Sample records for vav system fan

  1. Building Pressure Control in VAV System with Relief Air Fan

    E-Print Network [OSTI]

    Pang, X.; Liu, M.; Zheng, B.

    2005-01-01T23:59:59.000Z

    , recently, Wang and Liu developed a motor power based fan airflow station., which determines the fan airflow using the measured fan motor power, the fan speed or control system command to VFD, and the in-situ fan motor power curve. Since the fan power... power can be obtained directly from VFD [5]. The motor power based fan airflow station method can be applied to the fan-tracking to perform a better building pressurization. The theory of the motor power based fan airflow station can be referred...

  2. Final Project Report: Self-Correcting Controls for VAV System Faults Filter/Fan/Coil and VAV Box Sections

    SciTech Connect (OSTI)

    Brambley, Michael R.; Fernandez, Nicholas; Wang, Weimin; Cort, Katherine A.; Cho, Heejin; Ngo, Hung; Goddard, James K.

    2011-05-01T23:59:59.000Z

    This report addresses original research by the Pacific Northwest National Laboratory for the California Institute for Energy and Environment on self-correcting controls for variable-air-volume (VAV) heating, ventilating and air-conditioning systems and focuses specifically on air handling and VAV box components of the air side of the system. A complete set of faults for these components was compiled and a fault mode analysis performed to understand the detectable symptoms of the faults and the chain of causation. A set of 26 algorithms was developed to facilitate the automatic correction of these faults in typical commercial VAV systems. These algorithms include training tests that are used during commissioning to develop models of normal system operation, passive diagnostics used to detect the symptoms of faults, proactive diagnostics used to diagnose the cause of a fault, and finally fault correction algorithms. Ten of the twenty six algorithms were implemented in a prototype software package that interfaces with a test bed facility at PNNL's Richland, WA, laboratory. Measurement bias faults were instigated in the supply-air temperature sensor and the supply-air flow meter to test the algorithms developed. The algorithms as implemented in the laboratory software correctly detected, diagnosed and corrected these faults. Finally, an economic and impact assessment was performed for the State of California for deployment of self-correcting controls. Assuming 15% HVAC energy savings and a modeled deployment profile, 3.1-5.8 TBu of energy savings are possible by year 15.

  3. Impacts of Static Pressure Reset on VAV System Air Leakage, Fan Power and Thermal Energy - Part I: Theoretical Model and Simulation

    E-Print Network [OSTI]

    Liu, M.; Feng, J.; Wang, Z.; Wu, L.; Zheng, K.; Pang, W.

    2007-01-01T23:59:59.000Z

    As for a variable air volume (VAV) system, the air duct static pressure is a typical control variable maintained by modulating supply fan speed. The static pressure equals to the summation of the duct pressure loss downstream of the sensor...

  4. Application of Wireless Sensor Network (WSN) Technologies in Optimal Static Pressure Reset in Variable Air Volume (VAV) System

    E-Print Network [OSTI]

    Zheng, K.; Li, H.; Yang, H.

    2007-01-01T23:59:59.000Z

    Optimization of the static pressure reset is always critical in the pursuit of maximum savings of fan power and thermal energy consumption in a VAV system. This paper theoretically investigated three static pressure reset methods, i.e. VAV terminal...

  5. Performance of ECM controlled VAV fan powered terminal units

    E-Print Network [OSTI]

    Cramlet, Andrew Charles

    2009-05-15T23:59:59.000Z

    Empirical performance models of fan airflow, primary airflow and power consumption were developed for series and parallel variable air volume fan powered terminal units. An experimental setup and test procedure were created to test the terminal...

  6. Impacts of Static Pressure Reset on VAV System Air Leakage, Fan Power and Thermal Energy - Part 2: Case Demonstration for a Typical Climate System

    E-Print Network [OSTI]

    Liu, M.; Zheng, K.; Wu, L.; Wang, Z.; Johnson, C.

    2007-01-01T23:59:59.000Z

    . In this part, a simulated air handling unit (AHU) system in Omaha NE is used to demonstrate the energy savings performance in one typical climate year. This AHU system has a static pressure reset system and two constant static pressure systems, one having...

  7. Commissioning and Diagnosis of VAV Air-Conditioning Systems

    E-Print Network [OSTI]

    Qin, J.; Wang, S.; Chan, C.; Xiao, F.

    2006-01-01T23:59:59.000Z

    This paper presents a fault detection and diagnosis (FDD) strategy based on system knowledge, qualitative states and object-oriented statistical process control (SPC) models for typical pressure-independent variable air volume (VAV) air...

  8. Performance of VAV Parallel Fan Powered Terminal Units: Experimental Results and Models

    E-Print Network [OSTI]

    Furr, J.; O'Neal, D.; Davis, M.; Bryant, J.; Cramlet, A.

    savings because the static pressure of the supply fan can be set lower than with parallel terminal unit systems. Elleson (1993) conducted a field study of cold air distri- bution systems with series and parallel fan powered terminal units in two separate... consumption, combin- ing the power of the supply fan and terminal units’ fans, was greater for series terminal unit systems. The simulations included a reduced supply static pressure for series units of 0.25 in. w.g. (62 Pa) less than the parallel units...

  9. Modeling of ECM Controlled Series Fan-powered VAV Terminal Units

    E-Print Network [OSTI]

    Yin, Peng

    2011-10-21T23:59:59.000Z

    Semi-empirical models for series fan-powered variable air volume terminal units (FPTUs) were developed based on models of the primary, plenum, fan airflow and the fan power consumption. The experimental setups and test procedures were developed...

  10. Impacts of Optimized Cold & Hot Deck Reset Schedules on Dual Duct VAV Systems - Theory and Model Simulation

    E-Print Network [OSTI]

    Liu, M.; Claridge, D. E.

    1998-01-01T23:59:59.000Z

    , is the fan power consumption, cfm is the air flow rate, and cfr&, is the designed air flow rate. In the base cases, the cold deck temperature is 55°F regardless of the ambient temperature. The hot deck temperature varies from 1 10°F to 75°F when... the ambient temperature increases from 40°F to 75OF. When the ambient temperature is lower than 40°F, the hot deck temperature remains at 1 10°F. Figure 5: Cold and Hot Deck Temperature Versus the Ambient Temperature for Base Case or Normal VAV System...

  11. VAV System Optimization through Continuous Commissioning in an Office Building

    E-Print Network [OSTI]

    Cho, Y.; Pang, X.; Liu, M.

    2007-01-01T23:59:59.000Z

    control Existing schedule: The existing control modulates the relief fan VFD to maintain the building pressure at its set-point (0.02 in.W.C). The relief damper is modulated according to the relief fan VFD speed. Table 3. Outside air damper.... AHU 2 serves the 3 rd , 4 th and 5 th floors. Both use similar control sequences, except that some parameter settings differ. The supply fans and relief fans have their respective VFD controls. One single-duct AHU system is shown in Figure 2...

  12. Continuous Commissioning® of a Single Fan Dual Duct System in an Office Building

    E-Print Network [OSTI]

    Dong, D.; Liu, M.

    2005-01-01T23:59:59.000Z

    in this case include installing VFD on the supply fan and return fan, updating all terminal boxes from CAV modes into VAV modes, resetting duct static pressure and supply air temperature, optimizing outside air intake and installing VFDs on chiller... are introduced in this paper. The technologies involve dual duct static pressure reset control, outside air intake in the morning, variable chilled water system control, and variable hot water system control. ESL-IC-10/05-15 1 CC ® has been achieving...

  13. Performance of VAV Fan Powered Terminal Units: Experimental Results and Models for Parallel Units

    E-Print Network [OSTI]

    Furr, J.; O'Neal, D.; Davis, M.; Bryant, J.; Cramlet, A.

    ©2008 ASHRAE 83 ABSTRACT Empirical models of airflow output, power consumption, and primary airflow were developed for parallel fan powered variable air volume terminal units at typical operating pres- sures. Both 8 in. (203 mm) and 12 in. (304 mm...) primary air inlet terminal units from three manufacturers were evaluated. Generalized models were developed from the experimental data with coefficients varying by size and manufacturer. Fan power and airflow data were collected at down- stream static...

  14. Integrated Demand Controlled Ventilation for Single Duct VAV System with Conference Rooms

    E-Print Network [OSTI]

    Yu, Y.; Liu, M.; Cho, Y.; Xu, K.

    2007-01-01T23:59:59.000Z

    Single duct variable air volume (VAV) systems are widely used in office buildings to achieve energy savings. It supplies proper amount of conditioned air to satisfy both the load and the ventilation requirements of each individual zone. To obtain...

  15. Performance of VAV Fan Powered Terminal Units: Experimental Results and Models for Series Units

    E-Print Network [OSTI]

    Furr, J.; O'Neal, D.; Davis, M.; Bryant, J.; Cramlet, A.

    ©2008 ASHRAE 91 ABSTRACT Empirical models of airflow output and power consump- tion were developed for series fan powered variable air volume terminal units at typical operating pressures. Terminal units with 8 in. (203 mm) and 12 in. (304 mm... pressures of 0.25 w.g. (63 Pa). Upstream static pressures ranged from 0.1 to 2.0 in w.g. (25 to 498 Pa). Data were collected at four different primary air damper positions and at four terminal unit fan speeds. Model variables included the RMS voltage...

  16. Stability limit of room air temperature of a VAV system

    SciTech Connect (OSTI)

    Matsuba, Tadahiko; Kamimura, Kazuyuki [Yamatake-Honeywell Co., Ltd., Tokyo (Japan). Building System Div.; Kasahara, Masato; Kimbara, Akiomi; Kurosu, Shigeru [Oyama National Coll. of Technology (Japan); Murasawa, Itaru; Hashimoto, Yukihiko [Tonets Corp., Tokyo (Japan). Engineering Project Dept.

    1998-12-31T23:59:59.000Z

    To control heating, ventilating, and air-conditioning (HVAC) systems, it has been necessary to accept an analog system controlled mainly by proportional-plus-integral-plus-derivative (PID) action. However, when conventional PID controllers are replaced with new digital controllers by selecting the same PID parameters as before, the control loops have often got into hunting phenomena, which result in undamped oscillations. Unstable control characteristics (such as huntings) are thought to be one of the crucial problems faced by field operators. The PID parameters must be carefully selected to avoid instabilities. In this study, a room space is simulated as a thermal system that is air-conditioned by a variable-air-volume (VAV) control system. A dynamic room model without infiltration or exfiltration, which is directly connected to a simple air-handling unit without an economizer, is developed. To explore the possible existence of huntings, a numerical system model is formulated as a bilinear system with time-delayed feedback, and a parametric analysis of the stability limit is presented. Results are given showing the stability region affected by the selection of control and system parameters. This analysis was conducted to help us tune the PID controllers for optimal HVAC control.

  17. VAV System Optimization through Continuous Commissioning in an Office Building 

    E-Print Network [OSTI]

    Cho, Y.; Pang, X.; Liu, M.

    2007-01-01T23:59:59.000Z

    boxes are controlled by pneumatic controllers. A VAV Terminal Box with reheat coil is shown in Figure 1. OutletInlet Thermo stat HI LO M Actuator (3~13 psig) Main Air (24 psig ) Main Air (24 psig ) Valve (5~9 psig) AO Introduction...

  18. Theoretical Study of a Novel Control Method of VAV Air-conditioning System Based on MATLAB

    E-Print Network [OSTI]

    Shi, Z.; Hu, S.; Wang, G.; Li, A.

    2006-01-01T23:59:59.000Z

    The main purpose of this study is to put forward a novel nonlinear feedback control strategy on controlling indoor air temperature by variable air volume. A dynamic model of a typical room for a VAV air-conditioning system is established...

  19. The Energy Saving Potential of Membrane-Based Enthalpy Recovery in Vav Systems for Commercial

    E-Print Network [OSTI]

    for Commercial Office Buildings Authors, Liping Wang, Philip Haves, and John Breshears Environmental Energy POTENTIAL OF MEMBRANE-BASED ENTHALPY RECOVERY IN VAV SYSTEMS FOR COMMERCIAL OFFICE BUILDINGS Liping Wang1 in EnergyPlus. A case using a desiccant wheel for energy recovery was also investigated for comparison

  20. Fan System Assessment- End User Training

    Office of Energy Efficiency and Renewable Energy (EERE)

    Optimizing industrial fan systems can take on many forms, but any fan optimization project must meet the needs of the process. This self-paced workshop highlights the benefits of fan system...

  1. Improved Air Volume Control Logic for VAV Systems

    E-Print Network [OSTI]

    Wei, G.; Claridge, D. E.; Sakuri, Y.; M. Liu

    2000-01-01T23:59:59.000Z

    is often set at a constant value, which is adequate to provide design flow to each room. This method consumes more fan power than necessary under partial load conditions. The fan speed or inlet guide vane can also be controlled based on the maximum damper...

  2. Integrated Demand Controlled Ventilation for Single Duct VAV System with Conference Rooms 

    E-Print Network [OSTI]

    Yu, Y.; Liu, M.; Cho, Y.; Xu, K.

    2007-01-01T23:59:59.000Z

    INTEGRATED DEMAND CONTROLLED VENTILATION FOR SINGLE DUCT VAV SYSTEM WITH CONFERENCE ROOMS Yuebin Yu Mingsheng Liu YoungHum Cho Ke Xu Graduate Student Professor of Architectural Engineering, PhD, PE Graduate.... The total OA intake of IDCV is obtained with the occupancy time ratio considered. The real time distribution of the occupancy and un-occupancy doesn’t much influence the overall calculation. With the amount of OA intake and the local BIN data...

  3. A Smart Logic for Conference Room Terminal Box of Single Duct VAV System 

    E-Print Network [OSTI]

    Yu, Y.; Xu, K.; Cho, Y.; Liu, M.

    2007-01-01T23:59:59.000Z

    A SMART LOGIC FOR CONFERENCE ROOM TERMINAL BOX OF SINGLE DUCT VAV SYSTEM Yuebin Yu Ke Xu YoungHum Cho Mingsheng Liu Graduate Student Graduate Student Graduate Student Professor of Architectural... in the conference room. The detailed calculation example for the parameters and the energy saving performance analysis based on air modeling are given in the other paper (Yuebin Yu, et al. 2007). The main principles of the operation logic are stated as follows...

  4. Energy Savings for Occupancy-Based Control (OBC) of Variable-Air-Volume (VAV) Systems

    SciTech Connect (OSTI)

    Zhang, Jian; Lutes, Robert G.; Liu, Guopeng; Brambley, Michael R.

    2013-01-24T23:59:59.000Z

    This study evaluates the savings potential of occupancy based control (OBC) for large office buildings with VAV terminal boxes installed.

  5. A New Approach to Commissioning of the VAV Control System

    E-Print Network [OSTI]

    Han, Z.; Xia, C.; Zhu, Y.; Xu, G.

    2006-01-01T23:59:59.000Z

    Commissioning of the HVAC system has been practiced in buildings for the purpose of energy conservation and performance optimization. Commissioning of the HVAC automation system should be paid more attention. In this paper, Objective Control Method...

  6. The Optimization of Control Parameters for VAV HVAC System Commissioning

    E-Print Network [OSTI]

    Song, S.; Maehara, K.; Sagara, N.

    2006-01-01T23:59:59.000Z

    One of the technical subjects in commissioning for HVAC system is to enhance control performance and time efficiency, while the tuning of the optimal parameters to control HVAC system takes much time and labor in particular. Therefore, we propose a...

  7. Automatic Commissioning of Multiple VAV Terminals

    E-Print Network [OSTI]

    Qin, J.; Wang, S.

    2004-01-01T23:59:59.000Z

    A site survey on a modern operating commercial building screened 261 ineffective VAV (Variable Air Volume) boxes (20.9% of the total boxes in the building) and summarized ten typical faults for VAV air-conditioning system(s) resulting in energy...

  8. Impacts of Optimized Cold & Hot Deck Reset Schedules on Dual Duct VAV Systems - Application and Results 

    E-Print Network [OSTI]

    Liu, M.; Abbas, M.; Veteto, B.; Claridge, D. E.; Bruner, H.

    1998-01-01T23:59:59.000Z

    reduced the chilled water energy consumption by 7,571 MMBtu/yr (18%) and 303 MWh/yr (18%) for the fan power. The estimated heating energy savings are 2,327 MMBtu/yr. The estimated annual cost savings are $75,040/yr. This paper presents the building and AHU...

  9. Fan System Assessment Tool | 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|6721Energy 3_adv_battery.pdf More Fact Sheet:BetaFederalFall: EnergyFanFan

  10. INFLUENCE OF SUPPLY AIR TEMPERATURE ON UNDERFLOOR AIR DISTRIBUTION (UFAD) SYSTEM ENERGY PERFORMANCE

    E-Print Network [OSTI]

    2012-01-01T23:59:59.000Z

    chilled water cooling coil, and supply fan. The fan is aspecify the VAV box cooling design supply air temperature (the underfloor supply plenum (thereby, reducing room cooling

  11. Optimization of supply air temperature reset schedule for a single duct VAV systems

    E-Print Network [OSTI]

    Fan, Wenshu

    2009-05-15T23:59:59.000Z

    In a single duct variable air volume (SDVAV) system, the supply air temperature is usually set as a constant value. Since this constant setpoint is selected to satisfy the maximum cooling load conditions, significant reheat will occur once...

  12. Training: Fan Systems | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMayDepartmentTest for PumpingThe|of Energy TopCharterCompressed AirFan

  13. Optimize the Supply Air Temperature Reset Schedule for a Single-Duct VAV System

    E-Print Network [OSTI]

    Wei, G.; Claridge, D. E.; Liu, M.

    2000-01-01T23:59:59.000Z

    to electrical power, etc. The influence of those parameters on optimal supply air temperature reset schedules has been briefly evaIuated in this paper. System operators should keep these factors in mind when they develop the optimal supply air temperature...

  14. A Case Study of Continuous Commissioning of the VAV System in China

    E-Print Network [OSTI]

    Xia, C.; Zhu, Y.; Chen, H.; Han, Z.; Xu, G.

    2006-01-01T23:59:59.000Z

    deviation is obtained, OCM (Objective Control Method) should be applied to diagnose the performance of control system, which is introduced in detail by Zheng Han[9]. If deviation is small or step 2 is completed, evaluation of indoor environment quality... Integrated analysis method for continuous Cx Lots of techniques, models and measurement methods can be found for step1 and step3, while research and application of OCM in this project has been explained by Zheng Han[9]. This paper mainly focuses...

  15. Improving Fan System Performance - A Sourcebook for Industry

    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),EnergyImprovement of the Lost FoamCooling and Improving Fan System

  16. Engine having hydraulic and fan drive systems using a single high pressure pump

    DOE Patents [OSTI]

    Bartley, Bradley E. (Manito, IL); Blass, James R. (Bloomington, IL); Gibson, Dennis H. (Chillicothe, IL)

    2000-01-01T23:59:59.000Z

    An engine comprises a hydraulic system attached to an engine housing that includes a high pressure pump and a hydraulic fluid flowing through at least one passageway. A fan drive system is also attached to the engine housing and includes a hydraulic motor and a fan which can move air over the engine. The hydraulic motor includes an inlet fluidly connected to the at least one passageway.

  17. A Semi-automated Commissioning Tool for VAV Air Handling Units

    E-Print Network [OSTI]

    and that faults in HVAC systems are widespread in commercial buildings. There is a lack of skilled people between the data analysis tool and the building energy management and control system (EMCS) is harderA Semi-automated Commissioning Tool for VAV Air Handling Units: Functional Test Analyzer 1 2 3 4 5

  18. Fan System Assessment Tool Introduction | 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|6721Energy 3_adv_battery.pdf More Fact Sheet:BetaFederalFall: EnergyFan

  19. Development of a Laboratory Verified Single-Duct VAV System Model with Fan Powered Terminal Units Optimized Using Computational Fluid Dynamics

    E-Print Network [OSTI]

    Davis, Michael A.

    2011-10-21T23:59:59.000Z

    the static pressure drop as air passed through the unit over the full operating range of the FPTU. Computational fluid dynamics (CFD) models of typical a FPTU were developed and used to investigate opportunities for optimizing the design of FPTUs. The CFD...

  20. Optimized Fan Control In Variable Air Volume HVAC Systems Using Static Pressure Resets: Strategy Selection and Savings Analysis

    E-Print Network [OSTI]

    Kimla, John

    2010-07-14T23:59:59.000Z

    The potential of static pressure reset (SPR) control to save fan energy in variable air volume HVAC systems has been well documented. Current research has focused on the creation of reset strategies depending on specific system features...

  1. Continuous Commissioning® of a Single Fan Dual Duct System in an Office Building 

    E-Print Network [OSTI]

    Dong, D.; Liu, M.

    2005-01-01T23:59:59.000Z

    The building has a total of 216 dual duct independent terminal boxes with air flow stations. The boxes are used for both interior and exterior zones. Pneumatic controllers and actuators are installed. A dual-duct single fan AHU serves the building... the setting. OPTIMAL CONTROL SCHEDULES The control schedule optimization includes terminal boxes, AHU, chillers, and boilers. All the pneumatic controls for the AHU system, except box controllers, are updated to DDC controls before the optimal...

  2. A Novel Procedure to Determine Optimal Air Static Pressure Set-points and Reset Schedules in VAV Air Handling Units

    E-Print Network [OSTI]

    Zhu, Y.; Liu, M.; Claridge, D. E.; Turner, W. D.; Powell, T.

    1998-01-01T23:59:59.000Z

    Air static pressure set-point or schedule for VAV AHLJ systems is one of the most crucial operational parameters for satisfy lug the building load, maintaining the room comfort level and saving energy costs. This paper presents a novel procedure...

  3. Feasibility Study: Ductless Hydronic Distribution Systems with Fan Coil Delivery

    SciTech Connect (OSTI)

    Springer, D.; Dakin, B.; Backman, C.

    2012-07-01T23:59:59.000Z

    The primary objectives of this study are to estimate potential energy savings relative to conventional ducted air distribution, and to identify equipment requirements, costs, and barriers with a focus on ductless hydronic delivery systems that utilize water-to-air terminal units in each zone. Results indicate that annual heating and cooling energy use can be reduced by up to 27% assuming replacement of the conventional 13 SEER heat pump and coil with a similarly rated air-to-water heat pump.

  4. Fan System Effects: How Fan Ductwork Design Impacts Overall System Efficiency and What the Approach Should be for Optimization

    E-Print Network [OSTI]

    Martin, V.

    aerodynamic capacity. For system components, an approach that has proved to be of significant value is to predict the flow pattern using computation fluid dynamics (CFD) modelling tools and in this process, the design can be tweaked until the designer finds...

  5. ECOSystem: Managing Energy as a First Class Operating System Heng Zeng, Xiaobo Fan, Carla Ellis, Alvin Lebeck, and Amin Vahdat

    E-Print Network [OSTI]

    Lebeck, Alvin R.

    ECOSystem: Managing Energy as a First Class Operating System Resource Heng Zeng, Xiaobo Fan focus in this paper is to investigate what role the oper- ating system can play in improving energy as a significant layer in the design of energy efficient computing systems [8]. It is now a widely held view

  6. Web-based Support Systems for Sustainable Communities W.N. Liu J.T. Yao L. Fan Y.Y. Yao X.D. Yang

    E-Print Network [OSTI]

    Yao, JingTao

    present an architecture of Web-based support systems for sustainable communities. The architectureWeb-based Support Systems for Sustainable Communities W.N. Liu J.T. Yao L. Fan Y.Y. Yao X.D. Yang,fan,yyao,yang}@cs.uregina.ca ABSTRACT This paper studies Web-based support systems for sustain- able communities. A sustainable

  7. Performance Optimization of a Fan System- Overcoming Impacts of Modified Design Criteria Due to Regulatory Requirements and Changed Operating Conditions

    E-Print Network [OSTI]

    Wroblewski, R. G.; Preis, F.; Smith, R.

    that was applied to address fan inefficiency. Energy savings from optimizing the system are estimated to be 338 kW, nearly half of the original measured input power of 678 kW. The project is currently being implemented and will have a payback period of less than 8...

  8. Museum Fan Downloads

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

    Museum Fan Downloads Participate with us Participate Become a Volunteer Share Your Stories Museum Fan Downloads Q&A Blog Contact us invisible utility element Museum Fan Downloads...

  9. Fan and Pad Greenhouse Evaporative Cooling Systems1 R. A. Bucklin, J. D. Leary, D. B. McConnell, and E. G. Wilkerson2

    E-Print Network [OSTI]

    Watson, Craig A.

    CIR1135 Fan and Pad Greenhouse Evaporative Cooling Systems1 R. A. Bucklin, J. D. Leary, D. B. Mc systems. Such high temperatures reduce crop quality and worker productivity. Evaporative cooling temperatures are important when dealing with evaporative cooling systems ­ dry bulb temperature and wet bulb

  10. Phylogenetic conservation of the regulatory and functional properties of the Vav oncoprotein family

    SciTech Connect (OSTI)

    Couceiro, Jose R. [Centro de Investigacion del Cancer and Instituto de Biologia Molecular y Celular del Cancer, CSIC-University of Salamanca, Campus Unamuno, E-37007 Salamanca (Spain); Martin-Bermudo, Maria D. [Instituto de Parasitologia y Biomedicina 'Lopez-Neyra', CSIC, Ventanilla St. 11, E-18001 Granada (Spain); Bustelo, Xose R. [Centro de Investigacion del Cancer and Instituto de Biologia Molecular y Celular del Cancer, CSIC-University of Salamanca, Campus Unamuno, E-37007 Salamanca (Spain)]. E-mail: xbustelo@usal.es

    2005-08-15T23:59:59.000Z

    Vav proteins are phosphorylation-dependent GDP/GTP exchange factors for Rho/Rac GTPases. Despite intense characterization of mammalian Vav proteins both biochemically and genetically, there is little information regarding the conservation of their biological properties in lower organisms. To approach this issue, we have performed a characterization of the regulatory, catalytic, and functional properties of the single Vav family member of Drosophila melanogaster. These analyses have shown that the intramolecular mechanisms controlling the enzyme activity of mammalian Vav proteins are already present in Drosophila, suggesting that such properties have been set up before the divergence between protostomes and deuterostomes during evolution. We also show that Drosophila and mammalian Vav proteins have similar catalytic specificities. As a consequence, Drosophila Vav can trigger oncogenic transformation, morphological change, and enhanced cell motility in mammalian cells. Gain-of-function studies using transgenic flies support the implication of this protein in cytoskeletal-dependent processes such as embryonic dorsal closure, myoblast fusion, tracheal development, and the migration/guidance of different cell types. These results highlight the important roles of Vav proteins in the signal transduction pathways regulating cytoskeletal dynamics. Moreover, they indicate that the foundations for the regulatory and enzymatic activities of this protein family have been set up very early during evolution.

  11. Electric, Gas, and Electric/Gas Energy Options for Cold-Air HVAC Systems

    E-Print Network [OSTI]

    Meckler, G.

    1989-01-01T23:59:59.000Z

    and incorporated into HVAC design for medium-to-large buildings, it is possible to structure system arrangements that reduce energy operating costs very significantly compared to conventional all-air VAV systems and also to all-air VAV ice thermal storage systems...

  12. Adaptive Control Design for Hysteretic Smart Systems Xiang Fan and Ralph C. Smith

    E-Print Network [OSTI]

    , aerospace, aeronautic and biomedical applications due to their unique transduction capabilities. However, and shape memory alloys, in integrated transducers to improve control authority and performance, reduce accuracy, high speed milling devices [8] and torque sensing for steering systems [7]. Shape memory alloys

  13. Reducing auxiliary power consumption with F. D. fans

    SciTech Connect (OSTI)

    Henson, G.E. (PSI Energy, Cayuga Generating Station, Cayuga, IN (US))

    1990-01-01T23:59:59.000Z

    On June 6, 1988, the Unit No. 1-A forced draft fan at Cayuga station failed in service. This failure and the subsequent replacement of the 1-A F.D. fan and 1.-B F.D. fan with a more energy efficient design, resulted in a reduction in auxiliary power consumption by 2,000 Kilo watts/hr. Annual savings are projected to be $129,000.00 for 1989. Cayuga station was designed and constructed with pressurized boilers. The forced draft fans supplied combustion air, and also were designed to force this air through the entire boiler. In 1975, induced draft (I.D.) fans were installed. This design change modified the boiler to a balanced draft system, which reduced the force or pressure of the air that the F.D. fans were required to supply. Operating as a balance draft unit, the station had considerably more F.D. fan capacity than was necessary. After the failure, a system and economic evaluation warranted a change in design specifications for the F.D. fans, with the quantity of air remaining unchanged, but supplied at a lower pressure. This paper deals with the cause of failure, economic details and justification of the new design fans, as well as the final testing of the fans after being placed in service.

  14. Field Study of Exhaust Fans for Mitigating Indoor Air Quality Problems: Final Report to Bonneville Power Administration

    E-Print Network [OSTI]

    Grimsrud, David T.

    2009-01-01T23:59:59.000Z

    Measurement Protocol Ventilation System Operation. . . . .Balanced mechanical ventilation systems, employing heatcompared to balanced ventilation systems. (a) exhaust fan

  15. Morphology and seismic stratigraphy of the Toyama deep sea fan 

    E-Print Network [OSTI]

    Shepherd, David Barton

    1990-01-01T23:59:59.000Z

    of the National Geophysical Data Center (NGDC) was obtained from the Geodynamics Research Institute at Texas A&M University, and along with additional data obtained from NAVOCEANO, provided significant control for mapping in the study area (Figure 9). The GSJ.... C. Hilde The Toyama Deep Sea Fan, a contemporary depositional feature located in the Japan Sea, is a canyon-fed elongate fan system with pronounced lobes in both the Yamato and Japan Basins. The Toyama Fan is the eighth largest modern fan system...

  16. Flexibility of Commercial Building HVAC Fan as Ancillary Service for Smart Grid

    E-Print Network [OSTI]

    Maasoumy, Mehdi

    2013-01-01T23:59:59.000Z

    Efficient Building Control Systems, Smart Grid and AircraftCommercial Building HVAC Fan as Ancillary Service for Smart

  17. Record of Communication Concerning Ceiling Fan and Ceiling Fan...

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

    This memo provides an overview of communications made to DOE staff on the subject of possible changes to standards and test procedures for ceiling fans and ceiling fan light kits....

  18. Fan-In Communications On A Cray Gemini Interconnect

    SciTech Connect (OSTI)

    Jones, Terry R [ORNL] [ORNL; Settlemyer, Bradley W [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    Using the Cray Gemini interconnect as our platform, we present a study of an important class of communication operations the fan-in communication pattern. By its nature, fan-in communications form hot spots that present significant challenges for any interconnect fabric and communication software stack. Yet despite the inherent challenges, these communication patterns are common in both applications (which often perform reductions and other collective operations that include fan-in communication such as barriers) and system software (where they assume an important role within parallel file systems and other components requiring high-bandwidth or low-latency I/O). Our study determines the effectiveness of differing clientserver fan-in strategies. We describe fan-in performance in terms of aggregate bandwidth in the presence of varying degrees of congestion, as well as several other key attributes. Comparison numbers are presented for the Cray Aries interconnect. Finally, we provide recommended communication strategies based on our findings.

  19. Laurentian fan: morphology, sediments, processes, and growth pattern

    SciTech Connect (OSTI)

    Stow, D.A.V.

    1981-03-01T23:59:59.000Z

    Thick sediment accumulations in deep water provide a new target in the search for oil, and require an innovative approach to hydrocarbon exploration. The Laurentian fan is a large, deep-sea (2000 to 5000 m) fan in the western North Atlantic, and has been the major depocenter off Nova Scotia since at least the early Tertiary. The main development of the present depositional and erosional fan morphology in the past 2 to 3 m.y. was closely related to onshore glacial history. The slope above the fan has been the site of rapid sedimentation and consequent slumping. A network of tributaries on the upper fan appears to feed three main channel systens incised up to 800 m between broad asymmetric levees. These channels meander widely across the lower fan, then die out abruptly and pass into a lobate suprafan. Differences between the Laurentian fan and typical fan models result, in part, from the muddy nature of the sediment and the supply system. The channels contain thick, coarse gravels which probably grade distally into sandy lobes. Both should produce good reservoir bodies with suitable source and trapping mechanisms. Fine-grained sediments were more important in fan construction. Interbedded turbidites, contourites, and hemipelagites are present in the late Quaternary-Holocene sequence. The distribution of these sediments and, in particular, the recognition of structural sequences, textural trends, and fabric types in the fine-grained turbidites can be used to characterize particular parts of the fan environment. The development of this approach should prove useful in future hydrocarbon exploration.

  20. Fan-beam intensity modulated proton therapy

    SciTech Connect (OSTI)

    Hill, Patrick [Department of Radiation Oncology, University of Iowa Hospitals and Clinics, Iowa City, Iowa 52242 (United States)] [Department of Radiation Oncology, University of Iowa Hospitals and Clinics, Iowa City, Iowa 52242 (United States); Westerly, David [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado 80045 (United States)] [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado 80045 (United States); Mackie, Thomas [Medical Devices, Morgridge Institute for Research, University of Wisconsin, Madison, Wisconsin 53715 (United States)] [Medical Devices, Morgridge Institute for Research, University of Wisconsin, Madison, Wisconsin 53715 (United States)

    2013-11-15T23:59:59.000Z

    Purpose: This paper presents a concept for a proton therapy system capable of delivering intensity modulated proton therapy using a fan beam of protons. This system would allow present and future gantry-based facilities to deliver state-of-the-art proton therapy with the greater normal tissue sparing made possible by intensity modulation techniques.Methods: A method for producing a divergent fan beam of protons using a pair of electromagnetic quadrupoles is described and particle transport through the quadrupole doublet is simulated using a commercially available software package. To manipulate the fan beam of protons, a modulation device is developed. This modulator inserts or retracts acrylic leaves of varying thickness from subsections of the fan beam. Each subsection, or beam channel, creates what effectively becomes a beam spot within the fan area. Each channel is able to provide 0–255 mm of range shift for its associated beam spot, or stop the beam and act as an intensity modulator. Results of particle transport simulations through the quadrupole system are incorporated into the MCNPX Monte Carlo transport code along with a model of the range and intensity modulation device. Several design parameters were investigated and optimized, culminating in the ability to create topotherapy treatment plans using distal-edge tracking on both phantom and patient datasets.Results: Beam transport calculations show that a pair of electromagnetic quadrupoles can be used to create a divergent fan beam of 200 MeV protons over a distance of 2.1 m. The quadrupole lengths were 30 and 48 cm, respectively, with transverse field gradients less than 20 T/m, which is within the range of water-cooled magnets for the quadrupole radii used. MCNPX simulations of topotherapy treatment plans suggest that, when using the distal edge tracking delivery method, many delivery angles are more important than insisting on narrow beam channel widths in order to obtain conformal target coverage. Overall, the sharp distal falloff of a proton depth-dose distribution was found to provide sufficient control over the dose distribution to meet objectives, even with coarse lateral resolution and channel widths as large as 2 cm. Treatment plans on both phantom and patient data show that dose conformity suffers when treatments are delivered from less than approximately ten angles. Treatment time for a sample prostate delivery is estimated to be on the order of 10 min, and neutron production is estimated to be comparable to that found for existing collimated systems.Conclusions: Fan beam proton therapy is a method of delivering intensity modulated proton therapy which may be employed as an alternative to magnetic scanning systems. A fan beam of protons can be created by a set of quadrupole magnets and modified by a dual-purpose range and intensity modulator. This can be used to deliver inversely planned treatments, with spot intensities optimized to meet user defined dose objectives. Additionally, the ability of a fan beam delivery system to effectively treat multiple beam spots simultaneously may provide advantages as compared to spot scanning deliveries.

  1. Laser Doppler sensor employing a single fan-shaped interference fringe system for distance and shape measurement of laterally moving objects

    SciTech Connect (OSTI)

    Pfister, Thorsten; Buettner, Lars; Czarske, Juergen

    2009-01-01T23:59:59.000Z

    For monitoring the position and shape of fast moving and, especially, rotating objects such as turbo machine rotors, contactless and compact sensors with a high measurement rate as well as high precision are required. We present for the first time, to the best of our knowledge, a novel laser Doppler sensor employing a single fan-shaped interference fringe system, which allows measuring for the position and shape of fast moving solid bodies with known tangential velocity. It is shown theoretically as well as experimentally that this sensor offers concurrently high position resolution and high temporal resolution in contrast to conventional measurement techniques, since its measurement uncertainty is, in principle, independent of the object velocity. Moreover, it can be built very compact, because it features low complexity. To prove its operational capability and its potential for practical applications, radial and axial shape measurements of rotating bodies are demonstrated in comparison with triangulation. An average position resolution of about 2 {mu}m could be achieved.

  2. Simulation of the Post-Retrofit Thermal Energy Use for the University Teaching Center (UTC) Building with the Use of Simplified System Models 

    E-Print Network [OSTI]

    Katipamula, S.; Claridge, D. E.

    1991-01-01T23:59:59.000Z

    Several state owned buildings with dual-duct constant volume (DDCV) systems have been retrofitted with energy efficient variable air volume systems (VAV) as part of the Texas LoanSTAR Program. One method of determining the energy savings resulting...

