformly dispersed throughout the liquid in the form of small bubbles. ...

Griffith, P.

1959-01-01T23:59:59.000Z

230

Inertial separator as a sediment control device  

SciTech Connect

The focus of this research was to address the feasibility of employing an inertial separator as a sediment control device on surface mined lands. A mathematical model has been developed to predict the sediment capture efficiency of this device on a particle size basis, and under alternative design construction conditions. The predicted performance of the inertial separator has been analyzed for a 10 year-24 hour storm generated from a contour mining operation in the Appalachian coal region. The inertial separator is designed to replace a sediment basin as the primary sediment control device. It is designed to be transported on one flat bed truck and could be modularized to facilitate a rapid installation. It has the advantages of relocation and reuse from one site to another, no moving parts, no energy requirements, simple construction, etc. The inertial separator is designed to reduce the problems common to sedimentation processes. The system uses the inertia of settling particles in accelerating flow to enhance separation, reduce short circuiting, and increase particle detention time (with a resultant increase in flocculation potential). A detailed design example is presented to indicate the expected sediment trap efficiency of the inertial separator for a sediment generated from a typical mining operation. Sediment and hydrologic inputs were determined using the SEDIMOT II model. Also, preliminary construction specifications are detailed.

Sterling, H.J.; Warner, R.C.

1984-12-01T23:59:59.000Z

231

Convective heat flow probe  

DOE Patents (OSTI)

A convective heat flow probe device is provided which measures heat flow and fluid flow magnitude in the formation surrounding a borehole. The probe comprises an elongate housing adapted to be lowered down into the borehole; a plurality of heaters extending along the probe for heating the formation surrounding the borehole; a plurality of temperature sensors arranged around the periphery of the probe for measuring the temperature of the surrounding formation after heating thereof by the heater elements. The temperature sensors and heater elements are mounted in a plurality of separate heater pads which are supported by the housing and which are adapted to be radially expanded into firm engagement with the walls of the borehole. The heat supplied by the heater elements and the temperatures measured by the temperature sensors are monitored and used in providing the desired measurements. The outer peripheral surfaces of the heater pads are configured as segments of a cylinder and form a full cylinder when taken together. A plurality of temperature sensors are located on each pad so as to extend along the length and across the width thereof, with a heating element being located in each pad beneath the temperature sensors. An expansion mechanism driven by a clamping motor provides expansion and retraction of the heater pads and expandable packet-type seals are provided along the probe above and below the heater pads.

Dunn, J.C.; Hardee, H.C.; Striker, R.P.

1984-01-09T23:59:59.000Z

232

Free Flow Power Partners to Improve Hydrokinetic Turbine Performance...  

Office of Environmental Management (EM)

as the device performed as expected, with no discernible harm to river-dwelling fish. Free Flow has also completed preliminary designs of utility-scale installations at a...

233

A MEMS BODY FLUID FLOW SENSOR Ellis Meng1  

E-Print Network (OSTI)

for its stability, accuracy, and high temperature coefficient of resistivity (TCR). Additional packaging the device using compressed air. The flow rate is adjusted by a metering valve and calibrated using

Meng, Ellis

234

Fuel vapor control device  

SciTech Connect

A fuel vapor control device is described having a valve opening and closing a passage connecting a carburetor and a charcoal canister according to a predetermined temperature. A first coil spring formed by a ''shape memory effect'' alloy is provided to urge the valve to open the passage when the temperature is high. A second coil spring urges the valve to close the passage. A solenoid is provided to urge an armature against the valve to close the passage against the force of the first coil spring when the engine is running. The solenoid heats the first coil spring to generate a spring force therein when the engine is running. When the engine is turned off, the solenoid is deactivated, and the force of the first spring overcomes the force of the second spring to open the passage until such time as the temperature of the first spring drops below the predetermined temperature.

Ota, I.; Nishimura, Y.; Nishio, S.; Yogo, K.

1987-10-20T23:59:59.000Z

235

Ceramics for fusion devices  

SciTech Connect

Ceramics are required for a number of applications in fusion devices, among the most critical of which are magnetic coil insulators, windows for RF heating systems, and structural uses. Radiation effects dominate consideration of candidate materials, although good pre-irradiation properties are a requisite. Materials and components can be optimized by careful control of chemical and microstructural content, and application of brittle material design and testing techniques. Future directions for research and development should include further extension of the data base in the areas of electrical, structural, and thermal properties; establishment of a fission neutron/fusion neutron correlation including transmutation gas effects; and development of new materials tailored to meet the specific needs of fusion reactors.

Clinard, F.W. Jr.

1984-01-01T23:59:59.000Z

236

False color viewing device  

DOE Patents (OSTI)

This invention consists of a viewing device for observing objects in near-infrared false-color comprising a pair of goggles with one or more filters in the apertures, and pads that engage the face for blocking stray light from the sides so that all light reaching, the user`s eyes come through the filters. The filters attenuate most visible light and pass near-infrared (having wavelengths longer than approximately 700 nm) and a small amount of blue-green and blue-violet (having wavelengths in the 500 to 520 nm and shorter than 435 nm, respectively). The goggles are useful for looking at vegetation to identify different species and for determining the health of the vegetation, and to detect some forms of camouflage.

Kronberg, J.W.

1991-05-08T23:59:59.000Z

237

Electrical safety device  

DOE Patents (OSTI)

An electrical safety device for use in power tools that is designed to automatically discontinue operation of the power tool upon physical contact of the tool with a concealed conductive material. A step down transformer is used to supply the operating power for a disconnect relay and a reset relay. When physical contact is made between the power tool and the conductive material, an electrical circuit through the disconnect relay is completed and the operation of the power tool is automatically interrupted. Once the contact between the tool and conductive material is broken, the power tool can be quickly and easily reactivated by a reset push button activating the reset relay. A remote reset is provided for convenience and efficiency of operation.

White, David B. (Greenock, PA)

1991-01-01T23:59:59.000Z

238

Disposable Electrochemical Immunosensor Diagnosis Device Based...  

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

Disposable Electrochemical Immunosensor Diagnosis Device Based on Nanoparticle Probe and Immunochromatographic Strip. Disposable Electrochemical Immunosensor Diagnosis Device Based...

239

Alta Devices | Open Energy Information  

Open Energy Info (EERE)

Devices Devices Jump to: navigation, search Name Alta Devices Place Santa Clara, California Zip 95054 Product California-based stealth mode company developing low-cost compound-PV-semiconductors. Website https://www.altadevices.com/ References Alta Devices[1] Information About Partnership with NREL Partnership with NREL Yes Partnership Type Incubator Partnering Center within NREL National Center for Photovoltaics Partnership Year 2010 Link to project description http://www.nrel.gov/news/press/2010/802.html LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Alta Devices is a company located in Santa Clara, California . References ↑ "Alta Devices" Retrieved from

240

CFD analysis of laminar oscillating flows  

SciTech Connect

This paper describes a numerical simulations of oscillating flow in a constricted duct and compares the results with experimental and theoretical data. The numerical simulations were performed using the computational fluid dynamics (CFD) code CFX4.2. The numerical model simulates an experimental oscillating flow facility that was designed to test the properties and characteristics of oscillating flow in tapered ducts, also known as jet pumps. Jet pumps are useful devices in thermoacoustic machinery because they produce a secondary pressure that can counteract an unwanted effect called streaming, and significantly enhance engine efficiency. The simulations revealed that CFX could accurately model velocity, shear stress and pressure variations in laminar oscillating flow. The numerical results were compared to experimental data and theoretical predictions with varying success. The least accurate numerical results were obtained when laminar flow approached transition to turbulent flow.

Booten, C. W. Charles W.); Konecni, S. (Snezana); Smith, B. L. (Barton L.); Martin, R. A. (Richard A.)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Microbiopsy/precision cutting devices  

DOE Patents (OSTI)

Devices are disclosed for performing tissue biopsy on a small scale (microbiopsy). By reducing the size of the biopsy tool and removing only a small amount of tissue or other material in a minimally invasive manner, the risks, costs, injury and patient discomfort associated with traditional biopsy procedures can be reduced. By using micromachining and precision machining capabilities, it is possible to fabricate small biopsy/cutting devices from silicon. These devices can be used in one of four ways (1) intravascularly, (2) extravascularly, (3) by vessel puncture, and (4) externally. Additionally, the devices may be used in precision surgical cutting. 6 figs.

Krulevitch, P.A.; Lee, A.P.; Northrup, M.A.; Benett, W.J.

1999-07-27T23:59:59.000Z

242

Microbiopsy/precision cutting devices  

DOE Patents (OSTI)

Devices for performing tissue biopsy on a small scale (microbiopsy). By reducing the size of the biopsy tool and removing only a small amount of tissue or other material in a minimally invasive manner, the risks, costs, injury and patient discomfort associated with traditional biopsy procedures can be reduced. By using micromachining and precision machining capabilities, it is possible to fabricate small biopsy/cutting devices from silicon. These devices can be used in one of four ways 1) intravascularly, 2) extravascularly, 3) by vessel puncture, and 4) externally. Additionally, the devices may be used in precision surgical cutting.

Krulevitch, Peter A. (Pleasanton, CA); Lee, Abraham P. (Walnut Creek, CA); Northrup, M. Allen (Berkeley, CA); Benett, William J. (Livermore, CA)

1999-01-01T23:59:59.000Z

243

Automated control of microfluidics devices.  

E-Print Network (OSTI)

??In order for microfluidics devices to be marketable, they must be inexpensive and easy to use. Two projects were pursued in this study for this… (more)

Gerstel, Ian.

2010-01-01T23:59:59.000Z

244

Temperature differential detection device  

DOE Patents (OSTI)

A temperature differential detection device for detecting the temperature differential between predetermined portions of a container wall is disclosed as comprising a Wheatstone bridge circuit for detecting resistance imbalance with a first circuit branch having a first elongated wire element mounted in thermal contact with a predetermined portion of the container wall, a second circuit branch having a second elongated wire element mounted in thermal contact with a second predetermined portion of a container wall with the wire elements having a predetermined temperature-resistant coefficient, an indicator interconnected between the first and second branches remote from the container wall for detecting and indicating resistance imbalance between the first and second wire elements, and connector leads for electrically connecting the wire elements to the remote indicator in order to maintain the respective resistance value relationship between the first and second wire elements. The indicator is calibrated to indicate the detected resistance imbalance in terms of a temperature differential between the first and second wall portions.

Girling, Peter M. (Allentown, PA)

1986-01-01T23:59:59.000Z

245

Axially Tapered And Bilayer Microchannels For Evaporative Cooling Devices  

DOE Patents (OSTI)

The invention consists of an evaporative cooling device comprising one or more microchannels whose cross section is axially reduced to control the maximum capillary pressure differential between liquid and vapor phases. In one embodiment, the evaporation channels have a rectangular cross section that is reduced in width along a flow path. In another embodiment, channels of fixed width are patterned with an array of microfabricated post-like features such that the feature size and spacing are gradually reduced along the flow path. Other embodiments incorporate bilayer channels consisting of an upper cover plate having a pattern of slots or holes of axially decreasing size and a lower fluid flow layer having channel widths substantially greater than the characteristic microscale dimensions of the patterned cover plate. The small dimensions of the cover plate holes afford large capillary pressure differentials while the larger dimensions of the lower region reduce viscous flow resistance.

Nilson, Robert (Cardiff, CA); Griffiths, Stewart (Livermore, CA)

2005-10-04T23:59:59.000Z

246

CFD Simulation of Brine-Seawater Mixing in a Rotary Energy Recovery Device  

Science Journals Connector (OSTI)

CFD Simulation of Brine-Seawater Mixing in a Rotary Energy Recovery Device ... The effects of operational conditions on the mixing behavior of rotary energy recovery device have been systematically investigated through the combined methods of computational fluid dynamics and validating experiments in this paper. ... The obtained formulas between mixing and dimensionless flow length provide a simple way to calculate and predict the mixing of device, which will be beneficial to design and operate the rotary energy recovery device in a lower mixing level. ...

Enle Xu; Yue Wang; Liming Wu; Shichang Xu; Yuxin Wang; Shichang Wang

2014-11-05T23:59:59.000Z

247

Mobile Device Policy & Program Considerations  

E-Print Network (OSTI)

Page 1 Mobile Device Policy & Program Considerations To BYOD or not to BYOD (bring to manage the use of mobile devices within their corporate resources. Every business will naturally have different mobility requirements, and developing a policy in the first place, let alone an appropriate policy

Fisher, Kathleen

248

NETL: Pressure Swing Absorption Device  

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

Pressure Swing Absorption Device and Process for Separating CO2 from Shifted Syngas and its Capture for Subsequent Storage Pressure Swing Absorption Device and Process for Separating CO2 from Shifted Syngas and its Capture for Subsequent Storage Project No.: DE-FE0001323 New Jersey Institute of Technology is developing an advanced pressure swing absorption-based (PSAB) device via laboratory-based experiments. The device will be used to accomplish a cyclic process to process low temperature post-shift-reactor synthesis gas resulting from the gasification process into purified hydrogen at high pressure for use by the combustion turbine of an integrated gasification combined cycle (IGCC) plant. The overall goal of the proposed work is to develop an advanced PSAB device and cyclic process for use in a coal-fired IGCC plant to produce purified hydrogen at high pressure and a highly purified CO2 stream suitable for use or sequestration.

249

Notes on Conformal Invisibility Devices  

E-Print Network (OSTI)

As a consequence of the wave nature of light, invisibility devices based on isotropic media cannot be perfect. The principal distortions of invisibility are due to reflections and time delays. Reflections can be made exponentially small for devices that are large in comparison with the wavelength of light. Time delays are unavoidable and will result in wave-front dislocations. This paper considers invisibility devices based on optical conformal mapping. The paper shows that the time delays do not depend on the directions and impact parameters of incident light rays, although the refractive-index profile of any conformal invisibility device is necessarily asymmetric. The distortions of images are thus uniform, which reduces the risk of detection. The paper also shows how the ideas of invisibility devices are connected to the transmutation of force, the stereographic projection and Escheresque tilings of the plane.

Ulf Leonhardt

2006-05-25T23:59:59.000Z

250

Ionization based multi-directional flow sensor  

DOE Patents (OSTI)

A method, system, and apparatus for conducting real-time monitoring of flow (airflow for example) in a system (a hybrid power generation system for example) is disclosed. The method, system and apparatus measure at least flow direction and velocity with minimal pressure drop and fast response. The apparatus comprises an ion source and a multi-directional collection device proximate the ion source. The ion source is configured to generate charged species (electrons and ions for example). The multi-directional collection source is configured to determine the direction and velocity of the flow in real-time.

Chorpening, Benjamin T. (Morgantown, WV); Casleton, Kent H. (Morgantown, WV)

2009-04-28T23:59:59.000Z

251

Flow distribution analysis on the cooling tube network of ITER thermal shield  

SciTech Connect

Thermal shield (TS) is to be installed between the vacuum vessel or the cryostat and the magnets in ITER tokamak to reduce the thermal radiation load to the magnets operating at 4.2K. The TS is cooled by pressurized helium gas at the inlet temperature of 80K. The cooling tube is welded on the TS panel surface and the composed flow network of the TS cooling tubes is complex. The flow rate in each panel should be matched to the thermal design value for effective radiation shielding. This paper presents one dimensional analysis on the flow distribution of cooling tube network for the ITER TS. The hydraulic cooling tube network is modeled by an electrical analogy. Only the cooling tube on the TS surface and its connecting pipe from the manifold are considered in the analysis model. Considering the frictional factor and the local loss in the cooling tube, the hydraulic resistance is expressed as a linear function with respect to mass flow rate. Sub-circuits in the TS are analyzed separately because each circuit is controlled by its own control valve independently. It is found that flow rates in some panels are insufficient compared with the design values. In order to improve the flow distribution, two kinds of design modifications are proposed. The first one is to connect the tubes of the adjacent panels. This will increase the resistance of the tube on the panel where the flow rate is excessive. The other design suggestion is that an orifice is installed at the exit of tube routing where the flow rate is to be reduced. The analysis for the design suggestions shows that the flow mal-distribution is improved significantly.

Nam, Kwanwoo; Chung, Wooho; Noh, Chang Hyun; Kang, Dong Kwon; Kang, Kyoung-O; Ahn, Hee Jae; Lee, Hyeon Gon [ITER Korea, National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of)

2014-01-29T23:59:59.000Z

252

RAPID FREE FLOW ISOELECTRIC FOCUSING VIA NOVEL ELECTRODE STRUCTURES  

E-Print Network (OSTI)

RAPID FREE FLOW ISOELECTRIC FOCUSING VIA NOVEL ELECTRODE STRUCTURES Jacob Albrecht, Suzanne Gaudet for micro free flow electrophoresis devices. Packed polymer beads or agar were used to isolate the sample from the electrochemical reactions at the metal electrode surface. These materials allow for applied

253

Environmental pollution control devices based on novel forms of carbon  

SciTech Connect

The purpose of this research was to assess the feasibility of using carbon devices for the electrochemical removal of heavy metal contaminants from aqueous streams. The ability of several carbonaceous materials to remove metal ions was evaluated using a porous flow-through electrochemical cell. The resulting effluent was monitored downstream using Anodic Stripping Voltammetry (ASV) to determine the decrease in analyte concentration and hence the electrode efficiency.

Brennsteiner, A.; Zondlo, J.W.; Stiller, A.H. [West Virginia Univ., Morgantown, WV (United States)

1996-12-31T23:59:59.000Z

254

SFTEL: Flow Cell | EMSL  

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

Flow Cell EMSL's Subsurface Flow and Transport Experimental Laboratory offers several meter-scale flow cells and columns for research in saturated and unsaturated porous media....

255

Split ring containment attachment device  

DOE Patents (OSTI)

A containment attachment device 10 for operatively connecting a glovebag 200 to plastic sheeting 100 covering hazardous material. The device 10 includes an inner split ring member 20 connected on one end 22 to a middle ring member 30 wherein the free end 21 of the split ring member 20 is inserted through a slit 101 in the plastic sheeting 100 to captively engage a generally circular portion of the plastic sheeting 100. A collar potion 41 having an outer ring portion 42 is provided with fastening means 51 for securing the device 10 together wherein the glovebag 200 is operatively connected to the collar portion 41.

Sammel, Alfred G. (Pittsburgh, PA)

1996-01-01T23:59:59.000Z

256

Novel GaAs Devices  

Science Journals Connector (OSTI)

As the dimensions of GaAs devices shrink, the effective electron velocity should increase, leading to a shorter transit time and to a ballistic or near-ballistic mode of operation (see Chapter 2). At the same ...

Michael Shur

1987-01-01T23:59:59.000Z

257

Optical and optoelectronic fiber devices  

E-Print Network (OSTI)

The ability to integrate materials with disparate electrical, thermal, and optical properties into a single fiber structure enabled the realization of fiber devices with diverse and complex functionalities. Amongst those, ...

Shapira, Ofer, Ph. D. Massachusetts Institute of Technology

2007-01-01T23:59:59.000Z

258

Biomedical devices from ultraviolet LEDs  

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

Biomedical devices from ultraviolet LEDs Biomedical devices from ultraviolet LEDs Light-emitting nanocrystal diodes go ultraviolet Biomedical devices with active components could be made from nanostructured systems. February 24, 2012 Researcher working with nanocrystals A researcher at LANL works with nanocrystals. Get Expertise Researcher Sergio Brovelli Physical Chem & Applied Spectroscopy Email Research Team Leader Alberto Paleari University of Milano-Bicocca in Italy Such devices could, for example, selectively activate light-sensitive drugs for better medical treatment or probe for the presence of fluorescent markers in medical diagnostics. LEDs produce light in the ultraviolet range A process for creating glass-based, inorganic light-emitting diodes (LEDs) that produce light in the ultraviolet range has been developed by a

259

Towards Decentralized, Energy- and Privacy-Aware Device-to-Device Content Delivery  

Science Journals Connector (OSTI)

Device-to-Device (D2D) content delivery is a new approach to directly exchange content between mobile devices, which allows to offload ... operator to discover nearby devices and initiate a content transfer, in d...

Leonhard Nobach…

2014-01-01T23:59:59.000Z

260

Wireless device monitoring methods, wireless device monitoring systems, and articles of manufacture  

DOE Patents (OSTI)

Wireless device monitoring methods, wireless device monitoring systems, and articles of manufacture are described. According to one embodiment, a wireless device monitoring method includes accessing device configuration information of a wireless device present at a secure area, wherein the device configuration information comprises information regarding a configuration of the wireless device, accessing stored information corresponding to the wireless device, wherein the stored information comprises information regarding the configuration of the wireless device, comparing the device configuration information with the stored information, and indicating the wireless device as one of authorized and unauthorized for presence at the secure area using the comparing.

McCown, Steven H. (Rigby, ID); Derr, Kurt W. (Idaho Falls, ID); Rohde, Kenneth W. (Idaho Falls, ID)

2012-05-08T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

"Develop enabling optoelectronic devices for broadband  

E-Print Network (OSTI)

"Develop enabling optoelectronic devices for broadband communications and photonic systems Group Our group focuses on optoelectronic devices and photonic integrated circuits to photodiodes with the highest linearity and output power to date. High-Speed Optoelectronic Devices Driven

Acton, Scott

262

MDCF Tutorial Device Interface and App Development  

E-Print Network (OSTI)

-generated Device Interface (ICE Device Model) Vision: IDE for Driver Development & Validation Vision: IntegratedMDCF Tutorial Device Interface and App Development Acknowledgements: Funding provided by US National Science Foundation awards 0734204, 0930647 Clinical documentation and hardware provided by CIMIT

Huth, Michael

263

An Automated Raman Device for Gout Diagnosis  

Science Journals Connector (OSTI)

This study reports an automated Raman device to identify crystals in synovial aspirates from patients with gout symptoms. Combined with sample preparation, the device could diagnose...

