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


1

A SOLAR STILL AUGMENTED WITH A FLAT-PLATE COLLECTOR AND A REFLECTOR  

E-Print Network [OSTI]

A SOLAR STILL AUGMENTED WITH A FLAT-PLATE COLLECTOR AND A REFLECTOR A. Saleh A. Badran Mechanical ­ Jordan Amman ­ Jordan e-mail: asaleh@philadelphia.edu.jo e-mail: badran@ju.edu.jo ABSTRACT A solar distillation system was built and tested to study the effect of increasing the solar radiation incident

2

Review of solar thermoelectric energy conversion and analysis of a two cover flat-plate solar collector  

E-Print Network [OSTI]

The process of solar thermoelectric energy conversion was explored through a review of thermoelectric energy generation and solar collectors. Existing forms of flat plate collectors and solar concentrators were surveyed. ...

Hasan, Atiya

2007-01-01T23:59:59.000Z

3

Optimal arrangement of structural and functional parts in a flat plate integrated collector storage solar water heater (ICSSWH)  

SciTech Connect (OSTI)

Parameters that affect the efficiency of a flat plate integrated collector storage solar water heater (ICSSWH) are examined experimentally and numerically. This specific ICSSWH contains water that is not refreshed. The service water is heated indirectly through an immersed heat exchanger (HE) in contact with the front and back major surfaces. A forced convection mechanism consisting of a pump that brings the storage water into motion by recirculation is used for heat transfer intensification. The two major (front and back) flat plate surfaces need to be well interconnected so that they are not deformed by the weight of the contained water and the exerted high-pressure. Two main factors that influence the performance are optimized: the position and size of the recirculation ports and the arrangement and size of the interconnecting fins. Both factors are explored to maximize the velocity flow field of the recirculated storage water. Consequently, the heat transfer rate between the two water circuits is maintained at high levels. Various 3D computational fluid dynamics (CFD) models are developed using the FLUENT package. An experimental model, made by Plexiglas, is used for the visualization of the flow field. Flow velocities are measured using a laser doppler velocimetry (LDV) system. The optimal arrangement increases the mean storage water velocity by 65% and raises the outlet temperatures up to 8 C. (author)

Gertzos, K.P.; Caouris, Y.G. [Department of Mechanical Engineering and Aeronautics, University of Patras, 265 00 Patras (Greece)

2008-04-15T23:59:59.000Z

4

A mathematical model for the performance of the compressed-film, floating-deck, flat-plate solar-energy collector  

E-Print Network [OSTI]

A MATHEMATICAL MODEL FOR THE PERFORMANCE OP THE COMFR. . 'SSED-FILM PLOATING-DECK, PLAT-PLATE SOLAR-ENERGY COLI CTOR A Thesis HO-KAI CHAN Submitted to the Graduate Co1lege of Texas A&M University in partial fulfillment of 0he requirement... for the degree of FiASTER OP SCIENCE August 197~ MaJor SubJect: Chemical Engineering A MATHEMATICAL MODEL FOR THE PERFORMANCE OF THE COMPRESSED-FILM, FLOATING-DECK~ PLAT-PLATE SOLAR-ENERGY COLLECTOR A Thesis by HO-KAI CHAN Approved as to style...

Chan, Ho-Kai

1975-01-01T23:59:59.000Z

5

Flat-Plate Photovoltaic Module Basics  

Broader source: Energy.gov [DOE]

Flat-plate photovoltaic (PV) modules are made of several components, including the front surface materials, encapsulant, rear surface, and frame.

6

METAL FOILS FOR DIRECT APPLICATION OF ABSORBER COATINGS ON SOLAR COLLECTORS  

E-Print Network [OSTI]

Sputtering for Depositing Solar Collector Coatings".AES Coatings for Solar Collectors Symposium. Atlanta. Ga.Surfaces on Flat Plate Solar Collectors". Proceedings of 2nd

Lampert, Carl M.

2011-01-01T23:59:59.000Z

7

METAL FOILS FOR DIRECT APPLICATION OF ABSORBER COATINGS ON SOLAR COLLECTORS  

E-Print Network [OSTI]

Surfaces on Flat Plate Solar Collectors". Proceedings of 2ndfor Depositing Solar Collector Coatings i i Proceedings ofAES Coatings for Solar Collectors Symposium. Atlanta. Ga.

Lampert, Carl M.

2011-01-01T23:59:59.000Z

8

SELECTIVE ABSORBER COATED FOILS FOR SOLAR COLLECTORS  

E-Print Network [OSTI]

of 1977 Flat Plate Solar Collector Conference- USDOE," Wash.Second Coatings for Solar Collectors Symp. , 11 Winter Park,assuming the finisher and the collector manufacturer are not

Lampert, Carl M.

2013-01-01T23:59:59.000Z

9

EVALUATION OF FLAT-PLATE PHOTOVOLTAIC THERMAL HYBRID SYSTEMS FOR SOLAR ENERGY UTILIZATION.  

SciTech Connect (OSTI)

The technical and economic attractiveness of combined photovoltaic/thermal (PV/T) solar energy collectors was evaluated. The study was limited to flat-plate collectors since concentrating photovoltaic collectors require active cooling and thus are inherently PV/T collectors, the only decision being whether to use the thermal energy or to dump it. it was also specified at the outset that reduction in required roof area was not to be used as an argument for combining the collection of thermal and electrical energy into one module. Three tests of economic viability were identified, all of which PV/T must pass if it is to be considered a promising alternative: PV/T must prove to be competitive with photovoltaic-only, thermal-only, and side-by-side photovoltaic-plus-thermal collectors and systems. These three tests were applied to systems using low-temperature (unglazed) collectors and to systems using medium-temperature (glazed) collectors in Los Angeles, New York, and Tampa. For photovoltaics, the 1986 DOE cost goals were assumed to have been realized, and for thermal energy collection two technologies were considered: a current technology based on metal and glass, and a future technology based on thin-film plastics. The study showed that for medium-temperature applications PV/T is not an attractive option in any of the locations studied. For low-temperature applications, PV/T appears to be marginally attractive.

ANDREWS,J.W.

1981-06-01T23:59:59.000Z

10

Film cooling on a flat plate: investigating density  

E-Print Network [OSTI]

This study is an investigation of two specific effects on turbine blade film cooling. The effect of coolant to mainstream density ratio and upstream steps was studied. The studies were conducted on two flat plates with 4mm cylindrical film cooling...

Grizzle, Joshua Peter Fletcher

2009-05-15T23:59:59.000Z

11

Evaluation of tracking flat plate and concentrator PV systems  

SciTech Connect (OSTI)

Arizona Public Service Company has conducted side-by-side field tests of most of the leading tracking flat plate and concentrating PV technologies. The results verify the added value due to tracking, but show that additional reliability improvements are needed in most cases. Concentrator PV systems can be high performers in sunny regions. In addition, a novel inverter system design by Raytheon has demonstrated excellent performance and promises to be more reliable and have lower cost than competing technologies.

Lepley, T. [Phasor Energy Co., Phoenix, AZ (United States); Hammond, B.; Harris, A. [Arizona State Univ., Tempe, AZ (United States)

1997-12-31T23:59:59.000Z

12

Distributed Roughness Receptivity in a Flat Plate Boundary Layer  

E-Print Network [OSTI]

- Distributed Receptivity . . . . . 6 2. FACILITY DESCRIPTION - THE KLEBANOFFSARIC WIND TUNNEL 11 2.1 Test Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2 Fan and Motor... of this dissertation describes the KlebanoffSaric Wind Tunnel facility, which was used for this experiment. Section 3 describes the experimental setup (roughness design and the flat plate model) and defines the metrics by which the flow field is decomposed...

Kuester, Matthew Scott

2014-04-18T23:59:59.000Z

13

Wind loading on solar collectors  

SciTech Connect (OSTI)

The present design methodology for the determination of wind loading on the various solar collectors has been reviewed and assessed. The total force coefficients of flat plates of aspect ratios 1.0 and 3.0, respectively, at various angles of attack obtained by using the guidelines of the ANSI A58.1-1982, have been compared with those obtained by using the methodology of the ASCE Task Committee, 1961, and the experimental results of the full-scale test of heliostats by Peglow. The turbulent energy spectra, currently employed in the building code, are compared with those of Kaimal et al., Lumley, and Ponofsky for wind velocities of 20.0 m/s and 40.24 m/s at an elevation of 9.15 m. The longitudinal spectra of the building code overestimates the Kaimal spectra in the frequency range of 0.007 Hz to 0.08 Hz and underestimates beyond the frequency of 0.08 Hz. The peak angles of attack, on the heliostat, stowed in horizontal position, due to turbulent vertical and lateral components of wind velocity, have been estimated by using Daniel's methodology for three wind velocities and compared with the value suggested by the code. The experimental results of a simple test in the laboratory indicate the feasibility of decreasing the drag forces of the flat plate by reducing the solidity ratio.

Bhaduri, S.; Murphy, L.M.

1985-06-01T23:59:59.000Z

14

Tracking system for solar collectors  

DOE Patents [OSTI]

A tracking system is provided for pivotally mounted spaced-apart solar collectors. A pair of cables is connected to spaced-apart portions of each collector, and a driver displaces the cables, thereby causing the collectors to pivot about their mounting, so as to assume the desired orientation. The collectors may be of the cylindrical type as well as the flat-plate type. Rigid spar-like linkages may be substituted for the cables. Releasable attachments of the cables to the collectors is also described, as is a fine tuning mechanism for precisely aligning each individual collector.

Butler, B.

1980-10-01T23:59:59.000Z

15

Tracking system for solar collectors  

DOE Patents [OSTI]

A tracking system is provided for pivotally mounted spaced-apart solar collectors. A pair of cables is connected to spaced-apart portions of each collector, and a driver displaces the cables, thereby causing the collectors to pivot about their mounting, so as to assume the desired orientation. The collectors may be of the cylindrical type as well as the flat-plate type. Rigid spar-like linkages may be substituted for the cables. Releasable attachments of the cables to the collectors is also described, as is a fine tuning mechanism for precisely aligning each individual collector.

Butler, Barry L. (Golden, CO)

1984-01-01T23:59:59.000Z

16

Wave interaction with a fixed vertical flat plate  

E-Print Network [OSTI]

. Hydrofoil definition sketch. The sharp-edged gust problem and the problem of a step-wise cnange in the velocity perpendicular to the foil offers insight into the response of a foil subject to an oscillating fluid. A sharp-edged gust with an initial... forces on a thin flat plate with a standard hydrofoil thickness was determined experimentally in a two-dimensional wave tank. Non-dimensional parameters were plotted and used to evaluate the data. It was shown that lift can be generated on a flat...

Glover, Lanny Bruce

1985-01-01T23:59:59.000Z

17

System Advisor Model: Flat Plate Photovoltaic Performance Modeling Validation Report  

SciTech Connect (OSTI)

The System Advisor Model (SAM) is a free software tool that performs detailed analysis of both system performance and system financing for a variety of renewable energy technologies. This report provides detailed validation of the SAM flat plate photovoltaic performance model by comparing SAM-modeled PV system generation data to actual measured production data for nine PV systems ranging from 75 kW to greater than 25 MW in size. The results show strong agreement between SAM predictions and field data, with annualized prediction error below 3% for all fixed tilt cases and below 8% for all one axis tracked cases. The analysis concludes that snow cover and system outages are the primary sources of disagreement, and other deviations resulting from seasonal biases in the irradiation models and one axis tracking issues are discussed in detail.

Freeman, J.; Whitmore, J.; Kaffine, L.; Blair, N.; Dobos, A. P.

2013-12-01T23:59:59.000Z

18

FLAT PLATE HEAT PIPES: FROM OBSERVATIONS TO THE MODELING OF THE CAPILLARY STUCTURE  

E-Print Network [OSTI]

1 FLAT PLATE HEAT PIPES: FROM OBSERVATIONS TO THE MODELING OF THE CAPILLARY STUCTURE Frédéric ABSTRACT This paper presents a synthesis of observations made inside six different flat plate heat pipes to estimate the performance of the heat pipe in a real application with several electronic components

Paris-Sud XI, Université de

19

Solar Radiation Data Manual for Flat-Plate and Concentrating...  

Office of Scientific and Technical Information (OSTI)

latitude, and latitude plus 15. These trackers pivot on their single axis to track the sun, facing east in the morning and west in the afternoon. Large collectors can use an axis...

20

Solar collector  

DOE Patents [OSTI]

The field of this invention is solar collectors, and more particularly, the invention pertains to a flat plate collector that employs high performance thin films. The solar collector of this invention overcomes several problems in this field, such as excessive hardware, cost and reliability, and other prior art drawbacks outlined in the specification. In the preferred form, the apparatus features a substantially rigid planar frame (14). A thin film window (42) is bonded to one planar side of the frame. An absorber (24) of laminate construction is comprised of two thin film layers (24a, 24b) that are sealed perimetrically. The layers (24a, 24b) define a fluid-tight planar envelope (24c) of large surface area to volume through which a heat transfer fluid flows. Absorber (24) is bonded to the other planar side of the frame. The thin film construction of the absorber assures substantially full envelope wetting and thus good efficiency. The window and absorber films stress the frame adding to the overall strength of the collector.

Wilhelm, William G. (Cutchogue, NY)

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

An experimental investigation of certain flat plates loaded in torsion with end restraint  

E-Print Network [OSTI]

and deflections of flat plates loaded in torsion are oonsidered. Plates of width-Chiohess ratios of 8, 10, 12 and 14 and length- width ratios of 1, 2 ~ 4 and 6 are used Theoretical and expsrinental stress and defleotion ourves are plottedi Sartloular... require high struotural solidities. Ls a result a flat plate nay be used to sienlate wing struotural problens ~ 1 Theoretioal solutions ~ ~ for the stresses and defleotions of flat plates with torsional loads ellninate the effeots of end restraint by as...

Hamner, Bennett Barron

1953-01-01T23:59:59.000Z

22

Experimental Investigations of Vortex Induced Vibration of A Flat Plate in Pitch Oscillation  

E-Print Network [OSTI]

A bluff structure placed in a flowing fluid, may be subjected to vortex-induced vibrations (VIV). For a flat plate with only rotational degree of freedom, the VIV is rotational oscillation. Based on the experimental investigation, vortex...

Yang, Yi

2012-02-14T23:59:59.000Z

23

Design of Flat-Plate Dehumidifiers for HumidificationDehumidification Desalination Systems  

E-Print Network [OSTI]

Flat-plate heat exchangers are examined for use as dehumidifiers in humidificationdehumidification (HDH) desalination systems. The temperature and humidity ratio differences that drive mass transfer are considerably higher ...

Sievers, Martin

24

Heat Transfer -2 A heat generating ( ) flat plate fuel element of thickness 2L is covered with flat plate steel cladding of  

E-Print Network [OSTI]

with flat plate steel cladding of thickness b. The heat generated is removed by a fluid at T, which adjoins on both sides On the sketch show regions where dT/dx is zero, constant and increasing. T , h x LL bb SteelSteel

Virginia Tech

25

Solar Radiation Data Manual for Flat-Plate and Concentrating Collectors  

Office of Scientific and Technical Information (OSTI)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformation In closing, an overarchingInformation science.govInformation* - '

26

Desiccant cooling using unglazed transpired solar collectors  

SciTech Connect (OSTI)

The use of unglazed solar collectors for desiccant regeneration in a solid desiccant cooling cycle was investigated because these collectors are lower in cost than conventional glazed flat-plate collectors. Using computer models, the performance of a desiccant cooling ventilation cycle integrated with either unglazed transpired collectors or conventional glazed flat-plate collectors was obtained. We found that the thermal performance of the unglazed system was lower than the thermal performance of the glazed system because the unglazed system could not take advantage of the heat of adsorption released during the dehumidification process. For a 3-ton cooling system, although the area required for the unglazed collector was 69% more than that required for the glazed collector, the cost of the unglazed collector array was 44% less than the cost of the glazed collector array. The simple payback period of the unglazed system was half of the payback period of the glazed collector when compared to an equivalent gas-fired system. Although the use of unglazed transpired collectors makes economic sense, some practical considerations may limit their use in desiccant regeneration. 8 refs.

Pesaran, A.A. (National Renewable Energy Lab., Golden, CO (United States)); Wipke, K. (Stanford Univ., CA (United States))

1992-05-01T23:59:59.000Z

27

Friction factor data for flat plate tests of smooth and honeycomb surfaces  

E-Print Network [OSTI]

are needed. The purpose of this report is to present the air flow friction factor data for honeycomb surfaces (i.e., 1.57 mm, 0.79 mm and 0.51 mm in cell width, 3.81 mm and 2.29 mm in cell depth) with a flat plate tester. The flat plate tester is designed....2bar, and 17.9bar, respectively and 3 clearances between honeycombs which are 0.25mm, 0.38mm and 0.51mm. These clearance values are representative of actual seals used in the turbomachinary. The following questions wil l be answered: 1) Does...

Ha, Tae Woong

1989-01-01T23:59:59.000Z

28

Dynamic pressure response of water flow between closely spaced roughened flat plates  

E-Print Network [OSTI]

of MASTER OF SCIENCE May 1993 Major Subject: Mechanical Engineering DYNAMIC PRESSURE RESPONSE OF WATER FLOW BETWEEN CLOSELY SPACED ROUGHENED FLAT PLATES A Thesis by JOHN CHARLES HESS Approved as to style and content by: Robert E. DeOtte, Jr. (Co.... S. , Texas A&M University Co-Chairs of Advisory Committee: Dr. R. E. DeOtte, Jr, Dr. G, L, Morrison A flat plate tester was designed and built to determine friction factors and dynamic pressures for water flow over smooth, knurl, and cavity...

Hess, John Charles

2012-06-07T23:59:59.000Z

29

Heat Transfer -1 A satellite in space orbits the sun. The satellite can be approximated as a flat plate with  

E-Print Network [OSTI]

Heat Transfer - 1 A satellite in space orbits the sun. The satellite can be approximated as a flat plate with dimensions and properties given below. (a) Calculate the solar heat flux (W/m2 is at a distance where the solar heat flux (as defined above) is 500 W/m2 , and the flat plate is oriented

Virginia Tech

30

Proceedings of the flat-plate solar array project research forum on photovoltaic metallization systems  

SciTech Connect (OSTI)

A Photovoltaic Metallization Research Forum, under the sponsorship of the Jet Propulsion Laboratory's Flat-Plate Solar Array Project and the US Department of Energy, was held March 16-18, 1983 at Pine Mountain, Georgia. The Forum consisted of five sessions, covering (1) the current status of metallization systems, (2) system design, (3) thick-film metallization, (4) advanced techniques and (5) future metallization challenges. Twenty-three papers were presented.

None

1983-11-15T23:59:59.000Z

31

The distortion of a uniform flow field due to a finite flat plate  

E-Print Network [OSTI]

Advantages of the Application of the Complete Navier-Stokes Equations Synopsis II ANALYSIS The Physical Model The Mathematical Model Governing Differential Fquations Initial and Boundary Conditions 10 III METHOD OF SOLUTION 19 General Method... INTRODUCTION Pur ose and Sco e The purpose of this study is to apply numerical methods to solve the exact partial differential equations governing viscous fluid flow past a finite flat plate. The flow condition studied is that of time-dependent, two...

Zull, Lawrence Michael

1970-01-01T23:59:59.000Z

32

Preliminary Measurements From A New Flat Plate Facility For Aerodynamic Research  

SciTech Connect (OSTI)

This paper details the design and preliminary measurements used in the characterisation of a new flat plate research facility. The facility is designed specifically to aid in the understanding of entropy generation throughout the boundary layer with special attention given to non-equilibrium flows. Hot-wire measurements were obtained downstream of two turbulence generating grids. The turbulence intensity, integral and dissipation length scale ranges measured are 1.6%-7%, 5mm-17mm and 0.7mm-7mm, respectively. These values compared well to existing correlations. The flow downstream of both grids was found to be homogenous and isotropic. Flow visualisation is employed to determine aerodynamic parameters such as flow 2-dimensionality and the effect of the flap angle on preventing separation at the leading edge. The flow was found to be 2-dimensional over all measurement planes. The non-dimensional pressure distribution of a modern turbine blade suction surface is simulated on the flat plate through the use of a variable upper wall. The Reynolds number range based on wetted plate length and inlet velocity is 70,000-4,000,000.

D. M. McEligot; D. W. Nigg; E. J. Walsh; D. Hernon; M.R.D. Davies

2005-03-01T23:59:59.000Z

33

Yearly average performance of the principal solar collector types  

SciTech Connect (OSTI)

The results of hour-by-hour simulations for 26 meteorological stations are used to derive universal correlations for the yearly total energy that can be delivered by the principal solar collector types: flat plate, evacuated tubes, CPC, single- and dual-axis tracking collectors, and central receiver. The correlations are first- and second-order polynomials in yearly average insolation, latitude, and threshold (= heat loss/optical efficiency). With these correlations, the yearly collectible energy can be found by multiplying the coordinates of a single graph by the collector parameters, which reproduces the results of hour-by-hour simulations with an accuracy (rms error) of 2% for flat plates and 2% to 4% for concentrators. This method can be applied to collectors that operate year-around in such a way that no collected energy is discarded, including photovoltaic systems, solar-augmented industrial process heat systems, and solar thermal power systems. The method is also recommended for rating collectors of different type or manufacturer by yearly average performance, evaluating the effects of collector degradation, the benefits of collector cleaning, and the gains from collector improvements (due to enhanced optical efficiency or decreased heat loss per absorber surface). For most of these applications, the method is accurate enough to replace a system simulation.

Rabl, A.

1981-01-01T23:59:59.000Z

34

Analytical model and performance data for a cylindrical parabolic collector  

SciTech Connect (OSTI)

Concentrating solar collectors provide higher fluid temperatures than flat-plate, an important advantage in many applications. The parabolic cylinder is one of the most popular types of concentrating collectors because of its relatively simple construction and tracking configuration. A mathematical model was developed for one such collector in order to predict thermal efficiency as a function of solar insolation. An experiment was then devised in an attempt to verify this model. Discrepancies between predicted and observed values are discussed, and suggestions are made for improving the model and the experimental procedure.

Ford, F.M.; Stewart, W.E. Jr.

1980-01-01T23:59:59.000Z

35

Measurements of Conversion Efficiency for a Flat Plate Thermophotovoltaic System Using a Photonic Cavity Test System  

SciTech Connect (OSTI)

The performance of a 1 cm{sup 2} thermophotovoltaic (TPV) module was recently measured in a photonic cavity test system. A conversion efficiency of 11.7% was measured at a radiator temperature of 1076 C and a module temperature of 29.9 C. This experiment achieved the highest direct measurement of efficiency for an integrated TPV system. Efficiency was calculated from the ratio of the peak (load matched) electrical power output and the heat absorption rate. Measurements of these two parameters were made simultaneously to assure the validity of the measured efficiency value. This test was conducted in a photonic cavity which mimicked a typical flat-plate TPV system. The radiator was a large, flat graphite surface. The module was affixed to the top of a copper pedestal for heat absorption measurements. The heat absorption rate was proportional to the axial temperature gradient in the pedestal under steady-state conditions. The test was run in a vacuum to eliminate conductive and convective heat transfer mechanisms. The photonic cavity provides the optimal test environment for TPV efficiency measurements because it incorporates all important physical phenomena found in an integrated TPV system: high radiator emissivity and blackbody spectral shape, photon recycling, Lambertian distribution of incident radiation and complex geometric effects. Furthermore, the large aspect ratio between radiating surface area and radiator/module spacing produces a view factor approaching unity with minimal photon leakage.

E.J. Brown; C.T. Ballinger; S.R. Burger; G.W. Charache; L.R. Danielson; D.M. DePoy; T.J. Donovan; M. LoCascio

2000-05-30T23:59:59.000Z

36

Design of a photovoltaic central power station: flat-plate array  

SciTech Connect (OSTI)

A design for a photovoltaic central power station using fixed flat-panel arrays has been developed. The 100 MW plant is assumed to be located adjacent to the Saguaro Power Station of Arizona Public Service. The design assumes high-efficiency photovoltaic modules using dendritic web cells. The modules are arranged in 5 MW subfields, each with its own power conditioning unit. The photovoltaic output is connected to the existing 115 kV utility switchyard. The site specific design allows detailed cost estimates for engineering, site preparation, and installation. Collector and power conditioning costs have been treated parametrically.

Not Available

1984-02-01T23:59:59.000Z

37

Concentrating collectors  

SciTech Connect (OSTI)

Selected specifications from sixteen concentrating collector manufacturers are tabulated. Eleven are linear parabolic trough collectors, and the others include slats, cylindrical trough, linear Fresnel lens, parabolic cylindrical Fresnel lens, and two point focus parabolic dish collectors. Also included is a brief discussion of the operating temperatures and other design considerations for concentrating collectors. (LEW)

Not Available

1981-06-01T23:59:59.000Z

38

An analytical model and performance data for a cylindrical parabolic collector  

SciTech Connect (OSTI)

Concentrating solar collectors provide higher fluid temperatures than flat-plate, an important advantage in many applications. The parabolic cylinder is one of the most popular types of concentrating collectors because of its relatively simple construction and tracking configuration. A mathematical model was developed for one such collector in order to predict thermal efficiency as a function of solar insolation. An experiment was then devised in an attempt to verify this model. Discrepancies between predicted and observed values are discussed, and suggestions are made for improving the model and the experimental procedure.

Ford, F.M.; Stewart, W.E.

1980-12-01T23:59:59.000Z

39

Heat collector  

DOE Patents [OSTI]

A heat collector and method suitable for efficiently and cheaply collecting solar and other thermal energy are provided. The collector employs a heat pipe in a gravity-assist mode and is not evacuated. The collector has many advantages, some of which include ease of assembly, reduced structural stresses on the heat pipe enclosure, and a low total materials cost requirement. Natural convective forces drive the collector, which after startup operates entirely passively due in part to differences in molecular weights of gaseous components within the collector.

Merrigan, Michael A. (Santa Cruz, NM)

1984-01-01T23:59:59.000Z

40

Heat collector  

DOE Patents [OSTI]

A heat collector and method suitable for efficiently and cheaply collecting solar and other thermal energy are provided. The collector employs a heat pipe in a gravity-assist mode and is not evacuated. The collector has many advantages, some of which include ease of assembly, reduced structural stresses on the heat pipe enclosure, and a low total materials cost requirement. Natural convective forces drive the collector, which after startup operates entirely passively due in part to differences in molecular weights of gaseous components within the collector.

Merrigan, M.A.

1981-06-29T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

40th Fluid Dynamics Conference and Exhibit, 28 Jun -1 Jul 2010, Chicago, Illinois Transition of hypersonic flow past flat plate with  

E-Print Network [OSTI]

of hypersonic flow past flat plate with roughness elements Prahladh S Iyer , Suman Muppidi and Krishnan Mahesh and Astronautics #12;I. Introduction Studying laminar-turbulent transition in supersonic and hypersonic boundary-turbulent transition.2 Schneider3 gives a comprehensive review of the effects of roughness on hypersonic boundary layer

Mahesh, Krishnan

42

Self-Sustaining Process through Streak Generation in a Flat-Plate Boundary Layer Thomas Duriez, Jean-Luc Aider, and Jose Eduardo Wesfreid  

E-Print Network [OSTI]

Self-Sustaining Process through Streak Generation in a Flat-Plate Boundary Layer Thomas Duriez July 2009; published 28 September 2009) The existence of a self-sustaining process between streamwise-bounded turbulence. The existence of a self- sustaining process (SSP) between these two flow structures has been

Wesfreid, José Eduardo

43

The effect of tangential mass addition on the boundary layer velocity distribution of a flat plate at zero angle of attack  

E-Print Network [OSTI]

. V . RESULTS AND DISCUSSION 16 18 20 21 24 Boundary Layer Conditions Downstream of Blowing Slot . Boundary Layer Conditions Upstream of Slot Accuracy of Data 24 40 47 VI. CONCLUSIONS AND RECOMMENDATIONS ~ 51 LITERATURE CITED 54 APPENDIX... 55 Estimation of Error Caused by Leaks in the Pressure Measuring System 56 LIST OF FIGURES Figure Page 3" x 48" Smoke Tunnel 2. Flat Plate Model 3. Schematic of Pressure System 4. Volume Flow Rates of Working Pipe Tap Orifice 14 Variation...

Miller, Edward Peter

2012-06-07T23:59:59.000Z

44

Multi-collector Single-collector  

E-Print Network [OSTI]

Multi-collector ICP-MS Single-collector ICP-MS 50 m Olivine Glass 50 m Epoxy Olivine Glass Opx Monitor Plates Electrostatic Analyzer Magnet Zoom Lens Collector Array Defining Slit Earth Guard Map Filter Electron Multiplier Nu Plasma Collector Schematic (not to scale) Collector Assembly 20 micron spot

Mcdonough, William F.

45

An experimental investigation of the rolling moment on a flat plate in the presence of a free vortex of known strength  

E-Print Network [OSTI]

AN EXPERIMENTAL 1NVES1'IGATION OF THE ROLLING MOMENT ON A ILAT PLATE IN THE ?RESENCE OP A FREE VORTEX OF KNOWN STRENGTH A Thesis by MAURICE VERNE VAN DUSEN, JR. Submitted to the Graduate College of Teras A&M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE May 1970 Major Subject: Aerospace Engineering EXPERIMENTAL INVESTIGATION OF THE ROLLING MOMENT ON A FLAT PLATE IN THE PRESENCE OF A FREE VORTEX OF KNONN STRENGTH A Thesis by MAURICE VERNE VAN DUSEN, JR...

Van Dusen, Maurice Verne

2012-06-07T23:59:59.000Z

46

Solar collector  

SciTech Connect (OSTI)

A solar collector unit comprises a body of rigid thermally insulating material having a surface in the shape of about half a cylindrical parabola, the parabolic surface being provided with a reflective surface, a conduit being positioned with its long axis in the median plane of the parabola, said conduit serving as conduit for the heat-exchange medium, the surface of said conduit facing the parabolic surface being a selective surface, a transparent cover being provided on top of the device.

Dostrovsky, I.

1981-02-10T23:59:59.000Z

47

Convective currents in nucleate pool boiling and their effects on the heat flux from varying diameter flat plate heating elements  

E-Print Network [OSTI]

investigation was conducred to amine the effects of convection currents in nucleate oool boil ing and to determine the changes in critical heat flux caused by varying the diameter of horizontal flat olate heating surfaces. Freon 113 (Trichlorotrifluoroethane... by high energy costs and thc need to economize in industrial heat transfer applications . I'nucleate boiling is a very efficient neans of heat transfer because of the large sur ace areas involved in vaporization of the bulk fluid. as bubbles form...

Morford, Peter Stephen

1980-01-01T23:59:59.000Z

48

Ultracapacitor current collector  

DOE Patents [OSTI]

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

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

2001-10-16T23:59:59.000Z

49

Fraction Collector User Manual  

E-Print Network [OSTI]

Fraction Collector Frac-950 18-1139-56 User Manual #12;#12;Important user information All users Territories Hong Kong Copyright Amersham Biosciences AB 2002 - All rights reserved Fraction Collector Frac Fraction Collector Frac-950 User Manual 18-1139-56 Edition AE v Contents 1 Introduction 1.1 General

Pawlowski, Wojtek

50

Collector's problem Byron Schmuland  

E-Print Network [OSTI]

Collector's problem Byron Schmuland Department of Mathematical Sciences University of Alberta the mathematics of the collector's problem. For simplicity, let's assume that you buy cards one at a time, average doesn't mean typical. Some hockey card collectors will need to buy 1525 cards or so, but some

Schmuland, Byron

51

Internal absorber solar collector  

DOE Patents [OSTI]

Thin solar collecting panels are described made from arrays of small rod collectors consisting of a refracting dielectric rod lens with an absorber imbedded within it and a reflecting mirror coated on the back side of the dielectric rod. Non-tracking collector panels on vertical walls or roof tops receive approximately 90% of solar radiation within an acceptance zone 60.degree. in elevation angle by 120.degree. or more in the azimuth sectors with a collector concentration ratio of approximately 3.0. Miniaturized construction of the circular dielectric rods with internal absorbers reduces the weight per area of glass, plastic and metal used in the collector panels. No external parts or insulation are needed as heat losses are low due to partial vacuum or low conductivity gas surrounding heated portions of the collector. The miniature internal absorbers are generally made of solid copper with black selective surface and the collected solar heat is extracted at the collector ends by thermal conductivity along the absorber rods. Heat is removed from end fittings by use of liquid circulants. Several alternate constructions are provided for simplifying collector panel fabrication and for preventing the thermal expansion and contraction of the heated absorber or circulant tubes from damaging vacuum seals. In a modified version of the internal absorber collector, oil with temperature dependent viscosity is pumped through a segmented absorber which is now composed of closely spaced insulated metal tubes. In this way the circulant is automatically diverted through heated portions of the absorber giving higher collector concentration ratios than theoretically possible for an unsegmented absorber.

Sletten, Carlyle J. (106 Nagog Hill Rd., Acton, MA 01720); Herskovitz, Sheldon B. (88 Hammond St., Acton, MA 01720); Holt, F. S. (46 Emerson Rd., Winchester, MA 01890); Sletten, E. J. (Chestnut Hill Rd. R.F.D. Rte. #4, Amherst, NH 03031)

1981-01-01T23:59:59.000Z

52

Solar energy collector  

SciTech Connect (OSTI)

A solar energy collector is disclosed comprising a collector core located within a longitudinal parabolic reflector and formed of a series of spaced tubes exposed to the direct rays of the sun and to rays reflected by the reflector and arranged in a cylindrical array extending longitudinally to form a fluid path between two end annular manifolds connected at opposite ends of a storage tank located within the array.

Bale, N.R.

1983-11-22T23:59:59.000Z

53

subcollector Schottky collector contact & interconnect metals  

E-Print Network [OSTI]

base collector depletion layer subcollector ohmic metal (a) base collector depletion layer Schottky metal base emitter collector collector We emitter base emitter emitter We Wc Wc (b) Schottky collector contact & interconnect metals Emitter & collector Ohmics undoped collector depletion layer base N

Rodwell, Mark J. W.

54

SELECTIVE ABSORBER COATED FOILS FOR SOLAR COLLECTORS  

E-Print Network [OSTI]

fabrication of solar collector panels. adhesives and bondingdirectly to solar collector panels. the solar selectivefabrication of solar collector panels. However, the finish

Lampert, Carl M.

2013-01-01T23:59:59.000Z

55

Biological sample collector  

DOE Patents [OSTI]

A biological sample collector is adapted to a collect several biological samples in a plurality of filter wells. A biological sample collector may comprise a manifold plate for mounting a filter plate thereon, the filter plate having a plurality of filter wells therein; a hollow slider for engaging and positioning a tube that slides therethrough; and a slide case within which the hollow slider travels to allow the tube to be aligned with a selected filter well of the plurality of filter wells, wherein when the tube is aligned with the selected filter well, the tube is pushed through the hollow slider and into the selected filter well to sealingly engage the selected filter well and to allow the tube to deposit a biological sample onto a filter in the bottom of the selected filter well. The biological sample collector may be portable.

Murphy, Gloria A. (French Camp, CA)

2010-09-07T23:59:59.000Z

56

UBC Video Collection / Raymond J. Hall (collector)  

E-Print Network [OSTI]

UBC Video Collection / Raymond J. Hall (collector) Compiled by Christopher Hives (2011) University / Physical Description Collector's Biographical Sketch Custodial History Scope and Content Item List (collector). - 1992-2002. 30 video recordings. Collector's Biographical Sketch Raymond Hall came to Vancouver

Handy, Todd C.

57

The Mechanized Verification of Garbage Collector Implementations  

E-Print Network [OSTI]

Abstract The Mechanized Verification of Garbage Collector Implementations Andrew Evan Mc complex, requiring a garbage collector. Garbage collectors are becoming increasingly sophis- ticated to adapt them to high-performance, concurrent and real-time applications, making internal collector

58

Kuali Financial System Implementation Collector Interface Meeting  

E-Print Network [OSTI]

Kuali Financial System Implementation Collector Interface Meeting December 17, 2008 Presenters of the Kuali Financial System (KFS) Collector Interface Format Differences from FRS Answer your questions #12 Collector File collector

Stephens, Graeme L.

59

APEC Inquiry Collection (various collectors)  

E-Print Network [OSTI]

APEC Inquiry Collection (various collectors) Compiled by Jennifer Pecho (2008) University (various collectors). 1997-2001. 6.45 m of textual records and other materials.. Background In 1997

Handy, Todd C.

60

Burnett Collection / Frank Burnett (collector)  

E-Print Network [OSTI]

Burnett Collection / Frank Burnett (collector) Last revised September 2010 University of British;Collection Description Burnett Collection / Frank Burnett (collector). 1927-1944. 6.5 cm of textual records

Handy, Todd C.

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Electrochemically Stable Cathode Current Collectors for Rechargeable...  

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

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

62

The Everyday Collector Cati Vaucelle  

E-Print Network [OSTI]

The Everyday Collector Cati Vaucelle Massachusetts Institute of Technology MIT Media Lab 20 Ames of the Everyday Collector as a bridge between the traditional physical collection and the growing digital one through analysis. The collector looks for cues in the world to witness a story or to make sense of one

Ishii, Hiroshi

63

Collector sealants and breathing. Final Report, 25 September 1978-31 December 1979  

SciTech Connect (OSTI)

The objectives of this program were: (1) to investigate the pertinent properties of a variety of possible sealants for solar collectors and identify the most promising candidates, and (2) to study the effect of breathing in flat-plate, thermal solar collector units. The study involved two types of sealants, Class PS which includes preformed seals or gaskets and Class SC which includes sealing compounds or caulks. It was the intent of the study to obtain data regarding initial properties of candidate elastomers from manufacturers and from the technical literature and to use those sources to provide data pertaining to endurance of these materials under environmental service conditions. Where necessary, these data were augmented by experimental measurements. Environmental stresses evaluated by these measurements included elevated temperatures, moisture, ultraviolet light, ozone and oxygen, and fungus. The second major area of the work involved a study of the effects of materials used and design on the durability of solar collectors. Factors such as design, fabrication, materials of construction, seals and sealing techniques and absorber plate coatings were observed on actual field units removed from service. Such phenomena as leakage, corrosion and formation of deposits on glazing and absorber plate were noted. An evaluation of the properties of several desiccants was made in order to providemeans to mitigate the deleterious effects of water on collector life. Adsorbents for organic degradation products of sealants were also investigated in order to protect the glazing and absorber plate from deposited coatings. Since adsorbents and desiccants in general tend to take up both water and organic decomposition products, relative affinities of a number of these agents for water and for organic compounds were determined . Results are presented in detail.

Mendelsohn, M A; Luck, R M; Yeoman, F A; Navish, Jr, F W

1980-02-20T23:59:59.000Z

64

COMPARISON OF PROPORTIONAL AND ON/OFF COLLECTOR LOOP CONTROL STRATEGIES USING A DYNAMIC COLLECTOR MODEL  

E-Print Network [OSTI]

and Evacu- ated Tube Collectors. 11 Proceedings of 1977 ISEStemperature = ambient temp. collector capakitance d) lowday values qiven in (e) end (dl collector loss coefficient=

Schiller, Steven R.

2013-01-01T23:59:59.000Z

65

The weighted words collector  

E-Print Network [OSTI]

Motivated by applications in bioinformatics, we consider the word collector problem, i.e. the expected number of calls to a random weighted generator of words of length $n$ before the full collection is obtained. The originality of this instance of the non-uniform coupon collector lies in the, potentially large, multiplicity of the words/coupons of a given probability/composition. We obtain a general theorem that gives an asymptotic equivalent for the expected waiting time of a general version of the Coupon Collector. This theorem is especially well-suited for classes of coupons featuring high multiplicities. Its application to a given language essentially necessitates some knowledge on the number of words of a given composition/probability. We illustrate the application of our theorem, in a step-by-step fashion, on three exemplary languages, revealing asymptotic regimes in $\\Theta(\\mu(n)\\cdot n)$ and $\\Theta(\\mu(n)\\cdot \\log n)$, where $\\mu(n)$ is the sum of weights over words of length $n$.

Boisberranger, Jrmie Du; Ponty, Yann

2012-01-01T23:59:59.000Z

66

Solar collector assembly  

SciTech Connect (OSTI)

Individual collector cells are fitted together in series along a heat transfer medium tube. The cells have a cylindrical housing with mating interconnecting flanges at the ends, through which the tube also passes. The flanges may have sealing gaskets. The housing has a transparent front side and a reflective back side. The cross-sectional configuration of the front is arcuate, while that of the back is parabolic. The cells are fixed with respect to the tube axis, but can rotate about it to follow the sun. Parallel cell rows can be interconnected to rotate together. Interconnected, articulated cell rows are disclosed as a removable cover for a swimming pool.

Bogatzki, H.

1980-09-16T23:59:59.000Z

67

Labour Relations Research Collection / Mark Thompson (collector)  

E-Print Network [OSTI]

Labour Relations Research Collection / Mark Thompson (collector) Compiled by Erwin Wodarczak (2004 of Contents Collection Description o Title / Dates of Creation / Physical Description o Collector catalogue) #12;Collection Description Labour Relations Research Collection / Mark Thompson (collector

Handy, Todd C.

