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1

Development of an Advanced, Low-Cost parabolic Trough Collector...  

Office of Environmental Management (EM)

Development of an Advanced, Low-Cost parabolic Trough Collector for Baseload Operation Development of an Advanced, Low-Cost parabolic Trough Collector for Baseload Operation This...

2

Parabolic Trough Solar Technology  

Science Journals Connector (OSTI)

Parabolic trough (solar) collectors (PTCs) are technical devices to collect the energy in form of solar radiation and convert it typically into thermal energy at temperature ranges of 150–500°C at industrial s...

Dr.-Ing. Eckhard Lüpfert

2013-01-01T23:59:59.000Z

3

Parabolic Trough Solar Technology  

Science Journals Connector (OSTI)

Parabolic trough (solar) collectors (PTCs) are technical devices to collect the energy in form of solar radiation and convert it typically into thermal energy at temperature ranges of 150–500°C at industrial s...

Dr.-Ing. Eckhard Lüpfert

2012-01-01T23:59:59.000Z

4

NREL: TroughNet - Parabolic Trough Workshops  

NLE Websites -- All DOE Office Websites (Extended Search)

Parabolic Trough Workshops Parabolic Trough Workshops Here you'll find information about workshops and forums concerning parabolic trough technology and concentrating solar power. Also, see upcoming events on concentrating solar power. Past Workshops and Forums 2007 Parabolic Trough Technology Workshop March 8-9, 2007 Golden, CO 2007 Solar Power Tower, Dish Stirling and Linear Fresnel Technologies Workshop March 7, 2007 Golden, CO 2006 Parabolic Trough Technology Workshop February 14-16, 2006 Incline Village, NV 2004 Solar Thermal Electric International Project Development Forum July 13, 2004 Portland, OR 2003 Parabolic Trough Thermal Energy Storage Workshop February 20-21, 2003 Golden, CO 2001 Solar Energy Forum: The Power to Choose April 21-25, 2001 Washington, D.C. 2000 Parabolic Trough Technology Workshop

5

NREL: TroughNet - Parabolic Trough FAQs  

NLE Websites -- All DOE Office Websites (Extended Search)

Parabolic Trough FAQs Parabolic Trough FAQs Find answers to frequently asked questions about parabolic trough solar technology. Question topics include: Central station solar benefits Economic and environmental benefits Electricity cost Installation and operation Land use Large-scale vs. distributed power Past construction decline Photovoltaics comparison Power plant cost Power plant siting Technology potential Water use Some of the following documents are available as Adobe Acrobat PDFs. How much does a parabolic trough power plant cost? The cost of a parabolic trough power plant depends on many factors such as plant size, whether thermal energy storage is included, and whether the solar field has been enlarged to increase the annual plant capacity factor. Based on these considerations the current capital cost for large

6

Advanced Low-Cost Receivers for Parabolic Troughs | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Receivers for Parabolic Troughs Advanced Low-Cost Receivers for Parabolic Troughs This fact sheet describes an advanced, low-cost receiver project for parabolic troughs, awarded...

7

NREL: TroughNet - Parabolic Trough Technology Research and Development  

NLE Websites -- All DOE Office Websites (Extended Search)

and its R&D history. R&D History Since Luz built the first commercial parabolic trough power plant in 1984 (SEGS I), parabolic trough technology has been constantly evolving and...

8

NREL: TroughNet - Parabolic Trough Power Plant System Technology  

NLE Websites -- All DOE Office Websites (Extended Search)

Parabolic Trough Power Plant System Technology Parabolic Trough Power Plant System Technology A parabolic trough solar power plant uses a large field of collectors to supply thermal energy to a conventional power plant. Because they use conventional power cycles, parabolic trough power plants can be hybridized-other fuels can be used to back up the solar power. Like all power cycles, trough power plants also need a cooling system to transfer waste heat to the environment. Parabolic trough power plant technologies include: Direct steam generation Fossil-fired (hybrid) backup Operation and maintenance Power cycles Steam Rankine Organic Rankine Combined Wet and dry cooling Power Cycles A photo of an aerial view of a power plant in the middle of a solar field with rows and rows of parabolic troughs tracking. The cooling towers can be seen with the water plume rising into the air. The white water tanks can be seen in the background.

9

NREL: TroughNet - Parabolic Trough Power Plant Market, Economic...  

NLE Websites -- All DOE Office Websites (Extended Search)

factors for current parabolic trough systems under development range from 25% for solar only plants to greater than 40% for plants with thermal storage. Such plants provide...

10

A New Generation of Parabolic Trough Technology  

Office of Environmental Management (EM)

Trough Technology Innovat ive t echnology solut ions f or su st a in a b ilit y ABENGOA SOLAR Parabolic Trough Collector Technology Abengoa Solar Cont ent 2 Solana Solar Power...

11

NREL: TroughNet - Parabolic Trough Technology Overview  

NLE Websites -- All DOE Office Websites (Extended Search)

Technology Overview Technology Overview Parabolic trough solar power technology offers an environmentally sound and increasingly cost-effective energy source. Here you'll find overviews about the following parabolic trough power plant technologies: Solar Field Collector balance of system Concentrator structure Mirrors Receivers Thermal Energy Storage Molten-salt heat transfer fluid Storage media Storage systems Power Plant Systems Direct steam generation Fossil-fired hybrid backup Power cycles Wet and dry cooling Operation and maintenance For more detailed, technical information, see our publications on parabolic trough power plant technology. Printable Version TroughNet Home Technologies Solar Field Thermal Energy Storage Power Plant Systems Market & Economic Assessment Research & Development

12

NREL: TroughNet - Parabolic Trough System and Component Testing  

NLE Websites -- All DOE Office Websites (Extended Search)

System and Component Testing System and Component Testing Here you'll find information about parabolic trough system and components testing, as well facilities and laboratories used for testing. Tests include those for: Concentrator thermal efficiency Receiver thermal performance Mirror contour and collector alignment Mirror reflectivity and durability Some of the following documents are available as Adobe Acrobat PDFs. Download Adobe Reader. Concentrator Thermal Efficiency Testing Researchers and industry use the following facilities for testing parabolic trough collectors. AZTRAK Rotating Platform At Sandia National Laboratories' National Solar Thermal Test Facility (NSTTF), the AZTRAK rotating platform has been used to test several parabolic trough modules and receivers. Initially, researchers tested a

13

Baseload Solar Power for California? Ammonia-based Solar Energy Storage Using Trough Concentrators  

E-Print Network (OSTI)

Baseload Solar Power for California? Ammonia-based Solar Energy Storage Using Trough Concentrators to eventually optimise the reactor geometry for ammonia-based solar energy storage with troughs, which.1. Storing Solar Energy with Ammonia H2 / N2 gas liquid NH3 Heat Exchangers Power Generation (Steam Cycle

14

NREL: TroughNet - 2007 Parabolic Trough Technology Workshop  

NLE Websites -- All DOE Office Websites (Extended Search)

2007 Parabolic Trough Technology Workshop 2007 Parabolic Trough Technology Workshop NREL hosted a parabolic trough technology workshop on March 8-9, 2007, in Golden, Colorado. It had three goals: Exchanging technical information Collaborating on SolarPaces projects: receiver testing and dry cooling Gathering industry input on laboratory R&D directions. The workshop featured presentations on the following parabolic trough power plant topics: Current and future market vision Project developments Solar resource assessment Technology trends Molten-salt heat transfer fluids Direct steam generation Advanced tools and testing capabilities Researchers also presented a poster session on laboratory capabilities. Note: if a presentation or poster isn't listed below, NREL hasn't yet received permission or approval to post it.

15

Definition: Parabolic trough | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Parabolic trough Jump to: navigation, search Dictionary.png Parabolic trough A solar energy conversion device that uses a trough covered with a highly reflective surface to focus sunlight onto a linear absorber containing a working fluid that can be used to spin a turbine for electricity generation; with a single-axis sun-tracking system, the configuration of a parabolic trough can track the sun from east to west during the day.[1][2][3] View on Wikipedia Wikipedia Definition A parabolic trough is a type of solar thermal collector that is straight in one dimension and curved as a parabola in the other two, lined with a polished metal mirror. The energy of sunlight which enters the

16

Project Profile: Next-Generation Parabolic Trough Collectors...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Trough Collectors and Components for CSP Applications Project Profile: Next-Generation Parabolic Trough Collectors and Components for CSP Applications Abengoa logo Abengoa...

17

Advanced Low-Cost Receivers for Parabolic Troughs | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Advanced Low-Cost Receivers for Parabolic Troughs Advanced Low-Cost Receivers for Parabolic Troughs This presentation was delivered at the SunShot Concentrating Solar Power (CSP)...

18

Parabolic Trough Organic Rankine Cycle Power Plant  

SciTech Connect

Arizona Public Service (APS) is required to generate a portion of its electricity from solar resources in order to satisfy its obligation under the Arizona Environmental Portfolio Standard (EPS). In recent years, APS has installed and operates over 4.5 MWe of fixed, tracking, and concentrating photovoltaic systems to help meet the solar portion of this obligation and to develop an understanding of which solar technologies provide the best cost and performance to meet utility needs. During FY04, APS began construction of a 1-MWe parabolic trough concentrating solar power plant. This plant represents the first parabolic trough plant to begin construction since 1991. The plant will also be the first commercial deployment of the Solargenix parabolic trough collector technology developed under contract to the National Renewable Energy Laboratory (NREL). The plant will use an organic Rankine cycle (ORC) power plant, provided by Ormat. The ORC power plant is much simpler than a conventional steam Rankine cycle power plant and allows unattended operation of the facility.

Canada, S.; Cohen, G.; Cable, R.; Brosseau, D.; Price, H.

2005-01-01T23:59:59.000Z

19

Parabolic Trough Solar Thermal Electric Power Plants (Fact Sheet)  

SciTech Connect

This fact sheet provides an overview of the potential for parabolic trough solar thermal electric power plants, especially in the Southwestern U.S.

Not Available

2006-07-01T23:59:59.000Z

20

Advanced Low-Cost Recievers for Parabolic Troughs  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PROJECT OBJECTIVES KEY RESULTS AND OUTCOMES NEXT MILESTONES 1. Burkholder F, Kutscher C. Heat Loss Testing of Schott's 2008 PTR70 Parabolic Trough Receiver (NRELTP-550-45633):...

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Advanced Low-Cost Receivers for Parabolic Troughs  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PROJECT OBJECTIVES KEY RESULTS AND OUTCOMES NEXT MILESTONES 1. Burkholder F, Kutscher C. Heat Loss Testing of Schott's 2008 PTR70 Parabolic Trough Receiver (NRELTP-550-45633):...

22

Parabolic-Trough Technology Roadmap | Open Energy Information  

Open Energy Info (EERE)

Parabolic-Trough Technology Roadmap Parabolic-Trough Technology Roadmap Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Parabolic-Trough Technology Roadmap Agency/Company /Organization: National Renewable Energy Laboratory, United States Department of Energy Sector: Energy Focus Area: Renewable Energy, Solar Topics: Technology characterizations Resource Type: Guide/manual Website: www.nrel.gov/csp/troughnet/pdfs/24748.pdf References: Parabolic-Trough Technology Roadmap[1] Overview "The working group reviewed the status of today's trough technologies, evaluated existing markets, identified potential future market opportunities, and developed a roadmap toward its vision of the industry's potential-including critical advancements needed over the long term to significantly reduce costs while further increasing

23

Guidelines for reporting parabolic trough solar electric system performance  

SciTech Connect

The purpose of this activity is to develop a generic methodology which can be used to track and compare the performance of parabolic trough power plants. The approach needs to be general enough to work for all existing and future parabolic trough plant designs, provide meaningful comparisons of year to year performance, and allow for comparisons between dissimilar plant designs. The approach presented here uses the net annual system efficiency as the primary metric for evaluating the performance of parabolic trough power plants. However, given the complex nature of large parabolic trough plants, the net annual system efficiency by itself does not adequately characterize the performance of the plant. The approach taken here is to define a number of additional performance metrics which enable a more comprehensive understanding of overall plant performance.

Price, H.W.

1997-06-01T23:59:59.000Z

24

Optimal Heat Collection Element Shapes for Parabolic Trough Concentrators  

SciTech Connect

For nearly 150 years, the cross section of the heat collection tubes used at the focus of parabolic trough solar concentrators has been circular. This type of tube is obviously simple and easily fabricated, but it is not optimal. It is shown in this article that the optimal shape, assuming a perfect parabolic figure for the concentrating mirror, is instead oblong, and is approximately given by a pair of facing parabolic segments.

Bennett, C

2007-11-15T23:59:59.000Z

25

Parabolic-Trough Solar Water Heating--FTA, 022798m FTA trough  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Parabolic-trough solar water heating is Parabolic-trough solar water heating is a well-proven technology that directly sub- stitutes renewable energy for conventional energy in water heating. Parabolic-trough collectors can also drive absorption cooling systems or other equipment that runs off a thermal load. There is considerable potential for using these technologies at Federal facil- ities in the Southwestern United States or other areas with high direct-beam solar radi- ation. Facilities such as jails, hospitals, and barracks that consistently use large volumes of hot water are particularly good candi- dates. Use of parabolic-trough systems helps Federal facilities comply with Executive Order 12902's directive to reduce energy use by 30% by 2005 and advance other efforts to get the Federal government to set a good

26

Status of APS 1-Mwe Parabolic Trough Project  

SciTech Connect

Arizona Public Service (APS) is currently installing new power facilities to generate a portion of its electricity from solar resources that will satisfy its obligation under the Arizona Environmental Portfolio Standard (EPS). During FY04, APS began construction on a 1-MWe parabolic trough concentrating solar power plant. This plant represents the first parabolic trough plant to begin construction since 1991. Site preparation and construction activities continued throughout much of FY05, and startup activities are planned for Fall 2005 (with completion early in FY06). The plant will be the first commercial deployment of the Solargenix parabolic trough collector technology developed under contract to the National Renewable Energy Laboratory. The plant will use an organic Rankine cycle (ORC) power plant, provided by Ormat. The ORC power plant is much simpler than the conventional steam Rankine cycle plant and allows unattended operation of the facility.

Canada, S.; Brosseau, D.; Kolb, G.; Moore, L.; Cable, R.; Price, H.

2005-11-01T23:59:59.000Z

27

Federal technology alert. Parabolic-trough solar water heating  

SciTech Connect

Parabolic-trough solar water heating is a well-proven renewable energy technology with considerable potential for application at Federal facilities. For the US, parabolic-trough water-heating systems are most cost effective in the Southwest where direct solar radiation is high. Jails, hospitals, barracks, and other facilities that consistently use large volumes of hot water are particularly good candidates, as are facilities with central plants for district heating. As with any renewable energy or energy efficiency technology requiring significant initial capital investment, the primary condition that will make a parabolic-trough system economically viable is if it is replacing expensive conventional water heating. In combination with absorption cooling systems, parabolic-trough collectors can also be used for air-conditioning. Industrial Solar Technology (IST) of Golden, Colorado, is the sole current manufacturer of parabolic-trough solar water heating systems. IST has an Indefinite Delivery/Indefinite Quantity (IDIQ) contract with the Federal Energy Management Program (FEMP) of the US Department of Energy (DOE) to finance and install parabolic-trough solar water heating on an Energy Savings Performance Contract (ESPC) basis for any Federal facility that requests it and for which it proves viable. For an ESPC project, the facility does not pay for design, capital equipment, or installation. Instead, it pays only for guaranteed energy savings. Preparing and implementing delivery or task orders against the IDIQ is much simpler than the standard procurement process. This Federal Technology Alert (FTA) of the New Technology Demonstration Program is one of a series of guides to renewable energy and new energy-efficient technologies.

NONE

1998-04-01T23:59:59.000Z

28

Advanced Low-Cost Receivers for Parabolic Troughs - FY13 Q2 ...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Advanced Low-Cost Receivers for Parabolic Troughs - FY13 Q2 Advanced Low-Cost Receivers for Parabolic Troughs - FY13 Q2 This document summarizes the progress of this Norwich...

29

Parabolic trough solar power for competitive U.S. markets  

SciTech Connect

Nine parabolic trough power plants located in the California Mojave Desert represent the only commercial development of large-scale solar power plants to date. Although all nine plants continue to operate today, no new solar power plants have been completed since 190. Over the last several years, the parabolic trough industry has focused much of its efforts on international market opportunities. Although the power market in developing countries appears to offer a number of opportunities for parabolic trough technologies due to high growth and the availability of special financial incentives for renewables, these markets are also plagued with many difficulties for developers. In recent years, there has been some renewed interest in the U.S. domestic power market as a results of an emerging green market and green pricing incentives. Unfortunately, many of these market opportunities and incentives focus on smaller, more modular technologies (such as photovoltaics or wind power), and as a result they tend to exclude or are of minimum long-term benefit to large-scale concentrating solar power technologies. This paper looks at what is necessary for large-scale parabolic trough solar power plants to compete with state-of-the-art fossil power technology in a competitive US power market.

Price, H.W.; Kistner, R.

1999-07-01T23:59:59.000Z

30

NREL: TroughNet - Parabolic Trough Technology Models and Software Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Technology Models and Software Tools Technology Models and Software Tools Here you'll find information about models and software tools used to analyze parabolic trough power plant technology. They include: Annual Simulation Solar Advisor Model TRNSYS Other Analysis SolTRACE Receiver Model DView JEDI Annual Simulation Software Because solar power plants rely on an intermittent fuel supply-the sun-it is necessary to model the plant's performance on an hourly (or finer resolution) basis to understand and predict its annual performance. A number of performance and economics models are available for evaluating parabolic trough solar technologies. Industry also has developed a number of proprietary models for evaluating parabolic trough plants. Solar Advisor Model NREL, partnering with the U.S. Department of Energy's Solar Energy

31

Absorber Alignment Measurement Tool for Solar Parabolic Trough Collectors: Preprint  

SciTech Connect

As we pursue efforts to lower the capital and installation costs of parabolic trough solar collectors, it is essential to maintain high optical performance. While there are many optical tools available to measure the reflector slope errors of parabolic trough solar collectors, there are few tools to measure the absorber alignment. A new method is presented here to measure the absorber alignment in two dimensions to within 0.5 cm. The absorber alignment is measured using a digital camera and four photogrammetric targets. Physical contact with the receiver absorber or glass is not necessary. The alignment of the absorber is measured along its full length so that sagging of the absorber can be quantified with this technique. The resulting absorber alignment measurement provides critical information required to accurately determine the intercept factor of a collector.

Stynes, J. K.; Ihas, B.

2012-04-01T23:59:59.000Z

32

Performance contracting for parabolic trough solar thermal systems  

SciTech Connect

Several applications of solar energy have proven viable in the energy marketplace, due to competitive technology and economic performance. One example is the parabolic trough solar collectors, which use focused solar energy to maximize efficiency and reduce material use in construction. Technical improvements are complemented by new business practices to make parabolic trough solar thermal systems technically and economically viable in an ever widening range of applications. Technical developments in materials and fabrication techniques reduce production cost and expand applications from swimming pool heating and service hot water, to higher-temperature applications such as absorption cooling and process steam. Simultaneously, new financing mechanisms such as a recently awarded US Department of Energy (DOE) Federal Energy Management Program (FEMP) indefinite quantity Energy Savings Performance Contract (Super ESPC) facilitate and streamline implementation of the technology in federal facilities such as prisons and military bases.

Brown, H.; Hewett, R.; Walker, A. [National Renewable Energy Lab., Golden, CO (United States); Gee, R.; May, K. [Industrial Solar Technology, Golden, CO (United States)

1997-12-31T23:59:59.000Z

33

Parabolic Trough Solar Power Plant Simulation Model: Preprint  

SciTech Connect

As interest for clean renewable electric power technologies grows, a number of parabolic trough power plants of various configurations are being considered for deployment around the globe. It is essential that plant designs be optimized for each specific application. The optimum design must consider the capital cost, operations and maintenance cost, annual generation, financial requirements, and time-of-use value of the power generated. Developers require the tools for evaluating tradeoffs between these various project elements. This paper provides an overview of a computer model that is being used by scientists and developers to evaluate the tradeoff between cost, performance, and economic parameters for parabolic trough solar power plant technologies. An example is included that shows how this model has been used for a thermal storage design optimization.

Price, H.

2003-01-01T23:59:59.000Z

34

A Linear Parabolic Trough Solar Collector Performance Model  

E-Print Network (OSTI)

: 1 bar (winter) Pressure in solar collection loop: 10 bar (Summer), 5 bar (winter) Pressure in main chilled water loop : 1 bar (summer) TIC TIC TIC TIC Space Thermostat May 18,06 Parabolic Solar Trough Collector: 52.44 m^2 / 4 modules... & winter) Chilled/Heat Water Storage Current Existing Future Installation Current Installation TIC TIC EIC Temperature indicator controller Energy indicator controller Fig. 1 IW solar heating and cooling system 1.3 EES Model In order to understand...

Qu, M.; Archer, D.; Masson, S.

2006-01-01T23:59:59.000Z

35

NREL: TroughNet - Parabolic Trough Technology Solar Resource Data and Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Solar Resource Data and Tools Solar Resource Data and Tools Here you'll find resources on solar radiation data and tools for siting parabolic trough power plants. This includes solar radiation data for power plants in the United States and worldwide. You'll also find resources for direct solar radiation instrumentation. For an overview on solar resource terms and direct beam radiation used for concentrating solar power technologies, see NREL's Shining On Web site. U.S. Solar Radiation Resource Data The following resources include maps, and hourly metrological and solar resource data for parabolic trough power plants sites in the United States. NREL Concentrating Solar Power Resource Maps Features direct normal solar radiation maps of the southwestern United States, including state maps for Arizona, California, Colorado, New Mexico,

36

Video Scanning Hartmann Optical Testing of State-of-the-Art Parabolic Trough Concentrators: Preprint  

SciTech Connect

This paper describes the Video Scanning Hartmann Optical Test System (VSHOT) used to optically test parabolic trough designs by both Solargenix and Industrial Solar Technology.

Wendelin, T.; May, K.; Gee, R.

2006-06-01T23:59:59.000Z

37

Two-tank indirect thermal storage designs for solar parabolic trough power plants.  

E-Print Network (OSTI)

??The performance of a solar thermal parabolic trough plant with thermal storage is dependent upon the arrangement of the heat exchangers that ultimately transfer energy… (more)

Kopp, Joseph E.

2009-01-01T23:59:59.000Z

38

Test results, Industrial Solar Technology parabolic trough solar collector  

SciTech Connect

Sandia National Laboratories and Industrial Solar Technology are cost-sharing development of advanced parabolic trough technology. As part of this effort, several configurations of an IST solar collector were tested to determine the collector efficiency and thermal losses with black chrome and black nickel receiver selective coatings, combined with aluminized film and silver film reflectors, using standard Pyrex{reg_sign} and anti-reflective coated Pyrex{reg_sign} glass receiver envelopes. The development effort has been successful, producing an advanced collector with 77% optical efficiency, using silver-film reflectors, a black nickel receiver coating, and a solgel anti-reflective glass receiver envelope. For each receiver configuration, performance equations were empirically derived relating collector efficiency and thermal losses to the operating temperature. Finally, equations were derived showing collector performance as a function of input insolation value, incident angle, and operating temperature.

Dudley, V.E. [EG and G MSI, Albuquerque, NM (United States); Evans, L.R.; Matthews, C.W. [Sandia National Labs., Albuquerque, NM (United States)

1995-11-01T23:59:59.000Z

39

Heat-Loss Testing of Solel's UVAC3 Parabolic Trough Receiver  

SciTech Connect

For heat-loss testing on two Solel UVAC3 parabolic trough receivers, a correlation developed predicts receiver heat loss as a function of the difference between avg absorber and ambient temperatures.

Burkholder, F.; Kutscher, C.

2008-01-01T23:59:59.000Z

40

Development of an Advanced, Low-Cost parabolic Trough Collector for Baseload Operation  

Energy.gov (U.S. Department of Energy (DOE))

This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 23–25, 2013 near Phoenix, Arizona.

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Gases as Working Fluid in Parabolic Trough CSP Plants  

Science Journals Connector (OSTI)

Abstract The energetic dimension of actual economy is massively oriented towards the use of fossil fuels: they cover a share of 87% of the energy needs and the trend of this share is increasing, in spite of the commitments adopted by almost all the Countries in the World. Most crucial concern is CO2 levels in the atmosphere and the positive feedback between Earth's temperature increase and carbon. Actual technologies which make use of renewable sources seem to be not fully suitable to invert this continuous increase of fossil fuels. Concentrated Solar Power plants (CSP) have had, recently, a huge attention as a technology able to give, in the mean future, a strong contribution to the electrical energy generation. CSP technology has an intrinsic superiority with respect to the other renewable plants but actual plants suffer of many drawbacks which slow down a massive diffusion: these aspects increase costs and do not insure the reliability levels required to make the investments profitable. Gas as heat transfer fluid inside solar receiver in a CSP Parabolic Trough (PT) type plant is discussed in this paper: this would simplify actual technology in the conversion section, downstream the solar energy collecting phase. The use of gases calls for a new conversion section discussed in this paper based on a direct expansion in gas turbine plants. The success of this concept is related to the possibility to increase the fluid (gas) temperature above the actual operating maximum values. The paper discusses the performances of a new gas cycle, the performances of actual receivers when fed with gas and introduces and discusses an optimization design parameter which allows a cost decrease and industrial reliability improvement.

Roberto Cipollone; Andrea Cinocca; Angelo Gualtieri

2013-01-01T23:59:59.000Z

42

Nexant Parabolic Trough Solar Power Plant Systems Analysis; Task 3: Multiple Plants at a Common Location, 20 January 2005 - 31 December 2005  

SciTech Connect

Subcontract report by Nexant, Inc., regarding a system analysis of multiple solar parabolic trough plants at a common location.

Kelly, B.

2006-07-01T23:59:59.000Z

43

Reducing the Cost of Energy from Parabolic Trough Solar Power Plants: Preprint  

SciTech Connect

Parabolic trough solar technology is the most proven and lowest cost large-scale solar power technology available today, primarily because of the nine large commercial-scale solar power plants that are operating in the California Mojave Desert. However, no new plants have been built during the past ten years because the cost of power from these plants is more expensive than power from conventional fossil fuel power plants. This paper reviews the current cost of energy and the potential for reducing the cost of energy from parabolic trough solar power plant technology based on the latest technological advancements and projected improvements from industry and sponsored R&D. The paper also looks at the impact of project financing and incentives on the cost of energy.

Price, H.; Kearney, D.

2003-01-01T23:59:59.000Z

44

Research on the compensation of the end loss effect for parabolic trough solar collectors  

Science Journals Connector (OSTI)

Abstract In this paper, an optical analysis on the end loss effect of parabolic trough solar collector (PTC) with horizontal north–south axis (PTC-HNSA) is performed, and a method to compensate its end loss effect is presented. The calculation formulae for the optical end loss ratio and the increased optical efficiency (the optical collection efficiency increment of PTC system after this compensation method is used) are derived; the daily optical end loss ratio, yearly optical end loss ratio, daily increased optical efficiency and yearly increased optical efficiency in different latitudes are calculated; the variation of optical end loss ratio and increased optical efficiency with trough’s length and latitude angles are analyzed and discussed. It is indicated through the analyses that this compensation method is very applicable for regions with the latitude over 25° (especially over 30°) and short trough collectors. In order to verify the feasibility of the compensation method, a five-meter PTC-HNSA experimental system was built. The increased thermal efficiency of the experimental system is measured, and the result that the experimental value (increased thermal efficiency) substantially agreed with the theoretical value (increased optical efficiency) is gained. All these works can offer some valuable references to the further study on high-efficiency trough solar concentrating systems.

Chengmu Xu; Zhiping Chen; Ming Li; Peng Zhang; Xu Ji; Xi Luo; Jiangtao Liu

2014-01-01T23:59:59.000Z

45

Nexant Parabolic Trough Solar Power Plant Systems Analysis; Task 2: Comparison of Wet and Dry Rankine Cycle Heat Rejection, 20 January 2005 - 31 December 2005  

SciTech Connect

Subcontract report by Nexant, Inc., regarding a system analysis comparing solar parabolic trough plants with wet and dry rankine cycle heat rejection.

Kelly, B.

2006-07-01T23:59:59.000Z

46

Current and future costs for parabolic trough and power tower systems in the US market.  

SciTech Connect

NREL's Solar Advisor Model (SAM) is employed to estimate the current and future costs for parabolic trough and molten salt power towers in the US market. Future troughs are assumed to achieve higher field temperatures via the successful deployment of low melting-point, molten-salt heat transfer fluids by 2015-2020. Similarly, it is assumed that molten salt power towers are successfully deployed at 100MW scale over the same time period, increasing to 200MW by 2025. The levelized cost of electricity for both technologies is predicted to drop below 11 cents/kWh (assuming a 10% investment tax credit and other financial inputs outlined in the paper), making the technologies competitive in the marketplace as benchmarked by the California MPR. Both technologies can be deployed with large amounts of thermal energy storage, yielding capacity factors as high as 65% while maintaining an optimum LCOE.

Turchi, Craig (National Renewable Energy Laboratory, Golden, CO); Kolb, Gregory J.; Mehos, Mark Steven (National Renewable Energy Laboratory, Golden, CO); Ho, Clifford Kuofei

2010-08-01T23:59:59.000Z

47

Modeling and co-simulation of a parabolic trough solar plant for industrial process heat  

Science Journals Connector (OSTI)

In the present paper a tri-dimensional non-linear dynamic thermohydraulic model of a parabolic trough collector was developed in the high-level acausal object-oriented language Modelica and coupled to a solar industrial process heat plant modeled in TRNSYS. The integration is performed in an innovative co-simulation environment based on the TLK interconnect software connector middleware. A discrete Monte Carlo ray-tracing model was developed in SolTrace to compute the solar radiation heterogeneous local concentration ratio in the parabolic trough collector absorber outer surface. The obtained results show that the efficiency predicted by the model agrees well with experimental data with a root mean square error of 1.2%. The dynamic performance was validated with experimental data from the Acurex solar field, located at the Plataforma Solar de Almeria, South-East Spain, and presents a good agreement. An optimization of the IST collector mass flow rate was performed based on the minimization of an energy loss cost function showing an optimal mass flow rate of 0.22 kg/s m2. A parametric analysis showed the influence on collector efficiency of several design properties, such as the absorber emittance and absorptance. Different parabolic trough solar field model structures were compared showing that, from a thermal point of view, the one-dimensional model performs close to the bi-dimensional. Co-simulations conducted on a reference industrial process heat scenario on a South European climate show an annual solar fraction of 67% for a solar plant consisting on a solar field of 1000 m2, with thermal energy storage, coupled to a continuous industrial thermal demand of 100 kW.

R. Silva; M. Pérez; A. Fernández-Garcia

2013-01-01T23:59:59.000Z

48

Studies on performance characteristics of a solar parabolic trough concentrator with a variable area absorber  

Science Journals Connector (OSTI)

The design of a suitable absorber that incorporates an efficient heat transfer augmentation technique is one of the vital parameters that affect the performance of a solar parabolic trough concentrator (PTC). The variable area absorber discussed in this paper provides appreciable augmentation in heat transfer without increasing the pressure drop materially and thus helps in enhancing the performance efficiency of PTC significantly. A computer aided parametric study of this phenomena has been dealt in this paper. The performance of PTC of proposed design has been analysed mathematically and a rigorous simulation model has been developed. The mathematical analysis has been substantiated by elaborate experimental data.

C.M. Narayanan

2014-01-01T23:59:59.000Z

49

Efficiency of a parabolic trough collector as a water heater system in Yucatán, Mexico  

Science Journals Connector (OSTI)

The performance of a parabolic trough collector (PTC) manufactured in Merida Yucatán was evaluated under the ANSI/ASHRAE 93-1986 standard. The water heating system for testing with a constant flow limited to a maximum temperature of 55 °C was built; thus the tests were at low temperatures. Using water as working fluid it was found that the maximum efficiency of the collector was 5.43% with a flow rate of 0.022?kg/s at a direct solar irradiance with incidence angle 0°. The evaluation methodology and design of the system for testing the collector is reported in this paper.

N. Rosado Hau; M. A. Escalante Soberanis

2011-01-01T23:59:59.000Z

50

Development of Molten-Salt Heat Trasfer Fluid Technology for Parabolic Trough Solar Power Plants  

Energy.gov (U.S. Department of Energy (DOE))

"This PowerPoint presentation was originally given by Dylan Grogan, principal investigator at Abengoa Solar, during a SunShot Initiative Concentrating Solar Power program review on April 24, 2013. The project, Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants, seeks to determine whether the inorganic fluids (molten salts) offer a sufficient reduction in levelized energy costs to pursue further development, and to develop the components required for their use. The presentation focuses on presenting conclusions from Phase 1 of the program and looks ahead to review Phase 2 activities."

51

Technical and Economical Performance of Parabolic Trough Collector Power Plant under Algerian Climate  

Science Journals Connector (OSTI)

Parabolic trough solar technology has been proven at nine commercial Solar Electric Generating System (SEGS) power plants that are operating in the California Mojave desert. Simulation using different models when planning this kind of projects and choose the best site for this technology minimizes the risks of these projects. For this purpose, a detailed performance model of the 30 MW SEGS VI parabolic trough power plant was created in the TRNSYS simulation environment using the Solar Thermal Electric Component model library. Both solar and power cycle performance were modeled, but natural gas-fired hybrid operation was not. Good agreement between model predictions and plant measurements was found, with errors usually less than 10%. Also, an economical study has been established to determine the best site, based on the cost of electricity generation. The result shows that Bechar's site is the best site for this technology because of its lowest levelzed electricity cost and its high irradiance level. While the model could be improved, it demonstrates the capability to perform detailed analysis for this technology.

Abdelkader Zaaraoui; Mohamed Lamine Yousfi; Noureddine Said

2012-01-01T23:59:59.000Z

52

An optimized model and test of the China's first high temperature parabolic trough solar receiver  

SciTech Connect

The vacuum solar receiver is the key component of a parabolic trough solar plant, which plays a prominent role in the gross system efficiency. Recently, China's first high temperature vacuum receiver, Sanle-3 HCE, has been developed and produced by Southeast University and Sanle Electronic Group. Before being utilized in China's first parabolic trough solar plant, accurately estimating the thermal properties of this new receiver is important. This paper first establishes and optimizes a 1-D theoretical model at Matlab program to compute the receiver's major heat loss through glass envelope, and then systematically analyzes the major influence factors of heat loss. With the laboratorial steady state test stand, the heat losses of both good vacuum and non-vacuum Sanle-3 receivers were surveyed. Comparison shows the original 1-D model agrees with the ends covered test while remarkably deviating from end exposed test. For the purpose of identifying the influence of receiver's end to total heat loss, an additional 3-D model is built by CFD software to further investigate the different heat transfer processes of receiver's end components. The 3-D end model is verified by heating power and IR temperature distribution images in the test. Combining the optimized 1-D model with the new 3-D end model, the comparison with test data shows a good accordance. At the same time the heat loss curve and emittance curve of this new receiver are given and compared with those of several other existing receivers as references. (author)

Gong, Guangjie; Huang, Xinyan; Wang, Jun; Hao, Menglong [Southeast University, Nanjing (China)

2010-12-15T23:59:59.000Z

53

Cleaning strategies for parabolic-trough solar-collector fields; guidelines for decisions  

SciTech Connect

This report is intended to assist the owner or operator of a parabolic trough solar collector system to decide on a cleaning strategy (equipment, materials, procedures, and schedules). The guidelines are based on information obtained in past research studies, as well as interviews with vendors and users of cleaning and water treatment equipment. The basic procedure recommended utilizes high pressure portable washing equipment. However, since the cleaning problem is so site-specific, no single, detailed approach can be specified. A systematic procedure for evaluating the particular requirements of a site is therefore given. This will allow the solar energy system operator to develop a cleaning strategy which is cost-effective because it is suited to local conditions.

Bergeron, K.D.; Freese, J.M.

1981-06-01T23:59:59.000Z

54

Effect of Angle of Incidence of Sun Rays on the Bending of Absorber Tube of Solar Parabolic Trough Concentrator  

Science Journals Connector (OSTI)

Abstract In a parabolic trough system, the solar flux distribution on the surface of absorber tube is non-uniform which results in circumferential temperature gradient. Thus, bending moment is induced and leads to the deflection in absorber tube from the focal line of trough. It is concluded that during zero angle of incidence of sun rays (angle made by sun rays with trough's aperture normal), absorber tube will not deflect from the focal line. However, during non-zero angle of incidence, the absorber tube will deflect. It is because of the fact that during non-zero angle of incidence, the absorber tube does not receive any concentrated flux near the end facing the sun. In the current work, an analytical expression is derived for finding the deflection in the central axis of absorber tube from the focal line of trough. Results for deflection are plotted for different values of angle of incidence taking the dimensions of LS3 parabolic trough with Schott 2008 PTR70 receiver.

Sourav Khanna; Suneet Singh; Shireesh B. Kedare

2014-01-01T23:59:59.000Z

55

Feasibility Study on the Use of a Solar Thermoelectric Cogenerator Comprising a Thermoelectric Module and Evacuated Tubular Collector with Parabolic Trough Concentrator  

Science Journals Connector (OSTI)

We have designed a new solar thermoelectric cogeneration system consisting of an evacuated tubular solar collector (ETSC) with a parabolic trough concentrator (PTC) and thermoelectric modules (TEMs) to supply ...

L. Miao; M. Zhang; S. Tanemura; T. Tanaka; Y. P. Kang…

2012-06-01T23:59:59.000Z

56

Simulation of solar lithium bromide–water absorption cooling system with parabolic trough collector  

Science Journals Connector (OSTI)

Ahwaz is one of the sweltering cities in Iran where an enormous amount of energy is being consumed to cool residential places in a year. The aim of this research is to simulate a solar single effect lithium bromide–water absorption cooling system in Ahwaz. The solar energy is absorbed by a horizontal N–S parabolic trough collector and stored in an insulated thermal storage tank. The system has been designed to supply the cooling load of a typical house where the cooling load peak is about 17.5 kW (5 tons of refrigeration), which occurs in July. A thermodynamic model has been used to simulate the absorption cycle. The working fluid is water, which is pumped directly to the collector. The results showed that the collector mass flow rate has a negligible effect on the minimum required collector area, but it has a significant effect on the optimum capacity of the storage tank. The minimum required collector area was about 57.6 m2, which could supply the cooling loads for the sunshine hours of the design day for July. The operation of the system has also been considered after sunset by saving solar energy.

M. Mazloumi; M. Naghashzadegan; K. Javaherdeh

2008-01-01T23:59:59.000Z

57

Heat transfer and thermodynamic performance of a parabolic trough receiver with centrally placed perforated plate inserts  

Science Journals Connector (OSTI)

Abstract In this paper, a numerical investigation of thermal and thermodynamic performance of a receiver for a parabolic trough solar collector with perforated plate inserts is presented. The analysis was carried out for different perforated plate geometrical parameters including dimensionless plate orientation angle, the dimensionless plate spacing, and the dimensionless plate diameter. The Reynolds number varies in the range 1.02 × 104 ? Re ? 7.38 × 105 depending on the heat transfer fluid temperature. The fluid temperatures used are 400 K, 500 K, 600 K and 650 K. The porosity of the plate was fixed at 0.65. The study shows that, for a given value of insert orientation, insert spacing and insert size, there is a range of Reynolds numbers for which the thermal performance of the receiver improves with the use of perforated plate inserts. In this range, the modified thermal efficiency increases between 1.2% and 8%. The thermodynamic performance of the receiver due to inclusion of perforated plate inserts is shown to improve for flow rates lower than 0.01205 m3/s. Receiver temperature gradients are shown to reduce with the use of inserts. Correlations for Nusselt number and friction factor were also derived and presented.

Aggrey Mwesigye; Tunde Bello-Ochende; Josua P. Meyer

2014-01-01T23:59:59.000Z

58

NREL Develops New Optical Evaluation Approach for Parabolic Trough Collectors (Fact Sheet)  

SciTech Connect

New analytical method makes it possible to carry out fast evaluation of trough collectors for design purposes.

Not Available

2012-08-01T23:59:59.000Z

59

Life Cycle Assessment of a Parabolic Trough Concentrating Solar Power Plant and the Impacts of Key Design Alternatives  

Science Journals Connector (OSTI)

To inform capacity expansion decisions, hybrid life cycle assessment is used to evaluate a reference design of a parabolic trough concentrating solar power (CSP) facility located in Daggett, CA, along four sustainability metrics: life cycle (LC) greenhouse gas (GHG) emissions, water consumption, cumulative energy demand (CED), and energy payback time (EPBT). ... Power plant system: components typically associated with the power block (e.g., turbine generator set), in addition to other balance-of-plant components, such as buildings, roads, and parking lots. ... The majority of the remaining water consumption is attributed to water consumed during the manufacturing phase (10% of LC or 0.47 L/kWh). ...

John J. Burkhardt; III; Garvin A. Heath; Craig S. Turchi

2011-02-23T23:59:59.000Z

60

Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants - Public Final Technical Report  

SciTech Connect

Executive Summary This Final Report for the "Development of Molten-Salt Heat Transfer Fluid (HTF) Technology for Parabolic Trough Solar Power Plants” describes the overall project accomplishments, results and conclusions. Phase 1 analyzed the feasibility, cost and performance of a parabolic trough solar power plant with a molten salt heat transfer fluid (HTF); researched and/or developed feasible component options, detailed cost estimates and workable operating procedures; and developed hourly performance models. As a result, a molten salt plant with 6 hours of storage was shown to reduce Thermal Energy Storage (TES) cost by 43.2%, solar field cost by 14.8%, and levelized cost of energy (LCOE) by 9.8% - 14.5% relative to a similar state-of-the-art baseline plant. The LCOE savings range met the project’s Go/No Go criteria of 10% LCOE reduction. Another primary focus of Phase 1 and 2 was risk mitigation. The large risk areas associated with a molten salt parabolic trough plant were addressed in both Phases, such as; HTF freeze prevention and recovery, collector components and piping connections, and complex component interactions. Phase 2 analyzed in more detail the technical and economic feasibility of a 140 MWe,gross molten-salt CSP plant with 6 hours of TES. Phase 2 accomplishments included developing technical solutions to the above mentioned risk areas, such as freeze protection/recovery, corrosion effects of applicable molten salts, collector design improvements for molten salt, and developing plant operating strategies for maximized plant performance and freeze risk mitigation. Phase 2 accomplishments also included developing and thoroughly analyzing a molten salt, Parabolic Trough power plant performance model, in order to achieve the project cost and performance targets. The plant performance model and an extensive basic Engineering, Procurement, and Construction (EPC) quote were used to calculate a real levelized cost of energy (LCOE) of 11.50¢/kWhe , which achieved the Phase 2 Go/No Go target of less than 0.12¢/kWhe. Abengoa Solar has high confidence that the primary risk areas have been addressed in the project and a commercial plant utilizing molten salt is economically and technically feasible. The strong results from the Phase 1 and 2 research, testing, and analyses, summarized in this report, led Abengoa Solar to recommend that the project proceed to Phase 3. However, a commercially viable collector interconnection was not fully validated by the end of Phase 2, combined with the uncertainty in the federal budget, forced the DOE and Abengoa Solar to close the project. Thus the resources required to construct and operate a molten salt pilot plant will be solely supplied by Abengoa Solar.

Grogan, Dylan C. P.

2013-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Analytical expression for circumferential and axial distribution of absorbed flux on a bent absorber tube of solar parabolic trough concentrator  

Science Journals Connector (OSTI)

Abstract A parabolic trough has a property to concentrate the incident rays at its focal line, when tracked appropriately. The flux distribution on the absorber tube is non-uniform. Part of the absorber’s periphery facing the sun receives direct incident rays where as part of the other side receives concentrated rays resulting in circumferential non-uniform flux distribution. The intensity of flux also varies along the length of the absorber tube, especially at the sun facing end, depending upon the incidence angle of the sun rays and rim angle of the parabolic cylinder. Such non-uniformity in the flux distribution on the absorber tube leads to non-uniform temperature distribution. Thus the absorber experiences thermal stresses which may lead to bending of the tube thereby creating risk of glass cover damage. In order to estimate the extent of bending, study of the flux distribution is needed. In the present work, expression for the absorbed flux on a bent absorber tube accounting circumferential and axial variations is analytically derived. Optical errors and Gaussian sun shape have also been incorporated. Results have been plotted to study the effect of bending, optical errors and rim angle of the trough on flux distribution.

