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Advancing Net-Zero Energy Commercial Buildings; Electricity, Resources, & Building Systems Integration (Fact Sheet)

Description: This fact sheet provides an overview of the research the National Renewable Energy Laboratory is conducting to achieve net-zero energy buildings (NZEBs). It also includes key definitions of NZEBs and inforamtion about an NZEB database that captures information about projects around the world.
Date: October 1, 2009
Partner: UNT Libraries Government Documents Department

Computer Modeling of Carbon Metabolism Enables Biofuel Engineering (Fact Sheet)

Description: In an effort to reduce the cost of biofuels, the National Renewable Energy Laboratory (NREL) has merged biochemistry with modern computing and mathematics. The result is a model of carbon metabolism that will help researchers understand and engineer the process of photosynthesis for optimal biofuel production.
Date: September 1, 2011
Partner: UNT Libraries Government Documents Department

Structural Testing

Description: Structural testing at the National Wind Technology Center (NWTC) offers many benefits to wind turbine companies. NWTC includes a new high bay large enough to test any blade expected during the next 5 years. (There are four test bays.) In 1995, NWTC developed a saphisticated data acquisition system, known as the Blade Structural Testing Real-time Acquisition Interface Network (BSTRAIN), to monitor structural testing through 24-hour continuous video surveillance. NWTC recommends ultimate static-strength and fatigue testing, with nondestructive testing in some cases (vibrational testing is covered in a separate information sheet).
Date: June 1, 1996
Partner: UNT Libraries Government Documents Department

NREL's Industry Growth Forum Boosts Clean Energy Commercialization Efforts (Fact Sheet)

Description: For more than a decade, the National Renewable Energy Laboratory's (NREL) Industry Growth Forum has been the nation's premier event for early-stage clean energy investment. The forum features presentations from the most innovative, promising, and emergent clean energy companies; provocative panels led by thought leaders; and organized networking opportunities. It is the perfect venue for growing cleantech companies to present their business to a wide range of investors.
Date: December 1, 2010
Partner: UNT Libraries Government Documents Department

Enhancing Commercial Outcomes from R&D: A Framework for a Public-Private Partnership to Increase the Yield of Federally Funded R&D Investments and Promote Economic Development

Description: This paper explores a new model for public sector investors to enhance and accelerate the commercialization of clean energy investments.
Date: May 1, 2007
Creator: Murphy, L. M.; Jerde, P.; Rutherford, L. & Barone, R.
Partner: UNT Libraries Government Documents Department

Recent wind resource characterization activities at the National Renewable Energy Laboratory

Description: The wind resource characterization team at the National Renewable Energy Laboratory (NREL) is working to improve the characterization of the wind resource in many key regions of the world. Tasks undertaken in the past year include: updates to the comprehensive meteorological and geographic data bases used in resource assessments in the US and abroad; development and validation of an automated wind resource mapping procedure; support in producing wind forecasting tools useful to utilities involved in wind energy generation; continued support for recently established wind measurement and assessment programs in the US.
Date: July 1, 1997
Creator: Elliott, D.L. & Schwartz, M.N.
Partner: UNT Libraries Government Documents Department

2nd Workshop on Satellites for Solar Energy Assessments

Description: A Collection of Presentations on new techniques for developing climatological estimates of the solar resource at all locations on earth at a resolution of 100km, and of developing estimates at half-hour intervals at resolutions of 10 km or less in specific locations.
Date: June 28, 1999
Creator: Renne, D.
Partner: UNT Libraries Government Documents Department

Experimental investigation of aerodynamic devices for wind turbine rotational speed control. Phase 1

Description: An investigation was undertaken to identify the aerodynamic performance of five separate trailing-edge control devices, and to evaluate their potential for wind turbine overspeed and power modulation applications. A modular two-dimensional wind tunnel model was constructed and evaluated during extensive wind tunnel testing. Aerodynamic lift, drag, suction, and pressure coefficient data were acquired and analyzed for various control configurations and angles of attack. To further interpret their potential performance, the controls were evaluated numerically using a generic wind turbine geometry and a performance analysis computer program. Results indicated that the Spoiler-Flap control configuration was best softed for turbine braking applications. It exhibited a large negative suction coefficient over a broad angle-of-attack range, and good turbine braking capabilities, especially at low tip-speed ratio.
Date: February 1, 1995
Creator: Miller, L.S.
Partner: UNT Libraries Government Documents Department