68

Integrated solar collector  

DOE Patents [OSTI]

A solar collector having a copper panel in a contiguous space relationship with a condenser-evaporator heat exchanger located under the panel, the panel having a honeycomb-like structure on its interior defining individual cells which are filled with zeolite loaded, in its adsorbed condition, with 18 to 20% by weight of water. The interior of the panel and heat exchanger are maintained at subatmospheric pressure of about 0.1 to 1 psia. The panel and heat exchanger are insulated on their lateral sides and bottoms and on the top of the heat exchange. The panel has a black coating on its top which is exposed to and absorbs solar energy. Surrounding the insulation (which supports the panel) is an extruded aluminum framework which supports a pair of spaced-apart glass panels above the solar panel. Water in conduits from a system for heating or cooling or both is connected to flow into an inlet and discharge from outlet of a finned coil received within the heat exchanger. The collector panel provides heat during the day through desorption and condensing of water vapor from the heated solar panel in the heat exchanger and cools at night by the re-adsorption of the water vapor from the heat exchanger which lowers the absolute pressure within the system and cools the heat exchange coils by evaporation.

Tchernev, Dimiter I. (9 Woodman Rd., Chestnut Hill, MA 02167)

1985-01-01T23:59:59.000Z

69

International House Collection / William Black (collector)  

E-Print Network [OSTI]

International House Collection / William Black (collector) Revised by Erwin Wodarczak (2010 (collector). 1950-1953. 45 p. of textual records. Biographical Sketch Born in London, England, William

Handy, Todd C.

70

Faris Committee Collection / Gordon Selman (collector)  

E-Print Network [OSTI]

Faris Committee Collection / Gordon Selman (collector) Compiled by Erwin Wodarczak (2004) Revised) #12;Collection Description Faris Committee Collection / Gordon Selman (collector). March

Handy, Todd C.

71

International House Collection / Stanley Read (collector)  

E-Print Network [OSTI]

International House Collection / Stanley Read (collector) Revised by Erwin Wodarczak (2010 (collector). - 1953-1955. 2 cm of textual records. Biographical Sketch Born in Quebec, Stanley Read earned

Handy, Todd C.

72

A performance correlation of horizontal solar heaters  

E-Print Network [OSTI]

A PERFORMANCE CORRELATION OF HORIZONTAL SOLAR HEATERS A Thesis by WILFORD HUGO GOPFFARTH Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1964... Major Subject: Chemical Engineering ABSTRACT The purpose of this work was to determine design parameters for flat plastic covered solar collectors. First, the transmittance ? absorp- tion product as a function of the angle of incidence was determined...

Gopffarth, Wilford Hugo

1964-01-01T23:59:59.000Z

73

Biobriefcase aerosol collector  

DOE Patents [OSTI]

A system for sampling air and collecting particles entrained in the air that potentially include bioagents. The system comprises providing a receiving surface, directing a liquid to the receiving surface and producing a liquid surface. Collecting samples of the air and directing the samples of air so that the samples of air with particles entrained in the air impact the liquid surface. The particles potentially including bioagents become captured in the liquid. The air with particles entrained in the air impacts the liquid surface with sufficient velocity to entrain the particles into the liquid but cause minor turbulence. The liquid surface has a surface tension and the collector samples the air and directs the air to the liquid surface so that the air with particles entrained in the air impacts the liquid surface with sufficient velocity to entrain the particles into the liquid, but cause minor turbulence on the surface resulting in insignificant evaporation of the liquid.

Bell, Perry M. (Tracy, CA); Christian, Allen T. (Madison, WI); Bailey, Christopher G. (Pleasanton, CA); Willis, Ladona (Manteca, CA); Masquelier, Donald A. (Tracy, CA); Nasarabadi, Shanavaz L. (Livermore, CA)

2009-09-22T23:59:59.000Z

74

ADVANCED HYBRID PARTICULATE COLLECTOR  

SciTech Connect (OSTI)

A new concept in particulate control, called an advanced hybrid particulate collector (AHPC), is being developed under funding from the US Department of Energy. The AHPC combines the best features of electrostatic precipitators (ESPs) and baghouses in a manner that has not been done before. The AHPC concept consists of a combination of fabric filtration and electrostatic precipitation in the same housing, providing major synergism between the two collection methods, both in the particulate collection step and in the transfer of dust to the hopper. The AHPC provides ultrahigh collection efficiency, overcoming the problem of excessive fine-particle emission with conventional ESPs, and it solves the problem of reentrainment and collection of dust in conventional baghouses. The AHPC is currently being tested at the 2.7-MW scale at the Big Stone power station.

Stanley Miller; Rich Gebert; William Swanson

1999-11-01T23:59:59.000Z

75

LHCb Tag Collector  

E-Print Network [OSTI]

The LHCb physics software consists of hundreds of packages, each of which is developed by one or more physicists. When the developers have some code changes that they would like released, they commit them to the version control system, and enter the revision number into a database. These changes have to be integrated into a new release of each of the physics analysis applications. Tests are then performed by a nightly build system, which rebuilds various configurations of the whole software stack and executes a suite of run-time functionality tests. A Tag Collector system has been developed using solid standard technologies to cover both the use cases of developers and integration managers. A simple Web interface, based on an AJAX-like technology, is available. Integration with software management and Nightly Build programs is possible via a Python API. Data are stored in a relational database with the help of an ORM (Object-Relational Mapping) library.

Fuente Fernndez, P; Cousin, N

2011-01-01T23:59:59.000Z

76

AEROSOL PARTICLE COLLECTOR DESIGN STUDY  

SciTech Connect (OSTI)

A computational evaluation of a particle collector design was performed to evaluate the behavior of aerosol particles in a fast flowing gas stream. The objective of the work was to improve the collection efficiency of the device while maintaining a minimum specified air throughput, nominal collector size, and minimal power requirements. The impact of a range of parameters was considered subject to constraints on gas flow rate, overall collector dimensions, and power limitations. Potential improvements were identified, some of which have already been implemented. Other more complex changes were identified and are described here for further consideration. In addition, fruitful areas for further study are proposed.

Lee, S; Richard Dimenna, R

2007-09-27T23:59:59.000Z

77

Shenandoah parabolic dish solar collector  

SciTech Connect (OSTI)

The objectives of the Shenandoah, Georgia, Solar Total Energy System are to design, construct, test, and operate a solar energy system to obtain experience with large-scale hardware systems for future applications. This report describes the initial design and testing activities conducted to select and develop a collector that would serve the need of such a solar total energy system. The parabolic dish was selected as the collector most likely to maximize energy collection as required by this specific site. The fabrication, testing, and installation of the parabolic dish collector incorporating improvements identified during the development testing phase are described.

Kinoshita, G.S.

1985-01-01T23:59:59.000Z

78

Criminology Programme Collection / Elmer "Kim" Nelson (collector)  

E-Print Network [OSTI]

Criminology Programme Collection / Elmer "Kim" Nelson (collector) Compiled by Erwin Wodarczak (2007 of Creation / Physical Description o Collector's Biographical Sketch o Scope and Content o Notes Catalogue" Nelson (collector). - 1952-2007. 3 cm of textual materials. 1 audio cassette. Collector's Biographical

Handy, Todd C.

79

Watson Thomson Research Collection / Michael Welton (collector)  

E-Print Network [OSTI]

Watson Thomson Research Collection / Michael Welton (collector) Compiled by Christopher Hives (2007 of Creation / Physical Description o Collector's Biographical Sketch o Scope and Content o Notes Item List / Michael Welton (collector). 1981-1982. 19 audio recordings. Collector's Biographical Sketch Michael

Handy, Todd C.

80

Sherwood Lett Collection / Reginald H. Roy (collector)  

E-Print Network [OSTI]

Sherwood Lett Collection / Reginald H. Roy (collector) Compiled by Erwin Wodarczak (2012 of Creation / Physical Description o Collector's Biographical Sketch o Scope and Content o Notes Catalogue (collector). 1964-1990. 3 cm of textual records. Collector's Biographical Sketch Reginald Roy was born

Handy, Todd C.

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

UBC Subject File Collection / UBC Archives (collector)  

E-Print Network [OSTI]

UBC Subject File Collection / UBC Archives (collector) Compiled by Max Steiner (2005) Revised Description o Title / Dates of Creation / Physical Description o Collector's Biographical Sketch o Scope Files Collection / UBC Archives (collector). 1915-2000. 10.8 m of textual materials. Collector

Handy, Todd C.

82

Wisconsin collector-efficiency study, phase two  

SciTech Connect (OSTI)

The collector efficiency study developed a solar collector rating methodology specific to Wisconsin conditions. Existing rating programs were researched and a collector methodology was developed. A computer program was written to calculate the collector ratings and 25 collector models were rated. The accuracy of the proposed rating methodology was evaluated for 16 collectors placed in 11 domestic hot water systems. One liquid space heating analysis with storage and one air space heating analysis without storage were completed. A solar assisted heat pump in which the solar collectors function as evaporators was also analyzed.

Abright, B.L.

1982-01-15T23:59:59.000Z

83

Solar-collector test report  

SciTech Connect (OSTI)

Activities to evaluate the commercial readiness and potential of an all plastic solar hot water collector are summarized. The results of tests at the Florida Solar Energy Center are reported. The collector is described and data are given including the efficiency curve, incident angle modifier, raw test data, and the results of static tests. A meeting is also described which was called to obtain an outside evaluation of the collector and recommendations as to future activities. It was agreed that the design demonstrated that a thin-film plastic absorber could be built to produce performance at least equal to the mid-range of conventional copper or aluminum absorbers and that production costs could probably be at least half that of currently available collectors. (LEW)

Stoney, W. E. [comp.] [comp.

1981-06-01T23:59:59.000Z

84

Radiant energy collector. [Patent application  

DOE Patents [OSTI]

A cylindrical radiant energy collector is provided which includes a reflector spaced apart from an energy absorber. The reflector is of a particular shape which ideally eliminates gap losses.

McIntire, W.R.

1980-02-14T23:59:59.000Z

85

Solar heat collector  

SciTech Connect (OSTI)

An evacuated double-tubing solar heat collector is described comprising: an inner tube having an open end and a closed end; a selective absorption film applied over an exterior surface of the inner tube; an outer tube having an open end and a closed end; the inner tube being constructed to be received within the outer tube; and a substantially continuous annular coil spring ring being substantially found in cross section and of a predetermined thickness. The coil spring ring is disposed between and engages an interior surface of the outer tube and the exterior surface of the inner tube for spacing and resiliently supporting the inner tube relative to the outer tube. The ring is freely rotatably positioned to be moved axially along the length of the inner tube due only to frictional forces exerted on the coil spring. The coil spring ring is positioned on the inner tube at approximately a middle position along the length of the inner tube by being initially positioned on the inner tube adjacent to the closed end thereof and rotated upon itself axially along the inner tube only by frictional engagement with the interior surface of the outer tube as the inner tube is inserted into the open end of the outer tube and moved to a fully inserted position within the outer tube. The open end of the inner tube and the open end of the outer tube are fused to form a junction and hermetically sealed.

Takeuchi, H.; Mikiya, T.

1987-03-17T23:59:59.000Z

86

Polar axis solar collector  

SciTech Connect (OSTI)

A polar column solar collector is described for use in association with a building, the system having a concave mirror located on the exterior of the building and defining a focal point and a central axis, a mounting column secured to the mirror coaxial therewith, a polar axis column, a hinge swingably connecting the mounting column to the polar axis column for moving the concave mirror to aim it directly at the sun at least over a predetermined period of the daylight hours, a secondary reflector located at the focal point of the concave mirror to receive the sun's rays reflected from the concave mirror, an opening in the concave mirror to receive a concentrated beam of the sun's rays reflected from the secondary reflector and to direct the beam along the mounting column, a third reflector movably located at the junction of the mounting column and the polar axis column to receive the concentrated beam of the sun's rays from the secondary reflector reflected through the opening, and to redirect it along the polar axis column, and a polar column rotator for rotating at least a portion of the polar column to track the movement of the sun. 7 figs.

Ludlow, G.T.

1994-01-04T23:59:59.000Z

87

SOLAR NANTENNA ELECTROMAGNETIC COLLECTORS  

SciTech Connect (OSTI)

This research explores a new efficient approach for producing electricity from the abundant energy of the sun. A nanoantenna electromagnetic collector (NEC) has been designed, prototyped, and tested. Proof of concept has been validated. The device targets mid-infrared wavelengths where conventional photovoltaic (PV) solar cells do not respond but is abundant in solar energy. The initial concept of designing NEC antennas was based on scaling of radio frequency antenna theory. This approach has proven unsuccessful by many due to not fully understanding and accounting for the optical behavior of materials in the THz region. Also until recent years the nanofabrication methods were not available to fabricate the optical antenna elements. We have addressed and overcome both technology barriers. Several factors were critical in successful implementation of NEC including: 1) frequency-dependent modeling of antenna elements, 2) selection of materials with proper THz properties and 3) novel manufacturing methods that enable economical large-scale manufacturing. The work represents an important step toward the ultimate realization of a low-cost device that will collect as well as convert this radiation into electricity, which will lead to a wide spectrum, high conversion efficiency, and low cost solution to complement conventional PVs.

Steven D. Novack; Dale K. Kotter; Dennis Slafer; Patrick Pinhero

2008-08-01T23:59:59.000Z

88

ADVANCED HYBRID PARTICULATE COLLECTOR  

SciTech Connect (OSTI)

A new concept in particulate control, called an advanced hybrid particulate collector (AHPC), is being developed under funding from the US Department of Energy. The AHPC combines the best features of electrostatic precipitators (ESPs) and baghouses in an entirely novel manner. The AHPC concept combines fabric filtration and electrostatic precipitation in the same housing, providing major synergism between the two methods, both in the particulate collection step and in transfer of dust to the hopper. The AHPC provides ultrahigh collection efficiency, overcoming the problem of excessive fine-particle emissions with conventional ESPs, and solves the problem of reentrainment and recollection of dust in conventional baghouses. Phase I of the development effort consisted of design, construction, and testing of a 5.7-m{sup 3}/min (200-acfm) working AHPC model. Results from both 8-hour parametric tests and 100-hour proof-of-concept tests with two different coals demonstrated excellent operability and greater than 99.99% fine-particle collection efficiency.

Stanley J. Miller; Grant L. Schelkoph; Grant E. Dunham

2000-12-01T23:59:59.000Z

90

COMPARISON OF PROPORTIONAL AND ON/OFF SOLAR COLLECTOR LOOP CONTROL STRATEGIES USING A DYNAMIC COLLECTOR MODEL  

E-Print Network [OSTI]

TABLE 1. SUMMARY OF COLLECTOR PARAMETERS AND SIMULATION RUNSFlat-Plate Solar Heat Collectors" Solar Energy Vol. 3, No.Plate and Evacuated Tube Collectors." Proceedings of 1977

Schiller, Steven R.

2013-01-01T23:59:59.000Z

91

Enhanced Oil Recovery by Horizontal Waterflooding  

SciTech Connect (OSTI)

Solar energy has become a major alternative for supplying a substantial fraction of the nation's future energy needs. The U.S. Department of Energy (DOE) supports activities ranging from the demonstration of existing technology to research on future possibilities. At Lawrence Berkeley Laboratory (LBL), projects are in progress that span a wide range of activities, with the emphasis on research to extend the scientific basis for solar energy applications, and on preliminary development of new approaches to solar energy conversion. To assess various solar applications, it is important to quantify the solar resource. Special instruments have been developed and are now in use to measure both direct solar radiation and circum-solar radiation, i.e., the radiation from near the sun resulting from the scattering of sunlight by small particles in the atmosphere. These measurements serve to predict the performance of solar designs that use focusing collectors employing mirrors or lenses to concentrate the sunlight. Efforts have continued at a low level to assist DOE in demonstrating existing solar technology by providing the San Francisco Operations Office (SAN) with technical support for its management of commercial-building solar demonstration projects. Also, a hot water and space-heating system has been installed on an LBL building as part of the DOE facilities Solar Demonstration Program. LBL continues to provide support for the DOE Appropriate Energy Technology grants program. Evaluations are made of the program's effectiveness by, for example, estimating the resulting potential energy savings. LBL also documents innovative features and improvements in economic feasibility as compared to existing conventional systems or applications. In the near future, we expect that LBL research will have a substantial impact in the areas of solar heating and cooling. Conventional and new types of high-performance absorption air conditioners are being developed that are air-cooled and suitable for use with flat plate or higher-temperature collectors. Operation of the controls test facility and computer modeling of collector loop and building load dynamics are yielding quantitative evaluations of the performance of different control strategies for active solar-heating systems. Research is continuing on ''passive'' approaches to solar heating and cooling, where careful considerations of architectural design, construction materials, and the environment are used to moderate a building's interior climate. Computer models of passive concepts are being developed and incorporated into building energy analysis computer programs which are in the public domain. The resulting passive analysis capabilities are used in systems studies leading to design tools and in the design of commercial buildings on a case study basis. The investigation of specific passive cooling methods is an ongoing project; for example, a process is being studied in which heat-storage material would be cooled by radiation to the night sky, and would then provide ''coolness'' to the building. Laboratory personnel involved in the solar cooling, controls, and passive projects are also providing technical support to the Active Heating and Cooling Division and the Passive and Hybrid Division of DOE in developing program plans, evaluating proposals, and making technical reviews of projects at other institutions and in industry. Low-grade heat is a widespread energy resource that could make a significant contribution to energy needs if economical methods can be developed for converting it to useful work. Investigations continued this year on the feasibility of using the ''shape-memory'' alloy, Nitinol, as a basis for constructing heat engines that could operate from energy sources, such as solar-heated water, industrial waste heat, geothermal brines, and ocean thermal gradients. Several projects are investigating longer-term possibilities for utilizing solar energy. One project involves the development of a new type of solar thermal receiver that would be placed at the focus of a central

Scott Robinowitz; Dwight Dauben; June Schmeling

2005-09-05T23:59:59.000Z

92

Collector for thermionic energy converter  

SciTech Connect (OSTI)

An improved collector is provided for a thermionic energy converter. The collector comprises a p-type layer of a semiconductor material formed on an n-type layer of a semiconductor material. The p-n junction is maintained in a forward biased condition. The electron affinity of the exposed surface of the p-type layer is effectively lowered to a low level near zero by the presence of a work function lowering activator. The dissipation of energy during collection is reduced by the passage of electrons through the p-type layer in the metastable conduction band state. A significant portion of the electron current remains at the potential of the fermi level of the n-type layer rather than dropping to the fermi level of the p-type layer. Less energy is therefore dissipated as heat and a higher net power output is delivered from a thermionic energy converter incorporating the collector.

Bell, R.L.

1981-07-21T23:59:59.000Z

93

A Generalized Coupon Collector Problem  

E-Print Network [OSTI]

This paper provides analysis to a generalized version of the coupon collector problem, in which the collector gets $d$ distinct coupons each run and she chooses the one that she has the least so far. On the asymptotic case when the number of coupons $n$ goes to infinity, we show that on average $\\frac{n\\log n}{d} + \\frac{n}{d}(m-1)\\log\\log{n}+O(mn)$ runs are needed to collect $m$ sets of coupons. An efficient exact algorithm is also developed for any finite case to compute the average needed runs exactly. Numerical examples are provided to verify our theoretical predictions.

Xu, Weiyu

2010-01-01T23:59:59.000Z

94

Thin film solar energy collector  

DOE Patents [OSTI]

A multi-layer solar energy collector of improved stability comprising: (1) a substrate of quartz, silicate glass, stainless steel or aluminum-containing ferritic alloy; (2) a solar absorptive layer comprising silver, copper oxide, rhodium/rhodium oxide and 0-15% by weight of platinum; (3) an interlayer comprising silver or silver/platinum; and (4) an optional external anti-reflective coating, plus a method for preparing a thermally stable multi-layered solar collector, in which the absorptive layer is undercoated with a thin film of silver or silver/platinum to obtain an improved conductor-dielectric tandem.

Aykan, Kamran (Monmouth Beach, NJ); Farrauto, Robert J. (Westfield, NJ); Jefferson, Clinton F. (Millburn, NJ); Lanam, Richard D. (Westfield, NJ)

1983-11-22T23:59:59.000Z

95

Chinese Canadian Research Collection / Edgar Wickberg (collector)  

E-Print Network [OSTI]

Chinese Canadian Research Collection / Edgar Wickberg (collector) Compiled by Christopher Hives Canadian Research Collection / Edgar Wickberg (collector). 1885-1979, 1984-1996. 7.53 m of textual

Handy, Todd C.

96

The design of a pre-collector for cyclone collectors  

E-Print Network [OSTI]

Tests were conducted on small laboratory scale ID-3D and 2D-2D cyclones to demonstrate the reduction in emission concentrations resulting when a pre-cyclone collector is used to collect large trash particles prior to cyclone fine dust collection...

Mihalski, Karl Duane

1996-01-01T23:59:59.000Z

97

Canadian Unity Collection / Charles Connaghan (collector)  

E-Print Network [OSTI]

Canadian Unity Collection / Charles Connaghan (collector) University of British Columbia Archives Collector's Biographical Sketch o Scope and Content o Notes Series Descriptions o Council for Canadian) #12;Collection Description Canadian Unity Collection. - 1975-1980 39 cm of textual records. Collector

Handy, Todd C.

98

Lamb Research Collection / W. Kaye Lamb (collector)  

E-Print Network [OSTI]

Lamb Research Collection / W. Kaye Lamb (collector) Compiled by Jane Turner (1990) Revised by Erwin Collection Description o Title / Dates of Creation / Physical Description o Collector's Biographical Sketch o Collection. - 1959-1991. 1.3 m of textual records. 90 maps and charts. 26 microfilm reels. Collector

Handy, Todd C.

99

Day of Concern Collection / Ture Erickson (collector)  

E-Print Network [OSTI]

Day of Concern Collection / Ture Erickson (collector) Last revised October 2011 University;Collection Description Day of Concern collection / Ture Erickson (collector). 1984. 6.5 cm of textual records. Collector's Biographical Sketch Born in New Westminster, Ture Erickson became Head of Sedgewick

Handy, Todd C.

100

University Extension Collection / Graham A. Drew (collector)  

E-Print Network [OSTI]

University Extension Collection / Graham A. Drew (collector) Last revised October 2010 University / Physical Description o Collector's Biographical Sketch o Scope and Content o Note File List Catalogue. Drew (collector). 1959-1982. 40 cm of textual records. ca. 100 photographs; prints and slides

Handy, Todd C.

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

UBC Performing Arts Collection / UBC Archives (collector)  

E-Print Network [OSTI]

UBC Performing Arts Collection / UBC Archives (collector) Compiled by Erwin Wodarczak (2011) Last Description o Title / Dates of Creation / Physical Description o Collector's Administrative History o;Collection Description UBC Performing Arts Collection / UBC Archives (collector). 1936-2011. 24 cm

Handy, Todd C.

102

Nontracking parabolic solar energy collector apparatus  

SciTech Connect (OSTI)

A mirror collector having a generally parabolic surface terminating near the vertex in a circular or cylindrical curve, an evacuated cylindrical heat entrapment tube compossed of a clear glass for energy admission and two pair of elongated heat collector tubes centrally located in the heat entrapment tube for passing an inner fluid to be heated. The two pair of heat collector tubes are constructed of copper with a selective absorption coating for receiving heat and positioned so that the mirror collector concentrates substantially all incoming energy upon the central heat collector tubes.

Gill, M. T.; Rogers, M. C.

1985-12-31T23:59:59.000Z

103

Automated Verification of Practical Garbage Collectors  

E-Print Network [OSTI]

Garbage collectors are notoriously hard to verify, due to their low-level interaction with the underlying system and the general difficulty in reasoning about reachability in graphs. Several papers have presented verified collectors, but either the proofs were hand-written or the collectors were too simplistic to use on practical applications. In this work, we present two mechanically verified garbage collectors, both practical enough to use for real-world C# benchmarks. The collectors and their associated allocators consist of x86 assembly language instructions and macro instructions, annotated with preconditions, postconditions, invariants, and assertions. We used the Boogie verification generator and the Z3 automated theorem prover to verify this assembly language code mechanically. We provide measurements comparing the performance of the verified collector with that of the standard Bartok collectors on off-the-shelf C# benchmarks, demonstrating their competitiveness.

Hawblitzel, Chris

2010-01-01T23:59:59.000Z

104

Colimits for Concurrent Collectors Dusko Pavlovic1  

E-Print Network [OSTI]

Colimits for Concurrent Collectors Dusko Pavlovic1 , Peter Pepper2 , and Doug Smith1 1 Kestrel is sketched in Section 6. We base our programs on the concept of monads. #12;System Mutator Collector Mut-Spec(M-Env) Coll-Spec(C-Env) M-Env C-Env Mutator-View Collector-View Monad(Heap) Monad(State) Heap State Graph Fig

105

Tubular solid oxide fuel cell current collector  

DOE Patents [OSTI]

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

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

2010-07-20T23:59:59.000Z

106

Project Profile: Improved Large Aperture Collector Manufacturing...  

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

feasibility demonstrations focused in three main areas: an aggressive manufacturing optimization of the collector sub-structures for lower input material costs & mechanized...

107

Wind loads on heliostats and parabolic dish collectors: Final subcontractor report  

SciTech Connect (OSTI)

A major intent of this study was to define wind load reduction factors for parabolic dish solar collectors within a field protected by upwind collectors, wind protective fences, or other blockages. This information will help researchers improve the economy of parabolic collector support structures and drive mechanisms. The method used in the study was to generalize wind load data obtained during tests on model collectors placed in a modeled atmospheric wind in a boundary-layer wind tunnel. A second objective of the study was to confirm and document a sensitivity in load to level of turbulence, or gustiness, in the approaching wind. A key finding was that wind-load reduction factors for forces (horizontal and vertical) were roughly similar to those for flat heliostats, with some forces significantly less than those for flat shapes. However, load reductions for moments showed a smaller load reduction, particularly for the azimuth moment. The lack of load reduction could be attributed to collector shape, but specific flow features responsible for and methods to induce a load reduction were not explored. 62 figs., 13 tabs.

Peterka, J.A.; Tan, Z.; Bienkiewicz, B.; Cermak, J.E.

1988-11-01T23:59:59.000Z

108

Automated solar collector installation design  

DOE Patents [OSTI]

Embodiments may include systems and methods to create and edit a representation of a worksite, to create various data objects, to classify such objects as various types of pre-defined "features" with attendant properties and layout constraints. As part of or in addition to classification, an embodiment may include systems and methods to create, associate, and edit intrinsic and extrinsic properties to these objects. A design engine may apply of design rules to the features described above to generate one or more solar collectors installation design alternatives, including generation of on-screen and/or paper representations of the physical layout or arrangement of the one or more design alternatives.

Wayne, Gary; Frumkin, Alexander; Zaydman, Michael; Lehman, Scott; Brenner, Jules

2014-08-26T23:59:59.000Z

109

Self-Cleaning CSP Collectors  

Broader source: Energy.gov [DOE]

This fact sheet details the efforts of a Boston University-led team which is working on a DOE SunShot Initative project. The concentrated solar power industry needs an automated, efficient cleaning process that requires neither water nor moving parts to keep the solar collectors clean for maximum reflectance and energy output. This project team is working to develop a transparent electrodynamic screen as a self-cleaning technology for solar concentrators; cleaning is achieved without water, moving parts, or manual labor. Because of these features, it has a strong potential for worldwide deployment.

110

The Omniscient Garbage Collector: a Resource Analysis Framework (extended abstract)  

E-Print Network [OSTI]

The Omniscient Garbage Collector: a Resource Analysis Framework (extended abstract) Aurlien point of view, we develop the omniscient garbage collector (OGC), which decides precisely when the resource index requires an omniscient garbage collector, a NP-complete problem tightly connected

Paris-Sud XI, Universit de

111

The Collector's Brotherhood Dominique Foata,1 Doron Zeilberger2  

E-Print Network [OSTI]

The Collector's Brotherhood Dominique Foata,1 Doron Zeilberger2 Abstract. Further computations are made on the traditional coupon collector's problem when the collector shares his harvest with his younger brothers. When the book of the p

Zeilberger, Doron

112

UBC Undergraduate Student Examination Collection / UBC Library (collector)  

E-Print Network [OSTI]

UBC Undergraduate Student Examination Collection / UBC Library (collector) Compiled by Christopher) #12;Collection Description UBC Undergraduate Student Examination Collection / UBC Library (collector

Handy, Todd C.

113

Karl Terzaghi Research Collection / Charles F. Ripley (collector)  

E-Print Network [OSTI]

Karl Terzaghi Research Collection / Charles F. Ripley (collector) Compiled by Christopher Hives Karl Terzaghi Research Collection / Charles F. Ripley (collector). 1912 1997. 1.31 m of textual

Handy, Todd C.

114

Project Profile: Next-Generation Parabolic Trough Collectors...  

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

Parabolic Trough Collectors and Components for CSP Applications Project Profile: Next-Generation Parabolic Trough Collectors and Components for CSP Applications Abengoa logo...

115

UBC 50th Anniversary Sound Collection / UBC Archives (collector)  

E-Print Network [OSTI]

UBC 50th Anniversary Sound Collection / UBC Archives (collector) Compiled by Erwin Wodarczak (2006 Archives (collector). September- October 1965. 20 audio recordings. Administrative Sketch The University

Handy, Todd C.

116

A prototype photovoltaic/thermal system integrated with transpired collector  

SciTech Connect (OSTI)

Building-integrated photovoltaic/thermal (BIPV/T) systems may be utilized to produce useful heat while simultaneously generating electricity from the same building envelope surface. A well known highly efficient collector is the open-loop unglazed transpired collector (UTC) which consists of dark porous cladding through which outdoor air is drawn and heated by absorbed solar radiation. Commercially available photovoltaic systems typically produce electricity with efficiencies up to about 18%. Thus, it is beneficial to obtain much of the normally wasted heat from the systems, possibly by combining UTC with photovoltaics. Combination of BIPV/T and UTC systems for building facades is considered in this paper - specifically, the design of a prototype facade-integrated photovoltaic/thermal system with transpired collector (BIPV/T). A full scale prototype is constructed with 70% of UTC area covered with PV modules specially designed to enhance heat recovery and compared to a UTC of the same area under outdoor sunny conditions with low wind. The orientation of the corrugations in the UTC is horizontal and the black-framed modules are attached so as to facilitate flow into the UTC plenum. While the overall combined thermal efficiency of the UTC is higher than that of the BIPV/T system, the value of the generated energy - assuming that electricity is at least four times more valuable than heat - is between 7% and 17% higher. Also, the electricity is always useful while the heat is usually utilized only in the heating season. The BIPV/T concept is applied to a full scale office building demonstration project in Montreal, Canada. The ratio of photovoltaic area coverage of the UTC may be selected based on the fresh air heating needs of the building, the value of the electricity generated and the available building surfaces. (author)

Athienitis, Andreas K.; Bambara, James; O'Neill, Brendan; Faille, Jonathan [Dept. of Building, Civil and Environmental Engineering, Concordia University, 1455 Maisonneuve W., Montreal, Quebec (Canada)

2011-01-15T23:59:59.000Z

117

Solar collector mounting and support apparatus  

SciTech Connect (OSTI)

A solar collector system is described of the type having a movable surface for receiving solar radiation having improved means for rotatably supporting the movable surface and for rotating the collector surface. A support axle for the collector includes a ball at one end which is carried within a cylindrical sleeve in the solar collector to support the weight of the collector. A torque transmitting arm comprising a flexible flat strip is connected at one end to the axle and at the other end to the collector surface. An improved rotational drive mechanism includes a first sprocket wheel carried on the axle and a second sprocket wheel supported on a support pylon with a drive chain engaging both sprockets. A double acting piston also supported by the pylon is coupled to the chain so that the chain may be driven by a hydraulic control system to rotate the collector surfaces as required. An improved receiver tube support ring is also provided for use with the improved mounting and support apparatus to improve overall efficiency by reducing thermal losses.

Hutchison, J.A.

1981-12-22T23:59:59.000Z

118

Formal Derivation of Concurrent Garbage Collectors  

E-Print Network [OSTI]

Concurrent garbage collectors are notoriously difficult to implement correctly. Previous approaches to the issue of producing correct collectors have mainly been based on posit-and-prove verification or on the application of domain-specific templates and transformations. We show how to derive the upper reaches of a family of concurrent garbage collectors by refinement from a formal specification, emphasizing the application of domain-independent design theories and transformations. A key contribution is an extension to the classical lattice-theoretic fixpoint theorems to account for the dynamics of concurrent mutation and collection.

Pavlovic, Dusko; Smith, Douglas R

2010-01-01T23:59:59.000Z

119

The Collector's Brotherhood Dominique Foata, 1 Doron Zeilberger 2  

E-Print Network [OSTI]

The Collector's Brotherhood Dominique Foata, 1 Doron Zeilberger 2 Abstract. Further computations are made on the traditional coupon collector's problem when the collector shares his harvest with his younger brothers. When the book of the p-th brother of the collector is completed, the books

Zeilberger, Doron

120

SOME NEW ASPECTS OF THE COUPON COLLECTOR'S PROBLEM  

E-Print Network [OSTI]

SOME NEW ASPECTS OF THE COUPON COLLECTOR'S PROBLEM AMY N. MYERS AND HERBERT S. WILF SIAM J extend the classical coupon collector's problem to one in which two collectors are simultaneously collectors finish at the same trial, and we find, using the methods of Gessel Viennot, the probability

Myers, Amy

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Western Canada Art Circuit Collection / June Binkert (collector)  

E-Print Network [OSTI]

Western Canada Art Circuit Collection / June Binkert (collector) Compiled by Erwin Wodarczak (1997 Description o Title / Dates of Creation / Physical Description o Collector's Biographical Sketch o Custodial collection / June Binkert (collector). -- 1950, 1957-1970. 62.5 cm of textual records. Collector

Handy, Todd C.

122

Using Prefetching to Improve Reference-Counting Garbage Collectors  

E-Print Network [OSTI]

Using Prefetching to Improve Reference-Counting Garbage Collectors Harel Paz 1 and Erez Petrank 2 1-counting collector. We propose potential prefetching opportunities for the advanced reference-counting collector and report an implementation of a collector that employs such prefetch- ing. The proposed prefetch

Petrank, Erez

123

Integrating Generations with Advanced Reference Counting Garbage Collectors  

E-Print Network [OSTI]

Integrating Generations with Advanced Reference Counting Garbage Collectors Hezi Azatchi 1 and Erez@cs.technion.ac.il Abstract. We study an incorporation of generations into a modern reference counting collector. We start with the two on-the- y collectors suggested by Levanoni and Petrank: a reference counting collector

Krintz, Chandra

124

Norton Collector Circuit The Norton equivalent circuit seen looking into the collector can be used to solve for the  

E-Print Network [OSTI]

Norton Collector Circuit The Norton equivalent circuit seen looking into the collector can be used with Thvenin sources connected to its base and emitter. With the collector grounded, the col- lector current is called the short-circuit output current or ic(sc). The current source in the Norton collector circuit has

Leach Jr.,W. Marshall

125

Biomass Producer or Collector Tax Credit (Oregon)  

Broader source: Energy.gov [DOE]

The Oregon Department of Energy provides a tax credit for agricultural producers or collectors of biomass. The credit can be used for eligible biomass used to produce biofuel; biomass used in...

126

Tilt assembly for tracking solar collector assembly  

DOE Patents [OSTI]

A tilt assembly is used with a solar collector assembly of the type comprising a frame, supporting a solar collector, for movement about a tilt axis by pivoting a drive element between first and second orientations. The tilt assembly comprises a drive element coupler connected to the drive element and a driver, the driver comprising a drive frame, a drive arm and a drive arm driver. The drive arm is mounted to the drive frame for pivotal movement about a drive arm axis. Movement on the drive arm mimics movement of the drive element. Drive element couplers can extend in opposite directions from the outer portion of the drive arm, whereby the assembly can be used between adjacent solar collector assemblies in a row of solar collector assemblies.

Almy, Charles; Peurach, John; Sandler, Reuben

2012-01-24T23:59:59.000Z

127

Collector/Receiver Characterization (Fact Sheet)  

SciTech Connect (OSTI)

Fact sheet describing NREL CSP Program capabilities for collector/receiver characterization: determining optical efficiency, measuring heat loss, developing and testing concentrators, concentrating the sun's power, and optically characterizing CSP plants.

Not Available

2010-08-01T23:59:59.000Z

128

Next-Generation Solar Collectors for CSP  

Broader source: Energy.gov [DOE]

This fact sheet on Next-Generation Collectors for CSP highlights a solar energy program awarded through the 2012 SunShot Concentrating Solar Power R&D awards. The team is developing new solar collector base technologies for next-generation heliostats used in power tower systems. If successful, this project will result in a 50% reduction in solar field equipment cost and a 30% reduction in field installation cost compared to existing heliostat designs.

129

Horizontal well IPR calculations  

SciTech Connect (OSTI)

This paper presents the calculation of near-wellbore skin and non-Darcy flow coefficient for horizontal wells based on whether the well is drilled in an underbalanced or overbalanced condition, whether the well is completed openhole, with a slotted liner, or cased, and on the number of shots per foot and phasing for cased wells. The inclusion of mechanical skin and the non-Darcy flow coefficient in previously published horizontal well equations is presented and a comparison between these equations is given. In addition, both analytical and numerical solutions for horizontal wells with skin and non-Darcy flow are presented for comparison.

Thomas, L.K.; Todd, B.J.; Evans, C.E.; Pierson, R.G.

1996-12-31T23:59:59.000Z

130

Efficient solar cooling: first ever non-tracking solar collectors powering a double effect absorption chiller  

E-Print Network [OSTI]

R. (1980) Solar collectors for low and intermediateSystem Using Double- glazed Collectors." Applied Thermal40: Heat loss in thermal watts from the collectors to the

Poiry, Heather Marie

2011-01-01T23:59:59.000Z

131

A SOLAR TEST COLLECTOR FOR EVALUATION OF BOTH SELECTIVE AND NON-SELECTIVE ABSORBERS  

E-Print Network [OSTI]

SECTION A SOLAR TEST COLLECTOR FOR EVALUTATION OF BOTHStandards for Testing Solar Collectors and Thermal StorageSelective Coating Applied to Collector Design, Proceedings

Lampert, Carl M.

2011-01-01T23:59:59.000Z

132

Integrated main rail, feed rail, and current collector  

DOE Patents [OSTI]

A separator plate is described for a fuel cell comprising an anode current collector, a cathode current collector and a main plate, the main plate disposed between the anode current collector and the cathode current collector. The anode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the anode side of the separator plate and the cathode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the cathode side of the separator plate. In this manner, the number of components required to manufacture and assemble a fuel cell stack is reduced. 9 figs.

Petri, R.J.; Meek, J.; Bachta, R.P.; Marianowski, L.G.

1994-11-08T23:59:59.000Z

133

Integrated main rail, feed rail, and current collector  

DOE Patents [OSTI]

A separator plate for a fuel cell comprising an anode current collector, a cathode current collector and a main plate, the main plate disposed between the anode current collector and the cathode current collector. The anode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the anode side of the separator plate and the cathode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the cathode side of the separator plate. In this manner, the number of components required to manufacture and assemble a fuel cell stack is reduced.

Petri, Randy J. (Crete, IL); Meek, John (Downers Grove, IL); Bachta, Robert P. (Chicago, IL); Marianowski, Leonard G. (Mount Prospect, IL)

1994-01-01T23:59:59.000Z

134

Horizontal Advanced Tensiometer  

DOE Patents [OSTI]

An horizontal advanced tensiometer is described that allows the monitoring of the water pressure of soil positions, particularly beneath objects or materials that inhibit the use of previous monitoring wells. The tensiometer includes a porous cup, a pressure transducer (with an attached gasket device), an adaptive chamber, at least one outer guide tube which allows access to the desired horizontal position, a transducer wire, a data logger and preferably an inner guide tube and a specialized joint which provides pressure on the inner guide tube to maintain the seal between the gasket of the transducer and the adaptive chamber.

Hubbell, Joel M.; Sisson, James B.

2004-06-22T23:59:59.000Z

135

SELECTIVE ABSORBER COATED FOILS FOR SOLAR COLLECTORS  

SciTech Connect (OSTI)

Solar absorber metal foils are discussed in terms of materials and basic processing science. Also included is the use of finished heavy sheet stock for direct fabrication of solar collector panels. Both the adhesives and bonding methods for foils and sheet are surveyed. Developmental and representative commercial foils are used as illustrative examples. As a result it was found that foils can compete economically with batch plating but are limited by adhesive temperature stability. Also absorber foils are very versatile and direct collector fabrication from heavy foils appears very promising.

Lampert, Carl M.

1980-04-01T23:59:59.000Z

136

U-153: EMC Data Protection Advisor Server and Collector Bugs...  

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

53: EMC Data Protection Advisor Server and Collector Bugs Let Remote Users Deny Service U-153: EMC Data Protection Advisor Server and Collector Bugs Let Remote Users Deny Service...

