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Note: This page contains sample records for the topic "tower modifications changing" 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

Windmill tower  

SciTech Connect (OSTI)

A windmill tower supports a propeller and a platform that in turn supports a propeller feather control system and a generator system. The entire tower rotates at its base under changes in wind direction so the rotating propeller is constantly maintained upwind of the tower. The tower is a rigid structure that withstands cyclic thrust and torque loading sufficiently to reduce resonant vibrations of the tower as the propeller rotates under the influence of the wind. The resonant frequency of the tower can be higher than the passing frequency of the rotating propeller blades. The tower includes a pair of generally upright fore legs that converge upwardly toward a first apex on the propeller axis of rotation near the front of the platform immediately behind the propeller hub. A diagonal bracing strut extends downwardly from the first apex away from the plane of the fore legs and toward the rear of the tower. The bottoms of the fore legs and the diagonal bracing strut are rigidly interconnected by base plane truss members. A pair of upwardly converging aft legs extend diagonally upwardly from the bottoms of the fore legs toward a second apex aft of the first apex at the rear of the platform. At regular vertical intervals, stiffening trusses add rigidity to the main upright members of the tower structure. The natural frequency of the tower is raised by the fore legs and the diagonal bracing strut being interconnected in a rigid base plane truss. The diagonal bracing strut resists thrust loading on the tower, and the fore legs and aft legs resist torsional forces produced at the top of the tower.

Schachle, C.; Schachle, E.C.; Schachle, J.R.; Schachle, P.J.

1982-04-06T23:59:59.000Z

2

Convection towers  

DOE Patents [OSTI]

Convection towers which are capable of cleaning the pollution from large quantities of air, of generating electricity, and of producing fresh water utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity, and condensers produce fresh water.

Prueitt, Melvin L. (Los Alamos, NM)

1996-01-01T23:59:59.000Z

3

Convection towers  

DOE Patents [OSTI]

Convection towers which are capable of cleaning the pollution from large quantities of air, of generating electricity, and of producing fresh water utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity, and condensers produce fresh water.

Prueitt, Melvin L. (Los Alamos, NM)

1995-01-01T23:59:59.000Z

4

Convection towers  

DOE Patents [OSTI]

Convection towers which are capable of cleaning the pollution from large quantities of air, of generating electricity, and of producing fresh water utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity, and condensers produce fresh water. 6 figs.

Prueitt, M.L.

1996-01-16T23:59:59.000Z

5

Convection towers  

DOE Patents [OSTI]

Convection towers which are capable of cleaning the pollution from large quantities of air and of generating electricity utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity. Other embodiments may also provide fresh water, and operate in an updraft mode.

Prueitt, Melvin L. (Los Alamos, NM)

1994-01-01T23:59:59.000Z

6

Convection towers  

DOE Patents [OSTI]

Convection towers which are capable of cleaning the pollution from large quantities of air and of generating electricity utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity. Other embodiments may also provide fresh water, and operate in an updraft mode. 5 figures.

Prueitt, M.L.

1994-02-08T23:59:59.000Z

7

Untapped Energy Savings from Cooling Towers  

E-Print Network [OSTI]

flow changes the tower?s performance also by about 1%. Internal Influences So, where can easy improvements be found? One of the easiest is balancing the water distribution systems from one cell to the next. Balancing a crossflow tower means... making sure each of the distribution basins has the same water height. Figure 2 shows two adjacent basins where the closer basin height is about 7? lower than the farther basin height. We balanced basins on a 7 cell crossflow tower that had basins...

Phelps Jr., P.

2011-01-01T23:59:59.000Z

8

Vice President CEO, Tower Foundation  

E-Print Network [OSTI]

Vice President CEO, Tower Foundation Administrative Assistant to the AVP Information Representative Tower Foundation Charitable Gifts Officer Gift Analyst Gift Analyst Gift Analyst Senior Analyst Tower Foundation Stewardship Director Graphic Designer Administrative Assistant Web Communications

Su, Xiao

9

Cooling Towers- Energy Conservation Strategies Understanding Cooling Towers  

E-Print Network [OSTI]

Cooling towers are energy conservation devices that Management, more often than not, historically overlooks in the survey of strategies for plant operating efficiencies. The utilization of the colder water off the cooling tower is the money maker!...

Smith, M.

10

Power Tower | Department of Energy  

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

50 MW of power from CSP power towers are installed in the United States, Spain, and Germany. The SunShot Initiative funds (R&D) on power tower systems and related aspects within...

11

Dynamic response of guyed towers  

E-Print Network [OSTI]

guyed towers. A parametric study was conducted using eigen analysis to determine the effects of consistent mass, geometric stiffness and P-Delta gravity loads. Time domain solutions were obtained by direct integration for motion due to regular Stokes... guyed tower 2 References to guyed tower dynamic analysis 4 Effect of mass formulation on tower natural periods. 5 P-Delta effect on fundamental period. 6 Effect of axial compression on the 1st & 2nd mode. 7 Geometric stiffness effect on natural...

Gillcrist, Mark Christopher

2012-06-07T23:59:59.000Z

12

Windmill tower shadow eliminator  

SciTech Connect (OSTI)

In a wind driven propeller system an airfoil support for the shaft of a propeller having an even number of blades extends above and below the shaft a distance at least equal to the blade length and pivots with the propeller into the wind for substantially eliminating tower shadow effects on the propeller.

Randolph, A.J.

1984-04-17T23:59:59.000Z

13

Pueblo Towers | Open Energy Information  

Open Energy Info (EERE)

Towers Towers Jump to: navigation, search Name Pueblo Towers Facility Pueblo Towers Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Vestas Towers Developer Vestas Towers Energy Purchaser Vestas Towers Location CO Coordinates 38.205834°, -104.588141° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.205834,"lon":-104.588141,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

14

TOWER-TRACKING HELIOSTAT ARRAY.  

E-Print Network [OSTI]

?? This thesis presents a method of tracking and correcting for the swaying of a central receiver tower in concentrated solar production plants. The method (more)

Masters, Joel T

2011-01-01T23:59:59.000Z

15

Sandia National Laboratories: Solar Tower  

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

Solar Thermal Test Facility * NSTTF * Renewable Energy * SAND2012-8086W * solar * Solar Energy * solar power * Solar Research * Solar Tower Comments are closed. Renewable...

16

Cooling Towers Make Money  

E-Print Network [OSTI]

was hired and wrote specifications for a four cell induced draft counterflow cooling tower to cool 10,000 GPM entering at 95 0 F leaving at 85 0 F during an 80 0 F ambient wet bulb temperature. The specifications required that the bidders project a... F during an ambient wet bulb temperature of 7] OF could not be met The SuperCellular film fill, style] 3] 62 Illustration 3 was selected by the consultant because of its previous highly satisfactory service in sewage treatment trickling filter...

Burger, R.

17

FLORIDA TOWER FOOTPRINT EXPERIMENTS  

SciTech Connect (OSTI)

The Florida Footprint experiments were a series of field programs in which perfluorocarbon tracers were released in different configurations centered on a flux tower to generate a data set that can be used to test transport and dispersion models. These models are used to determine the sources of the CO{sub 2} that cause the fluxes measured at eddy covariance towers. Experiments were conducted in a managed slash pine forest, 10 km northeast of Gainesville, Florida, in 2002, 2004, and 2006 and in atmospheric conditions that ranged from well mixed, to very stable, including the transition period between convective conditions at midday to stable conditions after sun set. There were a total of 15 experiments. The characteristics of the PFTs, details of sampling and analysis methods, quality control measures, and analytical statistics including confidence limits are presented. Details of the field programs including tracer release rates, tracer source configurations, and configuration of the samplers are discussed. The result of this experiment is a high quality, well documented tracer and meteorological data set that can be used to improve and validate canopy dispersion models.

WATSON,T.B.; DIETZ, R.N.; WILKE, R.; HENDREY, G.; LEWIN, K.; NAGY, J.; LECLERC, M.

2007-01-01T23:59:59.000Z

18

Best Management Practice #10: Cooling Tower Management  

Broader source: Energy.gov [DOE]

Cooling towers regulate temperature by dissipating heat from recirculating water used to cool chillers, air-conditioning equipment, or other process equipment. Heat is rejected from the tower...

19

Improving Process Cooling Tower Eddiciency  

E-Print Network [OSTI]

of the Thrity-Fifth Industrial Energy Technology Conference New Orleans, LA. May 21-24, 2013 7 Improving Cooling Tower Efficiency ? Two Improvements in Capacity/Performance 1. Filtration for water quality control Side stream filtration Make up water quality...-Fifth Industrial Energy Technology Conference New Orleans, LA. May 21-24, 2013 2 Types of Cooling Towers Forced Draft Towers ESL-IE-13-05-08 Proceedings of the Thrity-Fifth Industrial Energy Technology Conference New Orleans, LA. May 21-24, 2013 3 Types...

Turpish, W.

2013-01-01T23:59:59.000Z

20

Contract DE-AC02-07CH11358 Modifications Language Changes  

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

Part III - Section J, Attachment J.3 - Appendix C, Special Financial Institution Account Agreement Changed reference from old contract (W-7405-ENG-82) to new contract...

Note: This page contains sample records for the topic "tower modifications changing" 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

Cooling Tower Inspection with Scuba  

E-Print Network [OSTI]

A serious problem of scale and other solid material settling in heat transfer equipment was threatening to shut down our ethylene plant. All evidence pointed to the cooling tower as the source of the contamination. Visual inspection of the cooling...

Brenner, W.

1982-01-01T23:59:59.000Z

22

Towers for Offshore Wind Turbines  

Science Journals Connector (OSTI)

Increasing energy demand coupled with pollution free production of energy has found a viable solution in wind energy. Land based windmills have been utilized for power generation for more than two thousand years. In modern times wind generated power has become popular in many countries. Offshore wind turbines are being used in a number of countries to tap the energy from wind over the oceans and convert to electric energy. The advantages of offshore wind turbines as compared to land are that offshore winds flow at higher speed than onshore winds and the more available space. In some land based settings for better efficiency turbines are separated as much as 10 rotor diameters from each other. In offshore applications where only two wind directions are likely to predominate the distances between the turbines arranged in a line can be shortened to as little as two or four rotor diameters. Today more than a dozen offshore European wind facilities with turbine ratings of 450 kw to 3.6 MW exist offshore in very shallow waters of 5 to 12 m. Compared to onshore wind turbines offshore wind turbines are bigger and the tower height in offshore are in the range of 60 to 80 m. The water depths in oceans where offshore turbines can be located are within 30 m. However as the distance from land increases the costs of building and maintaining the turbines and transmitting the power back to shore also increase sharply. The objective of this paper is to review the parameters of design for the maximum efficiency of offshore wind turbines and to develop types offshore towers to support the wind turbines. The methodology of design of offshore towers to support the wind turbine would be given and the environmental loads for the design of the towers would be calculated for specific cases. The marine corrosion on the towers and the methods to control the corrosion also would be briefly presented. As the wind speeds tend to increase with distance from the shore turbines build father offshore will be able to capture more wind energy. Currently two types of towers are considered. Cylindrical tubular structures and truss type structures. But truss type structures have less weight and flexibility in design. The construction of the offshore towers to harness the wind energy is also presented. The results will include the calculation of wind and wave forces on the tower and the design details for the tower.

V. J. Kurian; S. P. Narayanan; C. Ganapathy

2010-01-01T23:59:59.000Z

23

Conversion Tower for Dispatchable Solar Power: High-Efficiency Solar-Electric Conversion Power Tower  

SciTech Connect (OSTI)

HEATS Project: Abengoa Solar is developing a high-efficiency solar-electric conversion tower to enable low-cost, fully dispatchable solar energy generation. Abengoas conversion tower utilizes new system architecture and a two-phase thermal energy storage media with an efficient supercritical carbon dioxide (CO2) power cycle. The company is using a high-temperature heat-transfer fluid with a phase change in between its hot and cold operating temperature. The fluid serves as a heat storage material and is cheaper and more efficient than conventional heat-storage materials, like molten salt. It also allows the use of a high heat flux solar receiver, advanced high thermal energy density storage, and more efficient power cycles.

None

2012-01-11T23:59:59.000Z

24

Cooling Towers, Energy Conservation Strategies  

E-Print Network [OSTI]

undersized due to the low bidder syndrome (1). 4. New plant expansion needs colder temperatures off the tower. State of the Art Upgrading Users of cooling towers are not par ticularly concerned with the thermal analysis involving calculus, or delving... HISTORY I Anhydrous Ammonia Plant The Hawkeye Chemical Corporation, a subsidiary of the Getty Oil Company, pro jected a 50% expansion of their anhydroug ammonia output from 120,000 tons (1.09 Kg) per year to ~ production level of 225,000 tons (2...

Burger, R.

1983-01-01T23:59:59.000Z

25

Commissioning through "EDF Tower" construction  

E-Print Network [OSTI]

michel rouillot -architecte d.p.l.g. CommissioningCommissioningthrough through ??EDF TowerEDF Tower? construction? construction by Michel Rouillot Architect D.P.L.G. michel rouillot -architecte d.p.l.g. What is a building project ? michel rouillot... -architecte d.p.l.g. A spatial answerfor a work structure michel rouillot -architecte d.p.l.g. A very strong relationship between many building participants michel rouillot -architecte d.p.l.g. The production of the buildingThe production of the building...

Rouillot, M.

2004-01-01T23:59:59.000Z

26

GreenTower | Open Energy Information  

Open Energy Info (EERE)

GreenTower Jump to: navigation, search Name: GreenTower Place: Haiger 6, Germany Zip: 35708 Sector: Solar Product: Developer of a solar chimney technology, with greenhouses for...

27

Automatically controlled wind propeller and tower shadow eliminator  

SciTech Connect (OSTI)

A propeller hub carries pivotally-mounted blades that are linked to a spring-loaded collar on the propeller shaft for automatic coning and feathering under predetermined high velocity movement along the propeller shaft to change the blade pitch angle during low wind velocity conditions. An airfoil support mounts a propeller shaft and turns therewith to reduce tower shadow effects. This is called a ''down-wind system'' meaning the propeller is behind the tower and causes the assembly to rotate into the wind without a tail vane.

Randolph, A.J.

1982-01-12T23:59:59.000Z

28

The solar towers of Chankillo  

E-Print Network [OSTI]

An ancient solar observatory is composed by thirteen towers lined on a hill of a coastal desert of Peru. This is the Chankillo observatory. Here we discuss it, showing some simulations of the local sun direction. An analysis of the behaviour of shadows is also proposed.

Sparavigna, Amelia Carolina

2012-01-01T23:59:59.000Z

29

Microsoft Word - Final_NineCanyon_CommunicationTowerInstall_CX  

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

1, 2013 1, 2013 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Kelly Gardner, PMP Project Manager, TEP-TPP-1 Proposed Action: Nine Canyon Substation Communication Tower Addition: 331800 McNary Sub Bus Tie Relay Replacements and 310427 McNary-Badger Canyon Transfer Trip Install Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.6 - Additions and modifications to transmission facilities Location: Kennewick, Benton County, Washington Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to install a 60-foot communications tower and associated communication equipment at the Benton County Public Utility District's Nine Canyon Substation in Benton County, Washington. The upgrade would involve replacing the

30

Vortex-augmented cooling tower - windmill combination  

DOE Patents [OSTI]

A cooling tower for cooling large quantities of effluent water from a production facility by utilizing natural wind forces includes the use of a series of helically directed air inlet passages extending outwardly from the base of the tower to introduce air from any direction in a swirling vortical pattern while the force of the draft created in the tower makes it possible to place conventional power generating windmills in the air passage to provide power as a by-product.

McAllister, J.E. Jr.

1982-09-02T23:59:59.000Z

31

Multi-objective optimization of solar tower power plants  

E-Print Network [OSTI]

Multi-objective optimization of solar tower power plants Pascal Richter Center for Computational · Optimization of solar tower power plants 1/20 #12;Introduction ­ Solar tower power plants Solar tower PS10 (11 MW) in Andalusia, Spain · Solar tower with receiver · Heliostat field with self-aligning mirrors

Ábrahám, Erika

32

CXAllenRadioTower2.pdf  

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

Southwestern Power Administration proposes to modify and reconstruct its Allen Radio Tower communications site as part of the Spectrum Relocation project. Categorical...

33

Sandia National Laboratories: Power Towers for Utilities  

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

Engine Test Facility Central Receiver Test Facility Power Towers for Utilities Solar Furnace Dish Test Facility Optics Lab Parabolic Dishes Work For Others (WFO) User...

34

Switching of localized surface plasmon resonance of gold nanoparticles on a GeSbTe film mediated by nanoscale phase change and modification of surface morphology  

SciTech Connect (OSTI)

As a platform for active nanophotonics, localized surface plasmon resonance (LSPR) switching via interaction with a chalcogenide phase change material (GeSbTe) was investigated. We performed single-particle spectroscopy of gold nanoparticles placed on a GeSbTe thin film. By irradiation with a femtosecond pulsed laser for amorphization and a continuous wave laser for crystallization, significant switching behavior of the LSPR band due to the interaction of GeSbTe was observed. The switching mechanism was explained in terms of both a change in the refractive index and a modification of surface morphology accompanying volume expansion and reduction of GeSbTe.

Hira, T.; Homma, T.; Uchiyama, T.; Kuwamura, K.; Saiki, T. [Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku, Yokohama, Kanagawa 223-8522 (Japan)] [Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku, Yokohama, Kanagawa 223-8522 (Japan)

2013-12-09T23:59:59.000Z

35

A Microcomputer Model of Crossflow Cooling Tower Performance  

E-Print Network [OSTI]

The energy use characteristics of evaporative cooling towers are of interest because, although such towers are widely used in industry, they do require a substantial amount of energy. Evaporative cooling towers are basically large heat exchangers...

Reichelt, G. E; Jones, J. W.

1984-01-01T23:59:59.000Z

36

Wind turbine tower for storing hydrogen and energy  

DOE Patents [OSTI]

A wind turbine tower assembly for storing compressed gas such as hydrogen. The tower assembly includes a wind turbine having a rotor, a generator driven by the rotor, and a nacelle housing the generator. The tower assembly includes a foundation and a tubular tower with one end mounted to the foundation and another end attached to the nacelle. The tower includes an in-tower storage configured for storing a pressurized gas and defined at least in part by inner surfaces of the tower wall. In one embodiment, the tower wall is steel and has a circular cross section. The in-tower storage may be defined by first and second end caps welded to the inner surface of the tower wall or by an end cap near the top of the tower and by a sealing element attached to the tower wall adjacent the foundation, with the sealing element abutting the foundation.

Fingersh, Lee Jay (Westminster, CO)

2008-12-30T23:59:59.000Z

37

Composite Tower Solutions | Open Energy Information  

Open Energy Info (EERE)

Solutions Solutions Jump to: navigation, search Name Composite Tower Solutions Place Provo, Utah Zip 84604 Sector Wind energy Product Composite Tower Solutions manufactures equipment for wind resource assessment needs, including meteorological towers, weather towers, and data collection and instrumentation towers. Coordinates 40.233765°, -111.668509° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.233765,"lon":-111.668509,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

38

Federal Energy Management Program: Best Management Practice: Cooling Tower  

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

Cooling Tower Management to someone by E-mail Cooling Tower Management to someone by E-mail Share Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Facebook Tweet about Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Twitter Bookmark Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Google Bookmark Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Delicious Rank Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Digg Find More places to share Federal Energy Management Program: Best Management Practice: Cooling Tower Management on AddThis.com... Sustainable Buildings & Campuses Operations & Maintenance

39

Cooling Tower Report, October 2008 | Department of Energy  

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

2008 Electricity Reliability Impacts of a Mandatory Cooling Tower Rule for Existing Steam Generation Units Cooling Tower Report, October 2008 More Documents & Publications...

40

Wind, Thermal, and Earthquake Monitoring of the Watts Towers  

E-Print Network [OSTI]

C Solar heating will introduce stresses into the towersTower. The LACMA weather station records additional variables such as humidity and solar

English, Jackson

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower modifications changing" 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

Microsoft Word - CX-SpringCreek-WineCountry-TowerRelocationFY13_WEB.doc  

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

November 29, 2012 November 29, 2012 REPLY TO ATTN OF: KEPR-4 SUBJECT: Environmental Clearance Memorandum Justin Estes Project Manager - TELM-TPP-3 Proposed Action: Spring Creek - Wine County No. 1 Transmission Tower Relocation Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.6 Additions and modifications to transmission facilities Location: Multnomah County, OR Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA is proposing to relocate one transmission tower, located on private agricultural land, which has been damaged by farm equipment. Currently, tower 29/3 on BPA's Spring Creek - Wine Country No. 1 transmission line, resides on an agricultural access road that is bordered on both sides by active agricultural fields. This

42

Best Management Practice: Cooling Tower Management | Department of Energy  

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

Best Management Practice: Cooling Tower Management Best Management Practice: Cooling Tower Management Best Management Practice: Cooling Tower Management October 8, 2013 - 9:39am Addthis Cooling towers regulate temperature by dissipating heat from recirculating water used to cool chillers, air-conditioning equipment, or other process equipment. Heat is rejected from the tower primarily through evaporation. Therefore, by design, cooling towers consume significant amounts of water. Overview The thermal efficiency and longevity of the cooling tower and equipment used to cool depend on the proper management of water recirculated through the tower. Water leaves a cooling tower system in any one of four ways: Evaporation: This is the primary function of the tower and is the method that transfers heat from the cooling tower system to the

43

Multi-objective optimization of solar tower heliostat fields  

E-Print Network [OSTI]

Multi-objective optimization of solar tower heliostat fields Pascal Richter, Martin Frank and Erika Introduction Solar tower plants generate electric power from sunlight by focusing concentrated solar radiation electricity. Fig. 1 Solar tower plant PS10, 11 MW in Andalusia, Spain. [Source: flickr] Solar tower plants

Ábrahám, Erika

44

Optimal sequencing of a cooling tower with multiple cells  

E-Print Network [OSTI]

This paper evaluates the energy savings potential of multi-cell cooling tower optimal sequencing control methods. Annual tower fan energy usage is calculated for a counter-flow tower with multiple variable-speed fans. Effectiveness-NTU tower model...

Zhang, Z.; Liu, J.

2012-01-01T23:59:59.000Z

45

Hydraulic Cooling Tower Driver- The Innovation  

E-Print Network [OSTI]

One of the weaknesses of present day cooling tower drives are fan wrecks caused by shaft couplings breaking, gear box malfunctions due to inadequate lubrication, gear tooth wear, and inaccessibility for inspection and routine maintenance. The hydro...

Dickerson, J. A.

46

On thermal performance of seawater cooling towers  

E-Print Network [OSTI]

Seawater cooling towers have been used since the 1970s in power generation and other industries, so as to reduce the consumption of freshwater. The salts in seawater are known to create a number of operational problems, ...

Sharqawy, Mostafa H.

47

Projective preservation : reframing Rudolph's Tower for Boston  

E-Print Network [OSTI]

By 2012, the fate of Paul Rudolph's tower in downtown Boston has been in question for years while a vision of a denser city calls for its demolition. Projected development on the site currently argues that to move forward, ...

Turner, Jessica K

2012-01-01T23:59:59.000Z

48

Cooling Towers--Energy Conservation Strategies  

E-Print Network [OSTI]

A cooling water system can be optimized by operating the cooling tower at the highest possible cycles of concentration without risking sealing and fouling of heat exchanger surfaces, tube bundles, refrigeration equipment, overhead condensers...

Matson, J.

49

Cooling Towers, The Neglected Energy Resource  

E-Print Network [OSTI]

Loving care is paid to the compressors, condensers, and computer programs of refrigeration systems. When problems arise, operator: run around in circles with expensive "fixes", but historically ignore the poor orphan, the cooling tower perched...

Burger, R.

1985-01-01T23:59:59.000Z

50

Advanced wet-dry cooling tower concept  

E-Print Network [OSTI]

The purpose of this years' work has been to test and analyze the new dry cooling tower surface previously developed. The model heat transfer test apparatus built last year has been instrumented for temperature, humidity ...

Snyder, Troxell Kimmel

51

Side Stream Filtration for Cooling Towers  

Broader source: Energy.gov [DOE]

Report assesses side stream filtration options for cooling towers with an objective to assess key attributes that optimize energy and water savings and provide information about specific technology and implementation options.

52

Project Profile: Brayton Cycle Baseload Power Tower  

Broader source: Energy.gov [DOE]

Wilson Solarpower, under the Baseload CSP FOA, is validating a proposed utility-scale, Brayton cycle baseload power tower system with a capacity factor of at least 75% and LCOE of $0.09/kWh.

53

Cooling Towers, The Neglected Energy Resource  

E-Print Network [OSTI]

COOLING TOWERS, THE NEGLECTED ENERGY RESOURCE ROBERT BURGER President, Burger Associates, Inc. Dallas, Texas (USA) Loving care is paid to the compress ors, condensers, and computer programs of refrigeration and air conditioning systems... is too hot, high temperature cut-outs occur and more energy must be provided to the motors to maintain the refrigeration cycle. COOLING TOWERS: 1) are just as important a link in the chain as the other equipment, 2) are an important source...

Burger, R.

54

Wind Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy  

Office of Energy Efficiency and Renewable Energy (EERE)

Case study that summarizes the Wind Tower Systems and its Space Frame tower. Describes their new wind tower design and explains how DOE funding made this possible.

55

Radio Towers Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Radio Towers Geothermal Area Radio Towers Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Radio Towers Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.03666667,"lon":-115.4566667,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

56

Broadwind Energy Formerly Tower Tech Holdings | Open Energy Information  

Open Energy Info (EERE)

Broadwind Energy Formerly Tower Tech Holdings Broadwind Energy Formerly Tower Tech Holdings Jump to: navigation, search Name Broadwind Energy (Formerly Tower Tech Holdings) Place Manitowoc, Wisconsin Zip 54221-1957 Sector Wind energy Product US-based manufacturer of wind turbine towers, turbine assemblies such as nacelles, and monopiles. References Broadwind Energy (Formerly Tower Tech Holdings)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Broadwind Energy (Formerly Tower Tech Holdings) is a company located in Manitowoc, Wisconsin . References ↑ "Broadwind Energy (Formerly Tower Tech Holdings)" Retrieved from "http://en.openei.org/w/index.php?title=Broadwind_Energy_Formerly_Tower_Tech_Holdings&oldid=343059"

57

Wind Turbine Towers Establish New Height Standards and Reduce...  

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

Wind Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy Wind Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy Case study that...

58

Project Profile: Solar Power Tower Improvements with the Potential...  

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

with its baseline solar tower configuration, which is well represented by the System Advisor Model template for a 100-MW solar tower. This mature system-level design is the...

59

Vibration Control for Bridge Towers and Field Measurement  

Science Journals Connector (OSTI)

When the tower was under construction, there were some occasions to measure wind-induced response of the tower and also the performance of vibration control devices. Figure9.8...shows the observed relationship, ...

Yozo Fujino; Kichiro Kimura; Hiroshi Tanaka

2012-01-01T23:59:59.000Z

60

Best Management Practice #10: Cooling Tower Management | Department...  

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

Evaporation: This is the primary function of the tower and is the method that transfers heat from the cooling tower system to the environment. The quantity of evaporation is not...

Note: This page contains sample records for the topic "tower modifications changing" 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

Optimal Heliostat Layout for Concentrating Solar Tower Systems  

Science Journals Connector (OSTI)

A methodology to give an optimal layout of a group of heliostats has been developed for concentrating solar tower ... the method determines an optimal configuration of a heliostat field around a tower where refle...

Motoaki Utamura; Yutaka Tamaura

2007-01-01T23:59:59.000Z

62

Microsoft Word - CX-Pearl-Marion-Tower-6-2-Replace_FY12_WEB.doc  

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

3, 2012 3, 2012 REPLY TO ATTN OF: KEPR-4 SUBJECT: Environmental Clearance Memorandum Richard Heredia Project Manager - TEP-TPP-1 Proposed Action: Pearl-Marion No.1 Tower 6/2 replacement project PP&A Project No.: PP&A 2147, WO# 00296634, Task 3 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.6 Additions and modifications to transmission facilities Location: Canby, Clackamas County, Oregon Township 3 South, Range 1 East, Section 19 Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to replace a single tower (6/2) on the existing Pearl-Marion No. 1 500-kilovolt (kV) transmission line. Tower 6/2 is located along the Molalla River where natural river channel movement and continued stream bank erosion

63

Wind Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy  

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

Wind Tower Systems to develop the Wind Tower Systems to develop the Space Frame tower, a new concept for wind turbine towers. Instead of a solid steel tube, the Space Frame tower consists of a highly optimized design of five custom-shaped legs and interlaced steel struts. With this design, Space Frame towers can support turbines at greater heights, yet weigh and cost less than traditional steel tube towers. Wind Tower Systems LLC (now

64

Cooling Towers--Energy Conservation Strategies Preservative Spray Treatment Maintains Cooling Tower  

E-Print Network [OSTI]

Several problems common to most industrial wood framed cooling towers can be easily controlled with annual preservative spray treatment applications to the plenum area framework and drift eliminators. It eliminates the expensive periodic repairs due...

Reidenback, R.

65

Concentrating Solar Power Tower System Basics | Department of Energy  

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

Concentrating Solar Power Tower System Basics Concentrating Solar Power Tower System Basics Concentrating Solar Power Tower System Basics August 20, 2013 - 5:06pm Addthis In power tower concentrating solar power systems, numerous large, flat, sun-tracking mirrors, known as heliostats, focus sunlight onto a receiver at the top of a tall tower. A heat-transfer fluid heated in the receiver is used to generate steam, which, in turn, is used in a conventional turbine generator to produce electricity. Some power towers use water/steam as the heat-transfer fluid. Other advanced designs are experimenting with molten nitrate salt because of its superior heat-transfer and energy-storage capabilities. Individual commercial plants can be sized to produce up to 200 megawatts of electricity. Illustration of a power tower power plant. Sunlight is shown reflecting off a series of heliostats surrounding the tower and onto the receiver at the top of the tower. The hot heat-transfer fluid exiting from the receiver flows down the tower, into a feedwater reheater, and then into a turbine, which generates electricity that is fed into the power grid. The cool heat-transfer fluid exiting the turbine flows into a steam condenser to be cooled and sent back up the tower to the receiver.

66

SunShot Initiative: Brayton Cycle Baseload Power Tower  

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

Brayton Cycle Baseload Power Brayton Cycle Baseload Power Tower to someone by E-mail Share SunShot Initiative: Brayton Cycle Baseload Power Tower on Facebook Tweet about SunShot Initiative: Brayton Cycle Baseload Power Tower on Twitter Bookmark SunShot Initiative: Brayton Cycle Baseload Power Tower on Google Bookmark SunShot Initiative: Brayton Cycle Baseload Power Tower on Delicious Rank SunShot Initiative: Brayton Cycle Baseload Power Tower on Digg Find More places to share SunShot Initiative: Brayton Cycle Baseload Power Tower on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

67

Side Stream Filtration for Cooling Towers  

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

Side Stream Filtration Side Stream Filtration for Cooling Towers Prepared for the U.S. Department of Energy Federal Energy Management Program By Pacific Northwest National Laboratory X. Duan, J.L. Williamson, K.L McMordie Stoughton and B.K. Boyd October 2012 FEDERAL ENERGY MANAGEMENT PROGRAM i Contact Will Lintner, PE Federal Energy Management Program U.S. Department of Energy 1000 Independence Ave. SW Washington, DC 20585-0121 Phone: (202) 586-3120 E-mail: william.lintner@ee.doe.gov Cover photo: Cooling Towers. Photo from Pacific Northwest National Laboratory ii Acknowledgements The authors of the report would like to thank the following individuals that provided support to

68

Towards Holistic Power Tower System Optimization  

Science Journals Connector (OSTI)

Abstract Many stakeholders today consider power tower systems to be the most promising CSP technology for the future. Therefore much effort is spent to improve individual components and subsystems. While these are valuable steps towards cost reduction, it is also of great importance to perform an overall, i.e. holistic, system layout and optimization process. Still, even today heliostats are often characterized and even compared using the single parameter cost per square meter, which is not sufficient. More factors like optical and tracking accuracy, shape, structural deformation under operation loads and maybe even power consumption have to be factored in to allow for a meaningful comparison. In the paper recent activities targeting at a more holistic power tower system optimization are described. For the overall layout process of heliostat field, tower and receiver the complete system is modeled using SAM or an in-house tool based on SolTrace and Matlab to determine investment cost, annual electricity generation and resulting levelised electricity costs. By doing so, different heliostat types and field layouts can be directly compared using \\{LCoE\\} as a reasonable figure of merit. This logical approach to identify the optimum heliostat design is described and illustrated using two generic heliostat designs and the respective field layouts as an example; a recently developed updated tower cost curve is used. It is found that using specific heliostat costs (i.e. $/m2) alone as a figure of merit to assess different heliostat designs can be misleading, because heliostats characterized by lower specific investment costs, but also lower optical and tracking accuracy, can lead to higher levelised electricity costs, which means the real objective of power plant optimization is not reached by looking at heliostat costs per square meter alone.

G. Weinrebe; F. von Reeken; M. Whrbach; T. Plaz; V. Gcke; M. Balz

2014-01-01T23:59:59.000Z

69

District Cooling Using Central Tower Power Plant  

Science Journals Connector (OSTI)

Abstract During the operation of solar power towers there are occasions, commonly in the summer season, where some of the heliostats have to stop focusing at the central receiver, located at the top of the tower, because the maximum temperature that the receiver can withstand has been reached. The highest demands of cooling for air conditioning take place at these same occasions. In the present paper, we have analyzed the possibility of focusing the exceeding heliostats to the receiver increasing the mass flow rate of the heat transfer fluid over the nominal value and using the extra heat as a source of an absorption chiller. The chilled water would be used to cool buildings and offices, using a district cooling network. Using the extra heat of the solar power tower plant would greatly reduce the electricity usage. In this work we have analyzed the case of a circular field of heliostats focusing at a circular receiver, such as the case of Gemasolar plant. We have quantified the thermal power that can be obtained from the unused heliostats, the cooling capacity of the absorption system as well as the heat losses through the insulated pipes that distribute the chilled water to the buildings of the network.

C. Marugn-Cruz; S. Snchez-Delgado; M.R. Rodrguez-Snchez; M. Venegas

2014-01-01T23:59:59.000Z

70

Oak Ridge's EM Program Demolishes North America's Tallest Water Tower |  

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

Demolishes North America's Tallest Water Demolishes North America's Tallest Water Tower Oak Ridge's EM Program Demolishes North America's Tallest Water Tower August 27, 2013 - 12:00pm Addthis Oak Ridge’s K-1206 F Fire Water Tower falls into an empty field during a recent demolition project. Oak Ridge's K-1206 F Fire Water Tower falls into an empty field during a recent demolition project. OAK RIDGE, Tenn. - Oak Ridge's EM program recently demolished one of the most iconic structures at the East Tennessee Technology Park (ETTP). The 382-foot checkerboard water tower - the tallest in North America - dominated the site's skyline since its construction in 1958. The K-1206 F Fire Water Tower operated as part of the site's fire protection system, but it was drained, disconnected and permanently taken

71

Competitive Landscape of Mobile Telecommunications Tower Companies in India  

Science Journals Connector (OSTI)

With the entry of 3G and WiMAX players, the Indian mobile subscriber base is expected to reach 1110 million by the end of 2015. To meet mobile infrastructure demand, India will require approximately 350,000 to 400,000 mobile telecommunications towers ... Keywords: Business Models, Infrastructure Sharing, Joint Venture Companies, Mobile Network Operators MNO, Mobile Telecommunication Tower Valuation, Mobile Telecommunications Towers, Telecommunication Circles

N.P. Singh

2010-01-01T23:59:59.000Z

72

Upcoming Funding Opportunity for Tower Manufacturing and Installation...  

Office of Environmental Management (EM)

systems with hub heights of at least 120 meters. Scaling to taller towers allows wind turbines to capture less turbulent and often stronger wind resources, thereby increasing...

73

Concentrating Solar Power Tower System Basics | Department of...  

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

which, in turn, is used in a conventional turbine generator to produce electricity. Some power towers use watersteam as the heat-transfer fluid. Other advanced designs are...

74

Building a Better Transmission Tower | Department of Energy  

Energy Savers [EERE]

500-kilovolt tower one of hundreds on the McNary-John Day line saving BPA big bucks. | Photo courtesy of Bonneville Power Administration A helicopter hoists...

75

Upcoming Funding Opportunity for Tower Manufacturing and Installation...  

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

and logistics constraints affecting the deployment of taller utility-scale wind turbine systems with hub heights of at least 120 meters. Scaling to taller towers allows wind...

76

Microsoft Word - PowerTower_work_2009.doc  

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

tower systems Accomplishments * Helped Rocketdyne begin development of their own heliostat * Performed first-ever test of a heliostat at a distance of 1 mile * Updated SOLERGY...

77

Changes in sea-level associated with modifications on the mass balance of the Greenland and Antartic ice sheets over the 21st century  

E-Print Network [OSTI]

Changes in runoff from Greenland and Antarctica are often cited as one of the major concerns linked to anthropogenic changes in climate. The changes in mass balance, and associated changes in sea-level, of these two ice ...

Bugnion, Vronique.

78

Data Center Economizer Cooling with Tower Water; Demonstration of a  

E-Print Network [OSTI]

exchanger was configured to use higher temperature water produced by a cooling tower alone. The other coilLBNL-6660E Data Center Economizer Cooling with Tower Water; Demonstration of a Dual Heat Exchanger-temperature cooling water, so that it can support many more hours of free cooling compared to traditional systems

79

SUMMARY OF MATERIAL MODIFICATIONS FOR BOARD APPROVAL  

E-Print Network [OSTI]

SUMMARY OF MATERIAL MODIFICATIONS FOR BOARD APPROVAL FACULTY HANDBOOK Subject Description Relevant Handbook Sections Material Changes Change of Locus. Vacation benefit does not roll from year to year becoming a "use it or lose

80

Cooling Towers: Understanding Key Components of Cooling Towers and How to Improve Water Efficiency  

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

Paul Johnston-Knight Introduction Federal laws and regulations require Federal agencies to reduce water use and improve water efficiency. Namely, Executive Order 13514 Federal Leadership in Environmental, Energy, and Economic Performance, requires an annual two percent reduction of water use intensity (water use per square foot of building space) for agency potable water consumption as well as a two percent reduction of water use for industrial, landscaping, and agricultural applica- tions. Cooling towers can be a significant

Note: This page contains sample records for the topic "tower modifications changing" 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

Control of Noise in Power Station Cooling Tower Systems  

Science Journals Connector (OSTI)

Power?station cooling tower systems must handle large volumes of water and air with large potential energy in the water flows and the requirement for large fans. To minimize the noise generated at power station sites use is made of efficient tower fill materials dual low?speed fans (which shifts the spectrum and lowers mid?frequency noise level) and barrier effects in tower location and orientation. Conventional noise control measures such as mufflers are avoided because of the required increase in pressure across the fan and the high initial cost for quieting large towers. The use of natural draft towers is discussed and it is shown that although the low?frequency noise may be reduced the noise levels at typical property line locations are of the same order of magnitude as that for conventional mechanical cooling towers. Since cooling towers at power stations are required as an environmental (thermal) pollution control measure a trade?off between temperature rise of local water supplies versus increases in community noise becomes a critical factor.

Lewis S. Goodfriend

1973-01-01T23:59:59.000Z

82

Use of nanofiltration to reduce cooling tower water usage.  

SciTech Connect (OSTI)

Nanofiltration (NF) can effectively treat cooling-tower water to reduce water consumption and maximize water usage efficiency of thermoelectric power plants. A pilot is being run to verify theoretical calculations. A side stream of water from a 900 gpm cooling tower is being treated by NF with the permeate returning to the cooling tower and the concentrate being discharged. The membrane efficiency is as high as over 50%. Salt rejection ranges from 77-97% with higher rejection for divalent ions. The pilot has demonstrated a reduction of makeup water of almost 20% and a reduction of discharge of over 50%.

Sanchez, Andres L.; Everett, Randy L.; Jensen, Richard Pearson; Cappelle, Malynda A.; Altman, Susan Jeanne

2010-09-01T23:59:59.000Z

83

Proposed Transmission Towers Proposed New Substation Sites Proposed...  

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

6-1E: Recreation Inset Maps for Map 6-1C and Map 6-1D Proposed Transmission Towers Proposed New Substation Sites Proposed Route Segments (not drawn to scale) New Access Roads...

84

About the Design & Construction Collaborative Life Sciences Building & Skourtes Tower  

E-Print Network [OSTI]

About the Design & Construction Collaborative Life Sciences Building & Skourtes Tower With an emphasis on connection, the inter-disciplinary, multi-institutional building's design reflects its. Anticipating LEED Platinum rating, the building incorporated sustainable construction practices, including div

Chapman, Michael S.

85

Energy Efficiency Evaluation of Guangzhou West Tower Faade System  

E-Print Network [OSTI]

Guangzhou West Tower is an extremely tall public building. The energy efficiency evaluation of its faade should be different than that of ordinary public buildings. Based on the national code GB50189-2005, Design Standard for Energy efficiency...

Meng, Q.; Zhang, L.

2006-01-01T23:59:59.000Z

86

Cooling Towers - Energy Conservation and Money Making Mechanisms  

E-Print Network [OSTI]

The utilization of colder water conserves energy, creates profits, increases product output. In an effort to obtain greater efficiencies and conserve both energy and dollars, all too many engineers neglect the potential of the cooling tower. Many...

Burger, R.

1981-01-01T23:59:59.000Z

87

On towers of function fields of Artin-Schreier type  

Science Journals Connector (OSTI)

In this article we derive strong conditions on the defining equations of asymptotically good Artin-Schreier towers. We will show that at most three kinds of defining equations can give rise to a recursively de...

Peter Beelen; Arnaldo Garcia 1; 2

2004-07-01T23:59:59.000Z

88

Dynamics and optimal control of flexible solar updraft towers  

Science Journals Connector (OSTI)

...control of flexible solar updraft towers...University of New Mexico, , Albuquerque...USA The use of solar chimneys for energy production was...a) Potential energy as a function of...University of New Mexico solar chimney prototype...