  3. Comparative Study of Availability on Energy/Environment Commissioning Using Existing HVAC Simulation Programs for a Model Building

    E-Print Network [OSTI]

    Niwa, H.; Nakahara, N.; Okumiya, M.; Suganaga, M.; Tanaka, H.; Pan, S.; Watanabe, T.; Zheng, M.

    2004-01-01T23:59:59.000Z

    limit of VAV air flow rate: 50% of minimum ? Heat Source System: Thermal storage system using AHP(Air-soure HeatPumps) ? Performance characteristics of fan, pump, heat pump are defined as manufacturer's ? Internal heat gain schedules are set...

  4. N-k-Survivable Power System Design Richard Li-Yang Chen, Amy Cohn, Neng Fan, Ali Pinar

    E-Print Network [OSTI]

    Pinar, Ali

    formulate this problem, taking into account both transmission and generation expansion planning, as a mixed, separation oracle, implicit optimization. I. INTRODUCTION ACCORDING to the Transmission Planning Standard, which is the main method used for network inhibition/interdiction problems. For power system expansion

  5. INSTALLATION CERTIFICATE CF-6R-MECH-04 Space Conditioning Systems, Ducts and Fans (Page 1 of 2)

    E-Print Network [OSTI]

    Conditioning Systems Heating Equipment Cooling Equipment Equip Type (package heat pump) CEC Certified Mfr. Name or is enclosed entirely in conditioned space. Equip Type (package- heat pump) CEC Certified Mfr. Name and Model) Site Address: Enforcement Agency: Permit Number: 2008 Residential Compliance Forms August 2009 Space

  6. Fan Systems | 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 Chinaof EnergyImpactOnSTATEMENT OF DAVID GEISEREnergy1DNVDOE'sUAfter 12 to

  7. Experimental Evaluation of Installed Cooking Exhaust Fan Performance

    E-Print Network [OSTI]

    Singer, Brett C.

    2011-01-01T23:59:59.000Z

    High High Fan (cfm) Burner Fire Btu/hr A- 50 Fan/Plume EffLow Fan (cfm) Burner Fire Btu/hr Fan/Plume Eff Figure  3.  Med Fan (cfm) Burner Fire Btu/hr Fan/Plume Eff Figure  7.  

  8. Shut Down Fans, Save $1/4 Million/Yr and Increase Airflow?

    E-Print Network [OSTI]

    Martin, V.; Ohrt, H.

    In 1994, the fume collection system for the Desulphurization Station at Dofasco Inc., Hamilton, Ontario was studied for energy and maintenance optimization. The existing system consisted of two 600 hp fans on a wet scrubber system for two collection...

  9. A new development in microcomputer software for mine ventilation planning involving the installation of fans

    SciTech Connect (OSTI)

    O'Leary, M.S.J.; McPherson, M.J.

    1989-01-01T23:59:59.000Z

    This paper introduces a computer simulation that extends the use of microcomputer systems for mine ventilation planning. The program was developed as part of an ongoing study to produce a simulation model that would determine the optimum duties of a main fan and a booster fan without requiring the trial-and-error runs that are necessary with currently available programs. To use the new program, the user specifies the location of one main fan and one booster fan, and the minimum required airflows in any number of working places. The computer determines the fan duties that maintains the required airflows at the lowest operating costs without causing undesired recirculation. The methodology of the program and an example showing how it can be applied are presented.

  10. Improving the efficiency of centrifugal fans

    E-Print Network [OSTI]

    Wolfe, Clifford Kent

    1976-01-01T23:59:59.000Z

    P s static pressure corrected to fan outlet H2O Nomenclature (cont. ) Symbol Description Units p ~ N? N et e s S hp pressure corrected to specified speed and standard air density specified speed test fan speed total (mechanical...) efficiency static efficiency specific horsepower in. H 0 RPN RPN hp CHAPTER I INTRODUCTION The uses of centrifugal (squirrel cage) fans in our nation range from air conditioning in our homes to exhausting fumes from industrial plants. Because...

  11. Experimental Evaluation of Installed Cooking Exhaust Fan Performance

    SciTech Connect (OSTI)

    Singer, Brett C.; Delp, William W.; Apte, Michael G.

    2010-11-01T23:59:59.000Z

    The installed performance of cooking exhaust fans was evaluated through residential field experiments conducted on a sample of 15 devices varying in design and other characteristics. The sample included two rear downdraft systems, two under-cabinet microwave over range (MOR) units, three different installations of an under-cabinet model with grease screens across the bottom and no capture hood, two devices with grease screens covering the bottom of a large capture hood (one under-cabinet, one wall-mount chimney), four under-cabinet open hoods, and two open hoods with chimney mounts over islands. Performance assessment included measurement of airflow and sound levels across fan settings and experiments to quantify the contemporaneous capture efficiency for the exhaust generated by natural gas cooking burners.Capture efficiency is defined as the fraction of generated pollutants that are removed through the exhaust and thus not available for inhalation of household occupants. Capture efficiency (CE) was assessed for various configurations of burner use (e.g., single front, single back, combination of one front and one back, oven) and fan speed setting. Measured airflow rates were substantially lower than the levels noted in product literature for many of the units. This shortfall was observed for several units costing in excess of $1000. Capture efficiency varied widely (from<5percent to roughly 100percent) across devices and across conditions for some devices. As expected, higher capture efficiencies were achieved with higher fan settings and the associated higher air flow rates. In most cases, capture efficiencies were substantially higher for rear burners than for front burners. The best and most consistent performance was observed for open hoods that covered all cooktop burners and operated at higher airflow rates. The lowest capture efficiencies were measured when a front burner was used with a rear backdraft system or with lowest fan setting for above the range systems that do not cover the front burners.

  12. Fan-fold shielded electrical leads

    DOE Patents [OSTI]

    Rohatgi, R.R.; Cowan, T.E.

    1996-06-11T23:59:59.000Z

    Disclosed are fan-folded electrical leads made from copper cladded Kapton, for example, with the copper cladding on one side serving as a ground plane and the copper cladding on the other side being etched to form the leads. The Kapton is fan folded with the leads located at the bottom of the fan-folds. Electrical connections are made by partially opening the folds of the fan and soldering, for example, the connections directly to the ground plane and/or the lead. The fan folded arrangement produces a number of advantages, such as electrically shielding the leads from the environment, is totally non-magnetic, and has a very low thermal conductivity, while being easy to fabricate. 3 figs.

  13. Morphology and seismic stratigraphy of the Toyama deep sea fan

    E-Print Network [OSTI]

    Shepherd, David Barton

    1990-01-01T23:59:59.000Z

    are found in all fan regions, although facies F is more plentiful in slope regions. Since facies C, D, and G are found in both non-fan and lower fan turbi- dite sequences, fan deposits must be distinguished by their thickening and coarsening...

  14. Performance Assessment of Photovoltaic Attic Ventilator Fans 

    E-Print Network [OSTI]

    Parker, D. S.; Sherwin, J. R.

    2000-01-01T23:59:59.000Z

    has long been identified as a method to abate such heat gains. We present test results from using the photovoltaic (PV) attic ventilator fans in a test home to assess impact on attic and cooling energy performance....

  15. Synchronous and Cogged Fan Belt Performance Assessment

    SciTech Connect (OSTI)

    Cutler, D.; Dean, J.; Acosta, J.

    2014-02-01T23:59:59.000Z

    The GSA Regional GPG Team commissioned the National Renewable Energy Laboratory (NREL) to perform monitoring of cogged V-belts and synchronous belts on both a constant volume and a variable air volume fan at the Byron G. Rodgers Federal Building and U.S. Courthouse in Denver, Colorado. These motor/fan combinations were tested with their original, standard V-belts (appropriately tensioned by an operation and maintenance professional) to obtain a baseline for standard operation. They were then switched to the cogged V-belts, and finally to synchronous belts. The power consumption by the motor was normalized for both fan speed and air density changes. This was necessary to ensure that the power readings were not influenced by a change in rotational fan speed or by the power required to push denser air. Finally, energy savings and operation and maintenance savings were compiled into an economic life-cycle cost analysis of the different belt options.

  16. Performance Assessment of Photovoltaic Attic Ventilator Fans

    E-Print Network [OSTI]

    Parker, D. S.; Sherwin, J. R.

    2000-01-01T23:59:59.000Z

    has long been identified as a method to abate such heat gains. We present test results from using the photovoltaic (PV) attic ventilator fans in a test home to assess impact on attic and cooling energy performance....

  17. Performance Assessment of Photovoltaic Attic Ventilator Fans

    Broader source: Energy.gov [DOE]

    A case study of photovoltaic attic ventilator fans was conducted on an occupied single family home in Central Florida. Two fans were installed at mid-summer in an instrumented home where attic air temperature, meteorological conditions and space cooling electric power were measured. The home already had an attic radiant barrier, but still experienced attic air temperatures in excess of 130oF.

  18. A Smart Logic for Conference Room Terminal Box of Single Duct VAV System

    E-Print Network [OSTI]

    Yu, Y.; Xu, K.; Cho, Y.; Liu, M.

    2007-01-01T23:59:59.000Z

    ([ ? +????= AAGGmG wd & (15) A constant slew rate actuator serves the valve and its position can be calculated from: + ??+?= rttptp )1()( (if + > r dt dp ) (16) ? ??+?= rttptp )1()( (if ? < r dt dp ) (17) )()( tutp... 97 19 1.9 17.1 1.000 0.437 92 130 13.0 117.0 0.913 0.350 87 314 31.4 282.6 0.825 0.262 82 415 41.5 373.5 0.738 0.175 77 616 61.6 554.4 0.650 0.087 N/A 72 678 67.8 610.2 0.563 0.000 67 786 78.6 707.4 0.475 0.068 62 608 60.8 547.2 0.388 0...

  19. Variable Speed Drive Volumetric Tracking (VSDVT) for Airflow Control in Variable Air Volume (VAV) Systems 

    E-Print Network [OSTI]

    Liu, M.

    2002-01-01T23:59:59.000Z

    this method by integrating it with the static pressure reset techniques to prevent malfunctioning under several typical building operating problems. Unfortunately, this method can not be used in buildings which have pneumatic terminal box controllers...

  20. A Functional Test Procedure for the improved commissioning of a VAV system

    E-Print Network [OSTI]

    Andre, P.; Lacote, P.; Aparecida Silva, C.; Hannay, J.; Lebrun, J.

    2004-01-01T23:59:59.000Z

    by logically sequencing the operations according to the following order: 1) test in manual (ie not controlled by the BEMS) operation 2) test in manual (ie not controlled by the BEMS) stop 3) test in normal operation 4) test at maximum flowrate 5) test...

  1. Analysis of the Potential Energy Savings for 14 Office Buildings with VAV Systems

    E-Print Network [OSTI]

    Claridge, D. E.; Liu, J.; Baltazar, J. C.

    2010-01-01T23:59:59.000Z

    At the beginning of an existing building commissioning (EBCx)/energy retrofit project, some form of screening is usually applied to determine whether there is sufficient potential for savings to justify a formal EBCx assessment/energy audit...

  2. Evaluation of Retrofit Variable-Speed Furnace Fan Motors

    SciTech Connect (OSTI)

    Aldrich, R.; Williamson, J.

    2014-01-01T23:59:59.000Z

    In conjunction with the New York State Energy Research and Development Authority (NYSERDA) and Proctor Engineering Group, Ltd. (PEG), the Consortium for Advanced Residential Buildings (CARB) has evaluated the Concept 3 (tm) replacement motors for residential furnaces. These brushless, permanent magnet (BPM) motors can use much less electricity than their PSC (permanent split capacitor) predecessors. This evaluation focuses on existing homes in the heating-dominated climate of upstate New York with the goals of characterizing field performance and cost-effectiveness. The results of this study are intended to be useful to home performance contractors, HVAC contractors, and home efficiency program stakeholders. The project includes eight homes in and near Syracuse, NY. Tests and monitoring was performed both before and after fan motors were replaced. Average fan power reductions were approximately 126 Watts during heating and 220 Watts during cooling operation. Over the course of entire heating and cooling seasons, these translated into average electric energy savings of 163 kWh. Average cost savings were $20 per year. Homes where the fan was used outside of heating and cooling mode saved an additional $42 per year on average. Results indicate that BPM replacement motors will be most cost-effective in HVAC systems with longer run times and relatively low duct static pressures. More dramatic savings are possible if occupants use the fan-only setting when there is no thermal load. There are millions of cold-climate, U.S. homes that meet these criteria, but the savings in most homes tested in this study were modest.

  3. STATE OF CALIFORNIA DUCT LEAKAGE TEST EXISTING DUCT SYSTEM

    E-Print Network [OSTI]

    2010 Outside air (OA) ducts for Central Fan Integrated (CFI) ventilation systems, shall not be sealed

  4. Toward Green Systems for Cleanrooms: Energy Efficient Fan-filter Units Ming-Shan Jeng, Industrial Technology Research Institute, msjeng@itri.org.tw

    E-Print Network [OSTI]

    of twenty FFUs collected from the market were tested, including thirteen 1220 mm x 610 mm (or 4 ft x 2 ft technology with architecture and natural resources. Cleanroom HVAC systems account for a large portion of energy use in cleanrooms. Improving energy efficiency of HVAC systems and their components can contribute

  5. The effect of fan and heat sink design on heat removal from microprocessor chips

    E-Print Network [OSTI]

    Baltrip, Kedra G

    1997-01-01T23:59:59.000Z

    Air flow and heat removal characteristics for fan/heat sink designs used to cool Pentium class processors were analyzed. Five designs were tested for fan speed, differential and static nozzle pressure, static fan pressure, fan input current...

  6. assess fluvial fan: Topics by E-print Network

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

    mounting setup was such that fan with uniform blades can be tested. Generally, fans have cut blades on the vehicle due to mounting accessories. We describe a patented design of...

  7. alluvial fan surfaces: Topics by E-print Network

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

    mounting setup was such that fan with uniform blades can be tested. Generally, fans have cut blades on the vehicle due to mounting accessories. We describe a patented design of...

  8. alluvial fan nye: Topics by E-print Network

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

    mounting setup was such that fan with uniform blades can be tested. Generally, fans have cut blades on the vehicle due to mounting accessories. We describe a patented design of...

  9. Cooling efficiency of a brushless direct current stand fan

    E-Print Network [OSTI]

    Yang, Bin; Schiavon, Stefano; Sekhar, Chandra; Cheong, David; Tham, Kwok Wai; Nazaroff, William W

    2015-01-01T23:59:59.000Z

    eq (°C) Front Side Fig. 4. Cooling effect comparison betweenmanikin distance. 3.1.2. Cooling Fan Efficiency (CFE) indexdevices [41-42]. Local cooling for front and side fan-

  10. Cooling efficiency of a brushless direct current stand fan

    E-Print Network [OSTI]

    Yang, Bin; Schiavon, Stefano; Sekhar, Chandra; Cheong, David; Tham, Kwok Wai; Nazaroff, William W

    2015-01-01T23:59:59.000Z

    orientations for 24 °C dry-bulb temperature, fan speedchamber under four dry-bulb temperatures (24, 26, 28, and 30CFE index is influenced by dry-bulb temperature, fan speed

  11. Use of VFDs on Asphalt Plant Induced Draft Fans

    E-Print Network [OSTI]

    Anderson, G. R.; Case, P. L.; Lowery, J.

    2005-01-01T23:59:59.000Z

    Studies of 10 asphalt plants in the Intermountain Region have identified average ID fan energy savings of 68% by controlling airflow using Variable Frequency Drives (VFDs) on the fan motors in place of damper control (inlet or outlet). Average...

  12. Ultra-short nacelles for low fan pressure ratio propulsors

    E-Print Network [OSTI]

    Peters, Andreas, Ph. D. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    This thesis addresses the uncharted inlet and nacelle design space for low pressure ratio fans for advanced aeroengines. A key feature in low fan pressure ratio (FPR) propulsors with short inlets and nacelles is the increased ...

  13. Fan-less long range alpha detector

    DOE Patents [OSTI]

    MacArthur, D.W.; Bounds, J.A.

    1994-05-10T23:59:59.000Z

    A fan-less long range alpha detector is disclosed which operates by using an electrical field between a signal plane and the surface or substance to be monitored for air ions created by collisions with alpha radiation. Without a fan, the detector can operate without the possibility of spreading dust and potential contamination into the atmosphere. A guard plane between the signal plane and the electrically conductive enclosure and maintained at the same voltage as the signal plane, reduces leakage currents. The detector can easily monitor soil, or other solid or liquid surfaces. 2 figures.

  14. Alternate Air Delivery Systems for Hot and Humid Climates

    E-Print Network [OSTI]

    Wallace, M.

    1996-01-01T23:59:59.000Z

    -zone units in the Harris County Criminal Courts Building in Houston, one of the most hot and humid climates in the United States, as well as in several other facilities. This paper will discuss the adoption of ASHRAE 62, its effects on VAV systems, and how...

  15. Adjustable Speed- A Tool for Saving Energy Losses in Pumps, Fans, Fans, Blowers and Compressors

    E-Print Network [OSTI]

    Hickok, H. N.

    Petroleum and chemical plants of today are effectively cutting energy losses in their plants thermally, electrically, and mechanically in their process equipment. In rotating process equipment such as pumps, fans, compressors, and blowers, much...

  16. Knowing fans, knowing music : an exploration of fan interaction on Twitter

    E-Print Network [OSTI]

    McCollum, Nick

    2011-01-01T23:59:59.000Z

    and the Origins of Music Fandom in Nineteenth-CenturyAmerica. ” In Fandom: Identities and Communities in aWhy Study Fans? ” In Fandom: Identities and Communities in a

  17. An introduction to financial econometrics Jianqing Fan

    E-Print Network [OSTI]

    Wang, Lily

    An introduction to financial econometrics Jianqing Fan Department of Operation Research econometrics? This simple question does not have a simple answer. The boundary of such an interdisciplinary speaking, financial econometrics is to study quantitative problems arising from finance. It uses sta

  18. Analysis of Innovative HVAC System Technologies and Their Application for Office Buildings in Hot and Humid Climates

    E-Print Network [OSTI]

    Tanskyi, Oleksandr

    2012-02-14T23:59:59.000Z

    air distribution system VAV ? Variable air volume VFD ? Variable frequency drive wb ? wet-bulb WERC ? Wisenbaker Engineering Research Center viii TABLE OF CONTENTS Page ABSTRACT... fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2010 Major Subject: Mechanical Engineering Analysis of Innovative HVAC System Technologies and Their Application for Office...

  19. Fan System Assessment Tool Introduction - Webcast

    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|6721Energy 3_adv_battery.pdf More Fact Sheet:BetaFederalFall: Energy

  20. Mass and fans in attached sunspaces

    SciTech Connect (OSTI)

    Jones, R.W.; McFarland, R.D.; Lazarus, G.S.

    1982-01-01T23:59:59.000Z

    The effect of thermal storage mass on the performance of an attached sunspace is investigated for a particular design in Boston. Mass in the sunspace and in the adjoining building are compared. Performance is evaluated in terms of temperature conditions in the sunspace and delivery of useful solar heat to the adjoining building. The dependence of the results on the manner of heat delivery is studied. Both natural convection and fan-forced air flow are included.

  1. Save Energy with Axial Fans

    E-Print Network [OSTI]

    Monroe, R. C.

    1981-01-01T23:59:59.000Z

    cooling systems would be as follows: In all our discussions dry cooling towers refers to air cooled heat exchangers using no evaporative cooling. A comparison of the systems is shown below and in Fi gs. 1 and 2: TYPICAl FORCED DRAFT AIR COOLER FIG.1... 1----v.fIl. STACK TYPICAL WET COOLING TOWER Flg.2 428 ESL-IE-81-04-73 Proceedings from the Third Industrial Energy Technology Conference Houston, TX, April 26-29, 1981 CONDITION DRY COOLING WET COOLING Approach Imaginary cylinder Supporting...

  2. Procedure and Application for Determining the Cold Deck and Hot Deck Airflow in a Dual-Duct System

    E-Print Network [OSTI]

    Liu, G.; Mingsheng, L.

    2006-01-01T23:59:59.000Z

    This paper introduces an innovative method to determine the cold and hot airflow through a dual-duct variable air volume (VAV) system. The actual building load can be identified based on the calculated airflow and temperature for both the cold...

  3. Development of Power-head based Fan Airflow Station

    E-Print Network [OSTI]

    Wang, G.; Liu, M.

    2005-01-01T23:59:59.000Z

    related to the measured fan speed. Actually the measured fan speed is assumed to equal the motor synchronous speed, which is proportional to the VFD frequency. Theoretically it is not true. The difference between the synchronous speed and motor speed... the basic theory, experiment and results of the power-head based airflow station. Theory Figure 1 shows variable speed fan connection schematic. VFD is normally installed on the motor to adjust the motor speed by modulating frequency. Typically...

  4. DOE Publishes Final Rule for Residential Furnace Fan Test Procedure...

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

    (DOE) has published a final rule regarding test procedures for residential furnace fans. 79 FR 500 (January 3, 2014). Find more information on the rulemaking, including milestones,...

  5. Application of Innovative Technologies During Continuous Commissioning 

    E-Print Network [OSTI]

    Joo, I. S.; Liu, M.; Wang, J.; Hansen, K.

    2003-01-01T23:59:59.000Z

    years generally face degradation of energy systems. Most of these systems use out-of-date equipment and pneumatic controls. Energy improvement opportunities exist in many buildings due to the inefficient operation of energy systems.... The HVAC systems are located in the penthouse and serve the entire building. The AHU consists of a supply fan of 100 HP and a return fan of 50 HP. There are a total of 52 original pneumatic VAV boxes (no reheat coils) which were installed in 1972...

  6. Temperature and humidity control during cooling and dehumidifying by compressor and evaporator fan speed variation

    SciTech Connect (OSTI)

    Krakow, K.I.; Lin, S.; Zeng, Z.S. [Concordia Univ., Montreal, Quebec (Canada). Dept. of Mechanical Engineering

    1995-08-01T23:59:59.000Z

    The accurate control of temperature and relative humidity during cooling and dehumidifying air-conditioning processes may be achieved by compressor and evaporator fan speed variation. Proportional-integral-differential (PID) control methods are shown to be suitable for attaining compressor and evaporator fan speeds such that the sensible and latent components of the refrigeration system capacity equal the sensible and latent components of the system load. The feasibility of the control method has been verified experimentally. A numerical model of an environmental control system, including refrigeration, space, and PID control subsystems, has been developed. The model is suitable for determining system response to variations of PID coefficient values and to variations of system loads.

  7. A study of the design procedure and the performance characteristics of axial exhaust fans

    E-Print Network [OSTI]

    Barker, Gilbert Hamilton

    1949-01-01T23:59:59.000Z

    , unnecessary to balance any set of blades used~ because no fan vibration occurred during testing, Ths motor f or the fan vas a one third horsepower motor The original research plan called for construction of onjy one set of blades vitA an aspect, ratio... . . . . . . . . . . . ~ . ~ . 51 7, Fan Efficiency of L8-inch Fans . . . . . . . . . . . . . . , . 52 8 Variation of Fan Eff'iciency sith Pitch 53 Variation of Fau Efficiency with Pitch . . . . . . . . . . . 54 10. Fan Capacity for Blade with Aspect' Ratio ~ Ons...

  8. Choosing the right boiler air fans at Weston 4

    SciTech Connect (OSTI)

    Spring, N.

    2009-04-15T23:59:59.000Z

    When it came to choosing the three 'big' boiler air fans - forced draft, induced draft and primary air, the decision revolved around efficiency. The decision making process for fan selection for the Western 4 supercritical coal-fired plant is described in this article. 3 photos.

  9. Heuristics for Balancing Turbine Fans Samir V. Amiouny

    E-Print Network [OSTI]

    Bartholdi III, John J.

    Reiger, 1986. In some cases, such as in the constructionof hydraulic, steam or gas turbines, fan bladesHeuristics for Balancing Turbine Fans Samir V. Amiouny John J. Bartholdi, III John H. Vande Vate April 20, 1997 Abstract We develop heuristics for a problem that models the static balancing of turbine

  10. Method for fabricating fan-fold shielded electrical leads

    DOE Patents [OSTI]

    Rohatgi, R.R.; Cowan, T.E.

    1994-12-27T23:59:59.000Z

    Fan-folded electrical leads made from copper cladded Kapton, for example, with the copper cladding on one side serving as a ground plane and the copper cladding on the other side being etched to form the leads. The Kapton is fan folded with the leads located at the bottom of the fan-folds. Electrical connections are made by partially opening the folds of the fan and soldering, for example, the connections directly to the ground plane and/or the lead. The fan folded arrangement produces a number of advantages, such as electrically shielding the leads from the environment, is totally non-magnetic, and has a very low thermal conductivity, while being easy to fabricate. 3 figures.

  11. Costs and benefits of energy efficiency improvements in ceiling fans

    SciTech Connect (OSTI)

    Shah, Nihar; Sathaye, Nakul; Phadke, Amol; Letschert, Virginie [Lawrence Berkeley National Lab., CA (United States). Environmental Energy Technology Division] [Lawrence Berkeley National Lab., CA (United States). Environmental Energy Technology Division

    2013-10-15T23:59:59.000Z

    Ceiling fans contribute significantly to residential electricity consumption, especially in developing countries with warm climates. The paper provides analysis of costs and benefits of several options to improve the efficiency of ceiling fans to assess the global potential for electricity savings and green house gas (GHG) emission reductions. Ceiling fan efficiency can be cost-effectively improved by at least 50% using commercially available technology. If these efficiency improvements are implemented in all ceiling fans sold by 2020, 70 terawatt hours per year could be saved and 25 million metric tons of carbon dioxide equivalent (CO2-e) emissions per year could be avoided, globally. We assess how policies and programs such as standards, labels, and financial incentives can be used to accelerate the adoption of efficient ceiling fans in order to realize potential savings.

  12. Building America Case Study: Evaluating Through-Wall Air Transfer Fans, Pittsburgh, Pennsylvania (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-10-01T23:59:59.000Z

    In this project, Building America team IBACOS performed field testing in a new construction unoccupied test house in Pittsburgh, Pennsylvania to evaluate heating, ventilating, and air conditioning (HVAC) distribution systems during heating, cooling, and midseason conditions. Four air-based HVAC distribution systems were assessed:-a typical airflow ducted system to the bedrooms, a low airflow ducted system to the bedrooms, a system with transfer fans to the bedrooms, and a system with no ductwork to the bedrooms. The relative ability of each system was considered with respect to relevant Air Conditioning Contractors of America and ASHRAE standards for house temperature uniformity and stability, respectively.

  13. Particle trajectories and acceleration during 3D fan reconnection

    E-Print Network [OSTI]

    S. Dalla; P. K. Browning

    2008-11-07T23:59:59.000Z

    Context. The primary energy release in solar flares is almost certainly due to magnetic reconnection, making this a strong candidate as a mechanism for particle acceleration. While particle acceleration in 2D geometries has been widely studied, investigations in 3D are a recent development. Two main classes of reconnection regimes at a 3D magnetic null point have been identified: fan and spine reconnection Aims. Here we investigate particle trajectories and acceleration during reconnection at a 3D null point, using a test particle numerical code, and compare the efficiency of the fan and spine regimes in generating an energetic particle population. Methods. We calculated the time evolution of the energy spectra. We discuss the geometry of particle escape from the two configurations and characterise the trapped and escaped populations. Results. We find that fan reconnection is less efficent than spine reconnection in providing seed particles to the region of strong electric field where acceleration is possible. The establishment of a steady-state spectrum requires approximately double the time in fan reconnection. The steady-state energy spectrum at intermediate energies (protons 1 keV to 0.1 MeV) is comparable in the fan and spine regimes. While in spine reconnection particle escape takes place in two symmetric jets along the spine, in fan reconnection no jets are produced and particles escape in the fan plane, in a ribbon-like structure.

  14. Rehabilitation of Secondary Heating and Cooling Systems - Case Study 

    E-Print Network [OSTI]

    Chen, H.; Deng, S.; Hugghins, J.; Brundidge, T.; Claridge, D.; Turner, W. D.; Bruner, H., Jr.

    2002-01-01T23:59:59.000Z

    VAV boxes use hot water reheat coils and supply air dampers, which are pneumatically controlled. A schematic diagram of the chilled water system in the building is shown in Figure 2. A schematic diagram of the heating water system... than the dynamic or modulating rating. The close-off pressure value is proportional to the size of actuator and inverse to valve size. The close-off pressure for electronic actuator is 3 ~ 5 times the values for pneumatic actuator. The pressure...

  15. Fallout fans: Negotiations over text integrity in the age of the active audience

    E-Print Network [OSTI]

    Milner, Ryan M.

    2008-07-31T23:59:59.000Z

    of these commentaries on the new economy are using the terms, ?fan,? ?fandom,? or ?fan culture,? yet their models rest on the same social behaviors and emotional commitments that fan scholars have been researching over the past several decades? (Jenkins, 2007, p. 359...), three preeminent fan scholars, declared that we have reached the ?fandom is beautiful? phase of fan studies (p. 3). Such claims about fan influence have also been made by influential fan scholar Henry Jenkins (2006a, 2006b, 2007), indicating a shift...

  16. Thermal and air quality acceptability in buildings that reduce energy by reducing minimun airflow from overhead diffusers

    E-Print Network [OSTI]

    2012-01-01T23:59:59.000Z

    for rating the performance of air outlets and inlets. ANSI/comfort with a variable air volume (VAV) system. InternalGuidelines: Advanced Variable Air Volume (VAV) Systems.

  17. High Efficiency Fans and High Efficiency Electrical Motors

    E-Print Network [OSTI]

    Breedlove, C. W.

    Replacing nominal efficient electrical motors with premium efficiency can save on electrical power costs in cotton gins. Connected horsepower load on industrial air fans is approximately 60% of the total horsepower in a typical cotton gin...

  18. alluvial fan sedimentation: Topics by E-print Network

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

    alluvial fan of the Murray-Darling Basin in (more) Timms, Wendy Amanda 2001-01-01 22 Kinematic wave model of bed profiles in alluvial channels Texas A&M University - TxSpace...

  19. Modeling and ecodesigning crossflow ventilation fans with Mathematica

    E-Print Network [OSTI]

    Argentini, Gianluca

    2010-01-01T23:59:59.000Z

    The efficiency of a simple model of crossflow fan is maximized when the geometry depends on a design parameter. The flow field is numerically computed using a Galerkin method for solving a Poisson partial differential equation.

  20. Minor League Fan Satisfaction with the Season Ticket Selling Process

    E-Print Network [OSTI]

    Reese, Jason D.

    2011-08-08T23:59:59.000Z

    the knowledge of sport marketing. Without their assistance and confidence in me, this study would not have existed. vi TABLE OF CONTENTS Page ABSTRACT... ................................................................................ 1 II REVIEW OF LITERATURE ............................................................... 6 Fan Satisfaction .............................................................................. 6 Marketing Activities...

  1. Continuous Commissioning® of an Office Building

    E-Print Network [OSTI]

    Zheng, B.; Liu, M.; Pang, X.; Wang, J.; Hansen, K.

    2005-01-01T23:59:59.000Z

    Continuous Commissioning ® of an Office Building Bin Zheng Mingsheng Liu, Ph.D., P.E. Xiufeng Pang Jinrong Wang P.E. Ken Hansen P.E. Energy Systems Laboratory University of Nebraska-Lincoln Omaha Public Power District Abstract... Control in VAV Systems,” Proceedings of ISEC 2003. [3] Liu, M, G. Liu, Joo, I, Song, L. and Wang, G. 2004, “Development of In-situ Fan Curve Measurement for VAV AHU System,” Proceedings of ISEC 2004. [4] Zheng, B., Pang, X. and Liu, M., 2005, “Using...

  2. Polycyclic aromatic hydrocarbon distributions in Mississippi Fan sediments

    E-Print Network [OSTI]

    Sandberg, William Allan

    1986-01-01T23:59:59.000Z

    POLYCYCLIC AROMATIC HYDROCARBON DISTRIBUTIONS IN MISSISSIPPI FAN SEDIMENTS A Thesis by WILLIAM ALLAN SANDBERG Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE December 1986 Major Subject: Oceanography POLYCYCLIC AROMATIC HYDROCARBON DISTRIBUTIONS IN MISSISSIPPI FAN SEDIMENTS A Thesis by WILLIAM ALLAN SANDBERG Approved as to style and content by: James M. Brooks (Chairman of Committee) Leis M...

  3. Problem of Vain Energy Consumption in a VAV Air Conditioning System Shared By an Inner Zone and Exterior Zone

    E-Print Network [OSTI]

    Wenji, G.; Ling, C.; Dongdong, L.; Mei, S.; Li, Z.

    2006-01-01T23:59:59.000Z

    In northern China, there are a large number of space buildings divided in inner zone and exterior zone based on usage requirements. The exterior zone needs to be heated in winter and cooled in summer, while the inner zone needs to be cooled both...

  4. PSU CBEI: VOLTTRON Compatible and Cost-Effective Fault Diagnostic Solutions for AHU-VAV and AHU-CAV Systems

    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 in235-1 Termoelectrica U.SPRESS FACT SHEETEnergy 7EnergyPSU CBEI:

  5. Dynamic Bowtie for Fan-beam CT

    E-Print Network [OSTI]

    Liu, Fenglin; Cong, Wenxiang; Hsieh, Scott; Pelc, Norbert

    2013-01-01T23:59:59.000Z

    A bowtie is a filter used to shape an x-ray beam and equalize its flux reaching different detector channels. For development of spectral CT with energy-discriminative photon-counting (EDPC) detectors, here we propose and evaluate a dynamic bowtie for performance optimization based on a patient model or a scout scan. Our dynamic bowtie modifies an x-ray beam intensity profile by mechanical rotation and adaptive adjustment of the x-ray source flux. First, a mathematical model for dynamic bowtie filtering is established for an elliptical section in fan-beam geometry, and the contour of the optimal bowtie is derived. Then, numerical simulation is performed to compare the performance of the dynamic bowtie in the cases of an ideal phantom and a realistic cross-section relative to the counterparts without any bowtie and with a fixed bowtie respectively. Our dynamic bowtie can equalize the expected numbers of photons in the case of an ideal phantom. In practical cases, our dynamic bowtie can effectively reduce the dy...

  6. Effect of building airtightness and fan size on the performance of mechanical ventilation systems in new U.S. houses: a critique of ASHRAE standard 62.2-2003

    E-Print Network [OSTI]

    Roberson, J.

    2004-01-01T23:59:59.000Z

    Install Residential Ventilation Systems. The Healthy HouseMechanical Ventilation Systems. Canadian StandardsCode: Whole House Ventilation Systems Research Report. 39

  7. Development of Diagnostic Rules for a Dry Bulb Economizer Mixed Air Loop

    E-Print Network [OSTI]

    Underwood, D.

    1990-01-01T23:59:59.000Z

    knowledge base for a two fan variable air volume (VAV) air handling unit. Rules for the mixed air loop with a dry bulb economizer are presented....

  8. Blue fan palm distribution and seed removal patterns in three desert oases of northern Baja California, Mexico

    E-Print Network [OSTI]

    Wehncke, Elisabet V.; López-Medellín, Xavier; Ezcurra, Exequiel

    2010-01-01T23:59:59.000Z

    DOI 10.1007/s11258-009-9682-4 Blue fan palm distribution anddistribution patterns of the blue fan palm, Brahea armata,evaluating (i) the levels of blue fan palm seed removal by

  9. Blue fan palm distribution and seed removal patterns in three desert oases of northern Baja California, Mexico

    E-Print Network [OSTI]

    Wehncke, Elisabet V.; López-Medellín, Xavier; Ezcurra, Exequiel

    2010-01-01T23:59:59.000Z

    9682-4 Blue fan palm distribution and seed removal patternsprocesses controlling the distribution patterns of relictrecruitment, and distribution patterns of the blue fan palm,

  10. Power Aware Page Allocation Alvin R. Lebeck Xiaobo Fan Heng Zeng

    E-Print Network [OSTI]

    Ellis, Carla

    CS 2000 08 Power Aware Page Allocation Alvin R. Lebeck Xiaobo Fan Heng Zeng Carla Ellis Department@cs.duke.edu Xiaobo Fan Dept. of Computer Science Duke University Durham, NC 27708 USA xiaobo@cs.duke.edu Heng Zeng

  11. Income Tax Deduction for Solar-Powered Roof Vents or Fans

    Broader source: Energy.gov [DOE]

    Indiana allows taxpayers to take a deduction on solar-powered roof fans (or vent, also sometimes called an attic fan) installed in a home that the taxpayer owns or leases. The deduction is for 50%...

  12. Laugh out loud in real life : women's humor and fan identity

    E-Print Network [OSTI]

    Klink, Madeline LeNore

    2010-01-01T23:59:59.000Z

    The emerging field of fan studies has, until recently, been defined only by the research that has taken place within it. Almost universally, this research focuses on self-identified fans. However, scholars are beginning ...

  13. Energy Conservation Standards for Ceiling Fan Light Kits Notice of Proposed Rulemaking

    Broader source: Energy.gov [DOE]

    Energy Conservation Program: Energy Conservation Standards for Ceiling Fan Notice of proposed rulemaking (NOPR) and announcement of public meeting.