137

Numerical Simulation Study on Transpired Solar Air Collector  

E-Print Network [OSTI]

The unglazed transpired solar air collector is now a well-recognized solar air heater for heating outside air directly. In this article, researchers introduced numerical simulation tools into the solar air collector research area, analyzed...

Wang, C.; Guan, Z.; Zhao, X.; Wang, D.

2006-01-01T23:59:59.000Z

138

Cinema 16 Collection / A.C. Killip (collector)  

E-Print Network [OSTI]

Cinema 16 Collection / A.C. Killip (collector) University of British Columbia Archives #12;Table;Collection Description Cinema 16 Collection / A.C. Killip (collector). 1961-1970. 1.5 cm of textual records

Handy, Todd C.

139

Characteristics of two thermionic converters with oxide collectors  

SciTech Connect (OSTI)

Thermionic converters built with selected metal oxide coatings on their collectors have given enhanced performance at interelectrode spacings greater than 0.25 mm. The capability of such converters to operate efficiently at large interelectrode spacings is of interest for in-core thermionic power systems. Performance data are reported from one converter built with a collector having a coating of molybdenum sublimed in oxygen and a second converter containing an oxidized zirconium collector. The molybdenum oxide collector converter demonstrated enhanced performance.

Smith, E.A.; Huffman, F.N.

1984-08-01T23:59:59.000Z

140

Solar collector apparatus having increased energy rejection during stagnation  

DOE Patents [OSTI]

The disclosure relates to an active solar collector having increased energy rejection during stagnation. The collector's glazing is brought into substantial contact with absorber during stagnation to increase re-emittance and thereby to maintain lower temperatures when the collector is not in operation.

Moore, Stanley W. (Los Alamos, NM)

1983-07-12T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Skagit Valley Research Collection / Ian E. Efford (collector)  

E-Print Network [OSTI]

Skagit Valley Research Collection / Ian E. Efford (collector) Compiled by Christopher Hives (1997 of Creation / Physical Description o Collector's Biographical Sketch o Scope and Content o Notes File List-1982. 13 cm of textual records. 35 photographs. Collector's Biographical Sketch Ian Efford was an ecologist

Handy, Todd C.

142

Solar collector apparatus having increased energy rejection during stagnation  

DOE Patents [OSTI]

An active solar collector having increased energy rejection during stagnation is disclosed. The collector's glazing is brought into substantial contact with absorber during stagnation to increase re-emittance and thereby to maintan lower temperatures when the collector is not in operation.

Moore, S.W.

1981-01-16T23:59:59.000Z

143

History of Education Research Collection / John Neil Sutherland (collector)  

E-Print Network [OSTI]

History of Education Research Collection / John Neil Sutherland (collector) Last revised September / Dates of Creation / Physical Description o Collector's Biographical Sketch o Scope and Content o Notes Research Collection / John Neil Sutherland (collector). 1888- 1909, 1948-1949. 14 cm of textual materials

Handy, Todd C.

144

Automated Verification of Practical Garbage Collectors Chris Hawblitzel  

E-Print Network [OSTI]

Automated Verification of Practical Garbage Collectors Chris Hawblitzel Microsoft Research One Technion Haifa 32000 Israel erez@cs.technion.ac.il Abstract Garbage collectors are notoriously hard in reasoning about reachability in graphs. Several papers have presented verified collectors, but either

Petrank, Erez

145

Accepted Manuscript Title: Metal Current Collector-Free Freestanding  

E-Print Network [OSTI]

Accepted Manuscript Title: Metal Current Collector-Free Freestanding Silicon-Carbon 1D, Metal Current Collector-Free Freestanding Silicon-Carbon 1D Nanocomposites for Ultralight Anodes that apply to the journal pertain. #12;Page 1 of 20 Accepted M anuscript 1 Metal Current Collector

Cui, Yi

146

Formal Derivation of Concurrent Garbage Collectors Dusko Pavlovic1  

E-Print Network [OSTI]

Formal Derivation of Concurrent Garbage Collectors Dusko Pavlovic1 , Peter Pepper2 , and Douglas Rat Berlin and Fraunhofer FIRST, Berlin pepper@cs.tu-berlin.de Abstract. Concurrent garbage collectors are notoriously difficult to implement correctly. Previous approaches to the issue of producing correct collectors

Smith, Douglas R.

147

The Generalized Coupon Collector Problem John Moriarty & Peter Neal  

E-Print Network [OSTI]

The Generalized Coupon Collector Problem John Moriarty & Peter Neal First version: 30 April 2008 of Manchester #12;Applied Probability Trust (25 April 2008) THE GENERALIZED COUPON COLLECTOR PROBLEM JOHN the population is the classic coupon collector problem. We consider the asymptotic distribution Y (appropriately

Sidorov, Nikita

148

Towards Hinted Collection Annotations for decreasing garbage collector pause times  

E-Print Network [OSTI]

Towards Hinted Collection Annotations for decreasing garbage collector pause times Philip Reames are influenced as much by garbage collector behavior as by resource availability. We present an alternate performance not correct- ness. Our hinted collector algorithm uses these hints to identify a subset

Necula, George

149

Contribution ID : 133 The TAG Collector -A Tool for Atlas  

E-Print Network [OSTI]

CHEP04 Contribution ID : 133 The TAG Collector - A Tool for Atlas Code Release Management Thursday 30 Sep 2004 at 10:00 (00h00') The Tag Collector is a web interfaced database application for release distributed geographically. The Tag Collector was designed and implemented during the summer of 2001

Paris-Sud XI, Universit de

150

Community Arts Council of Vancouver Collection / Melva Dwyer (collector)  

E-Print Network [OSTI]

Community Arts Council of Vancouver Collection / Melva Dwyer (collector) Compiled by Christopher L Collection Description o Title / Dates of Creation / Physical Description o Collector's Biographical Sketch o Council of Vancouver Collection, Melva Dwyer (collector). - 1953- 1969. 26 cm of textual records

Handy, Todd C.

151

San Francisco Bay Map Collection / Neal Harlow (collector)  

E-Print Network [OSTI]

San Francisco Bay Map Collection / Neal Harlow (collector) Last revised October 2011 University / Physical Description o Collector's Biographical Sketch o Scope and Content o Notes Catalogue entry (UBC Library catalogue) #12;Collection Description San Francisco Bay Map Collection / Neal Harlow (collector

Handy, Todd C.

152

Optimal Power Train Design of a Hybrid Refuse Collector Vehicle  

E-Print Network [OSTI]

Optimal Power Train Design of a Hybrid Refuse Collector Vehicle Tobias Knoke, Joachim Bcker 5251 60 2212 Abstract-- Due to the stop-and-go drive cycle of refuse collector vehicles, hybrid power), optimization, refuse collector vehicle I. INTRODUCTION Today, hybrid electric vehicles are accepted as a step

Paderborn, Universitt

153

Derivation and Evaluation of Concurrent Collectors Martin T. Vechev1  

E-Print Network [OSTI]

Derivation and Evaluation of Concurrent Collectors Martin T. Vechev1 , David F. Bacon2 , Perry garbage collection algorithm, and show how existing snapshot and incremental update collectors, can that reduces floating garbage while terminating quickly. We have implemented a concurrent collector framework

Grove, David

154

A General Framework for Certifying Garbage Collectors and Their Mutators  

E-Print Network [OSTI]

A General Framework for Certifying Garbage Collectors and Their Mutators Andrew McCreight + Zhong and security of a large portion of the world's missioncritical software. Unfortunately, garbage collectors uniform approach to verifying the safety of both a mutator and its garbage collector in Hoarestyle logic

155

Surface Modification of MCFC Current Collectors for Improved  

E-Print Network [OSTI]

Surface Modification of MCFC Current Collectors for Improved Lifetime Hctor Coln-Mercado, Anand Columbia, SC 29208 #12;State of the Art Current Collectors SS 316 is currently used as a current collector Oxidation of SS occur in the cathode atmosphere SS components (Cr) dissolves in the carbonate

Popov, Branko N.

156

A General Framework for Certifying Garbage Collectors and Their Mutators  

E-Print Network [OSTI]

A General Framework for Certifying Garbage Collectors and Their Mutators Andrew McCreight Zhong and security of a large portion of the world's mission-critical software. Unfortunately, garbage collectors uniform approach to verifying the safety of both a mutator and its garbage collector in Hoare-style logic

157

Adaptive Receding Horizon Control of a Distributed Collector Solar Field  

E-Print Network [OSTI]

Adaptive Receding Horizon Control of a Distributed Collector Solar Field J.M. Igreja, J. M. Lemos for a distributed collector solar field which ex- plicitly explores its distributed parameter character. The plant considered is a distributed collector solar field, being described by a nonlinear hyperbolic partial

Sontag, Eduardo

158

Thermal and electrical performance of a concentrating PV/Thermal collector: results from the ANU CHAPS collector  

E-Print Network [OSTI]

Thermal and electrical performance of a concentrating PV/Thermal collector: results from the ANU CHAPS collector J.S. Coventry, E. Franklin and A. Blakers Centre for Sustainable Energy Systems 0506 E-mail: joe@faceng.anu.edu.au Abstract The combined heat and power solar (CHAPS) collector under

159

Flat-Plate Photovoltaic System Basics | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office0-72.pdf Flash2010-72.pdf Flash2010-72.pdf MoreFlash_2010-49.pdfSystem Basics

160

A Self-Biasing Pulsed Depressed Collector  

SciTech Connect (OSTI)

Depressed collectors have been utilized successfully for many years to improve the electrical efficiency of vacuum electron devices. Increasingly, pulsed, high-peak power accelerator applications are placing a premium on electrical efficiency. As RF systems are responsible for a large percentage of the overall energy usage at accelerator laboratories, methods to improve upon the state-of-the-art in pulsed high-power sources are desired. This paper presents a technique for self-biasing the stages in a multistage depressed collector. With this technique, the energy lost during the rise and fall times of the pulse can be recovered, separate power supplies are not needed, and existing modulators can be retrofitted. Calculations show that significant cost savings can be realized with the implementation of this device in high-power systems. In this paper, the technique is described along with experimental demonstration. (auth)

Kemp, Mark A.; Jensen, Aaron; Neilson, Jeff; /SLAC

2014-05-29T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Collector main replacement at Indianapolis Coke  

SciTech Connect (OSTI)

Indianapolis Coke is a merchant coke producer, supplying both foundry and blast furnace coke to the industry. The facility has three coke batteries: two 3 meter batteries, one Wilputte four divided and one Koppers Becker. Both batteries are underjet batteries and are producing 100% foundry coke at a net coking time of 30.6 hours. This paper deals with the No. 1 coke battery, which is a 72 oven, gun fired, 5 meter Still battery. No. 1 battery produces both foundry and blast furnace coke at a net coking rate of 25.4 hours. No. 1 battery was commissioned in 1979. The battery is equipped with a double collector main. Although many renovations have been completed to the battery, oven machinery and heating system, to date no major construction projects have taken place. Deterioration of the collector main was caused in part from elevated levels of chlorides in the flushing liquor, and temperature fluctuations within the collector main. The repair procedures are discussed.

Sickle, R.R. Van

1997-12-31T23:59:59.000Z

162

Thin film absorber for a solar collector  

DOE Patents [OSTI]

This invention pertains to energy absorbers for solar collectors, and more particularly to high performance thin film absorbers. The solar collectors comprising the absorber of this invention overcome several problems seen in current systems, such as excessive hardware, high cost and unreliability. In the preferred form, the apparatus features a substantially rigid planar frame with a thin film window bonded to one planar side of the frame. An absorber in accordance with the present invention is comprised of two thin film layers that are sealed perimetrically. In a preferred embodiment, thin film layers are formed from a metal/plastic laminate. The layers define a fluid-tight planar envelope of large surface area to volume through which a heat transfer fluid flows. The absorber is bonded to the other planar side of the frame. The thin film construction of the absorber assures substantially full envelope wetting and thus good efficiency. The window and absorber films stress the frame adding to the overall strength of the collector.

Wilhelm, William G. (Cutchogue, NY)

1985-01-01T23:59:59.000Z

163

Instructions for transmitting Collector files to KFS In order for a department's KFS Collector file to be processed, departments must transfer the file to an  

E-Print Network [OSTI]

Instructions for transmitting Collector files to KFS In order for a department's KFS Collector file. The name of the KFS Collector file transferred to the Information Systems server by each department should in .xml. Once a department's Collector file has been processed by KFS it will be removed from

Stephens, Graeme L.

164

Mobile Information Collectors' Trajectory Data Warehouse Design  

E-Print Network [OSTI]

To analyze complex phenomena which involve moving objects, Trajectory Data Warehouse (TDW) seems to be an answer for many recent decision problems related to various professions (physicians, commercial representatives, transporters, ecologists ...) concerned with mobility. This work aims to make trajectories as a first class concept in the trajectory data conceptual model and to design a TDW, in which data resulting from mobile information collectors' trajectory are gathered. These data will be analyzed, according to trajectory characteristics, for decision making purposes, such as new products commercialization, new commerce implementation, etc.

oueslati, wided

2010-01-01T23:59:59.000Z

165

Tensioning device for a stretched membrane collector  

DOE Patents [OSTI]

Disclosed is a solar concentrating collector comprising an elestic membrane member for concentrating sunlight, a frame for holding the membrane member in plane and in tension, and a tensioning means for varying the tension of the membrane member. The tensioning means is disposed at the frame and is adapted to releasably attach the membrane member thereto. The tensioning means is also adapted to uniformly and symmetrically subject the membrane member to stretching forces such that membrane stresses produced thereby are distributed uniformly over a thickness of the membrane member and reciprocal twisting moments are substantially prevented from acting about said frame.

Murphy, L.M.

1984-01-01T23:59:59.000Z

166

The Collector's Brotherhood Problem Using the Newman-Shepp Symbolic Method  

E-Print Network [OSTI]

The Collector's Brotherhood Problem Using the Newman-Shepp Symbolic Abstract. Further computations are made on the traditional coupon collector's problem when the collector shares his harvest with his younger brothers. When the book of the p-th brother

Foata, Dominique

167

A SOLAR TEST COLLECTOR FOR EVALUATION OF BOTH SELECTIVE AND NON-SELECTIVE ABSORBERS  

E-Print Network [OSTI]

6974 Rev. e. ' A SOLAR TEST COLLECTOR FOR EVALUATION OF BOTHFig. L r2 r2 Solar test collector flow chart. Type Slope (-2. ai ei ai/ei SOlar test collector in operation, side view.

Lampert, C.M.

2011-01-01T23:59:59.000Z

168

`Print Networks' Conference, Cambridge 2009 Collectors, Librarians and the Book Trade  

E-Print Network [OSTI]

`Print Networks' Conference, Cambridge 2009 Collectors, Librarians and the Book Trade Reports in establishing an authorial canon. Eighteenth and nineteenth century librarians and collectors were especially conference, `Collectors, Libraries and the Book Tr

Miall, Chris

169

Department of Electrical Engineering Spring 2011 Glass Block Solar Collector  

E-Print Network [OSTI]

to the sponsor. The collector incorporated a solar panel that charged a battery unit. The battery poweredPENNSTATE Department of Electrical Engineering Spring 2011 Glass Block Solar Collector Overview Pittsburgh Corning, a leading manufacturer of architectural glass blocks, wanted to incorporate a solar

Demirel, Melik C.

170

Connectable solar air collectors Solar Energy Centre Denmark  

E-Print Network [OSTI]

Connectable solar air collectors Solar Energy Centre Denmark Danish Technological Institute SEC-R-22 #12;Connectable solar air collectors Søren ?stergaard Jensen Miroslav Bosanac Solar Energy Centre Søren ?stergaard Jensen and Miroslav Bosanac Solar Energy Centre, Danish Technological Institute

171

Connectable solar air collectors Solar Energy Centre Denmark  

E-Print Network [OSTI]

Connectable solar air collectors Solar Energy Centre Denmark Danish Technological Institute SEC-R-22 #12;Connectable solar air collectors Søren ?stergaard Jensen Miroslav Bosanac Solar Energy Centre for renewable energy of the Danish Energy Agency. The project group behind the project was: Solar Energy Centre

172

Test results, Industrial Solar Technology parabolic trough solar collector  

SciTech Connect (OSTI)

Sandia National Laboratories and Industrial Solar Technology are cost-sharing development of advanced parabolic trough technology. As part of this effort, several configurations of an IST solar collector were tested to determine the collector efficiency and thermal losses with black chrome and black nickel receiver selective coatings, combined with aluminized film and silver film reflectors, using standard Pyrex{reg_sign} and anti-reflective coated Pyrex{reg_sign} glass receiver envelopes. The development effort has been successful, producing an advanced collector with 77% optical efficiency, using silver-film reflectors, a black nickel receiver coating, and a solgel anti-reflective glass receiver envelope. For each receiver configuration, performance equations were empirically derived relating collector efficiency and thermal losses to the operating temperature. Finally, equations were derived showing collector performance as a function of input insolation value, incident angle, and operating temperature.

Dudley, V.E. [EG and G MSI, Albuquerque, NM (United States); Evans, L.R.; Matthews, C.W. [Sandia National Labs., Albuquerque, NM (United States)

1995-11-01T23:59:59.000Z

173

Selective flotation of phosphate minerals with hydroxamate collectors  

DOE Patents [OSTI]

A method is disclosed for separating phosphate minerals from a mineral mixture, particularly from high-dolomite containing phosphate ores. The method involves conditioning the mineral mixture by contacting in an aqueous in environment with a collector in an amount sufficient for promoting flotation of phosphate minerals. The collector is a hydroxamate compound of the formula; ##STR1## wherein R is generally hydrophobic and chosen such that the collector has solubility or dispersion properties it can be distributed in the mineral mixture, typically an alkyl, aryl, or alkylaryl group having 6 to 18 carbon atoms. M is a cation, typically hydrogen, an alkali metal or an alkaline earth metal. Preferably, the collector also comprises an alcohol of the formula, R'--OH wherein R' is generally hydrophobic and chosen such that the collector has solubility or dispersion properties so that it can be distributed in the mineral mixture, typically an alkyl, aryl, or alkylaryl group having 6 to 18 carbon atoms.

Miller, Jan D. (Salt Lake City, UT); Wang, Xuming (Salt Lake City, UT); Li, Minhua (Salt Lake City, UT)

2002-01-01T23:59:59.000Z

174

Alignment method for solar collector arrays  

DOE Patents [OSTI]

The present invention is directed to an improved method for establishing camera fixture location for aligning mirrors on a solar collector array (SCA) comprising multiple mirror modules. The method aligns the mirrors on a module by comparing the location of the receiver image in photographs with the predicted theoretical receiver image location. To accurately align an entire SCA, a common reference is used for all of the individual module images within the SCA. The improved method can use relative pixel location information in digital photographs along with alignment fixture inclinometer data to calculate relative locations of the fixture between modules. The absolute locations are determined by minimizing alignment asymmetry for the SCA. The method inherently aligns all of the mirrors in an SCA to the receiver, even with receiver position and module-to-module alignment errors.

Driver, Jr., Richard B

2012-10-23T23:59:59.000Z

175

Glass heat pipe evacuated tube solar collector  

DOE Patents [OSTI]

A glass heat pipe is adapted for use as a solar energy absorber in an evacuated tube solar collector and for transferring the absorbed solar energy to a working fluid medium or heat sink for storage or practical use. A capillary wick is formed of granular glass particles fused together by heat on the inside surface of the heat pipe with a water glass binder solution to enhance capillary drive distribution of the thermal transfer fluid in the heat pipe throughout the entire inside surface of the evaporator portion of the heat pipe. Selective coatings are used on the heat pipe surface to maximize solar absorption and minimize energy radiation, and the glass wick can alternatively be fabricated with granular particles of black glass or obsidian.

McConnell, Robert D. (Lakewood, CO); Vansant, James H. (Tracy, CA)

1984-01-01T23:59:59.000Z

176

Theoretical and experimental investigation of heat pipe solar collector  

SciTech Connect (OSTI)

Heat pipe solar collector was designed and constructed at IROST and its performance was measured on an outdoor test facility. The thermal behavior of a gravity assisted heat pipe solar collector was investigated theoretically and experimentally. A theoretical model based on effectiveness-NTU method was developed for evaluating the thermal efficiency of the collector, the inlet, outlet water temperatures and heat pipe temperature. Optimum value of evaporator length to condenser length ratio is also determined. The modelling predictions were validated using experimental data and it shows that there is a good concurrence between measured and predicted results. (author)

Azad, E. [Iranian Research Organization for Science and Technology, 71 Forsat Avenue Ferdousi sq., Tehran (Iran)

2008-09-15T23:59:59.000Z

177

Conductivity fuel cell collector plate and method of fabrication  

DOE Patents [OSTI]

An improved method of manufacturing a PEM fuel cell collector plate is disclosed. During molding a highly conductive polymer composite is formed having a relatively high polymer concentration along its external surfaces. After molding the polymer rich layer is removed from the land areas by machining, grinding or similar process. This layer removal results in increased overall conductivity of the molded collector plate. The polymer rich surface remains in the collector plate channels, providing increased mechanical strength and other benefits to the channels. The improved method also permits greater mold cavity thickness providing a number of advantages during the molding process.

Braun, James C. (Juno Beach, FL)

2002-01-01T23:59:59.000Z

178

The Collector's Brotherhood Problem Using the Newman-Shepp Symbolic Method  

E-Print Network [OSTI]

The Collector's Brotherhood Problem Using the Newman-Shepp Symbolic Method Dominique Foata,1 Doron collector's problem when the collector shares his harvest with his younger brothers. When the book of the p-th brother of the collector is completed, the books of the younger brothers have certain numbers of empty

Foata, Dominique

179

Realizing high-voltage thin film lateral bipolar transistors on SOI with a collector-tub  

E-Print Network [OSTI]

Realizing high-voltage thin film lateral bipolar transistors on SOI with a collector-tub Sukhendu-dimensional device simulation to examine the effect of a collector tub on the collector breakdown of the SOI based BJTs. This method involves creating a collector tub by etching the buried oxide followed by an n

Kumar, M. Jagadesh

180

A Study of Concurrent Real-Time Garbage Collectors Filip Pizlo  

E-Print Network [OSTI]

A Study of Concurrent Real-Time Garbage Collectors Filip Pizlo Purdue University West Lafayette at the microseconds level. Concurrent collectors also offer much better scalability over incremental collectors. The main prob- lem with concurrent real-time collectors is their complexity. The first concurrent real

Rinetzky, Noam

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Type-Preserving Garbage Collectors Daniel C. Wang Andrew W. Appel  

E-Print Network [OSTI]

Type-Preserving Garbage Collectors Daniel C. Wang Andrew W. Appel Department of Computer Science that acts as a tracing garbage collector for the program. Since the garbage collector is an explicit function, we do not need to provide a trusted garbage collector as a runtime service to manage memory

Appel, Andrew W.

182

The Collector's Brotherhood Problem Using the Newman-Shepp Symbolic Method  

E-Print Network [OSTI]

The Collector's Brotherhood Problem Using the Newman-Shepp Symbolic Method Dominique Foata, 1 Doron coupon collector's problem when the collector shares his harvest with his younger brothers. When the book of the p-th brother of the collector is completed, the books of the younger brothers have certain numbers

Foata, Dominique

183

Debris and Radiation-Induced Damage Effects on EUV Nanolithography Source Collector Mirror Optics Performance  

E-Print Network [OSTI]

Debris and Radiation-Induced Damage Effects on EUV Nanolithography Source Collector Mirror Optics, Argonne, Illinois ABSTRACT Exposure of collector mirrors facing the hot, dense pinch plasma in plasma region of the lamp are known to induce serious damage to nearby collector mirrors. Candidate collector

Harilal, S. S.

184

OMB Control # 0648-0376 Expires 2/29/2012 Fee Collector's Name  

E-Print Network [OSTI]

OMB Control # 0648-0376 Expires 2/29/2012 Fee Collector's Name Mailing Address City State Zip Phone Number Fee Collector's Permit or Buyer Code Settlement Sheet Date Month and Year of Landings Contact the fee collector's name, address, telephone number, fee collector's permit number, date of this fee

185

Efficient solar cooling: first ever non-tracking solar collectors powering a double effect absorption chiller  

E-Print Network [OSTI]

both mounted on the same tracker as the solar collector, aThe solar collector is mounted on a dual axis tracker toSolar collector(s) Pump d 1b 1 NPT 2 kW Calorimeter c 6b Flex pipe Distance NPT Sun Tracker

Poiry, Heather Marie

2011-01-01T23:59:59.000Z

186

Positive electrode current collector for liquid metal cells  

DOE Patents [OSTI]

A current collector for the positive electrode of an electrochemical cell with a positive electrode including a sulfide. The cell also has a negative electrode and a molten salt electrolyte including halides of a metal selected from the alkali metals and the alkaline earth metals in contact with both the positive and negative electrodes. The current collector has a base metal of copper, silver, gold, aluminum or alloys thereof with a coating thereon of iron, nickel, chromium or alloys thereof. The current collector when subjected to cell voltage forms a sulfur-containing compound on the surface thereby substantially protecting the current collector from further attack by sulfur ions during cell operation. Both electroless and electrolytic processes may be used to deposit coatings.

Shimotake, Hiroshi (Hinsdale, IL); Bartholme, Louis G. (Joliet, IL)

1984-01-01T23:59:59.000Z

187

Positive-electrode current collector for liquid-metal cells  

DOE Patents [OSTI]

A current collector for the positive electrode of an electrochemical cell with a positive electrode including a sulfide. The cell also has a negative electrode and a molten salt electrolyte including halides of a metal selected from the alkali metals and the alkaline earth metals in contact with both the positive and negative electrodes. The current collector has a base metal of copper, silver, gold, aluminum or alloys thereof with a coating thereon of iron, nickel, chromium or alloys thereof. The current collector when subjected to cell voltage forms a sulfur-containing compound on the surface thereby substantially protecting the current collector from further attack by sulfur ions during cell operation. Both electroless and electrolytic processes may be used to deposit coatings.

Shimotake, H.; Bartholme, L.G.

1982-09-27T23:59:59.000Z

188

High Performance Lateral Schottky Collector Bipolar Transistors on SOI  

E-Print Network [OSTI]

C-emitter lateral NPM Schottky collector transistor. To study the novel characteristics of these lateral Schottky junction of the proposed lateral PNM (NPM) transistor consists of a Schottky junction between N-base (P

Kumar, M. Jagadesh

189

A Linear Parabolic Trough Solar Collector Performance Model  

E-Print Network [OSTI]

A performance model has been programmed for solar thermal collector based on a linear, tracking parabolic trough reflector focused on a surface-treated metallic pipe receiver enclosed in an evacuated transparent tube: a Parabolic Trough Solar...

Qu, M.; Archer, D.; Masson, S.

2006-01-01T23:59:59.000Z

190

Parabolic trough solar collectors : design for increasing efficiency  

E-Print Network [OSTI]

Parabolic trough collectors are a low cost implementation of concentrated solar power technology that focuses incident sunlight onto a tube filled with a heat transfer fluid. The efficiency and cost of the parabolic trough ...

Figueredo, Stacy L. (Stacy Lee), 1981-

2011-01-01T23:59:59.000Z

191

Role of collector alternating charged patches on transport of...  

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

microsphere in 2-dimensional micromodels was studied. The cylindrical silica collectors within the micromodels were coated with 0, 10, 20, 50 and 100% Fe2O3 patches. The...

192

Self-Cleaning CSP Collectors, Concentrating Solar Power (Fact Sheet)  

SciTech Connect (OSTI)

Boston University is one of the 2012 SunShot CSP R&D awardees for their advanced collectors. This fact sheet explains the motivation, description, and impact of the project.

Not Available

2012-09-01T23:59:59.000Z

193

Project Profile: Advanced High Temperature Trough Collector Developmen...  

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

collector was selected for the Andasol 1 and 2 plants in Spain, the Kuraymat plant in Egypt, and early Solar Millennium commercial projects in the United States. The NTPro design...

194

Nuclear component horizontal seismic restraint  

DOE Patents [OSTI]

A nuclear component horizontal seismic restraint. Small gaps limit horizontal displacement of components during a seismic occurrence and therefore reduce dynamic loadings on the free lower end. The reactor vessel and reactor guard vessel use thicker section roll-forged rings welded between the vessel straight shell sections and the bottom hemispherical head sections. The inside of the reactor guard vessel ring forging contains local vertical dovetail slots and upper ledge pockets to mount and retain field fitted and installed blocks. As an option, the horizontal displacement of the reactor vessel core support cone can be limited by including shop fitted/installed local blocks in opposing alignment with the reactor vessel forged ring. Beams embedded in the wall of the reactor building protrude into apertures in the thermal insulation shell adjacent the reactor guard vessel ring and have motion limit blocks attached thereto to provide to a predetermined clearance between the blocks and reactor guard vessel ring.

Snyder, Glenn J. (Lynchburg, VA)

1988-01-01T23:59:59.000Z

195

Colloid deposition on non-ideal porous media: The influences of collector shape and roughness on the single-collector efficiency  

E-Print Network [OSTI]

Colloid deposition on non-ideal porous media: The influences of collector shape and roughness on the single-collector efficiency James E. Saiers School of Environmental Studies, Yale University, New Haven changes in mineral-grain shape and surface roughness influence the single-collector contact efficiency (h

Saiers, James

196

VERTICALAND HORIZONTAL PARALLEL MOUNTING OF MICRO COMPONENTS ON A SUBSTRATE WITH HIGH SURFACE COVERAGE  

E-Print Network [OSTI]

parts with dimensions of 790µm?790µm?330µm are used for proof-of-concept demonstrations. Each part has of components, even with same dimensions; (6) high surface coverage on a substrate achieved by multi plate Flat plate Water droplets Spacer 1 Spacer 2 Part (a) (b) (c) (d) (e) (f) Flipping over Adhesive

197

Advanced Hybrid Particulate Collector Project Management Plan  

SciTech Connect (OSTI)

As the consumption of energy increases, its impact on ambient air quality has become a significant concern. Recent studies indicate that fine particles from coal combustion cause health problems as well as atmospheric visibility impairment. These problems are further compounded by the concentration of hazardous trace elements such as mercury, cadmium, selenium, and arsenic in fine particles. Therefore, a current need exists to develop superior, but economical, methods to control emissions of fine particles. Since most of the toxic metals present in coal will be in particulate form, a high level of fine- particle collection appears to be the best method of overall air toxics control. However, over 50% of mercury and a portion of selenium emissions are in vapor form and cannot be collected in particulate control devices. Therefore, this project will focus on developing technology not only to provide ultrahigh collection efficiency of particulate air toxic emissions, but also to capture vapor- phase trace metals such as mercury and selenium. Currently, the primary state-of-the-art technologies for particulate control are fabric filters (baghouses) and electrostatic precipitators (ESPs). However, they both have limitations that prevent them from achieving ultrahigh collection of fine particulate matter and vapor-phase trace metals. The objective of this project is to develop a highly reliable advanced hybrid particulate collector (AHPC) that can provide > 99.99 % particulate collection efficiency for all particle sizes between 0.01 and 50 14m, is applicable for use with all U.S. coals, and is cost-0443competitive with existing technologies. Phase I of the project is organized into three tasks: Task I - Project Management, Reporting, and Subcontract Consulting Task 2 - Modeling, Design, and Construction of 200-acfm AHPC Model Task 3 - Experimental Testing and Subcontract Consulting

Miller, S.J.

1995-11-01T23:59:59.000Z

198

Research and Development of a Low Cost Solar Collector  

SciTech Connect (OSTI)

This is a Final Technical Report on the Research and Development completed towards the development of a Low Cost Solar Collector conducted under the DOE cost-sharing award EE-0003591. The objective of this project was to develop a new class of solar concentrators with geometries and manufacturability that could significantly reduce the fully installed cost of the solar collector field for concentrated solar thermal power plants. The goal of the project was to achieve an aggressive cost target of $170/m2, a reduction of up to 50% in the total installed cost of a solar collector field as measured against the current industry benchmark of a conventional parabolic trough. The project plan, and the detailed activities conducted under the scope of the DOE Award project addressed all major drivers that affect solar collector costs. In addition to costs, the study also focused on evaluating technical performance of new collector architectures and compared them to the performance of the industry benchmark parabolic trough. The most notable accomplishment of this DOE award was the delivery of a full-scale integrated design, manufacturing and field installation solution for a new class of solar collector architecture which has been classified as the Bi-Planar Fresnel Collector (BPFC) and may be considered as a viable alternative to the conventional parabolic trough, as well as the conventional Fresnel collectors. This was in part accomplished through the design and development, all the way through fabrication and test validation of a new class of Linear Planar Fresnel Collector architecture. This architecture offers a number of key differentiating features which include a planar light-weight frame geometry with small mass-manufacturable elements utilizing flat mirror sections. The designs shows significant promise in reducing the material costs, fabrication costs, shipping costs, and on-site field installation costs compared to the benchmark parabolic trough, as well as the conventional Fresnel collector. The noteworthy design features of the BPFC architecture include the use of relatively cheaper flat mirrors and a design which allows the mirror support beam sections to act as load-bearing structural elements resulting in more than a 36% reduction in the overall structural weight compared to an optimized parabolic trough. Also, it was shown that the utilization of small mass-produced elements significantly lowers mass-production and logistics costs that can more quickly deliver economies of scale, even for smaller installations while also reducing shipping and installation costs. Moreover, unlike the traditional Fresnel trough the BPFC architecture does not require complex articulating drive mechanisms but instead utilizes a standard parabolic trough hydraulic drive mechanism. In addition to the development of the Bi-Planar Fresnel Collector, an optimized conventional space-frame type parabolic trough was also designed, built, analyzed and field-tested during the first phase of this award. The design of the conventional space-frame parabolic collector was refined with extensive FEA and CFD analysis to reduce material costs and re-designed for simpler fabrication and more accurate lower-cost field assembly. This optimized parabolic trough represented an improvement over the state-of-the art of the traditional parabolic trough architecture and also served as a more rigorous and less subjective benchmark that was used for comparison of new candidate design architectures. The results of the expanded 1st phase of the DOE award project showed that both the Optimized Parabolic Trough and the new Bi-Planar Fresnel Collector design concepts failed to meet the primary objectives for the project of achieving a 50% cost reduction from the industry reference total installed cost of $350/m2. Results showed that the BPFC came in at projected total installed cost of $237/m2 representing a 32% savings compared to the industry benchmark conventional parabolic trough. And the cost reduction obtained by the Optimized Parabolic Trough compared to the

Ansari, Asif; Philip, Lee; Thouppuarachchi, Chirath

2012-08-01T23:59:59.000Z

199

Approximation Theorems Related to the Coupon Collector's Problem  

E-Print Network [OSTI]

This Ph.D. thesis concerns the version of the classical coupon collector's problem, when a collector samples with replacement a set of $n\\ge 2$ distinct coupons so that at each time any one of the $n$ coupons is drawn with the same probability $1/n$. For a fixed integer $m\\in\\{0,1,\\ldots,n-1\\}$, the coupon collector's waiting time $W_{n,m}$ is the random number of draws the collector performs until he acquires $n-m$ distinct coupons for the first time. The basic goal of the thesis is to approximate the distribution of the coupon collector's appropriately centered and normalized waiting time with well-known measures with high accuracy, and in many cases prove asymptotic expansions for the related probability distribution functions and mass functions. The approximating measures are chosen from five different measure families. Three of them -- the Poisson distributions, the normal distributions and the Gumbel-like distributions -- are probability measure families whose members occur as limiting laws in the limit...

Psfai, Anna

2010-01-01T23:59:59.000Z

200

MERCURY CONTROL WITH ADVANCED HYBRID PARTICULATE COLLECTOR  

SciTech Connect (OSTI)

This project was awarded under U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) Program Solicitation DE-PS26-00NT40769 and specifically addressed Technical Topical Area 4-Testing Novel and Less Mature Control Technologies on Actual Flue Gas at the Pilot Scale. The project team included the Energy & Environmental Research Center (EERC) as the main contractor; W.L. Gore & Associates, Inc., as a technical and financial partner; and the Big Stone Power Plant operated by Otter Tail Power Company, host for the field-testing portion of the research. Since 1995, DOE has supported development of a new concept in particulate control called the advanced hybrid particulate collector (AHPC). The AHPC has been licensed to W.L. Gore & Associates, Inc., and has been marketed as the Advanced Hybrid{trademark} filter by Gore. The Advanced Hybrid{trademark} filter combines the best features of electrostatic precipitators (ESPs) and baghouses in a unique configuration, providing major synergism between the two collection methods, both in the particulate collection step and in the transfer of dust to the hopper. The Advanced Hybrid{trademark} filter provides ultrahigh collection efficiency, overcoming the problem of excessive fine-particle emissions with conventional ESPs, and it solves the problem of reentrainment and re-collection of dust in conventional baghouses. The Advanced Hybrid{trademark} filter also appears to have unique advantages for mercury control over baghouses or ESPs as an excellent gas--solid contactor. The objective of the project was to demonstrate 90% total mercury control in the Advanced Hybrid{trademark} filter at a lower cost than current mercury control estimates. The approach included bench-scale batch tests, larger-scale pilot testing with real flue gas on a coal-fired combustion system, and field demonstration at the 2.5-MW (9000-acfm) scale at a utility power plant to prove scale-up and demonstrate longer-term mercury control. An additional task was included in this project to evaluate mercury oxidation upstream of a dry scrubber by using mercury oxidants. This project demonstrated at the pilot-scale level a technology that provides a cost-effective technique to control mercury and, at the same time, greatly enhances fine particulate collection efficiency. The technology can be used to retrofit systems currently employing inefficient ESP technology as well as for new construction, thereby providing a solution for improved fine particulate control combined with effective mercury control for a large segment of the U.S. utility industry as well as other industries.

Ye Zhuang; Stanley J. Miller

2005-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Absorber Alignment Measurement Tool for Solar Parabolic Trough Collectors: Preprint  

SciTech Connect (OSTI)

As we pursue efforts to lower the capital and installation costs of parabolic trough solar collectors, it is essential to maintain high optical performance. While there are many optical tools available to measure the reflector slope errors of parabolic trough solar collectors, there are few tools to measure the absorber alignment. A new method is presented here to measure the absorber alignment in two dimensions to within 0.5 cm. The absorber alignment is measured using a digital camera and four photogrammetric targets. Physical contact with the receiver absorber or glass is not necessary. The alignment of the absorber is measured along its full length so that sagging of the absorber can be quantified with this technique. The resulting absorber alignment measurement provides critical information required to accurately determine the intercept factor of a collector.

Stynes, J. K.; Ihas, B.

2012-04-01T23:59:59.000Z

202

Industry survey for horizontal wells. Final report  

SciTech Connect (OSTI)

An international survey of horizontal environmental wells was performed during May and June of 1993. The purpose of the survey was to provide the environmental industry with an inventory of horizontal environmental wells and information pertaining to the extent of the use of horizontal environmental wells, the variety of horizontal environmental well applications, the types of geologic and hydrogeologic conditions within which horizontal environmental wells have been installed, and the companies that perform horizontal environmental well installations. Other information, such as the cost of horizontal environmental well installations and the results of tests performed on the wells, is not complete but is provided as general information with the caveat that the information should not be used to compare drilling companies. The result of the survey is a catalogue of horizontal environmental wells that are categorized by the objective or use of the wells, the vertical depth of the wells, and the drilling company contracted to install the wells.

Wilson, D.D.; Kaback, D.S. [CDM Federal Programs Corp., Denver, CO (United States); Denhan, M.E. [Westinghouse Savannah River Co., Aiken, SC (United States); Watkins, D. [CDM Federal Programs Corp., Aiken, SC (United States)

1993-07-01T23:59:59.000Z

203

Evaluation of Collector Well Configurations to Model Hydrodynamics in Riverbank Filtration and Groundwater Remediation  

E-Print Network [OSTI]

Collector well designs are necessary to maximize groundwater uptake and riverbank filtration without negatively impacting an aquifer. Unfortunately, there is a lack of information and research regarding the implementation of collector well design...

De Leon, Tiffany Lucinda

2011-10-21T23:59:59.000Z

204

Hematite-based Photo-oxidation of Water Using Transparent Distributed Current Collectors  

E-Print Network [OSTI]

Hematite-based Photo-oxidation of Water Using Transparent Distributed Current Collectors Shannon C layer deposition, Fe2O3, inverse opal, iron oxide, water splitting, distributed current collector 1

205

Experiments and Models Bearing on the Role of Chromite as a Collector of Platinum Group  

E-Print Network [OSTI]

Experiments and Models Bearing on the Role of Chromite as a Collector of Platinum Group Minerals PUBLICATION SEPTEMBER 6, 2008 Chromite is widely recognized to act as a collector for platinum group elements

Mcdonough, William F.

206

How Many Singles, Doubles, Triples, Etc., Should The Coupon Collector Expec* Doron ZEILBERGER 1  

E-Print Network [OSTI]

How Many Singles, Doubles, Triples, Etc., Should The Coupon Collector Expec* *t* * is well known and easy to see that a collector should expect to buy m(1+1=2+1=3+. .+.1=m) gums

Zeilberger, Doron

207

UIUC Collector Erosion and Optical Lifetime Project Results: Time Dependent Exposures  

E-Print Network [OSTI]

UIUC Collector Erosion and Optical Lifetime Project Results: Time Dependent Exposures Darren A is the lifetime of collector optics. Frequent replacement of the mirror system will detract from the economic

Spila, Timothy P.

