National Library of Energy BETA

Sample records for ranch-highland operation converse

  1. Domestic Uranium Production Report

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Resources, Inc. dba Cameco Resources Smith Ranch-Highland Operation Converse, Wyoming ... Uranium is first processed at the Nichols Ranch plant and then transported to the Smith ...

  2. Domestic Uranium Production Report - Quarterly

    Gasoline and Diesel Fuel Update (EIA)

    Resources, Inc. dba Cameco Resources Smith Ranch-Highland Operation Converse, Wyoming ... Uranium is first processed at the Nichols Ranch plant and then transported to the Smith ...

  3. DOE Extends Contract to Operate Depleted Uranium Hexafluoride Conversion

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

    Plants | Department of Energy Extends Contract to Operate Depleted Uranium Hexafluoride Conversion Plants DOE Extends Contract to Operate Depleted Uranium Hexafluoride Conversion Plants December 24, 2015 - 11:06am Addthis LEXINGTON, Ky. (Dec. 24, 2015) - The U.S. Department of Energy's Office of Environmental Management (EM) today announced it is extending its contract for Operations of Depleted Uranium Hexafluoride (DUF6) Conversion Facilities at Paducah, Kentucky and Portsmouth, Ohio for a

  4. DOE Extends Contract to Operate Depleted Uranium Hexafluoride Conversion

    Office of Environmental Management (EM)

    Plants | Department of Energy Contract to Operate Depleted Uranium Hexafluoride Conversion Plants DOE Extends Contract to Operate Depleted Uranium Hexafluoride Conversion Plants December 24, 2015 - 10:00am Addthis Media Contact Brad Mitzelfelt, 859-219-4035 brad.mitzelfelt@lex.doe.gov LEXINGTON, Ky. - The U.S. Department of Energy's Office of Environmental Management (EM) today announced it is extending its contract for Operations of Depleted Uranium Hexafluoride (DUF6) Conversion Facilities

  5. CRAD, Training- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January 2005 assessment of the Training Program at the Y-12 - Enriched Uranium Operations Oxide Conversion Facility.

  6. CRAD, Management- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January 2005 assessment of Management program at the Y-12 - Enriched Uranium Operations Oxide Conversion Facility.

  7. CRAD, Conduct of Operations- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January, 2005 assessment of Conduct of Operations program at the Y-12 - Enriched Uranium Operations Oxide Conversion Facility.

  8. EIS-0329: Proposed Construction, Operation, Decontamination/Decommissioning of Depleted Uranium Hexafluoride Conversion Facilities

    Broader source: Energy.gov [DOE]

    This EIS analyzes DOE's proposal to construct, operate, maintain, and decontaminate and decommission two depleted uranium hexafluoride (DUF 6) conversion facilities, at Portsmouth, Ohio, and Paducah, Kentucky.

  9. CRAD, Safety Basis- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January 2005 assessment of the Safety Basis at the Y-12 - Enriched Uranium Operations Oxide Conversion Facility.

  10. CRAD, Occupational Safety & Health- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January 2005 assessment of Industrial Safety and Industrial Health programs at the Y-12 - Enriched Uranium Operations Oxide Conversion Facility.

  11. CRAD, Radiological Controls- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January 2005 assessment of the Radiation Protection Program at the Y-12 - Enriched Uranium Operations Oxide Conversion Facility.

  12. CRAD, DOE Oversight- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a DOE independent oversight assessment of the Y-12 Site Office's programs for oversight of its contractors at the Y-12 Enriched Uranium Operations Oxide Conversion Facility.

  13. CRAD, Emergency Management- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January 2005 assessment of Emergency Management program at the Y-12 Enriched Uranium Operations Oxide Conversion Facility.

  14. CRAD, Environmental Protection- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January 2005 assessment of Environmental Compliance program at the Y-12 - Enriched Uranium Operations Oxide Conversion Facility.

  15. Survey and conceptual flow sheets for coal conversion plant handling-preparation and ash/slag removal operations

    SciTech Connect (OSTI)

    Zapp, F.C.; Thomas, O.W.; Silverman, M.D.; Dyslin, D.A.; Holmes, J.M.

    1980-03-01

    This study was undertaken at the request of the Fossil Fuel Processing Division of the Department of Energy. The report includes a compilation of conceptual flow sheets, including major equipment lists, and the results of an availability survey of potential suppliers of equipment associated with the coal and ash/slag operations that will be required by future large coal conversion plant complexes. Conversion plant flow sheet operations and related equipment requirements were based on two representative bituminous coals - Pittsburgh and Kentucky No. 9 - and on nine coal conversion processes. It appears that almost all coal handling and preparation and ash/slag removal equipment covered by this survey, with the exception of some coal comminution equipment, either is on hand or can readily be fabricated to meet coal conversion plant capacity requirements of up to 50,000 short tons per day. Equipment capable of handling even larger capacities can be developed. This approach appears to be unjustified, however, because in many cases a reasonable or optimum number of trains of equipment must be considered when designing a conversion plant complex. The actual number of trains of equipment selected will be influenced by the total requied capacity of the complex, the minimum on-line capacity that can be tolerated in case of equipment failure, reliability of specific equipment types, and the number of reactors and related feed injection stations needed for the specific conversion process.

  16. DOE Issues Final Request for Proposal for the Operation of Depleted Uranium Hexafluoride (DUF6) Conversion Facilities

    Broader source: Energy.gov [DOE]

    Cincinnati -- The U.S. Department of Energy (DOE) today issued a Final Request for Proposal (RFP), for the Operation of Depleted Uranium Hexafluoride (DUF6) Conversion Facilities at Paducah, Kentucky and Portsmouth, Ohio. A cost-plus award fee and firm-fixed-price contract line item contract will be awarded from this Final RFP.

  17. Draft Environmental Impact Statement for Construction and Operation of a Depleted Uranium Hexafluoride Conversion Facility at the Portsmouth, Ohio, Site

    SciTech Connect (OSTI)

    N /A

    2003-11-28

    This document is a site-specific environmental impact statement (EIS) for construction and operation of a proposed depleted uranium hexafluoride (DUF{sub 6}) conversion facility at the U.S. Department of Energy (DOE) Portsmouth site in Ohio (Figure S-1). The proposed facility would convert the DUF{sub 6} stored at Portsmouth to a more stable chemical form suitable for use or disposal. The facility would also convert the DUF{sub 6} from the East Tennessee Technology Park (ETTP) site near Oak Ridge, Tennessee. In a Notice of Intent (NOI) published in the Federal Register on September 18, 2001 (Federal Register, Volume 66, page 48123 [66 FR 48123]), DOE announced its intention to prepare a single EIS for a proposal to construct, operate, maintain, and decontaminate and decommission two DUF{sub 6} conversion facilities at Portsmouth, Ohio, and Paducah, Kentucky, in accordance with the National Environmental Policy Act of 1969 (NEPA) (United States Code, Title 42, Section 4321 et seq. [42 USC 4321 et seq.]) and DOE's NEPA implementing procedures (Code of Federal Regulations, Title 10, Part 1021 [10 CFR Part 1021]). Subsequent to award of a contract to Uranium Disposition Services, LLC (hereafter referred to as UDS), Oak Ridge, Tennessee, on August 29, 2002, for design, construction, and operation of DUF{sub 6} conversion facilities at Portsmouth and Paducah, DOE reevaluated its approach to the NEPA process and decided to prepare separate site-specific EISs. This change was announced in a Federal Register Notice of Change in NEPA Compliance Approach published on April 28, 2003 (68 FR 22368); the Notice is included as Attachment B to Appendix C of this EIS. This EIS addresses the potential environmental impacts from the construction, operation, maintenance, and decontamination and decommissioning (D&D) of the proposed conversion facility at three alternative locations within the Portsmouth site; from the transportation of all ETTP cylinders (DUF{sub 6}, low-enriched UF6 [LEU-UF{sub 6}], and empty) to Portsmouth; from the transportation of depleted uranium conversion products to a disposal facility; and from the transportation, sale, use, or disposal of the fluoride-containing conversion products (hydrogen fluoride [HF] or calcium fluoride [CaF{sub 2}]). An option of shipping the ETTP cylinders to Paducah is also considered. In addition, this EIS evaluates a no action alternative, which assumes continued storage of DUF{sub 6} in cylinders at the Portsmouth and ETTP sites. A separate EIS (DOE/EIS-0359) evaluates potential environmental impacts for the proposed Paducah conversion facility.

  18. Draft Environmental Impact Statement for Construction and Operation of a Depleted Uranium Hexafluoride Conversion Facility at the Paducah, Kentucky, Site

    SciTech Connect (OSTI)

    N /A

    2003-11-28

    This document is a site-specific environmental impact statement (EIS) for construction and operation of a proposed depleted uranium hexafluoride (DUF{sub 6}) conversion facility at the U.S. Department of Energy (DOE) Paducah site in northwestern Kentucky (Figure S-1). The proposed facility would convert the DUF{sub 6} stored at Paducah to a more stable chemical form suitable for use or disposal. In a Notice of Intent (NOI) published in the ''Federal Register'' (FR) on September 18, 2001 (''Federal Register'', Volume 66, page 48123 [66 FR 48123]), DOE announced its intention to prepare a single EIS for a proposal to construct, operate, maintain, and decontaminate and decommission two DUF{sub 6} conversion facilities at Portsmouth, Ohio, and Paducah, Kentucky, in accordance with the National Environmental Policy Act of 1969 (NEPA) (''United States Code'', Title 42, Section 4321 et seq. [42 USC 4321 et seq.]) and DOE's NEPA implementing procedures (''Code of Federal Regulations'', Title 10, Part 1021 [10 CFR Part 1021]). Subsequent to award of a contract to Uranium Disposition Services, LLC (hereafter referred to as UDS), Oak Ridge, Tennessee, on August 29, 2002, for design, construction, and operation of DUF{sub 6} conversion facilities at Portsmouth and Paducah, DOE reevaluated its approach to the NEPA process and decided to prepare separate site-specific EISs. This change was announced in a ''Federal Register'' Notice of Change in NEPA Compliance Approach published on April 28, 2003 (68 FR 22368); the Notice is included as Attachment B to Appendix C of this EIS. This EIS addresses the potential environmental impacts from the construction, operation, maintenance, and decontamination and decommissioning (D&D) of the proposed conversion facility at three alternative locations within the Paducah site; from the transportation of depleted uranium conversion products to a disposal facility; and from the transportation, sale, use, or disposal of the fluoride-containing conversion products (hydrogen fluoride [HF] or calcium fluoride [CaF{sub 2}]). Although not part of the proposed action, an option of shipping all cylinders (DUF{sub 6}, low-enriched UF{sub 6} [LEU-UF{sub 6}], and empty) stored at the East Tennessee Technology Park (ETTP) near Oak Ridge, Tennessee, to Paducah rather than to Portsmouth is also considered. In addition, this EIS evaluates a no action alternative, which assumes continued storage of DUF{sub 6} in cylinders at the Paducah site. A separate EIS (DOE/EIS-0360) evaluates the potential environmental impacts for the proposed Portsmouth conversion facility.

  19. Identification of types of businesses with potential interest in operating and/or exporting ocean thermal energy conversion (OTEC) plants

    SciTech Connect (OSTI)

    Not Available

    1982-09-01

    This study describes the characteristics of three selected Ocean Thermal Energy Conversion (OTEC)-based lines of business, examines other lines of business and identifies those with similar characteristics, and indicates the types of businesses/corporations that could be expected to have potential interest in operating and/or exporting OTEC plants. An OTEC line of business model is developed to assist companies in making an internal corporate assessment as to whether OTEC should be in their business plan.

  20. Results of scoping tests for open-cycle OTEC (ocean thermal energy conversion) components operating with seawater

    SciTech Connect (OSTI)

    Zangrando, F; Bharathan, D; Green, H J; Link, H F; Parsons, B K; Parsons, J M; Pesaran, A A; Panchal, C B

    1990-09-01

    This report presents comprehensive documentation of the experimental research conducted on open-cycle ocean thermal energy conversion (OC-OTEC) components operating with seawater as a working fluid. The results of this research are presented in the context of previous analysis and fresh-water testing; they provide a basis for understanding and predicting with confidence the performance of all components of an OC-OTEC system except the turbine. Seawater tests have confirmed the results that were obtained in fresh-water tests and predicted by the analytical models of the components. A sound technical basis has been established for the design of larger systems in which net power will be produced for the first time from OC-OTEC technology. Design and operation of a complete OC-OTEC system that produces power will provide sufficient confidence to warrant complete transfer of OC-OTEC technology to the private sector. Each components performance is described in a separate chapter written by the principal investigator responsible for technical aspects of the specific tests. Chapters have been indexed separately for inclusion on the data base.

  1. Wetland assessment of the effects of construction and operation of a depleteduranium hexafluoride conversion facility at the Portsmouth, Ohio, site.

    SciTech Connect (OSTI)

    Van Lonkhuyzen, R.

    2005-09-09

    The U.S. Department of Energy (DOE) Depleted Uranium Hexafluoride (DUF{sub 6}) Management Program evaluated alternatives for managing its inventory of DUF{sub 6} and issued the ''Programmatic Environmental Impact Statement for Alternative Strategies for the Long-Term Management and Use of Depleted Uranium Hexafluoride'' (DUF{sub 6} PEIS) in April 1999 (DOE 1999). The DUF{sub 6} inventory is stored in cylinders at three DOE sites: Paducah, Kentucky; Portsmouth, Ohio; and East Tennessee Technology Park (ETTP), near Oak Ridge, Tennessee. In the Record of Decision for the DUF{sub 6} PEIS, DOE stated its decision to promptly convert the DUF{sub 6} inventory to a more stable chemical form. Subsequently, the U.S. Congress passed, and the President signed, the ''2002 Supplemental Appropriations Act for Further Recovery from and Response to Terrorist Attacks on the United States'' (Public Law No. 107-206). This law stipulated in part that, within 30 days of enactment, DOE must award a contract for the design, construction, and operation of a DUF{sub 6} conversion plant at the Department's Paducah, Kentucky, and Portsmouth, Ohio, sites, and for the shipment of DUF{sub 6} cylinders stored at ETTP to the Portsmouth site for conversion. This wetland assessment has been prepared by DOE, pursuant to Executive Order 11990 (''Protection of Wetlands'') and DOE regulations for implementing this Executive Order as set forth in Title 10, Part 1022, of the ''Code of Federal Regulations'' (10 CFR Part 1022 [Compliance with Floodplain and Wetland Environmental Review Requirements]), to evaluate potential impacts to wetlands from the construction and operation of a conversion facility at the DOE Portsmouth site. Approximately 0.02 acre (0.009 ha) of a 0.08-acre (0.03-ha) palustrine emergent wetland would likely be eliminated by direct placement of fill material during facility construction at Location A. Portions of this wetland that are not filled may be indirectly affected by an altered hydrologic regime because of the proximity of construction, possibly resulting in a decreased frequency or duration of inundation or soil saturation, and potential loss of hydrology necessary to sustain wetland conditions. Construction at Locations B or C would not result in direct impacts to wetlands. However, the hydrologic characteristics of nearby wetlands could be indirectly affected by adjacent construction. Executive Order 11990, ''Protection of Wetlands'', requires federal agencies to minimize the destruction, loss, or degradation of wetlands, and to preserve and enhance the natural and beneficial uses of wetlands. DOE regulations for implementing Executive Order 11990 are set forth in 10 CFR Part 1022. The impacts at Location A may potentially be avoided by an alternative routing of the entrance road, or mitigation may be developed in coordination with the appropriate regulatory agencies. Unavoidable impacts to wetlands that are within the jurisdiction of the USACE may require a CWA Section 404 Permit, which would trigger the requirement for a CWA Section 401 Water Quality Certification from the State of Ohio. Unavoidable impacts to isolated wetlands may require an Isolated Wetlands Permit from the Ohio Environmental Protection Agency. A mitigation plan may be required prior to the initiation of construction. Cumulative impacts to wetlands are anticipated to be negligible to minor for the proposed action, in conjunction with the effects of existing conditions and other activities. Habitat disturbance would involve settings commonly found in this part of Ohio, which in many cases involve previously disturbed habitats.

  2. Assessment of the Portsmouth/Paducah Project Office Conduct of Operations Oversight of the Depleted Uranium Hexafluoride Conversion Plants, May 2012

    Office of Environmental Management (EM)

    Assessment of the Portsmouth/Paducah Project Office Conduct of Operations Oversight of the Depleted Uranium Hexafluoride Conversion Plants May 2012 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy i Table of Contents 1.0 Purpose ................................................................................................................................................... 1 2.0 Background

  3. Users guide for the conversion of Navy paint-spray-booth particulate emission-control systems from wet to dry operation. Final report, January-September 1989

    SciTech Connect (OSTI)

    Ayer, J.; Tate, D.

    1990-03-01

    The report is a guide for converting U.S. Navy paint-spray-booth particulate emission control systems from wet to dry operation. The use of water curtains for air-pollution-control of paint-spray booths is considered a major source of water and solid-waste pollution from industrial painting operations. It is possible, however, to eliminate this water-pollution problem and significantly reduce the solid-waste load by converting the booth to utilize a dry-filter pollution-control system. The conversion, however, requires extensive planning prior to actual facility modification. The report describes requirements to facilitate the planning and preparation for conversion of typical spray booths. Although the report addresses modifications of Navy spray booths, the basic engineering requirements discussed apply also to other Department of Defense installations and to commercial industrial facilities.

  4. Lithium-Ion Ultracapacitors integrated with Wind Turbines Power Conversion Systems to Extend Operating Life and Improve Output Power Quality

    SciTech Connect (OSTI)

    Adel Nasiri

    2012-05-23

    In this project we designed and modeled a system for a full conversion wind turbine and built a scaled down model which utilizes Lithium-Ion Capacitors on the DC bus. One of the objectives is to reduce the mechanical stress on the gearbox and drivetrain of the wind turbine by adjusting the torque on generator side according to incoming wind power. Another objective is to provide short-term support for wind energy to be more ???¢????????grid friendly???¢??????? in order to ultimately increase wind energy penetration. These supports include power smoothing, power ramp rate limitation, low voltage ride through, and frequency (inertia) support. This research shows how energy storage in small scale and in an economical fashion can make a significant impact on performance of wind turbines. Gearbox and drivetrain premature failures are among high cost maintenance items for wind turbines. Since the capacitors are directly applied on the turbine DC bus and their integration does not require addition hardware, the cost of the additional system can be reasonable for the wind turbine manufacturers and utility companies.

  5. Floodplain/wetland assessment of the effects of construction and operation ofa depleted uranium hexafluoride conversion facility at the Paducah, Kentucky,site.

    SciTech Connect (OSTI)

    Van Lonkhuyzen, R.

    2005-09-09

    The U.S. Department of Energy (DOE) Depleted Uranium Hexafluoride (DUF{sub 6}) Management Program evaluated alternatives for managing its inventory of DUF{sub 6} and issued the ''Programmatic Environmental Impact Statement for Alternative Strategies for the Long-Term Management and Use of Depleted Uranium Hexafluoride'' (DUF{sub 6} PEIS) in April 1999 (DOE 1999). The DUF{sub 6} inventory is stored in cylinders at three DOE sites: Paducah, Kentucky; Portsmouth, Ohio; and East Tennessee Technology Park (ETTP), near Oak Ridge, Tennessee. In the Record of Decision for the DUF{sub 6} PEIS, DOE stated its decision to promptly convert the DUF{sub 6} inventory to a more stable chemical form. Subsequently, the U.S. Congress passed, and the President signed, the ''2002 Supplemental Appropriations Act for Further Recovery from and Response to Terrorist Attacks on the United States'' (Public Law No. 107-206). This law stipulated in part that, within 30 days of enactment, DOE must award a contract for the design, construction, and operation of a DUF{sub 6} conversion plant at the Department's Paducah, Kentucky, and Portsmouth, Ohio, sites, and for the shipment of DUF{sub 6} cylinders stored at ETTP to the Portsmouth site for conversion. This floodplain/wetland assessment has been prepared by DOE, pursuant to Executive Order 11988 (''Floodplain Management''), Executive Order 11990 (Protection of Wetlands), and DOE regulations for implementing these Executive Orders as set forth in Title 10, Part 1022, of the ''Code of Federal Regulations'' (10 CFR Part 1022 [''Compliance with Floodplain and Wetland Environmental Review Requirements'']), to evaluate potential impacts to floodplains and wetlands from the construction and operation of a conversion facility at the DOE Paducah site. Reconstruction of the bridge crossing Bayou Creek would occur within the Bayou Creek 100-year floodplain. Replacement of bridge components, including the bridge supports, however, would not be expected to result in measurable long-term changes to the floodplain. Approximately 0.16 acre (0.064 ha) of palustrine emergent wetlands would likely be eliminated by direct placement of fill material within Location A. Some wetlands that are not filled may be indirectly affected by an altered hydrologic regime, due to the proximity of construction, possibly resulting in a decreased frequency or duration of inundation or soil saturation and potential loss of hydrology necessary to sustain wetland conditions. Indirect impacts could be minimized by maintaining a buffer near adjacent wetlands. Wetlands would likely be impacted by construction at Location B; however, placement of a facility in the northern portion of this location would minimize wetland impacts. Construction at Location C could potentially result in impacts to wetlands, however placement of a facility in the southeastern portion of this location may best avoid direct impacts to wetlands. The hydrologic characteristics of nearby wetlands could be indirectly affected by adjacent construction. Executive Order 11990, ''Protection of Wetlands'', requires federal agencies to minimize the destruction, loss, or degradation of wetlands, and to preserve and enhance the natural and beneficial uses of wetlands. DOE regulations for implementing Executive Order 11990 as well as Executive Order 11988, ''Floodplain Management'', are set forth in 10 CFR Part 1022. Mitigation for unavoidable impacts may be developed in coordination with the appropriate regulatory agencies. Unavoidable impacts to wetlands that are within the jurisdiction of the USACE may require a CWA Section 404 Permit, which would trigger the requirement for a CWA Section 401 Water Quality Certification from the Commonwealth of Kentucky. A mitigation plan may be required prior to the initiation of construction. Cumulative impacts to floodplains and wetlands are anticipated to be negligible to minor under the proposed action, in conjunction with the effects of existing conditions and other activities. Habitat disturbance would involve settings commonly found i

  6. Thermochemical Conversion

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Thermochemical Conversion - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs

  7. Wind energy conversion system

    DOE Patents [OSTI]

    Longrigg, Paul (Golden, CO)

    1987-01-01

    The wind energy conversion system includes a wind machine having a propeller connected to a generator of electric power, the propeller rotating the generator in response to force of an incident wind. The generator converts the power of the wind to electric power for use by an electric load. Circuitry for varying the duty factor of the generator output power is connected between the generator and the load to thereby alter a loading of the generator and the propeller by the electric load. Wind speed is sensed electro-optically to provide data of wind speed upwind of the propeller, to thereby permit tip speed ratio circuitry to operate the power control circuitry and thereby optimize the tip speed ratio by varying the loading of the propeller. Accordingly, the efficiency of the wind energy conversion system is maximized.

  8. Conversion of Questionnaire Data

    SciTech Connect (OSTI)

    Powell, Danny H; Elwood Jr, Robert H

    2011-01-01

    During the survey, respondents are asked to provide qualitative answers (well, adequate, needs improvement) on how well material control and accountability (MC&A) functions are being performed. These responses can be used to develop failure probabilities for basic events performed during routine operation of the MC&A systems. The failure frequencies for individual events may be used to estimate total system effectiveness using a fault tree in a probabilistic risk analysis (PRA). Numeric risk values are required for the PRA fault tree calculations that are performed to evaluate system effectiveness. So, the performance ratings in the questionnaire must be converted to relative risk values for all of the basic MC&A tasks performed in the facility. If a specific material protection, control, and accountability (MPC&A) task is being performed at the 'perfect' level, the task is considered to have a near zero risk of failure. If the task is performed at a less than perfect level, the deficiency in performance represents some risk of failure for the event. As the degree of deficiency in performance increases, the risk of failure increases. If a task that should be performed is not being performed, that task is in a state of failure. The failure probabilities of all basic events contribute to the total system risk. Conversion of questionnaire MPC&A system performance data to numeric values is a separate function from the process of completing the questionnaire. When specific questions in the questionnaire are answered, the focus is on correctly assessing and reporting, in an adjectival manner, the actual performance of the related MC&A function. Prior to conversion, consideration should not be given to the numeric value that will be assigned during the conversion process. In the conversion process, adjectival responses to questions on system performance are quantified based on a log normal scale typically used in human error analysis (see A.D. Swain and H.E. Guttmann, 'Handbook of Human Reliability Analysis with Emphasis on Nuclear Power Plant Applications,' NUREG/CR-1278). This conversion produces the basic event risk of failure values required for the fault tree calculations. The fault tree is a deductive logic structure that corresponds to the operational nuclear MC&A system at a nuclear facility. The conventional Delphi process is a time-honored approach commonly used in the risk assessment field to extract numerical values for the failure rates of actions or activities when statistically significant data is absent.

  9. DOE Extends Contract to Operate Depleted Uranium Hexafluoride...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Extends Contract to Operate Depleted Uranium Hexafluoride Conversion Plants DOE Extends Contract to Operate Depleted Uranium Hexafluoride Conversion Plants December 24, 2015 -...

  10. Energy conversion system

    DOE Patents [OSTI]

    Murphy, L.M.

    1985-09-16

    The energy conversion system includes a photo-voltaic array for receiving solar radiation and converting such radiation to electrical energy. The photo-voltaic array is mounted on a stretched membrane that is held by a frame. Tracking means for orienting the photo-voltaic array in predetermined positions that provide optimal exposure to solar radiation cooperate with the frame. An enclosure formed of a radiation transmissible material includes an inside containment space that accommodates the photo-voltaic array on the stretched membrane, the frame and the tracking means, and forms a protective shield for all such components. The enclosure is preferably formed of a flexible inflatable material and maintains its preferred form, such as a dome, under the influence of a low air pressure furnished to the dome. Under this arrangement the energy conversion system is streamlined for minimizing wind resistance, sufficiently weathproof for providing protection against weather hazards such as hail, capable of using diffused light, lightweight for low-cost construction and operational with a minimal power draw.

  11. Energy conversion system

    DOE Patents [OSTI]

    Murphy, Lawrence M.

    1987-01-01

    The energy conversion system includes a photo-voltaic array for receiving solar radiation and converting such radiation to electrical energy. The photo-voltaic array is mounted on a stretched membrane that is held by a frame. Tracking means for orienting the photo-voltaic array in predetermined positions that provide optimal exposure to solar radiation cooperate with the frame. An enclosure formed of a radiation transmissible material includes an inside containment space that accommodates the photo-voltaic array on the stretched membrane, the frame and the tracking means, and forms a protective shield for all such components. The enclosure is preferably formed of a flexible inflatable material and maintains its preferred form, such as a dome, under the influence of a low air pressure furnished to the dome. Under this arrangement the energy conversion system is streamlined for minimizing wind resistance, sufficiently weatherproof for providing protection against weather hazards such as hail, capable of using diffused light, lightweight for low-cost construction, and operational with a minimal power draw.

  12. BETO Conversion Program

    Broader source: Energy.gov [DOE]

    Breakout Session 2A—Conversion Technologies II: Bio-Oils, Sugar Intermediates, Precursors, Distributed Models, and Refinery Co-Processing BETO Conversion Program Bryna Berendzen, Technology Manager, Bioenergy Technologies Office, U.S. Department of Energy

  13. Sandia Energy - Wavelength Conversion Materials

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wavelength Conversion Materials Home Energy Research EFRCs Solid-State Lighting Science EFRC Overview Wavelength Conversion Materials Wavelength Conversion MaterialsTara...

  14. Algal Polyculture Conversion & Analysis

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

    Algal Polyculture Conversion & Analysis Ron Pate This presentation does not contain any proprietary, confidential, or otherwise restricted information 24 March 2015 Algae Technology Area DOE Bioenergy Technologies Office (BETO) 2015 Project Peer Review Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. 2 | Bioenergy Technologies

  15. Conversion | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Conversion | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Countering Nuclear Terrorism About Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Library Bios Congressional Testimony Fact Sheets Newsletters Press Releases Photo Gallery Jobs Apply for Our Jobs Our Jobs Working at NNSA Blog

  16. Advanced Conversion Roadmap Workshop

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

    ... Deliverable: Roadmap for public dissemination which will guide Biomass program out-year R&D directions Workshop Objective Advanced Conversion Technology Roadmap Energy ...

  17. Thermochemical Conversion Pilot Plant (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-06-01

    The state-of-the-art thermochemical conversion pilot plant includes several configurable, complementary unit operations for testing and developing various reactors, filters, catalysts, and other unit operations. NREL engineers and scientists as well as clients can test new processes and feedstocks in a timely, cost-effective, and safe manner to obtain extensive performance data on processes or equipment.

  18. Biochemical Conversion | Department of Energy

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

    Conversion Biochemical Conversion This area focuses on the research, development and demonstration of biological processes that convert biomass to biofuels, chemicals, and power. Biochemical processes also complement thermochemical conversion by providing residual materials for further processing. Biochemical conversion will advance in the future by enhancing fuel yields in integrated biorefineries which combine conversion types with heat and power efficiencies to produce fuel and products.

  19. Conversion of raw carbonaceous fuels

    DOE Patents [OSTI]

    Cooper, John F. (Oakland, CA)

    2007-08-07

    Three configurations for an electrochemical cell are utilized to generate electric power from the reaction of oxygen or air with porous plates or particulates of carbon, arranged such that waste heat from the electrochemical cells is allowed to flow upwards through a storage chamber or port containing raw carbonaceous fuel. These configurations allow combining the separate processes of devolatilization, pyrolysis and electrochemical conversion of carbon to electric power into a single unit process, fed with raw fuel and exhausting high BTU gases, electric power, and substantially pure CO.sub.2 during operation.

  20. Sandia Energy - Utility Operations and Programs

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Utility Operations and Programs Home Stationary Power Energy Conversion Efficiency Solar Energy Photovoltaics Solar Market Transformation Utility Operations and Programs Utility...

  1. Solid Fuels Conversion

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Solid Fuels Conversion - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs Advanced

  2. Algal Biomass Conversion

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

    BETO 2015 Project Peer Review Algal Biomass Conversion WBS 1.3.4.201 Philip T. Pienkos National Renewable Energy Laboratory March 24 th , 2015 This presentation does not contain any proprietary, confidential, or otherwise restricted information 2 Goal Statement Reduce algal biofuel production cost by developing advanced process options for the conversion of algal biomass into biofuels and bioproducts based on the three major biomass components: lipids, carbohydrates, and proteins. 3 Quad Chart

  3. power conversion efficiency

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    power conversion efficiency - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs

  4. thermal energy power conversion

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    thermal energy power conversion - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs

  5. Energy Conversion Efficiency

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Conversion Efficiency - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs Advanced

  6. Wavelength Conversion Materials

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wavelength Conversion Materials - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs

  7. IL conversion technology

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    conversion technology - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs Advanced

  8. Structured luminescence conversion layer

    DOE Patents [OSTI]

    Berben, Dirk; Antoniadis, Homer; Jermann, Frank; Krummacher, Benjamin Claus; Von Malm, Norwin; Zachau, Martin

    2012-12-11

    An apparatus device such as a light source is disclosed which has an OLED device and a structured luminescence conversion layer deposited on the substrate or transparent electrode of said OLED device and on the exterior of said OLED device. The structured luminescence conversion layer contains regions such as color-changing and non-color-changing regions with particular shapes arranged in a particular pattern.

  9. Sandia Energy - Solid Fuels Conversion

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Solid Fuels Conversion Home Transportation Energy Predictive Simulation of Engines Clean FuelsPower Solid Fuels Conversion Solid Fuels ConversionAshley Otero2015-10-28T02:40:48+00...

  10. Conversion Technologies for Advanced Biofuels - Carbohydrates...

    Broader source: Energy.gov (indexed) [DOE]

    Advanced Conversion Roadmap Workshop Workshop on Conversion Technologies for Advanced Biofuels - Carbohydrates Conversion Technologies for Advanced Biofuels - Carbohydrates...

  11. Direct conversion technology

    SciTech Connect (OSTI)

    Massier, P.F.; Back, L.H.; Ryan, M.A.; Fabris, G.

    1992-01-07

    The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. This report contains progress of research on the Alkali Metal Thermal-to-Electric Converter (AMTEC) and on the Two-Phase Liquid-Metal MHD Electrical Generator (LMMHD) for the period January 1, 1991 through December 31, 1991. Research on AMTEC and on LMMHD was initiated during October 1987. Reports prepared on previous occasions (Refs. 1--5) contain descriptive and performance discussions of the following direct conversion concepts: thermoelectric, pyroelectric, thermionic, thermophotovoltaic, thermoacoustic, thermomagnetic, thermoelastic (Nitionol heat engine); and also, more complete descriptive discussions of AMTEC and LMMHD systems.

  12. Digital optical conversion module

    DOE Patents [OSTI]

    Kotter, D.K.; Rankin, R.A.

    1988-07-19

    A digital optical conversion module used to convert an analog signal to a computer compatible digital signal including a voltage-to-frequency converter, frequency offset response circuitry, and an electrical-to-optical converter. Also used in conjunction with the digital optical conversion module is an optical link and an interface at the computer for converting the optical signal back to an electrical signal. Suitable for use in hostile environments having high levels of electromagnetic interference, the conversion module retains high resolution of the analog signal while eliminating the potential for errors due to noise and interference. The module can be used to link analog output scientific equipment such as an electrometer used with a mass spectrometer to a computer. 2 figs.

  13. Digital optical conversion module

    DOE Patents [OSTI]

    Kotter, Dale K. (North Shelley, ID); Rankin, Richard A. (Ammon, ID)

    1991-02-26

    A digital optical conversion module used to convert an analog signal to a computer compatible digital signal including a voltage-to-frequency converter, frequency offset response circuitry, and an electrical-to-optical converter. Also used in conjunction with the digital optical conversion module is an optical link and an interface at the computer for converting the optical signal back to an electrical signal. Suitable for use in hostile environments having high levels of electromagnetic interference, the conversion module retains high resolution of the analog signal while eliminating the potential for errors due to noise and interference. The module can be used to link analog output scientific equipment such as an electrometer used with a mass spectrometer to a computer.

  14. Direct Conversion Technology

    SciTech Connect (OSTI)

    Back, L.H.; Fabris, G.; Ryan, M.A.

    1992-07-01

    The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. Initially, two systems were selected for exploratory research and advanced development. These are Alkali Metal Thermal-to-Electric Converter (AMTEC) and Two-Phase Liquid Metal MD Generator (LMMHD). This report describes progress that has been made during the first six months of 1992 on research activities associated with these two systems. (GHH)

  15. Ocean thermal energy conversion

    SciTech Connect (OSTI)

    Avery, W.H.

    1983-03-17

    A brief explanation of the Ocean Thermal Energy Conversion (OTEC) concept and an estimate of the amount of energy that can be produced from the ocean resource without introducing environmental concerns are presented. Use of the OTEC system to generate electric power and products which can replace fossil fuels is shown. The OTEC program status and its prospects for the future are discussed.

  16. Direct Carbon Conversion: Application to the Efficient Conversion of Fossil Fuels to Electricity

    SciTech Connect (OSTI)

    Cooper, J F; Cherepy, N; Berry, G; Pasternak, A; Surles, T; Steinberg, M

    2001-03-07

    We introduce a concept for efficient conversion of fossil fuels to electricity that entails the decomposition of fossil-derived hydrocarbons into carbon and hydrogen, and electrochemical conversion of these fuels in separate fuel cells. Carbon/air fuel cells have the advantages of near zero entropy change and associated heat production (allowing 100% theoretical conversion efficiency). The activities of the C fuel and CO{sub 2} product are invariant, allowing constant EMF and full utilization of fuel in single pass mode of operation. System efficiency estimates were conducted for several routes involving sequential extraction of a hydrocarbon from the fossil resource by (hydro) pyrolysis followed by thermal decomposition. The total energy conversion efficiencies of the processes were estimated to be (1) 80% for direct conversion of petroleum coke; (2) 67% HHV for CH{sub 4}; (3) 72% HHV for heavy oil (modeled using properties of decane); (4) 75.5% HHV (83% LHV) for natural gas conversion with a Rankine bottoming cycle for the H{sub 2} portion; and (5) 69% HHV for conversion of low rank coals and lignite through hydrogenation and pyrolysis of the CH{sub 4} intermediate. The cost of carbon fuel is roughly $7/GJ, based on the cost of the pyrolysis step in the industrial furnace black process. Cell hardware costs are estimated to be less than $500/kW.

  17. Power conversion apparatus and method

    DOE Patents [OSTI]

    Su, Gui-Jia (Knoxville, TN)

    2012-02-07

    A power conversion apparatus includes an interfacing circuit that enables a current source inverter to operate from a voltage energy storage device (voltage source), such as a battery, ultracapacitor or fuel cell. The interfacing circuit, also referred to as a voltage-to-current converter, transforms the voltage source into a current source that feeds a DC current to a current source inverter. The voltage-to-current converter also provides means for controlling and maintaining a constant DC bus current that supplies the current source inverter. The voltage-to-current converter also enables the current source inverter to charge the voltage energy storage device, such as during dynamic braking of a hybrid electric vehicle, without the need of reversing the direction of the DC bus current.

  18. Thermochemical Conversion | Department of Energy

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

    Conversion Thermochemical Conversion The Bioenergy Technologies Office conducts research on heat-, pressure-, and catalyst-based conversion of various biomass feedstocks to biofuels, chemicals, and power. These conversion processes, most notably fast pyrolysis (as well as other forms of direct liquefaction) and gasification, are described in detail in the links on the left. The Thermochemical Platform aims to efficiently produce biobased fuels and co-products via liquefaction and pyrolysis,

  19. Biomass Thermochemical Conversion Program. 1984 annual report

    SciTech Connect (OSTI)

    Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

    1985-01-01

    The objective of the program is to generate scientific data and conversion process information that will lead to establishment of cost-effective process for converting biomass resources into clean fuels. The goal of the program is to develop the data base for biomass thermal conversion by investigating the fundamental aspects of conversion technologies and by exploring those parameters that are critical to the conversion processes. The research activities can be divided into: (1) gasification technology; (2) liquid fuels technology; (3) direct combustion technology; and (4) program support activities. These activities are described in detail in this report. Outstanding accomplishments during fiscal year 1984 include: (1) successful operation of 3-MW combustor/gas turbine system; (2) successful extended term operation of an indirectly heated, dual bed gasifier for producing medium-Btu gas; (3) determination that oxygen requirements for medium-Btu gasification of biomass in a pressurized, fluidized bed gasifier are low; (4) established interdependence of temperature and residence times on biomass pyrolysis oil yields; and (5) determination of preliminary technical feasibility of thermally gasifying high moisture biomass feedstocks. A bibliography of 1984 publications is included. 26 figs., 1 tab.

  20. Operation Schedule

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Operation Schedule Daily Hours of Operation

  1. Zinc phosphate conversion coatings

    DOE Patents [OSTI]

    Sugama, Toshifumi

    1997-01-01

    Zinc phosphate conversion coatings for producing metals which exhibit enhanced corrosion prevention characteristics are prepared by the addition of a transition-metal-compound promoter comprising a manganese, iron, cobalt, nickel, or copper compound and an electrolyte such as polyacrylic acid, polymethacrylic acid, polyitaconic acid and poly-L-glutamic acid to a phosphating solution. These coatings are further improved by the incorporation of Fe ions. Thermal treatment of zinc phosphate coatings to generate .alpha.-phase anhydrous zinc phosphate improves the corrosion prevention qualities of the resulting coated metal.

  2. Zinc phosphate conversion coatings

    DOE Patents [OSTI]

    Sugama, T.

