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Open Access to UNT Faculty's Scholarly Publications

Description: This presentation discusses open access policies at the University of North Texas (UNT). The topics include an introduction to open access, a discussion of open access policies, and implementation ideas for workflow and technology support.
Date: March 25, 2010
Creator: Halbert, Martin; Moen, William E. & Hartman, Cathy Nelson
Partner: UNT Libraries

Distributed Bio-Oil Reforming

Description: 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.
Partner: UNT Libraries Government Documents Department

Controlled Hydrogen Fleet and Infrastructure Analysis

Description: 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.
Partner: UNT Libraries Government Documents Department

Research Opportunities in Reliability of Photovoltaic Modules

Description: 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.
Partner: UNT Libraries Government Documents Department

Thermal Management of Power Semiconductor Packages - Matching Cooling Technologies with Packaging Technologies

Description: 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.
Partner: UNT Libraries Government Documents Department

Practical Issues when Selecting PV Technologies

Description: 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.
Partner: UNT Libraries Government Documents Department

E85 Quality Specifications and Market Surveys

Description: Presentation about ethanol, specifications for E85, and market surveys of fuel quality.
Date: April 20, 2010
Creator: Alleman, T. L.
Partner: UNT Libraries Government Documents Department

Macro-System Model Project #AN011

Description: A review of the Macro-System Model for hydrogen production pathways analysis, including objectives, accomplishments, collaborations, and future work. Presented at the 2010 U.S. Department of Energy Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010, in Washington, DC.
Date: June 8, 2010
Creator: Ruth, M. F.; Diakov, V.; Sa, T. J. & Goldsby, M.
Partner: UNT Libraries Government Documents Department

Data Analysis for ARRA Early Fuel Cell Market Demonstrations

Description: 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.
Partner: UNT Libraries Government Documents Department

Wind Power Answer In Times of Water Scarcity

Description: 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.
Partner: UNT Libraries Government Documents Department

Secondary Use of PHEV and EV Batteries: Opportunities & Challenges

Description: NREL and partners will investigate the reuse of retired lithium ion batteries for plug-in hybrid, hybrid, and electric vehicles in order to reduce vehicle costs and emissions and curb our dependence on foreign oil. A workshop to solicit industry feedback on the process is planned. Analyses will be conducted, and aged batteries will be tested in two or three suitable second-use applications. The project is considering whether retired PHEV/EV batteries have value for other applications; if so, what are the barriers and how can they be overcome?
Date: May 1, 2010
Creator: Neubauer, J.; Pesaran, A. & Howell, D.
Partner: UNT Libraries Government Documents Department

HVAC Loads in High-Performance Homes

Description: This presentation was delivered at the ASHRAE 2010 Annual Summer Conference on June 27, 2010, and addresses humidity and AC loads in energy efficient houses.
Date: June 27, 2010
Creator: Christensen, D.; Fang, X. & Winkler, J.
Partner: UNT Libraries Government Documents Department

Hydrogen for Energy Storage Analysis Overview

Description: Overview of hydrogen for energy storage analysis presented at the National Hydrogen Association Conference & Expo, May 3-6, 2010, Long Beach, CA.
Date: June 1, 2010
Creator: Steward, D. M.; Ramsden, T. & Harrison, K.
Partner: UNT Libraries Government Documents Department

Computer-Aided Engineering and Secondary Use of Automotive Batteries

Description: NREL and partners will investigate the reuse of retired lithium ion batteries for plug-in hybrid, hybrid, and electric vehicles in order to reduce vehicle costs and emissions and curb our dependence on foreign oil. A workshop to solicit industry feedback on the process is planned. Analyses will be conducted, and aged batteries will be tested in two or three suitable second-use applications. The project is considering whether retired PHEV/EV batteries have value for other applications; if so, what are the barriers and how can they be overcome?
Date: May 1, 2010
Creator: Pesaran, A.; Kim, G. H.; Smith, K. & Newbauer, J.
Partner: UNT Libraries Government Documents Department

Power Electronics Thermal Control

Description: Thermal management plays an important part in the cost of electric drives in terms of power electronics packaging. Very promising results have been obtained by using microporous coatings and skived surfaces in conjunction with single-phase and two-phase flows. Sintered materials and thermoplastics with embedded fibers show significant promise as thermal interface materials, or TIMs. Appropriate cooling technologies depend on the power electronics package application and reliability.
Date: May 5, 2010
Creator: Narumanchi, S.
Partner: UNT Libraries Government Documents Department

Hybrid Vehicle Comparison Testing Using Ultracapacitor vs. Battery Energy Storage

Description: 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.
Partner: UNT Libraries Government Documents Department

Hydrogen Production: Fundamentals and Case Study Summaries

Description: 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.
Partner: UNT Libraries Government Documents Department

PV Technology for Today and Tomorrow

Description: 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.
Partner: UNT Libraries Government Documents Department

Role of Energy Storage with Renewable Electricity Generation (Report Summary)

Description: 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.
Partner: UNT Libraries Government Documents Department
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