Sample records for urban water cycle

  1. Water Conservation with Urban Landscape Plants

    E-Print Network [OSTI]

    Hip, B. W.; Giordano, C.; Simpson, B.

    Water shortages are a common problem in much of the southwest. Increasing urbanization and increasing population places greater demands on dwindling water supplies. Over half of the water used in urban areas of the southwest is used...

  2. Water Cycle Pilot Study

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrincetonUsing Maps1DOE AwardsDNitrateEnergy Watch1 Water Cycle

  3. Urban Water Conservation along the Rio Grande

    E-Print Network [OSTI]

    Silvey, Valeen; Kaiser, Ronald; Lesikar, Bruce; Runyan, Craig

    2004-01-01T23:59:59.000Z

    Urban Water Conservation along the Rio Grande THE TEXAS A&M UNIVERSITY SYSTEM NEW MEXICO STATE UNIVERSITY An Inventory of Water Conservation Programs TR 269 SP 201 Valeen Silvy, 1 Ronald Kaiser, 2 Bruce Lesikar 3 and Craig Runyan... water running into the streets from irrigation systems. Urban water conservation incorporates water- saving measures and incentives for the home, on the landscape and throughout the city water distribution system. It is easy to differentiate be...

  4. Urban Water Conservation along the Rio Grande 

    E-Print Network [OSTI]

    Silvey, Valeen; Kaiser, Ronald; Lesikar, Bruce; Runyan, Craig

    2004-01-01T23:59:59.000Z

    interests against agriculture and financial resources against cultural values. Water supply is finite, even if it is part of a cycle. Water may be plentiful in some places and scarce in others. Until we are ready to make water conservation a pattern...

  5. On Parameter Estimation of Urban Storm-Water Runoff Model

    E-Print Network [OSTI]

    On Parameter Estimation of Urban Storm-Water Runoff Model Pedro Avellaneda1 ; Thomas P. Ballestero2 of these parameters are provided for modeling purposes and other urban storm-water quality applications. A normal runoff models are commonly used for urban storm-water quality applications DeCoursey 1985; Tsi- hrintzis

  6. Methodology for Assesment of Urban Water Planning Objectives

    E-Print Network [OSTI]

    Meier, W. L.; Thornton, B. M.

    TR-51 1973 Methodology for Assessment of Urban Water Planning Objectives W.L. Meier B.M. Thornton Texas Water Resources Institute Texas A&M University ...

  7. Integrated Planning and Management for Urban Water Supplies

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    Positions for Water Supply Reliability ................................. 15 4 Shortage Management Modeling.2: Diagram of Water Supply Reliability Model Structure ..................49 5.3: Steps Used in ShortageIntegrated Planning and Management for Urban Water Supplies Considering Multiple Uncertainties Jay

  8. Researcher explores economics of U.S. urban water demand

    E-Print Network [OSTI]

    Wythe, Kathy

    2009-01-01T23:59:59.000Z

    Story by Kathy Wythe tx H2O | pg. 24 Researcher explores economics of U.S. urban water demand Photo by: Danielle Supercinski tx H2O | pg. 25 With projected demands for future water supplies becoming more critical, understand- ing urban... contributing to urban water demand in the United States. They analyzed how water use is affected by water prices in nearly 200 U.S. cities. ?It?s interesting that many people still buy into the myth that water demand is not price- sensitive, even though...

  9. `Perfect ventilation, good sewerage and effective water closets': Urban factors in the development

    E-Print Network [OSTI]

    `Perfect ventilation, good sewerage and effective water closets': Urban factors in the development sanitation ``Perfect ventilation, good sewerage and effective water closets': Urban factors ventilation, good sewerage and effective water closets': Urban factors in the development of modern nursing

  10. Geothermal Water Use: Life Cycle Water Consumption, Water Resource Assessment, and Water Policy Framework

    SciTech Connect (OSTI)

    Schroeder, Jenna N.

    2014-06-10T23:59:59.000Z

    This report examines life cycle water consumption for various geothermal technologies to better understand factors that affect water consumption across the life cycle (e.g., power plant cooling, belowground fluid losses) and to assess the potential water challenges that future geothermal power generation projects may face. Previous reports in this series quantified the life cycle freshwater requirements of geothermal power-generating systems, explored operational and environmental concerns related to the geochemical composition of geothermal fluids, and assessed future water demand by geothermal power plants according to growth projections for the industry. This report seeks to extend those analyses by including EGS flash, both as part of the life cycle analysis and water resource assessment. A regional water resource assessment based upon the life cycle results is also presented. Finally, the legal framework of water with respect to geothermal resources in the states with active geothermal development is also analyzed.

  11. Geothermal Water Use: Life Cycle Water Consumption, Water Resource Assessment, and Water Policy Framework

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Schroeder, Jenna N.

    This report examines life cycle water consumption for various geothermal technologies to better understand factors that affect water consumption across the life cycle (e.g., power plant cooling, belowground fluid losses) and to assess the potential water challenges that future geothermal power generation projects may face. Previous reports in this series quantified the life cycle freshwater requirements of geothermal power-generating systems, explored operational and environmental concerns related to the geochemical composition of geothermal fluids, and assessed future water demand by geothermal power plants according to growth projections for the industry. This report seeks to extend those analyses by including EGS flash, both as part of the life cycle analysis and water resource assessment. A regional water resource assessment based upon the life cycle results is also presented. Finally, the legal framework of water with respect to geothermal resources in the states with active geothermal development is also analyzed.

  12. Selection of Native Wetland Plants for Water Treatment of Urban Runoff

    E-Print Network [OSTI]

    Rejmankova, Eliska; Bayer, David E

    1995-01-01T23:59:59.000Z

    UC Davis KEYWORDS: Wetlands, Water Treatment, Urban Runoff,of Native Wetland Plants for Water Treatment of UrbanValley Wetlands Biomass Response to Heavy Metal Treatment

  13. Complex Adaptive Systems Simulation-Optimization Framework for Adaptive Urban Water Resources Management

    E-Print Network [OSTI]

    Giacomoni, Marcio

    2012-10-19T23:59:59.000Z

    Population growth, urbanization and climate change threaten urban water systems. The rise of demands caused by growing urban areas and the potential decrease of water availability caused by the increase of frequency and severity of droughts...

  14. Multi-cycle boiling water reactor fuel cycle optimization

    SciTech Connect (OSTI)

    Ottinger, K.; Maldonado, G.I. [University of Tennessee, 311 Pasqua Engineering Building, Knoxville, TN 37996-2300 (United States)

    2013-07-01T23:59:59.000Z

    In this work a new computer code, BWROPT (Boiling Water Reactor Optimization), is presented. BWROPT uses the Parallel Simulated Annealing (PSA) algorithm to solve the out-of-core optimization problem coupled with an in-core optimization that determines the optimum fuel loading pattern. However it uses a Haling power profile for the depletion instead of optimizing the operating strategy. The result of this optimization is the optimum new fuel inventory and the core loading pattern for the first cycle considered in the optimization. Several changes were made to the optimization algorithm with respect to other nuclear fuel cycle optimization codes that use PSA. Instead of using constant sampling probabilities for the solution perturbation types throughout the optimization as is usually done in PSA optimizations the sampling probabilities are varied to get a better solution and/or decrease runtime. The new fuel types available for use can be sorted into an array based on any number of parameters so that each parameter can be incremented or decremented, which allows for more precise fuel type selection compared to random sampling. Also, the results are sorted by the new fuel inventory of the first cycle for ease of comparing alternative solutions. (authors)

  15. The DOE Water Cycle Pilot Study

    SciTech Connect (OSTI)

    Miller, N.L.; King, A.W.; Miller, M.A.; Springer, E.P.; Wesely, M.L.; Bashford, K.E.; Conrad, M.E.; Costigan, K.; Foster, P.N.; Gibbs, H.K.; Jin, J.; Klazura, J.; Lesht, B.M.; Machavaram, M.V.; Pan, F.; Song, J.; Troyan, D.; Washington-Allen, R.A.

    2003-09-20T23:59:59.000Z

    A Department of Energy (DOE) multi-laboratory Water Cycle Pilot Study (WCPS) investigated components of the local water budget at the Walnut River Watershed in Kansas to study the relative importance of various processes and to determine the feasibility of observational water budget closure. An extensive database of local meteorological time series and land surface characteristics was compiled. Numerical simulations of water budget components were generated and, to the extent possible, validated for three nested domains within the Southern Great Plains; the DOE Atmospheric Radiation Measurement/Cloud Atmospheric Radiation Testbed (ARM/CART), the Walnut River Watershed (WRW), and the Whitewater Watershed (WW), Kansas A 2-month Intensive Observation Period (IOP) was conducted to gather detailed observations relevant to specific details of the water budget, including fine-scale precipitation, streamflow, and soil moisture measurements not made routinely by other programs. Event and season al water isotope (delta 18O, delta D) sampling in rainwater, streams, soils, lakes, and wells provided a means of tracing sources and sinks within and external to the WW, WRW, and the ARM/CART domains. The WCPS measured changes in leaf area index for several vegetation types, deep groundwater variations at two wells, and meteorological variables at a number of sites in the WRW. Additional activities of the WCPS include code development toward a regional climate model with water isotope processes, soil moisture transect measurements, and water level measurements in ground water wells.

  16. Urban Sodicity in a Humid Subtropical Climate: Impact on Biogeochemical Cycling

    E-Print Network [OSTI]

    Steele, Meredith Kate

    2012-10-19T23:59:59.000Z

    Understanding the mechanisms of non-point source carbon and nutrients in urban watersheds will help to develop policies to maintain surface water quality and prevention of eutrophication. The purpose of this dissertation is to investigate...

  17. NFWF Five Star & Urban Waters Restoration Program

    Broader source: Energy.gov [DOE]

    The National Fish and Wildlife Foundation (NFWF) is accepting applications for up to $2.1 million to develop community capacity to sustain local natural resources for future generations by providing modest financial assistance to diverse local partnership for wetland, riparian, forest and coastal habitat restoration, urban wildlife conservation, stormwater management as well as outreach, education and stewardship.

  18. Highly efficient 6-stroke engine cycle with water injection

    DOE Patents [OSTI]

    Szybist, James P; Conklin, James C

    2012-10-23T23:59:59.000Z

    A six-stroke engine cycle having improved efficiency. Heat is recovered from the engine combustion gases by using a 6-stroke engine cycle in which combustion gases are partially vented proximate the bottom-dead-center position of the fourth stroke cycle, and water is injected proximate the top-dead-center position of the fourth stroke cycle.

  19. Water Conservation with Urban Landscape Plants 

    E-Print Network [OSTI]

    Hip, B. W.; Giordano, C.; Simpson, B.

    1983-01-01T23:59:59.000Z

    shrubs and of the ones compared, Texas barberry appeared to have the most promise for use in water conserving landscapes....

  20. Detector LifeCycle Costs and Considerations Mobility Measurement in Urban Transportation Pooled Fund Study

    E-Print Network [OSTI]

    Detector LifeCycle Costs and Considerations Mobility Measurement in Urban Transportation tool of typical data collection devices along with estimated lifecycle costs. The objectives of the costestimating detector tool are: 1. Provide an overview of the key issues and cost elements one needs

  1. Brice Nichols and Kara Kockelman URBAN FORM AND LIFE-CYCLE ENERGY CONSUMPTION

    E-Print Network [OSTI]

    Kockelman, Kara M.

    and employment density profiles. Five residential and three commercial neighborhood types are distributed across) and provide a rare view of total annual energy demands from the urban residential and commercial sectors. ABSTRACT This work estimates life-cycle energy demands for residents and workers in different built

  2. Atmosphere-Water Interaction of Chloroform, Toluene, and MTBE in Small Perennial Urban Streams

    E-Print Network [OSTI]

    Atmosphere-Water Interaction of Chloroform, Toluene, and MTBE in Small Perennial Urban Streams-butyl ether (MTBE) are frequently detected VOCs in the atmosphere, surface water, and ground water in urban not be the predominant source of chloroform and toluene in the two urban streams. In contrast, MTBE may be coming from

  3. Stormwater and Urban Water Systems Modeling Conference. In: Models and Applications to Urban Water Systems, Vol. 12 (edited by W. James). CHI. Guelph, Ontario, pp. 257 294. 2004.

    E-Print Network [OSTI]

    Pitt, Robert E.

    Stormwater and Urban Water Systems Modeling Conference. In: Models and Applications to Urban Water AND EXAMINATION OF A MUNICIPAL SEPARATE STORM SEWER SYSTEM DATABASE Robert Pitt, Alex Maestre, Renee Morquecho of Water 104(b)3 grant in 2001 to collect and evaluate stormwater data from a representative number

  4. Primary Research Paper Untangling the confounding effects of urbanization and high water level on

    E-Print Network [OSTI]

    McMaster University

    Primary Research Paper Untangling the confounding effects of urbanization and high water level form 1 December 2004; accepted 15 December 2004 Key words: multiple stressors, water level

  5. Rethinking the light water reactor fuel cycle

    E-Print Network [OSTI]

    Shwageraus, Evgeni, 1973-

    2004-01-01T23:59:59.000Z

    The once through nuclear fuel cycle adopted by the majority of countries with operating commercial power reactors imposes a number of concerns. The radioactive waste created in the once through nuclear fuel cycle has to ...

  6. Natural streamflow cycles and effects on water supply reliability

    E-Print Network [OSTI]

    Felden, Fabrice

    2002-01-01T23:59:59.000Z

    ABSTRACT Natural Streamf low Cycles and Effects on Water Supply Reliability. (August 2002) Fabrice Felden, Diploma de I'Ecole Speciale des Travaux Publics Chair of Advisory Committee: Dr. Ralph A. Wurbs The Texas Natural Resource Conservation... and cycles in streamflows that could be directly correlated to climate changes. The presence of trends and/or cycles in streamflows is primarily studied to assess the significance of not directly considering climate change in the Texas Water Availability...

  7. WATER POVERTY IN THE PERI-URBAN TERRITORIES OF MUMBAI, INDIA

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 WATER POVERTY IN THE PERI-URBAN TERRITORIES OF MUMBAI, INDIA Anastasia Angueletou Ph.D. student addresses water poverty in the peri-urban areas of Mumbai1 . The term "water poverty" refers to a variety of situations where people lack from sufficient water in terms of quality and quantity or from enough money

  8. Geosynthetic Filters for Water Quality Improvement of Urban Storm Water Runoff

    E-Print Network [OSTI]

    Aydilek, Ahmet

    water treatment are retention ponds, detention basins, wetland ponds, and grass swales (Strecker et al are common subsurface storm water runoff treatment systems used in urban areas. Large subsurface fil- ters the treatment system (SEMCOG 2008). Removal of filtration media such as sand is highly labor

  9. Valuing the Environmental Benefits of Urban WaterConservation

    SciTech Connect (OSTI)

    Coughlin, Katie M.; Bolduc, Chris A.; Chan, Peter T.; Dunham-Whitehead, C.; Van Buskirk, R.D.

    2007-05-01T23:59:59.000Z

    This report documents a project undertaken for theCalifornia Urban Water Conservation Council (the Council) to create a newmethod of accounting for the diverse environmental benefits of raw watersavings. The environmental benefits (EB) model was designed to providewater utilities with a practical tool that they can use to assign amonetary value to the benefits that may accrue from implementing any ofthe Council-recommended Best Management Practices. The model treats onlyenvironmental services associated directly with water, and is intended tocover miscellaneous impacts that are not currently accounted for in anyother cost-benefit analysis.

  10. On-line Hydraulic State Estimation in Urban Water Networks Using Reduced Models

    E-Print Network [OSTI]

    Preis, Ami

    A Predictor-Corrector (PC) approach for on-line forecasting of water usage in an urban water system is presented and demonstrated. The M5 Model-Trees algorithm is used to predict water demands and Genetic Algorithms (GAs) ...

  11. Urban driving cycle results of retrofitted diesel oxidation catalysts on heavy duty vehicles

    SciTech Connect (OSTI)

    Brown, K.F. [Engine Control Systems Ltd., Aurora, Ontario (Canada); Rideout, G.

    1996-09-01T23:59:59.000Z

    This paper presents the emissions testing results of various heavy duty engines and vehicles with and without retrofitted diesel oxidation catalyst technology. 1987 Cummins L10 and 1991 DDC 6V92TA DDECII engine results over the US Heavy Duty Transient Test are presented for comparison to chassis test results. The vehicles in this study include two urban buses, two school buses and three heavy duty trucks. The Central Business District, New York Bus and New York Composite urban driving cycles have been used to evaluate baseline emissions and the catalyst performance on a heavy duty chassis dynamometer. The results demonstrate that 25--45% particulate reduction is readily achievable on a wide variety of heavy duty vehicles. Significant carbon monoxide and hydrocarbon reductions were also observed.

  12. 8th World Wide Workshop for Young Environmental Scientists WWW-YES-2008: Urban waters: resource or risks? 13-16 May 2008

    E-Print Network [OSTI]

    Boyer, Edmond

    support systems; sustainable development; developing countries. INTRODUCTION Urban water provision poses prevention, complicate the urban water system's environment. In this context, facing the challenges8th World Wide Workshop for Young Environmental Scientists WWW-YES-2008: Urban waters: resource

  13. The World Bank Indian Urban Water Report (July 2012) Yet Again, Thinking Backwards

    E-Print Network [OSTI]

    Sohoni, Milind

    on reform in the urban water sector in India. This WB report focuses on institutional and financial reform. These reports have largely set the framework within which administrators, elected representatives of the agenda for the reform of the urban water supply sector, as the WB sees it. The current report

  14. Modeling Urban Storm-Water Quality Treatment: Model Development and Application to a Surface Sand Filter

    E-Print Network [OSTI]

    Modeling Urban Storm-Water Quality Treatment: Model Development and Application to a Surface Sand management; Urban areas; Hydraulic models; Sand, filter; Parameters; Estimation; Water treatment. Author. Optimized model parameter values were calculated on a storm by storm basis. Thereafter, a gamma distribution

  15. Efficient Hydraulic State Estimation Technique Using Reduced Models of Urban Water Networks

    E-Print Network [OSTI]

    Preis, Ami

    This paper describes and demonstrates an efficient method for online hydraulic state estimation in urban water networks. The proposed method employs an online predictor-corrector (PC) procedure for forecasting future water ...

  16. december 1, 2012 vol xlviI nos 47 & 48 EPW Economic & Political Weekly22 World Bank's Urban Water

    E-Print Network [OSTI]

    Sohoni, Milind

    's Urban Water Report on India Thinking Backwards Milind Sohoni The latest World Bank report on reform, with the reports of 2006 and 2012, urban water reform. These reports have largely set the framework within which of the agenda for the reform of the urban water supply sector, as the WB sees it. The current report

  17. Solar High Temperature Water-Splitting Cycle with Quantum Boost

    SciTech Connect (OSTI)

    Taylor, Robin [SAIC] [SAIC; Davenport, Roger [SAIC] [SAIC; Talbot, Jan [UCSD] [UCSD; Herz, Richard [UCSD] [UCSD; Genders, David [Electrosynthesis Co.] [Electrosynthesis Co.; Symons, Peter [Electrosynthesis Co.] [Electrosynthesis Co.; Brown, Lloyd [TChemE] [TChemE

    2014-04-25T23:59:59.000Z

    A sulfur family chemical cycle having ammonia as the working fluid and reagent was developed as a cost-effective and efficient hydrogen production technology based on a solar thermochemical water-splitting cycle. The sulfur ammonia (SA) cycle is a renewable and sustainable process that is unique in that it is an all-fluid cycle (i.e., with no solids handling). It uses a moderate temperature solar plant with the solar receiver operating at 800°C. All electricity needed is generated internally from recovered heat. The plant would operate continuously with low cost storage and it is a good potential solar thermochemical hydrogen production cycle for reaching the DOE cost goals. Two approaches were considered for the hydrogen production step of the SA cycle: (1) photocatalytic, and (2) electrolytic oxidation of ammonium sulfite to ammonium sulfate in aqueous solutions. Also, two sub-cycles were evaluated for the oxygen evolution side of the SA cycle: (1) zinc sulfate/zinc oxide, and (2) potassium sulfate/potassium pyrosulfate. The laboratory testing and optimization of all the process steps for each version of the SA cycle were proven in the laboratory or have been fully demonstrated by others, but further optimization is still possible and needed. The solar configuration evolved to a 50 MW(thermal) central receiver system with a North heliostat field, a cavity receiver, and NaCl molten salt storage to allow continuous operation. The H2A economic model was used to optimize and trade-off SA cycle configurations. Parametric studies of chemical plant performance have indicated process efficiencies of ~20%. Although the current process efficiency is technically acceptable, an increased efficiency is needed if the DOE cost targets are to be reached. There are two interrelated areas in which there is the potential for significant efficiency improvements: electrolysis cell voltage and excessive water vaporization. Methods to significantly reduce water evaporation are proposed for future activities. Electrolysis membranes that permit higher temperatures and lower voltages are attainable. The oxygen half cycle will need further development and improvement.

  18. 17November 2010 Global Energy and Water Cycle Experiment

    E-Print Network [OSTI]

    observations, and remote sensing in the context of sus- tainability science. As a true test bed for community17November 2010 Global Energy and Water Cycle Experiment Meeting/Workshop Reports HESSS2 of society and the services of the hydrology community. In par- ticular, the estimation and reduction

  19. MODELLING RADIATIVELY ACTIVE WATER-ICE CLOUDS: IMPACT ON THE THERMAL STRUCTURE AND WATER CYCLE.

    E-Print Network [OSTI]

    Madeleine, Jean-Baptiste

    MODELLING RADIATIVELY ACTIVE WATER-ICE CLOUDS: IMPACT ON THE THERMAL STRUCTURE AND WATER CYCLE. J. The essential role of water-ice clouds in shaping the thermal structure of the martian atmosphere has been long presumed [1] but neglected in GCMs because of the lack of observations and difficulty to predict

  20. Multivariate Non-stationary Stochastic Streamflow Models for Two Urban , R. Vogel2

    E-Print Network [OSTI]

    Vogel, Richard M.

    as changes in the water use cycle. Urbanization leads to construction of water distribution systems and storm1 Multivariate Non-stationary Stochastic Streamflow Models for Two Urban Watersheds M. Ng1 , R: urbanization and changes in climate and water use are examples of such influences. The evolution

  1. The Pipe vs. The Shed: Waste Water compared with Natural Hydrology in an Urban Setting

    E-Print Network [OSTI]

    Lather, Alaska; Wozniak, Monika

    2011-01-01T23:59:59.000Z

    Water compared with Natural Hydrology in an Urban Setting Bypaper was to compare the hydrology of the East Bay Municipala stream and watershed hydrology. Using stream flow data for

  2. Water Vapor and Mechanical Work: A Comparison of Carnot and Steam Cycles OLIVIER PAULUIS

    E-Print Network [OSTI]

    Pauluis, Olivier M.

    Water Vapor and Mechanical Work: A Comparison of Carnot and Steam Cycles OLIVIER PAULUIS Center in the atmosphere is discussed here by comparing two idealized heat engines: the Carnot cycle and the steam cycle. A steam cycle transports water from a warm moist source to a colder dryer sink. It acts as a heat engine

  3. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    Cycle Water Consumption for WECC NERC Region ElectricityCycle Water Withdrawals for WECC NERC Region ElectricityTRE TS&D USDA USGS VC W WECC WSI International Organization

  4. WATER USE IN LCA Life cycle consumptive water use for oil shale development

    E-Print Network [OSTI]

    Jaramillo, Paulina

    WATER USE IN LCA Life cycle consumptive water use for oil shale development and implications Heidelberg 2013 Abstract Purpose Oil shale is an unconventional petroleum source that can be produced domestically in the USA. Oil shale resources are primarily located in Utah, Wyoming, and Colorado, within

  5. Estimating Water Quality Pollution Impacts Based on Economic Loss Models in Urbanization Process

    E-Print Network [OSTI]

    Yu, Qian

    . Research has targeted the assessment toward economic loss evaluation Grossman and Alan 1995; Ofiara 2001Estimating Water Quality Pollution Impacts Based on Economic Loss Models in Urbanization Process and spatial characteristics of different water quality parameters, and simulating economic loss of water

  6. Supercritical Water Reactor Cycle for Medium Power Applications

    SciTech Connect (OSTI)

    BD Middleton; J Buongiorno

    2007-04-25T23:59:59.000Z

    Scoping studies for a power conversion system based on a direct-cycle supercritical water reactor have been conducted. The electric power range of interest is 5-30 MWe with a design point of 20 MWe. The overall design objective is to develop a system that has minimized physical size and performs satisfactorily over a broad range of operating conditions. The design constraints are as follows: Net cycle thermal efficiency {ge}20%; Steam turbine outlet quality {ge}90%; and Pumping power {le}2500 kW (at nominal conditions). Three basic cycle configurations were analyzed. Listed in order of increased plant complexity, they are: (1) Simple supercritical Rankine cycle; (2) All-supercritical Brayton cycle; and (3) Supercritical Rankine cycle with feedwater preheating. The sensitivity of these three configurations to various parameters, such as reactor exit temperature, reactor pressure, condenser pressure, etc., was assessed. The Thermoflex software package was used for this task. The results are as follows: (a) The simple supercritical Rankine cycle offers the greatest hardware simplification, but its high reactor temperature rise and reactor outlet temperature may pose serious problems from the viewpoint of thermal stresses, stability and materials in the core. (b) The all-supercritical Brayton cycle is not a contender, due to its poor thermal efficiency. (c) The supercritical Rankine cycle with feedwater preheating affords acceptable thermal efficiency with lower reactor temperature rise and outlet temperature. (d) The use of a moisture separator improves the performance of the supercritical Rankine cycle with feedwater preheating and allows for a further reduction of the reactor outlet temperature, thus it was selected for the next step. Preliminary engineering design of the supercritical Rankine cycle with feedwater preheating and moisture separation was performed. All major components including the turbine, feedwater heater, feedwater pump, condenser, condenser pump and pipes were modeled with realistic assumptions using the PEACE module of Thermoflex. A three-dimensional layout of the plant was also generated with the SolidEdge software. The results of the engineering design are as follows: (i) The cycle achieves a net thermal efficiency of 24.13% with 350/460 C reactor inlet/outlet temperatures, {approx}250 bar reactor pressure and 0.75 bar condenser pressure. The steam quality at the turbine outlet is 90% and the total electric consumption of the pumps is about 2500 kWe at nominal conditions. (ii) The overall size of the plant is attractively compact and can be further reduced if a printed-circuit-heat-exchanger (vs shell-and-tube) design is used for the feedwater heater, which is currently the largest component by far. Finally, an analysis of the plant performance at off-nominal conditions has revealed good robustness of the design in handling large changes of thermal power and seawater temperature.

  7. 8th World Wide Workshop for Young Environmental Scientists WWW-YES 2009: Urban waters: resource or risks? 2-5 June 2009

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    that cross the urban-rural divide. Also, an easy-to use model can support decision making at the local urban water planning and policy level. This paper describes ongoing research on the urban water system8th World Wide Workshop for Young Environmental Scientists WWW-YES 2009: Urban waters: resource

  8. ARM - Field Campaign - Water Cycle Pilot Study Intensive Observations

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa- PolarizationgovCampaignsSummer Single ColumngovCampaignsWater Cycle Pilot Study

  9. Chapter 13 Water Resources Hoover Dam

    E-Print Network [OSTI]

    Pan, Feifei

    management Water shortage linked to food supply Learning Objectives #12; The global water cycleChapter 13 Water Resources #12;Hoover Dam #12;The Colorado River Basin Population growth Urbanization Climate change #12; Water cycle Water use Surface water and groundwater processes Water

  10. Balancing Energy and Water Consumption in an Urban Desert Environment: A Case

    E-Print Network [OSTI]

    Hall, Sharon J.

    at the Census block group level for 2005 3. Energy consumption data from 2005 Census Mesic Landscaping XericBalancing Energy and Water Consumption in an Urban Desert Environment: A Case Study on Phoenix, AZ effect, water scarcity, and energy consumption. The transformation of native landscapes into built

  11. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    SciTech Connect (OSTI)

    Lu, Alison; McMahon, James; Masanet, Eric; Lutz, Jim

    2008-08-13T23:59:59.000Z

    Residential water heating is a large source of energy use in California homes. This project took a life cycle approach to comparing tank and tankless water heaters in Northern and Southern California. Information about the life cycle phases was calculated using the European Union?s Methodology study for EcoDesign of Energy-using Products (MEEUP) and the National Renewable Energy Laboratory?s Life Cycle Inventory (NREL LCI) database. In a unit-to-unit comparison, it was found that tankless water heaters would lessen impacts of water heating by reducing annual energy use by 2800 MJ/year (16% compared to tank), and reducing global warming emissions by 175 kg CO2 eqv./year (18% reduction). Overall, the production and combustion of natural gas in the use phase had the largest impact. Total waste, VOCs, PAHs, particulate matter, and heavy-metals-to-air categories were also affected relatively strongly by manufacturing processes. It was estimated that tankless water heater users would have to use 10 more gallons of hot water a day (an increased usage of approximately 20%) to have the same impact as tank water heaters. The project results suggest that if a higher percentage of Californians used tankless water heaters, environmental impacts caused by water heating would be smaller.

  12. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    Water Reuse, Part I. Oil & Gas Journal 1992, 90 (38), 86,Journal of Life Cycle Assessment 1997, 2 (4), 217-222. Profile of the Oil and Gas

  13. Climate Change Assessment for Urban Water Resource Availability

    E-Print Network [OSTI]

    Martinez, Ramiro

    2011-08-08T23:59:59.000Z

    change will influence in the availability of local water resource systems. Water resources are especially vulnerable to dramatic changes in temperature and precipitation, and significant impacts may be experienced by both human and ecosystems...

  14. Water Supply Challenges in Cities as a Result of Urbanization: Analyzing the Hurdles of Achieving Universal Water Access in Kampala

    E-Print Network [OSTI]

    Felter, Greg

    2014-07-09T23:59:59.000Z

    is inevitable and therefore planning for such settlement should be undertaken by the government (Parikh and Parikh, 2009). 3.5. Environmental Impacts The pollution of Lake Victoria is a significant issue. Sanitation facilities lag behind potable water access... and Constraints of Sustainable Water Management in Oaxaca City, Mexico. Master of Philosophy. University of Cambridge. 14 SDI. 2011. Transforming the Settlements of the Urban Poor in Uganda. [report] Kampala: Slum Dwellers International, pp. 1-4. Ssemmanda...

  15. International Symposium on New Directions in Urban Water Management 12-14 September 2007, UNESCO Paris

    E-Print Network [OSTI]

    Boyer, Edmond

    periods. Combined systems are equipped with CSOs' devices to avoid overflows on streets or house basement to reach and maintain a good ecological status (EU, Directive 2000). For highly modified water masses like in urban and periurban areas, the objective of a maximal ecological potential must be defined and reached

  16. The Use of Water Vapor as a Refrigerant: Impact of Cycle Modifications on Commercial Viability

    SciTech Connect (OSTI)

    Brandon F. Lachner, Jr.; Gregory F. Nellis; Douglas T. Reindl

    2004-08-30T23:59:59.000Z

    This project investigated the economic viability of using water as the refrigerant in a 1000-ton chiller application. The most attractive water cycle configuration was found to be a flash-intercooled, two-stage cycle using centrifugal compressors and direct contact heat exchangers. Component level models were developed that could be used to predict the size and performance of the compressors and heat exchangers in this cycle as well as in a baseline, R-134a refrigeration cycle consistent with chillers in use today. A survey of several chiller manufacturers provided information that was used to validate and refine these component models. The component models were integrated into cycle models that were subsequently used to investigate the life-cycle costs of both an R-134a and water refrigeration cycle. It was found that the first cost associated with the water as a refrigerant cycle greatly exceeded the savings in operating costs associated with its somewhat higher COP. Therefore, the water refrigeration cycle is not an economically attractive option to today's R-134a refrigeration system. There are a number of other issues, most notably the requirements associated with purging non-condensable gases that accumulate in a direct contact heat exchanger, which will further reduce the economic viability of the water cycle.

  17. Alternative water sources: Desalination model provides life-cycle costs of facility

    E-Print Network [OSTI]

    Supercinski, Danielle

    2009-01-01T23:59:59.000Z

    Story by Danielle Supercinski tx H2O | pg. 8 Alternative water sourcees Desalination model provides life-cycle costs of facility platform and design standards as DESAL ECONOMICS?, but created to analyze con- ventional surface water treatment... to determine the economic and financial life-cycle costs of building and operating four water treatment facilities in South Texas. One facility was the Southmost Regional Water Authority Regional Desalination Plant near Brownsville. Sturdi- vant said...

  18. Alternative water sources: Desalination model provides life-cycle costs of facility 

    E-Print Network [OSTI]

    Supercinski, Danielle

    2009-01-01T23:59:59.000Z

    Story by Danielle Supercinski tx H2O | pg. 8 Alternative water sourcees Desalination model provides life-cycle costs of facility platform and design standards as DESAL ECONOMICS?, but created to analyze con- ventional surface water treatment... to determine the economic and financial life-cycle costs of building and operating four water treatment facilities in South Texas. One facility was the Southmost Regional Water Authority Regional Desalination Plant near Brownsville. Sturdi- vant said...

  19. Valuing the Environmental Benefits of Urban Water Conservation

    E-Print Network [OSTI]

    Coughlin, Katie M.; Bolduc, Chris A.; Chan, Peter T.; Dunham-Whitehead, C.; Van Buskirk, R.D.

    2008-01-01T23:59:59.000Z

    default ecological impact and environmental value estimates.Bass stream/river environmental impact factors by HR. . .Water Savings . 4.3 Environmental Impacts 4.4 Environmental

  20. Site design for urban water management in Mexico City

    E-Print Network [OSTI]

    Rivera, José Pablo (Rivera De la Mora), 1967-

    2001-01-01T23:59:59.000Z

    As the world becomes aware of the scarcity of water resources and cities struggle to meet a growing demand, we face the challenge of finding more efficient ways to manage this vital resource. Cities in developing countries ...

  1. Global Climate Modeling of the Martian water cycle with improved microphysics and radiatively active water ice clouds

    E-Print Network [OSTI]

    Navarro, Thomas; Forget, François; Spiga, Aymeric; Millour, Ehouarn; Montmessin, Franck

    2013-01-01T23:59:59.000Z

    Radiative effects of water ice clouds have noteworthy consequences on the Martian atmosphere, its thermal structure and circulation. Accordingly, the inclusion of such effects in the LMD Mars Global Climate Model (GCM) greatly modifies the simulated Martian water cycle. The intent of this paper is to address the impact of radiatively active clouds on atmospheric water vapor and ice in the GCM and improve its representation. We propose a new enhanced modeling of the water cycle, consisting of detailed cloud microphysics with dynamic condensation nuclei and a better implementation of perennial surface water ice. This physical modeling is based on tunable parameters. This new version of the GCM is compared to the Thermal Emission Spectrometer observations of the water cycle. Satisfying results are reached for both vapor and cloud opacities. However, simulations yield a lack of water vapor in the tropics after Ls=180{\\deg} which is persistent in simulations compared to observations, as a consequence of aphelion c...

  2. atmospheric water cycle: Topics by E-print Network

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

    Geosciences Websites Summary: is decided. Three orbital cycles combine to modulate the North- ern Hemisphere solar heating. The axisWHAT CAUSED THE GLACIALINTERGLACIAL...

  3. Positioning the performance of public service. When management tools are in conflict : the case of urban water management

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the conflict between new and existing performance management tools in a large urban public service3 . We usePositioning the performance of public service. When management tools are in conflict : the case of urban water management Marie Tsanga Tabi, U.M.R Cemagref-ENGEES "Management of Public Services", 1 quai

  4. Drops of Energy Conserving Urban Water in California

    E-Print Network [OSTI]

    Kammen, Daniel M.

    , and unpredictable water supplies. In addition, rising sea levels from global warming and glacial melting threaten like to thank Anne Finucane, Global Chief Strategy and Marketing Officer, and Chair of the Bank percent of the state's electricity, 30 percent of its non-power plant natural gas, and 88 million gallons

  5. Amending constructed roadside and urban soils with large volume-based compost applications: effects on water quality 

    E-Print Network [OSTI]

    Hansen, Nels Edward

    2007-04-25T23:59:59.000Z

    Mineral nutrients imported in composted dairy manure (CDM) and municipal biosolid (CMB) amendments for highway-rights-of-way and urban landscapes can pose a threat to surface water quality. Treatments were developed to evaluate recommendations...

  6. Comparative urban drive cycle simulations of light-duty hybrid vehicles with gasoline or diesel engines and emissions controls

    SciTech Connect (OSTI)

    Gao, Zhiming [ORNL] [ORNL; Daw, C Stuart [ORNL] [ORNL; Smith, David E [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    Electric hybridization is a very effective approach for reducing fuel consumption in light-duty vehicles. Lean combustion engines (including diesels) have also been shown to be significantly more fuel efficient than stoichiometric gasoline engines. Ideally, the combination of these two technologies would result in even more fuel efficient vehicles. However, one major barrier to achieving this goal is the implementation of lean-exhaust aftertreatment that can meet increasingly stringent emissions regulations without heavily penalizing fuel efficiency. We summarize results from comparative simulations of hybrid electric vehicles with either stoichiometric gasoline or diesel engines that include state-of-the-art aftertreatment emissions controls for both stoichiometric and lean exhaust. Fuel consumption and emissions for comparable gasoline and diesel light-duty hybrid electric vehicles were compared over a standard urban drive cycle and potential benefits for utilizing diesel hybrids were identified. Technical barriers and opportunities for improving the efficiency of diesel hybrids were identified.

