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Numerical modeling of water injection into vapor-dominatedgeothermal reservoirs

Description: Water injection has been recognized as a powerful techniquefor enhancing energy recovery from vapor-dominated geothermal systemssuch as The Geysers. In addition to increasing reservoir pressures,production well flow rates, and long-term sustainability of steamproduction, injection has also been shown to reduce concentrations ofnon-condensible gases (NCGs) in produced steam. The latter effectimproves energy conversion efficiency and reduces corrosion problems inwellbores and surface lines.This r… more
Date: November 6, 2006
Creator: Pruess, Karsten
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Use of the GranuFlow Process in Coal Preparation Plants to Improve Energy Recovery and Reduce Coal Processing Wastes

Description: With the increasing use of screen-bowl centrifuges in today's fine coal cleaning circuits, a significant amount of low-ash, high-Btu coal can be lost during the dewatering step due to the difficulty in capturing coal of this size consist (< 100 mesh or 0.15mm). The GranuFlow{trademark} technology, developed and patented by an in-house research group at DOE-NETL, involves the addition of an emulsified mixture of high-molecular-weight hydrocarbons to a slurry of finesized coal before cleaning … more
Date: December 31, 2005
Creator: Shirey, Glenn A. & Akers, David J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Numerical studies of fluid-rock interactions in EnhancedGeothermal Systems (EGS) with CO2 as working fluid

Description: There is growing interest in the novel concept of operating Enhanced Geothermal Systems (EGS) with CO{sub 2} instead of water as heat transmission fluid. Initial studies have suggested that CO{sub 2} will achieve larger rates of heat extraction, and can offer geologic storage of carbon as an ancillary benefit. Fluid-rock interactions in EGS operated with CO{sub 2} are expected to be vastly different in zones with an aqueous phase present, as compared to the central reservoir zone with anhydrous… more
Date: January 17, 2008
Creator: Xu, Tianfu; Pruess, Karsten & Apps, John
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Lean NOx Trap Catalysis for Lean Natural Gas Engine Applications

Description: Distributed energy is an approach for meeting energy needs that has several advantages. Distributed energy improves energy security during natural disasters or terrorist actions, improves transmission grid reliability by reducing grid load, and enhances power quality through voltage support and reactive power. In addition, distributed energy can be efficient since transmission losses are minimized. One prime mover for distributed energy is the natural gas reciprocating engine generator set. Nat… more
Date: September 1, 2007
Creator: Parks, James E., II; Storey, John Morse; Theiss, Timothy J.; Ponnusamy, Senthil; Ferguson, Harley Douglas; Williams, Aaron M. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ferrite HOM Absorber for the RHIC ERL

Description: A superconducting Energy Recovery Linac is under construction at Brookhaven National Laboratory to serve as test bed for RHIC upgrades. The damping of higher-order modes in the superconducting five-cell cavity for the Energy-Recovery linac at RHIC is performed exclusively by two ferrite absorbers. The ferrite properties have been measured in ferrite-loaded pill box cavities resulting in the permeability values given by a first-order Debye model for the tiled absorber structure and an equivalent… more
Date: October 1, 2008
Creator: Hahn,H.; Choi, E.M. & Hammons, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Opportunities for TeV Laser Acceleration

Description: A set of ballpark parameters for laser, plasma, and accelerator technologies that define for electron energies reaching as high as TeV are identified. These ballpark parameters are carved out from the fundamental scaling laws that govern laser acceleration, theoretically suggested and experimentally explored over a wide range in the recent years. In the density regime on the order of 10{sup 16} cm{sup -3}, the appropriate laser technology, we find, matches well with that of a highly efficient h… more
Date: June 2, 2008
Creator: Kando, M.; Kiriyama, H.; Koga, J. K.; Bulanov, S.; Chao, A. W.; Esirkepov, T. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Spatial resolution limits for synchrotron-based spectromicroscopy in the mid- and near-infrared

Description: Spatial resolution tests were performed on beamline 1.4.4 at the Advanced Light Source in Berkeley, CA, USA, a third-generation synchrotron light source. This beamline couples the high-brightness synchrotron source to a Thermo-Electron Continumum XL infrared microscope. Two types of resolution tests were performed in both the mid-IR and near-IR. The results are compared with a diffraction-limited spot size theory. At shorter near-IR wavelengths the experimental results begin to deviate from dif… more
Date: January 12, 2008
Creator: Levenson, Erika; Lerch, Philippe & Martin, Michael C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Enhanced Geothermal Systems (EGS) comparing water with CO2 as heattransmission fluids

Description: This paper summarizes our research to date into operatingEGS with CO2. Our modeling studies indicate that CO2 would achieve morefavorable heat extraction than aqueous fluids. The peculiarthermophysicalproperties of CO2 give rise to unusual features in the dependence ofenergy recovery on thermodynamic conditions and time. Preliminarygeochemical studies suggest that CO2 may avoid unfavorable rock-fluidinteractions that have been encountered in water-basedsystems. To morefully evaluate the potenti… more
Date: November 1, 2007
Creator: Pruess, Karsten
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of a High Latent Effectiveness Energy Recovery Ventilator with Integration into Rooftop Package Equipment

