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Office of Scientific & Technical Information Technical Reports
11,526
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12,020 Matching Results
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Blade reliability collaborative : collection of defect, damage and repair data.
The Blade Reliability Collaborative (BRC) was started by the Wind Energy Technologies Department of Sandia National Laboratories and DOE in 2010 with the goal of gaining insight into planned and unplanned O&M issues associated with wind turbine blades. A significant part of BRC is the Blade Defect, Damage and Repair Survey task, which will gather data from blade manufacturers, service companies, operators and prior studies to determine details about the largest sources of blade unreliability. This report summarizes the initial findings from this work.
Date:
April 1, 2013
Creator:
Ashwill, Thomas D.; Ogilvie, Alistair B. & Paquette, Joshua A.
Object Type:
Report
System:
The UNT Digital Library
Blade Testing Equipment Development and Commercialization: Cooperative Research and Development Final Report, CRADA Number CRD-09-346
Blade testing is required to meet wind turbine design standards, reduce machine cost, and reduce the technical and financial risk of deploying mass-produced wind turbine models. NREL?s National Wind Technology Center (NWTC) in Colorado is the only blade test facility in the U.S. capable of performing full-scale static and fatigue testing of multi-megawatt-scale wind turbine blades. Rapid growth in wind turbine size over the past two decades has outstripped the size capacity of the NWTC blade test facility leaving the U.S. wind industry without a suitable means of testing blades for large land-based and offshore turbines. This CRADA will develop and commercialize testing technologies and test equipment, including scaling up, value engineering, and testing of equipment to be used at blade testing facilities in the U.S. and around the world.
Date:
April 1, 2013
Creator:
Snowberg, D. & Hughes, S.
Object Type:
Report
System:
The UNT Digital Library
Boulder Wind Power Advanced Gearless Drivetrain: Cooperative Research and Development Final Report, CRADA Number CRD-12-00463
The Boulder Wind Power (BWP) Advanced Gearless Drivetrain Project explored the application of BWP's innovative, axial-gap, air-core, permanent-magnet direct-drive generator in offshore wind turbines. The objective of this CRADA is to assess the benefits that result from reduced towerhead mass of BWP's technology when used in 6 MW offshore turbines installed on a monopile or a floating spar foundation.
Date:
April 1, 2013
Creator:
Cotrell, J.
Object Type:
Report
System:
The UNT Digital Library
The Budget Control Act of 2011: The Effects on Spending and the Budget Deficit
This report discusses the effects of the Budget Control Act of 2011 (BCA) on spending and the deficit, assuming that the automatic spending reductions proceed as scheduled from FY2013 to FY2021 and the discretionary spending caps remain in place.
Date:
April 1, 2013
Creator:
Levit, Mindy R. & Labonte, Marc
Object Type:
Report
System:
The UNT Digital Library
Built Environment Energy Analysis Tool Overview
This presentation provides an overview of the Built Environment Energy Analysis Tool, which is designed to assess impacts of future land use/built environment patterns on transportation-related energy use and greenhouse gas (GHG) emissions. The tool can be used to evaluate a range of population distribution and urban design scenarios for 2030 and 2050. This tool was produced as part of the Transportation Energy Futures (TEF) project, a Department of Energy-sponsored multi-agency project initiated to pinpoint underexplored strategies for abating GHGs and reducing petroleum dependence related to transportation.
Date:
April 1, 2013
Creator:
Porter, C.
Object Type:
Presentation
System:
The UNT Digital Library
Catalysis for Mixed Alcohol Synthesis from Biomass Derived Syngas: Cooperative Research and Development Final Report, CRADA Number CRD-08-292
The Dow Chemical Company (Dow) developed and tested catalysts for production of mixed alcohols from synthesis gas (syngas), under research and development (R&D) projects that were discontinued a number of years ago. Dow possesses detailed laboratory notebooks, catalyst samples, and technical expertise related to this past work. The National Renewable Energy Laboratory (NREL) is conducting R&D in support of the United States Department of Energy (DOE) to develop methods for economically producing ethanol from gasified biomass. NREL is currently conducting biomass gasification research at an existing 1/2 ton/day thermochemical test platform. Both Dow and NREL believe that the ability to economically produce ethanol from biomass-derived syngas can be enhanced through collaborative testing, refinement, and development of Dow's mixed-alcohol catalysts at NREL's and/or Dow's bench- and pilot-scale facilities. Dow and NREL further agree that collaboration on improvements in catalysts as well as gasifier operating conditions (e.g., time, temperature, upstream gas treatment) will be necessary to achieve technical and economic goals for production of ethanol and other alcohols.
Date:
April 1, 2013
Creator:
Hensley, J.
Object Type:
Report
System:
The UNT Digital Library
Characterization of Detector-Grade CdTeSe Crystals
N/A
Date:
April 1, 2013
Creator:
Camarda, G.; Yang, G.; Bolotnikov, A. E.; Cui, Y.; Hossain, A.; Kim, K. H. et al.