  7. Energetic performance optimization of a capacitive deionization system operating with transient cycles and brackish water

    E-Print Network [OSTI]

    Hidrovo, Carlos H.

    face economic water shortage [4], meaning that effective steps have to be taken, in terms of increasing cycles and brackish water Onur N. Demirer, Rachel M. Naylor, Carlos A. Rios Perez, Ellen Wilkes, Carlos analysis Water desalination using capacitive deionization (CDI) has been a recent topic of intense research

  8. RAINWATER HARVESTING, ALTERNATIVE TO THE WATER SUPPLY IN INDIAN URBAN AREAS: THE CASE OF AHMEDABAD IN GUJARAT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    RAINWATER HARVESTING, ALTERNATIVE TO THE WATER SUPPLY IN INDIAN URBAN AREAS: THE CASE OF AHMEDABAD for complementarities between the present system of water supply and the alternative system of rainwater harvesting IN GUJARAT (Akil AMIRALY1 , Nathalie PRIME2 , Joginder P. SINGH3 ) ABSTRACT Water scarcity

  9. RAINWATER HARVESTING, ALTERNATIVE TO THE WATER SUPPLY IN INDIAN URBAN AREAS: THE CASE OF AHMEDABAD IN GUJARAT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    RAINWATER HARVESTING, ALTERNATIVE TO THE WATER SUPPLY IN INDIAN URBAN AREAS: THE CASE OF AHMEDABAD their water requirements. Rainwater harvesting is one of them. It was functioning in the Old city of Ahmedabad and the alternative system of rainwater harvesting, in a context of water scarcity. The objective of the research

  10. Plumbing the Global Carbon Cycle: Integrating Inland Waters into the

    E-Print Network [OSTI]

    Berkowitz, Alan R.

    ´bec a` Montre´al, Station Centre-Ville, P.O. Box 8888Montreal, H3C 3P8, Canada; 3 Department of Natural and Evolution, Evolutionary Biology Centre, Uppsala University, Norbyv. 20, 75 236 Uppsala, Sweden; 5 United components of the carbon cycle at either global or regional scales. By taking published estimates of gas

  11. ammonia-water absorption cycle: Topics by E-print Network

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

    ammonia-water absorption cycle First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 AN AMMONIA-WATER...

  12. Tracking Non-point Fecal Pollution in the Guadalupe River: Distinguishing Urban and Rural Influences upon Water Quality

    E-Print Network [OSTI]

    , Assistant Professor University of Houston - Victoria Non-point fecal pollution is a problem in water bodiesTracking Non-point Fecal Pollution in the Guadalupe River: Distinguishing Urban and Rural Influences upon Water Quality Matthew Boyett University of Houston - Victoria boyettmr@uhv.edu Dmitri Sobolev

  13. Humans Altering the Water Cycle GTN-Hydrology Meeting

    E-Print Network [OSTI]

    Columbia University

    Infrastructure in South America (IIRSA) · Purpose: Regional integration; launched in 2000 · EIA: More than 360 resources management (IWRM) ­ mostly tested at catchment level · >400 water sharing agreements (see http://www.transboundarywaters.orst.edu/database

  14. Life cycle assessment of buildings technologies: High-efficiency commercial lighting and residential water heaters

    SciTech Connect (OSTI)

    Freeman, S.L.

    1997-01-01T23:59:59.000Z

    In this study the life cycle emissions and energy use are estimated for two types of energy technologies. The first technology evaluated is the sulfur lamp, a high-efficiency lighting system under development by the US Department of Energy (DOE) and Fusion Lighting, the inventor of the technology. The sulfur lamp is compared with conventional metal halide high-intensity discharge lighting systems. The second technology comparison is between standard-efficiency and high-efficiency gas and electric water heaters. In both cases the life cycle energy use and emissions are presented for the production of an equivalent level of service by each of the technologies. For both analyses, the energy use and emissions from the operation of the equipment are found to dominate the life cycle profile. The life cycle emissions for the water heating systems are much more complicated. The four systems compared include standard- and high-efficiency gas water heaters, standard electric resistance water heaters, and heat pump water heaters.

  15. 9th World Wide Workshop for Young Environmental Scientists WWW-YES-Brazil-2009: Urban waters: resource or risks? 26-30 October 2009

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . INTRODUCTION Problem The landfilling is an attractive method for the municipal solid waste management due9th World Wide Workshop for Young Environmental Scientists WWW-YES-Brazil-2009: Urban waters problems of the urban water management in developing countries C. Madera* and Viviana Valencia

  16. 9th World Wide Workshop for Young Environmental Scientists WWW-YES-Brazil-2009: Urban waters: resource or risks? 26-30 October 2009

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    director plans. Keywords Management; decision support systems; sustainable development; geopolitics; social9th World Wide Workshop for Young Environmental Scientists WWW-YES-Brazil-2009: Urban waters: resource or risks? 26-30 October 2009 Brazilian Regulatory Process: including groundwater in urban water

  17. Advanced Fuel Cycle Economic Analysis of Symbiotic Light-Water Reactor and Fast Burner Reactor Systems

    SciTech Connect (OSTI)

    D. E. Shropshire

    2009-01-01T23:59:59.000Z

    The Advanced Fuel Cycle Economic Analysis of Symbiotic Light-Water Reactor and Fast Burner Reactor Systems, prepared to support the U.S. Advanced Fuel Cycle Initiative (AFCI) systems analysis, provides a technology-oriented baseline system cost comparison between the open fuel cycle and closed fuel cycle systems. The intent is to understand their overall cost trends, cost sensitivities, and trade-offs. This analysis also improves the AFCI Program’s understanding of the cost drivers that will determine nuclear power’s cost competitiveness vis-a-vis other baseload generation systems. The common reactor-related costs consist of capital, operating, and decontamination and decommissioning costs. Fuel cycle costs include front-end (pre-irradiation) and back-end (post-iradiation) costs, as well as costs specifically associated with fuel recycling. This analysis reveals that there are large cost uncertainties associated with all the fuel cycle strategies, and that overall systems (reactor plus fuel cycle) using a closed fuel cycle are about 10% more expensive in terms of electricity generation cost than open cycle systems. The study concludes that further U.S. and joint international-based design studies are needed to reduce the cost uncertainties with respect to fast reactor, fuel separation and fabrication, and waste disposition. The results of this work can help provide insight to the cost-related factors and conditions needed to keep nuclear energy (including closed fuel cycles) economically competitive in the U.S. and worldwide. These results may be updated over time based on new cost information, revised assumptions, and feedback received from additional reviews.

  18. Modeling Potential Equilibrium States of Vegetation and Terrestrial Water Cycle of Mesoamerica under Climate Change Scenarios*

    E-Print Network [OSTI]

    Boyer, Edmond

    precipitation, the impacts of climate change on vegetation and water cycle are predicted with relatively low under Climate Change Scenarios* PABLO IMBACH,1 LUIS MOLINA,1 BRUNO LOCATELLI,# OLIVIER ROUPSARD,1,@ GIL MAHE´ ,& RONALD NEILSON,**,&& LENIN CORRALES,11 MARKO SCHOLZE,## AND PHILIPPE CIAIS @@ 1 Climate Change

  19. Hydrological consistency using multi-sensor remote sensing data for water and energy cycle studies

    E-Print Network [OSTI]

    Pan, Ming

    Hydrological consistency using multi-sensor remote sensing data for water and energy cycle studies and feedback of land surface and atmospheric processes over large space and time scales. Remote sensing-based variables including soil moisture (from AMSR-E), surface heat fluxes (from MODIS) and precipitation rates

  20. 8th World Wide Workshop for Young Environmental Scientists WWW-YES-2008: Urban waters: resource or risks? 13-16 May 2008

    E-Print Network [OSTI]

    Boyer, Edmond

    consequence of water lack is unhealthy. Water-borne diseases caused by pathogen agents appear in this city so endemic. Keywords lack, pathogens, quality, water borne disease, water supply, well INTRODUCTION8th World Wide Workshop for Young Environmental Scientists WWW-YES-2008: Urban waters: resource

  1. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    Diagram 1: A Typical Tank Water Heater Source: http://California households. Tank water heaters stayed constant.the same impact as tank water heaters. The project results

  2. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    Study on Eco-Design of Water Heaters, Van Holstein en Kemnaand Assessment” in Water Heating Rulemaking TechnicalG. Smith, Tankless Gas Water Heaters: Oregon Market Status,

  3. Urban Growth and Climate Change

    E-Print Network [OSTI]

    Kahn, Matthew E.

    2008-01-01T23:59:59.000Z

    air pollution or urban water pollution, local and nationalbasic services of clean water and sanitation for a growing

  4. FeCycle: Attempting an iron biogeochemical budget from a mesoscale SF6 tracer experiment in unperturbed low iron waters

    E-Print Network [OSTI]

    Wilhelm, Steven W.

    FeCycle: Attempting an iron biogeochemical budget from a mesoscale SF6 tracer experiment to ocean physics. In summer 2003 we conducted FeCycle, a 10-day mesoscale tracer release in HNLC waters SE biogeochemical budget from a mesoscale SF6 tracer experiment in unperturbed low iron waters, Global Biogeochem

  5. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    Study on Eco-Design of Water Heaters, Van Holstein en Kemnaheater. Eco-design of Water Heaters and Methodology studyboth storage-type water heaters and tankless water heaters.

  6. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    for PAH emissions. The PAHs from tank water heaters in theIncreased Tankless Water Usage: PAHs Heavy Metals to WaterIncreased Tankless Water Usage: VOCs PAHs Heavy Metals to

  7. Determining Sources of Dissolved Organic Carbon and Nutrients in an Urban Basin Using Novel and Traditional Methods

    E-Print Network [OSTI]

    Govil, Krittika

    2014-01-03T23:59:59.000Z

    Water quality in urban ecosystems is sensitive to localized disturbances potentially affecting those mechanisms which influence nutrient cycles. The Carters Creek Basin has been reported to have elevated concentrations of dissolved organic carbon...

  8. A Novel Absorption Cycle for Combined Water Heating, Dehumidification, and Evaporative Cooling

    SciTech Connect (OSTI)

    CHUGH, Devesh [University of Florida, Gainesville; Gluesenkamp, Kyle R [ORNL; Abdelaziz, Omar [ORNL; Moghaddam, Saeed [University of Florida, Gainesville

    2014-01-01T23:59:59.000Z

    In this study, development of a novel system for combined water heating, dehumidification, and space evaporative cooling is discussed. Ambient water vapor is used as a working fluid in an open system. First, water vapor is absorbed from an air stream into an absorbent solution. The latent heat of absorption is transferred into the process water that cools the absorber. The solution is then regenerated in the desorber, where it is heated by a heating fluid. The water vapor generated in the desorber is condensed and its heat of phase change is transferred to the process water in the condenser. The condensed water can then be used in an evaporative cooling process to cool the dehumidified air exiting the absorber, or it can be drained if primarily dehumidification is desired. Essentially, this open absorption cycle collects space heat and transfers it to process water. This technology is enabled by a membrane-based absorption/desorption process in which the absorbent is constrained by hydrophobic vapor-permeable membranes. Constraining the absorbent film has enabled fabrication of the absorber and desorber in a plate-and-frame configuration. An air stream can flow against the membrane at high speed without entraining the absorbent, which is a challenge in conventional dehumidifiers. Furthermore, the absorption and desorption rates of an absorbent constrained by a membrane are greatly enhanced. Isfahani and Moghaddam (Int. J. Heat Mass Transfer, 2013) demonstrated absorption rates of up to 0.008 kg/m2s in a membrane-based absorber and Isfahani et al. (Int. J. Multiphase Flow, 2013) have reported a desorption rate of 0.01 kg/m2s in a membrane-based desorber. The membrane-based architecture also enables economical small-scale systems, novel cycle configurations, and high efficiencies. The absorber, solution heat exchanger, and desorber are fabricated on a single metal sheet. In addition to the open arrangement and membrane-based architecture, another novel feature of the cycle is recovery of the solution heat energy exiting the desorber by process water (a process-solution heat exchanger ) rather than the absorber exiting solution (the conventional solution heat exchanger ). This approach has enabled heating the process water from an inlet temperature of 15 C to 57 C (conforming to the DOE water heater test standard) and interfacing the process water with absorbent on the opposite side of a single metal sheet encompassing the absorber, process-solution heat exchanger, and desorber. The system under development has a 3.2 kW water heating capacity and a target thermal coefficient of performance (COP) of 1.6.

  9. Fuel-Cycle energy and emission impacts of ethanol-diesel blends in urban buses and farming tractors.

    SciTech Connect (OSTI)

    Wang, M.; Saricks, C.; Lee, H.

    2003-09-11T23:59:59.000Z

    About 2.1 billion gallons of fuel ethanol was used in the United States in 2002, mainly in the form of gasoline blends containing up to 10% ethanol (E10). Ethanol use has the potential to increase in the U.S. blended gasoline market because methyl tertiary butyl ether (MTBE), formerly the most popular oxygenate blendstock, may be phased out owing to concerns about MTBE contamination of the water supply. Ethanol would remain the only viable near-term option as an oxygenate in reformulated gasoline production and to meet a potential federal renewable fuels standard (RFS) for transportation fuels. Ethanol may also be blended with additives (co-solvents) into diesel fuels for applications in which oxygenation may improve diesel engine emission performance. Numerous studies have been conducted to evaluate the fuel-cycle energy and greenhouse gas (GHG) emission effects of ethanol-gasoline blends relative to those of gasoline for applications in spark-ignition engine vehicles (see Wang et al. 1997; Wang et al. 1999; Levelton Engineering et al. 1999; Shapouri et al. 2002; Graboski 2002). Those studies did not address the energy and emission effects of ethanol-diesel (E-diesel or ED) blends relative to those of petroleum diesel fuel in diesel engine vehicles. The energy and emission effects of E-diesel could be very different from those of ethanol-gasoline blends because (1) the energy use and emissions generated during diesel production (so-called ''upstream'' effects) are different from those generated during gasoline production; and (2) the energy and emission performance of E-diesel and petroleum diesel fuel in diesel compression-ignition engines differs from that of ethanol-gasoline blends in spark-ignition (Otto-cycle-type) engine vehicles. The Illinois Department of Commerce and Community Affairs (DCCA) commissioned Argonne National Laboratory to conduct a full fuel-cycle analysis of the energy and emission effects of E-diesel blends relative to those of petroleum diesel when used in the types of diesel engines that will likely be targeted first in the marketplace. This report documents the results of our study. The draft report was delivered to DCCA in January 2003. This final report incorporates revisions by the sponsor and by Argonne.

  10. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    Study on Eco-Design of Water Heaters, Van Holstein en Kemnaon Eco-Design of Water Heaters”, Task 5 Report, DefinitionTesting of Tankless Gas Water Heater Performance. Davis

  11. XENOWAC 2009 International Conference on Xenobiotics in the Urban Water Cycle

    E-Print Network [OSTI]

    Boyer, Edmond

    words: Tylosin; photocatalysis; titanium dioxide; immobilization; 1 Introduction The pollution of ground is photocatalysis, which has been tested on some antibiotics [1,2]. The photocatalyst is mainly a semiconductor of tylosin degradation by photocatalysis has been investigated in a lab-scale photocatalytic reactor (Fig.1

  12. Operation of hydrogen water chemistry for 18-month cycle at Dresden-2

    SciTech Connect (OSTI)

    Sundberg, L.L.; Cowan, R.L.; Huff, J.M.; Skarpelos, J.M.; Law, R.J.; Marble, W.J.; Peterson, J.P.; Nelson, W.B.; Nesbett, L.B.; Head, R.A.

    1986-03-01T23:59:59.000Z

    This document provides an interim report on the progress of Project RP1930-7, BWR Hydrogen Water Chemistry - Chemical Surveillance. It describes the work performed at Commonwealth Edison's Dresden Nuclear Power Station Unit 2 during its first full fuel cycle on Hydrogen Water Chemistry to monitor its chemical and radiological performance. It includes the results of gamma scan/dose rate campaigns, ion chromatography, and other extensive water chemistry measurements. Also reported are findings and recommendations regarding plant operational practices and offgas fires. This experience at Dresden-2 has demonstrated that a plant can operate on Hydrogen Water Chemistry with only minor impact on plant parameters, but with a major positive impact on intergranular stress corrosion cracking (IGSCC) mitigation for sensitized stainless steel components.

  13. 9th World Wide Workshop for Young Environmental Scientists WWW-YES-Brazil-2009: Urban waters: resource or risks? 26-30 October 2009

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    supply, sanitation and waste management facilities. Urban context of the Mingoa River watershed9th World Wide Workshop for Young Environmental Scientists WWW-YES-Brazil-2009: Urban waters on the Municipal Lake of Yaoundé, Cameroon Marielle Naah* *Laboratoire Eau Environnement et Systèmes Urbains (LEESU

  14. Development of a Water Based, Critical Flow, Non-Vapor Compression cooling Cycle

    SciTech Connect (OSTI)

    Hosni, Mohammad H.

    2014-03-30T23:59:59.000Z

    Expansion of a high-pressure liquid refrigerant through the use of a thermostatic expansion valve or other device is commonplace in vapor-compression cycles to regulate the quality and flow rate of the refrigerant entering the evaporator. In vapor-compression systems, as the condensed refrigerant undergoes this expansion, its pressure and temperature drop, and part of the liquid evaporates. We (researchers at Kansas State University) are developing a cooling cycle that instead pumps a high-pressure refrigerant through a supersonic converging-diverging nozzle. As the liquid refrigerant passes through the nozzle, its velocity reaches supersonic (or critical-flow) conditions, substantially decreasing the refrigerant’s pressure. This sharp pressure change vaporizes some of the refrigerant and absorbs heat from the surrounding conditions during this phase change. Due to the design of the nozzle, a shockwave trips the supersonic two-phase refrigerant back to the starting conditions, condensing the remaining vapor. The critical-flow refrigeration cycle would provide space cooling, similar to a chiller, by running a secondary fluid such as water or glycol over one or more nozzles. Rather than utilizing a compressor to raise the pressure of the refrigerant, as in a vapor-cycle system, the critical-flow cycle utilizes a high-pressure pump to drive refrigerant liquid through the cooling cycle. Additionally, the design of the nozzle can be tailored for a given refrigerant, such that environmentally benign substances can act as the working fluid. This refrigeration cycle is still in early-stage development with prototype development several years away. The complex multi-phase flow at supersonic conditions presents numerous challenges to fully understanding and modeling the cycle. With the support of DOE and venture-capital investors, initial research was conducted at PAX Streamline, and later, at Caitin. We (researchers at Kansas State University) have continued development of the cycle and have gained an in-depth understanding of the governing fundamental knowledge, based on the laws of physics and thermodynamics and verified with our testing results. Through this research, we are identifying optimal working fluid and operating conditions to eventually demonstrate the core technology for space cooling or other applications.

  15. Life Cycle Water Consumption and Water Resource Assessment for Utility-Scale Geothermal Systems: An In-Depth Analysis of Historical and Forthcoming EGS Projects

    SciTech Connect (OSTI)

    Schroeder, Jenna N.

    2013-08-31T23:59:59.000Z

    This report is the third in a series of reports sponsored by the U.S. Department of Energy Geothermal Technologies Program in which a range of water-related issues surrounding geothermal power production are evaluated. The first report made an initial attempt at quantifying the life cycle fresh water requirements of geothermal power-generating systems and explored operational and environmental concerns related to the geochemical composition of geothermal fluids. The initial analysis of life cycle fresh water consumption of geothermal power-generating systems identified that operational water requirements consumed the vast majority of water across the life cycle. However, it relied upon limited operational water consumption data and did not account for belowground operational losses for enhanced geothermal systems (EGSs). A second report presented an initial assessment of fresh water demand for future growth in utility-scale geothermal power generation. The current analysis builds upon this work to improve life cycle fresh water consumption estimates and incorporates regional water availability into the resource assessment to improve the identification of areas where future growth in geothermal electricity generation may encounter water challenges.

  16. Life Cycle Water Consumption and Water Resource Assessment for Utility-Scale Geothermal Systems: An In-Depth Analysis of Historical and Forthcoming EGS Projects

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Schroeder, Jenna N.

    This report is the third in a series of reports sponsored by the U.S. Department of Energy Geothermal Technologies Program in which a range of water-related issues surrounding geothermal power production are evaluated. The first report made an initial attempt at quantifying the life cycle fresh water requirements of geothermal power-generating systems and explored operational and environmental concerns related to the geochemical composition of geothermal fluids. The initial analysis of life cycle fresh water consumption of geothermal power-generating systems identified that operational water requirements consumed the vast majority of water across the life cycle. However, it relied upon limited operational water consumption data and did not account for belowground operational losses for enhanced geothermal systems (EGSs). A second report presented an initial assessment of fresh water demand for future growth in utility-scale geothermal power generation. The current analysis builds upon this work to improve life cycle fresh water consumption estimates and incorporates regional water availability into the resource assessment to improve the identification of areas where future growth in geothermal electricity generation may encounter water challenges.

  17. Life Cycle Water Consumption and Water Resource Assessment for Utility-Scale Geothermal Systems: An In-Depth Analysis of Historical and Forthcoming EGS Projects

    SciTech Connect (OSTI)

    Clark, Corrie E. [Environmental Science Division] [Environmental Science Division; Harto, Christopher B. [Environmental Science Division] [Environmental Science Division; Schroeder, Jenna N. [Environmental Science Division] [Environmental Science Division; Martino, Louis E. [Environmental Science Division] [Environmental Science Division; Horner, Robert M. [Environmental Science Division] [Environmental Science Division

    2013-11-05T23:59:59.000Z

    This report is the third in a series of reports sponsored by the U.S. Department of Energy Geothermal Technologies Program in which a range of water-related issues surrounding geothermal power production are evaluated. The first report made an initial attempt at quantifying the life cycle fresh water requirements of geothermal power-generating systems and explored operational and environmental concerns related to the geochemical composition of geothermal fluids. The initial analysis of life cycle fresh water consumption of geothermal power-generating systems identified that operational water requirements consumed the vast majority of water across the life cycle. However, it relied upon limited operational water consumption data and did not account for belowground operational losses for enhanced geothermal systems (EGSs). A second report presented an initial assessment of fresh water demand for future growth in utility-scale geothermal power generation. The current analysis builds upon this work to improve life cycle fresh water consumption estimates and incorporates regional water availability into the resource assessment to improve the identification of areas where future growth in geothermal electricity generation may encounter water challenges. This report is divided into nine chapters. Chapter 1 gives the background of the project and its purpose, which is to assess the water consumption of geothermal technologies and identify areas where water availability may present a challenge to utility-scale geothermal development. Water consumption refers to the water that is withdrawn from a resource such as a river, lake, or nongeothermal aquifer that is not returned to that resource. The geothermal electricity generation technologies evaluated in this study include conventional hydrothermal flash and binary systems, as well as EGSs that rely on engineering a productive reservoir where heat exists, but where water availability or permeability may be limited. Chapter 2 describes the approach and methods for this work and identifies the four power plant scenarios evaluated: a 20-MW EGS binary plant, a 50-MW EGS binary plant, a 10-MW hydrothermal binary plant, and a 50-MW hydrothermal flash plant. The methods focus on (1) the collection of data to improve estimation of EGS stimulation volumes, aboveground operational consumption for all geothermal technologies, and belowground operational consumption for EGS; and (2) the mapping of the geothermal and water resources of the western United States to assist in the identification of potential water challenges to geothermal growth. Chapters 3 and 4 present the water requirements for the power plant life cycle. Chapter 3 presents the results of the current data collection effort, and Chapter 4 presents the normalized volume of fresh water consumed at each life cycle stage per lifetime energy output for the power plant scenarios evaluated. Over the life cycle of a geothermal power plant, from construction through 30 years of operation, the majority of water is consumed by plant operations. For the EGS binary scenarios, where dry cooling was assumed, belowground operational water loss is the greatest contributor depending upon the physical and operational conditions of the reservoir. Total life cycle water consumption requirements for air-cooled EGS binary scenarios vary between 0.22 and 1.85 gal/kWh, depending upon the extent of belowground operational water consumption. The air-cooled hydrothermal binary and flash plants experience far less fresh water consumption over the life cycle, at 0.04 gal/kWh. Fresh water requirements associated with air- cooled binary operations are primarily from aboveground water needs, including dust control, maintenance, and domestic use. Although wet-cooled hydrothermal flash systems require water for cooling, these plants generally rely upon the geofluid, fluid from the geothermal reservoir, which typically has high salinity and total dissolved solids concentration and is much warmer than normal groundwater sources, for their cooling water needs; thus,

  18. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    consumer/your_home/water_ heating/index.cfm/mytopic=12980heating is a large source of energy use in California homes.heating is the third largest source of energy use in homes [

  19. ECONOMIC LOSSES FOR URBAN WATER SCARCITY IN Marion W. Jenkins1

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    water supplies or as economic performance indicators for regional or local water supply reliability or increase water supplies. Introduction Relatively high population growth and increasing competition

  20. Adapting urban water systems to a changing climate: Lessons from the millennium drought in southeast Australia

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    city vulnerable to water shortages during periods of very5 To bu?er against water shortages, Melbourne recentlyhas shown that a severe water shortage can drive behavior

  1. Optimal Response to Periodic Shortage: Engineering/Economic Analysis for a Large Urban Water District

    E-Print Network [OSTI]

    Fisher, Anthony C.; Fullerton, David; Hatch, Nile; Reinelt, Peter

    1992-01-01T23:59:59.000Z

    The total supply shortages and water supply accomplishmentsThe total supply shortage and water supply accomplishmentsTotal supply shortage Total water supply accomplishments

  2. Carbon and Water Resource Management for Water Distribution Systems

    E-Print Network [OSTI]

    Hendrickson, Thomas Peter

    2013-01-01T23:59:59.000Z

    4 April, 2013. (4) 2010 Water Use Survey Summary Estimates –State Totals; Texas Water Development Board: Austin, TX,indicators for urban water systems. Urban Water. 2004, 4,

  3. How the Drudgery of Getting Water Shapes Women's Lives in Low-income Urban Communities

    E-Print Network [OSTI]

    Crow, Ben D; McPike, Jamie

    2009-01-01T23:59:59.000Z

    supply practices: rainwater harvesting, water theft, gifts/to water, in this case from roof rainwater harvesting tanks.

  4. This article has been published in: Urban Water Journal, Vol. 9(1), 2012 Rainwater harvesting to control stormwater runoff in suburban areas.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to store and/or to infiltrate it. These devices, widely known as Best Management Practices (BMP;2 storm events, they fill up and store part of the rainfall. This water is definitely abstracted from1 This article has been published in: Urban Water Journal, Vol. 9(1), 2012 Rainwater harvesting

  5. Stormwater and Urban Water Systems Modeling Proceedings, Monograph 14. (edited by W. James, K.N. Irvine, E.A. McBean, and R.E. Pitt). CHI. Guelph, Ontario, pp. 287

    E-Print Network [OSTI]

    Pitt, Robert E.

    Stormwater and Urban Water Systems Modeling Proceedings, Monograph 14. (edited by W. James, K have higher concentrations of PAHs (polycyclic aromatic hydrocarbons) due to the frequency and numbers

  6. Land and Water Use, CO2 Emissions, and Worker Radiological Exposure Factors for the Nuclear Fuel Cycle

    SciTech Connect (OSTI)

    Brett W Carlsen; Brent W Dixon; Urairisa Pathanapirom; Eric Schneider; Bethany L. Smith; Timothy M. AUlt; Allen G. Croff; Steven L. Krahn

    2013-08-01T23:59:59.000Z

    The Department of Energy Office of Nuclear Energy’s Fuel Cycle Technologies program is preparing to evaluate several proposed nuclear fuel cycle options to help guide and prioritize Fuel Cycle Technology research and development. Metrics are being developed to assess performance against nine evaluation criteria that will be used to assess relevant impacts resulting from all phases of the fuel cycle. This report focuses on four specific environmental metrics. • land use • water use • CO2 emissions • radiological Dose to workers Impacts associated with the processes in the front-end of the nuclear fuel cycle, mining through enrichment and deconversion of DUF6 are summarized from FCRD-FCO-2012-000124, Revision 1. Impact estimates are developed within this report for the remaining phases of the nuclear fuel cycle. These phases include fuel fabrication, reactor construction and operations, fuel reprocessing, and storage, transport, and disposal of associated used fuel and radioactive wastes. Impact estimates for each of the phases of the nuclear fuel cycle are given as impact factors normalized per unit process throughput or output. These impact factors can then be re-scaled against the appropriate mass flows to provide estimates for a wide range of potential fuel cycles. A companion report, FCRD-FCO-2013-000213, applies the impact factors to estimate and provide a comparative evaluation of 40 fuel cycles under consideration relative to these four environmental metrics.

  7. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    All but two Life-Cycle Assessment (LCA) studies make nofuels. The term “life-cycle assessment” (LCA) is used toInput-Output Life Cycle Assessment (EIO-LCA) US 2002 (428)

  8. Concentrations of PCBs and Hg in soils, sediments and water in the urbanized Bay

    E-Print Network [OSTI]

    management. A technical report of the Watershed Program. SFEI Contribution 608. San Francisco Estuary hypothesis that pollutant concentrations are elevated in specific parts of the urban landscape. 1. Pollutant) events and processes. 2. Concentrations at sites within 3 km of one another exhibit spatial

  9. Sensitivity Analysis of Reprocessing Cooling Times on Light Water Reactor and Sodium Fast Reactor Fuel Cycles

    SciTech Connect (OSTI)

    R. M. Ferrer; S. Bays; M. Pope

    2008-04-01T23:59:59.000Z

    The purpose of this study is to quantify the effects of variations of the Light Water Reactor (LWR) Spent Nuclear Fuel (SNF) and fast reactor reprocessing cooling time on a Sodium Fast Reactor (SFR) assuming a single-tier fuel cycle scenario. The results from this study show the effects of different cooling times on the SFR’s transuranic (TRU) conversion ratio (CR) and transuranic fuel enrichment. Also, the decay heat, gamma heat and neutron emission of the SFR’s fresh fuel charge were evaluated. A 1000 MWth commercial-scale SFR design was selected as the baseline in this study. Both metal and oxide CR=0.50 SFR designs are investigated.

  10. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    water, mining/oil extraction water, and power generationfor this new “water-intensive” extraction technique, theOil Supply (Data Source: (5)) Extraction water use data from

  11. Urban Economics

    E-Print Network [OSTI]

    Quigley, John M.

    2006-01-01T23:59:59.000Z

    property taxation regional economics residential segregationexternalities urban economics urban production externalitiesproperty taxation regional economics residential segregation

  12. Dresden Unit 2 hydrogen water chemistry: Chemical surveillance, oxide-film characterization, and recontamination during Cycle 10: Final report

    SciTech Connect (OSTI)

    Ruiz, C.P.; Peterson, J.P.; Robinson, R.N.; Sundberg, L.L.

    1989-03-01T23:59:59.000Z

    This document provides an Executive Summary of work performed under Project RP1930-7, BWR Hydrogen Water Chemistry - Chemical Surveillance. It describes the work performed to monitor chemical and radiological performance at Commonwealth Edison's Dresden Nuclear Power Station Unit 2 during Cycle 10, its second full fuel cycle on Hydrogen Water Chemistry. It includes the results of water chemistry measurements, shutdown gamma scan/dose rate measurements, and the results of stainless steel oxide film characterization. This experience at Dresden-2 continues to demonstrate that a plant can operate on Hydrogen Water Chemistry with only minor impact on plant parameters, compared with the beneficial effect on intergranular stress corrosion cracking (IGSCC) mitigation of sensitized stainless steel components. 4 figs., 2 tabs.

  13. Evaluation of the Daylight Cycle of Model-Predicted Cloud Amount and Condensed Water Path over Europe with Observations from MSG SEVIRI

    E-Print Network [OSTI]

    Stoffelen, Ad

    Evaluation of the Daylight Cycle of Model-Predicted Cloud Amount and Condensed Water Path over accurate information on diurnal cycles during daylight hours of cloud properties over land and ocean surfaces. This paper evaluates the daylight cycle of CA and CWP as predicted by the Regional Atmospheric

  14. A novel integrated concept of urban water management in a megalopolis from Latin America

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    .g. treatment of high heavy metals waters and emulsified oil wastes ­ ZOUBOLIS et al., 2000). The impurities are moved to the upper layers of the water column by tinny air bubbles, with posterior sludge removal

  15. Vegetated Roof Water-Balance Model: Experimental and Model Results

    E-Print Network [OSTI]

    urbanization effects on the water cycle. Although there are many stormwater best management practices (BMPs (ET) and soil media water storage between storm events. Lazzarin et al. (2005) estimated that ET ratesVegetated Roof Water-Balance Model: Experimental and Model Results James A. Sherrard Jr.1

  16. Water Infiltration and Permeability of Selected Urban Soils as Affected by Salinity and Sodicity

    E-Print Network [OSTI]

    Miyamoto, S.

    2012-10-05T23:59:59.000Z

    water (EC of 1.4 and 2.2 dS m-1 and SAR of 6 and 11) were applied twice a week at 1.7 cm per application for a total of 27 irrigation events using 46 cm of water. No significant effect of water quality was detected in Delnorte gravelly loam (Paleorthid...

  17. Life cycle assessment of urban waste management: Energy performances and environmental impacts. The case of Rome, Italy

    SciTech Connect (OSTI)

    Cherubini, Francesco [Joanneum Research, Elisabethstrasse 5, 8010, Graz (Austria)], E-mail: cherufra@yahoo.it; Bargigli, Silvia; Ulgiati, Sergio [Universita degli Studi di Napoli 'Parthenope', Dipartimento di Scienze per l'Ambiente, Centro Direzionale, Isola C4, 80133 Napoli (Italy)

    2008-12-15T23:59:59.000Z

    Landfilling is nowadays the most common practice of waste management in Italy in spite of enforced regulations aimed at increasing waste pre-sorting as well as energy and material recovery. In this work we analyse selected alternative scenarios aimed at minimizing the unused material fraction to be delivered to the landfill. The methodological framework of the analysis is the life cycle assessment, in a multi-method form developed by our research team. The approach was applied to the case of municipal solid waste (MSW) management in Rome, with a special focus on energy and material balance, including global and local scale airborne emissions. Results, provided in the form of indices and indicators of efficiency, effectiveness and environmental impacts, point out landfill activities as the worst waste management strategy at a global scale. On the other hand, the investigated waste treatments with energy and material recovery allow important benefits of greenhouse gas emission reduction (among others) but are still affected by non-negligible local emissions. Furthermore, waste treatments leading to energy recovery provide an energy output that, in the best case, is able to meet 15% of the Rome electricity consumption.

  18. Thermochemical water-splitting cycle, bench-scale investigations and process engineering. Annual report, October 1, 1978-September 30, 1979

    SciTech Connect (OSTI)

    Caprioglio, G.; McCorkle, K.H.; Besenbruch, G.E.; Rode, J.S.

    1980-03-01T23:59:59.000Z

    A program to investigate thermochemical water splitting has been under way at General Atomic Company (GA) since October 1972. This document is an annual progress report of Department of Energy (DOE) sponsored process development work on the GA sulfur-iodine thermochemical water splitting cycle. The work consisted of laboratory bench-scale investigations, demonstration of the process in a closed-loop cycle demonstrator, and process engineering design studies. A bench-scale system, consisting of three subunits, has been designed to study the cycle under continuous flow conditions. The designs of subunit I, which models the main solution reaction and product separation, and subunit II, which models the concentration and decomposition of sulfuric acid, were presented in an earlier annual report. The design of subunit III, which models the purification and decomposition of hydrogen iodide, is given in this report. Progress on the installation and operation of subunits I and II is described. A closed-loop cycle demonstrator was installed and operated based on a DOE request. Operation of the GA sulfur-iodine cycle was demonstrated in this system under recycle conditions. The process engineering addresses the flowsheet design of a large-scale production process consisting of four chemical sections (I through IV) and one helium heat supply section (V). The completed designs for sections I through V are presented. The thermal efficiency of the process calculated from the present flowsheet is 47%.

  19. Innovative Water Reuse

    E-Print Network [OSTI]

    Jaber, F. H.

    2011-01-01T23:59:59.000Z

    Concern? Urban BMPs ? Rain garden- bioretention areas ? Porous pavements ? Green roofs ? Rainwater harvesting Home Rain Garden Rain Garden in Parking Lot Types of Permeable Pavement Paver blocks Porous asphalt Porous concrete Turf Paver... management 1.Rain gardens 2.Porous pavement 3.Green roofs Hydrologic Cycle ISSUES ? Water Conservation ? Is there enough? ? Can conservation make a difference? ? Water Quality ? Contamination/pollution due to runoff Eagle...

