National Library of Energy BETA

Sample records for unplanned engine repairs

  1. Laser engineered net shaping (LENS) for the repair and modification of NWC metal components.

    SciTech Connect

    Atwood, Clinton J.; Smugeresky, John E. (Sandia National Labs, Livermore,CA); Gill, David Dennis

    2006-11-01

    Laser Engineered Net Shaping{trademark} (LENS{reg_sign}) is a layer additive manufacturing process that creates fully dense metal components using a laser, metal powder, and a computer solid model. This process has previously been utilized in research settings to create metal components and new material alloys. The ''Qualification of LENS for the Repair and Modification of Metal NWC Components'' project team has completed a Technology Investment project to investigate the use of LENS for repair of high rigor components. The team submitted components from four NWC sites for repair or modification using the LENS process. These components were then evaluated for their compatibility to high rigor weapons applications. The repairs included hole filling, replacement of weld lips, addition of step joints, and repair of surface flaws and gouges. The parts were evaluated for mechanical properties, corrosion resistance, weldability, and hydrogen compatibility. This document is a record of the LENS processing of each of these component types and includes process parameters, build strategies, and lessons learned. Through this project, the LENS process was shown to successfully repair or modify metal NWC components.

  2. Digital Twins of physical assets prevents unplanned downtime | GE Global

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Research a 'Digital Twin' for physical assets can help achieve no unplanned downtime 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) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) How a 'Digital Twin' for physical assets can help achieve no unplanned downtime Mark Grabb and Matt Nielsen, data scientists at GE Global Research, explain the importance of data

  3. Notice of Unplanned Outage at the Mirant Potomac River Plant | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Unplanned Outage at the Mirant Potomac River Plant Notice of Unplanned Outage at the Mirant Potomac River Plant Docket No. EO-05-01. Order No. 202-05-03: Pursuant to the United States Department of Energy ("DOE") Order No_ 202-05-3, issued December 20, 2005 ("DOE Potomac River Order"), Pepco hereby files this notice of an unplanned outage of one of the 230kV circuits serving the Potomac River Substation, and through that station, the District of Columbia. Notice

  4. Component Repair Times Obtained from MSPI Data

    SciTech Connect

    Eide, Steven A.

    2015-05-01

    Information concerning times to repair or restore equipment to service given a failure is valuable to probabilistic risk assessments (PRAs). Examples of such uses in modern PRAs include estimation of the probability of failing to restore a failed component within a specified time period (typically tied to recovering a mitigating system before core damage occurs at nuclear power plants) and the determination of mission times for support system initiating event (SSIE) fault tree models. Information on equipment repair or restoration times applicable to PRA modeling is limited and dated for U.S. commercial nuclear power plants. However, the Mitigating Systems Performance Index (MSPI) program covering all U.S. commercial nuclear power plants provides up-to-date information on restoration times for a limited set of component types. This paper describes the MSPI program data available and analyzes the data to obtain median and mean component restoration times as well as non-restoration cumulative probability curves. The MSPI program provides guidance for monitoring both planned and unplanned outages of trains of selected mitigating systems deemed important to safety. For systems included within the MSPI program, plants monitor both train UA and component unreliability (UR) against baseline values. If the combined system UA and UR increases sufficiently above established baseline results (converted to an estimated change in core damage frequency or CDF), a “white” (or worse) indicator is generated for that system. That in turn results in increased oversight by the US Nuclear Regulatory Commission (NRC) and can impact a plant’s insurance rating. Therefore, there is pressure to return MSPI program components to service as soon as possible after a failure occurs. Three sets of unplanned outages might be used to determine the component repair durations desired in this article: all unplanned outages for the train type that includes the component of interest, only

  5. Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Includes Engineering Standards Manual, Master Specifications Index, Drafting Manual, Design Guides, and more. IHS Standards Expert login information Collections include ANSI,...

  6. Turbine repair process, repaired coating, and repaired turbine component

    SciTech Connect

    Das, Rupak; Delvaux, John McConnell; Garcia-Crespo, Andres Jose

    2015-11-03

    A turbine repair process, a repaired coating, and a repaired turbine component are disclosed. The turbine repair process includes providing a turbine component having a higher-pressure region and a lower-pressure region, introducing particles into the higher-pressure region, and at least partially repairing an opening between the higher-pressure region and the lower-pressure region with at least one of the particles to form a repaired turbine component. The repaired coating includes a silicon material, a ceramic matrix composite material, and a repaired region having the silicon material deposited on and surrounded by the ceramic matrix composite material. The repaired turbine component a ceramic matrix composite layer and a repaired region having silicon material deposited on and surrounded by the ceramic matrix composite material.

  7. engineering

    National Nuclear Security Administration (NNSA)

    an award last month for his 3D printing innovation. It could revolutionize additive manufacturing.

    Lawrence Livermore Lab engineer Bryan Moran wasn't necessarily...

  8. Motor Repair Tech Brief

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Motor Repair Tech Brief u Why do motors fail? u When should you repair instead of replace? u How can reliability and efficiency be assured in a repair? This Tech Brief applies to: Random Wound Induction Motors Designs A-E Acknowledgements The following series of Repair Documents-The Service Center Evaluation Guide, Selected Bibliography on Electric Motor Repair, Model Repair Specifications for Low Voltage Motors, and Motor Repair Tech Brief- were produced by the U.S. Department of Energy's

  9. ENGINEERING

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ENGINEERING the Future of ENERGY Regional University Alliance National Energy Technology Laboratory Office of Research and Development The Future of Energy The time to redraw America's energy blueprint is now. The challenges we face today are the most critical in decades-from the impact of energy use on global ecosystems to the difficulties of efficiently harnessing our natural resources. Because energy is fundamental to human welfare, we must develop sustainable systems that make clean,

  10. INTERNAL REPAIR OF PIPELINES

    SciTech Connect

    Robin Gordon; Bill Bruce; Nancy Porter; Mike Sullivan; Chris Neary

    2003-05-01

    The two broad categories of deposited weld metal repair and fiber-reinforced composite repair technologies were reviewed for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Preliminary test programs were developed for both deposited weld metal repairs and for fiber-reinforced composite repair. To date, all of the experimental work pertaining to the evaluation of potential repair methods has focused on fiber-reinforced composite repairs. Hydrostatic testing was also conducted on four pipeline sections with simulated corrosion damage: two with composite liners and two without.

  11. Rapid road repair vehicle

    DOEpatents

    Mara, Leo M.

    1998-01-01

    Disclosed is a rapid road repair vehicle capable of moving over a surface to be repaired at near normal posted traffic speeds to scan for and find an the high rate of speed, imperfections in the pavement surface, prepare the surface imperfection for repair by air pressure and vacuum cleaning, applying a correct amount of the correct patching material to effect the repair, smooth the resulting repaired surface, and catalog the location and quality of the repairs for maintenance records of the road surface. The rapid road repair vehicle can repair surface imperfections at lower cost, improved quality, at a higher rate of speed than was was heretofor possible, with significantly reduced exposure to safety and health hazards associated with this kind of road repair activities in the past.

  12. Rapid road repair vehicle

    DOEpatents

    Mara, L.M.

    1998-05-05

    Disclosed is a rapid road repair vehicle capable of moving over a surface to be repaired at near normal posted traffic speeds to scan for and find at the high rate of speed, imperfections in the pavement surface, prepare the surface imperfection for repair by air pressure and vacuum cleaning, applying a correct amount of the correct patching material to effect the repair, smooth the resulting repaired surface, and catalog the location and quality of the repairs for maintenance records of the road surface. The rapid road repair vehicle can repair surface imperfections at lower cost, improved quality, at a higher rate of speed than was not heretofor possible, with significantly reduced exposure to safety and health hazards associated with this kind of road repair activities in the past. 2 figs.

  13. Service and Repair Work

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Jupiter Laser Facility, please contact Sean Holte (2-3905, pager 05312). Notify Brent Stuart and Beth Mariotti whenever you bring a visitor to inspect, service, or repair...

  14. Repair of hydroprocessing reactors

    SciTech Connect

    Niccolls, E.H.; Imgram, A.G.; Bagdasarian, A.J.

    1995-12-01

    In this paper the authors very briefly review the types of damage observed and repairs performed in hydroprocessing reactors. The authors will summarize the fundamental damage mechanisms, and where in the reactors they have needed to make repairs over the years. The era from the 1960`s through about 1990 will be briefly discussed. They describe in more detail repairs undertaken in the 1990`s. Finally, they will note important technical issues their industry faces regarding repairs, and the long term reliable operation of these vessels.

  15. INTERNAL REPAIR OF PIPELINES

    SciTech Connect

    Bill Bruce; Nancy Porter; George Ritter; Matt Boring; Mark Lozev; Ian Harris; Bill Mohr; Dennis Harwig; Robin Gordon; Chris Neary; Mike Sullivan

    2005-07-20

    The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without

  16. INTERNAL REPAIR OF PIPELINES

    SciTech Connect

    Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

    2004-12-31

    The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without

  17. INTERNAL REPAIR OF PIPELINES

    SciTech Connect

    Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

    2004-08-17

    The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners

  18. EUVL Mask Blank Repair

    SciTech Connect

    Barty, A; Mirkarimi, P; Stearns, D G; Sweeney, D; Chapman, H N; Clift, M; Hector, S; Yi, M

    2002-05-22

    EUV mask blanks are fabricated by depositing a reflective Mo/Si multilayer film onto super-polished substrates. Small defects in this thin film coating can significantly alter the reflected field and introduce defects in the printed image. Ideally one would want to produce defect-free mask blanks; however, this may be very difficult to achieve in practice. One practical way to increase the yield of mask blanks is to effectively repair multilayer defects, and to this effect they present two complementary defect repair strategies for use on multilayer-coated EUVL mask blanks. A defect is any area on the mask which causes unwanted variations in EUV dose in the aerial image obtained in a printing tool, and defect repair is correspondingly defined as any strategy that renders a defect unprintable during exposure. The term defect mitigation can be adopted to describe any strategy which renders a critical defect non-critical when printed, and in this regard a non-critical defect is one that does not adversely affect device function. Defects in the patterned absorber layer consist of regions where metal, typically chrome, is unintentionally added or removed from the pattern leading to errors in the reflected field. There currently exists a mature technology based on ion beam milling and ion beam assisted deposition for repairing defects in the absorber layer of transmission lithography masks, and it is reasonable to expect that this technology will be extended to the repair of absorber defects in EUVL masks. However, techniques designed for the repair of absorber layers can not be directly applied to the repair of defects in the mask blank, and in particular the multilayer film. In this paper they present for the first time a new technique for the repair of amplitude defects as well as recent results on the repair of phase defects.

  19. Rapid road repair vehicle

    DOEpatents

    Mara, Leo M.

    1999-01-01

    Disclosed are improvments to a rapid road repair vehicle comprising an improved cleaning device arrangement, two dispensing arrays for filling defects more rapidly and efficiently, an array of pre-heaters to heat the road way surface in order to help the repair material better bond to the repaired surface, a means for detecting, measuring, and computing the number, location and volume of each of the detected surface imperfection, and a computer means schema for controlling the operation of the plurality of vehicle subsystems. The improved vehicle is, therefore, better able to perform its intended function of filling surface imperfections while moving over those surfaces at near normal traffic speeds.

  20. INTERNAL REPAIR OF PIPELINES

    SciTech Connect

    Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; Nancy Porter; Mike Sullivan; Chris Neary

    2004-04-12

    The two broad categories of deposited weld metal repair and fiber-reinforced composite liner repair technologies were reviewed for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Preliminary test programs were developed for both deposited weld metal repair and for fiber-reinforced composite liner repair. Evaluation trials have been conducted using a modified fiber-reinforced composite liner provided by RolaTube and pipe sections without liners. All pipe section specimens failed in areas of simulated damage. Pipe sections containing fiber-reinforced composite liners failed at pressures marginally greater than the pipe sections without liners. The next step is to evaluate a liner material with a modulus of elasticity approximately 95% of the modulus of elasticity for steel. Preliminary welding parameters were developed for deposited weld metal repair in preparation of the receipt of Pacific Gas & Electric's internal pipeline welding repair system (that was designed specifically for 559 mm (22 in.) diameter pipe) and the receipt of 559 mm (22 in.) pipe sections from Panhandle Eastern. The next steps are to transfer welding parameters to the PG&E system and to pressure test repaired pipe sections to failure. A survey of pipeline operators was conducted to better understand the needs and performance requirements of the natural gas transmission industry regarding internal repair. Completed surveys contained the following principal conclusions: (1) Use of internal weld repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling (HDD) when a new bore must be created to

  1. Engineering Technician

    Energy.gov [DOE]

    Alternate Title(s):Civil Engineering Technician; Electrical Engineering Technician; Mechanical Engineering Technician; Environmental Engineering Technician

  2. Aircraft Propeller Hub Repair

    SciTech Connect

    Muth, Thomas R.; Peter, William H.

    2015-02-13

    The team performed a literature review, conducted residual stress measurements, performed failure analysis, and demonstrated a solid state additive manufacturing repair technique on samples removed from a scrapped propeller hub. The team evaluated multiple options for hub repair that included existing metal buildup technologies that the Federal Aviation Administration (FAA) has already embraced, such as cold spray, high velocity oxy-fuel deposition (HVOF), and plasma spray. In addition the team helped Piedmont Propulsion Systems, LLC (PPS) evaluate three potential solutions that could be deployed at different stages in the life cycle of aluminum alloy hubs, in addition to the conventional spray coating method for repair. For new hubs, a machining practice to prevent fretting with the steel drive shaft was recommended. For hubs that were refurbished with some material remaining above the minimal material condition (MMC), a silver interface applied by an electromagnetic pulse additive manufacturing method was recommended. For hubs that were at or below the MMC, a solid state additive manufacturing technique using ultrasonic welding (UW) of thin layers of 7075 aluminum to the hub interface was recommended. A cladding demonstration using the UW technique achieved mechanical bonding of the layers showing promise as a viable repair method.

  3. Inspect and Repair Steam Traps

    Energy.gov [DOE]

    This tip sheet on inspecting and repairing steam traps provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  4. Inspect and Repair Steam Traps

    SciTech Connect

    Not Available

    2006-01-01

    This revised ITP tip sheet on inspecting and repairing steam traps provide how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  5. Motor Repair Tech Brief | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Repair Tech Brief Motor Repair Tech Brief This Tech Brief answers: Why do motors fail? When should you repair instead of replace? And how can reliability and efficiency be assured in a repair? Motor Repair Tech Brief (March 2000) (941.96 KB) More Documents & Publications Extend the Operating Life of Your Motor Service Center Evaluation Guide Premium Efficiency Motor Selection and Application Guide - A Handbook for Industry

  6. Selected Bibliography on Electric Motor Repair

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Selected Bibliography on Electric Motor Repair Acknowledgements The following series of Repair Documents-The Service Center Evaluation Guide, Selected Bibliography on Electric Motor Repair, Model Repair Specifications for Low Voltage Motors, and Motor Repair Tech Brief- were produced by the U.S. Department of Energy's Office of Industrial Technologies (OIT) with input from trade associations, consulting companies, manufacturers, non-profit corporations, and others. OIT would like to thank the

  7. Selected Bibliography on Electric Motor Repair | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Selected Bibliography on Electric Motor Repair Selected Bibliography on Electric Motor Repair The following series of repair documents related to electric motors were produced by...

  8. Final report [DNA Repair and Mutagenesis - 1999

    SciTech Connect

    Walker, Graham C.

    2001-05-30

    The meeting, titled ''DNA Repair and Mutagenesis: Mechanism, Control, and Biological Consequences'', was designed to bring together the various sub-disciplines that collectively comprise the field of DNA Repair and Mutagenesis. The keynote address was titled ''Mutability Doth Play Her Cruel Sports to Many Men's Decay: Variations on the Theme of Translesion Synthesis.'' Sessions were held on the following themes: Excision repair of DNA damage; Transcription and DNA excision repair; UmuC/DinB/Rev1/Rad30 superfamily of DNA polymerases; Cellular responses to DNA damage, checkpoints, and damage tolerance; Repair of mismatched bases, mutation; Genome-instability, and hypermutation; Repair of strand breaks; Replicational fidelity, and Late-breaking developments; Repair and mutation in challenging environments; and Defects in DNA repair: consequences for human disease and aging.

  9. Alternatives Analysis Amchitka Island Mud Pit Cap Repair, Amchitka, Alaska January 2016

    SciTech Connect

    Darr, Paul S.

    2016-01-01

    The U.S. Department of Energy (DOE) Office of Legacy Management (LM) manages the Nevada Offsites program, which includes a series of reclaimed drilling mud impoundments on Amchitka Island, Alaska (Figure 1). Navarro Research and Engineering, Inc. is the Legacy Management Support contractor (the Contractor) for LM. The Contractor has procured Tetra Tech, Inc. to provide engineering support to the Amchitka mud pit reclamation project. The mud pit caps were damaged during a 7.9-magnitude earthquake that occurred in 2014. The goals of the current project are to investigate conditions at the mud pit impoundments, identify feasible alternatives for repair of the cover systems and the contents, and estimate relative costs of repair alternatives. This report presents descriptions of the sites and past investigations, existing conditions, summaries of various repair/mitigation alternatives, and direct, unburdened, order-of-magnitude (-15% to +50%) associated costs.

  10. Development and validation of bonded composite doubler repairs for commercial aircraft.

    SciTech Connect

    Roach, Dennis Patrick; Rackow, Kirk A.

    2007-07-01

    A typical aircraft can experience over 2,000 fatigue cycles (cabin pressurizations) and even greater flight hours in a single year. An unavoidable by-product of aircraft use is that crack, impact, and corrosion flaws develop throughout the aircraft's skin and substructure elements. Economic barriers to the purchase of new aircraft have placed even greater demands on efficient and safe repair methods. The use of bonded composite doublers offers the airframe manufacturers and aircraft maintenance facilities a cost effective method to safely extend the lives of their aircraft. Instead of riveting multiple steel or aluminum plates to facilitate an aircraft repair, it is now possible to bond a single Boron-Epoxy composite doubler to the damaged structure. The FAA's Airworthiness Assurance Center at Sandia National Labs (AANC), Boeing, and Federal Express completed a pilot program to validate and introduce composite doubler repair technology to the U.S. commercial aircraft industry. This project focused on repair of DC-10 fuselage structure and its primary goal was to demonstrate routine use of this repair technology using niche applications that streamline the design-to-installation process. As composite doubler repairs gradually appear in the commercial aircraft arena, successful flight operation data is being accumulated. These commercial aircraft repairs are not only demonstrating the engineering and economic advantages of composite doubler technology but they are also establishing the ability of commercial maintenance depots to safely adopt this repair technique. This report presents the array of engineering activities that were completed in order to make this technology available for widespread commercial aircraft use. Focused laboratory testing was conducted to compliment the field data and to address specific issues regarding damage tolerance and flaw growth in composite doubler repairs. Fatigue and strength tests were performed on a simulated wing repair using a

  11. Fabrication Flaw Density and Distribution in the Repairs of Reactor Pressure Vessels

    SciTech Connect

    Schuster, George J.; Doctor, Steven R.; Simonen, Fredric A.

    2006-02-15

    The Pacific Northwest National Laboratory (PNNL) is developing a generalized flaw size and density distribution for the population of U.S. reactor pressure vessels (RPVs). The purpose of the generalized flaw distribution is to predict vessel specific flaw rates for use in probabilistic fracture mechanics calculations that estimate vessel failure probability. Considerable progress has been made on the construction of an engineering data base of fabrication flaws in U.S. nuclear RPVs. The fabrication processes and product forms used to construct U.S. RPVs are represented in the data base. A validation methodology has been developed for characterizing the flaws for size, shape, orientation, and composition. The relevance of construction records has been established for describing fabrication processes and product forms. The fabrication flaws were detected in material removed from cancelled nuclear power plants using high sensitivity nondestructive ultrasonic testing, and validated by other nondestructive evaluation (NDE) techniques, and complemented by destructive testing. This paper describes research that has generated data on welding flaws, which indicated that the largest flaws occur in weld repairs. Recent research results confirm that repair flaws are complex in composition and may include cracks on the repair ends. Section III of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code for nuclear power plant components requires radiographic examinations (RT) of welds and requires repairs for RT indications that exceed code acceptable sizes. PNNL has previously obtained the complete construction records for two RPVs. Analysis of these records show a significant change in repair frequency.

  12. Chemical Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ARPA-E Basic Energy Sciences Materials Sciences and Engineering Chemical Sciences ... SunShot Grand Challenge: Regional Test Centers Chemical Engineering HomeTag:Chemical ...

  13. Reliability Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    LA-UR 15-27450 This document is approved for public release; further dissemination unlimited Reliability Engineering Reliability Engineering Current practice in reliability is ...

  14. Haier Repair Confusion Resolved | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Haier Repair Confusion Resolved Haier Repair Confusion Resolved April 26, 2010 - 12:28pm Addthis On January 7, 2010, DOE entered into a Consent Decree with Haier America regarding a problem with four models of Haier freezers that resulted in those freezers not achieving their advertised energy efficiency. DOE recently became aware that some consumers eligible for repairs were incorrectly told that they were not eligible. Haier has resolved the problem, and consumers are encouraged to contact

  15. Distribution System Audits, Leak Detection, and Repair: Kirtland Air Force Base Leak Detection and Repair Program

    SciTech Connect

    2009-01-14

    Water Best Management Practice #3 Fact Seet: Outlines how a leak detection and repair program helped Kirtland Air Force Base perform distribution system audits, leak detection, and repair to conserve water site-wide.

  16. Engineering Institute

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Education Opportunities » Engineering Institute Engineering Institute Engineering dynamics that include flight, vibration isolation for precision manufacturing, earthquake engineering, blast loading, signal processing, and experimental model analysis. Contact Leader, Los Alamos Charles Farrar Email Leader, UCSD Michael Todd Email Los Alamos Program Administrator Jutta Kayser (505) 663-5649 Email Administrative Assistant Stacy Baker (505) 663-5233 Email Collaboration for conducting

  17. Stirling engines

    SciTech Connect

    Reader, G.T.; Hooper

    1983-01-01

    The Stirling engine was invented by a Scottish clergyman in 1816, but fell into disuse with the coming of the diesel engine. Advances in materials science and the energy crisis have made a hot air engine economically attractive. Explanations are full and understandable. Includes coverage of the underlying thermodynamics and an interesting historical section. Topics include: Introduction to Stirling engine technology, Theoretical concepts--practical realities, Analysis, simulation and design, Practical aspects, Some alternative energy sources, Present research and development, Stirling engine literature.

  18. INTERNAL REPAIR OF PIPELINES REVIEW & EVALUATION OF INTERNAL PIPELINE REPAIR TRIALS REPORT

    SciTech Connect

    Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

    2004-09-01

    The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners, indicating that this type of liner is generally ineffective at restoring the pressure containing capabilities of pipelines. Failure pressure for pipe repaired with carbon fiber-reinforced composite liner was greater than that of the un-repaired pipe section with damage, indicating that this type of liner is effective at restoring the pressure containing capability of pipe. Pipe repaired with weld deposition failed at pressures lower than that of un-repaired pipe in both the virgin and damaged conditions, indicating that this repair technology is less effective at restoring the pressure containing capability of pipe than a carbon fiber-reinforced liner repair. Physical testing indicates that carbon fiber-reinforced liner repair is the most promising technology evaluated to-date. Development of a comprehensive test plan for this process is recommended for use in the next phase of this project.

  19. Solar Water Heating System Maintenance and Repair | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Water Heating System Maintenance and Repair Solar Water Heating System Maintenance and Repair Rooftop solar water heaters need regular maintenance to operate at peak efficiency. |...

  20. Leveraging Service Calls and Emergency Repairs for Energy Efficiency...

    Energy Saver

    Service Calls and Emergency Repairs for Energy Efficiency Marketing Leveraging Service Calls and Emergency Repairs for Energy Efficiency Marketing Better Buildings Residential ...

  1. Solar Water Heating System Maintenance and Repair | Department...

    Energy Saver

    Water Heating System Maintenance and Repair Solar Water Heating System Maintenance and Repair Rooftop solar water heaters need regular maintenance to operate at peak efficiency. | ...

  2. Value Engineering

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2002-12-30

    To establish Department of Energy (DOE) value engineering policy that establishs and maintains cost-effective value procedures and processes.

  3. Further Evolution of Composite Doubler Aircraft Repairs Through a Focus on Niche Applications

    SciTech Connect

    ROACH,DENNIS P.

    2000-07-15

    with high-use fuselage skin applications. The general DC-10 repair areas which provide a high payoff to FedEx and which minimize design and installation complexities have been identified as follows: (1) gouges, dents, lightning strike, and impact skin damage, and (2) corrosion grind outs in surface skin. This paper presents the engineering activities that have been completed in order to make this technology available for widespread commercial aircraft use.

  4. Developments advance subsea pipelaying, inspection, repair

    SciTech Connect

    1997-09-15

    Recent advances in laying, inspecting, and repairing pipelines are helping to cut both costs and time. A new dredging system that employs jets to clear a subsea trench for pipelay received trials off Belgium last spring. Also, within the last year, projects in the Middle East and North Sea employed technologies that promise to make inspecting the surface of a subsea pipeline in difficult terrain easier, less time consuming, and therefore less costly. Plus, subsea repair of damaged pipelines may take less time with a new ``stabbable`` pipe connector. The paper describes jet dredging, inspection advance, support software, the North Sea site, and pipeline repair.

  5. A Guide to AC Motor Repair and Replacement

    SciTech Connect

    2004-03-01

    This booklet provides helpful information for making informed repair or replace decisions for electric motors.

  6. Electronic Fabrication & Repair | The Ames Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Electronic Fabrication & Repair The Electronics group provides custom design and fabrication of electronic equipment.. We convert ideas into custom-finished equipment in our shop using ORCAD Schematic Capture and PCB Layout software in conjunction with our PCB machine to make prototype circuit boards in-house. Our technicians also aid in automating and controlling research project instrumentation using Texas Instruments LabView. We repair all kinds of scientific and laboratory electronic and

  7. Model Repair Specifications for Low Voltage Induction Motors | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Model Repair Specifications for Low Voltage Induction Motors Model Repair Specifications for Low Voltage Induction Motors These Model Repair Specifications are intended to cover routine repair and rewind of low-voltage random-wound three-phase AC squirrel cage induction motors. Model Repair Specifications for Low Voltage Induction Motors (November 1999) (1.31 MB) More Documents & Publications DOE Navigant Master Presentation Improving Motor and Drive System Performance - A

  8. Model Repair Specifications for Low Voltage Induction Motors

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Model Repair Specifications For Low Voltage Induction Motors Model Repair Specifications for Low Voltage Induction Motors These Model Repair Specifications are intended to cover routine repair and rewind of low-voltage random-wound three-phase AC squirrel cage induction motors. For motors falling outside this description, the more comprehensive model specifications below are recommended. Electric Motor Model Repair Specifications DOE/BP-2748 Available from the U.S. Department of Energy's Office

  9. Shockwave Engine: Wave Disk Engine

    SciTech Connect

    2010-01-14

    Broad Funding Opportunity Announcement Project: MSU is developing a new engine for use in hybrid automobiles that could significantly reduce fuel waste and improve engine efficiency. In a traditional internal combustion engine, air and fuel are ignited, creating high-temperature and high-pressure gases which expand rapidly. This expansion of gases forces the engine’s pistons to pump and powers the car. MSU’s engine has no pistons. It uses the combustion of air and fuel to build up pressure within the engine, generating a shockwave that blasts hot gas exhaust into the blades of the engine’s rotors causing them to turn, which generates electricity. MSU’s redesigned engine would be the size of a cooking pot and contain fewer moving parts—reducing the weight of the engine by 30%. It would also enable a vehicle that could use 60% of its fuel for propulsion.

  10. Energy and Technology Review: Unlocking the mysteries of DNA repair

    SciTech Connect

    Quirk, W.A.

    1993-04-01

    DNA, the genetic blueprint, has the remarkable property of encoding its own repair following diverse types of structural damage induced by external agents or normal metabolism. We are studying the interplay of DNA damaging agents, repair genes, and their protein products to decipher the complex biochemical pathways that mediate such repair. Our research focuses on repair processes that correct DNA damage produced by chemical mutagens and radiation, both ionizing and ultraviolet. The most important type of DNA repair in human cells is called excision repair. This multistep process removes damaged or inappropriate pieces of DNA -- often as a string of 29 nucleotides containing the damage -- and replaces them with intact ones. We have isolated, cloned, and mapped several human repair genes associated with the nucleotide excision repair pathway and involved in the repair of DNA damage after exposure to ultraviolet light or mutagens in cooked food. We have shown that a defect in one of these repair genes, ERCC2, is responsible for the repair deficiency in one of the groups of patients with the recessive genetic disorder xeroderma pigmentosum (XP group D). We are exploring ways to purify sufficient quantities (milligrams) of the protein products of these and other repair genes so that we can understand their functions. Our long-term goals are to link defective repair proteins to human DNA repair disorders that predispose to cancer, and to produce DNA-repair-deficient mice that can serve as models for the human disorders.

  11. General Engineers

    Energy Information Administration (EIA) (indexed site)

    General Engineers 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 General Engineer, whose work is associated with analytical studies and evaluation projects pertaining to the operations of the energy industry. Responsibilities: General Engineers perform or participate in one or

  12. Engineering Institute

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Institute Engineering Institute Multidisciplinary engineering research that integrates advanced modeling and simulations, novel sensing systems and new developments in information technology. May 14, 2013 Los Alamos Research Park Los Alamos Research Park, the home of Engineering Institute Contact Institute Director Charles Farrar (505) 665-0860 Email UCSD EI Director Michael Todd (858) 534-5951 Executive Administrator Ellie Vigil (505) 667-2818 Email Administrative Assistant Rebecca Duran (505)

  13. Engineering Services

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Services Engineering Services The Network OSCARS Fasterdata IPv6 Network Network Performance Tools The ESnet Engineering Team Contact Us Technical Assistance: 1 800-33-ESnet (Inside US) 1 800-333-7638 (Inside US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Engineering Services ESnet provides interoperable, effective, reliable, and high performance network communications infrastructure, and certain

  14. Information engineering

    SciTech Connect

    Hunt, D.N.

    1997-02-01

    The Information Engineering thrust area develops information technology to support the programmatic needs of Lawrence Livermore National Laboratory`s Engineering Directorate. Progress in five programmatic areas are described in separate reports contained herein. These are entitled Three-dimensional Object Creation, Manipulation, and Transport, Zephyr:A Secure Internet-Based Process to Streamline Engineering Procurements, Subcarrier Multiplexing: Optical Network Demonstrations, Parallel Optical Interconnect Technology Demonstration, and Intelligent Automation Architecture.

  15. Electrical Engineer

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Power System Operation Operations Engineering, (J4200) 5555...

  16. Environmental Engineer

    Energy.gov [DOE]

    A successful candidate in this position will be an environmental technical expert and advisor to integrate science and engineering principles to improve the natural environment and direct and...

  17. structured engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    engineering - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy ...

  18. Systems Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering ...

  19. Rotary engine

    SciTech Connect

    Leas, A. M.; Leas, L. E.

    1985-02-12

    Disclosed are an engine system suitable for use with methyl alcohol and hydrogen and a rotary engine particularly suited for use in the engine system. The rotary engine comprises a stator housing having a plurality of radially directed chamber dividers, a principal rotor, a plurality of subordinate rotors each having an involute gear in its periphery mounted on the principal rotor, and means for rotating the subordinate rotors so that their involute gears accept the radially directed dividers as the subordinate rotors move past them.

  20. Electronics Engineer

    Energy.gov [DOE]

    This position is located in the Communications Test and Energization (TETD) organization of Commissioning and Testing (TET), Engineering and Technical Services (TE), Transmission Services (T),...

  1. Mechanical Engineer

    Energy.gov [DOE]

    This position is located in the Engineering Services (PEJD) organization of Program Implementation Energy Efficiency, Power Services, Bonneville Power Administration (BPA). As part of the Power...

  2. Alkylation damage repair in mammalian genomes

    SciTech Connect

    Mitra, S.; Roy, R.; Kim, N.K. |; Tano, K. |; Ibeanu, G.C. |; Dunn, W.C.; Natarajan, A.T.; Hartenstein, B.; Kaina, B.

    1992-11-01

    The repair of O{sup 6} -alkylguanine in DNA involves only O{sup 6} -methyltransferase (MGMT) while the repair of N-alkylpurines requires multiple proteins including N-methylpurine-DNA glycosylase (MPG). While the biochemical properties human and mouse MGMTs are very similar, the mouse MPG removes 7-methylguanine more efficiently than the human protein. An increased level of MGMT, without a change in the level of MPG associated with gene amplification, was observed in a mouse cell line resistant to 2-chloroethyl-N-nitrosourea. In contrast, no correlation was observed between MPG level and resistance to methyl methanesulfonate in Chinese hamster ovary (CHO) cells. This result suggests a protein other than MPG limits the repair rate of N-alkylpurine in CHO cells.