  14. PhD position: Numerical study on ice accretion on fan blades and compressor stages

    E-Print Network [OSTI]

    Twente, Universiteit

    PhD position: Numerical study on ice accretion on fan blades and compressor stages Within on fan blades and compressor stages. This research is carried out in the framework of the HAIC (High a computational tool to predict the ice accretion on fan blades and the first compressor stages of commercial jet

  15. Fan Aerodynamic Performance Guarantees: Do Your Policies, Procedures and Penalties Provide Adequate Certainty?

    E-Print Network [OSTI]

    Kaufman, S. G.; Martin, V.; Falk, M. A.

    2004-01-01T23:59:59.000Z

    With few exceptions, fan vendors do not provide a written guarantee regarding aerodynamic performance. Some fan vendors even go so far as to state in their terms and conditions of sale that fan performance is not guaranteed unless it is specifically...

  16. Boost Converter Provides Temperature-Controlled Operation of 12V Fan from +5V Supply

    E-Print Network [OSTI]

    McNeill, John A.

    enclosure, and reducing the fan supply voltage when maximum cooling is not necessary. Reducing the operatingBoost Converter Provides Temperature-Controlled Operation of 12V Fan from +5V Supply John Mc converter shown in Fig. 1 allows operation of a 12V brushless DC fan from a +5V supply. The circuit is based

  17. The Forming of AISI 409 sheets for fan blade manufacturing

    SciTech Connect (OSTI)

    Foroni, F. D.; Menezes, M. A.; Moreira Filho, L. A. [ITA - Aeronautic Technological Institute, IEM, Praca Mal. Eduardo Gomes, 50 - Vila das Acacias - S. J. Campos, Brasil - CEP 1228-900 (Brazil)

    2007-04-07T23:59:59.000Z

    The necessity of adapting the standardized fan models to conditions of higher temperature has emerged due to the growth of concern referring to the consequences of the gas expelling after the Mont Blanc tunnel accident in Italy and France, where even though, with 100 fans in operation, 41 people died. The objective of this work is to present an alternative to the market standard fans considering a new technology in constructing blades. This new technology introduces the use of the stainless steel AISI 409 due to its good to temperatures of gas exhaust from tunnels in fire situation. The innovation is centered in the process of a deep drawing of metallic sheets in order to keep the ideal aerodynamic superficies for the fan ideal performance. Through the impression of circles on the sheet plane it is shown, experimentally, that, during the pressing process, the more deformed regions on the sheet plane of the blade can not reach the deformation limits of the utilized sheet material.

  18. The St. Louis Chapter, ASHRAE Newsletter VOLUME 23, NUMBER 6 http://www.ashrae-stl.org March 2006

    E-Print Network [OSTI]

    Missouri-Rolla, University of

    , retail, sports complexes, chiller installations, VAV systems, raised floor computer facilities, DDC

  19. ISSUANCE 2015-06-25: Energy Conservation Program: Energy Conservation Standards for Ceiling Fan Light Kits, Notice of Proposed Rulemaking

    Broader source: Energy.gov [DOE]

    Energy Conservation Program: Energy Conservation Standards for Ceiling Fan Light Kits, Notice of Proposed Rulemaking

  20. Analytical determination of PID coefficients for temperature and humidity control during cooling and dehumidifying by compressor and evaporator fan speed variation

    SciTech Connect (OSTI)

    Krakow, K.I.; Lin, S.; Zeng, Z.S. [Concordia Univ., Montreal, Quebec (Canada). Dept. of Mechanical Engineering

    1995-08-01T23:59:59.000Z

    A linearized analysis of temperature and relative humidity control using proportional-integral-differential (PID) controls to vary compressor motor speed and evaporator fan speed enables analytical determination of suitable PID coefficients. The PID coefficients are related to refrigeration system performance parameters and the volume of the conditioned space. Analytical determination of coefficients may eliminate or supplement trial-and-error methods. System response characteristics--damping ratios and periods--are related to PID coefficients, sampling intervals, performance parameters of a refrigeration system, and the volume of a conditioned space. Two control strategies are possible in order to control space temperature and relative humidity simultaneously. One strategy controls temperature by varying compressor speed and controls relative humidity by varying evaporator fan speed. The other strategy controls temperature by varying evaporator fan speed and controls relative humidity by varying compressor fan speed The first strategy was successfully implemented experimentally as well as by simulation. The second strategy was not successfully implemented due to an adverse interaction between the two control systems.

  1. Xudong Fan Curriculum Vitae Curriculum Vitae

    E-Print Network [OSTI]

    Fan, Xudong "Sherman"

    of the International Center for Nano/Micro Systems and Nanotechnology, University of Missouri, Columbia, MO 2005 ­ 12 ECCS 0936056 11/01/2009 ­ 10/31/2010 REU Role: PI Total costs: $6,000 NSF IOS 0946735 09/01/2009 ­ 08

  2. Air-bridge microcavities Pierre R. Villeneuve, Shanhui Fan, and J. D. Joannopoulos

    E-Print Network [OSTI]

    Fan, Shanhui

    Air-bridge microcavities Pierre R. Villeneuve, Shanhui Fan, and J. D. Joannopoulos Department structures with micron-sized features using semiconductor materials. © 1995 American Institute of Physics

  3. Qualification of Fan Generated Duct Rumble Noise: Part 2: Results (RP 1219)

    E-Print Network [OSTI]

    Kading, J.; Mann, A.; Pate, M.B.

    represented the closest to the ideal configuration. REMOVING TONES In the cases where the sound levels were low, tones enter- ing the sound measurements from the fan and motor vibration were a concern. This issue was remedied by removing the tones from... is not permitted without ASHRAE’s prior written permission. ESL-PA-08-06-09 Published in ASHRAE Transactions Vol. 114, Part 2 36 ASHRAE Transactions 3. Redesign the fan and motor support structure to reduce vibration. 4. Study additional fans and select fans...

  4. Model Predictive Control Approach to Online Computation of Demand-Side Flexibility of Commercial Buildings HVAC Systems for Supply Following

    E-Print Network [OSTI]

    Maasoumy, Mehdi

    2014-01-01T23:59:59.000Z

    of commercial building HVAC fan as ancillary service foralgorithm design for hvac systems in energy efficientoptimal control design for HVAC systems,” in Dynamic System

  5. STATE OF CALIFORNIA SPACE CONDITIONING SYSTEMS, DUCTS AND FANS

    E-Print Network [OSTI]

    , crawl- space, etc.) Duct R-value Heating Load (Btu/hr) Heating Capacity (Btu/hr) Equip Type (package Load (Btu/hr) Cooling Capacity (Btu/hr) 1. If project is new construction, see Footnotes to Standards

  6. Improving Fan System Performance: A Sourcebook for Industry | Department of

    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:DepartmentDepartment of Energy ImplementingBasis Events

  7. Fan System Assessment Tool Fact Sheet | 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 in RepresentativeDepartmentEnergy Factors Affecting PMUNuclearFAIRFall:Fact

  8. Fan System Assessment Tool User Manual | 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 in RepresentativeDepartmentEnergy Factors Affecting

  9. Supply Fan Control for Constant Air Volume Air Handling Units

    E-Print Network [OSTI]

    Cho, Y.; Wang, G.; Liu, M.

    2007-01-01T23:59:59.000Z

    there is fixed VFD speed, as shown in Table 1 and Figure 11. On the other hand, the energy consumption is 3,896,493 Btu/hr when there is dynamic VFD speed. The thermal energy consumption of dynamic VFD speed is less than that of the fixed VFD speed by 44... %. Therefore, when the supply fan speed control is optimized, thermal energy can be reduced. Table 1. Comparison data of thermal energy consumption Floor Fixed VFD speed (Btu/hr) Dynamic VFD speed (Btu/hr) Energy saving (%) PLF 784,891 502,611 36...

  10. Shanghai Fan Qie Trading Ltd | 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 YouKizildere IRaghuraji Agro Industries Pvt Ltd JumpInformationScottsOklahoma:SevinShamil AyntraziLTD JumpFan Qie

  11. Photo of the Week: Fan-tastic | 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 offOCHCO Overview OCHCO Overview OCHCO OCHCOControlGuide to a BalancedPersonnelFan-tastic Photo of

  12. Property:Building/SPElectrtyUsePercCirculationFans | Open Energy

    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,Pillar Group BV JumpInformation SPElectrtyUsePercCirculationFans Jump to:

  13. Property:Building/SPElectrtyUsePercFans | 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 Jump to: navigation,Pillar Group BV JumpInformationSPElectrtyUsePercFans Jump to: navigation,

  14. Cost effective combined axial fan and throttling valve control of ventilation rate

    E-Print Network [OSTI]

    Sengun, Mehmet Haluk

    Cost effective combined axial fan and throttling valve control of ventilation rate C.J. Taylor 1 P with Proportional-Integral-Plus (PIP) control of ventilation rate in mechanically ventilated agricultural buildings ventilation. The new combined fan/valve configuration is compared with a commercially available PID

  15. Effect of Nozzle Geometry on Jet Noise Reduction Using Fan Flow Deflectors

    E-Print Network [OSTI]

    Papamoschou, Dimitri

    or sideforce p = pressure q = dynamic pressure S = wedge wetted area u = mean velocity in jet plume U = nozzleEffect of Nozzle Geometry on Jet Noise Reduction Using Fan Flow Deflectors Dimitri Papamoschou of baseline nozzle shape on the ability of fan flow deflectors to reduce downward-emitted turbulent mixing

  16. STATE OF CALIFORNIA HSPP/PSPP INSTALLATION; COOLING COIL AIRFLOW & FAN WATT DRAW TEST

    E-Print Network [OSTI]

    STATE OF CALIFORNIA HSPP/PSPP INSTALLATION; COOLING COIL AIRFLOW & FAN WATT DRAW TEST CEC- CF-4R TESTING CF-4R-MECH-22 HSPP/PSPP Installation; Cooling Coil Airflow & Fan Watt Draw Test (Page 1 of 3) Site of a Static Pressure Probe (HSPP), and Permanently installed Static Pressure Probe (PSPP) in the supply plenum

  17. STATE OF CALIFORNIA HSPP/PSPP INSTALLATION; COOLING COIL AIRFLOW & FAN WATT DRAW TEST

    E-Print Network [OSTI]

    STATE OF CALIFORNIA HSPP/PSPP INSTALLATION; COOLING COIL AIRFLOW & FAN WATT DRAW TEST CEC-CF-6R/PSPP Installation; Cooling Coil Airflow & Fan Watt Draw Test (Page 1 of 3) Site Address: Enforcement Agency: Permit), and Permanently installed Static Pressure Probe (PSPP) in the supply plenum When the Certificate of Compliance (CF

  18. The Spacing of Ceiling Fans for Human Comfort in Warm Temperature Conditions

    E-Print Network [OSTI]

    Spain, S.

    1987-01-01T23:59:59.000Z

    THE SPACING OF CEILING FANS FOR HUMAN COMFORT IN WARM TEMPERATURE CONDITIONS Syd Spain, Ph.D. Research Specialist CRS Sirrine, Inc. Houston, Tx ABSTRACT Airspeed tests of a commerci a1 1 y popular 52 in. ceiling fan operating at a low speed...

  19. Inlet swirl distortion effects on the generation and propagation of fan rotor shock noise

    E-Print Network [OSTI]

    Defoe, Jeff (Jeffrey James)

    2011-01-01T23:59:59.000Z

    A body-force-based fan model for the prediction of multiple-pure-tone noise generation is developed in this thesis. The model eliminates the need for a full-wheel, three-dimensional unsteady RANS simulation of the fan blade ...

  20. air conditioning system: Topics by E-print Network

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

    may be eliminated. Physical principals governing airflow in fan systems predict available energy savings from using premium air filters. This energy savings may offset the...

  1. air conditioning systems: Topics by E-print Network

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

    may be eliminated. Physical principals governing airflow in fan systems predict available energy savings from using premium air filters. This energy savings may offset the...

  2. Statistic inversion of multi-zone transition probability models for aquifer characterization in alluvial fans

    E-Print Network [OSTI]

    Zhu, Lin; Gong, Huili; Gable, Carl; Teatini, Pietro

    2015-01-01T23:59:59.000Z

    Understanding the heterogeneity arising from the complex architecture of sedimentary sequences in alluvial fans is challenging. This paper develops a statistical inverse framework in a multi-zone transition probability approach for characterizing the heterogeneity in alluvial fans. An analytical solution of the transition probability matrix is used to define the statistical relationships among different hydrofacies and their mean lengths, integral scales, and volumetric proportions. A statistical inversion is conducted to identify the multi-zone transition probability models and estimate the optimal statistical parameters using the modified Gauss-Newton-Levenberg-Marquardt method. The Jacobian matrix is computed by the sensitivity equation method, which results in an accurate inverse solution with quantification of parameter uncertainty. We use the Chaobai River alluvial fan in the Beijing Plain, China, as an example for elucidating the methodology of alluvial fan characterization. The alluvial fan is divided...

  3. Model Based Commissioning Tool for Air-Conditioning Distribution Systems-APCBC

    E-Print Network [OSTI]

    Yoshida, H.; Noda, T.

    2014-01-01T23:59:59.000Z

    on Building Commissioning) Sept. 2014, Beijing, China ESL-IC-14-09-06 Proceedings of the 14th International Conference for Enhanced Building Operations, Beijing, China, September 14-17, 2014 1. Issues 2. Simulation Model of Distribution System 3. Example... of VWV System 4. Example of VAV System 5. Conclusions 2 ESL-IC-14-09-06 Proceedings of the 14th International Conference for Enhanced Building Operations, Beijing, China, September 14-17, 2014 ? Energy consumption of air and water distribution in air...

  4. SPEECH NOISE ESTIMATION USING ENHANCED MINIMA CONTROLLED RECURSIVE Ningping Fan, Justinian Rosca, Radu Balan

    E-Print Network [OSTI]

    Balan, Radu V.

    , Justinian Rosca, Radu Balan Siemens Corporate Research Inc. {Ning.Fan, Justinian.Rosca, Radu.Balan}@siemens speech samples are organized as overlapped frames and each frame is transformed into spectral domain

  5. High-amplitude reflection packets (HARPs) of the Mississippi Fan, Gulf of Mexico

    E-Print Network [OSTI]

    Francis, Jason Michael

    2000-01-01T23:59:59.000Z

    sediment volumes. Mississippi Fan HARP deposition can be described by three depositional models: the "avulsion" model, the "fill and spill" model, and the "transition" model. The "avulsion" depositional model, developed by Flood et al. (1991), describes...

  6. Performance characteristics of a low pressure cyclone for axial-flow fan exhausts

    E-Print Network [OSTI]

    Simpson, Shay Lynn

    1996-01-01T23:59:59.000Z

    on axial-flow fan exhausts to significantly reduce particulate emissions. Average emission concentrations, cut-point diameters, PMIO emission concentrations, and fractional efficiencies from this cyclone operating at different cyclone inlet velocities...

  7. 2014-10-27 Issuance: Test Procedure for Ceiling Fan Light Kits...

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

    as a means to facilitate the public's access to this document. 2014-10-27 Issuance Test Procedure Ceiling Fan Light Kits NOPR.pdf More Documents & Publications 2014-10-27...

  8. Fan-Speed-Aware Scheduling of Data Intensive Jobs Christine S. Chan

    E-Print Network [OSTI]

    Simunic, Tajana

    of service level agreement (SLA). At the facility level, heating, ventilating and air conditioning (HVAC market servers) additionally over-provision fan subsystems to maintain a low set point. As recently

  9. Development of models for series and parallel fan variable air volume terminal units

    E-Print Network [OSTI]

    Furr, James C., Jr

    2007-09-17T23:59:59.000Z

    Empirical models of airflow output and power consumption were developed for series and parallel fan powered variable air volume terminal units at typical design pressure conditions. A testing procedure and experimental setup were developed to test...

  10. Processes and Forms of Alluvial Fans Terence C. Blair and John G. McPherson

    E-Print Network [OSTI]

    -central Africa, the Middle East, Iran, Pakistan, India, China, and Mon- golia. The growth of fan research has increased in other arid and semi-arid regions, including in Peru, Argentina, Chile, southern Europe, east

  11. A Distributed Database Server for Continuous Media W.G. Aref, A.C. Catlin, A.K. Elmagarmid, J. Fan, J. Guo, M. Hammad, I.F. Ilyas, M.S. Marzouk,

    E-Print Network [OSTI]

    Tu, Yicheng

    A Distributed Database Server for Continuous Media£ W.G. Aref, A.C. Catlin, A.K. Elmagarmid, J. Fan://www.cs.purdue.edu/icds 1. Introduction In our project, we adopt a new approach for handling video data. We view the video as a well-defined data type with its own description, parameters, and applicable methods. The system

  12. The distribution and composition of organic matter in recent deltaic and submarine fan sediments

    E-Print Network [OSTI]

    DeFreitas, Debra Ann

    1988-01-01T23:59:59.000Z

    THE DISTRIBUTION AND COMPOSITION OF ORGANIC MATTER IN RECFNT DELTAIC AND SUBMARINE FAN SEDIMENTS A Thesis by DEBRA ANN DEFREITAS Submitted to the Graduate College of Texas A&N University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE May 1988 Major Subject: Oceanography THE DISTRIBUTION AND COMPOSITION OF ORGANIC MATTER IN RECENT DELTAIC AND SUBMARINE FAN SEDIMENTS A Thesis by DEBRA ANN DEFREITAS Approved as to style and content by: James M. Bro...

  13. Modeling of Electronically Commutated Motor Controlled Fan-powered Terminal Units

    E-Print Network [OSTI]

    Edmondson, Jacob Lee

    2011-02-22T23:59:59.000Z

    MODELING OF ELECTRONICALLY COMMUTATED MOTOR CONTROLLED FAN-POWERED TERMINAL UNITS A Thesis by JACOB LEE EDMONDSON 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 December 2009 Major Subject: Mechanical Engineering MODELING OF ELECTRONICALLY COMMUTATED MOTOR CONTROLLED FAN-POWERED TERMINAL UNITS A Thesis by JACOB LEE EDMONDSON Submitted to the Office...

  14. THE SOURCE OF 3 MINUTE MAGNETOACOUSTIC OSCILLATIONS IN CORONAL FANS

    SciTech Connect (OSTI)

    Jess, D. B.; Mathioudakis, M.; Reardon, K. P.; Keys, P. H.; Keenan, F. P. [Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN (United Kingdom); De Moortel, I. [School of Mathematics and Statistics, University of St Andrews, St Andrews KY16 9SS (United Kingdom); Christian, D. J., E-mail: d.jess@qub.ac.uk [Department of Physics and Astronomy, California State University Northridge, Northridge, CA 91330 (United States)

    2012-10-01T23:59:59.000Z

    We use images of high spatial, spectral, and temporal resolution, obtained using both ground- and space-based instrumentation, to investigate the coupling between wave phenomena observed at numerous heights in the solar atmosphere. Analysis of 4170 A continuum images reveals small-scale umbral intensity enhancements, with diameters {approx}0.''6, lasting in excess of 30 minutes. Intensity oscillations of Almost-Equal-To 3 minutes are observed to encompass these photospheric structures, with power at least three orders of magnitude higher than the surrounding umbra. Simultaneous chromospheric velocity and intensity time series reveal an 87 Degree-Sign {+-} 8 Degree-Sign out-of-phase behavior, implying the presence of standing modes created as a result of partial wave reflection at the transition region boundary. We find a maximum waveguide inclination angle of Almost-Equal-To 40 Degree-Sign between photospheric and chromospheric heights, combined with a radial expansion factor of <76%. An average blueshifted Doppler velocity of Almost-Equal-To 1.5 km s{sup -1}, in addition to a time lag between photospheric and chromospheric oscillatory phenomena, confirms the presence of upwardly propagating slow-mode waves in the lower solar atmosphere. Propagating oscillations in EUV intensity are detected in simultaneous coronal fan structures, with a periodicity of 172 {+-} 17 s and a propagation velocity of 45 {+-} 7 km s{sup -1}. Numerical simulations reveal that the damping of the magnetoacoustic wave trains is dominated by thermal conduction. The coronal fans are seen to anchor into the photosphere in locations where large-amplitude umbral dot (UD) oscillations manifest. Derived kinetic temperature and emission measure time series display prominent out-of-phase characteristics, and when combined with the previously established sub-sonic wave speeds, we conclude that the observed EUV waves are the coronal counterparts of the upwardly propagating magnetoacoustic slow modes detected in the lower solar atmosphere. Thus, for the first time, we reveal how the propagation of 3 minute magnetoacoustic waves in solar coronal structures is a direct result of amplitude enhancements occurring in photospheric UDs.

  15. Quantum Addition Circuits and Unbounded Fan-Out

    E-Print Network [OSTI]

    Yasuhiro Takahashi; Seiichiro Tani; Noboru Kunihiro

    2009-10-14T23:59:59.000Z

    We first show how to construct an O(n)-depth O(n)-size quantum circuit for addition of two n-bit binary numbers with no ancillary qubits. The exact size is 7n-6, which is smaller than that of any other quantum circuit ever constructed for addition with no ancillary qubits. Using the circuit, we then propose a method for constructing an O(d(n))-depth O(n)-size quantum circuit for addition with O(n/d(n)) ancillary qubits for any d(n)=\\Omega(log n). If we are allowed to use unbounded fan-out gates with length O(n^c) for an arbitrary small positive constant c, we can modify the method and construct an O(e(n))-depth O(n)-size circuit with o(n) ancillary qubits for any e(n)=\\Omega(log* n). In particular, these methods yield efficient circuits with depth O(log n) and with depth O(log* n), respectively. We apply our circuits to constructing efficient quantum circuits for Shor's discrete logarithm algorithm.

  16. Measuring temperature-dependent propagating disturbances in coronal fan loops using multiple SDO/AIA channels and the surfing transform technique

    SciTech Connect (OSTI)

    Uritsky, Vadim M.; Ofman, Leon [Catholic University of America, Washington, D.C. 20064 (United States); Davila, Joseph M.; Viall, Nicholeen M. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

    2013-11-20T23:59:59.000Z

    A set of co-aligned high-resolution images from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory is used to investigate propagating disturbances (PDs) in warm fan loops at the periphery of a non-flaring active region NOAA AR 11082. To measure PD speeds at multiple coronal temperatures, a new data analysis methodology is proposed enabling a quantitative description of subvisual coronal motions with low signal-to-noise ratios of the order of 0.1%. The technique operates with a set of one-dimensional 'surfing' signals extracted from position-time plots of several AIA channels through a modified version of Radon transform. The signals are used to evaluate a two-dimensional power spectral density distribution in the frequency-velocity space that exhibits a resonance in the presence of quasi-periodic PDs. By applying this analysis to the same fan loop structures observed in several AIA channels, we found that the traveling velocity of PDs increases with the temperature of the coronal plasma following the square-root dependence predicted for slow mode magneto-acoustic waves which seem to be the dominating wave mode in the loop structures studied. This result extends recent observations by Kiddie et al. to a more general class of fan loop system not associated with sunspots and demonstrating consistent slow mode activity in up to four AIA channels.

  17. Building Energy Monitoring and Analysis

    E-Print Network [OSTI]

    Hong, Tianzhen

    2014-01-01T23:59:59.000Z

    Water?cooled chiller,  district heating,  VAV + CAV systems Decentralized AC   for cooling,  district heating  District cooling,  district heating,   VAV systems  iSagy  iSagy 

  18. LETTER REPORT INDEPENDENT VERIFICATION OF THE HIGH FLUX BEAM REACTOR DECOMMISSIONING PROJECT FAN HOUSE, BUILDING 704 BNL

    SciTech Connect (OSTI)

    P.C. Weaver

    2010-10-22T23:59:59.000Z

    5098-LR-01-0 -LETTER REPORT INDEPENDENT VERIFICATION OF THE HIGH FLUX BEAM REACTOR DECOMMISSIONING PROJECT FAN HOUSE, BUILDING 704 BROOKHAVEN NATIONAL LABORATORY

  19. Air-Side Energy Use Calculations for Four HVAC Systems: Dual Duct Constant Volume (DDCAV), Dual Duct Variable Volume (DDVAV), Constant Volume with Reheat (CAVRH), Variable Volume with Reheat (VAVRH), Four Pipe Fan Coil Unit (FC), Four Pipe Induction Unit (FI), and Single Zone (SZ) Systems, Revised June 2002

    E-Print Network [OSTI]

    Haberl, J. S.; Bou-Saada, T. E.; Saman, N. F.

    2001-01-01T23:59:59.000Z

    This report contains engineering calculations for seven (7) air-side, heating, ventilating and air conditioning systems (HVAC) systems, including: dual duct constant volume (DDCAV), dual duct variable volume (DDVAV), constant volume with reheat...

  20. Qualification of Fan Generated Duct Rumble Noise: Part 1: Test Facility(RP 1219)

    E-Print Network [OSTI]

    Kading, J.; Mann, A.; Pate, M.B.

    the transition duct from break in noise from the fan room. The fiberglass insulation on the inside of the box was suspended against the MDF in order to limit any vibration damping that might occur if the insula- tion touched the duct. The duct work continued... mounted to a base. The mounting base was a double steel strut that held the fan and motor assemble together. The mounting base had six vibration isolation springs that it supported by. The four corner springs were 800 lb, 1” isolation springs, the middle...

  1. A study of the effect of tip clearance on propeller fan performance

    E-Print Network [OSTI]

    Alam, Md. Shamsul

    1959-01-01T23:59:59.000Z

    Coefficient VI, Xf feet of Tip Clearance on Static Pressure for Given Capacity Coefficients 61 FIGURES Figure Title 1. Two Dimensional Flow through Airfoil Blade Grid 2. Velocity Diagram for an Axial Flow Fan 3. Single Stage Axial Flow Won... RIIOCR~CZi~ I OOB0 1. 0oOO I 57 possible clearance depending upon the flow conditions. Recently, Spencer hss investigated the effect of tip clearance on the performance of an axial flow pump. The findings of this thesis for axial fan confirm his...

  2. A combined mode fatigue model for glass reinforced nylon as applied to molded engine cooling fans

    SciTech Connect (OSTI)

    Smith, J.D.; Bennet, M.L.

    1985-01-01T23:59:59.000Z

    The use of glass reinforced nylon in fatigue inducing environments calls for a new method of stress analysis. With an engine cooling fan, both mean and vibratory stresses need to be examined. Speed cycling can cause tensile fatigue, while vibration can cause flexural fatigue. Since tensile and flexural stresses exist in the fan simultaneously, a combined mode fatigue model is needed. The proposed model is based on high cycle flexural and tensile fatigue strengths, and tensile strength. It relates measurable strain to stress using temperature dependent flexural and tensile moduli, and treats underhood temperature and desired product life as variables.

  3. Development of In-Situ Fan Curve Measurement with One Airflow Measurement

    E-Print Network [OSTI]

    Liu, G.; Joo, I. S.; Song, L.; Liu, M.

    2003-01-01T23:59:59.000Z

    air duct. Theoretically this is an excellent solution. But it is very difficult to accurately measure such small static pressure differences as those required for building pressurization (typically 0 Pa (0.00 in. w.g.) to 25 Pa (0.10 in. w... method. The unit serves most of a 247,000 square feet office building in Omaha. The building has two main single duct variable air volume AHUs. Variable frequency drives are installed for each main AHU supply fan (2X125hp) and return air fan (3X40...

  4. Best Practices for Energy Efficient Cleanrooms: Fan-Filter Tengfang Xu

    E-Print Network [OSTI]

    LBNL-58639 Best Practices for Energy Efficient Cleanrooms: Fan-Filter Units Tengfang Xu June 15 by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Building Technology, U.S. Department of Energy under Contract No. DE-AC02-05CH11231. #12;Best Practice for Energy Efficient Cleanrooms

  5. Sequence stratigraphy, facies architecture and reservoir distribution, Cretaceous lowstand fan reservoirs, Southern Basin, onshore Trinidad

    SciTech Connect (OSTI)

    Sprague, A.R.; Larue, D.K.; Faulkner, B.L. [Exxon Production Research Company, Houston, TX (United States)] [and others

    1996-08-01T23:59:59.000Z

    Thick Albian-Campanian mass-flow sandstones in the Southern Basin Trinidad were deposited within submarine canyons incised into the northern continental slope of South America and as associated down-dip basin-floor lowstand fans. The contemporaneous slope to basin-floor break lay across the Southern Basin area with turbidity current paleoflow being to the northwest. North of this paleo-slope break graded to massive, channelized, high-density turbidite sandstones occur interstratified with shaly overbank and channel abandonment deposits. A progression of depositional sub-environments from proximal through distal lowstand fan can be recognized. All fine and thin upward but can be discriminated by the occurrence of slumps, debris flows and conglomerates, the grain-size and bedding scale of sandstones and the characteristics of low-density turbidites and mudrocks. South of the paleo-slope break mass-flow deposits comprise muddy slumps and debris flows rich in granules and pebbles deposited in slope canyons. During periods of turbidity current by-pass or fan abandonment hemipelagic settling processes predominated. Reservoir distribution maps of these lowstand fans have been constructed utilizing geometric constraints, analogs and paleoslope determinations from oriented core. The interpreted canyon locations and orientations are key to the understanding of reservoir distribution on the basin-floor tract to the north: a vital component in the exploration of the basin.

  6. Carbon Contamination Topography Analysis of EUV Masks Yu-Jen Fan1

    E-Print Network [OSTI]

    Carbon Contamination Topography Analysis of EUV Masks Yu-Jen Fan1 , Leonid Yankulin1 , Petros ABSTRACT The impact of carbon contamination on extreme ultraviolet (EUV) masks is significant due to throughput loss and potential effects on imaging performance. Current carbon contamination research primarily

  7. Seconder's discussion of "Large covariance estimation by thresholding principal orthogonal complements" by Fan, Liao

    E-Print Network [OSTI]

    Fryzlewicz, Piotr

    Professors Fan, Liao and Mincheva for the stimu- lating and thought-provoking article. The POET estimator verify this model assumption, and secondly, whether POET offers acceptable performance if the assumption from the point of view of the usability of POET: the authors warn us that POET may perform poorly if K

  8. Energy Conservation Program for Consumer Products: Test Procedures for Residential Furnaces Fans; Correction

    Broader source: Energy.gov [DOE]

    On January 3, 2014 the U.S. Department of Energy (DOE) published a final rule in the Federal Register that established the test procedure for residential furnace fans. Due to drafting errors, that document inadvertently removed necessary incorporation by reference material in the Code of Federal Regulations (CFR). This final rule rectifies this error by once again adding the removed material.

  9. CHANGES IN SANDSTONE DISTRIBUTIONS BETWEEN THE UPPER, MIDDLE, AND LOWER FAN IN THE ARKANSAS JACKFORK GROUP 

    E-Print Network [OSTI]

    Mack, Clayton P.

    2010-07-14T23:59:59.000Z

    is deposited moderately even and is quite concentrated throughout the exposure. The middle fan outcrops contain approximately 72.6% sandstone and show similar patterns, except that the amalgamated sandstone beds are not as thick, 5-15m and contain more shale...

  10. Performance Analysis of Dual-Fan, Dual-Duct Constant Volume Air-Handling Units

    E-Print Network [OSTI]

    Joo, I. S.; Liu, M.

    2001-01-01T23:59:59.000Z

    Dual-fan, dual-duct air-handling units introduce outside air directly into the cooling duct and use two variable speed devices to independently maintain the static pressure of the hot and the cold air ducts. Analytical models have been developed...

  11. Infrared Imaging Solar Spectrograph at Purple Mountain Observatory Hui Li , Zhongyu Fan and Jianqi You

    E-Print Network [OSTI]

    Li, Hui

    Infrared Imaging Solar Spectrograph at Purple Mountain Observatory Hui Li , Zhongyu Fan and Jianqi, Chinese Academy of Sciences Abstract. Since 1986, we have made some improvements to the multichannel solar to it a multichannel infrared imaging solar spectrograph. The original spectrograph can be used to observe

  12. P-type SiGe/Si Superlattice Cooler Xiaofeng Fan, Gehong Zeng, Edward Croke1

    E-Print Network [OSTI]

    P-type SiGe/Si Superlattice Cooler Xiaofeng Fan, Gehong Zeng, Edward Croke1 , Gerry Robinson, Chris and characterization of single element p-type SiGe/Si superlattice coolers are described. Superlattice structures were]. SiGe is a good thermoelectric material especially for high temperature applications [11

  13. Building Energy Information Systems: State of the Technology and User Case Studies

    E-Print Network [OSTI]

    Granderson, Jessica

    2010-01-01T23:59:59.000Z

    Diagnostic trends of VAV zone temperatures HVAC 0200 - 4 1trend points. Each day eight person hours are dedicated to building-by-building HVAC

  14. Finding the largest low-rank clusters with Ky Fan 2-k-norm and l1-norm

    E-Print Network [OSTI]

    Xuan Vinh Doan

    2014-03-24T23:59:59.000Z

    Mar 24, 2014 ... Abstract: We propose a convex optimization formulation with the Ky Fan 2-k-norm and l1-norm to fi nd k largest approximately rank-one ...

  15. Security and Fault-tolerance in Distributed Systems ETHZ, Spring 2012 Christian Cachin, IBM Research -Zurich www.zurich.ibm.com/~cca/

    E-Print Network [OSTI]

    Cachin, Christian

    , reduced airflow = error, no cooling = failure. · Power supply system: no cooling = fault, overheating, fan in power supply congested by dust, airflow massively reduced, fan not effective, power supply = error, loss of power = failure. · Computer system: broken power supply = fault, no power on mainboard

  16. Security and Fault-tolerance in Distributed Systems ETHZ, Spring 2013 Christian Cachin, IBM Research -Zurich www.zurich.ibm.com/~cca/

    E-Print Network [OSTI]

    Cachin, Christian

    , reduced airflow = error, no cooling = failure. · Power supply system: no cooling = fault, overheating, fan in power supply congested by dust, airflow massively reduced, fan not effective, power supply = error, loss of power = failure. · Computer system: broken power supply = fault, no power on mainboard

  17. N-AND P-TYPE SiGe/Si SUPERLATTICE COOLERS Xiaofeng Fan, Gehong Zeng, Edward Croke

    E-Print Network [OSTI]

    N- AND P-TYPE SiGe/Si SUPERLATTICE COOLERS Xiaofeng Fan, Gehong Zeng, Edward Croke a) , Gerry, 95064 Phone: (805) 893-4235 Fax: (805) 893-7990 Email: fan@opto.ece.ucsb.edu ABSTRACT SiGe is a good of single-element SiGe/Si superlattice coolers of both n- and p-type devices are described for room

  18. Depositional processes and facies of Trail Fan sandflat: Death Valley, California

    SciTech Connect (OSTI)

    Malicse, A.E.; Mazzullo, J.M.; Eide, M.G. (Texas A and M Univ., College Station, TX (United States))

    1992-01-01T23:59:59.000Z

    A study was conducted of the alluvial fan to playa transition along Trail fan in Death Valley, California with the primary objectives of documenting sedimentary facies and textural features of so-called arid region sandflat. The study involved description of sedimentary structures along trenches and meter-deep cores, description of surficial bedforms, and collection of samples for lithological analyses. Surficial features of Trail Fan sandflat gradually change downdip as a function of texture, ground water depth, and runoff. They include: (1) tongues of mudflows; (2) shallow braided channels that taper out into mudflat or coalesced into single channels; (3) puffy grounds; and (4) flat-smooth surface of the mudflat. The sediment's texture shows a fining downdip trend except when the surface are draped by mudflows. Four facies are distinguished downdip from the alluvial fan to playa mudflat. Facies 1 consists of massive, light gray, matrix to grain supported gravel, and is interpreted as debris flow or streamflow deposit. Facies 2 consists of thin-bedded (0.6--0.06 m), tan, massive, gravelly mud and is interpreted as mudflow deposit. Facies 2 consists of repeated sequences of thick-bedded (0.15 to 0.3 m), massive to planar stratified, graveliferous sand with mud drape and is interpreted as poorly sorted sheetflood or streamflow deposit. Facies 4 consist of light gray, planar laminated, coarsening upward mud to muddy sand, and is interpreted as mudflat facies. This study shows that arid region sandflat facies is a mosaic of mudflow, debris flow, sheetflood and streamflow deposits and is more complex than previous sandflat models described.

  19. IBM and Energy Efficiency: Systems Recommisiong and Optimization

    E-Print Network [OSTI]

    Veilleux, Y.; Boulianne, J. P.; Lefebvre, P.

    2013-01-01T23:59:59.000Z

    for optimal operation ? HVAC motor fans: Vriable speed drives (VFD) installation on air supply and return fans. Humidification System OptimizationBefore After TEMP-HUM:M2:2-46-545.pv % HR HVAC:M2-RDC-PLA:VLV-HUM.pv % SPECS HUMIDIT? MINIMUM.Value Plot... instruments added to meet control requirements. PID control loop tuning was performed for optimal operation. Measures resulted in reducing the cooling and heating required for the systems as well as the electrical load on the fan motors. Some operational...

