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Articles 3181 - 3210 of 3637

Full-Text Articles in Oil, Gas, and Energy

Slides: Engaging Stakeholders, Duane Zavadil Oct 2010

Slides: Engaging Stakeholders, Duane Zavadil

Opportunities and Obstacles to Reducing the Environmental Footprint of Natural Gas Development in Uintah Basin (October 14)

Presenter: Duane Zavadil, Bill Barrett Corporation

5 slides


Slides: Geospatial Decision Support For Shale Gas Site Development, Malcolm Williamson, Jackson Cothren, Peter Smith Oct 2010

Slides: Geospatial Decision Support For Shale Gas Site Development, Malcolm Williamson, Jackson Cothren, Peter Smith

Opportunities and Obstacles to Reducing the Environmental Footprint of Natural Gas Development in Uintah Basin (October 14)

Presenter: Malcolm Williamson, Center for Advanced Spatial Technologies, University of Arkansas

50 slides


Economic Analysis Of A Brackish Water Photovoltaic-Operated (Bwro-Pv) Desalination System, Ali Al-Karaghouli, Lawrence L. Kazmerski Oct 2010

Economic Analysis Of A Brackish Water Photovoltaic-Operated (Bwro-Pv) Desalination System, Ali Al-Karaghouli, Lawrence L. Kazmerski

Publications (E)

The photovoltaic (PV)-powered reverse-osmosis (RO) desalination system is considered one of the most promising technologies in producing fresh water from both brackish and sea water, especially for small systems located in remote areas. We analyze the economic viability of a small PV-operated RO system with a capacity of 5 m3/day used to desalinate brackish water of 4000 ppm total dissolve solids, which is proposed to be installed in a remote area of the Babylon governorate in the middle of Iraq; this area possesses excellent insolation throughout the year. Our analysis predicts very good economic and environmental benefits of …


User's Guide To Mbc3: Multi-Blade Coordinate Transformation Code For 3-Bladed Wind Turbine, G. S. Bir Sep 2010

User's Guide To Mbc3: Multi-Blade Coordinate Transformation Code For 3-Bladed Wind Turbine, G. S. Bir

Publications (E)

The dynamics of wind turbine rotor blades are conventionally expressed in rotating frames attached to the individual blades. The tower-nacelle subsystem though, sees the combined effect of all rotor blades, not the individual blades. Also, the rotor responds as a whole to excitations such as aerodynamic gusts, control inputs, and tower-nacelle motion—all of which occur in a nonrotating frame. Multi-blade coordinate transformation (MBC) helps integrate the dynamics of individual blades and express them in a fixed (nonrotating) frame. MBC involves two steps: transforming the rotating degrees of freedom and transforming the equations of motion. Reference 1 details the MBC operation. …


Green Power Marketing In The United States: A Status Report (2009 Data), Lori Bird, Jenny Sumner Sep 2010

Green Power Marketing In The United States: A Status Report (2009 Data), Lori Bird, Jenny Sumner

Publications (E)

This report documents green power marketing activities and trends in the United States. Aggregate green power sales data for all voluntary purchase markets across the United States are presented for 2009. The data presented in this report are based primarily on figures provided to NREL by utilities and independent renewable energy marketers. Because data cannot be obtained from all market participants, the estimates presented here likely represent an underestimate of the market size. Key trends identified in this year’s report include:
• In 2009, total retail sales of renewable energy in voluntary markets exceeded 30 million MWh, an increase of …


Wind Flow Modeling For Wind Energy Analysis Of The Nellis Dunes Area In Nevada, Upendra Rangegowda Aug 2010

Wind Flow Modeling For Wind Energy Analysis Of The Nellis Dunes Area In Nevada, Upendra Rangegowda

UNLV Theses, Dissertations, Professional Papers, and Capstones

A wind energy analysis of the Nellis Dunes area in Nevada was conducted. A DEM file which contains the elevation data was used to generate the surface model and to create a 3-D mesh of the region. Local meteorological tower data collected for a period of one year was used to generate the diagnostic initial wind fields. Upper level wind fields were created using a surface boundary layer technique along with linear interpolation of the tower level wind fields. The vertical components of the velocities were adjusted using the equation of continuity. Mass consistent 3-D wind fields were then calculated …


Further Developments On The Geothermal System Scoping Model, Mark Antkowiak, Rosemary Sargent, Jesse W. Geiger Jul 2010