208

OMB Control # 0648-0376 Expires 2/29/2012 Fee Collector's Name  

E-Print Network [OSTI]

OMB Control # 0648-0376 Expires 2/29/2012 Fee Collector's Name Mailing Address City State Zip Phone BBGS-001WS 1.50 Total Fees ($) Fee Adjustment Instructions: 1. Complete the fee collector's name

209

OMB Control # 0648-0376 Expires 2/29/2012 Fee Collector's Name  

E-Print Network [OSTI]

OMB Control # 0648-0376 Expires 2/29/2012 Fee Collector's Name Mailing Address City State Zip Phone Verification: Instructions: 1. Complete the fee collector's name, address, phone number, crab receiver permit

210

Cost goals for a residential photovoltaicthermal liquid collector system set in three northern locations  

E-Print Network [OSTI]

This study compares the allowable costs for a residential PV/T liquid collector system with those of both PV-only and side-by-side PV and thermal collector systems. Four types of conventional energy systems provide backup: ...

Dinwoodie, Thomas L.

1980-01-01T23:59:59.000Z

211

Efficient solar cooling: first ever non-tracking solar collectors powering a double effect absorption chiller  

E-Print Network [OSTI]

collector, and to the right is a standard evacuated solar tube system.. 12 Figure 3: Left is a linear Fresnel

Poiry, Heather Marie

2011-01-01T23:59:59.000Z

212

NREL Develops New Optical Evaluation Approach for Parabolic Trough Collectors (Fact Sheet)  

SciTech Connect (OSTI)

New analytical method makes it possible to carry out fast evaluation of trough collectors for design purposes.

Not Available

2012-08-01T23:59:59.000Z

213

Immix: A Mark-Region Garbage Collector with Space Efficiency, Fast Collection, and Mutator Performance  

E-Print Network [OSTI]

Immix: A Mark-Region Garbage Collector with Space Efficiency, Fast Collection, and Mutator. The garbage collector therefore directly deter- mines program performance by making a classic space-time trade canonical tracing garbage collectors: semi-space, mark-sweep, and mark-compact each sacrifice one ob

McKinley, Kathryn S.

214

Characterization of collector optic material samples before and after exposure in LPP and DPP EUV sources  

E-Print Network [OSTI]

Characterization of collector optic material samples before and after exposure in LPP and DPP EUV reports on part of the Collector Lifetime and Erosion Project at the University of Illinois at Urbana collector optic in commercial EUV sources to ascertain the fundamental erosion processes and critical

Spila, Timothy P.

215

THE GENESIS SOLAR-WIND COLLECTOR MATERIALS A. J. G. Jurewicz1  

E-Print Network [OSTI]

THE GENESIS SOLAR-WIND COLLECTOR MATERIALS A. J. G. Jurewicz1 , D. S. Burnett2 , R. C. Wiens3 , T. #12;THE GENESIS SOLAR-WIND COLLECTOR MATERIALS Abstract. Genesis (NASA Discovery Mission #5) is a sample return mission. Collectors comprised of ultra-high purity materials will be exposed to the solar

216

iU/riA ii riA Background and Technical Information for Collectors  

E-Print Network [OSTI]

m^ m im^Hii iU/riA ii riA Background and Technical Information for Collectors mmBiological Laboial Circular 111 #12;#12;DUCK STAMP DATA Background and Technical Information for Collectors By Edna N. Sater and conservationists, it aroused widespread interest among stamp collectors, many of whom had not previously collected

217

THE WEIGHTED WORDS COLLECTOR JEREMIE DU BOISBERRANGER, DANI`ELE GARDY, AND YANN PONTY  

E-Print Network [OSTI]

THE WEIGHTED WORDS COLLECTOR JEREMIE DU BOISBERRANGER, DANI`ELE GARDY, AND YANN PONTY Abstract. Motivated by applications in bioinformatics, we consider the word collector problem, i.e. the expected is obtained. The originality of this instance of the non-uniform coupon collector lies in the, potentially

Paris-Sud XI, Universit de

218

Converting PETAL, the 25m solar collector, into an astronomical research facility  

E-Print Network [OSTI]

1 Converting PETAL, the 25m solar collector, into an astronomical research facility Erez N. Ribak and Astronomy, Tel Aviv University, Israel ABSTRACT We propose to modify the solar collector PETAL (Photon collector, which has a relatively poor imaging quality. The conversion can be done by either of two

Ribak, Erez

219

Collector Receiver Design for Data Collection and Localization in Sensor-driven Networks  

E-Print Network [OSTI]

Collector Receiver Design for Data Collection and Localization in Sensor-driven Networks Bharath is communicating, falls on a network of collector nodes which are perpetually monitoring transmissions from with minimal capabilities, while shifting the complexity to a network of collector nodes. While the philosophy

Madhow, Upamanyu

220

Electrochimica Acta 52 (2007) 43174324 Porous current collectors for passive direct methanol fuel cells  

E-Print Network [OSTI]

Electrochimica Acta 52 (2007) 43174324 Porous current collectors for passive direct methanol fuel methanol fuel cell (DMFC) with its cathode current collector made of porous metal foam was investigated that the passive DMFC having the porous current collector yielded much higher and much more stable performance than

Zhao, Tianshou

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Genetic algorithms used for the optimization of light-emitting diodes and solar thermal collectors  

E-Print Network [OSTI]

Genetic algorithms used for the optimization of light-emitting diodes and solar thermal collectors developed for the optimization of light-emitting diodes (LED) and solar thermal collectors. The surface a light-extraction efficiency of only 3.7%). The solar thermal collector we considered consists

Mayer, Alexandre

222

Characterization of collector optic material samples before and after exposure in laser  

E-Print Network [OSTI]

Characterization of collector optic material samples before and after exposure in laser produced: collector optics; EUV; laser produced plasma; discharge produced plasma; erosion; debris mitigation. Paper of the Collector Lifetime and Erosion Project at the University of Illinois at Urbana- Champaign UIUC ,1

Spila, Timothy P.

223

TITLE: Preliminary Examination of Impact Craters on Al Foil from the Stardust Interstellar Dust Collector  

E-Print Network [OSTI]

the Stardust Interstellar Dust Collector SESSION TYPE: Poster; SESSION TITLE: P43A. Extraterrestrial Dust@home dusters ABSTRACT BODY: The Interstellar Dust Collector from the NASA Stardust mission provides) stream in order to obtain such information as grain composition and microstructure. The collector

224

Plan for Can Collectors on UBC Campus PLAN 503: Assignment 2  

E-Print Network [OSTI]

Plan for Can Collectors on UBC Campus PLAN 503: Assignment 2 School of Community and Regional to the issue of can collectors or "binners" on UBC campus. The research is part of a longer plan, which necessity as their primary motivation. According to interviews to some can collectors in Vancouver, major

225

A Study of the Scalability of Stop-the-world Garbage Collectors on Multicores  

E-Print Network [OSTI]

A Study of the Scalability of Stop-the-world Garbage Collectors on Multicores Lokesh Gidra, Ga challenges for garbage collectors (GCs). In particular, throughput-oriented stop- the-world algorithms-oriented garbage collector of OpenJDK 7, called Parallel Scavenge. We identify its bottlenecks, and show how

Paris-Sud XI, Universit de

226

Handles Revisited: Optimising Performance and Memory Costs in a Real-Time Collector  

E-Print Network [OSTI]

Handles Revisited: Optimising Performance and Memory Costs in a Real-Time Collector Tomas Kalibera garbage collectors must update all references to ob- jects they move. Updating is a lengthy operation references have been updated which, in a real-time collector, must be done incrementally. One solution

Kent, University of

227

NON-RANDOM SPATIAL DISTRIBUTION OF IMPACTS IN THE STARDUST COMETARY COLLECTOR. Andrew J. Westphal1  

E-Print Network [OSTI]

NON-RANDOM SPATIAL DISTRIBUTION OF IMPACTS IN THE STARDUST COMETARY COLLECTOR. Andrew J. Westphal1/Wild2[1] at a relative speed of 6.1 km sec-1 . Cometary dust was collected at in a 0.1 m2 collector to earth and were recovered. We report the discovery that impacts in the Stardust cometary collector

228

Effect of collector lateral scaling on performance of high-speed SiGe HBTs  

E-Print Network [OSTI]

Effect of collector lateral scaling on performance of high-speed SiGe HBTs with fT > 300 GHz J.-S. Rieh, M. Khater, A. Jeseph, G. Freeman and D. Ahlgren The effect of collector lateral scaling followed by a degradation with decreasing collector width. Possible causes behind the observed trend

Rieh, Jae-Sung

229

A Lock-Free, Concurrent, and Incremental Stack Scanning for Garbage Collectors  

E-Print Network [OSTI]

A Lock-Free, Concurrent, and Incremental Stack Scanning for Garbage Collectors Gabriel Kliot Bjarne.Steensgaard@microsoft.com Abstract Two major efficiency parameters for garbage collectors collectors with as short as possible pause times. Pause lengths have decreased significantly during the years

Petrank, Erez

230

CBC Reduction in InP Heterojunction Bipolar Transistor with Selectively Implanted Collector Pedestal  

E-Print Network [OSTI]

CBC Reduction in InP Heterojunction Bipolar Transistor with Selectively Implanted Collector-3812 Fax: (805) 893-8714 Email: yingda@ece.ucsb.edu The base-collector junction capacitance (Cbc) is a key with a collector pedestal under the HBT's intrinsic region by using selective ion implantation and MBE regrowth

Rodwell, Mark J. W.

231

hal-00177601,version2-30Oct2007 A closed parabolic trough solar collector  

E-Print Network [OSTI]

hal-00177601,version2-30Oct2007 A closed parabolic trough solar collector Gang Xiao 30th October of closed-box parabolic trough concentrated solar collector. By accepting an optical loss of a few, and the potential of improvement. The basic design of the closed collector is given in Section 2. It is a hermetic

Paris-Sud XI, Universit de

232

Comparative efficiencies of solar energy collectors Laboratoire de Technologie Optique  

E-Print Network [OSTI]

57 Comparative efficiencies of solar energy collectors M. Duban Laboratoire de Technologie Optique the solar energy during a day or a year, independant of their dimensions, the amount of energy collected seuils K = 0 et K = 0,5 (K étant le rapport entre 1'energie minimum nécessaire pour un fonctionnement

Boyer, Edmond

233

Evaluation of solar collectors for heat pump applications. Final report  

SciTech Connect (OSTI)

The study was initiated to evaluate the potential utility of very low cost (possibly unglazed and uninsulated) solar collectors to serve as both heat collection and rejection devices for a liquid source heat pump. The approach consisted of exercising a detailed analytical simulation of the complete heat pump/solar collector/storage system against heating and cooling loads derived for typical single-family residences in eight US cities. The performance of each system was measured against that of a conventional air-to-air heat pump operating against the same loads. In addition to evaluation of solar collector options, the study included consideration of water tanks and buried pipe grids to provide thermal storage. As a supplement to the analytical tasks, the study included an experimental determination of night sky temperature and convective heat transfer coefficients for surfaces with dimensions typical of solar collectors. The experiments were conducted in situ by placing the test apparatus on the roofs of houses in the Denver, Colorado, area. (MHR)

Skartvedt, Gary; Pedreyra, Donald; McMordle, Dr., Robert; Kidd, James; Anderson, Jerome; Jones, Richard

1980-08-01T23:59:59.000Z

234

PERFORMANCE OF A CONCENTRATING PHOTOVOLTAIC/THERMAL SOLAR COLLECTOR  

E-Print Network [OSTI]

increased solar energy conversion and potential cost benefits (Fujisawa and Tani, 1997, 2001, Huang et alPERFORMANCE OF A CONCENTRATING PHOTOVOLTAIC/THERMAL SOLAR COLLECTOR Joe S Coventry Centre for Sustainable Energy Systems, Australian National University, Canberra, 0200, Australia +612 6125 3976, +612

235

A solar concentrating photovoltaic / thermal collector J.S. Coventry  

E-Print Network [OSTI]

A solar concentrating photovoltaic / thermal collector J.S. Coventry Centre for Sustainable Energy.Coventry@anu.edu.au Abstract Australia is a good location for solar concentrator applications. Current activities in Australia OF THE SOLAR RESOURCE IN AUSTRALIA Australia has relatively high solar insolation, as shown in figure 1

236

Wind load design methods for ground-based heliostats and parabolic dish collectors  

SciTech Connect (OSTI)

The purpose of this design method is to define wind loads on flat heliostat and parabolic dish collectors in a simplified form. Wind loads are defined for both mean and peak loads accounting for the protective influence of upwind collectors, wind protective fences, or other wind-blockage elements. The method used to define wind loads was to generalize wind load data obtained during tests on model collectors, heliostats or parabolic dishes, placed in a modeled atmospheric wind in a boundary-layer wind-tunnel at Colorado State University. For both heliostats and parabolic dishes, loads are reported for solitary collectors and for collectors as elements of a field. All collectors were solid with negligible porosity; thus the effects of porosity in the collectors is not addressed.

Peterka, J.A.; Derickson, R.G. [Colorado State Univ., Fort Collins, CO (United States). Fluid Dynamics and Diffusion Lab.

1992-09-01T23:59:59.000Z

237

Spray drift collector efficiency: Assessment of deposition on 2 mm diameter PVC line in a wind tunnel  

E-Print Network [OSTI]

Spray drift collector efficiency: Assessment of deposition on 2 mm diameter PVC line in a wind and Miller and Hadfield, 1989) and to trap it on passive collectors. This method is cheap and easy to set-up but the efficiency of the collectors has to be evaluated. The cylindrical collectors with a diameter of 2 mm

Paris-Sud XI, Universit de

238

Virtual Laboratories > 12. Finite Sampling Models > 1 2 3 4 5 6 7 8 9 7. The Coupon Collector Problem  

E-Print Network [OSTI]

Virtual Laboratories > 12. Finite Sampling Models > 1 2 3 4 5 6 7 8 9 7. The Coupon Collector of a coupon collector: each time the collector buys a certain product (bubble gum or Cracker Jack, for example} In terms of the coupon collector, this random variable gives the number of products required to get k

Demeio, Lucio

239

Materials selection for the US INTOR divertor collector plate  

SciTech Connect (OSTI)

The divertor collector plate in the INTOR reactor will be subjected to high heat, particle, and neutron fluxes, making it the most severely damaged torus component. The collector plate is composed of a protection plate, which is directly exposed to the particle flux, and a heat sink which provides support for the protection plate and carries the water coolant. The high-Z refractory metals have been considered for use as the protection plate material, and austenitic stainless steels and copper alloys have been considered as the heat sink material. Tungsten and Type 316 stainless steels have been selected for the protection plate and heat sink, respectively. The protection plate has a sputtering lifetime of 1.75 y at a 50% duty factor, while the heat sink is expected to last the lifetime of the reactor.

Mattas, R.F.; Misra, B.; Smith, D.L.; Morgan, G.D.; Delaney, M.; Gold, R.

1981-01-01T23:59:59.000Z

240

Markov Modeling of Cooperative Multiplayer Coupon Collectors' Problems  

E-Print Network [OSTI]

The paper introduces a modified version of the classical Coupon Collector's Problem entailing exchanges and cooperation between multiple players. Results of the development show that, within a proper Markov framework, the complexity of the Cooperative Multiplayer Coupon Collectors' Problem can be attacked with an eye to the modeling of resource harvesting and sharing within the context of Next Generation Network. The cost of cooperation is computed in terms of exchange protocol burden and found to be dependent on only ensemble parameters such as the number of players and the number of coupons but not on the detailed collection statistics. The benefits of cooperation are quantified in terms of reduction of the average number of actions before collection completion.

Rovatti, R; Mazzini, G

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Lightweight diaphragm mirror module system for solar collectors  

DOE Patents [OSTI]

A mirror module system is provided for accurately focusing solar radiation on a point or a line as defined by an array of solar collectors. Each mirror module includes a flexible membrane stretched over a frame in a manner similar to that of a drum or a trampoline and further includes a silvered glass or plastic mirror for forming an optical reflecting surface. The configuration of the optical reflecting surface is variably adjustable to provide for the accurate focusing of the solar energy on a given collector array, e.g., a point or a linear array arrangement. The flexible mirror-membrane combination is lightweight to facilitate installation and reduce system cost yet structurally strong enough to provide for the precise focusing of the incident solar radiation in a semi-rigid reflector system in which unwanted reflector displacement is minimized.

Butler, Barry L. (Golden, CO)

1985-01-01T23:59:59.000Z

242

Lightweight diaphragm mirror module system for solar collectors  

DOE Patents [OSTI]

A mirror module system is provided for accurately focusing solar radiation on a point or a line as defined by an array of solar collectors. Each mirror module includes a flexible membrane stretched over a frame in a manner similar to that of a drum or a trampoline and further includes a silvered glass or plastic mirror for forming an optical reflecting surface. The configuration of the optical reflecting surface is variably adjustable to provide for the accurate focusing of the solar energy on a given collector array, e.g., a point or a linear array arrangement. The flexible mirror-membrane combination is lightweight to facilitate installation and reduce system cost yet structurally strong enough to provide for the precise focusing of the incident solar radiation in a semi-rigid reflector system in which unwanted reflector displacement is minimized.

Butler, B.L.

1984-01-01T23:59:59.000Z

243

Flat Plate PV Module Eligibility Listing Procedure Updated 6/2/14 Senate Bill 1 (SB1) defines the solar incentive programs for California, and flat plate PV  

E-Print Network [OSTI]

Commission. 3 . The manufacturer gets their product certified to ANSI/UL 1703 by a NRTL whose OSHA. The manufacturer emails a copy of the ANSI/UL 1703 certification indicating authorization to apply the NRTL's mark (the NRTL). The multiple listing process is how the listing agency certifies privatelabeled products

244

Electrochemically Stable Cathode Current Collectors for Rechargeable Magnesium Batteries  

SciTech Connect (OSTI)

Rechargeable Mg batteries are attractive energy storage systems and could bring cost-effective energy solutions. Currently, however, no practical cathode current collectors that can withstand high voltages in Mg2+ electrolytes has been identified and therefore cathode research is greatly hindered. Here we identified that two metals, Mo and W, are electrochemically stable through formation of surface passive layers. The presented results could have significant impacts on the developments of high voltage Mg batteries.

Cheng, Yingwen; Liu, Tianbiao L.; Shao, Yuyan; Engelhard, Mark H.; Liu, Jun; Li, Guosheng

2014-01-01T23:59:59.000Z

245

Assessment of existing studies of wind loading on solar collectors  

SciTech Connect (OSTI)

In developing solar collectors, wind loading is the major structural design consideration. Wind loading investigations have focused on establishing safe bounds for steady state loading and verifying rational but initial and conservative design approaches for the various solar collector concepts. As such, the effort has been very successful, and has contributed greatly to both the recognition and qualitative understanding of many of the physical phenomena involved. Loading coefficients corresponding to mean wind velocities have been derived in these prior studies to measure the expected structural loading on the various solar collectors. Current design and testing procedures for wind loading are discussed. The test results corresponding to numerous wind tests on heliostats, parabolic troughs, parabolic dishes, and field mounted photovoltaic arrays are discussed and the applicability of the findings across the various technologies is assessed. One of the most significant consistencies in the data from all the technologies is the apparent benefit provided by fences and field shielding. Taken in toto, these data show that load reductions of three or possibly more seem feasible, though a more thorough understanding of the phenomena involved must be attained before this benefit can be realized. It is recommended that the required understanding be developed to take advantage of this benefit and that field tests be conducted to correlate with both analyses and tests.

Murphy, L. M.

1981-02-01T23:59:59.000Z

246

Macroscopic Subdivision of Silica Aerogel Collectors for Sample Return Missions  

SciTech Connect (OSTI)

Silica aerogel collector tiles have been employed for the collection of particles in low Earth orbit and, more recently, for the capture of cometary particles by NASA's Stardust mission. Reliable, reproducible methods for cutting these and future collector tiles from sample return missions are necessary to maximize the science output from the extremely valuable embedded particles. We present a means of macroscopic subdivision of collector tiles by generating large-scale cuts over several centimeters in silica aerogel with almost no material loss. The cut surfaces are smooth and optically clear allowing visual location of particles for analysis and extraction. This capability is complementary to the smaller-scale cutting capabilities previously described [Westphal (2004), Ishii (2005a, 2005b)] for removing individual impacts and particulate debris in tiny aerogel extractions. Macroscopic cuts enable division and storage or distribution of portions of aerogel tiles for immediate analysis of samples by certain techniques in situ or further extraction of samples suited for other methods of analysis.

Ishii, H A; Bradley, J P

2005-09-14T23:59:59.000Z

247

New Optical Evaluation Approach for Parabolic Trough Collectors: First-Principle OPTical Intercept Calculation  

SciTech Connect (OSTI)

A new analytical method -- First-principle OPTical Intercept Calculation (FirstOPTIC) -- is presented here for optical evaluation of trough collectors. It employs first-principle optical treatment of collector optical error sources and derives analytical mathematical formulae to calculate the intercept factor of a trough collector. A suite of MATLAB code is developed for FirstOPTIC and validated against theoretical/numerical solutions and ray-tracing results. It is shown that FirstOPTIC can provide fast and accurate calculation of intercept factors of trough collectors. The method makes it possible to carry out fast evaluation of trough collectors for design purposes. The FirstOPTIC techniques and analysis may be naturally extended to other types of CSP technologies such as linear-Fresnel collectors and central-receiver towers.

Zhu, G.; Lewandowski, A.

2012-11-01T23:59:59.000Z

248

What kind of a business is this? Reminiscences of the book trade and book collectors  

E-Print Network [OSTI]

of the Book Trade and Book Collectors by Jacob Zeitlin 1959 paper, 50c The Bibliographical Way by Fredson Bowers 1959 paper, 50c What kind of a business is this? Reminiscences of the Book Trade and Book Collectors JACOB ZEITLIN THE UNIVERSITY... Lecture Jacob Zeitlin. What Kind of a Business is This? Remi niscences of the Book Trade and Book Collectors. De livered at the University of Kansas, January 17, 1958. Sixth Lecture Fredson Bowers. The Bibliographical Way. Delivered at the University...

Zeitlin, Jacob

1959-01-01T23:59:59.000Z

249

Off-peak summer performance enhancement for rows of fixed solar thermal collectors using reflective surfaces.  

E-Print Network [OSTI]

??The possibility of increasing the efficiency of fixed solar thermal collectors without greatly adding to the cost or complexity of the overall solar collection system (more)

Armenta, Casiano

2011-01-01T23:59:59.000Z

250

Efficient solar cooling: first ever non-tracking solar collectors powering a double effect absorption chiller  

E-Print Network [OSTI]

to buffer the incoming solar power to the glycol loop so asarea the available power to the solar thermal collector was

Poiry, Heather Marie

2011-01-01T23:59:59.000Z

251

Equivalencing the Collector System of a Large Wind Power Plant: Preprint  

SciTech Connect (OSTI)

This paper focuses on our effort to develop an equivalent representation of a wind power plant collector system for power system planning studies.

Muljadi, E.; Butterfield, C. P.; Ellis, A.; Mechenbier, J.; Hochheimer, J.; Young, R.; Miller, N.; Delmerico, R.; Zavadil, R.; Smith, J. C.

2006-01-01T23:59:59.000Z

252

Bakken shale typifies horizontal drilling success  

SciTech Connect (OSTI)

Given the favorable production response that has been obtained from horizontal drilling in vertical- fractured reservoirs such as the Bakken shale and, more recently, the Austin chalk, industry interest in this technology has mushroomed in the U.S. Indeed, it is difficult to find a good-sized oil company these days that is not involved in a horizontal drilling project or is giving it serious consideration. In response to growing evidence of successful field applications, the realization is dawning on the investment community that horizontal drilling represents a significant technological development with positive implications for both the exploration and production business, and the oilfield services industry.

Leibman, P.R. (Petrie Parkman and Co., Denver, CO (US))

1990-12-01T23:59:59.000Z

253

Simple solar spectral model for direct and diffuse irradiance on horizontal and tilted planes at the earth's surface for cloudless atmospheres  

SciTech Connect (OSTI)

A new, simple model for calculating clear-sky direct and diffuse spectral irradiance on horizontal and tilted surfaces is presented. The model is based on previously reported simple algorithms and on comparisons with rigorous radiative transfer calculations and limited outdoor measurements. Equations for direct normal irradiance are outlined; and include: Raleigh scattering; aerosol scattering and absorption; water vapor absorption; and ozone and uniformly mixed gas absorption. Inputs to the model include solar zenith angle, collector tilt angle, atmospheric turbidity, amount of ozone and precipitable water vapor, surface pressure, and ground albedo. The model calculates terrestrial spectra from 0.3 to 4.0 ..mu..m with approximately 10 nm resolution. A major goal of this work is to provide researchers with the capability to calculate spectral irradiance for different atmospheric conditions and different collector geometries using microcomputers. A listing of the computer program is provided.

Bird, R.; Riordan, C.

1984-12-01T23:59:59.000Z

254

Optimization of a hybrid solar energy collector system  

E-Print Network [OSTI]

OPTIMIZATION OF A HYBRID SOLAR ENERGY COLLECTOR SYSTEM A Thesis by ALAN M. SHI NEMAN Submitted to the Graduate College of Texas A&N University in partial fulfillment of the requirement for the degree MASTER OF SCIENCE May 1981 Major Subject...: Mechanical Engineering THE STRUCTURAL IMPACT OF COMMODITY FARM PROGRAMS ON FARMS IN THE SOUTHERN TEXAS HIGH PLAINS A Thesis by CHRISTINA KAY SHIRLEY Submitted to the Graduate College of Texas A&M University in par'tial fulfillment of the requirement...

Shinkman, Alan M.

1981-01-01T23:59:59.000Z

255

WILLA Z. SILVERMAN. The New Bibliopolis: French Book Collectors and the Culture of Print, 1880-1914. Toronto: University of Toronto Press, 2008.  

E-Print Network [OSTI]

New Bibliopolis: French Book Collectors and the Culture ofNew Bibliopolis: French Book Collectors and the Culture ofUzanne and the other book collectors haunting the pages of

Everton, Elizabeth

2008-01-01T23:59:59.000Z

256

Horizontal gene transfer in Bacteroides fragilis  

E-Print Network [OSTI]

Horizontal gene transfer (HGT) is one of the man driving forces of evolution in prokaryotes, and can also promote within-strain variation of bacterial species. The genomes of three previously sequenced Bacteroides fragilis ...

Jobling, Kelly Louise

2014-11-27T23:59:59.000Z

257

Particle Impact Damping in the Horizontal Plane  

E-Print Network [OSTI]

Particle impact damping is measured for a cantilevered beam vibrating freely in the horizontal plane. Several particle configurations are investigated beginning with a single particle and progressing to multiple layers of particles. The effects...

Witt, Bryan

2012-07-16T23:59:59.000Z

258

Natural Gas Horizontal Well Control Act (West Virginia)  

Broader source: Energy.gov [DOE]

The Natural Gas Horizontal Well Control Act regulates the construction, alteration, enlargement, abandonment and removal of horizontal wells and associated water and wastewater use and storage. The...

259

Cable tensioned membrane solar collector module with variable tension control  

DOE Patents [OSTI]

Disclosed is a solar collector comprising a membrane for concentrating sunlight, a plurality of elongated structural members for suspending the membrane member thereon, and a plurality of control members for adjustably tensioning the membrane member, as well as for controlling a focus produced by the membrane members. Each control member is disposed at a different corresponding one of the plurality of structural members. The collector also comprises an elongated flexible tensioning member, which serves to stretch the membrane member and to thereafter hold it in tension, and a plurality of sleeve members, which serve to provide the membrane member with a desired surface contour during tensioning of the membrane member. The tensioning member is coupled to the structural members such that the tensioning member is adjustably tensioned through the structural members. The tensioning member is also coupled to the membrane member through the sleeve members such that the sleeve members uniformly and symmetrically stretch the membrane member upon applying tension to the tensioning member with the control members.

Murphy, Lawrence M. (Lakewood, CO)

1985-01-01T23:59:59.000Z

260

Cable tensioned membrane solar collector module with variable tension control  

DOE Patents [OSTI]

Disclosed is a solar collector comprising a membrane member for concentrating sunlight, a plurality of elongated structural members for suspending the membrane member thereon, and a plurality of control members for adjustably tensioning the membrane member, as well as for controlling a focus produced by the membrane members. Each control member is disposed at a different corresponding one of the plurality of structural members. The collector also comprises an elongated flexible tensioning member, which serves to stretch the membrane member and to thereafter hold it in tension, and a plurality of sleeve members which serve to provide the membrane member with a desired surface contour during tensioning of the membrane member. The tensioning member is coupled to the structural members such that the tensioning member is adjustably tensioned through the structural members. The tensioning member is also coupled to the membrane member through the sleeve members such that the sleeve members uniformly and symmetrically stretch the membrane member upon applying tension to the tensioning member with the control members.

Murphy, L.M.

1984-01-09T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Integral collector storage system with heat exchange apparatus  

DOE Patents [OSTI]

The present invention relates to an integral solar energy collector storage systems. Generally, an integral collector storage system includes a tank system, a plurality of heat exchange tubes with at least some of the heat exchange tubes arranged within the tank system, a first glazing layer positioned over the tank system and a base plate positioned under the tank system. In one aspect of the invention, the tank system, the first glazing layer an the base plate each include protrusions and a clip is provided to hold the layers together. In another aspect of the invention, the first glazing layer and the base plate are ribbed to provide structural support. This arrangement is particularly useful when these components are formed from plastic. In yet another aspect of the invention, the tank system has a plurality of interconnected tank chambers formed from tubes. In this aspect, a supply header pipe and a fluid return header pipe are provided at a first end of the tank system. The heat exchange tubes have inlets coupled to the supply header pipe and outlets coupled to the return header pipe. With this arrangement, the heat exchange tubes may be inserted into the tank chambers from the first end of the tank system.

Rhodes, Richard O.

2004-04-20T23:59:59.000Z

262

Slope Error Measurement Tool for Solar Parabolic Trough Collectors: Preprint  

SciTech Connect (OSTI)

The National Renewable Energy Laboratory (NREL) has developed an optical measurement tool for parabolic solar collectors that measures the combined errors due to absorber misalignment and reflector slope error. The combined absorber alignment and reflector slope errors are measured using a digital camera to photograph the reflected image of the absorber in the collector. Previous work using the image of the reflection of the absorber finds the reflector slope errors from the reflection of the absorber and an independent measurement of the absorber location. The accuracy of the reflector slope error measurement is thus dependent on the accuracy of the absorber location measurement. By measuring the combined reflector-absorber errors, the uncertainty in the absorber location measurement is eliminated. The related performance merit, the intercept factor, depends on the combined effects of the absorber alignment and reflector slope errors. Measuring the combined effect provides a simpler measurement and a more accurate input to the intercept factor estimate. The minimal equipment and setup required for this measurement technique make it ideal for field measurements.

Stynes, J. K.; Ihas, B.

2012-04-01T23:59:59.000Z

263

SIMULATION OF THE THERMAL INTERACTION BETWEEN A BUILDING INTEGRATED PHOTOVOLTAIC COLLECTOR AND AN AIR-  

E-Print Network [OSTI]

AND AN AIR- SOURCE HEAT PUMP B. Filliard1 ; A. Guiavarch1 ; M. Jabbour1 . 1: MINES ParisTech ­ CEP ­ Centre simultaneously equipped with air-source heat pumps and photovoltaic collectors is constantly increasing of the heat pump is installed in the attic just beneath the PV collector, which preheats the incoming air

Boyer, Edmond

264

Energy-based Control of a Distributed Solar Collector Tor A. Johansena  

E-Print Network [OSTI]

Energy-based Control of a Distributed Solar Collector Field Tor A. Johansena Camilla Storaaa that the primary energy source, solar radiation, cannot be manipulated. The distributed solar collector eld may, Norway. Model-based control of the outlet temperature of a distributed solar col- lector eld is studied

Johansen, Tor Arne

265

Solar Energy to Drive Absorption Cooling Systems Suitable for Small Building Applications  

E-Print Network [OSTI]

results and an overview of the performance of low capacity single stage and half-effect absorption cooling systems, suitable for residential and small building applications. The primary heat source is solar energy supplied from flat plate collectors...

Gomri, R.

2010-01-01T23:59:59.000Z

266

Attaching solar collectors to a structural framework utilizing a flexible clip  

DOE Patents [OSTI]

Methods and apparatuses described herein provide for the attachment of solar collectors to a structural framework in a solar array assembly. A flexible clip is attached to either end of each solar collector and utilized to attach the solar collector to the structural framework. The solar collectors are positioned to allow a member of the framework to engage a pair of flexible clips attached to adjacent solar collectors during assembly of the solar array. Each flexible clip may have multiple frame-engaging portions, each with a flange on one end to cause the flexible clip to deflect inward when engaged by the framework member during assembly and to guide each of the frame-engaging portions into contact with a surface of the framework member for attachment.

Kruse, John S

2014-03-25T23:59:59.000Z

267

Method Of Making Solar Collectors By In-Situ Encapsulation Of Solar Cells  

DOE Patents [OSTI]

A method of making solar collectors by encapsulating photovoltaic cells within a base of an elongated solar collector wherein heat and pressure are applied to the cells in-situ, after an encapsulating material has been applied. A tool is fashioned having a bladder expandable under gas pressure, filling a region of the collector where the cells are mounted. At the same time, negative pressure is applied outside of the bladder, enhancing its expansion. The bladder presses against a platen which contacts the encapsulated cells, causing outgassing of the encapsulant, while heat cures the encapsulant. After curing, the bladder is deflated and the tool may be removed from the collector and base and reflective panels put into place, if not already there, thereby allowing the solar collector to be ready for use.

Carrie, Peter J. (Toronto, CA); Chen, Kingsley D. D. (Markham, CA)

2000-10-24T23:59:59.000Z

268

Review of state-of-the-art of solar collector corrosion processes. Task 1 of solar collector studies for solar heating and cooling applications. Final technical progress report  

SciTech Connect (OSTI)

The state-of-the-art of solar collector corrosion processes is reviewed, and Task 1 of a current research program on use of aqueous heat transfer fluids for solar heating and cooling is summarized. The review of available published literature has indicated that lack of quantitative information exists relative to collector corrosion at the present time, particularly for the higher temperature applications of solar heating and cooling compared to domestic water heating. Solar collector systems are reviewed from the corrosion/service life viewpoint, with emphasis on various applications, collector design, heat transfer fluids, and freeze protection methods. Available information (mostly qualitative) on collector corrosion technology is reviewed to indicate potential corrosion problem areas and corrosion prevention practices. Sources of limited quantitative data that are reviewed are current solar applications, research programs on collector corrosion, and pertinent experience in related applications of automotive cooling and non-solar heating and cooling. A data bank was developed to catalog corrosion information. Appendix A of this report is a bibliography of the data bank, with abstracts reproduced from presently available literature accessions (about 220). This report is presented as a descriptive summary of information that is contained in the data bank.

Clifford, J E; Diegle, R B

1980-04-11T23:59:59.000Z

269

Advanced Manufacture of Second-Surface, Silvered Glass Reflectors for High-Performance, Low-Cost CSP Collector Systems  

Broader source: Energy.gov [DOE]

Advanced Manufacture of Second-Surface, Silvered Glass Reflectors for High-Performance, Low-Cost CSP Collector Systems

270

Analysis of Rotating Collectors from the Private Region of JET with Carbon Wall and Metallic ITER-Like Wall  

E-Print Network [OSTI]

Analysis of Rotating Collectors from the Private Region of JET with Carbon Wall and Metallic ITER-Like Wall

271

Proc. 20th Symp. Principles of Programming Languages, 1993, pages 113--123. A concurrent, generational garbage collector  

E-Print Network [OSTI]

, generational garbage collector for a multithreaded implementation of ML Damien Doligez Xavier Leroy ' Ecole and implementation of a ``quasi realtime'' garbage collector for Concurrent Caml Light, an implementation of ML with threads. This twogeneration system combines a fast, asynchronous copying collector on the young

Leroy, Xavier

272

DT RESULTS OF TFTR'S ALPHA COLLECTOR H. W. HERRMANN, S. J. ZWEBEN, D. S. DARROW, J. R. TIMBERLAKE  

E-Print Network [OSTI]

DT RESULTS OF TFTR'S ALPHA COLLECTOR H. W. HERRMANN, S. J. ZWEBEN, D. S. DARROW, J. R. TIMBERLAKE Physics Hamilton, Ontario, Canada ABSTRACT. An escaping alpha collector probe has been developed for TFTR the range of alphas implanted into nickel foils located within the alpha collector. Exposedsamples have been

273

Zhang et al Effect of a collector bag for measurement of postpartum blood loss after vaginal1  

E-Print Network [OSTI]

Zhang et al 1 Effect of a collector bag for measurement of postpartum blood loss after vaginal1: severe post-partum haemorrhage, collector bag, cluster-randomised controlled1 trial, Europe2 collector bag for measurement of postpartum blood loss after vaginal delivery in reducing the6 incidence

Paris-Sud XI, Universit de

274

Formal Derivation of Concurrent Garbage Collectors Dusko Pavlovic1, Peter Pepper2, and Douglas R. Smith1  

E-Print Network [OSTI]

Formal Derivation of Concurrent Garbage Collectors Dusko Pavlovic1, Peter Pepper2, and Douglas Rat Berlin and Fraunhofer FIRST, Berlin pepper@cs.tu-berlin.de Abstract. Concurrent garbage collectors are notoriously difficult to implement correctly. Previous approaches to the issue of producing correct collectors

Pavlovic, Dusko

275

Discrete Mathematics and Theoretical Computer Science DMTCS vol. (subm.), by the authors, 11 The weighted words collector  

E-Print Network [OSTI]

1 The weighted words collector Jeremie du Boisberranger1 and Dani`ele Gardy1 and Yann Ponty2 1 Universite de collector problem, i.e. the expected number of calls to a random weighted generator before all the words collector lies in the, potentially large, multiplicity of the words/coupons of a given probability

Paris-Sud XI, Universit de

276

Large-Signal HBT Model with Improved Collector Transit Time Formulation for GaAs and InP Technologies  

E-Print Network [OSTI]

mi': iaE Large-Signal HBT Model with Improved Collector Transit Time Formulation for GaAs and In large-signal HBT model which accurately accounts for the intricate hias dependence of collector delay collector delay function accounts for the variation of electron velocity with electric field

Asbeck, Peter M.

277

Proc. 20th Symp. Principles of Programming Languages, 1993, pages 113{123. A concurrent, generational garbage collector  

E-Print Network [OSTI]

, generational garbage collector for a multithreaded implementation of ML Damien Doligez Xavier Leroy Ecole a \\quasireal-time"garbage collector for Concurrent Caml Light, an implementation of ML with threads. This two-generation system combines a fast, asynchronous copying collector on the young generation with a non- disruptive

Leroy, Xavier

278

Offset voltage of Schottky-collector silicon-on-glass vertical PNP's G. Lorito, L. K. Nanver and N. Nenadovi  

E-Print Network [OSTI]

Offset voltage of Schottky-collector silicon-on-glass vertical PNP's G. Lorito, L. K. Nanver and N and investigated with respect to the influence of the collector design on the offset voltage. With Schottky collector contacts the offset voltage can be made both very low (

Technische Universiteit Delft

279

1070 IEEE TRANSACTIONS ON ELECTRON DEVICES, VOL. 49, NO. 6, JUNE 2002 A New Lateral PNM Schottky Collector Bipolar Transistor  

E-Print Network [OSTI]

Collector Bipolar Transistor (SCBT) on SOI for Nonsaturating VLSI Logic Design M. Jagadesh Kumar and D. The collector-base junction of the proposed lateral PNM transistor consists of a Schottky junction between n PNM, numerical simulation, Schottky collector, silicon-on-insulator (SOI). I. INTRODUCTION Because

Kumar, M. Jagadesh

280

A Generational On-the-y Garbage Collector for Java Tamar Domani Elliot K. Kolodner y Erez Petrank z  

E-Print Network [OSTI]

A Generational On-the- y Garbage Collector for Java Tamar Domani #3; Elliot K. Kolodner y Erez Petrank z Abstract An on-the- y garbage collector does not stop the program threads to perform the collection. Instead, the collector executes in a separate thread (or pro- cess) in parallel to the program

Petrank, Erez

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

A Generational On-the-y Garbage Collector for Java Tamar Domani Elliot K. Kolodner y Erez Petrank z  

E-Print Network [OSTI]

A Generational On-the- y Garbage Collector for Java Tamar Domani #3; Elliot K. Kolodner y Erez Petrank z Abstract An on-the- y garbage collector does not stop the program threads to perform the collection. Instead, the collector executes in a separate thread (or process) in parallel to the program. On

Petrank, Erez

282

IDENTIFYING OFF-NORMAL HYPERVELOCITY IMPACTS IN ALUMINUM FOIL BY AUGER IMAGING: IMPLICATIONS FOR THE EXAMINATION OF THE INTERSTELLAR COLLECTOR.  