  20. Design, testing and two-dimensional flow modeling of a multiple-disk fan

    SciTech Connect (OSTI)

    Engin, Tahsin; Oezdemir, Mustafa; Cesmeci, Sevki [Department of Mechanical Engineering, The University of Sakarya, Esentepe Campus, 54187 Sakarya (Turkey)

    2009-11-15T23:59:59.000Z

    A multiple-disk Tesla type fan has been designed, tested and analyzed two-dimensionally using the conservation of angular momentum principle. Experimental results showed that such multiple-disk fans exhibited exceptionally low performance characteristics, which could be attributed to the low viscosity, tangential nature of the flow, and large mechanical energy losses at both suction and discharge sections that are comparable to the total input power. By means of theoretical analysis, local and overall shearing stresses on the disk surfaces have been determined based on tangential and radial velocity distributions of the air flow of different volume flow rates at prescribed disk spaces and rotational speeds. Then the total power transmitted by rotating disks to air flow, and the power acquired by the air flow in the gap due to transfer of angular momentum have been obtained by numerically integrating shearing stresses over the disk surfaces. Using the measured shaft and hydraulic powers, these quantities were utilized to evaluate mechanical energy losses associated with the suction and discharge sections of the fan. (author)

  1. On fan-shaped cold MHD winds from Keplerian accretion discs

    E-Print Network [OSTI]

    Ferreira, Jonathan

    2012-01-01T23:59:59.000Z

    We investigate under which conditions cold, fan-shaped winds can be steadily launched from thin (Keplerian) accretion discs. Such winds are magneto-centrifugal winds launched from a thin annulus in the disc, along open magnetic field lines that fan out above the disc. In principle, such winds could be found in two situations: (1) at the interface between an inner Jet Emitting Disc, which is itself powering magneto-centrifugally driven winds, and an outer standard accretion disc; (2) at the interface between an inner closed stellar magnetosphere and the outer standard accretion disc. We refer to Terminal or T-winds to the former kind and to Magnetospheric or M-winds to the latter. The full set of resistive and viscous steady state MHD equations are analyzed for the disc (the annulus), which allow us to derive general expressions valid for both configurations. We find that, under the framework of our analysis, the only source of energy able to power any kind of fan-shaped winds is the viscous transport of rotat...

  2. Improving the Water Efficiency of Cooling Production System

    E-Print Network [OSTI]

    Maheshwari, G.; Al-Hadban, Y.; Al-Taqi, H. H.; Alasseri, R.

    2010-01-01T23:59:59.000Z

    For most of the time, cooling towers (CTs) of cooling systems operate under partial load conditions and by regulating the air circulation with a variable frequency drive (VFD), significant reduction in the fan power can be achieved. In Kuwait...

  3. The effects of immunosuppression on the pathogenicity of viral arthritis virus of chickens

    E-Print Network [OSTI]

    Pugh, Roberta Ann

    1979-01-01T23:59:59.000Z

    at hatching was appl1ed to block the thymus dependent-cellular func- tions of the immune system. Following these treatments chicks were inoculated with VAU. These three groups were designated as VAV-Cy, VAV- IBDV, and VAV-Rad groups, respect1vely. Two add1... be explained as resulting from viral infect1on and subsequent production of antibodies speci- f1c to VAV. Increased levels of gamma globulins in VAV-Rad treated birds can be similarly expla1ned. However, s1gnif1cantly (P & 0. 05) 1ncreased gamma globul1ns...

  4. Analysis of the ventilation systems in the Dartford tunnels using a multiscale modelling approach 

    E-Print Network [OSTI]

    Colella, Francesco; Rein, Guillermo; Carvel, Ricky O; Reszka, Pedro; Torero, Jose L

    2010-01-01T23:59:59.000Z

    The capabilities of the ventilation systems in the two road tunnels at Dartford (London, UK) are analysed using a multi-scale modelling approach. Both tunnels have complex semi-transverse ventilation systems with jet fans to control longitudinal...

  5. Variable Speed Drive (VSD) Applications in Dual-Duct Constant Volume Systems

    E-Print Network [OSTI]

    Joo, I.; Liu, M.; Conger, K.; Wang, G.

    2002-01-01T23:59:59.000Z

    Models have been developed for static pressure and potential supply fan energy savings by using variable speed drive (VSD) in dual-duct constant volume systems. Experiments have been performed using a full size dual-duct constant volume system...

  6. Recent Developments of the Modelica"Buildings" Library for Building Energy and Control Systems

    SciTech Connect (OSTI)

    Wetter, Michael; Zuo, Wangda; Nouidui, Thierry Stephane

    2011-04-01T23:59:59.000Z

    At the Modelica 2009 conference, we introduced the Buildings library, a freely available Modelica library for building energy and control systems. This paper reports the updates of the library and presents example applications for a range of heating, ventilation and air conditioning (HVAC) systems. Over the past two years, the library has been further developed. The number of HVAC components models has been doubled and various components have been revised to increase numerical robustness.The paper starts with an overview of the library architecture and a description of the main packages. To demonstrate the features of the Buildings library, applications that include multizone airflow simulation as well as supervisory and local loop control of a variable air volume (VAV) system are briefly described. The paper closes with a discussion of the current development.

  7. Concentrating Electric and Thermal Fields Simultaneously Using Fan-shaped Structure

    E-Print Network [OSTI]

    Lan, Chuwen; Zhou, Ji

    2015-01-01T23:59:59.000Z

    Recently, considerable attention has been focused on the transformation optics and metamaterial due to their fascinating phenomena and potential applications. Concentrator is one of the most representative ones, which however is limited in single physical domain. Here we propose and give the experimental demonstration of bifunctional concentrator that can concentrate electric and thermal fields into a given region simultaneously while keeping the external fields undistorted. Fan-shaped structure composed of alternating wedges made of two kinds of natural materials is proposed to achieve this goal. The simulation and experimental results show good agreement, thereby confirming the feasibility of our scheme.

  8. Interpreting Soap Operas and Creating Community: Inside a Computer-Mediated Fan Culture

    E-Print Network [OSTI]

    Baym, Nancy K.

    1993-11-01T23:59:59.000Z

    Research, Vol. 30(2/3), 143-176. Publisher’s official version: Open Access version: Computer-Mediated Fans -- 22 Performance If genre is the "what" of recurrent forms of speech, performance is the "how" (Hymes, 1975, pg. 351). In this section I turn... such community. Rec.arts.tv.soaps ("r.a.t.s.") is a highly successful computer-mediated discussion group ("newsgroup") which discusses American daytime television soap operas. R.a.t.s. is distributed in the form of electronic messages through the Usenet...

  9. A study in animation and visualization: consolidation of the Mississippi Fan

    E-Print Network [OSTI]

    Parmley, Kelly Lynn

    1992-01-01T23:59:59.000Z

    of MASTER OF SCIENCE December 1992 Major Subject: Computer Science A STUDY IN ANIMATION AND VISUALIZATION: CONSOLIDATION OF THE MISSISSIPPI FAN A Thesis by KELLY LYNN PARMLEY Approved as to style and content by: Glen N. Williams (Chair of Committee... and effort expended, Malia Martin, Derek Spears, Debbie Carlson and Neal McDonald for help with portions of the research, and Dr. Childs, Susan Mengel, and Clay Williams for help in generating the LaTEX document. Thanks also go to Willis Marti, Donna...

  10. Field study of exhaust fans for mitigating indoor air quality problems: Final report

    SciTech Connect (OSTI)

    Grimsrud, D.T.; Szydlowski, R.F.; Turk, B.H.

    1986-09-01T23:59:59.000Z

    Residential ventilation in the United States housing stock is provided primarily by infiltration, the natural leakage of outdoor air into a building through cracks and holes in the building shell. Since ventilation is the dominant mechanism for control of indoor pollutant concentrations, low infiltration rates caused fluctuation in weather conditions may lead to high indoor pollutant concentrations. Supplemental mechanical ventilation can be used to eliminate these periods of low infiltration. This study examined effects of small continuously-operating exhaust fan on pollutant concentrations and energy use in residences.

  11. Sniffing by a silkworm moth: Wing fanning enhances air penetration through and pheromone interception by antennae

    E-Print Network [OSTI]

    Loudon, Catherine; Koehl, M. A. R.

    2000-10-01T23:59:59.000Z

    was measured on video recordings (described below); the mean distance between the wire and the antennal bases was 4.7 mm (range 2.8–6.1 mm, N=15), and the mean distance from the wire to the closest antennal tip was 3.1 mm (range 0.8–5.1 mm, N=15) during... motion a A Wing length B Stroke angle C Angle of attack 1 cm 2980 Video recordings of wing fanning A Panasonic Palmcorder (model PV-562) was used to make video recordings (SVHS) of the wing motions of the 15 male moths described above under...

  12. Turning on the Fan and Turning off the A/C | Department of Energy

    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 33Frequently AskedEnergyIssuesEnergyTransportation WorkDecember 28, 2004 PartTurning on the Fan

  13. Improving Best Air Conditioner Efficiency by 20-30% through a High Efficiency Fan and Diffuser Stage Coupled with an Evaporative Condenser Pre-Cooler

    SciTech Connect (OSTI)

    Parker, Danny S; Sherwin, John R; Raustad, Richard

    2014-04-10T23:59:59.000Z

    The Florida Solar Energy Center (FSEC) conducted a research project to improve the best residential air conditioner condenser technology currently available on the market by retrofitting a commercially-available unit with both a high efficiency fan system and an evaporative pre-cooler. The objective was to integrate these two concepts to achieve an ultra-efficient residential air conditioner design. The project produced a working prototype that was 30% more efficient compared to the best currently-available technologies; the peak the energy efficiency ratio (EER) was improved by 41%. Efficiency at the Air-Conditioning and Refrigeration Institute (ARI) standard B-condition which is used to estimate seasonal energy efficiency ratio (SEER), was raised from a nominal 21 Btu/Wh to 32 Btu/Wh.

  14. Experimental study of blade thickness effects on the overall and local performances of a Controlled Vortex Designed axial-flow fan

    E-Print Network [OSTI]

    Boyer, Edmond

    the dissipation of energy in the von K´arm´an street behind the blades so that the per- formances of the fan Vortex Designed axial-flow fan C. Sarrafa , H. Nouria , F. Raveleta, , F. Bakira aArts et Metiers Paris

  15. Tracer airflow measurement system (TRAMS)

    DOE Patents [OSTI]

    Wang, Duo (Albany, CA)

    2007-04-24T23:59:59.000Z

    A method and apparatus for measuring fluid flow in a duct is disclosed. The invention uses a novel high velocity tracer injector system, an optional insertable folding mixing fan for homogenizing the tracer within the duct bulk fluid flow, and a perforated hose sampling system. A preferred embodiment uses CO.sub.2 as a tracer gas for measuring air flow in commercial and/or residential ducts. In extant commercial buildings, ducts not readily accessible by hanging ceilings may be drilled with readily plugged small diameter holes to allow for injection, optional mixing where desired using a novel insertable foldable mixing fan, and sampling hose.

  16. Revealing Occupancy Diversity Factors in Buildings Using Sensor Data

    E-Print Network [OSTI]

    Bouffaron, Pierrick

    2014-01-01T23:59:59.000Z

    for building VAV air-conditioning systems. Energy andRefrigerating and Air-Conditioning Engineers, Inc; 2004.Ventilation, and Air Conditioning) systems represent the

  17. On Flame-Wall Thermal-Coupling in Micro Combustors Yong Fan, Yuji Suzuki, and Nobuhide Kasagi

    E-Print Network [OSTI]

    Kasagi, Nobuhide

    On Flame-Wall Thermal-Coupling in Micro Combustors Yong Fan, Yuji Suzuki, and Nobuhide Kasagi Department of Mechanical Engineering, The University of Tokyo, Japan Keywords: Micro combustor, Premixed of premixed CH4/Air flame propagation and quenching in three quartz combustors with chamber depth of 0.7 mm, 1

  18. Study of the Effects of Ambient Conditions Upon the Performance of Fan Powered, Infrared Natural Gas Burners

    SciTech Connect (OSTI)

    Clark Atlanta University

    2002-12-02T23:59:59.000Z

    The objective of this investigation was to characterize the operation of a fan-powered, infrared burner (IR burner) at various gas compositions and ambient conditions, develop numerical model to simulate the burner performances, and provide design guidelines for appliances containing PIR burners for satisfactory performance.

  19. Gas-surface scattering with multiple collisions in the physisorption potential well Guoqing Fan and J. R. Manson

    E-Print Network [OSTI]

    Manson, Joseph R.

    Gas-surface scattering with multiple collisions in the physisorption potential well Guoqing Fan The problem of gas-surface collisions is developed in terms of a theoretical formalism that allows calcula gas distributions are considered, a monoenergetic incident beam and an equilibrium gas appropriate

  20. Inferring Air Pollution by Sniffing Social Media Shike Mei, Han Li, Jing Fan, Xiaojin Zhu and Charles R. Dyer

    E-Print Network [OSTI]

    Zhu, Xiaojin "Jerry"

    Inferring Air Pollution by Sniffing Social Media Shike Mei, Han Li, Jing Fan, Xiaojin Zhu issue of air pollution in China and elsewhere in the world is to monitor it. While more physical prediction performance of our approach. I. INTRODUCTION Air pollution is a significant issue in China

  1. Stimulated Emission from a Single Excited Atom in a Waveguide Eden Rephaeli1,* and Shanhui Fan2,

    E-Print Network [OSTI]

    Fan, Shanhui

    Stimulated Emission from a Single Excited Atom in a Waveguide Eden Rephaeli1,* and Shanhui Fan2, 1; published 3 April 2012) We study stimulated emission from an excited two-level atom coupled to a waveguide by the atom, plays a very important role in stimulated emission. Additionally, the temporal duration

  2. Theory of Second-Harmonic Generation in Colloidal Crystals J. P. Huang,* Y. C. Jian, and C. Z. Fan

    E-Print Network [OSTI]

    Huang, Ji-Ping

    Theory of Second-Harmonic Generation in Colloidal Crystals J. P. Huang,* Y. C. Jian, and C. Z. Fan-Kornfeld formulation, we study the effective susceptibility of second-harmonic generation (SHG) in colloidal crystals of second-harmonic generation (SHG); that is, an input (pump) wave can generate another wave with twice

  3. Toward Resilient Security in Wireless Sensor Networks # Hao Yang # , Fan Ye + , Yuan Yuan # , Songwu Lu # , William Arbaugh #

    E-Print Network [OSTI]

    Lu, Songwu

    networks, location­based security, resiliency, node compromise, en­route filtering, key distributionToward Resilient Security in Wireless Sensor Networks # Hao Yang # , Fan Ye + , Yuan Yuan@us.ibm.com {yuanyuan,waa}@cs.umd.edu ABSTRACT Node compromise poses severe security threats in wireless sensor networks

  4. VELOCITY MEASUREMENTS FOR A SOLAR ACTIVE REGION FAN LOOP FROM HINODE/EIS OBSERVATIONS

    SciTech Connect (OSTI)

    Young, P. R. [College of Science, George Mason University, 4400 University Drive, Fairfax, VA 22030 (United States); O'Dwyer, B.; Mason, H. E. [Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom)

    2012-01-01T23:59:59.000Z

    The velocity pattern of a fan loop structure within a solar active region over the temperature range 0.15-1.5 MK is derived using data from the EUV Imaging Spectrometer (EIS) on board the Hinode satellite. The loop is aligned toward the observer's line of sight and shows downflows (redshifts) of around 15 km s{sup -1} up to a temperature of 0.8 MK, but for temperatures of 1.0 MK and above the measured velocity shifts are consistent with no net flow. This velocity result applies over a projected spatial distance of 9 Mm and demonstrates that the cooler, redshifted plasma is physically disconnected from the hotter, stationary plasma. A scenario in which the fan loops consist of at least two groups of 'strands'-one cooler and downflowing, the other hotter and stationary-is suggested. The cooler strands may represent a later evolutionary stage of the hotter strands. A density diagnostic of Mg VII was used to show that the electron density at around 0.8 MK falls from 3.2 Multiplication-Sign 10{sup 9} cm{sup -3} at the loop base, to 5.0 Multiplication-Sign 10{sup 8} cm{sup -3} at a projected height of 15 Mm. A filling factor of 0.2 is found at temperatures close to the formation temperature of Mg VII (0.8 MK), confirming that the cooler, downflowing plasma occupies only a fraction of the apparent loop volume. The fan loop is rooted within a so-called outflow region that displays low intensity and blueshifts of up to 25 km s{sup -1} in Fe XII {lambda}195.12 (formed at 1.5 MK), in contrast to the loop's redshifts of 15 km s{sup -1} at 0.8 MK. A new technique for obtaining an absolute wavelength calibration for the EIS instrument is presented and an instrumental effect, possibly related to a distorted point-spread function, that affects velocity measurements is identified.

  5. An Evaluation of Improper Refrigerant Charge on the Performance of a Split System Air Conditioner with Capillary Tube Expansion

    E-Print Network [OSTI]

    Farzad, M.; O'Neal, D. L.

    1988-01-01T23:59:59.000Z

    of the coil was 20.94 ft2 with refrigerant tube sizes of 3/8". The outdoor fan was located on the top of the outdoor coil. The fan specifications are given in Table 3.1. Figure 3.3 - Detail of Outdoor Test Section 25 Table 3.1 - Fan Specification...ESL-TR-88/07-01 AN EVALUATION OF IMPROPER REFRIGERANT CHARGE ON THE PERFORMANCE OF A SPLIT SYSTEM AIR CONDITIONER WITH CAPILLARY TUBE EXPANSION FINAL REPORT Submitted by Mohsen Farzad Dennis L. O'Neal Prepared For ENERGY SYSTEMS LABORATORY RESEARCH...

  6. An optical fan for light beams for high-precision optical measurements and optical switching

    E-Print Network [OSTI]

    Zhi-Yuan Zhou; Yan Li; Dong-Sheng Ding; Yun-Kun Jiang; Wei Zhang; Shuai Shi; Bao-Sen Shi; Guang-Can Guo

    2014-05-08T23:59:59.000Z

    The polarization and orbital angular momentum properties of light are of great importance in optical science and technology in the fields of high precision optical measurements and high capacity and high speed optical communications. Here we show, a totally new method, based on a combination of these two properties and using the thermal dispersion and electro-optical effect of birefringent crystals, the construction of a simple and robust scheme to rotate a light beam like a fan. Using a computer-based digital image processing technique, we determine the temperature and the thermal dispersion difference of the crystal with high resolution. We also use the rotation phenomenon to realize thermo-optic and electro-optic switches. The basic operating principles for measurement and switching processes are presented in detail. The methods developed here will have wide practical applicability in various fields, including remote sensing, materials science and optical communication networks.

  7. Improving Control of a Dual-Duct Single-Fan Variable Air Volume Systems

    E-Print Network [OSTI]

    Wei, G.; Martinez, J.; Minihan, T.; Brundidge, T.; Claridge, D. E.; Turner, W. D.

    2003-01-01T23:59:59.000Z

    cold and hot air duct static pressure set points is presented. The paper also explores the interactions between the cold and hot deck temperatures and duct static pressures, and discusses the impact of non-ideal deck temperature settings on duct static...

  8. Palaeoenvironmental reconstruction of a middle Miocene alluvial fan to cyclic shallow lacustrine depositional system

    E-Print Network [OSTI]

    Utrecht, Universiteit

    with tabular and/or laminated carbonate beds; and (4) mudflat­shallow lake facies showing a remarkable cyclical. The cyclic mudflat­shallow lake succession, as exposed in the Orera composite section (OCS), is dominantly on the lacustrine mudflat and on climate. The dolomite intervals accumulated during lake-level highstands with Mg

  9. Use of Statistical Approach to Design an Optimal Duct System for On-demand Industrial Exhaust Ventilation 

    E-Print Network [OSTI]

    Litomisky, A.

    2010-01-01T23:59:59.000Z

    This paper elaborates on how to use statistics to calculate optimal parameters (including duct diameters) of energy-efficient industrial ventilation systems. Based on the fan-law, on-demand ventilation can save up to 80% ...

  10. Use of Statistical Approach to Design an Optimal Duct System for On-demand Industrial Exhaust Ventilation

    E-Print Network [OSTI]

    Litomisky, A.

    2010-01-01T23:59:59.000Z

    This paper elaborates on how to use statistics to calculate optimal parameters (including duct diameters) of energy-efficient industrial ventilation systems. Based on the fan-law, on-demand ventilation can save up to 80% of electricity compared...

  11. Modeling the Air Flow in the 3410 Building Filtered Exhaust Stack System

    SciTech Connect (OSTI)

    Recknagle, Kurtis P.; Barnett, J. M.; Suffield, Sarah R.

    2013-01-23T23:59:59.000Z

    Additional ventilation capacity has been designed for the 3410 Building filtered exhaust stack system. The updated system will increase the number of fans from two to three and will include ductwork to incorporate the new fan into the existing stack. Stack operations will involve running various two-fan combinations at any given time. The air monitoring system of the existing two-fan stack was previously found to be in compliance with the ANSI/HPS N13.1-1999 standard, however it is not known if the modified (three-fan) system will comply. Subsequently, a full-scale three-dimensional (3-D) computational fluid dynamics (CFD) model of the modified stack system has been created to examine the sampling location for compliance with the standard. The CFD modeling results show good agreement with testing data collected from the existing 3410 Building stack and suggest that velocity uniformity and flow angles will remain well within acceptance criteria when the third fan and associated ductwork is installed. This includes two-fan flow rates up to 31,840 cfm for any of the two-fan combinations. For simulation cases in which tracer gas and particles are introduced in the main duct, the model predicts that both particle and tracer gas coefficients of variance (COVs) may be larger than the acceptable 20 percent criterion of the ANSI/HPS N13.1-1999 standard for each of the two-fan, 31,840 cfm combinations. Simulations in which the tracers are introduced near the fans result in improved, though marginally acceptable, COV values for the tracers. Due to the remaining uncertainty that the stack will qualify with the addition of the third fan and high flow rates, a stationary air blender from Blender Products, Inc. is considered for inclusion in the stack system. A model of the air blender has been developed and incorporated into the CFD model. Simulation results from the CFD model that includes the air blender show striking improvements in tracer gas mixing and tracer particle dispersion. The results of these simulations suggest the air blender should be included in the stack system to ensure qualification of the stack.

  12. air espectrometria gama: Topics by E-print Network

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

    on system knowledge, qualitative states and object-oriented statistical process control (SPC) models for typical pressure-independent variable air volume (VAV) air... Qin, J.;...

  13. Gravid Mosquito Trap P462 -Trap The ChemTica GMT operates on 4 size D cell batteries. A photo-activated switch turns on the fan

    E-Print Network [OSTI]

    Ishida, Yuko

    batteries. A photo-activated switch turns on the fan at dusk. Manual shutoff is required at dawn to prevent at dawn to prevent loss of trapped mosquitoes. Power is supplied by four D cell batteries. The upper case

  14. Final Report Independent Verification Survey of the High Flux Beam Reactor, Building 802 Fan House Brookhaven National Laboratory Upton, New York

    SciTech Connect (OSTI)

    Harpeneau, Evan M. [Oak Ridge Institute for Science and Education, Oak Ridge, TN (United States). Independent Environmental Assessment and Verification Program

    2011-06-24T23:59:59.000Z

    On May 9, 2011, ORISE conducted verification survey activities including scans, sampling, and the collection of smears of the remaining soils and off-gas pipe associated with the 802 Fan House within the HFBR (High Flux Beam Reactor) Complex at BNL. ORISE is of the opinion, based on independent scan and sample results obtained during verification activities at the HFBR 802 Fan House, that the FSS (final status survey) unit meets the applicable site cleanup objectives established for as left radiological conditions.

  15. IN TELLIGENT CONTROLLING SYSTEM OF AQUICULTURE ENVIRONMENT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    oxygen and fan and opening of windows and electromagnetism valve, The system hardware is composed of monitoring computer and PROFIBUS-DP field controlling units, which detects and controls the ecologicalIN TELLIGENT CONTROLLING SYSTEM OF AQUICULTURE ENVIRONMENT Deshen Zhao ,*1 1 Department of Electric

  16. Characterization of dynamic change of Fan-delta reservoir properties in water-drive development

    SciTech Connect (OSTI)

    Wu Shenghe; Xiong Qihua; Liu Yuhong [Univ. of Petroleum Changping, Beijing (China)

    1997-08-01T23:59:59.000Z

    Fan-delta reservoir in Huzhuangji oil field of east China, is a typical highly heterogeneous reservoir. The oil field has been developed by water-drive for 10 years, but the oil recovery is less than 12%, and water cut is over 90%, resulting from high heterogeneity and serious dynamic change of reservoir properties. This paper aims at the study of dynamic change of reservoir properties in water-drive development. Through quantitative imaging analysis and mercury injection analysis of cores from inspection wells, the dynamic change of reservoir pore structure in water-drive development was studied. The results show that the {open_quotes}large pore channels{close_quotes} develop in distributary channel sandstone and become larger in water-drive development, resulting in more serious pore heterogeneity. Through reservoir sensitivity experiments, the rock-fluid reaction in water-drive development is studied. The results show the permeability of some distal bar sandstone and deserted channel sandstone becomes lower due to swelling of I/S clay minerals in pore throats. OD the other hand, the permeability of distributary channel and mouth bar sandstone become larger because the authigenic Koalinites in pore throats are flushed away with the increase of flow rate of injection water. Well-logging analysis of flooded reservoirs are used to study the dynamic change of reservoir properties in various flow units. The distribution of remaining oil is closely related to the types and distribution of flow units.

  17. Stochastic Systems Group MR Bias Correction and Reflectance

    E-Print Network [OSTI]

    Willsky, Alan S.

    . Fisher, M. Cetin, S. Haker, A. Willsky #12;Stochastic Systems Group Outline 1. Introduction 2. MR) · Both maps will have edges #12;Stochastic Systems Group Outline 1. Introduction 2. MR measurement modelStochastic Systems Group MR Bias Correction and Reflectance and Illumination Separation Ayres Fan

  18. Issuance 2014-11-21:Energy Efficiency Program for Consumer Products: Energy Conservation Standards for Ceiling Fans: Availability of the Preliminary Technical Support Document, Notice of Comment Period Extension

    Broader source: Energy.gov [DOE]

    Energy Efficiency Program for Consumer Products: Energy Conservation Standards for Ceiling Fans: Availability of the Preliminary Technical Support Document, Notice of Comment Period Extension

  19. Study of the effects of ambient conditions upon the performance of fan powered, infrared, natural gas burners. Quarterly technical progress report, July 1--September 30, 1995

    SciTech Connect (OSTI)

    Bai, T.; Yeboah, Y.D.; Sampath, R.

    1995-10-01T23:59:59.000Z

    The objective of this investigation is to characterize the operation of fan powered infrared burner (PIR) at various gas compositions and ambient conditions and develop design guidelines for appliances in containing PIR burners for satisfactory performance. During this period, experimental setup with optical and electronic instrumentation that is necessary for measuring the radiant heat output and the emission gas output of the burner has been established. The radiation measurement instrument, an FTIR, has been purchased and installed in the porous burner experimental system. The radiation measurement capability of the FTIR was tested and found to be satisfactory. A standard blackbody source, made by Graseby Infrared, was employed to calibrate the FTIR. A collection duct for emission gas measurement was fabricated and connected to the existing Horiba gas analyzer. Test runs are being conducted for flue gas analysis. A number of published research papers on modeling of porous burners were reviewed. The physical mechanism and theoretical analysis of the combustion process of the PIR burner was formulated. The numerical modeling, and implementation of a PIR burner code at CAU`s computing facility is in progress.

  20. Uranium-series comminution ages of continental sediments: Case study of a Pleistocene alluvial fan

    SciTech Connect (OSTI)

    Lee, Victoria E.; DePaolo, Donald J.; Christensen, John N.

    2010-04-30T23:59:59.000Z

    Obtaining quantitative information about the timescales associated with sediment transport, storage, and deposition in continental settings is important but challenging. The uranium-series comminution age method potentially provides a universal approach for direct dating of Quaternary detrital sediments, and can also provide estimates of the sediment transport and storage timescales. (The word"comminution" means"to reduce to powder," reflecting the start of the comminution age clock as reduction of lithic parent material below a critical grain size threshold of ~;;50 mu m.) To test the comminution age method as a means to date continental sediments, we applied the method to drill-core samples of the glacially-derived Kings River Fan alluvial deposits in central California. Sediments from the 45 m core have independently-estimated depositional ages of up to ~;;800 ka, based on paleomagnetism and correlations to nearby dated sediments. We characterized sequentially-leached core samples (both bulk sediment and grain size separates) for U, Nd, and Sr isotopes, grain size, surface texture, and mineralogy. In accordance with the comminution age model, where 234U is partially lost from small sediment grains due to alpha recoil, we found that (234U/238U) activity ratios generally decrease with age, depth, and specific surface area, with depletions of up to 9percent relative to radioactive equilibrium. The resulting calculated comminution ages are reasonable, although they do not exactly match age estimates from previous studies and also depend on assumptions about 234U loss rates. The results indicate that the method may be a significant addition to the sparse set of available tools for dating detrital continental sediments, following further refinement. Improving the accuracy of the method requires more advanced models or measurements for both the recoil loss factor fa and weathering effects. We discuss several independent methods for obtaining fa on individual samples that may be useful for future studies.

  1. Room Temperature Control During Season Switchover with Single Duct Variable Air Volume System Without Reheat 

    E-Print Network [OSTI]

    Liu, C.; Deng, S.; Claridge, D. E.; Turner, W. D.; Bruner, H.

    2003-01-01T23:59:59.000Z

    The Langford “A” building houses the College of Architecture on TAMU campus. There are ten singleduct variable air volume (VAV) air-handling units (AHUs) without reheat serving the building. The local pneumatic thermostats modulate the dampers...

  2. Flexibility of Commercial Building HVAC Fan as Ancillary Service for Smart Grid

    E-Print Network [OSTI]

    Maasoumy, Mehdi

    2013-01-01T23:59:59.000Z

    optimal control design for HVAC systems,” in Dynamic Systemminimization of building hvac systems using model pre-algorithm design for hvac systems in energy efficient

  3. Utility Cost Analysis

    E-Print Network [OSTI]

    Horn, S.

    1984-01-01T23:59:59.000Z

    W Computere 6 Computer HVAC Computers Liebert Unite CRT's Subtotal WAC System VAV AHU' s TABLE 3: OPERATING kW BY SEASON Computers 6 Computer WAC Comput err Liebert Unitr CRT'B Sub total HVAC System VAV AHU's AHU1# Pumps Chillerr Subtotal...

  4. Measuring temperature - dependent propagating disturbances in coronal fan loops using multiple SDO/AIA channels and surfing transform technique

    E-Print Network [OSTI]

    Uritsky, Vadim M; Viall, Nicholeen M; Ofman, Leon

    2013-01-01T23:59:59.000Z

    A set of co-aligned high resolution images from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO) is used to investigate propagating disturbances (PDs) in warm fan loops at the periphery of a non-flaring active region NOAA AR 11082. To measure PD speeds at multiple coronal temperatures, a new data analysis methodology is proposed enabling quantitative description of subvisual coronal motions with low signal-to-noise ratios of the order of 0.1 %. The technique operates with a set of one-dimensional "surfing" signals extracted from position-time plots of several AIA channels through a modified version of Radon transform. The signals are used to evaluate a two-dimensional power spectral density distribution in the frequency - velocity space which exhibits a resonance in the presence of quasi-periodic PDs. By applying this analysis to the same fan loop structures observed in several AIA channels, we found that the traveling velocity of PDs increases with the temperature of the c...

  5. Review of Literature on Terminal Box Control, Occupancy Sensing Technology and Multi-zone Demand Control Ventilation (DCV)

    SciTech Connect (OSTI)

    Liu, Guopeng; Dasu, Aravind R.; Zhang, Jian

    2012-03-01T23:59:59.000Z

    This report presents an overall review of the standard requirement, the terminal box control, occupancy sensing technology and DCV. There is system-specific guidance for single-zone systems, but DCV application guidance for multi-zone variable air volume (VAV) systems is not available. No real-world implementation case studies have been found using the CO2-based DCV. The review results also show that the constant minimum air flow set point causes excessive fan power consumption and potential simultaneous heating and cooling. Occupancy-based control (OBC) is needed for the terminal box in order to achieve deep energy savings. Key to OBC is a technology for sensing the actual occupancy of the zone served in real time. Several technologies show promise, but none currently fully meets the need with adequate accuracy and sufficiently low cost.

  6. Cool and Save: Cooling Aware Dynamic Workload Scheduling in Multi-socket CPU Systems

    E-Print Network [OSTI]

    Simunic, Tajana

    Cool and Save: Cooling Aware Dynamic Workload Scheduling in Multi-socket CPU Systems Raid Ayoub, dissipating the high temper- ature requires a large and energy hungry cooling system which increases the cost and fan control in multi-socket systems have been designed sep- arately leading to less efficient

  7. GentleCool: Cooling Aware Proactive Workload Scheduling in Multi-Machine Systems

    E-Print Network [OSTI]

    Simunic, Tajana

    GentleCool: Cooling Aware Proactive Workload Scheduling in Multi-Machine Systems Raid Ayoub characteristics of the workload running on the system. We propose a scheduling framework called GentleCool, a proactive multi-tier approach for significantly lowering the fan cooling costs in highly utilized systems

  8. CHANGES IN SANDSTONE DISTRIBUTIONS BETWEEN THE UPPER, MIDDLE, AND LOWER FAN IN THE ARKANSAS JACKFORK GROUP

    E-Print Network [OSTI]

    Mack, Clayton P.

    2010-07-14T23:59:59.000Z

    , or systems, but the overall complex has two systems separated by a massive marine shale bed, 33.5 m, that contains virtually no sand....

  9. Flexibility of Commercial Building HVAC Fan as Ancillary Service for Smart Grid

    E-Print Network [OSTI]

    Maasoumy, Mehdi

    2013-01-01T23:59:59.000Z

    of building automation and control systems,” Design Test ofSystems Control. [Online]. Available: http://www.nerc.com [18] Apogee Building Automation [

  10. Phase-locked OH-PLIF of Oscillating Flame in Micro Channels FAN, Yong1*, SUZUKI, Yuji1, KASAGI, Nobuhide1

    E-Print Network [OSTI]

    Kasagi, Nobuhide

    excitation lines [6]. Experimental setup of phase-locked OH-PLIF imaging has been developedPhase-locked OH-PLIF of Oscillating Flame in Micro Channels FAN, Yong1*, SUZUKI, Yuji1, KASAGI in the oscillation process are investigated with phase-locked OH-PLIF imaging technique. 2. Flame velocity Figures. 1

  11. Cooling Power Density of SiGe/Si Superlattice Micro Refrigerators Gehong Zeng, Xiaofeng Fan, Chris LaBounty, Edward Croke2

    E-Print Network [OSTI]

    Bowers, John

    Cooling Power Density of SiGe/Si Superlattice Micro Refrigerators Gehong Zeng, Xiaofeng Fan, Chris Experiments were carried out to determine the cooling power density of SiGe/Si superlattice microcoolers by integrating thin film metal resistor heaters on the cooling surface. By evaluating the maximum cooling

  12. [1] E. Yablonovitch, Phys. Rev. Lett. 1987, 58, 2059. [2] V. I. Kopp, B. Fan, H. K. M. Vithana, A. Z. Genack, Opt. Lett. 1998,

    E-Print Network [OSTI]

    Chen, Shaw H.

    . Yablonovitch, T. J. Gmitter, Phys. Rev. Lett. 1991, 67, 3380. [21] O. Painter, P. K. Lee, A. Scherer, A. Yariv± [1] E. Yablonovitch, Phys. Rev. Lett. 1987, 58, 2059. [2] V. I. Kopp, B. Fan, H. K. M. Vithana, A. Z. Genack, Opt. Lett. 1998, 23, 1707. [3] A. Munoz, P. Palffy-Muhoray, B. Taheri, Opt. Lett. 2001

  13. Intermolecular C-H Bond Activation Promoted by a Titanium Alkylidyne Brad C. Bailey, Hongjun Fan, Erich W. Baum, John C. Huffman, Mu-Hyun Baik,* and

    E-Print Network [OSTI]

    Baik, Mu-Hyun

    Intermolecular C-H Bond Activation Promoted by a Titanium Alkylidyne Brad C. Bailey, Hongjun Fan to perform intermolecular activation of inert C-H bonds.3-7 We now report that transient titanium alkylidynes an energy profile for the C-H bond activation reaction. Recently, our group reported the synthesis

  14. Tunable Fresnel lens using nanoscale polymer-dispersed liquid crystals Hongwen Ren, Yun-Hsing Fan, and Shin-Tson Wua)

    E-Print Network [OSTI]

    Wu, Shin-Tson

    Tunable Fresnel lens using nanoscale polymer-dispersed liquid crystals Hongwen Ren, Yun-Hsing Fan May 2003; accepted 27 June 2003 An electrically tunable Fresnel zone plate lens is demonstrated using by voltage. The major advantages of such a Fresnel lens are simple fabrication, large aperture size

  15. High Cooling Power Density of SiGe/Si Superlattice Microcoolers Gehong Zeng, Xiaofeng Fan, Chris LaBounty, John E. Bowers, Edward Croke1

    E-Print Network [OSTI]

    High Cooling Power Density of SiGe/Si Superlattice Microcoolers Gehong Zeng, Xiaofeng Fan, Chris La, University of California, Santa Cruz, CA 95064 ABSTRACT Fabrication and characterization of SiGe for their potential monolithic integration with Si microelectronics. SiGe is a good thermoelectric material especially

  16. Autonomous grain combine control system

    DOE Patents [OSTI]

    Hoskinson, Reed L.; Kenney, Kevin L.; Lucas, James R.; Prickel, Marvin A.