    1997-02-18

    Zinc phosphate conversion coatings for producing metals which exhibit enhanced corrosion prevention characteristics are prepared by the addition of a transition-metal-compound promoter comprising a manganese, iron, cobalt, nickel, or copper compound and an electrolyte such as polyacrylic acid, polymethacrylic acid, polyitaconic acid and poly-L-glutamic acid to a phosphating solution. These coatings are further improved by the incorporation of Fe ions. Thermal treatment of zinc phosphate coatings to generate {alpha}-phase anhydrous zinc phosphate improves the corrosion prevention qualities of the resulting coated metal. 33 figs.

  3. Atlantic Biomass Conversions Inc | Open Energy Information

    Open Energy Info (EERE)

    Biomass Conversions Inc Jump to: navigation, search Name: Atlantic Biomass Conversions Inc Place: Frederick, Maryland Sector: Biomass Product: Atlantic Biomass Conversions is...

  4. Gyroharmonic conversion experiments

    SciTech Connect (OSTI)

    Hirshfield, J.L.; LaPointe, M.A.; Ganguly, A.K. [Omega-P, Inc., New Haven, Connecticut 06520 (United States); LaPointe, M.A. [Yale University, New Haven, Connecticut 06511 (United States)

    1999-05-01

    Generation of high power microwaves has been observed in experiments where a 250{endash}350 kV, 20{endash}30 A electron beam accelerated in a cyclotron autoresonance accelerator (CARA) passes through a cavity tuned gyroharmonic) and at 8.6 GHz (3rd harmonic) will be described. Theory indicates that high conversion efficiency can be obtained for a high quality beam injected into CARA, and when mode competition can be controlled. Comparisons will be made between the experiments and theory. Planned 7th harmonic experiments will also be described, in which phase matching between the TE-72 mode at 20 GHz, and the TE-11 mode at 2.86 GHz, allows efficient 20 GHz co-generation within the CARA waveguide itself. {copyright} {ital 1999 American Institute of Physics.}

  5. Gyroharmonic conversion experiments

    SciTech Connect (OSTI)

    Hirshfield, J. L.; LaPointe, M. A. [Omega-P, Inc., New Haven, Connecticut 06520 (United States); Yale University, New Haven, Connecticut 06511 (United States); Ganguly, A. K. [Omega-P, Inc., New Haven, Connecticut 06520 (United States)

    1999-05-07

    Generation of high power microwaves has been observed in experiments where a 250-350 kV, 20-30 A electron beam accelerated in a cyclotron autoresonance accelerator (CARA) passes through a cavity tuned gyroharmonic) and at 8.6 GHz (3rd harmonic) will be described. Theory indicates that high conversion efficiency can be obtained for a high quality beam injected into CARA, and when mode competition can be controlled. Comparisons will be made between the experiments and theory. Planned 7th harmonic experiments will also be described, in which phase matching between the TE-72 mode at 20 GHz, and the TE-11 mode at 2.86 GHz, allows efficient 20 GHz co-generation within the CARA waveguide itself.

  6. Conversion Technologies for Advanced Biofuels - Carbohydrates...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications Conversion Technologies for Advanced Biofuels - Carbohydrates Production Advanced Conversion Roadmap Workshop Innovative Topics for...

  7. Solar Thermoelectric Energy Conversion | Department of Energy

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

    Solar Thermoelectric Energy Conversion Solar Thermoelectric Energy Conversion Efficiencies of different types of solar thermoelectric generators were predicted using theoretical ...

  8. Biochemical Conversion Pilot Plant (Fact Sheet), NREL (National Renewable Energy Laboratory)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Biochemical Conversion Pilot Plant A pilot-scale conversion plant for researchers, industry partners, and stakeholders to test a variety of biochemical conversion processes and technologies. NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. In the biochemical conversion pilot plant, NREL's engineers and scientists focus on all aspects of the efficiency and cost reduction of

  9. Kinetics of high-conversion hydrocracking of bitumen

    SciTech Connect (OSTI)

    Nagaishi, H.; Gray, M.R.; Chan, E.W.; Sanford, E.C.

    1995-12-31

    Residues are complex mixtures of thousands of components. This mixture will change during hydrocracking, so that high conversion may result in a residue material with different characteristics from the starting material. Our objective is to determine the kinetics of residue conversion and yields of distillates at high conversions, and to relate these observations to the underlying chemical reactions. Athabasca bitumen was reacted in a 1-L CSTR in a multipass operation. Product from the first pass was collected, then run through the reactor again and so on, giving kinetic data under conditions that simulated a multi-reactor or packed-bed operation. Experiments were run both with hydrocracking catalyst and without added catalyst. Products were analyzed by distillation, elemental analysis, NMR, and GPC. These data will be used to derive a kinetic model for hydrocracking of bitumen residue covering a wide range of conversion (from 30% to 95%+), based on the underlying chemistry.

  10. Method for the photocatalytic conversion of gas hydrates

    DOE Patents [OSTI]

    Taylor, Charles E. (Pittsburg, PA); Noceti, Richard P. (Pittsburg, PA); Bockrath, Bradley C. (Bethel Park, PA)

    2001-01-01

    A method for converting methane hydrates to methanol, as well as hydrogen, through exposure to light. The process includes conversion of methane hydrates by light where a radical initiator has been added, and may be modified to include the conversion of methane hydrates with light where a photocatalyst doped by a suitable metal and an electron transfer agent to produce methanol and hydrogen. The present invention operates at temperatures below 0.degree. C., and allows for the direct conversion of methane contained within the hydrate in situ.

  11. Evaluation of Thermal to Electrical Energy Conversion of High Temperature

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

    Skutterudite-Based Thermoelectric Modules | Department of Energy Thermal to Electrical Energy Conversion of High Temperature Skutterudite-Based Thermoelectric Modules Evaluation of Thermal to Electrical Energy Conversion of High Temperature Skutterudite-Based Thermoelectric Modules Discusses progress toward the fabrication of a skutterudite-based TE module and provides module performance data under operating conditions similar to those for automotive applications PDF icon deer11_salvador.pdf

  12. Conversations and Connections - The Expertise of our Small Business

    Office of Environmental Management (EM)

    Program Managers | Department of Energy Conversations and Connections - The Expertise of our Small Business Program Managers Conversations and Connections - The Expertise of our Small Business Program Managers August 20, 2012 - 2:57pm Addthis Freda Hopper serves as a Small Business Program Manager at Oak Ridge Operations Office, helping small businesses learn how to work with the Department and access contract opportunities. Here, she joins Dot Harris (at podium) at a Small Business Summit

  13. PDB to AMPL Conversion

    Energy Science and Technology Software Center (OSTI)

    2002-09-01

    PDB to AMPL Conversion was written to convert protein data base files to AMPL files. The protein data bases on the internet contain a wealth of information about the structue and makeup of proteins. Each file contains information derived by one or more experiments and contains information on how the experiment waw performed, the amino acid building blocks of each chain, and often the three-dimensional structure of the protein extracted from the experiments. The waymore » a protein folds determines much about its function. Thus, studying the three-dimensional structure of the protein is of great interest. Analysing the contact maps is one way to examine the structure. A contact map is a graph which has a linear back bone of amino acids for nodes (i.e., adjacent amino acids are always connected) and vertices between non-adjacent nodes if they are close enough to be considered in contact. If the graphs are similar then the folds of the protein and their function should also be similar. This software extracts the contact maps from a protein data base file and puts in into AMPL data format. This format is designed for use in AMPL, a programming language for simplifying linear programming formulations.« less

  14. Static Scale Conversion (SSC)

    Energy Science and Technology Software Center (OSTI)

    2007-01-19

    The Static Scale Conversion (SSC) software is a unique enhancement to the AIMVEE system. It enables a SSC to weigh and measure vehicles and cargo dynamically (i.e., as they pass over the large scale. Included in the software is the AIMVEE computer code base. The SSC and AIMVEE computer system electronically continue to retrieve deployment information, identify vehicle automatically and determine total weight, individual axle weights, axle spacing and center-of-balance for any wheeled vehicle inmore » motion. The AIMVEE computer code system can also perform these functions statically for both wheel vehicles and cargo with information. The AIMVEE computer code system incorporates digital images and applies cubing algorithms to determine length, width, height for cubic dimensions of both vehicle and cargo. Once all this information is stored, it electronically links to data collection and dissemination systems to provide “actual” weight and measurement information for planning, deployment, and in-transit visibility.« less

  15. Sandia Energy - SWiFT Operations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Operations Home Stationary Power Energy Conversion Efficiency Wind Energy SWiFT Facility & Testing SWiFT Operations SWiFT Operationscwdd2015-05-28T15:24:41+00:00 wind-turbines The...

  16. Alternative Fuels Data Center: Vehicle Conversions

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Conversions Printable Version Share this resource Send a link to Alternative Fuels Data Center: Vehicle Conversions to someone by E-mail Share Alternative Fuels Data Center: Vehicle Conversions on Facebook Tweet about Alternative Fuels Data Center: Vehicle Conversions on Twitter Bookmark Alternative Fuels Data Center: Vehicle Conversions on Google Bookmark Alternative Fuels Data Center: Vehicle Conversions on Delicious Rank Alternative Fuels Data Center: Vehicle Conversions on Digg Find More

  17. Alternative Fuels Data Center: Conversion Regulations

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Conversion Regulations to someone by E-mail Share Alternative Fuels Data Center: Conversion Regulations on Facebook Tweet about Alternative Fuels Data Center: Conversion Regulations on Twitter Bookmark Alternative Fuels Data Center: Conversion Regulations on Google Bookmark Alternative Fuels Data Center: Conversion Regulations on Delicious Rank Alternative Fuels Data Center: Conversion Regulations on Digg Find More places to share Alternative Fuels Data Center: Conversion Regulations on

  18. Advanced Conversion Roadmap Workshop | Department of Energy

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

    Advanced Conversion Roadmap Workshop Advanced Conversion Roadmap Workshop DOE introduction slides to the Advanced Conversion Roadmap Workshop webinar. PDF icon ctab_webinar_doe.pdf More Documents & Publications Conversion Technologies for Advanced Biofuels - Bio-Oil Production Conversion Technologies for Advanced Biofuels - Bio-Oil Upgrading Technology Pathway Selection Effort

  19. Enzymes for improved biomass conversion

    DOE Patents [OSTI]

    Brunecky, Roman; Himmel, Michael E.

    2016-02-02

    Disclosed herein are enzymes and combinations of the enzymes useful for the hydrolysis of cellulose and the conversion of biomass. Methods of degrading cellulose and biomass using enzymes and cocktails of enzymes are also disclosed.

  20. Start Your Energy Conversion Devices

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Start Your Energy Conversion Devices "Start Your Energy Conversion Devices" Sunrayce 97 Begins Day 1 - Indianapolis to Terre Haute For more information contact: Patrick Booher, Program Manager Sunrayce 97 586-9275 Cathy Short 586-9302 Terre Haute, Ind., June 19, 1997 -- Manta GT, the Massachusetts Institute of Technology's entry in Sunrayce 97 made the quickest trip Thursday from the Indianapolis Motor Speedway to Terre Haute in the first leg North America's largest solar car event.

  1. EPA Redesigns Conversion Certification Policies

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    EPA Redesigns Conversion Certification Policies At a recent meeting held in Washington, DC, officials from the U.S. Environmental Protection Agency (EPA) opened dialogue about proposed changes to its emission certification policies that affect alternative fuel vehicles (AFVs). "We are trying to accommo- date the Energy Policy Act (EPAct) and Executive Order requirements while trying to change enforce- ment policies and guidance with respect to conversions," said Rich Ackerman of EPA's

  2. Role of acid catalysis in dimethyl ether conversion processes

    SciTech Connect (OSTI)

    Tartamella, T.L.; Lee, S.

    1996-12-31

    Acidity plays an important role in the conversion of methanol and dimethyl ether (DME) to hydrocarbons and oxygenates. In the conversion to hydrocarbons over zeolite catalyst, Broensted acidity is the main contributor to the first hydrocarbon formed. Here, acidity is also an important factor in determining olefin, paraffin, and aromatic content in the final product distribution. Catalyst life has also been found to be related to acidity content in zeolites. DME conversion to oxygenates is especially dependent on high acidity catalysts. Superacids like BF{sub 3}, HF-BF{sub 3}, and CF{sub 3}COOH have been used in the past for conversion of DME in carbonylation reactions to form methyl acetate and acetic acid at high pressures. Recently, heteropoly acids and their corresponding metal substituted salts have been used to convert DME to industrially important petrochemicals resulting in shorter reaction times and without the use of harsh operating conditions.

  3. Alternative Fuels Data Center: Propane Vehicle Conversions

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Conversions to someone by E-mail Share Alternative Fuels Data Center: Propane Vehicle Conversions on Facebook Tweet about Alternative Fuels Data Center: Propane Vehicle Conversions on Twitter Bookmark Alternative Fuels Data Center: Propane Vehicle Conversions on Google Bookmark Alternative Fuels Data Center: Propane Vehicle Conversions on Delicious Rank Alternative Fuels Data Center: Propane Vehicle Conversions on Digg Find More places to share Alternative Fuels Data Center: Propane Vehicle

  4. Alternative Fuels Data Center: Vehicle Conversion Basics

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Vehicle Conversion Basics to someone by E-mail Share Alternative Fuels Data Center: Vehicle Conversion Basics on Facebook Tweet about Alternative Fuels Data Center: Vehicle Conversion Basics on Twitter Bookmark Alternative Fuels Data Center: Vehicle Conversion Basics on Google Bookmark Alternative Fuels Data Center: Vehicle Conversion Basics on Delicious Rank Alternative Fuels Data Center: Vehicle Conversion Basics on Digg Find More places to share Alternative Fuels Data Center: Vehicle

  5. Conversation with Paul Brown | Open Energy Information

    Open Energy Info (EERE)

    Conversation with Paul Brown Jump to: navigation, search OpenEI Reference LibraryAdd to library Personal Communication: Conversation with Paul Brown Author Paul Brown Recipient...

  6. Biological Conversion of Sugars To Hydrocarbons | Department...

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

    To Hydrocarbons Biological Conversion of Sugars To Hydrocarbons PDF explaining the biological process of bioenergy PDF icon Biological Conversion of Sugars To Hydrocarbons More...

  7. Nanostructured High Temperature Bulk Thermoelectric Energy Conversion...

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

    High Temperature Bulk Thermoelectric Energy Conversion for Efficient Waste Heat Recovery Nanostructured High Temperature Bulk Thermoelectric Energy Conversion for Efficient Waste ...

  8. Biochemical Conversion: Using Hydrolysis, Fermentation, and Catalysis...

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

    Biochemical Conversion: Using Hydrolysis, Fermentation, and Catalysis to Make Fuels and Chemicals Biochemical Conversion: Using Hydrolysis, Fermentation, and Catalysis to Make...

  9. Efficient electrochemical CO2 conversion powered by renewable energy

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kauffman, Douglas R.; Thakkar, Jay; Siva, Rajan; Matranga, Christopher; Ohodnicki, Paul R.; Zeng, Chenjie; Jin, Rongchao

    2015-06-29

    The catalytic conversion of CO2 into industrially relevant chemicals is one strategy for mitigating greenhouse gas emissions. Along these lines, electrochemical CO2 conversion technologies are attractive because they can operate with high reaction rates at ambient conditions. However, electrochemical systems require electricity, and CO2 conversion processes must integrate with carbon-free, renewable-energy sources to be viable on larger scales. We utilize Au25 nanoclusters as renewably powered CO2 conversion electrocatalysts with CO2 → CO reaction rates between 400 and 800 L of CO2 per gram of catalytic metal per hour and product selectivities between 80 and 95%. These performance metrics correspond tomore » conversion rates approaching 0.8–1.6 kg of CO2 per gram of catalytic metal per hour. We also present data showing CO2 conversion rates and product selectivity strongly depend on catalyst loading. Optimized systems demonstrate stable operation and reaction turnover numbers (TONs) approaching 6 × 106 mol CO2 molcatalyst–1 during a multiday (36 hours total hours) CO2electrolysis experiment containing multiple start/stop cycles. TONs between 1 × 106 and 4 × 106 molCO2 molcatalyst–1 were obtained when our system was powered by consumer-grade renewable-energy sources. Daytime photovoltaic-powered CO2 conversion was demonstrated for 12 h and we mimicked low-light or nighttime operation for 24 h with a solar-rechargeable battery. This proof-of-principle study provides some of the initial performance data necessary for assessing the scalability and technical viability of electrochemical CO2 conversion technologies. Specifically, we show the following: (1) all electrochemical CO2 conversion systems will produce a net increase in CO2 emissions if they do not integrate with renewable-energy sources, (2) catalyst loading vs activity trends can be used to tune process rates and product distributions, and (3) state-of-the-art renewable-energy technologies are sufficient to power larger-scale, tonne per day CO2 conversion systems.« less

  10. Conversion Tower for Dispatchable Solar Power: High-Efficiency Solar-Electric Conversion Power Tower

    SciTech Connect (OSTI)

    2012-01-11

    HEATS Project: Abengoa Solar is developing a high-efficiency solar-electric conversion tower to enable low-cost, fully dispatchable solar energy generation. Abengoas conversion tower utilizes new system architecture and a two-phase thermal energy storage media with an efficient supercritical carbon dioxide (CO2) power cycle. The company is using a high-temperature heat-transfer fluid with a phase change in between its hot and cold operating temperature. The fluid serves as a heat storage material and is cheaper and more efficient than conventional heat-storage materials, like molten salt. It also allows the use of a high heat flux solar receiver, advanced high thermal energy density storage, and more efficient power cycles.

  11. Biological Conversion of Sugars to Hydrocarbons Technology Pathway

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Biological Conversion of Sugars to Hydrocarbons Technology Pathway Ryan Davis, Mary Biddy, Eric Tan, and Ling Tao National Renewable Energy Laboratory Susanne Jones Pacific Northwest National Laboratory NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC, under contract DE-AC36-08GO28308. Pacific Northwest National Laboratory is operated by Battelle for the United States

  12. Biological Conversion of Sugars to Hydrocarbons Technology Pathway

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

    Biological Conversion of Sugars to Hydrocarbons Technology Pathway Ryan Davis, Mary Biddy, Eric Tan, and Ling Tao National Renewable Energy Laboratory Susanne Jones Pacific Northwest National Laboratory NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC, under contract DE-AC36-08GO28308. Pacific Northwest National Laboratory is operated by Battelle for the United States

  13. Biochemical Conversion - Biorefinery Integration | Department of Energy

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

    Research & Development » Conversion Technologies » Biochemical Conversion » Biochemical Conversion - Biorefinery Integration Biochemical Conversion - Biorefinery Integration One of the essential elements in the economical and efficient production of cellulosic biofuels is the development of biorefineries. Similar in concept to traditional petroleum refineries, biorefineries convert various types of biomass feedstock into marketable chemicals, fuels, and products. By taking advantage of

  14. Biomass Program 2007 Accomplishments - Biochemical Conversion Platform

    SciTech Connect (OSTI)

    none,

    2009-10-27

    This document details accomplishments of the Biomass Program Biochemical Conversion Platform accomplishments in 2007.

  15. Biochemical Conversion Pilot Plant (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-06-01

    This fact sheet provides information about Biochemical Conversion Pilot Plant capabilities and resources at NREL.

  16. Biomass Program 2007 Accomplishments - Thermochemical Conversion Platform

    SciTech Connect (OSTI)

    none,

    2009-10-27

    This document details the accomplishments of the Biomass Program Thermochemical Conversion Platform in 2007.

  17. Conversion Technologies for Advanced Biofuels - Carbohydrates Production

    Office of Environmental Management (EM)

    | Department of Energy Production Conversion Technologies for Advanced Biofuels - Carbohydrates Production Purdue University report-out presentation at the CTAB webinar on Carbohydrates Production. PDF icon ctab_webinar_carbohydrates_production.pdf More Documents & Publications Advanced Conversion Roadmap Workshop Workshop on Conversion Technologies for Advanced Biofuels - Carbohydrates Conversion Technologies for Advanced Biofuels - Carbohydrates Upgrading

  18. Recirculation in multiple wave conversions

    SciTech Connect (OSTI)

    Kaufman, A. N.; Brizard, A.J.; Kaufman, A.N.; Tracy, E.R.

    2008-07-30

    A one-dimensional multiple wave-conversion model is constructed that allows energy recirculation in ray phase space. Using a modular eikonal approach, the connection coefficients for this model are calculated by ray phase-space methods. Analytical results (confirmed numerically) show that all connection coefficients exhibit interference effects that depend on an interference phase, calculated from the coupling constants and the area enclosed by the intersecting rays. This conceptual model, which focuses on the topology of intersecting rays in phase space, is used to investigate how mode conversion between primary and secondary waves is modified by the presence of a tertiary wave.

  19. EIS-0359: Uranium Hexafluoride Conversion Facility at the Paducah, Kentucky Site

    Broader source: Energy.gov [DOE]

    This site-specific EIS considers the construction, operation, maintenance, and decontamination and decommissioning of the proposed depleted uranium hexafluoride (DUF6) conversion facility at three locations within the Paducah site; transportation of depleted uranium conversion products and waste materials to a disposal facility; transportation and sale of the hydrogen fluoride (HF) produced as a conversion co-product; and neutralization of HF to calcium fluoride and its sale or disposal in the event that the HF product is not sold.

  20. Biofuel Conversion Basics | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    The conversion of biomass solids into liquid or gaseous biofuels is a complex process. Today, the most common conversion processes are biochemical- and thermochemical-based. However, researchers are also exploring photobiological conversion processes. Biochemical Conversion Processes In biochemical conversion processes, enzymes and microorganisms are used as biocatalysts to convert biomass or biomass-derived compounds into desirable products. Cellulase and hemicellulase enzymes break down the

  1. Biochemical Conversion Related Links | Department of Energy

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

    Conversion » Biochemical Conversion Related Links Biochemical Conversion Related Links Further reading about current Bioenergy Technologies Office R&D in the Biochemical Platform can be found in this website's Information Resources section. Key publications will also be provided on this page. Using Fermentation and Catalysis to Make Fuels and Products: Biochemical Conversion (January 2011) Biochemical Conversion 2009 Peer Review Biochemical Production of Ethanol from Corn Stover: 2007 State

  2. Thermochemical Conversion Related Links | Department of Energy

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

    Conversion » Thermochemical Conversion Related Links Thermochemical Conversion Related Links Further reading about current Bioenergy Technologies Office R&D in the Thermochemical Platform can be found in this website's Information Resources section. Some key publications are: Using Heat and Chemistry to Make Fuel and Power: Thermochemical Conversion (January 2011) Thermochemical Conversion 2009 Peer Review Design Case Summary: Production of Gasoline and Diesel from Biomass via Fast

  3. Ocean thermal energy conversion (OTEC)

    SciTech Connect (OSTI)

    Lockerby, R.W.

    1981-01-01

    Ocean thermal energy conversion (OTEC) is reviewed briefly. The two types of OTEC system (open and closed) are described and limitations are pointed out. A bibliography of 148 references on OTEC is given for the time period 1975 to 1980. Entries are arranged alphabetically according to the author's name. (MJJ)

  4. Simultaneous constraint and phase conversion processing of oxide superconductors

    DOE Patents [OSTI]

    Li, Qi (Marlborough, MA); Thompson, Elliott D. (Coventry, RI); Riley, Jr., Gilbert N. (Marlborough, MA); Hellstrom, Eric E. (Madison, WI); Larbalestier, David C. (Madison, WI); DeMoranville, Kenneth L. (Jefferson, MA); Parrell, Jeffrey A. (Roselle Park, NJ); Reeves, Jodi L. (Madison, WI)

    2003-04-29

    A method of making an oxide superconductor article includes subjecting an oxide superconductor precursor to a texturing operation to orient grains of the oxide superconductor precursor to obtain a highly textured precursor; and converting the textured oxide superconducting precursor into an oxide superconductor, while simultaneously applying a force to the precursor which at least matches the expansion force experienced by the precursor during phase conversion to the oxide superconductor. The density and the degree of texture of the oxide superconductor precursor are retained during phase conversion. The constraining force may be applied isostatically.

  5. Electrocatalysts for carbon dioxide conversion

    DOE Patents [OSTI]

    Masel, Richard I; Salehi-Khojin, Amin

    2015-04-21

    Electrocatalysts for carbon dioxide conversion include at least one catalytically active element with a particle size above 0.6 nm. The electrocatalysts can also include a Helper Catalyst. The catalysts can be used to increase the rate, modify the selectivity or lower the overpotential of electrochemical conversion of CO.sub.2. Chemical processes and devices using the catalysts also include processes to produce CO, HCO.sup.-, H.sub.2CO, (HCO.sub.2).sup.-, H.sub.2CO.sub.2, CH.sub.3OH, CH.sub.4, C.sub.2H.sub.4, CH.sub.3CH.sub.2OH, CH.sub.3COO.sup.-, CH.sub.3COOH, C.sub.2H.sub.6, (COOH).sub.2, or (COO.sup.-).sub.2, and a specific device, namely, a CO.sub.2 sensor.

  6. The National Conversion Pilot Project

    SciTech Connect (OSTI)

    Roberts, A.V.

    1995-12-31

    The National Conversion Pilot Project (NCPP) is a recycling project under way at the U.S. Department of Energy (DOE) Rocky Flats Environmental Technology Site (RFETS) in Colorado. The recycling aim of the project is threefold: to reuse existing nuclear weapon component production facilities for the production of commercially marketable products, to reuse existing material (uranium, beryllium, and radioactively contaminated scrap metals) for the production of these products, and to reemploy former Rocky Flats workers in this process.

  7. Methods for locating ground faults and insulation degradation condition in energy conversion systems

    DOE Patents [OSTI]

    Agamy, Mohamed; Elasser, Ahmed; Galbraith, Anthony William; Harfman Todorovic, Maja

    2015-08-11

    Methods for determining a ground fault or insulation degradation condition within energy conversion systems are described. A method for determining a ground fault within an energy conversion system may include, in part, a comparison of baseline waveform of differential current to a waveform of differential current during operation for a plurality of DC current carrying conductors in an energy conversion system. A method for determining insulation degradation within an energy conversion system may include, in part, a comparison of baseline frequency spectra of differential current to a frequency spectra of differential current transient at start-up for a plurality of DC current carrying conductors in an energy conversion system. In one embodiment, the energy conversion system may be a photovoltaic system.

  8. Research Reactor Conversion | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Reactor Conversion | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the...

  9. Processing and Conversion | Department of Energy

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

    Research & Development » Processing and Conversion Processing and Conversion The strategic goal of Conversion Research and Development (R&D) is to develop technologies for converting feedstocks into commercially viable liquid transportation fuels, as well as bioproducts and biopower. The diversity of the biomass resource requires the development of multiple conversion technologies that can efficiently deal with the broad range of feedstock materials, as well as their physical and

  10. Conversion Technologies for Advanced Biofuels - Carbohydrates Upgrading |

    Office of Environmental Management (EM)

    Department of Energy Upgrading Conversion Technologies for Advanced Biofuels - Carbohydrates Upgrading PNNL report-out presentation at the CTAB webinar on carbohydrates upgrading. PDF icon ctab_webinar_carbohydrates_upgrading.pdf More Documents & Publications Conversion Technologies for Advanced Biofuels - Carbohydrates Production Advanced Conversion Roadmap Workshop Innovative Topics for Advanced Biofuels

  11. Formation of alcohol conversion catalysts

    DOE Patents [OSTI]

    Wachs, Israel E. (Bridgewater, NJ); Cai, Yeping (Louisville, KY)

    2001-01-01

    The method of the present invention involves a composition containing an intimate mixture of (a) metal oxide support particles and (b) a catalytically active metal oxide from Groups VA, VIA, or VIIA, its method of manufacture, and its method of use for converting alcohols to aldehydes. During the conversion process, catalytically active metal oxide from the discrete catalytic metal oxide particles migrates to the oxide support particles and forms a monolayer of catalytically active metal oxide on the oxide support particle to form a catalyst composition having a higher specific activity than the admixed particle composition.

  12. High resolution A/D conversion based on piecewise conversion at lower resolution

    DOE Patents [OSTI]

    Terwilliger, Steve (Albuquerque, NM)

    2012-06-05

    Piecewise conversion of an analog input signal is performed utilizing a plurality of relatively lower bit resolution A/D conversions. The results of this piecewise conversion are interpreted to achieve a relatively higher bit resolution A/D conversion without sampling frequency penalty.

  13. Biomass thermochemical conversion program. 1985 annual report

    SciTech Connect (OSTI)

    Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

    1986-01-01

    Wood and crop residues constitute a vast majority of the biomass feedstocks available for conversion, and thermochemical processes are well suited for conversion of these materials. The US Department of Energy (DOE) is sponsoring research on this conversion technology for renewable energy through its Biomass Thermochemical Conversion Program. The Program is part of DOE's Biofuels and Municipal Waste Technology Division, Office of Renewable Technologies. This report briefly describes the Thermochemical Conversion Program structure and summarizes the activities and major accomplishments during fiscal year 1985. 32 figs., 4 tabs.

  14. Conversion Technologies for Advanced Biofuels … Bio-Oil Upgrading

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

    Upgrading Report-Out Webinar February 9, 2012 Doug C. Elliott PNNL Energy Efficiency & Renewable Energy eere.energy.gov 2 Douglas C. Elliott Laboratory Fellow Pacific Northwest National Laboratory 1974 - present PNNL B.S. in Chemistry from Montana State University M.B.A. in Operations and Systems Analysis from the University of Washington  Over 37 years of project management and research experience in biomass thermochemical conversion R&D involving biomass liquefaction and bio-oil

  15. Thermophotovoltaic energy conversion using photonic bandgap selective emitters

    DOE Patents [OSTI]

    Gee, James M. (Albuquerque, NM); Lin, Shawn-Yu (Albuquerque, NM); Fleming, James G. (Albuquerque, NM); Moreno, James B. (Albuquerque, NM)

    2003-06-24

    A method for thermophotovoltaic generation of electricity comprises heating a metallic photonic crystal to provide selective emission of radiation that is matched to the peak spectral response of a photovoltaic cell that converts the radiation to electricity. The use of a refractory metal, such as tungsten, for the photonic crystal enables high temperature operation for high radiant flux and high dielectric contrast for a full 3D photonic bandgap, preferable for efficient thermophotovoltaic energy conversion.

  16. Research and development on ocean thermal energy conversion in Japan

    SciTech Connect (OSTI)

    Uehara, H.

    1982-08-01

    The study of Ocean Thermal Energy Conversion (OTEC) in Japan has been conducted under the leadership of a team of the ''Sunshine Project'', a national new energy development project promoted by the Ministry of International Trade and Industries (MITI) since 1974. At present, two experimental OTEC power plants -Nauru's OTEC plant and Imari's OTEC plant are operating. In this paper, the review of research and development activity of these two OTEC plants in Japan is made.

  17. Biomass Thermochemical Conversion Program: 1986 annual report

    SciTech Connect (OSTI)

    Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

    1987-01-01

    Wood and crop residues constitute a vast majority of the biomass feedstocks available for conversion, and thermochemical processes are well suited for conversion of these materials. Thermochemical conversion processes can generate a variety of products such as gasoline hydrocarbon fuels, natural gas substitutes, or heat energy for electric power generation. The US Department of Energy is sponsoring research on biomass conversion technologies through its Biomass Thermochemical Conversion Program. Pacific Northwest Laboratory has been designated the Technical Field Management Office for the Biomass Thermochemical Conversion Program with overall responsibility for the Program. This report briefly describes the Thermochemical Conversion Program structure and summarizes the activities and major accomplishments during fiscal year 1986. 88 refs., 31 figs., 5 tabs.

  18. Charging system with galvanic isolation and multiple operating modes

    DOE Patents [OSTI]

    Kajouke, Lateef A.; Perisic, Milun; Ransom, Ray M.

    2013-01-08

    Systems and methods are provided for operating a charging system with galvanic isolation adapted for multiple operating modes. A vehicle charging system comprises a DC interface, an AC interface, a first conversion module coupled to the DC interface, and a second conversion module coupled to the AC interface. An isolation module is coupled between the first conversion module and the second conversion module. The isolation module comprises a transformer and a switching element coupled between the transformer and the second conversion module. The transformer and the switching element are cooperatively configured for a plurality of operating modes, wherein each operating mode of the plurality of operating modes corresponds to a respective turns ratio of the transformer.

  19. Conversion Preliminary Safety Analysis Report for the NIST Research Reactor

    SciTech Connect (OSTI)

    Diamond, D. J.; Baek, J. S.; Hanson, A. L.; Cheng, L-Y; Brown, N.; Cuadra, A.

    2015-01-30

    The NIST Center for Neutron Research (NCNR) is a reactor-laboratory complex providing the National Institute of Standards and Technology (NIST) and the nation with a world-class facility for the performance of neutron-based research. The heart of this facility is the NIST research reactor (aka NBSR); a heavy water moderated and cooled reactor operating at 20 MW. It is fueled with high-enriched uranium (HEU) fuel elements. A Global Threat Reduction Initiative (GTRI) program is underway to convert the reactor to low-enriched uranium (LEU) fuel. This program includes the qualification of the proposed fuel, uranium and molybdenum alloy foil clad in an aluminum alloy, and the development of the fabrication techniques. This report is a preliminary version of the Safety Analysis Report (SAR) that would be submitted to the U.S. Nuclear Regulatory Commission (NRC) for approval prior to conversion. The report follows the recommended format and content from the NRC codified in NUREG-1537, Guidelines for Preparing and Reviewing Applications for the Licensing of Non-power Reactors, Chapter 18, Highly Enriched to Low-Enriched Uranium Conversions. The emphasis in any conversion SAR is to explain the differences between the LEU and HEU cores and to show the acceptability of the new design; there is no need to repeat information regarding the current reactor that will not change upon conversion. Hence, as seen in the report, the bulk of the SAR is devoted to Chapter 4, Reactor Description, and Chapter 13, Safety Analysis.

  20. Process Design and Economics for the Conversion of Algal Biomass...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... advances the state of technology in biomass production, conversion, and sustainability. ... by tracking environmental sustainability metrics for the modeled conversion ...

  1. Workshop on Conversion Technologies for Advanced Biofuels - Bio...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications Conversion Technologies for Advanced Biofuels - Bio-Oil Production Conversion Technologies for Advanced Biofuels - Bio-Oil...

  2. Plasma-Hydrocarbon conversion - Energy Innovation Portal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Hydrocarbon conversion Idaho National Laboratory Contact INL About This Technology Technology Marketing Summary INL's Plasma-Hydrocarbon Conversion process enables conversion of heavy hydrocarbons, such as heavy crude oil and hydrocarbon gases like natural gas, into lighter hydrocarbon materials (e.g. synthetic light oil). Description It can convert hydrocarbon gases to liquid fuels/chemicals. The dielectric barrier discharge plasma process that adds carbon and hydrogen simultaneously to heavy

  3. Energy Conversion Devices | Open Energy Information

    Open Energy Info (EERE)

    Type Test & Evaluation Partner Partnering Center within NREL National Center for Photovoltaics Partnership Year 2003 Energy Conversion Devices is a company located in Rochester...

  4. Molecular catalytic coal liquid conversion. Quarterly report...

    Office of Scientific and Technical Information (OSTI)

    report Citation Details In-Document Search Title: Molecular catalytic coal liquid conversion. Quarterly report You are accessing a document from the Department of Energy's (DOE)...

  5. Molecular catalytic coal liquid conversion. Quarterly status...

    Office of Scientific and Technical Information (OSTI)

    report Citation Details In-Document Search Title: Molecular catalytic coal liquid conversion. Quarterly status report In this Quarter, the research was focused continually on the...

  6. Molecular catalytic coal liquid conversion. Quarterly status...

    Office of Scientific and Technical Information (OSTI)

    July--September 1995 Citation Details In-Document Search Title: Molecular catalytic coal liquid conversion. Quarterly status report, July--September 1995 The research was...

  7. Molecular catalytic coal liquid conversion. Quarterly report...

    Office of Scientific and Technical Information (OSTI)

    October--December 1994 Citation Details In-Document Search Title: Molecular catalytic coal liquid conversion. Quarterly report, October--December 1994 You are accessing a...

  8. Molecular catalytic coal liquid conversion. Quarterly status...

    Office of Scientific and Technical Information (OSTI)

    July--September 1995 Citation Details In-Document Search Title: Molecular catalytic coal liquid conversion. Quarterly status report, July--September 1995 You are accessing...

  9. Molecular catalytic coal liquid conversion. Quarterly report...

    Office of Scientific and Technical Information (OSTI)

    October--December 1994 Citation Details In-Document Search Title: Molecular catalytic coal liquid conversion. Quarterly report, October--December 1994 In this Quarter, the...

  10. Molecular catalytic coal liquid conversion. Quarterly report...

    Office of Scientific and Technical Information (OSTI)

    report Citation Details In-Document Search Title: Molecular catalytic coal liquid conversion. Quarterly report In this Quarter, the research was focused continually on the two...

  11. Molecular catalytic coal liquid conversion. Quarterly status...

    Office of Scientific and Technical Information (OSTI)

    report Citation Details In-Document Search Title: Molecular catalytic coal liquid conversion. Quarterly status report You are accessing a document from the Department of...

  12. Project Profile: Brayton Solar Power Conversion System

    Office of Energy Efficiency and Renewable Energy (EERE)

    Brayton Energy, under the CSP R&D FOA, is looking to demonstrate the viability and economics of a new concentrating solar thermal power conversion system.

  13. MHK technologies include current energy conversion

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    e.g., hydrokinetic turbines that extract power from water currents (riverine, tidal, and ocean) and wave energy conversion (WEC) devices that extract power from wave motion. ...

  14. "Fundamental Challenges in Solar Energy Conversion" workshop...

    Office of Science (SC) Website

    Fundamental Challenges in Solar Energy Conversion" workshop hosted by LMI-EFRC Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events ...

  15. "Approaches to Ultrahigh Efficiency Solar Energy Conversion"...

    Office of Science (SC) Website

    "Approaches to Ultrahigh Efficiency Solar Energy Conversion" Webinar Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News ...

  16. The Southern California Conversion Technology Demonstration Project...

    Open Energy Info (EERE)

    Conversion Technology Demonstration Project Sector: Energy, Land Focus Area: - Waste to Energy Phase: Create a Vision Resource Type: Publications User Interface: Website...

  17. DOE Issues Request for Quotations for Depleted Uranium Hexafluoride Conversion Technical Services

    Broader source: Energy.gov [DOE]

    Cincinnati – The U.S. Department of Energy (DOE) today issued a Request for Quotation (RFQ) for engineering and operations technical services to support the Portsmouth Paducah Project Office and the oversight of operations of the Depleted Uranium Hexafluoride (DUF6) Conversion Project located in Paducah KY, and Portsmouth OH.

  18. Photonic Crystals for Enhancing Thermophotovoltaic Energy Conversion

    SciTech Connect (OSTI)

    LIN, SHAWN-YU; FLEMING, JAMES G.; MORENO, JOSEPH A.

    2003-03-01

    Thermophotovoltaics (TPV) converts the radiant energy of a thermal source into electrical energy using photovoltaic cells. TPV has a number of attractive features, including: fuel versatility (nuclear, fossil, solar, etc.), quiet operation, low maintenance, low emissions, light weight, high power density, modularity, and possibility for cogeneration of heat and electricity. Some of these features are highly attractive for military applications (Navy and Army). TPV could also be used for distributed power and automotive applications wherever fuel cells, microturbines, or cogeneration are presently being considered if the efficiencies could be raised to around 30%. This proposal primarily examine approaches to improving the radiative efficiency. The ideal irradiance for the PV cell is monochromatic illumination at the bandgap. The photonic crystal approach allows for the tailoring of thermal emission spectral bandwidth at specific wavelengths of interest. The experimental realization of metallic photonic crystal structures, the optical transmission, reflection and absorption characterization of it have all been carried out in detail and will be presented next. Additionally, comprehensive models of TPV conversion has been developed and applied to the metallic photonic crystal system.