Description: This Final Report covers the Cooperative Program carried out to design and optimize an enhanced flat-plate energy recovery ventilator and integrate it into a packaged unitary (rooftop) air conditioning unit. The project objective was to optimize the design of a flat plate energy recovery ventilator (ERV) core that compares favorably to flat plate air-to-air heat exchanger cores on the market and to cost wise to small enthalpy wheel devices. The benefits of an integrated unit incorporating an en… more
Date: March 1, 2006
Creator: Dobbs, Gregory M.; Lemcoff, Norberto O.; Cogswell, Frederick J. & Benolt, Jeffrey T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Final Report for "Design calculations for high-space-charge beam-to-RF conversion".

Description: Accelerator facility upgrades, new accelerator applications, and future design efforts are leading to novel klystron and IOT device concepts, including multiple beam, high-order mode operation, and new geometry configurations of old concepts. At the same time, a new simulation capability, based upon finite-difference “cut-cell” boundaries, has emerged and is transforming the existing modeling and design capability with unparalleled realism, greater flexibility, and improved accuracy. This same … more
Date: October 17, 2008
Creator: Smithe, David N
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Status of the R&D towards electron cooling of RHIC

Description: The physics interest in a luminosity upgrade of RHIC requires the development of a cooling-frontier facility. Detailed calculations were made of electron cooling of the stored RHIC beams. This has been followed by beam dynamics simulations to establish the feasibility of creating the necessary electron beam. The electron beam accelerator will be a superconducting Energy Recovery Linac (ERL). An intensive experimental R&D program engages the various elements of the accelerator, as described … more
Date: June 1, 2007
Creator: Ben-Zvi, Ilan; Alduino, J.; Barton, D.; Beavis, D.; Blaskiewicz, M.; Brennan, J. M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Free Electron Lasers and High-Energy Electron Cooling.

Description: Cooling intense high-energy hadron beams remains a major challenge in modern accelerator physics. Synchrotron radiation of such beams is too feeble to provide significant cooling: even in the Large Hadron Collider (LHC) with 7 TeV protons, the longitudinal damping time is about thirteen hours. Decrements of traditional electron cooling decrease rapidly as the high power of beam energy, and an effective electron cooling of protons or antiprotons at energies above 100 GeV seems unlikely. Traditio… more
Date: August 31, 2007
Creator: Litvinenko, V. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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National Account Energy Alliance Final Report for the Basin Electric Project at Northern Border Pipeline Company's Compressor Station #7, North Dakota

Description: A field research test and verification project was conducted at the recovered energy generation plant at Northern Border Pipeline Company Compressor Station #7 (CS#7) near St. Anthony. Recovered energy generation plant equipment was supplied and installed by ORMAT Technologies, Inc. Basin Electric is purchasing the electricity under a purchase power agreement with an ORMAT subsidiary, which owns and operates the plant.
Date: February 1, 2008
Creator: Sweetzer, Richard & Leslie, Neil
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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R and D energy recovery LINAC at Brookhaven National Laboratory

Description: Collider Accelerator Department at BNL is in the final stages of developing the 20-MeV R and D energy recovery linac with super-conducting 2.5 MeV RF gun and single-mode super-conducting 5-cell RF linac. This unique facility aims to address many outstanding questions relevant for high current (up to 0.5 A of average current), high brightness energy-recovery linacs with novel ZigZag-type merger. Recent development in the R and D ERL plans include gun and 5-cell cavity (G5) test and possibility o… more
Date: June 23, 2008
Creator: Litvinenko,V. N.; Beavis, D.; Ben-Zvi, Ilan; Blaskiewicz, M.; Burrill, A.; Calaga, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Design and Fabrication of the RHIC Electron-Cooling Experiment High Beta Cavity and Cryomodule

Description: The summary of this report is: (1) A high-current SRF cavity for an Energy Recovery Linac (ERL) has been designed by BNL and AES and fabricated by AES; (2) The cavity was cleaned and tested by JLAB with BNL personnel support; (3) Cavity performance exceeded goal of 20 MV/m at Q{sub 0} > 1 x 10{sup 10} and far exceeded requirement of 15 MV/m at Q{sub 0} > 1 x 10{sup 10}; (4) Hermetic String assembled at JLAB with BNL personnel support and shipped to BNL; and (5) BNL has recently completed … more
Date: November 17, 2008
Creator: Holmes, D.; Calderaro, M.; Cole, M.; Falletta, M.; Peterson, E.; Rathke, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of a High-Brightness VHF Electron Source at LBNL

