Sample records for daylighting ground source

  1. Lighting system combining daylight concentrators and an artificial source

    DOE Patents [OSTI]

    Bornstein, Jonathan G. (Miami, FL); Friedman, Peter S. (Toledo, OH)

    1985-01-01T23:59:59.000Z

    A combined lighting system for a building interior includes a stack of luminescent solar concentrators (LSC), an optical conduit made of preferably optical fibers for transmitting daylight from the LSC stack, a collimating lens set at an angle, a fixture for receiving the daylight at one end and for distributing the daylight as illumination inside the building, an artificial light source at the other end of the fixture for directing artifical light into the fixture for distribution as illumination inside the building, an automatic dimmer/brightener for the artificial light source, and a daylight sensor positioned near to the LSC stack for controlling the automatic dimmer/brightener in response to the daylight sensed. The system also has a reflector positioned behind the artificial light source and a fan for exhausting heated air out of the fixture during summer and for forcing heated air into the fixture for passage into the building interior during winter.

  2. MODELING, SIMULATION AND OPTIMIZATION OF GROUND SOURCE

    E-Print Network [OSTI]

    MODELING, SIMULATION AND OPTIMIZATION OF GROUND SOURCE HEAT PUMP SYSTEMS By MUHAMMAD HAIDER KHAN AND OPTIMIZATION OF GROUND SOURCE HEAT PUMP SYSTEMS Thesis Approved..................................................................................................................... 1 1.1 Overview of Ground Source Heat Pump Systems.............................................. 1 1

  3. IMPLEMENTING GROUND SOURCE HEAT PUMP AND GROUND LOOP HEAT EXCHANGER

    E-Print Network [OSTI]

    IMPLEMENTING GROUND SOURCE HEAT PUMP AND GROUND LOOP HEAT EXCHANGER MODELS IN THE ENERGYPLUS #12;ii IMPLEMENTING GROUND SOURCE HEAT PUMP AND GROUND LOOP HEAT EXCHANGER MODELS IN THE ENERGYPLUS............................................................... 2 1.3. Overview of the Parameter Estimation Water-to-Water Heat Pump Model ........... 5 1

  4. Daylighting Basics

    Broader source: Energy.gov [DOE]

    Daylighting is the use of windows and skylights to bring sunlight into buildings. Daylighting in businesses and commercial buildings can result in substantial savings on electric bills, and not only provides a higher quality of light but also improves productivity and health.

  5. MODELING OF VERTICAL GROUND LOOP HEAT EXCHANGERS FOR GROUND SOURCE

    E-Print Network [OSTI]

    MODELING OF VERTICAL GROUND LOOP HEAT EXCHANGERS FOR GROUND SOURCE HEAT PUMP SYSTEMS By CENK SOURCE HEAT PUMP SYSTEMS Thesis Approved: ___________________________________________ Thesis Adviser scale test data. The short-term behavior of ground-coupled heat pump systems is important for the design

  6. THE DAYLIGHTING SOLUTION

    E-Print Network [OSTI]

    Selkowitz, Stephen

    2013-01-01T23:59:59.000Z

    of modulating sunlight and daylight. By intercepting directto the building owner. Daylight and sunlight have alwaysuse. While the use of daylight in homes is not seen as a

  7. North Village Ground Source Heat Pumps

    Broader source: Energy.gov [DOE]

    Overview: Installation of Ground Source Heat Pumps. Replacement of Aging Heat Pumps. Alignment with Furman恠 Sustainability Goals.

  8. Daylighting Calculation in DOE-2

    E-Print Network [OSTI]

    Winkelmann, F.C

    2013-01-01T23:59:59.000Z

    4 2.3 Daylight46 3.2.1 Exterior Daylight Availabilityof Interior Daylight Illuminance . . . . . . . . . . ..21

  9. MANDATORY MEASURES DAYLIGHTING

    E-Print Network [OSTI]

    California at Davis, University of

    MANDATORY MEASURES DAYLIGHTING Reference: Sub-Chapter 4, Section 130.1(d) #12;SECTION 4 Daylighting daylighting controls. 路 Lighting in daylit zones should have multi-level steps, per Table 130.1-A 路 Light levels provided at night should be available at all other times 路 When sufficient daylight is available

  10. MANDATORY MEASURES DAYLIGHTING

    E-Print Network [OSTI]

    California at Davis, University of

    MANDATORY MEASURES DAYLIGHTING Reference: Sub-Chapter 4, Section 130.1(d) #12;SECTION 5 Daylighting daylighting controls. 路 Lighting in daylit zones should have multi-level steps, per Table 130.1-A 路 Light levels provided at night should be available at all other times 路 When sufficient daylight is available

  11. MODELING, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP

    E-Print Network [OSTI]

    MODELING, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS Thesis Approved by: Dr.................................................................................................................... 16 MODELING OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS

  12. DAYLIGHTING DIRECTORY 1/1980

    E-Print Network [OSTI]

    ,

    2012-01-01T23:59:59.000Z

    shell for passive heating or cooling and daylight. -To consider daylight as having a major contribution inStr. 'NARY PROVIDING A DAYLIGHT ANALYSIS SERVICE USING

  13. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    lighting energy use under daylight linked lighting controls.simulation of annual daylight illumi- nance distributions 朼nd J. Mardaljevic. Useful daylight illuminances: A replace-

  14. Data Analysis from Ground Source Heat Pump Demonstration Projects...

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

    Analysis from Ground Source Heat Pump Demonstration Projects Data Analysis from Ground Source Heat Pump Demonstration Projects Comparison of building energy use before and after...

  15. Ball State University Completes Nation's Largest Ground-Source...

    Office of Environmental Management (EM)

    University Completes Nation's Largest Ground-Source Geothermal System with Support from Recovery Act Ball State University Completes Nation's Largest Ground-Source Geothermal...

  16. Light and Energy -Daylight measurements

    E-Print Network [OSTI]

    Light and Energy - Daylight measurements #12;Light and Energy - Daylight measurements Authors: Jens;3 Title Light and Energy Subtitle Daylight measurements Authors Jens Christoffersen, 脕sta Logad贸ttir ........................................................................................................ 5 Daylight quantity

  17. Empirical assessment of a prismatic daylight-redirecting window film in a full-scale office testbed

    E-Print Network [OSTI]

    Thanachareonkit, Anothai

    2014-01-01T23:59:59.000Z

    Jonsson JC. 2013. Daylight performance of a microstructuredH. Device for guiding daylight, US Patent 4,654,243 (JL, Selkowitz S. 2000. Daylight in buildings: A source book

  18. MANDATORY MEASURES DAYLIGHTING

    E-Print Network [OSTI]

    California at Davis, University of

    MANDATORY MEASURES DAYLIGHTING Reference: Sub-Chapter 4, Section 130.1(d) #12;SECTION 4 MINIMUM DAYLIGHTING FOR LARGE SPACES Large enclosed spaces, such as large retail warehouses, are required to have a minimum amount of daylight available when using the prescriptive method of compliance. The minimum

  19. PERFORMANCE MODELING OF DAYLIGHT INTEGRATED PHOTOSENSOR- CONTROLLED LIGHTING SYSTEMS

    E-Print Network [OSTI]

    S. Jain; R. R. Creasey; J. Himmelspach; K. P. White; M. Fu; Richard G. Mistrick

    Some building energy codes now require the incorporation of daylight into buildings and automatic photosensor-controlled switching or dimming of the electric lighting system in areas that receive daylight. This paper describes enhancements to the open-source Daysim daylight analysis software that permit users to model a photosensor control system as it will perform in a real space, considering the directional sensitivity of the photosensor, its mounting position, the space and daylight aperture geometry, window shading configuration; the electric lighting equipment and control zones; exterior obstructions; and site weather conditions. System output includes assessment of the daylight distribution in a space throughout the year, the photosensor抯 ability to properly track the daylight and modify electric lighting system output, and the energy savings provided by the modeled control system. The application of daylight coefficients permits annual simulations to be conducted efficiently using hourly or finer weather data time increments. 1

  20. ADVANCES IN MODELING OF GROUND-SOURCE HEAT

    E-Print Network [OSTI]

    ADVANCES IN MODELING OF GROUND-SOURCE HEAT PUMP SYSTEMS By ANDREW D. CHIASSON Bachelor of Applied 1999 #12;ii ADVANCES IN MODELING OF GROUND-SOURCE HEAT PUMP SYSTEMS Thesis Approved: Thesis Adviser..............................................................................................................1 1.1. Overview of Ground-Source Heat Pump Systems ..............................................1 1

  1. APPLICATIONS OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS TO

    E-Print Network [OSTI]

    APPLICATIONS OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS TO BUILDINGS AND BRIDGE DECKS. By MAHADEVAN Chapter Page 1. Introduction 1.1. Overview of hybrid ground source heat pump systems 1.2. Literature review 1.3. Thesis objective and scope 2. Optimal sizing of hybrid ground source heat pump system

  2. DESIGN OF AN EXPERIMENTAL FACILITY FOR HYBRID GROUND SOURCE HEAT

    E-Print Network [OSTI]

    DESIGN OF AN EXPERIMENTAL FACILITY FOR HYBRID GROUND SOURCE HEAT PUMP SYSTEMS By SHAWN ALEX HERN.1 HYBRID GROUND SOURCE HEAT PUMP SYSTEM DESIGN........................................2-3 2.1.1 Design...............................................................................2-5 2.2 HYBRID GROUND SOURCE HEAT PUMP SYSTEM SIMULATION................................2-9 3

  3. Energy 101: Daylighting

    Office of Energy Efficiency and Renewable Energy (EERE)

    Daylighting梩he use of windows or skylights for natural lighting and temperature regulation梚s one building strategy that can save money for homeowners and businesses.

  4. Daylight in Guinea-Bissau

    E-Print Network [OSTI]

    Hall, Hiram

    1975-01-01T23:59:59.000Z

    MYLIGfi Iii GJU-BISSAU by HIRAM HALL daylightdaylight of dawning dextrose of my goad the rapidsdreams of~ soul. daylight daylight of my dawning may i wrap

  5. Energy 101: Daylighting

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    Daylighting梩he use of windows or skylights for natural lighting and temperature regulation梚s one building strategy that can save money for homeowners and businesses. Highly efficient, strategically placed windows maximize the use of natural daylight in a building, lowering the need for artificial lighting without causing heating or cooling problems.

  6. Energy 101: Daylighting

    ScienceCinema (OSTI)

    None

    2013-05-29T23:59:59.000Z

    Daylighting?the use of windows or skylights for natural lighting and temperature regulation?is one building strategy that can save money for homeowners and businesses. Highly efficient, strategically placed windows maximize the use of natural daylight in a building, lowering the need for artificial lighting without causing heating or cooling problems.

  7. Ground-Source Heat Pumps in Cold Climates

    E-Print Network [OSTI]

    Wagner, Diane

    Ground-Source Heat Pumps in Cold Climates The Current State of the Alaska Industry, a Review-Source Heat Pumps in Cold Climates The Current State of the Alaska Industry, a Review of the Literature and contributions from individuals and organizations involved in ground-source heat pump installation around Alaska

  8. Monitoring SERC Technologies 桮eothermal/Ground Source Heat Pumps

    Broader source: Energy.gov [DOE]

    A webinar by National Renewable Energy Laboratory Project Leader Dave Peterson about Geothermal/Ground Source Heat Pumps and how to properly monitor its installation.

  9. Optimal Ground-Source Heat Pump System Design

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

    Ground-Source Heat Pump System Design May 19, 2010 Geothermal Technologies Program 2010 Peer Review ENVIRON International PI : Metin Ozbek Track : GSHP Demonstration Projects This...

  10. Lighting and Daylight Harvesting

    E-Print Network [OSTI]

    Bos, J.

    2011-01-01T23:59:59.000Z

    exposing us to the latest products and technologies. Daylight Harvesting A system of controlling the direction and the quantity of light both natural and artificial within a given space. This implies: Control of fenestration in terms of size..., transmission and direction. Control of reflected light within a space. Control of electric light in terms of delivery and amount Daylight harvesting systems are typically designed to maintain a minimum recommended light level. This light level...

  11. Train-the-Trainer As ground source heat

    E-Print Network [OSTI]

    Train-the-Trainer As ground source heat pumps capture more of the HVAC market, the need will also receive a copy of the Closed-Loop/ Ground- Source Heat Pump Systems Installation Guide Soils and Rock Identification Pump and Fluid Selection Registration information You must be an IGSHPA

  12. Marketing Ground Source Heat Pump Advanced Applications that

    E-Print Network [OSTI]

    Marketing Ground Source Heat Pump Advanced Applications that Deliver Competitive Advantage Al is the fastest growing market with the available capital and need for the benefits of ground source heat pumps Heating ... and Cooling n Comfort & Indoor Air Quality n Homes have domestic hot water - DHW n Less

  13. SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT

    E-Print Network [OSTI]

    SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS By XIAOWEI XU Bachelor #12;ii SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS Dissertation Approved as co- advisor of this research project. His many years of building system simulation experience

  14. Ground-source Heat Pumps Applied to Commercial Buildings

    SciTech Connect (OSTI)

    Parker, Steven A.; Hadley, Donald L.

    2009-07-14T23:59:59.000Z

    Ground-source heat pumps can provide an energy-efficient, cost-effective way to heat and cool commercial facilities. While ground-source heat pumps are well established in the residential sector, their application in larger, commercial-style, facilities is lagging, in part because of a lack of experience with the technology by those in decision-making positions. Through the use of a ground-coupling system, a conventional water-source heat pump design is transformed to a unique means of utilizing thermodynamic properties of earth and groundwater for efficient operation throughout the year in most climates. In essence, the ground (or groundwater) serves as a heat source during winter operation and a heat sink for summer cooling. Many varieties in design are available, so the technology can be adapted to almost any site. Ground-source heat pump systems can be used widely in commercial-building applications and, with proper installation, offer great potential for the commercial sector, where increased efficiency and reduced heating and cooling costs are important. Ground-source heat pump systems require less refrigerant than conventional air-source heat pumps or air-conditioning systems, with the exception of direct-expansion-type ground-source heat pump systems. This chapter provides information and procedures that an energy manager can use to evaluate most ground-source heat pump applications. Ground-source heat pump operation, system types, design variations, energy savings, and other benefits are explained. Guidelines are provided for appropriate application and installation. Two case studies are presented to give the reader a sense of the actual costs and energy savings. A list of manufacturers and references for further reading are included for prospective users who have specific or highly technical questions not fully addressed in this chapter. Sample case spreadsheets are provided in Appendix A. Additional appendixes provide other information on the ground-source heat pump technology.

  15. Abstract A Hierarchical Algorithm for Radiosity Daylighting

    E-Print Network [OSTI]

    Gonzalo Besuievsky; Ignacio Martin

    A new daylight simulation method for radiosity environments is presented. Daylight illumination is transported in a first step where sun and sky are represented as a set of directional sources. Light is transported using parallel projections of these sources. The scene mesh is adaptively subdivided using energy and visibility criteria obtained from a extended scan-line algorithm that computes a layered depth image for each projection. In a second step, diffuse intereflection is computed through a hierarchical Monte Carlo radiosity algorithm. The method is feasible for it extension for environments containing specular surfaces. Relative short time view-independent global illumination results can be obtained with the proposed method, which make it suitable for daylight building design and analysis applications for both indoors and outdoors environments. 1

  16. CALIFORNIA ENERGY Daylighting In Schools

    E-Print Network [OSTI]

    CALIFORNIA ENERGY COMMISSION Daylighting In Schools: Reanalysis Report TECHNICALREPORT October 2003 Departments, JimVan Dame of My-Lite Daylighting Systems and Products, Doug Gehring of Celotex, Ivan Johnson

  17. DAYLIGHTING DIRECTORY 1/1980

    E-Print Network [OSTI]

    ,

    2012-01-01T23:59:59.000Z

    Lighting Design and ~ylight:ing and Passive Solar Buildin. ~Design and Applications, Febo and Kiarch, 1979. "Daylighting and Passive SolarPassive Solar Conference, pp. 271 - 281, January 1979. TERNOEY, STEVEN "Daylighting Design

  18. Neural daylight control system

    E-Print Network [OSTI]

    Grif, Horatiu Stefan

    2010-01-01T23:59:59.000Z

    The paper describes the design, the implementation of a neural controller used in an automatic daylight control system. The automatic lighting control system (ALCS) attempt to maintain constant the illuminance at the desired level on working plane even if the daylight contribution is variable. Therefore, the daylight will represent the perturbation signal for the ALCS. The mathematical model of process is unknown. The applied structure of control need the inverse model of process. For this purpose it was used other artificial neural network (ANN) which identify the inverse model of process in an on-line manner. In fact, this ANN identify the inverse model of process + the perturbation signal. In this way the learning signal for neural controller has a better accuracy for the present application.

  19. The New York Times headquarters daylighting mockup: Monitored performance of the daylighting control system

    E-Print Network [OSTI]

    Lee, Eleanor S.; Selkowitz, Stephen E.

    2006-01-01T23:59:59.000Z

    1999. 揂nalysis of Daylight Responsive Dimming Systemglare and increase daylight, and 2) Area B had digitalthe stair to approximate the daylight contributions from the

  20. Combined permeable pavement and ground source heat pump systems

    E-Print Network [OSTI]

    Grabowiecki, Piotr

    2010-01-01T23:59:59.000Z

    The PhD thesis focuses on the performance assessment of permeable pavement systems incorporating ground source heat pumps (GSHP). The relatively high variability of temperature in these systems allows for the survival of pathogenic organisms within...

  1. Optimal Design for a Hybrid Ground-Source Heat Pump

    E-Print Network [OSTI]

    Yu, Z.; Yuan, X.; Wang, B.

    2006-01-01T23:59:59.000Z

    Although the advantages of ground-source heat pumps over their conventional alternatives make these systems a very attractive choice for air conditioning, not only for residential buildings but increasingly also for institutional and commercial...

  2. Ground Source Solutions | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating AGeothermal/ExplorationGoods | OpenInformationMagnetics Jump to:Ground

  3. Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    quantitative performance indicators of daylight sufficiency?assumptions of existing daylighting performance indicators.existing daylight performance indicators overestimated the

  4. Application analysis of ground source heat pumps in building space conditioning

    E-Print Network [OSTI]

    Qian, Hua

    2014-01-01T23:59:59.000Z

    for ground-source heat pumps. in ASHRAE Summer Meeting.savings of ground source heat pump systems in Europe: Afor ground-source heat pumps: A literature review,

  5. Daylighting Calculation in DOE-2

    E-Print Network [OSTI]

    Winkelmann, F.C

    2013-01-01T23:59:59.000Z

    46 3.2.2 Luminous Efficacy of Solar Radiation . . . . . . .The Availability of Solar Radiation. and Daylight",incidence TSOLNM for solar radiation. TSOLDF =

  6. Advanced fenestration systems for improved daylight performance

    E-Print Network [OSTI]

    Selkowitz, S.; Lee, E.S.

    1998-01-01T23:59:59.000Z

    Systems for Improved Daylight Performance S. Selkowitz, E.S.Systems for Improved Daylight Performance S. Selkowitz, E.S.Introduction The use of daylight to replace or supplement

  7. Daylighting Islais Creek : a feasibility study

    E-Print Network [OSTI]

    Jencks, Rosey; Leonardson, Rebecca

    2004-01-01T23:59:59.000Z

    for daylighting the creek and other green infrastructure.Daylighting Islais Creek for stormwater conveyance wouldGlen Park Cayuga Islais Creek Runoff Elev. Slope coeff.

  8. Overcoming Barriers to Ground Source Heat Pumps in California

    E-Print Network [OSTI]

    by consumers, industry and, government and high first costs. Compared to other states, California also has heat pump's constant lowlevel usage of electricity. 路 Integrate ground source heat pumps formally. It would increase energy efficiency of buildings, dramatically reduce fossil fuel consumption, reduce

  9. Daylighting | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility Database DataDatatechnic InternationalMontana:Heights,Daylighting

  10. A capital cost comparison of commercial ground-source heat pump systems

    SciTech Connect (OSTI)

    Rafferty, K.

    1994-06-01T23:59:59.000Z

    The report provides a capital cost comparison of commercial ground source heat pump systems. The study includes groundwater systems, ground-coupled systems and hybrid systems.

  11. The Lightswitch Wizard -- reliable daylight simulations

    E-Print Network [OSTI]

    For Initial Design; C. F. Morrison; M. Dubrous; C. F. Reinhart ?; M. Morrison; F. Dubrous

    A web-based, non-expert daylighting analysis tool has been developed to support daylighting-related design decisions in peripheral private offices during an early design stage (http://buildwiz.com). The tool offers a comparative, reliable, and fast analysis of the annual amount of daylight in the offices (daylight factor and daylight autonomy) and the lighting energy performance of automated lighting controls (occupancy sensors, photocells) compared to standard on/off switches. Blinds are either manually or automatically controlled.

  12. Technology reviews: Daylighting optical systems

    SciTech Connect (OSTI)

    Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

    1992-09-01T23:59:59.000Z

    We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize the state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology. Determine the performance range of available technologies. Identify the most promising technologies and promising trends in technology advances. Examine market forces and market trends.Develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fall into that class.

  13. DAYLIGHTING METRICS: IS THERE A RELATION BETWEEN USEFUL DAYLIGHT ILLUMINANCE AND DAYLIGHT GLARE PROBABILITY?

    E-Print Network [OSTI]

    J. Mardaljevic; M. Andersen; N. Roy; J. Christoffersen

    The establishment of climate-based daylight modelling within research and practice has led to a fundamental reassessment of both the basis and purpose of daylight metrics. Whilst there is no consensus yet on the precise nature of the metric(s) that should replace the daylight factor, it is generally agreed that these should be founded on climate-based daylight modelling (CBDM). In this paper we examine the relation between the predicted annual occurrence of glare and one of the candidate CBDM metrics that has been proposed, called useful daylight illuminance (UDI). The purpose is to determine if one or more of the UDI metrics (predicted for the horizontal workplane) could serve as a proxy for the probability of daylight glare (i.e. a measure of vertical illuminance received at the eye). For glare we use the simplified daylight glare probability model. The setting is a residential building which we use as a 憊irtual laboratory in two design configurations, each evaluated under all 32 combinations of 8 European climates and 4 building orientations.

  14. Integrating automated shading and smart glazings with daylight controls

    E-Print Network [OSTI]

    Selkowitz, Stephen; Lee, Eleanor

    2004-01-01T23:59:59.000Z

    Effect of Venetian Blinds on Daylight Photoelectric Controland Smart Glazings with Daylight Controls Stephen Selkowitzwith the outdoors and daylight to enhance the quality of the

  15. Singapore's Zero-Energy Building's daylight monitoring system

    E-Print Network [OSTI]

    Grobe, Lars

    2010-01-01T23:59:59.000Z

    A and Mardaljevic J, Useful daylight illuminance: a newparadigm for assessing daylight in buildings, LightingJ and Rogers Z, Dynamic daylight performance metrics for

  16. CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH A PROGRAMMABLE HAND CALCULATOR

    E-Print Network [OSTI]

    Bryan, Harvey J.

    2013-01-01T23:59:59.000Z

    Committee E-3.2, "Daylight: International RecommendationsCalculation of Natural Daylight," CIE PUBLICATION No. 16,Committee E-3.2, "Natural Daylight: Official Recommenda-

  17. CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH A PROGRAMMABLE HAND CALCULATOR

    E-Print Network [OSTI]

    Bryan, Harvey J.

    2013-01-01T23:59:59.000Z

    Committee E-3.2, "Daylight: International Recommendationsthe Calculation of Natural Daylight, 11 CIE PUBLICATION No.Committee E-3.2 1 "Natural Daylight: Official Recommenda-

  18. UNIVERSITY OF CALIFORNIA, SAN DIEGO Acoustic Daylight: passive acoustic imaging

    E-Print Network [OSTI]

    Buckingham, Michael

    UNIVERSITY OF CALIFORNIA, SAN DIEGO Acoustic Daylight: passive acoustic imaging using ambient noise ............................................................................................... xviii SECTION 1: INTRODUCTION Chapter 1: Acoustic Daylight......................................................................... 1 1.2 Acoustic Daylight

  19. Daylighting Calculation in DOE-2

    E-Print Network [OSTI]

    Winkelmann, F.C

    2013-01-01T23:59:59.000Z

    the sequence: d. space reference point exterior wall windowsystem (BCS). space system to Begin Exterior Wall Loop (1)least one daylit space. 3.2.1 Exterior Daylight Availability

  20. Ground-source heat pump case studies and utility programs

    SciTech Connect (OSTI)

    Lienau, P.J.; Boyd, T.L.; Rogers, R.L.

    1995-04-01T23:59:59.000Z

    Ground-source heat pump systems are one of the promising new energy technologies that has shown rapid increase in usage over the past ten years in the United States. These systems offer substantial benefits to consumers and utilities in energy (kWh) and demand (kW) savings. The purpose of this study was to determine what existing monitored data was available mainly from electric utilities on heat pump performance, energy savings and demand reduction for residential, school and commercial building applications. In order to verify the performance, information was collected for 253 case studies from mainly utilities throughout the United States. The case studies were compiled into a database. The database was organized into general information, system information, ground system information, system performance, and additional information. Information was developed on the status of demand-side management of ground-source heat pump programs for about 60 electric utility and rural electric cooperatives on marketing, incentive programs, barriers to market penetration, number units installed in service area, and benefits.

  1. Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    of Task 21 / Annex 29, Daylight in Buildings. October, 1997.Energy performance of daylight-linked automatic lightingField Commissioning of a daylight-dimming lighting system.

  2. Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2011-01-01T23:59:59.000Z

    of Task 21 / Annex 29, Daylight in Buildings. October, 1997.Energy performance of daylight-linked automatic lightingBegemann, G. et al. (1997). Daylight, artificial light and

  3. Discussion of an Optimization Scheme for the Ground Source Heat Pump System of HVAC

    E-Print Network [OSTI]

    Mu, W.; Wang, S.; Pan, S.; Shi, Y.

    2006-01-01T23:59:59.000Z

    With the implementation of the global sustainable development strategy, people pay more attention to renewable energy resources such as ground source heat pumps. The technology of ground source heat pump is widely applied to heat and cold...

  4. HYBRID GROUND SOURCE HEAT PUMP SYSTEM SIMULATION USING VISUAL MODELING TOOL FOR HVACSIM+

    E-Print Network [OSTI]

    HYBRID GROUND SOURCE HEAT PUMP SYSTEM SIMULATION USING VISUAL MODELING TOOL FOR HVACSIM+ M.H. Khan, 74078, USA ABSTRACT This paper presents a simulation of a hybrid ground source heat pump system, performed using a new graphical user interface for HVACSIM+. Hybrid ground source heat pump systems

  5. Efficiency, Economic and Environmental Assessment of Ground-Source Heat Pumps in

    E-Print Network [OSTI]

    Blumsack, Seth

    the potential for significant energy savings [1]. The performance of ground-source heat pumps for residential1 Efficiency, Economic and Environmental Assessment of Ground-Source Heat Pumps in Central, the efficiency gain for the ground-source heat pump compared to electricity is 43% for cooling and 81

  6. DAYLIGHTING METRICS FOR RESIDENTIAL BUILDINGS

    E-Print Network [OSTI]

    unknown authors

    It is now widely accepted that the standard method for daylighting evaluation- the daylight factor- is due for replacement with metrics founded on absolute values for luminous quantities predicted over the course of a full year using sun and sky conditions derived from standardised climate files. The move to more realistic measures of daylighting introduces significant levels of additional complexity in both the simulation of the luminous quantities and the reduction of the simulation data to readily intelligible metrics. The simulation component, at least for buildings with standard glazing materials, is reasonably well understood. There is no consensus however on the composition of the metrics, and their formulation is an ongoing area of active research. Additionally, non-domestic and residential buildings present very different evaluation scenarios and it is not yet clear if a single metric would be applicable to both. This study uses a domestic dwelling as the setting to investigate and explore the applicability of daylighting metrics for residential buildings. In addition to daylighting provision for task and disclosing the potential for reducing electric lighting usage, we also investigate the formulation of metrics for non-visual effects such as entrainment of the circadian system.

  7. 4.430 Daylighting, Fall 2006

    E-Print Network [OSTI]

    Andersen, Marilyne

    This class provides the tools necessary for an efficient integration of daylighting issues in the overall design of a building. The fundamentals of daylighting and electric lighting are introduced and their relevance to ...

  8. CALIFORNIA ENERGY Summary Of Daylighting In Schools

    E-Print Network [OSTI]

    CALIFORNIA ENERGY COMMISSION Summary Of Daylighting In Schools: Reanalysis Report ReanalysisConocha of Federated Departments, Jim Van Dame of My-Lite Daylighting Systems and Products, Doug Gehring of Celotex

  9. Fall Back Daylight Savings time is November

    E-Print Network [OSTI]

    Linsley, Braddock K.

    Fall Back 颅 Daylight Savings time is November 2nd.The Energy Policy Act of 2005 changed both the starting and ending dates. Beginning in 2007, daylight time starts on the second Sunday in March and ends

  10. Daylighting Application and Effectiveness in Industrial Facilities

    E-Print Network [OSTI]

    McCowan, B.; Birleanu, D.

    2005-01-01T23:59:59.000Z

    artificial lighting became available, most older industrial buildings had their daylighting features boarded over. With modern glazing systems and sophisticated designs that minimize glare issues, daylighting for industrial buildings is making a strong...

  11. Development of a Residential Ground-Source Integrated Heat Pump

    SciTech Connect (OSTI)

    Rice, C Keith [ORNL] [ORNL; Baxter, Van D [ORNL] [ORNL; Hern, Shawn [ClimateMaster, Inc.] [ClimateMaster, Inc.; McDowell, Tim [Thermal Energy System Specialists, LLC] [Thermal Energy System Specialists, LLC; Munk, Jeffrey D [ORNL] [ORNL; Shen, Bo [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    A residential-size ground-source integrated heat pump (GSIHP) system has been developed and is currently being field tested. The system is a nominal 2-ton (7 kW) cooling capacity, variable-speed unit, which is multi-functional, e.g. space cooling, space heating, dedicated water heating, and simultaneous space cooling and water heating. High-efficiency brushless permanent-magnet (BPM) motors are used for the compressor, indoor blower, and pumps to obtain the highest component performance and system control flexibility. Laboratory test data were used to calibrate a vapor-compression simulation model (HPDM) for each of the four primary modes of operation. The model was used to optimize the internal control options and to simulate the selected internal control strategies, such as controlling to a constant air supply temperature in the space heating mode and a fixed water temperature rise in water heating modes. Equipment performance maps were generated for each operation mode as functions of all independent variables for use in TRNSYS annual energy simulations. These were performed for the GSIHP installed in a well-insulated 2600 ft2(242 m2) house and connected to a vertical ground loop heat exchanger(GLHE). We selected a 13 SEER (3.8 CSPF )/7.7 HSPF (2.3 HSPF, W/W) ASHP unit with 0.90 Energy Factor (EF) resistance water heater as the baseline for energy savings comparisons. The annual energy simulations were conducted over five US climate zones. In addition, appropriate ground loop sizes were determined for each location to meet 10-year minimum and maximum design entering water temperatures (EWTs) to the equipment. The prototype GSIHP system was predicted to use 52 to 59% less energy than the baseline system while meeting total annual space conditioning and water heating loads.

  12. Daylight metrics and energy savings J. Mardaljevic

    E-Print Network [OSTI]

    LBNL-4585E Daylight metrics and energy savings Authors: J. Mardaljevic Institute of Energy 2009; 0: 1颅23 ! Daylight metrics and energy savings J. Mardaljevic a , L. Heschong b , E.S. Lee c comfort performance. Current metrics do not account for the temporal and spatial aspects of daylight, nor

  13. I Color recognition models of daylight illumi-

    E-Print Network [OSTI]

    Draper, Bruce A.

    I Color recognition models of daylight illumi- nation and hybrid reflectance, and predicts of the color of ob- jects with respect to existing models of daylight [12] and surface reflectance [17, 14, 211 a surface reflectance model for hybrid surfaces and a context-based model of daylight illumination

  14. A SIMPLIFIED PROCEDURE FOR CALCULATING THE EFFECTS OF DAYLIGHT FROM CLEAR SKIES

    E-Print Network [OSTI]

    Bryan, Harvey J.

    2012-01-01T23:59:59.000Z

    J. , "The Calculation of Daylight Factor for Clear Skyand Predetermination of Daylight Illumination," ILLUMINATINGA MEASURING DIAGRAM FOR DAYLIGHT ILLUMINATION, Batsford,

  15. Does Extending Daylight Saving Time Save Energy? Evidence from an Australian Experiment

    E-Print Network [OSTI]

    KELLOGG, RYAN M; Wolff, Hendrik

    2007-01-01T23:59:59.000Z

    Tellier, F. (2005): Daylight Saving Time and EnergyCEC, 2001: Effects of Daylight Saving Time on California2004): The effects of daylight and daylight saving time on

  16. Optimal Design for a Hybrid Ground-Source Heat Pump

    E-Print Network [OSTI]

    Yu, Z.; Yuan, X.; Wang, B.

    2006-01-01T23:59:59.000Z

    extraction from the ground. The paper presented has shown that the heat rejection of the GLHEs and the system energy consumption are approached to discuss the ground heat balance with different design procedures and control strategies though the system...

  17. Investigating Daylight Quality In Malaysian Government Office Buildings Through Daylight Factor

    E-Print Network [OSTI]

    Surface Luminance; Mohd Zin K; Mohd Sabere Sulaiman; Yong Razidah Rashid; Dilshan Remaz Ossen; Aminatuzuhariah M; Lim Yaik Wah; Mansour Nikpour

    Abstract桰n recent years, there has been an increasing interest in using daylight to save energy in buildings. In tropical regions, daylighting is always an energy saver. On the other hand, daylight provides visual comfort. According to standards, it shows that many criteria should be taken into consideration in order to have daylight utilization and visual comfort. The current standard in Malaysia, MS 1525 does not provide sufficient guideline. Hence, more research is needed on daylight performance. If architects do not consider daylight design, it not only causes inconvenience in working spaces but also causes more energy consumption as well as environmental pollution. This research had surveyed daylight performance in 5 selected office buildings from different area of Malaysian through experimental method. Several parameters of daylight quality such as daylight factor, surface luminance and surface luminance ratio were measured in different rooms in each building. The result of this research demonstrated that most of the buildings were not designed for daylight utilization. Therefore, it is very important that architects follow the daylight design recommendation to reduce consumption of electric power for artificial lighting while the sufficient quality of daylight is available. KeywordsDaylight factor, Field measurement, Daylighting quality, Tropical

  18. Introduction Ground source heat pump (GSHP) systems are used

    E-Print Network [OSTI]

    to drilling of bore- holes for vertical ground heat exchangers (GHX), or excavation for horizontal GHX heating and cooling loads and their distribution over the year, as well as ground thermal properties, undisturbed ground temperature, and GHX design, as well as other factors. For low energy buildings the greatly

  19. Finite Volume Based Computer Program for Ground Source Heat Pump Systems

    Broader source: Energy.gov [DOE]

    Project objective: Create a new modeling 峝ecision? tool that will enable ground source heat pump (GSHP) designers and customers to make better design and purchasing decisions.

  20. BY SHAWN XU, Ph.D. Ground Source Heat Pumps Serve

    E-Print Network [OSTI]

    BY SHAWN XU, Ph.D. 1 Ground Source Heat Pumps Serve A Large; BY SHAWN XU, Ph.D. 7 Loop Func>ons Seasonal storage (Single output) Hourly buffering (Dual output) #12; BY SHAWN XU, Ph.D. 8 Ground Loops Ground

  1. Ground Source Integrated Heat Pump (GS-IHP) Development

    SciTech Connect (OSTI)

    Baxter, V. D. [ORNL; Rice, K. [ORNL; Murphy, R. [ORNL; Munk, J. [ORNL; Ally, Moonis [ORNL; Shen, Bo [ORNL; Craddick, William [ORNL; Hearn, Shawn A. [ClimateMaster, Inc.