  3. Alkylation damage repair in mammalian genomes

    SciTech Connect

    Mitra, S.; Roy, R.; Kim, N.K. . Sealy Center for Molecular Science Oak Ridge National Lab., TN ); Tano, K. Oak Ridge National Lab., TN ); Ibeanu, G.C. Oak Ridge National Lab., TN ); Dunn, W.C. (

    1992-01-01

    The repair of O{sup 6} -alkylguanine in DNA involves only O{sup 6} -methyltransferase (MGMT) while the repair of N-alkylpurines requires multiple proteins including N-methylpurine-DNA glycosylase (MPG). While the biochemical properties human and mouse MGMTs are very similar, the mouse MPG removes 7-methylguanine more efficiently than the human protein. An increased level of MGMT, without a change in the level of MPG associated with gene amplification, was observed in a mouse cell line resistant to 2-chloroethyl-N-nitrosourea. In contrast, no correlation was observed between MPG level and resistance to methyl methanesulfonate in Chinese hamster ovary (CHO) cells. This result suggests a protein other than MPG limits the repair rate of N-alkylpurine in CHO cells.

  4. Repairable chip bonding/interconnect process

    DOEpatents

    Bernhardt, A.F.; Contolini, R.J.; Malba, V.; Riddle, R.A.

    1997-08-05

    A repairable, chip-to-board interconnect process which addresses cost and testability issues in the multi-chip modules is disclosed. This process can be carried out using a chip-on-sacrificial-substrate technique, involving laser processing. This process avoids the curing/solvent evolution problems encountered in prior approaches, as well is resolving prior plating problems and the requirements for fillets. For repairable high speed chip-to-board connection, transmission lines can be formed on the sides of the chip from chip bond pads, ending in a gull wing at the bottom of the chip for subsequent solder. 10 figs.

  5. Repairable chip bonding/interconnect process

    DOEpatents

    Bernhardt, Anthony F.; Contolini, Robert J.; Malba, Vincent; Riddle, Robert A.

    1997-01-01

    A repairable, chip-to-board interconnect process which addresses cost and testability issues in the multi-chip modules. This process can be carried out using a chip-on-sacrificial-substrate technique, involving laser processing. This process avoids the curing/solvent evolution problems encountered in prior approaches, as well is resolving prior plating problems and the requirements for fillets. For repairable high speed chip-to-board connection, transmission lines can be formed on the sides of the chip from chip bond pads, ending in a gull wing at the bottom of the chip for subsequent solder.

  6. Thermoacoustic engines

    SciTech Connect

    Swift, G.W.

    1988-10-01

    Thermoacoustic engines, or acoustic heat engines, are energy-conversion devices that achieve simplicity and concomitant reliability by use of acoustic technology. Their efficiency can be a substantial fraction of Carnot's efficiency. In thermoacoustic prime movers, heat flow from a high-temperature source to a low-temperature sink generates acoustic power (which may be converted to electric power using a transducer). In thermoacoustic heat pumps and refrigerators, acoustic power is used to pump heat from a low-temperature source to a high-temperature sink. This review teaches the fundamentals of thermoacoustic engines, by analysis, intuition, and example.

  7. Combustion Engine

    Energy.gov [DOE]

    Pictured here is an animation showing the basic mechanics of how an internal combustion engine works. With support from the Energy Department, General Motors researchers developed a new technology ...

  8. Civil Engineer

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Desert Southwest Region Engineering and Construction (G5600) 615 S. 43rd Avenue...

  9. Engineering Technician

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Desert Southwest Region Engineering and Construction (G5600) 615 S. 43rd Avenue...

  10. Harmonic engine

    DOEpatents

    Bennett, Charles L.

    2009-10-20

    A high efficiency harmonic engine based on a resonantly reciprocating piston expander that extracts work from heat and pressurizes working fluid in a reciprocating piston compressor. The engine preferably includes harmonic oscillator valves capable of oscillating at a resonant frequency for controlling the flow of working fluid into and out of the expander, and also preferably includes a shunt line connecting an expansion chamber of the expander to a buffer chamber of the expander for minimizing pressure variations in the fluidic circuit of the engine. The engine is especially designed to operate with very high temperature input to the expander and very low temperature input to the compressor, to produce very high thermal conversion efficiency.

  11. General Engineer

    Energy.gov [DOE]

    This position is located in Office of Standard Contract Management, within the Office of the General Counsel (GC). The purpose of the position is to conduct technical and engineering reviews of the...

  12. Solar Water Heating System Maintenance and Repair | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Water Heating System Maintenance and Repair Solar Water Heating System Maintenance and Repair May 30, 2012 - 2:35pm Addthis Rooftop solar water heaters need regular maintenance to...

  13. Protein Bridges DNA Base and Nucleotide Excision Repair Pathways

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... It turns out that ATL bridges two DNA repair pathways (base repair and nucleotide excision ... By mapping conservation of amino acid sequences between their ATL and sequences in other ...

  14. Selected Bibliography on Electric Motor Repair | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Selected Bibliography on Electric Motor Repair Selected Bibliography on Electric Motor Repair The following series of repair documents related to electric motors were produced by the U.S. Department of Energy's Advanced Manufacturing Office (formerly the Office of Industrial Technologies) with input from trade associations, consulting companies, manufacturers, non-profit operations, and others. Selected Bibliography on Electric Motor Repair (November 1999) (1.38 MB) More Documents &

  15. Antibody specific for a DNA repair protein

    DOEpatents

    Petrini, John H.; Morgan, William Francis; Maser, Richard Scott; Carney, James Patrick

    2006-07-11

    An isolated and purified DNA molecule encoding a DNA repair protein, p95, is provided, as is isolated and purified p95. Also provided are methods of detecting p95 and DNA encoding p95. The invention further provides p95 knock-out mice.

  16. DNA encoding a DNA repair protein

    DOEpatents

    Petrini, John H.; Morgan, William Francis; Maser, Richard Scott; Carney, James Patrick

    2006-08-15

    An isolated and purified DNA molecule encoding a DNA repair protein, p95, is provided, as is isolated and purified p95. Also provided are methods of detecting p95 and DNA encoding p95. The invention further provides p95 knock-out mice.

  17. Emergency pipe line repair connects subsea pipe lines

    SciTech Connect

    Lerique, M.P.; Thiberge, P. ); Wright, N. )

    1990-11-01

    Emergency repair of any subsea line pipe must form a high-integrity, metal-to-metal seal. This paper presents a remote, diverless repair system that utilizes master flanges, a connector and a spool piece to repair line pipe in deep offshore waters.

  18. Rotary engine

    SciTech Connect

    Meyman, U.

    1987-02-03

    A rotary engine is described comprising: two covers spaced from one another; rotors located between the covers and rotating and planetating in different phases; the rotors interengaging to form working chambers therebetween; means to supply fluid to the working chambers and means to exhaust fluid from the working chambers during the operating cycle of the engine; gearing for synchronizing rotation and planetation of the rotors and each including first and second gears arranged so that one of the gears is connected with the rotors while the other of the gears is connected with an immovable part of the engine and the gears engage with one another; carriers interconnecting the rotors and planetating in the same phase with the planetation of the rotors for synchronizing the rotation and planetation of the rotors; shafts arranged to support the carriers during their planetations; and elements for connecting the covers with one another.

  19. Helium bubble distributions in reactor tank repair specimens. Part 1

    SciTech Connect

    Tosten, M.H.; Kestin, P.A.

    1992-03-01

    This report discusses the Reactor Tank Repair (RTR) program was initiated to develop an in-tank repair process capable of repairing stress corrosion cracks within the SRS reactor tank walls, in the event that such a repair is needed. Previous attempts to repair C-reactor tank with a gas tungsten arc (GTA) welding process were unsuccessful due to significant cracking that occurred in the heat-affected-zones adjacent to the repair welds. It was determined that this additional cracking was a result of helium embrittlement caused by the combined effects of helium (existing within the tank walls), the high heat input associated with the GTA process, and weld shrinkage stresses. Based on the results of earlier studies it was suggested that the effects of helium embrittlement could be minimized by using a low heat input GMA process. Metallographic analysis played an important role throughout the investigation of alternative welding methods for the repair of helium-containing materials.

  20. Helium bubble distributions in reactor tank repair specimens

    SciTech Connect

    Tosten, M.H.; Kestin, P.A.

    1992-03-01

    This report discusses the Reactor Tank Repair (RTR) program was initiated to develop an in-tank repair process capable of repairing stress corrosion cracks within the SRS reactor tank walls, in the event that such a repair is needed. Previous attempts to repair C-reactor tank with a gas tungsten arc (GTA) welding process were unsuccessful due to significant cracking that occurred in the heat-affected-zones adjacent to the repair welds. It was determined that this additional cracking was a result of helium embrittlement caused by the combined effects of helium (existing within the tank walls), the high heat input associated with the GTA process, and weld shrinkage stresses. Based on the results of earlier studies it was suggested that the effects of helium embrittlement could be minimized by using a low heat input GMA process. Metallographic analysis played an important role throughout the investigation of alternative welding methods for the repair of helium-containing materials.

  1. Value Engineering

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2004-01-07

    To establish Department of Energy (DOE) value engineering policy that meets the requirements of Public Law 104-106, Section 4306 as codified by 41 United States Code 432. Canceled by DOE N 251.94. Does not cancel other directives.

  2. Harmonic engine

    DOEpatents

    Bennett, Charles L.; Sewall, Noel; Boroa, Carl

    2014-08-19

    An engine based on a reciprocating piston engine that extracts work from pressurized working fluid. The engine includes a harmonic oscillator inlet valve capable of oscillating at a resonant frequency for controlling the flow of working fluid into of the engine. In particular, the inlet valve includes an inlet valve head and a spring arranged together as a harmonic oscillator so that the inlet valve head is moveable from an unbiased equilibrium position to a biased closed position occluding an inlet. Upon releasing the inlet valve the inlet valve head undergoes a single oscillation past the equilibrium positio to a maximum open position and returns to a biased return position close to the closed position to choke the flow and produce a pressure drop across the inlet valve causing the inlet valve to close. Protrusions carried either by the inlet valve head or piston head are used to bump open the inlet valve from the closed position and initiate the single oscillation of the inlet valve head, and protrusions carried either by the outlet valve head or piston head are used to close the outlet valve ahead of the bump opening of the inlet valve.

  3. Relocation and repair of the National Geotechnical Centrifuge. Final report

    SciTech Connect

    Cheney, J.A.

    1994-10-01

    In January of 1984, the large geotechnical centrifuge located at NASA Ames Research Center, was in the first stages of operational checkout when the main thrust bearing of the large D.C. drive motor failed. After many months of investigation and proposals for repair of the facility, it became evident that it would be far more advantageous to the engineering community to remove those components of the centrifuge that were undamaged to the Davis campus and replace the drive system completely. The large centrifuge had cost over 2 million dollars to build, and it would have been irresponsible to simply scrap it. Recognizing this fact, funds were solicited and received from various sources, and Beam Engineering Inc. was contracted to design and construct the centrifuge at its new location. The University of California contributed a quarter of a million dollars and Tyndall Air Force Base, through Los Alamos National Laboratory, contributed $140,000. There were funds also contributed by LANL, LLNL, US Navy and NSF. The first stage in the phased development of the newly located centrifuge is nearing completion, which prompts the writing of this report. By the time that this report reaches the reader the first runs of the centrifuge will have been completed. The present report describes the present capability of the centrifuge and the plans for upgrading as time goes on. Several pilot studies were carried out. The experiments involved (1) the effects of nearby explosions on buried thin walled containers and (2) the advection and dispersion of toxic waste water through soils.

  4. Advanced Reciprocating Engine Systems

    Energy.gov [DOE]

    The Advanced Reciprocating Engine Systems (ARES) program is designed to promote separate but parallel engine development between the major stationary, gaseous fueled engine manufacturers in the...

  5. Rotary engine

    SciTech Connect

    Fawcett, S.L.

    1987-03-03

    In an internal combustion engine, external heat engine, heat pump, gaseous expander, pump or gas compressor, the combustion is described including means forming a cylindrical working chamber having intake and exhaust port means for gases, and two pistons having an arcuate length within the range of 90/sup 0/ to 120/sup 0/ of the cylindrical portion of the working chamber to move toward and away from each other for compression and expansion of gases by rotation on separate concentrically-arranged shafts. A seal means is carried by the walls of the cylindrical working chamber at each of spaced apart locations to continuously form a gas sealing relation with both of the pistons while the pistons rotate toward and away from each other in the cylindrical working chamber.

  6. Rotary engine

    SciTech Connect

    Larson, T. G.

    1985-10-22

    The rotary engine has a circumferential main chamber and at least one smaller combustion chamber spaced from the main chamber. The rotor includes a plurality of radially-projecting sealing members in spaced relationship thereabout for maintaining a fluid-sealed condition along a single fixed transverse strip area on the interior surface of the main chamber. A single radially-oriented axially-parallel piston vane is also carried by the rotor and moves through the fixed strip area of the main chamber at each revolution of the rotor. Plural passages for intake, compression, expansion, and exhaust are ported into the main chamber at locations proximate to the fixed strip area. Valve means in the passages selectively open and close the same for a cycle of engine operation involving intake, compression, burning, and exhaust.

  7. Project Engineer (Nuclear/Mechanical Engineer) | Princeton Plasma...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Project Engineer (NuclearMechanical Engineer) Department: Engineering Supervisor(s): ... Its Mechanical Engineering Division (MED) is seeking to hire a NuclearMechanical Engineer ...

  8. HCCI in a Variable Compression Ratio Engine: Effects of Engine...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    in a Variable Compression Ratio Engine: Effects of Engine Variables HCCI in a Variable Compression Ratio Engine: Effects of Engine Variables 2004 Diesel Engine Emissions Reduction ...

  9. Rotary engine

    SciTech Connect

    Fawcett, S.L.

    1988-02-09

    In an internal combustion engine, external heat engine, heat pump, gaseous expander, pump or gas compressor, the combination is described including means forming a cylindrical working chamber communicating with intake and exhaust port means for gases, two pistons having an arcuate length within the range of 90/sup 0/ to 120/sup 0/ of the cylindrical surface of the working chamber. The pistons are movable toward and away from each other for compression and expansion of gases in the working chamber while separately rotating concentrically-arranged shafts, a drive shaft, three sets of gearing for connecting the pistons to the drive shaft, a first set of the gearing drivingly coupled to a first of the separate concentric shafts, a second set of the gearing drivingly coupled to a second of the concentric shaft, and a third set of the gearing comprising non-circular gears. The drive shaft is secured to one gear of each of the first, second and third gear sets of gearing for rotating the drive shaft with a substantially constant velocity and torque output throughout the several phases of the working cycle of the engine, compressor or pump.

  10. LENS repair and modification of metal NW components:materials and applications guide.

    SciTech Connect

    Smugeresky, John E. (Sandia National Laboratories, Livermore, CA); Gill, David Dennis; Oberhaus, Jason (BWXT Y-12); Adams, Thad; VanCamp, Chad

    2006-11-01

    Laser Engineered Net Shaping{trademark} (LENS{reg_sign}) is a unique, layer additive, metal manufacturing technique that offers the ability to create fully dense metal features and components directly from a computer solid model. LENS offers opportunities to repair and modify components by adding features to existing geometry, refilling holes, repairing weld lips, and many other potential applications. The material deposited has good mechanical properties with strengths typically slightly higher that wrought material due to grain refinement from a quickly cooling weld pool. The result is a material with properties similar to cold worked material, but without the loss in ductility traditionally seen with such treatments. Furthermore, 304L LENS material exhibits good corrosion resistance and hydrogen compatibility. This report gives a background of the LENS process including materials analysis addressing the requirements of a number of different applications. Suggestions are given to aid both the product engineer and the process engineer in the successful utilization of LENS for their applications. The results of testing on interface strength, machinability, weldability, corrosion resistance, geometric effects, heat treatment, and repair strategy testing are all included. Finally, the qualification of the LENS process is briefly discussed to give the user confidence in selecting LENS as the process of choice for high rigor applications. The testing showed LENS components to have capability in repair/modification applications requiring complex castings (W80-3 D-Bottle bracket), thin wall parts requiring metal to be rebuilt onto the part (W87 Firing Set Housing and Y-12 Test Rings), the filling of counterbores for use in reservoir reclamation welding (SRNL hydrogen compatibility study) and the repair of surface defects on pressure vessels (SRNL gas bottle repair). The material is machinable, as testing has shown that LENS deposited material machines similar to that of

  11. Restore: Modeling Repair and Restoration Processes | Argonne National

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Laboratory Restore: Modeling Repair and Restoration Processes Restore: Modeling Repair and Restoration Processes Argonne's Restore software models complex sets of steps required to accomplish a goal, such as repairing a ruptured natural gas pipeline, when the time required to complete a step may be uncertain. For example, external conditions (i.e., the time of day, weather, and availability of crew) may affect one or more of the steps required to accomplish a goal. Therefore,

  12. Federal Facilities Maintenance, Repair Report Calls for Action

    SciTech Connect

    Bartlett, Rosemarie

    2012-10-01

    This article is an overview of a recent report by the Federal Facilities Council on "Predicting Outcomes from Investments in Maintenance and Repair of Federal Facilities."

  13. Leveraging Service Calls and Emergency Repairs for Energy Efficiency Marketing

    Office of Energy Efficiency and Renewable Energy (EERE)

    Better Buildings Residential Network Peer Exchange Call Series: Leveraging Service Calls and Emergency Repairs, Call Slides and Discussion Summary, November 13, 2014.

  14. Advanced maintenance, inspection & repair technology for nuclear power plants

    SciTech Connect

    Hinton, B.M.

    1994-12-31

    Maintenance, inspection, and repair technology for nuclear power plants is outlined. The following topics are discussed: technology for reactor systems, reactor refueling bridge, fuel inspection system, fuel shuffling software, fuel reconstitution, CEA/RCCA/CRA inspection, vessel inspection capabilities, CRDM inspection and repair, reactor internals inspection and repair, stud tensioning system, stud/nut cleaning system, EDM machining technology, MI Cable systems, core exit T/C nozzle assemblies, technology for steam generators, genesis manipulator systems, ECT, UT penetrant inspections, steam generator repair and cleaning systems, technology for balance of plant, heat exchangers, piping and weld inspections, and turbogenerators.

  15. Window Replacement, Rehabilitation, & Repair Guides- Building America Top Innovation

    Energy.gov [DOE]

    Building America team Building Science Corporation guides contractors through several options for repairing or replacing old windows to improve air sealing and thermal performance.

  16. Occupational Radiation Exposure During Endovascular Aortic Repair

    SciTech Connect

    Sailer, Anna M.; Schurink, Geert Willem H.; Bol, Martine E. Haan, Michiel W. de Zwam, Willem H. van Wildberger, Joachim E. Jeukens, Cécile R. L. P. N.

    2015-08-15

    PurposeThe aim of the study was to evaluate the radiation exposure to operating room personnel and to assess determinants for high personal doses during endovascular aortic repair.Materials and MethodsOccupational radiation exposure was prospectively evaluated during 22 infra-renal aortic repair procedures (EVAR), 11 thoracic aortic repair procedures (TEVAR), and 11 fenestrated or branched aortic repair procedures (FEVAR). Real-time over-lead dosimeters attached to the left breast pocket measured personal doses for the first operators (FO) and second operators (SO), radiology technicians (RT), scrub nurses (SN), anesthesiologists (AN), and non-sterile nurses (NSN). Besides protective apron and thyroid collar, no additional radiation shielding was used. Procedural dose area product (DAP), iodinated contrast volume, fluoroscopy time, patient’s body weight, and C-arm angulation were documented.ResultsAverage procedural FO dose was significantly higher during FEVAR (0.34 ± 0.28 mSv) compared to EVAR (0.11 ± 0.21 mSv) and TEVAR (0.06 ± 0.05 mSv; p = 0.003). Average personnel doses were 0.17 ± 0.21 mSv (FO), 0.042 ± 0.045 mSv (SO), 0.019 ± 0.042 mSv (RT), 0.017 ± 0.031 mSv (SN), 0.006 ± 0.007 mSv (AN), and 0.004 ± 0.009 mSv (NSN). SO and AN doses were strongly correlated with FO dose (p = 0.003 and p < 0.001). There was a significant correlation between FO dose and procedural DAP (R = 0.69, p < 0.001), iodinated contrast volume (R = 0.67, p < 0.001) and left-anterior C-arm projections >60° (p = 0.02), and a weak correlation with fluoroscopy time (R = 0.40, p = 0.049).ConclusionAverage FO dose was a factor four higher than SO dose. Predictors for high personal doses are procedural DAP, iodinated contrast volume, and left-anterior C-arm projections greater than 60°.

  17. Stirling engine

    SciTech Connect

    Bolger, S.R.

    1992-03-17

    This patent describes an engine. It comprises at least two variable volume compartments joined by a porous medium regenerator; heat exchangers in heat exchange relationships with the variable volume compartments; a fixed quantity of gas in the compartments; a piston in each of the compartments; means to control the pistons to vary the volumes of the gas transferring between the compartments in the form of overlapping quadrilateral waveforms to compress the gas in both compartments through the same cycle pressure ratio during a cycle compression step, to shift the gas between compartments and to expand the gas in both compartments through the same cycle pressure ratio during a cycle expansion step.

  18. Waste minimization in an autobody repair shop

    SciTech Connect

    Baria, D.N.; Dorland, D.; Bergeron, J.T.

    1994-12-31

    This work was done to document the waste minimization incorporated in a new autobody repair facility in Hermantown, Minnesota. Humes Collision Center incorporated new waste reduction techniques when it expanded its old facilities in 1992 and it was able to achieve the benefits of cost reduction and waste reduction. Humes Collision Center repairs an average of 500 cars annually and is a very small quantity generator (VSQG) of hazardous waste, as defined by the Minnesota Pollution Control Agency (MPCA). The hazardous waste consists of antifreeze, batteries, paint sludge, refrigerants, and used oil, while the nonhazardous waste consists of cardboard, glass, paint filters, plastic, sanding dust, scrap metal, and wastewater. The hazardous and nonhazardous waste output were decreased by 72%. In addition, there was a 63% reduction in the operating costs. The waste minimization includes antifreeze recovery and recycling, reduction in unused waste paint, reduction, recovery and recycle of waste lacquer thinner for cleaning spray guns and paint cups, elimination of used plastic car bags, recovery and recycle of refrigerant, reduction in waste sandpaper and elimination of sanding dust, and elimination of waste paint filters. The rate of return on the investment in waste minimization equipment is estimated from 37% per year for the distillation unit, 80% for vacuum sanding, 146% for computerized paint mixing, 211% for the refrigerant recycler, to 588% per year for the gun washer. The corresponding payback time varies from 3 years to 2 months.

  19. Rotary engine

    SciTech Connect

    Brownfield, L.A.

    1980-12-02

    The major components of this rotary engine are two equal sized rotary units, the housing containing them along with associated ignition and cooling systems. Each of the rotary units consists of a shaft, gear, two outer compressor wheels, and one center power wheel which has twice the axial thickness as the compressor wheel. All the wheels are cylindrical in shape with a lobe section comprising a 180/sup 0/ arc on the periphery of each wheel which forms an expanding and contracting volumetric chamber by means of leading and trailing lips. The lobes of the first rotary unit are situated 180/sup 0/ opposite the lobes of the second adjacent mating rotary unit, thus lobes can intermesh with its corresponding wheel.

  20. Deep patch technique for landslide repair. Final report

    SciTech Connect

    Helwany, B.M.

    1994-10-01

    The report describes the laboratory testing of the `USFS deep patch` technique and a CTI modification of this technique for repairing landslides with geosynthetic reinforcement. The technique involves replacing sections of roadway lost due to landslides on top of a geosynthetically-reinforced embankment. The CTI modification involves replacing the reinforced slope with a geosynthetically-reinforced retaining wall with a truncated base. Both techniques rely on the cantilevering ability of the reinforced mass to limit the load on the foundation with a high slide potential. The tests with road base showed that (1) both the USFS and CTI repair reduced effectively the adverse effects of local landsliding on the highway pavement by preventing crack propagation; (2) the USFS repair increased the stability of the repaired slope, which was in progressive failure, by reducing the stresses exerted on it; and (3) the CTI repair produced substantially greater stresses on its foundation due to the truncated base of the reinforced mass.

  1. Metabolic Engineering X Conference

    SciTech Connect

    Flach, Evan

    2015-05-07

    The International Metabolic Engineering Society (IMES) and the Society for Biological Engineering (SBE), both technological communities of the American Institute of Chemical Engineers (AIChE), hosted the Metabolic Engineering X Conference (ME-X) on June 15-19, 2014 at the Westin Bayshore in Vancouver, British Columbia. It attracted 395 metabolic engineers from academia, industry and government from around the globe.

  2. Development of a locomotive engine condition monitoring system

    SciTech Connect

    Broughton, C.; Holloway, R.; Webster, G.

    1997-12-31

    Outlines test procedures and results of a study of the application of the instantaneous crankshaft angular velocity (ICAV) engine condition monitoring system applied to three freight locomotives. The study involved the assessment of a prototype repair-shop diagnostic tool, based on prior experimental programs and the ICAV technology. Engine testing was carried out at four-month intervals for three separate trials on the locomotives. Experimental data obtained included power output, fuel consumption, cylinder firing pressure waveforms, and the ICAV waveforms. The performance of the ICAV system was judged on its ability to accurately predict the change in indicated mean effective pressure of each cylinder from one test to the next.

  3. Sandia Energy - HCCI/SCCI Engine Fundamentals

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    HCCISCCI Engine Fundamentals Home Transportation Energy Predictive Simulation of Engines Engine Combustion Automotive HCCISCCI Engine Fundamentals HCCISCCI Engine...

  4. Sandia Energy - HCCI/SCCI Engine Fundamentals

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    HCCISCCI Engine Fundamentals Home Transportation Energy Predictive Simulation of Engines Engine Combustion Heavy Duty HCCISCCI Engine Fundamentals HCCISCCI Engine...

  5. Study of Engine Operating Parameter Effects on GDI Engine Particle...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Study of Engine Operating Parameter Effects on GDI Engine Particle-Number Emissions Study of Engine Operating Parameter Effects on GDI Engine Particle-Number Emissions Results show ...

  6. Increased Engine Efficiency via Advancements in Engine Combustion...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engine Efficiency via Advancements in Engine Combustion Systems Increased Engine Efficiency via Advancements in Engine Combustion Systems Presentation given at the 16th Directions...

  7. Rotary engine

    SciTech Connect

    Smith, T.A.

    1992-01-28

    This patent describes an improved rotary engine. It comprises an annular master cylinder composed of a cylindrical housing, a continuous hollow outer concentric shaft, an outward end housing and an inward end housing; means to form a dynamically balanced disc piston assembly extending from the the outward end housing to the the inward end housing thereby dividing the the annular master cylinder into at least three separate gas tight cylinders formed by rotating discs, each cylinder having at least two pistons independently rotatable therein; means to isolate the unexpanded gases from any exit path into the housing of the piston controlling means; and wherein one of the pistons in each cylinder is connected directly to the the continuous outer concentric shaft to form a first piston assembly, the other of the pistons in each cylinder is connected to the discs which are connected to the end of an inner concentric shaft to form a second piston assembly, means for controlling the piston action by a common eccentric shaft such that as the pistons rotate they expand and reduce the distance between them thereby changing the volume between the pistons within each of the cylinders.

  8. Keep the engines running with computer-controlled surveillance

    SciTech Connect

    1995-09-01

    By the end of the 1980s, MAN B&W had introduced engine diagnosis systems for the company`s four-stroke and two-stroke engines. These two systems, Modis and Capa, form the basis for the company`s CoCoS (computer controlled surveillance) project, which started in 1991. The CoCoS system, as it is now available, consists of four modules: the engine diagnosis system, the maintenance planning system the spare parts catalog and the spare parts ordering and stock handling system. The modules can be applied as an integrated system, communicating with each other, but they can also be used as separate systems. Furthermore they can be installed in existing engine plants. The four modules of the CoCoS system are designed to provide the tools to monitor the condition of the ship machinery, indicate irregularities, identify the fading component and suggest required repair measures. 5 figs.

  9. Taking an engine`s temperature

    SciTech Connect

    Allison, S.W.; Beshears, D.L.; Cates, M.R.; Noel, B.W.; Turley, W.D.

    1997-01-01

    Ceramic and ceramic-coated components will be of increasing importance in the advanced engines now under development. Ceramics enable engines to run at much higher temperatures than the superalloys in more conventional engines can. The two options for noncontact high-temperature measurements of ceramic components are pyrometry and phosphor thermometry. This article describes how when properly applied as a thin coating, thermally sensitive phosphors can monitor the temperature of ceramic surfaces inside an engine.

  10. Fatigue response of repaired thick aluminum panels with bondline flaws

    SciTech Connect

    Conley, D.S.

    1999-03-01

    This research investigated the fatigue response of precracked 558 x 177.8 x 6.35 mm (22.0 x 7.0 x 0.25 in) 2024-T351 aluminum panels repaired with single-sided partially bonded, unidirectional, eighteen ply boron/epoxy reinforcements. Disbonds were introduced into the bondline of each repair during the adhesion process using teflon inserts. Five different disbond configurations, with varying disbond locations and sizes, were tested. Each repaired panel was subjected to constant amplitude cyclic fatigue loading with a maximum stress of 120MPa. Results from the different configurations were compared against one another and against repaired panels with no debonds to assess the effect of disbonds on repair life. Results from the experimentation showed that even in the case of very large disbonds (20% of total bond area), the bonded repairs significantly extended the lives of the cracked panels. Disbond configurations with disbonds located away from the crack in the aluminum panel, performed comparably to the repaired panel with no disbonds. Disbond configurations with disbonds covering the crack in the aluminum panel yielded slightly lower lives than those obtained from repaired panels with no disbonds. Cyclic fatigue loading caused no increase in size of the artificially induced disbonds. Cyclic disbond growth was observed in the immediate vicinity of the crack. Finite element analysis using the Three Layer Technique was performed to assess the ability of current modeling techniques in predicting the life of cracked thick aluminum panels repaired with composite patches. Results from the finite element analysis were shown to very closely match experimental data.

  11. Engine lubricating system

    SciTech Connect

    Kurio, N.; Yoshimi, H.

    1988-08-23

    This patent describes an engine lubricating system in which a measured amount of lubricating oil is supplied to the combustion chamber of an engine by a metering oil pump so that a larger amount of lubricating oil is supplied to the combustion chamber when the engine load is heavy than when the engine load is light, characterized by having a lubricating oil supply rate correction means which non-linearly increases the amount of the lubricating oil supplied to the combustion chamber with respect to engine r.p.m. so that the amount of oil supplied per unit engine revolution is greater at high engine speed than at low engine speed.

  12. Chemical & Engineering News

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ARPA-E Basic Energy Sciences Materials Sciences and Engineering Chemical Sciences ... SunShot Grand Challenge: Regional Test Centers Chemical & Engineering News Home...

  13. Bearing repair services offer a cost-effective alternative to expensive replacement

    SciTech Connect

    2009-02-15

    The article, based on a presentation during MINExpo 2008, explains how advancement is bearing design, material, maintenance and repair methods have greatly improved the potential for and popularity of bearing repair as an effective way to extend bearing life. The Trinken Co. offers a variety of service options including repair, recertification, reconditioning and remanufacturing. Benefits of a quality repair program are outlined. 2 photos.

  14. Intermediate hearth repair technique at Thyssen Stahl AG

    SciTech Connect

    Kowalski, W.; Bachhofen, H.J.; Ruether, P.; Ballewski, T.

    1996-12-31

    Nowadays various techniques for the fastest possible intermediate repair and/or emplacement of refractory materials above the tuyere level allow a significant extension of furnace campaign life. The latter are hence now exclusively determined by the service life of the hearth. The improvement of hearth monitoring and the estimation of residual brick strength of the refractory lining on the basis of temperature measurements in the hearth enable the location of individual zones of premature wear. These measurement methods, which were developed by Thyssen Stahl AG, aid the decision to undertake selective repair of the hearth. Three areas of repair are differentiated: taphole zone; hearth wall, localized; and hearth wall, extensive. This hearth repair method is described in this report using the example of hearth refurbishing blast furnace 8, Hamborn.

  15. To: Mansueti, Lawrence Subject: RE: Pepco Scheduled Line Repair...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    January 29, 2007 6:28 PM To: Mansueti, Lawrence Subject: RE: Pepco Scheduled Line Repair Dec. 1-20, 2006 Larry, Regarding the planned line outage, scheduled for Feb. 20 through Mar...