Further Developments On The Geothermal System Scoping Model, Mark Antkowiak, Rosemary Sargent, Jesse W. Geiger

Publications (E)

The fields of well construction and engineering, power plant construction and engineering, and reservoir engineering often proceed independently of one another. Yet the subsystems of a geothermal plant with which each of these fields is concerned need to be integrated in order to create a viable geothermal power system and make enhanced (or engineered) geothermal systems (EGS) a technical and an economic reality. Furthermore, each of these subsystems need to be examined in the context of the overall power system to aid with plant construction, and–more salient to the U.S. Department of Energy–to help determine best investment of research dollars. …


A Life Cycle Cost Analysis Of Large-Scale Thermal Energy Storage Technologies For Buildings Using Combined Heat And Power, Kenneth Gaine, Aidan Duffy Jul 2010

A Life Cycle Cost Analysis Of Large-Scale Thermal Energy Storage Technologies For Buildings Using Combined Heat And Power, Kenneth Gaine, Aidan Duffy

Conference Papers

Buildings account for approximately 40% of energy consumption and greenhouse gas (GHG) emissions in developed economies, of which approximately 55% of building energy is used for heating and cooling. The reduction of building-related GHG emissions is a high international policy priority. For this reason and because there are many technical solutions for this, these polices should involve significant improvements in the uptake of small-scale energy efficient (EE) systems. However the widespread deployment of many technologies, must overcome a number of barriers, one of which is a temporal (diurnal or seasonal) mismatch between supply and demand. Costeffective thermal storage solutions have …


Hydrogen Separation Membranes, University Of North Dakota. Energy And Environmental Research Center May 2010

Hydrogen Separation Membranes, University Of North Dakota. Energy And Environmental Research Center

EERC Brochures and Fact Sheets

Technical brief describing hydrogen separation membranes and their potential to reduce cost of hydrogen production and CO2 separation. Outlines membrane types, commercially available membranes, and new technological developments. [This item is an outdated or superseded version and retained for historical purposes only. It may no longer reflect current information, policies, or practices.]


An Exploratory Study On Energy Consumption Of Energy Star And Non-Energy Star Homes, Prajakta Kulkarni May 2010

An Exploratory Study On Energy Consumption Of Energy Star And Non-Energy Star Homes, Prajakta Kulkarni

UNLV Theses, Dissertations, Professional Papers, and Capstones

The reduction of energy consumption is one of the economic necessities in the United States due to depleting energy sources in the world. The construction industry is stepping forward to reduce the energy consumption of buildings by efficient designs or by constructing buildings with energy efficient materials and features. In 1992, the U.S. Environmental Protection Agency (EPA) and Department of Energy (DOE) introduced the Energy Star Program to promote energy efficient products with the same or improved services. According to the EPA, Energy Star homes, which use these products, will consume 20 to 30 percent less energy than non-Energy Star …


Input-Output Analysis Of Irish Construction Sector Greenhouse Gas Emissions, Adolf Acquaye, Aidan Duffy Apr 2010

Input-Output Analysis Of Irish Construction Sector Greenhouse Gas Emissions, Adolf Acquaye, Aidan Duffy

Articles

Ireland is committed to limiting its greenhouse gas (GHG) emissions to 113% of 1990 levels over the period 2008-12 and to 84% of 2005 levels by 2020 under the Kyoto Agreement and the EU’s ’20 20’ by 2020 respectively. National policies have targeted many industry sectors but have failed to directly tackle GHG emissions associated with construction activity. This paper estimates energy and GHG emissions intensities of the Irish construction sector and subsectors and estimates its contribution to Irish national emissions. This information is used to identify and assess the impacts of policy measures which would result in a reduction …


Solar Power And The Electric Grid, Energy Analysis, Nrel Energy Analysis Mar 2010

Solar Power And The Electric Grid, Energy Analysis, Nrel Energy Analysis

Publications (E)

In today’s electricity generation system, different resources make different contributions to the electricity grid. This fact sheet illustrates the roles of distributed and centralized renewable energy technologies, particularly solar power, and how they will contribute to the future electricity system. The advantages of a diversified mix of power generation systems are highlighted.