  20. TYPES OF FLOODING IN AUSTRALIA Floods are part of the natural water cycle or a "Hydrologic Cycle". In this natural cycle, the energy of the sun causes

    E-Print Network [OSTI]

    Greenslade, Diana

    to carry the water that has entered the river network, and the banks overflow. The area that gets inundated an emergency kit containing: o a first aid kit o a torch and portable radio with spare batteries o candles records, including wills, birth/marriage certificates, banking, financial records, etc · keep a list

  1. The Pipe vs. The Shed: Waste Water compared with Natural Hydrology in an Urban Setting

    E-Print Network [OSTI]

    Lather, Alaska; Wozniak, Monika

    2011-01-01T23:59:59.000Z

    etc. ). Most oil and grease (aka sludge) are removed andoils, and greases; Page 14 of 20  winery waste; municipal water and wastewater sludge;

  2. Appalachian State University Water Resources Planning Committee Impacts of Urbanization on Headwater

    E-Print Network [OSTI]

    Thaxton, Christopher S.

    Temperature surges (Summer Months): · Contact and runoff from impervious surfaces during afternoon rain storms by groundwater influx UPSTREAM MIDSTREAM DOWNSTREAM #12;Appalachian State University ­ Water Resources Planning

  3. The fuel cycle economics of improved uranium utilization in light water reactors

    E-Print Network [OSTI]

    Abbaspour, Ali Tehrani

    A simple fuel cycle cost model has been formulated, tested satisfactorily (within better than 3% for a wide range of cases)

  4. Reductions in Urban Outdoor Water Use as an Adaptation to Rising

    E-Print Network [OSTI]

    Supplies in Southern California ENVIRONMENTAL AREA RESEARCH PIER Environmental Research www, including hydropower and power plant cooling. Increasing evidence shows that climate change landscaping and irrigation. A potential response to the predicted decrease in future water supplies

  5. The Pipe vs. The Shed: Waste Water compared with Natural Hydrology in an Urban Setting

    E-Print Network [OSTI]

    Lather, Alaska; Wozniak, Monika

    2011-01-01T23:59:59.000Z

    flow scaled to the Temescal Creek Watershed compared withet al. Friends of Temescal Creek Water Quality MonitoringServices, Temescal Creek area

  6. Evaluation of "Dry Year Option" Water Transfers from Agricultural to Urban Use 

    E-Print Network [OSTI]

    McCarl, Bruce A.; Jones, Lonnie L.; Lacewell, Ronald D.

    1997-01-01T23:59:59.000Z

    This study investigated the economics of an Edwards Aquifer region "dry-year option" buyout directed toward decreasing agricultural water use in an effort to augment springflow. The research involved several phases. First, we applied crop growth...

  7. Eddy Fluxes and Sensitivity of the Water Cycle to Spatial Resolution in Idealized Regional Aquaplanet Model Simulations

    SciTech Connect (OSTI)

    Hagos, Samson M.; Leung, Lai-Yung R.; Gustafson, William I.; Singh, Balwinder

    2014-02-28T23:59:59.000Z

    A multi-scale moisture budget analysis is used to identify the mechanisms responsible for the sensitivity of the water cycle to spatial resolution using idealized regional aquaplanet simulations. In the higher resolution simulations, moisture transport by eddies fluxes dry the boundary layer enhancing evaporation and precipitation. This effect of eddies, which is underestimated by the physics parameterizations in the low-resolution simulations, is found to be responsible for the sensitivity of the water cycle both directly, and through its upscale effect, on the mean circulation. Correlations among moisture transport by eddies at adjacent ranges of scales provides the potential for reducing this sensitivity by representing the unresolved eddies by their marginally resolved counterparts.

  8. Modeling urban runoff characteristics

    E-Print Network [OSTI]

    Garcia, Alfred

    1987-01-01T23:59:59.000Z

    the impact that urban1zation has on storm runoff. An accurate method is required to model urban watersheds and to simulate storm runoff. Research Objectives The purpose of this research was to quantitatively define the effect that urbanization has... are typical in the sense that they follow the steps outlined above. These models include: the British Road Research Laboratory Nodel (RRL), 1962; the Chicago Hydrograph Method (NERO), 1970; the Environmental Protection Agency Storm Water Management Model...

  9. AN AMMONIA-WATER ABSORPTION-HIAT-PUMP CYCLE Donald Kuhlenschmidt, Member ASHRAE

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    to an air-source heating- only heat-pump cycle which delivers its heat in- doors via circulating liquid,000 Btuh) input unit reported. KLY WORDS Absorption Heat-pump Air conditioning heating Ammonia Donald conditioning chillers. The authors are involved in a project to use this cycle in an air source heat pump

  10. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    Water Intensity of Transportation. Environmental Science &and Energy Use in Transportation (GREET) Model, Version 1.5.Water Intensity of Transportation. Environmental Science &

  11. Optimization of a seed and blanket thorium-uranium fuel cycle for pressurized water reactors

    E-Print Network [OSTI]

    Wang, Dean, 1971-

    2003-01-01T23:59:59.000Z

    A heterogeneous LWR core design, which employs a thorium/uranium once through fuel cycle, is optimized for good economics, wide safety margins, minimal waste burden and high proliferation resistance. The focus is on the ...

  12. Simulating and Optimizing Storm Water Management Strategies in an Urban Watershed

    E-Print Network [OSTI]

    Damodaram, Chandana

    2011-02-22T23:59:59.000Z

    watershed scenarios are described based on land use coverage characteristics and implementation of a detention pond ............................ 23 4 No. of Parking Lots and Rooftops being retrofit based on the percentage of area... ecosystems (USEPA 2000; Coffman 2000). Low Impact Development (LID) practices are an alternative approach for controlling storm water at the source like rooftops, parking lots and sidewalks. LID technologies include permeable pavements, rainwater...

  13. Water quality and urban runoff in selected canal communities along the Texas coast

    E-Print Network [OSTI]

    Messenger, Allen Lester

    1979-01-01T23:59:59.000Z

    at points along the canal. There are data included in this report on monthly canal water quality for the seven study areas. Samples were analyzed for coli- forms, nitrite, nitrate, Kjeldahl nitrogen (organic nitrogen), phos- phates, TOC, BOD , dissolved..., temperature and salinity profiles, and Rhodamine dye dis- placement. The purpose of this report is to evaluate the sources of pollu- tional loading within the study communities . These data along with information from the literature on coastal canals...

  14. Rev. 4/1/2009 Second Forum on Energy & Water Sustainability

    E-Print Network [OSTI]

    Keller, Arturo A.

    :00 Decision Support for Integrated Water-Energy Planning (V. Tidwell et al.) 16:30 Decision Support System Choices (R. Newmark et al.) 13:30 Reducing Greenhouse Gas Impacts in the Urban Water Cycle Through: Modeling Energy & Water Systems 15:30 Integrated System Dynamics Model to Assess Options for Emissions

  15. Effective Modeling of Urban Water Systems Conference Proceedings, Monograph 13. (edited by W. James, K.N. Irvine, E.A. McBean, and R.E. Pitt). CHI. Guelph, Ontario,

    E-Print Network [OSTI]

    Pitt, Robert E.

    Effective Modeling of Urban Water Systems Conference Proceedings, Monograph 13. (edited by W. James Systems Conference Proceedings, Monograph 13. (edited by W. James, K.N. Irvine, E.A. McBean, and R.E. Pitt

  16. Thermochemical water-splitting cycle, bench-scale investigations, and process engineering. Final report, February 1977-December 31, 1981

    SciTech Connect (OSTI)

    Norman, J.H.; Besenbruch, G.E.; Brown, L.C.; O'Keefe, D.R.; Allen, C.L.

    1982-05-01T23:59:59.000Z

    The sulfur-iodine water-splitting cycle is characterized by the following three reactions: 2H/sub 2/O + SO/sub 2/ + I/sub 2/ ..-->.. H/sub 2/SO/sub 4/ + 2HI; H/sub 2/SO/sub 4/ ..-->.. H/sub 2/O + SO/sub 2/ + 1/2 O/sub 2/; and 2HI ..-->.. H/sub 2/ + I/sub 2/. This cycle was developed at General Atomic after several critical features in the above reactions were discovered. These involved phase separations, catalytic reactions, etc. Estimates of the energy efficiency of this economically reasonable advanced state-of-the-art processing unit produced sufficiently high values (to approx.47%) to warrant cycle development effort. The DOE contract was largely directed toward the engineering development of this cycle, including a small demonstration unit (CLCD), a bench-scale unit, engineering design, and costing. The work has resulted in a design that is projected to produce H/sub 2/ at prices not yet generally competitive with fossil-fuel-produced H/sub 2/ but are projected to be favorably competitive with respect to H/sub 2/ from fossil fuels in the future.

  17. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    Drinking Water: Methyl Tertiary Butyl Ether (MTBE).http://www.epa.gov/mtbe/water.htm (11/30/10), Chiu, Y. W. ;LCFS LCI LP LPG MED MRO MSF MTBE MWD MWDOC NAICS NERC NETL

  18. Bark Beetles and Watersheds Workshop: Impacts to the Hydrologic Cycle and Water

    E-Print Network [OSTI]

    Tipple, Brett

    --Research Approaches and Results: Water Quantity/Hydrologic Impacts Water and energy balance in a forested stand University Union, Parlor A (3rd Floor) University of Utah Salt Lake City, December 1, 2011 Video Conference

  19. A Critical Analysis of Technological Innovation and Economic Development in Southern California's Urban Water Reuse And Recycling Industry

    E-Print Network [OSTI]

    Pilip-Florea, Shadrach Jay

    2012-01-01T23:59:59.000Z

    Water Task Force, “Water Recycling 2030: Recommendation’s of2007. Water Funding Recycling Program Strategic Plan. Web.grants_loans/water_recycling/docs/strategicplan2007.pdf

  20. Integrated supercritical water gasification combined cycle (IGCC) systems for improved performance and reduced operating costs in existing plants

    SciTech Connect (OSTI)

    Tolman, R.; Parkinson, W.J.

    1999-07-01T23:59:59.000Z

    A revolutionary hydrothermal heat recovery steam generator (HRSG) is being developed to produce clean fuels for gas turbines from slurries and emulsions of opportunity fuels. Water can be above 80% by weight and solids below 20%, including coal fines, coal water fuels, biomass, composted municipal refuse, sewage sludge and bitumen/Orimulsion. The patented HRSG tubes use a commercial method of particle scrubbing to improve heat transfer and prevent corrosion and deposition on heat transfer surfaces. A continuous-flow pilot plant is planned to test the HRSG over a wide range of operating conditions, including the supercritical conditions of water, above 221 bar (3,205 psia) and 374 C (705 F). Bench scale data shows, that supercritical water gasification below 580 C (1,076 F) and low residence time without catalysts or an oxidizer can produce a char product that can contain carbon up to the amount of fixed carbon in the proximate analysis of the solids in the feed. This char can be burned with coal in an existing combustion system to provide the heat required for gasification. The new HRSG tubes can be retrofitted into existing power plant boilers for repowering of existing plants for improved performance and reduced costs. A special condensing turbine allows final low-temperature cleaning and maintains quality and combustibility of the fuel vapor for modern gas turbine in the new Vapor Transmission Cycle (VTC). Increased power output and efficiency can be provided for existing plants, while reducing fuel costs. A preliminary computer-based process simulation model has been prepared that includes material and energy balances that simulate commercial-scale operations of the VTC on sewage sludge and coal. Results predict over 40% HHV thermal efficiency to electric power from sewage sludge at more than 83% water by weight. The system appears to become autothermal (no supplemental fuel required) at about 35% fixed carbon in the feed. Thus, bituminous and lignite coal slurries could be gasified at less than 25% coal and more than 75% water. Preliminary life cycle cost analyses indicate that disposal fees for sewage sludge improve operating economics over fuel that must be purchased, the cost and schedule advantages of natural gas-fired combined cycle systems are preserved. Sensitivity analyses show that increasing capital costs by 50% can be offset by an increase in sewage sludge disposal fees of $10/metric ton.

  1. Vol. 16, No. 2 May 2006Global Energy and Water Cycle Experiment World Climate Research Programme

    E-Print Network [OSTI]

    's climate system is an energy cycle that converts absorbed solar radiation into heat and associated, its rapid rotation, and its elliptical orbit about the sun, the solar heating is neither uniform nor ARE A NET SINK OF ENERGY Left panel shows zonal, seasonal average generation of available potential energy

  2. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    Suh, S. Water Embodied in Bioethanol in the United States.Use in the Production of Bioethanol and Petroleum Gasoline.for Producing Biofuels: Bioethanol and Biodiesel. Biomass

  3. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    Photovoltaic Produced Water Renewable Fuels Association ReliabilityFirst Corporation Reverse Osmosis Steam Assisted Gravity Drainage Soybean Meal Synthetic Crude Oil SERC Reliability

  4. Ecological controls on water-cycle response to climate variability in deserts

    E-Print Network [OSTI]

    Scanlon, Bridget R.

    sites for waste disposal (4). For example, the proposed U.S. repository to isolate highly radioactive are critical for water resources and waste disposal in deserts. Desert environments are particularly vulnerable in response to elevated winter precipitation reduced soil water storage to half of that in a nonvegetated

  5. The hydrological cycle tirelessly distributes water between land, ocean, atmosphere and cryosphere. Stefan Hagemann and his colleagues at the Max Planck Institute for Meteorology

    E-Print Network [OSTI]

    substance across the globe, but they also carry along thermal energy in the process ­ albeit hidden into liquid water or freezes to form ice. Conversely, energy input is necessary for ice to melt or sublimeThe hydrological cycle tirelessly distributes water between land, ocean, atmosphere and cryosphere

  6. Building the urban river edge : proposed connections to the water at the foot of Boston's Beacon Hill

    E-Print Network [OSTI]

    Gorini, Daniel

    1994-01-01T23:59:59.000Z

    The core of this investigation is based on the design of built form at the public urban river edge. It proposes the transformation of a portion of public park edge into public built edge. The Esplanade embankment at the ...

  7. Assessment of Possible Cycle Lengths for Fully Encapsulated Microstructure fueled light water reactor Concepts

    SciTech Connect (OSTI)

    R. Sonat Sen; Michael A. Pope; Abderrafi M. Ougouag; Kemal O. Pasamehmetoglu

    2013-02-01T23:59:59.000Z

    The use of TRISO-particle-based dispersion fuel within SiC matrix and cladding materials has the potential to allow the design of extremely safe LWRs with failure-proof fuel. This paper examines the feasibility of LWR-like cycle length for such fuel with the imposed constraint of strictly retaining the original geometry of the fuel pins and assemblies. The motivation for retaining the original geometry is to provide the ability to incorporate the fuel “as-is” into existing LWRs while retaining their thermal–hydraulic characteristics. Another mandatory constraint is use of low enriched uranium (at or below 20 w/o). The feasibility of using this fuel is assessed by looking at two factors: cycle lengths and fuel material failure rates. Other considerations (e.g., safety parameters such as reactivity coefficients, feedback, etc.) were not considered at this stage of the study. The study includes the examination of increases in the TRISO kernel sizes without changing the thickness of any of the coating layers. In addition, cases where the buffer layer thickness is allowed to vary are also considered. The study shows that a naïve use of UO2 (even up to 20 w/o enrichment) results in cycle lengths too short to be practical for existing LWR designs and operational demands. Increasing fissile inventory within the fuel compacts shows that acceptable cycle lengths can be achieved. The increase of fissile inventory can be accomplished through multiple means, including higher particle packing fraction, higher enrichment, larger fuel kernel sizes, and the use of higher density fuels (that contain a higher number of U atoms per unit volume). In this study, starting with the recognized highest packing fraction practically achievable (44%), combinations of the other means have been evaluated. The models demonstrate cycle lengths comparable to those of ordinary LWRs. As expected, TRISO particles with extremely large kernels are shown to fail under all considered scenarios. In contrast, the designs that do not depart too drastically from those of the nominal NGNP HTR fuel TRISO particles are shown to perform satisfactorily and display a high rates of survival under all considered scenarios.

  8. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    to current U.S. crude oil production of 7.2 million barrelsIn contrast to crude oil production, natural gas extractionProduced Water from Production of Crude Oil, Natural Gas,

  9. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    into electricity, a great deal of waste heat is generated.This waste heat in fact drives water consumption andto absorb and remove this waste heat from the power plant.

  10. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    CO, 1974; An Assessment of Oil Shale Technologies. Office ofWater Requirements for an Oil Shale Plant Based on ParahoControls for a Commercial Oil Shale Industry. Volume 1. An

  11. A Critical Analysis of Technological Innovation and Economic Development in Southern California's Urban Water Reuse And Recycling Industry

    E-Print Network [OSTI]

    Pilip-Florea, Shadrach Jay

    2012-01-01T23:59:59.000Z

    Richardson, Mark 2009. Siemens Water Technologies Company2011. www. 3news.co.nz Siemens Water Technologies, 2012.conglomerations, US Filter, now Siemens Water Technologies

  12. Direct-contact condensers for open-cycle OTEC applications: Model validation with fresh water experiments for structured packings

    SciTech Connect (OSTI)

    Bharathan, D.; Parsons, B.K.; Althof, J.A.

    1988-10-01T23:59:59.000Z

    The objective of the reported work was to develop analytical methods for evaluating the design and performance of advanced high-performance heat exchangers for use in open-cycle thermal energy conversion (OC-OTEC) systems. This report describes the progress made on validating a one-dimensional, steady-state analytical computer of fresh water experiments. The condenser model represents the state of the art in direct-contact heat exchange for condensation for OC-OTEC applications. This is expected to provide a basis for optimizing OC-OTEC plant configurations. Using the model, we examined two condenser geometries, a cocurrent and a countercurrent configuration. This report provides detailed validation results for important condenser parameters for cocurrent and countercurrent flows. Based on the comparisons and uncertainty overlap between the experimental data and predictions, the model is shown to predict critical condenser performance parameters with an uncertainty acceptable for general engineering design and performance evaluations. 33 refs., 69 figs., 38 tabs.

  13. The use of kelp sieve tube sap metal composition to characterize urban runoff in southern California coastal waters

    E-Print Network [OSTI]

    Manley, Steven L.

    The use of kelp sieve tube sap metal composition to characterize urban runoff in southern California a b s t r a c t This study introduces an innovative method for biomonitoring using giant kelp analyses indicate that polluted seawater may affect kelp uptake of metals essential for cellular function

  14. Assessment of Possible Cycle Lengths for Fully-Ceramic Micro-Encapsulated Fuel-Based Light Water Reactor Concepts

    SciTech Connect (OSTI)

    R. Sonat Sen; Michael A. Pope; Abderrafi M. Ougouag; Kemal O. Pasamehmetoglu

    2012-04-01T23:59:59.000Z

    The tri-isotropic (TRISO) fuel developed for High Temperature reactors is known for its extraordinary fission product retention capabilities [1]. Recently, the possibility of extending the use of TRISO particle fuel to Light Water Reactor (LWR) technology, and perhaps other reactor concepts, has received significant attention [2]. The Deep Burn project [3] currently focuses on once-through burning of transuranic fissile and fissionable isotopes (TRU) in LWRs. The fuel form for this purpose is called Fully-Ceramic Micro-encapsulated (FCM) fuel, a concept that borrows the TRISO fuel particle design from high temperature reactor technology, but uses SiC as a matrix material rather than graphite. In addition, FCM fuel may also use a cladding made of a variety of possible material, again including SiC as an admissible choice. The FCM fuel used in the Deep Burn (DB) project showed promising results in terms of fission product retention at high burnup values and during high-temperature transients. In the case of DB applications, the fuel loading within a TRISO particle is constituted entirely of fissile or fissionable isotopes. Consequently, the fuel was shown to be capable of achieving reasonable burnup levels and cycle lengths, especially in the case of mixed cores (with coexisting DB and regular LWR UO2 fuels). In contrast, as shown below, the use of UO2-only FCM fuel in a LWR results in considerably shorter cycle length when compared to current-generation ordinary LWR designs. Indeed, the constraint of limited space availability for heavy metal loading within the TRISO particles of FCM fuel and the constraint of low (i.e., below 20 w/0) 235U enrichment combine to result in shorter cycle lengths compared to ordinary LWRs if typical LWR power densities are also assumed and if typical TRISO particle dimensions and UO2 kernels are specified. The primary focus of this summary is on using TRISO particles with up to 20 w/0 enriched uranium kernels loaded in Pressurized Water Reactor (PWR) assemblies. In addition to consideration of this 'naive' use of TRISO fuel in LWRs, several refined options are briefly examined and others are identified for further consideration including the use of advanced, high density fuel forms and larger kernel diameters and TRISO packing fractions. The combination of 800 {micro}m diameter kernels of 20% enriched UN and 50% TRISO packing fraction yielded reactivity sufficient to achieve comparable burnup to present-day PWR fuel.

  15. A Critical Analysis of Technological Innovation and Economic Development in Southern California's Urban Water Reuse And Recycling Industry

    E-Print Network [OSTI]

    Pilip-Florea, Shadrach Jay

    2012-01-01T23:59:59.000Z

    news-service/huge-lack-of-water- in-california-means-big-crop irrigation due to lack of steady water sources (CA DWR,concerned over the lack of a water industry trade lobby, ala

  16. Urban nUtrient Urban nUtrient

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Soil-Water RelationshipsUrban nUtrient ManageMent Handbook #12;#12;Urban nUtrient ManageMent Handbook Content Coordinators: Michael Goatley Jr., Professor, Crop and Soil Environmental Sciences, Virginia Tech Kevin Hensler

  17. Urbanizing Watersheds and Changing River Flood Dynamics: Implications for Urban Wetland Restoration

    E-Print Network [OSTI]

    Simmons, M.

    2003-01-01T23:59:59.000Z

    Urbanization alters river hydrology, morphology, water quality, and habitat and ecology. Most of these associated changes are due to an increase in impervious surface cover (ISC) throughout the watershed. But the spatial location of urban areas...

  18. Strategies for systemic urban constructed wetlands

    E-Print Network [OSTI]

    Balderas-Guzmán, Celina

    2013-01-01T23:59:59.000Z

    As a result of ubiquitous impermeable surfaces, conventional water management and stormwater infrastructure, and the resultant degradation of natural hydrologic networks, most American urban areas have suffered severely ...

  19. Prospects for and problems of using light-water supercritical-pressure coolant in nuclear reactors in order to increase the efficiency of the nuclear fuel cycle

    SciTech Connect (OSTI)

    Alekseev, P. N.; Semchenkov, Yu. M.; Sedov, A. A., E-mail: sedov@dhtp.kial.ru; Subbotin, S. A.; Chibinyaev, A. V. [Russian Research Centre Kurchatov Institute (Russian Federation)

    2011-12-15T23:59:59.000Z

    Trends in the development of the power sector of the Russian and world power industries both at present time and in the near future are analyzed. Trends in the rise of prices for reserves of fossil and nuclear fuels used for electricity production are compared. An analysis of the competitiveness of electricity production at nuclear power plants as compared to the competitiveness of electricity produced at coal-fired and natural-gas-fired thermal power plants is performed. The efficiency of the open nuclear fuel cycle and various versions of the closed nuclear fuel cycle is discussed. The requirements on light-water reactors under the scenario of dynamic development of the nuclear power industry in Russia are determined. Results of analyzing the efficiency of fuel utilization for various versions of vessel-type light-water reactors with supercritical coolant are given. Advantages and problems of reactors with supercritical-pressure water are listed.

  20. Measurements of the volatilities of solutes from aqueous solutions and their application to water/steam cycles

    SciTech Connect (OSTI)

    Jensen, J.P. [Technical Univ. of Denmark, Lyngby (Denmark). Dept. of Chemical Engineering; Palmer, D.A.; Simonson, J.M. [Oak Ridge National Lab., TN (United States)

    1995-02-01T23:59:59.000Z

    Partitioning of NaSO{sub 4} and NaHSO{sub 4} between the liquid and vapor phases was measured at 300, 325 and 350{degrees}C by sampling both phases from a static platinum-lined autoclave. Sample compositions were determined by ion chromatography and acidimetric titrations. The solutions were buffered with either acid or base so that the volatility of individual species was determined. The molal thermodynamic partitioning constants were calculated by taking into account the mean stoichiometric activity coefficient in the liquid phase and the hydrolysis equilibrium constants. The vapor phase species were assumed to be neutral molecules with unit activity coefficients. The strong temperature dependence of the partitioning constant was treated by the isocoulombic method to obtain a linear dependence of the logarithm of the partitioning constant versus reciprocal temperature in Kelvin. A model is described for predicting the composition of the condensate in the water/steam cycle of power plants using drum boilers. Equilibrium between liquid and steam is assumed in the drum during boiling, and in the low pressure turbine on steam condensation. The model is based on the measured partitioning constants of HCl, NH{sub 4}Cl, NaCl, NaOH, H{sub 2}SO{sub 4}, NaHSO{sub 4}, NaSO{sub 4} and NH{sub 3}, the hydrolysis of HSO{sub 4}{sup -} and NH{sub 4}{sup +} and the ionic product of water. Two test cases are given to demonstrate the sensitivity of the pH of the first condensate to the concentrations of various anions relative to the corresponding sodium concentration in the drum. These calculations also indicate that very high concentrations of solutes can be achieved under certain conditions.

  1. Urban Economics

    E-Print Network [OSTI]

    Quigley, John M.

    2006-01-01T23:59:59.000Z

    E. , Hanushek, E. and Quigley, J. 2004. Opportunities, race,Baltimore, MD: John Hopkins Press. Quigley, J. 2001. Theof Regional Science 35, Quigley, J. 1998. Urban diversity

  2. Infrastructure Ecology for Sustainable and Resilient Urban Infrastructure Design

    SciTech Connect (OSTI)

    Jeong, Hyunju [Georgia Institute of Technology; Pandit, Arka [Georgia Institute of Technology; Crittenden, John [Georgia Institute of Technology; Xu, Ming [University of Michigan; Perrings, Charles [Arizona State University; Wang, Dali [ORNL; Li, Ke [University of Georgia; French, Steve [Georgia Institute of Technology

    2010-10-01T23:59:59.000Z

    The population growth coupled with increasing urbanization is predicted to exert a huge demand on the growth and retrofit of urban infrastructure, particularly in water and energy systems. The U.S. population is estimated to grow by 23% (UN, 2009) between 2005 and 2030. The corresponding increases in energy and water demand were predicted as 14% (EIA, 2009) and 20% (Elcock, 2008), respectively. The water-energy nexus needs to be better understood to satisfy the increased demand in a sustainable manner without conflicting with environmental and economic constraints. Overall, 4% of U.S. power generation is used for water distribution (80%) and treatment (20%). 3% of U.S. water consumption (100 billion gallons per day, or 100 BGD) and 40% of U.S. water withdrawal (340 BGD) are for thermoelectric power generation (Goldstein and Smith, 2002). The water demand for energy production is predicted to increase most significantly among the water consumption sectors by 2030. On the other hand, due to the dearth of conventional water sources, energy intensive technologies are increasingly in use to treat seawater and brackish groundwater for water supply. Thus comprehending the interrelation and interdependency between water and energy system is imperative to evaluate sustainable water and energy supply alternatives for cities. In addition to the water-energy nexus, decentralized or distributed concept is also beneficial for designing sustainable water and energy infrastructure as these alternatives require lesser distribution lines and space in a compact urban area. Especially, the distributed energy infrastructure is more suited to interconnect various large and small scale renewable energy producers which can be expected to mitigate greenhouse gas (GHG) emissions. In the case of decentralized water infrastructure, on-site wastewater treatment facility can provide multiple benefits. Firstly, it reduces the potable water demand by reusing the treated water for non-potable uses and secondly, it also reduces the wastewater load to central facility. In addition, lesser dependency on the distribution network contributes to increased reliability and resiliency of the infrastructure. The goal of this research is to develop a framework which seeks an optimal combination of decentralized water and energy alternatives and centralized infrastructures based on physical and socio-economic environments of a region. Centralized and decentralized options related to water, wastewater and stormwater and distributed energy alternatives including photovoltaic (PV) generators, fuel cells and microturbines are investigated. In the context of the water-energy nexus, water recovery from energy alternatives and energy recovery from water alternatives are reflected. Alternatives recapturing nutrients from wastewater are also considered to conserve depleting resources. The alternatives are evaluated in terms of their life-cycle environmental impact and economic performance using a hybrid life cycle assessment (LCA) tool and cost benefit analysis, respectively. Meeting the increasing demand of a test bed, an optimal combination of the alternatives is designed to minimize environmental and economic impacts including CO2 emissions, human health risk, natural resource use, and construction and operation cost. The framework determines the optimal combination depending on urban density, transmission or conveyance distance or network, geology, climate, etc. Therefore, it will be also able to evaluate infrastructure resiliency against physical and socio-economic challenges such as population growth, severe weather, energy and water shortage, economic crisis, and so on.

  3. Identification of Management and Planning Problems of Urban Water Resources in the Metropolitan Area of Greater San Antonio

    E-Print Network [OSTI]

    Garner, K.; Shih, C. S.

    including the inventory and planning control for both surface and ground Water Resource Management of the San Antonio area are presented. Emphasis has been placed upon the identification of the probabilistic nature of various decision-making parameters...

  4. Simulation and performance analysis of basic GAX and advanced GAX cycles with ammonia/water and ammonia/water/LiBr absorption fluids

    SciTech Connect (OSTI)

    Zaltash, A.; Grossman, G.

    1996-03-01T23:59:59.000Z

    The generator-absorber heat exchange (GAX) and branched GAX cycles are generally considered with NH{sub 3}/H{sub 2}O as their working fluid. The potential consequences of using a ternary mixture of NH{sub 3}/H{sub 2}O/LiBr (advanced fluids) in the GAX and Branched GAX (advanced cycles) are discussed in this study. A modular steady state absorption simulation model(ABSIM) was used to investigate the potential of combining the above advanced cycles with the advanced fluids. ABSIM is capable of modeling varying cycle configurations with different working fluids. Performance parameters of the cycles, including coefficient of performance (COP) and heat duties, were investigated as functions of different operating parameters in the cooling mode for both the NH {sub 3}/H{sub 2}O binary and the NH{sub 3}/H{sub 2}O/LiBr ternary mixtures. High performance potential of GAX and branched GAX cycles using the NH{sub 3}/H{sub 2}O/LiBr ternary fluid mixture was achieved especially at the high range of firing temperatures exceeding 400{degrees}F. The cooling COP`s have been improved by approximately 21% over the COP achieved with the NH{sub 3}/H{sub 2}O binary mixtures. These results show the potential of using advanced cycles with advanced fluid mixtures (ternary or quaternary fluid mixtures).

  5. Preliminary studies on the heat exchanger option for S-CO{sub 2} power conversion cycle coupled to water cooled SMR

    SciTech Connect (OSTI)

    Ahn, Y.; Lee, J. [Dept. of Nuclear and Quantum Engineering, Korea Advanced Inst. of Science and Technology, 373-1 Guseong-dong Yuseong-gu, Daejeon, 305-701 (Korea, Republic of); Lee, J. I. [Dept. of Nuclear and Quantum Engineering, Korea Advanced Inst. of Science and Technology, 373-1 Guseong-dong Yuseong-gu, Daejeon, 305-701 (Korea, Republic of); Dept. of Nuclear Engineering, Khalifa Univ. of Science, Technology and Research (KUSTAR), P.O.Box 127788, Abu Dhabi (United Arab Emirates)

    2012-07-01T23:59:59.000Z

    For more than a half century, the steam Rankine cycle had been the major power conversion cycle for a nuclear power plant. However, as the interest on the next generation reactors grows, a variety of alternative power conversion systems have been studied. Among them, the S-CO{sub 2} cycle (Supercritical carbon dioxide Brayton cycle) is considered as a promising candidate due to several benefits such as 1) Relatively high thermal efficiency at relatively low turbine inlet temperature, 2) High efficiency with simple lay-out 3) Compactness of turbo-machineries. 4) Compactness of total cycle combined with PCHE (Printed Circuit Heat Exchanger). According to the conventional classification of heat exchangers (HE), there are three kind of HE, 1) Tubular HEs, 2) Plate-type HEs, 3) Extended surface HEs. So far, the researcher has mostly assumed PCHE type HE for the S-CO{sub 2} cycle due to its compactness with reasonably low pressure drop. However, PCHE is currently one of the most expensive components in the cycle, which can have a negative effect on the economics of the cycle. Therefore, an alternative for the HE should be seriously investigated. By comparing the operating condition (pressure and temperature) there are three kind of HE in the S-CO{sub 2} cycle, 1) IHX (Intermediate Heat exchanger) 2) Recuperator and 3) Pre-cooler. In each heat exchanger, hot side and cold side coolants are different, i.e. reactor coolant to S-CO{sub 2} (IHX), S-CO{sub 2} to S-CO{sub 2}(Recuperator), S-CO{sub 2} to water (Pre-cooler). By considering all the attributes mentioned above, all existing types of heat exchangers are compared to find a possible alternative to PCHE. The comparing factors are 1) Size(volume), 2) Cost. Plate fin type HEs are considered to be the most competitive heat exchanger regarding the size and the cost after some improvements on the design limit are made. (authors)

  6. Photo Courtesy of Carlsbad Water Distict Economic Evaluation for Water Recycling

    E-Print Network [OSTI]

    Lund, Jay R.

    -i- Photo Courtesy of Carlsbad Water Distict Economic Evaluation for Water Recycling In Urban Areas........................................................................................................................................... 4 BENEFICIAL USES OF RECYCLED WATER................................................................................................ 5 MOTIVATIONS FOR RECYCLED WATER USE

  7. SINGH and BHATNAGAR Urban lakes and wetlands: opportunities and

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , urban water bodies commonly become cesspools due to lack of sanitation facilities. Delhi is continually urbanizing at a rapid pace that has affected the condition of water bodies. To identify water resource to map all the water bodies including groundwater recharge sites ­ 44 lakes and 355 village ponds. Hauz

  8. Flexible urbanism

    E-Print Network [OSTI]

    Anandam, Anahita

    2006-01-01T23:59:59.000Z

    This thesis seeks to find a new approach/method towards urbanization in existing low density neighborhoods in major metropolitan cities in the United States. The near South side of the city of Chicago (a city that carries ...

  9. Urban stairs

    E-Print Network [OSTI]

    Cho, Yoonhee

    2012-01-01T23:59:59.000Z

    In recent decades, Seoul in Korea has experienced a rapid economic and urban development. As a result, the city exposes extreme disharmony between different zones. For example, the heavy mega structures are inconsiderately ...

  10. Site Suitability Assessment for Irrigating Urban Landscapes with Water of Elevated Salinity in the Southwest. Consolidated Final Report. Part 1. Water Quality and Plant Tolerance

    E-Print Network [OSTI]

    Miyamoto, S.

    tolerance of various landscape plants, and the levels of salt accumulation in different types of soils. The main source of funding came from the Rio Grande Basin Initiative through the Texas Water Research Institute, matched by a local fund from El Paso...

  11. ASSESSMENT OF POSSIBLE CYCLE LENGTHS FOR FULLY-CERAMIC MICRO-ENCAPSULATED FUEL-BASED LIGHT WATER REACTOR CONCEPTS

    SciTech Connect (OSTI)

    R. Sonat Sen; Michael A. Pope; Abderrafi M. Ougouag; Kemal Pasamehmetoglu; Francesco Venneri

    2012-04-01T23:59:59.000Z

    The use of TRISO-particle-based dispersion fuel within SiC matrix and cladding materials has the potential to allow the design of extremely safe LWRs with failure-proof fuel. This paper examines the feasibility of LWR-like cycle length for such a low enriched uranium fuel with the imposed constraint of strictly retaining the original geometry of the fuel pins and assemblies. The motivation for retaining the original geometry is to provide the ability to incorporate the fuel 'as-is' into existing LWRs while retaining their thermal-hydraulic characteristics. The feasibility of using this fuel is assessed by looking at cycle lengths and fuel failure rates. Other considerations (e.g., safety parameters, etc.) were not considered at this stage of the study. The study includes the examination of different TRISO kernel diameters without changing the coating layer thicknesses. The study shows that a naive use of UO{sub 2} results in cycle lengths too short to be practical for existing LWR designs and operational demands. Increasing fissile inventory within the fuel compacts shows that acceptable cycle lengths can be achieved. In this study, starting with the recognized highest packing fraction practically achievable (44%), higher enrichment, larger fuel kernel sizes, and the use of higher density fuels have been evaluated. The models demonstrate cycle lengths comparable to those of ordinary LWRs. As expected, TRISO particles with extremely large kernels are shown to fail under all considered scenarios. In contrast, the designs that do not depart too drastically from those of the nominal NGNP HTR fuel TRISO particles are shown to perform satisfactorily and display a high rates of survival under all considered scenarios. Finally, it is recognized that relaxing the geometry constraint will result in satisfactory cycle lengths even using UO{sub 2}-loaded TRISO particles-based fuel with enrichment at or below 20 w/o.

  12. Submitted to the Journal of the American Water Resources Association Potential Human Health Effects Associated with Pathogens in Urban Wet Weather Flows

    E-Print Network [OSTI]

    Pitt, Robert E.

