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Deployment Effects of Marine Renewable Energy Technologies: Wave Energy Scenarios

Description: Given proper care in siting, design, deployment, operation and maintenance, wave energy conversion could become one of the more environmentally benign sources of electricity generation. In order to accelerate the adoption of these emerging hydrokinetic and marine energy technologies, navigational and environmental concerns must be identified and addressed. All developing hydrokinetic projects involve a wide variety of stakeholders. One of the key issues that site developers face as they engage … more
Date: June 17, 2010
Creator: Previsic, Mirko
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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

Max Tech and Beyond: High-Intensity Discharge Lamps

Description: High-intensity discharge (HID) lamps are most often found in industrial and commercial applications, and are the light source of choice in street and area lighting, and sports stadium illumination. HID lamps are produced in three types - mercury vapor (MV), high pressure sodium (HPS) and metal halide (MH). Of these, MV and MH are considered white-light sources (although the MV exhibits poor color rendering) and HPS produces a yellow-orange color light. A fourth lamp, low-pressure sodium (LPS), … more
Date: April 1, 2012
Creator: Scholand, Michael
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of the Current Level of Automation in the Manufacture of Fuel Cell Systems for Combined Heat and Power Applications

Description: The U.S. Department of Energy (DOE) is interested in supporting manufacturing research and development (R&D) for fuel cell systems in the 10-1,000 kilowatt (kW) power range relevant to stationary and distributed combined heat and power applications, with the intent to reduce manufacturing costs and increase production throughput. To assist in future decision-making, DOE requested that the National Renewable Energy Laboratory (NREL) provide a baseline understanding of the current levels of adopt… more
Date: August 1, 2011
Creator: Ulsh, M.; Wheeler, D. & Protopappas, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DEVELOPMENT AND ASSESSMENT OF COATINGS FOR FUTURE POWER GENERATION TURBINES

Description: The NETL-Regional University Alliance (RUA) continues to advance technology development critical to turbine manufacturer efforts for achieving DOE Fossil Energy (FE's) Advanced Turbine Program Goals. In conjunction with NETL, Coatings for Industry (CFI), the University of Pittsburgh, NASA GRC, and Corrosion Control Inc., efforts have been focused on development of composite thermal barrier coating (TBC) architectures that consist of an extreme temperature coating, a commercially applied 7-8 YSZ… more
Date: January 1, 2012
Creator: Alvin, Maryanne; Klotz, K.; McMordie, B.; Gleeson, B.; Zhu, D.; Warnes, B. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Impact response of US Army and National Football League helmet pad systems

Description: Lawrence Livermore National Laboratory [LLNL] was tasked to compare the impact response of NFL helmet pad systems and U.S. Army pad systems compatible with an Advanced Combat Helmet [ACH] at impact velocities up to 20 ft/s. This was a one-year study funded by the U.S. Army and JIEDDO. The Army/JIEDDO point of contact is COL R. Todd Dombroski, DO, JIEDDO Surgeon. LLNL was chosen by committee to perform the research based on prior published computational studies of the mechanical response of helm… more
Date: February 18, 2011
Creator: Moss, W C & King, M J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Deployment Effects of Marin Renewable Energy Technologies

Description: Given proper care in siting, design, deployment, operation and maintenance, marine and hydrokinetic technologies could become one of the more environmentally benign sources of electricity generation. In order to accelerate the adoption of these emerging hydrokinetic and marine energy technologies, navigational and environmental concerns must be identified and addressed. All developing hydrokinetic projects involve a wide variety of stakeholders. One of the key issues that site developers face a… more
Date: June 17, 2010
Creator: Polagye, Brian & Previsic, Mirko
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Use of Residential Smart Appliances for Peak-Load Shifting and Spinning Reserves-Cost/Benefit Analysis

Description: In this report, we present the results of an analytical cost/benefit study of residential smart appliances from a utility/grid perspective in support of a joint stakeholder petition to the ENERGY STAR program within the Environmental Protection Agency (EPA) and Department of Energy (DOE). The goal of the petition is in part to provide appliance manufacturers incentives to hasten the production of smart appliances. The underlying hypothesis is that smart appliances can play a critical role in ad… more
Date: December 1, 2010
Creator: Sastry, Chellury; Pratt, Robert G.; Srivastava, Viraj & Li, Shun
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Science for Society Workshop Summary Report