  16. Battery, heal thyself: Inventing self-repairing batteries | Argonne...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Battery, heal thyself: Inventing self-repairing batteries By Louise Lerner * January 11, 2012 Tweet EmailPrint Imagine dropping your phone on the hard concrete sidewalk-but when...

  17. Repairing Windows & Doors: How To's for the Handy Homeowner

    SciTech Connect

    2006-01-05

    This brochure contains tips for homeowners to repair windows and doors in their home that sustained hurricane damage. This publication is a part of the How To's for the Handy Homeowner Series.

  18. Repairing Walls & Floors: How To's for the Handy Homeowner

    SciTech Connect

    2006-01-09

    This brochure provides handy homeowners with tips on how to properly repair walls and floors in their homes that sustained damage during a hurricane. This publications is a part of the How To's for the Handy Homeowner Series.

  19. Mechanism of DNA interstrand cross-link processing by repair...

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Search Results Journal Article: Mechanism of DNA interstrand cross-link processing by repair nuclease FAN1 Citation Details In-Document Search Title: Mechanism of ...

  20. Repairing Roofs and Ceilings: How To's for the Handy Homeowner

    SciTech Connect

    2006-01-01

    This brochure provides handy homeowners with tips on how to properly repair roofs and ceilings in their homes that sustained damage during a hurricane. This publications is a part of the How To's for the Handy Homeowner Series.

  1. Inspect and Repair Steam Traps - Steam Tip Sheet #1

    SciTech Connect

    2012-01-31

    This revised AMO tip sheet on inspecting and repairing steam traps provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  2. Jefferson Lab Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineering Privacy and Security Notice Skip over navigation search JLab Engineering Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Engineering Division Engineering Pressure Systems Seminars/Training print version Mechanical Systems Mechanical Engineering - Document Control Survey Alignment Machine Shop Installation/Vacuum Cryogenics Cryogenics - Cryogenics Department

  3. Exposure Evaluation for Benzene, Lead and Noise in Vehicle and Equipment Repair Shops

    SciTech Connect

    Sweeney, Lynn C.

    2013-04-01

    An exposure assessment was performed at the equipment and vehicle maintenance repair shops operating at the U. S. Department of Energy Hanford site, in Richland, Washington. The maintenance shops repair and maintain vehicles and equipment used in support of the Hanford cleanup mission. There are three general mechanic shops and one auto body repair shop. The mechanics work on heavy equipment used in construction, cranes, commercial motor vehicles, passenger-type vehicles in addition to air compressors, generators, and farm equipment. Services include part fabrication, installation of equipment, repair and maintenance work in the engine compartment, and tire and brake services. Work performed at the auto body shop includes painting and surface preparation which involves applying body filler and sanding. 8-hour time-weighted-average samples were collected for benzene and noise exposure and task-based samples were collected for lead dust work activities involving painted metal surfaces. Benzene samples were obtained using 3M™ 3520 sampling badges and were analyzed for additional volatile organic compounds. These compounds were selected based on material safety data sheet information for the aerosol products used by the mechanics for each day of sampling. The compounds included acetone, ethyl ether, toluene, xylene, VM&P naphtha, methyl ethyl ketone, and trichloroethylene. Laboratory data for benzene, VM&P naphtha, methyl ethyl ketone and trichloroethylene were all below the reporting detection limit. Airborne concentrations for acetone, ethyl ether, toluene and xylene were all less than 10% of their occupational exposure limit. The task-based samples obtained for lead dusts were submitted for a metal scan analysis to identify other metals that might be present. Laboratory results for lead dusts were all below the reporting detection limit and airborne concentration for the other metals observed in the samples were less than 10% of the occupational exposure limit

  4. The Phillips Stirling engine

    SciTech Connect

    Hargreaves, C.M.

    1991-01-01

    This book is about the Stirling engine and its development from the heavy cast-iron machine of the 19th century to that of today. It is a history of a research effort spanning nearly 50 years, together with an outline of principles, and some technical details and descriptions of the more important engines. Contents include: the hot-air engine; the 20th-century revival; the Stirling cycle; rhombic-drive engines; heating and cooling; pistons and seals; electric generators and heat pumps; exotic heat sources; the engine and the environment; swashplate engines; and the past and the future.

  5. ARM - Engineering Change Request & Engineering Change Order Guidelines

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    resources, as soon as possible, when operational, science, or engineering needs require a quick engineering response where no design or redesign is required. Engineering Consultant...

  6. ARM - Engineering Work Request & Engineering Work Order Guidelines

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Work Request & Engineering Work Order Guidelines Page Contents: Introduction Discussion of the ARM Climate Research Facility Engineering Process: The Engineering Change Request ...

  7. Advanced Natural Gas Reciprocating Engine(s)

    SciTech Connect

    Pike, Edward

    2014-03-31

    The objective of the Cummins ARES program, in partnership with the US Department of Energy (DOE), is to develop advanced natural gas engine technologies that increase engine system efficiency at lower emissions levels while attaining lower cost of ownership. The goals of the project are to demonstrate engine system achieving 50% Brake Thermal Efficiency (BTE) in three phases, 44%, 47% and 50% (starting baseline efficiency at 36% BTE) and 0.1 g/bhp-hr NOx system out emissions (starting baseline NOx emissions at 2 – 4 g/bhp-hr NOx). Primary path towards above goals include high Brake Mean Effective Pressure (BMEP), improved closed cycle efficiency, increased air handling efficiency and optimized engine subsystems. Cummins has successfully demonstrated each of the phases of this program. All targets have been achieved through application of a combined set of advanced base engine technologies and Waste Heat Recovery from Charge Air and Exhaust streams, optimized and validated on the demonstration engine and other large engines. The following architectures were selected for each Phase: Phase 1: Lean Burn Spark Ignited (SI) Key Technologies: High Efficiency Turbocharging, Higher Efficiency Combustion System. In production on the 60/91L engines. Over 500MW of ARES Phase 1 technology has been sold. Phase 2: Lean Burn Technology with Exhaust Waste Heat Recovery (WHR) System Key Technologies: Advanced Ignition System, Combustion Improvement, Integrated Waste Heat Recovery System. Base engine technologies intended for production within 2 to 3 years Phase 3: Lean Burn Technology with Exhaust and Charge Air Waste Heat Recovery System Key Technologies: Lower Friction, New Cylinder Head Designs, Improved Integrated Waste Heat Recovery System. Intended for production within 5 to 6 years Cummins is committed to the launch of next generation of large advanced NG engines based on ARES technology to be commercialized worldwide.

  8. Symbiotic Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Symbiotic Engineering Jump to: navigation, search Name: Symbiotic Engineering Place: Boulder, CO Website: www.symbioticengineering.com References: Symbiotic Engineering1...

  9. ETA Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    ETA Engineering Jump to: navigation, search Logo: ETA Engineering Name: ETA Engineering Address: 4049 E. Presidio St., Suite 117 Place: Mesa, Arizona Zip: 85215 Product: renewable...

  10. RESEARCH PERSONNEL AND ENGINEERING STAFF

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Research Scientist (20%) Engineering Staff Walter Chapman, Mech. Engineer - To 93002 Greg Derrig, Senior Mechanical Engineer Lee Norris, Instr. Shop Supervisor - From 10102 ...

  11. Tomorrow's Women Engineers

    Energy.gov [DOE]

    Middle school girls in Argonne, Illinois, will meet with women engineers to work together on hands-on projects.

  12. Polymer Engineering Center

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Polymer Engineering Center University of Wisconsin-Madison Experimental and Numerical Studies of the Temperature Field in Selective Laser Sintering to Improve Shrinkage and Warpage Prediction Prof. Dr.-Ing. Natalie Rudolph Polymer Engineering Center Department of Mechanical Engineering University of Wisconsin-Madison 1513 University Ave Madison, WI 53706 Advanced Qualification of Additive Manufacturing Materials Workshop, July 20-21, 2015 in Santa Fe, NM Polymer Engineering Center University of

  13. Weapon Systems Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Systems Engineering Weapon Systems Engineering Serving the nation and our allies by providing a safe, secure, and effective stockpile Contact Us Division Leader (acting), Program Director J. Patrick Garcia Email Deputy Division Leader (acting), Stockpile Integration Jay Carnes Email Division Office (505) 606-0068 Human Resources Contacts Andrea Gonzales (505) 665-8043 Jeremy Vonharders (505) 665-5993 Careers/Jobs LANL nuclear engineer demonstrates a 3-D model Bradley Cox, a nuclear engineer

  14. Black Pine Engineering

    Energy.gov [DOE]

    Black Pine Engineering is commercializing a disruptive technology in the turbomachinery industry. Using a patented woven composite construction, Black Pine Engineering can make turbomachines (turbines, compressors) that are cheaper and lighter than competing technologies. Using this technology, Black Pine Engineering will sell turbo-compressors which solve the problem of wasted steam in geothermal power plants.

  15. 1997 LMITCO Environmental Monitoring Program Report for the Idaho National Engineering and Environmental Laboratory

    SciTech Connect

    Andersen, B.; Street, L.; Wilhelmsen, R.

    1998-09-01

    This report describes the calendar year 1997 environmental surveillance and compliance monitoring activities of the Lockheed Martin Idaho Technologies Company Environmental Monitoring Program performed at the Idaho National Engineering and Environmental Laboratory. This report includes results of sampling performed by the Radiological Environmental Surveillance, Site Environmental Surveillance, Drinking Water, Effluent Monitoring, Storm Water Monitoring, Groundwater Monitoring, and Special Request Monitoring Programs and compares 1997 data with program-specific regulatory guidelines and past data to evaluate trends. The primary purposes of the surveillance and monitoring activities are to evaluate environmental conditions, to provide and interpret data, to verify compliance with applicable regulations or standard, and to ensure protection of human health and the environment. Surveillance of environmental media did not identify any previously unknown environmental problems or trends indicating a loss of control or unplanned releases from facility operations. With the exception of one nitrogen sample in the disposal pond effluent stream and iron and total coliform bacteria in groundwater downgradient from one disposal pond, compliance with permits and applicable regulations was achieved. Data collected by the Environmental Monitoring Program demonstrate that public health and the environment were protected.

  16. Digital Twins of physical assets prevents unplanned downtime...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    materials, software, and analytics to commercialization, process, and business model best practices. The GE Store allows GE to leapfrog industries, to drive innovation,...

  17. Ice plug employed on subsea pipeline bend during repair

    SciTech Connect

    1997-12-22

    The first controlled-temperature ice plug in the bend of an offshore gas trunkline has been carried out for Phillips Petroleum Co. Norway on its Norpipe A.S. platform in the German sector of the North Sea. The procedure was part of a subsea valve repair operation. The ice plug was successfully formed offshore and tested to a differential pressure of 1,450 psi. Repair of two valves required only 5 days during which time gas production was operating at close to 50--60% via the platform bypass, says the service company. The paper discusses the procedure.

  18. Solar powered Stirling engine

    SciTech Connect

    Meijer, R.J.

    1987-11-24

    In a solar dish module which comprises a dish which receives incident solar rays and reflects them to a focus at which is located the combination of a receiver and a heat engine organized and arranged so that the heat energy of the reflected solar rays collected at the receiver powers the engine, and wherein the receiver and heat engine are supported from the dish by a framework, the improvement is described which comprises journal means for journaling at least the engine on the framework to maintain certain predetermined spatial orientation for the engine in relation to the direction of gravity irrespective of spatial orientation of the dish.

  19. Mod II engine performance

    SciTech Connect

    Richey, A.E.; Huang, S.C.

    1987-01-01

    The Automotive Stirling Engine Program (ASE) is directed at the development of a kinematic Stirling engine for automotive use. This program is sponsored by the Department of Energy (DOE) and managed by the NASA-Lewis Research Center (NASA-LeRC). Following proof-of-concept testing and development of promising performance values with early versions of the Stirling engine, a production-type automotive design, the Mod II engine, was developed. The design of this engine and its systems has been previously presented. Based on this design, the first engine has been built and development testing has started. Projections for this first engine build are presented in this paper. Results of initial tests are also given including identification of development items and formulation of plans for resolution of existing deficiencies.

  20. Engine intake system

    SciTech Connect

    Kanesaka, H.

    1989-02-07

    An intake system is described for an internal combustion engine, the system comprising: an intake passage having an intake port and an inertial supercharging intake pipe leading to the intake port; an intake valve mounted in the intake port and operatively connected to the engine for alternately opening and closing the intake port; a rotary valve operatively connected to the engine and disposed in the intake passage intermediate the inertial supercharging intake pipe and the intake port. The rotary valve is rotatable for opening and closing the intake passage, and timing adjusting means operatively connected to the engine and to the rotary valve for retarding the opening of the rotary valve relative to the opening of the intake valve at low engine speeds, and for advancing the opening of the rotary valve at high engine speeds, whereby the retarding and advancing of the opening of the rotary valve enables inertial supercharging in the intake pipe at both low and high engine speeds.

  1. The Illuminating Engineering Society and TM-24-13

    Energy.gov [DOE]

    In 2013, the Illuminating Engineering Society published TM-24-13, An Optional Method for Adjusting the Recommended Illuminance for Visually Demanding Tasks Within IES Illuminance Categories P through Y Based on Light Source Spectrum. This technical memorandum allows the use of spectrum in determining illuminance recommendations for visually demanding tasks, generally in the realm of commercial and industrial interior lighting. Such tasks require the ability to discern detail for efficient performance and include most reading tasks, as well as other critical vision tasks typically found in office, inspection, repair, manufacturing, education, and medical settings.

  2. Mechanical Engineering Department technical review

    SciTech Connect

    Carr, R.B.; Abrahamson, L.; Denney, R.M.; Dubois, B.E

    1982-01-01

    Technical achievements and publication abstracts related to research in the following Divisions of Lawrence Livermore Laboratory are reported in this biannual review: Nuclear Fuel Engineering; Nuclear Explosives Engineering; Weapons Engineering; Energy Systems Engineering; Engineering Sciences; Magnetic Fusion Engineering; and Material Fabrication. (LCL)

  3. Methods to alter levels of a DNA repair protein

    DOEpatents

    Petrini, John H.; Morgan, William Francis; Maser, Richard Scott; Carney, James Patrick

    2006-10-17

    An isolated and purified DNA molecule encoding a DNA repair protein, p95, is provided, as is isolated and purified p95. Also provided are methods of detecting p95 and DNA encoding p95. The invention further provides p95 knock-out mice.

  4. Thermosetting Polymer-Matrix Composites for Strucutral Repair Applications

    SciTech Connect

    William Kirby Goertzen

    2007-12-01

    Several classes of thermosetting polymer matrix composites were evaluated for use in structural repair applications. Initial work involved the characterization and evaluation of woven carbon fiber/epoxy matrix composites for structural pipeline repair. Cyanate ester resins were evaluated as a replacement for epoxy in composites for high-temperature pipe repair applications, and as the basis for adhesives for resin infusion repair of high-temperature composite materials. Carbon fiber/cyanate ester matrix composites and fumed silica/cyanate ester nanocomposites were evaluated for their thermal, mechanical, viscoelastic, and rheological properties as they relate to their structure, chemistry, and processing characteristics. The bisphenol E cyanate ester under investigation possesses a high glass transition temperature, excellent mechanical properties, and unique ambient temperature processability. The incorporate of fumed silica served to enhance the mechanical and rheological properties of the polymer and reduce thermal expansion without sacrificing glass transition or drastically altering curing kinetics. Characterization of the composites included dynamic mechanical analysis, thermomechanical analysis, differential scanning calorimetry, thermogravimetric analysis, rheological and rheokinetic evaluation, and transmission electron microscopy.

  5. Development of quick repairing technique for ceramic burner in hot stove of blast furnace

    SciTech Connect

    Kondo, Atsushi; Doura, Kouji; Nakamura, Hirofumi

    1997-12-31

    Refractories of ceramic burner in hot stoves at Wakayama No. 4 blast furnace were damaged. There are only three hot stoves, so repairing must be done in a short. Therefore, a quick repairing technique for ceramic burners has been developed, and two ceramic burners were repaired in just 48 hours.

  6. Stirling cycle rotary engine

    SciTech Connect

    Chandler, J.A.

    1988-06-28

    A Stirling cycle rotary engine for producing mechanical energy from heat generated by a heat source external to the engine, the engine including: an engine housing having an interior toroidal cavity with a central housing axis for receiving a working gas, the engine housing further having a cool as inlet port, a compressed gas outlet port, a heated compressed gas inlet port, and a hot exhaust gas outlet port at least three rotors each fixedly mounted to a respective rotor shaft and independently rotatable within the toroidal cavity about the central axis; each of the rotors including a pair of rotor blocks spaced radially on diametrically opposing sides of the respective rotor shaft, each rotor block having a radially fixed curva-linear outer surface for sealed rotational engagement with the engine housing.

  7. Staged combustion with piston engine and turbine engine supercharger

    DOEpatents

    Fischer, Larry E.; Anderson, Brian L.; O'Brien, Kevin C.

    2011-11-01

    A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

  8. Staged combustion with piston engine and turbine engine supercharger

    DOEpatents

    Fischer, Larry E.; Anderson, Brian L.; O'Brien, Kevin C.

    2006-05-09

    A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

  9. Integrated and Engineered Systems

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Integrated and Engineered Systems Integrated and Engineered Systems National security depends on science and technology. The United States relies on Los Alamos National Laboratory for the best of both. No place on Earth pursues a broader array of world-class scientific endeavors. Contact thumbnail of Business Development Executive Miranda Intrator Business Development Executive Richard P. Feynmnan Center for Innovation (505) 665-8315 Email Engineers at Los Alamos create, design, and build the

  10. Chemical Diagnostics and Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    CDE Chemical Diagnostics and Engineering We support stockpile manufacturing, surveillance, applied and basic energy sciences, threat reduction, public health, the environment, and space exploration. Contact Us Group Leader Peter Stark Deputy Group Leader Tom Yoshida Group Office (505) 667-5740 X-Ray Photoelectron Spectroscopy X-Ray Photoelectron Spectroscopy The Chemical Diagnostics and Engineering (C-CDE) Group combines engineering design with routine analytical services and state-of-the-art

  11. Systems Engineering | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Systems Engineering and Integration Systems Engineering and Integration Systems Engineering and Integration The fuel cycle in use today in the United States faces challenges in achieving the goals of sustainability. While used fuel is safely stored at reactor sites, the development of a system to manage all of the waste now and in the future has proven to be a persistently difficult task. Uncertainties about long-term resource availability make it difficult to properly value reusable material in

  12. Science & Engineering Capabilities

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Capabilities Science & Engineering Capabilities These capabilities are our science and engineering at work for the national security interest in areas from global climate to cyber security, from nonproliferation to new materials, from clean energy solutions to supercomputing. Accelerators, Electrodynamics» Energy» Materials Science» Bioscience: Bioenergy, Biosecurity, and Health» Engineering» National Security, Weapons Science» Chemical Science» High-Energy-Density Plasmas, Fluids»

  13. Explore: Mechanical Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Mechanical Engineering Explore a Career: Mechanical Engineering The work of mechanical engineers can be seen in everything from the design and fabrication of space-based custom instrumentation, to the development of new, innovative solutions for the nation's nuclear security problems. Super Cam and Chem Cam photographed to scale. Super Cam and Chem Cam photographed to scale. At Los Alamos National Laboratory, there is no shortage of challenge and career excitement for our highly skilled

  14. Electrical Engineer (Project Manager)

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Maintenance, Engineering & Construction Facility...

  15. Internal Combustion Engine Basics

    Energy.gov [DOE]

    Internal combustion engines provide outstanding drivability and durability, with more than 250 million highway transportation vehicles in the United States relying on them.

  16. Recent Graduate- Electrical Engineer

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Power System Operations Operations Engineering (J4200) 5555...

  17. XML Engineering Environment

    Energy Science and Technology Software Center

    2006-07-27

    The XML Engineering Environment is a reconfigurable software system that allows users to translate, enhance and route data from sources to sinks.

  18. Internet strategies for engineers

    SciTech Connect

    Hill, K.; Beruvides, M.G.

    1997-11-01

    This report contains viewgraphs on using internet strategies for engineers. How the internet is being used and what problems are being encountered are being considered.

  19. ARM - Engineering Processes

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Processes Workflow Graphic Engineering Workflow Document Tools for Workflow ECR ECO BCR Ingests Value-Added Products Reprocessing Instruments Data System Elements Field...

  20. Nuclear Power & Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management ...

  1. Supervisory Electrical Engineer

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Maintenance, (J5640) Engineering and Construciton 5555 E....

  2. Stirling engine heating system

    SciTech Connect

    Johansson, L.N.; Houtman, W.H.; Percival, W.H.

    1988-06-28

    A hot gas engine is described wherein a working gas flows back and forth in a closed path between a relatively cooler compression cylinder side of the engine and a relatively hotter expansion cylinder side of the engine and the path contains means including a heat source and a heat sink acting upon the gas in cooperation with the compression and expansion cylinders to cause the gas to execute a thermodynamic cycle wherein useful mechanical output power is developed by the engine, the improvement in the heat source which comprises a plurality of individual tubes each forming a portion of the closed path for the working gas.

  3. SCADA Engineering Solutions

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering ...

  4. Engine and method for operating an engine

    DOEpatents

    Lauper, Jr., John Christian; Willi, Martin Leo; Thirunavukarasu, Balamurugesh; Gong, Weidong

    2008-12-23

    A method of operating an engine is provided. The method may include supplying a combustible combination of reactants to a combustion chamber of the engine, which may include supplying a first hydrocarbon fuel, hydrogen fuel, and a second hydrocarbon fuel to the combustion chamber. Supplying the second hydrocarbon fuel to the combustion chamber may include at least one of supplying at least a portion of the second hydrocarbon fuel from an outlet port that discharges into an intake system of the engine and supplying at least a portion of the second hydrocarbon fuel from an outlet port that discharges into the combustion chamber. Additionally, the method may include combusting the combustible combination of reactants in the combustion chamber.

  5. Career Map: Industrial Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Industrial Engineer Career Map: Industrial Engineer Two industrial engineers analyze data on a computer. Industrial Engineer Position Title Industrial Engineer Alternate Title(s) Production Engineer, Process Engineer, Manufacturing Engineer, Industrial Production Manager Education & Training Level Advanced, Bachelors required, prefer graduate degree Education & Training Level Description Industrial engineers should have a bachelor's degree in industrial engineering. Employers also value

  6. Career Map: Research Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engineer Career Map: Research Engineer Two research engineers wearing safety glasses view results of an experiment. Research Engineer Position Title Research Engineer Alternate Title(s) Government Engineer, Research and Development Engineer, Basic Research Engineer, Component Researcher, Materials Engineer Education & Training Level Bachelor's degree required, prefer graduate degree Education & Training Level Description Research engineers must have a bachelor's degree. Employers value

  7. Perturbing engine performance measurements to determine optimal engine control settings

    DOEpatents

    Jiang, Li; Lee, Donghoon; Yilmaz, Hakan; Stefanopoulou, Anna

    2014-12-30

    Methods and systems for optimizing a performance of a vehicle engine are provided. The method includes determining an initial value for a first engine control parameter based on one or more detected operating conditions of the vehicle engine, determining a value of an engine performance variable, and artificially perturbing the determined value of the engine performance variable. The initial value for the first engine control parameter is then adjusted based on the perturbed engine performance variable causing the engine performance variable to approach a target engine performance variable. Operation of the vehicle engine is controlled based on the adjusted initial value for the first engine control parameter. These acts are repeated until the engine performance variable approaches the target engine performance variable.

  8. Computational Science and Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Computational Science and Engineering NETL's Computational Science and Engineering competency consists of conducting applied scientific research and developing physics-based simulation models, methods, and tools to support the development and deployment of novel process and equipment designs. Research includes advanced computations to generate information beyond the reach of experiments alone by integrating experimental and computational sciences across different length and time scales. Specific

  9. Stirling engine piston ring

    SciTech Connect

    Howarth, R.B.

    1983-12-27

    A piston ring design for a Stirling engine wherein the contact pressure between the piston and the cylinder is maintained at a uniform level, independent of engine conditions through a balancing of the pressure exerted upon the ring's surface and thereby allowing the contact pressure on the ring to be predetermined through the use of a preloaded expander ring. 2 figs.

  10. Stirling engine piston ring

    DOEpatents

    Howarth, Roy B.

    1983-01-01

    A piston ring design for a Stirling engine wherein the contact pressure between the piston and the cylinder is maintained at a uniform level, independent of engine conditions through a balancing of the pressure exerted upon the ring's surface and thereby allowing the contact pressure on the ring to be predetermined through the use of a preloaded expander ring.

  11. Engineered Natural Systems

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineered Natural Systems Onsite researchers at NETL develop processes, techniques, instrumentation, and relationships to collect, interpret, and disseminate data in an effort to characterize and understand the behavior of engineered natural systems. Research includes investigating theoretical and observed phenomena to support program needs and developing new concepts in the areas of analytical biogeochemistry, geology, and monitoring. Specific expertise includes: Analytical- Bio- and Geo-

  12. Engineering Division Superconducting

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    & Engineering Division Superconducting Magnet Technology for Fusion and Large Scale Applications Joseph V. Minervini Massachusetts Institute of Technology Plasma Science and Fusion Center Princeton Plasma Physics Laboratory Colloquium Princeton, NJ October 15, 2014 Technology & Engineering Division Contents * Fusion Magnets - Present and Future - Vision - State-of-the-art - New developments in superconductors * Advanced fusion magnet technology * Other large scale applications of

  13. Free piston stirling engines

    SciTech Connect

    Walker, C.

    1985-01-01

    This book presents a basic introduction to free piston Stirling engine technology through a review of specialized background material. It also includes information based on actual construction and operation experience with these machines, as well as theoretical and analytical insights into free piston Stirling engine technology.

  14. Advanced Natural Gas Reciprocating Engine(s)

    SciTech Connect

    Kwok, Doris; Boucher, Cheryl

    2009-09-30

    Energy independence and fuel savings are hallmarks of the nation’s energy strategy. The advancement of natural gas reciprocating engine power generation technology is critical to the nation’s future. A new engine platform that meets the efficiency, emissions, fuel flexibility, cost and reliability/maintainability targets will enable American manufacturers to have highly competitive products that provide substantial environmental and economic benefits in the US and in international markets. Along with Cummins and Waukesha, Caterpillar participated in a multiyear cooperative agreement with the Department of Energy to create a 50% efficiency natural gas powered reciprocating engine system with a 95% reduction in NOx emissions by the year 2013. This platform developed under this agreement will be a significant contributor to the US energy strategy and will enable gas engine technology to remain a highly competitive choice, meeting customer cost of electricity targets, and regulatory environmental standard. Engine development under the Advanced Reciprocating Engine System (ARES) program was divided into phases, with the ultimate goal being approached in a series of incremental steps. This incremental approach would promote the commercialization of ARES technologies as soon as they emerged from development and would provide a technical and commercial foundation of later-developing technologies. Demonstrations of the Phase I and Phase II technology were completed in 2004 and 2008, respectively. Program tasks in Phase III included component and system development and testing from 2009-2012. Two advanced ignition technology evaluations were investigated under the ARES program: laser ignition and distributed ignition (DIGN). In collaboration with Colorado State University (CSU), a laser ignition system was developed to provide ignition at lean burn and high boost conditions. Much work has been performed in Caterpillar’s DIGN program under the ARES program. This work

  15. Metabolic Engineering VII Conference

    SciTech Connect

    Kevin Korpics

    2012-12-04

    The aims of this Metabolic Engineering conference are to provide a forum for academic and industrial researchers in the field; to bring together the different scientific disciplines that contribute to the design, analysis and optimization of metabolic pathways; and to explore the role of Metabolic Engineering in the areas of health and sustainability. Presentations, both written and oral, panel discussions, and workshops will focus on both applications and techniques used for pathway engineering. Various applications including bioenergy, industrial chemicals and materials, drug targets, health, agriculture, and nutrition will be discussed. Workshops focused on technology development for mathematical and experimental techniques important for metabolic engineering applications will be held for more in depth discussion. This 2008 meeting will celebrate our conference tradition of high quality and relevance to both industrial and academic participants, with topics ranging from the frontiers of fundamental science to the practical aspects of metabolic engineering.

  16. Thermoacoustic engines and refrigerators

    SciTech Connect

    Swift, G.

    1996-12-31

    This report is a transcript of a practice lecture given in preparation for a review lecture on the operation of thermoacoustic engines and refrigerators. The author begins by a brief review of the thermodynamic principles underlying the operation of thermoacoustic engines and refrigerators. Remember from thermodynamics class that there are two kinds of heat engines, the heat engine or the prime mover which produces work from heat, and the refrigerator or heat pump that uses work to pump heat. The device operates between two thermal reservoirs at temperatures T{sub hot} and T{sub cold}. In the heat engine, heat flows into the device from the reservoir at T{sub hot}, produces work, and delivers waste heat into the reservoir at T{sub cold}. In the refrigerator, work flows into the device, lifting heat Q{sub cold} from reservoir at T{sub cold} and rejecting waste heat into the reservoir at T{sub hot}.

  17. Cycling with BRCA2 from DNA repair to mitosis

    SciTech Connect

    Lee, Hyunsook

    2014-11-15

    Genetic integrity in proliferating cells is guaranteed by the harmony of DNA replication, appropriate DNA repair, and segregation of the duplicated genome. Breast cancer susceptibility gene BRCA2 is a unique tumor suppressor that is involved in all three processes. Hence, it is critical in genome maintenance. The functions of BRCA2 in DNA repair and homology-directed recombination (HDR) have been reviewed numerous times. Here, I will briefly go through the functions of BRCA2 in HDR and focus on the emerging roles of BRCA2 in telomere homeostasis and mitosis, then discuss how BRCA2 exerts distinct functions in a cell-cycle specific manner in the maintenance of genomic integrity. - Highlights: • BRCA2 is a multifaceted tumor suppressor and is crucial in genetic integrity. • BRCA2 exerts distinct functions in cell cycle-specific manner. • Mitotic kinases regulate diverse functions of BRCA2 in mitosis and cytokinesis.

  18. Two-Stroke Engines: New Frontier in Engine Efficiency

    Energy.gov [DOE]

    Companies are revisiting two-stroke engines in the hopes of finding a new frontier in engine efficiency without the additional cost. But, not all two-stroke engines are the same.

  19. Thermostatic/orifice trap reduces fuel, repair costs

    SciTech Connect

    Not Available

    1982-11-01

    This article is an evaluation of a steam trap that combines the continuous drain oriface with a thermostatically controlled trap oriface to efficiently remove condensate from virtually any steam system within its operating limits. This trap effectively reduces fuel and repair costs and has a capacity of 6000 il/hr, handles various pressures up to 600 psig, and operates against back pressures up to 90% of inlet pressure.

  20. E85 Optimized Engine

    SciTech Connect

    Bower, Stanley

    2011-12-31

    A 5.0L V8 twin-turbocharged direct injection engine was designed, built, and tested for the purpose of assessing the fuel economy and performance in the F-Series pickup of the Dual Fuel engine concept and of an E85 optimized FFV engine. Additionally, production 3.5L gasoline turbocharged direct injection (GTDI) EcoBoost engines were converted to Dual Fuel capability and used to evaluate the cold start emissions and fuel system robustness of the Dual Fuel engine concept. Project objectives were: to develop a roadmap to demonstrate a minimized fuel economy penalty for an F-Series FFV truck with a highly boosted, high compression ratio spark ignition engine optimized to run with ethanol fuel blends up to E85; to reduce FTP 75 energy consumption by 15% - 20% compared to an equally powered vehicle with a current production gasoline engine; and to meet ULEV emissions, with a stretch target of ULEV II / Tier II Bin 4. All project objectives were met or exceeded.

  1. Interim report on the assessment of engineering issues for compact high-field ignition devices

    SciTech Connect

    Flanagan, C.A.

    1986-04-01

    The engineering issues addressed at the workshop included the overall configuration, layout, and assembly; limiter and first-wall energy removal; magnet system structure design; fabricability; repairability; and costs. In performing the assessment, the primary features and characteristics of each concept under study were reviewed as representative of this class of ignition device. The emphasis was to understand the key engineering areas of concern for this class of device and deliberately not attempt to define an optimum design or to choose a best approach. The assessment concluded that compact ignition tokamaks, as represented by the three concepts under study, are feasible. A number of critical engineering issues were identified, and all appear to have tractable solutions. The engineering issues appear quite challenging, and to obtain increased confidence in the apparent design solutions requires completion of the next level of design detail, complemented by appropriate development programs and testing.