E-Print Network [OSTI]

FOR THE EXAMINATION OF THE INTERSTELLAR COLLECTOR. F. J. Stadermann1 , C. Floss1 , H. Y. M. Lam1 , M. C. Price2 , M. J was to comet 81P/Wild 2, it also carried a second collector which was designed to capture and return contemporary interstellar dust traversing the solar system [1]. The design of this interstellar collector

283

IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 32, NO. 3, JUNE 2004 1267 Improvements in Depressed Collector Performance  

E-Print Network [OSTI]

Collector Performance by Modifications to Electrode Geometry Vis-a-Vis Trajectories of Backscattered, Life Fellow, IEEE Abstract--Backscattering of electrons in depressed collectors has a significant effect on the collector efficiency and other performance parameters. We have studied these phenomena

Valfells, gst

284

The Effect of Debris on Collector Optics, its Mitigation and Repair: Next-Step a Gaseous Sn EUV DPP Source  

E-Print Network [OSTI]

The Effect of Debris on Collector Optics, its Mitigation and Repair: Next-Step a Gaseous Sn EUV DPP to advanced fuel plasma EUV sources is collector lifetime. The Illinois Debris-mitigation EUV Applications based on this work. Keywords: EUV source, debris, optics, collector lifetime, mitigation, plasma

Spila, Timothy P.

285

Two-phase flow in horizontal wells  

SciTech Connect (OSTI)

Flow in horizontal wells and two-phase flow interaction with the reservoir were investigated experimentally and theoretically. Two-phase flow behavior has been recognized as one of the most important problems in production engineering. The authors designed and constructed a new test facility suitable for acquiring data on the relationship between pressure drop and liquid holdup along the well and fluid influx from the reservoir. For the theoretical work, an initial model was proposed to describe the flow behavior in a horizontal well configuration. The model uses the inflow-performance-relationship (IPR) approach and empirical correlations or mechanistic models for wellbore hydraulics. Although good agreement was found between the model and experimental data, a new IPR apart from the extension of Darcy`s law must be investigated extensively to aid in the proper design of horizontal wells.

Ihara, Masaru [Japan National Oil Corp., Chiba (Japan); Yanai, Koji [Nippon Kokan Corp., Yokohama (Japan); Yanai, Koji

1995-11-01T23:59:59.000Z

286

Horizontal stirring in the global ocean  

E-Print Network [OSTI]

Horizontal mixing and the distribution of coherent structures in the global ocean are analyzed using Finite-Size Lyapunov Exponents (FSLE), computed for the surface velocity field derived from the Ocean general circulation model For the Earth Simulator (OFES). FSLEs measure horizontal stirring and dispersion; additionally, the transport barriers which organize the oceanic flow can roughly be identified with the ridges of the FSLE field. We have performed a detailed statistical study, particularizing for the behaviour of the two hemispheres and different ocean basins. The computed Probability Distributions Functions (PDFs) of FSLE are broad and asymmetric. Horizontal mixing is generally more active in the northern hemisphere than in the southern one. Nevertheless the Southern Ocean is the most active ocean, and the Pacific the less active one. A striking result is that the main currents can be classified in two 'activity classes': Western Boundary Currents, which have broad PDFs with large FSLE values, and Eas...

Hernndez-Carrasco, I; Hernndez-Garca, E; Turiel, A

2011-01-01T23:59:59.000Z

287

Study of active control of instability in a boundary layer over a flat plate flow  

E-Print Network [OSTI]

). . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 9 34 Power spectrum and time record at a freestream of 136. 8 mm/s, 2. 5 mm off the bottom wall and 25. 4 mm upstream of the actuator. . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 35 Power specnum and time record at a Ireestream... of 201. 3 mm/s, 2. 5 mm off the bottom wall and 25. 4 mm upstream of the actuator. . . . . . . . . . . . . . . . . . . . . . . . . . . 41 FIGURE Page 36 Power spectrum and time record at a &eestream of 263. 8 mm/s, 2. 5 mm off the bottom wall and 25...

Oryu, Hiroshi

2000-01-01T23:59:59.000Z

288

Review of Consensus Standard Spectra for Flat Plate and Concentrating Photovoltaic Performance  

SciTech Connect (OSTI)

Consensus standard reference terrestrial solar spectra are used to establish nameplate ratings for photovoltaic device performance at standard reporting conditions. This report describes reference solar spectra developed in the United States and international consensus standards community which are widely accepted as of this writing (June 2011).

Myers, D.

2011-09-01T23:59:59.000Z

289

The effect of injection hole geometry on flat plate film cooling and heat transfer  

E-Print Network [OSTI]

conducted at 50 000 Reynolds number , wi th bo th a ir and C02 inject ion and at f our b lowing ratios for r\\ and a l l five b lowing ratios for h . Each slot con f igurat ion was designed to give a total cross-sectional area equal to that of the holes... Averaged Heat Trans fer Coeff icient Ratio for 45? Hole Injection 20 approx imate ly 1.05. In contrast to 0? hole injection, 45? hole inject ion projects a larger cross-sect ional area to the mainf low, wh i ch results i n h igher turbu lence...

Madsen, Eric Perry

1994-01-01T23:59:59.000Z

290

An experimental study of radial jet reattachment on a flat plate  

E-Print Network [OSTI]

with results obtained by Vogei and Eaton [3]. Their experiments For a backward facing step showed that the point of maximum turbulence intensity occurs just prior to reattachment. It was also found that in addition to location, geometric test configuration... the RdF Corporation. The Ii I CRO-FO I L heat Flow sensor cons i sts of two thermocoup 1 es sandwiched around a center of known thermal conductivity. The sensor itself was only . 012 inches thick and comes from the factory pre-calibrated and ready...

MacGregor, John Donald

1986-01-01T23:59:59.000Z

291

An evaluation of the thermal characteristics of a flat plate heat pipe spreader  

E-Print Network [OSTI]

loss could bc determined. Duc to the axisymmetric nature of the i. echnique, it was necessary to define the effective radial heat pipe dimensions. ln the case of a disk shaped flat heat pipe, the effective radius is equal to the radius of the disk...

Chesser, Jason Blake

2000-01-01T23:59:59.000Z

292

Flow field characteristics of a radial jet reattaching on a flat plate  

E-Print Network [OSTI]

' V, : 30. 48 m/s ? 1 0 1 2 3 4 5 6 r/rb 0. 3 0. 2 b eeeeo 2. 5 mm 5. 0 mm 7. 5 mm 0. 1 0. 0 ? 0. 1? ? 0. 2? Xp/b . ' 0 8, : 10' V, [ 60. 06 m/s 0 1 2 3 4 r/rb Figure 12. Continued, 6 0. 3 0. 2 b 2. 5 mm 5. 0 nsm 7. 5 mm 0, 1... 0. 0 ? 0. 1 ? 0. 2 0. 3 Xp/b 8, : ? 10' V, 30. 45 m/s 0 1 2 3 4 5 6 r/rb 0. 3 0. 2 b 2. 5 mm 5. 0 mm 7. 5 mm 0. 1 0. 0 ? 0. 1 ceeeeecS ? 0. 2? Xr/b 0, ; ? 10 45. 72 rn/s 0 1 2 3 4 r/rb Vigure 12. Continued. 63 0. 2 Z. 5 rnm...

Carbone, Janique Sylvia

2012-06-07T23:59:59.000Z

293

Modal parameters for a flat plate supported by an oil film.  

SciTech Connect (OSTI)

This paper examines the resonant frequencies, Mode shapes, and damping values for a square plate suppcirted by an oil film. Such a study is motivated by interesl: in oil-supported slip tables used for vibration testing. Rtssonant frequencies and percent critical damping were measured for four cases: plate freely suspended; plate with free end conditions and suppoited by an oil film; plate fixed at several locations; and plate fixed at several locations while supported by an oil film. Analytical estimates of the modal properties and modal propertie!j derived from measured data are compared and discrepancies discussed.

Jauhola, A. G. (Andrew G.); Kinzel, E. C. (Edward C.); Reding, D. (Derek); Hunter, N. F. (Norman F.)

2003-01-01T23:59:59.000Z

294

CATALYZED COMBUSTION IN A FLAT PLATE BOUNDARY LAYER II. NUMERICAL CALCULATIONS  

E-Print Network [OSTI]

at Simulated Gas Turbine Combustor Operating Conditions",on the use of catalytic combustors for aircraft gas turbineof prototype catalytic combustor configurations. studies are

Schefer, R.

2010-01-01T23:59:59.000Z

295

Climatically Diverse Data Set for Flat-Plate PV Module Model Validations (Presentation)  

SciTech Connect (OSTI)

Photovoltaic (PV) module I-V curves were measured at Florida, Colorado, and Oregon locations to provide data for the validation and development of models used for predicting the performance of PV modules.

Marion, B.

2013-05-01T23:59:59.000Z

296

Validation of Multiple Tools for Flat Plate Photovoltaic Modeling Against Measured Data  

SciTech Connect (OSTI)

This report expands upon a previous work by the same authors, published in the 40th IEEE Photovoltaic Specialists conference. In this validation study, comprehensive analysis is performed on nine photovoltaic systems for which NREL could obtain detailed performance data and specifications, including three utility-scale systems and six commercial scale systems. Multiple photovoltaic performance modeling tools were used to model these nine systems, and the error of each tool was analyzed compared to quality-controlled measured performance data. This study shows that, excluding identified outliers, all tools achieve annual errors within +/-8% and hourly root mean squared errors less than 7% for all systems. It is further shown using SAM that module model and irradiance input choices can change the annual error with respect to measured data by as much as 6.6% for these nine systems, although all combinations examined still fall within an annual error range of +/-8.5%. Additionally, a seasonal variation in monthly error is shown for all tools. Finally, the effects of irradiance data uncertainty and the use of default loss assumptions on annual error are explored, and two approaches to reduce the error inherent in photovoltaic modeling are proposed.

Freeman, J.; Whitmore, J.; Blair, N.; Dobos, A. P.

2014-08-01T23:59:59.000Z

297

CATALYZED COMBUSTION IN A FLAT PLATE BOUNDARY LAYER I. EXPERIMENTAL MEASUREMENTS AND COMPARISON WITH NUMERICAL CALCULATIONS  

E-Print Network [OSTI]

l~ Roberts, "Catathermal Combustion: A New Process for Lm'l-significant gas phase combustion is induced by the presenceInternational) on Combustion (to be published), The

Robben, R.

2010-01-01T23:59:59.000Z

298

CATALYZED COMBUSTION IN A FLAT PLATE BOUNDARY LAYER II. NUMERICAL CALCULATIONS  

E-Print Network [OSTI]

D.G. , Fourteenth Sympo- sium (International) on Combustion,The Combustion Institute, Pittsburgh, 107 (1973). Wilson,Program for Calculation of Combustion Reaction Equilibrium

Schefer, R.

2010-01-01T23:59:59.000Z

299

Flat-Plate Photovoltaic Balance of System Basics | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office0-72.pdf Flash2010-72.pdf Flash2010-72.pdf MoreFlash_2010-49.pdf

300

Oil/gas collector/separator for underwater oil leaks  

DOE Patents [OSTI]

An oil/gas collector/separator for recovery of oil leaking, for example, from an offshore or underwater oil well. The separator is floated over the point of the leak and tethered in place so as to receive oil/gas floating, or forced under pressure, toward the water surface from either a broken or leaking oil well casing, line, or sunken ship. The separator is provided with a downwardly extending skirt to contain the oil/gas which floats or is forced upward into a dome wherein the gas is separated from the oil/water, with the gas being flared (burned) at the top of the dome, and the oil is separated from water and pumped to a point of use. Since the density of oil is less than that of water it can be easily separated from any water entering the dome.

Henning, Carl D. (Livermore, CA)

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Graphite Foams for Lithium-Ion Battery Current Collectors  

SciTech Connect (OSTI)

Graphite open-cell foams, with their very high electronic and thermal conductivities, may serve as high surface area and corrosion resistant current collectors for lithium-ion batteries. As a proof of principle, cathodes were prepared by sintering carbon-coated LiFePO4 particles into the porous graphite foams. Cycling these cathodes in a liquid electrolyte cell showed promising performance even for materials and coatings that have not been optimized. The specific capacity is not limited by the foam structure, but by the cycling performance of the coated LiFePO4 particles. Upon extended cycling for more than 100 deep cycles, no loss of capacity is observed for rates of C/2 or less. The uncoated graphite foams will slowly intercalate lithium reversibly at potentials less than 0.2 volts versus lithium.

Dudney, Nancy J [ORNL; Tiegs, Terry N [ORNL; Kiggans, Jim [ORNL; Jang, Young-Il [ORNL; Klett, James William [ORNL

2007-01-01T23:59:59.000Z

302

Focusing solar collector and method for manufacturing same  

DOE Patents [OSTI]

Disclosed is a solar collector comprising an annular-shaped frame and a composite membrane member for concentrating and focusing sun radiation. The composite membrane member is supported and tensioned by the frame and consists of first and second differentially pretensioned sheet members which are integrally bonded to one another. The frame and one of the two sheet members are adapted to allow tensions in both of the sheets to be adjusted. Subsequent to bonding and upon adjusting a tension in one of the two sheet members, both of the two bonded sheet members react with one another so as to cause the composite membrane member to have a contoured configuration, which enables the membrane member to be focusable. Additionally, adjusting the tension in one of the two sheet members provides a reciprocal adjustment in a focus provided by the membrane member.

Murphy, Lawrence M. (Lakewood, CO)

1984-01-01T23:59:59.000Z

303

Lightweight performance data collectors 2.0 with Eiger support.  

SciTech Connect (OSTI)

We report on the use and design of a portable, extensible performance data collection tool motivated by modeling needs of the high performance computing systems co-design com- munity. The lightweight performance data collectors with Eiger support is intended to be a tailorable tool, not a shrink-wrapped library product, as pro ling needs vary widely. A single code markup scheme is reported which, based on compilation ags, can send perfor- mance data from parallel applications to CSV les, to an Eiger mysql database, or (in a non-database environment) to at les for later merging and loading on a host with mysql available. The tool supports C, C++, and Fortran applications.

Allan, Benjamin A.

2013-05-01T23:59:59.000Z

304

Rim-drive cable-aligned heliostat collector system  

DOE Patents [OSTI]

Disclosed is a heliostat collector apparatus comprising at least one heliostat suspended from a plurality of longitudinally extending linkage means. An enclosure structure is disposed adjacent the heliostat and provides a means for allowing the heliostat to be substantially protected from weathering. A first drive means is operatively connected to the heliostat to effect steering thereof in at least one of first and second predetermined directions. Finally, a frame member is adapted for supporting the heliostat at an inner portion thereof. The frame includes a plurality of outer expandable portions. Each one of the expandable portions is adapted to slidably engage a corresponding one of the plurality of linkage means. The expandable portions are further adapted to allow the heliostat to be slidably moved along the linkage means in directions away from and towards the enclosure structure and to substantially reduce stress acting on the heliostat during steering.

Dolan, J.E.; Sands, T.D.

1982-09-30T23:59:59.000Z

305

Progress of the stochastic cooling system of the Collector Ring  

E-Print Network [OSTI]

An overview of the recent achievements and ongoing developments for the stochastic cooling system of the Collector Ring is given. In focus are the hardware developments as well as the progress in predicting the system performance. The system operates in the frequency band 1-2 GHz, it has to provide fast 3D cooling of antiproton, rare isotope and stable heavy ion beams. The main challenges are (i) the cooling of antiprotons by means of cryogenic movable pick-up electrodes and (ii) the fast two-stage cooling (pre-cooling by the Palmer method, followed by the notch filter method) of the hot rare isotope beams (RIBs). Recently, a novel code for simulating the cooling process in the time domain has been developed at CERN. First results for the momentum cooling for heavy ions in the CR will be shown in comparison with results obtained in the frequency domain with the Fokker-Planck approach.

Dimopoulou, C; Bohm, R; Dolinskyy, O; Franzke, B; Hettrich, R; Maier, W; Menges, R; Nolden, F; Peschke, C; Petri, P; Steck, M; Thorndahl, L

2013-01-01T23:59:59.000Z

306

Focusing solar collector and method for manufacturing same  

DOE Patents [OSTI]

Disclosed is a solar collector comprising an annular-shaped frame and a composite membrane member for concentrating and focusing sun radiation. The composite membrane member is supported and tensioned by the frame and consists of first and second differentially pretensioned sheet members which are integrally bonded to one another. The frame and one of the two sheet members are adapted to allow tensions in both of the two sheets to be adjusted. Subsequent to bonding and upon adjusting a tension in one of the two sheet members, both of the two bonded sheet members react with one another so as to cause the composite membrane member to have a contoured configuration, which enables the membrane member to be focusable. Additionally, adjusting the tension in one of the two sheet members provides a reciprocal adjustment in a focus provided by the membrane member.

Murphy, L.M.

1984-01-01T23:59:59.000Z

307

Electrolytic/fuel cell bundles and systems including a current collector in communication with an electrode thereof  

DOE Patents [OSTI]

Electrolytic/fuel cell bundles and systems including such bundles include an electrically conductive current collector in communication with an anode or a cathode of each of a plurality of cells. A cross-sectional area of the current collector may vary in a direction generally parallel to a general direction of current flow through the current collector. The current collector may include a porous monolithic structure. At least one cell of the plurality of cells may include a current collector that surrounds an outer electrode of the cell and has at least six substantially planar exterior surfaces. The planar surfaces may extend along a length of the cell, and may abut against a substantially planar surface of a current collector of an adjacent cell. Methods for generating electricity and for performing electrolysis include flowing current through a conductive current collector having a varying cross-sectional area.

Hawkes, Grant L.; Herring, James S.; Stoots, Carl M.; O'Brien, James E.

2013-03-05T23:59:59.000Z

308

Method of making a current collector for a sodium/sulfur battery  

DOE Patents [OSTI]

This specification is directed to a method of making a current collector for a sodium/sulfur battery. The current collector so-made is electronically conductive and resistant to corrosive attack by sulfur/polysulfide melts. The method includes the step of forming the current collector for the sodium/sulfur battery from a composite material formed of aluminum filled with electronically conductive fibers selected from the group of fibers consisting essentially of graphite fibers having a diameter up to 10 microns and silicon carbide fibers having a diameter in a range of 500--1,000 angstroms. 2 figs.

Tischer, R.P.; Winterbottom, W.L.; Wroblowa, H.S.

1987-03-10T23:59:59.000Z

309

Method of making a current collector for a sodium/sulfur battery  

DOE Patents [OSTI]

This specification is directed to a method of making a current collector (14) for a sodium/sulfur battery (10). The current collector so-made is electronically conductive and resistant to corrosive attack by sulfur/polysulfide melts. The method includes the step of forming the current collector for the sodium/sulfur battery from a composite material (16) formed of aluminum filled with electronically conductive fibers selected from the group of fibers consisting essentially of graphite fibers having a diameter up to 10 microns and silicon carbide fibers having a diameter in a range of 500-1000 angstroms.

Tischer, Ragnar P. (Birmingham, MI); Winterbottom, Walter L. (Farmington Hills, MI); Wroblowa, Halina S. (West Bloomfield, MI)

1987-01-01T23:59:59.000Z

310

530 IEEE ELECTRON DEVICE LETTERS, VOL. 26, NO. 8, AUGUST 2005 InGaAs/InP DHBTs With 120-nm Collector Having  

E-Print Network [OSTI]

Collector Having Simultaneously High f , fmax 450 GHz Zach Griffith, Mark J. W. Rodwell, Fellow, IEEE, Xiao. The devices have been scaled vertically for reduced electron collector transit time and aggres- sively scaled laterally to minimize the basecollector capacitance associated with thinner collectors. The dc current gain

Rodwell, Mark J. W.

311

InP DHBT IC Technology with Implanted Collector-Pedestal and Electroplated Device Contacts M. Urteaga, K. Shinohara, R. Pierson, P. Rowell and B. Brar  

E-Print Network [OSTI]

InP DHBT IC Technology with Implanted Collector-Pedestal and Electroplated Device Contacts M that incorporates an ion implanted N+ collector-pedestal for reduction of extrinsic collector-base capacitance Ccb without a collector pedestal. Static frequency-divider circuits have been realized in the technology

Rodwell, Mark J. W.

312

Tables in Context: Integrating Horizontal Displays with  

E-Print Network [OSTI]

design challenges for tabletop interfaces: integrating access to public and private information, managing a cooperative gesture to organize digital documents on an interactive table. Our tabletop interface designTables in Context: Integrating Horizontal Displays with Ubicomp Environments Abstract Our work

Klemmer, Scott

313

Wayne field: A horizontal drilling case study  

SciTech Connect (OSTI)

Beginning in the spring of 1994, studies of Wayne field located on the northeastern flank of the Williston Basin were initiated to determine the feasibility of using horizontal drilling to increase recoverable reserves in the field. The Wayne subinterval is one of several shoaling-upwards cycles within the Mission Canyon Formation of the Mississippian Madison Group. The reservoir pay averages 24% porosity, 100 millidarcys permeability, and 50% water saturation. Vertical wells, since field discovery in 1957, typically IP for 70 bopd and 20% water with a rapid decline within a few months to 10 bopd and 90% water. This type of well performance is characteristic of severe water coning for which horizontal development can help to minimize. In late 1994 and early 1995 the Ballantyne Hedges No.7H and GeoResources O. Fossum No.H1 were drilled. The wells recorded IP`s of 280 bopd/5 bwpd and 390 bopd/80 bwpd respectively. After six months of production both wells stabilized at approximately 110 bopd with a 35% water cut. Projections indicate that each horizontal well will recover 250,000 bbls of oil as compared to 115,000 bbls for an average vertical well and will do so in half the time. These early results provide a significant improvement over the vertical production and would seem to be reducing water coning. Three more horizontal wells are planned for the fourth quarter of 1995.

Jennings, J.B. [GeoResources, Inc., Williston, ND (United States); Johnson, R.P. [Harris, Brown, & Kiemer, Inc., Bismarck, ND (United States)

1996-06-01T23:59:59.000Z

314

Next-Generation Solar Collectors for CSP, Concentrating Solar Power (Fact Sheet)  

SciTech Connect (OSTI)

3M Company is one of the 2012 SunShot CSP R&D awardees for their advanced collectors. This fact sheet explains the motivation, description, and impact of the project.

Not Available

2012-09-01T23:59:59.000Z

315

Experimental test of a facetted, non-imaging solar concentrating collector  

SciTech Connect (OSTI)

Preliminary tests of an experimental collector designed to produce process heat up to 300/sup 0/C are reported. The collector is a modular nonimaging trough concentrator (5.25X) whose mirror surface consists of planar facets sealed inside low cost glass tubes. The absorber is a cylindrical fin inside an evacuated glass tube. The behavior of the absorber tube independent of the concentrator was studied. Time constants of 1 to 4 minutes were measured at different flow rates. By measuring the optical efficiency of the absorber, its ..cap alpha..tau product was determine as 0.80. A transient behavior test was used to measure the collector overall heat loss coefficient throughout a wide range of temperatures. Preliminary measurements of the collector optical efficiency were carried out and are compared to theoretical predictions.

Lopez, A.M.; Ortabasi, U.; Atienza, J.A.; Oezakcay, L.M.

1980-01-01T23:59:59.000Z

316

Wind Tunnel Tests of Parabolic Trough Solar Collectors: March 2001--August 2003  

SciTech Connect (OSTI)

Conducted extensive wind-tunnel tests on parabolic trough solar collectors to determine practical wind loads applicable to structural design for stress and deformation, and local component design for concentrator reflectors.

Hosoya, N.; Peterka, J. A.; Gee, R. C.; Kearney, D.

2008-05-01T23:59:59.000Z

317

Mechanical development of an actuation system for a parabolic solar trough collector  

E-Print Network [OSTI]

This thesis documents my personal contribution to the development of a hydraulic-based actuation system for a solar trough collector. The goal of this project was to design the actuation system using hydraulic actuators ...

Carrillo, Juan Felipe (Carrillo Salazar)

2013-01-01T23:59:59.000Z

318

PRELIMINARY EXAMINATION OF THE STARDUST INTERSTELLAR COLLECTOR: AL FOIL I1044N,1.  

E-Print Network [OSTI]

stream. Like for the cometary tray, the interstellar collector's aerogel cells are held together with Al and manually inspected for impact craters. The SEM survey of this foil is complicated by lots of aerogel debris

Nittler, Larry R.

319

Intergrated function nonimaging concentrating collector tubes for solar thermal energy. Final technical report  

SciTech Connect (OSTI)

A substantial improvement in optical efficiency over contemporary external reflector evacuated tube collectors has been achieved by integrating the reflector surface into the outer glass envelope. Described are the design fabrication and test results for a prototype collector based on this concept. A comprehensive test program to measure performance and operational characteristics of a 2 m/sup 2/ panel (45 tubes) has been completed. Efficiencies above 50% relative to beam at 200/sup 0/C have been repeatedly demonstrated. Both the instantaneous and long term average performance of this totally stationary solar collector are comparable to those for tracking line focus parabolic troughs. The yield, reliability and stability of performance achieved have been excellent. Subcomponent assemblies and fabrication procedures have been used which are expected to be compatible with high volume production. The collector has a wide variety of applications in the 100/sup 0/C to 300/sup 0/C range including industrial process heat, air conditioning and Rankine engine operation.

Winston, R

1982-09-01T23:59:59.000Z

320

3X compound parabolic concentrating (CPC) solar energy collector. Final technical report  

SciTech Connect (OSTI)

Chamberlain engineers designed a 3X compound parabolic concentrating (CPC) collector for the subject contract. The collector is a completely housed, 105.75 x 44.75 x 10.23-inch, 240-pound unit with six each evacuated receiver assemblies, a center manifold and a one-piece glass cover. A truncated version of a CPC trough reflector system and the General Electric Company tubular evacuated receiver have been integrated with a mass producible collector design suitable for operation at 250 to 450/sup 0/F. The key criterion for optimization of the design was minimization of the cost per Btu collected annually at an operating temperature of 400/sup 0/F. The reflector is a 4.1X design truncated to a total height of 8.0 inches with a resulting actual concentration ratio of 2.6 to 1. The manifold is an insulated area housing the fluid lines which connect the six receivers in series with inlet and outlet tubes extending from one side of the collector at the center. The reflectors are polished, anodized aluminum which are shaped by the roll form process. The housing is painted, galvanized steel, and the cover glass is 3/16-inch thick tempered, low iron glass. The collector requires four slope adjustments per year for optimum effectiveness. Chamberlain produced ten 3X CPC collectors for the subject contract. Two collectors were used to evaluate assembly procedures, six were sent to the project officer in Albuquerque, New Mexico, one was sent to Argonne National Laboratory for performance testing and one remained with the Company. A manufacturing cost study was conducted to estimate limited mass production costs, explore cost reduction ideas and define tooling requirements. The final effort discussed shows the preliminary design for application of a 3X CPC solar collector system for use in the Iowa State Capitol complex.

Ballheim, R.W.

1980-04-25T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Horizontal modular dry irradiated fuel storage system  

DOE Patents [OSTI]

A horizontal, modular, dry, irradiated fuel storage system (10) includes a thin-walled canister (12) for containing irradiated fuel assemblies (20), which canister (12) can be positioned in a transfer cask (14) and transported in a horizontal manner from a fuel storage pool (18), to an intermediate-term storage facility. The storage system (10) includes a plurality of dry storage modules (26) which accept the canister (12) from the transfer cask (14) and provide for appropriate shielding about the canister (12). Each module (26) also provides for air cooling of the canister (12) to remove the decay heat of the irradiated fuel assemblies (20). The modules (26) can be interlocked so that each module (26) gains additional shielding from the next adjacent module (26). Hydraulic rams (30) are provided for inserting and removing the canisters (12) from the modules (26).

Fischer, Larry E. (Los Gatos, CA); McInnes, Ian D. (San Jose, CA); Massey, John V. (San Jose, CA)

1988-01-01T23:59:59.000Z

322

Flow mapping for an ESS horizontal target  

SciTech Connect (OSTI)

In the target of the European spallation neutron source (ESS), the beam line is horizontal and the mercury is fully forced by a pump in a parallel channel geometry. The top front of the assembly is a hemicylindrical wall, where the beam enters and is thus called a window. The main body is partitioned by a horizontal separation plate into the upper and the lower flow channels. The target liquid flows in the lower channel to the window region, turns there, and flows out in the upper channel. A thermal-hydraulic study is under way to investigate the general behavior of the flow in this configuration. The present experimental work is the first step of an effort to validate computer codes. The model used in this investigation is two-dimensional and uses water.

Takeda, Y.; Kikura, H.; Taishi, T. [Paul Scherrer Institute, Villigen (Switzerland)

1997-12-01T23:59:59.000Z

323

Corrosion of lithium-ion battery current collectors  

SciTech Connect (OSTI)

The primary current-collector materials being used in lithium-ion cells are susceptible to environmental degradation: aluminum to pitting corrosion and copper to environmentally assisted cracking. Localized corrosion occurred on bare aluminum electrodes during simulated ambient-temperature cycling in an excess of electrolyte. The highly oxidizing potential associated with the positive-electrode charge condition was the primary factor. The corrosion mechanism differed from the pitting typically observed in aqueous electrolytes because each site was filled with a mixed metal/metal-oxide product, forming surface mounds or nodules. Electrochemical impedance spectroscopy was shown to be an effective analytical tool for characterizing the corrosion behavior of aluminum under these conditions. Based on X-ray photoelectron spectroscopy analyses, little difference existed in the composition of the surface film on aluminum and copper after immersion or cycling in LiPF{sub 6} electrolytes made with two different solvent formulations. Although Li and P were the predominant adsorbed surface species, the corrosion resistance of aluminum may simply be due to its native oxide. Finally, copper was shown to be susceptible to environmental cracking at or near the lithium potential when specific metallurgical conditions existed (work hardening and large grain size).

Braithwaite, J.W.; Gonzales, A.; Nagasubramanian, G.; Lucero, S.J.; Peebles, D.E.; Ohlhausen, J.A.; Cieslak, W.R. [Sandia National Labs., Albuquerque, NM (United States)] [Sandia National Labs., Albuquerque, NM (United States)

1999-02-01T23:59:59.000Z

324

Economic viability of multiple-lateral horizontal wells  

E-Print Network [OSTI]

Horizontal wells are gaining popularity throughout the petroleum industry as a means to increase well productivity and enhance incremental economics. Horizontal wells provide greater reservoir exposure and are useful in intersecting additional pay...

Smith, Christopher Jason

1995-01-01T23:59:59.000Z

325

Sidewall containment of liquid metal with horizontal alternating magnetic fields  

DOE Patents [OSTI]

An apparatus is disclosed for confining molten metal with a horizontal alternating magnetic field. In particular, this invention employs a magnet that can produce a horizontal alternating magnetic field to confine a molten metal at the edges of parallel horizontal rollers as a solid metal sheet is cast by counter-rotation of the rollers. 19 figs.

Praeg, W.F.

1995-01-31T23:59:59.000Z

326

Proceedings of ICRC 2001: 860 c Copernicus Gesellschaft 2001 Event reconstruction for the orbiting wide-angle light collectors  

E-Print Network [OSTI]

for the orbiting wide-angle light collectors (OWL) air-fluorescence detector T. Z. Abu-Zayyad1 and the OWL

327

Midtemperature solar systems test facility predictions for thermal performance of the Acurex solar collector with FEK 244 reflector surface  

SciTech Connect (OSTI)

Thermal performance predictions are presented for the Acurex solar collector, with FEK 244 reflector surface, for three output temperatures at five cities in the United States.

Harrison, T.D.

1981-01-01T23:59:59.000Z

328

Generation of large-scale winds in horizontally anisotropic convection  

E-Print Network [OSTI]

We simulate three-dimensional, horizontally periodic Rayleigh-B\\'enard convection between free-slip horizontal plates, rotating about a horizontal axis. When both the temperature difference between the plates and the rotation rate are sufficiently large, a strong horizontal wind is generated that is perpendicular to both the rotation vector and the gravity vector. The wind is turbulent, large-scale, and vertically sheared. Horizontal anisotropy, engendered here by rotation, appears necessary for such wind generation. Most of the kinetic energy of the flow resides in the wind, and the vertical turbulent heat flux is much lower on average than when there is no wind.

von Hardenberg, J; Provenzale, A; Spiegel, E A

2015-01-01T23:59:59.000Z

329

Horizontal air trajectories in a geostrophic field with uniform horizontal shear  

E-Print Network [OSTI]

balloon A careful analysis of horizontal sir trgectories hse been made in s proJect by the Deyarheent of %%acrology, University of Oalifornts at Los Angeles by ~son P6g. The equations of horizontal, nonviscous motion were integrated numeric~ by a... Coriolis force (d3xcctad to the r3ght) is less tJ~ the presnue @radiant force, and the parhicle is accelerated In tbe direction cf the lavhcz force. Tn the second case, tbe velocity is @roster +ban tbe gecstrophie vclocity3 hence the Corlolis force...

Todsen, Marius

1956-01-01T23:59:59.000Z

330

Decline curve analysis for horizontal wells  

E-Print Network [OSTI]

support kept me from losing sight of my goals. Thanks to Sam Hou, Joseph Wang, Robert Liau, James Wang, and Shou for their company and in particular to Li Fan and Mrs. Shou-Lee Chang for their caring and delicious meals when I forgot my dinner. Thanks... Pressure (L/2xe= 0. 2) Composite Dimensionless Flow Rate Integral and Flow Rate Integral Derivative Functions Type Curve for an Infinite-Conductivity Horizontal Well Located in the Center of a Square Drainage Area, Producing at Constant Bottomhole...

Shih, Min-Yu

1994-01-01T23:59:59.000Z

331

Interphase transport in horizontal stratified cocurrent flow  

SciTech Connect (OSTI)

The problem of interfacial transport in cocurrent, horizontal stratified gas-liquid systems is considered. Local condensation heat transfer coefficients and interface shear stress were obtained from mass and force balances. Based on cocurrent stratified air-water flow data, the noncondensing interface shear stress was found to be a function of the relative velocity between the phases and the liquid fraction. Incorporated into Linehan's relation for condensing flow shear stress, the correlation was found to estimate the shear velocity for the condensation data considered. Local condensation heat transfer coefficients and gas absorption mass transfer coefficients were found to be directly proportional to the shear velocity.

Jensen, R.J.; Yuen, M.C.

1982-05-01T23:59:59.000Z

332

Determining the optical quality of focusing collectors without laser ray tracing  

SciTech Connect (OSTI)

This paper describes a novel alternative to the laser ray trace technique for evaluating the optical quality of focusing solar collectors. The new method does not require any equipment beyond what is used for measuring collector efficiency; it could therefore become part of routine collector testing. The total optical errors resulting from imperfect specularity and from inaccuracies in reflector position or slope are characterized by an angular standard deviation sigma/sub optical/, the rms deviation of the reflected rays from the design direction. The method is based on the fact that the off-axis performance of a concentrator depends on sigma/sub optical/. An angular scan is performed, i.e., the collector output is measured as a function of misalignment angle over the entire range of angles for which there is measurable output (typically a few degrees). This test should be carried out on a very clear day, with receiver close to ambient temperature (if the latter conditions cannot be satisfied, appropriate corrections are necessary). The parameter sigma/sub optical/ is then determined by a least-squares fit between the measured and the calculated angular scan. We tested the method on a parabolic trough collector manufactured by Hexcel, but it is suitable for parabolic dishes as well. The method appears to be accurate enough to determine sigma/sub optical/ within about 10%.

Bendt, P.; Gaul, H.; Rabl, A.

1980-02-01T23:59:59.000Z

333

Bitumen production through a horizontal well  

SciTech Connect (OSTI)

This patent describes a method for thermal stimulation and production of a viscous hydrocarbon from a reservoir having a productive layer which retains the hydrocarbon until the latter is made flowable by contact with a hot stimulating medium. The method includes the steps of: forming a borehole having a substantially horizontal segment which transverses the productive layer, registering a well completion in the borehole which includes; an elongated perforate well liner, a fluid conduit extending through the liner and having a discharge end, and a well head at the liner upper end communicated with the fluid conduit, positioning a variable length flow diverter in the liner adjacent to the fluid conduit discharge end, whereby to define a quasi-barrier in the liner which is pervious to passage of the hot stimulating medium, and which divides the liner into injection and production segments respectively, heating the productive layer about the substantially horizontal segment of the elongated liner, introducing a pressurized stream of the hot stimulant through the fluid conduit and into the liner injection segment, and producing hydrocarbon emulsion which flows into the liner production segment.

Livesey, D.B.; Toma, P.

1987-02-03T23:59:59.000Z

334

Solar Collector: A Novel Way of Harnessing the Sun's Energy The team analysed the prototype and different design alternatives.The goal of the Solar Collector is to better  

E-Print Network [OSTI]

Solar Collector: A Novel Way of Harnessing the Sun's Energy Overview The team analysed the prototype and different design alternatives.The goal of the Solar Collector is to better harness the solar energy by focusing the sun's energy through a series of curved reflective fins. A challenge the team

Demirel, Melik C.

335

MERCURY CONTROL WITH THE ADVANCED HYBRID PARTICULATE COLLECTOR  

SciTech Connect (OSTI)

This project was awarded under U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) Program Solicitation DE-PS26-00NT40769 and specifically addresses Technical Topical Area 4-Testing Novel and Less Mature Control Technologies on Actual Flue Gas at the Pilot Scale. The project team includes the Energy & Environmental Research Center (EERC) as the main contractor; W.L. Gore & Associates, Inc., as a technical and financial partner; and the Big Stone Power Plant operated by Otter Tail Power Company, host for the field-testing portion of the research. Since 1995, DOE has supported development of a new concept in particulate control called the advanced hybrid particulate collector (AHPC). The AHPC has been licensed to W.L. Gore & Associates, Inc., and is now marketed as the ADVANCED HYBRID{trademark} Filter by Gore. The AHPC combines the best features of electrostatic precipitators (ESPs) and baghouses in a unique configuration, providing major synergism between the two collection methods, both in the particulate collection step and in the transfer of dust to the hopper. The AHPC provides ultrahigh collection efficiency, overcoming the problem of excessive fine-particle emissions with conventional ESPs, and it solves the problem of reentrainment and re-collection of dust in conventional baghouses. The AHPC appears to have unique advantages for mercury control over baghouses or ESPs as an excellent gas-solid contactor. The objective of the three-task project is to demonstrate 90% total mercury control in the AHPC at a lower cost than current mercury control estimates. The approach includes bench-scale batch testing that ties the new work to previous results and links results with larger-scale pilot testing with real flue gas on a coal-fired combustion system, pilot-scale testing on a coal-fired combustion system with both a pulse-jet baghouse and an AHPC to prove or disprove the research hypotheses, and field demonstration pilot-scale testing at a utility power plant to prove scaleup and demonstrate longer-term mercury control. This project, if successful, will demonstrate at the pilot-scale level a technology that would provide a cost-effective technique to accomplish control of mercury emissions and, at the same time, greatly enhance fine particulate collection efficiency. The technology can be used to retrofit systems currently employing inefficient ESP technology as well as for new construction, thereby providing a solution to a large segment of the U.S. utility industry as well as other industries requiring mercury control.

Stanley J. Miller; Ye Zhuang; Michelle R. Olderbak

2002-11-01T23:59:59.000Z

336

Automated solar collector installation design including ability to define heterogeneous design preferences  

DOE Patents [OSTI]

Embodiments may include systems and methods to create and edit a representation of a worksite, to create various data objects, to classify such objects as various types of pre -defined "features" with attendant properties and layout constraints. As part of or in addition to classification, an embodiment may include systems and methods to create, associate, and edit intrinsic and extrinsic properties to these objects. A design engine may apply of design rules to the features described above to generate one or more solar collectors installation design alternatives, including generation of on-screen and/or paper representations of the physical layout or arrangement of the one or more design alternatives. Embodiments may also include definition of one or more design apertures, each of which may correspond to boundaries in which solar collector layouts should comply with distinct sets of user-defined design preferences. Distinct apertures may provide heterogeneous regions of collector layout according to the user-defined design preferences.

Wayne, Gary; Frumkin, Alexander; Zaydman, Michael; Lehman, Scott; Brenner, Jules

2014-04-29T23:59:59.000Z

337

Automated solar collector installation design including ability to define heterogeneous design preferences  

DOE Patents [OSTI]

Embodiments may include systems and methods to create and edit a representation of a worksite, to create various data objects, to classify such objects as various types of pre-defined "features" with attendant properties and layout constraints. As part of or in addition to classification, an embodiment may include systems and methods to create, associate, and edit intrinsic and extrinsic properties to these objects. A design engine may apply of design rules to the features described above to generate one or more solar collectors installation design alternatives, including generation of on-screen and/or paper representations of the physical layout or arrangement of the one or more design alternatives. Embodiments may also include definition of one or more design apertures, each of which may correspond to boundaries in which solar collector layouts should comply with distinct sets of user-defined design preferences. Distinct apertures may provide heterogeneous regions of collector layout according to the user-defined design preferences.