The Use of Reanalysis Data for Wind Resource Assessment at the National Renewable Energy Laboratory

Description: An important component of the National Renewable Energy Laboratory wind resource assessment methodology is the use of available upper-air data to construct detailed vertical profiles for a study region. Currently, the most useful upper-air data for this type of analysis are archived observations from approximately 1800 rawinsonde and pilot balloon stations worldwide. However, significant uncertainty exists in the accuracy of the constructed profiles for many regions. The United States Reanalysis Data Set, recently created by the National Center for Atmospheric Research and the National Centers for Environmental Prediction, has the potential to improve the quality of the vertical profiles. The initial evaluation of the usefulness of the Reanalysis data for wind resource assessment consisted of contrasting reanalysis-derived vertical profiles of the wind characteristics to those generated from upper-air observations for comparable locations. The results indicate that, while reanalysis data can be substituted for upper-air observation data in the assessment methodology for areas of the world where observation data are limited, enough discrepancies with observation data have been noticed to warrant further studies.
Date: April 7, 1999
Creator: Schwartz, M.; George, R. & Elliott, D.
Partner: UNT Libraries Government Documents Department

The DOE/NREL Environmental Science and Health Effects Program - An Overview

Description: This paper summarizes current work in the Environmental Science and Health Effects (ES and HE) Program being sponsored by DOE's Office of Heavy Vehicle Technologies (OHVT) through the National Renewable Energy Laboratory (NREL). The program is regulatory-driven, and focuses on ozone, airborne particles, visibility and regional haze, air toxics, and health effects of air pollutants. The goal of the ES and HE Program is to understand atmospheric impacts and potential health effects that may be caused by the use of petroleum-based and alternative transportation fuels. Each project in the program is designed to address policy-relevant objectives. Studies in the ES and HE Program have four areas of focus: improving technology for emissions measurements; vehicle emissions measurements, emission inventory development/improvement; and ambient impacts, including health effects.
Date: April 26, 1999
Creator: Lawson, Douglas R. & Gurevich, Michael
Partner: UNT Libraries Government Documents Department

The DOE/NREL Environmental Science Program

Description: This paper summarizes the several of the studies in the Environmental Science Program being sponsored by DOE's Office of Heavy Vehicle Technologies (OHVT) through the National Renewable Energy Laboratory (NREL). The goal of the Environmental Science Program is to understand atmospheric impacts and potential health effects that may be caused by the use of petroleum-based fuels and alternative transportation fuels from mobile sources. The Program is regulatory-driven, and focuses on ozone, airborne particles, visibility and regional haze, air toxics, and health effects of air pollutants. Each project in the Program is designed to address policy-relevant objectives. Current projects in the Environmental Science Program have four areas of focus: improving technology for emissions measurements; vehicle emissions measurements; emission inventory development/improvement; ambient impacts, including health effects.
Date: May 14, 2001
Creator: Lawson, Douglas R. & Gurevich, Michael
Partner: UNT Libraries Government Documents Department

Final Report DE-GH 36-02GO12033

Description: The National Alliance of Clean Energy Business Incubators, established in 2000 by the National Renewable Energy Laboratory (NREL), is an emerging network of select business incubators providing business and financial services to clean energy entrepreneurs.
Date: December 10, 2003
Creator: Kershaw, David
Partner: UNT Libraries Government Documents Department

Investigation of Advanced Power Plants and Multiple Use Applications for Single Occupancy Vehicles

Description: Modeling of advanced and conventional drivetrains in a single occupancy vehicle has been undertaken utilizing numerical modeling. The vehicle modeling code Advisor, developed at the National Renewable Energy Laboratory, has shown that high efficiency, low power output hybrid vehicle drivetrains can almost double the economy relative to conventional powertrains. Experimental verification of the high efficiency potential of a free piston based electrical generator at 2 kilowatts output has been accomplished. For the purpose of introducing this class of transportation, however, the low cost and robust construction of the conventional drivetrain may be the logical first choice.
Date: January 1, 2002
Creator: Blarigan, Peter Van
Partner: UNT Libraries Government Documents Department