    2013-06-25T23:59:59.000Z

    A system for controlling a grain combine having a rotor/cylinder, a sieve, a fan, a concave, a feeder, a header, an engine, and a control system. The feeder of the grain combine is engaged and the header is lowered. A separator loss target, engine load target, and a sieve loss target are selected. Grain is harvested with the lowered header passing the grain through the engaged feeder. Separator loss, sieve loss, engine load and ground speed of the grain combine are continuously monitored during the harvesting. If the monitored separator loss exceeds the selected separator loss target, the speed of the rotor/cylinder, the concave setting, the engine load target, or a combination thereof is adjusted. If the monitored sieve loss exceeds the selected sieve loss target, the speed of the fan, the size of the sieve openings, or the engine load target is adjusted.

  17. CCLEP Retrofit and Innovative Controls to Achieve 56% Energy Savings for a Luxury Shopping Mall 

    E-Print Network [OSTI]

    Wu, L.; Pang, X.; Liu, M.; Wang, J.; Lewis, T. G.

    2007-01-01T23:59:59.000Z

    single fan dual-duct VAV AHUs, 123 dual-duct pneumatic controller pressure independent terminal boxes, and a central heating and cooling plant. Major retrofit efforts include upgrading from pneumatic to DDC controls for all AHUs, installing main hot deck...

  18. Image Fusion for MR Bias Stochastic Systems Group

    E-Print Network [OSTI]

    Willsky, Alan S.

    We can target T1 and T2 through appropriate selection of TE and TR. #12;Image Reconstruction The MRImage Fusion for MR Bias Correction Ayres Fan Stochastic Systems Group Joint work with W. Wells, J. Fisher, M. Cetin, S. Haker, A. Willsky, B. Mulkern #12;Magnetic Resonance The magnetic resonance (MR

  19. Comparison of Demand Response Performance with an EnergyPlus Model in a Low Energy Campus Building

    SciTech Connect (OSTI)

    Dudley, Junqiao Han; Black, Doug; Apte, Mike; Piette, Mary Ann; Berkeley, Pam

    2010-05-14T23:59:59.000Z

    We have studied a low energy building on a campus of the University of California. It has efficient heating, ventilation, and air conditioning (HVAC) systems, consisting of a dual-fan/dual-duct variable air volume (VAV) system. As a major building on the campus, it was included in two demand response (DR) events in the summers of 2008 and 2009. With chilled water supplied by thermal energy storage in the central plant, cooling fans played a critical role during DR events. In this paper, an EnergyPlus model of the building was developed and calibrated. We compared both whole-building and HVAC fan energy consumption with model predictions to understand why demand savings in 2009 were much lower than in 2008. We also used model simulations of the study building to assess pre-cooling, a strategy that has been shown to improve demand saving and thermal comfort in many types of building. This study indicates a properly calibrated EnergyPlus model can reasonably predict demand savings from DR events and can be useful for designing or optimizing DR strategies.

  20. SEEDEEP: A System for Exploring and Querying Scientific Deep Web Data Sources

    E-Print Network [OSTI]

    Agrawal, Gagan

    SEEDEEP: A System for Exploring and Querying Scientific Deep Web Data Sources Fan Wang Gagan that are hidden behind query forms, thus forming what is re- ferred to as the deep web. In this paper, we propose SEEDEEP, a System for Exploring and quErying scientific DEEP web data sources. SEEDEEP is able

  1. Revision Date: 8/29/11 ETME 425 -Building Systems Fall 2011

    E-Print Network [OSTI]

    Dyer, Bill

    system integration. Incorporate the elements (pumps, fans, compressors, heat exchangers, heaters. HVAC Equipment 10. Sanitary Venting and Draining 3. Heat Loss and Heat Gain 7. Building Water Supply in modern buildings - including system selection, heating and cooling load calculations, component selection

  2. EUV SPECTRAL LINE FORMATION AND THE TEMPERATURE STRUCTURE OF ACTIVE REGION FAN LOOPS: OBSERVATIONS WITH HINODE/EIS AND SDO/AIA

    SciTech Connect (OSTI)

    Brooks, David H.; Young, Peter R. [College of Science, George Mason University, 4400 University Drive, Fairfax, VA 22020 (United States); Warren, Harry P., E-mail: dhbrooks@ssd5.nrl.navy.mil [Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States)

    2011-04-01T23:59:59.000Z

    With the aim of studying active region fan loops using observations from the Hinode EUV Imaging Spectrometer (EIS) and Solar Dynamics Observatory Atmospheric Imaging Assembly (AIA), we investigate a number of inconsistencies in modeling the absolute intensities of Fe VIII and Si VII lines, and address why spectroheliograms formed from these lines look very similar despite the fact that ionization equilibrium calculations suggest that they have significantly different formation temperatures: log(T{sub e} /K) = 5.6 and 5.8, respectively. It is important to resolve these issues because confidence has been undermined in their use for differential emission measure (DEM) analysis, and Fe VIII is the main contributor to the AIA 131 A channel at low temperatures. Furthermore, the strong Fe VIII 185.213 A and Si VII 275.368 A lines are the best EIS lines to use for velocity studies in the transition region, and for assigning the correct temperature to velocity measurements in the fans. We find that the Fe VIII 185.213 A line is particularly sensitive to the slope of the DEM, leading to disproportionate changes in its effective formation temperature. If the DEM has a steep gradient in the log(T{sub e} /K) = 5.6-5.8 temperature range, or is strongly peaked, Fe VIII 185.213 A and Si VII 275.368 A will be formed at the same temperature. We show that this effect explains the similarity of these images in the fans. Furthermore, we show that the most recent ionization balance compilations resolve the discrepancies in absolute intensities. With these difficulties overcome, we combine EIS and AIA data to determine the temperature structure of a number of fan loops and find that they have peak temperatures of 0.8-1.2 MK. The EIS data indicate that the temperature distribution has a finite (but narrow) width < log ({sigma}{sub Te}/K) = 5.5 which, in one detailed case, is found to broaden substantially toward the loop base. AIA and EIS yield similar results on the temperature, emission measure magnitude, and thermal distribution in the fans, though sometimes the AIA data suggest a relatively larger thermal width. The result is that both the Fe VIII 185.213 A and Si VII 275.368 A lines are formed at log(T{sub e} /K){approx} 5.9 in the fans, and the AIA 131 A response also shifts to this temperature.

  3. Polysulfide Flow Batteries Enabled by Percolating Nanoscale Conductor Networks Frank Y. Fan1

    E-Print Network [OSTI]

    . Lowering the cost of stored energy below ~$100/kWh at system level remains a challenge, however2,3 . Many of higher energy density and lower system cost. Lithium polysulfide half-flow cells operating in both to decouple stored energy (the tanks) from power (the stack), inherent scalability, and potentially low cost1

  4. Coupled double-layer Fano resonance photonic crystal filters with lattice-displacement Yichen Shuai, Deyin Zhao, Arvinder Singh Chadha, Jung-Hun Seo, Hongjun Yang, Shanhui Fan, Zhenqiang Ma

    E-Print Network [OSTI]

    Fan, Shanhui

    , Deyin Zhao, Arvinder Singh Chadha, Jung-Hun Seo, Hongjun Yang, Shanhui Fan, Zhenqiang Ma , and Weidong with lattice-displacement Yichen Shuai,1 Deyin Zhao,1 Arvinder Singh Chadha,1 Jung-Hun Seo,2 Hongjun Yang,1

  5. Optimization of VAV AHU Terminal Box Minimum Airflow

    E-Print Network [OSTI]

    Wang, Wei

    2011-10-21T23:59:59.000Z

    Determining the optimal terminal box airflow is a complex process which is influenced by various factors, such as weather condition, supply air temperature, primary air fraction and internal load. A guideline for determination of a cost efficient...

  6. Study of the effects of ambient conditions upon the performance of fan powered, infrared, natural gas burners. Quarterly technical progress report, October 1, 1996--December 31, 1996

    SciTech Connect (OSTI)

    Bai, T.

    1997-01-01T23:59:59.000Z

    This quarterly technical progress report describes work performed under DOE Grant No. DE-FG22-94MT94011 during the period September 1, 1996 to December 31, 1996 which covers the nineth quarter of the project. The objective of this investigation is to characterize the operation of a fan powered infrared burner (IR burner) at various gas compositions and ambient conditions and develop design guidelines for appliances containing PIR burners for satisfactory performance. The fan powered infrared burner is a technology introduced more recently in the residential and commercial markets. It is a surface combustor that elevates the temperature of the burner head to a radiant condition. A variety of metallic and ceramic materials are used for the burner heads. It has been demonstrated that infrared burners produce low CO and NO{sub x} emissions in a controlled geometric space. As the environmental regulations become more stringent, infrared burners are receiving increasing interests.

  7. astovl lift-fan aircraft: Topics by E-print Network

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

    Generation CiteSeer Summary: Many aircraft make use of an on-board oxygen generation system to provide breathing oxygen for the aircrew. Compared to historical experience, there...

  8. Sediment-rich meltwater plumes and ice-proximal fans at the margins of modern and ancient tidewater glaciers: Observations and modelling

    E-Print Network [OSTI]

    Dowdeswell, Julian A.; Hogan, Kelly A.; Arnold, Neil S.; Mugford, Ruth I.; Wells, Martin; Hirst, J. Philip P.; Decalf, Carole

    2015-04-11T23:59:59.000Z

    products), together with calculated solar radiation receipts, to calculate melt. The ‘degree-day’ parameters relating temperature and solar radiation receipts to melting differ between ice and snow surfaces, to account for the lower albedo of ice... Basin, the sand prone component of the larger of these subaqueous outwash events can be tracked for 10 to 15 km in radius; in the proximal areas, a single event may have deposited 2 to 3 m of sandstone (Hirst, 2012) although, typically, the fans were...

  9. Energy Performance Testing of Asetek's RackCDU System at NREL's High Performance Computing Data Center

    SciTech Connect (OSTI)

    Sickinger, D.; Van Geet, O.; Ravenscroft, C.

    2014-11-01T23:59:59.000Z

    In this study, we report on the first tests of Asetek's RackCDU direct-to-chip liquid cooling system for servers at NREL's ESIF data center. The system was simple to install on the existing servers and integrated directly into the data center's existing hydronics system. The focus of this study was to explore the total cooling energy savings and potential for waste-heat recovery of this warm-water liquid cooling system. RackCDU captured up to 64% of server heat into the liquid stream at an outlet temperature of 89 degrees F, and 48% at outlet temperatures approaching 100 degrees F. This system was designed to capture heat from the CPUs only, indicating a potential for increased heat capture if memory cooling was included. Reduced temperatures inside the servers caused all fans to reduce power to the lowest possible BIOS setting, indicating further energy savings potential if additional fan control is included. Preliminary studies manually reducing fan speed (and even removing fans) validated this potential savings but could not be optimized for these working servers. The Asetek direct-to-chip liquid cooling system has been in operation with users for 16 months with no necessary maintenance and no leaks.

  10. Design manual for high temperature hot water and steam systems

    SciTech Connect (OSTI)

    Cofield, R.E. Jr.

    1984-01-01T23:59:59.000Z

    The author presents aspects of high temperature hot water and steam generating systems. It covers all the calculations that must be made for sizing and then selecting the equipment that will make up an energy system. The author provides essential information on loan analysis, types of fuel, storage requirements, handling facilities, waste disposal, HVAC needs, and back-up systems. Also included are the calculations needed for determining the size of compressors, air pollution devices, fans, filters, and other supplementary equipment.

  11. 878 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 19, NO. 4, AUGUST 2010 A Flat Heat Pipe Architecture Based on

    E-Print Network [OSTI]

    MacDonald, Noel C.

    878 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 19, NO. 4, AUGUST 2010 A Flat Heat Pipe, such as microprocessor chip surfaces, thereby reducing thermal contact resistance and improving system packaging. Fluid. INTRODUCTION COOLING devices such as heat sinks, fans, and heat pipes have long been utilized for cooling

  12. Design and Operation of Fan-Coil Units in Using River Water as Chilled Water

    E-Print Network [OSTI]

    Jiang, A.; Chen, H.; Ma, W.; Zhu, H.

    2006-01-01T23:59:59.000Z

    ) in the system. An approximate formula is proposed for computing the cooling capacity of FCUs when the temperature of water supply is a little higher than designed temperature. Finally, recommendations are given for the design of the FCUs to follow dry operating...

  13. Human portable preconcentrator system

    DOE Patents [OSTI]

    Linker, Kevin L. (Albuquerque, NM); Bouchier, Francis A. (Albuquerque, NM); Hannum, David W. (Albuquerque, NM); Rhykerd, Jr., Charles L. (Albuquerque, NM)

    2003-01-01T23:59:59.000Z

    A preconcentrator system and apparatus suited to human portable use wherein sample potentially containing a target chemical substance is drawn into a chamber and through a pervious screen. The screen is adapted to capture target chemicals and then, upon heating, to release those chemicals into the chamber. Chemicals captured and then released in this fashion are then carried to a portable chemical detection device such as a portable ion mobility spectrometer. In the preferred embodiment, the means for drawing sample into the chamber comprises a reversible fan which, when operated in reverse direction, creates a backpressure that facilitates evolution of captured target chemicals into the chamber when the screen is heated.

  14. Improving Steam System Performance: A Sourcebook for Industry, Second Edition (Book) (Revised)

    SciTech Connect (OSTI)

    Not Available

    2012-10-01T23:59:59.000Z

    Improving Steam System Performance: A Sourcebook for Industry was developed for the U.S. Department of Energy's (DOE) Advanced Manufacturing Office (AMO), formerly the Industrial Technologies Program. AMO undertook this project as a series of sourcebook publications. Other topics in this series include: compressed air systems, pumping systems, fan systems, process heating and motor and drive systems. For more information about program resources, see AMO in the Where to Find Help section of this publication.

  15. Stay Cool for Less Money with a Ceiling Fan | Department of Energy

    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 33Frequently AskedEnergyIssues DOE's NuclearSpurring SolarSystem,DepartmentofStatusAbove

  16. Effect of a Radiant Panel Cooling System on Indoor Air Quality of a Conditioned Space

    E-Print Network [OSTI]

    Mohamed, E.; Abdalla, K. N.

    2010-01-01T23:59:59.000Z

    This paper discusses the effect of a radiant cooling panel system on an indoor air quality (IAQ) of a conditioned space. In this study, ceiling radiant cooling panel, mechanical ventilation with fan coil unit (FCU) and 100% fresh air are used...

  17. System-level, Unified In-band and Out-of-band Dynamic Thermal Control

    E-Print Network [OSTI]

    of the decrease in computation capacity. Less studied are out-of-band techniques (e.g. CPU cooling fans [10]) that operate completely outside the critical performance path of an application. Out-of-band techniques cool system slowdowns or shutdowns. Techniques such as dynamically scaling down the voltage of the CPUs

  18. Optimizing the Mass Flow and Temperature Difference in a Cooling System for Energy Conservation

    E-Print Network [OSTI]

    Hart, M. N.; Bond, S. K.

    1980-01-01T23:59:59.000Z

    the fan speed and therefore the amount of circulating air in most cases is more energy efficient than raising the chilled water temperature. Either alternative is viable only if the system was originally over-designed or the refrigeration load has been...

  19. The China Motor Systems Energy Conservation Program: A major national initiative to reduce motor system energy use in China

    SciTech Connect (OSTI)

    Nadel, Steven; Wang, Wanxing; Liu, Peter; McKane, Aimee T.

    2001-05-31T23:59:59.000Z

    Electric motor systems are widely used in China to power fans, pumps, blowers, air compressors, refrigeration compressors, conveyers, machinery, and many other types of equipment. Overall, electric motor systems consume more than 600 billion kWh annually, accounting for more than 50 percent of China's electricity use. There are large opportunities to improve the efficiency of motor systems. Electric motors in China are approximately 2-4 percent less efficient on average than motors in the U.S. and Canada. Fans and pumps in China are approximately 3-5 percent less efficient than in developed countries. Even more importantly, motors, fans, pumps, air compressors and other motor-driven equipment are frequently applied with little attention to system efficiency. More optimized design, including appropriate sizing and use of speed control strategies, can reduce energy use by 20 percent or more in many applications. Unfortunately, few Chinese enterprises use or even know about these energy-saving practices. Opportunities for motor system improvements are probably greater in China than in the U.S. In order to begin capturing these savings, China is establishing a China Motor Systems Energy Conservation Program. Elements of this program include work to develop minimum efficiency standards for motors, a voluntary ''green motor'' labeling program for high-efficiency motors, efforts to develop and promote motor system management guidelines, and a training, technical assistance and financing program to promote optimization of key motor systems.

  20. An Evaluation of Energy-Saving Retrofits from the Texas LoanSTAR Program

    E-Print Network [OSTI]

    Haberl, J. S.; Claridge, D. E.; Heneghan, T.; Sieggreen, R.; Sims, J.

    1996-01-01T23:59:59.000Z

    for future CV to VAV air-handler retrofits. First, it is important to commission the VAV system once it has been installed and prevent the building operators from raising the static pressure to the point where the system no longer functions as a VAV. Second... 9: Estimated Costs Compared To The 1993 Utility Costs... 38 Figure 10: Site Area 41 Figure 11: Estimated Cost Per Square Foot Of Conditioned Area (VFD To AHU) 43 Figure 12: Estimated Cost Per Square Foot Of Conditioned Area (HVACVAV) 45 Figure 13...

  1. Investigation of a radiantly heated and cooled office with an integrated desiccant ventilation unit 

    E-Print Network [OSTI]

    Gong, Xiangyang

    2009-05-15T23:59:59.000Z

    desiccant ventilation unit consumes 5.6% more primary energy than a single duct VAV system; it would consumes 11.4% less primary energy when the system is integrated with a presumed passive desiccant ventilation unit....

  2. Fuel processor for fuel cell power system

    DOE Patents [OSTI]

    Vanderborgh, Nicholas E. (Los Alamos, NM); Springer, Thomas E. (Los Alamos, NM); Huff, James R. (Los Alamos, NM)

    1987-01-01T23:59:59.000Z

    A catalytic organic fuel processing apparatus, which can be used in a fuel cell power system, contains within a housing a catalyst chamber, a variable speed fan, and a combustion chamber. Vaporized organic fuel is circulated by the fan past the combustion chamber with which it is in indirect heat exchange relationship. The heated vaporized organic fuel enters a catalyst bed where it is converted into a desired product such as hydrogen needed to power the fuel cell. During periods of high demand, air is injected upstream of the combustion chamber and organic fuel injection means to burn with some of the organic fuel on the outside of the combustion chamber, and thus be in direct heat exchange relation with the organic fuel going into the catalyst bed.

  3. Variable temperature seat climate control system

    DOE Patents [OSTI]

    Karunasiri, Tissa R. (Van Nuys, CA); Gallup, David F. (Pasadena, CA); Noles, David R. (Glendale, CA); Gregory, Christian T. (Alhambra, CA)

    1997-05-06T23:59:59.000Z

    A temperature climate control system comprises a variable temperature seat, at least one heat pump, at least one heat pump temperature sensor, and a controller. Each heat pump comprises a number of Peltier thermoelectric modules for temperature conditioning the air in a main heat exchanger and a main exchanger fan for passing the conditioned air from the main exchanger to the variable temperature seat. The Peltier modules and each main fan may be manually adjusted via a control switch or a control signal. Additionally, the temperature climate control system may comprise a number of additional temperature sensors to monitor the temperature of the ambient air surrounding the occupant as well as the temperature of the conditioned air directed to the occupant. The controller is configured to automatically regulate the operation of the Peltier modules and/or each main fan according to a temperature climate control logic designed both to maximize occupant comfort during normal operation, and minimize possible equipment damage, occupant discomfort, or occupant injury in the event of a heat pump malfunction.

  4. 2014-12-31 Issuance: Energy Conservation Standards for Commercial and Industrial Fans and Blowers; Extension of Comment Period for Notice of Data Availability

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register extension of comment period for notice of data availability regarding energy conservation standards for commercial and industrial fans and blowers, as issued by the Deputy Assistant Secretary for Energy Efficiency on December 31, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  5. 2014-10-27 Issuance: Energy Conservation Standards for Ceiling Fan Light Kits; Notice of Public Meeting and Availability of the Preliminary Technical Support Document

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register notice of public meeting and availability of the preliminary technical support document regarding energy conservation standards for ceiling fan light kits, as issued by the Deputy Assistant Secretary for Energy Efficiency on October 27, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  6. 2014-09-16 Issuance: Energy Conservation Standards for Ceiling Fans; Notice of Public Meeting and Availability of Preliminary Technical Support Document

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register notice of public meeting and availability of preliminary technical support document regarding energy conservation standards for ceiling fans, as issued by the Deputy Assistant Secretary on September 16, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  7. ETME 422 -REFRIGERATION & HVAC SYSTEMS FALL 2011 LEC -10:00 -10:50am M W F RH 312

    E-Print Network [OSTI]

    Dyer, Bill

    10/31/2011 ETME 422 - REFRIGERATION & HVAC SYSTEMS FALL 2011 LEC - 10:00 - 10:50am M W F RH 312. -- Refrigeration and heating, ventilating and air-conditioning (HVAC) for comfort and industrial applications, low temperature refrigeration cycles; air distribution and fan-duct analysis, design/selection of HVAC

  8. Appendix F Field Verification of Zonally Controlled Systems Page F-1 2013 Residential Compliance Manual January 2014

    E-Print Network [OSTI]

    shown that zonally controlled cooling systems that utilize bypass ducts or that substantially reduce in the supply ducts to send supply air from a single air handler to different zones, as needed, rather than fan when one or more of the zone dampers close and restrict airflow to just a portion of the supply

  9. Interaction of a solar space heating system with the thermal behavior of a building

    SciTech Connect (OSTI)

    Vilmer, C.; Warren, M.L.; Auslander, D.

    1980-12-01T23:59:59.000Z

    The thermal behavior of a building in response to heat input from an active solar space heating system is analyzed to determine the effect of the variable storage tank temperature on the cycling rate, on-time, and off-time of a heating cycle and on the comfort characteristics of room air temperature swing and of offset of the average air temperature from the setpoint (droop). A simple model of a residential building, a fan coil heat-delivery system, and a bimetal thermostat are used to describe the system. A computer simulation of the system behavior has been developed and verified by comparisons with predictions from previous studies. The system model and simulation are then applied to determine the building response to a typical hydronic solar heating system for different solar storage temperatures, outdoor temperatures, and fan coil sizes. The simulations were run only for those cases where there was sufficient energy from storage to meet the building load requirements.

  10. Innovative, Cost Effective and Energy Efficient Desgin for New Construction at a Texas High School

    E-Print Network [OSTI]

    Khan, S.; Bible, M.

    2013-01-01T23:59:59.000Z

    , which includes innovative dual-duct Variable Air Volume (VAV) systems for cooling and pre-treated ventilation air delivery integrated with occupancy sensors and digital controls, and optimized HVAC controls for dynamic balancing of air and hydronic sides...

  11. Fermilab accelerator control system: Analog monitoring facilities

    SciTech Connect (OSTI)

    Seino, K.; Anderson, L.; Smedinghoff, J.

    1987-10-01T23:59:59.000Z

    Thousands of analog signals are monitored in different areas of the Fermilab accelerator complex. For general purposes, analog signals are sent over coaxial or twinaxial cables with varying lengths, collected at fan-in boxes and digitized with 12 bit multiplexed ADCs. For higher resolution requirements, analog signals are digitized at sources and are serially sent to the control system. This paper surveys ADC subsystems that are used with the accelerator control systems and discusses practical problems and solutions, and it describes how analog data are presented on the console system.

  12. Sundue, M. A. 2011 Helechos y Lycophytas, In: Flora de la Regin del Parque Nacional Ambor, Vol. 1. Ed. M. H. Nee. Editorial FAN, Santa Cruz de la Sierra, Bolivia.

    E-Print Network [OSTI]

    Barrington, David

    . Ed. M. H. Nee. Editorial FAN, Santa Cruz de la Sierra, Bolivia. Kessler, M. A. L. Moguel V., M. A and Bolivia. American Fern Journal 100. Sundue, M. A., M. B. Islam, and T. A. Ranker. 2010. Systematics Polystichum in Bolivia, with the descriptions of ten new species. Brittonia 57: 205 227. Sundue, M. A. & Prado

  13. Establishment of an Environmental Control Technology Laboratory with a Circulating Fluidized-Bed Combustion System

    SciTech Connect (OSTI)

    Wei-Ping Pan; Yan Cao; John Smith

    2007-03-31T23:59:59.000Z

    This report is to present the progress made on the project entitled ''Establishment of an Environmental Control Technology Laboratory (ECTL) with a Circulating Fluidized-Bed Combustion (CFBC) System'' during the period January 1, 2007 through March 31, 2007. The effort in this quarter has concentrated on installing the CFBC Facility and for conducting cold fluidization operations tests in the CFBC facility. The assembly of the ash recirculation pipe duct from the cyclones back to the bed area of the combustor, including the upper and lower loop seals was completed. The electric bed pre-heater was installed to heat the fluidizing air as it enters the wind box. The induced draft fan along with its machine base and power supply was received and installed. The flue gas duct from secondary cyclone outlet to induced draft fan inlet was received and installed, as well as the induced fan flue gas discharge duct. Pressure testing from the forced draft fan to the outlet of the induced fan was completed. In related research a pilot-scale halogen addition test was conducted in the empty slipstream reactor (without (Selective Catalytic Reduction) SCR catalyst loading) and the SCR slipstream reactor with two commercial SCR catalysts. The greatest benefits of conducting slipstream tests can be flexible control and isolation of specific factors. This facility is currently used in full-scale utility and will be combined into 0.6MW CFBC in the future. This work attempts to first investigate performance of the SCR catalyst in the flue gas atmosphere when burning Powder River Basin (PRB), including the impact of PRB coal flue gas composition on the reduction of nitrogen oxides (NOx) and the oxidation of elemental mercury (Hg(0)) under SCR conditions. Secondly, the impacts of hydrogen halogens (Hydrogen fluoride (HF), Hydrogen chloride (HCl), Hydrogen Bromide (HBr) and Hydrogen Iodine (HI)) on Hg(0) oxidation and their mechanisms can be explored.

  14. Human portable preconcentrator system

    DOE Patents [OSTI]

    Linker, Kevin L.; Brusseau, Charles A.; Hannum, David W.; Puissant, James G.; Varley, Nathan R.

    2003-08-12T23:59:59.000Z

    A preconcentrator system and apparatus suited to human portable use wherein sample potentially containing a target chemical substance is drawn into a chamber and through a pervious screen. The screen is adapted to capture target chemicals and then, upon heating, to release those chemicals into the chamber. Chemicals captured and then released in this fashion are then carried to a portable chemical detection device such as a portable ion mobility spectrometer. In the preferred embodiment, the means for drawing sample into the chamber comprises a reversible fan which, when operated in reverse direction, creates a backpressure that facilitates evolution of captured target chemicals into the chamber when the screen is heated. The screen can be positioned directly in front of the detector prior to heating to improve detection capability.

  15. Hydronic rooftop cooling systems

    DOE Patents [OSTI]

    Bourne, Richard C. (Davis, CA); Lee, Brian Eric (Monterey, CA); Berman, Mark J. (Davis, CA)

    2008-01-29T23:59:59.000Z

    A roof top cooling unit has an evaporative cooling section that includes at least one evaporative module that pre-cools ventilation air and water; a condenser; a water reservoir and pump that captures and re-circulates water within the evaporative modules; a fan that exhausts air from the building and the evaporative modules and systems that refill and drain the water reservoir. The cooling unit also has a refrigerant section that includes a compressor, an expansion device, evaporator and condenser heat exchangers, and connecting refrigerant piping. Supply air components include a blower, an air filter, a cooling and/or heating coil to condition air for supply to the building, and optional dampers that, in designs that supply less than 100% outdoor air to the building, control the mixture of return and ventilation air.

  16. Systems

    E-Print Network [OSTI]

    Chapter 1. Systems. 1.1. On Line. In this introductory section we will pose no exercises, but instead, will detail. how to use Maple to solve problems in linear ...

  17. SUBSURFACE VISUAL ALARM SYSTEM ANALYSIS

    SciTech Connect (OSTI)

    D.W. Markman

    2001-08-06T23:59:59.000Z

    The ''Subsurface Fire Hazard Analysis'' (CRWMS M&O 1998, page 61), and the document, ''Title III Evaluation Report for the Surface and Subsurface Communication System'', (CRWMS M&O 1999a, pages 21 and 23), both indicate the installed communication system is adequate to support Exploratory Studies Facility (ESF) activities with the exception of the mine phone system for emergency notification purposes. They recommend the installation of a visual alarm system to supplement the page/party phone system The purpose of this analysis is to identify data communication highway design approaches, and provide justification for the selected or recommended alternatives for the data communication of the subsurface visual alarm system. This analysis is being prepared to document a basis for the design selection of the data communication method. This analysis will briefly describe existing data or voice communication or monitoring systems within the ESF, and look at how these may be revised or adapted to support the needed data highway of the subsurface visual alarm. system. The existing PLC communication system installed in subsurface is providing data communication for alcove No.5 ventilation fans, south portal ventilation fans, bulkhead doors and generator monitoring system. It is given that the data communication of the subsurface visual alarm system will be a digital based system. It is also given that it is most feasible to take advantage of existing systems and equipment and not consider an entirely new data communication system design and installation. The scope and primary objectives of this analysis are to: (1) Briefly review and describe existing available data communication highways or systems within the ESF. (2) Examine technical characteristics of an existing system to disqualify a design alternative is paramount in minimizing the number of and depth of a system review. (3) Apply general engineering design practices or criteria such as relative cost, and degree of difficulty and complexity in determining requirements in adapting existing data communication highways to support the subsurface visual alarm system. These requirements would include such things as added or new communication cables, added Programmable Logic Controller (PLC), Inputs and Outputs (I/O), and communication hardware components, and human machine interfaces and their software operating system. (4) Select the best data communication highway system based on this review of adapting or integrating with existing data communication systems.

  18. Experience on Commissioning of Heating/Cooling System and Thermal/Air Quality Environment 

    E-Print Network [OSTI]

    Hokoi, S.; Miura, H.; Huang, Y.; Nakahara, N.; Iwamae, A.

    2004-01-01T23:59:59.000Z

    the specified performance was realized at the heat-pump, e) whether the pipes for fan-coil units are suitably insulated. Output Heat loss from piping Upward and downward heat flow from hot-water mat Heat loss from piping (boiler - header) Heat loss from...Experience on Commissioning of Heating/Cooling System and Thermal/Air Quality Environment S. Hokoi*, H. Miura*, Y. Huang*, N. Nakahara** and A. Iwamae*** * Kyoto University, Kyoto 606-8501, Japan ** Nakahara Laboratory, Environmental Syst...

  19. Assessment of an active dry barrier for a landfill cover system

    SciTech Connect (OSTI)

    Stormont, J.C. [Sandia National Labs., Albuquerque, NM (United States); Ankeny, M.D.; Burkhard, M.E.; Tansey, M.K.; Kelsey, J.A. [Stephens (Daniel B.) and Associates, Inc., Albuquerque, NM (United States)

    1994-03-01T23:59:59.000Z

    A dry barrier is a layer of geologic material that is dried by air flow. An active dry barrier system can be designed, installed, and operated as part of a landfill cover system. An active system uses blowers and fans to move air through a high-permeability layer within the cover system. Depending principally on the air-flow rate, it is possible for a dry barrier to remove enough water to substantially reduce the likelihood of water percolating through the cover system. If a material with a relatively great storage capacity, such as processed tuff, is used as the coarse layer, then the efficiency of the dry barrier will be increased.

  20. Study of the effects of ambient conditions upon the performance of fan powered, infrared, natural gas burners. Quarterly technical progress report, January 1, 1995--March 31, 1995

    SciTech Connect (OSTI)

    Bai, Tiejun

    1995-04-01T23:59:59.000Z

    The objective of this investigation is to characterize the operation of fan powered infrared (PIR) burner at various barometric pressures (operating altitude) and gas compositions and develop design guidelines for appliances containing PIR burners for satisfactory performance. In this program, the theoretical basis for the behavior of PIR burners will be established through analysis of the combustion, heat and mass transfer, and other related processes that determine the performance of PIR burners. Based on the results of this study, a burner performance model for radiant output will be developed. The model will be applied to predict the performance of the selected burner and will also be modified and improved through comparison with experimental results. During this period, laboratory facilities that are necessary for conducting this research are completed. The student research assistants have started working in the laboratory. The selection of the test burner has completed. The preparation and instrumentation of this test burner is underway. The theoretical analysis and modeling of the fundamental combustion process of the PIR burner is progressing well. A study of the existing models are being conducted, which will yield specific direction and recommendations for the new model to be developed.

  1. Study of the effects of ambient conditions upon the performance of fan powered, infrared, natural gas burners. Quarterly technical progress report, September 1--September 30, 1994

    SciTech Connect (OSTI)

    Bai, T.

    1994-10-01T23:59:59.000Z

    The objective of this investigation is to characterize the operation of fan powered infrared(PIR) burner at various barometric pressures (operating altitude) and gas compositions and develop design guidelines for appliances containing PIR burners for satisfactory performance. In this program, the theoretical basis for the behavior of PIR burners will be established through analysis of the combustion, heat and mass transfer, and other related processes which determine the performance of PIR burners. Based on the results of this study, a first order model of the performance of the burner, including radiant output will be developed. The model will be applied to predict the performance of the selected burner and modified through comparison with test results. Concurrently, an experimental setup will be devised and built. This experimental rig will be a modified appliance, capable of measuring the heat and combustion product output, as well as providing a means by which the radiant heat output can be measured. The burner will be selected from an existing commercial appliance, a commercial deep fat fryer, and will be of a scale that will be compatible with the laboratory facilities in the Combustion Laboratory at Clark Atlanta University. Theoretical analysis and formulation of the PIR burner performance model has been started and the development of the test facilities and experimental setup has also been initiated. These are described.

  2. Optimization of Multi-Stack Exhaust Systems - New System Design Application

    E-Print Network [OSTI]

    Wang, G.; Cui, Y.; Yuill, D.; Liu, M.

    2002-01-01T23:59:59.000Z

    ). For a three-stack system, the total number of stack combinations is 7 and the calculation is classified into one of two situations. Controller VFD P DM DM DM Exhaust Fan Backflow damper P FS Fumehood Back flow ductMake-up damper For 521.... It is assumed that these static pressure set points are constant. A reset schedule could be integrated if necessary. The pressure loss in the duct is a function of the airflow through each duct section. The dynamic head difference is relatively small...

  3. Fuel processor for fuel cell power system. [Conversion of methanol into hydrogen

    DOE Patents [OSTI]

    Vanderborgh, N.E.; Springer, T.E.; Huff, J.R.

    1986-01-28T23:59:59.000Z

    A catalytic organic fuel processing apparatus, which can be used in a fuel cell power system, contains within a housing a catalyst chamber, a variable speed fan, and a combustion chamber. Vaporized organic fuel is circulated by the fan past the combustion chamber with which it is in indirect heat exchange relationship. The heated vaporized organic fuel enters a catalyst bed where it is converted into a desired product such as hydrogen needed to power the fuel cell. During periods of high demand, air is injected upstream of the combustion chamber and organic fuel injection means to burn with some of the organic fuel on the outside of the combustion chamber, and thus be in direct heat exchange relation with the organic fuel going into the catalyst bed.

  4. Processes controlling a volcaniclastic turbiditic system during the last climatic cycle: Example of the Cilaos deep-sea fan, offshore La Runion Island

    E-Print Network [OSTI]

    Copernic, 29200 Plouzané, France d Laboratoire Magmas et Volcans UMR 6524, CNRS-IRD-Université Blaise

  5. Water-loop heat pump systems

    SciTech Connect (OSTI)

    Eley, C.; Hydeman, M. (Eley (Charles) Associates, San Francisco, CA (United States))

    1992-12-01T23:59:59.000Z

    Water-loop heat pump (WLHP) systems are reliable, versatile, energy-efficient alternatives to conventional systems such as packaged rooftop or central chiller systems. These systems offer low installed costs, unparalleled design flexibility, and an inherent ability to recover heat in a variety of commercial and multifamily residential buildings for both new construction and retrofit markets. Southern California Edison Co. (SCE) teamed with EPRI to develop a comprehensive design guide for WLHP systems that incorporated recent research by EPRI, SCE, and others. The project team reviewed current literature, equipment data, and design guidelines from equipment manufacturers. They next discussed design and application practices with consulting engineers as well as design and building contractors. The team also ran extensive computer simulations on commercial and multifamily residential building models for Southern California, both to determine the sensitivity of energy use to WLHP system design parameters and to establish optimal design parameters. This information culminated in a comprehensive engineering guide. Volume 1 of this report, provides step-by-step technical design data for selection, application, and specification of WLHP systems. This guide emphasizes energy-efficient design principles and incorporates the findings of the computer simulations and research. For example, it recommends lowering the loop temperature in buildings dominated by internal loads. Reducing the loop temperature from 90 to 80[degrees]F provides a 7--10% savings in the total system energy in Southern California climate areas. Other recommendations include (1) installing a cooling tower with a propeller fan, which uses one fourth to one third of the energy of a cooling tower with a centrifugal fan; and (2) incorporating variable-speed pumps in conjunction with two-position valves in the heat pumps to reduce the system pump energy use by up to 50%.