    Effects Associated with Pathogens in Urban Wet Weather Flows Robert Pitt1 , Melinda Lalor2 , and John stormwater conveyance systems, or wet weather sewage overflows, may adversely impact many of the desired uses. Urban runoff or wet weather flows include not only precipitation and washoff from lawns and landscaped

  13. Transmutation, Burn-Up and Fuel Fabrication Trade-Offs in Reduced-Moderation Water Reactor Thorium Fuel Cycles - 13502

    SciTech Connect (OSTI)

    Lindley, Benjamin A.; Parks, Geoffrey T. [University of Cambridge, Cambridge (United Kingdom)] [University of Cambridge, Cambridge (United Kingdom); Franceschini, Fausto [Westinghouse Electric Company LLC, Cranberry Township, PA (United States)] [Westinghouse Electric Company LLC, Cranberry Township, PA (United States)

    2013-07-01T23:59:59.000Z

    Multiple recycle of long-lived actinides has the potential to greatly reduce the required storage time for spent nuclear fuel or high level nuclear waste. This is generally thought to require fast reactors as most transuranic (TRU) isotopes have low fission probabilities in thermal reactors. Reduced-moderation LWRs are a potential alternative to fast reactors with reduced time to deployment as they are based on commercially mature LWR technology. Thorium (Th) fuel is neutronically advantageous for TRU multiple recycle in LWRs due to a large improvement in the void coefficient. If Th fuel is used in reduced-moderation LWRs, it appears neutronically feasible to achieve full actinide recycle while burning an external supply of TRU, with related potential improvements in waste management and fuel utilization. In this paper, the fuel cycle of TRU-bearing Th fuel is analysed for reduced-moderation PWRs and BWRs (RMPWRs and RBWRs). RMPWRs have the advantage of relatively rapid implementation and intrinsically low conversion ratios. However, it is challenging to simultaneously satisfy operational and fuel cycle constraints. An RBWR may potentially take longer to implement than an RMPWR due to more extensive changes from current BWR technology. However, the harder neutron spectrum can lead to favourable fuel cycle performance. A two-stage fuel cycle, where the first pass is Th-Pu MOX, is a technically reasonable implementation of either concept. The first stage of the fuel cycle can therefore be implemented at relatively low cost as a Pu disposal option, with a further policy option of full recycle in the medium term. (authors)

  14. Photovoltaics Life Cycle Analysis

    E-Print Network [OSTI]

    (air, water, solid) M, Q E PV array Photovoltaic modules Balance of System (BOS) (Inverters & Environmental Engineering Department Columbia University and National Photovoltaic (PV) EHS Research Center Brookhaven National Laboratory www.clca.columbia.edu www.pv.bnl.gov #12;2 The Life Cycle of PVThe Life Cycle

  15. Organic Rankine-cycle power systems working fluids study: Topical report No. 1: Fluorinol 85. [85 mole % trofluoroethanol in water

    SciTech Connect (OSTI)

    Jain, M.L.; Demirgian, J.C.; Cole, R.L.

    1986-09-01T23:59:59.000Z

    An investigation to experimentally determine the thermal stability limits and degradation rates of Fluorinol 85 as a function of maximum cycle temperatures was initiated in 1982. Following the design and construction of a dynamic test loop capable of simulating the thermodynamic conditions of possible prototypical organic Rankine-cycle (ORC) power systems, several test runs were completed. The Fluorinol 85 test loop was operated for about 3800 h, covering a temperature range of 525-600/sup 0/F. Both liquid and noncondensable vapor (gas) samples were drawn periodically and analyzed using capillary column gas chromatography, gas chromatography/mass spectrometry and mass spectrometry. Results indicate that Fluorinol 85 would not decompose significantly over an extended period of time, up to a maximum cycle temperature of 550/sup 0/F. However, 506-h data at 575/sup 0/F show initiation of significant degradation. The 770-h data at 600/sup 0/F, using a fresh charge of Fluorinol 85, indicate an annual degradation rate of more than 17.2%. The most significant degradation product observed is hydrofluoric acid, which could cause severe corrosion in an ORC system. Devices to remove the hydrofluoric acid and prevent extreme temperature excursions are necessary for any ORC system using Fluorinol 85 as a working fluid.

  16. Water Privatisation 

    E-Print Network [OSTI]

    Zölls, Elisa

    2011-08-17T23:59:59.000Z

    This dissertation deals with the policy issues of large-scale, urban water privatisation projects in the face of uncertainty and variability. The main objective is to evaluate whether a single policy approach, namely privatisation associated...

  17. Groundwater Management and the Cost of Reduced Surface Water Deliveries to Urban Areas: The Case of the Central and West Coast Basins of Southern California

    E-Print Network [OSTI]

    Sunding, David L.; Hamilton, Stephen F; Ajami, Newsha K

    2009-01-01T23:59:59.000Z

    Direct Use Desalter Water Residual Demand Source: Datathe basins. Residual demand for imported water, which is thefrom MWD. Residual demand for imported water represents the

  18. Groundwater Management and the Cost of Reduced Surface Water Deliveries to Urban Areas: The Case of the Central and West Coast Basins of Southern California

    E-Print Network [OSTI]

    Sunding, David L.; Hamilton, Stephen F; Ajami, Newsha K

    2009-01-01T23:59:59.000Z

    represents the annual water shortage that cannot be met fromservice associated with water shortage events. Total Costscost to consumers of a water shortage. 11 LCPSIM optimizes

  19. An urban lake remediation experiment

    SciTech Connect (OSTI)

    Castelli, S.E.; Gardner, K.H.; Jennings, A.A.

    1998-07-01T23:59:59.000Z

    Circumstances provided the opportunity to study a small urban lake as the surrounding municipalities attempted to improve its aesthetic quality by dredging. This manuscript focuses primarily on the sediments in the system: accumulation rates, the expected dynamics of the lake bed drying process, and the influence of the sediments on water quality.

  20. Urban/Suburban Landscape & Conservation

    E-Print Network [OSTI]

    Dever, Jennifer A.

    of groundwater 5) Increased production of CO2 #12;3 Ground water pollution due to "storm run-off" - Construction.S. was fairly distinctly split into localized urban- industrial landscapes and widespread rural landscapes to development pressure in terms of housing, infrastructure and industry Impacting habitat cont. 1) Fragmentation

  1. Water by truck in Mexico City

    E-Print Network [OSTI]

    Pike, Jill (Jill Susan)

    2005-01-01T23:59:59.000Z

    Supply of water to urban households by tanker truck in developing and advanced developing countries is often associated with early stages of urbanization or with the private markets on which water vendors serve households ...

  2. Advanced thermochemical hydrogen cycles

    SciTech Connect (OSTI)

    Hollabaugh, C.M.; Bowman, M.G.

    1981-01-01T23:59:59.000Z

    The overall objective of this program is to contribute to the development of practical thermochemical cycles for the production of hydrogen from water. Specific goals are: investigate and evaluate the technical and economic viability of thermochemical cycles as an advanced technology for producing hydrogen from water; investigate and evaluate the engineering principles involved in interfacing individual thermochemical cycles with the different thermal energy sources (high temperature fission, solar, and fusion); and conduct a continuing research and development effort to evaluate the use of solid sulfates, oxides and other compounds as potentially advanced cycles and as alternates to H/sub 2/SO/sub 4/ based cycles. Basic thermochemistry studies have been completed for two different steps in the decomposition of bismuth sulfate. Two different bismuth sulfate cycles have been defined for different sulfuric acid strengths. The eventual best cycle will depend on energy required to form sulfuric acid at different concentrations. A solids decomposition facility has been constructed and practical studies of solid decompositions are being conducted. The facility includes a rotary kiln system and a dual-particle fluidized bed system. Evaluation of different types of cycles for coupling with different heat sources is continuing.

  3. 8th World Wide Workshop for Young Environmental Scientists WWW-YES-2008: Urban waters: resource or risks? 13-16 May 2008

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    or risks? 13-16 May 2008 Urban wastewater reuse for irrigated agriculture in Jordan: Soil sustainability that suitable soil management strategies, such as periodic leaching and nutrient management are required on soil sustainability was investigated by means of soil sampling and analysis combined with interviews

  4. Modeling the effect of soil structure on water flow and isoproturon dynamics in an agricultural field receiving repeated urban waste compost application

    E-Print Network [OSTI]

    Boyer, Edmond

    field receiving repeated urban waste compost application Vilim Filipovi1,2,3 , Yves Coquet2 , Valérie properties. Tillage practices and compost amendments can modify soil structure and create heterogeneity and compost application on transport processes. A modeling study was performed to evaluate how the presence

  5. 9th World Wide Workshop for Young Environmental Scientists WWW-YES-Brazil-2009: Urban waters: resource or risks? 26-30 October 2009

    E-Print Network [OSTI]

    Boyer, Edmond

    . Selected significant findings to be discussed include water consumption per capita distribution user; and the conflicts related with the water supply and sewage systems; Water consumption per capita. However, most of the time, the mean or average value of water consumption per c

  6. Residential water use and landscape vegetation dynamics in Los Angeles

    E-Print Network [OSTI]

    Mini, Caroline

    2013-01-01T23:59:59.000Z

    ecohydrology and the urban water challenge in the westernCalifornia single- family water use efficiency study. Rep.the California Dept. of Water Resources. Domene, E. , Saurí,

  7. Water supply analysis for restoring the Colorado River Delta, Mexico

    E-Print Network [OSTI]

    Medellin-Azuara, Josue; Lund, Jay R.; Howitt, Richard E.

    2007-01-01T23:59:59.000Z

    to Pay for Additional Transboundary Water Flows from the US.2001). "Improving California Water Management: Optimizingloss functions to value urban water scarcity in California."

  8. Water resources planning under climate change and variability

    E-Print Network [OSTI]

    O'Hara, Jeffrey Keith

    2007-01-01T23:59:59.000Z

    Scenario to Climatic Changes. Water Resources Management 19:2006) Quantifying the Urban Water Supply Impacts of Climateto the Shape of Supply? Water Demand Under Heterogeneous

  9. Evaluation of the tritium content in light water reactor control and absorber rods to obtain data for the fuel cycle backend

    SciTech Connect (OSTI)

    Bleier, A.; Neeb, K.H.; Gelfort, E.; Mischke, J.

    1986-08-01T23:59:59.000Z

    Tritium inventories and tritium distribution have been determined in boron glass absorber rods discharged from a pressurized water reactor first-cycle core and in spent boron carbide (B/sub 4/C) control rods from a boiling water reactor. The total tritium inventory in the boron glass absorber rods from the Stade nuclear reactor amounts to approx. =8.0 x 10/sup 10/ Bq (2.2 Ci) per rod. Of this, 99.6% was fixed in the boron glass itself and 0.4% in the Al/sub 2/O/sub 3/ pellets. The 4 x 10/sup -3/% fractions in the tube cladding and support pipe and the 1 x 10/sup -2/% fraction in the fill gas accounted for an insignificant part of the total tritium inventory of the rod. This experimentally determined tritium inventory was a factor of 5 larger than that suggested by the calculated estimate. The discrepancy between analyzed and calculated values can be explained by tritium formation from lithium impurities in the boron glass, where a 30-ppm lithium content would be adequate for this tritium inventory to be generated by the reaction /sup 6/Li(n,..cap alpha..)/sup 3/H. Evaluation of the B/sub 4/C control rods from the Lingen nuclear reactor after 3 yr of operation gave a 3.2 x 10/sup 10/Bq(0.85-Ci)tritium inventory per B/sub 4/C rod, while the total tritium inventory for a control rod assembly containing 60 B/sub 4/C rods was approx. =1.9 x 10/sup 12/ Bq (50 Ci). The tritium generated was essentially bound 100% in the B/sub 4/C, since the hulls contained only 6 x 10/sup -3/% and the fill gas only 2 x 10/sup -4/%.

  10. Duty Cycle Analysis & Tools: Maximizing Vehicle Performance (Presentation)

    SciTech Connect (OSTI)

    Walkowicz, K.

    2009-10-28T23:59:59.000Z

    Shows that the benefits of using hybrid vehicle trucks in fleets depends on the duty cycle, or how the vehicles will be driven (e.g., stop and go) over a particular route (e.g., urban or rural).

  11. Going Green? Urban vs. Rural Residency and Pro-Environmental Attitudes in China

    E-Print Network [OSTI]

    Chiu, Samantha

    drinking water by 2010 [?] and demands to improve urban sewage systems in cities with populations over 200,000; hoping that by 2010 at least 60% of urban water and 95% of industrial waste will be processed in order to reach a certain environmental... of hukou? household registration categorized by urban or rural residency. The following is an overview of the CCP?s distinct urban and rural measurement system and justifies why this measurement is necessary to understand economic and social reform...

  12. A model of stable geomorphic form for an urban stream, College Station, Texas

    E-Print Network [OSTI]

    Woodhouse, Elizabeth Gail

    1988-01-01T23:59:59.000Z

    the transmission of water to the drainage network. Conversely, in urban areas, only a small percentage of rain water can enter the subsurface, with the result that greater quantities of water reach the stream drainage system, arriving shortly after the storm... these processes, frequently to problem levels. In an urban stream system, large volumes of water enter the system within a very short time period, resulting in both high stream velocities and erosion. Extensive erosion in urban areas, especially in areas...

  13. The Anderson Quin Cycle

    SciTech Connect (OSTI)

    Anderson, J.H.; Bilbow, W.M.

    1993-03-18T23:59:59.000Z

    The objective of this study was to make a more refined evaluation of the Anderson Quin Cycle based on most recent information on the performance of various elements that will be used in the Anderson Quin Cycle. My original estimate of the work plan for evaluating and optimizing the Anderson Quin Cycle called for 7000 man hours of work. Since this grant was limited to 2150 man hours, we could not expect to achieve all the objectives within the allotted period of work. However, the most relevant program objectives have been completed as reported here. The analysis generally confirms the results originally estimated in my paper on the subject. (Ref. 2) Further optimizations should show even higher efficiencies. The Anderson Quin Cycle (US Patent applied for) basically consists of 5 elements in the power cycle: A refrigeration system to cool and clean the inlet air before it enters the compressor that supplies air for the gas turbine; a gas turbine consisting of a compressor, combustor, and turbine; a steam boiler and steam turbine system using the heat from the exhaust gas out of the gas turbine; a vapor turbine cycle, which utilizes the condensed heat from the exhaust of the steam turbine and the exhaust gas heat leaving the steam boiler to operate a vapor turbine cycle which utilizes another fluid than water, in this case isobutane; and the fifth element consists of a gas cooler and heat pump system, which removes the heat from the exhaust gas to lower its temperature essentially to atmospheric temperature, and at the same time permits treatment of the exhaust gas to remove acid components such as sulfur dioxide and nitrogen oxides. Current industry accepted component characteristics were incorporated in the performance analysis of the overall cycle, ensuring accurate and meaningful operating predictions. The characteristics and performance of each of the elements are described. The thermal efficiency of the optimized calculated Anderson Quin Cycle is 62 percent.

  14. Groundwater Management and the Cost of Reduced Surface Water Deliveries to Urban Areas: The Case of the Central and West Coast Basins of Southern California

    E-Print Network [OSTI]

    Sunding, David L.; Hamilton, Stephen F; Ajami, Newsha K

    2009-01-01T23:59:59.000Z

    Optimal Management of Groundwater over Space and Time. ”Optimal Control in Groundwater Pumping,” Water ResourcesYear ???? Paper ???? Groundwater Management and the Cost of

  15. A study of a zone approach to IAEA (International Atomic Energy Agency) safeguards: The low-enriched-uranium zone of a light-water-reactor fuel cycle

    SciTech Connect (OSTI)

    Fishbone, L.G.; Higinbotham, W.A.

    1986-06-01T23:59:59.000Z

    At present the IAEA designs its safeguards approach with regard to each type of nuclear facility so that the safeguards activities and effort are essentially the same for a given type and size of nuclear facility wherever it may be located. Conclusions regarding a state are derived by combining the conclusions regarding the effectiveness of safeguards for the individual facilities within a state. In this study it was convenient to define three zones in a state with a closed light-water-reactor nuclear fuel cycle. Each zone contains those facilities or parts thereof which use or process nuclear materials of the same safeguards significance: low-enriched uranium, radioactive spent fuel, or recovered plutonium. The possibility that each zone might be treated as an extended material balance area for safeguards purposes is under investigation. The approach includes defining the relevant features of the facilities in the three zones and listing the safeguards activities which are now practiced. This study has focussed on the fresh-fuel zone, the several facilities of which use or process low-enriched uranium. At one extreme, flows and inventories would be verified at each material balance area. At the other extreme, the flows into and out of the zone and the inventory of the whole zone would be verified. There are a number of possible safeguards approaches which fall between the two extremes. The intention is to develop a rational approach which will make it possible to compare the technical effectiveness and the inspection effort for the facility-oriented approach, for the approach involving the zone as a material balance area, and for some reasonable intermediate safeguards approaches.

  16. Contextualizing urban mobile fabrics

    E-Print Network [OSTI]

    Lin, Michael Chia-Liang

    2007-01-01T23:59:59.000Z

    This thesis is focus on the urban fabric issues. To be more specific, I will focus on the "Mobile Fabrics" within the larger Asian urban context. Instead of working with a specific geographical site; I will focus on the ...

  17. Sources and Fates of Dissolved Organic Carbon in Rural and Urban Watersheds in Brazos County, Texas

    E-Print Network [OSTI]

    Cioce, Danielle

    2012-10-19T23:59:59.000Z

    to frequent exposure to high sodium irrigation water. The results indicate that sodium is a major driver of DOC in the system. Sound management decisions concerning irrigation water chemistry and urban development might eventually emerge to protect water...

  18. Measuring and moderating the water resource impact of biofuel production and trade

    E-Print Network [OSTI]

    Fingerman, Kevin Robert

    2012-01-01T23:59:59.000Z

    consequential  life  cycle   assessment  (LCA). 11   Water  water  life  cycle  assessment  (LCA)   as  they  have  with  Life  Cycle  Assessment  (LCA)  methodologies  could  

  19. Life Cycle Cost Housing Need and Sustainability

    E-Print Network [OSTI]

    Life Cycle Cost Housing Need and Sustainability Abstract: Jordan is actually facing a rapid urban became difficult to sustain especially concerning the slum areas and the environmental pollution due which could contribute to increase the productivity and sustainability taking into consideration

  20. Life-Cycle Analysis Results of Geothermal Systems in Comparison...

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

    & Publications Life-Cycle Analysis Results of Geothermal Systems in Comparison to Other Power Systems Water Use in the Development and Operation of Geothermal Power Plants Water...

  1. Groundwater Management and the Cost of Reduced Surface Water Deliveries to Urban Areas: The Case of the Central and West Coast Basins of Southern California

    E-Print Network [OSTI]

    Sunding, David L.; Hamilton, Stephen F; Ajami, Newsha K

    2009-01-01T23:59:59.000Z

    basin to recover the economic incentives for water trading.Economic incentives for inter-basin transfers arise when thein which the economic incentive to trade implies a movement

  2. Green Roof Water Harvesting and Recycling Effects on Soil and Water Chemistry and Plant Physiology

    E-Print Network [OSTI]

    Laminack, Kirk Dickison

    2014-04-17T23:59:59.000Z

    pressures put on fresh water supplies in urban ecosystems. Alternative irrigation sources can include grey water, sewage effluent (black water) and harvested rainwater which can be a) water captured from an impervious roof and b) stormwater captured from...

  3. Restoration Potential of a Mining-Impacted Urban Stream: Horseshoe Branch of Lion Creek, Oakland, CA

    E-Print Network [OSTI]

    Hackenjos, Bethany; Woelfle-Erskine, Cleo; Wood, Jacob

    2010-01-01T23:59:59.000Z

    Level Biotic Index Score, 0= low, 10= high Horseshoe CreekWater Quality in an Urban Creek Watershed, Oakland, CA. AGUHydraulics. 2010. Codornices Creek Gage: Codornices Creek,

  4. WATER RESOURCES ,'JEBRASKA WATER RESOURCES RESEARCH INSTITUTE

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    of transportation, urban blight, agricultural practices, land use, etc. Water resources problems often result fromWATER RESOURCES ,'JEBRASKA WATER RESOURCES RESEARCH INSTITUTE 212 AGRICULTURAL ENGINEERING BUILDING formulate sound policy without a good deal of knowledge not presently available. Without adequate models

  5. Methodologies for Analyzing Impact of Urbanization on Irrigation Districts

    E-Print Network [OSTI]

    Bonaiti, G.; Fipps, G.

    and structural image information. By overlapping urbanization maps to the water distribution network, we identified critical areas of impact. This impact was expressed as density of network fragments per unit area, or Network Fragmentation Index (NFI). A...

  6. Restoration projects within urban systems frequently encounter

    E-Print Network [OSTI]

    Curran, Joanna C.

    designers to the use of models to predict the discharge associated with bankfull water surface elevation calculated for a given storm event can vary considerably by the use of modeling alone. It is much moreAbstract Restoration projects within urban systems frequently encounter various complexities

  7. Attitudes and perceptions of urban households in sub-Saharan Africa on water sources, threats and sustainability: A study in Bondo, Kenya

    E-Print Network [OSTI]

    Hall, Sharon J.

    , threats and sustainability: A study in Bondo, Kenya Daniel M Nzengya School of Sustainability, Arizona growth is already happening in most of Kenya's cities and towns. In the Lake Victoria region, increasing the danger of water- and sanitation-related diseases. A survey was conducted in Bondo town, Kenya

  8. 8th World Wide Workshop for Young Environmental Scientists WWW-YES 2009: Urban waters: resource or risks? 2-5 June 2009

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to salt under intensive use context Nizar Omrani* *Institute of Arid Regions Medenine (IRA), Tunisia management. These oases observed a lightening development. The improvement in drilling techniques reinforced in the oases, drillings had been multiplied and spread across the oases. The development of the water

  9. 8th World Wide Workshop for Young Environmental Scientists WWW-YES-2008: Urban waters: resource or risks? 13-16 May 2008

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . Keywords water resources; contaminants; pollution; modeling; quality INTRODUCTION In the UK, groundwater or risks? 13-16 May 2008 Measuring groundwater parameters to improve modeling and regulation Alison H accurate groundwater flow models can be created. The results from standard techniques are compared to other

  10. An Improved Stochastic Optimization Model for Water Supply ...

    E-Print Network [OSTI]

    Jonathan De La Vega

    2014-03-09T23:59:59.000Z

    Mar 9, 2014 ... Abstract: This study investigates a pump scheduling problem for the collection, transfer and storage of water in water supply systems in urban ...

  11. Sandia National Laboratories: Water, Energy, and Natural Resource...

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

    Energy, and Natural Resource Systems Water, Energy, and Natural Resource Systems irrigationsiphontubes-usdasm Agricultural water use competes with urban-area...

  12. Water+works : a new ecological infrastructure

    E-Print Network [OSTI]

    Hedstrom, Lisa Kristin

    2011-01-01T23:59:59.000Z

    With the global water crisis as catalyst, Water+Works acts as a model for a localized water initiative that will mitigate flooding and provide a freshwater resource in times of crisis, while enriching urban ecosystems and ...

  13. Institute of Water Research Annual Technical Report

    E-Print Network [OSTI]

    . One project entitled "Decision Support System for Natural Resource Planning" (02) was funded transfer, urban water systems, water quality, water quality management, watershed management, wetlands and research program on the development of environmental information systems for environmental decision making

  14. An Urban Parameterization for a Global Climate Model. Part II: Sensitivity to Input Parameters and the Simulated Urban Heat Island in Offline Simulations

    E-Print Network [OSTI]

    Oleson, Keith W.; Bonan, Gordon B.; Feddema, Johannes J.; Vertenstein, M.

    2008-01-01T23:59:59.000Z

    tempera- tures of urban systems as impervious fraction increases. In general, these findings are in agreement with those observed for real urban ecosystems. Thus, the model appears to be a useful tool for examining the nature of the urban climate within... of the physical processes controlling energy and water fluxes and 2) the charac- terization of urban morphology and urban materials with respect to aerodynamic, radiative, and heat trans- fer properties (e.g., Terjung and O’Rourke 1980; Arn- field 2000; Masson...

  15. Alternative Fuels, Vehicle Technologies and Urban Logistics

    E-Print Network [OSTI]

    Witt, Maggie

    2012-01-01T23:59:59.000Z

    Technologies and Urban Logistics Policy Note prepared byvehicle technologies, urban logistics, and VMT reduction. It

  16. DOE Guidance on the Statutory Definition of Energy/Water Conservation Measures (ECMs), and Determining Life-Cycle Cost-Effectiveness for ESPCs with Multiple or Single ECMs

    Broader source: Energy.gov [DOE]

    Document provides guidance on the statutory definition of "energy conservation measure" (ECM) for the purpose of an energy savings performance contract (ESPC), including clarification that multiple ECMs under the same ESPC may be "bundled" when evaluating life-cycle cost-effectiveness. It also clarifies that an ESPC may include, or be limited to, a single ECM applied across multiple federal buildings and facilities.

  17. Deep Conservation in Urban India and its Implications for the Design of Conservation Technologies

    E-Print Network [OSTI]

    Toronto, University of

    -of-use feedback technologies, modular solutions, distributed energy storage, harnessing by-products and automated and water resources has become an international problem. Urban residential households are among the primary in the developed world. We present a study of energy, water and fuel conservation practices in urban India. Our

  18. DEVELOPMENT OF AN ALGAL BIOSENSOR FOR TOXICITY ASSESSMENT OF URBAN WET WEATHER

    E-Print Network [OSTI]

    Boyer, Edmond

    .ferro@entpe.fr Abstract Stormwater runoff from urban areas generates various pollutants (suspended solids, heavy metals of receiving water bodies (urban streams, ground water). In order to preserve aquatic ecosystems the contamination of these effluents by various compounds: heavy metals, polycyclic aromatic hydrocarbons (PAHs

  19. Be Water Smart 

    E-Print Network [OSTI]

    Swyden, Courtney

    2006-01-01T23:59:59.000Z

    W aterSmart, a water conservation program, uses a unique approach to protect and conserve water quality and quantity in upper Texas Gulf Coast urban landscapes. Part of the Texas Coastal Watershed Program (TCWP), WaterSmart is creating rain... gardens as just one method of demonstrating how water conservation can function in an attractive landscape. In December of 2005, the first demonstration WaterSmart rain garden was established at the Bay Area Courthouse Annex in Clear Lake City...

  20. Be Water Smart

    E-Print Network [OSTI]

    Swyden, Courtney

    2006-01-01T23:59:59.000Z

    W aterSmart, a water conservation program, uses a unique approach to protect and conserve water quality and quantity in upper Texas Gulf Coast urban landscapes. Part of the Texas Coastal Watershed Program (TCWP), WaterSmart is creating rain... gardens as just one method of demonstrating how water conservation can function in an attractive landscape. In December of 2005, the first demonstration WaterSmart rain garden was established at the Bay Area Courthouse Annex in Clear Lake City...

  1. PLANNING FOR WATER CONSERVATION Greater Vancouver Regional District

    E-Print Network [OSTI]

    of the public and private sectors in providing a supply of high quality urban water? Best management practices in urban areas around the globe, yet per capita water consumption continues to increase. Faced with increasing populations and costs associated with urban growth--related to infrastructure, energy, operation

  2. DESCRIPTION OF CYCLES Both a simple cycle and a regenerative cycle were examined; these are described in Fig 1.

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    conditions, some of the water vapor will condense in the indoor coil. It was assumed that the condensate OF ANALYSIS. The principal challenge in the analysis of air cycle with water injection was to devise a simple) which is valid for an ideal gas. To approximate the entropy change of the water vapor, the following

  3. Cycle Track Lessons Learned

    E-Print Network [OSTI]

    Bertini, Robert L.

    Cycle Track Lessons Learned #12;Presentation Overview · Bicycling trends · Cycle track lessons learned · What is a "Cycle track"? · Essential design elements of cycle tracks Separation Width Crossing

  4. Advanced Electrochemical Technologies for Hydrogen Production by Alternative Thermochemical Cycles

    SciTech Connect (OSTI)

    The Pennsylvania State Univeristy: Serguei Lvov, Mike Chung, Mark Fedkin, Victor Balashov, Elena, Chalkova, Nikolay Akinfiev; University of South Carolina: Carol Stork, Thomas Davis, Francis Gadala-Maria, Thomas Stanford, John Weidner; Tulane University: Victor Law, John Prindle; Lewis, ANL: Michele

    2011-01-06T23:59:59.000Z

    Hydrogen fuel is a potentially major solution to the problem of climate change, as well as addressing urban air pollution issues. But a key future challenge for hydrogen as a clean energy carrier is a sustainable, low-cost method of producing it in large capacities. Most of the world�s hydrogen is currently derived from fossil fuels through some type of reforming processes. Nuclear hydrogen production is an emerging and promising alternative to the reforming processes for carbon-free hydrogen production in the future. This report presents the main results of a research program carried out by a NERI Consortium, which consisted of Penn State University (PSU) (lead), University of South Carolina (USC), Tulane University (TU), and Argonne National Laboratory (ANL). Thermochemical water decomposition is an emerging technology for large-scale production of hydrogen. Typically using two or more intermediate compounds, a sequence of chemical and physical processes split water into hydrogen and oxygen, without releasing any pollutants externally to the atmosphere. These intermediate compounds are recycled internally within a closed loop. While previous studies have identified over 200 possible thermochemical cycles, only a few have progressed beyond theoretical calculations to working experimental demonstrations that establish scientific and practical feasibility of the thermochemical processes. The Cu-Cl cycle has a significant advantage over other cycles due to lower temperature requirements - around 530 oC and below. As a result, it can be eventually linked with the Generation IV thermal power stations. Advantages of the Cu-Cl cycle over others include lower operating temperatures, ability to utilize low-grade waste heat to improve energy efficiency, and potentially lower cost materials. Another significant advantage is a relatively low voltage required for the electrochemical step (thus low electricity input). Other advantages include common chemical agents and reactions going to completion without side reactions, and lower demands on materials of construction. Three university research groups from PSU, USC, and TU as well as a group from ANL have been collaborating on the development of enabling technologies for the Cu-Cl cycle, including experimental work on the Cu-Cl cycle reactions, modeling and simulation, and particularly electrochemical reaction for hydrogen production using a CuCl electrolyzer. The Consortium research was distributed over the participants and organized in the following tasks: (1) Development of CuCl electrolyzer (PSU), (2) Thermodynamic modeling of anolyte solution (PSU), (3) Proton conductive membranes for CuCl electrolysis (PSU), (4) Development of an analytical method for online analysis of copper compounds in highly concentrated aqueous solutions (USC), (5) Electrodialysis as a means for separation and purification of the streams exiting the electrolyzer in the Cu-Cl cycle (USC), (6) Development of nanostructured electrocatalysts for the Cu-Cl electrolysis (USC), (7) Cu-Cl electrolyzer modeling (USC), (8) Aspen Plus modeling of the Cu-Cl thermochemical cycle (TU), (9) International coordination of research on the development of the Cu-Cl thermochemical cycle (ANL). The results obtained in the project clearly demonstrate that the Cu-Cl alternative thermochemical cycle is a promising and viable technology to produce hydrogen efficiently.

  5. Water Basins Civil Engineering

    E-Print Network [OSTI]

    Provancher, William

    Water Basins Civil Engineering Objective · Connect the study of water, water cycle, and ecosystems with engineering · Discuss how human impacts can effect our water basins, and how engineers lessen these impacts: · The basic concepts of water basins are why they are important · To use a topographic map · To delineate

  6. Economic costs of conventional surface-water treatment: A case study of the Mcallen northwest facility 

    E-Print Network [OSTI]

    Rogers, Callie Sue

    2009-05-15T23:59:59.000Z

    Conventional water treatment facilities are the norm for producing potable water for U.S. metropolitan areas. Rapidly-growing urban populations, competing demands for water, imperfect water markets, and uncertainty of future water supplies...

  7. Towards sustainable urban communities

    SciTech Connect (OSTI)

    Haapio, Appu, E-mail: appu.haapio@vtt.fi

    2012-01-15T23:59:59.000Z

    Requirements for the assessment tools of buildings have increased, assessing of building components or separate buildings is not enough. Neighbourhoods, built environment, public transportations, and services, should be considered simultaneously. Number of population living in urban areas is high and increasing rapidly. Urbanisation is a major concern due to its detrimental effects on the environment. The aim of this study is to clarify the field of assessment tools for urban communities by analysing the current situation. The focus is on internationally well known assessment tools; BREEAM Communities, CASBEE for Urban Development and LEED for Neigborhood Development. The interest towards certification systems is increasing amongst the authorities, and especially amongst the global investors and property developers. Achieved certifications are expected to bring measureable publicity for the developers. The assessment of urban areas enables the comparison of municipalities and urban areas, and notably supports decision making processes. Authorities, city planners, and designers would benefit most from the use of the tools during the decision making process. - Highlights: Black-Right-Pointing-Pointer The urban assessment tools have strong linkage to the region. Black-Right-Pointing-Pointer The tools promote complementary building and retrofitting existing sites. Black-Right-Pointing-Pointer Sharing knowledge and experiences is important in the development of the tools.

  8. Life Cycle Cost Analysis for Sustainable Buildings

    Broader source: Energy.gov [DOE]

    To help facility managers make sound decisions, FEMP provides guidance and resources on applying life cycle cost analysis (LCCA) to evaluate the cost-effectiveness of energy and water efficiency investments.

  9. Urban Form and Air Pollution in US Urban Areas!

    E-Print Network [OSTI]

    Minnesota, University of

    Urban Form and Air Pollution in US Urban Areas! Center for Transportation Studies Research of Minnesota Grant No. 0853467 #12;Air Pollution Impacts on Health 2 EPA, 2010 Ozone PM2.5 PM10 Lead Nitrogen #12;Purpose and Research Questions 4 Purpose: Explore relationship between air pollution and urban

  10. California's water futures: How water conservation and varying Delta exports affect water supply in the face of climate change

    E-Print Network [OSTI]

    Lund, Jay R.

    i California's water futures: How water conservation and varying Delta exports affect water supply implications of changes in urban water conservation, Delta export capacity, and a dry form of climate warming desalination, and expanded water recycling. Results indicate that, depending on climate and Delta export

  11. Institute of Water Research Annual Technical Report

    E-Print Network [OSTI]

    and ground water protection. One project entitled "Decision Support System for Natural Resource Planning" (02 analysis, technology transfer, urban water systems, water quality, water quality management, watershed) was funded to address these problems and issues. In addition, support for the Institute of Water Research

  12. Receiving Water and Other Impacts Robert Pitt

    E-Print Network [OSTI]

    Pitt, Robert E.

    5-1 Chapter 5 Receiving Water and Other Impacts Robert Pitt Desired Water Uses Versus Stormwater Impacts The main purpose of treating stormwater is to reduce its adverse impacts on receiving water of the detrimental effects that runoff is actually having on a receiving water. Urban receiving waters may have many

  13. Broadening the Statistical Search for Metal Price Super Cycles to Steel and Related Metals

    E-Print Network [OSTI]

    Broadening the Statistical Search for Metal Price Super Cycles to Steel and Related Metals of industrial development and urbanization: steel, pig iron, and molybdenum (a key ingredient in many steel's (2008) econometric search for super cycles in metals prices to our `steel group', defined here as steel

  14. Business Plan for the Healthy Urban Tree Initiative Deeva Green | Davida Heller | Iigo Larraya

    E-Print Network [OSTI]

    involved surveying the current state of urban forests and researching best practices in stewardship, capturing ambient air pollutants and absorbing storm water runoff. The business plan for the Healthy Urban project is the culmination of Columbia University's Master of Science in Sustainability Management

  15. UrbanSolutionsCenter Evaluation of Best Management Practices (BMPs) for Reducing Non-Point

    E-Print Network [OSTI]

    water bodies. · Reduced erosion from agricultural and urban lands will help sustain soil fertilityUrbanSolutionsCenter Evaluation of Best Management Practices (BMPs) for Reducing Non-Point Source of the reservoir cannot be achieved without identifying, testing and implementing appropriate best management

  16. Response of discharge, TSS, and E. coli to rainfall events in urban, suburban, and rural watersheds

    E-Print Network [OSTI]

    Zhang, Minghua

    of the storm-period response of E. coli across an urban and rural gradient, but also lays a foundation of urban development during storm events. Identifying potential factors that affect E. coli concen that the water has been polluted by feces associated with pathogens. Simulation models can play an important role

  17. Urban Ecosystems, 7: 267281, 2004 c 2004 Kluwer Academic Publishers. Manufactured in The Netherlands.

    E-Print Network [OSTI]

    Allan, David

    the quality and utility of urban growth models. Having an empirical basis for making claims about construction. Fine scale design decisions about storm water movement or planting de- sign are unlikelyUrban Ecosystems, 7: 267­281, 2004 c 2004 Kluwer Academic Publishers. Manufactured

  18. Smart Schools: Water Use Efficiency

    E-Print Network [OSTI]

    California at Davis, University of

    reduction ­ Peak shifting #12;One of the first zero net energy communities in the U.S. Includes: o Community buildings with aggressive water conservation: - Water saving alone = 14 years - User Energy = 5 years and energy resources. #12;CA State Policy Momentum · SB7X7 (2010): 20% reduction in urban water use by 2020

  19. Urban Retrofit: A Whole-Watershed Approach to Urban Stormwater Management

    E-Print Network [OSTI]

    Lithander, Becky

    2012-01-01T23:59:59.000Z

    rely  impervious   Derby/Po)er  Creek  Watershed:  Urban  cisterns     Derby/Po)er  Creek  Watershed:  Urban  of  impermeability   Derby/Po)er  Creek  Watershed:  Urban  

  20. The urban coffee shop

    E-Print Network [OSTI]

    Chadios, Konstantinos

    2005-01-01T23:59:59.000Z

    This thesis is an investigation of the role of the coffee shop in the urban environment throughout history. Coffee shops spread from the Arab world to Europe and then to the U.S. at the end of the seventeenth century. ...