2015-01-01T23:59:59.000Z

89

Workers Safely Tear Down Towers at Manhattan Project Site | Department...  

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

uncontaminated and in a non-posted area. Addthis Related Articles Oak Ridge's K-1206 F Fire Water Tower falls into an empty field during a recent demolition project. Oak Ridge's...

90

Don Ana Sun Tower Solar Power Plant | Open Energy Information  

Open Energy Info (EERE)

Don Ana Sun Tower Solar Power Plant Don Ana Sun Tower Solar Power Plant Jump to: navigation, search Name Don Ana Sun Tower Solar Power Plant Facility Don Ana Sun Tower Sector Solar Facility Type Concentrating Solar Power Developer NRG Energy/eSolar Location Dona Ana County, New Mexico Coordinates 32.485767°, -106.7234639° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.485767,"lon":-106.7234639,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

91

Alpine SunTower Solar Power Plant | Open Energy Information  

Open Energy Info (EERE)

SunTower Solar Power Plant SunTower Solar Power Plant Jump to: navigation, search Name Alpine SunTower Solar Power Plant Facility Alpine SunTower Sector Solar Facility Type Concentrating Solar Power Developer NRG Energy/eSolar Location Lancaster, California Coordinates 34.6867846°, -118.1541632° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":34.6867846,"lon":-118.1541632,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

92

Suppression of the vibrations of wind turbine towers  

Science Journals Connector (OSTI)

......suppression of the vibrations of wind turbine towers. As a source of renewable and clean energy, wind power is rapidly increasing its...capacity in many countries. Large offshore turbines are subjected to severe weather......

Xiaowei Zhao; George Weiss

2011-09-01T23:59:59.000Z

93

2010sr27[cooling_tower_complete].doc  

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

Friday, September 17, 2010 Friday, September 17, 2010 james-r.giusti@srs.gov Paivi Nettamo, SRNS, (803) 952-6938 paivi.nettamo@srs.gov K Cooling Tower Project Reaches Completion Aiken, S.C. - One of the most visual milestones of cleanup projects underway within the Department of Energy's Office of Environmental Management was the demolition of the K-Reactor Cooling Tower at the Savannah River Site (SRS). Now, this American Recovery and Reinvestment Act project has been

94

Parametric study and dynamic analysis of compliant piled towers  

E-Print Network [OSTI]

PARAMETRIC STUDY AND DYNAMIC ANALYSIS OF COMPLIANT PILED TOWERS A Thesis by KARL HEINZ MOOG Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree ol' MASTER OF SCIENCE... May f990 Major Subject: Ocean Engineering PARAMETRIC STUDY AND DYNAMIC ANALYSIS OF COMPLIANT PILED TOWERS A Thesis by KARL HEINZ MOOG Approved as to style and content by: Jack Lou (Chair of Committee) Ala. n slazzolo (Member) Robert Randall...

Moog, Karl Heinz

2012-06-07T23:59:59.000Z

95

Rebuilding the Tower of Babel: An introduction to freshman composition  

E-Print Network [OSTI]

REBUILDING THE TOWER OF BABEL: AN INTRODUCTION TO FRESHMAN COMPOSITION A Thesis by KAREN DAVIS Submitted to the Graduate College of Texas ABM University in partial fulfillment of the requirement for the degree of MASTER OF ARTS May 1978... Major Subject: English REBUILDING THE TOWER OF BABEL: AN INTRODUCTION TO FRESHMAN COMPOSITION A Thesis by KAREN DAVIS Approved as to style and content by: (Chairman of Committee) Head of Department) 7 i +i~ Mem er) (Member) May 1978 ABSTRACT...

Davis, Karen

2012-06-07T23:59:59.000Z

96

American Tower Company | Open Energy Information  

Open Energy Info (EERE)

Company Company Jump to: navigation, search Name American Tower Company Address P.O. Box 29 Place Shelby, Ohio Zip 44875 Sector Wind energy Product Agriculture;Business and legal services; Energy audits/weatherization; Engineering/architectural/design; Manufacturing; Retail product sales and distribution Phone number 419-347-1185 Website http://www.amertower.com Coordinates 40.8814452°, -82.6618424° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.8814452,"lon":-82.6618424,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

97

Femtosecond laser-induced modification of potassium-magnesium silicate glasses: An analysis of structural changes by near edge x-ray absorption spectroscopy  

SciTech Connect (OSTI)

The effects of femtosecond laser pulse irradiation on the glass structure of alkaline silicate glasses were investigated by x-ray absorption near edge structure spectroscopy using the beamline of the Physikalisch-Technische Bundesanstalt at the electron synchrotron BESSY II in Berlin (Germany) by analyzing the magnesium K-edge absorption peak for different laser fluences. The application of fluences above the material modification threshold (2.1 J/cm{sup 2}) leads to a characteristic shift of {approx}1.0 eV in the K-edge revealing a reduced ({approx}3%) mean magnesium bond length to the ligated oxygen ions (Mg-O) along with a reduced average coordination number of the Mg ions.

Seuthe, T.; Eberstein, M. [Fraunhofer-Institut fuer Keramische Technologien und Systeme (IKTS), Winterbergstrasse 28, 01277 Dresden (Germany); Hoefner, M.; Eichler, H. J.; Grehn, M. [Technische Universitaet Berlin, Institut fuer Optik und Atomare Physik, Strasse des 17. Juni 135, 10623 Berlin (Germany); Reinhardt, F. [Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587 Berlin (Germany); Tsai, W. J. [ITRI South, Industrial Technology Research Institute, 8 Gongyan Rd., Liu-jia District, Tainan City 73445, Taiwan (China); Bonse, J. [BAM Bundesanstalt fuer Materialforschung und - pruefung, Unter den Eichen 87, 12205 Berlin (Germany)

2012-05-28T23:59:59.000Z

98

Utility-Scale Power Tower Solar Systems: Performance Acceptance Test Guidelines  

SciTech Connect (OSTI)

The purpose of these Guidelines is to provide direction for conducting performance acceptance testing for large power tower solar systems that can yield results of a high level of accuracy consistent with good engineering knowledge and practice. The recommendations have been developed under a National Renewable Energy Laboratory (NREL) subcontract and reviewed by stakeholders representing concerned organizations and interests throughout the concentrating solar power (CSP) community. An earlier NREL report provided similar guidelines for parabolic trough systems. These Guidelines recommend certain methods, instrumentation, equipment operating requirements, and calculation methods. When tests are run in accordance with these Guidelines, we expect that the test results will yield a valid indication of the actual performance of the tested equipment. But these are only recommendations--to be carefully considered by the contractual parties involved in the Acceptance Tests--and we expect that modifications may be required to fit the particular characteristics of a specific project.

Kearney, D.

2013-03-01T23:59:59.000Z

99

Modification and Application of a New Method for Retrieving Water...  

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

Modification and Application of a New Method for Retrieving Water-Cloud Microphysics Vertical Profile F.-L Chang and Z. Li Earth System Science Interdisciplinary Center University...

100

Technical Evaluation of Side Stream Filtration for Cooling Towers  

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

Cooling Towers (photo from Pacific Cooling Towers (photo from Pacific Northwest National Laboratory) * Scaling: Scaling is the precipitation of dissolved mineral components that have become saturated in solution, which can lower efficiency of the system. * Fouling: Fouling occurs when suspended particles or biologic growth forms an insulating film on heat transfer surfaces. Common foulants include organic matter, process oils, and silt, which can also lower system performance. * Microbiological Activity: Microbiological activity refers to microorganisms that live and grow in the cooling system that can contribute

Note: This page contains sample records for the topic "tower modifications changing" 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

Technical Evaluation of Side Stream Filtration for Cooling Towers  

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

Cooling Towers (photo from Pacific Cooling Towers (photo from Pacific Northwest National Laboratory) * Scaling: Scaling is the precipitation of dissolved mineral components that have become saturated in solution, which can lower efficiency of the system. * Fouling: Fouling occurs when suspended particles or biologic growth forms an insulating film on heat transfer surfaces. Common foulants include organic matter, process oils, and silt, which can also lower system performance. * Microbiological Activity: Microbiological activity refers to microorganisms that live and grow in the cooling system that can contribute

102

Multi-tower line focus Fresnel array project  

SciTech Connect (OSTI)

As an alternative to conventional tracking solar thermal trough systems, one may use line focus Fresnel reflector systems. In a conventional Fresnel reflector design, each field of reflectors is directed to a single tower. However efficient systems of very high ground utilisation can be setup if a field of reflectors uses multiple receivers on different towers. This paper describes a line focus system, called the compact linear fresnel reflector system and a project to produce an initial 95 MWth solar array. The array will be used as a retrofit preheater for a coal fired generating plant.

Mills, D.R.; Morrison, G.; Pye, J.; Le Lievre, P. [Solar Heat & Power SHP Pty. Ltd., Sydney, NSW (Australia)

2006-02-15T23:59:59.000Z

103

A test section for evaluating cooling tower components  

E-Print Network [OSTI]

be- ing, used i'or the evaluation of various t;, . pss of cooling tower packing. The mater measuring and heating equipnent hsvs been used in ths testing of two small cmneroial cooling tcsrers. 37 C~WP18FR STATIC PREDStlRE -/g. g~g 1 fry v t t... be- ing, used i'or the evaluation of various t;, . pss of cooling tower packing. The mater measuring and heating equipnent hsvs been used in ths testing of two small cmneroial cooling tcsrers. 37 C~WP18FR STATIC PREDStlRE -/g. g~g 1 fry v t t...

Alter, Alan Brian

2012-06-07T23:59:59.000Z

104

SunShot Initiative: Solar Power Tower Improvements with the Potential to  

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

Solar Power Tower Improvements Solar Power Tower Improvements with the Potential to Reduce Costs to someone by E-mail Share SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Facebook Tweet about SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Twitter Bookmark SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Google Bookmark SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Delicious Rank SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Digg Find More places to share SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on AddThis.com... Concentrating Solar Power

105

Tower of Hanoi Most of the following paragraphs were copied from wikipedia [I]. Pictures were bor-  

E-Print Network [OSTI]

/shopping/item-img/tower-of -hanoi-01.jpg [3] http ://www .mactech.com/articles/mactech/Vol .02/02.01/Towers/img002.gif For applets

Lalín, Matilde

106

SHM BASED SYSTEM DESIGN OFA WIND TURBINE TOWER USING A MODAL SENSITIVITY BASED BAYES DETECTOR  

E-Print Network [OSTI]

SHM BASED SYSTEM DESIGN OFA WIND TURBINE TOWER USING A MODAL SENSITIVITY BASED BAYES DETECTOR Mads of the NREL 5MW wind turbine tower subjected to bending fatigue and horizontal circumferential cracking

Boyer, Edmond

107

Propagation of the low-frequency noise generated by power station water-cooling towers  

Science Journals Connector (OSTI)

The propagation of low-frequency noise generated by air turbulent motion in water-cooling towers is investigated by the use of geometrical acoustics of moving media. It is shown that a cooling tower plum acts ...

Sergei P. Fisenko

1997-01-01T23:59:59.000Z

108

The Parameter Optimization and Analysis of a Multi-Stage Tower Type of Solar Desalination Unit  

Science Journals Connector (OSTI)

After the analysis of the multi-stage tower type of solar desalination unit[1], the unit is optimized...

Chen Ziqian; He Kaiyan; Zheng Hongfei

2009-01-01T23:59:59.000Z

109

Optimal design of a dry-type natural-draft cooling tower by geometric programming  

Science Journals Connector (OSTI)

In this paper, the optimal design of dry-type natural-draft cooling towers is investigated. Using...

J. G. Ecker; R. D. Wiebking

1978-10-01T23:59:59.000Z

110

Optimal Design of a Dry-Type Natural-Draft Cooling Tower by Geometric Programming  

Science Journals Connector (OSTI)

In this paper, the optimal design of dry-type natural-draft cooling towers is investigated. Using...

J. G. Ecker; R. D. Wiebking

1980-01-01T23:59:59.000Z

111

Ilchmann, Achim; Pahl, M. : Adaptive Multivariable pH Regulation of a Biogas Tower Reactor  

E-Print Network [OSTI]

Ilchmann, Achim; Pahl, M. : Adaptive Multivariable pH Regulation of a Biogas Tower Reactor Zuerst. The adaptive controller was successlullytesteclover il pcriod of tu'o nonths at a biogas tower reuetoriu pilot are not applicable to the biogas tower reüctor.since a dontinatingf-eatureof the new reactol' prir-rciplc-is its

Knobloch,Jürgen

112

THE TOWER FOUNDATION OF SAN JOSE STATE UNIVERSITY Procurement Card Application  

E-Print Network [OSTI]

THE TOWER FOUNDATION OF SAN JOSE STATE UNIVERSITY Procurement Card Application CARDHOLDER card is lost or stolen, I will notify the Tower Foundation immediately. I will surrender my Procurement Card to Tower Foundation upon termination of employment or upon reallocation of duties which do

Eirinaki, Magdalini

113

* : Hossein Ameri Novel Client Booking System in KLCC Twin Tower Bridge  

E-Print Network [OSTI]

Tower Bridge H. Ameri* University Malaya Center of research and applied electronics, University as well as scheduling tours to visit "Petronas Twin Towers Sky Bridge". The system should at least support of this system are tourist who would like to visit the twin towers sky bridge, system operators that includes

Paris-Sud XI, Université de

114

On the growth of Betti numbers in $p$-adic analytic towers.  

E-Print Network [OSTI]

We study the asymptotic growth of Betti numbers in tower of finite covers and provide simple proofs of approximation results, which were previously obtained by Calegari-Emerton, in the generality of arbitrary p-adic analytic towers of covers. Further, we also obtain partial results about arbitrary pro-$p$ towers.

Nicolas Bergeron; Peter Linnell; Wolfgang Lck; Roman Sauer

115

PS10 Solar Power Tower Xi Jing, Fang  

E-Print Network [OSTI]

the solar energy to the grid in 2007 Operating cash flow 1.4 millions in 2007.Operating cash flow 1PS10 Solar Power Tower Xi Jing, Fang #12;Overview Magnitudes , Cost & TechnologiesMagnitudes , Cost Technological ,Social Problems and PolicyTechnological ,Social Problems and Policy ChallengesChallenges #12

Prevedouros, Panos D.

116

Brayton-Cycle Baseload Power Tower CSP System  

SciTech Connect (OSTI)

The primary objectives of Phase 2 of this Project were: 1. Engineer, fabricate, and conduct preliminary testing on a low-pressure, air-heating solar receiver capable of powering a microturbine system to produce 300kWe while the sun is shining while simultaneously storing enough energy thermally to power the system for up to 13 hours thereafter. 2. Cycle-test a high-temperature super alloy, Haynes HR214, to determine its efficacy for the systems high-temperature heat exchanger. 3. Engineer the thermal energy storage system This Phase 2 followed Wilsons Phase 1, which primarily was an engineering feasibility study to determine a practical and innovative approach to a full Brayton-cycle system configuration that could meet DOEs targets. Below is a summary table of the DOE targets with Wilsons Phase 1 Project results. The results showed that a Brayton system with an innovative (low pressure) solar receiver with ~13 hours of dry (i.e., not phase change materials or molten salts but rather firebrick, stone, or ceramics) has the potential to meet or exceed DOE targets. Such systems would consist of pre-engineered, standardized, factory-produced modules to minimize on-site costs while driving down costs through mass production. System sizes most carefully analyzed were in the range of 300 kWe to 2 MWe. Such systems would also use off-the-shelf towers, blowers, piping, microturbine packages, and heliostats. Per DOEs instructions, LCOEs are based on the elevation and DNI levels of Daggett, CA, for a 100 MWe power plant following 2 GWe of factory production of the various system components. Success criteria DOE targets Wilson system LCOE DOEs gas price $6.75/MBtu 9 cents/kWh 7.7 cents/kWh LCOE Current gas price $4.71/MBtu NA 6.9 cents/kWh Capacity factor 75% (6500hr) 75-100% Solar fraction 85% (5585hr) >5585hr Receiver cost $170/kWe $50/kWe Thermal storage cost $20/kWhth $13/kWhth Heliostat cost $120/m2 $89.8/m2

Anderson, Bruce

2013-12-31T23:59:59.000Z

117

INL Contract Modifications  

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

Modifications to Contract No. DE-AC07-05ID14517 Modifications to Contract No. DE-AC07-05ID14517 You are here: DOE-ID Home > Contracts, Financial Assistance & Solicitations > INL Contract > INL Basic Modifications Blue Line Free Acrobat Reader Link The documents listed below represent an electronic copy of modifications to the contract for the Management and Operation of the INL awarded to Battelle Energy Alliance, LLC. These documents are in PDF format. The Adobe Reader is required to access them. If you do not currently have the Acrobat Reader, you may download the Reader FREE by clicking on the icon at left. Blue Line Pending NUMBER DATE SIGNED DESCRIPTION File Size (in KB) 283 September 30, 2013 Funding 105 282 September 30, 2013 Funding 104 281 September 27, 2013 Funding 104

118

Class 1 Permit Modification Notification  

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

Class 1 Permit Modification to the Hazardous Waste Facility Permit, Permit Number: NM4890139088-TSDF Dear Mr. Kieling : Enclosed is a Class 1 Permit Modification Notification 1 0:...

119

Tower City, North Dakota: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Tower City, North Dakota: Energy Resources Tower City, North Dakota: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 46.9227548°, -97.6739889° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":46.9227548,"lon":-97.6739889,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

120

Advanced Lighting Controls - My Venture from the Ivory Tower  

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

Advanced Lighting Controls - My Venture from the Ivory Tower Advanced Lighting Controls - My Venture from the Ivory Tower Speaker(s): Charlie Huizenga Date: June 15, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Dragan Charlie Curcija Lighting energy represents 30-40% of commercial building electricity consumption, yet very few buildings have advanced lighting controls. The potential energy savings are tremendous as is the opportunity to reduce demand on the grid during critical peak use periods. Charlie will describe how low-cost wireless radio technology developed at UC Berkeley and commercialized by Adura Technologies is creating a paradigm shift in the way we think about controlling lighting. Beyond deep energy savings and demand response, the technology offers personal control for occupants and

Note: This page contains sample records for the topic "tower modifications changing" 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

Geometry of tower-type solar electric station heliostat field  

SciTech Connect (OSTI)

A general method is presented for calculating the angular positions of an arbitrary heliostat at an arbitrary position in a heliostat field surrounding a tower-type solar electric station as a function of solar position. A system of angular coordinates is used which rotates with the solar azimuth direction around the collecting tower, resulting in an expression for the proper orientation of heliostat mirrors that is independent of local latitude, solar declination and time of day. The lines on the horizontal plane of the heliostat field characterized by the same values of the angles governing the horizontal inclination of the corresponding heliostat for a given solar elevation form two families of hyperbolas with vertexes facing the center of the field. Such isoline drawings constructed from the calculations may be used to determine the limiting values of the heliostat angles during the daily and seasonal course of operation of the heliostat facility.

Tepliakov, D.I.; Aparisi, R.R.

1980-01-01T23:59:59.000Z

122

Cooling Tower Energy Conservation Through Hydraulic Fan Drives  

E-Print Network [OSTI]

Fan Drive Eliminates These Problems from the Drive Train. The electric motor is at ground level; close coupled to a hydraulic pump, filters and oil reservoir. Hydraulic lines bring oil flow to the lightweight hydraulic motor mounted at the fan... Tower Fan Drives Are Many: It removes the hazard of costly fan wrecks and shaft coupling breakage. It eliminates gearbox maintenance, breakdown or replacement. The electric motor is mounted with the reservoir and pump at ground level for ease...

Dickerson, J.

123

A study of a cooling tower with variable packing geometries  

E-Print Network [OSTI]

of the Meohanioal Engineering Department~ for giving generously of his time, advioey and experi ense. STMKRY Three redwood packing styles -- rectangular~ square and triangular, having the same projected, area ? were tested under the same controlled conditions... of this wozk is to study the influence of the paoking geometries on water cooling tower performance oh raoteristics. To fulfill the purpose, thz ee different redwood paoking , . eometz'ies were tested and oompared. These ere z ectangular, square...

Azad, Abul Kalam

2012-06-07T23:59:59.000Z

124

Energy (Cost) Savings by Zero Discharge in Cooling Towers  

E-Print Network [OSTI]

. Relatively clean water may be added directly to the cooling tower basin (see Figure n. Reuse streams containing high suspended solids but of otherwise acceptable quality may be input just before the filters ~n the J The remainingireuse The flowrate..., silica, phos phates, and suspended solids. Other potential foulants and scale-forming species must be controlled by inhibitors or removed by an additional process in the sidestream treatment. Waste streams with scaling and corrosion potential before...

Matson, J. V.; Gardiner, W. M.; Harris, T. G.; Puckorius, P. R.

1982-01-01T23:59:59.000Z

125

Variable Frequency AC Drives for Cooling Tower Energy Efficiency  

E-Print Network [OSTI]

and economics. Automatic fan speed control by sensing cold water temperature is the economic essence of the application of adjustable frequency power to A-C fan motors. 2.2 Cell Partitions In some multi-cell mechanical-draft cooling towers, the isolation... of individual cell air streams is ineffective due to one or more of the following: --Partitions are missing. --Partitions are incomplete. This condition results in temperature control problems. For example, if constant CWT is desired, and no means...

Corey, R. W.

1982-01-01T23:59:59.000Z

126

CONFIGURATION CHANGE PROPOSAL FORM  

Broader source: Energy.gov [DOE]

This form is used for sharing information on Domain Name Server (DNS) changes, new requirements, modifications or enhancements within the DOE Headquarters Programmatic and Office Management Areas.

127

Surface and Tower Meteorological Instrumentation at Atqasuk (METTWR2H) Handbook  

SciTech Connect (OSTI)

The Atqasuk meteorology station (AMET) uses mainly conventional in situ sensors to measure wind speed, wind direction, air temperature, dew point, and humidity mounted on a 10-m tower. It also obtains barometric pressure, visibility and precipitation data from sensors at or near the base of the tower. In addition, a chilled mirror hygrometer (CMH) is located at 1 m for comparison purposes. Temperature and relative humidity (RH) probes are mounted at 2 m and 5 m on the tower.

Ritsche, MT

2006-01-01T23:59:59.000Z

128

An investigation of design alternatives for 328-ft (100-m) tall wind turbine towers.  

E-Print Network [OSTI]

??As wind turbines are continued to be placed at higher elevations, the need for taller wind turbine towers becomes necessary. However, there are multiple challenges (more)

Lewin, Thomas James

2010-01-01T23:59:59.000Z

129

Structural Analyses of Wind Turbine Tower for 3 kW Horizontal Axis Wind Turbine.  

E-Print Network [OSTI]

?? Structure analyses of a steel tower for Cal Poly's 3 kW small wind turbine is presented. First, some general design aspects of the wind (more)

Gwon, Tae gyun (Tom)

2011-01-01T23:59:59.000Z

130

Performance characteristics of an induced draft, counterflow, spray cooling tower  

E-Print Network [OSTI]

V Total mass transfer coefi'icient, pounds of water per hour per square Zoot per pound of vapor per pound of dry air Tower characteristic Number of nozzles used XX SURVEY OF LXTERATUHE The currently accepted theory of heat and mass exchange between... a stream of' water droplets and a stream of unsatu rated air was first proposed by Robinson (8)o in 1MS, and, ln 19S5$ by Waker g Lewi s y and 5!cAdams ( 1 ) . Al so in 1985, -gerlrel (5), using the same basic equations somewhat moxe rigorously...

Jones, Charles Edward

2012-06-07T23:59:59.000Z

131

A study of a cooling tower with variable packing heights  

E-Print Network [OSTI]

I, tower of eight feet by ei, . ht feet section. . W. W. Smith (18) reported in 1&56, his results and con- clusions for mass transfer and resistance to air flow for three redwood packihg styles having essent1ally the same vert1cal projected area, made... the time to ~efinitel. ?; sta. e that the redwood packing of re tangulor section (width-hei~ht ratio '). g(~) is the best packin? typo. 'Ihe field is till open for experimentation with packings of other avail, ble mat- erials and packins f...

Khan, A. M. M. Farid

2012-06-07T23:59:59.000Z

132

Power Towers of String Instantons for N=1 Vacua  

E-Print Network [OSTI]

We provide arguments for the existence of novel hereinafter called poly-instanton corrections to holomorphic couplings in four-dimensional N=1 supersymmetric string compactifications. After refining quantitatively the D-brane instanton calculus for corrections to the gauge kinetic function, we explicitly apply it to the Type I toroidal orbifold defined in arXiv:0710.3080 and compare the results to the proposed heterotic S-dual model. This leads us to the intriguing conclusion that N=1 string vacua feature a power tower like proliferation of instanton corrections.

Ralph Blumenhagen; Maximilian Schmidt-Sommerfeld

2008-03-11T23:59:59.000Z

133

Coagulation chemistries for silica removal from cooling tower water.  

SciTech Connect (OSTI)

The formation of silica scale is a problem for thermoelectric power generating facilities, and this study investigated the potential for removal of silica by means of chemical coagulation from source water before it is subjected to mineral concentration in cooling towers. In Phase I, a screening of many typical as well as novel coagulants was carried out using concentrated cooling tower water, with and without flocculation aids, at concentrations typical for water purification with limited results. In Phase II, it was decided that treatment of source or make up water was more appropriate, and that higher dosing with coagulants delivered promising results. In fact, the less exotic coagulants proved to be more efficacious for reasons not yet fully determined. Some analysis was made of the molecular nature of the precipitated floc, which may aid in process improvements. In Phase III, more detailed study of process conditions for aluminum chloride coagulation was undertaken. Lime-soda water softening and the precipitation of magnesium hydroxide were shown to be too limited in terms of effectiveness, speed, and energy consumption to be considered further for the present application. In Phase IV, sodium aluminate emerged as an effective coagulant for silica, and the most attractive of those tested to date because of its availability, ease of use, and low requirement for additional chemicals. Some process optimization was performed for coagulant concentration and operational pH. It is concluded that silica coagulation with simple aluminum-based agents is effective, simple, and compatible with other industrial processes.

Nyman, May Devan; Altman, Susan Jeanne; Stewart, Tom

2010-02-01T23:59:59.000Z

134

Sloped-collector solar updraft tower power plant performance  

Science Journals Connector (OSTI)

Abstract A mathematical model describing fluid flow, heat transfer and pressure distribution inside a sloped-collector solar updraft tower power plant (SCSUTPP) is presented by assuming a steady compressible flow. Compared to conventional horizontal-collector solar updraft tower power plants (HCSUTPPs), the performance of SCSUTPP is comprehensively studied based on the mathematical model. The power outputs for SCSUTPP and HCSUTPP using the essential expression of driving force are respectively compared with those using the driving force expressions containing no integral, as proposed in literature. Results show that the expression containing no integral is accurate for HCSUCPP based on a compressible fluid model. The expression containing no integral is not accurate for predicting the driving force of SCSUTPP based on an incompressible fluid model when no variation of the atmospheric density with heights and no variation of difference of the atmospheric density and the density of the current inside the short SUT with heights are assumed. The gravitational effect has to be considered for predicting the SCSUTPP performance. The results show that the pressure potential and the power production of an SCSUCPP with a collector of 848m height and a vertical SUT 123m high lies between those for two \\{HCSUCPPs\\} respectively with vertical \\{SUTs\\} 547m and 971m high. This work lays a good foundation for accurate predication of potential power produced from SCSUTPP.

Xinping Zhou; Shuo Yuan; Marco Aurlio dos Santos Bernardes

2013-01-01T23:59:59.000Z

135

Probabilistic Analysis of Power Tower Systems to Achieve Sunshot Goals  

Science Journals Connector (OSTI)

Abstract The U.S. Department of Energy's (DOE) SunShot goal seeks to reduce the levelized cost of energy (LCOE) for solar energy technologies to $0.06/kWh. A number of cost and technical performance targets for various concentrating solar power (CSP) components have been issued by the DOE to meet the SunShot goals for CSP. This paper presents probabilistic analyses of the LCOE for a 100 \\{MWe\\} power tower system with inherent cost and performance uncertainties. Previous results show that while CSP systems are likely to meet the cost target necessary to compete broadly in U.S. markets, there is a very low probability of reaching an LCOE of $0.06/kWh if parameter uncertainty distributions are used that range from current cost and performance values to the current DOE targets. This work investigates additional parameter distributions using new cost and technical targets to determine performance and cost scenarios for power tower systems that yield finite probabilities of achieving $0.06/kWh. Starting with the baseline uncertainty distributions, the minimum (or maximum) value for each uncertain parameter was improved by ?50% and ?75%. Results show that the probability of achieving an LCOE of $0.06/kWh increases to 15% and 46%, respectively, with these new cost and technical targets.

C. Ho; M. Mehos; C. Turchi; M. Wagner

2014-01-01T23:59:59.000Z

136

Firearms Modification List  

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

FIREARMS MODIFICATION LIST FIREARMS MODIFICATION LIST U.S. DEPARTMENT OF ENERGY Office of Health, Safety and Security AVAILABLE ONLINE AT: INITIATED BY: http://www.hss.energy.gov Office of Health, Safety and Security Notices This document is intended for the exclusive use of elements of the Department of Energy (DOE), to include the National Nuclear Security Administration, their contractors, and other government agencies/individuals authorized to use DOE facilities. DOE disclaims any and all liability for personal injury or property damage due to use of this document in any context by any organization, group, or individual, other than during official government activities. Local DOE management is responsible for the proper execution of firearms-related programs for

137

Organic modification of carbon nanotubes  

Science Journals Connector (OSTI)

The organic modification of carbon nanotubes is a novel research field being developed ... and newest progress of organic modification of carbon nanotubes are reviewed from two aspects: organic covalent modificat...

Luqi Liu; Zhixin Guo; Liming Dai; Daoben Zhu

2002-03-01T23:59:59.000Z

138

DOE to Hold Public Information Meetings on Requested Permit Modifications  

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

Requested Permit Modifications Requested Permit Modifications CARLSBAD, N.M., March 15, 2001 -- The public is invited to comment on requested modifications to the Hazardous Waste Facility Permit for the Waste Isolation Pilot Plant (WIPP). Submittal of the proposed modification request to the New Mexico Environment Department (NMED) by the U.S. Department of Energy (DOE) begins a formal review process that includes a 60-day public comment period and public information meetings. In its submittal, DOE requests five permit changes to modify conditions at the facility. The proposed modifications conform to industry standards for the handling of hazardous materials and would continue to protect the safety of the facility, its employees, and the public. The first two requested changes would eliminate redundant and obsolete training

139

Comparative life cycle assessment of tubular wind towers and foundations Part 2: Life cycle analysis  

Science Journals Connector (OSTI)

Abstract In the first part of the paper the design of tubular towers and respective onshore foundations was addressed. The considered solutions were based on steel, concrete and hybrid steel-concrete tubular towers supporting multi-megawatt turbines of 2, 3.6 and 5MW power with hub heights of 80, 100 and 150m respectively. In this second part of the paper, the life cycle analysis of the designed case studies is performed and conclusions about their environmental impact are drawn. Two different scenarios concerning the lifetime of the towers were established. The first scenario considers 20years lifetime and two different construction methods for the connection of the steel segments, the first based in current technology using flange connections and the second using newly developed friction connections. Assuming equal importance for all environmental categories in this scenario, it may be concluded that for heights up to 100m hybrid towers with friction connections are the most efficient solution. For higher heights, the concrete tower becomes more efficient. The second scenario considers an increased total lifetime of 40years, assuming the reuse of the tower after 20years of operation. In this case, the use of friction connections in steel towers enhances the possibility of dismantling and reusing the tower potentiating much better performance in relation to the environmental category of global warming.

H. Gervsio; C. Rebelo; A. Moura; M. Veljkovic; L. Simes da Silva

2014-01-01T23:59:59.000Z

140

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

Note: This page contains sample records for the topic "tower modifications changing" 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

The Use of Tall Tower Field Data for Estimating Wind Turbine Power Performance , J. Chapman1  

E-Print Network [OSTI]

The Use of Tall Tower Field Data for Estimating Wind Turbine Power Performance A. Swift1 , J wind speed measurements on the TTU WISE 200m and 78m towers. A hypothetical wind turbine is shown. At potential wind turbine sites, it is uncommon to have wind measurements available at multiple heights. Then

Manuel, Lance

142

Well-posedness and controllability of a wind turbine tower model  

Science Journals Connector (OSTI)

......the tower is uniform. Keywords: wind turbine tower; coupled system; SCOLE...aim of this paper is to develop a wind turbine model in the plane of the turbine...force and torque control. Large offshore turbines are subjected to severe......

Xiaowei Zhao; George Weiss

2011-03-01T23:59:59.000Z

143

Shake Table Test on the 1:30 Model Structure of a Large Cooling Tower for Fire Power Plant  

Science Journals Connector (OSTI)

For understanding the seismic behaviour of extra-large scale cooling tower with dimension of 220 meters high and 188 meters in diameter, the shake table tests for its 1:30 (length ratio) tower model were carr...

J. W. Dai; X. R. Weng; Y. Hu

2014-01-01T23:59:59.000Z

144

Modification of the fatty acid composition of bovine tissues  

E-Print Network [OSTI]

MODIFICATION OF THE FATTY ACID COMPOSITION OF BOVINE TISSUES A Thesis by JOYCE CHANG 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 August... 1990 Major Subject: Nutrition MODIFICATION OF THE FATTY ACID COMPOSITION OF BOVINE TISSUES A Thesis by JOYCE CHANG Approved as to style and content by: Stephen B. Smith (Chair of Committee) Barbara O' Brien (Member) aren S. Kubena (Member...

Chang, Joyce

2012-06-07T23:59:59.000Z

145

Thermal performance upgrade of the Arkansas Nuclear One cooling tower: A ``root cause`` analysis approach  

SciTech Connect (OSTI)

The thermal performance efficiency of the natural draft cooling tower at Entergy Operations` 858 MWe Arkansas Nuclear One, Unit 2 was successfully upgraded to 101% of design performance capability in April 1994 as the end result of a unique root-cause analysis of the cooling tower`s long-standing performance deficiencies. Through application of state-of-the-art diagnostic testing methods and computer modeling techniques, Entergy was able to identify and correct air/water maldistribution problems in the 447 foot tall counterflow cooling tower at minimal cost. Entergy estimates that the savings realized, as a result of the 1.2 F reduction in cooling tower outlet water temperature, will pay for the thermal upgrade project in approximately 14 months.

Liffick, G.W. [Entergy Operations, Inc., Russellville, AR (United States); Cooper, J.W. Jr. [John Cooper and Associates, Tampa, FL (United States)

1995-10-01T23:59:59.000Z

146

Coupled dynamics of a tower with an elevated wave tank. Part 1: Equations of motion and eigenoscillations  

E-Print Network [OSTI]

Coupled dynamics of a tower with an elevated wave tank. Part 1: Equations of motion problem is derived to describe coupled dynamics of a tower with an elevated tank on the tower top, elevated tanks, Ritz'-Treftz method 1. INTRODUCTION Modeling the dynamic behavior of elevated liquid

147

Zoning for Small Wind: The Importance of Tower Height  

Wind Powering America (EERE)

1 1 Zoning for Small Wind: The Importance of Tower Height An ASES Small Wind Webinar Mick Sagrillo-Wisconsin's Focus on Energy © 2008 by Mick Sagrillo 2 Definitions: rotor L&S Tech. Assoc., Inc. Rotor = "collector" for a wind system 3 Definitions: wind * Wind = the 'fuel' * Wind has two 'components' - Quantity = wind speed (velocity or V) - Quality = 'clean' flowing wind 4 Quantity * = average annual wind speed * Climate, not weather * Akin to annual average sun hours for PV or head and flow for hydro * Wind speed increases with height above ground... * ...Due to diminished ground drag (friction) 5 Power in the wind V³ * Wind speed = V * Power available is proportional to wind speed x wind speed x wind speed - or P ~ V x V x V - or P ~ V ³ * Therefore, 10% V = 33% P * Lesson !

148

Solar two: A molten salt power tower demonstration  

SciTech Connect (OSTI)

A consortium of United States utility concerns led by the Southern California Edison Company (SCE) is conducting a cooperative project with the US Department of Energy (DOE), Sandia National Laboratories, and industry to convert the 10-MW Solar One Power Tower Pilot Plant to molten nitrate salt technology. The conversion involves installation of a new receiver, a new thermal storage system, and a new steam generator; it utilizes Solar One`s heliostat field and turbine generator. Successful operation of the converted plant, called Solar Two, will reduce economic risks in building initial commercial power tow projects and accelerate the commercial acceptance of this promising renewable energy technology. The estimated cost of Solar Two, including its three-year test period, is $48.5 million. The plant will begin operation in early 1996.

Tyner, C.E. [Sandia National Labs., Albuquerque, NM (United States); Sutherland, J.P. [Southern California Edison, Rosemead, CA (United States); Gould, W.R. Jr. [Bechtel Corp., San Francisco, CA (United States)

1995-08-01T23:59:59.000Z

149

The Cryogenic Dark Matter Search: First 5-Tower Data and Improved Understanding of Ionization Collection  

SciTech Connect (OSTI)

The Cryogenic Dark Matter Search (CDMS) is searching for Weakly Interacting Massive Particles (WIMPs) with cryogenic particle detectors. These detectors have the ability to discriminate between nuclear recoil candidate and electron recoil background events by collecting both phonon and ionization energy from recoils in the detector crystals. The CDMS-II experiment has completed analysis of the first data runs with 30 semiconductor detectors at the Soudan Underground Laboratory, resulting in a world leading WIMP-nucleon spin-independent cross section limit for WIMP masses above 44 GeV/c{sup 2}. As CDMS aims to achieve greater WIMP sensitivity, it is necessary to increase the detector mass and discrimination between signal and background events. Incomplete ionization collection results in the largest background in the CDMS detectors as this causes electron recoil background interactions to appear as false candidate events. Two primary causes of incomplete ionization collection are surface and bulk trapping. Recent work has been focused on reducing surface trapping through the modification of fabrication methods for future detectors. Analyzing data taken with test devices has shown that hydrogen passivation of the amorphous silicon blocking layer worsens surface trapping. Additional data has shown that the iron-ion implantation used to lower the critical temperature of the tungsten transition-edge sensors causes a degradation of the ionization collection. Using selective implantation on future detectors may improve ionization collection for events near the phonon side detector surface. Bulk trapping is minimized by neutralizing ionized lattice impurities. Detector investigations at testing facilities and in situ at the experimental site have provided methods to optimize the neutralization process and monitor running conditions to maintain full ionization collection. This work details my contribution to the 5-tower data taking, monitoring, and analysis effort as well as the SuperCDMS detector development with the focus on monitoring and improving ionization collection in the detectors.

Bailey, Catherine N.; /Case Western Reserve U.

2010-01-01T23:59:59.000Z

150

Operating characteristics of a spray tower for cooling gas at moderate temperatures  

E-Print Network [OSTI]

of multiport gas burners was placed. The top of the tower was fitted with an adapter, a square duct elbow and a reducing duct tying the top of the tower to a cyclone separator. A circular 12-inch elbow out of the top of the cyclone separator led to a venturi..., in the inlet-gas 11 stream, in the outlet-gas stream and in the ventur1. Wet bulb tempera- tures were obtained at top of tower and in the venturi by mercury-column thermometers fitted with wicks. Water-and gas-flow rates were measured by calibrated...

Legler, Bobby

2012-06-07T23:59:59.000Z

151

Improvement of risk estimate on wind turbine tower buckled by hurricane  

E-Print Network [OSTI]

Wind is one of the important reasonable resources. However, wind turbine towers are sure to be threatened by hurricanes. In this paper, method to estimate the number of wind turbine towers that would be buckled by hurricanes is discussed. Monte Carlo simulations show that our method is much better than the previous one. Since in our method, the probability density function of the buckling probability of a single turbine tower in a single hurricane is obtained accurately but not from one approximated expression. The result in this paper may be useful to the design and maintenance of wind farms.

Li, Jingwei

2013-01-01T23:59:59.000Z

152

Modification No. M074  

National Nuclear Security Administration (NNSA)

No. M074 No. M074 Page 2 of 2 BWXT Pantex, LLC Contract No. DE-AC-04AL:66620 1. Appendix D, "Key Personnel," dated October 13, 2003, that is currently in Section J of the Contract is hereby deleted in its entirety and replaced with Appendix D, "Key Personnel," dated August 23, 2004 (Attachment 1 of this Modification). 2. Section C of the Contract is modified to add paragraph 6.5, "Workers Compensation Matters ." This paragraph is stated below in its entirety. 6.5 Workers Compensation Matters The Contractor may, from time to time, be directed by the Contracting Officer to manage certain Workers Compensation Matters arising out of the operations of other plants within the Weapons Complex owned by the Department of Energy or its predecessor agencies and managed by the

153

BREN Tower comes tumbling down as world record is set | National Nuclear  

National Nuclear Security Administration (NNSA)

BREN Tower comes tumbling down as world record is set | National Nuclear BREN Tower comes tumbling down as world record is set | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > BREN Tower comes tumbling down as world ... BREN Tower comes tumbling down as world record is set Posted By Office of Public Affairs NNSA Blog Some 345 tons of steel came tumbling down yesterday as a world

154

Lab Helps FAA Build Energy-Efficient Control Towers | Department of Energy  

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

Lab Helps FAA Build Energy-Efficient Control Towers Lab Helps FAA Build Energy-Efficient Control Towers Lab Helps FAA Build Energy-Efficient Control Towers April 23, 2010 - 10:57am Addthis With help from the Pacific Northwest National Laboratory and its subcontractor, Redhorse Corporation, the agency that keeps our country's airports running is bolstering its energy efficiency. The Federal Aviation Administration is developing building plans that save energy - and money - at five airports in the western U.S. Government agencies are required by law to audit their buildings, so the FAA saw some Recovery Act funding as an opportunity to help fund its energy audits. Air traffic control towers are a vital service for travelers, keeping air traffic free of accidents. Their accompanying base buildings house administrative offices and support systems.