Consortia Focused On Photovoltaic R&D, Manufacturing, And Testing: A Review Of Existing Models And Structures, Charlie Coggeshall, Robert M. Margolis Mar 2010

Consortia Focused On Photovoltaic R&D, Manufacturing, And Testing: A Review Of Existing Models And Structures, Charlie Coggeshall, Robert M. Margolis

Publications (E)

As the U.S. Department of Energy's (DOE's) Solar Energy Technologies Program prepares to initiate a new cost-shared research and development (R&D) effort on photovoltaic (PV) manufacturing, it is useful to review the experience to date with consortia focused on PV R&D, manufacturing, and testing. Information was gathered for this report by conducting interviews and accessing Web sites of 14 U.S. consortia and four European consortia, each with either a primary focus on or an emerging interest in PV technology R&D, manufacturing, or testing. Additional input was collected from several workshops held by the DOE and National Academy of Sciences (NAS) …


Barrier Coatings For Thin Film Solar Cells: Final Subcontract Report, L. C. Olsen Mar 2010

Barrier Coatings For Thin Film Solar Cells: Final Subcontract Report, L. C. Olsen

Publications (E)

This program has involved investigations of the stability of CdTe and copper-indium-gallium-diselenide (CIGS) solar cells under damp heat conditions and effects of barrier coatings. CdTe and CIGS cells were subjected to environmental conditions characterized by 60ºC and 90% relative humidity (60/90), and to some extent 85ºC and 85 % relative humidity (85/85). Barrier coating technology developed at PNNL for OLEDs was used to investigate approaches to encapsulation of the two types of thin film solar cells. Moisture barriers consisting of multi-layer coatings involving alternating layers of polymer and aluminum oxide were deposited directly onto the front surface of CIGS cells …


Slides: Energy Development Water Needs Assessment And Water Supply Alternatives And Analysis, Benjamin Harding Feb 2010

Slides: Energy Development Water Needs Assessment And Water Supply Alternatives And Analysis, Benjamin Harding

The Promise and Peril of Oil Shale Development (February 5)

Presenter: Benjamin Harding, Principal Engineer, AMEC Earth and Environmental

15 slides


Slides: Promise Or Peril: Shale Oil, Energy, And The Region, Chase Huntley Feb 2010

Slides: Promise Or Peril: Shale Oil, Energy, And The Region, Chase Huntley

The Promise and Peril of Oil Shale Development (February 5)

Presenter: Chase Huntley, Policy Adviser for Energy & Climate Change, The Wilderness Society

8 slides


Agenda: The Promise And Peril Of Oil Shale Development, University Of Colorado Boulder. Natural Resources Law Center Feb 2010

Agenda: The Promise And Peril Of Oil Shale Development, University Of Colorado Boulder. Natural Resources Law Center

The Promise and Peril of Oil Shale Development (February 5)

The largest known oil shale deposits in the world are in the Green River Formation, which covers portions of Colorado, Utah, and Wyoming. Fully one-half of the world’s oil shale lies within 150 miles of Grand Junction, Colorado, and about 80% of these reserves are on federal land. Estimates of recoverable reserves in the Green River Formation range from 500 billion to 1.53 trillion barrels. At present consumption rates, this is enough oil to satisfy 100% of U.S. demand for well over 100 years.

Development of oil shale could cause significant impacts on the Colorado Plateau. It would provide for …


Slides: Costs And Benefits Of Oil Shale Development, James T. Bartis Feb 2010

Slides: Costs And Benefits Of Oil Shale Development, James T. Bartis

The Promise and Peril of Oil Shale Development (February 5)

Presenter: James T. Bartis, Senior Policy Researcher, Rand Corporation

21 slides


Slides: The Promise And Peril Of Oil Shale: Federal Law And Policy, David Bernhardt Feb 2010

Slides: The Promise And Peril Of Oil Shale: Federal Law And Policy, David Bernhardt

The Promise and Peril of Oil Shale Development (February 5)

Presenter: David Bernhardt, Brownstein Hyatt Farber Schreck, Denver, CO

13 slides


Slides: Oil Shale Water Needs, State Water Planning And The Colorado River Compact, Daniel R. Birch Feb 2010

Slides: Oil Shale Water Needs, State Water Planning And The Colorado River Compact, Daniel R. Birch

The Promise and Peril of Oil Shale Development (February 5)

Presenter: Daniel R. Birch, Deputy General Manager & Chief Engineer, Colorado River District