  1. Roadmap for sustainable water resources in southwestern North America

    E-Print Network [OSTI]

    Lachniet, Matthew S.

    water and remove wastewater. These systems have permitted agricultural production and urban technologies and management systems tobring adequatewaterandremove wastewater. Agricultural production has

  2. Water resources planning under climate change and variability

    E-Print Network [OSTI]

    O'Hara, Jeffrey Keith

    2007-01-01T23:59:59.000Z

    transfers or options. Demand-side management includes thepricing schemes, and demand-side management for urban water,of alternate demand side management, particularly

  3. Proceedings: Sixth International Conference on Fossil Plant Cycle Chemistry

    SciTech Connect (OSTI)

    None

    2001-04-01T23:59:59.000Z

    The purity of boiler water, feedwater, and steam is central to ensuring component availability and reliability in fossil-fired plants. These conference proceedings address the state of the art in fossil plant and combined cycle/heat recovery steam generator (HRSG) cycle chemistry as well as international practices for control of corrosion and water preparation and purification.

  4. Finding home : making a place for the homeless in the urban landscape

    E-Print Network [OSTI]

    Cheng, Marissa A

    2007-01-01T23:59:59.000Z

    Is homelessness a problem? What if you considered homelessness to be a state, rather than a problem, and provided for it accordingly in the urban landscape? As roads and water and sewer lines are one type of infrastructure, ...

  5. Abundance and Distribution of Africanized Honey Bees in an Urban Environments

    E-Print Network [OSTI]

    Chen, Szu-Hung

    2013-01-18T23:59:59.000Z

    , and AHB population dynamics. The goal of my dissertation was to understand population dynamics of AHB in urban environments using removal records of AHB colonies in water meter boxes. I have demonstrated useful methods and repeatable procedures to process...

  6. Urban Hydrology: theory and new approaches for stormwater

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    management practices and strategies. "water is a precious resource, keep it here, clean it, save it for laterUrban Hydrology: theory and new approaches for stormwater management Jack Ahern, Professor Dept source(s), and infiltrating as much as possible into the soil through the implementation of best

  7. Kiran Chandra Sapkota Livelihood strategies and vulnerability of urban poor

    E-Print Network [OSTI]

    Richner, Heinz

    management of drinking water. 97.7 percent HHs have got the electricity and entertainment facilities, electric charge, etc. This study has tried to show five capital assets of urban poor in Khadi Pakha in local social institution but not represented in local government. Above 95 percent HHs involved

  8. Roads to Development: Experimental Evidence from Urban Road Pavement

    E-Print Network [OSTI]

    Silver, Whendee

    Roads to Development: Experimental Evidence from Urban Road Pavement Marco Gonzalez-Navarro UC peripheries in many developing country cities lack basic local public goods like pavement, water, sewerage pavement provision in Mexico. Our findings show that homes in streets that were paved increased their value

  9. REVIEW OF METHODS TO REDUCE URBAN STORMWATER LOADS

    E-Print Network [OSTI]

    , the implementation of Best Management Practices (BMPs) capable of controlling or removing Hg and PCBs from urban for preliminary prioritization of best management practices (BMPs) (Section 5). Section 3: Describes areas and storm water, measurements of loads in stormwater, and demonstration that either loads

  10. Adapting Urban Infrastructure to Climate Change: A Drainage Case Study

    E-Print Network [OSTI]

    Vogel, Richard M.

    models (GCM) to determine changes in the amount of precipitation for the 20-year, 24-h storm- cipitation magnitude and intensity, associated increases in runoff, storm water discharges, and floodingAdapting Urban Infrastructure to Climate Change: A Drainage Case Study Paul Kirshen, M.ASCE1

  11. Sources and transport of nitrogen in arid urban watersheds

    SciTech Connect (OSTI)

    Hale, Rebecca L.; Turnbull, Laura; Earl, Stevan; Grimm, Nancy B.; Riha, Krystin M.; Michalski, Greg; Lohse, Kathleen; Childers, Daniel L.

    2014-06-03T23:59:59.000Z

    Urban watersheds are often sources of nitrogen (N) to downstream systems, contributing to poor water quality. However, it is unknown which components (e.g., land cover and stormwater infrastructure type) of urban watersheds contribute to N export and which may be sites of retention. In this study we investigated which watershed characteristics control N sourcing, biogeochemical processing of nitrate (NO3–) during storms, and the amount of rainfall N that is retained within urban watersheds. We used triple isotopes of NO3– (?15N, ?18O, and ?17O) to identify sources and transformations of NO3– during storms from 10 nested arid urban watersheds that varied in stormwater infrastructure type and drainage area. Stormwater infrastructure and land cover—retention basins, pipes, and grass cover—dictated the sourcing of NO3– in runoff. Urban watersheds can be strong sinks or sources of N to stormwater depending on the proportion of rainfall that leaves the watershed as runoff, but we found no evidence that denitrification occurred during storms. Our results suggest that watershed characteristics control the sources and transport of inorganic N in urban stormwater but that retention of inorganic N at the timescale of individual runoff events is controlled by hydrologic, rather than biogeochemical, mechanisms.

  12. Carbon Dioxide Reduction Through Urban Forestry

    E-Print Network [OSTI]

    Standiford, Richard B.

    . Retrieval Terms: urban forestry, carbon dioxide, sequestration, avoided energy The Authors E. Gregory McCarbon Dioxide Reduction Through Urban Forestry: Guidelines for Professional and Volunteer Tree; Simpson, James R. 1999. Carbon dioxide reduction through urban forestry

  13. Water Resources Milind Sohoni

    E-Print Network [OSTI]

    Sohoni, Milind

    -photosynthesis, energy transfer in animals, and so on. Life as we know it is water-centric (and organic carbon 20, 2012 6 / 17 #12;Water availability Total renewable (defined using the water cycle) per-capita, per year. Country cu. m. Congo 275,000 Canada 94,000 Brazil 48,000 Mongolia, Indonesia 13,000 Japan

  14. Edgeworth cycles revisited

    E-Print Network [OSTI]

    Doyle, Joseph J.

    Some gasoline markets exhibit remarkable price cycles, where price spikes are followed by a series of small price declines: a pattern consistent with a model of Edgeworth cycles described by Maskin and Tirole. We extend ...

  15. Urban Commerce and Security Study Urban Commerce and Security Study

    E-Print Network [OSTI]

    Urban Commerce and Security Study Urban Commerce and Security Study Contact Information Fred S. Roberts Research Sponsor: Department of Homeland Security Rutgers University/CCICADA Center Professor.S. Department of Homeland Security, under Agreement 2009-ST-061-CCI002-02. Any opinions, findings

  16. UrbanSolutionsCenter Urban Uses for Dairy Manure Compost

    E-Print Network [OSTI]

    UrbanSolutionsCenter Urban Uses for Dairy Manure Compost Background Construction of new homes with time and with heat and drought stress. Dairy manure compost (DMC) is readily available for amending regulatory agencies are developing mechanisms for using composted dairy manure to remedy disturbed soils

  17. Escherichia coli Regrowth and Macroinvertebrate Health in Urban and Rural Streams

    E-Print Network [OSTI]

    McCrary, Kathryn Jordan

    2012-07-16T23:59:59.000Z

    Waste Water Treatment plant, College Station TX, for helping me navigate the plant. I would like to thank Nina Stanley for her help with the chemical analyses in the nutrient and water analysis laboratory and Heidi Mjelde for help with E. coli.... Urbanization has been identified as one of the biggest causes of impairment to our water bodies (Paul and Meyer 2001). The water quality in streams and rivers in many urban watersheds is so impaired that it has major consequences for downstream reaches...

  18. Sandia National Laboratories: the water cycle

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

    to address the most challenging and demanding climate-change issues. Accelerated Climate Modeling for Energy (ACME) is designed to accel-erate the development and applica-tion of...

  19. LifeCycle Water Consumption of

    E-Print Network [OSTI]

    Keller, Arturo A.

    ­ LCAbased policies ­ CA LCFS 3. But a good GHG LCA does not a responsible product make "Sustainability Heat loss into soil "Vapor pressure deficit" Solar radiation Wind speed Constant related to humidity

  20. A Blueprint for Urban Sustainability: Integrating Sustainable...

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

    A Blueprint for Urban Sustainability: Integrating Sustainable Energy Practices into Metropolitan Planning, May 2004 A Blueprint for Urban Sustainability: Integrating Sustainable...

  1. Urban Atmospheres captures a unique, synergistic moment

    E-Print Network [OSTI]

    Paulos, Eric

    Urban Atmospheres captures a unique, synergistic moment ­ expanding urban populations, rapid EDITORS Eric Paulos Intel Research eric@paulos.net Tom Jenkins Royal College of Art thomas

  2. Urban Enterprise Zone Program (New Jersey)

    Broader source: Energy.gov [DOE]

    New Jersey's Urban Enterprise (UEZ) Program operates under the Department of Community Affairs. The UEZ Program exists to foster an economic climate that revitalizes designated urban communities...

  3. Urban Hopper Program

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrinceton PlasmaAfternoon4. Uranium purchasedUrban Hopper Program As

  4. Urban Ecosystem Design Bedrich Benes

    E-Print Network [OSTI]

    Aliaga, Daniel G.

    Urban Ecosystem Design Bedrich Benes Michel Abdul Massih Philip Jarvis Purdue University Daniel G. Aliaga Carlos A. Vanegas a) b) c) Figure 1: This example demonstrates the need for urban ecosystems. The image in a) shows a terrain occupied by a wild ecosystem and b) displays the same ecosystem grown over

  5. Phoenix-UrbanNon-Sacramentorural.

    E-Print Network [OSTI]

    Hall, Sharon J.

    the ecosystem has yet to be fully constructed. Goals 1. To understand the drivers of carbon dynamics in urban. Vegetation (Trees and Shrubs) Storage and NPP Tree and Shrub Total NPP: 172 Gg C / Year Tree and Shrub Total on a per area basis, but there is more storage in trees and less in shrubs · NPP in urban mesic plots

  6. Cycle to Cycle Manufacturing Process Control

    E-Print Network [OSTI]

    Hardt, David E.

    Most manufacturing processes produce parts that can only be correctly measured after the process cycle has been completed. Even if in-process measurement and control is possible, it is often too expensive or complex to ...

  7. Artificial nature : water infrastructure and its experience as natural space

    E-Print Network [OSTI]

    Demirta?, Fatma Asl?han, 1970-

    2000-01-01T23:59:59.000Z

    This work is about water infrastructure and its experience as urban and natural space. It deals with the concepts of nature/geography, technology, and the integral experiential space by analyzing water dams and reservoirs ...

  8. Modeling the water consumption of Singapore using system dynamics

    E-Print Network [OSTI]

    Welling, Karen Noiva

    2011-01-01T23:59:59.000Z

    Water resources are essential to life, and in urban areas, the high demand density and finite local resources often engender conditions of relative water scarcity. To overcome this scarcity, governments intensify infrastructure ...

  9. Constant power cycling for accelerated ageing of supercapacitors Kreczanik Paul, Martin Christian, Venet Pascal, Clerc Guy, Rojat Gerard, Zitouni Younes

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Constant power cycling for accelerated ageing of supercapacitors Kreczanik Paul, Martin Christian the competitive pole (Lyon Urban Truck and Bus 2015). Keywords «Supercapacitor», «Power cycling», «Lifetime», «Accelerated ageing», «Ageing law» Abstract This paper deals with the lifetime of supercapacitors used

  10. Optimization of Cooling Water

    E-Print Network [OSTI]

    Matson, J.

    A cooling water system can be optimized by operation at the highest possible cycles of concentration without risking sealing and fouling on heat exchanger surfaces. The way to optimize will be shown, with a number of examples of new systems....

  11. Home Consumer Perceptions about Landscape Water Conservation and Relationships with Historical Usage 

    E-Print Network [OSTI]

    Milberger, Whitney F.

    2010-07-14T23:59:59.000Z

    Water is considered to be one of the most limited and precious resources on Earth. Due to this scarcity, water conservation has become essential in order to preserve water resources. Landscape plant material brings quality to urban and suburban...

  12. Home Consumer Perceptions about Landscape Water Conservation and Relationships with Historical Usage

    E-Print Network [OSTI]

    Milberger, Whitney F.

    2010-07-14T23:59:59.000Z

    Water is considered to be one of the most limited and precious resources on Earth. Due to this scarcity, water conservation has become essential in order to preserve water resources. Landscape plant material brings quality to urban and suburban...

  13. Cultural Waters: Values of Water Resources in Hidalgo, Mexico

    E-Print Network [OSTI]

    Hurst, Kristin

    2013-04-08T23:59:59.000Z

    The availability of clean water is fundamental to the survival of all living things. Humans have altered fresh water cycles in a number of ways that affect both water quality and quantity. This has led to a global water crisis where an estimated...

  14. Think water : reconditioning the Malden River

    E-Print Network [OSTI]

    Oda, Kazuyo, 1969-

    2003-01-01T23:59:59.000Z

    The purpose of this thesis is to link water, history and culture through architectural and urban design by researching the potential for the rejuvenation of a neglected industrial site at the edge of a river. The Malden ...

  15. CHRISTOPHER A. SCOTT Professor Research Professor, Water Resources Policy

    E-Print Network [OSTI]

    OF EXPERTISE AND RESEARCH INTERESTS · Resilience, adaptation, social-ecological systems · Water-energy nexus-urban water transfers · Transboundary river basins and aquifers · Mountain water towers, Andes, Himalayas on water resources and policy, human-environment interactions, the water-energy nexus, and climate

  16. D.C. Water Resources Research Institute Annual Technical Report

    E-Print Network [OSTI]

    projects that address the three components of integrated urban water system: storm water runoff and sewer developing and maintaining new environmental quality testing and modeling tools to advance water researchD.C. Water Resources Research Institute Annual Technical Report FY 2013 D.C. Water Resources

  17. Sandia Energy - Consortium for Advanced Simulation of Light Water...

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

    Consortium for Advanced Simulation of Light Water Reactors (CASL) Home Stationary Power Nuclear Fuel Cycle Advanced Nuclear Energy Consortium for Advanced Simulation of Light Water...

  18. atmospheric precipitable water: Topics by E-print Network

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

    Websites Summary: a crucial role in Earth's energy and water cycles through absorbing solar and infrared radiation, releasing latent heat, transporting water, and forming...

  19. Water Use in the Development and Operation of Geothermal Power...

    Energy Savers [EERE]

    Operation of Geothermal Power Plants Water Use in the Development and Operation of Geothermal Power Plants This report summarizes what is currently known about the life cycle water...

  20. Storm Water Management through Infiltration Trenches1 Bhagu R. Chahar1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . An infiltration trench alone or in combination with other storm10 water management practice is a key element and the drain time of trench, which is a key15 parameter in operation of storm water management practice systems (SUDS), water sensitive38 urban design (WSUD), best management practices (BMP) or low impact urban

  1. Low chemical concentrating steam generating cycle

    DOE Patents [OSTI]

    Mangus, James D. (Greensburg, PA)

    1983-01-01T23:59:59.000Z

    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.

  2. Introduction Global demand for drinking water

    E-Print Network [OSTI]

    Hall, Sharon J.

    of water quality perceptions, consumption behavior, and demographics, adapted from Decision Center.bridgeandtunnelclub.com/bigmap/outoftown/arizona/phoenix/publicmarket/index.htm The urban social-ecological system contains both drivers and responses to these environmental changes and Bottled Water Consumption Discussion We found that non-whites report lower water quality, which supports

  3. Stirling-cycle refrigerator

    SciTech Connect (OSTI)

    Nakamura, K.

    1985-06-11T23:59:59.000Z

    A Stirling-cycle refrigerator comprises a plurality of Stirling-cycle refrigerator units each having a displacer defining an expansion chamber, a piston defining a compression chamber, and a circuit including a heater and a cooler and interconnecting the expansion chamber and the compression chamber, and a heat exchanger shared by the circuits and disposed between the coolers and the heaters for effecting heat exchange between working gases in the circuits. The heat exchanger may comprise a countercurrent heat exchanger, and the Stirling-cycle refrigerator units are operated in cycles which are 180/sup 0/ out of phase with each other.

  4. Implementing an agricultural water conservation innovation among the urban public: an analysis of the pilot study phase of the San Antonio Evapotranspiration Project--a cooperative effort between the Texas Agricultural Extension Service--Bexar County Offices, Bexar County Master Gardeners, San Antonio Water Systems and Texas A&M University

    E-Print Network [OSTI]

    Reilly, Laura Lynne

    1998-01-01T23:59:59.000Z

    rural agronomic problem, is being put to use in a creative manner in an urban setting. This innovation, first used to determine-nine accurate soil moisture need for semi-arid land crops, is potential-evapotranspiration (PET) data based irrigation...

  5. A decision-support system for sustainable urban metabolism in Europe

    SciTech Connect (OSTI)

    Gonzalez, Ainhoa, E-mail: ainhoag@yahoo.com [Trinity Centre for Biodiversity Research, School of Natural Sciences, Trinity College Dublin, College Green, Dublin 2 (Ireland); Donnelly, Alison, E-mail: donnelac@tcd.ie [Centre for the Environment, School of Natural Sciences, Trinity College Dublin (Ireland); Jones, Mike, E-mail: mike.jones@tcd.ie [Discipline of Botany, School of Natural Sciences, Trinity College Dublin (Ireland); Chrysoulakis, Nektarios, E-mail: zedd2@iacm.forth.gr [Foundation for Research and Technology-Hellas, Institute of Applied and Computational Mathematics (Greece); Lopes, Myriam, E-mail: myr@ua.pt [Departamento de Ambiente e Ordenamento and CESAM, University of Aveiro (Portugal)

    2013-01-15T23:59:59.000Z

    Urban metabolism components define the energy and material exchanges within a city and, therefore, can provide valuable information on the environmental quality of urban areas. Assessing the potential impact of urban planning alternatives on urban metabolism components (such as energy, water, carbon and pollutants fluxes) can provide a quantitative estimation of their sustainability performance. Urban metabolism impact assessment can, therefore, contribute to the identification of sustainable urban structures with regards, for example, to building types, materials and layout, as well as to location and capacity of transportation and infrastructural developments. In this way, it enables the formulation of planning and policy recommendations to promote efficient use of resources and enhance environmental quality in urban areas. The European FP7 project BRIDGE (sustainaBle uRban plannIng Decision support accountinG for urban mEtabolism) has developed a decision-support system (DSS) that systematically integrates urban metabolism components into impact assessment processes with the aim of accurately quantifying the potential effects of proposed planning interventions. The DSS enables integration of multiple spatial and non-spatial datasets (e.g. physical flows of energy and material with variables of social and economic change) in a systematic manner to obtain spatially defined assessment results and to thus inform planners and decision-makers. This multi-criteria approach also enables incorporation of stakeholders' perceptions in order to prioritise decisive assessment criteria. This paper describes the methodological framework used to develop the DSS and critically examines the results of its practical application in five European cities. - Highlights: Black-Right-Pointing-Pointer Urban metabolism in sustainability assessment of planning alternatives. Black-Right-Pointing-Pointer European FP7 project applied to 5 real life case studies across Europe. Black-Right-Pointing-Pointer Decision support system enables incorporating scientific knowledge into planning. Black-Right-Pointing-Pointer Scale, data availability and stakeholder representativeness limit its application.

  6. A Hydrometeorological Study Related to the Distribution of Precipitation and Runoff over Small Drainage Basins -- Urban Versus Rural Areas

    E-Print Network [OSTI]

    Feddes, R. G.; Clark, R.A.; Runnels, R. C.

    TR-28 1970 A Hydrometeorological Study Related to the Distribution of Precipitation and Runoff over Small Drainage Basins?Urban Versus Rural Areas R.G. Feddes R.A. Clark R.C. Runnels Texas Water...

  7. Urban and peri-urban agriculture and its zoonotic risks in Kampala, Uganda 

    E-Print Network [OSTI]

    Makita, Kohei

    2009-11-25T23:59:59.000Z

    In developing countries, cities are rapidly expanding, and urban and peri-urban agriculture (UPA) has an important role in feeding a growing urban population. However, UPA carries risks of zoonotic disease transmission. ...

  8. Arizona has relatively limited water resources due to its arid climate and limited surface water.

    E-Print Network [OSTI]

    Fay, Noah

    CYCLE 2007 PROJECT GOALS The goal of this project was to evaluate the life cycle water consumption have begun to spur the development of alternatives to our current petroleum based transportation system these technologies with a broad lens and ensure that they will not introduce PROJECT FACT SHEET Life Cycle Water

  9. Research and Extension Education Capabilities AgriLife Urban Solutions Center and associated County Extension Programs

    E-Print Network [OSTI]

    · Irrigation system design and management · Rainwater harvesting, rain gardens, porous pavements, green roofsWise, Texas SmartScape® landscapes · Use and management of alternate (reclaimed, recycled, poor quality Extension Programs Water Management for Urban Landscapes · Lawn and landscape water conservation

  10. URBAN EXTENTS Bosnia-Herzego

    E-Print Network [OSTI]

    Columbia University

    URBAN EXTENTS Bosnia-Herzego Switzerland Czech Republic Germany Croatia Hungary Poland Slovakia. Adriatic Sea Bosnia- Herzegovina This document is licensed under a Creative Commons 3.0 Attribution License

  11. Urbanization, Agglomeration, and Economic Development

    E-Print Network [OSTI]

    Quigley, John M.

    2008-01-01T23:59:59.000Z

    94 (3): 656–90. Quigley, John M. 1998. “Urban Diversity andItaly, July 3. John M. Quigley GCU_04pp115-132.indd 129wasn’t fully legible

  12. Urban Reclamation in São Paulo

    E-Print Network [OSTI]

    Eskinazi, Victor

    2009-01-01T23:59:59.000Z

    The urbanized terrain of São Paulo is characterized by wasteful landscapes on peripheral areas of the metropolitan agglomeration, and decaying landscapes of waste in the core of the city. If on the one hand, the increasingly ...

  13. Analysis of large urban fires

    SciTech Connect (OSTI)

    Kang, S.W.; Reitter, T.A.; Takata, A.N.

    1984-11-01T23:59:59.000Z

    Fires in urban areas caused by a nuclear burst are analyzed as a first step towards determining their smoke-generation chacteristics, which may have grave implications for global-scale climatic consequences. A chain of events and their component processes which would follow a nuclear attack are described. A numerical code is currently being developed to calculate ultimately the smoke production rate for a given attack scenario. Available models for most of the processes are incorporated into the code. Sample calculations of urban fire-development history performed in the code for an idealized uniform city are presented. Preliminary results indicate the importance of the wind, thermal radiation transmission, fuel distributions, and ignition thresholds on the urban fire spread characteristics. Future plans are to improve the existing models and develop new ones to characterize smoke production from large urban fires. 21 references, 18 figures.

  14. Urban Microclimate, a Study of Energy Balance and Fluid Dynamics /

    E-Print Network [OSTI]

    Yaghoobian, Neda

    2013-01-01T23:59:59.000Z

    The International Urban Energy Balance Models ComparisonT. Williamson, Urban surface energy balance models: modelof the international urban energy balance model comparison,

  15. The nitrogen cycle and ecohydrology of seasonally dry grasslands

    E-Print Network [OSTI]

    Parolari, Anthony Joseph

    2013-01-01T23:59:59.000Z

    This thesis addresses the coupling of hydrologic and biogeochemical processes and, specifically, the organization of ecosystem traits with the water, carbon, and nitrogen cycles. Observations from a factorial irrigation- ...

  16. assisting apprenticeship cycles: Topics by E-print Network

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

    all that apply New Hampshire, University of 16 Performance study on solar assisted heat pump water heater using CO2 in a transcritical cycle CiteSeer Summary: Abstract: This...

  17. assisted reproduction cycles: Topics by E-print Network

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

    is equipotent Paris-Sud XI, Universit de 25 Performance study on solar assisted heat pump water heater using CO2 in a transcritical cycle CiteSeer Summary: Abstract: This...

  18. Power Plant Cycling Costs

    SciTech Connect (OSTI)

    Kumar, N.; Besuner, P.; Lefton, S.; Agan, D.; Hilleman, D.

    2012-07-01T23:59:59.000Z

    This report provides a detailed review of the most up to date data available on power plant cycling costs. The primary objective of this report is to increase awareness of power plant cycling cost, the use of these costs in renewable integration studies and to stimulate debate between policymakers, system dispatchers, plant personnel and power utilities.

  19. Life Cycle Cost Estimate

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

    1997-03-28T23:59:59.000Z

    Life-cycle costs (LCCs) are all the anticipated costs associated with a project or program alternative throughout its life. This includes costs from pre-operations through operations or to the end of the alternative.This chapter discusses life cycle costs and the role they play in planning.

  20. FUEL CYCLE POTENTIAL WASTE FOR DISPOSITION

    SciTech Connect (OSTI)

    Carter, J.

    2011-01-03T23:59:59.000Z

    The United States (U.S.) currently utilizes a once-through fuel cycle where used nuclear fuel (UNF) is stored on-site in either wet pools or in dry storage systems with ultimate disposal in a deep mined geologic repository envisioned. Within the Department of Energy's (DOE) Office of Nuclear Energy (DOE-NE), the Fuel Cycle Research and Development Program (FCR&D) develops options to the current commercial fuel cycle management strategy to enable the safe, secure, economic, and sustainable expansion of nuclear energy while minimizing proliferation risks by conducting research and development of advanced fuel cycles, including modified open and closed cycles. The safe management and disposition of used nuclear fuel and/or nuclear waste is a fundamental aspect of any nuclear fuel cycle. Yet, the routine disposal of used nuclear fuel and radioactive waste remains problematic. Advanced fuel cycles will generate different quantities and forms of waste than the current LWR fleet. This study analyzes the quantities and characteristics of potential waste forms including differing waste matrices, as a function of a variety of potential fuel cycle alternatives including: (1) Commercial UNF generated by uranium fuel light water reactors (LWR). Four once through fuel cycles analyzed in this study differ by varying the assumed expansion/contraction of nuclear power in the U.S. (2) Four alternative LWR used fuel recycling processes analyzed differ in the reprocessing method (aqueous vs. electro-chemical), complexity (Pu only or full transuranic (TRU) recovery) and waste forms generated. (3) Used Mixed Oxide (MOX) fuel derived from the recovered Pu utilizing a single reactor pass. (4) Potential waste forms generated by the reprocessing of fuels derived from recovered TRU utilizing multiple reactor passes.

  1. FUEL CYCLE POTENTIAL WASTE FOR DISPOSITION

    SciTech Connect (OSTI)

    Jones, R.; Carter, J.

    2010-10-13T23:59:59.000Z

    The United States (U.S.) currently utilizes a once-through fuel cycle where used nuclear fuel (UNF) is stored on-site in either wet pools or in dry storage systems with ultimate disposal in a deep mined geologic repository envisioned. Within the Department of Energy's (DOE) Office of Nuclear Energy (DOE-NE), the Fuel Cycle Research and Development Program (FCR&D) develops options to the current commercial fuel cycle management strategy to enable the safe, secure, economic, and sustainable expansion of nuclear energy while minimizing proliferation risks by conducting research and development of advanced fuel cycles, including modified open and closed cycles. The safe management and disposition of used nuclear fuel and/or nuclear waste is a fundamental aspect of any nuclear fuel cycle. Yet, the routine disposal of used nuclear fuel and radioactive waste remains problematic. Advanced fuel cycles will generate different quantities and forms of waste than the current LWR fleet. This study analyzes the quantities and characteristics of potential waste forms including differing waste matrices, as a function of a variety of potential fuel cycle alternatives including: (1) Commercial UNF generated by uranium fuel light water reactors (LWR). Four once through fuel cycles analyzed in this study differ by varying the assumed expansion/contraction of nuclear power in the U.S; (2) Four alternative LWR used fuel recycling processes analyzed differ in the reprocessing method (aqueous vs. electro-chemical), complexity (Pu only or full transuranic (TRU) recovery) and waste forms generated; (3) Used Mixed Oxide (MOX) fuel derived from the recovered Pu utilizing a single reactor pass; and (4) Potential waste forms generated by the reprocessing of fuels derived from recovered TRU utilizing multiple reactor passes.

  2. The Anderson Quin Cycle. Final report

    SciTech Connect (OSTI)

    Anderson, J.H.; Bilbow, W.M.

    1993-03-18T23:59:59.000Z

    The objective of this study was to make a more refined evaluation of the Anderson Quin Cycle based on most recent information on the performance of various elements that will be used in the Anderson Quin Cycle. My original estimate of the work plan for evaluating and optimizing the Anderson Quin Cycle called for 7000 man hours of work. Since this grant was limited to 2150 man hours, we could not expect to achieve all the objectives within the allotted period of work. However, the most relevant program objectives have been completed as reported here. The analysis generally confirms the results originally estimated in my paper on the subject. (Ref. 2) Further optimizations should show even higher efficiencies. The Anderson Quin Cycle (US Patent applied for) basically consists of 5 elements in the power cycle: A refrigeration system to cool and clean the inlet air before it enters the compressor that supplies air for the gas turbine; a gas turbine consisting of a compressor, combustor, and turbine; a steam boiler and steam turbine system using the heat from the exhaust gas out of the gas turbine; a vapor turbine cycle, which utilizes the condensed heat from the exhaust of the steam turbine and the exhaust gas heat leaving the steam boiler to operate a vapor turbine cycle which utilizes another fluid than water, in this case isobutane; and the fifth element consists of a gas cooler and heat pump system, which removes the heat from the exhaust gas to lower its temperature essentially to atmospheric temperature, and at the same time permits treatment of the exhaust gas to remove acid components such as sulfur dioxide and nitrogen oxides. Current industry accepted component characteristics were incorporated in the performance analysis of the overall cycle, ensuring accurate and meaningful operating predictions. The characteristics and performance of each of the elements are described. The thermal efficiency of the optimized calculated Anderson Quin Cycle is 62 percent.

  3. Annual Simulation Results for an Air-Cooled Binary Power Cycle Employing Flash Cooling Enhancement

    SciTech Connect (OSTI)

    Buys, A.; Gladden, C.; Kutscher, C.

    2006-01-01T23:59:59.000Z

    Objective is to perform detailed simulation of air cooled cycle with flash supplied cooling water using two types of evaporative enhancement, spray nozzels and evaporative media.

  4. Response Surface Energy Modeling of an Electric Vehicle over a Reduced Composite Drive Cycle

    SciTech Connect (OSTI)

    Jehlik, Forrest [Argonne National Laboratory (ANL)] [Argonne National Laboratory (ANL); LaClair, Tim J [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    Response surface methodology (RSM) techniques were applied to develop a predictive model of electric vehicle (EV) energy consumption over the Environmental Protection Agency's (EPA) standardized drive cycles. The model is based on measurements from a synthetic composite drive cycle. The synthetic drive cycle is a minimized statistical composite of the standardized urban (UDDS), highway (HWFET), and US06 cycles. The composite synthetic drive cycle is 20 minutes in length thereby reducing testing time of the three standard EPA cycles by over 55%. Vehicle speed and acceleration were used as model inputs for a third order least squared regression model predicting vehicle battery power output as a function of the drive cycle. The approach reduced three cycles and 46 minutes of drive time to a single test of 20 minutes. Application of response surface modeling to the synthetic drive cycle is shown to predict energy consumption of the three EPA cycles within 2.6% of the actual measured values. Additionally, the response model may be used to predict energy consumption of any cycle within the speed/acceleration envelope of the synthetic cycle. This technique results in reducing test time, which additionally provides a model that may be used to expand the analysis and understanding of the vehicle under consideration.

  5. Parameterization of Urban Characteristics for Global Climate Modeling

    E-Print Network [OSTI]

    Jackson, Trisha L.

    2011-10-31T23:59:59.000Z

    of varying scales and effects of climate change on urban populations, urbanization must be included in global climate models (GCMs). To properly capture the spatial variability in urban areas, GCMs require global databases of urban extent and characteristics...

  6. Industrial Heat Recovery with Organic Rankine Cycles

    E-Print Network [OSTI]

    Hnat, J. G.; Patten, J. S.; Cutting, J. C.; Bartone, L. M.

    1982-01-01T23:59:59.000Z

    to examine a specific application of the use of an ORC heat recovery system and compare it to a stear), Rankine cycle heat recovery system. The particular application ~ssumed is heat recovery from diesel engine exhaust gas at a temPErature of 700F. Figure...,vaporized and superheated ina flue gas heat recovery su bsystem. he super heated fluid is expanded through a turbine for power p oduction, condensed in a water cooled condenser and return d to the vaporizer via feed pu mps. In the steam cycle, a port n of the Figure 1...

  7. Essays on rural-urban migration in hinterland China

    E-Print Network [OSTI]

    Meng, Lei

    2009-01-01T23:59:59.000Z

    Marriage Rates in Rural China . . . . . . . . . . .Urban Migration in Hinterland China . . . . . . . . . .and Rural-Urban Migration in Hinterland China . . . . . 1.

  8. Sustainable Urban Development: A Literature Review and Analysis

    E-Print Network [OSTI]

    Wheeler, Stephen

    1996-01-01T23:59:59.000Z

    Towards Sustainable Development and Sustainable Urban Forms,Sustainable Urban Development Sustainable Seattle Indicatorseds. , Making Development Sustainable: From Concepts to

  9. A window on urban sustainability

    SciTech Connect (OSTI)

    Stigt, Rien van, E-mail: rien.vanstigt@hu.nl [Research Center for Technology and Innovation, Utrecht University of Applied Sciences, P.O. Box 182, 3500 AD Utrecht (Netherlands); Driessen, Peter P.J., E-mail: p.driessen@uu.nl [Copernicus Institute of Sustainable Development, Faculty of Geosciences, Utrecht University, P.O. Box 80.115, 3508 TC Utrecht (Netherlands); Spit, Tejo J.M., E-mail: T.J.M.Spit@uu.nl [Department of Human Geography and Spatial Planning, Faculty of Geosciences, Utrecht University, P.O. Box 80.115, 3508 TC Utrecht (Netherlands)

    2013-09-15T23:59:59.000Z

    Sustainable urban development requires the integration of environmental interests in urban planning. Although various methods of environmental assessment have been developed, plan outcomes are often disappointing due to the complex nature of decision-making in urban planning, which takes place in multiple arenas within multiple policy networks involving diverse stakeholders. We argue that the concept of ‘decision windows’ can structure this seemingly chaotic chain of interrelated decisions. First, explicitly considering the dynamics of the decision-making process, we further conceptualized decision windows as moments in an intricate web of substantively connected deliberative processes where issues are reframed within a decision-making arena, and interests may be linked within and across arenas. Adopting this perspective in two case studies, we then explored how decision windows arise, which factors determine their effectiveness and how their occurrence can be influenced so as to arrive at more sustainable solutions. We conclude that the integration of environmental interests in urban planning is highly dependent on the ability of the professionals involved to recognize and manipulate decision windows. Finally, we explore how decision windows may be opened. -- Highlights: • Decision-making about sustainable urban development occurs in networks. • The concept of ‘decision windows’ was further elaborated. • Decision windows help understand how environmental interests enter decision-making. • Decision windows can, to some extent, be influenced.

  10. Water Supply Analysis for Restoring the Colorado River Delta, Mexico

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    Water Supply Analysis for Restoring the Colorado River Delta, Mexico Josué Medellín-Azuara1 ; Jay R, Mexico. Potential water sources include reductions in local agricultural and urban water use through headings: Water supply; Restoration; Mexico; Colorado River; Environmental issues. Introduction Providing

  11. Cycle isolation monitoring

    SciTech Connect (OSTI)

    Svensen, L.M. III; Zeigler, J.R.; Todd, F.D.; Alder, G.C. [Santee Copper, Moncks Corner, SC (United States)

    2009-07-15T23:59:59.000Z

    There are many factors to monitor in power plants, but one that is frequently overlooked is cycle isolation. Often this is an area where plant personnel can find 'low hanging fruit' with great return on investment, especially high energy valve leakage. This type of leakage leads to increased heat rate, potential valve damage and lost generation. The fundamental question to ask is 'What is 100 Btu/kW-hr of heat rate worth to your plant? On a 600 MW coal-fired power plant, a 1% leakage can lead to an 81 Btu/kW-hr impact on the main steam cycle and a 64 Btu/kW-hr impact on the hot reheat cycle. The article gives advice on methods to assist in detecting leaking valves and to monitor cycle isolation. A software product, TP. Plus-CIM was designed to estimate flow rates of potentially leaking valves.