155

Wind tunnel simulation of wind effect on a group of high Cooling towers  

Science Journals Connector (OSTI)

Aerodynamic interference between high cooling towers in the atmospheric boundary layer (ABL) and uniform flow has been discussed. For the 1/1000 ABL model set up in the 2.25m low speed wind tunnel at Peking Unive...

Yan Dachun; Li Chenxin

1987-02-01T23:59:59.000Z

156

Beyond the ivory tower : in search of a new form for campus-community relationships  

E-Print Network [OSTI]

The terms "ivory tower" and "town-gown" have long been used to characterize the relationship between institutions of higher education and the communities in which they reside. While these adversarial phrases reflect the ...

Bowman, Anne (Anne Renee)

2011-01-01T23:59:59.000Z

157

The Binary Cooling Tower Process: An Energy Conserving Water Reuse Technology  

E-Print Network [OSTI]

The Binary Cooling Tower (BCT) harnesses cooling system waste heat to accomplish concentration of waste and process streams. The BCT can also be integrated to isolate and improve the efficiency of critical cooling loops. This paper describes the BCT...

Lancaster, R. L.; Sanderson, W. G.; Cooke, R. L., Jr.

1981-01-01T23:59:59.000Z

158

WATTS TOWERS: THE EFFECTS OF THERMAL CYCLES ON THE FORMATION AND BEHAVIOR OF CRACKS  

E-Print Network [OSTI]

to make lasting repairs to the Watts Towers. 15 REFERENCES [1] LSTC. "LS-DYNA KEYWROD MANUAL." DYNA Support. Livermore Software Technology Corporation, n.d. Web. 5 Apr. 2013.

Spencer, Matthew T

2013-02-06T23:59:59.000Z

159

Microsoft Word - CX-Driscoll-Naselle-TowerMove-FY13_WEB.doc  

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

3 REPLY TO ATTN OF: KEPR-4 SUBJECT: Environmental Clearance Memorandum Stacie Hensley Project Manager - TEP-TPP-4 Proposed Action: Driscoll-Naselle No. 1 Tower Relocation Project...

160

"BECAUSE SOME STORIES DO LIVE FOREVER": STEPHEN KING'S THE DARK TOWER SERIES AS MODERN ROMANCE  

E-Print Network [OSTI]

Stephen King's Dark Tower series is a seven-volume work that contains elements from myths, fairy tales, American westerns, legends, popular culture, Gothic literature, and medieval romance. Few scholars have engaged with ...

McMurray, Rachel Elizabeth

2012-05-31T23:59:59.000Z

Note: This page contains sample records for the topic "tower modifications changing" 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

Data Center Economizer Cooling with Tower Water; Demonstration of a Dual Heat Exchanger Rack Cooling Device  

E-Print Network [OSTI]

LBNL-XXXXX Data Center Economizer Cooling with Tower Water;included a water- side economizer. This model estimated theand without a water-side economizer and including or not

Greenberg, Steve

2014-01-01T23:59:59.000Z

162

Exquisite corpse: a tower for the public in the era of exhausted modernity  

E-Print Network [OSTI]

Towers in Manhattan, especially in business areas, have historically used a single overarching system in order to visualize images of their corporate identity and immerse the public in the image of development. While using ...

Jang, Sungwoo

2012-01-01T23:59:59.000Z

163

Meteorological Impacts of the Cooling Tower of the Goesgen Nuclear Power Plant  

Science Journals Connector (OSTI)

The main meteorological effect due to the Gsgen cooling tower is, in fact, the reduction ... near vicinity (12 km) of the power station. A network of five cinecameras provides ... on 23 points in the vicinity o...

Daniel A. Schneiter

1987-01-01T23:59:59.000Z

164

BREN Tower comes tumbling down as world record is set | National Nuclear  

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

BREN Tower comes tumbling down as world record is set | National Nuclear BREN Tower comes tumbling down as world record is set | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > BREN Tower comes tumbling down as world ... BREN Tower comes tumbling down as world record is set Posted By Office of Public Affairs NNSA Blog Some 345 tons of steel came tumbling down yesterday as a world

165

Times Square Buildings Cond Nast Building Reuters Building Ernst & Young Building Times Square Tower  

Science Journals Connector (OSTI)

NEW YORKS Urban Development Corporations plan for Times Square called for four antiurbanistic office towers by Philip Johnson and John Burgee to stand guard like cops on the beat over what was viewed as a sq...

2005-01-01T23:59:59.000Z

166

24 M meteorological tower data report period: January--December, 1994  

SciTech Connect (OSTI)

This report was prepared by the Desert Research Institute (DRI) for the U.S. Department of Energy (DOE). It summarizes meteorological data collected at the 24 meter tower at the Nevada Test Site Hazardous Material Spill Center (HAZMAT) located at Frenchman Flat near Mercury, Nevada, approximately 75 miles northwest of Las Vegas, Nevada. The tower was originally installed in July, 1993 to characterize baseline conditions for an EPA sponsored experimental research program at the HAZMAT.

Freeman, D.; Bowen, J.; Egami, R. [and others] [and others

1997-08-01T23:59:59.000Z

167

Vertical sampling flights in support of the 1981 ASCOT cooling tower experiments: field effort and data  

SciTech Connect (OSTI)

During the month of August 1981, three nights of experimental sampling of tracers released into the cooling tower plume of a geothermal power plant were conducted. In these experiments a tethered balloon was used to lift a payload so as to obtain vertical profiles of the cooling tower plume and the entrained tracers. A description of the equipment used, the field effort and the data acquired are presented here.

Gay, G.T.

1982-03-01T23:59:59.000Z

168

Surface and Tower Meteorological Instrumentation at Barrow (METTWR4H) Handbook  

SciTech Connect (OSTI)

The Barrow meteorology station (BMET) uses mainly conventional in situ sensors mounted at four different heights (2m, 10m, 20m and 40m) on a 40 m tower to obtain profiles of wind speed, wind direction, air temperature, dew point and humidity. It also obtains barometric pressure, visibility and precipitation data from sensors at the base of the tower. Additionally, a Chilled Mirror Hygrometer and an Ultrasonic wind speed sensor are located near the 2m level for comparison purposes.

Ritsche, MT

2008-04-01T23:59:59.000Z

169

Performance of molten salt solar power towers in Chile  

Science Journals Connector (OSTI)

Chile is facing important challenges to develop its energy sector. Estimations demonstrate that in its electricity consumption Chile will grow at an annual rate of 4.6% until 2030 despite ongoing efficiency improvements. To satisfy this demand in a sustainable way the national energy policy promotes the integration of novel and clean power generation into the national power mix with special emphasis on concentrated solar power (CSP). The present paper assesses the development of solar-based electricity generation in Chile by CSP achieved by a Solar Power Tower plant (SPT) using molten salt as heat carrier and store. Such SPTs can be installed at different locations in Chile and connected to the main national grid. Results show that each SPT plant can generate around 76 GWh el of net electricity when considering solar irradiation as the sole energy source and at a 16% overall efficiency of the SPT process. For operation in a continuous mode a hybrid configuration with integrated gas backup system increases the generating potential of each SPT to 135 GWh el . A preliminary Levelized Energy Cost (LEC) calculation provides LEC values between 0.15 and 0.18 $/kWh as function of the overall process efficiency and estimated investment cost. Chile's solar irradiation favors the implementation of SPT plants.

G. Cceres; N. Anrique; A. Girard; J. Degrve; J. Baeyens; H. L. Zhang

2013-01-01T23:59:59.000Z

170

Optimal heliostat aiming strategy for uniform distribution of heat flux on the receiver of a solar power tower plant  

Science Journals Connector (OSTI)

Abstract Temperature distribution on the receiver surface of a solar power tower plant is of great importance. High temperature gradients may lead to local hot spots and consequently failure of the receiver. The temperature distribution can be controlled by defining several aiming points on the receiver surface and adjusting the heliostats accordingly. In this paper, a new optimization algorithm which works based on the principles of genetic algorithm is developed to find the optimal flux distribution on the receiver surface. The objective is to minimize the standard deviation of the flux density distribution by changing the aiming points of individual heliostats. Flux distribution of each heliostat is found by using the HFLCAL model [1], which is validated against experimental data. The results show that after employing the new algorithm the maximum flux density is reduced by an order of magnitude. The effects of number of aiming points and size of the aiming surface on the flux density distribution are investigated in detail.

Saeb M. Besarati; D. Yogi Goswami; Elias K. Stefanakos

2014-01-01T23:59:59.000Z

171

IDIQ DOE ESPC Contract Modifications  

Office of Energy Efficiency and Renewable Energy (EERE)

Documents display Amendment of Solicitation/Modification of Contract forms for indefinite-delivery, indefinite-quantity (IDIQ) U.S. Department of Energy (DOE) energy savings performance contracts (ESPCs).

172

BNI Contract Modifications - Hanford Site  

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

CH2M Contract CH2M Contract Modifications ATL Contract (through mod 040) DOE-ORP Contracting Officers DOE ORP Contracting Officer Representatives DOE ORP Purchase Card Buyers...

173

WIPP Hazardous Waste Permit - Approved Modifications  

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

Modification to Add South Access Road for Transportation of TRU Mixed Waste dated March 17, 2011 Class 1 Permit Modification Notification to Revise TRU-Pact III Management...

174

A new design of wind tower for passive ventilation in buildings to reduce energy consumption in windy regions  

Science Journals Connector (OSTI)

Abstract In todays world, the significance of energy and energy conservation is a common knowledge. Wind towers can save the electrical energy used to provide thermal comfort during the warm months of the year, especially during the peak hours. In this paper, we propose a new design for wind towers. The proposed wind towers are installed on top of the buildings, in the direction of the maximum wind speed in the region. If the desired wind speed is accessible in several directions, additional wind towers can be installed in several positions. The proposed wind tower can also rotate and set itself in the direction of the maximum wind speed. In the regions where the wind speed is low, to improve the efficiency of the system a solar chimney or a one-sided wind tower can be installed in another part of the building in the opposite direction. Using transparent materials in the manufacturing of the proposed wind towers improves the use of natural light inside the building. The major advantage of wind towers is that they are passive systems requiring no energy for operation. Also, wind towers reduce electrical energy consumption and environmental pollution.

A.R. Dehghani-sanij; M. Soltani; K. Raahemifar

2015-01-01T23:59:59.000Z

175

24 m meteorological tower data report period: January through December, 1995  

SciTech Connect (OSTI)

This report was prepared by the Desert Research Institute (DRI) for the US Department of Energy (DOE). It summarizes meteorological data collected at the 24 meter tower at the Nevada Test Site Hazardous Material Spill Center (HAZMAT) located at Frenchman Flat near Mercury, Nevada, approximately 75 miles northwest of Las Vegas, Nevada. The tower was originally installed in July, 1993 to characterize baseline conditions for an EPA sponsored experimental research program at the HAZMAT. A previous report reported monitoring results for 1994. This report presents results of the monitoring for January--December, 1995, providing: a status of the measurement systems (including any quality assurance activities) during the report period and a summary of the meteorological conditions at the HAZMAT during the report period. The scope of the report is limited to summary data analyses and does not include extensive meteorological analysis. The tower was instrumented at 8 levels. Wind speed, wind direction, and temperature were measured at all 8 levels. Relative humidity was measured at 3 levels. Solar and net radiation were measured at 2 meters above the ground. Barometric pressure was measured at the base of the tower and soil temperature was measured near the base of the tower.

Freeman, D.; Bowen, J.B.; Egami, R.; Coulombe, W.; Crow, D.; Cristani, B.; Schmidt, S.

1997-12-01T23:59:59.000Z

176

Assessing the threat to montane biodiversity from discordant shifts in temperature and precipitation in a changing climate  

E-Print Network [OSTI]

changes associated with anthropogenic climate modification may impact species? distributions, extinction

McCain, Christy M.

177

Microsoft Word - CX-Marion and Sand Springs Substation Towers Revised.doc  

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

KEC-4 KEC-4 SUBJECT: Environmental Clearance Memorandum Dave Tripp Project Manager - TEP-CSB-1 Proposed Action: Marion and Sand Springs Substations Radio Tower Projects Budget Information: Work Orders 00243411 and 00243190; Task 3 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.19 Siting, construction, and operation of microwave and radio communication towers and associated facilities... Location: Marion and Deschutes counties, Oregon Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to install new radio towers at the Marion Substation and Sand Springs Substation communication sites in Oregon. BPA must vacate radio frequencies in the 1710-1755MHz band to comply with a Federal law mandating reallocation of

178

Lawrence Livermore National Laboratory (LLNL) Experimental Test Site (Site 300) Salinity Evaluation and Minimization Plan for Cooling Towers and Mechanical Equipment Discharges  

SciTech Connect (OSTI)

This document was created to comply with the Central Valley Regional Water Quality Control Board (CVRWQCB) Waste Discharge Requirement (Order No. 98-148). This order established new requirements to assess the effect of and effort required to reduce salts in process water discharged to the subsurface. This includes the review of technical, operational, and management options available to reduce total dissolved solids (TDS) concentrations in cooling tower and mechanical equipment water discharges at Lawrence Livermore National Laboratory's (LLNL's) Experimental Test Site (Site 300) facility. It was observed that for the six cooling towers currently in operation, the total volume of groundwater used as make up water is about 27 gallons per minute and the discharge to the subsurface via percolation pits is 13 gallons per minute. The extracted groundwater has a TDS concentration of 700 mg/L. The cooling tower discharge concentrations range from 700 to 1,400 mg/L. There is also a small volume of mechanical equipment effluent being discharged to percolation pits, with a TDS range from 400 to 3,300 mg/L. The cooling towers and mechanical equipment are maintained and operated in a satisfactory manner. No major leaks were identified. Currently, there are no re-use options being employed. Several approaches known to reduce the blow down flow rate and/or TDS concentration being discharged to the percolation pits and septic systems were reviewed for technical feasibility and cost efficiency. These options range from efforts as simple as eliminating leaks to implementing advanced and innovative treatment methods. The various options considered, and their anticipated effect on water consumption, discharge volumes, and reduced concentrations are listed and compared in this report. Based on the assessment, it was recommended that there is enough variability in equipment usage, chemistry, flow rate, and discharge configurations that each discharge location at Site 300 should be considered separately when deciding on an approach for reducing the salt discharge to the subsurface. The smaller units may justify moderate changes to equipment, and may benefit from increased cleaning frequencies, more accurate and suitable chemical treatment, and sources of make up water and discharge re-use. The larger cooling towers would be more suitable for automated systems where they don't already exist, re-circulation and treatment of blow down water, and enhanced chemical dosing strategies. It may be more technically feasible and cost efficient for the smaller cooling towers to be replaced by closed loop dry coolers or hybrid towers. There are several potential steps that could be taken at each location to reduce the TDS concentration and/or water use. These include: sump water filtration, minimization of drift, accurate chemical dosing, and use of scale and corrosion coupons for chemical calibration. The implementation of some of these options could be achieved by a step-wise approach taken at two representative facilities. Once viable prototype systems have been proven in the field, systematic implementation should proceed for the remaining systems, with cost, desired reduction, and general feasibility taken into consideration for such systems.

Daily III, W D

2010-02-24T23:59:59.000Z

179

Modeling and Simulation of Wind Shear and Tower Shadow on Wind Turbines  

Science Journals Connector (OSTI)

Abstract This paper focuses on the modeling and simulation in Matlab/Simulink of the effects of wind shear and tower shadow in a three bladed, variable-speed wind turbine system. The study of the mechanical stress, the mitigation of the torque oscillations and the improvement of the aerodynamic efficiency below rated wind speed, can be attained with a proper modeling of the turbine system. This paper is a contribution on the study of the effects of wind shear and tower shadow, often approximated or neglected, that have to be properly understood, considered and modeled in order to get a better performance of the turbine system.

H. Sintra; V.M.F. Mendes; R. Melcio

2014-01-01T23:59:59.000Z

180

Computer Simulation of Cooling Effect of Wind Tower on Passively Ventilated Building  

E-Print Network [OSTI]

, the placement of the wind tower opening and air inlets into the building should be considered. Finally, the model should include energy storage effects in the thermal mass of the building. Perhaps the best way to incorporate all of these issues into a..., the placement of the wind tower opening and air inlets into the building should be considered. Finally, the model should include energy storage effects in the thermal mass of the building. Perhaps the best way to incorporate all of these issues into a...

Seryak, J.; Kissock, J. K.

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower modifications changing" 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

Application of the antenna theory model to a tall tower struck by Behzad Kordi,1,2  

E-Print Network [OSTI]

on the lightning flash parameters. However, the presence of a vertically extended and grounded strike objectApplication of the antenna theory model to a tall tower struck by lightning Behzad Kordi,1] The interaction of lightning with the 553-m high CN Tower in Toronto is modeled using the antenna theory model

Florida, University of

182

Manuscript received for review, February 2008; accepted for publication, SIX CENTURIES OF FIRE HISTORY AT DEVILS TOWER  

E-Print Network [OSTI]

Willson Great Plains CESU, 515 Hardin Hall University of Nebraska­Lincoln 3310 Holdrege, Lincoln, NE 68583­climate relationships derived from Devils Tower, the Black Hills, and other Great Plains sites suggest that Devils Tower and vegetation assessments suggest that conditions are departed from historical conditions. In the Great Plains

Stambaugh, Michael C

183

Control of the flux distribution on a solar tower receiver using an optimized aiming point strategy: Application to THEMIS solar tower  

Science Journals Connector (OSTI)

Abstract Life time of components is one of the technological bottle-necks in the development of solar tower power plant technology. The receiver, which is subjected to high and variable concentrated solar flux density is particularly affected: High, variable and non-homogeneous solar flux on the solar receiver walls results in strong stresses because of high temperatures, thermal shocks and temperature gradient that contribute to the reduction of the life time of this key component. This work aims to present an open loop approach to control the flux density distribution delivered on a flat plate receiver for a solar power tower. Various distributions of aiming points on the aperture of the receiver are considered. The flux density distribution on the aperture is simulated by a computer code. A specific neighborhood is defined for the TABU optimization meta-heuristic according to the size of the image of each individual heliostat. This modified algorithm is implemented to select the best aiming point for each heliostat. This approach has been validated using the example of THEMIS solar power tower in Targasonne, France.

Adrien Salom; Fabien Chhel; Gilles Flamant; Alain Ferrire; Frederik Thiery

2013-01-01T23:59:59.000Z

184

A statistician's view of weather modification technology (A Review)  

Science Journals Connector (OSTI)

...came from L. 0. Grant, the leader in the performance of the two...involving several private companies and a consultant, A. Court...precipitation data. The repeated changes in the definition of "suitable...Panel on'Weather and Climate Modification (1966) "Weather...

Jerzy Neyman

1977-01-01T23:59:59.000Z

185

A method to avoid negative damped low frequent tower vibrations for a floating, pitch controlled wind turbine  

Science Journals Connector (OSTI)

Wind turbines mounted on floating platforms is subjected to completely different and soft foundation properties, than seen for onshore wind turbines. This leads to much lower natural frequencies, related to the rigid body motion of the structure which again leads to an unfavorable coupling between tower motion and the pitch control of the turbine. The tower motion in combination with the aerodynamics and the pitch control will be poor or even negative damped which causes large transient loads if not accounted for. The reason for this low damping is shown to be caused by a too fast pitch regulation compared to the motion of the tower or in other words the lowest control-structure natural frequency must be lower than the lowest critical tower frequency. A control algorithm is presented including the tuning method (pole-placement) to ensure the desired control frequency which provides stable tower vibration modes.

T J Larsen; T D Hanson

2007-01-01T23:59:59.000Z

186

MODIFICATION DE LA CHAMBRE DE COMPENSATION D'UN RESPIROMTRE A PRESSION CONSTANTE  

E-Print Network [OSTI]

MODIFICATION OF THE COMPENSATION CHAMBER OF A CONSTANT PRESSURE RESPIROMETER A change was madeNOTE MODIFICATION DE LA CHAMBRE DE COMPENSATION D'UN RESPIROM?TRE A PRESSION CONSTANTE Andrée PIHET compensation (appelée aussi fiole de référence) qui élimine les effets des changements barométriques et

Boyer, Edmond

187

Gaskell Sun Tower and 2 others Solar Power Plant | Open Energy Information  

Open Energy Info (EERE)

Gaskell Sun Tower and 2 others Solar Power Plant Gaskell Sun Tower and 2 others Solar Power Plant Jump to: navigation, search Name Gaskell Sun Tower and 2 others Solar Power Plant Facility Gaskell Sun Tower and 2 others Sector Solar Facility Type Concentrating Solar Power Facility Status Proposed Developer NRG Energy/eSolar Location Kern County, California Coordinates 35.4937274°, -118.8596804° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.4937274,"lon":-118.8596804,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

188

Stress resultants in hyperboloid cooling tower shells subjected to foundation settlement  

SciTech Connect (OSTI)

The effect of differential settlement of columns supporting a natural draught hyperboloid cooling tower on the stress resultants in the tower shell is analyzed using discrete finite element modelling of the shell and the supporting base. The quadrilateral facet shell elements and 3-D beam elements are used to model the shell and the columns respectively. The stress resultants obtained due to an imposed settlement are compared with those reported earlier by other investigators. In the existing literature, the stress resultants are found using the Boussinesq equation to calculate the approximate edge loading (column forces) on the cooling tower shell due to differential settlement. It is shown in the present study that using the Boussinesq solution for the calculation of edge loading may lead to an over-estimation of the column forces and hence the stress resultants. The magnitude of stress resultants is also found to be dependent on the column flexibility. The paper also presents an investigation in which the local amplification of stress resultants in the vicinity of the shell column junction of the cooling towers (stress concentration) due to dead load and foundation settlement is studied. It is shown that the stress concentration can be severe, i.e., up to seven times the average stress resultants for dead load, and up to five times the average stress resultants for the foundation settlement. 28 refs.

Krishna Mohan Rao, S.V.; Appa Rao, T.V.S.R. [CSIR Campus, Madras (India)

1994-08-01T23:59:59.000Z

189

Behavior of Scaled Steel-Concrete Composite Girders and Steel Monopole Towers Strengthened with CFRP  

E-Print Network [OSTI]

Behavior of Scaled Steel-Concrete Composite Girders and Steel Monopole Towers Strengthened with CFRP DAVID SCHNERCH AND SAMI RIZKALLA Cost-effective rehabilitation and/or strengthening of steel. The current research program makes use of new high modulus types of carbon fiber for strengthening steel

190

Top: Rudder Tower is one of 24 Texas A&M buildings undergoing energy efficiency upgrades.  

E-Print Network [OSTI]

Top: Rudder Tower is one of 24 Texas A&M buildings undergoing energy efficiency upgrades. Bottom control energy costs and provide a greener, more energy efficient campus for a more environmentally' building automation system (BAS) will improve energy efficiency and enable better HVAC control in buildings

191

Comparison of linear and nonlinear responses of a compliant tower to random wave forces  

E-Print Network [OSTI]

. Introduction A compliant tower is an offshore structure used in the oil industry as an exploratory, production offshore structure is modeled as a beam undergoing both bending and extension. The beam has a point mass. A quarter of the International Ship and Offshore Structures Congress (ISSC) tension leg platform model

Benaroya, Haym

192

Experimental Study on Energy Efficiency of Heat-source Tower Heat Pump Units in Winter Condition  

Science Journals Connector (OSTI)

Building energy consumption in China has been increasing rapidly. And a small increase in the operation efficiency of the air-conditioning system can substantially decrease it. In this paper a new type heat pump is developed to improve the performance ... Keywords: Heat-source tower, Heat pump, Seasonal energy efficiency ratio(SEER), Hermal properties

Li Nianping; Zhang Wenjie; Wang Lijie; Liu Qiuke; Hu Jinhua

2011-01-01T23:59:59.000Z

193

Blandford MTA Tower Wind Monitoring This document provides information not repeated in the monthly wind monitoring  

E-Print Network [OSTI]

on a regular basis. The logger samples wind speed and direction once every two seconds. These are then combined applicable): wind speed, wind speed standard deviation, wind direction, temperature, and solar insolation. F1 ranges applied for high and low wind speeds. A wind direction standard Blandford MTA Tower Wind

Massachusetts at Amherst, University of

194

Marion Meteorological Tower Wind Monitoring This document provides information not repeated in the monthly wind monitoring  

E-Print Network [OSTI]

. The logger samples wind speed and direction once every two seconds. These are then combined into 10-minute): wind speed, wind speed standard deviation, wind direction, temperature, and solar insolation. F1 > TF1 applied for high and low wind speeds. A wind direction standard Marion Met Tower Wind Monitoring #12

Massachusetts at Amherst, University of

195

Effect of internal stiffening rings and wall thickness on the structural response of steel wind turbine towers  

Science Journals Connector (OSTI)

Abstract In this paper, the structural response of steel tubular wind turbine towers with various design configurations is analysed using FEM modelling. Towers of various heights between 50 and 250m are considered and investigated with three different design options as follows: (i) thick walled tower with internal horizontal stiffening rings, (ii) thick walled tower without stiffening rings and (iii) thin walled tower with stiffening rings. Based on this analysis, weight reduction ratios are examined in relation to the horizontal sway and von Mises stress increase ratios in order to identify a more efficient design approach between reducing the wall thickness and adopting internal stiffeners. All studied design solutions satisfy the strength and serviceability requirements as specified by the design codes of practice. In the final part of paper, the dynamic characteristics of these three types of towers have been examined to obtain the natural frequencies and mode shapes. The studied model ignored the mass of nacelle-rotor system and the wind turbines, namely, only the isolated tower was included. Furthermore, the recommendations to avoid resonance for each height case are proposed.

Y. Hu; C. Baniotopoulos; J. Yang

2014-01-01T23:59:59.000Z

196

Energy conservation potential of surface modification technologies  

SciTech Connect (OSTI)

This report assesses the energy conservation impact of surface modification technologies on the metalworking industries. The energy conservation impact of surface modification technologies on the metalworking industries is assessed by estimating their friction and wear tribological sinks and the subsequent reduction in these sinks when surface modified tools are used. Ion implantation, coatings, and laser and electron beam surface modifications are considered.

Le, H.K.; Horne, D.M.; Silberglitt, R.S.

1985-09-01T23:59:59.000Z

197

Effects of adding wash tower effluent to Ano Liossia landfill to enhance bioreaction c by Olympia Galenianou.  

E-Print Network [OSTI]

A theoretical study was performed on the effects of adding sulfate-rich wash tower effluent from the Athens hospital waste incinerator to the Ano Liossia landfill of Athens. The method of mass balance was used to examine ...

Galenianou, Olympia

2006-01-01T23:59:59.000Z

198

Energy Savings Accomplished by Replacing Steam Ejectors with Electric Driven Vacuum Pumps in Crude Distillation Vacuum Towers  

E-Print Network [OSTI]

The low cost of steam combined with the maintenance free operation of steam ejectors has assured their unquestioned use in providing the necessary vacuum for crude distillation vacuum towers. However, the cost of steam production has risen...

Nelson, R. E.

1982-01-01T23:59:59.000Z

199

The Solar Power Tower Jlich A Solar Thermal Power Plant for Test and Demonstration of Air Receiver Technology  

Science Journals Connector (OSTI)

The open volumetric receiver technology allows the use of air as heat transfer medium at high temperatures in solar thermal power tower plants. It combines porous ceramic ... a strictly modular receiver design. H...

K. Hennecke; P. Schwarzbzl; G. Koll

2009-01-01T23:59:59.000Z

200

Current and future costs for parabolic trough and power tower systems in the US market.  

SciTech Connect (OSTI)

NREL's Solar Advisor Model (SAM) is employed to estimate the current and future costs for parabolic trough and molten salt power towers in the US market. Future troughs are assumed to achieve higher field temperatures via the successful deployment of low melting-point, molten-salt heat transfer fluids by 2015-2020. Similarly, it is assumed that molten salt power towers are successfully deployed at 100MW scale over the same time period, increasing to 200MW by 2025. The levelized cost of electricity for both technologies is predicted to drop below 11 cents/kWh (assuming a 10% investment tax credit and other financial inputs outlined in the paper), making the technologies competitive in the marketplace as benchmarked by the California MPR. Both technologies can be deployed with large amounts of thermal energy storage, yielding capacity factors as high as 65% while maintaining an optimum LCOE.

Turchi, Craig (National Renewable Energy Laboratory, Golden, CO); Kolb, Gregory J.; Mehos, Mark Steven (National Renewable Energy Laboratory, Golden, CO); Ho, Clifford Kuofei

2010-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower modifications changing" 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

Stability and Turbulence in the Atmospheric Boundary Layer: A Comparison of Remote Sensing and Tower Observations  

SciTech Connect (OSTI)

When monitoring winds and atmospheric stability for wind energy applications, remote sensing instruments present some advantages to in-situ instrumentation such as larger vertical extent, in some cases easy installation and maintenance, measurements of vertical humidity profiles throughout the boundary layer, and no restrictions on prevailing wind directions. In this study, we compare remote sensing devices, Windcube lidar and microwave radiometer, to meteorological in-situ tower measurements to demonstrate the accuracy of these measurements and to assess the utility of the remote sensing instruments in overcoming tower limitations. We compare temperature and wind observations, as well as calculations of Brunt-Vaisala frequency and Richardson numbers for the instrument deployment period in May-June 2011 at the U.S. Department of Energy National Renewable Energy Laboratory's National Wind Technology Center near Boulder, Colorado. The study reveals that a lidar and radiometer measure wind and temperature with the same accuracy as tower instruments, while also providing advantages for monitoring stability and turbulence. We demonstrate that the atmospheric stability is determined more accurately when the liquid-water mixing ratio derived from the vertical humidity profile is considered under moist-adiabatic conditions.

Friedrich, K.; Lundquist, J. K.; Aitken, M.; Kalina, E. A.; Marshall, R. F.

2012-01-01T23:59:59.000Z

202

NREL National Wind Technology Center (NWTC): M2 Tower; Boulder, Colorado (Data)  

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

The National Wind Technology Center (NWTC), located at the foot of the Rocky Mountains near Boulder, Colorado, is a world-class research facility managed by NREL for the U.S. Department of Energy. NWTC researchers work with members of the wind energy industry to advance wind power technologies that lower the cost of wind energy through research and development of state-of-the-art wind turbine designs. NREL's Measurement and Instrument Data Center provides data from NWTC's M2 tower which are derived from instruments mounted on or near an 82 meter (270 foot) meteorological tower located at the western edge of the NWTC site and about 11 km (7 miles) west of Broomfield, and approximately 8 km (5 miles) south of Boulder, Colorado. The data represent the mean value of readings taken every two seconds and averaged over one minute. The wind speed and direction are measured at six heights on the tower and air temperature is measured at three heights. The dew point temperature, relative humidity, barometric pressure, totalized liquid precipitation, and global solar radiation are also available.

Jager, D.; Andreas, A.

203

CMS 3.4 Temporary Changes, 4/10/95 | Department of Energy  

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

experiments. The Facility Representative reviews the status of temporary modifications, distribution of temporary procedure changes, and examines tests or experiments....

204

Fuel Modification t Facilitate Future Combustion Regimes? | Department...  

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

Modification t Facilitate Future Combustion Regimes? Fuel Modification t Facilitate Future Combustion Regimes? 2005 Diesel Engine Emissions Reduction (DEER) Conference...

205

Radiation Damage/Materials Modification  

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

behind this change in phase structure is critical to predicting the impact on dimensional stability of these alloys. Figure 2: Micrographs from transmission electron microscropy...

206

Nanomedicine and Body Modification: Critical Perspectives  

Science Journals Connector (OSTI)

This chapter examines nanomedicine in relation to body modification, in particular ... is cosmetic surgery. It asks what possibilities nanomedicine might offer patients seeking cosmetic enhancement, and...nanomedicine

Melanie Latham

2014-01-01T23:59:59.000Z

207

Penser Contract Modifications (EM0003383) - Hanford Site  

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

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

208

Optimizing Cooling Tower Performance- Refrigeration Systems, Chemical Plants, and Power Plants all Have A Resource Quietly Awaiting Exploitation-Cold Water!!  

E-Print Network [OSTI]

OPTIMIZING COOLING TOWER PERFORMANCE REFRIGERATION SYSTEMS, CHEMICAL PLANTS, AND POWER PLANTS ALL HAVE A RESOURCE QUIETLY AWAITING EXPLOITATION - COLD WATER!! ROBERT BURGER President Burger and Associates, Inc. Dallas, Texas Cooling... towers, because of their seeming simplicity, are usually orphans of the facilities operation. We are all aware that cooling towers are the step-children of the chemical process plant, electric power generating station, and refrigeration system...

Burger, R.

209

Low Wind Speed Technology Phase I: Evaluation of Design and Construction Approaches for Economical Hybrid Steel/Concrete Wind Turbine Towers; BERGER/ABAM Engineers Inc.  

SciTech Connect (OSTI)

This fact sheet describes a subcontract with BERGER/ABAM Engineers Inc. to study the economic feasibility of concrete and hybrid concrete/steel wind turbine towers.

Not Available

2006-03-01T23:59:59.000Z

210

Thermal Conductivity Enhancement of High Temperature Phase Change Materials for Concentrating Solar Power Plant Applications  

E-Print Network [OSTI]

been heated at solar collection tower, at the temperatureIn the receiver tower, the collected solar radiation heatsfocus and send solar radiation to a receiver tower.

Roshandell, Melina

2013-01-01T23:59:59.000Z

211

A Single Tower Configuration of the Modular Gamma Box Counter System - 13392  

SciTech Connect (OSTI)

Canberra's Standard Gamma Box Counter System is designed to perform accurate quantitative assays of gamma emitting nuclides for a wide range of large containers including B-25 crates and ISO shipping containers. Using a modular building-block approach, the system offers tremendous flexibility for a variety of measurement situations with wide ranges of sample activities and throughput requirements, as well as the opportunity to modify the configuration for other applications at a later date. The typical configuration consists of two opposing towers each equipped with two high purity germanium detectors, and an automated container trolley. This paper presents a modified configuration, consisting of a single tower placed inside a measurement trailer with three detector assemblies, allowing for additional vertical segmentation as well as a viewing a container outside the trailer through the trailer wall. An automatic liquid nitrogen fill system is supplied for each of the detectors. The use of a forklift to move the container for horizontal segmentation is accommodated by creating an additional operational and calibration set-up in the NDA 2000 software to allow for the operator to rotate the container and assay the opposite side, achieving the same sensitivity as a comparable two-tower system. This Segmented Gamma Box Counter System retains the core technologies and design features of the standard configuration. The detector assemblies are shielded to minimize interference from environmental and plant background, and are collimated to provide segmentation of the container. The assembly positions can also be modified in height and distance from the container. The ISOCS calibration software provides for a flexible approach to providing the calibrations for a variety of measurement geometries. The NDA 2000 software provides seamless operation with the current configuration, handling the data acquisition and analysis. In this paper, an overview of this system is discussed, along with the measured performance results, calibration methodology and verification, and minimum detectable activity levels. (authors)

Morris, K.; Nakazawa, D.; Francalangia, J.; Gonzalez, H. [Canberra Industries Inc., 800 Research Parkway, Meriden, CT, 06450 (United States)] [Canberra Industries Inc., 800 Research Parkway, Meriden, CT, 06450 (United States)

2013-07-01T23:59:59.000Z

212

Utility-scale Power Tower Solar Systems: Performance Acceptance Test Guidelines  

Science Journals Connector (OSTI)

Abstract Prior to commercial operation, large solar systems in utility-size power plants need to pass performance acceptance tests conducted by the engineering, procurement, and construction (EPC) contractor or owners. In lieu of the present absence of ASME or other international test codes developed for this purpose, the NREL undertook the development of interim Guidelines to provide recommendations for test procedures that can yield results of a high level of accuracy consistent with good engineering knowledge and practice. The Guidelines contained here follow the general approach of the earlier NREL report on parabolic trough collector fields, but in this case are specifically written for power tower solar systems composed of a heliostat (reflector) field directing the sun's rays to a receiver (heat exchanger) on a high central tower. The working fluid in the tower receiver can be molten salt, water/steam, air, CO2, or other suitable fluids, each with its own particular attributes. The fundamental differences between acceptance of a solar power plant and a conventional fossil-fired plant are the inherently transient nature of the energy source and the necessity to use a performance projection model in the acceptance process. Two primary types of test runs are to be conducted. The first the Short-Duration Steady-State Thermal Power Test (Power Test) measures the thermal power output of the solar system under clear-sky conditions over a short period, during which thermal equilibrium and stable steady-state conditions exist, and compares the measured results to performance model projections for those conditions. The second test type the Long-Duration Production (or Reliability) Test (Production Test) is a continuous multi-day energy test that gathers multiple detailed daily thermal energy outputs and compares the results to projections from a performance model. Both clear-sky and partly cloudy conditions are acceptable. Additionally, the functionality of the solar system should be observed with regard to such items as daily startup, normal operation, standby and shutdown.

D. Kearney

2014-01-01T23:59:59.000Z

213

WRPS Contract Modifications - Hanford Site  

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

LAW Design Review foe WTP 266 - Deletion of UB Scope-Phase 1 of 4 265 - Funding-Base Ops, Rocky Flats and Mount Pension, LAW Design Review, and Capital Equipment 264 - Change Order...

214

Recent AGN Observations by the Solar Tower Atmospheric Cherenkov Effect Experiment  

Science Journals Connector (OSTI)

The Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE) is a ground?based atmospheric Cherenkov telescope for the detection of very high energy gamma rays from Galactic and extra?galactic sources. By utilizing the large collection area provided by the solar mirrors of the National Solar Thermal Test Facility in Albuquerque New Mexico STACEE achieves a low energy threshold around 100 GeV for the detection of gamma rays. We briefly describe the STACEE detector and detail recent observations of Active Galactic Nuclei.

J. Kildea; A. Alabiso; D. A. Bramel; J. Carson; C. E. Covault; D. Driscoll; P. Fortin; D. M. Gingrich; D. S. Hanna; A. Jarvis; T. Lindner; R. Mukherjee; C. Mueller; R. A. Ong; R. A. Scalzo; D. A. Williams; J. Zweerink

2005-01-01T23:59:59.000Z

215

A review of "Control of Religious Printing in Early Stuart England." by S. Mutchow Towers  

E-Print Network [OSTI]

attempts to break out of the rigid framework that Dutch iconography imposes. Therefore, the purpose of this book has not entirely become clear. One reason why the book?s purpose remains partly obscure lies in the author?s heavy dependence on texts... tradition of love imagery that the book precisely does not address. S. Mutchow Towers. Control of Religious Printing in Early Stuart England. Woodbridge, U.K.: The Boydell Press, 2003. viii + 296 pp. $75.00. Review by STEVEN MATTHEWS, THE UNIVERSITY...

Steven Matthews

2004-01-01T23:59:59.000Z

216

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE  

E-Print Network [OSTI]

OF AMENDMENT/MODIFICATION," continued. A. Office of Energy Science and Technology: The purpose of this contract.S. Department of Energy Pacific Northwest Site Office Post Office Box 350 Richland, WA 99352 8. NAME AND ADDRESS CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office

217

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE PAGE  

E-Print Network [OSTI]

Purpose of Modification: The Department of Energy (DOE), Office of Science (SC), Pacific Northwest Site Northwest Site Office Post Office Box 350 Richland, WA 99352 7. ADMINISTERED BY (if other than Item 6) CODE/ORDER IS MODIFIED TO REFLECT ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET

218

An evaluation of possible next-generation high temperature molten-salt power towers.  

SciTech Connect (OSTI)

Since completion of the Solar Two molten-salt power tower demonstration in 1999, the solar industry has been developing initial commercial-scale projects that are 3 to 14 times larger. Like Solar Two, these initial plants will power subcritical steam-Rankine cycles using molten salt with a temperature of 565 C. The main question explored in this study is whether there is significant economic benefit to develop future molten-salt plants that operate at a higher receiver outlet temperature. Higher temperatures would allow the use of supercritical steam cycles that achieve an improved efficiency relative to today's subcritical cycle ({approx}50% versus {approx}42%). The levelized cost of electricity (LCOE) of a 565 C subcritical baseline plant was compared with possible future-generation plants that operate at 600 or 650 C. The analysis suggests that {approx}8% reduction in LCOE can be expected by raising salt temperature to 650 C. However, most of that benefit can be achieved by raising the temperature to only 600 C. Several other important insights regarding possible next-generation power towers were also drawn: (1) the evaluation of receiver-tube materials that are capable of higher fluxes and temperatures, (2) suggested plant reliability improvements based on a detailed evaluation of the Solar Two experience, and (3) a thorough evaluation of analysis uncertainties.

Kolb, Gregory J.

2011-12-01T23:59:59.000Z

219

Deposition and corrosion phenomena on aluminum surfaces under deluged dry cooling-tower condisions. Interim report  

SciTech Connect (OSTI)

Deposition and corrosion on aluminum heat exchanger surfaces resulting from deluge in wet/dry cooling towers is simulated in a laboratory Corrosion/Deposition Loop (CDL). Heat exchanger deposition buildup was found to be linearly dependent on concentration factor and number of wet/dry cycles. Deionized water rising after deluge reduced rate of deposition. Laboratory data obtained from CDL relates directly to operation of the Advanced Concepts Test (ACT) demonstration cooling tower. Technology transferable to ACT shows that deposition from supersaturated solution can be effectively controlled by attention to water chemistry, pH, water conditioning, and good heat transfer design. The additional mechanism of deposition by water film evaporation is effectively managed by soft water rinsing and uniform surface wetting. Exposure of a model TRANE surface (the ACT wet/dry exchanger) produced short-term deposition extrapolating to 0.011 mm buildup in three years. Studies continue to verify 4X as maximum cycles of concentration through control of water chemistry and rinsing after deluge. Deluge water used at ACT facility is sufficiently aggressive to warrant use of Alclad to extend tube service life.

Wheeler, K.R.; May, R.P.; Douglas, J.G.; Tylczak, J.H.