Sourav Khanna; Shireesh B. Kedare; Suneet Singh

2013-01-01T23:59:59.000Z

62

Design and analysis of hydraulically driven actuation system For a parabolic solar trough  

E-Print Network (OSTI)

This thesis documents Katarina Popovic's contribution to the design of hydraulic cylinder actuation system for day to day solar trough sun tracking, a semester long project within 2.752 Development of Mechanical Products ...

Popovi?, Katarina, S.B. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

63

New Optical Evaluation Approach for Parabolic Trough Collectors: First-Principle OPTical Intercept Calculation  

SciTech Connect

A new analytical method -- First-principle OPTical Intercept Calculation (FirstOPTIC) -- is presented here for optical evaluation of trough collectors. It employs first-principle optical treatment of collector optical error sources and derives analytical mathematical formulae to calculate the intercept factor of a trough collector. A suite of MATLAB code is developed for FirstOPTIC and validated against theoretical/numerical solutions and ray-tracing results. It is shown that FirstOPTIC can provide fast and accurate calculation of intercept factors of trough collectors. The method makes it possible to carry out fast evaluation of trough collectors for design purposes. The FirstOPTIC techniques and analysis may be naturally extended to other types of CSP technologies such as linear-Fresnel collectors and central-receiver towers.

Zhu, G.; Lewandowski, A.

2012-11-01T23:59:59.000Z

64

NREL: TroughNet - Publications  

NLE Websites -- All DOE Office Websites (Extended Search)

Market and economic assessment Solar data Models and tools Also see presentations and posters from past parabolic trough technology workshops. For more publications on parabolic...

65

Experimental and numerical heat transfer analysis of a V-cavity absorber for linear parabolic trough solar collector  

Science Journals Connector (OSTI)

Abstract In the present study, a V-cavity absorber with rectangular fins that can be used in the linear parabolic trough collector (PTC) system was proposed and investigated both theoretically and experimentally. The optical performance of the absorber was studied by means of Monte-Carlo ray-tracing (MCRT) method. An energy balance model and a more detailed three-dimensional numerical model were developed to analyze the flow and heat transfer characteristics. Moreover, an experimental setup was built to validate the theoretical analysis. A reasonable agreement between the theoretical and experimental results was achieved, which proves the feasibility and reliability of the models. The results show that the sunlight could be reflected repeatedly by the triangle shape and nearly no sunlight escapes. The absorber with rectangular fins has a better heat transfer performance with higher outlet temperature of heat transfer fluid (HTF), lower temperature of heating surface and lower heat loss than those of absorber without fins. The effects of heat flux distribution, mass flow rate and direct normal irradiance on the heat transfer performance were further discussed. In addition, the variations of the heat transfer coefficient along z axial direction with different mass flow rates were also calculated based on the numerical results.

X. Xiao; P. Zhang; D.D. Shao; M. Li

2014-01-01T23:59:59.000Z

66

Life Cycle Assessment of a Parabolic Trough Concentrating Solar Power Plant and Impacts of Key Design Alternatives: Preprint  

SciTech Connect

Climate change and water scarcity are important issues for today's power sector. To inform capacity expansion decisions, hybrid life cycle assessment is used to evaluate a reference design of a parabolic trough concentrating solar power (CSP) facility located in Daggett, California, along four sustainability metrics: life cycle greenhouse gas (GHG) emissions, water consumption, cumulative energy demand (CED), and energy payback time (EPBT). This wet-cooled, 103 MW plant utilizes mined nitrate salts in its two-tank, thermal energy storage (TES) system. Design alternatives of dry-cooling, a thermocline TES, and synthetically-derived nitrate salt are evaluated. During its life cycle, the reference CSP plant is estimated to emit 26 g CO2eq per kWh, consume 4.7 L/kWh of water, and demand 0.40 MJeq/kWh of energy, resulting in an EPBT of approximately 1 year. The dry-cooled alternative is estimated to reduce life cycle water consumption by 77% but increase life cycle GHG emissions and CED by 8%. Synthetic nitrate salts may increase life cycle GHG emissions by 52% compared to mined. Switching from two-tank to thermocline TES configuration reduces life cycle GHG emissions, most significantly for plants using synthetically-derived nitrate salts. CSP can significantly reduce GHG emissions compared to fossil-fueled generation; however, dry-cooling may be required in many locations to minimize water consumption.

Heath, G. A.; Burkhardt, J. J.; Turchi, C. S.

2011-09-01T23:59:59.000Z

67

Performance model and annual yield comparison of parabolic-trough solar thermal power plants with either nitrogen or synthetic oil as heat transfer fluid  

Science Journals Connector (OSTI)

Abstract The majority of commercial parabolic-trough plants in the world operate with synthetic oil as heat transfer fluid in the solar field. However, the synthetic oils that are available at affordable cost present some challenges such as their flammability, environmental toxicity and a temperature limitation of around 400 °C. As alternative, this work proposes the use of pressurized nitrogen as heat transfer fluid. In order to analyze the feasibility of this technology, a comparison between a plant with nitrogen and a conventional plant with synthetic oil has been carried out. In both cases, 50 MWe parabolic-trough plants with 6 h of thermal storage are used as reference. A performance model including the solar field, the thermal storage system and the power block has been developed for each plant in the TRNSYS simulation software. This paper also describes the specifications, design and sizing of the solar field and explains the basic operation strategy applied in each model. Both annual simulations have been performed considering the same location, Almería (Spain), and meteorological data. In summary, the results show that similar net annual electricity productions can be attained for parabolic-trough plants with the same collection area using either nitrogen or synthetic oil as heat transfer fluid.

Mario Biencinto; Lourdes González; Eduardo Zarza; Luis E. Díez; Javier Muñoz-Antón

2014-01-01T23:59:59.000Z

68

3-D Numerical Simulation of Heat Transfer and Turbulent Flow in a Receiver Tube of Solar Parabolic Trough Concentrator with Louvered Twisted-tape Inserts  

Science Journals Connector (OSTI)

Abstract High temperature and higher-thermal efficiency for CSP cycles are main goals to improve trough collector's technologies. For a parabolic trough collector the major factor for optimum heat transfer from sun to the heat transfer fluid passing in the absorber tube is to have high convection heat transfer coefficient. Literature shows that absorber tubes with various tape inserts are used and recommended to produce high convection coefficient. Typical twisted-tape (TT) enhances heat exchange between tube surface and working fluid by generating turbulent swirling flow. In this study, enhancement of convection coefficient in the receiver tube of a solar parabolic trough concentrator that the absorber tube is equipped with a new perforated louvered twisted- tape (LTT) is studied numerically. For numerical simulations three different twist ratios (TR), TR=y/W= 2.67, 4, 5.33 (y is the length required for one twist and W is the width of the tape) are used in an experimental laboratory trough collector. Flow is assumed turbulent due to louvered perforated surface and rotational shape of the tape. For thermal boundary condition, non- uniform wall solar heat flux is determined by Soltrace code on the outer surface of the absorber tube. Heat transfer rate and pressure drop are determined for fully developed condition for several Reynolds numbers based on the tube diameter and flow mean velocity. Results show that the heat transfer coefficient and pressure drop increase significantly in comparison with a typical plain twisted-tape in the tube and a plain tube.

Sh. Ghadirijafarbeigloo; A.H. Zamzamian; M. Yaghoubi

2014-01-01T23:59:59.000Z

69

Nexant Parabolic Trough Solar Power Plant Systems Analysis; Task 1: Preferred Plant Size, 20 January 2005 - 31 December 2005  

SciTech Connect

The Rankine cycles for commercial parabolic trough solar projects range in capacity from 13.5 MWe at the Solar Electric Generating Station I (SEGS I) plant, to a maximum of 89 MWe at the SEGS VIII/IX plants. The series of SEGS projects showed a consistent reduction in the levelized energy cost due to a combination of improvements in collector field technology and economies of scale in both the Rankine cycle and the operation and maintenance costs. Nonetheless, the question of the optimum Rankine cycle capacity remains an open issue. The capacities of the SEGS VIII/IX plants were limited by Federal Energy Regulatory Commission and Public Utility Regulatory Policy Act requirements to a maximum net output of 80 MWe. Further improvements in the Rankine cycle efficiency, and economies of scale in both the capital and the operating cost, should be available at larger plant sizes. An analysis was conducted to determine the effect of Rankine cycle capacities greater than 80 MWe on the levelized energy cost. The study was conducted through the following steps: (1) Three gross cycle capacities of 88 MWe, 165 MWe, and 220 MWe were selected. (2) Three Rankine cycle models were developed using the GateCycle program. The models were based on single reheat turbine cycles, with main steam conditions of 1,450 lb{sub f}/in{sup 2} and 703 F, and reheat steam conditions of 239 lb{sub f}/in{sup 2} and 703 F. The feedwater heater system consisted of 5 closed heaters and 1 open deaerating heater. The design condenser pressure was 2.5 in. HgA. (3) The optimization function within Excelergy was used to determine the preferred solar multiple for each plant. Two cases were considered for each plant: (a) a solar-only project without thermal storage, and (b) a solar-fossil hybrid project, with 3 hours of thermal storage and a heat transport fluid heater fired by natural gas. (4) For each of the 6 cases, collector field geometries, heat transport fluid pressure losses, and heat transport pump power requirements were calculated with a field piping optimization model. (5) Annual electric energy outputs, capital costs, and annual operating costs were calculated for each case using the default methods within Excelergy, from which estimates of the levelized energy costs were developed. The plant with the lowest energy cost was considered the optimum.

Kelly, B.

2006-07-01T23:59:59.000Z

70

3D Thermal-structural Analysis of an Absorber Tube of a Parabolic Trough Collector and the Effect of Tube Deflection on Optical Efficiency  

Science Journals Connector (OSTI)

Abstract In this paper deformation rate of an absorber tube of a parabolic trough collector due to a 3D solar flux density distribution is studied theoretically. Three dimensional temperature distribution and tube thermal expansion due to non-uniform solar flux over the tube are determined numerically. The local concentration ratio for the parabolic trough collectors, which is a key boundary condition in the thermal analysis is computed by Monte Carlo Ray Tracing method for different conditions. The governing equations of thermo-elastic constitutive are solved in three dimensions for steady state thermal and static structural analysis with appropriate boundary condition using Finite Volume and Finite Element numerical codes. Thermal stresses and strain are determined for two types of collectors; first one is a constructed collector and second one is under construction at Shiraz (Iran) solar thermal power plant. Results of the local concentration ratio, flux density, temperature distribution and thermal expansions are determined for the designed conditions. Appropriate flow rate and convection coefficient for each season are found in order to decrease tube bending, prevent optical efficiency drop of collectors, keep high factor of safety, and reduce cyclic daily amplitude motion which lead to longer life time of absorber tube.

S.M. Akbarimoosavi; M. Yaghoubi

2014-01-01T23:59:59.000Z

71

Minimum entropy generation due to heat transfer and fluid friction in a parabolic trough receiver with non-uniform heat flux at different rim angles and concentration ratios  

Science Journals Connector (OSTI)

Abstract In this paper, Monte Carlo ray-tracing and computational fluid dynamics are used to numerically investigate the minimum entropy generation due to heat transfer and fluid friction in a parabolic trough receiver. The analysis was carried out for rim angles in the range 40°–120°, concentration ratios in the range 57–143, Reynolds numbers in the range 1.02 × 104–1.36 × 106 and fluid temperatures in the range 350–650 K. Results show existence of an optimal Reynolds number at any given combination of fluid temperature, concentration ratio and rim angle for which the total entropy generation is a minimum. The total entropy generation was found to increase as the rim angle reduced, concentration ratio increased and fluid temperature reduced. The high entropy generation rates at low rim angles are mainly due to high peak temperatures in the absorber tube at these low rim angles.

Aggrey Mwesigye; Tunde Bello-Ochende; Josua P. Meyer

2014-01-01T23:59:59.000Z

72

Solar aided power generation of a 300 MW lignite fired power plant combined with line-focus parabolic trough collectors field  

Science Journals Connector (OSTI)

Abstract Nowadays, conventional coal or gas fired power plants are the dominant way to generate electricity in the world. In recent years there is a growth in the field of renewable energy sources in order to avoid the threat of climate change from fossil fuel combustion. Solar energy, as an environmental friendly energy source, may be the answer to the reduction of global CO2 emissions. This paper presents the concept of Solar Aided Power Generation (SAPG), a combination of renewable and conventional energy sources technologies. The operation of the 300 MW lignite fired power plant of Ptolemais integrated with a solar field of parabolic trough collectors was simulated using TRNSYS software in both power boosting and fuel saving modes. The power plant performance, power output variation, fuel consumption and CO2 emissions were calculated. Furthermore, an economic analysis was carried out for both power boosting and fuel saving modes of operation and optimum solar contribution was estimated.

G.C. Bakos; Ch. Tsechelidou

2013-01-01T23:59:59.000Z

73

Techno-economic assessment of substituting natural gas based heater with thermal energy storage system in parabolic trough concentrated solar power plant  

Science Journals Connector (OSTI)

Abstract Parabolic-trough (PT) concentrated solar power (CSP) plants are very vulnerable to daily fluctuations in solar radiation. This dependence can be mitigated through a hybridization of solar energy with natural gas based heaters that supply thermal energy during the night or whenever solar irradiance level is dimmed. However, there is more sustainable way for CSP plants to avoid power-generation-outages caused by transient weather conditions, i.e. installation of thermal energy storage (TES). Such a system stores surplus thermal energy provided by solar field during sunny hours and discharges it when the sun is not available. Shams-1 PT plant in Madinat-Zayed, United-Arab-Emirates (UAE) has two natural gas based components, i.e. steam-booster heater and heat transfer fluid (HTF) heater. In the current study, model of Shams-1 was developed and analyzed in the System Advisor Model (SAM) software. It has been attempted to replace the HTF heater with TES. A parametric study has been conducted to determine the size of the TES as well as the solar field such that the specified power target demand would be satisfied. The results of the parametric analysis showed that TES can't completely replace the HTF heater, within reasonable sizes. Nevertheless, consequent simulations depicts that TES increases the capacity factor on one hand and decreases fuel consumption on the other hand.

V. Poghosyan; Mohamed I. Hassan

2015-01-01T23:59:59.000Z

74

LCA (Life Cycle Assessment) of Parabolic Trough CSP: Materials Inventory and Embodied GHG Emissions from Two-Tank Indirect and Thermocline Thermal Storage (Presentation)  

SciTech Connect

In the United States, concentrating solar power (CSP) is one of the most promising renewable energy (RE) technologies for reduction of electric sector greenhouse gas (GHG) emissions and for rapid capacity expansion. It is also one of the most price-competitive RE technologies, thanks in large measure to decades of field experience and consistent improvements in design. One of the key design features that makes CSP more attractive than many other RE technologies, like solar photovoltaics and wind, is the potential for including relatively low-cost and efficient thermal energy storage (TES), which can smooth the daily fluctuation of electricity production and extend its duration into the evening peak hours or longer. Because operational environmental burdens are typically small for RE technologies, life cycle assessment (LCA) is recognized as the most appropriate analytical approach for determining their environmental impacts of these technologies, including CSP. An LCA accounts for impacts from all stages in the development, operation, and decommissioning of a CSP plant, including such upstream stages as the extraction of raw materials used in system components, manufacturing of those components, and construction of the plant. The National Renewable Energy Laboratory (NREL) is undertaking an LCA of modern CSP plants, starting with those of parabolic trough design.

Heath, G.; Burkhardt, J.; Turchi, C.; Decker, T.; Kutscher, C.

2009-07-20T23:59:59.000Z

75

Testing thermocline filler materials and molten-salt heat transfer fluids for thermal energy storage systems used in parabolic trough solar power plants.  

SciTech Connect

Parabolic trough power systems that utilize concentrated solar energy to generate electricity are a proven technology. Industry and laboratory research efforts are now focusing on integration of thermal energy storage as a viable means to enhance dispatchability of concentrated solar energy. One option to significantly reduce costs is to use thermocline storage systems, low-cost filler materials as the primary thermal storage medium, and molten nitrate salts as the direct heat transfer fluid. Prior thermocline evaluations and thermal cycling tests at the Sandia National Laboratories' National Solar Thermal Test Facility identified quartzite rock and silica sand as potential filler materials. An expanded series of isothermal and thermal cycling experiments were planned and implemented to extend those studies in order to demonstrate the durability of these filler materials in molten nitrate salts over a range of operating temperatures for extended timeframes. Upon test completion, careful analyses of filler material samples, as well as the molten salt, were conducted to assess long-term durability and degradation mechanisms in these test conditions. Analysis results demonstrate that the quartzite rock and silica sand appear able to withstand the molten salt environment quite well. No significant deterioration that would impact the performance or operability of a thermocline thermal energy storage system was evident. Therefore, additional studies of the thermocline concept can continue armed with confidence that appropriate filler materials have been identified for the intended application.

Kelly, Michael James; Hlava, Paul Frank; Brosseau, Douglas A.

2004-07-01T23:59:59.000Z

76

Project Profile: Brayton Cycle Baseload Power Tower  

Energy.gov (U.S. Department of Energy (DOE))

Wilson Solarpower, under the Baseload CSP FOA, is validating a proposed utility-scale, Brayton cycle baseload power tower system with a capacity factor of at least 75% and LCOE of $0.09/kWh.

77

The cost of balancing a parabolic trough concentrated solar power plant in the Spanish electricity spot markets  

Science Journals Connector (OSTI)

Abstract This study presents a new dispatch model (SCSP) for a CSP plant based on a dynamic programing algorithm. The purpose is to investigate the cost of balancing a CSP plant in the Spanish electricity market. Results are presented for a parabolic plant in the Spanish market for years 2009, 2010 and 2011 using solar availability data at the Plataforma Solar, Andalucia, Spain. The variation of balancing cost with solar multiple (SM) and number of storage hours (Nh) is analysed and results for two different optimisation cases presented. The first uses day-ahead forecasts for both solar availability and market prices. The second uses day-ahead solar availability and within-day market price forecasts. Both cases are settled in the balancing market. Key results include that the balancing cost decreases with increased SM and Nh and that balancing costs can be 2.2% to 9.5% of the plants gross income. For all SM and Nh, balancing costs are a function of season, being lower in summer than winter driven by increased load-factor in summer. During the year Quarter 3 has a lower balancing cost than Quarter 2 due to a closer match between forecast and actual solar availability. Optimising against within-day prices costs more than with day-ahead prices resulting from more balancing energy traded at a less favourable price than day-ahead. It is envisaged that the numbers presented in this study will provide an aid to policy makers when constructing tariffs to support future CSP development.

S.W. Channon; P.C. Eames

2014-01-01T23:59:59.000Z

78

Basic Control of Parabolic Troughs  

Science Journals Connector (OSTI)

The chapter outlines the main features of the different modeling and basic control approaches used during the last 25 years to control the distributed collector systems (DCS). The DCS may be described by a dis...

Prof. Eduardo F. Camacho; Manuel Berenguel…

2012-01-01T23:59:59.000Z

79

Project Profile: Innovative Thermal Energy Storage for Baseload...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Thermal Energy Storage for Baseload Solar Power Generation Project Profile: Innovative Thermal Energy Storage for Baseload Solar Power Generation University of South Florida logo...

80

SunShot Initiative: Brayton Cycle Baseload Power Tower  

NLE Websites -- All DOE Office Websites (Extended Search)

Brayton Cycle Baseload Power Brayton Cycle Baseload Power Tower to someone by E-mail Share SunShot Initiative: Brayton Cycle Baseload Power Tower on Facebook Tweet about SunShot Initiative: Brayton Cycle Baseload Power Tower on Twitter Bookmark SunShot Initiative: Brayton Cycle Baseload Power Tower on Google Bookmark SunShot Initiative: Brayton Cycle Baseload Power Tower on Delicious Rank SunShot Initiative: Brayton Cycle Baseload Power Tower on Digg Find More places to share SunShot Initiative: Brayton Cycle Baseload Power Tower on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

SunShot Initiative: Baseload Concentrating Solar Power Generation  

NLE Websites -- All DOE Office Websites (Extended Search)

Concentrating Solar Concentrating Solar Power Generation to someone by E-mail Share SunShot Initiative: Baseload Concentrating Solar Power Generation on Facebook Tweet about SunShot Initiative: Baseload Concentrating Solar Power Generation on Twitter Bookmark SunShot Initiative: Baseload Concentrating Solar Power Generation on Google Bookmark SunShot Initiative: Baseload Concentrating Solar Power Generation on Delicious Rank SunShot Initiative: Baseload Concentrating Solar Power Generation on Digg Find More places to share SunShot Initiative: Baseload Concentrating Solar Power Generation on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative

82

Project Profile: Baseload CSP Generation Integrated with Sulfur...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Related Links FAQs Contact Us Offices You are here Home Concentrating Solar Power Project Profile: Baseload CSP Generation Integrated with Sulfur-Based...

83

Investment Decisions for Baseload Power Plants  

NLE Websites -- All DOE Office Websites (Extended Search)

Investment Decisions for Investment Decisions for Baseload Power Plants January 29, 2010 402/012910 Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United

84

Trough to trough The Colorado River  

E-Print Network (OSTI)

Trough to trough The Colorado River and the Salton Sea Robert E. Reynolds, editor Trough to trough....................................................................................5 Robert E. Reynolds The vegetation of the Mojave and Colorado deserts geological excursions and observations of the Colorado Desert region by William Phipps Blake, 1853 and 1906

de Lijser, Peter

85

NREL: TroughNet - Data and Resources  

NLE Websites -- All DOE Office Websites (Extended Search)

Data and Resources Data and Resources This site features data and resources about parabolic trough power plant technology, including: Industry partners U.S. power plant data Solar data Models and tools System and component testing Also see our publications on parabolic trough power plants. Printable Version TroughNet Home Technologies Market & Economic Assessment Research & Development Data & Resources Industry Partners Power Plant Data Solar Data Models & Tools System & Component Testing FAQs Workshops Publications Email Updates Did you find what you needed? Yes 1 No 0 Thank you for your feedback. Would you like to take a moment to tell us how we can improve this page? Submit We value your feedback. Thanks! We've received your feedback. Something went wrong. Please try again later.

86

SunShot Initiative: Baseload Concentrating Solar Power Generation  

NLE Websites -- All DOE Office Websites (Extended Search)

Concentrating Solar Power Generation Concentrating Solar Power Generation In 2010, DOE issued the Baseload Concentrating Solar Power (CSP) Generation funding opportunity announcement (FOA). The following projects were selected under this competitive solicitation: Abengoa: Advanced Nitrate Salt Central Receiver Power Plant eSolar: Modular and Scalable Baseload Molten Salt Plant Conceptual Design and Feasibility General Atomics: Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage HiTek: Low-Cost Heliostat Development Infinia: Innovative Phase Change Thermal Energy Storage Solution for Baseload Power PPG: Next-Generation Low-Cost Reflector Rocketdyne: Solar Power Tower Improvements with the Potential to Reduce Costs SENER: High-Efficiency Thermal Storage System for Solar Plants

87

Lite Trough LLC | Open Energy Information  

Open Energy Info (EERE)

Lite Trough LLC Lite Trough LLC Jump to: navigation, search Name Lite Trough LLC Place Milford, Connecticut Zip 6460 Sector Solar Product Developing a parabolic trough system for Solar Thermal Electricity Generation (STEG). Coordinates 38.026545°, -77.371139° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.026545,"lon":-77.371139,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

88

Project Profile: Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants  

Energy.gov (U.S. Department of Energy (DOE))

Terrafore, under the Baseload CSP FOA, is developing novel encapsulated phase change materials (PCM) for use in thermal storage applications to significantly reduce the LCOE for baseload CSP plants.

89

Project Profile: Innovative Phase Change Thermal Energy Storage Solution for Baseload Power  

Energy.gov (U.S. Department of Energy (DOE))

Infinia, under the Baseload CSP FOA, is developing and demonstrating a subscale system for baseload CSP power generation using thermal energy storage (TES) in a unique integration of innovative enhancements that improves performance and reduces cost.

90

Project Profile: Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage  

Energy.gov (U.S. Department of Energy (DOE))

General Atomics, under the Baseload CSP FOA, is demonstrating the engineering feasibility of using a sulfur-based thermochemical cycle to store heat from a CSP plant and support baseload power...

91

Elastic approximation for a solar parabolic February 29, 2012  

E-Print Network (OSTI)

of these additional forces are computed for var- ious cases, that give a result in theoretical maximal concentration cost of the parabolic mirror is one of the fundamental factors in the production of a parabolic trough. Tra- ditionally, the support of the mirror is a rigid sheet precisely preformed to the shape

Paris-Sud XI, Université de

92

SunShot Initiative: Modular and Scalable Baseload Molten Salt Plant  

NLE Websites -- All DOE Office Websites (Extended Search)

Modular and Scalable Baseload Modular and Scalable Baseload Molten Salt Plant Conceptual Design and Feasibility to someone by E-mail Share SunShot Initiative: Modular and Scalable Baseload Molten Salt Plant Conceptual Design and Feasibility on Facebook Tweet about SunShot Initiative: Modular and Scalable Baseload Molten Salt Plant Conceptual Design and Feasibility on Twitter Bookmark SunShot Initiative: Modular and Scalable Baseload Molten Salt Plant Conceptual Design and Feasibility on Google Bookmark SunShot Initiative: Modular and Scalable Baseload Molten Salt Plant Conceptual Design and Feasibility on Delicious Rank SunShot Initiative: Modular and Scalable Baseload Molten Salt Plant Conceptual Design and Feasibility on Digg Find More places to share SunShot Initiative: Modular and Scalable

93

SunShot Initiative: Baseload CSP Generation Integrated with Sulfur-Based  

NLE Websites -- All DOE Office Websites (Extended Search)

CSP Generation CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage to someone by E-mail Share SunShot Initiative: Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage on Facebook Tweet about SunShot Initiative: Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage on Twitter Bookmark SunShot Initiative: Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage on Google Bookmark SunShot Initiative: Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage on Delicious Rank SunShot Initiative: Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage on Digg Find More places to share SunShot Initiative: Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage on

94

Rinse trough with improved flow  

DOE Patents (OSTI)

Novel rinse troughs accomplish thorough uniform rinsing. The troughs are suitable for one or more essentially planar objects having substantially the same shape. The troughs ensure that each surface is rinsed uniformly. The new troughs provide uniform rinse fluid flow over the objects` surfaces to accomplish a more thorough rinse than prior art troughs. 5 figs.

O`Hern, T.J.; Grasser, T.W.

1998-08-11T23:59:59.000Z

95

NREL: TroughNet - Email Updates - Subscribe  

NLE Websites -- All DOE Office Websites (Extended Search)

Email Updates - Subscribe Email Updates - Subscribe Subscribe to receive email updates about parabolic trough technology, including: Status on R&D and deployment projects Workshops and other events New publications New data and resources. Please provide and submit the following information. Name (first & last): Organization/Affiliation: Email Address: Submit Clear Form Unsubscribe Printable Version TroughNet Home Technologies Market & Economic Assessment Research & Development Data & Resources FAQs Workshops Publications Email Updates Did you find what you needed? Yes 1 No 0 Thank you for your feedback. Would you like to take a moment to tell us how we can improve this page? Submit We value your feedback. Thanks! We've received your feedback. Something went wrong. Please try again later.

96

Project Profile: Innovative Thermal Energy Storage for Baseload Solar Power Generation  

Energy.gov (U.S. Department of Energy (DOE))

The University of South Florida, under the Baseload CSP FOA, is researching and developing a thermal energy storage system based on encapsulated phase change materials (PCM) that can meet the utility-scale baseload CSP plant requirements at significantly lower system costs.

97

Directed flow fluid rinse trough  

DOE Patents (OSTI)

Novel rinse troughs accomplish thorough uniform rinsing. The tanks are suitable for one or more essentially planar items having substantially the same shape. The troughs ensure that each surface is rinsed uniformly. The new troughs also require less rinse fluid to accomplish a thorough rinse than prior art troughs.

Kempka, Steven N. (9504 Lona La., Albuquerque, NM 87111); Walters, Robert N. (11872 LaGrange St., Boise, ID 83709)

1996-01-01T23:59:59.000Z

98

Directed flow fluid rinse trough  

DOE Patents (OSTI)

Novel rinse troughs accomplish thorough uniform rinsing. The tanks are suitable for one or more essentially planar items having substantially the same shape. The troughs ensure that each surface is rinsed uniformly. The new troughs also require less rinse fluid to accomplish a thorough rinse than prior art troughs. 9 figs.

Kempka, S.N.; Walters, R.N.

1996-07-02T23:59:59.000Z

99

Advanced Low-Cost Receivers for Parabolic Troughs  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

radiative losses. IMPACT This technology represents significant operational and cost advances in the most trusted and broadly implemented form of CSP. In addition, it...

100

Advanced Low-Cost Receivers for Parabolic Troughs (Fact Sheet)  

SciTech Connect

Norwich Technologies is one of the 2012 SunShot CSP R&D awardees for their advanced receivers. This fact sheet explains the motivation, description, and impact of the project.

Not Available

2012-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Project Profile: High-Concentration, Low-Cost Parabolic Trough...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

aperture, while incorporating additional advancements that substantially lower installed solar field costs. For example, the reflective film surfaces are being upgraded to improve...

102

Advanced Low-Cost Receivers for Parabolic Troughs  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

receiver designs were validated by comparing to published correlations and NREL data. Heat loss increases when vacuum fails due to convection within annulus Receiver model...

103

A new parabolic trough solar collector P. Kohlenbach1  

E-Print Network (OSTI)

oil is circulated inside the absorber tube, and transfers the heat to a ORC FP6 unit sourced from of this facility, to develop efficient new methods of capturing and harnessing solar heat for combined heat) and remote power and energy. The array is designed to drive a small Organic Rankine Cycle unit with a power

104

Project Profile: Modular and Scalable Baseload Molten Salt Plant Conceptual Design and Feasibility  

Energy.gov (U.S. Department of Energy (DOE))

eSolar, under the Baseload CSP FOA, is designing a 100-MW, 75% capacity factor, molten salt power tower plant, based around a molten salt receiver and heliostat field module with a nominal thermal rating of 50 MWth. They are taking a modular approach, which can be scaled through replication of the receiver/field module to meet output and capacity factor requirements.

105

SunShot Initiative: Baseload CSP Generation Integrated with Sulfur-Based  

NLE Websites -- All DOE Office Websites (Extended Search)

CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage General Atomics logo Graphic of a diagram of squares and circles connected by arrows. Sulfur-based TES can compensate for diurnal and seasonal insolation fluctuations. General Atomics, under the Baseload CSP FOA, is demonstrating the engineering feasibility of using a sulfur-based thermochemical cycle to store heat from a CSP plant and support baseload power generation. Approach There are three main project objectives under this award: Study the sulfur generating disproportionation reaction and develop it into a practical engineering process step. Carry out preliminary process components design and experimental validation. The engineering data will be used for process integration between the CSP plant, the sulfur processing and storage plant, and the electricity generation unit.

106

Modeling and Analysis of Stress in High Temperature Molten Salt Trough Receivers  

Science Journals Connector (OSTI)

Abstract SkyFuel has investigated the stresses and deformations occurring in parabolic trough receivers operating at temperatures above 425 °C. Operating at these temperatures allows for direct molten salt storage and higher efficiency conversion from thermal to electric energy. However, at these temperatures, the typical stainless steels used in receiver construction are susceptible to chromium carbide precipitation. After the precipitation has occurred, the steel is vulnerable to intergranular corrosion, and the fatigue strength of the steel is reduced. Corrosion increases the stresses in the receiver walls, and the reduced fatigue strength lowers the stress limit where failure will occur. This paper presents the results of an analysis of these stresses and an evaluation of the receiver material at these operating temperatures. It is shown that parabolic trough receivers can be designed to mitigate the negative effects of chromium carbide precipitation and operate above 425 °C without risk of premature failure.

Nolan Viljoen

2014-01-01T23:59:59.000Z

107

Sensitivity of Concentrating Solar Power Trough Performance, Cost and Financing with Solar Advisor Model  

SciTech Connect

A comprehensive solar technology systems analysis model, the Solar Advisor Model (SAM) was developed to support the federal R&D community and the solar industry. This model, developed by staff at NREL and Sandia National Laboratory, is able to model the costs, finances, and performance of concentrating solar power and photovoltaics (PV). Currently, parabolic troughs and concentrating PV are the two concentrating technologies modeled within the SAM environment.

Blair, N.; Mehos, M.; Christensen, C.

2008-03-01T23:59:59.000Z

108

Freeze-thaw tests of trough receivers employing a molten salt working fluid.  

SciTech Connect

Several studies predict an economic benefit of using nitrate-based salts instead of the current synthetic oil within a solar parabolic trough field. However, the expected economic benefit can only be realized if the reliability and optical performance of the salt trough system is comparable to today's oil trough. Of primary concern is whether a salt-freeze accident and subsequent thaw will lead to damage of the heat collection elements (HCEs). This topic was investigated by experiments and analytical analysis. Results to date suggest that damage will not occur if the HCEs are not completely filled with salt. However, if the HCE is completely filled at the time of the freeze, the subsequent thaw can lead to plastic deformation and significant bending of the absorber tube.

Moss, Timothy A.; Iverson, Brian D.; Siegel, Nathan Phillip; Kolb, Gregory J.; Ho, Clifford Kuofei

2010-05-01T23:59:59.000Z

109

Parabolic-Dish Solar Concentrators of Film on Foam  

E-Print Network (OSTI)

Parabolic and spherical mirrors are constructed of aluminized PET polyester film on urethane foam. During construction, the chosen shape of the mirror is created by manipulating the elastic/plastic behavior of the film with air pressure. Foam is then applied to the film and, once hardened, air pressure is removed. At an f-number of 0.68, preliminary models have an optical angular spread of less than 0.25 degrees, a factor of 3.3 smaller than that for a perfectly spherical mirror. The possibility exists for creating large-lightweight mirrors with excellent shape and stiffness. These "film-on-foam" construction techniques may also be applicable to parabolic-trough solar concentrators but do not appear to be suitable for optical imaging applications because of irregularities in the film.

Barton, Sean A

2009-01-01T23:59:59.000Z

110

Sandia National Laboratories: Parabolic Dishes  

NLE Websites -- All DOE Office Websites (Extended Search)

Test Facility * NSTTF * parabolic dishes * Renewable Energy * SAND 2011-4654W * solar * Solar Energy * solar power * Solar Research * TBC * Test Bed Concentrators Comments are...

111

Advanced photovoltaic-trough development  

SciTech Connect

The scope of the work on photvoltaic troughs includes analytical studies, hardware development, and component testing. Various aspects of the system have been optimized and improvements have been realized, particularly in the receiver and reflecting surface designs. An empirical system performance model has been developed that closely agrees with measured system performance. This in-depth study of single-axis reflecting linear focus photovoltaic concentrators will be very beneficial in the development of improved models for similar systems as well as other phtovoltaic concentrator designs.

Spencer, R.; Yasuda, K.; Merson, B.

1982-04-01T23:59:59.000Z

112

241-AZ-101 pump removal trough analysis  

SciTech Connect

As part of the current Hanford mission of environmental cleanup, various long length equipment must be removed from highly radioactive waste tanks. The removal of equipment will utilize portions of the Equipment Removal System for Project W320 (ERS-W320), specifically the 50 ton hydraulic trailer system. Because the ERS-W320 system was designed to accommodate much heavier equipment it is adequate to support the dead weight of the trough, carriage and related equipment for 241AZ101 pump removal project. However, the ERS-W320 components when combined with the trough and its` related components must also be analyzed for overturning due to wind loads. Two troughs were designed, one for the 20 in. diameter carriage and one for the 36 in. diameter carriage. A proposed 52 in. trough was not designed and, therefore is not included in this document. In order to fit in the ERS-W320 strongback the troughs were design with the same widths. Structurally, the only difference between the two troughs is that more material was removed from the stiffener plates on the 36 in trough. The reduction in stiffener plate material reduces the allowable load. Therefore, only the 36 in. trough was analyzed.

Coverdell, B.L.

1995-10-17T23:59:59.000Z

113

Flexible Coal: An Example Evolution from Baseload to Peaking Plant (Presentation)  

SciTech Connect

Twenty-first century power systems, with higher penetration levels of low-carbon energy, smart grids, and other emerging technologies, will favor resources that have low marginal costs and provide system flexibility (e.g., the ability to cycle on and off to follow changes in variable renewable energy plant output). Questions remain about both the fate of coal plants in this scenario and whether they can cost-effectively continue to operate if they cycle routinely. The experience from the CGS plant demonstrates that coal plants can become flexible resources. This flexibility - namely the ability to cycle on and off and run at lower output (below 40% of capacity) - requires limited hardware modifications but extensive modifications to operational practice. Cycling does damage the plant and impact its life expectancy compared to baseload operations. Nevertheless, strategic modifications, proactive inspections and training programs, among other operational changes to accommodate cycling, can minimize the extent of damage and optimize the cost of maintenance. CGS's cycling, but not necessarily the associated price tag, is replicable. Context - namely, power market opportunities and composition of the generation fleet - will help determine for other coal plants the optimal balance between the level of cycling-related forced outages and the level of capital investment required to minimize those outages. Replicating CGS's experience elsewhere will likely require a higher acceptance of forced outages than regulators and plant operators are accustomed to; however, an increase in strategic maintenance can minimize the impact on outage rates.

Cochran, J.

2014-05-01T23:59:59.000Z

114

Flexible Coal: An Example Evolution from Baseload to Peaking Plant (Presentation)  

SciTech Connect

Twenty-first century power systems, with higher penetration levels of low-carbon energy, smart grids, and other emerging technologies, will favor resources that have low marginal costs and provide system flexibility (e.g., the ability to cycle on and off to follow changes in variable renewable energy plant output). Questions remain about both the fate of coal plants in this scenario and whether they can cost-effectively continue to operate if they cycle routinely. The experience from the CGS plant demonstrates that coal plants can become flexible resources. This flexibility - namely the ability to cycle on and off and run at lower output (below 40% of capacity) - requires limited hardware modifications but extensive modifications to operational practice. Cycling does damage the plant and impact its life expectancy compared to baseload operations. Nevertheless, strategic modifications, proactive inspections and training programs, among other operational changes to accommodate cycling, can minimize the extent of damage and optimize the cost of maintenance. CGS's cycling, but not necessarily the associated price tag, is replicable. Context - namely, power market opportunities and composition of the generation fleet - will help determine for other coal plants the optimal balance between the level of cycling-related forced outages and the level of capital investment required to minimize those outages. Replicating CGS's experience elsewhere will likely require a higher acceptance of forced outages than regulators and plant operators are accustomed to; however, an increase in strategic maintenance can minimize the impact on outage rates.

Cochran, J.

2014-08-01T23:59:59.000Z

115

Base-Load and Peak Electricity from a Combined Nuclear Heat and Fossil Combined-Cycle Plant  

SciTech Connect

A combined-cycle power plant is proposed that uses heat from a high-temperature reactor and fossil fuel to meet base-load and peak electrical demands. The high-temperature gas turbine produces shaft power to turn an electric generator. The hot exhaust is then fed to a heat recovery steam generator (HRSG) that provides steam to a steam turbine for added electrical power production. A simplified computational model of the thermal power conversion system was developed in order to parametrically investigate two different steady-state operation conditions: base load nuclear heat only from an Advanced High Temperature Reactor (AHTR), and combined nuclear heat with fossil heat to increase the turbine inlet temperature. These two cases bracket the expected range of power levels, where any intermediate power level can result during electrical load following. The computed results indicate that combined nuclear-fossil systems have the potential to offer both low-cost base-load electricity and lower-cost peak power relative to the existing combination of base-load nuclear plants and separate fossil-fired peak-electricity production units. In addition, electric grid stability, reduced greenhouse gases, and operational flexibility can also result with using the conventional technology presented here for the thermal power conversion system coupled with the AHTR.

Conklin, Jim [ORNL; Forsberg, Charles W [ORNL

2007-01-01T23:59:59.000Z

116

Base-Load and Peak Electricity from a Combined Nuclear Heat and Fossil Combined-Cycle Plant  

SciTech Connect

A combined-cycle power plant is proposed that uses heat from a high-temperature reactor and fossil fuel to meet base-load and peak electrical demands. The high temperature gas turbine produces shaft power to turn an electric generator. The hot exhaust is then fed to a heat recovery steam generator (HRSG) that provides steam to a steam turbine for added electrical power production. A simplified computational model of the thermal power conversion system was developed in order to parametrically investigate two different steady-state operation conditions: base load nuclear heat only from an Advanced High Temperature Reactor (AHTR), and combined nuclear heat with fossil heat to increase the turbine inlet temperature. These two cases bracket the expected range of power levels, where any intermediate power level can result during electrical load following. The computed results indicate that combined nuclear-fossil systems have the potential to offer both low-cost base-load electricity and lower-cost peak power relative to the existing combination of base-load nuclear plants and separate fossil-fired peak-electricity production units. In addition, electric grid stability, reduced greenhouse gases, and operational flexibility can also result with using the conventional technology presented here for the thermal power conversion system coupled with the AHTR. (authors)

Conklin, James C.; Forsberg, Charles W. [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831 (United States)

2007-07-01T23:59:59.000Z

117

Energetics of Winter Troughs Entering South America  

Science Journals Connector (OSTI)

The energetics and behavior of midtropospheric troughs over the Southern Hemisphere and their relationship with South America surface cyclogenesis were studied during the winters of 1999–2003. All surface cyclogenesis situations over Uruguay and ...

Everson Dal Piva; Manoel A. Gan; V. Brahmananda Rao

2010-04-01T23:59:59.000Z

118

Mobile trough genesis over the Mongolian Plateau  

E-Print Network (OSTI)

method developed by Lefevre and Nielsen-Gammon (1995) was used to track the mobile troughs-a quasigeostrophic potential vorticity (QGPV) and associated piecewise tendency diagnosis (PTD) technique developed by Lefevre (1995) was used to analyze...

McEver, Gregory David

2012-06-07T23:59:59.000Z

119

A review of integrated solar combined cycle system (ISCCS) with a parabolic trough technology  

Science Journals Connector (OSTI)

Abstract The huge amount of solar energy available on Earth?s surface has heightened awareness in Concentrating Solar Power, and more particularly in hybrid concepts. The integrated solar combined cycle system (ISCCS) is one of the more promising hybrid configurations for converting solar energy into electricity and it might become the technology of choice in the near future. This article reviews the R&D activities and published studies since the introduction of such a concept in the 1990s. The review includes the current status and describes different hybridizations of solar energy with natural gas, coal and other renewable energy sources. Furthermore, it provides in-depth analysis of real and expected R&D finding.

Omar Behar; Abdallah Khellaf; Kamal Mohammedi; Sabrina Ait-Kaci

2014-01-01T23:59:59.000Z

120

High thermal energy storage density molten salts for parabolic trough solar power generation.  

E-Print Network (OSTI)

??New alkali nitrate-nitrite systems were developed by using thermodynamic modeling and the eutectic points were predicted based on the change of Gibbs energy of fusion.… (more)

Wang, Tao

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Analysis of Parabolic Trough Solar Energy Integration into Different Geothermal Power Generation Concepts.  

E-Print Network (OSTI)

?? The change in climate as a consequence of anthropogenic activities is a subject ofmajor concerns. In order to reduce the amount of greenhouse gas… (more)

Vahland, Sören

2013-01-01T23:59:59.000Z

122

Engineering, Financial and Net Energy Performance, and Risk Analysis for Parabolic Trough Solar Power Plants  

E-Print Network (OSTI)

concentrating solar power plant. A set of engineering performance, financial and net energy models were developed as tools to predict a plant’s engineering performance, cost and energy payback. The models were validated by comparing the predicted results...

