National Library of Energy BETA

Sample records for district steam usage

  1. Optimisation of Fuel Usage and Steam Availability in the Power and Steam

    E-Print Network [OSTI]

    Cambridge, University of

    the medium pressure manifold (nominally operated at 14 bar), through a steam turbine that can be usedOptimisation of Fuel Usage and Steam Availability in the Power and Steam Plant of a Paper Mill KEYWORDS: Model Predictive Control, Improved Efficiency, Optimisation, Power and Steam Supply System

  2. The methods of steam coals usage for coke production

    SciTech Connect (OSTI)

    Korobetskii, I.A.; Ismagilov, M.S.; Nazimov, S.A.; Sladkova, I.L.; Shudrikov, E.S.

    1998-07-01

    Nowadays, high volatile bituminous coals are broadly used for metallurgical coke production in Russia. The share of such coals in the coking blend is variable from 20 to 40% by weight. There are some large coal deposits in Kuznetskii basin which have coals with low caking tendency. The low caking properties of such coals limit of its application in the coking process. At the same time the usage of low caking coals for coke production would allow flexibility of the feedstock for coke production. Preliminary tests, carried out in COAL-C's lab has shown some differences in coal properties with dependence on the size distribution. That is why the separation of the well-caking fraction from petrographically heterogeneous coals and its further usage in coking process may be promising. Another way for low caking coals application in the coke industry is briquettes production from such coals. This method has been known for a very long time. It may be divided into two possible directions. First is a direct coking of briquettes from the low caking coals. Another way is by adding briquettes to coal blends in defined proportion and combined coking. The possibility of application of coal beneficiation methods mentioned above was investigated in present work.

  3. The Steam System Scoping Tool: Benchmarking Your Steam Operations Through Best Practices 

    E-Print Network [OSTI]

    Wright, A.; Hahn, G.

    2001-01-01

    system efficiency. The BestPractices Steam effort, a part of the DOE-OIT effort, has developed a new tool that steam energy managers and operations personnel can use to assess their steam operations and improve their steam energy usage -the Steam System...

  4. Steam System Improvement: A Case Study 

    E-Print Network [OSTI]

    Leigh, N.; Venkatesan, V. V.

    1999-01-01

    usage) where steam generation accounts for 85% of the total energy used. Therefore, optimization of the steam system has the biggest energy saving potential. This paper mill produces 40,000 pounds of steam at 600 psig and distributes it to the paper...

  5. Usage Statistics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19PortalStatus UpdatesUsage Statistics Usage

  6. Cyclohexanone 1 Steam Optimization, Freeport Texas 

    E-Print Network [OSTI]

    Morales, J. R.

    2010-01-01

    Findings in a Mature Manufacturing Process 2010 ACC Energy Efficiency Award Exceptional Merit Cyclohexanone 1 Steam Optimization, Freeport Texas 3 Energy Survey Concept ? 80% of the savings come from 20% of the recommendations: ?What are the critical... Steam Optimization ? The challenge: ? How to optimize steam usage in a mature plant (greater than 25 years) for a commodity product with increased energy costs? ? The answer: ? The activities included a pinch analysis as well as a design...

  7. Steam Quality 

    E-Print Network [OSTI]

    Johnston, W.

    1989-01-01

    "STEAM QUALITY has been generally defined as the amount of moisture/vapor (or lack thereof) contained within steam produced from some form of boiler. It has long been used as the standard term for the measurement of ""wet or dry"" steam and as a...

  8. Usage Summaries

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19PortalStatus UpdatesUsage Statistics

  9. HSI Usage

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation Current HABFESOpportunitiesNERSCGrid-based29 1.921HEPChargingHPX onShellUsage

  10. Superheated steam power plant with steam to steam reheater. [LMFBR

    SciTech Connect (OSTI)

    Silvestri, G.J.

    1981-06-23

    A desuperheater is disposed in a steam supply line supplying superheated steam to a shell and tube reheater.

  11. Integrating district cooling with cogeneration

    SciTech Connect (OSTI)

    Spurr, M.

    1996-11-01

    Chillers can be driven with cogenerated thermal energy, thereby offering the potential to increase utilization of cogeneration throughout the year. However, cogeneration decreases electric output compared to condensing power generation in power plants using a steam cycle (steam turbine or gas turbine combined cycle plants). The foregone electric production increases with increasing temperature of heat recovery. Given a range of conditions for key variables (such as cogeneration utilization, chiller utilization, cost of fuel, value of electricity, value of heat and temperature of heat recovered), how do technology alternatives for combining district cooling with cogeneration compare? This paper summarizes key findings from a report recently published by the International Energy Agency which examines the energy efficiency and economics of alternatives for combining cogeneration technology options (gas turbine simple cycle, diesel engine, steam turbine, gas turbine combined cycle) with chiller options (electric centrifugal, steam turbine centrifugal one-stage steam absorption, two-stage steam absorption, hot water absorption).

  12. usage_household2001.pdf

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26thI D- 6 0 4 2 r mReducing PAD District7Usage Indicators

  13. Inspect and Repair Steam Traps, Energy Tips: STEAM, Steam Tip...

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

    installed steam traps may have failed-thus allowing live steam to escape into the condensate return system. In systems with a regularly scheduled maintenance program, leaking...

  14. Deaerators in Industrial Steam Systems, Energy Tips: STEAM, Steam...

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

    Steam Systems Deaerators are mechanical devices that remove dissolved gases from boiler feedwater. Deaeration protects the steam system from the effects of corrosive gases....

  15. Steam Turbine Cogeneration 

    E-Print Network [OSTI]

    Quach, K.; Robb, A. G.

    2008-01-01

    Steam turbines are widely used in most industrial facilities because steam is readily available and steam turbine is easy to operate and maintain. If designed properly, a steam turbine co-generation (producing heat and power simultaneously) system...

  16. Thomas Reddinger Director, Steam

    E-Print Network [OSTI]

    McConnell, Terry

    Thomas Reddinger Director, Steam Operations Steven Richards Assistant Manager of Maintenance & Operations Tim Winterfield Operations Supervisor (Distribution) Deborah Moorhead Office Coordinator III Jacob Donovan- ColinSteam Plant Operator Vincent Massara Steam Plant Operator SU Steam Station/Chilled Water

  17. Steam Pricing 

    E-Print Network [OSTI]

    Jones, K. C.

    1986-01-01

    stream_source_info ESL-IE-86-06-19.pdf.txt stream_content_type text/plain stream_size 30463 Content-Encoding ISO-8859-1 stream_name ESL-IE-86-06-19.pdf.txt Content-Type text/plain; charset=ISO-8859-1 STEAM PRICING... Kenneth C. Jones Shell Oil Company Houston, Texas ABSTRACT Steam is used in many plants to furnish both heat and mechanical energy. It is typically produced in several fired boilers which may operate at different pressures and with different...

  18. Steam in Distribution and Use: Steam Quality Redefined 

    E-Print Network [OSTI]

    Deacon, W.

    1989-01-01

    "Steam quality is an important measurement in steam generation. It's a measurement of steam to moisture ratio. In use, steam quality takes on a different meaning - steam which maximizes energy transfer. To do this, the steam must be clean, dry...

  19. Steam in Distribution and Use: Steam Quality Redefined 

    E-Print Network [OSTI]

    Deacon, W. T.

    1989-01-01

    Steam quality is an important measurement in steam generation. It's a measurement of steam to moisture ratio. In use, steam quality takes on a different meaning- steam which maximizes energy transfer. To do this, the steam must be clean, dry...

  20. Susanville District Heating District Heating Low Temperature...

    Open Energy Info (EERE)

    Susanville District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Susanville District Heating District Heating Low Temperature...

  1. Steam System Optimization 

    E-Print Network [OSTI]

    Aegerter, R.

    2004-01-01

    and Cost The ultimate goal in optimizing the steam system is to minimize the steam generation costs. Most projects are dependent on the steam balance and can only be justified if low-pressure steam is being vented or if steam is being let down. Some... savings can be quantified. Steam Venting or Letting Down? Typically a plant will be either venting excess low-pressure steam or letting down steam to meet the low-pressure steam demand. If a plant has multiple operating units, it is possible...

  2. Steam System Optimization 

    E-Print Network [OSTI]

    Aegerter, R. A.

    1998-01-01

    Most plant steam systems are complex systems. Usually the fuel required to produce the steam represents a major expense for manufacturing facilities. By properly operating and maintaining the steam system and making minor improvements, significant...

  3. Steam Digest Volume IV

    SciTech Connect (OSTI)

    2004-07-01

    This edition of the Steam Digest is a compendium of 2003 articles on the technical and financial benefits of steam efficiency, presented by the stakeholders of the U.S. Department of Energy's BestPractices Steam effort.

  4. Steam Trap Application 

    E-Print Network [OSTI]

    Murphy, J. J.

    1982-01-01

    The effective application of steam traps encompasses three primary areas which are the selection and sizing, the installation, and the monitoring of the steam trapping system. Proper application of steam traps will improve production rates, product...

  5. Steam Path Audits on Industrial Steam Turbines 

    E-Print Network [OSTI]

    Mitchell, D. R.

    1992-01-01

    on Industrial steam Turbines DOUGLAS R. MITCHELL. ENGINEER. ENCOTECH, INC., SCHENECTADY, NEW YORK ABSTRACT The electric utility industry has benefitted from steam path audits on steam turbines for several years. Benefits include the ability to identify... areas of performance degradation during a turbine outage. Repair priorities can then be set in accordance with quantitative results from the steam path audit. As a result of optimized repair decisions, turbine efficiency increases, emissions...

  6. usage_household2001.pdf

    Gasoline and Diesel Fuel Update (EIA)

    Usage Indicators Tables (Million U.S. Households; 60 pages, 247 kb) Contents Pages HC6-1a. Usage Indicators by Climate Zone, Million U.S. Households, 2001 5 HC6-2a. Usage...

  7. East Bank District Heating-to-Cooling Conversion Plan Check the date your building's cooling system is scheduled to be on.

    E-Print Network [OSTI]

    Webb, Peter

    East Bank District Heating-to-Cooling Conversion Plan Check the date your building's cooling system Coal Storage Building 39 NA Cooke Hall 56 Donhowe Building 044 East Gateway District Steam Distr. 199

  8. Steam Oxidation of Advanced Steam Turbine Alloys

    SciTech Connect (OSTI)

    Holcomb, Gordon R.

    2008-01-01

    Power generation from coal using ultra supercritical steam results in improved fuel efficiency and decreased greenhouse gas emissions. Results of ongoing research into the oxidation of candidate nickel-base alloys for ultra supercritical steam turbines are presented. Exposure conditions range from moist air at atmospheric pressure (650°C to 800°C) to steam at 34.5 MPa (650°C to 760°C). Parabolic scale growth coupled with internal oxidation and reactive evaporation of chromia are the primary corrosion mechanisms.

  9. Steam atmosphere drying exhaust steam recompression system

    DOE Patents [OSTI]

    Becker, F.E.; Smolensky, L.A.; Doyle, E.F.; DiBella, F.A.

    1994-03-08

    This invention relates to a heated steam atmosphere drying system comprising dryer in combination with an exhaust recompression system which is extremely energy efficient and eliminates dangers known to air dryers. The system uses superheated steam as the drying medium, which recirculates through the system where its heat of evaporation and heat of compression is recovered, thereby providing a constant source of heat to the drying chamber. The dryer has inlets whereby feedstock and superheated steam are fed therein. High heat transfer and drying rates are achieved by intimate contact of the superheated steam with the particles being dried. The dryer comprises a vessel which enables the feedstock and steam to enter and recirculate together. When the feedstock becomes dry it will exit the dryer with the steam and become separated from the steam through the use of a curvilinear louver separator (CLS). The CLS enables removal of fine and ultrafine particles from the dryer. Water vapor separated from the particles in the CLS as superheated steam, may then be recovered and recirculated as steam through the use of a compressor to either directly or indirectly heat the dryer, and a heat exchanger or a heater to directly provide heat to the dryer. This system not only provides a very efficient heat transfer system but results in a minimum carry-over of ultrafine particles thereby eliminating any explosive hazard. 17 figures.

  10. Steam atmosphere drying exhaust steam recompression system

    DOE Patents [OSTI]

    Becker, Frederick E. (Reading, MA); Smolensky, Leo A. (Concord, MA); Doyle, Edward F. (Dedham, MA); DiBella, Francis A. (Roslindale, MA)

    1994-01-01

    This invention relates to a heated steam atmosphere drying system comprising dryer in combination with an exhaust recompression system which is extremely energy efficient and eliminates dangers known to air dryers. The system uses superheated steam as the drying medium, which recirculated through the system where its heat of evaporation and heat of compression is recovered, thereby providing a constant source of heat to the drying chamber. The dryer has inlets whereby feedstock and superheated steam are fed therein. High heat transfer and drying rates are achieved by intimate contact of the superheated steam with the particles being dried The dryer comprises a vessel which enables the feedstock and steam to enter recirculate together. When the feedstock becomes dry it will exit the dryer with the steam and become separated from the steam through the use of a curvilinear louver separator (CLS). The CLS enables removal of fine and ultrafine particles from the dryer. Water vapor separated from the particles in the CLS as superheated steam, may then be recovered and recirculated as steam through the use of a compressor to either directly or indirectly heat the dryer, and a heat exchanger or a heater to directly provide heat to the dryer. This system not only provides a very efficient heat transfer system but results in a minimum carry-over of ultrafine particles thereby eliminating any explosive hazard.

  11. Steam Technical Brief: Steam Pressure Reduction: Opportunities and Issues

    SciTech Connect (OSTI)

    2010-06-25

    A BestPractices Technical Brief describing industrial steam generation systems and opportunities for reducing steam system operating pressure.

  12. Waste Steam Recovery 

    E-Print Network [OSTI]

    Kleinfeld, J. M.

    1979-01-01

    An examination has been made of the recovery of waste steam by three techniques: direct heat exchange to process, mechanical compression, and thermocompression. Near atmospheric steam sources were considered, but the techniques developed are equally...

  13. Steam Digest 2001

    SciTech Connect (OSTI)

    Not Available

    2002-01-01

    Steam Digest 2001 chronicles BestPractices Program's contributions to the industrial trade press for 2001, and presents articles that cover technical, financial and managerial aspects of steam optimization.

  14. Downhole steam quality measurement

    DOE Patents [OSTI]

    Lee, D.O.; Montoya, P.C.; Muir, J.F.; Wayland, J.R. Jr.

    1985-06-19

    The present invention relates to an empirical electrical method for remote sensing of steam quality utilizing flow-through grids which allow measurement of the electrical properties of a flowing two-phase mixture. The measurement of steam quality in the oil field is important to the efficient application of steam assisted recovery of oil. Because of the increased energy content in higher quality steam it is important to maintain the highest possible steam quality at the injection sandface. The effectiveness of a steaming operation without a measure of steam quality downhole close to the point of injection would be difficult to determine. Therefore, a need exists for the remote sensing of steam quality.

  15. Downhole steam quality measurement

    DOE Patents [OSTI]

    Lee, David O. (Albuquerque, NM); Montoya, Paul C. (Albuquerque, NM); Muir, James F. (Albuquerque, NM); Wayland, Jr., J. Robert (Albuquerque, NM)

    1987-01-01

    An empirical method for the remote sensing of steam quality that can be easily adapted to downhole steam quality measurements by measuring the electrical properties of two-phase flow across electrode grids at low frequencies.

  16. 4. Heat exchangers; Steam, steam processes

    E-Print Network [OSTI]

    Zevenhoven, Ron

    to transfer a certain heat rate Q (J/s = W) For a small section dx of the tube (with diameter D), the heat With average temperature difference = for the heat exchanger length, the heat rate can1/74 4. Heat exchangers; Steam, steam processes Ron Zevenhoven Åbo Akademi University Thermal

  17. Steam trap monitor

    DOE Patents [OSTI]

    Ryan, M.J.

    1987-05-04

    A steam trap monitor positioned downstream of a steam trap in a closed steam system includes a first sensor (a hot finger) for measuring the energy of condensate and a second sensor (a cold finger) for measuring the total energy of condensate and steam in the line. The hot finger includes one or more thermocouples for detecting condensate level and energy, while the cold finger contains a liquid with a lower boiling temperature than that of water. Vapor pressure from the liquid is used to do work such as displacing a piston or bellow in providing an indication of total energy (steam + condensate) of the system. Processing means coupled to and responsive to outputs from the hot and cold fingers subtracts the former from the latter to provide an indication of the presence of steam downstream from the trap indicating that the steam trap is malfunctioning. 2 figs.

  18. Precision and Energy Usage for Additive Manufacturing

    E-Print Network [OSTI]

    Clemon, Lee; Sudradjat, Anton; Jaquez, Maribel; Krishna, Aditya; Rammah, Marwan; Dornfeld, David

    2013-01-01

    65688 PRECISION AND ENERGY USAGE FOR ADDITIVE MANUFACTURINGpart quality and energy usage for additive manufacturingfound in this study. Energy usage is quantified by measuring

  19. Steam System Survey Guide | Department of Energy

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

    a steam system, (2) identifying steam properties for the steam system, (3) improving boiler operations, (4) improving resource utilization in the steam system, and (5)...

  20. Steam generator support system

    DOE Patents [OSTI]

    Moldenhauer, James E. (Simi Valley, CA)

    1987-01-01

    A support system for connection to an outer surface of a J-shaped steam generator for use with a nuclear reactor or other liquid metal cooled power source. The J-shaped steam generator is mounted with the bent portion at the bottom. An arrangement of elongated rod members provides both horizontal and vertical support for the steam generator. The rod members are interconnected to the steam generator assembly and a support structure in a manner which provides for thermal distortion of the steam generator without the transfer of bending moments to the support structure and in a like manner substantially minimizes forces being transferred between the support structure and the steam generator as a result of seismic disturbances.

  1. Steam generator support system

    DOE Patents [OSTI]

    Moldenhauer, J.E.

    1987-08-25

    A support system for connection to an outer surface of a J-shaped steam generator for use with a nuclear reactor or other liquid metal cooled power source is disclosed. The J-shaped steam generator is mounted with the bent portion at the bottom. An arrangement of elongated rod members provides both horizontal and vertical support for the steam generator. The rod members are interconnected to the steam generator assembly and a support structure in a manner which provides for thermal distortion of the steam generator without the transfer of bending moments to the support structure and in a like manner substantially minimizes forces being transferred between the support structure and the steam generator as a result of seismic disturbances. 4 figs.

  2. HP Steam Trap Monitoring 

    E-Print Network [OSTI]

    Pascone, S.

    2011-01-01

    stream_source_info ESL-IC-11-10-61.pdf.txt stream_content_type text/plain stream_size 2024 Content-Encoding ISO-8859-1 stream_name ESL-IC-11-10-61.pdf.txt Content-Type text/plain; charset=ISO-8859-1 STEAM MONITORING HP... Steam Trap Monitoring HP Steam Trap Monitoring ? 12-18 months payback! ? 3-5% permanent reduction in consumption ? LEED Pt.? Innovation in Operations EB O&M ? Saved clients over $1,000,000 Annual consumption Steam Trap Monitoring ? Real...

  3. Steam System Survey Guide

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

    TO ACTION-IDENTIFYING STEAM SYSTEM PROPERTIES... 3-1 4. OPPORTUNITIES FOR BOILER EFFICIENCY IMPROVEMENT... 4-1 4.1 OVERVIEW AND GENERAL...

  4. Steam Champions in Manufacturing 

    E-Print Network [OSTI]

    Russell, C.

    2001-01-01

    Traditionally, industrial steam system management has focused on operations and maintenance. Competitive pressures, technology evolution, and increasingly complex regulations provide additional management challenges. The practice of operating a...

  5. Assessment of superheated steam drying of wood waste

    SciTech Connect (OSTI)

    Woods, B.G.; Nguyen, Y.; Bruce, S.

    1994-12-31

    A 5 MW co-generation facility using wood waste is described which will supply power to Ontario Hydro, steam to the sawmill for process heating, and hot water for district heating customers in the town. The use of superheated steam for drying the wood was investigated to determine the impact on boiler performance, the environmental impact and the economic feasibility. The main benefit with superheated steam drying is the reduction in VOC emissions. The capital cost is currently higher with superheated steam drying, but further investigation is warranted to determine if the cost reductions which could be achieved by manufacturing the major components in North America are sufficient to make the technology cost competitive.

  6. Benchmark the Fuel Cost of Steam Generation, Energy Tips: STEAM...

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

    of your steam system. This cost is dependent upon fuel type, unit fuel cost, boiler efficiency, feedwater temperature, and steam pressure. This calculation provides a...

  7. Options for Generating Steam Efficiently 

    E-Print Network [OSTI]

    Ganapathy, V.

    1996-01-01

    This paper describes how plant engineers can efficiently generate steam when there are steam generators and Heat Recovery Steam Generators in their plant. The process consists of understanding the performance characteristics of the various equipment...

  8. Warm Springs Water District District Heating Low Temperature...

    Open Energy Info (EERE)

    Warm Springs Water District District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Warm Springs Water District District Heating Low Temperature...

  9. Elko County School District District Heating Low Temperature...

    Open Energy Info (EERE)

    Elko County School District District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Elko County School District District Heating Low Temperature...

  10. Pagosa Springs District Heating District Heating Low Temperature...

    Open Energy Info (EERE)

    Pagosa Springs District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Pagosa Springs District Heating District Heating Low...

  11. City of Klamath Falls District Heating District Heating Low Temperatur...

    Open Energy Info (EERE)

    City of Klamath Falls District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name City of Klamath Falls District Heating District Heating...

  12. San Bernardino District Heating District Heating Low Temperature...

    Open Energy Info (EERE)

    San Bernardino District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name San Bernardino District Heating District Heating Low...

  13. Philip District Heating District Heating Low Temperature Geothermal...

    Open Energy Info (EERE)

    Philip District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Philip District Heating District Heating Low Temperature Geothermal...

  14. Kethcum District Heating District Heating Low Temperature Geothermal...

    Open Energy Info (EERE)

    Kethcum District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Kethcum District Heating District Heating Low Temperature Geothermal...

  15. Boise City Geothermal District Heating District Heating Low Temperatur...

    Open Energy Info (EERE)

    Boise City Geothermal District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Boise City Geothermal District Heating District Heating...

  16. Midland District Heating District Heating Low Temperature Geothermal...

    Open Energy Info (EERE)

    Midland District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Midland District Heating District Heating Low Temperature Geothermal...

  17. Steam Trap Management 

    E-Print Network [OSTI]

    Murphy, J. J.; Hirtner, H. H.

    1985-01-01

    A medium-sized plant of a high technology company is reaping the benefits of a Pro-active Steam Trap Program provided by Yarway's TECH/SERV Division. Initial work began March '84 and the most recent steam trap feasibility study conducted in March...

  18. Steam and Condensate Systems 

    E-Print Network [OSTI]

    Yates, W.

    1980-01-01

    In the late 60's and early 70's oil was plentiful and steam was relatively inexpensive. The switch to low sulphur fuel oil and the oil embargo suddenly changed the picture. The cost of steam rose from $0.50 per 1,000# to today's cost of $4...

  19. Steam and Condensate Systems 

    E-Print Network [OSTI]

    Yates, W.

    1979-01-01

    In the late 60's and early 70's oil was plentiful and steam was relatively inexpensive. The switch to low sulphur fuel oil and the oil embargo suddenly changed the picture. The cost of steam rose from about $0.50 per 1,000# to $3.00 or more. Many...

  20. Streams of Steam The Steam Boiler Specification Case Study

    E-Print Network [OSTI]

    Streams of Steam ­ The Steam Boiler Specification Case Study Manfred Broy, Franz Regensburger-tuned con- cepts of FOCUS by its application of the requirements specification of a steam boiler, see [Abr96-studies. In this context, applying FOCUS to the steam boiler case study ([Abr96]) led us to a couple of questions re- #12

  1. Steam trap monitor

    DOE Patents [OSTI]

    Ryan, Michael J. (Plainfield, IL)

    1988-01-01

    A steam trap monitor positioned downstream of a steam trap in a closed steam system includes a first sensor (the combination of a hot finger and thermocouple well) for measuring the energy of condensate and a second sensor (a cold finger) for measuring the total energy of condensate and steam in the line. The hot finger includes one or more thermocouples for detecting condensate level and energy, while the cold finger contains a liquid with a lower boiling temperature than that of water. Vapor pressure from the liquid is used to do work such as displacing a piston or bellows in providing an indication of total energy (steam+condensate) of the system. Processing means coupled to and responsive to outputs from the thermocouple well hot and cold fingers subtracts the condensate energy as measured by the hot finger and thermocouple well from the total energy as measured by the cold finger to provide an indication of the presence of steam downstream from the trap indicating that the steam trap is malfunctioning.

  2. Steam Condensation Induced Waterhammer 

    E-Print Network [OSTI]

    Kirsner, W.

    2000-01-01

    mer-- i.e. fast moving steam picking up a slug of condensate and hurling it downstream against an elbow or a valve. Condensation Induced Waterham mer can be 100 times more powerful than this type of waterhammer. Because it does not require flowing... to seek relief from the Owner. A compromise was negotiated after the first week- steam would be de-energized at midnight before each workday, asbestos abators would start work at 4:00 a.m. and finish by noontime at which time steam would be restored...

  3. Steam System Data Management 

    E-Print Network [OSTI]

    Roberts, D.

    2013-01-01

    stream_source_info ESL-IE-13-05-35.pdf.txt stream_content_type text/plain stream_size 5953 Content-Encoding ISO-8859-1 stream_name ESL-IE-13-05-35.pdf.txt Content-Type text/plain; charset=ISO-8859-1 Steam System Data... Certifications ?Retired From Chevron After 25 Years ? Established A Steam System Program ? Planner For Routine Maintenance Work ? Planner For Steam System Improvements ? Wal-Tech Valve, Inc. ? Purchased Wal-Tech Valve, Inc. In 2007 ? Implemented Safety...

  4. Email To Friend Steam Electricity Generator

    E-Print Network [OSTI]

    . keymanengravables.com Steam Turbine Generator Info, Pictures And Deals For Steam turbine generator ediscountshoppingBack One Email To Friend Steam Electricity Generator Need Steam Electricity Generator? See Steam Electricity Generator. greenshieldsindustrial.com Steam Generators Deals on Steam Generators Find what you

  5. Internet Usage Mining Using Random Forests

    E-Print Network [OSTI]

    Liu, Xuening

    2013-01-01

    Los Angeles Internet Usage Mining Using Random Forests Aof the Thesis Internet Usage Mining Using Random Forests bydata emerges, data mining is finally in the spotlight. This

  6. Steam Pressure Reduction: Opportunities and Issues | Department...

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

    Steam Pressure Reduction: Opportunities and Issues Steam Pressure Reduction: Opportunities and Issues This brief details industrial steam generation systems best practices and...

  7. DOE's BestPractices Steam End User Training Steam End User Training

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    DOE's BestPractices Steam End User Training Steam End User Training Steam Distribution Losses Module 1 June 29, 2010 Steam EndUser Training Steam Distribution System Losses Module Slide 1 pressure. #12;DOE's BestPractices Steam End User Training Steam End User Training Steam Distribution

  8. Optical wet steam monitor

    DOE Patents [OSTI]

    Maxey, Lonnie C. (Powell, TN); Simpson, Marc L. (Knoxville, TN)

    1995-01-01

    A wet steam monitor determines steam particle size by using laser doppler velocimeter (LDV) device to produce backscatter light. The backscatter light signal is processed with a spectrum analyzer to produce a visibility waveform in the frequency domain. The visibility waveform includes a primary peak and a plurality of sidebands. The bandwidth of at least the primary frequency peak is correlated to particle size by either visually comparing the bandwidth to those of known particle sizes, or by digitizing the waveform and comparing the waveforms electronically.

  9. Optical wet steam monitor

    DOE Patents [OSTI]

    Maxey, L.C.; Simpson, M.L.

    1995-01-17

    A wet steam monitor determines steam particle size by using laser doppler velocimeter (LDV) device to produce backscatter light. The backscatter light signal is processed with a spectrum analyzer to produce a visibility waveform in the frequency domain. The visibility waveform includes a primary peak and a plurality of sidebands. The bandwidth of at least the primary frequency peak is correlated to particle size by either visually comparing the bandwidth to those of known particle sizes, or by digitizing the waveform and comparing the waveforms electronically. 4 figures.

  10. Evaluating Steam Trap Performance 

    E-Print Network [OSTI]

    Fuller, N. Y.

    1986-01-01

    stream_source_info ESL-IE-86-06-126.pdf.txt stream_content_type text/plain stream_size 11555 Content-Encoding ISO-8859-1 stream_name ESL-IE-86-06-126.pdf.txt Content-Type text/plain; charset=ISO-8859-1 EVALUATING STEAM... TRAP PERFORMANCE Noel Y Fuller, P.E. Holston Defense Corporation Kingsport, Tennessee ABSTRACT Laboratory tests were conducted on several types of steam traps at Holston Defense Corporation in Kingsport, Tennessee. Data from these tests...

  11. Reduction in Unit Steam Production 

    E-Print Network [OSTI]

    Gombos, R.

    2004-01-01

    In 2001 the company's Arch-Brandenburg facility faced increased steam costs due to high natural gas prices and decreased production due to shutdown of a process. The facility was challenged to reduce unit steam consumption to minimize the effects...

  12. Steam generator tube rupture study

    E-Print Network [OSTI]

    Free, Scott Thomas

    1986-01-01

    This report describes our investigation of steam generator behavior during a postulated tube rupture accident. Our study was performed using the steam generator, thermal-hydraulic analysis code THERMIT-UTSG. The purpose ...

  13. Steam System Forecasting and Management 

    E-Print Network [OSTI]

    Mongrue, D. M.; Wittke, D. O.

    1982-01-01

    Union Carbide's Taft Plant is a typical petrochemical complex with several processes that use and produce various fuel and steam resources. The plant steam and fuel system balances vary extensively since several process units 'block operate...

  14. Heat Recovery Steam Generator Simulation 

    E-Print Network [OSTI]

    Ganapathy, V.

    1993-01-01

    The paper discusses the applications of Heat Recovery Steam Generator Simulation. Consultants, plant engineers and plant developers can evaluate the steam side performance of HRSGs and arrive at the optimum system which matches the needs...

  15. Economics of Steam Pressure Reduction 

    E-Print Network [OSTI]

    Sylva, D. M.

    1985-01-01

    Economics of Steam Pressure Reduction is a technical paper that addresses the operating and economic advantages associated with the program to lower the steam operating pressure. Evaluation of a testing program will be discussed. The paper...