  19. Conversion and enrichment in the Soviet Union

    SciTech Connect (OSTI)

    1991-04-01

    In the Soviet Union, just as in the West, the civilian nuclear industry emerged from research work undertaken for nuclear weapons development. At first, researchers tried various techniques for physical separation of uranium isotopes: electromagnetic and molecular-kinetic thermo-diffusion methods; gaseous diffusion; and centrifuge methods. All of those methods, which are based primarily on differences in the atomic mass of uranium isotopes, called for extensive research and the development of new, technically unprecedented equipment. Gradually gaseous diffusion and gas centrifuge technology became recognized as most feasible for industrial use, so research on other methods was terminated. Industrial-scale uranium enrichment in the Soviet Union began in 1949 using the gaseous diffusion method; by the early 1960s, centrifuge technology was in use on an industrial scale. All Soviet production of highly-enriched, weapons-grade uranium was halted in 1987. The Soviet Union now has four enrichment plants in operation (at classified locations), solely for civilian nuclear power needs. All four enrichment plants have centrifuge modules, and enrichment provided by gaseous diffusion accounts for less than 5% of their total output. Two of the four enrichment plants also incorporate facilities for conversion to uranium hexafluoride (UF{sub 6}).

  20. Garbage to hydrocarbon fuel conversion system

    SciTech Connect (OSTI)

    Gould, W.A.

    1986-07-15

    A garbage to hydrocarbon fuel conversion system is described which consists of: (a) a source of combustible garbage; (b) means for pulverizing the garbage; (c) a furnace to burn the garbage; (d) means for transporting the pulverized garbage to the furnace which comprises a motor operated worm feed automatic stoker; (e) a steam generating coil inside the furnace which supplies live steam to power a turbine which in turn powers an alternating current generator; and a condenser which returns remaining the steam to a liquid state for re-circulation through the steam generating coils; (f) means for collecting incompletely combusted waste gases from the furnace; precipitating out dust and light oil for re-combustion in the furnace; and, extracting hydrocarbon gas; where in the means for precipitating out dust and light oil for re-combustion in the furnace comprise a cottrell precipitator wherein oil from an external source is mixed with fine dust received from the exhaust port, wherein an electrostatic charge helps to precipitate the dust; a dust and light oil mixer which provides a homogeneous mixture; and, an oil burner mounted to the furnace whose heat output is supplied to the furnace to add energy thereto; and (g) means for burning trapped heavy gases and removing waste ash from the furnace for disposal.

  1. SPEAR Operations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Operations SPEAR Status SPEAR Status SPEAR Status Web Message Management (authorized access only) ED's stuff Run statistic (preliminary and unofficial) Training Sessions 10/20/03 rev-3 The schedule of talks listed below have a machine operations focus and are intended for operators, physicists and support personnel who will participate in SPEAR3 commissioning and operation. The talks are video taped and stored in the control room along with any pertinent hardcopies for future reference. Date

  2. Conversion of Waste CO2 and Shale Gas to High-Value Chemicals | Department

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

    of Energy Conversion of Waste CO2 and Shale Gas to High-Value Chemicals Conversion of Waste CO2 and Shale Gas to High-Value Chemicals The project aims to develop, build, operate, and validate a laboratory-scale continuous process that converts waste CO2 from industrial sources from shale gas into commodity chemical intermediates. PDF icon Factsheet More Documents & Publications CX-010693: Categorical Exclusion Determination AMO PEER REVIEW, MAY 28-29, 2015 Waste Treatment and

  3. Conversion of Coal Mine Gas to LNG (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Conversion of Coal Mine Gas to LNG Citation Details In-Document Search Title: Conversion of Coal Mine Gas to LNG This project evolved from a 1995, DOE-NETL competitive solicitation for practical CMM capture and utilization concepts. Appalachian Pacific was one of three companies selected to proceed with the construction and operation of a cost-shared demonstration plant. In the course of trying to proceed with this demonstration plant, AP examined several liquefaction technologies, discussed

  4. Thermophotovoltaic conversion using selective infrared line emitters and large band gap photovoltaic devices

    DOE Patents [OSTI]

    Brandhorst, Jr., Henry W. (Auburn, AL); Chen, Zheng (Auburn, AL)

    2000-01-01

    Efficient thermophotovoltaic conversion can be performed using photovoltaic devices with a band gap in the 0.75-1.4 electron volt range, and selective infrared emitters chosen from among the rare earth oxides which are thermally stimulated to emit infrared radiation whose energy very largely corresponds to the aforementioned band gap. It is possible to use thermovoltaic devices operating at relatively high temperatures, up to about 300.degree. C., without seriously impairing the efficiency of energy conversion.

  5. Planning Document for an NBSR Conversion Safety Analysis Report

    SciTech Connect (OSTI)

    Diamond D. J.; Baek J.; Hanson, A.L.; Cheng, L-Y.; Brown, N.; Cuadra, A.

    2013-09-25

    The NIST Center for Neutron Research (NCNR) is a reactor-laboratory complex providing the National Institute of Standards and Technology (NIST) and the nation with a world-class facility for the performance of neutron-based research. The heart of this facility is the National Bureau of Standards Reactor (NBSR). The NBSR is a heavy water moderated and cooled reactor operating at 20 MW. It is fueled with high-enriched uranium (HEU) fuel elements. A Global Threat Reduction Initiative (GTRI) program is underway to convert the reactor to low-enriched uranium (LEU) fuel. This program includes the qualification of the proposed fuel, uranium and molybdenum alloy foil clad in an aluminum alloy, and the development of the fabrication techniques. This report is a planning document for the conversion Safety Analysis Report (SAR) that would be submitted to, and approved by, the Nuclear Regulatory Commission (NRC) before the reactor could be converted.This report follows the recommended format and content from the NRC codified in NUREG-1537, Guidelines for Preparing and Reviewing Applications for the Licensing of Non-power Reactors, Chapter 18, Highly Enriched to Low-Enriched Uranium Conversions. The emphasis herein is on the SAR chapters that require significant changes as a result of conversion, primarily Chapter 4, Reactor Description, and Chapter 13, Safety Analysis. The document provides information on the proposed design for the LEU fuel elements and identifies what information is still missing. This document is intended to assist ongoing fuel development efforts, and to provide a platform for the development of the final conversion SAR. This report contributes directly to the reactor conversion pillar of the GTRI program, but also acts as a boundary condition for the fuel development and fuel fabrication pillars.

  6. Interdigitated photovoltaic power conversion device

    DOE Patents [OSTI]

    Ward, James Scott (Englewood, CO); Wanlass, Mark Woodbury (Golden, CO); Gessert, Timothy Arthur (Conifer, CO)

    1999-01-01

    A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact grid of one cell to the back contact grid of an adjacent cell at the top surface of the device.

  7. Interdigitated photovoltaic power conversion device

    DOE Patents [OSTI]

    Ward, J.S.; Wanlass, M.W.; Gessert, T.A.

    1999-04-27

    A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact grid of one cell to the back contact grid of an adjacent cell at the top surface of the device. 15 figs.

  8. Biomass thermal conversion research at SERI

    SciTech Connect (OSTI)

    Milne, T. A.; Desrosiers, R. E.; Reed, T. B.

    1980-09-01

    SERI's involvement in the thermochemical conversion of biomass to fuels and chemicals is reviewed. The scope and activities of the Biomass Thermal Conversion and Exploratory Branch are reviewed. The current status and future plans for three tasks are presented: (1) Pyrolysis Mechanisms; (2) High Pressure O/sub 2/ Gasifier; and (3) Gasification Test Facility.

  9. Challenges and Opportunities in Thermoelectric Energy Conversion |

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

    Department of Energy Energy Conversion Challenges and Opportunities in Thermoelectric Energy Conversion 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Lawrence Berkeley Laboratory PDF icon 2004_deer_majumdar.pdf More Documents & Publications High performance Zintl phase TE materials with embedded nanoparticles High performance Zintl phase TE materials with embedded nanoparticles Recent Device Developments with Advanced Bulk Thermoelectric Materials

  10. 1982 annual report: Biomass Thermochemical Conversion Program

    SciTech Connect (OSTI)

    Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

    1983-01-01

    This report provides a brief overview of the Thermochemical Conversion Program's activities and major accomplishments during fiscal year 1982. The objective of the Biomass Thermochemical Conversion Program is to generate scientific data and fundamental biomass converison process information that, in the long term, could lead to establishment of cost effective processes for conversion of biomass resources into clean fuels and petrochemical substitutes. The goal of the program is to improve the data base for biomass conversion by investigating the fundamental aspects of conversion technologies and exploring those parameters which are critical to these conversion processes. To achieve this objective and goal, the Thermochemical Conversion Program is sponsoring high-risk, long-term research with high payoff potential which industry is not currently sponsoring, nor is likely to support. Thermochemical conversion processes employ elevated temperatures to convert biomass materials into energy. Process examples include: combustion to produce heat, steam, electricity, direct mechanical power; gasification to produce fuel gas or synthesis gases for the production of methanol and hydrocarbon fuels; direct liquefaction to produce heavy oils or distillates; and pyrolysis to produce a mixture of oils, fuel gases, and char. A bibliography of publications for 1982 is included.

  11. Operational Excellence

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Operational Excellence /about/_assets/images/icon-70th.jpg Operational Excellence The Lab's mission is to develop and apply science and technology to ensure the safety, security, and reliability of the U.S. nuclear deterrent; reduce global threats; and solve other emerging national security and energy challenges. aeiral shot of los alamos, new mexico What Los Alamos gets done as a premier national security science laboratory depends on how we do it The Laboratory's operations and business

  12. operations center

    National Nuclear Security Administration (NNSA)

    servers and other critical Operations Center equipment

  13. Independent air supply system filtered to protect against biological and radiological agents (99.7%).
  14. <...

  15. Energy conversion & storage program. 1994 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1995-04-01

    The Energy Conversion and Storage Program investigates state-of-the-art electrochemistry, chemistry, and materials science technologies for: (1) development of high-performance rechargeable batteries and fuel cells; (2) development of high-efficiency thermochemical processes for energy conversion; (3) characterization of complex chemical processes and chemical species; (4) study and application of novel materials for energy conversion and transmission. Research projects focus on transport process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis.

  16. Energy Conversion & Storage Program, 1993 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1994-06-01

    The Energy Conversion and Storage Program applies chemistry and materials science principles to solve problems in: production of new synthetic fuels; development of high-performance rechargeable batteries and fuel cells; development of high-efficiency thermochemical processes for energy conversion; characterization of complex chemical processes and chemical species; and the study and application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis.

  17. Proceedings of the 31. intersociety energy conversion engineering

    Office of Scientific and Technical Information (OSTI)

    conference. Volume 2: Conversion technologies, electro-chemical technologies, Stirling engines, thermal management (Conference) | SciTech Connect Proceedings of the 31. intersociety energy conversion engineering conference. Volume 2: Conversion technologies, electro-chemical technologies, Stirling engines, thermal management Citation Details In-Document Search Title: Proceedings of the 31. intersociety energy conversion engineering conference. Volume 2: Conversion technologies,

  18. Emery Station Operations Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Emery Station Operations Center

  19. CONVERSION EXTRACTION DESULFURIZATION (CED) PHASE III

    SciTech Connect (OSTI)

    James Boltz

    2005-03-01

    This project was undertaken to refine the Conversion Extraction Desulfurization (CED) technology to efficiently and economically remove sulfur from diesel fuel to levels below 15-ppm. CED is considered a generic term covering all desulfurization processes that involve oxidation and extraction. The CED process first extracts a fraction of the sulfur from the diesel, then selectively oxidizes the remaining sulfur compounds, and finally extracts these oxidized materials. The Department of Energy (DOE) awarded Petro Star Inc. a contract to fund Phase III of the CED process development. Phase III consisted of testing a continuous-flow process, optimization of the process steps, design of a pilot plant, and completion of a market study for licensing the process. Petro Star and the Degussa Corporation in coordination with Koch Modular Process Systems (KMPS) tested six key process steps in a 7.6-centimeter (cm) (3.0-inch) inside diameter (ID) column at gas oil feed rates of 7.8 to 93.3 liters per hour (l/h) (2.1 to 24.6 gallons per hour). The team verified the technical feasibility with respect to hydraulics for each unit operation tested and successfully demonstrated pre-extraction and solvent recovery distillation. Test operations conducted at KMPS demonstrated that the oxidation reaction converted a maximum of 97% of the thiophenes. The CED Process Development Team demonstrated that CED technology is capable of reducing the sulfur content of light atmospheric gas oil from 5,000-ppm to less than 15-ppm within the laboratory scale. In continuous flow trials, the CED process consistently produced fuel with approximately 20-ppm of sulfur. The process economics study calculated an estimated process cost of $5.70 per product barrel. The Kline Company performed a marketing study to evaluate the possibility of licensing the CED technology. Kline concluded that only 13 refineries harbored opportunity for the CED process. The Kline study and the research team's discussions with prospective refineries led to the conclusion that there were not likely prospects for the licensing of the CED process.

  20. Methane Gas Conversion Property Tax Exemption

    Broader source: Energy.gov [DOE]

    Under Iowa's methane gas conversion property tax exemption, real and personal property used to decompose waste and convert the waste to gas, collect the methane or other gases, convert the gas to...

  21. Hybrid staging of geothermal energy conversion process

    SciTech Connect (OSTI)

    Steidel, R.F. Jr.

    1984-05-07

    Progress in the demonstration of the feasibility of hybrid staging in geothermal energy conversion is described, particularly processes involving the Lysholm engine. The performance limitations of the Lysholm engine were studied. (MHR)

  22. Summer Series 2012 - Conversation with Kathy Yelick

    ScienceCinema (OSTI)

    Yelick, Kathy

    2013-06-24

    Jeff Miller, head of Public Affairs, sat down in conversation with Kathy Yelick, Associate Berkeley Lab Director, Computing Sciences, in the second of a series of "powerpoint-free" talks on July 18th 2012, at Berkeley Lab.

  1. Summer Series 2012 - Conversation with Omar Yaghi

    ScienceCinema (OSTI)

    Omar Yaghi

    2013-06-24

    Jeff Miller, head of Public Affairs, sat down in conversation with Omar Yaghi, director of the Molecular Foundry, in the first of a series of "powerpoint-free" talks on July 11th 2012, at Berkeley Lab.

  2. Biomass Feedstock and Conversion Supply System Design and Analysis

    SciTech Connect (OSTI)

    Jacob J. Jacobson; Mohammad S. Roni; Patrick Lamers; Kara G. Cafferty

    2014-09-01

    Idaho National Laboratory (INL) supports the U.S. Department of Energy’s bioenergy research program. As part of the research program INL investigates the feedstock logistics economics and sustainability of these fuels. A series of reports were published between 2000 and 2013 to demonstrate the feedstock logistics cost. Those reports were tailored to specific feedstock and conversion process. Although those reports are different in terms of conversion, some of the process in the feedstock logistic are same for each conversion process. As a result, each report has similar information. A single report can be designed that could bring all commonality occurred in the feedstock logistics process while discussing the feedstock logistics cost for different conversion process. Therefore, this report is designed in such a way that it can capture different feedstock logistics cost while eliminating the need of writing a conversion specific design report. Previous work established the current costs based on conventional equipment and processes. The 2012 programmatic target was to demonstrate a delivered biomass logistics cost of $55/dry ton for woody biomass delivered to fast pyrolysis conversion facility. The goal was achieved by applying field and process demonstration unit-scale data from harvest, collection, storage, preprocessing, handling, and transportation operations into INL’s biomass logistics model. The goal of the 2017 Design Case is to enable expansion of biofuels production beyond highly productive resource areas by breaking the reliance of cost-competitive biofuel production on a single, low-cost feedstock. The 2017 programmatic target is to supply feedstock to the conversion facility that meets the in-feed conversion process quality specifications at a total logistics cost of $80/dry T. The $80/dry T. target encompasses total delivered feedstock cost, including both grower payment and logistics costs, while meeting all conversion in-feed quality targets. The 2012 $55/dry T. programmatic target included only logistics costs with a limited focus on biomass quantity, quality and did not include a grower payment. The 2017 Design Case explores two approaches to addressing the logistics challenge: one is an agronomic solution based on blending and integrated landscape management and the second is a logistics solution based on distributed biomass preprocessing depots. The concept behind blended feedstocks and integrated landscape management is to gain access to more regional feedstock at lower access fees (i.e., grower payment) and to reduce preprocessing costs by blending high quality feedstocks with marginal quality feedstocks. Blending has been used in the grain industry for a long time; however, the concept of blended feedstocks in the biofuel industry is a relatively new concept. The blended feedstock strategy relies on the availability of multiple feedstock sources that are blended using a least-cost formulation within an economical supply radius, which, in turn, decreases the grower payment by reducing the amount of any single biomass. This report will introduce the concepts of blending and integrated landscape management and justify their importance in meeting the 2017 programmatic goals.

  3. Thermochemical Conversion - Biorefinery Integration | Department of Energy

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

    - Biorefinery Integration Thermochemical Conversion - Biorefinery Integration Fuels Synthesis Fuels can be produced from bio-oils using processes similar to those found in a petroleum refinery, including hydrotreating and hydrocracking to create green gasoline, an alternative to alcohol-based ethanol fuels. Some types of bio-oils can even be fully integrated into petroleum refining stream and infrastructure. The conversion of biomass derived syngas to products is typically an exothermic process,

  4. Thermochemical Conversion Processes | Department of Energy

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

    Processes Thermochemical Conversion Processes Gasification In gasification conversion, lignocellulosic feedstocks such as wood and forest products are broken down to synthesis gas, primarily carbon monoxide and hydrogen, using heat. The feedstock is then partially oxidized, or reformed with a gasifying agent (air, oxygen, or steam), which produces synthesis gas (syngas). The makeup of syngas will vary due to the different types of feedstocks, their moisture content, the type of gasifier used,

  5. thermo-electric power conversion technology

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    thermo-electric power conversion technology - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste

  6. NREL: Biomass Research - Biochemical Conversion Projects

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Biochemical Conversion Projects A photo of a woman looking at the underside of a clear plastic tray. The tray has a grid of small holes to hold sample tubes. An NREL researcher examines a sample tray used in the BioScreen C, an instrument used to monitor the growth of microorganisms under different conditions. NREL's projects in biochemical conversion involve three basic steps to convert biomass feedstocks to fuels: Converting biomass to sugar or other fermentation feedstock Fermenting these

  7. Operating Costs

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1997-03-28

    This chapter is focused on capital costs for conventional construction and environmental restoration and waste management projects and examines operating cost estimates to verify that all elements of the project have been considered and properly estimated.

  8. Alternative Fuels Data Center: Flexible Fuel Vehicle Conversions

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Conversions to someone by E-mail Share Alternative Fuels Data Center: Flexible Fuel Vehicle Conversions on Facebook Tweet about Alternative Fuels Data Center: Flexible Fuel Vehicle Conversions on Twitter Bookmark Alternative Fuels Data Center: Flexible Fuel Vehicle Conversions on Google Bookmark Alternative Fuels Data Center: Flexible Fuel Vehicle Conversions on Delicious Rank Alternative Fuels Data Center: Flexible Fuel Vehicle Conversions on Digg Find More places to share Alternative Fuels

  9. Alternative Fuels Data Center: Natural Gas Vehicle Conversions

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Conversions to someone by E-mail Share Alternative Fuels Data Center: Natural Gas Vehicle Conversions on Facebook Tweet about Alternative Fuels Data Center: Natural Gas Vehicle Conversions on Twitter Bookmark Alternative Fuels Data Center: Natural Gas Vehicle Conversions on Google Bookmark Alternative Fuels Data Center: Natural Gas Vehicle Conversions on Delicious Rank Alternative Fuels Data Center: Natural Gas Vehicle Conversions on Digg Find More places to share Alternative Fuels Data Center:

  10. Environmental review for the conversion of Bellefonte Nuclear Plant to fossil fuel

    SciTech Connect (OSTI)

    Carter, R.; Rucker, H.; Summers, R.

    1998-07-01

    The Tennessee Valley Authority recently issued for public review a Draft Environmental Impact Statement for the conversion of the unfinished Bellefonte Nuclear Plant to fossil fuel. The DEIS was structured to support three tiers of decision making. Tier 1 is to decide between the No-Action Alternative, which is to leave Bellefonte as a partially completed nuclear plant into the indefinite future, and the Proposed Action Alternative, which is to proceed with converting Bellefonte to fossil fuel. Tier 2 is to select one of five conversion options. In the DEIS, TVA indicated no preference among the five competing fossil conversion options. The five conversion pathways would fully repower the plant consistent with fossil fuel availability, would use commercially ready systems and technologies and be designed to fully utilize the capacity of transmission lines serving Bellefonte. Conversion options addressed were pulverized coal (PC), natural gas combined cycle (NGCC), integrated gasification combined cycle (IGCC), IGCC with joint production of electricity and chemicals, and an option, which combines elements of NGCC and IGCC with coproduction. Tier 3 involves decisions about eight sub-option choices, basically types of processes, equipment, and modes of operation, which is part of two or more conversion options. An example of a sub-option choice would be the type of gasifier that would be used in conversion options involving coal or petroleum coke gasification. Other sub-option choices addressed in the DEIS were natural gas pipeline corridors; fuels, feedstocks, and by-products transportation modes; types of combustion turbines; solid fuels; types of boilers for conventional coal-fired options; chemical production mixes; and modes of onsite solid fuel conveyance. The impact of constructing and operating each proposed fossil conversion option at Bellefonte were evaluated for 18 environmental resource and economic categories.

  11. University of Delaware Institute of Energy Conversion | Open...

    Open Energy Info (EERE)

    Institute of Energy Conversion Jump to: navigation, search Name: University of Delaware Institute of Energy Conversion Place: Delaware Product: String representation "University...

  12. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    Conversion of Waste Heat to Electricity in an IC Engine-Powered Vehicle Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle...

  13. Conversations and Connections - The Expertise of our Small Business...

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

    Conversations and Connections - The Expertise of our Small Business Program Managers Conversations and Connections - The Expertise of our Small Business Program Managers August 20, ...

  14. Penrose Landfill Gas Conversion LLC | Open Energy Information

    Open Energy Info (EERE)

    Page Edit with form History Penrose Landfill Gas Conversion LLC Jump to: navigation, search Name: Penrose Landfill Gas Conversion LLC Place: Los Angeles, California Product: Owner...

  15. Guidelines for Conversion of Diesel Buses to Compressed Natural...

    Open Energy Info (EERE)

    Conversion of Diesel Buses to Compressed Natural Gas Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Guidelines for Conversion of Diesel Buses to Compressed Natural Gas...

  16. MHK Technologies/Mobil Stabilized Energy Conversion Platform...

    Open Energy Info (EERE)

    Mobil Stabilized Energy Conversion Platform < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Mobil Stabilized Energy Conversion Platform.jpg...

  17. Conversion and Resource Evaluation Ltd CARE | Open Energy Information

    Open Energy Info (EERE)

    is an independent company providing specialist technical and economic services in the bio-energy and waste conversion sector. References: Conversion and Resource Evaluation Ltd...

  18. Novel Energy Conversion Equipment for Low Temperature Geothermal...

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

    Novel Energy Conversion Equipment for Low Temperature Geothermal Resources Novel Energy Conversion Equipment for Low Temperature Geothermal Resources Project objective: Develop ...

  19. Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion...

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

    High-Temperature Bulk Thermoelectric Energy Conversion for Efficient Automotive Waste Heat Recovery Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion for ...

  20. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    Thermoelectric Systems Implemented in a Hybrid Configuration Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of ...

  1. 2011 Biomass Program Platform Peer Review: Thermochemical Conversion...

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

    Thermochemical Conversion 2011 Biomass Program Platform Peer Review: Thermochemical ... experts at the U.S. Department of Energy Biomass Programs Thermochemical Conversion ...

  2. 2011 Biomass Program Platform Peer Review: Biochemical Conversion...

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

    Biochemical Conversion 2011 Biomass Program Platform Peer Review: Biochemical Conversion ... experts at the U.S. Department of Energy Biomass Program's Biochemical Platform Review ...

  3. Biological Conversion of Sugars to Hydrocarbons Technology Pathway...

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

    Biological Conversion of Sugars to Hydrocarbons Technology Pathway This technology pathway case investigates the biological conversion of biomass-derived sugars to hydrocarbon ...

  4. Conversion Technologies for Advanced Biofuels - Bio-Oil Production...

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

    Oil Production Conversion Technologies for Advanced Biofuels - Bio-Oil Production RTI International report-out at the CTAB webinar on Conversion Technologies for Advanced Biofuels...

  5. Molecular catalytic coal liquid conversion (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Conference: Molecular catalytic coal liquid conversion Citation Details In-Document Search Title: Molecular catalytic coal liquid conversion This research, which is relevant to the...

  6. Molecular catalytic coal liquid conversion (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Conference: Molecular catalytic coal liquid conversion Citation Details In-Document Search Title: Molecular catalytic coal liquid conversion You are accessing a document from...

  7. Golden Fuel Systems formerly Greasel Conversions Inc | Open Energy...

    Open Energy Info (EERE)

    Fuel Systems formerly Greasel Conversions Inc Jump to: navigation, search Name: Golden Fuel Systems (formerly Greasel Conversions Inc) Place: Drury, Montana Zip: 65638 Sector:...

  8. Novel Vertimass Catalyst for Conversion of Ethanol and Other...

    Office of Environmental Management (EM)

    Novel Vertimass Catalyst for Conversion of Ethanol and Other Alcohols into Fungible Gasoline, Jet, and Diesel Fuel Blend Stocks Novel Vertimass Catalyst for Conversion of Ethanol...

  9. Engineering Nanocrystals for Energy Conversion and Storage, and...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Engineering Nanocrystals for Energy Conversion and Storage, and Sensors Citation Details In-Document Search Title: Engineering Nanocrystals for Energy Conversion ...

  10. Global Waste to Energy Conversion Company GWECC | Open Energy...

    Open Energy Info (EERE)

    Waste to Energy Conversion Company GWECC Jump to: navigation, search Name: Global Waste to Energy Conversion Company (GWECC) Place: Washington, DC Product: GWECC is a global...

  11. SCE Societe de Conversion d Energie | Open Energy Information

    Open Energy Info (EERE)

    Societe de Conversion d Energie Jump to: navigation, search Name: SCE Societe de Conversion d'Energie Place: Reunion Island, France Product: PV project developer on Reunion Island,...

  12. Depleted Uranium Hexafluoride (DUF6) Fully Operational at the Portsmouth

    Office of Environmental Management (EM)

    and Paducah Gaseous Diffusion Sites | Department of Energy Depleted Uranium Hexafluoride (DUF6) Fully Operational at the Portsmouth and Paducah Gaseous Diffusion Sites Depleted Uranium Hexafluoride (DUF6) Fully Operational at the Portsmouth and Paducah Gaseous Diffusion Sites October 20, 2011 - 9:16am Addthis When Babcock & Wilcox Conversion Services took over the DUF6 Project on March 29 of this year, the company had one thing in mind: Bring all seven conversion lines at both plants to

  13. Wind energy conversion system analysis model (WECSAM) computer program documentation

    SciTech Connect (OSTI)

    Downey, W T; Hendrick, P L

    1982-07-01

    Described is a computer-based wind energy conversion system analysis model (WECSAM) developed to predict the technical and economic performance of wind energy conversion systems (WECS). The model is written in CDC FORTRAN V. The version described accesses a data base containing wind resource data, application loads, WECS performance characteristics, utility rates, state taxes, and state subsidies for a six state region (Minnesota, Michigan, Wisconsin, Illinois, Ohio, and Indiana). The model is designed for analysis at the county level. The computer model includes a technical performance module and an economic evaluation module. The modules can be run separately or together. The model can be run for any single user-selected county within the region or looped automatically through all counties within the region. In addition, the model has a restart capability that allows the user to modify any data-base value written to a scratch file prior to the technical or economic evaluation. Thus, any user-supplied data for WECS performance, application load, utility rates, or wind resource may be entered into the scratch file to override the default data-base value. After the model and the inputs required from the user and derived from the data base are described, the model output and the various output options that can be exercised by the user are detailed. The general operation is set forth and suggestions are made for efficient modes of operation. Sample listings of various input, output, and data-base files are appended. (LEW)

  14. Efficient electrochemical CO2 conversion powered by renewable energy

    SciTech Connect (OSTI)

    Kauffman, Douglas R.; Thakkar, Jay; Siva, Rajan; Matranga, Christopher; Ohodnicki, Paul R.; Zeng, Chenjie; Jin, Rongchao

    2015-06-29

    The catalytic conversion of CO2 into industrially relevant chemicals is one strategy for mitigating greenhouse gas emissions. Along these lines, electrochemical CO2 conversion technologies are attractive because they can operate with high reaction rates at ambient conditions. However, electrochemical systems require electricity, and CO2 conversion processes must integrate with carbon-free, renewable-energy sources to be viable on larger scales. We utilize Au25 nanoclusters as renewably powered CO2 conversion electrocatalysts with CO2 → CO reaction rates between 400 and 800 L of CO2 per gram of catalytic metal per hour and product selectivities between 80 and 95%. These performance metrics correspond to conversion rates approaching 0.8–1.6 kg of CO2 per gram of catalytic metal per hour. We also present data showing CO2 conversion rates and product selectivity strongly depend on catalyst loading. Optimized systems demonstrate stable operation and reaction turnover numbers (TONs) approaching 6 × 106 mol CO2 molcatalyst–1 during a multiday (36 hours total hours) CO2electrolysis experiment containing multiple start/stop cycles. TONs between 1 × 106 and 4 × 106 molCO2 molcatalyst–1 were obtained when our system was powered by consumer-grade renewable-energy sources. Daytime photovoltaic-powered CO2 conversion was demonstrated for 12 h and we mimicked low-light or nighttime operation for 24 h with a solar-rechargeable battery. This proof-of-principle study provides some of the initial performance data necessary for assessing the scalability and technical viability of electrochemical CO2 conversion technologies. Specifically, we show the following: (1) all electrochemical CO2 conversion systems will produce a net increase in CO2 emissions if they do not integrate with renewable-energy sources, (2) catalyst loading vs activity trends can be used to tune process rates and product distributions, and (3) state-of-the-art renewable-energy technologies are sufficient to power larger-scale, tonne per day CO2 conversion systems.

  15. Feedstock Supply System Design and Economics for Conversion of Lignocellulosic Biomass to Hydrocarbon Fuels: Conversion Pathway: Biological Conversion of Sugars to Hydrocarbons The 2017 Design Case

    SciTech Connect (OSTI)

    Kevin Kenney; Kara G. Cafferty; Jacob J. Jacobson; Ian J Bonner; Garold L. Gresham; William A. Smith; David N. Thompson; Vicki S. Thompson; Jaya Shankar Tumuluru; Neal Yancey

    2013-09-01

    The U.S. Department of Energy promotes the production of a range of liquid fuels and fuel blendstocks from lignocellulosic biomass feedstocks by funding fundamental and applied research that advances the state of technology in biomass collection, conversion, and sustainability. As part of its involvement in this program, the Idaho National Laboratory (INL) investigates the feedstock logistics economics and sustainability of these fuels. Between 2000 and 2012, INL conducted a campaign to quantify the economics and sustainability of moving biomass from standing in the field or stand to the throat of the biomass conversion process. The goal of this program was to establish the current costs based on conventional equipment and processes, design improvements to the current system, and to mark annual improvements based on higher efficiencies or better designs. The 2012 programmatic target was to demonstrate a delivered biomass logistics cost of $35/dry ton. This goal was successfully achieved in 2012 by implementing field and process demonstration unit-scale data from harvest, collection, storage, preprocessing, handling, and transportation operations into INL’s biomass logistics model. Looking forward to 2017, the programmatic target is to supply biomass to the conversion facilities at a total cost of $80/dry ton and on specification with in-feed requirements. The goal of the 2017 Design Case is to enable expansion of biofuels production beyond highly productive resource areas by breaking the reliance of cost-competitive biofuel production on a single, abundant, low-cost feedstock. If this goal is not achieved, biofuel plants are destined to be small and/or clustered in select regions of the country that have a lock on low-cost feedstock. To put the 2017 cost target into perspective of past accomplishments of the cellulosic ethanol pathway, the $80 target encompasses total delivered feedstock cost, including both grower payment and logistics costs, while meeting all conversion in-feed quality targets. The 2012 $35 programmatic target included only logistics costs with a limited focus on biomass quality

  16. Energy conversion & storage program. 1995 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1996-06-01

    The 1995 annual report discusses laboratory activities in the Energy Conversion and Storage (EC&S) Program. The report is divided into three categories: electrochemistry, chemical applications, and material applications. Research performed in each category during 1995 is described. Specific research topics relate to the development of high-performance rechargeable batteries and fuel cells, the development of high-efficiency thermochemical processes for energy conversion, the characterization of new chemical processes and complex chemical species, and the study and application of novel materials related to energy conversion and transmission. Research projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials and deposition technologies, and advanced methods of analysis.

  17. Fossil fuel conversion--measurement and modeling

    SciTech Connect (OSTI)

    Solomon, P.R.; Smoot, L.D.; Serio, M.A.; Hamblen, D.G.; Brewster, B.S.; Radulovic, P.T.

    1994-10-01

    The main objective of this program is to understand the chemical and physical mechanisms in coal conversion processes and incorporate this knowledge in computer-aided reactor engineering technology for the purposes of development, evaluation, design, scale-up, simulation, control and feedstock evaluation in advanced coal conversion devices. To accomplish this objective, this program will: (1) provide critical data on the physical and chemical processes in fossil fuel gasifiers and combustors; (2) further develop a set of comprehensive codes; and (3) apply these codes to model various types of combustors and gasifiers (fixed-bed, transport reactor, and fluidized-bed for coal and gas turbines for natural gas).

  18. Lower Hybrid to Whistler Wave Conversion

    SciTech Connect (OSTI)

    Winske, Dan

    2012-07-16

    In this presentation we discuss recent work concerning the conversion of whistler waves to lower hybrid waves (as well as the inverse process). These efforts have been motivated by the issue of attenuation of upward propagating whistler waves in the ionosphere generated by VLF transmitters on the ground, i.e., the 'Starks 20 db' problem, which affects the lifetimes of energetic electrons trapped in the geomagnetic field at low magnetic altitude (L). We discuss recent fluid and kinetic plasma simulations as well as ongoing experiments at UCLA to quantify linear and nonlinear mode conversion of lower hybrid to whistler waves.

  19. DUF6 Conversion | Department of Energy

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

    Services » PPPO Cleanup Projects - Portsmouth, Paducah, & DUF6 » DUF6 Conversion DUF6 Conversion DUF6 Facility at the Paducah Site DUF6 Facility at the Paducah Site DUF6 Facility at the Portsmouth Site DUF6 Facility at the Portsmouth Site There are more than 63,000 cylinders filled with DUF6 stored in cylinder yards at the Paducah and Portsmouth Sites. There are more than 63,000 cylinders filled with DUF6 stored in cylinder yards at the Paducah and Portsmouth Sites. DUF6 cylinder

  20. Operating Strategies

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Operating Strategies and Design Recommendations for Mitigating Local Damage Effects in Offshore Turbine Blades Phillip W. Richards phillip@gatech.edu Graduate Research Assistant Daniel Guggenheim School of Aerospace Engineering Atlanta, Georgia, USA D. Todd Griffith dgriffi@sandia.gov Principal Member of the Technical Staff Sandia National Laboratories Albuquerque, New Mexico, USA Dewey H. Hodges dhodges@gatech.edu Professor Daniel Guggenheim School of Aerospace Engineering Atlanta, Georgia, USA

  1. Air pollution control technology for municipal solid waste-to-energy conversion facilities: capabilities and research needs

    SciTech Connect (OSTI)

    Lynch, J F; Young, J C

    1980-09-01

    Three major categories of waste-to-energy conversion processes in full-scale operation or advanced demonstration stages in the US are co-combustion, mass incineration, and pyrolysis. These methods are described and some information on US conversion facilities is tabulated. Conclusions and recommendations dealing with the operation, performance, and research needs for these facilities are given. Section II identifies research needs concerning air pollution aspects of the waste-to-energy processes and reviews significant operating and research findings for the co-combustion, mass incinceration, and pyrolysis waste-to-energy systems.

  2. Ocean Thermal Energy Conversion (OTEC) Programmatic Environmental Analysis--Appendices

    SciTech Connect (OSTI)

    Authors, Various

    1980-01-01

    The programmatic environmental analysis is an initial assessment of Ocean Thermal Energy Conversion (OTEC) technology considering development, demonstration and commercialization. It is concluded that the OTEC development program should continue because the development, demonstration, and commercialization on a single-plant deployment basis should not present significant environmental impacts. However, several areas within the OTEC program require further investigation in order to assess the potential for environmental impacts from OTEC operation, particularly in large-scale deployments and in defining alternatives to closed-cycle biofouling control: (1) Larger-scale deployments of OTEC clusters or parks require further investigations in order to assess optimal platform siting distances necessary to minimize adverse environmental impacts. (2) The deployment and operation of the preoperational platform (OTEC-1) and future demonstration platforms must be carefully monitored to refine environmental assessment predictions, and to provide design modifications which may mitigate or reduce environmental impacts for larger-scale operations. These platforms will provide a valuable opportunity to fully evaluate the intake and discharge configurations, biofouling control methods, and both short-term and long-term environmental effects associated with platform operations. (3) Successful development of OTEC technology to use the maximal resource capabilities and to minimize environmental effects will require a concerted environmental management program, encompassing many different disciplines and environmental specialties. This volume contains these appendices: Appendix A -- Deployment Scenario; Appendix B -- OTEC Regional Characterization; and Appendix C -- Impact and Related Calculations.

  3. Photovoltaic Cell Conversion Efficiency Basics | Department of Energy

    Energy Savers [EERE]

    Conversion Efficiency Basics Photovoltaic Cell Conversion Efficiency Basics August 20, 2013 - 2:58pm Addthis The conversion efficiency of a photovoltaic (PV) cell, or solar cell, is the percentage of the solar energy shining on a PV device that is converted into electrical energy, or electricity. Improving this conversion efficiency is a key goal of research and helps make PV technologies cost-competitive with more traditional sources of energy. Factors Affecting Conversion Efficiency Much of

  4. Alternative Fuels Data Center: Ethanol Flexible Fuel Vehicle Conversions

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Ethanol Flexible Fuel Vehicle Conversions to someone by E-mail Share Alternative Fuels Data Center: Ethanol Flexible Fuel Vehicle Conversions on Facebook Tweet about Alternative Fuels Data Center: Ethanol Flexible Fuel Vehicle Conversions on Twitter Bookmark Alternative Fuels Data Center: Ethanol Flexible Fuel Vehicle Conversions on Google Bookmark Alternative Fuels Data Center: Ethanol Flexible Fuel Vehicle Conversions on Delicious Rank Alternative Fuels Data Center: Ethanol Flexible Fuel

  5. 2009 Biochemical Conversion Platform Review Report

    SciTech Connect (OSTI)

    Ferrell, John

    2009-12-01

    This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the U.S. Department of Energy Biomass Programs Biochemical Conversion platform review meeting, held on April 14-16, 2009, at the Sheraton Denver Downtown, Denver, Colorado.

  6. 2009 Thermochemical Conversion Platform Review Report

    SciTech Connect (OSTI)

    Ferrell, John

    2009-12-01

    This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the U.S. Department of Energy Biomass Programs Thermochemical Conversion platform review meeting, held on April 14-16, 2009, at the Sheraton Denver Downtown, Denver, Colorado.