    2013-05-24T23:59:59.000Z

    Between October 2008 and May 2013 ORNL and ClimateMaster, Inc. (CM) engaged in a Cooperative Research and Development Agreement (CRADA) to develop a groundsource integrated heat pump (GS-IHP) system for the US residential market. A initial prototype was designed and fabricated, lab-tested, and modeled in TRNSYS (SOLAR Energy Laboratory, et al, 2010) to predict annual performance relative to 1) a baseline suite of equipment meeting minimum efficiency standards in effect in 2006 (combination of air-source heat pump (ASHP) and resistance water heater) and 2) a state-of-the-art (SOA) two-capacity ground-source heat pump with desuperheater water heater (WH) option (GSHPwDS). Predicted total annual energy savings, while providing space conditioning and water heating for a 2600 ft{sup 2} (242 m{sup 2}) house at 5 U.S. locations, ranged from 52 to 59%, averaging 55%, relative to the minimum efficiency suite. Predicted energy use for water heating was reduced 68 to 78% relative to resistance WH. Predicted total annual savings for the GSHPwDS relative to the same baseline averaged 22.6% with water heating energy use reduced by 10 to 30% from desuperheater contributions. The 1st generation (or alpha) prototype design for the GS-IHP was finalized in 2010 and field test samples were fabricated for testing by CM and by ORNL. Two of the alpha units were installed in 3700 ft{sup 2} (345 m{sup 2}) houses at the ZEBRAlliance site in Oak Ridge and field tested during 2011. Based on the steady-state performance demonstrated by the GS-IHPs it was projected that it would achieve >52% energy savings relative to the minimum efficiency suite at this specific site. A number of operational issues with the alpha units were identified indicating design changes needed to the system before market introduction could be accomplished. These were communicated to CM throughout the field test period. Based on the alpha unit test results and the diagnostic information coming from the field test experience, CM developed a 2nd generation (or beta) prototype in 2012. Field test verification units were fabricated and installed at the ZEBRAlliance site in Oak Ridge in May 2012 and at several sites near CM headquarters in Oklahoma. Field testing of the units continued through February 2013. Annual performance analyses of the beta unit (prototype 2) with vertical well ground heat exchangers (GHX) in 5 U.S. locations predict annual energy savings of 57% to 61%, averaging 59% relative to the minimum efficiency suite and 38% to 56%, averaging 46% relative to the SOA GSHPwDS. Based on the steady-state performance demonstrated by the test units it was projected that the 2nd generation units would achieve ~58% energy savings relative to the minimum efficiency suite at the Zebra Alliance site with horizontal GHX. A new product based on the beta unit design was announced by CM in 2012 the Trilogy 40 Q-mode (http://cmdealernet.com/trilogy_40.html). The unit was formally introduced in a March 2012 press release (see Appendix A) and was available for order beginning in December 2012.

  2. daylight 12/17/2007 1 Tracking the change in the amount of daylight

    E-Print Network [OSTI]

    Taylor, Peter

    daylight 12/17/2007 1 Tracking the change in the amount of daylight Ever notice that at some times successive days? (c) (Calculus) The daylight graph has been drawn with sine-curve. Find its equation. (d) Use get the following diagram. #12;daylight 12/17/2007 2 0 2 4 6 8 10 12 14 16 18 20 0 20 40 60 80 100 120

  3. Effect of daylighting on energy consumption and daylight quality in an existing elementary school

    E-Print Network [OSTI]

    Atre, Umesh Vinayak

    2005-08-29T23:59:59.000Z

    EFFECT OF DAYLIGHTING ON ENERGY CONSUMPTION AND DAYLIGHT QUALITY IN AN EXISTING ELEMENTARY SCHOOL A Thesis by UMESH VINAYAK ATRE Submitted to the Office of Graduate Studies of Texas A&M University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE May 2005 Major Subject: Architecture EFFECT OF DAYLIGHTING ON ENERGY CONSUMPTION AND DAYLIGHT QUALITY IN AN EXISTING ELEMENTARY SCHOOL A...

  4. PERFORMANCE ANALYSIS OF A RESIDENTIAL GROUND SOURCE HEAT PUMP SYSTEM WITH ANTIFREEZE SOLUTION

    E-Print Network [OSTI]

    PERFORMANCE ANALYSIS OF A RESIDENTIAL GROUND SOURCE HEAT PUMP SYSTEM WITH ANTIFREEZE SOLUTION M in a ground source heat pump system falls near or below 0o C, an antifreeze mixture must be used to prevent freezing in the heat pump. The antifreeze mixture type and concentration has a number of implications

  5. 192 ASHRAE Transactions: Research Ground-source heat pumps for cooling-dominated

    E-Print Network [OSTI]

    Ghajar, Afshin J.

    192 ASHRAE Transactions: Research ABSTRACT Ground-source heat pumps for cooling- tion of the heat pump performance is avoided by offsetting the annual load imbalance in the borefield operating and control strategies in a hybrid ground-source heat pump application using an hourly system

  6. Daylighting controls; Orphan of HVAC design

    SciTech Connect (OSTI)

    Rundquist, R.A. (R.A. Rundquist Associates Inc., Northampton, MA (US))

    1991-11-01T23:59:59.000Z

    This paper reports that in the array of strategies employed for energy-efficient design and retrofitting in commercial buildings, the use of daylighting controls is often overlooked or omitted. Thus, daylighting controls are a worthy but neglected orphan of the design process, stranded between the lighting designer, architect and engineer. Most daylighting analysis ignores HVAC effects, despite obvious interactions between windows, heat-from-lights, and thermal loads.

  7. Energy 101: Daylighting | Department of Energy

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

    Highly efficient, strategically placed windows maximize the use of natural daylight in a building, lowering the need for artificial lighting without causing heating or...

  8. Do Daylight-Saving Time Adjustments Really Impact Stock Returns?

    E-Print Network [OSTI]

    Steigerwald, Douglas G; Conte, Marc

    2007-01-01T23:59:59.000Z

    I. Taylor, 1935, World Daylight Saving Time, Chicago: Cur-Sleep at the Market: The Daylight Saving Anomaly, AmericanSleep at the Market: The Daylight Saving Anomaly: Reply,

  9. Simulating the Daylight Performance of Complex Fenestration Systems Using

    E-Print Network [OSTI]

    LBNL-4414E Simulating the Daylight Performance of Complex Fenestration Systems Using Bidirectional, January 21, 2011. 1 Simulating the Daylight Performance of Complex Fenestration Systems Using (BSDFs) to model the daylighting performance of complex fenestration systems (CFS), enabling greater

  10. Integrated Daylight Harvesting and Occupancy Detection Using Digital Imaging

    E-Print Network [OSTI]

    Salvaggio, Carl

    Integrated Daylight Harvesting and Occupancy Detection Using Digital Imaging Abhijit Sarkar dynamic range CMOS video camera to integrate daylight harvesting and occupancy sensing functionalities by these sensors. The prototype involves three algorithms, daylight estimation, occupancy detection and lighting

  11. International Symposium on Daylighting Buildings (IEA SHC TASK 31) Integrating Automated Shading and Smart Glazings with Daylight

    E-Print Network [OSTI]

    International Symposium on Daylighting Buildings (IEA SHC TASK 31) Integrating Automated Shading and Smart Glazings with Daylight Controls Stephen Selkowitz Eleanor Lee Lawrence Berkeley National Laboratory Keywords: daylighting, controls, smart glazing, shading, field testing, IEA31 1. INTRODUCTION Most

  12. Study of the design Method of an Efficient Ground Source Heat Pump Thermal Source System in a Cold Area

    E-Print Network [OSTI]

    Shu, H.; Duanmu, L.; Hua, R.; Zou, Y.; Du, G.

    2006-01-01T23:59:59.000Z

    The ground source heat pump (GSHP) system-an energy efficiency and environment friendly system-is becoming popular in many parts of China. However, an imbalance usually exists between the annual heat extracted from and rejected to the ground due...

  13. June 1998Program Description Windows and Daylighting Group

    E-Print Network [OSTI]

    June 1998Program Description THERM 2.0 Windows and Daylighting Group Building Technologies, and Dariush Arasteh Windows and Daylighting Group Building Technologies Department Environmental Energy

  14. A Practical Analytic Model for Daylight Category: research

    E-Print Network [OSTI]

    Shirley, Peter

    A Practical Analytic Model for Daylight Category: research Abstract Sunlight and skylight that approximates full spectrum daylight for various atmospheric con颅 ditions. These conditions are parameterized

  15. A Practical Analytic Model for Daylight Category: research

    E-Print Network [OSTI]

    Shirley, Peter

    A Practical Analytic Model for Daylight Category: research Abstract Sunlight and skylight that approximates full spectrum daylight for various atmospheric con- ditions. These conditions are parameterized

  16. Singapore's Zero-Energy Building's daylight monitoring system

    E-Print Network [OSTI]

    Grobe, Lars

    2010-01-01T23:59:59.000Z

    Singapore抯 Zero-Energy Building抯 daylight monitoringSingapore抯 Zero-Energy Building's daylight monitoringchambers in BCAA's Zero Energy Building in Singapore. These

  17. Daylight metrics and energy savings

    SciTech Connect (OSTI)

    Mardaljevic, John; Heschong, Lisa; Lee, Eleanor

    2009-12-31T23:59:59.000Z

    The drive towards sustainable, low-energy buildings has increased the need for simple, yet accurate methods to evaluate whether a daylit building meets minimum standards for energy and human comfort performance. Current metrics do not account for the temporal and spatial aspects of daylight, nor of occupants comfort or interventions. This paper reviews the historical basis of current compliance methods for achieving daylit buildings, proposes a technical basis for development of better metrics, and provides two case study examples to stimulate dialogue on how metrics can be applied in a practical, real-world context.

  18. Assessing the Feasibility of Creek Daylighting in San Francisco, Part I: A Synthesis of Lessons Learned from Existing Urban Daylighting Projects

    E-Print Network [OSTI]

    Smith, Brooke Ray

    2007-01-01T23:59:59.000Z

    and Leonardson 2004). Why Daylight? In San Francisco, creekof San Francisco to daylight historical urban creeks withincity governments to daylight urban creeks, with successful

  19. Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2011-01-01T23:59:59.000Z

    quantitative performance indicators of daylight sufficiency?set of daylighting performance indicators for examination inassumptions of performance indicators under real work

  20. Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    quantitative performance indicators of daylight sufficiency?set of daylighting performance indicators for examination inassumptions of performance indicators under real work

  1. Hiding patterns with daylight fluorescent inks

    E-Print Network [OSTI]

    Romain Rossier; Roger D. Hersch; School Of Computer; Communication Sciences; Ecole Polytechnique; F閐閞ale Lausanne

    We propose a method for hiding patterns within printed images by making use of classical and of two daylight fluorescent magenta and yellow inks. Under the D65 illuminant we establish in the CIELAB space the gamut of a classical cmyk printer and the gamut of the same printer using a combination of classical inks with daylight fluorescent inks. These gamuts show that a significant part of the classical ink gamut can be reproduced by combining classical inks with daylight fluorescent inks. By printing parts of images with a combination of classical and daylight fluorescent inks instead of using classical inks only, we can hide security patterns within printed images. Under normal daylight, we do not see any difference between the parts printed with classical inks only and the parts printed with daylight fluorescent inks and classical inks. By changing the illumination, e.g. by viewing the printed image under a tungsten lamp or under a UV lamp, the daylight fluorescent inks change their colors and reveal the security pattern formed by combinations of classical inks and of daylight fluorescent inks.

  2. Federal Technology Alert: Ground-Source Heat Pumps Applied to Federal Facilities--Second Edition

    SciTech Connect (OSTI)

    Hadley, Donald L.

    2001-03-01T23:59:59.000Z

    This Federal Technology Alert, which was sponsored by the U.S. Department of Energy's Office of Federal Energy Management Programs, provides the detailed information and procedures that a Federal energy manager needs to evaluate most ground-source heat pump applications. This report updates an earlier report on ground-source heat pumps that was published in September 1995. In the current report, general benefits of this technology to the Federal sector are described, as are ground-source heat pump operation, system types, design variations, energy savings, and other benefits. In addition, information on current manufacturers, technology users, and references for further reading are provided.

  3. EPA (Environmental Protection Agency) activities related to sources of ground-water contamination

    SciTech Connect (OSTI)

    Black-Coleman, W.

    1987-02-01T23:59:59.000Z

    The report contains a listing of EPA programs and activities, as of October 1986, that address 33 sources of potential ground-water contamination. The information on each activity is presented in a matrix format that is organized by type of contamination source. The following information is presented for each program and activity listed: title, lead office, contact person, type of activity (study, regulation, guidance, strategy, etc.) status, and a summary of the activity. The 33 sources of ground-water contamination are discussed in the 1984 EPA Office of Technology report: Protecting the Nations Ground Water from Contamination.

  4. Short communication Optimization of hybrid ground coupled and air source heat pump systems

    E-Print Network [OSTI]

    Fern醤dez de C髍doba, Pedro

    Short communication Optimization of hybrid ground coupled and air source heat pump systems 2008 Accepted 14 January 2010 Available online 28 January 2010 Keywords: Ground coupled heat pump Air to water heat pump Thermal storage device Hybrid HVAC system Energy efficiency Numerical simulation a b

  5. Ball State Completes Largest U.S. Ground-Source Geothermal System...

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

    ground-source geothermal system, the nation's largest geothermal heating and cooling system, DOE announced on March 20. DOE played a part in the project by providing a 5 million...

  6. Ground and Water Source Heat Pump Performance and Design for Southern Climates

    E-Print Network [OSTI]

    Kavanaugh, S.

    1988-01-01T23:59:59.000Z

    Ground and water source heat pump systems have very attractive performance characteristics when properly designed and installed. These systems typically consist of a water-to-air or water-to-water heat pump linked to a closed loop vertical...

  7. Ground and Water Source Heat Pump Performance and Design for Southern Climates

    E-Print Network [OSTI]

    Kavanaugh, S.

    1988-01-01T23:59:59.000Z

    Ground and water source heat pump systems have very attractive performance characteristics when properly designed and installed. These systems typically consist of a water-to-air or water-to-water heat pump linked to a closed loop vertical...

  8. Ground source heat storage and thermo-physical response of soft clay

    E-Print Network [OSTI]

    Saxe, Shoshanna Dawn

    2009-01-01T23:59:59.000Z

    Ground source heat storage can condition buildings with reduced consumption of fossil fuels, an important issue in modem building design. However, seasonal heat storage can cause soil temperature fluctuations and possibly ...

  9. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

    E-Print Network [OSTI]

    Hong, Tainzhen

    2010-01-01T23:59:59.000Z

    tool for geothermal water loop heat pump systems, 9thInternational IEA Heat Pump Conference, Z黵ich, Switzerland,Performance of ground source heat pump system in a near-zero

  10. ORNL/TM-2008/232 Geothermal (Ground-Source) Heat Pumps

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    ORNL/TM-2008/232 Geothermal (Ground-Source) Heat Pumps: Market Status, Barriers to Adoption Division Sponsored by EERE Geothermal Technologies Program U.S. Department of Energy #12;Page iii DOCUMENT

  11. ORNL/TM-2008/232 Geothermal (Ground-Source) Heat Pumps

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    ORNL/TM-2008/232 Geothermal (Ground-Source) Heat Pumps: Market Status, Barriers to Adoption Division Sponsored by EERE Geothermal Technologies Program U.S. Department of Energy #12; Page iii

  12. VOLUME 11, NUMBER 2 HVAC&R RESEARCH APRIL 2005 Ground-Source Heat Pump System Research--

    E-Print Network [OSTI]

    VOLUME 11, NUMBER 2 HVAC&R RESEARCH APRIL 2005 165 EDITORIAL Ground-Source Heat Pump System Research-- Past, Present, and Future J.D. Spitler, PhD, PE Fellow ASHRAE Ground-source heat pump (GSHP-source heat pumps installed worldwide. These systems may be closed-loop ("ground-coupled") or open

  13. SBi 2006:08 Assessment of daylight quality

    E-Print Network [OSTI]

    SBi 2006:08 Assessment of daylight quality in simple rooms Impact of three window configurations on daylight conditions, Phase 2 #12;#12;SBi 2006:08 Danish Building Research Institute 2006 Assessment of daylight quality in simple rooms Impact of three window configurations on daylight conditions, Phase 2

  14. FREE-SPACE QUANTUM CRYPTOGRAPHY IN DAYLIGHT

    SciTech Connect (OSTI)

    Hughes, R.J.; Buttler, W.T. [and others

    2000-01-01T23:59:59.000Z

    Quantum cryptography is an emerging technology in which two parties may simultaneously generate shared, secret cryptographic key material using the transmission of quantum states of light. The security of these transmissions is based on the inviolability of the laws of quantum mechanics and information-theoretically secure post-processing methods. An adversary can neither successfully tap the quantum transmissions, nor evade detection, owing to Heisenberg's uncertainty principle. In this paper we describe the theory of quantum cryptography, and the most recent results from our experimental free-space system with which we have demonstrated for the first time the feasibility of quantum key generation over a point-to-point outdoor atmospheric path in daylight. We achieved a transmission distance of 0.5 km, which was limited only by the length of the test range. Our results provide strong evidence that cryptographic key material could be generated on demand between a ground station and a satellite (or between two satellites), allowing a satellite to be securely re-keyed on orbit. We present a feasibility analysis of surface-to-satellite quantum key generation.

  15. Ground Source Heat Pump Demonstration Projects | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGrid Integration and the Carrying Capacity1ChallengesGround

  16. Monitored Energy Performance of Electrochromic Windows Controlled for Daylight and Visual Comfort

    E-Print Network [OSTI]

    Lee, Eleanor S.; DiBartolomeo, Dennis L.; Klems, Joseph; Yazdanian, Mehry; Selkowitz, Stephen E.

    2005-01-01T23:59:59.000Z

    Windows Controlled for Daylight and Visual Comfort Eleanorof means to bring in daylight while minimizing window glare.was controlled to admit daylight while the lower zone was

  17. Evaluation of Climate-Based Daylight Performance in Tropical Office Buildings- A Case Study

    E-Print Network [OSTI]

    Szu-Cheng, CHIEN; King Jet, TSENG

    2013-01-01T23:59:59.000Z

    and Z. Rogers, Dynamic Daylight Performance Metrics forof interior design on the daylight availability in open plan2002. [14] Z. Rogers, Daylight metric development using

  18. SIMULATION-ASSISTED DAYLIGHT PERFORMANCE ANALYSISIN A HIGH-RISE OFFICE BUILDING IN SINGAPORE

    E-Print Network [OSTI]

    CHIEN, Szu Cheng; TSENG, King Jet

    2013-01-01T23:59:59.000Z

    Flodberg, K. (2013). Daylight utilisation in perimeterJ. , (2005a). 揢seful Daylight Illuminance: A NewParadigm to Access Daylight in Buildings. Lighting

  19. Simulating the Daylight Performance of Complex Fenestration Systems Using Bidirectional Scattering Distribution Functions within Radiance

    E-Print Network [OSTI]

    Ward, Gregory

    2011-01-01T23:59:59.000Z

    761-81. Tregenza PR. 1983. Daylight coefficients. Lighting773. Reinhart CF. 2001. Daylight availability and manualA visualization of an incident daylight matrix (cumulative

  20. Does Daylight Saving Time Save Energy? Evidence from a Natural Experiment in Indiana

    E-Print Network [OSTI]

    Kotchen, Matthew J; Grant, Laura E.

    2008-01-01T23:59:59.000Z

    The Energy Impact of Daylight Saving Time Implementation insleep at the market: The daylight saving anomaly. Americansleep at the market: The daylight saving anomaly: Reply.

  1. A PROCEDURE FOR CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH A PROGRAMMABLE HAND CALCULATOR

    E-Print Network [OSTI]

    Bryan, H.J.

    2010-01-01T23:59:59.000Z

    FOR CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH ACommittee E-3.2, "Daylight: International RecommendationsCalcula- tion of Natural Daylight," CIE PUBLICATION No. 16,

  2. Performance of Integrated Systems of Automated Roller Shade Systems and Daylight Responsive Dimming Systems

    E-Print Network [OSTI]

    Park, Byoung-Chul

    2011-01-01T23:59:59.000Z

    Roller Shade Systems and Daylight Responsive Dimming SystemsRoller Shade Systems and Daylight Responsive Dimming SystemsBerkeley, CA 94720 Abstract Daylight responsive dimming

  3. Performance-based assessment of daylight on tropical buildings- a case Study

    E-Print Network [OSTI]

    Szu Cheng, CHIEN

    2013-01-01T23:59:59.000Z

    81% 81% 95% 96% 74% 68% Daylight autonomy max (DAmax) >5%32% 28% 11% 9% 11% 6% Useful daylight illuminance (UDI) Daylight Performance Metrics for

  4. Mixed Waste Management Facility (MWMF) Old Burial Ground (OBG) source control technology and inventory study

    SciTech Connect (OSTI)

    Flach, G.P.; Rehder, T.E.; Kanzleiter, J.P.

    1996-10-02T23:59:59.000Z

    This report has been developed to support information needs for wastes buried in the Burial Ground Complex. Information discussed is presented in a total of four individual attachments. The general focus of this report is to collect information on estimated source inventories, leaching studies, source control technologies, and to provide information on modeling parameters and associated data deficiencies.

  5. 4.492 Daylighting, Fall 2004

    E-Print Network [OSTI]

    Andersen, Marilyne

    The course focuses on the use and optimization of daylight in buildings and on its complementarity to artificial (electric) lighting, to aim at reducing the building's environmental impact while improving the visual comfort ...

  6. Daylighting Prediction Software: Comparative Analysis and Application

    E-Print Network [OSTI]

    Estes, J. M. Jr.; Schreppler, S.; Newsom, T.

    2004-01-01T23:59:59.000Z

    in selecting a software program are presented. 揜adiance, a reverse ray tracing method software package, was chosen for use in the simulations. An existing school was modeled with the Radiance software and predictions of daylighting contributions were compared...

  7. Daylighting Application and Effectiveness in Industrial Facilities

    E-Print Network [OSTI]

    McCowan, B.; Birleanu, D.

    2005-01-01T23:59:59.000Z

    during the industrial revolution, architects utilized various daylighting strategies such as window walls, skylighting, monitors, etc. However, glazing technologies were primitive compared with our modern choices, When more efficient and effective...

  8. Utilizing Daylighting Controls in a Manufacturing Facility

    E-Print Network [OSTI]

    Shrestha, S. S.; Maxwell, G. M.

    Utilizing Daylighting Controls in a Manufacturing Facility Som S. Shrestha Dr. Gregory M. Maxwell PhD Candidate Associate Professor som@iastate.edu gmaxwell@iastate.edu Iowa State University Ames, IA ABSTRACT Opportunities exist... to reduce artificial lighting in manufacturing facilities which have skylights and/or fenestration that provide sufficient quantities of daylight to the work space. Using photometric sensors to measure the illuminance in the space, artificial lights can...

  9. Focus group discussions of daylighting practices

    SciTech Connect (OSTI)

    Roberson, B.F.; Harkreader, S.A.

    1988-11-01T23:59:59.000Z

    This research was sponsored by the US Department of Energy (DOE) Office of Buildings and Community systems and conducted by Pacific Northwest Laboratory (PNL) as part of an ongoing effort to enhance the commercial use of federally developed technologies. One such technology is the use of daylighting practices in the design of nonresidential buildings. This document is a report of the findings from meetings of focus groups conducted to gain insight into building designers' perceptions and attitudes about daylighting systems.

  10. Study of the design Method of an Efficient Ground Source Heat Pump Thermal Source System in a Cold Area

    E-Print Network [OSTI]

    Shu, H.; Duanmu, L.; Hua, R.; Zou, Y.; Du, G.

    2006-01-01T23:59:59.000Z

    Energiae Solaris Sinica, 2005, 6(2):162-165.(In Chinese) [4] Sun Jianping, Wang Jinggang, etc. Operating performance analysis of the ground source heat pump [J]. Journal of North China electric Power University, 2004,31(5):52-55.(In Chinese) [5] Wang...

  11. Performance Evaluation of a ground source heat pump system based on ANN and ANFIS models

    E-Print Network [OSTI]

    Sun, W.; Hu, P.; Lei, F.; Zhu, N.; Zhang,J.

    2014-01-01T23:59:59.000Z

    Performance evaluation of a ground source heat pump system based on ANN and ANFIS models Weijuan SUN a, Pingfang HUa,*, Fei Leia, Na Zhua, Jiangning Zhanga aHuazhong University of Science and Technology, Wuhan 430074, P. R. China Abstract...: The aim of this work is to calculate the heat pump coefficient of performance (COP) and the system COP of a ground source heat pump (GSHP) system based on an artificial neural network (ANN) model and (adaptive neuro-fuzzy inference system (ANFIS) model...

  12. Ground Source Heat Pump Sub-Slab Heat Exchange Loop Performance in a Cold Climate

    SciTech Connect (OSTI)

    Mittereder, N.; Poerschke, A.

    2013-11-01T23:59:59.000Z

    This report presents a cold-climate project that examines an alternative approach to ground source heat pump (GSHP) ground loop design. The innovative ground loop design is an attempt to reduce the installed cost of the ground loop heat exchange portion of the system by containing the entire ground loop within the excavated location beneath the basement slab. Prior to the installation and operation of the sub-slab heat exchanger, energy modeling using TRNSYS software and concurrent design efforts were performed to determine the size and orientation of the system. One key parameter in the design is the installation of the GSHP in a low-load home, which considerably reduces the needed capacity of the ground loop heat exchanger. This report analyzes data from two cooling seasons and one heating season. Upon completion of the monitoring phase, measurements revealed that the initial TRNSYS simulated horizontal sub-slab ground loop heat exchanger fluid temperatures and heat transfer rates differed from the measured values. To determine the cause of this discrepancy, an updated model was developed utilizing a new TRNSYS subroutine for simulating sub-slab heat exchangers. Measurements of fluid temperature, soil temperature, and heat transfer were used to validate the updated model.

  13. A Novel Integrated Frozen Soil Thermal Energy Storage and Ground-Source Heat Pump System

    E-Print Network [OSTI]

    Jiang, Y.; Yao, Y.; Rong, L.; Ma, Z.

    2006-01-01T23:59:59.000Z

    In this paper, a novel integrated frozen soil thermal energy storage and ground-source heat pump (IFSTS&GSHP) system in which the GHE can act as both cold thermal energy storage device and heat exchanger for GSHP is first presented. The IFSTS...

  14. A Novel Integrated Frozen Soil Thermal Energy Storage and Ground-Source Heat Pump System

    E-Print Network [OSTI]

    Jiang, Y.; Yao, Y.; Rong, L.; Ma, Z.

    2006-01-01T23:59:59.000Z

    In this paper, a novel integrated frozen soil thermal energy storage and ground-source heat pump (IFSTS&GSHP) system in which the GHE can act as both cold thermal energy storage device and heat exchanger for GSHP is first presented. The IFSTS...

  15. Payback Analysis for Ground Source Heat Pump Retrofits Using eQuest Modeling Software

    E-Print Network [OSTI]

    Wahlers, Drake

    2011-12-16T23:59:59.000Z

    There has been much research and analysis done on the performance and potential energy savings related to installing a ground source heat pump (GSHP) system. Much of this research has been dedicated to the new construction industry, and focused on a...

  16. Feasibility Study of Using Ground Source Heat Pumps in Two Buildings

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    , it was assumed that natural gas-fired water heaters would replace the steam converters that presently provide hot water for the buildings. It would also be possible to use dedicated water-to-water ground source heat pumps to provide hot water. #12; 2 II. BACKGROUND AND BASE CASE A. Background on McCormick Center

  17. Singapore's Zero-Energy Building's daylight monitoring system

    E-Print Network [OSTI]

    Grobe, Lars

    2010-01-01T23:59:59.000Z

    DGP Established performance indicators are illuminanceled to new performance indicators. The Useful Daylightsimulation. The performance indicator used was the Daylight

  18. Building Information Modeling (BIM)-Based Daylighting Simulation and Analysis

    E-Print Network [OSTI]

    Kota, S.; Haberl, J.S.; Clayton, M.; Yan, W.

    2014-01-01T23:59:59.000Z

    will be converted into daylighting models to run on the daylighting simulation engines. Once the architect defines the architectural model in CAD, a simulation expert creates the simulation input file to perform daylighting analysis. Each tool has its own way... the Radiance input file is created, different Radiance utilities are called using MS Windows BATCH scripting for doing a daylighting analysis [15]. In addition to AutoCAD, Radiance also has many utility programs that help in converting different geometry...

  19. Building Information Modeling (BIM)-Based Daylighting Simulation and Analysis

    E-Print Network [OSTI]

    Kota, S.; Haberl, J.S.; Clayton, M.; Yan, W.

    tools Radiance and DAYSIM. Keywords: Building Information Modeling, BIM, Daylighting Simulation, Radiance, DAYSIM 1 Introduction Building performance analyses are important aspects of designing sustainable buildings. One of the performance analyses...) with daylighting analysis tools (Radiance and DAYSIM as sample simulation tools, which are widely used to study the daylighting performance of buildings). 2 Literature review 2.1 Daylighting simulation tools Over the years many analysis tools have been...

  20. Field Test of High Efficiency Residential Buildings with Ground-source and Air-source Heat Pump Systems

    SciTech Connect (OSTI)

    Ally, Moonis Raza [ORNL] [ORNL; Munk, Jeffrey D [ORNL] [ORNL; Baxter, Van D [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    This paper describes the field performance of space conditioning and water heating equipment in four single-family residential structures with advanced thermal envelopes. Each structure features a different, advanced thermal envelope design: structural insulated panel (SIP); optimum value framing (OVF); insulation with embedded phase change materials (PCM) for thermal storage; and exterior insulation finish system (EIFS). Three of the homes feature ground-source heat pumps (GSHPs) for space conditioning and water heating while the fourth has a two-capacity air-source heat pump (ASHP) and a heat pump water heater (HPWH). Two of the GCHP-equipped homes feature horizontal ground heat exchange (GHX) loops that utillize the existing foundation and utility service trenches while the third features a vertical borehole with vertical u-tube GHX. All of the houses were operated under the same simulated occupancy conditions. Operational data on the house HVAC/Water heating (WH) systems are presented and factors influencing overall performance are summarized.

  1. A Spatially Augmented Reality Sketching Interface for Architectural Daylighting Design

    E-Print Network [OSTI]

    Varela, Carlos

    1 A Spatially Augmented Reality Sketching Interface for Architectural Daylighting Design Yu Sheng to architectural daylight modeling that allows designers to explore alternative designs and new technologies are then projected on the real model by four calibrated projectors to help users study the daylighting illumination

  2. Quantifying the Impact of Daylight Saving Clock Changes

    E-Print Network [OSTI]

    Hill, Simon I.

    Quantifying the Impact of Daylight Saving Clock Changes on Energy Consumption Simon I. Hill of Daylight Saving Clock Changes on Energy Consumption Simon I. Hill, Fr茅d茅ric Desobry and Yu-Foong Chong May DST Daylight Saving Time EIA Energy Information Administration GDP Gross Domestic Product GMT

  3. 15 Acoustic Daylight Imaging in the Michael J. Buckingham

    E-Print Network [OSTI]

    Buckingham, Michael

    15 Acoustic Daylight Imaging in the Ocean Michael J. Buckingham Scripps Institution of Oceanography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418 15.4 Acoustic daylight images . . . . . . . . . . . . . . . . . . . . . . . . 420 15.5 Concluding. Sensors and Imaging ISBN 0颅12颅379771颅3/$30.00 #12;416 15 Acoustic Daylight Imaging in the Ocean Acoustic

  4. Daylighting a Green High School Smart Schools Symposium 2013

    E-Print Network [OSTI]

    California at Davis, University of

    Daylighting a Green High School Smart Schools Symposium 2013 #12;AMERICAN CANYON HIGH SCHOOL NAPA CHPS Verified School in CA Daylighting a major focus of sustainable design strategy Began design and orientations First and second story Goals: best daylighting possible flexible lighting system simple and cost

  5. Loss of Daylight Vision in Retinal Degeneration: Are

    E-Print Network [OSTI]

    Tabin, Cliff

    Loss of Daylight Vision in Retinal Degeneration: Are Oxidative Stress and Metabolic Dysregulation, particularly in cones, the type of photoreceptors that mediate daylight and color vision. The evidence, providing our daylight vision, and have many of the same features and vulnerabilities as rod photoreceptors

  6. Combining daylighting, personal controls, and load shedding offers

    E-Print Network [OSTI]

    Combining daylighting, personal controls, and load shedding offers enormous potential for reducing lighting system to respond to available daylight and demand response control 路 Allows building occupants--Consider the improved cost-effectiveness of wireless dimming to promote daylighting controls and load- shedding

  7. Inferring Architectural Designs from Physical Sketches: Application to Daylighting Analysis

    E-Print Network [OSTI]

    Varela, Carlos

    Inferring Architectural Designs from Physical Sketches: Application to Daylighting Analysis Barbara and a closed, 3D triangle mesh representation is constructed. We apply the system to architectural daylighting, daylighting analy- sis, and image processing. ACM Classification Keywords H.5.1 Information Interfaces

  8. The Impact on Energy Consumption of Daylight Saving Clock Changes

    E-Print Network [OSTI]

    Hill, Simon I.

    The Impact on Energy Consumption of Daylight Saving Clock Changes S. I. Hilla, , F. Desobrya , E. W demonstrating po- tential energy savings which could be obtained were Great Britain to maintain Daylight Savings result from an extension of Daylight Saving Time (DST) over the months currently on Greenwich Mean Time

  9. STATE OF CALIFORNIA AUTOMATIC DAYLIGHTING CONTROL ACCEPTANCE DOCUMENT

    E-Print Network [OSTI]

    STATE OF CALIFORNIA AUTOMATIC DAYLIGHTING CONTROL ACCEPTANCE DOCUMENT CEC-LTG-3A (Revised 07/10) CALIFORNIA ENERGY COMMISSION CERTIFICATE OF ACCEPTANCE LTG-3A Automatic Daylighting Control Acceptance fraction of rated light output. #12;STATE OF CALIFORNIA AUTOMATIC DAYLIGHTING CONTROL ACCEPTANCE DOCUMENT

  10. Singapore's Zero-Energy Building's Daylight Monitoring System

    E-Print Network [OSTI]

    LBNL-3708E Singapore's Zero-Energy Building's Daylight Monitoring System Author(s), L. Grobe; S thereof or The Regents of the University of California. #12;Singapore's Zero-Energy Building's daylight, 94720 California, USA 1. Abstract A setup to monitor the daylighting performance of different glazing

  11. COMPUTATIONAL SIMULATIONS FOR PREDICTING VERTICAL DAYLIGHT LEVELS IN ATRIUM BUILDINGS

    E-Print Network [OSTI]

    Jiangtao Du; Steve Sharples

    This paper investigates the impact of well geometry and surface reflectance on vertical daylight levels in atria with square forms under a CIE standard overcast sky. By reviewing some previous investigations and comparing with scale model measurements the vertical daylight factor calculated using Radiance are validated. More simulated vertical daylight factors for a very wide range of atrium geometries and reflectances are given. From the results the attenuation and distribution of the vertical daylight levels on the wall of a square atrium with different reflectances are displayed. Also, the comparisons between simulations and two analytical theories have been performed. Finally some conclusions for supporting daylight design in atria are presented.

  12. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

    SciTech Connect (OSTI)

    Hong, Tainzhen; Liu, Xaiobing

    2009-11-01T23:59:59.000Z

    With the current movement toward net zero energy buildings, many technologies are promoted with emphasis on their superior energy efficiency. The variable refrigerant flow (VRF) and ground source heat pump (GSHP) systems are probably the most competitive technologies among these. However, there are few studies reporting the energy efficiency of VRF systems compared with GSHP systems. In this article, a preliminary comparison of energy efficiency between the air-source VRF and GSHP systems is presented. The computer simulation results show that GSHP system is more energy efficient than the air-source VRF system for conditioning a small office building in two selected US climates. In general, GSHP system is more energy efficient than the air-source VRV system, especially when the building has significant heating loads. For buildings with less heating loads, the GSHP system could still perform better than the air-source VRF system in terms of energy efficiency, but the resulting energy savings may be marginal.

  13. Does Daylight Savings Time Affect Traffic Accidents?

    E-Print Network [OSTI]

    Deen, Sophia 1988-

    2012-04-20T23:59:59.000Z

    This paper studies the effect of changes in accident pattern due to Daylight Savings Time (DST). The extension of the DST in 2007 provides a natural experiment to determine whether the number of traffic accidents is affected by shifts in hours...

  14. A pre-feasibility study to assess the potential of Open Loop Ground Source Heat to heat and cool the proposed Earth Science Systems Building

    E-Print Network [OSTI]

    A pre-feasibility study to assess the potential of Open Loop Ground Source Heat to heat and cool............................................................1 1.2. History of Ground Source Heat Pump Systems................................................3 1.3. Components of Ground Source Heat Pump Systems..........................................3 1.4. Types of Ground

  15. Assessing the Feasibility of Creek Daylighting in San Francisco, Part II: A Preliminary Analysis of Yosemite Creek

    E-Print Network [OSTI]

    Smith, Brooke Ray

    2007-01-01T23:59:59.000Z

    or purchased properties) to daylight the stream? Or is itrestoration (Smith 2007). Why Daylight in San Francisco? Inof San Francisco to daylight Yosemite Creek, how and where

  16. Correlation time of ocean ambient noise intensity in San Diego Bay and target recognition in acoustic daylight images

    E-Print Network [OSTI]

    Wadsworth, Adam J.