1981-07-01T23:59:59.000Z

220

Comparison of an impedance heating system to mineral insulated heat trace for power tower applications  

SciTech Connect (OSTI)

A non-conventional type of heating system is being tested at Sandia National Laboratories for solar thermal power tower applications. In this system, called impedance heating, electric current flows directly through the pipe to maintain the desired temperature. The pipe becomes the resistor where the heat is generated. Impedance heating has many advantages over previously used mineral insulated (MI) heat trace. An impedance heating system should be much more reliable than heat trace cable since delicate junctions and cabling are not used and the main component, a transformer, is inherently reliable. A big advantage of impedance heating is the system can be sized to rapidly heat up the piping to provide rapid response times necessary in cyclic power plants such as solar power towers. In this paper, experimental results from testing an impedance heating system are compared to MI heat trace. The authors found impedance heating was able to heat piping rapidly and effectively. There were not significant stray currents and impedance heating did not affect instrumentation.

Pacheco, J.E.; Kolb, W.J.

1997-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower modifications changing" 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

Comparison of Triton SODAR Data to Meteorological Tower Wind Measurement Data in Hebei Province, China  

SciTech Connect (OSTI)

With the increased interest in remote sensing of wind information in recent years, it is important to determine the reliability and accuracy of new wind measurement technologies if they are to replace or supplement conventional tower-based measurements. In view of this, HydroChina Corporation and the United States National Renewable Energy Laboratory (NREL) conducted a comparative test near a wind farm in Hebei Province, China. We present the results of an analysis characterizing the measurement performance of a state-of-the-art Sound Detection and Ranging (sodar) device when compared to a traditional tower measurement program. NREL performed the initial analysis of a three-month period and sent the results to HydroChina. When another month of data became available, HydroChina and their consultant Beijing Millenium Engineering Software (MLN) repeated NREL's analysis on the complete data set, also adding sensitivity analysis for temperature, humidity, and wind speed (Section 6). This report presents the results of HydroChina's final analysis of the four-month period.

Yuechun, Y.; Jixue, W.; Hongfang, W.; Guimin, L.; Bolin, Y.; Scott, G.; Elliott, D.; Kline, D.

2012-01-01T23:59:59.000Z

222

Recovery Act Changes Hanford Skyline with Explosive Demolitions |  

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

Recovery Act Changes Hanford Skyline with Explosive Demolitions Recovery Act Changes Hanford Skyline with Explosive Demolitions Recovery Act Changes Hanford Skyline with Explosive Demolitions American Recovery and Reinvestment Act workers at the Hanford Site recently used explosives to demolish industrial structures that supported plutonium processing for national defense. The explosive demolitions took down two 250-foot-tall exhaust chimneys, two 90-foot-fall air filter structures, and a 140-foot-tall water tower. The water tower was marked by a "Work Safely" motto that greeted workers. "Given the sheer height of the structures, explosive demolition was selected as the safer method of demolition," said Kurt Kehler, vice president and decommissioning and demolition project manager of CH2M HILL Plateau Remediation Company, DOE's contractor at the

223

Recovery Act Changes Hanford Skyline with Explosive Demolitions |  

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

Recovery Act Changes Hanford Skyline with Explosive Demolitions Recovery Act Changes Hanford Skyline with Explosive Demolitions Recovery Act Changes Hanford Skyline with Explosive Demolitions American Recovery and Reinvestment Act workers at the Hanford Site recently used explosives to demolish industrial structures that supported plutonium processing for national defense. The explosive demolitions took down two 250-foot-tall exhaust chimneys, two 90-foot-fall air filter structures, and a 140-foot-tall water tower. The water tower was marked by a "Work Safely" motto that greeted workers. "Given the sheer height of the structures, explosive demolition was selected as the safer method of demolition," said Kurt Kehler, vice president and decommissioning and demolition project manager of CH2M HILL Plateau Remediation Company, DOE's contractor at the

224

Surface modification of polymeric materials by cold atmospheric plasma jet  

Science Journals Connector (OSTI)

Abstract In this work we report the surface modification of different engineering polymers, such as, polyethylene terephthalate (PET), polyethylene (PE) and polypropylene (PP) by an atmospheric pressure plasma jet (APPJ). It was operated with Ar gas using 10kV, 37kHz, sine wave as an excitation source. The aim of this study is to determine the optimal treatment conditions and also to compare the polymer surface modification induced by plasma jet with the one obtained by another atmospheric pressure plasma source the dielectric barrier discharge (DBD). The samples were exposed to the plasma jet effluent using a scanning procedure, which allowed achieving a uniform surface modification. The wettability assessments of all polymers reveal that the treatment leads to reduction of more than 40 in the water contact angle (WCA). Changes in surface composition and chemical bonding were analyzed by x-ray photoelectron spectroscopy (XPS) and Fourier-Transformed Infrared spectroscopy (FTIR) that both detected incorporation of oxygen-related functional groups. Surface morphology of polymer samples was investigated by Atomic Force Microscopy (AFM) and an increase of polymer roughness after the APPJ treatment was found. The plasma-treated polymers exhibited hydrophobic recovery expressed in reduction of the O-content of the surface upon rinsing with water. This process was caused by the dissolution of low molecular weight oxidized materials (LMWOMs) formed on the surface as a result of the plasma exposure.

K.G. Kostov; T.M.C. Nishime; A.H.R. Castro; A. Toth; L.R.O. Hein

2014-01-01T23:59:59.000Z

225

Firearms Modifications List- June 13, 2012  

Broader source: Energy.gov [DOE]

This document contains the currently-approved protective force "Firearms Modification List" referred to in Department of Energy Order 473.3, Protection Program Operations. This supersedes any previous versions of this document

226

Formal Design Review Foot Clamp Modification  

SciTech Connect (OSTI)

This report documents the Design Review performed for the foot clamp modification. The report documents the acceptability of the design, identifies the documents that were reviewed, the scope of the review and the members of the review team.

OTEN, T.C.

2000-01-24T23:59:59.000Z

227

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

National Nuclear Security Administration (NNSA)

small business will be submitted and negotiated each year upon request by the Contracting Officer within the time Attachment to Modification M209 B&W Pantex Contract No....

228

(4/28/14) SUMMARY OF MODIFICATIONS  

E-Print Network [OSTI]

(4/28/14) SUMMARY OF MODIFICATIONS FACULTY HANDBOOK SECTION 8 PROMOTION AND TENURE Subject Description Relevant Handbook Sections Allow for delay the application and review procedures set forth in this section of the Handbook. The tenure track refers

229

(5/1/14) SUMMARY OF MODIFICATIONS  

E-Print Network [OSTI]

(5/1/14) SUMMARY OF MODIFICATIONS FACULTY HANDBOOK SECTION 12 UNIVERSITY COMMITTEES Subject Description Relevant Handbook Sections Safety Committee COMMITTEES For the purposes of this Handbook section only, the term "academic faculty" shall include all

230

(3/13/14) SUMMARY OF MODIFICATIONS  

E-Print Network [OSTI]

(3/13/14) SUMMARY OF MODIFICATIONS FACULTY HANDBOOK SECTION 5 RIGHTS, PRIVILEGES, AND BENEFITS Subject Description Relevant Handbook Sections Define class to at most two weeks per year. Vacation benefit does not roll from year to year

231

ENVIRONMENTAL ASSESSMENT FOR WASTE WATER TREATMENT MODIFICATIONS  

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

WASTE WATER TREATMENT MODIFICATIONS WASTE WATER TREATMENT MODIFICATIONS FOR IMPROVED EFFLUENT COMPLIANCE BROOKHAVEN NATIONAL LABORATORY UPTON, NEW YORK BROOKHAVEN SITE OFFICE JUNE 24, 2011 DOE/EA-1854 i Table of Contents 1.0 INTRODUCTION ............................................................................................................... 1 2.0 SUMMARY ........................................................................................................................ 1 3.0 PURPOSE AND NEED ....................................................................................................17 4.0 ALTERNATIVES ..............................................................................................................17 4.1 Alternative 1 - Groundwater Recharge System (Preferred Alternative) .............. 17

232

Interface Modifications by Anion Acceptors for High Energy Lithium...  

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

Modifications by Anion Acceptors for High Energy Lithium Ion Batteries. Interface Modifications by Anion Acceptors for High Energy Lithium Ion Batteries. Abstract: Li-rich, Mn-rich...

233

Modification of Defect Structures in Graphene by Electron Irradiation...  

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

Modification of Defect Structures in Graphene by Electron Irradiation: Ab Initio Molecular Dynamics Simulations. Modification of Defect Structures in Graphene by Electron...

234

Structural Modification of Nanocrystalline Ceria by Ion Beams...  

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

Modification of Nanocrystalline Ceria by Ion Beams. Structural Modification of Nanocrystalline Ceria by Ion Beams. Abstract: Using energetic ions, we have demonstrated effective...

235

Accepted as "Opinion" article in WIREs Climate Change Rethinking climate engineering categorization in the context  

E-Print Network [OSTI]

reductions. Local targeted climate modification can be seen as an adaptation measure as long the impacts of climate change4 . Due to the strong emphasis on the climate modification aspect, we favor

Paris-Sud XI, Université de

236

Department of Mechanical Engineering Spring 2010 Kenya Water Well Drill Rig Redesign of Engine Drive Train System & Support Tower  

E-Print Network [OSTI]

of Engine Drive Train System & Support Tower Overview The team was presented with the task of redesigning the engine drive train system and support structure for a water drill rig to be used in Kenya. The original engine drive train system was fabricated by a professional machinist and had many intricate components

Demirel, Melik C.

237

Long-Term Carbon Dioxide Fluxes from a Very Tall Tower in a Northern Forest: Flux Measurement Methodology  

Science Journals Connector (OSTI)

Methodology for determining fluxes of CO2 and H2O vapor with the eddy-covariance method using data from instruments on a 447-m tower in the forest of northern Wisconsin is addressed. The primary goal of this study is the validation of the methods ...

Bradford W. Berger; Kenneth J. Davis; Chuixiang Yi; Peter S. Bakwin; Cong Long Zhao

2001-04-01T23:59:59.000Z

238

A multi-site analysis of random error2 in tower-based measurements of carbon and energy fluxes3  

E-Print Network [OSTI]

1 A multi-site analysis of random error2 in tower-based measurements of carbon and energy fluxes3 4 MEASUREMENTS Richardson et al. 1 January 13, 2006 Abstract1 Measured surface-atmosphere fluxes of energy open-path, gas analyzer is22 used.23 #12;RANDOM ERRORS IN ENERGY AND CO2 FLUX MEASUREMENTS Richardson

239

Evidence of a Threshold Wind Speed in Tower-mounted Scatterometer Data David W. Draper and David G. Long  

E-Print Network [OSTI]

Evidence of a Threshold Wind Speed in Tower-mounted Scatterometer Data David W. Draper and David G ) in scatterom- eter measurements over water is theorized to go to zero below a threshold wind speed due. Evidence of the threshold wind speed and a hysteresis effect have been observed in airship and wave tank

Long, David G.

240

tall tower facility and instrumentation New coNstraiNts oN the Nitrous oxide budget of agricultural ecosystems  

E-Print Network [OSTI]

thick. The FAO classification is Chernozem. The field site has been under cultivation for the past 125. The tall tower source footprint is dominated by agricultural land use. The domi- nant crop types include measured at 100 m using a three dimensional sonic anemometer- thermometer for computation of energy, water

Minnesota, University of

Note: This page contains sample records for the topic "tower modifications changing" 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

Raw Data from National Wind Technology Center M2 Tower (1996 - 2001) |  

Open Energy Info (EERE)

1996 - 2001) 1996 - 2001) Dataset Summary Description This raw data reflects readings from instruments mounted on or near a 82 meter meteorological tower located at the National Wind Technology Center (NWTC), approximately 5 miles south of Boulder, CO (specifically: 39.9107 N, 105.2348 W, datum WGS84). The base elevation at the site is 1,855 meters AMSL.The dataset includes irrandiance information (Global, kWs/m2) and meteorological data, such as temperature, pressure, and dew point, as well as wind speed and direction at 2m, 5m, 10m, 20m, 50m, and 80m. Included here is a portion of the available data: from September 23, 1996 - August 23, 2001. A separate dataset is available for Aug 24, 2001 - March 10, 2011 in OpenEI. The NWTC website provides current data (updated daily), from as early as August 24, 2001, as well as instrument specifications.

242

DOE/SC-ARM/TR-128 Tower Water-Vapor Mixing Ratio Value-Added  

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

8 8 Tower Water-Vapor Mixing Ratio Value-Added Product April 2013 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government or any agency thereof. The views and

243

Raw Data from National Wind Technology Center M2 Tower (2001 - 2011) |  

Open Energy Info (EERE)

2001 - 2011) 2001 - 2011) Dataset Summary Description This raw data reflects readings from instruments mounted on or near a 82 meter meteorological tower located at the National Wind Technology Center (NWTC), approximately 5 miles south of Boulder, CO (specifically: 39.9107 N, 105.2348 W, datum WGS84). The base elevation at the site is 1,855 meters AMSL.The dataset includes irrandiance information, such as global PSP (W/m2) and meteorological data, such as temperature, pressure, and wind speed and direction (at 2m, 5m, 10m, 20m, 50m, and 80m). Included here is a portion of the available data: from August 24, 2001 - March 10, 2011. A separate dataset is available for the period between September 23, 1996 and August 23, 2001.The NWTC website provides up to the day updates to this data, from as early as August 24, 2001 through yesterday, as well as instrument specifications.

244

Energy Tower combined with pumped storage and desalination: Optimal design and analysis  

Science Journals Connector (OSTI)

The Energy Tower (ET) is a power plant project which uses hot dry air and seawater to produce electricity. An optimized design of a system that is a combination of an ET, pumped storage and seawater desalination plant is considered. A model set covering each subsystem, and results of the optimized design for a project in the area of Eilat are presented. The additional benefit from combining the systems comes from an efficient use of the energy in the brine water coming from the desalination process, and from using pumped storage in an unconventional way. The benefits of the combined system lead to an increase of 14% in the annual net profit, compared to the sum of profits from optimally designed stand-alone systems.

E. Omer; R. Guetta; I. Ioslovich; P.O. Gutman; M. Borshchevsky

2008-01-01T23:59:59.000Z

245

Fuzzy Logic Application for Optimization of the Cooling Towers Control System  

E-Print Network [OSTI]

The control system for the SPS-BA6 cooling towers station is considered in order to introduce the concept of a multivariable process. Multivariable control means the maintenace of several controlled variables at independent set points. In a single-variable system, to keep the single process variables within their critical values is considered a rather simple operation. In a complex multivariable system, the determination of the optimal operation point results in a combination of all set values of the variables. Control of a multivariable system requires therefore a more complex analysis. As the solution based on a mathematical model of the process is far beyond acceptable complexity, most mathematical models involve extensive simplifications and linearizations to optimize the resulting controllers. In this report the author will demonstrate how fuzzy logic might provide elegant and efficient solutions in the design of multivariable control based on experimental results rather than on mathematical models.

Blanc, D

2000-01-01T23:59:59.000Z

246

Prototype Test Results of the Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE)  

E-Print Network [OSTI]

There are currently no experiments, either satellite or ground-based, that are sensitive to astrophysical gamma-rays at energies between 20 and 250 GeV. We are developing the Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE) to explore this energy range. STACEE will use heliostat mirrors at a solar research facility to collect Cherenkov light from extensive air showers produced by high energy gamma-rays. Here we report on the results of prototype test work at the solar facility of Sandia National Laboratories (Albuquerque, NM). The work demonstrates that the facility is suitable for use as an astrophysical observatory. In addition, using a full scale prototype of part of STACEE, we detected atmospheric Cherenkov radiation at energies lower than any other ground-based experiment to date.

STACEE Collaboration

1997-04-03T23:59:59.000Z

247

Life Cycle Greenhouse Gas Emissions of Trough and Tower Concentrating Solar Power Electricity Generation: Systematic Review and Harmonization  

SciTech Connect (OSTI)

In reviewing life cycle assessment (LCA) literature of utility-scale concentrating solar power (CSP) systems, this analysis focuses on reducing variability and clarifying the central tendency of published estimates of life cycle greenhouse gas (GHG) emissions through a meta-analytical process called harmonization. From 125 references reviewed, 10 produced 36 independent GHG emissions estimates passing screens for quality and relevance: 19 for parabolic trough (trough) technology and 17 for power tower (tower) technology. The interquartile range (IQR) of published estimates for troughs and towers were 83 and 20 grams of carbon dioxide equivalent per kilowatt-hour (g CO2-eq/kWh),1 respectively; median estimates were 26 and 38 g CO2-eq/kWh for trough and tower, respectively. Two levels of harmonization were applied. Light harmonization reduced variability in published estimates by using consistent values for key parameters pertaining to plant design and performance. The IQR and median were reduced by 87% and 17%, respectively, for troughs. For towers, the IQR and median decreased by 33% and 38%, respectively. Next, five trough LCAs reporting detailed life cycle inventories were identified. The variability and central tendency of their estimates are reduced by 91% and 81%, respectively, after light harmonization. By harmonizing these five estimates to consistent values for global warming intensities of materials and expanding system boundaries to consistently include electricity and auxiliary natural gas combustion, variability is reduced by an additional 32% while central tendency increases by 8%. These harmonized values provide useful starting points for policy makers in evaluating life cycle GHG emissions from CSP projects without the requirement to conduct a full LCA for each new project.

Burkhardt, J. J.; Heath, G.; Cohen, E.

2012-04-01T23:59:59.000Z

248

Epigenetic changes induced by curcumin and other natural compounds  

Science Journals Connector (OSTI)

Epigenetic regulation, which includes changes in DNA methylation, histone modifications, and alteration in microRNA (miRNA) expression without any change in the DNA sequence, constitutes an important mechanism...

Simone Reuter; Subash C. Gupta; Byoungduck Park; Ajay Goel

2011-05-01T23:59:59.000Z

249

Evaluation of histone sequence and modifications by electrospray ionization mass spectrometry and tandem mass spectrometry  

SciTech Connect (OSTI)

The histones, together with other specialized proteins and DNA, form the extraordinarily complex structure of chromatin. Electrospray ionization (ESI) permits the promotion of such protein species into the gas phase as intact, multiply charged molecular species. Mass spectrometry (MS), using a linear quadrupole mass filter, permits measurement of the relative molecular mass of these intact species with precision and accuracy. The latter are sufficient to evaluate variations in the primary structure of the histones and the type and extent of the natural and induced multiple covalent modifications. The locations of modifications are revealed by tandem mass spectrometry using tandem linear quadrupole or ion trap instruments on the intact species or the modified peptides derived by selective proteolysis. Experiments in applying this technique to histones from K562, a human-derived cell line, have demonstrated variations in the profile of modification through the normal cell cycle and in the presence of agents that inhibit enzymes responsible for reversal of the modification. The authors are currently testing the hypothesis that ESI-MS will permit the sensitive and selective identification of insult-induced modifications, distinguishing them from natural cell-cycle changes. This will be possible because ESI-MS reveals the full details of the profile of multiple posttranslational modifications of histones.

Edmonds, C.G.; Loo, J.A.; Smith, R.D.; Fuciarelli, A.F.; Thrall, B.D.; Morris, J.E.; Springer, D.L. (Pacific Northwest Lab., Richland, WA (United States))

1993-01-01T23:59:59.000Z

250

Development of an Improved Permeability Modification Simulator  

SciTech Connect (OSTI)

This report describes the development of an improved permeability modification simulator performed jointly by BDM Petroleum Technologies and Schlumberger Dowell under a cooperative research and development agreement (CRADA) with the US Department of Energy. The improved simulator was developed by modifying NIPER's PC-GEL permeability modification simulator to include a radial model, a thermal energy equation, a wellbore simulator, and a fully implicit time-stepping option. The temperature-dependent gelation kinetics of a delayed gel system (DGS) is also included in the simulator.

Gao, H.W.; Elphnick, J.

1999-03-09T23:59:59.000Z

251

Surface modification to prevent oxide scale spallation  

DOE Patents [OSTI]

A surface modification to prevent oxide scale spallation is disclosed. The surface modification includes a ferritic stainless steel substrate having a modified surface. A cross-section of the modified surface exhibits a periodic morphology. The periodic morphology does not exceed a critical buckling length, which is equivalent to the length of a wave attribute observed in the cross section periodic morphology. The modified surface can be created using at least one of the following processes: shot peening, surface blasting and surface grinding. A coating can be applied to the modified surface.

Stephens, Elizabeth V; Sun, Xin; Liu, Wenning; Stevenson, Jeffry W; Surdoval, Wayne; Khaleel, Mohammad A

2013-07-16T23:59:59.000Z

252

MODIFICATIONS PROCESSING PROCEDURE This document outlines the DUHS IRB procedure for preparing and processing the  

E-Print Network [OSTI]

1 MODIFICATIONS PROCESSING PROCEDURE 6/2/2011 This document outlines the DUHS IRB procedure to choose. The Mods request asks the PI to submit a point-by-point response as well as revised documents from the PI with submission of the tracked version of the changes. If the PI has not submitted

253

ENVIRONMENTAL ASSESSMENT Waste Water Treatment Modifications for  

E-Print Network [OSTI]

Actions - Isolate and restore sand filter beds (~10 acres) - Remove UV light sanitation system ­ evaluateENVIRONMENTAL ASSESSMENT FOR Waste Water Treatment Modifications for Improved Effluent Compliance adhering to them. · Develop recharge basins for disposal of treated waste water. Polythiocarbonate

Homes, Christopher C.

254

Modification No. M253 Supplemental Agreement to  

E-Print Network [OSTI]

Type Subject Brief Description Country: Argentina 61 407 8/1/1996 8/1/2001 Primary DOE None Energy.S. Department of Energy and Brookhaven Science Associates, LLC ATTACHMENT J.10 APPENDIX J TREATIES Contract No. DE-AC02-98CH10886 Modification No. M253 #12;United States Department of Energy Agreement

Johnson, Peter D.

255

In-Medium Modifications of Hadron Properties  

E-Print Network [OSTI]

The in-medium modifications of hadron properties are briefly discussed. We restrict the discussion to the lattice QCD calculations for the hadron masses, screening masses, decay constants and wave functions. We review the progress made so far and describe how to broaden its horizon.

A. Tawfik

2006-03-22T23:59:59.000Z

256

TheGoldenGateBridgeWeatherJuly2010,Vol.65,No.7 fog, but the north tower had a story to tell. It  

E-Print Network [OSTI]

. It worked as a chimney. The fog entered and escaped through the openings of the tower, displaying iridescent they are caused by an object's shadows. Sightings of fogbows, solar glories, solar coronas, Brocken Spectres

Reading, University of

257

WindPACT Turbine Design Scaling Studies Technical Area 3ŒSelf-Erecting Tower and Nacelle Feasibility  

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

1 * NREL/SR-500-29493 1 * NREL/SR-500-29493 Global Energy Concepts, LLC Kirkland, Washington WindPACT Turbine Design Scaling Studies Technical Area 3-Self-Erecting Tower and Nacelle Feasibility March 2000-March 2001 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute * * * * Battelle * * * * Bechtel Contract No. DE-AC36-99-GO10337 May 2001 * NREL/SR-500-29493 WindPACT Turbine Design Scaling Studies Technical Area 3-Self-Erecting Tower and Nacelle Feasibility March 2000-March 2001 Global Energy Concepts, LLC Kirkland, Washington NREL Technical Monitor: Alan Laxson Prepared under Subcontract No. YAM-0-30203-01 National Renewable Energy Laboratory 1617 Cole Boulevard

258

The PNL single-tower measurement model of rotationally sampled turbulent wind, with user's guide for STRS2PC  

SciTech Connect (OSTI)

This report describes a single-tower rotationally sampled wind model, STRS-2, that approximates a set of time series of turbulent wind experienced by individual points rotating in circles in a crosswind plane using measurements from anemometers arrayed vertically along a single line. The purposes of the model are (1) to use turbulence measurements made economically from conventional single-tower arrays of anemometers, (2) to incorporate measures characteristics of the wind at specific sites under consideration for operation of wind turbines, spanning the height range if interest, and (3) to estimate the unmeasured turbulence characteristics in the crosswind plane that spans the disk of the rotor blades. 17 refs., 15 figs., 5 tabs.

Connell, J.R.; Morris, V.R.; Powell, D.C.; Gower, G.L.

1988-06-01T23:59:59.000Z

259

Separation of Fine Particles from Gases in Wet Flue Gas Desulfurization System Using a Cascade of Double Towers  

Science Journals Connector (OSTI)

Separation of Fine Particles from Gases in Wet Flue Gas Desulfurization System Using a Cascade of Double Towers ... The authors thank the High-Tech Research and Development Program of China (No. 2008AA05Z306), the Natural Science Foundation of Jiangsu Province (No. BK2008283), and the Scientific Research Foundation of Graduate School of Southeast University for their financial support. ... with high performance by cascading packed columns. ...

Jingjing Bao; Linjun Yang; Shijuan Song; Guilong Xiong

2012-02-15T23:59:59.000Z

260

ARRA FEMP Technical Assistance -- Federal Aviation Administration Project 209 -- Control Tower and Support Building, Palm Springs, CA  

SciTech Connect (OSTI)

This report represents findings of a design review team that evaluated construction documents (at the 100% level) and operating specifications for a new control tower and support building that will be built in Palm Springs, California by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specifications that would result in additional energy savings for the FAA that would not have otherwise occurred.

Arends, J.; Sandusky, William F.

2010-03-31T23:59:59.000Z

Note: This page contains sample records for the topic "tower modifications changing" 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

Structural Design Considerations for Tubular Power Tower Receivers Operating at 650 Degrees C: Preprint  

SciTech Connect (OSTI)

Research of advanced power cycles has shown supercritical carbon dioxide power cycles may have thermal efficiency benefits relative to steam cycles at temperatures around 500 - 700 degrees C. To realize these benefits for CSP, it is necessary to increase the maximum outlet temperature of current tower designs. Research at NREL is investigating a concept that uses high-pressure supercritical carbon dioxide as the heat transfer fluid to achieve a 650 degrees C receiver outlet temperature. At these operating conditions, creep becomes an important factor in the design of a tubular receiver and contemporary design assumptions for both solar and traditional boiler applications must be revisited and revised. This paper discusses lessons learned for high-pressure, high-temperature tubular receiver design. An analysis of a simplified receiver tube is discussed, and the results show the limiting stress mechanisms in the tube and the impact on the maximum allowable flux as design parameters vary. Results of this preliminary analysis indicate an underlying trade-off between tube thickness and the maximum allowable flux on the tube. Future work will expand the scope of design variables considered and attempt to optimize the design based on cost and performance metrics.

Neises, T. W.; Wagner, M. J.; Gray, A. K.

2014-04-01T23:59:59.000Z

262

A new method for the design of the heliostat field layout for solar tower power plant  

Science Journals Connector (OSTI)

A new method for the design of the heliostat field layout for solar tower power plant is proposed. In the new method, the heliostat boundary is constrained by the receiver geometrical aperture and the efficiency factor which is the product of the annual cosine efficiency and the annual atmospheric transmission efficiency of heliostat. With the new method, the annual interception efficiency does not need to be calculated when places the heliostats, therefore the total time of design and optimization is saved significantly. Based on the new method, a new code for heliostat field layout design (HFLD) has been developed and a new heliostat field layout for the PS10 plant at the PS10 location has been designed by using the new code. Compared with current PS10 layout, the new designed heliostats have the same optical efficiency but with a faster response speed. In addition, to evaluate the feasibility of crops growth on the field land under heliostats, a new calculation method for the annual sunshine duration on the land surface is proposed as well.

Xiudong Wei; Zhenwu Lu; Zhifeng Wang; Weixing Yu; Hongxing Zhang; Zhihao Yao

2010-01-01T23:59:59.000Z

263

A model for noise radiated by submerged piles and towers in littoral environments  

Science Journals Connector (OSTI)

Pile driving in shallow water during the construction of bridges and other structures can produce transient broadband noise of sufficient intensity to kill fish and disturb marine mammals. Sustained tonal noise radiated by towers supporting offshore wind turbines contains energy in frequency bands that may inhibit detection of coastal activities via passive sonar and seismic sensors. Understanding the generation and propagation of underwater noise due to pile driving and wind farms is important for determining the best strategies for mitigating the environmental impact of these noisesources. An analytic model based on a Green's function approach is presented for the sound radiated in the water column by a submerged cylindrical structure embedded in horizontally stratified layers of sediment. The sediment layers are modeled as viscoelastic media and the Green's function is derived via angular spectrum decomposition. Noise radiation due to both vibration of the structure and impulses delivered to the sediment is considered. Contributions to the pressure field in the water column due to radiation directly into the water radiation from the sediment into the water and Scholte waves propagating along the sediment-water interface will be discussed. [Work supported by the ARL:UT IR&D program.

Todd A. Hay; Yurii A. Ilinskii; Evgenia A. Zabolotskaya; Preston S. Wilson; Mark F. Hamilton

2011-01-01T23:59:59.000Z

264

Modifications to the NRAD Reactor, 1977 to present  

SciTech Connect (OSTI)

Argonne National Laboratory-West, operated by the University of Chicago, is located near Idaho Falls, ID, on the Idaho National Engineering laboratory Site. ANL-West performs work in support of the Liquid Metal Fast Breeder Reactor Program (LMFBR) sponsored by the United States Department of Energy. The NRAD reactor is located at the Argonne Site within the Hot Fuel Examination Facility/North, a large hot cell facility where both non-destructive and destructive examinations are performed on highly irradiated reactor fuels and materials in support of the LMFBR program. The NRAD facility utilizes a 250-kW TRIGA reactor and is completely dedicated to neutron radiography and the development of radiography techniques. Criticality was first achieved at the NRAD reactor in October of 1977. Since that time, a number of modifications have been implemented to improve operational efficiency and radiography production. This paper describes the modifications and changes that significantly improved operational efficiency and reliability of the reactor and the essential auxiliary reactor systems.

Weeks, A.A.; Pruett, D.P.; Heidel, C.C.

1986-01-01T23:59:59.000Z

265

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

National Nuclear Security Administration (NNSA)

CONTRACT ID CODE j PAGE OF PAGES 1 I 2 2 AMENDMENT/MODIFICATION NO 3. EFFECTIVE DATE 4 REQUISITION/PURCHASE REO NO. 15. PROJECT NO. (II applicable) 220 See Block 16C 6 ISSUED BY CODE 05003 7 ADMINISTERED BY (lfolherthan Item 6) CODE 105003 NNSA/Los Alamos Sile Office NNSA/Los Alamos Site Office u.s. Department of Energy u.s. Department of Energy Los Alamos Site Office Los Alamos Site Office 3747 West Jemez Road 3747 West Jemez Road Los Alamos Los Alamos NM 87544 NM 87544 8. NAME AND ADDRESS OF CONTRACTOR (No .. street. county State and ZIP Code) ~ 9A. AMENDMENT OF SOLICITATION NO. LOS ALAMOS NATIONAL SECURITY, LLC A ttn: STEVE K. SHOOK 98 DATED (SEE ITEM 11) P.O. BOX 1663' MS P222 L OS ALAMOS Nt1 875450001 10A. MODIFICATION OF CONTRACT/ORDER NO

266

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

National Nuclear Security Administration (NNSA)

9 9 11. CONTRACT 10 CODE 1PAGE OF PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1 I 25 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ . NO . 5 PROJECT NO. (If applicab/e) See Bl ock 1 6C 1 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE 105007 NNSA / Pantex Site Office 05007 NNSA/Pantex Site Office U.S. Department of Energy U.S. Department of Energy Nt SA/ Pantex S it e Offi ce NNSA/Pantex Site Office P.O. Box 30030 P . O . Box 30030 Amarillo TX 79 1 20-0030 Amarillo TX 79 1 20 - 0030 8 NAME AND ADDRESS OF CONTRACTOR (No., streel, county, Siele end ZIP Code) 9A AMENDMENT OF SOLICITATION NO. (xl - BABCOCK & WILCOX TECHNICAL SERVICES PANTEX, L L C Attn : GARY ALLEN 9B . DATED (SEE /TEM 11) P,0 . BOX 30020

267

DOE to Hold Public Information Meetings on Permit Modifications  

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

Meetings On Permit Modifications CARLSBAD, N.M., May 8, 2001 - The public is invited to comment on two proposed modifications to the Hazardous Waste Facility Permit for the Waste...

268

DRAGON 3.06H Fission Rate Modifications With Tutorial  

E-Print Network [OSTI]

This is a modification to the reactor simulation code DRAGON 3.06H. The modification includes the modified files, a tutorial in PDF, and a sample input and output,

Jones, Christopher

2012-04-13T23:59:59.000Z

269

Silane Modification of Glass and Silica Surfaces to Obtain Equally...  

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

Silane Modification of Glass and Silica Surfaces to Obtain Equally Oil-Wet Surfaces in Glass-Covered Silicon Micromodel Silane Modification of Glass and Silica Surfaces to Obtain...

270

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

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

AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 15. PROJECT NO. (If app/icable) 331 See Block 16C 6. ISSUED BY CODE 00518 7. ADMINISTERED BY (If other than Item 6) CODE 100518 Oak Ridge Oak Ridge U.S. Department of Energy U.S. Department of Energy P.O. Box 2001 P.O. Box 2001 Oak Ridge TN 37831 Oak Ridge TN 37831 8. NAME AND ADDRESS OF CONTRACTOR (No .. slreet, county, State and ZIP Code) (x) 9A. AMENDMENT OF SOLICITATION NO. - OAK RIDGE ASSOCIATED UNIVERSITIES, INC. P.O. BOX 117 9B. DATED (SEE ITEM 11) o AK RIDGE TN 37830-6218 x 10A. MODIFICATION OF CONTRACT/ORDER NO. DE-AC05-060R23100 108. DATED (SEE ITEM 13) CODE 041152224 FACILITY CODE 12/21/2005 11. THIS ITEM ONLY APPLIES TO OF IIU .... O:' The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers -

271

Low NOx modifications on front-fired pulverized coal fuel burners  

SciTech Connect (OSTI)

Burner optimizations and modifications were performed on Public Service of New Hampshire`s Schiller Units 4, 5, and 6. These are Foster-Wheeler 50 MWg pulverized coal and No.6 fuel oil-fired boilers with six burners each. Burner optimizations consisted of fuel flow, primary air, secondary air testing and balancing. Burner modifications consisted of the addition of circumferentially and radially staged flame stabilizers, circumferentially-staged coal spreaders, and modifications to the existing pulverized coal pipe. NO{sub x} emissions on Unit 6 of .41 lb/mmBtu were achieved at optimized burner settings at full load with all burners in service and without the use of overfire air or bias firing. This represented a 50% NO{sub x} reduction from the average pre-modification baseline NO{sub x} emissions of .81 lb/mmBtu prior to the optimizations and burner modification program. NO{sub x} emissions as low as .38 lb/mmBtu were achieved with the use of overfire air. There was essentially no quantifiable change in LOIs (baseline LOIs averaged 40%). Furnace excess O{sub 2} as low as 1.2% was achieved with CO emissions of less than 200 ppm. Total installed costs including the overfire air system were approximately $7/kW.

Owens, B.; Hitchko, M. [Public Service of New Hampshire, Manchester, NH (United States); Broderick, R.G. [RJM Corp., Ridgefield, CT (United States)

1996-01-01T23:59:59.000Z

272

Ionospheric modification experiments with the Arecibo Heating Facility  

Science Journals Connector (OSTI)

The results obtained with ionospheric modification experiments over the three years preceding the XXI General Assembly of URSI in 1984 at Florence are reviewed. The topics discussed include weak electromagnetic sidebands observed using a single pump frequency, the HF-induced plasma line at 3.175 \\{MHz\\} and its similarity to the plasma lines observed using higher HF frequencies near Troms, the HF-enhanced plasma line observed with the 50 \\{MHz\\} radar, the HF-induced plasma line with a doublehumped spectrum below threshold. HF-induced plasma line spectra with height discrimination using a new technique, the HF-induced plasma line and ion line spectra obtained with two pumps differing in frequency by a few kHz, narrow features such as the OTSI in the HF-enhanced plasma line and ion line spectra observed by a new technique, the use of such narrow features for measuring the line-of-sight electron drift velocity, the discovery of a radical qualitative change in the spectrum of the HF-induced plasma line as the HF power (CW) is increased or as the duty cycle is changed while pulsing, observations of the temporal development of the enhancement of the thermal plasma line at the peak of the F2-layer by electrons accelerated during ionospheric heating studies of artificial density stratification resulting from the standing wave nature of the heating wave and strong electromagnetic sidebands generated by two Powerful HF radio waves differing from each other by some tens of Hz. Theoretical work on soliton formation and on VLF generation by HF heating is briefly mentioned, as well as experimental studies of self-focusing by observing the scintillation of extraterrestrial radio sources, direct conversion and studies of short scale field-aligned irregularities by VHF radar backscatter during ionospheric modification.

J.A Fejer; C.A Gonzales; H.M Ierkic; M.P Sulzer; C.A Tepley; L.M Duncan; F.T Djuth; S Ganguly; W.E Gordon

1985-01-01T23:59:59.000Z

273

3-1 (6/15/01) HANDBOOK MODIFICATION PROCESS  

E-Print Network [OSTI]

3-1 (6/15/01) SECTION 3 HANDBOOK MODIFICATION PROCESS The Handbook modification process specified in this section shall apply to all amendments to section 1, sections 3 through 9, and section 12 of the Handbook to its consideration of proposed Handbook modifications. 3.1 ROLE OF THE HANDBOOK COMMITTEE Commencing

274

Incorporating supercritical steam turbines into molten-salt power tower plants : feasibility and performance.  

SciTech Connect (OSTI)

Sandia National Laboratories and Siemens Energy, Inc., examined 14 different subcritical and supercritical steam cycles to determine if it is feasible to configure a molten-salt supercritical steam plant that has a capacity in the range of 150 to 200 MWe. The effects of main steam pressure and temperature, final feedwater temperature, and hot salt and cold salt return temperatures were determined on gross and half-net efficiencies. The main steam pressures ranged from 120 bar-a (subcritical) to 260 bar-a (supercritical). Hot salt temperatures of 566 and 600%C2%B0C were evaluated, which resulted in main steam temperatures of 553 and 580%C2%B0C, respectively. Also, the effects of final feedwater temperature (between 260 and 320%C2%B0C) were evaluated, which impacted the cold salt return temperature. The annual energy production and levelized cost of energy (LCOE) were calculated using the System Advisory Model on 165 MWe subcritical plants (baseline and advanced) and the most promising supercritical plants. It was concluded that the supercritical steam plants produced more annual energy than the baseline subcritical steam plant for the same-size heliostat field, receiver, and thermal storage system. Two supercritical steam plants had the highest annual performance and had nearly the same LCOE. Both operated at 230 bar-a main steam pressure. One was designed for a hot salt temperature of 600%C2%B0C and the other 565%C2%B0C. The LCOEs for these plants were about 10% lower than the baseline subcritical plant operating at 120 bar-a main steam pressure and a hot salt temperature of 565%C2%B0C. Based on the results of this study, it appears economically and technically feasible to incorporate supercritical steam turbines in molten-salt power tower plants.

Pacheco, James Edward; Wolf, Thorsten [Siemens Energy, Inc., Orlando, FL; Muley, Nishant [Siemens Energy, Inc., Orlando, FL

2013-03-01T23:59:59.000Z

275

Technology to Facilitate the Use of Impaired Waters in Cooling Towers  

SciTech Connect (OSTI)

The project goal was to develop an effective silica removal technology and couple that with existing electro-dialysis reversal (EDR) technology to achieve a cost effective treatment for impaired waters to allow for their use in the cooling towers of coal fired power plants. A quantitative target of the program was a 50% reduction in the fresh water withdrawal at a levelized cost of water of $3.90/Kgal. Over the course of the program, a new molybdenum-modified alumina was developed that significantly outperforms existing alumina materials in silica removal both kinetically and thermodynamically. The Langmuir capacity is 0.11g silica/g adsorbent. Moreover, a low cost recycle/regeneration process was discovered to allow for multiple recycles with minimal loss in activity. On the lab scale, five runs were carried out with no drop in performance between the second and fifth run in ability to absorb the silica from water. The Mo-modified alumina was successfully prepared on a multiple kilogram scale and a bench scale model column was used to remove 100 ppm of silica from 400 liters of simulated impaired water. Significant water savings would result from such a process and the regeneration process could be further optimized to reduce water requirements. Current barriers to implementation are the base cost of the adsorbent material and the fine powder form that would lead to back pressure on a large column. If mesoporous materials become more commonly used in other areas and the price drops from volume and process improvements, then our material would also lower in price because the amount of molybdenum needed is low and no additional processing is required. There may well be engineering solutions to the fine powder issue; in a simple concept experiment, we were able to pelletize our material with Boehmite, but lost performance due to a dramatic decrease in surface area.

Colborn, Robert

2012-04-30T23:59:59.000Z

276

Nucleic acid modifications in bacterial pathogens - impact on pathogenesis, diagnosis, and therapy  

E-Print Network [OSTI]

Nucleic acids are subject to extensive chemical modification by all organisms. These modifications display incredible structural diversity, and some are essential for survival. Intriguingly, several of these modifications ...

Russell, Brandon S. (Brandon Skylur)

2014-01-01T23:59:59.000Z

277

FINAL REPORT: EDDY-COVARIANCE FLUX TOWER AND TRACER TECHNOLOGY SUPPORT FOR THE UNIVERSITY OF GEORGIA PROPOSAL: FROM TOWER TO PIXEL: INTEGRATION OF PATCH-SIZE NEE USING EXPERIMENTAL MODELING FOOTPRINT ANALYSIS.  

SciTech Connect (OSTI)

Brookhaven National Laboratory has been funded since October of 2000 to provide assistance to the University of Georgia in conducting footprint analyses of individual towers based on meteorology and trace gas measurements. Brookhaven researchers conducted air flow measurements using perfluorocarbon tracers and meteorological instrumentation for three experimental campaigns at an AmeriFlux research site maintained by Dr. Monique Leclerc near Gainesville, FL. In addition, BNL provided assistance with remote data collection and distribution from remote field sites operated by Dr. John Hom of the US Forest Service in the Pine Barrens of New Jersey and at FACE research sites in North Carolina and Wisconsin.

LEWIN,K.F.; NAGY, J.; WATSON, T.B.

