Parabolic Trough Power for the California Competitive Market (Presentation)

This presentation includes discusses the restructuring of the California power market and the resulting impacts.
Date: April 1, 2001
Creator: Price, H. & Cable, B.
System: The UNT Digital Library

NREL North American Solar Radiation Atlas

This presentation is about NREL's North American Solar Radiation Atlas, which currently includes 48 states (Alaska and Hawaii to be added in the future). It discusses the goals of the Atlas which are to: deliver basic solar performance estimates to general users, deliver a wide variety of additional information to more advanced users, be easy to use, full featured, and extensible.
Date: April 1, 2001
Creator: George, Ray & Gray-Hann, Pamela
System: The UNT Digital Library

First JAM results on the determination of polarized parton distributions

The Jefferson Lab Angular Momentum (JAM) collaboration is a new initiative aimed to the study of the angular-momentum-dependent structure of the nucleon. First results on the determination of spin-dependent parton distribution functions from world data on polarized deep-inelastic scattering will be presented and compared with previous determinations from other groups. Different aspects of global QCD analysis will be discussed, including effects due to nuclear structure, higher twist, and target-mass corrections, as well as the impact of different data selections.
Date: April 1, 2013
Creator: Jimenez-Delgado, Pedro
System: The UNT Digital Library

Evaluation of a Lower-Energy Energy Storage System (LEESS) for Full-Hybrid Electric Vehicles (HEVs)

This presentation discusses the evaluation of a lower-energy energy storage system for full-hybrid electric vehicles.
Date: April 1, 2013
Creator: Gonder, J.; Ireland, J. & Cosgrove, J.
System: The UNT Digital Library

Active Power Control from Wind Power

In order to keep the electricity grid stable and the lights on, the power system relies on certain responses from its generating fleet. This presentation evaluates the potential for wind turbines and wind power plants to provide these services and assist the grid during critical times.
Date: April 1, 2011
Creator: Ela, E. & Brooks, D.
System: The UNT Digital Library

An Analysis of Concentrating Solar Power with Thermal Energy Storage in a California 33% Renewable Scenario (Report Summary)

This analysis evaluates CSP with TES in a scenario where California derives 33% of its electricity from renewable energy sources. It uses a commercial grid simulation tool to examine the avoided operational and capacity costs associated with CSP and compares this value to PV and a baseload generation with constant output. Overall, the analysis demonstrates several properties of dispatchable CSP, including the flexibility to generate during periods of high value and avoid generation during periods of lower value. Of note in this analysis is the fact that significant amount of operational value is derived from the provision of reserves in the case where CSP is allowed to provide these services. This analysis also indicates that the 'optimal' configuration of CSP could vary as a function of renewable penetration, and each configuration will need to be evaluated in terms of its ability to provide dispatchable energy, reserves, and firm capacity. The model can be used to investigate additional scenarios involving alternative technology options and generation mixes, applying these scenarios within California or in other regions of interest.
Date: April 1, 2013
Creator: Denholm, P.; Wan, Y. H.; Hummon, M. & Mehos, M.
System: The UNT Digital Library

Development of Metric for Measuring the Impact of RD&D Funding on GTO's Geothermal Exploration Goals

The Department of Energy's Geothermal Technologies Office (GTO) provides RD&D funding for geothermal exploration technologies with the goal of lowering the risks and costs of geothermal development and exploration. In 2012, NREL was tasked with developing a metric to measure the impacts of this RD&D funding on the cost and time required for exploration activities. The development of this metric included collecting cost and time data for exploration techniques, creating a baseline suite of exploration techniques to which future exploration and cost and time improvements could be compared, and developing an online tool for graphically showing potential project impacts (all available at <a href="http://en.openei.org/wiki/Gateway:Geothermal">http://en.openei.org/wiki/Gateway:Geothermal</a>). The conference paper describes the methodology used to define the baseline exploration suite of techniques (baseline), as well as the approach that was used to create the cost and time data set that populates the baseline. The resulting product, an online tool for measuring impact, and the aggregated cost and time data are available on the Open EI website for public access (<a href="http://en.openei.org">http://en.openei.org</a>).
Date: April 1, 2013
Creator: Jenne, S.; Young, K. R. & Thorsteinsson, H.
System: The UNT Digital Library

Alternative Fuels and Advanced Vehicles: Resources for Fleet Managers (Clean Cities)

A discussion of the tools and resources on the Clean Cities, Alternative Fuels and Advanced Vehicles Data Center, and the FuelEconomy.gov Web sites that can help vehicle fleet managers make informed decisions about implementing strategies to reduce gasoline and diesel fuel use.
Date: April 1, 2011
Creator: Brennan, A.
System: The UNT Digital Library

Calcium Film Based Testing of Edge-Seal Materials for Photovoltaic Applications

Because of the sensitivity of some photovoltaic devices to moisture-induced corrosion, they are packaged using impermeable front- and back-sheets with an edge seal to prevent moisture ingress. Evaluation of edge seal materials can be difficult because of the low permeation rates involved and/or non-Fickian behavior. Here, using a Ca film deposited on a glass substrate, we demonstrate the evaluation of edge seal materials in a manner that effectively duplicates their use in a photovoltaic application and compare the results with standard methods for measuring water vapor transport. We demonstrate how moisture permeation data from polymer films can be used to estimate moisture ingress rates and compare the results of these two methods. Encapsulant materials were also evaluated for comparison and to highlight the need for edge seals. Of the materials studied, dessicant-filled polyisobutene materials demonstrate by far the best potential to keep moisture out for a 20 to 30 year lifetime.
Date: April 1, 2011
Creator: Kempe, M.; Dameron, A. & Reese, M.
System: The UNT Digital Library

SIERRA Thermal/Fluid/Aero Code Development Activities.

None
Date: April 1, 2010
Creator: Hassan, Basil
System: The UNT Digital Library

Hydrogen Technology Validation as a "Learning Demonstration" that Feeds the R&D Process (Presentation)

This presentation, which provides information about how hydrogen technology validation is used as a learning demonstration that feeds the research and development process, was given at a National Hydrogen Association meeting in April 2004.
Date: April 1, 2004
Creator: Wipke, K.; Gronich, S. & Hooker, D.
System: The UNT Digital Library

Progress Toward Roll Processing of Solar Reflective Material

This presentation discusses the goal of this project which was to demonstrate that it is possible to cost-effectively produce high performance solar reflective material using vacuum deposition techniques.
Date: April 1, 2001
Creator: Smilgys, R.; Wallace, S. & Kennedy, C.
System: The UNT Digital Library