  2. Heavy Truck Engine Program

    SciTech Connect

    Nelson, Christopher

    2009-01-08

    The Heavy Duty Truck Engine Program at Cummins embodied three significant development phases. All phases of work strove to demonstrate a high level of diesel engine efficiency in the face of increasingly stringent emission requirements. Concurrently, aftertreatment system development and refinement was pursued in support of these efficiency demonstrations. The program's first phase focused on the demonstration in-vehicle of a high level of heavy duty diesel engine efficiency (45% Brake Thermal Efficiency) at a typical cruise condition while achieving composite emissions results which met the 2004 U.S. EPA legislated standards. With a combination of engine combustion calibration tuning and the development and application of Urea-based SCR and particulate aftertreatment, these demonstrations were successfully performed by Q4 of 2002. The second phase of the program directed efforts towards an in-vehicle demonstration of an engine system capable of meeting 2007 U.S. EPA legislated emissions requirements while achieving 45% Brake Thermal Efficiency at cruise conditions. Through further combustion optimization, the refinement of Cummins Cooled EGR architecture, the application of a high pressure common rail fuel system and the incorporation of optimized engine parasitics, Cummins Inc. successfully demonstrated these deliverables in Q2 of 2004. The program's final phase set a stretch goal of demonstrating 50% Brake Thermal Efficiency from a heavy duty diesel engine system capable of meeting 2010 U.S. EPA legislated emissions requirements. Cummins chose to pursue this goal through further combustion development and refinement of the Cooled EGR system architecture and also applied a Rankine cycle Waste Heat Recovery technique to convert otherwise wasted thermal energy to useful power. The engine and heat recovery system was demonstrated to achieve 50% Brake Thermal Efficiency while operating at a torque peak condition in second quarter, 2006. The 50% efficient engine

  3. Career Map: Electrical Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Electrical Engineer Career Map: Electrical Engineer Two electrical engineers inspect the electrical components to a turbine. Electrical Engineer Position Title Electrical Engineer Alternate Title(s) Electronics Engineer, Project Engineer, Power Systems, Transmission Engineer Education & Training Level Advanced, bachelor's required, prefer graduate degree Education & Training Level Description Electrical engineers must have a bachelor's degree. Employers also value practical experience,

  4. VALUE ENGINEERING.PDF

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    6 I N S P E C T I O N R E P O R T U.S. DEPARTMENT OF ENERGY OFFICE OF INSPECTOR GENERAL OFFICE OF INSPECTIONS FOLLOW-ON INSPECTION OF THE DEPARTMENT OF ENERGY'S VALUE ENGINEERING PROGRAM DECEMBER 2001 U.S. DEPARTMENT OF ENERGY Washington, DC 20585 December 20, 2001 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman /s/ Inspector General SUBJECT: INFORMATION: Report on "Follow-on Inspection of the Department of Energy's Value Engineering Program" BACKGROUND Value Engineering is a

  5. Principles of models based engineering

    SciTech Connect

    Dolin, R.M.; Hefele, J.

    1996-11-01

    This report describes a Models Based Engineering (MBE) philosophy and implementation strategy that has been developed at Los Alamos National Laboratory`s Center for Advanced Engineering Technology. A major theme in this discussion is that models based engineering is an information management technology enabling the development of information driven engineering. Unlike other information management technologies, models based engineering encompasses the breadth of engineering information, from design intent through product definition to consumer application.

  6. BEW Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Services Product: BEW Engineering provides engineering consulting services, and performs research and development in electrical power systems for bulk power and distributed energy...

  7. Taitem Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Taitem Engineering Jump to: navigation, search Name: Taitem Engineering Place: Ithaca, NY Information About Partnership with NREL Partnership with NREL Yes Partnership Type "CRADA"...

  8. Pract Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Pract Engineering Jump to: navigation, search Name: Pract Engineering Address: 1150 55th Street, Suite C Place: Emeryville, California Zip: 94608 Region: Bay Area Sector: Renewable...

  9. ION Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    ION Engineering Jump to: navigation, search Name: ION Engineering Place: Boulder, Colorado Zip: 80301 Sector: Carbon Product: ION is the first clean-tech company to successfully...

  10. Nuclear Engineering | Argonne National Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Nuclear Engineering Advancing the safe and secure use of nuclear energy Argonne's Nuclear Engineering (NE) division works to advance nuclear energy as a proven, abundant and ...

  11. Windward Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Windward Engineering Jump to: navigation, search Name: Windward Engineering Place: Spanish Fork, Utah Zip: 84660 Sector: Wind energy Product: Provides simulations, testing and...

  12. Defining engine efficiency limits

    Energy.gov [DOE]

    Investigates the potential to reduce engine efficiency losses and how this impacts the entire system in terms of a direct increase in work output or a change in the loss mechanism.

  13. Energy Technology Engineering Center

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Energy Technology Engineering Center (ETEC) is located within Area IV of the Santa Susana Field Laboratory. The ETEC occupies 90-acres within the 290 acre site. The Santa Susana Field...

  14. INL '@work' Nuclear Engineer

    SciTech Connect

    McLean, Heather

    2008-01-01

    Heather MacLean talks about her job as a Nuclear Engineer for Idaho National Laboratory. For more information about INL careers, visit http://www.facebook.com/idahonationallaboratory.

  15. Polymer Engineering Center

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Powder bed fusion: SLS Material extrusion: FDM Directed energy depos.: AFP v v v F q ... Pfeifer, 2015 4" Polymer Engineering Center University of Wisconsin-Madison Layup on cold ...

  16. General Engineer (Project Manager)

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Desert Southwest Region Engineering and Construction (G5600) 615 S. 43rd Avenue...

  17. Student Trainee (General Engineer)

    Energy.gov [DOE]

    This position is located in Power Services (P) of the Bonneville Power Administration (BPA). The position involves periods of pertinent formal education and periods of employment in an engineering...

  18. Displacer for Stirling engine

    SciTech Connect

    Brown, A. T.

    1985-12-24

    In a Stirling engine and the like, a displacer piston having a plurality of internal baffles and insulation so as to prevent undesired heat transfer across the displacer piston.

  19. Information Systems Engineering

    Energy.gov [DOE]

    The OCIO is dedicated to supporting the development and maintenance of DOE Department wide and site-specific software and IT systems engineering initiatives.  This webpage contains resources,...

  20. HANFORD ENGINEER WORKS

    Office of Legacy Management (LM)

    HANFORD ENGINEER WORKS IJd *P-t - - ssiticatiC+n cwcetted rat G.E. NUCLEONICS PROJECT xi I @L.%&--G-ENERAI,@ ELECTRIC z ,m ...-. I--..-. By Authority of. COMPANY . Atmic ...

  1. INL '@work' Nuclear Engineer

    ScienceCinema

    McLean, Heather

    2016-07-12

    Heather MacLean talks about her job as a Nuclear Engineer for Idaho National Laboratory. For more information about INL careers, visit http://www.facebook.com/idahonationallaboratory.

  2. Civil Engineer (Structural)

    Energy.gov [DOE]

    This position is located in Structural Design (TELD). The primary purpose of this position is to serve as a senior engineer responsible for loading, design, and analysis of all structures on BPA's...

  3. Rotary vee engine

    SciTech Connect

    Sullivan, R.W.; Holder, T.J.; Buchanan, M.F.

    1991-05-14

    This patent describes a rotary vee engine. It comprises: a housing; two cylinder blocks; angled support shaft means; an air/fuel system; angled pistons; and sealing means for sealing the combustion chamber.

  4. Rotary internal combustion engine

    SciTech Connect

    Murray, J.L.; Mosca, J.O.

    1992-02-25

    This patent describes a rotary internal combustion engine. It includes a housing; a cam track internally disposed within the housing and adapted to receive a cam follower; an engine block disposed within the housing, the engine block being relatively rotatable within the housing about a central axis; means connectable to an external drive member for translating the relative rotation of the engine block with respect to the housing into useful work; at least one radially arranged cylinder assembly on the block, each cylinder assembly including a cylinder having a longitudinal axis extending generally radially outwardly from the rotational axis of the block, the cylinder including means defining an end wall, a piston member disposed within the cylinder and adapted to reciprocate within the cylinder; the piston, cylinder and cylinder end wall together.

  5. Section 44: Engineered Barriers

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Notice 44.8.1.2 Hydration Studies 44.8.1.3 Refinement to ... is an uncertain process, the MgO engineered barrier reduces uncertainty in the repository chemical conditions by ...

  6. Simulation-Based Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Simulation-Based Engineering Simulation-Based Engineering is focused on predicting the behavior of complex multiphase flow reactors used in fossil-energy technologies. This effort combines theory, computational modeling, experiments, and industrial input. Physics- and science-based computational models and tools are needed to support the development and deployment of advanced fossil-fuel energy devices such as gasifiers and carbon capture reactors. It is critical to develop a practical framework

  7. Internal combustion engine

    SciTech Connect

    Bernauer, O.

    1980-10-07

    An internal combustion engine is described that has walls delimiting the working space or spaces of the internal combustion engine, in which a hydrogen-impervious, encapsulated metal hydride storage device is provided which is in heat-conducting contact with these walls; the interior of the encapsulation is adapted to be selectively connected to a source of hydrogen and/or to a separate further hydrogen storage device.

  8. Liquid metal thermoacoustic engine

    SciTech Connect

    Swift, G.W.; Migliori, A.; Wheatley, J.C.

    1986-01-01

    We are studying a liquid metal thermoacoustic engine both theoretically and experimentally. This type of engine promises to produce large quantities of electrical energy from heat at modest efficiency with no moving parts. A sound wave is usually thought of as consisting of pressure oscillations, but always attendant to the pressure oscillation are temperature oscillations. The combination produces a rich variety of ''thermoacoustic'' effects. These effects are usually so small that they are never noticed in everyday life; nevertheless under the right circumstances they can be harnessed to produce powerful heat engines, heat pumps, and refrigerators. In our liquid metal thermoacoustic engine, heat flow from a high temperature source to a low temperature sink generates a high-amplitude standing acoustic wave in liquid sodium. This acoustic power is converted to electric power by a simple magnetohydrodynamic effect at the acoustic oscillation frequency. We have developed a detailed thermoacoustic theory applicable to this engine, and find that a reasonably designed liquid sodium engine operating between 700/sup 0/C and 100/sup 0/C should generate about 60 W/cm/sup 2/ of acoustic power at about 1/3 of Carnot's efficiency. Construction of a 3000 W-thermal laboratory model engine has just been completed, and we have exciting preliminary experimental results as of the time of preparation of this manuscript showing, basically, that the engine works. We have also designed and built a 1 kHz liquid sodium magnetohydrodynamic generator and have extensive measurements on it. It is now very well characterized both experimentally and theoretically. The first generator of its kind, it already converts acoustic power to electric power with 40% efficiency. 16 refs., 5 figs.

  9. Stirling engine power control

    SciTech Connect

    Fraser, J.P.

    1983-08-02

    A power control method and apparatus for a Stirling engine including a valved duct connected to the junction of the regenerator and the cooler and running to a bypass chamber connected between the heater and the cylinder. An oscillating zone of demarcation between the hot and cold portions of the working gas is established in the bypass chamber, and the engine pistons and cylinders can run cold. 3 figs.

  10. Stirling engine power control

    DOEpatents

    Fraser, James P.

    1983-01-01

    A power control method and apparatus for a Stirling engine including a valved duct connected to the junction of the regenerator and the cooler and running to a bypass chamber connected between the heater and the cylinder. An oscillating zone of demarcation between the hot and cold portions of the working gas is established in the bypass chamber, and the engine pistons and cylinders can run cold.

  11. Science, Technology & Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Alan Bishop selected to lead LANL Science, Technology & Engineering directorate August 17, 2012 LOS ALAMOS, NEW MEXICO, August 17, 2012-Los Alamos National Laboratory Director Charles McMillan announced today that after a yearlong, nationwide search, Alan Bishop has been selected to be the Laboratory's next Principal Associate Director for Science, Technology, and Engineering (PADSTE). Bishop has been acting in that role - 2 - since Aug. 29, 2011.Over the course of a distinguished 30-year

  12. NGNP Engineering Status

    SciTech Connect

    John Collins

    2010-08-01

    The objectives of Phase 1 Engineering and Design scope are to: 1) complete the initial design activities for a prototype nuclear reactor and plant that is capable of co-generating electricity, hydrogen, and process heat; 2) identify technological aspects of the NGNP that need further advancement by research and development activities; and 3) provide engineering support to the early licensing process, including technical input to white papers and developing the basis for future safety analyses.

  13. Windmills for ramjet engine

    SciTech Connect

    Giles, H.L.

    1983-01-18

    A solid fueled ramjet engine comprising solid fuel within a combustion chamber in the form of a hollow cylinder, and a windmill at the entrance to the hollow cylinder for promoting better distribution of the air, better mixing of the air and combustion gases, and more complete combustion of the solid fuel. The windmill is turned by the incoming airflow and can rotate a generator to provide a source of electrical power for the aircraft on which the engine is used.

  14. Intrinsically irreversible heat engine

    DOEpatents

    Wheatley, J.C.; Swift, G.W.; Migliori, A.

    1984-01-01

    A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. The second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat.

  15. Intrinsically irreversible heat engine

    DOEpatents

    Wheatley, J.C.; Swift, G.W.; Migliori, A.

    1984-12-25

    A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. The second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat. 11 figs.

  16. Intrinsically irreversible heat engine

    DOEpatents

    Wheatley, John C.; Swift, Gregory W.; Migliori, Albert

    1984-01-01

    A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. the second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat.

  17. Engine systems and methods of operating an engine

    SciTech Connect

    Scotto, Mark Vincent

    2015-08-25

    One embodiment of the present invention is a unique method for operating an engine. Another embodiment is a unique engine system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for engines and engine systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.

  18. Career Map: Mechanical Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Mechanical Engineer Career Map: Mechanical Engineer A mechanical engineer works with a large yellow robotic arm. Mechanical Engineer Position Title Mechanical Engineer Alternate Title(s) Project Engineer, Quality Engineer, Research Engineer, Design Engineer, Sales Engineer Education & Training Level Advanced, Bachelor's degree required, prefer graduate degree Education & Training Level Description Mechanical engineers need a bachelor's degree. A graduate degree is typically needed for

  19. Advanced Reciprocating Engine Systems (ARES)

    Energy.gov [DOE]

    Advanced Natural Gas Reciprocating Engines Increase Efficiency and Reduce Emissions for Distributed Power Generation Applications

  20. The Joys of Nuclear Engineering

    ScienceCinema

    Jon Carmack

    2016-07-12

    Nuclear fuels researcher Jon Carmack talks about the satisfactions of a career in nuclear engineering.

  1. One "Cool Tool" That's Helping Repair Your DNA | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    "Cool Tool" That's Helping Repair Your DNA One "Cool Tool" That's Helping Repair Your DNA April 18, 2011 - 1:20pm Addthis Charles Rousseaux Charles Rousseaux Senior Communications Specialist (detailee) What are the key facts? Berkeley Lab's Advanced Light Source produces x-ray light that shines a billion times bright than the sun. Scientists discovered the motor that drives the actual repair of the DNA repair machine called MRN, which is tethered to the rest of the machine in

  2. Building America Top Innovations 2013 Profile – Window Replacement, Rehabilitation, & Repair Guide

    SciTech Connect

    none,

    2013-09-01

    In this Top Innovation profile, Building Science Corporation guides contractors through several options for repairing or replacing old windows to improve air sealing and thermal performance.

  3. WPN 12-9: Weatherization Assistance Program Incidental Repair Measure Guidance

    Energy.gov [DOE]

    To provide guidance on incidental repair measures (IRM) allowable under the U.S. Department of Energy Weatherization Assistance Program (WAP).

  4. Brain necrosis after fractionated radiation therapy: Is the halftime for repair longer than we thought?

    SciTech Connect

    Bender, Edward T.

    2012-11-15

    Purpose: To derive a radiobiological model that enables the estimation of brain necrosis and spinal cord myelopathy rates for a variety of fractionation schemes, and to compare repair effects between brain and spinal cord. Methods: Sigmoidal dose response relationships for brain radiation necrosis and spinal cord myelopathy are derived from clinical data using nonlinear regression. Three different repair models are considered and the repair halftimes are included as regression parameters. Results: For radiation necrosis, a repair halftime of 38.1 (range 6.9-76) h is found with monoexponential repair, while for spinal cord myelopathy, a repair halftime of 4.1 (range 0-8) h is found. The best-fit alpha beta ratio is 0.96 (range 0.24-1.73)Conclusions: A radiobiological model that includes repair corrections can describe the clinical data for a variety of fraction sizes, fractionation schedules, and total doses. Modeling suggests a relatively long repair halftime for brain necrosis. This study suggests that the repair halftime for late radiation effects in the brain may be longer than is currently thought. If confirmed in future studies, this may lead to a re-evaluation of radiation fractionation schedules for some CNS diseases, particularly for those diseases where fractionated stereotactic radiation therapy is used.

  5. adaptation of DNA repair Byrne, Rose T; Klingele, Audrey J; Cabot...

    Office of Scientific and Technical Information (OSTI)

    Evolution of extreme resistance to ionizing radiation via genetic adaptation of DNA repair Byrne, Rose T; Klingele, Audrey J; Cabot, Eric L; Schackwitz, Wendy S; Martin, Jeffrey A;...

  6. Disruption of Maternal DNA Repair Increases Sperm-DerivedChromosomal Aberrations

    SciTech Connect

    Marchetti, Francesco; Essers, Jeroun; Kanaar, Roland; Wyrobek,Andrew J.

    2007-02-07

    The final weeks of male germ cell differentiation occur in aDNA repair-deficient environment and normal development depends on theability of the egg to repair DNA damage in the fertilizing sperm. Geneticdisruption of maternal DNA double-strand break repair pathways in micesignificantly increased the frequency of zygotes with chromosomalstructural aberrations after paternal exposure to ionizing radiation.These findings demonstrate that radiation-induced DNA sperm lesions arerepaired after fertilization by maternal factors and suggest that geneticvariation in maternal DNA repair can modulate the risk of early pregnancylosses and of children with chromosomal aberrations of paternalorigin.

  7. Liquid-sodium thermoacoustic engine

    SciTech Connect

    Migliori, A.; Swift, G.W.

    1988-08-01

    We have constructed a thermoacoustic engine that uses liquid sodium as its working substance. The engine generates acoustic power using heat flowing from a high-temperature source to a low-temperature sink. The measured performance of this engine disagrees significantly with numerical calculations based on our theory of thermoacoustic engines. The efficiency of the engine is a substantial fraction of Carnot's efficiency, and its power density is comparable to that of the conventional heat engines in widespread use. Thus we expect this type of engine to be of practical, economic importance.

  8. International combustion engines; Applied thermosciences

    SciTech Connect

    Ferguson, C.R.

    1985-01-01

    Focusing on thermodynamic analysis - from the requisite first law to more sophisticated applications - and engine design, this book is an introduction to internal combustion engines and their mechanics. It covers the many types of internal combustion engines, including spark ignition, compression ignition, and stratified charge engines, and examines processes, keeping equations of state simple by assuming constant specific heats. Equations are limited to heat engines and later applied to combustion engines. Topics include realistic equations of state, stroichiometry, predictions of chemical equilibrium, engine performance criteria, and friction, which is discussed in terms of the hydrodynamic theory of lubrication and experimental methods such as dimensional analysis.

  9. Software engineering and graphical programming languages

    SciTech Connect

    Jefferson, K.; Porter, T.; West, T.

    1997-11-01

    This report contains viewgraphs on software engineering and adapting engineering processes to a graphical programming languages.

  10. Single rotor turbine engine

    DOEpatents

    Platts, David A.

    2002-01-01

    There has been invented a turbine engine with a single rotor which cools the engine, functions as a radial compressor, pushes air through the engine to the ignition point, and acts as an axial turbine for powering the compressor. The invention engine is designed to use a simple scheme of conventional passage shapes to provide both a radial and axial flow pattern through the single rotor, thereby allowing the radial intake air flow to cool the turbine blades and turbine exhaust gases in an axial flow to be used for energy transfer. In an alternative embodiment, an electric generator is incorporated in the engine to specifically adapt the invention for power generation. Magnets are embedded in the exhaust face of the single rotor proximate to a ring of stationary magnetic cores with windings to provide for the generation of electricity. In this alternative embodiment, the turbine is a radial inflow turbine rather than an axial turbine as used in the first embodiment. Radial inflow passages of conventional design are interleaved with radial compressor passages to allow the intake air to cool the turbine blades.

  11. Gas-Fired Reciprocating Engines

    Energy.gov [DOE]

    The reciprocating, or piston-driven, engine is a widespread and well-known technology. Also called internal combustion engines, reciprocating engines require fuel, air, compression, and a combustion source to function. Depending on the ignition source, they generally fall into two categories: (1) spark-ignited engines, typically fueled by gasoline or natural gas, and (2) compression-ignited engines, typically fueled by diesel oil fuel.

  12. Ceramic Automotive Stirling Engine Program

    SciTech Connect

    Not Available

    1986-08-01

    The Ceramic Automotive Stirling Engine Program evaluated the application of advanced ceramic materials to an automotive Stirling engine. The objective of the program was to evaluate the technical feasibility of utilizing advanced ceramics to increase peak engine operating temperature, and to evaluate the performance benefits of such an increase. Manufacturing cost estimates were also developed for various ceramic engine components and compared with conventional metallic engine component costs.

  13. Visual Engineering | The Ames Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Visual Engineering Visual Engineering At the Ames Laboratory we are working with Iowa State Image University to create an interactive visual engineering environment to design new products, better power plants, or any other engineering products. In addition, Mark Bryden and Doug McCorkle, along with collaborators at NETL and Reaction Engineering International have developed open-source software to look at the physics behind power plant operation within this visual environment. Image Their VE-PSI

  14. Externally heated valve engine -- An alternative to the Stirling engine

    SciTech Connect

    Kazimierski, Z.; Brzeski, L.

    1996-12-31

    A new concept of the Externally Heated Valve (EHV) engine is presented. The principle of the engine operation is described in the introduction to the paper. Heat delivered to the working medium (air) in the heater, or several heaters working commutatively, can come from a combustion chamber or other heat generator such as nuclear reactors or solar collectors. The engine construction is original entirely different from the well-known Stirling engine. New results of the EHV engine computer modeling are presented. This is connected with a new kind of the annular heater applied to the EHV engine. A whirl motion inside the heater is caused to ensure the proper condition of the heat exchanger during the whole engine cycle. Three heaters working commutatively have been considered in this model. Comparisons between the power and efficiency of the Stirling engine and EHV engine have been performed for the same engine capacity, rotational frequency, maximum and minimum temperatures of the working gas and for the same mean pressures of both the engine cycles. The power of the EHV engine is in this case over three times higher than the Stirling engine power, while the efficiency of both the engines is almost the same.

  15. Free-piston engine

    DOEpatents

    Van Blarigan, Peter

    2001-01-01

    A combustion system which can utilize high compression ratios, short burn durations, and homogeneous fuel/air mixtures in conjunction with low equivalence ratios. In particular, a free-piston, two-stroke autoignition internal combustion engine including an electrical generator having a linear alternator with a double-ended free piston that oscillates inside a closed cylinder is provided. Fuel and air are introduced in a two-stroke cycle fashion on each end, where the cylinder charge is compressed to the point of autoignition without spark plugs. The piston is driven in an oscillating motion as combustion occurs successively on each end. This leads to rapid combustion at almost constant volume for any fuel/air equivalence ratio mixture at very high compression ratios. The engine is characterized by high thermal efficiency and low NO.sub.x emissions. The engine is particularly suited for generating electrical current in a hybrid automobile.

  16. Needle Federated Search Engine

    Energy Science and Technology Software Center

    2009-12-01

    The Idaho National Laboratory (INL) has combined a number of technologies, tools, and resources to accomplish a new means of federating search results. The resulting product is a search engine called Needle, an open-source-based tool that the INL uses internally for researching across a wide variety of information repositories. Needle has a flexible search interface that allows end users to point at any available data source. A user can select multiple sources such as commercialmore » databases (Web of Science, Engineering Index), external resources (WorldCat, Google Scholar), and internal corporate resources (email, document management system, library collections) in a single interface with one search query. In the future, INL hopes to offer this open-source engine to the public. This session will outline the development processes for making Needle™s search interface and simplifying the federation of internal and external data sources.« less

  17. Harmonic uniflow engine

    DOEpatents

    Bennett, Charles L.

    2016-03-22

    A reciprocating-piston uniflow engine includes a harmonic oscillator inlet valve capable of oscillating at a resonant frequency for controlling the flow of working fluid into the engine. In particular, the inlet valve includes an inlet valve head and a spring arranged together as a harmonic oscillator so that the inlet valve head is moveable from an unbiased equilibrium position to a biased closed position occluding an inlet. When released, the inlet valve head undergoes a single oscillation past the equilibrium position to a maximum open position and returns to a biased return position close to the closed position to choke the flow and produce a pressure drop across the inlet valve causing the inlet valve to close. In other embodiments, the harmonic oscillator arrangement of the inlet valve enables the uniflow engine to be reversibly operated as a uniflow compressor.

  18. E-Alerts: Combustion, engines, and propellants (reciprocation and rotating combustion engines). E-mail newsletter

    SciTech Connect

    1999-04-01

    Design, performance, and testing of reciprocating and rotating engines of various configurations for all types of propulsion. Includes internal and external combustion engines; engine exhaust systems; engine air systems components; engine structures; stirling and diesel engines.

  19. Career Map: Design Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Design Engineer Career Map: Design Engineer A product designer watches as several engineers work on a wind turbine component. Design Engineer Position Title Design Engineer Alternate Title(s) Materials Engineer, Composite Engineer, Product Designer, Structural Engineer Education & Training Level Bachelor's degree required, graduate degree preferred Education & Training Level Description Design engineers typically hold a bachelor's degree or higher in electrical or mechanical engineering

  20. Rotary internal combustion engine

    SciTech Connect

    Murray, J.L.

    1993-07-20

    A multi bank power plant is described comprising at least a first and a second rotary internal combustion engine connectable together in series, each of the engines comprising: a housing; a cam track internally disposed within the housing and adapted to receive a cam follower; an engine block disposed within the housing and rotatable about a central axis; an output shaft extending axially from each the engine block, each output shaft being coaxial with the other; means for coupling the output shafts together so that the output shafts rotate together in the same direction at the same speed; at least one radially arranged cylinder assembly on each block, each cylinder assembly including a cylinder having a longitudinal axis extending generally radially outwardly from the rotational axis of the block, the cylinder including means defining an end wall, a piston member disposed within the cylinder and adapted to reciprocate within the cylinder; a combustion chamber, means permitting periodic introduction of air and fuel into the combustion chamber, means for causing combustion of a compressed mixture of air and fuel within the combustion chamber, means permitting periodic exhaust of products of combustion of air and fuel from the combustion chamber, and means for imparting forces and motions of the piston within the cylinder to and from the cam track, the means comprising a cam follower operatively connected to the piston; wherein the cam track includes at least a first segment and at least a second segment thereof, the first segment having a generally positive slope wherein the segment has a generally increasing radial distance from the rotational axis of the engine block whereby as a piston moves outwardly in a cylinder on a power stroke while the cam follower is in radial register with the cam track segment, the reactive force of the respective cam follower against the cam track segment acts in a direction tending to impart rotation to the engine block.

  1. Rotary engine research

    SciTech Connect

    Not Available

    1992-06-01

    A development history is presented for NASA's 1983-1991 Rotary Engine Enablement Program, emphasizing the CFD approaches to various problems that were instituted from 1987 to the end of the program. In phase I, a test rig was built to intensively clarify and characterize the stratified-charge rotary engine concept. In phase II, a high pressure, electronically controlled fuel injection system was tested. In phase III, the testing of improved fuel injectors led to the achievement of the stipulated 5 hp/cu inch specific power goal. CFD-aided design of advanced rotor-pocket shapes led to additional performance improvements.

  2. Starting of turbine engines

    SciTech Connect

    Shekleton, J.R.

    1990-05-01

    This patent describes a relatively small turbine engine. It comprises: a rotary turbine wheel; a rotary compressor coupled to the turbine wheel; an annular combustor for receiving air from the compressor and fuel from a fuel source combusting the same and providing gases of combustion to the turbine wheel to drive the same; substantially identical main fuel injectors including fuel injecting nozzles angularly spaced about the compressor; fuel and air from the compressor being introduced into the combustor generally in the tangential direction; a fuel pump; a control schedule valve; and first and second main fuel solenoid valves. The first valve being operable to connect a minority of the injectors to the control schedule valve and the fuel pump for starting the engine, there being an even number of the injectors and the minority of injectors consisting of two diametrically opposite injectors; the first and second valves being operable to connect all of the injectors to the control schedule valve and the pump for causing normal operation of the engine; the engine further being characterized by the absence of start fuel injectors for the combustor.

  3. Rotary internal combustion engine

    SciTech Connect

    Le, L.K.

    1990-11-20

    This patent describes an internal combustion engine comprising; a rotary compressor mechanism; a rotary expander mechanism; and combustion chamber means disposed between the compressor mechanism and the expander mechanism, whereby compressed air is delivered to the combustion chamber through the compressor discharge port, and pressurized gas is delivered from the combustion chamber into the expander mechanism through the pressurized gas intake port.

  4. Engineering Annual Summary 1996

    SciTech Connect

    Dimolitsas, S.

    1997-04-30

    Fiscal year 1996 has been a year of significant change for the Lawrence Livermore National Laboratory (LLNL) in general and for Engineering in particular. Among these changes, the Laboratory`s national security mission was better defined, the stockpile stewardship program objectives became crisper, LLNL`s investment in high-performance computing was re-emphasized with the procurement of a $100 million supercomputer for the Laboratory`s Accelerated Strategic Computing Initiative (ASCI) program, two major Laser programs (the National Ignition Facility and Atomic Vapor Laser Isotope Separation) expanded significantly, and DOE`s human genome efforts moved to the next phase of development. In the area of business operations, LLNL`s Cost Cutting Initiative Program (CCIP) was completed and the Laboratory restructured its workforce using a Voluntary Separation Incentive Program (VSIP). Engineering similarly also saw many technical and programmatic successes, as well as changes, starting with completion of its strategic plan, significant consolidation of its facilities, restructuring of its workforce, reduction of its overhead costs, substantial transfers of staff between programs, and finally my personal arrival at Livermore. This report is the first opportunity to capture some of Engineering`s FY96 activities and accomplishments in a succinct fashion, and to relate these to our strategic plan.

  5. Internal combustion engine

    SciTech Connect

    Perrin, G.; Bergmann, H.

    1984-06-12

    An externally auto-ignited four-stroke internal combustion engine which includes a combustion chamber disposed in an upper surface of a piston such that, in an upper dead-center position of the piston, the combustion chamber receives almost all of the fuel-air mixture. The combustion chamber includes a planar bottom portion and has a cross-sectional shape of a truncated cone expanding in a direction of the cylinder head. The internal combustion engine also includes a recess or depression provided in the cylinder head and disposed eccentrically with respect to a longitudinal center axis of the cylinder. The depression or recess in the cylinder head has the shape of a truncated cone expanding in a direction of the piston, with a spark plug projecting or penetrating into the recess or depression in the cylinder head. In order to enable the achievement of good combustion, increased overall engine performance, and the minimum amount of harmful components in the exhaust gases from the engine when different types of fuel are used, predetermined constructional parameters are selected with respect to the combustion chamber and recess or depression disposed above the combustion chamber as well as the disposition of the combustion chamber with respect to a longitudinal center axis of the cylinder.

  6. Thermoacoustic engines and refrigerators

    SciTech Connect

    Swift, G.W.

    1995-07-01

    We ordinarily think of a sound wave in a gas as consisting of coupled pressure and displacement oscillations. However, temperature oscillations always accompany the pressure changes. The combination of all these oscillations, and their interaction with solid boundaries, produces a rich variety of `thermoacoustic` effects. Although these effects as they occur in every-day life are too small to be noticed, one can harness extremely loud sound waves in acoustically sealed chambers to produce powerful heat engines, heat pumps and refrigerators. Whereas typical engines and refrigerators have crankshaft-coupled pistons or rotating turbines, thermoacoustic engines and refrigerators have at most a single flexing moving part (as in a loudspeaker) with no sliding seals. Thermoacoustic devices may be of practical use where simplicity, reliability or low cost is more important than the highest efficiency (although one cannot say much more about their cost-competitiveness at this early stage). This paper discusses the fundamentals of thermoacoustic engines and refrigerators, research in this field, and their commercial development. 16 refs., 5 figs.

  7. Diesel Engine Idling Test

    SciTech Connect

    Larry Zirker; James Francfort; Jordon Fielding

    2006-02-01

    In support of the Department of Energy’s FreedomCAR and Vehicle Technology Program Office goal to minimize diesel engine idling and reduce the consumption of millions of gallons of diesel fuel consumed during heavy vehicle idling periods, the Idaho National Laboratory (INL) conducted tests to characterize diesel engine wear rates caused by extended periods of idling. INL idled two fleet buses equipped with Detroit Diesel Series 50 engines, each for 1,000 hours. Engine wear metals were characterized from weekly oil analysis samples and destructive filter analyses. Full-flow and the bypass filter cartridges were removed at four stages of the testing and sent to an oil analysis laboratory for destructive analysis to ascertain the metals captured in the filters and to establish wear rate trends. Weekly samples were sent to two independent oil analysis laboratories. Concurrent with the filter analysis, a comprehensive array of other laboratory tests ascertained the condition of the oil, wear particle types, and ferrous particles. Extensive ferrogram testing physically showed the concentration of iron particles and associated debris in the oil. The tests results did not show the dramatic results anticipated but did show wear trends. New West Technologies, LLC, a DOE support company, supplied technical support and data analysis throughout the idle test.