Description: Science for Society, a workshop held at the Oak Ridge National Laboratory (ORNL) on September 27, 20111, explored ways to move Laboratory science toward use. It sought actionable recommendations. Thus the workshop focused on: (1) current practices that promote and inhibit the translation of science into use, (2) principles that could lead to improving ORNL's translational knowledge and technology transfer efforts, and (3) specific recommendations for making these principles operational. This hi… more
Date: February 1, 2012
Creator: Wolfe, Amy K; Bjornstad, David J; Lenhardt, W Christopher; Shumpert, Barry L & Wang, Stephanie
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Examination of a Junction-Box Adhesion Test for Use in Photovoltaic Module Qualification: Preprint

Description: Engineering robust adhesion of the junction-box (j-box) is a hurdle typically encountered by photovoltaic (PV) module manufacturers during product development. There are historical incidences of adverse effects (e.g., fires) caused when the j-box/adhesive/module system has failed in the field. The addition of a weight to the j-box during the 'damp heat' IEC qualification test is proposed to verify the basic robustness of its adhesion system. The details of the proposed test will be described, i… more
Date: August 1, 2012
Creator: Miller, D. C. & Wohlgemuth, J. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Alstom 3-MW Wind Turbine Installed at NWTC (Fact Sheet)

Description: The 3-MW Alstom wind turbine was installed at NREL's NWTC in October 2010. Test data will be used to validate advanced turbine design and analysis tools. NREL signed a Cooperative Research and Development Agreement with Alstom in 2010 to conduct certification testing on the company's 3-MW ECO 100 wind turbine and to validate models of Alstom's unique drivetrain concept. The turbine was installed at NREL's National Wind Technology Center (NWTC) in October 2010 and engineers began certification t… more
Date: September 1, 2011
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

New Tool Quantitatively Maps Minority-Carrier Lifetime of Multicrystalline Silicon Bricks (Fact Sheet)

Description: NREL's new imaging tool could provide manufacturers with insight on their processes. Scientists at the National Renewable Energy Laboratory (NREL) have used capabilities within the Process Development and Integration Laboratory (PDIL) to generate quantitative minority-carrier lifetime maps of multicrystalline silicon (mc-Si) bricks. This feat has been accomplished by using the PDIL's photoluminescence (PL) imaging system in conjunction with transient lifetime measurements obtained using a custo… more
Date: November 1, 2011
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Do Heat Pump Clothes Dryers Make Sense for the U.S. Market

Description: Heat pump clothes dryers (HPCDs) can be as much as 50percent more energy-efficient than conventional electric resistance clothes dryers, and therefore have the potential to save substantial amounts of electricity. While not currently available in the U.S., there are manufacturers in Europe and Japan that produce units for those markets. Drawing on analysis conducted for the U.S. Department of Energy's (DOE) current rulemaking on amended standards for clothes dryers, this paper evaluates the cos… more
Date: May 14, 2010
Creator: Meyers, Steve; Franco, Victor; Lekov, Alex; Thompson, Lisa & Sturges, Andy
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Preface to International Workshop on X-ray Mirror Design, Fabrication, and Metrology

Description: The International Workshop on X-Ray Mirror Design, Fabrication, and Metrology (IWXM), Osaka, Japan, was held as a satellite meeting of the Conference on Synchrotron Radiation Instrumentation (SRI) 2009, Melbourne, Australia, in October, 2009. The workshop was organized by a collaboration of scientists from a number of leading synchrotron institutions and universities around the World, such as Osaka University, SPring-8, KEK (Japan), ALS, APS and NSLS (USA), ELETTRA (Italy), ESRF, Synchrotron SO… more
Date: April 20, 2010
Creator: Yamauchi, Kazuto; Yashchuk, Valeriy V. & Cocco, Daniele
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

GLOVEBOX GLOVE CHARACTERIZATION SUMMARY

Description: A task was undertaken to determine primarily the permeation behavior of various glove compounds from four manufacturers. As part of the basic characterization task, the opportunity to obtain additional mechanical and thermal properties presented itself. Consequently, a total of fifteen gloves were characterized for permeation, Thermogravimetric Analysis, Puncture Resistance, Tensile Properties and Dynamic Mechanical Analysis. Detailed reports were written for each characterization technique use… more
Date: May 14, 2012
Creator: Korinko, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optimization of Solar Cell Design for Use with GreenVolts CPV System: Cooperative Research and Development Final Report, CRADA Number CRD-08-00281