  6. Operation technology of air treatment system in nuclear facilities

    E-Print Network [OSTI]

    Chun, Y B; Hwong, Y H; Lee, H K; Min, D K; Park, K J; Uom, S H; Yang, S Y

    2001-01-01T23:59:59.000Z

    Effective operation techniques were reviewed on the air treatment system to protect the personnel in nuclear facilities from the contamination of radio-active particles and to keep the environment clear. Nuclear air treatment system consisted of the ventilation and filtering system was characterized by some test. Measurement of air velocity of blowing/exhaust fan in the ventilation system, leak tests of HEPA filters in the filtering, and measurement of pressure difference between the areas defined by radiation level were conducted. The results acquired form the measurements were reflected directly for the operation of air treatment. In the abnormal state of virus parts of devices composted of the system, the repairing method, maintenance and performance test were also employed in operating effectively the air treatment system. These measuring results and techniques can be available to the operation of air treatment system of PIEF as well as the other nuclear facilities in KAERI.

  7. Teaching Organic Farming and Gardening: Resources for Instructors, 3rd Edition. Part 1 - Skills and Practices

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    and pad and fan type cooling systems are normally positionedheating, the pad and fan cooling system will be activated toheating and cooling, bench systems. Resources SUPPLEMENT 1

  8. Evaluation on Energy Performance of Heating Plant System Installed Energy Saving Technologies

    E-Print Network [OSTI]

    Song, Y.; Akashi, Y.; Kuwahara, Y.; Baba, Y.; Iribe, M.

    2004-01-01T23:59:59.000Z

    of Production Area [GJ (MBtu)] Electric Consumption [MWh (MBtu)] Refrigerating Machines Pumps, Fans 2002 COP[-] Turbo Screw Iced-thermalSystem WholeSystem Figure3. Relation Between Cooling Water Temperature and the COP of Refrigerating machine and System 0 2 4... Production Area (North) Production Area (South) Water Treatment Plant 21Cells Unit (14.1MW) Turbo Refrigerating Machines (1.4MW, 2units/ 4.2MW,6units) Screw Refrigerating Machines (0.8MW, 2units) Iced-thermal Storage Tank (28.5GJ, 2units) HEX for Additional...

  9. Ceiling Fan | 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.Telluric Survey asWest, New Jersey: EnergyGeothermal Heat Pumps

  10. THE WORLD'S Biggest Fan Collection

    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 742EnergyOn April 23, 2014,ZaleskiThis Decision considers anExercise PlanningCOUNCIL Office

  11. Heat pump system

    DOE Patents [OSTI]

    Swenson, Paul F.; Moore, Paul B.

    1983-06-21T23:59:59.000Z

    An air heating and cooling system for a building includes an expansion type refrigeration circuit and a vapor power circuit. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The vapor power circuit includes two heat exchangers, one of which is disposed in series air flow relationship with the indoor refrigeration circuit heat exchanger and the other of which is disposed in series air flow relationship with the outdoor refrigeration circuit heat exchanger. Fans powered by electricity generated by a vapor power circuit alternator circulate indoor air through the two indoor heat exchangers and circulate outside air through the two outdoor heat exchangers. The system is assembled as a single roof top unit, with a vapor power generator and turbine and compressor thermally insulated from the heat exchangers, and with the indoor heat exchangers thermally insulated from the outdoor heat exchangers.

  12. Heat pump system

    DOE Patents [OSTI]

    Swenson, Paul F. (Shaker Heights, OH); Moore, Paul B. (Fedhaven, FL)

    1983-01-01T23:59:59.000Z

    An air heating and cooling system for a building includes an expansion type refrigeration circuit and a vapor power circuit. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The vapor power circuit includes two heat exchangers, one of which is disposed in series air flow relationship with the indoor refrigeration circuit heat exchanger and the other of which is disposed in series air flow relationship with the outdoor refrigeration circuit heat exchanger. Fans powered by electricity generated by a vapor power circuit alternator circulate indoor air through the two indoor heat exchangers and circulate outside air through the two outdoor heat exchangers. The system is assembled as a single roof top unit, with a vapor power generator and turbine and compressor thermally insulated from the heat exchangers, and with the indoor heat exchangers thermally insulated from the outdoor heat exchangers.

  13. Ventilation System Effectiveness and Tested Indoor Air Quality Impacts

    SciTech Connect (OSTI)

    Rudd, A.; Bergey, D.

    2014-02-01T23:59:59.000Z

    Ventilation system effectiveness testing was conducted at two unoccupied, single-family, detached lab homes at the University of Texas - Tyler. Five ventilation system tests were conducted with various whole-building ventilation systems. Multizone fan pressurization testing characterized building and zone enclosure leakage. PFT testing showed multizone air change rates and interzonal airflow. Cumulative particle counts for six particle sizes, and formaldehyde and other Top 20 VOC concentrations were measured in multiple zones. The testing showed that single-point exhaust ventilation was inferior as a whole-house ventilation strategy. It was inferior because the source of outside air was not direct from outside, the ventilation air was not distributed, and no provision existed for air filtration. Indoor air recirculation by a central air distribution system can help improve the exhaust ventilation system by way of air mixing and filtration. In contrast, the supply and balanced ventilation systems showed that there is a significant benefit to drawing outside air from a known outside location, and filtering and distributing that air. Compared to the Exhaust systems, the CFIS and ERV systems showed better ventilation air distribution and lower concentrations of particulates, formaldehyde and other VOCs. System improvement percentages were estimated based on four System Factor Categories: Balance, Distribution, Outside Air Source, and Recirculation Filtration. Recommended System Factors could be applied to reduce ventilation fan airflow rates relative to ASHRAE Standard 62.2 to save energy and reduce moisture control risk in humid climates. HVAC energy savings were predicted to be 8-10%, or $50-$75/year.

  14. A Review of Thermal Acoustical and Special Project Requirements Data in Designing a Duct System

    E-Print Network [OSTI]

    Lebens, A. F.

    1986-01-01T23:59:59.000Z

    less than acceptable environment for occupants could occur. AIR LEAKAGE Probably the most neglected design criteria for duct work is air leakage. Testing by SMACNA (HVAC Air Duct Leakage Test Manual. First Edition, August. 1985), and TIM (Thermal... 48 48 48 Appendix A of the SMACNA HVAC Air Duct Leakage Test Manual gives leakage as a percent of flow in a system by Leakage Class, fan CFM, and static pressure. The leakage in a 1" static pressure system can be as high as 24 percent in Leakage...

  15. Continuous Commissioning® Leading Energy Project Process - An Industry Approach 

    E-Print Network [OSTI]

    Liu, M.; Wang, J.; Hansen, K.; Seltzer, A.

    2005-01-01T23:59:59.000Z

    ,000 CFM to over 150,000 CFM. The building automation varies from the most advanced system with wireless sensors to aged pneumatic controllers. Table 2 summarizes both the retrofit and optimization measures for each building. The primary system... chillers, 10 hot water boilers 2 Single duct VAV AHUs DDC 2 1972 49,436 Office 6:00/ 8:00 5:00/9:00 1 water cooled chiller, 1 hot water boiler 1 single duct VAV AHU DDC and pneumatic 3 1970 71,000 Office 6:00/ 8:00 5:00/9:00 3 air cooled chillers...

  16. Thermal decay in underfloor air distribution (UFAD) systems: Fundamentals and influence on system performance

    E-Print Network [OSTI]

    Lee, Kwang Ho; Schiavon, Stefano; Bauman, Fred; Webster, Tom

    2012-01-01T23:59:59.000Z

    a comparison of room cooling load and supply air to roomtemperatures, cooling load profiles, supply airflow rate,water cooling coil, hot water heating coil and supply fan.

  17. Koch Institute Corners of Main/Vassar Streets and Main/Ames Streets

    E-Print Network [OSTI]

    Leiserson, Charles E.

    Brownfield redevelopment Storm water filtration system Reflective roof material which will reduce the heat island effect Heat recovery methods incorporated into HVAC systems VAV system and right sizing of HVAC energy A construction waste management plan that recycles and salvages waste Project Managers

  18. applied mechanics fluids: Topics by E-print Network

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

    18.Fans, Blowers, Compressors. Identify the fan selection requirements for the system. 12;3 19. Flow of Air in Ducts 2005 Pearson of a fan. A sudden contraction...

  19. Texas LoanSTAR Monitoring & Analysis Program- Characterizing Loanstar Buildings & Energy Consumption

    E-Print Network [OSTI]

    Challa, V.; Athar, A.; Abbas, M.; Claridge, D.; Haberl, J.

    ) conversion. Other widely recommended measures arc the conversion of incandescent lighting to fluorescent lighting and installing an Energy Monitoring and Control System (EMC...$). TIle estimated savings frollllhese retrofits arc more or less in line..., TX, May 13-14, 1992 Code Building Area Recommended Retrofits Aetro", Completion SQ-It 081e ZEC zachry Engineerlng Cenler 324,000 VAV (48Ohp), EMCS Ma,ch 1991 U,T, Austin EOB Educalion Buildinn 251,161 UOhlS Incd ,OS, VAV (4oohp), VSP 75hp...

  20. AC System Equipment Specification, Installation and Operational Options for Improved Indoor Humidity Control

    E-Print Network [OSTI]

    Shirey, D. B.

    of 80?F (26.7?C) dry-bulb temperature and 67?F (19.4?C) wet-bulb temperature air entering the indoor unit (AHRI 2006), the equipment SHRs range from 0.67 to 0.8. Thus, the dehumidification fraction (one minus SHR) varies from 0.2 (20%) to 0.33 (33... Building Systems in Hot and Humid Climates, Plano, TX, December 15-17, 2008 Figure 3. Latent Capacity Degradation with Supply Air Fan Overrun at Reduced Air Flow compressor on cycle (Shirey et al. 2006). The plotted lines are results from a...

  1. Intelligent system design with fixed-base simulation validation for general aviation

    E-Print Network [OSTI]

    Rong, Jie; Ding, Yuanyuan; Valasek, J.; Painter, John H.

    2003-10-05T23:59:59.000Z

    waming messages and the ultimate recommended conflicts free flight. A snapshot of the moving map display is shown in Fig. 4. The small aircraft icon in the middle of the moving map represents the subject aircraft, and the weather radar image... is represented by the fan-shaped area in front of the icon. The brown line shows the original flight path that encounters the weather or traffic conflict. The blue line indicates the recommended flight path by the agcnt system. Other icons on the moving map...

  2. Advanced Integrated Systems Technology Development

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    dual max control strategy has been shown to decrease heating energydual max control strategy has been shown to decrease heating energydual max strategy significantly lowers heating, fan and cooling energy..

  3. Report of Energy Efficiency Study and Metering/Utilities Profile for Electricity Deregulation at Texas A&M International University (TAMIU) Laredo, Texas

    E-Print Network [OSTI]

    Zhu, Y.; Turner, W. D.; Claridge, D. E.

    1999-01-01T23:59:59.000Z

    . Nine double duct VAV (DDVAV) AHUs (1-15 hp, 2-25 hp, and 6-30 hp) and a make-up air unit serve the Library building. The fans are equipped with VFDs. The static pressure setpoint is maintained by modulating the VFD speed. The static pressure setpoints..., CD and preheat reset schedules. 4. Optimize the static pressure reset schedule through non-intrusive balancing. 5. Adjust room temperature setpoint and optimize the mixing box control. 6. Measure the outside air flow and optimize the temperature...

  4. Comfort, perceived air quality, and work performance in a low-power task-ambient conditioning system

    E-Print Network [OSTI]

    Zhang, Hui Ph.D; Kim, DongEun; Arens, Edward A; Buchberger, Elena; Bauman, Fred; Huizenga, Charlie

    2008-01-01T23:59:59.000Z

    way that when the spot cooling supply fan is on, it deliversnozzle. When the spot cooling supply fan is off, the localducted supply of cool air (called the spot cooling line) to

  5. Computer Modeling VRF Heat Pumps in Commercial Buildings using EnergyPlus

    SciTech Connect (OSTI)

    Raustad, Richard

    2013-06-01T23:59:59.000Z

    Variable Refrigerant Flow (VRF) heat pumps are increasingly used in commercial buildings in the United States. Monitored energy use of field installations have shown, in some cases, savings exceeding 30% compared to conventional heating, ventilating, and air-conditioning (HVAC) systems. A simulation study was conducted to identify the installation or operational characteristics that lead to energy savings for VRF systems. The study used the Department of Energy EnergyPlus? building simulation software and four reference building models. Computer simulations were performed in eight U.S. climate zones. The baseline reference HVAC system incorporated packaged single-zone direct-expansion cooling with gas heating (PSZ-AC) or variable-air-volume systems (VAV with reheat). An alternate baseline HVAC system using a heat pump (PSZ-HP) was included for some buildings to directly compare gas and electric heating results. These baseline systems were compared to a VRF heat pump model to identify differences in energy use. VRF systems combine multiple indoor units with one or more outdoor unit(s). These systems move refrigerant between the outdoor and indoor units which eliminates the need for duct work in most cases. Since many applications install duct work in unconditioned spaces, this leads to installation differences between VRF systems and conventional HVAC systems. To characterize installation differences, a duct heat gain model was included to identify the energy impacts of installing ducts in unconditioned spaces. The configuration of variable refrigerant flow heat pumps will ultimately eliminate or significantly reduce energy use due to duct heat transfer. Fan energy is also studied to identify savings associated with non-ducted VRF terminal units. VRF systems incorporate a variable-speed compressor which may lead to operational differences compared to single-speed compression systems. To characterize operational differences, the computer model performance curves used to simulate cooling operation are also evaluated. The information in this paper is intended to provide a relative difference in system energy use and compare various installation practices that can impact performance. Comparative results of VRF versus conventional HVAC systems include energy use differences due to duct location, differences in fan energy when ducts are eliminated, and differences associated with electric versus fossil fuel type heating systems.

  6. Study of the effects of ambient conditions upon the performance of fan powered, infrared, natural gas burners. Quarterly report, April 1, 1996 - June 30, 1996

    SciTech Connect (OSTI)

    Bai, T.; Yeboah, Y.D.; Sampath, R.

    1996-07-01T23:59:59.000Z

    A porous radiant burner testing facility consisting of a commercial deep-fat fryer, an FTIR based spectral radiance measurement system, a set of flue gas analysis components, and a fuel gas mixing station was constructed. The measurement capabilities of the system were tested using methane and the test results were found to be consistent with the literature. Following the validation of the measurement system, various gas mixtures were tested to study the effect of gas compositions have on burner performance. Results indicated that the emissions vary with fuel gas composition and air/fuel ratio. The maximum radiant efficiency of the burner was obtained close to air/fuel ratio of 1.

  7. 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.

  8. 2.1E Sample Run Book

    E-Print Network [OSTI]

    Winkelmann, F.C.

    2010-01-01T23:59:59.000Z

    67.F SYST_4-TYPE VAVS COOLING PEAK SUPPLY AIR PEAK FLOW OA69,F SYST_-TYPE VAVS COOLING PEAK SUPPLY AIR PEAK FLOW OA67.F SYST_4-TYPE VAVS COOLING PEAK SUPPLY AIR PEAK FLOW OA

  9. Parallel and Statistical Analysis and Modeling of Nanometer VLSI Systems

    E-Print Network [OSTI]

    Liu, Xue-Xin

    2013-01-01T23:59:59.000Z

    layers. Advanced cooling techniques such as integratedtraditional fan-based cooling techniques are not sufficientcooling problems. Fast and accurate thermal analysis techniques

  10. Residential Forced Air System Cabinet Leakage and Blower Performance

    E-Print Network [OSTI]

    Walker, Iain S.

    2010-01-01T23:59:59.000Z

    CA.   CEC (2008b).  Residential Alternative Calculation Standard for Air Handlers in Residential Space Conditioning of Standards Options for Residential Air Handler Fans.   

  11. PNNL-22072 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830

    E-Print Network [OSTI]

    or heating, but the minimum for ventilation should always be met. In practice, control system integrators for large office buildings with variable-air-volume (VAV) heating, ventilating and air-conditioning (HVAC-flow rate that ensures the ventilation requirements of the occupants of the zone served are met

  12. Solar energy system performance evaluation: seasonal report for IBM System IA, Huntsville, Alabama

    SciTech Connect (OSTI)

    Not Available

    1980-05-01T23:59:59.000Z

    The analysis used is based on instrumented system data monitored and collected for at least one full season of operation. The long-term field performance of the installed system is reported. The Solar Energy System, Sims Prototype System 1A, was designed by IBM to provide 50 to 60% of the space heating and domestic hot water (DHW) preheating load to a 2000 square foot floor space single faily residence in the Huntsville area. The load design temperature inside the building was to be maintained at 70 degrees fahrenheit with auxiliary energy for heating supplied by an electric heat pump assisted by an electric resistance strip heater. Auxiliary energy for domestic hot water is from a conventional 20-gallon DHW storage tank. The solar energy system, uses air as the heat transport medium, has a 720 square foot Solar Energy Products Collector Array, a 22-ton rock storage located within the office building, a pump, heat exchanger, air handler, pre-heat tank, fan and associated plumbing. The system has five different modes of operation.

  13. Cryo Utilities Room Cooling System

    SciTech Connect (OSTI)

    Ball, G.S.; /Fermilab

    1989-01-26T23:59:59.000Z

    Many of the mechanical equipment failures at the Laboratory are due to the loss of cooling water. In order to insure the proper operating temperatures and to increase the reliability of the mechanical equipment in the D0 Cryo Utilities Room it is necessary to provide an independent liquid cooling system. To this end, an enclosed glycoVwater cooling system which transfers heat from two vane-type vacuum pumps and an air compressor to the outside air has been installed in the Cryo Utilities Room. From the appended list it can be seen that only the Thermal Precision PFC-121-D and Ingersoll-Rand WAC 16 deserve closer investigation based on price. The disadvantages of the WAC 16 are that: it runs a little warmer, it requires more valving to properly install a backup pump, inlet and outlet piping are not included, and temperature and pressure indicators are not included. Its only advantage is that it is $818 cheaper than the PFC-121-D. The advantages of the PFC-121-D are that: it has automatic pump switching during shutdown, it has a temperature regulator on one fan control, it has a switch which indicates proper operation, has a sight glass on the expansion tank, and comes with an ASME approved expansion tank and relief valve. For these reasons the Thermal Precision PFC-121-D was chosen. In the past, we have always found the pond water to be muddy and to sometimes contain rocks of greater than 1/2 inch diameter. Thus a system completely dependent on the pond water from the accelerator was deemed unacceptable. A closed system was selected based on its ability to greatly improve reliability, while remaining economical. It is charged with a 50/50 glycol/water mixture capable of withstanding outside temperatures down to -33 F. The fluid will be circulated by a totally enclosed air cooled Thermal Precision PFC-121-D pump. The system will be on emergency power and an automatically controlled backup pump, identical to the primary, is available should the main pump fail. The fan unit is used as a primary cooler and the trim cooler cools the fluid further on extremely hot days. The trim cooler has also been sized to cool the system in the event of a total shutdown provided that the pond water supply has adequate pressure. Due to a broken filter, we found it necessary to install a strainer in the pond water supply line. The expansion tank separates air bubbles, ensures a net positive suction head, protects against surges and over pressurization of the system, and allows for the filling of the system without shutting it off. All piping has been installed, flushed, charged with the glycol/water mix, and hydrostatically tested to 55 psi. The condition of all pumps and flow conditions will be recorded at the PLC. It has been decided not to include the regulator valve in the pond water return line. This valve was designated by the manufacturer to reduce the amount of water flowing through the trim cooler. This is not necessary in our application. There is some concern that the cooling fluid may cool the mechanical eqUipment too much when they are not operating or during very cold days. This issue will be addressed and the conclusion appended to this engineering note.

  14. A System for Smart Home Control of Appliances based on Timer and Speech Interaction

    E-Print Network [OSTI]

    Haque, S M Anamul; Islam, Md Ashraful

    2010-01-01T23:59:59.000Z

    The main objective of this work is to design and construct a microcomputer based system: to control electric appliances such as light, fan, heater, washing machine, motor, TV, etc. The paper discusses two major approaches to control home appliances. The first involves controlling home appliances using timer option. The second approach is to control home appliances using voice command. Moreover, it is also possible to control appliances using Graphical User Interface. The parallel port is used to transfer data from computer to the particular device to be controlled. An interface box is designed to connect the high power loads to the parallel port. This system will play an important role for the elderly and physically disable people to control their home appliances in intuitive and flexible way. We have developed a system, which is able to control eight electric appliances properly in these three modes.

  15. Vehicle cabin cooling system for capturing and exhausting heated boundary layer air from inner surfaces of solar heated windows

    DOE Patents [OSTI]

    Farrington, Robert B. (Golden, CO); Anderson, Ren (Broomfield, CO)

    2001-01-01T23:59:59.000Z

    The cabin cooling system includes a cooling duct positioned proximate and above upper edges of one or more windows of a vehicle to exhaust hot air as the air is heated by inner surfaces of the windows and forms thin boundary layers of heated air adjacent the heated windows. The cabin cooling system includes at least one fan to draw the hot air into the cooling duct at a flow rate that captures the hot air in the boundary layer without capturing a significant portion of the cooler cabin interior air and to discharge the hot air at a point outside the vehicle cabin, such as the vehicle trunk. In a preferred embodiment, the cooling duct has a cross-sectional area that gradually increases from a distal point to a proximal point to the fan inlet to develop a substantially uniform pressure drop along the length of the cooling duct. Correspondingly, this cross-sectional configuration develops a uniform suction pressure and uniform flow rate at the upper edge of the window to capture the hot air in the boundary layer adjacent each window.

  16. Load calculation and system evaluation for electric vehicle climate control

    SciTech Connect (OSTI)

    Aceves-Saborio, S.; Comfort, W.J. III

    1993-10-27T23:59:59.000Z

    Providing air conditioning for electric vehicles (EVs) represents an important challenge, because vapor compression air conditioners, which are common in gasoline powered vehicles, may consume a substantial part of the total energy stored in the EV battery. This report consists of two major parts. The first part is a cooling and heating load calculation for electric vehicles. The second part is an evaluation of several systems that can be used to provide the desired cooling and heating in EVs. Four cases are studied. Short range and full range EVs are each analyzed twice, first with the regular vehicle equipment, and then with a fan and heat reflecting windows, to reduce hot soak. Recent legislation has allowed the use of combustion heating whenever the ambient temperature drops below 5{degrees}C. This has simplified the problem of heating, and made cooling the most important problem. Therefore, systems described in this project are designed for cooling, and their applicability to heating at temperatures above 5{degrees}C is described. If the air conditioner systems cannot be used to cover the whole heating load at 5{degrees}C, then the vehicle requires a complementary heating system (most likely a heat recovery system or electric resistance heating). Air conditioners are ranked according to their overall weight. The overall weight is calculated by adding the system weight and the weight of the battery necessary to provide energy for system operation.

  17. Evaluation of the cooling fan efficiency index.

    E-Print Network [OSTI]

    Schiavon, Stefano; Melikov, Arsen

    2009-01-01T23:59:59.000Z

    thermal microenvironment, Ergonomics (submitted). Sun, W. ,ISO 7726, International Standard: Ergonomics of the thermalOther factors such as ergonomics, control options, etc. ,

  18. Popular privation: Suffering in fan cultures 

    E-Print Network [OSTI]

    Pawley, Daniel W

    2007-01-01T23:59:59.000Z

    the kind of suffering that occurs in mediated culture. To narrow the mediated-culture aspect of the study, I explore the topic of fandom, which I define as “the intentional socialization of textual consumption,” and I attempt to show how privation exists...

  19. Experimental investigation of an aspirated fan stage

    E-Print Network [OSTI]

    Schuler, Brian Joseph, 1974-

    2001-01-01T23:59:59.000Z

    This thesis focuses on the use of aspiration on compressor blade design. The pressure ratio can be significantly increased by controlling the development of the blade and endwall boundary layers. This concept is validated ...

  20. Submitting Organization Hongyou Fan Sandia National Laboratories

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

    C. Giannini, L. Tapfer, L. Vasanelli, J. Am. Ceram. Soc. 2000, 83, 2385. 22 D. K. Sarkar, F. Cloutier, M. A. El Khakani, J. Appl. Phys. 2005, 97, 084 302. 23 A. Fukuoka, H....

  1. Tai-Hsi Fan Andrei G. Fedorov

    E-Print Network [OSTI]

    Fan, Tai-Hsi

    diminishing the energy efficiency of the glass melting process. Unlike the foams formed on the free surface for conventional glass foams 2,3 cannot be used for the batch foams, and thus prediction of the apparent radiative characteristics of batch foams is the subject of this paper. In addition to glass manufacturing, understanding

  2. Cooling Effects of Fans | GE Global Research

    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 for4,645 3,625govInstrumentstdmadapInactiveVisitingContract Management Fermi Site Office (FSO) FSOConverting BiomassCoolWhy Do

  3. Fans for Cooling | 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 |CookingFAQsFacility OperationsFall:

  4. Whole House Fans | 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 Jump to:Ezfeedflag JumpID-fTri GlobalJump to:Westwood Renewables Jump to:meaningWillowTailII

  5. Fans for Cooling | 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|6721Energy 3_adv_battery.pdf More Fact Sheet:BetaFederalFall:

  6. Submitting Organization Hongyou Fan Sandia National Laboratories

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solid ... StrengtheningLabSubmitting Jobs Submitting Jobs 

  7. Meeting Residential Ventilation Standards Through Dynamic Control of Ventilation Systems

    SciTech Connect (OSTI)

    Sherman, Max H.; Walker, Iain S.

    2011-04-01T23:59:59.000Z

    Existing ventilation standards, including American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE) Standard 62.2, specify continuous operation of a defined mechanical ventilation system to provide minimum ventilation, with time-based intermittent operation as an option. This requirement ignores several factors and concerns including: other equipment such as household exhaust fans that might incidentally provide ventilation, negative impacts of ventilation when outdoor pollutant levels are high, the importance of minimizing energy use particularly during times of peak electricity demand, and how the energy used to condition air as part of ventilation system operation changes with outdoor conditions. Dynamic control of ventilation systems can provide ventilation equivalent to or better than what is required by standards while minimizing energy costs and can also add value by shifting load during peak times and reducing intake of outdoor air contaminants. This article describes the logic that enables dynamic control of whole-house ventilation systems to meet the intent of ventilation standards and demonstrates the dynamic ventilation system control concept through simulations and field tests of the Residential Integrated Ventilation-Energy Controller (RIVEC).

  8. Scaling and Optimization of Magnetic Refrigeration for Commercial Building HVAC Systems Greater than 175 kW in Capacity

    SciTech Connect (OSTI)

    Abdelaziz, Omar [ORNL] [ORNL; West, David L [ORNL] [ORNL; Mallow, Anne M [ORNL] [ORNL

    2012-01-01T23:59:59.000Z

    Heating, ventilation, air-conditioning and refrigeration (HVACR) account for approximately one- third of building energy consumption. Magnetic refrigeration presents an opportunity for significant energy savings and emissions reduction for serving the building heating, cooling, and refrigeration loads. In this paper, we have examined the magnet and MCE material requirements for scaling magnetic refrigeration systems for commercial building cooling applications. Scaling relationships governing the resources required for magnetic refrigeration systems have been developed. As system refrigeration capacity increases, the use of superconducting magnet systems becomes more applicable, and a comparison is presented of system requirements for permanent and superconducting (SC) magnetization systems. Included in this analysis is an investigation of the ability of superconducting magnet based systems to overcome the parasitic power penalty of the cryocooler used to keep SC windings at cryogenic temperatures. Scaling relationships were used to develop the initial specification for a SC magnet-based active magnetic regeneration (AMR) system. An optimized superconducting magnet was designed to support this system. In this analysis, we show that the SC magnet system consisting of two 0.38 m3 regenerators is capable of producing 285 kW of cooling power with a T of 28 K. A system COP of 4.02 including cryocooler and fan losses which illustrates that an SC magnet-based system can operate with efficiency comparable to traditional systems and deliver large cooling powers of 285.4 kW (81.2 Tons).

  9. Modeling Offgas Systems for the Hanford Waste Treatment Plant

    SciTech Connect (OSTI)

    Smith, Frank G., III

    2005-09-02T23:59:59.000Z

    To augment steady-state design calculations, dynamic models of three offgas systems that will be used in the Waste Treatment Plant now under construction at the Hanford Site were developed using Aspen Custom Modeler{trademark}. The offgas systems modeled were those for the High Level Waste (HLW) melters, Low Activity Waste (LAW) melters and HLW Pulse Jet Ventilation (PJV) system. The models do not include offgas chemistry but only consider the two major species in the offgas stream which are air and water vapor. This is sufficient to perform material and energy balance calculations that accurately show the dynamic behavior of gas pressure, temperature, humidity and flow throughout the systems. The models are structured to perform pressure drop calculations across the various unit operations using a combination of standard engineering calculations and empirical data based correlations for specific pieces of equipment. The models include process controllers, gas ducting, control valves, exhaust fans and the offgas treatment equipment. The models were successfully used to analyze a large number of operating scenarios including both normal and off-normal conditions.

  10. Energy Analysis and Energy Conservation Option for the Warehouse Facility at the Human Services Center Complex

    E-Print Network [OSTI]

    Farzad, M.; O'Neal, D. L.

    1986-01-01T23:59:59.000Z

    could be located in the north or northwest perimeter areas of a building depending on the climate and the prevailing wind directions. HVAC Systems The standards call for VAV systems in office buildings which are more than four stories high. Systems... ENERGY ANALYSIS AND ENERGY CONSERVATION OPTION FOR THE WAREHOUSE FACILITY AT THE HUMAN SERVICES CENTER COMPLEX DRAFT REPORT Submitted by Mohsen Farzad Dennis O'Neal Prepared For Energy Efficiency Division Texas Public Utility Commission Austin...

  11. Estimated costs of ventilation systems complying with the HUD ventilation standard for manufactured homes

    SciTech Connect (OSTI)

    Miller, J.D.; Conner, C.C.

    1993-11-01T23:59:59.000Z

    At the request of the US Department of Housing and Urban Development (HUD), the Pacific Northwest Laboratory estimated the material, labor, and operating costs for ventilation equipment needed for compliance with HUD`s proposed revision to the ventilation standard for manufactured housing. This was intended to bound the financial impacts of the ventilation standard revision. Researchers evaluated five possible prototype ventilation systems that met the proposed ventilation requirements. Of those five, two systems were determined to be the most likely used by housing manufacturers: System 1 combines a fresh air duct with the existing central forced-air system to supply and circulate fresh air to conditioned spaces. System 2 uses a separate exhaust fan to remove air from the manufactured home. The estimated material and labor costs for these two systems range from $200 to $300 per home. Annual operating costs for the two ventilation systems were estimated for 20 US cities. The estimated operating costs for System 1 ranged from $55/year in Las Vegas, Nevada, to $83/year in Bismarck, North Dakota. Operating costs for System 2 ranged from a low of $35/year in Las Vegas to $63/year in Bismarck. Thus, HUD`s proposed increase in ventilation requirements will add less than $100/year to the energy cost of a manufactured home.

  12. Erosion dynamics modelling in a coupled catchmentfan system with constant external forcing

    E-Print Network [OSTI]

    at the outlets of mountain valleys, forming portions of fans in plane view, which can merge downstreamtoform, incised fans of the Central Valley (Bull, 1964), the Death Valley (Hooke, 1972; Dorn et al., 1996; Jayco, 2005), the Panamint Valley (Blair, 1999a; Blair, 1999b; Blair, 1999c; Jayco, 2005), or the Owens Valley

  13. Advanced Controls for Residential Whole-House Ventilation Systems

    SciTech Connect (OSTI)

    Turner, William; Walker, Iain; Sherman, Max

    2014-08-01T23:59:59.000Z

    Whole-house ventilation systems are becoming commonplace in new construction, remodeling/renovation, and weatherization projects, driven by combinations of specific requirements for indoor air quality (IAQ), health and compliance with standards, such as ASHRAE 62.2. Ventilation systems incur an energy penalty on the home via fan power used to drive the airflow, and the additional space-conditioning load associated with heating or cooling the ventilation air. Finding a balance between IAQ and energy use is important if homes are to be adequately ventilated while not increasing the energy burden. This study used computer simulations to examine RIVEC the Residential Integrated Ventilation Controller - a prototype ventilation controller that aims to deliver whole-house ventilation rates that comply with ventilation standards, for the minimum use of energy. Four different whole-house ventilation systems were simulated, both with and without RIVEC, so that the energy and IAQ results could be compared. Simulations were conducted for 13 US climate zones, three house designs, and three envelope leakage values. The results showed that the RIVEC controller could typically return ventilation energy savings greater than 40percent without compromising long-term chronic or short-term acute exposures to relevant indoor contaminants. Critical and average peak power loads were also reduced as a consequence of using RIVEC.

  14. Bottom-Up Energy Analysis System - Methodology and Results

    E-Print Network [OSTI]

    McNeil, Michael A.

    2013-01-01T23:59:59.000Z

    et al. , TV Energy Consumption Trends and Energy-Efficiencyet al. , Fan Energy Consumption Trends and Energy-EfficiencyEnergy Consumption can change over time according to usage trends.

  15. Assessment of propfan propulsion systems for reduced environmental impact

    E-Print Network [OSTI]

    Peters, Andreas, Ph. D. Massachusetts Institute of Technology

    2010-01-01T23:59:59.000Z

    Current aircraft engine designs tend towards higher bypass ratio, low-speed fan designs for improved fuel burn, reduced emissions and noise. Alternative propulsion concepts include counter-rotating propfans (CRPs) which ...

  16. POWER SYSTEMS DEVELOPMENT FACILITY

    SciTech Connect (OSTI)

    Unknown

    2002-05-01T23:59:59.000Z

    This report discusses test campaign GCT3 of the Halliburton KBR transport reactor train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The transport reactor is an advanced circulating fluidized-bed reactor designed to operate as either a combustor or a gasifier using one of two possible particulate control devices (PCDs). The transport reactor was operated as a pressurized gasifier during GCT3. GCT3 was planned as a 250-hour test run to commission the loop seal and continue the characterization of the limits of operational parameter variations using a blend of several Powder River Basin coals and Bucyrus limestone from Ohio. The primary test objectives were: (1) Loop Seal Commissioning--Evaluate the operational stability of the loop seal with sand and limestone as a bed material at different solids circulation rates and establish a maximum solids circulation rate through the loop seal with the inert bed. (2) Loop Seal Operations--Evaluate the loop seal operational stability during coal feed operations and establish maximum solids circulation rate. Secondary objectives included the continuation of reactor characterization, including: (1) Operational Stability--Characterize the reactor loop and PCD operations with short-term tests by varying coal feed, air/coal ratio, riser velocity, solids circulation rate, system pressure, and air distribution. (2) Reactor Operations--Study the devolatilization and tar cracking effects from transient conditions during transition from start-up burner to coal. Evaluate the effect of process operations on heat release, heat transfer, and accelerated fuel particle heat-up rates. Study the effect of changes in reactor conditions on transient temperature profiles, pressure balance, and product gas composition. (3) Effects of Reactor Conditions on Syngas Composition--Evaluate the effect of air distribution, steam/coal ratio, solids circulation rate, and reactor temperature on CO/CO{sub 2} ratio, H{sub 2}/converted carbon ratio, gasification rates, carbon conversion, and cold and hot gas efficiencies. Test run GCT3 was started on December 1, 2000, with the startup of the thermal oxidizer fan, and was completed on February 1, 2001. This test was conducted in two parts; the loop seal was commissioned during the first part of this test run from December 1 through 15, which consisted of hot inert solids circulation testing. These initial tests provided preliminary data necessary to understand different parameters associated with the operation and performance of the loop seal. The loop seal was tested with coal feed during the second part of the test run and additional data was gathered to analyze reactor operations and to identify necessary modifications to improve equipment and process performance. In the second part of GCT3, the gasification portion of the test, from January 20 to February 1, 2001, the mixing zone and riser temperatures were varied between 1,675 and 1,825 F at pressures ranging from 200 to 240 psig. There were 306 hours of solid circulation and 184 hours of coal feed attained in GCT3.

  17. Energy Implications of Residential Particle Control Technologies Jeffrey A. Siegel1,*

    E-Print Network [OSTI]

    Siegel, Jeffrey

    heating and cooling systems with a MERV 11 filter, followed by a rangehood ventilation fan, with central

  18. Programming Wireless Sensor Networks with Logical Neighborhoods: A Road Tunnel Use Case

    E-Print Network [OSTI]

    Picco, Gian Pietro

    on sensed data, the system operates a variety of devices, such as ventilation fans inside the tunnel

  19. Best Environmental Management Practices

    E-Print Network [OSTI]

    of circulation fans in pits of high-rise laying houses, ventilation systems that promote proper dunging patterns

  20. Seismic mapping of alluvial fans and sub-fan bedrock in Big Bend National Park, Texas

    E-Print Network [OSTI]

    Monti, Joseph

    1984-01-01T23:59:59.000Z

    been possible without the funding and support provided by the National Park Service under project numbers CX-702900029 and CX-702910016. My sincere gratitude goes to Garland Moore, who supplied the well data collected by the U. S. Geological Survey.... The author would like to express his appreciation to Dr. J. Michael Brown for his discussions concerning geophy- sical interpretations and computer programs. His patience and advice contributed to the success of this thesis. This project would not have...