    2010-01-01T23:59:59.000Z

    Intensity Data Chapter 3 Acoustic Daylight Image TargetC. L. Epifanio. Acoustic Daylight: Passive Acoustic ImagingRecognition in Acoustic Daylight Images A Thesis submitted

  17. International Workshop on Geomechanics and Energy The Ground as Energy Source and Storage Lausanne, Switzerland, 26-28 November 2013

    E-Print Network [OSTI]

    Candea, George

    International Workshop on Geomechanics and Energy The Ground as Energy Source and Storage of shales is becoming one of the most important issues in modern geomechanics, largely driven by petroleum region of Switzerland. #12;International Workshop on Geomechanics and Energy The Ground as Energy

  18. Numerical Simulation of a Latent Heat Storage System of a Solar-Aided Ground Source Heat Pump

    E-Print Network [OSTI]

    Wang, F.; Zheng, M.; Li, Z.; Lei, B.

    2006-01-01T23:59:59.000Z

    In this study, the rectangular phase change storage tank (PCST) linked to a solar-aided ground source heat pump (SAGSHP) system is investigated experimentally and theoretically. The container of the phase change material (PCM) is the controlling...

  19. A comparison of ground source heat pumps and micro-combined heat and power as residential greenhouse gas reduction strategies

    E-Print Network [OSTI]

    Guyer, Brittany (Brittany Leigh)

    2009-01-01T23:59:59.000Z

    Both ground source heat pumps operating on electricity and micro-combined heat and power systems operating on fossil fuels offer potential for the reduction of green house gas emissions in comparison to the conventional ...

  20. Numerical Simulation of a Latent Heat Storage System of a Solar-Aided Ground Source Heat Pump

    E-Print Network [OSTI]

    Wang, F.; Zheng, M.; Li, Z.; Lei, B.

    2006-01-01T23:59:59.000Z

    In this study, the rectangular phase change storage tank (PCST) linked to a solar-aided ground source heat pump (SAGSHP) system is investigated experimentally and theoretically. The container of the phase change material (PCM) is the controlling...

  1. Recovery Act: Finite Volume Based Computer Program for Ground Source Heat Pump Systems

    SciTech Connect (OSTI)

    James A Menart, Professor

    2013-02-22T23:59:59.000Z

    This report is a compilation of the work that has been done on the grant DE-EE0002805 entitled ???垄????????Finite Volume Based Computer Program for Ground Source Heat Pump Systems.???垄???????聺 The goal of this project was to develop a detailed computer simulation tool for GSHP (ground source heat pump) heating and cooling systems. Two such tools were developed as part of this DOE (Department of Energy) grant; the first is a two-dimensional computer program called GEO2D and the second is a three-dimensional computer program called GEO3D. Both of these simulation tools provide an extensive array of results to the user. A unique aspect of both these simulation tools is the complete temperature profile information calculated and presented. Complete temperature profiles throughout the ground, casing, tube wall, and fluid are provided as a function of time. The fluid temperatures from and to the heat pump, as a function of time, are also provided. In addition to temperature information, detailed heat rate information at several locations as a function of time is determined. Heat rates between the heat pump and the building indoor environment, between the working fluid and the heat pump, and between the working fluid and the ground are computed. The heat rates between the ground and the working fluid are calculated as a function time and position along the ground loop. The heating and cooling loads of the building being fitted with a GSHP are determined with the computer program developed by DOE called ENERGYPLUS. Lastly COP (coefficient of performance) results as a function of time are provided. Both the two-dimensional and three-dimensional computer programs developed as part of this work are based upon a detailed finite volume solution of the energy equation for the ground and ground loop. Real heat pump characteristics are entered into the program and used to model the heat pump performance. Thus these computer tools simulate the coupled performance of the ground loop and the heat pump. The price paid for the three-dimensional detail is the large computational times required with GEO3D. The computational times required for GEO2D are reasonable, a few minutes for a 20 year simulation. For a similar simulation, GEO3D takes days of computational time. Because of the small simulation times with GEO2D, a number of attractive features have been added to it. GEO2D has a user friendly interface where inputs and outputs are all handled with GUI (graphical user interface) screens. These GUI screens make the program exceptionally easy to use. To make the program even easier to use a number of standard input options for the most common GSHP situations are provided to the user. For the expert user, the option still exists to enter their own detailed information. To further help designers and GSHP customers make decisions about a GSHP heating and cooling system, cost estimates are made by the program. These cost estimates include a payback period graph to show the user where their GSHP system pays for itself. These GSHP simulation tools should be a benefit to the advancement of GSHP system

  2. Finite Volume Based Computer Program for Ground Source Heat Pump System

    SciTech Connect (OSTI)

    Menart, James A. [Wright State University

    2013-02-22T23:59:59.000Z

    This report is a compilation of the work that has been done on the grant DE-EE0002805 entitled ?Finite Volume Based Computer Program for Ground Source Heat Pump Systems.? The goal of this project was to develop a detailed computer simulation tool for GSHP (ground source heat pump) heating and cooling systems. Two such tools were developed as part of this DOE (Department of Energy) grant; the first is a two-dimensional computer program called GEO2D and the second is a three-dimensional computer program called GEO3D. Both of these simulation tools provide an extensive array of results to the user. A unique aspect of both these simulation tools is the complete temperature profile information calculated and presented. Complete temperature profiles throughout the ground, casing, tube wall, and fluid are provided as a function of time. The fluid temperatures from and to the heat pump, as a function of time, are also provided. In addition to temperature information, detailed heat rate information at several locations as a function of time is determined. Heat rates between the heat pump and the building indoor environment, between the working fluid and the heat pump, and between the working fluid and the ground are computed. The heat rates between the ground and the working fluid are calculated as a function time and position along the ground loop. The heating and cooling loads of the building being fitted with a GSHP are determined with the computer program developed by DOE called ENERGYPLUS. Lastly COP (coefficient of performance) results as a function of time are provided. Both the two-dimensional and three-dimensional computer programs developed as part of this work are based upon a detailed finite volume solution of the energy equation for the ground and ground loop. Real heat pump characteristics are entered into the program and used to model the heat pump performance. Thus these computer tools simulate the coupled performance of the ground loop and the heat pump. The price paid for the three-dimensional detail is the large computational times required with GEO3D. The computational times required for GEO2D are reasonable, a few minutes for a 20 year simulation. For a similar simulation, GEO3D takes days of computational time. Because of the small simulation times with GEO2D, a number of attractive features have been added to it. GEO2D has a user friendly interface where inputs and outputs are all handled with GUI (graphical user interface) screens. These GUI screens make the program exceptionally easy to use. To make the program even easier to use a number of standard input options for the most common GSHP situations are provided to the user. For the expert user, the option still exists to enter their own detailed information. To further help designers and GSHP customers make decisions about a GSHP heating and cooling system, cost estimates are made by the program. These cost estimates include a payback period graph to show the user where their GSHP system pays for itself. These GSHP simulation tools should be a benefit to the advancement of GSHP systems.

  3. OpenStudio Enhancements for Whole-Building Daylighting, Airflow...

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

    aims to boost retrofit projects and enable project teams to easily integrate energy, daylight, and airflow modeling into their design workflows. View the Presentation OpenStudio...

  4. Singapore's Zero-Energy Building's daylight monitoring system

    E-Print Network [OSTI]

    Grobe, Lars

    2010-01-01T23:59:59.000Z

    Singapore抯 Zero-Energy Building抯 daylight monitoringof California. Singapore抯 Zero-Energy Building's daylightchambers in BCAA's Zero Energy Building in Singapore. These

  5. Integrating automated shading and smart glazings with daylight controls

    E-Print Network [OSTI]

    Selkowitz, Stephen; Lee, Eleanor

    2004-01-01T23:59:59.000Z

    Automated Shading and Smart Glazings with Daylight Controlsdaylighting, controls, smart glazing, shading, fielddeveloping switchable 搒mart glazings for over a decade and

  6. Acceleration of the matrix multiplication of Radiance three phase daylighting simulations

    E-Print Network [OSTI]

    LBNL-6461E Acceleration of the matrix multiplication of Radiance three phase daylighting multiplication of Radiance three phase daylighting simulations with parallel computing on heterogeneous hardware. Radiance, a lighting simulation program, has been used to conduct daylighting simulations for complex

  7. Does Daylight Saving Time Save Energy? Evidence from a Natural Experiment in Indiana

    E-Print Network [OSTI]

    Kotchen, Matthew J; Grant, Laura E.

    2008-01-01T23:59:59.000Z

    Does Extending Daylight Saving Time Save Energy? Evi- denceWP 179 Does Daylight Saving Time Save Energy? Evidence fromwww.ucei.org Does Daylight Saving Time Save Energy? Evidence

  8. The citation for this paper is: Spitler, J.D., X. Liu, S.J. Rees, C. Yavuzturk. 2005. Simulation and Optimization of Ground Source Heat

    E-Print Network [OSTI]

    are potentially more efficient than conventional air-to-air systems. In practice, ground-source heat pump systems and Optimization of Ground Source Heat Pump Systems. 8th International Energy Agency Heat Pump Conference. Las Vegas. May 30-June 2. 1 #12;SIMULATION AND OPTIMIZATION OF GROUND SOURCE HEAT PUMP SYSTEMS J.D. Spitler

  9. Optimal design of ground source heat pump system integrated with phase change cooling storage tank in an office building

    E-Print Network [OSTI]

    Zhu, N.

    2014-01-01T23:59:59.000Z

    Optimal design of ground source heat pump system integrated with phase change cooling storage tank in an office building Na Zhu*, Yu Lei, Pingfang Hu, Linghong Xu, Zhangning Jiang Department of Building Environment and Equipment Engineering... heat pump system integrated with phase change cooling storage technology could save energy and shift peak load. This paper studied the optimal design of a ground source heat pump system integrated with phase change thermal storage tank in an office...

  10. Tips for Daylighting with Windows

    SciTech Connect (OSTI)

    Robinson, Alastair; Selkowitz, Stephen

    2013-10-01T23:59:59.000Z

    These guidelines provide an integrated approach to the cost-effective design of perimeter zones in new commercial buildings and existing building retrofits. They function as a quick reference for building designers, through a set of easy steps and rules-of-thumb, emphasizing 揾ow-to practical details. References are given to more detailed sources of information, should the reader wish to go further. The design method used in this document emphasizes that building decisions should be made within the context of the whole building as a single functioning system rather than as an assembly of distinct parts. This integrated design approach looks at the ramifications of each individual system decision on the whole building. For example, the decision on glazing selection will have an effect on lighting, mechanical systems, and interior design. Therefore, the entire design team should participate and influence this glazing decision梬hich typically rests with the architect alone. The benefit of an integrated design approach is a greater chance of success towards long-term comfort and sustained energy savings in the building.

  11. The New York Times headquarters daylighting mockup: Monitoredperformance of the daylighting control system

    SciTech Connect (OSTI)

    Lee, Eleanor S.; Selkowitz, Stephen E.

    2006-02-24T23:59:59.000Z

    A nine-month monitored field study of the performance of automated roller shades and daylighting controls was conducted in a 401 m{sup 2} unoccupied, furnished daylighting mockup. The mockup mimicked the southwest corner of a new 110 km{sub 2} commercial building in New York, New York, where The New York Times will be the major tenant. This paper focuses on evaluating the performance of two daylighting control systems installed in separate areas of an open plan office with 1.2-m high workstation partitions: (1) Area A had 0-10 V dimmable ballasts with an open-loop proportional control system and an automated shade controlled to reduce window glare and increase daylight, and (2) Area B had digital addressable lighting interface (DALI) ballasts with a closed-loop integral reset control system and an automated shade controlled to block direct sun. Daylighting control system performance and lighting energy use were monitored. The daylighting control systems demonstrated very reliable performance after they were commissioned properly. Work plane illuminance levels were maintained above 90% of the maximum fluorescent illuminance level for 99.9{+-}0.5% and 97.9{+-}6.1% of the day on average over the monitored period, respectively, in Areas A and B. Daily lighting energy use savings were significant in both Areas over the equinox-to-equinox period compared to a non-daylit reference case. At 3.35 m from the window, 30% average savings were achieved with a sidelit west-facing condition in Area A while 50-60% were achieved with a bilateral daylit south-facing condition in Area B. At 4.57-9.14 m from the window, 5-10% and 25-40% savings were achieved in Areas A and B, respectively. Average savings for the 7-m deep dimming zone were 20-23% and 52-59% for Areas A and B, respectively, depending on the lighting schedule. The large savings and good reliability can be attributed to the automatic management of the interior shades. The DALI-based system exhibited faulty behavior that remains unexplained, but operational errors are expected to be resolved as DALI products reach full maturity. The building owner received very competitive bids ($30-75 US/DALI ballast) and was able to justify use of the daylighting control system based on operational cost savings and increased amenity. Additional energy savings due to reduced solar and lighting heat gains were not quantified but will add to the total operational cost savings.

  12. Green Classroom: Daylighting-conscious Design for Kuwait Autism Center

    E-Print Network [OSTI]

    Abdullah Al-mohaisen; Omar Khattab

    Consideration to the natural elements, such as daylighting, at the earliest in the architectural design process is suggested by many as necessary for sustainable buildings. The implementation of a successful daylighting strategy in the design of buildings improves spatial quality and saves energy required, otherwise, for artificial lighting. Daylighting becomes a design mandate in the case of certain spaces; e.g. classrooms in educational buildings. Many researchers have indicated a correlation between the way classrooms are designed and students ' performance. This paper discusses a case study of the environmental design of Kuwait Autism Centre that adopted the provision of adequate daylighting in educational spaces as a major design focus. An extensive daylighting evaluation was conducted on all educational facilities of the proposed conceptual design of the centre. The recommendations from the evaluation were implemented in the design development stages. Earlier conceptual design drawings as well as the final designs are described. The paper summarises the daylighting design recommendations and explains the daylighting simulation process and analysis for decision making in design. Additionally it shows the annual energy savings as a result of the daylighting-conscious design of the classrooms.

  13. Color and spectral analysis of daylight in southern Europe

    E-Print Network [OSTI]

    Javier Hern醤dez-andr閟; Javier Romero; Juan L. Nieves; Raymond L. Lee

    2001-01-01T23:59:59.000Z

    We have analyzed the colorimetric and spectral characteristics of 2600 daylight spectra (global spectral irradiances on a horizontal surface) measured for all sky states during a 2-year period at Granada, Spain. We describe in detail the chromaticity coordinates, correlated color temperatures (CCT), luminous efficacies, and relative UV and IR contents of Granada daylight. The chromaticity coordinates of Granada daylight lie far above the CIE locus at high CCTs (?9000 K), and a CCT of 5700 K best typifies this daylight. Our principalcomponents analysis shows that Granada daylight spectra can be adequately represented by using sixdimensional linear models in the visible, whereas seven-dimensional models are required if we include the UV or near-IR. Yet on average only three-dimensional models are needed to reconstruct spectra that are colorimetrically indistinguishable from the original spectra. 2001 Optical Society of America OCIS codes: 010.1290, 330.1710, 330.1730. 1.

  14. Daylighting, dimming, and the electricity crisis in California

    SciTech Connect (OSTI)

    Rubinstein, Francis; Neils, Danielle; Colak, Nesrin

    2001-09-17T23:59:59.000Z

    Dimming controls for electric lighting have been one of the mainstays of the effort to use daylighting to reduce annual lighting energy consumption. The coincidence of daylighting with electric utility peak demand makes daylighting controls an effective strategy for reducing commercial building peak electric loads. During times of energy shortage, there is a greatly increased need to reduce electricity use during peak periods, both to ease the burden on electricity providers and to control the operating costs of buildings. The paper presents a typical commercial building electric demand profile during summer, and shows how daylighting-linked lighting controls and load shedding techniques can reduce lighting at precisely those times when electricity is most expensive. We look at the importance of dimming for increasing the reliability of the electricity grid in California and other states, as well as examine the potential cost-effectiveness of widespread use of daylighting to save energy and reduce monthly electricity bills.

  15. Contamination source review for Building E3236, Edgewood Area, Aberdeen Proving Ground, Maryland

    SciTech Connect (OSTI)

    Zellmer, S.D.; Smits, M.P.; Draugelis, A.K.; Glennon, M.A.; Rueda, J.; Zimmerman, R.E.

    1995-09-01T23:59:59.000Z

    The US Army Aberdeen Proving Ground (APG) commissioned Argonne National Laboratory (ANL) to conduct a contamination source review to identify and define areas of toxic or hazardous contaminants and to assess the physical condition and accessibility of APG buildings. The information obtained from the review may be used to assist the US Army in planning for the future use or disposition of the buildings. The contamination source review consisted of the following tasks: historical records search, physical inspection, photographic documentation, geophysical investigation, and review of available records regarding underground storage tanks associated with each building. This report provides the results of the contamination source review for Building E3236. Many of the APG facilities constructed between 1917 and the 1960s are no longer used because of obsolescence and their poor state of repair. Because many of these buildings were used for research, development, testing, and/or pilot- scale production of chemical warfare agents and other military substances, the potential exists for portions of the buildings to be contaminated with these substances, their degradation products, and other laboratory or industrial chemicals. These buildings and associated structures or appurtenances may contribute to environmental concerns at APG.

  16. PARAMETRIC STUDY OF GROUND SOURCE HEAT PUMP SYSTEM FOR HOT AND HUMID CLMATE

    SciTech Connect (OSTI)

    Jiang Zhu; Yong X. Tao

    2011-11-01T23:59:59.000Z

    The U-tube sizes and varied thermal conductivity with different grout materials are studied based on the benchmark residential building in Hot-humid Pensacola, Florida. In this study, the benchmark building is metered and the data is used to validate the simulation model. And a list of comparative simulation cases with varied parameter value are simulated to study the importance of pipe size and grout to the ground source heat pump energy consumption. The simulation software TRNSYS [1] is employed to fulfill this task. The results show the preliminary energy saving based on varied parameters. Future work needs to be conducted for the cost analysis, include the installation cost from contractor and materials cost.

  17. Modeling of Standing Column Wells in Ground Source Heat Pump Systems Zheng Deng O'Neill, Ph.D., P.E.

    E-Print Network [OSTI]

    Modeling of Standing Column Wells in Ground Source Heat Pump Systems Zheng Deng O'Neill, Ph.D., P Montfort University, Leicester, United Kingdom 1. INTRODUCTION In recent years, ground source heat pump-surface environment: Ground-coupled heat pump (GCHP) systems (Closed-loop) Surface water heat pump (SWHP) systems

  18. (Daylight saving time (DST), implemented as an energy saving policy, impacts many other aspects of

    E-Print Network [OSTI]

    Levinson, David M.

    Abstract( (Daylight saving time (DST), implemented as an energy saving policy, impacts many other(of(DST( The idea of daylight saving time is to transfer an hour of morning daylight to the evening. It is achieved (3am-9am, 9am-3pm, 3pm-9pm, 9pm-12am). The(effects(of(daylight

  19. Anomalous trichromats' judgments of surface color in natural scenes under different daylights

    E-Print Network [OSTI]

    Foster, David H.

    Anomalous trichromats' judgments of surface color in natural scenes under different daylights daylight illuminants were presented on a high-resolution color monitor to 7 deuteranomalous, 7 to the daylight locus rather than along the daylight locus ~Foster & Linnell, 1995; Amano et al., 2003

  20. The effects of daylight saving time on vehicle crashes in Minnesota Arthur Huang a,

    E-Print Network [OSTI]

    Levinson, David M.

    The effects of daylight saving time on vehicle crashes in Minnesota Arthur Huang a, , David: Daylight saving time Vehicle crashes Exposure Traffic volume Introduction: Daylight saving time (DST analysis shows that overall DST reduces crashes. Impact on industry: Daylight saving time can lead to fewer

  1. Improving the daylighting conditions of existing buildings : the benefits and limitations of integrating anidolic daylighting systems using the American classroom as a model

    E-Print Network [OSTI]

    Kleindienst, Si鈔 A. (Si鈔 Alexandra)

    2006-01-01T23:59:59.000Z

    Awareness of the benefits of good daylighting has risen in recent years, and the designs of many new buildings take daylighting into consideration. However, the majority of our built environment is older than this recent ...

  2. A validation of the Radiance three-phase simulation method for modeling annual daylight performance of optically-complex fenestration systems

    E-Print Network [OSTI]

    McNeil, Andrew

    2013-01-01T23:59:59.000Z

    J. , 2011. Simulating the Daylight Performance of Complexof dynamic RADIANCE-based daylight simulations for a testS.E. , 1998. Energy and Daylight Performance of Angular

  3. Ground-Source Integrated Heat Pump for Near-Zero Energy Houses: Technology Status Report

    SciTech Connect (OSTI)

    Murphy, Richard W [ORNL; Rice, C Keith [ORNL; Baxter, Van D [ORNL; Craddick, William G [ORNL

    2007-09-01T23:59:59.000Z

    The energy service needs of a net-zero-energy house (ZEH) include space heating and cooling, water heating, ventilation, dehumidification, and humidification, depending on the requirements of the specific location. These requirements differ in significant ways from those of current housing. For instance, the most recent DOE buildings energy data (DOE/BED 2007) indicate that on average {approx}43% of residential buildings primary energy use is for space heating and cooling, vs. {approx}12% for water heating (about a 3.6:1 ratio). In contrast, for the particular prototype ZEH structures used in the analyses in this report, that ratio ranges from about 0.3:1 to 1.6:1 depending on location. The high-performance envelope of a ZEH results in much lower space heating and cooling loads relative to current housing and also makes the house sufficiently air-tight to require mechanical ventilation for indoor air quality. These envelope characteristics mean that the space conditioning load will be closer in size to the water heating load, which depends on occupant behavior and thus is not expected to drop by any significant amount because of an improved envelope. In some locations such as the Gulf Coast area, additional dehumidification will almost certainly be required during the shoulder and cooling seasons. In locales with heavy space heating needs, supplemental humidification may be needed because of health concerns or may be desired for improved occupant comfort. The U.S. Department of Energy (DOE) has determined that achieving their ZEH goal will require energy service equipment that can meet these needs while using 50% less energy than current equipment. One promising approach to meeting this requirement is through an integrated heat pump (IHP) - a single system based on heat pumping technology. The energy benefits of an IHP stem from the ability to utilize otherwise wasted energy; for example, heat rejected by the space cooling operation can be used for water heating. With the greater energy savings the cost of the more energy efficient components required for the IHP can be recovered more quickly than if they were applied to individual pieces of equipment to meet each individual energy service need. An IHP can be designed to use either outdoor air or geothermal resources (e.g., ground, ground water, surface water) as the environmental energy source/sink. Based on a scoping study of a wide variety of possible approaches to meeting the energy service needs for a ZEH, DOE selected the IHP concept as the most promising and has supported research directed toward the development of both air- and ground-source versions. This report describes the ground-source IHP (GS-IHP) design and includes the lessons learned and best practices revealed by the research and development (R&D) effort throughout. Salient features of the GS-IHP include a variable-speed rotary compressor incorporating a brushless direct current permanent magnet motor which provides all refrigerant compression, a variable-speed fan for the indoor section, a multiple-speed ground coil circuit pump, and a single-speed pump for water heating operation. Laboratory IHP testing has thus far used R-22 because of the availability of the needed components that use this refrigerant. It is expected that HFC R-410A will be used for any products arising from the IHP concept. Data for a variable-speed compressor that uses R-410A has been incorporated into the DOE/ORNL Mark VI Heat Pump Design Model (HPDM). HPDM was then linked to TRNSYS, a time-series-dependent simulation model capable of determining the energy use of building cooling and heating equipment as applied to a defined house on a sub-hourly basis. This provided a highly flexible design analysis capability for advanced heat pump equipment; however, the program also took a relatively long time to run. This approach was used with the initial prototype design reported in Murphy et al. (2007a) and in the business case analysis of Baxter (2007).

  4. Daylight variability and contrast-driven architectural effect

    E-Print Network [OSTI]

    Rockcastle, Siobhan Francois

    2011-01-01T23:59:59.000Z

    Natural light is a dynamic and ephemeral tool for expressing the quality of architectural space. As a compliment to more traditional avenues of daylighting research that assess performance in terms of quantitative illuminance ...

  5. An intuitive daylighting performance analysis and optimization approach

    E-Print Network [OSTI]

    Andersen, Marilyne

    The effective integration of daylighting considerations into the design process requires many issues to be considered simultaneously, such as daily and seasonal variations, illumination, and thermal comfort. To address the ...

  6. Automated support for experimental approaches in daylighting performances assessment

    E-Print Network [OSTI]

    Ljubicic, Dean M

    2006-01-01T23:59:59.000Z

    The study of daylight and solar reflection has been a topic of increasing interest over the past two decades. A novel mechanical support has been constructed to help better understand this topic that consists of a five ...

  7. DAYLIGHTING IN CAMBRIDGE LIBRARIES: SHIFTING FOCUS OVER TIME

    E-Print Network [OSTI]

    Ayona Datta

    This paper aims to explore the various transformations of Cambridge libraries over the ages focusing mainly on the changing role of daylighting in library design. The libraries have been categorised chronologically into four different groups: Medieval libraries, libraries between 16 th cent and Reformation, libraries between Reformation and 19 th cent and modern libraries. The study shows that with the shift from the rules of classicism in medieval libraries to individual styles in modern libraries, the architect has opened up enormous possibilities for design innovations in daylighting. Unlike other environmental services the elements of daylighting are undoubtedly the most visual and expressive. The particular challenge of modern library design is to manipulate natural light for reading and book storage while avoiding reflections on the VDU. It is still a field not fully explored and it remains to be seen how daylighting design can successfully meet all the needs of a modern library. 1.

  8. In-Depth Look at Ground Source Heat Pumps and Other Electric Loads in Two GreenMax Homes

    SciTech Connect (OSTI)

    Puttagunta, S.; Shapiro, C.

    2012-04-01T23:59:59.000Z

    CARB partnered with WPPI Energy to answer key research questions on in-field performance of ground-source heat pumps and LAMELs through extensive field monitoring at two WPPI GreenMax demonstration homes in Wisconsin. These two test home evaluations provided valuable data on the true in-field performance of various building mechanical systems and lighting, appliances, and miscellaneous loads (LAMELs).

  9. Analysis of Selection of Single or Double U-bend Pipes in a Ground Source Heat Pump System

    E-Print Network [OSTI]

    Shu, H.; Duanmu, L.; Hua, R.

    2006-01-01T23:59:59.000Z

    The ground source heat pump (GSHP) system is widely used because of its energy-saving and environmental-friendly characteristics. The buried pipes heat exchangers play an important role in the whole GSHP system design. However, in most cases, single...

  10. Impacts of Soil and Pipe Thermal Conductivity on Performance of Horizontal Pipe in a Ground-source Heat Pump

    E-Print Network [OSTI]

    Song, Y.; Yao, Y.; Na, W.

    2006-01-01T23:59:59.000Z

    In this paper the composition and thermal property of soil are discussed. The main factors that impact the soil thermal conductivity and several commonly-used pipe materials are studied. A model of heat exchanger with horizontal pipes of ground-source...

  11. Hybrid Ground-Source Heat Pump Installations: Experiences, Improvements, and Tools

    SciTech Connect (OSTI)

    Scott Hackel; Amanda Pertzborn

    2011-06-30T23:59:59.000Z

    One innovation to ground-source heat pump (GSHP, or GHP) systems is the hybrid GSHP (HyGSHP) system, which can dramatically decrease the first cost of GSHP systems by using conventional technology (such as a cooling tower or a boiler) to meet a portion of the peak heating or cooling load. This work uses three case studies (two cooling-dominated, one heating-dominated) to demonstrate the performance of the hybrid approach. Three buildings were studied for a year; the measured data was used to validate models of each system. The models were used to analyze further improvements to the hybrid approach, and establish that this approach has positive impacts, both economically and environmentally. Lessons learned by those who design and operate the systems are also documented, including discussions of equipment sizing, pump operation, and cooling tower control. Finally, the measured data sets and models that were created during this work are described; these materials have been made freely available for further study of hybrid systems.

  12. Geothermal(Ground-Source)Heat Pumps: Market Status, Barriers to Adoption, and Actions to Overcome Barriers

    SciTech Connect (OSTI)

    Hughes, Patrick [ORNL

    2008-12-01T23:59:59.000Z

    More effective stewardship of our resources contributes to the security, environmental sustainability, and economic well-being of the nation. Buildings present one of the best opportunities to economically reduce energy consumption and limit greenhouse gas emissions. Geothermal heat pumps (GHPs), sometimes called ground-source heat pumps, have been proven capable of producing large reductions in energy use and peak demand in buildings. However, GHPs have received little attention at the policy level as an important component of a national strategy. Have policymakers mistakenly overlooked GHPs, or are GHPs simply unable to make a major contribution to the national goals for various reasons? This brief study was undertaken at DOE's request to address this conundrum. The scope of the study includes determining the status of global GHP markets and the status of the GHP industry and technology in the United States, assembling previous estimates of GHP energy savings potential, identifying key barriers to application of GHPs, and identifying actions that could accelerate market adoption of GHPs. The findings are documented in this report along with conclusions and recommendations.

  13. Application analysis of ground source heat pumps in building space conditioning

    SciTech Connect (OSTI)

    Qian, Hua; Wang, Yungang

    2013-07-01T23:59:59.000Z

    The adoption of geothermal energy in space conditioning of buildings through utilizing ground source heat pump (GSHP, also known as geothermal heat pump) has increased rapidly during the past several decades. However, the impacts of the GSHP utilization on the efficiency of heat pumps and soil temperature distribution remained unclear and needs further investigation. This paper presents a novel model to calculate the soil temperature distribution and the coefficient of performance (COP) of GSHP. Different scenarios were simulated to quantify the impact of different factors on the GSHP performance, including heat balance, daily running mode, and spacing between boreholes. Our results show that GSHP is suitable for buildings with balanced cooling and heating loads. It can keep soil temperature at a relatively constant level for more than 10 years. Long boreholes, additional space between boreholes, intermittent running mode will improve the performance of GSHP, but large initial investment is required. The improper design will make the COP of GSHP even lower than traditional heat pumps. Professional design and maintenance technologies are greatly needed in order to promote this promising technology in the developing world.

  14. Interfacing BIM with Building Thermal and Daylighting Modeling

    E-Print Network [OSTI]

    Yan, Wei; Clayton, Mark; Haberl, Jeff; WoonSeong, Jeong; Bun Kim, Jong; Sandeep, Kota; Bermudez, Jose; Dixit, Manish

    INTERFACING BIM WITH BUILDING THERMAL AND DAYLIGHTING MODELING Wei Yan, Mark Clayton, Jeff Haberl, WoonSeong Jeong, Jong Bum Kim, Sandeep Kota, Jose Luis Bermudez Alcocer, and Manish Dixit Texas A&M University, College Station, USA... the BIM authoring tools Application Programming Interface (API) to translate BIM into Object-Oriented Physical Models (in Modelica) for building thermal simulation, and input files of ray-tracing software (Radiance) for daylighting simulation. Based...

  15. Advanced optical daylighting systems: light shelves and light pipes

    SciTech Connect (OSTI)

    Beltran, L.O.; Lee, E.S.; Selkowitz, S.E.

    1996-05-01T23:59:59.000Z

    We present two perimeter daylighting systems that passively redirect beam sunlight further from the window wall using special optical films, an optimized geometry, and a small glazing aperture. The objectives of these systems are (1) to increase daylight illuminance levels at 4.6-9.1 m (15-30 ft) from the window aperture with minimum solar heat gains and (2) to improve the uniformity of the daylighting luminance gradient across the room under variable solar conditions throughout the year. The designs were developed through a series of computer-assisted ray-tracing studies, laser visualization techniques, and photometric measurements and observations using physical scale models. Bi-directional illuminance measurements in combination with analytical routines were then used to simulate daylight performance for any solar position, and were incorporated into the DOE-2.1E building energy analysis computer program to evaluate energy savings. Results show increased daylight levels and an improved luminance gradient throughout the year compared to conventional daylighting systems.

  16. Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    Annex 29, Daylight in Buildings. October, 1997. Atif. M.R.case studies. Energy and Buildings 35 441-461. Attmann,George. 2010. Sustainable Buildings in Practice: What the

  17. Exergy and Energy analysis of a ground-source heat pump for domestic water heating under simulated occupancy conditions

    SciTech Connect (OSTI)

    Ally, Moonis Raza [ORNL; Munk, Jeffrey D [ORNL; Baxter, Van D [ORNL; Gehl, Anthony C [ORNL

    2012-01-01T23:59:59.000Z

    This paper presents detailed analysis of a water to water ground source heat pump (WW-GSHP) to provide all the hot water needs in a 345 m2 house located in DOE climate zone 4 (mixed-humid). The protocol for hot water use is based on the Building America Research Benchmark Definition (Hendron 2008; Hendron and Engebrecht 2010) which aims to capture the living habits of the average American household and its impact on energy consumption. The entire house was operated under simulated occupancy conditions. Detailed energy and exergy analysis provides a complete set of information on system efficiency and sources of irreversibility, the main cause of wasted energy. The WW-GSHP was sized at 5.275 kW (1.5-ton) for this house and supplied hot water to a 303 L (80 gal) water storage tank. The WW-GSHP shared the same ground loop with a 7.56 kW (2.1-ton) water to air ground source heat pump (WA-GSHP) which provided space conditioning needs to the entire house. Data, analyses, and measures of performance for the WW-GSHP in this paper complements the results of the WA-GSHP published in this journal (Ally, Munk et al. 2012). Understanding the performance of GSHPs is vital if the ground is to be used as a viable renewable energy resource.

  18. Plasma lighting, fiber optics, and daylight collectors: Toward the next revolution in high-efficiency illumination

    SciTech Connect (OSTI)

    Audin, L. [Columbia Univ., New York, NY (United States)

    1995-06-01T23:59:59.000Z

    Combining three recently marketed innovations may provide the next revolution in illumination, making many other recent advances eventually obsolete. The first is plasma lighting, pioneered by Fusion Lighting Inc. of Rockville, Maryland, and first commercially applied by Hutchins International Ltd. of Mississauga, Ontario. This microwave-generated light source yields very high-quality light with efficacies at or beyond high intensity discharge (HID) lamps. The source uses no mercury, thus eliminating lamp disposal problems, and has no cathode, thereby providing very long lamp life. Using no phosphors, it also has very short start and re-strike periods, and is dimmable. The second innovation is in the distribution of light. Commercial developments in fiber optics and light guides now provide products that transfer light from a remote point and distribute it like standard light fixtures. Advances in fiber optic communications and applications to decorative lighting have supplied relatively economical systems for mounting and directing light from both electric light sources and the sun. The third advance is a result of efforts to harness daylight. Unlike architectural daylighting that directs sunlight into perimeter areas through glazing, daylight collectors are roof-mounted devices that supply light to interior and underground spaces through hollow columns and open chases. Aided by improvements and cost reductions in sun-tracking (i.e., heliostatic) controls that capture and concentrate sunlight, such collectors offer a source of free light to locations that might otherwise never receive it. When combined together, these three options could offer a centralized building lighting system that pipes lumens to distribution devices replacing many existing lamps and fixtures.

  19. What is Nonpoint Source Pollution? Nonpoint Source Pollution, or people pollution, is a contamination of our ground water,

    E-Print Network [OSTI]

    Rainforth, Emma C.

    , recreational water activities, the fishing industry, tourism and our precious drinking water resources, humans and fish. Do not dump used motor oil down storm drains or on the ground. Recycle all used motor such as fertilizing the lawn, walking pets, changing motor oil and littering. With each rainfall, pollutants generated

  20. GEO Down Under The Ground Source Industry in Australia and New Zealand

    E-Print Network [OSTI]

    warranty) PE fusion Building Code Electrical / plumbing etc Energy Star rocks and energy genera8on to most North side of house has greatest solar: Professor Ian Johnston Focus: 3D Modelling of Energy Piles and Ground Heat

  1. Measured Space Conditioning and Water Heating Performance of a Ground-Source Integrated Heat Pump in a Residential Application

    SciTech Connect (OSTI)

    Munk, Jeffrey D [ORNL] [ORNL; Ally, Moonis Raza [ORNL] [ORNL; Baxter, Van D [ORNL] [ORNL; Gehl, Anthony C [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    In an effort to reduce residential building energy consumption, a ground-source integrated heat pump was developed to meet a home s entire space conditioning and water heating needs, while providing 50% energy savings relative to a baseline suite of minimum efficiency equipment. A prototype 7.0 kW system was installed in a 344 m2 research house with simulated occupancy in Oak Ridge, TN. The equipment was monitored from June 2012 through January 2013.

  2. Magnetospheric application of high-altitude long-duration balloon technology: Daylight auroral observations

    E-Print Network [OSTI]

    Lummerzheim, Dirk

    Magnetospheric application of high-altitude long-duration balloon technology: Daylight auroral; accepted 12 February 2007 Abstract Daylight auroral imaging is a proposed application of the NASA high

  3. Graphical Representation of Climate-Based Daylight Performance to Support Architectural Design

    E-Print Network [OSTI]

    Kleindienst, Si鈔

    Many conventional daylighting design tools are limited in that each simulation represents only one time of year and time of day (or a single, theoretical overcast sky condition). Since daylight is so variable due to the ...