Luo, Jun

2014-08-08T23:59:59.000Z

123

Shenandoah parabolic dish solar collector  

SciTech Connect

The objectives of the Shenandoah, Georgia, Solar Total Energy System are to design, construct, test, and operate a solar energy system to obtain experience with large-scale hardware systems for future applications. This report describes the initial design and testing activities conducted to select and develop a collector that would serve the need of such a solar total energy system. The parabolic dish was selected as the collector most likely to maximize energy collection as required by this specific site. The fabrication, testing, and installation of the parabolic dish collector incorporating improvements identified during the development testing phase are described.

Kinoshita, G.S.

1985-01-01T23:59:59.000Z

124

PARABOLIC OBSTACLE PROBLEMS APPLIED TO FINANCE A ...  

E-Print Network (OSTI)

1. Introduction. 1.1. Background. The parabolic obstacle problem refers to finding the smallest supper-solution (for a given parabolic ... H. Shahgholian is supported by Swedish Research Council. 1 ...... MR MR2052937 (2005d:35276). [BD97].

2006-03-07T23:59:59.000Z

125

Life Cycle Greenhouse Gas Emissions of Trough and Tower Concentrating Solar Power Electricity Generation: Systematic Review and Harmonization  

SciTech Connect

In reviewing life cycle assessment (LCA) literature of utility-scale concentrating solar power (CSP) systems, this analysis focuses on reducing variability and clarifying the central tendency of published estimates of life cycle greenhouse gas (GHG) emissions through a meta-analytical process called harmonization. From 125 references reviewed, 10 produced 36 independent GHG emissions estimates passing screens for quality and relevance: 19 for parabolic trough (trough) technology and 17 for power tower (tower) technology. The interquartile range (IQR) of published estimates for troughs and towers were 83 and 20 grams of carbon dioxide equivalent per kilowatt-hour (g CO2-eq/kWh),1 respectively; median estimates were 26 and 38 g CO2-eq/kWh for trough and tower, respectively. Two levels of harmonization were applied. Light harmonization reduced variability in published estimates by using consistent values for key parameters pertaining to plant design and performance. The IQR and median were reduced by 87% and 17%, respectively, for troughs. For towers, the IQR and median decreased by 33% and 38%, respectively. Next, five trough LCAs reporting detailed life cycle inventories were identified. The variability and central tendency of their estimates are reduced by 91% and 81%, respectively, after light harmonization. By harmonizing these five estimates to consistent values for global warming intensities of materials and expanding system boundaries to consistently include electricity and auxiliary natural gas combustion, variability is reduced by an additional 32% while central tendency increases by 8%. These harmonized values provide useful starting points for policy makers in evaluating life cycle GHG emissions from CSP projects without the requirement to conduct a full LCA for each new project.

Burkhardt, J. J.; Heath, G.; Cohen, E.

2012-04-01T23:59:59.000Z

126

Plane and parabolic solar panels  

E-Print Network (OSTI)

We present a plane and parabolic collector that absorbs radiant energy and transforms it in heat. Therefore we have a panel to heat water. We study how to increment this capture of solar beams onto the panel in order to increase its efficiency in heating water.

Sales, J H O

2009-01-01T23:59:59.000Z

127

Plane and parabolic solar panels  

E-Print Network (OSTI)

We present a plane and parabolic collector that absorbs radiant energy and transforms it in heat. Therefore we have a panel to heat water. We study how to increment this capture of solar beams onto the panel in order to increase its efficiency in heating water.

J. H. O. Sales; A. T. Suzuki

2009-05-14T23:59:59.000Z

128

A Non-Pyramidal Rectangular-to-Trough Waveguide Transition and Pattern Reconfigurable Trough Waveguide Antenna  

E-Print Network (OSTI)

, rods, dielectrics, and other structures can create reconfigurable periodic line sources. These trough waveguide antennas (TWA) are then capable of providing both fixedfrequency and frequency-dependent beam steering. This was originally performed using...

Loizou, Loizos

2012-02-14T23:59:59.000Z

129

Solar Trough Power Plants: Office of Power Technologies (OPT) Success Stories Series Fact Sheet  

NLE Websites -- All DOE Office Websites (Extended Search)

Concentrating Solar Power Program Concentrating Solar Power Program Office of Solar Energy Technologies operate for 80% of the summer mid-peak hours and 66% of the winter mid-peak hours. A natural gas backup system supplements the solar capacity and contributes 25% of the plants' annual output. The SEGS plants use parabolic-trough solar collectors to capture the sun's energy and convert it to heat. In the SEGS design, the curved solar collectors focus sunlight onto a receiver pipe. Mechanical controls slowly rotate the collectors during the day, keeping them aimed at the sun as it travels across the sky. Synthetic oil flowing through the receiver pipe serves as the heat transfer medium. The collectors concentrate sunlight 30 to 60 times the normal intensity on the receiver, heating the oil as high as 735°F (390°C).

130

Modeling Photovoltaic and Concentrating Solar Power Trough Performance, Cost, and Financing with Solar Advisor Model  

SciTech Connect

A comprehensive solar technology systems analysis model, the Solar Advisor Model (SAM), has been developed to support the federal R&D community and the solar industry by staff at the National Renewable Energy Laboratory (NREL) and Sandia National Laboratory. This model is able to model the finances, incentives, and performance of flat-plate photovoltaic (PV), concentrating PV, and concentrating solar power (specifically, parabolic troughs). The primary function of the model is to allow users to investigate the impact of variations in performance, cost, and financial parameters to better understand their impact on key figures of merit. Figures of merit related to the cost and performance of these systems include, but aren't limited to, system output, system efficiencies, levelized cost of energy, return on investment, and system capital and O&M costs. SAM allows users to do complex system modeling with an intuitive graphical user interface (GUI). In fact, all tables and graphics for this paper are taken directly from the model GUI. This model has the capability to compare different solar technologies within the same interface, making use of similar cost and finance assumptions. Additionally, the ability to do parametric and sensitivity analysis is central to this model. There are several models within SAM to model the performance of photovoltaic modules and inverters. This paper presents an overview of each PV and inverter model, introduces a new generic model, and briefly discusses the concentrating solar power (CSP) parabolic trough model. A comparison of results using the different PV and inverter models is also presented.

Blair, N.; Mehos, M.; Christensen, C.; Cameron, C.

2008-01-01T23:59:59.000Z

131

Modeling Photovoltaic and Concentrating Solar Power Trough Performance, Cost, and Financing with the Solar Advisor Model: Preprint  

SciTech Connect

A comprehensive solar technology systems analysis model, the Solar Advisor Model (SAM), has been developed to support the federal R&D community and the solar industry by staff at the National Renewable Energy Laboratory (NREL) and Sandia National Laboratory. This model is able to model the finances, incentives, and performance of flat-plate photovoltaic (PV), concentrating PV, and concentrating solar power (specifically, parabolic troughs). The primary function of the model is to allow users to investigate the impact of variations in performance, cost, and financial parameters to better understand their impact on key figures of merit. Figures of merit related to the cost and performance of these systems include, but aren't limited to, system output, system efficiencies, levelized cost of energy, return on investment, and system capital and O&M costs. There are several models within SAM to model the performance of photovoltaic modules and inverters. This paper presents an overview of each PV and inverter model, introduces a new generic model, and briefly discusses the concentrating solar power (CSP) parabolic trough model. A comparison of results using the different PV and inverter models is also presented.

Blair, N.; Mehos, M.; Christensen, C.; Cameron, C.

2008-05-01T23:59:59.000Z

132

Geothermal Literature Review At Salton Trough Geothermal Area (1984) | Open  

Open Energy Info (EERE)

Trough Geothermal Area (1984) Trough Geothermal Area (1984) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Salton Trough Geothermal Area (1984) Exploration Activity Details Location Salton Trough Geothermal Area Exploration Technique Geothermal Literature Review Activity Date 1984 Usefulness not indicated DOE-funding Unknown Notes The melt zones of volcanic clusters was analyzed with recent geological and geophysical data for five magma-hydrothermal systems were studied for the purpose of developing estimates for the depth, volume and location of magma beneath each area. References Goldstein, N. E.; Flexser, S. (1 December 1984) Melt zones beneath five volcanic complexes in California: an assessment of shallow magma occurrences

133

Parabolic cylinder functions implemented in Matlab  

E-Print Network (OSTI)

Routines for computation of Weber's parabolic cylinder functions and their derivatives are implemented in Matlab for both moderate and great values of the argument. Standard, real solutions are considered. Tables of values are included.

E. Cojocaru

2009-01-15T23:59:59.000Z

134

Filamentation Time Diagnosis of Thinning Troughs and Cutoff Lows  

Science Journals Connector (OSTI)

This paper analyzes synoptic-scale trough-thinning processes using a filamentation time diagnostic. The filamentation time diagnostic is derived from the potential vorticity equation expressed in spherical coordinates in the horizontal plane and ...

Yu-Ming Tsai; Hung-Chi Kuo; Wayne H. Schubert

2010-06-01T23:59:59.000Z

135

CX-003976: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

76: Categorical Exclusion Determination 76: Categorical Exclusion Determination CX-003976: Categorical Exclusion Determination Development of a High-Concentration Low-Cost Parabolic Trough System for Baseload Concentrated Solar Power Generation CX(s) Applied: A9, B5.1 Date: 09/20/2010 Location(s): Arvada, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office The Department of Energy is proposing to provide federal funding to SkyFuel to develop and demonstrate an advanced low-cost Concentrated Solar Power (CSP) solar collector, using higher-concentration, higher-temperature parabolic trough technology, with the ultimate goal of reducing the cost of baseload utility-scale solar power generation. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-003976.pdf More Documents & Publications

136

Aeolian sediment transport pathways and aerodynamics at troughs Mary C. Bourke1  

E-Print Network (OSTI)

Aeolian sediment transport pathways and aerodynamics at troughs on Mars Mary C. Bourke1 School pathways and aerodynamics at troughs on Mars, J. Geophys. Res., 109, E07005, doi:10.1029/2003JE002155. 1

Bourke, Mary C.

137

Study Of a Solar Trough Concentrating System for Application of Solar Energy Refrigeration  

Science Journals Connector (OSTI)

A solar concentrating trough device has been constructed for further application of solar heating and power system or solar refrigeration. A model for both evacuated tube and copper tube heated by solar trough co...

Li Ming; Wang Liuling; Zhou Xizheng…

2009-01-01T23:59:59.000Z

138

A study of mobile trough genesis over the Yellow Sea - East China Sea region  

E-Print Network (OSTI)

analyzed. The troughs were selected from the objective climatology of mobile troughs by Lefevre and Nielsen-Gammon (1995). A quasigeostrophic potential vorticity (QGPV) and associated piecewise tendency diagnosis (PTD) technique developed by Nielsen...

Komar, Keith Nickolas

2012-06-07T23:59:59.000Z

139

A Review of Cold Fronts with Prefrontal Troughs and Wind Shifts DAVID M. SCHULTZ  

E-Print Network (OSTI)

A Review of Cold Fronts with Prefrontal Troughs and Wind Shifts DAVID M. SCHULTZ Cooperative with a pressure trough and a distinct wind shift at the surface. Many cold fronts, however, do not conform to this model--time series at a single surface station may possess a pressure trough and wind shift in the warm

Schultz, David

140

Seasonal variation of upper-level mobile trough development upstream of the Pacific storm track  

E-Print Network (OSTI)

of upper-level mobile troughs as they enter and exit the DZ as well as over the western Pacific, using Lefevre and Nielsen-Gammon's trough tracking data (1995). The relationship between deformation and trough intensification upstream of the Pacific storm...

Myoung, Boksoon

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Developments in the NAG library software for parabolic equations  

Science Journals Connector (OSTI)

The NAG Library parabolic partial differential equation (p.d.e ... Software and so offers a range of different space discretization methods that can be applied to...

M. Berzins

1990-01-01T23:59:59.000Z

142

Effects of environmental factors on the conversion efficiency of solar thermoelectric co-generators comprising parabola trough collectors and thermoelectric modules without evacuated tubular collector  

Science Journals Connector (OSTI)

Abstract Solar thermoelectric co-generators (STECGs) are an attractive means of supplying electric power and heat simultaneously and economically. Here we examine the effects of environmental factors on the conversion efficiencies of a new type of STECG comprising parabolic trough concentrators and thermoelectric modules (TEMs). Each TEM array was bonded with a solar selective absorber plate and directly positioned on the focal axis of the parabolic concentrator. Glass tubular collectors were not used to encase the TEMs. Although this makes the overall system simpler, the environmental effects become significant. Simulations show that the performance of such a system strongly depends on ambient conditions such as solar insolation, atmospheric temperature and wind velocity. As each of these factors increases, the thermal losses of the STECG system also increase, resulting in reduced solar conversion efficiency, despite the increased radiation absorption. However, the impact of these factors is relatively complicated. Although the electrical efficiency of the system increases with increasing solar insolation, it decreases with increasing ambient temperature and wind velocity. These results serve as a useful guide to the selection and installation of STECGs, particularly in Guangzhou or similar climate region.

Chao Li; Ming Zhang; Lei Miao; Jianhua Zhou; Yi Pu Kang; C.A.J. Fisher; Kaoru Ohno; Yang Shen; Hong Lin

2014-01-01T23:59:59.000Z

143

Parabolic refined invariants and Macdonald polynomials  

E-Print Network (OSTI)

A string theoretic derivation is given for the conjecture of Hausel, Letellier, and Rodriguez-Villegas on the cohomology of character varieties with marked points. Their formula is identified with a refined BPS expansion in the stable pair theory of a local root stack, generalizing previous work of the first two authors in collaboration with G. Pan. Haiman's geometric construction for Macdonald polynomials is shown to emerge naturally in this context via geometric engineering. In particular this yields a new conjectural relation between Macdonald polynomials and refined local orbifold curve counting invariants. The string theoretic approach also leads to a new spectral cover construction for parabolic Higgs bundles in terms of holomorphic symplectic orbifolds.

Chuang, Wu-yen; Donagi, Ron; Pantev, Tony

2013-01-01T23:59:59.000Z

144

Thermal Analysis of Compound—Parabolic Concentrating Solar Energy Collectors  

Science Journals Connector (OSTI)

Despite the vast attention devoted recently to the design and development of effective collectors for harnessing solar energy at medium and high temperatures (>100° ... in the design of the compound parabolic con...

B. Norton; D. E. Prapas

1987-01-01T23:59:59.000Z

145

Bubble stabilized discontinuous Galerkin method for parabolic and elliptic problems  

Science Journals Connector (OSTI)

In this paper we give an analysis of a bubble stabilized discontinuous Galerkin method for elliptic and parabolic problems. The method consists of stabilizing the numerical scheme by enriching the discontinuou...

Erik Burman; Benjamin Stamm

2010-08-01T23:59:59.000Z

146

Evolution and preservation of closed linear troughs in the Hueco bolson of west Texas  

E-Print Network (OSTI)

, have been and are now taking place along the length of the troughs. Those adjustments act to offset the effects of aeolian processes, preserving the troughs over time as areas of depression. Several minable sand and gavel deposits have been located...

Burrell, Jonathan K

2012-06-07T23:59:59.000Z

147

Seismic reflection data analysis of the Oriente and Swan Fracture Zones bounding the Cayman Trough  

E-Print Network (OSTI)

dredgings within the trough and recovered serpentinite, orthopyroxene, clinopyroxene, spinel and probably psuedomorphs after olivine. This indicated to them that the serpentinite samples were serpentinized spinel Iherzolite. This original mineral... dredgings within the trough and recovered serpentinite, orthopyroxene, clinopyroxene, spinel and probably psuedomorphs after olivine. This indicated to them that the serpentinite samples were serpentinized spinel Iherzolite. This original mineral...

Tinker, Mary Norris

2012-06-07T23:59:59.000Z

148

3X compound parabolic concentrating (CPC) solar energy collector. Final technical report  

SciTech Connect

Chamberlain engineers designed a 3X compound parabolic concentrating (CPC) collector for the subject contract. The collector is a completely housed, 105.75 x 44.75 x 10.23-inch, 240-pound unit with six each evacuated receiver assemblies, a center manifold and a one-piece glass cover. A truncated version of a CPC trough reflector system and the General Electric Company tubular evacuated receiver have been integrated with a mass producible collector design suitable for operation at 250 to 450/sup 0/F. The key criterion for optimization of the design was minimization of the cost per Btu collected annually at an operating temperature of 400/sup 0/F. The reflector is a 4.1X design truncated to a total height of 8.0 inches with a resulting actual concentration ratio of 2.6 to 1. The manifold is an insulated area housing the fluid lines which connect the six receivers in series with inlet and outlet tubes extending from one side of the collector at the center. The reflectors are polished, anodized aluminum which are shaped by the roll form process. The housing is painted, galvanized steel, and the cover glass is 3/16-inch thick tempered, low iron glass. The collector requires four slope adjustments per year for optimum effectiveness. Chamberlain produced ten 3X CPC collectors for the subject contract. Two collectors were used to evaluate assembly procedures, six were sent to the project officer in Albuquerque, New Mexico, one was sent to Argonne National Laboratory for performance testing and one remained with the Company. A manufacturing cost study was conducted to estimate limited mass production costs, explore cost reduction ideas and define tooling requirements. The final effort discussed shows the preliminary design for application of a 3X CPC solar collector system for use in the Iowa State Capitol complex.

Ballheim, R.W.

1980-04-25T23:59:59.000Z

149

Effects of Monsoon Trough Intraseasonal Oscillation on Tropical Cyclogenesis over the Western North Pacific  

Science Journals Connector (OSTI)

The effects of intraseasonal oscillation (ISO) of the western North Pacific (WNP) monsoon trough on tropical cyclone (TC) formation were investigated using the Advanced Research Weather Research and Forecasting (ARW) Model. A weak vortex was ...

Xi Cao; Tim Li; Melinda Peng; Wen Chen; Guanghua Chen

2014-12-01T23:59:59.000Z

150

Analytic, axisymmetric MHD spheromak type equilibria in parabolic coordinates  

Science Journals Connector (OSTI)

Analytic equilibria of a spheromak type plasma are obtained for finite pressure and poloidal current profiles as solutions of the Grad-Shafranov equation in parabolic coordinates. Simple force-free configurations are determined which ensure plasma confinement within two intersecting paraboloids (parabolomak). Plasma elongation as a function of plasma pressure as well as the minimum value of the safety factor are also estimated.

G.N. Throumoulopoulos; G. Pantis

1987-01-01T23:59:59.000Z

151

IR Spectrometer Using 90-degree Off-axis Parabolic Mirrors  

SciTech Connect

A gated spectrometer has been designed for real-time, pulsed infrared (IR) studies at the National Synchrotron Light ource at the Brookhaven National Laboratory. A pair of 90-degree, off-axis parabolic mirrors are used to relay the light from an entrance slit to an output IR recording camera. With an initial wavelength range of 1500–4500 nm required, gratings could not be used in the spectrometer because grating orders would overlap. A magnesium oxide prism, placed between these parabolic mirrors, serves as the dispersion element. The spectrometer is doubly telecentric. With proper choice of the air spacing between the prism and the second parabolic mirror, any spectral region of interest within the InSb camera array’s sensitivity region can be recorded. The wavelengths leaving the second parabolic mirror are collimated, thereby relaxing the camera positioning tolerance. To set up the instrument, two different wavelength (visible) lasers are introduced at the entrance slit and made collinear with the optical axis via flip mirrors. After dispersion by the prism, these two laser beams are directed to tick marks located on the outside housing of the gated IR camera. This provides first-order wavelength calibration for the instrument. Light that is reflected off the front prism face is coupled into a high-speed detector to verify steady radiance during the gated spectral imaging. Alignment features include tick marks on the prism and parabolic mirrors. This instrument was designed to complement singlepoint pyrometry, which provides continuous time histories of a small collection of spots from shock-heated targets.

Robert M. Malone, Richard, G. Hacking, Ian J. McKenna, and Daniel H. Dolan

2008-09-02T23:59:59.000Z

152

Phase II Final Report  

SciTech Connect

The SkyTrough DSP will advance the state-of-the-art in parabolic troughs for utility applications, with a larger aperture, higher operating temperature, and lower cost. The goal of this project was to develop a parabolic trough collector that enables solar electricity generation in the 2020 marketplace for a 216MWe nameplate baseload power plant. This plant requires an LCOE of 9¢/kWhe, given a capacity factor of 75%, a fossil fuel limit of 15%, a fossil fuel cost of $6.75/MMBtu, $25.00/kWht thermal storage cost, and a domestic installation corresponding to Daggett, CA. The result of our optimization was a trough design of larger aperture and operating temperature than has been fielded in large, utility scale parabolic trough applications: 7.6m width x 150m SCA length (1,118m2 aperture), with four 90mm diameter × 4.7m receivers per mirror module and an operating temperature of 500°C. The results from physical modeling in the System Advisory Model indicate that, for a capacity factor of 75%: The LCOE will be 8.87¢/kWhe. SkyFuel examined the design of almost every parabolic trough component from a perspective of load and performance at aperture areas from 500 to 2,900m2. Aperture-dependent design was combined with fixed quotations for similar parts from the commercialized SkyTrough product, and established an installed cost of $130/m2 in 2020. This project was conducted in two phases. Phase I was a preliminary design, culminating in an optimum trough size and further improvement of an advanced polymeric reflective material. This phase was completed in October of 2011. Phase II has been the detailed engineering design and component testing, which culminated in the fabrication and testing of a single mirror module. Phase II is complete, and this document presents a summary of the comprehensive work.

Schuknecht, Nate [Project Manager; White, David [Principle Investigator; Hoste, Graeme [Research Engineer

2014-09-11T23:59:59.000Z

153

Solar Trough Organic Rankine Electricity System (STORES) Stage 1: Power Plant Optimization and Economics; November 2000 -- May 2005  

SciTech Connect

Report regarding a Stage 1 Study to further develop the concept of the Solar Trough Organic Rankine Cycle Electricity Systems (STORES).

Prabhu, E.

2006-03-01T23:59:59.000Z

154

Project Profile: Reducing the Cost of Thermal Energy Storage...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power Plants Project Profile: Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power...

155

Development of Molten-Salt Heat Trasfer Fluid Technology for...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Development of Molten-Salt Heat Trasfer Fluid Technology for Parabolic Trough Solar Power Plants Development of Molten-Salt Heat Trasfer Fluid Technology for Parabolic Trough Solar...

156

Effectiveness of solar water-lift system with parabolic cylindrical solar energy collector and jet pump  

Science Journals Connector (OSTI)

Formulas are presented and a computer calculation program is implemented for determining the energy efficiency of a solar water-lift system module with a parabolic...

S. F. Ergashev

2007-03-01T23:59:59.000Z

157

The integrated compound parabolic concentrator: From development to demonstration  

SciTech Connect

The authors describe the fabrication, testing and application of the Integrated Compound Parabolic Concentrator (ICPC) to solar cooling. The cooling technology is a double effect absorption cycle chiller operating at 165 C. The design parameters are optimized for this temperature range. The optical and mechanical design of the solar collector is chosen for compatibility with mass production. A project to employ approximately 350 of these collector tubes to drive a 20 ton commercial double effect chiller on an office building in Sacramento, CA has started. The authors expect the system to be operational this year.

Winston, R.; O`Gallagher, J.J. [Univ. of Chicago, IL (United States); Duff, W.S. [Colorado State Univ., Fort Collins, CO (United States); Cavallaro, A. [Solar Enterprises International, Chicago, IL (United States)

1997-12-31T23:59:59.000Z

158

Fish remains (Elasmobranchii, Actinopterygii) from the Late Cretaceous of1 the Benue Trough, Nigeria2  

E-Print Network (OSTI)

Fish remains (Elasmobranchii, Actinopterygii) from the Late Cretaceous of1 the Benue Trough address: romain.vullo@univ-rennes1.fr9 10 Abstract11 Selachian and ray-finned fish remains from various Cenomanian­early Turonian and25 Maastrichtian) created opportunities for the dispersal of many marine fish

159

An Air-Based Cavity-Receiver for Solar Trough Concentrators Roman Bader  

E-Print Network (OSTI)

that uses air as the heat transfer fluid is proposed for a novel solar trough concentrator design, when the heat transfer fluid (HTF) has low volumetric heat capacity and thermal conductivity for a heat exchanger between HTF and thermal storage medium; and 4) costs for the heat transfer fluid

160

Effect of animal density and trough placement on drinking behavior and dehydration in slaughter horses  

E-Print Network (OSTI)

The effect of horse density and trough placement on aphics. latency to drink and the amount of time spent drinking water on-board a semi-trailer were determined. Three experiments using 19, 20, and 24 slaughter-type horses, ranging in body condition...

Gibbs, Amy Elizabeth

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

OPTICAL DESIGN OF A NOVEL 2-STAGE SOLAR TROUGH CONCENTRATOR BASED ON PNEUMATIC POLYMERIC  

E-Print Network (OSTI)

of a solar thermal power plant [1,2]. An innovative concept for fabricating trough concentrators based concrete frame of rectangular shape. The advantages are five- folded: Fig. 1. Scheme of conceptual design;1) the concrete structure is more rigid and stronger than a conventional metallic frame; 2) wind induced

162

Two parabolic equations for propagation in layered poro-elastic media  

E-Print Network (OSTI)

Two parabolic equations for propagation in layered poro-elastic media Adam M. Metzlera) Applied Space Center, Mississippi 39529 Jon M. Collis Colorado School of Mines, Golden, Colorado 80401 (Received.40.Fz, 43.30.Ma [TFD] Pages: 246­256 I. INTRODUCTION The parabolic equation method is accurate

163

Vortices and Rossby waves in cylinder wakes on a parabolic -plane observed by altimetric imaging velocimetry  

E-Print Network (OSTI)

, geostrophic and gradient wind velocity, and potential vorticity fields with very high spatial resolutionVortices and Rossby waves in cylinder wakes on a parabolic -plane observed by altimetric imaging in the wake of a circular cylinder are investigated in a rotating parabolic polar -plane fluid. This system

Afanassiev, Iakov

164

Fifth parabolic dish solar thermal power program annual review: proceedings  

SciTech Connect

The primary objective of the Review was to present the results of activities within the Parabolic Dish Technology and Module/Systems Development element of the Department of Energy's Solar Thermal Energy Systems Program. The Review consisted of nine technical sessions covering overall Project and Program aspects, Stirling and Brayton module development, concentrator and engine/receiver development, and associated hardware and test results to date; distributed systems operating experience; international dish development activities; and non-DOE-sponsored domestic dish activities. A panel discussion concerning business views of solar electric generation was held. These Proceedings contain the texts of presentations made at the Review, as submitted by their authors at the beginning of the Review; therefore, they may vary slightly from the actual presentations in the technical sessions.

None

1984-03-01T23:59:59.000Z

165

Solar trough concentration for fresh water production and waste water treatment  

Science Journals Connector (OSTI)

The present paper examines the concept of utilizing trough type solar concentration plants for water production, remediation and waste treatment. Solar trough plants are a mature technology which deserves to be diffused throughout the European Union and in the partner countries of the Mediterranean Area. The present study is intended to find applications of the solar through concentration technology beyond heat and refrigeration. At the present stage, a number of possibilities have been identified; the main ones which will be considered here are related to clean water production by processes such as solar distillation, atmospheric condensation, and waste processing. Although the technical feasibility of the proposed applications is not in discussion, before attempting to put such applications into practice, we’ll discuss their potential economical and environmental benefits in comparison to existing solutions.

A. Scrivani; T. El Asmar; U. Bardi

2007-01-01T23:59:59.000Z

166

Project Profile: Low-Cost Solar Thermal Collector | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Solar Thermal Collector Project Profile: Low-Cost Solar Thermal Collector SunTrough Energy logo SunTrough, under the Baseload CSP FOA, is developing a new class of solar...

167

Comparison of Fresnel lenses and parabolic mirrors as solar energy concentrators  

Science Journals Connector (OSTI)

This paper compares the gain that can be achieved with a one- or two-stage concentrator, when the first stage is a Fresnel lens or a parabolic mirror, as a function of the luminosity...

Lorenzo, E; Luque, A

1982-01-01T23:59:59.000Z

168

Stability in terms of two measures for a class of semilinear impulsive parabolic equations  

SciTech Connect

The problem of stability in terms of two measures is considered for semilinear impulsive parabolic equations. A new version of the comparison method is proposed, and sufficient conditions for stability in terms of two measures are obtained on this basis. An example of a hybrid impulsive system formed by a system of ordinary differential equations coupled with a partial differential equation of parabolic type is given. The efficiency of the described approaches is demonstrated. Bibliography: 24 titles.

Dvirnyj, Aleksandr I; Slyn'ko, Vitalij I

2013-04-30T23:59:59.000Z

169

Trapping of electrons in troughs of self generated electromagnetic standing waves in a bounded plasma column  

SciTech Connect

Observations and measurements are reported on electron trapping in troughs of self-generated electromagnetic standing waves in a bounded plasma column confined in a minimum-B field. The boundaries are smaller than the free space wavelength of the waves. Earlier work of researchers primarily focused upon electron localization effects induced by purely electrostatic perturbation. We demonstrate the possibility in the presence of electromagnetic standing waves generated in the bounded plasma column. The electron trapping is verified with electrostatic measurements of the plasma floating potential, electromagnetic measurements of the wave field profile, and optical intensity measurements of Argon ionic line at 488?nm. The experimental results show a reasonably good agreement with predictions of a Monte Carlo simulation code that takes into account all kinematical and dynamical effects in the plasma in the presence of bounded waves and external fields.

Bhattacharjee, Sudeep; Sahu, Debaprasad; Pandey, Shail; Chatterjee, Sanghomitro [Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208016 (India)] [Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208016 (India); Dey, Indranuj [Department of Advanced Energy Engineering Science, Kyushu University, Kasuga Kouen 6-1, Kasuga City 816-8580 (Japan)] [Department of Advanced Energy Engineering Science, Kyushu University, Kasuga Kouen 6-1, Kasuga City 816-8580 (Japan); Roy Chowdhury, Krishanu [Max Planck Institute for the Physics of Complex System, Dresden 01187 (Germany)] [Max Planck Institute for the Physics of Complex System, Dresden 01187 (Germany)

2014-01-15T23:59:59.000Z

170

Phenomenological study of parabolic and spherical indentation of elastic-ideally plastic material  

E-Print Network (OSTI)

Phenomenological study of parabolic and spherical indentation of elastic-ideally plastic material O ideally plastic materials was carried out by using precise results of finite elements calculations behaviour is found. Two elastic-plastic regimes and two plastic regimes are observed for materials of very

Paris-Sud XI, Université de

171

Nuclear spin dynamics in parabolic quantum wells Ionel Tifrea* and Michael E. Flatte  

E-Print Network (OSTI)

Nuclear spin dynamics in parabolic quantum wells Ionel T¸ifrea* and Michael E. Flatte´ Department March 2004 We present a detailed analytical and numerical analysis of the nuclear spin dynamics of the electronic wave function in small electric fields. The nuclear spin relaxation via the hyperfine interaction

Flatte, Michael E.

172

Experimental testing of the variable rotated elastic parabolic Harry J. Simpsona)  

E-Print Network (OSTI)

Experimental testing of the variable rotated elastic parabolic equation Harry J. Simpsona) Physical Street, Golden, Colorado 80401 Raymond J. Soukup Acoustics Division Code 7144, Naval Research Laboratory and the ability of the model to produce benchmark-quality agreement with experimental data [J. M. Collis et al., J

173

Parabolic equation solution of seismo-acoustics problems involving variations in bathymetry and sediment thickness  

E-Print Network (OSTI)

and sediment thickness Jon M. Collisa and William L. Siegmann Rensselaer Polytechnic Institute110 8th Street within elastic sediment layers. When these methods are implemented together, the parabolic equation method can be applied to problems involving variations in bathymetry and the thickness of sediment layers

174

Design of a Thermal Imaging Diagnostic Using 90-Degree, Off-Axis, Parabolic Mirrors  

SciTech Connect

Thermal imaging is an important, though challenging, diagnostic for shockwave experiments. Shock-compressed materials undergo transient temperature changes that cannot be recorded with standard (greater than ms response time) infrared detectors. A further complication arises when optical elements near the experiment are destroyed. We have designed a thermal-imaging system for studying shock temperatures produced inside a gas gun at Sandia National Laboratories. Inexpensive, diamond-turned, parabolic mirrors relay an image of the shocked target to the exterior of the gas gun chamber through a sapphire vacuum port. The 3000–5000-nm portion of this image is directed to an infrared camera which acquires a snapshot of the target with a minimum exposure time of 150 ns. A special mask is inserted at the last intermediate image plane, to provide dynamic thermal background recording during the event. Other wavelength bands of this image are split into high-speed detectors operating at 900–1700 nm, and at 1700–3000 nm for timeresolved pyrometry measurements. This system incorporates 90-degree, off-axis parabolic mirrors, which can collect low f/# light over a broad spectral range, for high-speed imaging. Matched mirror pairs must be used so that aberrations cancel. To eliminate image plane tilt, proper tip-to-tip orientation of the parabolic mirrors is required. If one parabolic mirror is rotated 180 degrees about the optical axis connecting the pair of parabolic mirrors, the resulting image is tilted by 60 degrees. Different focal-length mirrors cannot be used to magnify the image without substantially sacrificing image quality. This paper analyzes performance and aberrations of this imaging diagnostic.

Malone, Robert M.; Becker, Steven A.; Dolan, Daniel H.; Hacking, Richard G.; Hickman, Randy J.; Kaufman, Morris I.; Stevens, Gerald D.; Turley, William D.

2006-09-01T23:59:59.000Z

175

Evidence of patchy hydrogen reionization from an extreme Ly$\\alpha$ trough below redshift six  

E-Print Network (OSTI)

We report the discovery of an extremely long ($\\sim$110 Mpc/$h$) and dark ($\\tau_{\\rm eff} \\gtrsim 7$) Ly$\\alpha$ trough extending down to $z \\simeq 5.5$ towards the $z_{\\rm em} \\simeq 6.0$ quasar ULAS J0148+0600. We use these new data in combination with Ly$\\alpha$ forest measurements from 42 quasars at $4.5 \\le z_{\\rm em} \\le 6.4$ to conduct an updated analysis of the line-of-sight variance in the intergalactic Ly$\\alpha$ opacity over $4 \\le z \\le 6$. We find that the scatter in transmission among lines of sight near $z \\sim 6$ significantly exceeds theoretical expectations for either a uniform ultraviolet background (UVB) or simple fluctuating UVB models in which the mean free path to ionizing photons is spatially invariant. The data, particularly near $z \\simeq 5.6$-5.8, instead require fluctuations in the volume-weighted hydrogen neutral fraction that are a factor three or more beyond those expected from density variations alone. We argue that these fluctuations are most likely driven by large-scale vari...

Becker, George D; Madau, Piero; Pettini, Max; Ryan-Weber, Emma V; Venemans, Bram P

2014-01-01T23:59:59.000Z

176

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

31 - 21640 of 29,416 results. 31 - 21640 of 29,416 results. Download CX-003976: Categorical Exclusion Determination Development of a High-Concentration Low-Cost Parabolic Trough System for Baseload Concentrated Solar Power Generation CX(s) Applied: A9, B5.1 Date: 09/20/2010 Location(s): Arvada, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-003976-categorical-exclusion-determination Download CX-003978: Categorical Exclusion Determination Geothermal Technologies Program: Blaine School District Geothermal Project (Phase 2) CX(s) Applied: B5.1 Date: 09/20/2010 Location(s): Idaho Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-003978-categorical-exclusion-determination

177

RECIPIENT:SkyFuel, Inc.  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SkyFuel, Inc. SkyFuel, Inc. u.s. DEPARTl.\IIEN T OF ENER qY EERE PROJECT MANAGEMENT CENTER NEPA DETERlvIINATION Page 1 of2 STATE: CO PROJECT TITL E: SkyFuel 8aseload Parabolic Trough Funding Opportunity Announcement Number Procurement I.nstrument N mber NEPA Control Number CID Number Baseload DE-EEOO03584 GFO-OOO3584-002 G03584 Based on my review oftbe information concerning the proposed achon, as NEP] Compliance Officer (authorized under DOE Order 4Sl.tA), I have made the followmg determmatlOn: ex, EA, EIS APPENDIX AND NUMBER: Descnptlon : 83.6 Small-scale Sltmg, construction, modification, operation, and de mmlSSlonlng of faCilities for smaliscale research research and and development projects; conventionallaboralory 0 rations (such as preparation of chemical

178

Categorical Exclusion Determinations: Golden Field Office | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

July 12, 2012 July 12, 2012 CX-008585: Categorical Exclusion Determination Solar TAC - Thermal Energy Storage Test Facility CX(s) Applied: A9, A11, B1.15, B3.6 Date: 07/12/2012 Location(s): Colorado Offices(s): Golden Field Office July 12, 2012 CX-008583: Categorical Exclusion Determination California State Energy Program Annual Formula CX(s) Applied: A9, A11 Date: 07/12/2012 Location(s): California Offices(s): Golden Field Office July 12, 2012 CX-008592: Categorical Exclusion Determination Hawaii State Energy Program Annual Formula CX(s) Applied: A9, A11 Date: 07/12/2012 Location(s): Hawaii Offices(s): Golden Field Office July 11, 2012 CX-008586: Categorical Exclusion Determination SkyFuel Baseload Parabolic Trough CX(s) Applied: B3.6, B5.15 Date: 07/11/2012 Location(s): Colorado

179

Categorical Exclusion Determinations: B5.1 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0, 2010 0, 2010 CX-003976: Categorical Exclusion Determination Development of a High-Concentration Low-Cost Parabolic Trough System for Baseload Concentrated Solar Power Generation CX(s) Applied: A9, B5.1 Date: 09/20/2010 Location(s): Arvada, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office September 20, 2010 CX-003975: Categorical Exclusion Determination State Energy Program - American Recovery and Reinvestment Act Green Jobs Training Program - College of the Desert CX(s) Applied: B5.1 Date: 09/20/2010 Location(s): California Office(s): Energy Efficiency and Renewable Energy, Golden Field Office September 20, 2010 CX-003974: Categorical Exclusion Determination State Energy Program - American Recovery and Reinvestment Act: Soliant Energy 40 Megawatt Solar Manufacturing Plant

180

Analysis of predicted and measured performance of an integrated compound parabolic concentrator (ICPC)  

SciTech Connect

A variety of configurations of evacuated Integrated Compound Parabolic Concentrator (ICPC) tubes have been under development for many years. A particularly favorable optical design corresponds to the unit concentration limit for a fin CPC solution which is then coupled to a practical, thin, wedge-shaped absorber. Prototype collector modules using tubes with two different fin orientations (horizontal and vertical) have been fabricated and tested. Comprehensive measurements of the optical characteristics of the reflector and absorber have been used together with a detailed ray trace analysis to predict the optical performance characteristics of these designs. The observed performance agrees well with the predicted performance.

Winston, R.; O'Gallagher, J.J.; Muschaweck, J.; Mahoney, A.R.; Dudley, V.

1999-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Investigation of Q-tubes stability using the piecewise parabolic potential  

E-Print Network (OSTI)

We analyze the classical stability of Q-tubes --- charged extended objects in $(3+1)$-dimensional complex scalar field theory. Explicit solutions were found analytically in the piecewise parabolic potential. Our choice of potential allows us to construct a powerful method of stability investigation. We check that in the case of the zero winding number $n=0$, the previously known stability condition $\\partial^2E/\\partial Q^21$ becomes unstable towards the decay into the $n$ vortices with the single winding number.

E. Nugaev; A. Shkerin

2014-04-12T23:59:59.000Z

182

Initial evolution of supports of solutions of quasilinear parabolic equations with degenerate absorption potential  

SciTech Connect

The propagation of supports of solutions of second-order quasilinear parabolic equations is studied; the equations are of the type of nonstationary diffusion, having semilinear absorption with an absorption potential which degenerates on the initial plane. We find sufficient conditions, which are sharp in a certain sense, on the relationship between the boundary regime and the type of degeneration of the potential to ensure the strong localization of solutions. We also establish a weak localization of solutions for an arbitrary potential which degenerates only on the initial plane. Bibliography: 12 titles.

Stepanova, Ekaterina V; Shishkov, Andrey E

2013-03-31T23:59:59.000Z

183

On the Piecewise Parabolic Method for Compressible Flow with Stellar Equations of State  

E-Print Network (OSTI)

The piecewise parabolic method and related schemes are widely used to model stellar flows. Several different methods for extending the validity of these methods to a general equation of state have been proposed over time, but direct comparisons amongst one-another and exact solutions with stellar equations of state are not widely available. We introduce some simple test problems with exact solutions run with a popular stellar equation of state and test how two existing codes with different approaches to incorporating general gases perform. The source code for generating the exact solutions is made available.

Zingale, M

2015-01-01T23:59:59.000Z

184

Solar reforming of methane in a direct absorption catalytic reactor on a parabolic dish  

SciTech Connect

The concept of solar driven chemical reactions in a commercial-scale volumetric receiver/reactor on a parabolic concentrator was successfully demonstrated in the CAtalytically Enhanced Solar Absorption Receiver (CAESAR) test. Solar reforming of methane (CH{sub 4}) with carbon dioxide (CO{sub 2}) was achieved in a 64-cm diameter direct absorption reactor on a parabolic dish capable of 150 kW solar power. The reactor was a catalytic volumetric absorber consisting of a multi-layered, porous alumina foam disk coated with rhodium (Rh) catalyst. The system was operated during both steady-state and solar transient (cloud passage) conditions. The total solar power absorbed reached values up to 97 kW and the maximum methane conversion was 70%. Receiver thermal efficiencies ranged up to 85% and chemical efficiencies peaked at 54%. The absorber performed satisfactorily in promoting the reforming reaction during the tests without carbon formation. However, problems of cracking and degradation of the porous matrix, nonuniform dispersion of the Rh through the absorber, and catalyst deactivation due to sintering and possible encapsulation, must be resolved to achieve long-term operation and eventual commercialization. 17 refs., 11 figs., 1 tab.

Muir, J.F.; Hogan, R.E. Jr.; Skocypec, R.D. (Sandia National Labs., Albuquerque, NM (USA)); Buck, R. (Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V. (DLR), Stuttgart (Germany, F.R.). Inst. fuer Technische Thermodynamik)

1990-01-01T23:59:59.000Z

185

Commercialization of High-Temperature Solar Selective Coating: Cooperative Research and Development Final Report, CRADA Number CRD-08-300  

SciTech Connect

The goal for Concentrating Solar Power (CSP) technologies is to produce electricity at 15 cents/kilowatt-hour (kWh) with six hours of thermal storage in 2015 (intermediate power) and close to 10 cents/kWh with 12-17 hours of thermal storage in 2020 (baseload power). Cost reductions of up to 50% to the solar concentrator are targeted through technology advances. The overall solar-to-electric efficiency of parabolic-trough solar power plants can be improved and the cost of solar electricity can be reduced by improving the properties of the selective coating on the receiver and increasing the solar-field operating temperature to >450 degrees C. New, more-efficient selective coatings will be needed that have both high solar absorptance and low thermal emittance at elevated temperatures. Conduction and convection losses from the hot absorber surface are usually negligible for parabolic trough receivers. The objective is to develop new, more-efficient selective coatings with both high solar absorptance (..alpha.. > 0.95) and low thermal emittance (..epsilon.. < 0.08 @ 450 degrees C) that are thermally stable above 450 degrees C, ideally in air, with improved durability and manufacturability, and reduced cost.

Gray, M. H.

2014-01-01T23:59:59.000Z

186

Orbital magnetism in ensembles of parabolic potentials M. O. Terra, M. L. Tiago, and M. A. M. de Aguiar  

E-Print Network (OSTI)

-970 Campinas, Sa~o Paulo, Brazil Received 15 June 1998 We study the magnetic susceptibility of an ensemble from that of billiards. When averaged over the Fermi energy the susceptibility exhibits a large by parabolic quantum wells at finite temperatures. The interest in such confined mesoscopic systems was renewed

de Aguiar, Marcus A. M.