  7. Operations Office

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (~ii~,Richland Operations Office ~Z4TESO~Richland, Washington 99352 SEP 2 2009 CERTIFIED MAIL Ms. Sarah Washburn Heart of America Northwest 1314 N.E. 5 6 th Street Suite 100 Seattle, Washington 98105 Dear Ms. Washburn: FREEDOM OF INFORMATION ACT REQUEST (FOI 2009-0067) You requested, pursuant to the Freedom of Information Act (FOJA), the following documents relating to: 1 . "The authorization, decision to use, and actual use of any and all pesticides and herbicides anywhere within the

  8. Fuel Economy and Emissions of a Vehicle Equipped with an Aftermarket Flexible-Fuel Conversion Kit

    SciTech Connect (OSTI)

    Thomas, John F; Huff, Shean P; West, Brian H

    2012-04-01

    The U.S. Environmental Protection Agency (EPA) grants Certificates of Conformity for alternative fuel conversion systems and also offers other forms of premarket registration of conversion kits for use in vehicles more than two model years old. Use of alternative fuels such as ethanol, natural gas, and propane are encouraged by the Energy Policy Act of 1992. Several original equipment manufacturers (OEMs) produce emissions-certified vehicles capable of using alternative fuels, and several alternative fuel conversion system manufacturers produce EPA-approved conversion systems for a variety of alternative fuels and vehicle types. To date, only one manufacturer (Flex Fuel U.S.) has received EPA certifications for ethanol fuel (E85) conversion kits. This report details an independent evaluation of a vehicle with a legal installation of a Flex Fuel U.S. conversion kit. A 2006 Dodge Charger was baseline tested with ethanol-free certification gasoline (E0) and E20 (gasoline with 20 vol % ethanol), converted to flex-fuel operation via installation of a Flex Box Smart Kit from Flex Fuel U.S., and retested with E0, E20, E50, and E81. Test cycles included the Federal Test Procedure (FTP or city cycle), the highway fuel economy test (HFET), and the US06 test (aggressive driving test). Averaged test results show that the vehicle was emissions compliant on E0 in the OEM condition (before conversion) and compliant on all test fuels after conversion. Average nitrogen oxide (NOx) emissions exceeded the Tier 2/Bin 5 intermediate life NO{sub X} standard with E20 fuel in the OEM condition due to two of three test results exceeding this standard [note that E20 is not a legal fuel for non-flexible-fuel vehicles (non-FFVs)]. In addition, one E0 test result before conversion and one E20 test result after conversion exceeded the NOX standard, although the average result in these two cases was below the standard. Emissions of ethanol and acetaldehyde increased with increasing ethanol, while nonmethane organic gas and CO emissions remained relatively unchanged for all fuels and cycles. Higher fraction ethanol blends appeared to decrease NO{sub X} emissions on the FTP and HFET (after conversion). As expected, fuel economy (miles per gallon) decreased with increasing ethanol content in all cases.

  9. Alternative fuel information: Facts about CNG and LPG conversion

    SciTech Connect (OSTI)

    O`Connor, K.

    1994-06-01

    As new environmental and energy related laws begin to take effect, increasing numbers of alternative fuel vehicles (AFVs) will be required in federal, state, municipal, and private fleets across the country. The National Energy Policy Act of 1992 and the Clean Air Act Amendments of 1990, along with several new state and local laws, will require fleet managers to either purchase original equipment manufacturer (OEM) vehicles, which are produced by automakers, or convert existing vehicles to run on alternative fuels. Because there is a limited availability and selection of OEM vehicles, conversions are seen as a transition to the time when automakers will produce more AFVs for public sale. A converted vehicle is any vehicle that originally was designed to operate on gasoline, and has been altered to run on an alternative fuel such as compressed natural gas (CNG) or propane (liquefied petroleum gas -- LPG), the two most common types of fuel conversions. In the United States, more than 25,000 vehicles already have been converted to COG, and 300,000 have been converted to LPG.

  10. Alkali metal recovery from carbonaceous material conversion process

    DOE Patents [OSTI]

    Sharp, David W. (Seabrook, TX); Clavenna, LeRoy R. (Baytown, TX); Gorbaty, Martin L. (Fanwood, NJ); Tsou, Joe M. (Galveston, TX)

    1980-01-01

    In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkali metal residues are produced in the gasifier or similar reaction zone, alkali metal constitutents are recovered from the particles by withdrawing and passing the particles from the reaction zone to an alkali metal recovery zone in the substantial absence of molecular oxygen and treating the particles in the recovery zone with water or an aqueous solution in the substantial absence of molecular oxygen. The solution formed by treating the particles in the recovery zone will contain water-soluble alkali metal constituents and is recycled to the conversion process where the alkali metal constituents serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. Preventing contact of the particles with oxygen as they are withdrawn from the reaction zone and during treatment in the recovery zone avoids the formation of undesirable alkali metal constituents in the aqueous solution produced in the recovery zone and insures maximum recovery of water-soluble alkali metal constituents from the alkali metal residues.

  11. Design Construction and Operation of a Supercritical Carbon Dioxide (sCO2) Loop for Investigation of Dry Cooling and Natural Circulation Potential for Use in Advanced Small Modular Reactors Utilizing sCO2 Power Conversion Cycles.

    SciTech Connect (OSTI)

    Middleton, Bobby D.; Rodriguez, Salvador B.; Carlson, Matthew David

    2015-11-01

    This report outlines the work completed for a Laboratory Directed Research and Development project at Sandia National Laboratories from October 2012 through September 2015. An experimental supercritical carbon dioxide (sCO 2 ) loop was designed, built, and o perated. The experimental work demonstrated that sCO 2 can be uti lized as the working fluid in an air - cooled, natural circulation configuration to transfer heat from a source to the ultimate heat sink, which is the surrounding ambient environment in most ca ses. The loop was also operated in an induction - heated, water - cooled configuration that allows for measurements of physical parameters that are difficult to isolate in the air - cooled configuration. Analysis included the development of two computational flu id dynamics models. Future work is anticipated to answer questions that were not covered in this project.

  12. Syngas Conversion to Hydrocarbon Fuels through Mixed Alcohol Intermediates

    SciTech Connect (OSTI)

    Dagle, Robert A.; Lebarbier, Vanessa M.; Albrecht, Karl O.; Li, Jinjing; Taylor, Charles E.; Bao, Xinhe; Wang, Yong

    2013-05-13

    Synthesis gas (syngas) can be used to synthesize a variety of fuels and chemicals. Domestic transportation and military operational interests have driven continued focus on domestic syngas-based fuels production. Liquid transportation fuels may be made from syngas via four basic processes: 1) higher alcohols, 2) Fischer-Tropsch (FT), 3) methanol-to-gasoline (MTG), and 4) methanol-to-olefins (MTO) and olefins-to-gasoline/distillate (MOGD). Compared to FT and higher alcohols, MTG and MTO-MOGD have received less attention in recent years. Due to the high capital cost of these synthetic fuel plants, the production cost of the finished fuel cannot compete with petroleum-derived fuel. Pacific Northwest National Laboratory has recently evaluated one way to potentially reduce capital cost and overall production cost for MTG by combining the methanol and MTG syntheses in a single reactor. The concept consists of mixing the conventional MTG catalyst (i.e. HZSM-5) with an alcohol synthesis catalyst. It was found that a methanol synthesis catalyst, stable at high temperature (i.e. Pd/ZnO/Al2O3) [1], when mixed with ZSM-5, was active for syngas conversion. Relatively high syngas conversion can be achieved as the equilibrium-driven conversion limitations for methanol and dimethyl ether are removed as they are intermediates to the final hydrocarbon product. However, selectivity control was difficult to achieve as formation of undesirable durene and light hydrocarbons was problematic [2]. The objective of the present study was thus to evaluate other potential composite catalyst systems and optimize the reactions conditions for the conversion of syngas to hydrocarbon fuels, through the use of mixed alcohol intermediates. Mixed alcohols are of interest as they have recently been reported to produce higher yields of gasoline compared to methanol [3]. 1. Lebarbier, V.M., Dagle, R.A., Kovarik, L., Lizarazo-Adarme, J.A., King, D.L., Palo, D.R., Catalyst Science & Technology, 2012, 2, 2116-2127. 2. Zhu, Y., Jones, S.B., Biddy, M.J., Dagle, R.A., Palo, D.P., Bioresource Technology, 2012, 117, 341-351. 3. Gujar, A.C., Guda, V.K., Nolan, M., Yan W., Toghiani, H., White, M.G., Applied Catalysis A: General, 2009, 363, 115-121.

  13. OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT

    SciTech Connect (OSTI)

    Sands, M.Dale

    1980-08-01

    Significant acccrmplishments in Ocean Thermal Energy Conversion (OTEC) technology have increased the probability of producing OTEC-derived power within this decade with subsequent large scale commercialization following by the turn of the century. Under U.S. Department of Energy funding, the Oceanic Engineering Operations of Interstate Electronics Corporation has prepared several OTEC Environmental Assessments over the past years, in particular, the OTEC Programmatic Environmental Assessment. The Programmatic EA considers several technological designs (open- and closed-cycle), plant configuratlons (land-based, moored, and plant-ship), and power usages (baseload electricity, ammonia and aluminum production). Potential environmental impacts, health and safetv issues and a status update of the institutional issues as they influence OTEC deployments, are included.

  14. EIS-0360: Depleted Uranium Oxide Conversion Product at the Portsmouth, Ohio Site

    Broader source: Energy.gov [DOE]

    This site-specific EIS analyzes the construction, operation, maintenance, and decontamination and decommissioning of the proposed depleted uranium hexafluoride (DUF6) conversion facility at three alternative locations within the Paducah site; transportation of all cylinders (DUF6, enriched, and empty) currently stored at the East Tennessee Technology Park (ETTP) near Oak Ridge, Tennessee, to Portsmouth; construction of a new cylinder storage yard at Portsmouth (if required) for ETTP cylinders; transportation of depleted uranium conversion products and waste materials to a disposal facility; transportation and sale of the hydrogen fluoride (HF) produced as a conversion coproduct; and neutralization of HF to calcium fluoride and its sale or disposal in the event that the HF product is not sold.

  15. Energy Conversion, an Energy Frontier Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Director's Letter .................. 2 Research ............................. 3 Seminar Series ................. 11 Awards .............................. 12 S p r I N g 2 0 1 1 Intermediate Band Solar Energy Conversion in ZnTe:O and ZnTe/ZnSe Affordable photovoltaic solar cells are highly desirable for achieving a sustainable and renewable energy source. In order for solar energy to become cost-competitive with fossil fuels, technological breakthroughs are needed to both improve solar cell

  16. Direct conversion of algal biomass to biofuel

    SciTech Connect (OSTI)

    Deng, Shuguang; Patil, Prafulla D; Gude, Veera Gnaneswar

    2014-10-14

    A method and system for providing direct conversion of algal biomass. Optionally, the method and system can be used to directly convert dry algal biomass to biodiesels under microwave irradiation by combining the reaction and combining steps. Alternatively, wet algae can be directly processed and converted to fatty acid methyl esters, which have the major components of biodiesels, by reacting with methanol at predetermined pressure and temperature ranges.

  17. Thermochemical Conversion Proceeses to Aviation Fuels

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

    1 Program Name or Ancillary Text eere.energy.gov Advanced Bio-basedJet Fuel Cost of Production Workshop Thermochemical Conversion Processes to Aviation Fuels John Holladay (PNNL) November 27, 2012 Energy Efficiency & Renewable Energy eere.energy.gov 2 * Building on the Approach previously described by Mary * Syngas routes from alcohols (sans Fischer-Tropsch) * Pyrolysis approaches (Lignocellulosics) - Fast Pyrolysis - Catalytic Fast Pyrolysis (in situ and ex situ) * Pyrolysis approaches

  18. Flexible Conversion Ratio Fast Reactor Systems Evaluation

    SciTech Connect (OSTI)

    Neil Todreas; Pavel Hejzlar

    2008-06-30

    Conceptual designs of lead-cooled and liquid salt-cooled fast flexible conversion ratio reactors were developed. Both concepts have cores reated at 2400 MWt placed in a large-pool-type vessel with dual-free level, which also contains four intermediate heat exchanges coupling a primary coolant to a compact and efficient supercritical CO2 Brayton cycle power conversion system. Decay heat is removed passively using an enhanced Reactor Vessel Auxiliary Cooling System and a Passive Secondary Auxiliary Cooling System. The most important findings were that (1) it is feasible to design the lead-cooled and salt-cooled reactor with the flexible conversion ratio (CR) in the range of CR=0 and CR=1 n a manner that achieves inherent reactor shutdown in unprotected accidents, (2) the salt-cooled reactor requires Lithium thermal Expansion Modules to overcme the inherent salt coolant's large positive coolant temperature reactivity coefficient, (3) the preferable salt for fast spectrum high power density cores is NaCl-Kcl-MgCl2 as opposed to fluoride salts due to its better themal-hydraulic and neutronic characteristics, and (4) both reactor, but attain power density 3 times smaller than that of the sodium-cooled reactor.

  19. Derivation of dose conversion factors for tritium

    SciTech Connect (OSTI)

    Killough, G. G.

    1982-03-01

    For a given intake mode (ingestion, inhalation, absorption through the skin), a dose conversion factor (DCF) is the committed dose equivalent to a specified organ of an individual per unit intake of a radionuclide. One also may consider the effective dose commitment per unit intake, which is a weighted average of organ-specific DCFs, with weights proportional to risks associated with stochastic radiation-induced fatal health effects, as defined by Publication 26 of the International Commission on Radiological Protection (ICRP). This report derives and tabulates organ-specific dose conversion factors and the effective dose commitment per unit intake of tritium. These factors are based on a steady-state model of hydrogen in the tissues of ICRP's Reference Man (ICRP Publication 23) and equilibrium of specific activities between body water and other tissues. The results differ by 27 to 33% from the estimate on which ICRP Publication 30 recommendations are based. The report also examines a dynamic model of tritium retention in body water, mineral bone, and two compartments representing organically-bound hydrogen. This model is compared with data from human subjects who were observed for extended periods. The manner of combining the dose conversion factors with measured or model-predicted levels of contamination in man's exposure media (air, drinking water, soil moisture) to estimate dose rate to an individual is briefly discussed.

  20. Task 3.3: Warm Syngas Cleanup and Catalytic Processes for Syngas Conversion to Fuels Subtask 3: Advanced Syngas Conversion to Fuels

    SciTech Connect (OSTI)

    Lebarbier Dagel, Vanessa M.; Li, J.; Taylor, Charles E.; Wang, Yong; Dagle, Robert A.; Deshmane, Chinmay A.; Bao, Xinhe

    2014-03-31

    This collaborative joint research project is in the area of advanced gasification and conversion, within the Chinese Academy of Sciences (CAS)-National Energy Technology Laboratory (NETL)-Pacific Northwest National Laboratory (PNNL) Memorandum of Understanding. The goal for this subtask is the development of advanced syngas conversion technologies. Two areas of investigation were evaluated: Sorption-Enhanced Synthetic Natural Gas Production from Syngas The conversion of synthetic gas (syngas) to synthetic natural gas (SNG) is typically catalyzed by nickel catalysts performed at moderate temperatures (275 to 325C). The reaction is highly exothermic and substantial heat is liberated, which can lead to process thermal imbalance and destruction of the catalyst. As a result, conversion per pass is typically limited, and substantial syngas recycle is employed. Commercial methanation catalysts and processes have been developed by Haldor Topsoe, and in some reports, they have indicated that there is a need and opportunity for thermally more robust methanation catalysts to allow for higher per-pass conversion in methanation units. SNG process requires the syngas feed with a higher H2/CO ratio than typically produced from gasification processes. Therefore, the water-gas shift reaction (WGS) will be required to tailor the H2/CO ratio. Integration with CO2 separation could potentially eliminate the need for a separate WGS unit, thereby integrating WGS, methanation, and CO2 capture into one single unit operation and, consequently, leading to improved process efficiency. The SNG process also has the benefit of producing a product stream with high CO2 concentrations, which makes CO2 separation more readily achievable. The use of either adsorbents or membranes that selectively separate the CO2 from the H2 and CO would shift the methanation reaction (by driving WGS for hydrogen production) and greatly improve the overall efficiency and economics of the process. The scope of this activity was to develop methods and enabling materials for syngas conversion to SNG with readily CO2 separation. Suitable methanation catalyst and CO2 sorbent materials were developed. Successful proof-of-concept for the combined reaction-sorption process was demonstrated, which culminated in a research publication. With successful demonstration, a decision was made to switch focus to an area of fuels research of more interest to all three research institutions (CAS-NETL-PNNL). Syngas-to-Hydrocarbon Fuels through Higher Alcohol Intermediates There are two types of processes in syngas conversion to fuels that are attracting R&D interest: 1) syngas conversion to mixed alcohols; and 2) syngas conversion to gasoline via the methanol-to-gasoline process developed by Exxon-Mobil in the 1970s. The focus of this task was to develop a one-step conversion technology by effectively incorporating both processes, which is expected to reduce the capital and operational cost associated with the conversion of coal-derived syngas to liquid fuels. It should be noted that this work did not further study the classic Fischer-Tropsch reaction pathway. Rather, we focused on the studies for unique catalyst pathways that involve the direct liquid fuel synthesis enabled by oxygenated intermediates. Recent advances made in the area of higher alcohol synthesis including the novel catalytic composite materials recently developed by CAS using base metal catalysts were used.

  1. Calutron Operations | Y-12 National Security Complex

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Operations Calutron Operations

  2. Solar energy conversion via hot electron internal photoemission in metallic nanostructures: Efficiency estimates

    SciTech Connect (OSTI)

    Leenheer, Andrew J.; Narang, Prineha; Atwater, Harry A.; Lewis, Nathan S.

    2014-04-07

    Collection of hot electrons generated by the efficient absorption of light in metallic nanostructures, in contact with semiconductor substrates can provide a basis for the construction of solar energy-conversion devices. Herein, we evaluate theoretically the energy-conversion efficiency of systems that rely on internal photoemission processes at metal-semiconductor Schottky-barrier diodes. In this theory, the current-voltage characteristics are given by the internal photoemission yield as well as by the thermionic dark current over a varied-energy barrier height. The Fowler model, in all cases, predicts solar energy-conversion efficiencies of <1% for such systems. However, relaxation of the assumptions regarding constraints on the escape cone and momentum conservation at the interface yields solar energy-conversion efficiencies as high as 1%10%, under some assumed (albeit optimistic) operating conditions. Under these conditions, the energy-conversion efficiency is mainly limited by the thermionic dark current, the distribution of hot electron energies, and hot-electron momentum considerations.

  3. Integration of Feedstock Assembly System and Cellulosic Ethanol Conversion Models to Analyze Bioenergy System Performance

    SciTech Connect (OSTI)

    Jared M. Abodeely; Douglas S. McCorkle; Kenneth M. Bryden; David J. Muth; Daniel Wendt; Kevin Kenney

    2010-09-01

    Research barriers continue to exist in all phases of the emerging cellulosic ethanol biorefining industry. These barriers include the identification and development of a sustainable and abundant biomass feedstock, the assembly of viable assembly systems formatting the feedstock and moving it from the field (e.g., the forest) to the biorefinery, and improving conversion technologies. Each of these phases of cellulosic ethanol production are fundamentally connected, but computational tools used to support and inform analysis within each phase remain largely disparate. This paper discusses the integration of a feedstock assembly system modeling toolkit and an Aspen Plus conversion process model. Many important biomass feedstock characteristics, such as composition, moisture, particle size and distribution, ash content, etc. are impacted and most effectively managed within the assembly system, but generally come at an economic cost. This integration of the assembly system and the conversion process modeling tools will facilitate a seamless investigation of the assembly system conversion process interface. Through the integrated framework, the user can design the assembly system for a particular biorefinery by specifying location, feedstock, equipment, and unit operation specifications. The assembly system modeling toolkit then provides economic valuation, and detailed biomass feedstock composition and formatting information. This data is seamlessly and dynamically used to run the Aspen Plus conversion process model. The model can then be used to investigate the design of systems for cellulosic ethanol production from field to final product.

  4. Site Specific Coal Conversion | netl.doe.gov

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Site Specific Coal Conversion The Site Specific Coal Conversion Key Technology will include less mature R&D and case-specific engineering and construction and balance of plant R&D ...

  5. Thermoelectrici Conversion of Waste Heat to Electricity in an...

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

    Thermoelectrici Conversion of Waste Heat to Electricity in an IC Engine-Powered Vehicle Thermoelectrici Conversion of Waste Heat to Electricity in an IC Engine-Powered Vehicle 2005...

  6. PG to Glycerin - Lessons Learned on Antifreeze System Conversions...

    Energy Savers [EERE]

    PG to Glycerin - Lessons Learned on Antifreeze System Conversions at Y-12 PG to Glycerin - Lessons Learned on Antifreeze System Conversions at Y-12 May 5, 2015 Presenter: Jacob...

  7. DOE Publishes GATEWAY Report on Portland's LED Streetlight Conversion...

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

    Portland's LED Streetlight Conversion DOE Publishes GATEWAY Report on Portland's LED Streetlight Conversion October 5, 2015 - 11:08am Addthis The U.S. Department of Energy has ...

  8. Integrating and Piloting Lignocellulose Biomass Conversion Technology (Presentation)

    SciTech Connect (OSTI)

    Schell, D. J.

    2009-06-15

    Presentation on NREL's integrated biomass conversion capabilities. Presented at the 2009 Advanced Biofuels Workshop in Denver, CO, Cellulosic Ethanol session.

  9. DOE Technical Targets for Hydrogen Production from Microbial Biomass Conversion

    Broader source: Energy.gov [DOE]

    This table lists the U.S. Department of Energy (DOE) technical targets for hydrogen production from microbial biomass conversion.

  10. Process Design and Economics for the Conversion of Lignocellulosic Biomass

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

    to Hydrocarbons: Dilute-Acid and Enzymatic Deconstruction of Biomass to Sugars and Biological Conversion of Sugars to Hydrocarbons | Department of Energy the Conversion of Lignocellulosic Biomass to Hydrocarbons: Dilute-Acid and Enzymatic Deconstruction of Biomass to Sugars and Biological Conversion of Sugars to Hydrocarbons Process Design and Economics for the Conversion of Lignocellulosic Biomass to Hydrocarbons: Dilute-Acid and Enzymatic Deconstruction of Biomass to Sugars and Biological

  11. Workshop on Conversion Technologies for Advanced Biofuels - Carbohydra...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications Conversion Technologies for Advanced Biofuels - Carbohydrates Production Innovative Topics for Advanced Biofuels Cross-cutting...

  12. Thermoelectrici Conversion of Waste Heat to Electricity in an IC

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

    Engine-Powered Vehicle | Department of Energy Thermoelectrici Conversion of Waste Heat to Electricity in an IC Engine-Powered Vehicle Thermoelectrici Conversion of Waste Heat to Electricity in an IC Engine-Powered Vehicle 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters PDF icon 2005_deer_schock.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Waste Heat

  13. Conversion Technologies for Advanced Biofuels - Bio-Oil Production |

    Office of Environmental Management (EM)

    Department of Energy Oil Production Conversion Technologies for Advanced Biofuels - Bio-Oil Production RTI International report-out at the CTAB webinar on Conversion Technologies for Advanced Biofuels - Bio-Oil Production. PDF icon ctab_webinar_bio_oils_production.pdf More Documents & Publications Conversion Technologies for Advanced Biofuels - Bio-Oil Upgrading Workshop on Conversion Technologies for Advanced Biofuels - Bio-Oils

  14. 2009 Biochemical Conversion Platform Review Report | Department of Energy

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

    Biochemical Conversion Platform Review Report 2009 Biochemical Conversion Platform Review Report This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the U.S. Department of Energy Biomass Program's Biochemical Conversion platform review meeting, held on April 14-16, 2009, at the Sheraton Denver Downtown, Denver, Colorado. PDF icon obp_biochem_conversion_platform_review_2009.pdf More Documents & Publications 2009 Thermochemical

  15. 2009 Thermochemical Conversion Platform Review Report | Department of

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

    Energy Thermochemical Conversion Platform Review Report 2009 Thermochemical Conversion Platform Review Report This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the U.S. Department of Energy Biomass Programs Thermochemical Conversion platform review meeting, held on April 14-16, 2009, at the Sheraton Denver Downtown, Denver, Colorado. PDF icon obp_thermochem_conversion_platform_review_2009.pdf More Documents &

  16. 2015 Peer Review Presentations-Biochemical Conversion | Department of

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

    Energy Biochemical Conversion 2015 Peer Review Presentations-Biochemical Conversion The Bioenergy Technologies Office hosted its 2015 Project Peer Review on March 23-27, 2015, at the Hilton Mark Center in Alexandria, Virginia. The presentations from the biochemical conversion sessions are available to view and download below. For detailed session descriptions and presentation titles, view the 2015 Project Peer Review Program Booklet. PDF icon biochemical_conversion_nagle_0110.pdf PDF icon

  17. Compressed natural gas and liquefied petroleum gas conversions: The National Renewable Energy Laboratory`s experience

    SciTech Connect (OSTI)

    Motta, R.C.; Kelly, K.J.; Warnock, W.W.

    1996-04-01

    The National Renewable Energy Laboratory (NREL) contracted with conversion companies in six states to convert approximately 900 light-duty Federal fleet vehicles to operate on compressed natural gas (CNG) or liquefied petroleum gas (LPG). The contracts were initiated in order to help the Federal government meet the vehicle acquisition requirements of the Energy Policy Act of 1992 (EPACT) during a period of limited original equipment manufacturer (OEM) model availability. Approximately 90% of all conversions were performed on compact of full-size vans and pickups, and 90% of the conversions were to bi-fuel operation. With a positive response from the fleet managers, this program helped the Federal government meet the vehicle acquisition requirements of EPACT for fiscal years 1993 and 1994, despite limited OEM model availability. The conversions also helped to establish the infrastructure needed to support further growth in the use of alternative fuel vehicles. In conclusion, the program has been successful in helping the Federal government meet the vehicle acquisition requirements of EPACT, establishing infrastructure, increasing the displacement of imported oil, and evaluating the emissions performance of converted vehicles. With the relatively widespread availability of OEM vehicles in the 1996 model year, the program is now being phased out.

  18. Method for conversion of .beta.-hydroxy carbonyl compounds

    DOE Patents [OSTI]

    Lilga, Michael A. (Richland, WA); White, James F. (Richland, WA); Holladay, Johnathan E. (Kennewick, WA); Zacher, Alan H. (Kennewick, WA); Muzatko, Danielle S. (Kennewick, WA); Orth, Rick J. (Kennewick, WA)

    2010-03-30

    A process is disclosed for conversion of salts of .beta.-hydroxy carbonyl compounds forming useful conversion products including, e.g., .alpha.,.beta.-unsaturated carbonyl compounds and/or salts of .alpha.,.beta.-unsaturated carbonyl compounds. Conversion products find use, e.g., as feedstock and/or end-use chemicals.

  19. Conversion Technologies for Advanced Biofuels - Bio-Oil Upgrading |

    Office of Environmental Management (EM)

    Department of Energy Oil Upgrading Conversion Technologies for Advanced Biofuels - Bio-Oil Upgrading PNNL report-out at the CTAB webinar on Bio-Oil Upgrading. PDF icon ctab_webinar_bio_oils_upgrading.pdf More Documents & Publications Conversion Technologies for Advanced Biofuels - Bio-Oil Production Thermochemical Conversion Proceeses to Aviation Fuels

  20. DUF6 Operations

    Broader source: Energy.gov [DOE]

    The DUF6 conversion process involves five parts – cylinder recycling, vaporization, conversion, oxide powder handling, and hydrofluoric acid recovery system. The process results in two products, uranium oxide and hydrofluoric acid. The oxide is stored for eventual disposal or reuse, and the HF is sold for industrial applications.

  1. MINING NUCLEAR TRANSIENT DATA THROUGH SYMBOLIC CONVERSION

    SciTech Connect (OSTI)

    Diego MAndelli; Tunc Aldemir; Alper Yilmaz; Curtis Smith

    2013-09-01

    Dynamic Probabilistic Risk Assessment (DPRA) methodologies generate enormous amounts of data for a very large number of simulations. The data contain temporal information of both the state variables of the simulator and the temporal status of specific systems/components. In order to measure system performances, limitations and resilience, such data need to be carefully analyzed with the objective of discovering the correlations between sequence/timing of events and system dynamics. A first approach toward discovering these correlations from data generated by DPRA methodologies has been performed by organizing scenarios into groups using classification or clustering based algorithms. The identification of the correlations between system dynamics and timing/sequencing of events is performed by observing the temporal distribution of these events in each group of scenarios. Instead of performing a posteriori analysis of these correlations, this paper shows how it is possible to identify the correlations implicitly by performing a symbolic conversion of both continuous (temporal profiles of simulator state variables) and discrete (status of systems and components) data. Symbolic conversion is performed for each simulation by properly quantizing both continuous and discrete data and then converting them as a series of symbols. After merging both series together, a temporal phrase is obtained. This phrase preserves duration, coincidence and sequence of both continuous and discrete data in a uniform and consistent manner. In this paper it is also shown that by using specific distance measures, it is still possible to post-process such symbolic data using clustering and classification techniques but in considerably less time since the memory needed to store the data is greatly reduced by the symbolic conversion.

  2. Ocean Thermal Energy Conversion: An overview

    SciTech Connect (OSTI)

    Not Available

    1989-11-01

    Ocean thermal energy conversion, or OTEC is a technology that extracts power from the ocean's natural thermal gradient. This technology is being pursued by researchers from many nations; in the United States, OTEC research is funded by the US Department of Energy's Ocean Energy Technology program. The program's goal is to develop the technology so that industry can make a competent assessment of its potential -- either as an alternative or as a supplement to conventional energy sources. Federally funded research in components and systems will help OTEC to the threshold of commercialization. This publication provides an overview of the OTEC technology. 47 refs., 25 figs.

  3. Energy conversion device with improved seal

    DOE Patents [OSTI]

    Miller, Gerald R. (Salt Lake City, UT); Virkar, Anil V. (Midvale, UT)

    1980-01-01

    An energy conversion device comprising an improved sealing member adapted to seal a cation-permeable casing to the remainder of the device. The sealing member comprises a metal substrate which (i) bears a nonconductive and corrosion resistant coating on the major surface to which said casing is sealed, and (ii) is corrugated so as to render it flexible, thereby allowing said member to move relative to said casing without cracking the seal therebetween. Corrugations may be circumferential, radial, or both radial and circumferential so as to form dimples. The corrugated member may be in form of a bellows or in a substantially flat form, such as a disc.

  4. 2009 Thermochemical Conversion Platform Review Report

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

    b - Name and Type: PANTONE 2995 C; Angle: 45.000; Lines/Inch: 60.000 - Name and Type: PANTONE 308 C; Angle: 45.000; Lines/Inch: 60.000 - Name and Type: PANTONE 431 C; Angle: 45.000; Lines/Inch: 60.000 BIOMASS PROGRAM December 2009 2009 Thermochemical Conversion Platform Review Report: An Independent Evaluation of Platform Activities for FY 2008 and FY 2009 Executive Summary i This page intentionally left blank ii Dear Colleague: This document summarizes the recommendations and evaluations

  5. Carbon aerogel electrodes for direct energy conversion

    DOE Patents [OSTI]

    Mayer, Steven T. (San Leandro, CA); Kaschmitter, James L. (Pleasanton, CA); Pekala, Richard W. (Pleasant Hill, CA)

    1997-01-01

    A direct energy conversion device, such as a fuel cell, using carbon aerogel electrodes, wherein the carbon aerogel is loaded with a noble catalyst, such as platinum or rhodium and soaked with phosphoric acid, for example. A separator is located between the electrodes, which are placed in a cylinder having plate current collectors positioned adjacent the electrodes and connected to a power supply, and a pair of gas manifolds, containing hydrogen and oxygen positioned adjacent the current collectors. Due to the high surface area and excellent electrical conductivity of carbon aerogels, the problems relative to high polarization resistance of carbon composite electrodes conventionally used in fuel cells are overcome.

  6. Carbon aerogel electrodes for direct energy conversion

    DOE Patents [OSTI]

    Mayer, S.T.; Kaschmitter, J.L.; Pekala, R.W.

    1997-02-11

    A direct energy conversion device, such as a fuel cell, using carbon aerogel electrodes is described, wherein the carbon aerogel is loaded with a noble catalyst, such as platinum or rhodium and soaked with phosphoric acid, for example. A separator is located between the electrodes, which are placed in a cylinder having plate current collectors positioned adjacent the electrodes and connected to a power supply, and a pair of gas manifolds, containing hydrogen and oxygen positioned adjacent the current collectors. Due to the high surface area and excellent electrical conductivity of carbon aerogels, the problems relative to high polarization resistance of carbon composite electrodes conventionally used in fuel cells are overcome. 1 fig.

  7. Conversion of Coal Mine Gas to LNG

    Office of Scientific and Technical Information (OSTI)

    Conversion of Coal Mine Gas to LNG Final Technical Report Reporting Period Start Date Reporting Period End Date Report issued October 01, 2000 March 31, 2013 February 5, 2016 Cooperative Agreement No. DE-FC26-00NT40978 Submitted by: Appalachian-Pacific Coal Mine Methane Power Company 5053 Glenbrook Terrace NW Washington, DC 20016-2602 1 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

  8. NREL: Biomass Research - Thermochemical Conversion Projects

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Thermochemical Conversion Projects A photo of a small room containing a piece of blue metal equipment. Tubes run from the equipment up to the ceiling of the room and connect to pipes that run across the ceiling and down the walls. A man in a blue lab coat and hard hat is working on the pipes on the right wall of the room. Synthesis gas formed during the gasification process must be compressed before it enters the catalytic fuel synthesis reactor. NREL investigates thermochemical processes for

  9. Uranium Mining, Conversion, and Enrichment Industries

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

    Analysis of Potential Impacts of Uranium Transfers on the Domestic Uranium Mining, Conversion, and Enrichment Industries May 1, 2015 ii EXECUTIVE SUMMARY: The Department of Energy ("Department" or "DOE") plans to transfer the equivalent of up to 2,100 metric tons ("MTU") of natural uranium per year (with a higher total for calendar year 2015, mainly because of transfers already executed or under way before today's determination). These transfers would include 1,600

  10. Next-Generation Thermionic Solar Energy Conversion

    Broader source: Energy.gov [DOE]

    This fact sheet describes a next-generation thermionic solar energy conversion project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by Stanford University, seeks to demonstrate the feasibility of photon-enhanced, microfabricated thermionic energy converters as a high-efficiency topping cycle for CSP electricity generation. With the potential to double the electricity output efficiency of solar-thermal power stations, this topping cycle application can significantly reduce the cost of solar-thermal electricity below that of the lowest-cost, fossil-fuel generated electricity.

  11. Battery Chargers | Electrical Power Conversion and Storage

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

    Battery Chargers | Electrical Power Conversion and Storage 625 West A Street | Lincoln, NE 68522-1794 | LesterElectrical.com P: 402.477.8988 | F: 402.441.3727, 402.474.1769 (Sales) MEMORANDUM TO: United States Department of Energy (DOE), Via Email, expartecommunications@hq.doe.gov FROM: Spencer Stock, Product Marketing Manager, Lester Electrical DATE: June 18, 2012 RE: Ex Parte Communications, Docket Number EERE-2008-BT-STD-0005, RIN 1904-AB57 On Monday, June 11, 2012, representatives from

  12. Chemistry of Furan Conversion into Aromatics and Olefins over HZSM-5: A Model Biomass Conversion Reaction

    SciTech Connect (OSTI)

    Cheng, Yu-Ting; Huber, George W.

    2011-06-03

    The conversion of furan (a model of cellulosic biomass) over HZSM-5 was investigated in a thermogravimetric analysismass spectrometry system, in situ Fourier transform infrared analysis, and in a continuous-flow fixed-bed reactor. Furan adsorbed as oligomers at room temperature with a 1.73 of adsorbed furan/Al ratio. These oligomers were polycyclic aromatic compounds that were converted to CO, CO?, aromatics, and olefins at temperatures from 400 to 600 C. Aromatics (e.g., benzene, toluene, and naphthalene), oligomer isomers (e.g., benzofuran, 2,2-methylenebisfuran, and benzodioxane), and heavy oxygenates (C??{sub +} oligomers) were identified as intermediates formed inside HZSM-5 at different reaction temperatures. During furan conversion, graphite-type coke formed on the catalyst surface, which caused the aromatics and olefins formation to deactivate within the first 30 min of time on-stream. We have measured the effects of space velocity and temperature for furan conversion to help us understand the chemistry of biomass conversion inside zeolite catalysts. The major products for furan conversion included CO, CO?, allene, C?C? olefins, benzene, toluene, styrene, benzofuran, indene, and naphthalene. The aromatics (benzene and toluene) and olefins (ethylene and propylene) selectivity decreased with increasing space velocity. Unsaturated hydrocarbons such as allene, cyclopentadiene, and aromatics selectivity increased with increasing space velocity. The product distribution was selective to olefins and CO at high temperatures (650 C) but was selective to aromatics (benzene and toluene) at intermediate temperatures (450600 C). At low temperatures (450 C), benzofuran and coke contributed 60% of the carbon selectivity. Several different reactions were occurring for furan conversion over zeolites. Some important reactions that we have identified in this study include DielsAlder condensation (e.g., two furans form benzofuran and water), decarbonylation (e.g., furan forms CO and allene), oligomerization (allene forms olefins and aromatics plus hydrogen), and alkylation (e.g., furan plus olefins). The product distribution was far from thermodynamic equilibrium.

  13. Draft environmental assessment: Ocean Thermal Energy Conversion (OTEC) Pilot Plants

    SciTech Connect (OSTI)

    Sullivan, S.M.; Sands, M.D.; Donat, J.R.; Jepsen, P.; Smookler, M.; Villa, J.F.

    1981-02-01

    This Environmental Assessment (EA) has been prepared, in accordance with the National Environmental Policy Act of 1969, for the deployment and operation of a commercial 40-Megawatt (MW) Ocean Thermal Energy Conversion (OTEC) Pilot Plant (hereafter called the Pilot Plant). A description of the proposed action is presented, and a generic environment typical of the candidate Pilot Plant siting regions is described. An assessment of the potential environmental impacts associated with the proposed action is given, and the risk of credible accidents and mitigating measures to reduce these risks are considered. The Federal and State plans and policies the proposed action will encompass are described. Alternatives to the proposed action are presented. Appendix A presents the navigation and environmental information contained in the US Coast Pilot for each of the candidate sites; Appendix B provides a brief description of the methods and calculations used in the EA. It is concluded that environmental disturbances associated with Pilot Plant activities could potentially cause significant environmental impacts; however, the magnitude of these potential impacts cannot presently be assessed, due to insufficient engineering and environmental information. A site- and design-specific OTEC Pilot Plant Environmental Impact Statement (EIS) is required to resolve the potentially significant environmental effects associated with Pilot Plant deployment and operation. (WHK)

  14. Impact of HFIR LEU Conversion on Beryllium Reflector Degradation Factors

    SciTech Connect (OSTI)

    Ilas, Dan

    2013-10-01

    An assessment of the impact of low enriched uranium (LEU) conversion on the factors that may cause the degradation of the beryllium reflector is performed for the High Flux Isotope Reactor (HFIR). The computational methods, models, and tools, comparisons with previous work, along with the results obtained are documented and discussed in this report. The report documents the results for the gas and neutronic poison production, and the heating in the beryllium reflector for both the highly enriched uranium (HEU) and LEU HFIR configurations, and discusses the impact that the conversion to LEU may have on these quantities. A time-averaging procedure was developed to calculate the isotopic (gas and poisons) production in reflector. The sensitivity of this approach to different approximations is gauged and documented. The results show that the gas is produced in the beryllium reflector at a total rate of 0.304 g/cycle for the HEU configuration; this rate increases by ~12% for the LEU case. The total tritium production rate in reflector is 0.098 g/cycle for the HEU core and approximately 11% higher for the LEU core. A significant increase (up to ~25%) in the neutronic poisons production in the reflector during the operation cycles is observed for the LEU core, compared to the HEU case, for regions close to the core s horizontal midplane. The poisoning level of the reflector may increase by more than two orders of magnitude during long periods of downtime. The heating rate in the reflector is estimated to be approximately 20% lower for the LEU core than for the HEU core. The decrease is due to a significantly lower contribution of the heating produced by the gamma radiation for the LEU core. Both the isotopic (gas and neutronic poisons) production and the heating rates are spatially non-uniform throughout the beryllium reflector volume. The maximum values typically occur in the removable reflector and close to the midplane.