Li, Bolan

264

Functionalized Graphene Nanoroads for Quantum Well Device. |...  

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

Nanoroads for Quantum Well Device. Functionalized Graphene Nanoroads for Quantum Well Device. Abstract: Using density functional theory, a series of calculations of structural and...

265

Energy Conversion Devices | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Name: Energy Conversion Devices Place: Rochester Hills, MI Website: http:www.energyconversiondev References: Energy Conversion Devices1...

266

Power Device Packaging | Department of Energy  

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

Power Device Packaging Power Device Packaging 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

267

Power Device Packaging | Department of Energy  

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

Power Device Packaging Power Device Packaging 2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington...

268

DISSERTATION DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS  

E-Print Network (OSTI)

DISSERTATION DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS Submitted by Russell M Reserved #12;ABSTRACT DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS Thin-film photovoltaics

Sites, James R.

269

Triaxial thermopile array geo-heat-flow sensor  

DOE Patents (OSTI)

A triaxial thermopile array geothermal heat flow sensor is designed to measure heat flow in three dimensions in a reconstituted or unperturbed subsurface regime. Heat flow can be measured in conductive or permeable convective media. The sensor may be encased in protective pvc tubing and includes a plurality of thermistors and an array of heat flow transducers produce voltage proportional to heat flux along the subsurface regime and permit direct measurement of heat flow in the subsurface regime. The presence of the thermistor array permits a comparison to be made between the heat flow estimates obtained from the transducers and heat flow calculated using temperature differences and Fourier's Law. The device is extremely sensitive with an accuracy of less than 0.1 Heat Flow Units (HFU) and may be used for long term readings. 6 figs.

Carrigan, C.R.; Hardee, H.C.; Reynolds, G.D.; Steinfort, T.D.

1990-01-01T23:59:59.000Z

270

Triaxial thermopile array geo-heat-flow sensor  

DOE Patents (OSTI)

A triaxial thermopile array geothermal heat flow sensor is designed to measure heat flow in three dimensions in a reconstituted or unperturbed subsurface regime. Heat flow can be measured in conductive or permeable convective media. The sensor may be encased in protective pvc tubing and includes a plurality of thermistors and an array of heat flow transducers arranged in a vertical string. The transducers produce voltage proportional to heat flux along the subsurface regime and permit direct measurement of heat flow in the subsurface regime. The presence of the thermistor array permits a comparison to be made between the heat flow estimates obtained from the transducers and heat flow calculated using temperature differences and Fourier's Law. The device is extremely sensitive with an accuracy of less than 0.1 Heat Flow Units (HFU) and may be used for long term readings.

Carrigan, Charles R. (Tracy, CA); Hardee, Harry C. (Albuquerque, NM); Reynolds, Gerald D. (Tijeras, NM); Steinfort, Terry D. (Tijeras, NM)

1992-01-01T23:59:59.000Z

271

Radiation-tolerant imaging device  

DOE Patents (OSTI)

A barrier at a uniform depth for an entire wafer is used to produce imaging devices less susceptible to noise pulses produced by the passage of ionizing radiation. The barrier prevents charge created in the bulk silicon of a CCD detector or a semiconductor logic or memory device from entering the collection volume of each pixel in the imaging device. The charge barrier is a physical barrier, a potential barrier, or a combination of both. The physical barrier is formed by an SiO{sub 2} insulator. The potential barrier is formed by increasing the concentration of majority carriers (holes) to combine with the electron`s generated by the ionizing radiation. A manufacturer of CCD imaging devices can produce radiation-tolerant devices by merely changing the wafer type fed into his process stream from a standard wafer to one possessing a barrier beneath its surface, thus introducing a very small added cost to his production cost. An effective barrier type is an SiO{sub 2} layer. 7 figs.

Colella, N.J.; Kimbrough, J.R.

1996-11-19T23:59:59.000Z

272

Microelectroporation device for genomic screening  

DOE Patents (OSTI)

We have developed an microelectroporation device that combines microarrays of oligonucleotides, microfluidic channels, and electroporation for cell transfection and high-throughput screening applications (e.g. RNA interference screens). Microarrays allow the deposition of thousands of different oligonucleotides in microscopic spots. Microfluidic channels and microwells enable efficient loading of cells into the device and prevent cross-contamination between different oligonucleotides spots. Electroporation allows optimal transfection of nucleic acids into cells (especially hard-to-transfect cells such as primary cells) by minimizing cell death while maximizing transfection efficiency. This invention has the advantage of a higher throughput and lower cost, while preventing cross-contamination compared to conventional screening technologies. Moreover, this device does not require bulky robotic liquid handling equipment and is inherently safer given that it is a closed system.

Perroud, Thomas D.; Renzi, Ronald F.; Negrete, Oscar; Claudnic, Mark R.

2014-09-09T23:59:59.000Z

273

Beta ray flux measuring device  

DOE Patents (OSTI)

A beta ray flux measuring device in an activated member in-core instrumentation system for pressurized water reactors. The device includes collector rings positioned about an axis in the reactor's pressure boundary. Activated members such as hydroballs are positioned within respective ones of the collector rings. A response characteristic such as the current from or charge on a collector ring indicates the beta ray flux from the corresponding hydroball and is therefore a measure of the relative nuclear power level in the region of the reactor core corresponding to the specific exposed hydroball within the collector ring.

Impink, Jr., Albert J. (Murrysville, PA); Goldstein, Norman P. (Murrysville, PA)

1990-01-01T23:59:59.000Z

274

Metamaterials for terahertz polarimetric devices  

SciTech Connect

We present experimental and numerical investigations of planar terahertz metamaterial structures designed to interact with the state of polarization. The dependence of metamaterial resonances on polarization results in unique amplitude and phase characteristics of the terahertz transmission, providing the basis for polarimetric terahertz devices. We highlight some potential applications for polarimetric devices and present simulations of a terahertz quarter-wave plate and a polarizing terahertz beam splitter. Although this work was performed at terahertz frequencies, it may find applications in other frequency ranges as well.

O'hara, John F [Los Alamos National Laboratory; Taylor, Antoinette J [Los Alamos National Laboratory; Smirnova, Evgenya [Los Alamos National Laboratory; Azad, Abul [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

275

Implantable biomedical devices on bioresorbable substrates  

DOE Patents (OSTI)

Provided herein are implantable biomedical devices, methods of administering implantable biomedical devices, methods of making implantable biomedical devices, and methods of using implantable biomedical devices to actuate a target tissue or sense a parameter associated with the target tissue in a biological environment. Each implantable biomedical device comprises a bioresorbable substrate, an electronic device having a plurality of inorganic semiconductor components supported by the bioresorbable substrate, and a barrier layer encapsulating at least a portion of the inorganic semiconductor components. Upon contact with a biological environment the bioresorbable substrate is at least partially resorbed, thereby establishing conformal contact between the implantable biomedical device and the target tissue in the biological environment.

Rogers, John A; Kim, Dae-Hyeong; Omenetto, Fiorenzo; Kaplan, David L; Litt, Brian; Viventi, Jonathan; Huang, Yonggang; Amsden, Jason

2014-03-04T23:59:59.000Z

276

Pressure balanced drag turbine mass flow meter  

DOE Patents (OSTI)

The density of the fluid flowing through a tubular member may be measured by a device comprising a rotor assembly suspended within the tubular member, a fluid bearing medium for the rotor assembly shaft, independent fluid flow lines to each bearing chamber, and a scheme for detection of any difference between the upstream and downstream bearing fluid pressures. The rotor assembly reacts to fluid flow both by rotation and axial displacement; therefore concurrent measurements may be made of the velocity of blade rotation and also bearing pressure changes, where the pressure changes may be equated to the fluid momentum flux imparted to the rotor blades. From these parameters the flow velocity and density of the fluid may be deduced.

Dacus, M.W.; Cole, J.H.

1980-04-23T23:59:59.000Z

277

Pressure balanced drag turbine mass flow meter  

DOE Patents (OSTI)

The density of the fluid flowing through a tubular member may be measured by a device comprising a rotor assembly suspended within the tubular member, a fluid bearing medium for the rotor assembly shaft, independent fluid flow lines to each bearing chamber, and a scheme for detection of any difference between the upstream and downstream bearing fluid pressures. The rotor assembly reacts to fluid flow both by rotation and axial displacement; therefore concurrent measurements may be made of the velocity of blade rotation and also bearing pressure changes, where the pressure changes may be equated to the fluid momentum flux imparted to the rotor blades. From these parameters the flow velocity and density of the fluid may be deduced.

Dacus, Michael W. (Gilbert, AR); Cole, Jack H. (Fayetteville, AR)

1982-01-01T23:59:59.000Z

278

Certification of flow monitors for utility boilers  

SciTech Connect

The use of CEMS for measuring opacity, SO{sub 2}, NO{sub x}, CO{sub 2}, and O{sub 2} concentration was well proven prior to implementing the Part 75 CEMS program. However, the use of continuous flue gas flow monitoring devices is a relatively new instrumental technique. Limited operating data for flow monitors were available and little or no certification relative accuracy data were available prior to the Summer of 1993. However, because of the Part 75 requirements, utility companies contracted with CEMS vendors to install, start-up and certify flow monitors on Phase 1 and Phase 2 units. This paper presents the certification history of three different types of flow monitors (ultrasonic, pressure differential ({Delta}p) and thermal) installed at various utilities in the US. The data and experience was obtained from approximately 100 Phase 1 CEMS units and 200 Phase 1 CEMS units.

Bensink, J.; Beachler, D.; Joseph, J.

1995-12-31T23:59:59.000Z

279

Investigation of technology for monitoring UF/sub 6/ mass flow  

SciTech Connect

The applicability of gas flow meters, in-line enrichment monitors, and instruments for measuring uranium or UF/sub 6/ concentrations in process streams as a means for verifying declared plant throughput have been investigated. The study was performed to assist the International Atomic Energy Agency in the development of an effective international safeguards approach for aerodynamic uranium enrichment plants. Because the process gas in an aerodynamic enrichment facility is a mixture of UF/sub 6/ and H/sub 2/, a mass flow measurement in conjunction with a measurement of the uranium (or UF/sub 6/) concentration in the process gas is required to quantify the amount of uranium being fed into, and withdrawn from, the cascades for nuclear materials accountability verification. In-line enrichment monitors developed for the US gas centrifuge enrichment plant are found to be applicable only to pure UF/sub 6/ streams. Of the five gas flow meters evaluated, the orifice meter and the pitot tube meter are judged the best choices for the proposed applications: the first is recommended for low-velocity gas, small diameter piping; the latter, for high-velocity gas, large diameter piping. Of the six procedures evaluated for measurement of uranium or UF/sub 6/ concentration in a mixed process stream, infrared-ultraviolet-visible spectrophotometry is judged to be the best procedure currently available to perform the required measurement. 4 refs., 3 figs., 3 tabs.

Cooley, J.N.; Moran, B.W.; Swindle, D.W. Jr.

1987-06-01T23:59:59.000Z

280

Analysis of the flow imbalance on the profile shape during the extrusion of thin magnesium sheets  

SciTech Connect

The extrusion process facilitates the production of magnesium sheets featuring a very thin thickness as well as excellent surface properties by using a single process step only. However, the extrusion of the magnesium sheets applying not optimized process parameters, e.g. low billet temperature or/ and poorly deformable magnesium alloy, produce pronounced buckling and waving of the extruded sheets as well as a variation of accuracy in profile shape along the cross section. The present investigation focuses on the FEM-simulation of the extrusion of magnesium sheets in order to clarify the origin of the mentioned effects. The simulations identify the flow imbalance during extrusion as the main critical factor. Due to the flow imbalance after passing the die a large compression stress zone is formed causing the buckling and waving of the thin sheets. Furthermore, the simulations of the magnesium sheet extrusion reveal that the interaction of the material flow gradients along the width and along the thickness direction near the die orifice lead to the variation of the accuracy in profile shape.

Gall, Sven [Forschungszentrum Strangpressen, Technische Universität Berlin, Gustav-Meyer-Allee 25, Berlin, 13355, Germany, and Metallische Werkstoffe, Technische Universität Berlin, Ernst-Reuter-Platz 1, Berlin, 10587 (Germany); Müller, Sören [Forschungszentrum Strangpressen, Technische Universität Berlin, Gustav-Meyer-Allee 25, Berlin, 13355 (Germany); Reimers, Walter [Metallische Werkstoffe, Technische Universität Berlin, Ernst-Reuter-Platz 1, Berlin, 10587 (Germany)

2013-12-16T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Encapsulation methods for organic electrical devices  

DOE Patents (OSTI)

The disclosure provides methods and materials suitable for use as encapsulation barriers in electronic devices. In one embodiment, for example, there is provided an electroluminescent device or other electronic device encapsulated by alternating layers of a silicon-containing bonding material and a ceramic material. The encapsulation methods provide, for example, electronic devices with increased stability and shelf-life. The invention is useful, for example, in the field of microelectronic devices.

Blum, Yigal D.; Chu, William Siu-Keung; MacQueen, David Brent; Shi, Yijian

2013-06-18T23:59:59.000Z

282

DEVELOPMENT OF A CANDLE FILTER FAILURE SAFEGUARD DEVICE  

SciTech Connect

The full-flow mechanical safeguard device (FFMSGD) has been developed under contract to the National Energy Technology Laboratory (NETL) to address problems with the reliability of ceramic candle filter elements installed on high-temperature, high-pressure (HTHP) Hot Gas Cleanup (HGCU) filters. Although systems candle filters are expected to perform satisfactorily when in good operating condition, the failure of even a single filter element can increase the filter system outlet dust loading enough to potentially damage gas turbine blades, contaminate other downstream processes, and limit the availability of the power system. Filter failure safeguard devices that are installed on each individual candle filter element are envisioned as a guarantee of a candle filter system's ability to withstand some number of element failures and continue operation without these negative consequences. The intention of the FFMSGD is to provide this guarantee without incurring any significant pressure drop penalty or constraining the filter system's reverse-pulse cleaning procedures. The FFMSGD provides a clear flow path for filtered and reverse-flow cleaning gases when its filter element is intact, and activates to provide a positive mechanical seal against gas flow in either direction when its filter element breaks or fails. This activation is induced by the increase in the flow rate of gas through the device in event of filter failure. The FFMSGD is designed to be easily removed and reconditioned when the filter system is taken off line for routine maintenance. This report is intended to be issued with a companion appendix. As instructed in Section J.12 of Contract No. DE-AC26-99FT40678, all the restricted, proprietary, and patentable information (not yet disclosed through the patent application process) related to the FFMSGD and its evaluation under this contract has been included only in the appendix. This Final Report, which is available to the public, contains background information and general descriptions of the operating principles of the FFMSGD. This report also describes the results of various evaluations of the device at room temperature and in HTHP environments. This Final Report also includes discussions of commercialization issues. For clarity and completeness, all of the information contained in this Final Report has also been included in the appendix.

Todd R. Snyder

2002-03-29T23:59:59.000Z

283

Mechanical scriber for semiconductor devices  

DOE Patents (OSTI)

A mechanical scriber using a scribing tip, such as a diamond, provides controlled scriber forces with a spring-loaded compound lever arrangement. The scribing force and range of scribing depth are adjusted by a pair of adjustable micrometer heads. A semiconductor device, such as a multilayer solar cell, can be formed into scribed strips at each layer. 5 figs.

Lin, P.T.

1985-03-05T23:59:59.000Z

284

Chapter 13 - Covert Listening Devices  

Science Journals Connector (OSTI)

Publisher Summary This chapter discusses a variety of cover listening devices that might be available to the Zukin. Although a range of eavesdropping tools is available, one should gravitate toward passive methods of eavesdropping. Such methods can enable to avoid entering the locations that one wish to monitor. It discusses the use of radio frequency scanners for monitoring several methods of communication. One can use such devices to monitor Bluetooth, cellular, and data networks, and other radio sources as well. Although specialized equipment is required for listening to some forms of radio communication, others are accessible with low-cost devices off the shelf or equipment that we can cobble together ourselves. It discusses the use of key loggers, in both hardware and software forms. Such devices can be used to record everything from keystrokes to complete video of the user's desktop for later perusal. It also discusses some of the issues in using key loggers, such as placement, retrieving data, and taking steps to not be discovered. It concludes with clandestinely placed sensors, including video and audio bugs.

Thomas Wilhelm; Jason Andress

2011-01-01T23:59:59.000Z

285

High performance thermoelectric nanocomposite device  

DOE Patents (OSTI)

A thermoelectric device includes a nanocomposite material with nanowires of at least one thermoelectric material having a predetermined figure of merit, the nanowires being formed in a porous substrate having a low thermal conductivity and having an average pore diameter ranging from about 4 nm to about 300 nm.

Yang, Jihui (Lakeshore, CA); Snyder, Dexter D. (Birmingham, MI)

2011-10-25T23:59:59.000Z

286

Graphene Growth and Device Integration  

E-Print Network (OSTI)

screens, photonic applications, energy generation, and batteries [3], [12], [13]. The first graphene filmsINVITED P A P E R Graphene Growth and Device Integration This paper describes one of the emerging methods for growing grapheneVthe chemical vapor deposition methodVwhich is based on a catalytic reaction

287

Analysis of operations and cyber security policies for a system of cooperating Flexible Alternating Current Transmission System (FACTS) devices.  

SciTech Connect

Flexible Alternating Current Transmission Systems (FACTS) devices are installed on electric power transmission lines to stabilize and regulate power flow. Power lines protected by FACTS devices can increase power flow and better respond to contingencies. The University of Missouri Rolla (UMR) is currently working on a multi-year project to examine the potential use of multiple FACTS devices distributed over a large power system region in a cooperative arrangement in which the FACTS devices work together to optimize and stabilize the regional power system. The report describes operational and security challenges that need to be addressed to employ FACTS devices in this way and recommends references, processes, technologies, and policies to address these challenges.

Phillips, Laurence R.; Tejani, Bankim; Margulies, Jonathan; Hills, Jason L.; Richardson, Bryan T.; Baca, Micheal J.; Weiland, Laura

2005-12-01T23:59:59.000Z

288

Energy Loss Distribution in the Taylor-Couette Flow between Concentric Rotating Cylinders  

E-Print Network (OSTI)

The distribution of energy loss due to viscosity friction in plane Couette flow and Taylor-Couette Flow between concentric rotating cylinders are studied in detail for various flow conditions. The energy loss is related to the industrial processes in some fluid delivery devices and has significant influence on the flow efficiency, flow stability, turbulent transition, mixing, and heat transfer behaviours, etc. Therefore, it is very helpful to know about the energy loss distribution in the flow domain and to know its influence on the flow for understanding the flow physics. The calculation method of the energy loss distribution in the Taylor-Couette Flow between concentric rotating cylinders has not been found in open literature. In this note, the principle and the calculation are given for single cylinder rotating of inner or outer cylinder, and counter and same direction rotating of two cylinders. For comparison, the distribution of energy loss in a plane Couette flow is also derived for various flow conditi...

Dou, H S; Phan-Thien, N; Yeo, K S; Dou, Hua-Shu; Khoo, Boo Cheong; Phan-Thien, Nhan; Yeo, Khoon Seng

2005-01-01T23:59:59.000Z

289

Evaluation of Miscellaneous and Electronic Device Energy Use in Hospitals  

E-Print Network (OSTI)

of Devices Device Category Infusion Pump Sphygmomanometer,Fixed Sphygmomanometer, Portable Pulse Oximeters, Portable

Black, Douglas R.

2014-01-01T23:59:59.000Z

290

Propeller Flow Meter  

E-Print Network (OSTI)

Propeller flow meters are commonly used to measure water flow rate. They can also be used to estimate irrigation water use. This publication explains how to select, install, read and maintain propeller flow meters....

Enciso, Juan; Santistevan, Dean; Hla, Aung K.

2007-10-01T23:59:59.000Z

291

Dispersed flow film boiling  

E-Print Network (OSTI)

Dispersed flow consists of small liquid droplets entrained in a flowing vapor. This flow regime can occur in cryogenic equipment, in steam generators, and during nuclear reactor loss of coolant accidents. A theoretical ...

Yoder, Graydon L.

1980-01-01T23:59:59.000Z

292

Bacteria in shear flow  

E-Print Network (OSTI)

Bacteria are ubiquitous and play a critical role in many contexts. Their environment is nearly always dynamic due to the prevalence of fluid flow: creeping flow in soil, highly sheared flow in bodily conduits, and turbulent ...

Marcos, Ph.D. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

293

Hardware device binding and mutual authentication  

DOE Patents (OSTI)

Detection and deterrence of device tampering and subversion by substitution may be achieved by including a cryptographic unit within a computing device for binding multiple hardware devices and mutually authenticating the devices. The cryptographic unit includes a physically unclonable function ("PUF") circuit disposed in or on the hardware device, which generates a binding PUF value. The cryptographic unit uses the binding PUF value during an enrollment phase and subsequent authentication phases. During a subsequent authentication phase, the cryptographic unit uses the binding PUF values of the multiple hardware devices to generate a challenge to send to the other device, and to verify a challenge received from the other device to mutually authenticate the hardware devices.

Hamlet, Jason R; Pierson, Lyndon G

2014-03-04T23:59:59.000Z

294

Flow Distances on Open Flow Networks  

E-Print Network (OSTI)

Open flow network is a weighted directed graph with a source and a sink, depicting flux distributions on networks in the steady state of an open flow system. Energetic food webs, economic input-output networks, and international trade networks, are open flow network models of energy flows between species, money or value flows between industrial sectors, and goods flows between countries, respectively. Flow distances (first-passage or total) between any given two nodes $i$ and $j$ are defined as the average number of transition steps of a random walker along the network from $i$ to $j$ under some conditions. They apparently deviate from the conventional random walk distance on a closed directed graph because they consider the openness of the flow network. Flow distances are explicitly expressed by underlying Markov matrix of a flow system in this paper. With this novel theoretical conception, we can visualize open flow networks, calculating centrality of each node, and clustering nodes into groups. We apply fl...