  16. Campus Energy Infrastructure Steam Turbine

    E-Print Network [OSTI]

    Rose, Michael R.

    Campus Energy Infrastructure Steam Turbine Gas Turbine University Substation High Pressure Natural,000 lbs/hr (with duct fire) Steam Turbine Chiller 2,000 tons Campus Heat Load 60 MMBtu/hr (average) Campus-hours) Generator Generator Heat Recovery Alternative Uses: 1. Campus heating load 2. Steam turbine chiller

  17. Table 14. Steam Coal Exports by Customs District

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices Global Crude Oil Prices Brent396,013 34,4670.2.3.

  18. Usage by Job Size Table

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAbout /Two0 - 19PortalStatus UpdatesUsage StatisticsUsage by

  19. Steam Pressure Reduction Opportunities and Issues 

    E-Print Network [OSTI]

    Berry, J.; Griffin, B.; Wright, A. L.

    2006-01-01

    of changes in the high-pressure side of the steam system from the boiler through the condensate return system. In the boiler plant, losses from combustion, boiler blowdown, radiation, and steam venting from condensate receivers would be reduced... by reducing steam pressure. Similarly, in the steam distribution system, losses from radiation, flash steam vented from condensate receivers, and component and steam trap leakage would also be reduced. There are potential problems associated with steam...

  20. Water cooled steam jet

    DOE Patents [OSTI]

    Wagner, E.P. Jr.

    1999-01-12

    A water cooled steam jet for transferring fluid and preventing vapor lock, or vaporization of the fluid being transferred, has a venturi nozzle and a cooling jacket. The venturi nozzle produces a high velocity flow which creates a vacuum to draw fluid from a source of fluid. The venturi nozzle has a converging section connected to a source of steam, a diffuser section attached to an outlet and a throat portion disposed there between. The cooling jacket surrounds the venturi nozzle and a suction tube through which the fluid is being drawn into the venturi nozzle. Coolant flows through the cooling jacket. The cooling jacket dissipates heat generated by the venturi nozzle to prevent vapor lock. 2 figs.

  1. Steam separator latch assembly

    DOE Patents [OSTI]

    Challberg, R.C.; Kobsa, I.R.

    1994-02-01

    A latch assembly removably joins a steam separator assembly to a support flange disposed at a top end of a tubular shroud in a nuclear reactor pressure vessel. The assembly includes an annular head having a central portion for supporting the steam separator assembly thereon, and an annular head flange extending around a perimeter thereof for supporting the head to the support flange. A plurality of latches are circumferentially spaced apart around the head flange with each latch having a top end, a latch hook at a bottom end thereof, and a pivot support disposed at an intermediate portion therebetween and pivotally joined to the head flange. The latches are pivoted about the pivot supports for selectively engaging and disengaging the latch hooks with the support flange for fixedly joining the head to the shroud or for allowing removal thereof. 12 figures.

  2. Water cooled steam jet

    DOE Patents [OSTI]

    Wagner, Jr., Edward P. (Idaho Falls, ID)

    1999-01-01

    A water cooled steam jet for transferring fluid and preventing vapor lock, or vaporization of the fluid being transferred, has a venturi nozzle and a cooling jacket. The venturi nozzle produces a high velocity flow which creates a vacuum to draw fluid from a source of fluid. The venturi nozzle has a converging section connected to a source of steam, a diffuser section attached to an outlet and a throat portion disposed therebetween. The cooling jacket surrounds the venturi nozzle and a suction tube through which the fluid is being drawn into the venturi nozzle. Coolant flows through the cooling jacket. The cooling jacket dissipates heat generated by the venturi nozzle to prevent vapor lock.

  3. Water-Efficient Technology Opportunity: Steam Sterilizer Condensate...

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

    Steam Sterilizer Condensate Retrofit Kit Water-Efficient Technology Opportunity: Steam Sterilizer Condensate Retrofit Kit Steam sterilizers are heated by steam that condenses and...

  4. Steam Technical Brief: Industrial Steam System Heat-Transfer Solutions

    SciTech Connect (OSTI)

    None

    2010-06-25

    This BestPractices Steam Technical Brief provides an overview of considerations for selecting the best heat-transfer solution for various applications.

  5. Understanding Road Usage Patterns in Urban Areas

    E-Print Network [OSTI]

    decreases the roads' level of service, while at the same time increasing both fuel consump- tion5Understanding Road Usage Patterns in Urban Areas Pu Wang1,2 , Timothy Hunter4 , Alexandre M. Bayen4 patterns in urban road usage. We find that the major usage of each road segment can be traced to its own

  6. Steam Pressure Reduction: Opportunities and Issues; A BestPractices Steam Technical Brief

    SciTech Connect (OSTI)

    Not Available

    2005-11-01

    A BestPractices Technical Brief describing industrial steam generation systems and opportunities for reducing steam system operating pressure.

  7. Process for purifying geothermal steam

    DOE Patents [OSTI]

    Li, Charles T. (Richland, WA)

    1980-01-01

    Steam containing hydrogen sulfide is purified and sulfur recovered by passing the steam through a reactor packed with activated carbon in the presence of a stoichiometric amount of oxygen which oxidizes the hydrogen sulfide to elemental sulfur which is adsorbed on the bed. The carbon can be recycled after the sulfur has been recovered by vacuum distillation, inert gas entrainment or solvent extraction. The process is suitable for the purification of steam from geothermal sources which may also contain other noncondensable gases.

  8. The Elimination of Steam Traps 

    E-Print Network [OSTI]

    Dickman, F.

    1985-01-01

    compile published data by three leading steam trap facturers. ANNUAL COST OF STEAM LOSS FOR 100 PSIG STEAM AT $5/1000 LBS. TgpOrlflce l18nul8ctuNf M.,utectu,., DI.mNr A' 84 1/." . $ 3,150 $ 2,313 e to from nu ufKluNf co 3,1711 1/4" $12,eoo $ 9...

  9. Review of Orifice Plate Steam Traps

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

    ... 25 iv v LIST OF FIGURES Figure Page 1 Steam supply and condensate drainage piping for a common space heater ... 1 2 Typical orifice plate steam...

  10. Steam Digest 2001: Office of Industrial Technologies

    SciTech Connect (OSTI)

    None, None

    2002-01-01

    Steam Digest 2001 chronicles Best Practices Program's contributions to the industrial trade press for 2001, and presents articles that cover technical, financial and managerial aspects of steam optimization.

  11. Steam boosted internal combustion engine

    SciTech Connect (OSTI)

    Green, M.A.

    1987-01-20

    A device is described to supplement the power produced by burning fuel in an internal combustion engine with steam, the device comprising: a means for producing a constant flow of water past a boiler means; a means for allowing the water to flow in the direction of the boiler; a boiler means external to the internal combustion engine to convert the water into superheated steam; a means for controlling the pressure of the water such that the water pressure is greater than the pressure of the steam produced by the boiler; and a means for injection of the superheated steam directly into a cylinder of the internal combustion engine, a means for producing a constant flow of water at a pressure greater than the pressure of the superheated steam, wherein the constant flow means at greater pressure comprises a chamber with a gaseous component, with the gaseous component being of constant volume and exerting constant pressure upon water within the chamber.

  12. PORST: a computer code to analyze the performance of retrofitted steam turbines

    SciTech Connect (OSTI)

    Lee, C.; Hwang, I.T.

    1980-09-01

    The computer code PORST was developed to analyze the performance of a retrofitted steam turbine that is converted from a single generating to a cogenerating unit for purposes of district heating. Two retrofit schemes are considered: one converts a condensing turbine to a backpressure unit; the other allows the crossover extraction of steam between turbine cylinders. The code can analyze the performance of a turbine operating at: (1) valve-wide-open condition before retrofit, (2) partial load before retrofit, (3) valve-wide-open after retrofit, and (4) partial load after retrofit.

  13. Steam Power Partnership: Improving Steam System Efficiency Through Marketplace Partnerships 

    E-Print Network [OSTI]

    Jones, T.

    1997-01-01

    The Alliance to Save Energy, a national nonprofit organization based in Washington DC, and the U.S. Department of Energy are working with energy efficiency suppliers to promote the comprehensive upgrade of industrial steam systems. Like EPA's Green...

  14. ProSteam- A Structured Approach to Steam System Improvement 

    E-Print Network [OSTI]

    Eastwood, A.

    2002-01-01

    improved insulation, better condensate return, increased process integration, new steam turbines or even the installation of gas-turbine based cogeneration. This approach allows sites to develop a staged implementation plan for both operational and capital...

  15. Trends in packaged steam generators

    SciTech Connect (OSTI)

    Ganapathy, V. [ABCO Industries, Abilene, TX (United States)

    1996-09-01

    Oil and gas-fired packaged steam generators are used in many industrial plants. They generate saturated or superheated steam up to 250,000 lb/hr, 1000 psig, and 950 F. They may be used for continuous steam generation or as standby boilers in cogeneration systems. Numerous variables affect the design of this equipment. A few important considerations should be addressed at an early point by the plant engineer specifying or evaluating equipment options. These considerations include trends such as customized designs that minimize operating costs and ensure emissions regulations are met. The paper discusses efficiency considerations first.

  16. Wet-steam erosion of steam turbine disks and shafts

    SciTech Connect (OSTI)

    Averkina, N. V.; Zheleznyak, I. V.; Kachuriner, Yu. Ya.; Nosovitskii, I. A.; Orlik, V. G.; Shishkin, V. I.

    2011-01-15

    A study of wet-steam erosion of the disks and the rotor bosses or housings of turbines in thermal and nuclear power plants shows that the rate of wear does not depend on the diagrammed degree of moisture, but is determined by moisture condensing on the surfaces of the diaphragms and steam inlet components. Renovating the diaphragm seals as an assembly with condensate removal provides a manifold reduction in the erosion.

  17. Non-Isothermal Steam Mixing Motivation & Objectives

    E-Print Network [OSTI]

    Psaltis, Demetri

    gas turbine is connected to a heat recovery steam generator (HRSG), which together feed a single steam turbine. When running multiple gas turbines at different loads, the HRSGs will produce steam streams into the intermediate pressure (IP) steam turbine (figure 1). The goal of this thesis is to determine a compact yet

  18. Combined Heat and Power Plant Steam Turbine

    E-Print Network [OSTI]

    Rose, Michael R.

    waste heat) Gas Turbine University Substation High Pressure Natural Gas Campus Electric Load SouthernCombined Heat and Power Plant Steam Turbine Steam Turbine Chiller Campus Heat Load Steam (recovered Generator Heat Recovery Alternative Uses: 1. Campus heating load 2. Steam turbine chiller to campus cooling

  19. Steam Plant Conversion Eliminating Campus Coal Use

    E-Print Network [OSTI]

    Dai, Pengcheng

    Steam Plant Conversion Eliminating Campus Coal Use at the Steam Plant #12;· Flagship campus region produce 14% of US coal (TN only 0.2%) Knoxville and the TN Valley #12;· UT is one of about 70 U.S. colleges and universities w/ steam plant that burns coal · Constructed in 1964, provides steam for

  20. Steam System Improvement: A Case Study 

    E-Print Network [OSTI]

    Venkatesan, V. V.; Leigh, N.

    1998-01-01

    , steam requirements for bo process heating and power service do not alwa s coincide. This may leads to an excess of 10 pressure steam that needs to be vented, or a de d for low-pressure steam that has to be supplied from a PRY. Condensing low... condensate. Other direct steam users like oil burners soot blowers and desalters are not in service. Condensate from the steam distribution system is returned to the boiler house in two ways. For large steam users with modulating pressure, steam drums...

  1. 1992 National census for district heating, cooling and cogeneration

    SciTech Connect (OSTI)

    Not Available

    1993-07-01

    District energy systems are a major part of the energy use and delivery infrastructure of the United States. With nearly 6,000 operating systems currently in place, district energy represents approximately 800 billion BTU per hour of installed thermal production capacity, and provides over 1.1 quadrillion BTU of energy annually -- about 1.3% of all energy used in the US each year. Delivered through more that 20,000 miles of pipe, this energy is used to heat and cool almost 12 billion square feet of enclosed space in buildings that serve a diverse range of office, education, health care, military, industrial and residential needs. This Census is intended to provide a better understanding of the character and extent of district heating, cooling and cogeneration in the United States. It defines a district energy system as: Any system that provides thermal energy (steam, hot water, or chilled water) for space heating, space cooling, or process uses from a central plant, and that distributes the energy to two or more buildings through a network of pipes. If electricity is produced, the system is a cogenerating facility. The Census was conducted through surveys administered to the memberships of eleven national associations and agencies that collectively represent the great majority of the nation`s district energy system operators. Responses received from these surveys account for about 11% of all district systems in the United States. Data in this report is organized and presented within six user sectors selected to illustrate the significance of district energy in institutional, community and utility settings. Projections estimate the full extent of district energy systems in each sector.

  2. Foam Cleaning of Steam Turbines 

    E-Print Network [OSTI]

    Foster, C.; Curtis, G.; Horvath, J. W.

    2000-01-01

    The efficiency and power output of a steam turbine can be dramatically reduced when deposits form on the turbine blades. Disassembly and mechanical cleaning of the turbine is very time consuming and costly. Deposits can be removed from the turbine...

  3. Facilities Usage Policy Page 1 of 2 100.1 Facilities Usage Policy

    E-Print Network [OSTI]

    Yang, Eui-Hyeok

    Facilities Usage Policy Page 1 of 2 100.1 Facilities Usage Policy Approval Authority" in Section 4 Effective: 15 January 2010 1. Policy Statement Use of facilities is consistent with furthering the mission, goals, and objectives of the university. This policy sets the guidelines for facility usage

  4. UNITED STATES DISTRICT COURT EASTERN DISTRICT OF CALIFORNIA -FRESNO

    E-Print Network [OSTI]

    Hansen, James E.

    UNITED STATES DISTRICT COURT EASTERN DISTRICT OF CALIFORNIA - FRESNO CENTRAL VALLEY CHRYSLER Report, Abridged Text with all 48 Figures was submitted to United States District Court, Eastern District, decreased snow-pack in certain mountain ranges, increased strength of storms driven by latent heat

  5. Development and Application of Advanced Models for Steam Hydrogasification: Process Design and Economic Evaluation

    E-Print Network [OSTI]

    Lu, Xiaoming

    2012-01-01

    to make additional steam for the steam turbine cycle. Thein multi-pressure-level steam turbines to produce additionalthe superheated steam to the steam turbine cycle. The most

  6. Steam reforming catalyst

    DOE Patents [OSTI]

    Kramarz, Kurt W. (Murrysville, PA); Bloom, Ira D. (Bolingbrook, IL); Kumar, Romesh (Naperville, IL); Ahmed, Shabbir (Bolingbrook, IL); Wilkenhoener, Rolf (Oakbrook Terrace, IL); Krumpelt, Michael (Naperville, IL)

    2001-01-01

    A method of forming a hydrogen rich gas from a source of hydrocarbon fuel. A vapor of the hydrocarbon fuel and steam is brought in contact with a two-part catalyst having a dehydrogenation powder portion and an oxide-ion conducting powder portion at a temperature not less than about 770.degree.C. for a time sufficient to generate the hydrogen rich. The H.sub.2 content of the hydrogen gas is greater than about 70 percent by volume. The dehydrogenation portion of the catalyst includes a group VIII metal, and the oxide-ion conducting portion is selected from a ceramic oxide from the group crystallizing in the fluorite or perovskite structure and mixtures thereof. The oxide-ion conducting portion of the catalyst is a ceramic powder of one or more of ZrO.sub.2, CeO.sub.2, Bi.sub.2 O.sub.3, (BiVO).sub.4, and LaGaO.sub.3.

  7. Use of GTE-65 gas turbine power units in the thermal configuration of steam-gas systems for the refitting of operating thermal electric power plants

    SciTech Connect (OSTI)

    Lebedev, A. S.; Kovalevskii, V. P.; Getmanov, E. A.; Ermaikina, N. A.

    2008-07-15

    Thermal configurations for condensation, district heating, and discharge steam-gas systems (PGU) based on the GTE-65 gas turbine power unit are described. A comparative multivariant analysis of their thermodynamic efficiency is made. Based on some representative examples, it is shown that steam-gas systems with the GTE-65 and boiler-utilizer units can be effectively used and installed in existing main buildings during technical refitting of operating thermal electric power plants.

  8. Consider Steam Turbine Drives for Rotating Equipment | Department...

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

    Steam Turbine Drives for Rotating Equipment Consider Steam Turbine Drives for Rotating Equipment This tip sheet outlines the benefits of steam turbine drives for rotating equipment...

  9. Use Steam Jet Ejectors or Thermocompressors to Reduce Venting of Low-Pressure Steam

    SciTech Connect (OSTI)

    Not Available

    2005-09-01

    Industrial Technologies Program's BestPractices tip sheet on improving efficiency of industrial steam systems by recovery latent heat from low-pressure steam.

  10. Steam Pressure Reduction, Opportunities, and Issues

    SciTech Connect (OSTI)

    Berry, Jan [ORNL; Griffin, Mr. Bob [Enbridge Gas Distribution, Inc.; Wright, Anthony L [ORNL

    2006-01-01

    Steam pressure reduction has the potential to reduce fuel consumption for a minimum capital investment. When the pressure at the boiler is reduced, fuel and steam are saved as a result of changes in the high-pressure side of the steam system from the boiler through the condensate return system. In the boiler plant, losses from combustion, boiler blowdown, radiation, and steam venting from condensate receivers would be reduced by reducing steam pressure. Similarly, in the steam distribution system, losses from radiation, flash steam vented from condensate receivers, and component and steam trap leakage would also be reduced. There are potential problems associated with steam pressure reduction, however. These may include increased boiler carryover, boiler water circulation problems in watertube boilers, increased steam velocity in piping, loss of power in steam turbines, and issues with pressure reducing valves. This paper is based a Steam Technical Brief sponsored by the U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy and Enbridge Gas Distribution, Inc. (5). An example illustrates the use of DOE BestPractices Steam System Assessment Tool to model changes in steam, fuel, electricity generation, and makeup water and to estimate resulting economic benefits.

  11. Land O'Lakes Shaves Gas Usage through Steam System In-Plant Training

    Broader source: Energy.gov [DOE]

    Twelve participants from 6 different facilities learned and practiced energy efficiency assessment skills during the recent in-plant training at a Land O'Lakes dairy plant in Carlisle, Pennsylvania...

  12. Use Steam Jet Ejectors or Thermoscompressors to Reduce Venting of Low-Pressure Steam - Steam Tip Sheet #29

    SciTech Connect (OSTI)

    2012-01-01

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

  13. STeam Injected Piston Engine Troels Hrding Pedersen Bjrn Kjellstrm

    E-Print Network [OSTI]

    .............................................................19 Reduction of NOx-formation by steam injection

  14. Material impacts on operational energy usage

    E-Print Network [OSTI]

    Love, Andrea, S.M. Massachusetts Institute of Technology

    2011-01-01

    Decisions regarding materials and construction of a building are made all the time in the architectural process, but thought is not always given to how those choices may affect the buildings ultimate energy usage and the ...

  15. Steam Cracker Furnace Energy Improvements 

    E-Print Network [OSTI]

    Gandler, T.

    2010-01-01

    ? Energy efficiency improvements Overview Baytown Olefins Plant Page 3 Baytown Complex ?One of world?s largest integrated, most technologically advanced petroleum/petrochemical complexes ?~3,400 acres along Houston Ship Channel, ~ 25 mi. east... Furnace tube hydrocarbon + steam 0 0.2 0.4 0.6 0.8 1 1.2 1 2 time C o k e l a y e r Page 8 Steam Cracker Furnace Energy Efficiency ? Overall energy efficiency of furnace depends on ? Run length or % of time furnace is online (more...

  16. Steam Systems | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergyPlan | Department of Energy 1 DOE| Department ofSteam SystemSteam Systems

  17. Energy Savings Through Steam Trap Management 

    E-Print Network [OSTI]

    Gibbs, C.

    2008-01-01

    of continuous monitoring. In addition to energy loss failed open steam traps that go undetected can cause steam system issues. Over pressure on deairator tanks and return lines, electric condensate pump cavitation, and back pressure from undersized vent...

  18. Steam Conservation and Boiler Plant Efficiency Advancements 

    E-Print Network [OSTI]

    Fiorino, D. P.

    2000-01-01

    This paper examines several cost-effective steam conservation and boiler plant efficiency advancements that were implemented during a recently completed central steam boiler plant replacement project at a very large semiconductor manufacturing...

  19. Steam-sieve method and apparatus

    SciTech Connect (OSTI)

    Newby, G. R.

    1984-05-21

    Steam is compressed and heated to make a churn gas that is rife in synthetic fuel, and hydrogen and oxygen are sifted from the churn gas before the steam is recycled.

  20. The Future of Steam: A Preliminary Discussion 

    E-Print Network [OSTI]

    Russell, C.; Harrell, G.; Moore, J.; French, S.

    2001-01-01

    Steam production represents a significant proportion of today's industrial energy demand. But the evolution of process technologies, as well as turbulence in energy markets, suggests that steam's role may be subject to change in the next decade...

  1. Steam System Balancing and Tuning for Multifamily Residential Buildings in Chicagoland - Second Year of Data Collection

    SciTech Connect (OSTI)

    Choi, J.; Ludwig, P.; Brand, L.

    2013-08-01

    Steam heated buildings often suffer from uneven heating as a result of poor control of the amount of steam entering each radiator. In order to satisfy the heating load to the coldest units, other units are overheated. As a result, some tenants complain of being too hot and open their windows in the middle of winter, while others complain of being too cold and are compelled to use supplemental heat sources. Building on previous research, CNT Energy identified 10 test buildings in Chicago and conducted a study to identify best practices for the methodology, typical costs, and energy savings associated with steam system balancing. A package of common steam balancing measures was assembled and data were collected on the buildings before and after these retrofits were installed to investigate the process, challenges, and the cost effectiveness of improving steam systems through improved venting and control systems. The test buildings that received venting upgrades and new control systems showed 10.2% savings on their natural gas heating load, with a simple payback of 5.1 years. The methodologies for and findings from this study are presented in detail in this report. This report has been updated from a version published in August 2012 to include natural gas usage information from the 2012 heating season and updated natural gas savings calculations.

  2. "Greening" Industrial Steam Generation via On-demand Steam Systems 

    E-Print Network [OSTI]

    Smith, J. P.

    2010-01-01

    boiler technology currently in service in the U.S., it is critical to raise awareness and examine the role of emerging new technologies to address the energy and environmental challenges inherent with steam generation. In the same way that tank-less...

  3. DOE's BestPractices Steam End User Training Steam End User Training

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    DOE's BestPractices Steam End User Training Steam End User Training Navigational Tutorial - 1 8/27/2010 Steam End User Training Navigational Tutorial Module Slide 1 ­ Introduction Hello, and welcome to the Steam End User Training. I would like to take a few minutes to show you how to navigate through

  4. DOE's BestPractices Steam End User Training Steam End User Training

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    DOE's BestPractices Steam End User Training Steam End User Training Introduction Module - 1 8/27/2010 Steam End User Training Introduction Module Slide 1 - Introduction Title Page Hello, and welcome to the Steam System End User training. In this training, we will investigate how to assess, evaluate

  5. Identifying Steam Opportunity "Impact" Inputs for the Steam System Assessment Tool (SSAT) 

    E-Print Network [OSTI]

    Harrell, G.; Jendrucko, R.; Wright, A.

    2004-01-01

    The U.S. DOE BestPractices Steam "Steam System Assessment Tool" (SSAT) is a powerful tool for quantifying potential steam improvement opportunities in steam systems. However, all assessment tools are only as good as the validity of the modeling...

  6. STEAM-WATER RELATIVE PERMEABILITY A DISSERTATION

    E-Print Network [OSTI]

    Stanford University

    STEAM-WATER RELATIVE PERMEABILITY A DISSERTATION SUBMITTED TO THE DEPARTMENT OF PETROLEUM Laboratory. iv #12;ABSTRACT Steam-water relative permeability curves are required for mathematical models of two-phase geothermal reservoirs. In this study, drainage steam- water relative permeabilities were

  7. Best Management Practice #8: Steam Boiler Systems

    Broader source: Energy.gov [DOE]

    Boilers and steam generators are commonly used in large heating systems, institutional kitchens, or in facilities where large amounts of process steam are used. This equipment consumes varying amounts of water depending on system size, the amount of steam used, and the amount of condensate returned.

  8. World launch! Hot-Steam Aerostat

    E-Print Network [OSTI]

    Berlin,Technische Universität

    to the first operable balloon ever that became buoyant by means of superheated steam. The performance of Hei-light and flocked insulation material superheated steam could be maintained also close to the envelopeInfo HeiDAS UH World launch! Hot-Steam Aerostat #12;"If you intend to view the land, if you plan

  9. Materials Performance in USC Steam

    SciTech Connect (OSTI)

    G. R. Holcomb, P. Wang, P. D. Jablonski, and J. A. Hawk

    2010-05-01

    The proposed steam inlet temperature in the Advanced Ultra Supercritical (A-USC) steam turbine is high enough (760 °C) that traditional turbine casing and valve body materials such as ferritic/martensitic steels will not suffice due to temperature limitations of this class of materials. Cast versions of several traditionally wrought Ni-based superalloys were evaluated for use as casing or valve components for the next generation of industrial steam turbines. The full size castings are substantial: 2-5,000 kg each half and on the order of 100 cm thick. Experimental castings were quite a bit smaller, but section size was retained and cooling rate controlled to produce equivalent microstructures. A multi-step homogenization heat treatment was developed to better deploy the alloy constituents. The most successful of these cast alloys in terms of creep strength (Haynes 263, Haynes 282, and Nimonic 105) were subsequently evaluated by characterizing their microstructure as well as their steam oxidation resistance (at 760 and 800 °C).

  10. Generating Steam by Waste Incineration 

    E-Print Network [OSTI]

    Williams, D. R.; Darrow, L. A.

    1981-01-01

    Combustible waste is a significant source of steam at the new John Deere Tractor Works assembly plant in Waterloo, Iowa. The incinerators, each rated to consume two tons of solid waste per hour, are expected to provide up to 100 percent of the full...

  11. Steam cooling system for a gas turbine

    DOE Patents [OSTI]

    Wilson, Ian David (Mauldin, SC); Barb, Kevin Joseph (Halfmoon, NY); Li, Ming Cheng (Cincinnati, OH); Hyde, Susan Marie (Schenectady, NY); Mashey, Thomas Charles (Coxsackie, NY); Wesorick, Ronald Richard (Albany, NY); Glynn, Christopher Charles (Hamilton, OH); Hemsworth, Martin C. (Cincinnati, OH)

    2002-01-01

    The steam cooling circuit for a gas turbine includes a bore tube assembly supplying steam to circumferentially spaced radial tubes coupled to supply elbows for transitioning the radial steam flow in an axial direction along steam supply tubes adjacent the rim of the rotor. The supply tubes supply steam to circumferentially spaced manifold segments located on the aft side of the 1-2 spacer for supplying steam to the buckets of the first and second stages. Spent return steam from these buckets flows to a plurality of circumferentially spaced return manifold segments disposed on the forward face of the 1-2 spacer. Crossover tubes couple the steam supply from the steam supply manifold segments through the 1-2 spacer to the buckets of the first stage. Crossover tubes through the 1-2 spacer also return steam from the buckets of the second stage to the return manifold segments. Axially extending return tubes convey spent cooling steam from the return manifold segments to radial tubes via return elbows.

  12. Slag monitoring system for combustion chambers of steam boilers

    SciTech Connect (OSTI)

    Taler, J.; Taler, D.

    2009-07-01

    The computer-based boiler performance system presented in this article has been developed to provide a direct and quantitative assessment of furnace and convective surface cleanliness. Temperature, pressure, and flow measurements and gas analysis data are used to perform heat transfer analysis in the boiler furnace and evaporator. Power boiler efficiency is calculated using an indirect method. The on-line calculation of the exit flue gas temperature in a combustion chamber allows for an on-line heat flow rate determination, which is transferred to the boiler evaporator. Based on the energy balance for the boiler evaporator, the superheated steam mass flow rate is calculated taking into the account water flow rate in attemperators. Comparing the calculated and the measured superheated steam mass flow rate, the effectiveness of the combustion chamber water walls is determined in an on-line mode. Soot-blower sequencing can be optimized based on actual cleaning requirements rather than on fixed time cycles contributing to lowering of the medium usage in soot blowers and increasing of the water-wall lifetime.

  13. EVALUATION OF A SULFUR OXIDE CHEMICAL HEAT STORAGE PROCESS FOR A STEAM SOLAR ELECTRIC PLANT

    E-Print Network [OSTI]

    Dayan, J.

    2011-01-01

    I Saturated Steam L ___ _ Superheated Steam XBL793-949 Fig.water and generate superheated steam at 144 atmospheres (

  14. Closed loop steam cooled airfoil

    DOE Patents [OSTI]

    Widrig, Scott M.; Rudolph, Ronald J.; Wagner, Gregg P.

    2006-04-18

    An airfoil, a method of manufacturing an airfoil, and a system for cooling an airfoil is provided. The cooling system can be used with an airfoil located in the first stages of a combustion turbine within a combined cycle power generation plant and involves flowing closed loop steam through a pin array set within an airfoil. The airfoil can comprise a cavity having a cooling chamber bounded by an interior wall and an exterior wall so that steam can enter the cavity, pass through the pin array, and then return to the cavity to thereby cool the airfoil. The method of manufacturing an airfoil can include a type of lost wax investment casting process in which a pin array is cast into an airfoil to form a cooling chamber.

  15. Steam Turbine Materials and Corrosion

    SciTech Connect (OSTI)

    Holcomb, G.H.; Hsu, D.H.

    2008-07-01

    Ultra-supercritical (USC) power plants offer the promise of higher efficiencies and lower emissions. Current goals of the U.S. Department of Energy’s Advanced Power Systems Initiatives include coal generation at 60% efficiency, which would require steam temperatures of up to 760 °C. In prior years this project examined the steamside oxidation of alloys for use in high- and intermediate-pressure USC turbines. This steamside oxidation research is continuing and progress is presented, with emphasis on chromia evaporation.