  15. Process for conversion of light olefins to LPG and aromatics

    SciTech Connect (OSTI)

    Martindale, D.C.; Andermann, R.E.; Mowry, J.R.

    1989-01-03

    A hydrocarbon conversion process is described which comprises passing a hydrocarbon feed stream comprising at least 30 mole percent olefins having 3 to 4 carbon atoms per molecule and also comprising at least 50 mole percent paraffins having 3 to 4 carbon atoms per molecule and containing less than 10 mole percent C/sub 5/-plus hydrocarbons into a catalytic reaction zone operated at low severity conditions and contacting the feed stream with a solid catalyst gallium. A reaction zone effluent stream is produced comprising C/sub 6/-C/sub 8/ aromatic hydrocarbons and C/sub 3/-C/sub 4/ paraffins, with the reaction zone effluent stream containing less than 10 mole percent olefinic hydrocarbons. The low severity conditions include a combination of pressure, feed space velocity and temperature, including a temperature below 425/sup 0/C, which results in a partial conversion of the feed hydrocarbons into aromatic hydrocarbons whereby: (i) when the effluent is separated there are produced a first product stream, which first product stream is rich in C/sub 6/-C/sub 8/ aromatic hydrocarbons and is withdrawn from the process, with the second product stream, which second product stream is rich in C/sub 3/-C/sub 4/ paraffins and is withdrawn from the process, with the second product stream having a flow rate equal to at least 30 wt. percent of the flow rate of the feed stream; and (ii) the mass flow rate of paraffinic hydrocarbons out of the reaction zone exceeds the mass flow rate of paraffinic hydrocarbons into the reaction zone.

  16. Conversion and Blending Facility highly enriched uranium to low enriched uranium as metal. Revision 1

    SciTech Connect (OSTI)

    1995-07-05

    The mission of this Conversion and Blending Facility (CBF) will be to blend surplus HEU metal and alloy with depleted uranium metal to produce an LEU product. The primary emphasis of this blending operation will be to destroy the weapons capability of large, surplus stockpiles of HEU. The blended LEU product can only be made weapons capable again by the uranium enrichment process. The blended LEU will be produced as a waste suitable for storage or disposal.

  17. Domestic U.S. Reactor Conversions: Fact Sheet | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration Domestic U.S. Reactor Conversions: Fact Sheet | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Countering Nuclear Terrorism About Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Library Bios Congressional Testimony Fact Sheets Newsletters Press Releases Photo Gallery

  18. NNSA Completes Conversion of the Budapest Research Reactor and Removal of

    National Nuclear Security Administration (NNSA)

    All Fresh HEU in Hungary | National Nuclear Security Administration Conversion of the Budapest Research Reactor and Removal of All Fresh HEU in Hungary | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Countering Nuclear Terrorism About Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations

  19. Test Site Operations & Maintenance Safety

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Test Site Operations & Maintenance Safety - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste

  20. Address conversion unit for multiprocessor system

    SciTech Connect (OSTI)

    Fava, T.F.; Lary, R.F.; Blackledge, R.

    1987-03-03

    An address conversion unit is described for use in one processor in a multi-processor data processing system including a common memory, the processors and common memory being interconnected by a common bus including means for transferring address signals defining a common address space. The processor includes private bus means including means for transferring signals including address signals defining a private address space. A processor unit means is connected to the private bus means and includes means for transmitting and receiving signals including address signals over the private bus means for engaging in data transfers thereover. The address conversion unit is connected to the private bus means and common bus means for receiving address signals over the private bus means from the processor unit means in the private address space. The unit comprises: A. pointer storage means for storing a pointer identifying a portion of the common bus memory space; B. pointer generation means connected to receive a common bus address and for generating a pointer in response thereto for storage in the pointer storage means; and C. common bus address generation means connected to the private bus and the pointer storage means for receiving an address from the processor unit means and for generating a common bus address in response thereto. The common bus address is used to initiate transfers between the processor unit means and the common memory over the common bus.

  1. Advanced Stirling conversion systems for terrestrial applications

    SciTech Connect (OSTI)

    Shaltens, R.K.

    1987-01-01

    Sandia National Laboratories (SNLA) is developing heat engines for terrestrial Solar distributed Heat Receivers. SNLA has identified the Stirling to be one of the most promising candidates for the terrestrial applications. The free-piston Stirling engine (FPSE) has the potential to meet the DOE goals for both performance and cost. Free-piston Stirling activities which are directed toward a dynamic power source for the space application are being conducted. Space power system requirements include high efficiency, very long life, high reliability and low vibration. The FPSE has the potential for future high power space conversion systems, either solar or nuclear powered. Generic free-piston technology is currently being developed for use with a residential heat pump under an Interagency Agreement. Also, an overview is presented of proposed conceptual designs for the Advanced Stirling Conversion System (ASCS) using a free-piston Stirling engine and a liquid metal heat pipe receiver. Power extraction includes both a linear alternator and hydraulic output capable of delivering approximately 25 kW of electrical power to the electric utility grid. Target cost of the engine/alternator is 300 dollars per kilowatt at a manufacturing rate of 10,000 units per year. The design life of the ASCS is 60,000 h (30 y) with an engine overhaul at 40,000 h (20 y). Also discussed are the key features and characteristics of the ASCS conceptual designs.

  2. Ocean energy conversion systems annual research report

    SciTech Connect (OSTI)

    Not Available

    1981-03-01

    Alternative power cycle concepts to the closed-cycle Rankine are evaluated and those that show potential for delivering power in a cost-effective and environmentally acceptable fashion are explored. Concepts are classified according to the ocean energy resource: thermal, waves, currents, and salinity gradient. Research projects have been funded and reported in each of these areas. The lift of seawater entrained in a vertical steam flow can provide potential energy for a conventional hydraulic turbine conversion system. Quantification of the process and assessment of potential costs must be completed to support concept evaluation. Exploratory development is being completed in thermoelectricity and 2-phase nozzles for other thermal concepts. Wave energy concepts are being evaluated by analysis and model testing with present emphasis on pneumatic turbines and wave focussing. Likewise, several conversion approaches to ocean current energy are being evaluated. The use of salinity resources requires further research in membranes or the development of membraneless processes. Using the thermal resource in a Claude cycle process as a power converter is promising, and a program of R and D and subsystem development has been initiated to provide confirmation of the preliminary conclusion.

  3. Oriented Nanostructures for Energy Conversion and Storage

    SciTech Connect (OSTI)

    Liu, Jun; Cao, Guozhong H.; Yang, Zhenguo; Wang, Donghai; DuBois, Daniel L.; Zhou, Xiao Dong; Graff, Gordon L.; Pederson, Larry R.; Zhang, Jiguang

    2008-08-28

    Recently the role of nanostructured materials in addressing the challenges in energy and natural resources has attracted wide attention. In particular, oriented nanostructures have demonstrated promising properties for energy harvesting, conversion and storage. The purpose of the paper is to review the synthesis and application of oriented nanostructures in a few key areas of energy technologies, namely photovoltaics, batteries, supercapacitors and thermoelectrics. Although the applications differ from field to field, one of the fundamental challenges is to improve the generation and transport of electrons and ions. We will first briefly review the several major approaches to attain oriented nanostructured films that are applicable for energy applications. We will then discuss how such controlled nanostructures can be used in photovoltaics, batteries, capacitors, thermoelectrics, and other unconventional ways of energy conversion. We will highlight the role of high surface area to maximize the surface activity, and the importance of optimum dimension and architecture, controlled pore channels and alignment of the nanocrystalline phase to optimize the electrons and ion transport. Finally, the paper will discuss the challenges in attaining integrated architectures to achieve the desired performance. Brief background information will be provided for the relevant technologies, but the emphasis is focused mainly on the nanoeffects of mostly inorganic based materials and devices.

  4. Enzymantic Conversion of Coal to Liquid Fuels

    SciTech Connect (OSTI)

    Richard Troiano

    2011-01-31

    The work in this project focused on the conversion of bituminous coal to liquid hydrocarbons. The major steps in this process include mechanical pretreatment, chemical pretreatment, and finally solubilization and conversion of coal to liquid hydrocarbons. Two different types of mechanical pretreatment were considered for the process: hammer mill grinding and jet mill grinding. After research and experimentation, it was decided to use jet mill grinding, which allows for coal to be ground down to particle sizes of 5 {mu}m or less. A Fluid Energy Model 0101 JET-O-MIZER-630 size reduction mill was purchased for this purpose. This machine was completed and final testing was performed on the machine at the Fluid Energy facilities in Telford, PA. The test results from the machine show that it can indeed perform to the required specifications and is able to grind coal down to a mean particle size that is ideal for experimentation. Solubilization and conversion experiments were performed on various pretreated coal samples using 3 different approaches: (1) enzymatic - using extracellular Laccase and Manganese Peroxidase (MnP), (2) chemical - using Ammonium Tartrate and Manganese Peroxidase, and (3) enzymatic - using the live organisms Phanerochaete chrysosporium. Spectral analysis was used to determine how effective each of these methods were in decomposing bituminous coal. After analysis of the results and other considerations, such as cost and environmental impacts, it was determined that the enzymatic approaches, as opposed to the chemical approaches using chelators, were more effective in decomposing coal. The results from the laccase/MnP experiments and Phanerochaete chrysosporium experiments are presented and compared in this final report. Spectra from both enzymatic methods show absorption peaks in the 240nm to 300nm region. These peaks correspond to aromatic intermediates formed when breaking down the coal structure. The peaks then decrease in absorbance over time, corresponding to the consumption of aromatic intermediates as they undergo ring cleavage. The results show that this process happens within 1 hour when using extracellular enzymes, but takes several days when using live organisms. In addition, live organisms require specific culture conditions, control of contaminants and fungicides in order to effectively produce extracellular enzymes that degrade coal. Therefore, when comparing the two enzymatic methods, results show that the process of using extracellular lignin degrading enzymes, such as laccase and manganese peroxidase, appears to be a more efficient method of decomposing bituminous coal.

  5. Environmental impacts of ocean thermal energy conversion

    SciTech Connect (OSTI)

    Not Available

    1986-04-01

    Ocean thermal energy conversion (OTEC) is a promising technology for production of energy and usable by-products from solar-generated temperature gradients in the world's oceans. Although considered benign compared to alternative forms of energy generation, deployment of OTEC plants will result in interactions with marine, terrestrial, and atmospheric environments and in socioeconomic interactions with surrounding areas. The Ocean Energy Technology Program of the Department of Energy has funded research to improve the understanding of these interactions. No insurmountable environmental obstacle to OTEC deployment has been uncovered. This document contains a summary of that research for entrepreneurs, utility engineers, and others interested in pursuing OTEC's potential. In addition, it provides a guide to permits, regulations, and licenses applicable to construction of an OTEC plant.

  6. Ocean Thermal Energy Conversion Act of 1980

    SciTech Connect (OSTI)

    Not Available

    1980-01-01

    A legislative proposal to develop ocean thermal energy conversion (OTEC) facilities for power generation was the subject of hearings held on April 10 and May 1, 1980. Following the test of S. 2492 are the statements of 20 witnesses and additional materials submitted for consideration. The need for a large-scale demonstration of OTEC and the need for a Federal regulatory, siting, and financial-assistance framework are the major commercialization issues. S. 2492 provides one-stop licensing by treating the facilities as vessels and making them eligible for loan guarantees. The bill complements S. 1430, which deals with the demonstration program. OTEC development in Hawaii has progressed to a second pilot project. (DCK)

  7. Nanoscale Materials and Architectures for Energy Conversion

    SciTech Connect (OSTI)

    Grulke, Eric A.; Sunkara, Mahendra K.

    2011-05-25

    The Kentucky EPSCoR Program supported an inter-university, multidisciplinary energy-related research cluster studying nanomaterials for converting solar radiation and residual thermal energy to electrical energy and hydrogen. It created a collaborative center of excellence based on research expertise in nanomaterials, architectures, and their synthesis. The project strengthened and improved the collaboration between the University of Louisville, the University of Kentucky, and NREL. The cluster hired a new faculty member for ultra-fast transient spectroscopy, and enabled the mentoring of one research scientist, two postdoctoral scholars and ten graduate students. Work was accomplished with three focused cluster projects: organic and photoelectrochemical solar cells, solar fuels, and thermionic energy conversion.

  8. OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT

    SciTech Connect (OSTI)

    Sands, M.Dale

    1980-08-01

    Significant achievements in Ocean Thermal Energy Conversion (OTEC) technology have increased the probability of producing OTEC-derived power in this decade with subsequent large-scale commercialization to follow by the turn of the century. Under U.S. Department of Energy funding, Interstate Electronics has prepared an OTEC Programmatic Environmental Assessment (EA) that considers tne development, demonstration, and commercialization of OTEC power systems. The EA considers several tecnnological designs (open cycle and closed cycle), plant configurations (land-based, moored, and plantship), and power usages (baseload electricity and production of ammonia and aluminum). Potencial environmental impacts, health and safety issues, and a status update of international, federal, and state plans and policies, as they may influence OTEC deployments, are included.

  9. Apparatus and method for pyroelectric power conversion

    DOE Patents [OSTI]

    Olsen, Randall B. (Olivenhain, CA)

    1984-01-01

    Apparatus and method for converting heat to electrical energy by the use of one or more capacitors having temperature dependent capacitance. The capacitor is cycled between relatively high and relatively low temperatures by successive thermal contact with relatively high and relatively low temperature portions of a heat transfer medium having a temperature gradient therein. Upon heating of the capacitor, the capacitance thereof is reduced, so that a charge therein is caused to expand into associated external circuitry in which it is available to do electrical work. The capacitor is then cooled and recharged and the cycle is repeated. The electrical output of the capacitor results from the regenerative delivery of heat to and removal of heat from the capacitor by the heat transfer medium, and efficient conversion of heat to electric energy is thereby effected.

  10. Apparatus and method for pyroelectric power conversion

    DOE Patents [OSTI]

    Olsen, R.B.

    1984-01-10

    Apparatus and method for converting heat to electrical energy by the use of one or more capacitors having temperature dependent capacitance are disclosed. The capacitor is cycled between relatively high and relatively low temperatures by successive thermal contact with relatively high and relatively low temperature portions of a heat transfer medium having a temperature gradient therein. Upon heating of the capacitor, the capacitance thereof is reduced, so that a charge therein is caused to expand into associated external circuitry in which it is available to do electrical work. The capacitor is then cooled and recharged and the cycle is repeated. The electrical output of the capacitor results from the regenerative delivery of heat to and removal of heat from the capacitor by the heat transfer medium, and efficient conversion of heat to electric energy is thereby effected. 12 figs.

  11. Separation of Corn Fiber and Conversion to Fuels and Chemicals: Pilot-Scale Operation

    Broader source: Energy.gov [DOE]

    This fact sheet summarizes a U.S. Department of Energy Biomass Program research and development project.

  12. CRAD, Criticality Safety- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January 2005 assessment of the Criticality Safety program at the Y-12 - Enriched Uranium Facility.

  13. Separation of Corn Fiber and Conversion to Fuels and Chemicals: Pilot-Scale Operation

    SciTech Connect (OSTI)

    None

    2006-04-01

    This project focuses on the development and pilot-scale testing of technologies that will enable the development of a biorefinery capable of economically deriving high-value chemicals and oils from lower value corn fiber.

  14. Closed Brayton cycle power conversion systems for nuclear reactors :

    SciTech Connect (OSTI)

    Wright, Steven A.; Lipinski, Ronald J.; Vernon, Milton E.; Sanchez, Travis

    2006-04-01

    This report describes the results of a Sandia National Laboratories internally funded research program to study the coupling of nuclear reactors to gas dynamic Brayton power conversion systems. The research focused on developing integrated dynamic system models, fabricating a 10-30 kWe closed loop Brayton cycle, and validating these models by operating the Brayton test-loop. The work tasks were performed in three major areas. First, the system equations and dynamic models for reactors and Closed Brayton Cycle (CBC) systems were developed and implemented in SIMULINKTM. Within this effort, both steady state and dynamic system models for all the components (turbines, compressors, reactors, ducting, alternators, heat exchangers, and space based radiators) were developed and assembled into complete systems for gas cooled reactors, liquid metal reactors, and electrically heated simulators. Various control modules that use proportional-integral-differential (PID) feedback loops for the reactor and the power-conversion shaft speed were also developed and implemented. The simulation code is called RPCSIM (Reactor Power and Control Simulator). In the second task an open cycle commercially available Capstone C30 micro-turbine power generator was modified to provide a small inexpensive closed Brayton cycle test loop called the Sandia Brayton test-Loop (SBL-30). The Capstone gas-turbine unit housing was modified to permit the attachment of an electrical heater and a water cooled chiller to form a closed loop. The Capstone turbine, compressor, and alternator were used without modification. The Capstone systems nominal operating point is 1150 K turbine inlet temperature at 96,000 rpm. The annular recuperator and portions of the Capstone control system (inverter) and starter system also were reused. The rotational speed of the turbo-machinery is controlled by adjusting the alternator load by using the electrical grid as the load bank. The SBL-30 test loop was operated at the manufacturers site (Barber-Nichols Inc.) and installed and operated at Sandia. A sufficiently detailed description of the loop is provided in this report along with the design characteristics of the turbo-alternator-compressor set to allow other researchers to compare their results with those measured in the Sandia test-loop. The third task consisted of a validation effort. In this task the test loop was operated and compared with the modeled results to develop a more complete understanding of this electrically heated closed power generation system and to validate the model. The measured and predicted system temperatures and pressures are in good agreement, indicating that the model is a reasonable representation of the test loop. Typical deviations between the model and the hardware results are less than 10%. Additional tests were performed to assess the capability of the Brayton engine to continue to remove decay heat after the reactor/heater is shutdown, to develop safe and effective control strategies, and to access the effectiveness of gas inventory control as an alternative means to provide load following. In one test the heater power was turned off to simulate a rapid reactor shutdown, and the turbomachinery was driven solely by the sensible heat stored in the heater for over 71 minutes without external power input. This is an important safety feature for CBC systems as it means that the closed Brayton loop will keep cooling the reactor without the need for auxiliary power (other than that needed to circulate the waste heat rejection coolant) provided the heat sink is available.

  15. ARM - AMF2 Operations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Contacts Management and Operations Operations Overview ARM Links BCR | ECR ECO, EWO Extraview PIF, CAR, DQR & DQPR Operations Status System i.arm.gov AMF2 Deployment...

  16. Current Research on Thermochemical Conversion of Biomass at the National Renewable Energy Laboratory

    SciTech Connect (OSTI)

    Baldwin, R. M.; Magrini-Bair, K. A.; Nimlos, M. R.; Pepiot, P.; Donohoe, B. S.; Hensley, J. E.; Phillips, S. D.

    2012-04-05

    The thermochemical research platform at the National Bioenergy Center, National Renewable Energy Laboratory (NREL) is primarily focused on conversion of biomass to transportation fuels using non-biological techniques. Research is conducted in three general areas relating to fuels synthesis via thermochemical conversion by gasification: (1) Biomass gasification fundamentals, chemistry and mechanisms of tar formation; (2) Catalytic tar reforming and syngas cleaning; and (3) Syngas conversion to mixed alcohols. In addition, the platform supports activities in both technoeconomic analysis (TEA) and life cycle assessment (LCA) of thermochemical conversion processes. Results from the TEA and LCA are used to inform and guide laboratory research for alternative biomass-to-fuels strategies. Detailed process models are developed using the best available material and energy balance information and unit operations models created at NREL and elsewhere. These models are used to identify cost drivers which then form the basis for research programs aimed at reducing costs and improving process efficiency while maintaining sustainability and an overall net reduction in greenhouse gases.

  17. Evaluation of aftermarket CNG conversion kits in light-duty vehicle applications. Final report

    SciTech Connect (OSTI)

    Blazek, C.F.; Rowley, P.F.; Grimes, J.W.

    1995-07-01

    The Institute of Gas Technology (IGT) was contracted by the National Renewable Energy Laboratory (NREL) to evaluate three compressed natural gas (CNG) conversion systems using a 1993 Chevrolet Lumina baseline vehicle. A fourth conversion system was added to the test matrix through funding support from Brooklyn Union. The objective of this project was to measure the Federal Test Procedure (FTP) emissions and fuel economy of the different conversion systems, and to compare the performance to gasoline-fueled operation and each other. Different natural gas compositions were selected to represent the 10th percentile, mean, and 90th percentile compositions distributed in the Continental United States. Testing with these different compositions demonstrated the systems` ability to accommodate the spectrum of gas found in the United States. Each compressed natural gas conversion system was installed and adjusted according to the manufacturer`s instructions. In addition to the FTP testing, an evaluation of the comparative installation times and derivability tests (based on AGA and CRC guidelines) were conducted on each system.

  18. Hydrogen Production: Microbial Biomass Conversion | Department of Energy

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

    Microbial Biomass Conversion Hydrogen Production: Microbial Biomass Conversion Photo of a fermentation reactor Microbial biomass conversion processes take advantage of the ability of microorganisms to consume and digest biomass and release hydrogen. Depending on the pathway, this research could result in commercial-scale systems in the mid- to long-term timeframe that could be suitable for distributed, semi-central, or central hydrogen production scales, depending on the feedstock used. How Does

  19. Startup Design Features for Supercritical Power Conversion Systems - Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Innovation Portal Building Energy Efficiency Building Energy Efficiency Find More Like This Return to Search Startup Design Features for Supercritical Power Conversion Systems Sandia National Laboratories Contact SNL About This Technology Publications: PDF Document Publication Market Sheet (738 KB) Technology Marketing SummarySandia National Laboratories has created solutions to startup flow issues in supercritical conversion systems. The Supercritical Brayton Cycle is a power conversion

  20. 2011 Biomass Program Platform Peer Review: Thermochemical Conversion |

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

    Department of Energy Thermochemical Conversion 2011 Biomass Program Platform Peer Review: Thermochemical Conversion "This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the U.S. Department of Energy Biomass Programs Thermochemical Conversion Platform Review meeting, held on February 16...18, 2011, at the Crowne Plaza Hotel in Downtown Denver, Colorado." PDF icon 2011_thermochem_review.pdf More Documents &

  1. Process Design and Economics for Biochemical Conversion of Lignocellulosic

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

    Biomass to Ethanol: Dilute-Acid Pretreatment and Enzymatic Hydrolysis of Corn Stover | Department of Energy Biochemical Conversion of Lignocellulosic Biomass to Ethanol: Dilute-Acid Pretreatment and Enzymatic Hydrolysis of Corn Stover Process Design and Economics for Biochemical Conversion of Lignocellulosic Biomass to Ethanol: Dilute-Acid Pretreatment and Enzymatic Hydrolysis of Corn Stover This report describes one potential biochemical ethanol conversion process, conceptually based upon

  2. Biological Conversion of Sugars to Hydrocarbons Technology Pathway

    Office of Scientific and Technical Information (OSTI)

    (Technical Report) | SciTech Connect Biological Conversion of Sugars to Hydrocarbons Technology Pathway Citation Details In-Document Search Title: Biological Conversion of Sugars to Hydrocarbons Technology Pathway This technology pathway case investigates the biological conversion of biomass-derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot-scale demonstrations at NREL. Technical barriers and key research

  3. Algae-to-Fuel: Integrating Thermochemical Conversion, Nutrient Recycling,

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

    and Wastewater | Department of Energy Algae-to-Fuel: Integrating Thermochemical Conversion, Nutrient Recycling, and Wastewater Algae-to-Fuel: Integrating Thermochemical Conversion, Nutrient Recycling, and Wastewater Breakout Session 2-C: Biogas and Beyond: Challenges and Opportunities for Advanced Biofuels from Wet-Waste Feedstocks Algae-to-Fuel: Integrating Thermochemical Conversion, Nutrient Recycling, and Wastewater Jordi Perez, Scientist, SRI International PDF icon

  4. Thermochemical Conversion: Using Heat and Catalysis to Make Biofuels and

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

    Bioproducts | Department of Energy Conversion: Using Heat and Catalysis to Make Biofuels and Bioproducts Thermochemical Conversion: Using Heat and Catalysis to Make Biofuels and Bioproducts The Bioenergy Technologies Office works with industry to develop pathways that use heat, pressure, and catalysis to convert domestic, non-food biomass into gasoline, jet fuel, and other products. PDF icon thermochemical_four_pager.pdf More Documents & Publications BETO Conversion Program Replacing the

  5. Trends in Contractor Conversion Rates | Department of Energy

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

    Contractor Conversion Rates Trends in Contractor Conversion Rates Better Buildings Residential Network Workforce / Business Partners Peer Exchange Call Series: Trends in Contractor Conversion Rates, Call Slides and Discussion Summary, December 5, 2013. PDF icon Call Slides and Discussion Summary More Documents & Publications Better Buildings -- Concierge Programs for Contractors -- They're Not Just for Consumers anymore Programs and Contractors -Top Tips for Successful Relationships! (101)

  6. Microturbine Power Conversion Technology Review, April 2003 | Department of

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

    Energy Microturbine Power Conversion Technology Review, April 2003 Microturbine Power Conversion Technology Review, April 2003 Oak Ridge National Laboratory (ORNL) performed a technology review to assess the market for commercially available power electronic converters that can be used to connect microturbines to either the electric grid or local loads. The intent of the review is to facilitate an assessment of the present status of marketed power conversion technology to determine how

  7. Light-Material Interactions in Energy Conversion - Energy Frontier Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Center (LMI-EFRC) New approaches to full spectrum solar energy conversion California Institute of Technology Hall Auditorium, Gates-Thomas Laboratory [map] LIVE Internet Broadcast [download flyer] watch now The recorded presentations and panel discussion are now available for online viewing. The Light-Material Interactions in Energy Conversion Energy Frontier Research Center (LMI-EFRC) is excited to offer this free public webinar on New Approaches to Full Spectrum Solar Energy Conversion.

  8. Symposium on the Physical Chemistry of Solar Energy Conversion,

    Office of Scientific and Technical Information (OSTI)

    Indianapolis American Chemical Society Meetings, Fall 2013 (Technical Report) | SciTech Connect Symposium on the Physical Chemistry of Solar Energy Conversion, Indianapolis American Chemical Society Meetings, Fall 2013 Citation Details In-Document Search Title: Symposium on the Physical Chemistry of Solar Energy Conversion, Indianapolis American Chemical Society Meetings, Fall 2013 The Symposium on the Physical Chemistry of Solar Energy Conversion at the Fall ACS Meeting in Indianapolis, IN

  9. LED Street Lighting Conversion Workshop Presentations | Department of

    Energy Savers [EERE]

    Energy Research & Development » Technology Application R&D » Municipal Consortium » News & Events » LED Street Lighting Conversion Workshop Presentations LED Street Lighting Conversion Workshop Presentations This page provides links to the presentations given at the National League of Cities Mobile Workshop, LED Street Lighting Conversion: Saving Your Community Money, While Improving Public Safety, held November 13, 2013, in Seattle, WA. Presentations and Materials State of

  10. Workshop on Conversion Technologies for Advanced Biofuels - Bio-Oils |

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

    Department of Energy Bio-Oils Workshop on Conversion Technologies for Advanced Biofuels - Bio-Oils Introduction presentation report-out at the CTAB webinar on bio-oils. PDF icon ctab_webinar_bio_oils_intro.pdf More Documents & Publications Conversion Technologies for Advanced Biofuels - Bio-Oil Production Conversion Technologies for Advanced Biofuels - Bio-Oil Upgrading Challenge # 2 Logistics and Compatibility with Existing Infrastructure Throughout Supply Chain

  11. 2015 Peer Review Presentations-Thermochemical Conversion | Department of

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

    Energy Thermochemical Conversion 2015 Peer Review Presentations-Thermochemical Conversion The Bioenergy Technologies Office hosted its 2015 Project Peer Review on March 23-27, 2015, at the Hilton Mark Center in Alexandria, Virginia. The presentations from the thermochemical conversion sessions are available to view and download below. For detailed session descriptions and presentation titles, view the 2015 Project Peer Review Program Booklet. PDF icon

  12. Low-Enriched Uranium Fuel Conversion Activities for the High Flux Isotope Reactor, Annual Report for FY 2011

    SciTech Connect (OSTI)

    Renfro, David G; Cook, David Howard; Freels, James D; Griffin, Frederick P; Ilas, Germina; Sease, John D; Chandler, David

    2012-03-01

    This report describes progress made during FY11 in ORNL activities to support converting the High Flux Isotope Reactor (HFIR) from high-enriched uranium (HEU) fuel to low-enriched uranium (LEU) fuel. Conversion from HEU to LEU will require a change in fuel form from uranium oxide to a uranium-molybdenum (UMo) alloy. With both radial and axial contouring of the fuel foil and an increase in reactor power to 100 MW, calculations indicate that the HFIR can be operated with LEU fuel with no degradation in performance to users from the current levels achieved with HEU fuel. Studies are continuing to demonstrate that the fuel thermal safety margins can be preserved following conversion. Studies are also continuing to update other aspects of the reactor steady state operation and accident response for the effects of fuel conversion. Technical input has been provided to Oregon State University in support of their hydraulic testing program. The HFIR conversion schedule was revised and provided to the GTRI program. In addition to HFIR conversion activities, technical support was provided directly to the Fuel Fabrication Capability program manager.

  13. Feedstock Supply System Design and Economics for Conversion of Lignocellulosic Biomass to Hydrocarbon Fuels Conversion Pathway: Fast Pyrolysis and Hydrotreating Bio-Oil Pathway "The 2017 Design Case"

    SciTech Connect (OSTI)

    Kevin L. Kenney; Kara G. Cafferty; Jacob J. Jacobson; Ian J. Bonner; Garold L. Gresham; J. Richard Hess; William A. Smith; David N. Thompson; Vicki S. Thompson; Jaya Shankar Tumuluru; Neal Yancey

    2014-01-01

    The U.S. Department of Energy promotes the production of liquid fuels from lignocellulosic biomass feedstocks by funding fundamental and applied research that advances the state of technology in biomass sustainable supply, logistics, conversion, and overall system sustainability. As part of its involvement in this program, Idaho National Laboratory (INL) investigates the feedstock logistics economics and sustainability of these fuels. Between 2000 and 2012, INL quantified and the economics and sustainability of moving biomass from the field or stand to the throat of the conversion process using conventional equipment and processes. All previous work to 2012 was designed to improve the efficiency and decrease costs under conventional supply systems. The 2012 programmatic target was to demonstrate a biomass logistics cost of $55/dry Ton for woody biomass delivered to fast pyrolysis conversion facility. The goal was achieved by applying field and process demonstration unit-scale data from harvest, collection, storage, preprocessing, handling, and transportation operations into INL’s biomass logistics model.

  14. Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system

    DOE Patents [OSTI]

    Dziendziel, Randolph J.; DePoy, David Moore; Baldasaro, Paul Francis

    2007-01-23

    This invention relates to the field of thermophotovoltaic (TPV) direct energy conversion. In particular, TPV systems use filters to minimize parasitic absorption of below bandgap energy. This invention constitutes a novel combination of front surface filters to increase TPV conversion efficiency by reflecting useless below bandgap energy while transmitting a very high percentage of the useful above bandgap energy. In particular, a frequency selective surface is used in combination with an interference filter. The frequency selective surface provides high transmission of above bandgap energy and high reflection of long wavelength below bandgap energy. The interference filter maintains high transmission of above bandgap energy and provides high reflection of short wavelength below bandgap energy and a sharp transition from high transmission to high reflection.

  15. Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system

    DOE Patents [OSTI]

    Dziendziel, Randolph J.; Baldasaro, Paul F.; DePoy, David M.

    2010-09-07

    This invention relates to the field of thermophotovoltaic (TPV) direct energy conversion. In particular, TPV systems use filters to minimize parasitic absorption of below bandgap energy. This invention constitutes a novel combination of front surface filters to increase TPV conversion efficiency by reflecting useless below bandgap energy while transmitting a very high percentage of the useful above bandgap energy. In particular, a frequency selective surface is used in combination with an interference filter. The frequency selective surface provides high transmission of above bandgap energy and high reflection of long wavelength below bandgap energy. The interference filter maintains high transmission of above bandgap energy and provides high reflection of short wavelength below bandgap energy and a sharp transition from high transmission to high reflection.

  16. A Single Multi-Functional Enzyme for Efficient Biomass Conversion...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Find More Like This Return to Search A Single Multi-Functional Enzyme for Efficient Biomass Conversion National Renewable Energy Laboratory Contact NREL About This Technology...

  17. Potential Impacts of Hydrokinetic and Wave Energy Conversion...

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

    Potential Impacts of Hydrokinetic and Wave Energy Conversion Technologies on Aquatic Environments The article reviews the results of that workshop, focusing on potential effects on ...

  18. Science Highlights- Center for Solar and Thermal Energy Conversion

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1 - Abstracts and Highlight Slides Efficiency of Thermoelectric Energy Conversion in Biphenyl-dithiol Junctions: Effect of Electron-Phonon Interactions Plasmonic Backscattering...

  19. NREL-Ocean Energy Thermal Conversion | Open Energy Information

    Open Energy Info (EERE)

    Energy Laboratory Sector: Energy Topics: Resource assessment Website: www.nrel.govotec NREL-Ocean Energy Thermal Conversion Screenshot References: OTEC1 Logo: NREL-Ocean...

  20. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    an over-the-road truck system. PDF icon schock.pdf More Documents & Publications Thermoelectric Conversion of Wate Heat to Electricity in an IC Engine Powered Vehicle...

  1. Thermoelectric Conversion of Exhaust Gas Waste Heat into Usable...

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

    Exhaust Gas Waste Heat into Usable Electricity Thermoelectric Conversion of Exhaust Gas Waste Heat into Usable Electricity Presents successful incorporation of one of the most...

  2. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    Peer Evaluation PDF icon ace049schock2011o.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle...

  3. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    thermoelectrics on a OTR truck PDF icon schock.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle...

  4. Novel Energy Conversion Equipment for Low Temperatures Geothermal...

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

    Temperatures Geothermal Resources Novel Energy Conversion Equipment for Low Temperatures Geothermal Resources presentation at the April 2013 peer review meeting held in Denver,...

  5. Process Design and Economics for Biochemical Conversion of Lignocellul...

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

    Biochemical Conversion of Lignocellulosic Biomass to Ethanol: Dilute-Acid Pretreatment and Enzymatic Hydrolysis of Corn Stover Process Design and Economics for Biochemical ...

  6. Process Design and Economics for the Conversion of Lignocellulosic...

    Office of Scientific and Technical Information (OSTI)

    As such, the analysis does not reflect the current state of commercially-available ... purpose of this study is to quantify the economic impact of individual conversion targets ...

  7. Process Design and Economics for the Conversion of Lignocellulosic...

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

    Process Design and Economics for the Conversion of Lignocellulosic Biomass to ... The process design converts biomass to a hydrocarbon intermediate, a free fatty acid, ...

  8. New process speeds conversion of biomass to fuels

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    conditions. The journal Catalysis Science & Technology published the research. Trash to Treasure "Efficient conversion of non-food biomass into fuels and chemical...

  9. Bioenergy Technologies Office Conversion R&D Pathway: Whole Algae...

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

    Whole Algae Hydrothermal Liquefaction Bioenergy Technologies Office Conversion R&D Pathway: Whole Algae Hydrothermal Liquefaction Whole algae hydrothermal liquefaction is one of...

  10. Bioenergy Technologies Office Conversion R&D Pathway: Syngas...

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

    Syngas Upgrading to Hydrocarbon Fuels Bioenergy Technologies Office Conversion R&D Pathway: Syngas Upgrading to Hydrocarbon Fuels Syngas upgrading to hydrocarbon fuels is one of...

  11. New process speeds conversion of biomass to fuels

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Nancy Ambrosiano Communications Office (505) 667-0471 Email Efficient conversion of non-food biomass into fuels and chemical feedstocks could reduce society's dependence on...

  12. Novel Energy Conversion Equipment for Low Temperature Geothermal...

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

    Novel Energy Conversion Equipment for Low Temperature Geothermal Resources Jay Kohler Eric Minor Johnson Controls, Inc. Geothermal Energy Production from Low Temperature Resources ...

  13. Algae-to-Fuel: Integrating Thermochemical Conversion, Nutrient...

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

    Algae-to-Fuel: Integrating Thermochemical Conversion, Nutrient Recycling, and Wastewater Breakout Session 2-C: Biogas and Beyond: Challenges and Opportunities for Advanced Biofuels ...

  14. Biological Conversion of Sugars to Hydrocarbons Technology Pathway...

    Office of Scientific and Technical Information (OSTI)

    case investigates the biological conversion of biomass-derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with...

  15. Conversations and Connections - The Expertise of our Small Business Program

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Managers (Energy.gov) | Jefferson Lab energy.gov/diversity/articles/conversations-and-connections-expertise-our-small-business-program-managers Submitted: Monday, August 20

  16. Photosynthetic Conversion of CO2 to Fuels and Chemicals using...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Photosynthetic Conversion of CO 2 to Fuels and Chemicals using Cyanobacteria Accelerating Innovation Webinar August 8, 2012 Jianping Yu, Ph.D., Senior Scientist * Many eukaryotic ...

  17. Catalytic Conversion of Biomass-derived Feedstock (HMF) into...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    pathways, and the conversion of HMF to biofuel and a variety of value-added chemicals is ... Furthermore, although the easiest accessible biofuel from HMF (dimethylfuran, DMF) is ...

  18. Novel Energy Conversion Equipment for Low Temperatures Geothermal Resources

    Broader source: Energy.gov [DOE]

    Novel Energy Conversion Equipment for Low Temperatures Geothermal Resources presentation at the April 2013 peer review meeting held in Denver, Colorado.

  19. Light-Material Interactions in Energy Conversion - Energy Frontier...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The Light-Material Interactions in Energy Conversion Energy Frontier Research Center (LMI-EFRC) is excited to offer this free public webinar on Approaches to Ultrahigh Efficiency ...

  20. Left Coast Electric Formerly Left Coast Conversions | Open Energy...

    Open Energy Info (EERE)

    Services Product: California-based company that provides services and products for electric cars. References: Left Coast Electric (Formerly Left Coast Conversions)1 This...

  1. U-058: Apache Struts Conversion Error OGNL Expression Injection...

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

    in Apache Struts. A remote user can execute arbitrary commands on the target system. PLATFORM: Apache Struts 2.x ABSTRACT: Apache Struts Conversion Error OGNL Expression...

  2. Symposium on the Physical Chemistry of Solar Energy Conversion...

    Office of Scientific and Technical Information (OSTI)

    session): (1) Quantum Dots and Nanorods for Solar Energy Conversion (2 half-day sessions); (2) Artificial Photosynthesis: Water Oxidation; (3) Artificial Photosynthesis: Solar ...

  3. Suite of Cellulase Enzyme Technologies for Biomass Conversion...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Biomass and Biofuels Biomass and Biofuels Find More Like This Return to Search Suite of Cellulase Enzyme Technologies for Biomass Conversion National Renewable Energy Laboratory...

  4. MHK Technologies/Wave Energy Conversion Activator WECA | Open...

    Open Energy Info (EERE)

    MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Wave Energy Conversion Activator WECA.jpg Technology Profile Primary Organization Daedalus...

  5. Directors - Center for Solar and Thermal Energy Conversion

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Green was a member of the decadal study on Condensed Matter and Materials Physics ... particularly for functional coatings, sensors and energy conversion applications. ...

  6. Technology assessment of wind energy conversion systems

    SciTech Connect (OSTI)

    Meier, B. W.; Merson, T. J.

    1980-09-01

    Environmental data for wind energy conversion systems (WECSs) have been generated in support of the Technology Assessment of Solar Energy (TASE) program. Two candidates have been chosen to characterize the WECS that might be deployed if this technology makes a significant contribution to the national energy requirements. One WECS is a large machine of 1.5-MW-rated capacity that can be used by utilities. The other WECS is a small machine that is characteristic of units that might be used to meet residential or small business energy requirements. Energy storage systems are discussed for each machine to address the intermittent nature of wind power. Many types of WECSs are being studied and a brief review of the technology is included to give background for choosing horizontal axis designs for this study. Cost estimates have been made for both large and small systems as required for input to the Strategic Environmental Assessment Simulation (SEAS) computer program. Material requirements, based on current generation WECSs, are discussed and a general discussion of environmental impacts associated with WECS deployment is presented.