Guo, Liangzhu; Shi, Peiteng; Wang, Jun; Huang, Xiaohan; Zhang, Jiang

2015-01-01T23:59:59.000Z

295

Ion plated electronic tube device  

DOE Patents (OSTI)

An electronic tube and associated circuitry which is produced by ion plating techniques. The process is carried out in an automated process whereby both active and passive devices are produced at very low cost. The circuitry is extremely reliable and is capable of functioning in both high radiation and high temperature environments. The size of the electronic tubes produced are more than an order of magnitude smaller than conventional electronic tubes.

Meek, T.T.

1983-10-18T23:59:59.000Z

296

Infrared emitting device and method  

DOE Patents (OSTI)

An infrared emitting device and method. The infrared emitting device comprises a III-V compound semiconductor substrate upon which are grown a quantum-well active region having a plurality of quantum-well layers formed of a ternary alloy comprising InAsSb sandwiched between barrier layers formed of a ternary alloy having a smaller lattice constant and a larger energy bandgap than the quantum-well layers. The quantum-well layers are preferably compressively strained to increase the threshold energy for Auger recombination; and a method is provided for determining the preferred thickness for the quantum-well layers. Embodiments of the present invention are described having at least one cladding layer to increase the optical and carrier confinement in the active region, and to provide for waveguiding of the light generated within the active region. Examples have been set forth showing embodiments of the present invention as surface- and edge-emitting light emitting diodes (LEDs), an optically-pumped semiconductor laser, and an electrically-injected semiconductor diode laser. The light emission from each of the infrared emitting devices of the present invention is in the midwave infrared region of the spectrum from about 2 to 6 microns.

Kurtz, Steven R. (Albuquerque, NM); Biefeld, Robert M. (Albuquerque, NM); Dawson, L. Ralph (Albuquerque, NM); Howard, Arnold J. (Albuquerque, NM); Baucom, Kevin C. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

297

Release strategies for making transferable semiconductor structures, devices and device components  

DOE Patents (OSTI)

Provided are methods for making a device or device component by providing a multilayer structure having a plurality of functional layers and a plurality of release layers and releasing the functional layers from the multilayer structure by separating one or more of the release layers to generate a plurality of transferable structures. The transferable structures are printed onto a device substrate or device component supported by a device substrate. The methods and systems provide means for making high-quality and low-cost photovoltaic devices, transferable semiconductor structures, (opto-)electronic devices and device components.

Rogers, John A; Nuzzo, Ralph G; Meitl, Matthew; Ko, Heung Cho; Yoon, Jongseung; Menard, Etienne; Baca, Alfred J

2014-11-25T23:59:59.000Z

298

Voltage Control Devices on the IEEE 8500 Node Test Feeder  

SciTech Connect

The IEEE Test Cases provide researchers with distribution system models that can be used to validate new analytic methods. The newest of these models is the 8500-node test feeder which contains multiple devices for voltage control. In addition to a substation regulator there are multiple inline regulators as well as capacitor banks. This paper will discuss the detail in which voltage control devises should be modeled when examining large distribution systems. This discussion will include issues associated with power flow analysis for a single time step as well as for time series analysis.

Schneider, Kevin P.; Fuller, Jason C.

2010-01-06T23:59:59.000Z

299

Transport mechanisms acting in toroidal devices: A theoretician's view  

SciTech Connect

Understanding the basic mechanisms of transport in toroidal confinement devices remains one of the more challenging scientific issues in magnetic confinement. At the same time, it is a critical issue for the magnetic fusion program. Recent progress in understanding fluctuations and transport has been fostered by the development and use of new diagnostics, bringing new perspectives on these studies. This has stimulated new theoretical developments. A view of the most recent issues and progress in this area is given. The role of long wavelengths in core transport and the relation between shear flows and turbulence at the plasma edge are the primary topics considered.

Carreras, B.A.

1993-01-01T23:59:59.000Z

300

Microfluidic preparative free-flow isoelectric focusing in a triangular channel: System development and characterization  

E-Print Network (OSTI)

A preparative scale free-flow IEF device is developed and characterized with the aim of addressing needs of molecular biologists working with protein samples on the milligrams and milliliters scale. A triangular-shape ...

Wen, Jian

Note: This page contains sample records for the topic "flow orifice devices" 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

Stability study of a constant-volume thin film flow J. M. Gomba,* J. Diez,  

E-Print Network (OSTI)

, there is an increas- ing interest in understanding flows in microscopic devices designed to propel and mix small volumes of liquids. Micro- metric ducts, pumps, turbines, and valves are all examples of such small

Kondic, Lou

302

The effect of die geometry on extruded paste flow for continuous production of pharmaceutical tablets  

E-Print Network (OSTI)

The design of an extruder-based continuous tablet forming process of a sample active pharmaceutical ingredient (API) and ethyl acetate requires a device to form and compress the tablets. The flow of the wet extrusion is ...

Nagaraj, Aditi

2011-01-01T23:59:59.000Z

303

Design and testing of a microvalve capable of precisely controlling low fluidic flow rates  

E-Print Network (OSTI)

Development of the design, manufacture, and testing for a gas flow regulating microvalve is presented herein. The microvalve project served as a test bed for new micromachining techniques and for exploration of MEMS devices ...

Daniel, Cody R

2011-01-01T23:59:59.000Z

304

Coherent anti-Stokes Raman scattering microscopy for quantitative characterization of mixing and flow in microfluidics  

Science Journals Connector (OSTI)

We present an optical, noninvasive and label-free approach to characterize flow profiles in microfluidic devices. Coherent anti-Stokes Raman scattering signals were used to map the...

Schafer, Dawn; Müller, Michiel; Bonn, Mischa; Marr, David W M; van Maarseveen, Jan; Squier, Jeff

2009-01-01T23:59:59.000Z

305

Definition: Energy Management Device | Open Energy Information  

Open Energy Info (EERE)

Device Device Jump to: navigation, search Dictionary.png Energy Management Device A device in the customer's premise, including hardware and software, designed to control the operation of other energy devices according to customer preferences and objectives such as reducing energy costs, or maintaining comfort or convenience. Controlled devices could include, but are not limited to, thermostats, lighting, and smart appliances. Among other control inputs, an energy management device can accept energy pricing signals from a utility or third party energy services provider.[1] Related Terms energy, smart appliance References ↑ https://www.smartgrid.gov/category/technology/energy_management_device [[Ca LikeLike UnlikeLike You like this.Sign Up to see what your friends like.

306

Single molecule detection using charge-coupled device array technology  

SciTech Connect

A technique for the detection of single fluorescent chromophores in a flowing stream is under development. This capability is an integral facet of a rapid DNA sequencing scheme currently being developed by Los Alamos National Laboratory. In previous investigations, the detection sensitivity was limited by the background Raman emission from the water solvent. A detection scheme based on a novel mode of operating a Charge-Coupled Device (CCD) is being developed which should greatly enhance the discrimination between fluorescence from a single molecule and the background Raman scattering from the solvent. Register shifts between rows in the CCD are synchronized with the sample flow velocity so that fluorescence from a single molecule is collected in a single moving charge packet occupying an area approaching that of a single pixel while the background is spread evenly among a large number of pixels. Feasibility calculations indicate that single molecule detection should be achieved with an excellent signal-to-noise ratio.

Denton, M.B.

1992-07-29T23:59:59.000Z

307

Application Study of the Pump Water Flow Station for Building Energy Consumption Monitoring and Control Optimization  

E-Print Network (OSTI)

. For example, the Venturi meter is commonly used for steam flow measurement, but it is less commonly used for water flow measurement because of the poor accuracy at low flow rates and high installation cost. 2) Displacement flow meter: The meter works... by using the fluid to rotate or displace a device inserted into the flow stream, e.g., a turbine flow meter, tangential paddlewheel meter, etc. It causes extra pressure drop. The bearing wears out and calibration is often needed to ensure accuracy...

Liu, G.; Liu, M.

2006-01-01T23:59:59.000Z

308

Fabrication of Small Diesel Fuel Injector Orifices  

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

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

309

Operation of orifice meter chart integrators  

SciTech Connect

When properly maintained and operated, the chart integrator can provide reliable chart integration for many years. The overall accuracy of the integration process win be determined by the proficiency of the operator as well as the upkeep and calibration of the chart integrator.

Gray, C. [EMC Services Co., Inc., Arlington, TX (United States)

1995-12-01T23:59:59.000Z

310

Fabrication of Small Diesel Fuel Injector Orifices  

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

(if applicable) - NA Barriers Approach Performance Measures and Accomplishments Technology Transfer PublicationsPatents Plans for Next Fiscal Year Summary 3 Purpose of Work...

311

Acoustic enhancement for photo detecting devices  

DOE Patents (OSTI)

Provided are improvements to photo detecting devices and methods for enhancing the sensitivity of photo detecting devices. A photo detecting device generates an electronic signal in response to a received light pulse. An electro-mechanical acoustic resonator, electrically coupled to the photo detecting device, damps the electronic signal and increases the signal noise ratio (SNR) of the electronic signal. Increased photo detector standoff distances and sensitivities will result.

Thundat, Thomas G; Senesac, Lawrence R; Van Neste, Charles W

2013-02-19T23:59:59.000Z

312

First Thermonuclear Device Successfully Tested | National Nuclear...  

National Nuclear Security Administration (NNSA)

Thermonuclear Device Successfully Tested | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing...

313

Portable wastewater flow meter  

DOE Patents (OSTI)

A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under fill pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

1999-02-02T23:59:59.000Z

314

Portable wastewater flow meter  

DOE Patents (OSTI)

A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under full pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

1990-01-01T23:59:59.000Z

315

Student Mobile Device Survey Table of Contents  

E-Print Network (OSTI)

CiCS. Student Mobile Device Survey 2011 Table of Contents Section Number Subject Page 1 With little information and supporting evidence on student ownership and usage of mobile devices at the University of Sheffield, making decisions on our services and support for mobile devices has been based

Martin, Stephen John

316

Portable control device for networked mobile robots  

DOE Patents (OSTI)

A handheld control device provides a way for controlling one or multiple mobile robotic vehicles by incorporating a handheld computer with a radio board. The device and software use a personal data organizer as the handheld computer with an additional microprocessor and communication device on a radio board for use in controlling one robot or multiple networked robots.

Feddema, John T. (Albuquerque, NM); Byrne, Raymond H. (Albuquerque, NM); Bryan, Jon R. (Edgewood, NM); Harrington, John J. (Albuquerque, NM); Gladwell, T. Scott (Albuquerque, NM)

2002-01-01T23:59:59.000Z

317

Protecting health information on mobile devices  

Science Journals Connector (OSTI)

Mobile applications running on devices such as smart phones and tablets will be increasingly used to provide convenient access to health information to health professionals and patients. Also, patients will use these devices to transmit health information ... Keywords: healthcare data protection, mobile devices, security

Musheer Ahmed; Mustaque Ahamad

2012-02-01T23:59:59.000Z

318

Technische Universiteit Eindhoven Opto-Electronic Devices  

E-Print Network (OSTI)

in micro­ and optoelectronic devices. TUHH Heinrich Voss Iterative projection methods New Orleans 2005 4 and their potential for applications in micro­ and optoelectronic devices. In such nanostructures, the free carriers of their special physical properties and their potential for applications in micro­ and optoelectronic devices

Lipari, Giuseppe

319

Wave energy devices with compressible volumes  

Science Journals Connector (OSTI)

...author and source are credited. Wave energy devices with compressible volumes Adi...1BJ, UK We present an analysis of wave energy devices with air-filled compressible...wave period range of about-4s. wave energy|compressible volume|axisymmetric device...

2014-01-01T23:59:59.000Z

320

Superconducting flux coupled fast switching device from YBCo films. Final report, 1 September 1991-29 February 1992  

SciTech Connect

Applications of high-temperature superconducting (HTSC) materials, especially thin-film YBaCuO (123), to microelectronic devices have been limited by materials-related fabrication problems. Magnetic-flux-coupled devices are less limited by these problems but have not been widely explored. The innovation for this program was demonstration of a flux-coupled device that was: (1) simple to fabricate, (2) based on silicon substrates, (3) shows excellent flux-flow dynamics, and (4) can be implemented in switching or amplifying circuits. In Phase I the authors demonstrated the potential for developing this device utilizing high critical-current YBCO thin films on yttria-stabilized zirconia (YSZ)-buffered Si substrates. The devices are designed to take advantage of these new materials opportunities, are within realistic materials and fabrication constraints, and are projected to operate from dc to at least 10 GHz. The flux-flow devices (FFD) that have been fabricated include: externally-activated magnetic switch, superconducting transformer, and flux-flow (transistor-like) switch. The use of Si wafers not only allows high-quality quality films on large (or very thin) and inexpensive substrates, but also many design configurations with great potential for wafer-scale, hybrid integration with semiconductor electronics. Thin Film Microelectronics, Superconducting Transistor, Three-Terminal Active Device, Pulsed Laser Ablation-Deposition.

Fenner, D.B.

1992-04-30T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

MHK Technologies/GreenFlow Turbines | Open Energy Information  

Open Energy Info (EERE)

GreenFlow Turbines GreenFlow Turbines < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage GreenFlow Turbines.jpg Technology Profile Primary Organization Gulfstream Technologies Technology Resource Click here Current Technology Type Click here Cross Flow Turbine Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description Targeted at commercial sites with large water flow volume These hydro turbines range in size from 50kW to 750kW with many sites able to house multiple units Technology Dimensions Device Testing Date Submitted 55:53.9 << Return to the MHK database homepage Retrieved from "http://en.openei.org/w/index.php?title=MHK_Technologies/GreenFlow_Turbines&oldid=681584

322

Protective laser beam viewing device  

DOE Patents (OSTI)

A protective laser beam viewing system or device including a camera selectively sensitive to laser light wavelengths and a viewing screen receiving images from the laser sensitive camera. According to a preferred embodiment of the invention, the camera is worn on the head of the user or incorporated into a goggle-type viewing display so that it is always aimed at the area of viewing interest to the user and the viewing screen is incorporated into a video display worn as goggles over the eyes of the user.

Neil, George R.; Jordan, Kevin Carl

2012-12-18T23:59:59.000Z

323

Health Sciences Library Resources for Mobile Device Users Wireless Access for Mobile Devices  

E-Print Network (OSTI)

1 Health Sciences Library Resources for Mobile Device Users Wireless Access for Mobile Devices to configure your mobile device; instructions are available at http://www.usask.ca/ict/services/network-services/wireless/index.php - Assistance with accessing University services (such as wireless) on mobile devices is available from the ICT

Peak, Derek

324

Mobile Communication Device Allowance Authorization Form Revised: April 2011 MOBILE COMMUNICATION DEVICE ALLOWANCE AUTHORIZATION FORM  

E-Print Network (OSTI)

Mobile Communication Device Allowance Authorization Form Revised: April 2011 MOBILE COMMUNICATION list your CURRENT PLAN features: Mobile service provider Name: ________ Monthly Charge: $ Device.edu/policy/itc/FINAL%20Policy%20on%20Mobile%20Comm%20Devices.htm I have read the Mobile Communication Devices Policy

Dyer, Bill

325

Electrical device fabrication from nanotube formations  

DOE Patents (OSTI)

A method for forming nanotube electrical devices, arrays of nanotube electrical devices, and device structures and arrays of device structures formed by the methods. Various methods of the present invention allow creation of semiconducting and/or conducting devices from readily grown SWNT carpets rather than requiring the preparation of a patterned growth channel and takes advantage of the self-controlling nature of these carpet heights to ensure a known and controlled channel length for reliable electronic properties as compared to the prior methods.

Nicholas, Nolan Walker; Kittrell, W. Carter; Kim, Myung Jong; Schmidt, Howard K.

2013-03-12T23:59:59.000Z

326

Organic light emitting devices for illumination  

SciTech Connect

An organic light emitting device an a method of obtaining illumination from such a device is provided. The device has a plurality of regions, each region having an organic emissive layer adapted to emit a different spectrum of light. The regions in combination emit light suitable for illumination purposes. The area of each region may be selected such that the device is more efficient than an otherwise equivalent device having regions of equal size. The regions may have an aspect ratio of at least about four. All parts of any given region may be driven at the same current.

Hack, Michael (Lambertville, NJ); Lu, Min-Hao Michael (Lawrenceville, NJ); Weaver, Michael S. (Princeton, NJ)

2012-01-24T23:59:59.000Z

327

Using audio in secure device pairing  

Science Journals Connector (OSTI)

Secure pairing of electronic devices is an important issue that must be addressed in many contexts. In the absence of prior security context, the need to involve the user in the pairing process is a prominent challenge. In this paper, we investigate the use of the audio channel for human-assisted device pairing. First we assume a common (insecure) wireless channel between devices. We then obviate the assumption of a pre-existing common channel with a single-channel device pairing approach only based on audio. Both approaches are applicable to a wide range of devices and place light burden on the user.

Michael T. Goodrich; Michael Sirivianos; John Solis; Claudio Soriente; Gene Tsudik; Ersin Uzun

2009-01-01T23:59:59.000Z

328

Natural Gas Variability In California: Environmental Impacts And Device  

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

Natural Gas Variability In California: Environmental Impacts And Device Natural Gas Variability In California: Environmental Impacts And Device Performance - Experimental Evaluation Of Installed Cooking Exhaust Fan Performance Title Natural Gas Variability In California: Environmental Impacts And Device Performance - Experimental Evaluation Of Installed Cooking Exhaust Fan Performance Publication Type Report Year of Publication 2011 Authors Singer, Brett C., William W. Delp, and Michael G. Apte Publisher Lawrence Berkeley National Laboratory City Berkeley, CA Keywords energy analysis and environmental impacts department Abstract The installed performance of cooking exhaust fans was evaluated through residential field experiments conducted on a sample of 15 devices varying in design and other characteristics. The sample included two rear downdraft systems, two under-cabinet microwave over range units, three different installations of an under-cabinet model with grease screens across the bottom and no capture hood, two devices with grease screens covering the bottom of a large capture hood (one under-cabinet, one wall-mount chimney), four under-cabinet open hoods, and two open hoods with chimney mounts over islands. Performance assessment included measurement of airflow and sound levels across fan settings and experiments to quantify the contemporaneous capture efficiency for the exhaust generated by natural gas cooking burners. Capture efficiency is defined as the fraction of generated pollutants that are removed through the exhaust and thus not available for inhalation of household occupants. Capture efficiency was assessed for various configurations of burner use (e.g., single front, single back, combination of one front and one back, oven) and fan speed setting. Measured airflow rates were substantially lower than the levels noted in product literature for many of the units. This shortfall was observed for several units costing more than $1000. Capture efficiency varied widely (from < 5 percent to roughly 100 percent) across devices and across conditions for some devices. As expected, higher capture efficiencies were achieved with higher fan settings and the associated higher air flow rates. In most cases, capture efficiencies were substantially higher for rear burners than for front burners. The best and most consistent performance was observed for open hoods that covered all cooktop burners and operated at higher airflow rates. The lowest capture efficiencies were measured when a front burner was used with a rear backdraft system or with lowest fan setting for above-the-range systems that do not cover the front burners.

329

3.2 "Lab-on-a-Chip" A Lab-on-a-Chip (LOC) device, also known as a micro-total-analytical system  

E-Print Network (OSTI)

(microTAS) or microfluidics device, is a device that can integrate miniaturized laboratory functions or novel sensing systems, fluid flow control concepts from microfluidics, and the suite of fabrication of discovery--microfluidics--was developed in the 1990s. Microfluidics is an #12;101 interdisciplinary field

330

Catalytic Device International LLC | Open Energy Information  

Open Energy Info (EERE)

Catalytic Device International LLC Catalytic Device International LLC Jump to: navigation, search Name Catalytic Device International LLC Place Pleasanton, California Product California-based, firm focused on portable, heat-on-demand products. References Catalytic Device International LLC[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Catalytic Device International LLC is a company located in Pleasanton, California . References ↑ "Catalytic Device International LLC" Retrieved from "http://en.openei.org/w/index.php?title=Catalytic_Device_International_LLC&oldid=343285" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages

331

Infrared emitting device and method  

DOE Patents (OSTI)

The infrared emitting device comprises a III-V compound semiconductor substrate upon which are grown a quantum-well active region having a plurality of quantum-well layers formed of a ternary alloy comprising InAsSb sandwiched between barrier layers formed of a ternary alloy having a smaller lattice constant and a larger energy bandgap than the quantum-well layers. The quantum-well layers are preferably compressively strained to increase the threshold energy for Auger recombination; and a method is provided for determining the preferred thickness for the quantum-well layers. Embodiments of the present invention are described having at least one cladding layer to increase the optical and carrier confinement in the active region, and to provide for waveguiding of the light generated within the active region. Examples have been set forth showing embodiments of the present invention as surface- and edge-emitting light emitting diodes (LEDs), an optically-pumped semiconductor laser, and an electrically-injected semiconductor diode laser. The light emission from each of the infrared emitting devices of the present invention is in the midwave infrared region of the spectrum from about 2 to 6 microns. 8 figs.

Kurtz, S.R.; Biefeld, R.M.; Dawson, L.R.; Howard, A.J.; Baucom, K.C.