187

Local strong solutions of a parabolic system related to the Boussinesq approximation for buoyancy-driven ow  

E-Print Network (OSTI)

Local strong solutions of a parabolic system related to the Boussinesq approximation for buoyancy propose a modi...cation of the classical Navier-Stokes-Boussinesq system of equations, which governs and the global-in-time existence of weak solutions will be addressed in forthcoming work. Keywords. Boussinesq

Díaz, Jesús Ildefonso

188

Self-averaging in time reversal for the parabolic wave equation Guillaume Bal George Papanicolaou y Leonid Ryzhik z  

E-Print Network (OSTI)

is the solution of a transport equation. 1 Introduction In time-reversal experiments a signal emitted, in the regimes of random geometrical optics and radiative transfer (transport), was studied in [2, 3]. We also in the radiative transfer regime using the parabolic wave equation, when the waves interact fully with the random

Bal, Guillaume

189

IEEE JOURNAL OF OCEANIC ENGINEERING, VOL. 34, NO. 4, OCTOBER 2009 617 Extension of the Rotated Elastic Parabolic Equation  

E-Print Network (OSTI)

and outgoing waves, and assuming that outgoing energy dominates. This assumption is that two-way propagation ( 5 ). The assumption will break down as backscattered energy begins to significantly . The parabolic equation method is an efficient solution technique for problems with outward energy propagation

190

Precise asymptotics for the parabolic Anderson model with a moving catalyst or trap  

E-Print Network (OSTI)

We consider the solution $u\\colon [0,\\infty) \\times\\mathbb{Z}^d\\rightarrow [0,\\infty) $ to the parabolic Anderson model, where the potential is given by $(t,x)\\mapsto\\gamma\\delta_{Y_t}\\left(x\\right)$ with $Y$ a simple symmetric random walk on $\\mathbb{Z}^d$. Depending on the parameter $\\gamma\\in[-\\infty,\\infty)$, the potential is interpreted as a randomly moving catalyst or trap. In the trap case, i.e., $\\gamma0$), we consider the solution $u$ from the perspective of the catalyst, i.e., the expression $u(t,Y_t+x)$. Focusing on the cases where moments grow exponentially fast (that is, $\\gamma$ sufficiently large), we describe the moment asymptotics of the expression above up to equivalence. Here, it is crucial to prove the existence of a principal eigenfunction of the corresponding Hamilton operator. While this is well-established for the first moment, we have found an extension to higher moments.

Schnitzler, Adrian

2010-01-01T23:59:59.000Z

191

Study of degenerate parabolic system modeling the hydrogen displacement in a nuclear waste repository  

E-Print Network (OSTI)

Our goal is the mathematical analysis of a two phase (liquid and gas) two components (water and hydrogen) system modeling the hydrogen displacement in a storage site for radioactive waste. We suppose that the water is only in the liquid phase and is incompressible. The hydrogen in the gas phase is supposed compressible and could be dissolved into the water with the Henry's law. The flow is described by the conservation of the mass of each components. The model is treated without simplified assumptions on the gas density. This model is degenerated due to vanishing terms. We establish an existence result for the nonlinear degenerate parabolic system based on new energy estimate on pressures.

Caro, Florian; Saad, Mazen

2012-01-01T23:59:59.000Z

192

Vanguard I solar parabolic dish-Stirling engine module. Final report, May 28, 1982-September 30, 1984  

SciTech Connect

Advanco Corporation and the US Department of Energy entered into a cooperative agreement in May 1982 for the design, manufacture, and test of a 25-kWe solar parabolic dish module utilizing a Stirling engine power conversion unit. The product of the cooperative agreement is the Vanguard solar parabolic dish-Stirling engine module. It was designed, fabricated, and shop assembled in Los Angeles, California, and Malmoe, Sweden, and was then installed and tested at Rancho Mirage, California, in accordance with the agreement's specifications. The design features simple fabrication and assembly techniques, low cost, and high operating efficiency. The cover displays the Vanguard module operating on-sun. The concept combines the United Stirling AB (USAB) 4-95 Solar II Stirling engine, the Jet Propulsion Laboratory (JPL) developed mirror facets, the Rockwell/Advanco exocentric gimbal mechanism (EGM), the advanced USAB receiver, and a dry, integrated heat rejection system.

Washom, B.J.

1984-09-30T23:59:59.000Z

193

Flux-difference split parabolized Navier-Stokes algorithm for non-equilibrium chemically reacting flows  

SciTech Connect

A flux-difference split explicit finite-difference algorithm is presented for solving the parabolized form of the equations governing three-dimensional nonequilibrium chemically reacting flows. The algorithm is based on an explicit noniterative, upwind space-marching scheme developed by Korte, but differs in that the unsteady Riemann problem, rather than the steady Riemann problem, is solved. The algorithm allows either a second or an approximately third-order accurate upwind treatment of the convection terms by employing the unsteady approximate Riemann solver of Roe. The source terms of the species transport equations are treated in either an explicit or implicit manner, and the species diffusion terms are modeled with either a Fickian or a multicomponent model. A validation of the algorithm is performed by comparing computational results with the 2-D Mach 14, 15 degree compression-corner data of Holden. The three-dimensional capability of the algorithm is demonstrated by computing Mach 2.7 flow over a swept wedge scramjet fuel injector, and three-dimensional reacting flow capability is demonstrated by a computing a shock-jet interaction concept for mixing and combustion enhancement. 34 refs.

White, J.A.; Korte, J.J.; Gaffney, R.L. Jr. (Analytical Services and Materials, Inc., Hampton, VA (United States) NASA, Langley Research Center, Hampton, VA (United States))

1993-01-01T23:59:59.000Z

194

A three-dimensional upwind PNS code for chemically reacting scramjet flowfields. [Parabolized Navier Stokes  

SciTech Connect

A new upwind, parabolized Navier-Stokes (PNS) code has been developed to compute the three-dimensional (3D) chemically reacting flow in scramjet (supersonic combustion ramjet) engines. The code is a modification of the 3D upwind PNS (UPS) airflow code which has been extended in the present study to permit internal flow calculations with hydrogen-air chemistry. With these additions, the new code has the capability of computing aerodynamic and propulsive flowfields simultaneously. The algorithm solves the PNS equations using a finite-volume, upwind TVD method based on Roe's approximate Riemann solver that has been modified to account for 'real gas' effects. The fluid medium is assumed to be a chemically reacting mixture of thermally perfect (but calorically imperfect) gases in thermal equilibrium. The new code has been applied to two test cases. These include the Burrows-Kurkov supersonic combustion experiment and a generic 3D scramjet flowfield. The computed results compare favorably with the available experimental data. 38 refs.

Wadawadigi, G.; Tannehill, J.C.; Buelow, P.E.; Lawrence, S.L. (Iowa State University of Science and Technology, Ames (United States) NASA, Ames Research Center, Moffett Field, CA (United States))

1992-07-01T23:59:59.000Z

195

Long range propagation modeling of offshore wind turbine noise using finite element and parabolic equation models  

Science Journals Connector (OSTI)

Noise generated by offshore wind turbines and support structures radiates and propagates through the air water and sediment. Predicting noise levels around wind turbine structures at sea is required to estimate the effects of the noise on marine life. We used Finite Element(FE) and Parabolic Equation (PE) models to predict long range propagation of noise from the construction and operation of offshore wind turbines.FEanalysis produced pressure outputs at short ranges were used as a starting field for a modified PE propagation model. Furthermore we investigated the optimum range for the transition to PE modeling. The effects of various sediment types were also considered determining the pressure starting field. In FEanalysis models we implemented the axisymmetric elements and implicit dynamic analysis with pressureimpact loading and vertical acceleration boundary conditions to simulate pile driving and operational noise radiation. We will present the PE long range pressure field outputs from the offshore pile driving and operation for a shallow water environment around Block Island Rhode Island.

Huikwan Kim; Gopu R. Potty; James H. Miller; Kevin B. Smith; Georges Dossot

2012-01-01T23:59:59.000Z

196

Climate Change Update: Baseload Geothermal is One of the Lowest...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

of electricity, geothermal energy has a broad range of other applications including district heating, industrial processes, and direct space heating. Not only are these...

197

Brayton-Cycle Baseload Power Tower CSP System  

SciTech Connect

The primary objectives of Phase 2 of this Project were: 1. Engineer, fabricate, and conduct preliminary testing on a low-pressure, air-heating solar receiver capable of powering a microturbine system to produce 300kWe while the sun is shining while simultaneously storing enough energy thermally to power the system for up to 13 hours thereafter. 2. Cycle-test a high-temperature super alloy, Haynes HR214, to determine its efficacy for the system’s high-temperature heat exchanger. 3. Engineer the thermal energy storage system This Phase 2 followed Wilson’s Phase 1, which primarily was an engineering feasibility study to determine a practical and innovative approach to a full Brayton-cycle system configuration that could meet DOE’s targets. Below is a summary table of the DOE targets with Wilson’s Phase 1 Project results. The results showed that a Brayton system with an innovative (low pressure) solar receiver with ~13 hours of dry (i.e., not phase change materials or molten salts but rather firebrick, stone, or ceramics) has the potential to meet or exceed DOE targets. Such systems would consist of pre-engineered, standardized, factory-produced modules to minimize on-site costs while driving down costs through mass production. System sizes most carefully analyzed were in the range of 300 kWe to 2 MWe. Such systems would also use off-the-shelf towers, blowers, piping, microturbine packages, and heliostats. Per DOE’s instructions, LCOEs are based on the elevation and DNI levels of Daggett, CA, for a 100 MWe power plant following 2 GWe of factory production of the various system components. Success criteria DOE targets Wilson system LCOE DOE’s gas price $6.75/MBtu 9 cents/kWh 7.7 cents/kWh LCOE Current gas price $4.71/MBtu NA 6.9 cents/kWh Capacity factor 75% (6500hr) 75-100% Solar fraction 85% (5585hr) >5585hr Receiver cost $170/kWe $50/kWe Thermal storage cost $20/kWhth $13/kWhth Heliostat cost $120/m2 $89.8/m2

Anderson, Bruce

2013-12-31T23:59:59.000Z

198

Project Profile: Modular and Scalable Baseload Molten Salt Plant...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

salt receiver A distributed molten salt transport system Hybridization with natural gas or biofuels. Publications, Patents, and Awards J. E. Pacheco, C. Moursund, D. Rogers;...

199

Microtopographic characterization of ice-wedge polygon landscape in Barrow, Alaska: a digital map of troughs, rims, centers derived from high resolution (0.25 m) LiDAR data  

DOE Data Explorer (OSTI)

The dataset represents microtopographic characterization of the ice-wedge polygon landscape in Barrow, Alaska. Three microtopographic features are delineated using 0.25 m high resolution digital elevation dataset derived from LiDAR. The troughs, rims, and centers are the three categories in this classification scheme. The polygon troughs are the surface expression of the ice-wedges that are in lower elevations than the interior polygon. The elevated shoulders of the polygon interior immediately adjacent to the polygon troughs are the polygon rims for the low center polygons. In case of high center polygons, these features are the topographic highs. In this classification scheme, both topographic highs and rims are considered as polygon rims. The next version of the dataset will include more refined classification scheme including separate classes for rims ad topographic highs. The interior part of the polygon just adjacent to the polygon rims are the polygon centers.

Gangodagamage, Chandana; Wullschleger, Stan

200

Microtopographic characterization of ice-wedge polygon landscape in Barrow, Alaska: a digital map of troughs, rims, centers derived from high resolution (0.25 m) LiDAR data  

SciTech Connect

The dataset represents microtopographic characterization of the ice-wedge polygon landscape in Barrow, Alaska. Three microtopographic features are delineated using 0.25 m high resolution digital elevation dataset derived from LiDAR. The troughs, rims, and centers are the three categories in this classification scheme. The polygon troughs are the surface expression of the ice-wedges that are in lower elevations than the interior polygon. The elevated shoulders of the polygon interior immediately adjacent to the polygon troughs are the polygon rims for the low center polygons. In case of high center polygons, these features are the topographic highs. In this classification scheme, both topographic highs and rims are considered as polygon rims. The next version of the dataset will include more refined classification scheme including separate classes for rims ad topographic highs. The interior part of the polygon just adjacent to the polygon rims are the polygon centers.

Gangodagamage, Chandana; Wullschleger, Stan

2014-07-03T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

488 Brazilian Journal of Physics, vol. 36, no. 2A, June, 2006 Spin Valve Effect and Hall Resistance in a Wide Parabolic Well  

E-Print Network (OSTI)

488 Brazilian Journal of Physics, vol. 36, no. 2A, June, 2006 Spin Valve Effect and Hall Resistance: Spin valve; Hall resistance; AlcGa1-cAs parabolic wells I. INTRODUCTION The Hall effect is very known by the formula Rxy = R0B+RSM, where B is ap- plied magnetic field, R0 is the ordinary Hall coefficient, and RS

Gusev, Guennady

202

Efficient directional spontaneous emission from an InGaAs/InP heterostructure with an integral parabolic reflector  

SciTech Connect

In order to increase the radiative efficiency and directivity of spontaneous emission from a lattice-matched InGaAs/InP heterostructure, we have polished the substrate into a parabolic reflector. We combine optical and thermal measurements to obtain the absolute external efficiency over a wide range of carrier densities. Using a simple model, the measurement is used to determine interface, radiative, and Auger recombination rates in the active material. At the optimal density, the quantum efficiency exceeds 60{percent} at room temperature. The divergence of the emitted light is less than 20{degree}. In fact, the beam profile is dominated by a 6{degree} wide lobe that can be swept across the field of emission by changing the excitation position. This suggests a way to create an all-electronic scanned light beam. {copyright} {ital 1998 American Institute of Physics.}

Gfroerer, T.H.; Cornell, E.A. [JILA, National Institute of Standards and Technology and University of Colorado, and Department of Physics, University of Colorado, Boulder, Colorado, 80309-0440 (United States)] [JILA, National Institute of Standards and Technology and University of Colorado, and Department of Physics, University of Colorado, Boulder, Colorado, 80309-0440 (United States); Wanlass, M.W. [National Renewable Energy Laboratory, Golden, Colorado, 80401 (United States)] [National Renewable Energy Laboratory, Golden, Colorado, 80401 (United States)

1998-11-01T23:59:59.000Z

203

Electromagnetic modeling of the energy distribution of a metallic cylindrical parabolic reflector covered with a magnetized plasma layer  

SciTech Connect

The energy distribution along the focal axis of a long metallic cylindrical parabolic reflector with a plasma layer on its surface in the presence of an external magnetic field is investigated. The effects of some physical parameters, such as the plasma frequency, the wave frequency and the thickness of plasma layer on the energy distribution and the reflected and transmitted electromagnetic fields, are simulated. These investigations for both S- and P-polarizations have been done separately. It is found that the maximum value of the reflected intensity increases by increasing the incident wave frequency and by decreasing the plasma layer thickness and the plasma frequency for both polarizations. Furthermore, the results show that the increase of the magnetic field strength can cause an increase in the reflected intensity for S-polarization and a slight decrease for P-polarization.

Niknam, A. R., E-mail: a-niknam@sbu.ac.ir; Khajehmirzaei, M. R. [Laser and Plasma Research Institute, Shahid Beheshti University, GC, Tehran (Iran, Islamic Republic of); Davoudi-Rahaghi, B.; Rahmani, Z.; Jazi, B.; Abdoli-Arani, A. [Department of Laser and Photonics, Faculty of Physics, University of Kashan, Kashan (Iran, Islamic Republic of)

2014-07-15T23:59:59.000Z

204

A helium film coated quasi-parabolic mirror to focus a beam of ultra-cold spin polarized atomic hydrogen  

SciTech Connect

A 350 mK helium-4-coated mirror was used to increase the intensity of an ultra-cold electron-spin-polarized atomic hydrogen beam. The mirror uses the observed specular reflection of atomic hydrogen from a superfluid-helium-covered surface. A quasi-parabolic polished copper mirror was installed with its focus at the 5 mm diameter exit aperture of an atomic hydrogen stabilization cell in the gradient of an 8 T solenoid field. The four-coned mirror shape, which was designed specifically for operation in the gradient, increased the beam intensity focused by a sextupole magnet into a compression tube detector by a factor of about 7.5.

Luppov, V.G.; Kaufman, W.A.; Hill, K.M.; Raymond, R.S.; Kirsch, A.D. (Randall Laboratory, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States))

1993-12-05T23:59:59.000Z

205

A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System  

E-Print Network (OSTI)

edge of ‘disruptive’ solar technology that could replace thewe develop a new solar technology and a suite of analysisin parabolic trough solar power technology. Journal of Solar

Norwood, Zachary Mills

2011-01-01T23:59:59.000Z

206

Federal Correctional Institution - Phoenix, Arizona | Department...  

Energy Savers (EERE)

Federal Correctional Institution - Phoenix, Arizona Photo of a Parabolic-Trough Solar Water-Heating System Installed at the Federal Correctional Institution Facility north of...

207

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

on Sustainable thermal Energy Storage Technologies, Part I:2009, “Review on Thermal Energy Storage with Phase Change2002, “Survey of Thermal Energy Storage for Parabolic Trough

Coso, Dusan

2013-01-01T23:59:59.000Z

208

Changes in the Economic Value of Variable Generation at High Penetration Levels: A Pilot Case Study of California  

E-Print Network (OSTI)

how the optimal thermal storage and solar field multipliermolten salt storage for parabolic trough solar power plants.of concentrating solar power and thermal energy storage.

Mills, Andrew D.

2014-01-01T23:59:59.000Z

209

President Obama Announces $1.45 Billion Conditional Commitment...  

Office of Environmental Management (EM)

power generating facility. The Solana, Arizona plant will add 250 megawatts (MW) of capacity to the electrical grid using parabolic trough solar collectors and an innovative...

210

Bethel Energy LLC | Open Energy Information  

Open Energy Info (EERE)

Name: Bethel Energy LLC Place: Cardiff, California Zip: 92007 Sector: Solar Product: Solar thermal electricity generation (STEG) project developer, to use parabolic trough...

211

STA'IfEMENT OF CONSIDERATIONS REQUEST BY ABENGOA SOLAR INC. ...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

under the above referenced cooperative agreement entitled , Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power Plants." According to ASI's...

212

Concentrating Solar Power (Fact Sheet), Electricity, Resources...  

NLE Websites -- All DOE Office Websites (Extended Search)

of parabolic trough modules. * At the Receiver Test Laboratory, we can measure heat loss as a function of temperature to establish the thermal per- formance of receiver...

213

High-Performance Nanostructured Coating  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

of the major operating and maintenance issues for parabolic trough plants are minimizing heat loss and the eventual replacement of coatings and receivers. The issues are expected...

214

Sandia National Laboratories: Facilities  

NLE Websites -- All DOE Office Websites (Extended Search)

large fields of optics for astronomical observations or satellite calibrations; a solar furnace; and a rotating platform for parabolic trough evaluation. The NSTTF is...

215

The Whitehorse Trough is an early Mesozoic marine sedimentary basin, which extends from southern Yukon to Dease Lake in British Columbia. This paper outlines the stratigraphy and structure, and characterises the overall petroleum  

E-Print Network (OSTI)

and structure, and characterises the overall petroleum resource potential of the central Whitehorse Trough component of the stratigraphy. Potential petroleum traps are provided by antiforms, thrust faults stratigraphique de Inklin. Le thème du gaz BULLETIN OF CANADIAN PETROLEUM GEOLOGY VOL. 53, NO. 2 (JUNE, 2005), P

Johnston, Stephen T.

216

A 2D finite element with through the thickness parabolic temperature distribution for heat transfer simulations including welding  

Science Journals Connector (OSTI)

Abstract The arc welding process involves thermal cycles that cause the appearance of undesirable residual stresses. The determination of this thermal cycle is the first step to a thermomechanical analysis that allows the numerical calculation of residual stresses. This study describes the formulation of a 2D finite element with through the thickness parabolic temperature distribution, including an element estabilization procedure. The 2D element described in this paper can be used to perform thermal analysis more economically than 3D elements, especially in plates, because the number of degrees of freedom through the thickness will always be three. A numerical model of a tungsten arc welding (GTAW) setup was made based on published experimental results. Size and distribution of the heat source input, thermal properties dependent on temperature, surface heat losses by convection and latent heat during phase change were considered. In parallel the same setup was modeled using ANSYS software with 3D elements (SOLID70) to compare against 2D numerical results. The results obtained by 2D model, 3D model and experimental data showed good agreement.

Darlesson Alves do Carmo; Alfredo Rocha de Faria

2015-01-01T23:59:59.000Z

217

Improving angular acceptance of stationary low-concentration photovoltaic compound parabolic concentrators using acrylic lens-walled structure  

Science Journals Connector (OSTI)

Low-concentration photovoltaic compound parabolic concentrators (PV-CPC) are a significant addition of solar cell application especially in Building Integrated Photovoltaics because it does not need a tracking system and can be installed in a stationary condition. However higher concentrations correspond with the smaller half acceptance angle which is a limitation but can be improved by a lens-walled structure. In this paper to validate the rationale of this structure a low-concentration PV-CPC using an acrylic lens-walled structure module was designed and fabricated with low-cost materials. The corresponding simulation was also performed with different materials to determine whether the factor that the truncation had a significant effect. The observed outcome implied that the low-concentration PV-CPC using an acrylic lens-walled structure has a larger half acceptance angle than the mirror CPC and that a maximum optical efficiency of more than 80% can be achieved using Schott BK glass as the lens wall material. The lens-walled structure improved the angular acceptance of stationary low-concentration PV-CPC providing a basis for further research.

2014-01-01T23:59:59.000Z

218

NEW METHOD AND SOFTWARE FOR MULTI-VARIABLE TECHNO-ECONOMIC DESIGN OPTIMIZATION OF CSP PLANTS  

E-Print Network (OSTI)

for design optimization of solar thermal power plants. Thereby, optimization potential can be discovered to a 50 MWel parabolic trough power plant using thermal oil as heat transfer fluid (HTF), a molten salt, parabolic trough 1. Motivation (Introduction) Today, designs of solar thermal power plants are developed

Ábrahám, Erika

219

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

11 - 520 of 8,172 results. 11 - 520 of 8,172 results. Download CX-004078: Categorical Exclusion Determination The Joint Center for Artificial Photosynthesis CX(s) Applied: A7, B1.4, B1.5, B1.7, B1.15, B1.24, B2.1, B2.2, B3.6 Date: 09/21/2010 Location(s): Chicago, Illinois Office(s): Science, Chicago Office http://energy.gov/nepa/downloads/cx-004078-categorical-exclusion-determination Download CX-003976: Categorical Exclusion Determination Development of a High-Concentration Low-Cost Parabolic Trough System for Baseload Concentrated Solar Power Generation CX(s) Applied: A9, B5.1 Date: 09/20/2010 Location(s): Arvada, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-003976-categorical-exclusion-determination Download CX-003978: Categorical Exclusion Determination

220

A helium-film-coated quasi-parabolic mirror to focus a beam of ultra-cold spin-polarized atomic hydrogen  

SciTech Connect

A 350 mK helium-4 coated mirror was used to increase the intensity of an ultra-cold electron-spin-polarized atomic hydrogen beam. The mirror uses the observed specular reflection of atomic hydrogen from a superfluid-helium-covered surface. A quasi-parabolic polished copper mirror was installed with its focus at the 5 mm diameter exit aperture of an atomic hydrogen stabilization cell in the gradient of an 8 T solenoid. The four-coned mirror shape, which was designed specifically for operation in the gradient, increased the beam intensity focused by a sextupole magnet into a compression tube detector more than seven-fold.

Luppov, V.G.; Kaufman, W.A.; Hill, K.M. [and others

1993-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Parabolic Signorini Problem  

E-Print Network (OSTI)

Page 59 ... Teorem (Monotonicity of truncated frequency). Let v ? Sf . en for any ? > there exists C = C(fL? , ?) > such that r. ?(r,v) = re. Cr? d dr log max?Br v , r.

Arshak Petrosyan

2011-11-16T23:59:59.000Z

222

Numerical study of hydrogen-air supersonic combustion by using elliptic and parabolized equations. Progress report, 1 December 1985-31 May 1986  

SciTech Connect

The two-dimensional Navier-Stokes and species continuity equations are used to investigate supersonic chemically reacting flow problems which are related to scramjet-engine configurations. A global two-step finite-rate chemistry model is employed to represent the hydrogen-air combustion in the flow. An algebraic turbulent model is adopted for turbulent flow calculations. The explicit unsplit MacCormack finite-difference algorithm is used to develop a computer program suitable for a vector processing computer. The computer program developed is then used to integrate the system of the governing equations in time until convergence is attained. The chemistry source terms in the species continuity equations are evaluated implicitly to alleviate stiffness associated with fast chemical reactions. The problems solved by the elliptic code are re-investigated by using a set of two-dimensional parabolized Navier-Stokes and species equations. A linearized fully-coupled fully-implicit finite difference algorithm is used to develop a second computer code which solves the governing equations by marching in spce rather than time, resulting in a considerable saving in computer resources. Results obtained by using the parabolized formulation are compared with the results obtained by using the fully-elliptic equations. The comparisons indicate fairly good agreement of the results of the two formulations.

Chitsomboon, T.; Tiwari, S.N.

1986-08-01T23:59:59.000Z

223

Gamma Bang Time/Reaction History Diagnostics for the National Ignition Facility (NIF) Using 90-degree Off-axis Parabolic Mirrors  

SciTech Connect

Gas Cherenkov detectors (GCD) have been used to convert fusion gamma into photons to achieve gamma bang time (GBT) and reaction history measurements. The GCD designed for Omega used Cassegrain reflector optics in order to fit inside a ten-inch manipulator. A novel design for the National Ignition Facility (NIF) using 90º Off-Axis Parabolic (OAP) mirrors will increase light collection efficiency from fusion gammas and achieve minimum time dispersion. The broadband Cherenkov light (from 200 to 800 nm) is relayed into a high-speed detector using three parabolic mirrors. Because light is collected from many source planes throughout the CO2 gas volume, the detector is positioned at the stop position rather than an image position. The stop diameter and its position are independent of the light-generation location along the gas cell. The current design collects light from a 100-mm diameter by 500-mm-long gas volume. Optical ray tracings demonstrate how light can be collected from different angled trajectories of the Compton electrons as they fly through the CO2 gas volume. A cluster of four channels will allow for increased dynamic range as well as different gamma energy threshold sensitivities. 52.70.La, 29.40.Ka, 42.15.Eq, 07.60.-j, 07.85.-m

H.W. Herrmann, R.M. Malone, W. Stoeffl, J.M. Mack, C.S. Young

2008-06-01T23:59:59.000Z

224

Sandia National Laboratories: Trough Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Doppler Velocimeter EC Top Publications A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study Nonlinear Time-Domain...

225

The CAESAR project: Experimental and modeling investigations of methane reforming in a CAtalytically Enhanced Solar Absorption Receiver on a parabolic dish  

SciTech Connect

A joint US/Federal Republic of Germany (FRG) project has successfully tested a unique solar-driven chemical reactor in the CAtalytically Enhanced Solar Absorption Receiver (CAESAR) experiment. The CAESAR test was a {open_quotes}proof-of-concept{close_quotes} demonstration of carbon-dioxide reforming of methane in a commercial-scale, solar, volumetric receiver/reactor on a parabolic dish concentrator. The CAESAR design; test facility and instrumentation; thermal and chemical tests; and analysis of test results are presented in detail. Numerical models for the absorber and the receiver are developed and predicted performance is compared with test data. Post test analyses to assess the structural condition of the absorber and the effectiveness of the rhodium catalyst are presented. Unresolved technical issues are identified and future development efforts are recommended.

Muir, J.F.; Hogan, R.E. Jr.; Skocypec, R.D. [Sandia National Labs., Albuquerque, NM (US); Buck, R. [Deutsche Forschungsanstalt fuer Luft- und Raumfahrt, Stuttgart (DE). Inst. of Technical Thermodynamics

1993-07-01T23:59:59.000Z

226

A review of test results on parabolic dish solar thermal power modules with dish-mounted rankine engines and for production of process steam  

SciTech Connect

This paper presents results of development testing of various solar thermal parabolic dish modules and assemblies. Most of the tests were at modules and assemblies that used a dish-mounted, organic Rankine cycle turbine for production of electric power. Some tests were also run on equipment for production of process steam or for production of electricity using dish-mounted reciprocating steam engines. These tests indicate that early modules achieve efficiencies of about 18 percent in converting sunlight to electricity (excluding the inverter but including parasitics). A number of malfunctions occurred. The performance measurements, as well as the malfunctions and other operating experience, provided information that should be of value in developing systems with improved performance and reduced maintenance.

Jaffe, L.D.

1988-11-01T23:59:59.000Z

227

Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage  

NLE Websites -- All DOE Office Websites (Extended Search)

November 13, 2012 | Wong November 13, 2012 | Wong * Conduct laboratory studies on reaction thermodynamics and kinetics of the sulfur generating disproportionation reaction. Effect of various potential catalysts and means to separate the reaction products will be investigated. A kinetic equation for process design will be defined. * Improve the solar reactor design and catalyst performance to increase SO 3 to SO 2 conversion fraction * Preliminary process component design and experimental validation for the three process steps. Carry out process integration design between the CSP plant, the sulfur processing and storage plant and the electricity generation unit. * Design and flowsheet studies to assess the system economics, its environmental impact and pathways to ascertain safe operations of

228

Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage  

NLE Websites -- All DOE Office Websites (Extended Search)

May 15, 2013 | Wong May 15, 2013 | Wong * Conduct laboratory studies on reaction thermodynamics and kinetics of the sulfur generating disproportionation reaction. Effect of various potential catalysts and means to separate the reaction products will be investigated. A kinetic equation for process design will be defined. * Improve the solar reactor design and catalyst performance to increase SO 3 to SO 2 conversion fraction * Preliminary process component design and experimental validation for the three process steps. Carry out process integration design between the CSP plant, the sulfur processing and storage plant and the electricity generation unit. * Design and flowsheet studies to assess the system economics, its environmental impact and pathways to ascertain safe operations of

229

Climate Change Update: Baseload Geothermal is One of the Lowest Emitting Energy Technologies  

Energy.gov (U.S. Department of Energy (DOE))

Geothermal energy – energy derived from the heat of the earth – has the ability to produce electricity consistently around the clock, draws a small environmental footprint, and emits little or no greenhouse gases (GHG).

230

Using Encapsulated Phase Change Material for Thermal Energy Storage for Baseload CSP  

Energy.gov (U.S. Department of Energy (DOE))

This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 23–25, 2013 near Phoenix, Arizona.

231

A DOE-Funded Design Study for Pioneer Baseload Application Of...  

Open Energy Info (EERE)

testing effort to determine the feasibility of applying anadvanced high-efficiency binary heat recovery cycle - the KalinaCycleTM - to recover energy from 171' C silica-rich...

232

Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage- FY13 Q1  

Energy.gov (U.S. Department of Energy (DOE))

This document summarizes the progress of this General Atomics project, funded by SunShot, for the first quarter of fiscal year 2013.

233

Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage- FY12 Q4  

Energy.gov (U.S. Department of Energy (DOE))

This document summarizes the progress of this General Atomics project, funded by SunShot, for the fourth quarter of fiscal year 2012.

234

Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage- FY13 Q2  

Energy.gov (U.S. Department of Energy (DOE))

This document summarizes the progress of this General Atomics project, funded by SunShot, for the second quarter of fiscal year 2013.

235

Life cycle assessment of base-load heat sources for district heating system options  

SciTech Connect

Purpose There has been an increased interest in utilizing renewable energy sources in district heating systems. District heating systems are centralized systems that provide heat for residential and commercial buildings in a community. While various renewable and conventional energy sources can be used in such systems, many stakeholders are interested in choosing the feasible option with the least environmental impacts. This paper evaluates and compares environmental burdens of alternative energy source options for the base load of a district heating center in Vancouver, British Columbia (BC) using the life cycle assessment method. The considered energy sources include natural gas, wood pellet, sewer heat, and ground heat. Methods The life cycle stages considered in the LCA model cover all stages from fuel production, fuel transmission/transportation, construction, operation, and finally demolition of the district heating system. The impact categories were analyzed based on the IMPACT 2002+ method. Results and discussion On a life-cycle basis, the global warming effect of renewable energy options were at least 200 kgeqCO2 less than that of the natural gas option per MWh of heat produced by the base load system. It was concluded that less than 25% of the upstream global warming impact associated with the wood pellet energy source option was due to transportation activities and about 50% of that was resulted from wood pellet production processes. In comparison with other energy options, the wood pellets option has higher impacts on respiratory of inorganics, terrestrial ecotoxicity, acidification, and nutrification categories. Among renewable options, the global warming impact of heat pump options in the studied case in Vancouver, BC, were lower than the wood pellet option due to BC's low carbon electricity generation profile. Ozone layer depletion and mineral extraction were the highest for the heat pump options due to extensive construction required for these options. Conclusions Natural gas utilization as the primary heat source for district heat production implies environmental complications beyond just the global warming impacts. Diffusing renewable energy sources for generating the base load district heat would reduce human toxicity, ecosystem quality degradation, global warming, and resource depletion compared to the case of natural gas. Reducing fossil fuel dependency in various stages of wood pellet production can remarkably reduce the upstream global warming impact of using wood pellets for district heat generation.

Ghafghazi, Saeed [University of British Columbia, Vancouver; Sowlati, T. [University of British Columbia, Vancouver; Sokhansanj, Shahabaddine [ORNL; Melin, Staffan [Delta Research Corporation

2011-03-01T23:59:59.000Z

236

Concentrating Solar Power Commercial Application Study  

E-Print Network (OSTI)

Towers....................................................................... 9 Dish/Engine Systems, and dish/engine. Parabolic troughs are the most commercially available technology. Linear Fresnel and power Rankine steam cycles, similar to those used for coal and nuclear plants. Steam cycle power plants require

Laughlin, Robert B.

237

Power Generation  

Science Journals Connector (OSTI)

Solar energy from a parabolic trough integrated in...16.25 shows the layout of this integrated solar combined cycle system. The heat from the ... in addition to the heat supplied from the gas turbine

Dwarkadas Kothari Prof.…

2009-01-01T23:59:59.000Z

238

Thermal Storage Commercial Plant Design Study for a 2-Tank Indirect Molten Salt System: Final Report, 13 May 2002 - 31 December 2004  

SciTech Connect

Subcontract report by Nexant, Inc., and Kearney and Associates regarding a study of a solar parabolic trough commercial plant design with 2-tank indirect molten salt thermal storage system.

Kelly, B.; Kearney, D.

2006-07-01T23:59:59.000Z

239

Sandia National Laboratories: CSP & NSTTF FAQs  

NLE Websites -- All DOE Office Websites (Extended Search)

& NSTTF FAQs CSP & NSTTF FAQs CSP FAQs How do CSP plants produce electricity from the sun? CSP plants (dish engine, power towers, and parabolic trough systems) all operate the...

240

Enerstar SA | Open Energy Information  

Open Energy Info (EERE)

Valencia, Spain Zip: 467022 Sector: Solar Product: Developing a 50.0MW parabolic trough solar thermal project in Villena. References: Enerstar SA1 This article is a stub. You...

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Alternative Energy Development and China's Energy Future  

E-Print Network (OSTI)

exploring small-scale solar tower demonstration project andfilm PV cells, and CSP solar tower. Figure 3. Map of China'sCSP technologies such as solar towers and parabolic troughs.

Zheng, Nina

2012-01-01T23:59:59.000Z

242

CX-009024: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Exclusion Determination CX-009024: Categorical Exclusion Determination "Advanced Low Cost Receivers for Solar Parabolic Trough CX(s) Applied: B3.6, B5.17 Date: 08092012...

243

CX-005781: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Exclusion Determination CX-005781: Categorical Exclusion Determination Reducing the Cost of Thermal Energy Storage for Parabolic Trough Power Plants CX(s) Applied: A9, B3.6...

244

Approach to designing a solar concentrator for small-scale remote power application  

Science Journals Connector (OSTI)

A small-scale concentrated solar power (CSP) unit was designed to provide electricity and hot water using an organic Rankine cycle (ORC) for Egypt as part of an undergraduate capstone project. The system was designed for a target power output of 3 kW. It uses parabolic troughs to heat ethylene glycol used as the heat transfer fluid which absorbs heat in the trough collector and transfers it to the working fluid through a heat exchanger. The system consists of 9 parabolic troughs and a total aperture area of 67 m2 providing the required 3 kW of energy to the ORC. One parabolic trough was manufactured to test its thermal efficiency according to ASHRAE standard 93-2003 [Methods of Testing to Determine the Thermal Performance of Solar Collectors (ASHRAE Inc. 1791 Tullie Circle NE Atlanta GA 30329 2003)] and compared it to its calculated value. A simple microcontroller-based system was used to track the sun.

Khaled Metwally; Ahmed Makhlouf; Lamyaa El-Gabry

2011-01-01T23:59:59.000Z

245

System study of an MHD/gas turbine combined-cycle baseload power plant. HTGL report No. 134  

SciTech Connect

The MHD/gas turbine combined-cycle system has been designed specifically for applications where the availability of cooling water is very limited. The base case systems which were studied consisted of an MHD plant with a gas turbine bottoming plant, and required no cooling water. The gas turbine plant uses only air as its working fluid and receives its energy input from the MHD exhaust gases by means of metal tube heat exchangers. In addition to the base case systems, vapor cycle variation systems were considered which included the addition of a vapor cycle bottoming plant to improve the thermal efficiency. These systems required a small amount of cooling water. The MHD/gas turbine systems were modeled with sufficient detail, using realistic component specifications and costs, so that the thermal and economic performance of the system could be accurately determined. Three cases of MHD/gas turbine systems were studied, with Case I being similar to an MHD/steam system so that a direct comparison of the performances could be made, with Case II being representative of a second generation MHD system, and with Case III considering oxygen enrichment for early commercial applications. The systems are nominally 800 MW/sub e/ to 1000 MW/sub e/ in size. The results show that the MHD/gas turbine system has very good thermal and economic performances while requiring either little or no cooling water. Compared to the MHD/steam system which has a cooling tower heat load of 720 MW, the Base Case I MHD/gas turbine system has a heat rate which is 13% higher and a cost of electricity which is only 7% higher while requiring no cooling water. Case II results show that an improved performance can be expected from second generation MHD/gas turbine systems. Case III results show that an oxygen enriched MHD/gas turbine system may be attractive for early commercial applications in dry regions of the country.

Annen, K.D.

1981-08-01T23:59:59.000Z

246

Research and Development of a Low Cost Solar Collector  

SciTech Connect

This is a Final Technical Report on the Research and Development completed towards the development of a Low Cost Solar Collector conducted under the DOE cost-sharing award EE-0003591. The objective of this project was to develop a new class of solar concentrators with geometries and manufacturability that could significantly reduce the fully installed cost of the solar collector field for concentrated solar thermal power plants. The goal of the project was to achieve an aggressive cost target of $170/m2, a reduction of up to 50% in the total installed cost of a solar collector field as measured against the current industry benchmark of a conventional parabolic trough. The project plan, and the detailed activities conducted under the scope of the DOE Award project addressed all major drivers that affect solar collector costs. In addition to costs, the study also focused on evaluating technical performance of new collector architectures and compared them to the performance of the industry benchmark parabolic trough. The most notable accomplishment of this DOE award was the delivery of a full-scale integrated design, manufacturing and field installation solution for a new class of solar collector architecture which has been classified as the Bi-Planar Fresnel Collector (BPFC) and may be considered as a viable alternative to the conventional parabolic trough, as well as the conventional Fresnel collectors. This was in part accomplished through the design and development, all the way through fabrication and test validation of a new class of Linear Planar Fresnel Collector architecture. This architecture offers a number of key differentiating features which include a planar light-weight frame geometry with small mass-manufacturable elements utilizing flat mirror sections. The designs shows significant promise in reducing the material costs, fabrication costs, shipping costs, and on-site field installation costs compared to the benchmark parabolic trough, as well as the conventional Fresnel collector. The noteworthy design features of the BPFC architecture include the use of relatively cheaper flat mirrors and a design which allows the mirror support beam sections to act as load-bearing structural elements resulting in more than a 36% reduction in the overall structural weight compared to an optimized parabolic trough. Also, it was shown that the utilization of small mass-produced elements significantly lowers mass-production and logistics costs that can more quickly deliver economies of scale, even for smaller installations while also reducing shipping and installation costs. Moreover, unlike the traditional Fresnel trough the BPFC architecture does not require complex articulating drive mechanisms but instead utilizes a standard parabolic trough hydraulic drive mechanism. In addition to the development of the Bi-Planar Fresnel Collector, an optimized conventional space-frame type parabolic trough was also designed, built, analyzed and field-tested during the first phase of this award. The design of the conventional space-frame parabolic collector was refined with extensive FEA and CFD analysis to reduce material costs and re-designed for simpler fabrication and more accurate lower-cost field assembly. This optimized parabolic trough represented an improvement over the state-of-the art of the traditional parabolic trough architecture and also served as a more rigorous and less subjective benchmark that was used for comparison of new candidate design architectures. The results of the expanded 1st phase of the DOE award project showed that both the Optimized Parabolic Trough and the new Bi-Planar Fresnel Collector design concepts failed to meet the primary objectives for the project of achieving a 50% cost reduction from the industry reference total installed cost of $350/m2. Results showed that the BPFC came in at projected total installed cost of $237/m2 representing a 32% savings compared to the industry benchmark conventional parabolic trough. And the cost reduction obtained by the Optimized Parabolic Trough compared to the

Ansari, Asif; Philip, Lee; Thouppuarachchi, Chirath

2012-08-01T23:59:59.000Z

247

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

ECONOMIC ISSUES Baseload Electricity Baseload electricity production in the Gulf Coast States relies primarily on oil, natural gas, and coal.

Sands, M. D.

2011-01-01T23:59:59.000Z

248

A PARABOLIC ALMOST MONOTONICITY FORMULA Introduction In ...  

E-Print Network (OSTI)

is monotone increasing in r, 0 1, provided u± have moderate growth at infinity. ... 1 = B1 × (?1, 0] is to multiply them with a cutoff function ?(x) thus extending ...... Pure Appl. Math. 42 (1989), no. 1, 55–78. MR. 973745 (90b:35246

2006-07-07T23:59:59.000Z

249

Parabolic Systems With Nonlinear Competitive Interactions  

Science Journals Connector (OSTI)

......2), (A.9) UQ.VO^O on Q. (A.10) There exist positive constants C2 and C3 such that F1(x,t,u,0)^-(C2u + C3) foru^O, (A. 11) F^x, t, 0, v) 2* -{C2v + C3) forv 0. (A.12) Then there exists a classical solution......

C. COSNER; S. LENHART; V. PROTOPOPESCU

1990-01-01T23:59:59.000Z

250

Federal Correctional Institution- Phoenix, Arizona  

Energy.gov (U.S. Department of Energy (DOE))

A parabolic-trough solar water-heating system was installed at the Federal Correctional Institution (FCI) facility north of Phoenix, Arizona. This medium security prison for males has a current population of about 1,200 inmates and uses an average of 50,000 gallons of hot water per day for kitchen, shower, laundry, and sanitation needs.

251

Project Profile: Improved Large Aperture Collector Manufacturing  

Energy.gov (U.S. Department of Energy (DOE))

Abengoa Solar, under the Solar Manufacturing Technology (SolarMat) program, will be investigating the use of an automotive-style high-rate fabrication and automated assembly techniques to achieve a substantial reduction in the deployment cost of their new SpaceTube advanced large aperture parabolic trough collector.

252

ES2008-54174 This manuscript has been authored by Sandia Corporation under Contact No. DE-AC04-94AL85000 with the U.S. Dept. of Energy.  