National Wind Technology Center sitewide, Golden, CO: Environmental assessment

Description: The National Renewable Energy Laboratory (NREL), the nation`s primary solar and renewable energy research laboratory, proposes to expand its wind technology research and development program activities at its National Wind Technology Center (NWTC) near Golden, Colorado. NWTC is an existing wind energy research facility operated by NREL for the US Department of Energy (DOE). Proposed activities include the construction and reuse of buildings and facilities, installation of up to 20 wind turbine test sites, improvements in infrastructure, and subsequent research activities, technology testing, and site operations. In addition to wind turbine test activities, NWTC may be used to support other NREL program activities and small-scale demonstration projects. This document assesses potential consequences to resources within the physical, biological, and human environment, including potential impacts to: air quality, geology and soils, water resources, biological resources, cultural and historic resources, socioeconomic resources, land use, visual resources, noise environment, hazardous materials and waste management, and health and safety conditions. Comment letters were received from several agencies in response to the scoping and predecisional draft reviews. The comments have been incorporated as appropriate into the document with full text of the letters contained in the Appendices. Additionally, information from the Rocky Flats Environmental Technology Site on going sitewide assessment of potential environmental impacts has been reviewed and discussed by representatives of both parties and incorporated into the document as appropriate.
Date: November 1, 1996
Partner: UNT Libraries Government Documents Department

Comparison of Module Performance Characterization Methods

Description: The rating and modeling of photovoltaic PW module performance has been of concern to manufacturers and system designers for over 20 years. Both the National Renewable Energy Laboratory (NREL) and Sandia National Laboratories (SNL) have developed methodologies to predict module and array performance under actual operating conditions. This paper compares the two methods of determining the performance of PV modules, The methods translate module performance to actual or reference conditions using slightly different approaches. The accuracy of both methods is compared for both hourly, daily, and annual energy production over a year of data recorded at NREL in Golden, CO. The comparison of the two methods will be presented for five different PV module technologies.
Date: October 3, 2000
Creator: KROPOSKI,B.; MARION,W.; KING,DAVID L.; BOYSON,WILLIAM EARL & KRATOCHVIL,JAY A.
Partner: UNT Libraries Government Documents Department

Wind Integration Cost and Cost-Causation: Preprint

Description: The question of wind integration cost has received much attention in the past several years. The methodological challenges to calculating integration costs are discussed in this paper. There are other sources of integration cost unrelated to wind energy. A performance-based approach would be technology neutral, and would provide price signals for all technology types. However, it is difficult to correctly formulate such an approach. Determining what is and is not an integration cost is challenging. Another problem is the allocation of system costs to one source. Because of significant nonlinearities, this can prove to be impossible to determine in an accurate and objective way.
Date: October 1, 2013
Creator: Milligan, M.; Kirby, B.; Holttinen, H.; Kiviluoma, J.; Estanqueiro, A.; Martin-Martinez, S. et al.
Partner: UNT Libraries Government Documents Department

Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project: Progress Update (Presentation)

Description: Presentation outlining the progress of DOE's Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project, prepared for the 2006 National Hydrogen Association Meeting.
Date: March 13, 2006
Creator: Wipke, K.; Welch, C.; Thomas, H.; Sprik, S.; Gronich, S.; J., Garbak. et al.
Partner: UNT Libraries Government Documents Department

NREL Spectrum of Clean Energy Innovation: Issue 3 (Book)

Description: This quarterly magazine is dedicated to stepping beyond the technical journals to reveal NREL's vital work in a real-world context for our stakeholders. Continuum provides insights into the latest and most impactful clean energy innovations, while spotlighting those talented researchers and unique facilities that make it all happen. This edition focuses on the NREL Spectrum of Clean Energy Innovation.
Date: November 1, 2012
Partner: UNT Libraries Government Documents Department