2007-09-01T23:59:59.000Z

278

Modification of surface energy in nuclear multifragmentation  

E-Print Network [OSTI]

Within the statistical multifragmentation model we study modifications of the surface and symmetry energy of primary fragments in the freeze-out volume. The ALADIN experimental data on multifragmentation obtained in reactions induced by high-energy projectiles with different neutron richness are analyzed. We have extracted the isospin dependence of the surface energy coefficient at different degrees of fragmentation. We conclude that the surface energy of hot fragments produced in multifragmentation reactions differs from the values extracted for isolated nuclei at low excitation. At high fragment multiplicity, it becomes nearly independent of the neutron content of the fragments.

A. S. Botvina; N. Buyukcizmeci; M. Erdogan; J. Lukasik; I. N. Mishustin; R. Ogul; W. Trautmann

2006-06-29T23:59:59.000Z

279

Reduction of Glass Surface Reflectance by Ion Beam Surface Modification  

SciTech Connect (OSTI)

This is the final report for DOE contract DE-EE0000590. The purpose of this work was to determine the feasibility of the reduction of the reflection from the front of solar photovoltaic modules. Reflection accounts for a power loss of approximately 4%. A solar module having an area of one square meter with an energy conversion efficiency of 18% generates approximately 180 watts. If reflection loss can be eliminated, the power output can be increased to 187 watts. Since conventional thin-film anti-reflection coatings do not have sufficient environmental stability, we investigated the feasibility of ion beam modification of the glass surface to obtain reduction of reflectance. Our findings are generally applicable to all solar modules that use glass encapsulation, as well as commercial float glass used in windows and other applications. Ion implantation of argon, fluorine, and xenon into commercial low-iron soda lime float glass, standard float glass, and borosilicate glass was studied by implantation, annealing, and measurement of reflectance. The three ions all affected reflectance. The most significant change was obtained by argon implantation into both low-iron and standard soda-lime glass. In this way samples were formed with reflectance lower than can be obtained with a single-layer coatings of magnesium fluoride. Integrated reflectance was reduced from 4% to 1% in low-iron soda lime glass typical of the glass used in solar modules. The reduction of reflectance of borosilicate glass was not as large; however borosilicate glass is not typically used in flat plate solar modules. Unlike conventional semiconductor ion implantation doping, glass reflectance reduction was found to be tolerant to large variations in implant dose, meaning that the process does not require high dopant uniformity. Additionally, glass implantation does not require mass analysis. Simple, high current ion implantation equipment can be developed for this process; however, before the process can be employed on full scale solar modules, equipment must be developed for ion implanting large sheets of glass. A cost analysis shows that the process can be economical. Our finding is that the reduction of reflectance by ion beam surface modification is technically and economically feasible. The public will benefit directly from this work by the improvement of photovoltaic module efficiency, and indirectly by the greater understanding of the modification of glass surfaces by ion beams.

Mark Spitzer

2011-03-11T23:59:59.000Z

280

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

National Nuclear Security Administration (NNSA)

1. 1. CONTRACT 10 CODE PAGE 1 OF 2 PAGES 2. AMENDMENT/MODIFICATION NO. 13. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 15. PROJECT NO. (If applicable) M058 See Block 16 C 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.S. Department of Energy National Nuclear Security Administration Manager, Los Alamos Site Office 3747 West Jemez Road, Building 1410, TA-3 Los Alamos, NM 87544 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, state, ZIP Code) 9A. AMENDMENT OF SOLICITATION NO. Los Alamos National Security, LLC 4200 West Jemez Road 9B. DATED (SEE ITEM 11) Suite 400 Los Alamos, NM 87544 10A. MODIFICATION OF CONTRACT/ORDER NO. DE-AC52-06NA25396 CODE FACILITY CODE 10B. DATED (SEE ITEM 13) December 21, 2005 11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS o The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt

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281

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

National Nuclear Security Administration (NNSA)

AMENDMENT/MODIFICATION NO AMENDMENT/MODIFICATION NO . 3. EFFECTIVE DATE 0232 See Block 16C 6. ISSUED BY CODE 05003 NNSA/Los Al amos Si t e Office U. S . Dep a rtme nt of Ene r gy Los Alamo s Sit e Off i ce 3747 We st Jemez Road Los Al a mos NM 87544 8. NAME AND ADDRESS OF CONTRACTOR (No. , street, county, State and ZIP Code) L A OS ALAMOS NAT I ONAL SECURI TY, ttn : STEVE K. SHOOK P.O . BOX 1663 , M S P222 L OS ALAMOS NM 875450001 CODE 175252894 LLC FACILITY CODE 11 . CONTRACT ID CODE I PAGE OF PAGES 1 I 2 4. REQUISITION/PURCHASE REQ. NO. 15. PROJECT NO. (ff applicable) 7. ADMINISTERED BY (ff other than Item 6) CODE 1 05003 NNSA/ Los Alamos S i te Office U. S . Departme n t of Energy Los Alamos Site Off ice 3747 W est J e me z Ro a d Los Alamos NM 875 4 4 (x) 9A. AMENDMENT OF SOLICITATION NO. - 9B. DATED (SEE ITEM 11)

282

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

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

1 of2 1 of2 AC PAGES 2. AMENDMENT/MODIFICATION NO. 13. EFFECTIVE DATE 4. REQUISITION/PURCHASE , 5. PROJECT NO (If applicab/e) A193 See Block 16C REQ. NO. NOPR 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than /tern 6) CODE U.S. Department of Energy National Nuclear Security Administration P.O. Box 2050 Oak Ridge, TN 37831 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, state, ZIP Code) Babcock & Wilcox Technical Services Y-12, LLC P.O. Box 2009 MS 8014 Oak Ridge, TN 37831-8014 CODE FACILITY CODE 9A. AMENDMENT OF SOLICITATION NO. 9B. DATED (SEE ITEM 11) 10A. MODIFICATION OF CONTRACT/ORDER NO. DE-AC05-000R22800 10B. DATED (SEE ITEM 13) August 31,2000 11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS .. o The above numbered solicitation IS amended as set forth In Item 14. The hour and date specified for receipt of Offers 0

283

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 2. AMENDMENT/MODIFICATION NO  

E-Print Network [OSTI]

of Modification: The Department of Energy (DOE), Office of Science (SC), Pacific Northwest Site Office (PNSO BY CODE U.S. Department of Energy Pacific Northwest Site Office Post Office Box 350 Richiand, WA 99352 3 in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO AUTHORITY OF FAR 43.103(b). C

284

Effect of enzymatic modification on the film-forming properties of soy protein isolate  

E-Print Network [OSTI]

is destroyed; buried hydrophobic groups become exposed. These changes drasticagy affect several functional properties of the protein (Nielsen 1997). This thesis follows the style and format of Journal of Food Science. This process of modification, however..., reversible dissociation of the 9S dimer into individual polypeptides occurs as the ionic strength decreases (Nielsen 1985). Table 2- Amino acid composition and molecular masses of constituent subunits of tl-conglycinin' Amino acids (X Count Mol /0...

Chae, Sung Hee

2012-06-07T23:59:59.000Z

285

Atomic Substitutions in Yba2cu3o7 - Modification of the Electronic-Structure  

E-Print Network [OSTI]

, the atomic valences, and the Fermi en- ergy was calculated. I. INTRODUCTION Since the discovery of the new high-T, superconduc- tors, '2 there have been many studies of changes in the su- perconducting properties of these materials induced by re...307 to determine the modification of the local densities of states, the atomic valences, and the Fermi en- ergy. Some of these results have been presented in an ea.-- lier form. II. METHOD We previously calculated the electronic structure...

RICHERT, BA; Allen, Roland E.

1988-01-01T23:59:59.000Z

286

Renovation of steam electric power plant cooling tower blowdown for non-potable reuse. Technical report 2 Sep 81-15 Jan 84  

SciTech Connect (OSTI)

Findings are presented of a nine month pilot plant study investigating non-potable reuse potential of electric power plant cooling tower blowdown. The two demineralizing technologies studies included reverse osmosis and electrodialysis. Pretreatment throughout the testing was performed using chemical softening/clarification and dual media filtration. During the investigation, about 4,000 operating hours were put on each of the two desalting technology membranes to obtain information on membrane life expectancy. The most promising treatment technologies which meet the make-up water quality requirements for reuse of the cooling tower blowdown in the tower recirculating water system, as determined by pilot treatment train performance, are discussed. Potential power plant water reuse applications have been identified along with the water quality and quantity requirements. Comparisons were then made to the treated blowdown quality achieved from each of the pilot process elements.

Osantowski, R.; Kane, J.; Geinopolos, A.

1984-01-01T23:59:59.000Z

287

A new code for the design and analysis of the heliostat field layout for power tower system  

Science Journals Connector (OSTI)

A new code for the design and analysis of the heliostat field layout for power tower system is developed. In the new code, a new method for the heliostat field layout is proposed based on the edge ray principle of nonimaging optics. The heliostat field boundary is constrained by the tower height, the receiver tilt angle and size and the heliostat efficiency factor which is the product of the annual cosine efficiency and the annual atmospheric transmission efficiency. With the new method, the heliostat can be placed with a higher efficiency and a faster response speed of the design and optimization can be obtained. A new module for the analysis of the aspherical heliostat is created in the new code. A new toroidal heliostat field is designed and analyzed by using the new code. Compared with the spherical heliostat, the solar image radius of the field is reduced by about 30% by using the toroidal heliostat if the mirror shape and the tracking are ideal. In addition, to maximize the utilization of land, suitable crops can be considered to be planted under heliostats. To evaluate the feasibility of the crop growth, a method for calculating the annual distribution of sunshine duration on the land surface is developed as well.

Xiudong Wei; Zhenwu Lu; Weixing Yu; Zhifeng Wang

2010-01-01T23:59:59.000Z

288

A new code for the design and analysis of the heliostat field layout for power tower system  

SciTech Connect (OSTI)

A new code for the design and analysis of the heliostat field layout for power tower system is developed. In the new code, a new method for the heliostat field layout is proposed based on the edge ray principle of nonimaging optics. The heliostat field boundary is constrained by the tower height, the receiver tilt angle and size and the heliostat efficiency factor which is the product of the annual cosine efficiency and the annual atmospheric transmission efficiency. With the new method, the heliostat can be placed with a higher efficiency and a faster response speed of the design and optimization can be obtained. A new module for the analysis of the aspherical heliostat is created in the new code. A new toroidal heliostat field is designed and analyzed by using the new code. Compared with the spherical heliostat, the solar image radius of the field is reduced by about 30% by using the toroidal heliostat if the mirror shape and the tracking are ideal. In addition, to maximize the utilization of land, suitable crops can be considered to be planted under heliostats. To evaluate the feasibility of the crop growth, a method for calculating the annual distribution of sunshine duration on the land surface is developed as well. (author)

Wei, Xiudong; Lu, Zhenwu; Yu, Weixing [Changchun Institute of Optics, Fine Mechanics and Physics of Chinese Academy of Sciences, Changchun 130033 (China); Wang, Zhifeng [The Key Laboratory of Solar Thermal Energy and Photovoltaic system, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190 (China)

2010-04-15T23:59:59.000Z

289

Verification survey report of the south waste tank farm training/test tower and hazardous waste storage lockers at the West Valley demonstration project, West Valley, New York  

SciTech Connect (OSTI)

A team from ORAU's Independent Environmental Assessment and Verification Program performed verification survey activities on the South Test Tower and four Hazardous Waste Storage Lockers. Scan data collected by ORAU determined that both the alpha and alpha-plus-beta activity was representative of radiological background conditions. The count rate distribution showed no outliers that would be indicative of alpha or alpha-plus-beta count rates in excess of background. It is the opinion of ORAU that independent verification data collected support the site?s conclusions that the South Tower and Lockers sufficiently meet the site criteria for release to recycle and reuse.

Weaver, Phyllis C.

2012-08-29T23:59:59.000Z

290

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

National Nuclear Security Administration (NNSA)

No. DE-AC04-94AL85000 No. DE-AC04-94AL85000 Modification No. M344 Page 2 of 19 1. Section B, Clause B-2, Contract Type and Value is amended as follows: a. Paragraph (b) is revised as follows to set forth the Estimated Cost for FY 2010 and to reflect the Total Estimated Cost, exclusive of Contractor's Fees: Contract Period Estimated Cost October 1, 2009 through September 30, 2010 $ 2,549,525,767 October 1, 2010 through $ To be negotiated annually September 30, 2012 TOTAL through FY10 $31,589,840,857 b. Paragraph (c) is revised as follows to set the Fixed Fee for FY 2010 and to reflect the total Fixed Fee under the contract: Contract Period Fixed Fee October 1, 2009 through September 30, 2010 $ 18,040,617 October 1, 2010 through $ To be negotiated annually

291

Pnp gene modification for improved xylose utilization in Zymomonas  

DOE Patents [OSTI]

The endogenous pnp gene encoding polynucleotide phosphorylase in the Zymomonas genome was identified as a target for modification to provide improved xylose utilizing cells for ethanol production. The cells are in addition genetically modified to have increased expression of ribose-5-phosphate isomerase (RPI) activity, as compared to cells without this genetic modification, and are not limited in xylose isomerase activity in the absence of the pnp modification.

Caimi, Perry G G; Qi, Min; Tao, Luan; Viitanen, Paul V; Yang, Jianjun

2014-12-16T23:59:59.000Z

292

California Code of Regulations, Title 8, Section 1646. Tower Scaffolds and Rolling Scaffolds, Wood or Metal. This information is provided free of charge by the Department of Industrial Relations from its  

E-Print Network [OSTI]

California Code of Regulations, Title 8, Section 1646. Tower Scaffolds and Rolling Scaffolds, Wood Scaffolds and Rolling Scaffolds, Wood or Metal. (a) The minimum dimension of the base of any free of Regulations, Title 8, Section 1646. Tower Scaffolds and Rolling Scaffolds, Wood or Metal. projecting end

Eisen, Michael

293

The effects of oxidative modifications on cardiac and skeletal muscle  

E-Print Network [OSTI]

George Brooks Professor Terry Machen Spring 2011 Abstract The Effects of Oxidative Modifications on Cardiac and Skeletal Muscle by Sean Michael Gross

Gross, Sean

2011-01-01T23:59:59.000Z

294

23.11.2014bo Akademi Univ -Thermal and Flow Engineering Piispankatu 8, 20500 Turku 1/36 7. Air conditioning, cooling towers  

E-Print Network [OSTI]

23.11.2014?bo Akademi Univ - Thermal and Flow Engineering Piispankatu 8, 20500 Turku 1/36 7. Air conditioning, cooling towers Ron Zevenhoven ?bo Akademi University Thermal and Flow Engineering Laboratory Engineering Piispankatu 8, 20500 Turku 2/36 7.1 Humid air #12;23.11.2014 ?bo Akademi Univ - Thermal and Flow

Zevenhoven, Ron

295

Green Building Technological Approaches for Re-alization from an Investors Perspective based on the MUNICH RE Tower as an Example  

E-Print Network [OSTI]

The Development ?MUNICH RE TOWER? was built from 2001-2003 by MEAG MUNICH ERGO AssetManagement GmbH un-der the Management of Hubert Garzorz. In 1999 the architects Allmann Sattler Wappner won the first prize of the architectural competition and were assigned...

Garzorz, H.

2008-01-01T23:59:59.000Z

296

LANIER, BRYAN KEITH. Study in the Improvement in Strength and Stiffness Capacity of Steel Multi-sided Monopole Towers Utilizing Carbon Fiber Reinforced  

E-Print Network [OSTI]

Multi-sided Monopole Towers Utilizing Carbon Fiber Reinforced Polymers as a Retrofitting Mechanism a strengthening solution utilizing high-modulus carbon fiber polymers as a retrofitting mechanism for monopole the behavior and validates the effectiveness of carbon fiber in increasing the flexural capacity of existing

297

Influence of a Modification of the Petcoke/Coal Ratio on the Leachability of Fly Ash and Slag Produced from a Large PCC Power Plant  

Science Journals Connector (OSTI)

Influence of a Modification of the Petcoke/Coal Ratio on the Leachability of Fly Ash and Slag Produced from a Large PCC Power Plant ... This study is focused on identifying the changes in the environmental quality of co-fired fly ash and slag induced by a modification of the petcoke/coal ratio. ... Petcoke was found to increase the leachable content of V and Mo and to enhance the mobility of S and As. ...

Maria Izquierdo; Oriol Font; Natalia Moreno; Xavier Querol; Frank E. Huggins; Esther Alvarez; Sergi Diez; Pedro Otero; Juan Carlos Ballesteros; Antonio Gimenez

2007-06-28T23:59:59.000Z

298

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

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

Internal Control Program DOE 0 414. 1C, CRD Quality Assurance DOE 0 422. 1, CRD Conduct of Operations DOE 0 43 5.1, Change 1, CRD Radioactive Waste Management DOE 0 442. 1A,CRD...

299

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

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

Internal Control Program DOE 0 414. 1C, CRD Quality Assurance DOE 0 422. 1, CRD Conduct of Operations DOE 0 43 5.1, Change 1, CRD Radioactive Waste Management DOEB0 442. 1...

300

Contract Modification Awarded for Legal Support | Department of Energy  

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

Contract Modification Awarded for Legal Support Contract Modification Awarded for Legal Support Contract Modification Awarded for Legal Support September 30, 2013 - 12:00pm Addthis Media Contact Lynette Chafin 513-246-0461 lynette.chafin@emcbc.doe.gov Cincinnati - The Department of Energy today awarded a contract modification to A R Biddle & Associates, Inc. of Peachtree City, GA to add scope for the contractor to analyze contract claims that are appealed to the Civilian Board of Contract Appeals (CBCA). The contract was awarded on February 15, 2013 for expert assistance in evaluating contract claims up to and including participation in alternative dispute resolution (ADR) proceedings. The modification will also increase the not-to-exceed value of the contract from $563,744.00 to approximately $1.2 million and will extend

Note: This page contains sample records for the topic "tower modifications changing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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301

SNR Denton US LLP 1301 K Street, NW Suite 600, East Tower Washington, DC 20005-3364 USA  

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

SNR Denton US LLP SNR Denton US LLP 1301 K Street, NW Suite 600, East Tower Washington, DC 20005-3364 USA Thomas C. Jensen Partner thomas.jensen@snrdenton.com D +1 202 408 3956 M 703 304 5211 T +1 202 408 6400 F +1 202 408 6399 snrdenton.com March 28, 2012 BY E-MAIL Lamont Jackson Office of Electricity Delivery and Energy Reliability Mail Code: OE-20 U.S. Department of Energy 1000 Independence Avenue SW Washington, DC 20585 Re: OE Docket No. RRTT-IR-001 Dear Mr. Jackson:: This letter is submitted on behalf of PPL Electric and Public Service Electric and Gas Company ("PSE&G") 1 ,(referred to herein as "the Companies") with respect to the Susquehanna-Roseland

302

Anderson Tower of States and Nematic Order of Spin-1 Bosonic Atoms on a 2D Lattice  

Science Journals Connector (OSTI)

We investigate the structure of the spectrum of antiferromagnetically coupled spin-1 bosons on a square lattice using degenerate perturbation theory and exact diagonalizations of finite clusters. We show that the superfluid phase develops an Anderson tower of states typical of nematic long-range order with broken SU(2) symmetry. We further show that this order persists into the Mott-insulating phase down to zero hopping for one boson per site and down to a critical hopping for two bosons per site, in agreement with mean-field and quantum Monte Carlo results. The connection with the transition between a fragmented condensate and a polar one in a single trap is briefly discussed.

Laurent de Forges de Parny; Hongyu Yang; Frdric Mila

2014-11-12T23:59:59.000Z

303

Observations of the Pulsar PSR B1951+32 with the Solar Tower Atmospheric Cherenkov Effect Experiment  

E-Print Network [OSTI]

We present the analysis and results of 12.5 hours of high-energy gamma-ray observations of the EGRET-detected pulsar PSR B1951+32 using the Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE). STACEE is an atmospheric Cherenkov detector, in Albuquerque, New Mexico, that detects cosmic gamma rays using the shower-front-sampling technique. STACEE's sensitivity to astrophysical sources at energies around 100 GeV allows it to investigate emission from gamma-ray pulsars with expected pulsed emission cutoffs below 100 GeV. We discuss the observations and analysis of STACEE's PSR 1951+32 data, accumulated during the 2005 and 2006 observing seasons.

J. Kildea; J. Zweerink; J. Ball; J. E. Carson; C. E. Covault; D. D. Driscoll; P. Fortin; D. M. Gingrich; D. S. Hanna; A. Jarvis; T. Lindner; C. Mueller; R. Mukherjee; R. A. Ong; K. Ragan; D. A. Williams

2007-10-25T23:59:59.000Z

304

Observations of the Pulsar PSR B1951+32 with the Solar Tower Atmospheric Cherenkov Effect Experiment  

E-Print Network [OSTI]

We present the analysis and results of 12.5 hours of high-energy gamma-ray observations of the EGRET-detected pulsar PSR B1951+32 using the Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE). STACEE is an atmospheric Cherenkov detector, in Albuquerque, New Mexico, that detects cosmic gamma rays using the shower-front-sampling technique. STACEE's sensitivity to astrophysical sources at energies around 100 GeV allows it to investigate emission from gamma-ray pulsars with expected pulsed emission cutoffs below 100 GeV. We discuss the observations and analysis of STACEE's PSR 1951+32 data, accumulated during the 2005 and 2006 observing seasons.

Kildea, J; Ball, J; Carson, J E; Covault, C E; Driscoll, D D; Fortin, P; Gingrich, D M; Hanna, D S; Jarvis, A; Lindner, T; Mller, C; Mukherjee, R; Ong, R A; Ragan, K; Williams, D A

2007-01-01T23:59:59.000Z

305

Measurable energy savings of installing variable frequency drives for cooling towers fans, compared to dual speed motors  

Science Journals Connector (OSTI)

Abstract In recent years the building management system (BMS) controllers have been used to control the operation of heating, ventilation, and air conditioning system in addition to lighting and some electrical equipment in order to save energy. In the water cooled system, the BMS controls the operation process of the cooling towers (CTs) fans of dual speed motors to maintain a constant leaving water temperature for different cooling loads and different ambient wet bulb temperature (WBT). This paper presents the effect of installing variable frequency drives (VFDs) for \\{CTs\\} fans in Kuwait during summer season on energy savings compared to dual speed control. The results have shown that with VFD mode, the reduction in water consumption was over 13% compared to the commonly used dual speed mode. More importantly, the combined power for the chillers and the \\{CTs\\} fans for the same amount of cooling produced were reduced by 5.8% in the VFD mode.

E. Al-Bassam; R. Alasseri

2013-01-01T23:59:59.000Z

306

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

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

15. PROJECT NO. (If applicable) 15. PROJECT NO. (If applicable) 213 See B':'ock 16C 10SC008480 6. ISSUED BY CODE 00518 7. ADMINISTERED BY (If other than lIem 6) CODE 100518 Oak Ridge Oak Ridge U.S. Department of Energy U.S. Department of Energy P.O. Box 2001 p.e. Box 2001 Oak Ridge TN 37831 Oak Ridge TN 37831 8. NAME AND ADDRESS OF CONTRACTOR (No .. street. county. State and ZIP Code) (X) 9A. AMENDMENT OF SOLICITATION NO. r-- o AK RIDGE ASSOCIATED UNIVERSITIES, INC. P.O. BOX 117 99. DATED (SEE ITEM 11) o AK RIDGE TN 37830-6218 X 10A. MODIFICATION OF CONTRACT/ORDER NO. DE-AC05-060R23100 10B. DATED (SEE ITEM 13) CODE 041152224 FACILITY CODE 12/21/2005 11. THIS ITEM ONLY APPLIES TO ' ... OF SOLICITATIONS The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended. is not extended.

307

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

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

3. EFFECTIVE DATE 3. EFFECTIVE DATE 225 See Block 16C 6. ISSUED BY CODE 00518 Oak Ridge U.S. Department of Energy P.O. Box 2001 Oak Ridge TN 37831 8. NAME AND ADDRESS OF CONTRACTOR (No .* street. county. State and ZIP Code) OAK RIDGE ASSOCIATED UNIVERSITIES, INC. P.O. BOX 117 OAK RIDGE TN 37830-6218 11. CONTRACT 10 CODE 4. REOUISITIONJPURCHASE REO. NO. 10SC009292 Item 07 7. ADMINISTERED BY (If other than Item 6) Oak Ridge U.S. Department of Energy P.O. Box 2001 Oak Ridge TN 37831 (x) 9A. AMENDMENT OF SOLICITATION NO. r- 98. DATED (SEE ITEM 11) I PAGE OF PAGES 1 I 1 15. PROJECT NO. (If applicable) CODE 100518 X 10A. MODIFICATION OF CONTRACT/ORDER NO. DE-AC05-060R23100 CODE 041152224 FACILITY CODE 108. DATED (SEE ITEM 13) 12/21/2005 11. THIS ITEM ONLY APPLIES TO AMEI DMENTS OF SOLICITATIONS

308

(3/13/14) SUMMARY OF MODIFICATIONS  

E-Print Network [OSTI]

a change of home department and the process by which these requests are reviewed current with developments in their fields so as to maintain the highest quality of instruction members may or may not receive remuneration, depending upon the specific nature of their duties and other

309

Selective posttranslational modification of phage-displayed polypeptides  

DOE Patents [OSTI]

The invention relates to posttranslational modification of phage-displayed polypeptides. These displayed polypeptides comprise at least one unnatural amino acid, e.g., an aryl-azide amino acid such as p-azido-L-phenylalanine, or an alkynyl-amino acid such as para-propargyloxyphenylalanine, which are incorporated into the phage-displayed fusion polypeptide at a selected position by using an in vivo orthogonal translation system comprising a suitable orthogonal aminoacyl-tRNA synthetase and a suitable orthogonal tRNA species. These unnatural amino acids advantageously provide targets for posttranslational modifications such as azide-alkyne [3+2]cycloaddition reactions and Staudinger modifications.

Tsao, Meng-Lin; Tian, Feng; Schultz, Peter

2013-02-05T23:59:59.000Z

310

Selective posttranslational modification of phage-displayed polypeptides  

DOE Patents [OSTI]

The invention relates to posttranslational modification of phage-displayed polypeptides. These displayed polypeptides comprise at least one unnatural amino acid, e.g., an aryl-azide amino acid such as p-azido-L-phenylalanine, or an alkynyl-amino acid such as para-propargyloxyphenylalanine, which are incorporated into the phage-displayed fusion polypeptide at a selected position by using an in vivo orthogonal translation system comprising a suitable orthogonal aminoacyl-tRNA synthetase and a suitable orthogonal tRNA species. These unnatural amino acids advantageously provide targets for posttranslational modifications such as azide-alkyne [3+2] cycloaddition reactions and Staudinger modifications.

Tsao, Meng-Lin; Tian, Feng; Schultz, Peter

2013-11-19T23:59:59.000Z

311

CF4 plasma surface modification of asymmetric hydrophilic polyethersulfone membranes for direct contact membrane distillation  

Science Journals Connector (OSTI)

This paper describes the use of CF4 plasma modification of a hydrophilic membrane into a hydrophobic one for membrane distillation. Plasma surface modification conditions were optimized with respect to plasma glow discharge power and treatment duration using a flat sheet PES membrane. The modified membranes were characterized by X-ray photoelectron spectroscopy (XPS), SEM, contact angle measurements, pore size distribution, liquid entry pressure and atomic force microscopy. Results revealed that the plasma modification converted hydrophilic membranes of a contact angle 0 into hydrophobic ones with water contact angle above 120. Fluorination was ascribed to the wettability change of the membrane from hydrophilic to hydrophobic via insertion and possibly deposition. Direct contact membrane distillation of the hollow fibers using 4% NaCl solution yielded a water flux of 45.4kg/m2h at a feed temperature of 63.3C. A rather high evaporation efficiency of the membrane distillation process was estimated in comparison with literature results. Direct contact membrane distillation (DCMD) stability test showed a water flux of 42.1kg/m2h using 4wt% NaCl as feed (at the temperature of 60.50.2C). No leakage was observed for 54h indicating a stable membrane performance. The high evaporation efficiency and water flux were ascribed most probably to the high porosity of the base membrane.

Xing Wei; Baolong Zhao; Xue-Mei Li; Zhouwei Wang; Ben-Qiao He; Tao He; Biao Jiang

2012-01-01T23:59:59.000Z

312

DOE to Hold Public Information Meetings On Proposed Permit Modification  

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

Meeting Meeting On Proposed Permit Modification CARLSBAD, N.M., January 31, 2001 - The public is invited to comment on a proposed modification to the Hazardous Waste Facility Permit for the Waste Isolation Pilot Plant (WIPP). Submittal of the proposed modification to the New Mexico Environment Department (NMED) by the U.S. Department of Energy (DOE) begins a formal review process that includes a 60-day public comment period and a public information meeting. In its request, DOE proposes alternative methods of quality control for radiography, which is currently done through visual examination. The proposed alternative is Digital Radiography/Computed Tomography. The modification would allow DOE to take advantage of new technology that enables analysis of the contents of

313

EIS-0435: Modification of the Groton Generation Station Interconnection  

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

5: Modification of the Groton Generation Station 5: Modification of the Groton Generation Station Interconnection Agreement, Brown County, South Dakota EIS-0435: Modification of the Groton Generation Station Interconnection Agreement, Brown County, South Dakota Summary This EIS evaluates the environmental impacts of a proposal for DOE's Western Area Power Administration to modify its Large Generator Connection Agreement for the Groton Generation Station in Brown County, South Dakota. The modification would allow Basin Electric Power Cooperative, which operates the generation station, to produce power above the current operating limit of 50 average megawatts. Public Comment Opportunities No public comment opportunities available at this time. Documents Available for Download June 3, 2011 EIS-0435: Final Environmental Impact Statement

314

Tropical air mass modification over water (Gulf of Mexico Region)  

E-Print Network [OSTI]

TROPICAL AIR MASS MODIFICATION OVER WA~ (Gulf of Mexico Region) By Ernest Frederick Sorgnit A Thesis Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fu]Afillment of the requirements...

Sorgnit, Ernest Frederick

1952-01-01T23:59:59.000Z

315

A study of housing modification in East Boston  

E-Print Network [OSTI]

This thesis deals with inhabitants' modifications of the 19th century sidehall houses in East Boston, now a predominantly Italian neighborhood. On the basis of the data obtained by a survey and observations, the practical ...

Yokouchi, Toshihito

1980-01-01T23:59:59.000Z

316

The stability and chemical modification of synthetically useful enzymes  

E-Print Network [OSTI]

THE STABILITY AND CHEMICAL MODIFICATION OF SYNTHETICALLY USEFUL ENZYMES A Thesis by GORDON LEE SMITH Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... May 1988 Major Subject: Chemistry THE STABILITY AND CHEMICAL MODIFICATION OF STATICALLY USEFUL ENZYMES A Thesis by GORDON LEE SMITH Approved as to style and content by: Chi-Huey ong (Chairman of Committee) A. Ian Scott (Member) B. J...

Smith, Gordon Lee

2012-06-07T23:59:59.000Z

317

Tank Operations Contract No. DE-A C27-08RV14800 Modification  

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

Modification: The purpose of this modification is to revise Section J.4, Performance and Evaluation Measurement Plan (PEMP) to incorporate an additional performance measure under...

318

E-Print Network 3.0 - age-induced protein modifications Sample...  

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

organisms Lack of post- translational modifications Endotoxins... eukaryotic protein folding and modification machinery Protein ExpressionProtein Expression 12;2 Rapid...

319

Change Log  

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

Change Log Change Log Change Log NERSC-8 / Trinity Benchmarks Change Log 09/03/2013 Correction applied to MiniDFT web-page (to remove inconsistency with MiniDFT README). Capability Improvement measurements do not require 10,000 MPI ranks per k-point. 08/06/2013 Various pages have changed to remove "draft" status 08/02/2013 Correction added to FLOP Counts for "Small" Single-Node Miniapplication Tests page 07/12/2013 README files updated for IOR benchmark to correct an error in wording (no code changes); README file updated for osu-micro-benchmarks (OMB) changing the tests required and conditions including reinserting some tests that had been deleted earlier 07/05/2013 README updated for mpimemu benchmark; Revised version of benchmark results spreadsheet (linked on SSP web page);

320

Fast Reactor Subassembly Design Modifications for Increasing Electricity Generation Efficiency  

SciTech Connect (OSTI)

Suggested for Track 7: Advances in Reactor Core Design and In-Core Management _____________________________________________________________________________________ Fast Reactor Subassembly Design Modifications for Increasing Electricity Generation Efficiency R. Wigeland and K. Hamman Idaho National Laboratory Given the ability of fast reactors to effectively transmute the transuranic elements as are present in spent nuclear fuel, fast reactors are being considered as one element of future nuclear power systems to enable continued use and growth of nuclear power by limiting high-level waste generation. However, a key issue for fast reactors is higher electricity cost relative to other forms of nuclear energy generation. The economics of the fast reactor are affected by the amount of electric power that can be produced from a reactor, i.e., the thermal efficiency for electricity generation. The present study is examining the potential for fast reactor subassembly design changes to improve the thermal efficiency by increasing the average coolant outlet temperature without increasing peak temperatures within the subassembly, i.e., to make better use of current technology. Sodium-cooled fast reactors operate at temperatures far below the coolant boiling point, so that the maximum coolant outlet temperature is limited by the acceptable peak temperatures for the reactor fuel and cladding. Fast reactor fuel subassemblies have historically been constructed using a large number of small diameter fuel pins contained within a tube of hexagonal cross-section, or hexcan. Due to this design, there is a larger coolant flow area next to the hexcan wall as compared to flow area in the interior of the subassembly. This results in a higher flow rate near the hexcan wall, overcooling the fuel pins next to the wall, and a non-uniform coolant temperature distribution. It has been recognized for many years that this difference in sodium coolant temperature was detrimental to achieving greater thermal efficiency, since it causes the fuel pins in the center of the subassembly to operate at higher temperatures than those near the hexcan walls, and it is the temperature limit(s) for those fuel pins that limits the average coolant outlet temperature. Fuel subassembly design changes are being investigated using computational fluid dynamics (CFD) to quantify the effect that the design changes have on reducing the intra-subassembly coolant flow and temperature distribution. Simulations have been performed for a 19-pin test subassembly geometry using typical fuel pin diameters and wire wrap spacers. The results have shown that it may be possible to increase the average coolant outlet temperature by 20 C or more without changing the peak temperatures within the subassembly. These design changes should also be effective for reactor designs using subassemblies with larger numbers of fuel pins. R. Wigeland, Idaho National Laboratory, P.O. Box 1625, Mail Stop 3860, Idaho Falls, ID, U.S.A., 83415-3860 email roald.wigeland@inl.gov fax (U.S.) 208-526-2930

R. Wigeland; K. Hamman

2009-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower modifications changing" 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

Behavior Modification as a Sustainable Design Technique  

E-Print Network [OSTI]

ESL-KT-13-12-25 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 Empowerment: Dont control people, enable them to change Real time Granular Intuitive Engagement: They wont care unless they are engaged..., they must also care. Real Awareness How To Manifest Awareness ESL-KT-13-12-25 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 What is Curb? ESL-KT-13-12-25 CATEE 2013: Clean Air Through Energy Efficiency...

Norwood, E.

2013-01-01T23:59:59.000Z

322

High-temperature Thermal Storage System for Solar Tower Power Plants with Open-volumetric Air Receiver Simulation and Energy Balancing of a Discretized Model  

Science Journals Connector (OSTI)

Abstract This paper describes the modeling of a high-temperature storage system for an existing solar tower power plant with open volumetric receiver technology, which uses air as heat transfer medium (HTF). The storage system model has been developed in the simulation environment Matlab/Simulink. The storage type under investigation is a packed bed thermal energy storage system which has the characteristics of a regenerator. Thermal energy can be stored and discharged as required via the HTF air. The air mass flow distribution is controlled by valves, and the mass flow by two blowers. The thermal storage operation strategy has a direct and significant impact on the energetic and economic efficiency of the solar tower power plants.

Valentina Kronhardt; Spiros Alexopoulos; Martin Reiel; Johannes Sattler; Bernhard Hoffschmidt; Matthias Hnel; Till Doerbeck

2014-01-01T23:59:59.000Z

323

Inadvertent Climate Modification Due to Anthropogenic Lead  

SciTech Connect (OSTI)

The relationship between atmospheric particulate matter and the formation of clouds is among the most uncertain aspects of our current understanding of climate change1. One specific question that remains unanswered is how anthropogenic particulate emissions are affecting the nucleation of ice crystals. Satellites show ice clouds cover more than a third of the globe2 and models suggest that ice nucleation initiates the majority of terrestrial precipitation3. It is therefore not possible to adequately understand either climate change or the global water cycle without understanding ice nucleation. Here we show that lead-containing particles are among the most efficient ice nucleating substances commonly found in the atmosphere. Field observations were conducted with mass spectrometry and electron microscopy at two remote stations on different continents, far removed from local emissions. Laboratory studies within two cloud chambers using controlled experimental conditions support the field data. Because the dominate sources of particulate lead are anthropogenic emissions such as aviation fuel, power generation, smelting, and the re-suspension of residue from tetra-ethyl leaded gasoline4, it is likely that cloud formation and precipitation have been affected when compared to pre-industrial times. A global climate model comparing pre-industrial and anthropogenically perturbed conditions shows that lead-containing particles may be increasing the outgoing longwave radiation by 0.2 to 0.8 W m-2, thereby offsetting a portion of the warming attributed to greenhouse gases1.

Cziczo, Daniel J.; Stetzer, Olaf; Worringen, Annette; Ebert, Martin; Weinbruch, Stephan; Kamphus, M.; Gallavardin, S. J.; Curtius, J.; Borrmann, S.; Froyd, Karl D.; Mertes, S.; Mohler, Ottmar; Lohmann, U.

2009-05-01T23:59:59.000Z

324

American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration Project 209 Control Tower and Support Building Oakland, CA  

SciTech Connect (OSTI)

This report represents findings of a design review team that evaluated construction documents (at the 70% level) and operating specifications for a new control tower and support building that will be build at Oakland, California by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specification that would result in additional energy savings for the FAA that would not have otherwise occurred.

Arends, J.; Sandusky, William F.

2010-03-01T23:59:59.000Z

325

American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration Project 209 - Control Tower and Support Building, Las Vegas, NV  

SciTech Connect (OSTI)

This report represents findings of a design review team that evaluated construction documents (at the 70% level) and operating specifications for a new control tower and support building that will be built in Las Vegas, Nevada by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specification that would result in additional energy savings for the FAA that would not have otherwise occurred.

Arends, J.; Sandusky, William F.

2010-03-31T23:59:59.000Z

326

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 2. AMENDMENT/MODIFICATION NO.  

E-Print Network [OSTI]

: The Department of Energy (DOE), Office of Science (SC), Pacific Northwest Site Office (PNSO) is modifying BY CODE U.S. Department of Energy Pacific Northwest Site Office Post Office Box 350 Richland, WA 99352 3 CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT

327

High Energy Gamma-Ray Observations of the Crab Nebula and Pulsar with the Solar Tower Atmospheric Cherenkov Effect Experiment  

E-Print Network [OSTI]

The Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE) is a new ground-based atmospheric Cherenkov telescope for gamma-ray astronomy. STACEE uses the large mirror area of a solar heliostat facility to achieve a low energy threshold. A prototype experiment which uses 32 heliostat mirrors with a total mirror area of ~ 1200\\unit{m^2} has been constructed. This prototype, called STACEE-32, was used to search for high energy gamma-ray emission from the Crab Nebula and Pulsar. Observations taken between November 1998 and February 1999 yield a strong statistical excess of gamma-like events from the Crab, with a significance of $+6.75\\sigma$ in 43 hours of on-source observing time. No evidence for pulsed emission from the Crab Pulsar was found, and the upper limit on the pulsed fraction of the observed excess was E_{th}) = (2.2 \\pm 0.6 \\pm 0.2) \\times 10^{-10}\\unit{photons cm^{-2} s^{-1}}. The observed flux is in agreement with a continuation to lower energies of the power law spectrum seen at TeV energies.

STACEE Collaboration; S. Oser; D. Bhattacharya; L. M. Boone; M. C. Chantell; Z. Conner; C. E. Covault; M. Dragovan; P. Fortin; D. T. Gregorich; D. S. Hanna; R. Mukherjee; R. A. Ong; K. Ragan; R. A. Scalzo; D. R. Schuette; C. G. Theoret; T. O. Tumer; D. A. Williams; J. A. Zweerink

2000-06-21T23:59:59.000Z

328

Sensitivity study of explosive nucleosynthesis in Type Ia supernovae: I. Modification of individual thermonuclear reaction rates  

E-Print Network [OSTI]

We explore the sensitivity of the nucleosynthesis due to type Ia supernovae with respect to uncertainties in nuclear reaction rates. We have adopted a standard one-dimensional delayed detonation model of the explosion of a Chandrasekhar-mass white dwarf, and have post-processed the thermodynamic trajectories of every mass-shell with a nucleosynthetic code, with increases (decreases) by a factor of ten on the rates of 1196 nuclear reactions. We have computed as well hydrodynamic models for different rates of the fusion reactions of 12C and of 16O. For selected reactions, we have recomputed the nucleosynthesis with alternative prescriptions for their rates taken from the JINA REACLIB database, and have analyzed the temperature ranges where modifications of their rates have the strongest effect on nucleosynthesis. The nucleosynthesis resulting from the Type Ia supernova models is quite robust with respect to variations of nuclear reaction rates, with the exception of the reaction of fusion of 12C nuclei. The energy of the explosion changes by less than \\sim4%. The changes in the nucleosynthesis due to the modification of the rates of fusion reactions are as well quite modest, for instance no species with a mass fraction larger than 0.02 experiences a variation of its yield larger than a factor of two. We provide the sensitivity of the yields of the most abundant species with respect to the rates of the most intense reactions with protons, neutrons, and alphas. In general, the yields of Fe-group nuclei are more robust than the yields of intermediate-mass elements. Among the charged particle reactions, the most influential on supernova nucleosynthesis are 30Si + p \\rightleftarrows 31P + {\\gamma}, 20Ne + {\\alpha} \\rightleftarrows 24Mg + {\\gamma}, and 24Mg + {\\alpha} \\rightleftarrows 27Al + p. The temperatures at which a modification of their rate has a larger impact are in the range 2 < T < 4 GK. (abridged)

Eduardo Bravo; Gabriel Martnez-Pinedo

2012-04-09T23:59:59.000Z

329

Effects of the pulse duration in laser modification of nano-sized WTi film on Si  

Science Journals Connector (OSTI)

A study of morphological and composition changes of the WTi/Si system induced by nanosecond and picosecond laser pulses is presented. A 190nm thick WTi film was deposited on a silicon substrate of n-type (100). The pulsed laser systems used were: nanosecond TEA CO2 laser (emission, 10.6m; pulse FWHM; pulse duration 120ns) and picosecond Nd:YAG laser (emission, 532nm; pulse FWHM; pulse duration 40ps). During experiments the used fluences (?) had similar values, ?1 = 20Jcm ? 2 in case of the TEA CO2 laser and ?2 = 16Jcm ? 2 for the Nd:YAG laser. The laser-induced morphological and composition modifications showed a dependence on pulse duration. Generally, the following morphological changes were observed: (i)ablation/exfoliation of the WTi thin film, (ii)appearance of hydrodynamic features such as resolidified material, and (iii)formation of nano-sized grains and globules. Overall morphological modifications were more pronounced after the picosecond laser action. The surface composition analysis showed a quite different distribution of sample components depending on the pulse duration. Formation of the silicon dioxide (SiO2) was recorded only in the case of irradiation of the WTi/Si system by picosecond laser pulses.