  1. Record of Communication Concerning Ceiling Fan and Ceiling Fan Light Kit

    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 1112011 Strategic2 OPAM615_CostNSAR - TProcuringDepartmentDepartment

  2. Systems and methods for autonomously controlling agricultural machinery

    DOE Patents [OSTI]

    Hoskinson, Reed L.; Bingham, Dennis N.; Svoboda, John M.; Hess, J. Richard

    2003-07-08T23:59:59.000Z

    Systems and methods for autonomously controlling agricultural machinery such as a grain combine. The operation components of a combine that function to harvest the grain have characteristics that are measured by sensors. For example, the combine speed, the fan speed, and the like can be measured. An important sensor is the grain loss sensor, which may be used to quantify the amount of grain expelled out of the combine. The grain loss sensor utilizes the fluorescence properties of the grain kernels and the plant residue to identify when the expelled plant material contains grain kernels. The sensor data, in combination with historical and current data stored in a database, is used to identify optimum operating conditions that will result in increased crop yield. After the optimum operating conditions are identified, an on-board computer can generate control signals that will adjust the operation of the components identified in the optimum operating conditions. The changes result in less grain loss and improved grain yield. Also, because new data is continually generated by the sensor, the system has the ability to continually learn such that the efficiency of the agricultural machinery is continually improved.

  3. Advanced Building Efficiency Testbed Initiative/Intelligent Workplace Energy Supply System; ABETI/IWESS

    SciTech Connect (OSTI)

    David Archer; Frederik Betz; Yun Gu; Rong Li; Flore Marion; Sophie Masson; Ming Qu; Viraj Srivastava; Hongxi Yin; Chaoqin Zhai; Rui Zhang; Elisabeth Aslanian; Berangere Lartigue

    2008-05-31T23:59:59.000Z

    ABETI/IWESS is a project carried out by Carnegie Mellon's Center for Building Performance and Diagnostics, the CBPD, supported by the U.S. Department of Energy/EERE, to design, procure, install, operate, and evaluate an energy supply system, an ESS, that will provide power, cooling, heating and ventilation for CBPD's Intelligent Workplace, the IW. The energy sources for this system, the IWESS, are solar radiation and bioDiesel fuel. The components of this overall system are: (1) a solar driven cooling and heating system for the IW comprising solar receivers, an absorption chiller, heat recovery exchanger, and circulation pump; (2) a bioDiesel fueled engine generator with heat recovery exchangers, one on the exhaust to provide steam and the other on the engine coolant to provide heated water; (3) a ventilation system including an enthalpy recovery wheel, an air based heat pump, an active desiccant wheel, and an air circulation fan; and (4) various convective and radiant cooling/heating units and ventilation air diffusers distributed throughout the IW. The goal of the ABETI/IWESS project is to demonstrate an energy supply system for a building space that will provide a healthy, comfortable environment for the occupants and that will reduce the quantity of energy consumed in the operation of a building space by a factor of 2 less than that of a conventional energy supply for power, cooling, heating, and ventilation based on utility power and natural gas fuel for heating.

  4. Name of TMO ODSS1 ODSS2

    E-Print Network [OSTI]

    Joo, Su-Chong

    Heating System Camera Window & Curtain LightFan Air Conditioner , , #12;Platform : Intel X86 /W indows XP /Windows 2000 Server CPU : Pentium 4-700MhzHome Server TMO Air Conditioner TMO Heater TMO Heater TMO Fan

  5. Library System Library System

    E-Print Network [OSTI]

    Cinabro, David

    Library System #12;Library System 5150 Anthony Wayne Drive David Adamany Undergraduate Library that for the current fiscal year, we've been given an additional $600,000 for our library materials budget. We're very subscriptions. The Wayne State University Libraries are deeply committed to providing our faculty and students

  6. Industrial Applications of Networked Control Karl H. Johansson

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    of turbine + heater Automatic control of ventilation fans · Mining consists of drilling, blasting, ore control of turbine + heater Controller Turbine- Ventilation Fan Tubes- Primary system Secondary system network rooms Pressure WSN Mobile WSN Automatic control of ventilation fans · Mobility and reconfiguration

  7. Temperature-Aware Operating System Scheduling

    E-Print Network [OSTI]

    Skadron, Kevin

    at temperatures almost high enough to cause themselves irreparable damage. Of the various cooling techniques THROTTLING Processor cooling techniques are grouped into the two general categories: active and passive. Active cooling techniques, such as fans, use power and generally cause noise. Passive cooling techniques

  8. 1 MW SYSTEM Klystron Block Diagram

    E-Print Network [OSTI]

    amplification · Focusing magnet power supplies · Vacuum pump controllers · Filament power supplies · Cooling for Klystron #12;Water Cooling #12;Transmitter Control Rack #12;HV Tank #12;HV Power Supply · Both designs have water monitoring · Cooling air fans and monitoring Provides Monitoring and Support Functions

  9. Gasification Systems

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

    SYSTEMS Gasi cation Systems Advanced Combustion Systems Advanced Turbines Solid Oxide Fuel Cells Plant Optimization Coal Utilization Sciences University Training and Research...

  10. A computer simulation appraisal of non-residential low energy cooling systems in California

    SciTech Connect (OSTI)

    Bourassa, Norman; Haves, Philip; Huang, Joe

    2002-05-17T23:59:59.000Z

    An appraisal of the potential performance of different Low Energy Cooling (LEC) systems in nonresidential buildings in California is being conducted using computer simulation. The paper presents results from the first phase of the study, which addressed the systems that can be modeled, with the DOE-2.1E simulation program. The following LEC technologies were simulated as variants of a conventional variable-air-volume system with vapor compression cooling and mixing ventilation in the occupied spaces: Air-side indirect and indirect/direct evaporative pre-cooling. Cool beams. Displacement ventilation. Results are presented for four populous climates, represented by Oakland, Sacramento, Pasadena and San Diego. The greatest energy savings are obtained from a combination of displacement ventilation and air-side indirect/direct evaporative pre-cooling. Cool beam systems have the lowest peak demand but do not reduce energy consumption significantly because the reduction in fan energy is offse t by a reduction in air-side free cooling. Overall, the results indicate significant opportunities for LEC technologies to reduce energy consumption and demand in nonresidential new construction and retrofit.

  11. Hypergeometric systems II: GKZ systems

    E-Print Network [OSTI]

    Uli Walther

    2010-09-27T23:59:59.000Z

    Solutions of A-hypergemetric systems. Hypergeometric systems II: GKZ systems ... Power series ansatz: z = ?. ? k=0 aktk shows ak ? vj >0 vj ?1. ? l=0.

  12. Solar heating, cooling, and domestic hot water system installed at Kaw Valley State Bank and Trust Company, Topeka, Kansas. Final report

    SciTech Connect (OSTI)

    None

    1980-11-01T23:59:59.000Z

    The building has approximately 5600 square feet of conditioned space. Solar energy is used for space heating, space cooling, and preheating domestic hot water (DHW). The solar energy system has an array of evacuated tube-type collectors with an area of 1068 square feet. A 50/50 solution of ethylene glycol and water is the transfer medium that delivers solar energy to a tube-in-shell heat exchanger that in turn delivers solar-heated water to a 1100 gallon pressurized hot water storage tank. When solar energy is insufficient to satisfy the space heating and/or cooling demand, a natural gas-fired boiler provides auxiliary energy to the fan coil loops and/or the absorption chillers. Extracts from the site files, specification references, drawings, and installation, operation and maintenance instructions are included.

  13. EECBG Success Story: Energy Savings, Improved Comfort for West...

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

    HVAC system. | Photo courtesy of Deborah Hammond The Dunn Building in Martinsburg, West Virginia replaced its HVAC system with a new chiller system fan coil units and...

  14. E-print Network Topics: F

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

    issues famus flow assurance fan achtkarspelen op fan atomized burner fan atomized oil fan belts fan blade design fan case materials fan channel networks fan chun-han ko fan...

  15. Potential for Hepa filter damage from water spray systems in filter plenums

    SciTech Connect (OSTI)

    Bergman, W.; Fretthold, J.K.; Slawsld, J.W.

    1997-01-01T23:59:59.000Z

    The water spray systems in high efficiency particulate air (HEPA) filter plenums that are used in nearly all Department of Energy (DOE) facilities for protection against fire was designed under the assumption that the HEPA filters would not be damaged by the water sprays. The most likely scenario for filter damage involves filter plugging by the water spray, followed by the fan blowing out the filter medium. A number of controlled laboratory tests that were previously conducted in the late 1980s are reviewed in this paper to provide a technical basis for the potential HEPA filter damage by the water spray system in HEPA filter plenums. In addition to the laboratory tests, the scenario for HEPA filter damage during fires has also occurred in the field. Afire in a four-stage, HEPA filter plenum at Rocky Flats in 1980 caused the first three stages of HEPA filters to blow out of their housing and the fourth stage to severely bow. Details of this recently declassified fire are presented in this paper. Although these previous findings suggest serious potential problems exist with the current water spray system in filter plenum , additional studies are required to confirm unequivocally that DOE`s critical facilities are at risk.

  16. Performance Evaluation for Modular, Scalable Liquid-Rack Cooling Systems in Data Centers

    E-Print Network [OSTI]

    Xu, TengFang

    2009-01-01T23:59:59.000Z

    cooling higher-density servers in today’s and future dataand future generations of servers has created significant opportunities for precision coolingfuture generations of the product, allowing significant fan energy savings even at its partial load cooling.

  17. Methodology to Analyze the Sensitivity of Building Energy Consumption to HVAC System Sensor Error

    E-Print Network [OSTI]

    Ma, Liang

    2012-02-14T23:59:59.000Z

    parameters. There are a total of eight scenarios considered in this simulation. The simulation tool was developed based on Excel. The control parameters examined include room temperature, cold deck temperature, hot deck temperature, pump pressure, and fan...

  18. Performance Evaluation for Modular, Scalable Overhead Cooling Systems In Data Centers

    E-Print Network [OSTI]

    Xu, TengFang T.

    2009-01-01T23:59:59.000Z

    single fan running under partial load. 3.2 Servers The IT orthe desired full or partial power load per rack during eachthe desired partial or full power load level (kW/rack) to be

  19. INTERACTION OF A SOLAR SPACE HEATING SYSTEM WITH THE THERMAL BEHAVIOR OF A BUILDING

    E-Print Network [OSTI]

    Vilmer, Christian

    2013-01-01T23:59:59.000Z

    P(t) UAB time constant. Heat input power from a fan coil orof a building in response to heat input from an active solarS.R. of a building under heat input conditions for active

  20. Dynamic molecular imaging of cardiac innervation using a dual head pinhole SPECT system

    E-Print Network [OSTI]

    Hu, Jicun; Boutchko, Rostyslav; Sitek, Arkadiusz; Reutter, Bryan W.; Huesman, Ronald H.; Gullberg, Grant T.

    2008-01-01T23:59:59.000Z

    Crawford CR, Gullberg GT, Tsui BMW: Reconstruction for fan281, 1984. Gullberg GT, Tsui BMW, Crawford C, Edgerton E:YC, Patt BE, Iwanczyk JS, Tsui BMW, Hoffman EJ: Performance

  1. Particle seeding flow system for horizontal shock tube

    SciTech Connect (OSTI)

    Johnston, Stephen [Los Alamos National Laboratory; Garcia, Nicolas J. [Los Alamos National Laboratory; Martinez, Adam A. [Los Alamos National Laboratory; Orlicz, Gregory C. [Los Alamos National Laboratory; Prestridge, Katherine P. [Los Alamos National Laboratory

    2012-08-01T23:59:59.000Z

    The Extreme Fluids Team in P-23, Physics Division, studies fluid dynamics at high speeds using high resolution diagnostics. The unsteady forces on a particle driven by a shock wave are not well understood, and they are difficult to model. A horizontal shock tube (HST) is being modified to collect data about the behavior of particles accelerated by shocks. The HST has been used previously for studies of Richtmyer-Meshkov instability using Planar Laser-Induced Fluorescence (PLIF) as well as Particle Image Velocimetry (PIV), diagnostics that measure density and velocity. The purpose of our project is to design a flow system that will introduce particles into the HST. The requirements for this particle flow system (PFS) are that it be non-intrusive, be able to introduce either solid or liquid particles, have an exhaust capability, not interfere with existing diagnostics, and couple with the existing HST components. In addition, the particles must flow through the tube in a uniform way. We met these design criteria by first drawing the existing shock tube and diagnostics and doing an initial design of the ducts for the PFS. We then estimated the losses through the particle flow system from friction and researched possible fans that could be used to drive the particles. Finally, the most challenging component of the design was the coupling to the HST. If we used large inlets, the shock would lose strength as it passed by the inlet, so we designed a novel coupling inlet and outlet that minimize the losses to the shock wave. Our design was reviewed by the Extreme Fluids Team, and it is now being manufactured and built based upon our technical drawings.

  2. Modelica-based Modeling and Simulation to Support Research and Development in Building Energy and Control Systems

    SciTech Connect (OSTI)

    Wetter, Michael

    2009-02-12T23:59:59.000Z

    Traditional building simulation programs possess attributes that make them difficult to use for the design and analysis of building energy and control systems and for the support of model-based research and development of systems that may not already be implemented in these programs. This article presents characteristic features of such applications, and it shows how equation-based object-oriented modelling can meet requirements that arise in such applications. Next, the implementation of an open-source component model library for building energy systems is presented. The library has been developed using the equation-based object-oriented Modelica modelling language. Technical challenges of modelling and simulating such systems are discussed. Research needs are presented to make this technology accessible to user groups that have more stringent requirements with respect to the numerical robustness of simulation than a research community may have. Two examples are presented in which models from the here described library were used. The first example describes the design of a controller for a nonlinear model of a heating coil using model reduction and frequency domain analysis. The second example describes the tuning of control parameters for a static pressure reset controller of a variable air volume flow system. The tuning has been done by solving a non-convex optimization problem that minimizes fan energy subject to state constraints.

  3. Computer System,

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

    undergraduate summer institute http:institutes.lanl.govistisummer-school 2015 Computer System, Cluster, and Networking Summer Institute Purpose The Computer System,...

  4. Design and experimental testing of the performance of an outdoor LiBr/H{sub 2}O solar thermal absorption cooling system with a cold store

    SciTech Connect (OSTI)

    Agyenim, Francis; Knight, Ian; Rhodes, Michael [The Welsh School of Architecture, Bute Building, King Edward VII Avenue, Cardiff University, Cardiff, CF10 3NB Wales (United Kingdom)

    2010-05-15T23:59:59.000Z

    A domestic-scale prototype experimental solar cooling system has been developed based on a LiBr/H{sub 2}O absorption system and tested during the 2007 summer and autumn months in Cardiff University, UK. The system consisted of a 12 m{sup 2} vacuum tube solar collector, a 4.5 kW LiBr/H{sub 2}O absorption chiller, a 1000 l cold storage tank and a 6 kW fan coil. The system performance, as well as the performances of the individual components in the system, were evaluated based on the physical measurements of the daily solar radiation, ambient temperature, inlet and outlet fluid temperatures, mass flow rates and electrical consumption by component. The average coefficient of thermal performance (COP) of the system was 0.58, based on the thermal cooling power output per unit of available thermal solar energy from the 12 m{sup 2} Thermomax DF100 vacuum tube collector on a hot sunny day with average peak insolation of 800 W/m{sup 2} (between 11 and 13.30 h) and ambient temperature of 24 C. The system produced an electrical COP of 3.6. Experimental results prove the feasibility of the new concept of cold store at this scale, with chilled water temperatures as low as 7.4 C, demonstrating its potential use in cooling domestic scale buildings. (author)

  5. Microfluidic Systems Integrated Microfluidic Systems**

    E-Print Network [OSTI]

    Ismagilov, Rustem F.

    Microfluidic Systems Integrated Microfluidic Systems** Rustem F. Ismagilov* Keywords: analytical methods · enzymes · microfluidics · microreactors · protein structures Microfluidic systems use networks of channels thinner than a human hair to manipulate nanoliter volumes of re- agents. The goal of microfluidics

  6. Model-based benchmarking with application to laboratory buildings

    E-Print Network [OSTI]

    Federspiel, Clifford Ph.D.; Zhang, Qiang; Arens, Edward Ph.D

    2002-01-01T23:59:59.000Z

    hydraulic elevators more than buildings with counterweighted elevators. Efficient air distribution VAV laboratories will use considerably less energy

  7. Tomographic imaging system for measuring impurity line emission in a field-reversed configuration

    SciTech Connect (OSTI)

    Roche, T.; Heidbrink, W. W.; McWilliams, R. [University of California, Irvine, California 92697 (United States); Bolte, N.; Garate, E.; Wessel, F. [University of California, Irvine, California 92697 (United States); Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States)

    2012-10-15T23:59:59.000Z

    A 16 chord optical tomography system has been developed and implemented in the flux coil generated-field reversed configuration (FRC). The chords are arranged in two fans of eight, which cover {approx}35% of the vessel area at the midplane. Each illuminate separate photomultiplier tubes (PMTs) which are fitted with narrow band-pass filters. In this case, filters are centered at 434.8 nm to measure emission from singly ionized argon. PMT crosstalk is negligible. Background noise due to electron radiation and H{sub {gamma}} line radiation is <10% of argon emission. The spatial resolution of the reconstruction is 1.5 cm. Argon is introduced using a puff valve and tube designed to impart the gas into the system as the FRC is forming. Reconstruction of experimental data results in time-dependent, 2D emissivity profiles of the impurity ions. Analysis of these data show radial, cross-field diffusion to be in the range of 10-10{sup 3} m{sup 2}/s during FRC equilibrium.

  8. Decommissioning of Active Ventilation Systems in a Nuclear R and D Facility to Prepare for Building Demolition (Whiteshell Laboratories Decommissioning Project, Canada) - 13073

    SciTech Connect (OSTI)

    Wilcox, Brian; May, Doug; Howlett, Don; Bilinsky, Dennis [Atomic Energy of Canada Limited, Ara Mooradian Way, Pinawa, Manitoba (Canada)] [Atomic Energy of Canada Limited, Ara Mooradian Way, Pinawa, Manitoba (Canada)

    2013-07-01T23:59:59.000Z

    Whiteshell Laboratories (WL) is a nuclear research establishment owned by the Canadian government and operated by Atomic Energy of Canada Limited (AECL) since the early 1960's. WL is currently under a decommissioning license and the mandate is to remediate the nuclear legacy liabilities in a safe and cost effective manner. The WL Project is the first major nuclear decommissioning project in Canada. A major initiative underway is to decommission and demolish the main R and D Laboratory complex. The Building 300 R and D complex was constructed to accommodate laboratories and offices which were mainly used for research and development associated with organic-cooled reactors, nuclear fuel waste management, reactor safety, advanced fuel cycles and other applications of nuclear energy. Building 300 is a three storey structure of approximately 16,000 m{sup 2}. In order to proceed with building demolition, the contaminated systems inside the building have to be characterized, removed, and the waste managed. There is a significant focus on volume reduction of radioactive waste for the WL project. The active ventilation system is one of the significant contaminated systems in Building 300 that requires decommissioning and removal. The active ventilation system was designed to manage hazardous fumes and radioactivity from ventilation devices (e.g., fume hoods, snorkels and glove boxes) and to prevent the escape of airborne hazardous material outside of the laboratory boundary in the event of an upset condition. The system includes over 200 ventilation devices and 32 active exhaust fan units and high efficiency particulate air (HEPA) filters. The strategy to remove the ventilation system was to work from the laboratory end back to the fan/filter system. Each ventilation duct was radiologically characterized. Fogging was used to minimize loose contamination. Sections of the duct were removed by various cutting methods and bagged for temporary storage prior to disposition. Maintenance of building heating, ventilation and air conditioning (HVAC) balancing was critical to ensure proper airflow and worker safety. Approximately 103 m{sup 3} of equipment and materials were recovered or generated by the project. Low level waste accounted for approximately 37.4 m{sup 3}. Where possible, ducting was free released for metal recycling. Contaminated ducts were compacted into B-1000 containers and stored in a Shielded Modular Above-Ground Storage Facility (SMAGS) on the WL site awaiting final disposition. The project is divided into three significant phases, with Phases 1 and 2 completed. Lessons learned during the execution of Phases 1 and 2 have been incorporated into the current ventilation removal. (authors)

  9. Screening system and method of using same

    DOE Patents [OSTI]

    Jones, David A; Gresham, Christopher A; Basiliere, Marc L; Spates, James J; Rodacy, Philip J

    2014-04-15T23:59:59.000Z

    An integrated apparatus and method for screening an object for a target material is provided. The integrated apparatus comprises a housing and an integrated screener. The housing is positionable adjacent the object, and has a channel therethrough. The integrated screener is positionable in the housing, and comprises a fan, at least one filter, a heater and an analyzer. The fan is for drawing air carrying particles and vapor through the channel of the housing. The filter(s) is/are positionable in the channel of the housing for passage of the air therethrough. The filter(s) comprise(s) at least one metal foam having a plurality of pores therein for collecting and adsorbing a sample from the particles and vapor passing therethrough. The heater is for applying heat to the at least one metal foam whereby the collected sample is desorbed from the metal foam. The analyzer detects the target material from the desorbed sample.

  10. AN ELECTROMAGNETIC PNEUMO CAPSULE SYSTEM FOR CONVEYING MINERALS AND MINE WASTES

    SciTech Connect (OSTI)

    Henry Liu; Charles W. Lenau

    2005-03-01T23:59:59.000Z

    The purpose of this project is to investigate the technical and economic feasibility of using a new and advanced pneumatic capsule pipeline (PCP) system for transporting minerals and mine wastes. The new system is different from conventional PCPs in two main respects: (1) it uses linear induction motors (LIMs) instead of blowers (fans) at the inlet of the pipeline to drive (pump) the capsules and the air through the pipeline; and (2) the capsules in the PCP have steel wheels running on steel rails as opposed to capsules in conventional systems, which use wheels with rubber tires running inside a pipe without rail. The advantage of using LIM pump instead of blower is that the former is non-intrusive and hence does not block the passage of capsules, enabling the system to run continuously without having to make the capsules bypass the pump. This not only simplifies the system but also enables the system to achieve much larger cargo throughput than that of PCPs using blowers, and use of LIMs as booster pumps which enables the system to have any length or to be used for transporting cargoes over practically any distance, say even one thousand kilometers or miles. An advantage of using steel wheels rolling on steel rails instead of using rubber tires rolling inside a pipeline is that the rolling friction coefficient and hence the use of energy is greatly reduced from that of conventional PCP systems. Moreover, rails enable easy control of capsule motion, such as switching capsules to a branch line by using railroad switching equipment. The advanced PCP system studied under this project uses rectangular conduits instead of circular pipe, having cross-sectional areas of 1 m by 1 m approximately. The system can be used for various transportation distances, and it can transport up to 50 million tonnes (metric tons) of cargo annually--the throughput of the largest mines in the world. Both an aboveground and an underground system were investigated and compared. The technical feasibility of this new PCP system was determined by designing the details of the system and conducting a detail analysis of the system--both steady and unsteady analyses. Through the detailed design and analyses, it was found that no technical problem or hurdle exist that would otherwise prevent commercial use of the system today. Still, since it is a new technology, it will be prudent and advantageous to run a demonstration project before this technology is used.

  11. System Effectiveness

    SciTech Connect (OSTI)

    Powell, Danny H [ORNL] [ORNL; Elwood Jr, Robert H [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    An effective risk assessment system is needed to address the threat posed by an active or passive insider who, acting alone or in collusion, could attempt diversion or theft of nuclear material. It is critical that a nuclear facility conduct a thorough self-assessment of the material protection, control, and accountability (MPC&A) system to evaluate system effectiveness. Self-assessment involves vulnerability analysis and performance testing of the MPC&A system. The process should lead to confirmation that mitigating features of the system effectively minimize the threat, or it could lead to the conclusion that system improvements or upgrades are necessary to achieve acceptable protection against the threat. Analysis of the MPC&A system is necessary to understand the limits and vulnerabilities of the system to internal threats. Self-assessment helps the facility be prepared to respond to internal threats and reduce the risk of theft or diversion of nuclear material. MSET is a self-assessment or inspection tool utilizing probabilistic risk assessment (PRA) methodology to calculate the system effectiveness of a nuclear facility's MPC&A system. MSET analyzes the effectiveness of an MPC&A system based on defined performance metrics for MPC&A functions based on U.S. and international best practices and regulations. A facility's MC&A system can be evaluated at a point in time and reevaluated after upgrades are implemented or after other system changes occur. The total system or specific subareas within the system can be evaluated. Areas of potential performance improvement or system upgrade can be assessed to determine where the most beneficial and cost-effective improvements should be made. Analyses of risk importance factors show that sustainability is essential for optimal performance. The analyses reveal where performance degradation has the greatest detrimental impact on total system risk and where performance improvements have the greatest reduction in system risk. The risk importance factors show the amount of risk reduction achievable with potential upgrades and the amount of risk reduction actually achieved after upgrades are completed. Applying the risk assessment tool gives support to budget prioritization by showing where budget support levels must be sustained for MC&A functions most important to risk. Results of the risk assessment are also useful in supporting funding justifications for system improvements that significantly reduce system risk.

  12. Plant Maintenance and Improvement Experiences for Control System in UCN 5 and 6

    SciTech Connect (OSTI)

    Choi, D.R.; Lee, K.B.; Kim, C.J.; Chung, Y.M. [Korea Hydro and Nuclear Power Co., Ltd., no. 84-1, Bugu-ri, Buk-Myeon, Ulchin-gun, Kyong-buk (Korea, Republic of)

    2006-07-01T23:59:59.000Z

    The Plant Control System (PCS) in Korean Standard Nuclear Power Plant (KSNP) is designed to perform data acquisition and transfer function via communication data links to control most of the field components such as pumps, fans, valves, dampers and circuit breakers. The PCS installed at UCN 5 and 6 for both safety related and non -safety related functions is microprocessor based system supplied by HF Controls. Safety related functions are provided by redundant trains of microprocessor based single loop controllers with direct connections to the field input/output instruments but non-safety related functions utilize a similar construction with the input/output boards to be remotely located in cabinet arrangements near the field components. Whatever the functions, the signals to control and monitor field devices are processed through communication master (CM), HFC distributed control system, which uses Multibus I back-plane design to accommodate the requirement of multiple processors. The complex programmable logic device (CPLD) mounted on the A233 back-plane of the CM controls the processors for an adequate access to the bus so that 16 microprocessor based circuitries acting as bus masters share the public memory properly through the common bus. The bus occupation of each processor should not affect overall system response time to keep appropriate system performance. This paper discusses the comparison evaluation between the difference priority techniques and hardware change on A233 back-plane to improve the communication methods, etc., as to the bus arbitration schemes of communication master(CM) applied to UCN site based on the waveform data acquired from A233 CPLD and HFC bus design specification. (authors)

  13. The Gas-Cooled Fast Reactor: Report on Safety System Design for Decay Heat Removal

    SciTech Connect (OSTI)

    K. D. Weaver; T. Marshall; T. Y. C. Wei; E. E. Feldman; M. J. Driscoll; H. Ludewig

    2003-09-01T23:59:59.000Z

    The gas-cooled fast reactor (GFR) was chosen as one of the Generation IV nuclear reactor systems to be developed based on its excellent potential for sustainability through reduction of the volume and radiotoxicity of both its own fuel and other spent nuclear fuel, and for extending/utilizing uranium resources orders of magnitude beyond what the current open fuel cycle can realize. In addition, energy conversion at high thermal efficiency is possible with the current designs being considered, thus increasing the economic benefit of the GFR. However, research and development challenges include the ability to use passive decay heat removal systems during accident conditions, survivability of fuels and in-core materials under extreme temperatures and radiation, and economical and efficient fuel cycle processes. This report addresses/discusses the decay heat removal options available to the GFR, and the current solutions. While it is possible to design a GFR with complete passive safety (i.e., reliance solely on conductive and radiative heat transfer for decay heat removal), it has been shown that the low power density results in unacceptable fuel cycle costs for the GFR. However, increasing power density results in higher decay heat rates, and the attendant temperature increase in the fuel and core. Use of active movers, or blowers/fans, is possible during accident conditions, which only requires 3% of nominal flow to remove the decay heat. Unfortunately, this requires reliance on active systems. In order to incorporate passive systems, innovative designs have been studied, and a mix of passive and active systems appears to meet the requirements for decay heat removal during accident conditions.

  14. WINTER-SPRING 2009 SCHEDULE Workshops to Improve Productivity by

    E-Print Network [OSTI]

    and create a baseline of system performance, and determine the impact of different compressor control types: determine system efficiency, identify degraded fans, collect data for trending system operation://www.eere.energy.gov/industry/bestpractices/fan_systems.html Motor Systems Management Motor Systems Management training is designed to help facility personnel reduce

  15. Coal-fired high performance power generating system. Quarterly progress report, October 1--December 31, 1992

    SciTech Connect (OSTI)

    Not Available

    1992-12-31T23:59:59.000Z

    Our team has outlined a research plan based on an optimized analysis of a 250 MWe combined cycle system applicable to both frame type and aeroderivative gas turbines. Under the constraints of the cycle analysis we have designed a high temperature advanced furnace (FUTAF) which integrates several combustor and air heater designs with appropriate ash management procedures. The Cycle Optimization effort under Task 2 outlines the evolution of our designs. The basic combined cycle approach now includes exhaust gas recirculation to quench the flue gas before it enters the convective air heater. By selecting the quench gas from a downstream location it will be clean enough and cool enough (ca. 300F) to be driven by a commercially available fan and still minimize the volume of the convective air heater. Further modeling studies on the long axial flame, under Task 3, have demonstrated that this configuration is capable of providing the necessary energy flux to the radiant air panels. This flame with its controlled mixing constrains the combustion to take place in a fuel rich environment, thus minimizing the NO{sub x} production. Recent calculations indicate that the NO{sub x} produced is low enough that the SNCR section can further reduce it to within the DOE goal of 0. 15 lbs/MBTU of fuel input. Also under Task 3 the air heater design optimization continued.

  16. INFORMATION SYSTEMS

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

    SYSTEMS Providing an efficient, seamless virtual work environment To accelerate progress toward mission goals, our business and operations processes will be aggressively...

  17. Experimental Evaluation of Installed Cooking Exhaust Fan Performance

    E-Print Network [OSTI]

    Singer, Brett C.

    2011-01-01T23:59:59.000Z

    of  existing  natural  gas  combustion  equipment.  of  end-­??use  natural-­??gas  combustion   equipment.  natural  gas  in  California,  the  California  Energy   Commission  requested  research  to  assess  the  potential  impacts  on  combustion  

  18. alluvial fans cyprus: Topics by E-print Network

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

    be walking up to 20km a daynight in temperatures of 30-40 C. Medical be required to fill out a medical questionnaire. This information is confidential and in no way affects...

  19. alluvial fan deposits: Topics by E-print Network

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

    P. 2006-06-21 47 unknown title CiteSeer Summary: Artificial fill (Recent)Deposits of fill resulting from human construction or mining activities; most large deposits mapped,...

  20. Cooling Tower Energy Conservation Through Hydraulic Fan Drives

    E-Print Network [OSTI]

    Dickerson, J.

    conservation or "Return on Investment" was emphasized, the only alternative was to add an expensive frequency inverter for variable speed control. This meant expensive rewiring, placing additional controls in an already crowded control room, or constructing a...

  1. Demonstration of Intelligent Control and Fan Improvements in Computer Room

    E-Print Network [OSTI]

    Secretary for Energy Efficiency and Renewable Energy, Building Technologies Program, of the U.S. Department of the energy efficiency improvement projects associated with the facility studied in this demonstration Services for his support with supplying historical information related to the data center site used

  2. Measured Natural Cooling Enhancement of a While House Fan

    E-Print Network [OSTI]

    Parker, D. S.

    1994-01-01T23:59:59.000Z

    of the existing housing stock in Florida: a concrete block structure with R-11 ceiling insulation. The building was ventilated with all windows open during the three month summer test period (June- August). Air temperatures and relative humidity inside the home...

  3. Chapter 2. Physical Environment (Yalin Fan & Wendell Brown) A. Introduction

    E-Print Network [OSTI]

    Chen, Changsheng

    an embayment that "originates" between Tiverton and Aquidneck Island and connects southern Mt. Hope Bay

  4. Cooling efficiency of a brushless direct current stand fan

    E-Print Network [OSTI]

    Yang, Bin; Schiavon, Stefano; Sekhar, Chandra; Cheong, David; Tham, Kwok Wai; Nazaroff, William W

    2014-01-01T23:59:59.000Z

    refrigeration and Air-Conditioning Engineers (ANSI/ASHRAErefrigeration and Air-Conditioning Engineers. [46] Gagge AP,than compressor-based air conditioning. To evaluate the

  5. Cooling efficiency of a brushless direct current stand fan

    E-Print Network [OSTI]

    Yang, Bin; Schiavon, Stefano; Sekhar, Chandra; Cheong, David; Tham, Kwok Wai; Nazaroff, William W

    2015-01-01T23:59:59.000Z

    refrigeration and Air-Conditioning Engineers (ANSI/ASHRAErefrigeration and Air-Conditioning Engineers. [46] Gagge AP,than compressor-based air conditioning. To evaluate the

  6. Potential Global Benefits of Improved Ceiling Fan Energy Efficiency

    E-Print Network [OSTI]

    Sathaye, Nakul

    2014-01-01T23:59:59.000Z

    Requirements for air-conditioning appliances and comfortLetschert. 2008. Future Air Conditioning Energy ConsumptionV. , 2007. Future Air Conditioning Energy Consumption in

  7. Active heat transfer enhancement in integrated fan heat sinks

    E-Print Network [OSTI]

    Staats, Wayne Lawrence

    2012-01-01T23:59:59.000Z

    Modern computer processors require significant cooling to achieve their full performance. The "efficiency" of heat sinks is also becoming more important: cooling of electronics consumes 1% of worldwide electricity use by ...

  8. Potential Global Benefits of Improved Ceiling Fan Energy Efficiency

    E-Print Network [OSTI]

    Sathaye, Nakul

    2014-01-01T23:59:59.000Z

    decentralized rural electrification: An overview. Renewablepublic solar PV electrification on rural micro- enterprises:

  9. Visualizing set concordance with permutation matrices and fan diagrams

    E-Print Network [OSTI]

    Hunt, Galen

    Lee b , Jinwook Seo c,* a Seoul National University Bundang Hospital, 300 Gumi-dong, Bundand) to acquire numerical values from microarrays, which represent gene activities (Seo et al., 2006). Subsequent), bongshin@ microsoft.com (B. Lee), jseo@cnmcresearch.org (J. Seo). www

  10. Analysis of guided resonances in photonic crystal slabs Shanhui Fan

    E-Print Network [OSTI]

    Fan, Shanhui

    the dispersion dia- grams and the eigenfield distributions of these resonances with a plane-wave band

  11. Experimental Evaluation of Installed Cooking Exhaust Fan Performance

    E-Print Network [OSTI]

    Singer, Brett C.

    2011-01-01T23:59:59.000Z

    liquefied   natural  gas  (LNG)  from  Pacific  Rim  potential   impacts  of  using  LNG  with  the  existing  performance  impacts  of  LNG  use  in  California.  

  12. New Energy Efficiency Standards for Furnace Fans to Reduce Carbon...

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

    Climate Action Plan was announced last year. These efficiency standards cut carbon pollution and save American families and businesses money by saving energy. The new standard...

  13. Improvement of efficiency in a low volume fan

    E-Print Network [OSTI]

    Lipscomb, Jeffrey William

    1974-01-01T23:59:59.000Z

    hp ft /min 3 ft lbf f t*lb lbf sec 2 Meff N mechanical efficiency revolutions per minute RPM Sp Steff V radius static pressure static efficiency torque total corrected pressure blade speed absolute velocity relative velocity in. H..." AO ( WTFSXIFD SThh! I 2) =' F6 ~ 2 ' I I (WTTSHFP ) =' C5, 3 )=I. C6. 2 ~ I Ih! ~ WhTFRI RX W!ITCP I ) HP ~ ~ 41X ~ I PnWCP { STARLIT 7) l!T [I A T I( I ) Teh +IHPI&APDiDHO I'=tr'I 6 ) I'=L'I F8 ~ Oi ~ 7 I PIIPPI Fet 4 ~ RHn e10) I...

  14. Polycyclic aromatic hydrocarbon distributions in Mississippi Fan sediments 

    E-Print Network [OSTI]

    Sandberg, William Allan

    1986-01-01T23:59:59.000Z

    on fractionation of carbon in phytoplankton; 3) the alteration of organic matter's isotopic composition during degradation and diagenesis; 4) upward and/or lateral migration of petrogenic hydrocarbons into shallower sediments; 5) anomalous isotopic compositions... ? acenaphthene fluorene phenanthrene/anthracene Gr-3 rings fluoranthene, pyr'ene benz(a)anthracene, chrysene benzopyrenes, perylene ?drz-perylene dibenzanthracenes (*internal standards) Gas GhromatograIrhv Injector: 300 C, splitless mode Total Run...