  4. Question of the Week: How Do You Feel About the Extended Daylight...

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

    Feel About the Extended Daylight Saving Time? Question of the Week: How Do You Feel About the Extended Daylight Saving Time? March 12, 2009 - 6:00am Addthis Have you been drinking...

  5. Historical Survey of Daylighting Calculations Methods and Their Use in Energy Performance Simulations

    E-Print Network [OSTI]

    Kota, S.; Haberl, J. S.

    This paper traces the historical development of different daylighting calculation methods. Over the years there have been several developments in daylighting calculation methods. The last two decades have seen a number of new ideas and approaches...

  6. The Soralux Daylighting System : passive solar illumination for deep-plan building spaces

    E-Print Network [OSTI]

    Thuot, Kevin W. (Kevin William)

    2011-01-01T23:59:59.000Z

    Daylight is a valuable resource for both energy and human health. However, this resource is often underutilized in buildings due to the difficulty of controlling the changing qualities of daylight. Deep-plan building spaces ...

  7. Lighting energy savings potential of split-pane electrochromic windows controlled for daylighting with visual comfort

    E-Print Network [OSTI]

    Fernandes, Luis

    2014-01-01T23:59:59.000Z

    Energy Performance of Electrochromic Windows Controlled forenergy performance of electrochromic windows. Proceedingssignal for daylight (electrochromic window, no overhang).

  8. Foundation heat exchangers for residential ground source heat pump systems Numerical modeling and experimental validation

    SciTech Connect (OSTI)

    Xing, Lu [Oklahoma State University; Cullin, James [Oklahoma State University; Spitler, Jeffery [Oklahoma State University; Im, Piljae [ORNL; Fisher, Daniel [Oklahoma State University

    2011-01-01T23:59:59.000Z

    A new type of ground heat exchanger that utilizes the excavation often made for basements or foundations has been proposed as an alternative to conventional ground heat exchangers. This article describes a numerical model that can be used to size these foundation heat exchanger (FHX) systems. The numerical model is a two-dimensional finite-volume model that considers a wide variety of factors, such as soil freezing and evapotranspiration. The FHX numerical model is validated with one year of experimental data collected at an experimental house located near Oak Ridge, Tennessee. The model shows good agreement with the experimental data-heat pump entering fluid temperatures typically within 1 C (1.8 F) - with minor discrepancies due to approximations, such as constant moisture content throughout the year, uniform evapotranspiration over the seasons, and lack of ground shading in the model.

  9. DELIGHT2 DAYLIGHTING ANALYSIS IN ENERGY PLUS: INTEGRATION AND PRELIMINARY USER RESULTS

    E-Print Network [OSTI]

    DELIGHT2 DAYLIGHTING ANALYSIS IN ENERGY PLUS: INTEGRATION AND PRELIMINARY USER RESULTS William L for daylight and electric lighting system analysis in buildings. DElight calculates interior illuminance levels from daylight, and the subsequent contribution required from electric lighting to meet a desired

  10. USING VIDEO FOR ANALYZING DAYLIGHT SIMULATION TOOLS Daniel C. Glaser1

    E-Print Network [OSTI]

    Varela, Carlos

    USING VIDEO FOR ANALYZING DAYLIGHT SIMULATION TOOLS Daniel C. Glaser1 , F. Whitney Smith2 , Barb socio-technical techniques can be employed to analyze video data of people using daylight simulation, a classic daylighting analysis tool; and in the second a lighting professional is asked to use a new data

  11. Calculating correlated color temperatures across the entire gamut of daylight and skylight chromaticities

    E-Print Network [OSTI]

    Lee Jr., Raymond L.

    Calculating correlated color temperatures across the entire gamut of daylight and skylight daylight and skylight spectra to test an equation that accurately maps CIE 1931 chromaticities x and y by daylight and skylight. 漏 1999 Optical Society of America OCIS codes: 010.1290, 330.1710, 330.1730. 1

  12. Development of a new model to predict indoor daylighting : integration in CODYRUN software and validation

    E-Print Network [OSTI]

    Paris-Sud XI, Universit茅 de

    1 Development of a new model to predict indoor daylighting : integration in CODYRUN software in the scientific literature for determining indoor daylighting values. They are classified in three categories. The originality of our paper relies on the coupling of several simplified models of indoor daylighting

  13. The following VS tools were compared: 2D OPENBABEL, DAYLIGHT2

    E-Print Network [OSTI]

    Ritchie, Dave

    The following VS tools were compared: 2D 颅 OPENBABEL, DAYLIGHT2 , MACCS. BCI, MOLPRINT2D3 3D 颅 ROCS Software Inc., Cepos Insilico Ltd., Chemical Computing Group, DAYLIGHT, Chemical Information Systems and Digital Chemistry for providing Academic Licences for ROCS, ParaSurf, MOE, DAYLIGHT, and BCI, respectively

  14. Daylighting control performance of a thin-film ceramic electrochromic window: field study results

    E-Print Network [OSTI]

    1 Daylighting control performance of a thin-film ceramic electrochromic window: field study results of this emerging technology. Keywords: Building energy-efficiency; Electrochromic windows; Daylighting; Control switched across their dynamic range and could be fully integrated into a complete daylight, glare

  15. AUTOMATING THE SELECTION OF FENESTRATION SYSTEMS TO BEST MEET DAYLIGHTING PERFORMANCE GOALS

    E-Print Network [OSTI]

    AUTOMATING THE SELECTION OF FENESTRATION SYSTEMS TO BEST MEET DAYLIGHTING PERFORMANCE GOALS Lu铆s closer to producing the desired flux distribution from the outdoor daylight distribution. INTRODUCTION The selection of fenestration systems for daylighting is traditionally done by trial and error. Designers try

  16. P5.60B DERIVATION OF DAYLIGHT AND SOLAR IRRADIANCE DATA FROM SATELLITE OBSERVATIONS

    E-Print Network [OSTI]

    Heinemann, Detlev

    P5.60B DERIVATION OF DAYLIGHT AND SOLAR IRRADIANCE DATA FROM SATELLITE OBSERVATIONS A. Hammer, D project SATELLIGHT an attempt is made to use satellite methods to derive daylight and solar irradiance). In daylighting applications, knowledge of the lumi- nance distribution of the sky is of primary concern. Thus

  17. ACTIVITY OF HAWAIIAN REEF FISHES DURING THE EVENING AND MORNING TRANSITIONS BETWEEN DAYLIGHT AND DARKNESS

    E-Print Network [OSTI]

    ACTIVITY OF HAWAIIAN REEF FISHES DURING THE EVENING AND MORNING TRANSITIONS BETWEEN DAYLIGHT inactive at night, the latter mainly inactive in daylight. During active periods their behavior, with the diurnal species mostly inactive in darkness and the nocturnal species mostly inactive in daylight (Hobson

  18. Inverse Modeling Using a Wireless Sensor Network (WSN) for Personalized Daylight Harvesting

    E-Print Network [OSTI]

    Agogino, Alice M.

    Inverse Modeling Using a Wireless Sensor Network (WSN) for Personalized Daylight Harvesting Ryan: predictive: daylight harvesting: piecewise linear regression: building energy efficiency Abstract: Smart light levels, discretized by sub-hourly sun angles. Applied on two days of daylight and ten days

  19. SunCast: Fine-grained Prediction of Natural Sunlight Levels for Improved Daylight Harvesting

    E-Print Network [OSTI]

    Whitehouse, Kamin

    SunCast: Fine-grained Prediction of Natural Sunlight Levels for Improved Daylight Harvesting, USA {jklu,whitehouse}@cs.virginia.edu ABSTRACT Daylight harvesting is the use of natural sunlight to reduce the need for artificial lighting in buildings. The key challenge of daylight harvesting

  20. Robustness of circadian clocks to daylight fluctuations: hints from the picoeucaryote

    E-Print Network [OSTI]

    Lefranc, Marc

    1 Robustness of circadian clocks to daylight fluctuations: hints from the picoeucaryote in daylight intensity on the core circadian oscillator, a type of perturbation that has been rarely considered strategy to shield the circadian clock from daylight fluctuations by localizing coupling to the light

  1. Robustness of circadian clocks to daylight fluctuations: hints from the picoeucaryote

    E-Print Network [OSTI]

    1 Robustness of circadian clocks to daylight fluctuations: hints from the picoeucaryote a strategy to minimize the impact of fluctuations in daylight intensity on the core circadian oscillator daylight fluctuations by localizing coupling to the light during specific time intervals. In our model

  2. Using Simple Light Sensors to Achieve Smart Daylight Harvesting Jiakang Lu, Dagnachew Birru, Kamin Whitehouse

    E-Print Network [OSTI]

    Whitehouse, Kamin

    Using Simple Light Sensors to Achieve Smart Daylight Harvesting Jiakang Lu, Dagnachew Birru, Kamin demonstrate how to improve the effectiveness of daylight harvesting with a sin- gle light sensor on each sky to predict the incoming daylight and set window transparency accordingly. We evaluate our system

  3. Empirical assessment of a prismatic daylight-redirecting window film in a full-scale office

    E-Print Network [OSTI]

    LBNL-6496E Empirical assessment of a prismatic daylight- redirecting window film in a full in Leukos, the journal of the IESNA. Empirical assessment of a prismatic daylight- redirecting window film Laboratory, Mailstop 90-3111, 1 Cyclotron Road, Berkeley, CA 94720 USA Abstract Daylight redirecting systems

  4. Time for a Change? It's not just Daylight Savings Time that should be abolished!

    E-Print Network [OSTI]

    1 Time for a Change? It's not just Daylight Savings Time that should be abolished! Sunday, March 11. It is just that the clocks are set differently! By government edict! I advocate not just abolishing Daylight of time zone and/or daylight savings time confusion. Every clock and wristwatch in the world would show

  5. Robustness of Circadian Clocks to Daylight Fluctuations: Hints from the Picoeucaryote Ostreococcus tauri

    E-Print Network [OSTI]

    Lefranc, Marc

    Robustness of Circadian Clocks to Daylight Fluctuations: Hints from the Picoeucaryote Ostreococcus in daylight intensity on the core circadian oscillator, a type of perturbation that has been rarely considered F, Bouget F-Y, et al. (2010) Robustness of Circadian Clocks to Daylight Fluctuations: Hints from

  6. Annual daylighting performance of a passive optical light shelf in sidelit perimeter zones of

    E-Print Network [OSTI]

    Annual daylighting performance of a passive optical light shelf in sidelit perimeter zones Government or any agency thereof or The Regents of the University of California. #12;1 Annual daylighting use in deep perimeter zones of buildings where the windows are subject to high daylight availability

  7. DARKNESS, TWILIGHT, AND DAYLIGHT FORAGING SUCCESS OF BEARS (URSUS AMERICANUS) ON SALMON

    E-Print Network [OSTI]

    Reimchen, Thomas E.

    DARKNESS, TWILIGHT, AND DAYLIGHT FORAGING SUCCESS OF BEARS (URSUS AMERICANUS) ON SALMON IN COASTAL (2000颅2002). Bears (maximum 7 simultaneously) were primarily active during daylight near the onset with other bears (4%). Scavenging was greatest during daylight (19%) and lowest during darkness (3%). Bears

  8. Singapore's Zero-Energy Building's daylight monitoring system

    SciTech Connect (OSTI)

    Grobe, Lars; Wittkopf, Stephen; Pandey, Anupama Rana; Xiaoming, Yang; Seng, Ang Kian; Scartezzini, Jean-Louis; Selkowitz, Stephen

    2010-02-28T23:59:59.000Z

    A setup to monitor the daylighting performance of different glazing types in Singapore is presented. The glazing is installed in the facade of four dedicated testing chambers in BCAA's Zero Energy Building in Singapore. These test rooms are equipped with sensors that both record illuminances on the work plane, and luminances as seen by occupants. The physical and logical design of the monitoring system is presented. Criteria to assess the daylighting performance are introduced, and initial results of the work in progress are presented.

  9. Analysis of Daylighting Requirements within ASHRAE Standard 90.1

    SciTech Connect (OSTI)

    Athalye, Rahul A.; Xie, YuLong; Liu, Bing; Rosenberg, Michael I.

    2013-08-01T23:59:59.000Z

    Pacific Northwest National Laboratory (PNNL), under the Building Energy Codes Program (BECP) funded by U.S. Department of Energy (DOE), provides support to the ASHRAE/IES/IESNA Standard 90.1(Standard 90.1) Standing Standards Project Committee (SSPC 90.1) and its subcommittees. In an effort to provide the ASHRAE SSPC 90.1 with data that will improve the daylighting and fenestration requirements in the Standard, PNNL collaborated with Heschong Mahone Group (HMG), now part of TRC Solutions. Combining EnergyPlus, a whole-building energy simulation software developed by DOE, with Radiance, a highly accurate illumination modeling software (Ward 1994), the daylighting requirements within Standard 90.1 were analyzed in greater detail. The initial scope of the study was to evaluate the impact of the fraction of window area compared to exterior wall area (window-to-wall ratio (WWR)) on energy consumption when daylighting controls are implemented. This scope was expanded to study the impact of fenestration visible transmittance (VT), electric lighting controls and daylighted area on building energy consumption.

  10. Daylight quantum key distribution over 1.6 km

    E-Print Network [OSTI]

    W. T. Buttler; R. J. Hughes; S. K. Lamoreaux; G. L. Morgan; J. E. Nordholt; C. G. Peterson

    2000-01-25T23:59:59.000Z

    Quantum key distribution (QKD) has been demonstrated over a point-to-point $\\sim1.6$-km atmospheric optical path in full daylight. This record transmission distance brings QKD a step closer to surface-to-satellite and other long-distance applications.

  11. Assessing the Feasibility of Creek Daylighting in San Francisco, Part I: A Synthesis of Lessons Learned from Existing Urban Daylighting Projects

    E-Print Network [OSTI]

    Smith, Brooke Ray

    2007-01-01T23:59:59.000Z

    Factors in Environmental Restoration: Strawberry Creek andBaxter Creek. Water Resource Center Archives, University ofNiazi. 2005. Blackberry Creek Daylighting Project, Berkeley:

  12. Technical Feasibility Study for Deployment of Ground-Source Heat Pump Systems: Portsmouth Naval Shipyard -- Kittery, Maine

    SciTech Connect (OSTI)

    Hillesheim, M.; Mosey, G.

    2014-11-01T23:59:59.000Z

    The U.S. Environmental Protection Agency (EPA) Office of Solid Waste and Emergency Response, in accordance with the RE-Powering America's Lands initiative, engaged the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) to conduct feasibility studies to assess the viability of developing renewable energy generating facilities on contaminated sites. Portsmouth Naval Shipyard (PNSY) is a United States Navy facility located on a series of conjoined islands in the Piscataqua River between Kittery, ME and Portsmouth, NH. EPA engaged NREL to conduct a study to determine technical feasibility of deploying ground-source heat pump systems to help PNSY achieve energy reduction goals.

  13. Integrated Heat Pump (IHP) System Development - Air-Source IHP Control Strategy and Specifications and Ground-Source IHP Conceptual Design

    SciTech Connect (OSTI)

    Murphy, Richard W [ORNL; Rice, C Keith [ORNL; Baxter, Van D [ORNL

    2007-05-01T23:59:59.000Z

    The integrated heat pump (IHP), as one appliance, can provide space cooling, heating, ventilation, and dehumidification while maintaining comfort and meeting domestic water heating needs in near-zero-energy home (NZEH) applications. In FY 2006 Oak Ridge National Laboratory (ORNL) completed development of a control strategy and system specification for an air-source IHP. The conceptual design of a ground-source IHP was also completed. Testing and analysis confirm the potential of both IHP concepts to meet NZEH energy services needs while consuming 50% less energy than a suite of equipment that meets current minimum efficiency requirements. This report is in fulfillment of an FY06 DOE Building Technologies (BT) Joule Milestone.

  14. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

    E-Print Network [OSTI]

    Hong, Tainzhen

    2010-01-01T23:59:59.000Z

    multiple water-to-air heat pump units, which are connectedeach of the water-to-air heat pump units can run in eitheras other types of air source heat pumps, VRF systems need

  15. Characterization of ammonia emissions from ground level area sources at central texas dairies

    E-Print Network [OSTI]

    Mutlu, Atilla

    2009-05-15T23:59:59.000Z

    ) to potentially develop source specific NH3 emission control strategies. The GLAS including open-lots, free-stall barns, separated solids, primary and secondary lagoons and milking parlor were sampled to estimate NH3 emissions. In the first study, assessment...

  16. Air dispersion modeling of particulate matter from ground-level area sources

    E-Print Network [OSTI]

    Meister, Michael Todd

    2000-01-01T23:59:59.000Z

    obtained from a dispersion model. The model currently approved by EPA, the Industrial Source Complex, Version 3 - Short Term (ISC3-ST), over-predicts downwind concentrations of PM by as much two orders of magnitude. As a result, a facility may be denied a...

  17. BIM-Centric Daylight Profiler for Simulation (BDP4SIM): A Methodology for Automated Product Model Decomposition and Recomposition for Climate-Based Daylighting Simulation

    E-Print Network [OSTI]

    Benjamin Welle; Zack Rogers; Martin Fischer; Benjamin Welle A; Zack Rogers B; Martin Fischer

    2012-01-01T23:59:59.000Z

    Flexible problem formulation is required for product model-based thermal analysis using multidisciplinary design optimization (MDO) environments for cost-effectiveness, accuracy, and scalability in the Architecture, Engineering, and Construction (AEC) industry. The integration of daylighting simulation into an MDO process, however, presents several implementation challenges. In current practice, the process of an architect, engineer, or daylighting consultant to determine how to analyze a given building design for daylighting performance is frequently subjective, time-consuming, and inconsistent. Furthermore, long simulation time requirements for daylighting significantly hinder the realization of many benefits from MDO. The determination of which spaces in a building are sufficiently different to warrant an independent daylighting analysis is based primarily on building

  18. Validation of the Algorithms Developed for Preliminary Prediction of Daylight Distribution in a Toplighted Atrium

    E-Print Network [OSTI]

    Boubekri, M.; Atif, M. R.; Boyer, L. L.

    1988-01-01T23:59:59.000Z

    VALIDATION OF THE ALGORITHMS DEVELOPED FOR PRELIMINARY PREDICTION OF DAYLIGHT DISTRIBUTION IN A TOPLIGHTED ATRIUM MOHAMED BOUBEKRI MORAD R. ATIF LESTER L. BOYER PhD Candidate PhD Student PhD, Professor Texas A&M University Texas MM University... to understand daylight distribution throughout an atrium space is essential to produce good designs. Simp1 ified daylight prediction algorithms for preliminary design of top1 ighted atriums under overcast and clear diffuse skies have been developed as part...

  19. Intelligent Daylight Panel Control System based on Fuzzy Control for Green Buildings

    E-Print Network [OSTI]

    T. C. Kuo; J. S. Lin; Y. Takeuchi; Y. J. Huang

    Abstract桾his paper proposes an intelligent daylight panel control system based on fuzzy control theory for green buildings. The goal of this research is to automatically modulate sunlight efficiently and to enhance the quality of interior illuminations, thus reducing the need for artificial lighting and conserving energy. Daylight panels are typically installed on the outside of windows. By applying the proposed fuzzy controller, the reflection angle of daylight panels could be adjusted and optimized so that interior illuminative quality is improved and energy-saving is achieved at the same time. Index Termsdaylight panel, intelligent control, fuzzy control. I.

  20. Lighting energy savings potential of split-pane electrochromic windows controlled for daylighting with visual comfort

    E-Print Network [OSTI]

    Fernandes, Luis

    2014-01-01T23:59:59.000Z

    Daylight Coefficients, Lighting Research and Technology,America, 1999, The IESNA lighting handbook: reference andcontrol of electric lighting and blinds, Solar Energy, 77(

  1. Daylighting in schools: Improving student performance and health at a price schools can afford: Preprint

    SciTech Connect (OSTI)

    Plympton, P.; Conway, S.; Epstein, K.

    2000-06-14T23:59:59.000Z

    Over the next seven years, at least 5,000 new schools will be designed and constructed to meet the needs of American students in kindergarten through grade 12. National efforts are underway to encourage the use of daylighting, energy efficiency, and renewable energy technologies in school designs, which can significantly enhance the learning environment. Recent rigorous statistical studies, involving 21,000 students in three states, reveal that students perform better in daylit classrooms and indicate the health benefits of daylighting. This paper discusses the evidence regarding daylighting and student performance and development, and presents four case studies of schools that have cost effectively implemented daylighting into their buildings.

  2. Applicability of daylighting computer modeling in real case studies: Comparison between measured and simulated daylight availability and lighting consumption. Building and Environment

    E-Print Network [OSTI]

    A. D. Atif

    this paper is published in / Une version de ce document se trouve dans : IEA (International Energy Agency) Task 21 / Annex 29: Daylight in Buildings, November 1998, 68 pp. www.nrc.ca/irc/ircpubs NRCC-42862 Subtask C: Daylighting Design Tools T21/C1-21/CAN/98-11 Applicability of Daylighting Computer Modeling in Real Case Studies: Comparison between Measured and Simulated Daylight Availability and Lighting Consumption A report of IEA SHC Task 21 / IEA ECBCS Annex 29 Daylight in Buildings Subtask C: Daylighting Design Tools Report T21/C1-21/CAN/98-11 Applicability of Daylighting Computer Modeling in Real Case Studies: Comparison between Measured and Simulated Daylight Availability and Lighting Consumption by Anca D. Galasiu * Morad R. Atif * A report of IEA SHC Task 21 / IEA ECBCS Annex 29 * National Research Council Canada, Institute for Research in Construction, Indoor Environment Research Program Subtask C: Daylighting Design Tools Report T21/C1-21/CAN/98-11 IEA Solar Heating and Cooling Programme (IEA SHC) The International Energy Agency (IEA) was established in 1974 as an autonomous agency within the framework of the Economic Cooperation and Development (OECD) to carry out a comprehensive program of energy cooperation among its 24 member countries and the Commission of the European Communities. An important part of the Agency's program involves collaboration in the research, development and demonstration of new energy technologies to reduce excessive reliance on imported oil, increase long-term energy security and reduce greenhouse gas emissions. The IEA's R&D activities are headed by the Committee on Energy Research and Technology (CERT) and supported by a small Secretariat staff, headquartered in Paris. In addition, three Working Parties are charged with monitorin...

  3. Study of the relationship between indoor daylight environments and patient average length of stay (ALOS) in healthcare facilities

    E-Print Network [OSTI]

    Choi, Joon Ho

    2007-04-25T23:59:59.000Z

    This study investigates how indoor daylight environments affect patient Average Length of Stay (ALOS), by evaluating and analyzing daylight levels in patient rooms in comparison to their ALOS. The patient ALOS data were taken at one general hospital...

  4. A new approach in data visualization to integrate time and space variability of daylighting in the design process

    E-Print Network [OSTI]

    Yi, Lu, S.M. Massachusetts Institute of Technology

    2008-01-01T23:59:59.000Z

    Daylighting design has great impact on the performance and aesthetical quality of a work of architecture but requires many issues to be addressed during the design process. The way existing daylighting tools deliver data ...

  5. Daylight in fa鏰de renewal : using new metrics to inform the retrofitting of aging modern-ear fa鏰de types

    E-Print Network [OSTI]

    Rice, Edward Oren

    2006-01-01T23:59:59.000Z

    New methods for quantifying daylight are increasingly accessible to designers and planners. While these methods have enabled new building facades to better balance the admission of daylight with the maintenance of thermal ...

  6. Nanolens Window Coatings for Daylighting | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOilNEW HAMPSHIRE BUILDS OFFNanolens Window Coatings for Daylighting

  7. Towards Embedded Wireless-Networked Intelligent Daylighting Systems for Commercial Buildings

    E-Print Network [OSTI]

    Agogino, Alice M.

    Towards Embedded Wireless-Networked Intelligent Daylighting Systems for Commercial Buildings Yao, daylighting systems are not widely used in the commercial office building. Barriers prohibiting adoption) `Smart Dust motes' wireless platforms is explored. Due to their small size, they can be placed directly

  8. Overview Models of the Example Space Renderings using the Architectural Daylighting Tool

    E-Print Network [OSTI]

    Camera B; Joshua Nasman; Barbara Cutler

    Our new TUI for architectural daylighting design allows multiple users to a) gather around a physical sketching environment and select from b) a set of wall primitives and window and material markers to c) build a rough sketch of an architectural design. A d) visualization of a daylighting simulation is projected onto these surfaces.

  9. Walking on daylight : the application of translucent floor systems as a means of achieving natural daylighting in mid and low rise architecture

    E-Print Network [OSTI]

    Widder, James

    1985-01-01T23:59:59.000Z

    This thesis is concerned with the introduction of quality daylight to buildings by means of translucency in the horizontal planes or floors within the building. Since people began to build, the concept of translucency in ...

  10. Color and spectral analysis of daylight in southern Javier Hernandez-Andres, Javier Romero, and Juan L. Nieves

    E-Print Network [OSTI]

    Lee Jr., Raymond L.

    Color and spectral analysis of daylight in southern Europe Javier Herna麓ndez-Andre麓s, Javier Romero We have analyzed the colorimetric and spectral characteristics of 2600 daylight spectra (global), luminous efficacies, and relative UV and IR contents of Granada daylight. The chromaticity coordinates

  11. Dynamic daylight control system implementing thin cast arrays of polydimethylsiloxane-based millimeter-scale transparent louvers

    E-Print Network [OSTI]

    Aizenberg, Joanna

    Dynamic daylight control system implementing thin cast arrays of polydimethylsiloxane: Daylight control system Dynamic window system Energy-efficiency Transparent louvers a b s t r a c in standard office buildings. The development of daylight control systems that maximize the penetration

  12. Building America Case Study: Ground Source Heat Pump Research, TaC Studios Residence, Atlanta, Georigia (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-09-01T23:59:59.000Z

    As part of the NAHB Research Center Industry Partnership, Southface partnered with TaC Studios, an Atlanta based architecture firm specializing in residential and light commercial design, on the construction of a new test home in Atlanta, GA in the mixed-humid climate. This home serves as a residence and home office for the firm's owners, as well as a demonstration of their design approach to potential and current clients. Southface believes the home demonstrates current best practices for the mixed-humid climate, including a building envelope featuring advanced air sealing details and low density spray foam insulation, glazing that exceeds ENERGY STAR requirements, and a high performance heating and cooling system. Construction quality and execution was a high priority for TaC Studios and was ensured by a third party review process. Post construction testing showed that the project met stated goals for envelope performance, an air infiltration rate of 2.15 ACH50. The homeowner's wished to further validate whole house energy savings through the project's involvement with Building America and this long-term monitoring effort. As a Building America test home, this home was evaluated to detail whole house energy use, end use loads, and the efficiency and operation of the ground source heat pump and associated systems. Given that the home includes many non-typical end use loads including a home office, pool, landscape water feature, and other luxury features not accounted for in Building America modeling tools, these end uses were separately monitored to determine their impact on overall energy consumption.

  13. Re: Affordable Textbooks, Fall Semester Update In a message dated 10/28/2010 10:28:50 A.M. Eastern Daylight Time, nicole@studentpirgs.org

    E-Print Network [OSTI]

    Garfunkel, Eric

    .M. Eastern Daylight Time, nicole@studentpirgs.org writes: Hi everyone, There have been some exciting

  14. A CRITICAL REVIEW OF SIMULATION TECHNIQUES FOR DAYLIGHT RESPONSIVE SYSTEMS

    E-Print Network [OSTI]

    L. Doulos; A. Tsangrassoulis; F. Topalis

    * corresponding author Application of lighting control technologies has increased the public interest. Although these technologies have been promoted during the last years their successful use in buildings has been accomplished in a small percentage of new projects. One reason is the difficulty in quantifying the energy savings and thus the subsequent payback period. The majority of existing simulation tools (which are embedded in building energy codes) 杗eeded during initial design- are based on the estimation of the potential energy savings due to daylight. The paper focus on the limitations of current simulation approaches comparing their results, in order to assess their accuracy. For this, special test cases have been developed exploiting their domain of validity.

  15. Energy, Shading and Daylighting Analysis for the Austin Bergstrom International Airport Terminal

    E-Print Network [OSTI]

    Holder, L. M. III; Holder, L. M. IV

    2002-01-01T23:59:59.000Z

    Our firm was under contract with the City of Austin, Texas to perform energy analysis and analysis of the daylighting potential within the New Austin Bergstrom International Airport Terminal. Design of the Passenger Terminal Facility for the New...

  16. Experience of light : the use of an inverse method and a genetic algorithm in daylight design

    E-Print Network [OSTI]

    Chutarat, Acharawan

    2001-01-01T23:59:59.000Z

    Integration of daylight availability in time and architectural space is a critical element in achieving optimal comfort and productivity, as well as in minimizing energy consumption. In recent years, there has been an ...

  17. Time-varied daylighting performance to enable a goal-driven design process

    E-Print Network [OSTI]

    Kleindienst, Si鈔 A. (Si鈔 Alexandra)

    2010-01-01T23:59:59.000Z

    Due to the overwhelming number of decisions to be made during early stage design, there is a need for intuitive methods to communicate data so that it is quickly and easily understood by the designer. In daylighting analysis, ...

  18. A system for optimizing interior daylight distribution using reflective Venetian blinds with independent blind angle control

    E-Print Network [OSTI]

    McGuire, Molly E

    2005-01-01T23:59:59.000Z

    An operational algorithm for blind angle control is developed to optimize the daylighting performance of a system of reflective Venetian blinds. Numerical modeling and experiment confirm that independent control of alternating ...

  19. Form and daylight as a creative medium : Church of John Paul II in South End, Boston

    E-Print Network [OSTI]

    Gruzewski, Jaroslaw

    1992-01-01T23:59:59.000Z

    This thesis is an architectural design project of a Catholic Church dedicated to Pope John Paul II. The main intention of this Thesis is to explore and clearly present daylighting methods and techniques and how important ...

  20. Daylighting techniques used in indigenous buildings in the United Arab Emirates (UAE), an investigative approach

    E-Print Network [OSTI]

    Alnuaimi, Maitha Mohammed

    2009-06-02T23:59:59.000Z

    This study investigated the potential of the daylighting systems used in the indigenous architecture of the United Arab Emirates (UAE), located in Dubai (latitude 25 N longitude 55 E). The analysis tested the lighting performance of three...

  1. Daylighting Design Tools in Atria for Minimum Cooling Loads in Atrium Buildings

    E-Print Network [OSTI]

    Atif, M. R.; Boyer, L. L.; Degelman, L. O.; Claridge, D. E.

    The daylighting and sunlighting value of an atrium are considered the main reasons for including the atrium use in the built environment. However, most atria today are either overlit, which causes tremendous cooling loads, or underlit, requiring...

  2. Daylight Analysis with Microcomputers for School Buildings in a Hot, Humid Climate

    E-Print Network [OSTI]

    Leaver, J.; McQueen, T.

    1987-01-01T23:59:59.000Z

    Daylighting and other passive energy technologies are critical issues that should be considered in the early stages of building planning and architectural design. Both new design and retrofit of existing buildings benefit greatly by use...

  3. An Empirical Study and Analysis of Daylight Penetration Through a Light Plenum

    E-Print Network [OSTI]

    Hill, G. E.; Rowland, D.; Carlson, K.; Karpack, L.

    1985-01-01T23:59:59.000Z

    Lighting accounts for approximately 54% of the annual energy consumption of office buildings, and can effectively be reduced through daylighting. The simplest way to provide day lighting into a typical office space has been to use unilateral...

  4. Daylighting and solar shading performances of an innovative automated reflective louver system

    E-Print Network [OSTI]

    Hashemi, Arman

    2014-08-07T23:59:59.000Z

    follows initial investigations into the design and applicability of an automated retrofitted panel thermal shutters which can also act as a sunshade and daylighting system. The system has a patented function which allows each shutter...

  5. Energy efficient commercial buildings : a study of natural daylighting in the context of adaptive reuse

    E-Print Network [OSTI]

    Crowley, John Stephen

    1982-01-01T23:59:59.000Z

    Daylighting is a powerful design element which can have a dramatic impact on people's perception of space, physical and psychological well-being as well as a building's annual and daily energy requirements. Understanding ...

  6. Impact of Extended Daylight Saving Time on National Energy Consumption Report to Congress

    SciTech Connect (OSTI)

    Belzer, D. B.; Hadley, S. W.; Chin, S-M.

    2008-10-01T23:59:59.000Z

    The Energy Policy Act of 2005 (Pub. L. No. 109-58; EPAct 2005) amended the Uniform Time Act of 1966 (Pub. L. No. 89-387) to increase the portion of the year that is subject to Daylight Saving Time. (15 U.S.C. 260a note) EPAct 2005 extended the duration of Daylight Saving Time in the spring by changing its start date from the first Sunday in April to the second Sunday in March, and in the fall by changing its end date from the last Sunday in October to the first Sunday in November. (15 U.S.C. 260a note) EPAct 2005 also called for the Department of Energy to evaluate the impact of Extended Daylight Saving Time on energy consumption in the United States and to submit a report to Congress. (15 U.S.C. 260a note) This report presents the results of impacts of Extended Daylight Saving Time on the national energy consumption in the United States. The key findings are: (1) The total electricity savings of Extended Daylight Saving Time were about 1.3 Tera Watt-hour (TWh). This corresponds to 0.5 percent per each day of Extended Daylight Saving Time, or 0.03 percent of electricity consumption over the year. In reference, the total 2007 electricity consumption in the United States was 3,900 TWh. (2) In terms of national primary energy consumption, the electricity savings translate to a reduction of 17 Trillion Btu (TBtu) over the spring and fall Extended Daylight Saving Time periods, or roughly 0.02 percent of total U.S. energy consumption during 2007 of 101,000 TBtu. (3) During Extended Daylight Saving Time, electricity savings generally occurred over a three- to five-hour period in the evening with small increases in usage during the early-morning hours. On a daily percentage basis, electricity savings were slightly greater during the March (spring) extension of Extended Daylight Saving Time than the November (fall) extension. On a regional basis, some southern portions of the United States exhibited slightly smaller impacts of Extended Daylight Saving Time on energy savings compared to the northern regions, a result possibly due to a small, offsetting increase in household air conditioning usage. (4) Changes in national traffic volume and motor gasoline consumption for passenger vehicles in 2007 were determined to be statistically insignificant and therefore, could not be attributed to Extended Daylight Saving Time.

  7. An Analysis of Energy Reductions from the Use of Daylighting in Low-Cost Housing

    E-Print Network [OSTI]

    Rungchareonrat, N.

    AN ANALYSIS OF ENERGY REDUCTIONS FROM THE USE OF DAYLIGHTING IN LOW-COST HOUSING A Thesis by NAYARAT RUNGCHAREONRAT Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 2003 Major Subject: Architecture AN ANALYSIS OF ENERGY REDUCTIONS FROM THE USE OF DAYLIGHTING IN LOW-COST HOUSING A Thesis by NAYARAT RUNGCHAREONRAT...

  8. Cooling Energy and Cost Savings with Daylighting in a Hot and Humid Climate

    E-Print Network [OSTI]

    Arasteh, D.; Johnson, R.; Selkowitz, S.; Connell, D.

    1985-01-01T23:59:59.000Z

    (including glazing) was %eld constant at values consistent with ASHRAE 90 standards. Since the thermal conductance of the glazing (single or dou- ble) exceeds the maximum U , as the glass area increases, the conductance 0% the opaque wall is reduced...- ing to a saturation of useful daylight and no sig- nificant further savings in electric lighting energy. This daylight saturation effect begins at effective apertures between 0.10 and 0.25 for typ- ical curtain wall designs in a perimeter zone...

  9. CLIMATE-BASED DAYLIGHT PERFORMANCE: BALANCING VISUAL AND NON-VISUAL ASPECTS OF LIGHT INPUT

    E-Print Network [OSTI]

    M. Andersen; J. Mardaljevic; Nicolas Roy; Jens Christoffersen

    This study uses a domestic dwelling as the setting to investigate and explore the applicability of daylighting metrics for residential buildings, including the formulation of metrics for nonvisual effects. The simulation approach used to generate the performance data from which the metrics are derived is called climate-based daylight modelling (CBDM). This approach delivers predictions of various luminous quantities using sun and sky conditions that are derived from standardised annual meteorological datasets. Although there are uncertainties regarding the precise calibration, there is now sufficient empirical data to parameterise models that also simulate the non-visual aspects of daylight, e.g. for circadian entrainment and a general sense of ?alertness?. For these non-visual aspects, vertical illuminance at the eye was predicted using a modified climate-based daylight modelling approach. In the paper, we consider what relation there might be between the three aspects of daylight provision and if these relations appear to be complementary or conflicting in nature: for task; to reduce electric lighting usage; and, for non-visual effects. The implications for future building guidelines for daylighting are also discussed.