E-Print Network (OSTI)

FOR THERMAL ENERGY STORAGE IN PARABOLIC TROUGH SOLAR POWER SYSTEMS Robert W. Bradshaw and Nathan P. Siegel Box 5800 Albuquerque, New Mexico 87185, USA ABSTRACT Thermal energy storage can enhance the utility85000 with the U.S. Dept. of Energy. The United States Government retains and the publisher

Laughlin, Robert B.

253

Project Profile: Scattering Solar Thermal Concentrators  

Energy.gov (U.S. Department of Energy (DOE))

Pennsylvania State University, under the 2012 SunShot Concentrating Solar Power (CSP) R&D FOA, is designing and testing a novel solar collector system that relies on stationary optics, avoiding the need for mirror movement. The system is capable of achieving optical performance equal to state-of-the-art parabolic trough systems, but at a lower cost.

254

CHINA'S DUST AFFECTS SOLAR RESOURCE IN THE U.S.: A CASE STUDY Christian A. Gueymard Nels S. Laulainen  

E-Print Network (OSTI)

a significant im- pact. Concentrating systems such as parabolic troughs and solar tower plants utilize onlyCHINA'S DUST AFFECTS SOLAR RESOURCE IN THE U.S.: A CASE STUDY Christian A. Gueymard Nels S of how long- range aerosol transport may temporarily affect the U.S. solar resource. Broadband

Oregon, University of

255

Public Interest Energy Research (PIER) Program FINAL PROJECT REPORT  

E-Print Network (OSTI)

GENERATION USING PARABOLIC TROUGH SOLAR COLLECTION NOVEMBER 2010 CEC5002011040 Prepared for: CaliforniaKenna, Al Halvorsen, and Fred Maner with FritoLay · Ken May with Abengoa Solar · Greg Barker energy research by partnering with RD&D entities, including individuals, businesses, utilities

256

Laboratoire de Conception de Systmes Mcaniques Gnie mcanique  

E-Print Network (OSTI)

(combined cycle) Parabolic trough collectors Advantages Integration of solar renewable energy into a fossil and to fight against climate change. Solar energy transformed by Concentrating Solar Power (CSP) technologies, electrical generation of both solar and fossil installation, thermal energy stored, and fuel consumption

Lausanne, Ecole Polytechnique Fédérale de

257

Engi 9614: Renewable Energy and Resource Conservation, Assignment #2, Nov. 28th "Opportunities and challenges for a sustainable energy future"  

E-Print Network (OSTI)

by 2020 and other experts estimate it will cost towers and parabolic troughs able to withstand these temperatures and how these materials can be best used. 11. Solar thermal and solar photovoltaic systems might be combined and solar thermal and natural gas systems might be combined

Coles, Cynthia

258

CX-100106: Categorical Exclusion Determination  

Office of Energy Efficiency and Renewable Energy (EERE)

Design and Field Testing of Manufactural Advanced Low-Cost Receiver for Parabolic Trough Solar Power Award Number: DE-EE0006813 CX(s) Applied: A9, B3.6 Date: 10/16/2014 Location(s): Vermont Office(s): Golden Field Office

259

NREL: Concentrating Solar Power Research - Data and Resources  

NLE Websites -- All DOE Office Websites (Extended Search)

Data and Resources Data and Resources For concentrating solar power technologies, NREL features the following online solar radiation resource data and solar resource maps, as well as data for renewable energy power plants. Also see TroughNet's data and resources specifically for parabolic trough technology. Concentrating Solar Power Projects around the World NREL, in conjunction with SolarPACES (Solar Power and Chemical Energy Systems), maintains a database of CSP projects around the world with plants that are either operational, under construction, or under development. CSP technologies include parabolic trough, linear Fresnel reflector, power tower, and dish/engine systems. Each project profile includes background information, a listing of project participants, and data on the power-plant

260

Linear Concentrator System Basics for Concentrating Solar Power |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Linear Concentrator System Basics for Concentrating Solar Power Linear Concentrator System Basics for Concentrating Solar Power Linear Concentrator System Basics for Concentrating Solar Power August 20, 2013 - 4:45pm Addthis Photo of numerous parallel rows of parabolic trough collectors tracking the sun. Cooling towers and other generator equipment are in the midst of the troughs, and two water tanks are in the background. The Solar Electric Generating Station IV power plant in California consists of many parallel rows of parabolic trough collectors that track the sun. The cooling towers can be seen with the water plume rising into the air, and white water tanks are in the background. Credit: Sandia National Laboratory / PIX 14955 Linear concentrating solar power (CSP) collectors capture the sun's energy with large mirrors that reflect and focus the sunlight onto a linear

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Project Profile: Advanced High Temperature Trough Collector Developmen...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

collector was selected for the Andasol 1 and 2 plants in Spain, the Kuraymat plant in Egypt, and early Solar Millennium commercial projects in the United States. The NTPro design...

262

Solar electricity prospects in Oman using GIS-based solar radiation maps  

Science Journals Connector (OSTI)

This paper discusses solar power prospects in Oman. First, the geographic and topographic information about Oman are presented. The methodology of producing solar radiation maps using GIS tools is then discussed. The results obtained show very high potential of solar radiation over all the lands of Oman during the whole year. A slope analysis has allowed calculating the yearly electricity generation potential for different Concentrated Solar Power (CSP) technologies such as the parabolic trough, parabolic dish, tower, and concentrated PV. For instance if only 10% of the land of Oman with a slope less than 1% is considered an exploitable land for the parabolic trough CSP technology, then the total calculated potential of yearly electricity generation would be about 7.6 million GWh, which is many multiples of (680 times) the current generation supply in Oman which was about 11,189 GWh in 2007.

Adel Gastli; Yassine Charabi

2010-01-01T23:59:59.000Z

263

Conservation screening curves to compare efficiency investments to power plants: Applications to commercial sector conservation programs  

E-Print Network (OSTI)

7¢/kWh Gas Turbine 5¢/kWh Combined-Cycle Oil Baseload Coal7¢/kWh Gas Turbine 5¢/kWh Combined-Cycle Oi Baseload Coalof Supply Technologies CT Combined- Cycle Oil Baseload Coal

Koomey, Jonathan; Rosenfeld, Arthur H.; Gadgil, Ashok J.

2008-01-01T23:59:59.000Z

264

Project Profile: Innovative Phase Change Thermal Energy Storage...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Phase Change Thermal Energy Storage Solution for Baseload Power Project Profile: Innovative Phase Change Thermal Energy Storage Solution for Baseload Power Infinia logo Infinia,...

265

NREL: Concentrating Solar Power Research - Publications  

NLE Websites -- All DOE Office Websites (Extended Search)

Publications Publications NREL develops publications, including technical reports and papers, about its R&D activities in concentrating solar power, as well as related information. Below you'll find a list of selected NREL publications concerning these activities. Also see TroughNet's publications on parabolic trough technology, and market and economic assessment. For other NREL concentrating solar power publications, you can search NREL's Publications Database. Selected Publications These publications are available as Adobe Acrobat PDFs. Utility-Scale Power Tower Solar Systems: Performance Acceptance Test Guidelines NREL Subcontract Report Author: David Kearney - Kearney & Associates Publication Date: March 2013 Simulating the Value of Concentrating Solar Power with Thermal Energy

266

Energy 101: Concentrating Solar Power  

SciTech Connect

From towers to dishes to linear mirrors to troughs, concentrating solar power (CSP) technologies reflect and collect solar heat to generate electricity. A single CSP plant can generate enough power for about 90,000 homes. This video explains what CSP is, how it works, and how systems like parabolic troughs produce renewable power. For more information on the Office of Energy Efficiency and Renewable Energy's CSP research, see the Solar Energy Technology Program's Concentrating Solar Power Web page at http://www1.eere.energy.gov/solar/csp_program.html.

None

2010-01-01T23:59:59.000Z

267

Energy 101: Concentrating Solar Power  

ScienceCinema (OSTI)

From towers to dishes to linear mirrors to troughs, concentrating solar power (CSP) technologies reflect and collect solar heat to generate electricity. A single CSP plant can generate enough power for about 90,000 homes. This video explains what CSP is, how it works, and how systems like parabolic troughs produce renewable power. For more information on the Office of Energy Efficiency and Renewable Energy's CSP research, see the Solar Energy Technology Program's Concentrating Solar Power Web page at http://www1.eere.energy.gov/solar/csp_program.html.

None

2013-05-29T23:59:59.000Z

268

Building Energy Software Tools Directory: FRESA  

NLE Websites -- All DOE Office Websites (Extended Search)

FRESA FRESA A first-order screening tool to identify potentially cost-effective applications of renewable energy technology on a building and facility level. FRESA (Federal Renewable Energy Screening Assistant) is useful for determining which renewable energy applications require further investigation. Technologies represented include: active solar heating, active solar cooling, solar hot water, daylighting with windows, daylighting with skylights, photovoltaic, solar thermal electric (parabolic dish, parabolic trough, central power tower), wind electricity, small hydropower, biomass electricity (wood, waste, etc.), and cooling load avoidance (multiple glazing, window shading, increased wall insulation, infiltration control). Life-cycle cost calculations comply with 10 CFR 436.

269

Photovoltaic concentrator technology development project. Sixth project integration meeting  

SciTech Connect

Thirty-three abstracts and short papers are presented which describe the current status of research, development, and demonstration of concentrator solar cell technology. Solar concentrators discussed include the parabolic trough, linear focus Fresnel lens, point focus Fresnel lens, and the parabolic dish. Solar cells studied include silicon, GaAs, and AlGaAs. Research on multiple junction cells, combined photovoltaic/thermal collectors, back contact solar cells, and beam splitter modules is described. Concentrator solar cell demonstration programs are reported. Contractor status summaries are given for 33 US DOE concentrator solar cell contracts; a description of the project, project status, and key results to date is included. (WHK)

None

1980-10-01T23:59:59.000Z

270

Renewable Energy | Open Energy Information  

Open Energy Info (EERE)

Renewable Energy Renewable Energy Jump to: navigation, search This article is a stub. You can help OpenEI by expanding it. Renewable Energy is energy obtained from sources which are practically inexhaustible.[1] Prominent examples include solar energy, wind energy, and geothermal energy. The table below lists some of the conversion technologies that are used to harness the energy from these resources[2] . Renewable Resource Energy Conversion Technology Biomass, solid fuels Combustion (direct-fired, cofiring with coal); Gasification/Pyrolysis Biomass, gas and liquid fuels Fuel Cells Geothermal Dry steam electric; Flash electric; Binary cycle electric; Direct use; Geothermal heat pumps Solar Photovoltaics (PV); Concentrating solar thermal electric (parabolic trough, parabolic trough, power tower); Thermal water heating; Absorption chilling

271

Linear Concentrator Systems | Open Energy Information  

Open Energy Info (EERE)

Linear Concentrator Systems Linear Concentrator Systems Jump to: navigation, search Introduction Linear concentrating collector fields consist of a large number of collectors in parallel rows that are typically aligned in a north-south orientation to maximize both annual and summertime energy collection. With a single-axis sun-tracking system, this configuration enables the mirrors to track the sun from east to west during the day, ensuring that the sun reflects continuously onto the receiver tubes. Parabolic Trough Systems The predominant CSP systems currently in operation in the United States are linear concentrators using parabolic trough collectors. In such a system, the receiver tube is positioned along the focal line of each parabola-shaped reflector. The tube is fixed to the mirror structure and

272

Developing Renewable Energy Projects Larger Than 10 MWs at Federal Facilities (Book), Large-Scale Renewable Energy Guide, Federal Energy Management Program (FEMP)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

LARGE-SCALE RENEWABLE ENERGY GUIDE LARGE-SCALE RENEWABLE ENERGY GUIDE Developing Renewable Energy Projects Larger Than 10 MWs at Federal Facilities A Practical Guide to Getting Large-Scale Renewable Energy Projects Financed with Private Capital Cover photos, clockwise from the top: Installing mirrored parabolic trough collectors - (January 19, 2012) Crews work around the clock installing mirrored parabolic trough collectors, built on site, that will cover 3 square miles at Abengoa's Solana Plant. Solana a 280 megawatt utility scale solar power plant (CSP) under construction in Gila Bend, Arizona, USA. When finished it will generate 280 MW 's of clean, sustainable power serving over 70,000 Arizona homes. Photo by Dennis Schroeder, NREL 20097 Dry Lake Wind Power Project in Arizona; Suzlon S88 wind turbines - The 63-MW Dry Lake Wind Power Project in Arizona is the first

273

STATEMENT OF CON SID ERA TIONS REQUEST BY ABENGOA SOLAR INC. (ASI) FOR AN ADVANCE WAIVER OF  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

ABENGOA SOLAR INC. (ASI) FOR AN ADVANCE WAIVER OF ABENGOA SOLAR INC. (ASI) FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN PATENT RIGHTS UNDER DOE AWARD NO. DE-FC36- 08G018037; W(A) 2011-61 ASI has requested a waiver of domestic and foreign patent rights of the United States of America in all subject inventions arising from its participation under the above referenced cooperative agreement entitled ''Development of Next-Generation Parabolic Trough Collectors and Components for CSP Applications." According to ASI's petition, the objective of the project funded by the cooperative agreement is "to develop the technology that is needed to build a competitive parabolic trough industry for the [U.S .] utility mru·ket." Specifically, the scope of work includes the "development of alternative collectors structures, components and field deployment teclmiques.

274

CX-007385: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

85: Categorical Exclusion Determination 85: Categorical Exclusion Determination CX-007385: Categorical Exclusion Determination Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants CX(s) Applied: A9 Date: 12/21/2011 Location(s): Missouri, Colorado Offices(s): Golden Field Office DOE proposes to provide funding to Abengoa Solar, Inc. (Abengoa) to perform development of molten-salt heat transfer fluid technology for parabolic trough solar power plants. Abengoa has received DOE funding for previous efforts in this technology development. This National Environmental Policy Act determination applies to Abengoa's request for federal funding to contract engineering design work and engineering, procurement and construction (EPC) cost estimation for the solar plant.

275

Colorado | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

February 24, 2011 February 24, 2011 CX-005324: Categorical Exclusion Determination Boeing Distribution Management System (BDMS) CX(s) Applied: A1, A9, A11, B1.2, B1.7 Date: 02/24/2011 Location(s): Fort Collins, Colorado Office(s): Electricity Delivery and Energy Reliability, National Energy Technology Laboratory February 16, 2011 CX-005199: Categorical Exclusion Determination Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants CX(s) Applied: A9, B3.6 Date: 02/16/2011 Location(s): Lakewood, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office February 16, 2011 CX-005198: Categorical Exclusion Determination Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants CX(s) Applied: A9, B3.6

276

STATEMENT OF CONSIDERATIONS REQUEST BY ABENGOA SOLAR INC. (ASI) FOR AN ADVANCE WAIVER OF  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

G018038; W(A) 2011-62 G018038; W(A) 2011-62 ASI has requested a waiver of domestic and foreign patent rights of the United States of America in all subject inventions arising from its participation under the above referenced cooperative agreement entitled "Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants." According to ASI ' s petition, the objective of the project funded by the cooperative agreement is "integrate low-cost thermal energy storage with parabolic trough systems. The focus of this effort is to develop an R&D pathway for molten-salt heat transfer fluid (HTF) technology to be moved rapidly to a commercial status." The cooperative agreement includes three phases. Phases I and II are directed to research

277

Categorical Exclusion Determinations: Office of Energy Efficiency and  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6, 2011 6, 2011 CX-005200: Categorical Exclusion Determination Hull Offshore Wind Research and Development CX(s) Applied: A9 Date: 02/16/2011 Location(s): Hull, Massachusetts Office(s): Energy Efficiency and Renewable Energy, Golden Field Office February 16, 2011 CX-005199: Categorical Exclusion Determination Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants CX(s) Applied: A9, B3.6 Date: 02/16/2011 Location(s): Lakewood, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office February 16, 2011 CX-005198: Categorical Exclusion Determination Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants CX(s) Applied: A9, B3.6 Date: 02/16/2011 Location(s): Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office

278

Developing Renewable Energy Projects Larger Than 10 MWs at Federal Facilities (Book), Large-Scale Renewable Energy Guide, Federal Energy Management Program (FEMP)  

NLE Websites -- All DOE Office Websites (Extended Search)

LARGE-SCALE RENEWABLE ENERGY GUIDE LARGE-SCALE RENEWABLE ENERGY GUIDE Developing Renewable Energy Projects Larger Than 10 MWs at Federal Facilities A Practical Guide to Getting Large-Scale Renewable Energy Projects Financed with Private Capital Cover photos, clockwise from the top: Installing mirrored parabolic trough collectors - (January 19, 2012) Crews work around the clock installing mirrored parabolic trough collectors, built on site, that will cover 3 square miles at Abengoa's Solana Plant. Solana a 280 megawatt utility scale solar power plant (CSP) under construction in Gila Bend, Arizona, USA. When finished it will generate 280 MW 's of clean, sustainable power serving over 70,000 Arizona homes. Photo by Dennis Schroeder, NREL 20097 Dry Lake Wind Power Project in Arizona; Suzlon S88 wind turbines - The 63-MW Dry Lake Wind Power Project in Arizona is the first

279

Rethinking wedges  

E-Print Network (OSTI)

wind, biomass, and energy storage systems are not yet mature enough to provide affordable baseload power

Davis, Steven J; Cao, Long; Caldeira, Ken; Hoffert, Martin I

2013-01-01T23:59:59.000Z

280

Performance testing of the Acurex solar-collector Model 3001-03  

SciTech Connect

Results are summarized of tests conducted at the Collector Module Test Facility on an Acurex Model 3001-03 Parabolic Trough Concentrating Solar Collector. Test temperaure range was 100/sup 0/C to 300/sup 0/C. Tests were conducted with the collector axis oriented east-west and again with the collector axis oriented north-south. Three collectors were tested: one using polished aluminum mirrors, one using glass mirrors, and another using an aluminized acrylic film mirror.

Dudley, V.E.; Workhoven, R.M.

1982-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Geometric Modularity in the Thermal Modeling of Solar Steam Turbines  

Science Journals Connector (OSTI)

Abstract To optimize the start-up schedules of steam turbines operating in concentrating solar power plants, accurate predictions of the temperatures within the turbine are required. In previous work by the authors, thermal models of steam turbines have been developed and validated for parabolic trough solar power plant applications. Building on these results, there is an interest to increase the adaptability of the models with respect to different turbine geometries due to the growing trend of having larger steam turbines in parabolic trough and solar tower power plants. In this work, a modular geometric approach has been developed and compared against both the previous modeling approach and 96 h of measured data from an operational parabolic trough power plant. Results show a large degree of agreement with respect to the measured data in spite of the different detail levels. The new model allows for simple and fast prediction of the thermal behavior of different steam turbine sizes and geometries, which is expected to be of significant importance for future concentrating solar power plants.

M. Topel; J. Spelling; M. Jöcker; B. Laumert

2014-01-01T23:59:59.000Z

282

Potential Assessment in Mexico for Solar Process Heat Applications in Food and Textile Industries  

Science Journals Connector (OSTI)

Abstract Industrial sector of Mexico is the second energy consumer, approximately 28% of the national consumption, according to the National Balance of Energy. A potential study carried out within the micro and small food and textile industries has established that they are using 68% of the total energy consumption as thermal energy, most supplied by liquefied gas and followed by natural gas and diesel. The processes use water, low and medium pressure steam mainly at temperatures from 60 to 180 °C. In this context, solar concentrators, especially parabolic troughs, could give an important portion of the required thermal energy. The introduction in the country of a strategy change in the use of the energy is a formidable challenge. Beginning in the country with the erection of small parabolic trough plants in such industries could allow a technical and economic advancement of the technology and the benefits could be presented almost immediately. The methodology for the potential assessment for solar process heat applications in food and textile industries was based on statistical information from the National Balance of Energy, the National Directory of Economic Units and together with questionnaires, phone calls, workshops and in some cases personal interviews. According to such considerations, three scenarios were established and will be described within this paper in terms of the potential of the parabolic trough technology applied in the appropriated industries.

C. Ramos; R. Ramirez; J. Beltran

2014-01-01T23:59:59.000Z

283

Long-time asymptotics for fully nonlinear homogeneous parabolic equations  

E-Print Network (OSTI)

4), 1333–1362 (1991) S. N. Armstrong, M. Trokhimtchouk 18.are credited. References 1. Armstrong, S.N. : Principalparabolic equations Scott N. Armstrong · Maxim Trokhimtchouk

Armstrong, Scott N.; Trokhimtchouk, Maxim

2010-01-01T23:59:59.000Z

284

Analysis of Singularity Lines by Transforms with Parabolic Scaling  

E-Print Network (OSTI)

, Phyathai Road, Patumwan, Bangkok 10330, Thailand. (2) Department of Applied Mathematics, Lappeenranta University of Technology, Lappeenranta, Finland. panuvuth@hotmail.com, jouni.sampo@lut.fi, songkiat

Paris-Sud XI, Université de

285

On some general properties of parabolic conservation equations  

SciTech Connect

This report deals with certain general properties of partial differential equations of the form S(c)c{sub t} + q{sub z} = Q(c), where t may thought of as time, z as distance, c as an intensive quantity (e.g., temperature), and q its flux (e.g., heat flux), and where q depends on both c and c{sub z}. Six topics are studied, namely: Maximum and minimum principles; ordering of solutions; invariance to stretching (affine) groups; stability of steady states; comparability of solutions; and traveling wave solutions. Illustrative examples are given from the field of nonlinear diffusion, applied superconductivity, and helium cryogenics.

Dresner, L.

1993-10-01T23:59:59.000Z

286

A CLASS OF MARKOV PROCESSES ASSOCIATED WITH NONLINEAR PARABOLIC EQUATIONS  

Science Journals Connector (OSTI)

...bI=J [(1 -e-2')]-112eXp[_( a-21- 'm2fda. Now consider a more elaborate problem: au_ 1 62 2 - D*u = 2 a C2U a CIU with coefficients cl and c2 expressible as integrals C = C[UI = fRn c(axbl. . ..bbn)U. . . (u dbl ... dbn...

H. P. McKean; Jr.

1966-01-01T23:59:59.000Z

287

On the parabolic Stefan problem for Ostwald Ripening with kinetic ...  

E-Print Network (OSTI)

Feb 2, 2012 ... according to the Gibbs–Thomson condition, on the interface, is pro- .... standard techniques of homogenization such as asymptotic expansion, ..... A simple such setting is to have the particles located on a regular three-dimensional lattice of ...... is the limit of the empirical measure of the initial radii R? i0.

2012-02-17T23:59:59.000Z

288

On Parallel Asynchronous HighOrder Solutions of Parabolic PDEs  

E-Print Network (OSTI)

) MIMD multiprocessors. Our approach is demon­ strated for the solution of the multidimensional heat for promotion of research at the Technion. 1 #12; allow larger time­step, we use remote neighbors' values rather efficiency and in the case which uses remote neighbors' values an almost linear speedup is achieved. Schemes

Averbuch, Amir

289

Convergence properties of the local defect correction method for parabolic  

E-Print Network (OSTI)

and, for a one-dimensional heat equation, we study its properties analytically. Numerical experiment of adaptive grid techniques. In adaptive grid methods, a fine grid spacing and a relatively small time step requirements are minimized. An adaptive grid technique of particular interest is the Local Defect Correction

Eindhoven, Technische Universiteit

290

Components Makeover Gives Concentrating Solar Power a Boost (Fact Sheet), The Spectrum of Clean Energy Innovation, NREL (National Renewable Energy Laboratory)  

NLE Websites -- All DOE Office Websites (Extended Search)

Components Makeover Gives Components Makeover Gives Concentrating Solar Power a Boost Parabolic trough technology is the most mature of the various concentrating solar power (CSP) options. But scientists at the National Renewable Energy Laboratory (NREL) continue to make advances on trough systems through innovative research on various components in industrial partnerships with Acciona Solar Power, SkyFuel, Schott Solar, and others. The results are leading to improved system efficiencies and lower costs for CSP plants. Space Frames for Lower Costs To maximize the overall efficiency of the conventional glass-mirror trough system, NREL worked with Acciona Solar Power-then known as Solargenix Energy-to improve vari- ous system components. A key focus was the structural framework that holds the mirrors

291

Design of advanced fossil-fuel systems (DAFFS): a study of three developing technologies for coal-fired, base-load electric power generation. Integrated coal gasification/combined cycle power plant with Texaco gasification process  

SciTech Connect

The objectives of this report are to present the facility description, plant layouts and additional information which define the conceptual engineering design, and performance and cost estimates for the Texaco Integrated Gasification Combined Cycle (IGCC) power plant. Following the introductory comments, the results of the Texaco IGCC power plant study are summarized in Section 2. In Section 3, a description of plant systems and facilities is provided. Section 4 includes pertinent performance information and assessments of availability, natural resource requirements and environmental impact. Estimates of capital costs, operation and maintenance costs and cost of electricity are presented in Section 5. A Bechtel Group, Inc. assessment and comments on the designs provided by Burns and Roe-Humphreys and Glasgow Synthetic Fuel, Inc. are included in Section 6. The design and cost estimate reports which were prepared by BRHG for those items within their scope of responsibility are included as Appendices A and B, respectively. Appendix C is an equipment list for items within the BGI scope. The design and cost estimate classifications chart referenced in Section 5 is included as Appendix D. 8 references, 17 figures, 15 tables.

Not Available

1983-06-01T23:59:59.000Z

292

Design of advanced fossil-fuel systems (DAFFS): a study of three developing technologies for coal-fired, base-load electric power generation. Integrated coal-gasification/combined power plant with BGC/Lurgi gasification process  

SciTech Connect

The objectives of this report are to present the facility description, plant layouts and additional information which define the conceptual engineering design, and performance and cost estimates for the BGC/Lurgi Integrated Gasification Combined Cycle (IGCC) power plant. Following the introductory comments, the results of the British Gas Corporation (BGC)/Lurgi IGCC power plant study are summarized in Section 2. In Secion 3, a description of plant systems and facilities is provided. Section 4 includes pertinent performance information and assessments of availability, natural resource requirements and environmental impact. Estimates of capital costs, operating and maintenance costs and cost of electricity are presented in Section 5. A Bechtel Group Inc. (BGI) assessment and comments on the designs provided by Burns and Roe-Humphreys and Glasgow Synthetic Fuels, Inc. (BRHG) are included in Section 6. The design and cost estimate reports which were prepared by BRHG for those items within their scope of responsibility are included as Appendices A and B, respectively. Apendix C is an equipment list for items within the BGI scope. The design and cost estimate classifications chart referenced in Section 5 is included as Appendix D. 8 references, 18 figures, 5 tables.

Not Available

1983-06-01T23:59:59.000Z

293

Solar Trough Performance Evaluation: Cooperative Research and Development Final Report, CRADA Number CRD-08-00289  

SciTech Connect

New HCEs were installed on the hot sides of the thermal loops at SEGS VIII and IX from mid-2007 to mid-2008. Due to significant increases in plant performance, an interest in a further increase performance by installing new HCEs on the cold portions of the loop developed. Although it was assumed that the plant performance would increase, the exact amount was unknown. The objective of this project was to estimate the performance improvements with new HCEs installed on the cold sides of the loop, with performance being evaluated as potential increases in electrical power production (megawatt-hours). A comparison of performance prior to and post installation of new HCEs on the hot sides of the loops was done. For completeness, an estimate of performance losses - such as the optical efficiency, mirror reflectivity, and optical accuracy - was also included in this analysis. National Renewable Energy Laboratory's (NREL's) HCE Survey System was used to determine if the HCEs were hot or cold.

Gray, A.

2011-05-01T23:59:59.000Z

294

Seismic response to fluid injection and production in two Salton Trough geothermal fields, southern California  

E-Print Network (OSTI)

geothermal field, Imperial Valley, California. GSA Bulletin,2011). Worldwide Projects: Imperial Valley (United States).2012 Brawley earthquake, Imperial Valley. Bulletin of the

Lajoie, Lia Joyce

2012-01-01T23:59:59.000Z

295

Geodetic investigation into the deformation of the Salton Trough Brendan W. Crowell,1,2  

E-Print Network (OSTI)

necessary for hazard assessment. The Imperial Fault, at the southern end of the Imperial Valley, is a fast-scale subsidence and anomalous heat flow exist in the Imperial Valley near Obsidian Buttes and Mexico's Cerro]). From the terminus of the Imperial Fault and other auxiliary faults such as the Brawley and Superstition

Fialko, Yuri

296

GEOTHERMAL ENERGY DEVELOPMENT FROM THE SALTON TROUGH TO THE HIGH CASCADES  

E-Print Network (OSTI)

o r compiling data on geothermal energy and develop- i n g aFigure 1 of the LBL Geothermal Energy A simp1 i f i e dconducted by the LBL Geothermal Energy Group since (XBL 791-

Goldstein, N.E.

2011-01-01T23:59:59.000Z

297

Trough-Focus OTF Based Optical Quality Testing of Whole Slide Scanners for Digital Pathology  

Science Journals Connector (OSTI)

We measure the through-focus OTF of whole slide scanners for optical quality testing and monitoring. Analysis of the OTF data gives a system level evaluation of astigmatism, field...

Shakeri, Mojtaba; Hulsken, Bas; van Vliet, Lucas; Stallinga, Sjoerd

298

Upper Albian OAE 1d event in the Chihuahua Trough, New Mexico, U.S.A.  

Science Journals Connector (OSTI)

Abstract Oceanic anoxic events are clues to ocean processes and are correlation datums. In North America only OAE 1a and 2 are well documented. Based on a low-resolution sampling program, a multi-proxy geochemical approach constrained by a biostratigraphic framework was utilized to identify OAE 1d in the upper part of the upper Albian Mesilla Valley Formation near El Paso, Texas. Chronostratigraphic and biostratigraphic evidence indicate that the OAE 1d event in the Mesilla Valley section is located in the lower part of the upper Albian–Cenomanian Ovoidinium verrucosum zone, which correlates with the uppermost Albian Parathalmanninella appenninica and Stoliczkaia dispar zones. The chronostratigraphic age of the geochemical event in the Mesilla Valley Formation is uppermost Albian (97.39–97.30 Ma). The classic geochemical signatures for \\{OAEs\\} are enriched total organic carbon (TOC) concentrations and coupled positive ?13C excursions. OAE 1d at this location records TOC values ranging from 0.25 to 0.69 wt.% throughout the Mesilla Valley Formation, where TOC increases during the OAE (21.0–40.0 m) to more than 0.40 wt.%. Interestingly, the organic matter in the Mesilla Valley is dominantly type III, which indicates a pervasive terrigenous source. Although marine organic matter is abundant from the base into the middle of the proposed OAE interval, it is progressively replaced by terrestrial material above the OAE section during progradation. The ?13Corganic values record a positive ?13C shift of +1.6‰ from ?26.41 to ?24.80‰ across the stratigraphic interval from 21.0 to 40.0 m, which correlates with OAE 1d. Mn and Fe geochemistry suggest the depositional conditions of the Mesilla Valley Formation were dominated by anoxic and possibly Fe-rich bottom waters, specifically during the time period associated with the OAE 1d event. This interpretation is supported by the presence of Fe enrichment recorded by FeTotal/Al and FeHighly Reactive/FeT with the lack of Fepyrite/FeHighly Reactive associated with Mn depletion.

R.W. Scott; Michael Formolo; Natalie Rush; Jeremy D. Owens; Francisca Oboh-Ikuenobe

2013-01-01T23:59:59.000Z

299

GEOTHERMAL ENERGY DEVELOPMENT FROM THE SALTON TROUGH TO THE HIGH CASCADES  

E-Print Network (OSTI)

Figure 1 of the LBL Geothermal Energy A simp1 i f i e dconducted by the LBL Geothermal Energy Group since (XBL 791-OF ENERGY DIVISION OF GEOTHERMAL ENERGY LAWRENCE BERKELEY

Goldstein, N.E.

2011-01-01T23:59:59.000Z

300

Vector magnetic analysis within the southern Ayu Trough, equatorial western Pacific  

Science Journals Connector (OSTI)

......the induced-field effect due to the metallic body of the ship. In this study...noticeable when the ship makes a sudden turn. To investigate the effect of VRM, we examined...compensate for the ship's effect. For each component......

Sang-Mook Lee; Seung-Sep Kim

2004-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Seismic response to fluid injection and production in two Salton Trough geothermal fields, southern California  

E-Print Network (OSTI)

D I P IPPO , R. (2012). Geothermal Power Plants: Principles,in the vicinity of geothermal power plants worldwide, it isregional effects of geothermal power production. This study

Lajoie, Lia Joyce

2012-01-01T23:59:59.000Z

302

Analysis of fine ELF wave structures observed poleward from the ionospheric trough  

E-Print Network (OSTI)

for the electric field was from DC up to 3.5 MHz and for the magnetic field from a few hertz up to 20 kHz. The emissions are detected in the ELF range (200 Hz to 3 kHz) in the upper ionosphere during geomagnetic up to 20 kHz with a frequency resolution of 19.53 Hz and a time PARROT ET AL. ©2014. American

Santolik, Ondrej

303

A note on the isostatic compensation and origin of King's Trough  

Science Journals Connector (OSTI)

......evolution of the Pacific Ocean basin, Nuture, 283, 532-537...the unbending of the magnetic bight at the time of anomaly 24...dissimilar to that of normal ocean basins except for variations in the...evolution of the Pacific Ocean basin, Nufure, 283,532--537......

Keith E. Louden

1983-11-01T23:59:59.000Z

304

Broad absorption line quasars with redshifted troughs: high-velocity infall or rotationally dominated outflows?  

Science Journals Connector (OSTI)

......Section-5.5). 18 J1034 has an unresolved, red object 4.62arcsec away which was not...K., Kilic M., Anderson S. F., Gates E. AJ (2008) 136:76. Hall P. B...J. ApJ (2012) 746:2. Knigge C. , Woods J. A., Drew J. E. MNRAS (1995) 273......

P. B. Hall; W. N. Brandt; P. Petitjean; I. Pâris; N. Filiz Ak; Yue Shen; R. R. Gibson; É. Aubourg; S. F. Anderson; D. P. Schneider; D. Bizyaev; J. Brinkmann; E. Malanushenko; V. Malanushenko; A. D. Myers; D. J. Oravetz; N. P. Ross; A. Shelden; A. E. Simmons; A. Streblyanska; B. A. Weaver; D. G. York

2013-01-01T23:59:59.000Z

305

A ~200 ka Pollen record from Okinawa Trough: paleoenvironment reconstruction of glacial-interglacial cycles  

E-Print Network (OSTI)

5 Universit de Perpignan Via Domitia, 66860 Perpignan, France 6 Laboratoire des Sciences du Climat that the percentage of Cyperaceae was extremely abundant in the glacial stages with the notably increasing of solar radiation and monsoonal hal-00929941,version1-17Jan2014 Author manuscript, published in "Science

306

Role of tropical cyclones along the monsoon trough in the 2011 Thai flood and interannual variability  

Science Journals Connector (OSTI)

We examined the atmospheric circulation patterns that were responsible for the heavy flooding that occurred in Thailand in 2011. We also investigated interannual variation in precipitation over the Indochina Peninsula over a 33-year period from ...

Hiroshi G. Takahashi; Hatsuki Fujinami; Tetsuzo Yasunari; Jun Matsumoto; Somchai Baimoung

307

On the ‘high spots’ of fundamental sloshing modes in a trough  

Science Journals Connector (OSTI)

...corresponding to the fundamental eigenvalue of problem...corresponding eigenfunction does not vanish on F D...independent of l. If the fundamental eigenvalue is nu 1...eigenfunctions, one of which does not depend on z, and...us investigate those fundamental eigenfunctions that...

2011-01-01T23:59:59.000Z

308

GEOTHERMAL ENERGY DEVELOPMENT FROM THE SALTON TROUGH TO THE HIGH CASCADES  

E-Print Network (OSTI)

Figure 1 of the LBL Geothermal Energy A simp1 i f i e dconducted by the LBL Geothermal Energy Group since (XBL 791-Californta 94720 GEOTHERMAL ENERGY DEVELOPMENT FROM The map

Goldstein, N.E.

2011-01-01T23:59:59.000Z

309

GEOTHERMAL ENERGY DEVELOPMENT FROM THE SALTON TROUGH TO THE HIGH CASCADES  

E-Print Network (OSTI)

Figure 1 of the LBL Geothermal Energy A simp1 i f i e dconducted by the LBL Geothermal Energy Group since (XBL 791-that its ux would not GEOTHERMAL ENERGY DEVELOPMENT FROM THE

Goldstein, N.E.

2011-01-01T23:59:59.000Z

310

GEOTHERMAL ENERGY DEVELOPMENT FROM THE SALTON TROUGH TO THE HIGH CASCADES  

E-Print Network (OSTI)

de E l e c t r k t d a d (CFE) o f k x t c o has operatede l e c t r i c power fT CFE i n the f a i r l y nearagreement was slgned between CFE and bDE t o conduct a stu4y

Goldstein, N.E.

2011-01-01T23:59:59.000Z

311

Deep-Sea Research I 51 (2004) 17691780 Sedimentation in the Southern Okinawa Trough: enhanced  

E-Print Network (OSTI)

conducted by the US during AD 1952­1954 at the Enewetak and Bikini Atolls. The vertical offset between

Huh, Chih-An

312

Utility-Scale Concentrating Solar Power and Photovoltaic Projects: A Technology and Market Overview  

SciTech Connect

Over the last several years, solar energy technologies have been, or are in the process of being, deployed at unprecedented levels. A critical recent development, resulting from the massive scale of projects in progress or recently completed, is having the power sold directly to electric utilities. Such 'utility-scale' systems offer the opportunity to deploy solar technologies far faster than the traditional 'behind-the-meter' projects designed to offset retail load. Moreover, these systems have employed significant economies of scale during construction and operation, attracting financial capital, which in turn can reduce the delivered cost of power. This report is a summary of the current U.S. utility-scale solar state-of-the-market and development pipeline. Utility-scale solar energy systems are generally categorized as one of two basic designs: concentrating solar power (CSP) and photovoltaic (PV). CSP systems can be further delineated into four commercially available technologies: parabolic trough, central receiver (CR), parabolic dish, and linear Fresnel reflector. CSP systems can also be categorized as hybrid, which combine a solar-based system (generally parabolic trough, CR, or linear Fresnel) and a fossil fuel energy system to produce electric power or steam.

Mendelsohn, M.; Lowder, T.; Canavan, B.

2012-04-01T23:59:59.000Z

313

SunShot Concentrating Solar Power Program Update  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

1 Industry, 8 National Labs CSP Baseload (2010) * Develop CSP baseload systems with capacity factor: >75%; Size: >100 MW; LCOE: <8-9kWh (adjusted 6kWh) * 53M total DOE...

314

NREL: Awards and Honors - R&D 100 Awards  

NLE Websites -- All DOE Office Websites (Extended Search)

R&D 100 Awards R&D 100 Awards Since its inception as the Solar Energy Research Institute (SERI) in 1977, NREL/SERI has won 52 R&D 100 awards. 2013 Image Processing Occupancy Sensor (IPOS) Isothermal Battery Calorimeters (IBCs) Mono-crystalline Solar Cells 2012 Desiccant-enhanced Evaporative (DEVAP) Air-Conditioning Cycle SJ3 Solar Cells 2011 Innovalight Silicon Ink Process Flash Quantum Efficiency (Flash QE) System for Solar Cells Optical Cavity Furnace 2010 "Black Silicon" Nanocatalytic Wet-Chemical Etch Amonix 7700 Solar Power Generator 2009 Ultra-Accelerated Weathering System (UAWS) SkyTrough(tm) Parabolic Trough Solar Concentrating Collector PowerPlane UX Microbattery 2008 Inverted Metamorphic Multijunction (IMM) Solar Cell Hybrid CIGS (Copper Indium Gallium Diselenide)

315

A novel power block for CSP systems  

SciTech Connect

Concentrating Solar Thermal Power (CSP) and in particular parabolic trough, is a proven large-scale solar power technology. However, CSP cost is not yet competitive with conventional alternatives unless subsidized. Current CSP plants typically include a condensing steam cycle power block which was preferably designed for a continuous operation and higher operating conditions and therefore, limits the overall plant cost effectiveness and deployment. The drawbacks of this power block are as follows: (i) no power generation during low insolation periods (ii) expensive, large condenser (typically water cooled) due to the poor extracted steam properties (high specific volume, sub-atmospheric pressure) and (iii) high installation and operation costs. In the current study, a different power block scheme is proposed to eliminate these obstacles. This power block includes a top Rankine cycle with a back pressure steam turbine and a bottoming Kalina cycle comprising another back pressure turbine and using ammonia-water mixture as a working fluid. The bottoming (moderate temperature) cycle allows power production during low insolation periods. Because of the superior ammonia-water vapor properties, the condensing system requirements are much less demanding and the operation costs are lowered. Accordingly, air cooled condensers can be used with lower economical penalty. Another advantage is that back pressure steam turbines have a less complex design than condensing steam turbines which make their costs lower. All of these improvements could make the combined cycle unit more cost effective. This unit can be applicable in both parabolic trough and central receiver (solar tower) plants. The potential advantage of the new power block is illustrated by a detailed techno-economical analysis of two 50 MW parabolic trough power plants, comparing between the standard and the novel power block. The results indicate that the proposed plant suggests a 4-11% electricity cost saving. (author)

Mittelman, Gur [ASP Ltd., Advanced Solar Power, Industrial Zone, Be'er Tuviyya (Israel); Epstein, Michael [Solar Research Facilities Unit, Weizmann Institute of Science (Israel)

2010-10-15T23:59:59.000Z

316

Meta-Analysis of Estimates of Life Cycle Greenhouse Gas Emissions from Concentrating Solar Power: Preprint  

SciTech Connect

In reviewing life cycle assessment (LCA) literature of utility-scale CSP systems, this analysis focuses on clarifying central tendency and reducing variability in estimates of life cycle greenhouse gas (GHG) emissions through a meta-analytical process called harmonization. From 125 references reviewed, 10 produced 36 independent GHG emission estimates passing screens for quality and relevance: 19 for parabolic trough technology and 17 for power tower technology. The interquartile range (IQR) of published GHG emission estimates was 83 and 20 g CO2eq/kWh for trough and tower, respectively, with medians of 26 and 38 g CO2eq/kWh. Two levels of harmonization were applied. Light harmonization reduced variability in published estimates by using consistent values for key parameters pertaining to plant design and performance. Compared to the published estimates, IQR was reduced by 69% and median increased by 76% for troughs. IQR was reduced by 26% for towers, and median was reduced by 34%. A second level of harmonization was applied to five well-documented trough LC GHG emission estimates, harmonizing to consistent values for GHG emissions embodied in materials and from construction activities. As a result, their median was further reduced by 5%, while the range increased by 6%. In sum, harmonization clarified previous results.

Heath, G. A.; Burkhardt, J. J.

2011-09-01T23:59:59.000Z

317

Application of solar thermal energy to buildings and industry  

SciTech Connect

Flat plate collectors and evacuated tube collectors are described, as are parabolic troughs, Fresnel lenses, and compound parabolic concentrators. Use of solar energy for domestic hot water and for space heating and cooling are discussed. Some useful references and methods of system design and sizing are given. This includes mention of the importance of economic analysis. The suitability of solar energy for industrial use is discussed, and solar ponds, point-focus receivers and central receivers are briefly described. The use of solar energy for process hot water, drying and dehydration, and process steam are examined, industrial process heat field tests by the Department of Energy are discussed, and a solar total energy system in Shenandoah, GA is briefly described. (LEW)

Kutscher, C. F.

1981-05-01T23:59:59.000Z

318

Multi-Criteria Decision Analysis of Concentrated Solar Power with Thermal Energy Storage and Dry Cooling  

Science Journals Connector (OSTI)

For comparison, the ratio of life cycle GHG emissions to LCOE for pulverized coal (PC), integrated gasification combined cycle (IGCC), natural gas combined cycle (NGCC), PC with carbon capture and storage (CCS), IGCC with CCS, and NGCC with CCS are 31, 19, 12, 3, 2, and 2 kgCO2eq/$, respectively (Supporting Information Table S4, p S10). ... Poullikkas, A.Economic analysis of power generation from parabolic trough solar thermal plants for the Mediterranean region—A case study for the island of Cyprus Renewable Sustainable Energy Rev. 2009, 13 ( 9) 2474– 2484 ...