  16. VEHICLE USAGE AGREEMENT DEPARTMENT OF BIOLOGICAL SCIENCE

    E-Print Network [OSTI]

    Ronquist, Fredrik

    VEHICLE USAGE AGREEMENT DEPARTMENT OF BIOLOGICAL SCIENCE All drivers of vehicles must certify to the following: 1. I certify that I have a valid driver's license appropriate for the vehicle type and will abide belts. 2. I have read and understand the vehicle operating policies and procedures as defined

  17. EART 265 Lecture Notes: Energy Energy Usage

    E-Print Network [OSTI]

    Nimmo, Francis

    densities. On a per greenhouse warming potential basis, natural gas is better than other fuels because/4 of the worldwide energy usage, and with 1/20th of the world population gives a global average power consumption of 2 kW. Euro- pean countries tend to use less energy per capita by a factor of 2. China's per capita

  18. Balanced Codon Usage Optimizes Eukaryotic Translational Efficiency

    E-Print Network [OSTI]

    Zhang, Jianzhi

    Balanced Codon Usage Optimizes Eukaryotic Translational Efficiency Wenfeng Qian1 , Jian-Rong Yang1, Guangzhou, China Abstract Cellular efficiency in protein translation is an important fitness determinant and that translational efficiency is maximized by the exclusive use of rapidly translated codons. Here we estimate

  19. USAGE-BASED PRICING DIFFERENTIATION FOR

    E-Print Network [OSTI]

    Huang, Jianwei

    cost, complex pricing schemes are not "customer- friendly" and discourage customers from usingCHAPTER 1 USAGE-BASED PRICING DIFFERENTIATION FOR COMMUNICATION NETWORKS: INCOMPLETE INFORMATION AND LIMITED PRICING CHOICES Shuqin Li, Ph.D.1 and Jianwei Huang, Ph.D.2 1 Research and Innovation, Alcatel

  20. International District Energy Association

    Broader source: Energy.gov [DOE]

    Since its formation in 1909, the International District Energy Association (IDEA) has served as a principal industry advocate and management resource for owners, operators, developers, and suppliers of district heating and cooling systems in cities, campuses, bases, and healthcare facilities. Today, with over 1,400 members in 26 countries, IDEA continues to organize high-quality technical conferences that inform, connect, and advance the industry toward higher energy efficiency and lower carbon emissions through innovation and investment in scalable sustainable solutions. With the support of DOE, IDEA performs industry research and market analysis to foster high impact projects and help transform the U.S. energy industry. IDEA was an active participant in the original Vision and Roadmap process and has continued to partner with DOE on combined heat and power (CHP) efforts across the country.

  1. Optical steam quality measurement system and method

    DOE Patents [OSTI]

    Davidson, James R.; Partin, Judy K.

    2006-04-25

    An optical measurement system is presented that offers precision on-line monitoring of the quality of steam. Multiple wavelengths of radiant energy are passed through the steam from an emitter to a detector. By comparing the amount of radiant energy absorbed by the flow of steam for each wavelength, a highly accurate measurement of the steam quality can be determined on a continuous basis in real-time. In an embodiment of the present invention, the emitter, comprises three separate radiant energy sources for transmitting specific wavelengths of radiant energy through the steam. In a further embodiment, the wavelengths of radiant energy are combined into a single beam of radiant energy for transmission through the steam using time or wavelength division multiplexing. In yet a further embodiment, the single beam of radiant energy is transmitted using specialized optical elements.

  2. Benchmark the Fuel Cost of Steam Generation - Steam Tip Sheet #15

    SciTech Connect (OSTI)

    2012-01-01

    This revised AMO tip sheet on benchmarking the fuel cost of steam provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  3. Steam Technical Brief: How to Calculate the True Cost of Steam

    SciTech Connect (OSTI)

    2010-06-25

    This BestPractice Steam Technical Brief helps you calculate the true cost of steam. Knowing the correct cost is important for many reasons and all of them have to do with improving the company's bottom line.

  4. Use Steam Jet Ejectors or Thermocompressors to Reduce Venting of Low-Pressure Steam

    SciTech Connect (OSTI)

    Not Available

    2006-01-01

    This revised ITP tip sheet on steam jet ejectors and thermocompressors provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  5. The Steam System Assessment Tool (SSAT): Estimating Steam System Energy, Cost, and Emission Savings 

    E-Print Network [OSTI]

    Wright, A.; Bealing, C.; Eastwood, A.; Tainsh, R.; Hahn, G.; Harrell, G.

    2003-01-01

    The U. S. Department of Energy's (DOE) Industrial Technology Program BestPractices Steam effort is developing a number of software tools to assist industrial energy users to improve the efficiency of their steam system. A major new Best...

  6. Steam Management- The 3M Approach 

    E-Print Network [OSTI]

    Renz, R. L.

    2000-01-01

    by utilizing air vents. ? Steam traps on siphon-drained revolving drying drums frequently operate incorrectly in this application. Automatic differential condensate controllers are being installed on these drums. ? Automatic air vents are also being... and overcooling the drum, which required irJcreased steam for reheat downstream as a consequence. Improved temperature control was added to the cooling portion of the process. ? Flash steam from condensate receivers is reused for low temperature applications...

  7. Method of steam reforming methanol to hydrogen

    DOE Patents [OSTI]

    Beshty, Bahjat S. (Lower Makefield, PA)

    1990-01-01

    The production of hydrogen by the catalyzed steam reforming of methanol is accomplished using a reformer of greatly reduced size and cost wherein a mixture of water and methanol is superheated to the gaseous state at temperatures of about 800.degree. to about 1,100.degree. F. and then fed to a reformer in direct contact with the catalyst bed contained therein, whereby the heat for the endothermic steam reforming reaction is derived directly from the superheated steam/methanol mixture.

  8. Report on Preliminary Engineering Study for Installation of an Air Cooled Steam Condenser at Brawley Geothermal Plant, Unit No. 1

    SciTech Connect (OSTI)

    1982-03-01

    The Brawley Geothermal Project comprises a single 10 MW nominal geothermal steam turbine-generator unit which has been constructed and operated by the Southern California Edison Company (SCE). Geothermal steam for the unit is supplied through contract by Union Oil Company which requires the return of all condensate. Irrigation District (IID) purchases the electric power generated and provides irrigation water for cooling tower make-up to the plant for the first-five years of operation, commencing mid-1980. Because of the unavailability of irrigation water from IID in the future, SCE is investigating the application and installation of air cooled heat exchangers in conjunction with the existing wet (evaporative) cooling tower with make-up based on use of 180 gpm (nominal) of the geothermal condensate which may be made available by the steam supplier.

  9. ,"Total District Heat Consumption (trillion Btu)",,,,,"District...

    U.S. Energy Information Administration (EIA) Indexed Site

    Heat Consumption (trillion Btu)",,,,,"District Heat Energy Intensity (thousand Btusquare foot)" ,"Total ","Space Heating","Water Heating","Cook- ing","Other","Total ","Space...

  10. Loss of feed flow, steam generator tube rupture and steam line break thermohydraulic experiments

    SciTech Connect (OSTI)

    Mendler, O J; Takeuchi, K; Young, M Y

    1986-10-01

    The Westinghouse Model Boiler No. 2 (MB-2) steam generator test model at the Engineering Test Facility in Tampa, Florida, was reinstrumented and modified for performing a series of tests simulating steam generator accident transients. The transients simulated were: loss of feed flow, steam generator tube rupture, and steam line break events. This document presents a description of (1) the model boiler and the associated test facility, (2) the tests performed, and (3) the analyses of the test results.

  11. Steam Technical Brief: Industrial Heat Pumps for Steam and Fuel Savings

    SciTech Connect (OSTI)

    2010-06-25

    The purpose of this Steam Techcial Brief is to introduce heat-pump technology and its applicaiton in industrial processes.

  12. Industrial Heat Pumps for Steam and Fuel Savings: A BestPractices Steam Technical Brief

    SciTech Connect (OSTI)

    Not Available

    2003-06-01

    The purpose of this Steam Techcial Brief is to introduce heat-pump technology and its applicaiton in industrial processes.

  13. Covered Product Category: Commercial Steam Cookers

    Broader source: Energy.gov [DOE]

    The Federal Energy Management Program (FEMP) provides acquisition guidance for commercial steam cookers, which are covered by the ENERGY STAR program.

  14. Minimize Boiler Blowdown - Steam Tip Sheet #9

    SciTech Connect (OSTI)

    2012-01-31

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

  15. Achieve Steam System Excellence: Industrial Technologies Program...

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

    in plant improvement projects. * Steam System Opportunity Assessment for the Pulp and Paper, Chemical Manufacturing, and Petroleum Refining Industries (1) defines the volume and...

  16. Capturing Energy Savings with Steam Traps 

    E-Print Network [OSTI]

    Bockwinkel, R. G.; French, S. A.

    1997-01-01

    , flanges and other connections. The economic loss can be significant. To appre ciate the massive economic impact of wasting steam, let's again look at the very small trap leak on 30 pound pressure typical for many process applications. Chart 1 shows... how much steam will be lost each hour from various size orifices and pressure ranges and the example calcula tions show how much steam is lost per year. Chart 1. Steam Loss Comparison For Various Pressures and Orifice Sizes Drip &Tracer Traps "1...

  17. Pre-In-Plant Training Webinar (Steam)

    Broader source: Energy.gov [DOE]

    This pre-In-Plant training webinar for the Better Plants Program covers how to find energy savings in steam systems.

  18. Designing an ultrasupercritical steam turbine

    SciTech Connect (OSTI)

    Klotz, H.; Davis, K.; Pickering, E.

    2009-07-15

    Carbon emissions produced by the combustion of coal may be collected and stored in the future, but a better approach is to reduce the carbon produced through efficient combustion technologies. Increasing the efficiency of new plants using ultrasupercritical (USC) technology will net less carbon released per megawatt-hour using the world's abundant coal reserves while producing electricity at the lowest possible cost. The article shows how increasing the steam turbine operating conditions for a new USC project in the USA and quantify the potential CO{sub 2} reduction this advanced design makes possible. 7 figs., 3 tabs.

  19. Preliminary Results from the Industrial Steam System Market Assessment 

    E-Print Network [OSTI]

    McGrath, G. P.; Wright, A. L.

    2002-01-01

    This paper discusses fuel use and potential energy savings in the steam systems of three steam intensive industries: pulp and paper, chemical manufacturing, and petroleum refining. To determine the energy consumption to generate steam...

  20. Benchmark the Fuel Cost of Steam Generation | Department of Energy

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

    Benchmark the Fuel Cost of Steam Generation Benchmark the Fuel Cost of Steam Generation This tip sheet on benchmarking the fuel cost of steam provides how-to advice for improving...

  1. Energy Savings with Computerized Steam Trap Maintenance Program 

    E-Print Network [OSTI]

    Klidzejs, A. M.

    1994-01-01

    This paper describes the efforts made at 3M Company plants to save energy in the steam distribution system by improving the maintenance of steam traps. The results from steam trap surveys for 17 facilities with over 6,400 ...

  2. Effective Steam Trap Selection/Maintenance - Its Payback 

    E-Print Network [OSTI]

    Garcia, E.

    1984-01-01

    In oil refineries and petrochemical plants large number of steam traps are used to discharge condensate from steam mains, tracers and process equipment. Early efforts on steam traps focused almost exclusively on their selection and sizing...

  3. Guideline For Retrieving Customer Usage Data From Utilities

    Broader source: Energy.gov [DOE]

    This webinar, held on Dec. 16, 2010, provides information for utilities interested in retrieving data on customer usage.

  4. The Impact of Residential Density on Vehicle Usage and Energy Consumption

    E-Print Network [OSTI]

    Golob, Thomas F.; Brownstone, David

    2005-01-01

    residential transportation energy usage is vital for theDensity on Vehicle Usage and Energy Consumption Table 2Density on Vehicle Usage and Energy Consumption with

  5. Software Dependability Evaluation Based on Markov Usage Models

    E-Print Network [OSTI]

    Gutjahr, Walter

    for computing optimal state transition probabilities for software tests, based on a Markov usage model; this distribution may also be used in the more general context of structural statistical testing of software, software usage models, software testing. 1 Introduction 1.1 Markov Software Usage Models In the last years

  6. Usage Policies Notebook for 2 inch Nano Furnace Revision date

    E-Print Network [OSTI]

    Mease, Kenneth D.

    Usage Policies Notebook for 2 inch Nano Furnace Revision date September 2014 #12;2 Emergency Plan for 2 inch Nano Furnace Standard Operating Procedures for Emergencies Contact information Person Phone;4 Usage Policies for 2 inch Nano Furnace Standard policies for usage The nano furnace can accept up to 2

  7. Usage Policies Notebook for Thermco Atmospheric Diffusion Furnace system

    E-Print Network [OSTI]

    Mease, Kenneth D.

    Usage Policies Notebook for Thermco Atmospheric Diffusion Furnace system Revision date September 2014 #12;2 Emergency Plan for Diffusion Furnaces Standard Operating Procedures for Emergencies Contact;4 Usage Policies for Thermco Atmospheric Diffusion Furnace Standard policies for usage The Atmospheric

  8. Predictive usage mining for life cycle assessment Jungmok Ma a

    E-Print Network [OSTI]

    Kim, Harrison

    Predictive usage mining for life cycle assessment Jungmok Ma a , Harrison M. Kim b, a Department e i n f o Article history: Keywords: Life cycle assessment Usage modeling Time series segmentation Time series analysis a b s t r a c t The usage modeling in life cycle assessment (LCA) is rarely

  9. Cryptographic Link Signatures for Spectrum Usage Authentication in Cognitive Radio

    E-Print Network [OSTI]

    Du, Wenliang "Kevin"

    Cryptographic Link Signatures for Spectrum Usage Authentication in Cognitive Radio Xi Tan, Kapil the usage of the spectrum to avoid interference with the primary user. However, achieving a trustworthy this attack, there should be a way to authenticate primary users' spectrum usage. We propose a method

  10. A Multilingual Usage Consultation Tool Based on Internet Searching

    E-Print Network [OSTI]

    Nakagawa, Hiroshi

    present a usage consultation tool, based on Internet searching, for language learners. When a user enters terms in dictionar- ies. Another way to search for information on usage is to use the KWIC (Key WordA Multilingual Usage Consultation Tool Based on Internet Searching -More than a search engine, less

  11. Compressed and Liquid Gas Usage Policy Faculty must fill out and submit the gas usage form when picking up compressed

    E-Print Network [OSTI]

    Manley, Steven L.

    Compressed and Liquid Gas Usage Policy · Faculty must fill out and submit the gas usage form when for gases in the future. Effective July 1, 2011 College of Natural Sciences and Mathematics Approved

  12. Design and Performance Aspects of Steam Generators 

    E-Print Network [OSTI]

    Ganapathy, V.

    1994-01-01

    generators are "standard" or "off-the-shelf items", that there exists a model number for a given steam capacity and one has to live with whatever performance is offered by the boiler vendor. Unfortunately, boiler suppliers also encourage specifying of steam...

  13. Energy Management - Using Steam Pressure Efficiently 

    E-Print Network [OSTI]

    Jiandani, N.

    1983-01-01

    Saturated steam contains heat in two different forms. Sensible heat and latent heat. Due to the nature of this vapor, the relative proportion of latent heat is higher at lower pressures compared to higher pressures. When steam is used for heating...

  14. Dow Chemical Company: Assessment Leads to Steam System Energy...

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

    Dow Chemical Company: Assessment Leads to Steam System Energy Savings in a Petrochemical Plant Dow Chemical Company: Assessment Leads to Steam System Energy Savings in a...

  15. Steam System Opportunity Assessment for the Pulp and Paper, Chemical...

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

    Steam System Opportunity Assessment for the Pulp and Paper, Chemical Manufacturing, and Petroleum Refining Industries Steam System Opportunity Assessment for the Pulp and Paper,...

  16. Steam System Opportunity Assessment for the Pulp and Paper, Chemical...

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

    Energy U.S. Department of Energy Steam System Opportunity Assessment for the Pulp and Paper, Chemical Manufacturing, and Petroleum Refining Industries Steam System Opportunity...

  17. Appendices: Steam System Opportunity Assessment for the Pulp...

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

    Energy U.S. Department of Energy Steam System Opportunity Assessment for the Pulp and Paper, Chemical Manufacturing, and Petroleum Refining Industries Steam System Opportunity...

  18. Improving Steam System Performance: A Sourcebook for Industry...

    Office of Environmental Management (EM)

    Second Edition (October 2012) More Documents & Publications Flash High-Pressure Condensate to Regenerate Low-Pressure Steam Deaerators in Industrial Steam Systems Insulate...

  19. Insulate Steam Distribution and Condensate Return Lines, Energy...

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

    2 Insulate Steam Distribution and Condensate Return Lines Uninsulated steam distribution and condensate return lines are a constant source of wasted energy. The table shows typical...

  20. An Object-Oriented Algebraic Steam-Boiler Control Specification

    E-Print Network [OSTI]

    Ã?lveczky, Peter Csaba

    An Object-Oriented Algebraic Steam-Boiler Control Specification computations cannot happen. 1 Introduction The steam-boiler control specification problem has been

  1. Steam Pressure Reduction: Opportunities and Issues; A BestPractices...

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

    domestic hot water, sterilization autoclaves, and air makeup coils. Oversized boiler plants and steam distribution systems utilizing saturated steam are potential...

  2. Improving Steam System Performance: A Sourcebook for Industry...

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

    Improving Steam System Performance: A Sourcebook for Industry, Second Edition Improving Steam System Performance: A Sourcebook for Industry, Second Edition This sourcebook is...

  3. Deaerators in Industrial Steam Systems | Department of Energy

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

    in Industrial Steam Systems (January 2012) More Documents & Publications Improving Steam System Performance: A Sourcebook for Industry, Second Edition Consider Installing a...

  4. Industrial Steam System Heat-Transfer Solutions | Department...

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

    Industrial Steam System Heat-Transfer Solutions Industrial Steam System Heat-Transfer Solutions This brief provides an overview of considerations for selecting the best...

  5. BILIWG Meeting: High Pressure Steam Reforming of Bio-Derived...

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

    High Pressure Steam Reforming of Bio-Derived Liquids (Presentation) BILIWG Meeting: High Pressure Steam Reforming of Bio-Derived Liquids (Presentation) Presented at the 2007...

  6. District Energy Technologies | Department of Energy

    Office of Environmental Management (EM)

    through the centralized system. District energy systems often operate with combined heat and power (CHP) and waste heat recovery technologies. Learn more about district energy...

  7. Litchfield Correctional Center District Heating Low Temperature...

    Open Energy Info (EERE)

    Litchfield Correctional Center District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Litchfield Correctional Center District Heating Low Temperature...

  8. Dawson Power District | Open Energy Information

    Open Energy Info (EERE)

    Dawson Power District Jump to: navigation, search Name: Dawson Power District Place: Nebraska Phone Number: 308-324-2386 Website: dawsonpower.com Twitter: @DawsonPower Facebook:...

  9. Circumferential cracking of steam generator tubes

    SciTech Connect (OSTI)

    Karwoski, K.J.

    1997-04-01

    On April 28, 1995, the U.S. Nuclear Regulatory Commission (NRC) issued Generic Letter (GL) 95-03, {open_quote}Circumferential Cracking of Steam Generator Tubes.{close_quote} GL 95-03 was issued to obtain information needed to verify licensee compliance with existing regulatory requirements regarding the integrity of steam generator tubes in domestic pressurized-water reactors (PWRs). This report briefly describes the design and function of domestic steam generators and summarizes the staff`s assessment of the responses to GL 95-03. The report concludes with several observations related to steam generator operating experience. This report is intended to be representative of significant operating experience pertaining to circumferential cracking of steam generator tubes from April 1995 through December 1996. Operating experience prior to April 1995 is discussed throughout the report, as necessary, for completeness.

  10. Steam drying of products containing solvent mixtures

    SciTech Connect (OSTI)

    Pothmann, E.; Schluender, E.U. [Univ. Karlsruhe (Germany). Inst. fuer Thermische Verfahrenstechnik

    1995-12-31

    Drying experiments with single, porous spheres wetted with mixtures of 2-propanol and water were performed using superheated steam, air, or steam-air mixtures as drying agent. Both the drying rate and the moisture composition were determined experimentally for different temperatures and compositions of the drying agent and for different initial compositions of the moisture. It is shown that evaporation of 2-propanol is enhanced by using superheated steam as drying agent instead of air due to steam condensing on the sample. While the overall drying rate increases with rising steam temperature, the evaporation rate of 2-propanol is hardly affected. When drying samples containing mixtures of 2-propanol and water, internal boiling can occur depending on the vapor-liquid equilibrium. Vapor generated inside the sample may cause mechanical dewatering of the sample which greatly increases the drying rate.

  11. Customizing pays off in steam generators

    SciTech Connect (OSTI)

    Ganapathy, V. (ABCO Industries, Inc., Abilene, TX (United States))

    1995-01-01

    Packaged steam generators are the workhorses of chemical process plants, power plants and cogeneration systems. They are available as oil- or gas-fired models, and are used to generate either high-pressure superheated steam (400 to 1,200 psig, at 500 to 900 F) or saturated steam at low pressures (100 to 300 psig). In today's emission- and efficiency- conscious environment, steam generators have to be custom designed. Gone are the days when a boiler supplier--or for that matter an end user--could look up a model number from a list of standard sizes and select one for a particular need. Thus, before selecting a system, it is desirable to know the features of oil- and gas-fired steam generators, and the important variables that influence their selection, design and performance. It is imperative that all of these data are supplied to the boiler supplier so that the engineers may come up with the right design. Some of the parameters which are discussed in this paper are: duty, steam temperature, steam purity, emissions, and furnace design. Superheaters, economizers, and overall performance are also discussed.

  12. Optimization of the Energy Usage at CERN

    E-Print Network [OSTI]

    Burckhart, H J; Caspers, F; Doré, V; Gatignon, L; Martel, C; Nonis, M; Tommasini, D

    2013-01-01

    Some of the efforts of CERN to optimize its energy usage are presented. Work is proceeding in several areas: campus and infrastructure, accelerators and beam lines, as well as R&D for future accelerators. The existing building stock is being renovated and new buildings apply an integrated energy concept. The energy efficiency of the accelerators and beam lines can be further enhanced by powering more equipment dynamically only during the time it is really needed. For designing new accelerators novel approaches are being investigated to re-use energy which in today’s installations gets dumped thermally.

  13. An assessment of worldwide supercomputer usage

    SciTech Connect (OSTI)

    Wasserman, H.J.; Simmons, M.L.; Hayes, A.H.

    1995-01-01

    This report provides a comparative study of advanced supercomputing usage in Japan and the United States as of Spring 1994. It is based on the findings of a group of US scientists whose careers have centered on programming, evaluating, and designing high-performance supercomputers for over ten years. The report is a follow-on to an assessment of supercomputing technology in Europe and Japan that was published in 1993. Whereas the previous study focused on supercomputer manufacturing capabilities, the primary focus of the current work was to compare where and how supercomputers are used. Research for this report was conducted through both literature studies and field research in Japan.

  14. Light-gas effect on steam condensation

    SciTech Connect (OSTI)

    Anderson, M.H.; Corradini, M.L. [Univ. of Wisconsin, Madison, WI (United States); Herranz, L.E. [Centro de Investigcaiones Energeticas Medioambientales y Tecnologicas, Madrid (Spain)

    1997-12-01

    In a postulated reactor accident, the loss of coolant results in a release of high-temperature steam into the containment. Under these circumstances steam condensation onto containment walls provides an effective mechanism of energy removal. However, the presence of noncondensable gas is known to degrade the heat transfer. It has also been found that the introduction of a light noncondensable gas has little effect until sufficient quantities are present to disrupt the buoyancy forces. Our investigation shows the dramatic effect of high concentrations of light gas decreasing steam condensation rates under anticipated accident conditions for AP600, with helium as the simulant for hydrogen.

  15. Energy Conservation Through Effective Steam Trapping 

    E-Print Network [OSTI]

    Diamante, L.; Nagengast, C.

    1979-01-01

    the bottom edge and out, the bucket becomes bouyant, floats up, closes the valve and the flow stops. The slight static pressure the water around the bucket exerts on the steam inside will begin to drive it out through the small hole in the top we spoke... at which condensate is forming, thus steam will eventually flow into the trap. Steam unlike condensate, or air in a relative sense, is highly compressible and will undergo a substantial volume change in expanding from the inlet to outlet pressure...

  16. Electrical Cost Reduction Via Steam Turbine Cogeneration 

    E-Print Network [OSTI]

    Ewing, T. S.; Di Tullio, L. B.

    1991-01-01

    REDUCTION VIA STEAM TURBINE COGENERATION LYNN B. DI TULLIO, P.E. Project Engineer Ewing Power Systems, Inc. South Deerfield, Mass. ABSTRACT Steam turbine cogeneration is a well established technology which is widely used in industry. However... reducing valves with turbine generator sets in applications with flows as low as 4000 pounds of steam per hour. These systems produce electricity for $0.01 to $.02 per kWh (based on current costs of gas and oil); system cost is between $200 and $800 per...

  17. Internal combustion engine injection superheated steam

    SciTech Connect (OSTI)

    Mahoney, F.G.

    1991-01-22

    This patent describes a method for introducing water vapor to the combustion chambers of an internal combustion engine. It comprises: introducing a metered amount of liquid water into a heat exchanger; contacting the heat exchanger directly with hot exhaust gases emanating from the exhaust manifold; maintaining the water in the heat exchanger for a period sufficient to vaporize the water into steam and superheat same; reducing pressure and increasing temperature to create superheated steam; introducing the superheated steam into the air supply proximate to the air induction system, upstream of any carburetion, of the internal combustion engine.

  18. Groundwater Conservation Districts: Success Stories 

    E-Print Network [OSTI]

    Porter, Dana; Persyn, Russell A.; Enciso, Juan

    1999-09-06

    Plains UWCD No. 1 7 Sandy Land UWCD 8 South Plains UWCD 9 Garza County U and Fresh WCD 10 Salt Fork UWCD 11 Mesa UWCD 12 Permian Basin UWCD 13 Hudspeth County UWCD No. 1 14 Glasscock County UWCD 15 Sterling UWCD 16 Coke County UWCD 17 Santa... Activities Groundwater Conservation Districts vary in size, from partial county or single county districts to multiple county districts. Staffing levels vary from one part-time position to several full-time positions, depending upon the goals of the Boards...

  19. The Enbridge "Steam Saver" Program: Steam Boiler Plant Efficiency-Update to Year End 2005 

    E-Print Network [OSTI]

    Griffin, B.; Johnson, D.

    2006-01-01

    ” PROGRAM STEAM BOILER PLANT EFFICIENCY-UPDATE TO YEAR END, 2005 March 1, 2006 Bob Griffin, P.Eng., Energy Solutions Manager, Enbridge Gas Distribution Inc., Toronto, Ontario Daniel Johnson, B.A.Sc., Industrial Energy Engineer, Enbridge Gas Distribution... of Enbridge’s “Steam Saver” program first introduced in 1997. The goal of this program is to reduce fuel consumption in industrial steam plants and distribution systems. We have now completed 92 detailed boiler plant performance tests and audits...

  20. Reservoir performance characterized in mature steam pattern

    SciTech Connect (OSTI)

    Miller, D.D.; McPherson, J.G.; Covington, T.E.

    1989-04-01

    A detailed reservoir description provided new insight in an investigation of a ten-year-old steam flood. Mobil Oil Corporation conducted this study of the Pleistocene upper Tulare sands in South Belridge field, located in the San Joaquin basin, Kern County, California. The study area is on the gently dipping (6/degrees/) southwestern flank of the South Belridge anticline. Wireline logs from 19 wells in a 10-ac (660 ft x 660 ft) pattern were correlated in detail. Seven post-steam conventional cores (1523 ft) aided (1) the evaluation of vertical and lateral steam-sweep efficiency, (2) evaluation of reservoir and fluid changes due to steam, (3) influence of lithofacies in reservoir quality, and (4) provided insight to the three-dimensional reservoir flow-unit geometries.

  1. Optimized Control Of Steam Heating Coils 

    E-Print Network [OSTI]

    Ali, Mir Muddassir

    2012-02-14

    Steam has been widely used as the source of heating in commercial buildings and industries throughout the twentieth century. Even though contemporary designers have moved to hot water as the primary choice for heating, a large number of facilities...

  2. Steam turbine upgrading: low-hanging fruit

    SciTech Connect (OSTI)

    Peltier, R.

    2006-04-15

    The thermodynamic performance of the steam turbine, more than any other plant component, determines overall plant efficiency. Upgrading steam path components and using computerized design tools and manufacturing techniques to minimise internal leaks are two ways to give tired steam turbines a new lease on life. The article presents three case studies that illustrate how to do that. These are at Unit 1 of Dairyland's J.P. Madgett Station in Alma, WI, a coal-fired subcritical steam plant; the four units at AmerenUE's 600 MW coal-fired Labadie plant west of St. Louis; and Unit 3 of KeyPlan Corp's Northport Power Station on Long Island. 8 figs.

  3. Consider Steam Turbine Drives for Rotating Equipment

    SciTech Connect (OSTI)

    Not Available

    2006-01-01

    This revised ITP tip sheet on steam turbine drives for rotating equipment provides how-to advice for improving the system using low-cost, proven practices and technologies.

  4. Compressor & Steam Turbine Efficiency Improvements & Revamping Opportunities 

    E-Print Network [OSTI]

    Hata, S.; Horiba, J.; Sicker, M.

    2011-01-01

    in which they operate. This energy growth requires high efficiency improvements for machine design and operation to minimize life cycle cost. This paper will focus on the mechanical drive steam turbines which power the main process equipment in the heart...

  5. Optimizing Steam & Condensate System: A Case Study 

    E-Print Network [OSTI]

    Venkatesan, V. V.; Norris, C.

    2011-01-01

    Optimization of Steam & Condensate systems in any process plant results in substantial reduction of purchased energy cost. During periods of natural gas price hikes, this would benefit the plant in controlling their fuel budget significantly...

  6. Solar steam generation by heat localization

    E-Print Network [OSTI]

    Ghasemi, Hadi

    Currently, steam generation using solar energy is based on heating bulk liquid to high temperatures. This approach requires either costly high optical concentrations leading to heat loss by the hot bulk liquid and heated ...

  7. Extraction Steam Controls at EPLA-W 

    E-Print Network [OSTI]

    Brinker, J. L.

    2004-01-01

    ExxonMobil's Baton Rouge site encompasses a world-scale refinery, chemical plant and third party power station. Historically, inflexible and unreliable control systems on two high-pressure, extracting/condensing steam turbines prevented the site...

  8. Steam System Optimization : A Case Study 

    E-Print Network [OSTI]

    Iordanova, N.; Venkatesan, V. V.; Calogero, M.

    2002-01-01

    The steam system optimization (generation, distribution, use and condensate return) offers a large opportunity for action to comply with the new levels of energy efficiency standards. Superior design and improved maintenance practices are the two...