  12. Boston Architectural College Urban Sustainability Initiative

    SciTech Connect (OSTI)

    Byers, Arthur C.

    2013-07-31T23:59:59.000Z

    The Boston Architectural College's Urban Sustainability initiative is a demonstration project as defined by the National Energy Technology Laboratory. BAC's proposed project with the U.S. Department of Energy - NETL, is a large part of that overall initiative. The BAC's Urban Sustainability Initiative is a multi-part project with several important goals and objectives that will have a significant impact on the surrounding neighborhood including: energy conservation, reduction of storm water runoff, generation of power through alternative energy sources, elimination/reduction of BAC carbon footprint, and to create a vehicle for ongoing public outreach and education. Education and outreach opportunities will serve to add to the already comprehensive Sustainability Design courses offered at BAC relative to energy savings, performance and conservation in building design. At the finish of these essential capital projects there will be technical materials created for the education of the design, sustainability, engineering, community development and historic preservation communities, to inform a new generation of environmentally-minded designers and practitioners, the city of Boston and the general public. The purpose of the initiative, through our green renovations program, is to develop our green alley projects and energy saving renovations to the BAC physical plant, to serve as a working model for energy efficient design in enclosed 19th century and 20th century urban sites and as an educational laboratory for teaching ecological and sustainable technologies to students and the public while creating jobs. The scope of our project as it relates to the BAC and the U.S. Department of Energy- NETL combined efforts includes: Task I of the project is Phase II (Green Alley). Task I encompasses various renovation activities that will demonstrate the effectiveness of permeable paving and ground water recharge systems. It will aid in the reduction of storm water runoff into the Charles River Basin in one of its most significantly polluted sections and, will provide a green renovation mechanism for the redirected storm water of a public alley way. This activity is designed to improve the quality of water recharging the ground water and protecting the vulnerable wood pilings under many of the historic masonry buildings in Boston's Back Bay. Sustainable design research and system monitoring opportunities will also be incorporated, providing ongoing tools for public outreach and education through innovative signage and "virtual tour" technology. The monitoring will include a "building performance dash board" that reflects real time operating conditions and improvements in environmental and economic performance to be prominently displayed on the face of our 320 Newbury Street building (approximately 1.5 million people walk by annually). The project site and demonstration area is located at the rear of 951 Boylston Street, Boston, MA 02115 and the parking area adjacent to Public Alley #444 in Boston's historic Back Bay. Task II of the project is Geothermal Solution. This task involves the installation of approximately seven Geothermal wells which will tap into the earth's constant underground temperatures to provide air-conditioning and heating for BAC facilities. The environmentally friendly geothermal system uses no fossil fuel, produces no emissions and runs silently, providing a sustainable model for commercial and residential buildings throughout Boston. Ultimately the combination of this project and other projects will assist in making the BAC "carbon-neutral", and could generate enough additional energy to provide free power to the Engine 33 and Ladder 15 Firehouse located at 941 Boylston Street. The project is located at the rear of 951 Boylston Street, Boston, MA 02115 and the parking area adjacent to Public Alley #444 in Boston's historic Back Bay. Task III of the project is the Sustainability Design Curriculum at the BAC. The BAC is the nation’s largest independent, multi-disciplinary college of spatial design, and a leader in

  13. IFR fuel cycle

    SciTech Connect (OSTI)

    Battles, J.E.; Miller, W.E. (Argonne National Lab., IL (United States)); Lineberry, M.J.; Phipps, R.D. (Argonne National Lab., Idaho Falls, ID (United States))

    1992-01-01T23:59:59.000Z

    The next major milestone of the IFR program is engineering-scale demonstration of the pyroprocess fuel cycle. The EBR-II Fuel Cycle Facility has just entered a startup phase, which includes completion of facility modifications and installation and cold checkout of process equipment. This paper reviews the development of the electrorefining pyroprocess, the design and construction of the facility for the hot demonstration, the design and fabrication of the equipment, and the schedule and initial plan for its operation.

  14. IFR fuel cycle

    SciTech Connect (OSTI)

    Battles, J.E.; Miller, W.E. [Argonne National Lab., IL (United States); Lineberry, M.J.; Phipps, R.D. [Argonne National Lab., Idaho Falls, ID (United States)

    1992-04-01T23:59:59.000Z

    The next major milestone of the IFR program is engineering-scale demonstration of the pyroprocess fuel cycle. The EBR-II Fuel Cycle Facility has just entered a startup phase, which includes completion of facility modifications and installation and cold checkout of process equipment. This paper reviews the development of the electrorefining pyroprocess, the design and construction of the facility for the hot demonstration, the design and fabrication of the equipment, and the schedule and initial plan for its operation.

  15. Study of Pollutant Dispersion in Urban Environments

    E-Print Network [OSTI]

    Allen, Gabrielle

    and Cell (MAC) method for the governing equations, transport of passive scalars like the pollutantStudy of Pollutant Dispersion in Urban Environments Razvan Corneliu Carbunescu Center head: Study of pollutant dispersion in urban environments #12;Abstract Computational simulations can

  16. Spatiotemporal Monitoring of Urban Vegetation Christopher Small

    E-Print Network [OSTI]

    Small, Christopher

    in vegetation abundance influence environmental conditions and energy fluxes by selective reflection and absorbtion of solar radiation, by modulation of evapotranspiration and by sequestration of pollutants of the urban/suburban environment. Vegetation influences urban environmental conditions and energy fluxes

  17. Urban waterfront : problems and potentials of Boston

    E-Print Network [OSTI]

    Hossain, Mohammad Iqbal

    1984-01-01T23:59:59.000Z

    The essence of this thesis is based on the fact that downtown waterfronts are special urban areas in a city. These areas offer unique opportunities for providing cultural and recreational public amenities to urban life. ...

  18. High-resolution urban thermal sharpener (HUTS)

    E-Print Network [OSTI]

    Dominguez, Anthony; Kleissl, Jan; Luvall, Jeffrey C; Rickman, Douglas L

    2011-01-01T23:59:59.000Z

    the urban heat island of Houston, Texas,  Remote Sensing of infrared  remote sensing and GIS to asses the urban heat heat island analysis.  Photogrammetric Engineering & Remote 

  19. Field crossings : hybridizing the urban park

    E-Print Network [OSTI]

    Cyphers, Scott M

    2003-01-01T23:59:59.000Z

    The growth and identity of urban open space is a vital issue facing our cities today. The development and revitalization of old industrial centers in the United States has prompted urban transformations in usage, densification ...

  20. URBAN LEADERSHIP DEVELOPMENT PROGRAM SUPPLEMENTAL PROGRAM APPLICATION

    E-Print Network [OSTI]

    Walker, Lawrence R.

    URBAN LEADERSHIP DEVELOPMENT PROGRAM SUPPLEMENTAL PROGRAM APPLICATION as part of your Graduate College application to the Urban Leadership Program/Supervisor: #12;Part 3: LEADERSHIP EXPERIENCES: Identify any educational leadership experiences

  1. Director Position Center for Urban Transportation

    E-Print Network [OSTI]

    Arslan, Hüseyin

    Director Position Center for Urban Transportation The Center for Urban Transportation Research for state policymakers, transportation agencies, transportation professionals and the public. CUTR conducts of Transportation's Federal Transit Administration and Federal Highway Administration, the Florida Department

  2. The Origins of the Urban Crisis: Race

    E-Print Network [OSTI]

    Landweber, Laura

    racial- ized poverty. He challenged the conventional wisdom that urban decline was the result of failed the roots of urban poverty in a hidden history of racial violence, discrimination, and deindustri- alization

  3. Urban regeneration : enabled by mobility centric architecture

    E-Print Network [OSTI]

    Higgins, Wayne Charles

    2010-01-01T23:59:59.000Z

    The primary goal of this thesis is to develop a new urban architectural prototype to reinvigorate the British New Town. New models of adaptable, sustainable, architecture and urban design are explored with the ultimate ...

  4. Soil metagenomics and carbon cycling

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

    and carbon cycling Establishing a foundational understanding of the microbial and ecosystem factors that control carbon cycling to improve climate modeling and carbon...

  5. Towards Militaristic Urban Planning: the Genealogy of the Post-Colonial European Approach to Social and Urban Insecurity 

    E-Print Network [OSTI]

    Hedjazi, Alexandre B; Fekkak, Hatem

    2012-01-01T23:59:59.000Z

    Urban Planning: the Genealogy of the Post-Colonial Europeanexperience, the British genealogy of city planning and urban

  6. Threats to the world's water

    SciTech Connect (OSTI)

    la Riviere, J.W.M.

    1989-09-01T23:59:59.000Z

    Water is in short supply in many regions; almost everywhere increasing amounts of organic waste and industrial pollutants threaten its quality. Only international cooperation in the integrated management of water resources can ameliorate the situation. Agriculture is usually the main drain on the water supply. Problems associated with overirrigation, increased population, and organic and industrial wastes are described. The paper explains the global water cycle; illustrates the uneven distribution of water among the oceans, ground water, ice caps, glaciers, lakes, and soil moisture; and gives data on the global water consumption from 1950 to 1980. Recommendations for water management are given.

  7. Issues in the selection of the LMFBR steam cycle

    SciTech Connect (OSTI)

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

    1983-01-01T23:59:59.000Z

    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.

  8. Life Cycle environmental Assessment (LCA) of sanitation systems including sewerage: Case of vertical

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Life Cycle environmental Assessment (LCA) of sanitation systems including sewerage: Case The article presents the application of Life Cycle Assessment (LCA) to a complete sanitation system including of water sanitation systems may be done using the LCA approach (Life Cycle Assessment). Indeed

  9. Sampling Throughout The Hydrologic Cycle To Characterize Sources Of Volatile Organic

    E-Print Network [OSTI]

    Torgersen, Christian

    ether (MTBE) are sufficiently high to cause detection in ground water, whereas atmospheric that point sources of MTBE, such as spills or infiltration of urban runoff, are also prevalent are widespread. MTBE is detected less frequently in observation wells that tap 10- to 15-year-old ground water

  10. FEBRUARY 2013 WATER technical features

    E-Print Network [OSTI]

    and decision support tools enable proper system selection and design for a particular application. To achieve. In the US, centralised water and wastewater systems were serving about 85% and 75% of the population use for flushing toilets (~30%). Centralised systems can also lead to unplanned urban sprawl

  11. Helium process cycle

    DOE Patents [OSTI]

    Ganni, Venkatarao (Yorktown, VA)

    2008-08-12T23:59:59.000Z

    A unique process cycle and apparatus design separates the consumer (cryogenic) load return flow from most of the recycle return flow of a refrigerator and/or liquefier process cycle. The refrigerator and/or liquefier process recycle return flow is recompressed by a multi-stage compressor set and the consumer load return flow is recompressed by an independent consumer load compressor set that maintains a desirable constant suction pressure using a consumer load bypass control valve and the consumer load return pressure control valve that controls the consumer load compressor's suction pressure. The discharge pressure of this consumer load compressor is thereby allowed to float at the intermediate pressure in between the first and second stage recycle compressor sets. Utilizing the unique gas management valve regulation, the unique process cycle and apparatus design in which the consumer load return flow is separate from the recycle return flow, the pressure ratios of each recycle compressor stage and all main pressures associated with the recycle return flow are allowed to vary naturally, thus providing a naturally regulated and balanced floating pressure process cycle that maintains optimal efficiency at design and off-design process cycle capacity and conditions automatically.

  12. Helium process cycle

    DOE Patents [OSTI]

    Ganni, Venkatarao (Yorktown, VA)

    2007-10-09T23:59:59.000Z

    A unique process cycle and apparatus design separates the consumer (cryogenic) load return flow from most of the recycle return flow of a refrigerator and/or liquefier process cycle. The refrigerator and/or liquefier process recycle return flow is recompressed by a multi-stage compressor set and the consumer load return flow is recompressed by an independent consumer load compressor set that maintains a desirable constant suction pressure using a consumer load bypass control valve and the consumer load return pressure control valve that controls the consumer load compressor's suction pressure. The discharge pressure of this consumer load compressor is thereby allowed to float at the intermediate pressure in between the first and second stage recycle compressor sets. Utilizing the unique gas management valve regulation, the unique process cycle and apparatus design in which the consumer load return flow is separate from the recycle return flow, the pressure ratios of each recycle compressor stage and all main pressures associated with the recycle return flow are allowed to vary naturally, thus providing a naturally regulated and balanced floating pressure process cycle that maintains optimal efficiency at design and off-design process cycle capacity and conditions automatically.

  13. The Center for Urban Entrepreneurship &

    E-Print Network [OSTI]

    -commerce business models; effective communication for women in business; and technology transfer and countertradeThe Center for Urban Entrepreneurship & Economic Development (CUEED) Business Science Technology business.rutgers.edu Rutgers, The State University of New Jersey ­ founded 1766 Business Science Technology

  14. Urban Racial Segregation Measures Comparison

    E-Print Network [OSTI]

    Djonie, Jamil

    2011-02-22T23:59:59.000Z

    . Douglas Wunneburger, from the Department of Landscape Architecture and Urban Planning for his guidance and support through the course of this research. His GIS classes have opened my eyes to a new powerful tool to analyze from a different view. I wish...

  15. Phenomena and form at the water's edge : a scenario for Boston

    E-Print Network [OSTI]

    Cheng, Grace W. (Grace Wai-Mun)

    1994-01-01T23:59:59.000Z

    Hypothesis. Phenomenology of Water and Design Water is an important element in our environment and thus is important in urban, architectural, and landscape design. It also has an inseparable relationship with human beings ...

  16. Water Resources Center Annual Technical Report

    E-Print Network [OSTI]

    Water Resources Center Annual Technical Report FY 2001 Introduction Three research projects were. The technical transfer project set up a RI Water Resources Center Website to allow easy access to the Center treatment devices, such as oil/sediment separators, that have been widely installed in urbanized areas have

  17. Superfluid thermodynamic cycle refrigerator

    DOE Patents [OSTI]

    Swift, G.W.; Kotsubo, V.Y.

    1992-12-22T23:59:59.000Z

    A cryogenic refrigerator cools a heat source by cyclically concentrating and diluting the amount of [sup 3]He in a single phase [sup 3]He-[sup 4]He solution. The [sup 3]He in superfluid [sup 4]He acts in a manner of an ideal gas in a vacuum. Thus, refrigeration is obtained using any conventional thermal cycle, but preferably a Stirling or Carnot cycle. A single phase solution of liquid [sup 3]He at an initial concentration in superfluid [sup 4]He is contained in a first variable volume connected to a second variable volume through a superleak device that enables free passage of [sup 4]He while restricting passage of [sup 3]He. The [sup 3]He is compressed (concentrated) and expanded (diluted) in a phased manner to carry out the selected thermal cycle to remove heat from the heat load for cooling below 1 K. 12 figs.

  18. Superfluid thermodynamic cycle refrigerator

    DOE Patents [OSTI]

    Swift, Gregory W. (Santa Fe, NM); Kotsubo, Vincent Y. (La Canada, CA)

    1992-01-01T23:59:59.000Z

    A cryogenic refrigerator cools a heat source by cyclically concentrating and diluting the amount of .sup.3 He in a single phase .sup.3 He-.sup.4 He solution. The .sup.3 He in superfluid .sup.4 He acts in a manner of an ideal gas in a vacuum. Thus, refrigeration is obtained using any conventional thermal cycle, but preferably a Stirling or Carnot cycle. A single phase solution of liquid .sup.3 He at an initial concentration in superfluid .sup.4 He is contained in a first variable volume connected to a second variable volume through a superleak device that enables free passage of .sup.4 He while restricting passage of .sup.3 He. The .sup.3 He is compressed (concentrated) and expanded (diluted) in a phased manner to carry out the selected thermal cycle to remove heat from the heat load for cooling below 1 K.

  19. A Free Cooling Based Chilled Water System at Kingston

    E-Print Network [OSTI]

    Jansen, P. R.

    1984-01-01T23:59:59.000Z

    to the concept of cooling chilled water with condenser water via plate heat exchangers. The other free cooling scheme considered was a process called 'strainer cycle'. In strainer cycle, the cooling tower water is pumped directly into the chilled water... and process equipment and the CDD's (coolant distribution units) of computers installed and on test. Additionally, switchover to strainer cycle would be more time consuming and difficult. For a high technology site the switch over must be smooth...

  20. Proceedings: 7th International Conference on Cycle Chemistry in Fossil Plants

    SciTech Connect (OSTI)

    None

    2004-02-01T23:59:59.000Z

    The purity of boiler water, feedwater, and steam is central to ensuring component availability and reliability in fossil-fired plants. These proceedings of EPRI's Seventh International Conference on Cycle Chemistry in Fossil Plants address the state of the art in fossil plant and combined cycle/heat recovery steam generator (HRSG) cycle chemistry as well as international practices for corrosion control and water preparation and purification.

  1. Optimal operating conditions and configurations for humidification-dehumidification desalination cycles

    E-Print Network [OSTI]

    Lienhard V, John H.

    , each with either an air or a water heater, were considered in this analysis. Numerical optimization distillate) [kJ/kg] L length of heater [m] m mass flow rate [kg/s] mr mass flow rate ratio (feed water to dry that result in maximum gained output ratio (GOR). Closed air open water as well as open air open water cycles

  2. Nonpoint pollution of surface waters with phosphorus and nitrogen

    E-Print Network [OSTI]

    Carpenter, S. R.; Caraco, N. F.; Correll, D. L.; Howarth, R. W.; Sharpley, A. N.; Smith, Val H.

    1998-08-01T23:59:59.000Z

    information, we are confident that: (1) nonpoint pollution of surface waters with P and N could be reduced by reducing surplus nutrient flows in agricultural systems and processes, reducing agricultural and urban runoff by diverse methods, and reducing N...

  3. NONPOINT POLLUTION OF SURFACE WATERS WITH PHOSPHORUS AND NITROGEN

    E-Print Network [OSTI]

    Carpenter, Stephen R.; Caraco, Nina F. M.; Correll, David L.; Howarth, Robert W.; Sharpley, Andrew N.; Smith, Val H.

    1998-01-01T23:59:59.000Z

    information, we are confident that: (1) nonpoint pollution of surface waters with P and N could be reduced by reducing surplus nutrient flows in agricultural systems and processes, reducing agricultural and urban runoff by diverse methods, and reducing N...

  4. On-line hydraulic state prediction for water distribution systems

    E-Print Network [OSTI]

    Whittle, Andrew

    This paper describes and demonstrates a method for on?line hydraulic state prediction in urban water networks. The proposed method uses a Predictor?Corrector (PC) approach in which a statistical data?driven algorithm is ...

  5. active water management: Topics by E-print Network

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

    and Planning Problems of Urban Water Resources in the Metropolitan Area of Greater San Antonio Texas A&M University - TxSpace Summary: including the inventory and planning...

  6. agricultural water management: Topics by E-print Network

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

    and Planning Problems of Urban Water Resources in the Metropolitan Area of Greater San Antonio Texas A&M University - TxSpace Summary: including the inventory and planning...

  7. Ecosystem element cycling Introduction

    E-Print Network [OSTI]

    Ickert-Bond, Steffi

    Ecosystem element cycling Introduction An ecosystem consists of all the biological organisms and the physical environments they occupy together within a defined area [1]. The actual boundaries of an ecosystem are generally defined by researchers studying the ecosystem, who are usually interested in understanding

  8. GENERAL CIRCULATION Energy Cycle

    E-Print Network [OSTI]

    Grotjahn, Richard

    process. PE is useful for global energy balance. Solar radiant energy does not reach the Earth equally everywhere. On average, the tropics receive and absorb far more solar energy annually than the polar regionsGENERAL CIRCULATION Contents Energy Cycle Mean Characteristics Momentum Budget Overview Energy

  9. Life cycle assessment

    SciTech Connect (OSTI)

    Curran, M.A. [Environmental Protection Agency, Cincinnati, OH (United States)

    1994-12-31T23:59:59.000Z

    Life-Cycle Assessment (LCA) is a technical, data-based and holistic approach to define and subsequently reduce the environmental burdens associated with a product, process, or activity by identifying and quantifying energy and material usage and waste discharges, assessing the impact of those wastes on the environment, and evaluating and implementing opportunities to effect environmental improvements. The assessment includes the entire life-cycle of the product, process or activity encompassing extraction and processing of raw materials, manufacturing, transportation and distribution, use/reuse, recycling and final disposal. LCA is a useful tool for evaluating the environmental consequences of a product, process, or activity, however, current applications of LCA have not been performed in consistent or easily understood ways. This inconsistency has caused increased criticism of LCA. The EPA recognized the need to develop an LCA framework which could be used to provide consistent use across the board. Also, additional research is needed to enhance the understanding about the steps in the performance of an LCA and its appropriate usage. This paper will present the research activities of the EPA leading toward the development of an acceptable method for conducting LCA`s. This research has resulted in the development of two guidance manuals. The first manual is intended to be a practical guide to conducting and interpreting the life-cycle inventory. A nine-step approach to performing a comprehensive inventory is presented along with the general issues to be addressed. The second manual addresses life-cycle design.

  10. Combined Cycle Combustion Turbines

    E-Print Network [OSTI]

    Combined Cycle Combustion Turbines Steven Simmons February 27 2014 1 #12;CCCT Today's Discussion 1 Meeting Pricing of 4 advanced units using information from Gas Turbine World Other cost estimates from E E3 EIA Gas Turbine World California Energy Commission Date 2010 Oct 2012, Dec 2013 Apr 2013 2013 Apr

  11. Modeling Integrated Decisions for a Municipal Water System with Recourse and Uncertainties

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    for a municipal water system to cost-effectively accommodate a distribution of water shortages. Alternative robust in action costs, life spans, water volumes gained or saved, shortage levels, and shortage probabilities make water shortages pressing or impending realities for Amman, Jordan and many other urban water

  12. Cycling of Geotube® Solids from Dairy Lagoons Through Turfgrass Sod

    E-Print Network [OSTI]

    Schnell, R.; Tahboub, M.; Vietor, D.; Munster, C.; Provin, T.; Mukhtar, S.

    or socks made of synthetic fibers. Alum (aluminum sulfate) and polymers are injected into wastewater during pumping from lagoons into the socks to facilitate particle flocculation as water drains out of the tube through pores in the fabric. Solids... of alum and polymers during effluent treatment raises questions about the sustainability of Geotube ? solids application to agricultural or urban soils within or outside watersheds on which dairies are located (Sims et al. 2005). Sustainable systems...

  13. Water and Climate 1. Peter Rhines

    E-Print Network [OSTI]

    , water absorbs great thermal energy when it changes phase: melt, evaporate,, and liberates than energy when it condenses, freezes #12;Water and Climate 1. As a gas, water absorbs great thermal energy when (Fresh Water) Syllabus · 1 The global hydrologic cycle · 2 Energy transport: radiation, circulation ocean

  14. HIGHRESOLUTION SEISMIC CHARACTERIZATION IN A COMPLEX URBAN , FontCap, J.2

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    HIGHRESOLUTION SEISMIC CHARACTERIZATION IN A COMPLEX URBAN AREA Martí, D.1 , FontCapó, J.2 is very difficult. The street geometry determined the geometry of the seismic data acquisition "weathered" layer of variable thickness (building fundations, sewage system, water supply conductions, etc

  15. Health Risk Assessment: scale-dependent effects of urban air pollution on mortality

    E-Print Network [OSTI]

    Menut, Laurent

    Health Risk Assessment: scale-dependent effects of urban air pollution on mortality M. Valari(1), L;-Pollutants concentrations [c] ·Average outdoors pollution ·Indoors air quality ·Other sources of intoxication (food, water etc.) -Population exposure: [c] x dt -Health data & air pollution health effects Health

  16. Urban Stormwater and Watershed Management: A Case Study James P. Heaney, Len Wright, and David Sample

    E-Print Network [OSTI]

    Pitt, Robert E.

    classified as Decision Support Systems (DSS) (Loucks 1995). Contemporary DSS's contain a mixture9-1 Chapter 9 Urban Stormwater and Watershed Management: A Case Study James P. Heaney, Len Wright. The concept of integrated water and land management was first articulated in the western U.S. by John Wesley

  17. NEBRASKA WATER RESOURCES RESEARCH INSTITUTE 212 AGRICULTURAL ENGINEERING BUILDING

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    is Deputy Director for Water Resources Research. WASTE GUIDE ON THERMAL POLLUTION Copies of an "Industrial, urban water use and needs, water system construction, and flood plain management. The focal point VIaste Guide on Thermal Pollution" may be obtained by writing to: National Thermal Pollution Research

  18. Oklahoma Water Resources Research Institute Annual Technical Report

    E-Print Network [OSTI]

    Resources Board. Decision Support System for Long Term Planning of Rural and Urban Water Supply Systems CostOklahoma Water Resources Research Institute Annual Technical Report FY 2006 #12;Introduction developing the natural environment. The Oklahoma Water Resources Research Institute (OWRRI), located within

  19. Water Resources Water Quality and Water Treatment

    E-Print Network [OSTI]

    Sohoni, Milind

    Water Resources TD 603 Lecture 1: Water Quality and Water Treatment CTARA Indian Institute of Technology, Bombay 2nd November, 2011 #12;OVERVIEW Water Quality WATER TREATMENT PLANTS WATER TREATMENT PLANTS WATER TREATMENT PLANTS WATER TRE OVERVIEW OF THE LECTURE 1. Water Distribution Schemes Hand Pump

  20. Boundaries to membranes : the urban project revisited : an urban strategy for Rio de Janeiro, Zona Norte

    E-Print Network [OSTI]

    Dudek, Phebe (Phebe Helena Melania)

    2014-01-01T23:59:59.000Z

    This thesis investigates urban boundaries in the North Zone of Rio de Janeiro. The Zona Norte transitioned in the last hundred years from a rural outskirts area of Rio, into its industrial hinterland, into a fully urbanized ...

  1. Urban Parks: The Value of Small Urban Parks, Plazas and Other Outdoor Spaces

    E-Print Network [OSTI]

    Shafer, Carl Scott; Jacob, John

    2006-11-27T23:59:59.000Z

    People need parks. Great urban parks are places where communities come together, people interact, and social capital develops. Learn the characteristics of great urban parks and how they are created....

  2. Urban settlement issues : observations from 181 surveys of urban dwelling environments in developing countries

    E-Print Network [OSTI]

    Wang, Chih-chien, M.S. Massachusetts Institute of Technology

    1982-01-01T23:59:59.000Z

    Observations and summaries were made on 181 surveys of urban dwelling environments in developing countries, carried out by members of the Urban Settlement Design Program (U.S.D.P.), at MIT. The focus of this study is in ...

  3. SproutslO Urban Microfarm : interactive indoor farming system for urban use

    E-Print Network [OSTI]

    Farah, Jennifer Broutin

    2013-01-01T23:59:59.000Z

    SproutslO Urban Microfarm is an interactive farming system that enables people to reliably grow and access healthy produce in urban areas. The introduction of a localized system with the capacity to induce scalar impact ...

  4. An urban weather generator coupling a building simulation program with an urban canopy model

    E-Print Network [OSTI]

    Bueno Unzeta, Bruno

    2010-01-01T23:59:59.000Z

    The increase in air temperature observed in urban environments compared to the undeveloped rural surroundings, known as the Urban Heat Island (UHI) effect, is being intensely studied, due to its adverse environmental and ...

  5. AB 1007 Full Fuel Cycle Analysis (FFCA) Peer Review

    SciTech Connect (OSTI)

    Rice, D; Armstrong, D; Campbell, C; Lamont, A; Gallegos, G; Stewart, J; Upadhye, R

    2007-01-19T23:59:59.000Z

    LLNL is a participant of California's Advanced Energy Pathways (AEP) team funded by DOE (NETL). At the AEP technical review meeting on November 9, 2006. The AB 1007 FFCA team (Appendix A) requested LLNL participate in a peer review of the FFCA reports. The primary contact at the CEC was McKinley Addy. The following reports/presentations were received by LLNL: (1) Full Fuel Cycle Energy and Emissions Assumptions dated September 2006, TIAX; (2) Full Fuel cycle Assessment-Well to Tank Energy Inputs, Emissions, and Water Impacts dated December 2006, TIAX; and (3) Full Fuel Cycle Analysis Assessment dated October 12, 2006, TIAX.

  6. Research Summary A review of urban health, health inequalities and the role of urban forestry in Britain

    E-Print Network [OSTI]

    Research Summary A review of urban health, health inequalities and the role of urban forestry of Melbourne, Australia, to carry out a literature review of the role of urban forestry and its potential and health inequalities and identified the links between urban forestry and health in urban populations

  7. Parcel delivery and urban logistics-changes in urban courier, express and parcel services: the French (DUCRET, Raphalle; DELAITRE, Loc)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Parcel delivery and urban logistics- changes in urban courier, express and parcel services PARCEL DELIVERY AND URBAN LOGISTICS- CHANGES IN URBAN COURIER, EXPRESS AND PARCEL SERVICES: THE FRENCH new logistic organisations. The purpose of this paper is to give an updated overview of the urban

  8. Stirling cycle engine

    DOE Patents [OSTI]

    Lundholm, Gunnar (Lund, SE)

    1983-01-01T23:59:59.000Z

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

  9. An Inside Look at Bogot's Urban Renewal From Broad Urban Stories to Everyday Tales

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    was considered the sixth-best city in Latin America to do business. Yet the process has not been free1 An Inside Look at Bogotá's Urban Renewal From Broad Urban Stories to Everyday Tales Camilo Andrés process of urban renewal that fostered the insertion of the city in the international scene. In order

  10. Faculty perceptions of presidential leadership in urban school reform

    E-Print Network [OSTI]

    McClendon, Rodney Prescott

    2009-06-02T23:59:59.000Z

    The study examined urban university faculty members’ perceptions of their presidents’ leadership role in urban school reform. The population for this study consisted of faculty members from five urban research universities. All of the universities...

  11. Chapter 9: Impacts of exurban development on water quality Authors: Kathleen A. Lohse and Adina M. Merenlender

    E-Print Network [OSTI]

    Merenlender, Adina

    water conditions. In particular, little is known about how different types of urban land use, especially land use impact--land-use change models can be important decision support tools to identify areas options, and to identify options that result in water and land conservation. Agricultural and urban land

  12. Small Drains, Big Problems: The Impact of Dry Weather Runoff on Shoreline Water Quality at Enclosed Beaches

    E-Print Network [OSTI]

    AghaKouchak, Amir

    . In this paper we present field measurements and modeling studies aimed at evaluating the impact of small storm is minimal and human contact likely. Outdoor water conservation and urban retrofits that minimize the volume beach water quality in Newport Bay and other urban-impacted enclosed beaches. INTRODUCTION Enclosed

  13. A Risk-based Optimization Modeling Framework for Mitigating Fire Events for Water and Fire Response Infrastructures

    E-Print Network [OSTI]

    Kanta, Lufthansa Rahman

    2011-02-22T23:59:59.000Z

    as one of the United States' critical infrastructures and are vulnerable to various threats caused by natural disasters or malevolent actions. The primary goals of urban water distribution systems are reliable delivery of water during normal and emergency...

  14. High efficiency Brayton cycles using LNG

    DOE Patents [OSTI]

    Morrow, Charles W. (Albuquerque, NM)

    2006-04-18T23:59:59.000Z

    A modified, closed-loop Brayton cycle power conversion system that uses liquefied natural gas as the cold heat sink media. When combined with a helium gas cooled nuclear reactor, achievable efficiency can approach 68 76% (as compared to 35% for conventional steam cycle power cooled by air or water). A superheater heat exchanger can be used to exchange heat from a side-stream of hot helium gas split-off from the primary helium coolant loop to post-heat vaporized natural gas exiting from low and high-pressure coolers. The superheater raises the exit temperature of the natural gas to close to room temperature, which makes the gas more attractive to sell on the open market. An additional benefit is significantly reduced costs of a LNG revaporization plant, since the nuclear reactor provides the heat for vaporization instead of burning a portion of the LNG to provide the heat.

  15. Gauging Improvements in Urban Building Energy Policy in India

    E-Print Network [OSTI]

    Williams, Christopher

    2013-01-01T23:59:59.000Z

    Urban Building Energy Policy in India Christopher WilliamsUrban Building Energy Policy in India Christopher Williamsefficiency policies and programs in India are in an active

  16. Cultivation, Capital, and Contamination: Urban Agriculture in Oakland, California

    E-Print Network [OSTI]

    McClintock, Nathan

    2011-01-01T23:59:59.000Z

    urban gardens. Land Contamination & Reclamation 12 Schiff,Potentially toxic metal contamination of urban soils andAlloway, B. J. 2004. Contamination of soils in domestic

  17. Community Renewable Energy Success Stories: Wind Energy in Urban...

    Office of Environmental Management (EM)

    Community Renewable Energy Success Stories: Wind Energy in Urban Environments Webinar (text version) Community Renewable Energy Success Stories: Wind Energy in Urban Environments...

  18. Urban agriculture is a gateway to healthy foods

    E-Print Network [OSTI]

    Pérez, John A

    2013-01-01T23:59:59.000Z

    healthy tomorrow. Urban agriculture has multiple benefitsWestlake. 192 CALIFORNIA AGRICULTURE • VOLUME 67 , NUMBER 4Editorial Urban agriculture is a gateway to healthy foods A

  19. Comparative Analysis of Urban Atmospheric Aerosol by Particle...

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

    Analysis of Urban Atmospheric Aerosol by Particle-Induced X-ray Emission (PIXE), Proton Elastic Scattering Analysis Comparative Analysis of Urban Atmospheric Aerosol by...

  20. U.S. Department of Housing and Urban Development | Department...

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

    Housing and Urban Development The mission of the U.S. Department of Housing and Urban Development (HUD) is to create strong, sustainable, inclusive communities and quality...

  1. Trucking Industry Demand for Urban Shared Use Freight Terminals

    E-Print Network [OSTI]

    Regan, Amelia C.; Golob, Thomas F.

    2003-01-01T23:59:59.000Z

    for Urban Shared Use Terminals Taniguchi, E. , M. Noritake,of public logistics terminals. Transportation Research –Demand for Urban Shared Use Terminals References Aitchison,

  2. Geothermal Life Cycle Calculator

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Sullivan, John

    This calculator is a handy tool for interested parties to estimate two key life cycle metrics, fossil energy consumption (Etot) and greenhouse gas emission (ghgtot) ratios, for geothermal electric power production. It is based solely on data developed by Argonne National Laboratory for DOE’s Geothermal Technologies office. The calculator permits the user to explore the impact of a range of key geothermal power production parameters, including plant capacity, lifetime, capacity factor, geothermal technology, well numbers and depths, field exploration, and others on the two metrics just mentioned. Estimates of variations in the results are also available to the user.

  3. Quantum thermodynamic cooling cycle

    E-Print Network [OSTI]

    Jose P. Palao; Ronnie Kosloff; Jeffrey M. Gordon

    2001-06-08T23:59:59.000Z

    The quantum-mechanical and thermodynamic properties of a 3-level molecular cooling cycle are derived. An inadequacy of earlier models is rectified in accounting for the spontaneous emission and absorption associated with the coupling to the coherent driving field via an environmental reservoir. This additional coupling need not be dissipative, and can provide a thermal driving force - the quantum analog of classical absorption chillers. The dependence of the maximum attainable cooling rate on temperature, at ultra-low temperatures, is determined and shown to respect the recently-established fundamental bound based on the second and third laws of thermodynamics.

  4. Geothermal Life Cycle Calculator

    SciTech Connect (OSTI)

    Sullivan, John

    2014-03-11T23:59:59.000Z

    This calculator is a handy tool for interested parties to estimate two key life cycle metrics, fossil energy consumption (Etot) and greenhouse gas emission (ghgtot) ratios, for geothermal electric power production. It is based solely on data developed by Argonne National Laboratory for DOE’s Geothermal Technologies office. The calculator permits the user to explore the impact of a range of key geothermal power production parameters, including plant capacity, lifetime, capacity factor, geothermal technology, well numbers and depths, field exploration, and others on the two metrics just mentioned. Estimates of variations in the results are also available to the user.

  5. Quantum thermodynamic cooling cycle

    E-Print Network [OSTI]

    Palao, J P; Gordon, J M; Palao, Jose P.; Kosloff, Ronnie; Gordon, Jeffrey M.

    2001-01-01T23:59:59.000Z

    The quantum-mechanical and thermodynamic properties of a 3-level molecular cooling cycle are derived. An inadequacy of earlier models is rectified in accounting for the spontaneous emission and absorption associated with the coupling to the coherent driving field via an environmental reservoir. This additional coupling need not be dissipative, and can provide a thermal driving force - the quantum analog of classical absorption chillers. The dependence of the maximum attainable cooling rate on temperature, at ultra-low temperatures, is determined and shown to respect the recently-established fundamental bound based on the second and third laws of thermodynamics.