Description: GreenVolts, a Bay area start-up, was developing a CPV system that was based on a unique reflective optical design. They were interested in adapting the inverted GaInP/GaAs/GaInAs cell structure designed at NREL for use in their system. The purpose of this project was to optimize the inverted GaInP/GaAs/GaInAs cell for operation in the GreenVolts optical system.
Date: May 1, 2011
Creator: Ward, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Standard Hydrogen Test Protocols for the NREL Sensor Testing Laboratory (Brochure)

Description: This brochure summarizes the test protocols used in the NREL Hydrogen Sensor Test Laboratory for the quantitative assessment of critical analytical performance specifications for hydrogen sensors. Researchers at the NREL Hydrogen Safety Sensor Test Laboratory developed a variety of test protocols to quantitatively assess critical analytical performance specifications for hydrogen sensors. Many are similar to, but typically more rigorous than, the test procedures mandated by ISO Standard 26142 (… more
Date: December 1, 2011
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Using Electric Vehicles to Meet Balancing Requirements Associated with Wind Power

Description: Many states are deploying renewable generation sources at a significant rate to meet renewable portfolio standards. As part of this drive to meet renewable generation levels, significant additions of wind generation are planned. Due to the highly variable nature of wind generation, significant energy imbalances on the power system can be created and need to be handled. This report examines the impact on the Northwest Power Pool (NWPP) region for a 2019 expected wind scenario. One method for mit… more
Date: July 31, 2011
Creator: Tuffner, Francis K. & Kintner-Meyer, Michael CW
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Market and behavioral barriers to energy efficiency: A preliminary evaluation of the case for tariff financing in California

Description: Consumers regularly forgo purchases of high efficiency appliances that appear to be cost effective at a reasonable rate of return. While some argue that this is a true revelation of preferences for appliance features, this 'efficiency gap' can be largely explained by a combination of market and behavioral failures that reduce consumers ability to evaluate the relative value of appliances and skew preferences toward initial cost savings, undervaluing future reductions in operating costs. These f… more
Date: June 23, 2011
Creator: Fujita, K. Sydny
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Proposed Junction-Box Stress Test (Using an Added Weight) for Use During the Module Qualification

Description: Engineering robust adhesion of the junction-box (j-box) is a hurdle typically encountered by photovoltaic (PV) module manufacturers during product development. Furthermore, there are historical incidences of adverse effects (e.g., fires) caused when the j-box/adhesive/module system has failed in the field. The addition of a weight to the j-box during the 'damp heat' IEC qualification test is proposed to verify the basic robustness of the j-box adhesion system. The details of the proposed test a… more
Date: February 1, 2012
Creator: Miller, D. C.; Wohlgemuth, J. H. & Kurtz, S. R.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
open access

Examination of Na-Doped Mo Sputtering for CIGS Devices: Cooperative Research and Development Final Report, CRADA Number CRD-10-375

Description: This work has investigated the use of Na doped Mo (MONA) sputtering targets for use in preparing CIGS devices. The Mo:Na material is doped to about 3% Na by weight, implying that a 40 nm layer on top of the standard Mo contact contains sufficient Na to dope a 2.5 ..mu..m CIGS film. The ability to control Na doping independent of both CIGS processing conditions and adhesion is an important gain for industry and research. Manufacturers gain a route to increased manufacturability and performance, … more
Date: January 1, 2012
Creator: Repins, I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Market Barriers to Solar in Michigan

Description: The solar industry in the United States is at a turning point; the cost of PV hardware has declined substantially in recent years, placing new attention on reducing the balance of system (BOS) costs of solar that now contribute to a growing percentage of installation expenses. How states address these costs through the creation of a favorable policy and regulatory environment is proving to be a critical determinant of a thriving statewide solar market. This report addresses the permitting and t… more
Date: August 1, 2012
Creator: Miller, E.; Nobler, E.; Wolf, C. & Doris, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NWTC Controllable Grid Interface (Fact Sheet)

Description: NREL's Controllable Grid Interface tests wind turbines off-line from the grid, verifies compliance with standards, and provides grid operators with the performance information they need for a faction of the time and cost it would take to test the turbine in the field. To understand the behavior of wind turbines during grid disturbances, manufacturers and utility grid operators need to perform a series of tests and accurate transient simulation studies. The latest edition of the IEC 61400-21 sta… more
Date: February 1, 2012
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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