Description: Currently proposed ERL and high average power FEL projects require electron beam sources that can generate {approx}1nC bunch charges at high repetition rates. Many proposed sources are based around either high voltage DC or microwave RF guns, each with its particular set of technological limits and system complications. We propose a novel solution that greatly diminishes high voltage breakdown issues while also decreasing peak RF power requirements in a warm copper device, and that has the bene… more
Date: July 10, 2007
Creator: Lidia, Steven M.; Sannibale, Fernando; Staples, John W.; Virostek, Steve P. & Wells, Russell P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Asphalt Roofing Shingles Into Energy Project Summary Report

Description: Based on a widely cited September, 1999 report by the Vermont Agency of Natural Resources, nearly 11 million tons of asphalt roofing shingle wastes are produced in the United States each year. Recent data suggests that the total is made up of about 9.4 million tons from roofing tear-offs and about 1.6 million tons from manufacturing scrap. Developing beneficial uses for these materials would conserve natural resources, promote protection of the environment and strengthen the economy. This proje… more
Date: April 28, 2008
Creator: Jameson, Rex, PE
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Louis Stokes Laboratories, Building 50, National Institutes of Health, Bethesda, Maryland: Laboratories for the 21st Century Case Studies

Description: This case study was prepared by participants in the Laboratories for the 21st Century program, a joint endeavor of the U.S. Environmental Protection Agency and the U.S. Department of Energy's Federal Energy Management Program. The goal of this program is to foster greater energy efficiency in new laboratory buildings for both the public and the private sectors. Retrofits of existing laboratories are also encouraged. The energy-efficient features of the new laboratories in Building 50 at the Nat… more
Date: December 1, 2001
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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High Current Energy Recovery Linac at Bnl.

Description: We present the design and parameters of an energy recovery linac (ERL) facility, which is under construction in the Collider-Accelerator Department at BNL. This R&D facility has the goal of demonstrating CW operation of an ERL with an average beam current in the range of 0.1-1 ampere and with very high efficiency of energy recovery. The possibility of a future upgrade to a two-pass ERL is also being considered. The heart of the facility is a 5-cell 703.75 MHz super-conducting RF linac with … more
Date: May 16, 2005
Creator: Litvinenko, V. N.; Ben-Zvi, Ilan; Barton, D. S. & Al., Et
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Extremely High Currect, High-Brightness Energy Recovery Linac.

Description: Next generation ERL light-sources, high-energy electron coolers, high-power Free-Electron Lasers, powerful Compton X-ray sources and many other accelerators were made possible by the emerging technology of high-power, high-brightness electron beams. In order to get the anticipated performance level of ampere-class currents, many technological barriers are yet to be broken. BNL's Collider-Accelerator Department is pursuing some of these technologies for its electron cooling of RHIC application, … more
Date: May 16, 2005
Creator: Ben-Zvi, Ilan; Barton, D.; Beavis, D.; Blaskiewicz, M. & AL., ET
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Recycler Electron Cooling Project: Mechanical vibrations in the Pelletron and their effect on the beam

Description: The Fermilab's Recycler ring will employ an electron cooler to cool stored 8.9 GeV antiprotons [1]. The cooler is based on an electrostatic accelerator, Pelletron [2], working in an energy-recovery regime. A full-scale prototype of the cooler has been assembled and commissioned in a separate building [3]. The main goal of the experiments with the prototype was to demonstrate stable operation with a 3.5 MeV, 0.5 A DC electron beam while preserving a high beam quality in the cooling section. The … more
Date: July 1, 2005
Creator: Kazakevich, Grigory M.; Burov, A.; Boffo, C.; Joireman, P.; Saewert, G.; Schmidt, C. W. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A First Look at Beam Diagnostics for the Rhic Electron Cooling Project.

Description: High energy electron cooling [1] is essential to meet the luminosity specification for RHIC II [2]. In preparation for electron cooling, an Energy Recovery Linac (ERL) test facility [3] is under construction at BNL. A preliminary description of Diagnostics for the ERL was presented at an earlier workshop [4]. A significant portion of the eCooling Diagnostics will be a simple extension of those developed for the ERL test facility. In this paper we present a preliminary report on eCooling Diagnos… more
Date: June 6, 2005
Creator: Cameron, P.; Ben-Zvi, Ilan; Kewisch, J. & Litvinenko, V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Edge Plasma Analysis for Liquid-wall MFE Concepts

Description: A thick flowing layer of liquid (e.g., flibe-a molten salt, or Sn{sub 80}Li{sub 20}--a liquid metal) protects the structural walls of the magnetic fusion configuration so that they can last the life of the plant even with intense 14 MeV neutron bombardment from the D-T fusion reaction, The surface temperature of the liquid rises as it passes from the inlet nozzles to the exit nozzles due to absorption of line and bremsstrahlung radiation, and neutrons. The surface temperature can be reduced by … more
Date: September 21, 2000
Creator: Moir, R W; Rensink, M & Rognlien, T D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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