  9. Apparatus and methods of reheating gas turbine cooling steam and high pressure steam turbine exhaust in a combined cycle power generating system

    DOE Patents [OSTI]

    Tomlinson, Leroy Omar (Niskayuna, NY); Smith, Raub Warfield (Ballston Lake, NY)

    2002-01-01

    In a combined cycle system having a multi-pressure heat recovery steam generator, a gas turbine and steam turbine, steam for cooling gas turbine components is supplied from the intermediate pressure section of the heat recovery steam generator supplemented by a portion of the steam exhausting from the HP section of the steam turbine, steam from the gas turbine cooling cycle and the exhaust from the HP section of the steam turbine are combined for flow through a reheat section of the HRSG. The reheated steam is supplied to the IP section inlet of the steam turbine. Thus, where gas turbine cooling steam temperature is lower than optimum, a net improvement in performance is achieved by flowing the cooling steam exhausting from the gas turbine and the exhaust steam from the high pressure section of the steam turbine in series through the reheater of the HRSG for applying steam at optimum temperature to the IP section of the steam turbine.

  10. Optimization of Steam Network in Tehran Oil Refinery 

    E-Print Network [OSTI]

    Khodaie, H.; Nasr, M. R. J.

    2008-01-01

    involved super heater, preheater, water drum, economizer and radiant chamber. In this case study boilers do not have any economizer so no heat exchanger between the incoming boilers feed water and the hot flue gases before they are vented to atmosphere... boiler feed water treatment, steam boilers, steam turbines, steam distribution, steam users and producer. row water needs to be treated before it can be used for steam generation it need to be first filtered to remove suspend solids then need...

  11. Turlock Irrigation District- PV Rebate

    Office of Energy Efficiency and Renewable Energy (EERE)

    Turlock Irrigation District (TID) offers an incentive program to their customers who install solar photovoltaic (PV) systems. In keeping with the terms of the California Solar Initiative, the inc...

  12. UNIVERSITY OF THE DISTRICT OF

    E-Print Network [OSTI]

    District of Columbia, University of the

    UNIVERSITY OF THE DISTRICT OF COLUMBIA 1 Removal of Eutrophic Nutrients from Wastewater-Supplemented Digester Elutriate in the Fermentor 2. The Effect of Differential- Heating of Digester Elutriate on its

  13. Missouri School District Charges Up

    Broader source: Energy.gov [DOE]

    Missouri's Lee's Summit R-7 school district's distribution fleet was tired. Many of the vehicles had racked up more than 300,000 miles and made frequent trips to the shop to repair the 20 plus-year-old parts.

  14. Boise geothermal district heating system

    SciTech Connect (OSTI)

    Hanson, P.J.

    1985-10-01

    This document describes the Boise geothermal district heating project from preliminary feasibility studies completed in 1979 to a fully operational system by 1983. The report includes information about the two local governments that participated in the project - the City of Boise, Idaho and the Boise Warm Springs Water District. It also discusses the federal funding sources; the financial studies; the feasibility studies conducted; the general system planning and design; design of detailed system components; the legal issues involved in production; geological analysis of the resource area; distribution and disposal; the program to market system services; and the methods of retrofitting buildings to use geothermal hot water for space heating. Technically this report describes the Boise City district heating system based on 170/sup 0/F water, a 4000 gpm production system, a 41,000 foot pipeline system, and system economies. Comparable data are also provided for the Boise Warm Springs Water District. 62 figs., 31 tabs.

  15. Control system for fluid heated steam generator

    DOE Patents [OSTI]

    Boland, J.F.; Koenig, J.F.

    1984-05-29

    A control system for controlling the location of the nucleate-boiling region in a fluid heated steam generator comprises means for measuring the temperature gradient (change in temperature per unit length) of the heating fluid along the steam generator; means for determining a control variable in accordance with a predetermined function of temperature gradients and for generating a control signal in response thereto; and means for adjusting the feedwater flow rate in accordance with the control signal.

  16. Oxidation of advanced steam turbine alloys

    SciTech Connect (OSTI)

    Holcomb, G.R.; Covino, B.S., Jr.; Bullard, S.J.; Ziomek-Moroz, M.

    2006-03-01

    Advanced or ultra supercritical (USC) steam power plants offer the promise of higher efficiencies and lower emissions. Current goals of the U.S. Department of Energy’s Advanced Power Systems Initiatives include coal generation at 60% efficiency, which would require steam temperatures of up to 760°C. This research examines the steamside oxidation of advanced alloys for use in USC systems, with emphasis placed on alloys for high- and intermediate-pressure turbine sections.

  17. Control system for fluid heated steam generator

    DOE Patents [OSTI]

    Boland, James F. (Bonneville County, ID); Koenig, John F. (Idaho Falls, ID)

    1985-01-01

    A control system for controlling the location of the nucleate-boiling region in a fluid heated steam generator comprises means for measuring the temperature gradient (change in temperature per unit length) of the heating fluid along the steam generator; means for determining a control variable in accordance with a predetermined function of temperature gradients and for generating a control signal in response thereto; and means for adjusting the feedwater flow rate in accordance with the control signal.

  18. Evaluation of the heating operation and transmission district: Feasibility of cogeneration. Final report

    SciTech Connect (OSTI)

    Cable, J.H.; Gilday, L.T.; Moss, M.E.

    1995-11-01

    The General Services Administration, through its National Capital Region, operates a district heating system - called the Heating Operation and Transmission District - that provides steam to approximately 100 government buildings in Washington, D.C. HOTD is examining a host of options that will improve its ability to provide reliable, environmentally sound, and cost-effective service to its customers. This report evaluates one of those options - cogeneration, a technology that would enable HOTD to produce steam and electricity simultaneously. The study concluded that, under current regulations, cogeneration is not attractive economically because the payback period (15 years) exceeds Federal return-on-investment guidelines. However, if the regulatory environment changes to allow wheeling (transmission of power by a non-utility power producer to another user), cogeneration would be attractive; HOTD would save anywhere from $38 million to $118 million and the investment would pay back in 7 to 10 years. Although incorporating cogeneration into the HOTD system has no strong benefit at this time, the report recommends that GSA reevaluate cogeneration in one or two years because Federal regulations regarding wheeling are under review. It also recommends that GSA work with the District of Columbia government to develop standards for cogeneration.

  19. The role of the district office in instructional practice reform

    E-Print Network [OSTI]

    Rizzi, Karen Schultz

    2008-01-01

    reality: Standards-based reform in urban districts. MenloW. A. (1989). Using reform: Conceptualizing districtHow districts support school reform. Seattle: University of

  20. DOE's BestPractices Steam End User Training Steam End User Training

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    , SSAT, and the 3E-Plus Insulation Tool. The Steam Generation Efficiency module focuses on boiler efficiency. In this section the definition of boiler efficiency will be discussed and the various avenues of boiler losses will be explored. Resource Utilization Effectiveness will discuss fuel selection, steam

  1. Boiler Efficiency vs. Steam Quality- The Challenge of Creating Quality Steam Using Existing Boiler Efficiencies 

    E-Print Network [OSTI]

    Hahn, G.

    1998-01-01

    A boiler works under pressure and it is not possible to see what is happening inside of it. The terms "wet steam" and "carry over" are every day idioms in the steam industry, yet very few people have ever seen these phenomena and the actual water...

  2. DOE's BestPractices Steam End User Training Steam End User Training

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    steam systems - Measure boiler efficiency - Estimate the magnitude of specific boiler losses - Identify and prioritize areas of boiler efficiency improvement - Recognize the impacts of fuel selection Measurements] Boiler o Flue gas temperature o Flue gas oxygen content o Boiler fuel flow o Boiler steam

  3. A Genetic Algorithm Approach to Focused Software Usage Testing

    E-Print Network [OSTI]

    Wu, Annie S.

    A Genetic Algorithm Approach to Focused Software Usage Testing Robert M. Patton, Annie S. Wu Orlando, FL, U.S.A. ABSTRACT Because software system testing typically consists of only a very small these issues, this paper presents a Genetic Algorithm (GA) approach to focused software usage testing. Based

  4. Industrial Electricity Usage and Stock Returns , Dayong Huang

    E-Print Network [OSTI]

    Pfrender, Michael

    on electricity consumption as a more accurate measure of economic growth in China. "All other figures, especiallyIndustrial Electricity Usage and Stock Returns Zhi Da , Dayong Huang , Hayong Yun§ April 2015 Abstract The industrial electricity usage growth rate predicts future stock returns up to one year

  5. Impact of Internet Usage in Saudi Arabia: A Social Perspective

    E-Print Network [OSTI]

    Sait, Sadiq M.

    Impact of Internet Usage in Saudi Arabia: A Social Perspective Sadiq M. Sait, KFUPM, Dhahran Arabia was introduced in the late 1990s. Being relatively new, its effects and impact on Saudi society and Society, Social Perspective, Internet Usage, Saudi Arabia INTRODUCTION Society and social systems can

  6. KOINOTITES: A Web Usage Mining Tool for Personalization

    E-Print Network [OSTI]

    Paliouras, George

    KOINOTITES: A Web Usage Mining Tool for Personalization Dimitrios Pierrakos Inst. of Informatics@iit.demokritos.gr SUMMARY This paper presents the Web Usage Mining system KOINOTITES, which uses data mining techniques for the construction of user communities on the Web. User communities model groups of visitors in a Web site, who have

  7. Subsurface steam sampling in Geysers wells

    SciTech Connect (OSTI)

    Lysne, P. [Lysne (Peter), Albuquerque, NM (United States); Koenig, B. [Unocal Geothermal and Power Operations Group, Santa Rose, CA (United States); Hirtz, P. [Thermochem, Inc., Santa Rosa, CA (United States); Normann, R.; Henfling, J. [Sandia National Labs., Albuquerque, NM (United States)

    1997-01-01

    A new downhole sampling tool has been built for use in steam wells at The Geysers geothermal reservoir. The tool condenses specimens into an initially evacuated vessel that is opened down hole at the direction of an on-board computer. The tool makes a temperature log of the well as it is deployed, and the pressure and temperature of collected specimens are monitored for diagnostic purposes. Initial tests were encouraging, and the Department of Energy has funded an expanded effort that includes data gathering needed to develop a three-dimensional model of The Geysers geochemical environment. Collected data will be useful for understanding the origins of hydrogen chloride and non-condensable gases in the steam, as well as tracking the effect of injection on the composition of produced steam. Interested parties are invited to observe the work and to join the program.

  8. Ultra supercritical turbines--steam oxidation

    SciTech Connect (OSTI)

    Holcomb, Gordon R.; Covino, Bernard S., Jr.; Bullard, Sophie J.; Cramer, Stephen D.; Ziomek-Moroz, Margaret; Alman, David E.

    2004-01-01

    Ultra supercritical (USC) power plants offer the promise of higher efficiencies and lower emissions, which are goals of the U.S. Department of Energy?s Advanced Power Systems Initiatives. Most current coal power plants in the U.S. operate at a maximum steam temperature of 538?C. However, new supercritical plants worldwide are being brought into service with steam temperatures of up to 620?C. Current Advanced Power Systems goals include coal generation at 60% efficiency, which would require steam temperatures of up to 760?C. This research examines the steamside oxidation of advanced alloys for use in USC systems, with emphasis placed on alloys for high- and intermediate-pressure turbine sections. Initial results of this research are presented.

  9. Integrated vacuum absorption steam cycle gas separation

    DOE Patents [OSTI]

    Chen, Shiaguo (Champaign, IL); Lu, Yonggi (Urbana, IL); Rostam-Abadi, Massoud (Champaign, IL)

    2011-11-22

    Methods and systems for separating a targeted gas from a gas stream emitted from a power plant. The gas stream is brought into contact with an absorption solution to preferentially absorb the targeted gas to be separated from the gas stream so that an absorbed gas is present within the absorption solution. This provides a gas-rich solution, which is introduced into a stripper. Low pressure exhaust steam from a low pressure steam turbine of the power plant is injected into the stripper with the gas-rich solution. The absorbed gas from the gas-rich solution is stripped in the stripper using the injected low pressure steam to provide a gas stream containing the targeted gas. The stripper is at or near vacuum. Water vapor in a gas stream from the stripper is condensed in a condenser operating at a pressure lower than the stripper to concentrate the targeted gas. Condensed water is separated from the concentrated targeted gas.

  10. Evaluating Water Transfers in Irrigation Districts 

    E-Print Network [OSTI]

    Ghimire, Narishwar

    2013-04-11

    The participation of irrigation districts (IDs) in surface water transfers from agriculture-to-municipal uses is studied by examining IDs’ economic and political behavior, comparing their performance with non-districts (non-IDs), and analyzing...

  11. Experimental studies of steam-propane injection to enhance recovery of an intermediate crude oil 

    E-Print Network [OSTI]

    Tinss, Judicael Christopher

    2001-01-01

    in accelerating oil production and to compare the performance of steam-propane injection versus steam injection alone on an intermediate crude oil of 21 ?API gravity. Eight experimental runs were performed: three pure steam injection runs, three steam...

  12. Development and Application of Advanced Models for Steam Hydrogasification: Process Design and Economic Evaluation

    E-Print Network [OSTI]

    Lu, Xiaoming

    2012-01-01

    and adding the superheated steam to the steam turbine cycle.into gasifier as superheated steam in order to reach a highsignificant amount of superheated steam has to be generated

  13. University of the District of Columbia District of Columbia Drinking Water Blind Taste

    E-Print Network [OSTI]

    District of Columbia, University of the

    University of the District of Columbia District of Columbia Drinking Water Blind Taste Testing University of the District of Columbia Date: May 2005 Prepared for the DC Water Resources Research Institute Funds provided by USGS through the US Department of Interior #12;1 District of Columbia Drinking Water

  14. Local Power Empowers: CHP and District Energy

    Office of Energy Efficiency and Renewable Energy (EERE)

    This webinar, held on Nov. 10, 2010, provides information on combined heat and power and district energy.

  15. Energy & Environmental Benefits from Steam & Electricity Cogeneration 

    E-Print Network [OSTI]

    Ratheal, R.

    2004-01-01

    -site powerhouses (one coal-fired and one natural gas-fired) and from gas-fired and waste heat boilers in its four hydrocarbon cracking plants. The challenge was to find a way to reduce costs and improve reliability of procuring and/or producing electricity... and steam while maintaining or reducing TEX air emissions. TEX entered into an agreement with Eastex Cogeneration to build, own and operate a 440 MW gas-fired steam and electric cogeneration facility on site. Implementation of the project was complex...

  16. Savings in Steam Systems (A Case Study) 

    E-Print Network [OSTI]

    DeBat, R.

    2001-01-01

    stream_source_info ESL-IE-01-05-37.pdf.txt stream_content_type text/plain stream_size 35654 Content-Encoding ISO-8859-1 stream_name ESL-IE-01-05-37.pdf.txt Content-Type text/plain; charset=ISO-8859-1 Savings in Steam... Systems (A Case Study) Rich DeBat Steam Systems Engineer Armstrong Service, Inc. Three Rivers, MI ABSTRACT Armstrong Service Inc. (ASI) conducted an engineered evaluation at an Ammonium Nitrate Manufacturing facility during the Fall of 1999...

  17. Cover Heated, Open Vessels - Steam Tip Sheet #19

    SciTech Connect (OSTI)

    2012-01-01

    This revised AMO steam tip sheet on covering heated, open vessels provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  18. Finding Benefits by Modeling and Optimizing Steam and Power Systems 

    E-Print Network [OSTI]

    Jones, B.; Nelson, D.

    2007-01-01

    A site-wide steam modeling and optimization program (Visual MESA) was implemented at the INEOS Chocolate Bayou site. This program optimizes steam production, compressor turbine extraction, pump operation (turbine/motor) operation, as well...

  19. The Analysis and Development of Large Industrial Steam Systems 

    E-Print Network [OSTI]

    Waterland, A. F.

    1980-01-01

    Chemicals, petroleum, pulp and paper, and many other industries depend heavily on extensive complex steam systems for thermal and mechanical energy delivery. Steam's versatility and desirable characteristics as both a heat transfer medium and a...

  20. Case Study- Steam System Improvements at Dupont Automotive Marshall Laboratory 

    E-Print Network [OSTI]

    Larkin, A.

    2002-01-01

    and implement small scale cogeneration. These recommendations included reducing the medium pressure steam distribution to low pressure, eliminating the medium pressure to low pressure reducing stations, installing a back pressure steam turbine generator...

  1. Steam Tracing...New Technologies for the 21st Century 

    E-Print Network [OSTI]

    Pitzer, R. K.; Barth, R. E.; Bonorden, C.

    1999-01-01

    For decades, steam tracing has been an accepted practice in the heating of piping, vessels, and equipment. This paper presents recent product innovations such as "burn-safe" and "energy efficient" steam tracing products. For the many applications...

  2. Use Steam Jet Ejectors or Thermocompressors to Reduce Venting...

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

    to Recover Low-Pressure Waste Steam Flash High-Pressure Condensate to Regenerate Low-Pressure Steam Consider Installing High-Pressure Boilers with Backpressure Turbine-Generators...

  3. Install and Automatic Blowdown Control System - Steam Tip Sheet #23

    SciTech Connect (OSTI)

    2012-01-01

    This revised AMO steam tip sheet on installing automatic blowdown controls provide how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  4. Reliability Improvement Programs in Steam Distribution and Power Generation Systems 

    E-Print Network [OSTI]

    Petto, S.

    1987-01-01

    can be found in power generation. steam distribution, and in all types of durable and non-durable Industrial productions. I 300 " 0 " 200 C " ? ? ~ 'DO ?~ 50 ' .. '7. '70 '75 '50 '.2 The cost to maintain steam systems. namely...

  5. CIBO's Energy Efficiency Handbook for Steam Power Systems 

    E-Print Network [OSTI]

    Bessette, R. D.

    1997-01-01

    The Council of Industrial Boiler Owners (CIBO) has developed a handbook to help boiler operators get the best performance from their industrial steam systems. This energy efficiency handbook takes a comprehensive look at the boiler and steam system...

  6. Review of Orifice Plate Steam Traps | Department of Energy

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

    Review of Orifice Plate Steam Traps Review of Orifice Plate Steam Traps This guide was prepared to serve as a foundation for making informed decisions about when orifice plate...

  7. Use Vapor Recompression to Recover Low-Pressure Waste Steam,...

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

    that it can be reused. Vapor recompression relies upon a mechanical compressor or steam jet ejector to increase the temperature of the latent heat in steam to render it usable for...

  8. Following Where the Steam Goes: Industry's Business Opportunity 

    E-Print Network [OSTI]

    Jaber, D.; Jones, T.

    1999-01-01

    Many associated benefits accrue from plant projects which comprehensively address steam systems. The DOE-Alliance to Save Energy Steam Challenge program was initiated shortly after last year's IETC on April 30, 1998 to promote awareness...

  9. The Impact of Residential Density on Vehicle Usage and Energy Consumption

    E-Print Network [OSTI]

    Golob, Thomas F; Brownstone, David

    2005-01-01

    residential transportation energy usage is vital for theDensity on Vehicle Usage and Energy Consumption ReferencesDensity on Vehicle Usage and Energy Consumption UCI-ITS-WP-

  10. The Impact of Residential Density on Vehicle Usage and Energy Consumption

    E-Print Network [OSTI]

    Golob, Thomas F; Brownstone, David

    2005-01-01

    on Vehicle Usage and Energy Consumption References Bento,Vehicle Usage and Energy Consumption UCI-ITS-WP-05-1 Thomason Vehicle Usage and Energy Consumption Thomas F. Golob

  11. Improving Steam System Performance: A Sourcebook for Industry, Second Edition

    SciTech Connect (OSTI)

    2012-02-23

    This sourcebook is designed to provide steam system users with a reference that describes the basic steam system components, outlines opportunities for energy and performance improvements, and discusses the benefits of a systems approach in identifying and implementing these improvement opportunities. The sourcebook is divided into three main sections: steam system basics, performance improvement opportunities, and where to find help.

  12. Industrial Steam Power Cycles Final End-Use Classification 

    E-Print Network [OSTI]

    Waterland, A. F.

    1983-01-01

    Final end uses of steam include two major classifications: those uses that condense the steam against heat transfer surfaces to provide heat to an item of process or service equipment; and those that require a mass flow of steam for stripping...

  13. Steam boiler control specification problem: A TLA solution

    E-Print Network [OSTI]

    Merz, Stephan

    Steam boiler control specification problem: A TLA solution Frank Le�ke and Stephan Merz Institut f of the state of the steam boiler, detect failures, and model message transmission. We give a more detailed between the physi­ cal state of the steam boiler and the model maintained by the controller and discuss

  14. An Object-Oriented Algebraic Steam-Boiler Control Specification

    E-Print Network [OSTI]

    Ã?lveczky, Peter Csaba

    An Object-Oriented Algebraic Steam-Boiler Control Specification Peter Csaba ()lveczky, Poland Abstract. In this paper an object-oriented algebraic solution of the steam-boiler specification Introduction The steam-boiler control specification problem has been proposed as a challenge for different

  15. An Object-Oriented Algebraic Steam-Boiler Control Specification

    E-Print Network [OSTI]

    Ã?lveczky, Peter Csaba

    An Object-Oriented Algebraic Steam-Boiler Control Specification.In this paper an object-oriented algebraic solution of the steam-boiler specification problem is presented computations cannot happen. 1 Introduction The steam-boiler control specification problem has been

  16. Steam boiler control speci cation problem: A TLA solution

    E-Print Network [OSTI]

    Cengarle, María Victoria

    Steam boiler control speci cation problem: A TLA solution Frank Le ke and Stephan Merz Institut fur of the state of the steam boiler, detect failures, and model message transmission. We give a more detailed between the physi- cal state of the steam boiler and the model maintained by the controller and discuss

  17. An ObjectOriented Algebraic SteamBoiler Control Specification

    E-Print Network [OSTI]

    Ã?lveczky, Peter Csaba

    An Object­Oriented Algebraic Steam­Boiler Control Specification Peter Csaba Ë? Olveczky 1# , Piotr, Poland Abstract. In this paper an object­oriented algebraic solution of the steam­boiler specification Introduction The steam­boiler control specification problem has been proposed as a challenge for di

  18. STEAM RECEIVER MODELS FOR SOLAR DISH CONCENTRATORS: TWO MODELS COMPARED

    E-Print Network [OSTI]

    that commercial steam turbines operate at. It is envisaged that plants based on large arrays of dishes wouldSTEAM RECEIVER MODELS FOR SOLAR DISH CONCENTRATORS: TWO MODELS COMPARED José Zapata, Keith response of a parabolic dish steam cavity receiver. Both approaches are based on a heat transfer model

  19. Lowest Pressure Steam Saves More BTU's Than You Think 

    E-Print Network [OSTI]

    Vallery, S. J.

    1985-01-01

    the high and low steam pressures. The discussion below shows how the savings in using low pressure steam can be above 25%! The key to the savings is not in the heat exchanger equipment or the steam trap, but is back at the powerhouse - the sensible heat...

  20. Supported metal catalysts for alcohol/sugar alcohol steam reforming

    SciTech Connect (OSTI)

    Davidson, Stephen; Zhang, He; Sun, Junming; Wang, Yong

    2014-08-21

    Despite extensive studies on hydrogen production via steam reforming of alcohols and sugar alcohols, catalysts typically suffer a variety of issues from poor hydrogen selectivity to rapid deactivation. Here, we summarize recent advances in fundamental understanding of functionality and structure of catalysts for alcohol/sugar alcohol steam reforming, and provide perspectives on further development required to design highly efficient steam reforming catalysts.

  1. Project Recap Humanitarian Engineering Biodiesel Boiler System for Steam Generator

    E-Print Network [OSTI]

    Demirel, Melik C.

    Project Recap Humanitarian Engineering ­ Biodiesel Boiler System for Steam Generator Currently 70 biodiesel boiler system to drive a steam engine generator. This system is to provide electricity the customer needs, a boiler fueled by biodiesel and outputting to a steam engine was decided upon. The system

  2. Water spray ejector system for steam injected engine

    SciTech Connect (OSTI)

    Hines, W.R.

    1991-10-08

    This paper describes a method of increasing the power output of a steam injected gas turbine engine. It comprises: a compressor, a combustor having a dome which receives fuel and steam from a dual flow nozzle, and a turbine in series combination with a gas flow path passing therethrough, and a system for injection of superheated steam into the gas flow path, the method comprising spraying water into the steam injection system where the water is evaporated by the superheated steam, mixing the evaporated water with the existing steam in the steam injection system so that the resultant steam is at a temperature of at least 28 degrees celsius (50 degrees fahrenheit) superheat and additional steam is added to the dome from the fuel nozzle to obtain a resultant increased mass flow of superheated steam mixture for injection into the gas flow path, and controlling the amount of water sprayed into the steam injection system to maximize the mass flow of superheated steam without quenching the flame.

  3. Steam Trap Testing and Evaluation: An Actual Plant Case Study 

    E-Print Network [OSTI]

    Feldman, A. L.

    1981-01-01

    With rising steam costs and a high failure rate on the Joliet Plants standard steam trap, a testing and evaluation program was begun to find a steam trap that would work at Olin-Joliet. The basis was to conduct the test on the actual process...

  4. Replace Pressure-Reducing Valves with Backpressure Turbogenerators (International Fact Sheet), Energy Tips-Steam, Steam Tip Sheet #20c

    SciTech Connect (OSTI)

    Not Available

    2010-10-01

    This English/Chinese ITP steam tip sheet on replacing pressure-reducing valves provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  5. By Steve Rochette Philadelphia District

    E-Print Network [OSTI]

    US Army Corps of Engineers

    By Steve Rochette Philadelphia District See Stream, Page 5 Dave Derrick, Research Hydraulic of the Tacony Creek in Philadelphia during a workshop July 23. (Photo by Steve Rochette) Corpsaimstorestore partnered with the Environmental Protection Agency and the Philadelphia Water Department to host a stream

  6. Use Low-Grade Waste Steam to Power Absorption Chillers - Steam Tip Sheet #14

    SciTech Connect (OSTI)

    2012-01-31

    This revised AMO tip sheet on waste steam to power absorption chillers provides how-to advice for improving the system using low-cost, proven practices and technologies.

  7. Consider Steam Turbine Drives for Rotating Equipment - Steam Tip Sheet #21

    SciTech Connect (OSTI)

    2012-01-01

    This revised AMO tip sheet on steam turbine drives for rotating equipment provides how-to advice for improving the system using low-cost, proven practices and technologies.

  8. Experimental and analytical studies of hydrocarbon yields under dry-, steam-, and steam with propane-distillation 

    E-Print Network [OSTI]

    Ramirez Garnica, Marco Antonio

    2004-09-30

    Recent experimental and simulation studies -conducted at the Department of Petroleum Engineering at Texas A&M University - confirm oil production is accelerated when propane is used as an additive during steam injection. To better understand...

  9. Improved Steam Assisted Gravity Drainage (SAGD) Performance with Solvent as Steam Additive 

    E-Print Network [OSTI]

    Li, Weiqiang

    2011-02-22

    Steam Assisted Gravity Drainage (SAGD) is used widely as a thermal recovery technique in Canada to produce a very viscous bitumen formation. The main research objectives of this simulation and experimental study are to investigate oil recovery...

  10. Steam Challenge: Developing A New DOE Program to Help Industry be Steam Smart 

    E-Print Network [OSTI]

    Jones, T.; Hart, F.

    1998-01-01

    Last year, the Alliance to Save Energy, the Department of Energy's Office of Industrial Technologies, and a cadre of private companies and associations formed an innovative "Steam Partnership" with the goal of developing a new, DOE technical...

  11. Method of removing cesium from steam

    DOE Patents [OSTI]

    Carson, Jr., Neill J. (Clarendon Hills, IL); Noland, Robert A. (Oak Park, IL); Ruther, Westly E. (Skokie, IL)

    1991-01-01

    Method for removal of radioactive cesium from a hot vapor, such as high temperature steam, including the steps of passing input hot vapor containing radioactive cesium into a bed of silicate glass particles and chemically incorporating radioactive cesium in the silicate glass particles at a temperature of at least about 700.degree. F.

  12. Task 1—Steam Oxidation (NETL-US)

    SciTech Connect (OSTI)

    G. R. Holcomb

    2010-05-01

    The proposed steam in let temperature in the Advanced Ultra Supercritical (A·USC) steam turbine is high enough (760°C) Ihat traditional turbine casing and valve body materials such as ferr;tic/manensitic steels will not suffice due to temperature lim itations of this class of materials. Cast versions of three traditionally wrought Ni-based superalloys (Haynes 263. Haynes 282, and Nimonic 105) were evaluated for use as casing or valve components for the next generation of industrial steam turbines. The full size castings are substantia l: 2-5,000 kg each half and on the order of 100 nun thick. Experimental castings were quite a bit smaller, but section size was retained and cooling rate controlled to produce equi valem microslruclUre •. A multi_step homogenization heat treatment was d~ve loped to better disperse the al loy constituents. These castings were subsequently evaluated by characterizing their microstructure as well as their steam oxidation resistance (al 760 and 800 "C).

  13. Gas turbine row #1 steam cooled vane

    DOE Patents [OSTI]

    Cunha, Frank J. (Longwood, FL)

    2000-01-01

    A design for a vane segment having a closed-loop steam cooling system is provided. The vane segment comprises an outer shroud, an inner shroud and an airfoil, each component having a target surface on the inside surface of its walls. A plurality of rectangular waffle structures are provided on the target surface to enhance heat transfer between each component and cooling steam. Channel systems are provided in the shrouds to improve the flow of steam through the shrouds. Insert legs located in cavities in the airfoil are also provided. Each insert leg comprises outer channels located on a perimeter of the leg, each outer channel having an outer wall and impingement holes on the outer wall for producing impingement jets of cooling steam to contact the airfoil's target surface. Each insert leg further comprises a plurality of substantially rectangular-shaped ribs located on the outer wall and a plurality of openings located between outer channels of the leg to minimize cross flow degradation.

  14. Steam Trap Maintenance as a Profit Center 

    E-Print Network [OSTI]

    Bouchillon, J. L.

    1996-01-01

    program at a large, 4000 trap chemical plant. The previously "good" maintenance program which was losing $565,000 per year in steam was turned into a $485,000 per year cost savings. This paper will also give the steps that can in as few as 3 months...

  15. Low chemical concentrating steam generating cycle

    DOE Patents [OSTI]

    Mangus, James D. (Greensburg, PA)

    1983-01-01

    A steam cycle for a nuclear power plant having two optional modes of operation. A once-through mode of operation uses direct feed of coolant water to an evaporator avoiding excessive chemical concentration buildup. A recirculation mode of operation uses a recirculation loop to direct a portion of flow from the evaporator back through the evaporator to effectively increase evaporator flow.