  8. Rotary engine cooling system

    SciTech Connect

    Jones, C.

    1988-07-26

    A rotary internal combustion engine is described comprising: a rotor housing forming a trochoidal cavity therein; an insert of refractory material received in the recess, an element of a fuel injection and ignition system extending through the housing and insert bores, and the housing having cooling passages extending therethrough. The cooling passages are comprised of drilled holes.

  9. Clinton Engineer Works map | Y-12 National Security Complex

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Clinton Engineer Works map Clinton Engineer Works map

  10. Supervisory Interdisciplinary Civil Engineer/Electrical Engineer (0810/0850)

    Energy.gov [DOE]

    THIS IS AN INTERDISCIPLINARY POSITION AND MAY BE FILLED WITH ANY OF THE FOLLOWING OCCUPATIONS: Supervisory Civil Engineer, GS-0810-15 Supervisory Electrical Engineer, GS-0850-15 This position is...

  11. Automotive Stirling Engine Development Program Mod I Stirling engine development

    SciTech Connect

    Simetkosky, M.A.

    1983-08-01

    The Automotive Stirling Engine (ASE) Development Program was established to enable research and development of alternate propulsion systems. The program was awarded to Mechanical Technology Incorporated (MTI) for the purpose of developing an automotive Stirling engine, and transferring Stirling-engine technology to the United States. MTI has fabricated and tested four Mod I engines that have accumulated over 1900 test hours to date. The engines evaluated in the test cell have achieved an average of 34.5% efficiency at their maximum efficiency point (2000 rpm), and have developed an average maximum output power (power available to the drive train) level of 54.4 kW (73.2 bhp). All engines are still operating, and are being used to develop components and control strategy for the Upgraded Mod I engine design (predicted to increase maximum power output and efficiency while reducing total engine system weight).

  12. New Technologies for Repairing Aging Cables in Nuclear Power Plants

    SciTech Connect

    Simmons, Kevin L. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Fifield, Leonard S. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Westman, Matthew P. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2013-09-11

    The goal of this project is to demonstrate a proof-of-concept for a technique to repair aging cables that have been subjected to degradation associated with long-term thermal and radiation exposure in nuclear power plants. The physical degradation of the aging cables manifests itself primarily as cracking and increased brittleness of the polymeric electrical insulation. Therefore, the proposed cable-repair concept comprises development of techniques to impart a softening agent within the deteriorated polymer insulation jacket so as to regain the ability of the insulation to stretch without failing and possibly to heal existing cracks in the insulation. Our approach is to use commercially available ethylene-propylene rubber (EPR) as the relevant test material, demonstrate the adsorption of chemical treatments in the EPR and quantify changes in resulting physical and mechanical properties. EPR cable samples have been thermally treated in air to produce specimens corresponding to the full range of cable age-performance points from new (>350% elongation at break) to end-of-life (<50% elongation at break). The current focus is on two chemical treatments selected as candidates for restoring age-related cable elasticity loss: a rubber plasticizer and a reactive silane molecule. EPR specimens of 200, 150, 100, and 50% elongation at break have been soaked in the candidate chemical treatments and the kinetics of chemical uptake, measured by change in mass of the samples, has been determined. Mechanical properties as a function of aging and chemical treatment have been measured including ultimate tensile strength, tensile modulus at 50% strain, elongation at break, and storage modulus. Dimensional changes with treatment and changes in glass transition temperature were also investigated. These ongoing experiments are expected to provide insight into the physical-chemical nature of the effect of thermal degradation on EPR rejuvenation limits and to advance novel methods for

  13. Injection repair of carbon fiber/bismaleimide composite panels with bisphenol E cyanate ester resin

    SciTech Connect

    Thunga, Mahendra; Bauer, Amy; Obusek, Kristine; Meilunas, Ray; Akinc, Mufit; Kessler, Michael R

    2014-08-01

    Resin injection of bisphenol E cyanate ester, a low viscosity resin that cures into a high temperature thermoset polymer, is investigated as a reliable repair method to restore strength and stiffness in delaminated carbon fiber/bismaleimide composites used in aircraft panels. The influence of temperature on the viscosity of the uncured resin was measured to optimize the injection conditions for high resin infiltration into the delaminations. The repair efficiency of the resin was evaluated by varying the panel thickness and the method by which the delamination damage was created in the composite specimens. Ultrasonic scanning (C-scan), flash thermography images, and cross-section analysis of repaired panels revealed excellent resin infiltration into the damaged region. Evaluation of mechanical repair efficiency using both bending stiffness and in-plain compressive strength of the composite panels as the repair metrics showed values exceeding 100%.

  14. Career Map: Aerospace Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Aerospace Engineer Career Map: Aerospace Engineer An aerospace engineer stands in front of a drivetrain testing machine. Aerospace Engineer Position Title Aerospace Engineer Alternate Title(s) Aeronautical Engineer Education & Training Level Advanced, Bachelor's required, prefer graduate degree Education & Training Level Description Aerospace engineers must have a bachelor's degree in aerospace engineering or another field of engineering or science related to aerospace systems. Brief job

  15. Career Map: Project Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Project Engineer Career Map: Project Engineer project_engineer.jpg Project Engineer Position Title Project Engineer Alternate Title(s) Construction Engineer, Project Development Engineer Education & Training Level Advanced, Bachelors required Education & Training Level Description Project engineers usually have a bachelor's degree in mechanical, aerospace or electrical engineering. They may also have a degree in other technical disciplines or construction management. Employers also value

  16. Method of tissue repair using a composite material

    DOEpatents

    Hutchens, Stacy A.; Woodward, Jonathan; Evans, Barbara R.; O'Neill, Hugh M.

    2016-03-01

    A composite biocompatible hydrogel material includes a porous polymer matrix, the polymer matrix including a plurality of pores and providing a Young's modulus of at least 10 GPa. A calcium comprising salt is disposed in at least some of the pores. The porous polymer matrix can comprise cellulose, including bacterial cellulose. The composite can be used as a bone graft material. A method of tissue repair within the body of animals includes the steps of providing a composite biocompatible hydrogel material including a porous polymer matrix, the polymer matrix including a plurality of pores and providing a Young's modulus of at least 10 GPa, and inserting the hydrogel material into cartilage or bone tissue of an animal, wherein the hydrogel material supports cell colonization in vitro for autologous cell seeding.

  17. Method of tissue repair using a composite material

    DOEpatents

    Hutchens, Stacy A; Woodward, Jonathan; Evans, Barbara R; O'Neill, Hugh M

    2014-03-18

    A composite biocompatible hydrogel material includes a porous polymer matrix, the polymer matrix including a plurality of pores and providing a Young's modulus of at least 10 GPa. A calcium comprising salt is disposed in at least some of the pores. The porous polymer matrix can comprise cellulose, including bacterial cellulose. The composite can be used as a bone graft material. A method of tissue repair within the body of animals includes the steps of providing a composite biocompatible hydrogel material including a porous polymer matrix, the polymer matrix including a plurality of pores and providing a Young's modulus of at least 10 GPa, and inserting the hydrogel material into cartilage or bone tissue of an animal, wherein the hydrogel material supports cell colonization in vitro for autologous cell seeding.

  18. Composite vascular repair grafts via micro-imprinting and electrospinning

    SciTech Connect

    Liu, Yuanyuan Hu, Qingxi; Xiang, Ke Chen, Haiping Li, Yu

    2015-04-15

    Composite vascular grafts formed by micro-imprinting and electrospinning exhibited improved mechanical properties relative to those formed by electrospinning alone. The three-layered composite grafts mimic the three-layered structure of natural blood vessels. The middle layer is made by micro-imprinting poly-p-dioxanone (PPDO), while the inner and outer layers are electrospun mixtures of chitosan and polyvinyl alcohol. The graft morphology is characterized with scanning electron microscopy. For constant graft thicknesses, the PPDO increases the mechanical strength. Cells cultivated on the vascular grafts adhere and proliferate better because of the natural, biological chitosan in the inner and outer layers. Overall, the composite scaffolds could be good candidates for blood vessel repair.

  19. DNA repair in spermatocytes and spermatids of the mouse

    SciTech Connect

    Sega, G.A.

    1982-01-01

    When male mice are exposed to chemical agents that reach the germ cells several outcomes are possible in terms of the germ cell unscheduled DNA synthesis (UDS) response and removal of DNA adducts. It is possible that: the chemical binds to the DNA and induces a UDS response with concomittant removal of DNA adducts; the chemical binds to the DNA but no UDS response is induced; or the chemical does not bind to DNA and no UDS is induced. Many mutagens have been shown to induce a UDS response in postgonial germ cell stages of the male mouse up through midspermatids, but the relationship between this UDS and the repair of genetic damage within the germ cells is still unknown. While some mutagens appear to have an effect only in germ-cell stages where no UDS occurs, others are able to induce genetic damage in stages where UDS has been induced.

  20. Manual of bearing failures and repair in power plant rotating equipment

    SciTech Connect

    Pinkus, O. )

    1991-07-01

    Turbine bearing failures in electric utilities have been responsible for outages amounting to 1.1 to 1.8% of theoretical power output. In addition to bearing failures in the turbo-generators, failures occur in other rotating equipment, such as pumps, fans, and auxiliary gas turbines. Knowledge of bearing failure mechanisms and causes permits the introduction of safeguards to prevent their occurrence. The Electric Power Research Institute (EPRI) has commissioned Mechanical Technology Incorporated (MTI) under EPRI contract RP1648-10 to write a bearing failure manual geared directly to bearing problems typical of the rotating equipment in electric utility power plants. The main purpose of the manual is to provide power plant engineering and service personnel with ways to properly identify specific modes of bearing damage, as well as root causes, followed by a list of remedial actions applicable to each specific case. The repair manual is a comprehensive encyclopedia on the subject of bearing failure and cause diagnosis. The manual is organized along the following lines. It first classifies 16 modes of bearing failure that are likely to occur in the rotating equipment of an electric utility. These modes are listed in the bearing failure code tabulation that follows. Each mode of failure is described in the manual regarding its symptoms and characteristics, and each is accompanied by photographs of the damaged surface. The visual aids, together with additional laboratory evidence described in the text, offer the tools for a correct diagnosis of the mode of failure. 105 refs., 222 figs., 18 tabs.

  1. Design, build, develop and test a fieldworthy spiral tool and packer for casing repair

    SciTech Connect

    Koster, C.

    1993-01-01

    A new method for sealing casing is under research and development by Nu-Bore Systems. The method involves internally lining a section of the wellbore with a multi-layer spiral wrapping of a high strength, corrosion resistant metal interleaved with a high bond strength, resilient epoxy. The high strength metal is preferably a copper based alloy hardened to a very high strength in order to resist the internal and external pressures of downhole environments. The epoxy adhesive formulation is one that forms a bond between the steel inner wall of the casing and copper alloy strip. The copper alloy strip spiral wraps are interleaved with epoxy, and the whole system provides a high level of outward directed spring force and, thus, resists both internal and externally directed forces. In this report, the cost savings to the nation's energy program was estimated to be in the range of hundreds of millions of dollars per year, and the method was judged technically feasible once certain well defined engineering obstacles are Overcome. The objective of this program is to develop a joint between packer segments that is easily assembled before lowering downhole and easily disassembled after the sealing job is done. In addition, this tool joint must expand uniformly as though it were a part of the rubber and must not fail under the relatively high pressure of the epoxy cure cycle. The overall goal of the work was to design, build, develop, and test a spiral tool and packer into a single universal tool that can repair casings with diameters varying from 4.5 to 7 inches.

  2. Electrical Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Electrical Engineer Electrical Engineer Submitted by admin on Mon, 2016-10-31 00:16 Job Summary Organization Name Department Of Energy Agency SubElement Western Area Power ...

  3. Argonne National Laboratory's Omnivorous Engine

    ScienceCinema

    Thomas Wallner

    2010-01-08

    Why can't an engine run on any fuel? Argonne is designing an omnivorous engine that can run on any blend of gasoline, ethanol or butanol?and calibrate itself to burn that fuel most efficiently.

  4. Sandia Engineer at Heliostat Field

    Energy.gov [DOE]

    This photograph features Clifford Ho, an engineer at Sandia National Laboratories, who stands below Sandia's solar heliostat field. The Chinese Institute of Engineers-USA selected Ho as its Asian...

  5. Supercharging system for automotive engines

    SciTech Connect

    Yamada, T.; Yabuhara, H.; Takimoto, F.

    1988-03-15

    A supercharging system for an automotive engine is described comprising: a turbocharger driven by exhaust-gas of the engine; a supercharger; an intake passage connecting the turbocharger and the supercharger in series, for supplying air to the engine; driving means for driving the supercharger by the engine; clutch means provided in the driving means; a first bypass provided around the supercharger; a control valve provided in the first bypass; a second bypass provided around the turbine of the turbocharger; a waste gate valve provided in the second bypass; a first actuator for operating the control valve; a second actuator for operating the waste gate valve; first means for operating the second actuator to open the waste gate valve when supercharging pressure exceeds a predetermined value; an engine speed sensor for detecting speed of the engine; an engine load sensor for detecting load on the engine; and a control unit.

  6. Free-piston Stirling engine

    SciTech Connect

    Berggren, R.W.; Moynihan, T.M.

    1982-09-01

    A free-piston Stirling engine/linear alternator system (FPSE-010-3), developed under previous Department of Energy (DOE) funding, has been used as a test bed for evaluating selected Stirling engine loss mechanisms. The engine is particularly suited to test-bed operation because engine performance can be evaluated over a wide range of operating conditions; system instrumentation is capable of measuring the effects of system component changes; and modular engine design facilitates the evaluation of alternate component configurations. Extensive testing was performed to establish the operating characteristics of a base-line engine configuration and to characterize specific losses within a Stirling engine. Significant variations in engine performance were observed as the displacer seal clearance was varied. This paper presents selected results from the base-line and displacer seal clearance tests.

  7. Argonne National Laboratory's Omnivorous Engine

    SciTech Connect

    Thomas Wallner

    2009-10-16

    Why can't an engine run on any fuel? Argonne is designing an omnivorous engine that can run on any blend of gasoline, ethanol or butanoland calibrate itself to burn that fuel most efficiently.

  8. engineering | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Engineer develops 'leap forward' with 3D-printer Lawrence Livermore Laboratory engineer Bryan Moran won an award last month for his 3D printing innovation. It could revolutionize ...

  9. Understanding Stirling engines. Technical paper

    SciTech Connect

    Beale, W.

    1984-01-01

    The paper describes the basic Stirling engine, as well as some of the most promising modern varieties. The intent is to familiarize people in developing countries with the engine's operation and range of applications.

  10. Atlanta Chemical Engineering LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Atlanta Chemical Engineering LLC Jump to: navigation, search Logo: Atlanta Chemical Engineering LLC Name: Atlanta Chemical Engineering LLC Place: Marietta, Georgia Country: United...

  11. Sandian Selected for Outstanding Engineer Award

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Sandian Selected for Outstanding Engineer Award The Institute of Electrical and ... Jose Luis' broad background in mechanical engineering, physics, and electrical engineering ...

  12. BGA Engineering LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search Name: BGA Engineering LLC Place: Glen Rock, New Jersey Zip: 7452 Sector: Solar Product: Engineering firm specialising in substation engineering and design, power plant...

  13. Tasco Engineering Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Tasco Engineering Inc Jump to: navigation, search Name: Tasco Engineering Inc Place: Lehi, Utah Zip: 84043 Sector: Hydro, Solar, Wind energy Product: Power engineering firm with...

  14. Calypso Engineering Srl | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Calypso Engineering Srl Jump to: navigation, search Name: Calypso Engineering Srl Place: Albino, Italy Sector: Services, Wind energy Product: Develops and provides engineering...

  15. Cleaning Up Diesel Engines | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Diesel Engines Cleaning Up Diesel Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters PDF icon 2005deerwitherspoon.pdf More Documents & ...

  16. Vehicle Technologies Office: 2014 Advanced Combustion Engine...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    2014 Advanced Combustion Engine Annual Progress Report Vehicle Technologies Office: 2014 Advanced Combustion Engine Annual Progress Report The Advanced Combustion Engine research...

  17. Mechanical Engineer | Princeton Plasma Physics Lab

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineer Department: Engineering Supervisor(s): Bill Blanchard Staff: EM 3 Requisition Number: 1500 The Mechanical Design Engineer will develop, design, manufacture, and test ...

  18. Instrumentation & Controls Electrical Engineer | Princeton Plasma...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Instrumentation & Controls Electrical Engineer Department: Engineering Supervisor(s): Tim ... Perform role of COG engineer in PMO system to perform project management jobs. Generates ...

  19. Hydrogen Engine Center HEC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Engine Center HEC Jump to: navigation, search Name: Hydrogen Engine Center (HEC) Place: Algona, Iowa Zip: IA 50511 Sector: Hydro, Hydrogen Product: The Hydrogen Engine Center (HEC)...

  20. Nuclear Science and Engineering Education Sourcebook | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Science and Engineering Education Sourcebook Nuclear Science and Engineering Education Sourcebook The Nuclear Science and Engineering Education Sourcebook is a repository of ...

  1. Construction of nerve guide conduits from cellulose/soy protein composite membranes combined with Schwann cells and pyrroloquinoline quinone for the repair of peripheral nerve defect

    SciTech Connect

    Luo, Lihua; Gan, Li; Liu, Yongming; Tian, Weiqun; Tong, Zan; Wang, Xiong; Huselstein, Celine; Chen, Yun

    2015-02-20

    conduits in the field of nerve tissue engineering. - Highlights: • A novel nerve conduit was constructed and applied to repair nerve defect in rats. • Transparent hollow cellulose/soy protein isolate tube was used as conduit matrix. • Pyrroloquinoline quinine was adsorbed into the hollow tube as nerve growth factor. • Schwann cells were cultured into the hollow tube as seed cells. • The new nerve conduit could repair and reconstruct the peripheral nerve defects.

  2. Cleaner, More Efficient Diesel Engines

    SciTech Connect

    Musculus, Mark

    2013-08-13

    Mark Musculus, an engine combustion scientist at Sandia National Laboratories, led a study that outlines the science base for auto and engine manufacturers to build the next generation of cleaner, more efficient engines using low-temperature combustion. Here, Musculus discusses the work at Sandia's Combustion Research Facility.

  3. Cleaner, More Efficient Diesel Engines

    ScienceCinema

    Musculus, Mark

    2014-02-26

    Mark Musculus, an engine combustion scientist at Sandia National Laboratories, led a study that outlines the science base for auto and engine manufacturers to build the next generation of cleaner, more efficient engines using low-temperature combustion. Here, Musculus discusses the work at Sandia's Combustion Research Facility.

  4. Internal combustion engine

    DOEpatents

    Baker, Quentin A.; Mecredy, Henry E.; O'Neal, Glenn B.

    1991-01-01

    An improved engine is provided that more efficiently consumes difficult fuels such as coal slurries or powdered coal. The engine includes a precombustion chamber having a portion thereof formed by an ignition plug. The precombustion chamber is arranged so that when the piston is proximate the head, the precombustion chamber is sealed from the main cylinder or the main combustion chamber and when the piston is remote from the head, the precombustion chamber and main combustion chamber are in communication. The time for burning of fuel in the precombustion chamber can be regulated by the distance required to move the piston from the top dead center position to the position wherein the precombustion chamber and main combustion chamber are in communication.

  5. Advanced engineering analysis

    SciTech Connect

    Freeman, W.R.

    1992-11-01

    The Advanced Engineering Analysis project is being used to improve the breadth of engineering analysis types, the particular phenomena which may be simulated, and also increase the accuracy and usability of the results of both new and current types of simulations and analyses. This is an interim report covering several topics under this project. Information on two new implementations of failure criteria for metal forming, the implementation of coupled fluid flow/heat transfer analysis capabilities, the integration of experimental shock and vibration test data with analyses, a correction to a contact solution problem with a 3-D parabolic brick finite element, and the development and implementation of a file translator to link IDEAS to DYNA3D is provided in this report.

  6. Electrochemical heat engine

    DOEpatents

    Elliott, Guy R. B.; Holley, Charles E.; Houseman, Barton L.; Sibbitt, Jr., Wilmer L.

    1978-01-01

    Electrochemical heat engines produce electrochemical work, and mechanical motion is limited to valve and switching actions as the heat-to-work cycles are performed. The electrochemical cells of said heat engines use molten or solid electrolytes at high temperatures. One or more reactions in the cycle will generate a gas at high temperature which can be condensed at a lower temperature with later return of the condensate to electrochemical cells. Sodium, potassium, and cesium are used as the working gases for high temperature cells (above 600 K) with halogen gases or volatile halides being used at lower temperature. Carbonates and halides are used as molten electrolytes and the solid electrolyte in these melts can also be used as a cell separator.

  7. Photonically engineered incandescent emitter

    DOEpatents

    Gee, James M.; Lin, Shawn-Yu; Fleming, James G.; Moreno, James B.

    2003-08-26

    A photonically engineered incandescence is disclosed. The emitter materials and photonic crystal structure can be chosen to modify or suppress thermal radiation above a cutoff wavelength, causing the emitter to selectively emit in the visible and near-infrared portions of the spectrum. An efficient incandescent lamp is enabled thereby. A method for fabricating a three-dimensional photonic crystal of a structural material, suitable for the incandescent emitter, is also disclosed.

  8. Science, Technology, and Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    PADSTE Science, Technology, and Engineering Delivering mission success and innovative solutions to national security problems through the agile, rapid application of our transformational scientific capabilities Mars rover laswer targets rocks all by itself Mars rover targets rocks all by itself READ MORE New insights into "plant memories" New insights into "plant memories" READ MORE Deep moonquakes reveal thickness of the lunar crust Deep moonquakes reveal thickness of the

  9. The ESnet Engineering Team

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Fasterdata IPv6 Network Network Performance Tools The ESnet Engineering Team Network R&D Software-Defined Networking (SDN) Experimental Network Testbeds Performance (perfSONAR) Software & Tools Development Data for Researchers Partnerships Publications Workshops Science Engagement Move your data Programs & Workshops Science Requirements Reviews Case Studies News & Publications ESnet News Publications and Presentations Galleries ESnet Awards and Honors Blog ESnet Live Home »

  10. Stirling cycle engine

    DOEpatents

    Lundholm, Gunnar

    1983-01-01

    In a Stirling cycle engine having a plurality of working gas charges separated by pistons reciprocating in cylinders, the total gas content is minimized and the mean pressure equalization among the serial cylinders is improved by using two piston rings axially spaced at least as much as the piston stroke and by providing a duct in the cylinder wall opening in the space between the two piston rings and leading to a source of minimum or maximum working gas pressure.

  11. Photonically Engineered Incandescent Emitter

    DOEpatents

    Gee, James M.; Lin, Shawn-Yu; Fleming, James G.; Moreno, James B.

    2005-03-22

    A photonically engineered incandescence is disclosed. The emitter materials and photonic crystal structure can be chosen to modify or suppress thermal radiation above a cutoff wavelength, causing the emitter to selectively emit in the visible and near-infrared portions of the spectrum. An efficient incandescent lamp is enabled thereby. A method for fabricating a three-dimensional photonic crystal of a structural material, suitable for the incandescent emitter, is also disclosed.

  12. Ram jet engine

    SciTech Connect

    Crispin, B.; Pohl, W.D.; Thomaier, D.; Voss, N.

    1983-11-29

    In a ram jet engine, a tubular combustion chamber is divided into a flame chamber followed by a mixing chamber. The ram air is supplied through intake diffusers located on the exterior of the combustion chamber. The intake diffusers supply combustion air directly into the flame chamber and secondary air is conveyed along the exterior of the combustion chambers and then supplied directly into the mixing chamber.

  13. Modular Aneutronic Fusion Engine

    SciTech Connect

    Gary Pajer, Yosef Razin, Michael Paluszek, A.H. Glasser and Samuel Cohen

    2012-05-11

    NASA's JUNO mission will arrive at Jupiter in July 2016, after nearly five years in space. Since operational costs tend to rise with mission time, minimizing such times becomes a top priority. We present the conceptual design for a 10MW aneutronic fusion engine with high exhaust velocities that would reduce transit time for a Jupiter mission to eighteen months and enable more challenging exploration missions in the solar system and beyond. __________________________________________________

  14. Stirling cycle engine

    SciTech Connect

    Lundholm, G.

    1983-11-29

    In a Stirling cycle engine having a plurality of working gas charges separated by pistons reciprocating in cylinders, the total gas content is minimized and the mean pressure equalization among the serial cylinders is improved by using two piston rings axially spaced at least as much as the piston stroke and by providing a duct in the cylinder wall opening in the space between the two piston rings and leading to a source of minimum or maximum working gas pressure. 1 fig.

  15. MARS Flight Engineering Status

    SciTech Connect

    Fast, James E.; Dorow, Kevin E.; Morris, Scott J.; Thompson, Robert C.; Willett, Jesse A.

    2010-04-06

    The Multi-sensor Airborne Radiation Survey Flight Engineering project (MARS FE) has designed a high purity germanium (HPGe) crystal array for conducting a wide range of field measurements. In addition to the HPGe detector system, a platform-specific shock and vibration isolation system and environmental housing have been designed to support demonstration activities in a maritime environment on an Unmanned Surface Vehicle (USV). This report describes the status of the equipment as of the end of FY09.

  16. Multicylinder compound engine

    SciTech Connect

    Paul, M.A.; Paul, A.

    1990-10-23

    This patent describes a compound, rotary-reciprocal engine. It comprises: a two-cycle reciprocator having cylinders, each cylinder having at least one piston arranged for reciprocation in the cylinder in a cycled operation with a timed air input to the cylinder and a timed exhaust from the cylinder; a compressed air intake and combustion gas exit in each cylinder of the reciprocator; fuel injection means for injecting fuel into the cylinders at appropriate times in the cycled operation; and, a rotocharger.

  17. Evangelos Chaniotakis, Network Engineer

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Evangelos Chaniotakis About ESnet Our Mission The Network ESnet History Governance & Policies Career Opportunities ESnet Staff & Org Chart ESnet Leadership Administration Advanced Network Technologies Cybersecurity Infrastructure, Identity & Collaboration Network Engineering Network Planning Operational Enhancements Office of the CTO Science Engagement Tools Team Contact Us Contact Us Technical Assistance: 1 800-33-ESnet (Inside US) 1 800-333-7638 (Inside US) 1 510-486-7600

  18. Nuclear Safety Enforcement Documents | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Idaho Technologies Company related to Unplanned Internal Radiation Exposures at the Chemical Processing Plant at the Idaho National Engineering and Environmental Laboratory,...

  19. Preliminary Notice of Violation, Lockheed Martin Idaho Technologies...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Idaho Technologies Company related to Unplanned Internal Radiation Exposures at the Chemical Processing Plant at the Idaho National Engineering and Environmental Laboratory,...

  20. Effect of multiple repairs in girth welds of pipelines on the mechanical properties

    SciTech Connect

    Vega, O.E.; Hallen, J.M.; Villagomez, A.

    2008-10-15

    This work presents the results of multiple weld repairs in the same area in seamless API X-52 microalloyed steel pipe. Four conditions of shielded metal arc welding repairs and one as-welded specimen of the girth weld were characterized to determine changes in the microstructure, grain size in the heat affected zone, and to evaluate their effect on the mechanical properties of the weld joints. The mechanical properties by means of tension tests, Charpy-V impact resistance and Vickers hardness of the welds were analyzed. The results indicate that significant changes are not generated in the microstructural constituents of the heat affected zone. Grain growth in the heat affected zone at the specimen mid-thickness with the number of repairs was observed. Tensile strength of the weld joints meets the requirement of the API 1104 standard even after the fourth weld repair. Significant reduction in Charpy-V impact resistance with the number of weld repairs was found when the notch location was in the intersection of the fusion line with the specimen mid-thickness. A significant increase in the Vickers hardness of the heat affected zone occurred after the first repair and a gradual decrease in the Vickers hardness occurred as the number of repairs increases.

  1. DNA repair of a single UV photoproduct in a designed nucleosome

    SciTech Connect

    Kosmoskil, Joseph V.; Ackerman, Eric J. ); Smerdon, Michael J.

    2001-08-28

    Eukaryotic DNA repair enzymes must interact with the architectural hierarchy of chromatin. The challenge of finding damaged DNA complexed with histone proteins in nucleosomes is complicated by the need to maintain local chromatin structures involved in regulating other DNA processing events. The heterogeneity of lesions induced by DNA-damaging agents has led us to design homogeneously damaged substrates to directly compare repair of naked DNA with that of nucleosomes. Here we report that nucleotide excision repair in Xenopus nuclear extracts can effectively repair a single UV radiation photoproduct located 5 bases from the dyad center of a positioned nucleosome, although the nucleosome is repaired at about half the rate at which the naked DNA fragment is. Extract repair within the nucleosome is > 50-fold more rapid than either enzymatic photoreversal or endonuclease cleavage of the lesion in vitro. Furthermore, nucleosome formation occurs (after repair) only on damaged naked DNA ( 165-bp fragments) during a 1-h incubation in these extracts, even in the presence of a large excess of undamaged DNA. This is an example of selective nucleosome assembly by Xenopus nuclear extracts on a short linear DNA fragment containing a DNA lesion.

  2. CDK1 enhances mitochondrial bioenergetics for radiation-induced DNA repair

    DOE PAGES [OSTI]

    Qin, Lili; Fan, Ming; Candas, Demet; Jiang, Guochun; Papadopoulos, Stelios; Tian, Lin; Woloschak, Gayle; Grdina, David J.; Li, Jian  Jian

    2015-12-06

    Nuclear DNA repair capacity is a critical determinant of cell fate under genotoxic stress conditions. DNA repair is a well-defined energy-consuming process. However, it is unclear how DNA repair is fueled and whether mitochondrial energy production contributes to nuclear DNA repair. Here, we report a dynamic enhancement of oxygen consumption and mitochondrial ATP generation in irradiated normal cells, paralleled with increased mitochondrial relocation of the cell-cycle kinase CDK1 and nuclear DNA repair. The basal and radiation-induced mitochondrial ATP generation is reduced significantly in cells harboring CDK1 phosphorylation-deficient mutant complex I subunits. Similarly, mitochondrial ATP generation and nuclear DNA repair aremore »also compromised severely in cells harboring mitochondrially targeted, kinase-deficient CDK1. These findings demonstrate a mechanism governing the communication between mitochondria and the nucleus by which CDK1 boosts mitochondrial bioenergetics to meet the increased cellular fuel demand for DNA repair and cell survival under genotoxic stress conditions.« less

  3. Fabrication Flaw Density and Distribution In Repairs to Reactor Pressure Vessel and Piping Welds

    SciTech Connect

    GJ Schuster, FA Simonen, SR Doctor

    2008-04-01

    The Pacific Northwest National Laboratory is developing a generalized fabrication flaw distribution for the population of nuclear reactor pressure vessels and for piping welds in U.S. operating reactors. The purpose of the generalized flaw distribution is to predict component-specific flaw densities. The estimates of fabrication flaws are intended for use in fracture mechanics structural integrity assessments. Structural integrity assessments, such as estimating the frequency of loss-of-coolant accidents, are performed by computer codes that require, as input, accurate estimates of flaw densities. Welds from four different reactor pressure vessels and a collection of archived pipes have been studied to develop empirical estimates of fabrication flaw densities. This report describes the fabrication flaw distribution and characterization in the repair weld metal of vessels and piping. This work indicates that large flaws occur in these repairs. These results show that repair flaws are complex in composition and sometimes include cracks on the ends of the repair cavities. Parametric analysis using an exponential fit is performed on the data. The relevance of construction records is established for describing fabrication processes and product forms. An analysis of these records shows there was a significant change in repair frequency over the years when these components were fabricated. A description of repair flaw morphology is provided with a discussion of fracture mechanics significance. Fabrication flaws in repairs are characterized using optimized-access, high-sensitivity nondestructive ultrasonic testing. Flaw characterizations are then validated by other nondestructive evaluation techniques and complemented by destructive testing.

  4. Environmental, safety, and health engineering

    SciTech Connect

    Woodside, G.; Kocurek, D.

    1997-12-31

    A complete guide to environmental, safety, and health engineering, including an overview of EPA and OSHA regulations; principles of environmental engineering, including pollution prevention, waste and wastewater treatment and disposal, environmental statistics, air emissions and abatement engineering, and hazardous waste storage and containment; principles of safety engineering, including safety management, equipment safety, fire and life safety, process and system safety, confined space safety, and construction safety; and principles of industrial hygiene/occupational health engineering including chemical hazard assessment, personal protective equipment, industrial ventilation, ionizing and nonionizing radiation, noise, and ergonomics.