Object Type:
Article
System:
The UNT Digital Library
Chemical Facility Security: Issues and Options for the 113th Congress
This report provides a brief overview of the existing statutory authority and implementing regulation. It describes several policy issues raised in previous debates regarding chemical facility security and identifies policy options for congressional consideration.
Date:
April 1, 2013
Creator:
Shea, Dana A.
Object Type:
Report
System:
The UNT Digital Library
Cleanable and Hardcoat Coatings for Increased Durability of Silvered Polymeric Mirrors
We have successfully developed coating formulations which significantly increasethe abrasion resistance of mirror films. We have demonstrated manufacturing scale-up of these films to full width andproduction volumes. Implementation of these films in commercial test sites is planned for Q2 2013(Abengoa, Gossamer Space Frames). This slide show outlines the background and objectives of the project, technical approach and results, and key lessons. It also presents the need and opportunity for reduction of costs for CSP and collectors. It also presents an approach for a large aperture parabolic trough collector with reflective film and a high concentration factor, including demonstration and results.
Date:
April 1, 2013
Creator:
Padiyath, Raghunath
Object Type:
Article
System:
The UNT Digital Library
CMS: Activities, Staffing, and Funding for the Center for Strategic Planning
Correspondence issued by the Government Accountability Office with an abstract that begins "CSP's activities, staff, and funding support strategic planning by individual CMS offices and centers as well as the agency itself. CMS officials told us that CSP assists individual offices and centers in developing strategic plans for their units, leads the agency's senior-level strategic planning meetings, and is helping to develop a centralized approach to monitor the implementation of CMS's agency-wide strategic plan. As of January 2013, CSP had 11 staff and it had $1.9 million in funds obligated for fiscal year 2012. Staff size and funding for CSP's most recent fiscal year represent a decrease compared to prior years, in part because CSP's activities have been narrowed in scope since the office was established in 2010, according to CMS officials. GAO provided a draft of this report to HHS for comment. After its review, HHS indicated that it did not have any comments."
Date:
April 1, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Cold Climate Foundation Retrofit Energy Savings: The Simulated Energy and Experimental Hygrothermal Performance of Cold Climate Foundation Wall Insulation Retrofit Measures -- Phase I, Energy Simulation
A split simulation whole building energy/3-dimensional earth contact model (termed the BUFETS/EnergyPlus Model or BEM) capable of modeling the full range of foundation systems found in the target retrofit housing stock has been extensively tested. These foundation systems that include abovegrade foundation walls, diabatic floors or slabs as well as lookout or walkout walls, currently cannot be modeled within BEopt.
Date:
April 1, 2013
Creator:
Goldberg, L. F. & Steigauf, B.
Object Type:
Report
System:
The UNT Digital Library
Collaboratives for Wildlife-Wind Turbine Interaction Research: Fostering Multistakeholder Involvement (Poster)
This poster highlights the various wildlife-wind collaboratives (specific to wildlife-wind turbine interaction research) that currently exist. Examples of collaboratives are included along with contact information, objectives, benefits, and ways to advance the knowledge base.
Date:
April 1, 2013
Creator:
Sinclair, K.
Object Type:
Article
System:
The UNT Digital Library
Combined Heat and Power: Enabling Resilient Energy Infrastructure for Critical Facilities
None
Date:
April 1, 2013
Creator:
Hampson, Anne
Object Type:
Report
System:
The UNT Digital Library
Comparison of the high temperature heat flux sensor to traditional heat flux gages under high heat flux conditions.
Four types of heat flux gages (Gardon, Schmidt-Boelter, Directional Flame Temperature, and High Temperature Heat Flux Sensor) were assessed and compared under flux conditions ranging between 100-1000 kW/m2, such as those seen in hydrocarbon fire or propellant fire conditions. Short duration step and pulse boundary conditions were imposed using a six-panel cylindrical array of high-temperature tungsten lamps. Overall, agreement between all gages was acceptable for the pulse tests and also for the step tests. However, repeated tests with the HTHFS with relatively long durations at temperatures approaching 1000%C2%B0C showed a substantial decrease (10-25%) in heat flux subsequent to the initial test, likely due to the mounting technique. New HTHFS gages have been ordered to allow additional tests to determine the cause of the flux reduction.
Date:
April 1, 2013
Creator:
Blanchat, Thomas K. & Hanks, Charles R.
Object Type:
Report
System:
The UNT Digital Library
Consequences of Fuel Failure on Criticality Safety of Used Nuclear Fuel
None
Date:
April 1, 2013
Creator:
Marshall, William BJ J & Wagner, John C
Object Type:
Report
System:
The UNT Digital Library
Cooperative Research Between NREL and Ampulse on III-V PV: Cooperative Research and Development Final Report, CRADA Number CRD-12-464
NREL and Ampulse will engage in cooperative research to develop III-V photovoltaics on alternative substrates.
Date:
April 1, 2013
Creator:
Ptak, A.