1997-04-29T23:59:59.000Z

332

River Devices to Recover Energy with Advanced Materials (River DREAM)  

SciTech Connect

The purpose of this project is to develop a generator called a Galloping Hydroelectric Energy Extraction Device (GHEED). It uses a galloping prism to convert water flow into linear motion. This motion is converted into electricity via a dielectric elastomer generator (DEG). The galloping mechanism and the DEG are combined to create a system to effectively generate electricity. This project has three research objectives: 1. Oscillator development and design a. Characterize galloping behavior, evaluate control surface shape change on oscillator performance and demonstrate shape change with water flow change. 2. Dielectric Energy Generator (DEG) characterization and modeling a. Characterize and model the performance of the DEG based on oscillator design 3. Galloping Hydroelectric Energy Extraction Device (GHEED) system modeling and integration a. Create numerical models for construction of a system performance model and define operating capabilities for this approach Accomplishing these three objectives will result in the creation of a model that can be used to fully define the operating parameters and performance capabilities of a generator based on the GHEED design. This information will be used in the next phase of product development, the creation of an integrated laboratory scale generator to confirm model predictions.

McMahon, Daniel P. [Bayer MaterialScience LLC

2013-07-03T23:59:59.000Z

333

High Temperature, High Pressure Devices for Zonal Isolation in Geothermal  

Open Energy Info (EERE)

Temperature, High Pressure Devices for Zonal Isolation in Geothermal Temperature, High Pressure Devices for Zonal Isolation in Geothermal Wells Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title High Temperature, High Pressure Devices for Zonal Isolation in Geothermal Wells Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 Zonal Isolation Project Description For Enhanced Geothermal Systems (EGS), high-temperature high-pressure zonal isolation tools capable of withstanding the downhole environment are needed. In these wells the packers must withstand differential pressures of 5,000 psi at more than 300°C, as well as pressures up to 20,000 psi at 200°C to 250°C. Furthermore, when deployed these packers and zonal isolation tools must form a reliable seal that eliminates fluid loss and mitigates short circuiting of flow from injectors to producers. At this time, general purpose open-hole packers do not exist for use in geothermal environments, with the primary technical limitation being the poor stability of existing elastomeric seals at high temperatures.

334

Microfluidics for flow cytometric analysis of cells and particles  

Science Journals Connector (OSTI)

This review describes recent developments in microfabricated flow cytometers and related microfluidic devices that can detect, analyze, and sort cells or particles. The high-speed analytical capabilities of flow cytometry depend on the cooperative use of microfluidics, optics and electronics. Along with the improvement of other components, replacement of conventional glass capillary-based fluidics with microfluidic sample handling systems operating in microfabricated structures enables volume- and power-efficient, inexpensive and flexible analysis of particulate samples. In this review, we present various efforts that take advantage of novel microscale flow phenomena and microfabrication techniques to build microfluidic cell analysis systems.

Dongeun Huh; Wei Gu; Yoko Kamotani; James B Grotberg; Shuichi Takayama

2005-01-01T23:59:59.000Z

335

Development of a new duct leakage test: DeltaQ  

E-Print Network (OSTI)

orifice on the blower door to eliminate this problem at the expense of reduced air flow measurement accuracy.

Walker, I.S.; Sherman, M.H.; Wempen, J.; Wang, D.; McWilliams, J.A.; Dickerhoff, D.J.

2001-01-01T23:59:59.000Z

336

Electro-optic component mounting device  

DOE Patents (OSTI)

A technique is provided for integrally mounting a device such as an electro-optic device (50) in a transmission line to avoid series resonant effects. A center conductor (52) of the transmission line has an aperture (58) formed therein for receiving the device (50). The aperture (58) splits the center conductor into two parallel sections on opposite sides of the device. For a waveguide application, the center conductor is surrounded by a conductive ground surface (54), which is spaced apart from the center conductor with a dielectric material (56). One set of electrodes formed on the surface of the electro-optic device (50) is directly connected to the center conductor 52 and an electrode formed on the surface of the electro-optic device is directly connected to the conductive ground surface (54). The electrodes formed on the surface of the electro-optic device are formed on curved sections of the surface of the device to mate with correspondingly shaped electrodes on the conductor and ground surface to provide a uniform electric field across the electro-optic device. The center conductor includes a passage ( 60) formed therein for passage of optical signals to an electro-optic device.

Gruchalla, Michael E. (Albuquerque, NM)

1994-01-01T23:59:59.000Z

337

Electro-optic component mounting device  

DOE Patents (OSTI)

A technique is provided for integrally mounting a device such as an electro-optic device in a transmission line to avoid series resonant effects. A center conductor of the transmission line has an aperture formed therein for receiving the device. The aperture splits the center conductor into two parallel sections on opposite sides of the device. For a waveguide application, the center conductor is surrounded by a conductive ground surface which is spaced apart from the center conductor with a dielectric material. One set of electrodes formed on the surface of the electro-optic device is directly connected to the center conductor and an electrode formed on the surface of the electro-optic device is directly connected to the conductive ground surface. The electrodes formed on the surface of the electro-optic device are formed on curved sections of the surface of the device to mate with correspondingly shaped electrodes on the conductor and ground surface to provide a uniform electric field across the electro-optic device. The center conductor includes a passage formed therein for passage of optical signals to an electro-optic device. 10 figs.

Gruchalla, M.E.

1994-09-13T23:59:59.000Z

338

The characterisation of diesel nozzle flow using high speed imaging of elastic light scattering  

Science Journals Connector (OSTI)

Two identical, conventional six-hole, valve-covered orifice (VCO) diesel injectors have been modified in order to provide optical access to the region below the needle, and the nozzle-flow passages. This has been achieved through the removal of the metal tips, and their replacement with transparent acrylic tips of identical geometry. These two identical injectors were employed in order to offer comparability between the measurements. One of them had a dark, anodised inner surface at the base, while the other had a silvered inner surface at the base. Elastic scattering of incident white light from the internal cavitating flow inside the nozzle holes of the optically accessible diesel injector tips was captured on a high-speed electronic camera. The optical image data was obtained for three injector rail pressures ranging from 200 bar to 400 bar, and for five diesel fuels of varying density, viscosity, and distillation profile, in order to identify variations in cavitation flow behaviour inside the nozzle hole passages. A set of mean time-resolved diesel fuel flow images were obtained from 30 successive fuel injection pulses, for each operating condition, for each injector. The mean cavitation image occurring in the nozzle holes was converted to the mean proportion of nozzle hole area producing cavitation-induced optical scattering. The mean normalised area images were then analysed, and were able to demonstrate the anticipated inverse relationship between injected fuel mass and cavitation volume fraction (indicated by mean normalised area), and the effect of fuel viscosity and distillation profile on cavitation volume fraction (again indicated by mean normalised area).

R.D. Lockett; L. Liverani; D. Thaker; M. Jeshani; N.P. Tait

2013-01-01T23:59:59.000Z

339

Feasibility Study of Developing a Virtual Chilled Water Flow Meter at Air Handling Unit Level  

E-Print Network (OSTI)

In this paper, a virtual Air handling unit (AHU) level water flow meter is explored by using a control valve as a measurement device. The flow through the valve is indirectly calculated using differential pressure over both the valve and its...

Song, L.; Swamy, A.; Shim, G.

2011-01-01T23:59:59.000Z

340

Graphene: from functionalization to devices  

Science Journals Connector (OSTI)

The year 2014 marks the first decade of the rise of graphene. Graphene, a single atomic layer of carbon atoms in sp2 bonding configuration having a honeycomb structure, has now become a well-known and well-established material. Among some of its many outstanding fundamental properties, one can mention a very high carrier mobility, a very large spin diffusion length, unsurpassed mechanical properties as graphene is the strongest material ever measured and an exceptional thermal conductivity scaling more than one order of magnitude above that of copper. After the first years of the graphene rush, graphene growth is now well controlled using various methods like epitaxial growth on silicon carbide substrate, chemical vapour deposition (CVD) or plasma techniques on metal, insulator or semiconductor substrates. More applied research is now taking over the initial studies on graphene production. Indeed, graphene is a promising material for many advanced applications such as, but not limited to, electronic, spintronics, sensors, photonics, micro/nano-electromechanical (MEMS/NEMS) systems, super-capacitors or touch-screen technologies. In this context, this Special Issue of the Journal of Physics D: Applied Physics on graphene reviews some of the recent achievements, progress and prospects in this field. It includes a collection of seventeen invited articles covering the current status and future prospects of some selected topics of strong current interest. This Special Issue is organized in four sections. The first section is dedicated to graphene devices, and opens with an article by de Heer et al on an investigation of integrating graphene devices with silicon complementary metal–oxide–semiconductor (CMOS) technology. Then, a study by Svintsov et al proposes a lateral all-graphene tunnel field-effect transistor (FET) with a high on/off current switching ratio. Next, Tsukagoshi et al present how a band-gap opening occurs in a graphene bilayer by using a perpendicular electric field to operate logic gates. Plaçais et al then show the realization of graphene microwave nano-transistors that are especially suitable for fast charge detectors. Matsumoto et al describe next some interesting graphene-based biosensor applications, while the following article by Otsuji et al shows recent advances in plasmonics in terahertz device applications. This section ends with the Dollfus et al article dealing with non-linear effects in graphene devices investigated by simulation methods. The second section concerns the electronic and transport properties and includes four articles. The first one by Gurzadyan et al provides an investigation of graphene oxide in water by femtosecond pump–probe spectroscopy to study its transient absorption properties. Jouault et al then review the quantum Hall effect of self-organized graphene monolayers epitaxially grown on the C-face of SiC. Next, Petkovic et al report on the observation of edge magneto-plasmons in graphene. Finally, Roche and Valenzuela focus on the limits of conventional views in graphene spin transport and offer novel perspectives for further progress. The third section addresses graphene tailoring and functionalization as studied by Genorio and Znidarsic for graphene nanoribbons, or by atomic intercalation as shown by the two articles from Starke and Forti, and from Bisson et al. The last section is devoted to graphene growth and morphology. Ogino et al first describe a method to grow graphene on insulating substrates using polymer films as a carbon source. Then, Suemitsu et al show the recent progresses in epitaxial graphene formation on cubic silicon carbide thin films. Finally, Norimatsu and Kusunoki investigate the structural properties and morphology of epitaxial graphene grown on hexagonal silicon carbide substrates by using a high-resolution transmission electron microscope, their article closing this Special Issue .

Antonio Tejeda; Patrick G Soukiassian

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Volatile organic compound sensing devices  

DOE Patents (OSTI)

Apparatus employing vapochromic materials in the form of inorganic double complex salts which change color reversibly when exposed to volatile organic compound (VOC) vapors is adapted for VOC vapor detection, VOC aqueous matrix detection, and selective VOC vapor detection. The basic VOC vapochromic sensor is incorporated in various devices such as a ground probe sensor, a wristband sensor, a periodic sampling monitor, a soil/water penetrometer, an evaporative purge sensor, and various vacuum-based sensors which are particularly adapted for reversible/reusable detection, remote detection, continuous monitoring, or rapid screening of environmental remediation and waste management sites. The vapochromic sensor is used in combination with various fiber optic arrangements to provide a calibrated qualitative and/or quantitative indication of the presence of VOCs.

Lancaster, Gregory D. (Idaho Falls, ID); Moore, Glenn A. (Idaho Falls, ID); Stone, Mark L. (Idaho Falls, ID); Reagen, William K. (Stillwater, MN)

1995-01-01T23:59:59.000Z

342

Volatile organic compound sensing devices  

DOE Patents (OSTI)

Apparatus employing vapochromic materials in the form of inorganic double complex salts which change color reversibly when exposed to volatile organic compound (VOC) vapors is adapted for VOC vapor detection, VOC aqueous matrix detection, and selective VOC vapor detection. The basic VOC vapochromic sensor is incorporated in various devices such as a ground probe sensor, a wristband sensor, a periodic sampling monitor, a soil/water penetrometer, an evaporative purge sensor, and various vacuum-based sensors which are particularly adapted for reversible/reusable detection, remote detection, continuous monitoring, or rapid screening of environmental remediation and waste management sites. The vapochromic sensor is used in combination with various fiber optic arrangements to provide a calibrated qualitative and/or quantitative indication of the presence of VOCs. 15 figs.

Lancaster, G.D.; Moore, G.A.; Stone, M.L.; Reagen, W.K.

1995-08-29T23:59:59.000Z

343

Haptic device for telerobotic surgery  

DOE Patents (OSTI)

A haptic device for telerobotic surgery, including a base; a linkage system having first and second linkage members coupled to the base; a motor that provides a motor force; a transmission including first and second driving pulleys arranged such that their faces form an angle and their axes form a plane, first and second idler pulleys offset from the plane and arranged between the first and second driving pulleys such that their axes divide the angle between the first and second driving pulleys, and a cable that traverses the first and second driving pulleys and the set of idler pulleys and transfers the motor force to the linkage system; an end effector coupled to distal ends of the first and second linkage members and maneuverable relative to the base; and a controller that modulates the motor force to simulate a body part at a point portion of the end effector.

Salisbury, Curt; Salisbury, Jr., J. Kenneth

2014-12-30T23:59:59.000Z

344

Heating device for semiconductor wafers  

DOE Patents (OSTI)

An apparatus for heat treating semiconductor wafers is disclosed. The apparatus includes a heating device which contains an assembly of light energy sources for emitting light energy onto a wafer. In particular, the light energy sources are positioned such that many different radial heating zones are created on a wafer being heated. For instance, in one embodiment, the light energy sources form a spiral configuration. In an alternative embodiment, the light energy sources appear to be randomly dispersed with respect to each other so that no discernable pattern is present. In a third alternative embodiment of the present invention, the light energy sources form concentric rings. Tuning light sources are then placed in between the concentric rings of light.

Vosen, Steven R. (Berkeley, CA)

1999-01-01T23:59:59.000Z

345

Heating device for semiconductor wafers  

DOE Patents (OSTI)

An apparatus for heat treating semiconductor wafers is disclosed. The apparatus includes a heating device which contains an assembly of light energy sources for emitting light energy onto a wafer. In particular, the light energy sources are positioned such that many different radial heating zones are created on a wafer being heated. For instance, in one embodiment, the light energy sources form a spiral configuration. In an alternative embodiment, the light energy sources appear to be randomly dispersed with respect to each other so that no discernible pattern is present. In a third alternative embodiment of the present invention, the light energy sources form concentric rings. Tuning light sources are then placed in between the concentric rings of light. 4 figs.

Vosen, S.R.

1999-07-27T23:59:59.000Z

346

Seal device for ferromagnetic containers  

DOE Patents (OSTI)

A temporary seal or patch assembly prevents the escape of contents, e.g., fluids and the like, from within a container having a breach there through until the contents can be removed and/or a repair effected. A frame that supports a sealing bladder can be positioned over the breach and the frame is then attached to the container surface, which must be of a ferromagnet material, by using switchable permanent magnets. The permanent magnets are designed to have a first condition that is not attracted to the ferromagnetic surface and a second conditions whereby the magnets are attracted to the surface with sufficient force to support the seal assembly on the surface. Latching devices may be attached to the frame and engage the container surface with hardened pins to prevent the lateral movement of the seal assembly along the container surface from external forces such as fluid drag or gravity. 10 figs.

Meyer, R.E.; Jason, A.J.

1994-10-18T23:59:59.000Z

347

Seal device for ferromagnetic containers  

DOE Patents (OSTI)

A temporary seal or patch assembly prevents the escape of contents, e.g., fluids and the like, from within a container having a breach therethrough until the contents can be removed and/or a repair effected. A frame that supports a sealing bladder can be positioned over the breach and the frame is then attached to the container surface, which must be of a ferromagnet material, by using switchable permanent magnets. The permanent magnets are designed to have a first condition that is not attracted to the ferromagnetic surface and a second conditions whereby the magnets are attracted to the surface with sufficient force to support the seal assembly on the surface. Latching devices may be attached to the frame and engage the container surface with hardened pins to prevent the lateral movement of the seal assembly along the container surface from external forces such as fluid drag or gravity.

Meyer, Ross E. (Los Alamos, NM); Jason, Andrew J. (Los Alamos, NM)

1994-01-01T23:59:59.000Z

348

Cryogenic vacuumm RF feedthrough device  

DOE Patents (OSTI)

A cryogenic vacuum rf feedthrough device comprising: 1) a probe for insertion into a particle beam; 2) a coaxial cable comprising an inner conductor and an outer conductor, a dielectric/insulating layer surrounding the inner conductor, the latter being connected to the probe for the transmission of higher mode rf energy from the probe; and 3) a high thermal conductivity stub attached to the coaxial dielectric about and in thermal contact with the inner conductor which high thermal conductivity stub transmits heat generated in the vicinity of the probe efficiently and radially from the area of the probe and inner conductor all while maintaining useful rf transmission line characteristics between the inner and outer coaxial conductors.

Wu, Genfa (Yorktown, VA); Phillips, Harry Lawrence (Hayes, VA)

2008-12-30T23:59:59.000Z

349

Plastic Flow in Glass  

Science Journals Connector (OSTI)

...1964 research-article Plastic Flow in Glass D. M. Marsh The classical brittle fracture...account for the mechanical properties of glasses, but the widespread evidence of plastic flow in all glass fracture phenomena even at room temperature...

1964-01-01T23:59:59.000Z

350

Evaluation of flow capture techniques for measuring HVAC grilleairflows  

SciTech Connect

This paper discusses the accuracy of commercially available flow hoods for residential applications. Results of laboratory and field tests indicate these hoods can be inadequate to measure airflows in residential systems, and there can be large measurement discrepancies between different flow hoods. The errors are due to poor calibrations, sensitivity of the hoods to grille airflow non-uniformities, and flow changes from added flow resistance. It is possible to obtain reasonable results using some flow hoods if the field tests are carefully done, the grilles are appropriate, and grille location does not restrict flow hood placement. We also evaluated several simple flow capture techniques for measuring grille airflows that could be adopted by the HVAC industry and homeowners as simple diagnostics. These simple techniques can be as accurate as commercially available devices. Our test results also show that current calibration procedures for flow hoods do not account for field application problems. As a result, agencies such as ASHRAE or ASTM need to develop a new standard for flow hood calibration, along with a new measurement standard to address field use of flow capture techniques.

Walker, Iain S.; Wray, Craig P.

2002-11-01T23:59:59.000Z

351

Ultrasonic flow metering system  

DOE Patents (OSTI)

A system for determining the density, flow velocity, and mass flow of a fluid comprising at least one sing-around circuit that determines the velocity of a signal in the fluid and that is correlatable to a database for the fluid. A system for determining flow velocity uses two of the inventive circuits with directional transmitters and receivers, one of which is set at an angle to the direction of flow that is different from the others.

Gomm, Tyler J. (Meridian, ID); Kraft, Nancy C. (Idaho Falls, ID); Mauseth, Jason A. (Pocatello, ID); Phelps, Larry D. (Pocatello, ID); Taylor, Steven C. (Idaho Falls, ID)

2002-01-01T23:59:59.000Z

352

Emission Zone Control in Blue Organic Electrophosphorescent Devices...  

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

Electrophosphorescent Devices Through Chemical Modification of Host Materials . Emission Zone Control in Blue Organic Electrophosphorescent Devices Through Chemical...

353

Elbow mass flow meter  

DOE Patents (OSTI)

Elbow mass flow meter. The present invention includes a combination of an elbow pressure drop generator and a shunt-type mass flow sensor for providing an output which gives the mass flow rate of a gas that is nearly independent of the density of the gas. For air, the output is also approximately independent of humidity.

McFarland, Andrew R. (College Station, TX); Rodgers, John C. (Santa Fe, NM); Ortiz, Carlos A. (Bryan, TX); Nelson, David C. (Santa Fe, NM)

1994-01-01T23:59:59.000Z

354

Microfabricated fuel heating value monitoring device  

DOE Patents (OSTI)

A microfabricated fuel heating value monitoring device comprises a microfabricated gas chromatography column in combination with a catalytic microcalorimeter. The microcalorimeter can comprise a reference thermal conductivity sensor to provide diagnostics and surety. Using microfabrication techniques, the device can be manufactured in production quantities at a low per-unit cost. The microfabricated fuel heating value monitoring device enables continuous calorimetric determination of the heating value of natural gas with a 1 minute analysis time and 1.5 minute cycle time using air as a carrier gas. This device has applications in remote natural gas mining stations, pipeline switching and metering stations, turbine generators, and other industrial user sites. For gas pipelines, the device can improve gas quality during transfer and blending, and provide accurate financial accounting. For industrial end users, the device can provide continuous feedback of physical gas properties to improve combustion efficiency during use.

Robinson, Alex L. (Albuquerque, NM); Manginell, Ronald P. (Albuquerque, NM); Moorman, Matthew W. (Albuquerque, NM)

2010-05-04T23:59:59.000Z

355

Healthcare mobile information flow  

Science Journals Connector (OSTI)

There are a variety of mobile technologies currently available that have increased the potential for healthcare practitioners to access clinical decision support resources delivered over an array of mobile devices as a component of clinical workflow. ... Keywords: Clinical Decision Support, Ehrs, Healthcare, Healthcare Mobile Technology, Ipads In Healthcare, Market Drivers, Mobile Devices, Smartphones In Healthcare

Victor Camlek

2011-01-01T23:59:59.000Z

356

Infections of Cardiovascular Implantable Electronic Devices  

Science Journals Connector (OSTI)

...-culture results are negative in those with previously positive culture results and until infection at the pocket site has been controlled. In addition to removal of the device, antimicrobial therapy is needed. Owing to the predominance of staphylococcal species as pathogens and the frequency of oxacillin... As cardiac implantable electronic devices become increasingly common, infections (generally caused by staphylococci) are also more frequent. In addition to antibiotic therapy, complete removal of the device is required for cure.

Baddour L.M.Cha Y.-M.Wilson W.R.