  5. Gaseous-fuel engine technology

    SciTech Connect

    1995-12-31

    This publication contains three distinct groups of papers covering gaseous-fuel injection and control, gaseous-fuel engine projects, and gaseous-fuel engine/vehicle applications. Contents include: ultra rapid natural gas port injection; a CNG specific fuel injector using latching solenoid technology; development of an electronically-controlled natural gas-fueled John Deere PowerTech 8.1L engine; adapting a Geo Metro to run on natural gas using fuel-injection technology; behavior of a closed loop controlled air valve type mixer on a natural gas fueled engine under transient operation; and a turbocharged lean-burn 4.3 liter natural gas engine.

  6. Energy Engineering Analysis Program, Fort Polk, Louisiana. Final executive summary, increment `f`

    SciTech Connect

    1988-06-01

    Executive Order 12003, dated 19 July 1977, initiated the U.S. Army`s energy conservation effort. Specifically, the Executive Order led to the development of the Army Facilities Energy Plan which directs Army Staff and Major Army Commands to develop detailed implementation plans for energy conservation. As a result of these directives, the Fort Worth District of the U.S. Army Corps of Engineers contracted for an Energy Engineering Analysis Program (EEAP) at Fort Polk, Louisiana. The EEAP included Increments `A`, `B`, `E`, and `G`. To accomplish the intent of Increment `P`, namely, providing low cost/no cost energy savings recommendations in the form of specific, practical instructions for use by the Facility Engineer, the following general steps were taken: (1) Consider treasures identified in Detailed Scope of Work. (2) identify other potential Low Cost/No Cost energy Conservation Measures (ECM) through discussions with Fort Polk personnel and field surveys by Graham Associates engineers. (3) Review Increments `A`, `B`, and `G` for ECM`s within the Facility Engineer`s funding authority; $200,000 for alteration projects and $1,000,000 for maintenance and repair type work. (4) Evaluate ECM`s using relevant data for other Increments of the ESAP, and develop new data where appropriate.

  7. Honda motor company's CVCC engine

    SciTech Connect

    Abernathy, W.J.; Ronan, L.

    1980-07-01

    Honda Motor Company of Japan in a four-year period from 1968 to 1872 designed, tested, and mass-produced a stratified charge engine, the CVCC, which in comparison to conventional engines of similar output at the time was lower in CO, HC and NO/sub x/ emissions and higher in fuel economy. Honda developed the CVCC engine without government assistance or outside help. Honda's success came at a time when steadily increasing fuel costs and the various provisions of the Clean Air Act had forced US automakers to consider possible alternatives to the conventional gasoline engine. While most major engine manufacturers had investigated some form of stratified charge engine, Honda's CVCC was the only one to find successful market application. This case study examines the circumstances surrounding the development of the CVCC engine and its introduction into the Japanese and American markets.

  8. Emailed Comments of Elizabeth Chimento RE: Pepco Scheduled Line Repair Dec.

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    1-20, 2006 | Department of Energy Emailed Comments of Elizabeth Chimento RE: Pepco Scheduled Line Repair Dec. 1-20, 2006 Emailed Comments of Elizabeth Chimento RE: Pepco Scheduled Line Repair Dec. 1-20, 2006 Docket No. EO-05-01. Regarding the planned line outage, scheduled for Feb. 20 through Mar. 6, I am requesting that the residents near the plant be moved for the duration of the outage to protect their health. Emailed Comments of Elizabeth Chimento RE: Pepco Scheduled Line Repair Dec.

  9. Sandia Energy - Sandia Cyber Engineering Research Laboratory...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Cyber Engineering Research Laboratory (CERL) Formally Opens Home Infrastructure Security Cyber Infrastructure Assurance Facilities News News & Events Analysis Cyber Engineering...

  10. Optimization of Advanced Diesel Engine Combustion Strategies...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    More Documents & Publications Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel Engine Combustion Strategies Computational Fluid Dynamics ...

  11. Biodiesel Outlook - An Engine Manufacturer's Perspective | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Outlook - An Engine Manufacturer's Perspective Biodiesel Outlook - An Engine ... More Documents & Publications Biodiesel ASTM Update and Future Technical Needs Recent ...

  12. Career Map: Civil Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Civil Engineer Career Map: Civil Engineer A civil engineer wearing a safety vest and hard hat stands in front of a wind turbine. Civil Engineer Position Title Civil Engineer Alternate Title(s) Engineer Education & Training Level Bachelors required, prefer graduate degree Education & Training Level Description Civil engineers need a bachelor's degree. They typically need a graduate degree for promotion to managerial positions. Civil engineers who sell their own services publicly must be

  13. Career Map: Engineering Manager | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engineering Manager Career Map: Engineering Manager Two engineering managers wearing hard hats inspect a wind component. Engineering Manager Position Title Engineering Manager Alternate Title(s) n/a Education & Training Level Bachelor's degree in relevant engineering discipline required Education & Training Level Description Engineering managers typically have at least a bachelor's degree and significant work experience. Brief job description The engineering manager plans, coordinates,

  14. Career Map: Sales Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Sales Engineer Career Map: Sales Engineer Several sales engineers collaborate on a project using a tablet. Sales Engineer Position Title Sales Engineer Alternate Title(s) Technical Sales Engineer, Senior Sales Executive, Vice President of Sales, Key Account Manager Education & Training Level Bachelors required, prefer graduate degree Education & Training Level Description Sales engineers typically need a bachelor's degree in engineering or a related field. Brief job description Sales

  15. Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Turbocharged Direct Injection (GTDI) Engine Development Vehicle Technologies Office Merit Review 2014: Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine ...

  16. Title: Collaborative Industry - Academic Synchrophasor Engineering...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Title: Collaborative Industry - Academic Synchrophasor Engineering Program Principal ... course in the Electrical and Computer Engineering (ECE) department where students will ...

  17. Engineering Molecular Transformations for Sustainable Energy...

    Office of Scientific and Technical Information (OSTI)

    Engineering Molecular Transformations for Sustainable Energy Conversion Citation Details In-Document Search Title: Engineering Molecular Transformations for Sustainable Energy ...

  18. Interdisciplinary General Engineer/Physical Scientist (Facility...

    Office of Environmental Management (EM)

    Interdisciplinary General EngineerPhysical Scientist (Facility Representative) Interdisciplinary General EngineerPhysical Scientist (Facility Representative) Submitted by admin ...

  19. China National Machinery Industry Complete Engineering Corporation...

    OpenEI (Open Energy Information) [EERE & EIA]

    Industry Complete Engineering Corporation CMCEC Jump to: navigation, search Name: China National Machinery Industry Complete Engineering Corporation (CMCEC) Place: Beijing,...

  20. Integrated Computational Materials Engineering (ICME) for Mg...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    More Documents & Publications Integrated Computational Materials Engineering (ICME) for Mg: International Pilot Project Integrated Computational Materials Engineering (ICME) for ...

  1. Thermoacoustic refrigerators and engines comprising cascading...

    Office of Scientific and Technical Information (OSTI)

    Thermoacoustic refrigerators and engines comprising cascading stirling thermodynamic units Title: Thermoacoustic refrigerators and engines comprising cascading stirling ...

  2. A loaded thermoacoustic engine

    SciTech Connect

    Olson, J.R.; Swift, G.W.

    1995-11-01

    Measurements and analysis of the performance of a thermoacoustic engine driving a dissipative load are presented. The effect of the load can be explained qualitatively using a simple low-amplitude approximation and quantitatively by invoking a more accurate low-amplitude numerical solution. The heater power {ital @};DQ and hot-end temperature {ital T}{sub {ital H}} are found to be simple functions of the load impedance and the unloaded values of {ital @};DQ and {ital T}{sub {ital H}}. {copyright} {ital 1995} {ital Acoustical} {ital Society} {ital of} {ital America}.

  3. Stratified cross combustion engine

    SciTech Connect

    Rhoads, J.L.

    1981-06-23

    A piston engine is provided in which adjacent cylinder pairs share a common combustion chamber and the pistons are mounted to reciprocate substantially in phase, one of the pistons in each piston pair receiving a rich mixture which is ignited by a sparkplug in that cylinder, with the other cylinder in the cylinder pair being passive in its preferred form, and receiving through a separate intake valve either pure air or a leaner mixture into which the combusted richer mixture pours, insuring that the greatest combustion possible resulting in the greatest percentage of carbon dioxide formation as opposed to carbon monoxide is created.

  4. Acoustical heat pumping engine

    DOEpatents

    Wheatley, J.C.; Swift, G.W.; Migliori, A.

    1983-08-16

    The disclosure is directed to an acoustical heat pumping engine without moving seals. A tubular housing holds a compressible fluid capable of supporting an acoustical standing wave. An acoustical driver is disposed at one end of the housing and the other end is capped. A second thermodynamic medium is disposed in the housing near to but spaced from the capped end. Heat is pumped along the second thermodynamic medium toward the capped end as a consequence both of the pressure oscillation due to the driver and imperfect thermal contact between the fluid and the second thermodynamic medium. 2 figs.

  5. Acoustical heat pumping engine

    DOEpatents

    Wheatley, John C.; Swift, Gregory W.; Migliori, Albert

    1983-08-16

    The disclosure is directed to an acoustical heat pumping engine without moving seals. A tubular housing holds a compressible fluid capable of supporting an acoustical standing wave. An acoustical driver is disposed at one end of the housing and the other end is capped. A second thermodynamic medium is disposed in the housing near to but spaced from the capped end. Heat is pumped along the second thermodynamic medium toward the capped end as a consequence both of the pressure oscillation due to the driver and imperfect thermal contact between the fluid and the second thermodynamic medium.

  6. Climate Engineering with Stratospheric Aerosols and Associated Engineering Parameters

    SciTech Connect

    Kravitz, Benjamin S.

    2013-02-12

    Climate engineering with stratospheric aerosols, an idea inspired by large volcaniceruptions, could cool the Earth’s surface and thus alleviate some of the predicted dangerous impacts of anthropogenic climate change. However, the effectiveness of climate engineering to achieve a particular climate goal, and any associated side effects, depend on certain aerosol parameters and how the aerosols are deployed in the stratosphere. Through the examples of sulfate and black carbon aerosols, this paper examines "engineering" parameters-aerosol composition, aerosol size, and spatial and temporal variations in deployment-for stratospheric climate engineering. The effects of climate engineering are sensitive to these parameters, suggesting that a particle could be found ordesigned to achieve specific desired climate outcomes. This prospect opens the possibility for discussion of societal goals for climate engineering.

  7. Knock-free engine control system for turbocharged automotive engine

    SciTech Connect

    Hirabayashi, Y.

    1985-04-09

    In a turbocharged internal combustion engine, in order to optimize engine torque output spark timing control and boost pressure control are coordinated in such a manner that spark advance angle is adjusted only when the measured boost pressure equals a predetermined value and is allowed to vary only within a specified range advanced from a reference value derived from an empirical memory table on the basis of engine speed and boost pressure. When engine operating conditions are such that spark advance angle would fall outside of the specified range, spark advance angle is then held at the empirical value and boost pressure is adjusted in order to optimize engine torque. The coordinated control system can also be designed to respond to exhaust gas temperature on a first-priority basis, i.e., when exhaust temperature is sensed to be dangerously high, boost pressure is reduced regardless of other engine conditions.

  8. Supervisory Electrical Engineer- Supervisory Power System Real Time Electrical Engineer

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Power System Operations Operations Engineering, (J4200) 5555...

  9. Increased Engine Efficiency via Advancements in Engine Combustion Systems

    Energy.gov [DOE]

    Presentation given at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010.

  10. Unmanned deepwater-line repair system passes full-scale trials

    SciTech Connect

    Venzi, S.; Vienna, A. )

    1993-09-06

    The first ever full-scale tests of an unmanned, deepwater-pipeline repair system were successfully conducted last year off the coast of Italy. The Italian gas-transmission company SNAM tested a submersible automatic system (SAS) sealine repair system at a depth of 600 m. The modular SAS allows sealines to be repaired by installation of the Nuovo Pignone mechanical connector. The system's trials simulated complete repair intervention on the 20-in. Trans mediterranean pipeline and provided unprecedented experience to SNAM and to the other involved in this project. The paper discusses the origin of the idea for the SAS, the design of the system, construction and testing, the first sea trials, final deep sea trials, and future developments.

  11. Tiny Terminators: New Micro-Robots Assemble, Repair Themselves and Are Surprisingly Strong

    Energy.gov [DOE]

    Tiny robots that can assemble and repair themselves? Watch a video of Argonne National Laboratory's micro-robots that easily perform tasks that can challenge other robots, including moving objects that are larger than themselves.

  12. Inducible error-prone repair in B. subtilis. Final report, September 1, 1979-June 30, 1981

    SciTech Connect

    Yasbin, R. E.

    1981-06-01

    The research performed under this contract has been concentrated on the relationship between inducible DNA repair systems, mutagenesis and the competent state in the gram positive bacterium Bacillus subtilis. The following results have been obtained from this research: (1) competent Bacillus subtilis cells have been developed into a sensitive tester system for carcinogens; (2) competent B. subtilis cells have an efficient excision-repair system, however, this system will not function on bacteriophage DNA taken into the cell via the process of transfection; (3) DNA polymerase III is essential in the mechanism of the process of W-reactivation; (4) B. subtilis strains cured of their defective prophages have been isolated and are now being developed for gene cloning systems; (5) protoplasts of B. subtilis have been shown capable of acquiring DNA repair enzymes (i.e., enzyme therapy); and (6) a plasmid was characterized which enhanced inducible error-prone repair in a gram positive organism.

  13. Community-Minded Interns at Savannah River Site Help Area Residents in Need with Home Repairs

    Energy.gov [DOE]

    AIKEN, S.C. – More than two dozen college interns who worked at the Savannah River Site (SRS) this summer joined other volunteers and headed into area neighborhoods to help people in need with home repairs.

  14. Review of Maintenance and Repair Times for Components in Technological Facilities

    SciTech Connect

    L. C. Cadwallader

    2012-11-01

    This report is a compilation of some unique component repair time data and it also presents citations of more extensive reports where lists of repair times can be found. This collection of information should support analysts who seek to quantify maintainability and availability of high technology and nuclear energy production systems. While there are newer sources of repair time information, most, if not all, of the newer sources are proprietary and cannot be shared. This report offers data that, while older, is openly accessible and can serve as reasonable estimates of repair times, at least for initial studies. Some times were found for maintenance times in radiation environments, and some guidance for multiplicative factors to use to account for work in contamination areas.

  15. Rotary engine and method

    SciTech Connect

    Overman, K.

    1991-12-17

    This paper describes a rotary engine. It comprises: an engine block, the block defining an internal rotor cavity, a rotor, the rotor eccentrically positioned within the cavity, the block defining a combustion chamber, the combustion chamber positioned exteriorly of the rotor cavity and in fluid communication therewith, a pair of pistons, the pistons affixed to each other and slidably mounted within the rotor, an air inlet valve, the inlet valve positioned at one side of the combustion chamber, a dual acting outlet valve, the outlet valve comprising a top and a bottom rest, the outlet valve positioned at the other side of the combustion chamber, the combustion chamber defining both an outlet valve ceiling port and an outlet valve floor port, means to ignite fuel, the fuel ignition means located within the combustion chamber between the inlet and outlet valves, the block defining an exhaust port, the exhaust port spaced circumferentially from the combustion chamber and in fluid communication with the rotor cavity, the block defining an inlet port, and the inlet port circumfrentially spaced from the outlet port and in fluid communication with the rotor cavity.

  16. Rotary vee engine

    SciTech Connect

    Sullivan, R.W.; Holder, T.J.; Buchanan, M.F.

    1991-07-09

    This patent describes a rotary vee engine. It comprises a housing having outer ends; two cylinder blocks each having inner and outer ends and mounted in the housing for rotation of one cylinder block about a first rotational axis and rotation of the other cylinder block about a second rotational axis, the axes being angled to intersect adjacent the inner ends of the blocks at an included angle less than one hundred and eighty degrees; each cylinder bloc having cylinders positioned at a selected radial distance from the respective rotational axis and extending parallel to the axis to intersect the inner end of the cylinder block; angled pistons each having a portion disposed in a cylinder of one block and a portion disposed in a cylinder in the other block for orbital motion of the pistons coordinately with the rotation of the cylinder blocks; angled support shaft means for rotatably and axially supporting each of the cylinder blocks in the housing; an improved air/fuel system for directing pressurized charges of air/fuel mixture radially inwardly into each of the cylinders during the operation of the engine comprising; a central cavity formed by the housing between the inner ends of the cylinder blocks for receiving air/fuel mixture.

  17. Rotary reciprical combustion engines

    SciTech Connect

    Blount, D.H.

    1992-10-20

    This patent describes a rotary-reciprocal combustion engine having a cycle which includes the four strokes of intake, compression, expansion and exhaustion, the engine. It comprises: a housing formed with a peripheral wall with side walls, a rotor in the housing, the inner surface of the peripheral inner wall being cylindrical; a shaft; mounted in the center of the housing, passing through the rotor's hub and extending through the side walls of the housing, the hub having means to allow the rotor to reciprocate on the shaft while the shaft is rotating with the rotor; a reciprocal and rotary guide having means to guide the rotary and reciprocal motions of the rotor while keeping the rotor's piston in continuous sealing contact with the cylinder chamber walls and varying the volume of the cylinder chambers enabling a compression of a gaseous mixture to take place after aspirating a gaseous mixture; an ignition system having means for igniting compressed gaseous mixture and expansion of the cylinder chambers due to pressure of the combustion products.

  18. In situ repair of a failed compression fitting

    DOEpatents

    Wolbert, R.R.; Jandrasits, W.G.

    1985-08-05

    A method and apparatus for the in situ repair of a failed compression fitting is provided. Initially, a portion of a guide tube is inserted coaxially in the bore of the compression fitting and locked therein. A close fit dethreading device is then coaxially mounted on the guide tube to cut the threads from the fitting. Thereafter, the dethreading device and guide tube are removed and a new fitting is inserted onto the dethreaded fitting with the body of the new fitting overlaying the dethreaded portion. Finally, the main body of the new fitting is welded to the main body of the old fitting whereby a new threaded portion of the replacement fitting is precisely coaxial with the old threaded portion. If needed, a bushing is located on the dethreaded portion which is sized to fit snugly between the dethreaded portion and the new fitting. Preferably, the dethreading device includes a cutting tool which is moved incrementally in a radial direction whereby the threads are cut from the threaded portion of the failed fitting in increments.

  19. In situ repair of a failed compression fitting

    DOEpatents

    Wolbert, Ronald R.; Jandrasits, Walter G.

    1986-01-01

    A method and apparatus for the in situ repair of a failed compression fitg is provided. Initially, a portion of a guide tube is inserted coaxially in the bore of the compression fitting and locked therein. A close fit dethreading device is then coaxially mounted on the guide tube to cut the threads from the fitting. Thereafter, the dethreading device and guide tube are removed and a new fitting is inserted onto the dethreaded fitting with the body of the new fitting overlaying the dethreaded portion. Finally, the main body of the new fitting is welded to the main body of the old fitting whereby a new threaded portion of the replacement fitting is precisely coaxial with the old threaded portion. If needed, a bushing is located on the dethreaded portion which is sized to fit snugly between the dethreaded portion and the new fitting. Preferably, the dethreading device includes a cutting tool which is moved incrementally in a radial direction whereby the threads are cut from the threaded portion of the failed fitting in increments.

  20. Method to repair localized amplitude defects in a EUV lithography mask blank

    DOEpatents

    Stearns, Daniel G.; Sweeney, Donald W.; Mirkarimi, Paul B.; Chapman, Henry N.

    2005-11-22

    A method and apparatus are provided for the repair of an amplitude defect in a multilayer coating. A significant number of layers underneath the amplitude defect are undamaged. The repair technique restores the local reflectivity of the coating by physically removing the defect and leaving a wide, shallow crater that exposes the underlying intact layers. The particle, pit or scratch is first removed the remaining damaged region is etched away without disturbing the intact underlying layers.

  1. RESTORING A DAMAGED 16-YEAR -OLD INSULATING POLYMER CONCRETE DIKE OVERLAY: REPAIR MATERIALS AND TECHNOLOGIES.

    SciTech Connect

    SUGAMA,T.

    2007-01-01

    The objective of this program was to design and formulate organic polymer-based material systems suitable for repairing and restoring the overlay panels of insulating lightweight polymer concrete (ILPC) from the concrete floor and slope wall of a dike at KeySpan liquefied natural gas (LNG) facility in Greenpoint, Brooklyn, NY, just over sixteen years ago. It also included undertaking a small-scale field demonstration to ensure that the commercial repairing technologies were applicable to the designed and formulated materials.

  2. EA-2040: Strategic Petroleum Reserve Repair/Enhancement of Access to Remote

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Pipeline Valve Stations, West Hackberry; Calcasieu and Cameron Parishes, Louisiana | Department of Energy 40: Strategic Petroleum Reserve Repair/Enhancement of Access to Remote Pipeline Valve Stations, West Hackberry; Calcasieu and Cameron Parishes, Louisiana EA-2040: Strategic Petroleum Reserve Repair/Enhancement of Access to Remote Pipeline Valve Stations, West Hackberry; Calcasieu and Cameron Parishes, Louisiana Summary DOE is preparing an EA that evaluates the potential environmental

  3. Intrinsically irreversible thermoacoustic heat engine

    SciTech Connect

    Wheatley, J.; Hofler, T.; Swift, G.W.; Migliori, A.

    1983-07-01

    Certain thermoacoustic effects are described which form the basis for a heat engine that is intrinsically irreversible in the sense that it requires thermal lags for its operation. After discussing several acoustical heating and cooling effects, including the behavior of a new structure called a ''thermoacoustic couple,'' we discuss structures that can be placed in acoustically resonant tubes to produce both substantial heat pumping effects and, for restricted heat inputs, large temperature differences. The results are analyzed quantitatively using a second-order thermoacoustic theory based on the work of Rott. The qualities of the acoustic engine are generalized to describe a class of intrinsically irreversible heat engines of which the present acoustic engine is a special case. Finally the results of analysis of several idealized intrinsically irreversible engines are presented. These suggest that the efficiency of such engines may be determined primarily by geometry or configuration rather than by temperature.

  4. Pressurized-fluid-operated engine

    SciTech Connect

    Holleyman, J.E.

    1990-01-30

    This patent describes a pressurized-fluid-operated reciprocating engine for providing output power by use of a pressurized gas that expands within the engine without combustion. It comprises: an engine block having a plurality of cylinders within which respective pistons are reciprocatable to provide a rotary power output; gas inlet means connected with the engine block for introducing a pressurized gas into the respective cylinders in a predetermined, timed relationship to provide a smooth power output from the engine; gas outlet means connected with the engine block for conveying exhaust gas from the respective cylinders after the gas expanded to move the pistons within the cylinders; and recirculation means extending between the inlet means and the outlet means for recirculation a predetermined quantity of exhaust gas. The recirculation means including ejector means for drawing exhaust gas into the recirculation means.

  5. ARM - Datastreams - aeri01engineer

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Datastreamsaeri01engineer Documentation Data Quality Plots Citation DOI: 10.5439/1025140 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : AERI01ENGINEER Atmospheric Emitted Radiance Interferometer (AERI) 01: engineering data Active Dates 1995.07.22 - 2014.03.12 Originating Instrument Atmospheric Emitted Radiance Interferometer (AERI) Measurements Only measurements

  6. Mechanical Engineering Department Technical Review

    SciTech Connect

    Carr, R.B.; Denney, R.M.

    1981-07-01

    The Mechanical Engineering Department Technical Review is published to inform readers of various technical activities within the Department, promote exchange of ideas, and give credit to personnel who are achieving the results. The report is presented in two parts: technical achievements and publication abstracts. The first is divided into seven sections, each of which reports on an engineering division and its specific activities related to nuclear tests, nuclear explosives, weapons, energy systems, engineering sciences, magnetic fusion, and materials fabrication.

  7. High temperature turbine engine structure

    DOEpatents

    Carruthers, William D.; Boyd, Gary L.

    1992-01-01

    A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

  8. High temperature turbine engine structure

    DOEpatents

    Carruthers, William D.; Boyd, Gary L.

    1993-01-01

    A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

  9. High temperature turbine engine structure

    DOEpatents

    Carruthers, William D.; Boyd, Gary L.

    1994-01-01

    A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

  10. Mod II Stirling engine overviews

    SciTech Connect

    Farrell, R.A.

    1988-01-01

    The Mod II engine is a second-generation automotive Stirling engine (ASE) optimized for part-power operation. It has been designed specifically to meet the fuel economy and exhaust emissions objectives of the ASE development program. The design, test experience, performance, and comparison of data to analytical performance estimates of the Mod II engine to date are reviewed. Estimates of Mod II performance in its final configuration are also given. 12 references.

  11. Facility Engineering | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Facility Engineering Facility Engineering Facility Engineering (FE) programmatic element efforts within EM encompasses real property asset management across the EM complex as well as the transfers of real property to Community Reuse Organizations and other entities for asset revitalization and/or economic development. In addition, FE coordinates, analyzes, and concurs on EM site submission for infrastructure reporting, such as, in the Integrated Facilities and Infrastructure crosscut and the

  12. Systems Engineering | Photovoltaic Research | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineering We provide engineering testing and evaluation of photovoltaic (PV) products developed by companies during work sponsored by the U.S. Department of Energy (DOE). We determine if products meet performance criteria established by DOE for a company's contractual obligations. PV Research Other Reliability & Engineering pages: Real-Time PV & Solar Resource Testing Accelerated Testing & Analysis Systems Integration Materials Science Chemistry & Nanoscience National Center

  13. Systems Engineering | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engineering Systems Engineering Project objectives: to create an interactive, physics based, systems analysis tool for geothermal energy development that will: Identify points of attack to maximize efforts and investment dollars; Identify the parameter space where geothermal energy production is physically and economically viable; Provide a platform for public education and interaction. analysis_lowry_systems_engineering.pdf (473.49 KB) More Documents & Publications track 2: hydrothermal

  14. Formation and Repair of Tobacco Carcinogen-Derived Bulky DNA Adducts

    DOE PAGES [OSTI]

    Hang, Bo

    2010-01-01

    DNA adducts play a central role in chemical carcinogenesis. The analysis of formation and repair of smoking-related DNA adducts remains particularly challenging as both smokers and nonsmokers exposed to smoke are repetitively under attack from complex mixtures of carcinogens such as polycyclic aromatic hydrocarbons and N -nitrosamines. The bulky DNA adducts, which usually have complex structure, are particularly important because of their biological relevance. Several known cellular DNA repair pathways have been known to operate in human cells on specific types of bulky DNA adducts, for example, nucleotide excision repair, base excision repair, and direct reversal involving O 6more » -alkylguanine DNA alkyltransferase or AlkB homologs. Understanding the mechanisms of adduct formation and repair processes is critical for the assessment of cancer risk resulting from exposure to cigarette smoke, and ultimately for developing strategies of cancer prevention. This paper highlights the recent progress made in the areas concerning formation and repair of bulky DNA adducts in the context of tobacco carcinogen-associated genotoxic and carcinogenic effects.« less

  15. engineer | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    ancient building system architect biomimicry building technology cooling cu daylight design problem energy use engineer fred andreas geothermal green building heat transfer...

  16. Data System Sciences & Engineering Group

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Architectures for National Security Risk Analysis Streaming Realtime Sensor Networks Visual Analytics Opportunities Contact Us Data System Sciences & Engineering Group DSSE goes...

  17. SC e-journals, Engineering

    Office of Scientific and Technical Information (OSTI)

    Engineering Science Chemical Science Chemistry of Materials Chinese Optics Letters ... Robotic Systems Journal of Solid State Chemistry Journal of The American Ceramic Society ...

  18. RESEARCH PERSONNEL AND ENGINEERING STAFF

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Mechanical Engineer Postdoctoral Research Associates Bijay Agrawal - To 122304 Narayana P. Appathurai - To 93004 Lie-Wen Chen - To 9104 Vicenzo Greco Marian Jandel Seweryn...

  19. Engine Lubricants: Trends and Challenges

    Energy.gov [DOE]

    This overview discusses how lubricant developers, lubricant marketers, and OEMs are working with the engine community to overcome performance challenges worldwide.

  20. Systems Engineer | Department of Energy

    Energy Saver

    disruptions in oil supplies. Organizational Structure: This position is located in the Office of the Assistant Project Manager for Systems & Projects, Systems Engineering and...

  1. Aztech Engineers | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Connecticut Zip: 6120 Product: Connecticut-based consulting engineers specializing in HVAC, Plumbing, Fire-Protection, Electrical, and Geo-Thermal Well Systems. Coordinates:...

  2. LES Modeling for IC Engines

    Office of Energy Efficiency and Renewable Energy (EERE)

    Large eddy simulation offers better accuracy and sensitivity to study cyclic variability, mode transition and mixing effects in engine design and operation

  3. Quality engineering as a profession.

    SciTech Connect

    Kolb, Rachel R.; Hoover, Marcey L.

    2012-12-01

    Over the course of time, the profession of quality engineering has witnessed significant change, from its original emphasis on quality control and inspection to a more contemporary focus on upholding quality processes throughout the organization and its product realization activities. This paper describes the profession of quality engineering, exploring how today's quality engineers and quality professionals are certified individuals committed to upholding quality processes and principles while working with different dimensions of product development. It also discusses the future of the quality engineering profession and the future of the quality movement as a whole.

  4. Regulation for a gas engine

    SciTech Connect

    Esslingen, H.B.; Daudel, H.; Brandner, B.; Klueppel, K.

    1989-06-27

    This patent describes a control system for an internal combustion engine provided with an ignition pulse generator having adjustable ignition angle characteristics comprising: (a) adjustment means for receiving a control signal and for adjusting the ignition angle of the ignition pulse generator in response thereto; (b) means for determining engine rotational speed; (c) means for determining engine load; (d) means for determining a base ignition angle as a function of engine load and engine rotational speed; (e) means for determining an actual lambda-value during operation of the internal combustion engine; (f) means for determining a desired lambda-value as a function of engine rotational speed and engine load; (g) means for determining a lambda-difference value by comparing the magnitude of the actual lambda-value with the magnitude of the desired lambda-value; (h) means for determining a correction of the base ignition angle as a function of the magnitude of the lambda-difference value and the engine load; and (i) means for producing the control signal as a function of the corrected base ignition angle and for supplying the control signal to the adjustment means.

  5. Resonator coiling in thermoacoustic engines

    SciTech Connect

    Olson, J.R.; Swift, G.W.

    1995-11-01

    Coiling the resonator of a thermoacoustic engine is one way to try to minimize the engine`s size. However, flow in bent pipes is known to alter the fluid flow pattern because of centrifugal forces. Theory and measurements will be presented on the energy dissipation caused by oscillating flow in curved pipes. Measurements have been taken using free oscillations of liquids in U-tubes, and using a thermoacoustic engine with straight and bent resonators. [Work supported by the TTI program of the US Department of Energy, and by the Tektronix Corporation.

  6. Sandia Energy - Automotive HCCI Engine

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    because of its potential to rival the high efficiency of diesel engines while keeping NOx and particulate emissions extremely low. However, researchers must overcome several...

  7. Electronics Engineer- OPEN CONTINUOUS ANNOUNCEMENT

    Energy.gov [DOE]

    This recruitment is an OPEN CONTINUOUS ANNOUNCEMENT (OCA) being utilized to fill current and future Electrical Engineer vacancies within BPA's Transmission Field Services organization. Positions...

  8. Electrical Engineer- OPEN CONTINUOUS ANNOUNCEMENT

    Energy.gov [DOE]

    This recruitment is an OPEN CONTINUOUS ANNOUNCEMENT (OCA) being utilized to fill current and future Electrical Engineer vacancies within BPA's Transmission Field Services organization. Positions...

  9. Mission | APS Engineering Support Division

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    mission, the APS Engineering Support Division provides: Highly reliable, state-of-the-art computer infrastructure to meet the needs of the APS. Leading-edge information...

  10. Nuclear Engineering | Argonne National Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Nuclear Engineering Nearly every commercial reactor in existence today owes its development to seminal research conducted at Argonne National Laboratory. Building on this heritage, ...

  11. Cyber Engineering Research Laboratory (CERL)

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering ...

  12. Optimizing PDFs for Search Engines

    Energy.gov [DOE]

    For search engine optimization (SEO), follow the Office of Energy Efficiency and Renewable Energy (EERE) best practices for adding metadata to PDFs.

  13. ABB Combustion Engineering`s nuclear experience and technologies

    SciTech Connect

    Matzie, R.A.