Sharon J. W. Klein

2013-11-18T23:59:59.000Z

319

Scattering Solar Thermal Concentrators  

Energy.gov (U.S. Department of Energy (DOE))

"This fact sheet describes a scattering solar thermal concentrators project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by the Pennsylvania State University, is working to demonstrate a new, scattering-based approach to concentrating sunlight that aims to improve the overall performance and reliability of the collector field. The research team aims to show that scattering solar thermal collectors are capable of achieving optical performance equal to state-of-the-art parabolic trough systems, but with the added benefits of immunity to wind-load tracking error, more efficient land use, and utilization of stationary receivers."

320

Bates solar industrial process-steam application: preliminary design review  

SciTech Connect

The design is analyzed for a parabolic trough solar process heat system for a cardboard corrugation fabrication facility in Texas. The program is briefly reviewed, including an analysis of the plant and process. The performance modeling for the system is discussed, and the solar system structural design, collector subsystem, heat transport and distribution subsystem are analyzed. The selection of the heat transfer fluid, and ullage and fluid maintenance are discussed, and the master control system and data acquisition system are described. Testing of environmental degradation of materials is briefly discussed. A brief preliminary cost analysis is included. (LEW)

Not Available

1980-01-07T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Modeling of underwater noise from pile driving using coupled finite element and parabolic equation model with improved parabolic equation starting field  

Science Journals Connector (OSTI)

An offshore wind farm will be constructed in the Yellow Sea west of Korean Peninsula where there are extensive fishing activity and numerous fishery farms. To study the effect of underwater piling noise on fishing and marine lives we model the pile driving noise propagation using coupled FE and PE model. The near-field noise is computed by FE model considering detailed specifications of the pile driving system. We apply 2D axis-symmetric geometry and utilize acoustic structure interaction analysis in the frequency domain. The FE results are used to compose the starting field for PE model where appropriate range selection is an important factor to cover most of the contributing ray paths. Extrapolation technique to compensate the lack of FE data and the numerical filtering method to smooth the FE result are discussed. In the far-field the noise propagation is modeled by the split step Pade PE algorithm. The improved PE starting field seems to give refined result than previous coupled model.

Jungyong Park

2013-01-01T23:59:59.000Z

322

SunShot Initiative: Encapsulated Phase Change Material in Thermal Storage  

NLE Websites -- All DOE Office Websites (Extended Search)

Encapsulated Phase Change Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants to someone by E-mail Share SunShot Initiative: Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants on Facebook Tweet about SunShot Initiative: Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants on Twitter Bookmark SunShot Initiative: Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants on Google Bookmark SunShot Initiative: Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants on Delicious Rank SunShot Initiative: Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants on Digg Find More places to share SunShot Initiative: Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants on

323

Final test results for the Schott HCE on a LS-2 collector.  

SciTech Connect

Sandia National Laboratories has completed thermal performance testing on the Schott parabolic trough receiver using the LS-2 collector on the Sandia rotating platform at the National Solar Thermal Test Facility in Albuquerque, NM. This testing was funded as part of the US DOE Sun-Lab USA-Trough program. The receiver tested was a new Schott receiver, known as Heat Collector Elements (HCEs). Schott is a new manufacturer of trough HCEs. The Schott HCEs are 4m long; therefore, two were joined and mounted on the LS-2 collector module for the test. The Schott HCE design consists of a 70mm diameter high solar absorptance coated stainless steel (SS) tube encapsulated within a 125mm diameter Pyrex{reg_sign} glass tube with vacuum in the annulus formed between the SS and glass tube to minimize convection heat losses. The Schott HCE design is unique in two regards. First, the bellows used to compensate for the difference in thermal expansion between the metal and glass tube are inside the glass envelope rather than outside. Second, the composition of materials at the glass-to-metal seal has very similar thermal expansion coefficients making the joint less prone to breakage from thermal shock. Sandia National Laboratories provided both the azimuth and elevation collector module tracking systems used during the tests. The test results showed the efficiency of the Schott HCE to be very similar to current HCEs being manufactured by Solel. This testing provided performance verification for the use of Schott tubes with Solargenix trough collector assemblies at currently planned trough power plant projects in Arizona and Nevada.

Moss, Timothy A.; Brosseau, Douglas A.

2005-07-01T23:59:59.000Z

324

Visual Scanning Hartmann Optical Tester (VSHOT) Uncertainty Analysis (Milestone Report)  

SciTech Connect

In 1997, an uncertainty analysis was conducted of the Video Scanning Hartmann Optical Tester (VSHOT). In 2010, we have completed a new analysis, based primarily on the geometric optics of the system, and it shows sensitivities to various design and operational parameters. We discuss sources of error with measuring devices, instrument calibrations, and operator measurements for a parabolic trough mirror panel test. These help to guide the operator in proper setup, and help end-users to understand the data they are provided. We include both the systematic (bias) and random (precision) errors for VSHOT testing and their contributions to the uncertainty. The contributing factors we considered in this study are: target tilt; target face to laser output distance; instrument vertical offset; laser output angle; distance between the tool and the test piece; camera calibration; and laser scanner. These contributing factors were applied to the calculated slope error, focal length, and test article tilt that are generated by the VSHOT data processing. Results show the estimated 2-sigma uncertainty in slope error for a parabolic trough line scan test to be +/-0.2 milliradians; uncertainty in the focal length is +/- 0.1 mm, and the uncertainty in test article tilt is +/- 0.04 milliradians.

Gray, A.; Lewandowski, A.; Wendelin, T.

2010-10-01T23:59:59.000Z

325

Solar-Augment Potential of U.S. Fossil-Fired Power Plants  

SciTech Connect

Concentrating Solar Power (CSP) systems utilize solar thermal energy for the generation of electric power. This attribute makes it relatively easy to integrate CSP systems with fossil-fired power plants. The 'solar-augment' of fossil power plants offers a lower cost and lower risk alternative to stand-alone solar plant construction. This study ranked the potential to add solar thermal energy to coal-fired and natural gas combined cycle (NGCC) plants found throughout 16 states in the southeast and southwest United States. Each generating unit was ranked in six categories to create an overall score ranging from Excellent to Not Considered. Separate analysis was performed for parabolic trough and power tower technologies due to the difference in the steam temperatures that each can generate. The study found a potential for over 11 GWe of parabolic trough and over 21 GWe of power tower capacity. Power towers offer more capacity and higher quality integration due to the greater steam temperatures that can be achieved. The best sites were in the sunny southwest, but all states had at least one site that ranked Good for augmentation.

Turchi, C.; Langle, N.; Bedilion, R.; Libby, C.

2011-02-01T23:59:59.000Z

326

Optical performance of an azimuth tracking linear Fresnel solar concentrator  

Science Journals Connector (OSTI)

Abstracts In this paper, a linear Fresnel solar concentrator installed on a solar azimuth tracker is studied. Based on the integration of the effective source distribution for a reflection point and the whole reflector area, we develop an analytical model to calculate the intercept factor of the concentrator and analyze its performance over a year. The prediction of our analytical optical model agrees pretty well with that of the ray tracing program SolTRACE. Then we study the effects of the main design parameters on the performance of the system. The results show that annual mean total efficiency of 61% can be obtained in optimized design when the operational temperature of the receiver is 400 °C. The performance of the azimuth tracking linear Fresnel solar concentrator (ATLFSC) is compared with that of the parabolic trough collector. It is found that the cosine factor, intercept factor and total efficiency of the ATLFSC are better than those of parabolic trough collector, showing that the ATLFSC may have great potential for solar energy utilization.

Farong Huang; Longlong Li; Weidong Huang

2014-01-01T23:59:59.000Z

327

Computationally efficient parabolic equation solutions to seismo-acoustic problems involving  

E-Print Network (OSTI)

or low-shear elastic layers Adam M. Metzlera) Applied Research Laboratories, University of Texas at Austin, Austin, Texas 78713 ametzler@arlut.utexas.edu Jon M. Collis Department of Applied Mathematics Society of America PACS numbers: 43.30.Ma [AL] Date Received: November 30, 2012 Date Accepted: February 19

328

Elastic parabolic equation solutions for underwater acoustic problems using seismic sources  

E-Print Network (OSTI)

, Washington 98105 Jon M. Collis Department of Applied Mathematics and Statistics, Colorado School of Mines.1121/1.4790355] PACS number(s): 43.30.Ma, 43.30.Dr, 43.20.Gp, 43.30.Zk [MS] Pages: 1358­1367 I. INTRODUCTION A class

329

The reef-building coral Siderastrea siderea exhibits parabolic responses to ocean acidification and warming  

Science Journals Connector (OSTI)

...ocean acidification and warming Karl D. Castillo 1 Justin...are predicted to cause global average surface ocean...2553 microatm) and warming (25, 28, 32C) on...ocean acidification and global warming through pH up-regulation...

2014-01-01T23:59:59.000Z

330

Divergence form nonlinear nonsmooth parabolic equations with locally arbitrary growth conditions and nonlinear maximal regularity  

E-Print Network (OSTI)

This is a generalization of our prior work on the compact fixed point theory for the elliptic Rosseland-type equations. We obtain the maximum principle without the technical Steklov techniques. Inspired by the Rosseland equation in the conduction-radiation coupled heat transfer, we use the locally arbitrary growth conditions instead of the common global restricted growth conditions. Its physical meaning is: the absolute temperature should be positive and bounded. There exists a fixed point for the linearized map (compact and continuous in $L^2$) in a closed convex set. We also consider the nonlinear maximal regularity in Sobolev space.

Qiao-fu Zhang

2012-05-15T23:59:59.000Z

331

Weak solutions to a parabolic nonlinear system arising in biological dynamic in the soil  

E-Print Network (OSTI)

+ µ + r + , q2(u) = k u1 Ks + u2 , q3(u) = c1 u5 Km + u5 , q4(u) = c2 u5 Km + u5 , q5(u) = , q6(u) = 0, f1(u) = 0, f2(u) = u5 Km + u5 (c1u3 + c2u4) + u5 + µu1 2 , f3(u) = u5 + µu1 2 , f4(u) = 0, f5(u) = u

Frey, Pascal

332

DIFFERENCE-QUADRATURE SCHEMES FOR NONLINEAR DEGENERATE PARABOLIC INTEGRO-PDE  

E-Print Network (OSTI)

equation. This work was supported by the Research Council of Norway (NFR) through the project "Integro of the the international research program on Nonlinear Partial Differential Equations at the Centre for Advanced Study) is a positive, possibly singular, Radon measure on RM \\{0}; precise assumptions will be given later. The non

333

Property estimation using inverse methods for elliptic and parabolic partial differential equations  

E-Print Network (OSTI)

. Numerical experiments are conducted using synthetic data and the robustness of the proposed scheme is investigated....

Parmekar, Sandeep

2012-06-07T23:59:59.000Z

334

Power generation from thermoelectric cells by using solar parabolic concentration dish.  

E-Print Network (OSTI)

??Thermoelectric and solar-energy technologies are the focus of significant research, and can make a major contribution to the need to find alternative methods of power… (more)

Fan, H

2011-01-01T23:59:59.000Z

335

Analitic modeling of a solar power plant with parabolic linear collectors.  

E-Print Network (OSTI)

??Foi desenvolvido um modelo analÃtico de um sistema solar tÃrmico de geraÃÃo de eletricidade, com concentradores parabÃlicos de foco linear. O modelo permite simular, realizar… (more)

Milton Matos Rolim

2007-01-01T23:59:59.000Z

336

NREL: Concentrating Solar Power Research Home Page  

NLE Websites -- All DOE Office Websites (Extended Search)

A collage of Concentrating Solar Power photographs. The first photo shows a dish-engine solar system. The second is of a SAIC Stirling dish collector. And the third photo shows a SkyTrough solar concentrator located on a mesa top. A collage of Concentrating Solar Power photographs. The first photo shows a dish-engine solar system. The second is of a SAIC Stirling dish collector. And the third photo shows a SkyTrough solar concentrator located on a mesa top. NREL collaborates with industry to further the research and development (R&D) of concentrating solar power (CSP) plant and solar thermal technologies. NREL's projects in concentrating solar power focus on components R&D and systems analysis related to power tower and parabolic trough technologies: Collectors Receivers Power block Thermal energy storage Analysis. In addition, NREL has received funding through the following competitively awarded projects: 10-megawatt supercritical carbon dioxide (s-CO2) turbine test Near-blackbody, enclosed-particle receiver integrated with a

337

Low Cost Ceramics:Low Cost Ceramics: Applications in Water FiltrationApplications in Water Filtration  

E-Print Network (OSTI)

Drawbacks of parabolic mirrors (fires) and solarDrawbacks of parabolic mirrors (fires) and solar cookers

Petta, Jason

338

Langmuir Trough and Brewster Angle Microscopy Study of Model Lung Surfactant Monolayers at the Air/Aqueous Interface  

E-Print Network (OSTI)

of the subphase was lower than the main phase transition temperature. The fusion of the domains was believed monolayer, fusion of the domains appear to decrease. The fusion of the domains as the compression rate increased in a cold monolayer suggest that a faster compression rate can induce enough fluctuations

339

Microbial community in a sediment-hosted CO2 lake of the southern Okinawa Trough hydrothermal system  

Science Journals Connector (OSTI)

...levels of biologically damaging solar UV radiation may be significantly...smoker vents (Tiger and Lion chimneys) (Fig. 1 B), with vent fluid...Yonaguni Knoll IV. (B) “Lion chimney,” one of the most active black...this field. (C) “Crystal chimney,” one of the vapor-rich clear...

Fumio Inagaki; Marcel M. M. Kuypers; Urumu Tsunogai; Jun-ichiro Ishibashi; Ko-ichi Nakamura; Tina Treude; Satoru Ohkubo; Miwako Nakaseama; Kaul Gena; Hitoshi Chiba; Hisako Hirayama; Takuro Nunoura; Ken Takai; Bo B. Jørgensen; Koki Horikoshi; Antje Boetius

2006-01-01T23:59:59.000Z

340

Chapter 3 - Solar Energy Collectors  

Science Journals Connector (OSTI)

Abstract Chapter 3 gives a review of solar collectors which are the main components of any solar system. The review includes various types of stationary and sun-tracking collectors. The stationary collectors include flat-plate collectors (FPCs), under which glazing materials, collector absorbing plates, and collector construction are presented; compound parabolic collectors (CPCs) and evacuated tube collectors (ETCs). The sun-tracking concentrating collectors section cover parabolic trough collectors (PTCs), which include parabola construction and tracking mechanisms; Fresnel collectors; parabolic dish reflector and heliostat field collector. This review is followed by the optical and thermal analysis of both \\{FPCs\\} and concentrating collectors. The analysis for \\{FPCs\\} includes both water and air type systems whereas the analysis for concentrating collectors includes the CPC and the PTC. The analysis of flat-plate water collectors starts with an analysis of the absorbed solar radiation followed by collector energy losses, temperature distribution between the tubes, collector efficiency factor, heat removal factor, flow factor, and thermal efficiency. This is followed by practical considerations concerning FPCs. Subsequently, concentrating collectors are considered which include optical and thermal analysis of a CPC and optical and thermal analysis of PTCs. The chapter includes also the second law analysis of solar thermal systems and includes minimum entropy generation rate, optimum collector temperature, and non-isothermal collector analysis.

Soteris A. Kalogirou

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Enabling Utility-Scale Electrical Energy Storage through Underground Hydrogen-Natural Gas Co-Storage.  

E-Print Network (OSTI)

??Energy storage technology is needed for the storage of surplus baseload generation and the storage of intermittent wind power, because it can increase the flexibility… (more)

Peng, Dan

2013-01-01T23:59:59.000Z

342

Consortium for Advanced Simulation of Light Water Reactors (CASL...  

NLE Websites -- All DOE Office Websites (Extended Search)

nation's carbon-free energy and safely provides reliable baseload electricity for the US grid. CASL Names Bennett Johnston to Board of Directors Posted: August 31, 2010 Former...

343

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Distribution Network Transmission Network Baseload Power Peaking Power Need for Demand Response (DR) Variable Power from Wind Solar Farms 50% 30% Continued geo- growth in...

344

Geothermal Technologies Program Peer Review Program June 6 -...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

highlighting activities supporting its goal to reduce the cost of baseload geothermal energy and accelerate the development of geothermal resources. gtppeerreviewplenary...

345

Possibilities of Geothermal Energy and its Competitiveness  with Other Energy Sources.  

E-Print Network (OSTI)

?? Geothermal Energy is one of the common talks at present. It has the potential to run long term and can provide base-load energy, at… (more)

Hasan, Farhan

2014-01-01T23:59:59.000Z

346

CX-011252: Categorical Exclusion Determination | Department of...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Determination CX-011252: Categorical Exclusion Determination Concentrating Solar Power Heat Integration for Baseload Renewable Energy Deployment CX(s) Applied: A9 Date:...

347

AQUIFER THERMAL ENERGY STORAGE-A SURVEY  

E-Print Network (OSTI)

baseload power and oil-fired boilers for peak and standbyoil-fired boilers used in the conventional system as a backup, and to meet peak

Tsang, Chin Fu

2012-01-01T23:59:59.000Z

348

Solicitations (Issue 212) 1/8 5/15/11  

NLE Websites -- All DOE Office Websites (Extended Search)

storage systems to deliver solar electricity more efficiently around the clock and allow nuclear and fossil baseload resources the flexibility to meet peak demand, 2) Fuel...

349

Pilgrim Hot Springs, Alaska  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

data processing and use of FLIR - fast, cost effective method to measure natural heat loss * Pilgrim Hot Springs Resource Development - baseload power for the Nome area....

350

Audit Report - Implementation of the Department of Energy's Concentrat...  

Office of Environmental Management (EM)

systems that could lead to utility scale baseload 1 power plants capable of generating electricity at costs competitive with fossil-fired generators. The Department subsequently...

351

2012 NEUP R&D Workscopes | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

range of customers and energy-intensive applications, including base-load electricity for remote communities or dedicated facilities, dispatchable electricity to stabilize local...

352

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

61 - 5170 of 8,172 results. 61 - 5170 of 8,172 results. Download CX-009024: Categorical Exclusion Determination Advanced Low Cost Receivers for Solar Parabolic Trough CX(s) Applied: B3.6, B5.17 Date: 08/09/2012 Location(s): Vermont Offices(s): Golden Field Office http://energy.gov/nepa/downloads/cx-009024-categorical-exclusion-determination Download CX-009034: Categorical Exclusion Determination Accelerated Development of Zr-containing New Generation FM Steels for Advanced Nuclear Reactors - Oak Ridge National Laboratory CX(s) Applied: B3.6, B3.10 Date: 08/09/2011 Location(s): Tennessee Offices(s): Nuclear Energy http://energy.gov/nepa/downloads/cx-009034-categorical-exclusion-determination Download CX-009035: Categorical Exclusion Determination Nanostructured Fe-Cr Alloys for Advanced Nuclear Energy Applications -

353

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

21 - 22530 of 28,905 results. 21 - 22530 of 28,905 results. Download CX-001714: Categorical Exclusion Determination Vehicle Test Location at Bone Yard; National Renewable Energy Laboratory (NREL) Tracking Number 09-024 CX(s) Applied: B3.6, A9 Date: 04/19/2010 Location(s): Golden, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-001714-categorical-exclusion-determination Download CX-001598: Categorical Exclusion Determination Aerial Photography of Solar Parabolic Trough Field at Cameo, Colorado CX(s) Applied: B3.1, B3.6 Date: 04/08/2010 Location(s): Cameo, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-001598-categorical-exclusion-determination Download CX-001600: Categorical Exclusion Determination

354

NREL: Concentrating Solar Power Research - Collector R&D  

NLE Websites -- All DOE Office Websites (Extended Search)

Collector R&D Collector R&D Featured Resource Learn more about NREL's capabilities in collector/receiver characterization. Collector research at NREL focuses on developing and testing the next generation of concentrating solar power (CSP) collectors that reduce delivered electricity costs by 50%. NREL's work involves improved reflector development, optical model development, optical measurement techniques, testing standards, and reliability assessments. NREL also works to upgrade and adapt optical tools to enhance laboratory testing capabilities. CSP collectors capture the sun's energy with mirrors that reflect and focus the sunlight onto a receiver, creating the heat that is used to generate electricity. Opportunities and Potential Impact Collectors-whether for parabolic trough, power tower, or dish

355

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

21 - 11830 of 31,917 results. 21 - 11830 of 31,917 results. Download CX-001698: Categorical Exclusion Determination Recovery Act, County of Monterey, California Energy Efficiency and Conservation Block Grant CX(s) Applied: A9, A11, B5.1 Date: 04/16/2010 Location(s): Monterey County, California Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-001698-categorical-exclusion-determination Download CX-001598: Categorical Exclusion Determination Aerial Photography of Solar Parabolic Trough Field at Cameo, Colorado CX(s) Applied: B3.1, B3.6 Date: 04/08/2010 Location(s): Cameo, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-001598-categorical-exclusion-determination Download CX-001600: Categorical Exclusion Determination

356

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

11 - 2920 of 29,416 results. 11 - 2920 of 29,416 results. Download EIS-0285-SA-42: Supplement Analysis Transmission System Vegetation Management Program http://energy.gov/nepa/downloads/eis-0285-sa-42-supplement-analysis Download CX-005198: Categorical Exclusion Determination Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants CX(s) Applied: A9, B3.6 Date: 02/16/2011 Location(s): Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-005198-categorical-exclusion-determination Download EA-1354: Final Environmental Assessment Fort Collins 115kV Transmission Line Upgrade Project http://energy.gov/nepa/downloads/ea-1354-final-environmental-assessment Download CX-002125: Categorical Exclusion Determination

357

CX-005199: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9: Categorical Exclusion Determination 9: Categorical Exclusion Determination CX-005199: Categorical Exclusion Determination Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants CX(s) Applied: A9, B3.6 Date: 02/16/2011 Location(s): Lakewood, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office Abengoa Solar Incorporated proposes to use federal funding for phase 2 of the continuation of National Environmental Policy Act (NEPA) award GFO-08-186. This NEPA determination is for site work that will take place at Abengoa's Lakewood, Colorado facility site (11500 West 13th Avenue). Since the original NEPA review, several tasks have been revised for Phase 2. Task 7 has been re-named: Molten-Salt Collector Analysis (dropped development), Task 8 has been replaced by: Process Development (new task,

358

Thermal Scout Pinpoints Hard-to-Find Problems in CSP Fields (Fact Sheet), Highlights in Research & Development, NREL (National Renewable Energy Laboratory)  

NLE Websites -- All DOE Office Websites (Extended Search)

receiver survey system uses an infrared camera, receiver survey system uses an infrared camera, GPS technology, and computer software to rapidly analyze concentrating solar power fields and locate defective receivers. In a parabolic trough concentrating solar power (CSP) system, collectors reflect the sun's rays onto long, tubular receivers that convert the sunlight into heat that is used to gener- ate electricity. The long-term performance of these receivers-designed to minimize heat loss to the environment while absorbing as much sunlight as possible-is critical for high efficiency and sustained performance. Traditionally, locating problems with receivers has been a costly, time-consuming, and labor- intensive effort, often requiring manual inspection of tens of thousands of receiver tubes. In most cases, operators must assess the entire output of a plant and roughly estimate the

359

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

01 - 2310 of 29,416 results. 01 - 2310 of 29,416 results. Download EIS-0246-SA-36: Supplement Analysis Wildlife Mitigation Program, Grant County, Oregon http://energy.gov/nepa/downloads/eis-0246-sa-36-supplement-analysis Download CX-001600: Categorical Exclusion Determination Aerial Photography of Solar Parabolic Trough Field at Abengoa Research Facilities, Lakewood, Colorado CX(s) Applied: B3.1, B3.6 Date: 04/08/2010 Location(s): Lakewood, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-001600-categorical-exclusion-determination Article DOE Prepares Programmatic Environmental Impact Statement for the Uranium Leasing Program DOE Prepares Programmatic Environmental Impact Statement for the Uranium Leasing Program. Tentatively, DOE is anticipating the Draft PEIS being

360

U.S. DEP.I\R.Th!ENT OF ENERGY EERE PROJECT MANAGEMENT CENTER  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

I\R.Th!ENT OF ENERGY I\R.Th!ENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NFPA DETERMINATION Page 1 of2 RECIPIENT:Norwich Technologies Inc. STATE: Vf PROJECT TITLE : Advanced Low Cost Receivers for Solar Parabolic Trough Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DE-FOA-0000595 DE-EE0005803 GF0-0005803-001 G05803 Based on my review oftbe information concerning tbe proposed action, as NEPA Compliance Officer (authorized under DOE Order 451.1A), I have made tbe following determination: CX, EA, EIS APPENDIX AND NUMBER: Description: 83.6 Small-scale research and development, laboratory operations, and pilot projects Siting, construction, modification. operation. and decommissioning of facilities for smallscale research

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

SunShot Initiative: Linear Fresnel  

NLE Websites -- All DOE Office Websites (Extended Search)

Linear Fresnel to someone by Linear Fresnel to someone by E-mail Share SunShot Initiative: Linear Fresnel on Facebook Tweet about SunShot Initiative: Linear Fresnel on Twitter Bookmark SunShot Initiative: Linear Fresnel on Google Bookmark SunShot Initiative: Linear Fresnel on Delicious Rank SunShot Initiative: Linear Fresnel on Digg Find More places to share SunShot Initiative: Linear Fresnel on AddThis.com... Concentrating Solar Power Systems Parabolic Trough Linear Fresnel Power Tower Dish Engine Components Competitive Awards Staff Photovoltaics Systems Integration Balance of Systems Linear Fresnel DOE funds solar research and development (R&D) in linear Fresnel systems as one of four CSP technologies aiming to meet the goals of the SunShot Initiative. Linear Fresnel systems, which are a type of linear

362

Drivers and Barriers in the Current Concentrated Solar Power (CSP) Market  

Open Energy Info (EERE)

Drivers and Barriers in the Current Concentrated Solar Power (CSP) Market Drivers and Barriers in the Current Concentrated Solar Power (CSP) Market (Webinar) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Drivers and Barriers in the Current Concentrated Solar Power (CSP) Market (Webinar) Focus Area: Solar Topics: Market Analysis Website: www.leonardo-energy.org/webinar-drivers-and-barriers-current-csp-marke Equivalent URI: cleanenergysolutions.org/content/drivers-and-barriers-current-concentr Language: English Policies: Regulations Regulations: Mandates/Targets This video teaches users about the four major types of concentrating solar power technologies (CSP): parabolic trough, tower concentrators, linear Fresnel lenses and dish engine systems. It also provides an overview of the trends in the market and research that should be performed in order to make

363

Department of Energy Finalizes Partial Guarantee for $852 Million Loan to  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Finalizes Partial Guarantee for $852 Million Finalizes Partial Guarantee for $852 Million Loan to Support California Concentrating Solar Power Plant Department of Energy Finalizes Partial Guarantee for $852 Million Loan to Support California Concentrating Solar Power Plant August 26, 2011 - 4:51pm Addthis Washington D.C. --- U.S. Energy Secretary Steven Chu today announced that the Department of Energy finalized a partial guarantee for an $852 million loan to support the development of the Genesis Solar Project. The Genesis Solar Project is a 250 megawatt (MW) parabolic trough concentrating solar power (CSP) facility that will increase the nation's currently installed CSP capacity by about 50 percent. NextEra Energy Resources, LLC, the project sponsor, estimates it will fund approximately 800 construction jobs

364

RECIPIENT:NREL U.S. DEPART1IENT OF ENERGY EERE PROJECT MANAGEMENT CENTER  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DEPART1IENT OF ENERGY DEPART1IENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DETERl\lINATION Page I of2 STATE: CO PROJECT TITLE: Aerial Photography of Solar Parabolic Trough Field at Abengoa Research Facilities. Lakewood, CO; NREL Tracking No. 09·025c Funding Opportunity Announc~mcnt Number Procurement Instrument Number NEPA Control Numbu CID Number NREl-09-025c G010337 Based on my review oftbe information concerning the proposed action, as NEPA Compliance Officer (authoriud under DOE Order 4SLIA), I have made the following determination: ex. EA, EIS APPENDIX AND NUMBER: Description: 83.1 Onsite and offsite site characterization and environmental monitoring, including siting, construction (or modification). operation, and dismantlement or closing (abandonment) of characterization and monitoring devices and siting,

365

NREL: Technology Transfer - NREL and SkyFuel Partnership Reflects Bright  

NLE Websites -- All DOE Office Websites (Extended Search)

NREL and SkyFuel Partnership Reflects Bright Future for Solar Energy NREL and SkyFuel Partnership Reflects Bright Future for Solar Energy In this video, NREL Principal Scientist Gary Jorgensen and SkyFuel Chief Technology Officer Randy Gee talk about their partnership to develop a thin film to substitute for bulkier glass mirrors on solar-collecting parabolic troughs. Get the Adobe Flash Player to see this video. Credit: Fireside Production More Information For more information about NREL's partnership with SkyFuel, read Award-Winning Reflector to Cut Solar Cost and New Solar Technology Concentrates on Cost, Efficiency. Learn more about NREL's Concentrating Solar Power Research. Printable Version Technology Transfer Home About Technology Transfer Technology Partnership Agreements Licensing Agreements Nondisclosure Agreements Research Facilities

366

NEPA DETERM1.I"{ REClPIENT:Abengoa Solar Inc STATE: CO PROJECT  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

OF::ENEROY OF::ENEROY 6flR:EPROJECT MANAGEMBNTCENTER NEPA DETERM1.I"{ REClPIENT:Abengoa Solar Inc STATE: CO PROJECT Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants TITLE: Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DE-FC36-08G018038 FC36-08G018038 GFO-G018038-001 G018038 Based on my review of the information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 451.1A), I have made the following determination: CX, EA, EIS APPENDIX AND NUMBER: Description: 63.6 Siting. construction (or modification). operation, and decommissioning of facilities for indoor bench-scale research projects and conventional laboratory operations (for example. preparation of chemical standards and sample analysis);

367

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

61 - 5170 of 31,917 results. 61 - 5170 of 31,917 results. Download CX-000919: Categorical Exclusion Determination Packwood Lake Hydroelectric Project CX(s) Applied: B5.1 Date: 02/25/2010 Location(s): Washington Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-000919-categorical-exclusion-determination Download CX-000902: Categorical Exclusion Determination Assessment of Energy Production Potential from Ocean Currents along the United States Coastline CX(s) Applied: A9 Date: 02/25/2010 Location(s): Georgia Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-000902-categorical-exclusion-determination Download CX-000922: Categorical Exclusion Determination Development of Next-Generation Parabolic Trough Collectors and Components

368

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

21 - 24130 of 28,560 results. 21 - 24130 of 28,560 results. Download CX-005196: Categorical Exclusion Determination Biomass to Liquid Fuels and Electric Power Research CX(s) Applied: A9, B3.6 Date: 02/16/2011 Location(s): Alabama Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-005196-categorical-exclusion-determination Download CX-005198: Categorical Exclusion Determination Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants CX(s) Applied: A9, B3.6 Date: 02/16/2011 Location(s): Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-005198-categorical-exclusion-determination Download CX-005202: Categorical Exclusion Determination

369

NREL: Concentrating Solar Power Research - Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

Projects Projects NREL's concentrating solar power (CSP) projects focus on components R&D and systems analysis related to power tower and parabolic trough technologies. We support the U.S. Department of Energy (DOE) in its CSP deployment efforts in the following areas: Collectors Receivers Power block Thermal energy storage Analysis. NREL received funding from DOE for concentrating solar power research projects. Through a competitive process, NREL was selected to lead the following projects: Novel Components to Overcome Existing Barriers-Particle Receiver Integrated with a Fluidized Bed Thermodynamic Cycle to Revolutionize CSP Systems-10-Megawatt Supercritical Carbon Dioxide (s-CO2) Turbine Test Nanomaterials for thermal energy storage in CSP plants In addition to these efforts, NREL is also a key partner on two other

370

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

81 - 5990 of 31,917 results. 81 - 5990 of 31,917 results. Download EA-1894: Final Environmental Assessment Albeni Falls Flexible Winter Lake Operations, Bonner, Idaho http://energy.gov/nepa/downloads/ea-1894-final-environmental-assessment Download Recommendations: Draft 2013 Annual Plan URTAC - Recommendations on Draft 2013 Section 999 Annual Plan http://energy.gov/fe/downloads/recommendations-draft-2013-annual-plan Download EA-1527: Final Environmental Assessment Corrective Measures Study Report for Remediating Contamination at Lawrence Berkeley National Laboratory Regulated under the Resource Conservation and Recovery Act http://energy.gov/nepa/downloads/ea-1527-final-environmental-assessment Download CX-009024: Categorical Exclusion Determination Advanced Low Cost Receivers for Solar Parabolic Trough

371

RECIPIENT:NREL u.s. DEPARII\I.ENI OF ENERGY EERE PROJECT MANAGEMENT CENTER  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

u.s. DEPARII\I.ENI OF ENERGY u.s. DEPARII\I.ENI OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DEIERlI-IINAIION Page 1 of2 STATE: CO PROJECT TITLE: Aerial Photography of Solar Parabolic Trough Field at Cameo. CO; NREL Tracking No. 09-02Sb Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number NERL-09-025b G010337 Based on my review of the information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 45I.lA), I have made the following determination: ex, EA, EIS APPENDIX AND NUMBER: Description: 83.1 Onsite and offsite site characterization and environmental monitoring, including siting, construction (or modification), operation, and dismantlement or closing (abandonment) of characterization and monitoring devices and siting,

372

DEPARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DETERMINATION  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

RECIPI[NT:Abengoa Solar Inc. RECIPI[NT:Abengoa Solar Inc. Page 1 of2 STATE: CO PROJECf TITLE: Development of Molten-Salt Heat TRansfer Fluid Technology for Parabolic Trough Solar Pow-er Plants Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DE-FC36-08GOl8038 GFO-GOl 8038-003 0 Based on my uview oftbe information concerning the proposed action, liS NEPA Compliance Officer (authorized under DOE Order 451.1A), I have made the following determination: ex, EA, EIS APPENDIX AND NUMBER: Description: A91nformation gathering, analysis, and dissemination InformatIOn gathering (including. but not limited to, literature surveys, inventories, site visits. and audits). data analysis (including, but not limited 10, oomputer modeling), document preparation (including, but not limited to, oonceptual design,

373

President Obama Announces $1.45 Billion Conditional Commitment Offer for  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1.45 Billion Conditional Commitment 1.45 Billion Conditional Commitment Offer for Abengoa Solar Inc. President Obama Announces $1.45 Billion Conditional Commitment Offer for Abengoa Solar Inc. July 3, 2010 - 12:00am Addthis Washington D.C. --- In his weekly video address, President Obama announced today the offer of a conditional commitment to Abengoa Solar Inc. for a $1.45 billion loan guarantee to finance the construction and start-up of a concentrating solar power generating facility. The Solana, Arizona plant will add 250 megawatts (MW) of capacity to the electrical grid using parabolic trough solar collectors and an innovative six-hour thermal energy storage system-the first of its kind in the country. "After years of watching companies build things and create jobs overseas, it's good news that we've attracted a company to our shores to build a

374

CX-001600: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

600: Categorical Exclusion Determination 600: Categorical Exclusion Determination CX-001600: Categorical Exclusion Determination Aerial Photography of Solar Parabolic Trough Field at Abengoa Research Facilities, Lakewood, Colorado CX(s) Applied: B3.1, B3.6 Date: 04/08/2010 Location(s): Lakewood, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office The original National Environmental Policy Act (NEPA) determination (DOE/EA-1440) applied to a balloon launch at STM or Joyce Street Facility. This NEPA review is for the same project description, but at an additional location, at the Abengoa Solar facility in Lakewood, Colorado. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-001600.pdf More Documents & Publications CX-001598: Categorical Exclusion Determination CX-001630: Categorical Exclusion Determination

375

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

21 - 12030 of 29,416 results. 21 - 12030 of 29,416 results. Download Federal Register http://energy.gov/management/downloads/federal-register Download CX-009024: Categorical Exclusion Determination Advanced Low Cost Receivers for Solar Parabolic Trough CX(s) Applied: B3.6, B5.17 Date: 08/09/2012 Location(s): Vermont Offices(s): Golden Field Office http://energy.gov/nepa/downloads/cx-009024-categorical-exclusion-determination Download TBU-0045- In the Matter of William Cor William Cor (the complainant or the employee), appeals the dismissal of his complaint of retaliation filed under 10 C.F.R. Part 708, the Department of Energy (DOE) Contractor Employee Protection... http://energy.gov/oha/downloads/tbu-0045-matter-william-cor Download Response to several FOIA requests- Renewable Energy.

376

SolarPaces International CSP Project Information | Open Energy Information  

Open Energy Info (EERE)

SolarPaces International CSP Project Information SolarPaces International CSP Project Information Jump to: navigation, search Tool Summary LAUNCH TOOL Name: SolarPaces International CSP Project Information Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Renewable Energy, Solar Topics: Implementation, Market analysis, Background analysis Resource Type: Dataset Website: www.nrel.gov/csp/solarpaces/ References: SolarPaces International CSP Project Information[1] Summary "Working with member countries, SolarPACES-Solar Power and Chemical Energy Systems-has compiled data on concentrating solar power (CSP) projects around the world that have plants that are either operational, under construction, or under development. CSP technologies include parabolic trough, linear Fresnel reflector, power tower, and dish/engine

377

Storing the Power of the Sun | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Storing the Power of the Sun Storing the Power of the Sun Storing the Power of the Sun December 22, 2010 - 11:47am Addthis Storing the Power of the Sun John Schueler John Schueler Former New Media Specialist, Office of Public Affairs Yesterday, Secretary Chu announced that a $1.45 billion loan guarantee has been finalized for Abengoa Solar Inc.'s Solana project, the first large-scale solar plant in the United States capable of storing energy it generates. This storage capacity allows Solana to bank energy that would normally go unused for times of peak demand, making Solar a more dependable source of energy. Located near Gila Bend, Arizona, the 250-megawatt (MW) project will be the world's largest parabolic trough concentrating solar plant, producing enough energy to serve 70,000 households and eliminate the emissions of

378

DOE Finalizes $1.45 Billion Loan Guarantee for One of the World's Largest  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Finalizes $1.45 Billion Loan Guarantee for One of the World's Finalizes $1.45 Billion Loan Guarantee for One of the World's Largest Solar Generation Plants DOE Finalizes $1.45 Billion Loan Guarantee for One of the World's Largest Solar Generation Plants December 21, 2010 - 12:00am Addthis Washington D.C. - U.S. Energy Secretary Steven Chu today announced a $1.45 billion loan guarantee has been finalized for Abengoa Solar Inc.'s Solana project, the world's largest parabolic trough concentrating solar plant. Located near Gila Bend, Arizona, the 250-megawatt (MW) project is the first large-scale solar plant in the United States capable of storing energy it generates. Solana will produce enough energy to serve 70,000 households and will avoid the emissions of 475,000 tons of carbon dioxide per year compared to a natural gas burning power plant.

379

Industrial Solar Technology Corp | Open Energy Information  

Open Energy Info (EERE)

Industrial Solar Technology Corp Industrial Solar Technology Corp Jump to: navigation, search Name Industrial Solar Technology Corp Place Golden, Colorado Zip CO 80403-1 Product IST designs, manufactures, installs and operates large scale parabolic trough collector systems. Coordinates 32.729747°, -95.562678° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.729747,"lon":-95.562678,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

380

Shimshon Energy Pvt Ltd | Open Energy Information  

Open Energy Info (EERE)

Shimshon Energy Pvt Ltd Shimshon Energy Pvt Ltd Jump to: navigation, search Name Shimshon Energy Pvt Ltd Place Pune, Maharashtra, India Zip 411006 Sector Solar Product Engineering company planning to set up a parabolic trough Solar Thermal Electricity Generation (STEG) gasification combined cycle power project. Coordinates 18.52671°, 73.8616° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":18.52671,"lon":73.8616,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Solargenix Energy LLC formerly Duke Solar | Open Energy Information  

Open Energy Info (EERE)

Energy LLC formerly Duke Solar Energy LLC formerly Duke Solar Jump to: navigation, search Name Solargenix Energy LLC (formerly Duke Solar) Place Raleigh, North Carolina Zip 27604 Sector Solar Product Manufactures and develops projects using a STEGS parabolic trough system, and also produces solar passive water heating systems. References Solargenix Energy LLC (formerly Duke Solar)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Solargenix Energy LLC (formerly Duke Solar) is a company located in Raleigh, North Carolina . References ↑ "Solargenix Energy LLC (formerly Duke Solar)" Retrieved from "http://en.openei.org/w/index.php?title=Solargenix_Energy_LLC_formerly_Duke_Solar&oldid=351379"

382

U.S. DEPARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NJ1PA DETERMINATION  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NJ1PA DETERMINATION NJ1PA DETERMINATION RECIPIENT:Abengoa Solar Inc. Page 1 of2 STATE: CO PROJECT TITLE: Reducing the Cost of Thermal Energy Storage for Parabolic Trough Power Plants Funding Opportunity Announcement Numbu Procurement Instrument Number NEPA Control Numbu ell) Number DE·PS36-08G098032 G018156 GFQ.G018156-003 G018156 Based on my review oflhe information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 451.1A),1 have made the following determination: ex, EA, EIS APPENDIX AND NUMBER: Description: A9 Information gathering (including, but nollimiled to, literature surveys. inventories. audits), data analysis (indudm9 computer modeling). document preparation (such as conceptual design or feasibility studies, analytical energy supply

383

NREL: Technology Transfer - Success Stories  

NLE Websites -- All DOE Office Websites (Extended Search)

Success Stories Success Stories We'd like to share our stories about innovation, industry partnerships, and the path towards commercializing renewable energy and energy efficiency technologies developed at NREL. Materials Exposure Testing Market Expands with Ultra-Accelerated Weathering System The Ultra-Accelerated Weathering System will change the weathering industry. A partnership with Atlas, one of the leader's in materials exposure testing, will take NREL's technology to industry. Watch the video. NREL and SkyFuel Partnership Reflects Bright Future for Solar Energy For the next generation of parabolic troughs, NREL Principal Scientist Gary Jorgensen and SkyFuel Chief Technology Officer Randy Gee have developed a lower-cost, more durable solution to glass mirrors. Watch the video.