  10. Hydrogeologic Evaluation of a Ground-Source Cooling System at the BSF/CSF on the Battelle Campus: Final Report

    SciTech Connect (OSTI)

    Freedman, Vicky L.; Mackley, Rob D.; Waichler, Scott R.; Horner, Jacob A.; Moon, Thomas W.; Newcomer, Darrell R.; DeSmet, Darrell J.; Lindsey, K. A.; Porcello, J. J.

    2010-05-12T23:59:59.000Z

    This report documents both the field characterization activities and the numerical modeling effort at the BSF/CSF site to determine the viability of an open-loop ground source heat pump (GSHP). The primary purpose of the integrated field and modeling study was to determine far-field impacts related to a non-consumptive use water right for the well field containing four extraction and four injection wells. In the field, boreholes were logged and used to develop the geologic conceptual model. Hydraulic testing was performed to identify hydraulic properties and determine sustainable pumping rates. Estimates of the Ringold hydraulic conductivity (60-150 m/d) at the BSF/CSF site were consistent with the local and regional hydrogeology as well as estimates previously published by other investigators. Sustainable pumping rates at the extraction wells were variable (100 700 gpm), and confirmed field observations of aquifer heterogeneity. Field data were used to develop a numerical model of the site. Simulations assessed the potential of the well field to impact nearby contaminant plumes, neighboring water rights, and the thermal regime of nearby surface water bodies. Using steady-state flow scenarios in conjunction with particle tracking, a radius of influence of 400600 m was identified around the well field. This distance was considerably shorter than the distance to the closest contaminant plume (~1.2 km northwest to the DOE Horn Rapids Landfill) and the nearest water right holder (~1.2 km southeast to the City of Richland Well Field). Results demonstrated that current trajectories for nearby contaminant plumes will not be impacted by the operation of the GSHP well field. The objective of the energy transport analysis was to identify potential thermal impacts to the Columbia River under likely operational scenarios for the BSF/CSF well field. Estimated pumping rates and injection temperatures were used to simulate heat transport for a range of hydraulic conductivity estimates for the Ringold Formation. Two different operational scenarios were simulated using conservative assumptions, such as the absence of river water intrusion in the near shore groundwater. When seasonal injection of warm and cool water occurred, temperature impacts were insignificant at the Columbia River (< +0.2篊), irrespective of the hydraulic conductivity estimate. The second operational scenario simulated continuous heat rejection, a condition anticipated once the BSF/CSF is fully loaded with laboratory and computer equipment. For the continuous heat rejection case, where hourly peak conditions were simulated as month-long peaks, the maximum change in temperature along the shoreline was ~1篊. If this were to be interpreted as an absolute change in a static river temperature, it could be considered significant. However, the warmer-than-ambient groundwater flux that would potentially discharge to the Columbia River is very small relative to the flow in the river. For temperatures greater than 17.0篊, the flow relative to a low-flow condition in the river is only 0.012%. Moreover, field data has shown that diurnal fluctuations in temperature are as high as 5篊 along the shoreline.

  11. Measured Performance and Analysis of Ground Source Heat Pumps for Space Conditioning and for Water Heating in a Low-Energy Test House Operated under Simulated Occupancy Conditions

    SciTech Connect (OSTI)

    Ally, Moonis Raza [ORNL] [ORNL; Munk, Jeffrey D [ORNL] [ORNL; Baxter, Van D [ORNL] [ORNL; Gehl, Anthony C [ORNL] [ORNL

    2012-01-01T23:59:59.000Z

    In this paper we present measured performance and efficiency metrics of Ground Source Heat Pumps (GSHPs) for space conditioning and for water heating connected to a horizontal ground heat exchanger (GHX) loop. The units were installed in a 345m2 (3700ft2) high-efficiency test house built with structural insulated panels (SIPs), operated under simulated occupancy conditions, and located in Oak Ridge, Tennessee (USA) in US Climate Zone 4 . The paper describes distinctive features of the building envelope, ground loop, and equipment, and provides detailed monthly performance of the GSHP system. Space conditioning needs of the house were completely satisfied by a nominal 2-ton (7.0 kW) water-to-air GSHP (WA-GSHP) unit with almost no auxiliary heat usage. Recommendations for further improvement through engineering design changes are identified. The comprehensive set of data and analyses demonstrate the feasibility and practicality of GSHPs in residential applications and their potential to help achieve source energy and greenhouse gas emission reduction targets set under the IECC 2012 Standard.

  12. International Workshop on Geomechanics and Energy The Ground as Energy Source and Storage Lausanne, Switzerland, 26-28 November 2013

    E-Print Network [OSTI]

    Candea, George

    in the ground from other technologies, such as solar panels, will lead to higher temperature variations. Soils, and eventually its response, depending on the type of soil. The main consequence of the thermal volume variation by the different authors for a wide range of different clayey materials containing variable quantities of illite

  13. Distinguishing barriers and asperities in near-source ground motion Morgan T. Page, Eric M. Dunham,1

    E-Print Network [OSTI]

    Carlson, Jean

    process. Numerous kinematic inversions of wave- form data indicate that earthquake ruptures follow complex with equivalent stress drops. This suggests that kinematic models with such constraints overestimate the actual aspects of ground motion in the context of simple but heterogeneous ruptures. [3] Kinematic inversions

  14. Assessing the Feasibility of Creek Daylighting in San Francisco, Part II: A Preliminary Analysis of Yosemite Creek

    E-Print Network [OSTI]

    Smith, Brooke Ray

    2007-01-01T23:59:59.000Z

    Lucas. 2006. Islais Creek reinterpreted: An exploration ofwould be triggered? If the creek conveys stormwater runoff,2004. Daylighting Islais Creek: a feasibility study.

  15. Performance of Integrated Systems of Automated Roller Shade Systems and Daylight Responsive Dimming Systems

    SciTech Connect (OSTI)

    Park, Byoung-Chul; Choi, An-Seop; Jeong, Jae-Weon; Lee, Eleanor S.

    2010-07-08T23:59:59.000Z

    Daylight responsive dimming systems have been used in few buildings to date because they require improvements to improve reliability. The key underlying factor contributing to poor performance is the variability of the ratio of the photosensor signal to daylight workplane illuminance in accordance with sun position, sky condition, and fenestration condition. Therefore, this paper describes the integrated systems between automated roller shade systems and daylight responsive dimming systems with an improved closed-loop proportional control algorithm, and the relative performance of the integrated systems and single systems. The concept of the improved closed-loop proportional control algorithm for the integrated systems is to predict the varying correlation of photosensor signal to daylight workplane illuminance according to roller shade height and sky conditions for improvement of the system accuracy. In this study, the performance of the integrated systems with two improved closed-loop proportional control algorithms was compared with that of the current (modified) closed-loop proportional control algorithm. In the results, the average maintenance percentage and the average discrepancies of the target illuminance, as well as the average time under 90percent of target illuminance for the integrated systems significantly improved in comparison with the current closed-loop proportional control algorithm for daylight responsive dimming systems as a single system.

  16. Effectiveness of External Window Attachments Based on Daylight Utilization and Cooling Load Reduction for Small Office Buildings in Hot Humid Climates

    E-Print Network [OSTI]

    Soebarto, V. I.; Degelman, L. O.

    1994-01-01T23:59:59.000Z

    reduce the amount of the daylight needed to supplement interior lighting. Therefore the objective of this study was to explore which strategy would give a balance between solar heat gain reduction and daylight utilization and result in the most energy...

  17. CITI Program Website Downtime for Software Upgrade Starting Monday 29 July at 11 a.m. U.S. Eastern Daylight Time, the CITI Program website will be

    E-Print Network [OSTI]

    .S. Eastern Daylight Time, the CITI Program website will be unavailable for approximately two to three days

  18. BUILDING RESEARCH & INFORMATION (2008) Paper in press (mock proof) expected to appear in Vol 36 No 6 (Nov 2008) An intuitive daylighting performance

    E-Print Network [OSTI]

    Varela, Carlos

    No 6 (Nov 2008) An intuitive daylighting performance analysis and optimization approach M. Andersen1 of daylighting considerations into the design process requires many issues to be addressed simultaneously quantitative and qualitative performance criteria using daylighting analysis data in various forms

  19. CLTC is a not-for-profit research, development and demonstration facility leading innovations in energy-efficient lighting and daylighting technologies.

    E-Print Network [OSTI]

    California at Davis, University of

    in energy-efficient lighting and daylighting technologies. Collaborating with partners in government common ways CLTC utilizes funding to advance the science of energy-efficient lighting and daylighting and field test emerging lighting and daylighting technologies. Demonstrations help vet the performance

  20. 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

  1. Exergy Analysis and Operational Efficiency of a Horizontal Ground Source Heat Pump System Operated in a Low-Energy Test House under Simulated Occupancy Conditions

    SciTech Connect (OSTI)

    Ally, Moonis Raza [ORNL; Baxter, Van D [ORNL; Munk, Jeffrey D [ORNL; Gehl, Anthony C [ORNL

    2012-01-01T23:59:59.000Z

    This paper presents data, analyses, measures of performance, and conclusions for a ground-source heat pump (GSHP) providing space conditioning to a 345m2 house whose envelope is made of structural insulated panels (SIP). The entire thermal load of this SIP house with RSI-3.7 (RUS-21) walls, triple pane windows with a U-factor of 1.64 W/m2 K (0.29 Btu/h ft2 oF) and solar heat gain coefficient (SHGC) of 0.25, a roof assembly with overall thermal resistance of about RSI-8.8 (RUS-50) and low leakage rates of 0.74 ACH at 50Pa was satisfied with a 2.16-Ton (7.56 kW) GSHP unit consuming negligible (9.83kWh) auxiliary heat during peak winter season. The highest and lowest heating COP achieved was 4.90 (October) and 3.44 (February), respectively. The highest and lowest cooling COP achieved was 6.09 (April) and 3.88 (August). These COPs are calculated on the basis of the total power input (including duct, ground loop, and control power losses ). The second Law (Exergy) analysis provides deep insight into how systemic inefficiencies are distributed among the various GSHP components. Opportunities for design and further performance improvements are identified. Through Exergy analysis we provide a true measure of how closely actual performance approaches the ideal, and it unequivocally identifies, better than energy analysis does, the sources and causes of lost work, the root cause of system inefficiencies.

  2. Pre-Shot Simulations of Far-Field Ground Motions for the Source Physics Experiment (SPE) Explosions at the Climax Stock, Nevada National Security Site

    SciTech Connect (OSTI)

    Rodgers, A J; Wagoner, J; Petersson, N A; Sjogreen, B

    2010-11-07T23:59:59.000Z

    The Source Physics Experiment (SPE) will involve a series of explosions in various geologic and emplacement conditions to validate numerical simulation methods to predict behavior of seismic wave excitation and propagation for nuclear test monitoring. The first SPE's currently underway involve explosions in the Climax Stock (granitic geology) at the Nevada National Security Site (NNSS). Detailed geologic data and published material properties for the major lithologic units of the NNSS and surrounding region were used to build three-dimensional models for seismic wave propagation simulations. The geologic structure near the SPE shot point is quite varied including granitic, carbonate, tuff and alluvium lithologies. We performed preliminary ground motion simulations for a near-source domain covering 8 km x 8 km at the surface centered on the shot point to investigate various source and propagation effects using WPP, LLNL's anelastic seismic wave finite difference code. Simulations indicate that variations in wave propagation properties of the sub-surface will generate strongly path-dependent response once the energy has left the relatively small granitic geology of the near-surface Climax Stock near the SPE shot point. Rough topography to the north and west of SPE shot point causes additional complexity in the signals including energy on the transverse components. Waves propagate much faster through the granitic and carbonate formations and slower through the tuff and alluvium. Synthetic seismograms for a pure explosion source in a 3D geologic structure show large amplitudes on transverse component. For paths to the south sampling the granite, tuff and alluvium lithologies transverse component amplitudes are as high as 50% of that on the vertical and radial components.

  3. Impact of Fixed Exterior Shading on Daylighting: A Case Study of the David Brower Center

    E-Print Network [OSTI]

    Zelenay, Krystyna

    2011-01-01T23:59:59.000Z

    blind systems were always lowered and seasonally adjusted (continued on next page) MS Thesis,Thesis, Dept. of Architecture, UC Berkeley 2011 http://escholarship.org/uc/item/1mq5k9mw blinds,blinds frequently enough to take advantage of daylighting. 14 While MS Thesis,

  4. DOES DAYLIGHT SAVING TIME SAVE ENERGY? EVIDENCE FROM A NATURAL EXPERIMENT IN INDIANA

    E-Print Network [OSTI]

    Kotchen, Matthew J.

    electricity bills. We also estimate social costs of increased pollution emissions between $1.7 to $5.5 million implemented a DST policy, with the aim of reducing demand for electrical lighting to free up more coal to estimate the effect of daylight saving time (DST) on residential electricity consumption. Our main finding

  5. Evaluation of Lightshelf Daylighting Systems for Office Buildings in Hot Climates

    E-Print Network [OSTI]

    Abdulmohsen, A.; Boyer, L. L.; Degelman, L. O.

    1994-01-01T23:59:59.000Z

    and heat by shading view apertures below the shelf to reduce solar heat gain and glare and by reflecting light deep into the space through the daylight aperture above the shelf. It also investigates how to provide view with good interior lighting in terms...

  6. Monitored Energy Performance of Electrochromic Windows Controlledfor Daylight and Visual Comfort

    SciTech Connect (OSTI)

    Lee, Eleanor S.; DiBartolomeo, Dennis L.; Klems, Joseph; Yazdanian, Mehry; Selkowitz, Stephen E.

    2005-09-23T23:59:59.000Z

    A 20-month field study was conducted to measure the energy performance of south-facing large-area tungsten-oxide absorptive electrochromic (EC) windows with a broad switching range in a private office setting. The EC windows were controlled by a variety of means to bring in daylight while minimizing window glare. For some cases, a Venetian blind was coupled with the EC window to block direct sun. Some tests also involved dividing the EC window wall into zones where the upper EC zone was controlled to admit daylight while the lower zone was controlled to prevent glare yet permit view. If visual comfort requirements are addressed by EC control and Venetian blinds, a 2-zone EC window configuration provided average daily lighting energy savings of 10 {+-} 15% compared to the reference case with fully lowered Venetian blinds. Cooling load reductions were 0 {+-} 3%. If the reference case assumes no daylighting controls, lighting energy savings would be 44 {+-} 11%. Peak demand reductions due to window cooling load, given a critical demand-response mode, were 19-26% maximum on clear sunny days. Peak demand reductions in lighting energy use were 0% or 72-100% compared to a reference case with and without daylighting controls, respectively. Lighting energy use was found to be very sensitive to how glare and sun is controlled. Additional research should be conducted to fine-tune EC control for visual comfort based on solar conditions so as to increase lighting energy savings.

  7. Invited paper for the 2001 IESNA National Conference Daylighting, Dimming, and the Electricity Crisis in California

    E-Print Network [OSTI]

    building peak electric loads. During times of energy shortage, there is a greatly increased need to reduce the operating costs of buildings. The paper presents a typical commercial building electric demand profile during summer, and shows how daylighting-linked lighting controls and load shedding techniques can reduce

  8. D i i f S t i bilit i th B ilt E i tDesigning for Sustainability in the Built Environment Exterior Facade Design for Maximum Daylighting and Solar Power

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Facade Design for Maximum Daylighting and Solar Power GenerationGeneration A frank assessment of issues "...the art and science of daylighting is not so much about how to provide enough daylighting as how to do LIGHTING CHARACTER DUE TO DAYLIGHT VARIABILITY 路 PSYCHOLOGICAL BENEFITS OF路 PSYCHOLOGICAL BENEFITS

  9. Pre-shot simulations of far-field ground motion for the Source Physics Experiment (SPE) Explosions at the Climax Stock, Nevada National Security Site: SPE2

    SciTech Connect (OSTI)

    Mellors, R J; Rodgers, A; Walter, W; Ford, S; Xu, H; Matzel, E; Myers, S; Petersson, N A; Sjogreen, B; Hauk, T; Wagoner, J

    2011-10-18T23:59:59.000Z

    The Source Physics Experiment (SPE) is planning a 1000 kg (TNT equivalent) shot (SPE2) at the Nevada National Security Site (NNSS) in a granite borehole at a depth (canister centroid) of 45 meters. This shot follows an earlier shot of 100 kg in the same borehole at a depth 60 m. Surrounding the shotpoint is an extensive array of seismic sensors arrayed in 5 radial lines extending out 2 km to the north and east and approximately 10-15 to the south and west. Prior to SPE1, simulations using a finite difference code and a 3D numerical model based on the geologic setting were conducted, which predicted higher amplitudes to the south and east in the alluvium of Yucca Flat along with significant energy on the transverse components caused by scattering within the 3D volume along with some contribution by topographic scattering. Observations from the SPE1 shot largely confirmed these predictions although the ratio of transverse energy relative to the vertical and radial components was in general larger than predicted. A new set of simulations has been conducted for the upcoming SPE2 shot. These include improvements to the velocity model based on SPE1 observations as well as new capabilities added to the simulation code. The most significant is the addition of a new source model within the finite difference code by using the predicted ground velocities from a hydrodynamic code (GEODYN) as driving condition on the boundaries of a cube embedded within WPP which provides a more sophisticated source modeling capability linked directly to source site materials (e.g. granite) and type and size of source. Two sets of SPE2 simulations are conducted, one with a GEODYN source and 3D complex media (no topography node spacing of 5 m) and one with a standard isotropic pre-defined time function (3D complex media with topography, node spacing of 5 m). Results were provided as time series at specific points corresponding to sensor locations for both translational (x,y,z) and rotational components. Estimates of spectral scaling for SPE2 are provided using a modified version of the Mueller-Murphy model. An estimate of expected aftershock probabilities were also provided, based on the methodology of Ford and Walter, [2010].

  10. SOURCE?

    Energy Savers [EERE]

    Department of Energy (DOE) in partnership with Lawrence Berkeley National Laboratory (LBNL), is an open-source code package designed to be a common, low-cost, standardized tool...

  11. Space, light, and time : prospective analysis of Circadian illumination for health-based daylighting with applications to healthcare architecture

    E-Print Network [OSTI]

    Pechacek, Christopher S. (Christopher Scott)

    2008-01-01T23:59:59.000Z

    Light in architecture can be studied for its objective or perceptual effects. This thesis describes an objective link between human health and architectural design. Specifically, the link between daylight and human circadian ...

  12. Acceleration of the matrix multiplication of Radiance three phase daylighting simulations with parallel computing on heterogeneous hardware of personal computer

    SciTech Connect (OSTI)

    University of Miami; Zuo, Wangda; McNeil, Andrew; Wetter, Michael; Lee, Eleanor S.

    2013-04-30T23:59:59.000Z

    Building designers are increasingly relying on complex fenestration systems to reduce energy consumed for lighting and HVAC in low energy buildings. Radiance, a lighting simulation program, has been used to conduct daylighting simulations for complex fenestration systems. Depending on the configurations, the simulation can take hours or even days using a personal computer. This paper describes how to accelerate the matrix multiplication portion of a Radiance three-phase daylight simulation by conducting parallel computing on heterogeneous hardware of a personal computer. The algorithm was optimized and the computational part was implemented in parallel using OpenCL. The speed of new approach was evaluated using various daylighting simulation cases on a multicore central processing unit and a graphics processing unit. Based on the measurements and analysis of the time usage for the Radiance daylighting simulation, further speedups can be achieved by using fast I/O devices and storing the data in a binary format.

  13. To be submitted to Solar Energy. Daylight performance of a microstructured prismatic window film in deep open

    E-Print Network [OSTI]

    To be submitted to Solar Energy. Daylight performance of a microstructured prismatic window film Systems Department, Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory with vertical windows have the potential to offset lighting energy use in deep perimeter zones

  14. Origins of Analysis Methods Used to Design High Performance Commercial Buildings: Part III, Lighting and Daylighting Simulation

    E-Print Network [OSTI]

    Oh, S.; Haberl, J.S.

    Origins of analysis methods used to design high performance commercial buildings: Part III, Lighting and daylighting simulation Sukjoon Oh Jeff S. Haberl Student Member ASHRAE Fellow ASHRAE This study is the third part of the review... methods used in lighting and daylighting simulation programs are described. In companion papers, the origins of the analysis methods of whole-building energy and solar energy analysis programs are reviewed(Oh and Haberl 2014a, 2014b). Introduction...

  15. Practical free-space quantum key distribution over 10 km in daylight and at night

    E-Print Network [OSTI]

    Richard J. Hughes; Jane E. Nordholt; Derek Derkacs; Charles G. Peterson

    2002-06-14T23:59:59.000Z

    We have demonstrated quantum key distribution (QKD) over a 10-km, 1-airmass atmospheric range during daylight and at night. Secret random bit sequences of the quality required for the cryptographic keys used to initialize secure communications devices were transferred at practical rates with realistic security. By identifying the physical parameters that determine the system's secrecy efficiency, we infer that free-space QKD will be practical over much longer ranges under these and other atmospheric and instrumental conditions.

  16. Minimizing lighting power density in office rooms equipped with Anidolic Daylighting Systems

    SciTech Connect (OSTI)

    Linhart, Friedrich; Scartezzini, Jean-Louis [Solar Energy and Building Physics Laboratory (LESO-PB), Ecole Polytechnique Federale de Lausanne (EPFL), 1015 Lausanne (Switzerland)

    2010-04-15T23:59:59.000Z

    Electric lighting is responsible for up to one third of an office building's electricity needs. Making daylight more available in office buildings can not only contribute to significant energy savings but also enhance the occupants' performance and wellbeing. Anidolic Daylighting Systems (ADS) are one type of very effective facade-integrated daylighting systems. All south-facing office rooms within the LESO solar experimental building in Lausanne (Switzerland) are equipped with a given type of ADS. A recent study has shown that these offices' occupants are highly satisfied with their lighting environment. The most energy-efficient south-facing offices have a lighting power density of less than 5W/m{sup 2}. The lighting situation within these ''best practice''-offices has been assessed using the lighting simulation software RELUX Vision. Because this lighting situation is very much appreciated by the occupants, it was used as a starting point for developing even more energy-efficient office lighting designs. Two new lighting designs, leading to lighting power densities of 3.9W/m{sup 2} and 3W/m{sup 2}, respectively, have been suggested and simulated with RELUX Vision. Simulation results have shown that the expected performances of these new systems are comparable to that of the current lighting installation within the ''best practice''-offices or even better. These simulation results have been confirmed during experiments on 20 human subjects in a test office room recently set up within the LESO building. This article gives engineers, architects and light planers valuable information and ideas on how to design energy-efficient and comfortable electric lighting systems in office rooms with abundant access to daylight. (author)

  17. Ground Water Ground Sky Sky Water Vegetation Ground Vegetation Water

    E-Print Network [OSTI]

    Chen, Tsuhan

    Bear Snow Vegetation RhinoWater Vegetation Ground Water Ground Sky Sky Rhino Water Vegetation Ground Vegetation Water Rhino Water Vegetation Ground Rhino Water Rhino Water Ground Ground Vegetation Water Rhino Vegetation Rhino Vegetation Ground Rhino Vegetation Ground Sky Rhino Vegetation Ground Sky

  18. On the Use of Integrated Daylighting and Energy Simulations to Drive the Design of a Large Net-Zero Energy Office Building: Preprint

    SciTech Connect (OSTI)

    Guglielmetti, R.; Pless, S.; Torcellini, P.

    2010-08-01T23:59:59.000Z

    This paper illustrates the challenges of integrating rigorous daylight and electric lighting simulation data with whole-building energy models, and defends the need for such integration to achieve aggressive energy savings. Through a case study example, we examine the ways daylighting -- and daylighting simulation -- drove the design of a large net-zero energy project. We give a detailed review of the daylighting and electric lighting design process for the National Renewable Energy Laboratory's Research Support Facility (RSF), a 220,000 ft2 net-zero energy project the author worked on as a daylighting consultant. A review of the issues involved in simulating and validating the daylighting performance of the RSF will be detailed, including daylighting simulation, electric lighting control response, and integration of Radiance simulation data into the building energy model. Daylighting was a key strategy in reaching the contractual energy use goals for the RSF project; the building's program, layout, orientation and interior/furniture design were all influenced by the daylighting design, and simulation was critical in ensuring these many design components worked together in an integrated fashion, and would perform as required to meet a very aggressive energy performance goal, as expressed in a target energy use intensity.

  19. Measurements of volatile organic compounds at a suburban ground site (T1) in Mexico City during the MILAGRO 2006 campaign: Measurement comparison, emission ratios, and source attribution

    SciTech Connect (OSTI)

    Bon, D.M.; Springston, S.; M.Ulbrich, I.; de Gouw, J. A.; Warneke, C.; Kuster, W. C.; Alexander, M. L.; Baker, A.; Beyersdorf, A. J.; Blake, D.; Fall, R.; Jimenez, J. L., Herndon, S. C.; Huey, L. G.; Knighton, W. B.; Ortega, J.; Vargas, O.

    2011-03-16T23:59:59.000Z

    Volatile organic compound (VOC) mixing ratios were measured with two different instruments at the T1 ground site in Mexico City during the Megacity Initiative: Local and Global Research Observations (MILAGRO) campaign in March of 2006. A gas chromatograph with flame ionization detector (GC-FID) quantified 18 light alkanes, alkenes and acetylene while a proton-transfer-reaction ion-trap mass spectrometer (PIT-MS) quantified 12 VOC species including oxygenated VOCs (OVOCs) and aromatics. A GC separation system was used in conjunction with the PIT-MS (GC-PIT-MS) to evaluate PIT-MS measurements and to aid in the identification of unknown VOCs. The VOC measurements are also compared to simultaneous canister samples and to two independent proton-transfer-reaction mass spectrometers (PTR-MS) deployed on a mobile and an airborne platform during MILAGRO. VOC diurnal cycles demonstrate the large influence of vehicle traffic and liquid propane gas (LPG) emissions during the night and photochemical processing during the afternoon. Emission ratios for VOCs and OVOCs relative to CO are derived from early-morning measurements. Average emission ratios for non-oxygenated species relative to CO are on average a factor of {approx}2 higher than measured for US cities. Emission ratios for OVOCs are estimated and compared to literature values the northeastern US and to tunnel studies in California. Positive matrix factorization analysis (PMF) is used to provide insight into VOC sources and processing. Three PMF factors were distinguished by the analysis including the emissions from vehicles, the use of liquid propane gas and the production of secondary VOCs + long-lived species. Emission ratios to CO calculated from the results of PMF analysis are compared to emission ratios calculated directly from measurements. The total PIT-MS signal is summed to estimate the fraction of identified versus unidentified VOC species.

  20. Simulating the Daylight Performance of Complex Fenestration Systems Using Bidirectional Scattering Distribution Functions within Radiance

    SciTech Connect (OSTI)

    Ward, Gregory; Mistrick, Ph.D., Richard; Lee, Eleanor; McNeil, Andrew; Jonsson, Ph.D., Jacob

    2011-01-21T23:59:59.000Z

    We describe two methods which rely on bidirectional scattering distribution functions (BSDFs) to model the daylighting performance of complex fenestration systems (CFS), enabling greater flexibility and accuracy in evaluating arbitrary assemblies of glazing, shading, and other optically-complex coplanar window systems. Two tools within Radiance enable a) efficient annual performance evaluations of CFS, and b) accurate renderings of CFS despite the loss of spatial resolution associated with low-resolution BSDF datasets for inhomogeneous systems. Validation, accuracy, and limitations of the methods are discussed.

  1. Key word:Daylight Factor Window Wall Ratio Pendentive dome Lighting design Tropical region Architecture and Interior design

    E-Print Network [OSTI]

    Mehrdad Mazloomi

    Abstract: Daylighting design plays important role in architecture of religious buildings such as churches and mosques where pendentive dome construction is frequently used. In daylighting design, many designers face difficulty in estimating the interior share of light which is usually expressed by daylight factor due to complexity of interior form. This study aims to provide designers with a rather high precision rule of thumb for average daylight factor in pendentive dome building. Thus, it investigates the Daylight Factor [DF] distribution of such buildings with reference to the tropics. It takes the Window Wall Ratio [WWR] into account and seeks its influence on daylight factor. By a 12 X 12 points grid, it examines five different ratios including 0.1, 0.2, 0.3, 0.4 and 0.5 on DF of the floor beneath the dome. The results endorse the direct relation of WWR and DF. The least WWR equal to 0.1 yields an average DF of 0.55 % while the greatest WWR of 0.5 yields in average DF of 2.56%. The intermediate WWR in steps of 0.2, 0.3 and 0.4 correspond to 1.04, 1.56 and 2.07 percent respectively. As a relatively precise rule of thumb, any increment in consequent steps of WWR with 0.1 intervals results in 0.5 % increase in DF. This can be employed by architects and interior designers for lighting design of pendentive dome buildings in tropical region.

  2. Empirical assessment of a prismatic daylight-redirecting window film in a full-scale office testbed

    SciTech Connect (OSTI)

    Thanachareonkit, Anothai; Lee, Eleanor S.; McNeil, Andrew

    2013-08-31T23:59:59.000Z

    Daylight redirecting systems with vertical windows have the potential to offset lighting energy use in deep perimeter zones. Microstructured prismatic window films can be manufactured using low-cost, roll-to-roll fabrication methods and adhered to the inside surface of existing windows as a retrofit measure or installed as a replacement insulating glass unit in the clerestory portion of the window wall. A clear film patterned with linear, 50-250 micrometer high, four-sided asymmetrical prisms was fabricated and installed in the south-facing, clerestory low-e, clear glazed windows of a full-scale testbed facility. Views through the film were distorted. The film was evaluated in a sunny climate over a two-year period to gauge daylighting and visual comfort performance. The daylighting aperture was small (window-towall ratio of 0.18) and the lower windows were blocked off to isolate the evaluation to the window film. Workplane illuminance measurements were made in the 4.6 m (15 ft) deep room furnished as a private office. Analysis of discomfort glare was conducted using high dynamic range imaging coupled with the evalglare software tool, which computes the daylight glare probability and other metrics used to evaluate visual discomfort. The window film was found to result in perceptible levels of discomfort glare on clear sunny days from the most conservative view point in the rear of the room looking toward the window. Daylight illuminance levels at the rear of the room were significantly increased above the reference window condition, which was defined as the same glazed clerestory window but with an interior Venetian blind (slat angle set to the cut-off angle), for the equinox to winter solstice period on clear sunny days. For partly cloudy and overcast sky conditions, daylight levels were improved slightly. To reduce glare, the daylighting film was coupled with a diffusing film in an insulating glazing unit. The diffusing film retained the directionality of the redirected light spreading it within a small range of outgoing angles. This solution was found to reduce glare to imperceptible levels while retaining for the most part the illuminance levels achieved solely by the daylighting film.

  3. Daylighting design analysis. Project status report No. 2, 1 March-31 December 1980. [For pre-engineered metal buildings

    SciTech Connect (OSTI)

    Hallagan, W.B.; Lindsey, L.L.; Snyder, M.K.

    1980-01-01T23:59:59.000Z

    Detailed scale model studies regarding daylighting aspects of the passive/hybrid solar test building located at Butler Research Center in Grandview, MO are discussed. The product development program is aimed at providing passive/hybrid system building alternatives for commercial, industrial, and community purchasers of Butler's Landmark pre-engineered metal buildings. Occasioned by recognition, early in the project, that daylighting could strongly influence annual energy consumption in buildings of the targetted use types, scale models of several alternative design configurations, including that of the test building in Grandview, were built and tested. The major design alternatives, test results, and conclusions to date are described.

  4. An experimental setup to evaluate the daylighting performance of an advanced optical light pipe for deep-plan office buildings

    E-Print Network [OSTI]

    Martins Mogo de Nadal, Betina Gisela

    2005-11-01T23:59:59.000Z

    This research focuses on an advanced optical light pipe daylighting system as a means to deliver natural light at the back of deep-plan office buildings (15ft to 30ft), using optimized geometry and high reflective materials. The light pipe...

  5. 2003: Energy performance of daylight-linked automatic lighting control systems in large atrium spaces: report on two field-monitored case studies

    E-Print Network [OSTI]

    M. R. Galasiu; Morad R. Atif; Anca D. Galasiu

    This paper presents the field-measured energy performance of two common types of daylight-linked lighting control systems, continuous dimming and automatic on/off installed in two existing large atrium spaces located in Canada. The daylighting performance was evaluated based on the daylight contribution to the indoor illuminance and the amount of electrical lighting displaced by daylighting via the daylight-linked lighting control systems. Measured daylighting contribution to the space indicates that significant lighting energy savings can be achieved in atrium spaces if the daylight-linked lighting control system is appropriately selected, installed and commissioned throughout its existence. Results extrapolated from measurements collected during summer and winter indicate that as installed, the continuous dimming lighting control system provides 46% annual savings in electrical lighting consumption, while the automatic on/off saves between 11-17% in lighting energy. These savings account for 68% of the lighting energy consumed during main occupancy for the continuous dimming system, and 31.5% for the automatic on/off. Operation irregularities such as a reduced dimming linearity and an incorrect adjustment of the phases of the dimming control system, as well as the inadequate location of the photocell controlling the automatic on/off lighting system, the improper maintenance of the skylight during winter and the oversizing of the lighting system reduced the energy efficiency of the lighting control systems by 30-65%.

  6. The use of daylight in the design of a controlled environment for food production in the Caribbean and other equatorial climates

    E-Print Network [OSTI]

    Charles, Curtis B

    1989-01-01T23:59:59.000Z

    This thesis addresses the use of daylight in the design of a controlled environment for food production in the Caribbean and other Equatorial climates. An expanding population has put a tremendous burden on the food ...

  7. Field and Laboratory Study of a Ground-Coupled Water Source Heat Pump with an Integral Enthalpy Exchange System for Classrooms

    E-Print Network [OSTI]

    Domitrovic, R.; Hayzen, G. J.; Johnson, W. S.; Chen, F. C.

    2002-01-01T23:59:59.000Z

    water-source heat pump, coupled with a geothermal water loop and incorporating a forced fresh-air enthalpy exchange system was installed in a typical middle school classroom in Oak Ridge, Tennessee. This project is a joint effort among Oak Ridge School...

  8. Roof aperture system for selective collection and control of solar energy for building heating, cooling and daylighting

    DOE Patents [OSTI]

    Sanders, William J. (Kansas City, KS); Snyder, Marvin K. (Overland Park, KS); Harter, James W. (Independence, MO)

    1983-01-01T23:59:59.000Z

    The amount of building heating, cooling and daylighting is controlled by at least one pair of solar energy passing panels, with each panel of the pair of panels being exposed to a separate direction of sun incidence. A shutter-shade combination is associated with each pair of panels and the shutter is connected to the shade so that rectilinear movement of the shutter causes pivotal movement of the shade.

  9. Energy Use Intensity and its Influence on the Integrated Daylighting Design of a Large Net Zero Energy Building: Preprint

    SciTech Connect (OSTI)

    Guglielmetti , R.; Scheib, J.; Pless, S. D.; Torcellini , P.; Petro, R.

    2011-03-01T23:59:59.000Z

    Net-zero energy buildings generate as much energy as they consume and are significant in the sustainable future of building design and construction. The role of daylighting (and its simulation) in the design process becomes critical. In this paper we present the process the National Renewable Energy Laboratory embarked on in the procurement, design, and construction of its newest building, the Research Support Facility (RSF) - particularly the roles of daylighting, electric lighting, and simulation. With a rapid construction schedule, the procurement, design, and construction had to be tightly integrated; with low energy use. We outline the process and measures required to manage a building design that could expect to operate at an efficiency previously unheard of for a building of this type, size, and density. Rigorous simulation of the daylighting and the electric lighting control response was a given, but the oft-ignored disconnect between lighting simulation and whole-building energy use simulation had to be addressed. The RSF project will be thoroughly evaluated for its performance for one year; preliminary data from the postoccupancy monitoring efforts will also be presented with an eye toward the current efficacy of building energy and lighting simulation.

  10. Evaluation of Analytical and Numerical Techniques for Defining the Radius of Influence for an Open-Loop Ground Source Heat Pump System

    SciTech Connect (OSTI)

    Freedman, Vicky L.; Mackley, Rob D.; Waichler, Scott R.; Horner, Jacob A.