Object Type:
Report
System:
The UNT Digital Library
Corrective Action Decision Document/Closure Report for Corrective Action Unit 569: Area 3 Yucca Flat Atmospheric Test Sites Nevada National Security Site, Nevada with ROTC 1, Revision 0
This Corrective Action Decision Document/Closure Report presents information supporting the closure of Corrective Action Unit (CAU) 569: Area 3 Yucca Flat Atmospheric Test Sites, Nevada National Security Site, Nevada. CAU 569 comprises the following nine corrective action sites (CASs): • 03-23-09, T-3 Contamination Area • 03-23-10, T-3A Contamination Area • 03-23-11, T-3B Contamination Area • 03-23-12, T-3S Contamination Area • 03-23-13, T-3T Contamination Area • 03-23-14, T-3V Contamination Area • 03-23-15, S-3G Contamination Area • 03-23-16, S-3H Contamination Area • 03-23-21, Pike Contamination Area The purpose of this Corrective Action Decision Document/Closure Report is to provide justification and documentation supporting the recommendation that no further corrective action is needed for CAU 569 based on the implementation of the corrective actions listed in Table ES-2.
Date:
April 1, 2013
Creator:
Sloop, Christy
Object Type:
Report
System:
The UNT Digital Library
Correlation of Photoluminescence measurements with the spatial distribution of dislocations in CdZnTe Crystals
N/A
Date:
April 1, 2013
Creator:
G., Yang; Bolotnikov, A.E.; Cui, Y.; Camarda, G.S.; Hossain, A. & Utpal, R., James, R.B.
Object Type:
Article
System:
The UNT Digital Library
Creep-Fatigue Behavior of Alloy 617 at 850 and 950
Alloy 617 is the leading candidate material for an
Date:
April 1, 2013
Creator:
Carroll, L. & Carroll, M.
Object Type:
Report
System:
The UNT Digital Library
Cross-Flow Filtration of Multiple Algal Strains an
The objective of this task is to analytically asse
Date:
April 1, 2013
Creator:
Newby, Deborah T.
Object Type:
Report
System:
The UNT Digital Library
Cybersecurity: Authoritative Reports and Resources
This report provides links to selected authoritative resources related to cybersecurity issues and includes information related to cybersecurity topics.
Date:
April 1, 2013
Creator:
Tehan, Rita
Object Type:
Report
System:
The UNT Digital Library
Dark Matter in 3D
None
Date:
April 1, 2013
Creator:
Alves, Daniele S.M.; /Fermilab; Hedri, Sonia El; Wacker, Jay G. & /SLAC /Stanford U., ITP
Object Type:
Article
System:
The UNT Digital Library
Data Report: Meteorological and Evapotranspiration Data from Sagebrush and Pinyon Pine/Juniper Communities at Pahute Mesa, Nevada National Security Site, 2011-2012
Pahute Mesa is a groundwater recharge area at the Nevada National Security Site. Because underground nuclear testing was conducted at Pahute Mesa, groundwater recharge may transport radionuclides from underground test sites downward to the water table; the amount of groundwater recharge is also an important component of contaminant transport models. To estimate the amount of groundwater recharge at Pahute Mesa, an INFIL3.0 recharge-runoff model is being developed. Two eddy covariance (EC) stations were installed on Pahute Mesa to estimate evapotranspiration (ET) to support the groundwater recharge modeling project. This data report describes the methods that were used to estimate ET and collect meteorological data. Evapotranspiration was estimated for two predominant plant communities on Pahute Mesa; one site was located in a sagebrush plant community, the other site in a pinyon pine/juniper community. Annual ET was estimated to be 310±13.9 mm for the sagebrush site and 347±15.9 mm for the pinyon pine/juniper site (March 26, 2011 to March 26, 2012). Annual precipitation measured with unheated tipping bucket rain gauges was 179 mm at the sagebrush site and 159 mm at the pinyon pine/juniper site. Annual precipitation measured with bulk precipitation gauges was 222 mm at the sagebrush site and 227 mm …
Date:
April 1, 2013
Creator:
Jasoni, Richard L.; Larsen, Jessica D.; Lyles, Brad F.; Healey, John M.; Cooper, Clay A.; Hershey, Ronald L. et al.
Object Type:
Report
System:
The UNT Digital Library
Definition of a 5MW/61.5m wind turbine blade reference model.
A basic structural concept of the blade design that is associated with the frequently utilized %E2%80%9CNREL offshore 5-MW baseline wind turbine%E2%80%9D is needed for studies involving blade structural design and blade structural design tools. The blade structural design documented in this report represents a concept that meets basic design criteria set forth by IEC standards for the onshore turbine. The design documented in this report is not a fully vetted blade design which is ready for manufacture. The intent of the structural concept described by this report is to provide a good starting point for more detailed and targeted investigations such as blade design optimization, blade design tool verification, blade materials and structures investigations, and blade design standards evaluation. This report documents the information used to create the current model as well as the analyses used to verify that the blade structural performance meets reasonable blade design criteria.
Date:
April 1, 2013
Creator:
Resor, Brian Ray
Object Type:
Report
System:
The UNT Digital Library