2012-08-30T23:59:59.000Z

357

Stable blue phosphorescent organic light emitting devices  

DOE Patents (OSTI)

Novel combination of materials and device architectures for organic light emitting devices is provided. An organic light emitting device, is provided, having an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer includes a host and a phosphorescent emissive dopant having a peak emissive wavelength less than 500 nm, and a radiative phosphorescent lifetime less than 1 microsecond. Preferably, the phosphorescent emissive dopant includes a ligand having a carbazole group.

Forrest, Stephen R.; Thompson, Mark; Giebink, Noel

2014-08-26T23:59:59.000Z

358

Solids flow rate measurement in dense slurries  

SciTech Connect

Accurate and rapid flow rate measurement of solids in dense slurries remains an unsolved technical problem, with important industrial applications in chemical processing plants and long-distance solids conveyance. In a hostile two-phase medium, such a measurement calls for two independent parameter determinations, both by non-intrusive means. Typically, dense slurries tend to flow in laminar, non-Newtonian mode, eliminating most conventional means that usually rely on calibration (which becomes more difficult and costly for high pressure and temperature media). These issues are reviewed, and specific solutions are recommended in this report. Detailed calculations that lead to improved measuring device designs are presented for both bulk density and average velocity measurements. Cross-correlation, chosen here for the latter task, has long been too inaccurate for practical applications. The cause and the cure of this deficiency are discussed using theory-supported modeling. Fluid Mechanics are used to develop the velocity profiles of laminar non-Newtonian flow in a rectangular duct. This geometry uniquely allows the design of highly accurate `capacitive` devices and also lends itself to gamma transmission densitometry on an absolute basis. An absolute readout, though of less accuracy, is also available from a capacitive densitometer and a pair of capacitive sensors yields signals suitable for cross-correlation velocity measurement.

Porges, K.G.; Doss, E.D.

1993-09-01T23:59:59.000Z

359

Ionization-Based Multi-directional Flow Sensor  

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

Ionization-Based Multi-directional Flow Sensor Ionization-Based Multi-directional Flow Sensor Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking licensing partners interested in implementing United States Patent Number 7,523,673 entitled "Ionization Based Multi-directional Flow Sensor." Disclosed in this patent is NETL's sensor system and process for multi- directional, real-time monitoring of the flow direction and velocity of a gas stream, with minimal pressure drop, such as air flow in a hybrid power generation system. The sensor comprises an ion source accom- panied by a multidirectional ion collection device near the ion source. Possible applications include power generation and weather monitoring. Overview To optimize the performance of certain industrial processes or apparatus,

360

Mobile Monolith Polymer Elements For Flow Control In Microfluidic Systems  

DOE Patents (OSTI)

A cast-in-place and lithographically shaped mobile, monolithic polymer element for fluid flow control in microfluidic devices and method of manufacture. Microfluid flow control devices, or microvalves that provide for control of fluid or ionic current flow can be made incorporating a cast-in-place, mobile monolithic polymer element, disposed within a microchannel, and driven by fluid pressure (either liquid or gas) against a retaining or sealing surface. The polymer elements are made by the application of lithographic methods to monomer mixtures formulated in such a way that the polymer will not bond to microchannel walls. The polymer elements can seal against pressures greater than 5000 psi, and have a response time on the order of milliseconds. By the use of energetic radiation it is possible to depolymerize selected regions of the polymer element to form shapes that cannot be produced by conventional lithographic patterning and would be impossible to machine.

Hasselbrink, Jr., Ernest F. (Saline, MI); Rehm, Jason E. (Alameda, CA); Shepodd, Timothy J. (Livermore, CA); Kirby, Brian J. (San Francisco, CA)

2006-01-24T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

NREL: Measurements and Characterization - Device Performance Measurement  

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

Device Performance Measurement Device Performance Measurement The National Renewable Energy Laboratory is the premier U.S. Department of Energy (DOE) research laboratory for testing performance of commercial, developmental, and research photovoltaic (PV) devices. Our Device Performance group is one of only two laboratories in the world to hold an International Organization for Standardization (ISO) 17025 accreditation for primary reference cell and secondary module calibration, in addition to accreditation for secondary reference cell calibration under American Society for Testing Materials (ASTM), and International Electrotechnical Commission (IEC) standards. One of only four laboratories in the world certified in accordance with the IEC standard for calibrating terrestrial primary reference PV cells, we

362

Smart prevention device for foot infection  

Science Journals Connector (OSTI)

The device "Power Insoles" is an electronic shoe insole that ... throughout the day, and prevent apparition of foot ulcers by informing the patient through biofeedback...

M Rocklinger; P Vacherand; F Brönnimann; A Mathieu; A Stéphane; Z Pataky

2011-06-01T23:59:59.000Z

363

Organic light emitting devices for illumination  

DOE Patents (OSTI)

An organic light emitting device is provided. The device has a plurality of regions, each region having an organic emissive layer adapted to emit a different spectrum of light. The regions in combination emit light suitable for illumination purposes. The area of each region may be selected such that the device is more efficient that an otherwise equivalent device having regions of equal size. The regions may have an aspect ratio of at least about four. All parts of any given region may be driven at the same current.

Hack, Michael (Lambertville, NJ); Lu, Min-Hao Michael (Lawrenceville, NJ); Weaver, Michael S. (Princeton, NJ)

2010-02-16T23:59:59.000Z

364

Tunable Graphene Electronic Devices - Energy Innovation Portal  

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

Advanced Materials Advanced Materials Find More Like This Return to Search Tunable Graphene Electronic Devices Lawrence Berkeley National Laboratory Contact LBL About This...

365

Low temperature proton conducting oxide devices  

DOE Patents (OSTI)

A device for conducting protons at a temperature below 550.degree. C. includes a LAMOX ceramic body characterized by an alpha crystalline structure.

Armstrong, Timothy R. (Clinton, TN); Payzant, Edward A. (Oak Ridge, TN); Speakman, Scott A. (Oak Ridge, TN); Greenblatt, Martha (Highland Park, NJ)

2008-08-19T23:59:59.000Z

366

Silicon Materials and Devices (Fact Sheet)  

SciTech Connect

This National Center for Photovoltaics sheet describes the capabilities of its silicon materials and devices research. The scope and core competencies and capabilities are discussed.

Not Available

2013-06-01T23:59:59.000Z

367

Silicon Materials and Devices (Fact Sheet)  

SciTech Connect

Capabilities fact sheet for the National Center for Photovoltaics: Silicon Materials and Devices that includes scope, core competencies and capabilities, and contact/web information.

Not Available

2011-06-01T23:59:59.000Z

368

Application of microfluidic device to malaria diagnosis .  

E-Print Network (OSTI)

??Of many diagnostic devices and technology developed, microfluidics could be superior in terms of ease of fabrication, cost, portability, speed and sensitivity. The application of… (more)

Zhang, Rou

2007-01-01T23:59:59.000Z

369

Novel Nanoparticle Tracking Device | The Ames Laboratory  

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

Novel Nanoparticle Tracking Device A new technique simultaneously illuminates the location, orientation and rotation in 3D of individual gold nanorods. Gold nanorods have been used...

370

Environmental Effects on Power Electronic Devices | Department...  

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

Publications Environmental Effects on Power Electronic Devices Direct-Cooled Power Electronic Substrate ORNL: Low-Cost Direct Bonded Aluminum (DBA) Substrates (Agreement ID:23278)...

371

Environmental Effects on Power Electronic Devices | Department...  

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

Publications Environmental Effects on Power Electronic Devices ORNL: Low-Cost Direct Bonded Aluminum (DBA) Substrates (Agreement ID:23278) Direct-Cooled Power Electronic Substrate...

372

RF Micro Devices | Open Energy Information  

Open Energy Info (EERE)

for Others) for this property. Partnering Center within NREL National Center for Photovoltaics Partnership Year 2009 RF Micro Devices is a company located in Greensboro, NC....

373

Apparatus for passive removal of subsurface contaminants and volume flow measurement  

DOE Patents (OSTI)

A system for improving the Baroball valve and a method for retrofitting an existing Baroball valve. This invention improves upon the Baroball valve by reshaping the interior chamber of the valve to form a flow meter measuring chamber. The Baroball valve sealing mechanism acts as a rotameter bob for determining volume flow rate through the Baroball valve. A method for retrofitting a Baroball valve includes providing static pressure ports and connecting a measuring device, to these ports, for measuring the pressure differential between the Baroball chamber and the well. A standard curve of nominal device measurements allows the volume flow rate to be determined through the retrofitted Baroball valve.

Jackson, Dennis G. (Augusta, GA); Rossabi, Joseph (Aiken, SC); Riha, Brian D. (Augusta, GA)

2002-01-01T23:59:59.000Z

374

Idling control device for internal combustion engine with turbocharger  

SciTech Connect

An idling control device is described for an internal combustion engine with a turbocharger, comprising: an air intake pipe having an inlet at an upstream end thereof adapted to accept air which is to be supplied through the air intake pipe to the internal combustion engine a turbocharger having a housing incorporated in the air intake pipe between the inlet and the outlet, a throttle valve incorporated in the air intake pipe between the turbocharger and the outlet, a surge tank incorporated in the air intake pipe between the throttle valve and the outlet; a bypass air passage means provided in parallel with the air intake pipe between upstream of the turbocharger and downstream of the throttle valve; a flow-control valve incorporated in the bypass air passage means; an actuator operatively associated with the flow-control valve, a computer operatively associated with the actuator and arranged to receive signals relating to operating conditions of the engine; a check valve incorporated in the bypass air passage means downstream of the flow-control valve.

Ando, H.; Kondo, T.

1986-09-23T23:59:59.000Z

375

Drag-induced Breakup Mechanism for Droplet Generation in Dripping Within Flow Focusing Microfluidics  

Science Journals Connector (OSTI)

Abstract Based on viscous drag-induced breakup mechanism, a simple model was proposed to predict the dripping droplet size as a function of controllable parameters in flow focusing micro devices. The size of thread before breakup was also investigated through laminar flow theory. Experiments and numerical simulations by VOF are carried out simultaneously to validate the theoretical analysis, showing that droplet size decreases rapidly with the increase of the flow rate ratio and capillary number.

Ping Wu; Zhaofeng Luo; Zhifeng Liu; Zida Li; Chi Chen; Lili Feng; Liqun He

2014-01-01T23:59:59.000Z

376

Plasma engineering models of tandem mirror devices with high-field test-cell inserts  

SciTech Connect

Plasma physics and engineering models of tandem mirror devices operated with a high-field technology test-cell insert in the central cell, which have been incorporated recently in the TMRBAR tandem mirror reactor physics code, are described. The models include particle and energy balance in the test-cell region as well as the interactions between the test-cell particles and those flowing through the entire device. The code calculations yield consistent operating parameters for the test-cell, central cell, and end cell systems. A benchmark case for the MFTF-..cap alpha..+T configuration is presented which shows good agreement between the code results and previous calculations.

Fenstermacher, M.E.; Campbell, R.B.

1985-04-03T23:59:59.000Z

377

A New Approach to Computing Max Flows using Electrical Flows  

E-Print Network (OSTI)

A New Approach to Computing Max Flows using Electrical Flows Yin Tat Lee (MIT) Satish Rao (UC-Kelner-Madry-Spielman-Teng'11]: approximate flow in time Uses electrical flows. 7 #12;Electrical Flows 3 1 S t 8 #12;Electrical Flows Identify Graph with Resistor Network R(e)=1/w(e) 1/3 S t 1 9 #12;Electrical Flows Electrical flow

Rajamani, Sriram K.

378

Low flow fume hood  

DOE Patents (OSTI)

A fume hood is provided having an adequate level of safety while reducing the amount of air exhausted from the hood. A displacement flow fume hood works on the principal of a displacement flow which displaces the volume currently present in the hood using a push-pull system. The displacement flow includes a plurality of air supplies which provide fresh air, preferably having laminar flow, to the fume hood. The displacement flow fume hood also includes an air exhaust which pulls air from the work chamber in a minimally turbulent manner. As the displacement flow produces a substantially consistent and minimally turbulent flow in the hood, inconsistent flow patterns associated with contaminant escape from the hood are minimized. The displacement flow fume hood largely reduces the need to exhaust large amounts of air from the hood. It has been shown that exhaust air flow reductions of up to 70% are possible without a decrease in the hood's containment performance. The fume hood also includes a number of structural adaptations which facilitate consistent and minimally turbulent flow within a fume hood.

Bell, Geoffrey C. (Pleasant Hill, CA); Feustel, Helmut E. (Albany, CA); Dickerhoff, Darryl J. (Berkeley, CA)

2002-01-01T23:59:59.000Z

379

Adjustable flow rate controller for polymer solutions  

DOE Patents (OSTI)

An adjustable device for controlling the flow rate of polymer solutions which results in only little shearing of the polymer molecules, said device comprising an inlet manifold, an outlet manifold, a plurality of tubes capable of providing communication between said inlet and outlet manifolds, said tubes each having an internal diameter that is smaller than that of the inlet manifold and large enough to insure that viscosity of the polymer solution passing through each said tube will not be reduced more than about 25 percent, and a valve associated with each tube, said valve being capable of opening or closing communication in that tube between the inlet and outlet manifolds, each said valve when fully open having a diameter that is substantially at least as great as that of the tube with which it is associated.

Jackson, Kenneth M. (Bartlesville, OK)

1981-01-01T23:59:59.000Z

380

FLOW CONDITIONING DESIGN IN TURBULENT  

E-Print Network (OSTI)

for HYLIFE-II · Measure loss coefficient across the flow conditioner / nozzle assembly for different flow conditioner configurations #12;5 Flow Loop A Pump H 400 gal tank B Bypass line I Butterfly valve C Flow meter

Note: This page contains sample records for the topic "flow orifice devices" 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

Method and system for reducing device performance degradation of organic devices  

DOE Patents (OSTI)

Methods and systems for reducing the deleterious effects of gate bias stress on the drain current of an organic device, such as an organic thin film transistor, are provided. In a particular aspect, the organic layer of an organic device is illuminated with light having characteristics selected to reduce the gate bias voltage effects on the drain current of the organic device. For instance, the wavelength and intensity of the light are selected to provide a desired recovery of drain current of the organic device. If the characteristics of the light are appropriately matched to the organic device, recovery of the deleterious effects caused by gate bias voltage stress effects on the drain current of the organic device can be achieved. In a particular aspect, the organic device is selectively illuminated with light to operate the organic device in multiple modes of operation.

Teague, Lucile C.

2014-09-02T23:59:59.000Z

382

Development of Next Generation Multiphase Pipe Flow Prediction Tools  

SciTech Connect

The developments of fields in deep waters (5000 ft and more) is a common occurrence. It is inevitable that production systems will operate under multiphase flow conditions (simultaneous flow of gas-oil-and water possibly along with sand, hydrates, and waxes). Multiphase flow prediction tools are essential for every phase of the hydrocarbon recovery from design to operation. The recovery from deep-waters poses special challenges and requires accurate multiphase flow predictive tools for several applications including the design and diagnostics of the production systems, separation of phases in horizontal wells, and multiphase separation (topside, seabed or bottom-hole). It is very crucial to any multiphase separation technique that is employed either at topside, seabed or bottom-hole to know inlet conditions such as the flow rates, flow patterns, and volume fractions of gas, oil and water coming into the separation devices. The overall objective was to develop a unified model for gas-oil-water three-phase flow in wells, flow lines, and pipelines to predict the flow characteristics such as flow patterns, phase distributions, and pressure gradient encountered during petroleum production at different flow conditions (pipe diameter and inclination, fluid properties and flow rates). The project was conducted in two periods. In Period 1 (four years), gas-oil-water flow in pipes were investigated to understand the fundamental physical mechanisms describing the interaction between the gas-oil-water phases under flowing conditions, and a unified model was developed utilizing a novel modeling approach. A gas-oil-water pipe flow database including field and laboratory data was formed in Period 2 (one year). The database was utilized in model performance demonstration. Period 1 primarily consisted of the development of a unified model and software to predict the gas-oil-water flow, and experimental studies of the gas-oil-water project, including flow behavior description and closure relation development for different flow conditions. Modeling studies were performed in two parts, Technology Assessment and Model Development and Enhancement. The results of the Technology assessment study indicated that the performance of the current state of the art two-phase flow models was poor especially for three-phase pipeline flow when compared with the existing data. As part of the model development and enhancement study, a new unified model for gas-oil-water three-phase pipe flow was developed. The new model is based on the dynamics of slug flow, which shares transition boundaries with all the other flow patterns. The equations of slug flow are used not only to calculate the slug characteristics, but also to predict transitions from slug flow to other flow patterns. An experimental program including three-phase gas-oil-water horizontal flow and two-phase horizontal and inclined oil-water flow testing was conducted utilizing a Tulsa University Fluid Flow Projects Three-phase Flow Facility. The experimental results were incorporated into the unified model as they became available, and model results were used to better focus and tailor the experimental study. Finally, during the Period 2, a new three-phase databank has been developed using the data generated during this project and additional data available in the literature. The unified model to predict the gas-oil-water three phase flow characteristics was tested by comparing the prediction results with the data. The results showed good agreements.

Tulsa Fluid Flow

2008-08-31T23:59:59.000Z

383

Portable basketball rim testing device  

DOE Patents (OSTI)

A portable basketball rim rebound testing device 10 is illustrated in two preferred embodiments for testing the rebound or energy absorption characteristics of a basketball rim 12 and its accompanying support to determine likely rebound or energy absorption charcteristics of the system. The apparatus 10 includes a depending frame 28 having a C-clamp 36 for releasably rigidly connecting the frame to the basketball rim 12. A glide weight 60 is mounted on a guide rod 52 permitting the weight 60 to be dropped against a calibrated spring 56 held on an abutment surface on the rod to generate for deflecting the basketball rim and then rebounding the weight upwardly. A photosensor 66 is mounted on the depending frame 28 to sense passage of reflective surfaces 75 on the weight to thereby obtain sufficient data to enable a processing means 26 to calculate the rebound velocity and relate it to an energy absorption percentage rate of the rim system 12. A readout is provided to display the energy absorption percentage.

Abbott, W. Bruce (610 Clover St., Cheney, WA 99004); Davis, Karl C. (Box 722, Richland, WA 99352)

1993-01-01T23:59:59.000Z

384

Josephson-junction logic device  

SciTech Connect

A Josephson-junction logic device having inductances and forming and AND circuit is described comprising: at least two superconductive loops, each having at least two Josephson-junction elements and a loop inductance connected between each of at least two Josephson-junction elements; at least two logic input signal lines, operatively connected to receive input currents, for supplying logic input signals; a bias line, operatively connected to at least two super conductive loops, for supplying a bias current to at least two superconductive loops, the bias current satisfying the condition vertical bar I/sub ml/ vertical bar > vertical bar I/sub mo/ vertical bar, where I/sub ml/ is a first threshold current, for switching the AND circuit, determined when at least two logic input signal lines receive different magnitude input currents and where I/sub mo/ is a second threshold current for switching the AND circuit, determined when at least two logic input signal lines receive the same magnitude input currents; and output terminals, operatively connected to one of at least two Josephson-junction elements, for outputting a logic output signal as a result of a logic operation performed on the logic input signals, whereby an operating margin of the AND circuit is expanded.

Suzuki, H.

1987-12-01T23:59:59.000Z

385

Control device for vehicle speed  

SciTech Connect

This patent describes a control device for vehicle speed comprising: a throttle driving means operatively coupled to a throttle valve of a vehicle; a set switch means for commanding memorization of the vehicle speed; a resume switch means for commanding read of the vehicle speed; a vehicle speed detecting means for generating a signal in accordance with the vehicle speed; a vehicle speed memory; an electronical control means for memorizing in the vehicle speed memory vehicle speed information corresponding to the signal obtained from the vehicle speed detecting means in response to actuation of the set switch means. The control means is also for reading out the content of the vehicle speed memory in response to actuation of the resume switch means to control the throttle driving means in accordance with the read-out content; a power supply means for supplying power to the electronical control means; and a power supply control switch means for controlling supply of power to the electronical control means in response to the state of at least one of the set switch means and the resume switch means and the state of the electronical control means. The improvement described here comprises the electronical control means sets the power supply control switch means into such a state that supply of power to the electronical control means is turned OFF, when vehicle speed information is not memorized in the vehicle speed memory.

Kawata, S.; Hyodo, H.

1987-03-03T23:59:59.000Z

386

A lattice Boltzmann algorithm for electro-osmotic flows in microfluidic Zhaoli Guo, T. S. Zhao,a  

E-Print Network (OSTI)

A lattice Boltzmann algorithm for electro-osmotic flows in microfluidic devices Zhaoli Guo, T. S emergence,6­8 and recently its applications to microfluidics have attracted much atten- tion from

Zhao, Tianshou

387

Application of a ratiometric laser induced fluorescence (LIF) thermometry for micro-scale temperature measurement for natural convection flows  

E-Print Network (OSTI)

A ratiometric laser induced fluorescence (LIF) thermometry applied to micro-scale temperature measurement for natural convection flows. To eliminate incident light non-uniformity and imperfection of recording device, two fluorescence dyes are used...

Lee, Heon Ju

2004-11-15T23:59:59.000Z

388

Methods for dispensing mercury into devices  

DOE Patents (OSTI)

A process for dispensing mercury into devices which requires mercury. Mercury is first electrolytically separated from either HgO or Hg.sub.2 Cl.sub.2 and plated onto a cathode wire. The cathode wire is then placed into a device requiring mercury.

Grossman, Mark W. (Belmont, MA); George, William A. (Rockport, MA)

1987-04-28T23:59:59.000Z

389

Methods for dispensing mercury into devices  

DOE Patents (OSTI)

A process is described for dispensing mercury into devices which requires mercury. Mercury is first electrolytically separated from either HgO or Hg[sub 2]Cl[sub 2] and plated onto a cathode wire. The cathode wire is then placed into a device requiring mercury. 2 figs.