Suzana Petrovi?; D Peruko; D Milovanovi?; J Kova?; M ?ekada; P Panjan; B Gakovi?; M Trtica

2010-01-01T23:59:59.000Z

330

Post-translational modifications induce significant yet not extreme changes to protein structure  

Science Journals Connector (OSTI)

......intrinsically disordered protein regions, i...associated to disordered regions either...large number of proteins do contain PTM...pre-existing structural ensemble (our preliminary...RDC-derived ubiquitin ensemble in solution...C-terminal domain. Protein Sci. (2005...intrinsically disordered proteins. PLoS......

Fuxiao Xin; Predrag Radivojac

2012-11-15T23:59:59.000Z

331

Continuous Change Institutional Change Principle  

Broader source: Energy.gov [DOE]

Because it takes time to establish institutional change, Federal agencies need multiyear plans that continuously work to achieve, reinforce, and improve significant and persistent sustainability...

332

Phase transformations and structural modifications induced by heating in microporous materials  

Science Journals Connector (OSTI)

The thermal behaviour of microporous materials is relevant both for their characterization and for their application, and varies dramatically from one material to another. This paper intends to give a picture of their behaviour and to highlight analogies and differences in these materials as a function of their chemistry and topology. The information on their response to heating and dehydration/calcinations, even if still scanty and sometimes controversial, shows that some materials undergo dehydration-induced decrease in volume which can be dramatic or very scarce as a function of the extraframework content. These changes in volume can be partially or completely irreversible if they involve structural modifications of the tetrahedral framework. It is to highlight that topological changes are always due to the so called face sharing tetrahedral process.

Alberto Alberti; Annalisa Martucci

2005-01-01T23:59:59.000Z

333

Risk analysis of analytical validations by probabilistic modification of FMEA  

Science Journals Connector (OSTI)

Risk analysis is a valuable addition to validation of an analytical chemistry process, enabling not only detecting technical risks, but also risks related to human failures. Failure Mode and Effect Analysis (FMEA) can be applied, using a categorical risk scoring of the occurrence, detection and severity of failure modes, and calculating the Risk Priority Number (RPN) to select failure modes for correction. We propose a probabilistic modification of FMEA, replacing the categorical scoring of occurrence and detection by their estimated relative frequency and maintaining the categorical scoring of severity. In an example, the results of traditional FMEA of a Near Infrared (NIR) analytical procedure used for the screening of suspected counterfeited tablets are re-interpretated by this probabilistic modification of FMEA. Using this probabilistic modification of FMEA, the frequency of occurrence of undetected failure mode(s) can be estimated quantitatively, for each individual failure mode, for a set of failure modes, and the full analytical procedure.

D.M. Barends; M.T. Oldenhof; M.J. Vredenbregt; M.J. Nauta

2012-01-01T23:59:59.000Z

334

Contract Number: DE-AC05-76RL01830 Modification M705  

E-Print Network [OSTI]

#12;#12;Contract Number: DE-AC05-76RL01830 Modification M705 #12;Contract Number: DE-AC05-76RL01830 Modification M705 #12;Contract Number: DE-AC05-76RL01830 Modification M705 #12;Contract Number: DE-AC05-76RL01830 Modification M705 #12;Contract Number: DE-AC05-76RL01830 Modification M705 #12;Contract Number: DE

335

Histological changes in the bovine following treatment with progestogens  

E-Print Network [OSTI]

. 22:363. Hackett, A. J. and H. D. Hafs. 1969. Biochemical and morphological changes in bovine tubular genitalia during the estrous cycle. J. Anim. Sci. 29:35. Harms, P. G. and P. V. Malven. 1969. Modification of bovine luteal function by exogenous.... 22:363. Hackett, A. J. and H. D. Hafs. 1969. Biochemical and morphological changes in bovine tubular genitalia during the estrous cycle. J. Anim. Sci. 29:35. Harms, P. G. and P. V. Malven. 1969. Modification of bovine luteal function by exogenous...

Sprott, L. R

2012-06-07T23:59:59.000Z

336

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 2. AMENDMENT/MODIFICATION NO.  

E-Print Network [OSTI]

: The Department of Energy (DOE), Office of Science (SC), Pacific Northwest Site Office (PNSO) is modifying BY CODE U.S. Department of Energy Pacific Northwest Site Office Post Office Box 350 Richland, WA 99352 3 as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO AUTHORITY OF FAR 43

337

AME:NDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

National Nuclear Security Administration (NNSA)

AME:NDMENT OF SOLICITATION/MODIFICATION OF CONTRACT AME:NDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT 10 CODE PAGE 1 OF 224 PAGES 2. AMENDMENT/MODIFICATION NO. M202 3. EFFECTIVE DATE October 1, 2003 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable) 6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE U.s. Department of Energy N.itional Nuclear Security Administration Sandia Site Office Mail Stop 0184 P.O. Box 5400 AlbuauerQue, NM 87185-5400 8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, state, ZIP Code) 9A. AMENDMENT OF SOLICITATION NO. Sandia Corporation P. O. Box 5800 Albuquerque, NM 87185 98. DATED (SEE ITEM 11) 10A. MODIFICATION OF CONTRACT/ORDER NO. DE-ACO4-94AL85000 108. DATED (SEE ITEM 13) October 1, 1993 CODE II-ACIL~ CODE 11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

338

JT-60 Modification Plan for Long Pulse Advanced Tokamak Research  

E-Print Network [OSTI]

JT-60 Modification Plan for Long Pulse Advanced Tokamak Research Colloquium of Max Planck Institute as one step to DEMO · Advanced tokamak researches · Scientific achievements of JT-60 and its phase Tokamak Commercializa tion pease JT-60 Decision system of prototype reactor Electricity Generation

339

WEATHER MODIFICATION BY CARBON DUST ABSORPTION OF SOLAR ENERGY  

E-Print Network [OSTI]

WEATHER MODIFICATION BY CARBON DUST ABSORPTION OF SOLAR ENERGY by WM. M. GRAY, WM. M. FRANK, M OF SOLAR ENERGY by w. M. Gray, W. M. Frank, M. L. Corrin and C. A. Stokes Department of Atmospheric Science interception of solar energy. Growing population pressures and predicted future global food shortages dictate

Gray, William

340

Structural modifications of timothy lignin by in vitro rumen fermentation  

E-Print Network [OSTI]

Structural modifications of timothy lignin by in vitro rumen fermentation T Kondo, T Ohshita, T Kyuma Tohoku National Agricultural Experiment Station, Shimokuriyagawa, Morioka 020-01, Japan Lignin degradation of forage fibers. The nutritional effect of forage lignin is closely related to its structure

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "tower modifications changing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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341

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT...  

National Nuclear Security Administration (NNSA)

IZ, zP u>ll 30-105 STANDARD FORM 30 (REV. 10-83) temp03.dot Prescribed by GSA FAR (48 CFR) 53.243 Los Alamos National Security, LLC Contract No. DE-AC52-06NA25396 Modification...

342

American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration Project 209 Control Tower and Support Building, Reno, Nevada  

SciTech Connect (OSTI)

Pacific Northwest National Laboratory (PNNL) and Redhorse Corporation (Redhorse) conducted an energy audit on the Federal Aviation Administration (FAA) control tower and base building in Reno, Nevada. This report presents the findings of the energy audit team that evaluated construction documents and operating specifications (at the 100% level) and completed a site visit. The focus of the review was to identify measures that could be incorporated into the final design and operating specifications that would result in additional energy savings for the FAA that would not have otherwise occurred.

Arends, J.; Sandusky, William F.

2010-06-30T23:59:59.000Z

343

Rock mass modification around a nuclear waste repository in welded tuff  

SciTech Connect (OSTI)

This report presents the results of numerical analyses to estimate the extent of rock mass modification resulting from the presence of a High Level Waste (HLW) repository. Changes in rock mass considered are stresses and joint deformations resulting from disposal room excavation and thermal efffects induced by the heat generated by nuclear waste. rock properties and site conditions are taken from the Site Characterization Plan Conceptual Design Report for the potential repository site at Yucca Mountain, Nevada. Analyses were conducted using boundary element and distinct element methods. Room-scale models and repository-scale models were investigated for up to 500 years after waste emplacement. Results of room-scale analyses based on the thermoelastic boundary element model indicate that a zone of modified rock develops around the disposal rooms for both vertical and horizontal waste emplacement. This zone is estimated to extend a distance of roughly two room diameters from the room surface. Results from the repository-scale model, which are based on the thermoelastic boundary element model and the distinct element model, indicate a zone with modified rock mass properties starting approximately 100 m above and below the repository, with a thickness of approximately 200 m above and 150 m below the repository. Slip-prone subhorizontal features are shown to have a substantial effect on rock mass response. The estimates of rock mass modification reflect uncertainties and simplifying assumptions in the models. 32 refs., 57 figs., 1 tab.

Mack, M.G.; Brandshaug, T.; Brady, B.H.

1989-08-01T23:59:59.000Z

344

Going beyond the limits: Genetic modification of livestock and dissolution of ancient boundaries  

Science Journals Connector (OSTI)

The intensive pursuit of biological efficiency has dominated animal science over recent decades. This paradigm is driven largely by economic criteria for lower resource input, increased output of livestock products, faster turnover and reduced costs to the consumer. Science has broken many economic boundaries. But disturbing stability always exacts a price: hidden costs, health, environment, welfare, biodiversity, the rural poor and the carbon footprint. The scientific mission to enhance food production is now facing new horizons at the molecular level for radical change in the life processes of animals. This quest for the genetic modification of livestock is unchartered territory and will also have widespread negative consequences. Two types of boundaries are challenged: ancient Biological boundaries and ancient Man-Made boundaries. The key biological boundary is between species and is now violated by genetic modification; key Man-Made boundaries include recognition of moral autonomy, rule of law and the qualitative difference between humanity and other species. All these ancient boundaries are foundational to sustainable societies and have been tested over huge time spans. Dissolution of these boundaries needs more caution than currently being exercised. Why? Because the scientific models of the genome used for genetic modification are proving to be wrong and inadequate. Emerging genome research reveals that control of gene expression is far more complex than the models used so far. Food products from genetically modified livestock are now in preparation for the human food chain without adequate testing and regulation and against the expressed wishes of consumers. Can the species produced by millions of years of natural selection be redesigned safely with inadequate knowledge? Do scientists have to redesign the inner molecular universe simply because we have the tools? Are unsubstantiated short-term economic arguments sufficient to justify dissolution of ancient boundaries and stable genomes that have stood the test of time in sustaining life? There must be a deeper answer if only because we are no more likely than natural selection to achieve new adaptive stability without enormous cost. Breaching these biological boundaries goes beyond biology and economics by opening the door to transhumanism which already has a dark history. Genetic modification of animals presents issues of risk, accountability, authority, power, ownership, and morality, the nature of animals and the meaning and purpose of humanity all of which are explored. Scientists are called to recognize and act upon their social responsibilities.

John Hodges

2010-01-01T23:59:59.000Z

345

Subdue solids in towers  

SciTech Connect (OSTI)

Many distillation, absorption, and stripping columns operate with solids present in the system. The presence of solids may be either intentional or unintentional. But, in all cases, the solids must be handled or tolerated by the vapor/liquid mass-transfer equipment. Such solids should be dealt with by a combination of four methods. From most favorable to least favorable, these are: (1) keep the solids out; (2) keep the solids moving; (3) put the solids somewhere harmless; and (4) make it easier to clean the hardware. The key precept for all these approaches is the realization that solids present in a system just don't disappear. In this article, the authors review the techniques and design issues involved in making a vapor/liquid mass-transfer system operate with solids present. They assume that the solids cannot be kept out, eliminating the first choice. The type of mass-transfer service does not matter. The same principles apply equally well to distillation, adsorption, and stripping. They include equipment design criteria based on the methods outlined above, as well as detailed recommendations for each of the major equipment choices that can be made for mass-transfer devices. Then, they illustrate the approach via an example--a vinyl chloride monomer (VCM) unit having solids as an inherent part of its feed.

Sloley, A.W.; Martin, G.R.

1995-01-01T23:59:59.000Z

346

Education Tower Emergency Instructions  

E-Print Network [OSTI]

Security at 403-220-5333 from a safe location Hazardous Materials Spill Only attempt to clean up a spill to an armed assailant, run away from the subject Hide - if you cannot flee, or do not know the location of the shooter, hide in a locked or barricaded room and turn out the lights Fight ­ if confronted by the shooter

de Leon, Alex R.

347

IPAGE OF PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

National Nuclear Security Administration (NNSA)

. CONTRACT 10 CODE . CONTRACT 10 CODE IPAGE OF PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1 I 1 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 15. PROJECT NO. (If appl/cab/e) 216 See Block 16C 6. ISSUED BY CODE 05007 7. ADMINISTERED BY (ffother than Ilem 6) CODE \05007 NNSA/Pantex Site Office NNSA/Pantex Site Office U.S. Department of Energy U.S. Department of Energy NNSA/Pantex Site Office NNSA/Pantex Site Office P.O. Box 30030 P.O. Box 30030 Amarillo TX 79120-0030 Amarillo TX 79120-0030 8. NAME AND ADDRESS OF CONTRACTOR (No., streot, county, S1ste end ZIP Code) (x) 9A. AMENDMENT OF SOLICITATION NO. r ABCOCK & WILCOX TECHNICAL SERVICES PANTEX. L L C ttn: GARY ALLEN 98. DATED (SEE ITEM 11) .0. BOX 30020 AMARILLO TX 791200000

348

Effects of Structural Modification on Ionic Liquid Physical Properties  

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

Effect of Structural Modification on the Physical Properties Effect of Structural Modification on the Physical Properties of Various Ionic Liquids S. I. Lall-Ramnarine, J. L. Hatcher, A. Castano, M. F. Thomas, and J. F. Wishart in "ECS Transactions - Las Vegas, NV, Vol. 33, Molten Salts and Ionic Liquids 17" D. Fox et al., Eds.; The Electrochemical Society, Pennington, NJ, (2010) pp 659 - 665. [Find paper at ECS] Abstract: A few classes of ionic liquids were synthesized and investigated for their physical properties as a function of structural variation. Bis(oxalato)borate (BOB) and bis(trifluoromethylsulfonyl)imide (NTf2) ionic liquids (ILs) containing pyridinium, 4-dimethylaminopyridinium (DMAP) and pyrrolidinium cations bearing alkyl, benzyl, hydroxyalkyl and alkoxy substituents, were prepared from the corresponding halide salts. The

349

An Application of VRP Algorithms with Original Modifications  

E-Print Network [OSTI]

A common problem in the Maquiladora industry is that the logistics models developed for the original plant (which, most often, had been in the US) were simply transported along with the plant to Mexico, without considerations for the vast differences between local and global business models. This paper documents an improvement project with one such maquiladora, TRWs air-bag plant in Chihuahua. The goal of the project was to reduce transportation costs through the development of a routing computer application that would efficiently solve TRW-Chihuahuas vehicle routing problem. The application is composed of several common routing algorithms, most of them with modifications developed specifically for TRW-Chihuahuas problem. The algorithms and modifications are presented in detail throughout this paper. Thus far, the project has resulted in significant savings for TRW-Chihuahua (about a 20% reduction on annual transportation costs). Most importantly, it has helped instill the mentality of

Melissa Restori

350

Life Cycle Environmental Impacts Resulting from the Manufacture of the Heliostat Field for a Reference Power Tower Design in the United States: Preprint  

SciTech Connect (OSTI)

Life cycle assessment (LCA) is recognized as a useful analytical approach for quantifying environmental impacts of renewable energy technologies, including concentrating solar power (CSP). An LCA accounts for impacts from all stages in the development, operation, and decommissioning of a CSP plant, including such upstream stages as the extraction of raw materials used in system components, manufacturing of those components, and construction of the plant. The National Renewable Energy Laboratory is conducting a series of LCA studies for various CSP technologies. This paper contributes to a thorough LCA of a 100 MWnet molten salt power tower CSP plant by estimating the environmental impacts resulting from the manufacture of heliostats. Three life cycle metrics are evaluated: greenhouse gas emissions, water consumption, and cumulative energy demand. The heliostat under consideration (the 148 m2 Advanced Thermal Systems heliostat) emits 5,300 kg CO2eq, consumes 274 m3 of water, and requires 159,000 MJeq during its manufacture. Future work will incorporate the results from this study into the LCA model used to estimate the life cycle impacts of the entire 100 MWnet power tower CSP plant.

Heath, G.; Burkhardt, J.; Turchi, C.

2012-10-01T23:59:59.000Z

351

Acoustic Imaging Evaluation of Juvenile Salmonid Behavior in the Immediate Forebay of the Water Temperature Control Tower at Cougar Dam, 2010  

SciTech Connect (OSTI)

This report presents the results of an evaluation of juvenile Chinook salmon (Oncorhynchus tshawytscha) behavior at Cougar Dam on the south fork of the McKenzie River in Oregon in 2010. The study was conducted by the Pacific Northwest National Laboratory for the U.S. Army Corps of Engineers (USACE). The overall goal of the study was to characterize juvenile salmonid behavior and movement patterns in the immediate forebay of the Water Temperature Control (WTC) tower of the dam for USACE and fisheries resource managers use in making decisions about bioengineering designs for long-term structures and/or operations to facilitate safe downstream passage for juvenile salmonids. We collected acoustic imaging (Dual-Frequency Identification Sonar; DIDSON) data from March 1, 2010, through January 31, 2011. Juvenile salmonids (hereafter, called 'fish') were present in the immediate forebay of the WTC tower throughout the study. Fish abundance index was low in early spring (<200 fish per sample-day), increased in late April, and peaked on May 19 (6,039 fish). A second peak was observed on June 6 (2904 fish). Fish abundance index decreased in early June and remained low in the summer months (<100 fish per sample-day). During the fall and winter, fish numbers varied with a peak on November 10 (1881 fish) and a minimum on December 7 (12 fish). A second, smaller, peak occurred on December 22 (607 fish). A univariate statistical analysis indicated fish abundance index (log10-transformed) was significantly (P<0.05) positively correlated with forebay elevation, velocity over the WTC tower intake gate weirs, and river flows into the reservoir. A subsequent multiple regression analysis resulted in a model (R2=0.70) predicting fish abundance (log-transformed index values) using two independent variables of mean forebay elevation and the log10 of the forebay elevation range. From the approximate fish length measurements made using the DIDSON imaging software, the average fish length during early spring 2010 was 214 {+-} 86 mm (standard deviation). From May through early November, the average fish length remained relatively consistent (132 {+-} 54 mm), after which average lengths increased to 295 {+-} 148 mm for mid-November though early December. From mid-December through January the average fish length decreased to 151 {+-} 76 mm. Milling in front of the WTC tower was the most common fish behavior observed throughout the study period. Traversing along the front of the tower, east-to-west and west-to-east, was the next common behavior. The percentage of fish events showing movement from the forebay to the tower or from the tower to the forebay was generally low throughout the spring, summer, and early fall (0 to 30% for both directions combined, March through early November). From mid-November 2010 through the end of the study (January 31, 2011), the combined percentages of fish moving into and out of the tower were higher (25 to 70%) than during previous months of the study. Schooling behavior was most distinct in the spring. Schooling events were present in 30 to 96% of the fish events during that period, with a peak on May 19. Schooling events were also present in the summer, but at lower numbers. With the exception of some schooling in mid-December, few to no schooling events were observed in the fall and winter months. Diel distributions for schooling fish during spring and fall months indicate schooling was concentrated during daylight hours and no schooling was observed at night. However, in December, schooling occurred at night, after midnight, and during daylight hours. Predator activity, most likely bull trout or rainbow trout according to a USACE biologist, was observed during late spring, when fish abundance index and schooling were highest for the year, and again in the fall months when fish events increased from a summer low. No predator activity was observed in the summer, and little activity occurred during the winter months.

Khan, Fenton; Johnson, Gary E.; Royer, Ida M.; Phillips, Nathan RJ; Hughes, James S.; Fischer, Eric S.; Ham, Kenneth D.; Ploskey, Gene R.

2012-04-01T23:59:59.000Z

352

Diode pumped solid state kilohertz disk laser system for time-resolved combustion diagnostics under microgravity at the drop tower Bremen  

SciTech Connect (OSTI)

We describe a specially designed diode pumped solid state laser system based on the disk laser architecture for combustion diagnostics under microgravity (?g) conditions at the drop tower in Bremen. The two-stage oscillator-amplifier-system provides an excellent beam profile (TEM{sub 00}) at narrowband operation (?? < 1 pm) and is tunable from 1018 nm to 1052 nm. The laser repetition rate of up to 4 kHz at pulse durations of 10 ns enables the tracking of processes on a millisecond time scale. Depending on the specific issue it is possible to convert the output radiation up to the fourth harmonic around 257 nm. The very compact laser system is integrated in a slightly modified drop capsule and withstands decelerations of up to 50 g (>11 ms). At first the concept of the two-stage disk laser is briefly explained, followed by a detailed description of the disk laser adaption to the drop tower requirements with special focus on the intended use under ?g conditions. In order to demonstrate the capabilities of the capsule laser as a tool for ?g combustion diagnostics, we finally present an investigation of the precursor-reactions before the droplet ignition using 2D imaging of the Laser Induced Fluorescence of formaldehyde.

Wagner, Volker; Paa, Wolfgang; Triebel, Wolfgang [Institute of Photonic Technology, Laser Diagnostics, Albert-Einstein-Str. 9, 07745 Jena (Germany)] [Institute of Photonic Technology, Laser Diagnostics, Albert-Einstein-Str. 9, 07745 Jena (Germany); Eigenbrod, Christian; Klinkov, Konstantin [Center of Applied Space Technology and Microgravity, University Bremen, Am Fallturm, 28359 Bremen (Germany)] [Center of Applied Space Technology and Microgravity, University Bremen, Am Fallturm, 28359 Bremen (Germany); Larionov, Mikhail; Giesen, Adolf; Stolzenburg, Christian [Institut fr Strahlwerkzeuge (IFSW), Pfaffenwaldring 43, 70569 Stuttgart (Germany)] [Institut fr Strahlwerkzeuge (IFSW), Pfaffenwaldring 43, 70569 Stuttgart (Germany)

2014-03-15T23:59:59.000Z

353

Surface modification of a \\{WTi\\} thin film on Si substrate by nanosecond laser pulses  

Science Journals Connector (OSTI)

Interaction of a nanosecond transversely excited atmospheric (TEA) CO2 laser, operating at 10.6?m, with tungstentitanium thin film (190nm) deposited on silicon of n-type (100) orientation, was studied. Multi-pulse irradiation was performed in air atmosphere with laser energy densities in the range 2449J/cm2. The energy absorbed from the laser beam was mainly converted to thermal energy, which generated a series of effects. The following morphological changes were observed: (i) partial ablation/exfoliation of the \\{WTi\\} thin film, (ii) partial modification of the silicon substrate with formation of polygonal grains, (iii) appearance of hydrodynamic features including nano-globules. Torch-like plumes started appearing in front of the target after several laser pulses.

S. Petrovi?; B. Gakovi?; D. Peruko; M. Trtica; B. Radak; P. Panjan; . Miljani?

2008-01-01T23:59:59.000Z

354

Effect of surface modification of bentonite nanoclay with polymers on its stability in an electrolyte solution  

Science Journals Connector (OSTI)

Recently surface modification of clay minerals has become increasingly important for improving the practical applications of clays and clay minerals. In this research work surface modifications of bentonite nanoclay

A. Khoshniyat; A. Hashemi; A. Sharif; J. Aalaie; C. Duobis

2012-02-01T23:59:59.000Z

355

Surface Modifications of Graphene-based Polymer Nanocomposites by Different Synthesis Techniques  

E-Print Network [OSTI]

Surface Modifications of Graphene-based Polymer Nanocomposites by Different Synthesis Techniques, polymerization #12;Surface Modifications of Graphene-based Polymer Nanocomposites by Different Synthesis, Turkey ABSTRACT With the appropriate surface treatments, graphene sheets can be separated from graphite

Yanikoglu, Berrin

356

A family of regulatory genes associated with type II restriction-modification systems.  

Science Journals Connector (OSTI)

...restriction-modification system. Nucleic Acids Res. 17...deoxyribonucleic acid restriction systems of their hosts. Microbiol...A. Lechevalier (ed.), Handbook of microbiology, vol. 2...restriction-modification systems, p. 39-71. In A. Razin...

T Tao; J C Bourne; R M Blumenthal

1991-02-01T23:59:59.000Z

357

Climate Change 2007: Mitigation of Climate Change.  

E-Print Network [OSTI]

2007: Mitigation of Climate Change. Full report. WorkingIntergovernmental Panel on Climate Change www.webcda.it LaIntergovernmental Panel on Climate Change. Il Rapporto

Schiavon, Stefano; Zecchin, Roberto

2007-01-01T23:59:59.000Z

358

0-7803-9387-2/05/$20.00 2005 IEEE Intrinsic Disorder and Protein Modifications  

E-Print Network [OSTI]

0-7803-9387-2/05/$20.00 ©2005 IEEE Intrinsic Disorder and Protein Modifications: Building an SVM disordered regions. However, iden- tifying precise locations of protein modifications involves expen- sive@indiana.edu; kedunker@iupui.edu Abstract-Post-translational protein modifications play an impor- tant role in many

Radivojac, Predrag

359

1. CONTRACT ID CODE PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

E-Print Network [OSTI]

3 1. CONTRACT ID CODE PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 2. MODIFICATION OF CONTRACT! ORDeR NO. DE-AC05-76RL01830 .. DUNS # 032987476 ~ 10B. DATED (SEE ITEM 13) CODE ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS, IT MODIFIES THE CONTRACT/ORDER NO. AS SET FORTH IN ITEM 14

360

1. CONTRACT ID CODE PAGE OF PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 28  

E-Print Network [OSTI]

1. CONTRACT ID CODE PAGE OF PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 28 2. MODIFICATION OF CONTRACT/ ORDER NO. DUNS # 032987476 s DE-AC05-76RL01830 10B. DATED (SEE ITEM 13} CODE FACILITY ONLY TO MODIFICATIONS OF COF^TTRACTS/ORDERS, IT MODIFIES THE CONTRACT/ORDER NO. AS SET FORTH IN ITEM 14

Note: This page contains sample records for the topic "tower modifications changing" 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

11. CONTRACT ID CODE IPAGE1 OFI AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 2  

E-Print Network [OSTI]

11. CONTRACT ID CODE IPAGE1 OFI PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 2 2 County, WA 99352 10A. MODIFICATION OF CONTRACT/ ORDER NO. DUNS# 032987476 DE-AC05-76RL01830 ~ 10B. DATED AND APPROPRIATION DATA (Ifrequired} CHECK ONE D D D 13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS

362

\\1. CONTRACT ID CODE OF PAGES-I PAGE AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

E-Print Network [OSTI]

\\1. CONTRACT ID CODE OF PAGES-I PAGE AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1 I 3 3. MODIFICATION OF CONTRACT/ ORDER NO. DE-AC05-76RLO1830 DUNS # 032987476 ~ 108. DATED (SEE /TEM 13) CODE FACILITY ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS, IT MODIFIES THE CONTRACT/ORDER NO. AS SET FORTH IN ITEM 14

363

Global Climate Change,Global Climate Change, Land Cover Change, andLand Cover Change, and  

E-Print Network [OSTI]

1 Global Climate Change,Global Climate Change, Land Cover Change, andLand Cover Change Changes · Due to ­ Climate Change ­ Land Cover / Land Use Change ­ Interaction of Climate and Land Cover Change · Resolution ­ Space ­ Time Hydro-Climatic Change · Variability vs. Change (Trends) · Point data

364

Traditional and Microwave-Assisted Solvothermal Synthesis and Surface Modification of Co7 Brucite Disk Clusters and Their Magnetic Properties  

Science Journals Connector (OSTI)

Traditional and Microwave-Assisted Solvothermal Synthesis and Surface Modification of Co7 Brucite Disk Clusters and Their Magnetic Properties ... Three CoII7 compounds with similar brucite disk core structures show markedly different solution stability and magnetic behaviors as a result of small changes in the inner bridges modifying the symmetry of the core and the magnitude of exchange constants. ... The structures contain Co7 brucite disk [Co7(?3-X)6(?2-O)6]2+, where the ligands are arranged in two open hemispheres and the flat inner surface is functionalized when X is OH?, CH3O?, and N3?. ...

Yan-Ling Zhou; Ming-Hua Zeng; Lian-Qiang Wei; Bin-Wen Li; Mohamedally Kurmoo

2010-06-24T23:59:59.000Z

365

Improved LWR Cladding Performance by EPD Surface Modification Technique  

SciTech Connect (OSTI)

This project will utilize the electro-phoretic deposition technique (EPD) in conjunction with nanofluids to deposit oxide coatings on prototypic zirconium alloy cladding surfaces. After demonstrating that this surface modification is reproducible and robust, the team will subject the modified surface to boiling and corrosion tests to characterize the improved nucleate boiling behavior and superior corrosion performance. The scope of work consists of the following three tasks: The first task will employ the EPD surface modification technique to coat the surface of a prototypic set of zirconium alloy cladding tube materials (e.g. Zircaloy and advanced alloys such as M5) with a micron-thick layer of zirconium oxide nanoparticles. The team will characterize the modified surface for uniformity using optical microscopy and scanning-electron microscopy, and for robustness using standard hardness measurements. After zirconium alloy cladding samples have been prepared and characterized using the EPD technique, the team will begin a set of boiling experiments to measure the heat transfer coefficient and critical heat flux (CHF) limit for each prepared sample and its control sample. This work will provide a relative comparison of the heat transfer performance for each alloy and the surface modification technique employed. As the boiling heat transfer experiments begin, the team will also begin corrosion tests for these zirconium alloy samples using a water corrosion test loop that can mimic light water reactor (LWR) operational environments. They will perform extended corrosion tests on the surface-modified zirconium alloy samples and control samples to examine the robustness of the modified surface, as well as the effect on surface oxidation

Michael Corradini; Kumar Sridharan

2012-11-26T23:59:59.000Z

366

RECIPIENT:Desert Research Institute STATE:NV PROJECT Tall Tower Wind Energy Monitoring and Numerical Model Validation in Southern Nevada; NREl Tracking  

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

Desert Research Institute STATE:NV Desert Research Institute STATE:NV PROJECT Tall Tower Wind Energy Monitoring and Numerical Model Validation in Southern Nevada; NREl Tracking TITLE: No. 11-012 Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number NREl-11-012 G010337 Based on my review of the information concerning the proposed action, as NEPA CompHance Officer (authorized under DOE Order 451.1A), I have made the following determination: CX, EA, EIS APPENDIX AND NUMBER: Description: A9 Information gathering (including, but not limited to, literature surveys, inventories, audits), data analYSis (including computer modeling), document preparation (such as conceptual deSign or feasibility studies, analytical energy supply and demand studies), and dissemination (including, but not limited to, document mailings, publication, and distribution;

367

Sensitivity study of explosive nucleosynthesis in type Ia supernovae: Modification of individual thermonuclear reaction rates  

Science Journals Connector (OSTI)

Background: Type Ia supernovae contribute significantly to the nucleosynthesis of many Fe-group and intermediate-mass elements. However, the robustness of nucleosynthesis obtained via models of this class of explosions has not been studied in depth until now.Purpose: We explore the sensitivity of the nucleosynthesis resulting from thermonuclear explosions of massive white dwarfs with respect to uncertainties in nuclear reaction rates. We put particular emphasis on indentifying the individual reactions rates that most strongly affect the isotopic products of these supernovae.Method: We have adopted a standard one-dimensional delayed detonation model of the explosion of a Chandrasekhar-mass white dwarf and have postprocessed the thermodynamic trajectories of every mass shell with a nucleosynthetic code to obtain the chemical composition of the ejected matter. We have considered increases (decreases) by a factor of 10 on the rates of 1196 nuclear reactions (simultaneously with their inverse reactions), repeating the nucleosynthesis calculations after modification of each reaction rate pair. We have computed as well hydrodynamic models for different rates of the fusion reactions of 12C and of 16O. From the calculations we have selected the reactions that have the largest impact on the supernova yields, and we have computed again the nucleosynthesis using two or three alternative prescriptions for their rates, taken from the JINA REACLIB database. For the three reactions with the largest sensitivity we have analyzed as well the temperature ranges where a modification of their rates has the strongest effect on nucleosynthesis.Results: The nucleosynthesis resulting from the type Ia supernova models is quite robust with respect to variations of nuclear reaction rates, with the exception of the reaction of fusion of two 12C nuclei. The energy of the explosion changes by less than ?4% when the rates of the reactions 12C+12C or 16O+16O are multiplied by a factor of 10 or 0.1. The changes in the nucleosynthesis owing to the modification of the rates of these fusion reactions are also quite modest; for instance, no species with a mass fraction larger than 0.02 experiences a variation of its yield larger than a factor of 2. We provide the sensitivity of the yields of the most abundant species with respect to the rates of the most intense reactions with protons, neutrons, and ?. In general, the yields of Fe-group nuclei are more robust than the yields of intermediate-mass elements. Among the species with yields larger than 10?8M?, 35S has the largest sensitivity to the nuclear reaction rates. It is remarkable that the reactions involving elements with Z>22 have a tiny influence on the supernova nucleosynthesis. Among the charged-particle reactions, the most influential on supernova nucleosynthesis are 30Si+p?31P+?, 20Ne+??24Mg+?, and 24Mg+??27Al+p. The temperatures at which a modification of their rate has a larger impact are in the range 2?T?4 GK.Conclusions: The explosion model (i.e., the assumed conditions and propagation of the flame) chiefly determines the element production of type Ia supernovae and derived quantities such as their luminosity, while the nuclear reaction rates used in the simulations have a small influence on the kinetic energy and final chemical composition of the ejecta. Our results show that the uncertainty in individual thermonuclear reaction rates cannot account for discrepancies of a factor of 2 between isotopic ratios in type Ia supernovae and those in the solar system, especially within the Fe group.

Eduardo Bravo and Gabriel Martnez-Pinedo

2012-05-18T23:59:59.000Z

368

Categorical Exclusion Determinations: B1.19 | Department of Energy  

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

19 19 Categorical Exclusion Determinations: B1.19 Existing Regulations B1.19: Microwave, meteorological, and radio towers Siting, construction, modification, operation, and removal of microwave, radio communication, and meteorological towers and associated facilities, provided that the towers and associated facilities would not be in a governmentally designated scenic area (see B(4)(iv) of this appendix) unless otherwise authorized by the appropriate governmental entity. Previous Regulations Categorical Exclusion Determinations dated before November 14th, 2011 were issued under previous DOE NEPA regulations. See the Notice of Final Rulemaking (76 FR 63763, 10/13/2011) for information changes to this categorical exclusion. DOCUMENTS AVAILABLE FOR DOWNLOAD February 15, 2011

369

Categorical Exclusion Determinations: B1.19 | Department of Energy  

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

19 19 Categorical Exclusion Determinations: B1.19 Existing Regulations B1.19: Microwave, meteorological, and radio towers Siting, construction, modification, operation, and removal of microwave, radio communication, and meteorological towers and associated facilities, provided that the towers and associated facilities would not be in a governmentally designated scenic area (see B(4)(iv) of this appendix) unless otherwise authorized by the appropriate governmental entity. Previous Regulations Categorical Exclusion Determinations dated before November 14th, 2011 were issued under previous DOE NEPA regulations. See the Notice of Final Rulemaking (76 FR 63763, 10/13/2011) for information changes to this categorical exclusion. DOCUMENTS AVAILABLE FOR DOWNLOAD July 3, 2013

370

Polyamide desalination membrane characterization and surface modification to enhance fouling resistance.  

SciTech Connect (OSTI)

The market for polyamide desalination membranes is expected to continue to grow during the coming decades. Purification of alternative water sources will also be necessary to meet growing water demands. Purification of produced water, a byproduct of oil and gas production, is of interest due to its dual potential to provide water for beneficial use as well as to reduce wastewater disposal costs. However, current polyamide membranes are prone to fouling, which decreases water flux and shortens membrane lifetime. This research explored surface modification using poly(ethylene glycol) diglycidyl ether (PEGDE) to improve the fouling resistance of commercial polyamide membranes. Characterization of commercial polyamide membrane performance was a necessary first step before undertaking surface modification studies. Membrane performance was found to be sensitive to crossflow testing conditions. Concentration polarization and feed pH strongly influenced NaCl rejection, and the use of continuous feed filtration led to higher water flux and lower NaCl rejection than was observed for similar tests performed using unfiltered feed. Two commercial polyamide membranes, including one reverse osmosis and one nanofiltration membrane, were modified by grafting PEGDE to their surfaces. Two different PEG molecular weights (200 and 1000) and treatment concentrations (1% (w/w) and 15% (w/w)) were studied. Water flux decreased and NaCl rejection increased with PEGDE graft density ({micro}g/cm{sup 2}), although the largest changes were observed for low PEGDE graft densities. Surface properties including hydrophilicity, roughness and charge were minimally affected by surface modification. The fouling resistance of modified and unmodified membranes was compared in crossflow filtration studies using model foulant solutions consisting of either a charged surfactant or an oil in water emulsion containing n-decane and a charged surfactant. Several PEGDE-modified membranes demonstrated improved fouling resistance compared to unmodified membranes of similar initial water flux, possibly due to steric hindrance imparted by the PEG chains. Fouling resistance was higher for membranes modified with higher molecular weight PEG. Fouling was more extensive for feeds containing the cationic surfactant, potentially due to electrostatic attraction with the negatively charged membranes. However, fouling was also observed in the presence of the anionic surfactant, indicating hydrodynamic forces are also responsible for fouling.

Sharma, Mukul M. (Univeristy of Texas at Austin, Austin, TX); Freeman, Benny D. (Univeristy of Texas at Austin, Austin, TX); Van Wagner, Elizabeth M. (Univeristy of Texas at Austin, Austin, TX); Hickner, Michael A. (Pennsylvania State University, University Park, PA); Altman, Susan Jeanne

2010-08-01T23:59:59.000Z

371

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT I~' CONTRACT  

National Nuclear Security Administration (NNSA)

I~' I~' CONTRACT ID CODE IPAGE OF PAGES DE-NR0000031 . 1 I 1 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. I 5. PROJECT NO. (If applicable) 003 Same as Block 16G . N~ 6. ISSUED BV CODE 7. ADMINISTERED BV (If other than Item 6) Code I U.S. Department of Energy Pittsburgh Naval Reactors Office P.O. Box 109 West Mifflin, PA 15122-0109 8. NAME AND ADDRESS OF CONTRACTOR (No. street, county, State and ZIP Code) (*...) 9.A. AMENDMENT OF SOLICITATION NO. Bechtel Marine Propulsion Corporation 9.6. DATED (SEE ITEM 11) 50 Beale Street San Francisco, CA 94105-1895 lOA MODIFICATION OF Contract/Order NO. *... DE-NROOOOO31 10.B. DATED (SEE ITEM 13) CODE N/A I FACILlTV CODE N/A Seotember 18, 2008 11. THIS ITEM ONLV APPLIES TO AMENDMENTS OF SOLICITATIONS D The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers Dis

372

L AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

National Nuclear Security Administration (NNSA)

L L _ AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 25 7 See Block 16C 6 . 1SSUED BY CODE 0500 8 NNSA/ Oa kridge Site Office u.s. De pa rtment of Energ y NNSA/ Y-12 S it e Offic e P. O. Box 2 05 0 Bu ilding 97 0 4- 2 Oak Ridge TN 37831 8 . NAME AND ADDRESS OF CONTRACTOR (No., street, county. state and ZIP Code) ABCOCK & WILCOX TECHNICAL B A t t n: W ILLIE J. W I LSON PO BOX 2009 SERVICES Y- 12 , LLC ,1 . CONTRACT ID CODE I PAGE OF PAGES 1 I 1 4. REQUISITION/PURCHASE REO. NO. 15. PROJECT NO. (If applicable) 7. ADMINISTERED BY (If other than Item 6) coDE lo5008 NNSA/ Oakridg e Site Office u. s . Department o f Energ y NNSA/ Y-12 Site Of fi ce P. O. Bo x 2050 Building 9704 -2 Oak Ridge TN 37831 (x) 9A AMENDMENT OF SOLICITATION NO.