    1994-12-31

    ABB Combustion Engineering`s nuclear experience and technologies are outlined. The following topics are discussed: evolutionary approach using proven technology, substantial improvement to plant safety, utility perspective up front in developing design, integrated design, competitive plant cost, operability and maintainability, standardization, and completion of US NRC technical review.

  14. Gas turbine engine

    DOEpatents

    Lawlor, Shawn P.; Roberts, II, William Byron

    2016-03-08

    A gas turbine engine with a compressor rotor having compressor impulse blades that delivers gas at supersonic conditions to a stator. The stator includes a one or more aerodynamic ducts that each have a converging portion and a diverging portion for deceleration of the selected gas to subsonic conditions and to deliver a high pressure oxidant containing gas to flameholders. The flameholders may be provided as trapped vortex combustors, for combustion of a fuel to produce hot pressurized combustion gases. The hot pressurized combustion gases are choked before passing out of an aerodynamic duct to a turbine. Work is recovered in a turbine by expanding the combustion gases through impulse blades. By balancing the axial loading on compressor impulse blades and turbine impulse blades, asymmetrical thrust is minimized or avoided.

  15. Quick release engine cylinder

    DOEpatents

    Sunnarborg, Duane A.

    2000-01-01

    A quick release engine cylinder allows optical access to an essentially unaltered combustion chamber, is suitable for use with actual combustion processes, and is amenable to rapid and repeated disassembly and cleaning. A cylinder member, adapted to constrain a piston to a defined path through the cylinder member, sealingly engages a cylinder head to provide a production-like combustion chamber. A support member mounts with the cylinder member. The support-to-cylinder mounting allows two relationships therebetween. In the first mounting relationship, the support engages the cylinder member and restrains the cylinder against the head. In the second mounting relationship, the cylinder member can pass through the support member, moving away from the head and providing access to the piston-top and head.

  16. Internal combustion rotary engine

    SciTech Connect

    Chen, S.P.

    1993-08-24

    An internal combustion rotary engine is described comprising: an internal combustion chamber wherein a combustible fuel-air mixture is ignited for producing a driving gas flow; a central rotor having an outer surface in which at least one group of curved channels circumferentially-and-axially extending without radially extending through the central rotor; and at least one annular rotor each enclosing the central rotor having an inner surface in which a corresponding number of curved channels circumferentially-and-axially extending without radially extending through the annular rotor; when the curved channels in the central rotor communicate with the curved channels in the annular rotor, the driving gas flow circumferentially-and-axially passing between the outer surface of the central rotor and the inner surface of the annular rotor for rotating the central rotor and the annular rotor in opposite directions.

  17. Engine Cylinder Temperature Control

    DOEpatents

    Kilkenny, Jonathan Patrick; Duffy, Kevin Patrick

    2005-09-27

    A method and apparatus for controlling a temperature in a combustion cylinder in an internal combustion engine. The cylinder is fluidly connected to an intake manifold and an exhaust manifold. The method and apparatus includes increasing a back pressure associated with the exhaust manifold to a level sufficient to maintain a desired quantity of residual exhaust gas in the cylinder, and varying operation of an intake valve located between the intake manifold and the cylinder to an open duration sufficient to maintain a desired quantity of fresh air from the intake manifold to the cylinder, wherein controlling the quantities of residual exhaust gas and fresh air are performed to maintain the temperature in the cylinder at a desired level.

  18. Career Map: Quality Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Quality Engineer Career Map: Quality Engineer A male quality engineer sits at a desk with several computers showing data. Quality Engineer Position Title Quality Engineer Alternate Title(s) Quality Assurance, Quality Control Education & Training Level Advanced, Bachelors required, prefer graduate degree or equivalent experience Education & Training Level Description Quality engineers need a bachelor's degree in an engineering field, plus experience. Professional certifications may be

  19. REDUCED ENGINE FRICTION AND WEAR

    SciTech Connect

    Ron Matthews

    2005-05-01

    This Final Technical Report discusses the progress was made on the experimental and numerical tasks over the duration of this project regarding a new technique for decreasing engine friction and wear via liner rotation. The experimental subtasks involved quantifying the reduction in engine friction for a prototype rotating liner engine relative to a comparable baseline engine. Both engine were single cylinder conversions of nominally identical production four-cylinder engines. Hot motoring tests were conducted initially and revealed that liner rotation decreased engine friction by 20% under motoring conditions. A well-established model was used to estimate that liner rotation should decrease the friction of a four-cylinder engine by 40% under hot motoring conditions. Hot motoring tear-down tests revealed that the crankshaft and valve train frictional losses were essentially the same for the two engines, as expected. However, the rotating liner engine had much lower (>70%) piston assembly friction compared to the conventional engine. Finally, we used the Instantaneous IMEP method to compare the crank-angle resolved piston assembly friction for the two engines. Under hot motoring conditions, these measurements revealed a significant reduction in piston assembly friction, especially in the vicinity of compression TDC when the lubrication regime transitions from hydrodynamic through mixed and into boundary friction. We have some remaining problems with these measurements that we expect to solve during the next few weeks. We will then perform these measurements under firing conditions. We also proposed to improve the state-of-the-art of numerical modeling of piston assembly friction for conventional engines and then to extend this model to rotating liner engines. Our research team first modeled a single ring in the Purdue ring-liner test rig. Our model showed good agreement with the test rig data for a range of speeds and loads. We then modeled a complete piston

  20. Diesel engines vs. spark ignition gasoline engines -- Which is ``greener``?

    SciTech Connect

    Fairbanks, J.W.

    1997-12-31

    Criteria emissions, i.e., NO{sub x}, PM, CO, CO{sub 2}, and H{sub 2}, from recently manufactured automobiles, compared on the basis of what actually comes out of the engines, the diesel engine is greener than spark ignition gasoline engines and this advantage for the diesel engine increases with time. SI gasoline engines tend to get out of tune more than diesel engines and 3-way catalytic converters and oxygen sensors degrade with use. Highway measurements of NO{sub 2}, H{sub 2}, and CO revealed that for each model year, 10% of the vehicles produce 50% of the emissions and older model years emit more than recent model year vehicles. Since 1974, cars with SI gasoline engines have uncontrolled emission until the 3-way catalytic converter reaches operating temperature, which occurs after roughly 7 miles of driving. Honda reports a system to be introduced in 1998 that will alleviate this cold start problem by storing the emissions then sending them through the catalytic converter after it reaches operating temperature. Acceleration enrichment, wherein considerable excess fuel is introduced to keep temperatures down of SI gasoline engine in-cylinder components and catalytic converters so these parts meet warranty, results in 2,500 times more CO and 40 times more H{sub 2} being emitted. One cannot kill oneself, accidentally or otherwise, with CO from a diesel engine vehicle in a confined space. There are 2,850 deaths per year attributable to CO from SI gasoline engine cars. Diesel fuel has advantages compared with gasoline. Refinery emissions are lower as catalytic cracking isn`t necessary. The low volatility of diesel fuel results in a much lower probability of fires. Emissions could be improved by further reducing sulfur and aromatics and/or fuel additives. Reformulated fuel has become the term covering reducing the fuels contribution to emissions. Further PM reduction should be anticipated with reformulated diesel and gasoline fuels.

  1. Development of bonded composite doublers for the repair of oil recovery equipment.

    SciTech Connect

    Roach, David W.; Rackow, Kirk A.

    2005-06-01

    An unavoidable by-product of a metallic structure's use is the appearance of crack and corrosion flaws. Economic barriers to the replacement of these structures have created an aging infrastructure and placed even greater demands on efficient and safe repair methods. In the past decade, an advanced composite repair technology has made great strides in commercial aviation use. Extensive testing and analysis, through joint programs between the Sandia Labs FAA Airworthiness Assurance Center and the aviation industry, have proven that composite materials can be used to repair damaged aluminum structure. Successful pilot programs have produced flight performance history to establish the durability of bonded composite patches as a permanent repair on commercial aircraft structures. With this foundation in place, this effort is adapting bonded composite repair technology to civil structures. The use of bonded composite doublers has the potential to correct the difficulties associated with current repair techniques and the ability to be applied where there are no rehabilitation options. It promises to be cost-effective with minimal disruption to the users of the structure. This report concludes a study into the application of composite patches on thick steel structures typically used in mining operations. Extreme fatigue, temperature, erosive, and corrosive environments induce an array of equipment damage. The current weld repair techniques for these structures provide a fatigue life that is inferior to that of the original plate. Subsequent cracking must be revisited on a regular basis. The use of composite doublers, which do not have brittle fracture problems such as those inherent in welds, can help extend the structure's fatigue life and reduce the equipment downtime. Two of the main issues for adapting aircraft composite repairs to civil applications are developing an installation technique for carbon steel and accommodating large repairs on extremely thick structures

  2. INTERNAL REPAIR OF GAS PIPLINES SURVEY OF OPERATOR EXPERIENCE AND INDUSTRY NEEDS REPORT

    SciTech Connect

    Ian D. Harris

    2003-09-01

    A repair method that can be applied from the inside of a gas transmission pipeline (i.e., a trenchless repair) is an attractive alternative to conventional repair methods since the need to excavate the pipeline is precluded. This is particularly true for pipelines in environmentally sensitive and highly populated areas. The objectives of the project are to evaluate, develop, demonstrate, and validate internal repair methods for pipelines; develop a functional specification for an internal pipeline repair system; and prepare a recommended practice for internal repair of pipelines. The purpose of this survey is to better understand the needs and performance requirements of the natural gas transmission industry regarding internal repair. A total of fifty-six surveys were sent to pipeline operators. A total of twenty completed surveys were returned, representing a 36% response rate, which is considered very good given the fact that tailored surveys are known in the marketing industry to seldom attract more than a 10% response rate. The twenty survey responses produced the following principal conclusions: (1) Use of internal weld repair is most attractive for river crossings, under other bodies of water (e.g., lakes and swamps) in difficult soil conditions, under highways, under congested intersections, and under railway crossings. All these areas tend to be very difficult and very costly if, and where, conventional excavated repairs may be currently used. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling (HDD) when a new bore must be created to solve a leak or other problem in a water/river crossing. (3) The typical travel distances required can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). In concept, these groups require pig-based systems; despooled umbilical systems could be considered for the first two groups

  3. 3D Torus Routing Engine Module for OFA OpenSM v. 1.0

    Energy Science and Technology Software Center

    2009-11-12

    This OpenFabrics Alliance (OFA) OpenSM routing engine module provides credit-loop-free routing while supporting two quality of service (QoS) levels for an InfiniBand fabric with a 3D torus topology. In addition it is able to route around multiple failed fabric links or a single failed fabric switch without introducing credit loops, and without changing path Service Level (SL) values granted before the failure.This OFA OpenSM routing engine module improves the operational characteristics of a parallel computermore » built using an InfiniBand fabric with a 3D torus topology. By providing two QoS levels, it allows system administrators to prevent application interprocess communication and file system communication from impacting each other. By providing the capability to route traffic around failed fabric components, it enables repair of failed components without impacting jobs running on the computer system.« less

  4. Stirling engine with pressurized crankcase

    DOEpatents

    Corey, John A.

    1988-01-01

    A two piston Stirling engine wherein the pistons are coupled to a common crankshaft via bearing means, the pistons include pad means to minimize friction between the pistons and the cylinders during reciprocation of the pistons, means for pressurizing the engine crankcase, and means for cooling the crankshaft and the bearing means eliminating the need for oil in the crankcase.

  5. Envera Variable Compression Ratio Engine

    SciTech Connect

    Charles Mendler

    2011-03-15

    Aggressive engine downsizing, variable compression ratio and use of the Atkinson cycle are being combined to improve fuel economy by up to 40 percent relative to port fuel injected gasoline engines, while maintaining full engine power. Approach Engine downsizing is viewed by US and foreign automobile manufacturers as one of the best options for improving fuel economy. While this strategy has already demonstrated a degree of success, downsizing and fuel economy gains are currently limited. With new variable compression ratio technology however, the degree of engine downsizing and fuel economy improvement can be greatly increased. A small variable compression ratio (VCR) engine has the potential to return significantly higher vehicle fuel economy while also providing high power. Affordability and potential for near term commercialization are key attributes of the Envera VCR engine. VCR Technology To meet torque and power requirements, a smaller engine needs to do more work per stroke. This is typically accomplished by boosting the incoming charge with either a turbo or supercharger so that more energy is present in the cylinder per stroke to do the work. With current production engines the degree of engine boosting (which correlates to downsizing) is limited by detonation (combustion knock) at high boost levels. Additionally, the turbo or supercharger needs to be responsive and efficient while providing the needed boost. VCR technology eliminates the limitation of engine knock at high load levels by reducing compression ratio to {approx}9:1 (or whatever level is appropriate) when high boost pressures are needed. By reducing the compression ratio during high load demand periods there is increased volume in the cylinder at top dead center (TDC) which allows more charge (or energy) to be present in the cylinder without increasing the peak pressure. Cylinder pressure is thus kept below the level at which the engine would begin to knock. When loads on the engine are low

  6. Engineering approaches to ecosystem restoration

    SciTech Connect

    Hayes, D.F.

    1998-07-01

    This proceedings CD ROM contains 127 papers on developing and evaluating engineering approaches to wetlands and river restoration. The latest engineering developments are discussed, providing valuable insights to successful approaches for river restoration, wetlands restoration, watershed management, and constructed wetlands for stormwater and wastewater treatment. Potential solutions to a wide variety of ecosystem concerns in urban, suburban, and coastal environments are presented.

  7. Rotary valve internal combustion engine

    SciTech Connect

    Bunk, P.H.

    1989-03-28

    A rotary valve internal combustion engine is described, comprising: an engine block; at least one cylinder in the engine block; at least one cylinder having a top end; cylinder head means located adjacent the top end of at least one cylinder, the cylinder head means having a cylindrically shaped cavity therein, the cylindrically shaped cavity being oriented in perpendicular relation to at least one cylinder; a piston sealingly mounted in at least one cylinder for reciprocable movement therein, the reciprocable movement including an intake stroke and an exhaust stroke; engine shaft means rotatably mounted to the engine block; means within the engine block for converting the reciprocable movement of the piston into rotary motion of the engine shaft means; a cylinder port located at the top end of at least one cylinder; a rotary valve rotatably mounted in the cylindrically shaped cavity; means connected with the engine shaft means for rotating the rotary valve in a predetermined synchronization with the reciprocable movement of the piston; aspiration means in the rotary valve for selectively aspirating at least one cylinder during the intake an exhaust strokes; and a spark plug removably mounted within the rotary valve and rotatable therewith.

  8. HCCI Engine Optimization and Control

    SciTech Connect

    Rolf D. Reitz

    2005-09-30

    The goal of this project was to develop methods to optimize and control Homogeneous-Charge Compression Ignition (HCCI) engines, with emphasis on diesel-fueled engines. HCCI offers the potential of nearly eliminating IC engine NOx and particulate emissions at reduced cost over Compression Ignition Direct Injection engines (CIDI) by controlling pollutant emissions in-cylinder. The project was initiated in January, 2002, and the present report is the final report for work conducted on the project through December 31, 2004. Periodic progress has also been reported at bi-annual working group meetings held at USCAR, Detroit, MI, and at the Sandia National Laboratories. Copies of these presentation materials are available on CD-ROM, as distributed by the Sandia National Labs. In addition, progress has been documented in DOE Advanced Combustion Engine R&D Annual Progress Reports for FY 2002, 2003 and 2004. These reports are included as the Appendices in this Final report.

  9. Engine combustion and flow diagnostics

    SciTech Connect

    1995-12-31

    This informative publication discusses the application of diagnostic techniques to internal combustion engines. The papers included fall into three broad categories: flow diagnostics, combustion diagnostics, and fuel spray diagnostics. Contents include: controlling combustion in a spark ignition engine by quantitative fuel distribution; a model for converting SI engine flame arrival signals into flame contours; in-cylinder diesel flame imaging compared with numerical computations; ignition and early soot formation in a DI diesel engine using multiple 2-D imaging diagnostics; investigation of diesel sprays using diffraction-based droplet sizing; fuel distribution effects on the combustion of a direct-injection stratified-charge engine; and 2-D measurements of the liquid phase temperature in fuel sprays.

  10. Stirling Engines and Irrigation Pumping

    SciTech Connect

    West, C.D.

    1987-01-01

    This report was prepared in support of the Renewable Energy Applications and Training Project that is sponsored by the U.S. Agency for International Development for which ORNL provides technical assistance. It briefly outlines the performance that might be achievable from various kinds of Stirling-engine-driven irrigation pumps. Some emphasis is placed on the very simple liquid-piston engines that have been the subject of research in recent years and are suitable for manufacture in less well-developed countries. In addition to the results quoted here (possible limits on M4 and pumping head for different-size engines and various operating conditions), the method of calculation is described in sufficient detail for engineers to apply the techniques to other Stirling engine designs for comparison.

  11. DNA repair decline during mouse spermiogenesis results in the accumulation of heritable DNA damage

    SciTech Connect

    Marchetti, Francesco; Marchetti, Francesco; Wryobek, Andrew J

    2008-02-21

    The post-meiotic phase of mouse spermatogenesis (spermiogenesis) is very sensitive to the genomic effects of environmental mutagens because as male germ cells form mature sperm they progressively lose the ability to repair DNA damage. We hypothesized that repeated exposures to mutagens during this repair-deficient phase result in the accumulation of heritable genomic damage in mouse sperm that leads to chromosomal aberrations in zygotes after fertilization. We used a combination of single or fractionated exposures to diepoxybutane (DEB), a component of tobacco smoke, to investigate how differential DNA repair efficiencies during the three weeks of spermiogenesis affected the accumulation of DEB-induced heritable damage in early spermatids (21-15 days before fertilization, dbf), late spermatids (14-8 dbf) and sperm (7- 1 dbf). Analysis of chromosomalaberrations in zygotic metaphases using PAINT/DAPI showed that late spermatids and sperm are unable to repair DEB-induced DNA damage as demonstrated by significant increases (P<0.001) in the frequencies of zygotes with chromosomal aberrations. Comparisons between single and fractionated exposures suggested that the DNA repair-deficient window during late spermiogenesis may be less than two weeks in the mouse and that during this repair-deficient window there is accumulation of DNA damage in sperm. Finally, the dose-response study in sperm indicated a linear response for both single and repeated exposures. These findings show that the differential DNA repair capacity of post-meioitic male germ cells has a major impact on the risk of paternally transmitted heritable damage and suggest that chronic exposures that may occur in the weeks prior to fertilization because of occupational or lifestyle factors (i.e, smoking) can lead to an accumulation of genetic damage in sperm and result in heritable chromosomal aberrations of paternal origin.

  12. DNA Repair Decline During Mouse Spermiogenesis Results in the Accumulation of Heritable DNA Damage

    SciTech Connect

    Marchetti, Francesco; Marchetti, Francesco; Wyrobek, Andrew J.

    2007-12-01

    The post-meiotic phase of mouse spermatogenesis (spermiogenesis) is very sensitive to the genomic effects of environmental mutagens because as male germ cells form mature sperm they progressively lose the ability to repair DNA damage. We hypothesized that repeated exposures to mutagens during this repair-deficient phase result in the accumulation of heritable genomic damage in mouse sperm that leads to chromosomal aberrations in zygotes after fertilization. We used a combination of single or fractionated exposures to diepoxybutane (DEB), a component of tobacco smoke, to investigate how differential DNA repair efficiencies during the three weeks of spermiogenesis affected the accumulation of DEB-induced heritable damage in early spermatids (21-15 days before fertilization, dbf), late spermatids (14-8 dbf) and sperm (7-1 dbf). Analysis of chromosomal aberrations in zygotic metaphases using PAINT/DAPI showed that late spermatids and sperm are unable to repair DEB-induced DNA damage as demonstrated by significant increases (P<0.001) in the frequencies of zygotes with chromosomal aberrations. Comparisons between single and fractionated exposures suggested that the DNA repair-deficient window during late spermiogenesis may be less than two weeks in the mouse and that during this repair-deficient window there is accumulation of DNA damage in sperm. Finally, the dose-response study in sperm indicated a linear response for both single and repeated exposures. These findings show that the differential DNA repair capacity of post-meioitic male germ cells has a major impact on the risk of paternally transmitted heritable damage and suggest that chronic exposures that may occur in the weeks prior to fertilization because of occupational or lifestyle factors (i.e, smoking) can lead to an accumulation of genetic damage in sperm and result in heritable chromosomal aberrations of paternal origin.

  13. Sandia National Laboratories: Careers: Electrical Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Electrical Engineering Electrical Engineering photo Electrical engineers at Sandia design and develop advanced instrumentation systems for in-flight weapons system evaluations and other applications. Sandia creates innovative, science-based, systems-engineering solutions to our nation's most challenging national security problems. Sandia electrical engineers are an integral part of multidisciplinary teams tasked with defining requirements, creating system designs, implementing design

  14. Automotive HCCI Engine Research | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Automotive HCCI Engine Research Automotive HCCI Engine Research 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting ace006_steeper_2012_o.pdf (6.04 MB) More Documents & Publications Automotive HCCI Engine Research Automotive HCCI Engine Research Automotive HCCI Engine Research

  15. Software tools for operations and maintenance planning at Jefferson...

    Office of Scientific and Technical Information (OSTI)

    A queue of pre-planned work is critical to taking advantage of unplanned repair downtime to squeeze in extra work. Jefferson Lab has a web-based tool called ATLis (Accelerator Task ...

  16. Encapsulation of the UV-DNA repair enzyme T4 endonuclease V in liposomes and delivery to human cells

    SciTech Connect

    Ceccoli, J.; Rosales, N.; Tsimis, J.; Yarosh, D.B. )

    1989-08-01

    T4 endonuclease V, a pyrimidine-dimer-specific DNA repair enzyme, was encapsulated in liposomes under mild conditions. The encapsulated enzyme was active, and when applied to ultraviolet (UV)-irradiated human cells in culture, the liposomes increased incision of UV-irradiated cellular DNA, enhanced DNA repair replication, and enhanced survival of UV-irradiated cells. This method is a first step in a new approach for topical application of DNA repair enzymes to human skin to prevent skin cancer.

  17. Engineering Cellulases for Biorefinery

    SciTech Connect

    Manoj Kumar, PhD

    2010-06-27

    Lignocellulosic biomass is the most abundant, least expensive renewable natural biological resource for the production of biobased products and bioenergy is important for the sustainable development of human civilization in 21st century. For making the fermentable sugars from lignocellulosic biomass, a reduction in cellulase production cost, an improvement in cellulase performance, and an increase in sugar yields are all vital to reduce the processing costs of biorefineries. Improvements in specific cellulase activities for non-complexed cellulase mixtures can be implemented through cellulase engineering based on rational design or directed evolution for each cellulase component enzyme, as well as on the reconstitution of cellulase components. In this paper, we will provide DSM's efforts in cellulase research and developments and focus on limitations. Cellulase improvement strategies based on directed evolution using screening on relevant substrates, screening for higher thermal tolerance based on activity screening approaches such as continuous culture using insoluble cellulosic substrates as a powerful selection tool for enriching beneficial cellulase mutants from the large library. We will illustrate why and how thermostable cellulases are vital for economic delivery of bioproducts from cellulosic biomass using biochemical conversion approach.

  18. Axial flow rotary engine

    SciTech Connect

    Loran, W.; Robinson, M.A.

    1989-07-18

    This paper describes an internal combustion engine. It comprises: a housing having an intake port at one end thereof and an exhaust port at the other end thereof; a compression chamber in the housing near the one end; compressor means in the compression chamber; a compressor transfer port opening through the downstream outlet wall; an expansion chamber in the housing near the other end thereof to receive combusted gases; work means in the expansion chamber driven by expanding, combusted gases; means rotating the compressor outlet wall at the same rotational drive speed as the expander inlet wall; an expansion chamber inlet port opening extending through the upstream inlet wall; a cylindrical combustion chamber block rotatable in the housing intermediate the compression chamber and the expansion chamber; at least two combustion chambers in the block; means rotating the block at a reduced speed relative to the speed of rotation of the compressor outlet wall and the expander inlet wall; means for igniting the charge of compressed gas during the intermediate portion of each revolution of the combustion chamber block. The combustion chambers being substantially hemispherical; the speed of rotation of the compressor outlet wall is in the same ratio to the speed of rotation of the combustion chamber block as the number of combustion chambers in the block is to the number of combustion chambers less one.

  19. Subterranean stress engineering experiments

    SciTech Connect

    Campbell, J.R.; Colgate, S.A.; Wheat, B.M.

    1980-01-01

    The state of stress in a subterranean rock mass has classically been assumed to be constant at best. In soil with a high clay content, preconsolidation and drainage methods can lead to more stable foundation material, but methods for engineering the stresses in large masses of rock are not well known. This paper shows the results from an experiment designed to alter the in situ rock stress field in an oil shale mine. This was done by hydrofracturing the rock by use of a packed-well injection system and then propping the crack open with a thixotropic gel, which slowly hardened to the consistency of cement. Successive hydrofracture and high-pressure grouting resulted in an overstressed region. Well-head injection pressures, surface tilts, injection rates, and subterranean strains were measured and recorded on floppy disk by a Z-80 microprocessor. The results were then transmitted to the large computer system at the Los Alamos Scientific Laboratory (LASL). To put the data in a more useful form, computer-generated movies of the tilts and strains were made by use of computer graphics developed at LASL. The purpose of this paper is to present results from the Single Large Instrumented Test conducted in the Colony Oil Shale Mine near Rifle, Colorado. 13 figures.

  20. Acoustic cooling engine

    DOEpatents

    Hofler, Thomas J.; Wheatley, John C.; Swift, Gregory W.; Migliori, Albert

    1988-01-01

    An acoustic cooling engine with improved thermal performance and reduced internal losses comprises a compressible fluid contained in a resonant pressure vessel. The fluid has a substantial thermal expansion coefficient and is capable of supporting an acoustic standing wave. A thermodynamic element has first and second ends and is located in the resonant pressure vessel in thermal communication with the fluid. The thermal response of the thermodynamic element to the acoustic standing wave pumps heat from the second end to the first end. The thermodynamic element permits substantial flow of the fluid through the thermodynamic element. An acoustic driver cyclically drives the fluid with an acoustic standing wave. The driver is at a location of maximum acoustic impedance in the resonant pressure vessel and proximate the first end of the thermodynamic element. A hot heat exchanger is adjacent to and in thermal communication with the first end of the thermodynamic element. The hot heat exchanger conducts heat from the first end to portions of the resonant pressure vessel proximate the hot heat exchanger. The hot heat exchanger permits substantial flow of the fluid through the hot heat exchanger. The resonant pressure vessel can include a housing less than one quarter wavelength in length coupled to a reservoir. The housing can include a reduced diameter portion communicating with the reservoir. The frequency of the acoustic driver can be continuously controlled so as to maintain resonance.

  1. The Rhythm Engineers | Y-12 National Security Complex

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The Rhythm Engineers The Rhythm Engineers The Rhythm Engineers entertain in front of a drawing of Jackson Square...

  2. Working report and instruction for repairing of three peaces of wings from a 30 kW Riisagermill

    SciTech Connect

    Ethelfeld, J.; Jensen, F.; Kjoller, J.; Lystrup, A.

    1980-01-01

    This report is made to give the owners of Riisager windmills an instruction to make service and repair of the fiber glass wings.

  3. Patient Compliance with Surveillance Following Elective Endovascular Aneurysm Repair

    SciTech Connect

    Godfrey, Anthony D. Morbi, Abigail H. M. Nordon, Ian M.

    2015-10-15

    PurposeIntegral to maintaining good outcomes post-endovascular aneurysm repair (EVAR) is a robust surveillance protocol. A significant proportion of patients fail to comply with surveillance, exposing themselves to complications. We examine EVAR surveillance in Wessex (UK), exploring factors that may predict poor compliance.MethodsRetrospective analysis of 179 consecutive elective EVAR cases [2008–2013] was performed. 167 patients were male, with the age range of 50–95. Surveillance was conducted centrally (tertiary referral trauma centre) and at four spoke units. Surveillance compliance and predictors of non-compliance including age, gender, co-morbid status, residential location and socioeconomic status were analysed for univariate significance.ResultsFifty patients (27.9 %) were non-compliant with surveillance; 14 (8.1 %) had no imaging post-EVAR. At 1 year, 56.1 % (of 123 patients) were compliant. At years 2 and 3, 41.5 and 41.2 % (of 65 and 34 patients, respectively) were compliant. Four years post-EVAR, only one of eight attended surveillance (12.5 %). There were no statistically significant differences in age (p = 0.77), co-morbid status or gender (p = 0.64). Distance to central unit (p = 0.67) and surveillance site (p = 0.56) was non-significant. While there was a trend towards compliance in upper-middle-class socioeconomic groups (ABC1 vs. C1C2D), correlating with >50 % of non-compliant patients living within <10 mile radius of the central unit, overall predictive value was not significant (p = 0.82).ConclusionsCompliance with surveillance post-EVAR is poor. No independent predictor of non-compliance has been confirmed, but socioeconomic status appears to be relevant. There is a worrying drop-off in attendance beyond the first year. This study highlights a problem that needs to be addressed urgently, if we are to maintain good outcomes post-EVAR.

  4. Regenerative rotary displacer Stirling engine

    SciTech Connect

    Isshiki, Naotsugu; Watanabe, Hiroichi; Raggi, L.; Isshiki, Seita; Hirata, Koichi

    1996-12-31

    A few rotary displacer Stirling engines in which the displacer has one gas pocket space at one side and rotates in a main enclosed cylinder, which is heated from one side and cooled from opposite side without any regenerator, have been studied for some time by the authors. The authors tried to improve this engine by equipping it with a regenerator, because without a regenerator, pressure oscillation and efficiency are too small. Here, several types of regenerative rotary displacer piston Stirling engines are proposed. One is the contra-rotating tandem two disc type displacer engine using axial heat conduction through side walls or by heat pipes and another is a single disc type with circulating fluid regenerator or heat pipes. Stirling engines of this new rotary displacer type are thought to attain high speed. Here, experimental results of the original rotary displacer Stirling engine without a regenerator, and one contra-rotating tandem displacer engine with side wall regenerator by axial heat conduction are reported accompanied with a discussion of the results.

  5. Wankel engine for hybrid powertrain

    SciTech Connect

    Butti, A.; Site, V.D.

    1995-12-31

    The Wankel engine is suited to be used to drive hybrid propulsion systems. The main disadvantage of hybrid propulsion systems is the complexity that causes a high weight and large dimensions. For these reason hybrid systems are more suitable for large size vehicle (buses, vans) rather than for small passenger cars. A considerable reduction of hybrid systems weight and dimensions can be obtained using a Wankel rotary engine instead of a conventional engine. The Wankel engine is light, compact, simple, and produces low noise and low vibrations. Therefore a Wankel engine powered hybrid system is suited to be used on small cars. In this paper a 1,000 kg parallel hybrid car with continuously variable transmission and a 6,000 kg series hybrid minibus both equipped with Wankel engines are considered. The Wankel engine works at steady state to minimize fuel consumption and exhaust emissions. The simulation of the behavior of these two vehicles during a ECE + EUDC test cycle is presented in order to evaluate the performances of the systems.

  6. HANFORD SITE LOW EXPOSURE PIPELINE REPAIR USING A NON-METALLIC COMPOSITE SYSTEM

    SciTech Connect

    HUTH RJ

    2009-11-12

    At the Department of Energy, Richland Operations (DOE-RL) Hanford site in eastern Washington, a 350 mm (14 inch) diameter high density polyethylene (HDPE) pump recirculation pipeline failed at a bonded joint adjacent to a radiologically and chemically contaminated groundwater storage basin. The responsible DOE-RL contractor, CH2MHill Plateau Remediation Company, applied a fiberglass reinforced plastic (composite) field repair system to the failed joint. The system was devised specifically for the HDPE pipe repair at the Hanford site, and had not been used on this type of plastic piping previously. This paper introduces the pipe failure scenario, describes the options considered for repair and discusses the ultimate resolution of the problem. The failed pipeline was successfully returned to service with minimal impact on waste water treatment plant operating capacity. Additionally, radiological and chemical exposures to facility personnel were maintained as low as reasonably achievable (ALARA). The repair is considered a success for the near term, and future monitoring will prove whether the repair can be considered for long term service and as a viable alternative for similar piping failures at the Hanford site.

  7. FY2012 Engineering Research & Technology Report

    SciTech Connect

    Lane, Monya

    2014-07-22

    This report documents engineering research, development, and technology advancements performed by LLNL during fiscal year 2012 in the following areas: computational engineering, engineering information systems, micro/nano-devices and structures, and measurement technologies.

  8. Categorical Exclusion Determinations: Energy Technology Engineering Center

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    | Department of Energy Energy Technology Engineering Center Categorical Exclusion Determinations: Energy Technology Engineering Center Categorical Exclusion Determinations issued by Energy Technology Engineering Center. DOCUMENTS AVAILABLE FOR DOWNLOAD No downloads found for this office.

