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Design considerations for concentrating solar power tower systems employing molten salt.

Description: The Solar Two Project was a United States Department of Energy sponsored project operated from 1996 to 1999 to demonstrate the coupling of a solar power tower with a molten nitrate salt as a heat transfer media and for thermal storage. Over all, the Solar Two Project was very successful; however many operational challenges were encountered. In this work, the major problems encountered in operation of the Solar Two facility were evaluated and alternative technologies identified for use in a futu… more
Date: September 1, 2010
Creator: Moore, Robert Charles; Siegel, Nathan Phillip; Kolb, Gregory J.; Vernon, Milton E. & Ho, Clifford Kuofei
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Structural and electrochemical Investigation of Li(Ni0.4Co0.2-yAlyMn0.4)O2 Cathode Material

Description: Li(Ni{sub 0.4}Co{sub 0.15}Al{sub 0.05}Mn{sub 0.4})O{sub 2} was investigated to understand the effect of replacement of the cobalt by aluminum on the structural and electrochemical properties. In situ X-ray absorption spectroscopy (XAS) was performed, utilizing a novel in situ electrochemical cell, specifically designed for long-term X-ray experiments. The cell was cycled at a moderate rate through a typical Li-ion battery operating voltage range. (1.0-4.7 V) XAS measurements were performed at d… more
Date: June 14, 2010
Creator: Rumble, C.; Conry, T.E.; Doeff, Marca; Cairns, Elton J.; Penner-Hahn, James E. & Deb, Aniruddha
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Boron Nitride Capacitors for Advanced Power Electronic Devices

Description: This project fabricates long-life boron nitride/boron oxynitride thin film -based capacitors for advanced SiC power electronics with a broad operating temperature range using a physical vapor deposition (PVD) technique. The use of vapor deposition provides for precise control and quality material formation.
Date: November 1, 2010
Creator: Badi, N.; Starikov, D.; Boney, C.; Bensaoula, A. & Johnstone, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy storage for the electricity grid : benefits and market potential assessment guide : a study for the DOE Energy Storage Systems Program.

Description: This guide describes a high-level, technology-neutral framework for assessing potential benefits from and economic market potential for energy storage used for electric-utility-related applications. The overarching theme addressed is the concept of combining applications/benefits into attractive value propositions that include use of energy storage, possibly including distributed and/or modular systems. Other topics addressed include: high-level estimates of application-specific lifecycle benef… more
Date: February 1, 2010
Creator: Eyer, James M. & Corey, Garth P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced Soldier Thermoelectric Power System for Power Generation from Battlefield Heat Sources

Description: The U.S. military uses large amounts of fuel during deployments and battlefield operations. This project sought to develop a lightweight, small form-factor, soldier-portable advanced thermoelectric (TE) system prototype to recover and convert waste heat from various deployed military equipment (i.e., diesel generators/engines, incinerators, vehicles, and potentially mobile kitchens), with the ultimate purpose of producing power for soldier battery charging, advanced capacitor charging, and othe… more
Date: September 1, 2010
Creator: Hendricks, Terry J.; Hogan, Tim; Case, Eldon D. & Cauchy, Charles J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Role of Energy Storage in Commercial Building

Description: Motivation and Background of Study This project was motivated by the need to understand the full value of energy storage (thermal and electric energy storage) in commercial buildings, the opportunity of benefits for building operations and the potential interactions between a building and a smart grid infrastructure. On-site or local energy storage systems are not new to the commercial building sector; they have been in place in US buildings for decades. Most building-scale storage technologies… more
Date: September 30, 2010
Creator: Kintner-Meyer, Michael CW; Subbarao, Krishnappa; Prakash Kumar, Nirupama; Bandyopadhyay, Gopal K.; Finley, C.; Koritarov, V. S. et al.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
open access

A review of battery life-cycle analysis : state of knowledge and critical needs.

Description: A literature review and evaluation has been conducted on cradle-to-gate life-cycle inventory studies of lead-acid, nickel-cadmium, nickel-metal hydride, sodium-sulfur, and lithium-ion battery technologies. Data were sought that represent the production of battery constituent materials and battery manufacture and assembly. Life-cycle production data for many battery materials are available and usable, though some need updating. For the remaining battery materials, lifecycle data either are nonex… more
Date: December 22, 2010
Creator: Sullivan, J. L.; Gaines, L. & Systems, Energy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modular Energy Storage System for Hydrogen Fuel Cell Vehicles

Description: The objective of the project is to develop technologies, specifically power electronics, energy storage electronics and controls that provide efficient and effective energy management between electrically powered devices in alternative energy vehicles – plug-in electric vehicles, hybrid vehicles, range extended vehicles, and hydrogen-based fuel cell vehicles. The in-depth research into the complex interactions between the lower and higher voltage systems from data obtained via modeling, bench… more
Date: May 31, 2010
Creator: Thomas, Janice
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Carbide-Derived Carbons with Tunable Porosity Optimized for Hydrogen Storage

Description: On-board hydrogen storage is a key requirement for fuel cell-powered cars and trucks. Porous carbon-based materials can in principle adsorb more hydrogen per unit weight at room temperature than liquid hydrogen at -176 oC. Achieving this goal requires interconnected pores with very high internal surface area, and binding energies between hydrogen and carbon significantly enhanced relative to H2 on graphite. In this project a systematic study of carbide-derived carbons, a novel form of porous ca… more
Date: January 7, 2010
Creator: Fisher, John E.; Gogotsi, Yury & Yildirim, Taner
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Role of Energy Storage with Renewable Electricity Generation