  6. Dynamic Analysis of Fuel Cycle Transitioning

    SciTech Connect (OSTI)

    Brent Dixon; Steve Piet; David Shropshire; Gretchen Matthern

    2009-09-01T23:59:59.000Z

    This paper examines the time-dependent dynamics of transitioning from a once-through fuel cycle to a closed fuel cycle. The once-through system involves only Light Water Reactors (LWRs) operating on uranium oxide fuel UOX), while the closed cycle includes both LWRs and fast spectrum reactors (FRs) in either a single-tier system or two-tier fuel system. The single-tier system includes full transuranic recycle in FRs while the two-tier system adds one pass of mixed oxide uranium-plutonium (MOX U-Pu) fuel in the LWR. While the analysis primarily focuses on burner fast reactors, transuranic conversion ratios up to 1.0 are assessed and many of the findings apply to any fuel cycle transitioning from a thermal once-through system to a synergistic thermal-fast recycle system. These findings include uranium requirements for a range of nuclear electricity growth rates, the importance of back end fuel cycle facility timing and magnitude, the impact of employing a range of fast reactor conversion ratios, system sensitivity to used fuel cooling time prior to recycle, impacts on a range of waste management indicators, and projected electricity cost ranges for once-through, single-tier and two-tier systems. The study confirmed that significant waste management benefits can be realized as soon as recycling is initiated, but natural uranium savings are minimal in this century. The use of MOX in LWRs decouples the development of recycle facilities from fast reactor fielding, but also significantly delays and limits fast reactor deployment. In all cases, fast reactor deployment was significantly below than predicted by static equilibrium analyses.

  7. Comparison of steady-state and transient CVS cycle emissions of an automotive Stirling engine

    SciTech Connect (OSTI)

    Farrell, R.A.; Bolton, R.J.

    1983-01-01T23:59:59.000Z

    The Automotive Stirling Engine Development Program has stringent emission goals for a Stirling-powered vehicle. The present investigation is concerned with the initial development of a procedure for predicting transient CVS urban cycle gaseous emissions from steady-state engine data. Steady-state data from three Mod I automotive Stirling engines are used to predict urban CVS cycle emissions for a Mod I Lerma vehicle. Predicted data with respect to NOx emissions were found to correspond closely to measured values, while there were differences for the CO and HC data. Reasons for these differences are briefly discussed. Attention is given to the test procedure and the measurements, the engine test results, vehicle emissions predictions, and a comparison of vehicle results and steady-state predictions. 11 references.

  8. The Water-Energy Nexus: Challenges and Opportunities Overview...

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

    DOESC-0155. Washington, DC: U.S. Department of Energy. http:science.energy.govmediaberpdfworkshop%20reportsWaterCycleReportHR.pdf. ORNL (Oak Ridge National...

  9. Water Use in the Development and Operations of Geothermal Power...

    Energy Savers [EERE]

    Operations of Geothermal Power Plants Water Use in the Development and Operations of Geothermal Power Plants This report summarizes what is currently known about the life cycle...

  10. Kouchoul cycle implication in the Tailer engine cycle

    SciTech Connect (OSTI)

    Arques, P.

    1996-12-31T23:59:59.000Z

    The author presents here the study of the Tailer engine modified cycle using the concept of load transfer for the Kouchoul cycle. Theoretical equations and numerical simulation of the Tailer engine modified cycle implicating the Kouchoul cycle are developed. The Tailer engine modified cycle can be improved by approaching cycles of spark plug engines by the addition of a phase of cooling of gases to the bottom dead center (bdc). This is possible only by putting a reservoir of cooled gas in communication with the cylinder to the bottom dead center. So as not to complicate the kinematic of the engine, the communication between cylinder and cooled reservoir is executed by some holes of 1 mm distributed on the whole periphery of the cylinder at the bdc.

  11. Developing solutions for sustainable living- the Urban Living Laboratory: The world's largest 'living laboratory' for research on green living

    E-Print Network [OSTI]

    Smith, Courtney

    2011-01-01T23:59:59.000Z

    if their products are making a di#15;erence in the environment? And how do they know if these so-called green products are being used correctly by consumers to decrease their water usage or electricity bill, or even improve air quality? #22;e answer: the Urban..., testing elements from water resources management to urban design and economics to transportation and logistics. At #28;rst read, it almost sounds like a scene from #27;e Truman Show, a movie about a man whose everyday life is recorded as a television...

  12. Developing solutions for sustainable living-the Urban Living Laboratory: The world's largest 'living laboratory' for research on green living

    E-Print Network [OSTI]

    Smith, Courtney

    2011-01-01T23:59:59.000Z

    if their products are making a di#15;erence in the environment? And how do they know if these so-called green products are being used correctly by consumers to decrease their water usage or electricity bill, or even improve air quality? #22;e answer: the Urban..., testing elements from water resources management to urban design and economics to transportation and logistics. At #28;rst read, it almost sounds like a scene from #27;e Truman Show, a movie about a man whose everyday life is recorded as a television...

  13. Life Cycle Inventory of a CMOS Chip

    E-Print Network [OSTI]

    Boyd, Sarah; Dornfeld, David; Krishnan, Nikhil

    2006-01-01T23:59:59.000Z

    are shown. Keywords- Life Cycle Assessment (LCA); Life Cycleindustry, and Life Cycle Assessment (LCA) is emerging as a

  14. New Developments in GIS in Water Resources

    E-Print Network [OSTI]

    Maidment, David

    2008-11-19T23:59:59.000Z

    • Standardized formats Data: • Dynamic in time • Simple in space (points) • No standardized formats What is “Hydro”? • Hydrology • Hydrography Circulation of the waters of the earth through the hydrologic cycle The “blue lines” on maps Properties of Water... of query functions • Returns data in WaterML Services-Oriented Architecture for Water Data • Links geographically distributed information servers through internet • Web Services Description Language (WSDL from W3C) • We designed WaterML as a web...

  15. One-way coupling of an integrated assessment model and a water resources model: evaluation and implications of future changes over the US Midwest

    SciTech Connect (OSTI)

    Voisin, Nathalie; Liu, Lu; Hejazi, Mohamad I.; Tesfa, Teklu K.; Li, Hongyi; Huang, Maoyi; Liu, Ying; Leung, Lai-Yung R.

    2013-11-18T23:59:59.000Z

    An integrated model is being developed to advance our understanding of the interactions between human activities, terrestrial system and water cycle, and how system interactions will be affected by a changing climate at the regional scale. As a first step towards that goal, a global integrated assessment model including a waterdemand model is coupled offline with a land surface hydrology – routing – water resources management model. A spatial and temporal disaggregation approach is developed to project the annual regional water demand simulations into a daily time step and subbasin representation. The model demonstrated reasonable ability to represent the historical flow regulation and water supply over the Midwest (Missouri, Upper Mississippi and Ohio). Implications for the future flow regulation, water supply and supply deficit are investigated using a climate change projection with the B1 emission scenario which affects both natural flow and water demand. Over the Midwest, changes in flow regulation are mostly driven by the change in natural flow due to the limited storage capacity over the Ohio and Upper Mississippi river basins. The changes in flow and demand have a combined effect on the Missouri Summer regulated flow. The supply deficit tends to be driven by the change in flow over the region. Spatial analysis demonstrates the relationship between the supply deficit and the change in demand over urban areas not along a main river or with limited storage, and over areas upstream of groundwater dependent fields with therefore overestimated demand.

  16. Valuing the Environmental Benefits of Urban Water Conservation

    E-Print Network [OSTI]

    Coughlin, Katie M.; Bolduc, Chris A.; Chan, Peter T.; Dunham-Whitehead, C.; Van Buskirk, R.D.

    2008-01-01T23:59:59.000Z

    to 0.61. Historical data on reservoir storage levels isdata but no storage data, the reservoir is not included ints of reservoirs were estimated from visitation data using a

  17. Before the tap runs dry: Municipal water users urged to conserve to help declining supplies 

    E-Print Network [OSTI]

    Wythe, Kathy

    2013-01-01T23:59:59.000Z

    water user, a#14;er agricultural irrigation and other urban uses, such as in-home and municipal use,? Cabrera said. Finch said some Texas cities still use #31;#30; percent or more of their water for landscapes, a prime target for water conservation... and you are using the right amount of water and the right kind of plants.? According to Wagner, a number of strategies, tools and management practices can signi#19;cantly reduce water usage in urban landscape irrigation. ?Using water-conserving...

  18. Sandia National Laboratories: urban conservation

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

    U.S. water supply and demand and explored potential "transformational" solutions from the perspectives of technology and policy (or both) and discussed ... Last Updated: October...

  19. Stirling cycle rotary engine

    SciTech Connect (OSTI)

    Chandler, J.A.

    1988-06-28T23:59:59.000Z

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

  20. What drives glacial cycles

    SciTech Connect (OSTI)

    Broecker, W.S.; Denton, G.H.

    1990-01-01T23:59:59.000Z

    The Milankovitch theory advocates that the glacial cycles have three components: the tilt of the earth's spin axis; the shape of the earth's orbit; and the interaction between the tilt and the eccentricity effects. These three factors work together to vary the amount of sunshine reaching the high northern latitudes in summer and allow the great ice sheets to grow during intervals of cool summers and mild winters. Evidence is presented which indicates that the circulation pattern of the Atlantic ocean was shifted dramatically about 14,000 years ago, at the same time that glaciers in both hemispheres started to retreat. The authors believe that massive reorganizations of the ocean-atmosphere system are the key events that link cyclic changes in the earth's orbit to the advance and retreat of ice sheet.

  1. Open cycle thermoacoustics

    SciTech Connect (OSTI)

    Reid, Robert Stowers

    2000-01-01T23:59:59.000Z

    A new type of thermodynamic device combining a thermodynamic cycle with the externally applied steady flow of an open thermodynamic process is discussed and experimentally demonstrated. The gas flowing through this device can be heated or cooled in a series of semi-open cyclic steps. The combination of open and cyclic flows makes possible the elimination of some or all of the heat exchangers (with their associated irreversibility). Heat is directly exchanged with the process fluid as it flows through the device when operating as a refrigerator, producing a staging effect that tends to increase First Law thermodynamic efficiency. An open-flow thermoacoustic refrigerator was built to demonstrate this concept. Several approaches are presented that describe the physical characteristics of this device. Tests have been conducted on this refrigerator with good agreement with a proposed theory.

  2. Advanced regenerative absorption refrigeration cycles

    DOE Patents [OSTI]

    Dao, Kim (14 Nace Ave., Piedmont, CA 94611)

    1990-01-01T23:59:59.000Z

    Multi-effect regenerative absorption cycles which provide a high coefficient of performance (COP) at relatively high input temperatures. An absorber-coupled double-effect regenerative cycle (ADR cycle) (10) is provided having a single-effect absorption cycle (SEA cycle) (11) as a topping subcycle and a single-effect regenerative absorption cycle (1R cycle) (12) as a bottoming subcycle. The SEA cycle (11) includes a boiler (13), a condenser (21), an expansion device (28), an evaporator (31), and an absorber (40), all operatively connected together. The 1R cycle (12) includes a multistage boiler (48), a multi-stage resorber (51), a multisection regenerator (49) and also uses the condenser (21), expansion device (28) and evaporator (31) of the SEA topping subcycle (11), all operatively connected together. External heat is applied to the SEA boiler (13) for operation up to about 500 degrees F., with most of the high pressure vapor going to the condenser (21) and evaporator (31) being generated by the regenerator (49). The substantially adiabatic and isothermal functioning of the SER subcycle (12) provides a high COP. For higher input temperatures of up to 700 degrees F., another SEA cycle (111) is used as a topping subcycle, with the absorber (140) of the topping subcycle being heat coupled to the boiler (13) of an ADR cycle (10). The 1R cycle (12) itself is an improvement in that all resorber stages (50b-f) have a portion of their output pumped to boiling conduits (71a-f) through the regenerator (49), which conduits are connected to and at the same pressure as the highest pressure stage (48a) of the 1R multistage boiler (48).

  3. FULL FUEL CYCLE ASSESSMENT WELL TO WHEELS ENERGY INPUTS,

    E-Print Network [OSTI]

    FULL FUEL CYCLE ASSESSMENT WELL TO WHEELS ENERGY INPUTS, EMISSIONS, AND WATER IMPACTS Preparation for the AB 1007 (Pavley) Alternative Transportation Fuels Plan Proceeding Prepared For: California Energy, Project Manager Ray Tuvell, Manager EMERGING FUELS & TECHNOLOGY OFFICE Rosella Shapiro, Deputy Director

  4. FULL FUEL CYCLE ASSESSMENT WELL TO TANK ENERGY INPUTS,

    E-Print Network [OSTI]

    FULL FUEL CYCLE ASSESSMENT WELL TO TANK ENERGY INPUTS, EMISSIONS, AND WATER IMPACTS Prepared For Manager McKinley Addy, Project Manager Ray Tuvell, Manager EMERGING FUELS & TECHNOLOGY OFFICE Rosella Shapiro, Deputy Director FUELS AND TRANSPORTATION DIVISION B.B Blevins Executive Director DISCLAIMER

  5. Recycling and Life Cycle Issues

    SciTech Connect (OSTI)

    Das, Sujit [ORNL

    2010-01-01T23:59:59.000Z

    This chapter addresses recycling and life cycle considerations related to the growing use of lightweight materials in vehicles. The chapter first addresses the benefit of a life cycle perspective in materials choice, and the role that recycling plays in reducing energy inputs and environmental impacts in a vehicle s life cycle. Some limitations of life cycle analysis and results of several vehicle- and fleet-level assessments are drawn from published studies. With emphasis on lightweight materials such as aluminum, magnesium, and polymer composites, the status of the existing recycling infrastructure and technological challenges being faced by the industry also are discussed.

  6. Glacial cycles and astronomical forcing

    SciTech Connect (OSTI)

    Muller, R.A. [Lawrence Berkeley Lab., CA (United States)] [Lawrence Berkeley Lab., CA (United States); MacDonald, G.J. [International Institute for Applied Systems Analysis, Laxenburg (Austria)] [International Institute for Applied Systems Analysis, Laxenburg (Austria)

    1997-07-11T23:59:59.000Z

    Narrow spectral features in ocean sediment records offer strong evidence that the cycles of glaciation were driven by astronomical forces. Two million years ago, the cycles match the 41,000-year period of Earth`s obliquity. This supports the Croll/Milankovitch theory, which attributes the cycles to variations in insolation. But for the past million years, the spectrum is dominated by a single 100,000-year feature and is a poor match to the predictions of insolation models. The spectrum can be accounted for by a theory that derives the cycles of glaciation from variations in the inclination of Earth`s orbital plane.

  7. Nitrogen Cycling and Ecosystem Exchanges in a Virginia Tidal Freshwater Marsh

    E-Print Network [OSTI]

    Neubauer, Scott C.

    loading due to watershed development and urbanization. We present a process-based mass balance model of N habitats for juvenile fishes, and buffering storm and flood waters (Odum et al. 1984; Mitsch and Gosselink dominated tidal freshwater marsh in the York River estuary, Virginia. The model, which was based

  8. CE 668 Urban Public Transportation Systems Reading List

    E-Print Network [OSTI]

    Hickman, Mark

    1 CE 668 Urban Public Transportation Systems Reading List General Reference Alan Black, Urban Mass Transportation Planning. New York: McGraw-Hill, 1995. Canadian Urban Transit Association, The Canadian Transit.), Public Transportation. Englewood Cliffs: Prentice-Hall, 1992. Vukan Vuchic, Urban Public Transportation

  9. Effective Fall 2014 Requirements for the Urban Architecture and

    E-Print Network [OSTI]

    Effective Fall 2014 8.20.14 Requirements for the Urban Architecture and Urban Design Specialization Required Core Courses: (13 credits) ________ ARCH 507 Sustainable Urbanism (3 credits) ________ ARCH 535 as part of the urban architecture specialization in Portland. In the case that one or more of these course

  10. The Organic Rankine Cycle System, Its Application to Extract Energy From Low Temperature Waste Heat

    E-Print Network [OSTI]

    Sawyer, R. H.; Ichikawa, S.

    1980-01-01T23:59:59.000Z

    in a Rankine Cycle to extract The theoretical Rankine Cycle efficiency (~R) is energy from low temperature waste heat. By 1968, a defined as: 3.8 megawatt unit using R-11 refrigerant was placed in commercial operation in Japan (2) and currently ?ZR.... Figure 2 compares the theo The basic Organic Rankine Cycle may be described retical Rankine efficiency for several hydrocarbons, using the Pressure-Enthalpy Diagram of a typical fluorocarbons and water within the evaporating working fluid (R-11). (See...

  11. Multivariable cycle-to-cycle of an injection molding process

    E-Print Network [OSTI]

    Vanderpuije, Curtis N

    2005-01-01T23:59:59.000Z

    Cycle-to-Cycle (CtC) feedback control has been studied extensively with increasing demands on the precision and quality of manufactured parts. Single input-Single output has been studied as the basis of CtC feedback control. ...

  12. Iron speciation in urban dust

    SciTech Connect (OSTI)

    Elzinga, E.J.; Fitts, J.; Gao, Y.; Tappero, R.

    2011-08-01T23:59:59.000Z

    An improved understanding of anthropogenic impacts on ocean fertility requires knowledge of anthropogenic dust mineralogy and associated Fe speciation as a critical step toward developing Fe solubility models constrained by mineralogical composition. This study explored the utility of micro-focused X-ray absorption spectroscopy ({mu}-XAS) in characterizing the speciation of Fe in urban dust samples. A micro-focused beam of 10 x 7 {mu}m made possible the measurement of the Fe K edge XAS spectra of individual dust particles in the PM5.6 size fraction collected in Newark, New Jersey, USA. Spectral analysis indicated the presence of mixtures of Fe-containing minerals within individual dust particles; we observed significant magnetite content along with other Fe(III)-(hydr)oxide minerals which could not be conclusively identified. Our data indicate that detailed quantitative determination of Fe speciation requires extended energy scans to constrain the types and relative abundance of Fe species present. We observe heterogeneity in Fe speciation at the dust particle level, which underscores the importance of analyzing a statistically adequate number of particles within each dust sample. Where possible, {mu}-XAS measurements should be complemented with additional characterization techniques such as {mu}-XRD and bulk XAS to obtain a comprehensive picture of the Fe speciation in dust materials. X-ray microprobes should be used to complement bulk methods used to determine particle composition, methods that fail to record particle heterogeneity. Keywords - Urban dust; Iron; Speciation; Micro-focused X-ray absorption spectroscopy.

  13. Institute of Water Research Annual Technical Report

    E-Print Network [OSTI]

    decision support systems (SDSS). These geospatial decision support systems provide an analytical framework in partnership with other states in EPA Region 5 using state-of-the-art decision support systems. The Institute. The Institute also provides important support to MSU-WATER, a major university initiative dealing with urban

  14. Water and terrorism Peter H. Gleick

    E-Print Network [OSTI]

    and wastewater treatment plants dot our urban and rural landscape. What is less clear, however, is how. Keywords: Biological warfare; Chemical warfare; Distribution systems; Eco-terrorism; Environmental reliable safe water supplies and to remove and treat wastewater. This infrastructure is vital for human

  15. Sodium shortage as a constraint on the carbon cycle in an inland tropical rainforest

    E-Print Network [OSTI]

    Kaspari, Mike

    Sodium shortage as a constraint on the carbon cycle in an inland tropical rainforest Michael- composition of pure cellulose by up to 50%, compared with stream water alone. These effects emerged after 134). We provide experimental evidence that Na shortage slows the carbon cycle. Because 80% of global

  16. Cycle Analysis on Ocean Geothermal Power Generation using Multi-staged Turbine

    E-Print Network [OSTI]

    Cycle Analysis on Ocean Geothermal Power Generation using Multi-staged Turbine 2013. 09. 11 Korea ORC #12;Cycle simulation Solver : HYSYS Basic simulation design T-S diagram Pump Turbine Evaporator & turbine : iso-entropic process Pump Turbine Evaporator Condenser 4 1 2 3 Geothermal water Deep seawater

  17. MODELING HORMONAL CONTROL MENSTRUAL CYCLE

    E-Print Network [OSTI]

    MODELING HORMONAL CONTROL OF THE MENSTRUAL CYCLE James F. Selgrade Department of Mathematics of five hormones important for regulation and maintenance of the menstrual cycle. Models which correctly@math.ncsu.edu Abstract This study presents a strategy for developing a mathematical model describing the concentrations

  18. Nuclear fuel cycle information workshop

    SciTech Connect (OSTI)

    Not Available

    1983-01-01T23:59:59.000Z

    This overview of the nuclear fuel cycle is divided into three parts. First, is a brief discussion of the basic principles of how nuclear reactors work; second, is a look at the major types of nuclear reactors being used and world-wide nuclear capacity; and third, is an overview of the nuclear fuel cycle and the present industrial capability in the US.

  19. Orbital Resonance and Solar Cycles

    E-Print Network [OSTI]

    P. A. Semi

    2009-03-29T23:59:59.000Z

    We present an analysis of planetary moves, encoded in DE406 ephemerides. We show resonance cycles between most planets in Solar System, of differing quality. The most precise resonance - between Earth and Venus, which not only stabilizes orbits of both planets, locks planet Venus rotation in tidal locking, but also affects the Sun: This resonance group (E+V) also influences Sunspot cycles - the position of syzygy between Earth and Venus, when the barycenter of the resonance group most closely approaches the Sun and stops for some time, relative to Jupiter planet, well matches the Sunspot cycle of 11 years, not only for the last 400 years of measured Sunspot cycles, but also in 1000 years of historical record of "severe winters". We show, how cycles in angular momentum of Earth and Venus planets match with the Sunspot cycle and how the main cycle in angular momentum of the whole Solar system (854-year cycle of Jupiter/Saturn) matches with climatologic data, assumed to show connection with Solar output power and insolation. We show the possible connections between E+V events and Solar global p-Mode frequency changes. We futher show angular momentum tables and charts for individual planets, as encoded in DE405 and DE406 ephemerides. We show, that inner planets orbit on heliocentric trajectories whereas outer planets orbit on barycentric trajectories.

  20. A nesting study of two populations of cardinals: urban and non-urban

    E-Print Network [OSTI]

    Kutac, Mary Florence

    1976-01-01T23:59:59.000Z

    in the Urban Area. 25 ~ NEST LOCATION T E R R I T 0 R Y POND CREEK BED TRAIL BUILDING / / / / / 9 0 ~ IDI 500 FEET Figure 3. Nest Sites and Estimated Territory Size for the Non-Urban Area. estimation was taken in 1968 and does not show... utilized, not just the nesting habitat. Nest Site Location Urban Area In the urban area, the mean height of the vegetation in which nests were built was 12. 0 feet (S. D. = + 8. 5, n = 16) with a range of 4-40 feet. 25% of the nests were built...

  1. Mayors, Markets and Municipal Reform: The Politics of Water Delivery in Mexico

    E-Print Network [OSTI]

    Herrera, Veronica Maria Sol

    2011-01-01T23:59:59.000Z

    cycle…there is a lack of water in the city, it threatensbut did not because of lack of water, because they needed aconcerned about the lack of adequate water provision and

  2. High efficiency carbonate fuel cell/turbine hybrid power cycle

    SciTech Connect (OSTI)

    Steinfeld, G.; Maru, H.C. [Energy Research Corp., Danbury, CT (United States); Sanderson, R.A. [Sanderson (Robert) and Associates, Wethersfield, CT (United States)

    1996-07-01T23:59:59.000Z

    The hybrid power cycle studies were conducted to identify a high efficiency, economically competitive system. A hybrid power cycle which generates power at an LHV efficiency > 70% was identified that includes an atmospheric pressure direct carbonate fuel cell, a gas turbine, and a steam cycle. In this cycle, natural gas fuel is mixed with recycled fuel cell anode exhaust, providing water for reforming fuel. The mixed gas then flows to a direct carbonate fuel cell which generates about 70% of the power. The portion of the anode exhaust which is not recycled is burned and heat transferred through a heat exchanger (HX) to the compressed air from a gas turbine. The heated compressed air is then heated further in the gas turbine burner and expands through the turbine generating 15% of the power. Half the exhaust from the turbine provides air for the anode exhaust burner. All of the turbine exhaust eventually flows through the fuel cell cathodes providing the O2 and CO2 needed in the electrochemical reaction. Exhaust from the cathodes flows to a steam system (heat recovery steam generator, staged steam turbine generating 15% of the cycle power). Simulation of a 200 MW plant with a hybrid power cycle had an LHV efficiency of 72.6%. Power output and efficiency are insensitive to ambient temperature, compared to a gas turbine combined cycle; NOx emissions are 75% lower. Estimated cost of electricity for 200 MW is 46 mills/kWh, which is competitive with combined cycle where fuel cost is > $5.8/MMBTU. Key requirement is HX; in the 200 MW plant studies, a HX operating at 1094 C using high temperature HX technology currently under development by METC for coal gassifiers was assumed. A study of a near term (20 MW) high efficiency direct carbonate fuel cell/turbine hybrid power cycle has also been completed.

  3. Life Cycle Asset Management

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

    1998-10-14T23:59:59.000Z

    (The following directives are deleted or consolidated into this Order and shall be phased out as noted in Paragraph 2: DOE 1332.1A; DOE 4010.1A; DOE 4300.1C; DOE 4320.1B; DOE 4320.2A; DOE 4330.4B; DOE 4330.5; DOE 4540.1C; DOE 4700.1). This Order supersedes specific project management provisions within DOE O 430.1A, LIFE CYCLE ASSET MANAGEMENT. The specific paragraphs canceled by this Order are 6e(7); 7a(3); 7b(11) and (14); 7c(4),(6),(7),(11), and (16); 7d(4) and (8); 7e(3),(10), and (17); Attachment 1, Definitions (item 30 - Line Item Project, item 42 - Project, item 48 - Strategic System); and Attachment 2, Contractor Requirements Document (paragraph 1d regarding a project management system). The remainder of DOE O 430.1A remains in effect. Cancels DOE O 430.1. Canceled by DOE O 413.3.

  4. Biomass Gasification Combined Cycle

    SciTech Connect (OSTI)

    Judith A. Kieffer

    2000-07-01T23:59:59.000Z

    Gasification combined cycle continues to represent an important defining technology area for the forest products industry. The ''Forest Products Gasification Initiative'', organized under the Industry's Agenda 2020 technology vision and supported by the DOE ''Industries of the Future'' program, is well positioned to guide these technologies to commercial success within a five-to ten-year timeframe given supportive federal budgets and public policy. Commercial success will result in significant environmental and renewable energy goals that are shared by the Industry and the Nation. The Battelle/FERCO LIVG technology, which is the technology of choice for the application reported here, remains of high interest due to characteristics that make it well suited for integration with the infrastructure of a pulp production facility. The capital cost, operating economics and long-term demonstration of this technology area key input to future economically sustainable projects and must be verified by the 200 BDT/day demonstration facility currently operating in Burlington, Vermont. The New Bern application that was the initial objective of this project is not currently economically viable and will not be implemented at this time due to several changes at and around the mill which have occurred since the inception of the project in 1995. The analysis shows that for this technology, and likely other gasification technologies as well, the first few installations will require unique circumstances, or supportive public policies, or both to attract host sites and investors.

  5. Efficient Irrigation for Water conservation in the Rio Grande Basin: 2010-2011 Progress and Accomplishments

    E-Print Network [OSTI]

    Kalisek, D.; Harris, B.L.; Runyan, C.; DeMouche, L.

    2011-06-21T23:59:59.000Z

    in irrigation. Use of GIS as a real-time decision support system for irrigation districts An online GIS application integrates pump flow, meter data, and water account information to support districts in their current water management and conservation... Water Use 08 Task 4 On-Farm Irrigation System Management 12 Task 5 Urban Water Conservation 16 Task 6 Environment, Ecology and Water Quality Protection 22 Task 7 Saline and Wastewater Management and Water Reuse 28 Task 8...

  6. Maryland Water Resources Research Center Annual Technical Report

    E-Print Network [OSTI]

    of a Computer-Assisted Decision Support System Using Realistic Interactive Visualization as a Learning Tool Water Resources Research Center (MWRRC) supported a variety of research and outreach activities to restore natural hydro-ecological function in urban headwater streams; analyzing the water-holding capacity

  7. South Carolina Water Resources Research Annual Technical Report

    E-Print Network [OSTI]

    South Carolina Water Resources Research Institute Annual Technical Report FY 2008 South Carolina Water Resources Research Institute Annual Technical Report FY 2008 1 #12;Introduction The South Carolina losses of both agricultural and forest land covers to urban uses. These losses could significantly impact

  8. Fuel cycle cost uncertainty from nuclear fuel cycle comparison

    SciTech Connect (OSTI)

    Li, J.; McNelis, D. [Institute for the Environment, University of North Carolina, Chapel Hill (United States); Yim, M.S. [Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology (Korea, Republic of)

    2013-07-01T23:59:59.000Z

    This paper examined the uncertainty in fuel cycle cost (FCC) calculation by considering both model and parameter uncertainty. Four different fuel cycle options were compared in the analysis including the once-through cycle (OT), the DUPIC cycle, the MOX cycle and a closed fuel cycle with fast reactors (FR). The model uncertainty was addressed by using three different FCC modeling approaches with and without the time value of money consideration. The relative ratios of FCC in comparison to OT did not change much by using different modeling approaches. This observation was consistent with the results of the sensitivity study for the discount rate. Two different sets of data with uncertainty range of unit costs were used to address the parameter uncertainty of the FCC calculation. The sensitivity study showed that the dominating contributor to the total variance of FCC is the uranium price. In general, the FCC of OT was found to be the lowest followed by FR, MOX, and DUPIC. But depending on the uranium price, the FR cycle was found to have lower FCC over OT. The reprocessing cost was also found to have a major impact on FCC.

  9. Visualization of Fuel Cell Water Transport and Characterization under Freezing Conditions

    E-Print Network [OSTI]

    Visualization of Fuel Cell Water Transport and Characterization under Freezing Conditions Freeze/Thaw Cycles -Damage can be done to all components of PEMFC Before After 3 freeze-thaw cycles Water performance Preliminary images of a GDL sample after several freeze-thaw cycles, RIT #12;Project Focus: From

  10. This study is funded by the National Science Foundation (NSF) through grant EF1049251: "Assessing Decadal Climate Change Impacts on Urban Populations in the Southwestern United States."

    E-Print Network [OSTI]

    Hall, Sharon J.

    Decadal Climate Change Impacts on Urban Populations in the Southwestern United States." Data calibrates a point-scale soil water balance model to available soil moisture data, using historical, despite its notable effects on water, energy and biomass conditions. This omission is noteworthy

  11. The urban garden : Port Alliance, Texas

    E-Print Network [OSTI]

    Manning, Isaac Hall, 1958-

    1990-01-01T23:59:59.000Z

    This thesis focuses on of three urban parks; Central Park i n New York , the Fens to Franklin Park in Boston, and Rock Creek Park in washington, designed by Frederick Law Olmsted and the growth of the cities around them. ...

  12. Controlling Tree Squirrels in Urban Areas

    E-Print Network [OSTI]

    Texas Wildlife Services

    2006-09-06T23:59:59.000Z

    In urban areas, tree squirrels can become pests when they eat pecans, berries, bird seed or vegetables from home gardens, or when they nest in attics. This leaflet discusses control of squirrels by fencing, trapping, poisoning and shooting....

  13. Urban solarium : thermal performance in Boston

    E-Print Network [OSTI]

    Hsu, Juliet Chia-Wen

    2012-01-01T23:59:59.000Z

    This thesis addresses the issue of energy efficiency through the lens of thermal performance in the context of urban housing in the city of Boston. Located in the historic brick row house neighborhood of the South End, the ...

  14. 5, 1118311213, 2005 simulation of urban

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    com-25 plex, and hence, it requires a special treatment. The surface energy balance is the 11184 #12/surfaces and urban districts such as city center, high buildings, industrial, and residential. Results showed strong

  15. Urban Decontamination Experience at Pripyat Ukraine - 13526

    SciTech Connect (OSTI)

    Paskevych, Sergiy [Institute for Safety Problems of Nuclear Power Plants, National Academy of Sciences of Ukraine, 36 a Kirova str. Chornobyl, Kiev region, 07200 (Ukraine)] [Institute for Safety Problems of Nuclear Power Plants, National Academy of Sciences of Ukraine, 36 a Kirova str. Chornobyl, Kiev region, 07200 (Ukraine); Voropay, Dmitry [Federal State Unitary Enterprise 'Russian State Center of Inventory and Registration and Real Estate - Federal Bureau of Technical Inventory', 37-2 Bernadsky Prospekt, Moscow Russia 119415 (Russian Federation)] [Federal State Unitary Enterprise 'Russian State Center of Inventory and Registration and Real Estate - Federal Bureau of Technical Inventory', 37-2 Bernadsky Prospekt, Moscow Russia 119415 (Russian Federation); Schmieman, Eric [Battelle Memorial Institute, PO Box 999 MSIN K6-90, Richland, WA 99352 (United States)] [Battelle Memorial Institute, PO Box 999 MSIN K6-90, Richland, WA 99352 (United States)

    2013-07-01T23:59:59.000Z

    This paper describes the efficiency of radioactive decontamination activities of the urban landscape in the town of Pripyat, Ukraine. Different methods of treatment for various urban infrastructure and different radioactive contaminants are assessed. Long term changes in the radiation condition of decontaminated urban landscapes are evaluated: 1. Decontamination of the urban system requires the simultaneous application of multiple methods including mechanical, chemical, and biological. 2. If a large area has been contaminated, decontamination of local areas of a temporary nature. Over time, there is a repeated contamination of these sites due to wind transport from neighboring areas. 3. Involvement of earth-moving equipment and removal of top soil by industrial method achieves 20-fold reduction in the level of contamination by radioactive substances, but it leads to large amounts of waste (up to 1500 tons per hectare), and leads to the re-contamination of treated areas due to scatter when loading, transport pollutants on the wheels of vehicles, etc.. (authors)

  16. Methods for Allocating Urban Emergency Units

    E-Print Network [OSTI]

    Chaiken, Jan M.

    An urban emergency service system provides mobile units (vehicles) to respond to requests for service which can occur at any time and any place throughout a city. This paper surveys recent quantitative work aimed at improving ...

  17. Ecotransology : integrated design for urban mobility

    E-Print Network [OSTI]

    Joachim, Mitchell Whitney

    2006-01-01T23:59:59.000Z

    This thesis demonstrates a rethinking of urban mobility through ecological design. Human mobility and ecological accountability are inextricably linked in city design; our current world ecological crisis underscores this ...

  18. Sustainable and equitable urban environments in Asia

    E-Print Network [OSTI]

    Badshah, Akhtar

    1993-01-01T23:59:59.000Z

    This study identifies some of the factors and conditions that can encourage the development of sustainable and equitable urban environments. It argues that cities will continue to grow and that it is not productive to view ...

  19. Browse : re-forming the urban library

    E-Print Network [OSTI]

    Baron, Sandra Ann

    2007-01-01T23:59:59.000Z

    The urban library has persisted as a cultural entity, largely because its interiorized form functions as a vault, creating a clear, although often intimidating, boundary between library program and the public realm. While ...

  20. Metromorphosis : evolution on the urban island

    E-Print Network [OSTI]

    Vezina, Kenrick (Kenrick Freitas)

    2011-01-01T23:59:59.000Z

    Cities are very much alive. Like islands, they provide a natural testing ground for evolution. With more than half of the world's population living in urban areas now, the influence cities have on the planet's life is ...

  1. Webinar: Tapping Into Wind in Urban Environments

    Broader source: Energy.gov [DOE]

    This live webinar presented by DOE on "Community Renewable Energy Success Stories: Tapping into Wind in Urban Environments" will take place on Tuesday, September 18, 2012, from 3:00 – 4:15 p.m....

  2. Comparison of steady-state and transient CVS cycle emissions of an automotive Stirling engine

    SciTech Connect (OSTI)

    Farrell, R.A.; Bolton, R.J.

    1983-10-01T23:59:59.000Z

    One of the goals of the Automotive Stirling Engine Development Program, sponsored by the Department of Energy and managed by NASA/Lewis Research Center, is to develop a rationale for predicting transient CVS cycle emissions from steady-state engine data. A technique is developed that integrates engine emissions as a function of fuel flow over a modelled CVS cycle to predict vehicle urban cycle results. Steady-state emissions data from three Mod I engines* burning unleaded gasoline are used to predict vehicle NO /SUB x/, CO, and HC emissions. A total of 155 data points representing variations in engine power, excess air (lambda), and the exhaust gas recirculation (EGR) schedule are utilized. Predictions are then compared to the results of nine urban CVS cycle tests of the Mod I/Lerma vehicle, and a conclusion is reached that very accurate predictions of vehicle NO /SUB x/ emissions are possible. CO and HC emissions are considerably higher than predicted due to extreme sensitivity of CO emissions to Lambda, the effect of heater head temperature, and failure of the engine to accurately reflect emissions during start-up.

  3. High-speed thermal cycling system and method of use

    DOE Patents [OSTI]

    Hansen, A.D.A.; Jaklevic, J.M.