Grossman, M.W.; George, W.A.

1987-04-28T23:59:59.000Z

390

Chapter 13 -Firearms, Weapons, Destructive Devices  

E-Print Network (OSTI)

53 Chapter 13 - Firearms, Weapons, Destructive Devices The Oregon Administrative Rules contain OAR Definitions (1) "Firearm" means a weapon or device, by whatever name known, which is designed to expel chemical action, and which is readily capable for use as a weapon. (2) "Weapon" means any knife having

391

Protection of microelectronic devices during packaging  

DOE Patents (OSTI)

The present invention relates to a method of protecting a microelectronic device during device packaging, including the steps of applying a water-insoluble, protective coating to a sensitive area on the device; performing at least one packaging step; and then substantially removing the protective coating, preferably by dry plasma etching. The sensitive area can include a released MEMS element. The microelectronic device can be disposed on a wafer. The protective coating can be a vacuum vapor-deposited parylene polymer, silicon nitride, metal (e.g. aluminum or tungsten), a vapor deposited organic material, cynoacrylate, a carbon film, a self-assembled monolayered material, perfluoropolyether, hexamethyldisilazane, or perfluorodecanoic carboxylic acid, silicon dioxide, silicate glass, or combinations thereof. The present invention also relates to a method of packaging a microelectronic device, including: providing a microelectronic device having a sensitive area; applying a water-insoluble, protective coating to the sensitive area; providing a package; attaching the device to the package; electrically interconnecting the device to the package; and substantially removing the protective coating from the sensitive area.

Peterson, Kenneth A. (Albuquerque, NM); Conley, William R. (Tijeras, NM)

2002-01-01T23:59:59.000Z

392

The history of nuclear weapon safety devices  

SciTech Connect

The paper presents the history of safety devices used in nuclear weapons from the early days of separables to the latest advancements in MicroElectroMechanical Systems (MEMS). Although the paper focuses on devices, the principles of Enhanced Nuclear Detonation Safety implementation will also be presented.

Plummer, D.W.; Greenwood, W.H.

1998-06-01T23:59:59.000Z

393

Discrete control of resonant wave energy devices  

Science Journals Connector (OSTI)

...Society 28 January 2012 research-article Articles 1006...peaks and troughs of wave energy: the dreams and the...control of deep water wave energy devices using an active...www.iwwwfb.org/Abstracts/iwwwfb20/iwwwfb20...latching control of a wave energy device in regular and...

2012-01-01T23:59:59.000Z

394

Multicolored Electrochromism in Polymers: Structures and Devices  

E-Print Network (OSTI)

Multicolored Electrochromism in Polymers: Structures and Devices Avni A. Argun, Pierre-Henri Aubert May 12, 2004 A review of electrochromic (EC) polymers and their applications in absorption/transmission, reflective, and patterned electrochromic devices (ECDs) is presented. Fundamental properties of EC materials

Tanner, David B.

395

Development of Microfluidic Devices Incorporating Electrochemical Detection  

E-Print Network (OSTI)

Development of Microfluidic Devices Incorporating Electrochemical Detection Anne Regel Submitted to the Department of Chemistry and the Graduate School of the University of Kansas in partial fulfillment of the requirements for the degree... _______________________________ Karen Nordheden Dissertation Defense: August 21, 2013 ii The Dissertation Committee for Anne Regel certifies that this is the approved version of the following dissertation: Development of Microfluidic Devices Incorporating...

Regel, Anne

2014-05-31T23:59:59.000Z

396

Enhanced Thin Film Organic Photovoltaic Devices  

A novel structure design for thin film organic photovoltaic (OPV) devices provides a system for increasing the optical absorption in the active layer. The waveguided structure permits reduction of the active layer thickness, resulting in enhanced charge collection and extraction, leading to improved power conversion efficiency compared to standard OPV devices....

2014-01-10T23:59:59.000Z

397

Chapter 9: Photovoltaic DevicesChapter 9: Photovoltaic Devices Solar energy spectrumSolar energy spectrum  

E-Print Network (OSTI)

Chapter 9: Photovoltaic DevicesChapter 9: Photovoltaic Devices Solar energy spectrumSolar energy Solar Energy? · Clean · Nearly unlimited PHYS5320 Chapter Nine 3 #12;S l ll l t PHYS5320 Chapter Nine 4 Solar cell plant #12;Cars powered by photovoltaic devices PHYS5320 Chapter Nine 5 #12;Solar Energy

Wang, Jianfang

398

Energy Conversion DevicesEnergy Conversion Devices Fuel Cell Electrocatalyst Development Program  

E-Print Network (OSTI)

for several groups of electrocatalysts ECD PEMFC Catalyst Development Evaluation programs exist for severalEnergy Conversion Devices PEMFC Electrocatalyst Development Program Contact information: Dr. Peter Faguy pfaguyEnergy Conversion DevicesEnergy Conversion Devices Fuel Cell Electrocatalyst Development Program

399

Development of Next Generation Multiphase Pipe Flow Prediction Tools  

SciTech Connect

The developments of oil and gas fields in deep waters (5000 ft and more) will become more common in the future. It is inevitable that production systems will operate under multiphase flow conditions (simultaneous flow of gas, oil and water possibly along with sand, hydrates, and waxes). Multiphase flow prediction tools are essential for every phase of hydrocarbon recovery from design to operation. Recovery from deep-waters poses special challenges and requires accurate multiphase flow predictive tools for several applications, including the design and diagnostics of the production systems, separation of phases in horizontal wells, and multiphase separation (topside, seabed or bottom-hole). It is crucial for any multiphase separation technique, either at topside, seabed or bottom-hole, to know inlet conditions such as flow rates, flow patterns, and volume fractions of gas, oil and water coming into the separation devices. Therefore, the development of a new generation of multiphase flow predictive tools is needed. The overall objective of the proposed study is to develop a unified model for gas-oil-water three-phase flow in wells, flow lines, and pipelines to predict flow characteristics such as flow patterns, phase distributions, and pressure gradient encountered during petroleum production at different flow conditions (pipe diameter and inclination, fluid properties and flow rates). In the current multiphase modeling approach, flow pattern and flow behavior (pressure gradient and phase fractions) prediction modeling are separated. Thus, different models based on different physics are employed, causing inaccuracies and discontinuities. Moreover, oil and water are treated as a pseudo single phase, ignoring the distinct characteristics of both oil and water, and often resulting in inaccurate design that leads to operational problems. In this study, a new model is being developed through a theoretical and experimental study employing a revolutionary approach. The basic continuity and momentum equations is established for each phase, and used for both flow pattern and flow behavior predictions. The required closure relationships are being developed, and will be verified with experimental results. Gas-oil-water experimental studies are currently underway for the horizontal pipes. Industry-driven consortia provide a cost-efficient vehicle for developing, transferring, and deploying new technologies into the private sector. The Tulsa University Fluid Flow Projects (TUFFP) is one of the earliest cooperative industry-university research consortia. TUFFP's mission is to conduct basic and applied multiphase flow research addressing the current and future needs of hydrocarbon production and transportation. TUFFP participants and The University of Tulsa are supporting this study through 55% cost sharing.

Cem Sarica; Holden Zhang

2006-05-31T23:59:59.000Z

400

Enhancement of automotive exhaust heat recovery by thermoelectric devices  

SciTech Connect

In an effort to improve automobile fuel economy, an experimental study is undertaken to explore practical aspects of implementing thermoelectric devices for exhaust gas energy recovery. A highly instrumented apparatus consisting of a hot (exhaust gas) and a cold (coolant liquid) side rectangular ducts enclosing the thermoelectric elements has been built. Measurements of thermoelectric voltage output and flow and surface temperatures were acquired and analyzed to investigate the power generation and heat transfer properties of the apparatus. Effects of inserting aluminum wool packing material inside the hot side duct on augmentation of heat transfer from the gas stream to duct walls were studied. Data were collected for both the unpacked and packed cases to allow for detection of packing influence on flow and surface temperatures. Effects of gas and coolant inlet temperatures as well as gas flow rate on the thermoelectric power output were examined. The results indicate that thermoelectric power production is increased at higher gas inlet temperature or flow rate. However, thermoelectric power generation decreases with a higher coolant temperature as a consequence of the reduced hot-cold side temperature differential. For the hot-side duct, a large temperature gradient exists between the gas and solid surface temperature due to poor heat transfer through the gaseous medium. Adding the packing material inside the exhaust duct enhanced heat transfer and hence raised hot-side duct surface temperatures and thermoelectric power compared to the unpacked duct, particularly where the gas-to-surface temperature differential is highest. Therefore it is recommended that packing of exhaust duct becomes common practice in thermoelectric waste energy harvesting applications.

Ibrahim, Essam [Alabama A& M University, Normal; Szybist, James P [ORNL; Parks, II, James E [ORNL

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Nonlinear Elasticity of Flow-Stabilized Solids  

E-Print Network (OSTI)

Thermal fluctuations, geometric exclusion, and external driving all govern the mechanical response of dense particulate suspensions. Here, we measure the stress-strain response of quasi-two-dimensional flow-stabilized microsphere heaps in a regime in which all three effects are present using a microfluidic device. We observe that the elastic modulus and the mean interparticle separation of the heaps are tunable via the confining stress provided by the fluid flow. Furthermore, the measured stress-strain curves exhibit a universal nonlinear shape which can be predicted from a thermal van der Waals equation of state with excluded volume. This analysis indicates that many-body interactions contribute a significant fraction of the stress supported by the heap.

Carlos P. Ortiz; Karen E. Daniels; Robert Riehn

2014-07-20T23:59:59.000Z

402

Study of Low Speed Flow Cytometry for Diffraction Imaging with Different Chamber  

E-Print Network (OSTI)

for optimization of the chamber design and improvement of the cell positioning accuracy for study of slow moving utilize a sheath nozzle with a conical end or orifice for hydrodynamic focusing the fluid injected

403

Turbulent flow in graphene  

E-Print Network (OSTI)

We demonstrate the possibility of a turbulent flow of electrons in graphene in the hydrodynamic region, by calculating the corresponding turbulent probability density function. This is used to calculate the contribution of the turbulent flow to the conductivity within a quantum Boltzmann approach. The dependence of the conductivity on the system parameters arising from the turbulent flow is very different from that due to scattering.

Kumar S. Gupta; Siddhartha Sen

2009-11-03T23:59:59.000Z

404

Electrochromic projection and writing device  

DOE Patents (OSTI)

A display and projection apparatus includes an electrochromic material and a photoconductive material deposited in tandem used in conjunction with a light filtering means for filtering light transmitted through the electrochromic material. When an electric field is applied across the electrochromic material and the photoconductive material, light that is incident onto the photoconductive material through the surface of the projection apparatus causes the photoconductive material to conduct current locally in proportion to the amount of light incident on the photoconductive material. The flow of current causes the underlying portions of the electrochromic material to switch from an opaque state to a clear or transmissive state, thereby allowing back-light to propagate through the electrochromic material to create a visible image on the surface of the projection apparatus. Reversal of the electric field causes the electrochromic material to revert back to its opaque state, thereby blocking the transmission of back-light and effectively erasing the image from the surface of the projection apparatus.

Branz, Howard M. (Boulder, CO); Benson, David K. (Golden, CO)

2002-01-01T23:59:59.000Z

405

Muffler Theory Considering Flow  

Science Journals Connector (OSTI)

The effect of a steady subsonic flow component upon the acoustical properties of pipes and of laminar and turbulent flow resistances is accounted for in an elementary fashion. The effect of the alternating or acoustic component upon the steady?flow properties is treated likewise. Acoustic transmission loss referred to the end radiation from a pipe is related to back pressure (increase in steady pressure due to the muffler). Equivalent circuits and diagrams of transmission loss vs back pressure are presented for some simple arrangements of pipes volumes irises and flow resistances.

Ewald Eichler

1962-01-01T23:59:59.000Z

406

Utility of reactively sputtered CuN{sub x} films in spintronics devices  

SciTech Connect

We have studied nitrified copper (CuN{sub x}) thin films grown by reactive sputtering in the context of spintronic devices. The Ar-to-N{sub 2} flow ratio enables tunability of the electrical resistivity and surface roughness of the CuN{sub x} films, with the former increasing to nearly 20 times that of Cu, and the latter reduced to the atomic scale. Incorporating this into a Ta/CuN{sub x}/Ta seed stack for spin valves improves the current-in-plane (CIP) magnetoresistance; maximum magnetoresistance results with CuN{sub x} seed layer and Cu interlayer. Finally, finite element modeling results are presented that suggest the use of CuN{sub x} in nanocontact spin torque oscillators can enhance current densities by limiting the current spread through the device. This may positively impact threshold currents, power requirements, and device reliability.

Fang Yeyu [Physics Department, Goeteborg University, 412 96 Goeteborg (Sweden); Persson, J. [Physics Department, Goeteborg University, 412 96 Goeteborg (Sweden); NanOsc AB, Electrum 205, 164 40 Kista (Sweden); Zha, C. [Materials Physics Department, Royal Institute of Technology, Electrum 229, 164 40 Kista (Sweden); Willman, J.; Miller, Casey W. [Department of Physics, Center for Integrated Functional Materials, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620 (United States); Aakerman, Johan [Physics Department, Goeteborg University, 412 96 Goeteborg (Sweden); NanOsc AB, Electrum 205, 164 40 Kista (Sweden); Materials Physics Department, Royal Institute of Technology, Electrum 229, 164 40 Kista (Sweden)

2012-04-01T23:59:59.000Z

407

Energy-saving analysis in the hydraulic system of loader working device  

Science Journals Connector (OSTI)

Currently, with the increase of the fuel price, the demands for energy saving technology in construction machinery have been strengthened gradually. Various methods and theories for fuel consumption have been advanced. In this paper, a loader working device used in hydraulic system is built in SimulationX software. Based on the model, the energy saving strategies of the loader are analysed and the hydraulic system of loader working device was proposed to reduce the energy consumption and improve the working efficiency. Through the comparison between simulation and experimental results, several energy saving points can be found by analysing the pressure and flow. Moreover, it is concluded that overflow loss was the main way of power loss in hydraulic system of loader working device.

Weiwei Zhang; Jun Zhou; Yanliang Zhang; Panling Huang; Jianxin Deng

2012-01-01T23:59:59.000Z

408

Multiphase flow simulations of a moving fluidized bed regenerator in a carbon capture unit  

Science Journals Connector (OSTI)

Abstract To accelerate the commercialization and deployment of carbon capture technologies, computational fluid dynamics (CFD)-based tools may be used to model and analyze the performance of carbon capture devices. This work presents multiphase CFD flow simulations for the regenerator—a device responsible for extracting CO2 from CO2-loaded particles before the sorbent is recycled. The use of solid particle sorbents in this design is a departure from previously reported systems, where aqueous sorbents are employed. Another new feature is the inclusion of a series of perforated plates along the regenerator height. The influence of these plates on sorbent distribution is examined for varying sorbent holdup, fluidizing gas velocity, and particle size. The residence time distribution of sorbents is also measured to classify the flow regime as plug flow or well-mixed flow. The purpose of this work is to better understand the sorbent flow characteristics before reaction kinetics of CO2 desorption can be implemented.

Avik Sarkar; Wenxiao Pan; DongMyung Suh; E. David Huckaby; Xin Sun

2014-01-01T23:59:59.000Z

409

An analysis of weep holes as a product detection device for underground compensated LPG storage systems  

SciTech Connect

Weep holes have been used widely to detect the presence of Liquefied Petroleum Gases (LPG) in brine for underground compensated storage systems. When the brine level drops below the weep hole, LPG product enters the brine production system causing an increase in both tubing head pressure and flow rate. To prevent cavern overfill, a cavern shutdown is initiated upon detection of LPG in the surface brine system by pressure or flow instruments at the tubing head. In this study, we have investigated the multiphase flow characteristics of weep hole LPG detection systems to correctly estimate the operating limits. A simple and easy to use model has been developed to predict the tubing head pressure and flow rate increases. The model can be used to implement safer and more efficient operation procedures for underground compensated LPG storage systems. The model predictions for a typical field case are presented. An analysis of weep holes as product detection devices for LPG storage reservoirs has been carried out. It was found that the increases in pressure and flow rates at the tubing head change as a function of injection flow rate of the product. Therefore, a thorough consideration of cavern operating parameters is necessary to evaluate the use constant pressure and flow rate values to initiate emergency shut down of the cavern.

Sarica, C.; Demir, H.M.; Brill, J.P.

1996-09-01T23:59:59.000Z

410

Novel Ferroelectric Nanostructures for Nanoelectronic Devices  

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

Scientific Highlight 31 March 2008 Novel Ferroelectric Nanostructures for Nanoelectronic Devices New approaches to the fabrication of ferroelectric nanostructures onto substrates are critical for the development of competitive functional devices that successfully integrate at nanoscale ferroelectrics as alternative materials in the microelectronic industry. These approaches have to meet reliability and utilization requirements to realize a cost-effective production of an increasing demand for ultra-high-density memories or nanometric electromechanical systems. An important challenge in the fabrication of ferroelectric nanomaterials supported onto substrates is the ability to fabricate an organized arrangement of the nanostructures. This is a key point for the applications of ferroelectrics in nanoelectronic devices.

411

Integrated fuses for OLED lighting device  

DOE Patents (OSTI)

An embodiment of the present invention pertains to an electroluminescent lighting device for area illumination. The lighting device is fault tolerant due, in part, to the patterning of one or both of the electrodes into strips, and each of one or more of these strips has a fuse formed on it. The fuses are integrated on the substrate. By using the integrated fuses, the number of external contacts that are used is minimized. The fuse material is deposited using one of the deposition techniques that is used to deposit the thin layers of the electroluminescent lighting device.

Pschenitzka, Florian (San Jose, CA)

2007-07-10T23:59:59.000Z

412

Self bleaching photoelectrochemical-electrochromic device  

DOE Patents (OSTI)

A photoelectrochemical-electrochromic device comprising a first transparent electrode and a second transparent electrode in parallel, spaced relation to each other. The first transparent electrode is electrically connected to the second transparent electrode. An electrochromic material is applied to the first transparent electrode and a nanoporous semiconductor film having a dye adsorbed therein is applied to the second transparent electrode. An electrolyte layer contacts the electrochromic material and the nanoporous semiconductor film. The electrolyte layer has a redox couple whereby upon application of light, the nanoporous semiconductor layer dye absorbs the light and the redox couple oxidizes producing an electric field across the device modulating the effective light transmittance through the device.

Bechinger, Clemens S. (Konstanz, DE); Gregg, Brian A. (Golden, CO)

2002-04-09T23:59:59.000Z

413

Organic photosensitive devices using subphthalocyanine compounds  

DOE Patents (OSTI)

An organic photosensitive optoelectronic device, having a donor-acceptor heterojunction of a donor-like material and an acceptor-like material and methods of making such devices is provided. At least one of the donor-like material and the acceptor-like material includes a subphthalocyanine, a subporphyrin, and/or a subporphyrazine compound; and/or the device optionally has at least one of a blocking layer or a charge transport layer, where the blocking layer and/or the charge transport layer includes a subphthalocyanine, a subporphyrin, and/or a subporphyrazine compound.

Rand, Barry (Princeton, NJ); Forrest, Stephen R. (Ann Arbor, MI); Mutolo, Kristin L. (Hollywood, CA); Mayo, Elizabeth (Alhambra, CA); Thompson, Mark E. (Anaheim Hills, CA)

2011-07-05T23:59:59.000Z

414

Optoelectronic semiconductor device and method of fabrication  

DOE Patents (OSTI)

An optoelectronic device comprising an optically active layer that includes a plurality of domes is presented. The plurality of domes is arrayed in two dimensions having a periodicity in each dimension that is less than or comparable with the shortest wavelength in a spectral range of interest. By virtue of the plurality of domes, the optoelectronic device achieves high performance. A solar cell having high energy-conversion efficiency, improved absorption over the spectral range of interest, and an improved acceptance angle is presented as an exemplary device.

Cui, Yi; Zhu, Jia; Hsu, Ching-Mei; Fan, Shanhui; Yu, Zongfu

2014-11-25T23:59:59.000Z

415

MHK Technologies/Device for the Power Advantage of Sea Currents | Open  

Open Energy Info (EERE)

for the Power Advantage of Sea Currents for the Power Advantage of Sea Currents < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Device for the Power Advantage of Sea Currents.jpg Technology Profile Primary Organization Carmelo Vell n Technology Resource Click here Current Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The project is a device for connection of turbines or hydraulic wheels in order to obtain energy from a water current variable in depth and direction of flow Its installation is executed by a mechanism of pivots in a direct way or a ballast at the sub aqueous bottom Its particular hydrodynamic morphology contributes to the direction and stabilization of all the set in the direction and sine of the current It has a series of devices able to measure the intensity of the current flow to orient the equipment towards the most favorable angle of attack of that flow towards the turbine It s applicable to any type of water current but it s especially suitable for the location in a basic sea current It allows to lodge different types from turbines or hydraulic wheels with the main object of the obtaining of energy preferably electrical which can be obtained by the combination of the turbine installed with a generator The project is placed then in the scope of the ecological and rene

416

Elbow mass flow meter  

DOE Patents (OSTI)

The present invention includes a combination of an elbow pressure drop generator and a shunt-type mass flow sensor for providing an output which gives the mass flow rate of a gas that is nearly independent of the density of the gas. For air, the output is also approximately independent of humidity. 3 figs.

McFarland, A.R.; Rodgers, J.C.; Ortiz, C.A.; Nelson, D.C.

