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Combined Effects of Gravity, Bending Moment, Bearing Clearance, and Input Torque on Wind Turbine Planetary Gear Load Sharing: Preprint

Description: This computational work investigates planetary gear load sharing of three-mount suspension wind turbine gearboxes. A three dimensional multibody dynamic model is established, including gravity, bending moments, fluctuating mesh stiffness, nonlinear tooth contact, and bearing clearance. A flexible main shaft, planetary carrier, housing, and gear shafts are modeled using reduced degrees-of-freedom through modal compensation. This drivetrain model is validated against the experimental data of Gear… more
Date: September 1, 2012
Creator: Guo, Y.; Keller, J. & LaCava, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

User s Guide for REFoffSpec Version 1.5.4

Description: This document is a user s guide for the IDL software REFoffSpec version 1.5.4 whose purpose is to aggregate for analysis NeXus data files from the magnetism and liquids reflectometer experiments at the Oak Ridge National Laboratory Spallation Neutron Source. The software is used to scale and align multiple data files that constitute a continuous set for an experimental run. The User s Guide for REFoffSepc explains step by step the process using a specific example run. Output screens are provide… more
Date: September 1, 2012
Creator: Ward, Richard C; Bilheux, Jean-Christophe; Lauter, Valeria & Ambaye, Haile Arena
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analyzing the Deployment of Large Amounts of Offshore Wind to Design an Offshore Transmission Grid in the United States: Preprint

Description: This paper revisits the results from the U.S. Department of Energy's '20% Wind Energy By 2030' study, which envisioned that 54 GW of offshore wind would be installed by said year. The analysis is conducted using the Regional Energy Deployment System (ReEDS), a capacity expansion model developed by the National Renewable Energy Laboratory. The model is used to optimize the deployment of the 54 GW of wind capacity along the coasts and lakes of the United States. The graphical representation of th… more
Date: September 1, 2012
Creator: Ibanez, E.; Mai, T. & Coles, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

Infrastructure Analysis Tools: A Focus on Cash Flow Analysis

Description: NREL has developed and maintains a variety of infrastructure analysis models for the U.S. Department of Energy. Business case analysis has recently been added to this tool set. This presentation focuses on cash flow analysis. Cash flows depend upon infrastructure costs, optimized spatially and temporally, and assumptions about financing and revenue. NREL has incorporated detailed metrics on financing and incentives into the models. Next steps in modeling include continuing to collect feedback o… more
Date: September 1, 2012
Creator: Melaina, M. & Penev, M.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
open access

Considerations for Possible Light Impact of Spent Nuclear Fuel for Safeguards Measurements

Description: This effort is designed to be a preliminary study to determine the appropriateness of lightly contacting SNF with zirconium-based cladding, in wet storage, for the purpose of taking safeguards measurements. Contact will likely consist of an initial impact followed by a light tensile load on the exterior surface of the SNF cladding. In the past, concerns have been raised that contacting SNF cladding could result in a loss of long-term mechanical integrity due to crack initiation, uncontrolled cr… more
Date: September 1, 2012
Creator: Castle, Brian K. & Ellis, Kelly D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Wind Power Forecasting Error Distributions: An International Comparison; Preprint

Description: Wind power forecasting is expected to be an important enabler for greater penetration of wind power into electricity systems. Because no wind forecasting system is perfect, a thorough understanding of the errors that do occur can be critical to system operation functions, such as the setting of operating reserve levels. This paper provides an international comparison of the distribution of wind power forecasting errors from operational systems, based on real forecast data. The paper concludes w… more
Date: September 1, 2012
Creator: Hodge, B. M.; Lew, D.; Milligan, M.; Holttinen, H.; Sillanpaa, S.; Gomez-Lazaro, E. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

RERTR-12 Insertion 2 Irradiation Summary Report

Description: The Reduced Enrichment for Research and Test Reactor (RERTR) experiment RERTR-12 was designed to provide comprehensive information on the performance of uranium-molybdenum (U-Mo) based monolithic fuels for research reactor applications.1 RERTR-12 insertion 2 includes the capsules irradiated during the last three irradiation cycles. These capsules include Z, Y1, Y2 and Y3 type capsules. The following report summarizes the life of the RERTR-12 insertion 2 experiment through end of irradiation, in… more
Date: September 1, 2012
Creator: Perez, D. M.; Chang, G. S.; Wachs, D. M.; Roth, G. A. & Woolstenhulme, N. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Expert Meeting Report: Key Innovations for Adding Energy Efficiency to Maintenance Projects

Description: This report describes an expert meeting hosted by the Building America research team NAHB Research Center, which was held on February 8, 2012, in Orlando, Florida. The topic, Key Innovations for Adding Energy Efficiency to Maintenance Projects, was intended to provide direction to more focused efforts to increase the efficiency of existing homes; in this meeting, the focus was specifically for re-roofing and the opportunities for adding energy efficiency upgrades during this major home repair a… more
Date: September 1, 2012
Creator: Wood, A. & Wiehagen, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An efficient modeling method for thermal stratification simulation in a BWR suppression pool

