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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

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

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
open access

Creating dynamic equivalent PV circuit models with impedance spectroscopy for arc-fault modeling.

Description: Article 690.11 in the 2011 National Electrical Code{reg_sign} (NEC{reg_sign}) requires new photovoltaic (PV) systems on or penetrating a building to include a listed arc fault protection device. Currently there is little experimental or empirical research into the behavior of the arcing frequencies through PV components despite the potential for modules and other PV components to filter or attenuate arcing signatures that could render the arc detector ineffective. To model AC arcing signal prop… more
Date: June 1, 2011
Creator: Johnson, Jay Dean; Kuszmaul, Scott S.; Strauch, Jason E. & Schoenwald, David Alan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

EXTENDING THE USEFUL LIFE OF OLDER MASS SPECTROMETERS

Description: Thermal ionization and gas mass spectrometers are widely used across the Department of Energy (DOE) Complex and contractor laboratories. These instruments support critical missions, where high reliability and low measurement uncertainty are essential. A growing number of these mass spectrometers are significantly older than their original design life. The reality is that manufacturers have declared many of the instrument models obsolete, with direct replacement parts and service no longer avail… more
Date: June 17, 2010
Creator: Johnson, S.; Cordaro, J.; Holland, M. & Jones, V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Experimental and Numerical Examination of the Thermal Transmittance of High Performance Window Frames

Description: While window frames typically represent 20-30percent of the overall window area, their impact on the total window heat transfer rates may be much larger. This effect is even greater in low-conductance (highly insulating) windows which incorporate very low conductance glazings. Developing low-conductance window frames requires accurate simulation tools for product research and development. The Passivhaus Institute in Germany states that windows (glazing and frames, combined) should have U-values… more
Date: June 17, 2010
Creator: Gustavsen Ph.D., Arild; Goudey, Howdy; Kohler, Christian; Arasteh P.E., Dariush; Uvslokk, Sivert; Talev, Goce et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Model Predictive Control of HVAC Systems: Implementation and Testing at the University of California, Merced

Description: A Model Predictive Control algorithm was developed for the UC Merced campus chilled water plant. Model predictive control (MPC) is an advanced control technology that has proven successful in the chemical process industry and other industries. The main goal of the research was to demonstrate the practical and commercial viability of MPC for optimization of building energy systems. The control algorithms were developed and implemented in MATLAB, allowing for rapid development, performance, and r… more
Date: June 29, 2010
Creator: Haves, Phillip; Hencey, Brandon; Borrell, Francesco; Elliot, John; Ma, Yudong; Coffey, Brian et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners

Description: In recent years China's energy consumption has increased rapidly. The problem of high energy consumption intensity and low energy utilization efficiency is serious, and the contradiction between economic development and energy and environmental resources has become increasingly acute, making energy conservation and consumption reduction an important society-wide concern. At the same time, global climate change has and will continue to have profound impacts on human survival and development, and… more
Date: June 7, 2010
Creator: Zhou, Nan; Fridley, David; Zheng, Nina & Pierrot, Andre
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tidal Energy System for On-Shore Power Generation

Description: Addressing the urgent need to develop LCOE competitive renewable energy solutions for US energy security and to replace fossil-fuel generation with the associated benefits to environment impacts including a reduction in CO2 emissions, this Project focused on the advantages of using hydraulic energy transfer (HET) in large-scale Marine Hydrokinetic (MHK) systems for harvesting off-shore tidal energy in US waters. A recent DOE resource assessment, identifies water power resources have a potential… more
Date: June 26, 2012
Creator: Bruce, Allan J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermal Study of Inverter Components: Preprint

Description: Thermal histories of inverter components were collected from operating inverters from several manufacturers and three locations. The data were analyzed to determine thermal profiles, the dependence on local conditions, and to assess the effect on inverter reliability. Inverter temperatures were shown to increase with the power dissipation of the inverters, follow diurnal and annual cycles, and have a dependence on wind speed. An accumulated damage model was applied to the temperature profiles a… more
Date: June 1, 2012
Creator: Sorensen, N. R.; Thomas, E. V.; Quintana, M. A.; Barkaszi, S.; Rosenthal, A.; Zhang, Z. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Status and Outlook for the U.S. Non-Automotive Fuel Cell Industry: Impacts of Government Policies and Assessment of Future Opportunities

Description: Fuel cells (FCs) are considered essential future energy technologies by developed and developing economies alike. Several countries, including the United States, Japan, Germany, and South Korea have established publicly funded R&D and market transformation programs to develop viable domestic FC industries for both automotive and non-automotive applications. Important non-automotive applications include large scale and small scale distributed combined heat and electrical power, backup and uninte… more
Date: June 1, 2011
Creator: Greene, David L; Duleep, K. G. & Upreti, Girish
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NREL Documents Efficiency of Mini-Split Heat Pumps (Fact Sheet)

Description: A new report delivers mini-split heat pump (MSHP) performance data for use in whole-building simulation tools. Mini-split heat pumps (MSHPs) are highly efficient refrigerant-based air conditioning and heating systems that permit room-by-room conditioning and control in homes. Because of their size, efficiency, and price, MSHPs are very popular overseas and are gaining market share in energy-efficient home upgrades in the United States. They are a good option for retrofitting older homes that la… more
Date: June 1, 2012
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mitigation of Hydrogen Gas Generation from the Reaction of Uranium Metal with Water in K Basin Sludge and Sludge Waste Forms

Description: Prior laboratory testing identified sodium nitrate and nitrite to be the most promising agents to minimize hydrogen generation from uranium metal aqueous corrosion in Hanford Site K Basin sludge. Of the two, nitrate was determined to be better because of higher chemical capacity, lower toxicity, more reliable efficacy, and fewer side reactions than nitrite. The present lab tests were run to determine if nitrate’s beneficial effects to lower H2 generation in simulated and genuine sludge continue… more
Date: June 8, 2011
Creator: Sinkov, Sergey I.; Delegard, Calvin H. & Schmidt, Andrew J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Diborane Electrode Response in 3D Silicon Sensors for the CMS and ATLAS Experiments

Description: Unusually high leakage currents have been measured in test wafers produced by the manufacturer SINTEF containing 3D pixel silicon sensor chips designed for the ATLAS (A Toroidal LHC ApparatuS) and CMS (Compact Muon Solenoid) experiments. Previous data has shown the CMS chips as having a lower leakage current after processing than ATLAS chips. Some theories behind the cause of the leakage currents include the dicing process and the usage of copper in bump bonding, and with differences in packagi… more
Date: June 22, 2011
Creator: Brown, Emily R. & /SLAC, /Reed Coll.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Working with U.S. Manufacturers to Succeed in Global Markets (Poster)

Description: Poster created for the Advanced Manufacturing Office to be used at meetings, presentations, and exhibits. The Advanced Manufacturing Office (AMO) fosters advanced manufacturing innovation, facilitates public and private partnerships, and drives rapid deployment of technologies to help manufacturers: Save energy and money, Reduce environmental impacts, Enhance workforce development, and Improve national energy security and competitiveness throughout the supply chain.
Date: June 1, 2012
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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