  16. Coreflood experimental study of steam displacement 

    E-Print Network [OSTI]

    Cerutti, Andres Enrique

    1997-01-01

    The main objective of this study was to verify experimentally whether or not a Buckley-Leverett shock front exists when steam displaces oil in a porous medium, as assumed in the Aydelotte-Pope steamflood predictive model. Experiments were conducted...

  17. Natural gas-assisted steam electrolyzer

    DOE Patents [OSTI]

    Pham, Ai-Quoc (San Jose, CA); Wallman, P. Henrik (Berkeley, CA); Glass, Robert S. (Livermore, CA)

    2000-01-01

    An efficient method of producing hydrogen by high temperature steam electrolysis that will lower the electricity consumption to an estimated 65 percent lower than has been achievable with previous steam electrolyzer systems. This is accomplished with a natural gas-assisted steam electrolyzer, which significantly reduces the electricity consumption. Since this natural gas-assisted steam electrolyzer replaces one unit of electrical energy by one unit of energy content in natural gas at one-quarter the cost, the hydrogen production cost will be significantly reduced. Also, it is possible to vary the ratio between the electricity and the natural gas supplied to the system in response to fluctuations in relative prices for these two energy sources. In one approach an appropriate catalyst on the anode side of the electrolyzer will promote the partial oxidation of natural gas to CO and hydrogen, called Syn-Gas, and the CO can also be shifted to CO.sub.2 to give additional hydrogen. In another approach the natural gas is used in the anode side of the electrolyzer to burn out the oxygen resulting from electrolysis, thus reducing or eliminating the potential difference across the electrolyzer membrane.

  18. Fuel cell integrated with steam reformer

    DOE Patents [OSTI]

    Beshty, Bahjat S. (Lower Makefield, PA); Whelan, James A. (Bricktown, NJ)

    1987-01-01

    A H.sub.2 -air fuel cell integrated with a steam reformer is disclosed wherein a superheated water/methanol mixture is fed to a catalytic reformer to provide a continuous supply of hydrogen to the fuel cell, the gases exhausted from the anode of the fuel cell providing the thermal energy, via combustion, for superheating the water/methanol mixture.

  19. Experimental and analytical studies of hydrocarbon yields under dry-, steam-, and steam-with-propane distillation 

    E-Print Network [OSTI]

    Jaiswal, Namit

    2007-09-17

    the synthetic sample and experimental study previously carried out. (e) To correlate steam-propane distillation yields for some crude oils and synthetic hydrocarbons to generate steam-propane distillation data that could be used to develop the input data... there is need to develop a model to predict distillate yield under any set of conditions for any heavy oil, requiring only the simulated distillation (SIMDIS) trace (i.e. percent off vs. normal boiling temperature) of the oil. The expected deliverables from...

  20. Mining data on usage of electronic nicotine delivery systems (ENDS) from YouTube videos

    E-Print Network [OSTI]

    Talbot, Prue

    2013-01-01

    by group.bmj.com Research paper Mining data on usage of2013 - Published by group.bmj.com Mining data on usage of

  1. The Impact of Residential Density on Vehicle Usage and Energy Consumption

    E-Print Network [OSTI]

    Golob, Thomas F.; Brownstone, David

    2005-01-01

    Vehicle Usage and Energy Consumption Table 2 Housing Unitsresidential vehicular energy consumption is graphed as aon Vehicle Usage and Energy Consumption with vehicles, but

  2. Potential Usage of Smartphone Inertial Sensors in Healthcare Applications

    E-Print Network [OSTI]

    Lu?trek, Mitja

    Potential Usage of Smartphone Inertial Sensors in Healthcare Applications Hristijan Gjoreski1 Institute, Ljubljana, Slovenia 2 Jozef Stefan International Postgraduate School, Ljubljana, Slovenia), step counters, energy expenditure estimation, etc. The early studies in this area were conducted

  3. Dynamic Memory Usage Optimization using ILP and J. Ramanujam2

    E-Print Network [OSTI]

    Ramanujam, J. "Ram"

    Dept., Assiut University, Egypt 2 Electrical and Computer Engineering Dept, Louisiana State UniversityDynamic Memory Usage Optimization using ILP A. Allam1 and J. Ramanujam2 1 Electrical Engineering

  4. Documentation of INL's In Situ Oil Shale Retorting Water Usage...

    Office of Scientific and Technical Information (OSTI)

    Documentation of INL's In Situ Oil Shale Retorting Water Usage System Dynamics Model Earl D Mattson; Larry Hull 02 PETROLEUM water water A system dynamic model was construction to...

  5. Fermilab | Graphic Standards at Fermilab | Logo and usage

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

    may request a co-branded logo. If you would like to learn how the DOE Office of Science logo should be used, click here. For questions or comments regarding logo usage or...

  6. Thermochemically recuperated and steam cooled gas turbine system

    DOE Patents [OSTI]

    Viscovich, P.W.; Bannister, R.L.

    1995-07-11

    A gas turbine system is described in which the expanded gas from the turbine section is used to generate the steam in a heat recovery steam generator and to heat a mixture of gaseous hydrocarbon fuel and the steam in a reformer. The reformer converts the hydrocarbon gas to hydrogen and carbon monoxide for combustion in a combustor. A portion of the steam from the heat recovery steam generator is used to cool components, such as the stationary vanes, in the turbine section, thereby superheating the steam. The superheated steam is mixed into the hydrocarbon gas upstream of the reformer, thereby eliminating the need to raise the temperature of the expanded gas discharged from the turbine section in order to achieve effective conversion of the hydrocarbon gas. 4 figs.

  7. Thermochemically recuperated and steam cooled gas turbine system

    DOE Patents [OSTI]

    Viscovich, Paul W. (Longwood, FL); Bannister, Ronald L. (Winter Springs, FL)

    1995-01-01

    A gas turbine system in which the expanded gas from the turbine section is used to generate the steam in a heat recovery steam generator and to heat a mixture of gaseous hydrocarbon fuel and the steam in a reformer. The reformer converts the hydrocarbon gas to hydrogen and carbon monoxide for combustion in a combustor. A portion of the steam from the heat recovery steam generator is used to cool components, such as the stationary vanes, in the turbine section, thereby superheating the steam. The superheated steam is mixed into the hydrocarbon gas upstream of the reformer, thereby eliminating the need to raise the temperature of the expanded gas discharged from the turbine section in order to achieve effective conversion of the hydrocarbon gas.

  8. Deliberate ignition of hydrogen-air-steam mixtures in condensing steam environments

    SciTech Connect (OSTI)

    Blanchat, T.K.; Stamps, D.W.

    1997-05-01

    Large scale experiments were performed to determine the effectiveness of thermal glow plug igniters to burn hydrogen in a condensing steam environment due to the presence of water sprays. The experiments were designed to determine if a detonation or accelerated flame could occur in a hydrogen-air-steam mixture which was initially nonflammable due to steam dilution but was rendered flammable by rapid steam condensation due to water sprays. Eleven Hydrogen Igniter Tests were conducted in the test vessel. The vessel was instrumented with pressure transducers, thermocouple rakes, gas grab sample bottles, hydrogen microsensors, and cameras. The vessel contained two prototypic engineered systems: (1) a deliberate hydrogen ignition system and (2) a water spray system. Experiments were conducted under conditions scaled to be nearly prototypic of those expected in Advanced Light Water Reactors (such as the Combustion Engineering (CE) System 80+), with prototypic spray drop diameter, spray mass flux, steam condensation rates, hydrogen injection flow rates, and using the actual proposed plant igniters. The lack of any significant pressure increase during the majority of the burn and condensation events signified that localized, benign hydrogen deflagration(s) occurred with no significant pressure load on the containment vessel. Igniter location did not appear to be a factor in the open geometry. Initially stratified tests with a stoichiometric mixture in the top showed that the water spray effectively mixes the initially stratified atmosphere prior to the deflagration event. All tests demonstrated that thermal glow plugs ignite hydrogen-air-steam mixtures under conditions with water sprays near the flammability limits previously determined for hydrogen-air-steam mixtures under quiescent conditions. This report describes these experiments, gives experimental results, and provides interpretation of the results. 12 refs., 127 figs., 16 tabs.

  9. On Water, Steam and String Theory

    E-Print Network [OSTI]

    Christof Schmidhuber

    1997-01-22

    This is a colloquium-style review lecture for physicists and non-physicists, as part of the requirements for ``Habilitation'' at the university of Bern: At a pressure of 220 atm. and a temperature of 374 Celsius there is a second-order phase transition between water and steam. Understanding it requires the concept of the renormalization group. Images from computer simulations of the lattice gas model (included) are used to explain its basic ideas. It is briefly reviewed how the renormalization group is used to compute critical coefficients for the water-steam phase transition, in good agreement with experiment. Applications in particle physics and string theory are mentioned. The appendix contains a sample of the author's results on renormalization group flows in theories with dynamical gravity and their relation to perturbative string theory: gravity modifies critical coefficients and phase diagrams, in agreement with numerical calculations, and leads to curious phenomena such as oscillating flows and quantum mechanical flows.

  10. Cash Flow Impacts of Industrial Steam Efficiency 

    E-Print Network [OSTI]

    Russell, C.

    2003-01-01

    . Corporate leaders can maintain ROI by avoiding asset additions, but eventually the downtime imposed by failing assets begins to defeat this strategy. Plant optimization achieved through applied energy efficiency can only support the manager's adherence... gets the resources to upgrade steam assets and maintenance. But in addition, product managers enjoy lower costs per unit due to reduced waste of direct materials, as well as avoided downtime. Sales and marketing staff enjoy a bit more negotiating...

  11. Propellant actuated nuclear reactor steam depressurization valve

    DOE Patents [OSTI]

    Ehrke, Alan C. (San Jose, CA); Knepp, John B. (San Jose, CA); Skoda, George I. (Santa Clara, CA)

    1992-01-01

    A nuclear fission reactor combined with a propellant actuated depressurization and/or water injection valve is disclosed. The depressurization valve releases pressure from a water cooled, steam producing nuclear reactor when required to insure the safety of the reactor. Depressurization of the reactor pressure vessel enables gravity feeding of supplementary coolant water through the water injection valve to the reactor pressure vessel to prevent damage to the fuel core.

  12. Materials Performance in USC Steam Portland

    SciTech Connect (OSTI)

    G.R. Holcomb; J. Tylczak; R. Hu

    2011-04-26

    Goals of the U.S. Department of Energy's Advanced Power Systems Initiatives include power generation from coal at 60% efficiency, which requires steam conditions of up to 760 C and 340 atm, co-called advanced ultrasupercritical (A-USC) steam conditions. A limitation to achieving the goal is a lack of cost-effective metallic materials that can perform at these temperatures and pressures. Some of the more important performance limitations are high-temperature creep strength, fire-side corrosion resistance, and steam-side oxidation resistance. Nickel-base superalloys are expected to be the materials best suited for steam boiler and turbine applications above about 675 C. Specific alloys of interest include Haynes 230 and 282, Inconel 617, 625 and 740, and Nimonic 263. Further validation of a previously developed chromia evaporation model is shown by examining the reactive evaporation effects resulting from exposure of Haynes 230 and Haynes 282 to moist air environments as a function of flow rate and water content. These two alloys differ in Ti and Mn contents, which may form outer layers of TiO{sub 2} or Cr-Mn spinels. This would in theory decrease the evaporation of Cr{sub 2}O{sub 3} from the scale by decreasing the activity of chromia at the scale surface, and be somewhat self-correcting as chromia evaporation concentrates the Ti and Mn phases. The apparent approximate chromia activity was found for each condition and alloy that showed chromia evaporation kinetics. As expected, it was found that increasing the gas flow rate led to increased chromia evaporation and decreased chromia activity. However, increasing the water content in moist air increased the evaporation, but results were mixed with its effect on chromia activity.

  13. Oxidation of alloys for advanced steam turbines

    SciTech Connect (OSTI)

    Holcomb, Gordon R.; Covino, Bernard S., Jr.; Bullard, Sophie J.; Ziomek-Moroz, M.; Alman, David E.

    2005-01-01

    Ultra supercritical (USC) power plants offer the promise of higher efficiencies and lower emissions. Current goals of the U.S. Department of Energy’s Advanced Power Systems Initiatives include coal generation at 60% efficiency, which would require steam temperatures of up to 760°C. This research examines the steamside oxidation of advanced alloys for use in USC systems, with emphasis placed on alloys for high- and intermediate-pressure turbine sections.

  14. Laser removal of sludge from steam generators

    DOE Patents [OSTI]

    Nachbar, Henry D. (Ballston Lake, NY)

    1990-01-01

    A method of removing unwanted chemical deposits known as sludge from the metal surfaces of steam generators with laser energy is provided. Laser energy of a certain power density, of a critical wavelength and frequency, is intermittently focused on the sludge deposits to vaporize them so that the surfaces are cleaned without affecting the metal surface (sludge substrate). Fiberoptic tubes are utilized for laser beam transmission and beam direction. Fiberoptics are also utilized to monitor laser operation and sludge removal.

  15. Steam System Optimization: A Case Study 

    E-Print Network [OSTI]

    Iordanova, N.; Venkatesan, V. V.

    2000-01-01

    to the atmosphere. Figure 6. Existing and proposed collection of atmospheric condensate at Plant C. Recovery of condensate and vented flash steam at the Atmospheric Flash Drums will save Plant C $144,000 annual1y. The savings estimation is based on the amount... vent condenser, and finally collected at the recycle solvent drum. A pressure relieve valve at the vent header, maintains the temperature and the pressure without Figure 7. Existing arrangements at Crystal1izers. Typical Material Balance data from...

  16. Steam System Modeler | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergyPlan | Department of Energy 1 DOE| Department ofSteam System Modeler

  17. Steam System Survey Guide | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergyPlan | Department of Energy 1 DOE| Department ofSteam System

  18. A Framework for Personal Web Usage Mining Yongjian Fu MingYi Shih

    E-Print Network [OSTI]

    Fu, Yongjian

    A Framework for Personal Web Usage Mining Yongjian Fu Ming­Yi Shih Department of Computer Science­0350 Rolla, MO 65409­0350 yongjian@umr.edu mingyi@umr.edu Abstract In this paper, we propose to mine Web usage data on client side, or personal Web usage mining, as a complement to the server side Web usage

  19. A Framework for Personal Web Usage Mining Yongjian Fu Ming-Yi Shih

    E-Print Network [OSTI]

    Fu, Yongjian

    A Framework for Personal Web Usage Mining Yongjian Fu Ming-Yi Shih Department of Computer Science-0350 Rolla, MO 65409-0350 yongjian@umr.edu mingyi@umr.edu Abstract In this paper, we propose to mine Web usage data on client side, or personal Web usage mining, as a complement to the server side Web usage

  20. Underground coal gasification using oxygen and steam

    SciTech Connect (OSTI)

    Yang, L.H.; Zhang, X.; Liu, S. [China University of Mining & Technology, Xuzhou (China)

    2009-07-01

    In this paper, through model experiment of the underground coal gasification, the effects of pure oxygen gasification, oxygen-steam gasification, and moving-point gasification methods on the underground gasification process and gas quality were studied. Experiments showed that H{sub 2} and CO volume fraction in product gas during the pure oxygen gasification was 23.63-30.24% and 35.22-46.32%, respectively, with the gas heating value exceeding 11.00 MJ/m{sup 3}; under the oxygen-steam gasification, when the steam/oxygen ratio stood at 2: 1, gas compositions remained virtually stable and CO + H{sub 2} was basically between 61.66 and 71.29%. Moving-point gasification could effectively improve the changes in the cavity in the coal seams or the effects of roof inbreak on gas quality; the ratio of gas flowing quantity to oxygen supplying quantity was between 3.1:1 and 3.5:1 and took on the linear changes; on the basis of the test data, the reasons for gas quality changes under different gasification conditions were analyzed.

  1. Measuring non-condensable gases in steam

    SciTech Connect (OSTI)

    Doornmalen, J. P. C. M. van; Kopinga, K., E-mail: k.kopinga@tue.nl [Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven (Netherlands)

    2013-11-15

    In surgery, medical devices that are used should be sterilized. To obtain surface steam sterilization conditions, not only in the sterilizer chamber itself but also in the loads to be sterilized, the amount of non-condensable gases (NCGs), for instance air, should be very low. Even rather small fractions of NCGs (below 1 %) seriously hamper steam penetration in porous materials or devices with hollow channels (e.g., endoscopes). A recently developed instrument which might detect the presence of residual NCGs in a reliable and reproducible way is the 3M{sup TM} Electronic Test System (ETS). In this paper, a physical model is presented that describes the behavior of this instrument. This model has been validated by experiments in which known fractions of NCGs were introduced in a sterilizer chamber in which an ETS was placed. Despite several approximations made in the model, a good agreement is found between the model predictions and the experimental results. The basic principle of the ETS, measuring the heat transfer by condensation on a cooled surface, permits a very sensitive detection of NCGs in harsh environments like water vapor at high temperatures and pressures. Our model may serve to develop adapted and optimized versions of this instrument for use outside the field of sterilization, e.g., in heat exchangers based on steam condensation.

  2. 2011 Radioactive Materials Usage Survey for Unmonitored Point Sources

    SciTech Connect (OSTI)

    Sturgeon, Richard W.

    2012-06-27

    This report provides the results of the 2011 Radioactive Materials Usage Survey for Unmonitored Point Sources (RMUS), which was updated by the Environmental Protection (ENV) Division's Environmental Stewardship (ES) at Los Alamos National Laboratory (LANL). ES classifies LANL emission sources into one of four Tiers, based on the potential effective dose equivalent (PEDE) calculated for each point source. Detailed descriptions of these tiers are provided in Section 3. The usage survey is conducted annually; in odd-numbered years the survey addresses all monitored and unmonitored point sources and in even-numbered years it addresses all Tier III and various selected other sources. This graded approach was designed to ensure that the appropriate emphasis is placed on point sources that have higher potential emissions to the environment. For calendar year (CY) 2011, ES has divided the usage survey into two distinct reports, one covering the monitored point sources (to be completed later this year) and this report covering all unmonitored point sources. This usage survey includes the following release points: (1) all unmonitored sources identified in the 2010 usage survey, (2) any new release points identified through the new project review (NPR) process, and (3) other release points as designated by the Rad-NESHAP Team Leader. Data for all unmonitored point sources at LANL is stored in the survey files at ES. LANL uses this survey data to help demonstrate compliance with Clean Air Act radioactive air emissions regulations (40 CFR 61, Subpart H). The remainder of this introduction provides a brief description of the information contained in each section. Section 2 of this report describes the methods that were employed for gathering usage survey data and for calculating usage, emissions, and dose for these point sources. It also references the appropriate ES procedures for further information. Section 3 describes the RMUS and explains how the survey results are organized. The RMUS Interview Form with the attached RMUS Process Form(s) provides the radioactive materials survey data by technical area (TA) and building number. The survey data for each release point includes information such as: exhaust stack identification number, room number, radioactive material source type (i.e., potential source or future potential source of air emissions), radionuclide, usage (in curies) and usage basis, physical state (gas, liquid, particulate, solid, or custom), release fraction (from Appendix D to 40 CFR 61, Subpart H), and process descriptions. In addition, the interview form also calculates emissions (in curies), lists mrem/Ci factors, calculates PEDEs, and states the location of the critical receptor for that release point. [The critical receptor is the maximum exposed off-site member of the public, specific to each individual facility.] Each of these data fields is described in this section. The Tier classification of release points, which was first introduced with the 1999 usage survey, is also described in detail in this section. Section 4 includes a brief discussion of the dose estimate methodology, and includes a discussion of several release points of particular interest in the CY 2011 usage survey report. It also includes a table of the calculated PEDEs for each release point at its critical receptor. Section 5 describes ES's approach to Quality Assurance (QA) for the usage survey. Satisfactory completion of the survey requires that team members responsible for Rad-NESHAP (National Emissions Standard for Hazardous Air Pollutants) compliance accurately collect and process several types of information, including radioactive materials usage data, process information, and supporting information. They must also perform and document the QA reviews outlined in Section 5.2.6 (Process Verification and Peer Review) of ES-RN, 'Quality Assurance Project Plan for the Rad-NESHAP Compliance Project' to verify that all information is complete and correct.

  3. MESUR: USAGE-BASED METRICS OF SCHOLARLY IMPACT

    SciTech Connect (OSTI)

    BOLLEN, JOHAN [Los Alamos National Laboratory; RODRIGUEZ, MARKO A. [Los Alamos National Laboratory; VAN DE SOMPEL, HERBERT [Los Alamos National Laboratory

    2007-01-30

    The evaluation of scholarly communication items is now largely a matter of expert opinion or metrics derived from citation data. Both approaches can fail to take into account the myriad of factors that shape scholarly impact. Usage data has emerged as a promising complement to existing methods o fassessment but the formal groundwork to reliably and validly apply usage-based metrics of schlolarly impact is lacking. The Andrew W. Mellon Foundation funded MESUR project constitutes a systematic effort to define, validate and cross-validate a range of usage-based metrics of schlolarly impact by creating a semantic model of the scholarly communication process. The constructed model will serve as the basis of a creating a large-scale semantic network that seamlessly relates citation, bibliographic and usage data from a variety of sources. A subsequent program that uses the established semantic network as a reference data set will determine the characteristics and semantics of a variety of usage-based metrics of schlolarly impact. This paper outlines the architecture and methodology adopted by the MESUR project and its future direction.

  4. School District Harnesses Wind to Teach Students

    Broader source: Energy.gov [DOE]

    In addition to saving the school district money, a new wind turbine will give students hand-on experience and teach them about the benefits of renewable energy.

  5. The Metropolitan Water District of Southern California

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

    ERcomments@hq.doe.gov Comments on the Department of Energy's Quadrennial Energy Review: Water-Energy Nexus The Metropolitan Water District of Southern California (Metropolitan) is...

  6. Douglas County School District Success Story

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

    district in the state, had mounting maintenance needs and failing infrastructure with aging buildings. This was compounded by a budget already stretched to the limit, declining...

  7. Vietnam, March 2010 1 The districting problem:The districting problem

    E-Print Network [OSTI]

    Ferland, Jacques A.

    Vietnam, March 2010 1 The districting problem:The districting problem: applicationsTrois--RiviRivièèresres #12;Vietnam, March 2010 2 IntroductionIntroduction The districting problem consists in partitioning a considering different criteria or constraints.criteria or constraints. #12;Vietnam, March 2010 3 Main criteria

  8. Application of Electronic Serial Usage Statistics in a National Laboratory

    SciTech Connect (OSTI)

    Noonan, Christine F.; McBurney, Melissa K.

    2007-08-27

    Traditional measures of library performance – walk-in visitors, number of users attending presentations, classes, number of individual subscriptions processed, etc. – do not reflect the increased activity and use of library products and services. The Hanford Technical Library is physically removed from the main campus of Pacific Northwest National Laboratory, and thus necessitates having a robust online presence in order to effectively reach and provide services to library users. Online usage statistics have become vital in convincing Laboratory management to invest funding the library at continuing or increasing levels of demand for library services. E-serial usage statistics in particular give the Hanford Technical Library a myriad of information on user behavior, research trends, collection development, and act as important analytical tools which support resource allocation analysis, reporting, and managerial decision-making. However, there are many problems with publisher and vendor supplied usage statistics and possible solutions are proposed.

  9. Commercial Building Tenant Energy Usage Aggregation and Privacy

    SciTech Connect (OSTI)

    Livingston, Olga V.; Pulsipher, Trenton C.; Anderson, David M.; Wang, Na

    2014-10-31

    A growing number of building owners are benchmarking their building energy use. This requires the building owner to acquire monthly whole-building energy usage information, which can be challenging for buildings in which individual tenants have their own utility meters and accounts with the utility. Some utilities and utility regulators have turned to aggregation of customer energy use data (CEUD) as a way to give building owners whole-building energy usage data while protecting customer privacy. Meter profile aggregation adds a layer of protection that decreases the risk of revealing CEUD as the number of meters aggregated increases. The report statistically characterizes the similarity between individual energy usage patterns and whole-building totals at various levels of meter aggregation.

  10. On the evolution of word usage of classical Chinese poetry

    E-Print Network [OSTI]

    Liu, Liang

    2015-01-01

    The hierarchy of classical Chinese poetry has been broadly acknowledged by a number of studies in Chinese literature. However, quantitative investigations about the evolution of classical Chinese poetry are limited. The primary goal of this study is to provide quantitative evidence of the evolutionary linkages, with emphasis on word usage, among different period genres for classical Chinese poetry. Specifically, various statistical analyses were performed to find and compare the patterns of word usage in the poems of nine period genres, including shi jing, chu ci, Han shi , Jin shi, Tang shi, Song shi, Yuan shi, Ming shi, and Qing shi. The result of analysis indicates that each of nine period genres has unique patterns of word usage, with some Chinese characters being preferably used by the poems of a particular period genre. The analysis on the general pattern of word preference implies a decreasing trend in the use of ancient Chinese characters along the timeline of dynastic types of classical Chinese poetr...

  11. Mining Software Usage with the Automatic Library Tracking Database (ALTD)

    SciTech Connect (OSTI)

    Hadri, Bilel [ORNL; Fahey, Mark R [ORNL

    2013-01-01

    Tracking software usage is important for HPC centers, computer vendors, code developers and funding agencies to provide more efficient and targeted software support, and to forecast needs and guide HPC software effort towards the Exascale era. However, accurately tracking software usage on HPC systems has been a challenging task. In this paper, we present a tool called Automatic Library Tracking Database (ALTD) that has been developed and put in production on several Cray systems. The ALTD infrastructure prototype automatically and transparently stores information about libraries linked into an application at compilation time and also the executables launched in a batch job. We will illustrate the usage of libraries, compilers and third party software applications on a system managed by the National Institute for Computational Sciences.

  12. Steam-Electric Power-Plant-Cooling Handbook

    SciTech Connect (OSTI)

    Sonnichsen, J.C.; Carlson, H.A.; Charles, P.D.; Jacobson, L.D.; Tadlock, L.A.

    1982-02-01

    The Steam-Electric Power Plant Cooling Handbook provides summary data on steam-electric power plant capacity, generation and number of plants for each cooling means, by Electric Regions, Water Resource Regions and National Electric Reliability Council Areas. Water consumption by once-through cooling, cooling ponds and wet evaporative towers is discussed and a methodology for computation of water consumption is provided for a typical steam-electric plant which uses a wet evaporative tower or cooling pond for cooling.

  13. Return Condensate to the Boiler - Steam Tip Sheet #8

    SciTech Connect (OSTI)

    2012-01-31

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

  14. Consider Installing a Condensing Economizer - Steam Tip Sheet #26A

    SciTech Connect (OSTI)

    2012-01-01

    This revised AMO tip sheet is part of a series of tip sheets on how to optimize an industrial steam system.

  15. Improving Steam System Performance: A Sourcebook for Industry

    SciTech Connect (OSTI)

    2004-10-01

    A sourcebook designed to provide steam system users with a reference outlining opportunities to improve system performance and optimize energy efficiency in industrial energy systems.

  16. Steam System Opportunity Assessment for the Pulp and Paper, Chemical...

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

    Opportunity Assessment for the Pulp and Paper, Chemical Manufacturing, and Petroleum Refining Industries Steam System Opportunity Assessment for the Pulp and Paper, Chemical...

  17. Full Steam Ahead for PV in US Homes?

    E-Print Network [OSTI]

    Bolinger, Mark A

    2009-01-01

    Full Steam Ahead for PV in US Homes? Mark Bolinger, Galenutility-scale photovoltaic (PV) installations in the yearsimplications for PV rebate program administrators, PV system

  18. Use Steam Jet Ejectors or Thermocompressors to Reduce Venting...

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

    drying and heating, multi-effect evaporators, vulcanizers, reboilers, strippers, condensate receiver tanks, and solvent extraction processes. Producing a Vacuum with Steam Jet...

  19. Consider Steam Turbine Drives for Rotating Equipment, Energy...

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

    for Rotating Equipment Steam turbines are well suited as prime movers for driving boiler feedwater pumps, forced or induced-draft fans, blowers, air compressors, and other...

  20. An Overview of Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Delta Lake Irrigation District 

    E-Print Network [OSTI]

    Wolfe, Clint D.; Stubbs, Megan J.; Pennington, Ellen L.; Rister, M. Edward; Sturdivant, Allen W.; Lacewell, Ronald D.; Rogers, Callie S.

    2007-01-01

    to the topography, water-delivery infrastructure system, past financial decisions, and population demographics and clientele base of each irrigation district. Delta Lake Irrigation District (DLID) is one of the 29 irrigation districts in the Valley. This study...

  1. Okaloosa Gas District Smart Grid RFI: Addressing Policy and Logistical...

    Office of Environmental Management (EM)

    Okaloosa Gas District Smart Grid RFI: Addressing Policy and Logistical Challenges to Smart Grid Implementation Okaloosa Gas District Smart Grid RFI: Addressing Policy and...

  2. State-Ocean City Beach Erosion Control District (Maryland)

    Broader source: Energy.gov [DOE]

    A Beach Erosion Control District constitutes part of the Ocean City shoreline. Land clearing, construction activity, or the construction or placement of permanent structures within the district is...

  3. New Mexico State University District Heating Low Temperature...

    Open Energy Info (EERE)

    New Mexico State University District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name New Mexico State University District Heating Low Temperature...

  4. Workplace Charging Challenge Partner: Township High School District...

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

    High School District 214's sustainability program by reducing its employees' carbon footprint in the community. The District currently has 8 charging stations with plans for an...

  5. School District Success Story-A Performance Contracting Program...

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

    School District Success Story-A Performance Contracting Program School District Success Story-A Performance Contracting Program Provides an overview case study of Douglas County,...

  6. Boulder Valley School District (Colorado) Power Purchase Agreement...

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

    Boulder Valley School District (Colorado) Power Purchase Agreement Case Study Boulder Valley School District (Colorado) Power Purchase Agreement Case Study Boulder Valley School...

  7. Making the Grade: Washington School District Invest in Energy...

    Office of Environmental Management (EM)

    Making the Grade: Washington School District Invest in Energy Efficiency Making the Grade: Washington School District Invest in Energy Efficiency September 10, 2015 - 11:55am...

  8. Oregon Institute of Technology District Heating Low Temperature...

    Open Energy Info (EERE)

    Oregon Institute of Technology District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Oregon Institute of Technology District Heating Low Temperature...

  9. Fort Boise Veteran's Hospital District Heating Low Temperature...

    Open Energy Info (EERE)

    Fort Boise Veteran's Hospital District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Fort Boise Veteran's Hospital District Heating Low Temperature...