  15. Cooling efficiency of a brushless direct current stand fan

    E-Print Network [OSTI]

    Yang, Bin; Schiavon, Stefano; Sekhar, Chandra; Cheong, David; Tham, Kwok Wai; Nazaroff, William W

    2015-01-01T23:59:59.000Z

    a tropical analysis. Energy Build 1995; 23: 63-70. [8] Aynsley R. Saving energy with indoor air movement. Int JSchiavon S, Melikov AK. Energy saving and improved comfort

  16. ASRAC Fans and Blower Working Group Creation Notice of Intent

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

    consensus on the 7 terms of a proposed rule. Representation on the advisory committee or working group may be direct; that is, each member may represent a specific interest, or...

  17. NF-?B Fans the Flames of Lung Carcinogenesis

    E-Print Network [OSTI]

    Jacks, Tyler E.

    This perspective on Deng et al. (beginning on p. 424 in this issue of the journal) examines the link between NF-?B and lung tumorigenesis. Experiments in genetically engineered mouse models of lung cancers are elucidating ...

  18. Variable Speed Fan Retrofits for Computer Room Air Conditioners |

    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 742EnergyOn AprilA group current C3EDepartmentDepartment of Energy Photo of a vapor

  19. Potential Global Benefits of Improved Ceiling Fan Energy Efficiency

    E-Print Network [OSTI]

    Sathaye, Nakul

    2014-01-01T23:59:59.000Z

    energy savings forecasts Annual Electricity Savings (TWh) Cumulative Electricity Savings (TWh) Year Australia Brazil Canada China

  20. Mathematics and the Buckyball Fan Chung and Shlomo Sternberg

    E-Print Network [OSTI]

    Graham, Fan Chung

    is to provide a theoretical basis for the observed high temperature superconductivity of doped fullerences

  1. Cooling with a Whole House Fan | 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 platformBuildingCoalComplex(GC-72) |Reserve |Sadesh Sookraj,Improve WaterCooling

  2. Cooling with a Whole House Fan | 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 toworldPower 2010Conferencing andContacts for

  3. Healthcare Energy: Spotlight on Fans and Pumps | 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:Department of Energy Completing theWhiz!NREL partnered

  4. Hunter Fan: Proposed Penalty (2014-CE-32008) | 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:Department ofOral Testimony of SecretaryBetweenTheMarch 2,the 7 2.0

  5. ASRAC Fans and Blower Working Group Creation Notice of Intent

    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 China 2015ofDepartmentDepartment of2 of 5) ALARA TrainingANDREW ( ARI| MarchDecemberfans

  6. Comments on: Hongyou Fan Chosen for Prestigious Lecture on Creating

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced.

  7. Sandia Energy - Hongyou Fan Chosen for Prestigious Lecture on Creating

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand RequirementsCoatingsUltra-High-VoltagePower Company's (ORPC's)Nanomaterials Hongyou

  8. DOE Publishes Final Rule for Residential Furnace Fan Test Procedure |

    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"WaveInteractions and Policy (2009)| Department ofof Energy

  9. DOE Publishes Notice of Proposed Rulemaking for Residential Furnace Fans

    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"WaveInteractions and Policy (2009)| Departmentof

  10. DOE Publishes Request for Information for Ceiling Fans | Department of

    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"WaveInteractions and Policy (2009)| DepartmentofandPlanningEnergy

  11. QM Power, Inc: Commercial Refrigeration Fan Applications | Department of

    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 742EnergyOn April 23, 2014, an OHASeptember 2010In addition to analysis completedEnergy Q-Sync

  12. List of Ceiling Fan Incentives | 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 Jump to: navigation, searchOf Kilauea Volcano,LakefrontLighthouse SolarI JumpListBoilersListCeiling

  13. List of Whole House Fans Incentives | 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 Jump to: navigation, searchOf KilaueaInformation Other Alternative FuelEnergysourcesource

  14. New Energy Efficiency Standards for Furnace Fans to Reduce Carbon

    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 China 2015of 2005 attheMohammed Khan -DepartmentDepartment of EnergyFY 2014Pollution,

  15. Variable Speed Fan Retrofits for Computer Room Air Conditioners

    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 Vehicle and03/02 TUEValidation of Innovativeof Energy

  16. Variable Speed Fan Retrofits for Computer Room Air Conditioners |

    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 Vehicle and03/02 TUEValidation of Innovativeof EnergyDepartment of

  17. CNEEC - Nanophotonic Light Trapping Tutorial by Shanhui Fan

    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 for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMForms About Batteries BatteriesCAESMission Welcome to the Center

  18. QM Power, Inc: Commercial Refrigeration Fan Applications - 2015 Peer Review

    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 ContaminationHubs+ ReportEnergyProvidingPumpkinDistribution |Resiliency andQERQM|

  19. Power system

    DOE Patents [OSTI]

    Hickam, Christopher Dale (Glasford, IL)

    2008-03-18T23:59:59.000Z

    A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

  20. CALENDAR YEAR 2012 SCHEDULE Workshops to Improve Industrial Productivity by

    E-Print Network [OSTI]

    compressor control types. Learn how to achieve cost savings through more effective production and use determine system efficiency, identify degraded fans, collect data for trending system operation://www.eere.energy.gov/industry/bestpractices/fan_systems.html Motor Systems Management Motor Systems Management training is designed to help facility personnel reduce

  1. SUMMER-FALL 2009 SCHEDULE Workshops to Improve Productivity by

    E-Print Network [OSTI]

    a baseline of system performance, and determine the impact of different compressor control types. Learn how efficiency, identify degraded fans, collect data for trending system operation, and quantify potential cost://www.eere.energy.gov/industry/bestpractices/fan_systems.html Motor Systems Management Motor Systems Management training is designed to help facility personnel reduce

  2. CALENDAR YEARS 2012-3 SCHEDULE Workshops to Improve Industrial Productivity by

    E-Print Network [OSTI]

    compressor control types. Learn how to achieve cost savings through more effective production and use determine system efficiency, identify degraded fans, collect data for trending system operation://www.eere.energy.gov/industry/bestpractices/fan_systems.html Motor Systems Management Motor Systems Management training is designed to help facility personnel reduce

  3. SUMMER-FALL 2008 SCHEDULE Workshops to Improve Productivity by

    E-Print Network [OSTI]

    a baseline of system performance, and determine the impact of different compressor control types. Learn how efficiency, identify degraded fans, collect data for trending system operation, and quantify potential cost://www.eere.energy.gov/industry/bestpractices/fan_systems.html Motor Systems Management Motor Systems Management training is designed to help facility personnel reduce

  4. SUMMER-FALL 2011 SCHEDULE Workshops to Improve Industrial Productivity by

    E-Print Network [OSTI]

    compressor control types. Learn how to achieve cost savings through more effective production and use determine system efficiency, identify degraded fans, collect data for trending system operation://www.eere.energy.gov/industry/bestpractices/fan_systems.html Motor Systems Management Motor Systems Management training is designed to help facility personnel reduce

  5. Battery system

    DOE Patents [OSTI]

    Dougherty, Thomas J; Wood, Steven J; Trester, Dale B; Andrew, Michael G

    2013-08-27T23:59:59.000Z

    A battery module includes a plurality of battery cells and a system configured for passing a fluid past at least a portion of the plurality of battery cells in a parallel manner.

  6. Systems List

    E-Print Network [OSTI]

    Systems List. General Computing Servers: Hostname: bers.math.purdue.edu. Sun Microsystems Sun Fire V210 2 x 1.002 GHz UltraSPARC IIIi processors (total

  7. --No Title--

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

    to control lighting." (ix) Daylighting (sidelighting, skylights, or tubular daylight devices). "The TRACE 700 software can model daylighting." (x) Improved fan system...

  8. Microsoft Word - qs_trace-700_v6-2-4.docx

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

    to control lighting." (ix) Daylighting (sidelighting, skylights, or tubular daylight devices). "The TRACE 700 software can model daylighting." (x) Improved fan system...

  9. Tax Deduction Qualified Software: TRACE 700 version 6.3.0

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

    to control lighting." (ix) Daylighting (sidelighting, skylights, or tubular daylight devices). "The TRACE 700 software can model daylighting." (x) Improved fan system...

  10. Tax Deduction Qualified Software TRACE 700 version 6.3.0

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

    to control lighting." (ix) Daylighting (sidelighting, skylights, or tubular daylight devices). "The TRACE 700 software can model daylighting." (x) Improved fan system...

  11. 1

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

    air-cooled chillers, thermal storage systems and variable frequency drives for compressors, fans and pumps; * Energy efficient lighting for interiors, exteriors, process...

  12. Newest Los Alamos facility receives LEED® Gold certification

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

    air-cooled chillers, thermal storage systems and variable frequency drives for compressors, fans and pumps; Energy efficient lighting for interiors, exteriors, process glove...

  13. LOS ALAMOS, New Mexico, June 13, 2012-Los Alamos National Laboratory...

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

    air-cooled chillers, thermal storage systems and variable frequency drives for compressors, fans and pumps; * Energy efficient lighting for interiors, exteriors, process...

  14. 1

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

    air-cooled chillers, thermal storage systems and variable frequency drives for compressors, fans and pumps * Energy efficient lighting for interiors, exteriors, process glove...

  15. Better building: LEEDing new facilities

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

    air-cooled chillers, thermal storage systems and variable frequency drives for compressors, fans and pumps Energy efficient lighting for interiors, exteriors, process glove...

  16. DRAFT INTERIM REPORT: NATIONAL PROGRAM PLAN FOR PASSIVE AND HYBRID SOLAR HEATING AND COOLING

    E-Print Network [OSTI]

    Authors, Various

    2012-01-01T23:59:59.000Z

    concepts for space heating using remote col- lection withheating systems in terms of the fan owing matrix: DIRECT INDIRECT ISOLATED SOUTH APERTURE SHADED ROOF APERTURE ROOF APERTURE REMOTE

  17. WIPP Nitrate Salt Bearing Waste Container Isolation Plan Implementatio...

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

    north of S-1950 drift, is complete. b. Ventilation * Air Flow-The underground ventilation system is operating in filtration mode using one 860 fan that supplies a...

  18. Page 1 of 3 Radiogram No. 1679u Form 24 for 03/02/2013

    E-Print Network [OSTI]

    Subsystem Preventive Maintenance, Group E FGB 2 Fan Cleaning Inspection of Air Conditioner Inspection Inspection of Air Conditioner Inspection and Cleaning of Auxiliary Computer System () Laptops

  19. The Design of Low-Latency InterfacesThe Design of Low-Latency Interfaces for Mixed-Timing Systemsfor Mixed-Timing Systems

    E-Print Network [OSTI]

    Yang, Junfeng

    -increasing demandLow power: ever-increasing demand consumer electronicsconsumer electronics: battery-powered: battery-powered high-end processorshigh-end processors: avoid expensive fans, packaging: avoid expensive

  20. Systems Studies

    SciTech Connect (OSTI)

    Graham, R.L.

    1998-03-17T23:59:59.000Z

    The Systems Studies Activity had two objectives: (1) to investigate nontechnical barriers to the deployment of biomass production and supply systems and (2) to enhance and extend existing systems models of bioenergy supply and use. For the first objective, the Activity focused on existing bioenergy markets. Four projects were undertaken: a comparative analysis of bioenergy in Sweden and Austria; a one-day workshop on nontechnical barriers jointly supported by the Production Systems Activity; the development and testing of a framework for analyzing barriers and drivers to bioenergy markets; and surveys of wood pellet users in Sweden, Austria and the US. For the second objective, two projects were undertaken. First, the Activity worked with the Integrated BioEnergy Systems (TBS) Activity of TEA Bioenergy Task XIII to enhance the BioEnergy Assessment Model (BEAM). This model is documented in the final report of the IBS Activity. The Systems Studies Activity contributed to enhancing the feedstock portion of the model by developing a coherent set of willow, poplar, and switchgrass production modules relevant to both the US and the UK. The Activity also developed a pretreatment module for switchgrass. Second, the Activity sponsored a three-day workshop on modeling bioenergy systems with the objectives of providing an overview of the types of models used to evaluate bioenergy and promoting communication among bioenergy modelers. There were nine guest speakers addressing different types of models used to evaluate different aspects of bioenergy, ranging from technoeconomic models based on the ASPEN software to linear programming models to develop feedstock supply curves for the US. The papers from this workshop have been submitted to Biomass and Bioenergy and are under editorial review.

  1. Investigating Army systems and Systems of Systems for value robustness

    E-Print Network [OSTI]

    Koo, Kevin C. K. (Kevin Cheng Keong)

    2010-01-01T23:59:59.000Z

    This thesis proposes a value robustness approach to architect defense systems and Systems of Systems (SoS). A value robust system or SoS has the ability to provide continued value to stakeholders by performing well to meet ...

  2. Silica aerogel radiator for use in the A-RICH system utilized in the Belle II experiment

    E-Print Network [OSTI]

    Tabata, Makoto; Hamada, Nao; Hara, Koji; Iijima, Toru; Iwata, Shuichi; Kakuno, Hidekazu; Kawai, Hideyuki; Korpar, Samo; Križan, Peter; Kumita, Tetsuro; Nishida, Shohei; Ogawa, Satoru; Pestotnik, Rok; Šantelj, Luka; Seljak, Andrej; Sumiyoshi, Takayuki; Tahirovi?, Elvedin; Yoshida, Keisuke; Yusa, Yosuke

    2014-01-01T23:59:59.000Z

    This paper presents recent progress in the development and mass production of large-area hydrophobic silica aerogels for use as radiators in the aerogel-based ring-imaging Cherenkov (A-RICH) counter, which will be installed in the forward end cap of the Belle II detector. The proximity-focusing A-RICH system is especially designed to identify charged kaons and pions. The refractive index of the installed aerogel Cherenkov radiators is approximately 1.05, and we aim for a separation capability exceeding 4$\\sigma $ at momenta up to 4 GeV/$c$. Large-area aerogel tiles (over 18 $\\times $ 18 $\\times $ 2 cm$^3$) were first fabricated in test productions by pin drying in addition to conventional methods. We proposed to fill the large end-cap region (area 3.5 m$^2$) with 124 water-jet-trimmed fan-shaped dual-layer-focusing aerogel combinations of different refractive indices (1.045 and 1.055). Guided by the test production results, we decided to manufacture aerogels by the conventional method and are currently procee...

  3. Silica aerogel radiator for use in the A-RICH system utilized in the Belle II experiment

    E-Print Network [OSTI]

    Makoto Tabata; Ichiro Adachi; Nao Hamada; Koji Hara; Toru Iijima; Shuichi Iwata; Hidekazu Kakuno; Hideyuki Kawai; Samo Korpar; Peter Križan; Tetsuro Kumita; Shohei Nishida; Satoru Ogawa; Rok Pestotnik; Luka Šantelj; Andrej Seljak; Takayuki Sumiyoshi; Elvedin Tahirovi?; Keisuke Yoshida; Yosuke Yusa

    2014-06-18T23:59:59.000Z

    This paper presents recent progress in the development and mass production of large-area hydrophobic silica aerogels for use as radiators in the aerogel-based ring-imaging Cherenkov (A-RICH) counter, which will be installed in the forward end cap of the Belle II detector. The proximity-focusing A-RICH system is especially designed to identify charged kaons and pions. The refractive index of the installed aerogel Cherenkov radiators is approximately 1.05, and we aim for a separation capability exceeding 4$\\sigma $ at momenta up to 4 GeV/$c$. Large-area aerogel tiles (over 18 $\\times $ 18 $\\times $ 2 cm$^3$) were first fabricated in test productions by pin drying in addition to conventional methods. We proposed to fill the large end-cap region (area 3.5 m$^2$) with 124 water-jet-trimmed fan-shaped dual-layer-focusing aerogel combinations of different refractive indices (1.045 and 1.055). Guided by the test production results, we decided to manufacture aerogels by the conventional method and are currently proceeding with mass production. In an electron beam test undertaken at the DESY, we confirmed that the $K$/$\\pi $ separation capability of a prototype A-RICH counter exceeded 4$\\sigma $ at 4 GeV/$c$.

  4. Simulated Energy Savings Comparison Between Two Continuous Commissioning® Methods Applied to a Retrofitted Office Building

    E-Print Network [OSTI]

    Texas A& M Campus Building CC® Team

    in the summer of 2001, the control system was set up with a prescribed sequence of operation for each piece of equipment. The multi-zone AHU was started and stopped by an associated DDC panel. Once energized, the outside air damper would open fully... to maintain zone temperatures at their set points. Deck temperature set points and zone temperature set points were constant, fixed values. The three VAV AHUs were also started and stopped by associated DDC panels. Once energized, the outside air damper...

  5. Development of an Automated Fault Detection and Diagnosis tool for AHU's

    E-Print Network [OSTI]

    Bruton, K.; Raftery, P.; Aughney, N.; Keane, M.; O'Sullivan, D.

    2012-01-01T23:59:59.000Z

    is typically one. Structured energy management systems such as those in compliance with En16001 [11] or ISO50001 [12] promote this philosophy of energy management and are growing in their adoption. The bottom up approach is far more common in practice...(s) supplied Operating hours per annum 1 2 CAV 14 30 15 Y Office & canteen 8760 2 1 CAV 15 Not available Not available N ISO class 7 cleanroom area 8760 3 4 CAV Not available 45 22 N Production area 8760 4 10 VAV 13 10 N/A N Manufacturing Floor...

  6. Automatic calibration of a building energy performance model and remote fault detection for continuous commissioning using a global optimization program

    E-Print Network [OSTI]

    Lee, Seung Uk

    2002-01-01T23:59:59.000Z

    for energy waste. 2) An nnportant characteristic of this automated calibration process is that it may be possible to effectively use short-term measurements. The Short Term Energy Monitoring (STEM) is a method that Subbarao et al. (1990), Balcomb et al... %). The apparent savings fiom the retrofit of the DDCV system with VAV was about 684 GJ in cooling energy and 324 GJ in heating energy for a three-week period in June-July 1991. Balcomb et al. (1994) used the short-term energy monitoring (STEM) method...

  7. Optimal oil recovery strategies in Miocene transgressive-barrier, coastal-plain, and mixed-load fluvial systems in the Mioceno Norte Area, Lake Maracaibo, Venezuela

    SciTech Connect (OSTI)

    Ambrose, W.A.; Wang, F.P.; Akhter, M.S.; Skolnakorn, J. [Univ. of Texas, Austin, TX (United States)] [and others

    1996-08-01T23:59:59.000Z

    Miocene oil reservoirs in the 30-km{sup 2} Mioceno Norte area are estimated to have a recovery efficiency of only 27 percent at the end of primary recovery operations at the current 40-acre well spacing. Although this area has produced oil since the 1930s, appreciable volumes of oil remain in multiple, poorly contacted reservoir compartments. Strategic development of these compartments could improve ultimate recovery up to an additional 15 to 20 percent of the original oil in place. Multiple Miocene regressive-transgressive episodes in the Maracaibo Basin resulted in a complex reservoir architecture. Basal Miocene fluvial deposits, deposited during a forced regression, are overlain by shelf and transgressive barrier-island deposits of a highstand systems tract. Episodes of upper Miocene fluvial and lacustrine-fill deposits, bounded by continuous paleosol marker beds, record climate changes or intermittent tectonic activity resulting in reorganization of dip-dispersal systems. We used an integrated reservoir-characterization program incorporating structural, stratigraphic, seismic, palynological, petrophysical, petrographic, petroleum-engineering, and volumetric analyses to target areas for strategic oil recovery. Remaining oil is inferred to occur mainly in narrow (less than 2000 in wide), uncontacted or poorly contacted fluvial-and distributary-channel sandstones commonly projected between existing well spacing. Additional remaining oil exists in tidal-channel and backbarrier areas where washover-fan sandstones pinch out into muddy lagoonal-fill deposits.

  8. NERSC File Systems

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

    Systems NERSC File Systems Overview NERSC file systems can be divided into two categories: local and global. Local file systems are only accessible on a single platform, providing...

  9. 2 15.10.2013 Joachim Dietle Optimisation of Air-Water HP's Optimisation of Air-Water Heat Pumps

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    -Water Heat Pumps Ziehl-Abegg SE System boundary Improve Air Flow of Fan Improve System Joachim Dietle.10.2013 Joachim Dietle Optimisation of Air-Water HP's System boundary Air Flow in Heat Pumps V q d p st p P P L fan )( 1 Relevant for cooling or heating! Optimise heat pump: reduce pressure drop increase

  10. Gasification system

    DOE Patents [OSTI]

    Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

    1983-01-01T23:59:59.000Z

    A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

  11. Gasification system

    DOE Patents [OSTI]

    Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

    1985-01-01T23:59:59.000Z

    A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

  12. Directives System

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

    1998-01-30T23:59:59.000Z

    The Department of Energy (DOE) Directives System is the means by which DOE policies, requirements, and responsibilities are developed and communicated throughout the Department. Directives are used to inform, direct, and guide employees in the performance of their jobs, and to enable employees to work effectively within the Department and with agencies, contractors, and the public. Cancels: DOE O 251.1, DOE M 251.1-1

  13. Heating system

    SciTech Connect (OSTI)

    Nishman, P.J.

    1983-03-08T23:59:59.000Z

    A heating system utilizing solar panels and buried ground conduits to collect and store heat which is delivered to a heatpump heat exchanger. A heat-distribution fluid continuously circulates through a ground circuit to transfer heat from the ground to the heat exchanger. The ground circuit includes a length of buried ground conduit, a pump, a check valve and the heat exchanger. A solar circuit, including a solar panel and a second pump, is connected in parallel with the check valve so that the distribution fluid transfers solar heat to the heat exchanger for utilization and to the ground conduit for storage when the second pump is energized. A thermostatically instrumented control system energizes the second pump only when the temperature differential between the solar panel inlet and outlet temperatures exceeds a predetermined value and the ground temperature is less than a predetermined value. Consequently, the distribution fluid flows through the solar panel only when the panel is capable of supplying significant heat to the remainder of the system without causing excessive drying of the ground.

  14. Braking system

    DOE Patents [OSTI]

    Norgren, D.U.

    1982-09-23T23:59:59.000Z

    A balanced braking system comprising a plurality of braking assemblies located about a member to be braked. Each of the braking assemblies consists of a spring biased piston of a first material fitted into a body of a different material which has a greater contraction upon cooling than the piston material. The piston is provided with a recessed head portion over which is positioned a diaphragm and forming a space therebetween to which is connected a pressurized fluid supply. The diaphragm is controlled by the fluid in the space to contact or withdraw from the member to be braked. A cooling means causes the body within which the piston is fitted to contract more than the piston, producing a tight shrink fit therebetween. The braking system is particularly applicable for selectively braking an arbor of an electron microscope which immobilizes, for example, a vertically adjustable low temperature specimen holder during observation. The system provides balanced braking forces which can be easily removed and re-established with minimal disturbance to arbor location.

  15. Multiprocessor system

    SciTech Connect (OSTI)

    Katzman, J.A.; Bartlett, J.F.; Bixler, R.M.; Davidow, W.H.; Despotakis, J.A.; Graziano, P.J.; Green, M.D.; Greig, D.A.; Hayashi, S.J.; Mackie, D.R.

    1987-06-09T23:59:59.000Z

    This patent describes an input/output system for a multiprocessor system of the kind in which a plurality of separate processor modules are interconnected for processing, each of the processor modules having a central processing unit and an associated main memory, at least pair of the processor modules each having an input/output channel with each such channel being independent of other such channels, the input/output system comprising: device controller for controlling the transfer of data between the pair of processor modules and a peripheral device, the device controller having multiple ports, with each such port being failure-independent of the other such ports and connected to a respective one of the input/output channels, each port including an enable latch operable in response to a disable command communicated to the port by the associated processor module to disable the port from any further data communication; the device controller including interface logic means responsive to signaling from a one of the processor modules for selecting one of the ports to the exclusion of the other of the ports for data transfers between the peripheral device and the one processor module connected to the selected port through its associated input/output channel; and interprocessor bus means communicating the pair of processor modules to one another for data transfer therebetween; each of processors modules being operable to provide a data communication path to the peripheral device for itself and for the other of the pair of processor modules.

  16. File Systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) Environmental Assessments (EA)Budget »Travel andFifth Annual RadWasteFile Systems

  17. HVAC Energy Recovery Design and Economic Evaluation

    E-Print Network [OSTI]

    Kinnier, R. J.

    1979-01-01T23:59:59.000Z

    . As shown in Chart 5, the power requirements to operate an energy recovery system are a significant factor in the economic evaluations of the project as well as the additional costs for auxiliary components. These extra costs must be included... in the overall feasibility analysis. Chart 5 - Auxiliary Components FAN TYPE SUPPLY EXHAUST STATIC PRESSURE EXCHANGER FAN FAN PUMP COMPRESSOR FILTERS CONTROLS REQUIREMENTS, IN WG SUPPLY EXHAUST STATIONARY ? ? ? 1 1.0- 2.0 l.0- 2.0 HEAT WHEEL HYGROSCOPIC...

  18. Estimating Systems Engineering Reuse

    E-Print Network [OSTI]

    Fortune, Jared

    2009-04-20T23:59:59.000Z

    Systems engineering reuse is the utilization of previously developed systems engineering products or artifacts such as

  19. Computer Systems Administrator

    E-Print Network [OSTI]

    Computer Systems Administrator Fort Collins, CO POSITION A Computer Systems Administrator (Non activities. RESPONSIBILITIES The System Administrator will provide Unix/Linux, Windows computer system or computer science, and three years computer systems administration experience. DURATION The work is planned

  20. Continuous Emissions Monitoring System Monitoring Plan for the Y-12 Steam Plant

    SciTech Connect (OSTI)

    None

    2003-02-28T23:59:59.000Z

    The Oak Ridge Y-12 National Security Complex (Y-12), managed by BWXT, is submitting this Continuous Emissions Monitoring System (CEMS) Monitoring Plan in conformance with the requirements of Title 40 of the U.S. Code of Federal Regulations (CFR) Part 75. The state of Tennessee identified the Y-12 Steam Plant in Oak Ridge, Tennessee, as a non-electrical generation unit (EGU) nitrogen oxides (NO{sub x}) budget source as a result of the NO{sub x} State Implementation Plan (SIP) under the Tennessee Department of Environment and Conservation (TDEC) Rule 1200-3-27. Following this introduction, the monitoring plan contains the following sections: CEMS details, NO{sub x} emissions, and quality assurance (QA)/quality control (QC). The following information is included in the attachments: fuel and flue gas diagram, system layout, data flow diagrams, Electronic Monitoring Plan printouts, vendor information on coal and natural gas feed systems, and the Certification Test Protocol. The Y-12 Steam Plant consists of four Wickes boilers. Each is rated at a maximum heat input capacity of 296.8 MMBtu/hour or 250,000 lb/hour of 250-psig steam. Although pulverized coal is the principal fuel, each of the units can fire natural gas or a combination of coal and gas. Each unit is equipped with a Joy Manufacturing Company reverse air baghouse to control particulate emissions. Flue gases travel out of the baghouse, through an induced draft fan, then to one of two stacks. Boilers 1 and 2 exhaust through Stack 1. Boilers 3 and 4 exhaust through Stack 2. A dedicated CEMS will be installed in the ductwork of each boiler, downstream of the baghouse. The CEMS will be designed, built, installed, and started up by URS Group, Inc. (URS). Data acquisition and handling will be accomplished using a data acquisition and handling system (DAHS) designed, built, and programmed by Environmental Systems Corporation (ESC). The installed CEMS will continuously monitor NO{sub x}, flue gas flowrate, and carbon dioxide (CO{sub 2}). The CEMS will be utilized to report emissions from each unit for each ozone season starting May 1, 2003. Each boiler has independent coal and natural gas metering systems. Coal is fed to each boiler by belt-type coal feeders. Each boiler has two dedicated coal feeders. Natural gas may be burned along with coal for flame stability. The boilers may also be fired on natural gas alone. Orifice meters measure the natural gas flow to each boiler.

  1. Transfer system

    DOE Patents [OSTI]

    Kurosawa, Kanji (Tokyo, JP); Koga, Bunichiro (Miyagi, JP); Ito, Hideki (Miyagi, JP); Kiriyama, Shigeru (Miyagi, JP); Higuchi, Shizuo (Kanagawa, JP)

    2003-05-20T23:59:59.000Z

    A transport system includes a traveling rail (1) which constitutes a transport route and a transport body (3) which is capable of traveling on the traveling rail in the longitudinal direction of the traveling rail. Flexible drive tubes (5) are arranged on the traveling rail in the longitudinal direction of the traveling rail. The transport body includes a traveling wheel (4) which is capable of rolling on the traveling rail and drive wheels (2) which are capable of rolling on the drive tubes upon receiving the rotational drive power generated by pressure of a pressure medium supplied to the drive tubes while depressing the drive tubes. The traveling rail includes a plurality of transport sections and the transport body is capable of receiving a rotational drive force from the drive tubes at every transport sections. If necessary, a transport route changeover switch which changes over the transport route can be provided between the transport sections.

  2. Ventilation planning at Energy West's Deer Creek mine

    SciTech Connect (OSTI)

    Tonc, L.; Prosser, B.; Gamble, G. [Pacific Corp., Huntington, UT (United States)

    2009-08-15T23:59:59.000Z

    In 2004 ventilation planning was initiated to exploit a remote area of Deer Creek mine's reserve (near Huntington, Utah), the Mill Fork Area, located under a mountain. A push-pull ventilation system was selected. This article details the design process of the ventilation system upgrade, the procurement process for the new fans, and the new fan startup testing. 5 figs., 1 photo.

  3. 48 computer Published by the IEEE Computer Society 0018-9162/12/$31.00 2012 IEEE Cover Feature

    E-Print Network [OSTI]

    Lee, Hsien-Hsin "Sean"

    of their total power for cooling, which is highly inefficient. State-of-the-art data- centers can operate energy. Much of this energy goes to cooling the servers. Legacy systems can use more than half a Xeon 5160 server and measured the total system power consumption, fan power consumption, fan speed

  4. System architecture of offshore oil production systems

    E-Print Network [OSTI]

    Keller, James (James Thomas)

    2008-01-01T23:59:59.000Z

    This thesis presents an approach to applying Systems Architecture methods to the development of large, complex, commercial systems, particularly offshore oil and gas productions systems. The aim of this research was to ...

  5. Onsite Wastewater Treatment Systems: Spray Distribution System

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2008-10-23T23:59:59.000Z

    Spray distribution systems for wastewater are much like lawn sprinkler systems, in that they spray treated wastewater over the surface of a yard. This publication explains how spray distribution systems work, what their design requirements are...

  6. Examining Survivability of Systems of Systems

    E-Print Network [OSTI]

    Mekdeci, Brian

    Previous research has identified design principles that enable survivability for systems, but it is unclear if these principles are appropriate and sufficient for systems of systems as well. This paper presents a preliminary ...

  7. Systemic Risk in the International System

    E-Print Network [OSTI]

    Ingo Piepers

    2009-10-15T23:59:59.000Z

    The risk of systemic war seems dependant on the level of criticality and sensitivity of the International System, and the system's conditions. The level of criticality and sensitivity is dependant on the developmental stage of the International System. Initially, following a systemic war, the increase of the level of criticality and sensitivity go hand in hand. However, at a certain stage the sensitivity of the International System for larger sized wars decreases; as a consequence of a network effect, we argue. This network effect results in increased local stability of the System. During this phase the criticality of the International System steadily increases, resulting in a release deficit. This release deficit facilitates a necessary build up of energy to push the International System, by means of systemic war, into a new stability domain. Systemic war is functional in the periodic rebalancing of an anarchistic international system.

  8. Quantification of litter production and the fate of nitrogen in commercial broiler production systems

    E-Print Network [OSTI]

    Coufal, Craig Daniel

    2005-11-01T23:59:59.000Z

    were also used during the first week of chick placement for supplemental heat. Thermostats were used to turn brooder lamps off if the desired maximum temperature of 35?C was reached. The ventilation fans were controlled by a cycle timer to provide...

  9. Original Message Subject: [Fwd: [roboms] Fwd: [Imageworld] JOB: Robotics Systems Engineer, Dyson,

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    've developed new hand dryer technology, a desk fan without buffeting blades and a digital motor that spins 104 of existing robotic technologies * Software design / implementation * Testing and performance evaluation short listed please ensure you submit a supporting statement in addition to your CV clearly addressing

  10. Best Practices for Energy Efficient Cleanrooms: Control of Chilled Water System

    E-Print Network [OSTI]

    supply temperatures may improve the efficiency while meeting cooling requirements for cleanroom for cleanrooms and their adjacent spaces. Chillers 39% Cooling Towers 7% Pumps 17% MUAH + RCU Fans 9% Hot Water;chilled water pumps, secondary loop chilled water pumps, condenser water pumps, and cooling towers

  11. The Kufrah Paleodrainage System in Libya: A Past Connection to the Mediterranean Sea ?

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    between the terminal part of the Kufrah River and the Mediterranean Sea through the Wadi Sahabi, a Pliocene alkaline basaltic intra-continental volcanic field, and potentially connected to the Wadi Sahabi in the dunes of the Calanscio Sand Sea, forming alluvial fans. The most southern paleochannel, known as Wadi

  12. Available online at www.sciencedirect.com Systems & Control Letters 49 (2003) 239254

    E-Print Network [OSTI]

    Krstic, Miroslav

    2003-01-01T23:59:59.000Z

    in abundance for a considerable time after petroleum reserves are exhausted. One of the principal di culties to building ventilation. c 2003 Elsevier Science B.V. All rights reserved. Keywords: Nonlinear control; Mine a few fans/compressors strategically located through the network (and often directly connected

  13. Energy Efficiency Improvement and Cost Saving Opportunities for the Fruit and Vegetable Processing Industry. An ENERGY STAR Guide for Energy and Plant Managers

    E-Print Network [OSTI]

    Masanet, Eric

    2008-01-01T23:59:59.000Z

    design teams for energy-efficient building design. FinancialHVAC Systems Energy-efficient system design Fan modificationHVAC Systems Energy-efficient system design. The greatest

  14. NREL: Energy Systems Integration - Energy Systems Integration...

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

    Printable Version Energy Systems Integration Facility Newsroom The Energy Systems Integration Facility (ESIF) will be one of the only megawatt-scale test facilities in the United...

  15. Neutrino Factory Downstream Systems

    E-Print Network [OSTI]

    Zisman, Michael S.

    2010-01-01T23:59:59.000Z

    Neutrino Factory Downstream Systems Michael S. Zisman*Factory accelerator systems downstream from the target andthe Neutrino Factory systems downstream of the target and

  16. Franklin File Systems

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

    Files systems Files systems NERSC's global home and project file systems are available on Franklin. Additionally, Franklin has over 400 TB of locally attached high-performance...

  17. Depositional facies, diagenesis, and reservoir quality of Ivishak sandstone (Sadlerochit Group), Prudhoe Bay field

    SciTech Connect (OSTI)

    McGowen, J.H.; Bloch, S.

    1985-02-01T23:59:59.000Z

    The Sadlerochit Group is a large fan-delta system comparable in size to the modern Kosi River wet alluvial fan of Nepal and India. Braided-stream processes distributed chert gravel and quartz and chert sand in radial fashion to construct the subaerial part of the fan delta. Fluvial energy, slope of the fan surface, and grain size decrease in a north to south basinward direction. There is also a decrease in scale of sedimentation units from source area seaward. Facies of the subaerial fan delta can be broadly categorized as midfan delta (alternating conglomerate and sandstone), distal fan-delta (chiefly sandstone), and abandoned channel-fill, overbank, and pond facies (mudstone, siltstone, fine-grained sandstone). Seaward of the subaerial fan delta are the delta-front and prodelta facies. Subaerial fan-delta and delta-front facies compose the Ivishak sandstone, which grades basinward into the Kavik shale, a prodelta facies. Diagenetic effects were gradually superimposed on the sediments deposited in the Sadlerochit fan-delta system. The sedimentary facies, and in particular their textural characteristics, seem to control the side and degree of diagenesis, including enhancement of porosity and permeability. Comparison of permeability trends among the facies of the Ivishak sandstone with permeability patterns displayed by unconsolidated sands with analogous grain size and texture, indicates that the general trends that existed in the Ivishak sediments are still recognizable in spite of the diagenetic overprint.

  18. System design description cone penetrometer system

    SciTech Connect (OSTI)

    Seda, R.Y., Westinghouse Hanford

    1996-08-12T23:59:59.000Z

    The system design description documents in detail the design of the cone penetrometer system. The systems includes the cone penetrometer physical package, raman spectroscopy package and moisture sensor package. Information pertinent to the system design, development, fabrication and testing is provided.

  19. Communication Systems Chair of Communication Systems

    E-Print Network [OSTI]

    Schindelhauer, Christian

    , porn sites, web services, ... :-)) #12;8 | 28 Communication Systems network insecurity Inner and intra

  20. Complex System Classification

    E-Print Network [OSTI]

    Magee, Christopher

    2004-07-24T23:59:59.000Z

    The use of terms such as “Engineering Systems”, “System of systems” and others have been coming into greater use over the past decade to denote systems of importance but with implied higher complexity than for the term ...