    1996-04-16T23:59:59.000Z

    A thermal cycling system and method of use are described. The thermal cycling system is based on the circulation of temperature-controlled water directly to the underside of thin-walled polycarbonate plates. The water flow is selected from a manifold fed by pumps from heated reservoirs. The plate wells are loaded with typically 15-20 microliters of reagent mix for the PCR process. Heat transfer through the thin polycarbonate is sufficiently rapid that the contents reach thermal equilibrium with the water in less than 15 seconds. Complete PCR amplification runs of 40 three-step cycles have been performed in as little as 14.5 minutes, with the results showing substantially enhanced specificity compared to conventional technology requiring run times in excess of 100 minutes. The plate clamping station is designed to be amenable to robotic loading and unloading of the system. It includes a heated lid, thus eliminating the need for mineral oil overlay of the reactants. The present system includes three or more plate holder stations, fed from common reservoirs but operating with independent switching cycles. The system can be modularly expanded. 13 figs.

  4. High-speed thermal cycling system and method of use

    DOE Patents [OSTI]

    Hansen, Anthony D. A. (Berkely, CA); Jaklevic, Joseph M. (Lafayette, CA)

    1996-01-01T23:59:59.000Z

    A thermal cycling system and method of use are described. The thermal cycling system is based on the-circulation of temperature-controlled water directly to the underside of thin-walled polycarbonate microtiter plates. The water flow is selected from a manifold fed by pumps from heated reservoirs. The plate wells are loaded with typically 15-20 .mu.l of reagent mix for the PCR process. Heat transfer through the thin polycarbonate is sufficiently rapid that the contents reach thermal equilibrium with the water in less than 15 seconds. Complete PCR amplification runs of 40 three-step cycles have been performed in as little as 14.5 minutes, with the results showing substantially enhanced specificity compared to conventional technology requiring run times in excess of 100 minutes. The plate clamping station is designed to be amenable to robotic loading and unloading of the system. It includes a heated lid, thus eliminating the need for mineral oil overlay of the reactants. The present system includes three or more plate holder stations, fed from common reservoirs but operating with independent switching cycles. The system can be modularly expanded.

  5. Assessment of transition fuel cycle performance with and without a modified-open fuel cycle

    SciTech Connect (OSTI)

    Feng, B.; Kim, T. K.; Taiwo, T. A. [Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439 (United States)

    2012-07-01T23:59:59.000Z

    The impacts of a modified-open fuel cycle (MOC) option as a transition step from the current once-through cycle (OTC) to a full-recycle fuel cycle (FRC) were assessed using the nuclear systems analysis code DANESS. The MOC of interest for this study was mono-recycling of plutonium in light water reactors (LWR-MOX). Two fuel cycle scenarios were evaluated with and without the MOC option: a 2-stage scenario with a direct path from the current fleet to the final FRC, and a 3-stage scenario with the MOC option as a transition step. The FRC reactor (fast reactor) was assumed to deploy in 2050 for both scenarios, and the MOC reactor in the 3-stage scenario was assumed to deploy in 2025. The last LWRs (using either UOX or MOX fuels) come online in 2050 and are decommissioned by 2110. Thus, the FRC is achieved after 2110. The reprocessing facilities were assumed to be available 2 years prior to the deployment of the MOC and FRC reactors with maximum reprocessing capacities of 2000 tHM/yr and 500 tHM/t for LWR-UOX and LWR-MOX used nuclear fuels (UNFs), respectively. Under a 1% nuclear energy demand growth assumption, both scenarios were able to sustain a full transition to the FRC without delay. For the 3-stage scenario, the share of LWR-MOX reactors reaches a peak of 15% of installed capacity, which resulted in 10% lower cumulative uranium consumption and SWU requirements compared to the 2-stage scenario during the transition period. The peak UNF storage requirement decreases by 50% in the 3-stage scenario, largely due to the earlier deployment of the reprocessing plants to support the MOC fuel cycle. (authors)

  6. Household energy use in urban Venezuela: Implications from surveys in Maracaibo, Valencia, Merida, and Barcelona-Puerto La Cruz

    SciTech Connect (OSTI)

    Figueroa, M.J.; Sathaye, J.

    1993-08-01T23:59:59.000Z

    This report identifies the most important results of a comparative analysis of household commercial energy use in Venezuelan urban cities. The use of modern fuels is widespread among all cities. Cooking consumes the largest share of urban household energy use. The survey documents no use of biomass and a negligible use of kerosene for cooking. LPG, natural gas, and kerosene are the main fuels available. LPG is the fuel choice of low-income households in all cities except Maracaibo, where 40% of all households use natural gas. Electricity consumption in Venezuela`s urban households is remarkably high compared with the levels used in households in comparable Latin American countries and in households of industrialized nations which confront harsher climatic conditions and, therefore, use electricity for water and space heating. The penetration of appliances in Venezuela`s urban households is very high. The appliances available on the market are inefficient, and there are inefficient patterns of energy use among the population. Climate conditions and the urban built form all play important roles in determining the high level of energy consumption in Venezuelan urban households. It is important to acknowledge the opportunities for introducing energy efficiency and conservation in Venezuela`s residential sector, particularly given current economic and financial constraints, which may hamper the future provision of energy services.

  7. Energy Comparison Between Conventional and Chilled Water Thermal Storage Air Conditioning Systems

    E-Print Network [OSTI]

    Sebzali, M.; Hussain, H. J.; Ameer, B.

    2010-01-01T23:59:59.000Z

    , encouraged by government subsidies and driven by the rapid and continual expansion in building construction, urban development, and the heavy reliance on Air Conditioning (AC) systems for the cooling of buildings. The Chilled Water Thermal Storage (CWTS...

  8. Linking Water Conservation and Natural Resource Stewardship in the Trinity River Basin

    E-Print Network [OSTI]

    Cathey, James; Locke, Shawn; Feldpausch, A.M.; Parker, I.D.; Frentress, C.; Whiteside, J.; Mason, C.; Wagner, M.

    2007-09-04T23:59:59.000Z

    Water conservation is a critical issue in Texas today. This publication explores the relationship between ecosystem health and land stewardship in the Trinity River Basin. It also describes how responsible land stewardship can be applied in urban...

  9. CHRISTOPHER A. SCOTT Associate Professor Assoc. Research Professor, Water Resources Policy

    E-Print Network [OSTI]

    , infrastructure, policy · Groundwater, irrigation · Urban-wastewater irrigation, water reuse, agricultural for the Advancement of Science, Consultative Group on International Agricultural Research (CGIAR), World Bank and the Indian Council of Agricultural Research (ICAR), and collaborated with Indian and international

  10. Sustainable water supply: rainwater harvesting for multistoried residential apartments in dhaka, bangladesh

    E-Print Network [OSTI]

    Sultana, Farzana

    2009-05-15T23:59:59.000Z

    rainwater harvesting a logical solution for the arsenic contamination of ground water in Bangladesh (Rahman et al. 2003). Also, the increasing population in the urban as well as rural areas is putting increased load on underground aquifers which is evident...

  11. Implications of the market and regulatory environment in China on multinational water companies

    E-Print Network [OSTI]

    Lung, Wen Zheng

    2014-01-01T23:59:59.000Z

    Amidst China's rapid industrialization and urbanization following market-oriented reforms in its economy, the shortcomings of the state-controlled municipal water sector was brought to the fore. The Chinese government ...

  12. Water Quality

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

    Water Quality Water Quality We protect water quality through stormwater control measures and an extensive network of monitoring wells and stations encompassing groundwater, surface...

  13. Cycle-to-cycle control of reconfigurable die sheet metal forming

    E-Print Network [OSTI]

    Vaughan, Chester Dewey

    2004-01-01T23:59:59.000Z

    This research addresses cycle to cycle control as applied to a sheet metal stretch forming process. More specifically, it attempts to validate the use of cycle to cycle (CtC) control for a multiple input-multiple output ...

  14. Effects of rootstocks on grapevine water use

    E-Print Network [OSTI]

    Nord, Julie Michele

    1992-01-01T23:59:59.000Z

    grafted on rootstocks which have been selected for their resistance to disease, parasites and drought. Field studies have shown that some rootstocks are more resistant to drought than others, but these observations are more qualitative than quantitative.... An understanding of how water moves through the soil-plant-atmosphere continuum is important for efficient water use. Water use in three grapevine rootstocks was measured using the heat balance method under well watered (WW) and two drought (DR1 and DR2) cycles...

  15. Scaling the Daytime Urban Heat Island and Urban-Breeze Circulation JULIA HIDALGO

    E-Print Network [OSTI]

    Ribes, Aurélien

    an atmospheric numerical model coupled with an urban surface energy balance (SEB) model. For example, simulations atmospheric Nonhydrostatic Meso- scale (Meso-NH) model (Lafore et al. 1998) with a Town Energy Balance urban parameters chosen were the size of the city, the height of the thermal inversion topping the mixed turbulent

  16. 2007 Urban Remote Sensing Joint Event Application of satellite Remote Sensing for Urban

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2007 Urban Remote Sensing Joint Event Application of satellite Remote Sensing for Urban Risk Analysis: a case study of the 2003 extreme heat wave in Paris Bénédicte Dousset Hawaii Institute@ogs.trieste.it Abstract ­ Satellite observations are used to monitor the August 2003 heat wave in Paris

  17. THE IMPACTS OF URBANIZATION/URBAN DEVELOPMENT IN THE CLIMATE OF PUERTO RICO

    E-Print Network [OSTI]

    Gilbes, Fernando

    THE IMPACTS OF URBANIZATION/URBAN DEVELOPMENT IN THE CLIMATE OF PUERTO RICO Angel R. Torres Valcarcel MPH Ph.D José R. Acosta #380 Roosevelt, Hato Rey Puerto Rico atorresv09@gmail.com A detailed analysis of century-scale climate change for Puerto Rico was done to assess the degree to which some

  18. Iron Speciation in Urban Dust

    SciTech Connect (OSTI)

    E Elzinga; Y Gao; J Fitts; R Tappero

    2011-12-31T23:59:59.000Z

    An improved understanding of anthropogenic impacts on ocean fertility requires knowledge of anthropogenic dust mineralogy and associated Fe speciation as a critical step toward developing Fe solubility models constrained by mineralogical composition. This study explored the utility of micro-focused X-ray absorption spectroscopy ({mu}-XAS) in characterizing the speciation of Fe in urban dust samples. A micro-focused beam of 10 x 7 {micro}m made possible the measurement of the Fe K edge XAS spectra of individual dust particles in the PM5.6 size fraction collected in Newark, New Jersey, USA. Spectral analysis indicated the presence of mixtures of Fe-containing minerals within individual dust particles; we observed significant magnetite content along with other Fe(III)-(hydr)oxide minerals which could not be conclusively identified. Our data indicate that detailed quantitative determination of Fe speciation requires extended energy scans to constrain the types and relative abundance of Fe species present. We observe heterogeneity in Fe speciation at the dust particle level, which underscores the importance of analyzing a statistically adequate number of particles within each dust sample. Where possible, {mu}-XAS measurements should be complemented with additional characterization techniques such as {mu}-XRD and bulk XAS to obtain a comprehensive picture of the Fe speciation in dust materials. X-ray microprobes should be used to complement bulk methods used to determine particle composition, methods that fail to record particle heterogeneity.

  19. Life Cycle Inventory of a CMOS Chip

    E-Print Network [OSTI]

    Boyd, Sarah; Dornfeld, David; Krishnan, Nikhil

    2006-01-01T23:59:59.000Z

    Reichl, H. “Life cycle inventory analysis and identificationAllen, D.T. ; “Life cycle inventory development for waferLife Cycle Inventory of a CMOS Chip Sarah Boyd and David

  20. Sustainability Features of Nuclear Fuel Cycle Options

    E-Print Network [OSTI]

    Passerini, Stefano

    The nuclear fuel cycle is the series of stages that nuclear fuel materials go through in a cradle to grave framework. The Once Through Cycle (OTC) is the current fuel cycle implemented in the United States; in which an ...

  1. Life-cycle Assessment of Semiconductors

    E-Print Network [OSTI]

    Boyd, Sarah B.

    2009-01-01T23:59:59.000Z

    yield. A hybrid life cycle assessment (LCA) model is used;more accurate life-cycle assessment (LCA) of electronicthe purposes of life-cycle assessment (LCA). While it may be

  2. Performance improvement options for the supercritical carbon dioxide brayton cycle.

    SciTech Connect (OSTI)

    Moisseytsev, A.; Sienicki, J. J.; Nuclear Engineering Division

    2008-07-17T23:59:59.000Z

    The supercritical carbon dioxide (S-CO{sub 2}) Brayton cycle is under development at Argonne National Laboratory as an advanced power conversion technology for Sodium-Cooled Fast Reactors (SFRs) as well as other Generation IV advanced reactors as an alternative to the traditional Rankine steam cycle. For SFRs, the S-CO{sub 2} Brayton cycle eliminates the need to consider sodium-water reactions in the licensing and safety evaluation, reduces the capital cost of the SFR plant, and increases the SFR plant efficiency. Even though the S-CO{sub 2} cycle has been under development for some time and optimal sets of operating parameters have been determined, those earlier development and optimization studies have largely been directed at applications to other systems such as gas-cooled reactors which have higher operating temperatures than SFRs. In addition, little analysis has been carried out to investigate cycle configurations deviating from the selected 'recompression' S-CO{sub 2} cycle configuration. In this work, several possible ways to improve S-CO{sub 2} cycle performance for SFR applications have been identified and analyzed. One set of options incorporates optimization approaches investigated previously, such as variations in the maximum and minimum cycle pressure and minimum cycle temperature, as well as a tradeoff between the component sizes and the cycle performance. In addition, the present investigation also covers options which have received little or no attention in the previous studies. Specific options include a 'multiple-recompression' cycle configuration, intercooling and reheating, as well as liquid-phase CO{sub 2} compression (pumping) either by CO{sub 2} condensation or by a direct transition from the supercritical to the liquid phase. Some of the options considered did not improve the cycle efficiency as could be anticipated beforehand. Those options include: a double recompression cycle, intercooling between the compressor stages, and reheating between the turbine stages. Analyses carried out as part of the current investigation confirm the possibilities of improving the cycle efficiency that have been identified in previous investigations. The options in this group include: increasing the heat exchanger and turbomachinery sizes, raising of the cycle high end pressure (although the improvement potential of this option is very limited), and optimization of the low end temperature and/or pressure to operate as close to the (pseudo) critical point as possible. Analyses carried out for the present investigation show that significant cycle performance improvement can sometimes be realized if the cycle operates below the critical temperature at its low end. Such operation, however, requires the availability of a heat sink with a temperature lower than 30 C for which applicability of this configuration is dependent upon the climate conditions where the plant is constructed (i.e., potential performance improvements are site specific). Overall, it is shown that the S-CO{sub 2} Brayton cycle efficiency can potentially be increased to 45 %, if a low temperature heat sink is available and incorporation of larger components (e.g.., heat exchangers or turbomachinery) having greater component efficiencies does not significantly increase the overall plant cost.

  3. Optimization of Air Conditioning Cycling

    E-Print Network [OSTI]

    Seshadri, Swarooph

    2012-10-19T23:59:59.000Z

    on a 3-ton residential air conditioner are then presented to intuitively understand the effect of expansion valve and evaporator fan cycling in a real system. A real time optimization method is explored and the feasibility, recommendations for a...

  4. Fuel cycle code, "FUELMOVE III"

    E-Print Network [OSTI]

    Sovka, Jerry Alois

    1963-01-01T23:59:59.000Z

    Further modifications to the fuel cycle code FUELMOVE are described which were made in an attempt to obtain results for reflected reactors operated under batch, outin, and bidirectional fueling schemes. Numerical methods ...

  5. INTEGRATED PYROLYSIS COMBINED CYCLE BIOMASS POWER SYSTEM CONCEPT DEFINITION

    SciTech Connect (OSTI)

    Eric Sandvig; Gary Walling; Robert C. Brown; Ryan Pletka; Desmond Radlein; Warren Johnson

    2003-03-01T23:59:59.000Z

    Advanced power systems based on integrated gasification/combined cycles (IGCC) are often presented as a solution to the present shortcomings of biomass as fuel. Although IGCC has been technically demonstrated at full scale, it has not been adopted for commercial power generation. Part of the reason for this situation is the continuing low price for coal. However, another significant barrier to IGCC is the high level of integration of this technology: the gas output from the gasifier must be perfectly matched to the energy demand of the gas turbine cycle. We are developing an alternative to IGCC for biomass power: the integrated (fast) pyrolysis/ combined cycle (IPCC). In this system solid biomass is converted into liquid rather than gaseous fuel. This liquid fuel, called bio-oil, is a mixture of oxygenated organic compounds and water that serves as fuel for a gas turbine topping cycle. Waste heat from the gas turbine provides thermal energy to the steam turbine bottoming cycle. Advantages of the biomass-fueled IPCC system include: combined cycle efficiency exceeding 37 percent efficiency for a system as small as 7.6 MW{sub e}; absence of high pressure thermal reactors; decoupling of fuel processing and power generation; and opportunities for recovering value-added products from the bio-oil. This report provides a technical overview of the system including pyrolyzer design, fuel clean-up strategies, pyrolysate condenser design, opportunities for recovering pyrolysis byproducts, gas turbine cycle design, and Rankine steam cycle. The report also reviews the potential biomass fuel supply in Iowa, provide and economic analysis, and present a summery of benefits from the proposed system.

  6. Use and recovery of ammonia in power plant cycles

    SciTech Connect (OSTI)

    Pflug, H.D.; Bettenworth, H.J.; Syring, H.A. [Preussen Elektra AG, Hanover (Germany)

    1995-01-01T23:59:59.000Z

    The paper presents some practical and theoretical aspects of the use of ammonia in power plant water/steam cycles. The plants considered are fully automated units with once-through boilers, which operate under complex conditions and are subject to frequent starts and load changes. The boilers are chemically conditioned with combined oxygen ammonia treatment and the condensate polishing plant is only operated during start-up, in the event of a condenser leak or to remove excess ammonia. The paper also covers the recovery of ammonia from the condensate polishing plant waste regenerants and reuse for conditioning the feedwater. In particular, the paper deals with the following points: theoretical analysis of the chemical equilibrium of ammonia and carbon dioxide in water, including calculation of the concentrations from the parameters normally measured, such as conductivities and pH; equipment for monitoring and controlling the amount of ammonia fed to the water/steam cycle, including the optimum positioning of the sampling and feed-points, the parameters suitable for feed control and their temperature dependence; the partial pressure and distribution coefficient of ammonia; the consumption and losses of ammonia through the water/steam cycle during operation; the recovery of ammonia from condensate polishing plant waste regenerants by steam stripping. The paper should be of interest to both planning engineers and plant operators.

  7. M. Bahrami ENSC 461 (S 11) Stirling Cycle 1 Stirling Cycle

    E-Print Network [OSTI]

    Bahrami, Majid

    M. Bahrami ENSC 461 (S 11) Stirling Cycle 1 Stirling Cycle In Stirling cycle, Carnot cycle). The regenerator is assumed to be reversible heat transfer device. Fig. 3-2: T-s and P-v diagrams for Stirling The Stirling cycle was invented by Robert Stirling in 1816. The execution of the Stirling cycle requires

  8. Economics of Organic Rankine Cycle

    E-Print Network [OSTI]

    O'Brien, W. J.

    Flow Diagram of Rankine Cycle the power recovery. Thus, mechanical simplicity, good efficiency, small size and an inherent reliability make the Organic Rankine Cycle particularly suitable for extraction of power from low temperature waste heat... for recovering waste heat. Based on the waste heat temperature, electricity cost and quantity of heat available, Figure 3 can be used to determine whether a potential project has greater than 20% DCF (discounted cash flow) return (above the line) or less...

  9. Sulfuric acid-sulfur heat storage cycle

    DOE Patents [OSTI]

    Norman, John H. (LaJolla, CA)

    1983-12-20T23:59:59.000Z

    A method of storing heat is provided utilizing a chemical cycle which interconverts sulfuric acid and sulfur. The method can be used to levelize the energy obtained from intermittent heat sources, such as solar collectors. Dilute sulfuric acid is concentrated by evaporation of water, and the concentrated sulfuric acid is boiled and decomposed using intense heat from the heat source, forming sulfur dioxide and oxygen. The sulfur dioxide is reacted with water in a disproportionation reaction yielding dilute sulfuric acid, which is recycled, and elemental sulfur. The sulfur has substantial potential chemical energy and represents the storage of a significant portion of the energy obtained from the heat source. The sulfur is burned whenever required to release the stored energy. A particularly advantageous use of the heat storage method is in conjunction with a solar-powered facility which uses the Bunsen reaction in a water-splitting process. The energy storage method is used to levelize the availability of solar energy while some of the sulfur dioxide produced in the heat storage reactions is converted to sulfuric acid in the Bunsen reaction.

  10. Position Information Job Title Extension Assistant/Associate Professor -Urban Forestry

    E-Print Network [OSTI]

    Watson, Craig A.

    Position Information Job Title Extension Assistant/Associate Professor - Urban Forestry Department field of urban forestry, with a focus on urbanization and changing land use. Potential topics include faculty. Extension responsibilities include developing and coordinating a statewide urban forestry

  11. Cycling operation of fossil plants

    SciTech Connect (OSTI)

    Devendorf, D.; Kulczycky, T.G. (Niagara Mohawk Power Corp., Syracuse, NY (USA))

    1991-05-01T23:59:59.000Z

    A necessity for many utilities today is the cycling of their fossil units. Fossil plants with their higher fuel costs are being converted to cycling operation to accommodate daily load swings and to decrease the overall system fuel costs. For a large oil-fired unit, such as Oswego Steam Station Unit 5, millions of dollars can be saved annually in fuel costs if the unit operates in a two-shift mode. However, there are also penalties attributable to cycling operation which are associated with availability and thermal performance. The objectives of Niagara Mohawk Power Corporation were to minimize the losses in availability and performance, and the degradation in the life of the equipment by incorporating certain cycling modifications into the unit. The objective of this project was to evaluate the effectiveness of three of these cycling modifications: (1) the superheater and turbine bypass (Hot Restart System), (2) the use of variable pressure operation, and (3) the full-flow condensate polishing system. To meet this objective, Unit 5 was tested using the cycling modifications, and a dynamic mathematical model of this unit was developed using the Modular Modeling System (MMS) Code from EPRI. This model was used to evaluate various operating modes and to assist in the assessment of operating procedures. 15 refs., 41 figs., 22 tabs.

  12. Derived Willingness-To-Pay For Water: Effects Of Probabilistic Rationing And Price

    E-Print Network [OSTI]

    Lund, Jay R.

    consumers might be willing to accept a greater frequency of shortages in exchange for reduced water bills, cities have started to argue that the costs of water shortages to the urban/residential sector should, more stringent regulatory requirements and increasing marginal costs of new projects water, shortage

  13. Modeling Harry's Brook Watershed Alexandra Konings, REU 2006 Tracing the Water

    E-Print Network [OSTI]

    Petta, Jason

    for Undergraduates, 2006 #12;Modeling Harry's Brook Watershed Alexandra Konings, REU 2006 Urban Hydrology Water's Storm Water Management Model (SWMM) Solves differential and algebraic equations involved in calculatingModeling Harry's Brook Watershed Alexandra Konings, REU 2006 Tracing the Water: Detailed Modeling

  14. Estimating changes in urban ozone concentrations due to life cycle emissions from hydrogen transportation systems

    E-Print Network [OSTI]

    Wang, Guihua; Ogden, Joan M; Chang, Daniel P.Y.

    2007-01-01T23:59:59.000Z

    production with gaseous hydrogen pipeline delivery, and2) central hydrogen production with pipeline delivery; and (Central hydrogen production with pipeline delivery systems

  15. Estimating changes in urban ozone concentrations due to life cycle emissions from hydrogen transportation systems

    E-Print Network [OSTI]

    Wang, Guihua; Ogden, Joan M; Chang, Daniel P.Y.

    2007-01-01T23:59:59.000Z

    spatial layouts of hydrogen infrastructure were determined.for Building a Hydrogen Energy Infrastructure. ?nal draft

  16. Life-Cycle Costs of Alternative Fuels: Is Biodiesel Cost Competitve for Urban Buses

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let us count theLienert namedLifeProducts

  17. Life Cycle Inventory of Biodiesel and Petroleum Diesel for Use in an Urban Bus

    Office of Scientific and Technical Information (OSTI)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found TheHot electron dynamics in807 DE89 002669Life

  18. Environmental costs and benefits of urban forests

    E-Print Network [OSTI]

    Rose, Michael R.

    regulation Nutrient regulation Supporting service Regulating service Energy use Water use Pollutant emissions water · Fuelwood · Fiber · Biochemicals · Genetic Resources Regulating Services · Climate regulation · Disease regulation · Water regulation · Water purification · Pollination Cultural Services · Spiritual

  19. Constructing a GIS-based 3D urban model using LiDAR and aerial photographs

    E-Print Network [OSTI]

    Lin, Wei-Ming

    2005-02-17T23:59:59.000Z

    ; Rau and Chen 2001; Shiode 2001; Zhou et al. 2004). The 3D urban modeling technique enables urban residents to visualize future urban construction and development. It also supports standard activities of urban design and city planning and allows... of geometric information about urban objects, and it is an efficient tool for designing and creating urban objects (Sinning-Meister et al 1996). The contemporary CAD systems also offer full 3D rendering capability to visualize urban objects and the urban...

  20. Solar hydrogen for urban trucks

    SciTech Connect (OSTI)

    Provenzano, J.: Scott, P.B.; Zweig, R. [Clean Air Now, Northridge, CA (United States)

    1997-12-31T23:59:59.000Z

    The Clean Air Now (CAN) Solar Hydrogen Project, located at Xerox Corp., El Segundo, California, includes solar photovoltaic powered hydrogen generation, compression, storage and end use. Three modified Ford Ranger trucks use the hydrogen fuel. The stand-alone electrolyzer and hydrogen dispensing system are solely powered by a photovoltaic array. A variable frequency DC-AC converter steps up the voltage to drive the 15 horsepower compressor motor. On site storage is available for up to 14,000 standard cubic feet (SCF) of solar hydrogen, and up to 80,000 SCF of commercial hydrogen. The project is 3 miles from Los Angeles International airport. The engine conversions are bored to 2.9 liter displacement and are supercharged. Performance is similar to that of the Ranger gasoline powered truck. Fuel is stored in carbon composite tanks (just behind the driver`s cab) at pressures up to 3600 psi. Truck range is 144 miles, given 3600 psi of hydrogen. The engine operates in lean burn mode, with nil CO and HC emissions. NO{sub x} emissions vary with load and rpm in the range from 10 to 100 ppm, yielding total emissions at a small fraction of the ULEV standard. Two trucks have been converted for the Xerox fleet, and one for the City of West Hollywood. A public outreach program, done in conjunction with the local public schools and the Department of Energy, introduces the local public to the advantages of hydrogen fuel technologies. The Clean Air Now program demonstrates that hydrogen powered fleet development is an appropriate, safe, and effective strategy for improvement of urban air quality, energy security and avoidance of global warming impact. Continued technology development and cost reduction promises to make such implementation market competitive.

  1. A review of stable water isotopeA review of stable water isotope modellingmodelling

    E-Print Network [OSTI]

    Sturm, Christophe "Kristof"

    fractionation · Kinetic fractionation 2. Modelling the stable water isotope cycle · Rayleigh distillation model Institution of Oceanography) Harald SODEMANN (Norwegian Institute for Air Research) Kristof 18Ovapour=-40 18Oocean=0 18Osnow=-3018Orain=-2 Equilibrium fractionationEquilibrium fractionation

  2. Development of the Hybrid Sulfur Thermochemical Cycle

    SciTech Connect (OSTI)

    Summers, William A.; Steimke, John L

    2005-09-23T23:59:59.000Z

    The production of hydrogen via the thermochemical splitting of water is being considered as a primary means for utilizing the heat from advanced nuclear reactors to provide fuel for a hydrogen economy. The Hybrid Sulfur (HyS) Process is one of the baseline candidates identified by the U.S. Department of Energy [1] for this purpose. The HyS Process is a two-step hybrid thermochemical cycle that only involves sulfur, oxygen and hydrogen compounds. Recent work has resulted in an improved process design with a calculated overall thermal efficiency (nuclear heat to hydrogen, higher heating value basis) approaching 50%. Economic analyses indicate that a nuclear hydrogen plant employing the HyS Process in conjunction with an advanced gas-cooled nuclear reactor system can produce hydrogen at competitive prices. Experimental work has begun on the sulfur dioxide depolarized electrolyzer, the major developmental component in the cycle. Proof-of-concept tests have established proton-exchange-membrane cells (a state-of-the-art technology) as a viable approach for conducting this reaction. This is expected to lead to more efficient and economical cell designs than were previously available. Considerable development and scale-up issues remain to be resolved, but the development of a viable commercial-scale HyS Process should be feasible in time to meet the commercialization schedule for Generation IV gas-cooled nuclear reactors.

  3. Great Lakes Ice Cycle Primary Investigator: Raymond Assel -NOAA GLERL (Emeritus)

    E-Print Network [OSTI]

    Great Lakes Ice Cycle Primary Investigator: Raymond Assel - NOAA GLERL (Emeritus) Co Board The formation, duration, and extent of ice cover on the Great Lakes has a major impact and cooling water intakes, and damaging shoreline structures. The ice cover also has an impact on the water

  4. Diurnal to annual variations in the atmospheric water cycle

    E-Print Network [OSTI]

    Ruane, Alexander C.

    2007-01-01T23:59:59.000Z

    2004 SFM power spectra at Darwin, Australia, of (a) surfacepower spectra for example variables at ARM SGP.83 Figure 3.4 As in Figure 3.2, but for Darrwin, Australia ..

  5. Carbon and Water Cycling in a Texas Hill Country Woodland 

    E-Print Network [OSTI]

    Kamps, Ray Herbert

    2014-12-11T23:59:59.000Z

    Two tree species, Plateau live oak (Quercus fusiformis) and Ashe juniper (Juniperus ashei) survive and thrive in a dense woodland on thin soil overlying massive limestone formations in the Texas Hill Country with recurrent annual summer drought...

  6. Architecture of the rail : exploring the potential of urban infrastructure

    E-Print Network [OSTI]

    Iboshi, Gregory Kenji

    1994-01-01T23:59:59.000Z

    This thesis is the pursuit of a sensitivity for the relationship between urban infrastructure and architectural form, an attempt to restore a quality of "publicness" in the urban landscape through the implementation of a ...

  7. Transportation planning for mega events : a model of urban change

    E-Print Network [OSTI]

    Kassens, Eva

    2009-01-01T23:59:59.000Z

    My study is about opportunities for revolutionary developments in urban transport. Often, we think of transport and urban development as an evolutionary process, yet there exist a few opportunities for cities to revolutionize ...

  8. Digital places : rethinking urban elements : the case of the tower

    E-Print Network [OSTI]

    Gichuhi, Christopher M. (Christopher Mwethera), 1976-

    2004-01-01T23:59:59.000Z

    Problem - How can we make working, living and all aspects of our life in the urban tower more palatable? How can we create environment at the urban tower scale. With technology as one of the biggest drivers of social and ...

  9. Modernity of Chinese urban neighborhoods : toward new spatial forms

    E-Print Network [OSTI]

    Yi, Qian, 1973-

    2002-01-01T23:59:59.000Z

    There is always a general dilemma about how to balance technology and humanity in urban neighborhood development. Modem technology creates many new spatial forms for Chinese urban neighborhoods, but it also destroys many ...

  10. Exploding the edge : inversions into the urban landscape

    E-Print Network [OSTI]

    Chia, Katherine Kai-sun

    1991-01-01T23:59:59.000Z

    This thesis explores the relationship between building and green space in a dense urban environment in order to create a humane contemplative experience of individual and collective memory. The urban environment has the ...

  11. Effects of urbanization on stream channel morpology, Madisonville, Texas

    E-Print Network [OSTI]

    Harris, Daniel Lee

    2002-01-01T23:59:59.000Z

    This thesis investigates the effects of urban development on two small streams near Madisonville, Texas. One stream is natural and used as a control against which Town Branch, the urbanized stream, is compared. Changes in width, depth, and channel...

  12. Approximate translation : media, narrative, and experience in urban design

    E-Print Network [OSTI]

    Crisman, Jonathan

    2013-01-01T23:59:59.000Z

    Approximate translation is developed as a design process through which the place-embedded history of an urban environment can be understood, allowing for better design and intervention in that urban environment. Generally, ...

  13. IS URBAN LOGISTICS POOLING VIABLE? A MULTISTAKEHOLDER MULTICRITERIA ANALYSIS

    E-Print Network [OSTI]

    Boyer, Edmond

    IS URBAN LOGISTICS POOLING VIABLE? A MULTISTAKEHOLDER MULTICRITERIA ANALYSIS Jesus Gonzalez. Urban consolidation and logistics sharing. III. Multi-stakeholder mutli-criteria methodology. A of application. V. Conclusion. ABSTRACT Collaborative transportation and logistics pooling are relatively new

  14. alleviating urban energy: Topics by E-print Network

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

    2012-11-29 17 Operational energy consumption and GHG emissions in residential sector in urban China : an empirical study in Jinan MIT - DSpace Summary: Driven by rapid urbanization...

  15. Insects in urban brownfields Analyses of species occurrences,

    E-Print Network [OSTI]

    Kleyer, Michael

    Insects in urban brownfields Analyses of species occurrences, community composition, and trait brownfields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.4 Habitat models forces for insects in urban brownfields 41 4.1 Introduction

  16. Camera for the invisible : toward a toolkit for urban exploration

    E-Print Network [OSTI]

    Silver, Jay (Jay Saul)

    2008-01-01T23:59:59.000Z

    We are disconnected from our environment. We can't reconnect because we can't even see the Nature within our urban surroundings. Inspired by urban explorers and Nature Awareness traditions, I will develop methodologies and ...

  17. Hydrogen Cars and Water Vapor

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    misidentified as "zero-emissions vehicles." Fuel cell vehicles emit water vapor. A global fleet could have, with discernible effects on people and ecosystems. The broad environmental effects of fuel cell vehicles. This cycle is currently under way with hydrogen fuel cells. As fuel cell cars are suggested as a solution

  18. Lakeside: Merging Urban Design with Scientific Analysis

    SciTech Connect (OSTI)

    Guzowski, Leah; Catlett, Charlie; Woodbury, Ed

    2014-10-08T23:59:59.000Z

    Researchers at the U.S. Department of Energy's Argonne National Laboratory and the University of Chicago are developing tools that merge urban design with scientific analysis to improve the decision-making process associated with large-scale urban developments. One such tool, called LakeSim, has been prototyped with an initial focus on consumer-driven energy and transportation demand, through a partnership with the Chicago-based architectural and engineering design firm Skidmore, Owings & Merrill, Clean Energy Trust and developer McCaffery Interests. LakeSim began with the need to answer practical questions about urban design and planning, requiring a better understanding about the long-term impact of design decisions on energy and transportation demand for a 600-acre development project on Chicago's South Side - the Chicago Lakeside Development project.

  19. Lakeside: Merging Urban Design with Scientific Analysis

    ScienceCinema (OSTI)

    Guzowski, Leah; Catlett, Charlie; Woodbury, Ed

    2014-11-18T23:59:59.000Z

    Researchers at the U.S. Department of Energy's Argonne National Laboratory and the University of Chicago are developing tools that merge urban design with scientific analysis to improve the decision-making process associated with large-scale urban developments. One such tool, called LakeSim, has been prototyped with an initial focus on consumer-driven energy and transportation demand, through a partnership with the Chicago-based architectural and engineering design firm Skidmore, Owings & Merrill, Clean Energy Trust and developer McCaffery Interests. LakeSim began with the need to answer practical questions about urban design and planning, requiring a better understanding about the long-term impact of design decisions on energy and transportation demand for a 600-acre development project on Chicago's South Side - the Chicago Lakeside Development project.

  20. Origin of Park City (Phosphoria) cycles in Bighorn basin

    SciTech Connect (OSTI)

    Inden, R.; Dean, J.S.

    1986-08-01T23:59:59.000Z

    The Franson and Ervay cycles of the Permian Park City Formation in the Bighorn basin developed in response to both eustatic fluctuations and the changing climatic regimes associated with these fluctuations. The basal phosphatic shales (Meade Park and Retort members) and cherty siltstones (Rex and Tosi cherts) in these cycles were deposited during major transgressive events under the influence of cold, upwelling, deep oceanic currents and semitropical/tropical climatic conditions. The overlying carbonate units (Franson and Ervay Members) were deposited during sea level stabilization and regional marine regressions in warm marine waters and under hot, arid climatic conditions. During these periods of carbonate deposition, shallow marine ramp systems developed. Widespread, low-energy, restricted-marine environments extends across most of the Bighorn basin, except to the southwest, where normal marine environments existed, and along the east flank of the basin, where peritidal carbonates and lagoonal/salina red beds and evaporites developed. The smaller clastic/carbonate cycles that comprise the Franson and Ervay members developed during minor sea level changes and as a result of shifts in the major water currents in the basin and the normal short-term processes involved in shoal development and destruction. The imprint of the varying climatic conditions on these sequences is manifest in the vertical decrease in clastic content and gradation from more normal marine to restricted marine carbonate facies upward through all cycles, the development of tepee structures and then dissolution features in peritidal deposits, and the precipitation of evaporites in the lagoonal sequences.