  9. Our Favorite Engineer Jokes | GE Global Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    engineer Owen S.) You think about your thermal heat capacity when picking out a winter coat. (via GE mechanical engineer Ajilli H.) You are awesome. (via GE electrical engineer ...

  10. Interdisciplinary Engineer (Electrical/Electronics/Nuclear/Computer)

    Energy.gov [DOE]

    THIS IS AN INTERDISCIPLINARY POSITION AND MAY BE FILLED WITH ANY OF THE FOLLOWING OCCUPATIONS: Electrical Engineer, GS-0850-13 Electronics Engineer, GS-0855-13 Nuclear Engineer, GS-0840-13 Computer...

  11. Interdisciplinary Engineer (Electrical/Electronics/Nuclear/Computer)

    Energy.gov [DOE]

    THIS IS AN INTERDISCIPLINARY POSITION AND MAY BE FILLED WITH ANY OF THE FOLLOWING OCCUPATIONS: Electrical Engineer, GS-0850-12 Electronics Engineer, GS-0855-12 Nuclear Engineer, GS-0840-12 Computer...

  12. Self-pressurizing Stirling engine (Patent) | DOEPatents

    Office of Scientific and Technical Information (OSTI)

    Self-pressurizing Stirling engine Title: Self-pressurizing Stirling engine A solar thermal powered aircraft powered by heat energy from the sun. A heat engine, such as a Stirling ...

  13. Chapter 48 - Value Engineering | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    8 - Value Engineering Chapter 48 - Value Engineering PDF icon 48ValueEngineering0.pdf More Documents & Publications Audit Report: OAS-L-07-08 Emerging Lighting Technology...

  14. Enabling High Efficiency Ethanol Engines

    SciTech Connect

    Szybist, J.; Confer, K.

    2011-03-01

    Delphi Automotive Systems and ORNL established this CRADA to explore the potential to improve the energy efficiency of spark-ignited engines operating on ethanol-gasoline blends. By taking advantage of the fuel properties of ethanol, such as high compression ratio and high latent heat of vaporization, it is possible to increase efficiency with ethanol blends. Increasing the efficiency with ethanol-containing blends aims to remove a market barrier of reduced fuel economy with E85 fuel blends, which is currently about 30% lower than with petroleum-derived gasoline. The same or higher engine efficiency is achieved with E85, and the reduction in fuel economy is due to the lower energy density of E85. By making ethanol-blends more efficient, the fuel economy gap between gasoline and E85 can be reduced. In the partnership between Delphi and ORNL, each organization brought a unique and complementary set of skills to the project. Delphi has extensive knowledge and experience in powertrain components and subsystems as well as overcoming real-world implementation barriers. ORNL has extensive knowledge and expertise in non-traditional fuels and improving engine system efficiency for the next generation of internal combustion engines. Partnering to combine these knowledge bases was essential towards making progress to reducing the fuel economy gap between gasoline and E85. ORNL and Delphi maintained strong collaboration throughout the project. Meetings were held regularly, usually on a bi-weekly basis, with additional reports, presentations, and meetings as necessary to maintain progress. Delphi provided substantial hardware support to the project by providing components for the single-cylinder engine experiments, engineering support for hardware modifications, guidance for operational strategies on engine research, and hardware support by providing a flexible multi-cylinder engine to be used for optimizing engine efficiency with ethanol-containing fuels.

  15. Applied engineering fundamentals: The transition from novice to engineering manager

    SciTech Connect

    Murawski, M.N.; Tomchin, E.M. )

    1992-01-01

    This paper describes the development and implementation of Applied Engineering Fundamentals, a course designed for newly graduated engineers and scientists serving as technical interns within the US Department of Energy (DOE). As specialists with varying undergraduate and graduate degrees, interns need further training to prepare them for the multidisciplinary environments they will encounter as they become engineering managers. This course is designed to build on individuals strengths in diverse engineering and scientific disciplines, provide instruction in less familiar disciplines, and develop skills in integrating multiple disciplines to solve real-world problems related to nuclear facilities. The course balances systems thinking with state-of-the-art approaches to curriculum development to provide training in technical content and to foster development of professional skills.

  16. Fuel Additive Strategies for Enhancing the Performance of Engines...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Additive Strategies for Enhancing the Performance of Engines and Engine Oils Fuel Additive Strategies for Enhancing the Performance of Engines and Engine Oils 2003 DEER Conference ...

  17. Sandia Energy - Large Eddy Simulation (LES) of Engines

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Large Eddy Simulation (LES) of Engines Home Transportation Energy Predictive Simulation of Engines Engine Combustion Modeling Large Eddy Simulation (LES) of Engines Large Eddy...

  18. Mechanical Design Engineer (MED) | Princeton Plasma Physics Lab

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Design Engineer (MED) Department: Engineering Supervisor(s): Douglas Loesser Staff: ENG 3 ... Its Mechanical Engineering Division (MED) is seeking to hire a Mechanical Engineer. The ...

  19. Los Alamos engineer selected to participate in NAE's 2012 "Frontiers...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Moody to participate in "Frontiers of Engineering" Los Alamos engineer selected to participate in NAE's 2012 "Frontiers of Engineering" symposium Engineers between 30 to 45 who are ...

  20. Optical-Mechanical Engineer | Princeton Plasma Physics Lab

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Optical-Mechanical Engineer Department: Engineering Supervisor(s): Bill Blanchard Staff: ... We are seeking an Optical-Mechanical Engineer to join the Diagnostics Engineering Team in ...

  1. High Efficiency Clean Combustion Engine Designs for Gasoline...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engine Designs for Gasoline and Diesel Engines High Efficiency Clean Combustion Engine Designs for Gasoline and Diesel Engines 2009 DOE Hydrogen Program and Vehicle Technologies ...

  2. Metabolic Pathways and Metabolic Engineering

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Metabolic pathways and metabolic engineering Adam Guss Genetic and Metabolic Engineer Oak Ridge National Laboratory Sept 25, 2013 2 Managed by UT-Battelle for the U.S. Department of Energy Metabolic engineering of Clostridium thermocellum for cellulosic ethanol production NAD(P)H NAD(P) + Acetyl-P 2 H + NAD + NAD + NADH NADH P i CoA ADP ATP L-Lactic Acid Acetic Acid Ethanol NADH NAD + NADH NAD + H 2 2 H + Fd oxidized Fd reduced Formic acid H 2 Cellulose Acetaldehyde Pyruvate Acetyl-CoA

  3. Rotating head and piston engine

    SciTech Connect

    Gomm, T.J.; Messick, N.C.

    1992-07-21

    This patent describes a rotary piston combustion engine. It comprises a housing means, an engine block housing a single toroidal bore, a piston carrier ring spaced outwardly along the entire perimeter of the toroidal bore with at least one finger extending inwardly for piston attachment, a power transfer cylinder, a power output shaft, an auxiliary shaft with driven gearing means meshing with the driving gearing means, a rotating head with windows for piston passage, a trapezoidal porting means in the engine block and in the rotating head, an exhaust port means.

  4. The Science DMZ Eli Dart, Network Engineer ESnet Engineering Group

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Science DMZ Eli Dart, Network Engineer ESnet Engineering Group Winter 2011 Joint Techs Clemson, SC February 1, 2011 Lawrence Berkeley National Laboratory U.S. Department of Energy | Office of Science Overview Science Needs * Data tsunami, new science processes * Current problems * Consequences What is important and how to accomplish it * Important aspects of the network for users * Science DMZ architecture Security Concerns Recap Resources Lawrence Berkeley National Laboratory U.S. Department of

  5. Marathon Engineering Diversity PhD Fellowship

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Marathon Engineering Diversity PhD Fellowship The Marathon Engineering Diversity PhD Fellowship Program was established to encourage outstanding graduate students, especially women and minorities, to pursue the doctorate in engineering and encourage engineering education as a profession. The prospective Ph.D. candidate should be a US citizen or permanent resident and seeking a degree in fields of interest to Marathon Oil Company-chemical engineering, mechanical engineering, electrical

  6. Materials Engineering Research Facility | Argonne National Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineering Research Facility Materials Engineering Research Facility exterior 1 of 11 Materials Engineering Research Facility exterior With the Materials Engineering Research Facility's state-of-the-art labs and equipment, Argonne researchers can safely scale up materials from the research bench for commercial testing. Photo courtesy Argonne National Laboratory. Materials Engineering Research Facility exterior 1 of 11 Materials Engineering Research Facility exterior With the Materials

  7. Sandia National Laboratories: Careers: Systems Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Systems Engineering Systems engineering robot Systems engineers contribute to every aspect that impacts how a product is conceived, developed, and deployed into the field. Systems engineers at Sandia have the opportunity to contribute technically and programmatically in the development of our many breakthrough products. Systems engineers have responsibilities across the entire product life cycle, giving them a unique, hands-on work experience. Systems engineers work with business development

  8. Co-Optimization of Fuels and Engines

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Optimization of Fuels and Engines John Farrell BioEnergy 2016 July 14, 2016 Fuel and Engine Co-Optimization o What fuel properties maximize engine performance? o How do engine parameters affect efficiency? o What fuel and engine combinations are sustainable, affordable, and scalable? Goal: better fuels and better vehicles sooner 30% per vehicle petroleum reduction via efficiency and displacement efficiency and displacement Governing Co-Optima hypotheses: There are engine architectures and

  9. Lab computer model boosts engine efficiency

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    LANL computer model boosts engine efficiency Lab computer model boosts engine efficiency The KIVA model has been instrumental in helping researchers and manufacturers understand combustion processes, accelerate engine development and improve engine design and efficiency. September 25, 2012 KIVA simulation of an experimental engine with DOHC quasi-symmetric pent-roof combustion chamber and 4 valves. KIVA simulation of an experimental engine with DOHC quasi-symmetric pent-roof combustion chamber

  10. Engine Research Facility | Argonne National Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engine Research Facility Argonne's Engine Research Facility allows scientists and engineers to study in-cylinder combustion and emissions under realistic operating conditions. The facility's engines range in size from automobile- to locomotive-sized, as well as stationary electric power production engines. The facility is used to discover and evaluate new technologies to determine their technical feasibility and commercial viability. In addition, Argonne researchers use the facility's engines to

  11. Co-Optimization of Fuels and Engines

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Optimization of Fuels and Engines John Farrell SAE High Efficiency Internal Combustion Engine Symposium April 11, 2016 2 Goal: better fuels and better vehicles sooner Fuel and Engine Co-Optimization o What fuel properties maximize engine performance? o How do engine parameters affect efficiency? o What fuel and engine combinations are sustainable, affordable, and scalable? 3 30% per vehicle petroleum reduction via efficiency and displacement source: EIA 2014 reference case Fuel selection

  12. Engineer, Sandia National Laboratories | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Engineer, Sandia National Laboratories Clifford Ho Clifford Ho February 2010 Asian American Engineer of the Year Clifford Ho, a Sandia engineer, has been selected by the Chinese Institute of Engineers - USA to receive the Asian American Engineer of the Year Award. The honor is presented each year to the nation's most outstanding Asian American engineers and scientists who make significant, lasting and global contributions to the nation. Ho was recognized for his

  13. Software Engineer (Scientific Application) | Princeton Plasma...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Software Engineer (Scientific Application) Department: Information Technology Staff: ENG ... This Scientific Applications Software Engineer position is with the Controls and Data ...

  14. PHEV Engine and Aftertreatment Model Development | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    PHEV Engine and Aftertreatment Model Development Advanced PHEV Engine Systems and Emissions Control Modeling and Analysis System Simulations of Hybrid Electric Vehicles with Focus ...

  15. Microfluidic ultrasonic particle separators with engineered node...

    Office of Scientific and Technical Information (OSTI)

    particle separators with engineered node locations and geometries Citation Details In-Document Search Title: Microfluidic ultrasonic particle separators with engineered node ...

  16. Advanced Natural Gas Reciprocating Engines (ARES) - Presentation...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cummins, Inc., June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Cummins, Inc., June 2011 Presentation on Advanced Natural Gas Reciprocating Engines ...

  17. Advanced Natural Gas Reciprocating Engines (ARES)

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Efficiency is key 3 State of the Art Pre-ARES Engines Characterized by the following: Limited investment in natural gas engines, based on derivatives of larger volume ...

  18. Azita Emami: Department of Electrical Engineering, California...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Azita Emami: Department of Electrical Engineering, California Institute of Technology Dec 4, 2013 | 4:00 PM - 5:00 PM Azita Emami Professor, Department of Electrical Engineering, ...

  19. Sandian Selected for Outstanding Young Engineer Award

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... The Albuquerque Section of the Institute of Electrical and Electronics Engineers (IEEE) ... Award for his outstanding con-tributions to the electrical engineering profession. ...

  20. Bicon Namibia Consulting Engineers | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Name: Bicon Namibia Consulting Engineers Place: Windhoek, Namibia Sector: Wind energy Product: Windhoek-based engineering consultancy firm. Provides design and supervision of...

  1. JFE Engineering Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Inc Jump to: navigation, search Name: JFE Engineering Inc Place: Tokyo, Tokyo, Japan Product: JFE Engineering is a business company responsible for environmentally...

  2. advanced combustion engines | netl.doe.gov

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Advanced Combustion Engines Improving the efficiency of internal combustion engines is one of the most promising and cost-effective near- to mid-term approaches to increasing...

  3. AVTA: Hydrogen Internal Combustion Engine Vehicle Specifications...

    Energy Saver

    Hydrogen Internal Combustion Engine Vehicle Specifications and Test Procedures AVTA: Hydrogen Internal Combustion Engine Vehicle Specifications and Test Procedures HICEV Technical ...

  4. Enfocus Engineering Corporation | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Enfocus Engineering Corporation Jump to: navigation, search Name: Enfocus Engineering Corporation Place: Sunnyvale, California Zip: 94087 Product: Enfocus is an early stage company...

  5. Beijing Haohua Rivers International Water Engineering Consulting...

    OpenEI (Open Energy Information) [EERE & EIA]

    Haohua Rivers International Water Engineering Consulting Co Ltd Jump to: navigation, search Name: Beijing Haohua Rivers International Water Engineering Consulting Co.Ltd. Place:...

  6. Fagen Engineering LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Fagen Engineering LLC Jump to: navigation, search Name: Fagen Engineering LLC Place: Granite Falls, Minnesota Zip: 56241 Product: Designs and builds ethanol production plants and...

  7. Corporate Systems Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Systems Engineering Jump to: navigation, search Name: Corporate Systems Engineering Place: Indianapolis, Indiana Product: Indiana-based energy management company. Coordinates:...

  8. Caledonian College of Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Caledonian College of Engineering Jump to: navigation, search Name: Caledonian College of Engineering Place: Oman Product: The College has many labs and workshops for various...

  9. Omnion Power Engineering Corporation | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Omnion Power Engineering Corporation Jump to: navigation, search Name: Omnion Power Engineering Corporation Place: Walworth County, Wisconsin Zip: 53120 Product: Wisconsin-based...

  10. Functional Design Engineering Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Functional Design Engineering Inc Jump to: navigation, search Name: Functional Design Engineering Inc Region: United States Sector: Marine and Hydrokinetic Website:...

  11. Geothermal Engineering Ltd | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Engineering Ltd Jump to: navigation, search Name: Geothermal Engineering Ltd. Place: London, United Kingdom Zip: SW1V 3EL Sector: Geothermal energy Product: Cornwall-based company...

  12. Ruby Canyon Engineering Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Ruby Canyon Engineering Inc Jump to: navigation, search Name: Ruby Canyon Engineering Inc Place: Grand Junction, Colorado Zip: 81506 Sector: Services Product: String representation...

  13. China Nuclear Engineering Construction Corporation CNEC | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    Nuclear Engineering Construction Corporation CNEC Jump to: navigation, search Name: China Nuclear Engineering & Construction Corporation (CNEC) Place: Beijing, China Zip: 100840...

  14. Diesel Engines: Environmental Impact and Control | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Environmental Impact and Control Diesel Engines: Environmental Impact and Control 2002 ... More Documents & Publications Cleaning Up Diesel Engines DIesel Emission Control ...

  15. Systems Engineering; 2010 Geothermal Technology Program Peer...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engineering; 2010 Geothermal Technology Program Peer Review Report Systems Engineering; 2010 Geothermal Technology Program Peer Review Report DOE 2010 Geothermal Technologies ...

  16. Voluntary Protection Program Onsite Review, Facility Engineering...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Facility Engineering Services KCP, LLC - September 2012 Voluntary Protection Program Onsite Review, Facility Engineering Services KCP, LLC - September 2012 September 2012 ...

  17. Aluminum alloys for satellite boxes : engineering guidelines...

    Office of Scientific and Technical Information (OSTI)

    Aluminum alloys for satellite boxes : engineering guidelines for obtaining adequate ... Title: Aluminum alloys for satellite boxes : engineering guidelines for obtaining adequate ...

  18. Electromechanical Engineering Consulting Group ECG | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Electromechanical Engineering Consulting Group ECG Jump to: navigation, search Name: Electromechanical Engineering Consulting Group (ECG) Place: San Jose, Costa Rica Zip: 1521-1000...

  19. Optimization of Advanced Diesel Engine Combustion Strategies...

    Energy.gov [DOE] (indexed site)

    Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel Engine Combustion Strategies Use of Low Cetane Fuel to Enable Low Temperature ...

  20. A Roadmap for Engineering Piezoelectricity in Graphene

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Roadmap for Engineering Piezoelectricity in Graphene A Roadmap for Engineering Piezoelectricity in Graphene Doping this 'Miracle Material' May Lead to New Array of Nanoscale ...

  1. Design, Performance, and Sustainability of Engineered Covers...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Design, Performance, and Sustainability of Engineered Covers for Uranium Mill Tailings Design, Performance, and Sustainability of Engineered Covers for Uranium Mill Tailings ...

  2. Software Engineer (CODAC) | Princeton Plasma Physics Lab

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Software Engineer (CODAC) Department: Information Technology Supervisor(s): Bill Davis ... This Software Engineer position is with the CODAC group, responsible for the development ...

  3. ALS Ceramics Materials Research Advances Engine Performance

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ALS Ceramics Materials Research Advances Engine Performance ALS Ceramics Materials Research Advances Engine Performance Print Thursday, 27 September 2012 00:00 ritchie ceramics...

  4. Nuclear Engineering Science Laboratory Synthesis program accepting...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Nuclear Engineering Science Laboratory Synthesis program accepting applications for ... FOR IMMEDIATE RELEASE Nov. 11, 2015 FY16-06 OAK RIDGE, Tenn.-The Nuclear Engineering ...

  5. ORISE: Nuclear engineering graduates decrease in 2009

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Nuclear engineering degrees decrease, enrollments increase in 2009 ORISE report shows unexpected decline in 2009 in nuclear engineering degrees but largest enrollment since mid ...

  6. Nuclear Engineering Enrollments and Degrees, 2011

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    nuclear engineering or in an option program equivalent to a major. Thirty-two academic programs reported having nuclear engineering programs during 2011, and data was received from ...

  7. Engine Waste Heat Recovery Concept Demonstration | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    in a Small Engine Test Cell for Enhanced Kinetic Engine Modeling Accuracy A Thermoelectric Generator with an Intermediate Heat Exchanger for Automotive Waste Heat Recovery ...

  8. LANL computer model boosts engine efficiency

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    LANL computer model boosts engine efficiency LANL computer model boosts engine efficiency The KIVA model has been instrumental in helping researchers and manufacturers understand...

  9. NETL Science & Engineering Ambassadors Guide Next Generation...

    Office of Environmental Management (EM)

    Science & Engineering Ambassadors Guide Next Generation of Energy Decision-Makers NETL Science & Engineering Ambassadors Guide Next Generation of Energy Decision-Makers March 7, ...

  10. Carbon Cycle Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Cycle Engineering Jump to: navigation, search Name: Carbon Cycle Engineering Address: 13725 Dutch Creek Road Place: Athens, Ohio Zip: 45701 Sector: Biofuels, Biomass, Efficiency,...

  11. ARM - ARM Engineering and Operations Contacts

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Send ARM Engineering and Operations Contacts Technical Coordination Office Person Role Responsible Area PhoneEmail Jim Mather ARM Technical DirectorEngineering Manager...

  12. Laser Light Engines | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Laser Light Engines Jump to: navigation, search Name: Laser Light Engines Place: Salem, New Hampshire Zip: NH 03079 Sector: Efficiency Product: Salem-based, designs, develops and...

  13. LANL engineers help New Mexico small businesses

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineers help New Mexico small businesses LANL engineers help New Mexico small businesses Charles Lucero and G. Loren Toole received Principal Investigator Excellence (PIE) Awards ...

  14. Michigan: General Motors Optimizes Engine Valve Technology |...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Michigan: General Motors Optimizes Engine Valve Technology Michigan: General Motors Optimizes Engine Valve Technology November 8, 2013 - 12:00am Addthis An EERE-supported effort to ...

  15. Power Engineers Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Power Engineers Inc Jump to: navigation, search Name: Power Engineers Inc. Place: Hailey, Idaho Zip: 83333 Sector: Geothermal energy, Solar Product: Idaho-based EPC contractor...

  16. Performance Engineering Research Center and RECOVERY. Performance...

    Office of Scientific and Technical Information (OSTI)

    Performance Engineering Research Center and RECOVERY. Performance Engineering Research Institution SciDAC-e Augmentation. Performance enhancement Citation Details In-Document ...

  17. Tecno Proget Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Name: Tecno Proget Engineering Place: Ragusa, Italy Zip: 97100 Sector: Solar Product: Italian engineering and construction service firm, building a solar plant in Santa Croce...

  18. PMB Engineering Srl | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    navigation, search Name: PMB Engineering Srl Place: Monza, Italy Zip: 20052 Product: Italian construction and engineering contractor acquired by Greentech Energy in August 2007....

  19. HQ Engineering Srl | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    navigation, search Name: HQ Engineering Srl Place: Milano, Italy Zip: 20124 Product: Italian engineering company. Coordinates: 45.468945, 9.18103 Show Map Loading map......

  20. Shafir Civil Marine Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Engineering Jump to: navigation, search Name: Shafir Civil & Marine Engineering Place: Israel Sector: Services Product: Services include infrastructure works, contracting, bridge...

  1. Synchrophasor Engineering Education Program Project Summaries...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Synchrophasor Engineering Education Program Project Summaries Available Synchrophasor Engineering Education Program Project Summaries Available July 9, 2014 - 10:48am Addthis On...

  2. Engineering | National Nuclear Security Administration | (NNSA)

    National Nuclear Security Administration (NNSA)

    Engineering The Sandia Field Office's Engineering office performs oversight and contract administration activities for the facilities, projects and environmental programs at Sandia National Laboratories

  3. Automatic coke oven heating control system at Burns Harbor for normal and repair operation

    SciTech Connect

    Battle, E.T.; Chen, K.L.

    1997-12-31

    An automatic heating control system for coke oven batteries was developed in 1985 for the Burns Harbor No. 1 battery and reported in the 1989 Ironmaking Conference Proceedings. The original system was designed to maintain a target coke temperature at a given production level under normal operating conditions. Since 1989, enhancements have been made to this control system so that it can also control the battery heating when the battery is under repair. The new control system has improved heating control capability because it adjusts the heat input to the battery in response to anticipated changes in the production schedule. During a recent repair of this 82 oven battery, the pushing schedule changed from 102 ovens/day to 88 ovens/day, then back to 102 ovens/day, then to 107 ovens/day. During this repair, the control system was able to maintain the coke temperature average standard deviation at 44 F, with a maximum 75 F.

  4. Evaluation of bisphenol E cyanate ester for the resin-injection repair of advanced composites

    SciTech Connect

    Lio, Wilber Yaote

    2009-12-01

    This thesis is a compilation of a general introduction and literature review that ties together the subsequent chapters which consist of two journal articles that have yet to be submitted for publication. The overall topic relates to the evaluation and application of a new class of cyanate ester resin with unique properties that lend it applicable to use as a resin for injection repair of high glass transition temperature polymer matrix composites. The first article (Chapter 2) details the evaluation and optimization of adhesive properties of this cyanate ester and alumina nanocomposites under different conditions. The second article (Chapter 3) describes the development and evaluation of an injection repair system for repairing delaminations in polymer matrix composites.

  5. A survey of repair practices for nuclear power plant containment metallic pressure boundaries

    SciTech Connect

    Oland, C.B.; Naus, D.J.

    1998-05-01

    The Nuclear Regulatory Commission has initiated a program at the Oak Ridge National Laboratory to provide assistance in their assessment of the effects of potential degradation on the structural integrity and leaktightness of metal containment vessels and steel liners of concrete containments in nuclear power plants. One of the program objectives is to identify repair practices for restoring metallic containment pressure boundary components that have been damaged or degraded in service. This report presents issues associated with inservice condition assessments and continued service evaluations and identifies the rules and requirements for the repair and replacement of nonconforming containment pressure boundary components by welding or metal removal. Discussion topics include base and welding materials, welding procedure and performance qualifications, inspection techniques, testing methods, acceptance criteria, and documentation requirements necessary for making acceptable repairs and replacements so that the plant can be returned to a safe operating condition.

  6. Clean and Efficient Diesel Engine

    SciTech Connect

    2010-12-31

    Task 1 was to design study for fuel-efficient system configuration. The objective of task 1 was to perform a system design study of locomotive engine configurations leading to a 5% improvement in fuel efficiency. Modeling studies were conducted in GT-Power to perform this task. GT-Power is an engine simulation tool that facilitates modeling of engine components and their system level interactions. It provides the capability to evaluate a variety of engine technologies such as exhaust gas circulation (EGR), variable valve timing, and advanced turbo charging. The setup of GT-Power includes a flexible format that allows the effects of variations in available technologies (i.e., varying EGR fractions or fuel injection timing) to be systematically evaluated. Therefore, development can be driven by the simultaneous evaluation of several technology configurations.

  7. Human Factors Engineering Analysis Tool

    Energy Science and Technology Software Center

    2002-03-04

    HFE-AT is a human factors engineering (HFE) software analysis tool (AT) for human-system interface design of process control systems, and is based primarily on NUREG-0700 guidance.

  8. Discover E for budding engineers

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The event coincides with National Engineers Week and is free with no registration required. Boy and Girl Scouts can even use the activities to help earn merit badges. Last year's ...

  9. Next Generation Diesel Engine Control

    Energy.gov [DOE]

    Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  10. Rotary-reciprocal combustion engines

    SciTech Connect

    Blount, D.H.

    1992-10-06

    This patent describes an internal combustion engine of the rotary-reciprocal type. It comprises a housing formed with a peripheral wall; a rotor; and a shaft for the rotor.

  11. (Nuclear power engineering in space)

    SciTech Connect

    Cooper, R.H. Jr.

    1990-06-18

    The principal purpose of this trip was to participate in the Anniversary Specialist Conference on Nuclear Power Engineering in Space hosted by the USSR Ministry of Atomic Power Engineering and Industry. The conference was held in Obninsk, USSR. A secondary purpose of the trip was to meet with the French Commissariat A L'Energie Atomique in Paris regarding the status of their space power program.

  12. Vortex Characterization for Engineering Applications

    SciTech Connect

    Jankun-Kelly, M; Thompson, D S; Jiang, M; Shannahan, B; Machiraju, R

    2008-01-30

    Realistic engineering simulation data often have features that are not optimally resolved due to practical limitations on mesh resolution. To be useful to application engineers, vortex characterization techniques must be sufficiently robust to handle realistic data with complex vortex topologies. In this paper, we present enhancements to the vortex topology identification component of an existing vortex characterization algorithm. The modified techniques are demonstrated by application to three realistic data sets that illustrate the strengths and weaknesses of our approach.

  13. ABB Combustion Engineering nuclear technology

    SciTech Connect

    Matzie, R.A.

    1994-12-31

    The activities of ABB Combustion Engineering in the design and construction of nuclear systems and components are briefly reviewed. ABB Construction Engineering continues to improve the design and design process for nuclear generating stations. Potential improvements are evaluated to meet new requirements both of the public and the regulator, so that the designs meet the highest standards worldwide. Advancements necessary to meet market needs and to ensure the highest level of performance in the future will be made.

  14. Engineering | Princeton Plasma Physics Lab

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineering Subscribe to RSS - Engineering This function manages the design, fabrication and operation of PPPL experimental devices, and oversees the Laboratory's facilities and its electrical and infrastructure systems. PPPL senior physicist Wei-li Lee honored at week-long symposium Physicists from around the world gathered at the University of California, Irvine this past summer for a symposium in honor of Wei-li Lee, a senior physicist at the U.S. Department of Energy's (DOE) Princeton Plasma

  15. Encryption Engine - Energy Innovation Portal

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Advanced Materials Advanced Materials Find More Like This Return to Search Encryption Engine Sandia National Laboratories Contact SNL About This Technology Publications: PDF Document Publication Market Sheet (885 KB) Technology Marketing SummaryIn the past, traditional encryption engines utilized a mode of encryption that was vulnerable to certain attacks and not capable of running at full capacity. Sandia has created an invention that provides a solution to the problem of keeping an encryption

  16. Engineering Research | Argonne National Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineering Research Components of an "18650" lithium-ion prototype cell using advanced battery materials. Components of an "18650" lithium-ion prototype cell using advanced battery materials. Engineering Research is a multi-disciplinary group focused on demonstrating the feasibility of advanced electrochemical energy storage materials and systems in real world applications. It combines capabilities in electrochemical transport modeling, techno-economic modeling, materials

  17. Computational Sciences and Engineering Division

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The Computational Sciences and Engineering Division is a major research division at the Department of Energy's Oak Ridge National Laboratory. CSED develops and applies creative information technology and modeling and simulation research solutions for National Security and National Energy Infrastructure needs. The mission of the Computational Sciences and Engineering Division is to enhance the country's capabilities in achieving important objectives in the areas of national defense, homeland

  18. Bellcrank mechanisms for Stirling engines

    SciTech Connect

    Senft, J.R.; Senft, V.J.

    1996-12-31

    This paper describes a family of linkage drive systems for Stirling engines containing several new members. These mechanisms are adaptable to all three configurations of Stirling engine, impose minimal side loads on pistons and displacer rods, and include compact forms suitable for pressurized high performance engines. This group of drive systems is generated by a simple common scheme. Near sinusoidal motion is taken from a crankshaft carrying a single crankpin by two connecting rods each driving a bellcrank. The stationary pivots of the bellcranks are located so that their oscillatory motion has the phase angle separation required between the piston and displacer. The bellcranks are further configured to bring the third pin motion to a location suitable for coupling with the piston or displacer of the engine in a way which minimizes side loading. The paper presents a number of new linkage drives from the dual bellcrank family and indicates how they are embodied in beta and alpha type Stirling engines. The paper includes a design for a small multipurpose engine incorporating one of the subject mechanisms.

  19. Rebirth of the stirling engine

    SciTech Connect

    Sternlicht, B.

    1983-01-01

    Revived interest in external combustion is attributed to such advantages as ability to use a variety of energy sources, high system efficiency and low pollution. A relatively high weight-power ratio, which is undesirable in propulsion applications, and manufacturing costs that have not yet been refined are the two remaining technological challenges. A diagram explaining the Stirling cycle is presened. It is revealed that the first-generation automotive engine (MOD I), which is now being tested, has efficiency in most of the operating ranges that exceeds the analytical predictions that were incorporated into the design. The engine's power density has been improved by 35%. MOD II, which is the second-generation engine and represents the conclusion of the program in 1985, is expected to have 50% fuel economy improvement. This is considerably greater than the 30% currently specified, and the engine weight is expected to be about 5 lb/hp, which is comparable to the weight of diesel engines. It is also expected to meet or surpass both the emission and noise standards. It is concluded that whether the automotive industry will choose the Stirling engine or the gas turbine as its prime mover will depend on a variety of factors, of which technology is only one.

  20. Protein design for pathway engineering

    SciTech Connect

    Eriksen, DT; Lian, JZ; Zhao, HM

    2014-02-01

    Design and construction of biochemical pathways has increased the complexity of biosynthetically-produced compounds when compared to single enzyme biocatalysis. However, the coordination of multiple enzymes can introduce a complicated set of obstacles to overcome in order to achieve a high titer and yield of the desired compound. Metabolic engineering has made great strides in developing tools to optimize the flux through a target pathway, but the inherent characteristics of a particular enzyme within the pathway can still limit the productivity. Thus, judicious protein design is critical for metabolic and pathway engineering. This review will describe various strategies and examples of applying protein design to pathway engineering to optimize the flux through the pathway. The proteins can be engineered for altered substrate specificity/selectivity, increased catalytic activity, reduced mass transfer limitations through specific protein localization, and reduced substrate/product inhibition. Protein engineering can also be expanded to design biosensors to enable high through-put screening and to customize cell signaling networks. These strategies have successfully engineered pathways for significantly increased productivity of the desired product or in the production of novel compounds. (C) 2013 Elsevier Inc. All rights reserved.