384

Department of Energy Finalizes Partial Guarantee for $852 Million Loan to  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Department of Energy Finalizes Partial Guarantee for $852 Million Department of Energy Finalizes Partial Guarantee for $852 Million Loan to Support California Concentrating Solar Power Plant Department of Energy Finalizes Partial Guarantee for $852 Million Loan to Support California Concentrating Solar Power Plant August 26, 2011 - 4:51pm Addthis Washington D.C. --- U.S. Energy Secretary Steven Chu today announced that the Department of Energy finalized a partial guarantee for an $852 million loan to support the development of the Genesis Solar Project. The Genesis Solar Project is a 250 megawatt (MW) parabolic trough concentrating solar power (CSP) facility that will increase the nation's currently installed CSP capacity by about 50 percent. NextEra Energy Resources, LLC, the project sponsor, estimates it will fund approximately 800 construction jobs

385

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

51 - 4960 of 29,416 results. 51 - 4960 of 29,416 results. Download CX-009007: Categorical Exclusion Determination Northeast Provider of Solar Photovoltaic Instructor Training CX(s) Applied: A9, A11, B5.16 Date: 08/08/2012 Location(s): New York Offices(s): Golden Field Office http://energy.gov/nepa/downloads/cx-009007-categorical-exclusion-determination Download CX-009138: Categorical Exclusion Determination American Samoa Government State Energy Program· Annual Grant CX(s) Applied: A9, A11 Date: 09/06/2012 Location(s): American Samoa Offices(s): Golden Field Office http://energy.gov/nepa/downloads/cx-009138-categorical-exclusion-determination Download CX-007385: Categorical Exclusion Determination Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants

386

NREL: News - NREL Research Garners Three Prestigious R&D 100 Awards  

NLE Websites -- All DOE Office Websites (Extended Search)

Bookmark and Share Printable Version Bookmark and Share Printable Version News Release NR-1809 NREL Research Garners Three Prestigious R&D 100 Awards July 22, 2009 An ultra-accelerated weathering system, a parabolic trough solar concentrating collector, and a microbattery - all developed in partnership with the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) - were honored today as top 100 innovations for 2009 by R&D Magazine. The Ultra-Accelerated Weathering System (UAWS) is a multifaceted ultraviolet solar concentrator used to speed up the exposure of coatings, paints, and other materials to determine their durability and resistance to weathering. Industry applications include coatings used for solar panels while other uses for the UAWS include paints or finishes used on homes,

387

SunShot Initiative: Dish Engine  

NLE Websites -- All DOE Office Websites (Extended Search)

Dish Engine to someone by E-mail Dish Engine to someone by E-mail Share SunShot Initiative: Dish Engine on Facebook Tweet about SunShot Initiative: Dish Engine on Twitter Bookmark SunShot Initiative: Dish Engine on Google Bookmark SunShot Initiative: Dish Engine on Delicious Rank SunShot Initiative: Dish Engine on Digg Find More places to share SunShot Initiative: Dish Engine on AddThis.com... Concentrating Solar Power Systems Parabolic Trough Linear Fresnel Power Tower Dish Engine Components Competitive Awards Staff Photovoltaics Systems Integration Balance of Systems Dish Engine DOE funds solar research and development (R&D) in dish/engine systems as one of four concentrating solar power (CSP) technologies aiming to meet the goals of the SunShot Initiative. CSP dish engines, which provide high solar

388

SunShot Initiative: CSP Systems Research and Development  

NLE Websites -- All DOE Office Websites (Extended Search)

CSP Systems Research and CSP Systems Research and Development to someone by E-mail Share SunShot Initiative: CSP Systems Research and Development on Facebook Tweet about SunShot Initiative: CSP Systems Research and Development on Twitter Bookmark SunShot Initiative: CSP Systems Research and Development on Google Bookmark SunShot Initiative: CSP Systems Research and Development on Delicious Rank SunShot Initiative: CSP Systems Research and Development on Digg Find More places to share SunShot Initiative: CSP Systems Research and Development on AddThis.com... Concentrating Solar Power Systems Parabolic Trough Linear Fresnel Power Tower Dish Engine Components Competitive Awards Staff Photovoltaics Systems Integration Balance of Systems CSP Systems Research and Development The SunShot Initiative concentrating solar power (CSP) program funds

389

ThermalSoul | Open Energy Information  

Open Energy Info (EERE)

ThermalSoul ThermalSoul Jump to: navigation, search Name ThermalSoul Place Austin, Texas Zip 78746 Sector Solar Product Austin, Texas-based parabolic trough-based solar thermal electrical generation systems maker. Coordinates 30.267605°, -97.742984° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":30.267605,"lon":-97.742984,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

390

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

31 - 4640 of 31,917 results. 31 - 4640 of 31,917 results. Download CX-005198: Categorical Exclusion Determination Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants CX(s) Applied: A9, B3.6 Date: 02/16/2011 Location(s): Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office http://energy.gov/nepa/downloads/cx-005198-categorical-exclusion-determination Download EM Waste and Materials Disposition & Transportation DOE's Radioactive Waste Management Priorities: http://energy.gov/em/downloads/em-waste-and-materials-disposition-transportation Article DOE to Invest More than $5 Million for Concentrating Solar Power Additional $7.2 Million Available to Help National Labs Commercialize Proven Technologies http://energy.gov/articles/doe-invest-more-5-million-concentrating-solar-power

391

Measuring the Optical Performance of Evacuated Receivers via an Outdoor Thermal Transient Test: Preprint  

SciTech Connect

Modern parabolic trough solar collectors operated at high temperatures to provide the heat input to Rankine steam power cycles employ evacuated receiver tubes along the collector focal line. High performance is achieved via the use of a selective surface with a high absorptance for incoming short-wave solar radiation and a low emittance for outgoing long-wave infrared radiation, as well as the use of a hard vacuum to essentially eliminate convective and conductive heat losses. This paper describes a new method that determines receiver overall optical efficiency by exposing a fluid-filled, pre-cooled receiver to one sun outdoors and measuring the slope of the temperature curve at the point where the receiver temperature passes the glass envelope temperature (that is, the point at which there is no heat gain or loss from the absorber). This transient test method offers the potential advantages of simplicity, high accuracy, and the use of the actual solar spectrum.

Kutscher, C.; Burkholder, F.; Netter, J.

2011-08-01T23:59:59.000Z

392

Experimental study of integrated collector storage solar water heaters  

Science Journals Connector (OSTI)

Three Integrated Collector Storage Solar Water Heaters (ICSSWH) have been designed, constructed and experimentally studied in comparison to a Flat Plate Thermosiphonic Unit (FPTU). Each of the ICS experimental models consists of one cylindrical tank horizontally mounted in a stationary symmetrical Compound Parabolic Concentrating (CPC) reflector trough. The main objective is the design and construction of low cost solar water heaters with improved thermal performance and lower possible depths. The experimental models can be mounted on horizontal as well as on inclined roofs by adopting the lowest possible depth. The results show that these solar devices perform more than effectively all year long. This could contribute significantly on the development of ICS type solar water heaters.

M. Souliotis; D. Chemisana; Y.G. Caouris; Y. Tripanagnostopoulos

2013-01-01T23:59:59.000Z

393

A Systematic Comparison on Power Block Efficiencies for CSP Plants with Direct Steam Generation  

Science Journals Connector (OSTI)

Abstract The increase of the process temperature of concentrating solar power plants above the degradation temperature of thermal oil (400 °C) opens the way for increased power block efficiency and thus reduced cost of electricity production. Direct solar steam generation is one technical option to follow this path. The paper presents different power block designs for direct steam generation parabolic trough and linear Fresnel power plants. Based on a systematic modelling approach, results for efficiency gains are derived and compared against a reference case of an oil-based plant. The results show that different reheat configurations are feasible and that efficiency gains in the range from 4 to 6% can be expected based on todays or near future solar collector technology.

T. Hirsch; A. Khenissi

2014-01-01T23:59:59.000Z

394

Solar steam reforming of natural gas integrated with a gas turbine power plant  

Science Journals Connector (OSTI)

Abstract This paper shows a hybrid power plant wherein solar steam reforming of natural gas and a steam injected gas turbine power plant are integrated for solar syngas production and use. The gas turbine is fed by a mixture of natural gas and solar syngas (mainly composed of hydrogen and water steam) from mid-low temperature steam reforming reaction whose heat duty is supplied by a parabolic trough Concentrating Solar Power plant. A comparison is made between a traditional steam injected gas turbine and the proposed solution to underline the improvements introduced by the integration with solar steam reforming of the natural gas process. The paper also shows how solar syngas can be considered as an energy vector consequent to solar energy conversion effectiveness and the natural gas pipeline as a storage unit, thus accomplishing the idea of a smart energy grid.

Augusto Bianchini; Marco Pellegrini; Cesare Saccani

2013-01-01T23:59:59.000Z

395

Switching moving boundary models for two-phase flow evaporators and condensers  

Science Journals Connector (OSTI)

Abstract The moving boundary method is an appealing approach for the design, testing and validation of advanced control schemes for evaporators and condensers. When it comes to advanced control strategies, not only accurate but fast dynamic models are required. Moving boundary models are fast low-order dynamic models, and they can describe the dynamic behavior with high accuracy. This paper presents a mathematical formulation based on physical principles for two-phase flow moving boundary evaporator and condenser models which support dynamic switching between all possible flow configurations. The models were implemented in a library using the equation-based object-oriented Modelica language. Several integrity tests in steady-state and transient predictions together with stability tests verified the models. Experimental data from a direct steam generation parabolic-trough solar thermal power plant is used to validate and compare the developed moving boundary models against finite volume models.

Javier Bonilla; Sebastián Dormido; François E. Cellier

2015-01-01T23:59:59.000Z

396

Self-pressurizing Stirling engine  

DOE Patents (OSTI)

A solar thermal powered aircraft powered by heat energy from the sun. A heat engine, such as a Stirling engine, is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller. The heat engine has a thermal battery in thermal contact with it so that heat is supplied from the thermal battery. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2010-10-12T23:59:59.000Z

397

Rankline-Brayton engine powered solar thermal aircraft  

DOE Patents (OSTI)

A solar thermal powered aircraft powered by heat energy from the sun. A Rankine-Brayton hybrid cycle heat engine is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller or other mechanism for enabling sustained free flight. The Rankine-Brayton engine has a thermal battery, preferably containing a lithium-hydride and lithium mixture, operably connected to it so that heat is supplied from the thermal battery to a working fluid. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2012-03-13T23:59:59.000Z

398

Rankine-Brayton engine powered solar thermal aircraft  

DOE Patents (OSTI)

A solar thermal powered aircraft powered by heat energy from the sun. A Rankine-Brayton hybrid cycle heat engine is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller or other mechanism for enabling sustained free flight. The Rankine-Brayton engine has a thermal battery, preferably containing a lithium-hydride and lithium mixture, operably connected to it so that heat is supplied from the thermal battery to a working fluid. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2009-12-29T23:59:59.000Z

399

Solar thermal aircraft  

DOE Patents (OSTI)

A solar thermal powered aircraft powered by heat energy from the sun. A heat engine, such as a Stirling engine, is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller. The heat engine has a thermal battery in thermal contact with it so that heat is supplied from the thermal battery. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2007-09-18T23:59:59.000Z

400

Chapter 10 - Solar Thermal Power Systems  

Science Journals Connector (OSTI)

Abstract Chapter 10 deals with solar thermal power systems. Initially, the general design considerations are given followed by the presentation of the three basic technologies. These include the parabolic trough collector system, which includes a description of the PTC power plant and outlook of the technology; the power tower systems and the dish systems. This is followed by the thermal analysis of the basic cycles of solar thermal power plants. Subsequently, solar updraft tower systems are examined, which include the initial steps and first demonstration, and the thermal analysis. Finally, solar ponds are examined, which is a form of large solar collector and storage system that can be used for solar power generation and include practical design considerations, salty water transmission estimation, methods of heat extraction, description of two large experimental solar ponds, and applications of solar ponds.

Soteris A. Kalogirou

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Utility-Scale Power Tower Solar Systems: Performance Acceptance Test Guidelines  

SciTech Connect

The purpose of these Guidelines is to provide direction for conducting performance acceptance testing for large power tower solar systems that can yield results of a high level of accuracy consistent with good engineering knowledge and practice. The recommendations have been developed under a National Renewable Energy Laboratory (NREL) subcontract and reviewed by stakeholders representing concerned organizations and interests throughout the concentrating solar power (CSP) community. An earlier NREL report provided similar guidelines for parabolic trough systems. These Guidelines recommend certain methods, instrumentation, equipment operating requirements, and calculation methods. When tests are run in accordance with these Guidelines, we expect that the test results will yield a valid indication of the actual performance of the tested equipment. But these are only recommendations--to be carefully considered by the contractual parties involved in the Acceptance Tests--and we expect that modifications may be required to fit the particular characteristics of a specific project.

Kearney, D.

2013-03-01T23:59:59.000Z

402

Categorical Exclusion Determinations: B3.1 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

April 8, 2010 April 8, 2010 CX-001640: Categorical Exclusion Determination Geophysical and Seismic Investigations at the Shoal, Nevada Site CX(s) Applied: B3.1 Date: 04/08/2010 Location(s): Shoal, Nevada Office(s): Legacy Management April 8, 2010 CX-001634: Categorical Exclusion Determination Meteorological Tower Installation Mille Lacs Band of Ojibwa Indian Reservation CX(s) Applied: B3.1, A9 Date: 04/08/2010 Location(s): County of Mille Lacs, Minnesota Office(s): Energy Efficiency and Renewable Energy, Golden Field Office April 8, 2010 CX-001600: Categorical Exclusion Determination Aerial Photography of Solar Parabolic Trough Field at Abengoa Research Facilities, Lakewood, Colorado CX(s) Applied: B3.1, B3.6 Date: 04/08/2010 Location(s): Lakewood, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office

403

CX-001598: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

98: Categorical Exclusion Determination 98: Categorical Exclusion Determination CX-001598: Categorical Exclusion Determination Aerial Photography of Solar Parabolic Trough Field at Cameo, Colorado CX(s) Applied: B3.1, B3.6 Date: 04/08/2010 Location(s): Cameo, Colorado Office(s): Energy Efficiency and Renewable Energy, Golden Field Office The original National Environmental Policy Act (NEPA) determination (DOE/EA-1440) applied to a balloon launch at STM or Joyce Street Facility. This NEPA review is for the same project description, but at an additional location, Xcel Cameo power plant at 39.149 degrees north, 108.318 degrees west, near Palisade, Colorado. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-001598.pdf More Documents & Publications CX-001600: Categorical Exclusion Determination CX-001630: Categorical Exclusion Determination

404

Categorical Exclusion Determinations: B3.6 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

13, 2012 13, 2012 CX-008951: Categorical Exclusion Determination Fundamental Understanding of Oxygen Reduction and Reaction Behavior and Developing High Performance... CX(s) Applied: B3.6 Date: 08/13/2012 Location(s): West Virginia Offices(s): National Energy Technology Laboratory August 9, 2012 CX-009024: Categorical Exclusion Determination Advanced Low Cost Receivers for Solar Parabolic Trough CX(s) Applied: B3.6, B5.17 Date: 08/09/2012 Location(s): Vermont Offices(s): Golden Field Office August 9, 2012 CX-009041: Categorical Exclusion Determination Pd-Rh Powder Production Project CX(s) Applied: B3.6 Date: 08/09/2012 Location(s): South Carolina Offices(s): Savannah River Operations Office August 9, 2012 CX-009039: Categorical Exclusion Determination SiC-SiC Composite for Fuel Structure Applications - Electric Power

405

Siting Utility-Scale Concentrating Solar Power Projects  

SciTech Connect

In 2002, Congress asked the U.S. Department of Energy to develop and scope out an initiative to fulfill the goal of having 1,000 megawatts (MW) of new parabolic trough, power tower, and dish engine solar capacity supplying the southwestern United States. In this paper, we present a review of the solar resource for Arizona, California, Nevada, and New Mexico. These four states have the greatest number of ''premium'' solar sites in the country and each has a renewable portfolio standard (RPS). We present information on the generation potential of the solar resources in these states. We also present regions within New Mexico that may be ideally suited for developing large-scale concentrating solar power (CSP) plants because of their proximity to load and their access to unconstrained transmission.

Mehos, M.; Owens, B.

2005-01-01T23:59:59.000Z

406

Phase-change thermal energy storage: Final subcontract report  

SciTech Connect

The research and development described in this document was conducted within the US Department of Energy's Solar Thermal Technology Program. The goal of this program is to advance the engineering and scientific understanding of solar thermal technology and to establish the technology base from which private industry can develop solar thermal power production options for introduction into the competitive energy market. Solar thermal technology concentrates the solar flux using tracking mirrors or lenses onto a receiver where the solar energy is absorbed as heat and converted into electricity or incorporated into products as process heat. The two primary solar thermal technologies, central receivers and distributed receivers, employ various point and line-focus optics to concentrate sunlight. Current central receiver systems use fields of heliostats (two-axes tracking mirrors) to focus the sun's radiant energy onto a single, tower-mounted receiver. Point focus concentrators up to 17 meters in diameter track the sun in two axes and use parabolic dish mirrors or Fresnel lenses to focus radiant energy onto a receiver. Troughs and bowls are line-focus tracking reflectors that concentrate sunlight onto receiver tubes along their focal lines. Concentrating collector modules can be used alone or in a multimodule system. The concentrated radiant energy absorbed by the solar thermal receiver is transported to the conversion process by a circulating working fluid. Receiver temperatures range from 100{degree}C in low-temperature troughs to over 1500{degree}C in dish and central receiver systems. 12 refs., 119 figs., 4 tabs.

Not Available

1989-11-01T23:59:59.000Z

407

Technical and economical system comparison of photovoltaic and concentrating solar thermal power systems depending on annual global irradiation  

Science Journals Connector (OSTI)

Concentrating solar thermal power and photovoltaics are two major technologies for converting sunlight to electricity. Variations of the annual solar irradiation depending on the site influence their annual efficiency, specific output and electricity generation cost. Detailed technical and economical analyses performed with computer simulations point out differences of solar thermal parabolic trough power plants, non-tracked and two-axis-tracked PV systems. Therefore, 61 sites in Europe and North Africa covering a global annual irradiation range from 923 to 2438 kW h/m2 a have been examined. Simulation results are usable irradiation by the systems, specific annual system output and levelled electricity cost. Cost assumptions are made for today's cost and expected cost in 10 years considering different progress ratios. This will lead to a cost reduction by 50% for PV systems and by 40% for solar thermal power plants. The simulation results show where are optimal regions for installing solar thermal trough and tracked PV systems in comparison to non-tracked PV. For low irradiation values the annual output of solar thermal systems is much lower than of PV systems. On the other hand, for high irradiations solar thermal systems provide the best-cost solution even when considering higher cost reduction factors for PV in the next decade. Electricity generation cost much below 10 Eurocents per kW h for solar thermal systems and about 12 Eurocents/kW h for PV can be expected in 10 years in North Africa.

Volker Quaschning

2004-01-01T23:59:59.000Z

408

Solar reforming of methane in a direct absorption catalytic reactor on a parabolic dish: 2, Modeling and analysis  

SciTech Connect

The CAtalytically Enhanced Solar Absorption Receiver (CAESAR) experiment was conducted to determine the thermal, chemical, and mechanical performance of a commercial-scale, dish-mounted, direct catalytic absorption receiver (DCAR) reactor over a range of steady state and transient (cloud) operating conditions. The focus of the experiment is on global performance such as receiver efficiencies and overall methane conversion; it was not intended to provide data for code validation. A numerical model was previously developed to provide guidance in the design of the absorber. The one-dimensional, planar and steady-state model incorporates, the following energy transfer mechanisms: solar and infrared radiation, heterogeneous chemical reaction, conduction in the solid phase, and convection between the fluid and solid phases. A number of upgrades to the model and improved property values are presented here. Model predictions are shown to bound the experimental axial thermocouple data when experimental uncertainties are included. Global predictions are made using a technique in which the incident solar flux distribution is subdivided into flux contour bands. Model predictions for each band are then spatially integrated to provide global predictions such as reactor efficiencies and methane conversions. Global predictions are shown to compare well with experimental data. Reactor predictions for anticipated operating conditions suggest a further decrease in optical density at the front of the absorber inner disk may be beneficial. The need to conduct code-validation experiments is identified as essential to improve the confidence in the capability to predict large-scale reactor operation.

Skocypec, R.D.; Hogan, R.E. Jr.; Muir, J.F.

1991-01-01T23:59:59.000Z

409

Two-sided estimates on Dirichlet heat kernels for time-dependent parabolic operators with singular drifts  

E-Print Network (OSTI)

, -domain in Rd , where d 1 and (0, 1]. Our operator is L + µ · x, where L is a time-dependent uniformly Foundation of Korea(NRF) funded by the Ministry of Education, Science and Technology(2011-0009685) 2Panki Kim is supported by Basic Science Research Program through the National Re- search Foundation of Korea(NRF) grant

Kim, Panki

410

342 .BULLETIN OF THE UNITED STATES FISH COMMISSION. up nom and a fern hatching-troughs with iSalnto levenensis ova in, but  

E-Print Network (OSTI)

of concrete and the mills built up with granite and Portland cement (threeof sand and one part cement the oars to push the vessels apart, and they have seines from 011e to another; with a sudden change of wind

411

Biogeography and Biodiversity in Sulfide Structures of Active and Inactive Vents at Deep-Sea Hydrothermal Fields of the Southern Mariana Trough  

Science Journals Connector (OSTI)

...with the manned research submersible Shinkai 6500 (JAMSTEC...ROPOS (Remotely Operated Platform for Ocean Science, Canadian Scientific Submersible Facility, Canada), and...biochemical indicators in semi-permafrost active layer...

Shingo Kato; Yoshinori Takano; Takeshi Kakegawa; Hironori Oba; Kazuhiko Inoue; Chiyori Kobayashi; Motoo Utsumi; Katsumi Marumo; Kensei Kobayashi; Yuki Ito; Jun-ichiro Ishibashi; Akihiko Yamagishi

2010-03-12T23:59:59.000Z

412

Biogeography and Biodiversity in Sulfide Structures of Active and Inactive Vents at Deep-Sea Hydrothermal Fields of the Southern Mariana Trough  

Science Journals Connector (OSTI)

...chemolithoautotrophic microbial biomass production. Geochim. Cosmochim. Acta 67: 3871-3887...and R. A. Berner. 1974. Methane production in the interstitial waters of sulfate-depleted...activity with biochemical indicators in semi-permafrost active layer sediments over...

Shingo Kato; Yoshinori Takano; Takeshi Kakegawa; Hironori Oba; Kazuhiko Inoue; Chiyori Kobayashi; Motoo Utsumi; Katsumi Marumo; Kensei Kobayashi; Yuki Ito; Jun-ichiro Ishibashi; Akihiko Yamagishi

2010-03-12T23:59:59.000Z

413

Results from Shallow Research Drilling at Inyo Domes, Long Valley Caldera, California and the Salton Sea Geothermal Field, Salton Trough, California  

Science Journals Connector (OSTI)

A goal of the thermal regimes sector of the U.S. Continental Scientific Drilling Program is to understand the intrusion of magma into the crust, the release of heat and volatiles from these intrusions, and the...

L. W. Younker; J. C. Eichelberger; P. W. Kasameyer…

1988-01-01T23:59:59.000Z

414

Biogeography and Biodiversity in Sulfide Structures of Active and Inactive Vents at Deep-Sea Hydrothermal Fields of the Southern Mariana Trough  

Science Journals Connector (OSTI)

...respectively. Cell abundance is higher in exterior parts of...bias resulting from the efficiency of DNA preparation from...structures may be relatively high in the interior parts...microbial community and venting chemistry in a sediment-hosted...and R. Amann. 1999. High bacterial diversity in...

Shingo Kato; Yoshinori Takano; Takeshi Kakegawa; Hironori Oba; Kazuhiko Inoue; Chiyori Kobayashi; Motoo Utsumi; Katsumi Marumo; Kensei Kobayashi; Yuki Ito; Jun-ichiro Ishibashi; Akihiko Yamagishi

2010-03-12T23:59:59.000Z

415

On How Hot Towers Fuel the Hadley Cell: An Observational and Modeling Study of Line-Organized Convection in the Equatorial Trough from TOGA COARE  

Science Journals Connector (OSTI)

An airflow trajectory analysis was carried out based on an idealized numerical simulation of the nocturnal 9 February 1993 equatorial oceanic squall line observed over the Tropical Ocean and Global Atmosphere Coupled Ocean–Atmosphere Response ...

Alexandre O. Fierro; Joanne Simpson; Margaret A. LeMone; Jerry M. Straka; Bradley F. Smull

2009-09-01T23:59:59.000Z

416

SunShot Initiative: Encapsulated Phase Change Material in Thermal Storage  

NLE Websites -- All DOE Office Websites (Extended Search)

Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants Terrafore logo Photo of gray balls grouped together. 10 to 15 millimeter capsules provide high heat transfer surface. Terrafore, under the Baseload CSP FOA, is developing novel encapsulated phase change materials (PCM) for use in thermal storage applications to significantly reduce the LCOE for baseload CSP plants. Approach Terrafore is determining a cost-effective way to produce small 10 mm to 15 mm capsules containing phase change material (PCM salt) in a suitable shell material. Large numbers of these PCM capsules provide high-heat transfer surface and store heat as sensible and latent heat of fusion of salt. The capsules with different PCMs inside the shell are stacked inside a single tank to provide a cascaded storage to effectively use the latent heat of fusion of salts over the solar collection temperature range.

417

Project Profile: Low-Cost Heliostat Development | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cost Heliostat Development Project Profile: Low-Cost Heliostat Development HiTek logo HiTek Services, under the Baseload CSP FOA, is conducting fundamental parametric analyses of...

418

Multiproject baselines for evaluation of electric power projects  

E-Print Network (OSTI)

Natural gas Fuel Type Capacity Annual generation EmissionsFuel Coal a Hydroelectric Capacity (MW) Type Baseload Load-Following Annual generation (Fuel/Project Natural gas Coal Wind Project Type Capacity Annual generation

2003-01-01T23:59:59.000Z

419

Project Profile: Advanced Nitrate Salt Central Receiver Power Plant  

Energy.gov (U.S. Department of Energy (DOE))

Abengoa, under the Baseload CSP FOA, will demonstrate a 100-megawatt electrical (MWe) central receiver plant using nitrate salt as the receiver coolant, thermal storage medium, and heat transport fluid in the steam generator.

420

Project Profile: High-Efficiency Thermal Storage System for Solar Plants  

Energy.gov (U.S. Department of Energy (DOE))

SENER, under the Baseload CSP FOA, aims to develop a highly efficient, low-maintenance and economical thermal energy storage (TES) system using solid graphite modular blocks for CSP plants.

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Revitalizing American Competitiveness in Solar Technologies  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

(kWh) MURI HOT Fluids CSP SunShot FOA ARPA-E Baseload FOA Thermal Storage In Germany, residential PV systems are sold at 2.44W RFI on the street that asks the...

422

CX-010503: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

Baseload Nitrate Salt Central Receiver Power Plant Design CX(s) Applied: A9, B3.6, B5.17 Date: 06/03/2013 Location(s): Colorado, Colorado Offices(s): Golden Field Office

423

CX-003712: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Categorical Exclusion Determination Brayton-Cycle Baseload Power Tower Concentrated Solar Power System CX(s) Applied: A9, B3.6 Date: 09092010 Location(s): Woburn,...

424

Polysulfide Flow Batteries Enabled by Percolating Nanoscale Conductor Networks Frank Y. Fan1  

E-Print Network (OSTI)

and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. 2 Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and solar suffer from intermittency, while existing baseload nuclear and fossil fuel generation plants

425

Managing Carbon Regulatory Risk in Utility Resource Planning: Current Practices in the Western United States  

E-Print Network (OSTI)

fired power generation without carbon capture and storage (CCS) and about $3/MWh to the cost of natural gas-power plants would apply to coal-fired baseload generation (not just natural gas-

Barbose, Galen

2009-01-01T23:59:59.000Z

426

Managing Carbon Regulatory Risk in Utility Resource Planning: Current Practices in the Western United States  

E-Print Network (OSTI)

fired power generation without carbon capture and storage (CCS) and about $3/MWh to the cost of natural gas-power plants would apply to coal-fired baseload generation (not just natural gas-

Barbose, Galen

2008-01-01T23:59:59.000Z

427

Conservation Screening Curves to Compare Efficiency Investments to Power Plants  

E-Print Network (OSTI)

yr) Combustion Turbine Combined- Cycle Oil Coal Steam A B oJ I J J J GAS TURBINE COMBINED-CYCLE (OIL) BASELOAD COAL I JB. Intermediate Combined-Cycle Oil This plant represents an

Koomey, J.G.

2008-01-01T23:59:59.000Z

428

The Themis program and the 2500-KW Themis solar power station at Targasonne  

SciTech Connect

Following the first oil crisis, the French Agency for Energy Conservation (A.E.E.) setup in 1975, devoted its time and efforts towards saving energy both in industry and in housing. This effort was expanded by our government in 1978, when the French solar energy authority, known as COMES, was created: it concentrated on R and D pertaining to new and renewable energy. Early this year, these two agencies were merged together to create the French Agency for the Management of Energy (FAME), which includes geothermal and heat distribution networks. This decision now gives the French government the tool to implement a very ambitious and diversified program, calling at the same time on energy conservation and on new and renewable energies development. An important part of the R and D program set up by FAME is the thermodynamic conversion program. On one side, the program devotes itself to the development of components and systems, among them the THEK program which deals with parabolic dishes. These could be used not only for heat generation purposes or electricity generation but also in stand alone systems, for example to refrigerate and conserve fish, a useful application in the developing countries. On the other side, the program calls for the implementation of pilot plants in order to experiment with these components and thermodynamic cycles. Such a pilot plant is nearing completion near Ajaccio in Corsica, and is due for operation early next year. Partial tests have already been run. It was a distributed collector parabolic trough array and a Rankine cycle turbine.

Drouot, L.P.; Hillairet, M.J.

1984-02-01T23:59:59.000Z

429

Abstract settings for stabilization of nonlinear parabolic system with a Riccati-based strategy. Application to Navier-Stokes and Boussinesq equations with Neumann or Dirichlet control  

E-Print Network (OSTI)

. Application to Navier-Stokes and Boussinesq equations with Neumann or Dirichlet control Mehdi Badra1 Abstract and the 2D or 3D Boussinesq equations with a Dirichlet control. Key words. Feedback stabilization, Riccati equation, Lyapunov function, Navier-Stokes, Boussinesq, Neumann con- trol, Dirichlet control. AMS subject

Boyer, Edmond

430

arXiv:0904.0927v1[math.AG]6Apr2009 CALCULATING THE PARABOLIC CHERN CHARACTER OF A  

E-Print Network (OSTI)

characters chP ar 1 (E), chP ar 2 (E) and chP ar 3 (E). The basic idea is to use the formula given in [IS2

Simpson, Carlos

431

Demonstration of a new ICPC design with a double-effect absorption chiller in an office building in Sacramento, California[Integrated Compound Parabolic Concentrator  

SciTech Connect

In 1998 two new technologies, a new ICPC solar collector and the solar operation of a double effect chiller, have been demonstrated for the first in an office building in Sacramento, California. This paper describes the demonstration project and reports on component and system performance.

Duff, W.S.; Winston, R.; O'Gallagher, J.J.; Henkel, T.; Muschaweck, J.; Christiansen, R.; Bergquam, J.

1999-07-01T23:59:59.000Z

432

2001-Luminy conference on Quasilinear Elliptic and Parabolic Equations and Systems, Electronic Journal of Differential Equations, Conference 08, 2002, pp 922.  

E-Print Network (OSTI)

to the first eigen- value of some quasilinear Schr¨odinger operators in semi-classical limits. We also provide://ejde.math.unt.edu ftp ejde.math.swt.edu (login: ftp) Semi-classical analysis and vanishing properties of solutions-medium, strong absorption, regularizing effects, semi-classical limits. c 2002 Southwest Texas State University

Belaud, Yves

433

Sandia National Laboratories: solar  

NLE Websites -- All DOE Office Websites (Extended Search)

testing of parabolic concentrators. When a parabolic concentrator (or any other solar collecting device) is equipped with an elevation tracker and mounted on the rotating...

434

AN EVALUATION OF SOLAR VALUATION METHODS USED IN UTILITY PLANNING AND PROCUREMENT PROCESSES  

E-Print Network (OSTI)

thermal storage or natural gas augmentation with CSP plants, one study considered PV coupled with a lead- acid battery,battery Trough Trough Trough Trough Power tower Solar chimney Natural gas firing in boiler N/A N/A PV Integrated thermal

Mills, Andrew D.

2014-01-01T23:59:59.000Z

435

SkyFuel | Open Energy Information  

Open Energy Info (EERE)

SkyFuel SkyFuel Jump to: navigation, search Logo: SkyFuel Name SkyFuel Address 18300 West Highway 72 Place Arvada, Colorado Zip 80007 Sector Solar Product Parabolic Trough Solar Collector Year founded 2007 Number of employees 11-50 Phone number 303.330.0276 Website http://www.skyfuel.com Coordinates 39.8630176°, -105.2064482° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.8630176,"lon":-105.2064482,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

436

Hydrodynamic analysis of direct steam generation solar collectors  

SciTech Connect

Direct steam generation collectors are considered with the aim to improve the performance of a parabolic trough collector leading to a reduction of operating costs of solar electric generation systems. In this study a hydrodynamic steady state model is developed and linked with a thermal model to optimize the performance of once-through direct steam generation solar collectors. The hydrodynamic model includes flow pattern classification and a pressure drop model. Flow pattern maps for typical DSG collectors with horizontal and inclined absorber tubes are generated to investigate the variation of flow conditions with radiation level, tube diameter, tube length and flow rate. Two-phase flow frictional pressure drop correlations for the range of operating conditions in a DSG collector are selected from the wide range of published correlations by comparison with experimental data for typical steam-water flow conditions in a DSG collector. Pressure drop is calculated for different operating conditions for both horizontal and inclined solar absorber tubes. Alternative operational strategies are evaluated to achieve optimum performance of a direct steam generation collector at different radiation levels.

Odeh, S.D.; Behnia, M.; Morrison, G.L.

2000-02-01T23:59:59.000Z

437

Conditions for economical benefits of the use of solar energy in multi-stage flash distillation  

Science Journals Connector (OSTI)

A solar assisted multi-stage flash (MSF) distillation system is economically compared with a conventional energy MSF plant. Moreover, the economical and climatic conditions that make competitive the use of solar energy in MSF plants vs. conventional energy are analyzed. The design arrangement of the solar distillation system considered consists of a solar parabolic trough collector field coupled to a conventional MSF plant. The solar field directly heats the brine until its top temperature. Therefore, the solar field acts as brine heater when solar energy is available. Nevertheless, the plant consumes conventional energy at nighttime. The parameters analyzed are the climatic conditions, which define the energy production and the average daily operation time of the solar field; the capacity and the performance ratio of the desalination plant; the cost of the solar collector, and the cost of conventional energy. It was concluded that the solarassisted distillation system described above could make possible the competitiveness of the use of solar energy in MSF distillation plants.

Lourdes García-Rodríguez; Carlos Gómez-Camacho

1999-01-01T23:59:59.000Z

438

Solar-Electric Dish Stirling System Development  

SciTech Connect

Electrical power generated with the heat from the sun, called solar thermal power, is produced with three types of concentrating solar systems - trough or line-focus systems; power towers in which a centrally-located thermal receiver is illuminated with a large field of sun-tracking heliostats; and dish/engine systems. A special case of the third type of system, a dish/Stirling system, is the subject of this paper. A dish/Stirling system comprises a parabolic dish concentrator, a thermal receiver, and a Stirling engine/generator located at the focus of the dish. Several different dish/Stirling systems have been built and operated during the past 15 years. One system claims the world record for net conversion of solar energy to electric power of 29.4%; and two different company`s systems have accumulated thousands of hours of on-sun operation. Due to de-regulation and intense competition in global energy markets as well as the immaturity of the technology, dish/Stirling systems have not yet found their way into the marketplace. This situation is changing as solar technologies become more mature and manufacturers identify high-value niche markets for their products. In this paper, I review the history of dish/Stirling system development with an emphasis on technical and other issues that directly impact the Stirling engine. I also try to provide some insight to the opportunities and barriers confronting the application of dish/Stirling in power generation markets.

Mancini, T.R.

1997-12-31T23:59:59.000Z

439

On characterization and measurement of average solar field mirror reflectance in utility-scale concentrating solar power plants  

Science Journals Connector (OSTI)

Abstract Due to the emerging need for the development of acceptance test codes for commercial concentrating solar power (CSP) plants, an effort is made here to develop a mirror reflectance model suitable for CSP applications as well as a general procedure to measure the average mirror reflectance of a solar field. Typically, a utility-scale solar field includes hundreds of thousands of mirror panels (if not more), and their reflectance is subject to many factors, such as weather and planned washing schedule. The newly developed mirror reflectance model can be used to characterize different types of mirror materials and can be directly used to perform optical performance evaluation of solar collectors. The newly proposed procedure for average solar field reflectance measurements includes a baseline comprehensive measurement and an individual factor measurement: the former allows a comprehensive survey of mirror reflectance across the whole solar field, and the latter can provide correcting factors for selected individual factors to further improve the accuracy of the baseline measurements. A detailed test case implementing the general procedure is applied to a state-of-the-art commercial parabolic trough plant and validates the proposed mirror reflectance model and average reflectance measurement procedure. In the test case, the plant-wide reflectance measurements at a commercial utility-scale solar plant were conducted and can shed light on relevant analysis of CSP applications. The work can also be naturally applied to other types of solar plants, such as power towers and linear Fresnel plants.

Guangdong Zhu; David Kearney; Mark Mehos

2014-01-01T23:59:59.000Z

440

Pilot demonstration of concentrated solar-powered desalination of subsurface agricultural drainage water and other brackish groundwater sources  

Science Journals Connector (OSTI)

Abstract The energy–water nexus is addressed with the experimental demonstration of a solar-powered desalination process system. This system was designed for high-recovery treatment of subsurface agricultural drainage water as a reuse strategy as well as other brackish groundwater sources. These water sources may exhibit wide fluctuations in salinity and makeup and pose a high risk for operational troubles due to high scaling potential. A first-of-its-kind open-cycle vapor-absorption heat pump is coupled with a multiple-effect distillation train and a large parabolic trough solar thermal concentrator. Without the heat pump, the distillation operation showed a minimum thermal energy consumption of 261.87 kWhth/m3. With the heat pump, the thermal energy consumption was reduced by more than 49% to 133.2 kWhth/m3. This reduction in thermal energy requirement directly translates into a 49% reduction in solar array area required to power a process with the same freshwater production rate as a system without an integrated heat pump. An optimized design was modeled and the thermal energy performance of a commercial system is projected at 34.9 kWhth/m3 using a 10-effect MED operating at 85% recovery.

Matthew D. Stuber; Christopher Sullivan; Spencer A. Kirk; Jennifer A. Farrand; Philip V. Schillaci; Brian D. Fojtasek; Aaron H. Mandell

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Solar Electric Generating System II finite element analysis  

SciTech Connect

On June 2, 1992, Landers` earthquake struck the Solar Electric Generating System II, located in Daggett, California. The 30 megawatt power station, operated by the Daggett Leasing Corporation (DLC), suffered substantial damage due to structural failures in the solar farm. These failures consisted of the separation of sliding joints supporting a distribution of parabolic glass mirrors. At separation, the mirrors fell to the ground and broke. It was the desire of the DLC and the Solar Thermal Design Assistance Center (STDAC) of Sandia National Laboratories (SNL) and to redesign these joints so that, in the event of future quakes, costly breakage will be avoided. To accomplish this task, drawings of collector components were developed by the STDAC, from which a detailed finite element computer model of a solar collector was produced. This nonlinear dynamic model, which consisted of over 8,560 degrees of freedom, underwent model reduction to form a low order nonlinear dynamic model containing only 40 degrees of freedom. This model was then used as a design tool to estimate joint dynamics. Using this design tool, joint configurations were modified, and an acceptable joint redesign determined. The results of this analysis showed that the implementation of metal stops welded to support shafts for the purpose of preventing joint separation is a suitable joint redesign. Moreover, it was found that, for quakes of Landers` magnitude, mirror breakage due to enhanced vibration in the trough assembly is unlikely.

Dohner, J.L.; Anderson, J.R.

1994-04-01T23:59:59.000Z

442

Solar thermal organic rankine cycle for micro-generation  

Science Journals Connector (OSTI)

The conceptual design of an Organic Rankine Cycle (ORC) driven by solar thermal energy is developed for the decentralized production of electricity of up to 50 kW. Conventional Rankine Cycle uses water as the working fluid whereas ORC uses organic compound as the working fluid and it is particularly suitable for low temperature applications. The ORC and the solar collector will be sized according to the solar flux distribution in the Republic of Yemen for the required power output of 50 kW. This will be a micro power generation system that consists of two cycles the solar thermal cycle that harness solar energy and the power cycle which is the ORC that generates electricity. As for the solar thermal cycle heat transfer fluid (HTF) circulates the cycle while absorbing thermal energy from the sun through a parabolic trough collector and then storing it in a thermal storage to increase system efficiency and maintains system operation during low radiation. The heat is then transferred to the organic fluid in the ORC via a heat exchanger. The organic fluids to be used and analyzed in the ORC are hydrocarbons R600a and R290.

2012-01-01T23:59:59.000Z

443

Life Cycle Assessment of Thermal Energy Storage: Two-Tank Indirect and Thermocline  

SciTech Connect

In the United States, concentrating solar power (CSP) is one of the most promising renewable energy (RE) technologies for reduction of electric sector greenhouse gas (GHG) emissions and for rapid capacity expansion. It is also one of the most price-competitive RE technologies, thanks in large measure to decades of field experience and consistent improvements in design. One of the key design features that makes CSP more attractive than many other RE technologies, like solar photovoltaics and wind, is the potential for including relatively low-cost and efficient thermal energy storage (TES), which can smooth the daily fluctuation of electricity production and extend its duration into the evening peak hours or longer. Because operational environmental burdens are typically small for RE technologies, life cycle assessment (LCA) is recognized as the most appropriate analytical approach for determining their environmental impacts of these technologies, including CSP. An LCA accounts for impacts from all stages in the development, operation, and decommissioning of a CSP plant, including such upstream stages as the extraction of raw materials used in system components, manufacturing of those components, and construction of the plant. The National Renewable Energy Laboratory (NREL) is undertaking an LCA of modern CSP plants, starting with those of parabolic trough design.

Heath, G.; Turchi, C.; Burkhardt, J.; Kutscher, C.; Decker, T.

2009-07-01T23:59:59.000Z

444

Performance analysis of Azimuth Tracking Fixed Mirror Solar Concentrator  

Science Journals Connector (OSTI)

Abstract The fixed mirror solar collector (FMSC) fixes reflector and mobiles receiver to collect solar energy. However, this type of concentrator has a low efficiency and short operating duration in practical applications. In this paper, we propose to install the FMSC on an azimuth tracking device (ATFMSC) and the reflectors are arranged by intermission to avoid the shading of neighbor reflector for incidence angle of less than 10° to improve its optical performance. Through the integration of the reflected solar radiation distribution function over any reflection point, and then the whole collector aperture, we develop the analytical expressions of various system efficiencies to numerically simulate the performance of ATFMSC with evacuated tube receiver in different design parameters. It is validated by the ray tracing results. The result shows that the mean annual net heat efficiency of the whole system would be up to 61% with the operating temperature of 400 °C, which is higher than parabolic trough collector and traditional FMSC. This is because the longitudinal incidence angle of ATFMSC always remains zero by tracking the sun azimuth, so the end loss of the concentrator can be avoided and enables it to operate with high efficiency continually.

Longlong Li; Huairui Li; Qian Xu; Weidong Huang

2015-01-01T23:59:59.000Z

445

Numerical-simulation and experimental-validation of the largest Egyptian solar process-heat system  

Science Journals Connector (OSTI)

El-Nasr pharmaceutical solar process heat project is considered as the largest industrial system installed and working in east Cairo Egypt 30°N. It was simply constructed from a one-axis tracking parabolic-trough collector that can produce about 1.3 ton/h saturated steam to feed the industrial processes in the company. Twenty-three bar compressed water is heated inside 1958.4 m2 collectors and later on it is flashed in a steam flash-drum to produce saturated steam at 8 bars and 175 °C that is fed to the process heat. A mathematical model was developed for the system components to simulate annual performance of the system. The simulation results were verified successfully by the measured data that are monitoring the system performance. First each component of the mathematical model was experimentally validated separately. Accordingly the whole mathematical model was validated under different weather conditions along the year. The validated numerical model was optimized. The optimal number of collectors connected in series was obtained as three collectors not 36 as installed. An economical study of the installed system was provided. The optimal design of the system was economically estimated. The optimal collector area is less than that installed it equals about 538 m2. Annual performance of the system is presented indicating the seasonal variation. It was found that the optimized system can produce about 2 ton/h in average. Moreover that value is more than that was proposed by the system design.