  7. Conversion of bagasse cellulose into ethanol

    SciTech Connect (OSTI)

    Cuzens, J.E.

    1997-11-19

    The study conducted by Arkenol was designed to test the conversion of feedstocks such as sugar cane bagasse, sorghum, napier grass and rice straw into fermentable sugars, and then ferment these sugars using natural yeasts and genetically engineered Zymomonis mobilis bacteria (ZM). The study did convert various cellulosic feedstocks into fermentable sugars utilizing the patented Arkenol Concentrated Acid Hydrolysis Process and equipment at the Arkenol Technology Center in Orange, California. The sugars produced using this process were in the concentration range of 12--15%, much higher than the sugar concentrations the genetically engineered ZM bacteria had been developed for. As a result, while the ZM bacteria fermented the produced sugars without initial inhibition, the completion of high sugar concentration fermentations was slower and at lower yield than predicted by the National Renewable Energy Laboratory (NREL). Natural yeasts performed as expected by Arkenol, similar to the results obtained over the last four years of testing. Overall, at sugar concentrations in the 10--13% range, yeast produced 850090% theoretical ethanol yields and ZM bacteria produced 82--87% theoretical yields in 96 hour fermentations. Additional commercialization work revealed the ability to centrifugally separate and recycle the ZM bacteria after fermentation, slight additional benefits from mixed culture ZM bacteria fermentations, and successful utilization of defined media for ZM bacteria fermentation nutrients in lieu of natural media.

  8. Evaluation of aftermarket LPG conversion kits in light-duty vehicle applications. Final report

    SciTech Connect (OSTI)

    Bass, E.A.

    1993-06-01

    SwRI was contracted by NREL to evaluate three LPG conversion kits on a Chevrolet Lumina. The objective of the project was to measure the Federal Test Procedure (FTP) emissions and fuel economy of these kits, and compare their performance to gasoline-fueled operation and to each other. Varying LPG fuel blends allowed a preliminary look at the potential for fuel system disturbance. The project required kit installation and adjustment according to manufacturer`s instructions. A limited amount of trouble diagnosis was also performed on the fuel systems. A simultaneous contract from the Texas Railroad Commission, in cooperation with NREL, provided funds for additional testing with market fuels (HD5 propane and industry average gasoline) and hydrocarbon (HC) emissions speciation to determine the ozone-forming potential of LPG HC emissions. This report documents the procurement, installation, and testing of these LPG conversion kits.

  9. Century-Midas steps slowly into the RV (recreational vehicles) LPG conversion market

    SciTech Connect (OSTI)

    Kincaid, J.

    1980-02-01

    Midas International will obtain LPG carburetion equipment from Century for installation in up to 20,000 RV. The market for gasoline-powered RV has been depressed since the surge in gasoline prices, and the installation of Century's equipment represents an attempt to attract customers by reducing RV operating costs. According to J. Kincaid (Midas Inst.), propane, besides being cheaper than gasoline, is also cheaper than diesel fuel, despite the better mileage obtained with diesel fuel, because the use of diesel fuel requires the installation of a diesel engine, which is far more expensive than installation of LPG carburetion. Although most of the LPG carburetion manufacturers, with a backlog of orders, did not evince interest in Midas' search for conversion equipment for RV, Century responded, at least partly because Midas also manufactures fleet delivery trucks, which represent a potentially much larger market for LPG conversion and use.

  10. Commercial considerations in conversion and UF{sub 6} transactions

    SciTech Connect (OSTI)

    1994-02-01

    This article addresses various commercial considerations that result from the conversion of U3O8 into UF6 and the associated physical characteristics of natural UF6. Handling, transport, conversion, and enrichment of UF6 are discussed. Avenues of acquisition, including nation of origin, are also noted.

  11. Measurement and modeling of advanced coal conversion processes

    SciTech Connect (OSTI)

    Solomon, P.R.; Serio, M.A.; Hamblen, D.G. ); Smoot, L.D.; Brewster, B.S. )

    1991-01-01

    The objective of this study are to establish the mechanisms and rates of basic steps in coal conversion processes, to integrate and incorporate this information into comprehensive computer models for coal conversion processes, to evaluate these models and to apply them to gasification, mild gasification and combustion in heat engines.

  12. Measurement and modeling of advanced coal conversion processes

    SciTech Connect (OSTI)

    Solomon, P.R.; Serio, M.A.; Hamblen, D.G. ); Smoot, L.D.; Brewster, B.S. )

    1991-09-25

    The objectives of this study are to establish the mechanisms and rates of basic steps in coal conversion processes, to integrate and incorporate this information into comprehensive computer models for coal conversion processes, to evaluate these models and to apply them to gasification, mild gasification and combustion in heat engines. (VC)

  13. Automotive Waste Heat Conversion to Power Program | Department of Energy

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

    09 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. PDF icon ace_47_lagrandeur.pdf More Documents & Publications Automotive Waste Heat Conversion to Power Program Automotive Waste Heat Conversion to Power Program Development of a 100-Watt High Temperature Thermoelectric Generator

  14. Thermochemical Conversion Proceeses to Aviation Fuels | Department of

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

    Energy Conversion Proceeses to Aviation Fuels Thermochemical Conversion Proceeses to Aviation Fuels This is a presentation from the November 27, 2012, Sustainable Alternative Fuels Cost Workshop given by John Holladay, PNNL PDF icon holladay_caafi_workshop.pdf More Documents & Publications Technology Pathway Selection Effort Pathways for Algal Biofuels U.S., Canada, and Finland Pyrolysis Collaborations

  15. Electroluminescent apparatus having a structured luminescence conversion layer

    DOE Patents [OSTI]

    Krummacher, Benjamin Claus (Sunnyvale, CA)

    2008-09-02

    An apparatus such as a light source is disclosed which has an OLED device and a structured luminescence conversion layer disposed on the substrate or transparent electrode of said OLED device and on the exterior of said OLED device. The structured luminescence conversion layer contains color-changing and non-color-changing regions arranged in a particular pattern.

  16. Workshop on Conversion Technologies for Advanced Biofuels - Carbohydrates |

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

    Department of Energy Carbohydrates Workshop on Conversion Technologies for Advanced Biofuels - Carbohydrates DOE report-out presentation at the CTAB webinar on carbohydrates. PDF icon ctab_webinar_carbohydrates_intro.pdf More Documents & Publications Conversion Technologies for Advanced Biofuels - Carbohydrates Production Innovative Topics for Advanced Biofuels Cross-cutting Technologies for Advanced Biofuels

  17. Dynamometer Testing of USPS EV Conversions | Department of Energy

    Office of Environmental Management (EM)

    Dynamometer Testing of USPS EV Conversions Dynamometer Testing of USPS EV Conversions 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon vss060_jones_2011_o.pdf More Documents & Publications NYC Taxi Drive Cycle Development and Simulation Study Vehicle Systems Integration (VSI) Research Laboratory at ORNL Enabling High Efficiency Ethanol Engines

  18. Development of Integrated Online Monitoring Systems for Detection of Diversion at Natural Uranium Conversion Facilities

    SciTech Connect (OSTI)

    Dewji, Shaheen A; Lee, Denise L; Croft, Stephen; McElroy, Robert Dennis; Hertel, Nolan; Chapman, Jeffrey Allen; Cleveland, Steven L

    2013-01-01

    Recent work at Oak Ridge National Laboratory (ORNL) has focused on some source term modeling of uranyl nitrate (UN) as part of a comprehensive validation effort employing gamma-ray detector instrumentation for the detection of diversion from declared conversion activities. Conversion, the process by which natural uranium ore (yellowcake) is purified and converted through a series of chemical processes into uranium hexafluoride gas (UF6), has historically been excluded from the nuclear safeguards requirements of the 235U-based nuclear fuel cycle. The undeclared diversion of this product material could potentially provide feedstock for a clandestine weapons program for state or non-state entities. Given the changing global political environment and the increased availability of dual-use nuclear technology, the International Atomic Energy Agency has evolved its policies to emphasize safeguarding this potential feedstock material in response to dynamic and evolving potential diversion pathways. To meet the demand for instrumentation testing at conversion facilities, ORNL developed the Uranyl Nitrate Calibration Loop Equipment (UNCLE) facility to simulate the full-scale operating conditions of a purified uranium-bearing aqueous stream exiting the solvent extraction process in a natural uranium conversion plant. This work investigates gamma-ray signatures of UN circulating in the UNCLE facility and evaluates detector instrumentation sensitivity to UN for safeguards applications. These detector validation activities include assessing detector responses to the UN gamma-ray signatures for spectrometers based on sodium iodide, lanthanum bromide, and germanium detectors. The results of measurements under static and dynamic operating conditions at concentrations ranging from 10-90g U/L of naturally enriched UN will be presented. A range of gamma-ray lines was examined and self-attenuation factors were calculated, in addition to attenuation for transmission measurement of density, concentration and enrichment. A detailed uncertainty analysis will be presented providing insights into instrumentation limitations to spoofing.

  19. Nominal Performance Biosphere Dose Conversion Factor Analysis

    SciTech Connect (OSTI)

    Wasiolek, Maryla A.

    2000-12-21

    The purpose of this report was to document the process leading to development of the Biosphere Dose Conversion Factors (BDCFs) for the postclosure nominal performance of the potential repository at Yucca Mountain. BDCF calculations concerned twenty-four radionuclides. This selection included sixteen radionuclides that may be significant nominal performance dose contributors during the compliance period of up to 10,000 years, five additional radionuclides of importance for up to 1 million years postclosure, and three relatively short-lived radionuclides important for the human intrusion scenario. Consideration of radionuclide buildup in soil caused by previous irrigation with contaminated groundwater was taken into account in the BDCF development. The effect of climate evolution, from the current arid conditions to a wetter and cooler climate, on the BDCF values was evaluated. The analysis included consideration of different exposure pathway's contribution to the BDCFs. Calculations of nominal performance BDCFs used the GENII-S computer code in a series of probabilistic realizations to propagate the uncertainties of input parameters into the output. BDCFs for the nominal performance, when combined with the concentrations of radionuclides in groundwater allow calculation of potential radiation doses to the receptor of interest. Calculated estimates of radionuclide concentration in groundwater result from the saturated zone modeling. The integration of the biosphere modeling results (BDCFs) with the outcomes of the other component models is accomplished in the Total System Performance Assessment (TSPA) to calculate doses to the receptor of interest from radionuclides postulated to be released to the environment from the potential repository at Yucca Mountain.

  20. Ocean thermal energy conversion: Perspective and status

    SciTech Connect (OSTI)

    Thomas, A.; Hillis, D.L.

    1990-01-01

    The use of the thermal gradient between the warm surface waters and the deep cold waters of tropical oceans was first proposed by J. A. d'Arsonval in 1881 and tried unsuccessfully be George Claude in 1930. Interest in Ocean Thermal Energy Conversion (OTEC) and other renewable energy sources revived in the 1970s as a result of oil embargoes. At that time, the emphasis was on large floating plants miles from shore producing 250--400 MW for maintained grids. When the problems of such plants became better understood and the price of oil reversed its upward trend, the emphasis shifted to smaller (10 MW) shore-based plants on tropical islands. Such plants would be especially attractive if they produce fresh water as a by-product. During the past 15 years, major progress has been made in converting OTEC unknowns into knowns. Mini-OTEC proved the closed-cycle concept. Cost-effective heat-exchanger concepts were identified. An effective biofouling control technique was discovered. Aluminum was determined to be promising for OTEC heat exchangers. Heat-transfer augmentation techniques were identified, which promised a reduction on heat-exchanger size and cost. Fresh water was produced by an OTEC open-cycle flash evaporator, using the heat energy in the seawater itself. The current R D emphasis is on the design and construction of a test facility to demonstrate the technical feasibility of the open-cycle process. The 10 MW shore-based, closed-cycle plant can be built with today's technology; with the incorporation of a flash evaporator, it will produce fresh water as well as electrical power -- both valuable commodities on many tropical islands. The open-cycle process has unknowns that require solution before the technical feasibility can be demonstrated. The economic viability of either cycle depends on reducing the capital costs of OTEC plants and on future trends in the costs of conventional energy sources. 7 refs.

  1. Biomass Thermochemical Conversion Program. 1983 Annual report

    SciTech Connect (OSTI)

    Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

    1984-08-01

    Highlights of progress achieved in the program of thermochemical conversion of biomass into clean fuels during 1983 are summarized. Gasification research projects include: production of a medium-Btu gas without using purified oxygen at Battelle-Columbus Laboratories; high pressure (up to 500 psia) steam-oxygen gasification of biomass in a fluidized bed reactor at IGT; producing synthesis gas via catalytic gasification at PNL; indirect reactor heating methods at the Univ. of Missouri-Rolla and Texas Tech Univ.; improving the reliability, performance, and acceptability of small air-blown gasifiers at Univ. of Florida-Gainesville, Rocky Creek Farm Gasogens, and Cal Recovery Systems. Liquefaction projects include: determination of individual sequential pyrolysis mechanisms at SERI; research at SERI on a unique entrained, ablative fast pyrolysis reactor for supplying the heat fluxes required for fast pyrolysis; work at BNL on rapid pyrolysis of biomass in an atmosphere of methane to increase the yields of olefin and BTX products; research at the Georgia Inst. of Tech. on an entrained rapid pyrolysis reactor to produce higher yields of pyrolysis oil; research on an advanced concept to liquefy very concentrated biomass slurries in an integrated extruder/static mixer reactor at the Univ. of Arizona; and research at PNL on the characterization and upgrading of direct liquefaction oils including research to lower oxygen content and viscosity of the product. Combustion projects include: research on a directly fired wood combustor/gas turbine system at Aerospace Research Corp.; adaptation of Stirling engine external combustion systems to biomass fuels at United Stirling, Inc.; and theoretical modeling and experimental verification of biomass combustion behavior at JPL to increase biomass combustion efficiency and examine the effects of additives on combustion rates. 26 figures, 1 table.

  2. Open cycle ocean thermal energy conversion system

    DOE Patents [OSTI]

    Wittig, J. Michael (West Goshen, PA)

    1980-01-01

    An improved open cycle ocean thermal energy conversion system including a flash evaporator for vaporizing relatively warm ocean surface water and an axial flow, elastic fluid turbine having a vertical shaft and axis of rotation. The warm ocean water is transmitted to the evaporator through a first prestressed concrete skirt-conduit structure circumferentially situated about the axis of rotation. The unflashed warm ocean water exits the evaporator through a second prestressed concrete skirt-conduit structure located circumferentially about and radially within the first skirt-conduit structure. The radially inner surface of the second skirt conduit structure constitutes a cylinder which functions as the turbine's outer casing and obviates the need for a conventional outer housing. The turbine includes a radially enlarged disc element attached to the shaft for supporting at least one axial row of radially directed blades through which the steam is expanded. A prestressed concrete inner casing structure of the turbine has upstream and downstream portions respectively situated upstream and downstream from the disc element. The radially outer surfaces of the inner casing portions and radially outer periphery of the axially interposed disc cooperatively form a downwardly radially inwardly tapered surface. An annular steam flowpath of increasing flow area in the downward axial direction is radially bounded by the inner and outer prestressed concrete casing structures. The inner casing portions each include a transversely situated prestressed concrete circular wall for rotatably supporting the turbine shaft and associated structure. The turbine blades are substantially radially coextensive with the steam flowpath and receive steam from the evaporator through an annular array of prestressed concrete stationary vanes which extend between the inner and outer casings to provide structural support therefor and impart a desired flow direction to the steam.

  3. ASTM PV INSTALLATON COMMISSIONING, OPERATIONS & MAINTENNCE (ICOMP) STANDARD PRACTICE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ASTM PV INSTALLATON COMMISSIONING, OPERATIONS & MAINTENNCE (ICOMP) STANDARD PRACTICE MEETING ANNOUNCEMENT ASTM International subcommittee E44.09 Photovoltaic Electric Power Conversion will be holding a meeting for their WK43549 Practice for Installation Commissioning Operation and Maintenance Process task group on Thursday, May 8, 2014 at 8:00am until 1:00pm. This meeting will follow the Sandia/EPRI 2014 PV Systems Symposium. The scope of WK43549 is to work with others around the world to

  4. Recent Advances in Catalytic Conversion of Ethanol to Chemicals

    SciTech Connect (OSTI)

    Sun, Junming; Wang, Yong

    2014-04-30

    With increased availability and decreased cost, ethanol is potentially a promising platform molecule for the production of a variety of value-added chemicals. In this review, we provide a detailed summary of recent advances in catalytic conversion of ethanol to a wide range of chemicals and fuels. We particularly focus on catalyst advances and fundamental understanding of reaction mechanisms involved in ethanol steam reforming (ESR) to produce hydrogen, ethanol conversion to hydrocarbons ranging from light olefins to longer chain alkenes/alkanes and aromatics, and ethanol conversion to other oxygenates including 1-butanol, acetaldehyde, acetone, diethyl ether, and ethyl acetate.

  5. Ocean Thermal Energy Conversion Basics | Department of Energy

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

    Thermal Energy Conversion Basics Ocean Thermal Energy Conversion Basics August 16, 2013 - 4:22pm Addthis A process called ocean thermal energy conversion (OTEC) uses the heat energy stored in the Earth's oceans to generate electricity. OTEC works best when the temperature difference between the warmer, top layer of the ocean and the colder, deep ocean water is about 36°F (20°C). These conditions exist in tropical coastal areas, roughly between the Tropic of Capricorn and the Tropic of Cancer.

  6. Method and apparatus for conversion of carbonaceous materials to liquid fuel

    SciTech Connect (OSTI)

    Lux, Kenneth W.; Namazian, Mehdi; Kelly, John T.

    2015-12-01

    Embodiments of the invention relates to conversion of hydrocarbon material including but not limited to coal and biomass to a synthetic liquid transportation fuel. The invention includes the integration of a non-catalytic first reaction scheme, which converts carbonaceous materials into a solid product that includes char and ash and a gaseous product; a non-catalytic second reaction scheme, which converts a portion of the gaseous product from the first reaction scheme to light olefins and liquid byproducts; a traditional gas-cleanup operations; and the third reaction scheme to combine the olefins from the second reaction scheme to produce a targeted fuel like liquid transportation fuels.

  7. Thermal conversion of biomass to valuable fuels, chemical feedstocks and chemicals

    DOE Patents [OSTI]

    Peters, William A. (Lexington, MA); Howard, Jack B. (Winchester, MA); Modestino, Anthony J. (Hanson, MA); Vogel, Fredreric (Villigen PSI, CH); Steffin, Carsten R. (Herne, DE)

    2009-02-24

    A continuous process for the conversion of biomass to form a chemical feedstock is described. The biomass and an exogenous metal oxide, preferably calcium oxide, or metal oxide precursor are continuously fed into a reaction chamber that is operated at a temperature of at least 1400.degree. C. to form reaction products including metal carbide. The metal oxide or metal oxide precursor is capable of forming a hydrolizable metal carbide. The reaction products are quenched to a temperature of 800.degree. C. or less. The resulting metal carbide is separated from the reaction products or, alternatively, when quenched with water, hydolyzed to provide a recoverable hydrocarbon gas feedstock.

  8. Chapter 1.12: Solar Radiation Resource Assessment for Renewable Energy Conversion

    SciTech Connect (OSTI)

    Myers, D. R.

    2012-01-01

    This chapter addresses measurements, modeling, and databases of solar energy potential that may serve as fuel for solar energy conversion systems. Developing innovative designs for capturing and converting solar radiation is only one part of the equation for solar system deployment. Identifying, locating, and prospecting for the appropriate quantity and quality of solar resources to fuel these systems is critical to system designers, investors, financial backers, utilities, governments, and owner/operators. This chapter addresses the fundamentals and state of the art for measuring, modeling, and applying solar radiation resource data to meet decision-making needs.

  9. Ocean Thermal Energy Conversion Program Management Plan

    SciTech Connect (OSTI)

    Combs, R E

    1980-01-01

    The Office of the Associate Laboratory Director for Energy and Environmental Technology has established the OTEC Program Management Office to be responsible for the ANL-assigned tasks of the OTEC Program under DOE's Chicago Operations and Regional Office (DOE/CORO). The ANL OTEC Program Management Plan is essentially a management-by-objective plan. The principal objective of the program is to provide lead technical support to CORO in its capacity as manager of the DOE power-system program. The Argonne OTEC Program is divided into three components: the first deals with development of heat exchangers and other components of OTEC power systems, the second with development of biofouling counter-measures and corrosion-resistant materials for these components in seawater service, and the third with environmental and climatic impacts of OTEC power-system operation. The essential points of the Management Plan are summarized, and the OTEC Program is described. The organization of the OTEC Program at ANL is described including the functions, responsibilities, and authorities of the organizational groupings. The system and policies necessary for the support and control functions within the organization are discussed. These functions cross organizational lines, in that they are common to all of the organization groups. Also included are requirements for internal and external reports.

  10. Lunar electric power systems utilizing the SP-100 reactor coupled to dynamic conversion systems. Final report

    SciTech Connect (OSTI)

    Harty, R.B.; Durand, R.E.

    1993-03-01

    An integration study was performed by Rocketdyne under contract to NASA-LeRC. The study was concerned with coupling an SP-0100 reactor to either a Brayton or Stirling power conversion system. The application was for a surface power system to supply power requirements to a lunar base. A power level of 550 kWe was selected based on the NASA Space Exploration Initiative 90-day study. Reliability studies were initially performed to determine optimum power conversion redundancy. This study resulted in selecting three operating engines and one stand-by unit. Integration design studies indicated that either the Brayton or Stirling power conversion systems could be integrated with the PS-100 reactor. The Stirling system had an integration advantage because of smaller piping size and fewer components. The Stirling engine, however, is more complex and heavier than the Brayton rotating unit, which tends to off-set the Stirling integration advantage. From a performance consideration, the Brayton had a 9 percent mass advantage, and the Stirling had a 50 percent radiator advantage.

  11. Conversion of transuranic waste to low level waste by decontamination: a site specific update

    SciTech Connect (OSTI)

    Allen, R.P.; Hazelton, R.F.

    1985-09-01

    As a followup to an FY-1984 cost/benefit study, a program was conducted in FY-1985 to transfer to the relevant DOE sites the information and technology for the direct conversion of transuranic (TRU) waste to low-level waste (LLW) by decontamination. As part of this work, the economic evaluation of the various TRUW volume reduction and conversion options was updated and expanded to include site-specific factors. The results show, for the assumptions used, that size reduction, size reduction followed by decontamination, or in situ decontamination are cost effective compared with the no-processing option. The technology transfer activities included site presentations and discussions with operations and waste management personnel to identify application opportunities and site-specific considerations and constraints that could affect the implementation of TRU waste conversion principles. These discussions disclosed definite potential for the beneficial application of these principles at most of the sites, but also confirmed the existence of site-specific factors ranging from space limitations to LLW disposal restrictions that could preclude particular applications or diminish expected benefits. 8 refs., 2 figs., 4 tabs.

  12. Advancing the Frontiers in Nanocatalysis, Biointerfaces, and Renewable Energy Conversion by Innovations of Surface Techniques

    SciTech Connect (OSTI)

    Somorjai, G.A.; Frei, H.; Park, J.Y.

    2009-07-23

    The challenge of chemistry in the 21st century is to achieve 100% selectivity of the desired product molecule in multipath reactions ('green chemistry') and develop renewable energy based processes. Surface chemistry and catalysis play key roles in this enterprise. Development of in situ surface techniques such as high-pressure scanning tunneling microscopy, sum frequency generation (SFG) vibrational spectroscopy, time-resolved Fourier transform infrared methods, and ambient pressure X-ray photoelectron spectroscopy enabled the rapid advancement of three fields: nanocatalysts, biointerfaces, and renewable energy conversion chemistry. In materials nanoscience, synthetic methods have been developed to produce monodisperse metal and oxide nanoparticles (NPs) in the 0.8-10 nm range with controlled shape, oxidation states, and composition; these NPs can be used as selective catalysts since chemical selectivity appears to be dependent on all of these experimental parameters. New spectroscopic and microscopic techniques have been developed that operate under reaction conditions and reveal the dynamic change of molecular structure of catalysts and adsorbed molecules as the reactions proceed with changes in reaction intermediates, catalyst composition, and oxidation states. SFG vibrational spectroscopy detects amino acids, peptides, and proteins adsorbed at hydrophobic and hydrophilic interfaces and monitors the change of surface structure and interactions with coadsorbed water. Exothermic reactions and photons generate hot electrons in metal NPs that may be utilized in chemical energy conversion. The photosplitting of water and carbon dioxide, an important research direction in renewable energy conversion, is discussed.

  13. Operation Warfighter Internship Fair

    Broader source: Energy.gov [DOE]

    Attendees: Participants of Operation Warfighter Program Cost: Free Supports: Veteran and Disability Employment Programs

  14. ARM - SGP Operations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Operations SGP Related Links Virtual Tour Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Operations Routine Operations SGP central facility offices. SGP central facility offices. The overwhelming majority of the measurements with the

  15. 2011 Biomass Program Platform Peer Review: Biochemical Conversion

    SciTech Connect (OSTI)

    Pezzullo, Leslie

    2012-02-01

    This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the 2011 U.S. Department of Energy Biomass Programs Biochemical Conversion Platform Review meeting.

  16. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    estimated to be 500 oC PDF icon deer09schock.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle...

  17. Thermoelectric Conversion of Wate Heat to Electricity in an IC...

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

    Wate Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Wate Heat to Electricity in an IC Engine Powered Vehicle Presentation given at the 16th...

  18. Mitochondrial complex I - energy conversion by a giant proton...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mitochondrial complex I - energy conversion by a giant proton pump Wednesday, November 4, 2015 - 3:00pm SLAC, Redtail Hawk Conference Room 108A Speaker: Volker Zickermann, Goethe...

  19. Frequency up-conversion of 10. 6-micron laser

    SciTech Connect (OSTI)

    Gong, M.; Han, K.

    1990-11-07

    The paper studies the frequency up-conversion process of a 10.6 micron laser in an AgGaS{sub 2} nonlinear crystal, and presents the results of calculating the phase matching angle, the phase matching acceptance angle, and the effective bandwidth of 10.6 micron light. Thus, the frequency conversion of 10.6 micron light to 0.967 micron light is realized. In the nonfocussing mode, the maximum power conversion efficiency is greater than 7%. The eta(theta) and eta(Ip) curves were measured; the optimal phase matching angle is 38 deg 50 min for type II. Multiple factors that affect conversion efficiency are analyzed; the major noise sources of the upconversion system of an infrared detector are also analyzed.

  20. DOE Selects Contractor for Depleted Hexafluoride Conversion Project...

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

    DOE Selects Contractor for Depleted Hexafluoride Conversion Project Support March 25, 2013 - 12:00pm Addthis Media Contact Bill Taylor, 803-952-8564 Bill.Taylor@srs.gov Cincinnati ...

  1. Semiconductor nanowires for photovoltaic and photoelectrochemical energy conversion

    SciTech Connect (OSTI)

    Dasgupta, Neil; Yang, Peidong

    2013-01-23

    Semiconductor nanowires (NW) possess several beneficial properties for efficient conversion of solar energy into electricity and chemical energy. Due to their efficient absorption of light, short distances for minority carriers to travel, high surface-to-volume ratios, and the availability of scalable synthesis methods, they provide a pathway to address the low cost-to-power requirements for wide-scale adaptation of solar energy conversion technologies. Here we highlight recent progress in our group towards implementation of NW components as photovoltaic and photoelectrochemical energy conversion devices. An emphasis is placed on the unique properties of these one-dimensional (1D) structures, which enable the use of abundant, low-cost materials and improved energy conversion efficiency compared to bulk devices.

  2. Solar to Chemical Energy Conversion with Photocatalytic Heterostructur...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Solar to Chemical Energy Conversion with Photocatalytic Heterostructures made of Earth Abundant Materials Cu2ZnSnS4 (CZTS) is one of the most promising materials for solar energy...

  3. Energy Conversion and Thermal Efficiency Sales Tax Exemption

    Broader source: Energy.gov [DOE]

    Qualifying energy conversion facilities are those that are used for the primary purpose of converting natural gas or fuel oil to an alternate fuel or power source excluding propane, butane, napht...

  4. Light-Material Interactions in Energy Conversion - Energy Frontier...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    one-day workshop focused on new materials and processes for overcoming the Shockley-Queisser limit of solar energy conversion efficiency. event website download flyer 05.23.12...

  5. Conversion Technologies for Advanced Biofuels - Bio-Oil Upgrading...

    Office of Environmental Management (EM)

    Oil Upgrading Conversion Technologies for Advanced Biofuels - Bio-Oil Upgrading PNNL report-out at the CTAB webinar on Bio-Oil Upgrading. PDF icon ctabwebinarbiooilsupgrading.p...

  6. Y-12 fulfills major milestone in fuel conversion commitment for...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    fulfills major ... Y-12 fulfills major milestone in fuel conversion commitment for Jamaican research reactor Posted: June 3, 2014 - 4:42pm The Y-12 National Security Complex...

  7. Light-Material Interactions in Energy Conversion - Energy Frontier Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Center (LMI-EFRC) Approaches to ultrahigh efficiency solar energy conversion webinar watch now The recorded presentations and panel discussion are now available for online viewing. Sign up is now closed

  8. Doctor Patient Conversation Around Breast Cancer | GE Global...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Doctor Patient Conversation Around Breast Cancer Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window)...

  9. Automotive Waste Heat Conversion to Electric Power using Skutterudites...

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

    Electric Power using Skutterudites, TAGS, PbTe and Bi2Te3 Automotive Waste Heat Conversion to Electric Power using Skutterudites, TAGS, PbTe and Bi2Te3 Presentation given at DEER...

  10. Investing in Their Future: Portlands Purchase and Conversion...

    Energy Savers [EERE]

    round out the inventory. In all, there were more than 60 combinations of fixtures and poles installed around the city prior to the lighting conversion. The Portland Bureau of...

  11. 2011 Biomass Program Platform Peer Review. Thermochemical Conversion

    SciTech Connect (OSTI)

    Grabowski, Paul E.

    2012-02-01

    This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the 2011 U.S. Department of Energy Biomass Programs Thermochemical Conversion Platform Review meeting.

  12. ARM - Historical Operational Statistics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Operational Statistics 2016 Quarterly Reports First Quarter (PDF) Second Quarter (PDF) Third Quarter (PDF) Fourth Quarter (PDF) Past Quarterly Reports Historical Statistics Field Campaigns Operational Visitors and Accounts Data Archive and Usage (October 1995 - Present) Historical Operational Statistics The reporting requirements for DOE national user facilities are based on time. These requirements concern the actual hours of operation (ACTUAL) and the established maximum operation or uptime

  13. Paducah and Portsmouth Sites Advance Operations at DUF6 Plants | Department

    Energy Savers [EERE]

    of Energy and Portsmouth Sites Advance Operations at DUF6 Plants Paducah and Portsmouth Sites Advance Operations at DUF6 Plants November 1, 2011 - 12:00pm Addthis First cylinder enters plant. First cylinder enters plant. Paducah and Portsmouth Sites Advance Operations at DUF6 Plants First cylinder enters plant. Paducah and Portsmouth Sites Advance Operations at DUF6 Plants Paducah and Portsmouth - Babcock & Wilcox Conversion Services (BWCS) began work at the Paducah and Portsmouth sites

  14. Conversion of a diesel engine to a spark ignition natural gas engine

    SciTech Connect (OSTI)

    1996-09-01

    Requirements for alternatives to diesel-fueled vehicles are developing, particularly in urban centers not in compliance with mandated air quality standards. An operator of fleets of diesel- powered vehicles may be forced to either purchase new vehicles or equip some of the existing fleets with engines designed or modified to run on alternative fuels. In converting existing vehicles, the operator can either replace the existing engine or modify it to burn an alternative fuel. Work described in this report addresses the problem of modifying an existing diesel engine to operate on natural gas. Tecogen has developed a technique for converting turbocharged automotive diesel engines to operate as dedicated spark-ignition engines with natural gas fuel. The engine cycle is converted to a more-complete-expansion cycle in which the expansion ratio of the original engine is unchanged while the effective compression ratio is lowered, so that engine detonation is avoided. The converted natural gas engine, with an expansion ratio higher than in conventional spark- ignition natural gas engines, offers thermal efficiency at wide-open- throttle conditions comparable to its diesel counterpart. This allows field conversion of existing engines. Low exhaust emissions can be achieved when the engine is operated with precise control of the fuel air mixture at stoichiometry with a 3-way catalyst. A Navistar DTA- 466 diesel engine with an expansion ratio of 16.5 to 1 was converted in this way, modifying the cam profiles, increasing the turbocharger boost pressure, incorporating an aftercooler if not already present, and adding a spark-ignition system, natural gas fuel management system, throttle body for load control, and an electronic engine control system. The proof-of-concept engine achieved a power level comparable to that of the diesel engine without detonation. A conversion system was developed for the Navistar DT 466 engine. NOx emissions of 1.5 g/bhp-h have been obtained.

  15. Pin stack array for thermoacoustic energy conversion

    DOE Patents [OSTI]

    Keolian, Robert M.; Swift, Gregory W.

    1995-01-01

    A thermoacoustic stack for connecting two heat exchangers in a thermoacoustic energy converter provides a convex fluid-solid interface in a plane perpendicular to an axis for acoustic oscillation of fluid between the two heat exchangers. The convex surfaces increase the ratio of the fluid volume in the effective thermoacoustic volume that is displaced from the convex surface to the fluid volume that is adjacent the surface within which viscous energy losses occur. Increasing the volume ratio results in an increase in the ratio of transferred thermal energy to viscous energy losses, with a concomitant increase in operating efficiency of the thermoacoustic converter. The convex surfaces may be easily provided by a pin array having elements arranged parallel to the direction of acoustic oscillations and with effective radial dimensions much smaller than the thicknesses of the viscous energy loss and thermoacoustic energy transfer volumes.

  16. Direct Energy Conversion Nano-hybrid Fuel

    SciTech Connect (OSTI)

    Popa-Simil, Liviu

    2008-07-01

    Most of the exothermic nuclear reactions transfer the mass defect or binding and surplus energy into kinetic energy of the resulting particles. These particles are traveling through material lattices, interacting by ionization and nuclear collisions. Placing an assembly of conductive-insulating layers in the path of such radiation, the ionization energy is transformed into charge accumulation by polarization. The result is a super-capacitor charged by the moving particles and discharged electrically. Another more promising solution is to use bi-material nanoparticles organized such as to act like a serial connection and add the voltage. A spherical symmetry fission products source coated in several nano-layers is desired for such structures. The system may operate as dry or liquid-immersed battery, removing the fission products from the fissile material. There is a tremendous advantage over the current heat flow based thermal stabilization system allowing a power density up to 1000 times higher. (author)

  17. Conversion of olefins to liquid motor fuels

    DOE Patents [OSTI]

    Rabo, Jule A. (Armonk, NY); Coughlin, Peter K. (Yorktown Heights, NY)

    1988-01-01

    Linear and/or branched claim C.sub.2 to C.sub.12 olefins are converted to hydrocarbon mixtures suitable for use as liquid motor fuels by contact with a catalyst capable of ensuring the production of desirable products with only a relatively minor amount of heavy products boiling beyond the diesel oil range. The catalyst having desirable stability during continuous production operations, comprises a steam stabilized zeolite Y catalyst of hydrophobic character, desirably in aluminum-extracted form. The olefins such as propylene, may be diluted with inerts, such as paraffins or with water, the latter serving to moderate the acidity of the catalyst, or to further moderate the activity of the aluminum-extracted catalyst, so as to increase the effective life of the catalyst.

  18. Measurement and modeling of advanced coal conversion processes

    SciTech Connect (OSTI)

    Solomon, P.R.; Serio, M.A.; Hamblen, D.G.; Smoot, L.D.; Brewster, B.S. Brigham Young Univ., Provo, UT )

    1991-01-01

    The overall objective of this program is the development of predictive capability for the design, scale up, simulation, control and feedstock evaluation in advanced coal conversion devices. This program will merge significant advances made in measuring and quantitatively describing the mechanisms in coal conversion behavior. Comprehensive computer codes for mechanistic modeling of entrained-bed gasification. Additional capabilities in predicting pollutant formation will be implemented and the technology will be expanded to fixed-bed reactors.

  19. In Conversation with Jim Schuck: Nano-optics

    ScienceCinema (OSTI)

    Jim Schuck and Alice Egan

    2010-01-08

    Sponsored by Berkeley Lab's Materials Sciences Division (MSD), "In Conversation with" is a next generation science seminar series. Host Alice Egan is the assistant to MSD Director Miquel Salmeron. Alice conducts a fun and informative interview, touching on the lives and work of the guest. The first In Conversation With took place July 9 with Jim Schuck, a staff scientist in the Molecular Foundry's Imaging and Manipulation Facility as our first guest. He discussed the world of Nano-optics.