    2013-09-26T23:59:59.000Z

    In an open-loop groundwater heat pump (GHP) system, groundwater is extracted, run through a heat exchanger, and injected back into the ground, resulting in no mass balance changes to the flow system. Although the groundwater use is non-consumptive, the withdrawal and injection of groundwater may cause negative hydraulic and thermal impacts to the flow system. Because GHP is a relatively new technology and regulatory guidelines for determining environmental impacts for GHPs may not exist, consumptive use metrics may need to be used for permit applications. For consumptive use permits, a radius of influence is often used, which is defined as the radius beyond which hydraulic impacts to the system are considered negligible. In this paper, the hydraulic radius of influence concept was examined using analytical and numerical methods for a non-consumptive GHP system in southeastern Washington State. At this location, the primary hydraulic concerns were impacts to nearby contaminant plumes and a water supply well field. The results of this study showed that the analytical techniques with idealized radial flow were generally unsuited because they over predicted the influence of the well system. The numerical techniques yielded more reasonable results because they could account for aquifer heterogeneities and flow boundaries. In particular, the use of a capture zone analysis was identified as the best method for determining potential changes in current contaminant plume trajectories. The capture zone analysis is a more quantitative and reliable tool for determining the radius of influence with a greater accuracy and better insight for a non-consumptive GHP assessment.

  11. Factors controlling tungsten concentrations in ground water, Carson Desert, Nevada

    E-Print Network [OSTI]

    Factors controlling tungsten concentrations in ground water, Carson Desert, Nevada Ralph L. Seiler sources. Tungsten concentrations in 100 ground water samples from all aquifers used as drinking water indicates that W exhibits Tungsten con- centrations are strongly and positively correlated

  12. Ground Loops for Heat Pumps and Refrigeration

    E-Print Network [OSTI]

    Braud, H. J.

    1986-01-01T23:59:59.000Z

    Ground loops are used for water source heat pumps. Refrigeration can be put on a ground loop. Water-cooled condensing units are more efficient than air-cooled, and they can be put indoors. Indoor location makes piping for desuperheater hot water...

  13. Ground Loops for Heat Pumps and Refrigeration

    E-Print Network [OSTI]

    Braud, H. J.

    1986-01-01T23:59:59.000Z

    Ground loops are used for water source heat pumps. Refrigeration can be put on a ground loop. Water-cooled condensing units are more efficient than air-cooled, and they can be put indoors. Indoor location makes piping for desuperheater hot water...

  14. Comparative Study of summer, Winter and Quinox Sky Type of India Using Daylight Coefficient Method and Cie Standard General Sky Model

    E-Print Network [OSTI]

    Sutapa Mukherjee M. Tech

    Abstract:- Energy efficiency provided by daylight requires an accurate estimation of the amount of daylight entering a building. The actual daylight illuminance of a room is mainly influenced by the luminance levels and patterns of the sky in the direction of view of the window at that time. The daylight coefficient concept, which considers the changes in the luminance of the sky elements, offers a more effective way of computing indoor daylight illuminances. Recently, Kittler et al. have proposed a new range of 15 standard sky luminance distributions including the CIE (International Commission onIllumination) standard clear sky. Lately, these 15 sky luminance models have been adopted as the CIE Standard General Skies.This paper aims to find out representative CIE (International Commission on Illumination) Standard Clear Sky model(s) for three different seasons-winter solstice, equinox, and summer solstice applicable for prevailing clear sky climatic conditions in India [Roorkee]. Indian measured sky luminance distribution database is available only for Roorkee[29 0 51 ' N; 77 0 53 ' E]. To find out the best match between Indian measured sky luminance distribution and each of five CIE Standard Clear sky models, only sky component of spatial illuminance distribution over the working plane of a room was simulated by MATLABfor three different seasons. Daylight Coefficient method has been applied for the simulation using Indian sky luminance database.The simulation has been done for the room with eight different window orientations ranging from 0 0 to 315 0 with an interval of 45 0 to generate data for the entire sky vault. To find out the

  15. A significant number of Iowa water treatment systems are dependent upon well-based water sources. Because of this, CIRAS efforts have been focused on the "Ground Water Levels" as reported by Iowa DNR. Currently, DNR officials are indicating that restricti

    E-Print Network [OSTI]

    Lin, Zhiqun

    A significant number of Iowa water treatment systems are dependent upon well-based water sources. Because of this, CIRAS efforts have been focused on the "Ground Water Levels" as reported by Iowa DNR. Currently, DNR officials are indicating that restrictions or loss of the water supply is not likely

  16. A Review of Ground Coupled Heat Pump Models Used in Whole-Building Computer Simulation Programs

    E-Print Network [OSTI]

    Do, S. L.; Haberl, J. S.

    2010-01-01T23:59:59.000Z

    Increasingly, building owners are turning to ground source heat pump (GSHP) systems to improve energy efficiency. Ground-coupled heat pump (GCHP) systems with a vertical closed ground loop heat exchanger are one of the more widely used systems. Over...

  17. Ground Control | EMSL

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

    Ground Control Ground Control Released: April 22, 2015 EMSL scientists develop new methods to dig deeper into soil organic matter International Year of the Soils Under our feet...

  18. Residential Ground-Source Heat Pump Program

    Broader source: Energy.gov [DOE]

    Project sites must be located in a utility territory that contributes to the Renewable Energy Trust Fund (National Grid, NSTAR, WMECO, Unitil, and爉unicipal light plants爐hat have agreed to pay i...

  19. Ground Source Heat Pumps | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG| Open Energy Information 2000)2004) |1978) | Open EnergyPumps

  20. Ground Source Heat Pumps | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG| Open Energy Information 2000)2004) |1978) | Open

  1. Ground Source Heat Pump System Data Analysis

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGrid Integration and the CarryingPeer Review GSHP System

  2. Renewable Energy Opportunities at Yuma Proving Ground, Arizona

    SciTech Connect (OSTI)

    Orrell, Alice C.; Kora, Angela R.; Russo, Bryan J.; Williamson, Jennifer L.; Weimar, Mark R.; Gorrissen, Willy J.; Dixon, Douglas R.

    2010-06-30T23:59:59.000Z

    This document provides an overview of renewable resource potential at Yuma Proving Ground, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations.

  3. A SIMULATION ASSESSMENT OF THE HEIGHT OF LIGHT SHELVES TO ENHANCE DAYLIGHTING QUALITY IN TROPICAL OFFICE BUILDINGS UNDER OVERCAST SKY CONDITIONS IN DHAKA, BANGLADESH

    E-Print Network [OSTI]

    Md. Ashikur; Rahman Joarder; Zebun Nasreen Ahmed; Andrew Price; Monjur Mourshed

    The objective of this paper is to highlight the effectiveness of light shelves in tropical office buildings to enhance interior daylighting quality. Daylight simulation was performed for custom light shelves for a typical office floor of Dhaka City in Bangladesh, to determine the best possible location under overcast sky conditions. Six alternative models of a 3m high study space were created with varying heights of light shelves. The 3D models were first generated in the Ecotect to study the distribution and uniformity of daylight in the interior space with splitflux method. These models were then exported to a physically-based backward raytracer, Radiance Synthetic Imaging software to generate realistic lighting levels for validating and crosschecking the Ecotect results. The results showed that for achieving light levels closest to specified standards, light shelves at a height of 2m above floor level perform better among the seven alternatives studied including the alternative where no light shelves are present. Finally, the decisions were verified with DAYSIM simulation program to ensure the compliance of the decisions with dynamic annual climate-based daylight performance metrics.

  4. Demonstration with Energy and Daylighting Assessment of Sunlight Responsive Thermochromic (SRT) Window Systems

    SciTech Connect (OSTI)

    Broekhuis, Michael; Liposcak, Curtis; Witte, Michael; Henninger, Robert; Zhou, Xiaohui; Petzen, George; Buchanan, Michael; Kumar, Sneh

    2012-03-31T23:59:59.000Z

    Pleotint, LLC was able to successfully extrude thermochromic interlayer for use in the fenestration industry. Pleotint has developed a thermochromic sytem that requires two thermochromic colors to make a neutral color when in the tinted state. These two colors were assembled into a single interlayer called a tri-layer prelam by Crown Operations for use in the glass lamination industry. Various locations, orientations, and constructions of thermochromic windows were studied with funds from this contract. Locations included Australia, California, Costa Rica, Indiana, Iowa, Mexico. Installed orientations included vertical and skylight glazing applications. Various constructions included monolithic, double pane, triple pane constructions. A daylighting study was conducted at LinEl Signature. LinEl Signature has a conference room with a sylight roof system that has a west orientation. The existing LinEl Signature conference room had constant tint 40% VLT transparent skylights. Irradiance meters were installed on the interior and exterior sides of a constant tint skylight. After a month and a half of data collection, the irradiance meters were removed and the constant tint skylights were replaced with Pleotint thermochromic skylight windows. The irradiance meters were reinstalled in the same locations and irradiance data was collected. Both data sets were compared. The data showed that there was a linear relationship with exterior and interior irradiance for the existing constant tint skylights. The thermochromic skylights have a non-linear relationship. The thermochromic skylights were able to limit the amount of irradiance that passed through the thermochromic skylight. A second study of the LinEl Signature conference was performed using EnergyPlus to calculate the amount of Illuminance that passed through constant tint skylights as compared to thermochromic skylights. The constant tint skylights transmitted Illuminance is 2.8 times higher than the thermochromic skylights during the months of May, June, July, August and 1.9 times higher than the thermochromic skylight during the months of March, April, September, October. Calculated illuminance levels were much more consistent as compared to the existing constant tint skylights installed at LinEl Signature. This allows for a more comfortable interior space in regard to glare discomfort and interior lighting control. Lawrence Berkeley National Laboratory was contracted to characterize the performance of the thermochromic interlayer and thermochromic window systems. Thermochromic interlayer was characterized with spectrometer equipment. The thermochromic window systems were characterized using LBNL抯 Advanced Window Test Facility. A copy of the report can be found in the Appendix. Iowa State University was contracted to compare thermochromic window technology to constant tint technology. Iowa State University conducted the testing at the Energy Resource Station (ERS). The ERS has the ability to simultaneously test side-by-side competing building technologies. The building is equipped with two identical air handling units, each with its own dedicated and identical chiller. One air handling unit supplies the four test rooms designated as the A rooms and the other unit serves the four test rooms designated as the B rooms. There is one A test room and one B test rooms arranged as pairs in a side-by-side design with each pair having a different exposure. There is a pair of test rooms that face the south, an east and west facing pair. Each of the test rooms is a mirror image of its match with identical construction. The rooms are unoccupied; however, the capability to impose false loads on the rooms exists. The false loads and room lighting can be scheduled to simulate various usage patterns. A copy of the report can be found in the Appendix. GARD Analytics was contracted to compare EnergyPlus building simulations to the data recorded at the Iowa ERS. The goal of this research was to validate the building simulation software developed by the US Department of Energy. EnergyPlus is

  5. Ground Turkey Stroganoff Ingredients

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    Ground Turkey Stroganoff Ingredients: 8 ounces egg noodles, uncooked 1 pound ground turkey 1 onion. Meanwhile, brown ground turkey and onions in non stick skillet until meat is no longer pink and onions cup of egg noodles on plate, top with 1/2 cup of turkey mixture. Equipment: Knife Cutting board

  6. Cooking with Ground Pork

    E-Print Network [OSTI]

    Anding, Jenna

    2008-12-09T23:59:59.000Z

    to thaw. Even when cooked, pork that has been thawed at room temperature can make you sick. Cooking ground pork safely For dishes that contain ground pork, cook the pork before mixing it with other ingredients. How to store cooked ground pork Leftover... dishes made with ground pork should be stored in a covered dish in the refrigerator right away to prevent spoilage. Use it within 3 days. Reheat foods with ground pork until they are steaming hot, bubbling, or at 165 degrees. Other uses Use cooked...

  7. Ground Water Management Act (Virginia)

    Broader source: Energy.gov [DOE]

    Under the Ground Water Management Act of 1992, Virginia manages ground water through a program regulating the withdrawals in certain areas called Ground Water Management Areas (GWMA). Currently,...

  8. Renewable Energy Opportunties at Dugway Proving Ground, Utah

    SciTech Connect (OSTI)

    Orrell, Alice C.; Kora, Angela R.; Russo, Bryan J.; Horner, Jacob A.; Williamson, Jennifer L.; Weimar, Mark R.; Gorrissen, Willy J.; Nesse, Ronald J.; Dixon, Douglas R.

    2010-05-31T23:59:59.000Z

    This document provides an overview of renewable resource potential at Dugway Proving Ground, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. This effort focuses on grid-connected generation of electricity from renewable energy sources and ground source heat pumps (GSHPs). The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 Department of Defense (DoD) Renewables Assessment.

  9. Cooking with Ground Beef

    E-Print Network [OSTI]

    Anding, Jenna

    2008-12-09T23:59:59.000Z

    This fact sheet describes the nutritional value and safe storage of ground beef, a commodity food. It also offers food preparation ideas....

  10. Predaceous Ground Beetles

    E-Print Network [OSTI]

    Sansone, Chris; Minzenmayer, Rick

    2003-06-30T23:59:59.000Z

    Predaceous ground beetles can be a nuisance to homeowners, especially when they are numerous. This publication describes the beetles and discusses ways to prevent and treat them....

  11. Hanford site ground water protection management plan

    SciTech Connect (OSTI)

    Not Available

    1994-10-01T23:59:59.000Z

    Ground water protection at the Hanford Site consists of preventative and remedial measures that are implemented in compliance with a variety of environmental regulations at local, state, and federal levels. These measures seek to ensure that the resource can sustain a broad range of beneficial uses. To effectively coordinate and ensure compliance with applicable regulations, the U.S. Department of Energy has issued DOE Order 5400.1 (DOE 1988a). This order requires all U.S. Department of Energy facilities to prepare separate ground water protection program descriptions and plans. This document describes the Ground Water Protection Management Plan (GPMP) for the Hanford Site located in the state of Washington. DOE Order 5400.1 specifies that the GPMP covers the following general topical areas: (1) documentation of the ground water regime; (2) design and implementation of a ground water monitoring program to support resource management and comply with applicable laws and regulations; (3) a management program for ground water protection and remediation; (4) a summary and identification of areas that may be contaminated with hazardous waste; (5) strategies for controlling hazardous waste sources; (6) a remedial action program; and (7) decontamination, decommissioning, and related remedial action requirements. Many of the above elements are currently covered by existing programs at the Hanford Site; thus, one of the primary purposes of this document is to provide a framework for coordination of existing ground water protection activities. The GPMP provides the ground water protection policy and strategies for ground water protection/management at the Hanford Site, as well as an implementation plan to improve coordination of site ground water activities.

  12. Daylight photocatalysis performance of biomorphic CeO{sub 2} hollow fibers prepared with lens cleaning paper as biotemplate

    SciTech Connect (OSTI)

    Qian, Junchao; Chen, Feng [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China)] [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China); Wang, Fang; Zhao, Xiaobing [Department of Materials Science and Engineering, Changzhou University, 213164 Changzhou (China)] [Department of Materials Science and Engineering, Changzhou University, 213164 Changzhou (China); Chen, Zhigang, E-mail: ziyou1900@gmail.com [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China) [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China); Jiangsu Key Laboratory for Environment Functional Materials, 215009 Suzhou University of Science and Technology, Suzhou (China); State Key laboratory of Crystal Material, Shandong University, 250100 Jinan (China)

    2012-08-15T23:59:59.000Z

    Highlights: ? A novel, simple and eco-friendly approach for hierarchical, biomorphic CeO{sub 2} hollow fibers with mesoporous tube walls is presented by using paper as template. ? The biomorphic CeO{sub 2} fibers was composed of nanosheets with bimodal pore-size mesoporous distribution and exhibited high light-harvesting under sunlight irradiation. ? The CeO{sub 2} microfibers biomimicking the natural plant structures have promising application for photodegradation of organic pollutants in water. -- Abstract: Hierarchical, biomorphic CeO{sub 2} hollow fibers with mesoporous tube walls have been fabricated using lens cleaning paper as biotemplates. After sintered at 550 癈 in air, the cellulosic fibers of paper were converted into micro-tubes composing of CeO{sub 2} crystallites with grain size about 8 nm. The photocatalytic activity of the CeO{sub 2} fibers was evaluated by photodegradation efficiency of methylene blue in aqueous solution under daylight irradiation. The characterized results show that the CeO{sub 2} fibers faithfully replicated micro-fibrous structure derived from original template and possessed dramatic enhanced photocatalytic activity compared with bulk CeO{sub 2}. This simple biotemplate method provides a cost-effective and eco-friendly route to obtain high performance photocatalysts.

  13. Ground State Quantum Computation

    E-Print Network [OSTI]

    Ari Mizel; M. W. Mitchell; Marvin L. Cohen

    1999-08-11T23:59:59.000Z

    We formulate a novel ground state quantum computation approach that requires no unitary evolution of qubits in time: the qubits are fixed in stationary states of the Hamiltonian. This formulation supplies a completely time-independent approach to realizing quantum computers. We give a concrete suggestion for a ground state quantum computer involving linked quantum dots.

  14. Is the hourly data from the NREL PV Watts program adjusted for daylight

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup | OpenHunanInformation sourceInvensys BuildingIowaIrara

  15. DC source assemblies

    DOE Patents [OSTI]

    Campbell, Jeremy B; Newson, Steve

    2013-02-26T23:59:59.000Z

    Embodiments of DC source assemblies of power inverter systems of the type suitable for deployment in a vehicle having an electrically grounded chassis are provided. An embodiment of a DC source assembly comprises a housing, a DC source disposed within the housing, a first terminal, and a second terminal. The DC source also comprises a first capacitor having a first electrode electrically coupled to the housing, and a second electrode electrically coupled to the first terminal. The DC source assembly further comprises a second capacitor having a first electrode electrically coupled to the housing, and a second electrode electrically coupled to the second terminal.

  16. Building America Case Study: Ground Source Heat Pump Research, TaC Studios Residence, Atlanta, Georigia (Fact Sheet), Technology Solutions for New and Existing Homes, Energy Efficiency & Renewable Energy (EERE)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy Future of CSP:Brookhaven TeachingCommunity-ScaleTotalGround

  17. Ground potential rise monitor

    DOE Patents [OSTI]

    Allen, Zachery Warren; Zevenbergen, Gary Allen

    2012-07-17T23:59:59.000Z

    A device and method for detecting ground potential rise (GPR) comprising a first electrode, a second electrode, and a voltage attenuator. The first electrode and the second electrode are both electrically connected to the voltage attenuator. A means for determining the presence of a dangerous ground potential is connected to the voltage attenuator. The device and method further comprises a means for enabling one or more alarms upon the detection of the dangerous ground potential. Preferably, a first transmitter/receiver is connected to the means for enabling one or more alarms. Preferably, a second transmitter/receiver, comprising a button, is electromagnetically connected to the first transmitter/receiver. Preferably, the means for determining the presence of a dangerous ground potential comprises a means for determining the true RMS voltage at the output of the voltage attenuator, a transient detector connected to the output of the voltage attenuator, or a combination thereof.

  18. Stepped frequency ground penetrating radar

    DOE Patents [OSTI]

    Vadnais, Kenneth G. (Ojai, CA); Bashforth, Michael B. (Buellton, CA); Lewallen, Tricia S. (Ventura, CA); Nammath, Sharyn R. (Santa Barbara, CA)

    1994-01-01T23:59:59.000Z

    A stepped frequency ground penetrating radar system is described comprising an RF signal generating section capable of producing stepped frequency signals in spaced and equal increments of time and frequency over a preselected bandwidth which serves as a common RF signal source for both a transmit portion and a receive portion of the system. In the transmit portion of the system the signal is processed into in-phase and quadrature signals which are then amplified and then transmitted toward a target. The reflected signals from the target are then received by a receive antenna and mixed with a reference signal from the common RF signal source in a mixer whose output is then fed through a low pass filter. The DC output, after amplification and demodulation, is digitized and converted into a frequency domain signal by a Fast Fourier Transform. A plot of the frequency domain signals from all of the stepped frequencies broadcast toward and received from the target yields information concerning the range (distance) and cross section (size) of the target.

  19. THE DAYLIGHTING SOLUTION

    E-Print Network [OSTI]

    Selkowitz, Stephen

    2013-01-01T23:59:59.000Z

    sho\\l'rooms. Use of solar energy for thermal control insolar applications in buildings has focused on providing thermal energy

  20. Daylighting | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you want toworldPowerHome | Department of EnergySolar2 at the

  1. Daylighting | Department of Energy

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

    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 1,006 492 742 33Frequently20,000 Russian NuclearandJunetrack graphics4 Volume 1

  2. Window Daylighting Demo

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your DensityEnergy U.S.-China Electric VehicleCenters | Department ofoftoMay 8,Energy Wind Vision:

  3. Daylighting | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube| Department ofDepartment9-92JanuaryProgram AreasDavis-Bacon

  4. GROUND WATER CONTAMINATION

    SciTech Connect (OSTI)

    Unknown

    1999-09-01T23:59:59.000Z

    As required by the terms of the above referenced grant, the following summary serves as the Final Report for that grant. The grant relates to work performed at two separate sites, the Hoe Creek Underground Coal Gasification Site south of Gillette, Wyoming, and the Rock Springs In-Situ Oil Shale Retort Site near Rock Springs, Wyoming. The primary concern to the State of Wyoming at each site is ground water contamination (the primary contaminants of concern are benzene and related compounds), and the purpose of the grant has been to provide tiding for a Geohydrologist at the appropriate State agency, specifically the Land Quality Division (LQD) of the Wyoming Department of Environmental Quality. The LQD Geohydrologist has been responsible for providing technical and regulatory support to DOE for ground water remediation and subsequent surface reclamation. Substantial progress has been made toward remediation of the sites, and continuation of LQD involvement in the remediation and reclamation efforts is addressed.

  5. A Modified Analytical Method for Simulating Cyclic Operation of Vertical U-Tube Ground-Coupled Heat Pumps

    E-Print Network [OSTI]

    Dobson, M. K.; O'Neal, D. L.; Aldred, W.

    1994-01-01T23:59:59.000Z

    A modified analytical model is presented which discretizes the ground-coupled heat exchanger of a ground-coupled heat pump and utilized a separate cylindrical source solution for each element. First law expressions are utilized for each element...

  6. Ground-Based Radar

    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 Power AdministrationField8,Dist.NewofGeothermal Heaton Armed ServicesGround-Based Microwave

  7. Unattended ground sensor situation assessment workstation

    SciTech Connect (OSTI)

    Jeppesen, D.; Trellue, R.

    1997-04-01T23:59:59.000Z

    Effective utilization of unattended ground sensors (UGSs) in a theater reconnaissance, surveillance, target acquisition, and kill assessment environment requires that a human operator be able to interpret, and collectively assess, the significance of real time data obtained from UGS emplacements over large geographical regions of interest. The products of this UGS data interpretation and assessment activity can then be used in the decision support process for command level evaluation of appropriate courses of action. Advancements in both sensor hardware technology and in software systems and processing technology have enabled the development of practical real time situation assessment capabilities based upon information from unattended ground sensors. A decision support workstation that employs rule-based expert system processing of reports from unattended ground sensors is described. The primary goal of this development activity is to produce a suite of software to track vehicles using data from unattended ground sensors. The situational assessment products from this system have stand-alone utility, but are also intended to provide cueing support for overhead sensors and supplementary feeds to all-source fusion centers. The conceptual framework, developmental architecture, and demonstration field tests of the system are described.

  8. SRS Burial Ground Complex: Remediation in Progress

    SciTech Connect (OSTI)

    Griffin, M. [Westinghouse Savannah River Company, AIKEN, SC (United States); Crapse, B.; Cowan, S.

    1998-01-21T23:59:59.000Z

    Closure of the various areas in the Burial Ground Complex (BGC) represents a major step in the reduction of risk at the Savannah River Site (SRS) and a significant investment of resources. The Burial Ground Complex occupies approximately 195 acres in the central section of the SRS. Approximately 160 acres of the BGC consists of hazardous and radioactive waste disposal sites that require remediation. Of these source acres, one-third have been remediated while two-thirds are undergoing interim or final action. These restoration activities have been carried out in a safe and cost effective manner while minimizing impact to operating facilities. Successful completion of these activities is in large part due to the teamwork demonstrated by the Department of Energy, contractor/subcontractor personnel, and the regulatory agencies. The experience and knowledge gained from the closure of these large disposal facilities can be used to expedite closure of similar facilities.

  9. Ground potential rise monitor

    DOE Patents [OSTI]

    Allen, Zachery W. (Mandan, ND); Zevenbergen, Gary A. (Arvada, CO)

    2012-04-03T23:59:59.000Z

    A device and method for detecting ground potential rise (GPR) comprising positioning a first electrode and a second electrode at a distance from each other into the earth. The voltage of the first electrode and second electrode is attenuated by an attenuation factor creating an attenuated voltage. The true RMS voltage of the attenuated voltage is determined creating an attenuated true RMS voltage. The attenuated true RMS voltage is then multiplied by the attenuation factor creating a calculated true RMS voltage. If the calculated true RMS voltage is greater than a first predetermined voltage threshold, a first alarm is enabled at a local location. If user input is received at a remote location acknowledging the first alarm, a first alarm acknowledgment signal is transmitted. The first alarm acknowledgment signal is then received at which time the first alarm is disabled.

  10. Burial Ground Expansion Hydrogeologic Characterization

    SciTech Connect (OSTI)

    Gaughan , T.F.

    1999-02-26T23:59:59.000Z

    Sirrine Environmental Consultants provided technical oversight of the installation of eighteen groundwater monitoring wells and six exploratory borings around the location of the Burial Ground Expansion.

  11. Coal mine ground control. 3rd ed.

    SciTech Connect (OSTI)

    Peng, S.S.

    2008-09-15T23:59:59.000Z

    The third edition not only completely revises and updates the original subject areas, but also is broadened to include a number of new topics such as high horizontal stresses, computer modeling, and highwall stability. The subject areas covered in this book define the current field of coal mine ground control, except for the recently emerging topic of mine seals and some conventional subjects such as coal/rock cutting and impoundment dams. It contains 1,134 references from all published sources, and archived since 1876.

  12. National Certification Standard for Ground Source Heat Pump Personnel

    SciTech Connect (OSTI)

    Kelly, John [Geothermal Heat Pump Consortium] [Geothermal Heat Pump Consortium

    2013-07-31T23:59:59.000Z

    The National Certification Standard for the Geothermal Heat Pump Industry adds to the understanding of the barriers to rapid growth of the geothermal heat pump (GHP) industry by bringing together for the first time an analysis of the roles and responsibilities of each of the individual job tasks involved in the design and installation of GHP systems. The standard addresses applicable qualifications for all primary personnel involved in the design, installation, commissioning, operation and maintenance of GHP systems, including their knowledge, skills and abilities. The resulting standard serves as a foundation for subsequent development of curriculum, training and certification programs, which are not included in the scope of this project, but are briefly addressed in the standard to describe ways in which the standard developed in this project may form a foundation to support further progress in accomplishing those other efforts. Follow-on efforts may use the standard developed in this project to improve the technical effectiveness and economic feasibility of curriculum development and training programs for GHP industry personnel, by providing a more complete and objective assessment of the individual job tasks necessary for successful implementation of GHP systems. When incorporated into future certification programs for GHP personnel, the standard will facilitate increased consumer confidence in GHP technology, reduce the potential for improperly installed GHP systems, and assure GHP system quality and performance, all of which benefit the public through improved energy efficiency and mitigated environmental impacts of the heating and cooling of homes and businesses.

  13. Dispersion modeling of ground-level area sources of particulate

    E-Print Network [OSTI]

    Fritz, Bradley Keith

    1998-01-01T23:59:59.000Z

    , as shown by Equation 3. f(z) = exp ?, + exp? Y This curve represents the distribution of pollutant in the y-z plane. At any point y, a fraction of the total area of the curve [1] is determined The width of the curve depends on o?, a dispersion... the terminal settling velocity. Equation 6 and 7 are used. C p p dp g 18' where: t-o. ss, 'I C = 1+ ? 2. 514+ 0. 8e d (Eq. 6) (Eq 7) V, = Terminal Settling Velocity [m/s] C = Cunningham's Correction Factor [1/1] p, = density; 1500 [kg/m'] ) = gas...

  14. Tennessee: Ground-Source Heat Pump Receives Innovation Award...

    Office of Environmental Management (EM)

    the pump and blower motors when heating or cooling demand is low, the heat pump reduces electricity consumption by 80% or more during much of the year. Based on field tests and...

  15. Hybrid Ground Source System Analysis and Tool Development

    Broader source: Energy.gov [DOE]

    Project objectives: 1. Compile filtered hourly data for three monitored hybrid installations. 2.Validate existing HyGCHP model. 3.Refine and enhance the HyGCHP model (usability / capability). 4. Demonstrate impact of actual hybrid installations. 5. Report lessons learned and impacts of HyGSHPs to design/engineering community.

  16. Investigating Ground Source Geothermal Heating for Garfield House

    E-Print Network [OSTI]

    Aalberts, Daniel P.

    of historical significance associated with Garfield, as it dates back to 1885, serving as a fraternity house heating oil consumption from January 2004 through December 2009, or 72 monthly values. Formulas were set and revised consumption rates were then assigned a conservative cost estimate based on retail price data from

  17. Optimal Ground-Source Heat Pump System Design

    Broader source: Energy.gov [DOE]

    Project objectives: Develop a least-cost design tool (OptGSHP) that will enable GSHP developers to analyze system cost and performance in a variety of building applications to support both design, operational and purchase decisions. Integrate groundwater flow and heat transport into OptGSHP. Demonstrate the usefulness of OptGSHP and the significance of a systems approach to the design of GSHP systems.

  18. Ground Source Heat Pump System Data Analysis | Department of Energy

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

    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 742Energy ChinaofSchaefer To: CongestionDevelopment of aLoggingsubscriber toSenate1Emerging

  19. Data Analysis from Ground Source Heat Pump Demonstration Projects |

    Office of Environmental Management (EM)

    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 1,006 492 742 33 1112011AT&T,Office of Policy, OAPMMilestone | DepartmentEA FeaturedDUFM304WDB)

  20. Ball State University Completes Nation's Largest Ground-Source Geothermal

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments fromof EnergyBILIWG:Background:Bagdad Plant1 ISSUED:System

  1. Ground Source Heat Pump Subprogram Overview | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGrid Integration and the Carrying

  2. Ground Source Heat Pump System Data Analysis | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGrid Integration and the CarryingPeer Review GSHP

  3. Ground Turkey Stir Fry Ingredients

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    Ground Turkey Stir Fry Ingredients: 1 1/2 cups brown rice, medium- grain, making 3 cups cooked 1 pound ground turkey 4 zucchini 1 onion 1 green pepper 1/4 teaspoon pepper Directions 1. Cook brown rice turkey in skillet and use a spatula to break beef into small pieces as it browns. Keep on stirring

  4. Acoustic and Seismic Modalities for Unattended Ground Sensors

    SciTech Connect (OSTI)

    Elbring, G.J.; Ladd, M.D.; McDonald, T.S.; Sleefe, G.E.

    1999-03-31T23:59:59.000Z

    In this paper, we have presented the relative advantages and complementary aspects of acoustic and seismic ground sensors. A detailed description of both acoustic and seismic ground sensing methods has been provided. Acoustic and seismic phenomenology including source mechanisms, propagation paths, attenuation, and sensing have been discussed in detail. The effects of seismo-acoustic and acousto-seismic interactions as well as recommendations for minimizing seismic/acoustic cross talk have been highlighted. We have shown representative acoustic and seismic ground sensor data to illustrate the advantages and complementary aspects of the two modalities. The data illustrate that seismic transducers often respond to acoustic excitation through acousto-seismic coupling. Based on these results, we discussed the implications of this phenomenology on the detection, identification, and localization objectives of unattended ground sensors. We have concluded with a methodology for selecting the preferred modality (acoustic and/or seismic) for a particular application.

  5. Regional analysis of ground and above-ground climate

    SciTech Connect (OSTI)

    Not Available

    1981-12-01T23:59:59.000Z

    The regional suitability of underground construction as a climate control technique is discussed with reference to (1) a bioclimatic analysis of long-term weather data for 29 locations in the United States to determine appropriate above ground climate control techniques, (2) a data base of synthesized ground temperatures for the coterminous United States, and (3) monthly dew point ground temperature comparisons for identifying the relative likelihood of condensation from one region to another. It is concluded that the suitability of earth tempering as a practice and of specific earth-sheltered design stereotypes varies geographically; while the subsurface almost always provides a thermal advantage on its own terms when compared to above ground climatic data, it can, nonetheless, compromise the effectiveness of other, regionally more important climate control techniques. Also contained in the report are reviews of above and below ground climate mapping schemes related to human comfort and architectural design, and detailed description of a theoretical model of ground temperature, heat flow, and heat storage in the ground. Strategies of passive climate control are presented in a discussion of the building bioclimatic analysis procedure which has been applied in a computer analysis of 30 years of weather data for each of 29 locations in the United States.

  6. COMPARATIVE STUDY AMONG HYBRID GROUND SOURCE HEAT PUMP SYSTEM, COMPLETE GROUND SOURCE HEAT PUMP AND CONVENTIONAL HVAC SYSTEM

    SciTech Connect (OSTI)

    Jiang Zhu; Yong X. Tao

    2011-11-01T23:59:59.000Z

    In this paper, a hotel with hybrid geothermal heat pump system (HyGSHP) in the Pensacola is selected and simulated by the transient simulation software package TRNSYS [1]. To verify the simulation results, the validations are conducted by using the monthly average entering water temperature, monthly facility consumption data, and etc. And three types of HVAC systems are compared based on the same building model and HVAC system capacity. The results are presented to show the advantages and disadvantages of HyGSHP compared with the other two systems in terms of energy consumptions, life cycle cost analysis.

  7. An experimental study of heating performance and seasonal modeling of vertical U-tube ground coupled heat pumps

    E-Print Network [OSTI]

    Margo, Randal E.

    1992-01-01T23:59:59.000Z

    configurations of heat pumps: air source heat pumps (ASHP) and ground coupled heat pumps (GCHP). Air source heat pumps extract energy from the outdoor air in the heating mode and reject excess heat in the cooling mode. One significant drawback to ASHP... season. Ground coupled heat pumps use the ground as a heat source or heat sink through The format of this proposal follows that of the Transactions of the American Society of Heating, Refrigeration and Air-Conditioning Engineers. the use of a ground...

  8. QUEENSLAND UNIVERSITY OF TECHNOLOGY CENTRE FOR MEDICAL, HEALTH AND ENVIRONMENTAL PHYSICS SCHOOL OF PHYSICAL AND CHEMICAL SCIENCES MODIFICATION OF ATRIUM DESIGN TO IMPROVE THERMAL AND DAYLIGHTING PERFORMANCE

    E-Print Network [OSTI]

    Ashley Mabb; Centre For Medical; Environmental Physics

    The inclusion of a central court or atrium within a building is a popular design due to its aesthetic, open appearance. The greater penetration of natural light aids in the reduction in use of artificial lighting during the day. Care must be taken to balance the solar heat gain against the daylight penetration. This balance is critical for the reduction of the electrical energy load of the building, whilst maintaining a high level of comfort for the occupants. In the tropics modifications to atrium building designs are necessary to diminish high elevation direct solar heat gain. Traditionally, shading the window apertures or lowering the transmission through the glazing was used. These solutions limit the view and reduce the light level. The use of angular selective glazing upon atria allows the rejection of high elevation direct sunlight whilst redirecting and therefore improving low elevation skylight penetration. Tilted angular selective glazing used upon adjoining spaces to atria help vertical light in the atrium well to be redirected horizontally deep into the space. These effects reduce overheating which would normally restrict the use of atria in warmer environments as well as improve illumination penetration into adjoining spaces.

  9. Environmental assessment of ground-water compliance activities at the Uranium Mill Tailings Site, Spook, Wyoming

    SciTech Connect (OSTI)

    NONE

    1997-02-01T23:59:59.000Z

    This report assesses the environmental impacts of the Uranium Mill Tailings Site at Spook, Wyoming on ground water. DOE previously characterized the site and monitoring data were collected during the surface remediation. The ground water compliance strategy is to perform no further remediation at the site since the ground water in the aquifer is neither a current nor potential source of drinking water. Under the no-action alternative, certain regulatory requirements would not be met.

  10. NLS ground states on graphs

    E-Print Network [OSTI]

    Riccardo Adami; Enrico Serra; Paolo Tilli

    2014-06-16T23:59:59.000Z

    We investigate the existence of ground states for the subcritical NLS energy on metric graphs. In particular, we find out a topological assumption that guarantees the nonexistence of ground states, and give an example in which the assumption is not fulfilled and ground states actually exist. In order to obtain the result, we introduce a new rearrangement technique, adapted to the graph where it applies. Owing to such a technique, the energy level of the rearranged function is improved by conveniently mixing the symmetric and monotone rearrangement procedures.

