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Solid State Neutron Detector - A Review of Status
None
Date:
April 19, 2010
Creator:
Mukhopadhyay, Sanjoy
System:
The UNT Digital Library
Renewable Resources for Hydrogen
This presentation provides an overview of renewable resources for hydrogen. It was presented at the National Hydrogen Association Hydrogen Conference & Expo in Long Beach, CA, May 3-6, 2010.
Date:
May 3, 2010
Creator:
Jalalzadeh-Azar, A. A.
System:
The UNT Digital Library
Business Case for CNG in Municipal Fleets
Presentation about compressed natural gas in municipal fleets, assessing investment profitability, the VICE model, base-case scenarios, and pressing questions for fleet owners.
Date:
July 27, 2010
Creator:
Johnson, C.
System:
The UNT Digital Library
Hydrogen Production: Fundamentals and Case Study Summaries
This presentation summarizes hydrogen production fundamentals and case studies, including hydrogen to wind case studies.
Date:
May 19, 2010
Creator:
Harrison, K.; Remick, R.; Hoskin, A. & Martin, G.
System:
The UNT Digital Library
Wind Power Answer In Times of Water Scarcity
Strategic energy planning is paramount during times of dramatic population growth, global warming, increasing energy demands, and concerns over energy security, food security, and economic development. Recent concerns over water scarcity have moved the energy-water issue to the forefront of energy options discussions. This presentation describes the current water challenges in the United States and presents a case for wind energy as one way to mitigate the problem of water scarcity in several U.S. regions while providing a clean and sustainable economic future for America.
Date:
May 25, 2010
Creator:
Flowers, L. & Reategui, S.
System:
The UNT Digital Library
Blade Testing at NREL's National Wind Technology Center (NWTC)
Presentation of Blade Testing at NREL's National Wind Technology Center for the 2010 Sandia National Laboratories Blade Testing Workshop.
Date:
July 20, 2010
Creator:
Hughes, S.
System:
The UNT Digital Library
Gearbox Reliability Collaborative Experimental Data Overview & Analysis
This presentation details how wind turbine gearboxes fail to meet 20-year design life and how the Gearbox Reliability Collaborative (GRC) is addressing the challenges.
Date:
May 1, 2010
Creator:
Oyague, F.
System:
The UNT Digital Library
Fuel Cell Power Model for CHP and CHHP Economics and Performance Analysis
This presentation describes the fuel cell power model for CHP and CHHP economics and performance analysis.
Date:
March 30, 2010
Creator:
Steward, D. & Penev, M.
System:
The UNT Digital Library
Role of Energy Storage with Renewable Electricity Generation (Report Summary)
Renewable energy sources, such as wind and solar, have vast potential to reduce dependence on fossil fuels and greenhouse gas emissions in the electric sector. Climate change concerns, state initiatives including renewable portfolio standards, and consumer efforts are resulting in increased deployments of both technologies. Both solar photovoltaics (PV) and wind energy have variable and uncertain (sometimes referred to as "intermittent") output, which are unlike the dispatchable sources used for the majority of electricity generation in the United States. The variability of these sources has led to concerns regarding the reliability of an electric grid that derives a large fraction of its energy from these sources as well as the cost of reliably integrating large amounts of variable generation into the electric grid. In this report, we explore the role of energy storage in the electricity grid, focusing on the effects of large-scale deployment of variable renewable sources (primarily wind and solar energy).
Date:
March 1, 2010
Creator:
Denholm, P.; Ela, E.; Kirby, B. & Milligan, M.
System:
The UNT Digital Library
PV Technology for Today and Tomorrow
The presentation was given as a webinar to the Solar Instructor Training Network on August 13, 2010. It summarizes the three primary types of photovoltaic technologies, why the three approaches are useful and some advantages and disadvantages of each approach. At the end is an answer to a question that was asked.
Date:
August 13, 2010
Creator:
Kurtz, S.
System:
The UNT Digital Library
Distributed Bio-Oil Reforming
A review of NREL's FY10 work on hydrogen production via distributed bio-oil reforming.
Date:
June 1, 2010
Creator:
Czernik, S.; French, R. & Penev, M. M.
System:
The UNT Digital Library
Junction Evolution During Fabrication of CdS/CdTe Thin-film PV Solar Cells
Discussion of the formation of CdTe thin-film PV junctions and optimization of CdTe thin-film PV solar cells.
Date:
September 1, 2010
Creator:
Gessert, T. A.
System:
The UNT Digital Library
Thermal Management of Power Semiconductor Packages - Matching Cooling Technologies with Packaging Technologies
Heat removal for power semiconductor devices is critical for robust operation. Because there are different packaging options, different thermal management technologies, and a range of applications, there is a need for a methodology to match cooling technologies and package configurations to target applications. To meet this need, a methodology was developed to compare the sensitivity of cooling technologies on the overall package thermal performance over a range of power semiconductor packaging configurations. The results provide insight into the trade-offs associated with cooling technologies and package configurations. The approach provides a method for comparing new developments in power semiconductor packages and identifying potential thermal control technologies for the package. The results can help users select the appropriate combination of packaging configuration and cooling technology for the desired application.