1994-08-16T23:59:59.000Z

417

Instream Flow Project  

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

As a part of the Department of Energy’s Water Power Program, the Instream Flow Project was carried out by Oak Ridge National Laboratory, Pacific Northwest National Laboratory, and Argonne National Laboratory to develop tools aimed at defining environmental flow needs for hydropower operations.

418

Productivity & Energy Flow  

E-Print Network (OSTI)

1 Productivity & Energy Flow Ecosystem approach, focuses: on flow of energy, water, and nutrients (capture) of energy by autotrophs Gross (total) Net (total ­ costs) Secondary productivity- capture of energy by herbivores http://sciencebitz.com/?page_id=204 What Controls the Primary Productivity

Mitchell, Randall J.

419

The effect of anchoring on nematic flow in channels  

E-Print Network (OSTI)

Understanding the flow of liquid crystals in microfluidic environments plays an important role in many fields, including device design and microbiology. We perform hybrid lattice-Boltzmann simulations of a nematic liquid crystal flowing under an applied pressure gradient in two-dimensional channels with various anchoring boundary conditions at the substrate walls. We investigate the relation between flow rate and pressure gradient and the corresponding profile of the nematic director, and find significant departures from the linear Poiseuille relation. We also identify a morphological transition in the director profile and explain this in terms of an instability in the dynamical equations. We examine the qualitative and quantitative effects of changing the type and strength of the anchoring. Understanding such effects may provide a useful means of quantifying the anchoring of a substrate by measuring its flow properties.

V. M. O. Batista; M. L. Blow; M. M. Telo da Gama

2014-09-18T23:59:59.000Z

420

Plasma flow at a high Mach-number  

SciTech Connect

Unlike the case of static magnetohydrodynamic (MHD) equilibria, where an expansion in large aspect ratio of toroidal devices is common, cases of MHD equilibria with flow are rarely treated this way, and when this is done the expansion tends to be only partial. The main reason for the difference seems to be the difficulty of expanding the larger system of equilibrium equations with flow. Here, we use a recent expansion technique which employs a variational principle to simplify the process [E. Hameiri, Phys. Plasmas 20, 024504 (2013)]. We treat four cases of MHD equilibria with flow, developing their asymptotic expansions in full, and for an application consider the effect of the flow on the Shafranov shift.

Yu, Bing; Hameiri, Eliezer [Courant Institute of Mathematical Sciences, New York University New York, New York 10012 (United States)] [Courant Institute of Mathematical Sciences, New York University New York, New York 10012 (United States)

2013-09-15T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

1-ID: Sector 1, Insertion Device Beamline  

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

1-ID beamline schematic 1-ID beamline schematic ID on-axis brilliance values 1-ID - Sector 1, Insertion Device Beamline Responsible Scientists Jon Almer, phone: (630) 252-1049, e-mail: almer@aps.anl.gov Sarvjit Shastri, phone: (630) 252-0129, e-mail: shastri@aps.anl.gov John Okasinski, phone: (630) 252-0162, e-mail: okasinski@aps.anl.gov Peter Kenesei, phone: (630) 252-0133, e-mail: kenesei@aps.anl.gov Scientific Programs Coupled high-energy SAXS/WAXS studies (HE-SAXS/WAXS) High-energy diffraction microscopy (HEDM) Single-grain studies Stress/strain/texture studies Pair-distribution function (PDF) measurements High-energy fluorescence Source Characteristics Upstream insertion device: APS Undulator A No. of Poles 72 Undulator Period 3.3 cm Device Length 2.4 m Minimum Gap 11 mm Downstream insertion device

422

Definition: Facts Device | Open Energy Information  

Open Energy Info (EERE)

Facts Device Facts Device Jump to: navigation, search Dictionary.png Facts Device An electronic system and other static equipment that provide control of one or more AC transmission system parameters to enhance controllability and increase power transfer capability.[1] Related Terms transmission lines, system, transmission line References ↑ [www.smartgrid.gov/sites/default/files/pdfs/description_of_assets.pdf SmartGrid.gov 'Description of Assets'] An in LikeLike UnlikeLike You like this.Sign Up to see what your friends like. line Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Facts_Device&oldid=480398" Categories: Definitions ISGAN Definitions What links here Related changes Special pages Printable version Permanent link Browse properties

423

Performance of Installed Cooking Exhaust Devices  

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

Performance of Installed Cooking Exhaust Devices Performance of Installed Cooking Exhaust Devices Brett C. Singer, William W. Delp, Michael G. Apte, Philip N. Price Environmental Energy Technologies Division Lawrence Berkeley National Laboratory Berkeley, California, 94720 November 2011 Direct funding for this research was provided by the California Energy Commission through Contracts 500-05-026 and 500-08-061. Institutional support is provided to LBNL by the U.S. Department of Energy, Office of Science under Contract DE-AC02-05CH11231. LBNL-5265E-r1(3) Singer et al., Performance of Installed Cooking Exhaust Devices LBNL-5265E-r1(3) Performance of Installed Cooking Exhaust Devices Brett C. Singer 1

424

Stunning device as a suicide weapon  

Science Journals Connector (OSTI)

Thirteen patients who had attempted suicide with the stunning device, were treated over a time span of eleven years. Five of them died. The survivors made a satisfactory recovery with minor neurological sequel...

B. Klun; V. Jankovi?

1989-01-01T23:59:59.000Z

425

Investigation of nerve injury through microfluidic devices  

Science Journals Connector (OSTI)

...compartments with chemical reagents. Microfluidic platforms further facilitate...Microfluidic platforms can be broadly...devices that model chemical and physical...vivo setting. Chemical injury can be...microfluidic platform, whereas physical...

2014-01-01T23:59:59.000Z

426

Rating of Solar Energy Devices (Texas)  

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

The Public Utility Commission has regulatory authority over solar energy devices installed and used in the state of Texas. The Commission can choose to adopt standards pertaining to the rating of...

427

Asbestos : operating system security for mobile devices  

E-Print Network (OSTI)

This thesis presents the design and implementation of a port of the Asbestos operating system to the ARM processor. The port to the ARM allows Asbestos to run on mobile devices such as cell phones and personal digital ...

Stevenson, Martijn

2006-01-01T23:59:59.000Z

428

Phosphorylation based insulation devices design and implementation  

E-Print Network (OSTI)

This thesis presents the analysis of a phosphorylation based insulation device implemented in Saccharomyces cerevisae and the minimization of the retroactivity to the input and retroactivity to the output of a single cycle ...

Rivera Ortiz, Phillip M. (Phillip Michael)

2013-01-01T23:59:59.000Z

429

Chemically sensitive interfaces on SAW devices  

SciTech Connect

Using surface acoustic wave (SAW) devices, three approaches to the effective use of chemically sensitive interfaces that are not highly chemically selective have been examined: (1) molecular identification from time-resolved permeation transients; (2) using multifrequency SAW devices to determine the frequency dependence of analyte/film interactions; (3) use of an array of SAW devices bearing diverse chemically sensitive interfaces to produce a distinct response pattern for each analyte. In addition to their well-known sensitivity to mass changes (0.0035 monolayer of N{sub 2} can be measured), SAW devices respond to the mechanical and electronic properties of thin films, enhancing response information content but making a thorough understanding of the perturbation critical. Simultaneous measurement of changes in frequency and attenuation, which can provide the information necessary to determine the type of perturbation, are used as part of the above discrimination schemes.

Ricco, A.J.; Martin, S.J. [Sandia National Labs., Albuquerque, NM (United States); Crooks, R.M.; Xu, Chuanjing [Texas A and M Univ., College Station, TX (United States); Allred, R.E. [Adherent Technologies, Inc., Albuquerque, NM (United States)

1993-11-01T23:59:59.000Z

430

Theoretical Analysis of Prospective Nanoelectronic Devices  

E-Print Network (OSTI)

, albeit at deep refrigeration. Alterna- tively, the comparator may be used for measurement of current (or . . . . . . . . . . . . . . . . 21 2.2.4 Charge Density . . . . . . . . . . . . . . . . . . . . . . 22 2.2.5 Device Current

431

Propeller based human powered swimming device  

E-Print Network (OSTI)

Currently the only human powered swimming device widely sold on the market are swim flippers. However, flippers are not efficient for the human body, and there is a potential to increase the speed while swimming with a ...

Bunker, Kristine (Kristine Alina)

2014-01-01T23:59:59.000Z

432

Polymer-based electrocaloric cooling devices  

DOE Patents (OSTI)

Cooling devices (i.e., refrigerators or heat pumps) based on polymers which exhibit a temperature change upon application or removal of an electrical field or voltage, (e.g., fluoropolymers or crosslinked fluoropolymers that exhibit electrocaloric effect).

Zhang, Qiming; Lu, Sheng-Guo; Li, Xinyu; Gorny, Lee; Cheng, Jiping; Neese, Bret P; Chu, Baojin

2014-10-28T23:59:59.000Z

433

Towards reproducible, scalable lateral molecular electronic devices  

E-Print Network (OSTI)

1 Towards reproducible, scalable lateral molecular electronic devices Colm Durkan1,* & Qian Zhang 1: Nanoscience Centre, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom *: email: cd229@eng.cam.ac.uk (Dated...

Durkan, Colm; Zhang, Qian

2014-08-26T23:59:59.000Z

434

Heat Transfer in Thermoelectric Materials and Devices  

E-Print Network (OSTI)

Solid-state thermoelectric devices are currently used in applications ranging from thermocouple sensors to power generators in space missions, to portable air-conditioners and refrigerators. With the ever-rising demand ...

Tian, Zhiting

435

Testing of Kaonetics Devices at BNL  

SciTech Connect

The goal of these measurements was to evaluate whether there is evidence of emission of X-rays, gamma-rays, and neutrons by devices developed by Kaonetics Technologies, Inc. during their operation.

Bolotnikov, A.; Smith, G.; and James, R.B.

2011-06-01T23:59:59.000Z

436

A Nanophotonic Solar Thermophotovoltaic Device Andrej Lenerta  

E-Print Network (OSTI)

A Nanophotonic Solar Thermophotovoltaic Device Andrej Lenerta , David M. Biermana , Youngsuk Nama Laboratory b Research Laboratory of Electronics c Institute for Soldier Nanotechnology Massachusetts, Yongin, Korea Corresponding Author: Evelyn N. Wang Department of Mechanical Engineering Massachusetts

Soljaèiæ, Marin

437

Microelectronic Devices and Circuits - 2006 Electronic Edition  

E-Print Network (OSTI)

Combining semiconductor device physics and modeling with electronic circuit analysis and practice in a single sophomore/junior level microelectronics course, this textbook offers an integrated approach so students can truly ...

Fonstad, Clifton

2006-10-01T23:59:59.000Z

438

Molecular-scale devices from first principles  

E-Print Network (OSTI)

Electronic structure calculations are becoming more widely applied to complex and realistic materials systems and devices, reaching well into the domain of nanotechnology, with applications that include metal-molecule ...

Singh-Miller, Nicholas E. (Nicholas Edward)

2009-01-01T23:59:59.000Z

439

Applications of Graphene Devices in RF Communications  

E-Print Network (OSTI)

Graphene, a one-atom-thick layer of carbon atoms arranged in a honeycomb lattice, has recently attracted great interest among physicists and engineers. The combination of the unique properties of graphene with new device ...

Palacios, Tomas

440

Hyperpolarizable compounds and devices fabricated therefrom  

DOE Patents (OSTI)

Substituted compounds having relatively large molecular first order hyperpolarizabilities are provided, along with devices and materials containing them. In general, the compounds bear electron-donating and electron-withdrawing chemical substituents on a polyheterocyclic core. 13 figs.

Therien, M.J.; DiMagno, S.G.

1998-07-21T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Carbon nanotube polymer composition and devices  

DOE Patents (OSTI)

A thin film device and compound having an anode, a cathode, and at least one light emitting layer between the anode and cathode, the at least one light emitting layer having at least one carbon nanotube and a conductive polymer.

Liu, Gao (Oakland, CA); Johnson, Stephen (Richmond, CA); Kerr, John B. (Oakland, CA); Minor, Andrew M. (El Cerrito, CA); Mao, Samuel S. (Castro Valley, CA)

2011-06-14T23:59:59.000Z

442

Thermal Insulation in Solar Thermal Devices  

Science Journals Connector (OSTI)

Thermal Insulation is a device or a practice which is used in a system for minimising heat losses caused due to transfer of heat from hotter to colder regions. It is one of the cheapest methods of energy conse...

B. C. Raychaudhuri

1986-01-01T23:59:59.000Z

443

Advanced nanofabrication of thermal emission devices  

E-Print Network (OSTI)

Nanofabricated thermal emission devices can be used to modify and modulate blackbody thermal radiation. There are many areas in which altering thermal radiation is extremely useful, especially in static power conversion, ...

Hurley, Fergus (Fergus Gerard)

2008-01-01T23:59:59.000Z

444

Device integration for silicon microphotonic platforms  

E-Print Network (OSTI)

Silicon ULSI compatible, high index contrast waveguides and devices provide high density integration for optical networking and on-chip optical interconnects. Four such waveguide systems were fabricated and analyzed: ...

Lim, Desmond Rodney

2000-01-01T23:59:59.000Z

445

8-Classtype Tallying Device and Counter  

Science Journals Connector (OSTI)

...laboratories. The fundamental treatise of Malmstadt...1) on digital electronic circuits in use...laboratory of digital electronic circuits. MATERIALS...detail (2). The fundamental opera- tions of digital electronic devices were extensively...

James N. Adams

1974-09-01T23:59:59.000Z

446

Breakthrough: Fusion Research Leads to Antiterrorism Device  

SciTech Connect

How researchers at the Princeton Plasma Physics Laboratory developed an antiterrorism device that can detect and identify sources of dangerous radiation that could be used in a dirty bomb.

Gentile, Charles; Mastrovito, Dana; Prager Stewart

2012-04-24T23:59:59.000Z

447

FUEL DEVICE REPLACEMENT Use this application to request a replacement fuel access device for a device that has been lost or stolen. Use and  

E-Print Network (OSTI)

FUEL DEVICE REPLACEMENT Use this application to request a replacement fuel access device as those explained in the original Fuel Device Application and for your convenience provided on this form Information Lost Stolen Unknown Date of last known use Certification of Use I certify that fuel access device

Kirschner, Denise

448

Obfuscated authentication systems, devices, and methods  

DOE Patents (OSTI)

Embodiments of the present invention are directed toward authentication systems, devices, and methods. Obfuscated executable instructions may encode an authentication procedure and protect an authentication key. The obfuscated executable instructions may require communication with a remote certifying authority for operation. In this manner, security may be controlled by the certifying authority without regard to the security of the electronic device running the obfuscated executable instructions.

Armstrong, Robert C; Hutchinson, Robert L

2013-10-22T23:59:59.000Z

449

Design and Fabrication of Nanochannel Devices  

E-Print Network (OSTI)

and Stage 2 can be shifted horizontally to x-direction by rotating the handle. Butane torch is placed under the tubing to heat it up. The inset shows the deformation of the tubing under the heat and stretching??????? ..29 Fig. 12 SEM images... pace. In 1990s, a research interest in fluid handling microchannel devices boosted because of their genomics application and potential capability in bio/chemical agent detection. Now the fabrication techniques have pushed those devices down...

Wang, Miao

2010-10-12T23:59:59.000Z

450

DEVELOPMENT OF AN ADHESIVE CANDLE FILTER SAFEGUARD DEVICE  

SciTech Connect

In order to reach the highest possible efficiencies in a coal-fired turbine-based power system, the turbine should be directly fired with the products of coal conversion. Two main types of systems employ these turbines: those based on pressurized fluidized-bed combustors and those based on integrated gasification combined cycles. In both systems, suspended particulates must be cleaned from the gas stream before it enters the turbine so as to prevent fouling and erosion of the turbine blades. To produce the cleanest gas, barrier filters are being developed and are in use in several facilities. Barrier filters are composed of porous, high-temperature materials that allow the hot gas to pass but collect the particulates on the surface. The three main configurations of the barrier filters are candle, cross-flow, and tube filters. Both candle and tube filters have been tested extensively. They are composed of coarsely porous ceramic that serves as a structural support, overlain with a thin, microporous ceramic layer on the dirty gas side that serves as the primary filter surface. They are highly efficient at removing particulate matter from the gas stream and, because of their ceramic construction, are resistant to gas and ash corrosion. However, ceramics are brittle and individual elements can fail, allowing particulates to pass through the hole left by the filter element and erode the turbine. Preventing all failure of individual ceramic filter elements is not possible at the present state of development of the technology. Therefore, safeguard devices (SGDs) must be employed to prevent the particulates streaming through occasional broken filters from reaching the turbine. However, the SGD must allow for the free passage of gas when it is not activated. Upon breaking of a filter, the SGD must either mechanically close or quickly plug with filter dust to prevent additional dust from reaching the turbine. Production of a dependable rapidly closing autonomous mechanical device at high temperatures in a dusty gas stream is difficult because of problems with materials corrosion, dust leakage, and detection of filter failure. Therefore, the Energy & Environmental Research Center is using its knowledge of the factors that make filter dust sticky at gas filtration temperatures to make a simple and inexpensive SGD that employs an adhesive yet thermodynamically stable coating on a highly porous ceramic substrate. The SGDs are placed on top of individual candle filters at the filtered gas exit. Upon failure of the filter, the dirty gas flows through the SGD where the adhesive surface rapidly and permanently traps dust particles, causing the device to plug and prevent the dust from reaching the turbine.

John P. Hurley; Ann K. Henderson; Jan W. Nowok; Michael L. Swanson

2002-01-01T23:59:59.000Z

451

Elliptic flow phenomenon at ATLAS  

E-Print Network (OSTI)

We summarize measurements of elliptic flow and higher order flow harmonics performed by the ATLAS experiment at the LHC. Results on event-averaged flow measurements and event-plane correlations in Pb+Pb collisions are discussed along with the event-by-event flow measurements. Further, we summarize results on flow in p+Pb collisions.

Martin Spousta

2014-06-20T23:59:59.000Z

452

Translating semiconductor device physics into nanoparticle films for electronic applications  

E-Print Network (OSTI)

This thesis explores and quantifies some of the important device physics, parameters, and mechanisms of semiconductor nanocrystal quantum dot (QD) electronic devices, and photovoltaic devices in particular. This involves ...

Wanger, Darcy Deborah

2014-01-01T23:59:59.000Z

453

Inexpensive and Mobile Microfluidic Devices Stephen McKinley  

E-Print Network (OSTI)

Inexpensive and Mobile Microfluidic Devices Stephen McKinley Faculty Mentor: Professor Christopher Salthouse, Electrical & Computer Engineering Microfluidic devices have been gaining popularity. Traditionally, the development and manufacturing of microfluidic devices requires the use of a clean room

Mountziaris, T. J.

454

Assistive listening devices drive neuroplasticity in children with dyslexia  

Science Journals Connector (OSTI)

Assistive listening devices drive neuroplasticity in children...typically developing peers. Assistive listening devices (classroom FM systems) may reduce...show these effects. Assistive listening devices can improve the neural representation of...

Jane Hornickel; Steven G. Zecker; Ann R. Bradlow; Nina Kraus

2012-01-01T23:59:59.000Z

455

CORRELATION OF CRYSTAL DEFECTS AND BIPOLAR DEVICE BEHAVIOUR (*)  

E-Print Network (OSTI)

devices, fabricated with a triple diffusion process, is presented. Anodic decoration, etching techniques _ Detection techniques and device characteristics Detection techniques Electrical device measurements Anodic The anodic decoration method [3] is very

Boyer, Edmond

456

COLLOQUIUM: The Main Results from the C-2 Device | Princeton...  

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

in the C-2 device have recently concluded after six years of operation. Research will resume in winter 2015 on an upgraded device. The main goal of the C-2 device was to establish...

457

Power-aware data management for small devices  

Science Journals Connector (OSTI)

Pervasive computing devices such as Personal Digital Assistants (PDAs) and laptop computers are becoming increasingly ubiquitous. The future promises even more advanced devices such as digital watches, jewelry, and even clothing. However, as pervasive ... Keywords: content management, energy, small devices

Sami Rollins; Kevin Almeroth; Dejan Milojiv?i?; Kiran Nagaraja

2002-09-01T23:59:59.000Z

458

Droplet Formation via Solvent Shifting in a Microfluidic Device  

E-Print Network (OSTI)

Solvent shifting is a process in which a non-solvent is added to a solvent/solute mixture and extracts the solvent. The solvent and the non-solvent are miscible. Because of solution supersaturation a portion of the solute transforms to droplets. In this paper, based on this process, we present an investigation on droplet formation and their radial motion in a microfluidic device in which a jet is injected in a co-flowing liquid stream. Thanks to the laminar flow, the microfluidic setup enables studying diffusion mass transfer in radial direction and obtaining well-defined concentration distributions. Such profiles together with Ternary Phase Diagram (TPD) give detailed information about the conditions for droplet formation condition as well as their radial migration in the channel. The ternary system is composed of ethanol (solvent), de-ionized water (non-solvent) and divinyle benzene (solute). We employ analytical/numerical solutions of the diffusion equation to obtain concentration profiles of the component...

Hajian, Ramin

2014-01-01T23:59:59.000Z

459

High Average Power Laser Gain Medium With Low Optical Distortion Using A Transverse Flowing Liquid Host  

DOE Patents (OSTI)

A high average power, low optical distortion laser gain media is based on a flowing liquid media. A diode laser pumping device with tailored irradiance excites the laser active atom, ion or molecule within the liquid media. A laser active component of the liquid media exhibits energy storage times longer than or comparable to the thermal optical response time of the liquid. A circulation system that provides a closed loop for mixing and circulating the lasing liquid into and out of the optical cavity includes a pump, a diffuser, and a heat exchanger. A liquid flow gain cell includes flow straighteners and flow channel compression.