  10. LBNL: Architecture 2030 District Toolkit - 2015 Peer Review ...

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

    Architecture 2030 District Toolkit - 2015 Peer Review LBNL: Architecture 2030 District Toolkit - 2015 Peer Review Presenter: Cindy Regnier, LBNL View the Presentation LBNL:...

  11. Architecture 2030 District Toolkit - 2014 BTO Peer Review | Department...

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

    Architecture 2030 District Toolkit - 2014 BTO Peer Review Architecture 2030 District Toolkit - 2014 BTO Peer Review Presenter: Cindy Regnier, Lawrence Berkeley National Laboratory...

  12. Cedarville School District Retrofit of Heating and Cooling Systems...

    Energy Savers [EERE]

    Cedarville School District Retrofit of Heating and Cooling Systems with Geothermal Heat Pumpsand Ground Source Water Loops Cedarville School District Retrofit of Heating and...

  13. BLUE RIVER BASIN (Dodson Industrial District)

    E-Print Network [OSTI]

    US Army Corps of Engineers

    BLUE RIVER BASIN (Dodson Industrial District) Kansas City, Missouri MODIFICATION REQUEST capability to support this request. PROJECT PURPOSE Dodson Industrial District is located along the Blue of a 6,800 foot long levee- floodwall along the north bank of the Blue River from the Bannister Road

  14. ABSORPTION HEAT PUMP IN THE DISTRICT HEATING

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    #12;ABSORPTION HEAT PUMP IN THE DISTRICT HEATING PLANT Dr.sc.ing. Agnese Lickrastina M.Sc. Normunds European Heat Pump Summit 2013, Nuremberg, 15-16.10.2013 · Riga District Heating company · Operation of the DH plant Imanta · Selection of the heat pump/chiller · Operation of the heat pump/chiller · Summary

  15. DISTRICT OF HOPE SEWAGE TREATMENT STUDY

    E-Print Network [OSTI]

    #12;DISTRICT OF HOPE SEWAGE TREATMENT STUDY DOE FIL4P 1994-12 Preparedfor: Districtof Hope.0 7.0 8.0 . DISTRICT OF HOPE SEWAGE TREATMENT STUDY CONTENTS INTRODUCTION ASSESS LOADING AND IMPACT CONTROLLING SEPTAGE DISCHARGES EX(STING SLUDGE LEVELS IN LAGOONS Figure 3 Sounding Locations Figure 4 West

  16. DOE's BestPractices Steam End-User Training Steam End User Training

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    loss is almost always the largest boiler loss. [Slide Visual ­ Stack Loss Title Page] Steam factor in managing boiler performance. We will discuss both of these aspects of stack loss--we will start in the boiler exhaust gas. The temperature of the exhaust gas is an indicator of the amount of energy lost from

  17. Apparatus and methods for supplying auxiliary steam in a combined cycle system

    DOE Patents [OSTI]

    Gorman, William G. (Ballston Spa, NY); Carberg, William George (Ballston Spa, NY); Jones, Charles Michael (Ballston Lake, NY)

    2002-01-01

    To provide auxiliary steam, a low pressure valve is opened in a combined cycle system to divert low pressure steam from the heat recovery steam generator to a header for supplying steam to a second combined cycle's steam turbine seals, sparging devices and cooling steam for the steam turbine if the steam turbine and gas turbine lie on a common shaft with the generator. Cooling steam is supplied the gas turbine in the combined cycle system from the high pressure steam turbine. Spent gas turbine cooling steam may augment the low pressure steam supplied to the header by opening a high pressure valve whereby high and low pressure steam flows are combined. An attemperator is used to reduce the temperature of the combined steam in response to auxiliary steam flows above a predetermined flow and a steam header temperature above a predetermined temperature. The auxiliary steam may be used to start additional combined cycle units or to provide a host unit with steam turbine cooling and sealing steam during full-speed no-load operation after a load rejection.

  18. The value of steam turbine upgrades

    SciTech Connect (OSTI)

    Potter, K.; Olear, D.

    2005-11-01

    Technological advances in mechanical and aerodynamic design of the turbine steam path are resulting in higher reliability and efficiency. A recent study conducted on a 390 MW pulverized coal-fired unit revealed just how much these new technological advancements can improve efficiency and output. The empirical study showed that the turbine upgrade raised high pressure (HP) turbine efficiency by 5%, intermediate pressure (IP) turbine efficiency by 4%, and low pressure (LP) turbine efficiency by 2.5%. In addition, the unit's highest achievable gross generation increased from 360 MW to 371 MW. 3 figs.

  19. Greenville Steam Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County,Solar Jump to: navigation,Capital AdvisorsSteam Biomass

  20. Development and Application of Advanced Models for Steam Hydrogasification: Process Design and Economic Evaluation

    E-Print Network [OSTI]

    Lu, Xiaoming

    2012-01-01

    Iron FT Synthesis, Steam-Power Cycle All Values in 2010 $CO 2 capture, Steam-Power Cycle All Values in 2010 $ MinimumCO 2 Capture Steam-Power Cycle All Values in 2010 $ Minimum

  1. EVALUATION OF A SULFUR OXIDE CHEMICAL HEAT STORAGE PROCESS FOR A STEAM SOLAR ELECTRIC PLANT

    E-Print Network [OSTI]

    Dayan, J.

    2011-01-01

    stream conditions in steam power cycle. Table 4.1 Reactantreactor system. Steam power cycle 8.1 Efficiencies vs.793-944 Fig. 3.5. Steam power cycle. Table 3.3. Flows and

  2. EVALUATION OF A SULFUR OXIDE CHEMICAL HEAT STORAGE PROCESS FOR A STEAM SOLAR ELECTRIC PLANT

    E-Print Network [OSTI]

    Dayan, J.

    2011-01-01

    IOUT *MEBP *STC(QAAN. R )-STEAM TURBINE CALC. ~ETFQMIN~5 ST~KJ/S) 1JC. /(GROSS STEAM TURBINE POWER PRODUCTION) STEA~ GENprogram then prints the steam turbine results. All flows in

  3. A Case Study of Steam System Evaluation in a Petroleum Refinery 

    E-Print Network [OSTI]

    Venkatesan, V. V.; Iordanova, N.

    2003-01-01

    in the areas of: Steam generation, Steam distribution, Steam Utilization, Condensate recovery, and Combustion optimization in kilns. By implementing all the above 31 ECMs, the refinery is estimated to save $3.5 million annually. Based on our preliminary...

  4. Experimental study of Morichal heavy oil recovery using combined steam and propane injection 

    E-Print Network [OSTI]

    Goite Marcano, Jose Gregorio

    1999-01-01

    with steam (for the purpose of increasing steam recovery efficiency) are being evaluated. An experimental study has been performed to investigate the effect of combined steam and propane injection on recovery of heavy oil from the Morichal field, Venezuela...

  5. Flash High-Pressure Condensate to Regenerate Low-Pressure Steam...

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

    2 Flash High-Pressure Condensate to Regenerate Low-Pressure Steam Low-pressure process steam requirements are usually met by throttling high- pressure steam, but a portion of the...

  6. Discerning Electrical and Water Usage by Individuals in Homes

    E-Print Network [OSTI]

    Weimer, Westley

    auditing and feedback is an effective and low cost technique that has the potential to save 20-50% energy individual energy saving actions. In this paper, we explore the hypothesis that fixture assignment can be per% of the total US energy budget, and 70% of all electric- ity usage [3]. Engaging home residents in energy

  7. Energy Usage Attitudes of Urban India IBM Research India

    E-Print Network [OSTI]

    Toronto, University of

    Energy Usage Attitudes of Urban India Mohit Jain IBM Research India mohitjain@in.ibm.com Deepika@cs.cmu.edu Amarjeet Singh IIIT Delhi, India amarjeet@iiitd.ac.in Abstract-- Though rapid increase in energy factors affecting energy consumption in urban India. However, the small numbers of participants in those

  8. Fuel bundle design for enhanced usage of plutonium fuel

    DOE Patents [OSTI]

    Reese, Anthony P. (San Jose, CA); Stachowski, Russell E. (Fremont, CA)

    1995-01-01

    A nuclear fuel bundle includes a square array of fuel rods each having a concentration of enriched uranium and plutonium. Each rod of an interior array of the rods also has a concentration of gadolinium. The interior array of rods is surrounded by an exterior array of rods void of gadolinium. By this design, usage of plutonium in the nuclear reactor is enhanced.

  9. Evolution and Usage of the Portal Data Archive

    E-Print Network [OSTI]

    Bertini, Robert L.

    + Evolution and Usage of the Portal Data Archive: A Ten-Year Retrospective Kristin Tufte,Robert L Page today... Portal's Own Map! Vancouver,WA New Sensors & New Data Feed #12;+ Home Page ­ Evolution - Two Quantities -Updated technology -Data download #12;+ Timeseries Plot ­ Evolution ! Updated

  10. Accountable Anonymous Service Usage in Mobile Communication Systems \\Lambda

    E-Print Network [OSTI]

    Levente, Buttyán

    Accountable Anonymous Service Usage in Mobile Communication Systems \\Lambda Levente Butty communication systems. This model is based on the introduction of a new business role, called the customer care Introduction 1.1 Background Mobile communication systems allow their users to access a large set of traditional

  11. Improving Home Automation by Discovering Regularly Occurring Device Usage Patterns

    E-Print Network [OSTI]

    Holder, Lawrence B.

    Improving Home Automation by Discovering Regularly Occurring Device Usage Patterns Edwin O in an environment can be mined to discover significant patterns, which an intelligent agent could use to automate of two prediction algorithms, thus demonstrating multiple uses for a home automation system. Finally, we

  12. Access to and Usage of Offshore Liberty Ship

    E-Print Network [OSTI]

    Access to and Usage of Offshore Liberty Ship Reefs in Texas ROBERT B. DITTON, ALAN R. GRAEFE to establish cover and habitat for fisheries. Offshore artificial reef con- struction began in 1935 led many other states to become interested in deploying offshore artificial reefs. The first reef

  13. Statler College Research Data Center Access and Usage Policy

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    Statler College Research Data Center Access and Usage Policy Objective Access to the Statler College Research Data Center (RDC) will be restricted to protect Statler computer and server operations they are in the data center. The RDC is monitored by cameras at all times and all activities in the data center shall

  14. Personalizing Web Directories with the Aid of Web Usage Data

    E-Print Network [OSTI]

    Paliouras, George

    Personalizing Web Directories with the Aid of Web Usage Data Dimitrios Pierrakos, Member, IEEE of Community Web Directories, a concept that we introduced in our recent work, applying personalization to Web directories. In this context, the Web directory is viewed as a thematic hierarchy and personalization

  15. A Web Usage Mining Framework for Web Directories Personalization

    E-Print Network [OSTI]

    Kouroupetroglou, Georgios

    A Web Usage Mining Framework for Web Directories Personalization Dimitrios Pierrakos Department framework that combines Web personalization and Web directories, which results in the concept of Community Web Directories. Community Web directories is a novel form of personalization performed on Web

  16. Security Implications of Typical Grid Computing Usage Scenarios Marty Humphrey

    E-Print Network [OSTI]

    Thompson, Mary R.

    Security Implications of Typical Grid Computing Usage Scenarios Marty Humphrey Computer Science. A broader goal of these scenarios are to increase the awareness of security issues in Grid Computing. 1 easy and secure ac- cess to the Grid's diverse resources. Infrastructure software such as Legion [6

  17. Portfolio: A Search Engine for Finding Functions and Their Usages

    E-Print Network [OSTI]

    Poshyvanyk, Denys

    Libraries]: Reusable Libraries General Terms Algorithms, Experimentation Keywords source code search engines file. He or she may enter the query "edit save pdf file" into a search engine. Existing source codePortfolio: A Search Engine for Finding Functions and Their Usages Collin McMillan College

  18. Financial Policy Manual 2360 TRAVEL AND ENTERTAINMENT POLICY TELEPHONE USAGE

    E-Print Network [OSTI]

    George, Edward I.

    Financial Policy Manual Page 1 2360 ­ TRAVEL AND ENTERTAINMENT POLICY ­ TELEPHONE USAGE Resp expenses incurred when traveling on behalf of the University. SCOPE This policy applies responsibilities of the employee, student or postdoc can be found in Policy #2352. RESPONSIBILITY OF APPROVERS

  19. Greening campus WLANs: energy-relevant usage and mobility patterns

    E-Print Network [OSTI]

    Wolisz, Adam

    Greening campus WLANs: energy-relevant usage and mobility patterns Fatemeh Ganjia, , LukaszTelecommunication Networks Group, Technical University of Berlin, Einsteinufer 25, FT 5, 10587 Berlin, Germany b the peak period of activity. At the same time, it translates into a serious energy wastage during low

  20. Usage Policies Notebook for Mark 50 Evaporation Revision date

    E-Print Network [OSTI]

    Mease, Kenneth D.

    Usage Policies Notebook for Mark 50 Evaporation Revision date March 2015 #12;Emergency Plan for CHA source N2 (nitrogen) gas Asphyxiant Alarms or indications of danger Alarm type Condition and response Shutdown the machine at once. Contact the staff and the lab manager. Emergency shutdown plan #1

  1. Personality and Patterns of Facebook Usage Yoram Bachrach

    E-Print Network [OSTI]

    Kohli, Pushmeet

    Personality and Patterns of Facebook Usage Yoram Bachrach Microsoft Research yobach.ac.uk ABSTRACT We show how users' activity on Facebook relates to their per- sonality, as measured by the standard Five Factor Model. Our dataset consists of the personality profiles and Facebook pro- file data

  2. Using HYTECH to Synthesize Control Parameters for a Steam Boiler? ??

    E-Print Network [OSTI]

    Henzinger, Thomas A.

    Using HYTECH to Synthesize Control Parameters for a Steam Boiler? ?? Thomas A. Henzinger1 Howard model a steam-boiler control system using hybrid au- tomata. We provide two abstracted linear models of the nonlinear be- havior of the boiler. For each model, we de ne and verify a controller that maintains the safe

  3. Using HYTECH to Synthesize Control Parameters for a Steam Boiler ?;??

    E-Print Network [OSTI]

    Henzinger, Thomas A.

    Using HYTECH to Synthesize Control Parameters for a Steam Boiler ?;?? Thomas A. Henzinger 1 Howard model a steam­boiler control system using hybrid au­ tomata. We provide two abstracted linear models of the nonlinear be­ havior of the boiler. For each model, we define and verify a controller that maintains

  4. ENERGY SERIES "CFD Modeling and its Application in Steam Condenser

    E-Print Network [OSTI]

    Bergman, Keren

    SEMINAR: ENERGY SERIES "CFD Modeling and its Application in Steam Condenser Performance Improvement will discuss the application of CFD to steam condensers, an area where both of the above mentioned limitations of computational fluid dynamics, having applied these techniques extensively in the design large heat exchangers

  5. Steam distribution and energy delivery optimization using wireless sensors

    SciTech Connect (OSTI)

    Olama, Mohammed M [ORNL; Allgood, Glenn O [ORNL; Kuruganti, Phani Teja [ORNL; Sukumar, Sreenivas R [ORNL; Djouadi, Seddik M [ORNL; Lake, Joe E [ORNL

    2011-01-01

    The Extreme Measurement Communications Center at Oak Ridge National Laboratory (ORNL) explores the deployment of a wireless sensor system with a real-time measurement-based energy efficiency optimization framework in the ORNL campus. With particular focus on the 12-mile long steam distribution network in our campus, we propose an integrated system-level approach to optimize the energy delivery within the steam distribution system. We address the goal of achieving significant energy-saving in steam lines by monitoring and acting on leaking steam valves/traps. Our approach leverages an integrated wireless sensor and real-time monitoring capabilities. We make assessments on the real-time status of the distribution system by mounting acoustic sensors on the steam pipes/traps/valves and observe the state measurements of these sensors. Our assessments are based on analysis of the wireless sensor measurements. We describe Fourier-spectrum based algorithms that interpret acoustic vibration sensor data to characterize flows and classify the steam system status. We are able to present the sensor readings, steam flow, steam trap status and the assessed alerts as an interactive overlay within a web-based Google Earth geographic platform that enables decision makers to take remedial action. We believe our demonstration serves as an instantiation of a platform that extends implementation to include newer modalities to manage water flow, sewage and energy consumption.

  6. Plant View On Reducing Steam Trap Energy Loss 

    E-Print Network [OSTI]

    Vallery, S. J.

    1982-01-01

    's total energy consumption is used by industry in producing the goods which are consumed around the world. Steam is the most commonly used energy source for the petrochemical industry. Most of this steam is used for heating and evaporating the many...

  7. Use Low-Grade Waste Steam to Power Absorption Chillers | Department...

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

    for CHP Applications, April 2005 Improving Steam System Performance: A Sourcebook for Industry, Second Edition Flash High-Pressure Condensate to Regenerate Low-Pressure Steam...

  8. Tools to Boost Steam System Efficiency, Software Tools for Industry, Industrial Technologies Program (ITP) (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2008-12-01

    This fact sheet describes how the Industrial Technologies Program steam software tools can help industrial plants identify steam system improvements to save energy and money.

  9. Feasibility of Steam Hydrogasification of Microalgae for Production of Synthetic Fuels

    E-Print Network [OSTI]

    Suemanotham, Amornrat

    2014-01-01

    Figure 2.2. Biomass Air Steam Oxygen Hydrogen Gasifier typeAir GasifierSteam Gasifier Oxygen Gasifier Hydrogen Gasifier

  10. Investigation of Bio-Ethanol Steam Reforming over Cobalt-based...

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

    Bio-Ethanol Steam Reforming over Cobalt-based Catalysts (Presentation) Investigation of Bio-Ethanol Steam Reforming over Cobalt-based Catalysts (Presentation) Presented at the 2007...

  11. Water injection as a means for reducing non-condensible and corrosive gases in steam produced from vapor-dominated reservoirs

    E-Print Network [OSTI]

    Pruess, Karsten; Spycher, Nicolas; Kneafsey, Timothy J.

    2008-01-01

    Hydrogen Chloride in Superheated Steam and Chloride in Deepof Chloride in Superheated Geothermal Steam, Geothermics,

  12. Issues in the selection of the LMFBR steam cycle

    SciTech Connect (OSTI)

    Buschman, H.W.; McConnell, R.J.

    1983-01-01

    Unlike the light-water reactor, the liquid-metal fast breeder reactor (LMFBR) allows the designer considerable latitude in the selection of the steam cycle. This latitude in selection has been exercised by both foreign and domestic designers, and thus, despite the fact that over 25 LMFBR's have been built or are under construction, a consensus steam cycle has not yet evolved. This paper discusses the LMFBR steam cycles of interest to the LMFBR designer, reviews which of these cycles have been employed to date, discusses steam-cycle selection factors, discusses why a consensus has not evolved, and finally, concludes that the LMFBR steam-cycle selection is primarily one of technical philosophy with several options available.

  13. DEPARTMENT OF THE ARMY NEW YORK DISTRICT, CORPS OF ENGINEERS

    E-Print Network [OSTI]

    US Army Corps of Engineers

    DEPARTMENT OF THE ARMY NEW YORK DISTRICT, CORPS OF ENGINEERS JACOB K. JAVITS FEDERAL BUILDING NEW The U.S. Army Corps of Engineers, New York District (District) announces the availability of the Draft will be posted on the U.S. Army Corps of Engineers, New York District's website: http

  14. Towards sustainable material usage : time-dependent evaluation of upgrading technologies for recycling

    E-Print Network [OSTI]

    Gaustad, Gabrielle G

    2009-01-01

    As consumption in the US grows, so does concern about sustainable materials usage. Increasing recycling is a key component within a broad arsenal of strategies for moving towards sustainable materials usage. There are many ...

  15. Jefferson Lab's Education web site hits new high-usage record...

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

    web site hits new high-usage record during 2003 SOL season April 2, 2003 Jefferson Lab's Science Education web site is hitting new highs in usage - on a daily basis. Just yesterday...

  16. Jefferson Lab's Education Web Site Hits New High-Usage Record...

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

    Web Site Hits New High-Usage Record April 22, 2002 Jefferson Lab's Science Education web site hit a new high in usage yesterday. In a 24-hour-period nearly 125,000 pages were...

  17. Energy Department Announces $4.5 Million to Expand Usage of Alternativ...

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

    4.5 Million to Expand Usage of Alternative Fuels Energy Department Announces 4.5 Million to Expand Usage of Alternative Fuels July 16, 2014 - 11:00am Addthis In support of...

  18. Steam Oxidation and Chromia Evaporation in Ultra-Supercritical Steam Boilers and Turbines

    SciTech Connect (OSTI)

    Gordon H. Holcomb

    2009-01-01

    U.S. Department of Energy’s goals include power generation from coal at 60% efficiency, which requires steam conditions of up to 760 °C and 340 atm, so-called ultra-supercritical (USC) conditions. Evaporation of protective chromia scales is expected to be a primary corrosion mechanism. A methodology to calculate Cr evaporation rates from chromia scales was developed and combined with Cr diffusion calculations within the alloy (with a constant flux of Cr leaving the alloy from evaporation) to predict Cr concentration profiles and to predict the time until breakaway oxidation. At the highest temperatures and pressures, the time until breakaway oxidation was predicted to be quite short for the turbine blade, and of concern within the steam pipe and the higher temperature portions of the superheater tube. Alloy additions such as Ti may allow for a reduction in evaporation rate with time, mitigating the deleterious effects of chromia evaporation.

  19. Steam oxidation and chromia evaporation in ultrasupercritical steam boilers and turbines

    SciTech Connect (OSTI)

    Holcomb, G.R.

    2009-07-01

    The U.S. Department of Energy's goals include power generation from coal at 60% efficiency, which requires steam conditions of up to 760 {sup o}C and 340 atm, so-called ultrasupercritical conditions. Evaporation of protective chromia scales is a primary corrosion mechanism. A methodology to calculate Cr evaporation rates from chromia scales was developed and combined with Cr diffusion calculations within the alloy (with a constant flux of Cr leaving the alloy from evaporation) to predict Cr concentration profiles and to predict the time until breakaway oxidation. At the highest temperatures and pressures, the time until breakaway oxidation was quite short for the turbine blade, and of concern within the steam pipe and the higher temperature portions of the superheater tube. Alloy additions such as Ti may allow for a reduction in evaporation rate with time, mitigating the deleterious effects of chromia evaporation.

  20. SUPERCRITICAL STEAM CYCLE FOR NUCLEAR POWER PLANT

    SciTech Connect (OSTI)

    Tsiklauri, Georgi V.; Talbert, Robert J.; Schmitt, Bruce E.; Filippov, Gennady A.; Bogojavlensky, Roald G.; Grishanin, Evgeny I.

    2005-07-01

    Revolutionary improvement of the nuclear plant safety and economy with light water reactors can be reached with the application of micro-fuel elements (MFE) directly cooled by a supercritical pressure light-water coolant-moderator. There are considerable advantages of the MFE as compared with the traditional fuel rods, such as: Using supercritical and superheated steam considerably increases the thermal efficiency of the Rankine cycle up to 44-45%. Strong negative coolant and void reactivity coefficients with a very short thermal delay time allow the reactor to shutdown quickly in the event of a reactivity or power excursion. Core melting and the creation of corium during severe accidents are impossible. The heat transfer surface area is larger by several orders of magnitude due to the small spherical dimensions of the MFE. The larger heat exchange surface significantly simplifies residual heat removal by natural convection and radiation from the core to a subsequent passive system of heat removal.

  1. Method and apparatus for improving the performance of a steam driven power system by steam mixing

    DOE Patents [OSTI]

    Tsiklauri, Georgi V. (Richland, WA); Durst, Bruce M. (Kennewick, WA); Prichard, Andrew W. (Richland, WA); Reid, Bruce D. (Pasco, WA); Burritt, James (Virginia Beach, VA)

    1998-01-01

    A method and apparatus for improving the efficiency and performance of a steam driven power plant wherein addition of steam handling equipment to an existing plant results in a surprising increase in plant performance. For Example, a gas turbine electrical generation system with heat recovery boiler may be installed along with a micro-jet high pressure and a low pressure mixer superheater. Depending upon plant characteristics, the existing moisture separator reheater (MSR) can be either augmented or done away with. The instant invention enables a reduction in T.sub.hot without a derating of the reactor unit, and improves efficiency of the plant's electrical conversion cycle. Coupled with this advantage is a possible extension of the plant's fuel cycle length due to an increased electrical conversion efficiency. The reduction in T.sub.hot further allows for a surprising extension of steam generator life. An additional advantage is the reduction in erosion/corrosion of secondary system components including turbine blades and diaphragms. The gas turbine generator used in the instant invention can also replace or augment existing peak or emergency power needs. Another benefit of the instant invention is the extension of plant life and the reduction of downtime due to refueling.

  2. Addressing the Energy-Delay Tradeoff in Wireless Networks with Load-Proportional Energy Usage

    E-Print Network [OSTI]

    Sikdar, Biplab

    Addressing the Energy-Delay Tradeoff in Wireless Networks with Load-Proportional Energy Usage Jie and achieve load-proportional energy usage. These techniques slow down the operation of the hardware and thus the energy-delay tradeoff while achieving load-proportional energy usage in wireless networks. The proposed

  3. The User Side of Sustainability: Modeling Behavior and Energy Usage in the Home

    E-Print Network [OSTI]

    Cook, Diane J.

    The User Side of Sustainability: Modeling Behavior and Energy Usage in the Home Chao Chena, , Diane that our lifestyle choices make on energy usage and the environment. As a result, research attention is be-based energy data. Next, it describes a method to correlate home- based activities with electricity usage

  4. PowerScope: A Tool for Profiling the Energy Usage of Mobile Applications

    E-Print Network [OSTI]

    Satyanarayanan, Mahadev "Satya"

    PowerScope: A Tool for Profiling the Energy Usage of Mobile Applications Jason Flinn and M In this paper, we describe the design and implementation of PowerScope, a tool for profiling energy usage of energy usage by process and procedure. Using PowerScope, we have been able to reduce the energy con

  5. The Implementation of Mobile Bank Usage from marketing point of view of bank managers in Jordan.

    E-Print Network [OSTI]

    The Implementation of Mobile Bank Usage from marketing point of view of bank managers in Jordan. The study aims at determine the effect of the implementation of Mobile Bank Usage from marketing point between the Implementation of Mobile Bank Usage from marketing point of view of bank managers in Jordan

  6. HeatProbe: A Thermal-based Power Meter for Accounting Disaggregated Electricity Usage

    E-Print Network [OSTI]

    Chu, Hao-hua

    consumer awareness of energy usage behavior. This study proposes HeatProbe, a thermal-based power meterHeatProbe: A Thermal-based Power Meter for Accounting Disaggregated Electricity Usage Bo-Jhang Ho1}@citi.sinica.edu.tw ABSTRACT To promote energy-saving behavior, disaggregating elec- tricity usage is critical for increasing

  7. Residential Lighting Usage Estimate Tool, v1.0

    Broader source: Energy.gov [DOE]

    By improving our understanding of residential lighting-energy usage and quantifying it across many different parameters, the new study will be of use to anyone doing energy estimates – such as utilities, market and investment analysts, and government agencies. It will also help manufacturers design products that not only better serve consumers' needs, but that maximize the energy savings that technologies like SSL make possible.

  8. Fuel bundle design for enhanced usage of plutonium fuel

    DOE Patents [OSTI]

    Reese, A.P.; Stachowski, R.E.

    1995-08-08

    A nuclear fuel bundle includes a square array of fuel rods each having a concentration of enriched uranium and plutonium. Each rod of an interior array of the rods also has a concentration of gadolinium. The interior array of rods is surrounded by an exterior array of rods void of gadolinium. By this design, usage of plutonium in the nuclear reactor is enhanced. 10 figs.

  9. Solidere : the battle for Beirut's Central District

    E-Print Network [OSTI]

    Mango, Tamam, 1981-

    2004-01-01

    The Beirut Central District was destroyed during the Lebanese Civil War which extended from 1975 to 1990. Unable to reconstruct the center itself, the Lebanese government turned to a private Real Estate Holding Company ...

  10. Applied Solutions Webinar: Insights Into District Energy

    Office of Energy Efficiency and Renewable Energy (EERE)

    Local governments and their communities that inhabit dense locations can take advantage of district heating and/or cooling systems as a way to increase energy efficiency and reliability while...

  11. Questions about Groundwater Conservation Districts in Texas 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Silvy, Valeen

    2008-09-22

    Groundwater conservation districts (GCDs) are being created in many parts of Texas to allow local citizens to manage and protect their groundwater. This publication answers frequently asked questions about groundwater and GCDs....

  12. District of Columbia Recovery Act State Memo

    Broader source: Energy.gov [DOE]

    The American Recovery & Reinvestment Act (ARRA) is making a meaningful down payment on the nation’s energy and environmental future. The Recovery Act investments in the District of Columbia...

  13. Merced Irrigation District- PV Buydown Program

    Broader source: Energy.gov [DOE]

    Merced Irrigation District (MID) offers its residential, commercial and non-profit customers a rebate for installing solar electric photovoltaic (PV) systems on their homes and offices. For 2015,...

  14. Chemical tailoring of steam to remediate underground mixed waste contaminents

    DOE Patents [OSTI]

    Aines, Roger D. (Livermore, CA); Udell, Kent S. (Berkeley, CA); Bruton, Carol J. (Livermore, CA); Carrigan, Charles R. (Tracy, CA)

    1999-01-01

    A method to simultaneously remediate mixed-waste underground contamination, such as organic liquids, metals, and radionuclides involves chemical tailoring of steam for underground injection. Gases or chemicals are injected into a high pressure steam flow being injected via one or more injection wells to contaminated soil located beyond a depth where excavation is possible. The injection of the steam with gases or chemicals mobilizes contaminants, such as metals and organics, as the steam pushes the waste through the ground toward an extraction well having subatmospheric pressure (vacuum). The steam and mobilized contaminants are drawn in a substantially horizontal direction to the extraction well and withdrawn to a treatment point above ground. The heat and boiling action of the front of the steam flow enhance the mobilizing effects of the chemical or gas additives. The method may also be utilized for immobilization of metals by using an additive in the steam which causes precipitation of the metals into clusters large enough to limit their future migration, while removing any organic contaminants.

  15. Red Storm usage model :Version 1.12.

    SciTech Connect (OSTI)

    Jefferson, Karen L.; Sturtevant, Judith E.