Wayne, Gary; Frumkin, Alexander; Zaydman, Michael; Lehman, Scott; Brenner, Jules

2013-01-08T23:59:59.000Z

338

Optimization of the Collection Efficiency of a Hexagonal Light Collector using Quadratic and Cubic Bzier Curves  

E-Print Network [OSTI]

Reflective light collectors with hexagonal entrance and exit apertures are frequently used in front of the focal-plane camera of a very-high-energy gamma-ray telescope to increase the collection efficiency of atmospheric Cherenkov photons and reduce the night-sky background entering at large incident angles. The shape of a hexagonal light collector is usually based on Winston's design, which is optimized for only two-dimensional optical systems. However, it is not known whether a hexagonal Winston cone is optimal for the real three-dimensional optical systems of gamma-ray telescopes. For the first time we optimize the shape of a hexagonal light collector using quadratic and cubic B\\'ezier curves. We demonstrate that our optimized designs simultaneously achieve a higher collection efficiency and background reduction rate than traditional designs.

Akira Okumura

2012-06-04T23:59:59.000Z

339

Random Deployment of Data Collectors for Serving Randomly-Located Sensors  

E-Print Network [OSTI]

Recently, wireless communication industries have begun to extend their services to machine-type communication devices as well as to the user equipment. Such machine-type communication devices as meters and sensors need intermittent uplink resources to report measured or sensed data to their serving data collector. It is however hard to dedicate limited uplink resources to each of them. Thus, efficient service of a tremendous number of devices with low activities may consider simple random access as a solution. The data collectors receiving the measured data from many sensors simultaneously can successfully decode only signals with signal-to-interference-plus-noise-ratio (SINR) above a certain value. The main design issues for this environment become how many data collectors are needed, how much power sensor nodes transmit with, and how wireless channels affect the performance. This paper provides answers to those questions through a stochastic analysis based on a spatial point process and on simulations.

Kwon, Taesoo

2011-01-01T23:59:59.000Z

340

Review of combined photovoltaic/thermal collector: solar assisted heat pump system options  

SciTech Connect (OSTI)

The advantages of using photovoltaic (PV) and combined photovoltaic/thermal (PV/T) collectors in conjunction with residential heat pumps are examined. The thermal and electrical power requirements of similar residences in New York City and Fort Worth are the loads under consideration. The TRNSYS energy balance program is used to simulate the operations of parallel, series, and cascade solar assisted heat pump systems. Similar work involving exclusively thermal collectors is reviewed, and the distinctions between thermal and PV/T systems are emphasized. Provided the defrost problem can be satisfactorily controlled, lifecycle cost analyses show that at both locations the optimum collector area is less than 50 m/sup 2/ and that the parallel system is preferred.

Sheldon, D.B.; Russell, M.C.

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Increasing the Efficiency of a Thermionic Engine Using a Negative Electron Affinity Collector  

E-Print Network [OSTI]

Most attention to improving vacuum thermionic energy conversion device (TEC) technology has been on improving electron emission with little attention to collector optimization. A model was developed to characterize the output characteristics of a TEC where the collector features negative electron affinity (NEA). According to the model, there are certain conditions for which the space charge limitation can be reduced or eliminated. The model is applied to devices comprised of materials reported in the literature, and predictions of output power and efficiency are made, targeting the sub-1000K hot-side regime. By slightly lowering the collector barrier height, an output power of around $1kW$, at $\\geq 20%$ efficiency for a reasonably sized device ($\\sim 0.1m^{2}$ emission area) can be achieved.

Joshua Ryan Smith

2013-07-18T23:59:59.000Z

342

A Patterned 3D Silicon Anode Fabricated by Electrodeposition on a Virus-Structured Current Collector  

SciTech Connect (OSTI)

Electrochemical methods were developed for the deposition of nanosilicon onto a 3D virus-structured nickel current collector. This nickel current collector is composed of self-assembled nanowire-like rods of genetically modified tobacco mosaic virus (TMV1cys), chemically coated in nickel to create a complex high surface area conductive substrate. The electrochemically deposited 3D silicon anodes demonstrate outstanding rate performance, cycling stability, and rate capability. Electrodeposition thus provides a unique means of fabricating silicon anode materials on complex substrates at low cost.

Chen, X L; Gerasopoulos, K; Guo, J C; Brown, A; Wang, Chunsheng; Ghodssi, Reza; Culver, J N

2011-01-01T23:59:59.000Z

343

The Sector Collector of the CMS DT Trigger system: Installation and Performance  

E-Print Network [OSTI]

Drift Tubes chambers are used for muon detection in the central region of the CMS experiment at LHC. Custom electronics is used for reconstructing muon track segments and for triggering the CMS readout. The trigger Sector Collector modules collect muon segments identified by the on-chamber devices, synchronize the data received from different chambers and convert from LVDS to Optical for transmission to the off-detector electronics. Installation and integration tests were developed for tuning both firmware and hardware of the Sector Collector system: results are reviewed. The system performance during CMS data taking with cosmic rays is discussed.

Travaglini, R

2008-01-01T23:59:59.000Z

344

Measured performances of curved inverted-vee, absorber compound parabolic concentrating solar-energy collectors  

SciTech Connect (OSTI)

The design and thermal performance of modified compound parabolic concentrating (CPC) solar-energy collectors are described. The designs incorporate a curved inverted-Vee absorber fin, which allows a reflector of simple geometry to be used. This CPC collector, has exhibited a superior performance to that of a conventional cusp-reflector CPC design, owing to the enhancement of the optical efficiency obtained by eliminating gap optical losses and an enhanced heat removal factor. The consequence upon the performance of a further design refinement, which inhibited the convective heat losses, is also reported.

Norton, B. (Univ. of Ulster at Jordanstown (Ireland)); Prapas, D.E. (Aristotle Univ. of Thessaloniki (Greece)); Eames, P.C.; Probert, S.D. (Cranfield Institute of Technology, Bedford (England))

1989-01-01T23:59:59.000Z

345

Proposal and design of a new SiC-emitter lateral NPM Schottky collector bipolar transistor on  

E-Print Network [OSTI]

Proposal and design of a new SiC-emitter lateral NPM Schottky collector bipolar transistor on SOI, a SiC emitter lateral NPM Schottky collector bipolar transistor (SCBT) with a silicon-on-insulator (SOI on simulation results, the authors demonstrate for the first time that the proposed SiC emitter lateral NPM

Kumar, M. Jagadesh

346

Midtemperature solar systems test facility predictions for thermal performance based on test data: Sun-Heet nontracking solar collector  

SciTech Connect (OSTI)

Sandia National Laboratories, Albuquerque (SNLA), is currently conducting a program to predict the performance and measure the characteristics of commercially available solar collectors that have the potential for use in industrial process heat and enhanced oil recovery applications. The thermal performance predictions for the Sun-Heet nontracking, line-focusing parabolic trough collector at five cities in the US are presented. (WHK)

Harrison, T.D.

1981-03-01T23:59:59.000Z

347

60nm collector InGaAs/InP Type-I DHBTs demonstrating 660 GHz f , BVCEO = 2.5V, and BVCBO = 2.7V  

E-Print Network [OSTI]

60nm collector InGaAs/InP Type-I DHBTs demonstrating 660 GHz f , BVCEO = 2.5V, and BVCBO = 2.7VGaAs base and a 60 nm InP collector containing an InGaAs/InAlAs superlattice grade. Devices employing a 400. The devices have been scaled vertically for reduced base and collector electron transit times, and the base-collector

Rodwell, Mark J. W.

348

Nonplanar fracture propagation from a horizontal wellbore: Experimental study  

SciTech Connect (OSTI)

This paper presents experimental results related to hydraulic fracturing of a horizontal well, specifically the nonplanar fracture geometries resulting from fracture initiation and propagation. Experiments were designed to investigate nonplanar fracture geometries. This paper discusses how these nonplanar fractures can be responsible for premature screenout and excessive treatment pressure when a horizontal well is hydraulically fractured. Reasons for unsuccessful hydraulic fracturing treatments of a horizontal well are presented and recommendations to ensure clear communication channels between the wellbore and the fracture are given.

Abass, H.H.; Hedayati, S.; Meadows, D.L.

1996-08-01T23:59:59.000Z

349

Water coning calculations for vertical and horizontal wells  

E-Print Network [OSTI]

Breakthrough Time WOR after Breakthrough RATE SENSITIVITY 8 12 13 16 WATER CONING CALCULATIONS FOR HIGH MOBILITY RATIOS . . 19 Method of Developing Correlations Correlations for a Vertical Well Correlations for a Horizontal Well Discussion 19 26... APPENDIX E: BASE CASE AND SIMULATION RUNS FOR HORIZONTAL WELLS 98 APPENDIX F: TEST CASES AND RESULTS FOR HORIZONTAL WELLS 100 APPENDIX G: ADDINGTON'S METHOD APPENDIX H: CALCULATION OF HEIGHT h~ APPENDIX I: BASE CASE AND SIMULATION RUN SUMMARY...

Yang, Weiping

1990-01-01T23:59:59.000Z

350

Application of horizontal wells in steeply dipping reservoirs.  

E-Print Network [OSTI]

??A three-dimensional reservoir simulation study is performed to evaluate the impact of horizontal well applications on oil recovery from steeply dipping reservoirs. The Provincia field, (more)

Lopez Navarro, Jose David

2012-01-01T23:59:59.000Z

351

IEEE TRANSACTIONS ON ELECTRON DEVICES, VOL. 53, NO. 9, SEPTEMBER 2006 2407 SiGe HBT Without Selectively Implanted Collector (SIC)  

E-Print Network [OSTI]

Selectively Implanted Collector (SIC) Exhibiting fmax = 310 GHz and BVCEO = 2 V Jae-Sung Rieh, Marwan Khater peak fmax of 310 GHz at the collector-current density of 7 mA/m2 and BVCEO of 2 V, are reported behind the speed enhancement has been the continuous vertical scaling of the device structure. Collector

Rieh, Jae-Sung

352

s.n., sine numero) and made several collections from a similar local-ity (common 1800's to early 1900's). Also, a few collectors use the  

E-Print Network [OSTI]

1900's). Also, a few collectors use the same collection number (e.g., Ruth 400) for different vouchers.g., T33S, R28E, S18 - township 33 south, range 28 east, section 18) cited by modern collectors are included. Locality abbreviations used by collectors (e.g., Ind. Terr. - indian territory) were cited

Krings, Alexander

353

Appears in 1993 ACM Symposium on Principles and Practice of Parallel Programming, pp. 73{82. 1 A Concurrent Copying Garbage Collector  

E-Print Network [OSTI]

A Concurrent Copying Garbage Collector for Languages that Distinguish (Im)mutable Data Lorenz Huelsbergen- tion of a concurrent compacting garbage collector for languages that distinguish mutable data from functionallanguagessuch as Haskell). Thecollector runs on shared-memory parallel computers and re- quires minimal mutator/collector

Huelsbergen, Lorenz

354

An OntheFly Mark and Sweep Garbage Collector Based on Sliding Views Hezi Azatchi + Yossi Levanoni # Harel Paz Erez Petrank  

E-Print Network [OSTI]

An OntheFly Mark and Sweep Garbage Collector Based on Sliding Views #3; Hezi Azatchi + Yossi garbage collector has become acute. We propose a novel mark and sweep onthefly algorithm based on the sliding views mechanism of Levanoni and Petrank. We have implemented our collector on the Jikes Java

Petrank, Erez

355

PRELIMINARY EXAMINATION OF THE INTERSTELLAR COLLECTOR OF STARDUST. A. J. Westphal1 , C. Allen2  

E-Print Network [OSTI]

]. Approximately 85% of the 1039 cm2 collector area of the Stardust Interstellar tray consists of aerogel tiles incorporation of data from vary- ing heliocentric distances and better understanding of particle size filtering particles >300 nm in size to have hit aerogel and 15 to have impacted the aluminum foil. An important lesson

356

Collector surface for a microwave tube comprising a carbon-bonded carbon-fiber composite  

DOE Patents [OSTI]

In a microwave tube, an improved collector surface coating comprises a porous carbon composite material, preferably a carbon-bonded carbon fiber composite having a bulk density less than about 2 g/cc. Installation of the coating is readily adaptable as part of the tube manufacturing process. 4 figs.

Lauf, R.J.; McMillan, A.D.; Johnson, A.C.; Moorhead, A.J.

1998-07-28T23:59:59.000Z

357

Collector surface for a microwave tube comprising a carbon-bonded carbon-fiber composite  

DOE Patents [OSTI]

In a microwave tube, an improved collector surface coating comprises a porous carbon composite material, preferably a carbon-bonded carbon fiber composite having a bulk density less than about 2 g/cc. Installation of the coating is readily adaptable as part of the tube manufacturing process.

Lauf, Robert J. (Oak Ridge, TN); McMillan, April D. (Knoxville, TN); Johnson, Arvid C. (Lake in the Hills, IL); Moorhead, Arthur J. (Knoxville, TN)

1998-01-01T23:59:59.000Z

358

Electron emission in a source-collector sheath system: A kinetic study  

SciTech Connect (OSTI)

The classical source-collector sheath system describes a plasma that forms between a Maxwellian source and an absorbing wall. The plasma is assumed to be collisionless and without ionization. Two distinct areas are being formed: the collector sheath, an ion-rich region in contact with the absorbing boundary, and the source sheath, which is an electron-rich area near the Maxwellian source. In this work, we study a modified version of the classical source-collector sheath system, where the wall is no longer absorbing but emits electrons. As a result, we have two different types of collector sheath, one where a potential well is formed and one without a potential well. We examine the effect of electron emission for a range of conditions for the plasma and the emitted electrons. In the first part of this work, we study the problem analytically, and in the second, using our kinetic Vlasov code, Yggdrasil. The simulation results are in very good agreement with the predictions of our theoretical model.

Rizopoulou, N., E-mail: nikoleta.rizopoulou06@imperial.ac.uk; Coppins, M.; Bacharis, M. [Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BW (United Kingdom); Robinson, A. P. L. [Central Laser Facility, Rutherford-Appleton Laboratory, Chilton, Oxon OX11 0QX (United Kingdom)

2014-10-15T23:59:59.000Z

359

Examination of the corrosion behavior of aluminum current collectors in lithium/polymer batteries  

SciTech Connect (OSTI)

The corrosion behavior of aluminum, a candidate material for the current collectors of the positive electrodes of lithium-polymer batteries, in contact with a lithium polymer electrolyte was examined in both batteries and three-electrode electrochemical cells. The results indicate aluminum is resistant to uniform corrosion in the polymer electrolyte: poly(ethylene oxide)-LiN(CF{sub 3}SO{sub 2}){sub 2} but can be susceptible to pitting corrosion. Localized pitting corrosion occurs on the aluminum current collector during overcharging of the battery. Pitting corrosion only occurred in the electrochemical cells when the aluminum electrode was anodically polarized to potentials that were considerably greater than those that resulted in pitting corrosion in batteries. The greater susceptibility of the aluminum current collectors of batteries to pitting corrosion is attributed to inhomogeneous current flow through the current collector. This results in local breakdown of the passive film on aluminum at sites of locally high current density. The inhomogeneous current density that flows through the aluminum/cathode interface is caused by the presence of discrete paths through the cathode with low electrical resistance. In an effort to improve the localized corrosion behavior of aluminum electrodes, it was found that surfaces impregnated by ion implantation with {approximately}20 atom % tungsten exhibited enhanced resistance to pitting corrosion in poly(ethylene oxide)-LiN(CF{sub 3}SO{sub 2}){sub 2}.

Chen, Y.; Devine, T.M.; Evans, J.W. [Lawrence Berkeley National Lab., CA (United States). Environmental Energy Technology Div.] [Lawrence Berkeley National Lab., CA (United States). Environmental Energy Technology Div.; [Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering; Monteiro, O.R.; Brown, I.G. [Lawrence Berkeley National Lab., CA (United States). Accelerator and Fusion Research Div.] [Lawrence Berkeley National Lab., CA (United States). Accelerator and Fusion Research Div.

1999-04-01T23:59:59.000Z

360

Simulation of a concentrating PV/thermal collector using TRNSYS J.S. Coventry  

E-Print Network [OSTI]

for Sustainable Energy Systems Australian National University Canberra 0200 ACT AUSTRALIA Telephone: +61 02 6125, in particular heating, cooling and domestic hot water applications (Solar Energy Laboratory, 2000). TRNSYS equations describing the temperature dependent energy flow between the collector and surroundings. The CHAPS

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Performance of the CHAPS Collectors Coventry Destination Renewables-ANZSES 2003 copyright  

E-Print Network [OSTI]

for Sustainable Energy Systems Australian National University Canberra 0200 A.C.T. AUSTRALIA E the centre and outside edges of the solar cells. INTRODUCTION The Centre for Sustainable Energy Systems (CSES-mail:joe.coventry@anu.edu.au Abstract The performance of the Combined Heat and Power Solar (CHAPS) collectors at the Australian National

362

Planar fuel cell utilizing nail current collectors for increased active surface area  

DOE Patents [OSTI]

A plurality of nail current collector members are useful in the gas flow passages of an electrochemical device to optimize the active surfaces of the device and to provide structural support. In addition, the thicknesses of cathode and anode layers within the electrochemical device are varied according to current flow through the device to reduce resistance and increase operating efficiency.

George, Thomas J. (Star City, WV); Meacham, G. B. Kirby (Shaker Heights, OH)

2002-03-26T23:59:59.000Z

363

Heat Transfer in Buildings: Application to Solar Air Collector and Trombe Wall Design  

E-Print Network [OSTI]

11 Heat Transfer in Buildings: Application to Solar Air Collector and Trombe Wall Design H. Boyer focuses on the modeling of Trombe solar walls. In each case, detailed modeling of heat transfer allows with same thermal behaviour). For heat conduction in walls, it results from electrical analogy

Paris-Sud XI, Université de

364

Final test results for the Schott HCE on a LS-2 collector.  

SciTech Connect (OSTI)

Sandia National Laboratories has completed thermal performance testing on the Schott parabolic trough receiver using the LS-2 collector on the Sandia rotating platform at the National Solar Thermal Test Facility in Albuquerque, NM. This testing was funded as part of the US DOE Sun-Lab USA-Trough program. The receiver tested was a new Schott receiver, known as Heat Collector Elements (HCEs). Schott is a new manufacturer of trough HCEs. The Schott HCEs are 4m long; therefore, two were joined and mounted on the LS-2 collector module for the test. The Schott HCE design consists of a 70mm diameter high solar absorptance coated stainless steel (SS) tube encapsulated within a 125mm diameter Pyrex{reg_sign} glass tube with vacuum in the annulus formed between the SS and glass tube to minimize convection heat losses. The Schott HCE design is unique in two regards. First, the bellows used to compensate for the difference in thermal expansion between the metal and glass tube are inside the glass envelope rather than outside. Second, the composition of materials at the glass-to-metal seal has very similar thermal expansion coefficients making the joint less prone to breakage from thermal shock. Sandia National Laboratories provided both the azimuth and elevation collector module tracking systems used during the tests. The test results showed the efficiency of the Schott HCE to be very similar to current HCEs being manufactured by Solel. This testing provided performance verification for the use of Schott tubes with Solargenix trough collector assemblies at currently planned trough power plant projects in Arizona and Nevada.

Moss, Timothy A.; Brosseau, Douglas A.

2005-07-01T23:59:59.000Z

365

Acid Placement in Acid Jetting Treatments in Long Horizontal Wells  

E-Print Network [OSTI]

In the Middle East, extended reach horizontal wells (on the order of 25,000 feet of horizontal displacement) are commonly acid stimulated by jetting acid out of drill pipe. The acid is jetted onto the face of the openhole wellbore as the drill pipe...

Sasongko, Hari

2012-07-16T23:59:59.000Z

366

Steerable vertical to horizontal energy transducer for mobile robots  

DOE Patents [OSTI]

The present invention provides a steerable vertical to horizontal energy transducer for mobile robots that less complex and requires less power than two degree of freedom tilt mechanisms. The present invention comprises an end effector that, when mounted with a hopping actuator, translates along axis (typically vertical) actuation into combined vertical and horizontal motion. The end effector, or foot, mounts with an end of the actuator that moves toward the support surface (typically a floor or the earth). The foot is shaped so that the first contact with the support surface is off the axis of the actuator. Off-axis contact with the support surface generates an on-axis force (typically resulting in vertical motion) and a moment orthogonal to the axis. The moment initiates a horizontal tumbling motion, and tilts the actuator so that its axis is oriented with a horizontal component and continued actuation generates both vertical and horizontal force.

Spletzer, Barry L. (Albuquerque, NM); Fischer, Gary J. (Albuquerque, NM); Feddema, John T. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

367

Yaw dynamics of horizontal axis wind turbines  

SciTech Connect (OSTI)

Designers of a horizontal axis wind turbine yaw mechanism are faced with a difficult decision. They know that if they elect to use a yaw- controlled rotor then the system will suffer increased initial cost and increased inherent maintenance and reliability problems. On the other hand, if they elect to allow the rotor to freely yaw they known they will have to account for unknown and random, though bounded, yaw rates. They will have a higher-risk design to trade-off against the potential for cost savings and reliability improvement. The risk of a yaw-free system could be minimized if methods were available for analyzing and understanding yaw behavior. The complexity of yaw behavior has, until recently, discouraged engineers from developing a complete yaw analysis method. The objectives of this work are to (1) provide a fundamental understanding of free-yaw mechanics and the design concepts most effective at eliminating yaw problems, and (2) provide tested design tools and guidelines for use by free-yaw wind systems manufacturers. The emphasis is on developing practical and sufficiently accurate design methods.

Hansen, A.C. (Utah Univ., Salt Lake City, UT (United States))

1992-05-01T23:59:59.000Z

368

Interphase transport in horizontal stratified cocurrent flow  

SciTech Connect (OSTI)

The problem of interfacial transport is cocurrent, horizontal stratified gas-liquid systems is considered. Local condensation heat transfer coefficients and interface shear stress were obtained from mass and force balances. These balances were based on gas phase pitot traverses at various streamwise locations. Laser anemometer measurements of liquid mean and rms fluctuation velocities were made at similar locations. The laser anemometer data supported the value for the interface shear velocity obtained by the gas phase force balance. Based on cocurrent stratified air-water flow data the noncondensing interface shear stress was found to be a function of the relative velocity betwen the phases and the liquid fraction. Incorporated into Linehan's relation for condensing flow shear stress, the correlation was found to estimate the shear velicity for the condensation data considered. Local condensation heat transfer coefficients and gas absorption mass transfer coefficients were found to be directly proportional ot the shear velocity. If the inner scales u. and /u. are substituted into Lamont's models for the interface mass transfer coefficient, many features of the present correlation for scalar transfer are predicted. The correlations for interfacial shear stress and scalar transport can be combined ot yield an interactive technique suitable for an engineering analysis of the interfacial heat, mass, and momentum transfer in a single driving force cocurrent system.

Jensen, R.J.

1982-01-01T23:59:59.000Z

369

Potential for Development of Solar and Wind Resource in Bhutan  

SciTech Connect (OSTI)

With support from the U.S. Agency for International Development (USAID), the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) produced maps and data of the wind and solar resources in Bhutan. The solar resource data show that Bhutan has an adequate resource for flat-plate collectors, with annual average values of global horizontal solar radiation ranging from 4.0 to 5.5 kWh/m2-day (4.0 to 5.5 peak sun hours per day). The information provided in this report may be of use to energy planners in Bhutan involved in developing energy policy or planning wind and solar projects, and to energy analysts around the world interested in gaining an understanding of Bhutan's wind and solar energy potential.

Gilman, P.; Cowlin, S.; Heimiller, D.

2009-09-01T23:59:59.000Z

370

Horizontal oil well applications and oil recovery assessment. Volume 1: Success of horizontal well technology, Final report  

SciTech Connect (OSTI)

Horizontal technology has been applied in over 110 formations in the USA. Volume I of this study addresses the overall success of horizontal technology, especially in less-publicized formations, i.e., other than the Austin Chalk, Bakken, and Niobrara. Operators in the USA. and Canada were surveyed on a formation-by-formation basis by means of a questionnaire. Response data were received describing horizontal well projects in 58 formations in the USA. and 88 in Canada. Operators responses were analyzed for trends in technical and economic success based on lithology (clastics and carbonates) and resource type (light oil, heavy oil, and gas). The potential impact of horizontal technology on reserves was also estimated. A forecast of horizontal drilling activity over the next decade was developed.

Deskins, W.G.; McDonald, W.J.; Knoll, R.G.; Springer, S.J.

1995-03-01T23:59:59.000Z

371

Fraced horizontal well shows potential of deep tight gas  

SciTech Connect (OSTI)

Successful completion of a multiple fraced, deep horizontal well demonstrated new techniques for producing tight gas sands. In Northwest Germany, Mobil Erdgas-Erdoel GmbH drilled, cased, and fraced the world`s deepest horizontal well in the ultra-tight Rotliegendes ``Main`` sand at 15,687 ft (4,783 m) true vertical depth. The multiple frac concept provides a cost-efficient method to economically produce significant gas resources in the ultra-tight Rotliegendes ``Main`` sand. Besides the satisfactory initial gas production rate, the well established several world records, including deepest horizontal well with multiple fracs, and proved this new technique to develop ultra-tight sands.

Schueler, S. [Mobil Erdgas-Erdoel GmbH, Celle (Germany); Santos, R. [Mobil Erdgas-Erdoel GmbH, Hamburg (Germany)

1996-01-08T23:59:59.000Z

372

Time exposure performance of Mo-Au Gibbsian segregating alloys for extreme ultraviolet collector optics  

SciTech Connect (OSTI)

Successful implementation of extreme ultraviolet (EUV) lithography depends on research and progress toward minimizing collector optics degradation from intense plasma erosion and debris deposition. Thus studying the surface degradation process and implementing innovative methods, which could enhance the surface chemistry causing the mirrors to suffer less damage, is crucial for this technology development. A Mo-Au Gibbsian segregation (GS) alloy is deposited on Si using a dc dual-magnetron cosputtering system and the damage is investigated as a result of time dependent exposure in an EUV source. A thin Au segregating layer is maintained through segregation during exposure, even though overall erosion in the Mo-Au sample is taking place in the bulk. The reflective material, Mo, underneath the segregating layer is protected by this sacrificial layer, which is lost due to preferential sputtering. In addition to theoretical work, experimental results are presented on the effectiveness of the GS alloys to be used as potential EUV collector optics material.

Qiu Huatan; Srivastava, Shailendra N.; Thompson, Keith C.; Neumann, Martin J.; Ruzic, David N

2008-05-01T23:59:59.000Z

373

Discovery of Non-random Spatial Distribution of Impacts in the Stardust Cometary Collector  

SciTech Connect (OSTI)

We report the discovery that impacts in the Stardust cometary collector are not distributed randomly in the collecting media, but appear to be clustered on scales smaller than {approx} 10 cm. We also report the discovery of at least two populations of oblique tracks. We evaluated several hypotheses that could explain the observations. No hypothesis was consistent with all the observations, but the preponderance of evidence points toward at least one impact on the central Whipple shield of the spacecraft as the origin of both clustering and low-angle oblique tracks. High-angle oblique tracks unambiguously originate from a non-cometary impact on the spacecraft bus just forward of the collector.

Westphal, A J; Bastien, R K; Borg, J; Bridges, J; Brownlee, D E; Burchell, M J; Cheng, A F; Clark, B C; Djouadi, Z; Floss, C; Franchi, I; Gainsforth, Z; Graham, G; Green, S F; Heck, P R; Horanyi, M; Hoppe, P; Horz, F P; Huth, J; Kearsley, A; Leroux, H; Marhas, K; Nakamura-Messenger, K; Sandford, S A; See, T H; Stadermann, F J; Teslich, N E; Tsitrin, S; Warren, J L; Wozniakiewicz, P J; Zolensky, M E

2007-04-06T23:59:59.000Z

374

Aerogel keystones: extraction of complete hypervelocity impact events from aerogel collectors  

E-Print Network [OSTI]

In January 2006, the Stardust mission will return the first samples from a solid solar-system body since Apollo, and the first samples of contemporary interstellar dust ever collected. Although sophisticated laboratory instruments exist for the analysis of Stardust samples, techniques for the recovery of particles and particle residues from aerogel collectors remain primitive. Here we describe our recent progress in developing techniques for extracting small volumes of aerogel, which we have called ``keystones,'' which completely contain particle impacts but minimize the damage to the surrounding aerogel collector. These keystones can be fixed to custom-designed micromachined silicon fixtures (so-called ``microforklifts''). In this configuration the samples are self-supporting, which can be advantageous in situations in which interference from a supporting substrate is undesirable. The keystones may also be extracted and placed onto a substrate without a fixture. We have also demonstrated the capability of homologously crushing these unmounted keystones for analysis techniques which demand flat samples.

Andrew J. Westphal; Christopher J. Snead; Anna L. Butterworth; Giles A. Graham; John P. Bradley; Sasa Bajt; Patrick G. Grant; Graham Bench; Sean Brennan; Piero Pianetta

2003-12-17T23:59:59.000Z

375

Aerogel Keystones: Extraction Of Complete Hypervelocity Impact Events From Aerogel Collectors  

SciTech Connect (OSTI)

In January 2006, the Stardust mission will return the first samples from a solid solar-system body since Apollo, and the first samples of contemporary interstellar dust ever collected. Although sophisticated laboratory instruments exist for the analysis of Stardust samples, techniques for the recovery of particles and particle residues from aerogel collectors remain primitive. Here we describe our recent progress in developing techniques for extracting small volumes of aerogel, which we have called ''keystones,'' which completely contain particle impacts but minimize the damage to the surrounding aerogel collector. These keystones can be fixed to custom-designed micromachined silicon fixtures (so-called ''microforklifts''). In this configuration the samples are self-supporting, which can be advantageous in situations in which interference from a supporting substrate is undesirable. The keystones may also be extracted and placed onto a substrate without a fixture. We have also demonstrated the capability of homologously crushing these unmounted keystones for analysis techniques which demand flat samples.

Westphal, A J; Snead, C; Butterworth, A; Graham, G A; Bradley, J; Bajt, S; Grant, P G; Bench, G; Brennan, S; Piannetta, P

2003-11-07T23:59:59.000Z

376

Midtemperature Solar Systems Test Facility Program for predicting thermal performance of line-focusing, concentrating solar collectors  

SciTech Connect (OSTI)

The program at Sandia National Laboratories, Albuquerque, for predicting the performance of line-focusing solar collectors in industrial process heat applications is described. The qualifications of the laboratories selected to do the testing and the procedure for selecting commercial collectors for testing are given. The testing program is outlined. The computer program for performance predictions is described. An error estimate for the predictions and a sample of outputs from the program are included.

Harrison, T.D.

1980-11-01T23:59:59.000Z

377

Optical performance of the TBC-2 solar collector before and after the 1993 mirror lustering  

SciTech Connect (OSTI)

In 1993, the mirror facets of one of Sandia`s point-focusing solar collectors, the Test Bed Concentrator {number_sign}2 (TBC-2), were reconditioned. The concentrator`s optical performance was evaluated before and after this operation. This report summarizes and compares the results of these tests. The tests demonstrated that the concentrator`s total power and peak flux were increased while the overall flux distribution in the focal plane remained qualitatively the same.

Houser, R.; Strachan, J. [Sandia National Labs., Albuquerque, NM (United States). Solar Thermal Test Dept.

1995-02-01T23:59:59.000Z

378

Unglazed transpired solar collector having a low thermal-conductance absorber  

DOE Patents [OSTI]

An unglazed transpired solar collector using solar radiation to heat incoming air for distribution, comprises an unglazed absorber formed of low thermal-conductance material having a front surface for receiving the solar radiation and openings in the unglazed absorber for passage of the incoming air such that the incoming air is heated as it passes towards the front surface of the absorber and the heated air passes through the openings in the absorber for distribution. 3 figs.

Christensen, C.B.; Kutscher, C.F.; Gawlik, K.M.

1997-12-02T23:59:59.000Z

379

Unglazed transpired solar collector having a low thermal-conductance absorber  

DOE Patents [OSTI]

An unglazed transpired solar collector using solar radiation to heat incoming air for distribution, comprising an unglazed absorber formed of low thermal-conductance material having a front surface for receiving the solar radiation and openings in the unglazed absorber for passage of the incoming air such that the incoming air is heated as it passes towards the front surface of the absorber and the heated air passes through the openings in the absorber for distribution.

Christensen, Craig B. (Boulder, CO); Kutscher, Charles F. (Golden, CO); Gawlik, Keith M. (Boulder, CO)

1997-01-01T23:59:59.000Z

380

Simulation studies of waterflood performance with horizontal wells  

E-Print Network [OSTI]

Two-and three-dimensional simulation studies have been carried out to evaluate waterflood oil recovery in a 40-acre 5-spot pattern using horizontal and vertical well systems. The three-dimensional simulation results indicate that the parameters...

Ferreira, Horacio

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Optimization of fractured well performance of horizontal gas wells  

E-Print Network [OSTI]

In low-permeability gas reservoirs, horizontal wells have been used to increase the reservoir contact area, and hydraulic fracturing has been further extending the contact between wellbores and reservoirs. This thesis presents an approach...

Magalhaes, Fellipe Vieira

2009-06-02T23:59:59.000Z

382

Horizontal non-contact slumping of flat glass  

E-Print Network [OSTI]

This paper continues the work of M. Akilian and A. Husseini on developing a noncontact glass slumping/shaping process. The shift from vertical slumping to horizontal slumping is implemented and various technologies required ...

Sung, Edward, S.M. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

383

The time to reach pseudosteady-state in horizontal wells  

E-Print Network [OSTI]

Engineers need to estimate the expected productivity of horizontal wells. We need to know how long it takes to reach pseudosteady-state to accept that estimation. When all boundaries influence the pressure distribution in the drainage area...

Al-Kahtani, Abdulghafour

1998-01-01T23:59:59.000Z

384

Refrigerant forced-convection condensation inside horizontal tubes  

E-Print Network [OSTI]

Condensing heat transfer rates inside a horizontal tube were investigated -for large quality changes across the tube. The proposed correlation is a modification of the work of Rohsenow, Webber and Ling [29]. The result of ...

Bae, Soonhoon

1968-01-01T23:59:59.000Z

385

Horizontal Beam Tubes - HFIR Technical Parameters | ORNL Neutron...  

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

Beam Tubes The reactor has four horizontal beam tubes that supply the neutrons to the neutron scattering instruments. Details for each beam tube and instrument can be found on...

386

Determination of Elastic Twist in Horizontal Axis Wind Turbines (HAWTs)  

SciTech Connect (OSTI)

This report presents the results of a project at the Alternative Energy Institute (AEI) which measured and calculated the elastic twist of three representative composite horizontal-axis blades: Carter 300, Gougeon ESI 54, and UTRC 8 kW.

Stoddard, F.; Nelson, V.; Starcher, K.; Andrews, B.

2006-06-01T23:59:59.000Z

387

Concentrating-collector mass-production feasibility. Volume I. Final report  

SciTech Connect (OSTI)

The Performance Prototype Trough (PPT) Concentrating Collector consists of four 80-foot modules in a 320-foot row. The collector was analyzed, including cost estimates and manufacturing processes to produce collectors in volumes from 100 to 100,000 modules per year. The four different reflector concepts considered were the sandwich reflector structure, sheet metal reflector structure, molded reflector structure, and glass laminate structure. The sheet metal and glass laminate structures are emphasized with their related structure concepts. A preliminary manufacturing plan is offered that includes: documentation of the manufacturing process with production flow diagrams; labor and material costs at various production levels; machinery and equipment requirements including preliminary design specifications; and capital investment costs for a new plant. Of five reflector designs considered, the two judged best and considered at length are thin annealed glass and steel laminate on steel frame panel and thermally sagged glass. Also discussed are market considerations, costing and selling price estimates, design cost analysis and make/buy analysis. (LEW)

Not Available

1981-11-02T23:59:59.000Z

388

Emitter tests in an open thermionic converter with vapor injection through the collector  

SciTech Connect (OSTI)

Mo and Pt emitters and a Ni collector with 400 laser-bored holes were used in an ''open'' thermionic converter. The alkali vapor was introduced into the converter through the array of holes in the collector from an adjacent alkali metal reservoir with separately controlled temperature. The overall results from the open thermionic converter are comparable to results from enclosed converters. The results found with a Cs plasma are encouraging, with barrier indices down to below 1.8 eV, at emitter temperatures around 1500 K in the case of a Mo emitter. The output power density was around 3.5 W cm/sup -2/. In the case of a Pt emitter, both Cs and K plasmas were used, with power densities up to 5.7 and 1.8 W cm/sup -2/, respectively close to 1800 K. The structure of the laser-bored collector may have contributed to these results, as well as the efficient removal of impurities in the ''open'' converter.

Wriedt, S.; Moeller, K.; Holmlid, L.

1986-12-15T23:59:59.000Z

389

Copper corrosion and its relationship to solar collectors:a compendium.  

SciTech Connect (OSTI)

Copper has many fine qualities that make it a useful material. It is highly conductive of both heat and electricity, is ductile and workable, and reasonably resistant to corrosion. Because of these advantages, the solar water heating industry has been using it since the mid-1970s as the material of choice for collectors, the fundamental component of a solar water heating system. In most cases copper has performed flawlessly, but in some situations it has been known to fail. Pitting corrosion is the usual failure mode, but erosion can also occur. In 2000 Sandia National Laboratories and the Copper Development Association were asked to analyze the appearance of pin-hole leaks in solar collector units installed in a housing development in Arizona, and in 2002 Sandia analyzed a pitting corrosion event that destroyed a collector system at Camp Pendleton. This report includes copies of the reports and accounts of these corrosion failures, and provides a bibliography with references to many papers and articles that might be of benefit to the solar community. It consolidates in a single source information that has been accumulated at Sandia relative to copper corrosion, especially as it relates to solar water heaters.

Menicucci, David F.; Mahoney, Alan Roderick

2007-07-01T23:59:59.000Z

390

Optimization of well length in waterflooding a five-spot pattern of horizontal wells  

E-Print Network [OSTI]

for the horizontal wells and provide a good return on investment. Horizontal Wells in Waterflood Pr t A worldwide interest exists today in drilling horizontal wells to increase productivity, Horizontal wells can be used in any phase of reservoir recovery... efficiency7. Several investigatorss-ic have studied waterflooding using horizontal wells. droman et al, s reported a field application using horizontal wells in the Prudhoe Bay Unit where the main reservoir drive mechanism is gas cap expansion...

Jimenez, Zulay J.

1992-01-01T23:59:59.000Z

391

Horizontal Well Placement Optimization in Gas Reservoirs Using Genetic Algorithms  

E-Print Network [OSTI]

University Co-Chairs of Advisory Committee, Dr. Ding Zhu Dr. Hadi Nasrabadi Horizontal well placement determination within a reservoir is a significant and difficult step... optimization is an important criterion during the reservoir development phase of a horizontal-well project in gas reservoirs, but it is less significant to vertical wells in a homogeneous reservoir. It is also shown that genetic algorithms are an extremely...

Gibbs, Trevor Howard

2011-08-08T23:59:59.000Z

392

Kick circulation analysis for extended reach and horizontal wells  

E-Print Network [OSTI]

KICK CIRCULATION ANALYSIS FOR EXTENDED-REACH AND HORIZONTAL WELLS A Thesis by MAXIMILIAN M. LONG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 2004 Major Subject: Petroleum Engineering KICK CIRCULATION ANALYSIS FOR EXTENDED-REACH AND HORIZONTAL WELLS A Thesis by MAXIMILIAN M. LONG Submitted...

Long, Maximilian Mark

2005-02-17T23:59:59.000Z

393

SATURATED-SUBCOOLED STRATIFIED FLOW IN HORIZONTAL PIPES  

SciTech Connect (OSTI)

Advanced light water reactor systems are designed to use passive emergency core cooling systems with horizontal pipes that provide highly subcooled water from water storage tanks or passive heat exchangers to the reactor vessel core under accident conditions. Because passive systems are driven by density gradients, the horizontal pipes often do not flow full and thus have a free surface that is exposed to saturated steam and stratified flow is present.

Richard Schultz

2010-08-01T23:59:59.000Z

394

Effects of axial plate heat conduction on the thermal performance of a laminar counterflow flat plate heat exchanger  

E-Print Network [OSTI]

UC (I ~ M) ?0 e DO VC {I, N) ?O. DO UH(I, l)=0 DO VH (I, 1) ?O. DO ALONG FLUID CENTERLINE DO 6 I?1, N FOR VOBTICITY AMD STREAM WH(I, M) =0 ODO WC (I ~ 'l) =Do ODD PSIC(I ~ 1) =le ODO-RD PSIH fI, N) 1. ODO-BD CENTERLINE VALOIS FOB TH...-VELOCITY HOT' CALL POUT (VH r NrN) WRITE (6, 80) PRINT ~ HOT ILUID TEHPZRATURE ~ CALL POUT, {TH ~ N, N) llRITE (6 ~ 80) IF (IPLAG ZO. 1) GO TO 37 37 43 712 PRINTi o SOLID TEMPERATURE ~ CALL POUT (TS, H, 1) GO TO 42 WRITE (6 ~ 43) FORMAT(/, 20X, i...