373

REQUEST FOR CHANGE OF RECORD Name Change  

E-Print Network [OSTI]

(ex. from variation to legal name) or Add Middle Name/Initial ­ Copy of birth certificate, or valid U. Documentation Required for Date of Birth Changes: Copy of birth certificate, or valid U.S. passportREQUEST FOR CHANGE OF RECORD Name Change Social Security Number Change Date of Birth Change

374

10 CFR 830 Major Modification Determination for Replacement of ATR Primary Coolant Pumps and Motors  

SciTech Connect (OSTI)

The continued safe and reliable operation of the ATR is critical to the Department of Energy (DOE) Office of Nuclear Energy (NE) mission. While ATR is safely fulfilling current mission requirements, a variety of aging and obsolescence issues challenge ATR engineering and maintenance personnels capability to sustain ATR over the long term. First documented in a series of independent assessments, beginning with an OA Environmental Safety and Health Assessment conducted in 2003, the issues were validated in a detailed Material Condition Assessment (MCA) conducted as a part of the ATR Life Extension Program in 2007.Accordingly, near term replacement of aging and obsolescent original ATR equipment has become important to ensure ATR capability in support of NEs long term national missions. To that end, a mission needs statement has been prepared for a non-major system acquisition which is comprised of three interdependent subprojects. The first project will replace the existent diesel-electrical bus (E-3), switchgear, and the 50-year-old obsolescent marine diesels with commercial power that is backed with safety related emergency diesel generators, switchgear, and uninterruptible power supply (UPS). The second project, the subject of this major modification determination, will replace the four, obsolete, original primary coolant pumps (PCPs) and motors. Completion of this and the two other age-related projects (replacement of the ATR diesel bus [E-3] and switchgear and replacement of the existent emergency firewater injection system) will resolve major age-related operational issues plus make a significant contribution in sustaining the ATR safety and reliability profile. The major modification criteria evaluation of the project pre-conceptual design identified several issues that lead to the conclusion that the project is a major modification: 1. Evaluation Criteria #3 (Change of existing process). The proposed strategy for equipping the replacement PCPs with VFDs and having the PCPs also function as ECPs will require significant safety basis changes requiring DOE approval. 2. Evaluation Criteria #4 (Use of new technology). The use of VFD and VFD pump catcher technology for the PCPs is not currently in use and has not been previously formally reviewed/approved by DOE for ATR. It is noted that VFD technology has several decades of commercial use and experience. However, the ATR probabilistic risk assessment will have to be updated, reflecting the changes for supplying ECP flows including VFD reliability, to confirm that the proposed activity maintains or reduces the CDF for the ATR. 3. Evaluation Criteria #5 (Create the need for new or revised safety SSCs). It is expected that the proposed activity will result in a revised list of safety-related SSCs. Specifically, as currently proposed, the existing ECPs will be deleted from the list. The PCPs and their associated components, picking up the ECP function, will be classified as safety-related active Seismic Category I.

Noel Duckwitz

2011-05-01T23:59:59.000Z

375

Modification of Deeply Buried Hydrophobic Interfaces by Ionic Surfactants  

SciTech Connect (OSTI)

Hydrophobicity, the spontaneous segregation of oil and water, can be modified by surfactants. The way this modification occurs is studied at the oil-water interface for a range of alkanes and two ionic surfactants. A liquid interfacial monolayer, consisting of a mixture of alkane molecules and surfactant tails, is found. Upon cooling, it freezes at T{sub s}, well above the alkane's bulk freezing temperature, T{sub b}. The monolayer's phase diagram, derived by surface tensiometry, is accounted for by a mixtures-based theory. The monolayer's structure is measured by high-energy X-ray reflectivity above and below T{sub s}. A solid-solid transition in the frozen monolayer, occurring approximately 3 C below T{sub s}, is discovered and tentatively suggested to be a rotator-to-crystal transition.

Ocko, B.M.; Tamam, L.; Pontoni, D.; Sapir, Z.; Yefet, S.; Sloutskin, E.; Reichert, H.; Deutsch, M.

2011-04-05T23:59:59.000Z

376

Modification of Deeply Buried Hydrophobic Interfaces by Ionic Surfactants  

SciTech Connect (OSTI)

Hydrophobicity, the spontaneous segregation of oil and water, can be modified by surfactants. The way this modification occurs is studied at the oil-water interface for a range of alkanes and two ionic surfactants. A liquid interfacial monolayer, consisting of a mixture of alkane molecules and surfactant tails, is found. Upon cooling, it freezes at T{sub s}, well above the alkane's bulk freezing temperature, T{sub b}. The monolayer's phase diagram, derived by surface tensiometry, is accounted for by a mixtures-based theory. The monolayer's structure is measured by high-energy X-ray reflectivity above and below T{sub s}. A solid-solid transition in the frozen monolayer, occurring approximately 3 C below T{sub s}, is discovered and tentatively suggested to be a rotator-to-crystal transition.

L Tamam; D Pontoni Z Sapir; S Yefet; S Sloutskin; B Ocko; H Reichert; M Deutsch

2011-12-31T23:59:59.000Z

377

Contract DE-AC05-76RL01830 Modification M947  

E-Print Network [OSTI]

Contract DE-AC05-76RL01830 Modification M947 J-F-i Part III ­ List of Documents, Exhibits;Contract DE-AC05-76RL01830 Modification M947 J-F-1 OPERATIONAL AGREEMENT BETWEEN THE OFFICE OF SCIENCE;Contract DE-AC05-76RL01830 Modification M947 J-F-2 OPERATIONAL AGREEMENT BETWEEN THE OFFICE OF SCIENCE

378

Nuclear Medium Modifications of Hadrons from Generalized Parton Distributions  

E-Print Network [OSTI]

We study the structure of generalized parton distributions in spin 0 nuclei within a microscopic approach for nuclear dynamics. GPDs can be used on one side as tools to unravel the deep inelastic transverse structure of nuclei in terms of both transverse spatial and transverse momentum degrees of freedom. On the other, one can obtain information on GPDs themselves by observing how they become modified in the nuclear environment. We derive the structure of the nuclear deeply virtual Compton scattering tensor and generalized parton distributions at leading order in $Q$ in a field-theoretical framework. The nuclear generalized parton distributions are calculated using a two step process -- the convolution approach -- where the scattering process happens from a quark inside a nucleon, itself inside a nucleus, disregarding final state interactions with both the nuclear and nucleon debris. We point out that details of the nuclear long range interactions such as two-body currents, can be disregarded compared to the deep inelastic induced modifications of the bound GPDs. We show how the pattern of nuclear modifications predicted, and in particular the deviations of off-shell effects from the longitudinal convolution provide clear signals to be sought in experimental measurements. Finally, we find interesting relationships by studying Mellin moments in nuclei: in particular we predict the $A$-dependence for the $D$-term of GPDs within a microscopic approach, and the behavior with $t$ of the total momentum carried by quarks in a nucleus. The latter provides an important element for the evaluation of nuclear hadronization phenomena which are vital for interpreting current and future data at RHIC, HERMES and Jefferson Lab.

S. Liuti; S. K. Taneja

2005-04-04T23:59:59.000Z

379

Structural modifications of low-energy heavy-ion irradiated germanium  

SciTech Connect (OSTI)

Heavy-ion irradiation of crystalline germanium (c-Ge) results in the formation of a homogeneous amorphous germanium (a-Ge) layer at the surface. This a-Ge layer undergoes structural modification such as a strong volume expansion accompanied by drastic surface blackening with further ion irradiation. In the present paper we investigate the mechanism of this ion-induced structural modification in a-Ge basically for the irradiation with I ions (3 and 9 MeV) at room and low temperature as a function of ion fluence for the ion incidence angles of {Theta}=7 deg. and {Theta}=45 deg. For comparison, Ag- and Au-ion irradiations were performed at room temperature as a function of the ion fluence. At fluences two orders of magnitude above the amorphization threshold, morphological changes were observed for all irradiation conditions used. Over a wide range of ion fluences we demonstrate that the volume expansion is caused by the formation of voids at the surface and in the depth of the projected ion range. At high ion fluences the amorphous layer transforms into a porous structure as established by cross section and plan view electron microscopy investigations. However, the formation depth of the surface and buried voids as well as the shape and the dimension of the final porous structure depend on the ion fluence, ion species, and irradiation temperature and will be discussed in detail. The rate of the volume expansion (i.e., porous layer formation) depends linearly on the value of {epsilon}{sub n}. This clearly demonstrates that the structural changes are determined solely by the nuclear energy deposited within the amorphous phase. In addition, at high ion fluences all perpendicular ion irradiations lead to a formation of a microstructure at the surface, whereas for nonperpendicular ion irradiations a nonsaturating irreversible plastic deformation (ion hammering) without a microstructure formation is observed. For the irradiation with ion energies of several MeV, the effect of plastic deformation shows a linear dependence on the ion fluence. Based on these results, we provide an explanation for the differences in surface morphology observed for different angles of incidence of the ion beam will be discussed in detail.

Steinbach, T.; Wernecke, J.; Wesch, W. [Institut fuer Festkoerperphysik, Friedrich-Schiller-Universitaet Jena, Max-Wien-Platz 1, D-07743 Jena (Germany); Kluth, P.; Ridgway, M. C. [Australian National University, Research School of Physics and Engineering, Canberra (Australia)

2011-09-01T23:59:59.000Z

380

Seismic bridge response modification due to degradation of viscous dampers performance  

E-Print Network [OSTI]

Monitoring of Isolated Bridges: Parametric Analysis of theidentification procedure for bridge structures with energyUCSD. Cendron. (2008). Bridge response modification due to

Graziotti, Francesco

2010-01-01T23:59:59.000Z

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381

A review of the secondary plant modifications on steam generator performance  

SciTech Connect (OSTI)

This paper provides recommendations for modifications in the secondary system of existing pressurized water reactor (PWR) plants for the purpose of arresting the problem of steam generator corrosion.

Asarpota, A.; Snaith, R.

1983-01-01T23:59:59.000Z

382

Evaluation of the Cask Transportation Facility Modifications (CTFM) compliance to DOE order 6430.1A  

SciTech Connect (OSTI)

This report was prepared to evaluate the compliance of Cask Transportation Facility Modifications (CTFM) to DOE Order 6430.1A.

ARD, K.E.

1999-07-14T23:59:59.000Z

383

Review: Global Climate Change  

E-Print Network [OSTI]

introduction to global climate change, the greenhouseReview: Global Climate Change: A Primer By Orrin H PilkeyPilkey, Keith C. Global Climate Change: a primer. Durham,

Smith, Jennifer

2013-01-01T23:59:59.000Z

384

Infrastructure Institutional Change Principle  

Broader source: Energy.gov [DOE]

Research shows that changes in infrastructure prompt changes in behavior (for better or worse). Federal agencies can modify their infrastructure to promote sustainability-oriented behavior change,...

385

Lab announces security changes  

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

Lab announces security changes Lab announces security changes The Laboratory is implementing several changes to its security procedures as the result of a recent security...

386

Surveillance Guide - CMS 3.3 CMS 3.4 Temporary Changes  

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

TEMPORARY CHANGES TEMPORARY CHANGES 1.0 Objective The objective of this surveillance is to evaluate the effectiveness of the contractor's program for controlling temporary changes to the facility. Such changes include temporary modifications, temporary procedure changes, and tests or experiments. The Facility Representative reviews the status of temporary modifications, distribution of temporary procedure changes, and examines tests or experiments. 2.0 References 2.1 DOE 5700.6C, Quality Assurance 2.2 DOE-STD-1073-93, Guide for Operational Configuration Management 3.0 Requirements Implemented This surveillance is conducted to implement requirements CM-0009 and CM-0011 from the RL S/RID. These requirements are derived from

387

Climate Change and Extinctions  

E-Print Network [OSTI]

Lectures presents: Climate Change and Extinctions Happening2013. He will present a climate change extinction model that

Sinervo, Barry

2013-01-01T23:59:59.000Z

388

change_address_111609  

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

CHANGE OF ADDRESS and EMERGENCY NOTIFICATION CHANGE OF ADDRESS and EMERGENCY NOTIFICATION TO: HUMAN RESOURCES DATE: Z# Social Security # Print First Name Print Middle Name or Initial Print Last Name (Currently in Payroll System) Complete appropriate changes: NAME CHANGE: Print Name Change to ADDRESS CHANGE: Mailing Address City State Zip

389

Climate Change Scoping Plan  

E-Print Network [OSTI]

Climate Change Scoping Plan a amework for change as approved Prepared by the California AirBackgroundBackgroundBackground ............................................................................................................................................................................................................................................................................................................................................................................................................ 4444 1. Climate Change Policy in California1. Climate Change Policy in California1. Climate Change Policy in California1. Climate Change Policy in California

390

Climate Change Scoping Plan  

E-Print Network [OSTI]

Climate Change Scoping Plan a amework for change Prepared by the California Air Resources BoardBackgroundBackgroundBackground ............................................................................................................................................................................................................................................................................................................................................................................................................ 4444 1. Climate Change Policy in California1. Climate Change Policy in California1. Climate Change Policy in California1. Climate Change Policy in California

391

Change Notice for DOE-STD-3013-2000  

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

18-891 18-891 EFG 107-9OJ United States Government Department of Energy memorandum aEPLY To ATTN OF: EM-21 (T. Kiess, (301) 903-1446; G. Roberson, (505) 845-5805) SUBJECT: Change Notice for Authorization of a Procedural Allowance to Rocky Flats Environmental Technology Site To: Richard Serbu, Office of Nuclear Safety Policy and Standards, EH-3 1 This memorandum provides a "Change Notice," required by the Department of Energy (DOE) Technical Standards Program Procedures document, "Maintenance of DOE Technical Standards" (DOE-TSPP-9, Rev. 5). The addendum to this memorandum describes a procedural allowance to the Rocky Flats Environmental Technology Site. This allowance is a lmm modification to the 126mm diameter specification in Section 6.2.2, item 3, of DOE-STD-3013. This Inn-n modification

392

Surface modification of several dental substrates by non-thermal, atmospheric plasma brush  

Science Journals Connector (OSTI)

AbstractObjective The purpose of this study was to reveal the effectiveness of non-thermal atmospheric plasma brush in surface wettability and modification of four dental substrates. Methods Specimens of dental substrates including dentin, enamel, and two composites Filtek Z250, Filtek LS Silorane were prepared (?2mm thick, ?10mm diameter). The prepared surfaces were treated for 545s with a non-thermal atmospheric plasma brush working at temperatures from 36 to 38C. The plasma-treatment effects on these surfaces were studied with contact-angle measurement, X-ray photoemission spectroscopy (XPS) and scanning electron microscopy (SEM). Results The non-thermal atmospheric argon plasma brush was very efficient in improving the surface hydrophilicity of four substrates studied. The results indicated that water contact angle values decreased considerably after only 5s plasma treatment of all these substrates. After 30s treatment, the values were further reduced to plasma treatment. SEM surface images indicated that no significant morphology change was induced on these dental substrates after exposure to plasmas. Significance Without affecting the bulk properties, a super-hydrophilic surface could be easily achieved by the plasma brush treatment regardless of original hydrophilicity/hydrophobicity of dental substrates tested.

Mingsheng Chen; Ying Zhang; M. Sky Driver; Anthony N. Caruso; Qingsong Yu; Yong Wang

2013-01-01T23:59:59.000Z

393

Modification of Central Solenoid Model Coil Test Facility for Rapid Testing of CICC  

SciTech Connect (OSTI)

This document describes preliminary design modifications to the CSMC Test Facility in JAEA, Naka, Japan that will allow rapid test and change-out of CS conductor samples while simultaneously achieving more precise and reliable characterization of those samples than is presently achievable elsewhere. The current philosophy for CS conductor testing is to test an Insert in CSMC followed by SULTAN testing. The SULTAN facility has very short length in field and a short length between the High Field Zone and the joints. This makes it difficult to obtain uniform distribution of current in the cable at low voltage levels, which defines the current sharing temperature. In a real magnet, like ITER CS, there is a long length of conductor in the highest field. Such conditions provide a more uniform current distribution near current sharing. The modified facility will serve as an economical tool for ITER conductor testing. The test item will be a three turn sample, approximately 15 m long, placed in the background field of the CSMC. This new mode of operation will reduce the time of cool-down, warm-up and installation of the sample into the CSMC facility, which should significantly reduce the cost of a test per sample.

Hatfield, Daniel R [ORNL] [ORNL; Miller, John L [ORNL] [ORNL; Martovetsky, Nicolai N [ORNL] [ORNL; Kenney, Steven J [ORNL] [ORNL

2010-01-01T23:59:59.000Z

394

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE  

E-Print Network [OSTI]

/MODIFICATION," continued. A. Office of Science Nuclear Physics: The purpose of this contract modification is to deobligate funds under the American Recovery and Reinvestment Act of 2009 for the Office of Science Nuclear Physics.S. Department of Energy Pacific Northwest Site Office Post Office Box 350 Richland, WA 99352 8. NAME AND ADDRESS

395

11. CONTRACT 10 CODE OF PAGESIPAGE AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

E-Print Network [OSTI]

11. CONTRACT 10 CODE OF PAGESIPAGE AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1 1 7 2 ONLY 10 MODIFICATIONS OF CONTRACTS/ORDERS, IT MODIFIES THE CONTRACT/ORDER NO. AS SET FORTH IN ITEM 14 14 ARE MADE IN THE CONTRACT ORDER NO. IN ITEM 10A D B. THE ABOVE NUMBERED CONTRACTIORDER IS MODIFIED

396

\\1. CONTRACT ID CODE I PAGE OF PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

E-Print Network [OSTI]

\\1. CONTRACT ID CODE I PAGE OF PAGES AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1 1 1 2 ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS, IT MODIFIES THE CONTRACT/ORDER NO. AS SET FORTH IN ITEM 14 IN ITEM 14 ARE MADE IN THE CONTRACT ORDER NO. IN ITEM 10A. D B. THE ABOVE NUMBERED CONTRACTIORDER

397

11. CONTRACT 10 CODE OF PAGESIPAGE AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT  

E-Print Network [OSTI]

11. CONTRACT 10 CODE OF PAGESIPAGE AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1 1 2 2 ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS, IT MODIFIES THE CONTRACT/ORDER NO. AS SET FORTH IN ITEM 14 14 ARE MADE IN THE CONTRACT ORDER NO. IN ITEM 10A. D B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED

398

Contract No. DE-AC05-76RL01830 Modification M943  

E-Print Network [OSTI]

Contract No. DE-AC05-76RL01830 Modification M943 SECTION J APPENDIX A ADVANCE UNDERSTANDINGS ON HUMAN RESOURCES COST Applicable to the Operation of PACIFIC NORTHWEST NATIONAL LABORATORY Contract No. DE-AC05-76RL01830 #12;Contract No. DE-AC05-76RL01830 Modification M943 J-A-1 Table of Contents

399

Contract Number: DE-AC05-76RL01830 Modification M957  

E-Print Network [OSTI]

Contract Number: DE-AC05-76RL01830 Modification M957 APPENDIX E STANDARDS OF PERFORMANCE-BASED FEE OF THE PACIFIC NORTHWEST NATIONAL LABORATORY #12;Contract Number: DE-AC05-76RL01830 Modification M957 APPENDIX E FOR MANAGEMENT AND OPERATIONS OF THE PACIFIC NORTHWEST NATIONAL LABORATORY #12;Contract Number: DE-AC05-76RL01830

400

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT I I CONTRACT...  

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

RCN No. ORAU-14 Page 6 of 14 Pages DOE directives may be found at the following Internet address: http:www.directives.doe.gov THROUGH NOTES AND DATE TITLE CHANGE...

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401

SUMMARY OF NON-MATERIAL MODIFICATIONS APPROVED BY PRESIDENT  

E-Print Network [OSTI]

HANDBOOK Subject Description Relevant Handbook Sections Non-Material Changes faculty", "teaching faculty" as used elsewhere in the Handbook � Substitute for "instructional faculty", "teaching faculty" as used elsewhere in Handbook � Revise

402

This task/contract modification is for applying funding from the American Recovery Reinvestment Act  

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

MODEL CONTRACT MODIFICATION MODEL CONTRACT MODIFICATION AMERICAN RECOVERY AND REINVESTMENT ACT Developed by the Office of Environmental Management Purpose of Model The purpose of this model is to expedite the contracting process by helping assure a consistent application of the contract terms for the various modifications to EM contracts for incorporation of the Recovery Act work and associated requirements. This applies to work within the general scope existing contracts where Recovery Act funds are to be used. It is recognized that the work scope and other terms of individual contracts will affect the actual language that is used in each modification. However, this model sets forth principles that are necessary for all modifications for EM FAR-based (non-M&O) contracts as well as M&O

403

DOE Awards Task Order Modification for Support Services to Office of  

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

Modification for Support Services to Office Modification for Support Services to Office of Environmental Management DOE Awards Task Order Modification for Support Services to Office of Environmental Management March 11, 2013 - 12:00pm Addthis Media Contact Lynette Chafin, 513-246-0461 Lynette.Chafin@emcbc.doe.gov Cincinnati - The Department of Energy (DOE) today awarded a modification to Task Order DE-DT0005235 to J.G. Management Systems, Inc. of Grand Junction, CO for administrative and program analytical support for the Office of Environmental Management. The task order was awarded under Indefinite Delivery/Indefinite Quantity (ID/IQ) Master Contract. The modification is valued at approximately $3.1M over three years including a one-year base period and two one-year option periods. J.G. Management Systems, Inc. is a small-disadvantaged business

404

Medium Modifications of Hadron Properties and Partonic Processes  

E-Print Network [OSTI]

Chiral symmetry is one of the most fundamental symmetries in QCD. It is closely connected to hadron properties in the nuclear medium via the reduction of the quark condensate , manifesting the partial restoration of chiral symmetry. To better understand this important issue, a number of Jefferson Lab experiments over the past decade have focused on understanding properties of mesons and nucleons in the nuclear medium, often benefiting from the high polarization and luminosity of the CEBAF accelerator. In particular, a novel, accurate, polarization transfer measurement technique revealed for the first time a strong indication that the bound proton electromagnetic form factors in 4He may be modified compared to those in the vacuum. Second, the photoproduction of vector mesons on various nuclei has been measured via their decay to e+e- to study possible in-medium effects on the properties of the rho meson. In this experiment, no significant mass shift and some broadening consistent with expected collisional broadening for the rho meson has been observed, providing tight constraints on model calculations. Finally, processes involving in-medium parton propagation have been studied. The medium modifications of the quark fragmentation functions have been extracted with much higher statistical accuracy than previously possible.

W. K. Brooks; S. Strauch; K. Tsushima

2011-04-11T23:59:59.000Z

405

Changing Faces, Changing Government | Department of Energy  

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

Changing Faces, Changing Government Changing Faces, Changing Government Changing Faces, Changing Government May 24, 2012 - 3:24pm Addthis Changing Faces, Changing Government What are the key facts? The Energy Department incorporated metrics into funding programs to track minority participation; conducted robust outreach to business associations, utilizing a corporate enterprise system to capture and track small business awards to AAPI-owned businesses; incorporated AAPI businesses into its Small Business Advisory Group; and leveraged its Office of Small and Disadvantaged Business Utilization to target areas of high Asian American populations where there are DOE offices and facilities. Editor's Note: This blog was originally posted by the White House Initiative on Asian Americans and Pacific Islanders, by their Deputy

406

Numerical analysis of the influence of inclination angle and wind on the heat losses of cavity receivers for solar thermal power towers  

Science Journals Connector (OSTI)

Abstract The convective heat losses of cavity receivers for solar thermal power towers are of great importance for the overall efficiency of the whole system. However, the influence of wind on these losses has not been studied sufficiently for large scale cavity receivers with different inclination angles. In this present study the impact of head-on and side-on wind on large cavity receivers with inclination angles in the range of 0 (horizontal cavity) to 90 (vertical cavity) is analyzed numerically. The simulation results are compared to data published in literature. When no wind is present the losses decrease considerably with increasing inclination angle of the receiver. In case of a horizontal receiver wind does not have a huge impact on the losses: they remain constant on a high level. In case of an inclined cavity wind increases the heat losses significantly in most of the cases, although the highest absolute value of the losses occurs for the horizontal receiver exposed to head on wind. In some cases, when wind is flowing parallel to the aperture plane, a reduction of the heat losses is observed. The temperature distribution in the cavity is analyzed in order to explain the impact of wind on the heat losses. Wind in general causes a shrinking of the zone with uniform high temperature in the upper region of the cavity, whereas wind flowing parallel to the aperture plane additionally inhibits hot air from leaving the cavity and therefore leads to an increased temperature in the lower zone.

Robert Flesch; Hannes Stadler; Ralf Uhlig; Robert Pitz-Paal

2014-01-01T23:59:59.000Z

407

Limits on spin-independent wimp-nucleon interactions from the two-tower run of the cryogenic dark matter search  

SciTech Connect (OSTI)

We report new results from the Cryogenic Dark Matter Search (CDMS II) at the Soudan Underground Laboratory. Two towers, each consisting of six detectors, were operated for 74.5 live days, giving spectrum-weighted exposures of 34 kg-d for germanium and 12 kg-d for silicon targets after cuts, averaged over recoil energies 10-100 keV for a WIMP mass of 60GeV/c{sup 2}. A blind analysis was conducted, incorporating improved techniques for rejecting surface events. No WIMP signal exceeding expected backgrounds was observed. When combined with our previous results from Soudan, the 90% C.L. upper limit on the spin-independent WIMP-nucleon cross section is 1.6 x 10{sup -43} cm{sup 2} from Ge, and 3 x 10{sup -42} cm{sup 2} from Si, for a WIMP mass of 60GeV/c{sup 2}. The combined limit from Ge (Si) is a factor of 2.5 (10) lower than our previous results, and constrains predictions of supersymmetric models.

Akerib, D.S.; Attisha, M.J.; Bailey, C.N.; Baudis, L.; Bauer, Daniel A.; Brink, P.L.; Brusov, P.P.; Bunker, R.; Cabrera, B.; Caldwell, D.O.; Chang, C.L.; Cooley, J.; Crisler, M.B.; Cushman, P.; Daal, M.; Dixon, R.; Dragowsky, M.R.; Driscoll, D.D.; Duong, L.; Ferril, R.; Filippini, J.; /Brown U. /Case Western Reserve U. /Fermilab /LBL, Berkeley

2005-09-01T23:59:59.000Z

408

Experimental investigation of the dynamic installation of a slip joint connection between the monopile and tower of an offshore wind turbine  

Science Journals Connector (OSTI)

The failure of the traditional grouted connections of offshore wind turbines has led to the investigation of alternatives that provide a connection between the foundation pile and the turbine tower. An alternative to the traditional joint is a steel-to-steel connection also called a slip joint. To ensure a proper fit of the slip joint a dynamic installation of the joint is proposed. In this contribution, the effectiveness of harmonic excitation as an installation procedure is experimentally investigated using a 1:10 scaled model of the joint. During the dynamic installation test the applied static load, settlements and dynamic response of the joint are monitored using respectively load cells, taut wires and strain gauges placed both inside and outside the conical surfaces. The results show that settlement occurs only when applying a harmonic load at specific forcing frequencies. The settlement stabilizes to a certain level for each of the specific frequencies, indicating that a controlled way of installation is possible. The results show that it is essential to vibrate at specific frequencies and that a larger amplitude of the harmonic force does not automatically lead to additional settlement.

M L A Segeren; K W Hermans

2014-01-01T23:59:59.000Z

409

Dark matter vs. modifications of the gravitational inverse-square law. Results from planetary motion in the solar system  

E-Print Network [OSTI]

Dark matter or modifications of the Newtonian inverse-square law in the solar-system are studied with accurate planetary astrometric data. From extra-perihelion precession and possible changes in the third Kepler's law, we get an upper limit on the local dark matter density, rho_{DM} gravitational acceleration are really small. We examined the MOND interpolating function mu in the regime of strong gravity. Gradually varying mu suggested by fits of rotation curves are excluded, whereas the standard form mu(x)= x/(1+x^2)^{1/2} is still compatible with data. In combination with constraints from galactic rotation curves and theoretical considerations on the external field effect, the absence of any significant deviation from inverse square attraction in the solar system makes the range of acceptable interpolating functions significantly narrow. Future radio ranging observations of outer planets with an accuracy of few tenths of a meter could either give positive evidence of dark matter or disprove modifications of gravity.

M. Sereno; Ph. Jetzer

2006-06-08T23:59:59.000Z

410

Design and operation of a rotating drum radio frequency plasma reactor for the modification of free nanoparticles  

SciTech Connect (OSTI)

A rotating drum rf plasma reactor was designed to functionalize the surface of nanoparticles and other unusually shaped substrates through plasma polymerization and surface modification. This proof-of-concept reactor design utilizes plasma polymerized allyl alcohol to add OH functionality to Fe{sub 2}O{sub 3} nanoparticles. The reactor design is adaptable to current plasma hardware, eliminating the need for an independent reactor setup. Plasma polymerization performed on Si wafers, Fe{sub 2}O{sub 3} nanoparticles supported on Si wafers, and freely rotating Fe{sub 2}O{sub 3} nanoparticles demonstrated the utility of the reactor for a multitude of processes. X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy were used to characterize the surface of the substrates prior to and after plasma deposition, and scanning electron microscopy was used to verify that no extensive change in the size or shape of the nanoparticles occurred because of the rotating motion of the reactor. The reactor design was also extended to a non-depositing NH{sub 3} plasma modification system to demonstrate the reactor design is effective for multiple plasma processes.

Shearer, Jeffrey C.; Fisher, Ellen R. [Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872 (United States)

2013-06-15T23:59:59.000Z

411

Climate change action plan  

E-Print Network [OSTI]

Delivery Climate change action plan 2009-2011 #12;2 | Climate change action plan ©istockphoto.com #12;Climate Change Action Plan Climate change action plan | 3 Contents Overview 4 Preface and Introduction 5 Climate change predictions for Scotland 6 The role of forestry 7 Protecting and managing

412

Global CO/sub 2/ buildup and possible climate modification  

SciTech Connect (OSTI)

The non-local effects of fossil fuel power production due to the release of trace gases to the atmosphere are likely to be on a global scale. The eventual social and economic impacts of such global effects can be understood only after we have developed a detailed understanding of how the release of these gases influences the natural system. For CO/sub 2/, the impacts will likely be large if the resulting climatic changes seriously modify the amount of water contained in continental ice sheets. While there is considerable attention currently focussed on the CO/sub 2/ problem, the release of other trace gases, such as CO, may also have global consequences. The key to understanding these global changes and how and when they might occur, may well rest on our ability to characterize the history of the chemical composition of the atmosphere and successfully model those changes.

Stokes, G.M.

1981-02-01T23:59:59.000Z

413

EFFECT OF CLIMATE CHANGE ON WATERSHED RUNOFF FLOW - UPPER COOSA RIVER BASIN UPSTREAM FROM PLANT HAMMOND  

SciTech Connect (OSTI)

The ability of water managers to maintain adequate supplies in the coming decades depends on future weather conditions, as climate change has the potential to reduce stream flows from their current values due to potentially less precipitation and higher temperatures, and possibly rendering them unable to meet demand. The upper Coosa River basin, located in northwest Georgia, plays an important role in supplying water for industry and domestic use in northern Georgia, and has been involved in water disputes in recent times. The seven-day ten-year low flow (7Q10 flow) is the lowest average flow for seven consecutive days that has an average recurrence interval of 10 years. The 7Q10 flow is statistically derived from the observed historical flow data, and represents the low flow (drought) condition for a basin. The upper Coosa River basin also supplies cooling water for the 935MW coal-fired Hammond plant, which draws about 65% of the 7Q10 flow of the upper Coosa River to dissipate waste heat. The water is drawn through once and returned to the river directly from the generator (i.e., no cooling tower is used). Record low flows in 2007 led to use of portable cooling towers to meet temperature limits. Disruption of the Plant Hammond operation may trigger closure of area industrial facilities (e.g. paper mill). The population in Georgia is expected to double from 9 million to 18 million residents in the next 25 years, mostly in the metropolitan Atlanta area. Therefore, there will be an even greater demand for potable water and for waste assimilation. Climate change in the form of persistent droughts (causing low flows) and high ambient temperatures create regulatory compliance challenges for Plant Hammond operating with a once-through cooling system. Therefore, the Upper Coosa River basin was selected to study the effect of potential future weather change on the watershed runoff flow.

Chen, K.

2011-10-24T23:59:59.000Z

414

Annual Change Report 2003/2004  

SciTech Connect (OSTI)

As part of continuing compliance, the U.S. Environmental Protection Agency (EPA) requires the U.S. Department of Energy (DOE) to provide any change in information since the most recent compliance application. This requirement is identified in Title 40 Code of Federal Regulations (CFR), Section 194.4(b)(4), which states: No later than six months after the administrator issues a certification, and at least annually thereafter, the Department shall report to the Administrator, in writing, any changes in conditions or activities pertaining to the disposal system that were not required to be reported by paragraph (b)(3) of this section and that differ from information contained in the most recent compliance application. In meeting the requirement, the DOE provides an annual report of all changes applicable under the above requirement each November. This annual report informs the EPA of changes to information in the most recent compliance application, or for this report the 1996 Compliance Certification Application (CCA). Significant planned changes must be reported to the EPA prior to implementation by the DOE. In addition, Title 40 CFR, Section 194.4(b)(3) requires that significant unplanned changes be reported to the EPA within 24 hours or ten days, depending on the severity of the activity or condition. To date, there have been no significant unplanned changes to the certification basis. Planned changes have been submitted on an individual basis. All other changes are reported annually. The period covered by this Annual Change Report includes changes that occurred between July 1, 2003, and June 30, 2004. Changes in activities or conditions are reviewed to determine if 40 CFR Section 194.4(b)(3) reporting is necessary. As indicated above, no significant unplanned changes were identified for the time period covered by this report. The enclosed tables list those items identified for reporting under 40 CFR Section 194.4(b)(4). The majority of the changes described in this report are associated with modifications to written plans and procedures for WIPP operations.

Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

2004-11-10T23:59:59.000Z

415

FOCUS: HYDROGEN EXCHANGE AND COVALENT MODIFICATION ACCOUNT AND PERSPECTIVE  

E-Print Network [OSTI]

hydrogen exchange behavior, understand the underlying chemistry and structural physics of hydrogen exchange-protected by their H-bonding interactions, they engage in continual ex- change with the hydrogens of solvent water of the underlying chemistry and structural phys- ics of protein HX processes. The study of protein hydrogen exchange

Englander, S. Walter

416

Effect of micro-arc oxidation surface modification on the properties of the NiTi shape memory alloy  

Science Journals Connector (OSTI)

In this paper, the effects of micro-arc oxidation (MAO) surface modification (alumina coatings)...P<0.05).

J. L. Xu; Z. C. Zhong; D. Z. Yu; F. Liu

2012-12-01T23:59:59.000Z

417

Changes in 2-Hydroxyestrone and 16?-Hydroxyestrone Metabolism with Flaxseed Consumption: Modification by COMT and CYP1B1 Genotype  

Science Journals Connector (OSTI)

...metabolites was assessed with the Kruskal-Wallis test. Compared with baseline...Met, 1.50; P = 0.17, Kruskal-Wallis) and especially CYP1B1 (mean...Val, 1.51; P = 0.04, Kruskal-Wallis). Our findings suggest that...

Susan E. McCann; Jean Wactawski-Wende; Kari Kufel; James Olson; Bladimir Ovando; Susan Nowell Kadlubar; Warren Davis; Lisa Carter; Paola Muti; Peter G. Shields; Jo L. Freudenheim

2007-02-01T23:59:59.000Z

418

Changes in 2-Hydroxyestrone and 16?-Hydroxyestrone Metabolism with Flaxseed Consumption: Modification by COMT and CYP1B1 Genotype  

Science Journals Connector (OSTI)

...Fishers exact, P 0.006; Kruskal-Wallis ANOVA, P 0.021). ERRa levels...normal mammary epithelial cells (Kruskal-Wallis ANOVA, P 0.001). ERR overexpression...were tested by the nonparametric Kruskal-Wallis ANOVA (Figs. 1 2 3) . Associations...

Susan E. McCann; Jean Wactawski-Wende; Kari Kufel; James Olson; Bladimir Ovando; Susan Nowell Kadlubar; Warren Davis; Lisa Carter; Paola Muti; Peter G. Shields; Jo L. Freudenheim

2007-02-01T23:59:59.000Z

419

ARM - Climate Change  

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

FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Climate Change A Student's Guide to Global Climate Change The U.S. Environmental...

420

Climate change cripples forests  

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

Climate Change Cripples Forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality...

Note: This page contains sample records for the topic "tower modifications changing" 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

Climate change cripples forests  

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

Climate change cripples forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality...

422

Proposed modifications of NRC's standard review plan for seismic analysis  

Science Journals Connector (OSTI)

The paper briefly describes the major changes in seismic analysis and design criteria proposed in the U.S. NRC Standard Review Plan. The changes to the SRP also reflect the resolution of Unresolved Safety Issue (USI) A-40, Seismic Design Criteria. The proposed revision provides explicit guidelines for (1) developing site-specific spectra; (2) determination of suitable design time history (ies); (3) the location of seismic input motion; (4) developing floor response spectra; (5) soil-structure interaction (SSI) analysis; (6) analysis of above-ground Seismic Category 1 tanks; and (7) analysis of buried piping and structures. The proposed revision, together with its background material, was issued for public comments on 19 May, 1988, together with a solicitation to address specific questions related to SSI analysis. These are discussed in the paper. The paper concludes with a note on the importance of the progress made and outlines the areas requiring further studies and research.

G. Bagchi; D. Jeng; H. Ashar

1990-01-01T23:59:59.000Z

423

La Spezia power plant: Conversion of units 1 and 2 to combined cycle with modification of steam turbines from cross compound to tandem compound  

SciTech Connect (OSTI)

Units 1 and 2 of ENEL's La Spezia power plant, rated 310 and 325 MW respectively, are going to be converted to combined cycle. This project will be accomplished by integrating components such as gas turbines and HRSGs with some of the existing components, particularly the steam turbines, which are of the cross compound type. Since the total power of each converted unit has to be kept at 335 MW because of permitting limitations, the power delivered by the steam turbine will be limited to about 115 MW. For this reason a study was carried out to verify the possibility of having only one shaft and modifying the turbine to tandem compound. As additional investments are required for this modification, a balance was performed that also took into account the incremental heat rate and, on the other hand, the benefits from decreased maintenance and increased availability and reliability calculated for the expected useful life. The result of this balance was in favor of the modification, and a decision was taken accordingly. The turbine modification will involve replacing the whole HP section with a new combined HP-IP section while retaining the corresponding LP rotor and cylinder and making the needed changes in the valve arrangements and piping. Work on the site began in the spring of 1997 by dismantling the existing boiler so as to have the space needed to install the GTs and HRSGs. The first synchronization of the converted unit 1 is scheduled for November 1999

Magneschi, P.; Gabiccini, S.; Bracaloni, N.; Fiaschi, C.

1998-07-01T23:59:59.000Z

424

On modification of global warming by sulfate aerosols  

SciTech Connect (OSTI)

There is increasing evidence that the response of climate to increasing greenhouse gases may be modified by accompanying increases in sulfate aerosols. In this study, the patterns of response in the surface climatology of a coupled ocean-atmosphere general circulation model forced by increases in carbon dioxide alone is compared with those obtained by increasing carbon dioxide and aerosol forcing. The simulations are run from early industrial times using the estimated historical forcing and continued to the end of the twenty-first century assuming a nonintervention emissions scenario for greenhouse gases and aerosols. The comparison is made for the period 2030-2050 when the aerosol forcing is a maximum. In winter, the cooling due to aerosols merely tends to reduce the response to carbon dioxide, whereas in summer, it weakens the monsoon circulations and reverses some of the changes in the hydrological cycle on increasing carbon dioxide. This response is in some respects similar to that found in simulations with changed orbital parameters, as between today and the middle Holocene. The hydrological response in the palaeosimulations is supported by palaeoclimatic reconstructions. The results of changes in aerosol concentrations of the magnetic projected in the scenarios would have a major effect on regional climate, especially over Europe and Southeast Asia. 74 refs., 12 figs., 6 tabs.

Mitchell, J.F.B.; Johns, T.C. [Hadley Centre for Climate Prediction and Research, Berkshire (United Kingdom)] [Hadley Centre for Climate Prediction and Research, Berkshire (United Kingdom)

1997-02-01T23:59:59.000Z

425

Comment re DOE's NOI re continuation or modification of Price-Anderson Act  

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

re DOE's NOI re continuation or modification of re DOE's NOI re continuation or modification of Price-Anderson Act Comment re DOE's NOI re continuation or modification of Price-Anderson Act Comments of Kerr-McGee Corporation to the "Notice of Inquiry" by DOE seeking comments to assist in the preparation of a report to Congress concerning the continuation or modification of the Price-Anderson Act (the "Act"). These comments will focus solely on question 25 of the notice -- namely, whether the procedures in the Act governing administrative and judicial proceedings should be modified. 62 Fed. Reg. at 68,277. As you will see, we urge the amendment of the Act to implement Congress' goal of assuring a federal forum for any public liability action arising out of a nuclear incident that is presented to any court within the United States,

426

Simultaneous Sterilization With Surface Modification Of Plastic Bottle By Plasma?Based Ion Implantation  

Science Journals Connector (OSTI)

Dry sterilization of polymeric material is developed. The technique utilizes the plasma?based ion implantation which is same as for surface modification of polymers. Experimental data for sterilization are obtained by using spores of Bacillus subtilis as samples. On the other hand we previously showed that the surface modification enhanced the gas barrier characteristics of plastic bottles. Comparing the implantation conditions for the sterilization experiment with those for the surface modification we find that both sterilization and surface modification are simultaneously performed in a certain range of implantation conditions. This implies that the present bottling system for plastic vessels will be simplified and streamlined by excluding the toxic peroxide water that has been used in the traditional sterilization processes.