  11. GROUND-COUPLED HEAT-PUMP-SYSTEM EXPERIMENTAL RESULTS* Philip D. Metz

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    the cost and feasibility of a residential ground coupled heat pump space conditioning system requiring#12;GROUND-COUPLED HEAT-PUMP-SYSTEM EXPERIMENTAL RESULTS* Philip D. Metz _Solar and Renewables house in Upton, Long Island, New York has been heated and cooled by a liquid source heat pump using

  12. Characterizing Hydraulic Properties and Ground-Water Chemistry in Fractured-Rock Aquifers: A User's Manual

    E-Print Network [OSTI]

    Characterizing Hydraulic Properties and Ground-Water Chemistry in Fractured-Rock Aquifers: A User source for science about the Earth, its natural and living resources, natural hazards., 2007, Characterizing hydraulic properties and ground-water chemistry in fractured-rock aquifers: A user

  13. Ground Penetrating Radar, Barrow, Alaska

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

    John Peterson

    This is 500 MHz Ground Penetrating Radar collected along the AB Line in Intensive Site 1 beginning in October 2012 and collected along L2 in Intensive Site 0 beginning in September 2011. Both continue to the present.

  14. Ground Water Management Regulations (Louisiana)

    Broader source: Energy.gov [DOE]

    The rules and regulations apply to the management of the state's ground water resources. In addition, the Commissioner of Conservation has recommended that oil and gas operators with an interest...

  15. A Simplified Procedure for Sizing Vertical Ground Coupled Heat Pump Heat Exchangers for Residences in Texas

    E-Print Network [OSTI]

    O'Neal, D. L.; Gonzalez, J. A.; Aldred, W.

    1994-01-01T23:59:59.000Z

    the simplified method were compared to two available heat exchanger sizing methods: the National Water Well Association (NWWA) and the International Ground Source Heat Pump Association (IGSHPA). The simplified method predicted shorter lengths than those from...

  16. A Simplified Procedure for Sizing Vertical Ground Coupled Heat Pump Heat Exchangers for Residences in Texas

    E-Print Network [OSTI]

    O'Neal, D. L.; Gonzalez, J. A.; Aldred, W.

    1994-01-01T23:59:59.000Z

    the simplified method were compared to two available heat exchanger sizing methods: the National Water Well Association (NWWA) and the International Ground Source Heat Pump Association (IGSHPA). The simplified method predicted shorter lengths than those from...

  17. A simplified methodology for sizing ground coupled heat pump heat exchangers in cooling dominated climates

    E-Print Network [OSTI]

    Gonzalez, Jose Antonio

    1993-01-01T23:59:59.000Z

    between GSIM and two commercially available heat exchanger sizing methods, the National Water Well Association (NWWA) and the International Ground Source Heat Pump Association (IGSHPA) methods, was performed. GSIM heat exchanger lengths for Dallas were... Pump Capacity and Cooling Load. . . . . Oversizing and Undersizing the Heat Pump. . . . . . . . . . . . . . Summary. . 72 74 76 78 80 82 85 87 90 92 IX COMPARISON OF HEAT EXCHANGER SIZING METHODS . . 93 International Ground Source Heat...

  18. Category:Ground Gravity Survey | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here. Category:Conceptual Model Add.pngpage?source HistoryGroundGround

  19. Wide band stepped frequency ground penetrating radar

    DOE Patents [OSTI]

    Bashforth, M.B.; Gardner, D.; Patrick, D.; Lewallen, T.A.; Nammath, S.R.; Painter, K.D.; Vadnais, K.G.

    1996-03-12T23:59:59.000Z

    A wide band ground penetrating radar system is described embodying a method wherein a series of radio frequency signals is produced by a single radio frequency source and provided to a transmit antenna for transmission to a target and reflection therefrom to a receive antenna. A phase modulator modulates those portions of the radio frequency signals to be transmitted and the reflected modulated signal is combined in a mixer with the original radio frequency signal to produce a resultant signal which is demodulated to produce a series of direct current voltage signals, the envelope of which forms a cosine wave shaped plot which is processed by a Fast Fourier Transform Unit 44 into frequency domain data wherein the position of a preponderant frequency is indicative of distance to the target and magnitude is indicative of the signature of the target. 6 figs.

  20. Wide band stepped frequency ground penetrating radar

    DOE Patents [OSTI]

    Bashforth, Michael B. (Buellton, CA); Gardner, Duane (Santa Maria, CA); Patrick, Douglas (Santa Maria, CA); Lewallen, Tricia A. (Ventura, CA); Nammath, Sharyn R. (Santa Barbara, CA); Painter, Kelly D. (Goleta, CA); Vadnais, Kenneth G. (Alexandria, VA)

    1996-01-01T23:59:59.000Z

    A wide band ground penetrating radar system (10) embodying a method wherein a series of radio frequency signals (60) is produced by a single radio frequency source (16) and provided to a transmit antenna (26) for transmission to a target (54) and reflection therefrom to a receive antenna (28). A phase modulator (18) modulates those portion of the radio frequency signals (62) to be transmitted and the reflected modulated signal (62) is combined in a mixer (34) with the original radio frequency signal (60) to produce a resultant signal (53) which is demodulated to produce a series of direct current voltage signals (66) the envelope of which forms a cosine wave shaped plot (68) which is processed by a Fast Fourier Transform unit 44 into frequency domain data (70) wherein the position of a preponderant frequency is indicative of distance to the target (54) and magnitude is indicative of the signature of the target (54).

  1. Nonlinear Dynamics of Longitudinal Ground Vehicle Traction

    E-Print Network [OSTI]

    Shaw, Steven W.

    asphalt b) Wet asphalt c) Gravel d) Packed Snow Nonlinear Dynamics of Longitudinal Ground Vehicle Traction

  2. An experimental study of heating performance and seasonal modeling of vertical U-tube ground coupled heat pumps

    E-Print Network [OSTI]

    Margo, Randal E.

    1992-01-01T23:59:59.000Z

    , 1985; Mei & Emerson, 1985; Couvillion, 1985; Edwards & Vitta, 1985; Mei & Baxter, 1986; Cane & Forgas, 1991, Deerman, 1991; Dobson, 1991]. Ground coupled heat pumps have the potential to perform more efficiently than air source heat pumps (ASHP... configurations of heat pumps: air source heat pumps (ASHP) and ground coupled heat pumps (GCHP). Air source heat pumps extract energy from the outdoor air in the heating mode and reject excess heat in the cooling mode. One significant drawback to ASHP...

  3. acetate therapy improves: Topics by E-print Network

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

    causes a biochemical "full-spectrum" implies a light source that closely resembles daylight. Like natural daylight, full Bates, Rebecca A. 6 In Proceedings of IEEE Virtual...

  4. adaptive full-spectrum solor: Topics by E-print Network

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

    causes a biochemical "full-spectrum" implies a light source that closely resembles daylight. Like natural daylight, full Bates, Rebecca A. 2 Age and metallicity of Galactic...

  5. Hanford Site ground-water monitoring for 1993

    SciTech Connect (OSTI)

    Dresel, P.E.; Luttrell, S.P.; Evans, J.C. [and others

    1994-09-01T23:59:59.000Z

    This report presents the results of the Ground-Water Surveillance Project monitoring for calendar year 1993 on the Hanford Site, Washington. Hanford Site operations from 1943 onward produced large quantities of radiological and chemical waste that have impacted ground-water quality on the Site. Monitoring of water levels and ground-water chemistry is performed to track the extent of contamination and trends in contaminant concentrations. The 1993 monitoring was also designed to identify emerging ground-water quality problems. The information obtained is used to verify compliance with applicable environmental regulations and to evaluate remedial actions. Data from other monitoring and characterization programs were incorporated to provide an integrated assessment of Site ground-water quality. Additional characterization of the Site`s geologic setting and hydrology was performed to support the interpretation of contaminant distributions. Numerical modeling of sitewide ground-water flow also supported the overall project goals. Water-level monitoring was performed to evaluate ground-water flow directions, to track changes in water levels, and to relate such changes to changes in site disposal practices. Water levels over most of the Hanford Site continued to decline between June 1992 and June 1993. The greatest declines occurred in the 200-West Area. These declines are part of the continued response to the cessation of discharge to U Pond and other disposal facilities. The low permeability in this area which enhanced mounding of waste-water discharge has also slowed the response to the reduction of disposal. Water levels remained nearly constant in the vicinity of B Pond, as a result of continued disposal to the pond. Water levels measured from wells in the unconfined aquifer north and east of the Columbia River indicate that the primary source of recharge is irrigation practices.

  6. Measurement of Helium-3/Helium-4 Ratios in Soil Gas at the 618-11 Burial Ground

    SciTech Connect (OSTI)

    Olsen, Khris B.; Dresel, P Evan; Evans, John C.

    2001-10-31T23:59:59.000Z

    Seventy soil gas-sampling points were installed around the perimeter of the 618-11 Burial Ground, approximately 400 feet downgradient of well 699-13-3A, and in four transects downgradient of the burial ground to a maximum distance of 3,100 feet. Soil gas samples were collected and analyzed for helium-3/helium-4 ratios from these 70 points. Helium-3/helium-4 ratios determined from the soil gas sampling points showed significant enrichments, relative to ambient air helium-3 concentrations. The highest concentrations were located along the northern perimeter of the burial ground. Helium-3/helium-4 ratios (normalized to the abundances in ambient air) ranged from 1.0 to 62 around the burial ground. The helium-3/helium-4 ratios from the 4 transect downgradient of the burial ground ranged from 0.988 to 1.68. The helium-3/helium-4 ratios from around the burial ground suggest there is a vadose zone source of tritium along the north side of the burial ground. This vadose zone source is likely the source of tritium in the groundwater. The helium-3/helium-4 ratios also suggest the groundwater plume is traveling east-northeast from the burial ground and the highest groundwater tritium value may be to the north of well 699-13-3A. Finally, there appears to be no immediately upgradient sources of tritium impacting the burial ground since all the upgradient helium-3/helium-4 ratios are approximately 1.0.

  7. In-Ground Radiation Detection

    SciTech Connect (OSTI)

    McCormick, Kathleen R.; Stromswold, David C.; Woodring, Mitchell L.; Ely, James H.; Siciliano, Edward R.; Caggiano, Joseph A.; Hensley, Walter K.

    2006-10-29T23:59:59.000Z

    Vertically oriented radiation detectors may not provide sufficient screening in rail or aviation applications. Railcars can be heavily shielded on the sides, reducing the sensitivity of vertically mounted monitors. For aviation, the distance required for wingspan clearance reduces a vertical detector抯 coverage of the fuselage. To surmount these, and other, challenging operational and sensitivity issues, we have investigated the use of in-ground radiation detectors. (PIET-43741-TM-605).

  8. Montana Ground Water Assessment Act (Montana)

    Broader source: Energy.gov [DOE]

    This statute establishes a program to systematically assess and monitor the state's ground water and to disseminate the information to interested persons in order to improve the quality of ground...

  9. DAYLIGHTING DIRECTORY 1/1980

    E-Print Network [OSTI]

    ,

    2012-01-01T23:59:59.000Z

    PRESENTATIONS ' ~solar Radiation Data, Natural Lighting, andJUROVICS, S.A. "Solar Radiation Data, Natural Lighting, and

  10. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    with various 憄erformance indicators becomes ever moreextent that such performance indicators are crude, or the

  11. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    properties of the space, the exterior context, and interiorand exterior shading devices. In the short term, evaluation of spaces

  12. Natural Daylighting - An Energy Analysis

    E-Print Network [OSTI]

    Jarrell, R. P.

    1987-01-01T23:59:59.000Z

    tiers of elevators, which afforded met by the codes in both economic and energy savings. Because at the time of the design and con- Of the basic premise of the planning con- ~truction. The following table gives data cept, the two-tower scheme... temperature and ventilation control is provided by induction boxes. These boxes reclaim up to 50 percent of the heat from the lights by inducing warm air from the ceiling plenum to the exterior areas where heat is needed in winter. In the summer...

  13. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    illumination values. The luminance of the CIE standardilluminance, radiance and luminance) using sun and skyon the cumu- lative luminance (or radiance) e?ect of (

  14. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    the time-stamp. The sky luminance distribution is eitherradiance and luminance) using sun and sky conditions thatlative luminance (or radiance) e?ect of (hourly) sky and the

  15. Daylighting Calculation in DOE-2

    E-Print Network [OSTI]

    Winkelmann, F.C

    2013-01-01T23:59:59.000Z

    8 2.4 Sky LuminanceXBL~8294589 6. Clear sky luminance distribution as measuredand overcast sky DYL Sky luminance ' y DNSOL I Direct

  16. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    Mardaljevic and A. Nabil. Electrochromic glazing and facadeoptimiza- tion of electrochromic operations for occupantmodulating materials (e.g. electrochromic glazing), blinds,

  17. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    section discusses how sustainability and energy-use concernsSustainability and compliance The drive towards sustainable, low-energy

  18. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    towards sustainable, low-energy buildings has increased thetowards sustainable, low-energy buildings places increasing

  19. daylight | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindey Wind Home Rmckeel's picturecontest Homedatasetdaylight

  20. OpenEI Community - daylight

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcernsCompany Oil and GasOff

  1. Nanolens Window Coatings for Daylighting

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in Many Devils Wash,Energy NRELNamrata KolachalamCoolingofNanolens

  2. Ground Turkey and Potato Plate Ingredients

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    Ground Turkey and Potato Plate Ingredients: 1 onion 1/2 pound ground turkey 1 cup ketchup, low, brown ground turkey and onion together over medium heat 8 to 10 minutes or until turkey is no longer. Return turkey to skillet. 3. Add ketchup to skillet; cover and simmer over medium-low heat 10 minutes. 4

  3. Case Study/ Ground Water Sustainability: Methodology and

    E-Print Network [OSTI]

    Zheng, Chunmiao

    , or the lack thereof, of ground water flow systems driven by similar hydrogeologic and economic conditionsCase Study/ Ground Water Sustainability: Methodology and Application to the North China Plain of a ground water flow system in the North China Plain (NCP) subject to severe overexploitation and rapid

  4. TEX-A-SYST: Reducing the Risk of Ground Water Contamination by Improving Fertilizer Storage and Handling

    E-Print Network [OSTI]

    Harris, Bill L.; Hoffman, D.; Mazac Jr., F. J.; Kantor, A. S.

    1997-08-29T23:59:59.000Z

    Fertilizer is a major source of ground water contamination. This publication emphasizes the best management practices for storing fertilizers, whether you are building a new facility or modifying an existing one. It also includes information on safe...

  5. TEX-A-SYST: Reducing the Risk of Ground Water Contamination by Improving Well-Head Management and Conditions

    E-Print Network [OSTI]

    Harris, Bill L.; Hoffman, D.; Mazac Jr., F. J.

    1997-08-29T23:59:59.000Z

    The condition of a water well and its proximity to contamination sources determine the risk it poses to ground water. Topics covered include well location, well construction, well age and type, well depth, well maintenance, water testing...

  6. Hanford Site ground-water monitoring for 1992

    SciTech Connect (OSTI)

    Dresel, P.E.; Newcomer, D.R.; Evans, J.C.; Webber, W.D.; Spane, F.A. Jr.; Raymond, R.G.; Opitz, B.E.

    1993-06-01T23:59:59.000Z

    Monitoring activities were conducted to determine the distribution of radionuclides and hazardous chemicals present in ground water as a result of Hanford Site operations and, whenever possible, relate the distribution of these constituents to Site operations. A total of 720 wells were sampled during 1992 by all Hanford ground-water monitoring activities. The Ground-Water Surveillance Project prepared water-table maps of DOE`s Hanford Site for June 1992 from water-level elevations measured in 287 wells across the Hanford Site and outlying areas. These maps are used to infer ground-water flow directions and gradients for the interpretation of contaminant transport. Water levels beneath the 200 Areas decreased as much as 0.75 m (2.5 ft) between December 1991 and December 1992. Water levels in the Cold Creek Valley decreased approximately 0.5 m in that same period. The water table adjacent to the Columbia River along the Hanford Reach continues to respond significantly to fluctuations in river stage. These responses were observed in the 100 and 300 areas. The elevation of the ground-water mound beneath B Pond did not change significantly between December 1991 and December 1992. However, water levels from one well located at the center of the mound indicate a water-level rise of approximately 0.3 m (1 ft) during the last quarter of 1992. Water levels measured from unconfined aquifer wells north and east of the Columbia River in 1992 indicate that the primary source of recharge is from irrigation practices.

  7. Ground Penetrating Radar in Hydrogeophysics

    SciTech Connect (OSTI)

    Hubbard, Susan; Lambot, S.; Binley, A.; Slob, E.; Hubbard, S.

    2008-01-15T23:59:59.000Z

    To meet the needs of a growing population and to provide us with a higher quality of life, increasing pressures are being placed on our environment through the development of agriculture, industry, and infrastructures. Soil erosion, groundwater depletion, salinization, and pollution have been recognized for decades as major threats to ecosystems and human health. More recently, the progressive substitution of fossil fuels by biofuels for energy production and climate change have been recognized as potential threats to our water resources and sustained agricultural productivity. The vadose zone mediates many of the processes that govern water resources and quality, such as the partition of precipitation into infiltration and runoff , groundwater recharge, contaminant transport, plant growth, evaporation, and energy exchanges between the Earth's surface and its atmosphere. It also determines soil organic carbon sequestration and carbon-cycle feedbacks, which could substantially impact climate change. The vadose zone's inherent spatial variability and inaccessibility precludes direct observation of the important subsurface processes. In a societal context where the development of sustainable and optimal environmental management strategies has become a priority, there is a strong prerequisite for the development of noninvasive characterization and monitoring techniques of the vadose zone. In particular, hydrogeophysical approaches applied at relevant scales are required to appraise dynamic subsurface phenomena and to develop optimal sustainability, exploitation, and remediation strategies. Among existing geophysical techniques, ground penetrating radar (GPR) technology is of particular interest for providing high-resolution subsurface images and specifically addressing water-related questions. Ground penetrating radar is based on the transmission and reception of VHF-UHF (30-3000 MHz) electromagnetic waves into the ground, whose propagation is determined by the soil electromagnetic properties and their spatial distribution. As the dielectric permittivity of water overwhelms the permittivity of other soil components, the presence of water in the soil principally governs GPR wave propagation. Therefore, GPR-derived dielectric permittivity is usually used as surrogate measure for soil water content. In the areas of unsaturated zone hydrology and water resources, GPR has been used to identify soil stratigraphy, to locate water tables, to follow wetting front movement, to estimate soil water content, to assist in subsurface hydraulic parameter identification, to assess soil salinity, and to support the monitoring of contaminants. The purpose of this special section of the Vadose Zone Journal is to present recent research advances and applications of GPR in hydrogeophysics, with a particular emphasis on vadose zone investigations. This special section includes contributions presented at the European Geosciences Union General Assembly 2006 (EGU 2006, Vienna, Austria) and the 11th International Conference on Ground Penetrating Radar (GPR 2006, Columbus, OH). The studies presented here deal with a wide range of surface and borehole GPR applications, including GPR sensitivity to contaminant plumes, new methods for soil water content determination, three-dimensional imaging of the subsurface, time-lapse monitoring of hydrodynamic events and inversion techniques for soil hydraulic properties estimation, and joint interpretation of GPR and electric resistivity tomography (ERT) data.

  8. Remote grounding device for subterranean power systems

    SciTech Connect (OSTI)

    Wilson, D.P.

    1987-04-28T23:59:59.000Z

    A remote grounding device is described for subterranean power cable of an insulated conducting cable which comprises: a grounding module and a grounding mechanism; the grounding module is an assembly of a power buss, an insulation sheath, a reducing tap plug and an insulating receptacle cap. The power buss is intimately connected to the conducting cable by a means of an attachment. The reducing tap plug fits concentrically over the power buss and has a tubular probe path void contiguous and in-line to the power buss and a lip around the outer periphery of the reducing tap plug. The insulating receptacle cap covers the tubular void. The insulating sheath covers and holds reducing tap plug and power cable by a multiplicity of locking means and a grounding mechanism assembly of a frame, a probe, a power drive means, a grounding means, a handle means.

  9. Natural restoration of ground water in UCG

    SciTech Connect (OSTI)

    Humenick, M.J.; Britton, L.N.; Mattox, C.F.

    1982-01-01T23:59:59.000Z

    Ground water contamination from underground coal gasification (UCG) has been documented at several field tests in Texas and Wyoming. However, monitoring data following the termination of gasification operations has shown that contaminant concentrations decrease with time, apparently because of natural processes. This research evaluates the probable natural mechanisms for the reduction of organic contaminant concentrations in ground water. Results indicated that biological degradation and adsorption could be a significant mechanism for removal of organics from ground waters. 12 refs.

  10. Proceedings of the ASME 2013 International Mechanical Engineering Congress & Exposition November 15-21, 2013, San Diego, USA

    E-Print Network [OSTI]

    Dasgupta, Partha

    , ground- source heat pumps and so on). Various decision-making ca- pabilities at the Energy Management4]. Furthermore, adaptive automated daylighting control sys- tems have immense potential to significantly reduce- tion and heat recovery ventilation; the design of such buildings involve a number of advanced elements

  11. Earth resistivity measurement near substation ground grids

    SciTech Connect (OSTI)

    Lodwig, S.G.; Mateja, S.A. [ComEd, Chicago, IL (United States)

    1996-11-01T23:59:59.000Z

    Proper substation grounding grid design requires good, accurate soil resistivity measurements. This data is essential to model the substation ground grid to design a safe ground grid with a satisfactory ground grid resistance at minimum cost. For substations with several decades of service, there is some concern that a grid may have deteriorated, been damaged during equipment installation or excavation, or that initial soil resistivity measurements were lost or may not have been correctly performed. Ground grid conductors change the substation surface voltage distribution. Any voltage measurements taken at the complete substation will also vary from the tests made without conductors present. During testing, current was injected in the soil by probes placed near the ground grid. The current tends to follow the ground grid conductors since copper is a far better conductor than the soil it is placed in. Resistance readings near grids will be lower than readings in undisturbed soil. Since computer models were unavailable for many years, analyzing the effect of the grid conductors on soil resistivity measurements was very difficult. As a result, soil resistivity measurements made close to substations were of little use to the engineer unless some means of correcting the measured values could be developed. This paper will present results of soil resistivity measurements near a substation ground grid before and after a ground grid has been installed and describes a means of calculating the undisturbed soil model.

  12. Category:Ground Electromagnetic Techniques | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here. Category:Conceptual Model Add.pngpage?source HistoryGround

  13. Evaluation of analytical methods to interpret ground deformations due to soft ground tunneling

    E-Print Network [OSTI]

    Zymnis, Despina M

    2009-01-01T23:59:59.000Z

    An in depth study was undertaken to evaluate the effectiveness of analytical solutions in describing ground movements induced by soft ground tunneling. The analytical solutions that were examined consider both isotropic ...

  14. Special Section on Ground Water Research in China Featured in This Issue of Ground Water

    E-Print Network [OSTI]

    Jiao, Jiu Jimmy

    of Ground Water by Xun Zhou1, Jiu J. Jiao2, and Mary P. Anderson3 Contained in this issue of Ground Water, Groundwater Resources and the Related Environ- Hydrogeologic Problems in China, Beijing: Seismological Press

  15. Ground water provides drinking water, irrigation for

    E-Print Network [OSTI]

    Saldin, Dilano

    Ground water provides drinking water, irrigation for crops and water for indus- tries. It is also connected to surface waters, and maintains the flow of rivers and streams and the level of wetlands- tion of those along Lake Michigan, most communi- ties, farms and industries still rely on ground water

  16. First conference on ground control problems in the Illinois Coal Basin: proceedings

    SciTech Connect (OSTI)

    Chugh, Y.P.; Van Besien, A. (eds.)

    1980-06-01T23:59:59.000Z

    The first conference on ground control problems in the Illinois Coal Basin was held at the Southern Illinois University at Carbondale, Illinois, August 22-24, 1979. Twenty-one papers from the proceedings have been entered individually into EDB; one had been entered previously from other sources. (LTN)

  17. Vertical Concentric Tube Ground Couoled Heat Exchangers V. C. Mei and S. K. Fischer*

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    to extract heat from or reject heat to the environment. The majority of heat pumps use ambient air of the air. Ground water is a better heat source/sink for heat pump application (due to its superior thermal exchangers for use in heat-pump applications is described. The experimental apparatus consists

  18. Radiation source

    DOE Patents [OSTI]

    Thode, Lester E. (Los Alamos, NM)

    1981-01-01T23:59:59.000Z

    A device and method for relativistic electron beam heating of a high-density plasma in a small localized region. A relativistic electron beam generator or accelerator produces a high-voltage electron beam which propagates along a vacuum drift tube and is modulated to initiate electron bunching within the beam. The beam is then directed through a low-density gas chamber which provides isolation between the vacuum modulator and the relativistic electron beam target. The relativistic beam is then applied to a high-density target plasma which typically comprises DT, DD, or similar thermonuclear gas at a density of 10.sup.17 to 10.sup.20 electrons per cubic centimeter. The target gas is ionized prior to application of the relativistic electron beam by means of a laser or other preionization source to form a plasma. Utilizing a relativistic electron beam with an individual particle energy exceeding 3 MeV, classical scattering by relativistic electrons passing through isolation foils is negligible. As a result, relativistic streaming instabilities are initiated within the high-density target plasma causing the relativistic electron beam to efficiently deposit its energy into a small localized region of the high-density plasma target.

  19. Scaling Considerations in Ground State Quantum Computation

    E-Print Network [OSTI]

    Ari Mizel; M. W. Mitchell; Marvin L. Cohen

    2000-07-02T23:59:59.000Z

    We study design challenges associated with realizing a ground state quantum computer. In such a computer, the energy gap between the ground state and first excited state must be sufficiently large to prevent disruptive excitations. Here, an estimate is provided of this gap as a function of computer size. We then address the problem of detecting the output of a ground state quantum computer. It is shown that the exponential detection difficulties that appear to be present at first can be overcome in a straightforward manner by small design changes.

  20. Proceedings of the National Groundwater National Ground Water Association Southwest focused ground water conference: Discussing the issue of MTBE and perchlorate in the ground water, Anaheim, CA, June 3-4, pp:87-90.

    E-Print Network [OSTI]

    ground water conference: Discussing the issue of MTBE and perchlorate in the ground water, Anaheim, CA

  1. Grounding linguistic analysis in control applications

    E-Print Network [OSTI]

    Branavan, Satchuthananthavale Rasiah Kuhan

    2012-01-01T23:59:59.000Z

    This thesis addresses the problem of grounding linguistic analysis in control applications, such as automated maintenance of computers and game playing. We assume access to natural language documents that describe the ...

  2. Above Ground Storage Tank (AST) Inspection Form

    E-Print Network [OSTI]

    Pawlowski, Wojtek

    Above Ground Storage Tank (AST) Inspection Form Petroleum Bulk Storage Form Facility Name.ehs.cornell.edu/env/bulk-material-storage/petroleum-bulk-storage/Documents/AST_Inspection_Form.pdf #12;

  3. Ground Water Protection Act (New Mexico)

    Broader source: Energy.gov [DOE]

    The purpose of the Ground Water Protection Act is to provide substantive provisions and funding mechanisms to the extent that funds are available to enable the state to take corrective action at...

  4. Building an entanglement measure on physical ground

    E-Print Network [OSTI]

    D. Teresi; A. Napoli; A. Messina

    2008-05-28T23:59:59.000Z

    We introduce on physical grounds a new measure of multipartite entanglement for pure states. The function we define is discriminant and monotone under LOCC and moreover can be expressed in terms of observables of the system.

  5. International Borders, Ground Water Flow, and Hydroschizophrenia

    E-Print Network [OSTI]

    Wolf, Aaron

    International Borders, Ground Water Flow, and Hydroschizophrenia by Todd Jarvis1,2, Mark Giordano3 of Geosciences, 104 Wilkinson Hall, Corvallis, OR 97331 2Corresponding author: todd.jarvis@oregonstate.edu 3

  6. Commonality of ground systems in launch operations

    E-Print Network [OSTI]

    Quinn, Shawn M

    2008-01-01T23:59:59.000Z

    NASA is examining the utility of requiring a certain degree of commonality in both flight and ground systems in the Constellation Program. While the benefits of commonality seem obvious in terms of minimizing upfront ...

  7. Ground rubber: Reactive permeable barrier sorption media

    SciTech Connect (OSTI)

    Kershaw, D.S.; Pamukcu, S. [Lehigh Univ., Bethlehem, PA (United States)

    1997-12-31T23:59:59.000Z

    The objective of this research was to examine the feasibility of using ground tire rubber as a sorbent media in reactive permeable barrier systems. Previous research by the current authors has demonstrated that tire rubber can sorb significant quantities of benzene, toluene, ethylbenzene and O-xylene from aqueous solutions. The current research was run to examine the usage rate of ground rubber in a packed bed reactor under specific contact times. In addition, desorption and repetitive sorption tests were run to determine the reversibility of the sorption process for ground tire rubber. These tests were run to determine the regeneration capacity of ground tire rubber. Results of the study show that the usage rates are greater than 50% with an empty bed contact times of 37 minutes, and minimal amounts of energy are needed to regenerate the tire rubber after use.

  8. A note on classical ground state energies

    E-Print Network [OSTI]

    Michael K. -H. Kiessling

    2009-05-28T23:59:59.000Z

    The pair-specific ground state energy of Newtonian N-body systems grows monotonically in N. This furnishes a whole family of simple new tests for minimality of putative ground state energies obtained through computer experiments. Inspection of several publically available lists of such computer-experimentally obtained putative ground state energies has yielded several dozen instances which failed (at least) one of these tests. Although the correct ground state energy is not revealed by this method, it does yield a better upper bound on it than the experimentally found value whenever the latter fails a monotonicity test. The surveyed N-body systems include in particular N point charges with 2- or 3-dimensional Coulomb pair interactions, placed either on the unit 2-sphere or on a 2-torus (a.k.a. Thomson, Fekete, or Riesz problems).

  9. Journal of Educational Psychology Applying Grounded Coordination Challenges to Concrete

    E-Print Network [OSTI]

    Journal of Educational Psychology Applying Grounded Coordination Challenges to Concrete Learning, M. I. (2013, August 19). Applying Grounded Coordination Challenges to Concrete Learning Materials.1037/a0034098 #12;Applying Grounded Coordination Challenges to Concrete Learning Materials: A Study

  10. Ground water protection management program plan

    SciTech Connect (OSTI)

    Not Available

    1994-02-01T23:59:59.000Z

    U.S. Department of Energy (DOE) Order 5400.1 requires the establishment of a ground water protection management program to ensure compliance with DOE requirements and applicable federal, state, and local laws and regulations. The Uranium Mill Tailings Remedial Action (UMTRA) Project Office was prepared this Ground Water Protection Management Program Plan (ground water protection plan) whose scope and detail reflect the program`s significance and address the seven activities required in DOE Order 5400.1, Chapter III, for special program planning. This ground water protection plan highlights the methods designed to preserve, protect, and monitor ground water resources at UMTRA Project processing and disposal sites. The plan includes an overview of the remedial action status at the 24 designated processing sites and identifies technical guidance documents and site-specific documents for the UMTRA Project ground water protection management program. In addition, the plan addresses the general information required to develop a water resources protection strategy at the permanent disposal sites. Finally, the plan describes ongoing activities that are in various stages of development at UMTRA Project sites.

  11. Extreme-UV electrical discharge source

    DOE Patents [OSTI]

    Fornaciari, Neal R. (Tracey, CA); Nygren, Richard E. (Los Ranchos de Albuquerque, NM); Ulrickson, Michael A. (Albuquerque, NM)

    2002-01-01T23:59:59.000Z

    An extreme ultraviolet and soft x-ray radiation electric capillary discharge source that includes a boron nitride housing defining a capillary bore that is positioned between two electrodes one of which is connected to a source of electric potential can generate a high EUV and soft x-ray radiation flux from the capillary bore outlet with minimal debris. The electrode that is positioned adjacent the capillary bore outlet is typically grounded. Pyrolytic boron nitride, highly oriented pyrolytic boron nitride, and cubic boron nitride are particularly suited. The boron nitride capillary bore can be configured as an insert that is encased in an exterior housing that is constructed of a thermally conductive material. Positioning the ground electrode sufficiently close to the capillary bore outlet also reduces bore erosion.

  12. The prediction of the effectiveness of interceptor trenches in the remediation of ground-water contamination by petroleum hydrocarbons

    E-Print Network [OSTI]

    Mast, Mary Katherine

    1991-01-01T23:59:59.000Z

    means of ground-water remediation. Ground water at all three sites is contaminated by petroleum hydrocarbons. Sites B and C are service stations in which the source of contamination has been leaky underground storage tanks. Site C was chosen based... pumping from the interceptor trench on the surrounding observation wells. Slug tests were also performed at Site A previously by others to calculate transmissivity. Data from Site C was obtained by a consulting firm hired to provide remedial action...

  13. A model of ATL ground motion for storage rings

    E-Print Network [OSTI]

    Wolski, Andrzej; Walker, Nicholas J.

    2003-01-01T23:59:59.000Z

    A MODEL OF ATL GROUND MOTION FOR STORAGE RINGS A. WolskiMODEL OF ATL GROUND MOTION FOR STORAGE RINGS* A. Wolski # ,

  14. Department of Veterans Affairs, FONSI - Ground mounted solar...

    Office of Environmental Management (EM)

    Ground mounted solar photovoltaic power at San Joaquin National Cemetery Department of Veterans Affairs, FONSI - Ground mounted solar photovoltaic power at San Joaquin National...

  15. Fuel Cell Council Working Group on Aircraft and Aircraft Ground...

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

    Council Working Group on Aircraft and Aircraft Ground Support Fuel Cell Applications Fuel Cell Council Working Group on Aircraft and Aircraft Ground Support Fuel Cell Applications...

  16. GROUND PLANE INSULATION FAILURE IN THE FIRST TPC SUPERCONDUCTING COIL

    E-Print Network [OSTI]

    Green, M.A.

    2010-01-01T23:59:59.000Z

    is WIUUTEO GROUND PLANE INSULATION FAILURE IN THE FIRST TPCOn August 27, 1980, an insulation failure occurred dt-ringby a failure uf ground plane insulation. ACKNOWLEDGMENTS The

  17. Ground Test Facility for Propulsion and Power Modes of Nuclear Engine Operation

    SciTech Connect (OSTI)

    Michael, WILLIAMS

    2004-11-22T23:59:59.000Z

    Existing DOE Ground Test Facilities have not been used to support nuclear propulsion testing since the Rover/NERVA programs of the 1960's. Unlike the Rover/NERVA programs, DOE Ground Test facilities for space exploration enabling nuclear technologies can no longer be vented to the open atmosphere. The optimal selection of DOE facilities and accompanying modifications for confinement and treatment of exhaust gases will permit the safe testing of NASA Nuclear Propulsion and Power devices involving variable size and source nuclear engines for NASA Jupiter Icy Moon Orbiter (JIMO) and Commercial Space Exploration Missions with minimal cost, schedule and environmental impact. NASA site selection criteria and testing requirements are presented.

  18. Rock magnetic investigation of possible sources of the Bangui magnetic anomaly1 , M., Quesnel2*

    E-Print Network [OSTI]

    Boyer, Edmond

    Rock magnetic investigation of possible sources of the Bangui magnetic anomaly1 2 Ouabego1,2 , M slices of such28 metamorphic rocks, or by an iron-rich mafic source, or by a combination of these two29 source using constraints19 from satellite and ground magnetic field measurements, as well as from surface

  19. A THERMIE PROGRAMME ACTION THERMIE Daylighting in Buildings The European Commission Directorate-General for Energy (DGXVII) R.E. The THERMIE Programme

    E-Print Network [OSTI]

    unknown authors

    This is an important European Community instrument. It is designed to promote greater use of European energy technologies. THERMIE is a major EC initiative, it will run for five years (1990-94) and it is estimated that the EC contribution during this period will amount to 700 million ECU. The main aims of THERMIE are to: promote innovative energy technologies; disseminate information on these technologies; encourage greater use of new and renewable energy sources; improve energy efficiency; improve environmental protection. THERMIE has been developed from previous EC programmes and provides enhanced provision for:

  20. 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

  1. Module Grounding Module grounding still continues to be an issue with many

    E-Print Network [OSTI]

    Johnson, Eric E.

    by leaps and bounds. New module and inverter manufacturers are entering the market, and the number of PV that will be used with transformerless inverters, and those systems will not have a grounded PV DC conductor. (See so, as PV installers attempt to reduce the time and materials required to ground modules

  2. Mimicking Time Evolution within a Quantum Ground State: Ground-State Quantum Computation, Cloning, and Teleportation

    E-Print Network [OSTI]

    Ari Mizel

    2003-12-09T23:59:59.000Z

    Ground-state quantum computers mimic quantum mechanical time evolution within the amplitudes of a time-independent quantum state. We explore the principles that constrain this mimicking. A no-cloning argument is found to impose strong restrictions. It is shown, however, that there is flexibility that can be exploited using quantum teleportation methods to improve ground-state quantum computer design.