Date:
April 27, 2010
Creator:
Bennion, K. & Moreno, G.
System:
The UNT Digital Library
Hybrid Vehicle Comparison Testing Using Ultracapacitor vs. Battery Energy Storage
With support from General Motors, NREL researchers converted and tested a hybrid electric vehicle (HEV) with three energy storage configurations: a nickel metal-hydride battery and two ultracapacitor (Ucap) modules. They found that the HEV equipped with one Ucap module performed as well as or better than the HEV with a stock NiMH battery configuration. Thus, Ucaps could increase the market penetration and fuel savings of HEVs.
Date:
February 1, 2010
Creator:
Gonder, J.; Pesaran, A.; Lustbader, J. & Tataria, H.
System:
The UNT Digital Library
Controlled Hydrogen Fleet and Infrastructure Analysis
This presentation summarizes controlled hydrogen fleet & infrastructure analysis undertaken for the DOE Fuel Cell Technologies Program.
Date:
June 10, 2010
Creator:
Wipke, K.; Sprik, S.; Kurtz, J. & Ramsden, T.
System:
The UNT Digital Library
Research Opportunities in Reliability of Photovoltaic Modules
The motivation for an increased scope and a more proactive effort in reliability research of photovoltaic modules and systems includes reducing the levelized cost of energy and gaining better confidence in the energy and financial payback for photovoltaic systems. This increased reliability and confidence will lead to greater penetration of photovoltaics in the energy portfolio and greater employment in photovoltaics and related industries. Present research needs include the fundamental degradation mechanisms of polymers, connectors and other module components, mapping of failure mechanisms observed in the field to those in accelerated lifetime tests, determining the acceleration factors, and improving standards for modules such that tests can appropriately be assigned to evaluate their long term durability. Specific mechanisms discussed are corrosion in module components, metastability in thin-film active layers, delamination and loss of elastic properties in module polymeric materials, and inverter failure. Presently, there is hiring of reliability scientists and engineers at many levels of the value chain for photovoltaics.
Date:
May 1, 2010
Creator:
Hacke, P.
System:
The UNT Digital Library
Session TA.5 - Demonstration Projects, Costs, and Market Introduction: Review Lecture
Summary of hydrogen and fuel cell demonstration projects, costs and market introduction.
Date:
May 19, 2010
Creator:
Wipke, K.; Ramsden, T.; Sprik, S. & Kurtz, J.
System:
The UNT Digital Library
Field Test of a DHW Distribution System: Temperature and Flow Analyses
This presentation discusses a field test of a DHW distribution system in an occupied townhome. It includes measured fixture flows and temperatures, a tested recirculation system, evaluated disaggregation of flow by measured temperatures, Aquacraft Trace Wizard analysis, and comparison.
Date:
May 13, 2010
Creator:
Barley, C. D.; Hendron, B. & Magnusson, L.
System:
The UNT Digital Library
Engineering Challenges of Airborne Wind Technology
This presentation addresses the engineering challenges of airborne wind technology.
Date:
September 28, 2010
Creator:
Felker, F.
System:
The UNT Digital Library
Uncertainty in Pyranometer and Pyrheliometer Calibrations Using GUM for NREL's ISO-17025 Accreditation Effort
2010 International Pyrheliometer Comparisons, IPC-XI Conference presentation titled: Uncertainty in Pyranometer and Pyrheliometer Calibrations Using GUM for NREL's ISO-17025 Accreditation Effort.
Date:
September 1, 2010
Creator:
Reda, I.; Myers, D. & Stoffel, T.
System:
The UNT Digital Library
Novel Approach to Advanced Direct Methanol Fuel Cell Anode Catalysts
This presentation is a summary of a Novel Approach to Advanced Direct Methanol Fuel Cell Anode Catalysts.
Date:
June 11, 2010
Creator:
Dinh, H. & Gennett, T.
System:
The UNT Digital Library
Data Analysis for ARRA Early Fuel Cell Market Demonstrations
Presentation about ARRA Early Fuel Cell Market Demonstrations, including an overview of the ARRE Fuel Cell Project, the National Renewable Energy Laboratory's data analysis objectives, deployment composite data products, and planned analyses.
Date:
May 1, 2010
Creator:
Kurtz, J.; Wipke, K.; Sprik, S. & Ramsden, T.
System:
The UNT Digital Library
Wind Turbine Manufacturers in the United States: Locations and Local Impacts
Suzanne Tegen's presentation about U.S. wind energy manufacturing (presented at WINDPOWER 2010 in Dallas) provides information about challenges to modeling renewables; wind energy's economic "ripple effect"; case studies about wind-related manufacturing in Colorado, Iowa, Ohio, and Indiana; manufacturing maps for the Great Lakes region, Arkansas, and the United States; sample job announcements; and U.S. Treasury Grant 1603 funding.
Date:
May 26, 2010
Creator:
Tegen, S.
System:
The UNT Digital Library
Practical Issues when Selecting PV Technologies
Presentation highlighting practical considerations for photovoltaic technologies and strategies for future reductions in cost and increases in efficiency.
Date:
September 9, 2010
Creator:
Kurtz, S.
System:
The UNT Digital Library