  20. New process speeds conversion of biomass to fuels

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Conversion of Biomass to Fuels New process speeds conversion of biomass to fuels Scientists made a major step forward recently towards transforming biomass-derived molecules into fuels. February 7, 2013 Artist's conception of the process: Researchers open up a component of the biofuel molecule, called a furan ring, to make it easier to chemically alter. Opening these rings into linear chains is a necessary step in the production of energy-dense fuels, so these linear chains can then be converted

  1. Workshop on Conversion Technologies for Advanced Biofuels - Bio-Oils

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

    Melissa Klembara Office of the Biomass Program U.S. Department of Energy Workshop on Conversion Technologies for Advanced Biofuels - Bio-Oils Report-Out Webinar February 9, 2012 2 Energy Efficiency & Renewable Energy eere.energy.gov Focus of 2007 Roadmap 2007 Roadmap "Thrust" Areas * Selective thermal processing * Syngas conversion * Utilization of conventional refinery technologies * Liquid-phase catalytic processing * Process engineering & design * Crosscutting issues 3

  2. 2011 Biomass Program Platform Peer Review: Biochemical Conversion |

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

    Department of Energy Biochemical Conversion 2011 Biomass Program Platform Peer Review: Biochemical Conversion This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the U.S. Department of Energy Biomass Program's Biochemical Platform Review meeting, held on February 14-16, 2011, at the Crowne Plaza Hotel in Downtown Denver, Colorado. PDF icon 2011_biochem_review.pdf More Documents & Publications 2011 Biomass Program Peer

  3. Process Design and Economics for the Conversion of Lignocellulosic Biomass

    Office of Scientific and Technical Information (OSTI)

    to Hydrocarbon Fuels: Fast Pyrolysis and Hydrotreating Bio-oil Pathway (Technical Report) | SciTech Connect Process Design and Economics for the Conversion of Lignocellulosic Biomass to Hydrocarbon Fuels: Fast Pyrolysis and Hydrotreating Bio-oil Pathway Citation Details In-Document Search Title: Process Design and Economics for the Conversion of Lignocellulosic Biomass to Hydrocarbon Fuels: Fast Pyrolysis and Hydrotreating Bio-oil Pathway This report describes a proposed thermochemical

  4. Engineering Nanocrystals for Energy Conversion and Storage, and Sensors

    Office of Scientific and Technical Information (OSTI)

    (Technical Report) | SciTech Connect Technical Report: Engineering Nanocrystals for Energy Conversion and Storage, and Sensors Citation Details In-Document Search Title: Engineering Nanocrystals for Energy Conversion and Storage, and Sensors Authors: Guo, Shaojun [1] + Show Author Affiliations Los Alamos National Laboratory [Los Alamos National Laboratory Publication Date: 2013-11-19 OSTI Identifier: 1107119 Report Number(s): LA-UR-13-27347 DOE Contract Number: AC52-06NA25396 Resource Type:

  5. Engineering Nanocrystals for Energy Conversion and Storage, and Sensors

    Office of Scientific and Technical Information (OSTI)

    (Technical Report) | SciTech Connect Technical Report: Engineering Nanocrystals for Energy Conversion and Storage, and Sensors Citation Details In-Document Search Title: Engineering Nanocrystals for Energy Conversion and Storage, and Sensors × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a public service. Visit OSTI to utilize additional information

  6. New process speeds conversion of biomass to fuels

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Conversion of biomass to fuels New process speeds conversion of biomass to fuels Scientists made a major step forward recently towards transforming biomass-derived molecules into fuels. February 7, 2013 Artist's conception of the process: Researchers open up a component of the biofuel molecule, called a furan ring, to make it easier to chemically alter. Opening these rings into linear chains is a necessary step in the production of energy-dense fuels, so these linear chains can then be converted

  7. Light-Material Interactions in Energy Conversion - Energy Frontier Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Center (LMI-EFRC) watch now The recorded presentations and panel discussion are now available for online viewing. The Light-Material Interactions in Energy Conversion Energy Frontier Research Center (LMI-EFRC) is excited to offer this free public webinar on Approaches to Ultrahigh Efficiency Solar Energy Conversion. The LMI-EFRC is made up of world leaders creating new optical materials and innovative photonic designs that engineer and control light-material interactions, with the goal of

  8. Light-Material Interactions in Energy Conversion - Energy Frontier Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Center (LMI-EFRC) New approaches to full spectrum solar energy conversion California Institute of Technology Hall Auditorium, Gates-Thomas Laboratory [map] LIVE Internet Broadcast [watch recorded event online] [download flyer] watch now The recorded presentations and panel discussion are now available for online viewing. The Light-Material Interactions in Energy Conversion Energy Frontier Research Center (LMI-EFRC) is excited to offer this free public webinar on New Approaches to Full

  9. Light-Material Interactions in Energy Conversion - Energy Frontier Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Center (LMI-EFRC) Lectures from the LMI-EFRC "Fundamental Challenges in Solar Energy Conversion" Workshop, July 7, 2010, Caltech Harry Atwater Introduction to the Workshop on Fundamental Challenges in Solar Energy Conversion Harry A. Atwater, Caltech Eli Yablonovitch Fundamental Limits to Light Absorption and Efficiency in Photovoltaics Eli Yablonovitch, University of California, Berkeley Richard Swanson Efficiency Limits and Cost Challenges in Photovoltaics Richard Swanson,

  10. Light-Material Interactions in Energy Conversion - Energy Frontier Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Center (LMI-EFRC) 2: Solar Spectrum Control and Conversion RG Leader: John Rogers Affiliated PIs: Paul Alivisatos, Harry Atwater, Paul Braun, Mark Brongersma, Jennifer Dionne, Shanhui Fan, Ralph Nuzzo, Eli Yablonovitch, and Xiang Zhang Downshifting luminescent concentrator with micro solar cells (J. Rogers & R. Nuzzo, UIUC) The most substantial near-term opportunity for increase in solar energy conversion efficiency is via exploitation of the full solar spectrum. As first discussed by

  11. Nanostructured High Temperature Bulk Thermoelectric Energy Conversion for

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

    Efficient Waste Heat Recovery | Department of Energy High Temperature Bulk Thermoelectric Energy Conversion for Efficient Waste Heat Recovery Nanostructured High Temperature Bulk Thermoelectric Energy Conversion for Efficient Waste Heat Recovery Proposed two-stage TEG system with half-heusler as the first stage, and Bi2Te3 as the low temperature stage expected to show a 5% fuel efficiency improvement in vehicle platform under US06 drive cycle PDF icon caylor.pdf More Documents &

  12. Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion for

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

    Efficient Automotive Waste Heat Recovery | Department of Energy High-Temperature Bulk Thermoelectric Energy Conversion for Efficient Automotive Waste Heat Recovery Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion for Efficient Automotive Waste Heat Recovery 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon ace082_caylor_2012_o.pdf More Documents & Publications Nanostructured High

  13. Light-Material Interactions in Energy Conversion - Energy Frontier Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Center (LMI-EFRC) Refractive Index Design via Porous Etched Si as part of RG-3 research efforts (Chris Gladden, LBNL) The Scientific Vision of the "Light-Material Interactions in Energy Conversion Energy Frontier Research Center" (LMI-EFRC) is to tailor the morphology, complex dielectric structure, and electronic properties of matter so as to sculpt the flow of sunlight and heat, enabling light conversion to electrical and chemical energy with unprecedented efficiency. The

  14. Light-Material Interactions in Energy Conversion - Energy Frontier Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Center (LMI-EFRC) Scientific Grand Challenge LMI researchers brainstorm spectrum splitting, Annual Meeting November 2011 The LMI-EFRC is dedicated to expanding the scientific knowledge base for fundamentally photonic principles and mechanisms in solar energy conversion. An important set of requirements of photonic materials for solar energy conversion are related to the characteristics of the sun as a light source - it is a broadband and unpolarized light source, and the achievable

  15. Porous Framework Electrocatalysts Are Key to Carbon Dioxide Conversion

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Porous Framework Electrocatalysts Are Key to Carbon Dioxide Conversion Porous Framework Electrocatalysts Are Key to Carbon Dioxide Conversion Print Friday, 19 February 2016 13:11 The burning of fossil fuels and the consequent rising levels of atmospheric CO-2 has led to a number of negative environmental consequences, including global warming and ocean acidification. Converting CO2 to fuels or chemical feedstock, ideally through the use of renewable energy, can simultaneously reduce atmospheric

  16. Research Overview | Solid State Solar Thermal Energy Conversion

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Research Overview Despite great progress in developing efficient thermal energy conversion technologies since the industrial revolution, heat-to-electricity conversion has been primarily based on thermal-mechanical systems such as steam and gas turbines and internal combustion engines. Such engines are most suitable for power generation at large scales with high power density energy sources, but their efficiency suffers when they are used for small-scale installations with low power density

  17. Research Program - Center for Solar and Thermal Energy Conversion

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    In the Inorganic PV thrust, we develop nanostructured materials architectures for solar energy conversion by engineering absorption and transport properties not available in the bulk. In particular, we aim to exploit unique quantum effects at the nanoscale which are promising for the realization of new paradigms in solar energy conversion such as intermediate band or hot carrier solar cells. Thrust Leaders: Prof. Rachel Goldman (MSE)&nbspand Prof. Jamie Phillips (EECS) Recent Publications -

  18. DOE Publishes Report on Detroit's Street Lighting Conversion | Department

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

    of Energy Report on Detroit's Street Lighting Conversion DOE Publishes Report on Detroit's Street Lighting Conversion October 7, 2015 - 12:00pm Addthis The U.S. Department of Energy has released a new report on the comprehensive street lighting restoration currently being undertaken by the City of Detroit, which includes transitioning the existing high-pressure sodium (HPS) sources to LED. Entitled Restoring Detroit's Street Lighting System, the report provides an objective review of the

  19. Utilizing Nature's Designs for Solar Energy Conversion | Department of

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

    Energy Utilizing Nature's Designs for Solar Energy Conversion Utilizing Nature's Designs for Solar Energy Conversion Presentation by Lisa Utschig, Argonne National Laboratory, at the Biological Hydrogen Production Workshop held September 24-25, 2013, at the National Renewable Energy Laboratory in Golden, Colorado. PDF icon bio_h2_workshop_utschig.pdf More Documents & Publications 2013 Biological Hydrogen Production Workshop Summary Report Basic Research Needs for Solar Energy Utulization

  20. District Wide Geothermal Heating Conversion Blaine County School District |

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

    Department of Energy District Wide Geothermal Heating Conversion Blaine County School District District Wide Geothermal Heating Conversion Blaine County School District This project will impact the geothermal energy development market by showing that ground source heat pump systems using production and re-injection wells has the lowest total cost of ownership of available HVAC replacement options. PDF icon gshp_johnson_blaine_county_school_district.pdf More Documents & Publications

  1. Symposium on the Physical Chemistry of Solar Energy Conversion,

    Office of Scientific and Technical Information (OSTI)

    Indianapolis American Chemical Society Meetings, Fall 2013 (Technical Report) | SciTech Connect Symposium on the Physical Chemistry of Solar Energy Conversion, Indianapolis American Chemical Society Meetings, Fall 2013 Citation Details In-Document Search Title: Symposium on the Physical Chemistry of Solar Energy Conversion, Indianapolis American Chemical Society Meetings, Fall 2013 × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product

  2. Novel Transparent Phosphor Conversion Matrix with High Thermal Conductivity

    Energy Savers [EERE]

    for Next-Generation Phosphor-Converted LED-based Solid State Lighting | Department of Energy Novel Transparent Phosphor Conversion Matrix with High Thermal Conductivity for Next-Generation Phosphor-Converted LED-based Solid State Lighting Novel Transparent Phosphor Conversion Matrix with High Thermal Conductivity for Next-Generation Phosphor-Converted LED-based Solid State Lighting Lead Performer: Carnegie Mellon University - Pittsburgh, PA Partners: Osram Sylvania - Danvers, MA DOE Total

  3. Word in the Square: Conversation Monitoring and Analysis Report

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

    Word in the Square Conversation Monitoring and Analysis Report Prepared for the Hydrogen Education Foundation December 10, 2007 Overview The Word in the Square Report summarizes online discussions about hydrogen within the context of alternative energy, environment, technology and sustainability. This report focuses on the online discussions for the month of November 2007. The report is divided into five categories: * Key Findings - provides key insight of the major topics of conversation *

  4. Word in the Square: Conversation Monitoring and Analysis Report |

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

    Department of Energy Word in the Square: Conversation Monitoring and Analysis Report Word in the Square: Conversation Monitoring and Analysis Report Prepared for the Hydrogen Education Foundation December 10, 2007. This report summarizes online discussions about hydrogen within the context of alternative energy, environment, technology and sustainability. This report focuses on the online discussions for the month of November 2007. PDF icon word_square_nha.pdf More Documents &

  5. WEC up! Energy Department Announces Wave Energy Conversion Prize Administrator

    Broader source: Energy.gov [DOE]

    The Water Power Program today awarded $6.5 million to a Prize Administration Team for the development and execution of the Energy Department’s Wave Energy Conversion (WEC) Prize Competition. The WEC Prize will continue to advance marine and hydrokinetic (MHK) technology as a viable source for America’s clean energy future, in part by providing an opportunity for developers to test their innovative wave energy conversion (WEC) devices in a wave generating basin.

  6. DOE Selects Contractor for Depleted Hexafluoride Conversion Project Support

    Office of Environmental Management (EM)

    | Department of Energy Contractor for Depleted Hexafluoride Conversion Project Support DOE Selects Contractor for Depleted Hexafluoride Conversion Project Support March 25, 2013 - 12:00pm Addthis Media Contact Bill Taylor, 803-952-8564 Bill.Taylor@srs.gov Cincinnati - The U.S. Department of Energy (DOE) today awarded a competitive small business task order to Navarro Research and Engineering Inc. of Oak Ridge, Tennessee. The award is a $22 million, time and materials task order with a

  7. Naturalistic Decision Making For Power System Operators

    SciTech Connect (OSTI)

    Greitzer, Frank L.; Podmore, Robin; Robinson, Marck; Ey, Pamela

    2009-06-23

    Abstract: Motivation -- As indicated by the Blackout of 2003, the North American interconnected electric system is vulnerable to cascading outages and widespread blackouts. Investigations of large scale outages often attribute the causes to the three Ts: Trees, Training and Tools. A systematic approach has been developed to document and understand the mental processes that an expert power system operator uses when making critical decisions. The approach has been developed and refined as part of a capability demonstration of a high-fidelity real-time power system simulator under normal and emergency conditions. To examine naturalistic decision making (NDM) processes, transcripts of operator-to-operator conversations are analyzed to reveal and assess NDM-based performance criteria. Findings/Design -- The results of the study indicate that we can map the Situation Awareness Level of the operators at each point in the scenario. We can also identify clearly what mental models and mental simulations are being performed at different points in the scenario. As a result of this research we expect that we can identify improved training methods and improved analytical and visualization tools for power system operators. Originality/Value -- The research applies for the first time, the concepts of Recognition Primed Decision Making, Situation Awareness Levels and Cognitive Task Analysis to training of electric power system operators. Take away message -- The NDM approach provides an ideal framework for systematic training management and mitigation to accelerate learning in team-based training scenarios with high-fidelity power grid simulators.

  8. AVTA: Testing Results on the USPS Long-life Vehicle Conversions...

    Broader source: Energy.gov (indexed) [DOE]

    AEV conversions (2010) - EDAG report USPS e-Long Life Vehicle AEV conversions (2010) - Quantum report USPS e-Long Life Vehicle AEV conversions (2010) - Zap report USPS e-Long Life...

  9. U-AVLIS feed conversion using continuous metallothermic reduction of UF{sub 4}: System description and cost estimate

    SciTech Connect (OSTI)

    Not Available

    1994-04-01

    The purpose of this document is to present a system description and develop baseline capital and operating cost estimates for commercial facilities which produced U-Fe feedstock for AVLIS enrichment plants using the continuous fluoride reduction (CFR) process. These costs can then be used together with appropriate economic assumptions to calculate estimated unit costs to the AVLIS plant owner (or utility customer) for such conversion services. Six cases are being examined. All cases assume that the conversion services are performed by a private company at a commercial site which has an existing NRC license to possess source material and which has existing uranium processing operations. The cases differ in terms of annual production capacity and whether the new process system is installed in a new building or in an existing building on the site. The six cases are summarized here.

  10. Using Fermentation and Catalysis to Make Fuels and Products: Biochemical Conversion

    SciTech Connect (OSTI)

    2010-09-01

    Information about the Biomass Program's collaborative projects to improve processing routes for biochemical conversion, which entails breaking down biomass to make the carbohydrates available for conversion into sugars.

  11. Paducah Plant Begins Enrichment Operations after Five Parties Strike

    Energy Savers [EERE]

    Agreement | Department of Energy Plant Begins Enrichment Operations after Five Parties Strike Agreement Paducah Plant Begins Enrichment Operations after Five Parties Strike Agreement May 1, 2012 - 12:00pm Addthis This cylinder hauler at Paducah’s Babcock & Wilcox Conversion Services plant delivers the first of DOE’s 14-ton depleted uranium cylinders to USEC for re-enrichment as part of a five-party agreement that is extending enrichment operations at the 60-year-old plant for

  12. Conversion of cellulosic wastes to liquid fuels

    SciTech Connect (OSTI)

    Kuester, J.L.

    1980-09-01

    The current status and future plans for a project to convert waste cellulosic (biomass) materials to quality liquid hydrocarbon fuels is described. The basic approach is indirect liquefaction, i.e., thermal gasification followed by catalytic liquefaction. The indirect approach results in separation of the oxygen in the biomass feedstock, i.e., oxygenated compounds do not appear in the liquid hydrocarbon fuel product. The process is capable of accepting a wide variety of feedstocks. Potential products include medium quality gas, normal propanol, diesel fuel and/or high octane gasoline. A fluidized bed pyrolysis system is used for gasification. The pyrolyzer can be fluidized with recycle pyrolysis gas, steam or recycle liquefaction system off gas or some combination thereof. Tars are removed in a wet scrubber. Unseparated pyrolysis gases are utilized as feed to a modified Fischer-Tropsch reactor. The liquid condensate from the reactor consists of a normal propanol-water phase and a paraffinic hydrocarbon phase. The reactor can be operated to optimize for either product. The following tasks were specified in the statement of work for the contract period: (1) feedstock studies; (2) gasification system optimization; (3) waste stream characterization; and (4) liquid fuels synthesis. In addition, several equipment improvements were implemented.

  13. Potential impact of ocean thermal energy conversion (OTEC) on fisheries. Technical report

    SciTech Connect (OSTI)

    Myers, E.P.; Hoss, D.E.; Matsumoto, W.M.; Peters, D.S.; Seki, M.P.

    1986-06-01

    The commercial development of ocean thermal energy conversion (OTEC) operations will involve some environmental perturbations for which there is no precedent experience. The pumping of very large volumes of warm surface water and cold deep water and its subsequent discharge will result in the impingement, entrainment, and redistribution of biota. Additional stresses to biota will be caused by biocide usage and temperature depressions. However, the artificial upwelling of nutrients associated with the pumping of cold deep water, and the artificial reef created by an OTEC plant may have positive effects on the local environment. Although more detailed information is needed to assess the net effect of an OTEC operation on fisheries, certain assumptions and calculations are made, supporting the conclusion that the potential risk to fisheries is not signnificant enough to deter the early development of OTEC. It will be necessary to monitor a commercial-scale plant in order to remove many of the remaining uncertainties.

  14. Uranium-233 purification and conversion to stabilized ceramic grade urania for LWBR fuel fabrication (LWBR Development Program)

    SciTech Connect (OSTI)

    Lloyd, R.

    1980-10-01

    High purity ceramic grade urania (/sup 233/UO/sub 2/) used in manufacturing the fuel for the Light Water Breeder Reactor (LWBR) core was made from uranium-233 that was obtained by irradiating thoria under special conditions to result in not more than 10 ppM of uranium-232 in the recovered uranium-233 product. A developmental study established the operating parameters of the conversion process for transforming the uranium-233 into urania powder with the appropriate chemical and physical attributes for use in fabricating the LWBR core fuel. This developmental study included the following: (a) design of an ion exchange purification process for removing the gamma-emitting alpha-decay daughters of uranium-232, to reduce the gamma-radiation field of the uranium-233 during LWBR fuel manufacture; (b) definition of the parameters for precipitating the uranium-233 as ammonium uranate (ADU) and for reducing the ADU with hydrogen to yield a urania conversion product of the proper particle size, surface area and sinterability for use in manufacturing the LWBR fuel; (c) establishment of parameters and design of equipment for stabilizing the urania conversion product to prevent it from undergoing excessive oxidation on exposure to the air during LWBR fuel manufacturing operations; and (d) development of a procedure and a facility to reprocess the unirradiated thoria-urania fuel scrap from the LWBR core manufacturing operations to recover the uranium-233 and convert it into high purity ceramic grade urania for LWBR core fabrication.

  15. Climate Data Operators (CDO)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Climate Data Operators (CDO) Climate Data Operators (CDO) Description and Overview CDO is a large tool set for working on climate data. NetCDF 34, GRIB including SZIP compression,...

  16. Soild State Energy Conversion Energy Alliance (SECA)

    SciTech Connect (OSTI)

    2011-12-31

    The overall objective is to develop a solid oxide fuel cell (SOFC) stack that can be economically produced in high volumes and mass customized for different applications in transportation, stationary power generation, and military market sectors. In Phase I, work will be conducted on system design and integration, stack development, and development of reformers for natural gas and gasoline. Specifically, Delphi-Battelle will fabricate and test a 5 kW stationary power generation system consisting of a SOFC stack, a steam reformer for natural gas, and balance-of-plant (BOP) components, having an expected efficiency of 35 percent (AC/LHV). In Phase II and Phase III, the emphasis will be to improve the SOFC stack, reduce start-up time, improve thermal cyclability, demonstrate operation on diesel fuel, and substantially reduce materials and manufacturing cost by integrating several functions into one component and thus reducing the number of components in the system. In Phase II, Delphi-Battelle will fabricate and demonstrate two SOFC systems: an improved stationary power generation system consisting of an improved SOFC stack with integrated reformation of natural gas, and the BOP components, with an expected efficiency of {>=}40 percent (AC/LHV), and a mobile 5 kW system for heavy-duty trucks and military power applications consisting of an SOFC stack, reformer utilizing anode tailgate recycle for diesel fuel, and BOP components, with an expected efficiency of {>=}30 percent (DC/LHV). Finally, in Phase III, Delphi-Battelle will fabricate and test a 5 kW Auxiliary Power Unit (APU) for mass-market automotive application consisting of an optimized SOFC stack, an optimized catalytic partial oxidation (CPO) reformer for gasoline, and BOP components, having an expected efficiency of 30 percent (DC/LHV) and a factory cost of {<=}$400/kW.

  17. Soild State Energy Conversion Energy Alliance (SECA)

    SciTech Connect (OSTI)

    2011-12-31

    The overall objective is to develop a Solid Oxide Fuel Cell (SOFC) stack that can be economically produced in high volumes and mass customized for different applications in transportation, stationary power generation, and military market sectors. In Phase I, work will be conducted on system design and integration, stack development, and development of reformers for natural gas and gasoline. Specifically, Delphi-Battelle will fabricate and test a 5 kW stationary power generation system consisting of a SOFC stack, a steam reformer for natural gas, and balance-of-plant (BOP) components, having an expected efficiency of {>=}35 percent (AC/LHV). In Phase II and Phase III, the emphasis will be to improve the SOFC stack, reduce start-up time, improve thermal cyclability, demonstrate operation on diesel fuel, and substantially reduce materials and manufacturing cost by integrating several functions into one component and thus reducing the number of components in the system. In Phase II, Delphi-Battelle will fabricate and demonstrate two SOFC systems: an improved stationary power generation system consisting of an improved SOFC stack with integrated reformation of natural gas, and the BOP components, with an expected efficiency of {>=}40 percent (AC/LHV), and a mobile 5 kW system for heavy-duty trucks and military power applications consisting of an SOFC stack, reformer utilizing anode tailgate recycle for diesel fuel, and BOP components, with an expected efficiency of {>=}30 percent (DC/LHV). Finally, in Phase III, Delphi-Battelle will fabricate and test a 5 kW Auxiliary Power Unit (APU) for mass-market automotive application consisting of an optimized SOFC stack, an optimized catalytic partial oxidation (CPO) reformer for gasoline, and BOP components, having an expected efficiency of {>=}30 percent (DC/LHV) and a factory cost of {<=}$400/kW.

  18. ARM - NSA Operations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AlaskaNSA Operations NSA Related Links Virtual Tour Facilities and Instruments Barrow Atqasuk Oliktok Point (AMF3) ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site NSA Fact Sheet Images Information for Guest Scientists Contacts NSA Operations Barrow Facility Instrumentation at the Barrow facility operates 7 days a week, 24 hours a day, year around. The instrumentation is routinely maintained using an extensive "daily rounds" checklist 5 days a week,

  19. Calutron Operators | Y-12 National Security Complex

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Operators Calutron Operators Young women recruited to operate the calutrons

  20. Paducah Operations Timeline | Department of Energy

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

    Operations Timeline Paducah Operations Timeline Paducah Operations Timeline

  1. JV Task - 129 Advanced Conversion Test - Bulgarian Lignite

    SciTech Connect (OSTI)

    Michael Swanson; Everett Sondreal; Daniel Laudal; Douglas Hajicek; Ann Henderson; Brandon Pavlish

    2009-03-27

    The objectives of this Energy & Environmental Research Center (EERC) project were to evaluate Bulgarian lignite performance under both fluid-bed combustion and gasification conditions and provide a recommendation as to which technology would be the most technically feasible for the particular feedstock and also identify any potential operating issues (such as bed agglomeration, etc.) that may limit the applicability of a potential coal conversion technology. Gasification tests were run at the EERC in the 100-400-kg/hr transport reactor development unit (TRDU) on a 50-tonne sample of lignite supplied by the Bulgarian Lignite Power Project. The quality of the test sample was inferior to any coal previously tested in this unit, containing 50% ash at 26.7% moisture and having a higher heating value of 5043 kJ/kg after partial drying in preparation for testing. The tentative conclusion reached on the basis of tests in the TRDU is that oxygen-blown gasification of this high-ash Bulgarian lignite sample using the Kellogg, Brown, and Root (KBR) transport gasifier technology would not provide a syngas suitable for directly firing a gas turbine. After correcting for test conditions specific to the pilot-scale TRDU, including an unavoidably high heat loss and nitrogen dilution by transport air, the best-case heating value for oxygen-blown operation was estimated to be 3316 kJ/m{sup 3} for a commercial KRB transport gasifier. This heating value is about 80% of the minimum required for firing a gas turbine. Removing 50% of the carbon dioxide from the syngas would increase the heating value to 4583 kJ/m{sup 3}, i.e., to about 110% of the minimum requirement, and 95% removal would provide a heating value of 7080 kJ/m{sup 3}. Supplemental firing of natural gas would also allow the integrated gasification combined cycle (IGCC) technology to be utilized without having to remove CO{sub 2}. If removal of all nitrogen from the input gas streams such as the coal transport air were achieved, a heating value very close to that needed to fire a gas turbine would be achieved; however, some operational issues associated with utilizing recycled syngas or carbon dioxide as the transport gas would also have to be resolved. Use of a coal with a quality similar to the core samples provided earlier in the test program would also improve the gasifier performance. Low cold-gas efficiencies on the order of 20% calculated for oxygen-blown tests resulted in part from specific difficulties experienced in trying to operate the pilot-scale TRDU on this very high-ash lignite. These low levels of efficiency are not believed to be representative of what could be achieved in a commercial KRB transport gasifier. Combustion tests were also performed in the EERC's circulating fluidized-bed combustor (CFBC) to evaluate this alternative technology for use of this fuel. It was demonstrated that this fuel does have sufficient heating value to sustain combustion, even without coal drying; however, it will be challenging to economically extract sufficient energy for the generation of steam for electrical generation. The boiler efficiency for the dried coal was 73.5% at 85% sulfur capture (21.4% moisture) compared to 55.3% at 85% sulfur capture (40% moisture). Improved boiler efficiencies for this coal will be possible operating a system more specifically designed to maximize heat extraction from the ash streams for this high-ash fuel. Drying of the coal to approximately 25% moisture probably would be recommended for either power system. Fuel moisture also has a large impact on fuel feedability. Pressurized gasifiers generally like drier fuels than systems operating at ambient pressures. The commercially recommended feedstock moisture for a pressurized transport reactor gasifier is 25% moisture. Maximum moisture content for a CFB system could be approximately 40% moisture as has been demonstrated on the Alstom CFB operating on Mississippi lignite. A preliminary economic evaluation for CO{sub 2} was performed on the alternatives of (1) precombustion separation of CO{sub 2} in an IGCC using the KBR transport gasifier and (2) postcombustion CO{sub 2} capture using a CFBC. It appears that the capture of CO{sub 2} from the high-pressure IGCC precombustion system would be less costly than from the low-pressure postcombustion CFBC system by a factor of 1.5, although the cost difference is not directly comparable because of the model input being limited to a higher coal quality than the Bulgarian lignite. While the decision to pursue precombustion removal of carbon dioxide has been technically proven with the Rectisol{reg_sign} and Selexol{trademark} processes, General Electric and Siemens have not sold any gas turbine systems running on the high-hydrogen syngas. They have successfully demonstrated a gas turbine on syngases containing up to 95% hydrogen. The technological hurdles should not be too difficult given this experience in the gas turbine industry.

  2. Energy Conversion and Storage Program: 1992 Annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1993-06-01

    This report is the 1992 annual progress report for the Energy Conversion and Storage Program, a part of the Energy and Environment Division of the Lawrence Berkeley Laboratory. Work described falls into three broad areas: electrochemistry; chemical applications; and materials applications. The Energy Conversion and Storage Program applies principles of chemistry and materials science to solve problems in several areas: (1) production of new synthetic fuels, (2) development of high-performance rechargeable batteries and fuel cells, (3) development of advanced thermochemical processes for energy conversion, (4) characterization of complex chemical processes and chemical species, and (5) study and application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis. Electrochemistry research aims to develop advanced power systems for electric vehicle and stationary energy storage applications. Chemical applications research includes topics such as separations, catalysis, fuels, and chemical analyses. Included in this program area are projects to develop improved, energy-efficient methods for processing product and waste streams from synfuel plants, coal gasifiers, and biomass conversion processes. Materials applications research includes evaluation of the properties of advanced materials, as well as development of novel preparation techniques. For example, techniques such as sputtering, laser ablation, and poised laser deposition are being used to produce high-temperature superconducting films.

  3. Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system

    DOE Patents [OSTI]

    Brown, E.J.; Baldasaro, P.F.; Dziendziel, R.J.

    1997-12-23

    A filter system to transmit short wavelength radiation and reflect long wavelength radiation for a thermophotovoltaic energy conversion cell comprises an optically transparent substrate segregation layer with at least one coherent wavelength in optical thickness; a dielectric interference filter deposited on one side of the substrate segregation layer, the interference filter being disposed toward the source of radiation, the interference filter including a plurality of alternating layers of high and low optical index materials adapted to change from transmitting to reflecting at a nominal wavelength {lambda}{sub IF} approximately equal to the bandgap wavelength {lambda}{sub g} of the thermophotovoltaic cell, the interference filter being adapted to transmit incident radiation from about 0.5{lambda}{sub IF} to {lambda}{sub IF} and reflect from {lambda}{sub IF} to about 2{lambda}{sub IF}; and a high mobility plasma filter deposited on the opposite side of the substrate segregation layer, the plasma filter being adapted to start to become reflecting at a wavelength of about 1.5{lambda}{sub IF}. 10 figs.

  4. Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system

    SciTech Connect (OSTI)

    Brown, E.J.; Baldasaro, P.F.; Dziendziel, R.J.

    1996-12-31

    A filter system to transmit short wavelength radiation and reflect long wavelength radiation for a thermophotovoltaic energy conversion cell comprises an optically transparent substrate segregation layer with at least one coherent wavelength in optical thickness; a dielectric interference filter deposited on one side of the substrate segregation layer, the interference filter being disposed toward the source of radiation, the interference filter including a plurality of alternating layers of high and low optical index materials adapted to change from transmitting to reflecting at a nominal wavelength {lambda}{sub IF} approximately equal to the bandgap wavelength {lambda}{sub g} of the thermophotovoltaic cell, the interference filter being adapted to transmit incident radiation from about 0.5{lambda}{sub IF} to {lambda}{sub IF} and reflect from {lambda}{sub IF} to about 2{lambda}{sub IF}; and a high mobility plasma filter deposited on the opposite side of the substrate segregation layer, the plasma filter being adapted to start to become reflecting at a wavelength of about 1.5{lambda}{sub IF}.

  5. Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system

    DOE Patents [OSTI]

    Brown, Edward J. (Clifton Park, NY); Baldasaro, Paul F. (Clifton Park, NY); Dziendziel, Randolph J. (Middlegrove, NY)

    1997-01-01

    A filter system to transmit short wavelength radiation and reflect long wavelength radiation for a thermophotovoltaic energy conversion cell comprises an optically transparent substrate segregation layer with at least one coherent wavelength in optical thickness; a dielectric interference filter deposited on one side of the substrate segregation layer, the interference filter being disposed toward the source of radiation, the interference filter including a plurality of alternating layers of high and low optical index materials adapted to change from transmitting to reflecting at a nominal wavelength .lambda..sub.IF approximately equal to the bandgap wavelength .lambda..sub.g of the thermophotovoltaic cell, the interference filter being adapted to transmit incident radiation from about 0.5.lambda..sub.IF to .lambda..sub.IF and reflect from .lambda..sub.IF to about 2.lambda..sub.IF ; and a high mobility plasma filter deposited on the opposite side of the substrate segregation layer, the plasma filter being adapted to start to become reflecting at a wavelength of about 1.5.lambda..sub.IF.

  6. Novel, Integrated Reactor / Power Conversion System (LMR-AMTEC)

    SciTech Connect (OSTI)

    Pablo Rubiolo, Principal Investigator

    2003-03-21

    The main features of this project were the development of a long life (up to 10 years) Liquid Metal Reactor (LMR) and a static conversion subsystem comprising an Alkali Metal Thermal-to-Electric (AMTEC) topping cycle and a ThermoElectric (TE) Bottom cycle. Various coupling options of the LMR with the energy conversion subsystem were explored and, base in the performances found in this analysis, an Indirect Coupling (IC) between the LMR and the AMTEC/TE converters with Alkali Metal Boilers (AMB) was chosen as the reference design. The performance model of the fully integrated sodium-and potassium-AMTEC/TE converters shows that a combined conversion efficiency in excess of 30% could be achieved by the plant. (B204)

  7. Biological Conversion of Sugars to Hydrocarbons Technology Pathway

    SciTech Connect (OSTI)

    Davis, Ryan; Biddy, Mary J.; Tan, Eric; Tao, Ling; Jones, Susanne B.

    2013-03-31

    In support of the Bioenergy Technologies Office, the National Renewable Energy Laboratory (NREL) and the Pacific Northwest National Laboratory (PNNL) are undertaking studies of biomass conversion technologies to identify barriers and target research toward reducing conversion costs. Process designs and preliminary economic estimates for each of these pathway cases were developed using rigorous modeling tools (Aspen Plus and Chemcad). These analyses incorporated the best information available at the time of development, including data from recent pilot and bench-scale demonstrations, collaborative industrial and academic partners, and published literature and patents. This technology pathway case investigates the biological conversion of biomass derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot scale demonstrations at NREL. Technical barriers and key research needs have been identified that should be pursued for the pathway to become competitive with petroleum-derived gasoline, diesel and jet range hydrocarbon blendstocks.

  8. Proceedings of the 25th intersociety energy conversion engineering conference

    SciTech Connect (OSTI)

    Nelson, P.A.; Schertz, W.W.; Till, R.H.

    1990-01-01

    This book contains the proceedings of the 25th Intersociety Energy Conversion Engineering Conference. Volume 5 is organized under the following headings: Photovoltaics I, Photovoltaics II, Geothermal power, Thermochemical conversion of biomass, Energy from waste and biomass, Solar thermal systems for environmental applications, Solar thermal low temperature systems and components, Solar thermal high temperature systems and components, Wind systems, Space power sterling technology Stirling cooler developments, Stirling solar terrestrial I, Stirling solar terrestrial II, Stirling engine generator sets, Stirling models and simulations, Stirling engine analysis, Stirling models and simulations, Stirling engine analysis, Stirling engine loss understanding, Novel engine concepts, Coal conversion and utilization, Power cycles, MHD water propulsion I, Underwater vehicle powerplants - performance, MHD underwater propulsion II, Nuclear power, Update of advanced nuclear power reactor concepts.

  9. Better Buildings: Workforce, Spotlight on Maine: Contractor Sales Training Boosts Energy Upgrade Conversions

    Broader source: Energy.gov [DOE]

    Better Buildings: Workforce, Spotlight on Maine: Contractor Sales Training Boosts Energy Upgrade Conversions.

  10. EA-1207: Pit Disassembly and Conversion Demonstration Environmental Assessment and Research and Development Activities

    Broader source: Energy.gov [DOE]

    Pit Disassembly and Conversion Demonstration Environmental Assessment and Research and Development Activities

  11. Methods for natural gas and heavy hydrocarbon co-conversion

    DOE Patents [OSTI]

    Kong, Peter C. (Idaho Falls, ID); Nelson, Lee O. (Idaho Falls, ID); Detering, Brent A. (Idaho Falls, ID)

    2009-02-24

    A reactor for reactive co-conversion of heavy hydrocarbons and hydrocarbon gases and includes a dielectric barrier discharge plasma cell having a pair of electrodes separated by a dielectric material and passageway therebetween. An inlet is provided for feeding heavy hydrocarbons and other reactive materials to the passageway of the discharge plasma cell, and an outlet is provided for discharging reaction products from the reactor. A packed bed catalyst may optionally be used in the reactor to increase efficiency of conversion. The reactor can be modified to allow use of a variety of light sources for providing ultraviolet light within the discharge plasma cell. Methods for upgrading heavy hydrocarbons are also disclosed.

  12. THERMOCHEMICAL CONVERSION OF FERMENTATION-DERIVED OXYGENATES TO FUELS

    SciTech Connect (OSTI)

    Ramasamy, Karthikeyan K.; Wang, Yong

    2013-06-01

    At present ethanol generated from renewable resources through fermentation process is the dominant biofuel. But ethanol suffers from undesirable fuel properties such as low energy density and high water solubility. The production capacity of fermentation derived oxygenates are projected to rise in near future beyond the current needs. The conversion of oxygenates to hydrocarbon compounds that are similar to gasoline, diesel and jet fuel is considered as one of the viable option. In this chapter the thermo catalytic conversion of oxygenates generated through fermentation to fuel range hydrocarbons will be discussed.

  13. Site Specific Coal Conversion | netl.doe.gov

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Site Specific Coal Conversion The Site Specific Coal Conversion Key Technology will include less mature R&D and case-specific engineering and construction and balance of plant R&D to most effectively deploy advanced C&CBTL systems in a certain location, with a certain feed, infrastructure, and environment for fuels production. Essentially, work in this area will be a bridge between a systems or process design for a particular application of coal-biomass to liquids, and a specific

  14. Energy conversion device with support member having pore channels

    DOE Patents [OSTI]

    Routkevitch, Dmitri [Longmont, CO; Wind, Rikard A [Johnstown, CO

    2014-01-07

    Energy devices such as energy conversion devices and energy storage devices and methods for the manufacture of such devices. The devices include a support member having an array of pore channels having a small average pore channel diameter and having a pore channel length. Material layers that may include energy conversion materials and conductive materials are coaxially disposed within the pore channels to form material rods having a relatively small cross-section and a relatively long length. By varying the structure of the materials in the pore channels, various energy devices can be fabricated, such as photovoltaic (PV) devices, radiation detectors, capacitors, batteries and the like.

  15. US, Russian Federation Sign Joint Statement on Reactor Conversion |

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

    Department of Energy US, Russian Federation Sign Joint Statement on Reactor Conversion US, Russian Federation Sign Joint Statement on Reactor Conversion June 26, 2012 - 12:00pm Addthis News Media Contact (202) 586-4940 This release is cross-posted from NNSA.energy.gov. MOSCOW - The U.S. and Russian Federation jointly announced today that the first stage of work defined in the Implementing Agreement between the Russian State Corporation for Atomic Energy (Rosatom) and the Department of Energy

  16. Cask fleet operations study

    SciTech Connect (OSTI)

    Not Available

    1988-01-01

    The Nuclear Waste Policy Act of 1982 assigned to the Department of Energy's (DOE) Office of Civilian Waste Management the responsibility for disposing of high-level waste and spent fuel. A significant part of that responsibility involves transporting nuclear waste materials within the federal waste management system; that is, from the waste generator to the repository. The lead responsibility for transportation operations has been assigned to Oak Ridge Operations, with Oak Ridge National Laboratory (ORNL) providing technical support through the Transportation Operations Support Task Group. One of the ORNL support activities involves assessing what facilities, equipment and services are required to assure that an acceptable, cost-effective and safe transportation operations system can be designed, operated and maintained. This study reviews, surveys and assesses the experience of Nuclear Assurance Corporation (NAC) in operating a fleet of spent-fuel shipping casks to aid in developing the spent-fuel transportation system.

  17. Operations Research Analysts

    Gasoline and Diesel Fuel Update (EIA)

    Operations Research Analysts The U.S. Energy Information Administration (EIA) within the Department of Energy has forged a world-class information program that stresses quality, teamwork, and employee growth. In support of our program, we offer a variety of profes- sional positions, including the Operations Research Analyst, whose work is associated with the development and main- tenance of energy modeling systems. Responsibilities: Operations Research Analysts perform or participate in one or

  18. JLF Conduct of Operations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    JLF Conduct of Operations The Conduct of Operations is a set of procedures and guidelines that are put in place to ensure operational safety and security for users and staff. The Target Areas contain a variety of potentially hazardous ultra-violet, visible and infrared lasers. Due to the complexity and scale of the laser beam paths, some beams are not enclosed. Accordingly, reliance is placed on engineering and administrative controls, and the proper use of laser protective eyewear. Other

  19. Transforming Commercial Building Operations

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

    Transforming Commercial Building Operations Transforming Commercial Building Operations Ron Underhill Pacific Northwest National Laboratory ronald.underhill@pnnl.gov (509)375-9765 April 4, 2013 2 | Building Technologies Office eere.energy.gov * Most buildings are not commissioned (Cx) before occupancy, including HVAC and lighting systems * Buildings often are poorly operated and maintained leading to significant energy waste of 5 to 20%, even when they have building automation systems (BASs) *

  20. Operating Experience Summaries

    Broader source: Energy.gov [DOE]

    The Office of Environment, Health, Safety and Security (AU) Office of Analysis publishes the Operating Experience Summary to exchange lessons-learned information between DOE facilities.