Demko, Jonathan Alexander

2012-06-07T23:59:59.000Z

395

DESIGN AND FABRICATION OF A FLAT-PLATE MULTICHANNEL HE-COOLED REFRACTORY HX FOR DIVERTOR APPLICATIONS  

E-Print Network [OSTI]

) that employs open-cell refractory foam to enhance heat transfer from the heated plate to the helium coolant of research regarding refractory metal based helium- cooled divertors with enhanced heat transfer in plate these in that foam is used as a porous medium for heat transfer enhancement as detailed in previous publications5

Ghoniem, Nasr M.

396

Climatically Diverse Data Set for Flat-Plate PV Module Model Validations (Presentation), NREL (National Renewable Energy Laboratory)  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New SubstationClean Communities of WesternVail GlobalPROGRAM

397

Assess the Efficacy of an Aerial Distant Observer Tool Capable of Rapid Analysis of Large Sections of Collector Fields: FY 2008 CSP Milestone Report, September 2008  

SciTech Connect (OSTI)

We assessed the feasibility of developing an aerial Distant Observer optical characterization tool for collector fields in concentrating solar power plants.

Jorgensen, G.; Burkholder, F.; Gray, A.; Wendelin, T.

2009-02-01T23:59:59.000Z

398

Standard test method for isotopic abundance analysis of uranium hexa?uoride and uranyl nitrate solutions by multi-collector, inductively coupled plasma-mass spectrometry  

E-Print Network [OSTI]

Standard test method for isotopic abundance analysis of uranium hexa?uoride and uranyl nitrate solutions by multi-collector, inductively coupled plasma-mass spectrometry

American Society for Testing and Materials. Philadelphia

2008-01-01T23:59:59.000Z

399

Midtemperature Solar Systems Test Facility predictions for thermal performance of the Suntec solar collector with heat-formed glass reflector surface  

SciTech Connect (OSTI)

Thermal performance predictions are presented for the Suntec solar collector, with heat-formed glass reflector surface, for three output temperatures at five cities in the United States.

Harrison, T.D.

1980-11-01T23:59:59.000Z

400

Air drilling has some pluses for horizontal wells  

SciTech Connect (OSTI)

Drilling horizontal wells with air as the circulating medium is not a common practice; however, air has come distinct advantages over drilling mud. They are: Significant increase in rate of penetration which leads to shorter drilling time. Elimination of lost circulation problems, especially in areas of very low bottom hole pressures. Continual drill stem test of potential producing formations. Minimal damage to the formation. Unfortunately, there are some disadvantages to drilling with air. Downhole motor life is shorter and less predictable. No measurement-while-drilling (MWD) system is currently available that will work consistently in air drilling environments. Hole cleaning is a problem at inclinations above 50{degree}. The horizontal section length is reduced because of the increased friction (drag) between the drillstring and borehole. The types of lithologies and targets are limited. Several horizontal wells have been successfully drilled with air or foam since 1986. At a minimum, operators drill the horizontal section with air or foam to eliminate lost circulation problems in low pressure or partially depleted reservoirs and to reduce formation damage due to drilling fluid invasion. However, problems have been encountered in drilling horizontal wells with air. Not all of the problems are unique to air drilling, but some may be exaggerated by the conditions in an air-drilled hole.

Carden, R.S. (Grace, Shursen, Moore and Associates, Inc., Amarillo, TX (US))

1991-04-08T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Application of horizontal drilling to tight gas reservoirs  

SciTech Connect (OSTI)

Vertical fractures and lithologic heterogeneity are extremely important factors controlling gas flow rates and total gas recovery from tight (very low permeability) reservoirs. These reservoirs generally have in situ matrix permeabilities to gas of less than 0.1 md. Enhanced gas recovery methods have usually involved hydraulic fracturing; however, the induced vertical hydraulic fractures almost always parallel the natural fracture and may not be an efficient method to establish a good conduit to the wellbore. Horizontal drilling appears to be an optimum method to cut across many open vertical fractures. Horizontal holes will provide an efficient method to drain heterogeneous tight reservoirs even in unfractured rocks. Although many horizontal wells have now been completed in coalbed methane and oil reservoirs, very few have been drilled to exclusively evaluate tight gas reservoirs. The U.S. Department of Energy (DOE) has funded some horizontal and slanthole drilling in order to demonstrate the applicability of these techniques for gas development. Four DOE holes have been drilled in Devonian gas shales in the Appalachian basin, and one hole has been drilled in Upper Cretaceous tight sandstones in the Piceance basin of Colorado. The Colorado field experiment has provided valuable information on the abundance and openness of deeply buried vertical fractures in tight sandstones. These studies, plus higher gas prices, should help encourage industry to begin to further utilize horizontal drilling as a new exploitation method for tight gas reservoirs.

Spencer, C.W. (U.S. Geological Survey, Lakewood, CO (United States)); Lorenz, J.C. (Sandia National Labs., Albuquerque, NM (United States)); Brown, C.A. (Synder Oil Co., Denver, CO (United States))

1991-03-01T23:59:59.000Z

402

DEMONSTRATION OF A FULL-SCALE RETROFIT OF THE ADVANCED HYBRID PARTICULATE COLLECTOR TECHNOLOGY  

SciTech Connect (OSTI)

The Advanced Hybrid Particulate Collector (AHPC), developed in cooperation between W.L. Gore & Associates and the Energy & Environmental Research Center (EERC), is an innovative approach to removing particulates from power plant flue gas. The AHPC combines the elements of a traditional baghouse and electrostatic precipitator (ESP) into one device to achieve increased particulate collection efficiency. As part of the Power Plant Improvement Initiative (PPII), this project was demonstrated under joint sponsorship from the U.S. Department of Energy and Otter Tail Power Company. The EERC is the patent holder for the technology, and W.L. Gore & Associates was the exclusive licensee for this project. The project objective was to demonstrate the improved particulate collection efficiency obtained by a full-scale retrofit of the AHPC to an existing electrostatic precipitator. The full-scale retrofit was installed on an electric power plant burning Powder River Basin (PRB) coal, Otter Tail Power Company's Big Stone Plant, in Big Stone City, South Dakota. The $13.4 million project was installed in October 2002. Project related testing concluded in December 2005. The following Final Technical Report has been prepared for the project entitled ''Demonstration of a Full-Scale Retrofit of the Advanced Hybrid Particulate Collector Technology'' as described in DOE Award No. DE-FC26-02NT41420. The report presents the operation and performance results of the system.

Tom Hrdlicka; William Swanson

2005-12-01T23:59:59.000Z

403

Horizontal Air Flow Drying Foods at Home Safely  

E-Print Network [OSTI]

Horizontal Air Flow Drying Foods at Home Safely Choosing a Food Dehydrator Drying is one. The thermostat should go up to 160 degrees F. The unit should have a fan or blower for air circulation. Mesh purposes. Types of Dehydrators There are two main types of dehydrators: those with vertical air flow

404

A Simplified Morphing Blade for Horizontal Axis Wind Turbines  

E-Print Network [OSTI]

A Simplified Morphing Blade for Horizontal Axis Wind Turbines Weijun WANG , St´ephane CARO, Fouad salinas@hotmail.com The aim of designing wind turbine blades is to improve the power capture ability by adjusting the twist of the blade's root and tip. To evaluate the performance of wind turbine blades

Recanati, Catherine

405

The Model Morphing Approach -Horizontal Transformations between Business Process  

E-Print Network [OSTI]

The Model Morphing Approach - Horizontal Transformations between Business Process Models Marion and business to busi- ness interoperability, there is a need for model transformations in the area of business this paper concentrates on transformations of models between different business process modeling languages

406

Experimental investigation of a horizontal flexible-membrane wave barrier  

E-Print Network [OSTI]

A series of experiments is conducted in a two-dimensional glass-walled wave tank to confirm numerical solutions based on two-dimensional linear hydro-elastic theory for a horizontal flexible-membrane wave barrier. The model test is performed by a...

Choi, Hae-Jin

1997-01-01T23:59:59.000Z

407

Predicting horizontal well performance in solution-gas drive reservoirs  

E-Print Network [OSTI]

of these wells were located in France and the fourth was located in waters off the coast cf Italy. Horizontal sections over 1000 ft were drilled and well productivities of up to twenty times those of r eighboring ve !ical wel!s were reported In 1979, ARCO...

Plahn, Sheldon Von

1986-01-01T23:59:59.000Z

408

Monitoring and Evaluation of the Prototype Surface Collector at Bonneville First Powerhouse in 2000: Synthesis of Results  

SciTech Connect (OSTI)

This report describes research done to evaluate the Prototype Surface Collector at Bonneville Dam, Powerhouse I, on the Columbia River. The surface collector is being evaluated as a means for bringing downstream migrating salmon and steelhead through the powerhouse while avoiding the turbines. The report describes evaluations conducted by PNNL, National Marine Fisheries Service, and various contractors using radio telemetry, hydroacoustics, and computational fluid dynamics models. The evaluation will provide information to the U.S. Army Corps of Engineers for their 2001 decision on whether to use surface flow bypass or extended-length submersible bar screens for long-term smolt passage at Bonneville Dam.

Johnson, Gary E.; Carlson, Thomas J.

2001-06-01T23:59:59.000Z

409

2D-simulation and analysis of lateral SiC N-emitter SiGe P-base Schottky metal-collector (NPM) HBT on SOI  

E-Print Network [OSTI]

2D-simulation and analysis of lateral SiC N-emitter SiGe P-base Schottky metal-collector (NPM) HBT metal-collector NPM HBT on SOI. The proposed lateral NPM HBT performance has been evaluated in detail silicon NPM BJT structures. Based on our simu- lation results, it is observed that while both the lateral

Kumar, M. Jagadesh

410

Midtemperature solar systems test facility predictions for thermal performance based on test data: AAI solar collector with pressure-formed glass reflector surface  

SciTech Connect (OSTI)

Sandia National Laboratories, Albuquerque (SNLA), is currently conducting a program to predict the performance and measure the characteristics of commercially available solar collectors that have the potential for use in industrial process heat and enhance oil recovery applications. The thermal performance predictions for the AAI solar line-focusing slat-type collector for five cities in the US are presented. (WHK)

Harrison, T.D.

1981-03-01T23:59:59.000Z

411

Midtemperature solar systems test faclity predictions for thermal performance based on test data: Solar Kinetics T-700 solar collector with glass reflector surface  

SciTech Connect (OSTI)

Sandia National Laboratories, Albuquerque (SNLA), is currently conducting a program to predict the performance and measure the characteristics of commercially available solar collectors that have the potential for use in industrial process heat and enhanced oil recovery applications. The thermal performance predictions for the Solar Kinetics solar line-focusing parabolic trough collector for five cities in the US are presented. (WHK)

Harrison, T.D.

1981-03-01T23:59:59.000Z

412

Horizontal drilling the Bakken Formation, Williston basin: A new approach  

SciTech Connect (OSTI)

Horizontal drilling is an attractive new approach to exploration and development of the Mississippian/Devonian Bakken Formation in the southwestern part of North Dakota. This drilling technique increases the probability of success, the profit potential, the effective drainage area maximizing recoverable reserves, and the productivity by encountering more natural occurring fractures. The target formation, the Mississippian/Devonian Bakken, consists of three members in an overlapping relationship, a lower organic-rich black shale, a middle siltstone/limestone, and an upper organic-rich black shale. It attains a maximum thickness of 145 ft and thins to a feather edge along its depositional limit. Considered to be a major source rock for the Williston basin, the Bakken is usually overpressured where productive. Overpressuring is attributed to intense hydrocarbon generation. Reservoir properties are poor with core fluid porosities being generally 5% or less and permeabilities ranging from 0.1 to 0.2 md. The presence of natural fractures in the shale are necessary for production. Two types of fractures are associated with Bakken reservoirs: large vertical fractures (of tectonic origin) and microfractures (probably related to hydrocarbon generation). An economic comparison between horizontal and vertical wells show that well completion costs are approximately two times higher (average costs; $1,500,000 for a horizontal to $850,000 for a vertical) with average payout for horizontal wells projected to occur in half the time (1.5 yr instead of 3.4 yr). Projected production and reserves are considered to be 2 to 4 times greater from a horizontal well.

Lefever, J.A. (North Dakota Geological Survey, Grand Forks (USA))

1990-05-01T23:59:59.000Z

413

InGaAs/InP DHBTs WITH A 75nm COLLECTOR, 20nm BASE DEMONSTRATING 544 GHz f , BVCEO = 3.2V, and BVCBO = 3.4V  

E-Print Network [OSTI]

InGaAs/InP DHBTs WITH A 75nm COLLECTOR, 20nm BASE DEMONSTRATING 544 GHz f , BVCEO = 3.2V, and BVCBOGaAs base and a 75 nm InP collector containing an InGaAs/InAlAs superlattice grade. These devices exhibit collector thickness for any HBT. The devices have been scaled vertically for reduced base and collector

Rodwell, Mark J. W.

414

Collector-up light-emitting charge injection transistors in n-lnGaAs/lnAIAs/ plllnGaAs and n-lnGaAs/lnP/p-InGaAs heterostructures  

E-Print Network [OSTI]

Collector-up light-emitting charge injection transistors in n-lnGaAs/lnAIAs/ plllnGaAs and n (Received 23 November 1992; accepted for publication 4 March 1993) The realization of collector-up light for the collector stripe definition. Electrons, injected over the wide-gap heterostructure barrier (InAlAs or In

Luryi, Serge

415

FTIR ANALYSIS OF AEROGEL KEYSTONES FROM THE STARDUST INTERSTELLAR DUST COLLECTOR: ASSESSMENT OF TERRESTRIAL ORGANIC CONTAMINATION AND X-RAY  

E-Print Network [OSTI]

FTIR ANALYSIS OF AEROGEL KEYSTONES FROM THE STARDUST INTERSTELLAR DUST COLLECTOR: ASSESSMENT was composed of aerogel tiles (85% of the collecting area) and aluminum foils and was exposed are expected to be exceedingly small. Here, we present a summary of FTIR analyses of over 20 aerogel keystones

Nittler, Larry R.

416

Geological aspects of the first horizontal well drilled in Romania  

SciTech Connect (OSTI)

In 1979 on the Lebada Est field of the Romanian Offshore of the Black Sea between the Albian and the Eocene hydrocarbon accumulations, the Upper Cretaceous hydrocarbon accumulation was discovered. Situated in the Coniacian-Santonian and Turonian limey rocks, this accumulation cannot be produced efficiently by conventional wells. Some geological aspects which characterize the field such as: the physical properties of the reservoir rocks, the low effective thickness, heterogeneity, the vertical fissure and microfissure system and other production and economic aspects led to the conclusion that oil can be produced efficiently by horizontal wells or high angle wells. The benefits of horizontal well trajectory to produce the oil from the reservoir with this geometry are many and they were proved by the high rate of production as compared with the production tests of the vertical wells. After a long period of time when the reservoir was considered to be economically inefficient it can be finally produced.

Baleanu, C.; Petrom, R.A. [Institute for Research and Technology, Prahova (Romania)

1995-08-01T23:59:59.000Z

417

The Critical Rayleigh Number in Horizontal Convection for $\\Pran=1$  

E-Print Network [OSTI]

We report the numerical simulations of the horizontal convection within a rectangle cavity tank at high Rayleigh numbers. The physical solution of horizontal convection depends the space resolution of the meshes. The mesh number $N$ is proportion to $Ra^{1/3}$. The unstable numerical solutions are obtained as $Npower law also implies that the space resolution is dominated by the viscosity and heat diffusion. It implies that the special resolution is dominated by viscosity and thermal diffusivity but the length of the tank. Moreover, there is a Hopf bifurcation from steady solutions to unsteady solutions and the critical Rayleigh number $Ra_c$ is obtained as $5.53\\times 10^8

Sun, L; Sun, De-Jun; Sun, Liang

2007-01-01T23:59:59.000Z

418

Horizontal-well pilot waterflood tests shallow, abandoned field  

SciTech Connect (OSTI)

This paper reports on the suitability of using horizontal wells in a waterflood of shallow, partially depleted sands which will be tested in the Jennings field in Oklahoma. The vertical wells drilled in the Jennings field intersect several well-known formations such as Red Fork, Misner, and Bartlesville sand. Most of these formations have been produced over a number of years, and presently no wells are producing in the field. In the 1940s, 1950s, and 1960s, wells were drilled on 10-acre spacing, and the last well was plugged in 1961. The field was produced only on primary production and produced approximately 1 million bbl of oil. Because the field was not waterflooded, a large potential exists to produce from the field using secondary methods. To improve the economics for the secondary process, a combination of horizontal and vertical wells was considered.

McAlpine, J.L. (White Buffalo Petroleum Co., Tulsa, OK (US)); Joshi, S.D. (Joshi Technologies International Inc., Tulsa, OK (US))

1991-08-05T23:59:59.000Z

419

Evaluation of Horizontal Seismic Hazard of Shahrekord, Iran  

SciTech Connect (OSTI)

This paper presents probabilistic horizontal seismic hazard assessment of Shahrekord, Iran. It displays the probabilistic estimate of Peak Ground Horizontal Acceleration (PGHA) for the return period of 75, 225, 475 and 2475 years. The output of the probabilistic seismic hazard analysis is based on peak ground acceleration (PGA), which is the most common criterion in designing of buildings. A catalogue of seismic events that includes both historical and instrumental events was developed and covers the period from 840 to 2007. The seismic sources that affect the hazard in Shahrekord were identified within the radius of 150 km and the recurrence relationships of these sources were generated. Finally four maps have been prepared to indicate the earthquake hazard of Shahrekord in the form of iso-acceleration contour lines for different hazard levels by using SEISRISK III software.

Amiri, G. Ghodrati [Iran University of Science and Technology--Islamic Azad University of Shahrekord, Narmak, Tehran 16846 (Iran, Islamic Republic of); Dehkordi, M. Raeisi [Department of Civil Engineering, Islamic Azad University of Shahrekord (Iran, Islamic Republic of); Amrei, S. A. Razavian [College of Civil Engineering, Iran University of Science and Technology, Tehran (Iran, Islamic Republic of); Kamali, M. Koohi [Department of Civil Engineering, Islamic Azad University of Shahrekord (Iran, Islamic Republic of)

2008-07-08T23:59:59.000Z

420

Horizontal film balance having wide range and high sensitivity  

DOE Patents [OSTI]

A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed.

Abraham, B.M.; Miyano, K.; Ketterson, J.B.

1981-03-05T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Horizontal film balance having wide range and high sensitivity  

DOE Patents [OSTI]

A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed. 5 figs.

Abraham, B.M.; Miyano, K.; Ketterson, J.B.

1983-11-08T23:59:59.000Z

422

Horizontal film balance having wide range and high sensitivity  

DOE Patents [OSTI]

A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed.

Abraham, Bernard M. (Oak Park, IL); Miyano, Kenjiro (Downers Grove, IL); Ketterson, John B. (Evanston, IL)

1983-01-01T23:59:59.000Z

423

A mathematical simulation of horizontal drain-hole performance  

E-Print Network [OSTI]

Science and Technology, Kee-Lung, Taiwan, Republic of China Chairman of Advisory Comnittee: Dr. Ching H. Wu The application of horizontal drain-hole in petroleum industry represents one of the new developments in oil recovery techniques. Many... production condition was simulated. The validity of the computational algorithm employed in the simulator was ascertained using the results obtained from a general purpose black oil simulator, BOSS-AIM. The verification runs were made under a semi...

Cheng, Thomas Ru-Kang

1984-01-01T23:59:59.000Z

424

Tanpopo cosmic dust collector: Silica aerogel production and bacterial DNA contamination analysis  

E-Print Network [OSTI]

Hydrophobic silica aerogels with ultra-low densities have been designed and developed as cosmic dust capture media for the Tanpopo mission which is proposed to be carried out on the International Space Station. Glass particles as a simulated cosmic dust with 30 \\mu m in diameter and 2.4 g/cm^3 in density were successfully captured by the novel aerogel at a velocity of 6 km/s. Background levels of contaminated DNA in the ultra-low density aerogel were lower than the detection limit of a polymerase chain reaction assay. These results show that the manufactured aerogel has good performance as a cosmic dust collector and sufficient quality in respect of DNA contamination. The aerogel is feasible for the biological analyses of captured cosmic dust particles in the astrobiological studies.

Tabata, Makoto; Yokobori, Shin-ichi; Kawai, Hideyuki; Takahashi, Jun-ichi; Yano, Hajime; Yamagishi, Akihiko

2011-01-01T23:59:59.000Z

425

Degradation of parabolic-cylindrical solar collector performance: receiver misalignments and tracking inaccuracies  

SciTech Connect (OSTI)

Studies were conducted to determine the performance of a 2-m, 90/sup 0/ E-W oriented solar reflector trough and a receiver assembly consisting of a receiver tube surrounded by a concentric outer glass envelope. Three receiver tube diameters (2.223, 2.54, and 3.175 cm o.d. tubes) were analyzed subject to a variety of collector errors including receiver misalignments and tracking bias, to assess the detrimental effects of these problems. Of the possible problems considered, it was shown that a misalignment of the receiver assembly above the focal plane is most critical, since the absorbed solar fluxes are concentrated near the base of the tube, leading to possible ''hot spots.'' In addition, as a result of this work, it was shown that the intermediate receiver tube size (2.54 cm o.d.) should be used with the 2-m reflector trough, so long as small errors and misalignments are expected.

Ratzel, A.C.

1986-01-01T23:59:59.000Z

426

Development and analysis of a linearly segmented CPC collector for industrial steam generation  

SciTech Connect (OSTI)

This study involves the design, analysis and construction of a modular, non-imaging, trough, concentrating solar collector for generation of process steam in a tropical climate. The most innovative feature of this concentrator is that the mirror surface consists of long and narrow planar segments placed inside sealed low-cost glass tubes. The absorber is a cylindrical fin inside an evacuated glass tube. As an extension of the same study, the optical efficiency of the segmented concentrator has been simulated by means of a Monte-Carlo Ray-Tracing program. Laser Ray-Tracing techniques were also used to evaluate the possibilities of this new concept. A preliminary evaluation of the experimental concentrator was done using a relatively simple method that combines results from two experimental measurements: overall heat loss coefficient and optical efficiency. A transient behaviour test was used to measure the overall heat loss coefficient throughout a wide range of temperatures.

Figueroa, J.A.A.

1980-06-01T23:59:59.000Z

427

AN EXTRACTION AND CURATION TECHNIQUE FOR PARTICLES CAPTURED IN AEROGEL COLLECTORS. A.  

E-Print Network [OSTI]

cometary, interplanetary and interstellar dust captured in aerogel collectors. The curation strategy (or strategies) for STAR-DUST remain to be defined. Here we present a technique for curation of particles captured in aerogel which will simultaneously preserve the entire particle track, and could allow for the elemental in situ analysis of both the particle residue at the terminus of the track and any particle residues located along the track. This builds on work that we have previously reported elsewhere[1]. developed a technique for extracting aerogel wedge-shaped keystones that satisfy this requirement. In Fig. 1 we show top and side views of such an extracted wedge, containing a captured particle (Fig. 2) and its track. In Fig. 3, we show the excavated pit, demonstrating that there is essentially no disturbance beyond the extraction region. Even very long

unknown authors

428

Dual Band Electrodes in Generator-Collector Mode: Simultaneous Measurement of Two Species  

E-Print Network [OSTI]

A computational model for the simulation of a double band collector-generator experiment is applied to the situation where two electrochemical reactions occur concurrently. It is shown that chronoamperometric measurements can be used to take advantage of differences in diffusion coefficients to measure the concentrations of both electroactive species simultaneously, by measuring the time at which the collection efficiency reaches a specific value. The separation of the electrodes is shown to not affect the sensitivity of the method (in terms of percentage changes in the measured time to reach the specified collection efficiency), but wider gaps can provide a greater range of (larger) absolute values of this characteristic time. It is also shown that measuring the time taken to reach smaller collection efficiencies can allow for the detection of smaller amounts of whichever species diffuses faster. The case of a system containing both ascorbic acid and opamine in water is used to exemplify the method, and it i...

Barnes, Edward O; Dale, Sara E C; Marken, Frank; Compton, Richard G

2013-01-01T23:59:59.000Z

429

Computing hitting times via fluid approximation: application to the coupon collector problem  

E-Print Network [OSTI]

In this paper, we show how to use stochastic approximation to compute hitting time of a stochastic process, based on the study of the time for a fluid approximation of this process to be at distance 1/N of its fixed point. This approach is developed to study a generalized version of the coupon collector problem. The system is composed by N independent identical Markov chains. At each time step, one Markov chain is picked at random and performs one transition. We show that the time at which all chains have hit the same state is bounded by a N log N + b N log log N + O(N) where a and b are two constants depending on eigenvalues of the Markov chain.

Gast, Nicolas

2011-01-01T23:59:59.000Z

430

Low-cost evacuated-tube solar collector appendices. Final report  

SciTech Connect (OSTI)

A low cost solar heat energy collector module and array has been designed using the evacuated tube, selective absorber, air cooled concept. Glass tubing as used in fluorescent lamps with automatic sealing methods is a key feature of the evacuated tube design. A molded fiber glass concentrating reflector panel and sheet metal header assembly are proposed. Major design problems involved included the cost of materials and labor, thermal expansion and distortion problems, high stagnation and operating temperatures, isolation, thermal efficiency, sealing, joining, air pressure drop, and weight of the preassembled module. A cost of less than $5 per active square foot of collecting surface has been estimated for materials and labor of the module and its mounting frame.

Beecher, D.T.

1980-05-31T23:59:59.000Z

431

Horizontal natural gas storage caverns and methods for producing same  

DOE Patents [OSTI]

The invention provides caverns and methods for producing caverns in bedded salt deposits for the storage of materials that are not solvents for salt. The contemplated salt deposits are of the bedded, non-domed variety, more particularly salt found in layered formations that are sufficiently thick to enable the production of commercially usefully sized caverns completely encompassed by walls of salt of the formation. In a preferred method, a first bore hole is drilled into the salt formation and a cavity for receiving insolubles is leached from the salt formation. Thereafter, at a predetermined distance away from the first bore hole, a second bore hole is drilled towards the salt formation. As this drill approaches the salt, the drill assumes a slant approach and enters the salt and drills through it in a horizontal direction until it intersects the cavity for receiving insolubles. This produces a substantially horizontal conduit from which solvent is controlledly supplied to the surrounding salt formation, leaching the salt and producing a concentrated brine which is removed through the first bore hole. Insolubles are collected in the cavity for receiving insolubles. By controlledly supplying solvent, a horizontal cavern is produced with two bore holes extending therefrom.

Russo, Anthony (Albuquerque, NM)

1995-01-01T23:59:59.000Z

432

Horizontal well improves oil recovery from polymer flood--  

SciTech Connect (OSTI)

Horizontal drilling associated with an injection scheme appears to be highly promising for obtaining additional oil recovery. Horizontal well CR 163H, in the Chateaurenard field is discussed. It demonstrated that a thin unconsolidated sand can be successfully drilled and cased. The productivity index (PI) of the well was much greater than vertical wells, and an unproduced oil bank was successfully intersected. On the negative side, it was necessary to pump low in a very deviated part of the well, and the drilling cost was high compared to an onshore vertical well. CR 163H was the fifth and probably most difficult horizontal well drilled by Elf Aquitaine. Located within a polymer-flood project, the target was a 7-m thick sand reservoir at a vertical depth of 590:0080 m. In this inverted seven-spot configuration with one injector in the center and six producers at a distance of 400 m, a polymer solution was injected from 1977 to 1983, followed by water injection.

Bruckert, L. (Elf Aquitaine, Boussens, (FR))

1989-12-18T23:59:59.000Z

433

Natural convection heat transfer within horizontal spent nuclear fuel assemblies  

SciTech Connect (OSTI)

Natural convection heat transfer is experimentally investigated in an enclosed horizontal rod bundle, which characterizes a spent nuclear fuel assembly during dry storage and/or transport conditions. The basic test section consists of a square array of sixty-four stainless steel tubular heaters enclosed within a water-cooled rectangular copper heat exchanger. The heaters are supplied with a uniform power generation per unit length while the surrounding enclosure is maintained at a uniform temperature. The test section resides within a vacuum/pressure chamber in order to subject the assembly to a range of pressure statepoints and various backfill gases. The objective of this experimental study is to obtain convection correlations which can be used in order to easily incorporate convective effects into analytical models of horizontal spent fuel systems, and also to investigate the physical nature of natural convection in enclosed horizontal rod bundles in general. The resulting data consist of: (1) measured temperatures within the assembly as a function of power, pressure, and backfill gas; (2) the relative radiative contribution for the range of observed temperatures; (3) correlations of convective Nusselt number and Rayleigh number for the rod bundle as a whole; and (4) correlations of convective Nusselt number as a function of Rayleigh number for individual rods within the array.

Canaan, R.E.

1995-12-01T23:59:59.000Z

434

Role of self-propulsion of marine larvae on their probability of contact with a protruding collector located in a sea current  

E-Print Network [OSTI]

Settlement of marine larvae on a substrate is a fundamental problem of marine life. The probability of settlement is one of the quantitative characteristic of the settlement process. The probability of larval contact with a substrate is the upper bound of the probability of settlement. This work addresses the problem of contact probability and contact rate of marine invertebrate larvae with an isolated protruding collector located in an unbounded sea current. There are two common approaches to the problem of contact probability. In one, a collector induces certain cues, which help a larvae find the collector. In such a case, the larva moves towards the collector deliberately, using its navigation and propulsion devices. In the second approach, a larva moves towards a collector as a passive small particle. In this case, the cause of contact of a larva with a collector is a mechanical collision of a small moving body with a large obstacle. We considered a larva which does not know the location of the collector,...

Zilman, Gregory; Liberzon, Alex; Perkol-Finkel, Shimrit; Benayahu, Yehuda

2011-01-01T23:59:59.000Z

435

Hydrodynamic and Structural Performance of the Transverse Horizontal Axis Water Turbine  

E-Print Network [OSTI]

power (2) · Vertical axis turbines ­ Blue Energy ­ Polo ­ ... 4 other vertical axis devices · Horizontal of Darrieus vertical axis wind turbine (VAWT) through 90 to lie horizontally across a tidal flow · StretchHydrodynamic and Structural Performance of the Transverse Horizontal Axis Water Turbine Prof. Guy

Gorban, Alexander N.

436

Computational Fluid Dynamics Modeling of the Bonneville Project: Tailrace Spill Patterns for Low Flows and Corner Collector Smolt Egress  

SciTech Connect (OSTI)

In 2003, an extension of the existing ice and trash sluiceway was added at Bonneville Powerhouse 2 (B2). This extension started at the existing corner collector for the ice and trash sluiceway adjacent to Bonneville Powerhouse 2 and the new sluiceway was extended to the downstream end of Cascade Island. The sluiceway was designed to improve juvenile salmon survival by bypassing turbine passage at B2, and placing these smolt in downstream flowing water minimizing their exposure to fish and avian predators. In this study, a previously developed computational fluid dynamics model was modified and used to characterized tailrace hydraulics and sluiceway egress conditions for low total river flows and low levels of spillway flow. STAR-CD v4.10 was used for seven scenarios of low total river flow and low spill discharges. The simulation results were specifically examined to look at tailrace hydraulics at 5 ft below the tailwater elevation, and streamlines used to compare streamline pathways for streamlines originating in the corner collector outfall and adjacent to the outfall. These streamlines indicated that for all higher spill percentage cases (25% and greater) that streamlines from the corner collector did not approach the shoreline at the downstream end of Bradford Island. For the cases with much larger spill percentages, the streamlines from the corner collector were mid-channel or closer to the Washington shore as they moved downstream. Although at 25% spill at 75 kcfs total river, the total spill volume was sufficient to "cushion" the flow from the corner collector from the Bradford Island shore, areas of recirculation were modeled in the spillway tailrace. However, at the lowest flows and spill percentages, the streamlines from the B2 corner collector pass very close to the Bradford Island shore. In addition, the very flow velocity flows and large areas of recirculation greatly increase potential predator exposure of the spillway passed smolt. If there is concern for egress issues for smolt passing through the spillway, the spill pattern and volume need to be revisited.

Rakowski, Cynthia L.; Serkowski, John A.; Richmond, Marshall C.; Perkins, William A.

2010-12-01T23:59:59.000Z

437

Application of horizontal wells in steeply dipping reservoirs  

E-Print Network [OSTI]

) + Rplj)/2 Np = Np(j-1) + DELTA Np R3 - Rs +[(kg/ko)(Uo/Ug)(Bo/Bg)] Gp = Gp 4-1) + DELTA NpsRp avg Rec. Fac. = Np/OOIP Rp=Gp/Np 43 IE+06 lE+05 a 1E+04 1E+03 ~m=000 ? a ? m=0, 08 ~m=0. 24 1965 1970 1975 1980 1985 1990 1995 Time (years) Fig... Major Subject: Petroleum Engineering ABSTRACT Application of Horizontal Wells in Steeply Dipping Reservoirs. (December 1995) Jose David Lopez Navarro, B. S. , Universidad de America Santafe de Bogota, Colombia Co-chairs of Advisory Committee: Dr...

Lopez Navarro, Jose David

1995-01-01T23:59:59.000Z

438

Design and testing of an internal mode converter for a 1.5 MW, 110 GHz gyrotron with a depressed collector  

E-Print Network [OSTI]

We report experimental results on a 1.5 MW, 110 GHz, 3 microsecond pulsed gyrotron with a single-stage depressed collector. A simplified mode converter with smooth mirror surfaces has been installed in the tube. The converter ...

Tax, David Samuel

439

Midtemperature Solar Systems Test Facility predictions for thermal performance of the Solar Kinetics T-700 solar collector with FEK 244 reflector surface  

SciTech Connect (OSTI)

Thermal performance predictions are presented for the Solar Kinetics T-700 solar collector, with FEK 244 reflector surface, for three output temperatures at five cities in the United States.

Harrison, T.D.

1980-11-01T23:59:59.000Z

440

Midtemperature solar systems test facility predictions for thermal performance based on test data. Toltec two-axis tracking solar collector with 3M acrylic polyester film reflector surface  

SciTech Connect (OSTI)

Thermal performance predictions based on test data are presented for the Toltec solar collector, with acrylic film reflector surface, for three output temperatures at five cities in the United States.

Harrison, T.D.

1981-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Midtemperature solar systems test facility predictions for thermal performance based on test data. Polisolar Model POL solar collector with glass reflector surface  

SciTech Connect (OSTI)

Thermal performance predictions based on test data are presented for the Polisolar Model POL solar collector, with glass reflector surfaces, for three output temperatures at five cities in the United States.

Harrison, T.D.

1981-05-01T23:59:59.000Z

442

Design of a silica-aerogel-based cosmic dust collector for the Tanpopo mission aboard the International Space Station  

E-Print Network [OSTI]

We are developing a silica-aerogel-based cosmic dust collector for use in the Tanpopo experiment to be conducted on the International Space Station. The mass production of simple two-layer hydrophobic aerogels was undertaken in a contamination-controlled environment, yielding more than 100 undamaged products. The collector, comprising an aerogel tile and holder panel, was designed to resist launch vibration and to conform to an exposure attachment. To this end, a box-framing aerogel with inner and outer densities of 0.01 and 0.03 g/cm$^3$, respectively, was fabricated. The aerogel mounted in the panel passed random vibration tests at the levels of the acceptance and qualification tests for launch. It also withstood the pressure changes expected in the airlock on the International Space Station.

Tabata, Makoto; Yano, Hajime; Hashimoto, Hirofumi; Kawai, Hideyuki; Kawaguchi, Yuko; Kobayashi, Kensei; Mita, Hajime; Okudaira, Kyoko; Sasaki, Satoshi; Yabuta, Hikaru; Yokobori, Shin-ichi; Yamagishi, Akihiko

2014-01-01T23:59:59.000Z

443

Interactions and Implications of a Collector Well with a River in an Unconfined Aquifer with Regional Background Flow  

E-Print Network [OSTI]

; Steward, 1999; Zhan, 1999; Zhan and Cao, 2000]. These wells are often placed near or under rivers, where they collect water from both the surface and aquifer that is naturally filtered through low permeability riverbank sediments. Seines et al. [1994... various conditions [Schafer, 1996; Zhan, 1999; Steward, 1999; Zhan and Cao, 2000; Stewart and Jin, 2001]. Radial collector wells are complex fluid collection systems that induce intricate flow dynamics as a result of their pumping because...

Dugat, William D., IV

2010-01-14T23:59:59.000Z

444

Crosswell Imaging Technology & Advanced DSR Navigation for Horizontal Directional Drilling  

SciTech Connect (OSTI)

The objective of Phase II is to develop and demonstrate real-time measurement-while-drilling (MWD) for guidance and navigation of drill strings during horizontal drilling operations applicable to both short and long holes. The end product of Phase II is a functional drill-string assembly outfitted with a commercial version of Drill String Radar (DSR). Project Objectives Develop and demonstrate a dual-phase methodology of in-seam drilling, imaging, and structure confirmation. This methodology, illustrated in Figure 1, includes: (1) Using RIM to image between drill holes for seam thickness estimates and in-seam structures detection. Completed, February 2005; and (2) Using DSR for real-time MWD guidance and navigation of drillstrings during horizontal drilling operations. Completed, November 2008. As of November 2008, the Phase II portion of Contract DE-FC26-04NT42085 is about 99% complete, including milestones and tasks original outlined as Phase II work. The one percent deficiency results from MSHA-related approvals which have yet to be granted (at the time of reporting). These approvals are pending and are do not negatively impact the scope of work or project objectives.

Larry Stolarczyk

2008-08-08T23:59:59.000Z

445

Horizontal well drill-in fluid utilizing alcohol ethoxylate  

SciTech Connect (OSTI)

The drilling of horizontal wells in the last 6 years has significantly improved the economics of oil and gas production from depleted reservoirs or tight sands. This paper illustrates the application of an alcohol ethoxylate into a drill-in fluid designed to minimize formation damage in low permeability sandstones while drilling horizontal sections as long as 1,617 meters (5,306 ft) at depths approaching 6,580 meters (21,600 ft) and to facilitate formation cleanup. The chemistry of alcohol ethoxylates/alkoxylates are described and the more popular names used within the industry will be discussed. Laboratory results are presented which illustrate colloidal phenomena not previously reported with these systems, the routes taken for successful application into a drill-in fluid and how complex these particular colloidal systems are from a physical chemical viewpoint, along with the inevitable learning curve required to fully optimize these systems. Generalized case histories from the UK Southern North Sea will be described, along with field observations which back up the colloidal phenomena seen in the laboratory.

Jachnik, R.P.; Green, P.

1995-11-01T23:59:59.000Z

446

U.S. Solar Resource Maps and Tools from the National Renewable Energy Laboratory (NREL)  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Solar maps provide monthly average daily total solar resource information on grid cells. The insolation values represent the resource available to a flat plate collector, such as a photovoltaic panel, oriented due south at an angle from horizontal to equal to the latitude of the collector location. [Copied from http://www.nrel.gov/gis/solar.html] Several types of solar maps are made available. The U.S. Solar resource maps show the resource potential for energy from photovoltaics and from concentrating solar power (CSP). Both sets of maps are available in low or high resolution. A dynamic map based on version 2 of PVWATTS calculates electrical energy performance estimates for a grid-connected photovoltaic system. The map of U.S. Solar Measurement Station Locations is also dynamic, showing the spatial distribution of measurement stations across the U.S. that are monitored by programs and agencies such as DOE's Atmospheric Radiation Measurement (ARM) Program or NREL's Cooperative Network for Renewable Resource Measurements (CONFRRM). Clicking on a station location will take the user to the website of that station. Finally, static map images providing solar resource information averaged by month are also available.

447

Experimental investigation and modeling of a direct-coupled PV/T air collector  

SciTech Connect (OSTI)

Photovoltaic/thermal (PV/T) systems refer to the integration of photovoltaic and solar thermal technologies into one single system, in that both useful heat energy and electricity are produced. The impetus of this paper is to model a direct-coupled PV/T air collector which is designed, built, and tested at a geographic location of Kerman, Iran. In this system, a thin aluminum sheet suspended at the middle of air channel is used to increase the heat exchange surface and consequently improve heat extraction from PV panels. This PV/T system is tested in natural convection and forced convection (with two, four and eight fans operating) and its unsteady results are presented in with and without glass cover cases. A theoretical model is developed and validated against experimental data, where good agreement between the measured values and those calculated by the simulation model were achieved. Comparisons are made between electrical performance of the different modes of operation, and it is concluded that there is an optimum number of fans for achieving maximum electrical efficiency. Also, results show that setting glass cover on photovoltaic panels leads to an increase in thermal efficiency and decrease in electrical efficiency of the system. (author)

Shahsavar, A.; Ameri, M. [Department of Mechanical Engineering, Faculty of Engineering, Shahid Bahonar University, Kerman (Iran, Islamic Republic of); Energy and Environmental Engineering Research Center, Shahid Bahonar University, Kerman (Iran, Islamic Republic of)

2010-11-15T23:59:59.000Z

448

Subpilot-scale testing of acoustically enhanced cyclone collectors. Final report, September 1988--September 1994  

SciTech Connect (OSTI)

Gas turbines are used to recover energy from high temperature exhaust gases in coal-fired pressurized-fluidized bed, combined-cycle power generation systems. However, prior to entering the turbine hot-section, the majority of the fly ash must be removed in order to protect the turbine components from erosion, corrosion, and deposition of the ash. The U.S. Department of Energy under the direction of the Morgantown Energy Technology Center (METC) sponsored the development of an acoustically enhanced cyclone collector which offers the potential of achieving environmental control standards under Pressurized Fluid Bed Combustors (PFBC) conditions without the need for post-turbine particulate control. Pulse combustors developed by Manufacturing and Technology Conversation International, Inc. (MTCI) produced the acoustic power necessary to agglomerate ash particles into sizes large enough to be collected in a conventional cyclone system. A hot gas cleanup system that meets both turbine protection and emissions requirements without post-turbine particulate controls would also have improved overall system economics.