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 … more
Date: January 1, 2010
Creator: Denholm, P.; Ela, E.; Kirby, B. & Milligan, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Analysis of Hydrogen and Competing Technologies for Utility-Scale Energy Storage

Description: Presentation about the National Renewable Energy Laboratory's analysis of hydrogen energy storage scenarios, including analysis framework, levelized cost comparison of hydrogen and competing technologies, analysis results, and conclusions drawn from the analysis.
Date: February 11, 2010
Creator: Steward, D.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
open access

Characterizing Hydrogen Storage Media: Understanding the Interior Pore Structure of a Cu3BTC2 Metal-Organic Framework Infiltrated with NaAlH4

Description: Preliminary results support the nano-confinement of sodium alanate within the pores of a Cu{sub 3}BTC{sub 2} MOF substrate. Increased {sup 1}H and {sup 27}Al NMR T{sub 1} relaxation rates indicate a close proximity of infiltrated sodium alante to the paramagnetic Cu{sup 2+} ions on the BTC paddlewheel units. This is in support of the theory that an interaction due to the electronegative framework with the sodium alanate facilitates thermodynamically-favorable hydrogen adsorption and desorption.… more
Date: April 15, 2010
Creator: Kirmiz, A; Bhakta, R K; Allendorf, M D; Majzoub, E H; Behrens, R & Herberg, J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Value of Concentrating Solar Power and Thermal Energy Storage

Description: This paper examines the value of concentrating solar power (CSP) and thermal energy storage (TES) in four regions in the southwestern United States. Our analysis shows that TES can increase the value of CSP by allowing more thermal energy from a CSP plant?s solar field to be used, by allowing a CSP plant to accommodate a larger solar field, and by allowing CSP generation to be shifted to hours with higher energy prices. We analyze the sensitivity of CSP value to a number of factors, including t… more
Date: February 1, 2010
Creator: Sioshansi, R. & Denholm, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

21st Century Locomotive Technology: Quarterly Technical Status Report 28

Description: Thermal testing of a subscale locomotive sodium battery module was initiated.to validate thermal models. The hybrid trip optimizer problem was formulated. As outcomes of this project, GE has proceeded to commercialize trip optimizer technology, and has initiated work on a state-of-the-art battery manufacturing plant for high energy density, sodium-based batteries.
Date: February 19, 2010
Creator: Salasoo, Lembit & Chandra, Ramu
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

AGEING PROCEDURES ON LITHIUM BATTERIES IN AN INTERNATIONAL COLLABORATION CONTEXT

Description: The widespread introduction of electrically-propelled vehicles is currently part of many political strategies and introduction plans. These new vehicles, ranging from limited (mild) hybrid to plug-in hybrid to fully-battery powered, will rely on a new class of advanced storage batteries, such as those based on lithium, to meet different technical and economical targets. The testing of these batteries to determine the performance and life in the various applications is a time-consuming and costl… more
Date: November 1, 2010
Creator: Belt, Jeffrey R.; Bloom, Ira; Conte, Mario; Conte, Fiorentino Valerio; Morita, Kenji; Ikeya, Tomohiko et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

Battery Ownership Model: A Tool for Evaluating the Economics of Electrified Vehicles and Related Infrastructure

Description: This presentation uses a vehicle simulator and economics model called the Battery Ownership Model to examine the levelized cost per mile of conventional (CV) and hybrid electric vehicles (HEVs) in comparison with the cost to operate an electric vehicle (EV) under a service provider business model. The service provider is assumed to provide EV infrastructure such as charge points and swap stations to allow an EV with a 100-mile range to operate with driving profiles equivalent to CVs and HEVs. B… more
Date: November 1, 2010
Creator: O'Keefe, M.; Brooker, A.; Johnson, C.; Mendelsohn, M.; Neubauer, J. & Pesaran, A.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
open access

The Wide-area Energy Management System Phase 2 Final Report

Description: The higher penetration of intermittent generation resources (including wind and solar generation) in the Bonneville Power Administration (BPA) and California Independent System Operator (CAISO) balancing authorities (BAs) raises issue of requiring expensive additional fast grid balancing services in response to additional intermittency and fast up and down power ramps in the electric supply system. The overall goal of the wide-area energy management system (WAEMS) project is to develop the prin… more
Date: August 31, 2010
Creator: Lu, Ning; Makarov, Yuri V. & Weimar, Mark R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

3D Thermal and Electrochemical Model for Spirally Wound Large Format Lithium-ion Batteries

Description: In many commercial cells, long tabs at both cell sides, leading to uniform potentials along the spiral direction of wound jelly rolls, are rarely seen because of their high manufacturing cost. More often, several metal strips are welded at discrete locations along both current collector foils. With this design, the difference of electrical potentials is easily built up along current collectors in the spiral direction. Hence, the design features of the tabs, such as number, location and size, ca… more
Date: October 14, 2010
Creator: Lee, K. J.; Kim, G. H. & Smith, K.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
open access

Theoretical and Experimental Thermal Performance Analysis of Complex Thermal Storage Membrane Containing Bio-Based Phase Change Material (PCM)

Description: Since 2000, an ORNL research team has been testing different configurations of PCM-enhanced building envelop components to be used in residential and commercial buildings. During 2009, a novel type of thermal storage membrane was evaluated for building envelope applications. Bio-based PCM was encapsulated between two layers of heavy-duty plastic film forming a complex array of small PCM cells. Today, a large group of PCM products are packaged in such complex PCM containers or foils containing a… more
Date: December 1, 2010
Creator: Kosny, Jan; Stovall, Therese K; Shrestha, Som S & Yarbrough, David W
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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