N. Sakudo; N. Ikenaga

2011-01-01T23:59:59.000Z

427

Intracellular Protein Modification Associated with Altered T Cell Functions in Autoimmunity1  

E-Print Network [OSTI]

-Ling Yang,* Hester A. Doyle,* Renelle J. Gee,* Jonathan D. Lowenson, Steven Clarke, Brian R. Lawson, Dana W. Aswad,§ and Mark J. Mamula2 *¶ Posttranslational protein modifications influence a number of immunologic

Clarke, Steven

428

Lignin Modification with Carboxylic Acids and Butyrolactone under Cold Plasma Conditions  

Science Journals Connector (OSTI)

The modification of organosolv lignin powder (ALCELL) with different carboxylic acids such as oleic, lactic, and butyric acids and butyrolactone under cold plasma discharge has been performed. The X-ray photoelectron spectroscopy (XPS), attenuated total ...

Oana Chirila; Marian Totolin; Georgeta Cazacu; Marius Dobromir; Cornelia Vasile

2013-09-05T23:59:59.000Z

429

Vermont Air Pollution Control Regulations, Major Stationary Sources and Major Modifications (Vermont)  

Broader source: Energy.gov [DOE]

This section of the air quality standards applies to all major sources and major modifications and outlines the required control technology to achieve the most stringent emission rate. Emission...

430

Surface Modification of Smectite Clay Induced by Non-thermal Gliding Arc Plasma at Atmospheric Pressure  

Science Journals Connector (OSTI)

Smectite clay from Sabga (west-Cameroon) was treated in aqueous suspension by gliding arc plasma to modify its surface properties. The evolution of the modifications was followed with the exposure time and pos...

Antoine Tiya Djowe; Samuel Laminsi

2013-08-01T23:59:59.000Z

431

Rheological Modification of Lubricating Greases with Recycled Polymers from Different Plastics Waste  

Science Journals Connector (OSTI)

Rheological Modification of Lubricating Greases with Recycled Polymers from Different Plastics Waste ... Tall, S.; Albertsson, A. C.; Karlsson, S. Recycling of Mixed Plastic Fractions: Mechanical Properties of Multicomponent Extruded Polyolefin Blends Using Response Surface Methodology J. Appl. ...

J. E. Martn-Alfonso; C. Valencia; M. C. Snchez; J. M. Franco; C. Gallegos

2009-03-12T23:59:59.000Z

432

Chemical and structural modifications of laser treated WTi surfaces at different ambient conditions  

Science Journals Connector (OSTI)

In this work we have studied the influence of laser modification on the composition and structure of tungsten titanium (WTi) thin films, deposited on n...-type (100) silicon wafers. After deposition, the samples ...

S. Petrovi?; D. Peruko; D. Milovanovi?; Z. Siketi?; M. Jaki?

2011-11-01T23:59:59.000Z

433

Plasma pencil A new small scale source for atmospheric surface modifications  

Science Journals Connector (OSTI)

Plasma pencil is a device which can produce plasma jet at atmospheric pressure and low power (10200 W ... to HF. The jet character of the plasma makes this device very efficient in aimed...2 mm2) modifications o...

J. Kousal; M. Klma; J. Jan?a; V. Kapicka; P. Slav?ek

2000-03-01T23:59:59.000Z

434

DE-AC27-10RV15051 Modification A001  

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

may be for any casino or other gambling establishment, aquarium, zoo, golf course, or swimming pool. DE-AC27-10RV15051 Modification A001 Page 7 of 12 D. Wage Rates All laborers...

435

Modification of the porosity of pillared clays by carbon deposition. I. Polymer carbonization  

Science Journals Connector (OSTI)

In order to use pillared clays (PILC) for selective adsorption, further modifications of ... on the porosity of Ti- and Al-PILC is discussed in terms of pore-blocking, ... resulted in a complete pore-blocking for...

N. Maes; E. F. Vansant

1996-01-01T23:59:59.000Z

436

Surface Modification of Layered Zirconium Phosphates: A Novel Pathway to Multifunctional Nanomaterials  

E-Print Network [OSTI]

The surface functionalization of inorganic nano particles for improved and novel applications is the topic of this dissertation; specifically the surface modification of inorganic layered materials. In this case the goal is to exclusively modify...

Mosby, Brian Matthew

2014-04-08T23:59:59.000Z

437

A modification of the stiefel-bettis method for nonlinearly damped oscillators  

Science Journals Connector (OSTI)

We report a modification of the Stiefel-Bettis method which is of trigonometric order one ... problems. We also discuss the modified Stiefel-Bettis method made explicit for the undamped nonlinear...

M. K. Jain

1988-01-01T23:59:59.000Z

438

A study of wind speed modification and internal boundary-layer heights in a coastal region  

Science Journals Connector (OSTI)

Wind profile data within the first two kilometres of a coast have been used to study the wind field modification downstream of this surface discontinuity. The land area is generally very flat, having an overal...

Hans Bergstrm; Per-Erik Johansson; Ann-Sofi Smedman

1988-03-01T23:59:59.000Z

439

Environmental Change Institute Environmental Change Institute  

E-Print Network [OSTI]

the functioning of forest ecosystems 16 Governing the world's tropical forests 18 Modelling new patterns of change Analysing water risks in a changing climate 34 A history of achievements Main cover photo: Wych Elm affecting it. We operate at global, national and local levels, working in partnership with people who can

Oxford, University of

440

Modification of model ethylenebutene copolymers using an organic peroxide  

Science Journals Connector (OSTI)

Well-characterized linear ethylenebutene-1 copolymers with polydispersities lower than 1.1 were modified using an organic peroxide with the purpose of assessing the relative importance of chain-linking processes. The copolymers used in this work were obtained by hydrogenation of polybutadienes, which were synthesized by anionic polymerization of butadiene. All the copolymers were modified in the molten state using 2,5-dimethyl-2,5 di(terbutyl peroxy)-hexane with concentrations varying on a ample range. The changes in the molecular structure of the polymers due to the chemical attack of the peroxide were evaluated combining selective solvent extraction and GPC-MALLS techniques. As expected, the critical concentration required for the onset of gelation, Cc, decreases with average molecular mass of the original copolymer. When concentrations of peroxide below Cc are employed, the weight-average molecular mass of the modified copolymers augments and the molecular mass distribution gets wider as the concentration of peroxide added to the copolymer increases. Although, the chain-linking reactions govern the modification process, there is a fraction of molecular chains that suffers scission. The measurable fraction of molecules having molecular mass lower than the original quasi-monodisperse copolymers ranges between 15% and 24% of the total mass when the copolymers were modified with concentrations of peroxide below Cc. Beyond the onset of gelation, the gel amount increases continuously with the peroxide concentration added to the copolymers. At a given peroxide concentration, the amount of gel produced for a given polymer is higher the greater is the initial molecular mass of the modified polymer. The limiting amount of gel was between 90% and 98% of the total mass, which was reached using concentrations 20 times larger than the critical one. The efficiency of the peroxide as cross-linking agent seems to be dependent on the concentration of peroxide.

Claudio J. Prez; Enrique M. Valls; Marcelo D. Failla

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower modifications changing" 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

Contract Number: DE-AC05-76RL01830 Modification M881  

E-Print Network [OSTI]

Contract Number: DE-AC05-76RL01830 Modification M881 Part I ­ The Schedule Section F Deliveries) Alternate I (Apr 1984) 1 F ­ 3 Deliverables 2 F ­ i #12;Contract Number: DE-AC05-76RL01830 Modification M881 F ­ 1 Period of Performance This Contract shall be effective as specified in Block No. 3 ­ Effective

442

Contract Number: DE-AC05-76RL01830 Modification M881  

E-Print Network [OSTI]

Contract Number: DE-AC05-76RL01830 Modification M881 B-i Part I ­ The Schedule Section B Supplies.......................................................1 #12;Contract Number: DE-AC05-76RL01830 Modification M881 B-1 B­1 Designation of Work in this Contract and as designated in writing from time to time by DOE, including the utilization of information

443

Contract Number: DE-AC05-76RL01830 Modification A508  

E-Print Network [OSTI]

Contract Number: DE-AC05-76RL01830 Modification A508 E-1 Part I ­ The Schedule Section E Inspection) .........................................................................1 E ­ i #12;Contract Number: DE-AC05-76RL01830 Modification A508 E-1 E ­ 1 52.246-9 Inspection the work performed or being performed under the Contract, and the premises where the work is being

444

Contract Number: DE-AC05-76RL01830 Modification M971  

E-Print Network [OSTI]

Contract Number: DE-AC05-76RL01830 Modification M971 PART III ­ List of Documents, Exhibits-Owned Facilities and Real Property J-J-i #12;Contract Number: DE-AC05-76RL01830 Modification M971 ADVANCE AGREEMENT that in consideration of the extension of Contract No. DE- AC05-76RL01830 (hereinafter referred to as "the PNNL Prime

445

Temperature distribution and modification mechanism inside glass with heat accumulation during 250 kHz irradiation of femtosecond laser pulses  

SciTech Connect (OSTI)

Heat accumulation by high repetition rate femtosecond laser irradiation inside glass generates a much larger modification than that by a single pulse. In this study, we determined the temperature distribution due to heat accumulation and the characteristic temperature for heat modification inside a soda lime glass by analyzing the relationship between the radius of modification and glass temperature. The validity of the analysis was confirmed by reproducing the modification due to two-beam irradiation. The determined characteristic temperature suggested that the temperature distribution and the spatial dependence of the stress relaxation are important in the mechanism of heat modification.

Sakakura, Masaaki; Shimotsuma, Yasuhiko [Innovative Collaboration Center of Kyoto University, Kyoto 615-8520 (Japan); Shimizu, Masahiro; Miura, Kiyotaka; Hirao, Kazuyuki [Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510 (Japan)

2008-12-08T23:59:59.000Z

446

Proposed modifications to the RCRA post-closure permit for the Bear Creek Hydrogeologic Regime at the US Department of Energy Y-12 Plant, Oak Ridge, Tennessee  

SciTech Connect (OSTI)

This report presents proposed modifications to several conditions of the Resource Conservation and Recovery Act (RCRA) Post-Closure Permit (PCP) for the Bear Creek Hydrogeologic Regime (BCHR). These permit conditions define the requirements for RCRA post-closure corrective action groundwater monitoring at the S-3 Ponds, the Oil Landfarm, and the Bear Creek Burial Grounds (units A, C-West, and Walk-in Pits). Modification of these PCP conditions is requested to: (1) clarify the planned integration of RCRA post-closure corrective action groundwater monitoring with the monitoring program to be established in the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Record of Decision (ROD) for the Bear Creek Valley (BCV) Watershed, (2) revise several of the current technical requirements for groundwater monitoring based on implementation of the RCRA post-closure corrective action monitoring program during 1996, and (3) update applicable technical procedures with revised versions recently issued by the Y-12 Plant Groundwater Protection Program (GWPP). With these modifications, the Y-12 Plant will continue to meet the full intent of all regulatory obligations for post-closure care of these facilities. Section 2.0 provides the technical justification for each proposed permit modification. The proposed changes to permit language are provided in Section 3.0 (S-3 Ponds), Section 4.0 (Oil Landfarm), and Section 5.0 (Bear Creek Burial Grounds). Sections 6.0 and 7.0 reference updated and revised procedures for groundwater sampling, and monitoring well plugging and abandonment, respectively. Appendix A includes all proposed revisions to the PCP Attachments.

NONE

1997-05-01T23:59:59.000Z

447

Reducing disorder in graphene nanoribbons by chemical edge modification  

SciTech Connect (OSTI)

We present electronic transport measurements on etched graphene nanoribbons on silicon dioxide before and after a short hydrofluoric acid (HF) treatment. We report on changes in the transport properties, in particular, in terms of a decreasing transport gap and a reduced doping level after HF dipping. Interestingly, the effective energy gap is nearly unaffected by the HF treatment. Additional measurements on a graphene nanoribbon with lateral graphene gates support strong indications that the HF significantly modifies the edges of the investigated nanoribbons leading to a significantly reduced disorder potential in these graphene nanostructures.

Dauber, J.; Terrs, B.; Volk, C.; Stampfer, C. [JARA-FIT and II. Institute of Physics, RWTH Aachen University, 52074 Aachen (Germany); Peter Grnberg Institute (PGI-8/9), Forschungszentrum Jlich, 52425 Jlich (Germany); Trellenkamp, S. [Peter Grnberg Institute (PGI-8/9), Forschungszentrum Jlich, 52425 Jlich (Germany)

2014-02-24T23:59:59.000Z

448

Solar Updraft TowersSolar Updraft Towers Presentation 5  

E-Print Network [OSTI]

to drive large turbines to generate electricity (basic engine). #12;Two Primary FactorsTwo Primary Factors gastraditional forms of natural gas energy production #12;Social & Economical BenefitsSocial & Economical of initial capital Efficiency & Production Cost Cost/kWh is higher than traditional forms of natural

Prevedouros, Panos D.

449

Trump International Hotel & Tower Chicago Trump International Hotel & Tower Chicago  

E-Print Network [OSTI]

and detail-oriented amenities, including personal attaché service. 339 graciously appointed guestrooms

Pritchard, Jonathan

450

Probabilistic analysis and operational data in response to NUREG-0737, Item II. K. 3. 2 for Westinghouse NSSS plants. [Modifications to reduce LOCA due to stuck-open power-operated relief valve  

SciTech Connect (OSTI)

This report describes various modifications to Westinghouse plants since TMI and, using probabilistic analysis via event trees, estimates the effect of the post-TMI changes, including an automatic (PORV) (power operated relief valve) isolation concept identified in NUREG-0731 item II.K.3.1. The requested safety valve operational data is included as an appendix. A significant reduction in the frequency of a small break LOCA, due to a stuck open PORV has already been achieved by the modifications made subsequent to TMI. Domestic Westinghouse operating plant data (based on 181 reactor years of operation) has been collected and evaluated. An auto block valve closure system has been evaluated. The analysis is generally applicable to all Westinghouse plants which have incorporated the post-TMI hardware and procedural changes relative to stuck-open PORVs.

Wood, D.C.; Gottshall, C.L.

1981-02-01T23:59:59.000Z

451

Federal Energy Management Program: Continuous Change Institutional Change  

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

Continuous Change Continuous Change Institutional Change Principle to someone by E-mail Share Federal Energy Management Program: Continuous Change Institutional Change Principle on Facebook Tweet about Federal Energy Management Program: Continuous Change Institutional Change Principle on Twitter Bookmark Federal Energy Management Program: Continuous Change Institutional Change Principle on Google Bookmark Federal Energy Management Program: Continuous Change Institutional Change Principle on Delicious Rank Federal Energy Management Program: Continuous Change Institutional Change Principle on Digg Find More places to share Federal Energy Management Program: Continuous Change Institutional Change Principle on AddThis.com... Sustainable Buildings & Campuses Operations & Maintenance

452

Recreation of Brnsted acid sites in phosphorus-modified HZSM-5(Ga) by modification with various metal cations  

Science Journals Connector (OSTI)

Abstract To investigate the recreation of Brnsted acid sites in phosphorus-modified HZSM-5(Ga) zeolites by modification with various metal cations, we prepared several HZSM-5(Ga) zeolites co-modified with Mg, Ca, La or Zr and P (M/P/HZSM-5(Ga)). From FT-IR, 31P MAS NMR, and NH3-TPD measurements, it was found that the introduced metal cations (M) of Mg, Ca, La, and Zr react with the pre-introduced phosphorus to generate phosphorus species such as Mx(PO4)y, resulting in the recreation of some native Brnsted acid sites (Si(OH)Ga). The degree of recreation of the Brnsted acid sites was strongly dependent on the M/Ga ratio and doped metal valence. Modification with La and Zr that have higher valences more effectively recreated the Brnsted acid sites compared to Mg and Ca, which have di-valence. The conversion of ethanol to propylene was carried out over the M/P/HZSM-5(Ga). The propylene yield increased with increasing M/Ga ratio and reached maximum values of ca. 26C-% for Zr/P/HZSM-5(Ga) with a Zr/Ga ratio of 0.25 and ca. 29C-% for La/P/HZSM-5(Ga) with a La/Ga ratio of 0.4. The propylene yield hardly changed for the co-modified HZSM-5(Ga) zeolites during the 24h of reaction time, indicating the suppression of both carbonaceous deposition and the release of gallium from the zeolite framework.

Nao Tsunoji; Takushi Sonoda; Yoshiyasu Furumoto; Masahiro Sadakane; Tsuneji Sano

2014-01-01T23:59:59.000Z

453

Towers and Bridges Civil Engineering  

E-Print Network [OSTI]

as a Structural Engineer? 2. How do you use Google Sketchup? 3. How do you account for the forces that act with Google Sketchup (free download) 4. Notebook paper 5. Testing device (sling with 2.5 pound weights

Provancher, William

454

Cooling Tower Energy Conservation Optimization  

E-Print Network [OSTI]

? State of art retrofit, pumping head reduction methodology and hydraulic calculations will be discussed with actual field illustrations....

Burger, R.

455

Sandia National Laboratories: Solar Tower  

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

Power, EC, Energy, National Solar Thermal Test Facility, News, Partnership, Renewable Energy, Solar On June 26 and 27, a series of exposures were made to multiple Boeing test...

456

Sandia National Laboratories: Solar Tower  

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

Plan Webinar Wednesday, Jan. 14 Sandian Presents on PV Failure Analysis at European PV Solar Energy Conference and Exhibition (EU PVSC) EC Top Publications Design and Analysis...

457

Cooling Towers, Energy Conservation Machines  

E-Print Network [OSTI]

area, and dollars Redwood, were beyond their useful life and would accrue over the alternative installa were warped and considerably out of position tion of new O.E.M. equipment. Another con in many areas for good heat transfer utili sideration... bar fill packing on 8" verti cal centers spaced 8" horizontally apart. The water distribution system was fabricated from Redwood in closed troughs, gravity feed falling on splash cup distribution devices, Fig. 1. The drift eliminators...

Burger, R.

1980-01-01T23:59:59.000Z

458

Sandia National Laboratories: Power Towers  

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

Doppler Velocimeter EC Top Publications A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study Nonlinear Time-Domain...

459

Sandia National Laboratories: anemometer towers  

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

Doppler Velocimeter EC Top Publications A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study Nonlinear Time-Domain...

460

Environment and Climate Change  

E-Print Network [OSTI]

Migration, Environment and Climate Change: ASSESSING THE EVIDENCE #12;The opinions expressed;Migration, Environment and Climate Change: ASSESSING THE EVIDENCE Edited by Frank Laczko and Christine with with the financial support of #12;3 Migration, Environment and Climate Change: Assessing the Evidence Contents

Galles, David

Note: This page contains sample records for the topic "tower modifications changing" 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

Forest Research: Climate Change  

E-Print Network [OSTI]

Forest Research: Climate Change projects Forest Research is part of the Forestry Commission of climate change-related research is wide-ranging, covering impact assessment and monitoring, adaptation around a quarter of its research budget with Forest Research on climate change and related programmes

462

Climate Change Workshop 2007  

E-Print Network [OSTI]

1 Climate Change Workshop 2007 Adaptive Management and Resilience Relevant for the Platte River, UNL Climate Change Workshop 2007 · Resilience ·Why it matters · Adaptive Management ·How it helps ·Adaptive Capacity · What it is Overview Climate Change Workshop 2007 "A public Domain, once a velvet carpet

Nebraska-Lincoln, University of

463

programs in climate change  

E-Print Network [OSTI]

existing programs in climate change science and infrastructure. The Laboratory has a 15- year history in climate change science. The Climate, Ocean and Sea Ice Modeling (COSIM) project develops and maintains advanced numerical models of the ocean, sea ice, and ice sheets for use in global climate change

464

Campus Conversations: CLIMATE CHANGE  

E-Print Network [OSTI]

review and input from scholars with expertise in climate change and communication. #12; Welcome Thank youCampus Conversations: CLIMATE CHANGE AND THE CAMPUS Southwestern Pennsylvania Program booklet is an adaptation and updating of Global Warming and Climate Change, a brochure developed in 1994

Attari, Shahzeen Z.

465

Response to 'Comment on 'Controllable local modification of fractured Nb-doped SrTiO{sub 3} surfaces' [Appl. Phys. Lett. 98, 256102 (2011)'.  

SciTech Connect (OSTI)

In their comment, Chen et al. try to argue that the experimentally observed controllable voltage-induced surface modification, which was attributed to a local electric field-induced atom transfer from the surface to the tip, is rather caused by either an oxidation process and/or a resistance change. In this response, we will show that we can rule out these two effects in our experiment. The statements by Chen et al. are based on two arguments: (1) the tip modification after transferring an adatom should alter the dI/dV contrast, which was not seen in our experiments and (2) the vacuum conditions in our experiment are similar to earlier reports on resistance switching. First, Chen et al. discuss that the adsorption on the tip should alter the topographic contrast, as many papers have reported. In fact, in our experiments we frequently observed tip modifications at high bias voltage. These typically result in slight changes in scanning tunneling spectroscopy data [see, for example, the spectra in Fig. 3(b) in Ref. 4 and Fig. 2(d) of Ref. 5] but only weakly affected the topographic contrast. Second, Chen et al. claim that oxidation is another possible mechanism to explain our experimental observations. To support this claim, they compare our results to an earlier publication showing resistance switching. In fact, the resistance switching mechanism is related to oxygen vacancy migration or local surface oxidation. The mechanism of oxygen vacancy migration requires a 'forming' process with a threshold current in the order of microampere or even milliampere. In our experimental setup, however, we used tunneling currents in the order of 50 pA. Even during surface modification, which was performed at open feedback loop conditions with voltage pulse of up to 3 or -5 V, the maximum transient current did not exceed a few nanoampere. Therefore, we can safely exclude oxygen vacancy migration as a potential mechanism for the observed surface modification. As a second potential mechanism Chen et al. mention a local surface oxidation process. However, the total pressure at high-vacuum conditions used in experiments, where resistance switching was observed (10{sup -7} torr in Ref. 3) is three order magnitude higher than in our experiment performed under ultrahigh vacuum (UHV) conditions (below 10{sup -10} torr). Furthermore, mass spectra measured with a residual gas analyzer show that the main residue gas in our UHV system is hydrogen ({approx} 90%). Water, oxygen, and other oxygen-related gases are negligible with a partial pressure in the order of 10{sup -12} torr range or lower. Therefore, we can also exclude that local oxidation with reactants from the residual gas causes the observed modifications. In addition, in our experiment, the refilling of the modified areas at negative bias could not be observed with fresh tip, even for bias voltages as high as -10 V. In short, the mechanism for the modification on the UHV in situ fractured Nb:SrTiO{sub 3} (Nb-doped Strontium titanate) surfaces with scanning tunneling microscope (STM) tip is different from the mechanisms such as local surface oxidation or filament formation, used to explain the largecurrent induced resistance switching works.

Chien, T. Y.; Santos, T. S.; Bode, M.; Guisinger, N. P.; Freeland, J. W. (Center for Nanoscale Materials); ( XSD); (Univ. of Wurzburg)

2011-06-20T23:59:59.000Z

466

Interrelated modification of excitatory and inhibitory synapses in three-layer olivary-cerebellar neural network  

Science Journals Connector (OSTI)

The model of three-layer olivary-cerebellar neural network with modifiable excitatory and inhibitory connections between diverse elements is suggested. The same Hebbian modification rules are proposed for Purkinje cells, granule (input) cells, and deep cerebellar nuclei (output) cells. The inverse calcium-dependent modification rules for these cells and hippocampal/neocortical neurones or Golgi cells are conceivably the result of the involvement of cGMP and cAMP in postsynaptic processes. The sign of simultaneous modification of excitatory and inhibitory inputs to a cell is opposite and determined by the variations in pre- and/or postsynaptic cell activity. Modification of excitatory transmission between parallel fibers and Purkinje cells, mossy fibers and granule cells, and mossy fibers and deep cerebellar nuclei cells essentially depends on inhibition effected by stellate/basket cells, Golgi cells and Purkinje cells, respectively. The character of interrelated modifications of diverse synapses in all three layers of the network is influenced by olivary cell activity. In the absence (presence) of a signal from inferior olive, the long-term potentiation (depression) in the efficacy of a synapse between input mossy fiber and output cell can be induced. The results of the suggested model are in accordance with known experimental data.

Isabella Silkis

2000-01-01T23:59:59.000Z

467

New Papers Indicate Climate Change May Intensify Chemical Risks  

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

New Papers Indicate Climate Change May Intensify Chemical Risks Print E-mail New Papers Indicate Climate Change May Intensify Chemical Risks Print E-mail Climate Change and Chemical Risks Wednesday, February 27, 2013 Featured by NIEHS a member of the U.S. Global Change Research Program Pesticides, air pollutants, and other contaminants could become increasingly harmful to human health due to climate change, according to a new series of papers published in Environmental Toxicology Chemistry (ET&C). The seven publications, which appeared in ET&C's January 2013 issue, present evidence that climate change could affect how chemicals are transported and cause toxicity in both ecosystems and people. These impacts could mean that chemical risk assessment practices will demand swift modification and adaptation. "Risk assessors and public health practitioners need to understand how climate change may alter chemical risks to people in the future," said one of the papers' lead authors John Balbus, M.D., who is leading the National Institute of Environmental Health Sciences's (NIEHS) Global Environmental Health and Sustainable Development projects. "Existing data sources and assumptions used in exposure and risk assessment may not apply. Environmental health researchers and risk assessors will need to consider interactions between climate-related stressors and chemical stressors and other ways that future risks may be changing," he added.

468

The Relativistic Heavy Ion Collider (RHIC) cryogenic system at Brookhaven National Laboratory: Review of the modifications and upgrades since 2002 and planned improvements.  

SciTech Connect (OSTI)

Brookhaven National Laboratory continues its multi-year program to improve the operational efficiency, reliability, and stability of the cryogenic system, which also resulted in an improved beam availability of the Relativistic Heavy Ion Collider (RHIC). This paper summarizes the work and changes made after each phase over the past four years to the present, as well as proposed future improvements. Power usage dropped from an initial 9.4 MW to the present 5.1 MW and is expected to drop below 5 MW after the completion of the remaining proposed improvements. The work proceeded in phases, balancing the Collider's schedule of operation, time required for the modifications and budget constraints. The main changes include process control, compressor oil removal and management, elimination of the use of cold compressors and two liquid-helium storage tanks, insulation of the third liquid-helium storage tank, compressor-bypass flow reduction and the addition of a load turbine (Joule-Thomson ex

Than, R.; Tuozzolo, Joseph; Sidi-Yekhlef, Ahmed; Ganni, Venkatarao; Knudsen, Peter; Arenius, Dana

2008-03-01T23:59:59.000Z

469

Influence of a Modification of the Petcoke/Coal Ratio on the Leachability of Fly Ash and Slag Produced from a Large PCC Power Plant  

SciTech Connect (OSTI)

Co-firing of coal with inexpensive secondary fuels such as petroleum coke is expected to increase in the near future in the EU given that it may provide certain economic and environmental benefits with respect to coal combustion. However, changes in the feed fuel composition of power plants may modify the bulk content and the speciation of a number of elements in fly ash and slag. Consequently, leachability of these byproducts also can be modified. This study is focused on identifying the changes in the environmental quality of co-fired fly ash and slag induced by a modification of the petcoke/coal ratio. Petcoke was found to increase the leachable content of V and Mo and to enhance the mobility of S and As. However, with the exception of these elements, the addition of this secondary fuel did not drastically modify the bulk composition or the overall leachability of the resulting fly ash and slag.

Izquierdo,M.; Font, O.; Moreno, N.; Querol, X.; Huggins, F.; Alvarez, E.; Diez, S.; Otero, P.; Ballesteros, J.; Gimenez, A.

2007-01-01T23:59:59.000Z

470

EA-1936: Proposed Changes to Parcel ED-1 Land Uses, Utility Infrastructure,  

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

6: Proposed Changes to Parcel ED-1 Land Uses, Utility 6: Proposed Changes to Parcel ED-1 Land Uses, Utility Infrastructure, and Natural Area Management Responsibility, Oak Ridge, Tennessee EA-1936: Proposed Changes to Parcel ED-1 Land Uses, Utility Infrastructure, and Natural Area Management Responsibility, Oak Ridge, Tennessee SUMMARY NOTE: This EA has been cancelled. This EA will evaluate the environmental impacts of DOE's proposed modifications to the allowable land uses, utility infrastructure, and Natural Area management responsibility for Parcel ED-1. The purpose of the modifications is to enhance the development potential of the Horizon Center business/industrial park, while ensuring protection of the adjacent Natural Area. The area addressed by the proposed action was evaluated for various industrial/business uses in the

471

NOAA federal/state cooperative program in atmospheric modification research. Collected publication titles and abstracts. Technical memo  

SciTech Connect (OSTI)

The volume contains the titles and abstracts of technical publications through fiscal year 1992 that are the products of the NOAA Federal/State Cooperative Program in Atmospheric Modification Research. The program is focused on the very interdisciplinary science of purposeful cloud modification for precipitation enhancement and hail suppression, and unintentional modification of clouds and precipitation. The audience includes, for example, water managers, policy makers, scientists, practitioners in the field, and the interested public. Listed are publications on topics including but not limited to: cloud and precipitation processes, numerical cloud and atmospheric mesoscale modeling, atmospheric and storm monitoring instrumentation and technologies, aerosol transport and dispersion in clouds and over complex terrain, cloud seeding technologies and effects, agricultural responses to cloud modification, weather economics and societal aspects of cloud modification, unintentional weather and climate modification, and precipitation and hydrological assessment and forecasting.

Reinking, R.F.

1993-04-01T23:59:59.000Z

472

Microsoft Word - Naselle Tap Modification Loop to Driscoll Sub CX.doc  

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

7, 2010 7, 2010 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Amy Freel Project Manager - TEP-CSB-2 Proposed Action: Naselle Tap Modification Loop into Driscoll Substation Budget Information: Work order 231878 task 03 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.11 Construction or modification of electric power substations. B4.6 Additions/modifications to electric power transmission facilities within previously developed area. Location: Clatsop County, Oregon Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to expand the existing Driscoll Substation to accommodate a 115-kV ring bus and rebuild 2 ½ miles of the Allston-Astoria No. 1 line to

473

Brine pH Modification Scale Control Technology. 2. A Review.pdf | Open  

Open Energy Info (EERE)

Brine pH Modification Scale Control Technology. 2. A Review.pdf Brine pH Modification Scale Control Technology. 2. A Review.pdf Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Brine pH Modification Scale Control Technology. 2. A Review.pdf Abstract A variety of processes has been deployed at geothermalfields to inhibit or control siliceous scale deposition. It has beenknown for decades that the kinetics of silicic acid polymerizationis retarded when the pH of an aqueous solution is decreased.Therefore, a potential method for controlling siliceous scalingfrom geothermal brine is treatment with acid. Early attempts tocontrol siliceous scaling in geothermal brine-handling equipmentby retarding polymerization led to the belief that the pHhad to be reduced to < 4. Acidifying brine was discourageddue to corrosion concerns.

474

Microsoft Word - Permit Change 10-23-08  

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

New Mexico Environment Department Approves Permit Change for WIPP CARLSBAD, N.M., October 23, 2008 - The New Mexico Environment Department (NMED) today approved a permit change to the U. S. Department of Energy's (DOE) Waste Isolation Pilot Plant (WIPP), which demonstrates that 15 WIPP site locations have been compliant with environmental protection requirements. The permit change eliminates continued sampling and analysis at these locations. Sampling data, collected by DOE over a 10-year period from the 15 locations, indicated that the areas posed no risk to human health or the environment. Last year, DOE submitted a Class 3 permit modification request to NMED to discontinue sampling of the areas, which included a number of mud pits constructed for exploratory boreholes, an evaporation pond and

475

Soil surface modification in the Trans-Pecos region of Texas  

E-Print Network [OSTI]

Percent composition by species; separated by treatment and strip width. 43 LIST OF FIGURES ~Fi ure 1 Tz'ans-Pecos soil surface modification study area. ~Pa e 10 INTRODUCTION Water is one of the most prized but limited natural resources... 0 0 2 0 Figure 1. Trans-Pecos soil surface modification study ares. level from 1-mf areas at 3. 05-m intervals on three perpendicular lines down slope of each treatment in early June and October 1979. One line was established 0. 9-m to the north...

Merrill, Clifton Edwards

2012-06-07T23:59:59.000Z

476

Quantitative Nuclear Magnetic Resonance Spectroscopy as a Tool To Evaluate Chemical Modification of Deep Hydrotreated Recycled Lube Oils  

Science Journals Connector (OSTI)

Quantitative Nuclear Magnetic Resonance Spectroscopy as a Tool To Evaluate Chemical Modification of Deep Hydrotreated Recycled Lube Oils ... Argonne National Laboratory, Argonne, Illinois 60439, United States ...

John V. Muntean; Joseph A. Libera; Seth W. Snyder; Tianpin Wu; Donald C. Cronauer

2012-12-13T23:59:59.000Z

477

Digital Measures screen changes 1 Digital Measures screen changes 2  

E-Print Network [OSTI]

Digital Measures screen changes 1 #12; Digital Measures screen changes 2 #12; Digital Measures screen changes 3 #12; Digital Measures screen changes 4 #12; Digital Measures screen changes 5 #12; Digital Measures screen changes 6 #12; Digital Measures screen changes 7 #12

Barrash, Warren

478

Oversight and Change  

National Nuclear Security Administration (NNSA)

the Baseline Change Proposal process. Two 400,000-gallon fire protection water supply tanks and associated pumping facilities were added. Later in the project, an additional...

479

Change Control Management Guide  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The Guide provides a suggested approach and uniform guidance for managing project and contract changes through applying the requirements of DOE O 413.3B. No cancellation.

2011-07-29T23:59:59.000Z

480

Corporate Climate Change Adaptation.  

E-Print Network [OSTI]

?? On-going and future climate change is universally acknowledged. Climate changeincorporating global mean temperature rise, impacts on global hydrology and ecosystems willaffect human society and (more)

Herbertsson, Nicole

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower modifications changing" 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

Climate Change, Drought & Environment  

Broader source: Energy.gov [DOE]

Afternoon Plenary Session: Current Trends in the Advanced Bioindustry Climate Change, Drought, and EnvironmentMichael Champ, Executive Director, The Sustainable Water Challenge

482

Leadership Institutional Change Principle  

Broader source: Energy.gov [DOE]

For changing behavior among employees, leaders in Federal agencies should visibly communicate their own commitments to sustainability in the workplace. Such visible leadership will help achieve...

483

Commitment Institutional Change Principle  

Broader source: Energy.gov [DOE]

Commitment can be a crucial element that helps Federal agencies inject and emphasize sustainability in their organizational culture. Institutions and people change when they have made definite...

484

THE WEEK'S PRICE CHANGES  

Science Journals Connector (OSTI)

THE WEEK'S PRICE CHANGES ... Socony Vacuum Oil Co. effected a second reduction in its prices for No. 2 fuel oil and ... ...

1950-02-27T23:59:59.000Z

485

CX-006972: Categorical Exclusion Determination | Department of Energy  

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

72: Categorical Exclusion Determination 72: Categorical Exclusion Determination CX-006972: Categorical Exclusion Determination 285-H Cooling Tower Basin Well Water Makeup Supply Bypass CX(s) Applied: B1.5 Date: 09/16/2011 Location(s): Aiken, South Carolina Office(s): Environmental Management, National Energy Technology Laboratory Install bypass on makeup well water supply to cooling tower 285-11H per M-MT-H-07595. The location of the work is outdoors in the vicinity of, and adjacent to the 285-H basin and the 285-11H tower. This modification will not change the chemical or physical parameters of the water entering the 285-11H basin, nor will it change the ultimate destination of flush water or basin overflow. The only consequential change will be the chemical characteristics of the 285-H overflow. Due to the new bypass entering the

486

"Managing Department Climate Change"  

E-Print Network [OSTI]

"Managing Department Climate Change" #12;Presenters · Ronda Callister Professor, Department Department Climate? · Assesment is essential for determining strategies for initiating change · In a research climate · Each panelist will describe an intervention designed to improve department climate ­ Ronda

Sheridan, Jennifer

487

General Indicators: Change from  

E-Print Network [OSTI]

in 1 business day 82% -11% 100% 100% 100% 100% 78% Quality Inspections Completed 100% No Change 95% - - 100% Non-FLS 81% No Change 70% Key: See Definitions Document for descriptions of performance measures: All Districts Combined District Breakdown Steam/Chilled Water Electric 77% 92% 0 2 100% - Met Target

Webb, Peter

488

General Indicators: Change from  

E-Print Network [OSTI]

% 100% 100% 67% 98% Quality Inspections Completed 100% No Change 95% 100% 100% 100% 100% Utilities Definitions Document for descriptions of performance measures and specific color code target values. Trend District Breakdown Steam/Chilled Water - 76% 92% - Improvement No Change Met Target Requires Review

Webb, Peter

489

General Indicators: Change from  

E-Print Network [OSTI]

's): Quantity 10 No Change 100 1 1 3 5 Completed in 1 business day 70% -10% 100% 100% 0% 100% 60% Quality measures and specific color code target values. Trend status color indicators ­ identifies changes from the prior month: Steam/Chilled Water Electric 84% 84% 4 3 - - Met Target Requires ReviewMissed Target

Webb, Peter

490

Indicators: Change from  

E-Print Network [OSTI]

% Quality Inspections Completed 99% No Change 95% 100% 100% 99% 100% Utilities: Performance Statistics of performance measures and specific color code target values. Trend status color indicators ­ identifies changes SCORECARD All Districts Combined District Breakdown Steam/Chilled Water June 2008 All Districts Combined All

Webb, Peter

491

Modifications in the AA5083 Johnson-Cook Material Model for Use in Friction Stir Welding  

E-Print Network [OSTI]

Modifications in the AA5083 Johnson-Cook Material Model for Use in Friction Stir Welding- turing processes involving plastic deformation of metallic materials. The main attraction to this model (e.g., those associated with the influence of plastic deformation, rate of deformation

Grujicic, Mica

492

Metabolic transformation of microalgae due to light acclimation and genetic modifications  

E-Print Network [OSTI]

Metabolic transformation of microalgae due to light acclimation and genetic modifications followed is distinguished with a high level of plasticity, where environ- mental conditions, e.g., nitrogen starvation, can modications can be used for metabolic engineering to achieve, e.g., increased lipid production.8

Vertes, Akos

493

Improvement of output coupling efficiency of organic light-emitting diodes by backside substrate modification  

E-Print Network [OSTI]

modification C. F. Madigan, M.-H. Lu, and J. C. Sturma) Center for Photonics and Optoelectronic Materials, Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544 Received 8 November and at least triple it when high-index plastic substrates are used. The work is accompa- nied by modeling

494

Artificial Neural Network Modification of Simulation-Based Fitting:? Application to a Protein?Lipid System  

Science Journals Connector (OSTI)

Artificial Neural Network Modification of Simulation-Based Fitting:? Application to a Protein?Lipid System ... In our research the optimal number of neurons was estimated using the exhaustive search method. ... The application of feed forward back propagation artificial neural networks with one hidden layer (ANN) to perform the equiv. of multiple linear regression (MLR) has been examd. ...

Petr V. Nazarov; Vladimir V. Apanasovich; Vladimir M. Lutkovski; Mikalai M. Yatskou; Rob B. M. Koehorst; Marcus A. Hemminga

2004-01-17T23:59:59.000Z

495

Laser Surface Modification of a Crystalline Al-Co-Ce Alloy for Enhanced Corrosion  

E-Print Network [OSTI]

#12;Laser Surface Modification of a Crystalline Al-Co-Ce Alloy for Enhanced Corrosion Resistance hardness, structure manipula- tion, and improvements in corrosion resistance of metallic materials.[1 surface modify steel and aluminum alloys for improved corrosion resistance.[3,4] The enhanced corrosion

Fitz-Gerald, James M.

496

Synoptic weather patterns and modification of the association between air pollution and human mortality  

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of frequently occurring weather patterns. Typical time-series investigations of health risk from air pollutionSynoptic weather patterns and modification of the association between air pollution and human pollution and mortality, an examination of air pollution and human mortality associations (ecologic) using

Sheridan, Scott

497

PROPOSED MODIFICATION TO THE ACI 318-02 CODE EQUATION ON BOND STRENGTH FOR MMFX STEEL  

E-Print Network [OSTI]

ST-263-1 PROPOSED MODIFICATION TO THE ACI 318-02 CODE EQUATION ON BOND STRENGTH FOR MMFX STEEL R the bond characteristics of Micro-composite Multi-structural Formable reinforcing steel rebars of the current equation of the ACI 318-02 Code on bond to predict the bond capacity of the MMFX steel rebars

498

Assisting Web Search Using Query Suggestion Based on Word Similarity Measure and Query Modification  

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. For example, when the word "Tiger" is entered by a user, current web search engines are mostly focusedAssisting Web Search Using Query Suggestion Based on Word Similarity Measure and Query Modification search engines is query suggestion (QS), which assists users in formulating keyword queries by suggesting

Ng, Yiu-Kai Dennis

499

Modeling of J/? modifications in deuteron-nucleus collisions at high energies  

Science Journals Connector (OSTI)

Understanding the detailed production and hadronization mechanisms for heavy quarkonia and their modification in a nuclear environment presents one of the major challenges in QCD. Calculations including nuclear-modified parton distribution functions (nPDFs) and the fitting of breakup cross sections (?br) as parameters have been successful at describing many features of J/? modifications in proton (deuteron)-nucleus collisions. In this paper, we extend these calculations to explore different geometric dependencies of the modifications and confront them with new experimental results from the PHENIX experiment. We find that no combination of nPDFs and ?br, regardless of the nPDF parameter set and the assumed geometric dependence, can simultaneously describe the entire rapidity and centrality dependence of J/? modifications in d+Au collisions at sNN=200 GeV. We extend these calculations to incorporate initial-state parton energy loss, which results in an improved description of the experimental data. Finally, we compare the data with previously published calculations, including coherence effects, and find them unable to describe the full rapidity and centrality dependence.

J. L. Nagle; A. D. Frawley; L. A. Linden Levy; M. G. Wysocki

2011-10-28T23:59:59.000Z

500

Conditioning-specific reflex modification occurs when an unconditionedresponse(UR)ismodifiedinthe absence  

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not generalize from air puff to electro- dermal stimulation even though conditioning occurs to comparable levels can be obtained only at high air puff intensi- ties even though conditioning is supported by lower airConditioning-specific reflex modification occurs when an unconditionedresponse