Comaskey, Brian J. (Walnut Creek, CA); Ault, Earl R. (Livermore, CA); Kuklo, Thomas C. (Oakdale, CA)

2005-07-05T23:59:59.000Z

460

Figure 1. Photolithography techniques are used to create microfluidic flow cells where biofouling can be studied for  

E-Print Network (OSTI)

Figure 1. Photolithography techniques are used to create microfluidic flow cells where biofouling and construct microfluidic flow cells for real-time observation of bacterial attachment and biofouling. He microfluidic devices, and computer multiphysics simulation with COMSOL. The student will also learn to work

Shor, Leslie McCabe

Note: This page contains sample records for the topic "flow orifice devices" 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

Methods and devices for fabricating and assembling printable semiconductor elements  

DOE Patents (OSTI)

The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.

Nuzzo, Ralph G. (Champaign, IL); Rogers, John A. (Champaign, IL); Menard, Etienne (Urbana, IL); Lee, Keon Jae (Savoy, IL); Khang, Dahl-Young (Urbana, IL); Sun, Yugang (Champaign, IL); Meitl, Matthew (Champaign, IL); Zhu, Zhengtao (Urbana, IL)

2009-11-24T23:59:59.000Z

462

Methods and devices for fabricating and assembling printable semiconductor elements  

DOE Patents (OSTI)

The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.

Nuzzo, Ralph G; Rogers, John A; Menard, Etienne; Lee, Keon Jae; Khang, Dahl-Young; Sun, Yugang; Meitl, Matthew; Zhu, Zhengtao

2013-05-14T23:59:59.000Z

463

Methods and devices for fabricating and assembling printable semiconductor elements  

DOE Patents (OSTI)

The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.

Nuzzo, Ralph G; Rogers, John A; Menard, Etienne; Lee, Keon Jae; Khang, Dahl-Young; Sun, Yugang; Meitl, Matthew; Zhu, Zhengtao

2014-03-04T23:59:59.000Z

464

Methods and devices for fabricating and assembling printable semiconductor elements  

DOE Patents (OSTI)

The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.

Nuzzo, Ralph G. (Champaign, IL); Rogers, John A. (Champaign, IL); Menard, Etienne (Durham, NC); Lee, Keon Jae (Daejeon, KR); Khang, Dahl-Young (Urbana, IL); Sun, Yugang (Champaign, IL); Meitl, Matthew (Raleigh, NC); Zhu, Zhengtao (Urbana, IL)

2011-07-19T23:59:59.000Z

465

15 - Measurement  

Science Journals Connector (OSTI)

Publisher Summary This chapter focuses on the various methods and equipments used in the measurement of liquids and gases in pipelines. Streams that transport mixed natural gas liquids require the use of mass measurement to accurately account for the volume of the components, which make up the mix. Mass measurement eliminates the effects of non-ideal mixing and the need for compressibility factors. The measurement system that provides basic simplicity, reliability, wide acceptance, and the capability of handling variable mix streams without breaking new frontiers in measurement methods is the orifice flow measuring element with online density meter and microprocessor flow computer. The orifice is a static device generally inert to the measured fluid conditions, and calibration consists of simple dimensional measurement and conformance to specified physical tolerances. The second element, the density meter, is an external unit that is easily isolated from the flowing stream for calibration, inspection, and maintenance. The relative insensitivity of CO2 density to small changes in pressure in the primary flow to the orifice meters permits locating the density meter upstream of the meter manifold, thereby serving several meters. The microprocessor flow computer, or third element of the system, is essential to achieve the advantages of integrated mass flow, which comes from the ability of the computer to make computations in essentially "real time." A development program to improve the overall uncertainty of orifice metering was initiated by Shell Pipeline Corporation. The program's goal was to develop an economical method for proving ethylene orifice meters under actual operating conditions. Shell's ethylene systems are operated in the dense phase fluid region due to lower transportation costs. The ethylene meter stations operate in two regions, the dense-phase fluid and single-phase gas regions.

2005-01-01T23:59:59.000Z

466

Advanced Materials and Devices for Stationary Electrical Energy...  

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

Materials and Devices for Stationary Electrical Energy Storage Applications Advanced Materials and Devices for Stationary Electrical Energy Storage Applications Reliable access to...

467

6.012 Microelectronic Devices and Circuits, Fall 2003  

E-Print Network (OSTI)

Modeling of microelectronic devices, and basic microelectronic circuit analysis and design. Physical electronics of semiconductor junction and MOS devices. Relation of electrical behavior to internal physical processes; ...

Fonstad, Clifton G.

468

articular prosthetic device: Topics by E-print Network  

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

Device Analysis CiteSeer Summary: AbstractThe increased usage and proliferation of small scale digital devices, like celluar (mobile) phones has led to the emergence of...

469

Los Alamos devices capture 'Oscars of Invention' awards  

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

Los Alamos devices capture 'Oscars of Invention' awards Los Alamos devices capture 'Oscars of Invention' awards Safire oil-well measurement and AWS laser-based spectrometer for...

470

Cathodoluminescence from a device of carbon nanotube-field emission...  

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

Cathodoluminescence from a device of carbon nanotube-field emission display with ZnO nanocluster phosphor. Cathodoluminescence from a device of carbon nanotube-field emission...

471

Rapid Compression Machine ? A Key Experimental Device to Effectively...  

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

Rapid Compression Machine A Key Experimental Device to Effectively Collaborate with Basic Energy Sciences Rapid Compression Machine A Key Experimental Device to Effectively...

472

Advanced, High Power, Next Scale, Wave Energy Conversion Device...  

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

Advanced, High Power, Next Scale, Wave Energy Conversion Device Advanced, High Power, Next Scale, Wave Energy Conversion Device Advanced, High Power, Next Scale, Wave Energy...

473

Institute of Photo Electronic Thin Film Devices and Technology...  

Open Energy Info (EERE)

Institute of Photo Electronic Thin Film Devices and Technology of Nankai University Jump to: navigation, search Name: Institute of Photo-Electronic Thin Film Devices and Technology...

474

Nanoscale contact engineering for Si/Silicide nanowire devices.  

E-Print Network (OSTI)

??Metal silicides have been used in silicon technology as contacts to achieve high device performance and desired device functions. The growth and applications of silicide… (more)

Lin, Yung-Chen

2012-01-01T23:59:59.000Z

475

Testing, Training, and Signature Devices | Y-12 National Security...  

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

Testing, Training, and ... Testing, Training, and Signature Devices Y-12 manufactures specialized uranium testing, training, and signature devices to support the nuclear detection...

476

Hydrogen Station Test Device Design and Fabrication | Department...  

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

Hydrogen Station Test Device Design and Fabrication Hydrogen Station Test Device Design and Fabrication October 2, 2014 - 3:02pm Addthis Open Date: August 26, 2014 Requesting...

477

Nanosized Optoelectronic Devices Based on Photoactivated Proteins Alice Dimonte,*,  

E-Print Network (OSTI)

Nanosized Optoelectronic Devices Based on Photoactivated Proteins Alice Dimonte,*, Stefano Frache gold electrodes have been used to develop optoelectronic devices based on photoactive proteins

De Micheli, Giovanni

478

Sensorless temperature estimation and control of Peltier devices .  

E-Print Network (OSTI)

??Peltier devices, also known as thermoelectric devices (TEDs), are solid state junctions of two dissimilar materials in which heat transfer and electrical conduction are coupled.… (more)

Odhner, Lael Ulam, 1980-

2006-01-01T23:59:59.000Z

479

Development of a Thermoelectric Device for an Automotive Zonal...  

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

a Thermoelectric Device for an Automotive Zonal HVAC System Development of a Thermoelectric Device for an Automotive Zonal HVAC System Presents development of a thermoelectric...

480

GERSHEY, ROBERT M. A bubble adsorption device for the isolation ...  

Science Journals Connector (OSTI)

Apr 21, 1982 ... A bubble adsorption device for the isolation of surface-active organic matter in seawater1. Abstract-A new sampling device uses a bubble ...

2000-02-08T23:59:59.000Z

Note: This page contains sample records for the topic "flow orifice devices" 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

Theory and fabrication of evanescently-coupled photoluminescent devices  

E-Print Network (OSTI)

This thesis discusses the theory and implementation of evanescently-coupled photoluminescent devices. We demonstrate the feasibility of efficient, spectrally tunable lighting devices through quantum dot photoluminescence. ...

Friend, David Harry

2008-01-01T23:59:59.000Z

482

Shroud leakage flow discouragers  

DOE Patents (OSTI)

A turbine assembly includes a plurality of rotor blades comprising a root portion, an airfoil having a pressure sidewall and a suction sidewall, and a top portion having a cap. An outer shroud is concentrically disposed about said rotor blades, said shroud in combination with said tip portions defining a clearance gap. At least one circumferential shroud leakage discourager is disposed within the shroud. The leakage discourager(s) increase the flow resistance and thus reduce the flow of hot gas flow leakage for a given pressure differential across the clearance gap to improve overall turbine efficiency.

Bailey, Jeremy Clyde (Middle Grove, NY); Bunker, Ronald Scott (Niskayuna, NY)

2002-01-01T23:59:59.000Z

483

Bypass Flow Study  

SciTech Connect

The purpose of the fluid dynamics experiments in the MIR (Matched Index of-Refraction) flow system at Idaho National Laboratory (INL) is to develop benchmark databases for the assessment of Computational Fluid Dynamics (CFD) solutions of the momentum equations, scalar mixing, and turbulence models for the flow ratios between coolant channels and bypass gaps in the interstitial regions of typical prismatic standard fuel element (SFE) or upper reflector block geometries of typical Modular High-temperature Gas-cooled Reactors (MHTGR) in the limiting case of negligible buoyancy and constant fluid properties. The experiments use Particle Image Velocimetry (PIV) to measure the velocity fields that will populate the bypass flow study database.

Richard Schultz

2011-09-01T23:59:59.000Z

484

Magnetically stimulated fluid flow patterns  

ScienceCinema (OSTI)

Sandia National Laboratories' Jim Martin and Kyle Solis explain research on the effects of magnetic fields on fluid flows and how they stimulate vigorous flows. Fluid flow is a necessary phenomenon in everything from reactors to cooling engines in cars.

Martin, Jim; Solis, Kyle

2014-08-06T23:59:59.000Z

485

Semiconductor-based, large-area, flexible, electronic devices on {110}<100> oriented substrates  

DOE Patents (OSTI)

Novel articles and methods to fabricate the same resulting in flexible, oriented, semiconductor-based, electronic devices on {110}<100> textured substrates are disclosed. Potential applications of resulting articles are in areas of photovoltaic devices, flat-panel displays, thermophotovoltaic devices, ferroelectric devices, light emitting diode devices, computer hard disc drive devices, magnetoresistance based devices, photoluminescence based devices, non-volatile memory devices, dielectric devices, thermoelectric devices and quantum dot laser devices.

Goyal, Amit

2014-08-05T23:59:59.000Z

486

Podscanning : audio microcontent and synchronous communication for mobile devices ; Audio microcontent and synchronous communication for mobile devices .  

E-Print Network (OSTI)

??Over the past decade, computationally powerful audio communication devices have become commonplace. Mobile devices have high storage capacity for digital audio, and smartphones or networked… (more)

Wheeler, Patrick Sean

2010-01-01T23:59:59.000Z

487

RMOTC - Testing - Flow Assurance  

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

Flow Assurance Flow Assurance RMOTC Flow Loop Facility Layout Notice: As of July 15th 2013, the Department of Energy announced the intent to sell Naval Petroleum Reserve Number 3 (NPR3). The sale of NPR-3 will also include the sale of all equipment and materials onsite. A decision has been made by the Department of Energy to complete testing at RMOTC by July 1st, 2014. RMOTC will complete testing in the coming year with the currently scheduled testing partners. For more information on the sale of NPR-3 and sale of RMOTC equipment and materials please join our mailing list here. Over a decade ago, RMOTC began cooperatively building a full-scale facility to test new flow assurance technology, mainly in the areas of hydrates and paraffins. Today, RMOTC's test facility consists of five individual loop

488

Holographic supersymmetric membrane flows  

Science Journals Connector (OSTI)

The M-theory lift of SU(3) ? U(1)R-invariant RG flow via a combinatorical use of the four-dimensional flow and 11-dimensional Einstein–Maxwell equations was found previously. By taking the three internal coordinates differently and preserving only the SU(3) symmetry from the CP2 space, we find a new 11-dimensional solution of the SU(3)-invariant RG flow interpolating from the SO(8)-invariant UV fixed point to the SU(3) ? U(1)R-invariant IR fixed point in four dimensions. We describe how the corresponding three-dimensional superconformal Chern–Simons matter theory deforms. By replacing the above CP2 space with the Einstein–Kahler twofold, we also find out a new 11-dimensional solution of the SU(2) ? U(1)-invariant RG flow connecting the above two fixed points in four dimensions.

Changhyun Ahn; Kyungsung Woo

2010-01-01T23:59:59.000Z

489

Optical flow switching  

E-Print Network (OSTI)

Present-day networks are being challenged by dramatic increases in bandwidth demand of emerging applications. We will explore a new transport, ldquooptical flow switchingrdquo, that will enable significant growth and ...

Chan, Vincent W. S.

490

Olefin Autoxidation in Flow  

E-Print Network (OSTI)

Handling hazardous multiphase reactions in flow brings not only safety advantages but also significantly improved performance, due to better mass transfer characteristics. In this paper, we present a continuous microreactor ...

Neuenschwander, Ulrich

491

Corrosion in Non-Hermetic Microelectronic Devices  

SciTech Connect

Many types of integrated and discrete microelectronic devices exist in the enduring stockpile. In the past, most of these devices have used conventional ceramic hermetic packaging (CHP) technology. Sometime in the future, plastic encapsulated microelectronic (PEM) devices will almost certainly enter the inventory. In the presence of moisture, several of the aluminum-containing metallization features common to both types of packaging become susceptible to atmospheric corrosion (Figure 1). A breach in hermeticity (e.g., due to a crack in the ceramic body or lid seal) could allow moisture and/or contamination to enter the interior of a CHP device. For PEM components, the epoxy encapsulant material is inherently permeable to moisture. A multi-year project is now underway at Sandia to develop the knowledge base and analytical tools needed to quantitatively predict the effect of corrosion on microelectronic performance and reliability. The issue of corrosion-induced failure surfaced twice during the past year because cracks were found in their ceramic bodies of two different CHP devices: the SA371 1/3712 MOSFET and the SA3935 ASIC (acronym for A Simple Integrated Circuit). Because of our inability to perform a model-based prediction at that time, the decision was made to determine the validity of the corrosion concern for these specific situations by characterizing the expected environment and assessing its relative degree of corrosivity. The results of this study are briefly described in this paper along with some of the advancements made with the predictive model development.

Braithwaite, J.W.; Sorensen, N.R.

1999-03-16T23:59:59.000Z

492

Laser focus compensating sensing and imaging device  

DOE Patents (OSTI)

A laser focus compensating sensing and imaging device permits the focus of a single focal point of different frequency laser beams emanating from the same source point. In particular it allows the focusing of laser beam originating from the same laser device but having differing intensities so that a low intensity beam will not convert to a higher frequency when passing through a conversion crystal associated with the laser generating device. The laser focus compensating sensing and imaging device uses a Cassegrain system to fold the lower frequency, low intensity beam back upon itself so that it will focus at the same focal point as a high intensity beam. An angular tilt compensating lens is mounted about the secondary mirror of the Cassegrain system to assist in alignment. In addition cameras or CCD's are mounted with the primary mirror to sense the focused image. A convex lens is positioned co-axial with the Cassegrain system on the side of the primary mirror distal of the secondary for use in aligning a target with the laser beam. A first alternate embodiment includes a Cassegrain system using a series of shutters and an internally mounted dichroic mirror. A second alternate embodiment uses two laser focus compensating sensing and imaging devices for aligning a moving tool with a work piece.

Vann, C.S.

1993-08-31T23:59:59.000Z

493

Senergen Devices Inc | Open Energy Information  

Open Energy Info (EERE)

Senergen Devices Inc Senergen Devices Inc Jump to: navigation, search Name Senergen Devices Inc Place Fremont, California Zip 94538 Product Startup developing silicon materials technology for PV and other applications. Coordinates 44.2605°, -88.880509° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.2605,"lon":-88.880509,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

494

Novel Insertion Devices at the APS  

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

Agenda Insertion Device Workshop Thursday 5 Dec. 2002. Bldg. 402 E1100/1200 Click on link to see presentation slides. 8:50 .... Welcome J. Murray Gibson 9:00 .... Current APS Insertion Devices Roger Dejus 9:35 .... New Possibilities for IDs at the APS Shigemi Sasaki 10:10 .... Superconductiong Undulator Possibilities Bob Kustom . 10:30 .... Break . . 10:55 Superconductive cryogen-free in-vacuo undulators for storage rings Robert Rossmanith 11:10 .... A novel type of undulator Gopal Shenoy 11:30 .... APS storage ring considerations Nick Sereno/Glenn Decker . 12:00 .... Lunch . .... . Insertion Devices at other Sources 1:30 .... IDs elsewere I: ESRF Joel Chavanne 2:15 .... IDs elsewhere II: ELETTRA Bruno Diviacco . 3:00 .... Break . . .... . User Requirements and Desires 3:30 .... E. E. Alp (Inelastic X-ray scattering)

495

Advanced Electro-Optic Surety Devices  

SciTech Connect

The Advanced Electro-Optic Surety Devices project was initiated in march 1991 to support design laboratory guidance on electro-optic device packaging and evaluation. Sandia National Laboratory requested AlliedSignal Inc., Kansas City Division (KCD), to prepare for future packaging efforts in electro-optic integrated circuits. Los Alamos National Laboratory requested the evaluation of electro-optic waveguide devices for nuclear surety applications. New packaging techniques involving multiple fiber optic alignment and attachment, binary lens array development, silicon V-groove etching, and flip chip bonding were requested. Hermetic sealing of the electro-optic hybrid and submicron alignment of optical components present new challenges to be resolved. A 10-channel electro-optic modulator and laser amplifier were evaluated for potential surety applications.

Watterson, C.E.

1997-05-01T23:59:59.000Z

496

Elliptically polarizing adjustable phase insertion device  

DOE Patents (OSTI)

An insertion device for extracting polarized electromagnetic energy from a beam of particles is disclosed. The insertion device includes four linear arrays of magnets which are aligned with the particle beam. The magnetic field strength to which the particles are subjected is adjusted by altering the relative alignment of the arrays in a direction parallel to that of the particle beam. Both the energy and polarization of the extracted energy may be varied by moving the relevant arrays parallel to the beam direction. The present invention requires a substantially simpler and more economical superstructure than insertion devices in which the magnetic field strength is altered by changing the gap between arrays of magnets. 3 figures.

Carr, R.

1995-01-17T23:59:59.000Z

497

Multi-Device Knob Utility for LCLS  

SciTech Connect

At the SLAC National Accelerator Laboratory (SLAC) the Controls Department (CD) has developed a new Multi-Device Knob Utility (MKB) based on the Experimental Physics and Industrial Control System (EPICS) toolkit for controlling one or more Process Variables (PVs) in unison, or simultaneously, from a physical knob located in the control room, or from various software tools such as the EPICS Extensible Display Manager (EDM) or a Swing slider in Java. A group of devices are hooked up to a knob, and then the value written to the devices is a simple function of the value of the knob. This is used, most commonly, to create a bump in the electron beam for the Linac Coherent Light Source (LCLS). Control system variables typically controlled are magnetic fields, phases, and timing offsets. This paper describes the technologies used to implement this utility.

Zelazny, Michael; Chevtsov, Sergei; Chu, Chungming Paul; Fairley, Diane; Krejcik, Patrick; Rogind, Deborah; Smith, Howard; White, Greg; Yocky, Gerald; /SLAC

2009-12-09T23:59:59.000Z

498

Photochromic, electrochromic, photoelectrochromic and photovoltaic devices  

DOE Patents (OSTI)

A light activated photoelectrochromic device is formed of a two-component system formed of a photoactive charge carrier generating material and electrochromic material (plus an elecrolyte). Light interacts with a semiconductive material to generate hole-electron charge carriers which cause a redox reaction in the electrochromic material. One device is formed of hydrated nickel oxide as the electrochromic layer and polycrystalline titanium dioxide as the charge generating material. The materials may be formed as discrete layers or mixed together. Because of the direct charge transfer between the layers, a circuit to apply a voltage to drive the electrochromic reaction is not required, although one can be used to enhance the reaction. The hydrated nickel oxide-titanium dioxide materials can also be used to form a photovoltaic device for generating electricity.

Kostecki, Robert (Lafayette, CA); McLarnon, Frank R. (Orinda, CA)

2000-01-01T23:59:59.000Z

499

Planar Energy Devices | Open Energy Information  

Open Energy Info (EERE)

Planar Energy Devices Planar Energy Devices Jump to: navigation, search Name Planar Energy Devices Place Orlando, Florida Zip 32805 Sector Renewable Energy Product Developer thin-film battery technology as a spin-out of the National Renewable Energy Laboratory. Coordinates 28.538235°, -81.377389° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":28.538235,"lon":-81.377389,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

500

Luminus Devices Inc | Open Energy Information  

Open Energy Info (EERE)

Luminus Devices Inc Luminus Devices Inc Jump to: navigation, search Name Luminus Devices Inc Address 1100 Technology Park Drive Place Billerica, Massachusetts Zip 01821 Sector Efficiency Product Develops and manufactures LEDs Website http://www.luminus.com/ Coordinates 42.528635°, -71.278022° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.528635,"lon":-71.278022,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}