Adel M. Abdel-Dayem

2011-01-01T23:59:59.000Z

446

Final Technical Report  

SciTech Connect

This report summarizes the successful results of our SunShot project, Advanced Low-Cost Receivers for Parabolic Troughs. With a limited budget of $252K and in only 12 months, we have (1) developed validated optical and thermal models and completed rigorous optimization analysis to identify key performance characteristics as part of developing first-generation laboratory prototype designs, (2) built optical and thermal laboratory prototypes and test systems with associated innovative testing protocols, and (3) performed extensive statistically relevant testing. We have produced fully functioning optical and thermal prototypes and accurate, validated models shown to capture important underlying physical mechanisms. The test results from the first-generation prototype establish performance exceeding the FOA requirement of thermal efficiency >90% for a CSP receiver while delivering an exit fluid temperature of > 650 °C and a cost < $150/kWth. Our vacuum-free SunTrap receiver design provides improvements over conventional vacuum-tube collectors, allowing dramatic reductions in thermal losses at high operating temperature.

Stettenheim, Joel [Norwich Technologies] [Norwich Technologies; McBride, Troy O. [Norwich Technologies] [Norwich Technologies; Brambles, Oliver J. [Norwich Technologies] [Norwich Technologies; Cashin, Emil A. [Norwich Technologies] [Norwich Technologies

2013-12-31T23:59:59.000Z

447

Potential of Concentrating Solar Power in Canada  

Science Journals Connector (OSTI)

Abstract In this paper, results of an analysis to assess the potential of concentrating solar thermal power applications in Canada are presented. First, a direct normal solar resource (DNI) resource map for Canada is introduced. This map indicates the locations where the DNI is the highest in Canada and is derived from the most recent Perez's SUNY satellite-based solar resource model Version number 3. Second, the methodology and results of a GIS analysis to identify the locations of the most suitable lands for concentrating solar thermal power (CSP) applications in Canada are discussed. The total areas of the CSP-suitable lands are presented in a tabulated and a map formats for each of the Canadian provinces where there is a maximum DNI solar resource. Third and finally, results of a technical economical analysis for two CSP system designs are discussed. The two CSP systems considered include parabolic trough with synthetic oil heat transfer fluid with and without storage, molten salt power tower with and without storage.

R. Djebbar; D. Belanger; D. Boutin; E. Weterings; M. Poirier

2014-01-01T23:59:59.000Z

448

Impact of Hybrid Wet/Dry Cooling on Concentrating Solar Power Plant Performance  

SciTech Connect

This paper examines the sensitivity of Rankine cycle plant performance to dry cooling and hybrid (parallel) wet/dry cooling combinations with the traditional wet-cooled model as a baseline. Plants with a lower temperature thermal resource are more sensitive to fluctuations in cooling conditions, and so the lower temperature parabolic trough plant is analyzed to assess the maximum impact of alternative cooling configurations. While low water-use heat rejection designs are applicable to any technology that utilizes a Rankine steam cycle for power generation, they are of special interest to concentrating solar power (CSP) technologies that are located in arid regions with limited water availability. System performance is evaluated using hourly simulations over the course of a year at Daggett, CA. The scope of the analysis in this paper is limited to the power block and the heat rejection system, excluding the solar field and thermal storage. As such, water used in mirror washing, maintenance, etc., is not included. Thermal energy produced by the solar field is modeled using NREL's Solar Advisor Model (SAM).

Wagner, M. J.; Kutscher, C.

2010-01-01T23:59:59.000Z

449

Evolution of Frictional Behavior of Punchbowl Fault Gouges Sheared at Seismic Slip Rates and Mechanical and Hydraulic Properties of Nankai Trough Accretionary Prism Sediments Deformed at Different Loading Paths  

E-Print Network (OSTI)

Frictional measurements were made on natural fault gouge at seismic slip rates using a high-speed rotary-shear apparatus to study effects of slip velocity, acceleration, displacement, normal stress, and water content. Thermal-, mechanical...

Kitajima, Hiroko

2012-02-14T23:59:59.000Z

450

Temperature distribution of the upper surface of the subducted Philippine Sea Plate along the Nankai Trough, southwest Japan, from a three-dimensional subduction model: relation to large interplate and low-frequency earthquakes  

Science Journals Connector (OSTI)

......consistent with geothermal data that require very low frictional heating along the subduction...beneath the Kyushu district, Japan, Master...zone in the Kyushu district, 95-118, in...Sasada M., 2004. Geothermal gradient and heat......

Shoichi Yoshioka; Koji Murakami

2007-10-01T23:59:59.000Z

451

Definition: Base Load | Open Energy Information  

Open Energy Info (EERE)

Load Load Jump to: navigation, search Dictionary.png Base Load The minimum amount of electric power delivered or required over a given period at a constant rate.[1] View on Wikipedia Wikipedia Definition Baseload (also base load, or baseload demand) is the minimum amount of power that a utility or distribution company must make available to its customers, or the amount of power required to meet minimum demands based on reasonable expectations of customer requirements. Baseload values typically vary from hour to hour in most commercial and industrial areas. Related Terms electricity generation, power, smart grid References ↑ Glossary of Terms Used in Reliability Standards An in Like Like You like this.Sign Up to see what your friends like. line Glossary Definition Retrieved from

452

Slide 1  

U.S. Energy Information Administration (EIA) Indexed Site

Baseload Coal Baseload Coal Generation: Warts and All Prepared for: EIA 2008 Energy Conference: 30 Years of Energy Information and Analysis Washington DC April 8, 2008 Presentation by: Jamie Heller jamie@hellerworx.com 301-654-1980 2 Agenda l The US needs to add new baseload coal-fired generating capacity in order to meet load growth l Most proposed new coal-fired generating units are being delayed and many have been cancelled l What are the impediments to construction of new coal- fired generating units and how can they be addressed? There are two major impediments to construction of new coal-fired units and they will be tough but not impossible to address 3 Coal is Largest Future Generation Source 4 Coal-Fired Plants Delayed/Cancelled 5 Coal-Fired Plants Cancelled in 2007 l 17,000 MW (26 units) cancelled in 2007 according to JT

453

Update 6 to: A Dispersion Modeling Analysis of Downwash from Mirant's  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6 to: A Dispersion Modeling Analysis of Downwash from 6 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant Modeling Baseload Units 3,4,5 Update 6 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant Modeling Baseload Units 3,4,5 Docket No. EO-05-01: This report describes dispersion modeling performed for simultaneous operation of three baseload units at Mirant's Potomac River Generating Station (PRGS). The units (3,4,5) would operate at maximum load (107 MW) for up to 12 hours and minimum load (35 MW) 12 hours or more in a calendar day. This mode of operation is also referred to as Option B in Mirant Potomac River LLC's December 30, 2005 letter to the U.S. Department of Energy regarding District of Columbia Public Service Commission, Docket No. EO-05-01. The modeling was performed according to

454

Microsoft PowerPoint - Proceedings Cover Sheets  

NLE Websites -- All DOE Office Websites (Extended Search)

CCS Economic Analyses CCS Economic Analyses Comparing Coal IGCC with CCS and Wind-CAES Baseload Power Options in a Carbon-Constrained World May 8-11, 2006 * Hilton Alexandria Mark Center * Alexandria, Virginia Samir Succar, Jeffery B. Greenblatt, Robert H. Williams Princeton Environmental Institute, Princeton University Outline * Wind and Coal Comparison * Strategies for Baseload Wind * Dispatch Cost and Capacity Factor * Generation Costs of Coal and Wind Coal vs. Wind? Coal vs. Wind? Baseloading Wind * Backup:Natural Gas (SC/CC) - Low Capital Cost - Fast Ramping * Storage: CAES - Low Cost Bulk Storage - Potential for Widespread Availability Compressed Air Energy Storage (CAES) 1) Excess Power is Used To Compress Air 2) Air is Pumped Underground And Stored 3) When electricity is needed, stored air is utilized to run a gas-

455

Update 5 to: A Dispersion Modeling Analysis of Downwash from Mirant's  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5 to: A Dispersion Modeling Analysis of Downwash from 5 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant: Modeling Cycling Units 1, 2 plus One Baseload Unit Update 5 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant: Modeling Cycling Units 1, 2 plus One Baseload Unit Docket No. EO-05-01: This report describes dispersion modeling performed for simultaneous operation of one baseload unit and two cycling units at Mirant's Potomac River Generating Station (PRGS). This mode of operation is also referred to as Option A in Mirant Potomac River LLC's December 30, 2005 letter to the U.S. Department of Energy regarding District of Columbia Public Service Commission, Docket No. EO-05- 01. The modeling was performed according to the Protocol approved by the Virginia Department of

456

EPC Firms Expand Their Role  

E-Print Network (OSTI)

and were financed by the investor-owned electric utilities themselves. The bulk of U.S. base-load fossil, nuclear and hydro power plants were built by major firms such as Bechtel Power, Stone & Webster Enginnering Corp., Ebasco and others. Most... and were financed by the investor-owned electric utilities themselves. The bulk of U.S. base-load fossil, nuclear and hydro power plants were built by major firms such as Bechtel Power, Stone & Webster Enginnering Corp., Ebasco and others. Most...

Hernandez, L. A. Jr.

457

Dynamics and Stability of Rolling Viscoelastic Tires  

E-Print Network (OSTI)

plot is at a tread trough, and the third plot is midwayplot with a tread trough, and the middle plot is midwayand the middle plot is midway between. . . . . . . . . v

Potter, Trevor

2014-01-01T23:59:59.000Z

458

AN EVALUATION OF SOLAR VALUATION METHODS USED IN UTILITY PLANNING AND PROCUREMENT PROCESSES  

E-Print Network (OSTI)

LSE considered a solar chimney, and another LSE considered aTrough Trough Power tower Solar chimney Natural gas firingcredit for PV and a solar chimney. Capacity credit for APS

Mills, Andrew D.

2014-01-01T23:59:59.000Z

459

E-Print Network 3.0 - atomic force spectroscopy Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Langmuir trough Atomic force microscope Optical microscope... W ultrasonic horn Atomic absorption spectrophotometer UVVIS spectrophotometer Centrifuge p......

460

Con Edison: Endless Storm King Dispute Adds to Its Troubles  

Science Journals Connector (OSTI)

...elsewhere. * Concentrating 42 oil-fired base-load generating...the alarm. If high-sulfur oil or coal were generally used...expenditures for low-sulfur fuel oil imported from the Middle East...Circuit and thus began a legal marathon-the total legal expenses by...

Luther J. Carter

1974-06-28T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Preliminary Assumptions for Natural Gas Peaking  

E-Print Network (OSTI)

Preliminary Assumptions for Natural Gas Peaking Technologies Gillian Charles and Steve Simmons GRAC, Reciprocating Engines Next steps 2 #12;Definitions Baseload Energy: power generated (or conserved) across a period of time to serve system demands for electricity Peaking Capacity: capability of power generating

462

Project Profile: The Sacramento Municipal Utility District Consumnes Power Plant Solar Augmentation Project  

Energy.gov (U.S. Department of Energy (DOE))

The Sacramento Municipal Utility District (SMUD), under the Concentrating Solar Power (CSP) Heat Integration for Baseload Renewable Energy Development (HIBRED) program, is demonstrating a hybrid CSP solar energy system that takes advantage of an existing electrical generator for its power block and transmission interconnection.

463

RECOVERY ACT CASE STUDY CHP and district energy serve Texas A&M's 5,200-acre campus, which includes 750 buildings.  

E-Print Network (OSTI)

,000 pounds of steam per hour, and � Campus-wide electrical distribution system upgrades. The CHP system can operate as a baseload system to serve 75% of Texas A&M's peak power needs, 65% of total electrical energy&M's New Power Generation System," Energy Action Plan 2015, Utility & Energy Services, Texas A&M University

464

Advanced turbine systems program conceptual design and product development. Annual report, August 1994--July 1995  

SciTech Connect

Objective of the ATS program is to develop ultra-high efficiency, environmentally superior, and cost-competitive gas turbine systems for base-load application in utility, independent power producer, and industrial markets. This report discusses the major accomplishments achieved during the second year of the ATS Phase 2 program, particularly the design and test of critical components.

NONE

1994-10-01T23:59:59.000Z

465

The energy to fight injustice Published 23 July 2014 in Chemistry World  

E-Print Network (OSTI)

to use renewable energy for base-load electricity. As an example, the new US solar power plant, Ivanpah. And the benefits of cooperation will eventually come back to the US and other countries as cost effective powerThe energy to fight injustice Published 23 July 2014 in Chemistry World © Xinhua / Alamy As I peer

Hansen, James E.

466

Modeling integrated photovoltaic–electrochemical devices using steady-state equivalent circuits  

Science Journals Connector (OSTI)

...it describes both wired and wireless water splitting (Fig. 1B). Fig...particular if the PV-EC design is wireless, and the entire PV device is immersed...pathways to reach baseload electricity costs . Energy Environ Sci...192 . 27 Reece SY ( 2011 ) Wireless solar water splitting using...

Mark T. Winkler; Casandra R. Cox; Daniel G. Nocera; Tonio Buonassisi

2013-01-01T23:59:59.000Z

467

Ten-percent solar-to-fuel conversion with nonprecious materials  

Science Journals Connector (OSTI)

...can effectively be harnessed to electricity by fuel cell devices (3, 4) or converted...solar cell describes both wired and wireless water splitting and constrains the currents and...technology pathways to reach baseload electricity costs . Energy Environ Sci 5...

Casandra R. Cox; Jungwoo Z. Lee; Daniel G. Nocera; Tonio Buonassisi

2014-01-01T23:59:59.000Z

468

ANNUAL REPORT TO CONGRESS AND CITIZENS OF THE PACIFIC NORTHWEST  

E-Print Network (OSTI)

to serve as a comprehensive planning agency for energy policy and fish and wildlife policy in the Columbia River Basin, and to inform the public about energy and fish and wildlife issues and involve the public developing supply of wind power is integrated into the baseload power supply in a manner that does not erode

469

24 United States For better, for worse  

E-Print Network (OSTI)

generation. Coal, the cheapest fuel, currently produces America's baseload power: coal-fired plants run wants more support for nuclear power and fears the House bill will transfer wealth from the heartland of natural gas Drowning in it NEW YORK What bigger estimates of America's reserves could mean ROBERT HEFNER

Deng, Xunming

470

DIRECT USE OF NATURAL GAS: ANALYSIS AND POLICY OPTIONS  

E-Print Network (OSTI)

is competitive even as a base-load electricity generation resource, that is, to operate at high capacity factors-uses, such as space and water heating, than to burn natural gas to generate electricity to serve the end-use energy conversion." When considered for new applications it is called "fuel choice." In general, it is a question

471

Project Profile: Innovative Application of Maintenance-Free Phase-Change Thermal Energy Storage for Dish Systems  

Energy.gov (U.S. Department of Energy (DOE))

Infinia, under the Thermal Storage FOA, is developing a thermal energy storage (TES) system that, when combined with Infinia's dish-Stirling system, can achieve DOE's CSP cost goals of $0.07/kWh by 2015 for intermediate power and 5¢/kWh by 2020 for baseload power.

472

The Projected Impacts of Carbon Dioxide Emissions Reduction Legislation on  

E-Print Network (OSTI)

#12;The Projected Impacts of Carbon Dioxide Emissions Reduction Legislation on Electricity Prices on the projected prices of electricity and the use of electric energy in the state of Indiana. The analysis allowances and offsets, shifting production technology from coal-fired baseload resources to a combination

473

Facilitating the development and integration of low-carbon energy  

E-Print Network (OSTI)

(Papers 1­3) and development of new energy technologies (Paper 4) in service of this goal. Compressed air energy storage (CAES) could be paired with a wind farm to provide firm, dispatchable baseload powerFacilitating the development and integration of low-carbon energy technologies Submitted in partial

474

Aquantis Ocean Current Turbine Development Project Report  

SciTech Connect

The Aquantis® Current Plane (“C-Plane”) technology developed by Dehlsen Associates, LLC (DA) and Aquantis, Inc. is an ocean current turbine designed to extract kinetic energy from ocean currents. The technology is capable of achieving competitively priced base-load, continuous, and reliable power generation from a source of renewable energy not before possible in this scale or form.

Fleming, Alex J.

2014-08-23T23:59:59.000Z

475

Solar production of intermediate temperature process heat. Phase I design. Final report. [For sugarcane processing plant in Hawaii  

SciTech Connect

This report is the final effort in the Phase I design of a solar industrial process heat system for the Hilo Coast Processing Company (HCPC) in Pepeekeo, Hawaii. The facility is used to wash, grind and extract sugar from the locally grown sugarcane and it operates 24 hours a day, 305 days per year. The major steam requirements in the industrial process are for the prime movers (mill turbines) in the milling process and heat for evaporating water from the extracted juices. Bagasse (the fibrous residue of milled sugarcane) supplied 84% of the fuel requirement for steam generation in 1979, while 65,000 barrels of No. 6 industrial fuel oil made up the remaining 16%. These fuels are burned in the power plant complex which produces 825/sup 0/F, 1,250 psi superheated steam to power a turbogenerator set which, in addition to serving the factory, generates from 7 to 16 megawatts of electricity that is exported to the local utility company. Extracted steam from the turbo-generator set supplies the plant's process steam needs. The system consists of 42,420 ft./sup 2/ of parabolic trough, single axis tracking, concentrating solar collectors. The collectors will be oriented in a North-South configuration and will track East-West. A heat transfer fluid (Gulf Synfluid 4cs) will be circulated in a closed loop fashion through the solar collectors and a series of heat exchangers. The inlet and outlet fluid temperatures for the collectors are 370/sup 0/F and 450/sup 0/F respectively. It is estimated that the net useable energy delivered to the industrial process will be 7.2 x 10/sup 9/ Btu's per year. With an HCPC boiler efficiency of 78% and 6.2 x 10/sup 6/ Btu's per barrel of oil, the solar energy system will displace 1489 barrels of oil per year. (WHK)

None

1980-08-01T23:59:59.000Z

476

Numerical study of heat loss from a non-evacuated receiver of a solar collector  

Science Journals Connector (OSTI)

Abstract Heat loss from receivers of solar collectors is a major reason for drop in their efficiency. Receiver pipes enclosed in glass tubes with evacuated annulus show considerable reduction in heat losses. However, manufacturing and maintenance costs for such receivers are high. An inexpensive alternative is a similar receiver with non-evacuated annulus. This paper presents a numerical study of heat loss from a non-evacuated receiver typically used in parabolic trough collectors, generating moderate temperatures and designed particularly for process heat applications. In order to come closer to the realistic situation, rather than assuming uniform temperature distribution on it, receiver pipe temperature has been assumed to be varying along the surface. Sinusoidal and square wave functions are employed in modeling, since actual temperature distributions on solar receiver pipes are combinations of these two functions. Main goal of the paper is to optimize the design of the non-evacuated solar receiver for minimum heat loss, by using CFD technique. Also effects on heat loss from receivers due to different parameters like average temperature (Ta) of the pipe, non-uniformity in the temperature (?) along its surface, hour angle (?), denoting position of the sun in the sky and radius ratio (RR) of radius of receiver pipe to that of outer glass tube have been studied. It is seen that as non-uniformity in temperature distribution increases in both types of temperature distribution, heat losses from receiver pipes decrease up to 10%. Also as hour angle increases from 0° to 90°, heat loss decreases by 20% in case of sinusoidal temperature distribution and 24% in case of square wave temperature distribution. The effect of radius ratio (RR) on heat loss has been studied. In present study, we found out that 1.375 is critical radius ratio for which heat losses from receiver are minimum

Ramchandra G. Patil; Dhanaji M. Kale; Sudhir V. Panse; Jyeshtharaj B. Joshi

2014-01-01T23:59:59.000Z

477

An assessment of solar-powered organic Rankine cycle systems for combined heating and power in UK domestic applications  

Science Journals Connector (OSTI)

Abstract Performance calculations are presented for a small-scale combined solar heat and power (CSHP) system based on an Organic Rankine Cycle (ORC), in order to investigate the potential of this technology for the combined provision of heating and power for domestic use in the UK. The system consists of a solar collector array of total area equivalent to that available on the roof of a typical UK home, an ORC engine featuring a generalised positive-displacement expander and a water-cooled condenser, and a hot water storage cylinder. Preheated water from the condenser is sent to the domestic hot water cylinder, which can also receive an indirect heating contribution from the solar collector. Annual simulations of the system are performed. The electrical power output from concentrating parabolic-trough (PTC) and non-concentrating evacuated-tube (ETC) collectors of the same total array area are compared. A parametric analysis and a life-cycle cost analysis are also performed, and the annual performance of the system is evaluated according to the total electrical power output and cost per unit generating capacity. A best-case average electrical power output of 89 W (total of 776 kW h/year) plus a hot water provision capacity equivalent to ?80% of the total demand are demonstrated, for a whole system capital cost of £2700–£3900. Tracking \\{PTCs\\} are found to be very similar in performance to non-tracking \\{ETCs\\} with an average power output of 89 W (776 kW h/year) vs. 80 W (701 kW h/year).

James Freeman; Klaus Hellgardt; Christos N. Markides

2015-01-01T23:59:59.000Z

478

Optimization of non-evacuated receiver of solar collector having non-uniform temperature distribution for minimum heat loss  

Science Journals Connector (OSTI)

Abstract The present paper contains a numerical study of heat loss from a non-evacuated receiver typically used in parabolic trough collectors. To calculate temperature distributions on the receiver pipe (TP), an energy balance has been established over the entire cross-section of the receiver pipe at different fluid temperatures. In the energy balance, the flux distribution has been estimated by assuming normal incidence of solar insolation considering the sun as a point source. The temperature distributions of the receiver pipe are found, as per expectation, to be non-uniform. These temperature distributions have been fitted by sinusoidal and step functions and are used as temperature boundary conditions in a CFD study to optimize the size of the receiver. The mechanisms of heat loss that have been considered in this study are heat loss from (1) pipe to glass tube by conduction, convection and radiation and (2) glass tube to surrounding by convection (natural and forced) and radiation. The values of diameters of receiver pipe taken in this study are 33 mm, 48 mm, 60 mm, 70 mm, 89 mm and 102 mm. The radius ratio (RR) varied from 1.2 to 3 by changing diameter of glass tube. It is observed that, the critical value of RR for minimum heat loss is dependent upon receiver pipe diameter (DPo). The critical values of RR for pipe diameter (DPo) 33 mm, 48 mm, 60 mm, 70 mm, 89 mm and 102 mm are 1.5, 1.4, 1.375, 1.35, 1.3 and 1.25 respectively. The value of critical RR is lower for higher values of pipe diameter. The value of critical RR for a particular diameter of receiver is independent of receiver temperature and external wind velocity. Comparison of heat losses in non-uniform and uniform temperature cases shows that the values of heat losses in the two cases differ only by 1.5%.

Ramchandra G. Patil; Sudhir V. Panse; Jyeshtharaj B. Joshi

2014-01-01T23:59:59.000Z

479

Historical development of concentrating solar power technologies to generate clean electricity efficiently – A review  

Science Journals Connector (OSTI)

Abstract The conventional ways for generating electricity around the world face two main problems, which are gradual increase in the earth?s average surface temperature (global warming) and depleting fossil fuel reserves. So switching to renewable energy technologies is an urgent need. Concentrating solar power (CSP) technologies are one of renewable technologies that are able to solve the present and future electricity problems. In this paper the historical evolution for the cornerstone plants of CSP technologies to generate clean electricity was reviewed and the current projects worldwide of CSP technologies were presented to show that the CSP technologies are technically and commercially proven and have the possibility for hybridization with fossil fuel or integration with storage systems to sustain continuous operation similar to conventional plants. Among all solar thermal technologies parabolic trough is the most technically and commercially proven. It also has the possibility for hybridization since it is proven by operating in several commercial projects for more than 28 years. It has a high maturity level and able to provide the required operating heat energy either as a stand-alone or in hybrid systems at the lowest cost and lower economic risks. For this reason, this technology is dominant in the operational and under-construction projects. However, currently there is a trend toward employing the other CSP technologies in the future projects as a result of the improvement in their performance. The use of PTC technology in the operational CSP projects is 95.7% and has decreased to 73.4% for the under-construction projects. Meanwhile, the uses of Fresnel collector (LFC), Tower power (TSP) and Stirling dish (SDC) technologies in the operational projects are 2.07%, 2.24%, and 0% respectively and have increased to 5.74%, 20.82% and 0.052% respectively for the under-construction projects. For the development projects, the use of TSP technology has reached to 71.43%, compared to 28.57% for PTC.

Dhyia Aidroos Baharoon; Hasimah Abdul Rahman; Wan Zaidi Wan Omar; Saeed Obaid Fadhl

2015-01-01T23:59:59.000Z

480

Utility-scale Power Tower Solar Systems: Performance Acceptance Test Guidelines  

Science Journals Connector (OSTI)

Abstract Prior to commercial operation, large solar systems in utility-size power plants need to pass performance acceptance tests conducted by the engineering, procurement, and construction (EPC) contractor or owners. In lieu of the present absence of ASME or other international test codes developed for this purpose, the NREL undertook the development of interim Guidelines to provide recommendations for test procedures that can yield results of a high level of accuracy consistent with good engineering knowledge and practice. The Guidelines contained here follow the general approach of the earlier NREL report on parabolic trough collector fields, but in this case are specifically written for power tower solar systems composed of a heliostat (reflector) field directing the sun's rays to a receiver (heat exchanger) on a high central tower. The working fluid in the tower receiver can be molten salt, water/steam, air, CO2, or other suitable fluids, each with its own particular attributes. The fundamental differences between acceptance of a solar power plant and a conventional fossil-fired plant are the inherently transient nature of the energy source and the necessity to use a performance projection model in the acceptance process. Two primary types of test runs are to be conducted. The first – the Short-Duration Steady-State Thermal Power Test (Power Test) – measures the thermal power output of the solar system under clear-sky conditions over a short period, during which thermal equilibrium and stable steady-state conditions exist, and compares the measured results to performance model projections for those conditions. The second test type – the Long-Duration Production (or Reliability) Test (Production Test)– is a continuous multi-day energy test that gathers multiple detailed daily thermal energy outputs and compares the results to projections from a performance model. Both clear-sky and partly cloudy conditions are acceptable. Additionally, the functionality of the solar system should be observed with regard to such items as daily startup, normal operation, standby and shutdown.

D. Kearney

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "baseload parabolic trough" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Thermal characterisation of an innovative quaternary molten nitrate mixture for energy storage in CSP plants  

Science Journals Connector (OSTI)

Abstract Enhancements to energy storage systems developed for solar thermoelectric technologies can yield considerable increases in efficiency for this type of renewable energy. Important improvements include the design of innovative storage fluids, such as molten salts possessing low melting points and high thermal stabilities. This research examines the design of an innovative quaternary molten nitrate mixture, with the goal of improving the solar salt used currently as an energy storage fluid in CSP plants. This quaternary salt, which contains different weight percentages of NaNO3, KNO3, LiNO3 and Ca(NO3)2, exhibits better physical and chemical properties than the binary solar salt (60% NaNO3+40% KNO3) currently used. The melting points, heat capacities and thermal stability of the quaternary mixtures were studied by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). In addition to DSC and TGA tests, viscosity and electrical conductivity measurements were carried out for the quaternary mixtures at different temperatures. The new salt was designed by taking into consideration the risk of solid species formation at high temperatures when calcium nitrate is present (which requires that the wt% does not exceed 20%) and the costs of LiNO3. These boundaries set the maximum wt% of LiNO3 to values below 15%. Finally it was determined that the proposed quaternary mixture, when used as a heat transfer fluid (HTF) in parabolic trough solar power plants, is able to expand plants? operating range to temperatures between 132 and 580 °C.

A.G. Fernández; S. Ushak; H. Galleguillos; F.J. Pérez

2015-01-01T23:59:59.000Z

482

Hybridizing concentrated solar power (CSP) with biogas and biomethane as an alternative to natural gas: Analysis of environmental performance using LCA  

Science Journals Connector (OSTI)

Abstract Concentrating Solar Power (CSP) plants typically incorporate one or various auxiliary boilers operating in parallel to the solar field to facilitate start up operations, provide system stability, avoid freezing of heat transfer fluid (HTF) and increase generation capacity. The environmental performance of these plants is highly influenced by the energy input and the type of auxiliary fuel, which in most cases is natural gas (NG). Replacing the NG with biogas or biomethane (BM) in commercial CSP installations is being considered as a means to produce electricity that is fully renewable and free from fossil inputs. Despite their renewable nature, the use of these biofuels also generates environmental impacts that need to be adequately identified and quantified. This paper investigates the environmental performance of a commercial wet-cooled parabolic trough 50 MWe CSP plant in Spain operating according to two strategies: solar-only, with minimum technically viable energy non-solar contribution; and hybrid operation, where 12% of the electricity derives from auxiliary fuels (as permitted by Spanish legislation). The analysis was based on standard Life Cycle Assessment (LCA) methodology (ISO 14040-14040). The technical viability and the environmental profile of operating the CSP plant with different auxiliary fuels was evaluated, including: NG; biogas from an adjacent plant; and BM withdrawn from the gas network. The effect of using different substrates (biowaste, sewage sludge, grass and a mix of biowaste with animal manure) for the production of the biofuels was also investigated. The results showed that NG is responsible for most of the environmental damage associated with the operation of the plant in hybrid mode. Replacing NG with biogas resulted in a significant improvement of the environmental performance of the installation, primarily due to reduced impact in the following categories: natural land transformation, depletion of fossil resources, and climate change. However, despite the renewable nature of the biofuels, other environmental categories like human toxicity, eutrophication, acidification and marine ecotoxicity scored higher when using biogas and BM.

G. San Miguel; B. Corona

2014-01-01T23:59:59.000Z

483

Deep Eutectic Salt Formulations Suitable as Advanced Heat Transfer Fluids  

SciTech Connect

Concentrating solar power (CSP) facilities are comprised of many miles of fluid-filled pipes arranged in large grids with reflective mirrors used to capture radiation from the sun. Solar radiation heats the fluid which is used to produce steam necessary to power large electricity generation turbines. Currently, organic, oil-based fluid in the pipes has a maximum temperature threshold of 400 °C, allowing for the production of electricity at approximately 15 cents per kilowatt hour. The DOE hopes to foster the development of an advanced heat transfer fluid that can operate within higher temperature ranges. The new heat transfer fluid, when used with other advanced technologies, could significantly decrease solar electricity cost. Lower costs would make solar thermal electricity competitive with gas and coal and would offer a clean, renewable source of energy. Molten salts exhibit many desirable heat transfer qualities within the range of the project objectives. Halotechnics developed advanced heat transfer fluids (HTFs) for application in solar thermal power generation. This project focused on complex mixtures of inorganic salts that exhibited a high thermal stability, a low melting point, and other favorable characteristics. A high-throughput combinatorial research and development program was conducted in order to achieve the project objective. Over 19,000 candidate formulations were screened. The workflow developed to screen various chemical systems to discover salt formulations led to mixtures suitable for use as HTFs in both parabolic trough and heliostat CSP plants. Furthermore, salt mixtures which will not interfere with fertilizer based nitrates were discovered. In addition for use in CSP, the discovered salt mixtures can be applied to electricity storage, heat treatment of alloys and other industrial processes.

Raade, Justin; Roark, Thomas; Vaughn, John; Bradshaw, Robert

2013-07-22T23:59:59.000Z

484

Molten Salt Test Loop (MSTL) system customer interface document.  

SciTech Connect

The National Solar Thermal Test Facility at Sandia National Laboratories has a unique test capability called the Molten Salt Test Loop (MSTL) system. MSTL is a test capability that allows customers and researchers to test components in flowing, molten nitrate salt. The components tested can range from materials samples, to individual components such as flex hoses, ball joints, and valves, up to full solar collecting systems such as central receiver panels, parabolic troughs, or linear Fresnel systems. MSTL provides realistic conditions similar to a portion of a concentrating solar power facility. The facility currently uses 60/40 nitrate %E2%80%9Csolar salt%E2%80%9D and can circulate the salt at pressure up to 40 bar (600psi), temperature to 585%C2%B0C, and flow rate of 44-50kg/s(400-600GPM) depending on temperature. The purpose of this document is to provide a basis for customers to evaluate the applicability to their testing needs, and to provide an outline of expectations for conducting testing on MSTL. The document can serve as the basis for testing agreements including Work for Others (WFO) and Cooperative Research and Development Agreements (CRADA). While this document provides the basis for these agreements and describes some of the requirements for testing using MSTL and on the site at Sandia, the document is not sufficient by itself as a test agreement. The document, however, does provide customers with a uniform set of information to begin the test planning process.

Gill, David Dennis; Kolb, William J.; Briggs, Ronald D.

2013-09-01T23:59:59.000Z

485

Spin-dependent Hall effect in a parabolic well with a quasi-three-dimensional electron gas G. M. Gusev, C. A. Duarte, A. A. Quivy, T. E. Lamas, and J. R. Leite*  

E-Print Network (OSTI)

dependent coefficient, and is the angle between the magnetic field and the normal to the well plane valve tran- sistor or other spintronic devices, however, the existence of such a spin-dependent property has not been studied yet in transport coefficients. Only the recently spin-related quantum Hall

Gusev, Guennady

486

Method and apparatus for measuring shear modulus and viscosity of a monomolecular film  

DOE Patents (OSTI)

Instrument for measuring the shear modulus of a monomolecular film comprises a circular trough having inwardly sloping sides containing a liquid for supporting the monolayer on the surface thereof; a circular rotor suspended above the trough such that the lower surface of the rotor contacts the surface of the liquid, positioned such that the axis of the rotor is concentric with the axis of the trough and freely rotable about its axis; apparatus for hydrostatically compressing the monolayer in the annular region formed between the rotor and the sides of the trough; and apparatus for rotating the trough about its axis. Preferably, hydrostatic compression of the monolayer is achieved by removing liquid from the bottom of the trough (decreasing the surface area) while raising the trough vertically along its axis to maintain the monolayer at a constant elevation (and maintain rotor contact). In order to measure viscosity, a apparatus for rotating the rotor about its axis is added to the apparatus.

Abraham, Bernard M. (Oak Park, IL); Miyano, Kenjiro (Sendai, JP); Ketterson, John B. (Evanston, IL)

1985-01-01T23:59:59.000Z

487

Method and apparatus for measuring shear modulus and viscosity of a monomolecular film  

DOE Patents (OSTI)

Apparatus for measuring the shear modulus of a monomolecular film comprises a circular trough having inwardly sloping sides containing a liquid for supporting the monolayer on the surface thereof; a circular rotor suspended above the trough such that the lower surface of the rotor contacts the surface of the liquid, positioned such that the axis of the rotor is concentric with the axis of the trough and freely rotable about its axis; means for hydrostatically compressing the monolayer in the annular region formed between the rotor and the sides of the trough; and means for rotating the trough about its axis. Preferably, hydrostatic compression of the monolayer is achieved by removing liquid from the bottom of the trough (decreasing the surface area) while raising the trough vertically along its axis to maintain the monolayer at a constant elevation (and maintain rotor contact). In order to measure viscosity, a means for rotating the rotor about its axis is added to the apparatus.

Abraham, B.M.; Miyano, K.; Ketterson, J.B.

1983-10-18T23:59:59.000Z

488

SunShot Initiative: Concentrating Solar Power Competitive Awards  

NLE Websites -- All DOE Office Websites (Extended Search)

Competitive Awards Competitive Awards Graphic showing five color blocks in a circular formation that represent the technical goals and cost targets for each component in the CSP system along with the associated competitive funding opportunity. Enlarge image DOE funds concentrating solar power (CSP) research and development (R&D) projects through competitive solicitations, which are released for public response as financial opportunity announcements. The following projects represent recent and ongoing research efforts: Concentrating Solar Power R&D (2007) Advanced Heat Transfer Fluids and Novel Thermal Storage Concepts for CSP (2008) CSP ARRA (2009) Baseload (2010) CSP SunShot R&D (2012) MURI HOT Fluids (2012) CSP Heat Integration for Baseload Renewable Energy Deployment (2013)

489

SunShot Initiative: Low-Cost Heliostat Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Low-Cost Heliostat Development to Low-Cost Heliostat Development to someone by E-mail Share SunShot Initiative: Low-Cost Heliostat Development on Facebook Tweet about SunShot Initiative: Low-Cost Heliostat Development on Twitter Bookmark SunShot Initiative: Low-Cost Heliostat Development on Google Bookmark SunShot Initiative: Low-Cost Heliostat Development on Delicious Rank SunShot Initiative: Low-Cost Heliostat Development on Digg Find More places to share SunShot Initiative: Low-Cost Heliostat Development on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment National Laboratory Research & Development

490

SunShot Initiative: Low-Cost Solar Thermal Collector  

NLE Websites -- All DOE Office Websites (Extended Search)

Low-Cost Solar Thermal Collector Low-Cost Solar Thermal Collector to someone by E-mail Share SunShot Initiative: Low-Cost Solar Thermal Collector on Facebook Tweet about SunShot Initiative: Low-Cost Solar Thermal Collector on Twitter Bookmark SunShot Initiative: Low-Cost Solar Thermal Collector on Google Bookmark SunShot Initiative: Low-Cost Solar Thermal Collector on Delicious Rank SunShot Initiative: Low-Cost Solar Thermal Collector on Digg Find More places to share SunShot Initiative: Low-Cost Solar Thermal Collector on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment National Laboratory Research & Development

491

Microsoft Word - Final Update 6 - UNits 345.DOC  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6 to: 6 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant Modeling Baseload Units 3,4,5 ENSR Corporation January 13, 2006 Document Number 10350-002-420 (Update 6) January, 2006 1-1 1.0 INTRODUCTION This report describes dispersion modeling performed for simultaneous operation of three baseload units at Mirant's Potomac River Generating Station (PRGS). The units (3,4,5) would operate at maximum load (107 MW) for up to 12 hours and minimum load (35 MW) 12 hours or more in a calendar day. This mode of operation is also referred to as Option B in Mirant Potomac River LLC's December 30, 2005 letter to the U.S. Department of Energy regarding District of Columbia Public Service Commission, Docket No. EO-05-01. The modeling was performed according to the Protocol

492

SunShot Initiative: Advanced Manufacture of Reflectors  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Manufacture of Advanced Manufacture of Reflectors to someone by E-mail Share SunShot Initiative: Advanced Manufacture of Reflectors on Facebook Tweet about SunShot Initiative: Advanced Manufacture of Reflectors on Twitter Bookmark SunShot Initiative: Advanced Manufacture of Reflectors on Google Bookmark SunShot Initiative: Advanced Manufacture of Reflectors on Delicious Rank SunShot Initiative: Advanced Manufacture of Reflectors on Digg Find More places to share SunShot Initiative: Advanced Manufacture of Reflectors on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

493

Microsoft Word - UPDATE 5 - Units 1,2 + base load unit.doc  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5 to: 5 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant Modeling Cycling Units 1, 2 plus One Baseload Unit ENSR Corporation January 6, 2006 Document Number 10350-002-420 (Update 5) January, 2006 1-1 1.0 INTRODUCTION This report describes dispersion modeling performed for simultaneous operation of one baseload unit and two cycling units at Mirant's Potomac River Generating Station (PRGS). This mode of operation is also referred to as Option A in Mirant Potomac River LLC's December 30, 2005 letter to the U.S. Department of Energy regarding District of Columbia Public Service Commission, Docket No. EO-05- 01. The modeling was performed according to the Protocol approved by the Virginia Department of

494

SunShot Initiative: Next-Generation Solar Collectors for CSP  

NLE Websites -- All DOE Office Websites (Extended Search)

Next-Generation Solar Collectors Next-Generation Solar Collectors for CSP to someone by E-mail Share SunShot Initiative: Next-Generation Solar Collectors for CSP on Facebook Tweet about SunShot Initiative: Next-Generation Solar Collectors for CSP on Twitter Bookmark SunShot Initiative: Next-Generation Solar Collectors for CSP on Google Bookmark SunShot Initiative: Next-Generation Solar Collectors for CSP on Delicious Rank SunShot Initiative: Next-Generation Solar Collectors for CSP on Digg Find More places to share SunShot Initiative: Next-Generation Solar Collectors for CSP on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

495

SunShot Initiative: High-Performance Nanostructured Coating  

NLE Websites -- All DOE Office Websites (Extended Search)

High-Performance Nanostructured High-Performance Nanostructured Coating to someone by E-mail Share SunShot Initiative: High-Performance Nanostructured Coating on Facebook Tweet about SunShot Initiative: High-Performance Nanostructured Coating on Twitter Bookmark SunShot Initiative: High-Performance Nanostructured Coating on Google Bookmark SunShot Initiative: High-Performance Nanostructured Coating on Delicious Rank SunShot Initiative: High-Performance Nanostructured Coating on Digg Find More places to share SunShot Initiative: High-Performance Nanostructured Coating on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

496

SunShot Initiative: Concentrated Solar Thermoelectric Power  

NLE Websites -- All DOE Office Websites (Extended Search)

Concentrated Solar Thermoelectric Concentrated Solar Thermoelectric Power to someone by E-mail Share SunShot Initiative: Concentrated Solar Thermoelectric Power on Facebook Tweet about SunShot Initiative: Concentrated Solar Thermoelectric Power on Twitter Bookmark SunShot Initiative: Concentrated Solar Thermoelectric Power on Google Bookmark SunShot Initiative: Concentrated Solar Thermoelectric Power on Delicious Rank SunShot Initiative: Concentrated Solar Thermoelectric Power on Digg Find More places to share SunShot Initiative: Concentrated Solar Thermoelectric Power on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

497

CX-000603: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3: Categorical Exclusion Determination 3: Categorical Exclusion Determination CX-000603: Categorical Exclusion Determination Baseload Energy Inc. Brasada-Harney 115-kilovolt Transmission Line Project CX(s) Applied: B4.6 Date: 02/04/2010 Location(s): Deschutes County, Oregon Office(s): Bonneville Power Administration The proposed project is a result of an interconnection request that was made by Baseload Energy, Inc., to interconnect onto the Federal Columbia River Transmission System. This interconnection request would accommodate a High Altitude Wind Generation Turbine that would generate up to 8 megawatts of harvested wind power. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-000603.pdf More Documents & Publications CX-010589: Categorical Exclusion Determination CX-005844: Categorical Exclusion Determination

498

SunShot Initiative: Scattering Solar Thermal Concentrators  

NLE Websites -- All DOE Office Websites (Extended Search)

Scattering Solar Thermal Scattering Solar Thermal Concentrators to someone by E-mail Share SunShot Initiative: Scattering Solar Thermal Concentrators on Facebook Tweet about SunShot Initiative: Scattering Solar Thermal Concentrators on Twitter Bookmark SunShot Initiative: Scattering Solar Thermal Concentrators on Google Bookmark SunShot Initiative: Scattering Solar Thermal Concentrators on Delicious Rank SunShot Initiative: Scattering Solar Thermal Concentrators on Digg Find More places to share SunShot Initiative: Scattering Solar Thermal Concentrators on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

499

SunShot Initiative: Flexible Assembly Solar Technology  

NLE Websites -- All DOE Office Websites (Extended Search)

Flexible Assembly Solar Flexible Assembly Solar Technology to someone by E-mail Share SunShot Initiative: Flexible Assembly Solar Technology on Facebook Tweet about SunShot Initiative: Flexible Assembly Solar Technology on Twitter Bookmark SunShot Initiative: Flexible Assembly Solar Technology on Google Bookmark SunShot Initiative: Flexible Assembly Solar Technology on Delicious Rank SunShot Initiative: Flexible Assembly Solar Technology on Digg Find More places to share SunShot Initiative: Flexible Assembly Solar Technology on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

500

CX-003706: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

06: Categorical Exclusion Determination 06: Categorical Exclusion Determination CX-003706: Categorical Exclusion Determination Development and Demonstration of an Innovative Thermal Energy Storage System for Baseload Solar Power Generation CX(s) Applied: A9, B3.6 Date: 09/09/2010 Location(s): Tampa, Florida Office(s): Energy Efficiency and Renewable Energy, Golden Field Office The University of South Florida would demonstrate the feasibility of a thermal energy storage system made from phase change materials to meet utility-scale base-load solar plant requirement economically. The location of the laboratory work would take place at the Clean Energy Research Center and Nanomaterials, and Nanomanufacturing Research Center laboratories at the USF in the Research Park (IDRB 121), and Engineering Building (ENG