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

Description: 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 perio… more
Date: April 1, 2013
Creator: Denholm, P.; Wan, Y. H.; Hummon, M. & Mehos, M.
Partner: UNT Libraries Government Documents Department

Built Environment Energy Analysis Tool Overview

Description: 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 initiat… more
Date: April 1, 2013
Creator: Porter, C.
Partner: UNT Libraries Government Documents Department

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

Description: 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 explo… more
Date: April 1, 2013
Creator: Jenne, S.; Young, K. R. & Thorsteinsson, H.
Partner: UNT Libraries Government Documents Department

First JAM results on the determination of polarized parton distributions

Description: 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… more
Date: April 1, 2013
Creator: Jimenez-Delgado, Pedro
Partner: UNT Libraries Government Documents Department

Renewable Electricity Futures

Description: This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.
Date: April 1, 2013
Creator: Mai, Trieu
Partner: UNT Libraries Government Documents Department

Renewable Electricity Futures: Exploration of Up to 80% Renewable Electricity Penetration in the United States

Description: This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.
Date: April 1, 2013
Creator: Hand, M. Maureen; DeMeo, E.; Hostick, D.; Mai, Trieu & Schlosser, C. A.
Partner: UNT Libraries Government Documents Department

Using Machine Learning to Create Turbine Performance Models

Description: Wind turbine power output is known to be a strong function of wind speed, but is also affected by turbulence and shear. In this work, new aerostructural simulations of a generic 1.5 MW turbine are used to explore atmospheric influences on power output. Most significant is the hub height wind speed, followed by hub height turbulence intensity and then wind speed shear across the rotor disk. These simulation data are used to train regression trees that predict the turbine response for any combina… more
Date: April 1, 2013
Creator: Clifton, A.
Partner: UNT Libraries Government Documents Department

Estimate of Geothermal Energy Resource in Major U.S. Sedimentary Basins

Description: This study estimates the magnitude of geothermal energy from fifteen major known US sedimentary basins and ranks these basins relative to their potential. Because most sedimentary basins have been explored for oil and gas, well logs, temperatures at depth, and reservoir properties are known. This reduces exploration risk and allows development of geologic exploration models for each basin as well as a relative assessment of geologic risk elements for each play. The total available thermal resou… more
Date: April 1, 2012
Creator: Porro, C. & Augustine, C.
Partner: UNT Libraries Government Documents Department

Gearbox Reliability Collaborative Update

Description: Understand and isolate sources of gearbox failures; Improve understanding of internal loads and response; Normal operation and transients; Improve analysis tools to accurately simulate response; Improve ability to reproduce field response in dyno testing; Evaluate how CM augments design and O and M.
Date: April 1, 2012
Creator: Keller, J.; McDade, M.; LaCava, W.; Guo, Y. & Sheng, S.
Partner: UNT Libraries Government Documents Department

Recoverable Resource Estimate of Identified Onshore Geopressured Geothermal Energy in Texas and Louisiana

Description: Geopressured geothermal reservoirs are characterized by high temperatures and high pressures with correspondingly large quantities of dissolved methane. Due to these characteristics, the reservoirs provide two sources of energy: chemical energy from the recovered methane, and thermal energy from the recovered fluid at temperatures high enough to operate a binary power plant for electricity production. Formations with the greatest potential for recoverable energy are located in the gulf coastal … more
Date: April 1, 2012
Creator: Esposito, A. & Augustine, C.
Partner: UNT Libraries Government Documents Department

Active Power Control from Wind Power

Description: 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.
Partner: UNT Libraries Government Documents Department

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

Description: 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.
Partner: UNT Libraries Government Documents Department

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

Description: 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 applic… more
Date: April 1, 2011
Creator: Kempe, M.; Dameron, A. & Reese, M.
Partner: UNT Libraries Government Documents Department

Choices and Requirements of Batteries for EVs, HEVs, PHEVs

Description: This presentation describes the choices available and requirements for batteries for electric vehicles, hybrid electric vehicles, plug-in hybrid electric vehicles.
Date: April 1, 2011
Creator: Pesaran, A. A.
Partner: UNT Libraries Government Documents Department

Solar Data Hub

Description: As power grid integration of renewables becomes ever more important and detailed, the need for a centralized place for solar-related resource data is needed. This presentation describes such a place and website.
Date: April 1, 2011
Creator: Orwig, K.
Partner: UNT Libraries Government Documents Department

UWIG Forecasting Workshop -- Albany

Description: This presentation describes the importance of good forecasting for variable generation, the different approaches used by industry, and the importance of validated high-quality data.
Date: April 1, 2011
Creator: Lew, D.
Partner: UNT Libraries Government Documents Department

Computer-Aided Optimization of Macroscopic Design Factors for Lithium-Ion Cell Performance and Life

Description: Electric-drive vehicles enabled by power- and energy-dense batteries promise to improve vehicle efficiency and help reduce society's dependence on fossil fuels. Next generation plug-in hybrid vehicles and battery electric vehicles may also enable vehicles to be powered by electricity generated from clean, renewable resources; however, to increase the commercial viability of such vehicles, the cost, performance and life of the vehicles batteries must be further improved. This work illustrates a … more
Date: April 1, 2010
Creator: Smith, K.; Kim, G. H. & Pesaran, A.
Partner: UNT Libraries Government Documents Department

Ultracapacitor Applications and Evaluation for Hybrid Electric Vehicles

Description: Describes the use of ultracapacitors in advanced hybrid and electric vehicles and discusses thermal and electrical testing of lithium ion capacitors for HEV applications.
Date: April 1, 2009
Creator: Pesaran, A.; Gonder, J. & Keyser, M.
Partner: UNT Libraries Government Documents Department

2008 Solar Annual Review Meeting, Session: Parabolic Troughs

Description: The project description is R and D activities at NREL and Sandia aimed at lowering the delivered energy cost of parabolic trough collector systems and FOA awards to support industry in trought development. The primary objectives are: (1) support development of near-term parabolic trought technology for central station power generation; (2) support development of next-generation trought fields; and (3) support expansion of US trough industry. The major FY08 activities were: (1) improving reflect… more
Date: April 1, 2008
Creator: Kutscher, Chuck
Partner: UNT Libraries Government Documents Department
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