17 slides


Slides: The Logistics And Energy Needs Of Oil Shale Extraction, Alan K. Burnham Feb 2010

Slides: The Logistics And Energy Needs Of Oil Shale Extraction, Alan K. Burnham

The Promise and Peril of Oil Shale Development (February 5)

Presenter: Dr. Alan K. Burnham, Chief Technology Officer, American Shale Oil, LLC

10 slides


Slides: Water For Oil (Shale)?, Bart Miller Feb 2010

Slides: Water For Oil (Shale)?, Bart Miller

The Promise and Peril of Oil Shale Development (February 5)

Presenter: Bart Miller, Water Program Director, Western Resource Advocates

10 slides


Slides: The Peril Of Energy Usage, Mike Tupper Feb 2010

Slides: The Peril Of Energy Usage, Mike Tupper

The Promise and Peril of Oil Shale Development (February 5)

Presenter: Mike Tupper, Executive Vice President, Composite Technology Development, Inc.

9 slides


Slides: The History Of Oil Shale Development And What It Means For The Future, Patty Limerick Feb 2010

Slides: The History Of Oil Shale Development And What It Means For The Future, Patty Limerick

The Promise and Peril of Oil Shale Development (February 5)

Presenter: Patty Limerick, Center of the American West, University of Colorado at Boulder

35 slides


Slides: The Elusive Bonanza, Randy Udall Feb 2010

Slides: The Elusive Bonanza, Randy Udall

The Promise and Peril of Oil Shale Development (February 5)

Presenter: Randy Udall, Co-founder, Association for the Study of Peak Oil-USA

62 slides


Slides: Impacts Of Oil Shale On Carbon Emissions, Jeremy Boak Feb 2010

Slides: Impacts Of Oil Shale On Carbon Emissions, Jeremy Boak

The Promise and Peril of Oil Shale Development (February 5)

Presenter: Dr. Jeremy Boak, Center for Oil Shale Technology & Research, Colorado School of Mines

43 slides


Slides: Costs And Benefits Of Development: An Industry Perspective, Glenn Vawter Feb 2010

Slides: Costs And Benefits Of Development: An Industry Perspective, Glenn Vawter

The Promise and Peril of Oil Shale Development (February 5)

Presenter: Glenn Vawter, Executive Director, National Oil Shale Association

12 slides


The Value Of Concentrating Solar Power And Thermal Energy Storage, Ramteen Sioshansi, Paul Denholm Feb 2010

The Value Of Concentrating Solar Power And Thermal Energy Storage, Ramteen Sioshansi, Paul Denholm

Publications (E)

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 the optimization period, price and solar forecasting, ancillary service sales, capacity value and dry …


Doe Request For Information (Rfi) De-Foa-0000153 Pv Manufacturing Initiative: Summary Report, National Renewable Energy Laboratory Feb 2010

Doe Request For Information (Rfi) De-Foa-0000153 Pv Manufacturing Initiative: Summary Report, National Renewable Energy Laboratory

Publications (E)

Clean Cities hosts a collection of tools on the exploring concepts for a “PV Manufacturing Initiative” to facilitate the development of a strong photovoltaic (PV) manufacturing industry in the United States. As an integral part this effort, and to inform the creation of a new funding opportunity in this area, DOE sought feedback from the PV industry.

This document summarizes the results of the PV Manufacturing Request for Information (RFI), DE-FOA-0000153. (See Attachment 1.) The RFI was posted on http://www.grants.gov on 4 September 2009 and the NREL Web site on 9 September 2009. Respondents were asked to submit RFI inputs …


Algae And Biodiesel: Patenting Energized As Green Goes Commercial, Matthew R. Priess, Stanley P. Kowalski Jan 2010

Algae And Biodiesel: Patenting Energized As Green Goes Commercial, Matthew R. Priess, Stanley P. Kowalski

Law Faculty Scholarship

In the twenty-first century, predominant dependence on fossil fuels as energy resources will not be sustainable. Developing and commercializing green energy innovations will be an essential component of the transition to a more diversified energy economy. Algal biodiesel is one of the most promising green fuels because of its potential as a renewable and sustainable fuel source without displacing food crops. Algal biodiesel research and development are necessary early steps towards a transition to a green energy economy. The strategic use of strong patent portfolios will drive this by attracting investment, incentivizing innovation and accelerating commercialization. Whereas algal biodiesel research …