    2005-12-01

    Red Storm is an Advanced Simulation and Computing (ASC) funded massively parallel supercomputer located at Sandia National Laboratories (SNL). The Red Storm Usage Model (RSUM) documents the capabilities and the environment provided for the FY05 Tri-Lab Level II Limited Availability Red Storm User Environment Milestone and the FY05 SNL Level II Limited Availability Red Storm Platform Milestone. This document describes specific capabilities, tools, and procedures to support both local and remote users. The model is focused on the needs of the ASC user working in the secure computing environments at Los Alamos National Laboratory (LANL), Lawrence Livermore National Laboratory (LLNL), and SNL. Additionally, the Red Storm Usage Model maps the provided capabilities to the Tri-Lab ASC Computing Environment (ACE) requirements. The ACE requirements reflect the high performance computing requirements for the ASC community and have been updated in FY05 to reflect the community's needs. For each section of the RSUM, Appendix I maps the ACE requirements to the Limited Availability User Environment capabilities and includes a description of ACE requirements met and those requirements that are not met in that particular section. The Red Storm Usage Model, along with the ACE mappings, has been issued and vetted throughout the Tri-Lab community.

  16. Thermo-gasification of steam classified municipal solid waste

    SciTech Connect (OSTI)

    Eley, M.H.; Sebghati, J.M.

    1996-12-31

    Municipal solid waste (MSW) has been processed using a procedure called steam classification. This material has been examined for use as a combustion fuel, feedstock for composting, and cellulytic enzyme hydrolysis. An initial study has been conducted using a prototype plasma arc pyrolysis system to transform the steam classified MSW into a pyrolysis gas and vitrified material. With 136 kg (300 lbs) of the steam classified MSW pyrolysized at a feed rate of 22.7 kg/hour (50 lbs/hour), samples of the gas and grasslike material were captured for analysis. A presentation of the emission data and details on the system used will be presented.

  17. Why Condensing Steam Turbines are More Efficient than Gas Turbines 

    E-Print Network [OSTI]

    Nelson, K. E.

    1988-01-01

    turbine at 75'rc adiabatic efficiency to a vacuum of 2"Hg. No steam is extracted. 15,7 ~Blu/hr STACK Figure 3. Enthalpy analysis of power plant cycle. Analyzing this system points to the steam turbine condenser as the source of inefficiency... it's thrown away. Why be concerned about throwing away something that has virtually no value? But there is concern. The steam turbine condenser is nearly always viewed as the source of inefficiency in the cycle. The problem is that the wrong thing...

  18. Steam bubble collapse induced water hammer in draining pipes

    SciTech Connect (OSTI)

    Griffith, P.; Silva, R.J.

    1991-08-01

    When hot steam replaces cold condensate in a horizontal or almost horizontal pipe, a steam bubble collapse induced water hammer often results. The effect of condensate drainage velocity and pipe declination on the incidence of steam bubble collapse induced water hammer is investigated experimentally. Declining the pipe more than 2.4{degrees} allows drainage velocities up to 3 ft/sec (1m/s) in a two inch (5 cm) pipe without water hammer. A semi-empirical theory allows extrapolation to other pressures, pipe sizes and inclinations. 4 refs.

  19. 1. Introduction The efficiency of steam turbines can be improved by in-

    E-Print Network [OSTI]

    Cambridge, University of

    1. Introduction The efficiency of steam turbines can be improved by in- creasing the maximum-efficiency power plant. 2. Turbines, Steam, Efficiency and Power Plant A power plant has a steam generator which the operating pressure is below about 22 MPa, in which case the steam is separated and passed on to the turbine

  20. DYNAMIC SIMULATION OF MONO-TUBE CAVITY RECEIVERS FOR DIRECT STEAM GENERATION

    E-Print Network [OSTI]

    for intended deployment in large arrays of dishes, with steam directed to a central large steam turbine powerDYNAMIC SIMULATION OF MONO-TUBE CAVITY RECEIVERS FOR DIRECT STEAM GENERATION José Zapata 1 , John dish has been in operation since 2010 with a mono-tube steam cavity receiver, the SG4 system

  1. ESTIMATION OF OUTLET MASS FLOW FOR A MONO-TUBE CAVITY RECEIVER FOR DIRECT STEAM GENERATION

    E-Print Network [OSTI]

    arrays of parabolic dishes, where each collector contributes steam to a central steam-turbine power blockESTIMATION OF OUTLET MASS FLOW FOR A MONO-TUBE CAVITY RECEIVER FOR DIRECT STEAM GENERATION José This paper presents recent developments on a dynamic model for a mono-tube cavity receiver for direct steam

  2. DIRECT STEAM GENERATION USING THE SG4 500m2 PARABOLOIDAL DISH CONCENTRATOR

    E-Print Network [OSTI]

    steam turbine power block. As well as DSG, the ANU group is investigating energy conversion options conveyed the steam to our 50 kWe steam turbine; the new dish is oversized for the current engine, so someDIRECT STEAM GENERATION USING THE SG4 500m2 PARABOLOIDAL DISH CONCENTRATOR Greg Burgess 1 , Keith

  3. Corrections to "Proving Safety Properties of the Steam Boiler Controller" Correction Sheet

    E-Print Network [OSTI]

    Lynch, Nancy

    Corrections to "Proving Safety Properties of the Steam Boiler Controller" 1 Correction Sheet After our paper "Proving Safety Properties of the Steam Boiler Controller" went already to print, Myla_steam_water_est(sr) = #12;Corrections to "Proving Safety Properties of the Steam Boiler Controller" 2 7. p.11, The initial

  4. Rotating diffuser for pressure recovery in a steam cooling circuit of a gas turbine

    DOE Patents [OSTI]

    Eldrid, Sacheverel Q. (Saratoga Springs, NY); Salamah, Samir A. (Niskayuna, NY); DeStefano, Thomas Daniel (Ballston Lake, NY)

    2002-01-01

    The buckets of a gas turbine are steam-cooled via a bore tube assembly having concentric supply and spent cooling steam return passages rotating with the rotor. A diffuser is provided in the return passage to reduce the pressure drop. In a combined cycle system, the spent return cooling steam with reduced pressure drop is combined with reheat steam from a heat recovery steam generator for flow to the intermediate pressure turbine. The exhaust steam from the high pressure turbine of the combined cycle unit supplies cooling steam to the supply conduit of the gas turbine.

  5. A PRACTICAL ONTOLOGY FOR THE LARGE-SCALE MODELING OF SCHOLARLY ARTIFACTS AND THEIR USAGE

    SciTech Connect (OSTI)

    RODRIGUEZ, MARKO A. [Los Alamos National Laboratory; BOLLEN, JOHAN [Los Alamos National Laboratory; VAN DE SOMPEL, HERBERT [Los Alamos National Laboratory

    2007-01-30

    The large-scale analysis of scholarly artifact usage is constrained primarily by current practices in usage data archiving, privacy issues concerned with the dissemination of usage data, and the lack of a practical ontology for modeling the usage domain. As a remedy to the third constraint, this article presents a scholarly ontology that was engineered to represent those classes for which large-scale bibliographic and usage data exists, supports usage research, and whose instantiation is scalable to the order of 50 million articles along with their associated artifacts (e.g. authors and journals) and an accompanying 1 billion usage events. The real world instantiation of the presented abstract ontology is a semantic network model of the scholarly community which lends the scholarly process to statistical analysis and computational support. They present the ontology, discuss its instantiation, and provide some example inference rules for calculating various scholarly artifact metrics.

  6. Steam Partnerships: Case Study of Improved Energy Efficiency 

    E-Print Network [OSTI]

    Calogero, M. V.; Hess, R. E.; Leigh, N.

    2002-01-01

    energy consumers. They have supplied the energy commodities (fuel, electricity, or water) and may have even assisted with energy (steam) generation and production. But in most cases, their assistance and expertise came up short when dealing...

  7. Steam Efficiency: Impacts from Boilers to the Boardroom 

    E-Print Network [OSTI]

    Russell, C.

    2000-01-01

    potentially include increased shareholder value, market branding opportunities, avoidance of emission control penalties, and improvements in workplace safety. This discussion also covers the U.S. Department of Energy's BestPractices Steam program, which...

  8. Thermohydraulic analysis of U-tube steam generators

    E-Print Network [OSTI]

    da Silva, Hugo Cardoso

    1984-01-01

    Recent trends in plant safety analysis reveal a need for benchmark analytical representations of the steam generators to aid in the improvement of system codes and of fast codes for operator assistance. A model for such ...

  9. Steam bubble collapse, water hammer and piping network response

    E-Print Network [OSTI]

    Gruel, R.

    Work on steam bubble collapse, water hammer and piping network response was carried out in two closely related but distinct sections. Volume I of ,,is report details the experiments and analyses carried out in conjunction ...

  10. C++ Implementation of IAPWS Water/Steam Properties

    SciTech Connect (OSTI)

    Ling Zou; Haihua Zhao; Hongbin Zhang; Qiyue Lu

    2014-02-01

    For the calculations of water-involved systems, such as safety analysis of light water reactors, it is essential to provide accurate water properties. The International Association for the Properties of Water and Steam is an international non-profit association of national organizations concerned with the properties of water and steam. It provides internationally accepted formulations of water/steam properties for scientific and industrial applications. The purpose of this work is to provide a stand-alone software package in C++ programming language to provide accurate and efficient water/steam properties evaluation, based on the latest IAPWS releases. The discussion on related IAPWS releases, code implementations and verifications are provided in details.

  11. Steam System Management Program Yields Fuel Savings for Refinery 

    E-Print Network [OSTI]

    Gaines, L. D.; Hagan, K. J.

    1983-01-01

    The Phillips refinery at Borger, Texas, determined the need to develop a utility monitoring system. Shortly after this commitment was made, the refinery was introduced to a flowsheet modeling program that could be used to model and optimize steam...

  12. The Economics of Back-Pressure Steam Turbines 

    E-Print Network [OSTI]

    Wagner, J. R.; Choroszylow, E.

    1982-01-01

    Recently, back-pressure steam turbines have become the focal point in many cogeneration applications. This is a result of the savings in operating costs associated with the generation of electrical or mechanical power coincident with the economical...

  13. Steam Turbines for Critical Applications and Emergency or Standby Drives 

    E-Print Network [OSTI]

    Waterland, A. F.

    1986-01-01

    Steam turbines are frequently preferred over electric motors where operational continuity is important. This often imposes extreme premiums in operating cost. The parameters affecting relative economics are explored and a range of alternatives...

  14. Recover Heat from Boiler Blowdown - Steam Tip Sheet #10

    SciTech Connect (OSTI)

    2012-01-31

    This revised AMO tip sheet on recovering heat from boiler blowdown provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  15. Minimize Boiler Short Cycling Losses - Steam Tip Sheet #16

    SciTech Connect (OSTI)

    2012-01-01

    This revised AMO tip sheet on minimizing boiler short cycling losses provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  16. Minimize Boiler Short Cycling Losses - Steam Tip Sheet #16

    SciTech Connect (OSTI)

    2006-01-01

    This revised AMO tip sheet on minimizing boiler short cycling losses provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  17. Improving Steam System Performance: A Sourcebook for Industry...

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

    content of a solid. Dryers account for the largest end use of steam in the pulp and paper industry. 9 The chemical manufacturing, textiles, and food processing industries also...

  18. Steam Turbine Performance in Europe | GE Global Research

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

    Steam Turbine Performance in Europe 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...

  19. Rapid Recolonisation of Agricultural Soil by Microarthropods After Steam Disinfestation

    E-Print Network [OSTI]

    Cucco, Marco

    sterilisation. This research was supported by ACNA and MURST grants. Journal of Sustainable Agriculture, Vol. 27 to methyl bromide. Indeed, steam sterilisation presents several obvious advantages, such as the lack

  20. Hanford 300 Area steam transition preliminary utility options study

    SciTech Connect (OSTI)

    Olson, N.J.; Weakley, S.A.; Berman, M.J.

    1995-06-01

    The cost of steam in the Hanford 300 Area is approaching $60 per million Btu; the cost in industry is {approx} $10 per million Btu. The cost of steam in the 300 Area is expected to continue to increase because of the age of the central steam system, load decreases, safety requirements, and environmental regulations. The intent of this report is to evaluate options that would more cost-effectively met the future heating needs of the buildings in the 300 Area. In general, the options fall into two categories: central systems and distributed systems. A representative option from each category was analyzed using the life-cycle cost analysis (LCCA) techniques mandated by the federal government. The central plant option chosen for evaluation was the existing central steam plant modified to allow continued operation. The distributed option chosen was a dedicated heating system for each building.

  1. Steam System Efficiency Optimized After J.R. Simplot Fertilizer...

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

    J.R. Simplot Don plant in Pocatello, Idaho, repaired boiler feed water pumps such as the one pictured above, and revised boiler operating practices to reduce steam venting by 17...

  2. Energy Conservation Thru Steam Trap Surveys and Preventive Maintenance Programs 

    E-Print Network [OSTI]

    Boynton, T.; Dewhirst, B.

    1980-01-01

    justification for the survey program. Defective steam traps and their energy characteristics will also be discussed. An on-going preventive maintenance program can be initiated from the information derived from the survey. Sustained energy efficiency...

  3. Paducah Package Steam Boilers to Provide Efficiency, Environmental...

    Energy Savers [EERE]

    and operates to provide steam on demand. The boilers are most efficient when they run at full capacity. When a boiler is turned down, the efficiency drops. To maximize...

  4. Dow Chemical Company: Assessment Leads to Steam System Energy...

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

    describes how Dow Chemical Company saved 272,000 MMBtu and 1.9 million annually after increasing the steam system energy efficiency of a plant in Louisiana. Dow Chemical Company:...

  5. District heating strategy model: community manual

    SciTech Connect (OSTI)

    Hrabak, R. A.; Kron, Jr., N. F.; Pferdehirt, W. P.

    1981-10-01

    The US Department of Housing and Urban Development (HUD) and the US Department of Energy (DOE) cosponsor a program aimed at increasing the number of district heating and cooling systems. Twenty-eight communities have received HUD cooperative agreements to aid in a national feasibility assessment of district heating and cooling systems. The HUD/DOE program includes technical assistance provided by Argonne National Laboratory and Oak Ridge National Laboratory. Part of this assistance is a computer program, called the district heating strategy model, that performs preliminary calculations to analyze potential district heating and cooling systems. The model uses information about a community's physical characteristics, current electricity-supply systems, and local economic conditions to calculate heat demands, heat supplies from existing power plants and a new boiler, system construction costs, basic financial forecasts, and changes in air-pollutant emissions resulting from installation of a district heating and cooling system. This report explains the operation of the district heating strategy model, provides simplified forms for organizing the input data required, and describes and illustrates the model's output data. The report is written for three groups of people: (1) those in the HUD/DOE-sponsored communities who will be collecting input data, and studying output data, to assess the potential for district heating and cooling applications in their communiites; (2) those in any other communities who may wish to use the model for the same purpose; and (3) technical-support people assigned by the national laboratories to explain to community personnel how the model is used.

  6. Downhole steam generator having a downhole oxidant compressor

    DOE Patents [OSTI]

    Fox, R.L.

    1981-01-07

    Am improved apparatus is described for the downhole injection of steam into boreholes, for tertiary oil recovery. It includes an oxidant supply, a fuel supply, an igniter, a water supply, an oxidant compressor, and a combustor assembly. The apparatus is designed for efficiency, preheating of the water, and cooling of the combustion chamber walls. The steam outlet to the borehole is provided with pressure-responsive doors for closing the outlet in response to flameout. (DLC)

  7. Method for increasing steam decomposition in a coal gasification process

    DOE Patents [OSTI]

    Wilson, Marvin W. (Fairview, WV)

    1988-01-01

    The gasification of coal in the presence of steam and oxygen is significantly enhanced by introducing a thermochemical water-splitting agent such as sulfuric acid, into the gasifier for decomposing the steam to provide additional oxygen and hydrogen usable in the gasification process for the combustion of the coal and enrichment of the gaseous gasification products. The addition of the water-splitting agent into the gasifier also allows for the operation of the reactor at a lower temperature.

  8. Heat transfer and film cooling with steam injection 

    E-Print Network [OSTI]

    Conklin, Gary Eugene

    1982-01-01

    HEAT TRANSFER AND FILM COOLING WITH STEAM INJECTION A Thesis by GARY EUGENE CONKLIN Submitted to the Graduate College of Texas AIM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1982 Major... Subject: Mechanical Engineering HEAT TRANSFER AND FILM COOLING WITH STEAM INJECTION A Thesis by GARY EUGENE CONKLIN Approved as to style and content by: (Chairm of Committee) (Member) (Memb e r) (Me r (Head Departme ) May 1982 ABSTRACT Heat...

  9. Drum drying of black liquor using superheated steam impinging jets

    SciTech Connect (OSTI)

    Shiravi, A.H.; Mujumdar, A.S.; Kubes, G.J. [McGill Univ., Montreal, Quebec (Canada)

    1997-05-01

    A novel drum dryer for black liquor utilizing multiple impinging jets of superheated steam was designed and built to evaluate the performance characteristics and effects of various operating parameters thereon. Appropriate ranges of parameters such as steam jet temperature and velocity were examined experimentally to quantify the optimal operating conditions for the formation of black liquor film on the drum surface as well as the drying kinetics.

  10. An Analysis of Steam Process Heater Condensate Drainage Options 

    E-Print Network [OSTI]

    Risko, J. R.

    1999-01-01

    , Houston, TX, May 12-13, 1999 POTENTIAL INSTALLAnON DESIGNS -Stearn Inlet Control Valve with Outlet Steam Trap (Figure A). -Stearn Inlet Control Valve with Outlet Level Pot (Figure B). -Steam Inlet Control Valve with Outlet Condensate Level Control... (Figure C). -Condensate Outlet Control Valve and Level Override (Figure D). -Condensate Outlet Control Valve for Drainage and Set Point Control (Figure E). -Stearn Inlet Control Valve with Outlet Condensate PumplTrap Drainage (Figure F). An in...

  11. Method for increasing steam decomposition in a coal gasification process

    DOE Patents [OSTI]

    Wilson, M.W.

    1987-03-23

    The gasification of coal in the presence of steam and oxygen is significantly enhanced by introducing a thermochemical water- splitting agent such as sulfuric acid, into the gasifier for decomposing the steam to provide additional oxygen and hydrogen usable in the gasification process for the combustion of the coal and enrichment of the gaseous gasification products. The addition of the water-splitting agent into the gasifier also allows for the operation of the reactor at a lower temperature.

  12. FLASH predictions of the MB-2 steam line break tests

    SciTech Connect (OSTI)

    Lincoln, F.W.; Coffield, R.D.; Johnson, E.G.

    1992-12-31

    If a main steam line from a pressurized water reactor (PWR) steam generator were to rupture, the effect would be a depressurization of the secondary side and a consequential overcooling transient on the primary side. Analyses must accurately predict the effects of the rapid cooldown of the reactor vessel coolant on positive nuclear-kinetic reactivity feedback to the core plus thermal shock to the reactor vessel and other primary system components. Many early studies of the steam line break (SLB) transient made extremely conservative assumptions to maximize the primary to secondary heat transfer which in turn maximized the reactor vessel cooldown rate. Among the more significant of these assumptions was that flow from the break was pure steam and that the tube bundle remained covered until the secondary mass inventory was significantly reduced. The Model F commercial PWR steam generator testing performed in the Model Boiler No. 2 (MB-2) facility located at the Westinghouse Engineering Test Facility in Tampa, Florida provided data to better qualify the actual variation in these key parameters. A conclusion of this analysis is that the MB-2 steam line break data base is accurate and of sufficient detail to provide a valuable basis for making comparisons relative to code predictions. Results obtained using the FLASH transient safety analysis code were found to be in excellent agreement with the data.

  13. Single pressure steam bottoming cycle for gas turbines combined cycle

    SciTech Connect (OSTI)

    Zervos, N.

    1990-01-30

    This patent describes a process for recapturing waste heat from the exhaust of a gas turbine to drive a high pressure-high temperature steam turbine and a low pressure steam turbine. It comprises: delivering the exhaust of the gas turbine to the hot side of an economizer-reheater apparatus; delivering a heated stream of feedwater and recycled condensate through the cold side of the economizer-reheater apparatus in an indirect heat exchange relationship with the gas turbine exhaust on the hot side of the economizer-reheater apparatus to elevate the temperature below the pinch point of the boiler; delivering the discharge from the high pressure-high temperature steam turbine through the economizer-reheater apparatus in an indirect heat exchange relationship with the gas turbine exhaust on the hot side of the economizer-reheater apparatus; driving the high pressure-high temperature steam turbine with the discharge stream of feedwater and recycled condensate which is heated to a temperature below the pinch point of the boiler by the economizer-reheater apparatus; and driving the low pressure steam turbine with the discharged stream of the high pressure-high temperature steam turbine reheated below the pinch point of the boiler by the economizer-reheater apparatus.

  14. Downhole steam generator using low pressure fuel and air supply

    DOE Patents [OSTI]

    Fox, Ronald L. (Albuquerque, NM)

    1983-01-01

    An apparatus for generation of steam in a borehole for penetration into an earth formation wherein a spiral, tubular heat exchanger is used in the combustion chamber to isolate the combustion process from the water being superheated for conversion into steam. The isolation allows combustion of a relatively low pressure oxidant and fuel mixture for generating high enthalpy steam. The fuel is preheated by feedback of combustion gases from the top of the combustion chamber through a fuel preheater chamber. The hot exhaust gases of combustion at the bottom of the combustion chamber, after flowing over the heat exchanger enter an exhaust passage and pipe. The exhaust pipe is mounted inside the water supply line heating the water flowing into the heat exchanger. After being superheated in the heat exchanger, the water is ejected through an expansion nozzle and converts into steam prior to penetration into the earth formation. Pressure responsive doors are provided at a steam outlet downstream of the nozzle and close when the steam pressure is lost due to flameout.

  15. Heat recovery steam generator outlet temperature control system for a combined cycle power plant

    SciTech Connect (OSTI)

    Martens, A.; Myers, G.A.; McCarty, W.L.; Wescott, K.R.

    1986-04-01

    This patent describes a command cycle electrical power plant including: a steam turbine and at least one set comprising a gas turbine, an afterburner and a heat recovery steam generator having an attemperator for supplying from an outlet thereof to the steam turbine superheated steam under steam turbine operating conditions requiring predetermined superheated steam temperature, flow and pressure; with the gas turbine and steam turbine each generating megawatts in accordance with a plant load demand; master control means being provided for controlling the steam turbine and the heat recovery steam generator so as to establish the steam operating conditions; the combination of: first control means responsive to the gas inlet temperature of the heat recovery steam generator and to the plant load demand for controlling the firing of the afterburner; second control means responsive to the superheated steam predetermined temperature and to superheated steam temperature from the outlet for controlling the attemperator between a closed and an open position; the first and second control means being operated concurrently to maintain the superheated steam outlet temperature while controlling the load of the gas turbine independently of the steam turbine operating conditions.

  16. Closed circuit steam cooled turbine shroud and method for steam cooling turbine shroud

    DOE Patents [OSTI]

    Burdgick, Steven Sebastian (Schenectady, NY); Sexton, Brendan Francis (Simpsonville, SC); Kellock, Iain Robertson (Simpsonville, SC)

    2002-01-01

    A turbine shroud cooling cavity is partitioned to define a plurality of cooling chambers for sequentially receiving cooling steam and impingement cooling of the radially inner wall of the shoud. An impingement baffle is provided in each cooling chamber for receiving the cooling media from a cooling media inlet in the case of the first chamber or from the immediately upstream chamber in the case of the second through fourth chambers and includes a plurality of impingement holes for effecting the impingement cooling of the shroud inner wall.

  17. Evaluation of some transport and thermodynamic properties of superheated steam: Effects of steam temperature and pressure

    SciTech Connect (OSTI)

    Devahastin, S.; Mujumdar, A.S.

    2000-05-01

    For machine computation of drying, humidification and dehumidification processes it is necessary to have reliable correlations to predict transport and thermodynamic properties of the drying medium as functions of temperature and pressure. In this paper empirical correlations for specific volume, dynamic viscosity, thermal conductivity as well as specific isobaric heat capacity of superheated steam over the temperature range of 160--500 C and the pressure range of 100--500 kPa are presented. The Prandtl numbers at various temperatures and pressures are also presented. Comments on the properties and the use of these correlations are given.

  18. Clean Firetube Boiler Waterside Heat Transfer Surfaces, Energy Tips: STEAM, Steam Tip Sheet #7 (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-04-01

    A steam energy tip sheet for the Advanced Manufacturing Office (AMO). The prevention of scale formation in firetube boilers can result in substantial energy savings. Scale deposits occur when calcium, magnesium, and silica, commonly found in most water supplies, react to form a continuous layer of material on the waterside of the boiler heat exchange tubes. Scale creates a problem because it typically possesses a thermal conductivity, an order of magnitude less than the corresponding value for bare steel. Even thin layers of scale serve as an effective insulator and retard heat transfer. The result is overheating of boiler tube metal, tube failures, and loss of energy efficiency. Fuel consumption may increase by up to 5% in firetube boilers because of scale. The boilers steam production may be reduced if the firing rate cannot be increased to compensate for the decrease in combustion efficiency. Energy losses as a function of scale thickness and composition are given. Any scale in a boiler is undesirable. The best way to deal with scale is not to let it form in the first place. Prevent scale formation by: (1) Pretreating of boiler makeup water (using water softeners, demineralizers, and reverse osmosis to remove scale-forming minerals); (2) Injecting chemicals into the boiler feedwater; and (3) Adopting proper boiler blowdown practices.

  19. Energy Management Retrofit for Arlington Independent School District 

    E-Print Network [OSTI]

    Nooner, D.

    1989-01-01

    Like many school districts in the southwest, the Arlington Indement School District (AISD) felt a need to upgrade their schools to maximize their value for the gas and electricity being used. They felt they needed to make sure that energy...

  20. District Courts as Patent Laboratories Jeanne C. Fromer*

    E-Print Network [OSTI]

    Loudon, Catherine

    307 District Courts as Patent Laboratories Jeanne C. Fromer* Introduction .....................................................................................................................307 I. The Federal Circuit's Supervisory Role in Patent Law..........................................308 II. District Courts as the Federal Circuit's Patent Laboratories..............................311

  1. Collective private urban renewal in New Bedford's historic district

    E-Print Network [OSTI]

    Bullard, John K. (John Kilburn)

    1974-01-01

    This thesis examines the waterfront historic district in New Bedford, Massachusetts. It is, hopefully, the beginning of a process of collective private renewal that may lead the revival of the district as a vital element ...

  2. U.S. Army Corps of Engineers New York District

    E-Print Network [OSTI]

    US Army Corps of Engineers

    U.S. Army Corps of Engineers New York District Harbor Inspection September 16, 2015p , Vision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Colonel David Caldwell, Commander, USACE New York District 0945 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Group Photo of Partners New York Harbor Harbor Operations Overview

  3. Government works with technology to boost gas output/usage

    SciTech Connect (OSTI)

    Nicoll, H.

    1996-10-01

    Specially treated ethane gas from fields of the Moomba area in the Cooper basin of South Australia now flows freely through 870 mi of interstate gas pipeline to an end-user in Sydney, New South Wales. This unprecedented usage of ethane is the result of a long-term cooperative agreement. The producer sought to provide the end-user with ethane gas for usage as a petrochemical feedstock to manufacture ethylene and plastic goods. The end-user had strict specifications for a low-CO{sub 2}, very dry ethane product with a small percentage of methane. In order to meet these, the producer committed millions of dollars to construct a high-technology, state-of-the-art ethane treatment facility in the Moomba area, and lay an extensive pipeline. Santos also contracted with the amines supplier to provide a high-performance, deep CO{sub 2} removal solvent with good corrosion prevention characteristics. The paper discusses the Moomba field overflow, gas treatment, government cooperation, and project completion.

  4. Commercial and Multifamily Building Tenant Energy Usage Aggregation and Privacy

    SciTech Connect (OSTI)

    Livingston, Olga V.; Pulsipher, Trenton C.; Wang, Na

    2014-11-17

    In a number of cities and states, building owners are required to disclose and/or benchmark their building energy use. This requires the building owner to possess monthly whole-building energy usage information, which can be challenging for buildings in which individual tenants have their own utility meters and accounts with the utility. Some utilities and utility regulators have turned to aggregation of customer data as a way to give building owners the whole-building energy usage data while protecting customer privacy. However, no utilities or regulators appear to have conducted a concerted statistical, cybersecurity, and privacy analysis to justify the level of aggregation selected. Therefore, the Tennant Data Aggregation Task was established to help utilities address these issues and provide recommendations as well as a theoretical justification of the aggregation threshold. This study is focused on the use case of submitting data for ENERGY STAR Portfolio Manager (ESPM), but it also looks at other potential use cases for monthly energy consumption data.

  5. High-temperature oxidation of Zircaloy in hydrogen-steam mixtures. [PWR; BWR

    SciTech Connect (OSTI)

    Chung, H.M.; Thomas, G.R.

    1982-09-01

    Oxidation rates of Zircaloy-4 cladding tubes have been measured in hydrogen-steam mixtures at 1200 to 1700/sup 0/C. For a given isothermal oxidation temperature, the oxide layer thicknesses have been measured as a function of time, steam supply rate, and hydrogen overpressure. The oxidation rates in the mixtures were compared with similar data obtained in pure steam and helium-steam environments under otherwise identical conditions. The rates in pure steam and helium-steam mixtures were equivalent and comparable to the parabolic rates obtained under steam-saturated conditions and reported in the literature. However, when the helium was replaced with hydrogen of equivalent partial pressure, a significantly smaller oxidation rate was observed. For high steam-supply rates, the oxidation kinetics in a hydrogen-steam mixture were parabolic, but the rate was smaller than for pure steam or helium-steam mixtures. Under otherwise identical conditions, the ratio of the parabolic rate for hydrogen-steam to that for pure steam decreased with increasing temperature and decreasing steam-supply rate.

  6. Reliable steam: To cogenerate or not to cogenerate?

    SciTech Connect (OSTI)

    Jaber, D.; Jones, T.; D'Anna, L.; Vetterick, R.

    1999-07-01

    Leading industrial companies and institutions are forever seeking new and better ways to reduce their expenses, reduce waste, meet environmental standards, and, in general, improve their bottom-line. One approach to achieving all of these goals is a 100 year-old concept, cogeneration. Many industrial and institutional plants need thermal energy, generally as steam, for manufacturing processes and heating. They also need electric power for motors, lighting, compressed air and air conditioning. Traditionally, these fundamental needs are met separately. Steam is produced with industrial boilers and electricity is purchased from a local utility company. However, these needs can be met at the same time with cogeneration, using the same heat source. Cogeneration is the concurrent production of electrical power and thermal energy from the same heat source. Large steam users commonly take advantage of cogeneration by using high pressure steam with a back pressure turbine to generate electricity, and extract lower pressure steam from the turbine exhaust for their process needs. This approach reduces their electric utility bills while still providing thermal energy for industrial processes. The result is also a more efficient process that uses less total heat and discharges less smoke up the stack. Newer technologies are making cogeneration opportunities available to smaller-sized thermal plants, and electric utility deregulation opportunities are causing many CEOs to seriously consider cogeneration in their manufacturing plants. Whether steam is created through cogeneration or separate generation, many opportunities exist to improve productivity in the distribution system, operation, and maintenance. These opportunities are captured by taking a systems approach, which is promoted by programs such as the Department of Energy's Steam Challenge.