Description: The suppression pool in a BWR plant not only is the major heat sink within the containment system, but also provides major emergency cooling water for the reactor core. In several accident scenarios, such as LOCA and extended station blackout, thermal stratification tends to form in the pool after the initial rapid venting stage. Accurately predicting the pool stratification phenomenon is important because it affects the peak containment pressure; and the pool temperature distribution also affe… more
Date: September 1, 2012
Creator: Zhao, Haihua; Zou, Ling; Zhang, Hongbin; Li, Hua; Villanueva, Walter & Kudinov, Pavel
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Analog Video Authentication and Seal Verification Equipment Development

Description: Under contract to the US Department of Energy in support of arms control treaty verification activities, the Savannah River National Laboratory in conjunction with the Pacific Northwest National Laboratory, the Idaho National Laboratory and Milagro Consulting, LLC developed equipment for use within a chain of custody regime. This paper discussed two specific devices, the Authentication Through the Lens (ATL) analog video authentication system and a photographic multi-seal reader. Both of these … more
Date: September 1, 2012
Creator: Lancaster, Gregory
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

LANDSCAPE MANAGEMENT FOR SUSTAINABLE SUPPLIES OF BIOENERGY FEEDSTOCK AND ENHANCED SOIL QUALITY

Description: Agriculture can simultaneously address global food, feed, fiber, and energy challenges provided our soil, water, and air resources are not compromised in doing so. As we embark on the 19th Triennial Conference of the International Soil and Tillage Research Organization (ISTRO), I am pleased to proclaim that our members are well poised to lead these endeavors because of our comprehensive understanding of soil, water, agricultural and bio-systems engineering processes. The concept of landscape ma… more
Date: September 1, 2012
Creator: Karlen, Douglas L. & David J. Muth, Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Housing Stock Characterization Study: An Innovative Approach to Measuring Retrofit Impact

Description: A residential energy efficiency retrofit loan program depends on a self-sustaining finance option and optimized retrofit measures that recoup their unsubsidized costs through energy bill savings alone within the useful life of the retrofit. A first step in evaluating retrofit options is to measure and verify their energy savings. This report evaluates Orlando Utilities Commission (OUC) residential energy-efficiency demand side management (DSM) programs to assess their relative energy and econom… more
Date: September 1, 2012
Creator: Jones, P.; Taylor, N. & Kipp, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NUCLEAR ENERGY SYSTEM COST MODELING

Description: The U.S. Department of Energy’s Fuel Cycle Technologies (FCT) Program is preparing to perform an evaluation of the full range of possible Nuclear Energy Systems (NES) in 2013. These include all practical combinations of fuels and transmuters (reactors and sub-critical systems) in single and multi-tier combinations of burners and breeders with no, partial, and full recycle. As part of this evaluation, Levelized Cost of Electricity at Equilibrium (LCAE) ranges for each representative system will … more
Date: September 1, 2012
Creator: Ganda, Francesco & Dixon, Brent
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Effective Grid Utilization: A Technical Assessment and Application Guide; April 2011 - September 2012

Description: In order to more fully integrate renewable resources, such as wind and solar, into the transmission system, additional capacity must be realized in the short term using the installed transmission capacity that exists today. The U.S. Department of Energy (DOE) and the National Renewable Energy Laboratory Transmission and Grid Integration Group supported this study to assemble the history of regulations and status of transmission technology to expand existing grid capacity. This report compiles d… more
Date: September 1, 2012
Creator: Balser, S.; Sankar, S.; Miller, R.; Rawlins, A.; Israel, M.; Curry, T. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Guidance for Deployment of Mobile Technologies for Nuclear Power Plant Field Workers

Description: This report is a guidance document prepared for the benefit of commercial nuclear power plants’ (NPPs) supporting organizations and personnel who are considering or undertaking deployment of mobile technology for the purpose of improving human performance and plant status control (PSC) for field workers in an NPP setting. This document especially is directed at NPP business managers, Electric Power Research Institute, Institute of Nuclear Power Operations, and other non-Information Technology p… more
Date: September 1, 2012
Creator: Medema, Heather D. & Farris, Ronald K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Automated Thermal Image Processing for Detection and Classification of Birds and Bats - FY2012 Annual Report

Description: Surveying wildlife at risk from offshore wind energy development is difficult and expensive. Infrared video can be used to record birds and bats that pass through the camera view, but it is also time consuming and expensive to review video and determine what was recorded. We proposed to conduct algorithm and software development to identify and to differentiate thermally detected targets of interest that would allow automated processing of thermal image data to enumerate birds, bats, and insect… more
Date: September 1, 2012
Creator: Duberstein, Corey A.; Matzner, Shari; Cullinan, Valerie I.; Virden, Daniel J.; Myers, Joshua R. & Maxwell, Adam R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Functionalized ultra-porous titania nanofiber membranes as nuclear waste separation and sequestration scaffolds for nuclear fuels recycle.

Description: Advanced nuclear fuel cycle concept is interested in reducing separations to a simplified, one-step process if possible. This will benefit from the development of a one-step universal getter and sequestration material so as a simplified, universal waste form was proposed in this project. We have developed a technique combining a modified sol-gel chemistry and electrospinning for producing ultra-porous ceramic nanofiber membranes with controllable diameters and porous structures as the separatio… more
Date: September 1, 2012
Creator: Liu, Haiqing; Bell, Nelson Simmons; Cipiti, Benjamin B.; Lewis, Tom Goslee,; Sava, Dorina Florentina & Nenoff, Tina Maria
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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