Galica, M.A.; Campbell, A.H.; Rawlins, D.C.

1994-08-01T23:59:59.000Z

449

Separation Of Uranium And Plutonium Isotopes For Measurement By Multi Collector Inductively Coupled Plasma Mass Spectroscopy  

SciTech Connect (OSTI)

Uranium (U) and plutonium (Pu) isotopes in coral soils, contaminated by nuclear weapons testing in the northern Marshall Islands, were isolated by ion-exchange chromatography and analyzed by mass spectrometry. The soil samples were spiked with {sup 233}U and {sup 242}Pu tracers, dissolved in minerals acids, and U and Pu isotopes isolated and purified on commercially available ion-exchange columns. The ion-exchange technique employed a TEVA{reg_sign} column coupled to a UTEVA{reg_sign} column. U and Pu isotope fractions were then further isolated using separate elution schemes, and the purified fractions containing U and Pu isotopes analyzed sequentially using multi-collector inductively coupled plasma mass spectrometer (MCICP-MS). High precision measurements of {sup 234}U/{sup 235}U, {sup 238}U/{sup 235}U, {sup 236}U/{sup 235}U, and {sup 240}Pu/{sup 239}Pu in soil samples were attained using the described methodology and instrumentation, and provide a basis for conducting more detailed assessments of the behavior and transfer of uranium and plutonium in the environment.

Martinelli, R E; Hamilton, T F; Williams, R W; Kehl, S R

2009-03-29T23:59:59.000Z

450

High-frequency shear-horizontal surface acoustic wave sensor  

DOE Patents [OSTI]

A Love wave sensor uses a single-phase unidirectional interdigital transducer (IDT) on a piezoelectric substrate for leaky surface acoustic wave generation. The IDT design minimizes propagation losses, bulk wave interferences, provides a highly linear phase response, and eliminates the need for impedance matching. As an example, a high frequency (.about.300-400 MHz) surface acoustic wave (SAW) transducer enables efficient excitation of shear-horizontal waves on 36.degree. Y-cut lithium tantalate (LTO) giving a highly linear phase response (2.8.degree. P-P). The sensor has the ability to detect at the pg/mm.sup.2 level and can perform multi-analyte detection in real-time. The sensor can be used for rapid autonomous detection of pathogenic microorganisms and bioagents by field deployable platforms.

Branch, Darren W

2013-05-07T23:59:59.000Z

451

High-frequency shear-horizontal surface acoustic wave sensor  

SciTech Connect (OSTI)

A Love wave sensor uses a single-phase unidirectional interdigital transducer (IDT) on a piezoelectric substrate for leaky surface acoustic wave generation. The IDT design minimizes propagation losses, bulk wave interferences, provides a highly linear phase response, and eliminates the need for impedance matching. As an example, a high frequency (.about.300-400 MHz) surface acoustic wave (SAW) transducer enables efficient excitation of shear-horizontal waves on 36.degree. Y-cut lithium tantalate (LTO) giving a highly linear phase response (2.8.degree. P-P). The sensor has the ability to detect at the pg/mm.sup.2 level and can perform multi-analyte detection in real-time. The sensor can be used for rapid autonomous detection of pathogenic microorganisms and bioagents by field deployable platforms.

Branch, Darren W

2014-03-11T23:59:59.000Z

452

Gravity wave turbulence revealed by horizontal vibrations of the container  

E-Print Network [OSTI]

We experimentally study the role of the forcing on gravity-capillary wave turbulence. Previous laboratory experiments using spatially localized forcing (vibrating blades) have shown that the frequency power-law exponent of the gravity wave spectrum depends on the forcing parameters. By horizontally vibrating the whole container, we observe a spectrum exponent that does not depend on the forcing parameters for both gravity and capillary regimes. This spatially extended forcing leads to a gravity spectrum exponent in better agreement with the theory than by using a spatially localized forcing. The role of the vessel shape has been also studied. Finally, the wave spectrum is found to scale linearly with the injected power for both regimes whatever the forcing type used.

Bruno Issenmann; Eric Falcon

2012-12-20T23:59:59.000Z

453

Magnetic Flux Dynamics in Horizontally Cooled Superconducting Cavities  

E-Print Network [OSTI]

Previous studies on magnetic flux expulsion as a function of cooling details have been performed for superconducting niobium cavities with the cavity beam axis placed parallel respect to the helium cooling flow, and findings showed that for sufficient cooling thermogradients all magnetic flux could be expelled and very low residual resistance could be achieved. In this paper we investigate the flux trapping and its impact on radio frequency surface resistance when the resonators are positioned perpendicularly to the helium cooling flow, which is representative of how superconducting radio-frequency (SRF) cavities are cooled in an accelerator. We also extend the studies to different directions of applied magnetic field surrounding the resonator. Results show that in the cavity horizontal configuration there is a different impact of the various field components on the final surface resistance, and that several parameters have to be considered to understand flux dynamics. A newly discovered phenomenon of concent...

Martinello, M; Grassellino, A; Crawford, A C; Melnychuk, O; Romanenko, A; Sergatkov, D A

2015-01-01T23:59:59.000Z

454

Interphase transport in horizontal stratified cocurrent flow. [PWR; BWR  

SciTech Connect (OSTI)

The problem of interfacial transport in cocurrent, horizontal stratified gas-liquid systems is considered. Local condensation heat transfer coefficients and interface shear stress were obtained from mass and force balances. These balances were based on gas phase pitot traverses at various streamwise locations. Laser anemometer measurements of liquid mean and rms fluctuation velocities were made at similar locations. The laser anemometer data supported the value for the interface shear velocity obtained by the gas phase force balance. Based on cocurrent stratified air-water flow data the noncondensing interface shear stress was found to be a function of the relative velocity between the phases and the liquid fraction. Incorporated into Linehan's relation for condensing flow shear stress, the correlation was found to estimate the shear velocity for the condensation data considered. Local condensation heat transfer coefficients and gas absorption mass transfer coefficients were found to be directly proportional to the shear velocity.

Jensen, R.J.; Yuen, M.C.

1982-05-01T23:59:59.000Z

455

Horizontal oil well applications and oil recovery assessment. Technical progress report, April--June 1994  

SciTech Connect (OSTI)

Thousands of horizontal wells are being drilled each year in the U.S.A. and around the world. Horizontal wells have increased oil and gas production rates 3 to 8 times those of vertical wells in many areas and have converted non-economic oil reserves to economic reserves. However, the use of horizontal technology in various formation types and applications has not always yielded anticipated success. The primary objective of this project is to examine factors affecting technical and economic success of horizontal well applications. The project`s goals will be accomplished through six tasks designed to evaluate the technical and economic success of horizontal drilling, highlight current limitations, and outline technical needs to overcome these limitations. Data describing operators` experiences throughout the domestic oil and gas industry will be gathered and organized. Canadian horizontal technology will also be documented with an emphasis on lessons the US industry can learn from Canada`s experience. MEI databases containing detailed horizontal case histories will also be used. All these data will be categorized and analyzed to assess the status of horizontal well technology and estimate the impact of horizontal wells on present and future domestic oil recovery and reserves.

McDonald, W.J.

1993-06-03T23:59:59.000Z

456

Subsurface horizontal microfracture propagation within the middle member of the Bakken Formation, Williston Basin, North Dakota.  

E-Print Network [OSTI]

??The Devonian-Mississippian Bakken Formation of the Williston basin does not outcrop. All rock samples are obtained by coring. Open, uncemented, horizontal mode I (joints, with (more)

Warner, Travis Blackburn.

2011-01-01T23:59:59.000Z

457

Multi-Collector Inductively Coupled Plasma Mass Spectrometer Operational Performance Report  

SciTech Connect (OSTI)

The INL made an assessment of the commercially available inductively coupled plasma mass spectrometers (ICPMS) for actinide analysis; emphasizing low detection limits for plutonium. INL scientists subsequently determined if plutonium was present on a swipe, at a 10 million atom decision level. This report describes the evaluation of ICPMS instruments and the operational testing of a new process for the dissolution, separation and analysis via ICPMS of swipes for plutonium and uranium. The swipe dissolution, plutonium and uranium isolation, separation and purification are wet chemistry methods following established procedures. The ICPMS is a commercially available multi-collector magnetic sector mass spectrometer that utilizes five ion counting detectors operating simultaneously. The instrument includes a sample introduction system allowing for sample volumes of < 1 mL to be reproducibly injected into the instrument with minimal waste of the sample solution, while maximizing the useable signal. The performance of the instrument was measured using SRM 996 (244Pu spike) at concentrations of 12 parts per quadrillion (ppq, fg/mL) and with SRM 4350B Columbia River Sediment samples spiked onto swipes at the 10 million atom level. The measured limit of detection (LOD, defined as 3s) for 239Pu is 310,000 atoms based upon the instrument blank data. The limit of quantification (LOQ defined as 10 s) for 239Pu is 105,000 atoms. The measured limit of detection for 239Pu from the SRM 4350B spiked onto a swipe was 2.7 million atoms with the limit of quantification being 9.0 million atoms.

Matthew Watrous; Anthony Appelhans; Robert Hague; John Olson; Tracy Houghton

2013-06-01T23:59:59.000Z

458

Title COMBINATION OF THERMAL SOLAR COLLECTORS, HEAT PUMP AND THERMAL ENERGY STORAGE FOR DWELLINGS IN BELGIUM.  

E-Print Network [OSTI]

The amount of available solar energy in Belgium is more than sufficient to meet local heat demand for space heating and domestic hot water in a dwelling. However, the timing of both the availability of solar energy and the need for thermal energy, match only to a limited extent. Therefore, compact storage of the surplus of thermal energy is a critical issue. Depending on the temperature at which this energy is available, directly from the sun or indirectly through the storage, different combinations with a heat pump can be considered. By combining solar energy with a heat pump one may benefit on both sides since the fraction of solar energy increases as well as the performance of the heat pump. The aim of this thesis is to select the best out of three configurations that combine thermal solar collectors, heat pump and thermal energy storage for heating purposes in dwellings in Belgium, based on model simulations. Energetic, exergetic and economic criteria are used to evaluate the different configurations, while thermal comfort and domestic hot water tap profiles should be met. One (or more) performance index (indices) is (are) defined enabling an objective comparison between different systems. Today several systems are already commercially available on the international market [4]. Since these systems consist of different components, the system design is a crucial issue. Therefore, special attention should be paid to the sizing of the individual components, the interaction of the components within the global system, and the strategy for operational control. To study the interaction with the building, three types of buildings (already defined in a previous project) are considered.

Contact Raf; De Herdt; Roel De Coninck; Filip Van Den Schoor; Lieve Helsen

459

Zero Discharge Water Management for Horizontal Shale Gas Well Development  

SciTech Connect (OSTI)

Hydraulic fracturing technology (fracking), coupled with horizontal drilling, has facilitated exploitation of huge natural gas (gas) reserves in the Devonian-age Marcellus Shale Formation (Marcellus) of the Appalachian Basin. The most-efficient technique for stimulating Marcellus gas production involves hydraulic fracturing (injection of a water-based fluid and sand mixture) along a horizontal well bore to create a series of hydraulic fractures in the Marcellus. The hydraulic fractures free the shale-trapped gas, allowing it to flow to the well bore where it is conveyed to pipelines for transport and distribution. The hydraulic fracturing process has two significant effects on the local environment. First, water withdrawals from local sources compete with the water requirements of ecosystems, domestic and recreational users, and/or agricultural and industrial uses. Second, when the injection phase is over, 10 to 30% of the injected water returns to the surface. This water consists of flowback, which occurs between the completion of fracturing and gas production, and produced water, which occurs during gas production. Collectively referred to as returned frac water (RFW), it is highly saline with varying amounts of organic contamination. It can be disposed of, either by injection into an approved underground injection well, or treated to remove contaminants so that the water meets the requirements of either surface release or recycle use. Depending on the characteristics of the RFW and the availability of satisfactory disposal alternatives, disposal can impose serious costs to the operator. In any case, large quantities of water must be transported to and from well locations, contributing to wear and tear on local roadways that were not designed to handle the heavy loads and increased traffic. The search for a way to mitigate the situation and improve the overall efficiency of shale gas production suggested a treatment method that would allow RFW to be used as make-up water for successive fracs. RFW, however, contains dissolved salts, suspended sediment and oils that may interfere with fracking fluids and/or clog fractures. This would lead to impaired well productivity. The major technical constraints to recycling RFW involves: identification of its composition, determination of industry standards for make-up water, and development of techniques to treat RFW to acceptable levels. If large scale RFW recycling becomes feasible, the industry will realize lower transportation and disposal costs, environmental conflicts, and risks of interruption in well development schedules.

Paul Ziemkiewicz; Jennifer Hause; Raymond Lovett; David Locke Harry Johnson; Doug Patchen

2012-03-31T23:59:59.000Z

460

Station-Keeping Requirements for Constellations of Free-Flying Collectors Used for Astronomical Imaging in Space  

E-Print Network [OSTI]

The accuracy requirements on station-keeping for constellations of free-flying collectors coupled as (future) imaging arrays in space for astrophysics applications are examined. The basic imaging element of these arrays is the two-element interferometer. Accurate knowledge of two quantities is required: the \\textit{projected baseline length}, which is the distance between the two interferometer elements projected on the plane tranverse to the line of sight to the target; and the \\textit{optical path difference}, which is the difference in the distances from that transverse plane to the beam combiner. ``Rules-of-thumb'' are determined for the typical accuracy required on these parameters. The requirement on the projected baseline length is a \\textit{knowledge} requirement and depends on the angular size of the targets of interest; it is generally at a level of half a meter for typical stellar targets, decreasing to perhaps a few centimeters only for the widest attainable fields of view. The requirement on the optical path difference is a \\textit{control} requirement and is much tighter, depending on the bandwidth of the signal; it is at a level of half a wavelength for narrow (few %) signal bands, decreasing to $\\approx 0.2 \\lambda$ for the broadest bandwidths expected to be useful. Translation of these requirements into engineering requirements on station-keeping accuracy depends on the specific details of the collector constellation geometry. Several examples are provided to guide future application of the criteria presented here. Some implications for the design of such collector constellations and for the methods used to transform the information acquired into images are discussed.

Ronald J. Allen

2007-07-02T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

Evaluation of the Fish Passage Effectiveness of the Bonneville I Prototype Surface Collector using Three-Dimensional Ultrasonic Fish Tracking  

SciTech Connect (OSTI)

This report describes tests conducted at Bonneville Dam on the Columbia River in the spring of 2000 using three-dimensional acoustic telemetry and computational fluid dynamics hydraulic modeling to observe the response of outmigrating juvenile steelhead and yearling chinook to a prototype surface collector installed at the Powerhouse. The study described in this report was one of several conducted for the U.S. Army Corps of Engineers to prepare a decision document on which of two bypass methods: surface flow bypass or extended-length submersible bar screens to use to help smolts pass around Bonneville dams without going through the turbines.

Faber, Derrek M.; Weiland, Mark A.; Moursund, Robert; Carlson, Thomas J.; Adams, Noah; Rhondorf, D.

2001-05-01T23:59:59.000Z

462

A Parametric Study on the Benefits of Drilling Multilateral and Horizontal Wells in  

E-Print Network [OSTI]

A Parametric Study on the Benefits of Drilling Multilateral and Horizontal Wells in Coalbed Methane reservoirs can be drained with horizontal well configurations. - In a very short time, coal system can, Texas SPE Paper # 96018 #12;- Coal is an unusual reservoir rock, with highly complex reservoir

Mohaghegh, Shahab

463

Near wake properties of horizontal axis marine current L. Myers and A.S. Bahaj  

E-Print Network [OSTI]

1 Near wake properties of horizontal axis marine current turbines L. Myers and A.S. Bahaj wake region of a tidal current turbine is strongly driven by the combined wake of the device support-scale horizontal axis turbine has been have been measured in a large water channel facility. A downstream map

Quartly, Graham

464

LQG control of horizontal wind turbines for blades and tower loads alleviation  

E-Print Network [OSTI]

LQG control of horizontal wind turbines for blades and tower loads alleviation A. Pintea*, N of power produced by two bladed horizontal variable speed wind turbines. The proposed controller ensures oscillations and with the tower bending tendency. Keywords: LQG control, Wind turbines, Multi-objective control

Paris-Sud XI, Université de

465

Experimental study of hydraulic transport of large particles in horizontal and S-shape pipes  

E-Print Network [OSTI]

Experimental study of hydraulic transport of large particles in horizontal and S-shape pipes F and solid mixture that flows in a horizontal pipe and in a vertical S-shaped pipe. Two densities are used for the solids. The solids are spheres that are large with respect to the diameter of the pipe (5, 10 and 15

Paris-Sud XI, Université de

466

Impact of horizontal groundwater flow and localized deforestation on the development of shallow  

E-Print Network [OSTI]

Impact of horizontal groundwater flow and localized deforestation on the development of shallow that develop in the shallow subsurface as a result of localized deforestation in combination with shallow horizontal groundwater flow. Model results show how a patch-wise pattern of deforestation at the surface

Bense, Victor

467

Hydraulics of horizontal wells in fractured shallow aquifer systems Eungyu Parka,*, Hongbin Zhanb  

E-Print Network [OSTI]

Hydraulics of horizontal wells in fractured shallow aquifer systems Eungyu Parka,*, Hongbin Zhanb Accepted 1 May 2003 Abstract An analysis of groundwater hydraulic head in the vicinity of a horizontal well in fractured or porous aquifers considering confined, leaky confined, and water-table aquifer boundary

Zhan, Hongbin

468

A practical modification of horizontal line sampling for snag and cavity tree inventory  

E-Print Network [OSTI]

A practical modification of horizontal line sampling for snag and cavity tree inventory M.J. Ducey features in forests, but they are often sparsely distributed, making efficient inventories problematic. We present a straightforward modification of horizontal line sampling de- signed to facilitate inventory

469

Horizontal subduction and truncation of the Cocos Plate beneath central Mexico  

E-Print Network [OSTI]

Horizontal subduction and truncation of the Cocos Plate beneath central Mexico Xyoli Pe from a trans-Mexico temporary broadband seismic network centered on Mexico City, we report that the subducting Cocos Plate beneath central Mexico is horizontal, and tectonically underplates the base

Clayton, Robert W.

470

Horizontal oil well applications and oil recovery assessment. Technical progress report, January--March 1994  

SciTech Connect (OSTI)

The primary objective of this project is to examine factors affecting technical and economic success of horizontal well applications. The project`s goals will be accomplished through five tasks designed to evaluate the technical and economic success of horizontal drilling, highlight current limitations, and outline technical needs to overcome these limitations. Data describing operators` experiences throughout the domestic oil and gas industry will be gathered and organized. MEI databases containing detailed horizontal case histories will also be used. All these data will be categorized and analyzed to assess the status of horizontal well technology and estimate the impact of horizontal wells on present and future domestic oil recovery and reserves. Accomplishments for this quarter are presented.

McDonald, W.J.

1994-06-01T23:59:59.000Z

471

Horizontal oil well applications and oil recovery assessment. Volume 2: Applications overview, Final report  

SciTech Connect (OSTI)

Horizontal technology has been applied in over 110 formations in the USA. Volume 1 of this study addresses the overall success of horizontal technology, especially in less-publicized formations, i.e., other than the Austin Chalk, Bakken, and Niobrara. Operators in the USA and Canada were surveyed on a formation-by-formation basis by means of a questionnaire. Response data were received describing horizontal well projects in 58 formations in the USA and 88 in Canada. Operators` responses were analyzed for trends in technical and economic success based on lithology (clastics and carbonates) and resource type (light oil, heavy oil, and gas). The potential impact of horizontal technology on reserves was also estimated. A forecast of horizontal drilling activity over the next decade was developed.

Deskins, W.G.; McDonald, W.J.; Knoll, R.G.; Springer, S.J.

1995-03-01T23:59:59.000Z

472

Horizontal well will be employed in hydraulic fracturing research  

SciTech Connect (OSTI)

This paper reports on 10-well research site, planned to enable more controlled experiments for better definition of hydraulic fracturing. One of the 10 wells will be a near-horizontal well that will monitor microseismic events along its length. The Gas Research Institute (GR) has begun evaluating a low-permeability, gas-bearing sandstone as the target stratum for experiments to be conducted at its hydraulic fracture test site (HFTS). During a 4-year period, GRI will use the HFTS as a field laboratory to conduct multi-disciplinary research projects to assess the mechanics of hydraulic fracturing. As a result of a screening process the Davis sandstone in the Ft. Worth basin has emerged as the tight gas sand which best fits the selected criteria established by GRI and its contractors, GRI says. The Ft. Worth basin is located approximately 50 miles northwest of Ft. Worth. GRI is planning a research well to fully characterize the Davis prior to making a final decision on the location of the HFTS. If data from the research well indicate the Davis sand does not adequately meet selection criteria, other candidates identified in the screening process will be investigated.

Not Available

1991-05-20T23:59:59.000Z

473

Atmospheric Climate Model Experiments Performed at Multiple Horizontal Resolutions  

SciTech Connect (OSTI)

This report documents salient features of version 3.3 of the Community Atmosphere Model (CAM3.3) and of three climate simulations in which the resolution of its latitude-longitude grid was systematically increased. For all these simulations of global atmospheric climate during the period 1980-1999, observed monthly ocean surface temperatures and sea ice extents were prescribed according to standard Atmospheric Model Intercomparison Project (AMIP) values. These CAM3.3 resolution experiments served as control runs for subsequent simulations of the climatic effects of agricultural irrigation, the focus of a Laboratory Directed Research and Development (LDRD) project. The CAM3.3 model was able to replicate basic features of the historical climate, although biases in a number of atmospheric variables were evident. Increasing horizontal resolution also generally failed to ameliorate the large-scale errors in most of the climate variables that could be compared with observations. A notable exception was the simulation of precipitation, which incrementally improved with increasing resolution, especially in regions where orography plays a central role in determining the local hydroclimate.

Phillips, T; Bala, G; Gleckler, P; Lobell, D; Mirin, A; Maxwell, R; Rotman, D

2007-12-21T23:59:59.000Z

474

Global horizontal irradiance clear sky models : implementation and analysis.  

SciTech Connect (OSTI)

Clear sky models estimate the terrestrial solar radiation under a cloudless sky as a function of the solar elevation angle, site altitude, aerosol concentration, water vapor, and various atmospheric conditions. This report provides an overview of a number of global horizontal irradiance (GHI) clear sky models from very simple to complex. Validation of clear-sky models requires comparison of model results to measured irradiance during clear-sky periods. To facilitate validation, we present a new algorithm for automatically identifying clear-sky periods in a time series of GHI measurements. We evaluate the performance of selected clear-sky models using measured data from 30 different sites, totaling about 300 site-years of data. We analyze the variation of these errors across time and location. In terms of error averaged over all locations and times, we found that complex models that correctly account for all the atmospheric parameters are slightly more accurate than other models, but, primarily at low elevations, comparable accuracy can be obtained from some simpler models. However, simpler models often exhibit errors that vary with time of day and season, whereas the errors for complex models vary less over time.

Stein, Joshua S.; Hansen, Clifford W.; Reno, Matthew J.

2012-03-01T23:59:59.000Z

475

Enhanced boiling heat transfer in horizontal test bundles  

SciTech Connect (OSTI)

Two-phase flow boiling from bundles of horizontal tubes with smooth and enhanced surfaces has been investigated. Experiments were conducted in pure refrigerant R-113, pure R-11, and mixtures of R-11 and R-113 of approximately 25, 50, and 75% of R-113 by mass. Tests were conducted in two staggered tube bundles consisting of fifteen rows and five columns laid out in equilateral triangular arrays with pitch-to-diameter ratios of 1.17 and 1.5. The enhanced surfaces tested included a knurled surface (Wolverine`s Turbo-B) and a porous surface (Linde`s High Flux). Pool boiling tests were conducted for each surface so that reference values of the heat transfer coefficient could be obtained. Boiling heat transfer experiments in the tube bundles were conducted at pressures of 2 and 6 bar, heat flux values from 5 to 80 kW/m{sup 2}s, and qualities from 0% to 80%, Values of the heat transfer coefficients for the enhanced surfaces were significantly larger than for the smooth tubes and were comparable to the values obtained in pool boiling. It was found that the performance of the enhanced tubes could be predicted using the pool boiling results. The degradation in the smooth tube heat transfer coefficients obtained in fluid mixtures was found to depend on the difference between the molar concentration in the liquid and vapor.

Trewin, R.R.; Jensen, M.K.; Bergles, A.E.

1994-08-01T23:59:59.000Z

476

Steam generation in line-focus solar collectors: a comparative assessment of thermal performance, operating stability, and cost issues  

SciTech Connect (OSTI)

The engineering and system benefits of using direct steam (in situ) generation in line-focus collectors are assessed. The major emphasis of the analysis is a detailed thermal performance comparison of in situ systems (which utilize unfired boilers). The analysis model developed for this study is discussed in detail. An analysis of potential flow stability problems is also provided along with a cursory cost analysis and an assessment of freeze protection, safety, and control issues. Results indicated a significant thermal performance advantage over the more conventional oil and flash systems and the flow stability does not appear to be a significant problem. In particular, at steam temperatures of 220/sup 0/C (430/sup 0/F) under the chosen set of assumptions, annual delivered energy predictions indicate that the in situ system can deliver 15% more energy than an oil system and 12% more energy than a flash system, with all of the systems using the same collector field. Further, the in situ system may result in a 10% capital cost reduction. Other advantages include improvement in simpler control when compared with flash systems, and fluid handling and safety enhancement when compared with oil systems.

Murphy, L.M.; May, E.K.

1982-04-01T23:59:59.000Z

477

Particle seeding flow system for horizontal shock tube  

SciTech Connect (OSTI)

The Extreme Fluids Team in P-23, Physics Division, studies fluid dynamics at high speeds using high resolution diagnostics. The unsteady forces on a particle driven by a shock wave are not well understood, and they are difficult to model. A horizontal shock tube (HST) is being modified to collect data about the behavior of particles accelerated by shocks. The HST has been used previously for studies of Richtmyer-Meshkov instability using Planar Laser-Induced Fluorescence (PLIF) as well as Particle Image Velocimetry (PIV), diagnostics that measure density and velocity. The purpose of our project is to design a flow system that will introduce particles into the HST. The requirements for this particle flow system (PFS) are that it be non-intrusive, be able to introduce either solid or liquid particles, have an exhaust capability, not interfere with existing diagnostics, and couple with the existing HST components. In addition, the particles must flow through the tube in a uniform way. We met these design criteria by first drawing the existing shock tube and diagnostics and doing an initial design of the ducts for the PFS. We then estimated the losses through the particle flow system from friction and researched possible fans that could be used to drive the particles. Finally, the most challenging component of the design was the coupling to the HST. If we used large inlets, the shock would lose strength as it passed by the inlet, so we designed a novel coupling inlet and outlet that minimize the losses to the shock wave. Our design was reviewed by the Extreme Fluids Team, and it is now being manufactured and built based upon our technical drawings.

Johnston, Stephen [Los Alamos National Laboratory; Garcia, Nicolas J. [Los Alamos National Laboratory; Martinez, Adam A. [Los Alamos National Laboratory; Orlicz, Gregory C. [Los Alamos National Laboratory; Prestridge, Katherine P. [Los Alamos National Laboratory

2012-08-01T23:59:59.000Z

478

Ruiz-Ponte, C., Cilia, V., Lambert, C., Nicolas, J.L., 1998. Roseobacter gallaeciensis sp. nov., a new marine bacterium isolated from rearings and collectors of the scallop Pecten maximus. International Journal of Systematic Bacteriology 48 Pt 2, 537-542.  

E-Print Network [OSTI]

., a new marine bacterium isolated from rearings and collectors of the scallop Pecten maximus marine bacterium isolated from rearings and collectors of the scallop Pecten maximus. C. Ruiz-Ponte1 , V were isolated from larval cultures and collectors of the scallop Pecten maximus. They showed a high

Paris-Sud XI, Universit de

479

The DC field components of horizontal and vertical electric dipole sources immersed in three-layered stratified media  

E-Print Network [OSTI]

for the solution in the case of horizontal electric dipole (HED) radiation source and the single-component HertzThe DC field components of horizontal and vertical electric dipole sources immersed in three- ponents of the static (DC) fields of horizontal electric dipoles ( HEDs) and vertical electric dipoles

Boyer, Edmond

480

Investigation Of The Friction Factor Behavior for Flat Plate Tests Of Smooth And Roughened Surfaces With Supply Pressures Up To 84 Bars  

E-Print Network [OSTI]

friction factor data and measure dynamic pressure oscillations. A detailed description of the test facility is described, and a theory for determining the friction factor is reviewed. Three clearances were investigated: 0.635, 0.381, and 0.254 mm. Tests...

Kheireddin, Bassem A.

2010-10-12T23:59:59.000Z

Note: This page contains sample records for the topic "horizontal flat-plate collectors" 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

The effect of injection hole orientation on flat-plate film cooling and heat transfer using a transient liquid crystal technique  

E-Print Network [OSTI]

-UP. . . . . EXPERIMENTAL PROCEDURE THEORY OF OPERATION. . . RESULTS AND DISCUSSION. . Heat transfer. . Local Spanwise Variations. . Effect of Density Ratio and Compound Angle. . . . Momentuin Flux Ratio. Film Effectiveness. . . . . . Local Spanwise Variations... cavity for mixing and ejecta through the holes onto the test plate. Temperature controllers for the mainstream and coolant flows allow for desired temperature levels to be reached and inaintained. The coolant temperature is monitored at an injection...

Zapata, Dyrk Oliver

2012-06-07T23:59:59.000Z

482

Proceedings of the flat-plate solar array project workshop on low-cost polysilicon for terrestrial photovoltaic solar-cell applications  

SciTech Connect (OSTI)

Separate abstracts were prepared for 21 papers in this workshop proceedings. Topics covered include: polysilicon material requirements; economics; process developments in the USA and internationally; and the polysilicon market and forecasts. (LEW)

Not Available

1986-02-01T23:59:59.000Z

483

Comparison of day and night vehicular speeds on horizontal curves on rural two-lane highways  

E-Print Network [OSTI]

the magnitude of the difference between daytime and nighttime speeds is small for all degrees of curvature, a variable accounting for light condition is not needed for operating-speedbased profile modeling for horizontal alignment design consistency evaluation....

Guzman, Jesus

1996-01-01T23:59:59.000Z

484

Temperature Prediction Model for Horizontal Well with Multiple Fractures in Shale Reservoir  

E-Print Network [OSTI]

Fracture diagnostics is a key technology for well performance prediction of a horizontal well in a shale reservoir. The combination of multiple fracture diagnostic techniques gives reliable results, and temperature data has potential to provide more...

Yoshida, Nozomu

2013-04-12T23:59:59.000Z

485

Interpreting Horizontal Well Flow Profiles and Optimizing Well Performance by Downhole Temperature and Pressure Data  

E-Print Network [OSTI]

be used to obtain downhole flow conditions, which is key information to control and optimize horizontal well production. However, the fluid flow in the reservoir is often multiphase and complex, which makes temperature and pressure interpretation very...

Li, Zhuoyi

2011-02-22T23:59:59.000Z

486

Heat transfer during film condensation of potassium vapor on a horizontal plate  

E-Print Network [OSTI]

The object of the investigation is to analyze the following two features of heat transfer during condensation of potassium vapor: a. Heat transfer during film condensation of a pure saturated potassium vapor on a horizontal ...

Meyrial, Paul M.

1968-01-01T23:59:59.000Z

487

PREDICTION OF CUTTINGS BED HEIGHT WITH COMPUTATIONAL FLUID DYNAMICS IN DRILLING HORIZONTAL AND HIGHLY DEVIATED WELLS  

E-Print Network [OSTI]

PREDICTION OF CUTTINGS BED HEIGHT WITH COMPUTATIONAL FLUID DYNAMICS IN DRILLING HORIZONTAL parameters such as wellbore geometry, pump rate, drilling fluid rheology and density, and maximum drilling Computational Fluid Dynamics methods. Movement, concentration and accumulation of drilled cuttings in non

Ullmer, Brygg

488

The Effect of Whole Body Horizontal Vibration in Position Sense and Dynamic Stability of the Spine  

E-Print Network [OSTI]

at the 5 Hz frequency. These results would suggest that horizontal vibration may be less of a factor in whole-body vibration induced injuries. This work was supported by University of Kansas Transportation Research Institute Grant Program....

Lamis, Farhana

2008-06-09T23:59:59.000Z

489

Growth and Transfer of Monolithic Horizontal ZnO Nanowire Superstructures onto Flexible Substrates  

E-Print Network [OSTI]

, and electromechanical nanodevices, such as UV lasers,[2] light-emitting diodes,[3,4] field- emission devices,[5] solar of the NWs. Furthermore, by encapsulating the NW arrays with a polymer thin film, the horizontal NW arrays

Wang, Zhong L.

490

The impact of long-distance horizontal gene transfer on prokaryotic genome size  

E-Print Network [OSTI]

Horizontal gene transfer (HGT) is one of the most dominant forces molding prokaryotic gene repertoires. These repertoires can be as small as ?200 genes in intracellular organisms or as large as ?9,000 genes in large, ...

Cordero Sanchez, Otto Xavier

491

Horizontal Inequity and Vertical Redistribution with Indirect Taxes: the Greek Case  

E-Print Network [OSTI]

license issue fee and an initial registration tax, varying according to the vehicles engine power and technology. Cars are also subject to an annual transport due, also varying according to engine power. Stamp duties are levied on a large number... preferences, while improvements in vertical redistribution can be achieved, albeit at the cost of increased horizontal inequity. Keywords: distributional effect of taxes, horizontal inequality, vertical redistribution, indirect tax reform, Greece JEL...

Kaplanoglou, G; Newbery, David

492

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

E-Print Network [OSTI]

EVALUATION OF A SLOTTED ORIFICE PLATE FLOW METER USING HORIZONTAL TWO PHASE FLOW A Thesis by ANITA ELENA FLORES Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree... 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...

Flores, Anita Elena

2000-01-01T23:59:59.000Z

493

An experimental study of horizontal barrier formation and containment of NAPLs by gelling liquids  

E-Print Network [OSTI]

[1990], much of the research on this topic can be found only in copies of company reports. Aul and Cervtk [1979] developed a method for grouting horizontal drainage holes in coalbeds. Karol [1990] noted that there has been a growing acceptance... grout for plugging horizontal methane-drainage holes. Lowther and Gabr [1997] experimented with urethane, a different grout, for the formation of hydraulic barriers. Voss et al. [1994] and May et al. [1986] studied chemical grouts for constructing...

Durmusoglu, Ertan

2012-06-07T23:59:59.000Z

494

The drilling of a horizontal well in a mature oil field  

SciTech Connect (OSTI)

This report documents the drilling of a medium radius horizontal well in the Bartlesville Sand of the Flatrock Field, Osage County, Oklahoma by Rougeot Oil and Gas Corporation (Rougeot) of Sperry, Oklahoma. The report includes the rationale for selecting the particular site, the details of drilling the well, the production response, conclusions reached, and recommendations made for the future drilling of horizontal wells. 11 figs., 2 tabs.

Rougeot, J.E.; Lauterbach, K.A.

1991-01-01T23:59:59.000Z

495

Relationship between design speed and operating speed at horizontal curves on suburban arterials  

E-Print Network [OSTI]

RELATIONSHIP BETWEEN DESIGN SPEED AND OPERATING SPEED AT HORIZONTAL CURVES ON SUBURBAN ARTERIALS A Thesis by CARL BRIAN SHAMBURGER Submitted to the OIIice of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1995 Major Subject: Civil Engineering RELATIONSHIP BETWEEN DESIGN SPEED AND OPERATING SPEED AT HORIZONTAL CURVES ON SUBURBAN ARTERIALS A Thesis by CARL BRIAN SHAMBURGER Submitted to Texas A&M University...

Shamburger, Carl Brian

2012-06-07T23:59:59.000Z

496

Application and Continued Development of Thin Faraday Collectors as a Lost Ion Diagnostic for Tokamak Fusion Plasmas  

SciTech Connect (OSTI)

This report summarizes the accomplishment of sixteen years of work toward the development of thin foil Faraday collectors as a lost energetic ion diagnostic for high temperature magnetic confinement fusion plasmas. Following initial, proof of principle accelerator based studies, devices have been tested on TFTR, NSTX, ALCATOR, DIII-D, and JET (KA-1 and KA-2). The reference numbers refer to the attached list of publications. The JET diagnostic KA-2 continues in operation and hopefully will provide valuable diagnostic information during a possible d-t campaign on JET in the coming years. A thin Faraday foil spectrometer, by virtue of its radiation hardness, may likewise provide a solution to the very challenging problem of lost alpha particle measurements on ITER and other future burning plasma machines.

F. Ed Cecil

2011-06-30T23:59:59.000Z

497

Theoretical analysis of error transfer from surface slope to refractive ray and their application to the solar concentrated collector  

E-Print Network [OSTI]

This paper presents the general equation to calculate the standard deviation of reflected ray error from optical error through geometry optics, applying the equation to calculate the standard deviation of reflected ray error for 8 kinds of solar concentrated reflector, provide typical results. The results indicate that the slope errors in two direction is transferred to any one direction of the focus ray when the incidence angle is more than 0 for solar trough and heliostats reflector; for point focus Fresnel lens, point focus parabolic glass mirror, line focus parabolic galss mirror, the error transferring coefficient from optical to focus ray will increase when the rim angle increase; for TIR-R concentrator, it will decrease; for glass heliostat, it relates to the incidence angle and azimuth of the reflecting point. Keywords: optic error, standard deviation, refractive ray error, concentrated solar collector

Huang, Weidong

2011-01-01T23:59:59.000Z

498

Theoretical analysis of reflected ray error from surface slope error and their application to the solar concentrated collector  

E-Print Network [OSTI]

Surface slope error of concentrator is one of the main factors to influence the performance of the solar concentrated collectors which cause deviation of reflected ray and reduce the intercepted radiation. This paper presents the general equation to calculate the standard deviation of reflected ray error from slope error through geometry optics, applying the equation to calculate the standard deviation of reflected ray error for 5 kinds of solar concentrated reflector, provide typical results. The results indicate that the slope error is transferred to the reflected ray in more than 2 folds when the incidence angle is more than 0. The equation for reflected ray error is generally fit for all reflection surfaces, and can also be applied to control the error in designing an abaxial optical system.

Huang, Weidong

2011-01-01T23:59:59.000Z

499

Condensation of Refrigerant-11 on the outside of horizontal and inclined enhanced tubes  

SciTech Connect (OSTI)

Heat transfer condensation tests with Refrigerant-11 were performed on the outside of a smooth tube and a variety of enhanced tubes oriented horizontally and at various tube inclinations. One smooth tube and seven enhanced (externally fluted, roped, spiraled, and externally finned) tubes of 2.54-cm (1-in.) nominal outside diameter and 1.17-m (4-ft) length were tested. Several of the tested tubes featured internal enhanced geometries, which were caused by the heat transfer enhancing geometry on the tube's external surface. Condensing heat transfer coefficients are reported as composite coefficients, which combine the resistance of the condensing film and the tube wall, and are based on total tube outside surface area. Results show that in the horizontal condensing mode, the rank order (best to worst) of the tube geometries tested was spiral-shaped tubes, rope-shaped tubes, smooth tube, externally finned tube, and externally fluted tube. For a spiral-shaped tube, horizontal composite coefficients were up to 2.0 times the corresponding horizontal smooth tube values. For tilt angles greater than or equal to 60/sup 0/ from the horizontal, the condensing performance of the externally fluted tube was best of all the tubes tested.

Domingo, N.

1982-12-01T23:59:59.000Z

500

Solar load ratio method applied to commercial building active solar system sizing  

SciTech Connect (OSTI)

The hourly simulation procedure is the DOE-2 building energy analysis computer program. It is capable of calculating the loads and of simulating various control strategies in detail for both residential and commercial buildings and yet is computationally efficient enough to be used for extensive parametric studies. In addition, to a Building Service Hot Water (BSHW) System and a combined space heating and hot water system using liquid collectors for a commercial building analyzed previously, a space heating system using an air collector is analyzed. A series of runs is made for systems using evacuated tube collectors for comparison to flat-plate collectors, and the effects of additional system design parameters are investigated. Also, the generic collector types are characterized by standard efficiency curves, rather than by detailed collector specifications. (MHR)

Schnurr, N.M.; Hunn, B.D.; Williamson, K.D. III

1981-01-01T23:59:59.000Z