  1. Current Safe Operating Practices

    Broader source: Energy.gov [DOE]

    Safe operating practices are established to minimize the known hazards associated with handling hydrogen—fire, explosion, and asphyxiation. Some hazards can be mitigated by hydrogen's unique...

  2. Operations Committee Report

    Broader source: Energy.gov (indexed) [DOE]

    Presented to the Commission to Review Effectiveness of National Energy Laboratories Jeff Smith Deputy for Operations Oak Ridge National Laboratory February 24, 2015 The Importance ...

  3. APS Operational Statistics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Downtime Log Yearly Operation Statistics 2016 Statistics 2015 Statistics 2014 Statistics 2013 Statistics 2012 Statistics 2011 Statistics 2010 Statistics 2009 Statistics 2008...

  4. APS User Operations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Schedules APS Schedule Useful Links Beamline Design Library (former Design Exchange) Machine Status Link Bunch Clock Information APS Systems Status Storage Ring Operating Status...

  5. ARM - AMF Operations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2009-2010 Shouxian, China, 2008 Black Forest, Germany, 2007 Niamey, Niger, 2006 Point Reyes, California, 2005 AMF Operations Members of the AMF1 installation team prepare the...

  6. SAVANNAH RIVER OPERATIONS OFFICE ...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the 20-year performance period of the contract. Ameresco also will purchase additional woody biomass from local and regional providers to support the new plant's operations....

  7. ARM - AAF Operations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2007 - UAV Campaigns 1993 - 2006, 2015 Other Aircraft Campaigns 1993 - 2010 AAF Contacts Rickey Petty DOE AAF Program Director Beat Schmid Technical Director AAF Operations...

  8. Operator interface for vehicles

    DOE Patents [OSTI]

    Bissontz, Jay E

    2015-03-10

    A control interface for drivetrain braking provided by a regenerative brake and a non-regenerative brake is implemented using a combination of switches and graphic interface elements. The control interface comprises a control system for allocating drivetrain braking effort between the regenerative brake and the non-regenerative brake, a first operator actuated control for enabling operation of the drivetrain braking, and a second operator actuated control for selecting a target braking effort for drivetrain braking. A graphic display displays to an operator the selected target braking effort and can be used to further display actual braking effort achieved by drivetrain braking.

  9. What is Supercomputing? A Conversation with Kathy Yelick

    ScienceCinema (OSTI)

    Kathy Yelick

    2013-06-24

    In this highlight video, Jeff Miller, head of Public Affairs, sat down in conversation with Kathy Yelick, Associate Berkeley Lab Director, Computing Sciences, in the second of a series of "powerpoint-free" talks on July 18th 2012, at Berkeley Lab.

  10. Chemical conversion of energetic materials to higher value products

    SciTech Connect (OSTI)

    Mitchell, A.R.; Sanner, R.D.; Pagoria, P.F.

    1996-05-01

    The objective of this program is to develop novel, innovative solutions for the disposal of surplus explosives resulting from the demilitarization of nuclear and conventional munitions. Studies related to the conversion of TNT and Explosive D to potentially useful materials are described.

  11. Biological Conversion of Sugars to Hydrocarbons Technology Pathway

    Broader source: Energy.gov [DOE]

    This technology pathway case investigates the biological conversion of biomass-derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot-scale demonstrations at NREL. Technical barriers and key research needs have been identified that should be pursued for the pathway to become competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

  12. Ocean thermal energy conversion: report to congress - fiscal year 1982

    SciTech Connect (OSTI)

    Not Available

    1983-03-31

    National Oceanic and Atmospheric Administration (NOAA) activities related to ocean thermal energy conversion (OTEC) during fiscal year 1982 are described. The agency focus has been in the areas of providing ocean engineering and technical assistance to the Department of Energy (DOE), in streamlining the administration of the Federal OTEC licensing system, and in environmental assistance.

  13. Quantitative evaluation of ocean thermal energy conversion (OTEC): executive briefing

    SciTech Connect (OSTI)

    Gritton, E.C.; Pei, R.Y.; Hess, R.W.

    1980-08-01

    Documentation is provided of a briefing summarizing the results of an independent quantitative evaluation of Ocean Thermal Energy Conversion (OTEC) for central station applications. The study concentrated on a central station power plant located in the Gulf of Mexico and delivering power to the mainland United States. The evaluation of OTEC is based on three important issues: resource availability, technical feasibility, and cost.

  14. Compact anhydrous HCl to aqueous HCl conversion system

    DOE Patents [OSTI]

    Grossman, Mark W. (Belmont, MA); Speer, Richard (S. Hamilton, MA)

    1993-01-01

    The present invention is directed to an inexpensive and compact apparatus adapted for use with a .sup.196 Hg isotope separation process and the conversion of anhydrous HCl to aqueous HCl without the use of air flow to carry the HCl vapor into the converter system.

  15. Automotive Waste Heat Conversion to Power Program | Department of Energy

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

    0 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. PDF icon ace051_lagrandeur_2010_o.pdf More Documents & Publications Automotive Waste Heat Conversion to Power Program

  16. Jet conversions in a quark-gluon plasma

    SciTech Connect (OSTI)

    Liu, W.; Ko, C. M.; Zhang, B. W.

    2007-05-15

    Quark and gluon jets traversing through a quark-gluon plasma not only lose their energies but also can undergo flavor conversions. The conversion rates via the elastic q(q)g{yields}gq(q) and the inelastic qq{r_reversible}gg scatterings are evaluated in the lowest order in QCD. Including both jet energy loss and conversions in the expanding quark-gluon plasma produced in relativistic heavy ion collisions, we have found a net of quark jets to gluon jets. This reduces the difference between the nuclear modification factors for quark and gluon jets in central heavy ion collisions and thus enhances the p/{pi}{sup +} and p/{pi}{sup -} ratios at high transverse momentum. However, a much larger net quark-to-gluon jet conversion rate than the one given by the lowest order QCD is needed to account for the observed similar ratios in central Au+Au and p+p collisions at the same energy. Implications of our results are discussed.

  17. Conversion of borehole Stoneley waves to channel waves in coal

    SciTech Connect (OSTI)

    Johnson, P.A.; Albright, J.N.

    1987-01-01

    Evidence for the mode conversion of borehole Stoneley waves to stratigraphically guided channel waves was discovered in data from a crosswell acoustic experiment conducted between wells penetrating thin coal strata located near Rifle, Colorado. Traveltime moveout observations show that borehole Stoneley waves, excited by a transmitter positioned at substantial distances in one well above and below a coal stratum at 2025 m depth, underwent partial conversion to a channel wave propagating away from the well through the coal. In an adjacent well the channel wave was detected at receiver locations within the coal, and borehole Stoneley waves, arising from a second partial conversion of channel waves, were detected at locations above and below the coal. The observed channel wave is inferred to be the third-higher Rayleigh mode based on comparison of the measured group velocity with theoretically derived dispersion curves. The identification of the mode conversion between borehole and stratigraphically guided waves is significant because coal penetrated by multiple wells may be detected without placing an acoustic transmitter or receiver within the waveguide. 13 refs., 6 figs., 1 tab.

  18. Compact anhydrous HCl to aqueous HCl conversion system

    DOE Patents [OSTI]

    Grossman, M.W.; Speer, R.

    1993-06-01

    The present invention is directed to an inexpensive and compact apparatus adapted for use with a [sup 196]Hg isotope separation process and the conversion of anhydrous HCl to aqueous HCl without the use of air flow to carry the HCl vapor into the converter system.

  19. Energy Conversion and Storage Program. 1990 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1992-03-01

    The Energy Conversion and Storage Program applies chemistry and materials science principles to solve problems in (1) production of new synthetic fuels, (2) development of high-performance rechargeable batteries and fuel cells, (3) development of advanced thermochemical processes for energy conversion, (4) characterization of complex chemical processes, and (5) application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis. Electrochemistry research aims to develop advanced power systems for electric vehicle and stationary energy storage applications. Topics include identification of new electrochemical couples for advanced rechargeable batteries, improvements in battery and fuel-cell materials, and the establishment of engineering principles applicable to electrochemical energy storage and conversion. Chemical Applications research includes topics such as separations, catalysis, fuels, and chemical analyses. Included in this program area are projects to develop improved, energy-efficient methods for processing waste streams from synfuel plants and coal gasifiers. Other research projects seek to identify and characterize the constituents of liquid fuel-system streams and to devise energy-efficient means for their separation. Materials Applications research includes the evaluation of the properties of advanced materials, as well as the development of novel preparation techniques. For example, the use of advanced techniques, such as sputtering and laser ablation, are being used to produce high-temperature superconducting films.

  20. Light-Material Interactions in Energy Conversion - Energy Frontier Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Center (LMI-EFRC) Contact Secretary of Energy Steven Chu visits Caltech labs For more information or questions about the Light-Material Interactions in Energy Conversion Energy Frontier Research Center, please email lmi-efrc@caltech.edu or call LMI Administrator Tiffany Kimoto at 626-395-1566.

  1. Silica-Supported Tantalum Clusters: Catalyst for Alkane Conversion

    SciTech Connect (OSTI)

    Nemana ,S.; Gates, B.

    2006-01-01

    Silica-supported tantalum clusters (on average, approximately tritantalum) were formed by the treatment, in either H{sub 2} or ethane, of adsorbed Ta(CH{sub 2}Ph){sub 5}; the supported catalyst is active for ethane conversion to methane and propane at 523 K, with the used catalyst containing clusters of the same average nuclearity as the precursor.

  2. SPS energy conversion and power management workshop. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-06-01

    In 1977 a four year study, the concept Development and Evaluation Program, was initiated by the US Department of Energy and the National Aeronautics and Space Administration. As part of this program, a series of peer reviews were carried out within the technical community to allow available information on SPS to be sifted, examined and, if need be, challenged. The SPS Energy Conversion and Power Management Workshop, held in Huntsville, Alabama, February 5 to 7, 1980, was one of these reviews. The results of studies in this particular field were presented to an audience of carefully selected scientists and engineers. This first report summarizes the results of that peer review. It is not intended to be an exhaustive treatment of the subject. Rather, it is designed to look at the SPS energy conversion and power management options in breadth, not depth, to try to foresee any troublesome and/or potentially unresolvable problems and to identify the most promising areas for future research and development. Topics include photovoltaic conversion, solar thermal conversion, and electric power distribution processing and power management. (WHK)

  3. Ultra-Fast Chemical Conversion Surfaces | Department of Energy

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

    1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon pm027_erdemir_2011_p.pdf More Documents & Publications Ultra-Fast Chemical Conversion Surfaces Lubricant-Friendly, Superhard and Low-Friction Coatings by Design Low-Friction Hard Coatings

  4. Business Operations Organization Chart

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

    Office of Business Operations Organization Chart Office of Business Operations Michael Budney, Director Project Management Coordination Office Scott Hine, Director Information and Technology Services Office Steve VonVital, Director (Acting) Workforce Management Office Jennifer Blankenheim, Director Golden Field Office Timothy Meeks, Director

  5. Stirling machine operating experience

    SciTech Connect (OSTI)

    Ross, B.; Dudenhoefer, J.E.

    1991-01-01

    Numerous Stirling machines have been built and operated, but the operating experience of these machines is not well known. It is important to examine this operating experience in detail, because it largely substantiates the claim that Stirling machines are capable of reliable and lengthy lives. The amount of data that exists is impressive, considering that many of the machines that have been built are developmental machines intended to show proof of concept, and were not expected to operate for any lengthy period of time. Some Stirling machines (typically free-piston machines) achieve long life through non-contact bearings, while other Stirling machines (typically kinematic) have achieved long operating lives through regular seal and bearing replacements. In addition to engine and system testing, life testing of critical components is also considered.

  6. Highly coherent red-shifted dispersive wave generation around 1.3??m for efficient wavelength conversion

    SciTech Connect (OSTI)

    Li, Xia; Bi, Wanjun; Chen, Wei; Xue, Tianfeng; Hu, Lili; Liao, Meisong; Gao, Weiqing

    2015-03-14

    This research investigates the mechanism of the optical dispersive wave (DW) and proposes a scheme that can realize an efficient wavelength conversion. In an elaborately designed photonic crystal fiber, a readily available ytterbium laser operating at ?1??m can be transferred to the valuable 1.3??m wavelength range. A low-order soliton is produced to concentrate the energy of the DW into the target wavelength range and improve the degree of coherence. The input chirp is demonstrated to be a factor that enhances the wavelength conversion efficiency. With a positive initial chirp, 76.6% of the pump energy in the fiber can be transferred into a spectral range between 1.24 and 1.4??m. With the use of a grating compressor, it is possible to compress the generated coherent DW of several picoseconds into less than 90?fs.

  7. Carbon Dioxide Conversion to Valuable Chemical Products over Composite Catalytic Systems

    SciTech Connect (OSTI)

    Dagle, Robert A.; Hu, Jianli; Jones, Susanne B.; Wilcox, Wayne A.; Frye, John G.; White, J. F.; Jiang, Juyuan; Wang, Yong

    2013-05-01

    Presented is an experimental study on catalytic conversion of carbon dioxide into methanol, ethanol and acetic acid. Catalysts having different catalytic functions were synthesized and combined in different ways to enhance selectivity to desired products. The combined catalyst system possessed the following functions: methanol synthesis, Fischer-Tropsch synthesis, water-gas-shift and hydrogenation. Results showed that the methods of integrating these catalytic functions played important role in achieving desired product selectivity. It was speculated that if methanol synthesis sites were located adjacent to the C-C chain growth sites, the formation rate of C2 oxygenates would be enhanced. The advantage of using high temperature methanol catalyst PdZnAl in the combined catalyst system was demonstrated. In the presence of PdZnAl catalyst, the combined catalyst system was stable at temperature of 380oC. It was observed that, at high temperature, kinetics favored oxygenate formation. Results implied that the process can be intensified by operating at high temperature using Pd-based methanol synthesis catalyst. Steam reforming of the byproduct organics was demonstrated as a means to provide supplemental hydrogen. Preliminary process design, simulation, and economic analysis of the proposed CO2 conversion process were carried out. Economic analysis indicates how ethanol production cost was affected by the price of CO2 and hydrogen.

  8. Overview of Multi-Kilowatt Free-Piston Stirling Power Conversion Research at GRC

    SciTech Connect (OSTI)

    Geng, Steven M.; Mason, Lee S.; Dyson, Rodger W.; Penswick, L. Barry

    2008-01-21

    As a step towards development of Stirling power conversion for potential use in Fission Surface Power (FSP) systems, a pair of commercially available 1 kW class free-piston Stirling convertors and a pair of commercially available pressure wave generators (which will be plumbed together to create a high power Stirling linear alternator test rig) have been procured for in-house testing at Glenn Research Center. Delivery of both the Stirling convertors and the linear alternator test rig is expected by October, 2007. The 1 kW class free-piston Stirling convertors will be tested at GRC to map and verify performance. The convertors will later be modified to operate with a NaK liquid metal pumped loop for thermal energy input. The high power linear alternator test rig will be used to map and verify high power Stirling linear alternator performance and to develop power management and distribution (PMAD) methods and techniques. This paper provides an overview of the multi-kilowatt free-piston Stirling power conversion work being performed at GRC.

  9. Potential Impacts of Hydrokinetic and Wave Energy Conversion Technologies on Aquatic Environments

    SciTech Connect (OSTI)

    Čada, Glenn F.

    2007-04-01

    A new generation of hydropower technologies, the kinetic hydro and wave energy conversion devices, offers the possibility of generating electricity from the movements of water, without the need for dams and diversions. The Energy Policy Act of 2005 encouraged the development of these sources of renewable energy in the United States, and there is growing interest in deploying them globally. The technologies that would extract electricity from free-flowing streams, estuaries, and oceans have not been widely tested. Consequently, the U.S. Department of Energy convened a workshop to (1) identify the varieties of hydrokinetic energy and wave energy conversion devices and their stages of development, (2) identify where these technologies can best operate, (3) identify the potential environmental issues associated with these technologies and possible mitigation measures, and (4) develop a list of research needs and/or practical solutions to address unresolved environmental issues. The article reviews the results of that workshop, focusing on potential effects on freshwater, estuarine, and marine ecosystems, and we describe recent national and international developments.

  10. Superacid Catalyzed Coal Conversion Chemistry. Final Technical Report, September 1, 1983-September 1, 1986

    DOE R&D Accomplishments [OSTI]

    Olah, G. A.

    1986-01-01

    This research project involved the study of a raw comparatively mild coal conversion process. The goal of the project was to study model systems to understand the basic chemistry involved and to provide a possible effective pretreatment of coal which significantly improves liquefaction-depolymerization under mild conditions. The conversion process operates at relatively low temperatures (170 degrees C) and pressures and uses an easily recyclable, stable superacid catalysts (HF-BF{sub 3}). It consequently offers an attractive alternative to currently available processes. From the present studies it appears that the modification of coal structure by electrophilic alkylation and subsequent reaction of alkylated coal with HF-BF{sub 3}-H{sub 2} system under mild conditions considerably improves the extractability of coal in pyridine and cyclohexane. On the other hand, nitration of coal and its subsequent reaction with HF-BF{sub 3}H{sub 2} decreases the pyridine and cyclohexane extractability. Study of model compounds under conditions identical with the superacidic HF/BF{sub 3}/H{sub 2} system provided significant information about the basic chemistry of the involved cleavage-hydrogenation reactions.

  11. Stirling machine operating experience

    SciTech Connect (OSTI)

    Ross, B.; Dudenhoefer, J.E.

    1994-09-01

    Numerous Stirling machines have been built and operated, but the operating experience of these machines is not well known. It is important to examine this operating experience in detail, because it largely substantiates the claim that stirling machines are capable of reliable and lengthy operating lives. The amount of data that exists is impressive, considering that many of the machines that have been built are developmental machines intended to show proof of concept, and are not expected to operate for lengthy periods of time. Some Stirling machines (typically free-piston machines) achieve long life through non-contact bearings, while other Stirling machines (typically kinematic) have achieved long operating lives through regular seal and bearing replacements. In addition to engine and system testing, life testing of critical components is also considered. The record in this paper is not complete, due to the reluctance of some organizations to release operational data and because several organizations were not contacted. The authors intend to repeat this assessment in three years, hoping for even greater participation.

  12. Micropower chemical fuel-to-electric conversion : a "regenerative flip" hydrogen concentration cell promising near carnot efficiency.

    SciTech Connect (OSTI)

    Wally, Karl

    2006-05-01

    Although battery technology is relatively mature, power sources continue to impose serious limitations for small, portable, mobile, or remote applications. A potentially attractive alternative to batteries is chemical fuel-to-electric conversion. Chemical fuels have volumetric energy densities 4 to 10 times those of batteries. However, realizing this advantage requires efficient chemical fuel-to-electric conversion. Direct electrochemical conversion would be the ideal, but, for most fuels, is generally not within the state-of-the-science. Next best, chemical-to-thermal-to-electric conversion can be attractive if efficiencies can be kept high. This small investigative project was an exploration into the feasibility of a novel hybrid (i.e., thermal-electrochemical) micropower converter of high theoretical performance whose demonstration was thought to be within near-term reach. The system is comprised of a hydrogen concentration electrochemical cell with physically identical hydrogen electrodes as anode and cathode, with each electrode connected to physically identical hydride beds each containing the same low-enthalpy-of-formation metal hydride. In operation, electrical power is generated by a hydrogen concentration differential across the electrochemical cell. This differential is established via coordinated heating and passive cooling of the corresponding hydride source and sink. Heating is provided by the exothermic combustion (i.e., either flame combustion or catalytic combustion) of a chemical fuel. Upon hydride source depletion, the role of source and sink are reversed, heating and cooling reversed, electrodes commutatively reversed, cell operation reversed, while power delivery continues unchanged. This 'regenerative flip' of source and sink hydride beds can be cycled continuously until all available heating fuel is consumed. Electricity is efficiently generated electrochemically, but hydrogen is not consumed, rather the hydrogen is regeneratively cycled as an electrochemical 'working fluid'.

  13. Climate Data Operators (CDO)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Climate Data Operators (CDO) Climate Data Operators (CDO) Description and Overview CDO is a large tool set for working on climate data. NetCDF 3/4, GRIB including SZIP compression, EXTRA, SERVICE and IEG are supported as IO-formats. Apart from that cdo can be used to analyse any kind gridded data not related to climate science. CDO has very small memory requirements and can process files larger than the physical memory. How to Use CDO module load cdo cdo [Options] Operators ... Further

  14. Operability and Emissions from a Medium-Duty Fleet Operating...

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

    Operability and Emissions from a Medium-Duty Fleet Operating with GTL Fuel and Catalyzed DPFs Operability and Emissions from a Medium-Duty Fleet Operating with GTL Fuel and ...

  15. Super-radiant backward-wave oscillators with enhanced power conversion

    SciTech Connect (OSTI)

    Rostov, V. V.; Savilov, A. V.

    2013-02-15

    We propose a method for a very significant increase of the peak power of a backward-wave electron oscillator operating in the non-stationary regime of the super-radiation of short rf pulses. This method is based on sectioning: a regular self-oscillator section is supported with a section providing amplification of the super-radiant pulse. Profiling of a resonant parameter in the amplifying section is used to avoid the parasitic self-excitation and to increase the efficiency of the electron-wave interaction. In such systems, the conversion factor (the ratio between the rf pulse power and the electron beam power) can achieve a few hundred percent.

  16. Preliminary Results of Ancillary Safety Analyses Supporting TREAT LEU Conversion Activities

    SciTech Connect (OSTI)

    Brunett, A. J.; Fei, T.; Strons, P. S.; Papadias, D. D.; Hoffman, E. A.; Kontogeorgakos, D. C.; Connaway, H. M.; Wright, A. E.

    2015-10-01

    The Transient Reactor Test Facility (TREAT), located at Idaho National Laboratory (INL), is a test facility designed to evaluate the performance of reactor fuels and materials under transient accident conditions. The facility, an air-cooled, graphite-moderated reactor designed to utilize fuel containing high-enriched uranium (HEU), has been in non-operational standby status since 1994. Currently, in support of the missions of the Department of Energy (DOE) National Nuclear Security Administration (NNSA) Material Management and Minimization (M3) Reactor Conversion Program, a new core design is being developed for TREAT that will utilize low-enriched uranium (LEU). The primary objective of this conversion effort is to design an LEU core that is capable of meeting the performance characteristics of the existing HEU core. Minimal, if any, changes are anticipated for the supporting systems (e.g. reactor trip system, filtration/cooling system, etc.); therefore, the LEU core must also be able to function with the existing supporting systems, and must also satisfy acceptable safety limits. In support of the LEU conversion effort, a range of ancillary safety analyses are required to evaluate the LEU core operation relative to that of the existing facility. These analyses cover neutronics, shielding, and thermal hydraulic topics that have been identified as having the potential to have reduced safety margins due to conversion to LEU fuel, or are required to support the required safety analyses documentation. The majority of these ancillary tasks have been identified in [1] and [2]. The purpose of this report is to document the ancillary safety analyses that have been performed at Argonne National Laboratory during the early stages of the LEU design effort, and to describe ongoing and anticipated analyses. For all analyses presented in this report, methodologies are utilized that are consistent with, or improved from, those used in analyses for the HEU Final Safety Analysis Report (FSAR) [3]. Depending on the availability of historical data derived from HEU TREAT operation, results calculated for the LEU core are compared to measurements obtained from HEU TREAT operation. While all analyses in this report are largely considered complete and have been reviewed for technical content, it is important to note that all topics will be revisited once the LEU design approaches its final stages of maturity. For most safety significant issues, it is expected that the analyses presented here will be bounding, but additional calculations will be performed as necessary to support safety analyses and safety documentation. It should also be noted that these analyses were completed as the LEU design evolved, and therefore utilized different LEU reference designs. Preliminary shielding, neutronic, and thermal hydraulic analyses have been completed and have generally demonstrated that the various LEU core designs will satisfy existing safety limits and standards also satisfied by the existing HEU core. These analyses include the assessment of the dose rate in the hodoscope room, near a loaded fuel transfer cask, above the fuel storage area, and near the HEPA filters. The potential change in the concentration of tramp uranium and change in neutron flux reaching instrumentation has also been assessed. Safety-significant thermal hydraulic items addressed in this report include thermally-induced mechanical distortion of the grid plate, and heating in the radial reflector.

  17. Design of generic coal conversion facilities: Indirect coal liquefaction, Fischer-Tropsch synthesis

    SciTech Connect (OSTI)

    Not Available

    1991-10-01

    A comprehensive review of Fischer-Tropsch (F-T) technology, including fixed, fluidized, and bubble column reactors, was undertaken in order to develop an information base before initiating the design of the Fischer-Tropsch indirect liquefaction PDU as a part of the Generic Coal Conversion Facilities to be built at the Pittsburgh Energy Technology Center (PETC). The pilot plant will include a fixed bed and slurry bubble column reactor for the F-T mode of operation. The review encompasses current status of both these technologies, their key variables, catalyst development, future directions, and potential improvement areas. However, more emphasis has been placed on the slurry bubble column reactor since this route is likely to be the preferred technology for commercialization, offering process advantages and, therefore, better economics than fixed and fluidized bed approaches.

  18. Operating plan FY 1998

    SciTech Connect (OSTI)

    1997-10-01

    This document is the first edition of Argonne`s new Operating Plan. The Operating Plan complements the strategic planning in the Laboratory`s Institutional Plan by focusing on activities that are being pursued in the immediate fiscal year, FY 1998. It reflects planning that has been done to date, and it will serve in the future as a resource and a benchmark for understanding the Laboratory`s performance. The heart of the Institutional Plan is the set of major research initiatives that the Laboratory is proposing to implement in future years. In contrast, this Operating Plan focuses on Argonne`s ongoing R&D programs, along with cost-saving measures and other improvements being implemented in Laboratory support operations.

  19. Continuity of Operations

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2005-01-14

    The notice defines requirements and responsibilities for continuity of operations planning within the DOE to ensure the capability to continue essential Departmental functions across a wide range of all hazard emergencies. Does not cancel other directives.

  20. CH Packaging Operations Manual

    SciTech Connect (OSTI)

    Washington TRU Solutions LLC

    2005-06-13

    This procedure provides instructions for assembling the CH Packaging Drum payload assembly, Standard Waste Box (SWB) assembly, Abnormal Operations and ICV and OCV Preshipment Leakage Rate Tests on the packaging seals, using a nondestructive Helium (He) Leak Test.

  1. Reduction/Transformation Operators

    Energy Science and Technology Software Center (OSTI)

    2006-09-01

    RTOp (reduction/transformation operators) is a collection of C++ software that provides the basic mechanism for implementinig vector operations in a flexible and efficient manner. This is the main interface utilized by Thyra to allow for the specification of specific vector reduction and/or transformation operations. The RTOp package contains three different types of software. (a) a small number of interoperability interfaces. (b) support software including code for the parallel SPMD mode based on only Teuchos::Comm(and notmore » MPl directly(, and (c) a library of pre-implemented RTOp subclasses for everything from simple AXPYs and norms, to more specialized vector operations. RTOp allows an algorithm developer to implement their own RTOp subclasses in a way that is independent from any specific serial, parallel, out-of-core or other type of vector implementation. RTOp is a required package by Thyra and MOOCHO. (c)« less

  2. Conduct of Operations

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2010-06-29

    This Order defines the requirements for establishing and implementing Conduct of Operations Programs at Department of Energy (DOE), including National Nuclear Security Administration (NNSA), facilities and projects. Cancels DOE O 5480.19. Admin Chg 1, 6-25-13

  3. Protection Program Operations

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2014-10-14

    This Order establishes requirements for the management and operation of the Department of Energy (DOE) Federal Protective Forces (FPF), Contractor Protective Forces (CPF), and the Physical Security of property and personnel under the cognizance of DOE.

  4. Operations Security Program

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1992-04-30

    To establish policies, responsibilities and authorities for implementing and sustaining the Department of Energy (DOE) Operations Security (OPSEC) Program. Cancels DOE O 5632.3B. Canceled by DOE O 471.2 of 9-28-1995.

  5. Corporate Operating Experience Program

    Broader source: Energy.gov [DOE]

    The DOE Corporate Operating Experience Program helps to prevent the recurrence of significant adverse events/trends by sharing performance information, lessons learned and good practices across the DOE complex.

  6. Conduct of Operations

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2010-06-29

    This Order defines the requirements for establishing and implementing Conduct of Operations Programs at Department of Energy (DOE), including National Nuclear Security Administration (NNSA), facilities and projects. Admin Chg 2, dated 12-3-14, supersedes Admin Chg 1.

  7. Oak Ridge Operations.

    Office of Legacy Management (LM)

    4s - 22 Department of Energy Oak Ridge Operations. SI9J>liB P.O. Box 2001 Oak Ridge. Tennessee 37831-8723 October 21, 1994 Mr. Charles A. Duritsa Regional Director...

  8. Operations & Administration - JCAP

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Our-Peopple-Hero_v2.jpg Operations & Administration Who We Are JCAP Mission JCAP At A Glance Fact Sheets Organizational Chart Recent Science Technology Transfer Awards & Honors Senior Management Scientific Leadership Researchers Governance & Advisory Boards Operations & Administration Who we are Overview JCAP Mission JCAP At A Glance Fact Sheets Organizational Chart Our Achievements Recent Science Technology Transfer Awards & Honors Our People Senior Management Scientific

  9. Crane Operation Training

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Crane Operational Training Crane Operational Safety Test NOTE: All Training and Testing Material is for LSU CAMD Users ONLY! Crane Training - Information Reduces Risk Crane training is required for all individuals who wish to use the crane at CAMD. This manual is presented as a guide and may be used for retraining/re-certification only. Initial training in crane safety requires an appointment made through CAMD safety and a minimum of a two hour time commitment to learn about general crane safety

  10. Operations | The Ames Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Operations Welcome to the Ames Laboratory and the operations pages of our website. Our website has recently been revised starting with the front page, the science division pages and a few pages needed for public interface. If you find that the pages you need are not available please contact the Manager in charge (i.e., Purchasing, Sponsored Programs, etc.) and we will get you the information you need.

  11. Progress from DOE EF RC: Solid-State Solar-Thermal Energy Conversion Center

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

    (S3TEC ) | Department of Energy from DOE EF RC: Solid-State Solar-Thermal Energy Conversion Center (S3TEC ) Progress from DOE EF RC: Solid-State Solar-Thermal Energy Conversion Center (S3TEC ) Introduction to the solid-state solar-thermal energy conversion center plus discussion on phonon transport and solar thermoelectric energy conversion PDF icon chen.pdf More Documents & Publications Solar Thermoelectric Energy Conversion Solar Thermoelectric Energy Conversion DOE Office of Basic

  12. An assessment of ocean thermal energy conversion as an advanced electric generation methodology

    SciTech Connect (OSTI)

    Heydt, G.T. . School of Electrical Engineering)

    1993-03-01

    Ocean thermal energy conversion (OTEC) is a process that employs the temperature difference between surface and deep ocean water to alternately evaporate and condense a working fluid. In the open-cycle OTEC configuration, the working fluid is seawater. In the closed-cycle configuration, a working fluid such as propane is used. In this paper, OTEC is assessed for its practical merits for electric power generation. The process is not new--and its history is reviewed. Because the OTEC principle operates under a small net temperature difference regime, rather large amounts of seawater and working fluid are required. The energy requirements for pumping these fluids may be greater than the energy recovered from the OTEC engine itself. The concept of net power production is discussed. The components of a typical OTEC plant are discussed with emphasis on the evaporator heat exchanger. Operation of an OTEC electric generating station is discussed, including transient operation. Perhaps the most encouraging aspect of OTEC is the recent experiments and efforts at the Natural Energy Laboratory--Hawaii (NELH). The NELH work is summarized in the paper. Remarks are made on bottlenecks and the future of OTEC as an advanced electric generation methodology.

  13. Technician's Perspective on an Ever-Changing Research Environment: Catalytic Conversion of Biomass to Fuels

    SciTech Connect (OSTI)

    Thibodeaux, J.; Hensley, J.

    2013-01-01

    The biomass thermochemical conversion platform at the National Renewable Energy Laboratory (NREL) develops and demonstrates processes for the conversion of biomass to fuels and chemicals including gasification, pyrolysis, syngas clean-up, and catalytic synthesis of alcohol and hydrocarbon fuels. In this talk, I will discuss the challenges of being a technician in this type of research environment, including handling and working with catalytic materials and hazardous chemicals, building systems without being given all of the necessary specifications, pushing the limits of the systems through ever-changing experiments, and achieving two-way communication with engineers and supervisors. I will do this by way of two examples from recent research. First, I will describe a unique operate-to-failure experiment in the gasification of chicken litter that resulted in the formation of a solid plug in the gasifier, requiring several technicians to chisel the material out. Second, I will compare and contrast bench scale and pilot scale catalyst research, including instances where both are conducted simultaneously from common upstream equipment. By way of example, I hope to illustrate the importance of researchers 1) understanding the technicians' perspective on tasks, 2) openly communicating among all team members, and 3) knowing when to voice opinions. I believe the examples in this talk will highlight the crucial role of a technical staff: skills attained by years of experience to build and operate research and production systems. The talk will also showcase the responsibilities of NREL technicians and highlight some interesting behind-the-scenes work that makes data generation from NREL's thermochemical process development unit possible.

  14. Modeling Energy Recovery Using Thermoelectric Conversion Integrated with an Organic Rankine Bottoming Cycle

    SciTech Connect (OSTI)

    Miller, Erik W.; Hendricks, Terry J.; Peterson, Richard B.

    2009-07-01

    Hot engine exhaust represents a resource that is often rejected to the environment without further utilization. This resource is most prevalent in the transportation sector, but stationary engine-generator systems also typically do not utilize this resource. Engine exhaust is a source of high grade thermal energy that can potentially be utilized by various approaches to produce electricity or to drive heating and cooling systems. This paper describes a model system that employs thermoelectric conversion as a topping cycle integrated with an organic Rankine bottoming cycle for waste heat utilization. This approach is being developed to fully utilize the thermal energy contained in hot exhaust streams. The model is composed of a high temperature heat exchanger which extracts thermal energy for driving the thermoelectric conversion elements. However, substantial sensible heat remains in the exhaust stream after emerging from the heat exchanger. The model incorporates a closely integrated bottoming cycle to utilize this remaining thermal energy in the exhaust stream. The model has many interacting parameters that define combined system quantities such as overall output power, efficiency, and total energy utilization factors. In addition, the model identifies a maximum power operating point for the system. That is, the model can identify the optimal amount of heat to remove from the exhaust flow to run through the thermoelectric elements. Removing too much or too little heat from the exhaust stream in this stage will reduce overall cycle performance. The model has been developed such that heat exchanger UAh values, thermal resistances, ZT values, and multiple thermoelectric elements can be investigated in the context of system operation. The model also has the ability to simultaneously determine the effect of each cycle design parameter on the performance of the overall system, thus giving the ability to utilize as much waste heat as possible. Key analysis results are presented showing the impact of critical design parameters on power output, system performance and inter-relationships between design parameters in governing performance.

  15. Method for direct conversion of gaseous hydrocarbons to liquids

    DOE Patents [OSTI]

    Kong, Peter C.; Lessing, Paul A.

    2006-03-07

    A chemical reactor for direct conversion of hydrocarbons includes a dielectric barrier discharge plasma cell and a solid oxide electrochemical cell in fluid communication therewith. The discharge plasma cell comprises a pair of electrodes separated by a dielectric material and passageway therebetween. The electrochemical cell comprises a mixed-conducting solid oxide electrolyte membrane tube positioned between a porous cathode and a porous anode, and a gas inlet tube for feeding oxygen containing gas to the porous cathode. An inlet is provided for feeding hydrocarbons to the passageway of the discharge plasma cell, and an outlet is provided for discharging reaction products from the reactor. A packed bed catalyst may optionally be used in the reactor to increase efficiency of conversion. The reactor can be modified to allow use of a light source for directing ultraviolet light into the discharge plasma cell and the electrochemical cell.

  16. Method for regeneration and activity improvement of syngas conversion catalyst

    DOE Patents [OSTI]

    Lucki, Stanley J. (Runnemede, NJ); Brennan, James A. (Cherry Hill, NJ)

    1980-01-01

    A method is disclosed for the treatment of single particle iron-containing syngas (synthes.s gas) conversion catalysts comprising iron, a crystalline acidic aluminosilicate zeolite having a silica to alumina ratio of at least 12, a pore size greater than about 5 Angstrom units and a constraint index of about 1-12 and a matrix. The catalyst does not contain promoters and the treatment is applicable to either the regeneration of said spent single particle iron-containing catalyst or for the initial activation of fresh catalyst. The treatment involves air oxidation, hydrogen reduction, followed by a second air oxidation and contact of the iron-containing single particle catalyst with syngas prior to its use for the catalytic conversion of said syngas. The single particle iron-containing catalysts are prepared from a water insoluble organic iron compound.

  17. Conversion of direct process high-boiling residue to monosilanes

    DOE Patents [OSTI]

    Brinson, Jonathan Ashley (Vale of Glamorgan, GB); Crum, Bruce Robert (Madison, IN); Jarvis, Jr., Robert Frank (Midland, MI)

    2000-01-01

    A process for the production of monosilanes from the high-boiling residue resulting from the reaction of hydrogen chloride with silicon metalloid in a process typically referred to as the "direct process." The process comprises contacting a high-boiling residue resulting from the reaction of hydrogen chloride and silicon metalloid, with hydrogen gas in the presence of a catalytic amount of aluminum trichloride effective in promoting conversion of the high-boiling residue to monosilanes. The present process results in conversion of the high-boiling residue to monosilanes. At least a portion of the aluminum trichloride catalyst required for conduct of the process may be formed in situ during conduct of the direct process and isolation of the high-boiling residue.

  18. Calibration of charge state conversion surfaces for neutral particle detectors

    SciTech Connect (OSTI)

    Wahlstroem, P.; Scheer, J. A.; Wurz, P.; Hertzberg, E.; Fuselier, S. A.

    2008-08-01

    Molecular oxygen and hydrogen ions were scattered off hydrogen terminated diamondlike carbon (DLC) charge state conversion surfaces at incident grazing angles. The energy range of the scattered particles was 390-1000 eV, and the surface roughness of the DLC surface was of the order of 1 A rms. For all surfaces almost equal angular scattering and negative ion fractions were found within the uncertainties of the measurement. This result supports the fact that charge state conversion with DLC surfaces is a reliable technology for neutral particle sensing instruments. Furthermore, these instruments can work in the laboratory as well as in the harsh environment on board a satellite.The surfaces measured here are used in the IBEX-lo sensor, a neutral particle sensing instrument on the NASA IBEX mission, which is scheduled for launch into orbit around Earth in July 2008.

  19. Thermal Conversion of Methane to Acetylene Final Report

    SciTech Connect (OSTI)

    Fincke, J.R.; Anderson, R.P.; Hyde, T.; Wright, R.; Bewley, R.; Haggard, D.C.; Swank, W.D.

    2000-01-31

    This report describes the experimental demonstration of a process for the direct thermal conversion of methane to acetylene. The process utilizes a thermal plasma heat source to dissociation products react to form a mixture of acetylene and hydrogen. The use of a supersonic expansion of the hot gas is investigated as a method of rapidly cooling (quenching) the product stream to prevent further reaction or thermal decomposition of the acetylene which can lower the overall efficiency of the process.

  20. Better Biomass Conversion with Recyclable GVL Solvent - Energy Innovation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Portal Better Biomass Conversion with Recyclable GVL Solvent Great Lakes Bioenergy Research Center Contact GLBRC About This Technology Technology Marketing Summary To recover useful carbohydrates locked in biomass, molecular bonds must be broken while avoiding further reaction of the resulting glucose and xylose sugars. This is a challenge because glucose can degrade quicker than it is produced. Fast, hot reactions try to minimize such degradation, but are impractical. Expensive catalysts