  7. Potential failure of steam generator tubes following a station blackout

    SciTech Connect (OSTI)

    Ward, L.W.; Palmrose, D.E.

    1994-12-31

    The U.S. Nuclear Regulatory Commission is considering changes to pressurized water reactor (PWR) requirements relating to steam generator tube plugging and repair criteria, including leakage monitoring. The proposed changes are known as the alternate tube plugging criteria (APC) and are intended to permit PWRs to operate with through-wall cracks in steam generator tubes subject to meeting a specified limit on predicted primary to secondary leakage under accident conditions. To assess the consequences of the alternate plugging criteria, analyses were performed for a station blackout sequence in which the reactor core melts while the reactor coolant system (RCS) remains at high pressure. Evaluations were conducted to investigate the potential for tube failure with and without secondary system depressurization. The excessive heat coupled with the high-pressure differentials across the steam generator tubes could result in creep rupture failure of the tubes during a severe accident, which could lead to a radiological release directly to the environment. In order to assess the safety significance of the APC, it is important to identify the level of steam generator tube leakage that can occur without challenging the previous study conclusions that steam generator creep failure will not occur prior to a surge line or hot-leg failure. To assess the effect of leakage on steam generator tube integrity during a core melt sequence with the RCS at high pressure and the secondary side of the steam generators pressurized and depressurized, an analysis was performed for a core melt event resulting from an unmitigated station blackout to identify the total steamenerator and tube leakage flow rates that could induce tube ruptures prior to other RCS boudary faliures that could depressurize the RCS.

  8. Optimization of steam explosion pretreatment. Final report

    SciTech Connect (OSTI)

    Foody, P.

    1980-04-01

    Different operating conditions are required to optimize the yield from each of the various fractions in the substrate. Xylose recovery is maximized at short cooking times whereas maximum lignin recovery requires much longer cooking times. Peak glucose yield and rumen digestibility occur at intermediate times. If process conditions are set for maximum glucose yield we have achieved a yield of 68% of the theoretical, based on an average of a dozen substrates tested. Individual results ranged from 46 to 87%. If the process is optimized for maximum total sugars (i.e. glucose plus xylose) we have obtained an average yield of 60%, with a range of 31 to 75%. With rumen microflora, the average value of the in-vitro cellulose digestibility was 82%, with a range of 41 to 90%. The optimum operating conditions for total sugars are a pressure of 500 to 550 psig with a cooking time of 40 to 50 seconds and 35% starting moisture content. Particle size is not a significant factor, nor is pre-steaming or use of a constricting die in the gun nozzle. High quality lignin can be extracted with 80% yield. The Iotech lignin is very soluble, has a low molecular weight and is reactive. The unique properties of the lignin derive from the explosion at the end of the pretreatment. A lignin formaldehyde resin has been successfully formulated and tested. It represents a high value utilization of the lignin byproduct with immediate market potential. A detailed engineering design of the process gives an estimated operating cost of $7.50/OD ton of biomass. At this low cost, the Iotech process achieves many important pretreatment goals in a single step. The substrate has been sterilized; it has been pulverized into a powder; the cellulose has been accessible; and a highly reactive lignin fraction can be recovered and utilized.

  9. Foster-Glocester Regional School District (Rhode Island) - Financing Profile

    SciTech Connect (OSTI)

    none,

    2008-12-01

    This document is an EnergySmart Schools Financing Profile of Foster-Glocester Regional School District in Rhode Island

  10. Washington's 7th congressional district: Energy Resources | Open...

    Open Energy Info (EERE)

    7th congressional district ARCH Venture Partners (Washington) Northwest National Marine Renewable Energy Center Washington Technology Center Registered Networking...

  11. Usage based indicators to assess the impact of scholarly works: architecture and method

    DOE Patents [OSTI]

    Bollen, Johan (Santa Fe, NM); Van De Sompel, Herbert (Santa Fe, NM)

    2012-03-13

    Although recording of usage data is common in scholarly information services, its exploitation for the creation of value-added services remains limited due to concerns regarding, among others, user privacy, data validity, and the lack of accepted standards for the representation, sharing and aggregation of usage data. A technical, standards-based architecture for sharing usage information is presented. In this architecture, OpenURL-compliant linking servers aggregate usage information of a specific user community as it navigates the distributed information environment that it has access to. This usage information is made OAI-PMH harvestable so that usage information exposed by many linking servers can be aggregated to facilitate the creation of value-added services with a reach beyond that of a single community or a single information service.

  12. West Basin Municipal Water District, California; Water/Sewer

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Exhibit D #12;Summary: West Basin Municipal Water District, California; Water/Sewer Primary Credi90023!! #12;Sttmma1·y: West Basin Municipal Water District, California; Water/Sewer Credit Profile US$16.STANDARDANDPOORS.COM/RATJNGSDJRECT MAY31 2013 2 I126639 I 301008236 #12;Summary: West Basin Municipal Water District, California; Water/Sewer

  13. NORTH SAN MATEO COUNTY SANITATION DISTRICT December 1, 2014

    E-Print Network [OSTI]

    US Army Corps of Engineers

    NORTH SAN MATEO COUNTY SANITATION DISTRICT December 1, 2014 US Army Corps of Engineers, Attn: CECW, on behalf of its subsidiary, the North San Mateo County Sanitation District, consistent with the Water of Daly City, California, on behalf of its subsidiary, the North San Mateo County Sanitation District. 2

  14. First university owned district heating system using biomass heat

    E-Print Network [OSTI]

    Northern British Columbia, University of

    Highlights · First university owned district heating system using biomass heat · Capacity: 15 MMBtu Main Campus District Heating Performance · Avoided: 3500 tonnes of CO2 · Particulate: less than 10 mg District Heating Goals To displace 85% of natural gas used for core campus heating. Fuel Bunker Sawmill

  15. New Forestry Commission District Office The new Forestry Commission

    E-Print Network [OSTI]

    New Forestry Commission District Office The new Forestry Commission District office at Smithton in construction The Forestry Commission's District office at Smithton in Inverness, Scotland, covers the national fuel heating system has proved effective during the winter of 2009/10, one of the harshest in 40 years

  16. Predictive control of supply temperature in district heating systems

    E-Print Network [OSTI]

    Predictive control of supply temperature in district heating systems Torben Skov Nielsen Henrik This report considers a new concept for controlling the supply temperature in district heating systems using stochastic modelling, prediction and control. A district heating systems is a di#30;cult system to control

  17. CONTROL OF SUPPLY TEMPERATURE IN DISTRICT HEATING SYSTEMS

    E-Print Network [OSTI]

    CONTROL OF SUPPLY TEMPERATURE IN DISTRICT HEATING SYSTEMS T.S. Nielsen, H. Madsen Informatics the supply temperature in district heating systems using stochastic modelling, prediction and control at Roskilde Varmeforsyning. The results obtained for the Roskilde district heating utility are evaluated

  18. 2014 Central District Deadlines Third-Year Progress Assessment Packets

    E-Print Network [OSTI]

    Jawitz, James W.

    2014 Central District Deadlines Third-Year Progress Assessment Packets Feb. 4 Central District are on the last page.) for each year that has the CED and DED signatures and rating. June 3 Final version of Third-Year DED submits Third-Year Progress assessment packet to District Faculty with Permanent Status for input

  19. Managing steam: An engineering guide to industrial, commercial, and utility systems

    SciTech Connect (OSTI)

    Makansi, J.

    1985-01-01

    This book is a guide to steam production, utilization, handling, transport, system optimization, and condensation and recovery. This book incudes a description of how steam, condensate, and hot water are used in various industrial, commercial, institutional, and utility sectors and explains how steam is generated and distributed. Waste-heat recovery, fluidized-bed boilers, and cogeneration systems and boiler control theory are discussed. The book also describes different types of valves, valve components, regulators, steam traps, and metering devices available for managing steam and condensate and discusses maintaining steam systems for optimum service and longer life.

  20. A ranking and exploration service based on large-scale usage data

    SciTech Connect (OSTI)

    Bollen, Johan [Los Alamos National Laboratory; Van De Sompel, Herbert L [Los Alamos National Laboratory; Balakireva, Lyudmila L [Los Alamos National Laboratory; Chute, Ryan M [Los Alamos National Laboratory

    2008-01-01

    This poster presents the architecture and user interface of a prototype service that was designed to allow end-users to explore the s tructure of science and perform assessments of scholarly impact on the basis of large-scale usage data. The underlying usage data set was constructed by the NIESUR project which collected 1 billion usage events from a wide range of publishers, aggregators and institutional consortia.

  1. Downhole steam generator with improved preheating, combustion and protection features

    DOE Patents [OSTI]

    Fox, Ronald L. (Albuquerque, NM)

    1983-01-01

    An apparatus for generation of steam in a borehole for penetration into an earth formation wherein feedback preheater means are provided for the fuel and water before entering the combustor assembly. First, combustion gases are conducted from the combustion chamber to locations in proximity to the water and fuel supplies. Secondly, both hot combustion gases and steam are conducted from the borehole back to the water and fuel supply. The water used for conversion to steam is passed in a countercurrent manner through a plurality of annular water flow channels surrounding the combustion chamber. In this manner, the water is preheated, and the combustion chamber is cooled simultaneously, thereby minimizing thermal stresses and deterioration of the walls of the combustion chamber. The water is injected through slotted inlets along the combustion chamber wall to provide an unstable boundary layer and stripping of the water from the wall for efficient steam generation. Pressure responsive doors are provided at the steam outlet of the combustor assembly. The outlet doors and fluid flow functions may be controlled by a diagnostic/control module. The module is positioned in the water flow channel to maintain a relatively constant, controlled temperature.

  2. Steam exit flow design for aft cavities of an airfoil

    DOE Patents [OSTI]

    Storey, James Michael (Clifton Park, NY); Tesh, Stephen William (Simpsonville, SC)

    2002-01-01

    Turbine stator vane segments have inner and outer walls with vanes extending therebetween. The inner and outer walls have impingement plates. Steam flowing into the outer wall passes through the impingement plate for impingement cooling of the outer wall surface. The spent impingement steam flows into cavities of the vane having inserts for impingement cooling the walls of the vane. The steam passes into the inner wall and through the impingement plate for impingement cooling of the inner wall surface and for return through return cavities having inserts for impingement cooling of the vane surfaces. A skirt or flange structure is provided for shielding the steam cooling impingement holes adjacent the inner wall aerofoil fillet region of the nozzle from the steam flow exiting the aft nozzle cavities. Moreover, the gap between the flash rib boss and the cavity insert is controlled to minimize the flow of post impingement cooling media therebetween. This substantially confines outflow to that exiting via the return channels, thus furthermore minimizing flow in the vicinity of the aerofoil fillet region that may adversely affect impingement cooling thereof.

  3. Bore tube assembly for steam cooling a turbine rotor

    DOE Patents [OSTI]

    DeStefano, Thomas Daniel (Ballston Lake, NY); Wilson, Ian David (Clifton Park, NY)

    2002-01-01

    An axial bore tube assembly for a turbine is provided to supply cooling steam to hot gas components of the turbine wheels and return the spent cooling steam. A pair of inner and outer tubes define a steam supply passage concentric about an inner return passage. The forward ends of the tubes communicate with an end cap assembly having sets of peripheral holes communicating with first and second sets of radial tubes whereby cooling steam from the concentric passage is supplied through the end cap holes to radial tubes for cooling the buckets and return steam from the buckets is provided through the second set of radial tubes through a second set of openings of the end cap into the coaxial return passage. A radial-to-axial flow transitioning device, including anti-swirling vanes is provided in the end cap. A strut ring adjacent the aft end of the bore tube assembly permits axial and radial thermal expansion of the inner tube relative to the outer tube.

  4. Loss-of-feedwater, steam generator tube rupture, and steam line break experiments: Steam generator transient response test program: Interim report

    SciTech Connect (OSTI)

    Mendler, O.J.; Takeuchi, K.; Young, M.Y.

    1987-01-01

    The Westinghouse Model Boiler No. 2 (MB-2) steam generator test model at the Engineering Test Facility in Tampa, Florida, was reinstrumented and modified for performing a series of tests simulating steam generator accident transients. The transients simulated were: loss of feed flow, steam generator tube rupture, and steam line break events. This document presents a description of (1) the model boiler and the associated test facility, (2) the tests performed, and (3) the analyses of the test results. Two LOF tests were analyzed in detail. Both tests were initiated from 100% power condition by shutting off the main feedwater flow. In LOF Test No. 1, the remaining boundary conditions were kept constant while in LOF Test No. 2, the power was rapidly reduced to 3%. The results show that the primary to secondary heat transfer becomes degraded when the collapsed water liquid level in the bundle region falls below approximately 50 inches. The SGTR test analyzed in detail - SGTR Test No. 2 - simulated the post-reactor-trip portion of the SGTR transient (T/sub prim/ = 560/sup 0/F). The transient was initiated by starting the SGTR flow injection and simultaneously shutting off the auxiliary feedwater. The water level rose and flooded the dryer to its mid-elevation by the end of the test. The primary carry-over was shown to be less than 0.4% of the tracer mass injected into the secondary side by the SGTR flow. SGTR Test No. 3 investigated the response of the intact steam generator. Reverse heat transfer and low heat flow conditions were simulated. The results have demonstrated the occurrence of temperature stratification in the secondary water which lasted for about 800 seconds.

  5. Cool Trends in District Energy: A Survey of Thermal Energy Storage Use in District Energy Utility Applications, June 2005

    Broader source: Energy.gov [DOE]

    A Survey of Thermal Energy Storage (TES) Use In District Energy (DE) Utility Applications in June 2005

  6. Effect of steam partial pressure on gasification rate and gas composition of product gas from catalytic steam gasification of HyperCoal

    SciTech Connect (OSTI)

    Atul Sharma; Ikuo Saito; Toshimasa Takanohashi [National Institute of Advanced Industrial Science and Technology, Ibaraki (Japan). Advanced Fuel Group

    2009-09-15

    HyperCoal was produced from coal by a solvent extraction method. The effect of the partial pressure of steam on the gasification rate and gas composition at temperatures of 600, 650, 700, and 750{sup o}C was examined. The gasification rate decreased with decreasing steam partial pressure. The reaction order with respect to steam partial pressure was between 0.2 and 0.5. The activation energy for the K{sub 2}CO{sub 3}-catalyzed HyperCoal gasification was independent of the steam partial pressure and was about 108 kJ/mol. The gas composition changed with steam partial pressure and H{sub 2} and CO{sub 2} decreased and CO increased with decreasing steam partial pressure. By changing the partial pressure of the steam, the H{sub 2}/CO ratio of the synthesis gas can be controlled. 18 refs., 7 figs., 2 tabs.

  7. Usage Statistics for www.math.purdue.edu - Last 12 Months

    E-Print Network [OSTI]

    Usage Statistics for www.math.purdue.edu. Summary Period: Last 12 Months Generated 29-Aug-2002 11:38 EST ...

  8. Table HC15.7 Air-Conditioning Usage Indicators by Four Most...

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

    or More Units... 5.4 0.7 Q 0.5 Q Central Air-Conditioning Usage Air-Conditioned Floorspace (Square Feet)...

  9. A Decision-Based Analysis of Compressed Air Usage Patterns in Automotive Manufacturing

    E-Print Network [OSTI]

    Yuan, Chris; Zhang, Teresa; Rangarajan, Arvind; Dornfeld, David; Ziemba, Bill; Whitbeck, Rod

    2006-01-01

    Air Usage Patterns in Automotive Manufacturing Chris Y. Yuanper vehicle built from automotive manufacturing facilities,2004). Compressed Air in Automotive Manufacturing Compressed

  10. Availability, usage and expected contribution of potential nursery habitats for the California halibut

    E-Print Network [OSTI]

    Fodrie, Fredrick Joel; Mendoza, Guillermo F.

    2006-01-01

    of a damsel?sh re?ect availability of suitable habitat.locate/ecss Availability, usage and expected contribution ofthe spatial coverage (availability) of all potential nursery

  11. Energy Savings Accomplished by Replacing Steam Ejectors with Electric Driven Vacuum Pumps in Crude Distillation Vacuum Towers 

    E-Print Network [OSTI]

    Nelson, R. E.

    1982-01-01

    The low cost of steam combined with the maintenance free operation of steam ejectors has assured their unquestioned use in providing the necessary vacuum for crude distillation vacuum towers. However, the cost of steam production has risen...

  12. Life assessment product catalog for boilers, steam pipes, and steam turbines

    SciTech Connect (OSTI)

    Hoffman, S. , Santa Clara, CA )

    1992-07-01

    Aging fossil power plants, escalating costs of new plant construction, and load growth rate uncertainties are motivating utilities to make the most effective use of critical components in existing power plants. To help meet this need, EPRI has refined existing methods and developed new methods of predicting the remaining life of key fossil plant components with greater accuracy and confidence. This report describes 16 EPRI products (guidelines, computer programs, and other tools) that apply these techniques to boiler tubes, boiler headers, steam lines, and turbine rotors, blades, and casings. Utility personnel, including plant engineers, maintenance supervisor, engineering department staff, plant operating staff, and performance engineers, can use these products to assess remaining component life, as well as to set cost-effective maintenance procedures, inspection schedules, and operating procedures.

  13. Steam Generator Group Project. Task 6. Channel head decontamination

    SciTech Connect (OSTI)

    Allen, R.P.; Clark, R.L.; Reece, W.D.

    1984-08-01

    The Steam Generator Group Project utilizes a retired-from-service pressurized-water-reactor steam generator as a test bed and source of specimens for research. An important preparatory step to primary side research activities was reduction of the radiation field in the steam generator channel head. This task report describes the channel head decontamination activities. Though not a programmatic research objective it was judged beneficial to explore the use of dilute reagent chemical decontamination techniques. These techniques presented potential for reduced personnel exposure and reduced secondary radwaste generation, over currently used abrasive blasting techniques. Two techniques with extensive laboratory research and vendors prepared to offer commercial application were tested, one on either side of the channel head. As indicated in the report, both techniques accomplished similar decontamination objectives. Neither technique damaged the generator channel head or tubing materials, as applied. This report provides details of the decontamination operations. Application system and operating conditions are described.

  14. Superalloys for ultra supercritical steam turbines--oxidation behavior

    SciTech Connect (OSTI)

    Holcomb, G.R.

    2008-09-01

    Goals of the U.S. Department of Energy’s Advanced Power Systems Initiatives include power generation from coal at 60% efficiency, which requires steam conditions of up to 760 °C and 340 atm, so called ultra-supercritical (USC) steam conditions. One of the important materials performance considerations is steam-side oxidation resistance. Evaporation of protective chromia scales is expected to be a primary corrosion mechanism under USC conditions. A methodology to calculate Cr evaporation rates from chromia scales with cylindrical geometries was developed that allows for the effects of CrO2(OH)2 saturation within the gas phase. This approach was combined with Cr diffusion calculations within the alloy (with a constant flux of Cr leaving the alloy from evaporation) to predict Cr concentration profiles as a function of exposure time and to predict the time until the alloy surface concentration of Cr reaches zero. This time is a rough prediction of the time until breakaway oxidation. A hypothetical superheater tube, steam pipe, and high pressure turbine steam path was examined. At the highest temperatures and pressures, the time until breakaway oxidation was predicted to be quite short for the turbine blade, and of concern within the steam pipe and the higher temperature portions of the superheater tube. The predicted time until breakaway oxidation increases dramatically with decreases in temperature and total pressure. Possible mitigation techniques were discussed, including those used in solid oxide fuel cell metallic interconnects (lowering the activity of Cr in the oxide scale by adding Mn to the alloy), and thermal barrier coating use on high pressure turbine blades for both erosion and chromia evaporation protection.

  15. Method to prevent/mitigate steam explosions in casting pits

    DOE Patents [OSTI]

    Taleyarkhan, R.P.

    1996-12-24

    Steam explosions can be prevented or mitigated during a metal casting process by the placement of a perforated flooring system in the casting pit. An upward flow of compressed gas through this perforated flooring system is introduced during the casting process to produce a buffer layer between any spilled molten metal and the cooling water in the reservoir. This buffer layer provides a hydrodynamic layer which acts to prevent or mitigate steam explosions resulting from hot, molten metal being spilled into or onto the cooling water. 3 figs.

  16. Method to prevent/mitigate steam explosions in casting pits

    DOE Patents [OSTI]

    Taleyarkhan, Rusi P. (Knoxville, TN)

    1996-01-01

    Steam explosions can be prevented or mitigated during a metal casting process by the placement of a perforated flooring system in the casting pit. An upward flow of compressed gas through this perforated flooring system is introduced during the casting process to produce a buffer layer between any spilled molten metal and the cooling water in the reservoir. This buffer layer provides a hydrodynamic layer which acts to prevent or mitigate steam explosions resulting from hot, molten metal being spilled into or onto the cooling water.

  17. Steam Traps-The Oft Forgotten Energy Conservation Treasure 

    E-Print Network [OSTI]

    Pychewicz, F. S.

    1985-01-01

    of every steam system. It is common to find 10-60% of the team traps in any facility malfunctioning. The result ant waste can easily equal 5-15% of a plant' total steam generation with concomitant processing and safety problems from failed open... into the effective utilization of st l am traps and, hopefully, will serve as a guide or your energy saving efforts in this vital are CHAMPION The key to the success of an effective team trap program rests with a single individual the person selected...

  18. Hydrogen generation utilizing integrated CO2 removal with steam reforming

    DOE Patents [OSTI]

    Duraiswamy, Kandaswamy; Chellappa, Anand S

    2013-07-23

    A steam reformer may comprise fluid inlet and outlet connections and have a substantially cylindrical geometry divided into reforming segments and reforming compartments extending longitudinally within the reformer, each being in fluid communication. With the fluid inlets and outlets. Further, methods for generating hydrogen may comprise steam reformation and material adsorption in one operation followed by regeneration of adsorbers in another operation. Cathode off-gas from a fuel cell may be used to regenerate and sweep the adsorbers, and the operations may cycle among a plurality of adsorption enhanced reformers to provide a continuous flow of hydrogen.

  19. Generating Electricity with your Steam System: Keys to Long Term Savings 

    E-Print Network [OSTI]

    Bullock, B.; Downing, A.

    2010-01-01

    The application of combined heat and power principals to existing plant steam systems can help produce electricity at more than twice efficiency of grid generated electricity. In this way, steam plant managers can realize substantial savings...

  20. Replace Pressure-Reducing Valves with Backpressure Turbogenerators - Steam Tip Sheet #20

    SciTech Connect (OSTI)

    2012-01-01

    This revised AMO steam tip sheet on replacing pressure-reducing valves provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  1. CO2 Reduction through Optimization of Steam Network in Petroleum Refineries: Evaluation of New Scenario 

    E-Print Network [OSTI]

    Manesh, M. H. K; Khodaie, H.; Amidpour, M.

    2008-01-01

    Steam network of petroleum refinery is energy intensive, and consequently contribute significantly to the greenhouse gases emissions. A simple model for the estimation of CO2 emissions associated with operation of steam network as encountered...

  2. Control Scheme Modifications Increase Efficiency of Steam Generation System at Exxon Mobil Gas Plant

    SciTech Connect (OSTI)

    2002-01-01

    This case study highlights control scheme modifications made to the steam system at ExxonMobil's Mary Ann Gas Plant in Mobile, Alabama, which improved steam flow efficiency and reduced energy costs.

  3. Three dimensional effects in analysis of PWR steam line break accident

    E-Print Network [OSTI]

    Tsai, Chon-Kwo

    A steam line break accident is one of the possible severe abnormal transients in a pressurized water reactor. It is required to present an analysis of a steam line break accident in the Final Safety Analysis Report (FSAR) ...

  4. Use a Vent Condenser to Recover Flash Steam Energy, Energy Tips...

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

    3 Use a Vent Condenser to Recover Flash Steam Energy When the pressure of saturated condensate is reduced, a portion of the liquid "flashes" to low-pressure steam. Depending on the...

  5. Use Vapor Recompression to Recover Low-Pressure Waste - Steam Tip Sheet #11

    SciTech Connect (OSTI)

    None

    2012-01-31

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

  6. The Passenger Steamboat Phoenix: An Archaeological Study of Early Steam Propulsion in North America 

    E-Print Network [OSTI]

    Schwarz, George 1977-

    2012-08-31

    The advent of steam contributed heavily to the economic transformation of early America, facilitating trade through the transportation of goods along the country’s lakes, rivers, and canals. Serious experimentation with steam navigation began...

  7. Energy Comparison Vacuum Producing Equipment - Mechanical Vacuum Pumps vs. Steam Ejectors 

    E-Print Network [OSTI]

    Foisy, E. C.; Munkittrick, M. T.

    1982-01-01

    vacuum on condensers, process reactors, or equipment and processes requiring subatmospheric conditions, has been to utilize steam ejectors. Due to the inherent operating inefficiency and wastefulness of the steam ejector, coupled with the rapidly...

  8. Case Study: Lessons Learned From Converting Electric Chillers to Steam Chillers in a Electric Deregulated Market. 

    E-Print Network [OSTI]

    Wohl, J.

    2001-01-01

    was that a flatter load profile due to steam cooling should allow better electric pricing from energy suppliers....

  9. Steam systems in industry: Energy use and energy efficiency improvement potentials

    E-Print Network [OSTI]

    Einstein, Dan; Worrell, Ernst; Khrushch, Marta

    2001-01-01

    Consumption for Steam production We had to establish a ‘new’ baseline for energy use by boilers because, firstly, the statistics

  10. A GeneralizationBased Approach to Clustering of Web Usage Sessions

    E-Print Network [OSTI]

    Fu, Yongjian

    A Generalization­Based Approach to Clustering of Web Usage Sessions Yongjian Fu, Kanwalpreet Sandhu,ksandhu,mingyig@umr.edu Abstract. The clustering of Web usage sessions based on the access patterns is studied. Access patterns of Web users are extracted from Web server log files, and then organized into sessions which represent

  11. Water usage dropping on campus, but UT hopes to lower it more

    E-Print Network [OSTI]

    Johnston, Daniel

    Water usage dropping on campus, but UT hopes to lower it more Photo Credit: Zachary Strain | Daily six years, UT has worked to decrease its water usage, but the University still has a ways to go if it the University was using one billion gallons of water per year. Across buildings, irrigation, chilling stations

  12. Scholarly E-Book Use across Disciplines: Content Analysis of Usage Reports and Search Terms

    E-Print Network [OSTI]

    Rosen, Jay

    community. In response to this demand, Columbia University Libraries (CUL) #12;2 | B a k k a l b a s i & G o the aggregate results indicate that e-book use continues to increase, usage rates are not uniform across the aggregate results indicate that e-book use continues to increase, usage rates are not uniform across

  13. A taxonomy of virtual worlds usage in education Ishbel Duncan, Alan Miller and Shangyi Jiang

    E-Print Network [OSTI]

    St Andrews, University of

    1 A taxonomy of virtual worlds usage in education Ishbel Duncan, Alan Miller and Shangyi Jiang from around the world. A taxonomy is then derived from these articles, delineating current theoretical and practical work on Virtual World usage, specifically in the field of education. The taxonomy identifies rich

  14. Web Usage Mining as a Tool for Personalization: a survey D. Pierrakos+

    E-Print Network [OSTI]

    Paliouras, George

    1 Web Usage Mining as a Tool for Personalization: a survey D. Pierrakos+ , G. Paliouras+ , C GREECE Abstract: This paper is a survey of recent work in the field of Web Usage Mining for the benefit of research on the personalization of Web-based information services. The essence of personalization

  15. Analysis of Electricity Usage for Domestic Heating Based on an Air-To-Water Heat Pump

    E-Print Network [OSTI]

    Treur, Jan

    Analysis of Electricity Usage for Domestic Heating Based on an Air-To-Water Heat Pump in a Real of an air to water heat pump in relation to outdoor temperatures is proposed and evaluated. This model into account. Real empirical data for usage of a heat pump over a whole heating season have been used to obtain

  16. A Model-Based Approach to Synthesizing Insulin Infusion Pump Usage Parameters for Diabetic Patients

    E-Print Network [OSTI]

    Sankaranarayanan, Sriram

    A Model-Based Approach to Synthesizing Insulin Infusion Pump Usage Parameters for Diabetic Patients Fainekos Abstract-- We present a model-based approach to synthesiz- ing insulin infusion pump usage parameters against varying meal scenarios and physiological conditions. Insulin infusion pumps are commonly

  17. Best Entry Points for Structured Document Retrieval Part II: Types, Usage and Effectiveness

    E-Print Network [OSTI]

    Lalmas, Mounia

    Best Entry Points for Structured Document Retrieval ­ Part II: Types, Usage and Effectiveness Jane documents. This paper examines the concept of best entry points, which are document components from which of best entry points in structured document retrieval, and their usage and effectiveness in real

  18. The Comparison of Usage and Availability Measurements for Evaluating Resource Douglas H. Johnson

    E-Print Network [OSTI]

    Steury, Todd D.

    The Comparison of Usage and Availability Measurements for Evaluating Resource Preference Douglas H and Conditions of Use, available at http://www.jstor.org/about/terms.html. JSTOR's Terms and Conditions of Use~etyof Amenca THE COMPARISON OF USAGE AND AVAILABILITY MEASUREMENTS FOR EVALUATING RESOURCE PREFERENCE1

  19. An Algebraic Speci cation of the Steam-Boiler Control System

    E-Print Network [OSTI]

    Bidoit, Michel

    An Algebraic Speci#12;cation of the Steam-Boiler Control System Michel Bidoit 1 , Claude Chevenier describe how to derive an algebraic speci#12;cation of the Steam-Boiler Control System starting from to specify the detection of the steam-boiler fail- ures. Finally we discuss validation and veri#12;cation

  20. Assertional Specification and Verification using PVS of the Steam Boiler Control System

    E-Print Network [OSTI]

    Hooman, Jozef

    Assertional Specification and Verification using PVS of the Steam Boiler Control System Jan Vitt 1 of the steam boiler control system has been derived using a formal method based on assumption/commitment pairs Introduction The steam boiler control system, as described in chapter AS of this book, has been designed