  3. Detection of 6 November 1997 Ground Level Event by Milagrito

    E-Print Network [OSTI]

    Atkins, R; Berley, D; Chen, M L; Coyne, D G; Delay, R S; Dingus, B L; Dorfan, D E; Ellsworth, R W; Evans, D; Falcone, A D; Fleysher, L; Fleysher, R; Gisler, G; Goodman, J A; Haines, T J; Hoffman, C M; Hugenberger, S; Kelley, L A; Leonor, I; Macri, J R; McConnell, M; McCullough, J F; McEnery, J E; Miller, R S; Mincer, A I; Morales, M F; N閙ethy, P; Ryan, J M; Schneider, M; Shen, B; Shoup, A L; Sinnis, G; Smith, A J; Sullivan, G W; Thompson, T N; T黰er, T O; Wang, K; Wascko, M O; Westerhoff, S; Williams, D A; Yang, T; Yodh, G B

    1999-01-01T23:59:59.000Z

    Solar Energetic Particles from the 6 November 1997 solar flare/CME(coronal mass ejection) with energies exceeding 10 GeV have been detected by Milagrito, a prototype of the Milagro Gamma Ray Observatory. While particle acceleration beyond 1 GeV at the Sun is well established, few data exist for protons or ions beyond 10 GeV. The Milagro observatory, a ground based water Cherenkov detector designed for observing very high energy gamma ray sources, can also be used to study the Sun. Milagrito, which operated for approximately one year in 1997/98, was sensitive to solar proton and neutron fluxes above ~5- 10 GeV. Milagrito operated in a scaler mode, which was primarily sensitive to muons, low energy photons, and electrons, and the detector operated in a mode sensitive to showers and high zenith angle muons. In its scaler mode, Milagrito registered a rate increase coincident with the 6 November 1997 ground level event observed by Climax and other neutron monitors. A preliminary analysis suggests the presence of >...

  4. Detection of 6 November 1997 Ground Level Event by Milagrito

    E-Print Network [OSTI]

    R. Atkins; W. Benbow; D. Berley; M. -L. Chen; D. G. Coyne; R. S. Delay; B. L. Dingus; D. E. Dorfan; R. W. Ellsworth; D. Evans; A. Falcone; L. Fleysher; R. Fleysher; G. Gisler; J. A. Goodman; T. J. Haines; C. M. Hoffman; S. Hugenberger; L. A. Kelley; I. Leonor; J. Macri; M. McConnell; J. F. McCullough; J. E. McEnery; R. S. Miller; A. I. Mincer; M. F. Morales; P. Nemethy; J. M. Ryan; M. Schneider; B. Shen; A. Shoup; G. Sinnis; A. J. Smith; G. W. Sullivan; T. N. Thompson; O. T. Tumer; K. Wang; M. O. Wascko; S. Westerhoff; D. A. Williams; T. Yang; G. B. Yodh

    1999-06-24T23:59:59.000Z

    Solar Energetic Particles from the 6 November 1997 solar flare/CME(coronal mass ejection) with energies exceeding 10 GeV have been detected by Milagrito, a prototype of the Milagro Gamma Ray Observatory. While particle acceleration beyond 1 GeV at the Sun is well established, few data exist for protons or ions beyond 10 GeV. The Milagro observatory, a ground based water Cherenkov detector designed for observing very high energy gamma ray sources, can also be used to study the Sun. Milagrito, which operated for approximately one year in 1997/98, was sensitive to solar proton and neutron fluxes above ~5- 10 GeV. Milagrito operated in a scaler mode, which was primarily sensitive to muons, low energy photons, and electrons, and the detector operated in a mode sensitive to showers and high zenith angle muons. In its scaler mode, Milagrito registered a rate increase coincident with the 6 November 1997 ground level event observed by Climax and other neutron monitors. A preliminary analysis suggests the presence of >10 GeV particles.

  5. The ground state energy at unitarity

    E-Print Network [OSTI]

    Dean Lee

    2008-07-28T23:59:59.000Z

    We consider two-component fermions on the lattice in the unitarity limit. This is an idealized limit of attractive fermions where the range of the interaction is zero and the scattering length is infinite. Using Euclidean time projection, we compute the ground state energy using four computationally different but physically identical auxiliary-field methods. The best performance is obtained using a bounded continuous auxiliary field and a non-local updating algorithm called hybrid Monte Carlo. With this method we calculate results for 10 and 14 fermions at lattice volumes 4^3, 5^3, 6^3, 7^3, 8^3 and extrapolate to the continuum limit. For 10 fermions in a periodic cube, the ground state energy is 0.292(12) times the ground state energy for non-interacting fermions. For 14 fermions the ratio is 0.329(5).

  6. Ground-state cooling of a trapped ion using long-wavelength radiation

    E-Print Network [OSTI]

    S. Weidt; J. Randall; S. C. Webster; E. D. Standing; A. Rodriguez; A. E. Webb; B. Lekitsch; W. K. Hensinger

    2015-01-07T23:59:59.000Z

    We demonstrate ground-state cooling of a trapped ion using long-wavelength radiation. This is a powerful tool for the implementation of quantum operations, where long-wavelength radiation instead of lasers is used for motional quantum state engineering. We measure a mean phonon number of $\\overline{n} = 0.13(4)$ after sideband cooling, corresponding to a ground-state occupation probability of 88(7)\\%. After preparing in the vibrational Fock state $\\left|n=0\\right\\rangle$, we implement sideband Rabi oscillations which last for more than 10 ms, demonstrating the long coherence time of our system. We also use the ability to ground-state cool to accurately measure the motional heating rate and report a reduction by almost two orders of magnitude compared to our previously measured result, which we attribute to carefully eliminating sources of electrical noise in the system.

  7. Ground-state cooling of a trapped ion using long-wavelength radiation

    E-Print Network [OSTI]

    Weidt, S; Webster, S C; Standing, E D; Rodriguez, A; Webb, A E; Lekitsch, B; Hensinger, W K

    2015-01-01T23:59:59.000Z

    We demonstrate ground-state cooling of a trapped ion using long-wavelength radiation. This is a powerful tool for the implementation of quantum operations, where long-wavelength radiation instead of lasers is used for motional quantum state engineering. We measure a mean phonon number of $\\overline{n} = 0.13(4)$ after sideband cooling, corresponding to a ground-state occupation probability of 88(7)\\%. After preparing in the vibrational Fock state $\\left|n=0\\right\\rangle$, we implement sideband Rabi oscillations which last for more than 10 ms, demonstrating the long coherence time of our system. We also use the ability to ground-state cool to accurately measure the motional heating rate and report a reduction by almost two orders of magnitude compared to our previously measured result, which we attribute to carefully eliminating sources of electrical noise in the system.

  8. Ground Control for Emplacement Drifts for SR

    SciTech Connect (OSTI)

    Y. Sun

    2000-04-07T23:59:59.000Z

    This analysis demonstrates that a satisfactory ground control system can be designed for the Yucca Mountain site, and provides the technical basis for the design of ground support systems to be used in repository emplacement and non-emplacement drifts. The repository ground support design was based on analytical methods using acquired computer codes, and focused on the final support systems. A literature review of case histories, including the lessons learned from the design and construction of the ESF, the studies on the seismic damages of underground openings, and the use of rock mass classification systems in the ground support design, was conducted (Sections 6.3.4 and 6.4). This review provided some basis for determining the inputs and methodologies used in this analysis. Stability of the supported and unsupported emplacement and non-emplacement drifts was evaluated in this analysis. The excavation effects (i.e., state of the stress change due to excavation), thermal effects (i.e., due to heat output from waste packages), and seismic effects (i.e., from potential earthquake events) were evaluated, and stress controlled modes of failure were examined for two in situ stress conditions (k_0=0.3 and 1.0) using rock properties representing rock mass categories of 1 and 5. Variation of rock mass units such as the non-lithophysal (Tptpmn) and lithophysal (Tptpll) was considered in the analysis. The focus was on the non-lithophysal unit because this unit appears to be relatively weaker and has much smaller joint spacing. Therefore, the drift stability and ground support needs were considered to be controlled by the design for this rock unit. The ground support systems for both emplacement and non-emplacement drifts were incorporated into the models to assess their performance under in situ, thermal, and seismic loading conditions. Both continuum and discontinuum modeling approaches were employed in the analyses of the rock mass behavior and in the evaluation of the stability of the openings. No credit or account was given for the initial ground support in modeling the final ground support systems for both emplacement and non-emplacement drifts in this analysis.

  9. Photovoltaic module mounting clip with integral grounding

    DOE Patents [OSTI]

    Lenox, Carl J.

    2010-08-24T23:59:59.000Z

    An electrically conductive mounting/grounding clip, usable with a photovoltaic (PV) assembly of the type having an electrically conductive frame, comprises an electrically conductive body. The body has a central portion and first and second spaced-apart arms extending from the central portion. Each arm has first and second outer portions with frame surface-disrupting element at the outer portions.

  10. GROUND-BASED FACILITIES REVIEW CONSULTATIVE DOCUMENT

    E-Print Network [OSTI]

    Crowther, Paul

    has been withdrawal from the AAO and significant reduction in the running costs at ING and JAC the benefits of joining ESO. Initially the UK decided to enter the 8-metre era by joining the Gemini wavebands, and needing both space and ground-based facilities to achieve new science goals. It also stresses

  11. Selenium in Oklahoma ground water and soil

    SciTech Connect (OSTI)

    Atalay, A.; Vir Maggon, D.

    1991-03-30T23:59:59.000Z

    Selenium with a consumption of 2 liters per day (5). The objectives of this study are: (1) to determine the concentrations of Se in Oklahoma ground water and soil samples. (2) to map the geographical distribution of Se species in Oklahoma. (3) to relate groundwater depth, pH and geology with concentration of Se.

  12. Electrolytes for power sources

    DOE Patents [OSTI]

    Doddapaneni, N.; Ingersoll, D.

    1995-01-03T23:59:59.000Z

    Electrolytes are disclosed for power sources, particularly alkaline and acidic power sources, comprising benzene polysulfonic acids and benzene polyphosphonic acids or salts of such acids. 7 figures.

  13. Electrolytes for power sources

    DOE Patents [OSTI]

    Doddapaneni, Narayan (Albuquerque, NM); Ingersoll, David (Albuquerque, NM)

    1995-01-01T23:59:59.000Z

    Electrolytes for power sources, particularly alkaline and acidic power sources, comprising benzene polysulfonic acids and benzene polyphosphonic acids or salts of such acids.

  14. System for detecting and limiting electrical ground faults within electrical devices

    DOE Patents [OSTI]

    Gaubatz, Donald C. (Cupertino, CA)

    1990-01-01T23:59:59.000Z

    An electrical ground fault detection and limitation system for employment with a nuclear reactor utilizing a liquid metal coolant. Elongate electromagnetic pumps submerged within the liquid metal coolant and electrical support equipment experiencing an insulation breakdown occasion the development of electrical ground fault current. Without some form of detection and control, these currents may build to damaging power levels to expose the pump drive components to liquid metal coolant such as sodium with resultant undesirable secondary effects. Such electrical ground fault currents are detected and controlled through the employment of an isolated power input to the pumps and with the use of a ground fault control conductor providing a direct return path from the affected components to the power source. By incorporating a resistance arrangement with the ground fault control conductor, the amount of fault current permitted to flow may be regulated to the extent that the reactor may remain in operation until maintenance may be performed, notwithstanding the existence of the fault. Monitors such as synchronous demodulators may be employed to identify and evaluate fault currents for each phase of a polyphase power, and control input to the submerged pump and associated support equipment.

  15. Baseline risk assessment of ground water contamination at the Monument Valley uranium mill tailings site Cane Valley, Arizona

    SciTech Connect (OSTI)

    NONE

    1996-03-01T23:59:59.000Z

    The U.S. Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project consists of the Surface Project (Phase I) and the Ground Water Project (Phase II). Under the UMTRA Surface Project, tailings, radioactive contaminated soil, equipment, and materials associated with the former uranium ore processing at UMTRA Project sites are placed into disposal cells. The cells are designed to reduce radon and other radiation emissions and to minimize further contamination of ground water. Surface cleanup at the Monument Valley UMTRA Project site near Cane Valley, Arizona, was completed in 1994. The Ground Water Project evaluates the nature and extent of ground water contamination that resulted from the uranium ore processing activities. The Ground Water Project is in its beginning stages. Human health may be at risk from exposure to ground water contaminated by uranium ore processing. Exposure could occur by drinking water pumped out of a hypothetical well drilled in the contaminated areas. Adverse ecological and agricultural effects may also result from exposure to contaminated ground water. For example, livestock should not be watered with contaminated ground water. A risk assessment describes a source of contamination, how that contamination reaches people and the environment, the amount of contamination to which people or the ecological environment may be exposed, and the health or ecological effects that could result from that exposure. This risk assessment is a site-specific document that will be used to evaluate current and potential future impacts to the public and the environment from exposure to contaminated ground water. The results of this evaluation and further site investigations will be used to determine a compliance strategy to comply with the UMTRA ground water standards.

  16. Coupled reservoir-geomechanical analysis of CO2 injection and ground deformations at In Salah, Algeria

    E-Print Network [OSTI]

    Rutqvist, J.

    2010-01-01T23:59:59.000Z

    CO 2 sequestration; In Salah; geomechanics; ground surfaceCO 2 injection, geomechanics, and ground surface

  17. TEX-A-SYST: Reducing the Risk of Ground Water Contamination by Improving Petroleum Product Storage

    E-Print Network [OSTI]

    Harris, Bill L.; Hoffman, D.; Mazac Jr., F. J.; Kantor, A. S.

    1997-08-29T23:59:59.000Z

    Texas AgriLife Extension Service Petroleum Products Overview Storing liquid petroleum products, such as motor fuel and heating fuel, above ground or underground presents a potential threat to pub- lic health and the environment. Nearly one out... with Varying Permeability Land Surface Figure 1. Petroleum product seepage into soils. Source: Underground Tank Corrective Action Technologies, EPA/625/6-87-015, January 1987. filled. Overfill protection is either a warning device, such as, a buzzer or a...

  18. Advances in BNL's polarized ion source development

    SciTech Connect (OSTI)

    Alessi, J.; DeVito, B.; Herschcovitch, A.; Kponou, A.; Meitzler, C.

    1988-01-01T23:59:59.000Z

    Polarized protons have been accelerated in the AGS to 22/yield/ GeV. The polarized source presently used produces 30-40 ..mu..A of /rvec char/H/sup -/ at 75-80% polarization, in 500 ..mu..s pulses, 0.5 Hz. This is three orders of magnitude lower in intensity than normal H/sup -/ operation, and higher intensities are desired. There is a program in the AGS department to develop a higher intensity source. This is a ground state atomic beam source with an atomic beam cooled to 6 K, spin selection and focusing via a superconducting solenoid (shown) or a sextupole system, and an ionizer for /rvec char/H/sup -/ production based on the charge exchange of /rvec char/H/degree/ with D/sup -/. Work is in progress on all three components, and will be described in this paper. 6 refs., 7 figs.

  19. Sources of Water Surface water and groundwater are present throughout

    E-Print Network [OSTI]

    MacAdam, Keith

    Sources of Water Surface water and groundwater are present throughout Kentucky's 39,486 square miles. Surface water occurs as rivers, streams, ponds, lakes, and wetlands. Ground- water occurs underlain by soluble carbonate rocks (for example, limestone). Water Supply Approximately 49 inches

  20. Hydraulic pump with in-ground filtration and monitoring capability

    DOE Patents [OSTI]

    Hopkins, C.D.; Livingston, R.R.; Toole, W.R. Jr.

    1995-01-01T23:59:59.000Z

    A hydraulically operated pump is described for in-ground filtering and monitoring of wells or other fluid sources, including a hollow cylindrical pump housing with an inlet and an outlet, filtering devices positioned in the inlet and the outlet, a piston that fits slidably within the pump housing, and an optical cell in fluid communication with the pump housing. A conduit within the piston allows fluid communication between the exterior and one end of the piston. A pair of O-rings form a seal between the inside of the pump housing and the exterior of the piston. A flow valve positioned within the piston inside the conduit allows fluid to flow in a single direction. In operation, fluid enters the pump housing through the inlet, flows through the conduit and towards an end of the pump housing. The piston then makes a downward stroke closing the valve, thus forcing the fluid out from the pump housing into the optical cell, which then takes spectrophotometric measurements of the fluid. A spring helps return the piston back to its starting position, so that a new supply of fluid may enter the pump housing and the downward stroke can begin again. The pump may be used independently of the optical cell, as a sample pump to transport a sample fluid from a source to a container for later analysis.

  1. Hydraulic pump with in-ground filtration and monitoring capability

    DOE Patents [OSTI]

    Hopkins, Charles D. (Augusta, GA); Livingston, Ronald R. (Aiken, SC); Toole, Jr., William R. (Aiken, SC)

    1996-01-01T23:59:59.000Z

    A hydraulically operated pump for in-ground filtering and monitoring of ws or other fluid sources, including a hollow cylindrical pump housing with an inlet and an outlet, filtering devices positioned in the inlet and the outlet, a piston that fits slidably within the pump housing, and an optical cell in fluid communication with the pump housing. A conduit within the piston allows fluid communication between the exterior and one end of the piston. A pair of o-rings form a seal between the inside of the pump housing and the exterior of the piston. A flow valve positioned within the piston inside the conduit allows fluid to flow in a single direction. In operation, fluid enters the pump housing through the inlet, flows through the conduit and towards an end of the pump housing. The piston then makes a downward stroke closing the valve, thus forcing the fluid out from the pump housing into the optical cell, which then takes spectrophotometric measurements of the fluid. A spring helps return the piston back to its starting position, so that a new supply of fluid may enter the pump housing and the downward stroke can begin again. The pump may be used independently of the optical cell, as a sample pump to transport a sample fluid from a source to a container for later analysis.

  2. Measurement of Helium-3/Helium-4 Ratios in Soil Gas at the 618-11 Burial Ground

    SciTech Connect (OSTI)

    Olsen, Khris B; Dresel, P Evan; Evans, John C

    2001-10-31T23:59:59.000Z

    Seventy soil gas-sampling points were installed around the perimeter of the 618-11 Burial Ground, approximately 400 feet downgradient of well 699-13-3A, and in four transects downgradient of the burial ground to a maximum distance of 3,100 feet. Soil gas samples were collected and analyzed for helium-3/helium-4 ratios from these 70 points. Helium-3/helium-4 ratios determined from the soil gas sampling points showed significant enrichments, relative to ambient air helium-3 concentrations. The highest concentrations were located along the northern perimeter of the burial ground. Helium-3/helium-4 ratios (normalized to the abundances in ambient air) ranged from 1.0 to 62 around the burial ground. The helium-3/helium-4 ratios from the 4 transect downgradient of the burial ground ranged from 0.988 to 1.68. The helium-3/helium-4 ratios from around the burial ground suggest there is a vadose zone source of tritium along the north side of the burial ground.

  3. BROOKHAVEN NATIONAL Sealed Source

    E-Print Network [OSTI]

    Homes, Christopher C.

    BROOKHAVEN NATIONAL LABORATORY Sealed Source Contamination Incident October 13, 2011 #12;2 Cesium (Cs-137) Source Failure On September 28th @ ~1600 contamination event discovered Two Radiological Contamination was from a Cs-137 (265 micro-curie) "sealed source" used to test area radiation monitors. Source

  4. Ground Vibration and Siting of the Cryogenics Facility for Cornell ERL J. Welch, Cornell U., Ithaca NY

    E-Print Network [OSTI]

    ERL 02-3 1 Ground Vibration and Siting of the Cryogenics Facility for Cornell ERL Prototype J of extremely sensitive superconducting RF cavities and the noisy and powerful motors and compressors used cultural noise sources will dominate over those produced by the cryogenic compressors. Siting further away

  5. Ground Vibration and Siting of the Cryogenics Facility for Cornell ERL J. Welch, Cornell U., Ithaca NY

    E-Print Network [OSTI]

    ERL 02颅3 1 Ground Vibration and Siting of the Cryogenics Facility for Cornell ERL Prototype J of extremely sensitive superconducting RF cavities and the noisy and powerful motors and compressors used the cryoplant the local cultural noise sources will dominate over those produced by the cryogenic compressors

  6. Ground motion data for International Collider models

    SciTech Connect (OSTI)

    Volk, J.T.; LeBrun, P.; Shiltsev, V.; Singatulin, S.; /Fermilab

    2007-11-01T23:59:59.000Z

    The proposed location for the International Linear Collider (ILC) in the Americas region is Fermilab in Batavia Illinois. If built at this location the tunnels would be located in the Galena Platteville shale at a depth of 100 or more meters below the surface. Studies using hydro static water levels and seismometers have been conducted in the MINOS hall and the LaFrange Mine in North Aurora Illinois to determine the level of ground motion. Both these locations are in the Galena Platteville shale and indicate the typical ground motion to be expected for the ILC. The data contains both natural and cultural noise. Coefficients for the ALT law are determined. Seismic measurements at the surface and 100 meters below the surface are presented.

  7. Thermal ground state and nonthermal probes

    E-Print Network [OSTI]

    Grandou, Thierry

    2015-01-01T23:59:59.000Z

    The Euclidean formulation of SU(2) Yang-Mills thermodynamics admits periodic, (anti)selfdual solutions to the fundamental, classical equation of motion which possess one unit of topological charge: (anti)calorons. A spatial coarse graining over the central region in a pair of such localised field configurations with trivial holonomy generates an inert adjoint scalar field $\\phi$, effectively describing the pure quantum part of the thermal ground state in the induced quantum field theory. The latter's local vertices are mediated by just-not-resolved (anti)caloron centers of action $\\hbar$. This is the basic reason for a rapid convergence of the loop expansion of thermodynamical quantities, polarization tensors, etc., their effective loop momenta being severely constrained in entirely fixed and physical unitary-Coulomb gauge. Here we show for the limit of zero holonomy how (anti)calorons associate a temperature independent electric permittivity and magnetic permeability to the thermal ground state of SU(2)$_{\\t...

  8. Compression of ground-motion data

    SciTech Connect (OSTI)

    Long, J.W.

    1981-04-01T23:59:59.000Z

    Ground motion data has been recorded for many years at Nevada Test Site and is now stored on thousands of digital tapes. The recording format is very inefficient in terms of space on tape. This report outlines a method to compress the data onto a few hundred tapes while maintaining the accuracy of the recording and allowing restoration of any file to the original format for future use. For future digitizing a more efficient format is described and suggested.

  9. Ground motion: An introduction for accelerator builders

    SciTech Connect (OSTI)

    Fischer, G.E.

    1992-02-01T23:59:59.000Z

    In this seminar we will review some of the characteristics of the major classes of ground motion in order to determine whether their effects must be considered or place fundamental limits on the sitting and/or design of modern storage rings and linear colliders. The classes discussed range in frequency content from tidal deformation and tectonic motions through earthquakes and microseisms. Countermeasures currently available are briefly discussed.

  10. Response of continuous pipelines to tunnel induced ground deformations

    E-Print Network [OSTI]

    Ieronymaki, Evangelia S

    2011-01-01T23:59:59.000Z

    This thesis develops analytical solutions for estimating the bending moments and axial loads in a buried pipeline due to ground movements caused by tunnel construction in soft ground. The solutions combine closed-form, ...

  11. Ground-Coupled Heat Pump Applications and Case Studies

    E-Print Network [OSTI]

    Braud, H. J.

    1989-01-01T23:59:59.000Z

    The paper presents an overview of ground loops for space-conditioning heat pumps, hot water, ice machines, and water-cooled refrigeration in residential and commercial applications. In Louisiana, a chain of hamburger drive-ins uses total ground...

  12. The Design of Ground-Coupled Heat Pump Systems

    E-Print Network [OSTI]

    Parker, J. D.

    1985-01-01T23:59:59.000Z

    Ground-coupled heat pumps are being installed in increasing numbers due to proven performance and economy. The overall thermal resistance between the ground coupling fluid and a given type of surrounding soil is affected by pipe material, wall...

  13. The Design of Ground-Coupled Heat Pump Systems

    E-Print Network [OSTI]

    Parker, J. D.

    1985-01-01T23:59:59.000Z

    Ground-coupled heat pumps are being installed in increasing numbers due to proven performance and economy. The overall thermal resistance between the ground coupling fluid and a given type of surrounding soil is affected by pipe material, wall...

  14. Designing Teams of Unattended Ground Sensors Using Genetic Algorithms

    E-Print Network [OSTI]

    Wu, Annie S.

    Designing Teams of Unattended Ground Sensors Using Genetic Algorithms Ayse S. Yilmaz 1 and Brian N the sensing capabilities of a sensor suite. This work focuses on unattended ground sensor networks consisting

  15. Designing Teams of Unattended Ground Sensors Using Genetic Algorithms

    E-Print Network [OSTI]

    Wu, Annie S.

    Designing Teams of Unattended Ground Sensors Using Genetic Algorithms Ayse S. Yilmaz1 and Brian N of a sensor suite. This work focuses on unattended ground sensor networks consisting of teams of small

  16. Talking In Circles: Designing A Spatially-Grounded Audioconferencing Environment

    E-Print Network [OSTI]

    to become a popular medium for social interaction. Traditional chat environments, however, are limitedTalking In Circles: Designing A Spatially-Grounded Audioconferencing Environment Roy Rodenstein, a multimodal audioconferencing environment whose novel design emphasizes spatial grounding with the aim

  17. aircraft ground operations: Topics by E-print Network

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

    of a Tilt Rotor Aircraft Wake in Ground Effect, (May 19B2) Michael Louis Frey III, B. S. , Texas A... Frey, Michael Louis 2012-06-07 22 Aircraft Ground Traffic Optimization...

  18. Slotted Ground Structures and Their Applications to Various Microwave Components

    E-Print Network [OSTI]

    Jung, Dong

    2010-01-16T23:59:59.000Z

    This thesis discusses microstrip circuits and components with a slotted area on the ground plane. In recent years, various slot geometries have been placed on the ground plane with the purpose of reducing harmonics, producing frequency pass...

  19. Advanced Light Source control system

    SciTech Connect (OSTI)

    Magyary, S.; Chin, M.; Cork, C.; Fahmie, M.; Lancaster, H.; Molinari, P.; Ritchie, A.; Robb, A.; Timossi, C.

    1989-03-01T23:59:59.000Z

    The Advanced Light Source (ALS) is a third generation 1--2 GeV synchrotron radiation source designed to provide ports for 60 beamlines. It uses a 50 MeV electron linac and 1.5 GeV, 1 Hz, booster synchrotron for injection into a 1--2 GeV storage ring. Interesting control problems are created because of the need for dynamic closed beam orbit control to eliminate interaction between the ring tuning requirements and to minimize orbit shifts due to ground vibrations. The extremely signal sensitive nature of the experiments requires special attention to the sources of electrical noise. These requirements have led to a control system design which emphasizes connectivity at the accelerator equipment end and a large I/O bandwidth for closed loop system response. Not overlooked are user friendliness, operator response time, modeling, and expert system provisions. Portable consoles are used for local operation of machine equipment. Our solution is a massively parallel system with >120 Mbits/sec I/O bandwidth and >1500 Mips computing power. At the equipment level connections are made using over 600 powerful Intelligent Local Controllers (ILC-s) mounted in 3U size Eurocard slots using fiber-optic cables between rack locations. In the control room, personal computers control and display all machine variables at a 10 Hz rate including the scope signals which are collected though the control system. Commercially available software and industry standards are used extensively. Particular attention is paid to reliability, maintainability and upgradeability. 10 refs., 11 figs.

  20. Cooperative heat transfer and ground coupled storage system

    DOE Patents [OSTI]

    Metz, Philip D. (Rocky Point, NY)

    1982-01-01T23:59:59.000Z

    A cooperative heat transfer and ground coupled storage system wherein collected solar heat energy is ground stored and permitted to radiate into the adjacent ground for storage therein over an extended period of time when such heat energy is seasonally maximally available. Thereafter, when said heat energy is seasonally minimally available and has propagated through the adjacent ground a substantial distance, the stored heat energy may be retrieved by a circumferentially arranged heat transfer means having a high rate of heat transfer.

  1. Recommendation 195: Mitigation of Contamination in Bear Creek Burial Grounds

    Broader source: Energy.gov [DOE]

    The ORSSAB requests DOE provide possible remedial actions to mitigate releases of contamination from Bear Creek Burial Grounds.

  2. Ground Versus Unground Grain for Lactating Dairy Cows.

    E-Print Network [OSTI]

    Darnell, A. L. (Albert Laurie); Copeland, O. C. (Orlin Cephas)

    1936-01-01T23:59:59.000Z

    LIBRARY, A & hf COLLEGE, CAMPUS. TEXAS AGRICULTURAL EXPERIMENT STATION A. B. CONNER, DIFkECTOR COLLE~E STATION, BRAZOS COUNTY, TEXAS BULLETIN NO. 530 SEPTEMBER, 193 6 DIVISION OF DAIRY HUSBANDRY Ground Versus Unground Grain far Lactating...- bandry in cooperation with the Texas Agricultural Experiment Station. The double reversal method of feeding lactating dairy cows was used in comparing whole versus ground shelled corn, whole versus ground threshed oats, whole versus ground threshed...

  3. Impact of ground motion characterization on conservatism and variability in seismic risk estimates

    SciTech Connect (OSTI)

    Sewell, R.T.; Toro, G.R.; McGuire, R.K.

    1996-07-01T23:59:59.000Z

    This study evaluates the impact, on estimates of seismic risk and its uncertainty, of alternative methods in treatment and characterization of earthquake ground motions. The objective of this study is to delineate specific procedures and characterizations that may lead to less biased and more precise seismic risk results. This report focuses on sources of conservatism and variability in risk that may be introduced through the analytical processes and ground-motion descriptions which are commonly implemented at the interface of seismic hazard and fragility assessments. In particular, implication of the common practice of using a single, composite spectral shape to characterize motions of different magnitudes is investigated. Also, the impact of parameterization of ground motion on fragility and hazard assessments is shown. Examination of these results demonstrates the following. (1) There exists significant conservatism in the review spectra (usually, spectra characteristic of western U.S. earthquakes) that have been used in conducting past seismic risk assessments and seismic margin assessments for eastern U.S. nuclear power plants. (2) There is a strong dependence of seismic fragility on earthquake magnitude when PGA is used as the ground-motion characterization. When, however, magnitude-dependent spectra are anchored to a common measure of elastic spectral acceleration averaged over the appropriate frequency range, seismic fragility shows no important nor consistent dependence on either magnitude or strong-motion duration. Use of inelastic spectral acceleration (at the proper frequency) as the ground spectrum anchor demonstrates a very similar result. This study concludes that a single, composite-magnitude spectrum can generally be used to characterize ground motion for fragility assessment without introducing significant bias or uncertainty in seismic risk estimates.

  4. Regional Estimation of Total Recharge to Ground Water in Nebraska

    E-Print Network [OSTI]

    Szilagyi, Jozsef

    )over long periods of time when the potential change in ground water storage becomes negligible compared storage other than discharge to streams. One such loss term is evapotranspiration (ET) from ground waterRegional Estimation of Total Recharge to Ground Water in Nebraska by Jozsef Szilagyi1m2,F. Edwin

  5. Materialized community ground models for large-scale earthquake simulation

    E-Print Network [OSTI]

    Shewchuk, Jonathan

    Materialized community ground models for large-scale earthquake simulation Steven W. Schlosser to ground motion sim- ulations, in which ground model datasets are fully materi- alized into octress stored as a service techniques in which scientific computation and storage services become more tightly intertwined. 1

  6. DEVELOPMENTS IN GROUND WATER HYDROLOGY : AN OVERVIEW C. P. Kumar

    E-Print Network [OSTI]

    Kumar, C.P.

    . Surface water storage and ground water withdrawal are traditional engineering approaches which of storage and circulation as ground water. The large alluvial tract extending over 2000 km in length from which allows ground water storage in the weathered residium and its circulation in the underlying

  7. Basic Ground-Water Hydrology By RALPH C. HEATH

    E-Print Network [OSTI]

    Sohoni, Milind

    #12;Basic Ground-Water Hydrology By RALPH C. HEATH Prepared in cooperation with the North Carolina., 1983, Basic ground-water hydrology: U .S. Geological Survey Water-Supply Paper 2220, 86 p. Library of Congress Cataloging-in-Publications Data Heath, Ralph C . Basic ground-water hydrology (Geological Survey

  8. Cleanup Verification Package for the 618-2 Burial Ground

    SciTech Connect (OSTI)

    W. S. Thompson

    2006-12-28T23:59:59.000Z

    This cleanup verification package documents completion of remedial action for the 618-2 Burial Ground, also referred to as Solid Waste Burial Ground No. 2; Burial Ground No. 2; 318-2; and Dry Waste Burial Site No. 2. This waste site was used primarily for the disposal of contaminated equipment, materials and laboratory waste from the 300 Area Facilities.

  9. On Termination and Derivation Lengths for Ground Rewrite Systems

    E-Print Network [OSTI]

    Giesl, Juergen

    On Termination and Derivation Lengths for Ground Rewrite Systems Dieter Hofbauer 1 Universit篓at GH@theory.informatik.uni颅kassel.de Abstract. It is shown that for terminating ground term rewrite systems the length of derivations a suitable interpretation into the natural numbers. Terminating ground systems are not necessarily

  10. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

    E-Print Network [OSTI]

    Hong, Tainzhen

    2010-01-01T23:59:59.000Z

    Comparison of energy efficiency between variable refrigeranttheir superior energy efficiency. The variable refrigerantfew studies reporting the energy efficiency of VRF systems

  11. Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Final Scientific/Technical Report

    SciTech Connect (OSTI)

    Nick Rosenberry, Harris Companies

    2012-05-04T23:59:59.000Z

    A large centralized geothermal heat pump system was installed to provide ice making, space cooling, space heating, process water heating, and domestic hot water heating for an ice arena in Eagan Minnesota. This paper provides information related to the design and construction of the project. Additionally, operating conditions for 12 months after start-up are provided.

  12. Comparison of Aermod and ISCST3 Models for Particulate Emissions from Ground Level Sources

    E-Print Network [OSTI]

    Botlaguduru, Venkata Sai V.

    2010-07-14T23:59:59.000Z

    Emission factors (EFs) and results from dispersion models are key components in the air pollution regulatory process. The EPA preferred regulatory model changed from ISCST3 to AERMOD in November, 2007. Emission factors are used in conjunction...

  13. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

    E-Print Network [OSTI]

    Hong, Tainzhen

    2010-01-01T23:59:59.000Z

    dual compressor available on the market Compared with the selected building, a more energy efficient building will have lower space cooling and heating

  14. Nanofluids and a method of making nanofluids for ground source heat pumps and other applications

    DOE Patents [OSTI]

    Olson, John Melvin

    2013-11-12T23:59:59.000Z

    This invention covers nanofluids. Nanofluids are a combination of particles between 1 and 100 nanometers, a surfactant and the base fluid. The nanoparticles for this invention are either pyrogenic nanoparticles or carbon nanotubes. These nanofluids improve the heat transfer of the base fluids. The base fluid can be ethylene glycol, or propylene glycol, or an aliphatic-hydrocarbon based heat transfer fluid. This invention also includes a method of making nanofluids. No surfactant is used to suspend the pyrogenic nanoparticles in glycols.

  15. Source coding by efficient selection of ground-state clusters Demian Battaglia,1

    E-Print Network [OSTI]

    Battaglia, Demian

    by identifying a generalization of the SP equations which are indeed capable of addressing efficiently--with

  16. Air dispersion modeling of particulate matter from ground-level area sources

    E-Print Network [OSTI]

    Meister, Michael Todd

    2000-01-01T23:59:59.000Z

    State Air Pollution Regulatory Agencies (SAPRAs) often use dispersion modeling to predict downwind concentrations of particulate matter (PM) from a facility. As such, a facility may be granted or denied an operating permit ...

  17. Comparison of Aermod and ISCST3 Models for Particulate Emissions from Ground Level Sources

    E-Print Network [OSTI]

    Botlaguduru, Venkata Sai V.

    2010-07-14T23:59:59.000Z

    setup parameters .................................................................................. 32 Figure 6. Cattle feedlot with a TEOM sampler .............................................................. 35 Figure 7. Wind rose for feedlot E... when solar radiation > 800 W/m2 .................................................................... 54 Figure 20. Variance in AERMOD and ISCST3 concentrations as a function of wind speed...

  18. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

    E-Print Network [OSTI]

    Hong, Tainzhen

    2010-01-01T23:59:59.000Z

    movement toward net zero energy buildings, many technologiesmovement towards net zero energy buildings brings tremendous

  19. Advanced Ground Source Heat Pump Technology for Very-Low-Energy...

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

    Performer: Oak Ridge National Laboratory - Oak Ridge, TN Partners: -- ClimateMaster - Oklahoma City, OK -- Oklahoma State University - Stillwater, OK -- Oklahoma Gas & Electric -...

  20. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

    E-Print Network [OSTI]

    Hong, Tainzhen

    2010-01-01T23:59:59.000Z

    heat pump, and the energy consumption of the whole GSHP system given the accurate information of the building, GSHP system, weather data,